and the community call is being recorded from now on. So, if you're welcome, those that have already joined, so for sure we'll have more people joining. So, one more community call of open air provide to engage with all the data source managers that are contributing to the open air infrastructure. So today we have one main topic about the roadmap, about the way that we are integrating the open air and data sources as YOSC providers or as YOSC data sources of the YOSC research product catalog. So our idea is to make it clear. Also last week there were an important activity, the YOSC providers days. Some of you may have also joined some of the sessions. So today we have the Open Air CTO, the Open Air CTO Paulo Manghi to make this clear for those that are interested in this community calls to have more detailed information about what is being developed for the YOSC, this specific research product catalog and the way that being an open air provider, you also part of this research product catalog. This was, this is the main objective, but as we also have the already in-bed available an interface to resist the crisis systems, we also want to highlight this new feature. So this is the agenda for today. So mainly focus on the YOSC research product catalog with Paulo, but let's start as usual with the novelty. So feel free to ask questions in the chat or even in the note document that we have available. Even sometimes we receive questions in the note document and we can answer reply after the session. So feel free also to do it. But of course, please make this community call more interactive and mute yourself and ask questions, okay? What, we have three things to highlight from the recent developments on some of the novelties. So a new index update from open air graph that is made available in production and via the different open air services so in the discovery service in explore and also you have already also received the notifications from the broker based on this update. So be aware that you can always check in this link that Andrea also can share the here in the chat that we have available in the portal. What are the most relevant novelties? I just highlighted some here, but the content was updated last first of May. Then of course we see all these updates available in production in different services in the different days over the week. But that's all you can see it in explore and then in provide and available in the APIs. So be aware that we have this page, let me open Firefox, I have it open here. So this page with the index and status and stats update you can always check this when was the last time just for you to make some highlights. I think what is important is that we have now in index and this is visible in explore the force and the SDG classification. So it's interesting for you to check. We are in that phase that we also want the feedback from the users to validate the approach, but this is visible. You can see it in explore via the filters or via a record, a normal record and it's interesting. So you will see the force and the sustainability development goals also classification available. There was an important update as we have usually people from Portugal but this is also important for others. An important update of the database of one specific funder from the Portuguese funder, FCT that really like duplicate the number of projects available from over 30,000 to 70,000 projects based on an authoritative database from FCT. So this increase a lot the quality of the data that we have from this specific funder and it's a real good case like others like others that we have in open air like other national funders. So if you want to ask anything about this recent update be you can do it. So one thing in beta visible is the decrease system registration. It's available. We tested over the last two weeks so we want to do the some updates but it's in beta available. So be aware that you don't need to have a data source register in beta to test because the functionalities of the validator in the registration are open. So you can use it if you go to beta.provide.opener.u you can test it. So we are open in that way. So feel free to test and if you have any suggestion please feel free to contact us. We already identify some things that we want to change some wording, some but we will do, we are doing that and we want to put it in production as soon as possible and hopefully in the coming week. And the last thing is what I have presented you about the terms of use last call and I can remind ourselves. So we want to have an update from all the content providers for the terms of use. So the acceptance of the metadata aggregation and also the full text. So it's a simple process. So we will have a pop up window in the first time that you access the provide dashboard or we have a specific tab to update that information. We put it I must say to be completely transparent. We put it in production this morning. We were not happy with some things that we were not expecting. So we just before this call we just put the same version that we had before. So we will do some tests today after the community call and with more without stress of this community call put it in production. So tomorrow this will be visible. I just want to highlight what we are talking about as some of you may not be aware. Let me just log in again just to because I'm realizing that there are several people here that were not in the previous call just for you to understand what we are talking about. So we want to also to be completely transparent. You know that the idea, sorry. I'm doing the I'm talking and accessing the service at the same time and things didn't work well. So I don't want to join with my personal account. I don't want to have that source here. We want to be it's important for us to update the terms of use because some of the content providers that we have currently joined long time ago they didn't have the opportunity to update the terms of use. We have updated our policies in 2018. So we have providers that join after 2018 some providers that didn't have any update after 2018. So this is the time for us to completely so update the terms of use and with this the bet is not working properly. So I will avoid to explain to you this and keep. So if I can access to the bet I will let you know. So we have this pop-up window that will open the first time that we'll join and then we have in the update tab a specific area for you to update the terms of use. What we also have included is the specific we will highlight the date that the last time that you have updated the terms of use to make it more clear for you. So this is what we want to have in production by tomorrow. Be aware that we have enriched the information that we have available in the public road map. So you can access the public road map and also contribute with your suggestions. If you have any suggestions, of course we have this community calls for you to also to do the same. So the index update the decrease registration in beta and the terms of use soon, tomorrow for sure. In fact, we have already for some time available in production, but we discard this update. Okay, we will check. I just want before to pass the floor to Paulo Mangueta just to highlight what we can highlight from the decrease registration. So we have now in beta and we are testing as an alternative source of information for registration of pre-systems, the Drees, the directory of pre-systems run by Eurocrease. Okay, this is a partnership with Eurocrease. We have integrated. So we have now like we have for data repository three days, like for publication repository is open door. We have now Drees as an alternative source for the registration of creases. Integrated in open air available through this workflow of registration available in beta. You can check by country. You see the creases systems that have that are registered in Drees system. So please make sure that your creases system is registered in Eurocrease. And then we, you can you can proceed with the registration identify the data repository. And then proceed with the registration identify the scope of the type of pre-system based on the typology that is used in Drees in the directory from Eurocrease. If it is a fund that crease a national or an institutional crease and then proceed with the registration of the interface. We have a specific tab for terms of the acceptance of terms of use and everything will work well. So be aware that we have this in product in beta for you to check. Now the topic of that I that it's our focus if you have any question about this, let me check. So maybe what we have here in chat are just the links from from Andreas so feel free to ask questions and during the not only about what Paul will present but also about what I I liked it and now and the now let's let's let's have this special topic here in this call with Paul Umangi to explicitly clarify to you the way that as is that the source of open air are part of this this just research product catalog. So Paulo, I will stop my. Thank you. Yes, thank you for joining. It's not in the in the presentation mode for us just to change to swap the display. Yes. You can change it in there. I could. Perfect. Okay. So this was, this is the presentation that I gave the US provider space for the libraries session. So as such, it includes all the discussion that we are going to have in the US for repository managers. Okay, so repository managers here are seen as the delegates of the libraries for the maintenance of an operation of their representatives. So briefly, the US as it is being conceived today in a few words is the thin layer that allows providers of services or research products as we're calling them research products here are again publications, datasets, software, things that objects that you are storing in your position is today together with the data. And services are the one that are typically available through the research infrastructures catalog or the infrastructures catalogs. And they should be part of the US resource map. Okay. So the catalog, the resource catalog is there to maintain such a map. So to acquire the information, the metadata information about the services and about the products, which happens to be something that we've been doing for ages in opening. Okay, where the services are the repositories in that sense because they are services and the products are the again the goods that are sold or and consumed via the repositories. And of course we have many more kind of data sources, kinds of data sources. So we have the gators, we have the publishers, publisher sites in this case. We have the registrants that you will know our kid open door. So we have several kinds of content. But again, the open air came before the US to acquire this kind of information, which did not regard at least so far the services, so the thematic services, because we were not interested in anything that wasn't related with the research process, which were and still are our main focus. So we'd like to track the science, how it evolves, how the products are connected, how the products have been funded, and where are these products stored. So that's it. So the used future and the resource got to look are still working with these underpinning thinking. Okay, so libraries and repositories share the repositories by the repositories share their research products, and somebody else can consume from the other side, the US users, which are the user suspects that we have in open air. So policymakers, researchers, communities, institutions, etc. And are not really very different from what we have conceived so far. So the resources in the US are services as I just mentioned, which can be thematic, horizontal computing storage, and there's a classification set of classification for that. And they can also be data sources. Okay, data sources are kind of horizontal services intended to store, preserve, and provide access to the outcomes of science. So repositories well belong to this class. And we have specific resources products, which are the ones that we have today in open air. So for you, these languages are more familiar than the people outside of open air. So data sources are those storing publications, datasets, resources, software, and those. And these are all entities that the US resource consultant will maintain and provide services and resource products. So example of a service in the context of the US is this geo hazard platform that is operated under the E-POS research infrastructure umbrella provided because it has a provider by Karaduha. Or we have the EGI compute, which is a different level. If the first one is very thematic, this one is like computing provided by EGI. And then of course we have the representatives like Zenoble can be, which is this provider is open air, but is there to serve a different class of products. So resource products, which will be available as EOS quantities, but they are already in the graph of course today from September 2022 are the ones that we know about. So publication that is linked to a dataset that can also be linked to a software together with the relationship with the repository where the object is contained. Everything you're familiar with. All this will be part of the US customer. How this will happen. This will happen through the open air graph. So this is really good news for you because if you're already part of the open air graph, then your products will be available through the resource product customer of the US. So if you have a data source, a repository, you can, you will be optionally asked to register to the US as a data source. So you can appear as a new service like Zenoble we've seen before. The repository can appear also in the marketplace of the US. And as a result of the fact that you are in the open air, you're really compliant with the guidelines, everything is fine, but you're also part of the open air resource graph and therefore of the resource product customer of the US, which is these two are the two components of the service and the resource product customer that will deliver the US resource customer. So, so far, if your repository is in the open air resource graph, then the resource products of your organization will be in the US resource customer. The extra mile you have to walk is the one where you're willingly saying I want my repository to also be registered as a US service. Now, there are discussions here, so ongoing discussions in the US. The US onboarding for services. It's slightly different from the one we have for research products. So it follows a different workflow. Okay. In this workflow, you need to register your service to a platform. So providing a number of fields with the data fields, then your submission is passed over to the EPOT team, which is the I remember something that has to do with validation. So what this team does is to evaluate your application and check if, first of all, you are a serious service. So if you're doing something that is related with science, you're not trying to spam the registry with information that is not related with the US activities, and then check if the information you've provided is fine, et cetera, et cetera, et cetera, until you are admitted and you can appear in the US customer. Now, there are discussions if we can for the data sources. So the representatives that are already registered in the open air to admit them all, like to have a green light. So in this case, they would need to soften a lot the kind of rules of participation they have today because the information that we collect in open air is not aligned with the full metadata profile that is mandatory today on the US side. But if this will happen, these means that you will have to do nothing. Just by magic, your repository will be both registered in the US service catalog, so as a US service profile. And your products will be in the open air graph as they are today, therefore in the US resource catalog. Of course, we'll follow up with this decision. But if this note will take place, then what will happen is that from the provide that Pedro is presenting to you every week with the updates, you will find an update. So you will find an update that will allow your service to be registered to the US as a service. So by clicking the bottom, you will be forwarded to the US service catalog where you will complete your profile and finally register the service properly into the US machine. So to which extent you will have to do some manual work or everything will be straightforward is to be decided yet, but this is the status of things at the moment. So of course, once you share your resources, as it is today, they will be available through the US catalog, through the European Participant Portal, the value services we are connected with and so on. So you will get all the benefits that you have in exchange. You, of course, will also be able to benefit of the brokering feature and it may well be the case that we will also make sure that some links if available between, for example, new kind of links, for example, between the publications and the US services if available can be fed back to your if you're interested. Because an idea that we have is not an idea. The more concrete is we are running experiments today already to mine articles, articles to find references to US services and reveal this link as part of the graph to track also how services are being mentioned. So to provide an extra indicators on the quality of services. And these, of course, can be made available to you and to your repositories if you're interested. So that's it. I think this was everything I have to say. So if you have any questions we can dig in into the details of that. Okay, great. Thank you. Paolo, I think just to make things clear here. What can we say that are the open issues currently regarding those that are already open data sources. I think it's just this issue of being automatically part of yours or not. So for the moment if you are providing your data to the open your product's metadata to the open-air graph your organization and your repository is fine with respect of the provision of the resource products. What is to be found and what is to be found is if also the repository will appear as a Niosk service. Of course it will appear as a data source in open-air. And it will appear as, let's say, the provenance information as it is today in the graph. But it's different from saying that your data source is also a Niosk data source. For that you need to formally appear in open-air. So you can do yourself. So if you register today in the service catalog, you can register. You manually include all the necessary metadata. And on our side we'll make sure the magic will happen. So we'll link your data source to the data source that you have in open-air. So the service will be, of course, if this will happen magically thanks to a change of policy in the Niosk. So if the Niosk accepts our list of registrants data sources in open-air as eligible to become your services, then the magic is done. But you're free, of course, if you want to anticipate that moment because this may happen at the end of the year or after you can, of course, go to the portal, register your data source, and on our side we are deduplicating. So please, of course, try to describe your data source, giving all the details that are necessary to make the magic happen. The same name, for example, don't change the name, the same URL that you're using to describe the entry, the website of your data source, the right country, and so on. If you're using that kind of information then the magic will happen by itself especially if you use the domain URL properly specified. This will make your service appear as a Niosk service sooner with all the fields that are being requested there and at the same time it will link it in the Niosk resource catalogue to your data. Thank you. To put it more in practical terms I think if in our institutions we are receiving any specific request to be part of Niosk I think we can move fast and go to the Niosk portal and register and they already also shared the link here you can find that information. If not, you can also wait for this process that we will have even if it is an automatic thing or then if you need to do some additional work but at least it will be something natural with a relation between the provide service itself from the side of open air and the Niosk portal but there always needs to be a manual action if it is not by you if it is an automatic process. Some services are already in order for example it is registered in the your market and we have created the linkage between the two so this new phase of the graph will be ready in beta by June the second June we have the Niosk review and we will provide the first integration between the Niosk catalogue and the data sources that we have with the duplication between the two which is curated manually by us so we can of course write if something goes wrong and anything that will happen after that so if you register on the Niosk service catalogue site it will be reflected in terms of duplication into the graph so you will see everything uniformly so your data source is basically your repository you will see it belongs to the Niosk service catalogue open door wherever it appears okay so we are collecting your profiles from the different places. Thank you very much so I feel free to ask questions so this is the time so we are in this group discussion so feel free to ask questions or to share your thoughts about should I register now should I wait to do it later so feel free so I think this slide is quite well clear for us to understand it's clear for us to understand the process of this onboarding process for this research product catalogue but so is anyone that want to ask a question share any thought about this process for some of you it's a novelty for others for sure it's not a novelty I recognize a few that were also in the providers but not all sorry Pedro I have one question how can I find my resources in the Niosk catalogue okay to be you need to register there I have registered it on open air and I registered it through Niosk through Miforos can I check yes it's available let me open for registration I have this page open just to share with you so for the process of registration you can check here for providers become a provider and register the source and follow the process also it's quite well documented the information about the type of fields that you need to feel your services should be here under the catalogue and so all the services that are represented until technology readiness level 7 are part of the catalogue those that have more than level 8 can be part of the marketplace but let's search if the process of registration George already finished successful finish it should be part of the catalogue okay as I am sharing the screen in this demo so I am sharing just the service the DMP the data management plan tool from OpenAir Argus and it's registered here so then you can see the information of the source of the service see the details and access the resource itself so it's everything under the catalogue okay thanks I understand the information for registration is for providers just to make one thing clear so for the moment if you go to the EOS portal you can only see services so research products are not there yet it will be in June okay in September June they will be available in beta okay in June you will be able to see and check what you can do from a beta portal a beta portal that I can show you quickly but it's basically the explorer that we have in OpenAir for the EOS so we have adapted to this look and feel that you see the OpenAir portal and from there you will be able to find all the products of course your representatives and the EOS service okay okay yes this difference is important I think it's already clear but there are the services catalogue and the research product catalogue the research product catalogue it's under development and will be made available and one more questions to clarify we have increased systems which is a collection of the scientific focus of Georgia and through NIFOROS we registered this on OpenAir and through NIFOROS on the EOS but these resources will appear only in September yes not now thank you they will be available in OpenAir yes but in EOS OpenAir they will be available let me show one thing quickly if you have time yes thank you George for your questions if others have questions just feel free to ask so Paolo will also give you some more input so this is what the first idea of what you will see can you see that by you can already today search these things through OpenAir portal you see the look and feel is the European OpenScience Cloud this is the OpenAir index you will find instead of content providers you will find services and data sources so from here by clicking here today you find only the repositories as you can see tomorrow you will find also the EOS service types one of these will be the data sources and if you are clicking on the data sources of course you will find yourself in the same scenario that you are today so we are merging the two acquires on your banner so we will take the EOS service as a data source in OpenAir it's like a registry of services and of course we will duplicate them so the EOS service catalog will be very similar to OpenDoor to Refridata in that sense it's a list of services okay so you will need to connect things thank you Paolo for sharing this and their development thank you okay I think things are more clear so we wanted to to have Paolo here with this explanation just to make things more clear in terms of this relation between those that are OpenAir providers and that will become data sources in EOS also if you don't have any other question just check the chat and to see here is Jan Dworzak Paolo please what is the metadata difference what fields are missing the full registration for an EOS service provider that are not currently not available many many sir many of them if you take a look at the service profile it's a lot of information that we are not requiring in OpenAir so the good news is that what you're providing today is now part of the EOS data model for services when the type of the service is data source but there is a plethora of fields that we're not asking that you're supposed to fill in have you seen the EOS profiles is that like you can check them out is that like free text fields some of them are free text some of them are provided by ontologies and classes so that's a quite long list I'm sharing the link just for you to be aware it's under that for providers it's not an action that you do in 5 minutes you will need, I don't know, half an hour half an hour half an hour you need to find this information for example you will be asked provide the URL for your privacy, your privacy policy so you need to in that case you need to find those things out these are the data source this is the data source stuff which we have already and collect from the open door the data so you find it out of the box but if you look at the services in order to find it follow the for providers you should find it there's a lot of stuff on the screen where it is the data source profile there is a spreadsheet and a pdf with the list of fields available so it's quite well documented I think now in the past maybe not so clear but now I think it's quite clear we did it for our services and it took some time for its service it depends on how much of this information you already have attend but I think it's important to have we've been discussing this a lot so it's information that is typically very hard to get and finding it in one place for all services is very useful for those for the point of view of the consumers of the services yeah yeah thanks for the clarification okay thank you for your question so I'm just checking here if there is any any other question if not let's just feel free to ask question in the coming one or two minutes before I close the call so um hope to have like the terms of use in production to tomorrow the the bet I'm realizing that is not working properly some we have some things that are under intervention this afternoon so if you want to test the crease registration process please do it tomorrow so I already sent messages to my colleagues to alert that in fact I was testing some hours ago and everything was working well but now it's not working so try tomorrow I'm just checking here if there is any any other questions those that are interested in the crease process the others about the terms of use when you come back to the provider to the dashboard you will see the pop-up window or you will see the new update menu with the needed action for the terms of use if you have to discuss feel free also to suggest topics if you want to have something for discussion we have that be aware that we have that relation between the provider dashboard and the data management plan tools the Argos tool so that we are thinking to have interesting integrations we already discussed I think two calls ago but we want to have a discussion with you about to have kind of use cases what you would like to see for example from researches that are using Argos system to prepare and to deliver a data management plan information integrated in the provide for you to be aware of the intention for example for a project to deposit data in a specific data repository or that possibility to have a connection straightforward to public to publish the dmp in your specific publication repository for example so but we have other topics that we would like to discuss in future calls so the next will be on the first of June June will be really an interesting month because there are also other international events the open repositories and other other other I think decrease the meeting will be in May or June you can you can advertise if you want the I know that the first week of June the open repositories in Denver there are also the dataverse community meeting in June the Eurocrease conference will be in Eurocrease conference is actually next week oh next week in the great in the great yeah thank you again so it's not in June but it's in in May so June will be an interesting month with lots of activities and events and also in the first of June our community call subscribe the newsletter as usually we do this advertisement to be sent every first Monday or Tuesday of the month the newsletter just before our call with the novelties this month also there is the conference the conference the confederation of open access conference I'm just realizing about that because we also advertise this joint statement also from from our last newsletter so checking again the shot so if you don't have any other any other questions so thank you very much the recordings will be made available for you also the presentation with also the presentation of Paolo in the in the openair portal so openair.u you have under support a specific page for these community calls so with all the information and the previous recordings even if you want to be aware of other presentations like we did about the user statistics last time about fair assessment some calls ago so there are some interesting topics that we have already discussed in previous calls that you can also access so thank you very much Paolo thank you for joining and for all this great clarity clarifications and we are closing now this community call. Of course I'm available also offline so if you have a special request send me an email okay thank you thank you all see you next time bye bye


Good afternoon, everyone. My name is Chris Martin, and I'm here with my colleague Julian Pistorius. We are the co-founders and developers of Exosphere. Exosphere is an open-source software project that delivers a user-friendly interface for cloud computing. So if you can imagine OpenStack Horizon being redesigned for researchers and data scientists rather than IT professionals. The pitch for users and institutions is that you easily run your workload on big virtual computers.  You don't have to worry about virtual networks, security groups, SSH keys, anything like that. So it makes the cloud more accessible. It just works with existing OpenStack Clouds. It's completely a client-side web app, and we strive for very easy adoption and integration. We also strive for no-user interface lock-in, which means that if you want to jump between Exosphere, the command line of the APIs, then Exosphere will get out of your way. If you want to pick it up again, then it shows all of your resources that you made using the other interfaces. Exosphere is free, open-source, localizable, and white-labelable. We have a deployment for Jetstream 2, which uses their branding and their nomenclature. It's very easy to customize and you can offer Exosphere to your users today with your own institutions, branding, etc. So we're going to jump right into changes since our last lightning talk in April. Julian, take it away. Thanks, Seymour. One of the things that was close to completion last time but wasn't quite ready was the graphical remote to desktop in the browser. This is powered by the same open-source project that powers the in-browser terminal called Apache Guacamole. Seymour clicks on there. It supports copy and paste from the browser and is nice and responsive and doesn't require the way we deploy. It doesn't require any extra servers. Everything runs on the instance itself using Docker. My browser is struggling to keep up with these tabs. Let's go back to that one. What's our next feature? The other one is a new feature based on the DigitalOcean user interface for launching virtual machine images in a nice friendly way instead of having to go through a big catalog. Cloud Deployer could customize Exosphere using JSON file and then instead of having to troll through a whole back catalog, you can have curated images that are very easy to select based on just an operating system distribution and version. I guess your browser is really struggling. My browser is struggling with Google Meet going. It's half loaded. If I weren't running a Google Meet, you would see some logos here. The other thing that I spent a bit of time on this last six months was integrating data science workbenches. This builds on the binder projects, reproducible execution environment specifications. Any binder-compatible repository can be launched when you launch a server. Then you end up with a persistent Jupyter Notebook or RStudio environment that can run potentially on instances with GPUs, lots of memory, lots of cores. It's pretty good for doing reproducibility in workshops where you don't want to rely on the free MyBinder service. Everything standard under the hood. Again, everything you could do the same thing with the command-line tools, repo to Docker. I think if you want to see if the... There we go. It's eventually going. There we go. Here's an RStudio environment. So this is... Oh, now I launched a billion of them. But this is running on the instance that you launched with Exosphere. It requires no configuration on the user's part. We facilitate secure TLS encrypted connections from the browser to the instance. And there is a Jupyter Hub one as well. There we go. You want to see if the remote desktop works this time? Yep. I think my browser has caught up graphical desktop with any luck. Oh, I think we'll be lucky. All right. So this is a CentOS 8 instance running GNOME. You can run any graphical application on here. It's in your browser. You can copy and paste between the browser and the host operating system. Again, no configuration required on the user's part to set this up. They just launch an instance and say, I want graphical desktop.  Julian, if you want to run through those quickly. We used to have a sidebar that's no longer there. That's my timer. We have a new logo. We have these pretty resource usage graphs. Just a bunch of tweaks to make the app less intimidating to users. Make it look better as well as work better. Hurrying along, we have a feature roadmap. Some of the things that we just showed you are actually on the roadmap. They're in the works. Some GPU powered features. Better support for containers as first-class objects. More single sign-down integrations. We already do OpenID Connect for JetStream Cloud. Cutting right to the end, Julian, take it away. Call to action. Yeah. All of you probably have access to OpenStack Clouds. I would love you to try it. I think what's not in the demo was we have a Nectar Cloud working. We have Tombstone Cloud from Cybers working. There's a commercial Cloud Fuga that we got working. But if you need access to JetStream, let us know. We can give you demo access to that. And then, yeah, we have a matrix chat. Please, real-time chat where you can talk to us. And thanks again for all the help from JetStream and Indiana University for their support. And also a bunch of new contributors that we got from the community in the last six months or so. Any questions? Feel free to ask them here. Chat or afterwards. Thank you.


If you're like me, you love running so much that it doesn't matter where you run or how far you run, whether it's a 5k up to a marathon, whether it's on any of the four Ts, treadmill, track, trail or tarmac, you just love to run. And that's great because it keeps it fresh, it keeps it interesting and it stops you losing your mojo. I've lost my mojo! There's nothing worse than getting into a running rut doing the same old routes every day. But if you regularly vary the different terrains and distances that you run, you'll soon discover you need a different type of running shoe for the different types of running that you do. So today I'm going to take you through the five main types of running shoe you're likely to need and give you examples of the shoe I use in each of those categories. First up, you will need a daily trainer. This is the shoe you will arguably wear most often. It's the shoe you wear for your easy runs, your tempo sessions, treadmill running and intervals, and any runs on tarmac or path where you're not all out racing. For years, my choice of daily trainer has been these, the New Balance 1080s. These are version 11, but I did have two pairs of version 10s on rotation prior to this. And that's another thing you may find you need two or even three pairs of your daily trainer because you use them so much. And I know some people who buy in bulk. The 1080s are like wearing a pillow on your feet. The upper is a very soft material which molds to your feet. And the midsole is a very soft cushioned comfortable foam. It's not great to constantly pound the roads and getting out there on the trails is a great way to mix it up, get yourself a dose of nature and also improve that leg and ankle strength by running on uneven and more challenging terrain. And for that, you'll need some trail shoes. Trail shoes have better grip on the sole and a more durable upper or a more durable shoe all round for the demands of running on the trails. My trail shoe of choice for a long time has been the Hoka Speed Goats. Now these are version five, but I've been running in Speed Goats since version two. You can see they are chunkier than your daily trainer. They do have much more grip on the sole and they are generally a more durable shoe, but for many they may be overkill. You can see Hoka are very well known for their large stack height. Makes for very, very comfortable shoes over very long distances. I'm talking over a hundred miles. You can wear this shoe and still feel comfortable. It is a heavier shoe. There are lugs on the bottom for more grip and the upper is a more durable material so it can last over this tough terrain that you're going to be running on. But as long as you find a shoe that has some more grip than your daily trainer, then you're going to cover mostly 90% of the trails that you're going to run on. Which brings me on to the next category. You see, you're never going to find a pair of trail shoes to cover all bases. My Hoka Speed Goats will be great over rock and a little bit of wet and on dusty trails, but when it comes to mud, they're not really very good at all. So if you find yourself running in very boggy conditions in slippy mud or wet grassy slopes, you might want to consider getting yourself a pair of trail shoes with rather deeper lugs. By the way, now's a good time. If you're finding the video interesting, useful or entertaining, please do hit the like button and consider subscribing to the channel. Let's get on with the video. These Innovate Mud Claws have a much more aggressive sole. They can cope with muddy, deep boggy conditions much better than my hokers and much better than many of the general trail shoes you'll find out there. They're made by Innovate. They don't have an awful lot of cushioning, so if you like your soft cushion shoes, these may not be for you, but they are for a specific purpose. Of course, some people will buy three, four, five different pairs of trail shoes all for different kinds of conditions. The problem is, you're likely to do one race where you get all those different conditions in one go. With the Speed Goats and the Mud Claws, I feel like I've got an option for 95% of the terrain I'm likely to encounter on my runs. If you've ever run on a track, you might have come across track spikes. Now, I have to confess, I very rarely wear spikes. If I do a training session on the track, I'm more likely to wear my daily trainer, and I very rarely do any races on a 400m track. But I have worn spikes at the track and also for cross-country, and if you're somebody who enjoys racing with your local club at track and cross-country, then you probably need to invest in a pair of track spikes. They are not the most comfortable or cushioned shoes you're ever likely to wear. Spikes are generally just racing flats, old-fashioned racing flats with spikes on the bottom. And you may find that you need to adopt a more forefront running form in order to take advantage of the spikes which are on the forefoot of the shoe. Now, as you might be able to see if you take a close look at my spikes, I have worn them for both track and cross-country. The difference being that you change out the spike length on the bottom. So for track, you would have a shorter spike. For cross-country, you would have a longer spike. If you're serious about running fast and you want to shave every second you can off your time, then you should probably invest in a pair of carbon-plated running shoes. And if you're like me, this is a shoe that is so expensive, you are only likely to wear it for races and very, very rarely for training. They are very lightweight, they are very well cushioned, and they can feel a little strange when you first put them on if you've never worn a pair of carbon-plated shoes before. The current king of the crop when it comes to carbon-plated super shoes are the Nike Vapor Flies. These are the next percent. These are version one and version three has just been released. But I've been wearing version one for a few years now. But the latest challenger to the Vapor Fly crown is the Sorkany Endorphin Elite shoe. This is recently released and I am currently testing them. I'm going to test them on a half marathon this coming weekend. Will they replace my trusty Vapor Flies? Well, there will be a review out of these shoes on this channel in the next couple of weeks. And if you'd like to see the video where I first put on the Sorkany Endorphin Elite then click that link right there. If you found the video interesting, entertaining, or useful in some way then please do hit the like button and consider subscribing to the channel for plenty more training videos, race recaps and product reviews. Until then, we'll see you on the start line next time. Bye bye.


Hello and welcome to the session. In this session, we discussed the following question which says, simplify the following 4ab into a minus b minus 6a square into b minus b square minus 3b square into 2a square minus a plus 2ab into a minus b. Let's move on to the solution. We need to simplify the expression 4ab into a minus b minus 6a square into b minus b square minus 3b square into 2a square minus a plus 2ab into a minus b. So this is equal to, first we multiply 4ab with each term of this bracket that is we have 4ab into a plus 4ab into minus b. In the same way we multiply minus 6a square with each term of this bracket that is we have minus 6a square into b minus 6a square into minus b square. Then again in the same way we will multiply minus 3b square with each term of this bracket so we have minus 3b square into 2a square minus 3b square into minus a. Then we will multiply 2ab with each term of this bracket so we have plus 2ab into a plus 2ab into minus b. So this is equal to now 4ab into a is 4a square b then minus 4ab into b is 4ab square minus 6a square b as 6a square into b 6a square b plus 6a square b square. We multiply 6a square and b square we get 6a square b square minus 6a square b square multiplying 3b square and 2a square. Now plus 3ab square that is we get this one multiplying 3b square and a plus 2a square b we get this one multiplying 2ab and a minus 2ab square we get this one multiplying 2ab and b. Now 6a square b square and minus 6a square b square cancels so we will take the like terms together. So we have 4a square b minus 6a square b plus 2a square b let this be in one bracket then plus minus 4ab square plus 3ab square minus 2ab square. So this is equal to 6a square b minus 6a square b plus minus 6ab square plus 3ab square and so this is equal to 6a square b and minus 6a square b cancels. So here we will be left with minus 6a b square plus 3ab square and so this comes out to be equal to minus 3ab square. So this is our final answer minus 3ab square this completes the session hope you have understood the solution for this question.


What is up you guys, welcome back to another one. If you went into the channel, I'm Gope Pony at the new car truck SCV reviews on YouTube. And today we are in the new 2022 Toyota Highlander Platinum courtesy of younger Toyota in Hagerstown, Maryland for more information on their inventory. Please feel free to check out the link in the description box below. And so we are in this one today because this one gives you Lexus-like quality paired up with Toyota's legendary reliability. So ultimately in this video we will be testing out going over everything about this one, from acceleration to braking, steering wheel, ride quality, sound system, exhaust clip, all that fun stuff. So having said all of that, what do you guys say? Let's just go ahead and jump right into it. And as always, let's start with pricing. So specifically for the 2022 Highlander Platinum there will be two different configurations. You got the front wheel drive starting at $48,010 and then the all wheel drive, which of course is the one we have today starting at $49,960. But regardless of which configuration that you go with the power plant on this one is going to be the same. Powering the beast is a 3.5 liter naturally aspirated V6 putting out 295 horsepower at 6,600 RPM, 263 pound-feet of torque coming in at 4,700 RPM. Power sent to front wheels or all wheels through an eight speed automatic, zero to 60 time coming in at approximately 6.8 seconds with MPG numbers coming in at 21 in the city, 29 on the highway for the front wheel drive, 20 city, 27 then on the highway for the all wheel drive taking regular unlit fuel. So before we do any kind of fun acceleration test here in our Highlander, I wanted to mention to you guys the drive modes. There's actually a drive mode switch and then a drive mode dial located directly behind the shifter. And so the switch is going to be for your on-road drive modes. You got eco, normal and sport and then the dial is going to be for your off-road drive modes. For those you got mud and sand, rock and dirt and then normal. All of these drive modes, essentially adjusting things like the shift points, throttle response, steering sensitivity and then for the off-road drive modes and all wheel drive system engagement then as well. And so having now gotten all of that out of the way, what do you guys say? Let's go ahead and throw it in the sport driving mode here. Let me hit it one more time and it immediately downshifted for me. So it is going to hold the RPMs at a much higher level, obviously. But having done that, let's go ahead and find a straightaway and let's put the Highlander here to the test and let's see how quickly we can get this one here up to speed. All right, in three, two, one, go. All right, definitely not going to have any issues with merging onto the highway. It's not the quickest thing in the world but it is a three row SUV so I didn't expect it to be but it is a naturally aspirated V6 so it is incredibly reliable and it has plenty of power to do just about anything you're going to want to do in an SUV. But anyways, to go along with that acceleration as always, braking is equally important.  As far as the S60's easier stopping distance goes it's going to come in extremely impressive 116 feet and just testing out the braking feel it's 100% on the firmer side of things which is absolutely amazing. I love a firm braking feel. It instantly brings you to a stop and this is important because if you have kids in the back seat somebody comes to a quick stop. In front of you you want to be able to come to an equally as quick stop so you don't end up hitting them so definitely braking is 100% on point. Typically in SUVs a lot of times you even get the upper 130s for that 60-zero stopping distance. So again, 116 feet is 100% on point. So absolutely loved that. Anyways, then touching on suspension and handling up front you're going to get an independent McPherson strut front suspension in the back trailing wishbone type rear suspension front stabilizer bar as well. As far as ride quality goes it's been 100% perfectly fine on my short little test drive here today. So absorbing Hagerstown's road imperfections extremely nicely. Start of steering feel goes, I would say it feels right. It's definitely not as loosey-goosey as you typically get on a lot of other three-row SUVs as well. So definitely perfectly fine as far as steering feel goes. So as cabin noise goes you guys I am going 50 miles per hour on the dot right now and cabin noise is 100% on point. I mean, I'm getting very little coming into the cabin and it's doing part because there is an acoustic laminated front windshield that comes standard but specific to the platinum trim level that we have today you actually get acoustic laminated front door glass as well. It is going to absorb a lot of the wind noise coming into the cabin. So that is why it is 100% on point here in the Highlander but then touching off visibility I can see perfectly fine out the back. So definitely not going to have any issues there. Rate sensing windshield wipers do come standard as well and specific to the platinum yet again you do get a head up display projecting your speed, speed limit, there's a compass, there's fuel information and safety features are going to be displayed up there as well. So very bright display even with sunglasses on I can see it perfectly fine. So that's definitely very nice but that pretty much rounds out the performance segment of this review you guys. Let's now go ahead and take a look at the exterior of our brand new 2022 Toyota Highlander Platinum. All right, so here she is you guys, the new 2022 Toyota Highlander Platinum finished in silver metallic parked in the woods. Gotta love it. But anyways, go ahead and start up front on this one. Black painted front grille with chrome surrounds you guys are currently looking at to like the little wings to the left and the right of the Toyota logo up front there as well. Silver finish found on the front lip one of those distinguishing factors with the platinum trim level comparatively speaking to the other trim levels on the Highlander but my very favorite part as far as exterior goes when it comes to the Highlander are the headlights because LED projector headlights do come standard and so typically you'll find LED reflector headlights which are great but they're not as projected they're not as bright as the projector headlights. LED projector headlights are the best you can get but it gets better. Adaptive front lighting system as well. So when you're going around to bend at night those headlights are going to swivel based on the direction of your steering angle better help illuminating what is around that bend so you're less likely to hit a deer or animal or a bicyclist or a person or whatever. So that is definitely a very nice safety feature in itself auto leveling feature as well. LED daytime running lights you get the automatic feature and you get automatic high beams as well. So when you're driving at night yet again you got your high beams on those high beams will switch back to low beams if it senses a vehicle coming in the opposite direction then when that vehicle is gone it's going to bounce it back up to high beams again so it's just one less thing you got to worry about so that is definitely very nice as well. Then just below those headlights you got some very bright LED fog lights that do come standard on the Highlander Platinum then as well so overall the lighting is 100% on point with this one but that pretty much rounds out the front end let's now go ahead and make our way to the side. All right so but now since we are around to the side of the Highlander Platinum first thing that always catches my eye on this one is the gloss black A-pillar kind of distinguishes itself from other SUVs out there with that but silver roof rails also coming standard up top there you got rear privacy glass of course got some chrome belt line molding as well I like the body colored side skirts as well because a lot of other SUVs out there will leave that matte black so huge fan of the body colored side skirts on the Highlander here taking a look at the side mirrors they are body colored power adjustable side mirrors they will be heated with LED integrated turn signals you're actually gonna get puddle lights with the Highlander logo projecting down from those side mirrors at night as well so I'm not gonna be able to show it to you right now but that is what the Platinum gets ya so that's pretty cool I like that reverse tilt down feature of course coming standard with them as well so also another thing I wanted to mention is you got those Lexus light creases found on the rear doors that kind of taper off into the tail lights so big design element that I'm a huge fan of there as well and of course when it comes to the wheel setup you will find 20 inch alloys multi spoke alloy wheels so definitely a very nice look there as well but that pretty much rounds out the side profile here so I'll go ahead and make our way to the back of the Highlander so now since we are around to the back of this one body colored shark fin antenna found all the way to the top just below that rear spoiler with an integrated brake light just below that rear window wiper you do get LED tail lights coming standard as well to tie in together with the LED headlights of course do you actually have some platinum all wheel drive badging you guys will see that on the bottom right hand corner of the rear tailgate there so that is definitely pretty cool you got some silver accents found in the bottom portion to tie in with the silver accents up front of course and a single exhaust outlet tucked away so having said that I do believe you guys know what we have to do next as always here is that exhaust clip so now since we are around to the back of the Highlander when it comes to opening that rear tailgate it is a hands free power tailgate that does come standard on the Highlander Platinum there is a button on the key fob as well there is a button on the tailgate itself again it is hands free of course but anyways once opened up cargo capacity behind that third row at least comes in an even 16 cubic feet behind the second row with that third row folded down 48.4 cubic feet and with all rows folded 84.3 cubic feet so definitely a good bit of space there pretty much in line with the Honda Pilot I believe there is this 84 cubic feet point something as well but anyways there is a 60-40 split there is some cargo lighting back there there is a cargo cover there is a 12 volt power outlet there are tie down anchors, grocery bag hooks and if you were to lift up underneath of that cargo floor you will find some in-floor storage if you were wondering if there's a spare tire there is it's actually located underneath next to the exhaust underneath of the Highlander so that is going to be the answer for that one but anyways then making our way up to the third row legroom that is going to come in at 27.7 inches so for reference I mean even 6 feet tall this is how much space I have back there rear ventilation of course does come standard for all three rows it's going to be found kind of on the ceiling of the Highlander so it's very nice there and you do have some cup holders on each side for those third row passengers as well but then making our way up to the second row legroom that is going to come in at even 41 inches again for reference I mean even 6 feet tall this is how much space I have back there did want to also mention though in case anybody was curious the Highlander Platinum does come standard with captain's chairs meaning two seats in the middle as opposed to the three bench seating that you sometimes get on the lower term levels I guess you could say charging ports can be found back there they are the USB-A so they're the smaller charging ports also there is a 120 volt power outlet back there as well which I was kind of surprised to see so that is pretty cool heated second row seats come standard on the Highlander Platinum huge fan of that you get some manual second row sunshades as well also a huge fan of that to keep the sun out of your kids eyes so and there's actually a little bit of storage and a couple cup holders located within the middle between those captain's chairs as well but then making our way up to the front seats 10-way power adjustable driver's seat with power lumbar does come standard leather seating of course being the standard finish heated and ventilated front seats as well memory settings for up to two different drivers found on the driver's side door there there is an 8-way power adjustable passenger seat that comes standard as well overall seating was plenty comfortable I like the little diamond pattern design found in the seats as well they're definitely not going to have any issues with taking this thing on long road trip to Ocean City, Maryland or Rehoboth Beach or wherever you want to go I'm just saying I'm on the East Coast but then taking a look at the steering wheel it is tilt and telescoping it is leather wrapped and it is heated actually as well so very nice there then make your way to the startup let me start by showing you guys the key here you do have your Highlander specific key because you got the Highlander lettering on the one side but then flip it over you got lock, unlock and of course that button to pop the rear tailgate but it is all keyless entry with a push button start so all I'm going to do here simply put my front of the brake and press that engine start button located just below the gauges there and so once started up tachometer is all the way to your left speedometer is all the way to your right and there is a fairly large digital display front and center to control what is on that digital display there are steering wheel mounting controls found on the left side of the steering wheel that gives you things like your outside temperature how many miles you'll have left until you hit empty, trip A, trip B safety information, radio information the list goes on so pretty much everything you could possibly want on the digital portion of the gauges there then make your way to overall interior quality panoramic moon roof coming standard on the Highlander Platinum gotta love that overhead sunglass holder also coming standard you got the school bus mirror as well so you can spy on the rear passengers and yell at them if you would like trizone climb control also coming standard meaning driver, passenger and the rear passengers can all set their own temperatures if they wanted to chrome interior door handles gotta love that you do have an auto dimming rear view mirror with homelink controls for up to three different garage doors also very nice ambient interior lighting coming standard you got some ornamental dash trim as well and you got some metal scuff plates and this wood like trim I'll put it that way but it actually feels plastic but I do like the design to it so it's a very nice wood like design found just around the shifter and the cup holders as well as on the doors there as well so overall very nice interior quality got some extra space extra cargo space located just underneath the infotainment screen even more space just underneath of that USB charging port, USB-C charging port two USB-A's a 12 volt power outlet dual cup holders again electric mechanical parking brake and within the center armrest is actually where you're gonna find that wireless phone charger and a decent amount of storage underneath of that as well so overall interior quality has everything you could possibly want more or less but now let's go ahead and make our way to that infotainment screen because it is massive it is a 12.3 inch color touch screen display Bluetooth and audio streaming of course Android Auto Apple CarPlay factory navigation does come standard as well you also have your climate control settings up there your heated seat settings up there as well and of course your radio information and so when it comes to the standard sound system on the Highlander Platinum you will get an 11 speaker JBL sound system with an external amp and a subwoofer so having said that, what do you guys say? Let's go ahead and turn on the radio see what we got playing today and let's test out the clarity of this one plenty of clarity there, plenty of bass, JBL I actually had a JBL subwoofer in my first car I thought it was so cool put an external sub in the back of my trunk there but JBL is definitely reputable they have been around for forever I feel like so that is definitely a very nice sound system for the Highlander without a doubt but then last thing I wanted to mention to you guys on the infotainment screen is when you do put the Highlander Platinum in reverse you not only will get a rear view camera ticking up the entire left portion of the screen but you're also going to get a 360 degree monitor found on the right so that is the best setup you could possibly get for this thing which is always going to lead us into safety and so to start the Highlander Platinum is an IIHS top safety pick plus which is the very highest designation given by IIHS that pretty much has it all right there front side side current airbags do come standard you get a driver's knee airbag up front as well a passenger seat cushion airbag as well you usually don't find that on other manufacturers so that was pretty cool in the back you're going to have latch aka lower anchors to tether to children for the rear car seats for your child door locks tire pressure monitoring system but also coming standard will be Toyota Safety Sense 2.5 plus that is going to include a pre-collision system with pedestrian detection lane departure alert with steering assist lane tracing assist, road sign assist, dynamic radar cruise control and a blind spot monitoring system with rear cross traffic alert and so overall with a custom my final thoughts here the Highlander Platinum definitely gives you plenty of luxury including this panoramic moon roof I got a color head up display like I was mentioning to you guys this would look trim that I absolutely love so plenty of luxury found in this thing of course to go with that you have incredible reliability this is not a turbo charged engine this isn't even a direct injected engine this is a Atkinson cycle naturally aspirated V6 so you cannot beat that you got perfect safety of course like I just mentioned with incredible headlights it doesn't get any better than the headlight setup that we have here on the Highlander Platinum the only thing missing the only thing I would possibly add to this thing would be a full digital gauge cluster so you got a 12.3 inch infotainment screen I wish they could make a 12.3 inch digital gauge cluster that's customizable you can change the colors per the driving mode or something even so that's the only thing I could see missing because they got that on the new Tundra now as well but let me know what you guys think of the new Highlander Platinum in the comment section below and that is about it for this one you guys thank you so much for watching feel free to follow me on social media at the bottom of the screen if you want to see what's coming next on the channel before it gets to YouTube be sure to hit the subscribe and the bell notification button if you're into new car reviews that is what we do here on this channel after all do appreciate you guys watching more than you know and I will see you guys all in the next video stay gold


Hello friends, I am Sanju Vinay, Assistant Professor in Mechanical Engineering Department, Walton Institute of Technology, Singapore. In this video, I am explaining rolling contact bearings. At the end of this session, learners will be able to identify the rolling contact bearings and also they will be able to select a suitable bearing according to the given application. Bering is a mechanical element which is used to guide the relative motion between two parts such as shaft and the housing with minimum friction and also to support the loads acting on the shaft. The friction between the elements of bearing is rolling 1 and as rolling friction is very less as you know, these bearings are also called as anti-friction bearings. The basic elements of the bearings are shown over here, you just find this is the inner race which is normally mounted on the shaft which is rotating. These are the balls in case of ball bearings or rollers in case of roller bearings which are being maintained in their radial position by cage or retainer. So, this is third element shown over here cage or retainer which used to separate the balls from each other and to maintain them in their radial position and that is why it is also called as a separator and then there is outer ring or outer race. So, this is the construction of the bearing for ball or roller bearings or as far as the classification of bearing is concerned basically these are classified as ball bearings and roller bearings. In case of ball bearings, there is a kinematically it has got a point contact between the ball and outer race and ball and inner race. So, point of contact is a just point of contact and that is why it has got very minimum frictional losses. So, temperature rise in such bearings is comparatively less and that is why they can be used for high speed applications but at the same time being the contact area is very less the load carrying capacity is also less. So, these are used for moderate to low load carrying capacities but for high speed applications. In case of roller bearings as you see over here there is a line contact between the roller and the races that is this is a outer race or inner race the line of contact is there because the area is more for contact the load carrying capacity of these bearings are very high. So, these are normal use for very heavy radial loads or thrust loads in case of thrust bearings. However, they can be used for moderate speeds further these bearings are classified as radial bearings and thrust bearings. So, in case of radial bearings we find is a radial load that is perpendicular to the axis of bearing or perpendicular to the axis of shaft these bearings are called as radial bearings. In case of thrust bearing we find that the load is acting along the axis of the shaft or axis of the bearing and that is called as a thrust bearing. So, accordingly there is a change in some constructional requirement. Now, here we find some types of rolling contact bearings. So, here I have shown some ball bearing types and roller bearing types. So, basically this is a deep groove ball bearing which has got a deep groove in the race inner and outer race in which the ball is fitted and there is a rolling friction of the ball with respect to the races. So, these bearings bring a deep groove they can sustain radial load as well as some moderate thrust load. So, these bearings are suitable for radial loads as well as a low value or moderate value of thrust load and being these are ball bearings they have got advantage of minimum friction and high speed application this can be very well used for household appliances or high speed applications having moderate or low capacities. This is a angular contact ball bearing. So, here the shape of the outer race and shape of the inner race is so adjusted that the balls have got a contact with the inner race and outer race the line of action is inclined that is the load is transmitted from inner race to outer race if at all it is transmitted along the inclined line and the line of action of load is in inclined plane rather or inclined line it can be resolved to components vertical and horizontal. So, it can sustain radial load as well as thrust load. So, whenever the bearings are subject to combined moderate radial and thrust loads then these bearings are best suitable that is angular contact bearings. This is a self aligning bearing. So, in which self aligning principle is used that is whenever there is expected misalignment between the shaft axis and the bearing axis then this has got assembly such that the shaft is fitted in the inner race and the ball. So, this is one assembly which itself rules according to the misalignment it rolls over the spherical surface over here and gets adjusted itself so that this misalignment is absorbed. And that is why whenever misalignment expected to exist then these bearings are best suitable. Same principle is used in case of roller self aligning bearings the principle is one at same however it is load carrying capacity is compared to more than these bearings. Then we see few of the roller bearings it is a cylindrical roller bearing in which there is a line contact and as a contact area is more the load carrying capacity is high. So, these are basically used for heavy radial loads acting on the bearing these bearings are used. This is a taper roller bearing in which the rollers are arranged along the conical axis like this one and because of they are arranged in conical axis along this line. They are subjected to radial and thrust loads. So, they can sustain very high radial and thrust load as a combined load on these bearings. So, these are used in machine tool spindles wherever we expect that the cutting forces are coming in all three XYZ axis then these are the best suitable bearings they give even rigidity to the system more and that is why taper roller bearings can be used. This is a needle roller bearing. In case of needle roller bearing the length of the roller is comparatively very high that is normally L by D is 4 to 6. And that is why the length of contact or the area of contact is very large being the area large it has got very high load carrying capacity. So, radial load they can sustain very high in this case and at the same time being the diameter of the rollers are less the overall radial dimension of these bearings are very very less. So, this is a most compact bearing in radial dimension carrying very high radial loads. So, these are also used in gear boxes or rigidity requirement wherever it is there and the radial space is a restriction these bearings are best suitable. However, the frictional losses are somewhat more. This is a thrust bearing in which the thrust load is applied and accordingly the construction will support the load. Now pause the video and think over this point that what type of bearing can be used for table frame. So, here I have given some comparison of ball bearings where factors are considered like radial load capacity. If I take a deep groove it has got a good radial load capacity, angular contact bearings also can good capacity that is low to moderate load they can sustain whereas a self-alarm bearing in comparison has got some low capacity. In case of thrust load deep groove ball bearing can take limited thrust load whereas angular contact bearings can take very high thrust load. So, they are excellent in that whereas self-alarm bearing cannot take thrust load as such. The combined load if I take combining these two once again it is a good in relationship where it has got excellent capacity as a combined load whereas good capacity. Life expectancy is excellent in this case deep groove ball bearing has got very good life and that is why they are used for high speed applications household applications. Alarm contact bearings are also excellent whereas comparatively self-alarm bearings are fair. So, as far as the speeds are concerned these two bearings can be used for very high speed whereas this can be used for somewhat comparatively less speed. So, this is the comparison of all the bearings. Here is the roller bearing. So, similarly I can consider roller bearings into account in which the same thing is here radial load capacity excellent everywhere thrust load is compared combined load is poor poor but taper roller is excellent. So, many of the machine tools spindles are used life expectancy is excellent almost operating speeds are better and here it is poor. So, this is the way one can compare all the bearings to select a proper for given application. So, these are my references. Thank you.


just as playstation 5 It doesn't see sony playstation 5 when you see nintendo switch logo. It says literally nintendo switch That's what that's exactly what i'm saying is that the only exception i'd say to that is like some of their handhelds You don't say the nintendo game. Yeah, that's true. They don't say nintendo game boy That you even nintendo dds Even nintendo ds that I don't think it was in the logo was it I'm not sure. I'll have to look up the nintendo ds logo 3ds for sure No one everyone for the most part 90 percent of the time. Oh, it was in the logo. It was in the logo for ds Was it for 3ds? Let's see here I don't remember because I never referenced it as that. Yeah, exactly. It was in the 3ds logo too. Yeah I it's interesting. Um, just because nintendo has put their name so forward like that, but I honestly I look does the switch branding matter? Yes, because it represents Overall what the family of systems is which is a portable hybrid that you could take with you and dock with your tv And if that's what you're going to keep making moving forward Then I think it's really important you maintain that branding because branding recognition is Something that you can't really fully ever replace and we see nintendo try to replace their own branding several times And not really be able to do it or use branding that they killed You know we you um With a system that really wasn't the same sort of concept system as an example If they want to turn the we and our next system would have been more like motion control e You know more like even having more towards the vr segment, but like happy if it's on motion controls Yeah, another we name could make sense for that because that's like a natural evolution of what we was doing But that's not the direction they went. They went to traditional controllers with a screen Which is like not at all what we was and again, that's just another problem with the we you branding but um, it's interesting thinking about the importance of brand recognition like as an example Um, you know, we just call things iphone. Everyone knows they're apple Everyone knows apple Right um And the iphone itself or the ipad or whatever that these are household brands that when you're making similar samey products You're going to keep using that brand. I think that's what I think that's the same for switch switches Branding relevance hasn't gone anywhere software still selling like crazy even like this long into it The system's still selling pretty well considering how how long it's been Thing that could make nintendo nervous about that is that's exactly what they felt about the we And there are so many things that are different than that. There's yeah, I I think shantara furukawa is At least I hope he is we're about to find out. I think he's a very shrewd businessman I think he is because he brought it up himself the cliff nintendo always falls off of he's been at nintendo long enough As a numbers guy to see the cliff happen like several times under owata And he said that's my number one goal is to not let that happen and I and I think um, he's examined a lot of the situations on Um, I'm assuming outside of nintendo like how did other successful tech products move on to their next product and maintain momentum Something we see in the chat every time this topic comes up is like people are like, oh, what about the super nintendo switch or super switch? The reason I hate that is because it just sounds like a switch pro It doesn't necessarily distinguish itself as a new system Which is your entire point, which is why you have to go with switch too because it makes it clear that it is a new system Especially a company with nintendo that does make sure that it's the next switch and you could argue well New nintendo.   No, no, I I'm not if if it is if it is the real name. I will be very Well, I mean, I absolutely think that the switch branding is important because Let's be serious for a moment. Okay The strongest branding nintendo probably ever had was the ds right 150 500 Second best-selling video game console of all time very strong branding the problem they had is that Felt cool at the time because of the touchscreen, but by the time the 3ds came out We all had touchscreens in our pocket.  It's not even a novelty. It's a convenience. It's essential Oh at this point. Yeah. Yeah, like and other companies are copying it You know, it's so many it might not only be doing like the little streaming tablet thing But we're looking at all these gaming PCs that you can dock and use the monitors and stuff It's it to me. This is one of those things where nintendo hit on something the market Was ready for and didn't really have anything serving it nintendo proved that market exists and now they can sort of own it and It would be dumb to abandon the branding That owns that market and try to have a completely different branding that people don't associate with that market right now Which is the biggest brand in In hybrid handheld systems. It's the biggest brand back up to back up your point even more Nate is like The problem is you're right. So switch is The brand and if you go with anything other than two It could come across as just the pro version of a switch Yeah Okay Sounds like an upgraded version of the switch. It doesn't sound like a new console. Yeah switch two is like, oh dude I got to get that new switch The only way to keep switching the branding and make it clear to not to us not to the people that play video games at the time but to the average consumer That and and that is very important to nintendo because so many people that don't play video games bought a switch Play animal crossing or whatever or to play mario kart with their friends because they missed playing nintendo To make it clear that this is a brand new next gen console Is to add to that's the only thing you can add to it anything else you just want to note something So, uh, the thumbs up is appropriate here because uh for the first time in podcast history Not only did me and jake agree on something me and audras agreed on something earlier as well. This is uh This is crazy Now it's just me and nishwick got to give them the same page and remember we have the whole the whole, you know Quad tuplet here going on. Um We had another Is zeno blade the best rpg series i love nintendo Is no wait you guys both both said something to me at the same time Sorry, well, i'm just trying to get i'm just trying to make dreams happen Nate do you agree that zeno blade is the best rpg series nintendo has? Oh a hundred percent, you know This was a question for nate. I already know what your answer is We know you you and zeno blade like Two pieces together I want to know your answer. They don't what other rpg's do they even have active fire emblem?  Yeah, okay. So what was the question again? Is zeno blade the best rpg series nintendo has the best rpg series. I mean do we count paper mario? Yeah, yeah, I guess you are in the leegee Well, you're saying active paper mario is now more active than it was Yeah, paper mario. There are mario's active paper mario's active a fire emblem Which is a tactical rpg, but it is an rpg Um, and then obviously we have zeno blade Fire emblem fire. Yeah, I said fire emblem already pokemon We have like three or four of them pokemon obviously pokemon's probably the most important But that wasn't the question the question was which one's the best Quality gaming experience.  Well, here's the thing It's a tactical rpg and I don't really consider it the same thing as zeno blade even though they're both rpg Like I like fire emblem more. I enjoy let me put it this way I enjoy fire emblem because I like tactical rpg's way more than traditional j rpg's Like I love them way more than that. So like I really love fire emblem.  Oh, I love all this stuff growing up For me personally as I've gotten older the systems are too complicated now. Yeah It's too complicated now. I I need to be simplified They gotta be but I might want to play an easy mode. That's not the way the game was intended Like the systems are just overly complicated now for me to understand what the hell i'm doing you completed x then Yeah, I know the most complicated x is a different time of my life X is a different time of my life So when one came out I was in college and I just picked it up and didn't really play a lot of video games Um, but when when x came out that was Hey day of we you and zelda informer and I literally was playing we you like 20 hours In my opinion is the best zeno blade game that's it's the best it's the best exclusive game Here's the thing. Oh, yeah When I go play zeno blade x today, I can't play it for more than an hour because I I always need to like No bestiality based video game is zeno blade one. Oh, here we go. Um So Anyway, so for me like fire emblem z like the answer technically to your but like Look zeno blades more critically acclaimed right like the general populace is going to say it's zeno blade Clearly I will you know at least learn more about you even though I couldn't get us I'll say this When it comes to their their mechanics and yeah I will agree fire emblem is more approachable gameplay wise and zeno blade is but I'll say this zeno blade is easily The best nintendo has going for its story Wise for any of their franchises right now More than zelda more than fire emblem more than Like metroid or anything zeno blade is Obviously 99 The story of how The zeno blade has an entire race of people where if you're the king It's required that you have children with at least one other species. Oh my gosh. All right So, uh, samuel talks about games uses member chap to get in uh switch to release timing and announce timing predictions Uh, he predicts march reveal for a september release Uh, and it won't be called switch to sadly You know what we should I should even brought this one up you just for anyways Let's get let's get to what the actual thing was though switch to release timing and announce timing. So Prediction when is it coming out? When are they announcing it? It's getting it's getting it's coming out tomorrow It's gonna be um revealed next month I I really hope they say something substantial by march because you know the whole nat the hate march thing I I would like if we Wait, I want I want to ask you guys this. Do you guys still believe the november thing with the amiibo november thing? I never had Here's the thing. It's just speculation based on prior announcements of things Technically we we're not gonna know. We'll know in the next month like that. Yeah, it's one of those things I never believed I talk about it either happens Or it doesn't like there there's no in between but we don't know right? So that's why we talk about We'll find out there's evidence. There's there's there's supporting evidence. There's strong speculative evidence That something is gonna be announced. It doesn't have to be a new platform Something's gonna be announced. Yeah I'm very vocal on here that I've Thought it would be in march, but I gotta admit with everything that's come out. I feel like it has to be actual release Is probably September Okay Look, I think april april announcement launching in august Yeah, I I'd say it's right around there probably That's kind of what I'm feeling right now. However, it could be sooner You know, we have we have these stk updates from from the ding You know recent update the switch has to do the next system we got Um, obviously dev units are out there like crazy. Um, you know, they're demoing it to a bunch of developers Uh You know It does launch unlike The ps5 and xbox were it'll be ready to go. I'm sure they'll have a great launch lineup Yep, there won't be any missing features like Headphones that launch that they won't add until five years in Exactly when I was crazy a year from now It's gonna be in our hands probably it's october if like even if it's even if it's not in our hands You're from no, it's gonna be about to come out like oh my god. I'm lining up tomorrow night Right. We're literally gonna be doing the podcast from our phones waiting in line Oh man, yeah, I don't big is the nintendo prime podcast going to be the Wednesday after they announced switch to I might not be very big because well the Wednesday after it's announced Yeah, everyone's gonna also all anyone's gonna want to talk about once. Yeah That's all of what the entirety of gaming twitter is going to be I'll say my biggest live stream will probably be when I stream me at the midnight launch That'll probably be my biggest live stream ever because when I did it for ps5 and for xbox Dude, we have like 1500 1600 people watching and that's not even in that wasn't even nintendo systems So when it's a nintendo system, I'm taking notes. I've never I've never I do it for my phone There's a I literally have a second phone specifically just to stream off it when I'm when I'm waiting in line Yeah, yeah, although I will I make my setup more complicated? I don't I don't even want to think about How many viewers I'm gonna have on that live stream Yeah Jake will be like do pre-order live streams. Yeah That's what I'm gonna be helping everybody He might have like 40k I wanted to ask you jake because like a lot of my friends have been telling me like oh man It's gonna be so hard to get a switch to it's gonna be so hard How difficult do you think it's going to be to get a switch to versus how it was for ps5 and series x? I think It will be easier Yeah, but I think that recency bias will make people be like this. It's just as hard Because it is most people won't get it I'll say this they want pre-orders available in store. So it's automatically easier Yeah, because you can just go to your local store.  It's all online for context of this I have people saying like the spider-man PS5 plates were way harder than the ps5 ever was and they they're the hardest thing that it could get in a very long time But they when they're not nearly as hard as it was the the spider-man plates are not as hard to get and And the ps5 is being scalped for like over a thousand the the plates are being scalped for like 200 You know, so that that shows in itself And they've had restocks and people are acting like it's harder than the ps5 ever was and I'm like you guys just have It's recency buys. Yeah, they don't remember what to do. It's gonna be way easier than that launch But but the people that don't get it put it this way. I'll have my hands on multiple pre-orders, which we're already telling you It's easier Yeah, right Yeah, I think it's a giveaway have reports that nintendo wants to really build up a lot right like they stock If they do in september they will Yeah, yeah Yeah, it's it's gonna be it's gonna be interesting You know, that was one of the reports that nintendo wants to have more stock at launch than they've ever had before Is what's that gonna do? I don't know. It's just gonna put more switches in the market They'll sell them all As long as they do in-store pre-orders, I don't worry about anything because not just because I live in a smaller town So it's easier to like try to be one of the first people to get pre-orders in it's just because fighting with millions online is Harder than fighting with like a hundred people that try to want a pre-order from the same store Like you could literally just go camp out and get your pre-order in if you want And you just know you guarantee it versus like online where you hope you're going to go through checkout and Yeah, and I know those all the tips jake went through all the tips of the ps5 and also yeah All that stuff there's all those tips to get through checkout and get through this and that but You're competing with bots. You're not competing with bots at an in-person store So yeah, it's it's as long as they do that. I don't really care I also Also a key thing to remember and I don't know what they're going to do at this time. They did this with switch in my area Walmart 24 hour walmart's so they they take they take pre-orders, but they always have extra consoles on top at launch They never pre-order out every system. They're going to get So if you're willing to go away to the 24 hour walmart, you can literally walk into midnight and get it I mean actually He has five and series x as well. I think right and especially the halo edition series x Yeah, there was lines like wrapped around best fives on that release. Yeah. Yeah, there was yeah, so So we'll see obviously, you know the hype the hype will go crazy whenever they decide to announce this thing Should be announced within this first six months of next year You would figure so yeah It's no later than june if it's going to be a holiday release. So Should be uh, should be quite crazy. We have we have no idea when it's going to come it's it's going to be absolutely nuts when it does and uh All right, I gotta roll when that happens. It'll it'll be really nice Hopefully I no longer have a keg when that happens. Um Anyways, well, that's going to do it for the internal prime podcast this week episode 41 if you guys want to check out The podcast anywhere podcast I heard we have the audio version that goes up on pretty much everything I'd say google podcast but they closed it. So i'm sorry Um, but it's everywhere else But before we sign out here, let's go around the room let people know what you got going on where they could find you Uh, jake with the cake. I believe you have something happening here soon that people might want to go watch Oh, yeah, um, you can find me jake randal on youtube or twitter slash x And uh, I'm doing a couple live streams. I think I'm going to be doing Uh, I'm I'm considering doing a playthrough of uh Miles flat iron man miles morales on saturday But the big one is next saturday the 21st I'm streaming for 12 hours straight to do a full playthrough of the quarry Which is a horror game for halloween It's a choose your own adventure game Um, where you have choices and every choice will be a poll in the chat where the chat What what happens so it's basically we're playing through it together majority rules Whatever you guys say Even if you tell me the the wrong stuff whatever people vote, that's what we're going to do And I've never played the game before so that's that's a good idea That's the same devs as until dawn, right? I think so Yes, and I did the same thing with until dawn a couple years ago And it was really fun and I wanted to do it last year and I I didn't so Now we're doing one more thing about that is every hour during the 12 hours on the hour.  Go go watch Exactly. I'm I'm sure I'll I literally just I literally just land based on myself say they except you actually get your prizes I'm still shipping stuff from last year, so It's a problem over here. Um Nish Quick Pops, what you got going on? Where can they find you? Mr. Zeno blade? Yeah, uh, I'm nish quick pops a k Mr. Zeno blade you can find me on youtube at nish quick pops and twitter slash x and instagram at nish quick pops Also tiktok. I've been seeing some success with youtube shorts and short form content on tiktok and youtube shorts, but yeah, I talk Nintendo and jrpgs Instagram over here. Hello. Yeah, definitely check out his instagram everybody yeah, but um Yeah, nintendo and jrpgs. I haven't talked much about zelda or nintendo in a while I've been on the jrpg binge I talked about like games like tales of a rise and some other games. I don't even oh, I did a really I did a very like serious and like very kind of I I made a pokemon video basically and I was not beating around the bush.  We all agreed with you on one thing. Yeah, but yeah, you guys Pokemon you guys should check out that video And yeah, there's nothing else. Yeah Double fist pump. Yeah I'll do it like that.  I keep it clean. I will say this You guys are excited for persona 3 reload Check out my channel because I'll be talking about that game Quite a bit near the end of this year and approaching February. So yeah, I love persona Oh, yes, I'm very very excited for reload Especially since this is the first time I'm playing Persona 3. I've never played vanilla fez or portable So this is my first persona 3 experience They cut the fez content, right? It's not in it They cut out the answer and they cut out fem C. That's all they took out Basically, most of everything else is in the game all the quality of life stuff from fez Like igus's social link and then the part-time job stuff and all that stuff from fez Oh, sorry, wasn't there only the female protagonist and the answer epilogue are not in it Which I think I think it's fine because Yeah, I mean they're adding so much new stuff into this and it looks amazing. Oh, yeah I'm just restart. We got going on. We're gonna find you Um, you can find me at Andres restart That is the truth That's uh Pretty much all I got to say I talk about Nintendo every day So check me out. Wow. You sound so excited about your channel, man You're so hyped for what he does for a living. It's so cool. You know what I'm gonna be more hyped You should check out the Andres restart podcast every monday at 7 p.m. Central on his channel It is a hoot and oftentimes he's talking about exactly what we're gonna talk about on this show Just a few days earlier with his friend Brandon and who knows other special guests that he sometimes drags into the boat Oh and uh Go watch his last three videos because they're all bangers and they should all have Video on zelda remakes. It's really good. You guys should check that anger I hardly know where You know what you're gonna get up right up close and personal aren't you with the trifecta Anyway, thanks guys All right. Well, that's gonna do it. Thank you guys so much for tuning in and uh, we'll be back same time next week But it's a special episode. Oh, yes We got Andres restart. We got jake randall should be eric more back assuming he's doing better We'll hopefully he's doing better. We also have rgt 85 coming on that, you know, apparently I pulled them in But you know what the biggest he's named Nintendo youtuber and changed it every time he tries to change it back Rgt is the best you'd you'd probably find that funny. Um And then we have reviewed that usa coming on yep as well So we got a we got a six pack next week. It's gonna be a lot of fun.   All right guys, we'll catch you next week boldest gay game of the year