Good afternoon, this is Melissa with thestockswitch.com and welcome. Welcome to Netflix. I thought I would go over this exact play. If you had done this today, if you wanted to do the aggressive buy, if you had read the gap where it was, this went to the number. The went to the number that I thought it would go to when I did the video around lunchtime and I was so just overwhelmed about the beauty of this thing. And basically this is over here for at least today. It's quarter of three. This isn't going to make a new hide today. But it did go up to 310. And actually almost got to the second target I had given which was 312. It got up to 311.65. I don't think this gets over this today. But this is going to close looking like this. Beautiful. Just amazing. And once again, I mean you cannot buy this here in a 15 minute chart. And you can't even buy this in the five. So guess where their entry was? The one minute. And the only way you can be aggressive with something like this is if you know how to read gaps because this is very aggressive to do something in the first five minutes of the day. I do it all the time. But that's because I understand how to read gaps. You can see the gap up here. Beautiful. Buys right here. Right over 297.50. And the stop would have had to be a buck. It has to be down here at 296.50 because of the spread in Netflix and the cushion. And it just never looked back. As soon as it triggered you up and you never looked back. The whole day. And of course the first target was the high. 305. Back here from 2011. It was July of 2011 when it hit up over the number here. There. Where is it? I just lost it again. Where is that guy? It was it. It was before it got down actually. Here. July. So 305 was the target. But you know once it hit over that and kept going. Let's see what time of the day that was exactly. It was in the morning. It was here. Here. Here. This far here. 1025. It was late but it was in the morning. That it went over that number. She could have actually kept it on through. But you know it is hard to stay in something like this. So you might have been out in here. And this is still an amazing unbelievably terrific trade. But if you stayed in it to you know to 310. Okay. Which was the target I had said. And if you only took 100 shares. So 100 shares would have meant you risked $100. If you stayed in it to 310. With the entry at 297.50. You made $1,250 today. So it's a you know. That is a good risk to reward. It's over 12 hours. You know this is what happens in God plays. And again I had I discussed this in a webinar the other week. This is a perfect picture of power. This is institutional buying. There's no way about this. No way know how. And do you see the people that try to short this thing? They think well it's going to come in. It's starting to get climactic now. This is what people say. Absolutely not. This will close looking exactly like this. Or something even bigger. It's not coming in. It's not coming in at all today. It's 247. This isn't coming in. This isn't going climactic. There's nothing. This is why it's so important to understand even gaps. Because if you try to do another strategy within a gap play. Of the day of the gap. The day that it's doing it. It's not going to work. It's actually a terrible thing to do. Because it's dangerous. This is a power trending all day. It's not going climactic. It could go another $20 and not go climactic. It is real buying that's coming into the stock today. It's actually new buying that's coming into the stock today. So no one's selling out of it. It's not going red today at all. Not for a dink. This is people taking some profits into here. Barely. Okay. I mean this is new buying in the stock today. Institutional buying. New buying. In the bullish gap. The continuation gap today in Netflix. That took it over the highs. Over the all-time highs that it had. And it is making all-time highs today. Today Netflix made all-time highs. It's never seen this number before in its life. And for people that, you know, don't understand how to read gaps. It was actually really an easy read for me. So happy and proud of myself for seeing this this way. How did I figure it out? How did I know how to do it? Because I read this gap. I read this gap here. This was an absolutely amazing perfect gap. And the thing is it was a corrective gap. So what happened was Netflix had been in a downtrend for a while. And when the stock gap in January of this year there, it was no longer in a downtrend. It was at that moment an uptrend. And I remember even looking at this today, this gap, and people were wanting to fade this. I said, don't fade this. This is a bias. This is an immediate buy. Again, this is institutional buying. You can see the fall through had had the second day into itself and has never looked back. And all the nice beautiful continuation gaps all the way up. So the fact is that it was easy for me to read it because I rate gaps using a 26-point rating system. And this thing did it. It did everything we're supposed to do and then more. You know, I'm getting the $500 number for the Target in a year because I'm just good at seeing these things before they hit these numbers. Just like I saw the 310 today. And even 312. I mean, it got within $0.35 of that Jareem Target at 312 today. So, I mean, there's nothing you can do with this here tomorrow. But it was a beautiful long play today. And it's just higher and higher still. And, you know, once again, the day of the gap, the day of the first original gap is the best, best, best day to buy these things because you don't even have to worry about re-entering them or doing ads or anything. You just want to hold your original position. And this was a nice entry here. This was a nice entry here on this for a swing trade or a court trade. It's really, you know, it's really a court trade because it's been nine months till it hit this number. It took nine months to do it, but it's still less than a year. And a year from now, I think it's going to be worth almost double what it's worth right now. So, if anybody did this, you just hold on to it now. You know, you can take some out today, but why? New buying came in. This is new buying today. So, you know, as an intraday play, I don't know what this is going to do tomorrow. I think it'll boop up over 315 at least tomorrow, but it is very hard to buy this tomorrow after this type of day today. Intraday is an intraday day trade, but today it was an amazing, beautiful gap and the aggressive entry on it was the only, only technical entry in this stock position today. There was no other entry that made any sense. No other entry that had the same risk to reward. No other entry that you could have done with the same amount of conviction. The only one that you took that didn't suffer. And if you took any late entry in this, you suffered because it wiggled and jiggled until it went again and really had a huge stop to take this later, like way bigger than even the morning one. Again, I don't think this gets over the high here before they close, but I think it's possible. Let's just look at the 60. Nah. Do you see how people think things are going to climactic? This is power, power, institutional buying, money, money, money, money, money, money. Remember, buy, strike, short weakness. Don't do the opposite. A trend is your friend. Read the gap. Train in the direction of the gap. Gap fills don't work. I hope everyone sees that's insane. Do you see how insane that is? You may as well just say this is never going to fill itself now. This is a bullish gap to play in the direction long. Look at this thing. This is incredible. Look at how fast this is happening. The long-term picture of this chart, this 200 has absolutely made a scoop. The 200's made a scoop. For the 200 to make a scoop is power, power buying. Really nice. And you know, the market's lifting higher. We're in a bullish market, so why not? People want to invest in something. They see the potential. You know, they're doing it. They're putting their money in this thing. You ride it up. This is Melissa with the stockswish.com. If you're interested in learning how to rate gaps or learning my 26-point rating system, email me at melissa at thestockswish.com. The next class is this weekend, Saturday and Sunday. From 9 a.m. to 5 p.m. eastern time, email me if you'd like the information to sign up. I have some spots available left. I'm taking a limited number of people for each class because, you know, I want to be able to answer everyone's questions in the two days. It's an eight-hour day at both days. So if you'd like more information or to sign up, email me at melissa at thestockswish.com. Thanks, everyone. Have a great day.


My name is Keith Kirkland and I'm the CEO and co-founder of WearWorks. We design products and experiences that communicate information through touch. Our first product is called WayBand and it's a wearable tactile navigation device for the blind and visually impaired. Basically, we figured out a way to guide people to an end destination using only vibration without the need for visual or audio cues at all. We started with the use case of navigation. Initially, we just wanted to get people out of their phones and back into the real world. But the more we dug into it, the more we realized that the power of the blind use case was so profound because no one had come up with a solution really to address. The first person that we met who was blind was Marcus Ingle. When I first started using the device, I wasn't really sure what to expect. It really ended up turning out to be even better than what I was imagining. The ability to convey information to me just through vibrations and vibration patterns was really amazing. And not only that, but when it wasn't vibrating, it's still giving information that I am on the right path and navigating in the right direction. It was completely intuitive. While I was out using the device, there were two or three motorcycles that drove by. If I was using the voiceover feature on the iPhone to navigate, I wouldn't be able to hear that over the outside sound. That was an ability to bring in another one of my senses and be able to navigate with that sense of touch. We worked with Marcus, and then ultimately Simon, who's our blind marathon runner, he reached out to us and said that if we could have our device ready for him, he would run the New York City Marathon with it this year. We knew it could work, but it had a lot of kinks that needed to be worked out. So over the six months, we worked with Simon. We sent him the devices to test. We broke devices. He broke devices. We sent them new devices to test. Within a few weeks of the marathon, we finally had a product that we thought really could do what it needed to do to get Simon through the entire race. And so on November 5th, 2017, Simon got to make history as the first blind person to run a New York City Marathon unassisted.


All right, we have a legal practitioner right now, Elvis, as he had joining us to talk more about what's going on in those states. Good evening to you, Barista. Thank you for joining us on Denise and plus TV Africa. Thank you so much. Barista, can you hear us? Barista, can you hear us? Yeah, good evening. All right, in recent developments, the deputy governor of the state, like you just watched, apologized to the governor. Did it come to you as a surprise or how can you just, you know, analyze all that's going on in those states? Well, I mean, it's not surprising. I don't really see a way forward for deputy governor. If you have watched legal developments in the states over the last couple of years, you have seen who are cared to have been a very great synergy between the two of them.  But one thing important is that, like I understand it, once the breach of trust, once the other party feels that there's no other trust between them, it's always difficult to come together and work together like the deputy governor suggested. You recall that some time ago, he fired an action court seeking to preempt what appeared, what he claimed to have been an attempt to impeach him. But the governor had said that, you know, there was nothing like that. And if you have watched all that has been happening in the dual state, you will see that, you know, the deputy governor is perhaps the most popular deputy governor in the country. And perhaps the most involved deputy governor in the country has been very involved in what has been happening. But unfortunately, what has happened has been seen as politics. It is not all connected with his ambition, the deputy governor's ambition to succeed his boss and to appear that his boss is not supporting that move, to appear that the boss has other intentions in terms of who his successor should be. And that appears to be what is happening between them. And because of the way the governor has treated the deputy governor over the years, obviously he became a little bit powerful, he became an effect he could do a lot of things. For example, you know, there were innovations that when the House of Assembly was being upgraded, he was trying to get different certain papers as against what the governor wanted. And you know what I meant. So, you know, if you know the governor is a very determined person, that he wants something done, you know, history has shown in the last years of being governor that you always find the way. And so that's what's happening right now. He's trying to protect himself. He's trying to render the deputy governor politically relevant to the scheme of things. But you know, as a legal practitioner, I would say that we still have to comply with the laws of the land, you know, in the play of the concert. You know, the scenario we saw at the time when he's been prevented from going to the home base, there have been harassed, all of this, you know, too much show of power that shouldn't be the democratic setting. As much as I believe that the governor is genuinely, has a genuine reason to be angry with the deputy governor, whatever anger you have has to be within the democratic parameters. That has to be shown within the limits of the country. And so, you know, I'm not speaking for either of them. I'm just looking at the issues that I see there. And I feel that the governor should tour the line of democratic, uphold the internets in his deeds with the deputy governor. And I also believe that whoever has an abysm, you know, pursued within the limits of the political structure that he had available to him, cannot want to assure your master and expect that your master will support you. I think that's really what is played out in those things. Okay, so what does it really be of now for the people's democratic party judging by the fact that it's just one year they have to the end of the administration? Don't you think it would actually affect maybe the chances of the party in maybe forthcoming elections in the state in the future? I mean, the people, the PDP is already seriously challenged in those states. If you look at last election, the Labour Party came from nowhere to almost become the dominant party within the state. Probably to the invention of other forces outside of, you know, particular democracy to stop. PDP has lost a lot of political value in the states. I don't want to speculate on what is responsible for that. Many people believe that the relationship between the deputy governor and the governor is practically, you know, to some extent responsible for what has played out because the PDP as a condition for giving or bashing the ticket wanted to have their own person as the deputy governor. They wanted to be out of the way. But unfortunately, you know, I was very loyal to the deputy governor. He insisted on going ahead with him and that created a lot of cracks within the PDP. And up to now, the party has recovered from that. And, you know, this is the move that the governor has also seen as a way of placating members the lack of fire of the PDP to see how he can governize the party towards installing in court the successor next year. But, you know, the chances are seriously dented by the ongoing feud between the good parties and then the rise of the party as well. Of course, the firepower of the APC considering the caliber of questions are also, you know, talking about comrades of Schumann and the other north. But this would play a very major role in affecting the chances of the party. But the way I'm aware, the government is able to navigate through this. We'll go as we tell what will happen in the next lecture. All right. Thank you so much. We have been speaking with a legal practitioner. Elvis Asya is under development in a state specifically regarding the leadership tussle between the deputy governor and, of course, his principal. Many thanks for being a part of the news tonight. Thank you. It's been a pleasure.


I am Rajesh and today I am going to use some of the problems in the how to handle low memory scenarios in android, yeah coming to the agenda initially I will cover how the process management takes place in android and then even though linex android is just the same linex kernel but there are some few differences among between android memory management and linex memory management but today I am not going to tell all the details but I am going to cover some of the details yeah what do you mean by low memory scenario yeah generally they will call low memory scenario is nothing but if the free ram in the if the free memory in the ram is less than some threshold they will call it as a low memory and what they will do in the low memory scenarios that low memory killer and this activity manager service in the low memory scenarios they will kill some of the applications and we will see what kind of applications will be killed and what kind of applications will be killed in the later slides but the system does not know whether this kind of applications are interesting to the user and can we skip these applications it simply kills based upon some of the coding on static rules. So we have to improve the functionality such that it should not kill applications which are interesting to the users and if you manage the low memory scenarios in an effective manner we can improve the speed of the device we can see in the later slides how can we achieve all these factors yeah now coming to the process management in android in simply in the process in the android it classifies all the applications into different groups and I will explain all the groups what they mean foreground means the applications which are user currently interacting they all applications comes under foreground group and visible are nothing but the applications which are in the back but they are supporting to the foreground applications they comes under this visible process and now coming to the service process yeah the apps which are running on the background using that service component I hope all of you know that android application has four components activity services and content providers and broadcast receivers. So the apps which are running on the background using the service components they will come under this category and the apps which are reside on the back they will comes under the hidden that means they are not using service component and they are using some other components yeah now coming to the content provider content providers are nothing but the they will provide some structural data and other applications can access this data such type of applications comes under this content provider group and now coming to the empty processes this is the new thing in the android because in general whenever the in the line x if the user terminated from any application or any process all the details belong to that process are completely removed from the RAM but in android it does not do like that it keeps all the code belongs to that application inside the RAM itself we will see why it keeps and what are the advantages and what are the disadvantages in the next slides okay I hope remember this this group empty process empty process are nothing but I am repeating once again in general even though user terminated that app the code belongs to that application still remain inside the RAM okay yeah basically this snapshot I took from the aakash tablet here I am listing different applications which are reside inside the RAM and yeah the apps which are rounded in this red color they are foreground applications and the applications which are rounded in this blue color they are the empty applications and in this sky blue color they are content provider application so I want to show through this image in the RAM we have different kinds of applications like empty foreground the content providers and so most of the times our RAM was filled with so many applications but you can if you clearly see the image there are many empty applications in this image because our RAM always filled with so many empty applications like this is 1, 2, 3, 4 so many empty applications are there so we will see next what are the advantages and disadvantages yeah one of the advantages of the empty applications is yeah we can ever reduce the load time that means in general whenever user clicks on an application it checks whether this application is available inside the RAM if that is not available inside the RAM it has to load that app from the SD card into the RAM and it has to start so that is the process if you keep the applications inside the RAM that means even though user terminated that application if you keep that app inside the RAM if you revisit the same application in the future we do not need to load the same app from the SD card into the RAM so we can avoid this load time such that we can improve the speed that means most of the times you may felt when you restarted your tablet if you click on any application it will take too much time to load in the first time because it has to load from the SD card to RAM and then it has to start if the if you close that same app and if you reopen it will come immediately the reason is it load it still reside inside the RAM so such that if you keep the applications inside the RAM we can avoid this load time and also we can reduce the power consumption that means it took and it took lot of power to load the application from SD card into the RAM so we can skip these two this is one of these are the some of the advantages of the empty applications now we will see what are the disadvantages of the empty applications if you keep inside the RAM for example let us assume that your RAM was filled with so many empty applications and now we are going to choose another application which is not reside inside your RAM so now what kernel has to do it has to kill some of the applications and make sure that free memory is available and free the some of the memory and then it has to start load the app from the SD card into the RAM and start so that means here one more lag time is coming that means killing the applications takes some time so we are adding some extra time also so if you have so many empty applications in our RAM we will increase the loading time for the apps which are not there in the RAM so these are the disadvantages such that so from we have advantages and disadvantages through this empty applications so we have to maintain some balance such that how many applications we have to keep and what kind of applications we have to keep and we should not kill in the low memory scenarios the apps which are interested to user so we will see how can we do that yeah I hope all of you know the how the booting takes place in the Android in general during the booting times system service used to start all the services like telephone manager service and activity manager service and other services we will see some of the drawbacks through this telephone manager and the activity manager services in the later slides yeah this is the snapshot I took from the Aakash tablet here I want to show that some of the applications which are reside inside the RAM which are belong to the making phone calls or contacts or some of the applications I hope all of you know that our Aakash tablet it doesn't have any feature to support the making phone calls and sending SMS but still and loads the applications which are supporting for making phone calls and sending SMS so such kind of applications are loaded into the RAM and they are residing inside the RAM you can see this rounded applications which are reside in the RAM and this is application which is holds the contacts and this is the application for making some third-party application for calls and this is the application which is responsible for making the call so if our RAM with was filled with such kind of applications even though our hardware doesn't support any telephone where sim they are simply residing without use without is less so if you identify such kind of applications and remove from the RAM we can use that memory for other applications here nearly these applications are occupying 10 to 15 MB so if you free that memory we can use the same memory for other applications so we can how can we solve this this problem simply just we have to modify during the boot time that if system service has to check whether the hardware support to hardware is supported to do phone calls or not if the hardware is exist then only load the such all such kind of applications if the hardware doesn't support you don't need to load such kind of applications yeah now coming to the activity manager service yeah this is the service which is reside inside the framework layer of the Android I hope all of you remember the layers of the Android and it contains four layers this activity manager service which I reside at the framework layer and this is the intermediate between the user and the background layers that means it receives the inputs from the user and executes the command that means whenever you click an app or whenever you want to close an app all the request goes to this service and it will do some of the it launches the applications and updates the status and kills the applications based upon the user request so this is the central coordinator that means intermediate between the user and the background layers so we will see some of the how it works and what are the some different problems in this activity manager service yeah now I'm going to show one more snapshot that means this is the snapshot I took immediately when the boot booting was over in the from August tablet but I found some interesting facts like that when during the boot time this activity manager service loads some of the applications into the RAM which for example I will show some of the applications like I installed a lot of applications on my tablet and for these applications like the board blue vessel and the asteroid and some next slide from manager and there are a lot of applications I have installed very long back and I have used only one or twice that's nearly one month backer surround but the problem is whenever the booting is completed that this activity manager loads all such kind of applications I will tell you in the next slide what kind of applications it will load immediately during the boot time so I found that I never used such applications I used only once very long back so even though I'm not using this kind of applications right now but they are all still loading into the RAM and they are residing in the RAM so if you avoid such kind of applications nearly all these applications are occupying 3.2 MB in RAM so if you avoid such kind of applications we can save some n number of applications into some 3.6 RAM so we can free some of the RAM and we can use the same RAM for the other applications yeah now I will tell during the boot time activity manager service loads some of the applications which have some features like this if any application has the persistent equal to true it loads that application into the RAM during the boot time persistent in the means this application should be reside inside the RAM always so if any developer can put this kind of in code in his application such kind of applications will always reside in the RAM so even though you are interacting or does not interacting with those applications such kind of applications are always reside in the RAM and one more is Android provides one feature for us we can start our application immediately when the boot was completed if any user uses this facility and he wants to start his application immediately when the booting was over such kind of applications also loaded into the RAM and like that there are some so some rules are there so activity managers simply check for this kind of applications if there any applications they are loaded into the RAM I want to say that this activity manager simply loads the applications based upon the some static rules it never checks whether these applications are user is interacting or these kind of applications are user frequently interacting it never checks so I want to say that we can improve that is its functionality such that we have to keep the empty application only the user frequently interacting and we can remove the applications when we can remove the application which are not interacted by the user like the application that I have showed in the previous snapshots so we can provide this facility simply like that we can maintain the log history of the user with what kind of application he is interacting and so we can identify some we can preload them into the RAM immediately when the booting was over one of the advantage of this preloading is we are loading the applications which are interesting to the user before he wants to interact so such that we can avoid the loading time when he wants to interact such kind of application I had showed you what do you mean load time in the first slides so if you load the applications which are interested to the user before he interacts so we can avoid load time such that we can improve some little bit speed of the phone and one more is if you increase the priority of the applications which is user interacting frequently such that we can skip such kind of applications from killing in low-memory scenarios so we can improve the functionality of this activity manager service such that identify his interesting applications and reload them and increase the priorities such that we can skip such applications killing in the low-memory scenarios yeah now coming to the low-memory killer still now you have I had given details on activity manager service and now I am going to give details on low-memory killer which is reside in the kernel layer of the Android and its functionality is to simply kill the applications in low-memory scenarios I will explain how it works right now and all these values I took from this Akash tablet with RAM size 512 mv I hope all of you remembered Android classifies process into different groups and these are the priority values for each group lesser the priority means higher the higher higher highest its priority that means foreground has the highest priority and empty has the least priority yeah now I will explain how it works if the free memory in the RAM is less than 10 mb then kill applications which are belongs to empty group and whose priority value is greater than or equal to 15 and remember one thing the apps belongs to this group and whose priority value is less than 15 they will not be killed okay have you I hope on you understood this like that the free memory is less than 8 mb and the pro applications which are belongs to this group and whose priority value is greater than or equal to 9 they will be killed so like that it follows all the way so but some of the advantages and disadvantages through this killer I will tell in the next slides but observe this thresholds mean free thresholds that means these are very Android never the tablet which have this values it will never kill applications it will never kill any empty application still the free memory is less than 10 mb for example let us take a scenario when if the free memory is nearly around 10 to 12 to 15 mb then this time you are going to select some of the application some bigger publication which is not there in the RAM let us example certain temple runner anything it will nearly consumes 25 mb that temple run game so this time this kernel has to kill the applications and load that app from the SD card into the RAM and it has to start so it takes long time to kill applications and load so based upon this thresholds we can decide that means how many applications we have to kill and how aggressively we can kill and how many empty applications we can keep so maintaining some default thresholds which will provide kill only some limited number of applications and do not kill aggressively such that you have to tune such a manner we should not improve increase the lagging time and we should not kill too many applications yeah now coming to the some of the advantages and disadvantages of the low memory low mean free threshold low mean free that means these thresholds if they are low what are the advantages and disadvantages the main advantage is if you have these thresholds very low we can have so many empty applications reside in the RAM so such that the response time for accessing the such applications is very less and one more is and but the disadvantages is the apps which are not reside inside the RAM if the user wants to load them such then such times we have to kill some applications and load them it is a few that means it is good for the application which are reside in the RAM and it is bad for the application which are not there in the RAM so such that we have to keep these thresholds in a manner we have in a manner such that we can keep the applications which are interacted to the interested to the user and this is the same opposite to the what are the disadvantages if you have the high mean free threshold same will come like opposition to this and now coming to the some of the problems in the low memory killer the main most of the Android users complaining that the default mean free thresholds they are getting they are not getting any good performance at that time they are having some slow in their phones they change their values they are getting some good speed in their phone so such that we have to tune the system such that it can identify the default values in such a manner for giving good performance and also this static mean free thresholds keeping same threshold all the times is may not be good we have to this is the some theoretical assumption and if you do some practical work and we can prove it may be useful yeah this is one more ongoing project compressed catch this is nothing but our Android does not have any strap space so the reason is that is the limitation of flash memory I am not giving all the details but this project concentration on implementing the swap space inside the RAM that means or whenever the user it wants to swap a press page it simply compress that page and swap that page into the this swap space and whenever it wants to access that page and decompress and load so like that this process this project go and if anyone have any wants to more details on this project you can contact later and so finally I want to say something we have to keep and manage our RAM in such a manner such that we have to keep the applications which are interesting to the user only and we can we can skip the some of the applications like applications which are applicable for making phone calls and the application which is never interacted by the user if you keep such kind of applications we are uselessly putting them in the RAM if you remove those applications and make free the RAM and we can use the same RAM for other applications also so such that we can decrease the load time and we can improve the speed of the phone these are the references thank you


Welcome to week two of Armchair Quarterback presented by Jimmy John's Gourmet Sandwiches. Armchair Quarterback is a weekly high school and college football show spotlighting local high school and college football in the mountains. Tonight we'll have a complete recap of last week's high school football from around the region. Top individual performances and there were some great ones. Fantastic finishes that you do not want to miss and will have first in history and first in a long time. This edition of Armchair Quarterback will include highlights from Eastridge and Phelps, Belferin Huntington, Pike Central and Valley, LCA and Pikeville all in bowl action and a Hail Mary win from Mingo Central. Johnson Central versus Capital West Virginia, Floyd Central's first home game and Lawrence County at Prestonsburg. We've got a lot to get to. Here are a few notes from week two. From the football notebook, a few quick notes from week two. Belfrey loses for the first time in Pike County Bowl since 2005. Big but back down to earth. Over 60 points. One score in the bluegrass top 60. Hancock County over Webster County, 68-nothing. Scores week one over 60, there were seven. So scores normalized somewhat. Who says no one plays defense anymore? There were 14 shutouts in the Commonwealth and two West Virginia double A contenders meet in week one and it ends with a last second touchdown. First home win in school history, Floyd Central first win in 17 tries. The Phelps Hornets. And each week we spotlight some top performers around the area. There were some tremendous individual efforts in week two. The top six performers around the area. From the defensive side, Pike Central's Logan Dotson had 15 tackles. Belfrey's Derek Wellman 108 yards rushing two touchdowns and 11 tackles. Phelps defensive back Brandon Turnmark, four interceptions. That's a record. Jacob's of not Central ran for 212 yards and three scores. Johnson Central's Blake Gamble had 156 all-purpose yards and three scores. Pike Central quarterback Seth Kahn, a huge night, 171 yards, three touchdowns rushing, nine tackles and a pick six. Those are some big numbers in each deserving of a special shout out. We have eight sets of highlights to bring you tonight with scores. There are some other scores from other games around the region. On the high school football scoreboard, Hazard 17-6 over Harlan County. Not Central defeated Sheldon Clark, 34-0. Luke Jacobs with that huge game in that one. It was Lawrence County, 55-14 over McGuffin County. Noah West, four rushing touchdowns, 135 yards. Paintsville blanked Harlan, 37-0 while Twin Valley, Virginia defeated Jenkins, 54-0. The Wayne pioneers knocked off Tulsa, 32-6. It was Bell County, 28-7 winners over Letcher's Central. Dudley Hilton is back at Bell County and the Bobcats are 2-0. Let's get this night rolling. We've got game highlights. First, the Jaguars of Floyd Central looking to add another first to the history books. First home football game, looking for their first home win in front of a packed house. On the five-yard line, Dylan Cottle and the shotgun, it will take it on a quarterback keeper straight up the middle into the end zone for the touchdown. Again, the Jaguars in the red zone looking to score. Dalton Boyd takes the handoff, finds a hole and adds to the first quarter lead. Still in the first from midfield, Cottle drops back, rolls down and fires deep downfield. Caleb Hager is all alone and walks into the end zone. The Jaguars spend a lot of time in the red zone. Kobe Sloan comes in motion, takes the handoff, follows blockers into the end zone for another Jaguar touchdown. Looking to cap off a long drive, Preston Crace takes the handoff, makes a few defenders miss and he'll end the drive with a trip to the end zone. Floyd Central, 43, Betsy Lane, nothing. Seven different Jaguars scored. Next up, East Carter is at Betsy Lane. And on Thursday, Floyd Central is at Brethit County on Friday. Stay tuned. Coming up, highlights from Belfrey, Pikeville, Johnson Central, Preston'sburg and the Community Trust Bank, WYMT, Pike County Bowl. A Hail Mary finish, this week's Super 7 rankings, the revamp schedule and a whole lot more. It's Armchair Quarterback presented by Jimmy John's Gourmet Sandwiches, Ikeville Commons. I'm Jimmy and this has been my definition of fresh since 1983. The good folks at Howard Family Pharmacy grew up right here in Eastern Kentucky. They know this town just as well as they know their customers. You want to be greeted by a friend and a pharmacist you know and trust. Come see Wes Howard, Tiffany Jacobs and Lauren Mullins at Howard Family Pharmacy. Located at Eastern, near Allen Central High School, call or visit howardfamilyfarmacy.com. Most insurance plans are accepted, laid hours and open on Saturday too. Howard Family Pharmacy. If you're looking for a fun, safe, friendly atmosphere to achieve your fitness goals, be sure to check out Heavenly Strong, a Christian fitness group that supports your physical and spiritual journey to wellness. Call<PHONE_NUMBER> for more information. No matter where you are on your journey to physical and spiritual wellness, Heavenly Strong is here for you. It's the high school football game of the week presented by Paul Howard Jr., Attorney at Law and the Golden Corral Restaurant in Pikeville. This week, the Hornets of Bogoff and County travel to take on the East Ridge Warriors. The game of the week airs Saturday at 7 and Sunday at 4 and 8.30, only on EKB-TV. Welcome back, it's Armchair Quarterback presented by Jimmy John's Gourmet Sandwiches in the Pikeville Commons. And did you know they deliver? Let's get right back to last week's highlights. The Phelps Hornets facing the East Ridge Warriors in both teams opener. The streak had lasted 16 consecutive bulls for the Phelps Hornets, 16 times the Hornets that played in the Community Trust Bank, WYMT, Pike County Bowl, 16 times a loss. The streak went in there last Friday night. The Hornets scored the first points of the game inside the Red Zone quarterback Garrett Clevinger found Seth Mayhorn all alone in the end zone. On the defensive side of the ball, Brandon Turnmire was everywhere. This interception, followed by a long return, was the first of his four picks in the game. On the goal line, Phelps looking to punch it in on fourth down, but a fumbled snap and a recovery forces the turnover on downs. Clevinger then in the shotgun takes a snap, can't find anyone, so he touch and runs. There's Clevinger with a big game and the first down. The Hornets again looking to score. In the Red Zone, Peyton Rive takes the handoff. He'll break a tackle there, changes direction, and then outruns the defense to the corner of the end zone for another Phelps touchdown. Clevinger in the shotgun once again. He'll fire down the sideline. Kendrick Prater goes up between two defenders, comes down with a big time grab. A few plays later, Clevinger will be under center on the goal line. Takes a snap, pushes the pile, and that's a Phelps touchdown to add to the lead. Phelps wins it 32-8 over Eastridge. Brandon Turnmire had four interceptions. Next up, Phelps will be at Sheldon Clark Thursday. MacGuffin County at Eastridge Thursday night as well. The defending Kentucky 4A state champions were hosting capital out of West Virginia in one of the top matchups of the week. A full house in the stands in anticipation of this big matchup. Riley Priest under center, gives the ball off to Joe Jackson. He shakes off a couple of tacklers, gets into open field and picks up the first down and more on a big game. Priest back under center, he'll drop back this time, finds a man deep and Seth Dalton will haul it in. He burns his man, gets tackled into the end zone. Touchdown, golden eagle. Capital now with the ball, running back, takes the gift. He finds the hole and gets the first down on a big run. Johnson central will get the ball back, near midfield. Priest drops back, but gets flushed out. He tucks it, gets to the sideline to pick up another first down and move to change. Central on the goal line now, Blake Gamble gets the delay in handoff. He'll punch it in for one of his three touchdowns on the day. The golden eagles played well on both sides of the ball. Devin Johnson gets into the backfield here, blows up the play for a big stop and a turnover on downs. The eagles of Johnson central coming back in offense. Priest rolls out, finds Gamble all alone. He makes the catch, works his way out of bounds. But a late hit will add 15 to the end of the play. Johnson central defeats capital 31-20 in both season opener. For Johnson central, Blake Gamble had 156 all purpose yards, three touchdowns. Next up, Johnson central is Henry Clay. That game will be played Thursday evening, just been changed. In a battle of Pike County rivals, Pike Central facing Shelby Valley. Many expected a great game of smash mouth, run it right at you football, and that proved true. Teams combined for just two pass attempts. The two teams meet at midfield to get things started as the captains greet one another. The Saturday edition of the Pike County Bowl, Pike Central hits stride right out of the gate, first place in scrimmage. That's Seth Kahn. He'll make Wildcat defenders miss and then it's off to the races. Nobody will catch Kahn. He scores the first points of the game and gives the Hawks the lead. Kahn does it all night for the Hawks. Early in this one, he takes the ball around the end for another big game. Hello cheerleaders. That play sets up this run by Kahn. He gets a few blocks and down the sideline for six more. As the Hawks fans, they love their team. Lots of orange and blue in the house. Pike Central wins it 36-6. For Pike Central, Seth Kahn finished with 164 yards and two touchdowns. Seth Johnson had 104 yards rushing for Shelby Valley. Next up, Bell County is at Pike Central Thursday evening. Ridgeview, Virginia at Shelby Valley on Thursday. And the Pikeville Panthers were coming off a season-opening win this week's matchup against a much more experienced Lexington Christian team. LCA in Pikeville territory, Logan Neves takes the snap and hands off the waydrake to get the inside the 15 yard line. Then Neves takes the snap, rolls to his right. He'll fire the ball to Blaine Harden gets the Eagles inside the five. The Eagles now threatening to score. Neves fakes the handoff and he'll walk into the end zone untouched. Pikeville looking to answer Peyton Boyd Blair will look downfield. He'll find Jackson Hensley open over the middle and it's a race to the end zone that Hensley will win. Touchdown Panthers. Pikeville on the board, Logan Neves in the shotgun for LCA. He'll scan the field, finds Dylan Wheatley wide open. And the big man rumbles downfield for a first down and more. Wheatley did it all night long. Again, Neves will drop back. He'll look over the defense, steps out of the pocket and dumps it off to the big man Wheatley. He'll add to the big game that he had. We talked with Coach Chris McNamee about the loss and Pikeville's progress after the 49-21 defeat. We're going to have, we're just going to go, we're going to go off five days this week and next week we'll get back on a regular schedule. Well, we have pains for the next Friday, so we know we have a tough task in going down there and playing them. But then you look down the road and you have Belfry and Hazard right behind those two. So we've got to take advantage of this week, heal some guys up that might be a little dinged up, continue to try to get in better shape and just work on fundamentals is all we can do really. That's the thing I really like about our team right now is that they work hard. We don't have any superstars on the team, everybody's just wanting to step up and do their job to the best of their ability and I think that'll go a long way for us. Lexington Christian gets the win to improve to 2-0, 49-21 over the Panthers who fall to 1-1. For LCA, Dustin Wheatley had 171 yards and three touchdowns. Pikeville is open this week. Stay tuned. Coming up, we'll have highlights from Preston's Burg, a Hail Mary finish. This week's Super 7 rankings, the revamped schedule and a whole lot more. It's armchair quarterback presented by Jimmy John's Gourmet Sandwiches, Pikeville College. I'm Jimmy and this has been my definition of fresh since 1983. If you're looking for a fun, safe, friendly atmosphere to achieve your fitness goals, be sure to check out Heavenly Strong, a Christian fitness group that supports your physical and spiritual journey to wellness. Call<PHONE_NUMBER> for more information. No matter where you are on your journey to physical and spiritual wellness, Heavenly Strong is here for you. The good folks at Howard Family Pharmacy grew up right here in Eastern Kentucky. They know this town just as well as they know their customers. You want to be greeted by a friend and a pharmacist you know and trust. Eastern Kentucky, beautiful, green, peaceful, friendly, but there's a darker side to these mountains. When crime is committed, sometimes cases go unsolved. Occasionally the perpetrators even get away with murder. On our latest news segment, The Scene of the Crime, I'll be working with local law enforcement to help find justice for victims and their families. The Scene of the Crime, Fridays during the EKB news at 6 and 10 starting August 25th. Welcome back to Armchair Quarterback presented by Jimmy John's Gourmet Sandwiches and the Pikeville Commons. We continue our look back at last week's high school football. We take you to Belfry's Cam Stadium where the pirates were hosting the Highlanders of Huntington High. It was a full house at Cam Stadium as the pirates take the field for the final game of Friday night at the 2017 Pike County Bowl. Pirates struck early in this one from five yards out. Kevin Brownie with the keeper and barrels his way into the end zone to take the early lead. Belfry looking to drive and extend the lead to Avion Hunter. Will take the pitch, makes a move, finds the opening hole and no one will catch him. He takes it all the way for a 70 yard touchdown. But the Highlanders wouldn't be outdone. From 10 yards out, JV Hayes takes the ball right up the middle. The lead from the pirates, the defense pushes the ball into the end zone for the Huntington touchdown. The pirate defense was top notch in the first half. JV Hayes takes the pitch, looks for room around the end. But a host of pirates shut down the rushing attempt. Belfry back on offense and the gives goes to full back Derek Weldon. The big guy picks up big yard and is carrying defenders on his back. Thought he had a touchdown but stepped out of bounds for a 10 yard game. But the pirates take the loss at home. Huntington High 45, Belfry 34. First Belfry home loss since 2013. Belfry will be at Bryan Station Friday night, a game you'll hear on 93.1 WDHR. And the Prestonsburg Black Cats hosted the Jaguars of North Laurel at Josh Francis Field. Black Cats quarterback Drake Nunnery in the shotgun. He gives the ball off to Heath and Barney. Takes it up the middle for a hard fought 15 yard game. North Laurel now with the football, Cole McWhorter with the give to Jose Rodriguez. He goes right up the middle for the easy touchdown. Now North Laurel looking to score again. Matt Sizemore takes the ball, powers straight up the middle for another. Jag's touchdown, he follows with the two point conversion. Black Cats looking to get things going on the ground. Ryan Sloan takes back to back hand off to the can't find any running lane.  North Laurel wins it 28-6 to improve to 2-0. Prestonsburg falls to 0-1. Jose Rodriguez for North Laurel had 119 yards rushing two touchdowns. Next up, Lawrence County is at Prestonsburg Friday night. You'll hear it on ESPN East Kentucky 95.9 and 104.5 FM. And ladies and gentlemen, you're going to love this one. Everyone loves a good Hail Mary, right? Well, Mingo Central, the defending West Virginia double A state champion at Point Pleasant who hadn't lost at home in 43 games. Mingo Central with the ball down by four. 6.7 seconds remaining ball at the 31 yard line. One last play. Miners quarterback Jeremy Dillon in the shotgun. To his left sets his feet, slings it for the end zone touchdown minors. The place goes crazy. Mingo Central wins it on that last second play. Dillon to Dawson Eli with no time on the clock. That one, good enough to see again. Here's the replay. There's Dillon. West Virginia's double A player of the year. Last year he slings it. That's like Aaron Rodgers back to the end zone. Miners win it and they go to 1-0 with a 36-34 win over Point Pleasant. Jeremy Dillon, 224 yards passing, four touchdowns. Next up, the Wayne Pioneers are at Mingo Central Friday night. Stay tuned.  This week Super 7, the revamped schedule and a preview of the college football weekend which starts tonight. This armchair quarterback presented by Jimmy John's Gourmet Sandwiches, I drill comments. I'm Jimmy and this has been my definition of fresh since 1983. Appalachian Wireless and the stations of East Kentucky Broadcasting present the long hot summer of cold hard cash. And while summer is indeed winding down, you still have plenty of opportunity to win big. Register at your local Appalachian Wireless location every week. You'll give away $500 in cold hard cash every Friday till Labor Day. The more you enter, the more chances you have to win. No purchase necessary. All entries stay eligible for the $3,000 grand prize to be given away Friday, September 1st. You can also like and share our cold hard cash post on Facebook for a chance at the grand prize. You may be just as lucky as last week's winner. My name's Ollie Rowe. I'm from Mealy, Kentucky and I just won $500 from Appalachian Wireless. The long hot summer of cold hard cash. Exclusively on the stations of East Kentucky Broadcasting and Appalachian Wireless. And this has been my definition of fresh since 1983. Welcome back to Armchair Quarterback presented by Jimmy John's Gourmet Sandwiches in the Pikeville Commons. Thursday. We've got to look at the high school football schedule. Bell County is at Pike Central at 7 p.m. Hurricane West Virginia is at Paceville at 7. East Carter at Betsy Lane 7 p.m. start. Fyle Phelps travels to Sheldon Clark at 7.30. McGuffin County at East Ridge at 7.30 kickoff. And Ridgeview, Virginia at Shelby Valley at 7.30. Those are all Thursday games, games that have been changed from Friday to Thursday. On the Friday schedule. Self-free will be at Bryan Station. Nod Central goes to Perry Central. Letcher Central travels to Hazard. Lawrence County is at Prestonsburg. And Johnson Central at Henry Clay while Floyd Central travels to Brethit County. One game moved from Friday night to Saturday afternoon. Morgan County at Jenkins a 2 p.m. kickoff. And with two weeks complete in the high school football season there's very little shake up in the sports guys Super 7 rankings. The Super 7 is unique in that it includes teams regardless of class or state line. Simply the top seven teams power rankings in our coverage area. This week's rankings include teams from Single-A, Triple-A, and Four-A in Kentucky and Double-A in West Virginia. Four teams that have won championships in the last two years. The sports guys Super 7 rankings for the week at number seven. Pike Central. Pikeville 6. Paintsville at number five. Hazard at number four. Attaya at number two. Mingo Central and Belfrey. And the Johnson Central Golden Eagles the number one team in the sports guys Super 7. Last week the University of Pikeville Bears fell to Campbellsville on the road in their season opener 28-14. U-Pike is on the road again tonight at NCAA Division II Carson Newman University. We caught up with head coach Al Holland Jr. for a scouting report on Carson Newman. You're going to have a big physical football team that's going to try to run the football at right at us and defensively they're going to get after us. They're going to be big and physical up front. We got to be heady at quarterback and giving us in the right plays offensively and defensively we just got to be smart and play our assignment and play assignment football and if we do that I feel like we got a shot to have an opportunity to get a win. I've been very proud of our guys. You know Saturday was their off day and had guys in the facility throwing the ball around and getting extra work individual work so you know they're hungry to get back after it and you know proud of the leaders on this football team we've got a great week of practice. Campbellsville 28-14 last week U-Pike at Carson Newman this evening a 7 p.m. kickoff in Jefferson City coverage at 645 on Z107-5. With U-Pike kicking off the college football weekend it's the first full weekend for area favorites as well as major college. U-K is at Southern Miss Saturday it's 4 p.m. kick coverage at 2 p.m. on WDHR Miami Ohio at Marshall Saturday at 6 30 coverage at 5 30 on ESPN radio the Louisville Cardinals will be facing the Purdue Boilermakers in Indianapolis Sunday at 7 30 and a couple more local favorites WVU and Virginia Tech FedEx filled in Landover Maryland Sunday at 7 30. Wow week two is in the books and week three is upon us already with the schedule changes week three of the Kentucky season begins tonight and it's the first full weekend of the college football season. We look forward to a great weekend of football and bringing you the recap next week on armchair quarterback. It's presented by Jimmy John's Gourmet Sandwiches in the Pikeville Commons. Thanks for tuning in.


We have been introduced to perturbation theory and we have discussed why I think this cat represents perturbation theory nicely. Today we will complete our discussion we will get an expression for the delta E the first order correction to energy and we will do a very very simple example of an application of perturbation theory. Then for the next few modules we are going to talk about applications in progressively more chemical chemistry dated systems. But before we do that let us quickly recap what we have discussed already we have said that the scope of perturbation theory is that it works when the deviation from the unperturbed system is very very small. We can write the Hamiltonian of the perturbed system as 0th order Hamiltonian plus a first order correction we can write the wave function as 0th order wave function plus first order correction delta C we can write E as 0th order energy plus first order correction to energy delta E. Before going further it may make sense to say that this expression is of course incomplete. I might want to do I might want to invoke a second order third order perturbations sometimes it might be necessary. In the next module we are going to discuss a case where first order perturbation with a certain kind of expression of a quantity just does not work you either have to change that quantity or you have to invoke second order perturbation. So it is not necessary that first order correction is be all and end all of it but for most of our purposes we are going to stick to first order correction. Then what we did is we set up Schrodinger equation in terms of H hat psi and E this is what it is and since delta psi and delta E are small changes we figured that this H1 hat the first order correction to Hamiltonian operating on delta psi and delta E multiplied by delta psi remember it is an operator so it cannot be multiplied by delta psi it is operating on delta psi. So these two are products of small quantities so they are 0. We also said that H0 operating on psi 0 is the same as E0 multiplied by psi 0 because that is your Schrodinger equation for the unperturbed system. So they cancel each other we are left with H0 minus E0 operating on delta psi plus first order correction to Hamiltonian operating on psi 0 is equal to delta E multiplied by the unperturbed wave function. Here we said that let us not forget that this unperturbed energy subtracted from the unperturbed Hamiltonian is in itself an operator in this case it is operating on delta psi. The problem with that is that we do not know what happens when it operates on delta psi we perfectly know what happens when it operates on 0th order wave function. Because H0 is equal to E0 multiplied by psi 0 so H0 minus E0 operating on psi 0 is equal to 0. So somehow we can replace delta psi by psi 0 then we know how to go about this. That is what we are essentially trying to do. So to do that first of all we will multiply by psi 0th star and integrate over all space this is the expression we get on the right hand side we get delta E multiplied by the integral of the 0th order wave function unperturbed wave function and its complex conjugate this integral of course is equal to 1. So right hand side gets cleaned up we get only delta E and the left hand side we are now trying to find out what would be this expression here. And to do that this is where we have got so far we have remembered that quantum mechanical operators must necessarily have real eigenvalues because the one of the central themes of quantum mechanics is that the eigenvalues of quantum mechanical operators are the values of the observables these operators stand for. So you cannot have a physical observable with an imaginary value if I if you ask me what is the position and I say the position is root 5 into i what does that mean it means it is not in real space. So that cannot be the case if I ask what is the momentum and you say 0.32 multiplied by omega or 0.32 minus 5.6 i what kind of momentum is that momentum position these have to be real quantities.  So what we are seeing is what we are trying to do is we are trying to interchange the bases here at least we have been able to interchange this complex conjugate and a function by itself. Left multiplication here is by complex conjugate left multiplication here is by the actual function but our job is not done because here the 2 functions are different is something like integral f star a hat g d tau here we have integral f star a hat f d tau. So we have to somehow bring in a g here then we know what this is going to be and that is what we proceed to do from here. So since we need a g let us simply write this same expression in terms of g without any loss of generality and talking about a function how does it matter if you call it f or if you call it g or if you call it phi or whatever you want to call it arose called by any other name smells just as sweet. So we write this but then there is a reason why we have written it it is not just we have we want to bring in a different function here and to do that what we do is we take a linear combination of f and g and we take psi is equal to c 1 multiplied by f plus c 2 multiplied by g why because we want an integral f star a hat g d tau this linear combination will enable us to do exactly that we are going to jump steps there because it is lengthy if you want you can do it yourself you will not have to remember anything as long as we understand the logic we are good. So now see this f is any general function right. So instead of f I might as well write psi so I can write integral psi star a hat psi d tau alright let me write what happens when I take psi and put it here in this equation I get integral psi star a hat psi d tau is equal to integral psi a hat psi we take complex conjugate of the whole thing d tau it is a simple as that but what is psi psi is a linear combination of f and g yeah.    So we are getting to the functional form that we require but before we get there it is important to now develop an understanding of the situation and that is where we are going to embark upon or where we are going to reach a very important property of quantum mechanical operators let us see. See first of all this left hand side here is the complex conjugate of the right hand side is not it?  So right hand side and left hand side are complex conjugates of each other point number 1. Point number 2 is well it is an equation so of course LHS equal to RHS so what are we saying here we are saying that LHS and RHS are complex conjugates of themselves that is going to happen only when LHS and RHS are real otherwise it is impossible. Something similar also comes when you talk about what are called Hermitian matrices matrix algebra. So LHS and RHS have to be real it is as simple as that. Now see the c 1 star c 1 and c 2 they are perfectly arbitrary constants I have not told you that this is 5 and this is 3i or other way around or anything. So naturally since these are arbitrary complex quantities we should expect that c 1 star c 2 in the general case is going to be complex because we are multiplying two complex numbers either c 1 star and c 2 both have to be real or c 2 has to be the complex conjugate of c 1 star then only this c 1 star c 2 c 1 c 2 star these are going to be real but that is not the case that would be a very very specific case we are we have written a general expression. So these are arbitrary complex quantities these are complex quantities. So what about the rest remember left hand side let us work with the left hand side first left hand side is real left hand side is made up of two factors the first one is c 1 star c 2 second one is this f star integral the second one is the integral. Similarly right hand side is c 1 c 2 star multiplied by another integral now each is real in the left hand side focusing there c 1 star c 2 we said in the general case has to be complex which means that the integral either has to be its complex conjugate because the product of the integral and c 1 star c 2 is real. So either the integral has to be complex conjugate of c 1 star c 2 but if that is the case once again generality is lost that is a specific case we do not want to talk about specific cases we want to see if there is something that is absolutely general similarly on the right hand side also the same thing will happen. So what is the only other situation in which we have a complex number multiplied by a quantity and the product is real unless the second quantity is a complex conjugate of the complex number the only other option you have is that the second quantity is 0 anything multiplied by 0 is 0 why it is not 0 1 by 0 anything real or imaginary does not matter multiplied by 0 you are going to get 0. So the general solution is that these integrals on the 2 sides must be equal to 0 integral f star a hat g minus g a hat star f star d tau must be equal to 0 similarly integral f multiplied by a hat star g star minus g star a hat f d tau is also equal to 0 well there are too many f's and g's and stars here please do not get scared please do not get confused stop the video here if you have not understood replay replay as many times as you need and it will sink in it will sink in faster if you do it by yourself so this is something that we are saying in almost every module please make sure that in addition to hearing what I am saying you write down the same thing so that you practice okay so this is 0 so let us clean up things a little bit and before doing that this is actually the definition of Hermitian operators okay an operator that satisfies this condition that this integral is 0 is called a Hermitian operator and Hermitian operators as we see have real eigenvalues this is the definition do not say that Hermitian operators definition is that they have real eigenvalues that is a coronary this is the really the definition we have sort of back calculated starting from real eigen functions we have shown that the operator has to be Hermitian this integral has to be equal to 0 okay so let us clean up things now and write this integral f star a hat g minus g multiplied by a hat star f star d tau equal to 0 okay so what we can do is we can expand the left hand side and get two terms and since one has minus sign we can take it to the right hand side that way we get integral f star a hat g d tau is equal to g multiplied by a hat star f star d tau and that is a happy situation why because look at this psi 0 star let us say that is f h 0 h 0 minus e 0 that is your let us say a hat and this is g the problem we have here is that g that is delta psi is not an eigenfunction of h 0 minus e 0th but psi 0 is an eigenfunction so if we can somehow take this delta 0 here and bring this psi 0 here then that is a happy situation I mean it is okay if you bring psi 0 star also but that will not happen okay and this equation is what allows me to do that I have an operator operating on a function left multiplied by another function what it says is that within the integral sign you can just interchange the two functions right instead of f star now f star will come here g will go there so this is what we get so using this expression we get delta psi star multiplied by h 0th minus e 0 h 0 complex is okay e 0th complex is complex h 0th complex does not make a difference so h 0th minus e 0th operating on psi 0 theta so this expression here gets transformed this integral here gets transformed to another integral where we have this problematic delta psi star factor multiplying an operator operating on its wave function on its eigenfunction now tell me what is the eigenvalue of this h 0th minus e 0th operator for psi 0th I can find eigenvalue and I can do it fairly easily remember Schrodinger equation for the unperturbed system unperturbed Hamiltonian operating on unperturbed wave function gives us energy of the unperturbed system multiplied by unperturbed wave function okay so let us bring this to the left hand side we get h hat 0th psi 0th minus e 0th psi 0th equal to 0 or we get I can write like this h hat 0th minus e 0th that is the operator we are working with operating on psi 0th is equal to 0 okay so first thing we have done is we have transformed this integral to another one in which we have h 0th minus e 0th operating on psi 0th and we have found that this h 0th minus e 0th operating on psi 0th is 0 so inside the integral we have delta psi 0th multiplied by 0 integrated over all space what will it be definitely it is going to be 0 okay so now after all this exercise we are happy to see that even this problematic term is actually 0 you do not have to worry about it so finally we get an expression for the first order correction to energy and that expression is delta e equals integral unperturbed wave function multiplied by the first order correction term to Hamiltonian operating on the unperturbed wave function itself integrated over all space okay another way of writing it indirect notation that is often done as we have discussed a little bit is we can write this same thing as psi 0th h hat h hat psi 0th integrated over all space this is your delta e I think we are now familiar with this expression there should be no problem so we have got an expression for the first order correction to energy now to conclude our discussion let us think of applications of this simple perturbation theory in some systems now before that this further records this is called time independent perturbation theory because we are working with time independent wave functions we are not working with time dependent wave functions time dependent because we are working with stationary states here right when we work with when we talk about spectroscopy at that time it will be imperative that we use time dependent perturbation theory but if you understand time independent perturbation theory time dependent perturbation theory is actually child's play not difficult at all so we are going to see its application today we are going to talk about this kind of a system a particle in a box with a slanting bottom and in the next module we are going to discuss what is called an an harmonic oscillator and that is where we will see what kind of problems we face if we do not define our perturbation properly or if we try to stop at too low level of correction so let us start so what we are doing is we want to talk about particle in a box with a slanting bottom which means a particle in a box with an x dependent potential okay so to start with what will be the unperturbed system our good old particle in a box where v equal to 0 for all values of x v equal well all values of x within 0 and a where 0 and a are the limits of the box and outside it is infinity so for such a system for a particle in a box with infinite height of the walls the wave function as we have discussed is root over 2 by a sin n pi x divided by a and energy is n square h square divided by 8 m a square simple now we want to bring in the perturbation to the system to arrive at our box with a slanting bottom so this is the perturbation we bring okay so let us say at x equal to a the perturbation potential is v remember what we are trying to do is we are trying to get an expression for the first order correction to the energy brought in by this slanting bottom to do that we will need to know what the first order correction to Hamiltonian is first order correction to Hamiltonian will be of course the potential energy what is the potential energy it is equal to 0 for x equal to 0 it is equal to capital V let us say for x equal to a so what you have here is a straight line going through the origin so very simple right h first order for any value of x is going to be x divided by a multiplied by v it is quite simple not difficult at all okay x divided by a multiplied by v v is the value at a so we take this expression for the first order correction to Hamiltonian and we plug it into the expression for delta e this is what we get and of course we have to use the expression for psi 0th as well so delta e turns out to be integral 0 to a psi 0th star which is the same as psi 0th because psi 0th is real wave function multiplied by x into v divided by a multiplied by psi 0th integrated over all values of x from 0 to a simple as that now here this v is a constant is not it a is also a constant so v and a can come outside the integral and what do we get here psi 0th is root over 2 by a sin n pi x by a and there are 2 of them so I get 2 by a from there as well so what comes outside the integral is 2 by a multiplied by v by a something like that so 2 v divided by a square that comes out inside your left with integral 0 to a x into sin square n pi x by a dx of course you can work this out yourself it is an integration not a very difficult one but it is a standard integral we know the solutions already we are going to just put the value from the compendium the value of the standard integral turns out to be a square by 4 so the value for delta e that we have is 2 v divided by a square multiplied by a square by 4 that turns out to be v by 2 so you see how simply how easily we have been able to find out the value for the first order correction to energy of the system even without working out what the wave function actually is this is the beauty of approximation methods you do not have to know the wave function to get the energy you can get the energy first then worry about the wave function so let me just write this remember energy in particular in a box is quantized we said earlier that e 0th order energy for nth level is n square h square by 8 m square now in the perturbed system you need this correction term of v by 2 so this is the expression for the energy of the nth energy level en is equal to n square h square by 8 m square plus v by 2 so what has happened to the energy level of particle in a box because of this slanting thing what has happened is that every energy level has simply got offset by v by 2 what is v v is the perturbation potential at x equal to a so this energy here is not x dependent potential energy is x dependent fine energy is not it would have been a little unhappy situation if it was okay but it is not so it is a good thing that we see that n square h square by 8 m square plus v by 2 this is what we get now see v would better be small right and you can think of very large values of v what about n square h square by 8 m square we have talked about what kind of energies they can be if v is very large then of course this treatment is not even valid yeah because that delta e into delta psi that you cannot equate to 0 anymore if delta is large so you have to work with these that are small enough if v itself is close to infinity of course the statement is not valid otherwise it is and we see an elegant and simple example of application of time independent perturbation theory to a simple model system next day next module you go on and discuss application of the same time independent perturbation theory to your anharmonic oscillator remember harmonic oscillator equi-space energy levels and so on and so forth we will discuss why it cannot really be the case for the diatomic molecules and it has to be a it has to look different so you have to bring in anharmonicity we are going to bring in anharmonicity as a perturbation and we will get a correction term to the energy while we do that we will come upon something interesting after anharmonic oscillator we want to see how one can use perturbation theory to talk about helium atom remember we were talking about helium atom two modules ago from there we have taken a sort of a break and we are learning perturbation theory only because we will can go back we have to go back to the same system and use it this is not a digression we are developing the tool so that we can use it in our atomic system please do not lose the focus of what we really want to do after this but to get there we must learn the workings of the theory and the best way of learning it is to make the theory work on model systems and while doing that we also get some interesting results that are relevant to molecules also right even this kind of a slanting box can be there in conjugated molecules in which all atoms are not carbon and anharmonic oscillators are ubiquitous in molecular vibrators so that is the reason why we are doing this but do not forget that all this is really a part of our discussion of many electron atoms to understand which we are going to use this perturbation theory.


In today's video we look at the Toastmasters air timer. The air timer is designed to keep your meetings on time. It's available for $97 for Toastmaster members and $110 for the general public. Is it worth the $100? Let's open the box and see what's inside. We have the device itself, a two-page operating manual and a note explaining how to install the batteries to operate this device. I've already installed the four AA batteries. To start this device, all I have to do is press and hold this button and the device is on. Press the home button to go to the main menu. We can press the up or down arrow to cycle through the different modes. One of the mode is called the demo or manual mode. To start this mode, all I have to do is press this key to pause, press it again, go back to the menu. The timer comes with 11 pre-program modes starting from zero to one minute, one to two minutes, two to three minutes and so on. For example, if we start the timer in mode C, which is two to three minutes, then the green light will appear at two minutes, the orange light will appear at two and a half minutes and the red light will appear at three minutes. Once the red light comes on, after 30 seconds, this light will start blinking, indicating overtime. The overtime indicator is not seen by the speaker. It is visible only to the timer. Once you're done, you can hit the home button. If you want to time a speech that is not available in the pre-programmed list, we can make use of the manual mode to achieve this. Of course, you will need a separate clock to keep track of the time. This device will be only used to show the light. The way it works is like this. Start your own timer and when it is time to show the green light, hit the play button. It will turn to green and immediately hit the pause. Similarly, when it is time to show the orange, hit the play button and then pause. When it is time to show the red, do the same and you can leave it like this. Press home when you're done. To switch off the device, scroll down till you find power off and hit the play button and the device is shut down. So that was a quick look at the Toastmasters air timer. Is it worth a hundred dollars? In this day and age, where everyone has a smartphone with timing apps, spending a hundred dollars just for a dedicated timer might seem too much. If you have Toastmaster gift vouchers that you want to redeem, this would make for an interesting gift for you or your club. It will certainly add a level of professionalism in your club meetings when it comes to timing.


3D in vitro models for studying organ physiology and disease lack fluid dynamics present in vivo, highlighting the importance of perfusion in current models, discussing their advantages and limitations, and focusing on future challenges and opportunities in fluid flow models applied to organoids and organonachip platforms. This article was authored by Yago Just-Lannis, Sylvia Hervas-Rauy, Jose Manuel Garcia-Osnar, and others.


Hey guys she better 1,000 here as you guys may or may not know I I like to break out my Old cameras every once in a while and use them So I thought I'd do a short vlog just to get one out and use it this one here that I'm using now Actually has Where is it actually has night shot on? So that's pretty cool Which works well Let me see what else oh Man, this is what I'm making for supper tonight some Chuck I state Now just put them in about ten minutes ago, so they're gonna be a while But what I did do was I did I did put them in a skillet here and I Seared them I got the skillet hot stuck them in there for about a minute on each side What that does is When you see them like it helps keeps it helps keep the juices in I'm gonna get you out of the way Helps keep the juices in a lot better. I didn't do it the other night when I made steaks on the on the fire And feel like it was necessary I do sometimes but usually my grills my grill is hot enough Then when I put it on there it sears it does pretty good. We're gonna have these baked potatoes.  There we go. She's gonna stay with us for a couple days. She spent the night last night Her blood or her her sugar level was like 560 or 530 way too high so she wanted to make sure she was okay, so She wanted to bring her out here.  She once she was at work She Dropped her off at her house so she can visit her aunt and uncle that are down from Canada So that's that's pretty cool. I can't wait to see them. I see them every year. They come down for a month or two We go to the beach and stuff So I just want to break out an old camera and you know do some shooting. This is just a quick vlog for you. Oh Yeah, I'm off work again till Monday now I Got set up. I need to go see a pulmonary specialist. They can't figure out why I can't breathe I Still got a cough. It was pneumonia. There was pneumonia in there Which in itself takes weeks and weeks to get rid of it was bronchial pneumonia. I Still got slight cough. I mean I feel okay. I'm a little tired and weak But so I've been trying to do some things Also What but what it is the main thing is my my oxygen level keeps dropping down too low So I can't do much with you know without being out of breath. So my you know my job I can't be doing that. She told me in the eye yesterday and said You can't go back to work. So and she said Maybe Monday if you feel up to it, but that's up to you But she wants me to call her and I guess she called today.  So Anyway, that's an update on that I'm supposed to be taking that there the puffer the inhaler 400 bucks. No, can't do it man. I can't I can't pay for that. That's just too much, you know, because I don't have insurance so Well, so anyway guys, that's just a little update on what's going on thought I would This is cute We woke him up So I thought I'd just give you a little update what's going on and I just break out a camera make a video for you guys So I'm gonna get off here and Go find something else to get into and try to make another video I don't know what I'm gonna film yet, but I'll find something. So this guy's thanks for watching man. Have a good one Have a good weekend coming up. So and I'll chat it you guys soon. She barely met the man alleged and I'm gone for now Bye-bye guys


Hi My name is boy and cross not from store pool And I'm here to tell you about high performance block story system that we're doing So we started doing store pool. We started store pool about three years ago exactly with the purpose of Solving brought block storage for service providers who are hosting a lot of virtual machines in their clouds so our approach to solving this is Distributed software defined storage Which you know the traditional approaches on the right side here in storage you have like a big storage box from EMC or Dell or HP someone like that You have a network which could be fiber-channel recent at and you have your compute nodes And the distributed storage approaches distributed software defined storage approaches you take standard servers You you put some clever software on them and make a number of these say ten of these servers behave like one big storage system So why why is now the the best time for? Switching your storage approach where there are a few market trends One of them is cost of interconnect has dropped so much So you can now get a 64 part 10 gigabit ethernet switch for about $4,000 Which is about say 50 euros 65 dollars per part And the other one is the other market trend is Multicore CPUs so the typical server hypervisor server today has 20 cores 256 gigabytes of RAM and Good software defined storage solution would take say one maybe two CPU cores out of that And we'll leave the other 18 cores for your virtual machines, right? So what do we do store for the other distributed block layer high performance storage system? Running on standard x86 servers and we deliver it as software and services So we we help you along in designing the best solution in figuring out all the details installing it upgrading it all of that The use cases hosting of virtual machines and containers on Linux for service providers and private clouds and people Our customers select store pool because of performance and efficiency. That's the the main reason they choose us and The problem is safe In this is that it's a very good and scalable object store, but it really fails at delivering a fast high-performance box storage And here a few We did a performance test on the same hardware store pool versus safe and here is the result So store pool this graph is CPU usage on the yx axis and IOPS on the x axis so store pool the store pool solutions are with the green and the blue line and service with the red line and With for a lot lower performance for something like 2000 IOPS safe Basically fills the CPU of the three storage nodes. So it really cannot do more Because the CPUs are full right So in this example, which is random rates only in these specific configurations store pool does About seven times as many IOPS with about six times Less CPU usage So that's the kind of difference about 50 times you can get between not so, you know optimized Solution and something like store pool and as an end result you get You know because you have a high-performance storage system, you can do things like run storage and compute on the same nodes and you do that by Allocating one maybe two CPU cores if you want really high performance For the storage system in the other 18 cores are left for for your virtual machines And this is a lot of advantages. So this kind of Propagate through through the whole stock and gives you a lot lower to see all Less servers less network parts less base in the data center a lot of advantages of doing it this way So what's the deal with store pool and open stock? Our customers our current customers use these custom hypervisor management systems and We store pool has kind of a custom integration with each of these custom management systems that our customers have and we see store pool sees an opportunity in open stock to have You know one integration with the most popular hypervisor management system And then everyone uses open stock with store pool or open stock with some other storage system So the things are that they exist today. There is a center driver There is a novel storage driver for attaching the touching volumes It works with ice ice house in Juneau and we are hoping to have it upstream in kilo in the next three days and we are also working on an Glance backend So that Creating a volume from an image would be instantaneous instead of having to copy the date over If you're familiar with That may be something for you So I want to show you today The store point open stock integration Store pool API and also some something on performance Okay No, not here All right, so this is your you know familiar open stock dashboard And in here we have A an instance that is actually using store pool So the way to Right, I think it's Sorry So the two volumes in the one is attached as VDB to that instance to that virtual machine That one is attached to VDC one volume is three gigabytes that one is one hundred gigabytes. These are Volumes which are stored in store pool This is a running instance, so Do you see that it's not large enough, okay, let me just fix that Should be large enough, right? This is the hypervisor of this instance is running on and this is the you know the Quemu KVM Process that that's actually this specific instance and you can see here that that instance is on store pool storage, this is all you know Provision through open stack you can Anything you do with you know, we support all the standard standard functions, so volume snapshots everything so you could This is a snapshot which is of this volume and if we want to we can create another snapshot of it just by going over there and Giving it a name so the snap snap to Create a snapshot Then we have Then we have another snapshot. Okay it's all So most of the operations are instantaneous So the you know creating a snapshot from volume volume some stuff not creating a snapshot extending the snapshot or touching the snapshot to a virtual machine That's all instantaneous So this is basically what you know the high-level overview of the integration with cinder there is Nothing, you know surprising there we hope like it should work as as a good cinder backend We have any questions on this should I move on to the next thing? Good so So the way the way it works one level deeper is that There's a store pool API and there's also a common line tool for it and Store pool CLI just makes an API call and gives you some information We've you know This is an example of you know what kind of information you can get from it so You can get the same information obviously as Jason and If you want to do your own integration or extend, you know the store pool Open stack integration you just talk to our API and you you know ask the API create me a volume It creates the volume you ask the API Attach this volume to the specific host it does that and Let's you know, let's do something This is a list of the volumes Let's create a new volume. Let's say volume open stack summit We'll give it a size and We'll say that's Volume which is going to be on on a hybrid store pool pool I'm sorry about the long names just open syndrome likes to put these really long names so it kind of screws up the Layout a bit Right, so this is the volume. It's you know, thank you about volume three copies There is nothing stored in it at the moment as a store pool is thin provisioned. There is nothing in there you can also Attach the Volume to a specific host and that makes it Appear as a local block device. So there it is And then you you can work with that block devices, you know with any say LVM logical volume or any local as if it was a local hard drive So One thing you can do for example is you can write data to it You can create a say a file system directly on top of the block device or you can attach that block device to a virtual machine Let's say in this example we put a file system directly on top of the block device There it is And and that's you know that file system is now created And we can you know say for example, we mount that file system somewhere Then you have you know, that's a local file system here Other things you can do you can create snapshots from volumes. So, you know Volume OSS snapshot we don't need to give it a name. It has an automatic name So now we have another snapshot And these are actually what I'm showing you now are things like Using store pool directly instead of through through Cinder. So these this snapshot for example is a snapshot which is not not controlled through Cinder And if we look here So that's you know snapshot OSS 23 and it doesn't have a Cinder name. So you can You could use store pool for OpenStack workloads as well as other workloads You can have kind of a one large storage system and have open stock on it and open stock creates its own volumes and snapshots in the system And you could have other volumes which are volumes and snapshots which are not control through open stack and Yeah so that's the You know CLI the our concept with the CLI is Absolutely every function you have in the CLI you also have in a JSON API. So there is nothing that Everything you can do through the CLI every single comment you can do through the CLI. There is also an API call that does exactly that Yeah and That's The CLI API part and are there any questions on this part? Yeah Oh, sorry Sure, so you take a snapshot. We can even take you know the snapshot which is created by Cinder and we say store pool Volume new parent Okay, I Can't paste this for We'll use the short one. I just don't have a kind of a way to copy copy it and paste it back And so you have this new volume which is based on the snapshots, which we just created and You know Attach volume new client for Mount Dev store pool new Into media new and You know, so that's that's it kind of a the same volume we just created. All right. Any other questions? Okay Will Let's move to performance So the performance numbers I mentioned When we talk to a lot of people they think these performance numbers are impossible because you know the generally concept people have is that a hard drive can only do a hundred IOPS and That's not necessarily true. It depends a lot on the way you write data to the hard drive and we do that in a Unusual way so store pool is a The way we do that is different from the way most other storage systems do it Which allows us to do things like Okay allows us to do things like so this is a Random rate with 64 Let's increase that a bit the 256 parallel operations on the volume which we just created from a snapshot. Okay And we do We just launched this random writer And it does that at 16,000 IOPS even though this is a triple replicated volume on a Cluster which has 28 drives in total But Okay store pool placement group HDD list But only these Which are 24 okay, so on 24 hard drives 16,000 random writes on 24 hard drives The way this specific volume is configured at the moment is that it's He has two copies on hard drives and one copy on SSDs so all the reads come from the SSDs from the SSD and I haven't I haven't written the volume fully yet and I mean kind of all the time So I can show it to you later. So all the reads come from SSDs from one client from one store pool client you can get about the hundred thousand IOPS and you can also From each store pool server. You can also get about the hundred thousand IOPS So in a cluster it kind of scales with the size of the cluster and The number of workloads on top any last questions For the volumes we just created No, because we It's kind of out of my depth there so I Where is it? Okay. Yeah. Yeah, so it's yeah, just like a Any, you know, it's in their integration All right Store pool at the moment. It's not on these machines. It's not packaged like an RPM. So but they are Kind of a few processes that run to make store pool work So this is store pools cluster management service the store pool server which manages local drives This is totally API And this is store pool client the store pool bug device driver Okay And all right, okay, and there are a few kernel modules in there All right, and I can sit down with you later because I'm really out of time Thank you all And if you have any other questions, just come by our booth it's e14. Thanks