Mrs. Weah (2nd from right) posed with others.First Lady Clar Marie Weah has been making a case for Liberian girls relative to education in Paris, France, recently, a release from the First Lady’s office in Monrovia has said.According to the release, Madam Weah elaborated on the current situation of girls’ education in the country at an event organized by French First Lady Madam Brigitte Macron.Madam Weah also craved for support from Mrs. Macron to augment efforts by the Liberian government in ensuring that girls not only enroll, but remain in school.She believes that investing in girls’ education is crucial for achieving gender equality and ensuring sustainable development in Liberia and across the world.According to the release, advocating for girls’ education is part of Madam Weah’s flagship program through the She’s You Movement, aimed at empowering women for a better and prosperous Liberia.The event, held on the sidelines of the Paris Forum under the theme, “Educating the Girl Child,” also brought together several African First Ladies. But the meeting between Madame Macron and her African counterparts seek to set the stage for more engagements at the upcoming 28th Africa-France Summit scheduled for June 2020 in Bordeaux, France.Meanwhile, Madam Weah is headed for Dubai in the United Arab Emirates (UAE), to participate in the Global Business Forum (GBF); Africa Business Women Luncheon in Partnership with Dubai Business Women Council.The exclusive round-table lunch event, scheduled for Monday, November 18, 2019, is aimed at sharing experience about opportunities and challenges for women in business while exploring potential synergies.Dubai’s most prominent businesswomen, along with CEOs and young entrepreneurs from across Africa and the UAE, are expected to attend the Summit.Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)
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Complexity, likewise, creates problems for the end users. I thought he was going to talk about how difficult it is to get a good building enclosure or mechanical system with a complex design. More than most of us in the industry, though, Robert Bean has a laser focus on the people who live in, work in, and otherwise occupy buildings, so he sees the problem of complexity all the way down to the occupant. It’s certainly important for all the people who work on the building, but as Bean said about operating the systems in a home, “If it’s so complex the consumer has to actually learn the designer’s profession, they won’t use it.”The combustion pigOK, let’s tackle the tough one now. You may be thinking that he said we’ve got to get rid of combustion because of air pollution or because it’s mainly from fossil fuels. You’d be wrong if so. His argument was efficiency — but not energy efficiency. He introduced a quantity that not too many people have heard of — exergy — and said that exergy efficiency is more important than energy efficiency in analyzing how we use energy.I have to admit I don’t understand exergy well. I’ve seen it mentioned in the past but have never jumped in to see what it’s all about. Since catching the presentation last week, though, I’ve been reading about it more and also spent an hour on the phone with Robert trying to get a handle on it.A little bit about heat and efficiencyIt’s hard to talk about exergy without at least dipping our toes into the thermodynamics pool, but I’ll try to keep this at the 3,000 meter level. (That’s ~10,000 feet for you civilians.) First, exergy is generally defined as the maximum amount of useful work (energy) you can get by moving heat from a higher temperature source to a lower temperature sink.For example, you can burn a fuel like coal to create a high temperature, converting chemical to thermal energy. Then you can use the heat to make high-pressure steam, converting the thermal energy to mechanical energy that can be used to turn a turbine that generates electricity. As the energy moves through the system, it does work and the temperature drops. A real power plant doesn’t extract the maximum amount of useful work from the energy because real systems are always less efficient than the ideal.And that, of course, brings us to Sadi Carnot and the maximum theoretical efficiency of heat engines. Carnot came up with the idea of an upper limit for energy efficiency, which is now called the Carnot efficiency. That theoretical efficiency depends only on the temperatures of the source and the sink. (For the record, it’s calculated as 1 – [TC/TH], where TC is the sink temperature and TH is the source temperature.) The bigger the temperature difference between source and sink, the higher the theoretical efficiency.When you multiply the Carnot efficiency by the amount of heat available, you find the maximum amount of useful work you can get from those two temperatures. Go back to the first paragraph of this section and you’ll find that this is exactly what we defined as exergy.Bean’s takeIn his presentation (which you can download from the BSC website), Bean showed calculations of exergy efficiencies for different fuels with different temperatures. For example, natural gas combustion results in an exergy efficiency of 6.1% (slide 172), whereas using solar thermal energy can be done at an exergy efficiency of 20.1% (slide 174). Those are all based on the temperatures of the source energy: 3,400°F for natural gas and 220°F for solar thermal.Based on those calculations, Bean says that we should opt for lower temperature sources of fuel. The way he put it is that it doesn’t make sense to create heat at a temperature of 3,400°F when we’re trying to heat our homes with fluids at a temperature on the order of 100°F. If we used sources with temperatures closer to 100°F, we’d be doing the job with a much higher exergy efficiency.According to Bean, using combustion to heat our homes is like doing backyard gardening with a trackhoe. It’s like hammering in finishing nails with a sledgehammer. It’s like using a Turbo-Thermo-Encabulator Max to harvest dental floss! (OK, he didn’t really say that last one.)My take on Bean’s take is that the temperature of the fuel is the main thing you need to look at because it governs the exergy. Rather than using high-temperature sources of energy, he thinks we need to leave the combustion for industrial processes and let the lower-temperature “waste” heat filter down to the low-grade uses like space heating.My difficulties with the exergy analysisI’m far from the smartest person who goes to Summer Camp. In fact, I was in the bottom half of my class in graduate school and usually have to work hard to understand the more abstract concepts. If I were a Richard Feynman or a Lise Meitner, the deep remifications of exergy would probably be immediately obvious to me. But I’m not and they aren’t, so I’m still sitting here trying to figure it all out nearly a week after Robert gave his presentation.One thing Robert and I went back and forth on when I spoke with him about this was his use of temperatures to draw conclusions. The trackhoe versus trowel contrast above works because of the vastly different capacities of the two tools. But temperature isn’t energy. A burning match at 1,400°F has a lot less energy available for heating than a 10,000 gallon tank of water at 100°F.Who cares, I said to Robert, that a gas furnace burns at a high temperature if it’s a condensing furnace and you’re extracting 96% of the BTUs and using them to heat the building? After spending an hour talking with him on the phone, the best I could make of this is that an exergy analysis doesn’t really help you when you’re looking at a single building. Its best use if for deciding how to use energy on a large scale.In Bean’s view, the best use for high-temperature fuels is for industrial purposes. Then you use the moderate temperature “waste” heat for processes that can’t use lower temperatures. Only at the bottom of the chain do you use what’s left for heating buildings.Now my mind is wandering to entropy and air conditioning and the distribution of electricity. I’m thinking about thermodynamic potentials, statistical mechanics, and the words of David Goodstein:Ludwig Boltzmann, who spent much of his life studying Statistical Mechanics, died in 1906, by his own hand. Paul Ehrenfest, carrying on the work, died similarly in 1933. Now it is our turn to study Statistical Mechanics. Perhaps it will be wise to approach the subject cautiously.My brain is hurting and my self-esteem is waning. But at least I can read the shirt Marc Rosenbaum was wearing on the last day of Summer Camp!Can you? (Hint: It’s his alma mater.) Allison Bailes of Decatur, Georgia, is a speaker, writer, energy consultant, RESNET-certified trainer, and the author of the Energy Vanguard Blog. Check out his in-depth course, Mastering Building Science at Heatspring Learning Institute, and follow him on Twitter at @EnergyVanguard. RELATED ARTICLESA Plethora of Building Science ConferencesAll About Radiant FloorsRainscreen Gaps and IgloosStuff I Learned at Joe Lstiburek’s House, Part 1Stuff I Learned at Joe Lstiburek’s House, Part 2 Why we should consider simplicity during the design phase Building Science Summer Camp was last week. That means I was in Massachusetts with 500 of my closest friends, staying up too late, talking building science out the wazoo, and attending some great presentations from leaders in the world of building science.My big takeaways from Summer Camp this year were Marty Houston’s “hairy hand of quality,” Robert Bean’s three little pigs, and a black toenail. The first was a striking image, the second is the topic of this article, and the third will probably fall off in a few days. (Sorry. If that makes you squeamish, just be glad I didn’t tell you how I relieved the pressure.)The customization and complexity pigsThe three little pigs that Robert Bean was referring to are combustion, customization, and complexity. I’ll save combustion for last because that’s where he used his most sophisticated arguments, including a term you may not be familiar with. Customization and complexity are similar but independent. A customized building can be simple, and a complex building could be standardized. Both customization and complexity, however, end up making sustainability a harder goal to reach.Customization, Bean said, is the opposite of standardization. If a mechanical contractor, for example, provides customized heating and air conditioning systems for every house he works on in a 40-year career, he may be leaving a lot of little nightmares for the service contractors who have to go in later and figure the system out. Here’s how Bean described it:You can take a contractor and plop a box full of parts in front of him, and he will interpret in his own mind with his own creativity how those parts should look when they’re assembled. So what happens is that if you go back twenty years or so, contractor A did it in contractor A’s way for that day on that jobsite. In today’s time, he’s done that for 20 years, and so have millions of other contractors, which means you can’t walk into a mechanical room and find the same system. It’s virtually impossible to go into any mechanical room, if it’s hydronic specifically, and find any standardized method.If you continue that process into the future — 5, 10, 20 years … over a 40-year period you have this smorgasbord of mechanical systems owned by consumers who haven’t got a clue what this is about. If you’re a contractor and get a call to service this system, where do you even begin?… And the sin in all of that is that the guy who did the customization, when he retires, he walks away from the system and he doesn’t care. He’s retired. The person he did the customized work for, they own it for life.
Top Reasons to Go With Managed WordPress Hosting dave copeland Tags:#privacy#web College admissions officers have learned to check applicants’ Facebook profiles, and what they see there can have a negative impact on the students’ chances. Guess what? The kids are a step ahead of them.Parents, teachers and guidance counselors warn high school students that what they post on Facebook could hurt their chances of getting into college. And according to a Kaplan survey of college admissions officials released last week, it’s not an idle threat: More than one in four respondents said they check Google and Facebook for information on applicants, up from one in 10 when Kaplan started tracking the trend in 2008.Of those who check, 35% said they have found information that negatively impacted an applicant’s chance of acceptance, up from 12% last year.“It doesn’t matter,” my 15-year-old niece said over dinner last weekend. “The seniors in my school just hide their profiles or make up a new name and then change it back when they get accepted to college.”It’s not just the students at her school. My own college-aged students, students at other high schools, and teachers and guidance counselors say that hiding profiles under aliases is just one of the tricks students use to dodge scrutiny during the college application season. Some deactivate profiles, others amp up their privacy settings. And still others are set up a second Facebook profile they call their “ideal self” account.Admissions Jiu Jitsu“Why say you went to a party on a Friday night when you can say you volunteered at a soup kitchen? Why say you spent the weekend playing Xbox when you can talk about the new art opening at the museum?” said Brent Busboom, an English teacher at Reno High School and Northern Nevada’s 2007 Teacher of the Year. Reno High is one of the best public high schools in Nevada and many of its students go on to top-tier colleges.Some contents of ideal-self profiles are legitimate. Others, however, are embellished or exaggerated. Students don’t see an ethical problem, Busboom said. It’s just “admissions jiu jitsu.”“Since students don’t volunteer this information to the admissions office, they don’t see it as lying,” he said. “Instead, they feel that if admissions officers are going to dig up dirt on them by prying in their personal lives, then they are going to game the system and create fake personas for them to discover.”Silly Rabbit, Tumblr Is For KidsFacebook is still popular enough that a college admissions official will raise a red flag if a kid claims he or she isn’t on Facebook. And the ideal-self profiles come in handy with certain scholarship sponsors, which have started requiring applicants to accept Facebook friend requests as part of the review process.Busboom’s account of rampant ideal-self profile setups was confirmed by Sedgrid Lewis, who owns Spy Parent, a company that helps parents monitor their teens’ online activities. It also may partially explain why teens are spending less time on Facebook and adopting other social networks like Twitter and Instagram, or simply favoring the old, reliable SMS message. “It started a couple of years ago when adults started taking over Facebook,” Lewis said. “This is why you are seeing more teens cross over to Instagram, Tumblr, and Twitter. Auntie and Grandma are not on those pages.” A Web Developer’s New Best Friend is the AI Wai… Related Posts Why Tech Companies Need Simpler Terms of Servic… 8 Best WordPress Hosting Solutions on the Market
Mute and DimThat’s pretty much all of the audio aspects that we’ve previously covered. Now, let’s take a look at what audio features we have here on the edit page. Underneath the video track area, is, of course, our audio timeline. If you right click on a track menu, you can change the audio track type from mono to stereo to 5.1 and so on. We can also mute and solo the track. I know this is a crash course covering just the basics, but I won’t tell you which buttons do what. I’ll leave that mystery up to you.However, if you ever want just to mute the entire timeline you can click the mute icon here. Likewise, you can simply lower the volume.The difference between muting or lowering the volume using this tool is that it only affects Resolve as a software operation. It’s a means of silencing the edit while you work or playback your material without having to mute Resolve from the OS volume bar. It doesn’t affect the audio levels on the timeline. So, if you render a video with the mute icon active, you still have audio on the given video.Next to the mute volume button, we have a dim button. This is useful when playing back your edit to someone. By hitting dim, the audio will slightly reduce in volume, allowing you to proceed with the edit at a more audible level. When clicked again, the audio will return to the normal levels. Again, this is non-destructive, and if you render your edit with this active, the audio will render at the levels set by the track mixer, not dimmed. In part 4 of our six-part video series The DaVinci Resolve 15 Crash Course, we take a look at what you can do with your audio on the edit page.Welcome to part four of the PremiumBeat Resolve Editing crash course. In this episode, we look at audio features on the edit page.Audio is often regarded as more important than visuals. An audio slip-up is easy to hear, whereas a visual slip-up can go unnoticed. After all, how often do we notice a crew member in the corner of the frame until someone points it out to us on YouTube.For a year or so, we’ve had the addition of the Fairlight audio page with a page dedicated to professional audio mixing. Not to be deceptive, but this isn’t going to be our primary focal point of the episode, and the same goes for the fusion and color pages. We’ll touch upon some features in our final chapter. Audio Feature RecapSo, there are a few audio features on the edit page that we haven’t covered. We’ll look at those but first, in episodes 1-3, we touched upon a few audio-related elements. Let’s quickly recap:If you want the audio element from a video clip currently in the source viewer, you just hover over the lower third of the video. Then, click and drag the audio waveform icon onto an audio track.On the timeline clips themselves, you can create a fade-in or -out by dragging the white handles inward. Then you can increase or decrease the audio level by moving this bar up or down. Or, if you open the inspector, you can adjust the volume with more control.If you find that your audio clips aren’t showing audio waveforms, don’t worry. You may have turned off the waveform display. To turn that back on, you just hit the timeline view options and make sure the audio waveform icon is highlighted white. Track MixerNow let’s have a look at how the track mixer functions on the edit page. As I mentioned in the initial tour of the edit page, you open the mixer by hitting the audio mixer button.If you initially only see a set of audio meters, click the ellipses and select mixer. If you’ve used an older version of Resolve, you may remember that we also used to have a clip mixer here. But, that feature has been removed.Here you’ll have an array of track mixers, and they’ll correspond to how many tracks you have on the timeline. However, there will be an extra mixer called main. You can use it to increase or decrease the levels of the overall mix.There’s no wizardry about using the levels. Merely push the fader knob up or down to increase or decrease them. On the Premiumbeat blog, we have a handy guide on what levels you should have your audio set to, so be sure to check that out if you get lost. Meanwhile, you’ll see that the audio levels are color coded to give you a visual indication of where your levels sit. Green is low, yellow is high, and red is very high, with probable clipping.Clipping is essentially when your audio is too loud to be properly audible. The audio waveform on the clips will give you a visual indication of when part of a clip is too high by changing the peaks to a lighter shade of the clip’s color.Pan MixerAbove the level mixer, we also have a basic pan mixer. Here you can pan the audio so it appears to be coming from a different direction.There are two ways you can use this tool. First, you click inside the box and then drag the blue square in the direction you want. So, if I want my audio to appear as if it were coming from the rear left, I drag the blue square to the bottom left of the square. Of course, to hear this exact pan, you need a monitor setup or headphones that can adequately hear the positioning of the audio. Otherwise, it sounds like it’s just coming from the left.If you double click the pan square, you are greeted with a pop-out pan display. This will offer further settings to fine-tune the effect. You can pan a specific clip by clicking on the audio clip, opening the inspector, activating the pan keyframe, and then animating as you see fit.EQ FunctionFinally, we have an EQ function on the mixer panel. However, this specific button was rendered useless in the latest update and to use it we need to head to the Fairlight audio page. But, we do have a basic EQ and pitch tools in the inspector.On the edit page, the effects and transitions for audio are on the effects panel. Now realistically, there are only a few ways to transition audio, such as a crossfade. To bring one onto the audio clip, drag and drop the transition onto an audio clip. As the name states, the only area you can position a transition is at the start or end of an audio clip. You can also press control T to have the default transition apply to the selected edit point. This shortcut works for the default video transition too. To make a transition the default, right-click and choose save as default.The audio effects work similarly. Find the needed effect in the effect’s library, then drag it onto the audio clip. You will be greeted with a pop-out user interface unique to the effect. For example, when we use reverb, we have a visualization of the reverbs effect on the frequencies of the audio signal.If you close the audio effects user interface but later want to adjust the parameters of the effect, you select the clip, open the inspector, and you’ll find the effects adjustable properties at the bottom. If you want to open the interface again, just hit this button.This pretty much covers the audio elements of the edit page. It’s pretty simple, right?Interested in the tracks we used to make this video?“Relaxing in Vermont” by Chill Study“Brooklyn Drive” by Chill StudyLooking for more on DaVinci Resolve? Check out these tutorials.How To Create A Sub Mix In DaVinci Resolve 14 – Video TutorialVideo Tutorial: How to Configure The ADR Panel In Resolve 15DaVinci Resolve 15 Video Crash Course — The Media PageDaVinci Resolve 15 Video Crash Course — The Edit PageDaVinci Resolve 15 Video Crash Course — The Edit Tools
APTN National NewsThis story started with a request for information and now it is leading to the question, just how open and accountable are First Nation governments in the Northwest Territories.APTN’s Wayne Rivers has this report.