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Guide to Shop Railway Track in Digah House Company

Guide to Shop Railway Track in Digah House Company

2021-11-17
Digah Company
46

On this page, you can find quality content focused on railway track. You can also get the latest products and articles that are related to railway track for free. If you have any questions or want to get more information on railway track, please feel free to contact us.

Here are 2 keys about the railway track in Guangzhou House Empire Construction&Furnishing Co.,Ltd. First is about the design. Our team of talented designers came up with the idea and made the sample for a test; then it was modified according to market feedback and was re-tried by clients; finally, it came out and is now well received by both clients and users worldwide. Second is about the manufacturing. It is based on the advanced technology developed by ourselves autonomously and the complete management system. Continuing to provide value to customers' brands, Digah Company branded products gain great recognition. When customers go out of their way to give us a compliment, it means a lot. It lets us know we're doing things right for them. One of our customers said, 'They spend their time working for me and know how to add a personal touch to everything they do. I see their services and fees as my 'professional secretarial help'.'The teams from Digah Company are able to efficiently pilot international projects and to offer products including railway track that are appropriate for local needs. We guarantee the same level of excellence for all customers worldwide.
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Understand Football Positions
Understand Football Positions
An overview of football positionsAnders Torstensson is a Swedish football manager. His last position was manager of Mjällby AIF.Explain Positions in touch Football !!? of football positionsTouch Football Positionsi need help with soccer positions? of football positionsSoccer has many different positions and many different names that come along with them.Each player position has his own very specific task, from defending against opponent attacks to scoring.To simplify, we will categorize the football positions into four: the goalkeeper, defenders, midfielders, and forwards.Goalkeeper (GK)The goalkeeper is simply known as the guy with gloves who keeps the opponents from scoring. He has a special position because only him can play the ball with his hands (provided that he is inside his own penalty area and the ball was not deliberately passed to him by a team mate).Aside from being the last line of defense, the goalkeeper is the first person in attack. That is why keepers who can make good goal kicks and strategic ball throws to team mates are valuable.The goalie has four main roles: saving, clearing, directing the defense, and distributing the ball. Saving is the act of preventing the ball from entering the net while clearing means keeping the ball far from the goal area.The goalkeeper has the role of directing the defense since he is the farthest player at the back and he can see where the defenders should position themselves.Distributing the ball happens when a goalkeeper decides whether to kick the ball or throw it after making a save. Where the keeper throws or kicks the ball is the first instance of attack.Some ofhistory's finest goalkeepersare Lev Yashin, Gordon Banks, Dino Zoff, Peter Schmeichel, and Gianluigi Buffon.DefendersA defender's task is to keep the ball away from the keeper, prevent opposing attackers from passing or receiving, and block shots. Defending requires a player to be well-fit, hard-working, and quick at anticipating the movement of the opponents.Defenders must protect the keeper: they should think of the goalie as an important person that opponents are not allowed to get near to. Typically, teams play with four defenders.Center-back/center-half/central defender (CB)In a four-player defense, the center-backs are the two defenders in the middle. They are erroneously called center-halves, because in anobsolete football formationcalled the 2-3-5, the "3" players are designated with that name. As tactics evolved, the "3" dropped to "center-back" but still retained the name "center-half."A center back must be strong, fearless, and good at timing tackles. Being tall is an advantage for a center-back as it allows him to win the ball in the air, an essential skill in corner kick situations. Ronald Koeman, Fabio Cannavaro, and Franco Baresi are some of the greatest center backs of all time.Full-back (LB, FB)A full-back is a defender positioned on the side. They are either classified as left back (LB) or right back (RB). The defenders positioned between them are called centerbacks.The full-back is tasked to prevent opponents from attacking on the sides. He must be quick and must be able to prevent opponents from making a cross. He is often assigned to mark the opposing winger.Wing-back (LWB, RWB)A wing-back is a full-back that advances up to the opponent's goal end. He runs the wholelength of the football pitch: he defends the flanks like a dedicated full-back and attacks like a winger.This is the most physically demanding position on the field. Cafu and Roberto Carlos are two of the best wing-backs ever.Sweeper (SW)A sweeper is located at the back of the defensive line, just in front of the keeper. This position is no longer popularly used in the modern game but was popular in the past especially with thecatenaccio system of Italy.A sweeper's task is to clear the ball in case it breaks through the defenders. He does not man-mark an opponent so he can collect loose balls or go upfield to bring the ball forward in attack. TheGerman football legendFranz Beckenbauer is the most remarkable of all sweepers.MidfieldersMidfielders link the offense and the defense: they bring the ball up to the forwards in attack and prevent the ball from reaching the defenders when not in possession. You can think of them as the telephone line that connects two people.Without a solid midfield, it is very difficult for the forwards to score and the defense is often put at risk of the opponents' attacks. Below are the many types of midfielders and the roles they perform.Defending/Holding midfielder (DM)A defending or holding midfielder is stationed just in front of the defensive line. His responsibility is to prevent the ball from reaching the defensive line. He must be skilled at intercepting passes, tackling the ball, and positioning themselves strategically.Claude Makelele and Dunga are two of the great holding midfielders.Central/Box-to-box midfielder (CM)A central midfielder is stationed at the center of the field. If he plays both offense and defense, he is called a box-to-box midfielder. The name implies that he runs from his own penalty box to the opponent's to fulfill different roles.A box-to-box midfielder does the following: create opportunities for the striker and stop the opponent's attacks. Stamina, technical ability, and relentless hard-work are the attributes of this type of midfielder. Steven Gerrard is the best box-to-box midfielder of his era.Attacking midfielder/playmaker (AM)The attacking midfielder is an advanced midfield player who is primarily inclined to attack. He must have excellent ball control abilities and tactical awareness.A playmaker occupies the same position as an attacking midfielder but performs a different role. This guy is considered the brain of the team, the most skilled player who orchestrates the attack and distributes the ball. A playmaker must be good in decision-making and as thefootball sayinggoes: when you don't know what to do with the ball, you pass it to him.The playmaker often wears the number 10 jersey. Some of the most famous playmakers in football are Zico, Zinedine Zidane, and Juan Riquelme.Wide midfielders/wingers (LW, RW)The winger plays the same role as the attacking midfielder but he focuses his attacks from the side. This position is often utilized in "odd" formations like 4-3-3 and 4-5-1.Since the winger often plays between the midfield and the offensive line, he is sometimes classified as a forward. A player who occupies this position must be fast, have excellent dribbling abilities, and accurate with passes.A modern winger is typically flexible and can attack from the center, which makes him take over the role of a forward. Ryan Giggs and Garrincha are two excellent examples of wide midfielders.ForwardsForwards are the most celebrated players in the team because they are often the ones who score goals. Since there are many ways to score a goal, there are also many types of forwards.Accuracy, head ability, and ball control are the typical qualities of a forward. A forward does not have to as much work as the midfield or defense but he must be able to convert when his teammates give him the ball.Center-forward/striker (CF)Center-forwards are positioned closest to the opponent's goal. They have two roles: first, they score goals through passes from teammates; second, they distract the defense to give room for the attacking midfielder, winger, or withdrawn striker to attack.A striker must be brilliant at receiving and controlling the ball, must be strong, and capable of winning the ball in the air. Skills at playing with the back to the goal is a prerequisite. Some of thegreatest strikers of all timeare Batistuta, Ruud van Nistelrooy, and Ronaldo.Withdrawn striker/deep-lying forward/second forward (WF)The withdrawn striker plays behind the forward. It is typical inattacking football strategiesto put him as the main scorer while the person in front of him serves as decoy. The deep-lying forward is often utilized in the 4-4-2 formation.A deep-lying forward must have excellent passing skills as he is expected to feed the striker and at the same time possess technical abilities with the ball as he often receives back passes from the striker. Pele played as second striker during his illustrious career.Other types of forwardsSome strikers are further distinguished by their playing style, not just by where they stay on the field.The "off-the-shoulder" striker is a center-forward who is very skilled at breaking the offside trap and frees himself to face one-on-one with the goalkeeper. He is called such because he often positions himself parallel with the opposing defenders' shoulders (in line with the second-to-the-last defender). Davor Suker of Croatia and Thierry Henry of France are off-the-shoulder strikers.The goal poacher is a type of striker who often scores goal from inside the opponent's penalty area. He does not create his own opportunities but relies on passes and second-chances to score goals. The poacher often capitalizes on the mistake of the defense. Examples of goal poachers are David Trezeguet and Pippo Inzaghi.
Analysis on the Current Situation of China's Semiconductor Industry
Analysis on the Current Situation of China's Semiconductor Industry
At the press conference of surging S1 chip a week ago, Lei Jun specially played a PPT thanking the government on the screen after thanking his partners and fans for their support:"Making chips costs a lot of money. The government supports me this time. In fact, my understanding is that money is not important, but it brings us warmth when we are dying. I hope that after seeing our report card today, whether the Zhongguancun, Haidian District and Beijing municipal government can give us more support."In 2015, when it was rumored that Xiaomi was the most popular for "core making", there were different opinions on Lei Jun's determination to make chips in the market. At that time, it was said that Xiaomi made chips because Lei Jun was unconvinced and had been criticized for its weak technology R & D ability; Others say that it is for the patent issue in the Indian market; Some competitors say that the role of its brand is greater than the actual role; Some even say that it is the government's support.If Lei Jun had not made a straightforward statement this time, many people would think that the statement of "government support" was very funny; The media, partners and fans on and off the stage of "confession" also saw Lei Jun's laughter after the confession PPT, which was also meaningful.After all, the support of the 2 million pilot fund is not even a little finger for Xiaomi, which has spent 1 billion yuan to build a core. However, at the surging S1 press conference, Lei Jun publicly appealed for more support from Zhongguancun, Haidian District and Beijing municipal government, which made us have to ponder the current situation of China's semiconductor industry.The government invested hundreds of billions of dollars in the semiconductor industryIn June 2014, the outline for promoting the development of national integrated circuit industry was officially released and implemented; During the 13th Five Year Plan period, the central government's fiscal and tax preferential policies for the semiconductor industry mainly continued the Guo Fa (2011) No. 4 document and Cai Shui (2012) No. 27 document during the 12th Five Year Plan period, which became a positive factor for the semiconductor industry.However, during the period of the 13th five year plan, the central government has restricted the qualification and support of IC enterprises to varying degrees compared with the period of the 12th Five Year Plan. Instead, it gives financial support to domestic semiconductor enterprises or assists in the acquisition and merger of international large factories by directly taking shares in the semiconductor industry investment fund (hereinafter referred to as the big fund).The first round fund of the national integrated circuit industry investment fund Co., Ltd. (ciciif), known as the "big fund" of the national team, is about US $20 billion, but according to market estimates, the total investment of the local government and state-owned enterprises will exceed US $100 billion in the first round. As of September 2016, about 60% of the $10 billion fund approved by ciciif had been invested in chip manufacturing, 27% in chip design, 8% in packaging and testing, 3% in equipment, and 2% in materials.Policy objectives and policy support of "made in China 2025" mainland semiconductor industryAs can be seen from the above figure, the most important policy goal during the 13th Five Year Plan period is that the self-sufficiency rate of domestic core basic components and key basic materials will reach 40% in 2020 and further increase to 70% in 2025. However, considering that the self-sufficiency rate of domestic IC market in 2015 was less than 20%, during the 13th Five Year Plan period, in addition to the significant expansion of wafer foundry and packaging test capacity, domestic IC design enterprises need to invest more R & D in key core products.There is no shortage of money, but overseas M & A is blockedIC insights, a market research institution, pointed out that to achieve the goal of 70% IC self-control rate in the 13th five year plan of the Chinese government, we need to rely on two basic elements: capital and technology. At present, with the support of large government led funds, funds will not be a problem.However, since 2014, China has tried to acquire technology practices by acquiring foreign semiconductor companies, such as ISSI and omnivision. Now, the acquisition strategy is not effective. Most foreign governments are very vigilant about China's ambition in the integrated circuit industry. It is very difficult for Chinese capital to acquire foreign IC companies. IC insights even believes that the peak of opportunities for China to acquire technology through the acquisition of foreign IC companies has slowed down.Just a few examples:In February 2016, Fairchild rejected the US $2.6 billion bid from two Chinese buyers, China Resources Microelectronics and China Chuang, and chose on semiconductor, which offered a lower price than Chinese companies. The reason given was also that it was worried that the US regulatory authorities would block the transaction. Also in February, Ziguang shares under Ziguang group announced that it decided to terminate the acquisition of Western data, an old American storage company, for us $3.775 billion, also because the US overseas investment committee wanted to intervene in the review.In December 2016, China Fujian macro core Fund issued a statement on its website, withdrawing its offer for the acquisition of German semiconductor enterprise aisqiang and returning the previously purchased shares of aisqiang. Although the German Federal Ministry of economy withdrew the approval order for China Fujian macro core fund to purchase aisqiang company for 670 million euros, some media said, The Obama administration played a crucial role in blocking the deal.It can be seen from the above that western countries are becoming more cautious and even "restrictive" towards China's investment in the semiconductor industry. Peng Hongbing, deputy director of the Electronics Department of the Ministry of industry and information technology, once said in an interview with the Wall Street Journal:"The United States has too much unnecessary anxiety and does not want these conflicts between the United States and China. At the same time, it emphasizes that China must reduce its dependence on semiconductor chip imports."According to customs statistics, in 2016, the import of integrated circuits was 342.55 billion pieces, a year-on-year increase of 9.1%; The import amount was US $227.07 billion, a year-on-year decrease of 1.2%. In the same period, China's crude oil import was only 607.8 billion. China has spent nearly twice as much on semiconductor chip imports as on crude oil.In addition, according to the data of Bain & Co, China's annual consumption of semiconductors is worth more than US $100 billion, accounting for nearly 1 / 3 of the total global shipments, but China's semiconductor output value accounts for only 6% 7% of the world. Many imported chips are assembled in personal computers, smart phones and other equipment and then exported overseas. However, there is still a huge gap between the number of semiconductors produced by Chinese chip manufacturers and the number of semiconductors consumed by China itself.Investment fever is becoming the "catalyst" of the semiconductor industryIn order to change the situation of relying on others to provide semiconductor chips for a long time, China has taken various measures to support it since 2014. In the past, it used to promote the development of semiconductors by "widely casting a net". During the same period, it invested in 130 semiconductor factories in more than 15 provinces, but the effect was poor. With the further overweight of policies and the significant upgrading of China's semiconductor industry infrastructure, global semiconductor companies have taken the initiative to determine their China strategy to cooperate with Chinese manufacturers so as not to be excluded. Gartner, a market research firm, predicts that in the next five years, some international fabless semiconductor enterprises may shift as much as 50% of their wafer procurement demand to Chinese foundries.At present, there are two major semiconductor investment driving engines in China, the "big fund" and the Ziguang group, and they are not soft on the investment in wafer factories. Recently, there have been successive projects such as SMIC international, Changjiang storage and Nanjing Ziguang. Not only do Chinese people spend money on building factories, but also foreign enterprises actively spend a lot of money on chip manufacturing investment in China, presenting a rare situation over the years "Domestic and foreign" investment is hot.From Samsung's additional investment in Xi'an memory chips, the start of SK Hynix Wuxi No. 2 plant in South Korea, to the formal finalization of the "grid core" of the 12 inch wafer factory of grofangde GF and its transfer to Chengdu, it spans two major fields: memory chips and wafer foundry, and its geographical scope is all over central, East and West China.Specifically, in the field of wafer foundry, grofangde's competitors: TSMC's 8-inch plant in Songjiang, Shanghai and 12 inch plant in Nanjing; liandian's 12 inch plant in Xiamen; not to mention SMIC's new 12 inch plants in Beijing B2, B3 and Shanghai. The Chinese market seems to be an indispensable investment place for the layout of wafer foundry. Naturally, grofangde is no exception. It should actively seek investment in China Find a place to set up factories. It will not hand over China's great market to competitors.Obviously, the domestic semiconductor industry is ushering in a wave of investment boom under the joint promotion of policies, Chinese manufacturers and foreign players.However, two uncertainties also need to be noted.On the policy, the tough measures taken from the Obama administration, blocking domestic capital into related fields, and the new US President trump (Donald Trump)'s constant attacks on the mainland's trade practices, advocating the return of manufacturing industry and other policies, had to be vigilant.In terms of technology patents, with the increase of Chinese local manufacturers and overseas expansion, Samsung, Hynix, micron, Intel and Toshiba may make an issue of patents. Because the above-mentioned memory manufacturers have been manufacturing DRAM and NAND flash memory for several 10 years, there are many applications for memory technology patents and a wide range of product lines, few new manufacturers can not infringe the existing ones In the case of patent, develop new DRAM and NAND technologies.Xiaomi has taken a new step on behalf of domestic manufacturers, but China still has to cross these thresholds and challenges to move towards high-end manufacturing.
Make Shaw You Know Where to Shop in Ormskirk !
Make Shaw You Know Where to Shop in Ormskirk !
Strolling up Burscough Street towards Shaws Boutique fills you with a sense of wonderful anticipation for what lies in storeliterally! The boutique shop is lovely to look at from the outside with almost floor length windows and inviting displays giving passers-by a peek of what is on offer. When you first walk in you are warmly welcomed by founder and owner of Shaws Boutique, Niki Shaw. Looking around the stylishly designed shop you are immediately drawn to the beautiful womens eclectic fashion pieces and accessories by local, national and European designers. BackgroundNiki opened Shaws Boutique 3 years ago. She was a complete novice to the retail industry, leaving behind a career in social care. When she opened Shaws to start her own business she embarked upon a steep learning curve in an environment where she had little experience. Nikis first year in business was a huge challenge. She had to run a business and learn on the go, admitting that from time to time she made mistakes (but who doesnt!) Lessons have clearly been learned as Shaws Boutique is a little gem right in the heart of Ormskirk and its all down to Nikis hard work, passion and sheer determination to make it a success.Its all about the customers!Its clear when you meet Niki that she is passionate about her customers and puts them at the forefront of her business. Niki listens to the wants and needs of all, from young students to mature women, buying statement pieces and tailoring new collections for them. Niki also acts as personal shopper, always giving customers lots of time providing honest,helpful advice in their decision making process.Brand ImportanceBeing small and independent gives Niki the ability to try new brands and implement new ideas. Its very clear when in the boutique that her focus is on all aspects from on trend style to classic pieces with price points that are very reasonable. Shaws stock brands that are also sold in major department stores. You will find brands in the Ormskirk Boutique that are sold in John Lewis, i. e. slippers from Pretty You London. House of Fraser & Selfridges i. e. scarfs from Helen Moore & Bags from Red Cuckoo London There are also indivdual smaller brands such as toowordy a local brand from the Wirral making greetings cards and logo bags. Niki really cares about supporting local businesses and understands the importance of creating brand awareness for smaller independent brands.Nikis approach to changing her stock is very organic and she is not afraid to try a new brands. Her favourite season is fast approaching and summer will enable Niki to buy in new brands such as Nooki which is more of a premium accessory brand including hats, real leather bags and cover ups. Jewellery & Bags from Boho Betty and Jewellery from B CharmedShe stocks beautiful independently designed cards for those special occasions from brands such as Heart Designs, Hotch Potch, Louise Tiler & Katie Leamon. There is also a small baby wear and accessories range by Scandinavian brands Albetta & Maleleg. Amazing for those baby gifts should you need them.Niki is very involved in the digital age and is successful on Instagram which she uses to reach customers all over the UK (not everyone is lucky enough to have Shaws Boutique on their doorstep!). Her brand and the brands she supports are sent all over the UK and even as far away as Holland. Her very own brand!Niki Shaw has her own brand of candles. They come simply packaged in the Shaws Boutique logo packaging in various scents which make perfect gifts. Nikis favourite is the Tahitian Vanilla and Chilli Pepper. A new new candle will be introduced into the boutique shortly: a brand new scent et toie and this is a premium French candle alternatively presented in a True Grace like tin instead of the usual glass candle holder.I am pleased to announce that Niki will soon be launching a Shaws Boutique Body Wash and Bath Salts range which will complement her brand and surely prove very popular with her customers.What more could you want?Shaws Boutique is a beautiful shop which provides major brands to Ormskirk and beyond and features local, national & international smaller brands, so ensuring there is something for everyone. Shaws is a fabulous shopping experience and Niki has made it what it is today, working hard and passionately for her business and her customers.Many thanks to Niki at Shaws Boutique for all your time you have given to help me with this project. This blog is part of a community movement All in Ormskirk encouraging the people of Ormskirk to pledge their allegiance to #bevocalspendlocal. This is a new campaign and I hope to showcase other independent businesses in Ormskirk over the coming weeks.Please follow this campaign on Social Media and keep up to date with its progress.Be Vocal Spend Local
Why Do We Have These Video Cameras on Our Bus?
Why Do We Have These Video Cameras on Our Bus?
Why do we have these video cameras on our bus?Do not worry I felt like that when my school got video cameras. It's just for safety reasons, like is people get in fights or anything like that or if someone does something bad then the bus driver (or any other person really) will have proof. And again, just for safety reasons in general.— — — — — —Recording on video camera or from television to computer?Use windows movie maker. Upload good quality gta/kingdom hearts pics and video which are already available online and just edit the part that you want to include in your music video. capturing something on tv using a camera usually have this static effect that blur the screen and does give you a poor quality video (like a pirated copy). if you have a cd, save the movie file(.avi format) in your pc and upload it on windows movie maker. search the gta folder or kingdom hearts folder for an attached file that plays a short video which is part of the game or storyline, which you can play in windows media player. you can use that as part of your slides in your music video. like in warcraft (frozen throne) there is a short cgi video that plays as part of storyline. if you look into one of the folders you can play it without logging into the game. just copy the file then upload video in windows movie maker.— — — — — —Powered fiber cable drives video securityHigh-definition video cameras are increasingly popular as a means to secure sites such as hospitals and university campuses, but evolution in camera technology and the demands of specific venues are driving changes in the cabling systems used to connect these cameras. The need to bring power and high-bandwidth data resources to every camera in a broad-based deployment often means high construction costs and suboptimal placement of cameras. In this article, we will look at the changing technology in surveillance cameras, how this impacts the type of cabling used to connect them, and how hybrid cable systems can support future deployments. According to Transparency Market Research, the demand for video surveillance systems is rising, expected to approach $40 billion USD by 2020. Similarly, securitysales.com predicts a market of $42 billion USD by 2019 with a compound annual growth rate for IP-based video surveillance in particular of 24.2 percent from 2013 to 2019. Of course, market reports are only estimates, but all notable sources predict a continued increase in demand for video surveillance equipment. Many factors have been cited to explain the rise in demand for video security systems including, but not limited to, increased threat of terrorism, crime/violence prevention, the rise in the "Internet of Things" (IoT), and new applications such as commercial advertising (Imagine as you walk into a mall the system "recognizes" you, allowing delivery of various context-appropriate advertising tailored to your typical buying habits). In the past, lower-resolution analog security cameras have been widely deployed. But the quality of the video in these 920H and lower resolution cameras is far lower than the new wave of IP-based high-definition (HD) video cameras (meaning cameras with resolution of at least 720p). HD video cameras support 720p (720 vertical lines) or 1080p resolution. But, even higher resolution is always better in surveillance video because it allows those monitoring the video feed to see smaller objects, or to see people, license plate numbers, and other elements more clearly. With the advent of 4K video standards, security cameras are now supporting 3840 pixels by 2160 lines, or 2160p resolution, and camera makers are already experimenting with 8K video to once again double a camera's resolution. 4K video cameras are already making significant improvements in security. With high resolution, these cameras can be placed at considerable distances from the area they monitor and still allow digital zoom to pick up small objects. In one instance, a camera located two miles from a city center can be digitally zoomed to pick up license plate numbers. In addition, sites are enhancing security by using low-cost facial recognition servers to process the video feed. One customer recently cited to us that for as little as $6,000, users can deploy a facial recognition server and integrate this into the video camera control system (network video recorder) to provide quick identification of suspicious people. With higher resolution comes the need for higher bandwidth. Yesterday's video cameras could be connected with coaxial cable because they needed fairly low bandwidth. Some estimates are that a single 4K camera video feed, with modern video compression, needs about 15 Mbits/sec minimum of bandwidth (without video compression the bandwidth need is much higher). If one imagines a campus deployment with many cameras, then the bandwidth demand begins to add up. According to ABI Research, The Video Surveillance Report, 2010, the average Las Vegas casino has more than 2,000 cameras. By itself, this still might not absolutely require a move to optical fiber as the communications medium, however when the distances from head-end locations to these cameras are factored in, optical fiber begins to be attractive as opposed to traditional copper-based solutions. The need for bandwidth and power But in addition to bandwidth, video cameras also need a source of power, and this can be problematic. Colleges, for example, want to deploy cameras on light poles around campus, but those poles are often in power-off mode during daylight hours (controlled by photocells), so they cannot always provide 24-hour power to video cameras. In other venues, cameras may be placed on the sides of buildings or on utility poles, but in these cases the camera owner may have to negotiate access to power from the building owner or utility and may have to pay for that power on a monthly basis. If the decision is taken to tap into local power, then the cameras are themselves subject to the reliability of that local power source. To counteract this, network operators sometimes want to install local uninterruptible power supply (UPS) batteries, but these remote batteries are difficult and expensive to maintain. IEEE ratified a standard for delivering both power and data in a single Ethernet cable; it is called Power over Ethernet, or PoE. The standards 802.3af (PoE) and 802.3at (PoE Plus) define how power and data can be delivered at distances up to 100 meters via category cabling. More than a simple direct current (DC) power solution, the PoE standard incorporates excellent safety features, software handshaking, etc. into a truly useful solution. The broad placement of video cameras throughout a campus or other facility means that cameras can be hundreds of meters from the video head end. In fact, if very long distances can be supported, it becomes possible to reduce the number of head-end locations, further saving capital expenses and operating expenses. As a result, installers will often want to use optical fiber to form connections. Singlemode fiber can carry nearly unlimited data, so it is more than ample for connecting 4K or 8K cameras, and its reach can extend for miles. Multimode fiber, especially newer 50-micron core-size Om3 and Om4 fibers, can handle distances in the "hundreds of meters" range and so is also a viable option for many situations. So fiber is a great option for handling long-distance data transmission, but what about also delivering power? A powered fiber cable system (PFCS) addresses the need for local power as well as the need for fiber data connectivity. The PFCS incorporates a rack-mounted power and optical-fiber termination point, a hybrid cable that includes both singlemode and multimode fiber and electrical conductors, and a remote termination node that plugs into the camera being powered. In a PFCS, each cable is capable of powering any PoE-compliant device at a distance of up to 3 kilometers, giving the system 30 times the reach of standard PoE systems. An integrated media converter and PoE chipset work together to deliver a simple PoE or PoE Plus output in an RJ45 jack. The system incorporates DC/DC conversion technology to eliminate DC line powering calculations, and it features primary, secondary, and tertiary electrical protection for use in harsh outdoor environments as well as indoor venues. Powered fiber cable systems significantly reduce deployment costs and time to deployment by putting control over local power back in the hands of the network operator. These cable systems simplify power negotiations, metering, and monthly recurring charges for power at the remote sites, and they streamline deployments by providing power and network connectivity at the same location. With a PFCS, deploying video cameras becomes a fairly straightforward process. The PFCS acts as a long extension cord for data and power connectivity to any location desired, so the cameras can be placed exactly where they will do the most good, rather than at locations where power is available. The PFCS also eliminates the need for licensed electricians by staying within the National Electrical Code (NEC) Class 2 and Safety Extra Low Voltage (SELV) limits for low power, intrinsically safe electrical systems. Cables may be routed in the same cable pathways as Ethernet cable and other fiber-optic communications cables. Moreover, the PFCS saves the cost of running separate data and power cables. In a south Florida golf course, for example, a design for a power/data network supporting 36 surveillance cameras was initially done using separate power and fiber cables at a cost of $981,000, but the same design with PFCS cost only $839,0000-a savings of $142,000, or 14.5 percent. As video cameras come to support 4K and higher resolutions, installers and users can slash deployment costs, eliminate power negotiations and costs, and significantly speed camera rollouts by using a PFCS. He holds bachelor's and master's degrees in engineering from NC State University. The deployment of a powered fiber cable system at a golf course in Florida, as briefly described in this article, was honored with a 2015 Cabling Innovators Award. The awards program's judges determined that the innovations put to use in that deployment resulted in a substantial improvement over previous methods deployed, approaches taken, or products and systems used. Congratulations to CommScope on this honor. Look for more Cabling Innovators Awards honorees in future issues of Cabling Installation & Maintenance magazine.
The History of Glass Bottle
The History of Glass Bottle
ha i feel sorry for you you should go around a Latino area well thats how it rolls in cali epseically if you live 20 minutes from the border like me you just go to Mexico and buy a 6 pack or more of glass bottles whatevers1. If I fill a glass bottle with post 1982 pennies and put in a camp fire, will it melt (or partial melt-merge)?The glass will shatter. Try using ceramic clay. You could put pennies in the sides of clay container, then have the piece "fired" (put into kiln to bake). Might just work2. I'm looking to drill a small hole in a glass bottle, what is the best way to do that?Try a carbide bit (used for cement) and use some water to keep it cool. Go slowly so you do not break the bottle3. 1988 italian coca cola glass bottle?About 20 dollars4. doesn't the glass bottle coke taste much better than the plasic or can?i think it tastes better from the glass bottle than the can because when it's in the can it's exposed to the aluminum and i am sure some of it rubs off into the liquid5. Glass Bottle virus, adware, spyware malware: How can I remove it from my computer?Hijack This should remove it, download from their website6. how do you vacuum seal a glass bottle?Heat up your sauce as hot as possible, pour it in the jar, set the lid and then soak the bottle in cool/cold water. It's how people used to can their fruits/etc back in the day7. Is it easier to break a full or empty glass bottle?full cos theres more force8. Do you think pop taste better in a glass bottle?ahhh..I LOVE Coke in a glass bottle..Plastic makes it taste flat & blah9. How to open a glass bottle of coke without an opener?Hold the bottle top against a hard surface (your desk for example) and smack the lid of the bottle10. What happens when a glass bottle filled with very hot water is put into a freezer?nothing, it will just cool down quick. just like making a jelly with boiling water and putting it in the fridge to set11. Why does a glass bottle filled with water shatter if it's placed in the freezer?water expands upon freezing12. Pollution/Litter questions: How many years does it take for a glass bottle to decompose?Essentially glass does not decompose. Theoretically it may decompose in thousands or millions of years, but for all practical purposes it is here forever13. How do I get a label off a glass bottle without compromising its integrity?Try soaking the bottle in warm water and a little dish soap. If soaked long enough it should come off14. How old were you when you first had a glass/bottle of alcohol?16 for me....unless you can count a shot of grape wine at Christmas time I was 10 yrs old when Grandma allowed me to join in..=)15. What has been done to the glass on this bottle?There are two choices and you could only do one of them 1. it could be acid etched with hydrofluoric acid, which is incredibly dangerous to human bones if it gets on the skin and painful when in, not to mention nasty fumes 2. it could be done with abrasive blasting ("sand blasting" which does not use sand any more) controlling the size of the grit and air pressure to get the effect wanted - after practice for even coverage.16. How do I make a wood boat inside a glass bottle?Cut off the bottom of the bottle, place the boat inside, put the bottom back on. Or use to half piceces of Bottle,17. How do i take printing off of a glass bottle?Scrap most of the paper off then use fingernail polish remover to clean the glue off18. If you throw a sealed glass bottle of hard liquor in a fire and let it sit, will it explode?place container in fire get down on your hunkers and soon you will see exactly what happens,then you wont be able to see anything19. How do I get the inside of glass bottle clean?If the vinegar does not clear the glass try filling with water and drop in a denture cleaner tablet. Let dissolve and sit for 24 hours. See if it is clear then
Modelling Lunar Motion in Python Closed
Modelling Lunar Motion in Python Closed
Well, just to be clear: I haven't looked at your code, I'm not responding to that. I'm submitting in the answer section because I have a general comment.The treatment by Richard Fitzpatrick that you link to is an exercise in how to go about obtaining an analytic solution for the case of the the Sun-Earth-Moon three body problem. In the general case of three bodies with mutual interactions there is no exhaustive solution, but in some cases some well chosen approximations can make it feasible to do the computations with pen and paper. As we know: for centuries this is what astronomers did in order to do astronomy: you find ways to bring the calculations within reach of being handled with pen and paper.These approaches are not used when electronic computers are used to calculate celestial motion. On an electronic computer you use Newton's law of gravity in its direct form: $$ F fracGm_1 m_2r^2 $$(Wich in the case of the Sun, Earth, Moon system of course means that you process three interactions: Sun-Earth, Sun-Moon, Earth-Moon.)To my knowledge that is how on electronic computers all simulations of celestial motion are done.My suggestion: use cartesian coordinates, and use a non-rotating coordinate system. If you also want to plot the motion with respect to some rotating coordinate system then you can apply that coordinate transformation to the result of the numerical integration. (Again, I suppose that in past centuries in order to bring the calculations within reach of pen and paper it was in some circumstances efficient to express the equation of motion and the intended coordinate transformation in a combined formula, and proceed from there.) Let me add some general considerations.Trade-offsWith todays computing power: for the purpose of processing a three body case your computational power is effectively limitless. Only when you want to to model, say, an entire galaxy you need a supercomputer.In the treatment by Fitzpatrick there are approximations, he mentions neglecting higher order terms. Those approximations introduce error. Negligable in the short run, but over time you get accumulation of error.If the only expression you evaluate is Newton's law in bare form then there is no approximation in the formula's themselves. Then only one source of error remains, the precision level of the numerical integration. You have a trade-off there. Higher precision level may limit you to, say, computing only a couple of thousand years of Moon motion. Lower precision level may allow you to compute millions of years, but probably by that time accumulation of error has made the end state meaningless.(Also, over time the distance between the Earth and the Moon is increasing. There are tidal effects that result in the Earth slowing down and the Moon being pulled to a higher orbit. So a long term model would have include that gravitational interaction.)So it's good to be aware of the trade-offs that apply in your case, and to try and make sensible decisions.One important trade-off, I think: the simpler the expressions that the numerical integration evaluates, the more debuggable the simulation is. Newton's law of gravity is a simple, transparent expression.Displaying the resultsAgain, since your computing power is effectively limitless you can display the results of the computation in any way you want. For instance, you can choose to set up a side by side display of the motion with respect to some particular inertial coordinate system, and next to it the motion with respect to some particular rotating coordinate system. The required coordinate transformation for that is trivial.That is, given your limitless computing power the decision on how to display the results is independent from the decision of how to execute the numerical integration itself.There is no such thing as: "I want to visualize the results as motion with respect to this rotating coordinate system so I must do all the computation in that rotating coordinate system." Obviously the two are independent.• Related QuestionsQuantum version of the Galton BoardYou might like this 110-page paper by me and Alex Arkhipov, which is all about a quantum bosonic analogue of Galton's board (we even use the same graphic you did -- see Section 1.1!). In particular, we gave strong evidence that such a board (with an arbitrary configuration of "pegs," and with multiple entry points for the "balls") is exponentially hard even to simulate using a classical computer. This suggests that such a quantum Galton's board (which is now called a "BosonSampler") could be used as a rudimentary, proof-of-principle quantum computer. And indeed, within the last year the first BosonSampling experiments were done in linear optics (see here), although so far only with 3 photons.To make our argument for computational hardness work, we needed two crucial assumptions:(1) The "balls" have to be indistinguishable particles. If they're distinguishable, then the distribution for any one individual ball could still exhibit interference fringes. But once you knew the probability distribution for one ball, the distribution for n balls would just be obtained by sampling from that distribution n times independently -- thereby producing "conventional, classical" Law of Large Numbers behavior. By contrast, identical quantum particles can famously become "correlated" even if they've never explicitly interacted, as seen for example in the Hong-Ou-Mandel dip.(2) The "balls" have to be bosons. In that case, their transition amplitudes are given by nxn matrix permanents, the calculation of which is a famous hard problem in computer science. By contrast, if the balls are fermions, then their transition amplitudes are given by nxn determinants, which are easy to calculate classically.Of course, there's also a "narrower" way to interpret your question, which might be closer to what you were actually asking about! Namely, rather than an "arbitrary" Galton-like board, we could consider the specific geometry from the figure: so let's say, a network of 50/50 interferometers arranged in a diamond pattern in the plane, with a single source of particles at the top. And we could then calculate (or, if we're lazier, numerically simulate...) the particular probability distribution over n-particle outcomes that that configuration leads to, under two different assumptions:(1) That the particles are distinguishable. (In this case, of course, the problem reduces to working out the distribution for a single particle.)(2) That the particles are indistinguishable bosons.(Note that a third case, that the particles are indistinguishable fermions, never arises -- for by the Pauli exclusion principle, n identical fermions couldn't even "fit" simultaneously through the single source at the top.)If I have some time later, I might work out the answers and post them here -- but in the meantime, anyone else should feel free to do so first.Addendum: OK, so let's consider the case of a single quantum particle passing through a "diamond-shaped" network of 50/50 interferometers. In that case, the probability distribution after n steps will be determined, not by the nth row of Pascal's triangle (as in the classical case), but by the nth row of what we might call the "interferometric Pascal's triangle." The latter is defined as follows: let A(i,j) be the jth entry in row i. Then:A(0,0)1A(0,j)0 for all j0For ij positive and odd: A(i,j)A(i-1,j)A(i-1,j1)For ij positive and even: A(i,j)A(i-1,j-1)-A(i-1,j)I'm almost certain that the result will asymptotically approximate the standard behavior for the "quantum random walk on the line": see here or here for good overviews. In particular, the distribution will not look anything like the Gaussian one: instead it should be nearly uniform, except with a bunch of oscillating peaks near the two edges, with the size of the peaks getting damped as you move closer to the center. (See the linked papers for example images.)A slight caveat is that usual analyses of quantum random walks assume there's a "coin" (i.e., a spin-1/2 internal degree of freedom), whereas I've used a staggered arrangement of interferometers to remove the need for the coin. I don't think that affects the walk's qualitative behavior, but I don't have a proof
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