Virga Precipitation and Dry Thunderstorm

Virga Precipitation and Dry Thunderstorm Virga is the name given to precipitation (usually rain) that evaporates or sublimes before it hits the ground. It tends to look  like wispy gray streaks hanging underneath the base of a cloud. For this reason, you may also hear virga referred to as fallstreaks. The storms that are associated with virga produce trace amounts of ground level precipitation only. Why the funny name? Keeping in the tradition of clouds  whose names are Latin, the term is derived from the Latin word virga, meaning twig or branch, likely referring to the thin delicate streaks it produces. Relative Humidity is Under 50 Percent Virga is produced when precipitation falls from high clouds into extremely dry air (low humidity) and high air temperatures below. (Virga is commonly seen across the desert region of the Western United States, an area prone to both low humidity and high temperatures.) As the liquid raindrops or ice crystals hit the warm, dry air they absorb the high levels of heat energy which energizes the movement of their water molecules, transforming them straight into water vapor (sublimation). Eventually, as more and more precipitation evaporates into the air, the air becomes moister (RH rises). If precipitation is light, it can take several hours for the air to saturate. As the air saturates first aloft, then down to the surface, a kind of moist pathway is carved out that precipitation can follow to the surface as rain or snow. Virga On Radar Like all light precipitation, virga shows up on the radar as shades of light green (rain) or light blue (snow). However, with virga, while the radar may detect it, your eyes wont. If youve ever watched your radar screen and seen the leading edge of a rain or snow band over your location but not seen any rain or snow actually falling outside your door, then youve been tricked by virga before. This is common in winter, especially when waiting for the start of a snowstorm. Weve all heard our meteorologist say Its already snowing in the upper air, but the air at the surface is too dry to see it. Virga vs. Rain Shafts Its easy to mistake virga for a distant rain shaft (a dark curtain of rainfall extending from the base of a thunderstorm down to the ground). Whats the biggest give away for virga? If its virga, it wont reach the ground. Commas in the Sky It is also theorized that virga is partially responsible for creating hole-punch clouds. In addition, virga high in the atmosphere can reflect sunlight creating brilliant sun pillars and other atmospheric optics associated with sunlight. Edited by Tiffany Means

Tour Report at a nearby airport firefighting facility Essay

Tour Report at a nearby airport firefighting facility - Essay Example The facility was built and got commissioned in July, 2009. The facility has ten modern fire fighting vehicles that have a location on a drive through design. The purpose of the vehicles being placed in the drive through position is to be able to move as fast as possible in case of a fire emergency. The drive through design has direct access to the Hartsfield – Jackson Atlanta International Airport aircrafts apron system. Airport apron is the area in the airport where the planes are parked before departure or during maintenance. The new building where ARFF is at accommodates approximately fifteen firefighters (Snedeker, 2009). The building has training facilities, offices and conference rooms where several meetings happen. There are individual sleeping rooms for the firefighters who are on shift and locker rooms enough to accommodate the firefighters. There is a long sloping roof form that has a direct relation to the line-of-sight that is necessary between the control towers f or the taxiway. The airport has a Fire Training Research Centre (FTRC) that is used to train the staff and the firefighters. The staff acquire the much-needed technique to be able to deal with fire. The Hartsfield – Jackson Atlanta International Airport firefighters are trained because they must always be ready for blistering heat, blinding smoke, and blazing fires whenever they have to be on duty (FAA, 2015). Duty calls at any time, whether it is at night or during the day. There are challenges that the firefighters go through in their line of work. One of the challenges involves going through the fire and smoke to help people who are trapped. There are protective gears the staff members get to help protect against the fire flames and smoke. The firefighters have to go to the location in case one of the planes catches fire. The response time should be minimal to be able to save as much life as possible. The ARFF facility’s

Convention of architecture Term Paper Example | Topics and Well Written Essays - 1000 words

Convention of architecture - Term Paper Example Objects that are not visible at the plan level are represented using dotted lines on the diagram. The site plan on the other hand contains a structure or group of structures from above without any sections cut. It consists of the property boundaries, road and other ways of accessing the site and nearby relevant structures. A diagram entails the use of symbols or freehand drawing to generate a design logic.it can be modified into a more presentable form with the aim of representing the principles of a design and enhancing communication. Communication at an early stage of designing a complex structure such as a building is vital in ensuring the success of the design since the process involves the input of specialists from different disciplines.1 Diagrams give architects a rough idea of the end product which give insight on the adequate solutions to design problems. Since the finished work would be expensive and time consuming, the use of diagrams saves on costs due to repair and late c hanges in the design of the structure. A cross section is a vertical representation of a vertical plane cut through the object and is viewed from the front. Every detail that is cut by the section line is represented by a line that is bolder than the other representations. Sections provide a correlation between the different levels or floors of a building and other representations within the structure which would otherwise be difficult to comprehend from the plan views. A section can also be represented as a sectional elevation in which part of the building beyond the section plane is seen in the representation. In architectural design, a diagram is a graphic short hand representation of something different from itself. The diagram is understood both as a generative device and as an analytical or explanatory device. 2 The analytical role entails representation of the diagram diverse from the representation of a plan or sketch of a building. Even though a diagram is not considered a conventional structure, it seeks to uncover potentially existing structures of organization that are not evident at the moment. The generative role entails the use of a diagram as a form of representation in a design process and this differs from traditional ways of representing structures in that the diagram offers cognition of the object, real structure and the perceived interiority of the architect. The diagram is regarded as an intermediary in the generation process rather than an explanation or subsequent result. Classical architectural concept of a diagram depicts the diagram as something different from structure and it portrays a belief that structure is static, hierarchical and has an origin point. Breuer in his essay â€Å"where do we stand† 3describes the ‘New architecture’ of Modernism using an ironic phrase ‘maximum simplicity.’ This is in contrast to the diversity of issues and conflicts that influence architecture such as economic and a esthetic trends, conventions and inventions, relationships with customers among others. Modernism is the state of mind which describes the change in man’s attitude towards the abstract world and the cultural, aesthetics, economic, social as well as scientific artifacts. According to Eisenmann, superimposition refers to a vertical layering that differentiates between the figure and the ground while superposition is the coterminous horizontal layering that has no fixed point of origin or ground and where the figure and ground fluctuate between one another. Thus this

Project management approaches for dynamic environments Essay Example for Free

Project management approaches for dynamic environments Essay This paper sets out to investigate the nature of projects  conducted in fast changing environments. Examples and  theory are used to illustrate the nature and challenges of  this category. Suitable management approaches are identiï ¬ ed under the following headings: Planning, Experimentation, Lifecycle, Controls, Culture, Communication, and Leadership style. The dynamic project category.  The paper closes with recommendations for further  research. In this paper, control is taken to mean the mechanisms through  which resources are managed to achieve objectives [1], and is diï ¬â‚¬erent to the PMBOK ‘technique’ [2] which is strictly focused on bringing activities in line with a plan [3]. The term dynamic is taken to mean characterised by constant change [4]. In the project management context dynamism is taken to be a dimension of a project  that represents the extent to which a project is inï ¬â€šuenced by changes in the environment in which it is conducted. This paper argues that this is a non-binary dimension that  applies in varying degrees to all projects, so strictly any  given project is neither ‘dynamic’ nor ‘not dynamic’. All projects have some degree of dynamism, so the dimension  is not dichotomic. Therefore, the ideas in this paper may be applied in varying degrees to any project as deemed appropriate. For the sake of simplicity though, for the remainder of this paper, a dynamic project is taken to be one that is  necessarily subject to higher than normal levels of change  due to the environment in which it is conducted. The business environment is changing at an increasing  pace [5–7]. Rothwell and Zegveld [8] went so far as to say we are in the midst of a technology explosion. They argued  that 90% of our technical knowledge has been generated in  the last 55 years, and that technical knowledge will continue to increase exponentially. Perrino and Tipping [9] reported  Ã¢â‚¬ËœÃ¢â‚¬Ëœthe pace of technology is accelerating, raising the stakes and risks for  managing innovation, and requiring early  warning and shorter response time†. Change, in all forms  of technology and business processes, can be regarded as  increasingly pervasive and providing challenges even where high technology is not a core business, such as in mining  [10]. Consider how the Australian Submarine project was  challenged by developments in the IT industry between  the 1980s design phase, and sea trials decades later [7].  This paper will now investigate dynamic projects from a  theoretical point of view. Gray and Larson [11] argued that Pich, Loch and De Meyer [12] describe a type of project  that encounters unknown unknowns and how it is best suited to what they called a ‘learning’ strategy which involves scanning, problem solving and ï ¬â€šexibility. They argue that  this is distinct from projects conducted in well understood  environments which are suited to ‘instructionism’, and distinct from  Ã¢â‚¬Ëœselectionism’ where the most fruitful initiative is chosen after a pool of trials. Turner and Cochran [13]  espouse the ‘goals and methods matrix’ that describes four diï ¬â‚¬erent types of project according to how well deï ¬ ned the methods and goals are. Projects can have poorly deï ¬ ned  goals (‘ï ¬ re’) or poorly deï ¬ ned methods (‘water’), or both (‘air’).  Shenhar and Wideman [14] describe a type of project that involves high levels of uncertainty, using technologies together for the ï ¬ rst time. They call these ‘high tech’ [14]. They also describe a type of project that actually creates  new technologies, called ‘super high tech’. Shenhar [15] describes how ‘low technology’ projects are typically performed in construction, production and utilities, and high technology projects in the computer, aerospace and electronics industries. He oï ¬â‚¬ers building and bridge construction as examples of low technology projects. The key diï ¬â‚¬erence to Shenhar is the level of development work  involved, in that low technology projects have little, and high technology projects have considerable levels and usually require prototyping. Shenhar and Wideman [14] argue that another key diï ¬â‚¬erence is the number of design  cycles. In low technology projects they say there is typically only one cycle with a freeze before development, and with high technology there are at least two, typically  three cycles. Operational  work  Cioï ¬Æ' [16] suggests that ‘projects’ be placed on a spectrum of ‘newness’ from operational to project. The idea has been adapted in Fig. 1 to illustrate the sliding scale  of unknowns that applies to projects. Unknowns in this  sense refer to any aspect of the project, including the methods to achieve it, the objective, and the environment it has to operate in. The guide to the project management body of knowledge (PMBOK) [2] describes  Ã¢â‚¬Ëœprogressive elaboration’, where planning is developed in greater detail as the project progresses. Using progressive elaboration to ï ¬ ll knowledge gaps, it might be possible to move a project to the left in  Fig. 1, thereby achieving the objective in a more predictable fashion. However, rapid changes in the environment, including tools and methods, and attempts to innovate,  act to push the project to the right, increasing unknowns.  The two forces of exploration and change act against each  other continuously throughout the project. The challenge is to conduct exploration at a greater rate than the emergence  of environmental change. It is also important to ensure that the amount of change created by the exploration and  implementation is not counterproductive overall. An example of Project A in Fig. 1 might be a production line where there only variable is the colour required. The intention here is to review literature to provide a  broad overview of approaches that might be used to better  deal with dynamic environments. Approaches were broken down as follows:

Avant Go vs Palm VII :: Essays Papers

Avant Go vs Palm VII There are many people trying to find the best solution for wireless web browsing. At this time there are two major competitors, AvantGo, which uses any standard Palm device with AvantGo Server software installed on the desktop, and AvantGo Client, and Mobile Application Link software installed on the Palm. Then there is the Palm VII device that uses a wireless modem and a connection to a specialized ISP called Palm.net. While using a Palm device with or without a modem, it is possible to access web content. If you have a wireless modem it is possible to dial a traditional ISP and connect to the Internet the same way you would at home with your desktop. The drawback to this method is the fact that a handheld does not have the power to display Web pages as they were designed. A better way of using a handheld to connect to the Internet is with the same wireless modem, but connect to AvantGo to view content. AvantGo’s client depends on a network application called Mobile Application Link, which allows data to be transferred between the client and the server. When a request is sent to the server, the server then goes out to the Internet and retrieves the requested data. Next, you as the user may define personal settings on each page you request, including the link depth or how many links you want to follow on this resource. However, if you try to refresh or follow a link past its specified link depth then you must re-sync with the network. In the future it may be possible to have an entire workforce connected through their handheld. The fact that when using a wireless modem the sync is immediate, therefore, everyone will have the most up to the minute data anywhere in the world. AvantGo Servers use standard HTML code to display the Web pages on a handheld. Any existing page on the Internet could be turned into an AvantGo mobile Web application without any specialized development tools. Some pages look better than others when viewed on a handheld because most of the pages on the Internet have not been optimized for viewing on such a small screen (only 150 x 150). The Palm VII does things only slightly different. The Palm VII is a completely self contained, all that is needed to connect to the Internet is the raising of the antenna.

Health and social care unit 7 Essay

Behaviourist approach, people believe that behaviour has been learned when we are younger and effects us later on in life e.g. if a child is too strictly potty trained then may effect them later on in life, and could have OCD Freud believed this. Classical conditioning is a theory discovered by Pavlov a Russian physiologist he worked on dogs and the digestive system before this study people believed that saliva was produced when food in in the mouth but then Pavlov found out it happened when the dog saw the food, possibly smelling the food. Pavlov used classical conditioning, his experiment was used with a dog. When the bell rings the dog doesn’t do anything until after a while Pavlov gives the dog a treat every time the bell is rung so every time the bell rings now the dog will start salivating. This is how systematic desensitisation works, people associate a fear or a phobia by something they may of seen the say that an accident may have occurred causing the phobia e.g. if a man had a car accident and the car that crashed in to him was blue, the man may have a fear of blue now because of this (the dog learning that food comes with the ring of the bell) psychologists can help this by slowly showing the man that blue isn’t scary by talking about the colour, seeing the word written on paper then seeing the colour and being comfortable with it, this is then cured of the fear this is called the Hierarchy of fear. This reaction can’t be learned so he called this unconditioned response. This theory is what psychologists use to look at phobias, it shows that there is always something too set a behaviour off e.g. if something bad happened in your life and the most thing you remember is a poster on the wall or even a song you listened to that night, you could develop a phobia of that poster or song. The best way to help this is to find the cause and ask the patient to make a list of their worst fear about that phobia. This is where operant conditioning comes in, this is used to help peoples frame of mind, they use reinforcement techniques and create more appropriate behaviour. â€Å"Let’s say that at your house whenever someone flushes the toilet the shower gets crazy hot. After a while, you learn to jump out of the shower stream whenever you hear the toilet flush. A guest at your house won’t know that this happens, so she will jump out of the stream of water when it gets hot but not when the toilet flushes.† http://instruction.blackhawk.edu 20:39 18/12/12

Video Games Can It Cause Violence - 1379 Words

Victor Chau Professor Myers ENGL-1301 Video Games: Can it cause violence? Any action against violent video games should be met with more research and that any banning of violent video games should come under more significant scrutiny. For sometime, many people consider violent video games to be the cause of violent behavior in the younger generations. However there are also people who would refute such claims that violent video games are the causes of tragedies, and would point to another reason why anyone would perform violent actions. The concerned peoples who have put stock in the notion that violent video games has caused youths of today to perform school shootings and/or suicide have only been lightly educated about the positive impact that video games have done for the younger generations, as well as the older generations. In fact, people would say that it is coincidence that a killer who have just happened to play video games could have been inspired by the virtual simulations that video games can provide. A what if example would be to say if a person who is set on shooting people in a certain drove to the location of his designated shooting spree in a particular brand of car. Is the company who produced such the car at fault for making and selling it to the perpetrator? Of course not. To quickly address also, all video games forgo a rating system created by the Entertainment Software Rating Board, or ESRB for short, in order to determine which audience a certainShow MoreRelatedEssay about Do Video Games really Cause Violence?1028 Words   |  5 Pagesâ€Å"No one is suggesting that [violent video games are] the only reason they went out and committed those horrific acts, but was it a tipping point? Was it something that pushed them over the edge? Was it a factor in that? Perhaps. 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