Innumerable problems can appear in the construction of sistemasque to contain mixture of access code together with the denegcios data the logic and the presentation, these applications are difficult to keep, to poisqualquer alteration that if makes is necessary to have well-taken care of not to affect outraspartes of the system. Ahead of this reason al appeared in the decade of 70 according to Gammaet., an architecture that was developed to be used in projects deinterface visual in the programming language Smalltalk, the estaarquitetura received the name from MVC (Model, View, Controller), that it is architectural umpadro, MVC the aid in the task to separate to asresponsabilidades promoting a low coupling and high cohesion, becoming osistema escalvel. A very important point is here not to confuse the MVCcom development in layers, development in three layers is umaarquitetura for software customer-server and the layers represent sistemasdistintos are basic that the presentation layer never has access dadosdiretamente, that is, must pass for the intermediate layer or the camadasintermedirias, therefore it can have n layers. Projects in multilayers decide some problems, mastambm can create some others, separate the interface of the user, the data business-oriented daaplicao and the logic become the application as a whole the most easy one deser understood, and allow that different teams work of form paralelaem different components, but, it possesss its negative side, therefore, increases oprocessamento or storage in excess, either of computation time, dememria, of width of band, or any another resource that either required to paraser used, or expense to execute one definitive task, as consequnciapode to harm the performance of the object that suffered overhead (processing ouarmazenamento in excess) Gotten in ' ' ' ' , however, if you not to take certain cares with the rules daarquitetura will finish with a slower system and less trustworthy than one two layers sistemaem, or a monolithic application.
Posts Tagged ‘technology’
Residents Supply
In the house with gas heating is necessary to pay special attention to the inner insulation, and the room heated with water, must be carefully isolated from the outside. If the new buildings energy conservation is used constantly, then change the situation in homes that are more than ten years, it is very difficult. Most of the houses were built back when the word "saving utilities" were little known. As consequence of the old buildings do not meet the current requirements of saving resources, not a qualitative change in heating systems and water supply. So today there are several other ways to solve problems in this area. Energy-saving housing: working together tenants and management companies.
It is mandatory housing obligation to arrange energy audits. After this examination of experts give their opinions about depressurization of the dwelling and will point out problems that should immediately. Energy conservation implies that in each room will be installed meters, taking into account the consumption of water and Gas and electricity meter. In this case, the residents there is motivation to conserve resources, including electricity: the costs will be immediately reflected in the utility bill, so the energy savings will cause that to reduce the energy consumption will be interested not only utilities, but also homeowners. In addition to reducing the cost advantage of installing an additional water and gas meters is the ability to install 'smart' equipment that can monitor emergency situations and respond immediately when they occur. Automatic mechanism to instantly report faults to the holder and take action themselves – shut off the water supply or block, if the gas supply system having damage.
Alternative Energy Source
Development of technological progress and modern society as a whole requires more and more energy. So familiar to us today, oil and gas are not unlimited, and gradually dry out, causing mankind to seek alternative routes for its production. Given the ever-increasing rate of energy consumption and negative environmental impact of modern fuels, an important point in the production of energy is its environmental friendliness. On today presented a lot of alternative sources of production: solar, wind, the so-called 'hydrogen' energy, the energy tide, the underground heat of the earth and t.d.Obschim disadvantage of all these sources is a tremendously high cost of necessary equipment, technical imperfections, the geographic location of energy sources. An important obstacle is the imperfection legislation and, paradoxically it may sound, our conservatism: we are still wary of success such as electric or hydrogen-powered car. Scientific and technological revolution, the victorious gait included in the xx century, wrongly shifted to second place this time-tested source of energy as biogaz.Chto is this? Biogas – fuel gas consisting of an average of 60% methane (CH4), 35% carbon dioxide (CO2) and 5% other impurity gases, whose composition varies somewhat depending on the type of waste. It is formed during digestion (decay) of organic residues of plant or animal origin without air (anaerobically) in water srede.Dlya biogas to its further use, this process is carried out in special vessels – digesters. In the digester system is organized mixing the fermentation mass, the device heating and Output the resulting gas is then used in either domestic or for technical purposes.
Over time, the number of released biogas digester is reduced and remains fluid, divided into several layers. Virtually all of the liquid is formed by the properties of valuable organic fertilizer that increases yields significantly. Its effectiveness has been proven by many research institutes of agriculture on its own experienced areas, as there are appropriate certificate. Biogas can be used: a household gas stoves and gas heating boilers gorelkahv low capacity to produce teplav gas generators for elektroenergiiChto do we have? completely independent power supply! With access to the biogas plant, a farmer or villager can fully ensure its permanent facilities clean fuel, heat, electricity, and all that – simply disposing of organic waste.
COMPENSATED INDUSTRIES
Person who orientates: Prof. Dr. Setsuo Iwakiri CURITIBA 2009 1. INTRODUCTION the beginning of the production of panel compensated in the deupor world if return of the year of 1913, and the first manufactured panels wooden noBrasil had been the compensated ones and had first had its installation in the south dopas in the year of 1940, being the substance main cousin the pine, extradada wood angustifolia Araucaria, popularly known as Pine doParan.
The compensated panel of has multiple applications. Suascaractersticas mechanical, great dimensions and varieties of adaptable types acada use, constitute the main attributes to justify the ample material utilizaodeste. The type of use depends mainly on the type of resin with that opainel was manufactured. The definition of compensated structural and not estruturaisdepende of the values of the physical and mechanical properties defined by normastcnicas. The classification of the panels also depends on the type of application (exposition) in function of the used type of resin. The compensadosestruturais panels are composites the phenolic resin base, and applied principalmentena civil construction as form of concrete, pisos, soul of beams, surround, etc.
The compensated panels not structural are composites the urica resin base eutilizados mainly in the construction of furniture, constituent of thick partition walls, or another type of object that does not require extreme load for interior use. The knowledge of the physicist-mechanical properties of painis an important information for some types of uses as: form deconcreto, furniture, thick partition walls, pisos, among others. These reflect aqualidade directly of production of the panel, being able itself to intervine in the process of fabricaotrazendo improvements in the production. Each country adopts a norm for standardization of seusprodutos, also the products wooden. Some types of normasprescritas for wood products exist as, for example: American norm ASTM (American Society of Testing Materials), German norm DIN (Deutsches InstitutFr Normung), European norm CEN (European Committee will be Standardization) and anorma Brazilian ABNT (Brazilian Association of Norms Techniques). This work aims at to understand the systems of qualidadeexistentes in the process of manufacture of compensated, as well as the carried through controls dequalidade in the products. It lowers the complete article to continue reading.
Structural Terms
Through this our study we go to be studying as the Internet functions in structural and economic terms. We go to see here the phenomenon of the social nets, sites of collective purchases and which paper of the professional of web ahead of this new scene that if draws with the Internet of the second decade of century XXI. The undeniable fact that the Internet comes if showing as a great advance that pass of the technological field and go to the field politician as seen nowadays with movements as the Arab spring, movements in the Europe and United States against the wild capitalism among others movements politicians whom if they form to apartir of great social nets in the Internet. Beyond this ideological question that we do not go very abiding in them here in this study we also have the great economic asceno that the calls startups or enterprises of high impact are propitiating the global economy. We understand here as Startups or enterprises of high impact companies who manage nets social, sites of collective purchases and diverse enterprises that have as main characteristic the innovation and atuaoa in calls niches of markets that is markets never before explored by companies as for example the social nets that I eat the name say propitiate social relationships thus making possible the socialization of the Internet. In social terms with the asceno each bigger time of the social nets changes the paper of the calls social classrooms with this all the social classrooms has access the information formations onlines making possible that these classrooms move of life. However the capacity criticizes of the Internet still and something unbalanced in social terms Ahead of all these phenomena social and economic politicians whom if it lives deeply through the Internet appears a question: Who anger to be responsible for the structural development of the Internet in the next years? Before answering to this question we go to say a little on estrutrua technique of the Internet in itself.
Hybrid Engine
The hybrid engine – this unit consisting of the internal combustion engine and electric motor, and it was invented in the late 19th century. At the time this technology has not acquired for development. But the motor was reliable and had a high efficiency. Batteries were then very cumbersome and weak, and the cost is very expensive, because of this invention to mass production was not horrible. In addition, the environmental issue was not as prevalent as it is now and invest in this project is not considered reasonable. Exactly 110 years later concern Toyota, following the global trend of caring about the environment, produces the first car with a hybrid Prius.
The proliferation and popularity in recent years with the hybrid car plant only grows. In advertising campaigns hybrid cars focuses mainly on their environmental friendliness, which makes exaggerate their ability to do so. Last year's roller Toyota Prius led the company to sanctions ASA, The Council is the British Advertising Standards. The advertisement stated that the annual CO2 emissions reduced by a ton. But in fact the car did not issue statements.
According to the review conducted by request ASA, compared with similar vehicles of carbon dioxide in Prius is really less. Despite this, expert opinion was that the company overstated the Toyota these values in their favor. ICE Car Prius has a capacity of 1, 5 liters. A comparative tests were carried out Toyotoysredi 1, 8-liter cars. Thus, the CO2 content in the exhaust was not as low relative to a half-liter engine. The use of such claims in advertising of Toyota in the future, representatives of the banned ASA. The staff of the Division 7 'SPE' Kvant'vot more than 50 years the main field activities of the development, production and maintenance of traction variable frequency drives for various applications. Our products have proven themselves in such areas as: – Passenger Vehicles – Electric vehicles. – Hybrid vehicles. – Technological transport.