Efficient design

Xem 1-20 trên 319 kết quả Efficient design
  • The main objective of this study was to determine an optimum and efficient design for conformal cooling/heating channels in the configuration of an injection moulding tool using FEA and thermal heat transfer analysis.

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  • This section presents and discusses the properties of structural steels that are of importance in design and construction. Designers should be familiar with these properties so that they can select the most economical combination of suitable steels for each application and use the materials efficiently and safely. In accordance with contemporary practice, the steels described in this section are given the names of the corresponding specifications of ASTM, 100 Barr Harbor Dr., West Conshohocken, PA, 19428.

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  • The third editionof Antenna Theory is designed to meet the needs of electrical engineering and physics students at the senior undergraduate and beginning graduate levels, and those of practicing engineers.

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  • Algorithms play the central role both in the science and practice of computing. Recognition of this fact has led to the appearance of a considerable number of textbooks on the subject. By and large, they follow one of two alternatives in presenting algorithms. One classifies algorithms according to a problem type. Such a book would have separate chapters on algorithms for sorting, searching, graphs, and so on. The advantage of this approach is that it allows an immediate comparison of, say, the efficiency of different algorithms for the same problem.

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  • Over the past decade, there has been a prolific increase in the research, development and commercialisation of Wireless Sensor Networks (WSNs) and their associated technologies (see Figure 1). This rise has been a result of a number of contributing factors, including continued miniaturisation (leading towards an era of truly ‘pervasive’ and ‘invisible’ computing); low-power circuits, devices and computation (for example, the ultra-low-power sleep states now found in microcontrollers); and efficient short-range communication (such as ZigBee and Bluetooth).

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  • Modern embedded systems come with contradictory design constraints. On one hand, these systems often target mass production and battery-based devices, and therefore should be cheap and power efficient. On the other hand, they still need to show high (sometimes real-time) performance, and often support multiple applications and standards which requires high programmability.

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  • The objective of this book is to present different programs and practical applications for energy efficiency in sufficient depth. The approach is given to transfer the long academic and practical experiences from researchers in the field of energy engineering to readers. The book is enabling readers to reach a sound understanding of a broad range of different topics related to energy efficiency. The book is highly recommended for engineers, researchers and technical staff involved in energy efficiency programs.

    pdf405p namde01 11-04-2013 55 13   Download

  • Build server-side applications more efficiently—and improve your PHP programming skills in the process—by learning how to use design patterns in your code. This book shows you how to apply several object-oriented patterns through simple examples, and demonstrates many of them in full-fledged working applications. Learn how these reusable patterns help you solve complex problems, organize object-oriented code, and revise a big project by only changing small parts.

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  • The energy crisis of the mid 1970’s gave birth to a movement to conserve energy. Over the ensuing years much has been done to reduce the energy consumption of new and existing buildings. Lighting efficiency has improved so much that today we use ½ the wattage without sacrificing lumens. Improved construction methods, better insulation and high efficiency windows have also helped reduce energy consumption. However, all of these measures have resulted in a reduction of Sensible heat gains while Latent heat gains have increased.

    pdf17p nhatvy 12-06-2009 131 10   Download

  • Contemporary organizations face constant pressure to enhance levels of service and productivity whilst also improving levels of cost efficiency. The volatility of external environment and the rapid pace of technological change increasingly demand innovative means of improving business performance and securing competitive advantage. Human resources (HR) are increasingly recognized as the prime source of competitive advantage and the need for effective people management is therefore more important than ever before....

    pdf321p greengrass304 15-09-2012 30 9   Download

  • Global warming resulting from the use of fossil fuels is threatening the environment and energy efficiency is one of the most important ways to reduce this threat. Industry, transport and buildings are all high energy-using sectors in the world and even in the most technologically optimistic perspectives energy use is projected to increase in the next 50 years. How and when energy is used determines society’s ability to create long-term sustainable energy systems.

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  • Radio Frequency Identification (RFID), a method of remotely storing and receiving data using devices called RFID tags, brings many real business benefits to today worldʹs organizations. It exerts a major influence in different life areas like inventory tracking, modern supply chain management, automated manufacturing, healthcare, etc. The benefits are multiple and include expedited data capture/lead retrieval, accurate and trusted data, reduced cost, time and work processes, increased speed, productivity and business efficiency, improved security, etc....

    pdf0p ktcn_1 10-07-2012 30 7   Download

  • This thesis is about the metaphors of the rainbow and the fogbow, investigations and evaluations, public internet monitors, writing women, reflections and discussions about politics, design and democracy. It is also about the ongoing re-structuring of participation in service design within the development of eGovernment. The aim behind the drive towards eGovernment is to modernise administration and make it more efficient. The transformation and modernisation of public services are proclaimed to bring about a change in services based on a ‘citizen-centred approach.

    pdf182p monkey68 13-03-2009 102 6   Download

  • The field of information and communication technologies continues to evolve and grow in both the research and the practical domains. However, energy efficiency is an aspect in communication technologies that until recently was only considered for embedded, mobile or handheld battery constraint devices.

    pdf150p bi_bi1 08-07-2012 28 6   Download

  • Growth in wireless services is increasing the number of copper and fiber cables that must be managed – causing an increased workload for reconfigurations and maintenance. Meeting the challenge of increasing profits in the face of fewer capital and operating resources to manage this steadily growing and more complex wireless network infrastructure requires improvements in operational efficiency from Network Operations.

    pdf8p halanh 14-08-2009 73 5   Download

  • Wireless communications is one of the most active areas of research over the past and the current decades. In fact, the demand for wireless services has been changing from the regular voice telephony services to mixed voice, data, and multimedia services over the wireless media. Since the mid-1990s, the wireless industry has been advancing at an incredible speed. For example, the 2G cellular systems (such as GSM, D-AMPS, and IS-95) have significantly improved the spectral efficiency and network capacity to support wireless telephony services....

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  • In this book for designers, developers, and product managers, expert developer and user interface designer Lukas Mathis explains how to make usability the cornerstone of every point in your design process, walking you through the necessary steps to plan the design for an application or website, test it, and get usage data after the design is complete. He shows you how to focus your design process on the most important thing: helping people get things done, easily and efficiently.

    pdf315p caucaphung 04-02-2013 25 5   Download

  • I realize the idea of learning how to use the command line, or set up a local development environment, isn’t as sexy as learning how to push the envelope of Drupal design. Trust me, I get it. But if there’s one thing that prevents Drupal designers from pushing that envelope, it’s this: site building in Drupal isn’t as efficient if you haven’t figured out at least a few of these tricks. Want to know why the same task takes some developers an hour or two, while it takes some of us several hours of banging our heads against the computer? It’s because they know how to...

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  • The purpose of stated preference design is how to collect data for efficient model estimation with as little bias as possible. Full factorial or fractional factorial designs have been frequently used just in order to keep orthogonality and to avoid multi-colinearity between the attributes. However, these factorial designs have a lot of practical problems. Although many methods are introduced to solve some of these problems, there is no powerful way which solves all problems at once.

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  • This paper describes an efficient parallel system for processing Typed Feature Structures (TFSs) on shared-memory parallel machines. We call the system Parallel Substrate for TFS (PSTFS}. PSTFS is designed for parallel computing environments where a large number of agents are working and communicating with each other. Such agents use PSTFS as their low-level module for solving constraints on TFSs and sending/receiving TFSs to/from other agents in an efficient manner.

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