In order to realize remote experimental teaching of the digital system courses, and according to the characteristics of those experimental courses, presents a kind of experimental teaching platform/system based on net...
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In order to realize remote experimental teaching of the digital system courses, and according to the characteristics of those experimental courses, presents a kind of experimental teaching platform/system based on network. It explains the system's overall framework, control function and design, and furthermore expounds the points and realization methods of the system client and server software and experimental hardware platform. This platform can complete from unit circuit experiments to integrated digital system experiments, and satisfies the requirements of digital system design and other experiment courses with a stable performance.
Selection and configuration of equipments in flax short spinning, performances of FXL series gilling machine, and its main parameters during processing were introduced in this paper. Discussion was also made on qualit...
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Selection and configuration of equipments in flax short spinning, performances of FXL series gilling machine, and its main parameters during processing were introduced in this paper. Discussion was also made on quality of sliver, machine operation and its deficiencies. Results show FXL series gilling machine could be used to produce flax short spinning generation-change products.
A kind of transducer testing system was designed in this paper. The system utilized data acquisition card and industrial computer as the hardware platform and used Lab VIEW as the software platform. The DC motor was u...
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A kind of transducer testing system was designed in this paper. The system utilized data acquisition card and industrial computer as the hardware platform and used Lab VIEW as the software platform. The DC motor was used as the load and the high-performance controller which can operate in four quadrants. The system completes dynamic and static performance test of the induction motor and the assessment of the transducer's performance and parameters. The agility and simple of Lab VIEW will offer facilities and necessary conditions for the testing system of research and performance.
Since some portable computational devices such as personal digital assistants and mobile phones have no computer keyboard, keystroke dynamics-based authentication (KDA) systems which combine password knowledge with ty...
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Since some portable computational devices such as personal digital assistants and mobile phones have no computer keyboard, keystroke dynamics-based authentication (KDA) systems which combine password knowledge with typing characteristics to enhance the security of general password authentication systems cannot successfully work. In this paper, we adopt rhythms clicked by a mouse as another identifiable factor and mouse clicks can be replaced by a stylus on non-keyboard devices, numeral buttons on mobile phones, or fingers on touch screens to enhance system portability. Experimental results showed that the rhythm clicked by a mouse is able to function as the second identifiable factor in the general password authentication systems or as the standby identifiable factor in KDA systems.
In recent decades,the importance of supply chain management(SCM) has received increasing attention from business practitioners,academicians,and the government in Taiwan because an effective SCM could enhance the perfo...
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In recent decades,the importance of supply chain management(SCM) has received increasing attention from business practitioners,academicians,and the government in Taiwan because an effective SCM could enhance the performance of a *** chain integration(SCI) among internal functions within a firm,and external trading partners (customers and suppliers) within a supply chain,has been considered as an important enabler for implementing supply chain ***,our knowledge of what influences supply chain integration is limited to organizational behavior factors and information technology factors,seldom research has investigated corporate governance *** amount of the investment on supply chain integration of a firm is enormous and the investment decision has to be supported or approved by top managers (e.g.,CEOs and board directors).Based on agency theory,the higher level of managerial shareholding could lead to the higher level of firm performance(interest alignment effect);meanwhile,several research has identified that firm performance could be enhanced by implementing supply chain ***,the higher level of managerial shareholding may lead to the support for SCI investment and the related activities,and thus increase the level of SCI. Accordingly,the purpose of this study is to verify the relationship between managerial ownership and supply chain *** results show that managerial ownership significantly increases the level of customer integration and information-based supplier integration;however,the effect is not significant on strategic supplier integration.
This paper shows how the application of pinch technology can lead towards great energy savings. Pinch analysis has proved to be a simple concept in a field known for complex mathematical methods. Reports of industrial...
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This paper shows how the application of pinch technology can lead towards great energy savings. Pinch analysis has proved to be a simple concept in a field known for complex mathematical methods. Reports of industrial applications claim design improvements in energy saving, due to optimizing the number of heat exchangers required for the same heat duty. The approaches to calculate maximum energy recovery and minimum number of units at different ΔTmin values made it possible for design engineers to distinguish between good and bad network structures prior to design. New graphical methods have been developed for HEN by using the advanced composite curves and grand composite curve to achieve the minimum utilities (hot & cold) requirement. 'Pinch Analysis' is often used to represent the application of the tools and algorithms of Pinch Technology for studying industrial processes. Developments of rigorous software programs such as ‘Heat-Int.’ have proved to be very useful in pinch analysis of complex industrial processes with speed and efficiency. However, the final result is a reduction of energy costs.
In processing waste water, we design a press data acquisition system to accurately measure press of output tube. The system is comprised of 16-bit ADS8361 and 8-bit AW60. The design of the system includes hardware des...
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In processing waste water, we design a press data acquisition system to accurately measure press of output tube. The system is comprised of 16-bit ADS8361 and 8-bit AW60. The design of the system includes hardware design and software design. Component design method is adopted in order to clear structure and increase readability and maintainability no matter what hardware design or software design. In addition, test results and designing experience are presented in the paper.
Because of the popularity of smart mobile devices with the capabilities to capture location information by using global positioning system (GPS), numerous novel geographical applications and services have been introdu...
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ISBN:
(纸本)9781457703898
Because of the popularity of smart mobile devices with the capabilities to capture location information by using global positioning system (GPS), numerous novel geographical applications and services have been introduced. Among these applications, geocast service has recently gained a lot of attractions, since it has great potential to achieve multicast-like geo-applications such as location-based shopping advertising and geographic emergency notification. Unfortunately, the network intermittent connectivity can be suffered by mobile users, especially when they employ low cost wireless connectivities to form mobile ad hoc networks (MANETs). Accordingly, a novel opportunistic geocast routing scheme (OGRS) has been proposed in the literature to facility geocast service over intermittently connected mobile ad hoc networks (ICMANs). In OGRS, the expected visiting rate to the destined region of a message is proposed for an intermediate node to choose the next-hop with larger visiting likelihood. However, the performance still can get worse in an ICMAN with large geographical scale, since the system requires extensive time to collect all necessary geographical information. As a result, this paper introduces an enhanced OGRS for a large scale ICMAN. It will employ an approximate region for choosing the potential carriers, if the destined area of a geocasting message is out of knowledge, or too far to be reached. Such approximate region has a larger initial size, but its radius will be exponentially decayed to the original radius of the destined region as time elapses. Simulation results demonstrate the enhanced delivery performance offered by the proposed OGRS with exponential decay for large geographical areas.
Automatic train control system(ATC) is a safety related system in urban rail transportation. As the latest ATC technology, the communication based train control(CBTC) system is a large-scale knowledge based system. Th...
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Automatic train control system(ATC) is a safety related system in urban rail transportation. As the latest ATC technology, the communication based train control(CBTC) system is a large-scale knowledge based system. The architecture, the trackside control level and the onboard control level of CBTC are discussed. Database storage unit(DSU), one of the five main components of CBTC, plays a key rule in CBTC. The track knowledge, including line grade, maximum speed limit, transponder locations, line topology are stored in the track database of DSU. The train database of DSU contains various trains' parameters such as length, speed, acceleration, deceleration, train time responses, etc. And the dynamic track database of DSU stores the data that can be modified by the ATS operator. The Zone controller in the trackside control level and vehicle onboard controller in the onboard control level work by using the knowledge in these databases.
The low beam light optical configuration of high brightness LED headlamp is designed in this paper. When we design low beam light, three same optical units are overlapped to achieve sufficient luminous flux. LED optic...
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The low beam light optical configuration of high brightness LED headlamp is designed in this paper. When we design low beam light, three same optical units are overlapped to achieve sufficient luminous flux. LED optical source is arranged and packaged into a LED by using multichip in linear array. Each unit uses multi-ellipsoid reflector to converge light issued by multi-chip high-power LED light source, which covers partial light to form by light-dark blocking some of the light baffle to form an cut-line, the light is converged through optical lens to obtain the light-type that low beam light requires. The application of ASAP software implements the simulation, and the test results show that this design meets the national standard of low beam light.
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