Papers by Keyword: Specification

Abstract: CMOS image sensors can suffer from background noise in absence of any light. In order to suppress this it is important to keep this noise, referred to as dark-current low. This implies that the internal generation current should be very low. Trace metal impurities have been reported to increase the generation current. In this study the trap-assisted generation current contributions due to 7 different metal impurities have been calculated. It was concluded that Cu and Mn impurities yield the highest generation current contribution.

Abstract: Pure cement mortar and concrete possess disadvantages such as brittleness, low bonding or adhesion strength, low tensile strength, large drying shrinkage, low chemical resistance. In order to overcome these disadvantages, polymer concrete is used as a construction material in Singapore as the properties of polymer-modified (or polymer cement) mortar and concrete are superior to conventional cement mortar. In Singapore, new products or technologies can be found through distributers, agents, etc. Singapore is able to afford and try high quality products to maintain the quality of a building and structure. The importance of applying polymer to protect, repair, coat and strengthen concrete structures in Singapore have grown in the last two decades. To ensure and maintain the standards of construction and building quality, polymer concrete are used extensively in new developments in Singapore. In this paper, the mechanical properties and its corresponding testing methods for several types of polymer concrete used in Singapore are discussed. These products include mortar used to repair concrete spalling, acrylic polymer cementitious coating, waterproofing membrane, epoxy mortars and grouts, fibre reinforced plastic (FRP) and epoxy resin. In addition, the specifications for the above products used in Singapore’s Housing Development Board (HDB) are discussed in the paper as it’s a requirement for suppliers to test their products in accredited laboratories before it can be used.

Abstract: Reasonably determining the width of the harbor channel is one of the key issues of waterway design. This paper compares with the domestic and international relevant provisions for determining the channel width, summarizes the main factors of affecting the channel width, and takes the proposed 250,000 ton waterway of Panjin Harbor waterway for example, calculates and analyzes the differences of each specification, and points out the shortcomings of the domestic existing norms of our country and gives out recommendations.

Abstract: Specialization refers to externalities of the specialization in the form of industrial agglomeration. We pick up the data of 198 prefecture-level cities of China during the years 2007-2009 from the view of the effects of spillover of technology, in order to calculate the specialization index and analyze its features, and finally we study on the data to find out how specialization and diversity can make a contribution to the innovation of civil technology theoretically and practically and make suggestions on the corresponding policies as well. The results suggest that:(1) The relatively specialized industries in the cities of China is stable, and the specialization index of the cities who possess abundant natural resources such as the industries of agriculture, forestry, animal husbandry, fishery and mining is even higher, meanwhile the capital cities own a higher diversity index. (2) Both of educational expense and GDP affect the innovation of urban technology positively and significantly.

Abstract: Since the generation of prestressed concrete, the causes for losses of prestress have been always analyzed and studied and many achievements are made. However, as the losses of prestress result from many factors, it is very complicated to calculate various losses of prestress accurately. The formulas and methods used in the concrete codes of various countries for calculation of prestress losses vary according to their different purposes. This paper focuses on US code ACI 318-05, Eurocode EN 1992-1-1 and Chinese code GB 50010-2010 (the code for design of concrete structures), and carries out a comparative analysis in terms of losses of prestress for the three codes above.

Abstract: The purpose of this article is to follow the strategy of sustainable development of city comprehensive transport hub request, based on the public security construction principle, frame integrated transport hub construction organization design process.

Abstract: This paper shows the technical standards for distributed resources interconnected with grid in China and the other countries all over the world. For USA, the technical standards about DR interconnection with grid is IEEE 1547 series of standards, which include requirements of connection, testing, monitoring, information exchange, island operation and so on for DR. In international, IEEE standards are the main technical specifications for DR, and it has IEC 61850, IEC 63547, IEC 1727 and so on. But in China, the technical standards for DR are mainly composed by enterprise standard. Comparing with the standards in other countries, the standards of DR in China are not perfect.

Abstract: The specification of standard body knitting underwear is designed according to the elastic of the knitting fabric, then the body fitting experiments are implemented on the sample clothing. The assessment has done for different elastic and different size knitting underwear by using mental scale. The specification of knitting underwear is revised to obtain the most suitable for the body fitting according to the result of the assessment.

Abstract: The author wants to use a case study to investigate the injection moulding machine parameters which will affect the horizontal length dimension of a plastic component used in digital camera. Currently the injection moulding machine process setting caused variations in the diameter exceeding the specification limit. Therefore the experiment is needed to identify the process factors that could be set to maintain the horizontal length dimension closest to the target value and smallest possible variation. The experimental model is used to investigate four factors to identify the factors having large effect by using the Full Factorial Design of Experiment (DOE). The experiment has emphasized the use of these designs in identifying the subset of factors that are active and provide some information about the interaction.

Abstract: In order to detect the fault of automotive Electronic Control Units. In this paper, we proposed and implemented Controller Area Network (CAN) node management mechanism in the light of CAN technology standards and OSEK / VDX specifications. Besides, the standard protocols for analyzing low-speed CAN network application messages and monitoring network management messages had been developed. We utilized the vehicle network remote fault diagnosis platform and CAN analysis tool ZLGCANTEST to test the CAN data and analyze its real-time monitoring state. The experiment results indicate that CAN node management is capable of rapidly completing node fault detecting and promptly report node fault information for vehicle network remote fault diagnosis.