男式泳裤结构线设计研究

在对男式泳裤按照功能用途与款式进行分类的基础上,探讨各类泳裤在外观方面的设计空间。从视觉效应方面分析泳裤结构线的设计,并从结构线的形态、数量、位置等方面进行具体分析,探讨如何使泳裤在人体上呈现更好的视觉效果。最后指出可以通过合理设计男式泳裤的结构线充分展现人体美。

浅谈现代女装结构设计中的创新要素

在现代女装设计中,设计理念、结构设计、面料作为女装设计重要的组成部分,它们的创新和发展对女装设计起着决定性的作用。通过对现代女装设计中设计理念、结构线、立体结构、面料等设计要素的创新手法的论述,为其发展和创新提供新的艺术手法和设计思路。

浅析女装上省道与结构线的关系

省道是塑造服装造型必不可少的元素,在服装结构设计中起着举足轻重的作用。论文从省道与结构线的关系切入,分析了省道的设计、形式、转移原则和应用方法,指出了不同形式的省在服装结构线设计中的应用,从而寻求样板领域中的省道与设计领域中的结构线设计隐藏技术的契合,结合具体的案例分析总结出服装中省之魅力。

Android校园网移动客户端的设计及实现探索

Android是基于Linux内核的开源手机操作系统,其全球市场占有率在2008年为5‰,而据日Nielsen的调查资料显示,Android系统在2012年为463‰,世界排名第一。Android的核心竞争力是开源,即支持开发人员自由定制所需功能。但传统Web服务无法满足移动网络的要求,即无法满足移动校园网的要求。本文就Android的开发环境及应用程度结构予以分析,并基于分析结果和Android的开源应用程序组件就校园网移动客户端予以设计和实现。

试析广州大学松田学院校园网综合布线工程

校园网正逐渐成为各学校必备的信息基础设施,其规模和应用水平将是衡量学校教学和科研综合实力的一个重要标志。要想组建高性能、低成本的校园网,综合布线的好坏至关重要,好的综合布线系统犹如给校园网一个坚实的地基。

浅议服装结构线的设计

在服装设计学中,结构线的设计是服装造型的重要组成部分,它既包含科学原理,又包含美学原理,是科学性与艺术性的完美结合。本文通过对结构线的科学性与艺术性的阐述,浅议结构线的设计。

New Architecture of Pipeline CORDIC

Aim To design an ASIC based on CORDIC(coordinate rotations digital computer) to meet the requirement of coordinate conversion in high speed radar signal processing. Methods A new pipeline CORDIC architecture easily realized in VLSI was introduced. Results and Conclusion The results of hardware simulation with FPGA show that the pipeline CORDIC architecture meets the requirement.

The height-width ratio limited value for rubber bearing isolated structure computed by uniform design method

Rubber isolation is the most mature control technology in practical application, and is widely used by short rigid buildings. However, many high isolation buildings have been built around the world in recent years, which do not follow the existing criterions and codes. Many researchers began to research the special problems caused by larger height-width ratio isolation structures. The overturning effect of high height-width ratio structures with rubber bearing is firstly studied. Considering the main factors, such as the height-width ratio of structures, type of site, the designed basic acceleration of ground motion and the decouple factor in horizon, computing experiment is defined with the Uniform Design Method, which is also known as designing isolation structure. The forces of the bearing under edge of structures based on the position of the rubber bearing are calculated. The result indicates that the rubber bearings will lose its functionality under very high tension and compressing force of earthquake motion in horizon and vertical, when the height-width ratio is over a certain value. Thus, based on the calculation result of isolation structures defined in the uniform design method, regression analysis is conducted, and also the rubber edge force regression formula are gotten, which has higher correlation and smaller standard deviation. This formula can be used to roughly calculate whether the pull force occurs at the edge of the building. By the edge bearings of isolation structure minimum force formula, the height-width ratio limited value of the isolation structure is deducted when rubber bearing has minimum force of zero.

Static analysis of synchronism deployable antenna

A 3D synchronism deployable antenna was designed, analyzed, and manufactured by our research group. This an-tenna consists of tetrahedral elements from central element. Because there are springs at the ends of some of the rods, spider joints are applied. For analysis purpose, the structure is simplified and modelled by using 2D beam elements that have no bending stiffness. Displacement vectors are defined to include two translational displacements and one torsional displacement. The stiff-ness matrix derived by this method is relatively simple and well defined. The analysis results generated by using software de-veloped by our research group agreed very well with available test data.

Optimizing Earth Allocation for Rock-Fill Dam Construction

An optimal allocation of earth is of great significance to reduce the project cost and duration in the construction of rock-fill dams. The earth allocation is a dynamic system affected by various time-space constraints. Based on previous studies, a new method of optimizing this dynamic system as a static one is presented. In order to build a generalized and flexible model of the problem, some man-made constraints were investigated in building the mathematic model. Linear programming and simplex method are introduced to solve the optimization problem of earth allocation. A case study in a large-scale rock-fill dam construction project is presented to demonstrate the proposed method and its successful application shows the feasibility and effectiveness of the method.

A 14.5Gb/s word alignment circuit in 0.18μm CMOS technology for high-speed SerDes

This paper presents a word alignment circuit for high speed SerDes system.By using pipeline structure and circuit optimization techniques,the speed of the aligner is increased,and its performance is improved further through adopting the full custom design method.The proposed word aligner has fabricated in 0.18μm CMOS technology with total area of 1.075 ×0.775mm^2￣ including I/O pad.Measurement results show that this circuit achieves the maximum data rate of 14.5Gb/s,while consuming a total power of 34.9mW from a 1.8V supply.

Analysis on WPAN Mechanism Based on 802.15.4 and Data Structure Design

IEEE802.15.4 is the communication protocol meeting the requirements of short distance and low transmission rate, and achieving the objective of low power. The technique is an emerging wireless communication standard. It is a two-way wireless communication technology with short distance, low complexity, low power consumption and low data transmission rate and low cost. The paper analyzes the features, framework, performance indicators and overall hardware platform structure of JN5121 chip which is used in JENNIC Corporation. And the paper researches the characteristics of actual oroducts for project development.

Use of Crescent Shaped Braces for Controlled Seismic Design of Ductile Structures

It is known that the seismic response of a structural system is highly influenced, in addition to the earthquake input, by the dynamic characteristics of the system itself. This paper presents an approach for the identification of the characteristics of the structural system resisting to horizontal loads which enables to satisfy given seismic performance objectives. This is achieved by considering a total conceptual separation between the structural systems resisting to vertical and horizontal loads. The proposed approach is first briefly developed in general within a Performance-Based Seismic Design （PBSD） framework and then fully applied to the case study of a five-storey steel building structure. It is composed of three basic steps： （1） identification of the fundamental characteristics which should be possessed by the horizontal resisting system to satisfy a multiplicity of performance objectives, （2） development of a peculiar horizontal resisting system composed of ＂crescent shaped braces＂ which are specifically calibrated to satisfy given performance objectives, （3） verification, by means of appropriate time-history analyses, of the seismic performances achieved. In detail, the horizontal resisting system is calibrated to satisfy a multiplicity of performance objectives through the identification of an ＂objectives curve＂, in the Force-Displacement diagram, of the mechanical characteristics of the structure. The calibration is obtained by methods/tools borrowed either from Direct Displacement-Based Design （DDBD） or Force-Based Design （FBD）, depending on the specific performance objective to be imposed. The applicative example has been carried out with reference to three performance objectives and has led to the identification of a horizontal resisting system composed of special bracing elements capable of realizing a sort of properly-calibrated seismic isolation called crescent-shaped braces. The results obtained through non-linear dynamic analyses have shown that the proposed approach leads to the congruity between the imposed and the achieved seismic performances.

Circuit model based design and analysis for a four-structure-switchable wireless power transfer system

The four-coil wireless power transfer(WPT)technology can effectively improve the transfer efficiency.The high efficiency,however,cannot be obtained along the whole transfer distance due to the phenomenon of frequency splitting in the over coupled region.Aiming at this limitation,this paper presents a switchable WPT system to improve the overall efficiency by changing the number of working coils.The switching conditions for the designed system are determined based on the analysis of the transfer efficiencies of four structures,which is deduced through modeling the equivalent circuits.The simulation results well comply with the experimental results and both of them indicate that the switchable system can greatly improve the overall transfer efficiency along the whole transfer distance.The overall efficiency of the experimental system can reach above 70%at9.97 MHz without additional complexity,which is higher than any single structure system.

Compliant mechanisms design based on pairs of curves

The success of compliant mechanism design by structural topology optimization approach depends,to a large extent,on its structural geometry representation scheme.In this work,a novel representation scheme based on pairs of curves is presented.In the representation,the structure is characterized by a set of input/output(I/O) regions.While it is still unknown how the rest of the design space will be occupied by the structure,the I/O regions must exist somewhere because any structure must have parts which interact with its surroundings by way of at least one loading region,one support region,and one output region.For a valid structural design,pairs of Bezier curves are used to connect I/O regions in order to form one single connected load-bearing structure.The boundary is explicitly described,so the need for smoothening of the blurred and jagged edges can be avoided by developing such a representation scheme to directly generate smooth boundary structures.With the scheme,shape and topology can be optimized simultaneously,and the obtained topology solutions have no check-board phenomena nor intermediate zones.A multi-objective genetic algorithm is then applied to couple with the representation scheme for defining and encoding the structural geometry in the form of graph.The solution framework is integrated with a nonlinear fixed grid finite element method(FG-FEM) code for large-displacement analyses of the compliant structures.Simulation results from a displacement inverter indicated that the proposed representation scheme is appropriate.