基于无障碍需求的公共信息导向系统标准化研究

本文通过分析不同功能障碍类型的认知特点及对公共信息导向系统的需求,提出了基于无障碍需求的公共信息导向系统标准化原则,并从系统设计和设置两方面针对不同功能障碍类型提出了标准化要求。

SX2150KY车钢索导向系的设计

本文主要分析了钢索3°自绕原理，介绍了SX2150KY车导向系的设计，并提出了在使用中应注意的事项。

浅谈轻卡车型匹配前独立悬架系统的研究与运用

本文通过对双摆臂式独立悬架的结构特点进行分,对某轻卡匹配双摆臂式独立悬架系统进行阐述,具体对导向杆系、螺旋弹簧、减振器进行匹配分析计算,同时借助ADAMS进行仿真验证其合理性。

板簧悬架系统与转向杆系的匹配性分析

为减少重型车辆转向桥的悬架系统与转向拉杆的运动干涉,针对不同的板簧悬架构造形式,分析了车轮跳动过程中悬架的运动过程及其与转向杆系的匹配性。采用ADAMS软件构建了转向悬架系统模型,以减少车轮的最大干涉角度为目标,研究了转向杆系与悬架系统的最佳匹配形式。所得结论有利于得到理想的转向、悬架协调运动关系,对转向系统、悬架机构的设计有一定的指导作用。

Theoretical expressions of thermal conductivity of wood

In this paper, the theoretical expressions of wood thermal conductiv ity in the choral and radical direction are derived from the micro-structure of wood by applying some basic principles in physical mechanics. The thermal conduc tivities of about twenty species of trees were calculated by means of the expres sions and compared with its experimental values under the same condition. The av erage relative error is about 5%, so the calculation result is satisfactory.

基于半车模型的汽车车轮动载估算研究

文章基于四自由度半车模型提出了汽车车轮动载的两种估算方法。为了测试车轮动载估算方法在不同行驶工况下的估算精度,基于多体动力学仿真软件Adams/Car进行了八种不同工况的动力学仿真。结果表明在车辆有水平方向加速度时拓展估算方法相较于基础估算方法有明显的估算精度提高。此外通过在频域范围内对比动载估算方法拓展前后的结果发现,悬架导向杆系传力的拓展主要在频率范围0-3Hz对车轮动载估算结果产生影响。而在10-40Hz频率范围内的动载估算误差主要由悬架零件力的估算偏差导致。

A dual working mode mobile robot system based on visual guiding and visual servoing

A dual operational modes mobile robot system based on visual guiding and visual servo control is presented. This system consists of a mobile robot with a two-axis manipulator and a tele-operation station. In the visual guiding mode, for the robot works in an open loop visual servo control mode, the manipulating burden of the operator is reduced largely. In the visual servo mode the robot can locate the position of the target assigned by the operator and pick it up by its manipulator. With the help of the operator, the diffieuh problems of finding and handling a target in a complicated environment by the robot can be solved easily.

Research on object-oriented SOC design methodology

The growing complexity of System on Chip （SOC） requres a system level specicanon and design approach. High-level languages such as C＋＋/SystemC can play multiple roles in system design as target languages. There are many practical problems in the application of object-oriented methods for this goal. Based on the analysis of traditional and system-level design methodology, a new object-oriented SOC design methodology with object-oriented design patterns is proposed, which emphasizes high-level design and verification. Aiming at the final goal of developing design patterns specific to SOC design, the reuse of design patterns in SOC systems and the capability of new SOC design patterns are discussed. With the illustration of some concrete examples of SOC design patterns, the application of object-oriented design methodology in the SOC design process is presented.

Outdoor guide system based on the mobile augmented reality technology

This paper proposes an outdoor guide system using vision-based augmented reality(AR) on mobile devices.Augmented reality provides a virtual-real fusion display interface for outdoor guide.Vision-based methods are more accurate than GPS or other hardware-based methods.However,vision-based methods require more resources and relatively strong computing power of mobile devices.A C/S framework for vision based augmented reality system is introduced in this paper.In a server,a vocabulary tree is used for location recognition.In a mobile device,BRISK feature is combined with optical flow methods to track the offline keyframe.The system is tested on UKbench datasets and in real environment.Experimental results show that the proposed vision-based augmented reality system works well and yields relatively high recognition rate and that the mobile device achieves realtime recognition performance.

Simulation Research on a SVPWM Control Algorithm for a Four-Leg Active Power Filter

In this paper the topology of a four-leg shunt active-power filter (APF) is given. The APF compensates har-monic and reactive power in a three-phase four-wire system. The scheme adopted for control of the four-leg active power filter,a 3-Dimensional Pulse Width Modulation (PWM) technique,is presented. The theoretical deduction of a space vector PWM (SVPWM) algorithm is given in this paper. The paper also analyzes the distribution of the volt-age-space vector of the four-leg converter in αβγ coordinates and describes methods to determine the location of the voltage-space vector and to calculate duration time. Finally,the algorithm is implemented in simulation; the results show that the total harmonic distortion (THD) of the three phase-current waveforms is reduced. The neutral wire current,after compensation,is about 0 A showing that the topology of the four-leg shunt APF is feasible and the proposed scheme is effective.

Contour Laser Guiding for the Mechanized ＂Vallerani＂ Micro-catchment Water Harvesting Systems

Mechanized construction of micro-catchments for water harvesting （WH） was successfully tested in the Badia （dry rangeland） areas in Syria and Jordan, using the ＂Vallerani＂ plow, model Delfino （50 MI/CM）, manufactured by Nardi, Italy. The plow was able to construct intermittent and continuous contour ridges, and could potentially be used to rehabilitate degraded rangelands. However, one major issue for large-scale implementation is the high cost and time required to manually identify contours for the plow to follow. Most existing auto-guiding systems, as usually used in road construction and agricultural land leveling, were expensive or impractical. The objective, therefore, was to add, adapt, and evaluate an auto-guiding system to enable a tractor to follow contours without demarcation through conventional surveying. A low-cost Contour Laser Guiding （CLG） system, with specifications that suit the contour ridging in undulating topographic conditions of dry rangelands, was chosen, adapted, mounted, and tested, under actual field conditions. The system consisted mainly of a portable laser transmitter and a tractor-mounted receiver, connected to a guidance display panel. The system was field-tested on 95 ha of land where the system capacity was determined under different terrains, slopes （1-8%）, and ridge spacings （4-12 m）. The easy adaptation and implementation of the CLG to the ＂Vallerani＂ unit tripled the system capacity, improved efficiency and precision, and substantially reduced the cost of constructing micro-catchments for WH. The system is recommended for large-scale rangeland rehabilitation projects in the dry areas, not only in West Asia, but worldwide.

Real-time operation guide system for sintering process with artificial intelligence

In order to optimize the sintering process, a real-time operation guide system with artificial intelligence was developed, mainly including the data acquisition online subsystem, the sinter chemical composition controller, the sintering process state controller, and the abnormal conditions diagnosis subsystem. Knowledge base of the sintering process controlling was constructed, and inference engine of the system was established. Sinter chemical compositions were controlled by the strategies of self-adaptive prediction, internal optimization and center on basicity. And the state of sintering was stabilized centering on permeability. In order to meet the needs of process change and make the system clear, the system has learning ability and explanation function. The software of the system was developed in Visual C++ programming language. The application of the system shows that the hitting accuracy of sinter compositions and burning through point prediction are more than 85%; the first-grade rate of sinter chemical composition, stability rate of burning through point and stability rate of sintering process are increased by 3%, 9% and 4%, respectively.

On the Relation between the Demand Environment and the Innovation

The demand environment has a great influence on innovations and the formation of the motive force of theinnovation. The demand causes the desire; the desire forms the motive force; the motive force inspires the innovative thinking;the innovative thinking becomes the innovative practice; and the innovative practice, finally, meets people’s demand.

The Moderating Effect of Team Orientation Over the Relationship Between TMT Strategic Decision Speed and Firm Performance

Due to the fast changing competitive environment faced by organizations, companies are forced to find ways to quickly adapt to technological innovations, changing demands of customers, and strategic actions taken by competitors. The purpose of the paper is to further the relationship between top management team （TMT） strategic decision speed and firm performance, considering the team processes when making strategic decisions in the face of complex environments. Measures of TMT strategic decision speed, firm performance, team orientation, and environmental complexity were collected from 29 top management teams of Mexican companies, which represented a total of 118 questionnaires. Pearson correlations among the variables and moderated regression analyses were performed, to test the hypotheses included in the study. Results show a positive relation between environmental complexity and TMT strategic decision speed and between team orientation and speed. Furthermore, results show that there is a positive relation between TMT strategic decision speed and firm performance in the presence of team orientation. In other words, team orientation moderates the relationship between TMT strategic speed and firm performance. Among the implications for managers is that they must ensure effective team processes （e.g., building consensus, active participation, and trust among team members） when making strategic decisions in order for the firm to perform better.

Novel Strategy for Numerically Evaluating Dark-Soliton Jitter in Optical Communications

In this paper, a novel strategy for numerically evaluating the dark-solitonjitter in optical communications is proposed. It is further tested to be consistent with the famousthreshold-value-oriented method for rather larger distances. Then our method is used to calculatethe dark-soliton jitter within arbitrary small distances. An excellent agreement is obtained withthe theoretical predictions based on the nonlinear Schrddinger equation. Our method is alsoapplicable to some more complicated systems such as the dissipative-dispersive system.

Title Evaluation study of teaching-oriented teaching team in colleges and universities based on analytic hierarchy process

You Complying with the school＇s education purpose of training applied talents, in colleges and universities, teaching-oriented teaching team should be read in conjunction with the construction of its evaluating index system as well as the improvement of the operation quality of teaching efficiency. In view of vague characteristic of evaluation, this paper uses analytic hierarchy process to carry on the fuzzy and synthetic appraisal for operation quality of teaching-oriented teaching teams in colleges and universities, reasonably ascertaining the weights of the evaluation indexes and improving the objectivity and accuracy of evaluation.

Exploring Mechanisms for Putting Agriculture Value Chain Oriented Research into Use： Empirical Cases from the Research into Use （RlU） Program

Innovation systems principles are increasingly applied for putting agricultural research into use. This paper presents and analyses three such initiatives located in South Asia, with an aim to generate empirical evidence about practical aspects of the innovation process. These cases seem to suggest that the initial stages of innovation trajectory comprise of social engineering and creation of appropriate architecture of actors, after which need for new knowledge arises and favourable conditions develop for putting such knowledge into use. The cases also present how different types of agencies assume lead roles during different stages of innovation trajectory. The paper urges authorities from policy and practice to consider status of social architecture and the fact that different types of agencies play lead role in the innovation process before planning agricultural innovation initiatives.

Effects of Service Standards Communication and Servant Leadership on Strategic Competence and Customer Orientation

Service standards communication and servant leadership are both important mechanisms to improve an organization＇s service process. Therefore, they are likely to affect strategic competence and customer orientation skills of organizations. In this research, customer orientation and strategic competence are undertaken in relation with servant leadership and service standards communication, using a sample of 106 Turkish firms＇ executive assistants. The results prove that service standards communication and servant leadership have a strong positive relationship with both strategic competence and customer orientation.

Initial alignment for low-cost attitude and heading reference systems

MEMS （micro electro mechanical systems） inertial navigation system ~, Mll＇~3） nas Been WllUly used in robots for its low-cost. The MINS and magnetometers are commonly the component parts of the attitude and heading reference systems （AHRS）, which provide pitch and roll angles relative to the earth gravity vector, and heading angle relative to the north. However, the performance of sen- sors with low cost AHRS is not so good. The gyros are not sensitive enough to observe the earth an- gular velocity, so the traditional technique like alignment algorithm is invalid. The measurements of gyros become useless to determine the initial attitude matrix from navigation frame to body frame. The alignment algorithm is computed by the accelerometers and magnetometers. The process is es- tablished as an optimization problem of finding the maximum eigenvector. Meanwhile the sensitive analysis with respect to the biases of accelerometers is proposed. Then the recursive least squares al- gorithm （RLSA） is introduced. The comparison between the proposed method and RLSA is provid- ed. The results demonstrate its accuracy favorably and verify the feasibility of the proposed algo- rithm.

探讨赣南客家城市公共环境标识设计

本文通过对城市文化与环境标识介绍,指出公共环境标识是城市的重要景观,它集中塑造了城市形象的个性和体现了城市地域文化;提出赣南客家城市的住宅区标识、商业环境标识和交通导向标识要结合客家文化进行创作,凸显赣南客家城市人文形象。公共环境标识"城市公共环境标识设计是指在特定的环境中能明确表示内容、性质、方向、原则以及形象等功能,主要以文字、图形、记号、符号、形态等构成视觉图象系统的设计;