检索结果-内蒙古大学图书馆

2nd International Conference on Technological Ecosystems for Enhancing Multiculturality, TEEM 2014

作者： Cota, Christian Xavier Navarro Díaz, Ana Isabel Molina Duque, Miguel Ángel Redondo Faculty of Engineering Architecture and Design Autonomous University of Baja California Ensenada Mexico Department of Technologies and Information System University of Castilla-La Mancha Ciudad Real Spain

ISBN: (纸本)9781450328968

This paper presents the analysis of recent research on mobile learning and usability areas, applying a systematic mapping study. It also presents the main focus adopted by each publication, the types of mobile device and operative systems. The aim is also to understand the tendencies and needs in the fields of design and evaluation of the m-learning systems. Results demonstrate that research in the area has grown significantly since the 2012, and due to the recent boom of mobile devices in education, we believe that the number of studies will continue to grow in the following years. Also we identify a necessity when we see that not all the mlearning applications have used usability tests, we did not find guidelines or frameworks to evaluate them either. With this results and tendencies, we propose the creation of an evaluation framework for m-learning applications, considering pedagogical usability and user interface usability, to improve the quality of mlearning applications.

关键词： Learning systems

来源：评论

学校读者我要写书评

暂无评论

Blind user requirements to support tactile mobility

Blind user requirements to support tactile mobility

引用

International Workshop on Tactile/Haptic User Interfaces for Tabletops and Tablets, TacTT 2014

作者： Conradie, Peter Mioch, Tina Saldien, Jelle Department of Industrial System and Product Design Faculty of Engineering and Architecture Ghent University Graaf Karel de Goedelaan 5 Kortrijk8500 Belgium TNO Kampweg 5 Soesterberg3769 DE Netherlands

Various innovations have been identified in assistive technology for the visually impaired. One of these innovations are systems that present feedback and information in a tactile format. These tactile systems have the potential to help the visually impaired, but there is little attention to how it can be combined with other assistive technology. In this research, we present a set of user requirements for tactile systems, focusing on the needs of the visually impaired. This is done by telephone, personal, and group interviews. As a result, we identify three themes related to the use of non-visual tactile assistive devices for blind persons: 1) context of use, 2) trust issues, and 3) user interaction. Our recommendations include focusing on a devices that solve very specific mobility problems, being transparent with users about system status such as battery life and accuracy, and limiting output to prevent overload.

关键词： Assistive technology

来源：评论

学校读者我要写书评

暂无评论

Privacy protection in data sharing: Towards feedback based solutions 14

Privacy protection in data sharing: Towards feedback based s...

引用

8th International Conference on Theory and Practice of Electronic Governance, ICEGOV 2014

作者： Bargh, Mortaza S. Meijer, Ronald Choenni, Sunil Conradie, Peter Creating 010 Rotterdam University of Applied Sciences Rotterdam Netherlands Research and Documentation Centre Ministry of Security and Justice The Hague Netherlands Industrial System and Product Design Faculty of Engineering and Architecture Ghent University Ghent Belgium

ISBN: (纸本)9781605586113

Sharing data is gaining importance in recent years due to proliferation of social media and a growing tendency of governments to gain citizens' trust through being transparent. Data dissemination, however, increases chance of compromising privacy sensitive data, which undermines trust of data subjects (e.g., users and citizens). Data disseminators are morally, ethically, and legally responsible for any misuse of the disseminated data. Therefore, privacy enhancement techniques are often used to prevent unsavory disclosure of personal data. Data recipients, nevertheless, are sometimes able to derive (part of) privacy sensitive information by, for example, fusing the shared data with other data. This can be considered as a sort of data misuse. In this contribution, we investigate how having a feedback from data recipients to data disseminators is instrumental for detecting such data misuses (i.e., privacy breaches). We also elaborate on using feedback for defining and deriving context-dependent privacy-preferences of data disseminators. In this case, feedback acts as a means of privacy prevention. We provide a categorization of existing feedback based solutions and, in addition, describe our implementation of a feedback-based data dissemination solution in an eGovernment setting. Finally, we elaborate on the importance of real-time partial feedback mechanisms, as a rising and promising solution direction for preserving privacy. Copyright 2014 ACM.

关键词： Sensitive data

来源：评论

学校读者我要写书评

暂无评论

Variability management in product lines of safety critical embedded systems

Variability management in product lines of safety critical e...

引用

International Conference on Embedded systems (ICES)

作者： Stephan Baumgart Xiaodi Zhang Joakim Fröberg Sasikumar Punnekkat E&E System Architecture Department Volvo Construction Equipment Eskilstuna Sweden School of Innovation Design and Engineering Mälardalen University Västerås Sweden

The product line engineering approach is a promising concept to identify and manage reuse in a structured and efficient way and is even applied for the development of safety critical embedded systems. Managing the complexity of variability and addressing functional safety at the same time is challenging and is not yet solved. Variability management is an enabler to both establish traceability and making necessary information visible for safety engineers. We identify a set of requirements for such a method and evaluate existing variability management methods. We apply the most promising method to an industrial case and study its suitability for developing safety critical product family members. This study provides positive feedback on the potential of the model-based method PLUS in supporting the development of functional safety critical embedded systems in product lines. As a result of our analysis we suggest potential improvements for it.

关键词： Safety Unified modeling language Embedded systems Analytical models Standards Visualization

来源：评论

学校读者我要写书评

暂无评论

Vibration-modal analysis model for multi-span pipeline with different support conditions

引用

Computer Modelling and New Technologies 2014年第5期18卷 7-13页

作者： Liu, Jun He, Xing Liu, Qingyou Naibin, Jiang Chen, Huang School of Civil Engineering and Architecture Southwest Petroleum University Chengdu China Modern Design and Simulation Lab for Oil and Gas Equipment's Southwest Petroleum University Chengdu China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China Chengdu China

Vibration characteristics analysis is important in the design of multi-span pipeline with different support conditions. In order to analyze the natural frequency and the vibration modal of the multi-span pipeline, a matrix transfer method is proposed in this paper. With the multi-span pipeline divided into single-span pipes, the transmission formulas for the deflection, angle, bending and shear between two adjacent spans are deduced, in combination with the Krylov function solution of the free vibration equation for the single-span pipe, and the constraint condition between the two adjacent spans of the multi-span pipeline. According to the boundary conditions on the starting and ending spans, the natural frequency equation and the vibration modal function between two adjacent spans of the multi-span pipeline are presented. The FORTRAN program based on the above principle is written, and the natural vibration frequencies and the vibration modals of two typical multi-span pipelines are investigated and compared with the results from ABAQUS. It is shown that the model presented in this paper is efficient in the analysis of multi-span pipeline and has the advantages of high computational efficiency and convenience for engineering practice application.

关键词： Natural frequencies

来源：评论

学校读者我要写书评

暂无评论

Industrial Challenges to Achieve Functional Safety Compliance in Product Lines

Industrial Challenges to Achieve Functional Safety Complianc...

引用

Euromicro Conference on Software Engineering and Advanced Applications (SEAA)

作者： Stephan Baumgart Joakim Fröberg Sasikumar Punnekkat E&E System Architecture Department Volvo Construction Equipment Eskilstuna Sweden School of Innovation Design and Engineering Mälardalen University Västerås Sweden

Developing safety critical products demands a clear safety argumentation for each product in spite of whether it has been derived from a product line or not. The functional safety standards do not explain how to develop safety critical products in product lines, and the product line concept is lacking specific approaches to develop safety critical products. Nonetheless, product lines are well-established concepts even in companies developing safety critical products. In this paper we present the results of an exploratory study interviewing 15 practitioners from 6 different companies. We identify typical challenges and approaches from industry and discuss their suitability. The challenges and approaches brought out by this study help us to identify and enhance applicable methods from the product line engineering domain that can meet the challenges in the safety critical domain as well.

关键词： Safety Companies Interviews Standards Software Context Industries

来源：评论

学校读者我要写书评

暂无评论

Visualization of disaster recovery process based on a time-series assessment of urban environment

引用

AIJ Journal of Technology and design 2013年第43期19卷 1011-1016页

作者： Kawakubo, Shun Ikaga, Toshiharu Murakami, Shuzo Dept. of Architecture Faculty of Engineering and Design Hosei Univ. Japan Dept. of System Design Engineering Faculty of Science and Technology Keio Univ Japan Institute for Building Environment and Energy Conservation Japan

A time-series assessment of urban environment was carried out by using "CASBEE-City" tool in Kobe city to visualize the disaster recovery process. As a result of the assessment, it was revealed that the score for quality of Kobe city calculated by the tool got drastically worse soon after the Great Hanshin-Awaji Earthquake in 1995. However, the score for quality of Kobe city has gradually recovered after the earthquake and has improved to the current position along with the progress of the reconstruction.

关键词： Time series

来源：评论

学校读者我要写书评

暂无评论

Sort-based relay selection algorithm for decode-and-forward relay system

引用

Science China(Information Sciences) 2013年第2期56卷 41-48页

作者： XIE Gang LIU YuanAn GAO JinChun LI XingZheng Beijing Key Laboratory of Network System Architecture and Convergence Beijing University of Posts and Telecommunications School of Electronic Engineering Beijing University of Posts and Telecommunications Division of Research China Mobile Group Design Institute Co.

In this paper, a sort-based relay selection algorithm is proposed for decode-and-forward wireless relay systems. The proposed algorithm can reduce computational complexity and system overhead in the relay selection for practical decode-and-forward wireless relay systems with multiple sources and multiple relays. This would be a very important improvement. Firstly, the sufficient and necessary conditions for a relay to be feasible to a source are derived. By adopting relay transmission via its feasible relay, the source can improve channel capacity compared to direct transmission. Then, a sort-based relay selection algorithm is proposed based on the sufficient and necessary conditions. In the proposed algorithm, each relay makes decision on its feasibility individually, but the final source-relay paring decision is made in a centralized manner. Simulation results show that the proposed algorithm can provide considerable system performance improvement over the existing algorithm. Especially at low signal-to-noise (SNR) region, the performance of the proposed algorithm almost reaches the optimal one.

关键词： relay selection decode-and-forward relay cooperative communication wireless relay system

来源：评论

学校读者我要写书评

暂无评论

Kinematics and Dynamics Analysis of a Quadruped Walking Robot with Parallel Leg Mechanism

引用

Chinese Journal of Mechanical Engineering 2013年第5期26卷 881-891页

作者： WANG Hongbo SANG Lingfeng HU Xing ZHANG Dianfan YU Hongnian Parallel Robot and Mechatronic System Laboratory of Hebei Province Yanshan University Key Laboratory of Advanced Forging & Stamping Technology and Science of Ministry of Education Yanshan University Xi’an University of Architecture and Technology Science and Technology Research Institute Yanshan University School of Design Engineering and ComputingBournemouth University

It is desired to require a walking robot for the elderly and the disabled to have large capacity,high stiffness,stability,***,the existing walking robots cannot achieve these requirements because of the weight-payload ratio and simple ***,Improvement of enhancing capacity and functions of the walking robot is an important research *** to walking requirements and combining modularization and reconfigurable ideas,a quadruped/biped reconfigurable walking robot with parallel leg mechanism is *** proposed robot can be used for both a biped and a quadruped walking *** kinematics and performance analysis of a 3-UPU parallel mechanism which is the basic leg mechanism of a quadruped walking robot are conducted and the structural parameters are *** results show that performance of the walking robot is optimal when the circumradius R,r of the upper and lower platform of leg mechanism are 161.7 mm,57.7 mm,*** on the optimal results,the kinematics and dynamics of the quadruped walking robot in the static walking mode are derived with the application of parallel mechanism and influence coefficient theory,and the optimal coordination distribution of the dynamic load for the quadruped walking robot with over-determinate inputs is analyzed,which solves dynamic load coupling caused by the branches’ constraint of the robot in the walk *** laying a theoretical foundation for development of the prototype,the kinematics and dynamics studies on the quadruped walking robot also boost the theoretical research of the quadruped walking and the practical applications of parallel mechanism.

关键词： walking robot parallel leg mechanism kinematics dynamics over-determinate inputs

来源：评论

学校读者我要写书评

暂无评论

Downlink Scheduling and Rate Capping for LTE-Advanced Carrier Aggregation

引用

Communications and Network 2013年第3期5卷 1-5页

作者： Mieszko Chmiel Jin Shi David X. Zhou LTE System Design & Architecture Nokia Siemens Networks Beijing China

Long Term Evolution (LTE) Carrier Aggregation (CA) was introduced by the Release-10 3GPP specifications. CA allows aggregation of up to 5 cells for a terminal;both downlink (DL) CA and uplink (UL) CA are supported by the 3GPP specifications. However, the first commercial deployments focus on the aggregation of two cells in the downlink. The benefits of LTE CA are increased terminal peak data rates, aggregation of fragmented spectrum and fast load balancing. In this paper, we analyze different strategies of DL scheduling for LTE CA including centralized, independent and distributed schedulers, we provide the corresponding simulation results considering UE data rate limitations and different traffic models. Also, we compare the performance of a single LTE carrier with LTE CA using the same total bandwidth.

关键词： Long Term Evolution Carrier Aggregation Scheduling Downlink Bandwidth

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：