Optimization with Scilab, present and future

Due to the rapid increase in the amount of data that people need to deal with computing tasks, such as distributed computing, cloud computing and other technologies are more and more concerned by most people. In recent years, with people's attention to information security and personal privacy protection, cloud computing security has gradually become the focus of researchers. In the cloud computing environment, massive distributed data storage and management and data centralization autonomy can control the data mechanism, and distribute management of redundant data and transaction processing. These management and application are generally through the distributed database for actual operation, from the user's point of view, the access process to the distributed database is transparent. In fact, from the user's point of view, a single distributed database is essentially a combination of a group of databases stored on multiple computers. This paper studies the distributed data processing system based on cloud computing technology.

A responsive smart product can connect with a network, to sense and gain awareness as well as to react to input signals and align with them. This paper describes the product requirements gathering process to assist the development of a responsive bathroom mirror connected with emergency centres for elderly support. The rapidly increasing ageing population has led to increased number of elderly people living alone. In this sense it is essential to pursue strategies that can guarantee ageing in place safely, independently, and with confidence, and improve the quality of life of those who wish to continue living in their own living environment. Driven by recent advances in technology, the development of smart products that can respond to human needs and wants, and to improve everyday tasks, became a tangible reality. When smart products are developed for senior citizens daily support, responding to what their expectations are and whether they are satisfied with them, and what opportunities and worries they associate with their age, overcoming technological barriers from the user's point of view, it will have a huge impact on the communities: older people, their families, and the healthcare system. To address these issues, this paper provides a systematic identification of product requirements, technological and from user’s point of view, for the future development of a responsive mirror. Towards a holist development approach, first, existing studies on smart products, research on related technological trends and development were reviewed, supplemented with case studies of existing smart products for healthcare. The first list of requirements was developed from this research. Additionally, studies and public statistics were analysed to confirm the relation between domestic environment and high levels of injuries, as well as places and situations of the accidents that have high impact on health and well-being. Smart products typically have a strong sense of technology. Being a mirror a product that is used in a daily basis, it is mandatory to gather simultaneously the user’s preferences and technological requirements. Based on a systematic approach, a Kano Model was developed; requirements were synthesized and organized within a comprehensive user requirement framework delineating three levels of needs: basic, performance and delight. Research from the field of smart products demonstrated that there are several technological trends that can be applied to mirrors, that there are smart mirrors for applications in automobile and fashion industries. Nevertheless, examples of these products in healthcare remains limited. Additionally, recent technological developments enable the development of a responsive smart mirror that not only serve as an interface for displaying information but can predict the presence of the user.

The characteristics of flat UI design for mobile t erminals, compared with quasi-physical design style, are introduced. The influence and significance of these design styles on interaction are discussed in this paper. The driving factors of flat design which is prevalent in mobile terminals are also analyzed. Based on these discussions, the application and value of flat UI design in mobile devices from the point of users' views and the future developing tendency are be studied in this paper.

From Rio to Iragua--sustainability versus efficiency and equity for preventive health interventions.

Building an e-learning platform based on the user's point of view is getting the user to use the system. In this study, value co-creation is adopted from service science theory that involves users in service processes. The purpose of this paper is to use the means-end-chain (MEC) methodology by identifying the favourable attributes, consequences, and values from a teacher's point of view. The relationship among these items would build a ladder and lead to the purpose of the study. This study adopted the hard laddering - Association pattern technique (APT) method to develop the implication matrix, frequency table, and hierarchical value map (HVM). The study is aimed at vocational teachers as they are one of the primary users of the e-learning platform. The significance of this study is to help identify the co-creation value based on critical features on an e-learning platform. The results discovered that teachers develop eight important values led by self-fulfilment, sense of accomplishment, and responsible with the attributes in e-learning, which motivate them to continue using the platform for teaching and learning.

Open source software development and their uses becoming more popular and increasing rapidly due to tremendous growth in the field of internet and network technologies. Since the mid 1990s, there has been a surge of interest among academics and practitioner in open source software. It has been always a challenging and interesting to know the dynamics of bug in the software. In software different types of bugs are laying which are not similar in nature. Some of them may be complex from the user's point of view while others may be complex from the developer's point of view. In this paper, we proposed a generalized reliability growth model to determine different category of bugs lying in open source software. The failure intensity of the proposed model is not only dependent upon residual bug content but also on power function of testing time. The proposed model also caters the huge user growth in case of open source software. The model is validated using several real software failure data sets collected from open source software development websites. We have also shown goodness of fit curve along with comparison criteria like MSE, R2, Bias, Variation and Root mean squared error to validate the proposed model.

최근 무선망 수요가 급증함에 따라 무선 단말기의 전원 효율을 높이고 망의 오버헤드를 줄여야 하는 문제가 대두 되었다. 이를 위해 국내의 차세대 IP 패킷 무선망으로써 연구되고 있는 HPi(High Speed Portable Internet) 망에서의 페이징 기법 및 공유 AP를 갖는 페이징 영역 구조를 제안한다. HPi 망에서의 페이징 기법 적용은 dormant 상태 단말의 지역적 이동에 따른 등록 절차 비용 감소 및 공유 AP 설치로 인한 단말의 위치보고 비용의 감소라는 이점을 얻을 수 있다. 본 논문에서 제안한 기법은 단말 사용자 측면에서의 전원 효율을 높이는 장점과 관리자 측면에서의 망 오버헤드 감소 및 단말 이동패턴 변경에 따른 공유 AP의 손쉬운 재설정 이라는 이점을 가져온다. As the demands in a wireless network are recently increasing, it is necessary to promote the power efficiency of a wireless terminal, and to reduce the overhead of a network. To resolve such problems, we propose the paging technology and the structure of paging area with the joint access point in HPi (High-speed Portable Internet) network, which is being studied as the domestic next-generation IP packet data network. The application of the paging technology to the HPi network possesses the advantage of reducing the registration cost while a terminal in dormant state moves around, and the reporting cost of the terminal's location by the joint access point. The technology suggested in this paper causes the advantages that it promotes the power efficiency in user's point of view while it reduces the network overhead and makes the easy rearrangement of joint APs according to the changes of users' moving pattern in the network manager's point of view.

Traditionally, when designing robust transportation systems, one wants to increase the functionality of the system in presence of failures, even though they might not work optimally when no failures occur, which is the usual case. In this paper we make an attempt to integrate robust network design and line planning without decreasing the efficiency of the system when no failures occur. Therefore, extra costs must be met (price of robustness). Two different concepts of robustness are considered: one from the user's point of view, which aims at minimizing total travel time, and one from the operator's point of view, which aims at minimizing extra costs, both assuming possible disruptions.

A scientific database can be a powerful tool for biologists in an era where large-scale genomic analysis, combined with smaller-scale scientific results, provides new insights into the roles of genes and their products in the cell. However, the collection and assimilation of data is, in itself, not enough to make a database useful. The data must be incorporated into the database and presented to the user in an intuitive and biologically significant manner. Most importantly, this presentation must be driven by the user's point of view; that is, from a biological perspective. The success of a scientific database can therefore be measured by the response of its users - statistically, by usage numbers and, in a less quantifiable way, by its relationship with the community it serves and its ability to serve as a model for similar projects. Since its inception ten years ago, the Saccharomyces Genome Database (SGD) has seen a dramatic increase in its usage, has developed and maintained a positive working relationship with the yeast research community, and has served as a template for at least one other database. The success of SGD, as measured by these criteria, is due in large part to philosophies that have guided its mission and organisation since it was established in 1993. This paper aims to detail these philosophies and how they shape the organisation and presentation of the database.

Capturing a consistent, complete and valid set of requirements is a critical prerequisite for designing systems that are useful and usable. One popular technique for capturing the main chunks of functionality from the user's point of view is the specification of use cases by the development team. While there may be agreement at this high level, there are often differences in what each stakeholder perceives as the steps of the use case description. Often the description reflects the views of one or a few dominant individuals resulting in incomplete use case descriptions that do not represent the requirements of the whole group. In our approach, known as RECOCASE as we use a CASE tool to assist requirements reconciliation, the group identify and then asynchronously capture multiple requirements viewpoints. The use case descriptions are entered in natural language and automatically processed by our system to produce a concept lattice. The concept lattice is used to reveal common ground and differences between the stakeholders. Our group process enables conflicts to be identified and resolved, where possible, using our negotiation strategies and resolution operators.

Participation in electronic forums: Implications for the design and implementation of collaborative distributed multimedia

It is shown that a small number of oil viscosity grades should satisfy the lubrication requirements of most industrial plants. Problems with lubricating oil additives are discussed and it is concluded that such materials should only be used where proven essential.

One of the most important aims of next generation mobile communications systems (systems beyond 3G) is to achieve the inter-operation of heterogeneous networks such as WLAN, 3G and digital video broadcasting (DVB). Interworking among these networks would allow network operators to cooperate to provide new value added services which they could not individually provide in a satisfactory manner. These services should be provided in a cost effective, reliable and secure manner. The paper addresses handover between WLAN and UMTS. We propose a network architecture, and address seamless handover issues from the user's point of view. Moreover, the paper explains how two popular mobility protocols (SIP and Mobile IP) may each be deployed in this scenario. Performance of SIP and Mobile IP in similar situations are compared, in consideration of network characteristics such as available bandwidth (throughput), overhead, end-to-end delay, latency and packet lost rate. Finally, alternative solutions such as SIP-based approach, hybrid solution, integrated solution and multilayer solution are examined and compared.

The world energy consumption is increasing and adjustable speed drives will account for a large portion of all motor drives. Insulated gate bipolar transistors and similar fast switching PWM drives will continue to be used. While these drives are reliable and offer excellent control response, there are some drawbacks. An overview of some problems with compatibility between drives, motor cables and motors is given with suggested remedies from a user's point of view.

In the context of sustainable and green chemistry, the ‘benign by design’ concept requires information on a compound's biodegradability to be available at an early stage, even before synthesis. Computer models for predicting biodegradation therefore are increasingly important. In this work various approaches to predict aquatic aerobic biodegradation are critically reviewed from a user's point of view. Some fundamental problems in modeling biodegradation are discussed, as well as more general issues in modeling of compound properties by quantitative structure–property/activity relationships (QSPR/QSAR).