Development of an automatic customer service system on the internet

Most existing network-based customer services heavily rely on manpower in replying e-mails or on-line requests from customers, which not only increases the service cost, but also delay the time for responding the service requests. To cope with these problems, this paper proposes a customer service system, which can automatically handle customer requests by analyzing the contents of the requests and finding the most feasible answers from the frequently asked question (FAQ) database. In the situation that a customer is not satisfied with the reply, the system will forward the request to the appropriate service personnel for further processing. An assistance mechanism has been developed to help the service personnel in finding potential answers from existing FAQ data or creating more appropriate answers. Experimental results on practical applications showed that over 87.3% of users were satisfied with the replies given by the system; therefore, we conclude that the system can significantly reduce the service cost and provide more efficient and effective customer service.     

基于柔性的个性化服务系统的开发过程

实现互联网信息的个性化服务,是Web信息处理中的一个重要研究课题。为了有效解决个性化服务系统动态适应用户需求变化的问题,文章结合柔性的思想,提出基于柔性的个性化信息服务的概念,并给出了实现基于柔性的个性化信息服务系统的具体思路和解决方案。基于柔性的个性化信息服务将成为个性化服务的新模式。     

AnonSURP: an anonymous and secure ultralightweight RFID protocol for deployment in internet of vehicles systems

The Journal of Supercomputing - With the rapid development in world-wide technologies affecting large-scale applications, the Internet of Things (IoT) has gained a lot of attention from such...     

A second generation adaptive autostabilization system for airborne vehicles

The paper is concerned with the initial evaluation of a self adaptive autostabilization system for an airborne vehicle whose dynamic behaviour may vary rapidly and over a wide range during normal operation. The basic design approach could be applied to any airborne vehicle which warranted adaptive control operation, but it is evaluated here in relation to the control of a high performance missile during an 80 second mission. This mission includes a rocket boost phase with accompanying large variations in the model parameters caused by changes in dynamic pressure, mach number, altitude and mass. The adaptive system can be considered as a ‘second generation’ adaptive scheme in the sense that it provides a logical self-adaptive successor to the well known ‘schedule adaptive’ systems used heretofore.     

ESIV: an end-to-end secure internet voting system

Nowadays, with the growing popularity of e-Government services, security of client platforms and violation of citizen e-rights are of great concerns. Since Internet-voting protocols have no control over voter-side platforms, bribery/coercion and breaching vote’s privacy and voter’s anonymity are feasible. In fact, the voter-side platform (voter’s PC) is easily vulnerable to malicious software (cyber-attacks) and can totally breach security of the entire voting protocol. We have proposed ESIV: an end-to-end secure internet-voting system that highly guarantees: voter and server-side platform’s security, verifiability, fairness, resistance to bribery/coercion and voting authorities collusion besides simultaneous election support while preserving eligibility, anonymity, privacy and trust. In addition, we utilize Java Card 3 technology as an independent secure web-server which is connected directly to network in order to send/receive HTTP(S) requests using high-speed interfaces. This technology brings about independence from utilizing any trusted device at voter-side and provides end-to-end security. Finally, an implementation of ESIV is presented and ESIV security features are evaluated.     

Correction to: AnonSURP: an anonymous and secure ultralightweight RFID protocol for deployment in internet of vehicles systems

The Journal of Supercomputing -     

Sonar-based guidance of unmanned underwater vehicles

This paper addresses the problem of the design and coordination of guidance and sonarbased motion estimation algorithms for unmanned underwater vehicles. In the framework of a two-layered hierarchical architecture uncoupling the system's dynamics and kinematics, a couple of guidance laws for approaching a target with the desired orientation and following an environmental feature have been designed with Lyapunov-based techniques. Suitable acoustic-based estimators of the corresponding operational variables have been designed and integrated with the guidance and control system. A finite state machine combined with a suitable interface for event generation allows the coordinated execution of basic guidance and motion estimation tasks to carry out more complex functions. Experimental results of pool trials of a prototype unmanned underwater vehicle executing free-space maneuvering, wall-following tasks and the more complex mission of following the perimeter of the trial pool are reported and discussed.     

Construction of patient service system based on QFD in internet of things

In recent years, as the basic medical science is improved, the prevention and treatment of bedsore have made great progress. However, from the incidence rate of bedsore worldwide, its downward trend is extremely weak, so the nursing of a bedsore is still a major problem in the medical field. To explore the construction of patient service system based on quality function deployment (QFD) in the Internet of Things (IoT) environment, in this study, with the support of IoT technology, deep learning algorithm and QFD method are used to build patient service model to achieve the detection and nursing reminder of patients' physical condition. The basic framework of patient service system is constructed, and the system performance is simulated and analyzed in the simulation environment. The results show that when the data collection and analysis of health monitoring, functional analysis and the functional architecture of IoT are further carried out, it is found that the service system built in this study is more standardized, and it can monitor the physiological data of patients who are bedridden for a long time and cannot turn over in real time, so as to have a preliminary understanding of the patients' physical condition. Through the results of the service system, patients can get personalized care that varies from person to person, thus reducing the pressure of medical staff, and doctors can have a clearer real-time understanding of patients' physical condition. Therefore, in this study, the patient service system constructed has a timely avoidance effect on bedsore and achieves the expected demand, to provide an experimental basis for the service treatment of patients in the later medical industry.

     

基于Android的水产物联服务系统设计与开发

设计开发了基于Android平台的水产物联服务系统客户端,通过分析水产物联服务系统客户端的需求,提出系统设计思想及实现方法。介绍了系统客户端在线监测和远程控制功能的实现方法和步骤,完成客户端软件的设计与开发,实现了水产物联服务系统客户端的功能和需求。     

Neural adaptive appointed-time control for flexible air-breathing hypersonic vehicles: an event-triggered case

Neural Computing and Applications - This work investigates a neural adaptive appointed-time control for flexible air-breathing hypersonic vehicles subject to modeling nonlinearities, flexible...     

VIPER: a general-purpose digital image-processing system applied to video microscopy

This paper describes VIPER, the video image-processing system Erlangen. It consists of a general purpose microcomputer, commercially available image-processing hardware modules connected directly to the computer, video input/output-modules such as a TV camera, video recorders and monitors, and a software package. The modular structure and the capabilities of this system are explained. The software is user-friendly, menu-driven and performs image acquisition, transfers, greyscale processing, arithmetics, logical operations, filtering display, colour assignment, graphics, and a couple of management functions. More than 100 image-processing functions are implemented. They are available either by typing a key or by a simple call to the function-subroutine library in application programs. Examples are supplied in the area of biomedical research, e.g. in in-vivo microscopy.     

Disturbance instabilities in an adaptive system

Two types of disturbance instability of simple adaptive schemes are analyzed. A drift equation shows how stable equilibria are forced to infinity by infrequent but persistent switches of a constant disturbance. The σ-modification proposed by P. Ioannou counteracts these instabilities.     

iGridMedia: The system to provide low delay peer-to-peer live streaming service over internet

Commercial peer-to-peer live streaming services are getting popular nowadays, however, almost all systems target non-interactive applications. Few systems can address how to support interactive applications (such as online auction, person interview, video sharing & commenting, etc.) with peer-to-peer streaming technology. In an interactive channel, all or part of the participants can interact with the presenter or publisher at the source. Unlike existing P2P streaming service, there is different level of delay and synchronization requirements in interactive applications, meanwhile, the participant number in each channel is relatively small but the concurrent channel number is large. With such challenges, how much server bandwidth can be saved in P2P streaming is an interesting problem. We propose a very practical protocol iGridMedia and fully implement it. The basic tradeoff between consumed server bandwidth and the required delay is carefully studied. Simulation and real-world experiments show that our system consumes little server bandwidth under low delay even if the peer churn rate is very high and the peer bandwidth resource index is very limited.     

基于被动响应的车联网混合良性蠕虫

针对车联网移动通信,为防治蠕虫,控制额外网络资源开销,将构建一种基于被动响应的新型车联网混合良性蠕虫。该良性蠕虫在接收到含有蠕虫的报文后,做出在转播该报文的过程中传播自己的被动响应,既能避免主动良性蠕虫发送探测报文带来的额外网络资源开销,又能较好地遏制蠕虫的传播。研究结果为设计实时防治策略对抗蠕虫的破坏性传播提供了理论基础和新的解决方案。     

Legal responsibility of internet service providers: Part 2

Over the past 10 years, the Internet has grown from being a series of networks used to communicate information by a small number of organizations to a data superhighway capable of linking users together in sufficient places in the world to rival the leading international telecommunication carriers and distributing sufficient information to rival the leading publishing houses. Such changes have brought with them enormous benefits. Information can now be shared more quickly amongst a greater number of people than would have ever have been thought possible as late as 1991 when the World Wide Web was first created. This technological change has in turn, brought sociological change. People are now starting to buy books, pay for tickets, give instructions to their banks over the Internet. In time to come, it is reasonable to think that all our day to day tasks, going shopping, speaking to our friends, listening to music etc. will all take place via the Internet.     

自适应过滤算法在社区E-learning的个性化服务系统中的研究

针对学习型社区中的教育需求,在传统算法上加以改进,提出了一种基于向量空间模型的教育资源自适应过滤算法.通过训练算法,提取特征向量和伪反馈建立初始模板,设置初始阈值.然后通过过滤算法根据用户的反馈信息自适应地调整模板和阈值.该算法在执行过程中,不需要大量的初始文本,同时在过滤的过程中可不断地进行自主学习来提高过滤精度.该算法已在个性化知识服务系统中进行验证,结果表明是有效的.     

Acoustic motion estimation and guidance for unmanned underwater vehicles

The problem of navigation, guidance and control of Unmanned Underwater Vehicles (UUVs) is addressed in this paper. A task-function based guidance system and an acoustic motion estimation module have been integrated with a conventional UUV autopilot within a two-layered hierarchical architecture for closed-loop control. The design of the guidance system is based on suitable Lyapunov functions that can handle the different manoeuvres involved in approaching a target. Range and bearing information provided by a pencil beam profiling sonar are processed by an Extended Kalman Filter based algorithm for motion estimation in a structured environment. The resulting Navigation Guidance and Control (NGC) system has been tested on Roby2, the UUV testbed developed at the Istituto Automazione Navale of Italy's National Research Council. The experimental set-up as well as modalities and results are discussed.     

An adaptive terminal guidance scheme based on an exponential cost criterion with application to homing missile guidance

For a linear stochastic system minimizing the expected value of an exponential function of a quadratic yields a control law for the terminal guidance problem which operates linearly on the estimated states. The control gains are explicit functions of the error variance in estimating the state. It is shown that the control gains can be calculated by combining a precalculated matrix determined by a backward integration in time with the error variance calculated forward in time. If the measurement variance is estimated in real time, then the error variance must also be calculated in real time. The control scheme will then be adaptive reflecting the estimated quality of the information. The adaptive control scheme is applied to the terminal phase of a homing missile where the measurement variance is estimated on-line.