Earticle

The goal of the article is to solve the problems of training the students' practice abilities in colleges’ entrepreneurship practical teaching, to develop students entrepreneurial practice ability training cloud platform with the use of kinds technology means such as cloud computing, internet technology, embedded technology and network communication, considering the features of school entrepreneurial practical teaching in school. The platform is constituted by many modules such as entrepreneurial assessment, business school, business hall, entrepreneurial capability evaluation, career plan, career decision analysis, business simulation management, etc. Adopting practical training in human- computer interaction model, the platform simulates kinds of problems during their starting business. Platform includes various modules such as disciplines different training system, evaluation system, certificates, cooperating between colleges, employment tracking and business guidance. It effectively strengths the management flexibility of students practical business ability training cloud platform, carry forward the practical teaching of starting business and co-building the lessons of starting business. It’s helpful to improve students’ awareness, to master the skills of running business, to enhance their abilities of choosing a job.

As the growth of the Internet has given consumers an access to unprecedented amounts of digital contents from almost anywhere, thanks to a variety of smart devices, it has raised concerns about the safety of personal data with current digital content transaction model when purchasing the online digital contents. Smartphone use is increasing rapidly and it is affecting every aspect of people’s lives and working environment. Thus, smartphone has become an essential personal tool and individuals have much dependence on it. We examine the security issues of smartphone and smart work environment in terms of describing the threats and problems with respect to privacy information protection. In order to solve this problem, we propose a transparent and reliable online distribution infrastructure system equipped with improved protection of consumer rights, supplier revenue, and enhanced prevention of copyright infringement. To be precise, this secure digital content transaction system enables N-screen based consolidated authentication model from various smart devices to process transaction confirmation anonymously so that consumer’s personal information can be protected. In addition, this anonymous authentication technology between user and service provider also allows possible security threats to be traceable by using traceable anonymous technology.

In this paper, a motion recognition scheme using acceleration sensor of smart devices is proposed and is experimentally analyzed with a server. Sensor data of 3-axis acceleration of a smart device is collected and 2nd order Butterworth low pass filter (LPF) is applied to reduce noise. With the collected sensor data, the various motions such as falling, sitting, lying and walking are distinguished one another. Based on the fixed threshold by the probability approach, falling motion is especially distinguished from other motions as an indication of emergency situation. A server displays current states and alarm states. The proposed scheme is evaluated through experiments. The results of experiments show that the accuracy of motion recognition is more than 94% in all the motions. As for a falling recognition, the accuracy is 96%.

This study proposed a novel way to calculate Basic Probability Assignment(BPA), which is crucial in the data fusion. The study mapped sensing signal with a linear discriminant function analysis and assessed the sizes with time. This was beneficial to get a clue for context inference with using the Dempster-Shafer Theory and to determine BPA based on the size changing of mapping data in time intervals. The study provides with the way of context inference for fast detecting a local event that affects the whole area.

Non-contact hydraulic seal (clearance seal) decrease the leakage by the small clearance between the seal. Non-contact seal is the seal form is very simple. The sealing effect depends on the size of the clearance and pressure difference, the length and parts of the sealing surface quality. Among them, the clearance size of the greatest impact on the sealing performance. The hydraulic systems sealing mathematical and computational fluid dynamics(CFD) model are presented to estimate the impact of eccentricity ratio, seal clearance and pressure are has to hydraulic force and leakage. These factors should be considered in the practical engineering.

There are many game simulators users can enjoy indoors. An indoor golf game simulator is a typical example of such indoor game simulators. Usually, players experience some inconvenience when they get together to use the same game console. In this paper, a communication system to support a ubiquitous game is proposed. For ubiquitous games, players do not need to get together to use the same game console. Instead, they can enjoy the game together while being in different places so long as they are playing at the same time. Because players might use different kinds of game consoles in different places, there needs to be an interoperable communication system for the games. In this paper, therefore, an XML based communication scheme is proposed and XML documents are defined to represent all the information generated by the game simulator and to process the game progress.

Nowadays, researches on Smart Environments represent interesting challenges in pervasive computing. Indeed, remote services, wireless networks and miniaturized devices are becoming more and more diverse and affordable, as well as essential in our daily activities. Unfortunately, the most of these handled devices and services are rather isolated and cannot easily cooperate between each other. Moreover, there is a clear lack of well accepted standards and platforms to help integrate them into useful process- oriented composite applications. As a consequence, services composition and orchestration research is exploring ways to combine available services and smart components to work together for solving complex problems such as energy control, security, health care, etc. The present paper aims to explore the previous challenges in the context of controlling Smart Residential Environments (SRE). The proposed solution consists first in defining a generic ontology of such environments and then in using it within a Domain Specific Language (DSL) for designing and controlling different environment processes.

An important step towards reducing humankind’s reliance on unsustainable energy is by improving energy efficiency in a home or building. One solution to energy-intensive homes is to take environmental measurements in-house that can alert the owner of what rooms and conditions have high-energy waste (e.g., unnecessary air-conditioning or lighting). This paper describes the development and performance of a low-cost, easy-to-use and easy-to-maintain wireless sensor network suited for home environmental monitoring. Low-cost and ease-of-use are achieved through a single open-source software element developed for use on a home computer and a low-cost sensor node element that can be simply placed and turned on. Ease-of-maintenance is achieved by prolonging the sensor's battery life and minimising user interaction. Data is retrieved from the sensor and aggregated to central location automatically when the home PC/sink node is turned on. There is no further interaction is required by the user beyond initialising the application.

The successful implementations of the concepts of Service-Oriented Computing (SOC) in smart home in the recent years and the advantages it provide in the smart home development have proved its importance. However, efforts are still needed for service-oriented design of smart home, especially at the architectural level. Although a number of layered architectures are proposed for smart home in the past, most of them are related to middleware or hardware architecture design or explain the implementation details. A three-layered service-oriented architecture for smart home is proposed in this paper. On the one hand, the proposed architecture provides the facility to model the smart home in terms of devices and the services they provide, while on the other it provides the mean of communication to heterogeneous devices present in a smart home. To show the effectiveness of the proposed architecture, it was applied on “Food cooking and ordering” scenario in a smart home. The results showed that the proposed architecture helped in the increased understandability of the smart home design.