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Dynamic checking the integrity of software at run-time is always a hot and difficult spot for trusted computing. In this paper we present a lightweight approach, Control-flow checking using branch sequence signatures (CFCBS), to checking violation of control flow integrity at run-time. Our solution assigns a unique branch sequence signature, which enhances the capability of fault coverage, to each...
When ships run at high speed-cavitation is formed in the bulge area. Because cavitation can make big noises-it will be a threat to the sonar. Cavitation can also destroy the blades of propellers. A method is proposed that underwater cavitation is suppressed through vortex generation. The effect of flow noise and radiated noise from vortex generator on sail hull model is investigated. Through the comparison...
Recent years have seen explosive growth in information security problem. Trusted computing is increasingly used in the fields of information security. The basic idea of trusted computing is different from traditional security method. In other words, system abstracts normal behavior and compare with real-time behavior. Most of the current research focuses on static integrity metrics. However, it is...
“Rebooting Computing” (RC) is an effort in the IEEE to rethink future computers. RC started in 2012 by the co-chairs, Elie Track (IEEE Council on Superconductivity) and Tom Conte (Computer Society). RC takes a holistic approach, considering revolutionary as well as evolutionary solutions needed to advance computer technologies. Three summits have been held in 2013 and 2014, discussing different technologies,...
This paper presents a working distributed SATCOM policy enforcement (SPE) software prototype that protects priority traffic in tactical SATCOM networks. The SPE software is designed for distributed deployment at SATCOM terminals and is compatible with communication security (COMSEC) considerations where mission data originated by applications operating on protected computing systems is encrypted prior...
Parallel micro-manipulators adopt flexible joints and the flexible deformation makes the up-platform move. Considering the counter-force/moment of the flexible joints, we concern the statics of a 6-PSS parallel micro-manipulator with perpendicular structures(PMMWPS), the construction of a relationship model between force output of PZT actuators and outer load on the up-platform, and the definition...
A large number of software reliability prediction models has been developed, and they provide useful results. However, most of these models are not applicable until after system integration testing begins, which is too late for fundamental design changes. In this paper, a software reliability prediction method based on software development process is proposed. Keene's development process prediction...
In this paper, we describe a method for mining both frequent episodes and rare episodes in multiple data streams. The main issues include episodes mining and data streams relationship processing. Therefore, a mining algorithm together with two dedicated handling mechanisms is presented. We propose the concept of alternative support for discovering frequent and rare episodes, and define the semantic...
Aiming at the AC excitation control of high-head impulse hydroelectric generating unit, and in order to improve system reliability, a reconfigurable AC excitation control system for impulse hydroelectric generating unit based on fault-tolerance control is introduced. The reconfigurable scheme and structure of hardware system for AC excitation system is proposed. On the basis of the analysis of main...
Aiming at the software engineering practice of undergraduate, this paper proposes a software development practice platform. This platform effectively combines teaching management with software development process management, and realizes a complete lifecycle management of software engineering practice. As well, based on event ontology, this platform constructs a knowledge base of teaching resources...
Cognitive radio has received considerable amount of attention as a promising technique to provide dynamic spectrum allocation. Wide-band spectrum sensing is the corner stone for cognitive radio to be functional. Most existing commercial sensing solutions lack either the required flexibility or speed. Software-defined radio (SDR) on the other hand offers very high flexibility and therefore becomes...
Under the condition of modern information technology, various universities in China have been exploring how to reform the teaching content, teaching method, teaching means and teaching mode on higher mathematics. In recent years, according to the talent training goal of our university, we have carried out a series of beneficial exploration and practice such as updating the corresponding teaching content...
The two sets of management systems formed by the project team built under the matrix organization structure, vertically and horizontally are not only to the benefit of the centralization of leadership, but also to the cooperation and complement of team members. The key of the problem is how to choose the suitable members for the project team according to the needs of different projects. Based on this,...
An automatic testing system for thermal batteries based on LabVIEW is introduced in this paper. Full automatic testing process is realized and the system has high precision, high speed and good adaptability in different type of thermal-batteries.
The reason of steering torque fluctuation and its solution are investigated based on simulation software ADAMS and the practical problem of a specific Geely's vehicle in this paper. The above process is programmed into useful software in combination with the previous experience. Also the automatic optimization of steering system can be achieved in order to eliminate torque fluctuation at the early...
The cruise pre-warning system is established based on millimeter wave radar. The cruise control system is preliminarily discussed in this paper. First, a braking model is constructed according to classical braking theory. And then identification and control (I&C) module is programmed by Matlab/simulink software. Moreover, multiple objects behind a car detected by radar are identified and controlled...
Two new Ka-band traveling wave tubes (TWTs), included a narrow band 40W with 50% efficiency and a 26.5-40GHz 100W with 30% efficiency, has been designed and tested at the Institute of Electronic, Chinese Academy of Sciences (IECAS).
Cloud computing is a development and integration result of distributed processing, parallel processing and grid computing technologies. It helps the enterprise switch the resources according to the applications, accesses computer and storage systems according to the demand. And it provides a new computing model for enterprise informatization. This paper introduces items realted to cloud computing:...
This study develops and implements a SoC-based HW/SW (Hardware-Software) codesign for an intelligent diagnostic system. To improve the efficiency of the VLSI (Very Large Scale Integration) design process, the components of the intelligent diagnostic system are designed in the form of SIP (Silicon Intellectual Property) modules. The SIP modules, including the CPU module, the GPIO (General Purpose I/O)...
This paper introduces the current practices of building the network of institutional repositories in Chinese Academy of Sciences (CAS), which called CAS IR Grid. Firstly, it presents and discusses its architecture. Then it discusses issues related to its implementation and promotion activities, which covers mainly the development of IR software package based on open source software DSpace, establishment...
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