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Requirement Engineering is now established is the most critical phase in software engineering and development due to the fact that success or failure of any project depends greatly on wise and correct decisions made and strategies adopted during this phase. However, the great irony is that most of the requirement engineering still relies on outdated, manual and flawed strategies of past decades. The...
The ongoing transition from traditional plan-based waterfall development models to iterative and software development has created a need for redefinition of software requirements engineering. One of the key driving factors for success in software development is achieving a shared vision of the projects' goals and constraints already early in the process. Having a shared product vision defines the...
Software Engineering is concerned with systematic delivery of products and services which meet the requirement posed by system stakeholders. One better way to make requirements from stakeholders (problem domain) understandable to developers (solution domain) is to transform such requirements into features. These features can be seen to interact with each other to perform system functionality according...
Virtualized servers are attracting considerable attention in the field of information technology because of the reduction of business costs and number of servers associated with their implementation. However, the types of business applications suitable for virtualization are still unclear. In addition, information systems issues should be considered to be essential for task performance and achieving...
This paper presents a significantly improved strategy for accelerating the method calls in the REALJava coprocessor. The hardware assisted virtual machine architecture is described shortly to provide context for the method call acceleration. The strategy is implemented in an FPGA prototype. It allows measurements of real life performance increase, and validates the whole co-processor concept. The...
Liquid crystal display technology requires the spectral power distribution measurement of the displayed RGB colors. Such measurement tasks are typically resolved by means of spectrophotometers and the measured data is used in several applications. The costs of color management methods have been decreasing recently mainly because of the reduced costs of spectrophotometric equipment. However the hardware...
Intrabody communication using the human body as the transmission channel enables low-power wireless communication within a body area network. Using intelligent nodes it is expected that condensed information packets are transmitted between nodes reducing the data rate to a few kbit/s. This paper investigates the practical low-frequency transmission quality using capacitive signal coupling via custom-made...
Information technologies are a helpful tool in the teacher-student interaction. Teachers can give support to students without the need for an 100% in person contact, which is needed in the context of Bologna paradigm. For many activities, no schedule match is needed, since students access to resources and send requests to teachers whenever they need. In this paper the work of two Electrical Engineering...
Supporting technology is really useful in control education. In fact, virtual instrumentation is one of these technologies that can offer new possibilities in education process. In this paper, we describe how designing, modeling, analyzing, and prototyping can be done using LabVIEW on intelligent control systems. For this, we report the projects actually developed at ITESM university in Mexico and...
As researchers push for Exascale computing, one of the emerging challenges is system resilience. Unlike fault-tolerance which corrects errors, recent reports suggest that resilient systems will need to continue to make progress on an application despite faults. A first step in developing a resilient system is to have robust, scalable system monitoring. The work described here presents a novel, minimally-invasive...
This works mainly introduces the main equipments and control system of bar cooling bed, the implementation, the key control of the system and the common solution to the problem. The system includes PLC, DC drives, AC variable frequency speed control, hydraulic systems, the two-level network: basic automatic level (Genius Bus) and the upper monitor (EtherNet).
Used fixed equal step cubic spline interplolation in non-circular machining, the influence of acceleration may be too strong to cause burns and vibration. To suppress the acceleration influence of feed axis, take cam grinding as an illustration, first derived acceleration and its change from the cubic spline function, then adopting the method of off-line fuzzy model logical reasoning combined with...
In order to study the displacement ventilation system in winter, TVOC concentration field, velocity field and temperature field are simulated by FLUENT software which use standard k-ε turbulence model combined with wall function method. The study conclude that in winter displacement ventilation can be achieved by using ceiling radiant heating system and warm air-curtain which is set in the cold wall.
This paper presents a cost-effective approach to design an embedded autopilot system for a 4-rotor aerial vehicle. The system is targeted for autonomous control research, and it consists of an onboard system and a ground station. The onboard system interfaces with the vehicle and provides data link for sensor measurements and control data. The ground station provides a user-friendly interface for...
This paper introduces definition and characteristics of building information model (BIM), analysis and compares the three typical solutions of BIM in present. The lifecycle management of construction project based on BIM is analyzed thoroughly, and thought that the usage of BIM may solve the problem of information demand in the lifecycle management of construction project, and changes the way of information...
One of oldest and best-known methods used in constructive testing of smaller programs is the symbolic program execution. It is partly similar to method of simulation of computer function, but differs in aim. One of ways to prove whether given program is written correctly is to execute it symbolically. Aim of this paper is to test ramified program structure using single symbolic set of inputs, in one...
Time synchronization is one of the key points in distributed real-time computer system. At first, a time synchronization method under 1PPS signal is put forth. Secondly, two kinds of relevant synthetic disturbance are analyzed, and time synchronization logic is studied to cope with the disturbance. Arena software is chosen to model and simulate the time synchronization procedure. At last, the whole...
In order to settle the present problem of lack of laboratory equipment in colleges, it supplies a method of creating remote virtual laboratory with taking a specific experiment for example: it programs the computer with the software LabVIEW on the base of connecting hardware and computer well, and then use Web publish and DataSocket in LabVIEW to make the remote control functions of experiments true...
The system focused on the detection of integrated multi-parameter in the fermentation industry. We can achieve parameters of glucose, lactic acid and glutamic acid just by one sample and one sensor. The ancillary instrumentation based on m16(AVR) revealed the values of multi-parameter detection, simple and accurate, with some useful functions such as storage, query, upload etc.
In the paper, a simple motion controller based on LM628 is developed, aiming at the few axes medium-sized and minitype numerical control system. This controller achieves many functions, such as multi-axes linkage, beeline and circular arc interpolation, position and condition reporting, digital PID filter, special I/O and configurable I/O and so on. It can be used to numerical control machine tool...
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