Evaluation of any prediction model is the most important part for comparison. Mean Magnitude Relative Error (MMRE) is one of the traditional evaluation criterion. In this paper we demonstrate the application of MMRE f...
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Evaluation of any prediction model is the most important part for comparison. Mean Magnitude Relative Error (MMRE) is one of the traditional evaluation criterion. In this paper we demonstrate the application of MMRE for model for predicting software development effort estimation and show that MMRE is not a suitable evaluation criterion for the software development estimation models. The argument is supported by series of simulations. In this paper we also suggest changes needed in MMRE calculations and propose Modified MMRE algorithm for the effort estimation evaluation criterion.
The Moire method is a new experimental stress analytical method that determines the strain field or displacement field using interferometric fringes produced by grating. The strain and the displacement are calculated ...
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Because of “information islands” of internal allegations shipboard command and simulation control system in the past, it brought the problem that the performance of access is inefficient. So, a architecture was empl...
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Because of “information islands” of internal allegations shipboard command and simulation control system in the past, it brought the problem that the performance of access is inefficient. So, a architecture was employed based on SOA (Service Oriented Architecture). In this architecture, the simulation system was built by using of SCA (Service Component Architecture) method; To gain a quick response for the system needs, we package some functions of system into a number of services to achieve maximum reuse of business components, develop the services of the system programming, and publish and remote calling of services with web services. Finally, the simulation shows that the shipboard command and simulation control system based on SCA can meet heterogeneous and flexibility.
It is of great significance to generate a promising routine by the consideration of economic,environmental,safety,and energy consumption aspects simultaneously in the early stages of chemical process *** order to achi...
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It is of great significance to generate a promising routine by the consideration of economic,environmental,safety,and energy consumption aspects simultaneously in the early stages of chemical process *** order to achieve this goal,a method based on multi-objective programming is *** detailed models are *** integer linear programming(MILP) approach is used to solve this multi-objective *** method is demonstrated in the case study of polyvinylchloride(PVC) process *** of reaction routes are selected by using multi-objective *** results showed that ethane-propane steam cracking-balanced oxychlorination of ethylene-vinyl chloride suspension polymerization process is a promising *** not only results in chemical process that is safer and environmental conscious but also leads to reduced energy consumption and costs.
Aiming at the high guideposts of capacity, pressure and Mach number of the 0.6 meters wind tunnel, a new strategy compounded fuzzy and PID is proposed in this paper, and the corresponding controller is designed for th...
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ISBN:
(纸本)9781457705359
Aiming at the high guideposts of capacity, pressure and Mach number of the 0.6 meters wind tunnel, a new strategy compounded fuzzy and PID is proposed in this paper, and the corresponding controller is designed for the wind tunnel. Using the advanced virtual instrument programming language Lab Windows/CVI as the development tool, the control of continuous Mach number and single nozzle total pressure for 0.6 meters supersonic wind tunnel are realized using modular, structured design method. The control accuracy reaches 0.2% and the time of transition process is short without overshoot. Thus the test efficiency is improved, the gas source is saved and achieve the purposes of saving energy and lower energy.
This paper presents the design of a mini forklift robot that can store and pick up object to/ from specified storage slot from/ to a base using line follower and RFID. Currently, in warehouse storage systems are mainl...
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Wind energy is a kind of green energy. Wind power will fleetly develop in China, too. The technology for yaw system hasn't been developed for a long time. Therefore, on this subject, the related research and desig...
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Photosynthesis is the result of long-term evolution and development of solar energy to the process can be fixed. "Photosynthesis" is a process of evolution and developed over a long period that can fix solar...
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Photosynthesis is the result of long-term evolution and development of solar energy to the process can be fixed. "Photosynthesis" is a process of evolution and developed over a long period that can fix solar energy, which will give a good inspiration to energy field, material field, and even economical field. In this article, computer programming ideas and MIS theory were applied to simulate the process of plant photosynthesis, and it can reproduce the process of plant photosynthesis appropriately.
Aiming at the high guideposts of capacity, pressure and Mach number of the 0.6 meters wind tunnel, a new strategy compounded fuzzy and PID is proposed in this paper, and the corresponding controller is designed for th...
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Since both the information which is existed in an organization and its security play a terrific and significant role in a current competitive world,a stringent planning is required for the Information Security Managem...
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Since both the information which is existed in an organization and its security play a terrific and significant role in a current competitive world,a stringent planning is required for the Information Security Management System implementation *** this paper,a planning for executing the mentioned project is proposed by considering five essential processes of project *** completion times of some activities are not admissible for the respective project customer,they need to be ***,a linear programming model with the cost minimization objective function is *** other words, with the model and conditions proposed in this paper,no activity is forced to be ehminated for dehvering the project within acceptable time and the dimensions of time,cost,quality and the scope are not sacrificed for one another and they are all noticed *** project as it is described in this paper is planned and executed in one of Iranian leading IT-based companies.
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