Comparing with the search function focusing on massive unstructured process data in current civil aircraft system, the improved search algorithm proposed in this paper mainly makes the following optimization:At first,...
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Comparing with the search function focusing on massive unstructured process data in current civil aircraft system, the improved search algorithm proposed in this paper mainly makes the following optimization:At first, the data is preprocessed before segmentation to enhance the precision and speed;Secondly, considering that keywords in different places weight differently, a concept of key coefficient is introduced based on the traditional TF-IDF algorithm, and for a better representativeness of the extracted words, threshold in the weight of keywords is set as extracted words filters;Then, the improved TF-IDF algorithm is based on the big data programming model Map Reduce to improve the computational efficiency. Final, including the feedback of individual query, the improved sorting algorithm can provide a better query result to meet users' demand.
Computer education has been developed into education of information technology with the rapid development in information technology represented by computer and Internet in the world *** employ a load of approaches to ...
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Computer education has been developed into education of information technology with the rapid development in information technology represented by computer and Internet in the world *** employ a load of approaches to investigate the efficiency in computer and information technology education,and assignment setting is one of those powerful *** particularity of this approach is apparent compared with other traditional curriculums,especially assignment submission and management *** paths for assignment submission are not compatible with programming IT courses and are exposed to numerous *** the establishment of a set of Internet-based supervisory system which features convenience,speed,applicability,security and reliability for assignment management is pretty *** thesis conducts a briefing on the general process development for web-based supervisory system for assignment management,totally specifying in details for programming completed in three phases named system analysis,system design and system *** supervisory system for assignment management is inserted the latest B/S(browser/server) structure of widespread popularity,which functions in handing in assignment of IT courses to teachers in the cyber space for teachers’ review and download on the *** aiding functions are also replenished adding to the submission core,assignment deletion,checking of system assistance,comment affixed and checking of registration roll list,just name a *** realizing functions aforesaid,the foreground resorts to ASP(Active Server Pages),which is launched by Microsoft with nature agreed to dynamic server pages on the *** background applies SQL Server 2000 data database management system that features high safeguarding security and comparatively more satisfactory function integrated to the Internet.
Based on analyzing the present fact of domestic andinternational vendor performance evaluation, Based on the construction of index system for manufacturing supplier ability evaluation and analysis, a new method is pr...
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Based on analyzing the present fact of domestic andinternational vendor performance evaluation, Based on the construction of index system for manufacturing supplier ability evaluation and analysis, a new method is presented in this paper, which apply the principal component, the fisher method and K-NN Classifiers method of multivariate statistical analysis. The paper investigated supplier’s choice and supply chain design on the basis of performance evaluation by means of methods of multicity statistics comprehensive assessment and goal programming. Finally, the model is approved by a case provided which is practical and effective. The result shows that the model could reflect the capabilities of the supplier objectively and fairly and achieve an effective evaluation on supplier performance and which plays a role of illumination for supply chain design.
With the continuous acceleration of social development, information technology has been constantly innovated and developed. Digital multimedia has become a new form of artistic expression under the background of infor...
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With the continuous acceleration of social development, information technology has been constantly innovated and developed. Digital multimedia has become a new form of artistic expression under the background of information technology. It effectively integrates rational andartistic thinking, and exists in all walks of life in a comprehensive way of art. By launching a series of explorations of digital multimedia technology in mobile games, this research gives a brief overview of digital multimedia theory and main artistic features, analyzes the main development process and characteristics of mobile games, and finally explores how to apply the digital multimedia technology to the mobile game more efficiently, to improve mobile games for better production results. This study is expected to provide a theoretical basis for the research and development of mobile games in China.
This paper wanted to build a new evaluation indexforevaluatingthe achievement of basic medical insurance system in China more direct and *** combining Va R method and the parameters of basic medical insurance policy,w...
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This paper wanted to build a new evaluation indexforevaluatingthe achievement of basic medical insurance system in China more direct and *** combining Va R method and the parameters of basic medical insurance policy,we designed this new index. Then, taking NRCM as an example,we used this indexto evaluate the effects that system solved high medical cost problem in different reimbursement *** on the previous analysis,this paperprovesthefeasibility of the new index, and providesdecision support for policy improvement of the government.
A novel framework based on neural network is proposed to predict sentiment polarity of aspects in a sentence. The proposed model finely tunes pre-trained word embedding in order to get more accurate embedding for aspe...
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A novel framework based on neural network is proposed to predict sentiment polarity of aspects in a sentence. The proposed model finely tunes pre-trained word embedding in order to get more accurate embedding for aspect-based sentiment analysis task. Aspect attention based on its location and the whole sentence is calculated to generate importance of context words. The merits of our model are tested on three datasets: reviews of restaurants, laptops from SemEval2014, and review collected from twitter for testing robust of our model on language form. It is shown by experiments that the proposed model outperforms the state-of-the-art methods on these datasets.
Fully tapping into the flexibility potential inherent in iron and steel enterprise and fostering its friendly interactions with the power grid are key directions for future development. Gas, steam, and electricity con...
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ISBN:
(数字)9798350349030
ISBN:
(纸本)9798350349047
Fully tapping into the flexibility potential inherent in iron and steel enterprise and fostering its friendly interactions with the power grid are key directions for future development. Gas, steam, and electricity constitute the three essential secondary energy sources in iron and steel enterprise, and their integration forms a flexible and schedulable energy system. This study, with the objective of minimizing energy system operational costs, employs Mixed-Integer Linear programming (MILP) to establish a gas-steam-power coupled scheduling model that accounts for internal production constraints. The energy system engages in demand response as a virtual power plant, by optimally allocating the utilization of gas, steam, and power. Under the TOU tariff, the power regulation range of the virtual power plant reaches approximately 26.94% of the purchased power when not participating in TOU, unveiling the enormous potential for load regulation within the iron and steel enterprise.
The shortage of teachers is the key problem which restricts the development of art education in rural primary schools. SPOC is a typical curriculum paradigm in the "post MOOC era". Its basic idea is to desig...
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The shortage of teachers is the key problem which restricts the development of art education in rural primary schools. SPOC is a typical curriculum paradigm in the "post MOOC era". Its basic idea is to design and utilize excellent MOOC resources, in order to change or reorganize school teaching process, to promote blending teaching and participatory learning, and to improve the quality of learning and teaching. Under the guidance of SPOC concept, SPOC teaching team is set up to design and develop teaching resources like micro videos. In class, teachers use micro videos to teach relevant contents;cooperative inquiry is realized between students and teachers. After class, personalized learning and communication between students are realized through SPOC platform. Through this model, part-time teachers are able to teach art lessons professionally. It makes up the shortcoming of insufficient art teachers in rural primary schools, and solves students' problem of lacking professional guidance after class. It expands the span of space and time for rural students, and improves the teaching quality of art curriculum in rural primary schools.
Distribution networks with renewable energy encounter two challenges. One is that during the peak load, generation is normally low or zero and it will cause the voltage drop. Meanwhile, during peak generation period, ...
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Distribution networks with renewable energy encounter two challenges. One is that during the peak load, generation is normally low or zero and it will cause the voltage drop. Meanwhile, during peak generation period, the generated power will exceed the load and be injected to the grid, which will cause the voltage rise. This paper proposes a MILP(Mixed Integer Linear programming) approach to accommodate more wind generation in distribution networks. Optimal system contains battery energy storage system(BESS), wind power, external grid, critical load and controllable load. By coordinating the states of controllable load, battery and wind power direction, the objective to minimize the total cost from grid can be reached. Detailed case study is given to demonstrate the feasibility of this approach.
Computerized Numerical Control (CNC) machine tools is the foundation of modern manufacturing systems, whose advanced digital technology is the key to solve the problem of sustainable development of machine tool manufa...
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Computerized Numerical Control (CNC) machine tools is the foundation of modern manufacturing systems, whose advanced digital technology is the key to solve the problem of sustainable development of machine tool manufacturing industry. The paper is to design CNC system embedded on ARM and indicates the hardware design and the software systems supported. On the hardware side: the driving chip of the motor control unit, as the core of components, is MCX314AL of DSP motion control which is developed by NOVA Electronics Co., Ltd. of Japan. It make convenient to control machine because of its excellent performance, simple interface, easy programming. On the Software side, the uC/OS-2 is selected as the embedded operating system of the open source, which makes a detailed breakdown of the modules of the CNC system. Those priorities are designed according to their actual requirements. The ways of communication between the module and the interrupt response are so different that it guarantees real-time property and reliability of the numerical control system. Therefore, it not only meets the requirements of the current social precision machining, but has good man-machine interface and network support to facilitate a variety of craftsmen use.
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