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A Predator-Prey Model Under the Influence of Toxin and Optimal Foraging Strategy
Issue:
Volume 6, Issue 5, October 2018
Pages:
312-319
Received:
16 September 2018
Published:
18 September 2018
Abstract: The traditional functional responses in predator-prey models do not explicitly include the effects of prey toxin. And optimal foraging theory mainly considers maximizing energy intake from prey, while prey toxicity is omitted from the strategy. However, a lot of evidence indicates that prey toxins set an upper limit on the predator's predation, therefore it should also be an important factor deciding predator's foraging preference. Our paper mainly studies a predator-prey model under the interaction of toxicity and optimal foraging strategy. The system contains one predator population and two prey species, while assuming that one prey species contains toxin. It is also assumed that there exists interspecies competition between two preys. Theoretical and numerical analysis both show that toxin-induced functional response and optimal foraging strategy have complex interactions on the dynamics of the system.
Abstract: The traditional functional responses in predator-prey models do not explicitly include the effects of prey toxin. And optimal foraging theory mainly considers maximizing energy intake from prey, while prey toxicity is omitted from the strategy. However, a lot of evidence indicates that prey toxins set an upper limit on the predator's predation, the...
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A Satisfaction Evaluation Model of the Rail Feeder Modes Based on SEM
Zhou Yun-yun,
Yu Lu-man,
Teng Jing
Issue:
Volume 6, Issue 5, October 2018
Pages:
320-326
Received:
16 September 2018
Published:
18 September 2018
Abstract: As the city entering the era of public transport mainly with the rail transit, the good feeder system and transfer system have become the most prominent problems in urban rail transit. High synergy between urban rail transit and transfer facilities is an inevitable requirement to optimize traffic, but there are few studies on urban rail transfer and the research content is only based on data statistics without considering the mutual influence of various factors. For more accurate evaluation of the relevant service level, this paper combines customer satisfaction and SERVQUAL theory with the structural equation, uses SmartPLS software to explore the evaluation model of urban rail transfer, and then in this paper we investigate the citizens in Shanghai to calculate the satisfaction index of bus, taxi, bicycle and pedestrian as empirical analysis. This model can analyze the relationship between different variables, gain the key factors influencing the satisfaction index, and point out the problems in the connection service, so as to provide decisions supporting the optimization of urban rail transfer. The results of the model can be used in various connection modes and can solve the remaining "last kilometer" problem of urban rail transit, which is of great significance to improve the service level and operation efficiency of rail transit.
Abstract: As the city entering the era of public transport mainly with the rail transit, the good feeder system and transfer system have become the most prominent problems in urban rail transit. High synergy between urban rail transit and transfer facilities is an inevitable requirement to optimize traffic, but there are few studies on urban rail transfer an...
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Research and Application of Recoverability Evaluation Method for Urban Road Network After Earthquake
Du Jie,
Lin Junqi,
Liu Jinlong
Issue:
Volume 6, Issue 5, October 2018
Pages:
327-331
Received:
16 September 2018
Published:
18 September 2018
Abstract: China is situated between the Eurasian seismic belt and the Circum-Pacific seismic belt, therefore earthquake ofte happened on it. In recent years, earthquakes have occurred frequently in China, such as the Jiuzhaigou earthquake, the Yushu earthquake, and the Wenchuan earthquake. The damage caused by these earthquakes to the urban road traffic system will lead to the paralysis of urban functions, which will directly affect the speed of post-earthquake rescue and increase the difficulty of rescue. In order to quickly assess the resilience of urban traffic after the earthquake, and then develop emergency evacuation and rescue routes, based on the reliability evaluation method of road network, this paper gives the calculation method of urban road network traffic reliability. Reliability determines the time necessary for the road network to return to normal capacity after the earthquake. The recoverability model of urban road network is evaluated through the established urban road network recoverability model, and the model is used to evaluate the recoverability of some road networks in Zhongshan District of Dalian City, and the prosperous area of Zhongshan District in Dalian is obtained. Part of the road network can recover better after the earthquake.It can provide reference for post-earthquake emergency rescue, avoidance and evacuation, medical rescue and other work.
Abstract: China is situated between the Eurasian seismic belt and the Circum-Pacific seismic belt, therefore earthquake ofte happened on it. In recent years, earthquakes have occurred frequently in China, such as the Jiuzhaigou earthquake, the Yushu earthquake, and the Wenchuan earthquake. The damage caused by these earthquakes to the urban road traffic syst...
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Research on Development of Simulation Interface of Engine Speed Characteristics Based on GT-POWER
Wang Pu-kai,
Shi Chao-fan,
Kang Qi,
Dong Yi,
Han Li-jun
Issue:
Volume 6, Issue 5, October 2018
Pages:
332-337
Received:
16 September 2018
Published:
18 September 2018
Abstract: The engine speed characteristic simulation operation interface based on GT-POWER was developed by using VB6.0. VB has the characteristics of simple operation, high efficiency and powerful function. It can realize the background data modification, operation control and calculation result reading and storage of GT-Power model, and draw the engine speed characteristics after finishing the data. curve. Based on ACCESS database, the automatic input and storage of interface input data is realized. The data access, operation control and result reading of GT-POWER model are realized based on VB6.0 programming. The engine is validated by VB6.0 "PictureBox" control. Power, effective torque and effective ratio fuel consumption curve. For the needs of engine speed characteristic simulation, VB6.0 software is used for secondary development of GT-Power, and Chinese operation interface is obtained to simplify the operation process of engine speed characteristic simulation, reduce operation difficulty and improve calculation efficiency, which has certain engineering significance. The simulation method has the advantages of high flexibility, low cost, strong repeatability, and the like, and can obtain parameters that are inconvenient to measure. The results show that the developed engine speed characteristic simulation operation interface can simplify the operation process of engine speed characteristic simulation, reduce the operation difficulty and improve the calculation efficiency.
Abstract: The engine speed characteristic simulation operation interface based on GT-POWER was developed by using VB6.0. VB has the characteristics of simple operation, high efficiency and powerful function. It can realize the background data modification, operation control and calculation result reading and storage of GT-Power model, and draw the engine spe...
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Innovative Talent Education in the United States and Its Enlightenment to China—Take the TI: GER Project as an Example
Issue:
Volume 6, Issue 5, October 2018
Pages:
338-343
Received:
17 October 2018
Published:
18 October 2018
Abstract: Professor Marie C. Thursby found that because of the difficulty of effectively transmitting hidden knowledge in the process of commercialization and the shortcomings of the existing innovation system in the United States, the probability of success from technological innovation to commercialization is low in the United States. Therefore, she insisted on that the Science & engineering universities of US must carry on innovative talent education in order to enhance the competitiveness of American manufacturing by affording their mater of multidisciplinary knowledge and know of commercialization process after her study on American’s innovation and it’s commercialization. Professor Marie C. Thursby had put forward the TI: GER program based on student education perspective, and this program has achieved a good result. China wants to develop from a large manufacturing country to a powerful manufacturing country, it is necessary to strengthen the construction of innovative talents. Learning from the advanced talent training model of the United States will help Chinese universities to improve their talent training methods and strengthen the innovative talents’ training. In this paper, case study is used to analyze the background, project content and implementation effect of TI: GER in detail. The conclusion of the paper is that China should improve the current innovative talent training mode from three aspects: market demand-oriented professional division of labor, project-driven flexible teaching management and reform of the existing assessment mechanism of university teachers.
Abstract: Professor Marie C. Thursby found that because of the difficulty of effectively transmitting hidden knowledge in the process of commercialization and the shortcomings of the existing innovation system in the United States, the probability of success from technological innovation to commercialization is low in the United States. Therefore, she insist...
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An New Automatic Connection and Separaton Device for Modularized and Fast Combined Interstage
Zhou Bei,
Hui Junpeng,
Zeng Liang
Issue:
Volume 6, Issue 5, October 2018
Pages:
344-352
Received:
17 October 2018
Published:
18 October 2018
Abstract: The assembling time of traditional spacecraft’s main connecting sections is long and separation structure of interstage can only be used once, which can’t meet the needs for modularization ,fast combination ,little impact force and reuse .This thesis proposed a new automatic connection and sepearation device ,which not only meet the demands above but also integrate the connection device and separation device. Software Pro/engineer is used to design the device’s structure and software Ansys is used to analyze the strength. The results show that the structure schreme is reasonable ,the device can realize fast combination,little impact force and reuse,and the device can meet the requirements of load and small radial room.
Abstract: The assembling time of traditional spacecraft’s main connecting sections is long and separation structure of interstage can only be used once, which can’t meet the needs for modularization ,fast combination ,little impact force and reuse .This thesis proposed a new automatic connection and sepearation device ,which not only meet the demands above ...
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New Perspective Leads the Way to Sustainable Development of the Hunman and Environment
Fang Jianqing,
Huang Guofu
Issue:
Volume 6, Issue 5, October 2018
Pages:
353-357
Received:
17 October 2018
Published:
18 October 2018
Abstract: This paper puts forward a new perspective of environmental protection to guide, promote and realize the sustainable development of human and environment based on the fact that the earth’s resources are limited. The concept of “the minimization principle of negative effect on environment” that human activities should follow is given and explained. Three methods for advocacy and implementation are analyzed, including the generalization and guidance of the new perspective of citizen’s life and environmental protection, the advocacy practice of social groups, and the guarantee and promotion of national laws and regulations. This paper also discusses several specific concepts and approaches of the new perspective of environmental protection, including low carbon lifestyle, population development and the environment bearing capacity matching, humans living mode optimization, work mode change, traffic adjustment, arms control, the rationalization of economic development speed, waste control, rational adjustment of the gap between the rich and the poor, and the application of the principle of prudence in the development of science and technology, etc. The study believes that when the new perspective of environmental protection is deeply rooted in the mind and transformed into a long-term conscious action of the human beings, the sustainable development of human and environment could truly become a reality.
Abstract: This paper puts forward a new perspective of environmental protection to guide, promote and realize the sustainable development of human and environment based on the fact that the earth’s resources are limited. The concept of “the minimization principle of negative effect on environment” that human activities should follow is given and explained. T...
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Empirical Study on Water Ecological Compensation Mechanism Across Provinces—Taking the Key Trans Provincial Section of Longnan as an Example
Issue:
Volume 6, Issue 5, October 2018
Pages:
358-366
Received:
17 October 2018
Published:
18 October 2018
Abstract: The practice of inter provincial basin of water ecological compensation is less in China，the main difficulties are the imperfection of the current government system and the unclear negotiation process between upstream and downstream. Longnan is located in the upper reaches of the three provinces. Promoting the work of inter provincial basin of water ecological compensation between Longnan and downstream provinces actively is meaningful for promoting the sustainable development of water ecology in river basins. According to the investigation on the spot, the cost of sewage disposal in different water quality of different inter provincial basin in Longnan is calculated, and the relevant compensation agreements are made. When the water quality of the cross-section is better or worse than the target water quality, Longnan should receive the compensation or pay the money, and the short-term, medium-term and long-term compensation plans are put forward, which provide useful ideas and specific reference schemes for relevant regions to carry out inter-provincial basin water ecological compensation.
Abstract: The practice of inter provincial basin of water ecological compensation is less in China，the main difficulties are the imperfection of the current government system and the unclear negotiation process between upstream and downstream. Longnan is located in the upper reaches of the three provinces. Promoting the work of inter provincial basin of wate...
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Discussion on the Functional Mechanism of the Community Health Service Center in the Existing Medical Service System
Issue:
Volume 6, Issue 5, October 2018
Pages:
367-372
Received:
17 October 2018
Published:
18 October 2018
Abstract: The current situation of patients visiting hospitals is that, large hospitals are overcrowded with patients, but there are relatively insufficient patients in community hospitals. The root cause is that the role of existing basic medical and health institutions has not been properly and fully utilized. If this situation cannot be fundamentally changed, then it is impossible to say that the medical reform has embarked on the road to success. Therefore, if the overall medical development strategy can be implemented to provide more preferential support to the grass-roots hospital, in order to lead the general direction of social and medical development further, and facilitate the work of grass-roots hospitals; the work direction of community health service centers, in terms of business philosophy, examination, treatment, technical means, hospital management, and resource mobilization in all directions etc.., has been adjusted accordingly, so as to create internal conditions and driving factors for more patients to return to the grass-roots hospitals; the large hospitals should also provide more corresponding support and help to community health service centers in the focus of work, with the aim of promoting the development of grass-roots medical institutions objectively at the higher medical level, we believe that the number and categories of diseases of patients visiting basic medical and health institutions will change a lot in the near future, even fundamentally.
Abstract: The current situation of patients visiting hospitals is that, large hospitals are overcrowded with patients, but there are relatively insufficient patients in community hospitals. The root cause is that the role of existing basic medical and health institutions has not been properly and fully utilized. If this situation cannot be fundamentally chan...
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Research on Problems and Countermeasures of Information Technology in Classroom Teaching Application
Liu Xudong,
Hao Qi,
Zhang Liguo
Issue:
Volume 6, Issue 5, October 2018
Pages:
373-379
Received:
17 October 2018
Published:
18 October 2018
Abstract: At present, countries all over the world are vigorously promoting the development of education informatization. The core of education information is the integration of information technology and curriculum, and the application of information technology classroom teaching is the concrete realization of this thought in teaching. This paper focuses on the problems and countermeasures of information technology in classroom teaching applications. Firstly, it briefly reviews the development process of education informatization in China, and summarizes the main contents of classroom teaching reform under the background of informatization and the role of information technology in promoting classroom teaching reform. Then it discusses in detail the 4 specific problems of information technology applied in classroom teaching, that is, the positioning of information technology in teaching is not clear, the awareness and ability of teachers' application technology are lacking, the application of information technology in the classroom is inappropriate, and the interactive feedback in the information environment is poor. Finally, the countermeasures are given, that is, the application of information technology in classroom teaching should focus on the organic integration of information technology and classroom teaching, enhance teachers' technical application ability, expand communication channels and achieve diversified evaluation, so as to achieve the purpose of optimizing classroom teaching, improving teaching quality, and facilitating the cultivation of talents in the information age.
Abstract: At present, countries all over the world are vigorously promoting the development of education informatization. The core of education information is the integration of information technology and curriculum, and the application of information technology classroom teaching is the concrete realization of this thought in teaching. This paper focuses on...
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Study on the Training Strategy of Students' Practical Ability in Education Technology Major
Issue:
Volume 6, Issue 5, October 2018
Pages:
380-385
Received:
17 October 2018
Published:
18 October 2018
Abstract: With the development of information technology education and teaching reform, professional and educational technology have also been developed, educational technology is based on practical application of discipline on the basis of social practice ability of educational technology undergraduate raised higher and higher requirements. However, many colleges and universities exist in the practical ability of lack of cause of educational technology specialty current widespread concern is to develop educational technology professional students' practical ability, Students and teachers are in a confused period, we do not know how to carry out effective teaching and learn. So I think many students graduate without a good job, the national employment requirements and student capacity want to violate through the analysis of the connotation of practical ability, so in my opinion content herein educational technology practical ability and current educational technology major in the culture is present at the practical ability aspects and educational technology practice capability requirements were discussed, and finally by improving the training plan, a reasonable set of theoretical knowledge, strengthen experiment teaching, improve the practical ability to strengthen students of the corresponding training program innovation and practical ability to improve the educational technology majors in practical measures ultimately promote overall development of students.
Abstract: With the development of information technology education and teaching reform, professional and educational technology have also been developed, educational technology is based on practical application of discipline on the basis of social practice ability of educational technology undergraduate raised higher and higher requirements. However, many co...
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Application and Study on Problem-Based in Computer Network Teaching
Zhengqin Xu,
Lei Zhang,
Wendong Zhao,
Laixian Peng,
Aijing Li
Issue:
Volume 6, Issue 5, October 2018
Pages:
386-391
Received:
17 October 2018
Published:
18 October 2018
Abstract: Problem-Based Teaching is a teaching method based on problems, in which the teacher combs the knowledge of the course and establishes the chain of questions. So students try to find solutions of them in the learning process. Computer network course is the core course of computer specialty. It involves many knowledge points which is scattered and covering a wide range, so that it is abstract and difficult to understand. Students feel it is difficult to learning because there is no direct link between various protocols. This paper analyzes the existing problems in computer network teaching, puts forward the application of “Problem-Based” interactive teaching mode in computer network course, puts forward that creating problem situation on the basis of theoretical analysis and practice is an effective teaching strategy, and defines the design principles of effective problems. Practice has proved that the application of Problem-Based Teaching method in computer network course can stimulate students' interest in learning, enhance students' self-learning awareness and cultivate students' self-learning ability. This paper takes the “identification protocol” as an example and expounds in detail how to cultivate the students' ability to apply computer network knowledge by creating a series of question chains in computer network teaching.
Abstract: Problem-Based Teaching is a teaching method based on problems, in which the teacher combs the knowledge of the course and establishes the chain of questions. So students try to find solutions of them in the learning process. Computer network course is the core course of computer specialty. It involves many knowledge points which is scattered and co...
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Application of Virtual Experiment in Maker Education
Issue:
Volume 6, Issue 5, October 2018
Pages:
392-398
Received:
17 October 2018
Published:
18 October 2018
Abstract: In 2016, Maker became a hot spot in the field of educational technology. Countries around the world has paid special attention to the development of makers and innovations, and Maker Education also developed rapidly with the continuous advancement of cutting-edge technology and the renewal of people's educational concepts. The theoretical researches and applications related to it are also increasing. Virtual experimental technology has developed stably in recent years and has been widely used in all aspects of education and teaching. The application of virtual experiment technology in the field of Maker Education can not only solve the existing problems of Maker Education, but also promote the development of Maker Education in the future. This paper analyzes the related literatures and cases of virtual experiment technology and the development of maker education in recent years. Taking the application of virtual experiment in maker education as the starting point, the existing problems of maker education, the application status of virtual experiment in maker education as well as analysis of application principles and application examples are analyzed, finally the paper puts forward their own ideas for the application prospects of virtual experiments in the field of maker education. Therefore, the researches in this paper can provide a useful reference for the future development model of Maker Education.
Abstract: In 2016, Maker became a hot spot in the field of educational technology. Countries around the world has paid special attention to the development of makers and innovations, and Maker Education also developed rapidly with the continuous advancement of cutting-edge technology and the renewal of people's educational concepts. The theoretical researche...
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Control Algorithm of Two-Phase Hybrid Stepper Motor Based on Three-State Hysteresis
Xiao Shenping,
Wang Xiaolin
Issue:
Volume 6, Issue 5, October 2018
Pages:
399-405
Received:
17 October 2018
Published:
18 October 2018
Abstract: When the drive system of two-phase hybrid stepper motor adopts the traditional hysteresis loop control mode, it has good dynamic response performance, but also has some disadvantages such as big current ripple and big noise. In view of the above problems, the given current within one period of the winding is divided into ascending area, flat area and descending area, and the different demands for the rate of change of current in each area are analyzed in this paper. Compared with the traditional hysteresis loop, the three-state hysteresis loop has more switch combinations, which can meet the requirement of switching multiple current change rate in the driving system of two-phase hybrid stepping motor. This control algorithm based on three-state hysteresis loop presented in this paper can not only guarantee the dynamic response performance, but also greatly reduce the current ripple. The relationship between current ripple and terminal voltage, inductance and control frequency is derived in this paper. The hardware platform was set up with Cyclone IV FPGA of Altera company as the core processing chip, and the two-phase hybrid stepping motor of Oriental motor company model PK299DB was taken as the control object for experimental verification. Simulation and experiment verify the effectiveness of the algorithm.
Abstract: When the drive system of two-phase hybrid stepper motor adopts the traditional hysteresis loop control mode, it has good dynamic response performance, but also has some disadvantages such as big current ripple and big noise. In view of the above problems, the given current within one period of the winding is divided into ascending area, flat area a...
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Analysis of Influence of the Inner Diameter of the Permanent Magnet on Rotor Stress and Critical Speed for the High Speed Permanent Magnet Motor
Xu Zhiyu,
Deng Zhiquan,
Zhang Zhongming,
Sun Quangui,
Pang Gucai
Issue:
Volume 6, Issue 5, October 2018
Pages:
406-413
Received:
17 October 2018
Published:
18 October 2018
Abstract: While the rotor of a high-speed permanent magnet motor runs at high speed, it is difficult for the permanent magnet to bear the huge tensile stress which caused by centrifugal force. In addition, the rotor is also prone to vibration and even bending deformation due to resonance. Therefore, the strength and critical speed of the rotor must be analyzed and checked. In this paper, because of the slim characteristic of high speed permanent magnet rotors, the displacement and stress fields of a 150 kW, 30 000 r/min surface mounted high speed permanent magnet motor rotor are deduced based on the theory of the thick-walled cylinder. The finite element method is used to verify the correctness of the analytical calculation. Based on the deduced analytical formulas, the influences of the inner diameter of the permanent magnet and the sleeve material on the rotor stress are analyzed. At the same time, the finite element method is used to calculate the critical speed of the rotor and analysis the influences of the inner diameter of the permanent magnet and the sleeve material on the critical speed of the rotor shaft system. A basis for the design of the high speed permanent magnet motor rotor is given.
Abstract: While the rotor of a high-speed permanent magnet motor runs at high speed, it is difficult for the permanent magnet to bear the huge tensile stress which caused by centrifugal force. In addition, the rotor is also prone to vibration and even bending deformation due to resonance. Therefore, the strength and critical speed of the rotor must be analyz...
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Application of Mind Mapping in the Course Construction of the Technology of Aviation Datalink
Juan Chen,
Lei Zhang,
Xueqiang Zheng
Issue:
Volume 6, Issue 5, October 2018
Pages:
414-420
Received:
7 November 2018
Published:
8 November 2018
Abstract: In early 1960s, British “Mr. Brain” Tony Buzan has fathered a creative tool—Mind Map, which soon became popular and was occupied widely in many fields, especially in the field of education. Mind Mapping which improves intelligence and raises the level of thinking, has been recognized by more and more people. Mind maps help people learn information through organizing it and adding images and coloring to it. With the demonstration of its practice effect, Mind Map’s potential value has attractived some relevant personages in Chinese education circle. Mind mapping is a visual way to record and organize information where a ”map” is drawn up which does not rely on large amounts of written information, but on textual descriptors and graphical clues. As a visualization tool, Mind Mapping provides a strong support in optimaizing the teaching activities and the course construction, which is an important content of teaching basic construction in colleges and universities. Strengthening the course construction is effective to carry out the teaching plan, lift the level of instruction and the talent training quality. The foundation of the course construction is the textbook construction. Because of the lack of corresponding textbook in the course of the Technology of Aviation Datalink, it needs to write a new suitable textbook. Through analyzing of the difficulties of textbook compilation, it emphasizes the necessity of Mind Mapping. With using Mind Mapping in the textbook construction, it improves the process of the textbook compilation. Writing the textbook is clear, scientific and efficient, and the textbook is logical and comprehensible. Moreover, using Mind Mapping can enhance the relationship of the editors. In this paper, it uses the MindManager software, and presents some operational software skills.
Abstract: In early 1960s, British “Mr. Brain” Tony Buzan has fathered a creative tool—Mind Map, which soon became popular and was occupied widely in many fields, especially in the field of education. Mind Mapping which improves intelligence and raises the level of thinking, has been recognized by more and more people. Mind maps help people learn information ...
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Design and Development of Archives Management Information System in Primary and Secondary Schools
Issue:
Volume 6, Issue 5, October 2018
Pages:
421-428
Received:
7 November 2018
Published:
8 November 2018
Abstract: The main way of recording school records has changed from original writing to electronic documents. A large number of electronic documents not only put forward new requirements for file management, but also bring great convenience for file digitization.With the progress of digital campus, digital archives management in primary and secondary schools is an inevitable development direction. This paper has elaborated paper archives and digital archives integrated management solution applicable to primary and secondary schools according to the requirements of GB/T 18894-2016 “Standards of electronic records filing and management”, based on the development and application practice of archives management information system in Chongqing Yongchuan Middle School. The paper has emphatically elaborated the design and implementation of the archives management information system, including architecture and technology design, requirement and function design, security and confidentiality design, and business process design. Therefore, In the aspect of technology realization, In the aspect of technology realization, the idea of software development based on B/S architecture design and layered realization is expounded. It involves the system configuration, category management, file management, box management, thematic file management and loan registration management and other major functional modules of file management.it can be used as a reference for archives digital management in primary and secondary schools.
Abstract: The main way of recording school records has changed from original writing to electronic documents. A large number of electronic documents not only put forward new requirements for file management, but also bring great convenience for file digitization.With the progress of digital campus, digital archives management in primary and secondary schools...
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Application on Simulation Technology for Teaching the Course of Introduction to Computer Science
Jiangfeng Li,
Chenxi Zhang
Issue:
Volume 6, Issue 5, October 2018
Pages:
429-435
Received:
7 November 2018
Published:
8 November 2018
Abstract: The course Introduction to Computer Science is a basic course for undergraduate students majoring in computer science. It is the first time for the students to learn knowledge of computer science in college. There are a lot of problems in students' learning, such as boring learning and lack of interests. In this paper, related works of teaching methods using simulation technology are introduced firstly. Also, approaches of teaching for the course Introduction to Computer Science are presented. Then, features are analyzed for the course Introduction to Computer Science, and difficulties that students have been facing in learning the course are discussed. Next, simulation technology is used in teaching the course. Using the technology, softwares of simulators and related simulations for the course are designed and implemented. There are three simulators and six simulations that are used in teaching the course. The simulators include sorting algorithm simulator, binary operation simulator, and process management simulator. The first simulator is used for showing processes of sorting algorithms. The second one is used to run binary operations. The last one is used to display statuses of processes and operations of allocation in running multi-process tasks. Those simulators and simulations have good performances in teaching the course Introduction to Computer Science.
Abstract: The course Introduction to Computer Science is a basic course for undergraduate students majoring in computer science. It is the first time for the students to learn knowledge of computer science in college. There are a lot of problems in students' learning, such as boring learning and lack of interests. In this paper, related works of teaching met...
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A "Photographing and Making Money" Pricing Model Based on Game Theory
Yuefeng Li,
Jianzhi Lang,
Xingliang Zhou,
Yuchen Pan
Issue:
Volume 6, Issue 5, October 2018
Pages:
436-443
Received:
7 November 2018
Published:
8 November 2018
Abstract: In recent years, the Internet has shown a booming situation. According to the survey, many emerging products have flooded into the market on a large scale. One of the self-service apps that make money by taking pictures has quietly emerged in many big cities. Firstly, taking Shenzhen City, Guangdong Province, China as the research object, the price of photographing and making money in different areas of Guangzhou was collected and analyzed. The relationship between location and price was obtained by multivariate linear fitting, and the latitude and longitude of the failed task after clustering was substituted. The three main reasons for the failure of the task in the software are: low pricing or remote location; members and tasks are far away, members have low credibility, and scheduled tasks start too late; the population of the region The flow rate is low and the market potential is insufficient. Secondly, in order to reduce the probability of task failure, a non-cooperative game model is established to improve the pricing law, which increases the task success rate by 11.3% compared with the original, indicating that the model can effectively improve the task success rate. Finally, in order to avoid the concentration of tasks, users are competing for choice, and also improve the efficiency of task completion. Consider combining these tasks together and publishing them. Therefore, the optimized “crowdsourcing” model is established again, and the implementation of the scheme is evaluated by data fitting. Effect. The result suggests that this model not only effectively ensures the authenticity of the survey's data, but also shortens the survey's period, which is conducive to increasing the respective interests between enterprises and users and promoting economic development.
Abstract: In recent years, the Internet has shown a booming situation. According to the survey, many emerging products have flooded into the market on a large scale. One of the self-service apps that make money by taking pictures has quietly emerged in many big cities. Firstly, taking Shenzhen City, Guangdong Province, China as the research object, the price...
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