This paper proposes a novel chronically evaluated highest instantaneous priority next processor scheduling algorithm. The currently existing algorithms like first come first serve, shortest job first, round-robin, sho...This paper proposes a novel chronically evaluated highest instantaneous priority next processor scheduling algorithm. The currently existing algorithms like first come first serve, shortest job first, round-robin, shortest remaining time first, highest response ratio next and varying response ratio priority algorithm have some problems associated with them. Some of them can lead to endless waiting or starvation and some of them like round-robin has problem of too many context switches and high waiting time associated with them. In the proposed algorithm, we have taken care of all such problems. As the novel algorithm is capable of achieving as good results as shortest remaining time first algorithm and also it will never lead to starvation.展开更多
To cope with multi-directional transmission coupling,spreading, amplification, and chain reaction of risks during multiproject parallel construction of warships, a risk transmission evaluation method is proposed, whic...To cope with multi-directional transmission coupling,spreading, amplification, and chain reaction of risks during multiproject parallel construction of warships, a risk transmission evaluation method is proposed, which integrates an intuitionistic cloud model with a fuzzy cognitive map. By virtue of expectancy Ex, entropy En, and hyper entropy He, the risk fuzziness and randomness of the knowledge of experts are organically combined to develop a method for converting bi-linguistic variable decision-making information into the quantitative information of the intuitionistic normal cloud(INC) model. Subsequently, the threshold function and weighted summation operation in the traditional fuzzy cognitive map is converted into the INC ordered weighted averaging operator to create the risk transmission model based on the intuitionistic fuzzy cognitive map(IFCM) and the algorithm for solving it. Subsequently, the risk influence sequencing method based on INC and the risk rating method based on nearness are proposed on the basis of Monte Carlo simulation in order to realize the mutual conversion of the qualitative and quantitative information in the risk evaluation results.Example analysis is presented to verify the effectiveness and practicality of the methods.展开更多
The present study aimed to design,develop,operate and evaluate a sightseeing spot recommendation system as a smart tourism tool that gathers and accumulates sightseeing spot information and considers personal preferen...The present study aimed to design,develop,operate and evaluate a sightseeing spot recommendation system as a smart tourism tool that gathers and accumulates sightseeing spot information and considers personal preferences as well as priority conditions to support tourism activities,especially in urban tourist areas.The system was developed by integrating web-geographic information systems(Web-GIS),the recommendation system and the evaluation system.Additionally,the system was operated for 4 weeks in the central part of Yokohama City in Kanagawa Prefecture,Japan,and the total number of users was 62.Based on the results of the web questionnaire survey,the system was highly useful for sightseeing activities,and further utilization of each function can be expected by continuing the operation.From the results of access analysis of users’log data,it is evident that the system has been used by different types of information terminals just as it was designed for,and that the system has been used according to the purpose of the present study,which is to support the sightseeing activities of users.However,the number of visits to pages related to the evaluation function of sightseeing spots and submitting function of new sightseeing spot information was low.This may improve if the system operation is conducted on a long-term basis.展开更多
A new network protocol (Demand Priority Protocol) environmentcan provide more satisfying service for different urgent transmission requests. Inthis paper, in order to provide guidance for the selection of environment ...A new network protocol (Demand Priority Protocol) environmentcan provide more satisfying service for different urgent transmission requests. Inthis paper, in order to provide guidance for the selection of environment of multimedia data transmission in Computer Supported Cooperative Work better, an objectoriented protocol specification language based on C++ is used to design a virtualenvironment of multiworkstation of computer cooperative work and to simulate execution of demand priority network protocol and then the performances of varioustransmission requests are analyzed. Finally, an evaluation of the demand priorityLAN is given.展开更多
By adopting the evaluation index system of conservation priority which included threatened coefficient,genetic coefficient,utilization coefficient, protection status coefficient and list status coefficient,the endange...By adopting the evaluation index system of conservation priority which included threatened coefficient,genetic coefficient,utilization coefficient, protection status coefficient and list status coefficient,the endangered plants in Northeast China were quantitatively analyzed and synthetically evaluated,and the value of conservation priority and conservation priority grades of the endangered plants were determined.The results showed that there were 60 species of endangered plants belonging to 42 genera and 25 families in Northeast China,the value of conservation priority ranged from 0.853 8-0.318 4.The endangered plants were divided into 3 grades according to their values of conservation priority, 17 species belonging to 15 genera and 11 families were in the first grade protection,18 species belonging to 14 genera and 11 families were in the second grade protection,25 species belonging to 17 genera and 13 families were in the third grade protection.The quantitatively evaluation index system of conservation priority in this paper represented the degree of conservation priority of the endangered plants comprehensively,objectively and accurately.展开更多
文摘This paper proposes a novel chronically evaluated highest instantaneous priority next processor scheduling algorithm. The currently existing algorithms like first come first serve, shortest job first, round-robin, shortest remaining time first, highest response ratio next and varying response ratio priority algorithm have some problems associated with them. Some of them can lead to endless waiting or starvation and some of them like round-robin has problem of too many context switches and high waiting time associated with them. In the proposed algorithm, we have taken care of all such problems. As the novel algorithm is capable of achieving as good results as shortest remaining time first algorithm and also it will never lead to starvation.
基金supported by the National Natural Science Foundation of China(71501183).
文摘To cope with multi-directional transmission coupling,spreading, amplification, and chain reaction of risks during multiproject parallel construction of warships, a risk transmission evaluation method is proposed, which integrates an intuitionistic cloud model with a fuzzy cognitive map. By virtue of expectancy Ex, entropy En, and hyper entropy He, the risk fuzziness and randomness of the knowledge of experts are organically combined to develop a method for converting bi-linguistic variable decision-making information into the quantitative information of the intuitionistic normal cloud(INC) model. Subsequently, the threshold function and weighted summation operation in the traditional fuzzy cognitive map is converted into the INC ordered weighted averaging operator to create the risk transmission model based on the intuitionistic fuzzy cognitive map(IFCM) and the algorithm for solving it. Subsequently, the risk influence sequencing method based on INC and the risk rating method based on nearness are proposed on the basis of Monte Carlo simulation in order to realize the mutual conversion of the qualitative and quantitative information in the risk evaluation results.Example analysis is presented to verify the effectiveness and practicality of the methods.
文摘The present study aimed to design,develop,operate and evaluate a sightseeing spot recommendation system as a smart tourism tool that gathers and accumulates sightseeing spot information and considers personal preferences as well as priority conditions to support tourism activities,especially in urban tourist areas.The system was developed by integrating web-geographic information systems(Web-GIS),the recommendation system and the evaluation system.Additionally,the system was operated for 4 weeks in the central part of Yokohama City in Kanagawa Prefecture,Japan,and the total number of users was 62.Based on the results of the web questionnaire survey,the system was highly useful for sightseeing activities,and further utilization of each function can be expected by continuing the operation.From the results of access analysis of users’log data,it is evident that the system has been used by different types of information terminals just as it was designed for,and that the system has been used according to the purpose of the present study,which is to support the sightseeing activities of users.However,the number of visits to pages related to the evaluation function of sightseeing spots and submitting function of new sightseeing spot information was low.This may improve if the system operation is conducted on a long-term basis.
文摘A new network protocol (Demand Priority Protocol) environmentcan provide more satisfying service for different urgent transmission requests. Inthis paper, in order to provide guidance for the selection of environment of multimedia data transmission in Computer Supported Cooperative Work better, an objectoriented protocol specification language based on C++ is used to design a virtualenvironment of multiworkstation of computer cooperative work and to simulate execution of demand priority network protocol and then the performances of varioustransmission requests are analyzed. Finally, an evaluation of the demand priorityLAN is given.
文摘By adopting the evaluation index system of conservation priority which included threatened coefficient,genetic coefficient,utilization coefficient, protection status coefficient and list status coefficient,the endangered plants in Northeast China were quantitatively analyzed and synthetically evaluated,and the value of conservation priority and conservation priority grades of the endangered plants were determined.The results showed that there were 60 species of endangered plants belonging to 42 genera and 25 families in Northeast China,the value of conservation priority ranged from 0.853 8-0.318 4.The endangered plants were divided into 3 grades according to their values of conservation priority, 17 species belonging to 15 genera and 11 families were in the first grade protection,18 species belonging to 14 genera and 11 families were in the second grade protection,25 species belonging to 17 genera and 13 families were in the third grade protection.The quantitatively evaluation index system of conservation priority in this paper represented the degree of conservation priority of the endangered plants comprehensively,objectively and accurately.
