Role based access control is one of the widely used access control models.There are investigations in the literature that use knowledge representation mechanisms such as formal concept analysis(FCA),description logics...Role based access control is one of the widely used access control models.There are investigations in the literature that use knowledge representation mechanisms such as formal concept analysis(FCA),description logics,and Ontology for representing access control mechanism.However,while using FCA,investigations reported in the literature so far work on the logic that transforms the three dimensional access control matrix into dyadic formal contexts.This transformation is mainly to derive the formal concepts,lattice structure and implications to represent role hierarchy and constraints of RBAC.In this work,we propose a methodology that models RBAC using triadic FCA without transforming the triadic access control matrix into dyadic formal contexts.Our discussion is on two lines of inquiry.We present how triadic FCA can provide a suitable representation of RBAC policy and we demonstrate how this representation follows role hierarchy and constraints of RBAC on sample healthcare network available in the literature.展开更多
Role mining and setup affect the usage of role-based access control(RBAC).Traditionally,user's role and permission assigning are manipulated by security administrator of system.However,the cost is expensive and th...Role mining and setup affect the usage of role-based access control(RBAC).Traditionally,user's role and permission assigning are manipulated by security administrator of system.However,the cost is expensive and the operating process is complex.A new role analyzing method was proposed by generating mappings and using them to provide recommendation for systems.The relation among sets of permissions,roles and users was explored by generating mappings,and the relation between sets of users and attributes was analyzed by means of the concept lattice model,generating a critical mapping between the attribute and permission sets,and making the meaning of the role natural and operational.Thus,a role is determined by permission set and user's attributes.The generated mappings were used to automatically assign permissions and roles to new users.Experimental results show that the proposed algorithm is effective and efficient.展开更多
With continuing advances in technology, computer-assisted instruction provides opportunities for individualized, interactive instruction. The philosophy of constructivism has encouraged instructional designers to crea...With continuing advances in technology, computer-assisted instruction provides opportunities for individualized, interactive instruction. The philosophy of constructivism has encouraged instructional designers to create less behavioral, more democratic programs that promote learner control. In the area of ESL (English as a second language), computers are seen to be a highly motivating, instructional tool.展开更多
To accelerate the selection process of feature subsets in the rough set theory （RST）, an ensemble elitist roles based quantum game （EERQG） algorithm is proposed for feature selec- tion. Firstly, the multilevel eli...To accelerate the selection process of feature subsets in the rough set theory （RST）, an ensemble elitist roles based quantum game （EERQG） algorithm is proposed for feature selec- tion. Firstly, the multilevel elitist roles based dynamics equilibrium strategy is established, and both immigration and emigration of elitists are able to be self-adaptive to balance between exploration and exploitation for feature selection. Secondly, the utility matrix of trust margins is introduced to the model of multilevel elitist roles to enhance various elitist roles＇ performance of searching the optimal feature subsets, and the win-win utility solutions for feature selec- tion can be attained. Meanwhile, a novel ensemble quantum game strategy is designed as an intriguing exhibiting structure to perfect the dynamics equilibrium of multilevel elitist roles. Finally, the en- semble manner of multilevel elitist roles is employed to achieve the global minimal feature subset, which will greatly improve the fea- sibility and effectiveness. Experiment results show the proposed EERQG algorithm has superiority compared to the existing feature selection algorithms.展开更多
Cotton(Gossypium hirsutum L.) fibers,one of the most important natural raw materials for the textile industry,are highly elongated trichomes from epidermal cells of cotton ovules.Among the longest plant cells ever cha...Cotton(Gossypium hirsutum L.) fibers,one of the most important natural raw materials for the textile industry,are highly elongated trichomes from epidermal cells of cotton ovules.Among the longest plant cells ever characterized,cotton fiber is an ideal system for studying plant cell elongation.展开更多
Traditional data envelopment analysis（DEA） theory assumes that decision variables are regarded as inputs or outputs,and no variable can play the roles of both an input and an output at the same time.In fact,there ex...Traditional data envelopment analysis（DEA） theory assumes that decision variables are regarded as inputs or outputs,and no variable can play the roles of both an input and an output at the same time.In fact,there exist some variables that work as inputs and outputs simultaneously and are called dual-role variables.Traditional DEA models cannot be used to appraise the performance of decision making units containing dual-role variables.The paper analyzes the structure and properties of the production systems comprising dual-role variables,and proposes a DEA model integrating dual-role variables.Finally the proposed model is illustrated to evaluate the efficiency of university departments.展开更多
Research has shown that groundwater plays a very great role in Malawi.It has been revealed that many people who live in rural areas in Malawi depend on groundwater for drinking and other domestic uses. According to re...Research has shown that groundwater plays a very great role in Malawi.It has been revealed that many people who live in rural areas in Malawi depend on groundwater for drinking and other domestic uses. According to research which was conducted in Malawi using focus group discussion,observations and other data sources collected from other展开更多
Introduction Hematogenous metastasis is the mainly leading cause of death in breast carcinoma patients.A better understanding of the underlying molecular and cellular mechanisms is crucial for the development of effec...Introduction Hematogenous metastasis is the mainly leading cause of death in breast carcinoma patients.A better understanding of the underlying molecular and cellular mechanisms is crucial for the development of effective treatment for metastatic breast cancer<sup>[</sup>1].It has been well established that cell adhesion and invasion is mediated by a variety of transmembrane proteins,including integrins,cadherins,selectins,and intercellular adhesion molecules.Among these adhesion molecules,the integrins and their downstream signaling pathways have been extensively studied<sup>[2]</sup>.On the other hand,the specific events determining tumor cell interactions with endo-展开更多
Work-team has emerged as an important unit composi ng the organization today. The concepts relating to the properties of team-role t hat fit with today’s business environment have attracted much attention from the th...Work-team has emerged as an important unit composi ng the organization today. The concepts relating to the properties of team-role t hat fit with today’s business environment have attracted much attention from the theorists and researchers. A team having a balanced composition of team-ro les is called a balanced team. Theoretically, a balanced team usually renders a better team performance. Therefore, to improve the performance of the team, mana gement needs to ensure that their work teams are composed of appropriate team me mbers with complementary skills, playing different roles, together forming a bal anced team. However, in certain situation, a balanced team can hardly be formed. For example , companies in Hong Kong are mostly the small-to-medium sized enterprises. The number of team-members is usually smaller than the required number for formula ting a balanced team. Also, as team members are required to travel often across borders, stable team can hardly be maintained. To resolve this problem, a different paradigm of team-role prevails here. Team -members autonomously supplant the roles of those missing members. We call this phenomenon the kinetic team role behavior. By using the methodology adopted from psychotherapy study, we propose a way to investigate this interesting and important characteristics of team-role.展开更多
The development and maintenance of an abundant blood supply is essential for the healing of wound and neoplastic tissues.Angiogenesis,the development of new vessels from adjacent capillary networks,plays an important ...The development and maintenance of an abundant blood supply is essential for the healing of wound and neoplastic tissues.Angiogenesis,the development of new vessels from adjacent capillary networks,plays an important role in physiologic and as well as in展开更多
Introduction The Transjugular Intra-hepatic Porto-Systemic Shunt(TIPS)was introduced in the early 1990's by Josef Rosch.It rapidly gained popularity in the US where at that time we were performing many per week.Or...Introduction The Transjugular Intra-hepatic Porto-Systemic Shunt(TIPS)was introduced in the early 1990's by Josef Rosch.It rapidly gained popularity in the US where at that time we were performing many per week.Originally,it was utilized to treat variceal hemorrhage with good results but,over time, endoscopic banding procedures have become better and the shunt has fallen into relative disfavor due to its higher than expected closure rate.In the ensuing fifteen years,there have been many changes in the approach to the treatment of portal hypertension and more specific role for this specialized procedure.展开更多
Manufacturing of a product is constituted of the va ri ous attributes such as quality, cost, performance, and time to market. Manufactu ring can also be understood as the entire product realization process, from spec ...Manufacturing of a product is constituted of the va ri ous attributes such as quality, cost, performance, and time to market. Manufactu ring can also be understood as the entire product realization process, from spec ification through design and production to marketing and distribution. The induc tion of Information Technology (IT) in manufacturing includes the hardware that computes and communicates, the software that provides data, knowledge, and infor mation while at the same time controlling the hardware, and the interfaces betwe en computers and the tools and machines on the shop floor. The manufacturing pro cess utilizes IT in the design of products and processes, production, and manufa cturing-related business practices. IT applications applied to manufacturing helps in rapid shifts in production fro m one product to another, faster implementation of new concepts in products, fas ter delivery of products to customers, full utilization of capital and human res ources, streamlining of operations to focus on essential business needs, and eli mination of unnecessary or wasteful activities. IT can be used to meet a range of needs of manufacturing decision makers. It can be said that IT is an enabler and facilitator of radical change to culture of manufacturing which is highly co nservative for many good reasons. With increasing global competition, applications of global information technolog y is giving manufacturing unit an opportunity to increase control and enhance co ordination, while opening doors to new global markets and businesses. In some st udies conducted it ahs been shown that how information technology can produce pr oductivity gains and job losses in specific areas, whereas dynamic stability was also achieved through IT in some cases. In a study of an industry the IT has cu t manufacturers cost from eProcurement to web based supply chain management and after sales service. IT has certainly revolutionized the manufacturing and the i ndustries have completely redefined their business by switching over to World Wi de Web. This paper, attempts to review the significant advances and practical applicatio ns of information technology in the field of manufacturing.展开更多
Gold Medals in Summer Qlympics Measures A 1) Program to develop junior athletes to top level 2) National Training Center 3) National Coach Academy B 1) Sports medicine and sciences(JISS) 2) Anti-doping 3) To hold inte...Gold Medals in Summer Qlympics Measures A 1) Program to develop junior athletes to top level 2) National Training Center 3) National Coach Academy B 1) Sports medicine and sciences(JISS) 2) Anti-doping 3) To hold international展开更多
Mr. President, Ambassador, everyone, ladies and gentlemen,it is a great pleasure to be with you here at Shanghai Institutes for International Studies. Thank you, Mr. President for
This article has presented some stereotypical views held by Western people about Chinese teachers,and then clarified these misperceptions caused by Western people's different understanding of the meanings of "...This article has presented some stereotypical views held by Western people about Chinese teachers,and then clarified these misperceptions caused by Western people's different understanding of the meanings of "teacher authority","double parental identities",and"strictness"compared to their Chinese counterparts.Then a case study of three Chinese student teachers studying in one Australian university is conducted to analyze their feelings and experiences of teaching in Australia.Finally,the study suggests that Chinese teacher must retain the essence of Chinese good teachers while adopting the advantages of Western teaching culture to improve his / her own teaching practice,and if so,these self changes could be significant to recreate themselves as new Chinese teachers.展开更多
基金the financial support from Department of Science and Technology,Government of India under the grant:SR/CSRI/118/2014
文摘Role based access control is one of the widely used access control models.There are investigations in the literature that use knowledge representation mechanisms such as formal concept analysis(FCA),description logics,and Ontology for representing access control mechanism.However,while using FCA,investigations reported in the literature so far work on the logic that transforms the three dimensional access control matrix into dyadic formal contexts.This transformation is mainly to derive the formal concepts,lattice structure and implications to represent role hierarchy and constraints of RBAC.In this work,we propose a methodology that models RBAC using triadic FCA without transforming the triadic access control matrix into dyadic formal contexts.Our discussion is on two lines of inquiry.We present how triadic FCA can provide a suitable representation of RBAC policy and we demonstrate how this representation follows role hierarchy and constraints of RBAC on sample healthcare network available in the literature.
基金Project(61003140) supported by the National Natural Science Foundation of ChinaProject(013/2010/A) supported by Macao Science and Technology Development FundProject(10YJC630236) supported by Social Science Foundation for the Youth Scholars of Ministry of Education of China
文摘Role mining and setup affect the usage of role-based access control(RBAC).Traditionally,user's role and permission assigning are manipulated by security administrator of system.However,the cost is expensive and the operating process is complex.A new role analyzing method was proposed by generating mappings and using them to provide recommendation for systems.The relation among sets of permissions,roles and users was explored by generating mappings,and the relation between sets of users and attributes was analyzed by means of the concept lattice model,generating a critical mapping between the attribute and permission sets,and making the meaning of the role natural and operational.Thus,a role is determined by permission set and user's attributes.The generated mappings were used to automatically assign permissions and roles to new users.Experimental results show that the proposed algorithm is effective and efficient.
文摘With continuing advances in technology, computer-assisted instruction provides opportunities for individualized, interactive instruction. The philosophy of constructivism has encouraged instructional designers to create less behavioral, more democratic programs that promote learner control. In the area of ESL (English as a second language), computers are seen to be a highly motivating, instructional tool.
基金supported by the National Natural Science Foundation of China(6113900261171132+4 种基金61300167)the Natural Science Foundation of Jiangsu Education Department(12KJB520013)the Open Project Program of Jiangsu Provincial Key Laboratory of Computer Information Processing Technologythe Qing Lan Project of Jiangsu Provincethe Starting Foundation for Doctoral Scientific Research,Nantong University(14B20)
文摘To accelerate the selection process of feature subsets in the rough set theory （RST）, an ensemble elitist roles based quantum game （EERQG） algorithm is proposed for feature selec- tion. Firstly, the multilevel elitist roles based dynamics equilibrium strategy is established, and both immigration and emigration of elitists are able to be self-adaptive to balance between exploration and exploitation for feature selection. Secondly, the utility matrix of trust margins is introduced to the model of multilevel elitist roles to enhance various elitist roles＇ performance of searching the optimal feature subsets, and the win-win utility solutions for feature selec- tion can be attained. Meanwhile, a novel ensemble quantum game strategy is designed as an intriguing exhibiting structure to perfect the dynamics equilibrium of multilevel elitist roles. Finally, the en- semble manner of multilevel elitist roles is employed to achieve the global minimal feature subset, which will greatly improve the fea- sibility and effectiveness. Experiment results show the proposed EERQG algorithm has superiority compared to the existing feature selection algorithms.
文摘Cotton(Gossypium hirsutum L.) fibers,one of the most important natural raw materials for the textile industry,are highly elongated trichomes from epidermal cells of cotton ovules.Among the longest plant cells ever characterized,cotton fiber is an ideal system for studying plant cell elongation.
基金supported by the National Natural Science Foundation of China (7082100170801056)
文摘Traditional data envelopment analysis（DEA） theory assumes that decision variables are regarded as inputs or outputs,and no variable can play the roles of both an input and an output at the same time.In fact,there exist some variables that work as inputs and outputs simultaneously and are called dual-role variables.Traditional DEA models cannot be used to appraise the performance of decision making units containing dual-role variables.The paper analyzes the structure and properties of the production systems comprising dual-role variables,and proposes a DEA model integrating dual-role variables.Finally the proposed model is illustrated to evaluate the efficiency of university departments.
文摘Research has shown that groundwater plays a very great role in Malawi.It has been revealed that many people who live in rural areas in Malawi depend on groundwater for drinking and other domestic uses. According to research which was conducted in Malawi using focus group discussion,observations and other data sources collected from other
基金The financial supports provided,in whole or in part,by the National Natural Science Foundation of China(11272083)the New Century Excellent Talents Program in Chinese Universities(NCET09-0263)
文摘Introduction Hematogenous metastasis is the mainly leading cause of death in breast carcinoma patients.A better understanding of the underlying molecular and cellular mechanisms is crucial for the development of effective treatment for metastatic breast cancer<sup>[</sup>1].It has been well established that cell adhesion and invasion is mediated by a variety of transmembrane proteins,including integrins,cadherins,selectins,and intercellular adhesion molecules.Among these adhesion molecules,the integrins and their downstream signaling pathways have been extensively studied<sup>[2]</sup>.On the other hand,the specific events determining tumor cell interactions with endo-
文摘Work-team has emerged as an important unit composi ng the organization today. The concepts relating to the properties of team-role t hat fit with today’s business environment have attracted much attention from the theorists and researchers. A team having a balanced composition of team-ro les is called a balanced team. Theoretically, a balanced team usually renders a better team performance. Therefore, to improve the performance of the team, mana gement needs to ensure that their work teams are composed of appropriate team me mbers with complementary skills, playing different roles, together forming a bal anced team. However, in certain situation, a balanced team can hardly be formed. For example , companies in Hong Kong are mostly the small-to-medium sized enterprises. The number of team-members is usually smaller than the required number for formula ting a balanced team. Also, as team members are required to travel often across borders, stable team can hardly be maintained. To resolve this problem, a different paradigm of team-role prevails here. Team -members autonomously supplant the roles of those missing members. We call this phenomenon the kinetic team role behavior. By using the methodology adopted from psychotherapy study, we propose a way to investigate this interesting and important characteristics of team-role.
基金supported by grant from National Natural Science Foundation of China No10772127,30570450Program for New Century Excellent Talents in University NCET-06-0789Sichaun Youth Science and Technology Foundation 06ZQ026-009
文摘The development and maintenance of an abundant blood supply is essential for the healing of wound and neoplastic tissues.Angiogenesis,the development of new vessels from adjacent capillary networks,plays an important role in physiologic and as well as in
文摘Introduction The Transjugular Intra-hepatic Porto-Systemic Shunt(TIPS)was introduced in the early 1990's by Josef Rosch.It rapidly gained popularity in the US where at that time we were performing many per week.Originally,it was utilized to treat variceal hemorrhage with good results but,over time, endoscopic banding procedures have become better and the shunt has fallen into relative disfavor due to its higher than expected closure rate.In the ensuing fifteen years,there have been many changes in the approach to the treatment of portal hypertension and more specific role for this specialized procedure.
文摘Manufacturing of a product is constituted of the va ri ous attributes such as quality, cost, performance, and time to market. Manufactu ring can also be understood as the entire product realization process, from spec ification through design and production to marketing and distribution. The induc tion of Information Technology (IT) in manufacturing includes the hardware that computes and communicates, the software that provides data, knowledge, and infor mation while at the same time controlling the hardware, and the interfaces betwe en computers and the tools and machines on the shop floor. The manufacturing pro cess utilizes IT in the design of products and processes, production, and manufa cturing-related business practices. IT applications applied to manufacturing helps in rapid shifts in production fro m one product to another, faster implementation of new concepts in products, fas ter delivery of products to customers, full utilization of capital and human res ources, streamlining of operations to focus on essential business needs, and eli mination of unnecessary or wasteful activities. IT can be used to meet a range of needs of manufacturing decision makers. It can be said that IT is an enabler and facilitator of radical change to culture of manufacturing which is highly co nservative for many good reasons. With increasing global competition, applications of global information technolog y is giving manufacturing unit an opportunity to increase control and enhance co ordination, while opening doors to new global markets and businesses. In some st udies conducted it ahs been shown that how information technology can produce pr oductivity gains and job losses in specific areas, whereas dynamic stability was also achieved through IT in some cases. In a study of an industry the IT has cu t manufacturers cost from eProcurement to web based supply chain management and after sales service. IT has certainly revolutionized the manufacturing and the i ndustries have completely redefined their business by switching over to World Wi de Web. This paper, attempts to review the significant advances and practical applicatio ns of information technology in the field of manufacturing.
文摘Gold Medals in Summer Qlympics Measures A 1) Program to develop junior athletes to top level 2) National Training Center 3) National Coach Academy B 1) Sports medicine and sciences(JISS) 2) Anti-doping 3) To hold international
文摘Mr. President, Ambassador, everyone, ladies and gentlemen,it is a great pleasure to be with you here at Shanghai Institutes for International Studies. Thank you, Mr. President for
文摘This article has presented some stereotypical views held by Western people about Chinese teachers,and then clarified these misperceptions caused by Western people's different understanding of the meanings of "teacher authority","double parental identities",and"strictness"compared to their Chinese counterparts.Then a case study of three Chinese student teachers studying in one Australian university is conducted to analyze their feelings and experiences of teaching in Australia.Finally,the study suggests that Chinese teacher must retain the essence of Chinese good teachers while adopting the advantages of Western teaching culture to improve his / her own teaching practice,and if so,these self changes could be significant to recreate themselves as new Chinese teachers.
