An approach to make heterogeneous devices cooperate with each other to provide ubiquitous service remains a longstanding challenge in ubiquitous environments. In addition, when multi-user request ubiquitous services s...An approach to make heterogeneous devices cooperate with each other to provide ubiquitous service remains a longstanding challenge in ubiquitous environments. In addition, when multi-user request ubiquitous services simultaneously, the arbitrariness in resource allocation process easily leads to non-equilibrium of qualities of multiuser's services. Thus, How to design an effective heterogeneous devices cooperation mechanism that meet the QoS requirements and also equilibrate QoS among multi-user's services becomes a very tough problem. In the paper, Equilibrium Index and Theil Utility function are imported to establish a multidevice equilibrium cooperation model, which is benefit for resource allocation in ubiquitous environments. Then a Theil-Equilibrium based Cooperation Mechanism for multi-service is proposed. Firstly, in order to simplify calculating, a dimensionless processing is introduced. After that, a cooperation approach with Theil-Utility Heuristic algorithm is designed to choose the best solution for the simplified model. At last, the mechanism is simulated in a smart home scenario. The simulation results show that this mechanism outperforms non-equilibrium method by improving almost 40% in internal equilibrium with just reducing 0-2% in the total utility ofall the requested ubiquitous services. These data show that the proposed mechanism performs well in equilibrating qualities of multi-user's ubiquitous services.展开更多
惠州26-6构造目的层面临流体类型复杂、流体判识难度大的问题,而传统气测录井方法受仪器精度影响,凝析气与轻质油的气测录井响应差异不明显。针对上述复杂问题,基于实时流体录井(fluids logging&analysis in real-time,FLAIR)资料,...惠州26-6构造目的层面临流体类型复杂、流体判识难度大的问题,而传统气测录井方法受仪器精度影响,凝析气与轻质油的气测录井响应差异不明显。针对上述复杂问题,基于实时流体录井(fluids logging&analysis in real-time,FLAIR)资料,在统计区域内气层、凝析气层及油层的烃组分比值特征基础上,优选烃组分参数,结合测井、取样及测试资料,提出了研究区目的层潜山气油界面划分及流体识别技术体系。研究表明:FLAIR烃湿度比(humidity ratio,WH)、烃平衡比(equilibrium ratio,BH)建立定性流体识别图版可以较好地识别凝析气组分和轻质油响应,凝析气的烃组分甲烷(methane,C_(1))、乙烷(ethane,C_(2))占比高,而轻质油的烃组分丙烷(propane,C_(3))、丁烷(butane,C_(4))、戊烷(pentane,C_(5))、己烷(hexane,C_(6))占比高;利用气油比指数R与测试、电缆泵抽取样气油比建立关系模型。结果表明,干气:BH>20,WH<11,气油比指数R>61.54;凝析气:BH>15,WH<19,气油比指数R介于2.16~61.54;油:BH<15,WH>19,气油比指数R<2.16。通过两种方法相结合,有效解决了研究区目的层潜山气油界面划分及流体识别难题,证实该方法在复杂储集层及流体条件下具有广泛的推广应用价值。展开更多
基金partially supported by the Funds for Creative Research Groups of China(61121061)National Natural Science Foundation of China(61302078,61272515)+3 种基金863 Program(2011AA01A102)Ph.D.Programs Foundation of Ministry of Education of China(20110005110011)Beijing Higher Education Young Elite Teacher Project(YETP0476)Fundamental Research Funds for the Central Universities(2012RC0609)
文摘An approach to make heterogeneous devices cooperate with each other to provide ubiquitous service remains a longstanding challenge in ubiquitous environments. In addition, when multi-user request ubiquitous services simultaneously, the arbitrariness in resource allocation process easily leads to non-equilibrium of qualities of multiuser's services. Thus, How to design an effective heterogeneous devices cooperation mechanism that meet the QoS requirements and also equilibrate QoS among multi-user's services becomes a very tough problem. In the paper, Equilibrium Index and Theil Utility function are imported to establish a multidevice equilibrium cooperation model, which is benefit for resource allocation in ubiquitous environments. Then a Theil-Equilibrium based Cooperation Mechanism for multi-service is proposed. Firstly, in order to simplify calculating, a dimensionless processing is introduced. After that, a cooperation approach with Theil-Utility Heuristic algorithm is designed to choose the best solution for the simplified model. At last, the mechanism is simulated in a smart home scenario. The simulation results show that this mechanism outperforms non-equilibrium method by improving almost 40% in internal equilibrium with just reducing 0-2% in the total utility ofall the requested ubiquitous services. These data show that the proposed mechanism performs well in equilibrating qualities of multi-user's ubiquitous services.