Bidding strategies in online single-unit auctions: Their impact and satisfaction

Online bidders use different strategies in their biddings. However, we are unsure of the bidders strategies and their effectiveness in achieving auction goals. Our study was an attempt to identify bidding strategies empirically in online single-unit auctions and evaluate their outcome in terms of cost saving, perceived bidder enjoyment, and bidder satisfaction. A research model was developed and used to examine the relationships. Both objective and subjective data of online single-unit auctions were collected from Taobao.com to validate our postulated hypotheses. We found three main bidding strategies: early, snipe, and agent-supported ratchet bidding based on their behavior patterns. These resulted in different levels of winning outcome and cost saving, but had no significant effect on perceived enjoyment. The hypotheses of the relationship between auction outcomes and bidder satisfaction of their bidding strategies were confirmed.     

动态约束满足及其在资源调度问题中的应用

论文系统地论述了动态约束满足技术的基本理论与方法,建立了动态约束满足技术的基本分析框架,给出了动态约束满足在Job-Shop问题中的应用实例。     

第三方物流企业关键绩效管理

该研究从第三方物流企业的服务性行业性质出发,在供应链的环境中考察不同顾客对物流绩效的不同需求,提出绩效管理必须以顾客满意为导向的关键绩效管理(CTP)思想.第三方物流企业以顾客满意为导向的关键绩效管理,从顾客满意度出发,通过分析物流企业的关键业务流程,研究影响顾客满意度的企业内部因素,指出物流质量、成本、周期以及系统柔性是影响顾客满意度的四个关键因素,并由此四个维度总结出第三方物流企业的关键绩效指标及绩效评价函数.最后,通过对第三方汽车物流企业的实证研究进一步说明以顾客满意为导向的绩效管理方法的实际应用.     

基于用户行为的长查询用户满意度分析

搜索引擎性能评估是信息检索界一个重要课题.长查询具有较为丰富的信息内容,能更加准确地描述用户的信息需求.在此基础上文中提出长查询用户满意度分析的整体框架,定义用户满意度的概念,并在用户日志中提取相关用户行为特征,应用决策树和SVM两种分类算法评测用户满意度.在大规模商业搜索引擎日志上完成的实验结果证明了这套评价体系的有效性.结果表明,用户对于查询满意和不满意的分类准确率分别达到86％和70％.     

The physical environment in museums and its effects on visitors’ satisfaction

In this study, a comprehensive inquiry has been made into what effect the physical environment of museums has had upon visitors’ satisfaction. Thirty museums mainly located in Seoul, South Korea, and the vicinity were selected for this study. A total of 760 visitors were asked to complete a questionnaire. The data gathered from the questionnaire survey and by observation of the participants were analyzed by factor analysis, regression analysis and path analysis. The results are as follows: (1) Using factor analysis, the physical characteristics of the museum environment were categorized into three subgroups such as the exhibition environment, the ambient environment and museum size. (2) Among these factors, the exhibition environment was the main factor that had the biggest effect on satisfaction. (3) The ambient environment had an indirect effect on satisfaction, but it did not have a pronounced effect. (4) The size of the museum had a slight direct effect on satisfaction, but its effect was mainly on the mental and physical fatigue felt by the visitors.     

灵活准则地面测控资源约束满足模型研究

针对地面测控资源调度中复杂约束难以描述的问题,对地面测控资源及用户需求进行详细分析。将任务分解为阶段性的需求集合,用一种时序性约束描述各类需求间的逻辑关系,给出包括设备匹配约束、时间窗口约束、地面站冲突约束、卫星竞争约束、时序逻辑约束、星载可再生资源约束六类约束的表示方法。针对不同用户从资源利用,任务完成等角度提出的需求偏好,设计了任务优先级,任务集中以及设备均衡三类原则,并进行仿真验证。初步实现了地面测控资源调度的复杂约束建模,为灵活需求偏好提供了一种设计思路。     

基于满意度准则采用混合波束成型预编码的调度方法

为了满足未来无线宽带网络中多种服务质量(QoS)要求业务并存的需求,该文提出一种多天线下行系统中结合混合波束成型预编码技术基于满意度的调度方法。该调度方法联合考虑用户的QoS要求及其信道质量,灵活地使用随机波束成型和迫零波束成型预编码技术,并通过惩罚机制避免特定用户占用超出其需求的带宽,更有效地为用户分配令其满意的资源,使各种QoS要求的用户获得满意的服务。仿真结果证明,与现有的方法相比,该文提出的方法在保证用户服务质量的同时,能更好地利用系统资源。     

Determining factors affecting customer satisfaction of the national electric power company (MERALCO) during the COVID-19 pandemic in the Phillippines

This study aimed to determine factors affecting customer satisfaction of national electric power companies during the COVID-19 pandemic by integrating SERVQUAL and Expectation-Confirmation Theory approaches. A total of 529 participants voluntarily participated and answered an online questionnaire of 49 questions. Structural equation modeling indicated that Tangibility, Empathy, and Responsiveness were positively related to Service Quality which subsequently led to Customer Expectation, Energy Consumption, and Perceived Performance (PE). In addition, a higher PE was positively related to Confirmation, which eventually led to Customer Satisfaction. It was evident that integrating SERVQUAL and ECT could holistically measure customer satisfaction among electricity service providers.     

基于有序PROBIT模型的历史文化街区风貌满意度研究

以大召历史文化街区为研究对象，在构 建风貌要素指标体系的基础上，采用民众风貌 感知数据，运用有序Probit模型、边际效用分析 与I-S评分法，研究风貌要素满意度对总体风貌 满意度的影响机理，以此对风貌改造工作提出 精准建议。结果表明：街道服务设施特点、灯光 照明、景观特点与历史文化之“风”四个风貌要 素满意度对总体风貌满意度具有显著影响；相 比于男性，女性对街区风貌的要求更高，更不容 易被满足；风貌要素优先提升权从高到低依次 为街道服务设施特点、灯光照明、景观特点与历 史文化之“风”