我国矿业权的产权属性研究

本文在明确矿业权定义的基础上,回顾了我国矿业权的沿革,阐明了我国矿业权的法律特征,论述了矿业权与矿产资源所有权的关系。     

对"旅游需求"概念及其影响因子分析的深度认识

以“旅游需求”教学内容为研究对象，在对目前教材中混淆“旅游需求”与“旅游需求量”现象进行澄清的基础上，对已有的三种定义进行了利弊剖析，进而从旅游活动发生过程和社会进步角度，对旅游需求的因子进行了梳理和约束强弱分析。通过讨论文章指出，对旅游需求的认识不能简单化和静止化。     

Trade-off Model of Debt Maturity Structure

In this paper, we suggest the trade-off model to explain the choice of debt maturity. This model is based on balancing between risk and reward of using shorter-term loans. Shorter-term loans have cost advantage over, but incur higher refinancing and interest rate risk than longer-term loans. Using the Compustat data, we show that the principal components of financial attributes are financial flexibility and financial strength. Therefore, only firms with greater financial flexibility and financial strength can use proportionately more short-term loans. We also document that financially strong firms take advantage of lower interest rates of short-term debt. They use proportionately more short-term loans when the term premium is high. The results of our study also provide evidence supporting the agency cost hypothesis, which is strongly supported by current literature.     

油气管道完整性评价的数据支持系统

开发了管道完整性评价的数据库系统，介绍了该软件系统的结构、模块、特点、主要功能和操作界面。     

曲面响应法预测砂浆性能的试验研究

本试验以砂浆性能为研究对象,采用Box-Behnken的中心组合实验设计及响应面分析方法对腻子粘结强度进行预测研究。试验选用三因素三水平的响应曲面分析法,建立了粘结强度的二次多项数学模型,并以粘结强度为响应值作响应面和等高线,考察了水粉比、灰粉比和胶粉比对粘结强度的影响,并根据实际选择响应曲面方程,利用最小二乘法估计相应的系数,剔除最不显著因素,建立最终的数学方程。结果表明:该预测模型能很好地描述粘结强度与水粉比、灰粉比和胶粉比之间的关系,可以对腻子粘结强度进行分析和预测,为砂浆性能研究提供一种新方法。     

低应变反射波法在PHC管桩完整性检测中的应用分析

根据低应变反射波法检测高强度预应力混凝土管桩(PHC)桩身完整性的原理,通过具体工程实例对低应变反射波检测PHC管桩有关问题进行了分析探讨。     

Intelligent agents for adaptive security market surveillance

Market surveillance systems have increasingly gained in usage for monitoring trading activities in stock markets to maintain market integrity. Existing systems primarily focus on the numerical analysis of market activity data and generally ignore textual information. To fulfil the requirements of information-based surveillance, a multi-agent-based architecture that uses agent intercommunication and incremental learning mechanisms is proposed to provide a flexible and adaptive inspection process. A prototype system is implemented using the techniques of text mining and rule-based reasoning, among others. Based on experiments in the scalping surveillance scenario, the system can identify target information evidence up to 87.50% of the time and automatically identify 70.59% of cases depending on the constraints on the available information sources. The results of this study indicate that the proposed information surveillance system is effective. This study thus contributes to the market surveillance literature and has significant practical implications.     

企业如何利用社会网络提升吸收能力

在知识经济的背景下,吸收能力被认为是企业提升绩效和增强创新的战略能力.社会网络被认为可以对潜在的吸收能力和实现的吸收能力都产生积极影响.本文从社会网络的关系层面,从外部和内部两个视角,分别阐述了社会网络如何影响吸收能力的两个维度.本文还从提升吸能力的视角,提出了有效构建和维护社会网络的措施.     

Schema strength,processing opportunity,and the rewarding nature of incongruity resolution in advertising

Extant literature calls for more research to identify the boundary conditions as well as the process underlying the effects of ad messages that violate specific brand beliefs. This paper examines different levels of ad–brand incongruity, considering brand schema strength and processing opportunity as factors that influence the perception and the resolution of incongruity. Moreover, it provides empirical evidence for the process mediating attitudinal responses to ad–brand incongruity. Experiment 1 shows superiority for moderately incongruent ads over congruent and extremely incongruent ads which is eliminated when participants have a weak, as opposed to a strong, brand schema. Experiment 2 replicates the nonmonotonic pattern for strong, real brands but further shows that low processing opportunity favors congruent ads. Mediation analysis reveals that the psychological satisfaction experienced during the ad interpretation process has an asymmetric mediating effect, such that moderate levels of ad–brand incongruity generate highest levels of satisfaction which then leads to more positive responses.     

Development and transformation of collaborative networks in events

This study examines the mechanisms by which and the reasons that leaders of non-profit organizations transform interorganizational collaborative networks through event attendance. Drawing from a two-wave survey, this study examines the interorganizational networks of 30 individuals who participated in both waves, along with the reported activities of 121 individuals who participated in the second wave of the survey. This mixed methods study found that events transformed participants’ weak ties into strong ties and promoted development of collaborative networks. Further, the study found that participants’ motivations for attending the event and following up with contacts afterward focused on sharing resources and deepening connections. Implications for understanding how events promote formation and transformation of collaborative networks are discussed.