中国转基因食品安全管理的现状及对策

转基因食品是当今世界各国基因研究的重点。我国的转基因技术发展迅速,但科学界在转基因食品对人类健康和生态风险方面的认识存在局限性,政府应制定相应的政策、措施对其进行安全管理。本文介绍了转基因食品的概念及在我国的发展情况,分析了我国转基因食品安全管理的现状,阐述了转基因食品安全管理的重要性,并针对其中存在的问题,提出相应的对策。     

An evaluation framework for developing green infrastructure by using a new hybrid multiple attribute decision-making model for promoting environmental sustainability

With the expansion of urbanization caused by the growth of population and industrial activities, the urban/city and suburban areas are facing a variety of environmental threats. Although more research and urban policy has advocated and practiced the development of green infrastructure (GI) to support urban sustainable environment, the evaluation framework for the development of GI for promoting environmental sustainability is still insufficient. Moreover, the Analytic Hierarchy Process (AHP) commonly applied in published literature, makes an unrealistic assumption of independent relationships among dimensions/criteria in decision making for satisfying the real-world problem. Therefore, the purpose of this study is to construct the evaluation framework, including four dimensions and related ten criteria, using a new hybrid-modified multiple attribute decision-making (MADM) model for developing and improving the GI for promoting environmental sustainability. This MADM model is combined with three different methodologies of MADM, including the Decision-Making Trial and Evaluation Laboratory (DEMATEL) for constructing the influential network relation map (INRM) to explore the complex influential inter-relationships and DEMATEL based on Analytic Network Process (DANP) for determining the influential weights with the VIse Kriterijumska Optimizacija I Kompromisno Resenje (VIKOR) for evaluating and presenting improvement strategies for six different GIs. The empirical study indicates that DEMATEL and DANP Results suggest that decision-makers should pay more attention to the improvement of Design (D₄) and Materials (D₂) in terms of dimensions when utilizing the GI to promote environmental sustainability. Because these dimensions are enhanced, Species (D₁) and Energy (D₃) will be improved in synchronization. From the perspective of criteria, five are key core criteria and need to be focused on first: increasing the green coverage rate (B₉), utilizing sustainable materials (B₄), using ecological engineering (B₈), shaping species biodiversity (B₁), and reducing energy consumption (B₅). Modified VIKOR reveals that “grass swales” are a comparatively better choice among six GIs for promoting environmental sustainability toward achieving the aspiration level. Therefore, this MADM model is beneficial to provide a more convincing assessment framework and improvement strategies for the development of GI for promoting environmental sustainability. As a result, these modified MADM models can be shown more conveniently and reasonably than traditional methods such as traditional AHP or ANP method.     

Analysis of the adoption of customer facing InStore technologies in retail SMEs

Brick and mortar stores are suffering the dramatic revolution of the retail sector. Customer facing in-store technologies (CFIST) are a key component of the inevitable transformation of retail stores; yet the reasons to adopt such technologies by business owners may be little known. Based on a TOE and TAM inspired framework, this study analyses the drivers of such decision by small and medium size enterprises using a survey methodology. The results show that the attitude towards technology is the strongest predictor of the intention to adopt CFIST, highlighting the role of the top management in technology decisions. This conclusion has important implications for practitioners. This research is the first to address the adoption of CFIST by SMEs and therefore set the path for further studies about the impact and adoption of in-store technology in SMEs.     

Futures and futures options with basis risk: theoretical and empirical perspectives

Under a no-arbitrage assumption, the futures price converges to the spot price at the maturity of the futures contract, where the basis equals zero. Assuming that the basis process follows a modified Brownian bridge process with a zero basis at maturity, we derive the closed-form solutions of futures and futures options with the basis risk under the stochastic interest rate. We make a comparison of the Black model under a stochastic interest rate and our model in an empirical test using the daily data of S&P 500 futures call options. The overall mean errors in terms of index points and percentage are ?4.771 and ?27.83%, respectively, for the Black model and 0.757 and 1.30%, respectively, for our model. This evidence supports the occurrence of basis risk in S&P 500 futures call options.     

移动游戏使用意愿问题的研究综述

在分析整理国内外移动游戏使用意愿问题相关文献的基础上,对相关研究所采用的理论模型、移动游戏使用意愿的主要影响因素、数据收集和分析处理的方法进行了总结和归纳,并为今后移动游戏使用意愿问题的研究提供了探索方向。     

基于TAM的信息检索可视化模型

本文从技术接受模型（TAM）的角度出发,构建了信息检索可视化基本模型,并简单分析其影响因素。     

Mortality Among the Elderly in Sweden 1988–1997

By replacing the exponential growth in a Makeham function with a straight line at very high ages, graduated mortality rates gives an acceptable adherence to observed data.     

浅谈滨海大道改性沥青SMA路面工程的质量控制

章介绍了滨海大道工程中采用的改性沥青及SMA路面技术，并重点从材料、配合比设计、拌和及施工温度控制、摊铺及碾压等方面介绍了如何进行改性沥青SMA路面工程的质量控制。     

Web-based GIS in tourism information search: Perceptions,tasks, and trip attributes

People’s strategies and choices to utilize tourism information have shifted dramatically over the years following ubiquitous access to the Internet. Despite the fact that many tourism information searches on the Internet involve geo-spatial information through WebGIS, little is known about tourists’ behavioral patterns with this media. The purpose of this study was to examine tourists’ trip situations, tasks, and perceptions toward WebGIS. An electronic survey method and multiple regression technique were used to collect and analyze data. Findings indicate that ‘usefulness’ and ‘playfulness’ were the key factors that determined the level of usage and interaction. Users showed distinct behavioral tendencies under different trip situations and task performances when searching tourism information using WebGIS.     

Auditor reporting and earnings management: some additional evidence

This paper investigates the reasons that lead to modification of auditors’ opinions. We revisit the conclusions of prior US‐based research on whether a modification highlights likely earnings management activities. Extending this research, we consider an alternate explanation that managers adjust accruals to report earnings that better predict future firm performance, which has the side‐effect of placing them in conflict with their auditors. Our study sample comprises all firms listed on the Australian Stock Exchange over the period 1999–2003. Consistent with prior research, there is no evidence of earnings management leading to an audit opinion modification. However, we do show that firms receiving inherent uncertainty modifications (other than going concern) have greater persistence of earnings (accruals) relative to other firms. This is consistent with the proposition that managers have made policy choices in reporting current earnings, with which their auditors disagree, that will likely result in a greater ability to forecast the firm's future earnings.