龙丽高速公路(K92+945-K93+105)石方路基控爆施工

文章详细介绍了浙江龙丽高速公路K92+945-K93+105段高陡石方路堑在保证其下方的省道通行安全及交通畅通的情况下所采取的安全防护、控制爆破及施工组织措施。     

Good News and Bad News: Search from Unknown Wage Offer Distributions

The largest market in national economies is the labor market. Labor market contracting is characterized by job search, often from unknown wage offer distributions. This paper reports experimental tests of finite horizon models of job search in which the wage offer distribution is unknown. Theoretically-optimal search from an unknown wage offer distribution can have the seemingly paradoxical property that some offers will be accepted that are lower than other offers that will be rejected in the same period of the search horizon. Thus the reservation wage property (or lowest acceptable wage path) may not exist. This can occur because an offer that is a priori relatively high (good news) can imply that it is highly probable that search is from a favorable distribution, and such an offer can look unattractive when it is an a posteriori relatively low offer from a favorable distribution (bad news). This paper reports results from experimental treatments for search from unknown distributions in which the reservation wage property does exist and treatments in which it does not exist. We find that the consistency of search behavior with search theory reported in earlier papers is robust to the presence or absence of the reservation wage property and to whether the draws come from known or unknown distributions.     

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.     

Self-determination and risk: the role of life goals and causality orientation in domain-specific risk propensity

A growing body of risk research shows that risk is content specific. Accordingly, various studies have highlighted some factors that could explain why people’s risk propensity may arise in certain domains of risk (e.g. the financial domain) but not in other domains (e.g. the recreational domain). Until now, no research has examined motivation as a possible correlate of domain-specific risk propensity. On the basis of self-determination theory (SDT), we examined the role of both extrinsic life goals (i.e. superficial goal striving, including fame, money, and physical attraction) and control-orientated personality style (i.e. feeling that one’s behaviors are governed by external contingencies) in the propensity to take risks in various domains (social, ethical, recreational, financial, and health/safety). A community sample of 197 participants completed measures scaled to assess extrinsic life goals, controlled orientation, and domain-specific propensity (DOSPERT). The results showed that pursuing extrinsic goals and being control oriented increased the propensity to take ethical, recreational, financial, and health/safety risks but decreased the propensity to take social risks. In addition, to corroborate that risk propensity is domain specific, these results indicate that superficial life aspiration and sensitivity to social pressures are highly predictive of instrumental risks (e.g. ethical and financial), moderately predictive of health risks, and negatively predictive of ego-threatening risks (e.g. social risk). The results are discussed in light of the domain-specific risk literature and in the perspective of interventions based on SDT.     

Understanding the factors affecting the adoption of the Internet of Things

The Internet of Things (IoTs) is widely considered as one of the most important infrastructures for promoting economic development and technological innovation. The purpose of this study is to find the key factors influencing IoT adoptions, specifically in Taiwan’s logistics industry. In this study adopts a model which is a hybrid of technology, organisation and environment (TOE) and the decision-making trial and evaluation laboratory method (DEMATEL) to evaluate the complex factors influencing the adoption of IoT. The study employs the TOE framework as a basis to develop a general evaluation framework, and the DEMATEL technique conceptualises a structural model and then identifies the causal relationships among factors through a cause-effect relationship diagram. Finally, we also divided the complex influencing factors into cause and effect groups to better clarify the causal relationships for decision-making, to ensure the efficiency of IoT adoption.     

简论司法舆情和司法独立的平衡--药家鑫案的制度反思

社会舆论对司法活动给予了充分关注。在监督司法活动的同时，社会舆论也对司法独立产生了严重的冲击。在借鉴美国谢泼德案件意义的基础上，着力探讨缓解社会舆论对审判活动造成冲击的途径和方法。     

数控机床技术消化吸收限制因子分析研究

目前在我国数控机床引进技术消化吸收方面存在不足,主要限制因子有资金限制因子、人员限制因子、实施限制因子等。这些限制因子可分为主观和客观两类。     

A true simulation study of three estimators at equal protection of respondents in randomized response sampling

In this study, three different estimators for estimating the proportion of a sensitive attribute in survey sampling are compared at equal protection of the respondents. The three estimators considered are due to Odumade and Singh (2009, Comm. Statist. Theory Methods) , Singh and Sedory (2011, Sociological Methods and Research) and a new estimator obtained by minimizing a chi‐squared distance. A SAS Macro is developed to compare these three estimators using a simulation study at equal protection of the respondents. A set of data from a real face‐to‐face interview was collected using two decks of cards and has been analyzed. The results are discussed.     

基于AD5545的可编程宽带直流信号放大器

设计了一种增益可手动数字设置或程控设置且无调节电位器的宽带直流放大器。该放大器主要以单片机MSP430和继电器组作为电路的主要控制部分,由使用D/A转换器AD5545控制的放大电路、前级信号调理电路、后级功率放大电路和滤波器组成,实现了增益连续可调的功能。该放大器在0～60dB范围内连续可调,输出信号无明显失真,在0～5MHz范围内信号可放大60dB,最大输出电压为8V。