基于UTAUT模型的消费者移动互联网业务使用意愿影响研究CSSCI

移动互联网业务已成为企业与消费者深度沟通的重要渠道。为了探究影响消费者移动互联网业务使用意愿的因素,在整合型信息技术接受和使用模型的基础上添加了感知风险、感知成本、激励和感知娱乐四个因素,构建了影响消费者移动互联网业务使用意愿的概念模型,利用实证方法对模型进行了检验。研究结果显示,便利条件和使用意愿对移动互联网业务使用行为具有正向影响,期望效用、努力效用、社会影响和感知娱乐对使用意愿有积极影响,感知风险、感知成本对使用意愿有消极影响,激励对使用意愿的影响不明显。     

论装备综合保障中的使用保障和维修保障——以某地面通信方舱系统为例

介绍装备综合保障中的使用保障和维修保障,并以某型通信方舱系统为例,介绍了构建装备使用保障参数体系和维修保障参数体系的思路和方法,最后对使用保障/维修保障和正常/非正常操作使用之间的关系进行了思考,为装备的保障工作提供了一些实际的借鉴。     

萨北区块井下作业清洁生产技术的应用

分析了萨北区块井下作业产生污染物的类型和特点,介绍了油井作业应用SVO型油水回收装置、水井作业使用SVW型污水回收装置、起下油管使用油管自封器、起下抽油杆使用抽油杆自封器、井口操作使用井口溢流收集装置、工具清洗使用油水收集装置等井下作业清洁生产技术的应用情况。通过以上技术措施的应用,累计回收原油约400 m3,同时减排了污水、削减了固体废物。     

浅谈混凝剂在气田水处理中的应用

在重庆气矿气田水处理中加入了聚合氯化铝和聚丙烯酰胺,其应结果表明,这两种絮凝剂配合使用的效果较好,能达到石油企业废水回注指标(pH值为6～9,SS小于30mg/L,石油类物质少于10mg/L)。分析了两者单独使用的处理结果,针对目前使用中存在的问题,指出应注意的事项,并对今后重庆气矿气田水处理运行中混凝剂的使用提出了建议。     

中国排污权交易实践存在的问题及其解决路径

目前,排污权有偿使用和交易作为各地环保工作体制、机制创新的热点,是利用经济手段促进环境保护的有益尝试。本文介绍了我国试点地区开展排污权有偿使用和交易所做的主要工作及其特点,并就面临的问题进行了重点分析,提出了进一步完善的对策措施,为全国范围内开展排污权有偿使用和交易积累了工作经验。     

基于GIS的生态环境影响评价建模方法初探

分析了生态环境影响评价指标体系的建立方法,并在此基础上,探讨了以Arc/Info为平台,使用矢量数据建立生态环境影响评价模型的方法,并与使用栅格数据的评价模型进行了对比分析,得出使用矢量数据的评价模型具有运算结果精确度高、修改方便、效率高、操作过程简单等优点.     

袋进袋出过滤器的特点与使用

介绍了袋进袋出过滤器的使用范围,基本组成以及特点,对比了袋进袋出过滤器与现有过滤设备在使用方面的优势。     

利国益民的“绿色教育”

2007年12月25日,随着《教育部、财政部关于全面实施农村义务教育教科书免费提供和做好部分教科书循环使用工作的意见》的颁发,全国各地也相继出台了关于教科书循环使用的规定,有力地推动了教科书循环使用工作的开展。教科书循环使用的真正意义不仅在于节省书费,更重要的是体现在育人,特别是在倡导建设资源节约型社会和环境友好型社会的今天,让学生在循环使用中,接受“爱”的传递,提高学生的环保意识和资源忧患意识,增强学生的集体主义观念和关爱他人的团队精神。     

践行循环教材之困——从千份调查问卷看中小学循环教材的使用

正到2013年秋季开学,安徽省合肥市中小学实行循环教材政策正好满一年,学校和家庭各方面对循环教材的使用反响如何?使用循环教材的可行性如何?循环教材涉及的教材科目有没有再扩大的可能?为了了解师生和家长使用循环教材后的心声,我们设计了两份问卷,并选取了合肥     

无公害茶叶农药化肥的合理使用和污染防治

近年来,安溪县为了控制茶园病虫害和提高茶叶产量,使用了大量农药和化肥,严重影响了茶叶品质,对土壤、水体也造成较大污染。本文着重介绍在了无公害茶叶生产中采用天敌资源进行生物防治、使用生物源微生物农药和科学合理用药、加强生态茶园建设以及推广使用有机复合肥料等措施,从而改善茶叶品质,减轻对环境的污染。     

资源循环复杂物质流系统的Petri网建模方法研究

物质流分析是研究循环经济的重要方法,本文面向资源循环的流程制造企业,对不同复杂度的物质流系统进行了建模方法研究。首先对国内外在物质流领域的建模理论研究进行了综述,然后对物质流的特点和循环物质流的建模方法进行了分析,对基于投入产出表格的物质流分析方法、理论层面基于图论的物质流分析方法以及物质流分析软件进行了综述,最后重点探讨了Petri网建模与仿真工具在循环物质流分析中的建模方法,研究了不同类型Petri网在解决不同复杂度的物质流系统问题中的适用性,为物质流建模与仿真提供理论支撑。     

粉煤灰综合利用的研究进展

从粉煤灰的来源入手,介绍了粉煤灰的化学组成和物质组成,对粉煤灰在污水处理、建材领域和材料学领域等方面的应用机理及国内的应用现状进行了概述,并对粉煤灰的应用进行了展望,用粉煤灰制作的绿色建材和建筑工程,粉煤灰填充材料发展的聚合物复合材料等方面必会有光明的前景.     

新疆建筑材料用原料及其建材产品的辐射水平

报道了分布在新疆雏吾尔自治区15个地州市100多个厂矿的建筑材料用原料及其建材产品的放射性检测结果。多数建材用原料及产品的放射性水平低于国家规定的限制(控制)标准，对公众是安全的；少数地区部分建材的放射性高于限制标准，不能用作建材。必须健全对建材的放射性检测和管理制度。     

利用粉煤灰制作新型建筑材料

粉煤灰不仅占用大量耕地,而且严重污染环境。针对东营地区粉煤灰的产生现状,积极开发粉煤灰的废物利用。通过对粉煤灰生产空心砌块的原料配比和生产工艺实施的调查,结果表明,利用粉煤灰生产新型建筑材料是减少占地和建材工业征地的有效途径,能变废为宝、化害为利,达到保护环境的目的。     

Material efficiency: A white paper

For most materials used to provide buildings, infrastructure, equipment and products, global stocks are still sufficient to meet anticipated demand, but the environmental impacts of materials production and processing, particularly those related to energy, are rapidly becoming critical. These impacts can be ameliorated to some extent by the ongoing pursuit of efficiencies within existing processes, but demand is anticipated to double in the next 40 years, and this will lead to an unacceptable increase in overall impacts unless the total requirement for material production and processing is reduced. This is the goal of material efficiency, and this paper aims to stimulate interest in the area. Four major strategies for reducing material demand through material efficiency are discussed: longer-lasting products; modularisation and remanufacturing; component re-use; designing products with less material. In industrialised nations, these strategies have had little attention, because of economic, regulatory and social barriers, which are each examined. However, evidence from waste management and the pursuit of energy efficiency suggests that these barriers might be overcome, and an outline of potential mechanisms for change is given. In bringing together insights into material efficiency from a wide range of disciplines, the paper presents a set of 20 open questions for future work.     

Optimal production scale of open pit mining operations with uncertain metal supply and long-term stockpiles

An open pit mining operation consists of various stages, and the calculation of the production capacities of these stages depends upon the available supply of ore (mineralized material of economic value) and waste material. Cutoff grade is the criterion that specifies the amount of ore and waste. The material with grade equal to or higher than the cutoff grade is classified as ore. The material with grade less than the cutoff grade is considered waste. While this explains the link between cutoff grade theory and the calculation of production capacities, the majority of optimization models for finding production capacities not only disregards this relationship but also ignores expected variations and uncertainty in metal content or the available supply of ore and waste material.     

System dynamics model for analyzing effects of eco-design policy on packaging waste management system

EU's long-term objective is to become a recycling and resource effective society, where waste is utilized as a resource and waste generation is prevented. A system dynamics model was developed to analyze the policy mechanisms that promote packaging material efficiency in products through increased recycling rates. The model includes economic incentives such as packaging and landfill taxes combined with market mechanisms, behavioral aspects and ecological considerations in terms of material efficiency (the packaging material per product unit, recycled fraction in products). The paper presents the results of application of various policy instruments for increasing packaging material efficiency and recovery rate and reducing landfilled fraction. The results show that a packaging tax is an effective policy instrument for increasing the material efficiency. It ensures the decrease of the total consumption of materials and subsequent waste generation. The tax helps to counteract a rebound effect, which, as identified by the analysis, can be caused by reduced material costs due to eco-design. The model is applied to the case of Latvia. Yet, the elements and structure of the model developed are similar to waste management systems in many countries. By changing numeric values of certain parameters, the model can be applied to analyze policy mechanisms in other countries.     

Assessment of physical economy through economy-wide material flow analysis in developing Uzbekistan

In this paper, we assess the physical dimensions of Uzbekistan's economy during 1992–2011 by using the economy-wide material flow analysis (EW-MFA) method, which is an internationally recognized tool for such assessments. There have been a number of studies using methodological standardization of EW-MFA, but to the best of our knowledge, it has never been used to assess the metabolism of Central Asian economies, especially, in this case, the Republic of Uzbekistan.Our analysis strives to empirically evaluate macroscopic economic activities by considering the accounting of material flows. The material flows data-set comprises of consistent data for domestic extraction, imports, and exports, as well as other derived MFA-based indicators.The derived indicators are internationally compared for further evaluation of national economic development performance in a given period. The indicators of direct material input (DMI) and total material requirements (TMR) showed a slight increase in 1992–2011 with an average annual increase of 2.79% and 2.34%. The trends of TMR, DMI, domestic material consumption (DMC) and material efficiency, which is indicated by GDP/DMI, displayed lower values than other industrialized countries referenced in the international comparison. Although national economic performance data showed particularly remarkable success, indicators measuring material inputs and DMC reveal an insignificant increase during the period of study. During the second decade of study period, relative decoupling has occurred which indicated that the economic indicator (GDP) grows faster than DMC and other macro indicators grow.     

覆膜滤料过滤性能的试验研究

对覆膜滤料与普通（渗膜）滤料的过滤性能进行了试验研究,结果显示：与普通滤料相比,覆膜滤料具有过滤效率高、运行阻力低、使用寿命长等特点。覆膜滤料的过滤性能更佳,更能满足烟尘过滤的要求。     

An introduction to reverse logistics for environmental management: A new system to support sustainability and profitability

The private-sector marketplace has identified the reengineering of the structure and management of the supply chain as a great untapped business opportunity. In traditional supply chains poorly structured operational and financial decision making institutionalized the poor management of material resources. This nonoptimized management process results in the generation of impaired material resources, which leads to solid and hazardous waste, as well as additional operating costs throughout the supply chain. The way in which the marketplace is addressing the issue of impaired material resources is by transferring the ownership and liability of impaired resources from the customer back to the supplier. The marketplace is also implicitly saying that the supplier must redesign its products to eliminate/minimize waste, or if the supplier fails to accomplish this goal, the supplier will be forced to absorb the costs associated with managing impaired material resources. The ramifications of this change are truly of historical proportions. The utility of a material resource to create wealth has throughout the centuries almost always required its ownership. Ownership has also denoted that the owner accept any liabilities created by the material resource. This is now all about to change. To support this change, a vastly expanded infrastructure and new management systems will have to be developed. This article shows how to manage the supply chain and impaired material resources. The new system that will operationally and financially manage these changes as well as create new organizational decision-making drivers is Reverse Logistics Management (RLM).