Technical assessment and public perception of environmental issues: the case of the Municipality of Pisa

The different approach of specialists and general public to environmental topics has often led to contrasting positions. After decades of strong debate, however, there seems to be a growing agreement on the need for overcoming a mere contraposition in favour of an integration of opinions. This paper aims to contribute to the topic by shifting the setting into the urban environment, through the case of Pisa Municipality, Italy. It compares the scenarios described by the latest State of the Environment Report – expression of the technical evaluation – with the perception of citizens measured by a direct survey. Results were first used to investigate any disagreements about quality of environmental matrices, entity of pressures exerted on them and characteristics of determinants. They were then used to identify the range where the integration of the two positions might be pursued and finally collect, in view of future policies, indications on locally adoptable key factors and strategies.     

生产率和科技创新能力可持续提高实质:人力资源开发

本文将分析中国的人力资源条件对劳动生产率和科技创新能力的制约以及在国际性的人才争夺中所处的被动地位 ,提出发展教育和科技、更新观念和体制 ,是提升综合国力、实现可持续发展的重要途径。     

砂状氧化铝技改项目安全管理特性及措施

砂状氧化铝项目是中国铝业公司改善氧化铝产品质量、提高市场竞争力的重大技术改造项目，在山西分公司有3个砂状氧化铝技术改造项目同时施工，与生产交叉进行，时间紧、任务重、技术含量高、点多面广，安全管理难度很大，但通过采取有效措施，就能够保证砂状氧化铝技改项目安全稳定、顺利地进行。     

Global Warming, Uncertainty and Endogenous Technical Change

What impact does ecological uncertainty have on agents' decisions concerning domestic emissions abatement, physical investments, and R&;D expenditures? How sensitive are the answers to these questions when we move from exogenous to endogenous technical change? To investigate these issues we modify the ETC-RICE model described in Buonanno et al. (2001) by embedding in it a hazard rate function as in Bosello and Moretto (1999). With this model at hand we run numerical optimisations focusing our attention on the control variables of the representative agents, i.e., domestic abatement rate, investments in physical capital, and R&;D spending, as well as on the endogenous patterns of GDP level and CO₂ emissions. Our results show that uncertainty strongly influences agents behaviour; in particular, agents slow down their emissions in order to maintain a more sustainable growth path. In addition, R&;D expenditures trigger the “engine of growth” exclusively when environmental technical change is formalized in an endogenous fashion. However, even if environmental uncertainty may stimulate technical change, long-run growth it turns out to be negatively affected by the former, as also predicted by Clarke and Reed (1994) Tsur and Zemel (1996) and Bosello and Moretto (1999).     

北部污水处理厂污泥消化系统大修技术措施探讨

消化系统是污水处理厂污泥处理中的核心工艺环节,其运行效率及运行安全性直接影响污泥处理效果。结合北部污水处理厂消化池的运行管理及大修工作,总结经验,为消化系统稳定运行提供借鉴。     

一级强化处理技术改造生活污水处理站工程介绍

针对污水水质特点,对企业生活污水处理站进行改、扩建工程。将原二级生物处理工艺改为一级强化处理工艺;一沉池改为强化沉淀池;接触氧化池改为调节池。采用新工艺后经试运用出水可达标排放。     

我国发展循环经济的最新进展

从循环经济的发展逐步纳入规划、立法取得的进展、政策体系的逐步完善以及理论研究和技术支撑作用的逐步增强四个方面,论述了我国发展循环经济的最新进展,并指出在我国已初步形成了再生资源循环利用产业体系、产业园区循环经济发展模式、全社会资源循环利用体系以及发展循环经济的一批典型企业。     

生命周期评价新发展与工业应用

从国际生命周期小组的统计和国内外的案例,综述了新世纪生命周期评价（LCA）的发展和工业应用现状,对存在的问题进行探讨,就如何进一步改进提出建议。     

中国战略环境评价（SEA）研究进展及发展趋势

自1990年战略环境评价引入中国以来,SEA在中国已经有了很大发展。中国政府已于2002年颁布了《中华人民共和国环境影响评价法》（以下称“环评法”）,该法中明确规定了对各级政府制定的规划需要进行SEA。通过运用资料调查和文献分析等方法,针对环评法实施后中国SEA实践和学术研究成果进行分析,并探讨中国SEA主要层次一规划环境影响评价的研究现状,总结发展特点;结合中国国情提出中国SEA发展趋势。     

依靠科技进步节能减排,提高钢铁行业发展的内力

节能减排是我国经济发展中必须解决的问题,特别是高耗能产业更应首当其冲。我国钢铁行业节能减排任务很重,但依靠科学技术的进步,提高了企业发展的内力,取得了一定的成绩。但是,钢铁业总能耗依然占到全国总能耗的14%以上,今后面临的节能减排任务仍很艰巨。