Science-practice interactions linked to climate adaptation in two contexts: municipal planning and forestry in Sweden

This paper examines the science-practice interface in the process of adapting to climate change in society. This paper analyses science-based stakeholder dialogues with climate scientists, municipal officers and private individual forest owners in Sweden, and examines how local experts both share scientific knowledge and experience and integrate it into their work strategies and practices. The results demonstrate how local experts jointly conceptualise climate adaptation, how scientific knowledge is domesticated among local experts in dialogue with scientific experts, the emergence of anchoring devices, and the boundary-spanning functions that are at work in the respective sectors.     

浅谈如何做好工业企业厂界噪声监测质量保证工作

针对如何做好工业企业厂界噪声监测质量保证工作问题,文中介绍了如何做好监测前的质量保证工作,包括监测人员的保证作用、监测方法的保证作用、噪声监测仪的保证作用、噪声校准仪的保证作用,探讨了对现场监测质量测定的影响因素,主要包括对气象要求、测量工况、监测情况调查、测点位置、测量时间、背景噪声值扣除、人为噪声的排除和测量记录对监测质量的影响,并对监测数据进行了处理及分析,这有益于做好工业企业厂界噪声监测质量保证工作。     

北京市跨区县界断面水质考核研究与应用

研究构建了北京市跨区县界断面水质考核办法,包括水质监测、考核评价、考核程序等主要内容。考核办法目前已纳入北京市区县政府绩效管理考评,作为北京市水环境目标责任考核的重要组成部分。     

南盘江云南省出境断面20年水质监测结果及回顾评价

积累了南盘江云南省出境断面23年的水质监测数据,分析评价了多年来南盘江水质的优劣状态及其主要污染物,回顾评价总结了南盘江水质历年变化情况。     

城市边界土地增值收益之经济学分析——兼论土地征收中的农民利益保护

经济发展使得城市增长具有必然性。而城市增长又会带来城市内外特定区位土地价格的增加。城市边界区土地价格具有自身的特点。从动态的城市地价模型分析来看．其增值不仅来自于外部性作用，还得益于城市的扩张。城市的扩张有两种方式：一是由于城市化和收入的增加导致城市地租曲线整体向外平移；二是即使人口保持不变，但由于交通的改善使得城市地租曲线逆时针旋转。不能以农业地价来定量边界区土地价格。因为该区土地增值不仅仅来自于外部性，农民具有参与增值分割的权利。应该重新建立土地征收补偿的价格体系．保护农民的合法权利。     

成都冬季典型辐射逆温过程分析

本文利用测温声雷达的探测结果，借助同期探空和地面观测资料，分析了成都平原典型辐射逆温的生消演变规律，指出了其主要特征。这些结果对气候资源利用、污染气象条件的研究等具有重要意义。     

MODELING GROUND WATER FLOW USING FLUX BOUNDARY CONDITIONS1

ABSTRACT: Determination of the boundary conditions for modeling ground water flow is a critical point especially in regional models. Normally the regional models require model areas that are greater than the given area of interest. This work focuses on the prediction of hydraulic heads in regional models using flux boundary conditions. The model uses flux boundary conditions that were estimated using a radial flow analog and Darcy's law. The regional model that is presented uses no parameter identification (inverse estimation) procedures. In the present work, the Houston area was used. The simulation of the hydrological conditions of the Chicot and Evangeline Aquifers that underlie the Houston area were made using the available information about the geological profile in the Houston region and the current information about the existing production wells. The regional model works as a forward problem. The system parameters such as hydraulic conductivity, specific storage, and hydrological stresses were specified, and the model predicts the hydraulic head. Actual data from piezometers operated by the U.S. Geological Survey (USGS) in many places throughout Houston were used as initial conditions. Some piezometric head data were generated using the regional variable theory called kriging to supply head estimates in areas where data were unavailable. The Modular Three Dimensional Finite Difference Groundwater Flow Model developed by the USGS was used to predict the hydraulic heads. The predicted ground water heads are compared to the actual data. The results show that the model performs well for locations where data were available.     

危岩块体稳定性分析的蒙特卡罗边界法

在危岩块体的稳定性的可靠度分析中,本文采用了一种新的可靠度分析方法──蒙特卡罗边界法．并将此方法应用于清红电站V#号危岩块体的计算和稳定性评价,其结果与实际监测成果基本吻合．     

白炭黑生产中干燥系统的噪声控制

对ＲＨＯＮＥ－ＰＯＵＬＥＮＣ白炭黑公司的干燥系统进行了噪声综合治理。主要措施有：大型引风机隔声罩、引风机排气筒消声塔,加热炉和鼓风机隔声机房,雾化加速器活动隔声罩,管道隔声包扎等。治理后厂界噪声由７４ｄＢ（Ａ）降至４５ｄＢ（Ａ）。     

ADVANCES IN THE BOUNDARY INTEGRAL EQUATION METHOD IN SUBSURFACE FLOW1

ABSTRACT: This paper explores some of the advances of the boundary element method, as applied to ground-water problems, during the last five years. Although the method is still somewhat limited compared to solution by finite elements, the range of solutions has increased considerably. Diffusion and advection-diffusion solutions are done efficiently. These include the incorporation of inhomogeneity, anisotropy, and nonlinear diffusion. The difficult problem of stream-aquifer interaction is an important application as it is much easier to follow a free surface with its multiple configurations. The application must be able to cycle between ground-water connection and disconnection with the stream and include seepage surfaces. Flow in fractured media is a natural application where the flow in fractures can usually be treated without a computational exception in spite of extremely high aspect ratios. The case of seawater intrusion forms a type of free surface problem and thus is a case for which the method has special advantages. For these and other applications the boundary element method provides an inexpensive technique for calculation where the data preparation and setup time is minimal. In most of these cases, programs can and have been written on microcomputers.