Ozone Cooling Tower Treatment With and Without Mineral Removal

This paper builds on a prior paper by this author, McGrane (1991). In that paper, ozone is used as the sole means of cooling tower water treatment. The paper discusses water conservation by increased cycles of concentration, greatly increased efficiency through extremely low biological populations, and corrosion data which is compared to ozonated and chemically treated towers.

New in this paper are the results from the combination of a low pressure reverse osmosis system with ozone treatment for cooling tower water. Scale formation has continued to plague cooling towers with high concentrations of calcium in the make-up water. The use of a mineral removal system in cases of extremely hard water has made ozone an attractive alternative to traditional chemicals in many areas.     

ASCE Journal of Management in Engineering: Review of the years 1985–2002

This study considers the content of the papers published by ASCE’s Journal of Management in Engineering, which has witnessed a growth in number of papers and breadth of participation, particularly of international origin, during the 1985–2002 period. The content is analyzed in two main dimensions: the type of subject and its composing topics, and the type of contributors to the journal. The analysis shows the evolution of the engineering management discipline as represented in the journal. Over the years the discipline has been enriched by an increasing number of contributions on corporate strategies and programs, organizational change, and cultures issues, as well as a growing interest in project management topics, such as quality planning and evaluation of alternative project delivery systems. The number of papers by practitioners, initially the largest contributing group to the journal, has declined significantly over the years.     

一类新型功能材料化合物--瓜环的合成与分离研究进展

概述了新型功能材料化合物——瓜环的合成及分离的一般方法和新方法，并对瓜环的性质及应用进行了初步探讨。     

AMPS及其共聚物的研究进展

介绍了国内２－丙烯酰胺其－２－甲基丙磺酸及其共聚物的研究情况,认为水溶性ＡＭＰＳ共聚物是一种具有广泛开发应用前景的精细化学品。     

A Quality Software Process for Rapid Application Development

Software organizations can significantly improve the quality of their output if they have a defined and documented software process, together with the appropriate techniques and tools to measure its effectiveness. Without a defined process it is impossible to measure success or focus on how development capability can be enhanced. To date, a number of software process improvement frameworks have been developed and implemented. However, most of these models have been targeted at large-scale producers. Furthermore, they have applied to companies who use traditional development techniques. Smaller companies and those operating in development areas where speed of delivery is paramount have not, as yet, had process improvement paradigms available for adoption.This study examined the software process in a small company and emerged with the recommendation of the use of the Dynamic Systems Development Method (DSDM) and the Personal Software Process (PSP) for achieving software process improvement.     

基于工作流技术的学生评语生成系统的设计与实现

工作流就是业务过程的部分或整体在计算机应用环境下的自动化,它主要解决的是使在多个参与者之间按照某种预定义的规则传递文档、信息或任务的过程自动进行,从而实现某个预期的业务目标。对工作流技术的定义、研究现状做分析,对系统主要功能模块的设计进行详细阐述。     

Characterisation of vascularisation of scaffolds for tissue engineering

Abstract

Vascularisation of scaffolds is now recognised as a crucial requirement for the success of tissue engineering strategies. This review summarises the state-of-the-art in the techniques available for the in vivo assessment of vascularisation of scaffolds with focus on growth factor delivering scaffolds, microfabrication technologies and in vivo characterisation methods based on the arteriovenous loop model to create three dimensionally vascularised tissue replacements.     

Public-private partnerships in the water sector: A review

Public-private partnerships (PPPs) offer possible solutions for governments seeking to achieve better value for money and fund the investments needed to provide infrastructure and manage public services. Water-sector projects demand extensive, up-front and sunk investments, and inefficiency levels are often significant. This study conducted a systematic review of previous research on water sector PPP projects. The research design is innovative in that it relied on a hybrid methodology combining systematic quantitative, semantic network and narrative analyses. The literature review protocol applied found 122 relevant studies published in top journals. Five key topics within water-related PPP studies were identified: risk management, PPP contractual arrangements, financing and tariffs, infrastructure, and governance. The most important topic is risk management, within which individual scholars’ contributions were tracked. However, a consensus has not been reached about the best risk matrix for improving PPP contracts in the water sector.     

岭南传统园林研究进展与展望

对近代岭南传统园林的专门研究始于20世纪50年代夏昌世和莫伯治开展的岭南庭院调查工作。在梳理和归纳文献的基础上,以时间为轴线分析现当代学者对岭南传统园林的研究成果,通过对各时期研究成果的重点和创新点进行回顾和总结,分析岭南传统园林工作的不足以及对未来研究的展望。