城市通风廊道规划与控制方法研究 以《广州市白云新城北部延伸区控制性详细规划》为例

为了改善城市通风环境,文章以空气流动理论机理、夏季城市的主要风源、影响城市通风的主要规划因素为理论基础,研究提出城市通风廊道的规划方法,包括宽度、走向、开敞空间、相邻界面、建筑5个方面的规划控制指标。并以《广州市白云新城北部延伸区控制性详细规划》为例,分析介绍了该案例中7条通风廊道的规划构建及其控制方法与指标要求。

Tunnel Engineering Construction Schedule Analysis and Management Based on Visual Simulation

The methodology of visual simulation for a tunnel engineering construction schedule is presented. Visualization of simulation model, calculation and result of construction schedule simulation is realized, and the construction simulation and the resource optimization of tunnel engineering are made. A risk analysis and a decision-making method of tunnel engineering construction schedule based on visual simulation are presented. Furthermore, using S curve theory and schedule management method, the real-time management and control method of tunnel engineering construction based on visual simulation is presented. The application to the tunnel engineering construction schedule analysis and management shows the feasibility and effectiveness of the method presented in this paper.

Research on the Probability of Earthquake Occurrence in the Daduhe Drainage Area

This paper applies the Seismic Hazard Analysis method for the cities of China to research on the probability of earthquake occurrence in the Daduhe drainage area,where the cascade dam system is located.This research is based on the potential seismic source scheme of the Seismic Ground Motion Parameter Zonation Map of China(2001),and uses Poisson distribution as an earthquake occurrence model.Earthquake magnitude obeys truncated exponential distribution.The spatial distribution function of the potential seismic source zone is taken as the first-class spatial probability distribution,and the homogeneous probability distribution in the potential seismic source zone as the second-class spatial probability distribution.Considering the seismic intensity attenuation relationship of western China,we compute the occurrence probability of an earthquake around magnitude 6.0(5.5～6.5),7.0(6.5～7.5)and over 7.5 in the Daduhe drainage area,where 22 series cascade dams will be built.The results can be used for hydropower plant planning,hydropower dam site selection and seismic fortification.

Reliability Optimization in the Islanded Mode of Microgrid

A microgrid is a combination of distributed energy resources and controllable loads. The main objective of this research is to optimize energy flow within a microgrid with regards to reliability in grid connected mode. A microgrid with combined heat and power, natural gas generator, diesel generator, solar energy, wind energy, and battery energy storage along with a critical load is considered in this research. An event oriented analytical method called FTA （fault trees analysis） is implemented for reliability optimization using PTC Windchill Solutions software in a microgrid. The reliability of each component in each energy source of the microgrid is calculated using FTA. The reliability of the critical load is evaluated. The quantitative and qualitative results of FTA are evaluated in order to interpret the results of fault tree. The sensitivity and uncertainty of the fault tree results for critical load is deduced by calculating the importance measures such as risk achievement worth, risk reduction worth, criticality importance and Fussel-Vesely importance. Finally from the results the components that are sensitive and at high risk are deduced.

Integrative Planning and Processes in the Mountain Areas of Mae Hong Son, Thailand

This paper outlines innovative integrative approaches for poverty alleviation based on integrating planning and processes; crossing disciplines and sectors; combining community perception with spatial technology; and creating alliances between community and government agencies. Several tools of development models from Participatory Rural Appraisal （PRA） and 3D Mapping Model programs were applied in the planning model to demonstrate a diversity of integrated development and conservation activities, The planning model was launched with a PRA process evolved a simple community map. The map allowed for the community＇s constraints and potential and related issues to be identified and analyzed by different groups. This initiative was followed by a 3D Mapping Model program, which involved the building of a topographic map. Community＇s resources and landmarks and other meaningful landmarks and data were added. These processes allowed an opportunity for creating a historical timeline, assessing the present and mapping the future of community resources. The planning model serves as a meeting point to support and enhance decentralized governance by providing centrality to the needs and decisions of local communities to improve their quality of life. This has been seen through the adoption of natural resources conservation campaigns by local communities, which include the participation of women, displaced people, ~rassroots organizations, and ~overnment a^encies.

Fraud in Businesses and Internal Control System

This study, based on the literature, stresses the effectiveness of internal control systems for the prevention, to a reasonable extent, of fraudulent practices that cause resource loss in business. In this context, the key concepts related to fraud and internal control systems are presented first. After the introduction, the relation between fraud and internal control systems is elaborated, and the method for establishing an effective internal control system which is needed to detect and prevent fraud is explained. As for the conclusion, the study connects the effectiveness of the internal control system with the effectiveness of the elements which compose the system, and provides some suggestions for increasing the efficacy of the elements which compose the system, such as control environment, risk analysis, information-communication, control activities, and monitoring.

Risk Analysis in Renewable Energy： Assessment of the Vulnerability of the Environment and Community

As a result of recent accidents, society is becoming more conscious and concerned about the risk that are under to the environment and communities. A proposal of assessment of the vulnerability of the environment and community is presented here under a holistic perspective using fuzzy logic as a formal tool. An internal factor of the risk of a system under a given threat is assessed. Risk is considered as the union between the threat and the vulnerability of the environment and community. This approach shows that the reduction in either or both of them makes a reduction in the risk content as well. The main purpose of this proposal is not to obtain a single value as output; in fact the result is a map which can contribute to the different areas of the community in decision making.

Economic-Technical Feasibility Study of the ＂Sierra de Tineo＂ Wind Farm Expansion. Tineo-Principality of Asturias （Spain）

The aim of this work is double. Firstly, we want to stress out that investing in renewable energies in 2009 in Spain was a profitable activity. This question will be answered studying the possibilities of expanding ＂Sierra de Tineo＂ wind farm in the Principality of Asturias （location, wind resource, data analysis, simulation, legal standards and economic and sensitivity study of the investment）, and for that, data from the year 2009 have been used. And secondly, the goal is to set the bases for a future paper where the current situation of Spain （within the renewable framework）, will be compared with the 2009 scenario.

Simulation Analysis for Massive Deployment of Variable Renewables Employing an Optimal Power Generation Mix Model

This paper develops a high time-resolution optimal power generation mix model in its time resolution of 10 minutes on 365 days by linear programming technique. The model allows us to analyse the massive deployment of photovoltaic system and wind power generation in power system explicitly considering those short-term output variation. PV （photovoltaic） and wind output are estimated, employing meteorological database. Simulation results reveal that variable fluctuation derived from a high penetration level of those renewables is controlled by quick load following operation of natural gas combined cycle power plant, pumped-storage hydro power, stationary NAS （sodium and sulfur） battery and the output suppression control of PV and wind. It additionally turns out that the operational configuration of those technologies for the renewable variability differs significantly depending on those renewable output variations in each season and solving the seasonal electricity imbalance as well as the daily imbalance is important if variable renewables are massively deployed.