为推进和谐型机车周期性计划预防修向数字化精准维修转变、防范重大事故及故障发生,基于大数据和云平台等技术,采用视情维修的开放体系结构(OSA-CBM,Open System Architecture of Condition-Based Maintenance),设计和谐型机车故障预测...为推进和谐型机车周期性计划预防修向数字化精准维修转变、防范重大事故及故障发生,基于大数据和云平台等技术,采用视情维修的开放体系结构(OSA-CBM,Open System Architecture of Condition-Based Maintenance),设计和谐型机车故障预测与健康管理(PHM,fault Prediction and Health Management)系统,包括系统的总体架构、技术架构和功能架构。旨在掌握机车及重要零部件性能演化规律、保证机车在途运行安全、实现精准维修、降低全寿命周期运用维修成本。展开更多
Despite the presence of bye-laws, solid waste management continues to be an issue in Mbarara municipality with households and businesses continuing to dump solid waste on open plots, low-lying areas, public spaces and...Despite the presence of bye-laws, solid waste management continues to be an issue in Mbarara municipality with households and businesses continuing to dump solid waste on open plots, low-lying areas, public spaces and rivers, or simply burning it in their backyards. This qualitative study aimed at establishing reasons as to why there was still improper solid waste management in Mbarara municipality and also establishing its constraints. Tools used included semi-structured questionnaires, observation and photographs. Two hundred and ninety-four participants （24 solid waste collectors, eight municipal council members and 262 community members） participated in the study. The study revealed both insufficient budget （87.5%） and insufficient equipment （50%） as the most common policy challenges in implementing proper solid waste management. Solid waste collectors not being comfortable with their salaries （79.2%）, limited sensitization regarding solid waste management （66%） and limited necessary tools （58.3%） as other challenges faced by solid waste management policy makers and implementers and finally, community members having limited awareness about laws governing solid waste management （61.1%）. In conclusion, insufficient budget, insufficient equipment, poor motivation and inadequate sensitization were found to be the major reasons as to why there was still improper solid waste management in Mbarara municipality, western Uganda.展开更多
Gross pollutants are the primary targeted pollutants in urban catchment management for urban water quality improvement as well as mitigation of flood. Apart from aesthetically unattractive because of its visibility, g...Gross pollutants are the primary targeted pollutants in urban catchment management for urban water quality improvement as well as mitigation of flood. Apart from aesthetically unattractive because of its visibility, gross pollutants also contributes to degradation of river water quality and loss of aquatic habitat as it carries harmful pollutants such as oxygen demanding material, hydrocarbons and heavy metals. This study analyzed trend of gross pollutant generated from two urban residential areas located in Selangor, Malaysia. The median value of gross pollutant load obtained fi＇om the Amanah Apartment and Bandar Botanic are 347.41 kg/ha/year and 32.46 kg/ha/year, respectively. Relationship between gross pollutant wet load with rainfall depths was derived using regression equation. A significant trend of increasing gross pollutant wet load into drainage system with increasing rainfall depth was observed. The behavior of pollutant load is related to the one observed in Australia.展开更多
文摘为推进和谐型机车周期性计划预防修向数字化精准维修转变、防范重大事故及故障发生,基于大数据和云平台等技术,采用视情维修的开放体系结构(OSA-CBM,Open System Architecture of Condition-Based Maintenance),设计和谐型机车故障预测与健康管理(PHM,fault Prediction and Health Management)系统,包括系统的总体架构、技术架构和功能架构。旨在掌握机车及重要零部件性能演化规律、保证机车在途运行安全、实现精准维修、降低全寿命周期运用维修成本。
文摘Despite the presence of bye-laws, solid waste management continues to be an issue in Mbarara municipality with households and businesses continuing to dump solid waste on open plots, low-lying areas, public spaces and rivers, or simply burning it in their backyards. This qualitative study aimed at establishing reasons as to why there was still improper solid waste management in Mbarara municipality and also establishing its constraints. Tools used included semi-structured questionnaires, observation and photographs. Two hundred and ninety-four participants （24 solid waste collectors, eight municipal council members and 262 community members） participated in the study. The study revealed both insufficient budget （87.5%） and insufficient equipment （50%） as the most common policy challenges in implementing proper solid waste management. Solid waste collectors not being comfortable with their salaries （79.2%）, limited sensitization regarding solid waste management （66%） and limited necessary tools （58.3%） as other challenges faced by solid waste management policy makers and implementers and finally, community members having limited awareness about laws governing solid waste management （61.1%）. In conclusion, insufficient budget, insufficient equipment, poor motivation and inadequate sensitization were found to be the major reasons as to why there was still improper solid waste management in Mbarara municipality, western Uganda.
文摘Gross pollutants are the primary targeted pollutants in urban catchment management for urban water quality improvement as well as mitigation of flood. Apart from aesthetically unattractive because of its visibility, gross pollutants also contributes to degradation of river water quality and loss of aquatic habitat as it carries harmful pollutants such as oxygen demanding material, hydrocarbons and heavy metals. This study analyzed trend of gross pollutant generated from two urban residential areas located in Selangor, Malaysia. The median value of gross pollutant load obtained fi＇om the Amanah Apartment and Bandar Botanic are 347.41 kg/ha/year and 32.46 kg/ha/year, respectively. Relationship between gross pollutant wet load with rainfall depths was derived using regression equation. A significant trend of increasing gross pollutant wet load into drainage system with increasing rainfall depth was observed. The behavior of pollutant load is related to the one observed in Australia.
