Based on the analysis of the common limitations of business processmanagement (BPM) methodologies and the requirements of small and medium sized-enterprises (SMEs),the importance of a 'performance construct' o...Based on the analysis of the common limitations of business processmanagement (BPM) methodologies and the requirements of small and medium sized-enterprises (SMEs),the importance of a 'performance construct' of BPM methodologies is identified, a six-phaseperformance-driven BPM methodology for the production and operation processes of Chinese SMEs isdeveloped. A case study on the process management of a medium-sized enterprise shows a successfulexample of running the methodology.展开更多
This article describes a sampling and estimation scheme for estimating the size of an injecting drug user (IDU) population by combining classical sampling and respondent-driven sampling procedures. It is designed to u...This article describes a sampling and estimation scheme for estimating the size of an injecting drug user (IDU) population by combining classical sampling and respondent-driven sampling procedures. It is designed to use the information from harm reduction programs, especially, Needle Exchange Programs (NEPs). The approach involves using respondent-driven sampling design to collect a sample of injecting drug users who appear at site of NEP in a certain period of time and to obtain retrospective self-report data on the number of friends among the IDUs and number of needles exchanged for each sampled injecting drug user. A methodology is developed to estimate the size of injecting drug users who have ever used the NEP during the fixed period of time, and which allows us to estimate the proportion of injecting drug users in using NEP. The size of the IDU population is estimated by dividing the total number of IDUs who using NEPs during the period of time by the estimated proportion of IDUs in the group. The technique holds promise for providing data needed to answer questions such as “What is the size of an IDU population in a city?” and “Is that size changing?” and better understand the dynamics of the IDU population. The methodology described here can also be used to estimate size of other hard-to-reach population by using information from harm reduction programs.展开更多
为了减小外部驱动IV型弯张换能器长度,提高此类换能器的实用性,提出在弯张壳长轴方向设计一U型凹槽、驱动单元置于凹槽内驱动的方案。利用有限元软件重点分析U型凹槽尺寸对换能器谐振频率和体积位移的作用规律,同时结合水中模型的发射...为了减小外部驱动IV型弯张换能器长度,提高此类换能器的实用性,提出在弯张壳长轴方向设计一U型凹槽、驱动单元置于凹槽内驱动的方案。利用有限元软件重点分析U型凹槽尺寸对换能器谐振频率和体积位移的作用规律,同时结合水中模型的发射电压响应,设计了一款谐振频率为2.2 k Hz、-3 d B带宽为330 Hz的嵌入式外部驱动IV型弯张换能器。这种结构的换能器不仅吸收了已有外部驱动IV型弯张换能器的优点,还弥补了其长度尺寸过大的缺陷。展开更多
文摘Based on the analysis of the common limitations of business processmanagement (BPM) methodologies and the requirements of small and medium sized-enterprises (SMEs),the importance of a 'performance construct' of BPM methodologies is identified, a six-phaseperformance-driven BPM methodology for the production and operation processes of Chinese SMEs isdeveloped. A case study on the process management of a medium-sized enterprise shows a successfulexample of running the methodology.
文摘This article describes a sampling and estimation scheme for estimating the size of an injecting drug user (IDU) population by combining classical sampling and respondent-driven sampling procedures. It is designed to use the information from harm reduction programs, especially, Needle Exchange Programs (NEPs). The approach involves using respondent-driven sampling design to collect a sample of injecting drug users who appear at site of NEP in a certain period of time and to obtain retrospective self-report data on the number of friends among the IDUs and number of needles exchanged for each sampled injecting drug user. A methodology is developed to estimate the size of injecting drug users who have ever used the NEP during the fixed period of time, and which allows us to estimate the proportion of injecting drug users in using NEP. The size of the IDU population is estimated by dividing the total number of IDUs who using NEPs during the period of time by the estimated proportion of IDUs in the group. The technique holds promise for providing data needed to answer questions such as “What is the size of an IDU population in a city?” and “Is that size changing?” and better understand the dynamics of the IDU population. The methodology described here can also be used to estimate size of other hard-to-reach population by using information from harm reduction programs.
文摘为了减小外部驱动IV型弯张换能器长度,提高此类换能器的实用性,提出在弯张壳长轴方向设计一U型凹槽、驱动单元置于凹槽内驱动的方案。利用有限元软件重点分析U型凹槽尺寸对换能器谐振频率和体积位移的作用规律,同时结合水中模型的发射电压响应,设计了一款谐振频率为2.2 k Hz、-3 d B带宽为330 Hz的嵌入式外部驱动IV型弯张换能器。这种结构的换能器不仅吸收了已有外部驱动IV型弯张换能器的优点,还弥补了其长度尺寸过大的缺陷。
