Metrics trailing

In the opinion of the Metrication Committee, there is no longer any question about eventual conversion to the metric system, and to SI in particular. The only question really is, when and how AIChE is following the practice being instituted by many technical societies we are not either leading or trailing significantly at present. 

Stevens and Bisacchi have carefully examined the trailing of benzynes, generated fiom a number of aryl bromides and sodium amide in THF, with 1,1-dimethylethylene and report procedures which afford 6 6% yields of 1,1-dimethoxycyclobutenes, e.g. (131). These compounds are hydrolyzed quantitatively to the corresponding benzocyclobutenones (132). Excellent regioselectivity was obtained with unsym-metrical benzynes derived from methoxy substituted bromobenzenes due to the polarized nature of the benzyne intermediate. Steric effects also influence regioselectivity o-bromotoluene afforded a 3 1 mixture of 3-methyl- and 6-methyl-benzocyclobutene. 

Mofron. J.L. Kuzmic. P. Kishore, V. Colonbonilla. E. Rich. D.H. Determination of kinetic constants for peptidyl prolyl cis trails isomerases by an improved spectrophoto-metric assay. Biochemistry 1991. 30, 6127-6134. 

With Stephen Newell s permission, I quote from relevant parts in his speech outline. When giving this permission, Mr. Newell asked that I also recognize the contributions of Ms. Dee Woodhull at ORC since the work on developing a text on metrics is a team effort. Note that a balanced approach is to be taken concerning leading, trailing, and financial measures. 

To repeat, it looks like the ORC Alternative Metrics Task Force is taking a balanced approach in its study of leading, trailing, and financial measures. The work of this task group could have a significant impact on the practice of safety. 

Very early in life people discover experience is a good teacher. This idea also applies to safety and health. Understanding what happened in incidents and why they occurred can lead to preventive actions for similar situations. Records of incidents offer reactive strategies to improve safety performance. They are trailing indicators of performance. Many organizations also compile data on leading indicators of safety performance. Leading indicators measure actions that can prevent incidents. Chapter 35 will explore both types of metrics further. 

Much of the discussion in this chapter focuses on required record keeping and reporting. A review of some of the federal requirements offers an idea of the volume and complexity of record keeping and reporting tasks. Readers should obtain laws, regulations, and standards important for their employers or clients to make sure they track the right information consistent with current rules and procedures. The discussion in this section provides examples in four areas. Most involve trailing metrics. 

An old business adage is, What gets measured gets attention. Traditionally, safety people used trailing indicators, metrics, or outcomes. Traditionally, the metrics included accident and incidents, lost time cases, injuries... 

Trailing indicators are the traditional metrics that measure past safety efforts (Dupont Corporation 2000). When using trailing indicators, data is collected after the fact (after a number of accidents or illnesses, after two years of workers compensation, etc.). Trailing indicators provide an organization with feedback in terms of how good performance has been over a period of time. Examples of trailing indicators include accident records, loss reports, injury and illness statistics, injury costs, and workers compensation costs. 

Trailing Indicators the traditional metrics that measure past safety efforts. 

There are many ways to categorize safety performance measures. They are often classified as trailing or leading indicators, outcome or process oriented, results or activity-based measures, downstream factors or upstream factors, and/or qualitative or quantitative metrics. 

For example, reducing the dependence on TCIR as the trailing indicator by using performance level metrics. 

There clearly is a need to use outcome measures ( downstream or trailing metrics) as a tool to compare results with other organizations. Using injnry rates as an exclnsive measnrement tool is inadequate for three reasons CP5d)us 1996) ... 

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