FINGER DISABILITIES AND HIGHER LEVEL TASKS – DEVELOPING AND VALIDATING MTM MULTIPLIERS

MTM multipliers are presented for higher level tasks such as manual lifting, lowering, carrying, and assembly with hands and assembly with manual tools. These MTM multipliers and those developed in the previous work were applied to estimate the cycle time of individuals with finger disabilities for a combination assembly and handling task. Once the cycle time was estimated, the actual task was performed and the performance cycle time was determined from video analysis. The estimated and observed cycle times were compared. Additionally, estimated and observed elemental times were compared. The results of statistical comparison indicated that the difference between the estimated and actual cycle times was insignificant (α ≥ 0.10). Further, elemental times based on observation were not significantly different from those estimated from multipliers established in the earlier work and the work presented here

DEVELOPING MTM MODIFIERS FOR FINGER DISABILITIES

Disability and rehabilitation research and practices have traditionally aimed at creating self-sufficiency and equal opportunities among individuals with disability. The need and benefits of such initiatives are important, particularly with the increasing influx of disabled individuals into the work force. It has become necessary focus on rehabilitating the disabled and special populations at the work place and to do it in an economically viable manner without adversely affecting productivity. Work standards have traditionally served as a reliable means of establishing consistent data on activity and job completion times for comparative, control, or remuneration purposes. However, with the changing demographics it is necessary that the standard times and the work measurement data developed for healthy population be tailored to fit the requirements of special populations. This experimental study aimed at providing modifiers to elemental tasks when performed by individuals with finger disabilities. These modifiers should provide the management with information necessary to integrate the disabled into the workforce. The study reported here simulated three kinds of finger disabilities while performing various assembly-disassembly tasks. Results indicated that there was a significant increase in performance times with disabilities, both at the elemental level and at the higher level. While the elemental time with disabilities increased by as much as 150%, overall times with disabilities increased by as much as 108%. Based on the results of the experimental simulation, generalized modifiers for PMTS tasks were developed in order to estimate performance times for individuals with finger disabilities

Synthesis and photophysics of 6-dimethylaminopurine-capped Q-CdS nanoparticles—a study of its photocatalytic behavior

Nanoparticles of CdS have been stabilized in aqueous medium by surface capping with 6- dimethylaminopurine at pH 11.0 in the presence of excess Cd2+. The nucleation of the cluster is controlled through coordination of 6-dimethylaminopurine via. -N(CH3)2 group. Excess 6-dimethylaminopurine binds to the core structure through H-bonding involving protonated N(9). CdS capped with 6-dimethylaminopurine produced relatively small sized particles (2 nm) having a narrow size distribution. These particles did not exhibit any Ostwald's ripening and its solid sample could be fully redispersed in aqueous medium. Thermolysis results in the growth of these particles but demonstrates a better photocatalytic activity. Relaxation kinetics reveals the surface to contain a large number of surface states and the emission is originated by the presence of sulfur vacancies on the particle. The addition of indole simply quenches the emission of CdS in a bimolecular collisional process at a diffusion-controlled rate of about 9×109dm3mol−1s−1. Irradiation of the reaction mixture containing CdS and indole by light of λ>360 nm results in the formation of indigo with a quantum efficiency of 0.1

Optimal regional water quality management by at-source treatment and effluent charges

Digitized by Kansas Correctional Industrie

Time Standards and Disability: A Work Measurement Perspective

Traditionally, work measurement has been concerned with establishing consistent data on activity and job completion times for comparative, control, and/or remuneration purposes. The application of accurate work standards is not only crucial from the employees’ point of view but is also very important for the employers as it gives a measure of the productivity, and also standardizes the time it takes for businesses to produce its products or services. With changing demographics and growing need to include special population into the work force, it is necessary to analyze, modify, and implement the tried and tested approaches to productivity and performance measurement and improvement. This paper investigates the need to revise work standards in order to accurately determine levels of productivity and job completion times for the disabled. Specifically, the objectives of this paper are: a) to help practitioners understand the concept of a fair day’s work when it comes to the special disabled population; and b) to scrutinize the relation between published research on disability, work standards, and the need to customize them for the disabled population

Product development: A structured approach to consumer product development, design, and manufacture

xviii+425hlm.;25c

IMPROVING MAINTAINABILITY OF PRODUCTS THROUGH THE ADOPTION OF A COMPREHENSIVE DfX METHODOLOGY

This paper presents a systematic methodology to enhance the maintenance operation of products and systems. This is accomplished through the adoption of Design for X (DfX) principles as well as the use of MTM systems. As the reader is aware, maintenance is often a necessary evil that is responsible for equipment downtime. However, lack of regular maintenance often results in serious equipment failure and resulting catastrophic consequences. The methodology presented in this paper deals with product design for maintenance. It also addresses the human factors associated with the maintenance operation. The authors have made a conscious effort to incorporate this factor into the methodology, given the labor intensive nature of virtually all maintenance operations. This paper is divided into two parts. The first part presents a very brief overview of some maintenance related concepts given limited space availability. The second part of the paper presents the aforementioned methodology. A real life case study is also used to corroborate the practical utility of the methodology