منابع مشابه
Work Simplification
means of increasing worker productivity so that higher wages can be paid and as a means of getting the work done with a smaller labor force. A part, at least, of the difference between the level of mechanization here and abroad is explained by differences in wage rates. As wages go up, it pays to use more machines and fewer men. In recent years, for example, it took about 67 gallons of milk to ...
متن کاملFarm work practices and farm injuries in Colorado.
STUDY OBJECTIVE s: To describe the farm work patterns and the relationship between hours spent working on specific farm tasks and task specific work related injuries among women and men. DESIGN A cross sectional survey of farm operators and their spouses in an eight county area of Colorado was conducted. Personal interviews were conducted between 1993 and 1997. Interviews took between 45 minu...
متن کاملFrom Search to Computation: Redundancy Criteria and Simplification at Work
The concept of redundancy and simplification has been an ongoing theme in Harald Ganzinger’s work from his first contributions to equational completion to the various variants of the superposition calculus. When executed by a theorem prover, the inference rules of logic calculi usually generate a tremendously huge search space. The redundancy and simplification concept is indispensable for cutt...
متن کاملThe Conservation Reserve Program, Off-Farm Work, and Farm Household Technical Efficiencies
Using data from a national survey of farm households in the United States, this paper examines the effects of farm households’ decisions to participate in the Conservation Reserve Program (CRP) and to work off the farm on the technical efficiency of farm household production. After controlling for the self selection bias in estimating the multiple output-oriented distance functions, results sho...
متن کاملHybrid Petri Nets and Metaheuristic Approach to Farm Work Scheduling
Scheduling problems for general cases are characterized as NP hard, and the computation time required to obtain the optimal schedule will grow exponentially with the problem size. The scheduling problems that consider the limited or shared resources, alterable constraints or environmental changes become very complex in both formulation and solution. Since the solution for these problems has gre...
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ژورنال
عنوان ژورنال: Soil Science
سال: 1949
ISSN: 0038-075X
DOI: 10.1097/00010694-194910000-00008