Last data update: May 13, 2024. (Total: 46773 publications since 2009)
Records 1-5 (of 5 Records) |
Query Trace: Haight JM[original query] |
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Interpreting MSHA citations through the lens of occupational health and safety management systems: investigating their impact on mine injuries and illnesses 2003-2010
Yorio PL , Willmer DR , Haight JM . Risk Anal 2014 34 (8) 1538-53 Since the late 1980s, the U.S. Department of Labor has considered regulating a systems approach to occupational health and safety management. Recently, a health and safety management systems (HSMS) standard has returned to the regulatory agenda of both the Occupational Safety and Health Administration (OSHA) and the Mine Safety and Health Administration (MSHA). Because a mandated standard has implications for both industry and regulating bodies alike, it is imperative to gain a greater understanding of the potential effects that an HSMS regulatory approach can have on establishment-level injuries and illnesses. Through the lens of MSHA's regulatory framework, we first explore how current enforcement activities align with HSMS elements. Using MSHA data for the years 2003-2010, we then analyze the relationship between various types of enforcement activities (e.g., total number of citations, total penalty amount, and HSMS-aligned citations) and mine reportable injuries. Our findings show that the reduction in mine reportable injuries predicted by increases in MSHA enforcement ranges from negligible to 18%. The results suggest that the type and focus of the enforcement activity may be more important for accident reduction than the total number of citations issued and the associated penalty amount. |
Evaluation of complex and dynamic safety tasks in human learning using the ACT-R and SOAR skill acquisition theories
Oyewole SA , Farde AM , Haight JM , Okareh OT . Comput Human Behav 2011 27 (5) 1984-1995 This paper provides a human-centered analytical approach to learning dynamic and complex tasks using the Adaptive Control of Thought-Rational (ACT-R) and the State, Operator And Result (SOAR) models by comparing the task times of the model and the subjects. Twenty-one full time assembly line workers at a local computer company (14 men and 7 women) from ages 18-32 (Mean = 19.86 years, SD = 0.96 years) were randomly selected for this analysis. The task involved the placement of printed circuit board (PCB) components on the flow line of the desktop computer mother board manufacturing process. The overall timed performance of the subjects indicated that the match between the model and the subjects was good, resulting in an R(2)--value of 0.94. At the unit task level performance, and R(2)--value of 0.96 for placing the PCBs on the flow line. For tasks involving picking and searching of PCBs, the obtained R(2)--value was 0.76 and R(2) of 0.68 at the keystroke level. Findings revealed that the model already started out with a complete strategy of performing the task, whereas the human participants had to acquire additional learning information during the trials. Efforts will be made in the future to determine how the performance of the human subjects could be enhanced to meet or the same level as the model performance. (PsycINFO Database Record (c) 2011 APA, all rights reserved) (journal abstract). |
Determination of optimal paths to task goals using expert system based on GOMS model
Oyewole SA , Haight JM . Comput Human Behav 2011 27 (2) 823-833 Website users often experience several difficulties while trying to access or navigate a website. This is mostly due to their inability to familiarize themselves with the structures in the website or as a result of complex procedures which prevent them from reaching their goals. It is therefore, important to develop a methodology or guidance technique for assisting website users to achieve their goals. A type of expert system that provides the needed guidance necessary in order to achieve these goals was proposed in this paper. A sample website was initially designed, and the analysis of website menu structure was conducted. The rules to find the optimal path are established based on the Goals, Operators, Methods, and Selection rules (GUMS) model by considering individual preferences on input devices. Derivatives of the GUMS model such as the Cognitive Perceptual Model GUMS, Natural GUMS Language, GUMS Language and GUMS Language Evaluation and Analysis were reviewed. The Card, Moran and Newell (CMN) GUMS technique was selected as the primary inference engine of the proposed expert system. This was primarily based on the highly efficient and exemplary capability of the CMN-GUMS to predict both operator sequence and execution time. The expert system was finally constructed from the result of the acquired knowledge base and other applicable rules. (C) 2010 Elsevier Ltd. All rights reserved. |
Statistical evaluation and analysis of safety intervention in the determination of an effective resource allocation strategy
Oyewole SA , Haight JM , Freivalds A , Cannon DJ , Rothrock L . J Loss Prev Process Ind 2010 23 (5) 585-593 This paper provides an analytical background for the development of an effective safety intervention program with the aim of minimizing incident rates. Safety intervention data were collected from the environmental health and safety department of an American-owned oil company in the Niger-Delta region of Nigeria. A safety model was developed to determine the safety intervention factors and interactions which minimize incident rates, with the aim of predicting a better resource allocation strategy. Five main safety intervention factors (factor A: leadership and accountability; factor B: qualification selection and pre-job; factor C: employee engagement and planning; factor D: work in progress; factor E: evaluation, measurement and verification) were highlighted and investigated to show their effects on incident rate performance. Analysis of variance test showed that four safety factors (A, C, D, and E) were significant. Statistical techniques such as response surface design plots were used to determine the resource allocation method. The developed safety model recommended the allocation of 16.66% of the available resources to the significant safety intervention activities in order to achieve the desirable incident rate. In order to reap the benefits of this research, it will be important to concentrate more efforts and resources on significant factors which have positive impacts in minimizing incident rates. 2010 Elsevier Ltd. |
The ergonomic design of classroom furniture/computer work station for first graders in the elementary school
Oyewole SA , Haight JM , Freivalds A . Int J Ind Ergon 2010 40 (4) 437-447 Children have been known to spend over 30% of their time at school. Most classroom activities involve sitting for long periods of time, with little or no breaks. Every effort should be made to ensure that young children do not experience back pain and other musculoskeletal disorders due to prolonged sitting on improperly designed classroom furniture. This paper proposes a methodology and guidelines for the design of ergonomic-oriented classroom furniture for first graders in the elementary school. The anthropometric measures of twenty first graders were used to develop regression equations for the furniture dimensions. The analysis of the relevant anthropometric measures such as stature, weight, body mass index (BMI), popliteal height, buttock-popliteal length, and hip breadth shows that stature and body mass index are important factors in the design of the classroom furniture. Adjustability was incorporated into the design in order to recommend the appropriate dimensions for the design of the classroom furniture. Based on the need to accommodate at least 90% of the population of first graders in the United States, this paper proposes furniture design dimensions for seat height (25.83-32.23 cm): seat depth (27.41-33.86 cm); seat width (17.91-23.29 cm); back rest (35.64-44.37 cm); arm rest (16.28-20.68 cm); and desk height (30.12-37.85 cm). This anthropometric analysis could be used to design ergonomic-oriented classroom furniture which would not only incorporate adjustability, but also improve the level of comfort for the intended users. (C) 2010 Elsevier B.V. All rights reserved. |
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