Frequency Of Human Errors Research Articles

Investigating occupational accidents based on the Human Factors Analysis and System Classification (HFACS) method: a case study in an industrial and mining company

Background and aims: Human errors are a significant issue in various work environments, including industry and mining. This study aims to investigate occupational accidents in a large industrial-mining company based on the human factors analysis and classification system (HFACS) method. Materials and methods: The study conducted a retrospective longitudinal analysis of 253 mining industrial accidents from 2011-2019 using the Human Factors Analysis and Classification System (HFACS). Descriptive statistics, such as frequency and percentage of subgroups at each level, were calculated using the HFACS method and SPSS software. Results: The type of accident that occurred was related to throwing/collision or contact with a foreign object, which resulted in a total of 232 injured people and one dead person. Statistical analysis showed no significant link between the accident type and the educational levels of those involved, as indicated by a P-value greater than 0.05.Still, it showed a significant relationship with three other demographic variables: age, marital status, and work experience (P-Value˂0.05). The highest frequency and percentage of the causes of accidents were also due to organizational effects and unsafe practices. Discussion and conclusion:. The study found that the frequency of human errors in the levels of unsafe supervision and unsafe practices significantly contributed to the occurrence of occupational accidents in the company. Analyzing accidents and understanding the relationship between causal factors at the four levels of the HFACS method is vital for implementing effective strategies to reduce accidents.

Some Formal Semantics for Epistemic Modesty

Given the frequency of human error, it seems rational to believe that some of our own rational beliefs are false. This is the axiom of epistemic modesty. Unfortunately, using standard propositional quantification, and the usual relational semantics, this axiom is semantically inconsistent with a common logic for rational belief, namely KD45. Here we explore two alternative semantics for KD45 and the axiom of epistemic modesty. The first uses the usual relational semantics and bisimulation quantifiers. The second uses a topological semantics and standard propositional quantification. We show the two different semantics validate many of the same formulas, though we do not know whether they validate exactly the same formulas. Along the way we address various philosophical concerns.

A Reconfigurable Mechanism of Cantilever Storage Racks

An automated warehousing system often consists of storage modules, storage and retrieval mechanism, lifting equipment and conveyor systems. These facilities are used to overcome some disadvantages of manually operated warehousing systems which often lead to a high frequency of human errors, high labour cost and low efficiency. The usage of these automated facilities may also be helpful to maximise utilisation of shop floor space and improve efficiency of warehousing operations. On the other hand, at this age of information technology that the access to the internet is just at the fingertip, it has been seen a rising trend for online shopping in the past decade. Thus, manufacturers, suppliers or distributors have been seeking for even more efficient and effective new methods to store and distribute their goods. A number of studies through a literature review suggest that future generation warehouses may be designed and implemented as more centralised and distributed warehousing systems in which customers place their orders on-line and goods will then be dispatched directly to their door steps from these centralised distribution centres. This paper presents a proposal for designing and implementing future generation warehousing systems using fast-growing IT technologies such as radio frequency identification (RFID), wireless sensors and networks. The overall purpose of this study is to develop a conceptual design of an integrated system for future generation automated warehouses by incorporating a new design of storage and retrieval modules with the applications of these IT technologies used for automation activities. The presentation of this paper only highlights the part of this work including a design of a core mechanism for automated storage module namely the cantilever storage racks, which have the feature of scalability and reconfigurability.

Design and Evaluation of an Onboard Computer-Based Information System for Aircraft

Information seeking by human operators of technical systems is considered. Types of information and forms of presentation are discussed and important issues reviewed. This broad discussion provides a framework within which flight management is considered. The design of an onboard computer-based information system for aircraft is discussed. The aiding possibilities of a computer-based system are emphasized. Results of an experimental evaluation of a prototype system are presented. It is concluded that a computer-based information system can substantially lessen the frequency of human errors.

Adverse occurrences in the intensive care unit.

To the Editor.— Inasmuch as we have been studying the frequency of human error in the emergency center as a basis for improving the quality of medical care, we welcome this splendid article (1980;244:1582) that recommends vigorous investigation of hazards in hospital. We would like to call the attention of the Pittsburgh group to the well-documented diurnal rise in human error that peaks at about 3 AM and 3 PM. This interesting phenomenon has been confirmed in a variety of settings including gas company personnel reading meters, automatic train breakers, and near-misses in train and truck operators. It is perhaps more pertinent to point out that at 3 PM, detection of hypertension in the emergency center of a university-affiliated public general hospital fell to one third its previous rate. 1 We would like the authors' opinion as to the relevance of these findings to their observation that intensive care unit

Safety in civil engineering—Its perception and promotion

Some data from the field of civil engineering are presented as an indication of current risk-tolerance levels, and to exemplify the problem of irrational responses in society at large. The magnitude and frequency of human error is shown to be an important part of safety assessments. Though it is not yet possible to formulate a consistent set of laws for human error, numerous ways in which error can be minimized and safety enhanced have been established. Cost-benefit risk analysis offers the prospect of greater safety at given expenditure levels, or lesser expenditure to maintain a given safety level.