1,720,985 research outputs found
Risk Assessment of Occupational Injuries in Underground Coal Mines
No full textSafety is paramount in the underground mining environment. The mining industry has for many years focused on injury prevention at the workplace through procedures and training, and has achieved considerable success. However, the statistics on major accident events and reportable incidents has not shown the corresponding levels of improvement. In the area of major hazards control, the mining industry approach has emphasized mainly on past experiences and lessons learnt. Preventive measures cannot be taken until the causes or sources of accidents are known. Risk management takes care of identifying the sources of accidents. The concept of risk management has come up as an effective tool of accident prevention in mining industry. The objectives of the work are estimation of the risks of different types of job and taking the preventive measures based on the results. Meeting the most recent state-of-the-art safety analysis offers the opportunity to improve product design, reduce accidents, and curb liability exposure. Unfortunately, safety is an issue that sometimes only receives considerable attention after an incident occurs. So far the risk assessment is done in coal mines based on the fatal injuries or disasters as a reactive measure. However, companies that proactively seize the opportunity can minimize the likelihood that an injury event will occur. This work is an endeavour to assess the risk of the reportable injuries of miners as a step of proactive measure
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Application of Shuttle Radar Topography Mission Data in Hydrological Analysis of Super Pit and Griffin Coal Mine
No full textIn the mining history, inrush of water is always an issue especially for the mines located in heavy rainfall areas. Nowadays, mining companies and research institutes have developed many advanced technologies for study and analysis of hydrological processes. In this paper, an advanced method is introduced, which uses the Shuttle Radar Topography Mission Digital Elevation Model (SRTM DEM) data in Geographical Information System (GIS) platform to simulate the stream distributions around two specific mines viz. Super Pit and Griffin coal mines in Western Australia. The impact of this approach is important, because it reduces the time and economic cost by creating high spatial resolution hydrological map in the specific areas. The results match with the ground reality. Based on the results, the stream structure around Griffin coal mine is more complicated than that of Super Pit. The Bi-furcation ratio and drainage density are computed to estimate the subsoil permeability characteristics of two mines. Recommendations have been put forward to prevent and reduce the potential risks of water accumulation around the open pit mines
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Lost work days as a measure of risk assessment in underground coal mines
No full textObjectives: Underground coal mining, has always been a dangerous occupation. Injuries are one of the major occupational risks that all miners live with. Reportable injury monitoring and data analysis can provide us valuable information on the causes of injuries and enable us to establish a model between the conditions in the work environment and the number of injuries, which can further lead to proper prevention and mitigation measures. Methods: In this study, a binary logistic regression method was applied to reportable injuries from February 1994 to January 2009 of an underground coal mine in India. The injury records were categorised on the basis of shift, occupation, body part injured and reason of injury as well as lost workdays, and the SPSS package was used for the analyses. Logistic regression method was applied to predict the probability of injuries that resulted in less or more lost workdays (threshold limit 9 days). Results: It is found that the shift variables did not have any significant effect on the lost workdays. Whereas, the occupation variable has the significant role with the injuries of greater than 9 lost workdays from reportable injuries were the miscellaneous job. Meanwhile, the body part variable with the highest risk was the torso. Additionally, employees engaged with manual and mechanical handling has significant role in more lost workdays. Conclusion: It is concluded that miscellaneous personnel are not properly trained for different jobs. As personal protective equipment is not used in torso; it leads to more lost days
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
- …
