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Adverse effects of shift work at a biscuits manufacturerMhlongo, Philisiwe Kenlly January 2017 (has links)
Submitted in fulfilment of the requirements for the Degree of Masters in Technology: Environmental Health, Durban University of Technology, 2017. / Shift work is a necessity for many organizations. Reasons for shift work are mainly to ensure continuous and optimized operations. Many studies on shift workers have concluded that it can lead to adverse physiological, social and psychological health effects. This study examines challenges associated with working shifts at a biscuits manufacturing factory. Results should be able to assist the employer in implementing effective interventions directed at limiting the negative effects of shift work on employees.
This is a convergent parallel design multi method stud among 152 shift workers in a biscuits manufacturer located in Durban, KwaZulu Natal. An abbreviated and modified form of the validated SSI questionnaire was used (Barton et al. 1995). The questionnaire contained a battery of items designed to examine the relationship of health and personal adjustment to shift work. Owing to the exploratory nature of the study, a focus group methodology was also used and this allowed for in-depth qualitative research which catered for a more comprehensive understanding of the current shift work issues. A retrospective review of injury records of employees who sustained occupational injuries between 2012 and 2013 was also conducted.
The sample comprised of 85 (56%) males and 63 (42%) females. Logistic regression was used to estimate the association between shift work and the likelihood of sleep disturbance, poor health outcomes and limited time for social and domestic activities, adjusting for age, sex, partner working, years working night shift, marital status, job class and years employed. Odds ratio (OR) for reported sleep disturbance was slightly higher among women (OR=1.65; 95% CI = 0.25; 10.84; p < 0.05) compared to males, but this was not statistically significant.
Longer shift work experience (i.e.11-20 years) was significantly associated with better health status (OR=0.18; 95%CI = 0.06; 0.46; p < 0.05). Shift work experience (11 to 20 years) was also found to be significantly associated with limited time for both social (OR = 0.10; 95%CI = 0.03; 0.30) and domestic activities (OR= 0.25; 95% CI = 0.11; 0.57; p < 0.05) (Table 4). Age had no effect on social and domestic activities, but those 40 years and above were more likely to have limited time for social and domestic activities (OR = 3.06; 95%CI =0.60; 15.60 and OR= 2.5; 95%CI=0.47; 13.06). Those with more shift work experience seemed to have more time for social and domestic activities compared to those with less than 10 years experience.
Findings from the FGD’s revealed that most participants (91%) did not get sufficient sleep time after night shift; this was mainly because of the chores they had to do after getting home form night shift and disturbances from the household and neighbours. The average time spent sleeping by majority of participants after night shift was 5 hours. Swollen feet, gastric, sleep disorders, indigestion and headaches were some common complaints experienced by shift workers in this study. About 27% of participants reported to have been injured at work before. These incidents were reported to be related to drowsiness and fatigue.
The company’s incident records showed a total of 160 injuires between 2012 and 2013, of which 38 occurred during night shift. In 2012, the company recorded 65 injuries which included 51 first aid (FA) injuries, 6 minor injuries (MI) and 8 lost time (LT) injuries, as categorized by the company. 2013 had the highest number of incidents, with 95 total injuries, averaging to 7.9 injuries annually. There were 84 first aid incidents recorded for year 2013, 9 minor injuries and only 2 lost time injuries. Twenty three percent (15, n=65) incidents occurred during night shift in year 2012, of which 11% (7, n=65) were females. The number of night shift incidents slightly increased to 24% (23, n=95) in 2013 and females accounted for 9.40%. The records showed that majority of injuries happened between 17h00 and 21h00 at night.
Results of this study provides evidence that shift work impacts negatively on the lives of the employees and can lead to adverse health outcomes such as poor dietary intake, headaches and swollen feet to mention but a few. / M
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Night of the twisters: A comprehensive unitBrown, Shawn Davis 01 January 2004 (has links)
The purpose of the project was to develop a comprehensive literature unit that integrates essential meteorology study within the relevant chapters of the book. Since the development of such a unit needed to encompass much more than merely the reading of the book and the study of applicable meteorological material, a multi-faceted literature experience was designed.
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The Influence Of Jazz On Timbre In Selected Compositions For Solo TromboneAldag, Daniel J. 12 1900 (has links)
A significant body of solo literature for the trombone has been written in the last fifty years that draws as much from the jazz tradition as from that of European classical music. While much attention has been paid to these works' use of characteristic jazz rhythms, harmonies and melodic inflections, there has been little focus on timbre, the musical element that perhaps most readily distinguishes jazz from other styles of Western music. This paper focuses on the important role jazz timbres should play in a performer's interpretation of those works that are significantly influenced by jazz. It includes explorations of the significant differences in concepts of timbre between European classical music and jazz, some of the ways in which these timbral differences are produced, and methods by which performers can develop the skills necessary to produce these varied timbres. Particular attention is paid to the importance of timbre to idiomatically appropriate performances of two significant works from the solo trombone repertoire, Robert Suderburg's Night Set (Chamber Music III) and Richard Peaslee's Arrows of Time.
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Nová synagoga Trutnov / New synagogue in TrutnovRudolecká, Anna January 2020 (has links)
The assignment of the diploma thesis was the elaboration of an architectural study of a new synagogue in the town of Trutnov, on the site of the original Jewish synagogue, which was burned down during the November pogrom, the so-called Crystal Night in 1938. Nowadays, the synagogue area is modified and serves as a place of reverence to honour the memory of the victims and to commemorate these historical events. The result of the design is a new community centre. Its goal is to restore the existence and support the development of the Jewish community, which disappeared in Trutnov after the Second World War. In the area there is the seat of the Jewish community, a ritual cleansing bath Mikveh, Kosher restaurant and a new synagogue, which respects the location of the former synagogue on the site of the original foundations. The new Jewish community centre ensures the operation of the entire Jewish community in Trutnov. Part of the Jewish community centre is a large courtyard, which is used to celebrate Jewish holidays and also as a summer terrace for Kosher restaurant, which will be used by the Jewish community, but also by the inhabitants of Trutnov. This creates an attractive place to spend free time with a view of the nearby Giant Mountains and the historic centre of Trutnov, but at the same time it is protected from the bustle of the adjacent main street.
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Konfigurovatelná vestavná foto/videopast se záznamem dat a samočinnou adaptací na okolí / Configurable Embedded Photo/Video Trap with Storing Data and Self Adaptation to SurroundingsVýborný, Filip January 2015 (has links)
This diploma thesis deals with a design and construction of an embeded camera trap with a video recording and night vision support, which is able to self adapt to surroundings. The device is based on the Raspberry Pi platform and configurable by touch screen control with a user-friendly graphical interface. Also the web-application for easy remote administration was developed in Ruby On Rails framework. The camera trap was built and successfully tested under the real conditions. There are also typical application cases and requirements for camera trap construction described in this thesis.
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Analýza výluk na železničních tratích / Railway Tracks Possessions AnalysisŠmíd, Tomáš January 2017 (has links)
The thesis deals with describing, evaluating, and proposing of possible changes in planning, placement and describing possession activities on railway lines in order to improve transmission and quality of the services provided by the SŽDC. The first chapter describes the environment of rail transport focusing mainly on law and regulations. The second chapter describes the aim of the study, additional category focuses on describing the method of processing of materials. The fifth chapter focuses on selected lines to describe the various closures in specific line sections. Sixth chapter aims on comparison methods of implementation lockout activities on examined lines. The last chapter has to summarize and evaluate results to submit any additional recommendations.
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Sleep and Dream-States in Literature, Science, and Medicine, 1700-1899Stephanie L. Schatz (5930234) 12 December 2019 (has links)
The purpose of this study as been to contribute to the emerging interdisciplinary field of historical sleep studies, which spans the biological and social sciences, legal studies, and the humanities. As an interdisciplinary scholar based primarily in the humanities, my goals have been twofold: to develop a critical archive for the use of scholars in this emerging field; and to demonstrate how that archive might be used to productive effect in literary studies. To that end, this project begins with a critical introduction to the field of sleep studies and its relationship to eighteenth- and nineteenth-century thought and follows with two distinct but connected sections: the archive itself and a short series of literary case-studies drawn from across the eighteenth and nineteenth centuries. My hope is that these case studies will show how the materials in the archive allow literary scholars to produce new insights about familiar, canonical texts. <br>
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Evaluation of Thermal Comfort and Night Ventilation in a Historic Office Building in Nordic ClimateBakhtiari, Hossein January 2020 (has links)
Envelopes with low thermal performance are common characteristics in European historic buildings resulting in insufficient thermal comfort and higher energy use compared to modern buildings. There are different types of applications for the European historic buildings such as historic churches, historic museums, historic theatres, etc. In historic buildings refurbished to offices, it is vital to improve thermal comfort for the staff. Improving thermal comfort should not increase, preferably reduce, energy use in the building. The overall aim in this research is to explore how to improve thermal comfort in historic buildings without increasing, preferably reducing, energy use with the application of non-intrusive methods. This is done in form of a case study in Sweden. Thermal comfort issues in the case study building are determined through a field study. The methods include field measurements with thermal comfort equipment, data logging on BMS, and evaluating the occupant’s perception of a summer and a winter period indoor environment using a standardized questionnaire. According to questionnaire and thermal comfort measurements results, it is revealed that the summer period has the most dissatisfied occupants, while winter thermal comfort is satisfactory – but not exceptionally good. Accordingly, natural heat sinks could be used in form of NV, as a non/intrusive method, in order to improve thermal comfort in the building. For the historic building equipped with mechanical ventilation, NV strategy has the potential to both improve thermal comfort and reduce the total electricity use for cooling (i.e. electricity use in the cooling machine + the electricity use in the ventilation unit’s fans). It could decrease the percentage of exceedance hours in offices by up to 33% and reduce the total electricity use for cooling by up to 40%. The optimal (maximum) NV rate (i.e. the potential of NV strategy) is dependent on the thermal mass capacity of the building, the available NV cooling potential (dependent on the ambient air temperature), COP value of the cooling machine, the SFP model of the fans (low SFP value for high NV rate is optimal), and the offices’ door scheme (open or closed doors).
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Motiv "noci" u Jana od Kříže a v současné spiritualitě / Theme of "night" in John of the Cross and in the current spiritualityAndil, Jan January 2018 (has links)
This thesis deals with the theme of the dark night in the work of St. John of the Cross and its influence on the formation of contemporary spiritual authors. Firstly, it focuses on the Spanish Carmelite mystic, John of the Cross social and biographical facts. These provide background to John's spiritual formation and without them the symbol of the dark night loses its historical context. This is followed by a list and brief description of the key works of John of the Cross. Of these texts, the dark night motif is dealt with in "Ascent of Mount Carmel" and "Dark Night," which constitute two aspects of a single journey leading to union with God. We encounter the dark night motive itself in the third chapter. First, we look at the dark night as described by John from the Cross. Then we focus on the symbolism of the dark night in the saint's work, its articulation and outcome. The last chapter introduces us to the view of contemporary spiritual authors, namely Thomas H. Greene, Thomas Halik, Iain Matthew, Gerald G. May, and Wilfrid Stinissen on the dark night theme.
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Modeling of low illuminance road lighting condition using road temporal profileDong, Libo 05 October 2015 (has links)
Indiana University-Purdue University Indianapolis (IUPUI) / Pedestrian Automatic Emergency Braking (PAEB) system for avoiding/mitigating
pedestrian crashes have been equipped on some passenger vehicles. At present,
there are many e orts for the development of common standard for the performance
evaluation of PAEB. The Transportation Active Safety Institute (TASI) at Indiana
University-Purdue University-Indianapolis has been studying the problems and ad-
dressing the concerns related to the establishment of such a standard with support
from Toyota Collaborative Safety Research Center (CSRC). One of the important
components in the PAEB evaluation is the development of standard testing facili-
ties at night, in which 70% pedestrian crash social costs occurs [1]. The test facility
should include representative low-illuminance environment to enable the examination
of sensing and control functions of di erent PAEB systems. This thesis work focuses
on modeling low-illuminance driving environment and describes an approach to recon-
struct the lighting conditions. The goal of this research is to characterize and model
light sources at a potential collision case at low-illuminance environment and deter-
mine possible recreation of such environment for PAEB evaluation. This research is
conducted in ve steps. The rst step is to identify lighting components that ap-
pear frequently on a low-illuminance environment that a ect the performance of the
PAEB. The identi ed lighting components include ambient light, same side/opposite
side light poles, opposite side car headlight. Next step is to collect all potential pedes-
trian collision cases at night with GPS coordinate information from TASI 110 CAR
naturalistic driving study video database. Thirdly, since ambient lighting is relatively random and lack of a certain pattern, ambient light intensity for each potential col-
lision case is de ned and processed as the average value of a region of interest on all
video frames in this case. Fourth step is to classify interested light sources from the
selected videos. The temporal pro le method, which compressing region of interest
in video data (x,y,t) to image data (x,y), is introduced to scan certain prede ned
region on the video. Due to the fact that light sources (except ambient light) impose
distinct light patterns on the road, image patterns corresponding to speci c light
sources can be recognized and classi ed. All light sources obtained are stamped with
GPS coordinates and time information which are provided in corresponding data les
along with the video. Lastly, by grouping all light source information of each repre-
sentative street category, representative light description of each street category can
be generated. Such light description can be used for lighting construction of PAEB
test facility.
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