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Positive Well-Being and Work-Life Balance among UK Railway Staff  [PDF]
Jialin Fan, Andrew P. Smith
Open Journal of Social Sciences (JSS) , 2017, DOI: 10.4236/jss.2017.56001
Abstract:
Failure to manage the well-being and work-life balance of railway workers may result in an increased risk to train safety and employees’ health. This article reports the findings of a study that measured positive well-being and work-life balance, and identified the factors affecting these among UK railway staff. On the whole, staff who perceived high levels of control and support had a better work-life balance and an increased sense of well-being. A positive personality was associated with positive well-being both at work and outside of work.
Evolution of domain structure being the determinant in the mechanical fatigue process of railway wheelset wheel material
Zbigniew H. ?UREK,Marek SITARZ
Transport Problems : an International Scientific Journal , 2007,
Abstract: Investigation of fatigue processes on the basis of domain structure imaging makes possible identification of material zones and fatigue degree and will permit the introduction of changes in the wheel construction at the design stage. Investigation results of domain structure of wheelset’s rolling surface subjected to contact loads and material samples subjected to cyclic loads have been presented in this paper.
Staff Conduct, Communication, Access to Service & Customer Satisfaction: The Mediating Effect of Credibility
American Journal of Economics , 2012, DOI: 10.5923/j.economics.20120001.09
Abstract: This study examines the direct effects of staff conduct, communication, access to service, and credibility on satisfaction towards telecommunication services in Malaysia. The study took place in a public university to see whether the lecturers are happy with the services provided by the telecommunication firms. There are a total of 100 responses to the questionnaire developed. The data is analyzed using Structural Equation Modeling (SEM) through AMOS. The goodness of fit indices of the revised structural model indicate adequate fit (GFI: 0.915, RMSEA: 0.048, Ratio: 1.21, P-value: 0.158). The regression parameter estimates show four significant relationships between credibility and staff conduct (β=0.295, P-value=0.003 and C.R=2.93), credibility and communication (β=0.76, P-value=0.000 and C.R=8.996), satisfaction and access to service (β=0.316, P-value=0.000 and C.R=3.673) and satisfaction and credibility (β=0.945, P-value=0.035 and C.R=2.05). The result is discussed in the context of improving telecommunication services in Malaysia.
The Mediating Effect of Person-Environment Fit on the Relationship between Organisational Culture and Staff Turnover  [cached]
KamarulZaman Ahmad
Asian Social Science , 2012, DOI: 10.5539/ass.v8n2p62
Abstract: The purpose of this study was to investigate the mediating effect of person-environment fit on the relationship between organisational culture and staff turnover intentions. Data were obtained from full-time employees who were working in private and public sectors from various organisations in Malaysia (n = 204). Person-environment fit was found to be a significant mediator of the relationship between organisational culture and staff turnover intentions. This has wide-ranging implications for organisational development consultants who intend to shape the culture of various organisations, on the assumption that certain organisational cultures directly lead to certain desirable employee outcomes. Managers need to pay attention to not only their organisational culture such as training, rewards, teamwork and communication but to also ensure that they are aimed towards improving the fit between individuals and their work environment. Whereas previous research tends to look at P-E fit as a predictor of employee outcomes, this is one of the first few studies to provide evidence of P-E fit as a mediator of the relationship between organisational culture and staff turnover intentions.
Fatigue Damage Estimation in Existing Railway Steel Bridges by Detailed Loading History Analysis  [PDF]
Alessio Pipinato,Carlo Pellegrino,Claudio Modena
ISRN Civil Engineering , 2012, DOI: 10.5402/2012/231674
Abstract: Fatigue life estimation of metal historical bridges is a key issue for managing cost-effective decisions regarding rehabilitation or replacement of existing infrastructure. Because of increasing service loads and speeds, this type of assessment method is becoming relevant. Hence there is a need to estimate how long these structures could remain in service. In this paper a method to estimate fatigue damage in existing steel railway bridges by detailed loading history analysis is presented. The procedure is based on the assumption that failure probability is a function of the number of predicted future trains and the probability of failure is related to the probability of reaching the critical crack length. 1. Introduction A relevant amount of the bridges in the European railway networks are metal made and have been built during the last 100 years. The increasing volume of traffic and axle weight of trains means that the current loads are much higher than those envisaged when the bridge was designed. In this context, issues as maintenance, assessment, rehabilitation, and strengthening of existing bridges assume a significant importance [1, 2]. The authors have developed some works concerning assessment and fatigue behavior of metal railway bridges by means of full-scale experimental testing. In particular in Pipinato et al. [3, 4] full-scale tests on dismantled steel bridges have been developed, whereas assessment of existing bridges and estimation of their remaining fatigue life are shown in Pipinato and Modena [5] and Pipinato et al. [6]. Moreover, a comprehensive method to assess the reliability of existing bridges taking fatigue into account has been recently published [7]. Among historical metal bridges, riveted structures are the most common; the role of riveted connections in the fatigue assessment is documented by several researches, such as, in Bruhwiler et al. [8], Kulak [9], Akesson and Edlund [10], Di Battista et al. [11], Bursi et al. [12], Matar and Greiner [13], Boulent et al. [14], Albrecht and Lenwari [15], Kühn et al. [16], Albrecht and Lenwari [17], and Brühwiler et al. [18]. Fatigue is one of the most common causes of failure in riveted bridges, as highlighted by the ASCE Committee on Fatigue and Fracture Reliability [19] and confirmed by Byers et al. [20]. Increasing loads on existing riveted bridges and the fact that these bridges were not explicitly designed against fatigue-raised questions regarding their remaining fatigue life. As a consequence, a better knowledge of the loading history is needed, having a relevant role in the
Stress, Health and Well-Being: The Mediating Role of Employee and Organizational Commitment  [PDF]
Ajay K. Jain,Sabir I. Giga,Cary L. Cooper
International Journal of Environmental Research and Public Health , 2013, DOI: 10.3390/ijerph10104907
Abstract: This study investigates the mediating impact of organizational commitment on the relationship between organizational stressors and employee health and well-being. Data were collected from 401 operator level employees working in business process outsourcing organizations (BPOs) based in New Delhi, India. In this research several dimensions from ASSET, which is an organizational stress screening tool, were used to measure employee perceptions of stressors, their commitment to the organization, their perception of the organization’s commitment to them, and their health and well-being. Data were analyzed using structural equation modeling on AMOS software. Results of the mediation analysis highlight both employee commitment to their organization and their perceptions of the organization’s commitment to them mediate the impact of stressors on physical health and psychological well-being. All indices of the model fit were found to be above standard norms. Implications are discussed with the view to improving standards of health and well-being within the call center industry, which is a sector that has reported higher turnover rates and poor working conditions among its employees internationally.
A Comparative Investigation between Rolling Contact Fatigue and Wear of High-speed and Heavy-haul Railway
高速与重载铁路的疲劳磨损对比研究

ZHONG Wen,DONG Lin,WANG Yu,ZHU Wei-bing,LIU Qi-yue,
钟雯
,董霖,王宇,朱维兵,刘启跃

摩擦学学报 , 2012,
Abstract: Rolling contact fatigue (RCF) and wear are inevitable problems for the infrastructure of modern railway. The rolling tests of railway rail were performed using a JD-1 wheel/rail simulation facility without any lubricant. The failure behavior of rail rollers with different axle load and speed was investigated in detail by examining wear volume and wear scar using optical microscopy and scanning electronic microscopy. The results indicate that the crack propagation was more significant and fatigue damage was more severe at high speed. The wear volume of rail roller became larger on heavy haul railway. The results show that there was a mutual competitive relationship between wear and surface fatigue crack. A high wear rate can reduce rolling contact fatigue damage by removing surface cracks.
铁路钢桥节点既有腐蚀疲劳裂纹扩展寿命
Corrosion fatigue crack propagation life of joints of railway steel bridge
 [PDF]

刘〓嘉,季则亮,瞿伟廉,卢家星
- , 2018,
Abstract: 为评估服役中铁路钢桥由于环境腐蚀作用产生初始裂纹后的剩余疲劳寿命,对列车行走荷载作用下铁路钢桥节点横梁处在环境腐蚀形成初始裂纹后的疲劳裂纹扩展寿命进行研究。以铜九(铜陵―九江)线鄱阳湖铁路钢桥为背景,基于子模型法的多尺度建模方法,运用通用有限元软件建立铁路钢桥整体壳体模型和节点横梁处含初始裂纹的精细网格划分的实体模型,获得了在列车行走荷载作用下铁路钢桥节点横梁处的精确动应力响应;基于断裂力学的四参数Forman公式对铁路钢桥在4种不同初始裂纹长度下的腐蚀疲劳裂纹扩展寿命进行了评估与对比,并对有无环境腐蚀作用下的疲劳裂纹扩展寿命进行了对比分析。结果表明:基于子模型法的壳?彩堤宥喑叨冉?模方法既可以满足大型复杂结构在数值计算过程中的计算效率,又能够满足评估疲劳寿命计算所需的精确动力响应要求,可以精确评估铁路钢桥腐蚀疲劳裂纹扩展寿命;铁路钢桥既有腐蚀疲劳裂纹扩展寿命主要产生在小裂纹扩展阶段,计算得到0.5 mm初始裂纹扩展到10 mm时需要循环??484 509??次,占总扩展寿命的50.2%;铁路钢桥疲劳裂纹扩展寿命受环境腐蚀的影响非常大,其比无腐蚀疲劳裂纹扩展寿命降低79%左右。研究结果可为预测疲劳裂纹发展趋势、评估铁路钢桥剩余寿命和评定结构的安全性与运营能力提供参考。
In order to evaluate the residual fatigue life of the serviced railway steel bridge after the occurrence of initial crack due to the environmental corrosion, the corrosion fatigue crack propagation life of crossbeam region on joints of steel railway bridge after the existence of corrosion fatigue crack in the environmental corrosion was studied under the train running load in this paper. Taking the Poyang Lake Railway Steel Bridge on Tongjiu (Tongling to Jiujiang) Line as a research background, the integral shell element model of steel railway bridge and the finely meshed solid model of joints with initial crack were established by using general finite element software based on the multi??scale modeling method of the sub??model method. The precise dynamic stress response of the joints of steel railway bridge was obtained under the train running load. The corrosion fatigue crack propagation life of steel railway bridge with four different initial crack lengths were evaluated and compared based on the four parameters Forman formula, and the crack propagation life with or without environmental corrosion of railway steel bridge was analyzed and compared. The results show that the shell??solid multi??scale modeling method based on the sub??model method can not only meet the computational efficiency of the large??scale complex structure in the numerical calculation process, but also meet the requirements of precise dynamic response required for the calculation of fatigue life, and it can accurately evaluate corrosion fatigue crack propagation life of railway steel bridge. The corrosion fatigue crack propagation life of railway steel bridge is mainly produced in the small crack propagation stage, a 0.5 mm initial crack enlarging to 10 mm needs cycle 484 509 times, it account for 50.2% of the total propagation life. The fatigue crack propagation life of railway steel bridge is largely affected by environmental corrosion, and it is reduced by 79% compared with the fatigue crack propagation life without corrosion. The
Levels of Anxiety, Fatigue, Satisfaction and Self-esteem of Nursing Staff in Public Hospitals of Ilia
Theodosios Stavrianopoulos,Stamatia Stamati,Eleftheria Gevreki,Ourania Gourvelou
To Vima tou Asklipiou , 2011,
Abstract: Job burnout is defined as a syndrome - a complex product of emotional exhaustion, depersonalization and reduced personal achievements that can occur to people who work extensively with many other people under considerable time pressure. Aim: The investigation and measurement of factors contributing in the creation of stress and fatigue of nursing staff so as the satisfaction and self-esteem that nurses live during their professional career. Material and methods: The study population included 167 employees of regular nursing staff working in three public hospitals of the province. Data was collected by completing anonymous structured questionnaire. The program used for entering coded data and statistical processing was SPSS 11.0. Results: Statistical analysis showed that females reported "good" and "very good" emotional status than males with a statistically significant difference, p <0.001. Also, the men surveyed were satisfied with their profession 'often' and 'very often' compared with women with a statistically important difference, p <0.005. Τhe greater the seniority of the respondents the more they say that fatigue at the during the shift. The observed difference is statistically significant at a p level of less than 0.05. Finally there was little statistically significant positive correlation between years of work and fatigue. (p=0,004). Conclusions: Health professionals are more prone to fatigue than other professional workers because they are responsible for human lives and their actions have a significant impact on these people, the workload given to them is very high.
Meaning in life and well-being of older stroke survivors in Chinese communities: Mediating effects of mastery and self-esteem  [PDF]
Jingjin Shao, Jiliang Shen, Qinghua Zhang, Tian Lin
Health (Health) , 2013, DOI: 10.4236/health.2013.54098
Abstract:

The study aims to examine the role of mastery and self-esteem as a potential mediator of the relationship of meaning in life and well-being among older Chinese stroke survivors. A cross-sectional study was conducted in 214 community-dwelling older stroke survivors (128 men and 86 women), ranging from 60 years to 88 years old. The meaning in life, mastery, self-esteem and subjective well-being were measured. The results indicated that: 1) The meaning in life and subjective well-being of stroke survivors were significantly positive correlated; 2) Mastery and self-esteem played partial mediating roles between existential vacuum and subjective well-being; Self-esteem played full a mediating role between suffer acceptance and subjective well-being; Mastery played a full mediating role between life control and subjective well-being; Mastery played a partial mediating role between death acceptance and subjective well-being; Self-esteem also played a partial mediating role between mastery and subjective well-being.

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