• Journal of Korean society of Dental Hygiene
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• v.19 no.6
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• pp.1003-1013
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• 2019

Objectives: The purpose of this study was to examine the differences of dental hygienists in how they view their work and how they rate their emotional labor and occupational stress. Gathering this data was an effort to provide information on how to increase occupational satisfaction and improve work environments for dental hygienists. Methods: We analyzed data collected from 178 dental hygienists. The dental hygienists were randomly selected by convenience sampling from dental hospitals. Results: Our results showed that pediatric hygienists had more negative responses in regard to their views on their work. As for emotional labor, dental hygienists from pediatric dental clinics experienced heavier emotional labor than those from general dental clinics. On the other hand, dental hygienists from general dental clinics suffered more from occupational stress than pediatric dental hygienists did. Conclusions: Given the findings of this study, effective and ideal programs that promote occupational satisfaction for dental hygienists should be prepared, and strategies should be developed to resolve emotional labor and improve their work environments, as well.

• Steel and Composite Structures
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• v.1 no.4
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• pp.411-426
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• 2001

This paper treats the failure analysis of prestressing steel wires with different kinds of localised damage in the form of a surface defect (crack or notch) or as a mechanical action (transverse loads). From the microscopical point of view, the micromechanisms of fracture are shear dimples (associated with localised plasticity) in the case of the transverse loads and cleavage-like (related to a weakest-link fracture micromechanism) in the case of cracked wires. In the notched geometries the microscopic modes of fracture range from the ductile micro-void coalescence to the brittle cleavage, depending on the stress triaxiality in the vicinity of the notch tip. From the macroscopical point of view, fracture criteria are proposed as design criteria in damage tolerance analyses. The transverse load situation is solved by using an upper bound theorem of limit analysis in plasticity. The case of the cracked wire may be treated using fracture criteria in the framework of linear elastic fracture mechanics on the basis of a previous finite element computation of the stress intensity factor in the cracked cylinder. Notched geometries require the use of elastic-plastic fracture mechanics and numerical analysis of the stress-strain state at the failure situation. A fracture criterion is formulated on the basis of the critical value of the effective or equivalent stress in the Von Mises sense.

• MALSORI
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• no.42
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• pp.25-36
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• 2001

Stress assignment has been much discussed in the literature on English compound nouns. The general view of the stress pattern of English compound nouns is that a main stress falls on the first element and a secondary stress on the second element; however, a stress pattern is often employed that provides counterevidence to the traditional pedagogical approach. A new idea is suggested by Ladd(1984) that 'compound stress represents the deaccenting of the head of the compound.' Recent studies show that initial stressing does not indicate compounds and syntactic phrases are not always characterized by final stressing. In his pilot test Pennanen comments on the frequent variation of stress patterns on individual items, on the basis of which Bauer confirms Pennanen's results with different informants. This paper is an attempt to justify Bauer's analysis with the same data as Bauer's and different subjects. It turns out that the competences of native-speaker informants do not rovide clear-cut answers. Some factors should be taken into account in assigning appropirate stress to compound nouns.

• Journal of Korean Society of Steel Construction
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• v.8 no.4 s.29
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• pp.19-29
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• 1996

In this paper, it is presumed that the stress time history was generated by simulation method and investigated compatibility in regard to the reappearance of stress time history. In this procedure, the identified frequency distribution of stress range of the steel railroad bridge varies with the rational values of cut off point and bar width. Thus, we show variable aspect of the equivalent stress range results from change of cut off point and bar width. In addition, we analyze the variable of RMC and RMS model due to the cut off point and bar width of the measured stress history which influencs the prediction of fatigue life in the steel railroad bridge. The simulated stress time history is carried out by the superposition method incorporating the vertical load with rotation moment obtained from the Hermition interpolation function, and compared with developing stress results from measured maxi mum stress. Through this study, we can estimate the remaining fatigue life from a safety point of view and comparative accuracy.

• Journal of the Korean Society of Propulsion Engineers
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• v.1 no.1
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• pp.104-110
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• 1997

To predict the effect of ring expansion and ring compression on residual stress relief of Al 7175 ring rot]s, 2-D axisymmetric thermal analysis and elastoplastic analysis were performed. The residual stress distributions along the thickness of T73, T7351 and T7352 treated rings were measured using three step sectioning method. The measured results were compared to numerical ones for quenched and stress relieved rings. After quenching, calculated hoop and axial residual stresses were similar to measured ones for T73 treated rings. The residual stresses of T7351 and T7352 treated rings were decreased remarkably compared to T73 treated rings. The effect of axial residual stress relief was superior to that of hoop one, and also ring compression to ring expansion. It was concluded that ring compression is advantageous over ring expansion in view of stress relief effect and practicality, and vice versa in view of dimensional control and press power.

• Journal of Physiology & Pathology in Korean Medicine
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• v.30 no.6
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• pp.452-457
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• 2016

If human body is exposed to the continuous stress, it becomes allostasis load which is the condition of homeostasis broken. Its evolutional ecologic point of view and the relation with chiljeongsnag which is a theory in Oriental Medicine were investigated. Upon evolutional ecologic point of view by Maynard Smith, people can be divided by Hawks and Doves resulting in different types of allostasis in response of the stress. Hawks people who are active and aggressive get easily anger in the stressful situation to be vulnerable to the inflammatory hepatic diseases by enhancing Th1 immune system. On the other hand, Doves people who are passive and calm get easily depressed with sadness in the stressful situation to be vulnerable to the allergic pulmonary diseases by enhancing Th2 immune system. According to constitution theory of Oriental Medicine, Yangin and Eumin show the different features of responses to the stress generating Chiljeongsang. With excessive stress continuously, Yangin consider the feeling of anger mainly resulting in Qi reversal and liver damage, while Eumin consider the feeling of sadness mainly in consumption of Qi and lung damage. Hawks and Yangin, and Doves and Eumin show the common behaviors in response to the stress demonstrating the similar features including allostasis load and Chiljeongsang. In the clinical practices with the stressful patients, the viewpoint to consider the behaviors and feelings of the subjects to receive the stress simultaneously can be the new approaching method in Psychosomatic Medicine.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.3
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• pp.291-300
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• 2018

This descriptive study was conducted to determine the influence of stress coping styles of nursing students on problem solving ability. Data were collected from 142 nursing students in the M-area from September 20, 2016, to November 30 and analyzed using SPSS WIN 21.0. The average degree of stress coping styles was $3.36{\pm}.30$ (5 point-scale), problem solving abilities was $3.42{\pm}.38$ (5 point-scale). Among the subdomains of stress coping styles, problem focusing was highest, with a score of $3.60{\pm}.42$. Additionally, among the subdomains of problem solving ability, clarification was highest, with a score of $3.50{\pm}.51$. The problem solving abilities of nursing students showed a positive correlation with stress coping styles (r=0.53, p<.001) and was positively correlated with problem focusing (r=0.66, p<.001), positive point of view (r=0.53, p<.001), and social support navigation (r=0.42, p<.001). In addition, the factor with the greatest effect among subdomains of stress coping styles was problem focusing (${\beta}=0.416$, p<.001) and positive point of view (${\beta}=0.257$, p=.002). These two factors were found to explain 54.3% of the variance in problem solving ability. Therefore, the results of this study indicate that application of teaching-learning methods has the potential to improve students' problem-solving ability through problem-oriented and positive stress coping behavior.

• Structural Engineering and Mechanics
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• v.29 no.4
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• pp.423-431
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• 2008

With respect to thermal barrier coating, the analysis of interface cohesion and residual stress is important to the life of TBC from mechanical view point. Up to now, there is not a model of describing interface cohesion. In the paper, we give a simple model of computing residual stress and study the residual stress of TBC with ANSYS. The distribution of the residual stress in different interface topography and the relationship between the residual stress and the interface topography dimension are presented.

• Journal of Korean Society of Rural Planning
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• v.24 no.2
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• pp.59-67
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• 2018

As high-rise buildings came in, the landscape of rural areas and natural landscapes often got damaged. Therefore, this study aims to prevent this, grasp the extent of the influence of the surrounding landscape, to grasp the range of height that can be permitted and present the direction of landscape management of agriculture and natural landscape. This study tried to grasp the range of height by using price sensitivity analysis method for two apartment and apartment complex which entered DangJin city and SeoSan city. First, in the case of a two apartment, the range of the height allowable section was from the 6th floor to the 11th floor in close range view, and it was a section from the 7th floor to the 12th floor in medium range view. In the case of the apartment complex, the range of the height allowable range was from the 10th floor to the 17th floor in close range view, the 9th floor to the 16th floor in medium range view. The stress index was found to be positive in a two apartment in close range view, and in the apartment complex case. therefore it was better to set it to a lower in the Range of Acceptable Height(RAH). Second, it showed no difference in the sensitivity of landscape to gender. Thirdly, the results of the landscape sensitivity analysis of major and non-major showed the difference in the medium range view picture of the apartment complex. Majors are lower than the point of minimum height(PMinH) than non-Majors. In the case of major, the stress index was 1.4. it turned out that it was better to make a decision closer to point of minimum height (PMinH). In the case of non-major, the stress index was -1.3. it was also able to accept decision close to the point of maximum height (PMaxH). Since the results of the above research gave changes only in the variable of the height of the landscape, we can not grasp the point of interaction with other variables, and future research is considered necessary.

• Journal of Korean Foot and Ankle Society
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• v.18 no.4
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• pp.178-182
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• 2014

Purpose: The purpose of this study was to evaluate the frequency of troughing and stress fracture, which are the major complications of scarf osteotomy, and to suggest methods to prevent these complications. Materials and Methods: We reviewed 243 cases of 137 patients treated with the scarf osteotomy for hallux valgus from January 2005 to December 2012. The mean follow-up period was 2.8 years. During the scarf osteotomy, a long oblique longitudinal osteotomy was performed in order to decrease the possibility of troughing and stress fracture. Radiographs of lateral view of the foot were obtained and the thicknesses of the first metatarsal base at the sagittal plane were measured and compared. Results: There was no troughing during fragment translation and screw fixation intraoperatively. Radiographs of lateral view of the foot taken preoperatively and at the last follow-up showed that the mean thickness of the first metatarsal was 22.4 mm preoperatively and 21.6 mm at the last follow-up, with a mean difference of 0.8 mm. And no stress fracture was observed. Conclusion: To prevent troughing and stress fracture, a long oblique longitudinal cut, parallel to the first metatarsal plantar surface, was performed, making both ends of the proximal segment truncated cone-shape, and securing the strong bony strut of the proximal segment. No troughing or stress fracture was experienced with scarf osteotomy.