• Culinary science and hospitality research
• /
• v.18 no.4
• /
• pp.100-117
• /
• 2012

The purpose of this study is to investigate the structural relationships among frontline hotel employees' core-self evaluations (self-esteem, generalized self-evaluations, locus of control, and emotional stability) as personal resources, customer verbal aggression as a job stressor, and turnover intention as a job outcome. Data were gathered from a sample of frontline employees of 10 five-star hotels in Busan via self-administered questionnaires. A total number of 405 questionnaires were utilized. This study used structural equation modeling to verify the research model and hypotheses. As hypothesized, the results demonstrated that core-self evaluations reduced customer verbal aggression and turnover intention, and customer verbal aggression amplified turnover intention. Finally, practical implications were discussed in detail and limitations of the study and future research directions were also suggested.

• Management & Information Systems Review
• /
• v.33 no.2
• /
• pp.37-61
• /
• 2014

This research is to study presenteeism of members of a organization. It factually verifies how the job stress perceived by the members affect on presenteeism and examines factors to alleviate presenteeism, in addition, tests moderating effects based on the core self-evaluations and team climate. Research results reveal, first of all, that influencing relationship which job stress increases presenteeism exists. Second, core self-evaluations control the relationship between job stress and presenteeism, which means the stronger subconscious to oneself is the more it relieve the relationship between job stress and presenteeism. Third, team climate partially contolled the relationship between job stress and presenteeism. Atmosphere with clearer performance responsibility has better controlling effect to alleviate the relationship between job stress and presenteeism. Within the team climate, subordinate variables determine the effect on the presenteeism relationship. Significances and limitations of this research was discussed at the last.

• The Journal of Information Systems
• /
• v.32 no.3
• /
• pp.133-150
• /
• 2023

Purpose This study aims to develop classification models using a decision tree algorithm to identify core keywords and rules influencing online consumer review evaluations for the robot vacuum cleaner on Amazon.com. The difference from previous studies is that we analyze core keywords that affect the evaluation results by dividing the subjects that evaluate online consumer reviews into self-evaluation (star ratings) and peer evaluation (helpfulness votes). We investigate whether the core keywords influencing star ratings and helpfulness votes vary across different products and whether there is a similarity in the core keywords related to star ratings or helpfulness votes across all products. Design/methodology/approach We used random under-sampling to balance the dataset. We progressively removed independent variables based on decreasing importance through backwards elimination to evaluate the classification model's performance. As a result, we identified classification models that best predict star ratings and helpfulness votes for each product's online consumer reviews. Findings We have identified that the core keywords influencing self-evaluation and peer evaluation vary across different products, and even for the same model or features, the core keywords are not consistent. Therefore, companies' producers and marketing managers need to analyze the core keywords of each product to highlight the advantages and prepare customized strategies that compensate for the shortcomings.

• Journal of Sensor Science and Technology
• /
• v.25 no.4
• /
• pp.264-270
• /
• 2016

Self-powered neutron detector (SPND) is a sensor to monitor a neutron flux proportional to a reactor power of the nuclear power plants. Since an SPND is usually installed in the reactor core and does not require additional outside power, it generates electrons itself from interaction between neutrons and a neutron-sensitive material called an emitter, such as rhodium and vanadium. This paper presents the simulations of the depletion sensitivity evaluations based on MCNP models of rhodium and vanadium SPNDs and light water reactor fuel assembly. The evaluations include the detail geometries of the detectors and fuel assembly, and the modeling of rhodium and vanadium emitter depletion using MCNP and ORIGEN-S codes, and the realistic energy spectrum of beta rays using BETA-S code. The results of the simulations show that the lifetime of an SPND can be prolonged by using vanadium SPND than rhodium SPND. Also, the methods presented here can be used to analyze a life-time of those SPNDs using various emitter materials.

• 한국항공운항학회:학술대회논문집
• /
• 2016.05a
• /
• pp.259-263
• /
• 2016

본 연구에서는 종사자의 핵심자기평가가 창의적 행동 및 서비스생산성에 미치는 영향에 대하여 분석해 보았으며 실제 대표적 서비스기업인 항공운송업 종사자들을 대상으로 한 실증분석으로 시행하였다. 연구 결과를 요약해 보자면 신경증을 제외한 핵심자기평가는 창의적 행동에 유의한 영향을 미치고 있으며, 창의적 행동은 또한 서비스생산성에 유의한 양(+)의 영향을 미치고 있음을 알 수 있다. 한편 인구통계학적 특성에 기한 차이는 자아효능감의 경우 나이가 적을수록 평균값이 높게 나타나고 있으며 나이가 많아질수록 적어지는 것을 볼 수 있다. 이러한 현상은 통상적인 것이라 볼 수 있겠으나 요는 이러한 현상을 극복할 수 있는 방안에 대해 강구할 필요가 있으며 주로 임금인상이나 복지증진 등의 유인책을 활용해 보는 것이 바람직하다 할 것이다. 한편 신경증과의 관계에서 봤을 때 26-30세 정도에 급격히 증가하는 점을 볼 때 이 시기에 업무 관련 시행착오 혹은 업무에 대한 과오 등에 대한 중압감이 작용하는 것으로 볼 수 있으며 이러한 중압감에 기하여 업무에 소극적이 되지 않도록 할 필요성이 제기된다고 하겠다.

• Perspectives in Nursing Science
• /
• v.11 no.1
• /
• pp.74-85
• /
• 2014

Purpose: The purpose of this study was to investigate the relationships between anxiety, depression, low anterior resection syndrome, and quality of life after lower anterior resection for rectal cancer. Methods: The participants of this study were 105 rectal cancer patients who visited the outpatient department of a hospital in Seoul for treatment or follow-up consultations. Data were collected using self-reported questionnaires and clinical records. To measure the variables, the Hospital Anxiety and Depression Scale, Low Anterior Resection Syndrome Score, and Quality of Life Questionnaire-Core 30 were utilized. Data were subsequently analyzed using the SPSS/WIN 20.0 program. Results: Low anterior resection syndrome was more severe among patients whose cancer was located closer to the anus, and had a greater range of resection in those who received neoadjuvant treatment. When anxiety, depression, and low anterior resection syndrome score were higher, quality of life scores were lower. Conclusion: These results suggest that low anterior resection syndrome may negatively impact quality of life. Therefore, it is necessary to provide patients with symptom management support/assistance through evidence-based nursing interventions, and evaluations of low anterior resection syndrome to relieve anxiety and depression, and thus enhance quality of life.

• Journal of Korean Dental Hygiene Science
• /
• v.4 no.1
• /
• pp.65-77
• /
• 2021

Background: The purpose of the present study was to evaluate changes in the communication capabilities of dental hygiene students after completing a problem based learning (PBL) dental communication curriculum. With this information, we intend to gather the basic data necessary to stress the need for and value of an education in communication regarding dental hygiene. Methods: PBL-based education was provided to a total of 49 third-year dental hygiene students who took the dental communication class taught by the Department of Dental Hygiene at S University during the 2^nd semester of 2020. The relevant self-evaluation was modified, based on the aim of the present study, to refer to three basic key competencies related to the communication capabilities of dental hygienists. An assessment of dental communication competency was conducted by analyzing the changes in self-evaluations before and after completing the course, for each question, using a paired t-test. The statistical significance level was set at p < 0.05. Results: Analysis of core competencies before and after PBL-based dental communication education indicated that all competencies were significantly improved after education (p < 0.01). Conclusion: Dental hygiene students' dental communication skills increased significantly after completing PBL-based dental communication education. Therefore, a PBL-based dental communication curriculum is effective in improving dental communication skills for dental hygiene students.

• The Journal of Korean Academy of Prosthodontics
• /
• v.46 no.2
• /
• pp.148-156
• /
• 2008

Statement of problems: Self-etch adhesives exhibit some clinical benefits such as ease of manipulation and reduced technique-sensitivity. Nevertheless, some concern remains regarding the bonding effectiveness of self-etch adhesives to enamel, in particular when so-called 'mild' self-etch adhesives are employed. This study compared the microtensile bond strengths to ground enamel of the two-step self-etch adhesive Clearfil SE Bond (Kuraray) to the three-step etch-and- rinse adhesive Scotchbond Multi-Purpose (3M ESPE) and the one-step self-etch adhesive iBond (Heraeus Kulzer). Purpose: The purpose of this study was to determine the effect of a preceding phosphoric acid conditioning step on the bonding effectiveness of a two-step self-etch adhesive to ground enamel. Material and methods: The two-step self-etch adhesive Clearfil SE Bond non-etch group, Clearfil SE Bond etch group with prior 35% phosphoric acid etching, and the one-step self-etch adhesive iBond group were used as experimental groups. The three-step etch-and-rinse adhesive Scotchbond Multi-Purpose was used as a control group. The facial surfaces of bovine incisors were divided in four equal parts cruciformly, and randomly distributed into each group. The facial surface of each incisor was ground with 800-grit silicon carbide paper. Each adhesive group was applied according to the manufacturer's instructions to ground enamel, after which the surface was built up using Light-Core (Bisco). After storage in distilled water at $37^{\circ}C$ for 1 week, the restored teeth were sectioned into enamel beams approximately 0.8*0.8mm in cross section using a low speed precision diamond saw (TOPMET Metsaw-LS). After storage in distilled water at $37^{\circ}C$ for 1 month, 3 months, microtensile bond strength evaluations were performed using microspecimens. The microtensile bond strength (MPa) was derived by dividing the imposed force (N) at time of fracture by the bond area ($mm^2$). The mode of failure at the interface was determined with a microscope (Microscope-B nocular, Nikon). The data of microtensile bond strength were statistically analyzed using a one-way ANOVA, followed by Least Significant Difference Post Hoc Test at a significance level of 5%. Results: The mean microtensile bond strength after 1 month of storage showed no statistically significant difference between all adhesive groups (P>0.05). After 3 months of storage, adhesion to ground enamel of iBond was not significantly different from Clearfil SE Bond etch (P>>0.05), while Clearfil SE Bond non-etch and Scotchbond Multi-Purpose demonstrated significantly lower bond strengths (P<0.05), with no significant differences between the two adhesives. Conclusion: In this study the microtensile bond strength to ground enamel of two-step self-etch adhesive Clearfil SE Bond was not significantly different from three-step etch-and-rinse adhesive Scotchbond Multi-Purpose, and prior etching with 35% phosphoric acid significantly increased the bonding effectiveness of Clearfil SE Bond to enamel at 3 months.

• Korean Journal of Culture and Social Issue
• /
• v.26 no.1
• /
• pp.25-45
• /
• 2020

Intentionality judgement in criminal cases is a core area of fact finding that is root of guilty and sentencing judgment on the defendant. However, the third party is not sure the intentionality because it reflects subjective aspect of agent. Thus, mechanism behind intentionality judgment is an important factor to be properly understood by the academia and the criminal justice system. However, previous studies regarding intentionality judgment models have shown inconsistent results. Mental-state models proposed foreseeability(belief) and desire of agent at the time of the offence as key factors in intentionality judgment. These factors consistent with central things on intentionality judgment in criminal law. However, key factors in moral-evaluation models are blameworthiness of agent and badness of outcome reflected on the consequent aspect of act. Recently, deep-self concordance model emerged suggesting important factors on intentionality judgment are not mental states and moral evaluations but individual's deep-self. However, these models are limited in that they do not consider the important features of criminal cases, that the consequence of the case is inevitably negative, and therefore the actor who is a party to legal punishment rarely expresses his or her mental state at the time of the act. Therefore, this study suggests that, based on the existing intentionality judgment studies and the characteristics of the criminal case, the inference about who the agent was originally will play a key role in judging the intentionality in the criminal case. This is the moral-character model. Futhermore, In this regard, this study discussed what the media and criminal justice institutions should keep in mind and the directions for future research.