• Journal of Periodontal and Implant Science
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• v.53 no.3
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• pp.173-183
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• 2023

Purpose: Treatment for periodontitis has evolved over the years as new technologies have become available. Currently, lasers seem attractive as a treatment modality, but their effectiveness needs to be verified. The purpose of this project was to evaluate Laser Assisted New Attachment Procedure^® (LANAP^®) surgery as a single treatment modality. Methods: As part of a mandatory training program for periodontists and other dentists, 22 consecutive patients diagnosed with moderate to severe periodontitis (probing depth [PD] up to 11 mm) were treated with the LANAP^® surgical approach using a 1064-nm Nd:YAG laser as part of a multi-step protocol. Following single-session active therapy, they were entered into a maintenance program. Their clinical status was re-evaluated at 12-18 months following surgery. Results: All 22 patients completed the 12- to 18-month follow-up. PD, clinical attachment level, and furcation (FURC) showed substantial improvement. Recession was minimal (mean, 0.1 mm), while 93.5% of PD measurements were 3 mm or less at re-evaluation. Furthermore, 40% of grade 2 FURC closed clinically. Conclusions: Within the limits of this case series, LANAP^® was found to be an effective, minimally invasive, laser surgical therapy for moderate to advanced periodontitis.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.7
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• pp.245-251
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• 2018

This study was conducted to investigate the status of the installation, maintenance and management of automatic external defibrillators (AEDs) in all mandatory institutions and buildings of the providence to be equipped with AEDs. The study was conducted from November 20, 2017 to December 20, 2017, during which time 169 AED units were surveyed. The collected data was analyzed by frequency analysis and the percentage was determined using the SPSS/WIN 20.0 program. A total of 168 units (99.41%) of AEDs were installed inside. Additionally, 47 units (27.80%) were available 24 hours a day, and 44 units (26.00%) were available outside business hours of the institution. Moreover, 87 units (51.43%) of the responsible managers received rescue and first aid training. Evaluation of the management status of the AEDs revealed two (1.20%) that had problems with their battery state of charge battery charge and seven (4.10%) for which the AED pads were past the expiration date. A management system for the manager of AEDs should be established and a regular training program for their systematic maintenance should be developed and applied. It is also suggested that awareness of the necessity of continuous management be raised through reinforcement of laws and legal system reorganization.

• Korean Chemical Engineering Research
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• v.60 no.3
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• pp.334-346
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• 2022

There is a lack of knowledge and information on the understanding and application of the Process Safety Management (PSM) system, recognized as a major cause of industrial accidents in small-and medium-sized workplaces. Hence, it is necessary to prepare a protocol to secure the practical and continuous levels of implementation for PSM and eliminate human errors through tracking management. However, insufficient research has been conducted on this. Therefore, this study investigated and analyzed the various violations in the administrative measures, based on the regulations announced by the Ministry of Employment and Labor, in approximately 200 small-and medium-sized PSM workplaces with fewer than 300 employees across in korea. This study intended to contribute to the prevention of major industrial accidents by developing a facility maintenance web program that removed human errors in small-and medium-sized workplaces. The major results are summarized as follows. First, It accessed the web via a QR code on a smart device to check the equipment's specification search function, cause of failure, and photos for the convenience of accessing the program, which made it possible to make requests for the it inspection and maintenance in real time. Second, it linked the identification of the targets to be changed, risk assessment, worker training, and pre-operation inspection with the program, which allowed the administrator to track all the procedures from start to finish. Third, it made it possible to predict the life of the equipment and verify its reliability based on the data accumulated through the registration of the pictures for improvements, repairs, time required, cost, etc. after the work was completed. It is suggested that these research results will be helpful in the practical and systematic operation of small-and medium-sized PSM workplaces. In addition, it can be utilized in a useful manner for the development and dissemination of a facility maintenance web program when establishing future smart factories in small-and medium-sized PSM workplaces under the direction of the government.

• Journal of Convergence for Information Technology
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• v.11 no.7
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• pp.288-297
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• 2021

The purpose of this study was to provide basic data for the development of end-of-life care program by analyzing the importance and performance of end-of-life care. Data were collected from 127 hospice team members currently working in hospice and palliative care units from six different university hospitals, general hospitals and hospice clinics. The data was collected throughout the time span of Dec. 1, 2020 to Feb. 15, 2021. Data were analyzed using descriptive statistics, t-tests, ANOVA, & IPA matrix. As a result of this study, 'physical care' and 'psychological care' were part of the first quadrant that requires maintenance and continuous enhancement. The 'spiritual care' appeared to be in the third quadrant area which entails long-term improvement. Based on the outcome of the study, it is evident that strategies are needed to continuously maintain and enhance physical and psychological care as well establish long-term plans for spiritual care when organizing the hospice team's end-of-life care performance training program.

• Journal of Technologic Dentistry
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• v.28 no.1
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• pp.83-102
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• 2006

The purpose of this study is to understand the present conditions and problems of the joint education between industry and the academic world in the field of dental technology which were identified by the department of dental technology with the related industries and to meet their expectations for the cooperative education. The results of this study will be able to be furnished as basic data in deciding the direction of policy toward skillful dental technicians with a view to improving job employment rate of college graduates. The questionnaires for data were done by the dental technicians working in Daegu City and Kyeongbuk Province and students studying at the department of dental technology, Daegu Health College. The questionnaires of this study were processed by SPSS program. We could confirm through the investigation that on-the-job training as one of the joint policies between industry and the academic world is closely related to all the college education and that the results of on-the-job training can be expected under the close cooperation and the complementary relationship between industry and the academic world. Therefore, this study indicates the directions of policy toward skillful technicians through the cooperation between industry and the academic world as follows : 1. The cooperative systems among industry, academic world, and government are needed for the improvement of efficient job employment rate. The continuous training programs are needed to be built up for the maintenance and development of the technicians'specialty after employment. 2. The all-in-one educational programs both education and employment are needed for the on-the-job training through the cooperation between industry and the academic world, and the activation of the organizations which fully operate them is also needed. That's because the sufficient on-the-job training as one of the joint policies between industry and the academic world and the education of the whole man and the improvement of sociality for the expectant graduates in the academic world can be the methods which reduce the jobless rate and the job-change rate.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.39 no.3
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• pp.100-108
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• 2016

The purpose of this study is to present a business strategy plan to increase organizational effectiveness of small and medium-sized enterprises. The research investigated in the level of human resource activity, such as recruitment, education, evaluation, compensation and development for the employees and executives who are working at small and medium-sized enterprises where located in Busan and Gyongnam province. With this, the research carried out actual proof analysis on the level of human resource activity effects on organization effectiveness like job satisfaction and organizational commitment. The following implications can be acquired from the result of multiple regression analysis on the 201 employees of small and medium enterprises. First, small and medium-sized enterprises should carry out human resource management activities and improve research and development capacity to enhance organization effectiveness. Second, in order to improve job satisfaction of the members of small and medium-sized enterprises, the management should concentrate on recruitment activity and reward maintenance management activity and come up with strategies to enhance learning ability and external network ability. Third, in order to enhance organizational commitment of the members of small and medium-sized enterprises, recruitment activity, training activity, and reward maintenance management activity should be carried out and the management should come up with strategies to enhance learning ability and external network ability. In this research, the objective was only to find out antecedents of organization effectiveness, but considering that causality might arise among the antecedents, in the studies hereafter, the verification on the structural relationship of various factors will be needed.

• Journal of the Korea institute for structural maintenance and inspection
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• v.16 no.2
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• pp.87-94
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• 2012

A damage estimation method of wind turbine tower using natural frequency and mode shape is presented for effective condition monitoring. Dynamic analysis for a wind turbine was carried out to obtain the response of tower from which modal properties were identified. A neural network was learned based on training patterns generated by the changes of natural frequency and mode shape due to various damages. The changes of modal property were calculated using a program for modal parameter estimation. Damage locations and severities could be successfully estimated for 10 damage cases including multi-damage cases using the trained neural network. The damage severities for very small damages generally tends to be slightly under-estimated however, the identified damage locations agreed reasonably well with the accurate locations. Enhancement of the estimation result for very small damage and verification of the proposed method through experiment will be carried out by further study.

• The Journal of the Korea Contents Association
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• v.15 no.9
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• pp.403-410
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• 2015

Since 1970, MRI has greatly been developing in terms of strength of magnetic field, the number of receipt channels, and short time of examination. With the development of digital systems and wireless network, hospitals have also acquired, saved, and managed digital images taken by various kinds of medical imaging equipment. However, domestic universities fail to provide practice training course independently thanks to expensive practice equipment and high maintenance cost, and rely on clinical training. Therefore, this study developed a MR patient diagnosis program based on Windows PC to help out students before their working in clinical filed. The designed Relational Database of MRI Simulator is made up of seven tables according to functions and data characteristics. Regarding the designed patient information, each stepwise function was classified by the patient registration method in clinical field. In addition, on the assumption of the basic information for diagnosis, each setting and content were classified. The menu by execution step was arrayed on the left side for easy view. For patient registration, a patient's name, gender, unique ID, birth date, weight, and other types of basic information were entered, and the patient's posture and diagnosis direction were set up. In addition, the body regions for diagnosis and Pulse Sequence were listed for selection. Also, Protocol name and other additional factors were allowed to be entered. The final window was designed to check diagnosis images, patient information, and diagnosis conditions. By learning how to enter patient information and change diagnosis conditions in this program, users will be able to understand more theories and terms learned in practice and thereby to shorten their learning time in actual clinical work.

• Journal of Korean society of Dental Hygiene
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• v.19 no.6
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• pp.993-1001
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• 2019

Objectives: The purpose of this study was to investigate the effects of dental hygienists' recognition of sponsorship on their organizational attachment and turnover and to improve their attachment affinity according to the working environment. Methods: Dental hygienists working at dental clinics distributed 220 questionnaires from the date of approval to October 31, 2019, at the dental hygienist maintenance training site and online. Data were analyzed using the IBM SPSS Statistics 20.0 program with a significance level of 0.05. Results: Dental hygienists' perception of sponsorship, organizational attachment, and turnover intention were 2.97, 2.86, and 3.43, respectively. The turnover intention was higher when participants were unmarried, had high work intensity, a clinical career of 4-6 years, low organizational attachment, and a 53.7% explanation. Conclusions: To reduce the turnover intention, it is necessary to make appropriate compensations according to the long-term root of the experienced person, to adjust the work intensity, and to make efforts to increase the workers' attachment so that workers and organizations have the same values.

• Research in Community and Public Health Nursing
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• v.24 no.2
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• pp.205-213
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• 2013

Purpose: The purpose of this study is to investigate the effects of visiting laughter therapy on depression and insomnia in the vulnerable elderly. Methods: A quasi-experimental nonequivalent control group pretest-posttest design was used for this study. The participants were 87 elderly who were registered in the Tailored Visiting Health Program of public health centers. Data were collected from September to November 2010. The experimental group received visiting laughter therapy froma visiting nurse who had taken laughter training provided by laughter therapy experts. The experimental group received 10~15 min of laughter therapy once a week for 8 weeks. The instruments included Geriatric Depression Scale and Insomnia Severity Index to measure depression and sleep problems before and after the laughter therapy. Results: The results showed that visiting laughter therapy was effective in decreasing depression and insomnia among the vulnerable elderly. Conclusion: These findings indicate that laughter therapy may be an effective nursing intervention to improve depression and insomnia Further studies would be needed to identify the difference of effects according to time, interval, or period of visiting laughter therapy and to evaluate the lasting effect of visiting laughter therapy.