• 대한치과기공학회지
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• 제32권4호
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• pp.417-433
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• 2010

Purpose: This study evaluated the manpower planning of dental technicians. Methods: Methods : Survey was conducted regarding subject's general characteristics, characteristics of dental technician's occupational view and working conditions, and reason to enter into branches of the public health enter. The survey sample consisted of 323 dental technicians (221 male/ 102 female). Survey was conducted for one month from August 1 to September 1 in 2010. Following results were obtained. Results: 1. Regarding general characteristics of the subjects, there was a slight male predilection with 68.4%. Subjects in their 40s occupied the highest proportion of 32.2%. Majority of subjects worked in the big cities (71.5%). Favored working places were dental laboratory (57.6%) and dental hospital or dental clinic (19.5%). Although no position is available in the public sector such as public health center or health care civil servant, 9.3% preferred working in the public health center. Public sector is more favored than 2-year technical colleges or dental supply and equipment companies. In respect to education, 57% of the subjects graduated college. 67.8% were married. Subjects who specialize in the porcelain or all-ceramic were 57.9%. With regard to current position, head of the dental laboratory was most common. 2. Following occupation characteristics were found. Economic reason took the highest proportion when deciding their occupation (39.9%) followed by gaining social experience (36.5%). Majority of the subjects (76.5%) wanted to work as dental technicians until their retirement. 71.5% pursuit to become a manager of the dental laboratory. 76.1% agreed on opening a dental technician position in the public health center. Regarding an authority to lead developing the dental technician position in the public sector, majority of the subject chose ministry of health and welfare (35.6%) and Korean dental technologist association (34.7%). Employment (average, 30%) and turnover rate (average, 36.5%) of dental technology college graduates ranged from 40% to 60%. Most important factors for the employment were practical experience (41.2%) and competency (34.4%). With regard to job satisfaction, so-so as 46.7% and satisfactory was 42.7% 3. In respect to the reason for opening a position in the public health center, 'It is needed to continue denture rogram for elderly patients' obtained the highest score (4.14 point). 'Institutional devices are required to open a position for dental technicians as a public healthcare provider' received high score (4.11 point). 4. Concerning the working conditions, 'professional knowledge is required' received the highest score (4.23) followed by 'too short maternity and parental leave' (4.21). 5. Relationship between general characteristics of the subjects and favor of working in the public health center was investigated. Significant differences were found according to the current and favored working area, favored occupation, education level, marital status, and specialty. Working in the public health center was favored by following subjects: working in mid- or small-sized cities (4.16 point, p<0.05); PhD degree-holder (4.59 point, p<0.01). 6. Among general characteristics of the subjects, significant difference of working conditions was found in the following factors: gender; working areas; favored working areas; favored working positions, and education level. Majority of subjects favored working in big cities and currently work in big cities although satisfaction was comparatively low (3.75 score). 7. Future plan to work in public health center was evaluated according to occupational characteristics. Subject's intention to work in the public healthcare center was significantly affected by opening of dental technician position, leading authority, average turnover rate, and factors affecting employment. Working in the public health care center was favored by the following subjects: Dental technicians who actively supported opening of the dental technician position (4.34 point, p<0.001); subjects who thought the Korean dental technologist association is responsible for the opening of positions in the public sector (4.26 point, p<0.001); and subjects who thought that attitude and character are important for the employment (p<0.001). 8. Concerning difference of working conditions according to the occupational characteristics, significant difference was demonstrated by factors such as a reason to choose to be a dental technician, work plan, pursuing position, responsible authority, average employment rate, and job satisfaction. High standard of working conditions was required in subjects who selected to be a dental technician for the leisure time after work (s.05 point, p<0.01), who planted to work until their marriage (4.25 point, p<0.001), and who pursuit to be a manager (3.98, p<0.05). 9. In respect to influence of general characteristics on the advancement to public health centers, the coefficient of determination (R2) was 0.068 and age affected the working condition with significant difference according to the pvalue. 10. Regarding influence of general characteristics on the advancement to public health centers, the coefficient of determination (R2) was 0.335 and work plan, opening of dental technician position in the public sector, and responsible authority had significant influence over the subject's intention to work in the public health center according to the p-value. 11. With regard to the influence of general characteristics on the advancement to public health centers, the coefficient of determination (R2) was 0.091 and reason to choose to be a dental technician, work plan, and responsible authority significantly affected subject's working conditions. Conclusion: Korean society is becoming a super-aged society according to several statistics. As aged population is rapidly increasing, national health insurance plans to cover denture for senior citizen over 75 years old from 2012. Therefore, dental technicians are urgently needed in the public health centers all over the nation. Many subjects in this study planed to work until their retirement and recognized dental technician's expertise. Ministry of health and welfare and Korean dental technologist association should co-operate each other to prepare foundation and institutional devices for dental technicians to advance into the public health center. This will improve oral health of the population. This study showed urgency of medical facilities and services which meets increasing number of aged population and welfare of the population.

• 대한소아치과학회지
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• 제28권3호
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• pp.412-420
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• 2001

정상교합아동과 비교적 조기치료가 요구되는 III급 부정교합을 갖는 성장기 아동에서 측모 두부 방사선 계측치의 평균치를 산출하여 진단 및 치료계획 수립에 도움이 되고자 전남대학교병원 소아치과에 내원한 7세에서 9세사이의 III급 부정교합 아동 83명과 안모가 단정하고 정상교합을 갖는 광주지역 초등학생 84명을 대상으로 측모 두부 방사선촬영을 하여 McNamara 분석법을 이용한 계측치를 비교 분석하여 다음과 같은 결론을 얻었다. 1. 남아에서 정상교합자와 III급 부정교합자간의 계측치에서 Effective maxillary length, Maxillomandibular differential, Facial axis, Nasion perp to pogonion, Point A perp to Mx 1, A-Pog line to Mn 1의 항목이 유의성 있는 차이를 나타내었다(p<0.01). 2. 여아에서 정상교합자와 III급 부정교합자간의 계측치에서 Nasion Perp. to Point A(p<0.05), Effective Mandibular length, Effective Maxillary length, Maxillomandibular differential, Mandibular plane angle, Point A perp to Mx 1, A-Pog line to Mn 1의 항목이 유의성 있는 차이를 나타내었다(p<0.01). 3. Effective Mandibular length는 남아에서 정상교합자와 III급 부정교합자간에 차이가 없었으나, 여아에서는 유의한 차이가 있었다(p<0.01). 그러나 Effective Maxillary length는 III급 부정교합자가 남녀 모두에서 정상교합자보다 유의성있게 짧았다(p<0.01). 4. Anterior lower facial height는 남녀 모두 정상교합자와 III급 부정교합자의 비교에서 유의한 차이가 없었다. 5. 남아와 여아의 계측치 비교에서 Anterior lower facial height와 Mandibular plane angle은 정상교합자와 III급 부정 교합자 모두에서 유의한 차이가 있었다(p<0.01).

• 대한영양사협회학술지
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• 제9권4호
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• pp.278-287
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• 2003

This study was performed to investigate nurses’ perception for nutrition education. The subjects of this study were 197 nurses and 94 nursing assistants working at hospitals in the Kyung-nam area. The survey was conducted by using a self-administered questionnaire in November, 2001. The results were as follows : Sixty-seven point seven percent of the subjects were nurse, 32.3% were nursing assistant. Average age of subjects was 26.9 years old, average nursing experience was 5.7 years, and 70.7% of the subjects graduated from a junior college. The average nutrition knowledge score was 14.3$\pm$2.5 out of possible 20 points. Seventy-four point two percent of the subject responded that nutrition education is very necessary for patient, and positive responses in the nurse were higher than that nursing assistant(p<0.001). Only 8.6% of the subjects had nutrition education training. The perceptions about a suitable person for nutrition counseling and nutrition education indicated dietitian(69.3%) and nurse(21.3%). Fifty-two point eight percent of the subjects responded that they would not participate in nutrition education themselves and the main reason for this was that they believed lack of expert knowledge(43.4%), and that such courses should be taught by specialist(40.5%). Forty-eight point eight percent of subjects had nutrition counseling experience for patient, and nurses, married nurses and those over 2 years of nursing careers had significantly higher nutrition counseling experience for patient than nursing assistant, unmarried nurses and those under 2 years of nursing careers(p<0.05-p<0.001)

• 한국재료학회지
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• 제6권6호
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• pp.561-567
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• 1996

The grain size effect on grain boyndary cracking in Pb-Sn eutectic during isothermal fatigue was investigated. Fatigue experiments were confined to two conditions : (1) 0.4% total strain range(approximetely 0.2% plastic strain range), 1.67$\times$10$^{-3}$/s frequency; and (2) 1.5% total strain rante(approximately 1.2% plastic strain range), 8.33$\times$10$^{-4}$/s frequency. Fatigue specimens were cross-sectioned to monitor the depth of crack growth continuosly and then, the maximum crack depths in units of the number of boundaries were plotted as functions of number of cycles for these two different strain ranges. The results revealed that the rate of crack growth(per cycle at fixed rate of crosshead motion) can be expressed as dc/dN=($\Delta$$\varepsilon$$_p$)$^n$c where n is typically 2, c is the crack length, $\Delta$$\varepsilon$$_p$ is the plastic strain range, and A is a "constant" that depends on whether the crack is deeper or shallower than its first triple point of the grain boundary, A decrdases by about a factor of three after the crack hits the first triple point, indecating that the fatigue crack is trapped at the triple point of the grain boundaries.

• 한국전문물리치료학회지
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• 제8권3호
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• pp.43-52
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• 2001

This study was designed to determine the effect of ankle taping and short period of walking on the treadmill on the range of motion (ROM) and proprioception at the ankle joint. Twenty healthy male subjects (mean age=24.2 yr) participated in this study. Goniometry and videotape replaying method were used to measure the ankle ROM. Passive sagittal and frontal plane motions were measured. The difference in degree between the stimulus point and the reproduced point was defined as an angular error. The measurements were performed at four different phases: pre-taping (PRT), post-taping immediately (POT), post-5 minute walking with taping (P5M), and post-10 minute walking with taping (P10M). The ankle of dominant limb was taped by a certified athletic trainer using a closed basket weave technique. Participants walked on the treadmill at 2.5 mph. The results showed that the mean of the sagittal plane motion at PRT, POT, P5M, and P10M was 53.0, 30.5, 36.2, and 40.2 degrees, respectively. The frontal plane motion at PRT, POT, P5M, and P10M was 33.6, 13.9, 15.7, and 18.6 degrees, respectively. The angular error at PRT, POT, P5M, and P10M was 5.5, 1.6, 1.8, and 1.9 degrees, respectively. After 10 minutes of walking, the sagittal plane motion and frontal plane motion was increased by 9.7 and 4.7 degrees compared with POT, respectively. The proprioception was significantly improved after the application of ankle taping. Both the restriction of frontal plane motion and proprioception improvement at the ankle joint may contribute to ankle stability during walking.

• Journal of Biosystems Engineering
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• 제2권1호
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• pp.33-48
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• 1977

Transporting agricultural products and the other material by the two-wheel-tractor (power-tiler)and trailer system may be one of its most widely used farming functions.The safety and hitching load for all the previaling performing conditions may be the general concern over the operation of the tiller-trailer system. In this study, a mathematical model to determine the static and dynamic forces excerting on the hitch point were developed . Based on the analysis of the model and the field measurements. the limiting hitching load and critical slope were analyzed. The results of the study are summarized as follows ; 1) The limit angle of slope land for the safety steering that two-wheel tractor-single axle trailer system was able to transport agricultural products was the direct angle (${\gamma}$) = 8 ; the cross angle$\beta$) 15 ; and it was decreased in accordance with the increase of carrying load ($W_4). 2) The critical velocity for safe operation in case of running on downward hill road was about 1.08m/sec. 3) The limiting carrying load for the safe steering was W$_4$=600kg. The degree of the safe steering for different braking methods was given in order as follows ; Simulataneous braking the tractor and trailer , braking the trailer only, and braking tractor only. 4) Among the three components of impact loads excerting on the hitch point, the component in the lateral direction ($P_{Vy}$) was near zero in spite of increase of hitching load ($W_4) , while the components in the other two mutually perpedicular directions ($P_{Vx}$ and ($P_{Vz}$) ) had larger values in horizontal plane than those in the slope lands. 5) Moment of forces on the lateral direction (M$y$) had the largest value among the three components of impact moment acting on the hitch point, however all the components were sharply increased in accordance with the increase of hitching loads ($W_4. Three components of the moment were the negative values.

• 한국게임학회 논문지
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• 제11권2호
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• pp.81-91
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• 2011

온라인 게임 산업의 성장과 함께 해킹 툴의 사용은 날로 증가하고 있다. 해킹 툴은 프로그래밍 지식이 없는 유저들이 해킹과 동일한 기능을 사용할 수 있도록 해주기 때문에 온라인 게임서비스에 있어 많은 문제점을 야기한다. 특히, P2P 네트워크 기반의 FPS 게임은 해킹에 대한 취약성을 가지고 있다. 본 논문은 인도네시아 Point Blank의 사례를 통해 FPS 게임의 치팅 유형을 분석하고, 게임 업체들이 해킹에 대한 효과적인 대처 능력을 갖출 수 있도록 대응방안의 우선순위를 제시하였다.

• 수산해양교육연구
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• 제28권2호
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• pp.515-524
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• 2016

The purpose of this study was to identify how safety awareness and self-efficacy affect the safety practice with elementary school students. The participants were 369 elementary school students(4~6th grade) in Changwon city. Data were collected using self-report questionnaires and analyzed with the SPSSWIN 22.0 program. Analysis methods were t-test, one way ANOVA, Scheffe test, Pearsons correlation coefficient and multiple linear regression. As a results, safety awareness was an average 2.97 point which was moderate levels and self-efficacy was on over intermediate level of an average 3.73 point. Safety practice was an 3.00 point. Safety practice had statistically significant difference according to grade, number of family, mother's education, character and school life attitude. Safety awareness(r=.41, p<.001) and self-efficacy(r=.39, p<.001) was significant correlation with safety practice. Fire safety(${\beta}=.22$, t=3.56) and self-efficacy(${\beta}=.27$, t=5.32) were significantly influenced safety practice and explaining 24.0% of the variance. From the results of this study, I proposed the education programs to increase safety practice in elementary school students that emphasizes self-efficacy and safety awareness.

• 한국병원경영학회지
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• 제22권2호
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• pp.28-43
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• 2017

The purpose of this study was to investigate the influence of professional self-concept and interpersonal relations on nursing competence of clinical nurses. This study was conducted as a descriptive cross sectional survey with 182 nurses who work at a tertiary hospital which has over 1,000 beds, located in Gyeounggi - do. The data was collected from October 11th, 2016 to October 28th, 2016. The main findings of this study were as follows. The mean score for professional self-concept was $2.65{\pm}0.29$ points in the range of 1 point to 4 points. And interpersonal relations was an average of $3.55{\pm}0.35$ points in the range of 1 point to 5 points. Nursing competence was an average of $2.65{\pm}0.39$ points in the range of 1 point to 4 points. Professional self-concept and interpersonal relations were positively correlated with nursing competence. Nursing competence was differed from clinical career(F=10.518, p<.001), working unit(F=4.139, p=.018), educational background(F=6.542, p=.002), and satisfaction on nursing(F=6.326, p<.001). The regression model with clinical career, working unit, educational background, satisfaction on nursing, 3 sub domain of professional self-concept(professional practice, satisfaction, communication), and interpersonal relation was statistically significant (F=31.94, p<.001). And this model could explain 51.5% of nursing competency(Adj R2=.515). Especially, professional practice(${\beta}=.532$, p<.001) of professional self-concept, interpersonal relations(${\beta}=.223$, p<.001), clinical career(${\beta}=.169$, p<.001), working unit: ICU (${\beta}=.169$, p<.05) were identified the factors influencing on nursing competence. Therefore, improving clinical nurses' nursing competence can be achieved with broad approach that includes improvements in professional self-concept and interpersonal relations. And also, working unit, and clinical career should be considered to develop the actual program for nursing competence, too.

• Journal of Korean Neurosurgical Society
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• 제50권4호
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• pp.341-347
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• 2011

Objective : The purpose of this retrospective study was to evaluate the efficacy and safety of atlantoaxial stabilization using a new entry point for C2 pedicle screw fixation. Methods : Data were collected from 44 patients undergoing posterior C1 lateral mass screw and C2 screw fixation. The 20 cases were approached by the Harms entry point, 21 by the inferolateral point, and three by pars screw. The new inferolateral entry point of the C2 pedicle was located about 3-5 mm medial to the lateral border of the C2 lateral mass and 5-7 mm superior to the inferior border of the C2-3 facet joint. The screw was inserted at an angle $30^{\circ}$ to $45^{\circ}$ toward the midline in the transverse plane and $40^{\circ}$ to $50^{\circ}$ cephalad in the sagittal plane. Patients received followed-up with clinical examinations, radiographs and/or CT scans. Results : There were 28 males and 16 females. No neurological deterioration or vertebral artery injuries were observed. Five cases showed malpositioned screws (2.84%), with four of the screws showing cortical breaches of the transverse foramen. There were no clinical consequences for these five patients. One screw in the C1 lateral mass had a medial cortical breach. None of the screws were malpositioned in patients treated using the new entry point. There was a significant relationship between two group (p=0.036). Conclusion : Posterior C1-2 screw fixation can be performed safely using the new inferolateral entry point for C2 pedicle screw fixation for the treatment of high cervical lesions.