• Journal of the Korea institute for structural maintenance and inspection
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• v.21 no.5
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• pp.49-55
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• 2017

In the seventies, a number of researchers carried out experiments on pullout tests with prototype equipment, and the pullout test was certified as a reliable nondestructive testing(NDT) method for determining the strength of concrete. To estimate the strength of high-strength concrete, we propose a simplified pullout test that uses as a break-off bolt a standard 10mm bolt with a groove on the shaft, an insert nut, and a pullout instrument that includes a hydraulic oil pump without a load cell. To verify the advantages of the simplified pullout test(low cost, simplicity, and convenience), four wall specimens were tested with two levels of concrete strength, 30 MPa and 50 MPa, using a simplified pullout tester with a load cell. The pullout load and concrete compressive strength were measured every day until day 7, day 14, day 21 and day 28. It was found that the pullout load was very similar to the compressive strength. Therefore, we have verified that a simplified pullout test can be used to evaluate the in-place strength of high-strength concrete in structures. The prediction equation of the groove diameter of the break-off bolt(y) with the concrete strength(x) was derived as y=0.05x+3.79, with a coefficient of determination of 0.88 found through regression analysis.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 1999.11a
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• pp.127-133
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• 1999

본 논문의 연구내용은 동양의 사상중의 하나인 음양오행의 오행속성을 물리적으로 해석하여 사람의 오장육부의 크기에 따른 체질 분류에 기초하여 수행하였다. 이러한 체질분류에 의하여 생리적 증상, 걸리기 쉬운 질병, 그리고 성격상의 특징과 장단점을 파악 할 수 있었다. 이러한 일련의 연구에 대한 본 실험실의 지속적인 연구 작업의 하나로 MMPI (Minnesota Multiphasic Personality Inventory)로 일컬어지는 미네소타 다면적 인성검사 설문문항에 대한 음양오행적 분석을 시도하였다. 대표적인 분류의 예를 들면 간이 큰 사람이 건강이 좋지 않을 때 나타날 수 있는 대표적인 심리적 증상으로는 욕설을 잘하며, 심장이 약하여지면 상사병에 걸릴 가능성이 커지며, 폐와 대장이 나빠진 사람은 울기를 잘하며, 그리고 위장이 나빠진 사람은 공상을 잘 하고, 신장방광이 나빠지면 겁이 많아지고 생명력을 나타나는 심포삼초의 기능이 떨어지면 불안하고 초조하여지는 심리적 성격과 연결되는 것이다. 이러한 방법으로 분석하였을 때 건강, 성격, 습관 등에 관련된 MMPI 566문항 중 많은 부분에 대하여 흥미롭고, 성공적인 분석을 내릴 수 있었다.

• The Journal of the Korea Contents Association
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• v.9 no.11
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• pp.297-308
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• 2009

The purpose of this study is to explore the relationship between job stress and mental health of caretakers by SCL-90-R. This study are to offer basic information for patients the quality of service interventions. The sample for the study consisted of 247 caretakers who work in Busan. The results of this study are as follows: 1) Caretakers' mental health and job stress was not serious level. 2) There was an important factor in job stress, which was suitable pay. 3) Caretakers' job stress was positively related to mental health. There is a statistical correlation between the relationship with mental health and job stress. 4) Caretakers' mental health was affected by job stress level. Therefore, We need training and program that focuses on management job stress in caretakers.

• Journal of Korean society of Dental Hygiene
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• v.12 no.1
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• pp.37-46
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• 2012

Objectives : This research was investigated to evaluate the psychological characteristics and changes of psychological state among dental orthodontic patients. Methods : This cross-sectional questionnaire research was conducted with 230 dental orthodontic patients in Busan from December 23, 2009 to March 6, 2010. The psychological analysis of dental orthodontic treatment patients was performed with Symptom checklist-90-revision(SCL-90-R) considering 5 general characteristics and 2 treatment period related characteristics. Estimated psychological results were changed T-score. Data analysis was performed with descriptive analysis, t-test and ANOVA using SAS(ver 9.1) program. Results : The levels of T-score of SCL-90-R were $43.88{\pm}7.50$ in hostility(HOS), $43.38{\pm}4.64$ in phobic anxiety(PHOB), $43.20{\pm}6.24$ in somatization(SOM), $42.13{\pm}6.71$ in paranoid ideation(PAR), $41.39{\pm}8.16$ in interpersonal sensitive(I-S), $41.01{\pm}7.90$ in obsessive-compulsive(O-C), $40.96{\pm}5.37$ in psychoticism(PSY), $40.96{\pm}5.19$ in anxiety(ANX) and $39.81{\pm}6.80$ in depression(DEP), respectively. The T-score of phobic anxiety in before treatment group was higher than that of treatment groups. The T-score of interpersonal sensitive and paranoid ideation in over 36 months treatment period group were higher than that of other treatment period groups. Conclusions : Phobic anxiety(PHOB), interpersonal sensitive(I-S) and paranoid ideation(PAR) were affected in pre-treatment and long-term treatment dental orthodontic patients. Psychological management methods considering treatment period are needed to improve mental health of dental orthodontic patients.

• Korean Journal of Head & Neck Oncology
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• v.25 no.2
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• pp.150-152
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• 2009

혈관근육지방종은 지방, 평활근, 두꺼운 벽의 혈관이 다양한 비율로 구성된 흔하지 않은 과오종이며, 이는 결정 경화증을 동반하거나 산발적으로 발생한다. 저자들은 혈관근육지방종이 드물게 발생하는 두경부에서 발생한 귓바퀴 1예, 구개점막 2예의 혈관근육지방종을 보고하고자 한다. 병리소견상, 3예 모두에서 성숙지방조직, 불규칙한 혈관, 그리고 HMB-45와 Melan-A에 음성을 보이는 평활근육세포로 이루어진 조직소견을 보였으며, 여러군데에서 림프구 침윤이 3예 모두에서 관찰되었다. 점막피부 혈관근육지방종으로 진단하였다. 세증례 모두 결절경화증은 동반되지 않았다. 점막피부 혈관근육지방종에서는 혈관주변세포가 HMB-45와 Melan-A에서 음성을 보였으며, 이는 간이나 신장의 혈관근육지방종에서의 특징적인 양성반응과는 다른 점이었다. 간이나 신장에서 생긴 혈관근육지방종과 다른 임상병리적 특징을 비교 기술하고자 두경부에서 발생한 점막피부 혈관근육지방종 3예를 보고한다.

• Journal of Biomedical Engineering Research
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• v.25 no.1
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• pp.77-82
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• 2004

The purpose of this study is to establish a reference for image acquisition for completion of a standard brain for diverse Korean population, and to develop a management system that saves and manage database of the acquired brain image and personal information of those who were tested. 3D MP-RAGE technique, which has excellent SNR and CNR and reduces the times for image acquisition, was selected for anatomical Image acquisition, and parameter values were obtained for the optimal image acquisition. The database management system was devised to obtain not only anatomical image data but also subjects' basic demographic factors, medical history, handedness inventory state-trait anxiety inventory, A-type personality inventory, self-assessment depression inventory questionnaires of Sasang Constitution Mini-Mental State Examination, intelligence test, and personality test via a survey questionnaire and to save and manage the results of the tests. In addition, this system was designed to have functions of saving, inserting, deleting, searching, and Printing of image da a and personal information of subjects, and to have accessibility to them as well as automatic connection setup with ODBC. This newly developed system may have major contribution to the completion of a standard brain of diverse Korean population in that it can save and manage their image date and personal information.

• Korean Journal of Agricultural Science
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• v.21 no.1
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• pp.28-36
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• 1994

Studies on the food-safety of pheasant and mallard, which belong to wild fowl as new meat resources. were carried out. The results were summarized as follows : 1. Food poisoning bacteria including Salmonella spp, was not detected from the inspections of small intestine, cecum, and rectum. 2. Parasite inspection tests on blood, feces, digestive organ, and thoracic organs were negative. 3. Antibiotic residues from the carcass muscle by simplified disk methods were not detected. 4. Seven different pesticide residue tests, such as DDT and BHT, on the muscle and liver were negative. 5. Four different kinds of toxic heavy metals such as Cd were much lower than the permissible concentration. Studies on the food safety tests and inspections from the pheasant and mallard were revealed that from taking this new food resources, the toxicities would be very low for the human health by the direct influences.

• Journal of Oral Medicine and Pain
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• v.30 no.4
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• pp.433-446
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• 2005

The purpose of this study was to investigate the sociopsychological factors which might influence the course of the temporomandibular disorders and to develop models for prediction of treatment outcome related to pain, dysfunction and sound. For this study, 268 patients with temporomandibular disorders were selected from the patients presented to department of Oral Medicine, Wonkwang university dental hospital. Chief complaints of these subjects were largely grouped into three categories such as pain, dysfunction and sound, and 10 cm visual analogue scale(VAS) was used to record the state of the three complaints every visit and Treatment Index(VAS TI) was calculated from VAS. All the forty-two items obtained from clinical examination or questionnaire were statistically processed with $SPSS^{(R)}$ windows. The results of this study were as follows: 1. The items showed a difference between male and female subjects were maximum mouth opening, palpation score, jaw jerk during mandibular movement, and sleep disturbance. Among questionnaires such as SRRS, HAD scale and PSQI, the HAD scales showed the most highly significant correlation with the each scale item of the SCL-90R. 2. Among the groups classified by VAS TI, the group with the lowest VAS TI showed the highest VAS score in the start of treatment but showed the lowest score in the end of treatment, without respect to the type of chief complaint. From these results, it is assumed that the active treatment duration for the subjects with lower VAS score in the first visit would be longer than the subjects with higher score with the somewhat poor treatment outcome. 3. With regard to all the three complaints, the items showing significant effect in the model for prediction of treatment outcome were from questionnaire, except one item, maximum mouth opening, which suggest that the sociopsychological factors would be strongly related to development and progress of the symptoms.

• Journal of the korean academy of Pediatric Dentistry
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• v.46 no.4
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• pp.369-381
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• 2019

The aim of this study was to analyze the changes and improvements in symptoms of sleep-disordered breathing (SDB) using semi-rapid maxillary expansion (SRME) in children with narrow maxilla and SDB symptoms. Subjects were 15 patients with sleep disorder (apnea-hypopnea index, AHI ≥ 1) and narrow maxillary arch between 7 and 9 years of age. Before the SRME was applied, all subjects underwent pediatric sleep questionnaires (PSQ), lateral cephalometry, and portable sleep monitoring before expansion (T0). All subjects were treated with SRME for 2 months, followed by maintenance for the next 3 months. All subjects had undergone PSQ, lateral cephalometry, and portable sleep monitoring after expansion (T1). Adenoidal-nasopharyngeal ratio (ANR), upper airway width and hyoid bone position were measured by lateral cephalometry. The data before and after SRME were statistically analyzed with frequency analysis and Wilcoxon signed rank test. As reported by PSQ, the total PSQ scale was declined significantly from 0.45 (T0) to 0.18 (T1) (p = 0.001). Particularly, snoring, breathing, and inattention hyperactivity were significantly improved (p = 0.001). ANR significantly decreased from 0.63 (T0) to 0.51 (T1) (p = 0.003). After maxillary expansion, only palatopharyngeal airway width was significantly increased (p = 0.035). There was no statistically significant difference in position of hyoid bone after expansion (p = 0.333). From analysis of portable sleep monitoring, changes in sleep characteristics showed a statistically significant decrease in AHI and ODI, and the lowest oxygen desaturation was significantly increased after SRME (p = 0.001, 0.004, 0.023). In conclusion, early diagnosis with questionnaires and portable sleep monitoring is important. Treatment using SRME will improve breathing of children with SDB.

• Therapeutic Science for Rehabilitation
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• v.11 no.2
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• pp.53-62
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• 2022

Objective : This study aimed to present basic data that could help in selecting or using evaluation tools in clinical settings. Methods : This study included 51 patients with stroke. The Cognitive Impairment Screening Test (CIST), Korean-Mini Mental State Examination, 2nd Edition (K-MMSE~2), and Clinical Dementia Rating (CDR) were used as evaluation tools. The correlation between evaluation tool scores was analyzed using Spearman's rank correlation coefficient, and the comparison of total scores between the CIST and K-MMSE~2 according to global CDR scores was analyzed using the Wilcoxon signed-rank test. Results : The correlation between the total CIST and K-MMSE~2 scores and global CDR scores was statistically significant (p<.01). The correlation between the sub-scores of the CIST and K-MMSE~2 showed a statistically significant correlation for all sub-scores (p<.01). The comparison of total scores between the CIST and K-MMSE~2 according to global CDR scores showed no statistically significant differences in all global CDR scores. Conclusion : This study showed that there was a correlation between CIST, K-MMSE~2, and CDR in patients with stroke. In the future, we hope that the results of this study will help to select or use cognitive function evaluation tools in clinical settings.