• Nutrition Research and Practice
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• 제1권4호
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• pp.313-320
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• 2007

This study sought to compare intake levels of major dish items and food groups between normal and obese Korean children in order to understand obesity-related eating behaviors. The study was also conducted to apply the information on the differences in major dish items and food groups found in this study to development of a brief food frequency questionnaire (FFQ) for children's obesity-related eating behaviors. Finally, the developed FFQ was evaluated for reliability. A total of 290, 24-hour dietary recall data from 9-11 year-old normal or obese participants in the 2001 Korean National Health and Nutrition Examination Survey (KNHANES) were reviewed to identity dish items and food groups showing outstanding differences between the normal and obese groups. Based on the level of intake amount between the two groups, a total of 7 items, including ddeokbokggi, spaghetti, ham roast, pork cutlet, dairy products & ices, kimchi, and fruits, were selected to be included in the FFQ. The former 5 items were seen to be consumed more in the obese group, while the latter 2 items were so in the normal group. The questionnaire was formatted into a frequency response section of a seven-category option and reference period of the last 7 days. Test-retest reliability of the developed FFQ was examined by administering it to 153, 9-11 year-old children at a public elementary school in Seoul twice at a month interval. The level of reliability was found to be reasonably high. In conclusion, this study suggests that high consumption of several high-calorie dish items and low consumption of kimchi and fruits may be important eating behaviors in relation to obesity risk among 9-11 year-old children who need nutrition educators' attention. The current study also implies that a simple FFQ can be utilized to reliably assess 9-11 year-old children's diets.

• 대한치과교정학회지
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• 제16권2호
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• pp.53-67
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• 1986

The physical tooth movement by orthodontic force is based upon alveolar bone resorption at compression site and new bone formation at tension site of the alveolar socket. The function of the cyclic AMP is to participate not only in initial action of bone cells by mechanical forces but also in the continuous cellular response leading to bone remodelling. This experiment was performed to clarify the role of cyclic AMP in bone remodelling by mechanical force in the NORMAL group, the DIABETES group and the INSULIN TREATED group. The 72 rats were divided into the NORMAL group, the DIABETES group and the INSULIN TREATED group. The same orthodontic forces were applied to the rats of 3 groups. These rats were treated for periods of time ranging from 1 hour, 1 day, 7 days, 14 days, 21 days and 28 days. The samples of alveolar bones were obtained from compression and tension sites surrounding the tipping teeth from NORMAL, DIABETE and INSULIN TREATED rats. The samples were assayed for cyclic AMP by the cyclic AMP RIA kit. The results were as follows: 1. The cyclic AMP levels of alveolar bone in compression and tension sites showed initial decrease, then increased and .remained elevated by the time consuming. 2. The highest cyclic AMP level showed in the DIABETES group and the lowest level was in the NORMAL group. 3. The cyclic AMP levels in the INSULIN TREATED group was similar with the NORMAL group in control and tension sites, but in the compression sites it was similar with the DIABETES group.

• 대한핵의학회지
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• 제12권2호
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• pp.7-16
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• 1978

To elucidate the depaminergic control of T.S.H. secretion, we analized the pattern of T.S.H. secretion in seven normal controls and nine primary hypothyroid subjects, before and after single or combined administration of specific dopaminergic,receptor blocker, metoclopramide, and specific depaminergic receptor stimulant, bromergocryptine(CB-154). The results obtained were as follows: 1) There was a significant rise in T.S.H. levels after intra venous injection of metocloramide (10mg) in hypothyroid subjects. But there was no significant rise in T.S.H. levels in normal controls. The T.S.H. response to metoclopramide varied considerably, being large in mild cases and small in severely hypothyroid subjects. 2) There was a significant fall in T.S.H. levels after oral administration of bromergocryptine (2mg) in hypothyroid subjects, but there was no significant fall in T.S.H. levels in normal controls. 3) There was no significant fluctuation in T.S.H. levels after combined administration of both metoclopramide and bromergocrytine. 4) There was no significant fluctuation in T.S.H. levels after intravenous injection of normal saline(2ml) in both hypothyroid and normal subjects. 5) There was no significant change in serum $T_3\;and\;T_4$ after administration of metoclopramide and and bromergocryptine respectively and serially. These data support the fact that there is a dopaminergic control in the secretion of T.S.H. in the human.

• 대한영양사협회학술지
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• 제26권1호
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• pp.54-75
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• 2020

This study examined the job satisfaction of nutritionists, and its effect on organizational commitment and turnover intention in public health centers. The response data of 174 nutritionists were analyzed. The overall average of job satisfaction was 3.94 out of 7 points, which was determined to be below 'normal'; however, the job suitability of sub-factors scored 5.26, which was more than 'normal'. The variables affecting job satisfaction that were provided by the respondents included job-related licenses (P<0.01) and co-nutritionists (P<0.01). Organizational commitment ranked 'normal' with a score of 4.35. Normative commitment (4.90) of the sub-factors was 'normal' or more, and differed when considering 'age' (P<0.01), 'employment status' (P<0.01), 'salary per year' (P<0.05), and 'working area' (P<0.05). The turnover intention was analyzed to be below 'normal' with 3.88 points, and the variables affecting turnover were significantly higher for subjects in their 20s (P<0.01), less than two job-related licenses (P<0.05), and less than two co-nutritionists (P<0.01). The four variables of job satisfaction, 'business discretion' (P<0.05), 'work environment' (P<0.01), 'job suitability' (P<0.01), and 'reward' (P<0.01), positively affected the organizational commitment. Moreover, organizational commitment had a mediating effect (P<0.01) on job satisfaction and turnover intention. Taken together, our results suggest that public health centers need to develop improvement plans for business discretion, work environment, job suitability and reward.

• 한국임상수의학회지
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• 제27권1호
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• pp.66-70
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• 2010

Reference interval is critical for interpreting laboratory results, monitoring response to therapy and predicting the prognosis of the patients in clinical settings. The aim of the present study was to update established reference intervals for routine hematologic and serum chemistry values for a population of clinically healthy dogs (range, 1-8 years) seen in an animal hospital. Blood was obtained by venipuncture while animals were physically restrained, and samples were analyzed for 9 chemistries on MS9-5H (Melot Schloesing Lab, France) and 6 hematology on Vet Test 8008 (IDEXX, USA). Data from 105 dogs (52 males and 53 females) for hematology and 113 dogs (37 males and 76 females) for chemistry were used to determine reference intervals using the parametric, nonparametric and bootstrap methods. Prior to analysis, all parameters were tested for normal distribution using Anderson-Darling criterion. Of the 9 biochemical analytes, alkaline phosphatase, alanine aminotransferase, aspartate aminotransferase, creatinine, total protein, and glucose concentrations did not fit normal distribution for both original and transformed data. All but eosinophil count satisfied normal distribution for either original or transformed data. Parametric method can be used for original cholesterol concentrations, RBC, WBC, and neutrophil counts. This technique can also be used for power-transformed values of blood urea nitrogen concentrations and for logarithm of lymphocyte and monocyte counts. Non-parametric or bootstrap method was the preferred choice for the remaining 7 biochemical parameters and eosinophil count as they did not follow normal distributions. All three statistical techniques performed in similar reference intervals. When establishing reference intervals for clinical laboratory data, it is essential to assess the distribution of the original data to increase the accuracy of the interval, and non-parametric or bootstrap methods are of alternative for the data that do not fit normal distribution.

• Advances in aircraft and spacecraft science
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• 제3권2호
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• pp.113-148
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• 2016

In a whole variety of higher order plate theories existing in the literature no consideration is given to the transverse normal strain / deformation effects on flexural response when these higher order theories are applied to shear flexible composite plates in view of minimizing the number of unknown variables. The objective of this study is to carry out cylindrical bending of simply supported laminated composite and sandwich plates using sinusoidal shear and normal deformation plate theory. The most important feature of the present theory is that it includes the effects of transverse normal strain/deformation. The displacement field of the presented theory is built upon classical plate theory and uses sine and cosine functions in terms of thickness coordinate to include the effects of shear deformation and transverse normal strain. The theory accounts for realistic variation of the transverse shear stress through the thickness and satisfies the shear stress free conditions at the top and bottom surfaces of the plate without using the problem dependent shear correction factor. Governing equations and boundary conditions of the theory are obtained using the principle of minimum potential energy. The accuracy of the proposed theory is examined for several configurations of laminates under various static loadings. Some problems are presented for the first time in this paper which can become the base for future research. For the comparison purpose, the numerical results are also generated by using higher order shear deformation theory of Reddy, first-order shear deformation plate theory of Mindlin and classical plate theory. The numerical results show that the present theory provides displacements and stresses very accurately as compared to those obtained by using other theories.

• 융합정보논문지
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• 제11권11호
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• pp.185-194
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• 2021

이 연구는 COVID-19로 인한 학교 교육의 혼란스러운 상태를 파악하고, 국가적 위기에 신속하게 대처하기 위한 학교장의 역할을 모색하는 것을 목적으로 한다. 이를 해결하기 위하여 서울·부산·대구·대전·제주지역 초등학교 교장 34명을 대상으로 COVID-19에 대처하기 위해 학교장에게 어떤 리더십이 필요한지를 1차 SNS를 통해 개방형 문항으로 설문을 하고, 2차는 전화를 통해 심층 면접을 진행했다. 뉴노멀 시대에 교장의 리더십은 위기 상황에 신속하게 대응할 수 있는 능력과 신속한 예산 확보 및 투입, 교원 간 소통 촉진으로 발생할 수 있는 교육활동 지원, 수업 지원, 문제 예방 등에 대한 통찰력 있고, 책임 있는 리더십이 필요하다는 조사 결과가 나왔다. COVID-19과 같은 위기 상황에서 학교가 안정적으로 대처할 수 있는 학교장 역할을 정립하고 안전한 환경에서 학생의 배움이 일어나는 교육 환경 구축이 필요하다. 이를 위해서는 국가적, 교육 정책적 지원이 필요하다.

• 국제교류와 융합교육
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• 제1권2호
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• pp.12-30
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• 2021

교육격차 해소 및 교육 균형 발전을 핵심목적으로 중국 교육부 및 여러 지역 교육청은 무상 사범교육 정책을 적극적으로 추진하고 있다. 본 연구의 목적은 실행 중인 중국 국비 사범교육 정책을 고찰하고, 국비 사범생의 진학동기를 심층적으로 파악함으로써 정책 보완, 교사 양성 등에 대한 제언하고자 한다. 연구목적을 달성하기 위하여 중국 L대학교 재학 중인 26명 국비 사범생들을 대상으로 문화기술지에서 개발된 분류체계분석과 성분분석을 활용하여 그들이 진학했을 때 고려한 요소들을 확인하였다. 분석결과는 개인 차원의 미시적 동기, 가정·학교 차원의 중간적 동기, 국가정책·사회 차원의 거시적 동기로 분류되었다. 부모·선생님 의견이 1위를 차지하였고, 교직확보, 양면일보(학비·기숙사비 면제, 생활수당 지급), 교사 우세와 사회지위 순으로 나타났다. 부모·교사는 국비 사범생들의 진학에 강한 관여성이 지니고 있었고, 교사로서의 적업 이상보다는 경제적 요인이 비교적 영향을 발휘하고 있으며, 국비 사범교육정책의 초점과 맞추지 않은 것으로 보인다. 이에 대해 국비 사범교육 정책의 안내, 직업 정체성 교육 등과 관련한 노력이 필요하다.

• Nano
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• 제13권12호
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• pp.1850147.1-1850147.14
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• 2018

In this work, water-soluble and blue-emitting carbon nanodots (CDs) were synthesized from apple peels for the first time via one-step hydrothermal method. The synthetic route is facile, green, economical and viable. The as-prepared CDs were characterized thoroughly by transmission electron microscopy (TEM), X-ray diffraction (XRD), Raman, Fourier transform infrared (FT-IR), X-ray photoelectron (XPS), fluorescence and UV-Vis absorption spectroscopy in terms of their morphology, surface functional groups and optical properties. The results show that these CDs possessed ultrasmall size, good dispersivity, and high tolerance to pH, ionic strength and continuous UV irradiation. Significantly, the CDs had fast and reversible response towards temperature, and the accurate linear relationship between fluorescence intensity and temperature was used to design a novel nanothermometer in a broad temperature range from 5 to $65^{\circ}C$ facilely. In addition, the fluorescence intensity of CDs was observed to be quenched immediately by Cr(VI) ions based on the inner filter effect. A low-cost Cr(VI) ions sensor was proposed employing CDs as fluorescent probe, and it displayed a wide linear range from 0.5 to $200{\mu}M$ with a detection limit of $0.73{\mu}M$. The practicability of the developed Cr(VI) sensor for real water sample assay was also validated with satisfactory recoveries.

• Clinical and Experimental Reproductive Medicine
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• 제47권4호
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• pp.300-305
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• 2020

Objective: The feasibility of a gonadotropin-releasing hormone agonist (GnRHa) trigger in normal responders is still a matter of debate. The aim of this study was to compare the number of mature oocytes, the number of good-quality embryos, and the live birth rate in normal responders triggered by GnRHa alone, GnRHa and human chorionic gonadotropin (hCG; a dual trigger), and hCG alone. Methods: A retrospective cohort study was conducted at the infertility clinic of a university hospital. Data from 200 normal responders who underwent controlled ovarian hyperstimulation and intracytoplasmic sperm injection with a GnRH antagonist protocol between January 2016 and January 2017 were reviewed. The first study group consisted of patients with cycles triggered by GnRHa alone. The second study group consisted of patients with cycles triggered by both GnRHa and low-dose hCG (a dual trigger). The control group consisted of patients with cycles triggered by hCG alone. Results: The groups were comparable in terms of demographics and cycle characteristics. The numbers of total oocytes retrieved and metaphase II oocytes were similar between the groups. The total numbers of top-quality embryos were 3.2±2.9 in the GnRHa group, 4.4±3.2 in the dual-trigger group, and 2.9±2.1 in the hCG group (p=0.014). The live birth rates were 21.4%, 30.5%, and 28.2% in those groups, respectively (p=0.126). Conclusion: In normal responders, a dual-trigger approach appears superior to an hCG trigger alone with regard to the number of top-quality embryos produced. However, no clinical benefit was apparent in terms of live birth rates.