• 중환자간호학회지
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• 제15권1호
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• pp.1-12
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• 2022

Purpose : This study aimed to identify the status of intrahospital transport (IHT) of critically ill patients and provide baseline data to form recommendations for safer transport. Methods : Data were collected from 141 intensive care unit (ICU) nurses who attended national conferences between February and August, 2018. The collected data were analyzed using descriptive statistics and ANOVA, and post-hoc analysis was conducted with the Scheffé and Games-Howell tests. Results : Of the nurses surveyed, 61.7% answered that their workplace had a transport guideline. In terms of the experience of ICU nurses, 31.2% of respondents answered that they had received training on IHT. This result indicated that the degree of implementation of the guidelines for IHT was generally high, but some, including guidelines on personnel, equipment, and monitoring, were not. Guidelines of IHT were well observed when the institutes had specific guidelines for IHT of critically ill patients with specified transport grades, a scoring system to assess stability of a patient, a checklist and a protocol for action in case of problems, and when healthcare providers were provided with training. Conclusion : These results suggest that organized infrastructure, such as a transport guideline with transport grades, a checklist to improve the implementation of guidelines, and a protocol for coping with a problem, should be provided for safe transport. Additionally, effective education and evaluation to improve the competency of staff participating in the transport of patients will help reduce the occurrence of adverse events in intensive care transport in hospitals and promote patient safety.

• Journal of Veterinary Science
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• 제21권4호
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• pp.58.1-58.11
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• 2020

Background: Quantitative evaluation of renal cortical echogenicity (RCE) has been tried and developed in human and veterinary medicine. Objectives: The objective of this study was to propose a method for evaluating RCE quantitatively and intuitively, and to determine associations between ultrasonographic renal structural distinction and estimated glomerular filtration rate (eGFR) in canine chronic kidney disease (CKD). Methods: Data were collected on 63 dogs, including 27 with normal kidney function and 36 CKD patients. Symmetric dimethylarginine and creatinine concentrations were measured for calculating eGFR. RCE was evaluated as 3 grades on ultrasonography images according to the distinction between the renal cortex and outer medulla. The RCE grade of each kidney was measured. Results: There was a significant difference in eGFR between the group normal and CKD (p < 0.001). As mean of RCE grades (the mean values of each right and left kidney's RCE grade) increases, the proportion of group CKD among the patients in each grade increases (p < 0.001). Also, severity of RCE (classified as "high" if any right or left kidney evaluated as RCE grade 3, "low" otherwise) and eGFR is good indicator for predicting group CKD (p < 0.001). Conclusions: The degree of distinction between the renal cortex and the outer medulla is closely related to renal function including eGFR and the RCE grade defined in this study can be used as a method of objectively evaluating RCE.

• 한국초등과학교육학회지:초등과학교육
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• 제41권3호
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• pp.443-456
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• 2022

본 연구는 초등학교 저학년 학생을 대상으로 과학 진로교육 프로그램을 개발하고 적용하여 초등학교 저학년에서의 과학 진로교육의 가능성과 발전방안을 모색하는 데 목적이 있다. 그를 위하여 먼저 초등학교 저학년 학생이 가진 과학자와 과학에 대한 이미지를 분석하고, 과학 진로교육 프로그램 적용 후 과학자와 과학에 대한 인식의 변화를 살펴보았다. 또 과학자 되어보기 활동을 통하여 과학에 대한 흥미를 알아보고, 과학 진로교육 프로그램에 대한 학생의 인식을 설문지와 면담을 통하여 분석하였다. 결과는 다음과 같다. 첫째, 초등 저학년용 과학 진로교육 프로그램은 학생들의 과학자와 과학에 대한 인식에 긍정적인 영향을 주었다. 둘째, 초등 저학년용 과학 진로교육 프로그램은 학생들의 과학에 대한 흥미에 영향을 준다. 셋째, 초등 저학년용 과학 진로교육 프로그램에 대한 학생들의 인식은 긍정적으로 나타났다. 학생들은 프로그램에 대한 흥미도, 참여도, 이해도 모두에 높은 점수를 주었다.

• Journal of Animal Science and Technology
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• 제64권1호
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• pp.135-142
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• 2022

It is impossible to know the amount of pork primal cut by pig carcass grade which is determined only by carcass weight and backfat thickness in the Korean Pig Carcass System. The aim of this study was to investigate the correlation between the pig carcass grade and the amount of pork primal cut estimated with AutoFom III. A total of 419,321 Landrace, Yorkshire, and Duroc (LYD) pigs were graded with the Korean Pig Carcass Grade System. Amounts of belly, neck, loin, tenderloin, spare ribs, shoulder, and ham were estimated with AutoFom III. Regression equations for seven primal cuts according to each grade were derived. There were significant differences among the three carcass grades due to heteroscedasticity variance (p < 0.0001). Three regression equations were derived from AutoFom III estimation of primal cuts according to carcass grades. The coefficient of determination of the regression equation was 0.941 for grade 1⁺, 0.982 for grade 1, and 0.993 for grade 2. Regression equations obtained from this study are suitable for AutoFom III software, a useful tool for the analysis of each pig carcass grade in the Korean Pig Carcass Grade System. The high reliability of predicting the amount of primal cut with AutoFom III is advantageous for the management of slaughterhouses to optimize their product sorting in Korea.

• 융합정보논문지
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• 제12권2호
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• pp.157-162
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• 2022

지식정보 사회에서는 일상생활에서 만나는 다양한 문제들을 컴퓨팅 사고를 바탕으로 해결할 수 있도록 디지털 리터러시 교육과 함께 AI 기술을 활용할 수 있는 인공지능 교육이 필요하다. 본 논문에서는 대학에서 컴퓨터 비전공자들을 중심으로 컴퓨터프로그래밍을 가르치면서 데이터 중심의 인공지능 교육을 실시하고, 학생들의 만족도 조사와 함께 학업성적 요인과 관련된 주요 요인들의 상관관계를 분석하였다. 그 결과, 성적과 문제해결력 기반의 과제와 학습 만족도가 강한 상관이 나타났고, 다중 회귀 분석 결과에서도 성적에 유의한 영향(F=225.859, p<0.001)을 주는 것으로 나타났으며, 학생들의 만족도가 높게 나타났다. 비전공자들에게도 프로젝트 형태의 구체적인 사례를 중심으로 데이터의 중요성과 인공지능 모델의 개념을 이해하고, 자신의 관심 분야에서 인공지능을 원활하게 활용할 수 있음을 확인할 수 있었다. 이러한 인공지능 교육 사례가 정립되고, 학생들의 인공지능 교육이 활성화된다면, 인공지능 기술의 관심을 통해 인공지능 전문가들과 협업할 수 있는 인공지능 교육의 방향을 제시할 수 있을 것이다.

• Geomechanics and Engineering
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• 제36권1호
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• pp.51-69
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• 2024

Currently, composite lining mountain tunnels in China are generally classified based on the [BQ] method for the surrounding rock grade. Increasingly, tunnel field construction is replicated indoors for scale down model tests. However, the development of analogous materials for model tests of composite lining tunnels with different surrounding rock grades is still unclear. In this study, typical Class III and V surrounding rock analogous materials and corresponding composite lining support materials were developed. The whole processes of excavation-support dynamics of the mountain tunnels were simulated. Data on the variation of deformations, contact pressures and strains on the surrounding rock were obtained. Finally, a comparative analysis between model tests and numerical simulations was performed to verify the rationality of analogous material development. The following useful conclusions were obtained by analyzing the data from the tests. The main analogous materials of Class III surrounding rock are barite powder, high-strength gypsum and quartz sand with fly ash, quartz sand, anhydrous ethanol and rosin for Class V surrounding rock. Analogous materials for rockbolts, steel arches are replaced by aluminum bar and iron bar respectively with both shotcrete and secondary lining corresponding to gypsum and water. In addition, load release rate of Class V surrounding rock should be less than Class III surrounding rock. The fenestration level had large influence on the load sharing ratio of the secondary lining, with a difference of more than 30%, while the influence of the support time was smaller. The Sharing ratios of secondary lining in Class III surrounding rock do not exceed 12%, while those of Class V surrounding rock exceed 40%. The overall difference between the results of model tests and numerical simulations is small, which verifies the feasibility of similar material development in this study.

• 치위생과학회지
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• 제16권2호
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• pp.111-117
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• 2016

이번 연구는 생애 과도기이자 입시 스트레스를 비롯한 여러 스트레스를 겪고 있는 고등학생을 대상으로 청소년의 스트레스 인지수준이 식습관과 구강보건행태에 어떤 관련성이 있는지 파악하고자 전라북도 일부 지역에 위치한 고등학교 1~3학년을 대상으로 설문조사를 실시하여 다음과 같은 결론을 얻었다. 가장 높은 스트레스 유형은 학업 스트레스로 $3.09{\pm}0.89$를 보였고, 그 다음은 가정(가족) 스트레스가 $2.85{\pm}0.84$로 나타났다. 여학생보다 남학생이 치과의료기관을 이용할 가능성은 적은 것으로 나타났으며, 주관적 구강건강상태에서는 본인의 구강건강상태가 좋지 않다고 생각하거나 보통이라고 생각하는 사람의 치과의료기관을 방문할 가능성이 적은 것으로 나타났다(p<0.05). 또한 스트레스가 높을수록 치과의료기관을 방문할 가능성은 높은 것으로 나타났고(p<0.05), 성적이 상위권인 학생들이 규칙적인 식사를 할 가능성이 높게 나타났다(p<0.01). 스트레스가 높을수록 우식성 식품을 섭취할 가능성이 유의하게 높았으며(p<0.01), 성적이 중위권인 학생들이 우식성 식품을 섭취의 가능성이 높게 나타났으나(p<0.01), 상위권인 학생들은 우식성 식품의 섭취 가능성이 낮게 나타났다(p<0.05). 이상의 결과로 볼 때 스트레스 인지수준이 식습관과 구강보건행태에 영향을 주고 있음을 나타내므로 스트레스를 완화시키기 위해 학교 내에서는 고등학생들의 신체적, 정신적 건강을 증진시킬 수 있는 프로그램을 개발해야 하며, 바람직한 식습관 형성을 위해 실질적이고 체계적인 구강보건교 육이 필요할 것으로 생각된다.

• 가정과삶의질연구
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• 제34권6호
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• pp.1-14
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• 2016

The purpose of this study is to examine the relation among adolescents' perception of parental overprotection, goal-seeking orientation, self-handicapping and academic procrastination. Questionnaires were administered to 1200 male and female high school students in Gyeonggi Province. A total of 942 questionnaires were statistically analyzed through mean, standard deviation, frequency analysis, one-way analysis of variance, Pearson's correlation analysis, and multiple regression analysis. The major results of the study are as follows: First, adolescents' academic procrastination differed by school grades. Second, for the high-performing group, self-handicapping, goal-seeking orientation and parental overprotection were significant predictors of their academic procrastination. For the mid-level performing group, self-handicapping and goal-seeking orientation were significant predictors of their academic procrastination. For the low-performing group, self-handicapping was the only predictor of their academic procrastination. Third, for the high-performing group, self-handicapping meditated the relation between parental overprotection and academic procrastination. Those results provide useful information regarding proactive support or intervention for adolescents' academic procrastination.

• Childhood Kidney Diseases
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• 제19권1호
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• pp.8-13
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• 2015

Antenatal hydronephrosis (ANH) is one of the most common abnormal findings detected on prenatal ultrasound (US), and it has been reported in 1-5% of all pregnancies. The likelihood of significant postnatal pathologic abnormality in the urinary tract correlates with the degree of anterior-posterior diameter (APD) according to the gestational age. Detection of urologic anomalies prenatally permits fetal interventions that avoid complications in rare cases of bladder outlet obstruction with oligohydramnios even though their final benefits still remain controversial. There is no clear consensus on the extent and mode of postnatal imaging after a diagnosis of ANH. US is the mainstay of the postnatal evaluation and helps guide further testing with voiding cystourethrography (VCUG) and diuretic renography. Although most algorithms continue to recommend generous VCUG for identification of lower urinary tract anomalies, VCUG may be safely reserved for high grade ANH cases or any grade of ANH with dilated distal ureter without increasing the risk of urinary tract infection (UTI). There are conflicting studies about efficacy of postnatal prophylactic antibiotics. It still seems reasonable to consider use of a prophylactic antibiotic to prevent infant UTIs in high-risk populations, such as females and uncircumcised males with high grades of hydronephrosis, hydroureteronephrosis, or vesicouretral reflux.

• Steel and Composite Structures
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• 제10권5호
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• pp.385-414
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• 2010

In current European Standard EN 1993, the moment-rotation characteristics of beam-to-column joints made from steel with a yield stress > 460MPa are obtained from elastic design procedures. The strength of the joint basic components, such as the column web subject to local transverse compression, is thus limited to the yield resistance rather than the plastic resistance. With the recent developments of higher strength steel grades, the need for these restrictions should be revisited. However, as the strength of the steel is increased, the buckling characteristics become more significant and thus instability phenomena may govern the design. This paper summarizes a comprehensive set of finite element parametric studies pertaining to the strength behaviour of high-strength steel unstiffened I-columns in transverse compression. The paper outlines the implementation and validation of a three-dimensional finite element model and presents the relevant numerical test results. The finite element predictions are evaluated against the strength values anticipated by the EN 1993 for conventional steel columns and recommendations are made for revising the specifications.