• 대한의용생체공학회:의공학회지
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• 제44권1호
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• pp.53-63
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• 2023

There have been many studies from the genetic system to physical activity and emotional expression such that there are gender differences. The purpose of this study was to determine how the structural characteristics of cortical thickness differ between males and females. This study used data from the Human Connectome Project (HCP). To analyze age-specific sexual dimorphisms of cortical thickness, selected 8-80 year old subjects were divided into five detailed age range groups according to each criterion. A total of 1,700 individual brain MRI T1 data were registered in stereotaxic space for analysis and classified into white matter (WM), gray matter (GM), and cerebro-spinal fluid (CSF). For surface-based analysis, the WM/GM surface was reconstructed from a spherical polygon model with 40962 vertices per hemisphere, and each vertex was extended to the GM/CSF boundary. Cortical thickness was then measured between each vertex using the t-link method. In the statistical analysis, intracranial volume was used as a covariate to exclude the effect of the difference in brain size of each individual, and the result of using age as a covariate was added to confirm the age effect within each group. Gender differences in cortical thickness had significant results by group. This may be an index to explain diseases with sexual dimorphism in prevalence or become a basis for explaining the characteristics of each sex that appear in behavior, personality, and aging. Therefore, the results of our study could be a criterion for age classification in future studies and for understanding 'normal' sexual dimorphism.

• 디지털산업정보학회논문지
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• 제18권4호
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• pp.97-110
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• 2022

The purpose of this study is to analyze the level of public data convergence capabilities of administrative organizations and to explore important variables in data-based organizational capabilities. The theoretical background was summarized on public data and use activation, joint use, convergence, administrative organization, and convergence constraints. These contents were explained Public Data Act, the Electronic Government Act, and the Data-Based Administrative Act. The research model was set as the data-based organizational capabilities effect by a data-based administrative capability, public data operation capabilities, and public data operation constraints. It was also set whether there is a capabilities difference data-based on an organizational operation by the level of data convergence capabilities. This study analysis was conducted with hierarchical cluster analysis and multiple regression analysis. As the research result, First, hierarchical cluster analysis was classified into three groups. It was classified into a group that uses only public data and structured data, a group that uses public data on both structured and unstructured data, and a group that uses both public and private data. Second, the critical variables of data-based organizational operation capabilities were found in the data-based administrative planning and administrative technology, the supervisory organizations and technical systems by public data convergence, and the data sharing and market transaction constraints. Finally, the essential independent variables on data-based organizational competencies differ by group. This study contributed. As a theoretical implication, this research is updated on management information systems by explaining the Public Data Act, the Electronic Government Act, and the Data-Based Administrative Act. As a practical implication, the activity reinforcement of public data should be promoting the establishment of data standardization and search convenience and elimination of the lukewarm attitudes and Selfishness behavior for data sharing.

• Mass Spectrometry Letters
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• 제13권3호
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• pp.49-57
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• 2022

During electrospray ionization mass spectrometry (ESI-MS) analysis of proteins, the addition of supercharging agents allows for adjusting the maximal charge state, affecting the charge state distribution, and increases the number of ions reaching the detector thus, improving signal detection. We postulate that in di-substituted arene isomers, molecules with higher polarizability values should generate greater interactions and hence elicit higher signal intensities. Polarizability is an electronic parameter which has been demonstrated to predict many chemical interactions. Many properties can be predicted based on charge polarization. Molecular polarizability is a vital descriptor for explaining intermolecular interactions. We employed DFT (density functional/Hartree-Fock hybrid model, B3LYP)-derived descriptors and computed molecular polarizability for ten disubstituted arene reagents, each set made up of three (ortho, meta, para) isomers, with reported use as supercharging reagents during ESI experiments. The atomic electronic inputs were ionization potential (IP), electron affinity (EA), electronegativity (𝛘), hardness (η), chemical potential (µ), and dipole moment (D). We determined that the para isomers showed the highest polarizability values in nine of the ten sets. There was no difference between the ortho and meta isomers. Polarizability also increased with increasing complexity of the substituents on the benzene ring. Polarizability correlated positively with IP, EA, 𝛘, η, and D but correlated negatively with chemical potential. This DFT study predicts that the para isomers of di-substituted arene isomers should elicit the strongest ESI responses. An experimental comparison of the three isomers, especially of larger supercharging molecules, could be carried out to establish this premise.

• 대한통합의학회지
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• 제11권3호
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• pp.69-78
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• 2023

Purpose : Establishing competency in person-centered care is crucial for providing high-quality nursing care in diverse clinical settings and adapting to changing roles in different situations. This study aimed to explore the level of transcultural self-efficacy, cultural empathy, and person-centered care competency among nursing students, as well as identify the factors influencing their person-centered care competency. The findings will serve as fundamental data to enhance person-centered care competency. Methods : A questionnaire consisting of items on general characteristics, person-centered care competency, transcultural self-efficacy, and cultural empathy was administered to 175 nursing students in G city. Data were collected from March 5, 2023, to March 20, 2023. The collected data were analyzed using the SPSS 23.0 program. Pearson's correlation coefficients were used to examine the correlation among transcultural self-efficacy, cultural empathy, and person-centered care competency. Multiple regression analysis was employed to determine the factors influencing person-centered care competency. Results : The person-centered care competency scores were above the average level and varied according to department satisfaction (F=13.79, p<.001), subjective well-being (t=3.34, p=.015), and interpersonal relations (F=5.74, p=.001). Person-centered care competency exhibited a significant positive correlation with cultural empathy (r=.51, p<.001) and transcultural self-efficacy (r=.49, p<.001). Regression analysis confirmed that cultural empathy (β=.39, p<.001) and transcultural self-efficacy (β=.22, p<.001) were influential factors for nursing students' person-centered care competency, with the model explaining 37 % of the variance. Conclusion : Cultural empathy and transcultural self-efficacy are significant factors influencing the person-centered care competency of nursing students. It is crucial to encourage nursing students to develop person-centered care competency by fostering cultural empathy and transcultural self-efficacy. Further research is needed to identify additional factors affecting person-centered care competency among nursing students. Additionally, the development of education programs aimed at enhancing person-centered care competency is necessary.

• 한국의류산업학회지
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• 제25권3호
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• pp.291-303
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• 2023

The purpose of this study is to investigate the impact of technical acceptance factors of Chinese MZ generation consumers' use of online fashion platforms on behavioral intentions and usage behavior, and to determine whether satisfaction plays an additional role in the relationship between behavioral intentions and usage behavior. The research results can be summarized as follows. First, among the technology acceptance factors that influence Generation MZ consumers when they use online fashion platforms, it was found that performance expectancy, effort expectancy, facilitating conditions, hedonic motivation, price value, habit, and content quality significantly influence the behavioral intention to use online fashion platforms. Second, the facilitating conditions and the platform usage intention of Chinese Generation MZ consumers directly and significantly influence the usage behavior on online fashion platforms. In contrast, it was confirmed that habit does not significantly influence actual usage behavior. Third, this study confirmed the moderating effect of satisfaction on the relationship between behavioral intention and usage behavior on online fashion platforms. This research, which proposes a research model explaining the usage intention and behavior of online fashion platforms based on UTAUT2, integrating not only the organizational aspect but also the consumer aspect to empirically verify the usage intention and the final usage behavior from the general consumer's perspective, has academic significance.

• 사회복지연구
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• 제40권2호
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• pp.253-283
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• 2009

이 연구는 사회보험에의 배제 구조를 규명하기 위한 작업의 일환으로, 노동시장 구조가 사회보험 배제를 가져오는 메커니즘을 분석하였다. 분석자료는 2007년에 조사된 한국복지패널 2차 자료이며, 이 중에서 임금근로자 3,790명을 분석대상으로 하여 Mplus 프로그램을 이용하여 경로분석과 구조방정식 분석을 수행하였다. 분석결과, 첫째, 특정 업종과 직종, 사업장규모, 고용형태, 소득수준 등의 일련의 노동시장 구조적 측면들은 높은 인과적 경로관계를 형성하고 있어 노동시장의 불평등성을 보여주었다. 둘째, 사회보험 배제는 근로자의 개인적 속성에 따라 개별적으로 결정되기보다는 노동시장의 구조적 측면들의 결합적 작용에 의해 체계적으로 발생하는 것으로 나타났다. 셋째, 영세 소규모 사업장, '비정규직'(혹은 고용형태) 등이 사회보험 배제를 설명하는 주요한 노동시장 요인으로 밝혀졌다. 마지막으로, 여성은 노동시장의 구조화된 불평등과 사회보험 배제를 집약적으로 경험하고 있음을 확인하였다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2022년도 추계학술대회
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• pp.72-74
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• 2022

국가과학기술지식정보서비스(이하 NTIS)에서는 국가R&D과제정보를 제공하고 있다. 과제정보는 '과제명', '과제수행기관', '연구책임자명' 등의 메타정보와 '연구목표', '연구내용', '기대효과'와 같은 과제를 설명하는 텍스트들로 구성되어있다. 과제정보 100만건을 대상으로 검색한 결과목록에서 '연구목표' 나 '연구내용' 등을 모두 확인하여 원하는 과제정보를 찾기 위해서는 많은 시간이 필요하다는 문제가 있다. 이러한 문제점을 해소하기 위해, 본 논문에서는 국가R&D 과제정보 내에서 장문의 텍스트로 구성된 부분을 요약하는 과제정보 요약 시스템을 제안하고자 한다. 한국어의 언어학적 특징을 분석하여 전처리기를 구축하고 전처리된 텍스트 정보를 처리하기 위한 자연어 처리 기술 기반 과제정보 요약 모델을 개발하였다. 이를 통해 장문으로 구성된 과제정보를 압축 및 요약된 형태로 제공하여, 이용자들이 요약정보만으로도 전반적인 내용을 쉽고 빠르게 유추하는 데 도움이 될 것이다.

• Journal of Animal Science and Technology
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• 제65권5호
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• pp.939-950
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• 2023

This study was conducted to assess the impact of growing condition variables on alfalfa (Medicago sativa L.) productivity. A total of 197 alfalfa yield results were acquired from the alfalfa field trials conducted by the South Korean National Agricultural Cooperative Federation or Rural Development Administration between 1983 and 2008. The corresponding climate and soil data were collected from the database of the Korean Meteorological Administration. Twenty-three growing condition variables were developed as explaining variables for alfalfa forage biomass production. Among them, twelve variables were chosen based on the significance of the partial-correlation coefficients or potential agricultural values. The selected partial correlation coefficients between the variables and alfalfa forage biomass ranged from -0.021 to 0.696. The influence of the selected twelve variables on yearly alfalfa production was summarized into three dominant factors through factor analysis. Along with the accumulated temperature variables, the loading scores of the daily mean temperature higher than 25℃ were over 0.88 in factor 1. The sunshine duration at temperature between 0℃-25℃ was 0.939 in factor 2. Precipitation days were 0.82, which was the greatest in factor 3. Stepwise regression applied with the three dominant factors resulted in the coefficients of factors 1, 2, and 3 for 0.633, 0.485, and 0.115, respectively, and the R-square of the model was 0.602. The environmental conditions limiting alfalfa growth, such as daily temperature higher than 25℃ or daily mean temperature affected annual alfalfa production most substantially among the growing condition variables. Therefore, future cultivar selection should consider the capability of alfalfa to be tolerant to extreme summer weather along with biomass production potential.

• 대한물리의학회지
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• 제18권4호
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• pp.155-162
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• 2023

PURPOSE: The primary objective of this study was to develop a virtual reality-based vestibular rehabilitation system to enhance balance perception, target rehabilitation specialists, and evaluate its usability. A key goal was establishing a system refinement strategy based on the collected data. METHODS: We conducted a study involving ten adults aged 10 to 29 in Gwangju Metropolitan City to evaluate the usability of a virtual reality-based vestibular rehabilitation system to enhance balance perception. After introducing the product and explaining its use to the participants, balance assessments and training were conducted using computerized dynamic posturography (CDP) (also called the test of balance [TOB]). Subsequently, participants were given a questionnaire to evaluate subjective stability, operability, and satisfaction. Frequency analysis was utilized to determine the frequency of the variable values of the measurement items in the survey for descriptive statistics. RESULTS: We found that the average usability score was 2.587. When broken down by category, stability received an average rating of 2.725, operability scored an average of 2.783, and satisfaction averaged 2.454. These findings suggest that most participants experienced positive sentiments and considerable satisfaction. CONCLUSION: The study successfully developed a virtual reality-based vestibular rehabilitation system, which was an improvement over the previous model and addressed its shortcomings. The results show that users with vestibular impairments are satisfied and more engaged with this system, indicating that additional studies are warranted.

• Nutrition Research and Practice
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• 제17권5호
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• pp.1019-1027
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• 2023

BACKGROUND/OBJECTIVES: Sustainability has become one of the top priorities in the foodservice industry. With an increase in consumer interest in sustainability and educational opportunities in higher education, it is important to know what sustainable practices are implemented in campus dining and how sustainable practices affect consumers' responses. This study aims to identify the key sustainable practices in the campus dining context, and investigate the relationship by applying the stimulus-organism-response framework to determine whether the key sustainable practices influence consumers' perception and behavioral intentions. SUBJECTS/METHODS: The self-administered online survey was distributed to college students in 8 dining halls at a large southeastern university in the United States from September 20-October 10, 2019. A total of 382 valid questionnaires were collected, and factor analysis and multiple regressions were utilized to test the research model. RESULTS: This study identified 4 dimensions of campus sustainability with a total of sustainable practices: sustainable food, waste management, energy/water conservation, and recycling/reuse. Three dimensions of sustainable campus practices (i.e., sustainable food, waste management, recycling/reuse) played a significant role in consumers forming a perceived value while energy/water conservation did not significantly influence the consumers' perceived value toward the campus dining. Waste management was identified as the most important practice to enhance consumers' perceived value (β = 0.330). Using sustainable food and recycling/reuse were ranked second and third, respectively (β = 0.262, β = 0.154). The findings confirmed the significant positive relationship between perceived value and revisit intentions. CONCLUSIONS: The findings support the inclusion of dining sustainability as a critical component in explaining college students' perceived value and revisit intention toward campus dining. Furthermore, this study provides practical implications for university administrators and foodservice operators to consider the key sustainable practices to meet the consumers' value and revisit intentions.