• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제32권3호
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• pp.93-98
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• 2021

Electroencephalography (EEG) measures neural activation due to various cognitive processes. EEG and event-related potentials (ERPs) are widely used in studies investigating psychopathology and neural substrates of psychiatric diseases in children and adolescents. The present study aimed to review recent ERP studies in child and adolescent psychiatry. ERPs are non-invasive methods for studying synaptic functions in the brain. ERP might be a candidate biomarker in child-adolescent psychiatry, considering its ability to reflect cognitive and behavioral functions in humans. For the EEG study of psychiatric diseases in children and adolescents, several ERP components have been used, such as mismatch negativity, P300, error-related negativity (ERN), and reward positivity (RewP). Regarding executive functions and inhibition in patients with attention-deficit/hyperactivity disorder (ADHD), P300 latency, and ERN were significantly different in patients with ADHD compared to those in the healthy population. ERN showed meaningful changes in patients with anxiety disorders, such as generalized anxiety disorder, separation anxiety disorder, and obsessive-compulsive disorder. Patients with depression showed significantly attenuated RewP compared to the healthy population, which was related to the symptoms of anhedonia.

• Molecules and Cells
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• 제44권2호
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• pp.63-67
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• 2021

The bed nucleus of the stria terminalis (BNST)-a key part of the extended amygdala-has been implicated in the regulation of diverse behavioral states, ranging from anxiety and reward processing to feeding behavior. Among the host of distinct types of neurons within the BNST, recent investigations employing cell type- and projection-specific circuit dissection techniques (such as optogenetics, chemogenetics, deep-brain calcium imaging, and the genetic and viral methods for targeting specific types of cells) have highlighted the key roles of glutamatergic and GABAergic neurons and their axonal projections. As anticipated from their primary roles in excitatory and inhibitory neurotransmission, these studies established that the glutamatergic and GABAergic subpopulations of the BNST oppositely regulate diverse behavioral states. At the same time, these studies have also revealed unexpected functional specificity and heterogeneity within each subpopulation. In this Minireview, we introduce the body of studies that investigated the function of glutamatergic and GABAergic BNST neurons and their circuits. We also discuss unresolved questions and future directions for a more complete understanding of the cellular diversity and functional heterogeneity within the BNST.

• The Journal of Asian Finance, Economics and Business
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• 제9권4호
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• pp.93-98
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• 2022

The article analyzes the impact of factors affecting the use of cost information is examined, which adds to the empirical evidence on the factors affecting the use of cost information in Vietnam's seafood processing firms. 58 seafood processing firms in Vietnam were surveyed using a questionnaire survey of all levels of management, chief accountants, and accountants. A total of 235 questionnaires were gathered for the survey. Because many of the surveys were invalid due to empty cells, the author selected to use 214 questionnaires. The 5-level Likert scale is familiarly used in many studies, so the author also quantifies each factor according to five levels. Quantitative research was carried out with SPSS 25 software. Research results show that 4 factors The function of cost information, cost management, information technology, and management support in the seafood processing industry in Vietnam all have a positive impact on the use of cost information. The author has provided recommendations based on the research findings to expand the use of cost information, consequently helping to improve the performance of Vietnamese seafood processing businesses. Managers must improve a variety of resources, including facilities (software, hardware), people (in-depth training on CAS for administration), departmental awareness, and UCI's ability to assess responsibility and reward in the organization.

• 방송공학회논문지
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• 제26권7호
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• pp.855-861
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• 2021

Neural Architecture Search (NAS) is cutting-edge technology in the machine learning community. NAS Without Training (NASWOT) recently has been proposed to tackle the high demand of computational resources in NAS by leveraging some indicators to predict the performance of architectures before training. The advantage of these indicators is that they do not require any training. Thus, NASWOT reduces the searching time and computational cost significantly. However, NASWOT only considers high-performing networks which does not guarantee a fast inference speed on hardware devices. In this paper, we propose a multi objectives reward function, which considers the network's latency and the predicted performance, and incorporate it into the Reinforcement Learning approach to search for the best networks with low latency. Unlike other methods, which use FLOPs to measure the latency that does not reflect the actual latency, we obtain the network's latency from the hardware NAS bench. We conduct extensive experiments on NAS-Bench-201 using CIFAR-10, CIFAR-100, and ImageNet-16-120 datasets, and show that the proposed method is capable of generating the best network under latency constrained without training subnetworks.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.1085-1092
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• 2022

Travel distance is a parameter mainly used in the objective function of Construction Site Layout Planning (CSLP) automation models. To obtain travel distance, common approaches, such as linear distance, shortest-distance algorithm, visibility graph, and access road path, concentrate only on identifying the shortest path. However, humans do not necessarily follow one shortest path but can choose a safer and more comfortable path according to their situation within a reasonable range. Thus, paths generated by these approaches may be different from the actual paths of the workers, which may cause a decrease in the reliability of the optimized construction site layout. To solve this problem, this paper adopts reinforcement learning (RL) inspired by various concepts of cognitive science and behavioral psychology to generate a realistic path that mimics the decision-making and behavioral processes of wayfinding of workers on the construction site. To do so, in this paper, the collection of human wayfinding tendencies and the characteristics of the walking environment of construction sites are investigated and the importance of taking these into account in simulating the actual path of workers is emphasized. Furthermore, a simulation developed by mapping the identified tendencies to the reward design shows that the RL agent behaves like a real construction worker. Based on the research findings, some opportunities and challenges were proposed. This study contributes to simulating the potential path of workers based on deep RL, which can be utilized to calculate the travel distance of CSLP automation models, contributing to providing more reliable solutions.

• 노동경제논집
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• 제29권2호
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• pp.29-66
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• 2006

본 연구는 우리나라 내부노동시장에서의 임금결정구조가 어떻게 변화하였는지를 살펴보기 위해 우리나라 대기업의 인사데이터(1996~2000년)를 활용 하였다. IMF 외환위기 이후 한국 대기업을 중심으로 성과급제가 광범위하게 확산되었는데, 과연 이 기업이 의도한 대로 연공임금성을 완화시키고 성과에 따른 보상을 구현했는지를 검증하였다. 임금함수 추정을 통해 성과급제 도입 전후의 임금구조와 임금결정방식을 비교분석한 결과, 실질적인 연공임금성 약화가 이루어지지 못했지만, 성과에 따른 보상은 인사고과에 따른 임금격차로 반영되었고, 성과급제 도입후 지속적으로 확대되고 있어 기업이 의도한 대로 성과에 따른 보상이라는 성과주의 인사제도의 효과가 나타났다. 그러나 이러한 효과에도 불구하고, 아직도 기업이 연공임금체계에서 완전히 탈피했다고 판단할 수 없다. 그 이유는 기업 보상전략의 기본이 되는 직급별 임금 구조의 차이가 성과주의 인사제도의 도입에도 불구하고 여전히 유효하게 작동하고 있기 때문이다.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제30권1호
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• pp.34-41
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• 2019

Objectives: We aimed to compare preterm, neurodevelopmentally disordered and healthy full-term children. Methods: We enrolled 47 children who were born preterm, 40 neurodevelopmentally disordered children, and 80 healthy children as control participants, in order to assess the cognitive functioning and the risk of behavioral problems at the age of 5. Children were assessed using the Korean Wechsler Preschool and Primary Scale of Intelligence-4th edition (K-WPPSI-IV), the Child Behavior Checklist (CBCL), and the Temperament and Character Inventory (TCI). Results: The mean K-WPPSI-IV score of the preterm group was $87.19{\pm}17.36$, which was significantly higher than that of the neurodevelopmental disorder group ($69.98{\pm}28.63$; p<0.001) but lower than that of the control group ($107.74{\pm}14.21$; p<0.001). The cumulative CBCL scores of the preterm children were not significantly different from those of the control group. Additionally, the TCI scores for reward dependence of the preterm children were higher than those of the control group. Conclusion: The cognitive performance of preterm infants was lower than that of healthy full-term infants at the age of 5, and there was an association between slower growth and decreased cognitive ability.

• 대한통합의학회지
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• 제5권1호
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• pp.67-74
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• 2017

Purpose : Forward head posture is typical neck disorders occur in all people. And this attitude causes a shortening and weakening of the muscles in the body. It also causes excessive extension acts as a reward. This attitude has to change if the pain occurs around the neck and shoulders, and are subjected to unusual stress. Patients with chronic neck pain associated with forward head posture was found to be the more severe the fall of the respiratory, forward head posture poor quality of much breath. The purpose of this study was to compare the effect of changes in forward head posture and neutral head posture on respiratory. Method : Forty volunteers were participated in study and divided into two groups [forward head posture group (n=20) and neutral head posture group (n=20)]. We measured cervical alignment with global postural system to find out a forward head posture. Respiratory function was measured with a SPIROVIT SP-1 equipment and we found out a forced vital capacity (FVC), forced expiratory volume at one second (FEV1) and FEV1/FVC. A pared t-test was used to determine a statistical significance for the pulmonary function variation and a independent t-test was used to determine a statistical significance in the two groups. Results : In the experimental group, FVC and FEV1 were significantly higher in the artificial neutral head posture than in the forward head posture. In the control group, FVC and FEV1 were significantly higher in the neutral head posture than in the forward head posture. FVC, FEV1, and FEV1/ FVC were significantly higher in the neutral head posture of control group than the artificial neutral head posture of experimental group and higher in the artificial forward head posture of control group than the forward head posture of experimental group. Conclusion : In conclusion, neutral head posture is considered to be an important factor in correct posture and improvement of lung function and continuous study of posture correction program for posture imbalance will be needed.

• 한국병원경영학회지
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• 제19권3호
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• pp.29-42
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• 2014

This study included empirical methods of study such as surveys and interviews with military hospital administrators from 14 military hospitals across the country. The results of the study is described below. First, results by demographic characteristics show that higher level of organizational commitment was found in males than females and in singles than married couples. Also, by organizational units, major units of military hospitals showed higher level of organizational commitment as well as job satisfaction. Second, Fair compensation had positive(+) effects on the study participants' job satisfaction and organizational commitment as the research hypothesized. Compensation included monetary and social benefits for the work performed. A transparent compensation system to reward members that performed the best for the department and the corps with appropriate amounts must be in place. Third, the organization culture of being considerate had positive(+) effects on job satisfaction and organizational commitment while the culture of giving commands had negative(-) effects. Fourth, Conflict factors had negative(-) effects on job satisfaction with no direct effect on organizational commitment. Any organization must take measures when adverse effects of conflicts surface. As shown by the analysis results, conflict factors bring negative results to job satisfaction and organizational commitments. Department managers should utilize the proper function of conflicts as an accelerator in organization operation.

• 한국콘텐츠학회논문지
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• 제8권10호
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• pp.287-300
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• 2008

본 연구는 호텔기업에 새로운 이미지를 창출하고, 호텔상품 및 서비스의 품질개선을 주도하여 고객에게 더 나은 가치를 제공하고, 호텔 가치를 증대시키는 요인으로 적정한 호텔종사원관리에 대한 바람직한 총지배인의 발전적 리더십이 형성되고 작용되어야 한다는 것이다. 하부조직구성원이 창조적이면서 동의할 수 있을 가치와 도덕이 뒷받침된 인간의 가치 존중에 바탕을 둔 새로운 총지배인 리더십을 원하는 것이다. 분석결과 효율적 경영실천을 위한 아래로부터의 커뮤니케이션 및 직무이해, 창조적인 종사원 직무환경, 경쟁력 있는 종사원 임금, 발전적인 종사원 권한위임 요인들과 표출된 세부항목들을 새로이 인식하고 결집시켜 호텔종사원 관리적 새로운 기업문화의 틀을 실행해 나가야 할 것이다.