• Journal of Information Technology Applications and Management
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• v.13 no.2
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• pp.145-162
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• 2006

Despite the careful attention paid by managers and researchers to the effective administration of the S/W Development Project, there are cases where the project goes over-budget or misses deadlines. Existing research blames these problems on task complexity or mismanagement. In order to verify the results that varied according to the fitness between the Task Characteristics and the Project Management Types, a contingency model was employed. The verification of the contingency model demonstrated that the greater the task complexity, the greater the effectiveness of the project coordination, and the lesser the task complexity, the greater the effectiveness of project control. This research is theoretically important in that it develops a composite model to verify the relation between the three factors of Task Characteristics, Project Management Types, and Project Performance that compose the S/W Development Project.

• American Studies
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• v.44 no.2
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• pp.193-210
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• 2021

Theresa Hak Kyung Cha's Dictée proliferates with many pronouns. Whether the various subjects invoked in Dictée refer to a single common figure remains ambiguous. By paying close attention to the ambiguity of narrative voice, this essay examines how the creation of narrative ambiguity in Dictée is closely linked to the author's employment of the second person voice. This essay particularly attends to how Cha explores the narrative possibilities of the second person voice in the text's "Calliope/Epic Poetry" section in order to reflect upon experiences of exile and migration on a transnational scale. Through the intimacy and narrative ambiguity of the second person voice, Cha is able to create an epic on migration that is not only transnational in scope, but also invites the reader to engage with the self-alienating aspects of exilic and immigrant life in an unusually intimate yet powerful manner.

• Journal of Preventive Medicine and Public Health
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• v.53 no.1
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• pp.29-36
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• 2020

Objectives: Prenatal cadmium (Cd) exposure may be associated with attention-deficit/hyperactivity disorder (ADHD) in children. Therefore, the objective of this study was to examine the relationship between Cd exposure during gestation and ADHD at 6 years of age. Methods: As part of an ongoing cohort study (the Environment and Development of Children study), 479 mother-child pairs from Seoul, Korea were included for analysis between 2008 and 2011. The whole blood concentration of Cd was analyzed using atomic absorption spectrophotometry. The parents were surveyed about ADHD behaviors in their children at age 6. Multivariable linear regression models were used to investigate the relationship between prenatal exposure to Cd and ADHD at 6 years of age. Results: Increased prenatal Cd concentrations were associated with increased scores for ADHD for girls, but not for boys, at age 6. A 2-fold increase in the prenatal Cd level was significantly associated with a 22.3% (95% confidence interval, 11.6 to 34.1) increase in ADHD in girls at 6 years of age, as indicated by the linear regression model. Conclusions: Our results identified significant associations between prenatal Cd exposure and ADHD scores in 6-year-old girls.

• Journal of Korean Academy of Nursing
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• v.40 no.3
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• pp.453-461
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• 2010

Purpose: In this study differences in behavioral problems between children at risk for Attention Deficit Hyperactive Disorder (ADHD) and normally developing children were identified. Further, relationships between parental stress, depression, and child behavioral problems according to ADHD symptoms were explored. Methods: Participants were 222 elementary school children and their parents. The ADHD risk group was determined by the Korean-ADHD Rating Scale. Data were collected using the Korean-ADHD Rating Scale, Korean version of Child Behavior CheckList (K-CBCL), Parenting Stress Index, and Beck Depression Inventory. Data were analyzed using t-test, Pearson correlation coefficients, and regression analysis. Results: 1) The ADHD risk group showed higher levels of behavioral problems, parenting stress, and maternal depression than the normal group. 2) There were significant relationships between ADHD scores and parenting stress (r=.66), maternal depression (r=.35), internal behavioral problems (r=.47), and external problems (r=.55), but, ADHD risk scores were negatively correlated with social competence (r=-.40). 3) The regression analysis revealed that ADHD levels affected the child's internal behavioral problems, mediated by maternal depression ($\beta$=.29, p<.001). Conclusion: The study results show that higher risk scores for ADHD indicate a significant effect for behavioral problems. Also, parenting stress and depression influence child's behavioral problems. These results suggest that identification of children at risk for ADHD and development of parental education programs would contribute to the prevention of behavioral problems and aggravation of the ADHD symptoms.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.05a
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• pp.363-365
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• 2023

본 논문에서는 어텐션(Attention) 메커니즘을 이미지 처리에 적용한 연구가 진행되면서 등장한 비전 트랜스포머 (Vision Transformer, ViT)의 한계를 극복하기 위해 ViT 기반의 딥 클러스터링(Deep Clustering) 기법을 제안한다. ViT는 완전히 트랜스포머(Transformer)만을 사용하여 입력 이미지의 패치(patch)들을 벡터로 변환하여 학습하는 모델로, 합성곱 신경망(Convolutional Neural Network, CNN)을 사용하지 않으므로 입력 이미지의 크기에 대한 제한이 없으며 높은 성능을 보인다. 그러나 작은 데이터셋에서는 학습이 어렵다는 단점이 있다. 제안하는 딥 클러스터링 기법은 처음에는 입력 이미지를 임베딩 모델에 통과시켜 임베딩 벡터를 추출하여 클러스터링을 수행한 뒤, 클러스터링 결과를 임베딩 벡터에 반영하도록 업데이트하여 클러스터링을 개선하고, 이를 반복하는 방식이다. 이를 통해 ViT 모델의 일반적인 패턴 파악 능력을 개선하고 더욱 정확한 클러스터링 결과를 얻을 수 있다는 것을 실험을 통해 확인하였다.

• Korean Medical Education Review
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• v.17 no.1
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• pp.20-25
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• 2015

In light of changes in today's medical environment, whether to dismantle the 50-year-old internship training system in the Republic of Korea is under debate. Although the question remains open, discussions on such issues have drawn attention to the quality of the clinical clerkship and student career advisory programs in medical colleges. The purpose of this study is to analyze the experiential clerkship and career exploration issues. Ensuring excellence of the clerkship and career advisory sessions is an essential responsibility of educational institutions regardless of whether the intern training system is dismantled. Important objectives of the experimental clerkship include reinforcing prerequisites established by law, introducing a student practice license, developing a standardized clinical assessment and student portfolio requirement, and publishing a guidebook for clinical directors. For career exploration, it is necessary to broaden participants' experiences of specialties and to manage the variety of student career guidance programs. It is imperative for the Korean Association of Medical Colleges, in collaboration with medical colleges, to play a leading role in focusing more attention and effort on such issues.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.56
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• pp.77-100
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• 2012

China draws lots of attention from many multinational corporations all over the world as one of the biggest market in the world. Due to the huge territory and explosive population, it is considered that China has endless potentiality. Moreover, since China joined the WTO, China opens its market, developing the policies for opening of its market. Based on the enormous purchasing power, China gets another attention in industry of electronic commerce. With the development and expansion of information technologies, China's electronic commerce has rapidly developed. Since the market of electronic commerce in China is in the developing stage, there is still a big market for electronic commerce and also Chinese government has made much effort in order to develop the industry of electronic commerce. However, in spite of these circumstances, the Chinese electronic commerce industry is far behind the developed countries. There could be many reasons for slow development in industry of electronic commerce and the main purpose of this paper is to discuss these reasons. First of all, the current status of electronic commerce industry in China will be analysed, and then, main problems of electronic commerce industry will be discussed in order to find out the reasons why the industry of electronic commerce cannot develop as much as it is anticipated. It is expected that this paper can contribute to understanding electronic commerce industry in China, and it will be helpful for companies which have a plan to extend their businesses in China.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.20 no.2
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• pp.90-96
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• 2009

Objectives: This study examined clinical characteristics associated with bullying in children with attention-deficit/hyperactivity disorder(ADHD). Methods.: Children and their parents were asked to fill out a structured self-report form regarding bullying incidents. To evaluate the characteristics of the children, the results of the ADHD Rating Scale, the Korean version of the Child Behavior Checklist, the ADHD Diagnostic system and the Emotional Recognition Test were used. The agreement of bullying data between each child and their mother and father was measured using Cohen's kappa. The association between victim and perpetrator was analyzed by calculating a contingency coefficient based on chi-square. To compare the characteristics of victimized children and didn't, an independent sample T-test was performed. Results: When children were victims of bullying incidents there was significant agreement between children and parents on the information provided on the self-reports. However, more children reported themselves as a perpetrator of bullying than their parents did. Victimization, that is, the tendency towards being a perpetrator, is associated with the higher level of parental reports of aggressiveness. Conclusion: Victimization of bullying is associated with aggression in children with ADHD. This study suggests that victimized children with ADHD warrant careful evaluation, in particular with regard to the credence placed on parental reports of aggressiveness, and management for aggression.

• Journal of Korean Academy of Nursing
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• v.39 no.1
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• pp.107-115
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• 2009

Purpose: The purpose of this study was to identify the effects of an exercise program on frontal lobe cognitive function in seniors. Methods: The participants were 42 seniors using a health center in Seoul (experimental group) and 28 seniors using a facility for elders in Seoul (control group). The exercise program was carried out for 16 weeks from April to August 2007. The frontal lobe cognitive function, which includes short term memory, attention, immediate memory, delayed memory, verbal fluency and motor function, was measured by the Digit Span Forward test, Trail Making test, Immediate recall words test, Delayed recall words, Controlled oral word association test and Finger tapping test. The collected data were analyzed by Fisher's exact test, Chi-square, t-test, and ANCOVA using the SAS program. Results: The major findings of this study were as follows: Attention (p=.009), immediate memory (p=.005), delayed memory (p=.009), and verbal fluency (p=.004) improved after the exercise program. Conclusion: In this study, the exercise program was effective in improving frontal lobe cognitive function in elders. So it provides basic information for further nursing education on exercise programs which will be effective for prevention of early cognitive function decline in normally aging elders.

• Journal of The Korean Association of Information Education
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• v.17 no.2
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• pp.211-224
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• 2013

The purpose of this study was to find the effective way of composition in terms of UX(user experience) when configuring UI(user interface) of educational game by utilizing ET(eye-tracking). Experimental material was a game related to the middle school 'force and motion'. SMI (SensoMotoric Instruments)' iView X TM RED was used in order to collect eye movement data. The results of this study was as follows. First, the lead element for fast visual attention should be placed in the center when the educational game UI is configured. Second, burton that changes character's features and the information about them should be placed close to each other. Third, learning quiz caught visual attention faster when it was placed on the left side of UI. Fourth, when one UI was overlapped by another, parts that were not overlapped was fixated, too.