• 한국생활과학회지
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• 제20권5호
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• pp.927-940
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• 2011

This study examined the effects of children's negative emotionality, emotional regulation, and maternal parenting behaviors on their relational and overt aggression. The participants were 355 children(174 boys, 181 girls; aged 4-5 years old) and their mothers. The teachers completed rating scales to measure the children's aggression and emotion regulation. The children's negative emotionality and maternal parenting behaviors were assessed by a mother reported questionnaire. The collected data was analyzed using descriptive statistics, t-tests, correlations, and hierarchical multiple regressions. Results showed that Children's negative emotionality was positively related to their relational and overt aggression. Children's emotional regulation had a negative relation to their relational and overt aggression. Mother's limit-setting and rejection-neglect was significantly related to children's relational aggression, whereas mother's warmth-encouragement and rejection-neglect was negatively related to children's overt aggression. Hierarchical regression analysis indicated that the interaction of children's negative emotionality and mother's overprotection-permission predicted children's overt aggression. Children's negative emotionality, whose mothers demonstrated middle and high level of overprotection-permission, was associated significantly with overt aggression. In addition, the association between mother's parenting behaviors and children's aggressions were mediated by their emotion regulation. The findings point to similarities and differences between relational and overt aggression in relation to children's negative emotionality, emotional regulation and maternal parenting behaviors.

• Journal of Korean Neurosurgical Society
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• 제52권5호
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• pp.466-471
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• 2012

Objective : The aim of this study was to devise an objective clustering method for magnetoencephalography (MEG) interictal spike sources, and to identify the prognostic value of the new clustering method in adult epilepsy patients with cortical dysplasia (CD). Methods : We retrospectively analyzed 25 adult patients with histologically proven CD, who underwent MEG examination and surgical resection for intractable epilepsy. The mean postoperative follow-up period was 3.1 years. A hierarchical clustering method was adopted for MEG interictal spike source clustering. Clustered sources were then tested for their prognostic value toward surgical outcome. Results : Postoperative seizure outcome was Engel class I in 6 (24%), class II in 3 (12%), class III in 12 (48%), and class IV in 4 (16%) patients. With respect to MEG spike clustering, 12 of 25 (48%) patients showed 1 cluster, 2 (8%) showed 2 or more clusters within the same lobe, 10 (40%) showed 2 or more clusters in a different lobe, and 1 (4%) patient had only scattered spikes with no clustering. Patients who showed focal clustering achieved better surgical outcome than distributed cases (p=0.017). Conclusion : This is the first study that introduces an objective method to classify the distribution of MEG interictal spike sources. By using a hierarchical clustering method, we found that the presence of focal clustered spikes predicts a better postoperative outcome in epilepsy patients with CD.

• 한국의류학회지
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• 제31권8호
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• pp.1168-1179
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• 2007

The objective of this research is to validate the BRQ(Brand Relationship Quality) Construct perceived by fashion product consumers. In order to establish and verify the BRQ scale, qualitative survey and quantitative survey were conducted together. 1592 copies of questionnaire were distributed to women in their 20s to 40s living in Seoul and other metropolitan areas from Dec. 26, 2005 to Jan. 8, 2006, and 723 copies of them were used for statistical data. Samplel(n=482)was used for empirical analysis, and sample2(n=241) was used for cross validity test. The data was analyzed using Exploratory Factor Analysis, Confirmatory Factor Analysis, and Pearson's Correlation Analysis. BRQ emerged from exploratory factor analysis as the hierarchical construct composed of six facets including 'self-connective attachment', 'symbol/mystery', 'trust', 'nostalgia', 'intimacy', and 'knowledge'. As the fit of this structural model was not good as a result of Confirmatory Factor Analysis, it was revised to have better fitting. Finally, empirical survey results indicate the hierarchical construct consisting of eight distinct BRQ facets including 'love/commitment', 'self-connection', 'symbol', 'mystery', 'trust', 'nostalgia', 'intimacy', and 'knowledge' as best representing the final 39item BRQ Scale. Reliability, construct validity, and cross validity of the construct were verified.

• Smart Structures and Systems
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• 제29권5호
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• pp.747-755
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• 2022

Hierarchical structure parameters, proposed in She-Leveque model, are investigated for velocity components obtained from different flow types over a large range of Reynolds numbers 255 < Re_𝜆 < 720. The values of intermittency parameter 𝛽, with respect to a fixed velocity component, are observed nearly same for all four types of turbulence. The parameter 𝛾, for streamwise velocity components is nearly the same but significantly different for vertical components in different flows. It is also observed that for both parameters, an obvious relation between the longitudinal and transverse components 𝛽_T < 𝛽_L (and 𝛾_T < 𝛾_L) always holds. However, the difference between 𝛽_L and 𝛽_T is found very small in all types of turbulent flows, we studied here. It is evidenced that at low Reynolds numbers, the deviations from K41 scaling are mainly due to the most intense structures and slightly because of more heterogeneous hierarchy of fluctuation structures. However, at higher Reynolds numbers the deviations seem as a consequence of the most intense structures only. Over all, the study suggests that the hierarchy parameter 𝛽 may be consider as a universal constant.

• 전자공학회논문지B
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• 제29B권11호
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• pp.73-84
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• 1992

In this paper, an algorithm for recovering the 3-D shape from a single shaded image is proposed. In the proposed algorithm, by using the relation between the height and surface gradient (p, q), a set of linear equations is derived from the linearized reflectance function. Then the 3-D surface is recovered by employing the conjugate gradient technique. In order to improve the convergence speed of the solution, we also employ the hierarchical basis function and multiresolution images in the algorithm. A method for determining the regularization parameter, which is determined by trial and error in the conventional approach, is also introduced. In addition, the proposed algorithm attempts to recover the 3-D surface without requiring the boundary conditions, making it suitable for a real-time implementation. Simulation results for real image as well as synthetic image are provided to demonstrate the performance of the proposed algorithm.

• 대한음성학회지:말소리
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• 제33_34호
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• pp.71-89
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• 1997

In the framework of linear representation which allows for no internal structure within features, there is no way to represent nonlinear phonological phenomena such as complex segments. This paper shows how we carl solve some problems of the linear feature theory in relation to the hierarchical feature theory. The purpose of this paper is to explain lateral assimilation under hierarchical feature representation. Although arguments for the position of classes of distinctive features have been made the position of (lateral) remains the issue of debate. Sagey(1988) argues that the feature [lateral] is structurally dependent on the root node. In contrast Rice & Avery (1991) put the feature (lated) under the spontaneous voicing. I have discussed previous studies of feature hierarchy and I propose a revised model of feature representation. Within this model I have shown how well feature geometry describes lateralization as feature spreading.

• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2007년도 학술대회 2부
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• pp.541-547
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• 2007

최근 디지털 컨텐츠의 기하급수적인 증가와 함께 사용자가 접하고 관리해야 하는 파일의 양이 급격히 늘어나고 있으며 이에 따라 폴더의 계층구조가 넓고 깊어지는 현상이 나타나고 있다. 현재 파일시스템은 크게 두 가지 형태로 나누어 볼 수 있는데, 사용자 자신에게 의미 있는(semantic) 계층구조(hierarchical structure)형태의 폴더 내에 파일을 저장하는 방식과 Meta Tag를 사용한 방식이다. 이러한 두 가지 파일시스템을 사용자가 인식하고 Conceptual Model을 형성해 가는 과정에 있어서 사용자의 지리적, 역사적 전통 등의 문화적 요소들이 기저에서 작용하게 된다. 본 연구에서는 각기 다른 문화적 성향을 가지고 있는 사용자 간의 File System을 인식하고 구조화하는데 있어서 차이점이 있을 것이라는 가설을 수립 하였고, 가설을 검증하기 위하여 파일 시스템의 사용 행태를 분류하고, 이러한 행태들이 사용자의 문화적 요소에 따라 어떠한 차이를 보이는지에 대하여 페이퍼 프로토타이핑 등의 기법을 사용하여 실험을 설계 하였다. 또한 이러한 연구모델의 검증을 위하여 파일럿 테스트를 진행하여 실효성 있는 가설검증방법에 대한 모델을 제안하고자 한다.

• 전자공학회논문지A
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• 제31A권7호
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• pp.55-62
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• 1994

Interpattern association (IPA) model which the interconnection weight matrix(IWM) is constructed by the association between patterns is effective in similar pattern recognitions. But, if the number of reference patterns is increased, the ability of recognition is decreased. Using a hierarchical recognition algorithm which adopts the tree search strategy, we classified reference patterns into sub-groups by similarity. In IPA model, if input includes random noise we make it converge to reference pattern by means of input includes random noise we make it converge to reference pattern by means of increasing the number of pixels of prohibited state in IWM. In relation to reference patterns the pixel of prohibited state made partially prohibited state of no connected state using which is not included common and feature regions by each reference patterns.

• 한국통신학회논문지
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• 제5권1호
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• pp.83-87
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• 1980

階層構造 COMPUTER Network을 通한 工程制御로 Processing을 分數하여 Fault tolerance를 極大化시키며 複雜하고 多樣한 變數의 相互關係를 週期的으로 監視制御하는 分散制御 Processor JOB은 그 週期와 實行時間으로 定義할 수 있다. 모든 JOB에 대하여 Tree structure인 關係를 가진 subset들로 구성하여 이에 JOB Scheduling Algorithm을 求하여 본 결과 FCFS(Fist Come/First Service)인 Schedule 보다 Processor의 利用에 있어 Loose Time을 減少시키고 處理 可能時間 確保에 有利하였다.

• 한국보육지원학회지
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• 제14권4호
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• pp.109-126
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• 2018

Objective: The purpose of the present study was to explore the moderating role of children's verbal ability in the relation between shyness and teacher-child relationships. Methods: Participants were 200 children, their mothers, and their kindergarten teachers. Children's shyness was rated by their mothers and teachers, and children's verbal ability was measured using the language problem solving ability test. And teachers completed a rating scale in order to examine the teacher-child relationship. The collected data were analyzed using correlations and hierarchical multiple regressions. Results: Children's shyness had a negative relation to close teacher-child relationships. And child's verbal ability was significantly related to teacher-child relationships. Hierachical regression analysis indicted to the interaction of child's shyness and verbal ability predicted close teacher-child relationships. Children's shyness, those who demonstrated the lowest level of child's verbal ability, was significantly associated with close teacher-child relationships. Children's shyness had no significant relation to close teacher-child relationships, especially for the highest level of children's verbal ability. Conclusion/Implications: We suggested that verbal ability training for children might be valuable for shy children in order to buffer the link between shyness and teacher-child relationships.