• 제목/요약/키워드: Research Domains

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Study on the Surface Magnetic Domain Structure of Thin-Gauged 3% Si-Fe Strips using Scanning Electron Microscopy with Polarization Analysis

  • Chai, K.H.;Heo, N.-H.;Na, J.g.;Lee, S.R.;Woo, j.s.
    • Journal of Magnetics
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    • 제3권2호
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    • pp.44-48
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    • 1998
  • Scanning Electron Microscopy with Polarization Analysis (SEMPA) was used to image the surface magnetic domain structure of the 100 ${\mu}{\textrm}{m}$ thick 3% Si-Fe sheet. The thin-gauged 3% Si-Fe strips with magnetic induction ($B_{10}$) from 1.98 to 1.57 Tesla were prepared via conventional metallurgical processes including melting, hot-and cold-rolling, intermediate annealing and final annealing. Using SEMPA, it was observed that the $B_{10}$ (1.98 T) Tesla sample was almost composed of 180$^{\circ}$ stripe domains which are parallel to rolling direction. On the other hand the 3% Si-Fe sheet with $B_{10}$ (1.57 T) Tesla was composed of large 180$^{\circ}$stripe domains that are slanted about 30$^{\circ}$to the rolling direction and complex magnetic domain structures like tree and zigzag pattern. The 180$^{\circ}$stripe domains, which covered a major part of the sample, had (110)<001> Goss texture parallel to the rolling direction. The domain walls between 180$^{\circ}$stripe domains were the conventional Bloch type walls. On the other hand, the 90$^{\circ}$domains, which covered minor part on edge of the sample, were observed in (200) grains. The domain walls between 90$^{\circ}$domains were the Neel type walls. In high magnification, the elliptical singularity at the Neel walls was clearly observed.

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Un-met Supportive Care Needs of Iranian Breast Cancer Patients

  • Abdollahzadeh, Farahnaz;Moradi, Narges;Pakpour, Vahid;Rahmani, Azad;Zamanzadeh, Vahid;Mohammadpoorasl, Asghar;Howard, Fuchsia
    • Asian Pacific Journal of Cancer Prevention
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    • 제15권9호
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    • pp.3933-3938
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    • 2014
  • Background: Assessment of supportive needs is the requirement to plan any supportive care program for cancer patients. There is no evidence about supportive care needs of Iranian breast cancer patients. So, the aims of present study were to investigate this question and s predictive factors. Materials and Methods: A descriptive-correlational study was conducted, followed by logistic regression analyses. The Supportive Care Needs Survey was completed by 136 breast cancer patients residing in Iran following their initial treatment. This assessed needs in five domains: psychological, health system and information, physical and daily living, patient care and support, and sexuality. Results: Patient perceived needs were highest in the health systems and information (71%), and physical and daily living (68%) domains. Logistic regression modeling revealed that younger participants have more un-met needs in all domains and those with more children reported fewer un-met needs in patient care and support domains. In addition, married women had more un-met supportive care needs related to sexuality. Conclusions: The high rate of un-met supportive care needs in all domains suggests that supportive care services are desperately required for breast cancer patients in Iran. Moreover, services that address informational needs and physical and daily living needs ought to be the priority, with particular attention paid to younger women. Further research is clearly needed to fully understand supportive care needs in this cultural context.

Comparative Modeling and Molecular Dynamics Simulation of Substrate Binding in Human Fatty Acid Synthase: Enoyl Reductase and β-Ketoacyl Reductase Catalytic Domains

  • John, Arun;Umashankar, Vetrivel;Krishnakumar, Subramanian;Deepa, Perinkulam Ravi
    • Genomics & Informatics
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    • 제13권1호
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    • pp.15-24
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    • 2015
  • Fatty acid synthase (FASN, EC 2.3.1.85), is a multi-enzyme dimer complex that plays a critical role in lipogenesis. This lipogenic enzyme has gained importance beyond its physiological role due to its implications in several clinical conditions-cancers, obesity, and diabetes. This has made FASN an attractive pharmacological target. Here, we have attempted to predict the theoretical models for the human enoyl reductase (ER) and ${\beta}$-ketoacyl reductase (KR) domains based on the porcine FASN crystal structure, which was the structurally closest template available at the time of this study. Comparative modeling methods were used for studying the structure-function relationships. Different validation studies revealed the predicted structures to be highly plausible. The respective substrates of ER and KR domains-namely, trans-butenoyl and ${\beta}$-ketobutyryl-were computationally docked into active sites using Glide in order to understand the probable binding mode. The molecular dynamics simulations of the apo and holo states of ER and KR showed stable backbone root mean square deviation trajectories with minimal deviation. Ramachandran plot analysis showed 96.0% of residues in the most favorable region for ER and 90.3% for the KR domain, respectively. Thus, the predicted models yielded significant insights into the substrate binding modes of the ER and KR catalytic domains and will aid in identifying novel chemical inhibitors of human FASN that target these domains.

Development of Centering Method for Automatic Generation of a Quadrilateral Mesh

  • Choi, Jinwoo
    • International Journal of CAD/CAM
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    • 제11권1호
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    • pp.11-17
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    • 2011
  • A new method has been developed in this paper for automatic quadrilateral mesh generation for a two-dimensional domain. The method is named 'centering method' because it centers a point at the domain and then divides it into sub-domains using cutting lines from the center point. Each of the cutting lines is selected based on the criterion using the angles between the boundary of the domain and the cutting line. The decomposition of the domain into sub-domains is repeated until every subdomain has four or six nodes. Pre-defined splitters are used to divide six-node domains into quadrilateral elements depending on their configuration and presence on the boundary of the initial domain. Arbitrary domains are meshed as examples to verify the robustness of the new method.

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전문직 취업주부의 역할갈등과 갈등대처전략 (Work/Family Role Conflicts and Coping Strategies of Employed Wives.)

  • 이기영;구은영
    • 가정과삶의질연구
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    • 제10권2호
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    • pp.99-112
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    • 1992
  • This research was designed to illuminate that work domains and family domains are not separated but interacting spheres and to suggest efficient coping strategies than alleviate work/family role conflicts. The subjects of this study were 395 employed professional wives living in Seoul. Korea. Survey methods were questionnaires. Data analysis strategies were percentile, frequency, one-way-anova and multiple classification analysis. The results were as follows; 1)Employed wives experienced time-based conflicts and strain-based role conflicts. This finding supports the scarcity approach that multiple roles inevitably create strain. 2) Individual, family and work-related variables were predictors of work/family role conflicts. This findings indicate that work domains and family domains cannot be regraded as separated spheres. 3) Employed wives tried to meet all the given roles demands not by reducing role responsibilities, but by increasing the efficiency of role performance. This finding reflects the characteristics of employed wives who try to perform successfully all the responsibilities. 4)The negative correlation of coping strategies and work/family role conflicts suggests that strategies can function effectively in alleviating the work/family role conflicts.

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Domain-Adaptation Technique for Semantic Role Labeling with Structural Learning

  • Lim, Soojong;Lee, Changki;Ryu, Pum-Mo;Kim, Hyunki;Park, Sang Kyu;Ra, Dongyul
    • ETRI Journal
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    • 제36권3호
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    • pp.429-438
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    • 2014
  • Semantic role labeling (SRL) is a task in natural-language processing with the aim of detecting predicates in the text, choosing their correct senses, identifying their associated arguments, and predicting the semantic roles of the arguments. Developing a high-performance SRL system for a domain requires manually annotated training data of large size in the same domain. However, such SRL training data of sufficient size is available only for a few domains. Constructing SRL training data for a new domain is very expensive. Therefore, domain adaptation in SRL can be regarded as an important problem. In this paper, we show that domain adaptation for SRL systems can achieve state-of-the-art performance when based on structural learning and exploiting a prior model approach. We provide experimental results with three different target domains showing that our method is effective even if training data of small size is available for the target domains. According to experimentations, our proposed method outperforms those of other research works by about 2% to 5% in F-score.

Formation and Annealing Effect of Tolanethioacetate Self-Assembled Monolayers on Au(111)

  • Jeong, Young-Do;Han, Jin-Wook;Kim, Nak-Joong;Lee, Young-Il;Lee, Chang-Jin;Hara, Masahiko;Noh, Jaeg-Eun
    • Bulletin of the Korean Chemical Society
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    • 제28권12호
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    • pp.2445-2448
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    • 2007
  • Self-assembled monolayers (SAMs) were formed by adsorption of thioacetyl-terminated tolanethioacetate (TTA) on Au(111) in a 0.5-mM ethanol solution after one day immersion at room temperature. Molecular-scale STM imaging revealed that the TTA SAMs were composed of two mixed phases; an ordered phase with small domains describing a ( × 2 )R30° structure and a disordered phase. Interestingly, after annealing the precovered TTA SAMs on Au(111) at 90 °C for 1 h, the small ordered domains grew unidirectionally, resulting in the formation of unique rod-like domains, which were assigned a ( × 2 )R7° structure. These results will be very useful in understanding the formation and thermal behavior of TTA SAMs on gold surfaces.

한국의 아동 웰빙 지표 구축을 위한 기초 연구 : 아동 웰빙 지표의 영역과 세부 지표를 중심으로 (The Construction of the Domains and Indicators Measuring and Monitoring Children's Well-Being in Korea)

  • 공인숙;김선영
    • 아동학회지
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    • 제33권1호
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    • pp.183-203
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    • 2012
  • While efforts to measure and monitor children's well-being have gained increasing recognition across the OECD, there has been relatively little research on the subject of indicators of children's well-being in Korea. This study was undertaken in order to develop the domains and indicators which can be used to measure the quality of life of Korean children from birth to age 17 and to put forward a possible well-being index for Korean children. The 35 indicators of well-being were grouped into eight domains and were designed for this study, using previous research on key child indicators for Korea and the child well-being index in foreign countries, such as the FCD-Land Index, Kids Count, the index of child well-bing in the European Union and OECD area. These domains are composed of the following : economic well-being, health, education, spiritual/emotional well-being, children's relationships, civic participation, safety/risk behavior, and housing and environment. The establishment of a Korean children's well-being index requires access to and use of national statistical data analyzed annually by the government as well as a general consensus regarding such issues as scope and its indicators.

Scanning Force Microscope에 의한 (001) PMN-x%PT 단결정의 도메인 구조에 대한 연구 (Investigation of Domain Structure in (001) PMN-x%PT Crystals by Scanning Force Microscope)

  • 이은구;이재갑
    • 한국재료학회지
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    • 제19권6호
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    • pp.300-304
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    • 2009
  • The domain structures of annealed (001)-oriented $Pb(Mg_{1/3}Nb_{2/3})O_3-x%PbTiO_3$ (PMN-x%PT) crystals for x = 10, 20, 30, 35, and 40 at% were investigated by Polarized Optical Microscopy (POM) and Scanning Force Microscopy (SFM) in the piezoresponse mode. Both Polar Nano-Domains (PND) and long strip-like domains were clearly observed. The results also showed how the domain structure changed between phases with an increasing x in the PMN-x%PT crystals and the domain hierarchy on various length scales ranging from 40 nm to 0.1 mm. Distorted pseudo-cubic phase (x < 20%) consisted of PNDs that did not self-assemble into macro-domain plates. The rhombohedral phase (x = 30%) consisted of PNDs that began to self-assemble into colonies along preferred {110} planes. The monoclinic phase (x = 35%) consisted of miniature polar domains on the nm scale, whereas, the tetragonal phase (x = 40%) consisted of {001} oriented lamella domains on the mm scale that had internal nano-scale heterogeneities, which self-assembled into macro-domain plates oriented along {001} the mm scale.

일 종합전문병원의 전문간호사 업무 분석 (An Analysis of the Role of Nurse Specialists in the General Hospital)

  • 박광옥;김종경;정재심
    • 한국간호교육학회지
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    • 제13권2호
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    • pp.246-256
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    • 2007
  • Purpose: The purpose of this study was to explore the role of nurse specialist in the general hospital, and to provide basic data for the role management of nurse specialist. Method: The subjects were 38 staff nurses who worked in a medical, surgical, or other department in one general hospital. Survey tools were developed with criteria for a clinical nurse specialist by American Nurses Association(1986), Korean Nurses Association(2001), Kim(2005)'s research, and the nurse specialists' self job description. Validity of the tool was examined by 5 clinical nursing experts and nurse specialists. Data analysis was done by using SPSS Win 12.0 program. Result: The results of domains for the job of nurse specialists were 61.6% for direct clinical practice, 21.7% for education, 5.7% for consultation, 5.2% for management, 5.2% for research, and 1.1% for other domains. The results for the large classifications in nurse specialists domains were 57.6% for direct nursing practice in direct clinical practice domain, 89.1% for patient education in education domain, 57.5% for medical consultation in consultation domain, 57.5% for medical research in research domain, and 39.2% for documentation in management domain. Conclusion: This research revealed that direct clinical practice domain was higher than the other domains of research, education, and management. Discussion and development about the nurse specialist's various roles needs to be addressed on a continual basis.

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