• Smart Structures and Systems
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• v.16 no.4
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• pp.579-591
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• 2015

This paper investigates a magnetoelectric (ME) vibration energy harvester that can scavenge energy in arbitrary directions in a plane as well as wide working bandwidth. In this harvester, a circular cross-section cantilever rod is adopted to extract the external vibration energy due to the capability of it's free end oscillating in arbitrary in-plane directions. And permanent magnets are fixed to the free end of the cantilever rod, causing it to experience a non-linear force as it moves with respect to stationary ME transducers and magnets. The magnetically coupled cantilever rod exhibits a nonlinear and two-mode motion, and responds to vibration over a much broader frequency range than a standard cantilever. The effects of the magnetic field distribution and the magnetic force on the harvester's voltage response are investigated with the aim to obtain the optimal vibration energy harvesting performances. A prototype harvester was fabricated and experimentally tested, and the experimental results verified that the harvester can extract energy from arbitrary in-plane directions, and had maximum bandwidth of 5.5 Hz, and output power of 0.13 mW at an acceleration of 0.6 g (with $g=9.8ms^{-2}$).

• Smart Structures and Systems
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• v.21 no.1
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• pp.123-137
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• 2018

Structural monitoring is the most important part of the construction and operation of the embankment dams. Appropriate instruments selection for dams is vital, as inappropriate selection causes irreparable loss in critical condition. Due to the lack of a systematic approach to determine adequate instruments, a framework based on three comparable Multi-Attribute Decision Making (MADM) methods, which are VIKOR, technique of order preference by similarity to ideal solution (TOPSIS) and Preference ranking organization method for enrichment evaluation (PROMETHEE), has been developed. MADM techniques have been widely used for optimizing priorities and determination of the most suitable alternatives. However, the results of the different methods of MADM have indicated inconsistency in ranking alternatives due to closeness of judgements from decision makers. In this study, 9 criteria and 42 geotechnical instruments have been applied. A new method has been developed to determine the decision makers' importance weights and an aggregation method has been introduced to optimally select the most suitable instruments. Consequently, the outcomes of the aggregation ranking correlate about 94% with TOPSIS and VIKOR, and 83% with PROMETHEE methods' results providing remarkably appropriate prioritisation of instruments for embankment dams.

• The Research Journal of the Costume Culture
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• v.7 no.1
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• pp.68-81
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• 1999

This paper makes a report of Shaman\`s ritual performed among Korean resiednts in Japan as socio-historical facts, and this also examines the symbolic meanings of Shamans\` costumes. The results are as follows ; 1) At the ritual of Jungsip-Wang Maji, Shamans wear Gwandae, Kunbok, Jangsam, Durumaki, and Chima-jugori. These costumes show that their wearers are priests and gods at the same time. 2) The reason why Simbang performs the ritual in different costumes at different Jaechas is that each object-god needs different costumes to represent its different character. 3) Shamans\` instruments consist of musical instruments and other instruments. Among the musical instruments are such percussions as Buk, Jing, Janggo and Sulsae. Among other insttruments are Sindo, Sanban and Yoryung. 4)Shamans think that the musical instruments have magic powers to drive out minor demons and invite gods. Sindo, Sanban and Yoryung are thought to be the symbolic instruments representing god\`s will.

• Research in Community and Public Health Nursing
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• v.29 no.2
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• pp.155-169
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• 2018

Purpose: The purpose of this study is to review the quantitative research literature on measuring caring in order to identify overall trends in measuring caring. Methods: Fifty three papers were selected from four databases including RISS4U, DBpia, KISS, and Korea Med. Results: The number of measuring caring papers has increased since 2000. Approximately 60 % of the total papers were descriptive and correlative design researches with convenience sampling. Jean Waston's theory was the most popular conceptual framework, but much of the research tended to be conducted without any conceptual framework. In that kind of research, 'caring' terms were used without definition. The most frequently used term for the concept of caring was nurses' caring behaviors. Also, 'nurses' was one of the most popular subjects. Thirty six measuring caring instruments were used. Twenty were developed in foreign countries and translated into Korean. The others were developed originally in Korean. Interpersonal Caring Technique - Communication Skills Scale, based on the interpersonal process model, was the most frequently used tool. Among the translated instruments, Coates' Caring Efficacy Scale was the most popular. Some instruments were used without validation. Conclusion: These results provide basic data on measuring caring and indicate directions for further research. In particular, validation studies of measuring caring instruments are needed.

• Restorative Dentistry and Endodontics
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• v.44 no.1
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• pp.2.1-2.6
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• 2019

Objectives: The purpose of this research was to identify the top 10 most-cited articles on the management of fractured or broken instruments and to perform a bibliometric analysis thereof. Materials and Methods: Published articles related to fractured instruments were screened from online databases, such as Web of Science, Scopus, PubMed, and ScienceDirect, and highly cited papers, with at least 50 citations since publication, were identified. The most-cited articles were selected and analysed with regard to publication title, authorship, the journal of publication, year, institution, country of origin, article type, and number of citations. Results: The top 10 most-cited articles were from various journals. Most were published in the Journal of Endodontics, followed by the International Endodontic Journal, and Dental Traumatology. The leading countries were Australia, Israel, Switzerland, the USA, and Germany, and the leading institution was the University of Melbourne. The majority of articles among the top 10 articles were clinical research studies (n = 8), followed by a basic research article and a non-systematic review article. Conclusions: This bibliometric analysis revealed interesting information about scientific progress in endodontics regarding fractured instruments. Overall, clinical research studies and basic research articles published in high-impact endodontic journals had the highest citation rates.

• Proceedings of the KACD Conference
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• 2001.05a
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• pp.259-259
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• 2001

;A new root canal instrument and instrumentation technique: a preliminary report. Cleaning and shaping the root canal system has been and continues to be a challenge for even the most experienced endodontist. Curved. narrow canals. in particular. cause difficulties for the beginner as well as the specialist. A new instrument designed to incorporate new concepts was developed to ameliorate the problems in cleaning and shaping root canal systems. This new instrument has been given the name of SW (Senia and Wildey). The new SW instrument uses controlled right and left rotational forces. This motion was used to clean and shape simulated root canals in plastic blocks and root canals in extracted teeth. Instrumentation appeared to be easier. faster. and more precise than with conventional instruments. especially in curved canals where there was remarkable reduction of canal transportation. A mechanical version of the SW instrument was also developed. It was used to flare the coronal portion of the root canal system. Wildey WL. Senia ES., Oral Surg Oral Med Oral Pathol1989 Feb:67(2):198-207 Another look at root canal instrumentation. Several aspects of root canal instrumentation need additional research. Various factors must be considered in an analysis of instrumentation of the root canal system: the dentin that is cut: the technique used to cut it: the design of the instruments: the material and manufacturing process used to make the instruments: the irrigant used during the procedure: and the anatomic configuration of the root canal system. An analysis of these factors clearly indicates that existing root canal instruments and techniques are less than ideal and. in fact. do not accomplish what is expected of them. Root canals must be properly. but. at the same time. destructive and unnecessary removal of dentin should be kept to a minimum. The Flex-R and Canal Master instruments were developed to address some of the shortcomings of existing instruments and techniques. More scientifically based research is needed to fully evaluate these new instruments and techniques and to develop future instruments. Wildey WL; Senia ES. Montgomery S., Oral Surg Oral Med Oral Pathol1992 Oct:74(4):499-50799-507

• Journal of the military operations research society of Korea
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• v.2 no.1
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• pp.127-143
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• 1976

The purpose of this thesis is to study the optimal arrangement of aircraft instrument panels through the human factors approach. Human factors engineering is the process of effectively fitting the human component to the machine component in any man-machine system. The human factors. are especially important to an aircraft pilot who must constantly shift his attention between the instrument panel within the cockpit and the surrounding area of the aircraft. The preliminary part of this study is to find the general patterns of the Korean pilot's eye movements during their various flying maneuvers, and which instruments require the most attention while in flight. It is assumed that all pilots have a general pattern of eye movement when observing the aircraft instrument panel and that an optimum arrangement would be to minimize the eye travel distance between instruments. In this thesis the arrangements of instruments is taken to be the independent variable and the eye travel distance between instruments the dependent variable. la order to compile the information necessary for this study, sixty Korean Air Force pilots were interviewed and requested to complete information forms. These information forms listed various flying maneuvers and listed each instrument used on the instrument panel. The compilation of the information on these completed forms listed the instruments most frequently used by the pilots. The second part of this study was to determine the optimum instrument arrangement. It was necessary to study the various number of possible arrangements of instruments depending upon the number of instruments involved. Therefore, these instruments are grouped by two major functions, The flight instruments were subdivided into three groups, and the engineering instruments were subdivided into six groups. With this subdivision we arrive at the possible number of arrangements of 4,320. Through the simulation method, total eye travel distance for each of these 4,320 arrangements is calculated and the arrangement which appears to be of optimum distance between the most frequently used aircraft instruments is determined. The results of this study indicate that the optimum distance between instruments would be 33,028cm and that the corresponding distance of the instrument panel now being used is 34,288cm. Therefore, an increased efficiency of $3.8\%$ would be realized if the existing aircraft instrument panel were re-arranged according to layout proposed in this thesis.

• Knowledge Management Research
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• v.9 no.1
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• pp.23-38
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• 2008

This study develops a framework and instruments to diagnose the current knowledge management(KM) status of an organization and to suggest future KM implementation directions. Based on the comprehensive review of KM literature and KM case studies, we derive three main aspects(strategic, social and technical aspect) and seven critical factors(KM strategy, knowledge worker, organizational strucuture, organizational culture, KM processe, organizational knowledge, and information technology) for the successful KM implementation. The instruments developed in this study include every specific measurement items of each critical success factor, which are expected to help not only suggest a context-sensitive KM strategy but also evaluate current KM status of a designated organization. By introducing two dimensions of KM evaluation(effectiveness and necessity), a more holistic and contingent view of KM can be assured. Academic contributions as well as practical implications are discussed. Study limitations and future research directions are also provided.

• Applied Microscopy
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• v.45 no.3
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• pp.131-134
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• 2015

Here we show how by processing energy dispersive X-ray spectrometry (EDS) data obtained using highly sensitive, new generation EDS detectors in the AZtec LayerProbe software we can obtain data of sufficiently high quality to non-destructively measure the number of layers in two-dimensional (2D) $MoS_2$ and $MoS_2/WSe_2$ and thereby enable the characterization of working devices based on 2D materials. We compare the thickness measurements with EDS to results from atomic force microscopy measurements. We also show how we can use electron backscatter diffraction (EBSD) to address fabrication challenges of 2D materials. Results from EBSD analysis of individual flakes of exfoliated $MoS_2$ obtained using the Nordlys Nano detector are shown to aid a better understanding of the exfoliation process which is still widely used to produce 2D materials for research purposes.

• Child Health Nursing Research
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• v.22 no.4
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• pp.265-278
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• 2016

Purpose: The aim of this study was to conduct a systematic review and to describe the characteristics of child abuse screening instruments. Methods: Articles regarding the development of a child abuse screening instrument were investigated using the systematic review method. A literature search using the keywords "child and abuse or maltreatment and instrument or screening tool" in English, and "child," "abuse," and "instrument" in Korean, was conducted of material published in PubMed, PsycINFO, CINAHL, SCOPUS, ERIC, and RISS. Database and bibliographic searches, and quality appraisal using the Quality Assessment of Diagnostic Accuracy Studies tool that included systemic reviews, yielded 17 records. Results: Key elementary child abuse screening instruments were developed for physical, psychiatric, affective and sexual and child neglect assessment. The instruments' target populations were children at home and in institutions. The reviewed instruments had the advantage of diagnosing past, concurrent, and indirectly, potential child abuse. Conclusion: The results of this study demonstrate that child abuse screening instruments are available for screening and for assessment of abused children in various circumstances. This review of child abuse screening instruments offers evidence for the acceptable use of optimal psychometric tools for child abuse assessment and provides guidelines for child health nursing practice.