• Journal of Korean Biological Nursing Science
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• 제17권4호
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• pp.306-314
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• 2015

Purpose: The purpose of this study was to evaluate symptoms, depression and quality of life in colorectal cancer patients who underwent stoma reversal, and to assess the factors related to their quality of life. Methods: A descriptive study was conducted on 125 colorectal cancer patients who underwent stoma reversal in a tertiary hospital in Korea. Data were collected using the Korean versions of the European Organization for Research and Treatment of Cancer-Quality of Life Core 30 and Colorectal Cancer Specific Questionnaire 38 (EORTC QLQ-C30 and CR38), and the Hospital Anxiety-Depression Scale. Data were analyzed using descriptive statistics, t-test, one-way ANOVA, Pearson's correlation, and multiple regression analyses. Results: Participants experienced sexual problems, difficulties in defecation, and nausea/vomiting. About twenty-two percent of the patients were depressed and the mean score for global quality of life was $64.40{\pm}19.43$. The multiple regression showed that social and cognitive functioning, depression, and the location of the anastomosis were the important factors that made contributions to the quality of life in colorectal patients with stoma reversal. Conclusion: Our results suggest that symptom management and emotional support should be incorporated into nursing interventions to improve the quality of life in colorectal patients with stoma reversal.

• 한국자기학회:학술대회 개요집
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• 한국자기학회 2008년도 Asian Magnetics Conference
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• pp.137.2-137.2
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• 2008

• 한국과학교육학회지
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• 제33권2호
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• pp.501-510
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• 2013

창의적 문제 해결 과정의 핵심은 독특하고 다양한 아이디어의 생성이다. 따라서 아이디어의 생성을 어려워하는 학생들에게 이를 도와줄 수 있는 구체적 방안 마련이 요구되며, 이에 역발상적 사고 기법을 고려해 볼 수 있다. 이에 이 연구에서는 역발상적 사고 기법을 기반으로 한 아이디어 생성 과정의 특징을 대학생을 대상으로 조사하였다. 연구 결과, 역발상적 사고기법은 학생들의 관점 전환을 유도하며, 새로운 아이디어의 산출을 도왔다. 이에 학생들의 아이디어 산출을 지원해 주는 사고 틀로서 역발상적 사고 기법의 가능성을 확인할 수 있었다. 그러나 역발상적 사고가 좀더 효과적으로 이루어지기 위해서는 학생들이 산출된 아이디어에 대한 이론적 판단이나 가치 개입, 경험 등으로 인한 편견을 배제할 수 있도록 지도할 필요가 있다. 또한 학생들이 역발상적 아이디어에 대한 다른 사람들의 반대나 비판 등을 감수하면서 새로운 아이디어를 실행시키고자 하는 과제집착력이나 용기 등을 함양할 수 있는 방안 마련도 요구된다.

• Ocean and Polar Research
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• 제36권4호
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• pp.395-405
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• 2014

A 570 cm-long sediment core was retrieved at $9^{\circ}57^{\prime}N$ and $131^{\circ}42^{\prime}W$ in 5,080 m water depth from the northeast equatorial Pacific and its stratigraphy was established with $^{10}Be/^9Be$ and paleomagnetic measurements. Successive AF demagnetization reveals eight geomagnetic field reversals. In the reference geologic time scale, the eight reversal events correspond to an age of about 4.5 Ma. However, $^{10}Be/^9Be$-based age yields 9.5 Ma at a depth of 372 cm. Such a large discrepancy in determined ages is attributed to an extremely low sedimentation rate, 0.4 mm/kyr on average, of the study core and resultant loss or smoothing of geomagnetic fields. The composite age model reveals a wide range in the sedimentation rate - varying from 0.1 to 2.4 mm/kyr. However, the sedimentation rate shows systematic variation depending on sedimentary facies (Unit II and III), which suggests that each lithologic unit has a unique provenance and transport mechanism. At depths of 110-80 cm with a sedimentation rate of about 0.1 mm/kyr, ancient geomagnetic field reversal events of at least a 1.8 Myr time span have not been recorded, which indicates the probable existence of a hiatus in the interval. Such a sedimentary hiatus is observed widely in the deep-sea sediments of the NE equatorial Pacific.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2002년도 International Meeting on Information Display
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• pp.445-448
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• 2002

New banana-shaped achiral compounds, 1,3-phenylene bis [4-{4-(7-octenyloxy)phenyliminomethyl}benzoate](PBOEB), 1,3-phenylene bis [4-{3-fluoro-4-(7-octenyloxy)phenyliminomethyl}benzoate] (PBFOEB), 1,3-phenylene bis [4-{4-(10-undecyloxy)phenyliminomethyl}benzoate](PBEUB), and 1,3phenylene bis [4-{3-fluoro-4-(10-undecyloxy)phenyliminomethyl}benzoate](PBFEUB) were obtained by general synthetic methods. PBOEB and PBFOEB having the octenyloxy groups such as $-(CH_2)_6CH=CH_2$ showed ferroelectric switching, and their values of spontaneous polarization on reversal of an applied electric field were 120 nC/$cm^2$ and 225 nC/$cm^2$, respectively. PBEUB and PBFEUB having the undecyloxy groups such as $-{CH_2)_9CH=CH_2$ showed antiferroelectric switching, and their values of spontaneous polarization on reversal of an applied electric field were 120 nC/$cm^2$ and 140 nC/$cm^2$, respectively. We could obtain ferroelectric and antiferroelectric phases by controlling the number of carbon atom in alkenyloxy chains of bent-core molecules.

• 조명전기설비학회논문지
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• 제28권5호
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• pp.92-97
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• 2014

The SRM is a doubly salient, singly excited machine. The torque is developed by the tendency for the magnetic circuit to adopt a configuration of minimum reluctance, i.e. for the rotor to move into in line with the stator poles and to maximize the inductance of the coils excited. It is common practice to combine them into groups of poles which are excited simultaneously; for example, 8/6 SRM (8 stator poles and 6 rotor poles) for 4 phases, 6/4, 12/8 SRM for 3 phases, 4/2, 6/3 SRM for 2 phases. Small number of phases in two-phase SRMs allows more cost savings with regards to the switching devices in the converter. The stator back irons of two phase 6/3 SRM and C-core 4/3 SRM does not experience any flux reversal as the flux is in the same direction whether phase A or B is excited. In this study, the similarities, the differences, and structural characteristics between the two SRMs was studied, The magnetic analysis also has been carried out by the finite element method analysis (FEM).

• 조명전기설비학회논문지
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• 제20권1호
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• pp.100-110
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• 2006

자속 역전식 전동기(Flux Reversal Motor: FRM)는 고정자 치 표면에 영구자석을 갖는 구조이며 회전자가 돌극 형태이므로 관성이 적고 기계적으로 강인한 특성을 지녀서 고속기로의 적용이 가능하다. 그러나 단상 FRM은 구조적 특징으로 인하여 영구자석의 감자가 쉽게 일어나며, 고속 구동시 스위칭 주파수가 커짐에 따라 철손이 크게 상승하게 된다는 한계점을 지닌다. 본 논문에서는 유한요소법을 이용하여 단상 FRM의 설계 파라미터가 전동기의 감자특성에 주는 영향을 고찰해보았고 그 해결 방안을 제시하였으며 철손 특성을 분석하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.31-33
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• 2007

Cost reduction requires lowering number of power devices used in the converter driving SRM. This is quite feasible in SRM drive systems than in other drive systems. This paper deals with design, analysis, and simulation of such a novel two phase SRM. A novel two phase SRM has high performance, self-starting capability, high efficiency, and low manufacturing cost. Additionally, the stator back iron does not experience any flux reversal as the flux is in the same direction whether phase A or B is excited leading to a greater reduction in core losses. The magnetic analysis and design considerations of the novel two phase SRM have been obtained by the finite element analysis (FEM). Experimental verification of the machine design is provided to correlate with analysis and simulation studies.

• Earthquakes and Structures
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• 제7권5호
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• pp.861-875
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• 2014

This paper studies the response of seismic behavior of reinforced concrete exterior beam-column joints under reversal loading with different anchorages and joint core details. The joint core was detailed without much confinement (group-I) and/or with proposed X-cross bars in the core (group-II). The beam longitudinal reinforcement's anchorages were designed as per ACI 352 (headed bars), ACI 318 (conventional $90^{\circ}$ bent hooks) and IS 456 ($90^{\circ}$ bent hooks with extended tails). The nonlinear finite element analysis response of the beam-column joints was studied, along with initial and progressive cracks up to failure. The experimental and analytical results were compared and presented in this paper to make more scientific conclusions.

• PNF and Movement
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• 제7권4호
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• pp.37-43
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• 2009

Purpose : The purpose of this study was to evaluate the effect of core stability training at deep abdominal muscle for balance control of hemiplegic patient. Method : The subject of this study was a 47-year-old man with right hemiplegia. He was treated five times a week for three weeks with core stability training at deep abdominal muscles. Evaluation tool was used Functional reach test(FRT), timed up and go test(TUG) and one leg standing for stroke patients. Result : The FRT distance increase, TUG time decrease, one leg standing time increase core stability training at deep abdominal muscles for right hemiplegia improved was the ability for maintain balance. Posture and control of trunk stability are changing posture, and so which showed significant improve of total balance control. Conclusion : The result of this study showed that core stability training at deep abdominal muscles is an effective treatment for balance control. Therefore, it could be considered as a treatment method in the rehabilitation of stroke patient with poor postural control and imbalance, although further studies are needed.