• 한국전기전자재료학회논문지
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• 제25권4호
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• pp.294-297
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• 2012

In this work, local oxidation behavior in phosphorous ion-implanted 4H-SiC has been investigated by using atomic force microscopy (AFM). The AFM-local oxidation (AFM-LO) has been performed on the implanted samples, with and without activation anneal, using an applied bias (~25 V). It has been clearly shown that the post-implantation annealing process at $1,650^{\circ}C$ has a great impact on the local oxidation rate by electrically activating the dopants and by modulating the surface roughness. In addition, the composition of resulting oxides changes depending on the doping level of SiC surfaces.

• Journal of Contemporary Eastern Asia
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• 제15권2호
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• pp.177-190
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• 2016

One of the main objectives of this paper is to provide insight to understand the effect of natural disasters on local government finance. That is, to analyze local governments' sales tax revenues after Hurricane Ike. Three Texas cities are examined: League City, Pearland, and Sugarland. Based on data collected from the Texas Comptroller's Office and the US Census, we found local governments experience a short-term increase in sales tax revenues and a long-term decline after the hurricane strike the region. On average, a major hurricane has a two-year impact on local government economy. The findings are essential for practitioners because in order to have a prosperous recovery after natural disasters, public managers have to prepare financially for short term changes in their sales tax revenues.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2010년도 춘계학술발표대회
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• pp.377-380
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• 2010

This paper proposes texture descriptor for texture classification called Local Neighbor Differences (LND). LND is a high discriminating texture descriptor and also robust to illumination changes. The proposed descriptor utilizes the sign of differences between surrounding pixels in a local neighborhood. The differences of those pixels are thresholded to form an 8-bit binary codeword. The decimal values of these 8-bit code words are computed and they are called LND values. A histogram of the resulting LND values is created and used as feature to describe the texture information of an image. Experimental results, with respect to texture classification accuracies using OUTEX_TC_00001 test suite has been performed. The results show that LND outperforms LBP method, with average classification accuracies of 92.3% whereas that of local binary patterns (LBP) is 90.7%.

• 한국경제지리학회지
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• 제27권1호
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• pp.1-17
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• 2024

본 연구는 김치제조업체 D기업에 원료배추를 공급하는 산지유통인과 배추 주산지 농가 간 계약생산을 대상으로 사례 계약생산의 주체별 역할을 규명하고 계약생산에 의한 계약지역의 농업 변화를 설명하는 것을 목적으로 한다. 연구 결과 계약지역에서 배추농업을 주도하는 핵심 주체는 농업인으로부터 산지유통인으로 변화되고 있음이 확인되었다. 첫째, 산지유통인은 주산지 배추농업 의사결정의 핵심 주체로서 생산의 전과정을 총괄하면서 계약지역 배추농업 전반을 통제함에 따라 농업인의 역할을 대체하고 있다. 둘째, 산지유통인은 계약농가의 후반기 농작업을 전담함에 따라 배추 주산지에서 농업인에 버금가는 핵심적인 영농 주체로 부상하고 있다. 이는 계약 물량 확보 및 품질 관리에 대한 산지유통인의 요구와 고령농의 증가 및 인력 부족 문제를 겪고 있는 주산지 농가의 요구가 맞아 떨어진 결과라 할 수 있다.

• 전기학회논문지
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• 제61권3호
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• pp.373-379
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• 2012

This paper presents a fault location algorithm based on the adaptively estimated value of the local sequence source impedance for faults on a parallel transmission line. This algorithm uses only the local voltage and current signals of a faulted circuit. The remote current signals and the zero-sequence current of the healthy adjacent circuit are calculated by using the current distribution factors together with the local terminal currents of the faulted circuit. The current distribution factors consist of local equivalent source impedance and the others such as fault distance, line impedance and remote equivalent source impedance. It means that the values of the current distribution factors can change according to the operation condition of a power system. Consequently, the accuracy of the fault location algorithm is affected by the two values of equivalent source impedances, one is local source impedance and the other is remote source impedance. Nevertheless, only the local equivalent impedance can be estimated in this paper. A series of test results using EMTP simulation data show the effectiveness of the proposed algorithm. The proposed algorithm is valid for a double-circuit transmission line system where the equivalent source impedance changes continuously.

• 산경연구논집
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• 제14권10호
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• pp.23-33
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• 2023

Purpose: This paper provides a literature review of both qualitative and quantitative research on service delivery in urban local authorities as portrayed in literature and offers more insight into the concept thereby developing and facilitating an improved understanding of service delivery and proffering strategies for improving service delivery in urban local authorities. Research design, data and methodology: The study adopted a desktop research methodology. Empirical and theoretical research and articles which are relevant to service delivery in urban local authorities are reviewed and analysed. Only secondary information gathered through those articles and research is used to analyse and build literature review on service delivery in urban local authorities. Results: a literature review of both qualitative and quantitative research on service delivery in urban local authorities as portrayed in literature proffering strategies for improving service delivery in urban local authorities. Conclusions: It is evident that service delivery is an area which needs more attention, especially in developing countries. The service delivery environment is also changing rapidly, calling for strategies to match such changes. This paper facilitates an improved understanding of service delivery, proffering strategies for improving service delivery in urban local authorities. These strategies are essential in improving service delivery challenges.

• 농촌계획
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• 제23권2호
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• pp.67-74
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• 2017

Migration is defined as the movement of people between residential places, and represents interactions between regions. Changes in migration involve changes in both the number of migrants toward/from regions and migration patterns across regions. However, most migration studies have focused only on the change in migrants, while no empirical study captures changes in migration patterns. In this paper, I present a function using the cosine similarity to measure changes in migration patterns, and apply it to 2001-2016 migration data of Korea. The results show that the migration patterns of Korea shifted in 2007, resulting in two distinct clusters. Local areas experienced various migration pattern changes despite few changes in the number of migrants.

• Journal of Acupuncture Research
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• 제19권3호
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• pp.88-94
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• 2002

Objective : This study was done to observe the effects on the themal changes of Hominis Placenta acupuncture therapy. The objectives are as follows; If there are remarkable local thermal changes between pre- and post- Hominis Placenta acupuncture therapy on D.I.T.I. or not. If there are those, we examine how long its changes are maintained, the adequate interval and clinical applications of therapy. Methods : To study the local thermal changes in therapy, D.I.T.I. was used. Thermal temperatures were measured pre- and post-therapy (1 hour, 1st day, 2nd day, and 7th day). The study group was divided into two groups. One was HP(Hominis Placenta) group(N=20), the other was NS(Normal Saline) group. The Hominis Placenta acupuncture was injected into 4 points (Fengmen(風門: $B_{12}$), Feishu(肺兪: $B_{13}$), Fufen(附分: $B_{41}$), Pohu(魄戶: $B_{42}$)) by 0.05ml. Results : The following results were obtained. 1. PLACENTA HOMINIS is the dried placenta of a healthy woman, used to warm the kidney for impotence, infertility, lack of lactation, and replenish Gi(氣), blood, vital essence for emaciation, hectic fever, night sweating in consumptive diseases. 2. Hominis Placenta acupuncture therapy has effects on invigoration of vital energy (補氣, 益氣), nourishing blood (養血), and tonifying the essence (補精). 3. Hominis Placenta acupuncture therapy is effective at tissue regeneration, antibody formation, increasing immunity, hormone-like effects. So, it is clinically used in osteoporosis and facial nerve paralysis. 4. There was no significant dermatothermal changes at NS group, but HP group had remarkable changes between operated and non-operated area in post-therapy 1hour. But there were not any change on 1, 2, and 7th day.

• Radiation Oncology Journal
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• 제37권2호
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• pp.117-126
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• 2019

Purpose: The purpose of this study was to characterize and evaluate the clinical significance of volume changes of soft tissue sarcomas during radiation therapy (RT), prior to definitive surgical resection. Materials and Methods: Patients with extremity or pelvis soft tissue sarcomas treated at our institution from 2013 to 2016 with RT prior to resection were identified retrospectively. Tumor volumes were measured using cone-beam computed tomography obtained daily during RT. Linear regression evaluated the linearity of volume changes. Kruskal-Wallis tests, Mann-Whitney U tests, and linear regression evaluated predictors of volume change. Logistic and Cox regression evaluated volume change as a predictor of resection margin status, histologic treatment response, and tumor recurrence. Results: Thirty-three patients were evaluated. Twenty-nine tumors were high grade. Prior to RT, median tumor volume was 189 mL (range, 7.2 to 4,885 mL). Sixteen tumors demonstrated significant linear volume changes during RT. Of these, 5 tumors increased and 11 decreased in volume. Myxoid liposarcoma (n = 5, 15%) predicted decreasing tumor volume (p = 0.0002). Sequential chemoradiation (n = 4, 12%) predicted increasing tumor volume (p = 0.008) and corresponded to longer times from diagnosis to RT (p = 0.01). Resection margins were positive in three cases. Five patients experienced local recurrence, and 7 experienced distant recurrence, at median 8.9 and 6.9 months post-resection, respectively. Volume changes did not predict resection margin status, local recurrence, or distant recurrence. Conclusion: Volume changes of pelvis and extremity soft tissue sarcomas followed linear trends during RT. Volume changes reflected histologic subtype and treatment characteristics but did not predict margin status or recurrence after resection.

• 한국경제지리학회지
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• 제24권3호
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• pp.350-364
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• 2021

이 연구의 목적은 전남 화순군을 사례로 지자체장 교체에 따른 군정목표의 변화를 살펴보고, 민선 6기 지자체장이 설정한 지역발전 비전과 군정목표와 지역발전정책 성과를 분석한 것이다. 민선 1기부터 6기까지 화순군정의 슬로건과 목표는 지자체장의 잦은 교체로 계속 변경되었다. 한편 민선 6기 화순군정의 슬로건은 '명품화순 행복한 군민'으로 설정하였고, 군정 목표는 신뢰받는 행정, 함께하는 복지, 매력있는 문화, 활력있는 농촌, 꿈을 심는 교육, 생동하는 경제 등 6개로 설정하였다. 민선 6기의 군정 성과는 계획목표 대비 90% 달성률을 나타냈다.