준혐기 / 호기 생물막공정에 의한 수산물 가공폐수 처리

권순영,유성환,우영국 ( Soon Young Kwon,Sung Whan Yo,Young Gug Woo ) 한국물환경학회 1998 한국물환경학회지 Vol.14 No.1

The combined process of biofilm and suspended growth type for denitrification was used to treat seafood processing wastewater containing high organic and nitrogen compounds. The reactors were made by transparent prexiglass and consisted of the two sequent anoxic and oxic basins for nitrification and denitrification. Wastewater for experiment was supplied from collecting reservoir at industrial wastewater treatment plant twice a week. Concentration of wastewater was ranged in the TCOD of 4,000∼5,500㎎/l, TSS of 3,000∼5,000㎎/l, TKN of 500∼600㎎/l, T-P of 197∼275㎎/l and Temperature of 14℃∼29℃. In order to get stable efficiency, the experiment was operated for 180 days. During experiment the efficiency was shown stably in treating organic and nitrogen compounds. The results were as follows: 1) Most of organic materials were removed at the first anoxic reactor, but nitrogen compounds were removed at the second oxic reactor. 2) The efficiency for organic and nitrogen treatment were 93% and 86%, respectively at the organic volumetric loading rate of 0.75KgTCOD/㎥·d and nitrogen volumetric loading rate of 0.1KgTKN/㎥·d. 3) At predenitrification process, the nitrogen was removed above 90% at the loading rate of 0.3∼1.2KgN/㎥· d, but removed in the range of 20∼60% at 0.15∼0.6KgN/㎥·d at the post-denitrification process. 4) The removal efficiency in the organic volumetric loading rate of 0.75KgTCOD/㎥·d was higher than that of 0.50KgTCOD/㎥·d on the temperature of 26℃∼29℃. Consequently, the denitrification process of this study will get the satisfied effluent below the effluent limit of BOD 30㎎/l if the reactor be designed at the loading rate of 0.6KgBOD/㎥·d and HRT=3days without addition of extra-Carbon source.

수종의 치근면 처치 방법에 따른 상아질 지각 과민 변화 및 표면 특성에 관한 연구

권순영,임성빈,정진형,Kwon, Soon-Young,Lim, Sung-Bin,Chung, Chin-Hyung 대한치주과학회 1999 Journal of Periodontal & Implant Science Vol.29 No.1

Exposure of the root surface due to gingival recession after periodontal surgery, elicit pain response when exposed to mechanical, heat, chemical or osmotic irritation. Especially patients treated with periodontal surgery, show high frequency. There have been reports that the 1 out of 7 patients complains of dentinal hypersensitivity. There have been many studies on the clinical effects of various materials on the treatment of dentinal hypersensitivity. The purposes of this study were to evaluate the effect of sodium chloride and potassium oxalate and to observe the relationship between the dentinal hypersensitivity and surface characteristics such as dentinal tubule size and number. This study included 20 teeth which were scheduled for extraction and had no pulpal disease. These teeth were divided into Root planing group, EDTA group, NaCl group and Oxalate group. Dentinal hypersensitivity is measured by tactile, pressured air and cold water using NRS (Numerical Rating Scales). Teeth were extracted under local anesthesia and each specimen was sectioned to a size about 3 X 5 mm and was examined under the scanning electron microscope (X2,000) The results were as follows, 1. The EDTA group exhibited significantly increased dentinal hypersensitivity comparing with the other groups. 2. The NaCl and Oxalate groups showed significantly reduced dentinal hypersensitivity comparing with the EDTA group. 3. As a method for dentinal hypersensitivity measurement, it was presumed thet tactile sensitivity test was not sensitive method but air blast test and cold water test were adequate method. 4. In a SEM study, the root planing group exhibited amorphous smear layer and showed no dentinal tubule orifice, but the EDTA group showed the large number of dentinal tubules. On the other hand, the NaCl and Oxalate groups did not show exposed dentinal tubules. The NaCl group showed more rough root surface than the EDTA group, and the Oxalate group showed many participates to be presumed as calcium oxalate particle. As the results from this study, root planing couldn't expose the dentinal tubule and NaCl and potassium oxalate occluded exposed dentinal tubule effectively. Dentinal hypersensitivity has close relationship with the exposure of dentinal tubules, especially with it's size and number.

원격전이를 동반한 선양낭포암에 대한 고찰

권순영,김형진,조성동,백승국,정광윤,최건,최종욱,Kwon, Soon-Young,Kim, Hyung-Jin,Jo, Sung-Dong,Baek, Seung-Kuk,Jung, Kwang-Yoon,Choi, Geon,Choi, Jong-Ouck 대한기관식도과학회 2001 大韓氣管食道科學會誌 Vol.7 No.1

Background and Objectives: Adenoid cystic carcinoma (ACC) is an aggressive, often indolent tumor, with a high incidence of distant metastasis (DM). Relatively little has been written about the factor that influence distant spread and subsequent survival because it is uncommon and has protracted clinical course. We attempted to reemphasize the biologic behavior of ACC by investigating the relationship between the clinical features and prognosis. Materials and Methods : We have retrospectively studied 24 determinate patiens who received definitive treatment in our hospital between 1984 and 1995 for ACC in all salivary sites. Inclusion criteria were no prior treatment elsewhere other than excisional biopsy and eligibility for follow-up of at least 5 years. Variables assessed for their impact on distant metastasis included age, gender, size, node status, stage, histologic pattern, locoregional treatment failure. Results : Treatment failure occurred in a total of 16 of 24 determinate Patients (64%), 12 of whom had DM (50%). This was usually associated with locoregional recurrence (8 patients), but DM was the only indication of failure in 4 whose primary tumor was controlled. Of the 12 patients with known DM, the lung was recored as the only involved site in 7 Patients, lung was involved in addition to other sites in 1, bone and liver metastasis occurred in 2 respectively. Disease-free intervals varied from 3 month to 14 years (median 3 years). The only significant factors influencing survival were the size of the primary tumor, locoregional recurrence. Conclusion : The high incidence of DM with locoregional failure confirms the importance of aggressive initial surgery. combined with irradiation, for high-stage tumors or involved surgical margins. Large tumor size and locoregional recurrence, rather than microscopic appearance, were predictive of DM.

반도체 레이저의 이득스위칭을 이용한 UWB 임펄스 발생기 설계

권순영,김범주,박종대,Kwon Soon-young,Kim Bum-in,Park Chong-dae 대한전자공학회 2005 電子工學會論文誌-TC (Telecommunications) Vol.42 No.6

본 논문에서는 Step recovery diode와 반도체 레이저의 이득 스위칭을 이용하여 UWB(Ultra Wide Band) 통신 시스템의 구성요소 중 하나인 임펄스 발생기를 설계하였다. 구현된 임펄스 발생기는 4부분으로 구성하였으며, 1번째는 SRD를 이용하여 반도체 레이저의 이득스위칭을 위한 1차 임펄스 발생기, 2번째는 출력된 1차 임펄스를 이득 스위칭을 조건에 맞추기 위한 전류조절기, 3번째는 1차 임펄스 발생기에서 출력된 임펄스를 반도체 레이저의 이득 스위칭을 이용하여 가우시안 펄스를 발생하는 2차 임펄스 발생기, 4번째는 구현된 가우시안 펄스를 UWB를 위한 가우시안 모노펄스로 변환하는 펄스 변환부로 구성되어 있다. 측정된 가우시안 모노펄스는 시간상에서 360 psec의 펄스폭과 -70 mV에서 +50 mV의 크기를 가지며, 주파수상에서 -41 dBm의 크기와 3.6 GHz의 대역폭을 가짐으로써 UWB를 위한 임펄스에 적합함을 확인하였다. In this paper, we implemented a impulse generator, the one of the part in UWB(Ultra Wide Band) system using step recovery diode(SRD) and gain-switced semiconductor laser. The impulse generator was consisted of four stages; The first stage used SRD to generate the first impulse for gain switching. The second stage controled current for the suitable gain switching condition. The third was the second impulse generator to generate gaussian pulse. For gain switching, the first impulse was applied to semiconductor laser. In the last stage the gain switched impulse was converted into mono-gaussian pulse. The measured mono-gaussian pulse was 360 psec pulse-width and $-70mV \~ +50mV$ amplitude in time domain. In frequency domain its magnitude and bandwidth was, respectively, -41dBm and 3.6GHz. Accordingly, the impulse generator that we suggested was suitable for UWB systems.

학교기반 아동학대 개입 모형 구안을 위한 기초 연구

권순영(Soon Young Kwon),유형근(Hyeong Keun Yu) 학습자중심교과교육학회 2013 학습자중심교과교육연구 Vol.13 No.3

The purpose of this study was to provide the basic direction for constructing a school-based child abuse intervention model. To accomplish this study, first of all, the related literature of child abuse was reviewed and the current child abuse intervention problem was analyzed. The results of analysis about the current child abuse intervention problem is limitations of prevention education, limitations of early detection. lack of professional staff, absence of associates system between the school and outside experts, limitations of the post-intervention. Second, it identified status of the united states and analyzed pros and cons about school based crisis intervention. After applying school based crisis intervention about child abuse, it is problems in the absence of an external team of experts, ambiguity role of experts in each intervention phase, ambiguity role of each expert in cooperation. Based on the results of these analyzes, It is expected to be the basis of developing school-based child abuse intervention model. The results were as follows; school team-oriented intervention, prevention step in the course, collaboration step with external professional organizations. post-intervention phase, specification of the intervention content, clarification role of experts in each intervention phase. 본 연구는 학교를 기반으로 한 효율적인 아동학대 개입모형을 구안하기 위한 기본 방향을 설정하는데 그 목적이 있다. 이를 위해 우리나라의 현행 아동학대 개입의 실태를 분석하여 예방교육의 한계, 조기발견의 한계, 전문 인력의 부족, 교내외 전문가 간의 연계체제 부재, 사후개입의 한계 등의 문제점을 도출하였다. 또한 위기개입 모형에 근거하여 아동학대 문제를 개입하고 있는 미국의 사례를 분석하여 아동학대 전문성을 확보한 외부 전문가 팀의 부재, 각 개입단계별 전문가들의 역할 모호, 교내외 전문가들의 협력 시 각 주체들의 역할의 모호 등과 같은 문제점을 도출하였다. 이러한 분석결과를 바탕으로 학교 기반 아동학대 개입모형 구안의 기본 방향을 교내 전문가 팀이 주도하는 개입, 개입과정에 예방단계, 외부 전문기관과의 협력단계, 사후개입 단계의 포함, 개입단계별 개입내용의 명세화, 개입단계별 전문가 팀 구성원의 개입관련 역할 명료화 등으로 제시하였다.

‘세월호사건’으로 본 교사상에 대한 성찰

권순영(Kwon, Soon Young),전일균(Cheon, Il-Kyoun) 한독교육학회 2015 교육의 이론과 실천 Vol.20 No.3

이 글은 2014년 일어난 세월호사건을 계기로 교사가 맡아야 할 역할 및 책임과 관련지어 오늘날 우리사회에 필요한 교사상을 성찰하는 데 목적이 있다. 오늘날은 경제와 과학의 급격한 발달과 이를 규제할 사회적 장치가 부족한 위험사회이며, 개인의 책임을 개인 자유와 선택으로 극대화하여 해석하는 신자유주의가 팽배해 있다. 이러한 현대사회 속에서 나타나는 대형참사는 학생과 교사의 희생을 양산해오고 있다. 이에 신자유주의 위험사회에서 교사와 학생들을 지킬 수 있는 교사상에 대해 논의하고자 한다. 과거 우리는 사랑의 실천자와 윤리적인 교사, 전문능력이 탁월한 교사, 행정관료로의 교사에만 매여 교사를 바라보고 사랑, 지식전달, 업무에서의 성실자와 순응자로의 역할 즉 ‘가만히 있는 교사’를 요구해 왔다. 그러나 근대화의 자기모순과 소통부재에서 오는 위험사회의 극복은 주체적인 비판력과 대화를 통한 집단지성의 발현으로 가능하다. 따라서 교사의 역할과 책임에 있어 주체성과 비판의식을 공유하고 스스로 실천할 수 있는 ’비판적 실천자’로의 주체적인 교사상에 대한 모색이 필요하다. The case of Sewol ferry in 2014 forces us to reconsider about role and obligation which is regarded as essential to teachers. Accordingly this article focuses on studying today s desirable teacher model. Being rapidly developed by science and economics, pervaded with neoliberalism, individual suffering has been regarded as result of individual choice. In addition, lacking of social systems which control these indiscriminate developments, today can be defined as ‘risk society(Risikogesellschaft)’. Unfortunately, in this risk society, the weak, especially students have become victimized by social or natural catastrophes. Consequently, it is in need of contemplation on desirable teacher model which can protect and take care of them. We ve had stereotypes that teachers should be full of affection to student, professional at lecture, diligent as administrative officer. In other words, we have forced teachers to be obedient and passive men who ‘stay still and don t do anything unexpected’ as long as higher order is not given. However, risk society which self contradiction and absence of communication cause can only be overcome by autonomous criticism and collective intelligence. Therefore, we need to seek the autonomous teacher model as a ‘critical doer’ who can think and do by oneself.

계층별 전력 수준에 따른 3 계층 LDM-MIMO 시스템의 중간 계층 BER 성능 분석

권순영(Soon-Young Kwon),김호재(Ho Jae Kim),배재휘(JaeHwui Bae),허남호(Namho Hur),김형남(Hyoung-Nam Kim) 한국통신학회 2020 한국통신학회 학술대회논문집 Vol.2020 No.2

수요자원 거래시장 참여를 위한 가상발전소 최적 운영 기법에 관한 연구

권순영(Soon-Young Kwon),조형철(Hyung-Chul Jo),조경희(Kyeong-Hee Cho),변길성(Gilsung Byeon),이예림(Ye-Rim Lee),김종율(Jong-yul Kim) 한국통신학회 2023 한국통신학회 학술대회논문집 Vol.2023 No.6

단파 대역에서 Kurtosis를 활용한 블라인드 등화 성능 분석

권순영(Soon-Young Kwon),김호재(Ho Jae Kim),김형남(Hyoung-Nam Kim) 대한전자공학회 2021 대한전자공학회 학술대회 Vol.2021 No.6

마라톤 동호인의 여가열의와 운동중독이 가족기능과 사회적응에 미치는 영향

권순영(Kwon, Soon-Young),임승현(Lim, Seung-Hyun) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.3

A family is regarded as the first society of human begins, family is one of an important primary group in the society and it plays vital role in the socialization of individuals. The main objective of this paper is to study how leisure enthusiasm and exercise addiction of marathon club members influence on families of functions and socialization. A cross sectional study was conducted of adult participants of Daegu International Marathon Championship in 2014. Multiple regression tests have been used to compare the mean scores of leisure enthusiasm and exercise addiction based on different variables under the domain of family functions and socialization. A total of 444 club members were included in this study and data were analyzed by using SPSS 20.0. The main findings are. First, Efficiency and preoccupation were negatively influenced by family cohesion, while efficiency and commitment were positively influenced by family adjustability. Impulsiveness was negatively influenced commitment, while responsibility was positively influenced by efficiency, and interrelationship was positively influenced by efficiency, preoccupation, commitment, and adjustment was positively influenced by preoccupation. Second, Family cohesion, emotional attachment, withdrawal symptom were positively influenced by exercise addiction. Impulsiveness was positively influenced.