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      • KCI등재

        WLAN/WiMAX를 지원하는 삼중대역 안테나 설계 및 제작

        박원영,엄혜경,윤중한,Park, Won-Young,Eom, Hye-Gyeong,Yoon, Joong-Han 한국정보통신학회 2018 한국정보통신학회논문지 Vol.22 No.2

        In this paper, a monopole antenna applicable to WLAN/WiMAX system is designed and fabricated. The proposed antenna is designed to have three lines and one slit based on microstrip feeding to have triple band characteristics. We optimized the lengths and slits of the three lines to obtain the required characteristics for this paper. The proposed antenna has $32.0mm(W2+W3){\times}47.1mm$ (L3+L4+L5+L8) on a dielectric substrate of $42.5mm(W1){\times}52mm(L1){\times}1.0mm$ size. From the fabrication and measurement results, bandwidths of 158 MHz (813 to 971MHz), 630 MHz (2.10 to 2.73GHz) and 1190 MHz (4.83 to 6.02GHz) were obtained based on the impedance bandwidth. The fabricated antenna also obtained the measured gain and radiation pattern in the required triple band. 본 논문에서는 W-LAN/WiMAX 시스템에 적용 가능한 모노폴 안테나를 설계 제작하였다. 제안된 안테나는 마이크로스트립 급전을 바탕으로 세 개의 선로와 하나의 슬릿을 갖도록 구성하여 삼중대역 특성을 갖도록 설계하였다. 세 개의 선로의 길이와 슬릿을 적절하게 조정하여 본 논문에서 요구되는 특성을 얻기 위한 최적화된 수치를 얻었다. 제안된 안테나는 $42.5mm(W1){\times}52mm(L1){\times}1.0mm(t)$의 유전체 기판 위에 $32.0mm(W2+W3){\times}47.1mm$ (L3+L4+L5+L8)의 크기로 제작되었다. 제작 및 측정 결과로부터 158 MHz (813 ~ 971MHz), 630 MHz (2.10 ~ 2.73GHz) 그리고 1190 MHz (4.83 ~ 6.02GHz)의 대역폭을 얻었다. 또한 제작된 안테나의 통해 삼중대역 안테나에서 요구되는 이득과 방사 패턴 특성을 확인하였다.

      • KCI등재

        진동이 무릎 푸쉬업플러스 운동 시 어깨뼈 익상이 있는 성인의 어깨안정근 근활성도와 익상 높이에 미치는 영향

        박원영,구현모,Park, Wonyoung,Koo, Hyunmo 대한통합의학회 2019 대한통합의학회지 Vol.7 No.2

        Purpose : This study was investigated effects of vibration on scapular winging of knee push-up plus exercise. Methods : Twenty-eight female subjects with scapular winging were evaluated after performing knee push-up plus exercise, with or without vibration, three times a week for four weeks. Muscle activation of the serratus anterior and upper trapezius, and the ratio of activation of the upper trapezius to serratus anterior were measured using surface EMG; and scapular winging length was measured by using the caliper. Results : The findings showed that knee push-up plus exercise -with and without- vibration induced a significant increase in muscle activation of serratus anterior (p<.05) and a significant decrease in muscle activation of the upper trapezius (p<.05), the ratio of muscle activation of the upper trapezius to the serratus anterior (p<.05) and scapular winging length (p<.05). There was also a significant difference in muscle activation of the serratus anterior (p<.05) and upper trapezius (p<.05) between control and experimental group at post-test. Conclusion : This study suggests positive clinical effects of knee push-up plus exercise with vibration which enhanced muscle activation of serratus anterior and reduced muscle activation of upper trapezius in person with scapular winging. However, vibration had no effectiveness to improve muscle imbalance between serratus anterior and upper trapezius, and reduce the scapular winging length.

      • KCI등재
      • SCIESCOPUSKCI등재

        성견 1면 골결손부에서 Bioactive Glass가 치주조직 치유에 미치는 영향

        박원영,조규성,채중규,김종관,최성호,Park, Weon-Yeong,Cho, Kyoo-Sung,Chai, Jung-Kiu,Kim, Chong-Kwan,Choi, Seong-Ho 대한치주과학회 1998 Journal of Periodontal & Implant Science Vol.28 No.1

        The ultimate goal of periodontal therapy is the regeneration of periodontal tissue which has been lost due to destructive periodontal disease, and numerous kinds of materials and techniques have been developed to achieve this goal. Bone grafts include autografts, allografts, xenografts and synthetic grafts. Among the synthetic grafts, bioactive glass has been used in dentistry for more than ten years and Fetner reported improved new bone formation and more amount of new attachment after grafting PerioGlas, a kind of bioactive glass, in 2-wall defects of monkeys in 1994. It Is well known that 1-wall defects have less osteogenic potential and more epithelial migration, so we need to study the erect of bioactive glass in 1-wall dejects in dogs. The present study evaluates the effect of bioactive glass on the epithelial migration, alveolar bone regeneration, cementum formation and gingival connective tissue attachment in intrabony detects of dogs. Four millimeter deep and four millimeter wide 1-wall defects were surgically cheated in the mesial aspects of premolars. The test group received bioactive glass with a flap procedure and the control underwent flap procedure only. Histologic analysis after 8 weeks of healing revealed the following results: 1. The height of gingival margin was 1.30{\pm}0.73mm$ above CEJ in the control and $1.40{\pm}0.78mm$ in the test group. There was no statistically significant difference between the two group. 2. The length of epithelial growth (the distance from CEJ to the apical end of JE) was $1.74{\pm}0.47mm$ in the control and $1.12{\pm}0.36mm$ in the test group. These was a statistically significant difference between the two groups (P<0.01). 3. The length of new cementum was $2.06{\pm}0.73mm$ in the control and $2.62{\pm}0.37mm$ in the test group. There was no statistically significant difference between the two groups. 4. The length of new bone was $1.83{\pm}0.74mm$ in the control and $2.39{\pm}0.59mm$ in the test group. There was no statistically significant difference between the two groups. These results suggest that the use of bioactive glass 1-wall intrabony defects has significant effect on the prevention of junctional epithelium migration, but doesn't have any significant effect on new bone and new cementum formation.

      • KCI등재

        시계열을 이용한 실적단가 예측방안에 관한 연구

        박원영,서종원,강상혁,최봉준,Park, Won-Young,Seo, Jong-Won,Kang, Sang-Hyeok,Choi, Bong-Joon 한국건설관리학회 2009 건설관리 : 한국건설관리학회 학회지 Vol.4 No.1

        공공 건설사업의 계약에 있어 합리적이며 적정한 예정가격의 산정이 가장 중요한 요소라 할 수 있다. 공공 공사 예정가격 산정 근거로 사용되어 온 표준품셈과 더불어 실적공사비 제도를 단계적으로 확대 도입키로 했다. 본 논문에서는 과거에 낙찰되었던 계약단가 뿐 아니라 모든 입찰단가 자료를 활용하여 산출한 실적단가의 변동패턴을 분석하여 예측하는 일련의 절차 및 방법론을 제시하였다. 본 연구에서는 신뢰성 있는 자료 확보를 위해 저가입찰 등과 같은 전략적 입찰단가를 제거한 실적단가를 활용하여 시계열 자료를 구성하여 이 시계열을 웨이블릿 분석을 통해 변동 패턴과 추세를 파악하고 신경망을 이용하여 공사비를 예측하는 방안을 주요하게 다루고 있다. 건설 공사비는 매우 다양한 특성을 내포하고 있으므로 그 예측이 어려울 뿐만 아니라 그 오차 또한 매우 클 것으로 예상된다. 이에 본 연구에서는 웨이블릿 변환을 통하여 다양한 특성의 변동을 찾아내어 이를 예측에 이용함으로써 예측력을 높이고자 하였다. 다만 시계열이 매우 단기간의 자료로 구축되어 변동의 양상이 정확하게 분석될 수 없었으나 지속적으로 실적공사비 자료기 축적되어 장기간의 자료를 바탕으로 시계열이 구축된다면 향후 수행될 건설사업의 기획 시 개략적인 공사비 산출에 참고할수 있는 유용한 자료로 활용될수 있을 것이다. The Korea Standard of Estimate which has been used as the only basis of Cost estimate of public construction projects is failed to reflect the fluctuation of current construction cost. Therefore, the government decided to gradually introduce historical construction cost into cost estimate of public construction projects from 2004 and to reduce the use of Korean Standard of Estimate. This paper presents a series of process and the methodology for computing Actual Cost and analyzing the fluctuation patterns based on not only previous contract prices which made a successful bid but also all of the other bid prices. Also, this paper mainly handles a device for extracting strategic bid price such as low price bid for assuring reliable data and for predicting the construction cost which is built by Wavelet Analysis of Time series Analysis data and Neural Network. It is anticipated that the effective use of the proposed process for estimating actual unit cost would make the cost estimation more current and reasonable.

      • KCI등재

        자율성 및 상호작용성을 위한 에이전트 아키텍처 설계

        박원영,박수용 한국정보과학회 2003 정보과학회논문지 : 소프트웨어 및 응용 Vol.30 No.10

        As the next significant software abstraction, software agents have generated lots of excitements in recent years because of its promise as a new paradigm for conceptualizing, designing, and implementing software systems. This promise is particularly attractive for creating software that operates in environments that are distributed, open, and complex, such as the Internet. The effort of developing agent systems have, however, suffered from lack of generalized agent architecture because of various properties of an agent and nonexistence of a standard agent architecture. An agent architecture is an important criterion in order to not only identify agents in their domain but also determine the software architecture of the system. The major contribution of the work described here is an object-oriented design of an agent architecture that addresses fundamental properties, which are autonomy and interaction. Object-oriented design method is used for identifying the internal modules of an agent architecture and organizing correlation between the modules are identified. 최근 몇 년간 소프트웨어 에이전트가 소프트웨어 공학의 새로운 추상화 단위로서 연구되고 있다. 자율성, 적응성, 협력성 등의 속성을 갖는 에이전트는 특히 분산 시스템, 오픈 시스템, 복잡한(complex) 시스템 등의 영역에서 시스템을 구성하는 새로운 추상화 단위로서 이해되고 있다. 그러나 에이전트에 관한 개념과 특성에 관한 연구가 꾸준히 진행되고 있음에도 불구하고, 에이전트의 다양한 속성과 에이전트 아키텍처에 대한 표준화의 부재로 인해 현재까지 일반화된 에이전트 아키텍처가 제시되지 않고 있다. 에이전트 아키텍처는 시스템의 분석과 설계 시 에이전트 추출의 기준을 제시하고, 전체 소프트웨어 아키텍처를 결정하는 중요한 요소가 된다. 또한 규정된 에이전트 아키텍처는 재사용 가능한 산출물로서 세부 기능을 확장할 수 있는 구조적 틀을 제공하고 개발 공정 전체를 효율적으로 이끌 수 있다. 본 논문에서는 이 같은 연구의 필요성을 바탕으로 객체 지향 설계 방법을 이용하여, 자율성 및 상호작용성을 위한 에이전트 아키텍처 설계 방안을 제시하고자 한다. 자율성과 상호작용성을 에이전트의 일반적인 속성으로 규정하고, 객체 지향 설계 방법을 이용하여 에이전트 아키텍처 설계 방안을 제시한다.

      • KCI등재후보

        - 재출판 - 산후 폐동맥 고혈압으로 인한 급사

        박원영,조갑래,허기영 대한법의학회 2014 대한법의학회지 Vol.38 No.3

        We present here a brief literature review and a case study of postpartum pulmonaryarterial hypertension, a rare and progressive disease with a high maternal mortalityrate. The patient, a 32-year-old woman, presented with dyspnea and shivering immediatelyfollowing an uncomplicated vaginal delivery. The patient had no remarkableindividual or familial history. She died 4 hours after her delivery, and an autopsyrevealed atherosclerosis of the main pulmonary arteries and characteristic plexiformlesions on the lung. The remaining organs showed no remarkable pathology. Wereported pulmonary arterial hypertension associated with pregnancy as the cause ofdeath.

      • KCI등재

        條例의 法理에 관한 硏究

        朴源永 동아대학교 법학연구소 1985 東亞法學 Vol.- No.1

        As local autonomies are assured of the constitution, by-law is indeed rightfully needed and is an important function as it serves to be a source for the realization of local autonomies. The scope of the establishment of by-law revolves round a legal issue, that is, about what matters to a local autonomy which is able to establish by-laws with reference to the legislative power of the National Assembly. It is reasonable to inquire into the relation between by-law and laws. By-law is existent as a self-establishment of local autonomies in relation to law, under the constitution. At present, the relation between by-law and laws interpreted, has been inquired into. The criterion being set upon the establishment of by-law asserts that it must abide within the bounds of laws and decrees. (Constitution Article 118) The tendency of taking into serious account the formal order of law may make the interpretation and operation of autonomous legislative power, assured by constitution, insignificant. Today, with rapid economic growth, urbanization and regional (local) diversity, it is difficult to deal with matters pertaining to the welfare of local residents and management of properties in accordance with standardized law and decrees. Moreover, the role of self-government concerning administrative demand is increasing. Thus, it is necessary for us to inquire into the nature of local autonomies, keeping in mind the history of civilisation. The intent of local autonomies, which the constitution guarantees does not concern itself on the nature of personal rights in which the local government is being confronted with. On the other hand, it serves as a link to a chain of democratic state structures and a service to promote the welfare of citizens with the state. Thus, local autonomies are a kind of public system whereby public power from the sovereignty of the people under self-responsibility, independant from state, is being excised. I believe that the constitution must no doubt adhere to the significance of this system and guarantee the essential contents of it as public power. What are the essential contents of a local autonomous system? For instance, to deny the establishment of penal regulations entirely, not to authorize the proviso of Article 7 in the Local Government Act and establishment of by-law for administrative affairs and so on, is infringement upon the essential contents of by-law establishment. However, what the state law prescribes for individual local administrative affairs is not in violation with the essence of by-law establishment. In cases where the state law does not prescribe regulations or in conditions where there is difficulty in administering to the welfare of citizens due to the insufficiency of restrictions by state law, it is, therefore, rightful that local autonomies provide those necessary regulations. By-law acts as a local autonomous legislature, its concept being the declaration of residents′ intentions through a local assembly. The structure and contents vary, depending upon each field and province. Formalism, centering around traditional state law, may have to be amended in connection with the local autonomous legislature. By-law is certainly an important means of local administration and must therefore be prudently applied as a means of realization in local autonomies. Moreover, it determines the rights and duties of residents. If such by-law is imposed only as a measure to express the demands of residents without considering the legal meaning or political declaration of a special party, it is, then an abuse, with the aim of deceiving residents. The significance of local autonomies is not the struggle of political ideologies but endeavors to secure the services and needs of residents. Such an endeavor needs to be implemented on a wider scale in the Local Government within the constitution enforced. The scope of by-law established by local autonomies is in the expansion of local autonomous capability, balance of local development and efficiency of resource exploitation. In reality, however, by-law is not immune to problems. First and foremost, residents feel that the right of self-government with their own intentions in mind, lacks substantial guarantee. Secondly, by-laws, enforced by the local autonomies, is indeed, too limited and thirdly, any local distinguishing feature is liable to damage due to the fact that by-law is established within the bounds of law. Therefore, there lies a great necessity for further study in the improvement and development of local self-government.

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