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이정열(Jeongyeol Lee),이지형(Jehyung Lee),이성웅(Sungwoong Lee),고현(Hyun Ko),조용호(Yongho Cho) 한국추진공학회 2011 한국추진공학회 학술대회논문집 Vol.2011 No.11
고체추진기관의 초음속 제트 속에서는 다양한 소음들이 발생된다. 본 연구에서는 로켓 모타의 배기가스에 물을 분사하고, 디퓨져 및 스택을 설치하여 초음속 제트에서 발생되는 소음을 억제할 수 있는 장치를 설계 및 제작하는 기술을 확보하는데 있다. 물분사 소음디퓨저를 연소시험용 로켓 모타에 적용하여 약 20dB의 소음저감효과를 얻었다. In the supersonic jet of a solid rocket motor, various noise is investigated. The purpose of this study is to attain and evaluating a design and manufacturing technique of the SRM noise reduction. In this study, the water is injected into the supersonic jet of the SRM to reduce the noise. Furthermore, the diffuser and stack are installed to suppress the SRM noise. Through the SRM ground tests, the noise is reduced approximately 20dBA with application of the diffuser/stack with water injection.
A Study on Characteristics of Costume Based on North American Life Styles by Region
Jeongyeol Lee,Jaejung Lee,Eulyo Yun (사)한국디지털디자인협의회 2007 (사)한국디지털디자인협의회 conference Vol.2007 No.1
The North American region is a place where many different cultures coexist within a large territory. As a result this study aims to categorize North American regions based on culture and lifestyle and to classify them by different styles that inspire designs in the fashion industry. Therefore, the most representative life styles by region in the North American region were categorized into 6 style such as New England Style, Mountain Style, Southern Style, Western Style, Hawaiian Style, and Heartland Style, observed the difference in lifestyle by regions, and evaluated how such styles are applied in modern fashion. According to the results of the study, characteristics of costume based on each regional lifestyle are as follows. The New England Style placed importance on classic American style of the north eastern region and styles that reflect conservative nature could be seen most frequently. As American country style with the background of a food basket, clothes with simple styles quilting that use varying colors are characteristics of the Heartland Style. As a region of historical racial discrimination and the slave system, the southern style is expressed in flapper style of the jazz culture that focuses on fancy styles of the upper class and African Americans. With strong characteristics of a region with desolate desert as its state, the exquisite charm of detail such as western shirts and various articles with embroidery stand out in costume style of the western style. As a style that exudes toughness of nature, Navajo Indian patterns are frequently used in mountain style. As a region that cherishes the unique local traditions of the natives, styles that use bold colors and natural themes and motif are characteristic of the Hawaiian style.
A Study on Characteristics of Costume Based on North American Life Styles by Region
Jeongyeol Lee,Jaejung Lee,Eulyo Yun 한국디자인지식학회 2007 한국디자인지식학회 Conference Vol.2007 No.8
The North American region is a place where many different cultures coexist within a large territory. As a result this study aims to categorize North American regions based on culture and lifestyle and to classify them by different styles that inspire designs in the fashion industry. Therefore, the most representative life styles by region in the North American region were categorized into 6 style such as New England Style, Mountain Style, Southern Style, Western Style, Hawaiian Style, and Heartland Style, observed the difference in lifestyle by regions, and evaluated how such styles are applied in modern fashion. According to the results of the study, characteristics of costume based on each regional lifestyle are as follows. The New England Style placed importance on classic American style of the north eastern region and styles that reflect conservative nature could be seen most frequently. As American country style with the background of a food basket, clothes with simple styles quilting that use varying colors are characteristics of the Heartland Style. As a region of historical racial discrimination and the slave system, the southern style is expressed in flapper style of the jazz culture that focuses on fancy styles of the upper class and African Americans. With strong characteristics of a region with desolate desert as its state, the exquisite charm of detail such as western shirts and various articles with embroidery stand out in costume style of the western style. As a style that exudes toughness of nature, Navajo Indian patterns are frequently used in mountain style. As a region that cherishes the unique local traditions of the natives, styles that use bold colors and natural themes and motif are characteristic of the Hawaiian style.
육군 지휘관급 장교의 복무만족도에 미치는 영향요인 분석
이정열(Jeongyeol Lee) 육군사관학교 화랑대연구소 2021 한국군사학논집 Vol.77 No.2
The Defense Reform 2.0, which is currently being pursued by the Korean military, involves a large-scale soldier reduction. The commander of each unit is experiencing difficulties in carring out their mission due to the reduction of soldiers. As a result, the commanders face a difficult situation in which may decline their job satisfaction. Therefore, the purposes of this study are to find factors for affecting the job satisfaction and to provide a policy direction for enhancing the job satisfaction of officers(captain or higher). This study consists of three phases. In the first phase, theoretical reviews are conducted on job satisfaction and organizational immersion, the Defense Reform 2.0 and the realities of the Army, and the causes related to job satisfaction of officers. In the second phase, a survey on job satisfaction of Army commander-level officers is conducted for data collection. In the third phase, analysis (frequency, correlation, multiple regression) is conducted on influencing factors of job satisfaction. The results of the study are as follows. First, gender and length of service affected job satisfaction among demographic factors. Second, promotion, soldiers image, interest, marital stability, specialized knowledge, employment after discharge affected job satisfaction among job property factors.
이정열(Jeongyeol Lee) 육군사관학교 화랑대연구소 2021 한국군사학논집 Vol.77 No.1
Branch selection is a process in which officers who have been trained with a great deal of time and cost are able to exercise their abilities, and receive the opportunity for self-realization. It is also an opportunity for the Army to develop its branches. However, branch selection actually occurs when cadets are not aware of the field situation. Furthermore, branch selection is currently based solely on fragmentary education by branch officers. Therefore, it is difficult for cadets to properly consider their aptitude and abilities. Thus, the purpose of this study is to provide a guide for branch selection for the new generation of cadets and policy implications for the army as a whole. This study was conducted in two phases. In the first phase, two surveys examined the criteria for selecting branches and the perceptions of each branch, and quantitatively analyzed the priorities and preferences among the cadets through the Analytic Hierarchy Process(AHP). In the second phase, the branch perceptions of field experts were investigated and the differences in perception between cadets and experts were verified as statistically significant through ANalysis Of VAriance(ANOVA). Also, implications were presented by comparing the perceptions of cadets who hava no experience in each branch with those of field experts.
병력감축에 관한 육군 간부의 인식에 미치는 영향요인 분석
이정열 ( Lee Jeongyeol ),정대규 ( Jeong Daegyu ) 한국국가전략연구원 2020 한국국가전략 Vol.5 No.1
현재 한국 육군은 세계적인 흐름에 발맞추어 급변하는 안보환경 및 미래의 전쟁양상에 대응하기 위해 국방개혁 2.0을 추진하고 있고, 이러한 국방개혁 2.0과 관련된 가장 큰 변화는 병력감축이라고 할 수 있다. 하지만 국방개혁 2.0 이전까지 추진했던 육군의 병력감축은 구조변화 중심의 외형적 변화에만 집중한 결과 소기의 목적을 달성하지 못하였다. 그리고 불행하게도, 육군의 한 연구에 의하면 한국군의 병력감축은 그 성공과 관련된 불안정한 요소들을 가지고 있다고 하였다. 이에 본 연구에서는 병력감축에 관한 육군 간부들의 인식에 영향을 미치는 요인을 실증적으로 분석하여 그 대안을 제시하였다. Recently, the Korean Army is pushing for the National Defence Reform 2.0 in accordance with the global trend. And the biggest change related to the National Defence Reform 2.0 is the soldiers reduction. However, the former national defense reform implemented by the Korean Army have failed to achieve its purpose because the Army only focused on appearance changes. And unfortunately, according to a study, the soldiers reduction of the Korean Army has unstable factors related to its success. Therefore, the purpose of the study is to identify influencing factors on Army executives' perception of the Soldiers Reduction based on a human-relation perspective.