• 융합보안논문지
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• 제22권5호
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• pp.127-134
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• 2022

호국군은 비록 짧은 역사였지만 대한민국 예비군제도의 효시라는 점에서 큰 의미를 가진다. 이러한 호국군에 대한 연구는 그동안 소극적으로 진행되어 왔다. 그나마도 진행된 연구는 역사적 관점에서 단편적인 서술에만 국한되어 왔고 호국군의 성격을 규명하지는 못하였다. 따라서 본 연구에서는 호국군이 존재했던 시대적 배경을 살펴본 다음 법적·제도적, 군사적, 정치적 관점의 새로운 시선에서 호국군의 성격을 규명하고자 노력하였다. 연구결과를 종합해보면 호국군은 법률적 지지를 받으면서 전시에 대비한 효율적인 제도로 탄생하였다. 그리고 선진국형 모병제도인 지원병제를 채택했다는 점, 호국군만의 별도 사관학교를 통해 장교를 양성했으며 후방지역작전에 기여했다는 점은 군사적 측면에서 높이 평가된다. 반면, 호국군을 창설하는 과정부터 정치권과 비군사단체가 결탁하였다는 점은 부정적이다. 끝으로 본 연구를 계기로 6.25전쟁 이전에 존재했던 예비전력에 관한 연구가 좀 더 활발해지기를 기대한다.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2017년도 공동학술발표회
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• pp.3-3
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• 2017

• 융합보안논문지
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• 제13권5호
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• pp.77-87
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• 2013

동원은 전시 또는 이에 준하는 국가비상사태시에 국가의 모든 인적, 물적 자원을 효율적으로 통제, 관리 운영하는 국가의 권력 작용으로 정의된다. 따라서 동원태서의 완비는 전쟁에서 승리하는 것 뿐만 아니라 전쟁을 억제하고 평시 국가 경제를 발전시키는 원동력이 될 수 있다. 동원제도의 연구방향은 민 관 군의 통합된 계획과 집행에 의해 이루어져야 신속성과 효율성이 증대될 수 있기 때문에 법적, 제도적 정비를 통하여 발전되어야 할 것이다. 통일이 되더라도 동원제도에 대한 관심과 연구는 지속적으로 필요하다.

• 해양환경안전학회지
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• 제24권1호
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• pp.18-28
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• 2018

한국의 해군은 점증하는 대양해군의 역량강화에 따라 충분한 항해능력의 확보와 우수한 병력을 확보하는 것이 요청되고 있다. 그러나 병력자원의 확보측면에서는 최근 전체적인 인구감소 추세에 따라 병력의 효율적인 활용이 요구되고 있다. 이 연구에서는 가용자원의 확보를 위해 국방민간인력으로서 선원을 활용검토하고 미국의 해상운송사령부를 벤치마킹하였다. 검토결과 해상운송사령부를 설립하여 작전지원함정을 운영할 경우 해군의 전투능력이 확장이 가능하다. 게다가 기존에 구축된 해양대학 등 국가 교육시스템과 민간의 해기자원을 활용하는 것이 가능하다. 또한 승선근무예비역 제도와 지정국제선박을 보다 효율적으로 운영할 수 있을 것이다.

• Journal of Forest and Environmental Science
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• 제33권4호
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• pp.257-269
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• 2017

The study has piloted to find the Pattern of species distribution along environmental variables and disturbance in Raghunandan Reserve Forest. Shaltila and Shahapur beat of Raghunandan Hill Reserve Forest are situated in Chunarughat sub-district of Habiganj district between $24^{\circ}5^{\prime}-24^{\circ}10^{\prime}N$ and $91^{\circ}25^{\prime}-91^{\circ}30^{\prime}E$ under the Sylhet Forest Division. The Environmental variable and vegetation data were collected from 30 sample plots from each forest beat by using arbitrary sampling without preconceived bias. 51 species were found from Shaltila and 34 species found in Shahapur forest beat. Thus the dataset continued with total 85 species in 60 samples. To determine the relationships between tree species distribution and environmental variables, Canonical Correspondence Analysis (CCA) ordination method were performed separately for two forest beat. In CCA ordination, tree species showed significant variation along environmental gradients in terms of soil organic matter and disturbances (p<0.05) in the case of Shaltila forest. Potassium has a significant relationship with axis 1 and axis 2 in this forest. But Shahapur forest showed no significant relationship between species and environmental variables. Phosphorus has a significantly negative relationship with axis 2 in this forest. Disturbance played as a critical role of this forest thus influencing the distribution of species. The study showed that the distributions of tree species are strongly influenced by disturbance and organic matter in Shaltila and Shahapur forest beat showed no significant relationship between species and environmental variables. Future research should be included more environmental variables with larger study area that identify the most important environmental forces which will drive by species distribution findings in this forest.

• Coupled systems mechanics
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• 제4권1호
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• pp.1-18
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• 2015

The state-based peridynamics is considered a nonlocal method in which the equations of motion utilize integral form as opposed to the partial differential equations in the classical continuum mechanics. As a result, the enforcement of boundary conditions in solid mechanics analyses cannot follow the standard way as in a classical continuum theory. In this paper, a new approach for the boundary condition enforcement in the state-based peridynamic formulation is presented. The new method is first formulated based on a convex kernel approximation to restore the Kronecker-delta property on the boundary in 1-D case. The convex kernel approximation is further localized near the boundary to meet the condition that recovers the correct boundary particle forces. The new formulation is extended to the two-dimensional problem and is shown to reserve the conservation of linear momentum and angular momentum. Three numerical benchmarks are provided to demonstrate the effectiveness and accuracy of the proposed approach.

• Interaction and multiscale mechanics
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• 제7권1호
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• pp.525-542
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• 2014

The state-based peridynamics is considered a nonlocal method in which the equations of motion utilize integral form as opposed to the partial differential equations in the classical continuum mechanics. As a result, the enforcement of boundary conditions in solid mechanics analyses cannot follow the standard way as in a classical continuum theory. In this paper, a new approach for the boundary condition enforcement in the state-based peridynamic formulation is presented. The new method is first formulated based on a convex kernel approximation to restore the Kronecker-delta property on the boundary in 1-D case. The convex kernel approximation is further localized near the boundary to meet the condition that recovers the correct boundary particle forces. The new formulation is extended to the two-dimensional problem and is shown to reserve the conservation of linear momentum and angular momentum. Three numerical benchmarks are provided to demonstrate the effectiveness and accuracy of the proposed approach.

• Smart Structures and Systems
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• 제20권3호
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• pp.311-328
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• 2017

The characteristics of boundary layers have significant effects on the aerodynamic forces and vibration of the wind turbine blade. The incorporation of active trailing edge flaps (ATEF) into wind turbine blades has been proven as an effective control approach for alleviation of load and vibration. This paper is aimed at investigating the effects of external trailing edge flaps on the flow pattern and velocity distribution within a boundary layer of a NREL 5MW reference wind turbine, as well as designing a new type of velocity sensors for future validation measurements. An aeroelastic-aerodynamic simulation with FAST-AeroDyn code was conducted on the entire wind turbine structure and the modifications were made on turbine blade sections with ATEF. The results of aeroelastic-aerodynamic simulations were combined with the results of two-dimensional computational fluid dynamic simulations. From these, the velocity profile of the boundary layer as well as the thickness variation with time under the influence of a simplified load case was calculated for four different blade-flap combinations (without flap, with $-5^{\circ}$, $0^{\circ}$, and $+5^{\circ}$ flap). In conjunction with the computational modeling of the characteristics of boundary layers, a bio-inspired hair flow sensor was designed for sensing the boundary flow field surrounding the turbine blades, which ultimately aims to provide real time data to design the control scheme of the flap structure. The sensor element design and performance were analyzed using both theoretical model and finite element method. A prototype sensor element with desired bio-mimicry responses was fabricated and validated, which will be further refined for integration with the turbine blade structures.

• 융합보안논문지
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• 제22권1호
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• pp.141-148
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• 2022

한국의 ROTC 제도는 유능한 초급장교 충원과 평시부터 예비전력 확보를 위해 1961년에 미국으로부터 도입되었다. 하지만 2000년대 접어들어 저출산에 따른 학령인구 및 병역자원의 감소, 병 복무기간까지 단축되는 획득환경의 변화로 지원율이 점점 하락하는 심각한 위기에 직면하게 되었다. 따라서 본 연구는 이러한 획득환경의 변화와 그에 따른 지원율 감소의 원인을 분석하여 조직편성 및 운영체계를 중심으로 ROTC 제도 개선방안을 제시하고자 하였다. 연구방법은 국내‧외 문헌연구를 통해 미국과 한국의 ROTC 제도에 관한 사례 간 비교기법을 적용하였다. 이론적 측면에서는 지식기반사회에서 조직의 성과달성과 비교경쟁우위 확보를 위해 기업경영에 적용하고 있는 전략적 인적자원관리를 이론적 준거로 삼았다.

• 경영과학
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• 제30권1호
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• pp.125-137
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• 2013

The U.S. Army is capable and ready to deploy full-spectrum armed forces anywhere in the world as we have seen in Iraq and Afghanistan. This commitment is within the realm of logistics support that the readiness to support MRE(Meal Ready to Eat), according to the environment where the operation is on going. ROKA(Republic Of Korea Army) proceeds with the program to develop and reserve various MRE under the assumption of distinctive warfare operating environment. This study investigates to determine the amount of MRE consumption within various operating environment and details are as follows. First we ponder the concept of MRE and identified problems of the existing program. Second we also establish feeding rations by the types of MRE that is the base for calculation. Third we introduce MRE consumption algorithm and formula. Fourth and last we have applied our model to the program and analyzed the results. The present state of the estimation didn't reflect various warfare operating environment. Therefore we simulates theater wargame model to determine the consumption under various warfare operating environment. The result of this study is anticipated to contribute largely to the force enhancement as it mirrors of every circumstances of operating environment.