• International Journal of Computer Science & Network Security
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• 제23권12호
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• pp.167-174
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• 2023

Electronic educational environments in the conditions of quarantine restrictions of COVID-19 have become a common phenomenon for the organization of distance educational activities. Under the conditions of Russian aggression, Ukrainian proof of their use is unique. The purpose of the article is to analyze the role of electronic educational environments in the process of training applicants for higher education in Ukraine in the realities of a large-scale war. General scientific methods (analysis, synthesis, deduction, and induction) and special pedagogical prognostic methods, modeling, and SWOT analysis methods were used. In the results, the general properties of the Internet educational platforms common in Ukraine, the peculiarities of using the Moodle and Prometheus platforms, and an approximate model of the electronic learning environment were discussed. The reasons for the popularity of Moodle among Ukrainian universities are analyzed, but vulnerable elements related to security are emphasized. It was also determined that the high cost of Prometheus software and less functionality made this learning environment less relevant. The conclusions state that the military actions drew the attention of universities in Ukraine to the formation of their own educational platforms. This is especially relevant for technical and military institutions of higher education.

• 문화기술의 융합
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• 제10권6호
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• pp.437-441
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• 2024

본 연구는 혼란스럽게 사용되고 있는 인지전, 심리전, 정보전의 개념을 정리하고, 전쟁에 적용하는 방법을 연구하였다. 인지전, 심리전, 정보전은 각각 인간의 인지과정, 심리, 정보를 작전 대상 또는 수단으로 하는 전쟁양상이며, 군사와 비군사의 경계를 나누기 어렵다. 왜냐하면 인지과정, 심리, 정보는 인간의 오감과 연결되며, 인간의 오감에 영향을 주는 것은 군사분야에 한정되지 않기 때문이다. 인지전, 심리전, 정보전은 최종목적이 사람의 의사결정에 영향을 미친다는 공통점, 최근에는 인터넷을 통한 문자, 그림, 동영상 등을 주요 수단으로 한다는 공통점 때문에 구분이 쉽지 않다. 이 연구를 통해 인지전, 심리전, 정보전을 구분하고 전쟁에 적용되는 방식을 알게 될 것이다.

• 한국군사과학기술학회지
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• 제11권2호
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• pp.53-65
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• 2008

This paper proposes the qualitative method for planning the operation of multi-AUVs with environmental disturbances, which is considered to be a very difficult task. In this paper we use an extension collision map as a collision free motion planner. The tool was originally developed for the multiple ground vehicles with no internal/external disturbance. In order to apply the method to a water environment where there are tides and waves, and currents, we analyze the path deviation error of AUVs caused by external disturbances. And we calculate safety margin for the collision avoidance on the extension collision map. Finally, the simulation result proves that the suggested method in this paper make multi-AUVs navigate to the goal point effectively with no collision among them.

• 안보군사학연구
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• 통권1호
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• pp.113-154
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• 2003

We can feel the fear through the reports of outbreaking centers of terror. Also, we noticed through "the 9.11 terror" that there exists no safety zone from terrorism. However, we should question ourselves whether we are relaxing attention or ceasing anxiety too much in the perimeter, as in the peninsula of Korea. Through "the 9.11 terror", the vulnerability of the United State's homeland security has been exposed, giving a serious damage to the national pride. President Bush started the war against terror to strengthen global joints of anti-terrorism, identify terrorists and contribute to the global peace, adopting offensive realism including preemptive attack concept which means to remove the threat preemptively. In today's reality of international politics, where the inhuman, indiscriminate, and anti-civilizational international terror became greater, extending to the stage of war, the international societies' agony and focus lies on how to banish it. The 9.11 terrorism, which is a new form of terrorism, is being distinguished from conventional terrorism into new terrorism. New terrorism is a new form of terrorism meaning that you do not know the enemy, the goal does not exist and they conscientiously use the weapons of mass destruction. This paper is a work meant to help understanding new terrorism, the new form, by a comparative analysis with the conventional terrorism. Therefore the origin, concept and general characteristics new terrorism is picked out and the representative forms of it, which are suicide bombing, cyber, biochemical and nuclear terrorism, are analyzed in detail in theoretical manner.

• 한국인터넷방송통신학회논문지
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• 제10권6호
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• pp.235-241
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• 2010

정전기 발생에서 가장 직접적이고 주요인자는 주변 습도 상태이다. 대부분의 정전기 발생은 마찰에 의해 발생되는 마찰전기이며, 공기 중에 포함된 수분의 양에 따라 물체 주위에 하나의 얇은 전도 층을 형성하게 되어 발생하는 정전기 충전 전압을 물체 표면 전체에 흩어지게 하는 함수 역할을 하게 된다. 정전기 방전 현상은 순간적인 전압상승을 야기하며 경우에 따라서는 아주 치명적인 손상을 입히게 된다. 무기체계의 조립, 취급, 수송, 저장의 과정에서 쉽게 나타날 수 있는 정전기 방전 현상을 미연에 방지하기 위한 방법을 설계 하고 분석 한다. 이러한 방법은 각종 무기체계 개발 관련자들의 정전기 방전 보호를 위한 설계 지침을 제시하며, 정전기에 대한 대책을 수립할 수 있도록 규정과 지원을 해 줄 수 있다.

• 한국군사과학기술학회지
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• 제23권5호
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• pp.494-501
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• 2020

When we develop an OpenGL-based coastline map that displays the high resolution data of GSHHG, it takes tens of seconds until the first scene is rendered. That is because it takes time to tessellate polygons with a huge number of vertices. A commonly used solution is that it converts original data to a customized data in advance, and it displays these. But if we should use original data to display a coastline map, we need to find another solution. In this paper we suggest using a polygon splitting technique to minimize tessellation time. In order to prove its effectiveness, we implemented a software applied this technique and measured its performance. The software applied this technique took a few seconds to display the first scene and we confirmed its effectiveness.

• 한국군사과학기술학회지
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• 제20권1호
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• pp.98-107
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• 2017

Electric components equipped with naval shipboards must endure mechanical shock caused by various mechanical impulsive sources. Thus the components must be designed carefully and reliability test is an essential procedure before use. In this study, a new design technology applicable to a large and heavy shock generation system which can generate various specific real mechanical shocks in specified time domain was introduced. Commonly, the shock transmitted through the wall of naval shipboard consists of dual shocks. The primary shock is of a very high amplitude and very short period half-sine form. The following shock is of an exponentially decaying harmonic form of relatively longer period. Based on the different dynamic characteristics of two shocks, we proposed a sequential design procedure to determine spring and damping coefficients of the generation system. Some numerical simulation results showed the feasibility of the proposed method.

• 한국군사과학기술학회지
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• 제20권1호
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• pp.90-97
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• 2017

In this paper, we propose a new array antenna scheme which has an improved side lobe level (SLL) as well as a simplified feeding network and a high gain. The proposed array scheme is based on a non-uniformly excited sub-array. For analysis, we use an array factor of sub-array antenna. In the simulation results, the simulated SLL and gain provide more than 18.43 dB and 26.63 dBi, respectively. For the verification of the proposed design scheme, the prototype antenna with $16{\times}8$ radiating elements was designed by the proposed array scheme. The measured SLL and gain are more than 19.85 dB and 25.53 dBi, respectively. This measurement result indicates that the proposed array scheme is reasonable.

• 한국군사과학기술학회지
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• 제20권1호
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• pp.25-32
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• 2017

Most of weapon systems use aided navigation system which integrates inertial navigation and aiding sensors to compensate the INS errors increasing with the passage of time. Various aid sensors can be applied such as Global Navigation Satellite System (GNSS), radar, barometer, etc., but there might exist time delay caused by signal processing or transferring aid information. This time delay leads out-of-sequence measurements (OOSM) systems. Previously, optimal and suboptimal measurment update method for OOSM systems, where the time delay length are known, are proposed. However, previous algorithm does not guarantee the positive definite property of covariance matrix. In order to improve numerical stability for aided navigation using delayed-measurement, this paper proposes a new measurement covariance update algorithm be similar to Joseph-form in Kalman filter. Futhermore, we propose how to implement it in indirect feedback Kalman filter structure, which is commonly used in aided navigation systems, for time-delayed measurement systems. Simulation and vehicle test results show effectiveness of a proposed algorithm.

• 한국군사과학기술학회지
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• 제17권6호
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• pp.711-717
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• 2014

Global path planning for autonomous driving of unmanned ground vehicle is essential. When setting global path planning, its accuracy and effectiveness is increased if useful information such as terrain type of driving route has been reflected on global path planning. As a method to reflect the terrain type, there is a method to perform global path planning by applying the weight to each terrain type. At this time, how to assign appropriate weights corresponding to the terrain type is more important than anything. In this paper, we proposed a method to determine the weight for terrain type that may affect the results of global path planning. Moreover, we presented effective operation method and design results(GUI) to check the possibility of the use of the proposed method.