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A Redesign of the Military Education Structure of General Universities based on Defense Innovation 4.0 -Focused on Capabilities of Tech-Intensive Junior Officers based on Advanced S&T- (국방혁신4.0 기반의 일반대학의 군사학 교육체계 재설계 방안 -첨단과학기술 기반의 기술집약형 초급 간부 역량 중심으로-)

  • Jung-Ho Eom;Keun-Seog Park;Sang-Pil Chun
    • Convergence Security Journal
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    • v.22 no.4
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    • pp.35-44
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    • 2022
  • Among the five promotion strategies of Defense Innovation 4.0(DI 4.0), the military structure/operation optimization strategy aims to innovate the military structure based on advanced science&technology(S&T), and to integrate advanced S&T in the field of defense operation such as education&training and human resource development. As the future battlefield expands to AI-based unmanned/robot combat systems, space, cyberspace, and electromagnetic fields, it is necessary to train officers with the capabilities required in these battlefields. It is necessary to develop capabilities from junior officers who will lead the future battlefield to operating core advanced power based on the 4th industrial revolution S&T. We review the education system of the military in universities and propose a method of redesigning the education system that is compatible with DI 4.0 and can develop technology-intensive capabilities based on advanced S&T. We propose a operation plan of major and extra-programs that can develop the capabilities of junior officers required for the future battlefield, and also suggest ways to support the army's practical training.

A Study on the Carbon Neutrality Scenario Model for Technology Application in Units of Space (공간 단위 탄소중립 기술적용 시나리오 모형(CATAS) 연구)

  • Park, Shinyoung;Choi, Yuyoung;Lee, Mina
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.43 no.1
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    • pp.63-69
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    • 2023
  • 'Carbon-neutrality Assessment based on Technology Application Scenario (CATAS)' provides an analysis of greenhouse gas (GHG) reduction effectiveness when applying carbon-neutrality technology to areas such as energy conversion, transportation, and buildings at certain spatial levels. As for the development scope of the model, GHG emission sources were analyzed for direct GHG emissions, and the boundary between direct and indirect emissions are set according to the spatial scope. The technical scope included nine technologies and forest sinks in the transition sector that occupies the largest portion of GHG emissions in the 2050 carbon neutral scenario. The carbon neutrality rate evaluation methodology consists of four steps: ① analysis of GHG emissions, ② prediction of energy production according to technology introduction, ③ calculation of GHG reduction, and ④ calculation of carbon neutrality rate. After the web-based CATAS-BASIC was developed, an analysis was conducted by applying the new and renewable energy distribution goals presented in the 「2050 Greenhouse Gas Reduction Promotion Plan」 of the Seoul Metropolitan Government. As a result of applying solar power, hydrogen fuel cell, and hydrothermal, the introduction of technology reduced 0.43 million tCO2eq of 1.49 million tCO2eq, which is the amount of emissions from the conversion sector in Seoul, and the carbon neutrality rate in the conversion sector was analyzed to be 28.94 %.

Cortex M3 Based Lightweight Security Protocol for Authentication and Encrypt Communication between Smart Meters and Data Concentrate Unit (스마트미터와 데이터 집중 장치간 인증 및 암호화 통신을 위한 Cortex M3 기반 경량 보안 프로토콜)

  • Shin, Dong-Myung;Ko, Sang-Jun
    • Journal of Software Assessment and Valuation
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    • v.15 no.2
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    • pp.111-119
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    • 2019
  • The existing smart grid device authentication system is concentrated on DCU, meter reading FEP and MDMS, and the authentication system for smart meters is not established. Although some cryptographic chips have been developed at present, it is difficult to complete the PKI authentication scheme because it is at the low level of simple encryption. Unlike existing power grids, smart grids are based on open two-way communication, increasing the risk of accidents as information security vulnerabilities increase. However, PKI is difficult to apply to smart meters, and there is a possibility of accidents such as system shutdown by sending manipulated packets and sending false information to the operating system. Issuing an existing PKI certificate to smart meters with high hardware constraints makes authentication and certificate renewal difficult, so an ultra-lightweight password authentication protocol that can operate even on the poor performance of smart meters (such as non-IP networks, processors, memory, and storage space) was designed and implemented. As a result of the experiment, lightweight cryptographic authentication protocol was able to be executed quickly in the Cortex-M3 environment, and it is expected that it will help to prepare a more secure authentication system in the smart grid industry.

A Case Study on Predicting and Analyzing Inflow Sources of Underground Water in a Limestone Mine (석회석 광산 갱내수 유입원 예측분석 사례연구)

  • Minkyu Lee;Sunghyun Park;Hwicheol Ko;Yongsik Jeong;Seon-hee Heo
    • Tunnel and Underground Space
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    • v.33 no.5
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    • pp.388-398
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    • 2023
  • The changes in groundwater flow due to mining development act as a contributing factor to major issues such as ground subsidence, strength reduction and collapse. For the sustainable mining development, measures for dealing with fluctuations in seasonal underground water inflow, power losses, pump damage, and unexpected increases in inflow must be put in place. In this study, the aim is to identify the causes of underground seepage through the examination of hydrological connectivity between the study area and nearby limestone mine. A tracer tes for assessing subsurface connectivity has been planned. A variety of tracers, such as dyes and ions, were applied in lab test to select the optimal tracer material, and a hydrological model of the study area was implemented through field test. Finally, the hydrological connectivity between the external stream and underground water in the mine was analyzed.

A Study on the Strength Optimized Design of Cushion Bracket on Power Sinking Seat Frame (파워 싱킹 시트 프레임 쿠션 브라켓 구조의 강도 최적화 설계 연구)

  • Jin Hee Heo;Yun Sik Yang;Yeong Jo Ju;Euy Sik Jeon
    • Industry Promotion Research
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    • v.9 no.4
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    • pp.93-103
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    • 2024
  • With recent advancements in autonomous driving technology, vehicles are evolving beyond being simple means of transportation to become spaces for rest and work. As a result, the development of seat frames that maximize the use of interior space has been actively pursued. In particular, the electrification of containment sinking seats has emerged as a significant challenge, especially regarding the structural strength design of seat frame components as they transition from manual to automated systems. This study aims to convert the manual folding mechanism of the sinking seat frame into an automated mechanism using electric motors and to design the required component specifications and strength during the process. The main components for electrification were simplified, and, in particular, the design variables related to the placement angle and length of the electric motor applied to the cushion bracket were set at three levels, with subsequent 3D modeling conducted. The study results are as follows: Firstly, multi-body dynamic analysis showed that, compared to the standard configuration, an optimal motor arrangement angle can reduce motor force and torque by 30.25% and 6.7%, respectively. Secondly, strength analysis, considering the maximum allowable motor load and rear moment for each cushion bracket configuration, indicated that deformation and stress could be reduced by 13.76% and 34.95%, respectively, through the optimal angle and length. Finally, the optimal configuration of the cushion bracket, which aligns with the multi-body dynamic analysis results, was determined. This process is expected to provide a useful reference for future design strategies for automated seat frames.

The Feminine Factor of the Therapeutic Landscape by Water from a Perspective of the Japanese Hot Spring (일본 온천을 중심으로 본 물을 매개로 하는 치유의 경관에서의 여성적 요소)

  • Park, Sookyung
    • Journal of the Korean association of regional geographers
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    • v.22 no.3
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    • pp.529-552
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    • 2016
  • The purpose of this study is to examine the matter as to how the meaning of the physical therapeutic landscape by water, which is associated with physical, cultural, spatial, and economical aspects, appears in the space centering on women and is to look into the feminine factors in term of a rest area, consideration, and imagery for women. From a perspective of a rest area for women, the meaning of a physical aspect is remarkable and is materialized in thermal waters and bathing, atmosphere, subsidiary facilities and safe nightlife. According to these phenomena, female visitors are able to feel freedom, power, which can return themselves to the best condition by thermal waters, therapeutic equipments provided in a watering place continuously, safe protection and exchange with strangers with an open mind. And the cultural aspect of the therapeutic landscape by water is discovered in consideration for women. It is the fact that joins the Japanese culture based on consideration towards others to the traditional culture of hot springs by itself. For example, women can feel various pleasure, experience the protection or the support by someone and pursuit not only physical beauty but also mental or spiritual one through welcome bus, service of Okami san and Nakai san, decorations, funny installments and secure of private space. Lastly, the imagery of women can be identified in cultural, spatial, and economical aspects extensively somewhat and is embodied by advertising mediums, signs of hot springs, shrines, objets and products variously. It is made into healthiness, relaxation, comfort, familiarity and image that are realized to love or are connected to a happy marriage life. To sum up the results, the healing or therapeutic elements for women appearing in hot springs are gathered to some abstraction such as freedom, safe, effect beyond the body, pleasure, durability of healing or therapy, beauty and hope; furthermore, if these abstraction are combined each other closely, the effect of healing or therapy, which transforms anxiety into a stable condition, can be exposed externally.

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Narrative Inquiry : Practical experience of an Introduction to Engineering (공학입문 교과 실행경험에 관한 내러티브 탐구)

  • Park, Kyung-Moon;Kim, Taehoon
    • 대한공업교육학회지
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    • v.34 no.2
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    • pp.128-160
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    • 2009
  • Narratively I have described interactions between two teachers performing an introduction to the engineering class with various situations such as place, teacher, student and subject. I have specifically illuminated a three-dimensional narrative inquiry space embracing the culture of the university, the college of engineering and the ABEEK(Accreditation Board of Engineering Education of Korea)program. The result of the study is as follows: First, in order to stimulate the students' motivation, the teachers have to make not only their class PowerPoint slides match the size of the classroom, but the content of the slides must be condensed with core concepts. They also should utilized some video clips to empower students' interest in the subject within their classrooms. Second, the teachers should do various class activities in the classroom. Instead of spending most of the class time with his/her explanation, it would be advantageous for the teachers to allow the students to perform a task in class. Third, the teachers should ask their students about assignments which are helping students' understanding of the subject and planning of their future. Lastly, the teachers need to design the mid-term and the final tests inducing the students' motivation. Those tests also must test students' creativity and insight of the subject. Thus, the test should consist of an interpretive exercise and an essay type of item thus reducing the multiple choice types of items. There are several limitations to the study. First it is difficult to generalize what we found here because it is a case study. Second, we could not study in depth the effect of the interaction between the two teachers who were performing the introduction to the engineering course during the academic semester. Third, this study just probed into the difficulties of teaching the course. Hence, we have to understand more by focusing on each issue such as adapting to a new learning environment as a student from abroad, a practical experience boosting the students' interest in the introduction to the engineering course, also a practical experience on process based learning-versus result based learning, and an effective management of the student team presentation etc.

U.S. Admiralty Jurisdiction over aviation claims (항공사고에 관한 미국 해사법정관할)

  • Lee, Chang-Jae
    • The Korean Journal of Air & Space Law and Policy
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    • v.31 no.2
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    • pp.3-35
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    • 2016
  • The United States Constitution gives power to the federal district courts to hear admiralty cases. 28 U.S.C. §.133, which states that "The district courts shall have original jurisdiction, exclusive of the Courts of the States, of any civil case of admiralty or maritime jurisdiction." However, the determination of whether a case is about admiralty or maritime so that triggers admiralty jurisdiction was not a simple question. Through numerous legal precedents, the courts have drawn a line to clarify the boundary of admiralty cases. This unique jurisdiction is not determined by the mere involvement of a vessel in the case or even by the occurrence of an event on a waterway. As a general rule, a case is within admiralty jurisdiction if it arises from an accident on the navigable waters of the United States (locus test) and involves some aspect of maritime commerce (nexus test). With regarding to the maritime nexus requirement, the US Supreme Court case, Executive Jet Aviation, Inc. v. City of Cleveland, held that federal courts lacked admiralty jurisdiction over an aviation tort claim where a plane during a flight wholly within the US crashed in Lake Erie. Although maritime locus was present, the Court excluded admiralty jurisdiction because the incident was "only fortuitously and incidentally connected to navigable waters" and bore "no relationship to traditional maritime activity." However, this historical case left a milestone question: whether an aircraft disaster occurred on navigable water triggers the admiralty jurisdiction, only for the reason that it was for international transportation? This article is to explore the meaning of admiralty jurisdiction over aviation accidents at US courts. Given that the aircraft engaged in transportation of passenger and goods as the vessels did in the past, the aviation has been linked closely with the traditional maritime activities. From this view, this article reviews a decision delivered by the Seventh Circuit regarding the aviation accident occurred on July 6, 2013 at San Francisco International Airport.

The Correlation between HRCT Emphysema Score and Exercise Pulmonary Testing Parameters (HRCT Emphysema Scoring과 운동부하 폐기능검사 지표들 간의 상관관계)

  • Choi, Eun-Kyoung;Choi, Young-Hee;Kim, Doh-Hyung;Kim, Yong-Ho;Yoon, Se-Young;Park, Jae-Seuk;Kim, Keun-Youl;Lee, Kye-Young
    • Tuberculosis and Respiratory Diseases
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    • v.50 no.4
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    • pp.415-425
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    • 2001
  • Background : The correlation between the high resolution computed tomography(HRCT) emphysema score and the physiologic parameters including resting and exercise pulmonary function test was investigated in 14 patients($60.6{\pm}10.3$ years) with pulmonary emphysema. Methods : The patients underwent a HRCT, a resting pulmonary function test, and incremental exercise testing(cycle ergometer, 10 W/min). Computed tomography scans were obtained on a GE highlight at 10 mm intervals using 10 mm collimation, from the apex to the base after a full inspiration. The emphysema scores were determined by a CT program 'Density mask' outlining the areas with attenuation values less than -900 HU, indicating the emphysema areas, and providing an overall percentage of lung involvement by emphysema. Results : Among the resting PFT parameters, only the diffusing capacity(r=-0.75) and $PaO_2$ (r=-0.66) correlated with the emphysema score(p<0.05). Among the exercise test parameters, the emphysema score correlated significantly with the maximum power(r=-0.74), maximum oxygen consumption(r=-0.68), anaerobic threshold(V-slope method: r=-0.69), maximal $O_2$-pulse(r=-0.73), and the physiologic dead space ratio at the maximum workload(r=-0.80)(p<0.01). Conclusion: We could find that exercise testing parameters showed a much better correlation with the HRCT emphysema score, which is known to have a good correlation with the pathologic severity than the resting PIT parameters. Therefore it is suggested that exercise testing is superior to resting PIT for estimating in the estimation of the physiologic disturbance in emphysema patients.

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Time Resolution Improvement of MRI Temperature Monitoring Using Keyhole Method (Keyhole 방법을 이용한 MR 온도감시영상의 시간해상도 향상기법)

  • Han, Yong-Hee;Kim, Tae-Hyung;Chun, Song-I;Kim, Dong-Hyeuk;Lee, Kwang-Sig;Eun, Choong-Ki;Jun, Jae-Ryang;Mun, Chi-Woong
    • Investigative Magnetic Resonance Imaging
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    • v.13 no.1
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    • pp.31-39
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    • 2009
  • Purpose : This study proposes the keyhole method in order to improve the time resolution of the proton resonance frequency(PRF) MR temperature monitoring technique. The values of Root Mean Square (RMS) error of measured temperature value and Signal-to-Noise Ratio(SNR) obtained from the keyhole and full phase encoded temperature images were compared. Materials and Methods : The PRF method combined with GRE sequence was used to get MR temperature images using a clinical 1.5T MR scanner. It was conducted on the tissue-mimic 2% agarose gel phantom and swine's hock tissue. A MR compatible coaxial slot antenna driven by microwave power generator at 2.45GHz was used to heat the object in the magnetic bore for 5 minutes followed by a sequential acquisition of MR raw data during 10 minutes of cooling period. The acquired raw data were transferred to PC after then the keyhole images were reconstructed by taking the central part of K-space data with 128, 64, 32 and 16 phase encoding lines while the remaining peripheral parts were taken from the 1st reference raw data. The RMS errors were compared with the 256 full encoded self-reference temperature image while the SNR values were compared with the zero filling images. Results : As phase encoding number at the center part on the keyhole temperature images decreased to 128, 64, 32 and 16, the RMS errors of the measured temperature increased to 0.538, 0.712, 0.768 and 0.845$^{\circ}C$, meanwhile SNR values were maintained as the phase encoding number of keyhole part is reduced. Conclusion : This study shows that the keyhole technique is successfully applied to temperature monitoring procedure to increases the temporal resolution by standardizing the matrix size, thus maintained the SNR values. In future, it is expected to implement the MR real time thermal imaging using keyhole method which is able to reduce the scan time with minimal thermal variations.

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