• 한국소프트웨어감정평가학회 논문지
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• 제16권2호
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• pp.1-8
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• 2020

컴퓨터 프로그램의 표절 또는 복제에 대한 유사도 검출은 구현에 사용된 프로그래밍 언어, 분석 대상 코드의 종류에 따라 각기 다른 감정 방법과 도구가 필요하다. 최근 들어 증가하고 있는 내장형 시스템의 목적 코드에 대한 유사도 감정은 원시 코드와 비교해 더욱 복잡한 과정 및 고도의 기술과 함께 상당한 자원을 요구하고 있다. 본 연구에서는 목적 코드를 대상으로 역 어셈블리 기법의 적용과 같은 역공학 방법을 이용하여, 목적 코드의 어셈블리어 변환을 통한 어셈블리어 레벨에서의 함수 단위 유사도 감정 방법에 관하여 연구하였다. 그리고, 어셈블리어 레벨에서의 유사도 비교를 위해 코드의 구문분석을 통한 명령어 및 오퍼랜드 테이블을 생성하고, 이를 대상으로 유사도를 검출할 수 있는 도구의 설계에 관하여 기술하였다.

• Korean Journal of Acupuncture
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• 제39권3호
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• pp.71-83
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• 2022

Objectives : Instructional design is the systematic approach to the Analysis, Design, Development, Implementation, and Evaluation of learning materials and activities. We aimed to apply the rapid prototyping to instructional systems design (RPISD) in meridianology laboratory, a subject in which students train acupuncture to develop lesson plan. Methods : The needs of the stakeholders including client, subject matter expert and students were analyzed using the performance needs analysis model. Task analysis was implemented by observation and interview. First prototype was drafted and implemented in meridianology laboratory class once. The second prototype was modified from the first, by usability evaluation of the stakeholders. Results : The client requested an electronically documented manual to improve the quality of acupuncture training. The learner requested an extension of practice time and detailed practice guidelines. The main problems of students' performance were some cases of violation of clean needle technique, the lack of communication between the operator and recipient in direct, and lack of confidence in their own performance. Stakeholders were generally satisfied with the proposed first prototype. Second prototype of lesson plan was produced by modifying some contents. Conclusions : A lesson plan was developed by applying the systematic RPISD model. It is expected that the developed instructional design may contribute to the quality improvement of meridianology laboratory education.

• 정보보호학회논문지
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• 제32권6호
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• pp.1059-1068
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• 2022

양자 컴퓨터의 계산 능력을 고려하여 설계된 양자 내성 암호 NTRU는 수학적으로 안전한 암호 조건을 만족하지만 하드웨어 구현 과정에서는 전력 분석 공격과 같은 부채널 공격 특성을 고려해야 한다. 본 논문에서는 NTRU의 복호화 과정 중 발생하는 전력 신호를 분석할 경우 개인 키가 노출될 가능성이 있음을 검증한다. 개인 키를 복구하는 데에는 단순 전력 분석 공격(Simple Power Analysis, SPA), 상관 전력 분석 공격(Correlation Power Analysis, CPA)과 차분 딥러닝 분석 공격(Differential Deep Learning Analysis, DDLA)을 모두 적용할 수 있었다. 이러한 전력 부채널 공격에 대응하기 위한 기본적인 대응책으로 셔플링 기법이 있으나 보다 효과적인 방법을 제안한다. 제안 방식은 인덱스별로 곱셈(multiplication)후 누산(accumulation)을 하는 것이 아니라 계수별로 누산 후 덧셈만 하도록 함으로써 곱셈 연산에 대한 전력 정보가 누출되지 않도록 하여 CPA 및 DDLA 공격을 방어할 수 있다.

• International Journal of Advanced Culture Technology
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• 제9권4호
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• pp.402-408
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• 2021

We are designed the delivery constitution technique that is to be measure the safe RFID statusof thewireless delivery system level (WDSL) on the delivery system tracking system. The delivery system level condition by the delivery system tracking system is organized with the RFID system. As to inspection a wireless network of the wireless network, we are found of the delivery value with wireless network by the upper take form. The concept of delivery system level is organized the reference of wireless level for delivery signal by the delivery RFID tracking system. Further, symbolizing a safe deliveryof the WDSL of the medium-minimum interval of the RFID tracking system, and the delivery wireless network RFID that was the delivery value of the far delivery of the DSTS-FA-_φMED-MIN with 5.80±1.20 units, that was the delivery value of the convenient delivery of the DSTS-CO-_φMED-MIN with 4.06±(-0.04) units, that was the delivery value of the flank delivery of the DSTS-_φMED-MIN with 0.91±0.07 units, that was the delivery value of the vicinage delivery of the DSTS-VI-_φMED-MIN with 0.18±(-0.03) units. The RFID will be to look into at the safe of the RFID tracking systemwith wireless network bythe delivery system level on the WDSL that is supply the wireless tracking system by the delivery system level system. We will be possible make to curb of a tracking system that to put the wireless signal and to use of the delivery data of RFID level by the delivery system.

• 문화기술의 융합
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• 제8권6호
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• pp.487-492
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• 2022

대학들은 급변하는 사회 환경에 적합한 교육역량 수준을 높이기 위해 다양한 방법들을 찾고 있다. 본 논문에서는 조사 항목을 수정, 보완한 만족도 사전조사를 개강 전에 실행하여 학업성취도를 높이고 전공 이탈자의 비율을 낮춰 교육 성과를 높이는 방안을 제안한다. 일반적인 만족도 조사 이후에 시행되는 교육품질 개선(CQI) 방식을 보완하고자 만족도 사전조사를 시행하였다. 학생역량을 강화하기 위해 설계가 진행 중인 인공지능형 메디치 플랫폼에 적용할 수 있는 머신러닝 기법의 랜덤 포레스트를 활용하여 중요한 데이터의 예측 및 분석을 가능하게 하였다. 만족도 사전조사 데이터들을 전처리하여 수강 신청 학생들의 정보를 설명 변수로 정의하고 분류하여 모델 생성 및 학습하였다. 실험 환경은 주피터 노트북 3.7.7, Python 3.7에서 관련 알고리즘과 사이킷런(sklearn) 라이브러리를 함께 사용하였다. 제안하는 방안의 결과를 수업에 반영하여 수업 후에 진행하는 교육 만족도 조사의 변화와 중도 탈락생 수의 동향을 비교 분석하였다.

• 정보보호학회논문지
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• 제32권2호
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• pp.201-211
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• 2022

최근 사이버보안 패러다임의 변화에 따라, 인공지능 구현 기술인 기계학습과 딥러닝 기법을 적용한 이상탐지 방법의 연구가 증가하고 있다. 본 연구에서는 공개 데이터셋인 NGIDS-DS(Next Generation IDS Dataset)를 이용하여 GRU(Gated Recurrent Unit) 신경망 기반 침입 탐지 모델의 이상(anomaly) 탐지 성능을 향상시킬 수 있는 데이터 전처리 기술에 관한 비교 연구를 수행하였다. 또한 정상 데이터와 공격 데이터 비율에 따른 클래스 불균형 문제를 해결하기 위해 DCGAN(Deep Convolutional Generative Adversarial Networks)을 적용한 오버샘플링 기법 등을 사용하여 오버샘플링 비율에 따른 탐지 성능을 비교 및 분석하였다. 실험 결과, 시스템 콜(system call) 특성과 프로세스 실행패스 특성에 Doc2Vec 알고리즘을 사용하여 전처리한 방법이 좋은 성능을 보였고, 오버샘플링별 성능의 경우 DCGAN을 사용하였을 때, 향상된 탐지 성능을 보였다.

• 산업경영시스템학회지
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• 제45권3호
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• pp.31-39
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• 2022

The Army, Navy, and Air Force are currently making various efforts to apply defense IoT technology by reflecting the characteristics of each military. However, there are concerns that comprehensive collection, management, and analysis may be limited because each military has no overlapping system or guaranteed interoperability of data, and there are inefficient aspects in terms of using and investing a limited defense budget. In this study, evaluation items and priorities for pilot projects were selected by applying Delphi technique and AHP method to determine which projects are preferentially effective when commonly applied in terms of Army, Navy, and Air force. As a result of the analysis, the project basis and driving force, project feasibility, performance and ripple effect, redundancy and connection were identified in the order of IoT-based small detachment units and unmanned base construction, intelligent smart unit, smart ground ammunition depot, and smart training management system. According to the comprehensive results reflecting the weights of each evaluation item, the fact that small detachment units and unmanned base construction project are recognized as the first project to be applied to the Army, Navy, and Air Force is a valid approach to be effective while each military is burdened with personnel management because of the reduction of manpower. Through the research results, it is expected that the direction of application to the policy of the defense IoT project can be confirmed in terms of efficient use of limited budgets.

• International Journal of Advanced Culture Technology
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• 제10권2호
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• pp.187-193
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• 2022

We is configured the honk changing-status technique that is to meld the square-built blow-shock status of the gleam-differential perception level (BIAL) on the honk perception lineament. The perception level condition by the honk perception lineament system is constituted with the blow-shock system. As to experimentation a ductile-dot of the gleam ductile-dot, we are found of the honk value with ductile-dot by the blow upper shift. The concept of perception level is constituted the reference of gleam-differential level for changing-status signal by the honk shock lineament. Further symbolizing a square-built changing-status of the BIAL, of the average in terms of the blow-shock lineament, and the honk ductile-dot shock that was the honk value of the far changing-status of the Ho-PL-FA-θ_AVG with 15.41±8.63 units, that was the honk value of the convenient changing-status of the Ho-PL-CO-θ_AVG with 8.70±3.06 units, that was the honk value of the flank changing-status of the Ho-PL-HO-θ_AVG with 2.65±1.19 units, that was the honk value of the edge changing-status of the Ho-PL-VI-θ_AVG with 0.51±0.18 units. The blow shock will be to investigate at the square-built ability of the blow-shock lineament with ductile-dot by the honk perception level on the BIAL, that is denote the gleam-differential lineament by the perception level system. We will be possible to curb of a lineament by the differential signal and to employ the honk data of blow shock level by the blow perception system.

• 한국근적외분광분석학회:학술대회논문집
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• 한국근적외분광분석학회 2001년도 NIR-2001
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• pp.1041-1041
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• 2001

Removal of variability in spectra data before the application of chemometric modeling will generally result in simpler (and presumably more robust) models. Particularly for sparsely sampled data, such as typically encountered in diode array instruments, the use of Savitzky-Golay (S-G) derivatives offers an effective method to remove effects of shifting baselines and sloping or curving apparent baselines often observed with scattering samples. The application of these convolution functions is equivalent to fitting a selected polynomial to a number of points in the spectrum, usually 5 to 25 points. The value of the polynomial evaluated at its mid-point, or its derivative, is taken as the (smoothed) spectrum or its derivative at the mid-point of the wavelength window. The process is continued for successive windows along the spectrum. The original paper, published in 1964 [1] presented these convolution functions as integers to be used as multipliers for the spectral values at equal intervals in the window, with a normalization integer to divide the sum of the products, to determine the result for each point. Steinier et al. [2] published corrections to errors in the original presentation [1], and a vector formulation for obtaining the coefficients. The actual selection of the degree of polynomial and number of points in the window determines whether closely situated bands and shoulders are resolved in the derivatives. Furthermore, the actual noise reduction in the derivatives may be estimated from the square root of the sums of the coefficients, divided by the NORM value. A simple technique to evaluate the actual convolution factors employed in the calculation by the software will be presented. It has been found that some software packages do not properly account for the sampling interval of the spectral data (Equation Ⅶ in [1]). While this is not a problem in the construction and implementation of chemometric models, it may be noticed in comparing models at differing spectral resolutions. Also, the effects on parameters of PLS models of choosing various polynomials and numbers of points in the window will be presented.

• Geomechanics and Engineering
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• 제31권6호
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• pp.599-614
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• 2022

One of the methods of stabilizing retaining walls, embankments, and deep excavations is the implementation of plate anchors (like the Geolock wall anchor systems). Back-to-back Mechanically Stabilized Earth (BBMSE) walls are common stabilized earth structures that can be used for bridge ramps. But so far, the analysis of the interactive behavior of two back-to-back anchored walls (BBAW) by double-plates anchors (constructed closely from each other and subjected to the limited-breadth vertical loading) including interference of their failure and sliding surfaces has not been the subject of comprehensive studies. Indeed, in this compound system, the interaction of sliding wedges of these two back-to-back walls considering the shear failure wedge of the foundation, significantly impresses on the foundation bearing capacity, adjacent walls displacements and deformations, and their stability. In this study, the effect of horizontal distance between two walls (W), breadth of loading plate (B), and position of vertical loading was investigated experimentally. In addition, the comparison of using single and equivalent double-plate anchors was evaluated. The loading plate bearing capacity and displacements, and deformations of BBAW were measured and the results are presented. To evaluate the shape, form, and how the critical failure surfaces of the soil behind the walls and beneath the foundation intersect with one another, the Particle Image Velocimetry (PIV) technique was applied. The experimental tests results showed that in this composite system (two adjacent-loaded BBAW) the effective distance of walls is about W = 2.5*H (H: height of walls) and the foundation effective breadth is about B = H, concerning foundation bearing capacity, walls horizontal displacements and their deformations. For more amounts of W and B, the foundation and walls can be designed and analyzed individually. Besides, in this compound system, the foundation bearing capacity is an exponential function of the System Geometry Variable (SGV) whereas walls displacements are a quadratic function of it. Finally, as an important achievement, doubling the plates of anchors can facilitate using concrete walls, which have limitations in tolerating curvature.