• Title/Summary/Keyword: Side Information

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Side-Channel Archive Framework Using Deep Learning-Based Leakage Compression (딥러닝을 이용한 부채널 데이터 압축 프레임 워크)

  • Sangyun Jung;Sunghyun Jin;Heeseok Kim
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.34 no.3
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    • pp.379-392
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    • 2024
  • With the rapid increase in data, saving storage space and improving the efficiency of data transmission have become critical issues, making the research on the efficiency of data compression technologies increasingly important. Lossless algorithms can precisely restore original data but have limited compression ratios, whereas lossy algorithms provide higher compression rates at the expense of some data loss. There has been active research in data compression using deep learning-based algorithms, especially the autoencoder model. This study proposes a new side-channel analysis data compressor utilizing autoencoders. This compressor achieves higher compression rates than Deflate while maintaining the characteristics of side-channel data. The encoder, using locally connected layers, effectively preserves the temporal characteristics of side-channel data, and the decoder maintains fast decompression times with a multi-layer perceptron. Through correlation power analysis, the proposed compressor has been proven to compress data without losing the characteristics of side-channel data.

A study on the pinch-off characteristics for Double Cate MOSFET in nuo structure (나노 구조 Double Gate MOSFET의 핀치오프특성에 관한 연구)

  • 고석웅;정학기
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.6 no.7
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    • pp.1074-1078
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    • 2002
  • In this paper, we designed double gate(DG) MOSFET structure which has main gate(MG) and two side gates(SG). We have simulated using TCAD simulator U .WOSFET have the main gate length of %m and the side gate length of 70nm. Then, u'e have investigated the pinch-off characteristics, drain voltage is changed from 0V to 1.5V at VMG=1.5V and VSG=3.0V. In spite of the LMG is very small, we have obtained a very good pinch-off characteristics. Therefore, we know that the DG structure is very useful at nano scale.

Economic Damage Model on Industries due to Internet Attack and A Case Study (인터넷 침해사고로 인한 기업의 경제적인 피해 산출 모델 및 케이스 연구)

  • Jang, Jong-Ho;Chung, Ki-Hyun;Choi, Kyung-Hee
    • The KIPS Transactions:PartC
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    • v.15C no.3
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    • pp.191-198
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    • 2008
  • Because of the internet development, most of people can acquire the information freely. But it have the disadvantages. A remarkable thing among the disadvantages is the internet attack. Internet attacks were given damages to several fields. Specially, the damage is terrible to the economic side. Specially, company is susceptive to economic damage side. But it didn't execute a research about model that estimates damage to the economic side due to internet attacks. This paper presents a model that estimates the damage to economic side due to internet attacks.

The secondary excited induction generator in random wave input system

  • Kim, Moon-Hwan
    • Journal of information and communication convergence engineering
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    • v.7 no.2
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    • pp.209-214
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    • 2009
  • The employment of the induction generator is preferable in the natural energy utilization by the minimum maintenance and the mechanical robustness, Another merit is also expected when it is connected to the power network system, because constant-voltage and constant frequency (CVCF) power generation is easily realized in spite of the variation of the rotor speed. However the induction generator needs much amount of the reactive power that reduces power factor in the primary side. The improvement of power factor in the primary side requires large VAR compensator, this point is solved, the merit of the induction machine as a main generator will become more established. This paper proposes a novel approach where the secondary is controlled by a PWM inverter not only to get CVCF power but also to improve the primary power factor. Basically the inverter is controlled so that the field current is supplied from the secondary side in this approach. The required capacity of the inverter is small, because only the slip power is controlled in the secondary side. In the experimental system where the sea wave torque simulator is used, the power factor is well improved by the microcomputer controlled PWM inverter.

Light 3D Modeling with mobile equipment (모바일 카메라를 이용한 경량 3D 모델링)

  • Ju, Seunghwan;Seo, Heesuk;Han, Sunghyu
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.12 no.4
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    • pp.107-114
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    • 2016
  • Recently, 3D related technology has become a hot topic for IT. 3D technologies such as 3DTV, Kinect and 3D printers are becoming more and more popular. According to the flow of the times, the goal of this study is that the general public is exposed to 3D technology easily. we have developed a web-based application program that enables 3D modeling of facial front and side photographs using a mobile phone. In order to realize 3D modeling, two photographs (front and side) are photographed with a mobile camera, and ASM (Active Shape Model) and skin binarization technique are used to extract facial height such as nose from facial and side photographs. Three-dimensional coordinates are generated using the face extracted from the front photograph and the face height obtained from the side photograph. Using the 3-D coordinates generated for the standard face model modeled with the standard face as a control point, the face becomes the face of the subject when the RBF (Radial Basis Function) interpolation method is used. Also, in order to cover the face with the modified face model, the control point found in the front photograph is mapped to the texture map coordinate to generate the texture image. Finally, the deformed face model is covered with a texture image, and the 3D modeled image is displayed to the user.

Development of 3-axis Loadcell for Measuring the Side Force of MPV Using Design of Experiment (실험계획법을 이용한 다목적 차량의 측면하중 측정을 위한 3축 로드셀 개발)

  • Chu, Sung-Il;Park, Jun-Hyub;Lee, Jin-Gun;Park, Ji-Young
    • Transactions of the Korean Society of Automotive Engineers
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    • v.15 no.4
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    • pp.83-93
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    • 2007
  • This paper represents the development of 3-axises loadcell for measuring the side-force of suspension module of MPV(Multi Purposed Vehicle). The side force causes the failure of damper, such as leakage. The loadcell was developed using strain gauges, and the Wheastone bridge circuit to compensate for the cross-talk between the each axises and the measurement error by temperature. Structure analysis of loadcell was accomplished with FEM(Finite Element Method) to optimize the location of strain gages. The design optimization for important factors that have an effect on performance of loadcell was accomplished by using DOE(Design of Experiment). Loadcell was produced and successfully tested, showing good sensitivity and low cross-talk. The cross-talk of the developed loadcell is bellow 5%. The load history was measured at proving ground. The maximum side-force, the longitudinal force, and vertical force of MPV are 4.2 kN, 8.0 kN, and 17.0 kN, respectively, at Belgian road.

The Welfare Effect of Mandatory Prescription in Korea (의약분업이 소비자후생에 미치는 영향)

  • 유정식
    • Health Policy and Management
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    • v.9 no.4
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    • pp.65-86
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    • 1999
  • In this study, we investigate the welfare effect of mandatory prescription(MP) in Korea. An immediate effect of MP is the increase in the implicit price of prescribed medicine, which could be obtained easily from drug stores before MP. This will lower the quantity demanded. which will in turn reduce the abuse of drugs. The key to the cost-benefit analysis of MP, therefore, should be focused on this point; price increase in the cost side and quantity decrease in the benefit side. Since we do not have as much information as needed for the analysis, however, we made strong assumptions for the clarity of numbers; the severity of moral hazard of medical doctors related to the sales of hospital drugs, constant demand elasticity, constant benefit multiplier of reduced drug usage, and so on, With these rather strong assumptions, we find that i) the benefit side is much more sensitive to demand elasticity than the cost side effect ii) the larger the demand elasticity, the greater the size of net gain of MP, though the result depends on the size of the benefit multiplier. This analysis shows that we need to have more information on the specific institutional path of health benefit diffusion caused by the reduction of drug usage, which was the major target of MP.

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A study on the pinch-off characteristics for Double Gate MOSFET in nano structure (나노 구조 Double Gate MOSFET의 핀치오프특성에 관한 연구)

  • 고석웅;정학기
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2002.11a
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    • pp.498-501
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    • 2002
  • In this paper, we designed double gate(DG) MOSFET structure which has main gate(MG) and two side gates(SG). We have simulated using TCAD simulator. DG MOSFET have the main gate length of nm and the side gate length of 70nm. Then, we have investigated the pinch-off characteristics, drain voltage is changed from 0V to 1.5V at VMG=1.5V and VSG=3.0V. In spite of the LMG is very small, we have obtained a very good pinch-off characteristics. Therefore, we know that the DG structure is very useful at nino scale.

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Implementation of Educational Game to Accompany Exercising and Generating (운동과 발전을 동반하는 학습게임 설계 및 구현)

  • Lee, Kyong-Ho
    • Journal of the Korea Society of Computer and Information
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    • v.15 no.12
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    • pp.47-55
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    • 2010
  • In this paper, we implemented a serious game system for study to accompany exercising and generating to keep on computer game side effect. The implemented serious game system was divided into the game part and the athletic part. The athletic part for whole body exercising was composed of health bicycle for lower body exercise and additional apparatus for upper body exercise, that was attached to the rear side of health bicycle and several generator was attached to the power point of athletic part. The circuit board and logic program was composed to adjust the exercise strength control, to get data and to communicate with the computer. The game part was composed to promote and educational effectiveness, the whole system emphasized on amusement side while avoided violence side. We confirmed the effect of the serious game system with the fourteen fun form which Garneau insists.

A Novel BOC Correlation Function for BOC Signal Acquisition (BOC 신호 획득을 위한 새로운 BOC 상관함수)

  • Lee, Young-Seok;Yoon, Seok-Ho
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.37 no.5C
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    • pp.437-443
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    • 2012
  • In this paper, we propose a novel unambiguous correlation function for binary offset carrier (BOC) signal acquisition. Specifically, we first find out that the side-peaks arise due to the fact that the BOC autocorrelation is the sum of the irregularly shaped BOC sub-correlations, and then, propose an unambiguous correlation function with no side-peak by combining the sub-correlations. The proposed scheme is shown to remove the side-peaks completely for any type of BOC signal and to provide a better acquisition performance than the conventional correlation functions.