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Efficient construction of a substitution box based on a Mordell elliptic curve over a finite field Research Article

Naveed Ahmed Azam, Umar Hayat, Ikram Ullah,azam@amp.i.kyoto-u.ac.jp,umar.hayat@qau.edu.pk

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 10,   Pages 1378-1389 doi: 10.1631/FITEE.1800434

Abstract: We study the balance problem caused by forward leaning of the wearer’s upper body during rehabilitation training with a lower limb rehabilitation exoskeleton. The instantaneous capture point is obtained by modeling the human-exoskeleton system and using the capture point theory. By comparing the stability region with instantaneous capture points of different gait phases, the balancing characteristics of different gait phases and changes to the equilibrium state in the gait process are analyzed. Based on a model of the human-exoskeleton system and the condition of balance of different phases, a trajectory correction strategy is proposed for the instability of the human-exoskeleton system caused by forward leaning of the wearer’s upper body. Finally, the reliability of the trajectory correction strategy is verified by carrying out experiments on the Zhejiang University Lower Extremity Exoskeleton. The proposed trajectory correction strategy can respond to forward leaning of the upper body in a timely manner. Additionally, in the process of the center of gravity transferred from a double-support phase to a single-support phase, the ratio of gait cycle to zero moment point transfer is reduced correspondingly, and the gait stability is improved.

Keywords： 密码置换盒；有限域；莫德尔椭圆曲线；总阶数；计算复杂度    

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Side-channel attacks and learning-vector quantization Article

Ehsan SAEEDI, Yinan KONG, Md. Selim HOSSAIN

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 4,   Pages 511-518 doi: 10.1631/FITEE.1500460

Abstract: The security of cryptographic systems is a major concern for cryptosystem designers, even though cryptography algorithms have been improved. Side-channel attacks, by taking advantage of physical vulnerabilities of cryptosystems, aim to gain secret information. Several approaches have been proposed to analyze side-channel information, among which machine learning is known as a promising method. Machine learning in terms of neural networks learns the signature (power consumption and electromagnetic emission) of an instruction, and then recognizes it automatically. In this paper, a novel experimental investigation was conducted on field-programmable gate array (FPGA) implementation of elliptic curve cryptography (ECC), to explore the efficiency of side-channel information characterization based on a learning vector quantization (LVQ) neural network. The main characteristics of LVQ as a multi-class classifier are that it has the ability to learn complex non-linear input-output relationships, use sequential training procedures, and adapt to the data. Experimental results show the performance of multi-class classification based on LVQ as a powerful and promising approach of side-channel data characterization.

Keywords： Side-channel attacks     Elliptic curve cryptography     Multi-class classification     Learning vector quantization    

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A power resource dispatching framework with a privacy protection function in the Power Internet of Things Research Article

Shuanggen LIU, Shuangzi ZHENG, Wenbo ZHANG, Runsheng FU

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 9,   Pages 1354-1368 doi: 10.1631/FITEE.2100518

Abstract: Smart meters in the generate a large amount of power data. However, data privacy in the process of calculation, storage, and transmission is an urgent problem to be solved. Therefore, in this paper we propose a power resource dispatching framework (PRDF) with a privacy protection function, which uses a scheme based on . Using pseudonyms and aggregating users’ power data, PRDF not only protects users’ privacy, but also reduces the computing cost and communication overhead under traditional cloud computing. In addition, if the control center finds that a user has submitted abnormal data, it can send a request to the user management center to track the real identity of the user. Our scheme satisfies security requirements based on the , including confidentiality and unforgeability. Furthermore, we compare our scheme with other schemes by simulations. Simulation results show that compared with traditional methods, our method performs better in terms of the computation cost.

Keywords： Power Internet of Things     Cloud-fog cooperation     Elliptic curve     Random oracle model     Certificateless aggregate signcryption    

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Study on construction mechanical behavior of silt filled karst cave tunne

Miao Dehai ,Mo Yangchun,Wang Wei,Chen Tao

Strategic Study of CAE 2009, Volume 11, Issue 12,   Pages 41-46

Abstract:

When tunnel is constructed in karst cave zone, all kinds of filled caverns will be inevitably meet.The construction method and tunnel structure's stability becomes the key problem for the design and construction. The range of DK255+925~+976, filled with crushed rock and silt, forⅠline of Maluqing tunnel on Yichang-Wanzhou Railway is taken as an example. The mechanical responses of excavation and support are studied by using the three-dimensional fast Lagrangian analysis of continua method. The numerical simulation reveals the distribution characteristics of displacement for surrounding rock and displacement and interial stress for the shotcrete and the maximum axis force for locking anchor pipe under the condition of dynamic step excavation and support. The obtained conclusions offer a guideline for the design and construction of tunnels in similar underground projects.

Keywords： tunnelling engineering     silt filled Karst cave     mechanical behavior     numerical simulation    

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Japan’s 10th Technology Foresight: Insights and Enlightenment

Sun Shengkai,Wei Chang,Song Chao,Pei Yu

Strategic Study of CAE 2017, Volume 19, Issue 1,   Pages 133-142 doi: 10.15302/J-SSCAE-2017.01.019

Abstract:

Technology foresight is a systemic national science and technology policy in Japan, where it has been consistently and effectively implemented. To date, Japan has implemented technology foresight research 10 times, thus meaningfully promoting research and development in science and technology in Japan, the technological innovation and management abilities of Japanese companies, and a deep understanding of the development law of technology. This paper introduces the methodology, modes, implementation system, and survey process of Japan's 10th technology foresight; analyzes its experiences and problems; and provides reference and guidance for technology foresight in China.

Keywords： Japan     technology foresight     problem-solution mode     scenario planning     Delphi method    

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Technology Foresight on China’s Information and Electronics Engineering Science and Technology to 2035

An Da,Li Mengnan,Xu Shouren,Tao Li and Liang Zhihao

Strategic Study of CAE 2017, Volume 19, Issue 1,   Pages 50-56 doi: 10.15302/J-SSCAE-2017.01.008

Abstract:

As one of the most innovative, integrated, and cutting-edge science and technology fields, the information and electronics field has developed very rapidly in recent years, and has had a profound effect on almost all other fields. Therefore, technology foresight for this field is particularly important. Sponsored by the project titled "Research on China's Engineering Science and Technology Development Strategy 2035", this study implemented two rounds of investigation into the field of information and electronics, using the Delphi method. By using different approaches, this study was able to identify critical applied technologies, important generic technologies, and potential disruptive technologies that are particularly noteworthy. In addition, this paper draws a careful comparison between two rounds of survey conclusions for "big data technology", "advanced computing technology", "space-ground integrated information network technology", and other important technologies. This paper provides a reference for the establishment of important technical directions for China's engineering science and technology development plan to 2035 and for future technology foresight.

Keywords： information and electronics     Delphi method     technology foresight     engineering science and technology     investigation and research    

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Technology and Equipment for Cold-Chain Storage and Transportation of Fresh Agricultural Products

Yang Tianyang, Tian Changqing, Liu Shusen

Strategic Study of CAE 2021, Volume 23, Issue 4,   Pages 37-44 doi: 10.15302/J-SSCAE-2021.04.005

Abstract:

Technology and equipment for cold-chain storage and transportation is critical for maintaining the quality and improving the circulation efficiency of fresh agricultural products and strategically important for ensuring food safety and increasing agricultural income. In this article, we analyze the demand for cold-chain storage and transportation technology and equipment in China, summarize the current status, and present the gaps between China and developed countries in this regard. Moreover, we clarify the key technologies, key tasks, and major projects for the development of cold-chain storage and transportation technology and equipment for fresh agricultural products using the Delphi method and field research. The major problems faced by technology and equipment include lack of specialized pre-cooling facilities in places of production, lack of refrigerated transportation equipment, backward quick-freezing technology and equipment, lagging research and development of key technologies, non-standardized construction of refrigeration and cold-storage facilities, and insufficient cold-chain infrastructure. Furthermore, we propose a three-step technical route for the development of the technology and equipment: achieving high efficiency and standardization by 2025, informatization and intelligence by 2035, and intelligence and autonomation by 2050.

Keywords： fresh agricultural products，cold-chain storage and transportation technology，cold-chain equipment，Delphi method    

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The Arithmetic of GTEM Cell Axe-shaped Piece´s Side Curve Equation

Zhou Xu

Strategic Study of CAE 2003, Volume 5, Issue 9,   Pages 36-38

Abstract:

To be convenient for machining, the conventional axe-shaped pieces were approximately designed. It is proved that the traditional transition in a GTEM Cell can not give a satisfactory transmission loss distribution. So this paper gives the exact continuous curve equation for the axe-shaped piece´s two sides for the first time.

Keywords： giga-hz transverse electromagnetic cell     the axe-shaped piece     the side curve equation     impedance matching    

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Caustics of developable surfaces Research Articles

Miklós HOFFMANN, Imre JUHÁSZ, Ede TROLL,hoffmann.miklos@uni-eszterhazy.hu,imre.juhasz@uni-miskolc.hu,troll.ede@uni-eszterhazy.hu

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 3,   Pages 479-487 doi: 10.1631/FITEE.2000613

Abstract: While considering a mirror and light rays coming either from a point source or from infinity, the may have an envelope, called a caustic curve. In this paper, we study s as mirrors. These caustic surfaces, described in a closed form, are also s of the same type as the original mirror surface. We provide efficient, algorithmic computation to find the caustic surface of each of the three types of s (cone, cylinder, and tangent surface of a spatial curve). We also provide a potential application of the results in contemporary free-form architecture design.

Keywords： Caustics     Developable surface     Reflected light rays     Curve of regression    

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Technology Foresight Research on China’s Environmental Engineering Science and Technology to 2035

Dan Zhigang,Shi Feifei,Wang Zhizeng,Wang Huieng、Zhang Peilei、Hao Jiming、Duan Ning

Strategic Study of CAE 2017, Volume 19, Issue 1,   Pages 80-86 doi: 10.15302/J-SSCAE-2017.01.012

Abstract:

The Delphi method is the most common method of technology foresight, which is a significant basis for establishing development strategies and policies of science and technology. This study proposes 45 alternative technologies in the field of environmental engineering science and technology through a literature survey, experts' advice, and discussion meetings. These technologies relate to air pollution prevention and control; water pollution prevention and control; soil pollution prevention and control; solid waste pollution prevention, control, and utilization; ecological protection and restoration; environmental monitoring, early warning, and risk control; resource utilization and cleaner production. Based on results that were obtained according to the Delphi method, this research analyzes the realization time, R&D level, and restriction factors for the key technologies, common technologies, and disruptive technologies that were determined for 2035. This study provides a reference for establishing development strategies and objectives for China’s environmental engineering science and technology over the next 20 years.

Keywords： environmental engineering science and technology     technology foresight     Delphi method     key technology     common technology     disruptive technology    

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Learning Curve and Its Application in Production Operation al Research

Chen Zhixiang

Strategic Study of CAE 2007, Volume 9, Issue 7,   Pages 82-88

Abstract:

Learning curve is one character function that improves output by the experience accumulation of producer. Learning curve can be used to establish scientific cost plan, improve shop flow scheduling, labor quota and plan, quality, and so on. This paper reviews the research literatures, introduces different forms of learning curve, analyzes their characters, and discusses the future directions of application of learning curve.

Keywords： learning curve     operational management     behaviors research    

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Technology Foresight Research on China’s Agricultural Engineering Science and Technology to 2035

Task Force for the Research on China’s Engineering Science and Technology Development Strategy 2035 Agriculture Research Group

Strategic Study of CAE 2017, Volume 19, Issue 1,   Pages 87-95 doi: 10.15302/J-SSCAE-2017.01.013

Abstract:

To improve the scientific judgment of the development strategy for China's agricultural engineering science and technology to 2035, the technology foresight method was used. This method entailed a wide collection of detailed technology foresight lists and two rounds of a questionnaire survey. Based on the survey results, which were studied and judged by specialists, overall development characteristics of agricultural engineering science and technology were confirmed, and then 12 directions for key technologies in agriculture were put forward. Furthermore, a development strategy for key technologies in agriculture was proposed in order to overcome a lack of talent and of R&D inputs in agriculture. In conclusion, technology foresight results can provide important support for creating development strategies for China's agricultural engineering science and technology to 2035.

Keywords： agricultural engineering science and technology     technology foresight     key technology     strategic research     Delphi method    

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Research and Improvement of the Pipe Space Curve of High-speed Laying Head

Liu Hongmin,Yao Shuangji,Yang Lipo,Pang Zhifeng,Li Shuanglai,Liu Wubin,Yan Shengyou,Chu Jiandong

Strategic Study of CAE 2006, Volume 8, Issue 11,   Pages 80-85

Abstract:

For the working problems of laying head of high speed wire rod, choosing cubic spline function to fit the actual measurement data, the velocity and force model is used to analyze the state of the wire rod and research the curve´s effect on the laying head. On the basis of the consequence of calculation and the measured data, the bad working state is due to the sharply changed value of curvature of the pipe and the speed fast changing at the outlet of the pipe. By making some improvement on the space curve and bending processing of the pipe, the working state of laying head such as tail throwing is improved remarkably and the service life of single pipe doubles. The reform consequence approved that the theory model is correct and the renovation methods are reasonable.

Keywords： high speed laying head     pipe of loop laying head     space curve    

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A fast face detection algorithm using enhanced AdaBoostbased on walsh features

Guo Zhibo,Yang Jingyu,Liu Huajun,Yan Yunyang

Strategic Study of CAE 2008, Volume 10, Issue 7,   Pages 125-131

Abstract:

A fast face detection algorithm using enhanced AdaBoost based on Walsh features is proposed in this paper, and its training process is fast and works well under fewer non-face training samples.Firstly,the utility of Walsh features, instead of Harr-Like features can reduce the redundancy among features largely. Then, an enhanced double threshold AdaBoost algorithm is developed, where double threshold makes training process faster ; and in the process of training cascaded detector, the next classifier can be guided by the former classifier,which enhances the performance of the cascaded detector ;moreover,the adjustment to the threshold of each classifier can separate the training result of face and on-face as far as possible. Finally, the trained detector is tested on MIT + CMU test set, and experimental results show that its training speed, precision and detection time exceeds the corresponding method.

Keywords： Walsh features     enhanced AdaBoost     cascaded detector     face detection    

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Analysis of Calendar Life of Aircraft Structure on Corrosion Environment

Yang Xiaohua,Yao Weixing,Chen Yueliang

Strategic Study of CAE 2002, Volume 4, Issue 6,   Pages 33-35

Abstract:

For determining calendar life of aircraft structure, this paper thought that the damage of the aircraft structure resulted from the synergistic effect of ground parking environment and fatigue load. On the basis of dynamic S-N curve, traditional nominal stress-method and Miner theory, this paper put foreword the method that was applied to the estimation of calendar life of aircraft structure.

Keywords： aircraft structure     calendar life     corrosion     fatigue     S-N curve    

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Title Author Date Type Operation

Efficient construction of a substitution box based on a Mordell elliptic curve over a finite field

Naveed Ahmed Azam, Umar Hayat, Ikram Ullah,azam@amp.i.kyoto-u.ac.jp,umar.hayat@qau.edu.pk

Journal Article

Side-channel attacks and learning-vector quantization

Ehsan SAEEDI, Yinan KONG, Md. Selim HOSSAIN

Journal Article

A power resource dispatching framework with a privacy protection function in the Power Internet of Things

Shuanggen LIU, Shuangzi ZHENG, Wenbo ZHANG, Runsheng FU

Journal Article

Study on construction mechanical behavior of silt filled karst cave tunne

Miao Dehai ,Mo Yangchun,Wang Wei,Chen Tao

Journal Article

Japan’s 10th Technology Foresight: Insights and Enlightenment

Sun Shengkai,Wei Chang,Song Chao,Pei Yu

Journal Article

Technology Foresight on China’s Information and Electronics Engineering Science and Technology to 2035

An Da,Li Mengnan,Xu Shouren,Tao Li and Liang Zhihao

Journal Article

Technology and Equipment for Cold-Chain Storage and Transportation of Fresh Agricultural Products

Yang Tianyang, Tian Changqing, Liu Shusen

Journal Article

The Arithmetic of GTEM Cell Axe-shaped Piece´s Side Curve Equation

Zhou Xu

Journal Article

Caustics of developable surfaces

Miklós HOFFMANN, Imre JUHÁSZ, Ede TROLL,hoffmann.miklos@uni-eszterhazy.hu,imre.juhasz@uni-miskolc.hu,troll.ede@uni-eszterhazy.hu

Journal Article

Technology Foresight Research on China’s Environmental Engineering Science and Technology to 2035

Dan Zhigang,Shi Feifei,Wang Zhizeng,Wang Huieng、Zhang Peilei、Hao Jiming、Duan Ning

Journal Article

Learning Curve and Its Application in Production Operation al Research

Chen Zhixiang

Journal Article

Technology Foresight Research on China’s Agricultural Engineering Science and Technology to 2035

Task Force for the Research on China’s Engineering Science and Technology Development Strategy 2035 Agriculture Research Group

Journal Article

Research and Improvement of the Pipe Space Curve of High-speed Laying Head

Liu Hongmin,Yao Shuangji,Yang Lipo,Pang Zhifeng,Li Shuanglai,Liu Wubin,Yan Shengyou,Chu Jiandong

Journal Article

A fast face detection algorithm using enhanced AdaBoostbased on walsh features

Guo Zhibo,Yang Jingyu,Liu Huajun,Yan Yunyang

Journal Article

Analysis of Calendar Life of Aircraft Structure on Corrosion Environment

Yang Xiaohua,Yao Weixing,Chen Yueliang

Journal Article