Transmission Structure Design and Research of Humanoid Finger based on the SMA Wire Drive by Hao Li’na, Guo Shaofei, Chen Yang

“…The shape memory alloy（SMA） actuator has many excellent properties,such as simple structure,easy to control,high power weight ratio,which makes it widely been studied in the dexterous hand as actuator.But the driving displacement is small in practical application,and need to place the drive into the arms to increase drive displacement.The module of under actuated finger structure is designed.The SMA wire worked as actuator.A novel pulley which could amplify the output displacement of actuator is designed.The permanent magnet device provided pre-stretch and restore function,which implemented the drive and transmission of one-piece lightweight design.The transmission structure of the humanoid dexterous hand is analyzed.Finally,the model of finger is made by 3D printer and assemble the single finger,implements the crawl of daily supplies.…”
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Calculation and Optimal Design of Rotor Shaft Torsional Vibration of a Helicopter Transmission System by De Ni, Tuanjie Zhong, Jing Wei, Miaofei Cao, Bin Peng

“…In order to improve the safety margin of torsional vibration of the rotor shaft system of a coaxial counter-rotating double-rotor transmission system，under the premise of considering the lightweight design，by changing the shaft section diameter size or changing the excitation frequency makes the natural frequency of torsional vibration stagger with the excitation frequency，so as to avoid resonance and realize the optimized design of shafting torsional vibration frequency modulation. …”
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Provable secure ownership transfer protocol for RFID tag by Bian-qing YUAN, Ji-qiang LIU

“…With the ownership transfer of an object,the ownership of the RFID tag attached to it also needs to be transferred.Security and privacy are the key issues while researchers studying the process of RFID tag ownership transfer.In the UC(universally composable)framework,an ideal functionality of RFID tag ownership transfer is formally defined.Then,a novel lightweight ownership transfer protocol for RFID tag is proposed.Subsequently,it is proved that proposed protocol realizes the previously defined ideal functionality and satisfies the required security properties such as mutual authentication,tag anonymity,resistance to de-synchronization attacks,forward privacy protection and backward privacy protection.Compared with the existing ownership transfer protocols for RFID tags,the computational complexity and the storage requirements of proposed protocol are all lower.Meanwhile,the number of interaction among the entities is small.Therefore,the proposed protocol can efficiently implement ownership transfer for low-cost tags.…”
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Network Operation,Maintenance and Resource Management in Mega Constellation System by Di ZHOU, Min SHENG, Qi HAO, Jiandong LI, Jianping LIU

“…As the overall scale of the constellation system continues to increase,its service capabilities are gradually expanding from traditional mobile communication services to broadband interconnection services,which puts forward new requirements for the operation,maintenance and resource management in the satellite constellation system.The challenges brought by constellation scale,resource dynamics,and resource failure for the performance management-oriented network operation and maintenance and resource management in mega constellation system (MCS) were fi rst analyzed.The key technologies of network operation,maintenance and resource management for MCS were discussed from the aspects of traff c prediction and resource perception and maintenance and dynamic resource slicing.An intelligent network management and control architecture was proposed to realize lightweight operation and maintenance and resource management for MCS,laying a theoretical foundation for the efficient network operation and maintenance and resource management technology for future space-terrestrial integrated networks.…”
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Thermomechanical Fatigue of Unidirectional Carbon Fiber/Epoxy Composite in Space by Ali Anvari

“…This composite material has been used in the spacecraft structure due to its lightweight and high strength. Furthermore, with applying thermal fatigue relations, thermally-safe planets, moons, and asteroids in the solar system for unidirectional carbon fiber/epoxy composite are identified.…”
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Megalithic biographies. From partial closures to total closures and from single sealing to double sealing by Dominique Jagu, Claude Masset

“…At two of these sites, evidence shows that heavy "cover slabs" were put in place only after burials had ceased, as a gesture of permanent closure: prior to their installation, only a lightweight, water-tight cover had been present. Although permanently closed, these megalithic structures continued to be visited for some time until they were sealed again, this time with a clearly destructive intention associated with their final abandon.…”
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ANALYSIS OF PRESSURE FLUCTUATION BEHAVIOR DURING THE RAIL GRINDING PROCESS by ZHANG KeYuan, WANG WenJian, GUO Jun, LIU QiYue

“…The optimization of primary locating stiffness of grinding vehicle and the lightweight of grinding mechanism are beneficial to decrease the grinding pressure fluctuation and increase the grinding stability.…”
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Design and implementation of online learning assisted intelligent receiver by Lingjin KONG, Kai MEI, Xiaoran LIU, Jun XIONG, Haitao ZHAO, Jibo WEI

“…To address the issue of reliable communication under complicated scenarios, an online learning-assisted intelligent OFDM receiver was proposed.The variations of the channel environment could be precepted by the receiver, and the optimal parameters of the receiver under the current scenario were obtained by collecting data and training online.In the channel estimation module of the OFDM system, a performance comparator based on the mean square error of noisy channel samples was designed as the indicator of channel environment variations.To accelerate the online training progress, a lightweight neural network structure was applied.The proposed method was further implemented and verified based on universal software radio peripherals.The numerical simulation and over-the-air experimental results demonstrate that the proposed receiver can perceive and adapt to new environments effectively, and outperforms existing machine learning methods in terms of receiving performance and convergence rate with a limited number of pilots.…”
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A Low-Cost PKC-Based RFID Mutual Authentication Protocol by Lili Wei, Qingkuan Dong, Wenxiu Ding

“…Based on the PKC-based RFID authentication protocol cryptoGPS which costs the least resource currently,a low-cost mutual authentication protocol which has a flexible key-management and can realize a mutual authentication was proposed.It adopted a new key-management scheme,an optimized fast Rabin encryption algorithm,low Hamming weight modulus and a lightweight stream cipher algorithm Grain V1,moreover,a new low-cost multiplier was designed to achieve the modulus multiplication on large numbers.The security analysis and simulation experiments carried out on Design Complier with Smic 0.25 μm technique show that this scheme is secure enough and in which the tag just needs 4 530 gates,it is suitable for RFID system.…”
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CRASHWORTHINESS DESIGN AND OPTIMIZATION FOR COLLISION POST OF TRAIN by SHI YueQing, QIN RuiXian, CHEN BingZhi

“…The optimization results show that the total energy and specific energy absorption of the novel multi-cell collision post are improved significantly while meeting the structural lightweight requirements compared with the conventional single-cell structure.…”
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Efficient pairing-free CP-ABE based on ordered binary decision diagram by Sheng DING, Jin CAO, Hui LI

“…To improve the computational efficiency of ABE,its access structure was optimized and a pairing-free CP-ABE scheme based on ordered binary decision diagram (OBDD) was proposed.Based on the elliptic curve cryptography,the complex bilinear pairing operation in traditional CP-ABE was replaced with the relatively lightweight scalar multiplication,thus the overall computation overhead was reduced.And OBDD was used as the access structure of CP-ABE,which can not only represent any Boolean expression about attributes,but also support both positive and negative attributes.The length of the key was independent of the number of attributes and the length of the ciphertext was only related to the number of valid paths in the access policy.The security and performance analysis show that the scheme can resist chosen plaintext attack under the decisional Diffie-Hellman (DDH) assumption,and the computation efficiency can meet the practical application requirements of Internet of things.…”
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STRUCTURAL RELIABILITY OPTIMIZATION DESIGN OF REINFORCED SHELL MODEL BASED ON ADAPTIVE SURROGATE MODEL by LIU YuZhuo, CAO LiXiong, WU JianGuo, LI HaiBo

“…Reinforced shell structure is widely used in aerospace load-bearing structures because its high specific stiffness and specific strength.By considering the uncertainty and risk factors in the structural parameters，the Reliability-Based Design Optimization （RBDO） can avoid the overly conservative design of the structure and ensure its reliability and safety.An efficient RBDO method based on adaptive agent model was proposed.This method solves the problem of lightweight design of reinforced shell structure under buckling reliability constraints.The adaptive addition of sample points was implemented through the expected feasibility function criterion，and the discrete variables was continued by constructing piecewise functions.This increases optimization efficiency while ensuring the reliability of design results.Finally，the effectiveness of the proposed method is verified by comparing the RBDO results with the deterministic optimization results.…”
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A Portable Piezoelectric Tactile Terminal for Braille Readers by Ramiro Velázquez, Hermes Hernández, Enrique Preza

“…The Braille version of the eBook is then encrypted as a file and stored in a USB memory drive which is later inserted and reproduced in a compact, lightweight, and highly-portable tactile terminal. In particular, this paper presents a piezoelectric ultrasonic actuation approach to design and implement such portable Braille terminal. …”
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Study on virtual computing resource scheduling for network performance optimization by Yu-wei WANG, Min LIU, Bing-yi FANG, Chen-chong QIN, Xiao-long YAN

“…A deep insight into the relationship between vCPU scheduling and I/O transmit in Xen was provided.Then an effective and lightweight recognition method,through which could identify the so-called NSVM (network queuing sensi-tive virtual machine) that was more vulnerable to the congestion in I/O transmit was put forward.Furthermore,a novel mechanism for resource assignment and scheduling called Diff-Scheduler was proposed.It could schedule the vCPU of the NSVM more frequently than other VM in different pools independently.Evaluations based on a prototype of Xen platform featured Diff-Scheduler show that the proposed mechanism significantly improves the network performance of VM.Specifically,comparing with the default mechanism of Xen,Diff-Scheduler proposed jointly enhances throughput,latency remarkably and ensures the fairness of resource allocation at the same time.…”
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EXPERIMENTAL AND NUMERICAL SIMULATION OF ELASTIC HONEYCOMB STRUCTURES BY 3D PRINTING (MT) by HOU YunYou, ZHANG Jie

“…Transportation and human protection industry constantly demands for lightweight and better energy absorption materials and structures. …”
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Structure Design and Research of Humanoid Hand based on the Micro Motor Driven by Kou Xiaochen, Zhang Lei, Guo Shaofei

“…In order to realize the integration,intelligent,and lightweight of the humanoid hand,by using the micro motor with the rope combination of turbine disk drive way,the model of finger is made by 3D printer and the hand size is 1: 1,total weight is 300 g. …”
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Container intrusion detection method based on host system call frequency by Yimu JI, Weidong YANG, Kui LI, Shangdong LIU, Qiang LIU, Sisi SHAO, Shuai YOU, Naijiao HUANG

“…Container technology has become a widely used virtualization technology in cloud platform due to its lightweight virtualization characteristics.However, it shares the kernel with the host, so it has poor security and isolation, and is vulnerable to flood, denial of service, and escape attacks.In order to effectively detect whether the container is attacked or not, an intrusion detection method based on host system call frequency was proposed.This method took advantage of the different frequency of system call between different attack behaviors, collected the system call generated when the container was running, extracted the system call features by combining the sliding window and TF-IDF algorithm, and classified by comparing the feature similarity.The experimental results show that the detection rate of this method can reach 97%, and the false alarm rate is less than 4%.…”
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Digital fiber length determination for injection molded glass fiber reinforced composite materials by Andreas Grießer, Nelly Nunheim, Oliver Rimmel, Erik Glatt, Anne Blumer, Hans Hagen, Andreas Wiegmann

“…  Fibrous materials are essential in industries such as lightweight automotive materials [1] [2], filtration [3], and hygiene products [4]. …”
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A Game Theory Based Strategy for Reducing Energy Consumption in Cognitive WSN by Elena Romero, Javier Blesa, Alvaro Araujo, Octavio Nieto-Taladriz

“…The strategy presented is lightweight but still has higher energy saving rates as compared to noncognitive networks and even to other strategies based on scheduled spectrum sensing. …”
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Characterization of Scoria Rock from Kisoro As an Aggregate in Concrete. by Ayebale, Sam

“…Many of them have not yet been investigated, although few have been used as binders, floor beds and aggregates in lightweight concrete for a very long time. The use of scoria aggregates could be considered as a common practice in the construction industry due to the related economic, ecologic and performance benefits. …”
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