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A new lightweight stream cipher, SVH, is proposed. The design targets hardware environments where gate count, power consumption and memory is very limited. It is based on dual pseudo-random transformation and output feedback. The block of key size is 64 bits and SVH can achieve sufficient security margin...

This paper investigated the nonlinear distortion of high-order modulated signals generated at high power amplifiers(HPA) in remote sensing satellite communications. An improved pre-distortion structure is proposed for the problems existing in traditional methods, and an adaptive adjustment algorithm...

In saliency based video coding, the salient parts of the each frame are encoded with higher quality than non salient areas to improve the signal to noise ratio and get higher compression ratio. In this paper, the background of the saliency based video perceptual coding technology is introduced first....

With microcrystal muscovite (MCM) as the carrier, butyl titanate as the source of titanium, acetic acid as the inhibitors, copper nitrate as dopant, Cu-doped nano-TiO2/MCM composites were prepared by the sol–gel method. Then the composites were calcined at 500 oC for 2 hours. The samples were characterized...

Based on direct sequence spread spectrum, M-ary spread spectrum, multicarrier code division multiple access (CDMA), orthogonal frequency division multiplexing (OFDM) technology, etc., a new wireless communication anti-interference system, i.e. multi-sub-channels spread spectrum (MSCSS) system, has been...

The rapid growth of Internet of Things (IoT) devices in outdoor environments raises critical concerns about secure key establishment. Conventional cryptographic methods often depend on pre-distributed keys or computationall intensive algorithms, which are unsuitable for resource-constrained IoT nodes....

Rate estimation is useful for many H.264/AVC applications including rate-distortion optimization (RDO) for fast mode decision and precise rate control. In this paper, we propose a new header rate prediction model and an adaptive algorithm to provide more accurate estimation of the number of total coding...

The main independent controllable parameters in drilling oil and gas wells are the weight on bit and the frequency of bit rotation. When drilling deep directional wells with horizontal sections of the wellbore, the weight comes to the bottomhole with a delay due to increased frictional forces during...

In the paper we introduce a hybrid compression algorithm, which is the co- mbination of Huffman algorithm and RLE algorithm, for compressing the GPS data. This algorithm acquires statistical characteristics of GPS data according to the NMEA0183 protocol, mixes Huffman algorithm and RLE algorithm to compress...

MgAl2O4 spinel, as support of the 10Ni/MgAl2O4 catalyst which used for coke oven gas dry reforming, was prepared by sol-gel, coprecipitation and urea hydrolysis method. The catalysts were prepared by impregnation. The MgAl2O4 and 10Ni/MgAl2O4 were both calcined at 800 oC for 5 h and the samples were...

Development of effective bottom hole cleaning equipment from junk is an effective way of enhancing productivity of drilling operations. The article describes the construction of the near-bit for enhancing bottom cleaning of vertical, slanting and horizontal wells from junk during drilling by a roller...

Accurate measurement of passengers’ walking speed is significant for evaluating and optimizing service level of the facilities in transfer stations. This paper studies the walking speeds of various transfer passengers on the upstairs of Beijing Haidian Huangzhuang Subway Station during evening peak hours...

Several SO3H-functionalized acidic ionic liquids (ILs) were synthesized by two-step method, using 1, 3-propane sulfone and 1, 4-Butanesultone as raw materials, respectively. It is noteworthy that the ionic liquid using 2-ethyl-4-methylimidazole as source has not been reported. Esterification of 1-butanol...

The varieties and interspecies hybrids of potato selected on the basis of Ural Scientific Research Veterinary Institute Federal State Budgetary Scientific Institution "Ural Federal Agrarian Scientific Research Centre, Ural Branch of the Russian Academy of Science" (Ural national research institute of...

Occlusion detection and automatic adaption of a generic pedestrian detector to a specific scene are difficult problems in intelligent monitoring. When a detector trained in a specific scene is applied on a new scene, its accuracy will decrease greatly. To solve this problem, we propose a new detection...

The organosilicon-acrylic resin/LDHs nanocomposite was prepared from acrylate, organosilicon Mg-Al-AA-LDHs as well as emulsifier etc with emulsion polymerization methods. The samples prepared were characterized by optical , thermal and gas barrier capabilities testing, Results show the samples were nanocomposion...

Rigid polyurethane foams (RPUFs) were prepared by heteroaromatic polyol as the matrix polyol, methylphosphonate (DMMP) was added to improve its flame retardancy, and the relative performances were studied. Thermal stability were measured by dynamic mechanical analysis (DMA) and thermo gravimetric analysis...

In orthopaedic surgery internal fixation of bone fractures using immobilization screws and plate is common procedure. This surgical procedure involved drilling into bone and fixative components interaction. Many problems are encountered with the bone drilling process such as holes accuracy, drill wander...

The transmission channel of massive MOOC teaching resource information management system under routing conflict is easily affected by multipath effect, which leads to poor balance of teaching resource scheduling and high bit error rate. In order to improve the channel resource equalization scheduling...

For the realization of the industrial production of automatic data collection and intelligent exploration missions, a line tracking robot based on MSC1210 MCU is designed. Through demonstration and comparison of several design schemes, completed the hardware design of automatic line tracking robot.The...

IEEE 802.11a, Wireless Local Area Network (WLAN), is a wireless broadband technology, which is used as substitute of wired Ethernet as well as in public hot sport wireless network because of its higher data rates compared to cellular mobile networks. In order to provide higher data rate and to mitigate...

Sepiolite as catalyst carrier material, now commonly used in low temperature, for high temperature applications was very rare. ZrO2/sepiolite precursor was prepared by Chemical precipitation method, catalyst coating material was prepared at 600 , the samples were aged at 1000 . The powders with and without...

Kinmen and Xiamen have been the battle-front of two Chinese campaigns for many years. Yet, through recent efforts, they are becoming a cross-border city. The offering of robust, trustable social order, whose peace image can be justified through the world media, is essential. Hence, the hypercube, Qn...

Dispersion is one of the basic problems in the optical fiber communication. Chromatic dispersion is one of this type of dispersion. Nowadays we require high data transmission without any substantial loss in a communication system, so optical communication serves as a better choice for high data rate...

In the approach of the Heart of Psychology, based on “the myth is a METAPHOR for workings of the archetype, this paper finds that the classic heroic mythology of Pan Ku (盘古) and Kua Fu (夸父) embodies the two aspects of the Chinese cultural individuation — natural development and trauma transformation:...

Because of the strong alkalinity and large amount of heavy metals in red mud, many countries have paid more attention to red mud. According to the traditional treatment method, an innovative scheme is proposed in this paper, which uses red mud (RM), ground granulated blastfurnace slag (GGBS), fly ash...

Impulse interference is one of the major interferences in power system, and the existed algorithms mainly focus on narrow-band interference when using wireless communication, which have little effect on impulse interference. Aiming at this problem, this paper proposes an impulse interference suppression...

To reduce the intra encoding complexity of HEVC, a fast intra prediction mode decision algorithm is proposed in this paper. According to different size of prediction unit, based on statistical data, the algorithm uses threshold method to exclude the intra prediction modes of small possibility, then reduce...

This paper is briefly discussed the theory of Sigma-Delta modulator, analyzed the performance of L-order single bit Sigma-Delta modulator. A system modeling for 2nd order Sigma-Delta modulator is simulated. Under laboratory conditions, An acoustic amplifier with Sigma-Delta modulation and PWM modulation...

This paper consider the problem of recognition of (n, k, m) convolutional code from a corrupted bit stream in a reverse-engineering communication system. A new method based on the properties of convolutional encoders and local decision was proposed, which can construct any rate k/n convolutional encoders...

According to the practical condition and traditional design parameters of the oblique hole drilling, the mechanical model for the oblique hole drilling is established. With the finite element analysis software, two conditions are analyzed: the bit is not completely drilled into the workpiece, and the...

Hexagonally ordered mesoporous silica SBA-15 was successfully synthesized for the first time using natural clay from low-grade potash ores of a salt lake in Qinghai, China, without addition of silica reagents. The influence of changes in processing parameters, such as activation method, hydrothermal...

In order to analysis marine detection performance of the satellite-based AIS receiving system and provide a reference for related algorithms, the relationship between signal detection bit error rate(BER) and detection probability is analyzed and simulated, besides, the detection BER is simulated at different...

The influence of curing temperature on the deformation properties of magnesium oxide(MgO) micro-expansive concrete were studied.Hydration mechanism and expansion characteristics of magnesium oxide(MgO) in cement paste were analyzed by XRD DSC-TG and SEM. Results indicated.Curing temperature had a great...

The implementation of learning with a limited face-to-face meeting system. After online learning since the covid-19 pandemic, children are again getting a little bit of happiness in being able to interact and socialize at school. Therefore, the development of motion learning models through group competition...

This paper presents the design and implementation of a true random number generator (TRNG) for smart card application. Based on the effect of the oscillator phase noise and meta-stable state of the trigger, the random number is generated. An efficient calibration method can correct the uniformity of...

Motion estimation plays an important role in H.264 video compression process. However, it takes 60%-80% of the encoding time. In this paper, an improved motion estimation algorithm based on UMHexagonS algorithm is proposed, including three aspects which are improvement on unsymmetrical-cross search,...

Aerides odorata is a species that belongs to the Orchidaceae family and lives as epiphytic orchids. This orchid is distributed across Southeast Asia, India, and China. This orchid occupies one type of habitat. Morphological characters of flowers in this species vary, depending on the habitat occupied....

Arm manipulator is one type of robot that is widely applied in the industrial world. Robots of this type are commonly used to help people in the hard work, dangerous or repetitive work. The needs of industrial machine in Indonesia have been increasing based on industrial development that has been increasing...

IBE (Identity-based Encryption) technology, no digital certificates, is user-friendly and convenient for back-office management. It simplifies the key management process of a public key cryptosystem and diminishes the cost of application. This paper presents the thought of IBE systems, and analyzes the...

The distortion of transmission signal ,when passed through the channel of the Expendable Conductivity-Temperature-Depth (XCTD) profiler under the influence of the probing depth, transmission frequency, random noise and other factors, will be more serious. And it will affect the stability and accuracy...

This paper presents an experimental study on the static indentation tests on six types of rocks namely marble, limestone, basalt, steel gray granite, moon white granite and black galaxy granite using commercial drill bits (indenters) of spherical button type of 35mm, 38mm, 45mm and 48mm diameter to determine...

Intangible cultural heritage is an important symbol to recognition different ethnics. In order to enhance the copyright protection and authentication of intangible cultural heritage, this paper presents a novel way to process the carried image that Li brocade. Firstly, Li brocade image was decomposed...

This paper will improve the spectral amplitude coding is used for OCDMA wavelength division multiplexing passive optical network system. Improved the system bit error rate of less than 10-10, multiple access interference suppressed to some extent, the performance of the transmission network stable and...

In the present scenario the world is moving towards automated systems. To design a hardware which is able to interact via internet is a challenging task in design of any automation system. A new term known as ’Internet of things’ also faces the same kind challenge, of interfacing a dumb electronic terminal...

CGF (Coverage-guided fuzzing) has found a large number of software vulnerabilities with its low cost and adaptability. CGF mutates at the bit or byte level, so most of the mutated test cases cover the same paths. But no previous work had quantified the percentage of test cases that covered the duplicate...

The Fe doped TiO2 (FET) gels were synthesized by different ferric salts and analyzed by thermal gravimetric analyzer and X-ray diffraction. The TG curves show that the valence states of Fe had a great influence on the preparation of FET gels, Fe3+ was easy to replace titanium atoms to form lattice and...

For mobile satellite systems, quality of service and service availability depend on the line-of-sight satellite availability. The satellite visibility is one of the major factors which influence satellite link availability, since the satellite channel behavior is depended on the link conditions between...

Universal combinatorial coding is a unique coding. It is based on the principle of permutation and combination. It has the multiple coding features and has a wide variety of applications. The sequence is handled by universal combinatorial coding and the result includes the ordinal, the frequency table,...

Experience over the few years has proved that rotary percussion technology is an effective method to improve the rate of penetration in drilling petroleum wells. The drilling speed of the rotary percussion drilling is about forty percent larger than the common drilling. Research finds that rotary percussion...