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Group delay distortion between channels is one of the most important factors which affect the BER (bit error rate) performance of DBF (digital beam forming) System. The basic principles of DBF and the concept of group delay are first introduced, and a linear group delay filter is designed based on the...

A new linear 10-undecenoic acid-based diol and a chain extenders with 12C dangling chain length were synthesized via thiol-ene coupling and esterification reaction. In order to investigate the effect of the 10-undecenoic acid-based diol chain extender, the mole percent of the 10-undecenoic acid-based...

The development and orientation of bit-coin is the forefront of currency issue for it is directly related to the currency position of bit-coin and affects the progress direction of the world economy. At present, there are serious differences in people’s discussion about the orientation of bit-coin, the...

In the lunar rock drill mission, the drill bit design is restricted by the environment and system load. As the executive unit of the drill bit, the cutter and its material decides the drilling system’s penetration performance. In this paper, a new kind of surface set PCBN drill is developed, and the...

Chinese opera, as a vital medium for inheriting the exemplary traditional Chinese culture, has Cantonese Opera as one of its integral components, renowned for its unique regional characteristics. However, Cantonese Opera currently faces challenges such as a limited and aging audience, making it difficult...

Many educational organizations and universities are using computer based management information system for increasing efficiency of work in the organizations. Library management plays a vital role in academic organizations. Bar code is one of the computer based technology which helps to increase efficiency...

Purpose: to discuss the function of polydatin on regulating blood-lipid and anti-atherosclerosis. Method: feed rats with high-fat diet to establish early atherosclerosis model, after the model is established successfully, feed with high, medium and low dose of polydatin (160 80 40mg•kg-1•d-1), 8 weeks...

In this paper, an multi-mini-partition intra block copying (MMPIBC) coding technique for screen contents is presented. In MMPIBC coder, a Coding Unit(CU) with size 8x8 is firstly broken into multiple mini-partitions. Each mini-partition of CU separately select the displacement vector(DV) with the same...

In the scientific and engineering domain of nanotechnology, the goal is to make highly efficient devices smaller. Quantum-dot Cellular Automata (QCA) are a new technology that may be used at high speeds with minimal power consumption and a straightforward design. We design a novel 4-bit memory unit in...

Cyclic Redundancy Check (CRC) is widely used for error detection in communications. As data transfer rates increase, traditional serial CRC algorithms face performance bottlenecks, making it difficult to meet high-speed transmission needs. To address this, researchers have turned to parallel CRC computation,...

The capacity and the distortion are the two important indexes in the information steganography field. The research tries adopting the famous Median Edge Detection to judge the flat area and the complex area, combining the concept of the Human Vision System to embed a fewer confidential information. A...

Correlation analysis is a basic problem in the field of data stream mining. Traditional method is not suitable for real time processing with huge amount of stream data. We propose a new method based on Boolean representation for lag correlation analysis among multiple data streams. The raw stream sequence...

Speed of the arithmetic operations often depends upon formation and propagation of carry. With the binary number system, the speed of arithmetic operations such as addition and subtraction is limited by formation and propagation of carry especially as the number of bits increases. The recent rapid increase...

High efficiency in drilling is measured by Mechanical Specific Energy (MSE). MSE can be expressed mathematically in terms of controllable parameters Weight on Bit (WOB), Rate of Penetration (ROP), Revolutions per Minute (RPM) etc. Once the optimum WOB was determined, the correlation with Torque and Penetration...

Heze was once one of the economically underdeveloped cities in southwestern Shandong Province, in recent years, socio-economic development has been achieved and there has been great progress in urban construction, in the context of “urban double repairs” to discuss the issues of Heze’s urban style and...

A resource efficient hardware implementation method of polar decode is presented in this paper. It supports the configuration of bit allocation table with various code lengths and rates. The hardware implementation based on Successive Cancellation List Decoding (SCL) scheme makes BER (Bit-Error-Rate)...

To enrich the basic theory of the reductive decomposition process of PG(phosphogypsum), emphasis was laid on the exploration of the impact of the main impurities on the process. Firstly, the simulation computation was done on the systems of pure gypsum mixed with coal with or without impurities under...

Microdrills' torsion vibration modes including the natural frequencies and modal shapes were studied by the theories on interspace kinematics, mechanism vibration and elastodynamics; Based on the theory analysis, a 3D model of micro-drill was designed by the Pro/E software, its torsion vibration modes...

A portable, low power, digital spectroscopy for CdZnTe (CZT) detector is designed and described in this paper. Its readout electronics is implemented with waveform sampling, Flash-based FPGA (Field Programmable Gate Array) and USB (universal serial bus) technique. The CZT detector, with an effective...

System-on-Chip (SoC) devices integrate various sub-circuits utilizing both parallel and serial communication protocols. Among these, the Inter-Integrated Circuit (I2C) protocol stands out as an 8-bit serial communication bus that facilitates direct communication between integrated circuits (ICs). In...

In order to ensure food security, a design scheme about temperature and humidity data logger for small refrigerator that could monitor temperature and humidity of the environment in real time was proposed. The recorder uses 32-bit RX631designed by Company RENESAS as the controller chip and the paper...

Analog signal often sampled by A/D conversion in engineering practice,due to external interference and incorrect circuit design, will cause sample accuracy reduce. In order to rejection interference, first a differential input voltage will be magnified by instrumentation, it can rejection noise first,...

The High Altitude Platform Station (HAPS) wireless communication channel performance of space near network is investigated. The probability density function is derived. The HAPS commutation system model is built. Then, mathematical model under different conditions is evaluated through numerical simulations...

The neutron detector of HIRFL (Heavy Ion Research Facility at Lanzhou) has been designed for in-beam nuclear experiments, capable of measuring neutron energy and discriminating neutrons from gamma-rays. The read-out electronics, receiving charge signals from photomultipliers of the neutron detector,...

The adsorbent H8Nb22O59•8H2O and its precursor Rb8Nb22O59 were prepared to produce high-purify NaCl. Their characteristics were studied by X-ray diffraction (XRD), thermogravimetric and differential scanning calorimetry (TG-DSC) and scanning electron microscope (SEM). Two main calcinations factors of...

The hand-held excavator was particularly designed for artificial excatating pile drilling. It consisted of a motor, a gear reducer, a drill stem, a frame and a drill bit. The drill stem was an important component of the hand-held excavator. In order to improve the drilling speed of the excavator, the...

ADS-B will significantly increase the availability and quality of air traffic surveillance of future air traffic management systems. The circuit design of traditional ADS-B receiver based on superheterodyne receiving is complex but the sensitivity is not so satisfactory. This paper proposes a novel high-sensitivity...

With the growing phenomenon of an aging population, Intelligent Health Surveillance technology has been developing rapidly. Meanwhile, as of things, the development of computer vision and other information technology to make rapid growth of Intelligent Health Surveillance data and diversified characteristics....

Perfluorinated sulfonic acid ion exchange membrane doped the silicotungstic acid thermal stability and thermal degradation kinetics were studied by means of thermal gravimetric analysis in a nitrogen atmosphere, the heating rate used respectively was 5, 10, 20 and 30 /min. Using the Kissinger, Flynn-Wall-Ozawa,...

Eu3+doped -Bi2MoO6 red uminescent powder is prepared by co-precipitation method in this paper. Structure and constitution of powder samples are examined by DTA-TG, XRD and IR. Results showed that: quadrature phase -Bi2Mo3O12 is achieved when anneal temperature is 800 and pH is below 3; while quadrature...

An asynchronous First-In-First-Out (FIFO) is a fundamental data storage and buffering mechanism designed to operate across different clock domains, where the read and write operations are driven by separate, and asynchronous clock sources. This characteristic makes asynchronous FIFOs an essential component...

Secure communication in wireless sensor networks (WSNs) is a challenging problem due to the scale and resource limitations. This means that most existing security protocols such as cryptography are not applicable in WSNs. However, more recent researches argue that encryption based on compressed sensing...

Cloud computing is a technology model in which resources such as computer components (processor, memory, network, storage) are no longer real problems, but abstract. One cloud service is Cloud Storage. With Cloud storage facilities, users can store digital data that is kept secret securely via the internet...

Cationic starch-based hydrogel was synthesized by simultaneous gamma irradiation of starch (St), acrylamide (AAM), allyl triphenyl phosphonium bromide (APB) and N,N'-methylene bisacrylamide (MBA) as cross-linker in aqueous solution. The molecular mass of the un-grafted AAM/APB copolymer, the cationic...

In this paper, a 7-bit 16-MSample/s current-steering CMOS digital-to-analog (D/A) converter is presented. Current steering architecture consists of binary-weighted cells, the post-layout simulation results show that the SFDR and ENOB are more than 52.50 dB and 6.97 bit with a 1.984MHz input. The integral...

There were many researches that discussed about performance of Ad hoc on Demand Distance Vector (AODV) in Mobile Ad-hoc Network (MANET). Some of them used mobile velocity and traffic congestion as variables in their observation. This research becomes very important because the writer of this paper was...

Five kinds of Brønsted-acidic ionic liquids with different nitrogen-contained chemical groups and different anions were synthesized, and were respectively characterized by nuclear magnetic resonance(NMR), infrared spectrum (IR), electrospray ionization mass spectrum (ESI-MS) and thermogravimetry(TG....

A systematic solution based on the design of a heterogeneous code is proposed to promote the unified governance foundation of the existing Internet of Things (IoT). The proposed scheme enables advanced functionalities and maintains the compatibility with applications of the existing identifications (QR...

A novel sulfur ion exchange fiber - thiosemicarbazide chelating ion exchange fiber (TSCIEF) was prepared by nucleophilic substitution reaction of chloramethylated polypropylene graft styrene (CPP-g-St) fiber and thiosemicarbazide, using anhydrous ethanol as swelling agent. The structure of TSCIEF was...

Pitch is one of the most important parameters to describe the speech characteristics. The paper proposed a new pitch detection algorithm for ultra-low-bit-rate vocoder based on dynamic programming as well as frequency-time domain analysis to eliminate the multi-half pitch errors. The algorithm detected...

Reciprocity theorem is proposed to design and analyze R-2R based DAC, which can make the complicated design and analysis of R-2R based DACs simple. The detail of how to use reciprocity theorem in the design and analysis of R-2R based DAC is given. The 14-bit DAC designed by Reciprocity Theorem has performances...

Over the past two decades, the popularity of the ICT has brought humans into an unprecedented era of information. A academia go into in-depth study of related fields, and has made great progress in the fields of information economy, knowledge-based economy, the network economy, and virtual economy. However,...

With the rapid developing of wireless communication technology and the growing user service, the demand on the system capacity from users is growing. In the LTE network, the uneven load distribution makes that network resource is not fully utilized, which results that the capacity is limited. In this...

Safety is crucial in the shipping industry, however in the current export container activity there are many factors that can cause an accident. To prevent an accident, regulation play an important role. With regulation, safety can be implemented to decrease the risk. Therefore, IMO has amended the SOLAS's...

3-triethoxysilylpropylamine (KH550) polymer was coated on quartz fibers by a simple dipping process without any complex chemical treatments in order to increase the bonding strength between quartz fibers and boron doped silicone resin matrix. The effect of coating on the interface of quartz fiber reinforced...

Polyurethane prodrugs with different drug contents were synthesized using polycaprolactone, hexamethylene diisocyanate and ciprofloxacin. The thermal analysis of the materials was carried out by DSC and TG. Results showed that the crystallinity of the materials reduced as the drug contents increased...

A novel adsorbent was prepared by grafted the Dibenzo-18-Crown-6-Ether (DB18C6) on D564 resins and characterized by Thermogravimetry (TG) and Fourier Transform Infrared Spectroscopy (FTIR). Adsorption of Sr2+ from aqueous solutions was investigated in batch method as a function of contact time, concentration...

The article analyzes the negative operator-caused syntactic inversion by Optimality Theory on the basis of Yu’s research and Kager’s research in order to further them. When the moved negative operator causes subject-auxiliary inversion and do-support, the movement of the auxiliary verb is the only optimal...

A highly stable 8T SRAM cell is presented to improve the Static Noise Margin (SNM). The proposed 8T SRAM cell uses a single-bit line structure to perform read and write operation. The design enhances the write ability by breaking-up the feedback loop of the inverter pair. It also improves the read stability...

In order to study the pyrolysis process of Ethylene Propylene Diene Monomer (EPDM) insulation material and its compression mechanical behaviour under high strain rates, the thermal stability of EPDM was analysed by TGA in the first place. Based on the TG curve and the thermal degradation temperature,...