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Now showing items 1 - 16 of 1576

  • TOP-LEVEL DOMAIN NAME MANAGEMENT METHOD AND SYSTEM BASED ON ALLIANCE CHAIN

    The present invention is applicable to the field of Internet technology improvement, and provides a top-level domain name management method based on a blockchain. The top-level domain name management method comprises the following steps: A. constructing an alliance network in a block chain by using a TLD node; B. layering a system architecture in the alliance network to separate operations from data; and C. by means of a consensus process, enabling the nodes in the alliance network to agree. By means of a more concise and efficient consensus process, the security and reliability of a system can be ensured, and the efficiency of the system is improved; and the structure of the system is layered to ensure the efficiency and portability of the system.
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  • LOW PROFILE SCREW BASE AND ASSEMBLY METHOD FOR POSITIONING COMPRESSION RING

    A low profile screw base and an assembly method for a positioning compression ring thereof. The low profile screw base comprises a screw base body (3) and a positioning compression ring (4). An assembly hole penetrates longitudinally through the screw base body (3). A U-shaped slot (2) for a connecting rod to pass through is provided on an upper portion of the screw base body (3). The inner wall of the screw base body (3) on the opposite sides of the U-shaped slot (2) is provided with internal threads (1). Snap tabs (6) are formed on the inner wall of the screw base body (3) on the opposite sides of the U-shaped slot (2) below the internal threads (1). A lower ball socket matched with the round head of the round head screw is arranged in the assembly hole of the lower portion of the screw base body (3). The positioning compression ring (4) used for compressing the round head is snap fitted above the lower ball socket and below the snap tabs (6). The positioning compression ring (4) comprises a cylindrical annular body (7). An upper ball socket matched with the round head is provided at a lower end of the annular body (7). A rod containing groove (10) matched with the connecting rod is provided at an upper end of the annular body (7). Limiting flange rings (8) matched with the snap tabs (6) are provided on the upper portion of the annular body (7) on the left side and right side of the rod containing groove (10). A rotation-preventing lug (9) is provided on the outer wall of the annular body (7) above the limiting flange rings (8), and a rotation-preventing groove (5) matched with the rotation-preventing lug (9) is provided on the snap tabs (6). The screw base has the advantages of small diameter and low profile.
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  • Mim: A Merge Iteration and Its Applications for Big Data

    Song, Jie   Wang, Han   Zhang, Yichuan   Bao, Yubing   Yu, Ge  

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  • Off-road Path Planning Based on Improved Ant Colony Algorithm

    Wang, Han   Zhang, Hongjun   Wang, Kun   Zhang, Chen   Yin, Chengxiang   Kang, Xingdang  

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  • Evaluation of Landscape Ecological Integrity in the Yulin Region, China

    Shi, Yuqiong   Wang, Ninglian   Li, Tuansheng   Wang, Han   Kang, Huanhuan   Shi, Xiaohui  

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  • Hot corrosion behaviour of Al-Si coating in mixed sulphate at 1150 ˚C

    Wang, Hongyu   Zhang, Xiang   Xu, Zeng   Wang, Han   Zhu, Changshun  

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  • Chemical Redox-Cycling for Improving the Sensitivity of Colorimetric ELISA

    Chen, Zhaopeng   Wang, Han   Zhang, Zhiyang   Chen, Lingxin  

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  • METHOD OF INSPECTING AGING STATE OF COMPOSITE INSULATING MATERIAL

    A method of inspecting an aging state of a composite insulating material comprises the following steps: S1, bombarding, for multiple times and by a pulsed laser beam, selected points on the surface of a composite insulating material to be inspected, to generate a plasma, and measuring, for each bombardment, a bombardment depth formed in the composite insulating material; S2, collecting spectrum information of emission of the plasma at each bombardment, and extracting, from the collected spectrum information, a spectral property indicator of a specific component of the composite insulating material at each bombardment, wherein the spectral property indicator at least comprises a spectral-line intensity characteristic of a characteristic spectral line; S3, determining a change pattern of the spectral property indicator of the specific component with respect to the bombardment depth; and S4, determining aging state information of the composite insulating material according to the change pattern of the spectral property indicator of the specific component with respect to the bombardment depth, wherein the aging state information at least comprises aging depth information of the composite insulating material. The method enables rapid and accurate inspection of an aging state of a composite material, and avoids destructive tests required in the prior art.
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  • cGAL, a temperature-robust GAL4–UAS system for Caenorhabditis elegans

    Wang, Han   Liu, Jonathan   Gharib, Shahla   Chai, Cynthia M   Schwarz, Erich M   Pokala, Navin   Sternberg, Paul W  

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  • METHOD FOR TESTING SURFACE HARDNESS OF COMPOSITE INSULATING MATERIAL

    A method for testing the surface hardness of a composite insulating material, comprising the following steps: S1, preparing a composite insulating material sample of which the surface hardness has been measured; S2, using laser-induce breakdown spectroscopy (LIBS), using a pulsed laser beam to irradiate the surface of the composite insulating material sample, capturing the laser plasma spectroscopy of the surface; S3, establishing a functional relationship between an ion line and atomic line ratio of a selected element from the laser plasma spectroscopy and surface hardness; S4, using LIBS, using a pulsed laser beam to irradiate the surface of a composite insulating material to be tested, capturing the laser plasma spectroscopy of the surface; S5, according to the laser plasma spectroscopy obtained in step S4, determining the surface hardness of the composite insulating material to be tested, on the basis of the functional relationship between the ion line and atomic line ratios and the surface hardness. This method can be used for a remote and electric on-field test of the composite insulating material, so as to quickly obtain accurate surface hardness of the composite insulating material.
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  • The Analysis and Research on Continuous Improvement of Grid Material Quality

    Tang, Guangrui   Wang, Han   Lu, Qiang  

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  • SINGLE-TRACK ABSOLUTE GRATING SCALE AND IMAGE ENCODING METHOD THEREOF

    A single-track absolute grating scale and image encoding method thereof, comprising a light source, a reflector, incremental scale grating lines, a glass substrate, a movable diaphragm, a photoelectric receiver, and an indication grating; the light source and the reflector are combined into an illumination light path; the incremental scale grating lines having the same width are engraved on the glass substrate at equal intervals; milestone flags are engraved in parallel at equal intervals below the incremental scale grating lines on the glass substrate; the indication grating is embedded in an opening at the left upper part of the movable diaphragm; an upper and a lower CMOS sensors are respectively embedded in an upper and a lower symmetrical openings on the right of the movable diaphragm; the indication grating is installed closely against the glass substrate; the installation position of the upper CMOS aligns to the incremental scale grating lines; the installation position of the lower CMOS aligns to the milestone flags; and the light beams of the incremental scale grating lines and the indication grating form Moire fringes projected onto the photoelectric receiver. The present invention improves the acquisition speed of image information, improves code measurement accuracy, and can reliably encode, simply decode and quickly output a result.
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  • Cross-domain structural model for video event annotation via web images

    Wang, Han   Liu, Xiabi   Wu, Xinxiao   Jia, Yunde  

    Annotating events in uncontrolled videos is a challenging task. Most of the previous work focuses on obtaining concepts from numerous labeled videos. But it is extremely time consuming and labor expensive to collect a large amount of required labeled videos for modeling events under various circumstances. In this paper, we try to learn models for video event annotation by leveraging abundant Web images which contains a rich source of information with many events taken under various conditions and roughly annotated as well. Our method is based on a new discriminative structural model called Cross-Domain Structural Model (CDSM) to transfer knowledge from Web images (source domain) to consumer videos (target domain), by jointly modeling the interaction between videos and images. Specifically, under this framework we build a common feature subspace to deal with the feature distribution mismatching between the video domain and the image domain. Further, we propose to use weak semantic attributes to describe events, which can be obtained with no or little labor. Experimental results on challenging video datasets demonstrate the effectiveness of our transfer learning method.
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  • Pilot Pattern Optimization for Sparse Channel Estimation in OFDM Systems

    Wang, Han   Guo, Qing   Zhang, Gengxin   Li, Guangxia   Xiang, Wei  

    Compressive sensing (CS) based sparse channel estimation requires optimal pilot patterns, whose corresponding sensing matrices should have small mutual coherences, so as to efficiently exploit the inherent channel sparsity. For the purpose of minimizing the mutual coherence of the sensing matrix, we introduce a new estimation of distribution algorithm (EDA) to optimize the pilot pattern so as to improve the channel estimation performance. The proposed scheme guides the optimization process by building and sampling the probability distribution model of the promising pilot indexes, and approaches the optimal pilot pattern iteratively. The algorithm is able to not only preserve the current best pilot indexes, but also introduce diversity by sampling new ones, and hence is unlikely to trap into local minima and more robust than other methods. Simulation results show that our proposed method can generate sensing matrices with smaller mutual coherences than existing methods, and the corresponding optimized pilot pattern performs well in terms of sparse channel estimation.
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  • Six-Membered Janus-type Ditopic N-Heterocyclic Carbene Coinage Metal Complexes

    Hu, Zejun   Ma, Xufeng   Wang, Jiwei   Wang, Han   Han, Xiaoyan   Shi, Min   Zhang, Jun  

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  • MEASURING METHOD AND DEVICE FOR INSULATOR SURFACE EQUIVALENT SALT DEPOSIT DENSITY

    A measuring method and device for insulator surface equivalent salt deposit density. The measuring method comprises the following steps: S1, focusing a pulsed laser light source on a contaminated surface of an insulator to be detected, using the laser source to emit laser with a pulse width smaller than or equal to 20 ns to induce contamination substances on the surface of the insulator to form plasma, and acquiring spectral information emitted by the plasma in an expansion cooling process; S2, establishing a relation model between the density of ions in common soluble salts in contamination substances on the surface of the insulator and spectral features after the plasma is generated by means of excitation of the laser; S3, inputting the spectral information acquired in S1 into the relation model in S2, and performing analysis to obtain the ion composition of the contamination substances on the surface of the insulator to be detected and ion density of the ions; and S4, calculating the equivalent salt deposit density of the contamination substances according to the ion density of the ions. Without the need of sampling while power outage, the measuring method and device can implement online measurement of contamination components and the equivalent salt deposit density.
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