Semi-random and semi-algebraic structural design for IRA-LDPC codes by Li PENG, Qi ZHANG, Bo WANG, Tao CHEN

“…A method of semi-random and semi-algebraic structure was presented for constructing the low-density parity-check matrix that corresponds to the information bits of the IRA codes.Compared with the existing structural LDPC codes,the distinct advantage of the presented compact structural array for information-bit-corresponding matrix is that the position coordinate of each 1 element in this matrix can be calculated by a determinate algebraic expression,which not only reduces the consumption of memory resource for the random parity-check matrix,but also provides the potential probability for designing low complexity hardware circuit of the LDPC encoder/decoder.In addition,compared with the existing practical LDPC codes in industrial standard,the presented IRA-LDPC code is also slight preponderance in the performance of simulation in bit error rate and signal noise ratio (BER-SNB).…”
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Can We Observe the Gravitational Quantum States of Positronium? by P. Crivelli, V. V. Nesvizhevsky, A. Yu. Voronin

“…We provide an estimate of the efficiencies we expect for these steps and assuming those could be confirmed we calculate the signal rate.…”
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DYNAMIC ANALYSIS OF THE GEAR-BOX CASE STRUCTURE BASED ON STIFFNESS COUPLING AND ITS LIFE ESTIMATION OF VIBRATION FATIGUE by GAO Na, FENG HuiHua, YANG ShiQiu, HUANG YongXuan

“…Finally,the vibration fatigue life on the danger area of the gear-box case was calculated and analyzed by the sample assessment method.…”
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A Generalized Multiconductor Transmission Line Model and Optimized Method for the Solution of the MTL Equations by Chaoqun Jiao, Zhanjun Xia, W. N. Fu

“…The numerical results are in agreement with ones calculated by Bergeron's method and FDTD method.…”
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Selected Experimental Results from Heavy-Ion Collisions at LHC by Ranbir Singh, Lokesh Kumar, Pawan Kumar Netrakanti, Bedangadas Mohanty

“…These measurements are compared to model calculations to obtain physical insights on the properties of matter created at the RHIC and LHC.…”
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Confirmation method for the detection of malicious encrypted traffic with data privacy protection by Gaofeng HE, Qianfeng WEI, Xiancai XIAO, Haiting ZHU, Bingfeng XU

“…In order to solve the problem that excessive false positives in the detection of encrypted malicious traffic based on machine learning, secure two-party computation was used to compare character segments between network traffic and intrusion detection rulers without revealing the data content.Based on the comparison results, an intrusion detection feature matching algorithm was designed to accurately match keywords.A random verification strategy for users’ input was also proposed to facilitate the method.As a result, malicious users couldn’t use arbitrary data to participate in secure two-party calculations and avoid confirmation.The security and resource consumption of the method were theoretically analyzed and verified by a combination of real deployment and simulation experiments.The experimental results show that the proposed method can significantly improve the detection performance with low system resources.…”
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Estimating theoretical stress regime for engineered geothermal energy systems in an arctic community (Kuujjuaq, Canada) by Miranda, Mafalda M., Raymond, Jasmin, Dezayes, Chrystel

“…Literature data was used in this context to evaluate the orientation of the stress components and empirical relationships were applied to calculate their magnitude in a community of Nunavik, northern Quebec. …”
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Chatter Prediction for Variable Pitch and Variable Helix Milling by Yong Wang, Taiyong Wang, Zhiqiang Yu, Yue Zhang, Yulong Wang, Hengli Liu

“…Because the delay between each flute varies along the axial depth of the tool in milling, the cutting tool is discrete into some axial layers to simplify calculation. A comparison of the predicted and observed performance of variable pitch and variable helix against uniform pitch and uniform helix milling is presented. …”
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Fault Diagnosis of Roller Bearing based on Hybrid Feature Set and Weighted KNN by Chen Fafa, Li Mian, Chen Baojia, Chen Congping

“…Firstly,those early fault features of roller bearing are calculated based on the signal processing method in time domain,frequency domain and time- frequency domain to construct hybrid feature set. …”
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RESEARCH ON CONTACT DAMPING CHARACTERISTICS OF JOINT SURFACE OF MICRO TEXTURED SURFACE by ZHU ChunXia, LIU Lei, ZHAO Yuan, WANG Ning

“…Further, based on the distribution density function of planar micro bumps, the number of surface contact micro bumps is calculated, and the effects of texture density, material characteristic parameters, frequency and amplitude of applied dynamic load on contact damping are studied. …”
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Effect of Mechanism Error on Input Torque of Scroll Compressor by Man Zhao, Shurong Yu, Chao Li, Yang Yu

“…The change of input torque caused by the mechanism size error was analyzed and verified with an example. The calculation results show that the mechanism size error will cause large fluctuation in input torque at the drive rod and connecting rod collinear and the fluctuation extreme value increases with rotational speed. …”
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Hydrolysis Reactions of p-Nitrophenyl Trifluoroacetate and S-Ethyl Trifluorothioacetate by Jack B. Suggs, Joshua J. Melko

“…We explored differences in the reaction orders with respect to water and examined details of calculated potential energy surfaces of these hydrolysis reactions, highlighting the roles of solvation effects and transition state structures.…”
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Administrative offenses cases number assessment in the Russian regions by D. I. Belyaeva, L. A. Davletshina

“…The deviations of the clusters and regions values from the average Russian level were calculated.…”
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Performance Evaluation of MBA-OLSR Routing Protocol for MANETs by Waheb A. Jabbar, Mahamod Ismail, Rosdiadee Nordin

“…The proposed approach considers the remaining battery energy of the nodes for calculating the initial cost of the multiple links between source-destination pairs. …”
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SEVEN CHANNEL REZZPA UNIVERSAL JOINT STRESS ANALYSIS AND SIMULATION by XIE Kun, GUO ChangNing, YAN GongZhe, SHI BaoShu

“…On this basis,based on the Herzt contact theory,the above force is verified by Adams dynamics.The results show that the simulation results are basically consistent with the theoretical calculation. The circumferential force,the normal contact force,the friction force of the steel ball and the star sleeve and the friction force of the seven channel cage type constant velocity universal joint are less than that of the six channel,and they change with the change of the swinging angle.…”
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Solvent Extraction of Thorium Using 5,11,17,23-Tetra[(2-ethyl acetoethoxyphenyl)(azo)phenyl]calix[4]arene by Quang Hieu Tran, Van Tan Le, Van Cuong Nguyen

“…The tolerance limits for several metal ions were calculated. The proposed method was applied to the determination of thorium in synthetic solution and in the monazite sand samples with good results.…”
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Highly oxygenated cyclohexenes from the leaves of Uvaria grandiflora Roxb. ex Hornem and their cytotoxic and α-glucosidase inhibitory activities by Virayu Suthiphasilp, Moses Egoh Betangah, Passakorn Teerapongpisan, Narawadee Rujanapun, Boonyanoot Chaiyosang, Sarawut Tontapha, Pakit Kumboonma, Brian O. Patrick, Raymond J. Andersen, Rawiwan Charoensup, Thidarat Duangyod, Phunrawie Promnart, Tharakorn Maneerat, Surat Laphookhieo

“…The (1S,2S,3R,6S) absolute configuration of uvariagrandols A and B was established by the comparison of the experimental and calculated electronic circular dichroism (ECD). (+)-Grandifloracin (9) displayed cytotoxicity against SW480 and K562 cell lines with IC50 values of 154.9 and 60.9 μM, respectively. 6-Methoxyzeylenol (5) had α-glucosidase inhibitory activity with the IC50 value of 34.1 μM.…”
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Evaluation of Tunnel Surrounding Rock Quality Based on Composite Weight Grey Relational Analysis by JIANG Pengfei, DU Faxing, WANG Xuerong, ZHOU Jingtao

“…In order to accurately evaluate the stability of tunnel surrounding rock,and reduce the risk in the process of excavation,this paper selects the uniaxial saturated compressive strength of rock,the integrity coefficient of rock mass,the groundwater condition and the state of structure plane as the evaluation indexes of surrounding rock,establishes the combined weight calculation method based on entropy weight method and analytic hierarchy process,constructs the evaluation model for tunnel surrounding rock quality by the grey relational analysis,and verifies the model by the improved BQ method,taking Xishanying tunnel in Yunnan Province as an example.The comparison shows that the evaluation results of grey relational analysis model is highly consistent with that of the improved BQ method.The evaluation model is highly feasible and reliable,which can provide reference for the quality evaluation of surrounding rock.…”
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Spin Splitting Spectroscopy of Heavy Quark and Antiquarks Systems by Hesham Mansour, Ahmed Gamal, M. Abolmahassen

“…By using such terms, we get better accuracy than previous theoretical calculations. In the present work, the mass spectra of the bound states of heavy quarks  cc¯, bb¯, and 𝐵𝑐 mesons are studied within the framework of the nonrelativistic Schrödinger equation. …”
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Temporal Variations in Concentrations of Ozone, Nitrogen Dioxide, and Carbon Monoxide at Osijek, Croatia by Elvira Kovač-Andrić, Tatjana Radanović, Iva Topalović, Berislav Marković, Nikola Sakač

“…In order to characterize ambient air with respect to ozone photochemical pollution we calculated three photochemical pollution indicators. …”
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