Graph compression algorithm based on a two-level index structure by Gaochao LI, Ben LI, Yuhai LU, Mengya LIU, Yanbing LIU

“…The demand for the analysis and application of graph data in various fields is increasing day by day.The management of large-scale graph data with complicated structure and high degree of coupling faces two challenges:one is querying speed too slow,the other is space consumption too large.Facing the problems of long query time and large space occupation in graph data management,a two-level index compression algorithm named GComIdx for graph data was proposed.GComIdx algorithm used the ordered Key-Value structure to store the associated nodes and edges as closely as possible,and constructed two-level index and hash node index for efficient attribute query and neighbor query.Furthermore,GComIdx algorithm used a graph data compressed technology to compress the graph data before it directly stored in hard disk,which could effectively reduce the storing space consumption.The experimental results show that GComIdx algorithm can effectively reduce the initialization time of the graph data calculation and the disk space occupancy of the graph data storing,meanwhile,the query time is less than common graph databases and other Key-Value storage solutions.…”
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Optimal Route Assignment at the Bus Hub with Multiple Berths for Minimal Passenger Transfer Distance by Yan-Pei Zhang, Hui Jin, Hai-Ming Hao, Xiao-Guang Yang

“…It is found that the models with additional constraints can greatly reduce calculation time at the cost of small or no gap from the optimal solution. …”
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On the role of soft and non-perturbative gluons in collinear parton densities and parton shower event generators by M. Mendizabal, F. Guzman, H. Jung, S. Taheri Monfared

“…In this approach, the Sudakov form factor can be divided into perturbative and non-perturbative components, with the non-perturbative part being analytically calculable under specific conditions. We first examine forward evolution and demonstrate that including soft and non-perturbative gluons (through the non-perturbative Sudakov form factor) is essential for the proper cancellation of divergent terms in parton density evolution. …”
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Coupling and Coordination of the Regional Economy, Tourism Industry, and Exhibition Industry of China’s Provinces by Mengyuan Lu

“…By constructing a system of evaluation indicators for the regional economy, tourism industry, and exhibition industry, the coupled coordination degree model was used to calculate the degree of synergy of the regional economy, tourism industry, and exhibition industry in China from 2013 to 2019. …”
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Unstructured Grids and the Multigroup Neutron Diffusion Equation by German Theler

“…The neutron diffusion equation is often used to perform core-level neutronic calculations. It consists of a set of second-order partial differential equations over the spatial coordinates that are, both in the academia and in the industry, usually solved by discretizing the neutron leakage term using a structured grid. …”
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A MULTIFACETED APPROACH TO ASSESSING INTERMODAL TRANSPORT by Karol NEHRING, Michał LASOTA, Aleksandra ZABIELSKA, Roland JACHIMOWSKI

“…For each of the variants, indicators related to emissions from fuel consumption, the total time and cost of the process, the share of rail transport in the entire process, and the distance of road transport were calculated. The final analysis of the results shows that the following parameters had the most significant impact on the course of the research: the level of carbon dioxide emissions into the atmosphere and the total cost of the process for a given variant. …”
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MECHANICAL PERFORMANCE OF NEGATIVE POISSON’S RATIO STRUCTURES BASED ON ROTATING CONCAVE HEXAGON (MT) by WANG Zhen, CHEN GuoPing, HUI XuLong, HE Huan

“…Firstly, the theoretical formulas of structural equivalent performance, such as relative density, equivalent elastic modulus, and equivalent Poisson’s ratio, were derived, and verified by simulation calculation. The finite element software LS-Dyna was used to simulate and analyze the dynamic characteristics of rotating concave hexagon and conventional concave hexagon under different impact velocities, and the relationship between energy absorption characteristics of rotating concave hexagon NPR structure and structural parameters such as cell wall thickness, rotation angle and included angle was discussed. …”
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Research on the tourism service quality evaluation of Gongbei Lingnan community under the perspective of SERVQUAL theory by Jing Liu, Xinru Kuai, Pohsun Wang

“…After passing reliability and validity tests, factor analysis was used to determine the weights of the primary indicators, followed by entropy weight calculations to measure the weights of secondary indicators further, and finally presented as an IPA matrix. …”
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The Effectiveness of a Behavioral Program in Reducing the Aggressive Behavior of Children with Mild Mental Disabilities at the Mu'tah Center for Special Education by Sameer Alremawi, Ahmed A. Arabiyat

“…The study used the Wilcoxon Matching Pairs Signed test to calculate the differences between the mean of the pre-test scores and the mean of the post/test scores. …”
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Science Amotivation Scale: Validity and Reliability Study by Busra Karaca, Solmaz Aydin

“…The reliability coefficient of the scale was calculated as .91. The results also indicated that validity and reliability levels of the scale were high and that the scale, in its current form, can be used to identify the reasons behind students’ amotivation in secondary school science classes.…”
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Single and Entangled Atomic Systems in Thermal Bath and the Fulling-Davies-Unruh Effect by Arnab Mukherjee, Sunandan Gangopadhyay, Archan S. Majumdar

“…We consider the interaction between the systems and a massless scalar field, covering the scenarios of free space as well as within a cavity. Through the calculation of atomic transition rates it is found that in free space there is an equivalence between the upward and downward transition rates of an uniformly accelerated atom with respect to an observer with that of a single atom which is static with respect to the observer and immersed in a thermal bath, as long as the temperature of the thermal bath matches the Unruh temperature. …”
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Fractional-Order Active Disturbance Rejection Controller Design for Large Radio Telescope Antenna by Jian-Yu Jiang, Bin Wu, Ting Zhou

“…In addition, a stability region boundary calculation method is presented to simplify the parameter setting procedure. …”
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Research on Non-inertial System Effect of Dynamic Stress of Planetary Gear System under Basic Motion by Aiqiang Zhang, Guangbin Yu, Miaofei Cao, Jing Wei

“…Combining the modified Heywood formula and Hertz formula，a calculation model of the tooth root bending dynamic stress and contact dynamic stress of the planetary gear transmission system under the basic motion non-inertial system is constructed，and the stress non-inertial system coefficients describing the influence of the additional effects on the dynamic stress under the basic motion are defined. …”
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Elastoplastic Analysis for Circular Tunnel Based on Modified Lade Criterion considering Strain Softening and Dilatancy by Yansheng Deng, Jianxiu Wang, Baoping Zou

“…In this paper, a new numerical procedure based on modified Lade criterion is proposed to calculate the elastoplastic solutions for surrounding rock of the circular tunnel. …”
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Observation of Six Pre-Flare VLP Pulsations in Solar Corona by Malihe Jalalirad, Narges Fathalian

“…Periodicities that we calculated for the VLPs of these flares are between 14.6 and 28.2 minutes, which is in agreement with the results of Tan et al. (2016). …”
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Associations of Opium Use with Metabolic Syndrome in Fasa PERSIAN Cohort Study: A Population-Based Study by Rafat Shadmehr, Mehdi Sharafi, Mohammadhossien Shahabzadeh, Mostafa Bijani, Rahim Sharafkhani, Babak Pezeshki, Abdolmajid Ghasemian, Azizallah Dehghan

“…Independent sample t-test and Chi-square test were used for univariate analysis, and multivariate logistic regression was used to control for potential confounders and calculate odds ratios (ORs). Results: The MetS prevalence was 24.6% in the whole population (28.42% in women vs. 19.94% in men, P < 0.001). …”
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Status of Water Quota for Residential Building Construction and Compilation of National Standards by BAI Le, LI Enkuan, FU Xinfeng, JIA Yifei

“…Considering that there is no national standard for water quota in constructing residential buildings,this paper summarizes the existing problems in water quota compilation for residential building construction in 31 provinces of China and teases out related concepts and their connotations in this regard.On this basis,the construction area and water consumption of residential buildings during the construction period are investigated,and scientific and reasonable water use boundary and measurement benchmarks are established.Given the published provincial water quota,a clustering analysis method is used to partition and classify the water consumption quota,and the water quota is calculated by empirical and statistical methods.Combined with the requirements of the current water-saving policy and the actual water use,the water quota value is finally determined.The results show that the standard rate of the provincial water quota is12.5%~40.0%.This quota takes into account the actual water use and water-saving potential of residential building construction at this stage and can measure the water-saving level in the future period.The water quota is reasonable,scientific,and advanced,which can be used in the application and approval of temporary water use for residential building construction,as well as water-saving management such as the management of planned water use.In this way,the standard system of the water quota in China is further improved.…”
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Evaluation of Water Resources Carrying Capacity in Jiangxi Based on System Dynamics Model by SONG Shiqiang, FENG Qian, WANG Pinggen, TANG Guohao, XIONG Xiahui, JI Yong

“…To study the current situation of water resources carrying capacity and alleviate the water supply pressure in Jiangxi Province,this paper constructed an evaluation index system of water resources carrying capacity,taking into account the characteristics of water resources in Jiangxi Province.Further,a system dynamics model of water resources carrying capacity was built with historical data,and four development scenarios were designed,under which the variations of various index parameters were obtained through model simulation.The weight of each index was determined by the analytic hierarchy process,and the change of water resources carrying capacity was calculated under each scenario.The following findings are obtained.① Under the current development scenario,the water resources carrying capacity of Jiangxi Province is in a state of slightly overloading.② Under the rapid development scenario,the overload of the water resources carrying capacity in Jiangxi Province becomes more serious.③ Under the water saving &amp; pollution control and comprehensive development scenarios,the water resources carrying capacity tend to be both improved,and the improvement degree is higher under the latter scenario.The comprehensive development scenario is found to be the optimal development scenario which accords with the sustainable development of Jiangxi Province.This study can provide reference and an evaluation basis for water resources management planning in Jiangxi Province.…”
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Encounter Risk Analysis of Rainfall and Tide in Shenzhen Based on Copula Function by SHI Yunyun, YAO Hangbin, WAN Donghui, ZHENG Xinqian

“…The disasters of encounter of extreme rainstorm and high tide level will aggravate the flood in coastal cities.In order to explore the impact of the encounter of rainstorm and tide on flood control and drainage in coastal cities,based on the annual maximum 1 day rainfall and its corresponding tide level data of Chiwan Station in Shenzhen from 1967 to 2018,the Copula function is used to construct a joint distribution model of annual maximum 1 day rainfall and its corresponding tide level,and the co-occurrence risk,the flood control risk,the condition risk and the combination risk of rain and tide in Shenzhen are calculated and analyzed.The results show that the risk of the encounter of rain and tide in Shenzhen is small,and the co-occurrence and combination risk probability of rainfall whose return period greater than 100 years and tidal level whose return period greater than 200 years are only 0.12% and 0.09%.The probability of the occurrence of rainfall or tide exceeding the standard magnitude is 1.09%,and its return period is less than 100 years.When the rainfall exceeds the standard magnitude,the probability of encountering an over-standard tide level is greater,with a probability of 12.33%.At the same time,with the increase of rainfall,the risk will also increase.Therefore,in the planning and design of flood and tide prevention and drainage in cities,the focus should be on attention and prevention.…”
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Abnormal Event Detection in Wireless Sensor Networks Based on Multiattribute Correlation by Mengdi Wang, Anrong Xue, Huanhuan Xia

“…In this model, the dependency structure of observed attributes is obtained by structure learning, and the conditional probability table of each node is calculated by parameter learning. We propose a new concept named attribute correlation confidence to evaluate the fitting degree between the sensor reading and the abnormal event pattern. …”
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