bluuebunny/crossref_metadata_2025 huggingface dataset:
Application of High-Power Electrical Sounding 3D Imaging Technology in Tunnel Geological Prediction
Authors: Zhou Weixia , Gu Dengcai
Published: December 2022

In actual tunnel engineering, there are few ideal geological conditions, and the tunnel always cuts through areas with high incidence of geological disasters, which increases the difficulty of construction. In this paper, taking the special survey work of comprehensive geophysical exploration of a tunnel in unfavorable geological conditions as an example, we carried out geological prediction by high-power electrical sounding 3D imaging technology. The results indicated that the tunnel in unfavorable geological conditions was mainly a structural fracture zone with bountiful water, where geological disasters, such as collapse, water inrush, mud burst and water gushing, occurred easily during construction, and there were 4 serious unfavorable geological sections and 4 less serious unfavorable geological sections in DK0+180–DK0+760 sections of the tunnel. Thus, effective engineering measures should be taken to ensure the safety of tunnel construction. The geological prediction results were reliable, providing basic data and reference for future tunnel geological prediction.
Stress-Strain Characteristics of Solidified Soil and Its Simulation
Authors: Cheng Min , Chen Haibo , Li Leimeng , Zhang Yaosheng , Wu Zhiqinag
Published: December 2022

Tailings pond is a place for storing tailings or other industrial waste residues discharged from metal or nonmetal mines after ore separation. The tailings material will be discharged into the pond for stockpiling after sorting and processing. The tailings material is hard to consolidate under natural conditions as the result of high water content, resulting in a certain safety risk in the tailings pond. In this paper, a tailing soil in Huangshi City, Hubei Province is studied and triaxial consolidated drained shear tests of tailings materials under different cement contents and curing ages are carried out by using automatic triaxial apparatus. It is made clear that the stress-strain and volume deformation of solidified tailings soil are affected by cement content, curing age and confining pressure under shearing. The stress-strain curves manifest themselves as a strain hardening type at low cement content and they gradually change to a strain softening with the increase of cement content. The solidified tailings soil with high cement content has a peak of deviatoric stress at low confining pressure during shear process and shows the strain softening phenomenon which disappears as the confining pressure increases. In the test range, the solidified tailings soil shows volume shrinkage during shear process, and its stress and strain characteristics may be simulated by the NHRI double yield surface elastoplastic constitutive model.
Experimental Study on Strength and Deformation Characteristics of Cement Soil Under Wet and Dry Cycle
Authors: Li Shuaiheng , Zhu Chen , Huang Zhousheng , Sun Haiyan
Published: December 2022

Jiangsu province, located in the middle and lower reaches of the Yangtze River, suffers from rainfall and temperature and humidity changes, which has a significant impact on the structure of road base and foundation soil in the cyclic wet and dry cycle process, impacting and endangering the strength and deformation characteristics of soil. This paper studies the road base filling in Shanghai-Shaanxi Expressway for strength characteristics and change rules of cement improved foundation soil under the wet and dry cycle, and discusses the influence of cement admixture, age and number of dry and wet cycles on the strength of cement improved road base soil. The results show that the higher the cement admixture and the longer the curing age, the higher the compressive strength of cured foundation soil; the cured foundation soil tends to slow down gradually in strength growth with the increase of age, and slows down obviously after 28 d; the wet and dry cycle process will have an irreversible impact on the structure of cured foundation soil, slowing down or even reversing the strength growth rate of cured foundation soil, which can be reduced by increasing cement admixture.
Experimental Study on the Vertical Bearing Capacity of Molded Polystyrene Wallboard with Steel Skeleton
Authors: Yuan Zhiren , Wu Jiazheng , Wu Yunlong , Ma Haibin
Published: December 2022

The molded polystyrene wallboard with steel skeleton is composed of cold-formed thin-walled steel skeleton, flame-retardant polystyrene particles a special adhesive. The cold-formed thin-walled steel lattice columns with battens were tested under axial compression and eccentric compression. The results show that it is reasonable to calculate the ultimate vertical bearing capacity of the specimen by comparing the experimental results with the theoretical calculation results. It is found that the axial compression bearing capacity of two battens in the middle of the column along the height direction is greater than that of one batten in the middle, and the axial compression bearing capacity is increased by about 13%, and with the increase of eccentric distance around the weak axis, the ultimate bearing capacity decreases, and the specimen is more easier to buckling and in unstable.
Analysis of Deformation and Detection of Left Side Slope of Spillway Tunnel Exit
Authors: Zhang Xu , Fan Rongshan , Cai Xiaoying
Published: December 2022

In view of the extra-large hydropower project, geophysical detection holes are arranged on the left slope of the spillway tunnel outlet to detect the wave velocity and relaxation of rock mass. Combined with mechanical parameters of geological rock mass, based on the analysis of deformation monitoring data of slope rock mass, the mechanical parameters of slope rock mass and structural plane are obtained by using incremental displacement intelligent inversion method, and the unloading relaxation effect of rock mass and rock mass quality are further analyzed. On this basis, the displacement and stress characteristics of slope rock mass after excavation are simulated and calculated by finite element method, and the deformation and quality status of slope rock mass are analyzed, which provides reference for judging the stability status of slope and long-term safe operation of hydropower projects. It has certain practical guiding significance.
Seepage Exploration on a Landslide in a Hydroelectric Power Station
Authors: Gao Quanping , Song Xiaoli
Published: December 2022

Landslide stability analysis is the basement of landslide research. To study the influence of water on reservoir landslide stability, taking a landslide for example in a hydroelectric power station based on detailed field investigation and reservoir operation data, the geological conditions, reservoir and rainfall were considered, the slope failure pattern under natural state and rain state were simulated with Mohr-Coulomb criterion after an numerical three-dimensional model established by the fast Lagrange analysis of continua in 3-dunebsion. A simulation was made for the sliding direction under limit equilibrium situation. The change laws of stability were analyzed under self-gravity, rainfall and reservoir water fluctuation. The distribution characteristics of plastic deformation, displacement and potential sliding surface inside slope were intuitively showed under different conditions. From the point of instability mechanism, water is one of the important factors inducing landslide instability. The key block is suddenly broken with shear rupture that triggers landslide. It offers a reliable basis for both prediction of second landslide induced by rainfall and disaster prevention.
Study on the Application of HEC-RAS in the Regulation of Small and Medium-Sized Rivers in Cities
Authors: Zhou Weixia , Gu Dengcai , Kong Luzhi , Li Chenchen
Published: December 2022

Problems such as waterlogging and poor flood discharge capacity in urban rivers make the reinforcement of urban river embankments gradually put on the schedule of water conservancy work. Therefore, this paper mainly introduces the foreign free software HEC-RAS and its calculation principle. Taking the county section of Mangpian River’s Comprehensive Treatment Project in Lincang, Yunnan Province as an example, we carry out the simulation research and application of the river water surface line, and compare the simulation calculation results with the design calculation values. The two results agree well, which indicates that HEC-RAS has strong operation ability. It is expected that HEC-RAS will be further studied in the future. The research results can better serve the engineering practice.
Applicability Assessment of Multi-Source Satellite Precipitation Products in Lancang River Basin
Authors: Nan Linjiang , Yang Mingxiang , Li Honggang , Guan Zhen , Wang Hejia , Xiao Weihua , Dong Ningpeng
Published: December 2022

In order to evaluate the applicability of Fengyun 2G and GPM IMERG satellite precipitation products in the Lancang River Basin, four evaluation indicators are selected in this paper. The results show that: (1) In terms of correlation coefficient (CC), the GPM IMERG products are better than Fengyun 2G. Among them, GPM IMERG Late Run is better than Early Run, and Final Run is better than Late Run; (2) In terms of root mean square error (RMSE) and mean absolute error (MAE), the values of GPM products are higher; (3) The GPM IMERG products show that the CC of the lower reaches is better than that of the upper reaches; (4) The RMSE and MAE are better in the upper reaches than in the lower reaches, and the high value of the error is mainly concentrated in the lower reaches. This study provides a more reliable precipitation data guarantee for the cascade management of Lancang River Basin, and has certain scientific significance and practical value.
Study on Wake of a Yawed Square Cylinder Using Particle Image Velocimetry
Authors: Lou Xiaofan , Xu Xiaochun , Ren Lei
Published: December 2022

The wake of a yawed square cylinder undergoing steady flow was examined by employing particle image velocimetry (PIV) technique. The present study is concerned with the independence principle (IP) for a square cylinder by examining the effect of the yaw angle (α) on the velocity signals and the vortical structures. The normalized Strouhal number indicates that the IP is no longer applicable when α reaches 45°. At α = 45°, the distorted vorticity contour and the reduction of the vorticity strength, imply the significant effect of the yaw angle. The generation of the axial flow from the base of the yawed cylinder makes the communication between the shear layers more difficult and hence weakens the vortex shedding process, which manifests a strong three-dimensionality of the wake, resulting in the invalidity of the IP for α = 45°.
Experimental Study on Water Flow Characteristics in Open Channels with Floating Rigid Vegetation Groups
Authors: Zhou Yiling , Jing Hefang , Wang Weihong , Chen Qiutong
Published: December 2022

To explore the water flow characteristics under the action of floating rigid vegetation groups, several laboratory tests are conducted in a flume of North Minzu University, in which floating rigid vegetation is replaced by glass rods. In the tests, two groups of vegetation are placed at different positions of the flume and the vegetation length into the water is changed. Experimental results show that both the upstream water level of the vegetation group and water surface slope along the way grow with the increasement of the length of the vegetation root. When vegetation root becomes longer, the flow velocity under the vegetation layer increases, while the flow velocity within the upper vegetation layer decreases. In addition, it can be also be found from the measured results that the turbulent kinetic energy of the flow increases as the length of the floating vegetation decreases in the water.
Nara Hydropower Station’s Installed Capacity and Model Selection for Efficiency Enhancement and Capacity Expansion
Authors: Yang Hongfeng , Ji Rui , Hu Huali , He Weitong , Chen Bingsen , Liu Qibo
Published: December 2022

Since the Nara Hydropower Station was put into operation, it has far exceeded the designed service life of 25 years. The generator insulation is seriously aging, the water leakage of the turbine is large, the working efficiency of the unit is low, the operation failure occurs frequently, and the hidden safety problems are prominent. At present, the upstream cascade power station and the leading reservoir have been constructed and put into operation, and the hydraulic resources of the basin have been adjusted annually. By collecting hydrological data, re-calculating and determining the average annual water flow that can be used for power generation of the power station, and determining the overall plan for maintaining the existing power station dam and reforming other hydraulic structures, and then comparing and demonstrating the technical and economic plans, it is clear that the power station The total installed capacity and the number of units were optimized, new and high-efficiency hydro-generator units were selected, and the operation plan was formulated scientifically and rationally. After the renovation, the average annual power generation of the power station was 492% of that before the renovation.
Forecast, Monitoring and Local Warning Constitute a Complementary Early Warning System in Flash Flood Risk Management: A Case Study in Lianxi River of Zhejiang Province
Authors: Zhou Zhengjie , Zhang Lihong , Li Hanze
Published: December 2022

In the southeast coast of China, flash flood risk management is usually based on natural villages. In recent years, extreme rainfall increased, with the impact of man-made activities, flash floods occur frequently. This paper introduces an Early Warning System, which is composed of forecast warning, monitoring warning and local warning complementing each other. In order to explore the key role of early warning system in flash flood risk management, we study a flash flood disaster prevention case in Lianxi River Basin of Zhejiang Province during Severe Typhoon In-Fa in 2021. In addition, we analyze and discuss the main problems encountered in the case and put forward some suggestions to provide references for the prevention and control of flash flood disaster.
Study on Sand Production Evolution Mechanism of High Muddy Silt and Fine Sand Hydrate Reservoir Exploitation in Sea Area
Authors: Li Xiaojie , Feng Jianyue , He Jibin , Ye Chengming , Yu Li
Published: December 2022

According to the grading curve and Water content allocation of the hydrate reservoir, the particle size distribution and water condition of the formation sand are simulated, and the gas drive pressure difference condition is set. Under the condition of gravel packing and sand control, the one-dimensional unidirectional flow of high argillaceous and fine sand under gas drive is analyzed, and the parameters such as displacement pressure difference, flow rate, sand proportion and permeability are measured. The three phase percolation law of gas, water and solid particles from the initial stage to the end of the test was systematically analyzed. The results show that the evolution process of sand production is divided into four stages: initial particle-free migration, slow particle migration, rapid particle migration and particle structure stability. The time of specific process is controlled by pressure difference and gas-water flow conditions. Because of the high mud content, the slow migration phase of the particles will migrate and consolidate on the outer wall of the sand retention structure to form a mud layer (permeability is 0.1–5 Milli Darcy). The mud layer has a certain stable structure and strength, which has a significant influence on the water flow conditions and has no obvious influence on the gas percolation. The test results reveal three mechanisms for the exploitation of natural gas hydrate reservoirs, namely the sanding evolution process, the gravel filling sand blocking and the mud layer sand resistance with certain permeability and strength.
Reconstruction of Long-Series Runoff Data Based on Hydrological Simulation and Quantile Mapping
Authors: Gao Xuan , Tang Chenglong , Wu Haiyan , Li Lingjie , Kang Yan
Published: December 2022

A long series of runoff data is the basis for water conservancy project planning, water resource management, and so on. When the runoff data is in short supply, it needs to be extended and reconstructed. Taking Zhiyan Reservoir and Qiantanglong Reservoir in Lanxi City as the research objects, based on the Water balance model with double parameters (WBM-DP) and Quantile Mapping (QM) methods, the monthly income of the two reservoirs for 59 years from 1960 to 2018 was analyzed. The library runoff sequence was refactored. The constructed WBM-DP has good calibration results, extending the monthly inflow runoff sequence of Zhiyan Reservoir and Qiantanglong Reservoir. After the QM method is used to correct the deviation, the error between the simulated series and the measured value is significantly reduced. The method used in this paper can provide reference for the reconstruction of long series of runoff data.
Study on the Temporal and Spatial Evolution of Extreme Rainfall in Guangzhou
Authors: Zhang Kang , Zhang Yanyan
Published: December 2022

Based on the rainfall data of 17 rainfall stations in Guangzhou every 15 minutes from 2004 to 2019, using a combination of statistical analysis and theoretical analysis, this paper analyzes the temporal and spatial distribution of rainfall in Guangzhou during the interannual and flood seasons, and the intensity and frequency of rainfall. The pattern of change and the characteristics of the “5.22” rainstorm showed that the annual rainfall and rainfall in the flood season in Guangzhou showed an increasing trend in the central urban area, and a downward trend in the northern mountainous and southern coastal areas; the intensity and frequency of rainfall in the central urban area were widespread. In the northern mountainous area and the southern coastal area, the opposite is true; the number of heavy rainstorms with a peak value of more than 20 mm in the central city is increasing, but the duration of the rainstorm is shortening, and the opposite is true in other areas; the peak of “5.22” rainstorm is only 39.5 mm, which is much lower than other central urban areas. The largest rainstorm peak in the history of the station, and the long rainstorm duration is the main cause of waterlogging. It is suggested to adopt the idea of adding underground water storage facilities in same place to temporarily alleviate the urban waterlogging problem.
Optimization of Energy Conservation for Rural Residential Buildings in the Guangzhong Plain
Authors: Song Bing , Bai Lujian , Wu Lei , Yang Liu
Published: December 2022

Most of the rural residential buildings in China are built by occupants themselves lacking of building energy-efficiency design, leading to the problems of poor indoor thermal environment and energy waste. To maximize energy efficiency and minimize life-cycle costs in the premise of thermal comfort, a study was conducted to find the optimal combination of energy conservation factors for rural residential buildings on Guanzhong Plain. The orthogonal test is designed to figure out the optimal solution among an array of building energy-efficiency design factors. Nine design factors were selected to establish 32 combinations in the orthogonal test. Taking the energy consumption per unit area as the evaluation value, the factors in descending order of influencing building energy consumption were concluded and the optimal combination for residential building design was obtained. These results provide an explicit approach to design energy-efficiency dwelling in Guanzhong rural area.
Research and Design of Detachable Foundation of Transmission Line Crossing Equipment
Authors: Mao Hua , Li Wenjie , Shi Qiang , Ma Yong , Wu Nianpeng
Published: December 2022

Aiming at the problems of high cost, large floor area and non-disassembly of traditional transmission line crossing equipment, it is particularly necessary to study and apply the detachable foundation with low cost, high reuse rate and good environmental protection performance in transmission line crossing equipment. Therefore, the maximum load combination form of detachable foundation is obtained by studying the load form of foundation of transmission line crossing equipment. At the same time, combined with the characteristics of overturning trend of transmission line crossing equipment, we design the arrangement form of detachable foundation cap and foundation screw anchor that meet the bearing capacity requirements. The design of flange seat connection form in detachable foundation can not only realize the detachable purpose of screw anchor and foundation cap, but also adjust the problem of installation difficulty caused by the inclination of screw anchor after construction drilling. After the simulation check, the maximum stress of the foundation bearing platform is 206.2 MPa, and the maximum stress of the bolt strength used for reaming holes is 335 MPa, all of which meet the material allowable requirements under the safety factor. The research of detachable foundation can realize the reuse of crossing equipment of transmission lines, and has good economic benefits.
Study on Soil Salinization Characteristics of Farmlands Along West Trunk Canal in Ningxia Based on Redundancy Analysis
Authors: Dou Bingyan , Jing Hefang , Wang Weihong , Dong Jiaqi
Published: December 2022

Based on the statistical analysis and redundancy analysis on the soil sampling points along West Trunk Canal in Ningxia of China, the spatial distribution characteristics and relations among total salt content, pH value and salt ions’ composition at different depths are obtained. The correlation coefficients, eigenvalues and interpretation variances of salt ions in each soil layer are analyzed and discussed. According to the analysis, it can be concluded that the farmlands along West Trunk Canal is severely salinized, especially for the soil near the shallow surface. The redundancy analysis results show that in the 0–80 cm soil layer, the angles between CO32- and pH value and HCO3- and pH value, are smaller than other environmental factors, indicating that soil pH value is significantly affected by the content of CO32- and HCO3-, and they are positively correlated. K+ and Cl- have the smaller and acute angle with total salt, indicating that total salt of the soil is significantly affected by the content of K+ and Cl- and they are also positively correlated. Different from others, in the 80–100 cm soil layer, pH value is significantly affected by the content of Na+ and the total salt of the soil is significantly affected by the content of Mg2+, Cl-, CO32- and HCO3-.
Geochemical Distribution of Soil Metals: A Case Study in Binzhou
Authors: Zhang Yunfeng , Jia Qiang , Shi Houli , Wang Jitao , Shen Jianjun , Cao Qing
Published: December 2022

In order to determine the geochemical distribution of metals in the survey area, we investigated and analyzed soil samples according to the regulations of land quality and soil contamination. We analyzed the geochemical properties of the soil, like topsoil and deep soil, at the Binzhou Economic and Technological Development Zone. The background values and distributions of various soil indicator elements were identified within the survey area. The geochemical distribution of various elements was also determined in the soil, and the land quality and contaminants in the soil were assessed. We found that the topsoil in the survey area was free of the risk of contaminants.
A Design Method of Effective Length Coefficient for Irregular Non-Sway Steel Frame Columns with Staggered Beams
Authors: Rong Rong , Liang Haisheng , Fan Shun , Wang Bowei , Zhou Feng
Published: December 2022

The indoor substation is a key hub in the urban power system. Due to the need to arrange large main transformers and high- and low-voltage electrical types of equipment in a small space, the structure is characterized by frame beams discontinuity, which in turn causes the specificity of the boundary condition at the ends of the steel frame columns, forming a special class of irregular steel frame column whose buckling performance and effective length coefficient design method need to be studied urgently. In this paper, the effects of the staggered frame beams on the buckling loads and effective length coefficients of irregular steel columns in non-sway frames are investigated numerically. Based on the numerical results obtained from this study, the design formulae to calculate the effective length coefficients for irregular non-sway steel frame columns with staggered beams in frames are proposed. The effective length coefficients of irregular steel frame columns predicted by using the proposed design formulae can accurately reflect the influence of the misalignment height of frame beams.
Research on Water Environment Protection Technology During the Construction Period of Bridges in Shenzhen-Zhongshan Link
Authors: Chen Huanyong , Chen Yao , Tian Xinyi , Huang Houqing , Xiao Wenfu , Liu Xuexin
Published: December 2022

During the construction period of sea-crossing bridge, pile foundation construction and other operations are easy to cause marine water environment pollution. In order to enhance the green development level of the cross-river (sea) channel project, this paper selects the Shenzhen-Zhongshan Link, a typical cross-sea traffic cluster project, as the research object. And introduces water environmental protection technologies such as bored pile with steel casing, cofferdam formed by locking steel pipe pile, cofferdam formed by geotech-bag, and whole trestle across the sea. The variation characteristics of suspended solids, oil, inorganic nitrogen, inorganic phosphorus and heavy metal concentrations with respect to time and space in the whole sea area of the bridge project were systematically analyzed, to explore the influence of bridge construction on water quality of the whole sea area. Further verify the application effect of the water environmental protection technologies, and provide reference for similar bridge green construction and water environment protection research in the future.
Statistical Analysis of Structural Diseases of Different Types of Cable Channels
Authors: Shi Zengli , He Lei , Liu Junbo , Ma Shanqing
Published: December 2022

Structural diseases are the main threats to the safety and daily operation and maintenance of cable channels. Through the statistical analysis of 255 cable channel structural diseases nationwide, the distribution characteristics of cable channel structural diseases were studied, and seven types of cable channel structures including cracks, seepage, displacement/deformation, material degradation, siltation, cavity and structural damage were revealed. The results show that water leakage, siltation and cracks are the most important forms of structural diseases of cable channels at present; structural diseases have significant correlation with cable channel types, construction methods and structural types. The research results can provide data support for the design and operation and maintenance management of cable channels.
Common Problems Analysis and Optimization Design of SCR Denitrification Urea Hydrolysis Ammonia Production Process in Coal-Fired Power Plants
Authors: Deng Yue
Published: December 2022

This paper expounded the urea ammonia production process of SCR denitration, and maked a detailed technical and economic comparison and analysis of various process routes such as urea hydrolysis, pyrolysis (electric heating) and gas heat exchange. The research showed that urea hydrolysis and pyrolysis were widely used and had their own advantages and disadvantages. Taking 300 MW unit as an example, the practical application research was carried out: considering the difficulty of construction, maintenance, operation stability, adjustment and economy during operation, the urea hydrolysis ammonia production scheme was recommended preferentially. Finally, three optimization design principles were put forward for the urea hydrolysis ammonia production process, including fully considering the standby, minimizing the impact on the original unit, and safe and stable operation.
Application of GPR Instantaneous Attribute Analysis Technology in Detection of the Karst Water Conduction Channel
Authors: Zhang Zengyu , Li Yunbo , Yang Hongfei , Shan Liyan , Qiao Wusheng , Sun Zhe , Qiao Zilong , Xu Cheng
Published: December 2022

In order to accurately identify the distribution of the karst water conduction channel after water inrush, the ground penetrating radar (GPR) is used for fine detection of development of karst water conduction in front of the heading surface after water inrush, and the instantaneous amplitude, instantaneous phase and instantaneous frequency are extracted from the radar signal by Hilbert transform. Then, the three instantaneous properties are combined for multi-parameter comprehensive analysis of the karst water conduction channel. As shown in the study results, the instantaneous amplitude can better show the boundary characteristics and morphological size of the karst water conduction channel. The instantaneous phase can clearly show the heterogeneous characteristics inside the karst water conduction channel. The instantaneous frequency can reflect the water richness of the karst water conduction channel from the angle of energy decay. The combination of the three instantaneous attributes can avoid the explanatory bias due to the analysis of single waveform characteristics, and effectively improve the resolution and accuracy of the detection of the karst water conduction channel.
Design of Ubiquitous Awareness Scheme for Port Production Operation
Authors: Zhang Zhao , Zhang Ziqing , Bao Xiangyu , Liu Shidong , Yu Jiaheng
Published: December 2022

This paper has sorted out application and trend of Ambient Ubiquity Network, put forward the Ambient Ubiquity Network requirements and construction principles for port digital twin applications combined with the experience gained in the process of port construction, provided overall framework of Ambient Ubiquity Network of port with universality, developed Ambient Ubiquity Network and Exchange Software, and conducted actual data access verification of port targeting at the five-layer model of overall framework based on the micro-service technology framework around operation process of dry bulk cargo handling terminal, container terminal, and liquid bulk cargo terminal.
Analysis of Real-Time Road Conditions and Congestion Control Effectiveness in Guangzhou Under the Environment of Internet of Vehicles
Authors: Gao Ai
Published: December 2022

In order to help Guangzhou solve the problem of highway traffic congestion, this paper investigates the real-time road conditions of highway traffic in Guangzhou in October 2017, September 2019 and May 2021 with the help of “Internet of vehicles” technology, and uses GIS technology combined with survey data to map the changes of highway traffic congestion in Guangzhou. At the same time, it also summarizes the new traffic congestion sections, the sections with the fastest increase in traffic congestion and the sections with improved traffic congestion in Guangzhou from 2017 to 2021. By further analyzing the reasons for the improvement of traffic congestion, this paper obtains the countermeasures that really take effect in the work of traffic congestion control in Guangzhou, and further puts forward some suggestions for traffic congestion control in Guangzhou.
Light scattering properties of cellulose microcrystals from multiple angles under a magnetic field
Authors: Takeuchi Yuka , Hamasaki Atom , Kawaguchi Hideki , Matsuda Mizushi
Published: December 2022

Cellulose is a promising sustainable material due to its flexibility and high strength. The light scattering characteristics of anisotropic cellulose crystals from various angles with magnetic orientation were experimentally clarified in this study. The intensity of the light scattered from cellulose crystals is reduced by the application of a magnetic field. Therefore, it was suggested that switching the magnetic field would allow the light intensity to be controlled similarly to an attenuator.
Soil microbial fuel cells with low-cost anode made of rice husk charcoal and Japanese drawing ink “Bokuju”
Authors: Hirose Soichiro , Nguyen Dang Trang , Taguchi Kozo
Published: December 2022

The performance of soil microbial fuel cells (SMFCs) is greatly affected by the material of the anode. In this study, a low-cost material was fabricated based on rice husk charcoal (RHC) and cheaply available Bokuju (Japanese black drawing ink). Using the fabricated material to make the anode, the SMFC obtained a maximum power density of 9.52 μW/cm2. RHC showed a significant impact on the performance of the anode electrodes. Also, the ratio of RHC to Bokuju affected the output of the SMFC.
Simultaneous electromagnetic evaluation method for surface thickness of nickel layer and lift-off on nickel coating steel by alternating magnetic field
Authors: Mochizuki Yuki , Gotoh Yuji
Published: December 2022

Nickel plating is used on the surface of rolling rolls in paper mills, and it is important to monitor the thickness of the nickel plating. In this research, the electromagnetic inspection method for the thickness of the nickel plating using the difference in electromagnetic properties between the nickel and the base material of S25C steel is proposed. On the other hand, the detection signal is also affected by the changing distance (lift-off: L o) between the proposed electromagnetic sensor and the nickel plating. In this paper, by measuring the magnetic field in two directions of the electromagnetic sensor, it is shown that both the thickness of the nickel plating and the lift-off ( L o) are evaluated.
Effects of robotic upper limb treatment after stroke on cognitive patterns: A systematic review
Authors: Bressi Federica ,   Working Group Upper Limb “CICERONE” Italian Consensus Conference On Robotic In Neurorehabilitation, Cricenti Laura , Campagnola Benedetta , Bravi Marco , Miccinilli Sandra , Santacaterina Fabio , Sterzi Silvia , Straudi Sofia , Agostini Michela , Paci Matteo , Casanova Emanuela , Marino Dario , La Rosa Giuseppe , Giansanti Daniele , Perrero Luca , Battistini Alberto , Filoni Serena , Sicari Monica , Petrozzino Salvatore , Solaro Claudio Marcello , Gargano Stefano , Benanti Paolo , Boldrini Paolo , Bonaiuti Donatella , Castelli Enrico , Draicchio Francesco , Falabella Vincenzo , Galeri Silvia , Gimigliano Francesca , Grigioni Mauro , Mazzoleni Stefano , Mazzon Stefano , Molteni Franco , Petrarca Maurizio , Picelli Alessandro , Posteraro Federico , Senatore Michele , Turchetti Giuseppe , Morone Giovanni , Gallotti Marco , Germanotta Marco , Aprile Irene
Published: December 2022

BACKGROUND: Robotic therapy (RT) has been internationally recognized for the motor rehabilitation of the upper limb. Although it seems that RT can stimulate and promote neuroplasticity, the effectiveness of robotics in restoring cognitive deficits has been considered only in a few recent studies. OBJECTIVE: To verify whether, in the current state of the literature, cognitive measures are used as inclusion or exclusion criteria and/or outcomes measures in robotic upper limb rehabilitation in stroke patients. METHODS: The systematic review was conducted according to PRISMA guidelines. Studies eligible were identified through PubMed/MEDLINE and Web of Science from inception to March 2021. RESULTS: Eighty-one studies were considered in this systematic review. Seventy-three studies have at least a cognitive inclusion or exclusion criteria, while only seven studies assessed cognitive outcomes. CONCLUSION: Despite the high presence of cognitive instruments used for inclusion/exclusion criteria their heterogeneity did not allow the identification of a guideline for the evaluation of patients in different stroke stages. Therefore, although the heterogeneity and the low percentage of studies that included cognitive outcomes, seemed that the latter were positively influenced by RT in post-stroke rehabilitation. Future larger RCTs are needed to outline which cognitive scales are most suitable and their cut-off, as well as what cognitive outcome measures to use in the various stages of post-stroke rehabilitation.
Créditos derivados da legislação do trabalho ou decorrentes de acidentes de trabalho na recuperação judicial após as reformas da Lei 14.112/2020
Authors: Villarinho Gabriel Araujo , Arruda Pablo Gonçalves e , Mendonça Saulo Bichara
Published: December 2022

O presente estudo objetiva perquirir o meio mais adequado para satisfação do direito do titular dos créditos derivados da legislação do trabalho ou decorrentes de acidentes de trabalho na recuperação judicial, considerando as alterações produzidas pela Lei nº 14.112/2020 na lei de recuperação de empresas e falência. O problema é posto a partir da hermenêutica do art. 54, §2º da Lei nº 11.101/2005 e será investigado à luz dos precedentes jurisprudenciais e da doutrina especializada. O estudo se propõe a investigar a hipótese de que a melhor interpretação do referido dispositivo legal seria aquela que considera que os prazos legais devam ser contados de forma cumulativa e não alternativa, reconhecendo que para o credor seria preferível receber seus direitos de forma tempestiva, mas, ante a impossibilidade de assim os perceberem, mais vantajoso seria recebê-los em prazo dilatado do que se habilitar no processo falimentar.
Cumplimiento de las Guías Alimentarias en adolescentes chilenos: un estudio transversal de la Encuesta Nacional de Salud 2016-2017
Authors: Troncoso-Pantoja Claudia , Lanuza Fabián , Martínez-Sanguinetti María Adela , Leiva-Ordoñez Ana María , Ramírez-Alarcón Karina , Martorell Miquel , Labraña Ana María , Parra-Soto Solange , Lasserre-Laso Nicole , Nazar Gabriela , Celis-Morales Carlos , Petermann-Rocha Fanny
Published: December 2022

El cumplimento de las Guías Alimentarias Basadas en Alimentos (GABA) vigentes en Chile, asegura una alimentación suficiente y equilibrada. Objetivo: Determinar el cumplimiento de 5 recomendaciones de las GABA y su asociación con variables antropométricas, de estilo de vida y metabólicas, en adolescentes que participaron en la Encuesta Nacional de Salud 2016-2017. Sujetos y Método: Estudio transversal que incluyó 355 adolescentes entre 15 a 19 años. Los participantes se dividieron en 4 grupos (cumple ninguna, 1, 2 o ≥ 3 recomendaciones) utilizando 5 mensajes de las GABA (consumo de leguminosas, pescado, lácteos, frutas y verduras y agua). Las asociaciones entre GABA y las variables de salida: peso corporal, índice de masa corporal, perímetro de cintura, actividad física, horas de sueño, variables metabólicas, fueron investigados utilizando análisis de regresión lineal ajustado por variables sociodemográficas. Resultados: El 5,6% de adolescentes cumplían con tres o más recomendaciones GABA. De las recomendaciones medidas, presentaron un mayor cumplimiento el consumo de agua (85%) y legumbres (78,7%), reconociendo diferencias entre mujeres y hombres para el consumo de legumbres (58,6% vs. 86,4%), agua (69,6% vs. 91%) y lácteos (92,9% vs. 39,1%). Los adolescentes con mayor cumplimiento de las GABA, presentaban una menor glicemia (p = 0,025). No se identificaron otras asociaciones significativas en estilos de vida y mediciones antropométricas. Conclusiones: Los adolescentes participantes en este estudio presentaron dificultades en la adhesión a recomendaciones de las GABA.
Triterapia con moduladores de la proteína de conductancia de transmembrana en fibrosis quística
Authors: Fielbaum Colodro Óscar , Vidal Grell Alberto , Mendez Yarur Alejandra , Sobarzo Clerc Camila
Published: December 2022

Estudios recientes han mostrado que la terapia con moduladores de la Proteína de Conductancia de Transmembrana (CFTR) en pacientes con Fibrosis Quística (FQ) con Elexacaftor-Tezacaftor-Ivacaftor (ETI), disminuye las exacerbaciones, mejora la función pulmonar y la calidad de vida.Objetivo: reportar la respuesta clínica en la primera paciente de nuestro medio tratada con ETI.Caso Clínico: Paciente de sexo femenino de 14 años portadora de Fibrosis quística de fenotipo severo, heterocigota para la mutación Phe508del, (Phe508del/1078delT), con compromiso pulmonar moderado e insuficiencia pancreática (IP). La paciente inició terapia ETI luego de que enfermedad entró en fase de deterioro clínico y de la función pulmonar. Desde la segunda visita (45 días) y hasta el final del seguimiento (365 días) la paciente experimentó una importante mejoría en los dominios de calidad de vida medida por el cuestionario CFQ-R 14+. En el estudio de función pulmonar, a los 45 y 365 días, la CVF subió 21% y 22%, el VEF1 20% y 27%, y el FEF 25-75 en 23% y 37%, respectivamente. Los parámetros de evaluación nutricional en el primer semestre de seguimiento mostraron un aumento de pIMC de 1,6 a 5,6 k. No se observaron efectos adversos.Conclusión: el tratamiento con ETI en la paciente portadora de FQ reportada en este caso clínico, mostró una notable mejoría en calidad de vida, función pulmonar y estado nutricional.
Manajemen Akun Pengguna Berbasis Roaming Profile untuk Memperkuat Perlindungan Data di Laboratorium Komputer
Authors: Firmansyah Aditya Wahyu , Marcus Ronald David , Ilmananda Asri Samsiar , Pamuji Fandi Yulian
Published: December 2022

Roaming profile adalah fitur pengelolaan profil pengguna secara terpusat melalui active directory pada Windows Server, yang berguna untuk mengalihkan seluruh pengaturan aplikasi dan penyimpanan data ke server, sehingga pengguna dapat mengakses profil mereka di komputer mana pun di jaringan. Dibandingkan dengan local profile yang mengandalkan hard drive lokal, roaming profile lebih cocok diterapkan untuk manajemen akun pengguna di laboratorim komputer, karena mahasiswa menggunakan PC secara bergantian dan berpindah-pindah dari satu PC ke PC yang lain. Penelitian ini bertujuan untuk menggantikan pengaturan local profile yang sebelumnya masih digunakan di laboratorium komputer Fakultas Teknologi Informasi Universitas Merdeka Malang, menjadi pengaturan berbasis roaming profile. Melalui penelitian ini, diharapkan dapat menghadirkan solusi untuk memberikan kemudahan bagi mahasiswa dalam mengakses profil mereka sendiri, sekaligus memberikan perlindungan terhadap file yang mereka simpan. Metode penelitian ini didasarkan pada pendekatan kualitatif dan eksperimental. Hasil penelitian menunjukkan bahwa implementasi active directory dengan roaming profile mampu meningkatkan kualitas pelayanan di laboratorium komputer, serta meningkatkan keamanan dan kenyamanan bagi mahasiswa.
Teknologi GPS NEO-6 Untuk Tracking Kapal Penumpang Secara Real Time dengan Fitur Tombol Emergency SOS
Authors: Salamah Irma , Nasron Nasron , Azzahra Dita
Published: December 2022

Pemantauan posisi alat transportasi merupakan hal penting dalam dunia transportasi, salah satunya pada kapal laut. Hal ini dibutuhkan untuk mengetahui posisi kapal secara akurat ketika terjadinya kemungkinan resiko kecelakaan. Teknologi Global Potisioning System (GPS) merupakan sistem satelit navigasi dan sistem penentuan posisi geografis dengan menggunakan satelit melalui 24 satelit yang mengirimkan sinyal gelombang mikro ke Bumi. Pada penelitian ini menggunakan modul GPS NEO-6M yang berfungsi sebagai penerima GPS (Global Positioning System Receiver) untuk mendeteksi lokasi dengan menangkap dan memproses sinyal dari satelit navigasi. Lokasi yang menjadi target pengujian yaitu di Sungai Musi tepatnya di Lokasi 1 daerah Musi 6 dan Lokasi 2 di daerah Benteng Kuto Besak (BKB). Berdasarkan lokasi 1 di daerah Musi 6 didapatkan Latitude sebesar -3.005045 dan Longitude sebesar 104.751624. Selanjutnya untuk pengujian kapal di lokasi 2 daerah BKB, didapatkan hasil Latitude sebesar -2.992315 dan Longitude sebesar 104.760456. Hasil yang diperoleh dari perancangan ini mampu menampilkan data informasi dari kapal berupa Maps pada aplikasi Blynk dan notifikasi akan muncul ketika tombol SOS ditekan. Sehingga dapat membantu proses evakuasi ketika terjadi kecelakaan atau hal darurat yang terjadi di kapal secara tepat dan tepat. Serta dapat meningkatkan keamanan dan rasa nyaman bagi keselamatan penumpang kapal selama menggunakan transportasi air.
Evaluasi Sistem Informasi Manajemen Hotel Dengan Metode Unified Theory Of Acceptance And Use Of Technology (UTAUT) 2 Di Bina Darma Hotel Palembang
Authors: Estrada Yosef , Sobri Muhammad
Published: December 2022

Pada Bina Darma Hotel Palembang sudah menggunakan sistem informasi manajemen untuk membantu dalam mengelola dan melayani pelanggan yang akan menginap, dengan adanya sistem informasi pihak bina darma terutama staff atau karyawan yang bekerja dapat bekerja dengan efisien. Akan tetapi dalam penerapan sistem informasi ini belum dilakukan evaluasi selama penggunaan sistem, hal ini membuat belum diketahui apakah sistem informasi manajemen ini sudah sepenuhnya diterima oleh para pengguna sistem. Dalam implementasi dengan menggunakan UTAUT 2 untuk memahami dan mengetahui pemakaian dari kinerja sistem. UTAUT 2 adalah sebuah model untuk mengetahui perkembangan suatu perkembangan penggunaan sistem informasi. Maka perlu dilakukan sebuah evaluasi sistem informasi untuk mengukur sejauh mana sistem informasi ini dapat diterima oleh pengguna khususnya karyawan dan staff yang berada di ruang lingkup Bina Darma Hotel. Guna mendukung dalam melakukan evaluasi dalam penggunaan sistem informasi manajemen Bina Darma Hotel, perlu didukung sebuah metode, metode yang dapat melakukan evaluasi terhadap penerimaan sistem. Metode tersebut merupakan UTAUT 2. Maka berdasarkan permasalahan tersebut perlu dilakukan sebuah evaluasi terhadap sistem informasi manajemen yang ada pada Bina Darma Hotel.
Perbandingan Algoritma Levenshtein dan Jaro Winkler Pada Sistem Informasi Pencarian Dokumen Perundang-Undangan (Studi Kasus : Diskominfo Lahat)
Authors: Syahputra Iqbal , Syakti Firamon
Published: December 2022

Penelitian ini dapat mengukur perbandingan dari perhitungan Levenshtein Distance dan perhitungan Jaro Winkler dalam mengenali kemiripan kalimat. Informasi pengujian yang digunakan dalam tinjauan ini terdiri dari dua informasi pengujian, yaitu informasi pengujian untuk mengukur kedekatan perhitungan dan informasi pengujian untuk mengukur waktu penanganan perhitungan. Pengujian perhitungan diselesaikan dengan menggunakan aplikasi identifikasi pemalsuan untuk menghitung tingkat komparabilitas dan waktu penanganan yang dibuat oleh kedua perhitungan tersebut. Setelah dilakukan pengujian, data dari hasil kedua pengujian dihitung rata-ratanya untuk dihitung hasil perbandingannya. Hasil dari perbandingan kemiripan yang didapat dari perhitungan Jaro Winkler adalah 76%, sedangkan untuk perhitungan Levensthein Distance adalah 57%. Kemudian hasil rata-rata perhitungan Jaro Winkler adalah 0,0052 detik, sedangkan untuk perhitungan Levensthein Distance adalah 0,00028 detik. Berdasarkan hasil perbandingan yang dilakukan, perhitungan Jaro Winkler terbukti memiliki tingkat kemiripan kata yang lebih tinggi dan waktu penanganan yang lebih cepat daripada perhitungan menggunakan Levenshtein Distance dalam mengidentifikasi kemiripan kalimat.