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Journal articles on the topic 'Forward station'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Capizzi, Giacomo, Grazia Lo Sciuto, P. Monforte, and Christian Napoli. "Cascade Feed Forward Neural Network-based Model for Air Pollutants Evaluation of Single Monitoring Stations in Urban Areas." International Journal of Electronics and Telecommunications 61, no. 4 (December 1, 2015): 327–32. http://dx.doi.org/10.1515/eletel-2015-0042.

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Abstract In this paper, air pollutants concentrations for NO2, NO, NOx and PM10 in a single monitoring station are predicted using the data coming from other different monitoring stations located nearby. A cascade feed forward neural network based modeling is proposed. The main aim is to provide a methodology leading to the introduction of virtual monitoring station points consistent with the actual stations located in the city of Catania in Italy

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2

Liu, Yi Gang, Si Zhe Liao, Jun Hui Liang, Tong Zeng, and Zhu Liu. "Reliability and Sensitivity Evaluation of the Station Bus Systems Configuration." Applied Mechanics and Materials 391 (September 2013): 336–39. http://dx.doi.org/10.4028/www.scientific.net/amm.391.336.

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The stations work has a close relationship with the reliability of station bus systems configuration, this paper established the index system of station bus systems configuration, discussed the components evaluation model, put forward the calculation based on correlation matrix, and analysis the sensitivity of the components, thus proposed the guiding suggestion to improve the reliability of station bus systems configuration. The example demonstrated the validity and practicability of the method.

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3

Kaspi, Haya, and Offer Kella. "Stability of feed-forward fluid networks with Lévy input." Journal of Applied Probability 33, no. 2 (September 1996): 513–22. http://dx.doi.org/10.2307/3215075.

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We consider a stochastic fluid network with independent subordinator inputs to the various stations and deterministic internal flow which is of feed-forward type. We show that under suitable conditions the process of fluid contents in the station has a limiting distribution, where the limit holds in total variation and is independent of the initial condition. We also show that this limiting distribution is of product form only for trivial setups.

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4

Kaspi, Haya, and Offer Kella. "Stability of feed-forward fluid networks with Lévy input." Journal of Applied Probability 33, no. 02 (June 1996): 513–22. http://dx.doi.org/10.1017/s0021900200099939.

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We consider a stochastic fluid network with independent subordinator inputs to the various stations and deterministic internal flow which is of feed-forward type. We show that under suitable conditions the process of fluid contents in the station has a limiting distribution, where the limit holds in total variation and is independent of the initial condition. We also show that this limiting distribution is of product form only for trivial setups.

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5

Asvial, Muhamad, and Taufiq Nugroho. "Simulasi dan Analisis Transmisi Multihop Mobile WiMAX Dengan Metode Hybrid." Jurnal Elektronika dan Telekomunikasi 14, no. 1 (June 29, 2016): 8. http://dx.doi.org/10.14203/jet.v14.8-14.

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Makalah ini membahas tentang pengembangan relay station untuk transmisi downlink Mobile WiMAX dengan menggunakan metode hybrid, yaitu metode transmisi yang menggunakan tiga buah transmisi. Ketiga transmisi tersebut yaitu dua buah transmisi yang melewati relay station terlebih dahulu baru ke receiver dan satu buah transmisi langsung dari pengirim ke penerima. Pada relay station ada dua kondisi yang berlaku, yaitu Decode and Forward (DF) dan Amplify and Forward (AF). Hasil simulasi menunjukkan bahwa ketika Relay Station dalam mode forwarding Amplify and Forward (AF) akan memperoleh BER yang kecil sehingga throughput besar dan merupakan perfomansi yang terbaik. Ketika masing-masing relay station diatur agar menggunakan mode forwarding yang berbeda, misalnya AF pada relay station 1 dan DF pada Relay Station 2 atau sebaliknya akan memperoleh hasil yang sama. Sedangkan ketika kedua relay station diatur untuk menggunakan mode forwarding Decode and Forward (DF), maka BER yang dihasilkan besar dan throughput-nya pun kecil, dan kondisi ini merupakan yang terburuk.

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Tang, Bin Bin, Bao Chen Liu, and Zhi Hua Deng. "A Study on Economic Post Project Evaluation of Cascade Hydropower Stations Based on Data Envelopment Analysis." Applied Mechanics and Materials 438-439 (October 2013): 839–44. http://dx.doi.org/10.4028/www.scientific.net/amm.438-439.839.

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This paper takes cascade hydropower station project as the research object. It puts forward an economic post project evaluation of hydropower station`s analysis framework -- "static analysis and comprehensive evaluation" based on building the evaluation index set and data envelopment analysis. This paper takes economic post project evaluation of Yuanshui cascade hydropower station as an example to verify the science and effectiveness of the analysis framework and model. The results enrich the theory and model technique of economic post project evaluation of hydropower stations.

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Song, Ying, Liang Feng, and Wenchen Cao. "Discussion on operation flexibility of Zhonggui natural gas pipeline." E3S Web of Conferences 300 (2021): 01015. http://dx.doi.org/10.1051/e3sconf/202130001015.

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Zhongwei station of West to east natural gas pipeline is connected to the north of Zhonggui line, and Guiyang station of China-Myanmar natural gas pipeline is connected to the south, which has important strategic significance in Southwest China. At present, the tie line mainly carries out gas transmission from Zhongwei to Guiyang. Only some pipeline sections and offload stations have reverse transmission function, while all compressor stations have no reverse transmission and pressurization function. In order to evaluate the flexibility of the operation of the Zhonggui line and give some suggestions for the preliminary reconstruction, this paper uses the SPS software to establish the pipeline model and simulate the specific working conditions, focusing on the two working conditions of the intermediate station injection forward transmission and the whole line reverse transmission. Through the simulation, we can get the following conclusions: 1. When the intermediate station injects forward gas transmission, which compressor station, gas transmission range and joint operation condition with China-Myanmar line need to be started for Zhonggui line; 2. When the whole tie line is reversed, it is necessary to change the location of the compressor station with the function of reverse transmission and pressurization. Through this study, we can give some reference and evaluation opinions on the lack of flexibility of the current tie line, and also give some reference opinions on the specific implementation of the improvement of the tie line operation flexibility in the future.

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8

Zhao, Yu Hong. "Forward Horizontal Grouting Technology of Subway Station Ends." Advanced Materials Research 1065-1069 (December 2014): 364–67. http://dx.doi.org/10.4028/www.scientific.net/amr.1065-1069.364.

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Guangzhou Metro Line 6 the 8th tender Tianhe Station tunnel shielding meet hole body fissure water is abundant, tunnel soil mass disintegrates easily when water permeate, consolidating with end-advancing horizontal grouting technique. By reasonable choice construction equipment, drilling location, double liquid grouting parameters to control the construction process, enhance process monitoring, get a good reinforcement effect; analyzed the prospects of the construction method.

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Lou, Yu Cheng, Da Xie, Jun Qi Feng, Min Xia Yang, and Yu Zhang. "Control Strategy of the Charging-Discharging-Storage Integrated Station on Reactive Power/Voltage of Power System." Advanced Materials Research 860-863 (December 2013): 1120–28. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.1120.

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Compared to reactive power/voltage index and standard operation procedure (SOP) of power system, the reactive power/voltage index of charging-discharging-storage integrated station is defined, which includes voltage margin and voltage adjustable capability of integrated station ((ISVM & ISVAC). And then the reactive power compensation control strategy of integrated station is put forward and proved to be lossless in power. According to the reactive power regulation characteristic, a reasonable reactive power distribution between shunt integrated stations can be realized by the reactive power/voltage optimization algorithm. And the synthesis optimization can be achieved when AVC applied into integrated station, which will bring value-added benefit to power quality and greatly improve the grid reliability.

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Xiao, Xue Mei, Yan Hui Wang, and Li Min Jia. "Safety Assessment of Subway Station Operation Based on Grey Clustering Method." Advanced Materials Research 748 (August 2013): 1212–16. http://dx.doi.org/10.4028/www.scientific.net/amr.748.1212.

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The safety evaluation index of subway station operation is established from the passengers, equipments and facilities ability, emergency ability and other aspects. Specific to the limitation the traditional entropy weighting method, the improved vertical and horizontal weighting method is puts forward, and safety evaluation method of the subway station operation based on grey clustering method is proposed. Finally, taking the Beijing subway stations in China as an example, the rationality and reliability of this method is verified.

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Ardıçlıoğlu, Mehmet, Özgür Kişi, and Tefaruk Haktanır. "Suspended sediment prediction using two different feed-forward back-propagation algorithms." Canadian Journal of Civil Engineering 34, no. 1 (January 1, 2007): 120–25. http://dx.doi.org/10.1139/l06-111.

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IIn this paper the capability of two different feed-forward back-propagation neural network algorithms, namely Levenberg-Marquardt and gradient-descent, in solving complex nonlinear problems is utilized for suspended sediment prediction. The monthly streamflow and suspended sediment data from two stations, Palu and Çayağzi, in the Firat Basin in Turkey are used as case studies. The first part of the study involves the prediction of sediment data for the two stations. The second part of the study focuses on the prediction of the downstream station sediment data using upstream data. The effect of the periodicity on model performance is also investigated in each application.Key words: suspended sediment, neural networks, multilinear regression, prediction.

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12

Sun, Wei, Pengfei Li, Yagang Liu, and Yu Songhun. "DRAGON IN THE CLOUD, SOARING FORWARD*-East Nanyang Station Cultural Architectural Design Expression." E3S Web of Conferences 236 (2021): 05086. http://dx.doi.org/10.1051/e3sconf/202123605086.

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As a city's transportation gateway, the high-speed rail station is also a business card for displaying and disseminating urban culture. The thesis takes the design process of East Nanyang Station, the largest single-line side station building in China as an example, elaborates the design concept of extracting "dragon in the cloud, soaring forward" as the creative design concept, and discusses the station building from three aspects: the overall plan of the station building, spatial form and spatial details cultural design expression.

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13

Guo, Haiyang, Yun Bai, Qianyun Hu, Huangrui Zhuang, and Xujie Feng. "Optimization on metro timetable considering train capacity and passenger demand from intercity railways." Smart and Resilient Transport 3, no. 1 (February 1, 2021): 66–77. http://dx.doi.org/10.1108/srt-06-2020-0004.

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Purpose To evacuate passengers arriving at intercity railway stations efficiently, metros and intercity railways usually share the same station or have stations close to each other. When intercity trains arrive intensively, a great number of passengers will burst into the metro station connecting with the intercity railway station within a short period, while the number of passengers will decrease substantially when intercity trains arrive sparsely. The metro timetables with regular headway currently adopted in real-world operations cannot handle the injected passenger demand properly. Timetable optimization of metro lines connecting with intercity railway stations is essential to improve service quality. Design/methodology/approach Based on arrival times of intercity trains and the entire process for passengers transferring from railway to metro, this paper develops a mathematical model to characterize the time-varying demand of passengers arriving at the platform of a metro station connecting with an intercity railway station. Provided the time-varying passenger demand and capacity of metro trains, a timetable model to optimize train departure time of a bi-direction metro line where an intermediate station connects with an intercity railway station is proposed. The objective is to minimize waiting time of passengers at the connecting station. The proposed timetable model is solved by an adaptive large neighborhood search algorithm. Findings Real-world case studies show that the prediction accuracy of the proposed model on passenger demand at the connecting station is higher than 90%, and the timetable model can reduce waiting time of passengers at the connecting station by 28.47% which is increased by 5% approximately than the calculation results of the generic algorithm. Originality/value This paper puts forward a model to predict the number of passengers arriving at the platform of connection stations via analyzing the entire process for passengers transferring from intercity trains to metros. Also, a timetable optimization model aiming at minimizing passenger waiting time of a metro line where an intermediate station is connected to an intercity railway station is proposed.

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Xie, Jin Bao, Lei Gao, and Jian Zhang. "Wagon Hours Saved by Transferring Wagons without Sorting Operations at Technical Station." Applied Mechanics and Materials 97-98 (September 2011): 498–502. http://dx.doi.org/10.4028/www.scientific.net/amm.97-98.498.

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For the method calculating the benefits gotten by transferring the wagons at technical stations without sorting operations, two different calculating methods are brought forward at present. This paper firstly calculates the wagon hours consumed both when the basic scheme is applied and the scheme in which the trough wagon flows passing the technical station without shunting operations is applied, and then deduces a formula to calculate the wagon hours saved by through wagon flow passing technical station without sorting operations and analyzes deeply the affecting factors. As a result, it is found that the two calculating methods are the special cases of it. Because in the calculating process the influence of through wagon flow passing the station to the staying time at the station has been taken into account, the method mentioned above is more complete, and could provide a theoretical basis for the calculation.

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Zhang, Yi Fei, and Yu Huan Ji. "Design and Implementation of the Radio & TV Transmitting Station MIS." Applied Mechanics and Materials 556-562 (May 2014): 1909–12. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.1909.

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There are many information sharing problems and integrated management difficulties in the radio & TV transmitting stations, and there are also networked digital construction demands in these stations. In view of the above, this paper puts forward a management information system (MIS) construction scheme. And then this paper does deep research on technique methods and system architecture. Furthermore, this paper illustrates the detailed functions implementation and the practical application of the system. Finally, the paper summarizes the radio & TV transmitting station MIS’s application and performance, and gives some suggestions about the system’s optimization and improvement.

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Yang, Teng, Ying Feng Zhang, and Jun Qiang Wang. "Intelligent Navigation of Assembly Stations Based on Real-Time Manufacturing Information." Applied Mechanics and Materials 432 (September 2013): 442–46. http://dx.doi.org/10.4028/www.scientific.net/amm.432.442.

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In order to improve the real-time control and optimization of assembly process, this article takes the basic execution unitassembly station as the study subject. Based on real-time manufacturing information, the concept of the intelligent navigation of assembly activities is put forward. Through the application of RFID technology to capture the multi-source information, three kinds of navigation services, namely real-time assembly operating guidance service, collaborative manufacturing service among assembly stations and real-time optimization service of task queue, are designed to implement optimal navigation. The presented concept and services will facilitate the real-time data driven process monitor and control between the assembly line and assembly station.

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Liu, Peng Fei, Si Mao Zhang, Lu Geng, Hui Tian, and Tao Wang. "A Calculation Study on the Instrument Air of Gas Transmission Station." Applied Mechanics and Materials 556-562 (May 2014): 4027–30. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.4027.

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Combining the Guangdong LNG station project, the gas station consumption instrument air equipment were analyzed, and the calculation of gas station instrument air system gas storage tank capacity, according to the Guangdong LNG station, the special circumstances, calculate separate switching valve gas storage jars. Through the analysis of the calculation process and result, relevant design wind instrument system is put forward.

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Si, Chuan Sheng. "Layout Planning and Construction Mode of Electric Automobile Charging Station Research." Applied Mechanics and Materials 373-375 (August 2013): 2187–90. http://dx.doi.org/10.4028/www.scientific.net/amm.373-375.2187.

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Electric automobile charging station is an important supporting infrastructure for the development of electric automobile.This article analyzes the electric automobile charging requirements.It puts forward the requirements for charging technology.It also analyzes several factors which affects car charging plannings.Last but not least ,this article puts forward some proposals on layout planning and construction mode.

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Wan, Han Bin, and Yin Xia Yun. "Study on Fire Safety Planning in Chinese Petrochemical Industry Parks." Applied Mechanics and Materials 260-261 (December 2012): 279–83. http://dx.doi.org/10.4028/www.scientific.net/amm.260-261.279.

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In order to explore the regularity of fire station construction in domestic chemical industry park, the study reviewed the typical safety incidents in decade. Under the summary of characteristics of fire disaster, explosion, and leakage incidents, this article puts forward the methods for the construction of fire station system in chemical parks, especially the fire station construction standards, equipment requirements and the enhanced fire station. Hopefully, the study will be beneficial for the future development of fire station construction in chemical industry parks.

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Chen, Zai Ping, and Qing Sun. "Smart Slave Station Design of PROFIBUS-DP Based on DPC31." Applied Mechanics and Materials 229-231 (November 2012): 2319–22. http://dx.doi.org/10.4028/www.scientific.net/amm.229-231.2319.

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The structure and function of Siemens communication protocol chip DPC31 are introduced in this paper, a development scheme of DP smart slave station based on DPC31 is proposed, and the design method for software and hardware of PROFIBUS-DP slave station is put forward, solving the problem of DP slave station based on SPC3 used for motion control.

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Walters, Robert J., J. C. Garner, S. N. Lam, J. A. Vasquez, W. R. Braun, R. E. Ruth, S. R. Messenger, et al. "Materials on the International Space Station—forward technology solar cell experiment." Materials Science and Engineering: B 116, no. 3 (February 2005): 257–63. http://dx.doi.org/10.1016/j.mseb.2004.06.025.

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Shcherbelis, Y., D. S. G. Chambers, and D. C. McLernon. "Microwave feed-forward low noise amplifier design for cellular base station." Electronics Letters 37, no. 6 (2001): 359. http://dx.doi.org/10.1049/el:20010242.

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Wang, Zheng Yu, Yu Wen Jia, Hua Fei Jia, and Cheng Bing Li. "Layout Planning and Evaluation Method of Urban Passenger Transport Station." Applied Mechanics and Materials 295-298 (February 2013): 2592–99. http://dx.doi.org/10.4028/www.scientific.net/amm.295-298.2592.

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It is an effective method of planning transport station rationally to ease the increasing serious traffic problems in recent years. Firstly this paper puts forward stations’ optional methods. Secondly, it provides the latest evaluation index and reduces some redundant indexes by applying rough set theories, which improves the efficiency of scheme selection. Again, by introducing decision makers’ index sensitive function to correct index weight, it makes the multi-attribute decision making process reflect the dynamic changes of the decision makers’ preference indexes, and make up for the existing traffic plaza operation the shortage of the evaluation system. Finally, it establishes a model by the application of extension theory for solving the optimal scheme, which provides a new way of thinking and methods for our traffic station layout plan.

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Zhao, Jin Xian, Min Liu, and Fan Li. "The Study on Safety Management of Drilling-Blasting Metro Station Construction Based on OWA Operator and Gray Theory." Applied Mechanics and Materials 744-746 (March 2015): 997–1000. http://dx.doi.org/10.4028/www.scientific.net/amm.744-746.997.

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This paper proposes safety management evaluation system of metro station project based on factors which the construction techniques and process of drilling-blasting metro station involved.Then the paper uses the OWA operator to determine the weights of the index and adopts gray theory to evaluate safety of drilling-blasting metro station construction based on measure of metro station project safety management.Finally,the paper puts forward recommendations of safety management according to the evaluation results.

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Ma, Tao, Jian Wang, Ming Qi Chen, and Ping Ma. "The Refueling Station Sitting of the HFCV Transportation System: A Programming Model Solution." Advanced Materials Research 524-527 (May 2012): 3224–28. http://dx.doi.org/10.4028/www.scientific.net/amr.524-527.3224.

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One of the main barriers to implementing hydrogen for widespread use in HFCV is the high initial cost of infrastructure. Efficiently allocating resources becomes primary importance. This paper focus on the station siting model based on the assumptions of no competition and two decision-making participants. It optimizes the infrastructure of stations built, both with respect to where the customers are and also with cost of delivery distance taken into account in double-leveled programming method. It takes profit of both the programming department and the consumer into consider, the route arrangement’s impact to cost is also being considered. At last, a simple case is enacted to show the applying of hydrogen refueling station siting model. The result proved that the model brings forward is availability.

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Lan, Ya Jing, Bao Ming Han, and De Wei Li. "Research on Safety Risk Assessment of Large-Scale Railway Passenger Station." Applied Mechanics and Materials 361-363 (August 2013): 1923–26. http://dx.doi.org/10.4028/www.scientific.net/amm.361-363.1923.

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Firstly, this paper expounds the concept of the safety risk assessment of large-scale railway passenger station. Then this paper introduces the overall process of safety risk assessment of passenger station, included assessment preparation phase, factors definition phase and Risk analysis phase. At last, as Beijing South Railway Station as an example, it expounds how to assess the risks and put forward some suggestions.

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Nishimori, Kentaro, Koshiro Kitao, and Tetsuro Imai. "Interference-Based Decode and Forward Scheme Using Relay Nodes in Heterogeneous Networks." International Journal of Antennas and Propagation 2012 (2012): 1–10. http://dx.doi.org/10.1155/2012/103501.

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This paper proposes interference-based decode and forward scheme that utilizes relay stations (RSs). In Long-Term-Evolution (LTE-) Advanced, heterogeneous networks in which femto- and picocells are overlaid onto macrocells are extensively discussed. However, interference between macro- and pico(femto)cells arises due to their different transmit power levels. Unlike conventional cooperative transmission schemes, the RS decodes interference in the first transmit timing period and forwards it to the user equipment (UE) in the second period. Moreover, cooperative transmission can be achieved without stopping the transmission from the base station (BS) to UE when forwarding the interference from the RS to the UE by utilizing the fact that signal-to-noise power ratio (SNR) between the RS and UE is much greater than that between the BS and UE. The basic performance of the proposed method is shown based on computer simulation. Moreover, the interference temperature and shadowing effect are measured when considering the coexistence between macro- and femtocells, and the performance of the proposed method is verified using measured shadowing effect.

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Mangayarkarasi, P., and J. Raja. "An Efficient IR-HARQ Power Allocation for Relay-Aided Cellular Networks." Journal of Circuits, Systems and Computers 27, no. 12 (June 22, 2018): 1850195. http://dx.doi.org/10.1142/s0218126618501955.

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Energy-efficient and reliable data transmission is a challenging task in wireless relay networks (WRNs). Energy efficiency in cellular networks has received significant attention because of the present need for reduced energy consumption, thereby maintaining the profitability of networks, which in turn makes these networks “greener”. The urban cell topography needs more energy to cover the total area of the cell. The base station does not cover the entire area in a given topography and adding more number of base stations is a cost prohibitive one. Energy-efficient relay placement model which calculates the maximum cell coverage is proposed in this work that covers all sectors and also an energy-efficient incremental redundancy-hybrid automatic repeat request (IR-HARQ) power allocation scheme to improve the reliability of the network by improving the overall network throughput is proposed. An IR-HARQ power allocation method maximizes the average incremental mutual information at each round, and its throughput quickly converges to the ergodic channel capacity as the number of retransmissions increases. Simulation results show that the proposed IR-HARQ power allocation achieves full channel capacity with average transmission delay and maintains good throughput under less power consumption. Also the impact of relaying performance on node distances between relay station and base station as well as between user and relay station and relay height for line of sight conditions are analyzed using full decode and forward (FDF) and partial decode and forward (PDF) relaying schemes. Compared to FDF scheme, PDF scheme provides better performance and allows more freedom in the relay placement for an increase in cell coverage.

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Setayeshgar, Leila, and Hui Wang. "Large deviations for a feed-forward network." Advances in Applied Probability 43, no. 02 (June 2011): 545–71. http://dx.doi.org/10.1017/s0001867800004985.

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We consider a feed-forward network with a single-server station serving jobs with multiple levels of priority. The service discipline is preemptive in that the server always serves a job with the current highest level of priority. For this system with discontinuous dynamics, we establish the sample path large deviation principle using a weak convergence argument. In the special case where jobs have two different levels of priority, we also explicitly identify the exponential decay rate of the total population overflow probabilities by examining the geometry of the zero-level sets of the system Hamiltonians.

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Setayeshgar, Leila, and Hui Wang. "Large deviations for a feed-forward network." Advances in Applied Probability 43, no. 2 (June 2011): 545–71. http://dx.doi.org/10.1239/aap/1308662492.

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We consider a feed-forward network with a single-server station serving jobs with multiple levels of priority. The service discipline is preemptive in that the server always serves a job with the current highest level of priority. For this system with discontinuous dynamics, we establish the sample path large deviation principle using a weak convergence argument. In the special case where jobs have two different levels of priority, we also explicitly identify the exponential decay rate of the total population overflow probabilities by examining the geometry of the zero-level sets of the system Hamiltonians.

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Bhar, Kalyan Kumar, and Susmita Bakshi. "Application of artificial neural network for predicting water levels in Hooghly estuary, India." H2Open Journal 3, no. 1 (January 1, 2020): 401–15. http://dx.doi.org/10.2166/h2oj.2020.041.

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Abstract Hydrodynamic models for morphodynamic studies in estuaries require continuous tidal water level data as boundary conditions. However, for the Hooghly estuary in India, measurement of continuous tidal water elevation data at the most downstream point is a very difficult task because of the remote location and the confluence with the deep sea. The tidal water level data at this station are measured for a half tidal cycle which is not useful for hydrodynamic modeling. However, at other upstream stations, tide water level data are measured continuously. Accordingly, in this study, an attempt is made to generate continuous tidal water level data at the remote station, using the data of the neighboring stations as input to an artificial neural network (ANN) model. A three-layered feed-forward backpropagation (FFBP) network with two hidden layers is selected and five different combinations of input vectors are used. Simulated water level data obtained from each model are compared with the observed data graphically as well as by estimating the standard error parameters. The best model suitable for prediction of continuous tidal elevation during any time of the tidal cycle and applicable throughout the year is then identified. It is found that tidal data from the nearest neighboring station are more suitable for training.

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Cak r, O., M. Erduran, H. C nar, and A. Y lmazturk. "Forward modelling receiver functions for crustal structure beneath station TBZ (Trabzon, Turkey)." Geophysical Journal International 140, no. 2 (February 1, 2000): 341–56. http://dx.doi.org/10.1046/j.1365-246x.2000.00023.x.

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Zhang, Shuan Ji, Yi Da Jiang, and Min Zhe Zhang. "Design of Control System for Concrete Mixing Station." Advanced Materials Research 712-715 (June 2013): 2779–82. http://dx.doi.org/10.4028/www.scientific.net/amr.712-715.2779.

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This paper analyzes the concrete mixing station control system problems, puts forward the total design scheme, and designs the hardware and software of programmable logic controller. In the software project, focusing on the automatic run program, aggregate discharge procedures, two feeding procedures, alarm procedures. The design also uses intermediate temporary storage technology, pressurized water discharge technology. The experiments prove that the system is reliable, simple operation, convenient maintenance, good effect.

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Liu, Dun Nan, Chao Chun Luo, and Qing Qi Chen. "Evaluating System for Direct Purchasing Exchange of Major Power Users." Applied Mechanics and Materials 378 (August 2013): 429–34. http://dx.doi.org/10.4028/www.scientific.net/amm.378.429.

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This paper Research on the Intelligent Optimization Operating Modeling of Pumped Storage Power Station in Hunan Power Grid. First it introduces the characteristics of Hunan power grid and analysis the practical requirement of dispatching. Then it brings forward the intelligent optimization model and set up running model for pumped storage power station of Hei Mi-feng. At last, it introduces the application of pumped storage power station in Hunan power grid and proves the effectiveness of the optimization models.

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Li, Bao Quan, Qing Hu Zhang, Ya Jun Wang, and Ju Yong Chen. "Study on Factors Affecting Dust Removal Efficiency of Asphalt Mixing Plant." Key Engineering Materials 599 (February 2014): 334–37. http://dx.doi.org/10.4028/www.scientific.net/kem.599.334.

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In this paper, LB4000 intermittent asphalt mixing plant was taken as an example to analyze the factors effecting mineral aggregate gradation and mixing quality of batch type asphalt mixing station during production process. And effective measures were put forward to ensure dust removal efficiency, mixture quality and high productivity of mixing station under different working conditions.

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Wang, Xuemei, and Jianyang Zhou. "Integrated Governance of Scenarized Space and Community — Reform of Beijing Qianggen Community Service Station and Enlightenment." Administrative Consulting, no. 7 (September 9, 2020): 124–40. http://dx.doi.org/10.22394/1726-1139-2020-7-124-140.

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Community governance is significant for the grass-roots governance in China. Micro-governance and micro-reform starting from community service station is a meaningful measure to explore the improvement of grass-roots governance. Focusing on the reform of community service stations in Beijing, this paper, in consideration to the background of service station reform, describes the history, content and characteristics of the reform of comprehensive setting of Qianggen Community on G Subdistrict of Xicheng District, Beijing, in details, and conducts in-depth analysis based on “The Theory of Scenes” and “The Theory of Governance”. The author holds that community service stations, with new roles taken, new scenarios created and new mechanisms shaped after transformation and upgrading, are turned into governance centers that connect multiple parties, respond to needs of residents better and improve the effectiveness of community governance. The reform practice is committed to the generating of scenarized social space, promoting the manifestation of the integrated governance pattern. The author is inspired to consider the issues related to grassroots governance further and to put forward several suggestions for deepening reform.

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Deregibus, D., M. L. Quartino, K. Zacher, G. L. Campana, and D. K. A. Barnes. "Understanding the link between sea ice, ice scour and Antarctic benthic biodiversity–the need for cross-station and international collaboration." Polar Record 53, no. 2 (March 2017): 143–52. http://dx.doi.org/10.1017/s0032247416000875.

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ABSTRACTThe western Antarctic Peninsula (WAP) is a hotspot of rapid recent regional ‘climate change’. This has resulted in a 0.4°C rise in sea temperature in the last 50 years, five days of sea ice lost per decade and increased ice scouring in the shallows. The WAP shallows are ideal for studying the biological response to physical change because most known Antarctic species are benthic, physical change occurs mainly in the shallows and most research stations are coastal. Studies at Rothera Station have found increased benthic disturbance with losses of winter sea ice and assemblage-level changes coincident with this ice scouring. Such studies are difficult to scale up as they depend on SCUBA diving – a very spatially limited technique. Here we report attempts to broaden the understanding of benthic ecosystem responses to physical change by replicating the Rothera experimental grids at Carlini Station through collaboration between the UK, Argentina and Germany across Signy, Rothera and Carlini stations. We argue that such collaborations are the way forward towards understanding the big picture of biota responses to physical climate changes at a regional scale.

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Zhang, Jie, Randall L. Mackie, and Theodore R. Madden. "3-D resistivity forward modeling and inversion using conjugate gradients." GEOPHYSICS 60, no. 5 (September 1995): 1313–25. http://dx.doi.org/10.1190/1.1443868.

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We have developed rapid 3-D dc resistivity forward modeling and inversion algorithms that use conjugate gradient relaxation techniques. In the forward network modeling calculation, an incomplete Cholesky decomposition for preconditioning and sparse matrix routines combine to produce a fast and efficient algorithm (approximately 2 minutes CPU time on a Sun SPARC‐station 2 for 50 × 50 × 20 blocks). The side and bottom boundary conditions are scaled impedance conditions that take into account the local current flow at the boundaries as a result of any configuration of current sources. For the inversion, conjugate gradient relaxation is used to solve the maximum likelihood inverse equations. Since conjugate gradient techniques only require the results of the sensitivity matrix [Formula: see text] or its transpose [Formula: see text] multiplying a vector, we are able to bypass the actual computation of the sensitivity matrix and the inversion of [Formula: see text], thus greatly decreasing the time needed to do 3-D inversions. We demonstrate 3-D resistivity tomographic imaging using pole‐pole resistivity data collected during an experiment for a leakage monitoring system near evaporation ponds at the Mojave Generating Station in Laughlin, Nevada.

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Yang, Xiaofei, Jun Wang, Hui Ye, and Jianzhen Li. "Semi-Autonomous Coordinate Configuration Technology of Base Stations in Indoor Positioning System Based on UWB." Electronics 9, no. 1 (December 27, 2019): 33. http://dx.doi.org/10.3390/electronics9010033.

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In the global positioning system (GPS) denied environment, an indoor positioning system based on ultra-wide band (UWB) technology has been utilized for target location and navigation. It can provide a more accurate positioning measurement than those based on received signal strength (RSS). Although promising, it suffers from some shortcomings that base stations should be preinstalled to obtain reference coordinate information, just as navigation satellites in the GPS system. In order to improve the positioning accuracy, a large number of base stations should be preinstalled and assigned coordinates in the large-scale network. However, the coordinate setup process of the base stations is cumbersome, time consuming, and laborious. For a class of linear network topology, a semi-autonomous coordinate configuration technology of base stations is designed, which refers to three conceptions of segmentation, virtual triangle, and bidirectional calculation. It consists of two stages in every segment: Forward and backward. In the forward stage, it utilizes the manual coordinate setup method to deal with the foremost two base stations, and then the remaining base stations autonomously calculate their coordinates by building the virtual triangle train. In the backward stage, the reverse operation is performed, but the foremost two base stations of the next segment should be used as the head. In the last segment, the last two base stations should be used as the head. Integrating forward and backward data, the base stations could improve their location accuracy. It is shown that our algorithm is feasible and practical in simulation results and can dramatically reduce the system configuration time. In addition, the error and maximum base station number for one segment caused by our algorithm are discussed theoretically.

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Zhang, Wei Ya, and Jun Wei. "The Experimental Research on Beijing Subway Air-Conditioning System Energy-Saving." Applied Mechanics and Materials 170-173 (May 2012): 2494–98. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.2494.

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The subway is the major means of transportation in Beijing, and it also takes huge energy consumption. Now the consumption of a subway station is 9500 kWh every day, and the proportion of the air-conditioning system energy dissipation is about 64%, in which, a big part of that can be saved down to save and make full use of the energy. The key to the air-conditioning system energy saving is to put forward reasonable energy-saving schemes and feasible method. In this paper, with a subway station in Beijing as a test location，the measurement and data analysis are carried out, and the schemes put forward for energy conservation and emission reduction in subway air- conditioning system.

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Wang, Yu Mei, Xu Yang, and Hao Zhang. "Study on Preventing Override Trip System for High-Voltage Power Grid of Coal Mine Underground Based on the EtherCAT." Applied Mechanics and Materials 273 (January 2013): 389–93. http://dx.doi.org/10.4028/www.scientific.net/amm.273.389.

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When the power supply system for coal mine underground take place a short circuit fault, multilevel switch often respond at the same time. And the existing comprehensive protector cannot satisfy the real-time and rapid quality requirements of preventing override trip system for high-voltage power grid of coal mine underground. So this paper put forward the research for comprehensive protector of preventing override trip based on the EtherCAT. This paper first analyzes the principle and characteristics of the EtherCAT technology; and then puts forward the overall scheme of preventing override trip system; Finally, study and design the slave station and master station of preventing override trip system based on the EtherCAT.

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Yang, Anke. "Give full play to the role of M station and promote the new normal of vehicle emission pollution control." E3S Web of Conferences 268 (2021): 01002. http://dx.doi.org/10.1051/e3sconf/202126801002.

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With the rapid growth of car ownership in use, vehicle emissions have become one of the main sources of urban air pollution. In view of the problems existing in the maintenance and treatment of vehicle emission pollution, this paper puts forward the enthusiasm and necessity of speeding up the establishment of compulsory maintenance station (M station), adheres to the road of realizing practice, and combines with the practical experience of vehicle emission control in Jiaozuo City, puts forward the practical path of the new normalization management of vehicle emission compulsory maintenance, creatively promotes the treatment of vehicle emission Career development. It is of great significance to solve the more and more outstanding vehicle exhaust pollution.

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Kişi, Özgür. "River flow forecasting and estimation using different artificial neural network techniques." Hydrology Research 39, no. 1 (February 1, 2008): 27–40. http://dx.doi.org/10.2166/nh.2008.026.

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This paper demonstrates the application of different artificial neural network (ANN) techniques for the estimation of monthly streamflows. In the first part of the study, three different ANN techniques, namely, feed forward neural networks (FFNN), generalized regression neural networks (GRNN) and radial basis ANN (RBF) are used in one-month ahead streamflow forecasting and the results are evaluated. Monthly flow data from two stations, Gerdelli Station on Canakdere River and Isakoy Station on Goksudere River, in the Eastern Black Sea region of Turkey are used in the study. Based on the results, the GRNN was found to be better than the other ANN techniques in monthly flow forecasting. The effect of periodicity on the model's forecasting performance was also investigated. In the second part of the study, the performance of the ANN techniques was tested for river flow estimation using data from the nearby river.

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U. Umar, M. J. E. Evbogbai, R. E. Okonigene, B. A. Kwembe, and J. G. Bashayi. "Energy Crisis Way-Forward: Diesel Generator-Micro Hydro-Solar Hybrid Power System of Off-Grid Power Station for Rural Development." SIJ Transactions on Computer Science Engineering & its Applications (CSEA) 04, no. 02 (April 21, 2016): 10–17. http://dx.doi.org/10.9756/sijcsea/v4i2/04030080101.

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Zhou, Jianguo, Bo Shi, Guanlan Liu, and Shujun Ju. "Accuracy analysis of dam deformation monitoring and correction of refraction with robotic total station." PLOS ONE 16, no. 5 (May 6, 2021): e0251281. http://dx.doi.org/10.1371/journal.pone.0251281.

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Robotic total stations have been widely used in continuous automatic monitoring of dam deformations. In this regard, monitoring accuracy is an important factor affecting deformation analysis. First the displacements calculation methods for dam deformation monitoring with total stations are presented, and the corresponding mean square error formulas are derived. Then for errors caused by atmospheric refraction, two correction methods are described. Simulations were conducted to compare the displacement accuracy calculated through different methods. It indicated that the difference between polar coordinate method and forward intersection is less than 0.5mm within around 400m’ monitoring range, and in such cases, the polar coordinate method is preferred, as only one total station is required. Refraction correction tests with observations from two dams demonstrated that both correction methods could effectively enhance the monitoring accuracy. For observation correction, correction through the closest reference point achieves better correction results.

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Zhang, Peng, Xing Yu Guo, and Zhi Guang Guan. "Research on Dedusting Technology in the Concrete Mixing Station Powder Silo." Advanced Materials Research 1055 (November 2014): 59–62. http://dx.doi.org/10.4028/www.scientific.net/amr.1055.59.

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The dust emissions from the concrete mixing station has seriously affected the lives of the residents and the workers' health, and it is difficult to achieve national environmental standards. Dedusting and its high environmental cost are currently facing important problem for the concrete mixing station. A spray and whirlwind composite dedusting technology and equipment are put forward by this paper, and applied to the actual concrete mixing station. After application, it can be seen that the spray and whirlwind composite dedusting technology play the effect of dust and match the environmental requirements.

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Bushuev, F. I., M. P. Kaliuzhnyi, N. A. Kulichenko, A. V. Shulga, Ye V. Malynovskyi, S. G. Savchuk, L. M. Yankiv-Vitkovska, and B. O. Hrudynin. "Formation and development of the Ukrainian network of meteor radio observations." Kosmìčna nauka ì tehnologìâ 27, no. 3 (July 2021): 85–92. http://dx.doi.org/10.15407/knit2021.03.085.

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During the decade of research, the Research Institute “Mykolaiv Astronomical Observatory” (RI “MAO”) developed hardware and software for monitoring, extracting, and calculating the parameters of meteor phenomena using the forward scattering by meteor ionized trail of the signals of over-the-horizon FM-stations broadcasted in the frequency range of 88—108 MHz. This allowed creating a network of observations of meteor phenomena in the radio range, which consists of six stations located in Mykolaiv (three stations), Rivne, Lviv, and Hlukhiv. The stations have identical hardware and software. Yagi-Uda antennas with six or eight horizontal vibrators and SDR receivers based at RTR2832U microchip are used to receive radio signals. The station software performs continuous registration and analysis of received radio signals at the output of quadrature detectors of the receivers, automatic detection of moments of appearances of meteor reflections, formation, and sending by e-mail daily reports on detected meteor phenomena. Equipment setup and current monitoring of stations operations are carried out by the RI «MAO» using remote access to station computers via the Internet. Monthly reports on the number of meteor events recorded by each station are posted on the site of Radio Meteor Observation Bulletin (RMOB). The article presents the results, obtained by the network in 2017—2019, confirming a correspondence of daily variations in the number of meteors registered by network stations, to the known dependence (observation of meteors in the apex and antapex), as well as a correspondence between the expected characteristics (in time and intensity) of three meteor showers (Perseids, Geminids and Quadrantids) and that had been obtained by the network. Recommendations are also given in the article for additional research aimed at achieving the main goal, namely, expanding information about meteor phenomena, including the estimating of kinematic parameters (velocities, radiants) of meteoroids and their relationship with potentially hazardous asteroids.

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Liu, Wusheng, Qian Tan, and Wei Wu. "Forecast and Early Warning of Regional Bus Passenger Flow Based on Machine Learning." Mathematical Problems in Engineering 2020 (December 15, 2020): 1–11. http://dx.doi.org/10.1155/2020/6625435.

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This paper mainly forecasts the short-term passenger flow of regional bus stations based on the integrated circuit (IC) card data of bus stations and puts forward an early warning model for regional bus passenger flow. Firstly, the bus stations were aggregated into virtual regional bus stations. Then, the short-term passenger flow of regional bus stations was predicted by the machine learning (ML) method of support vector machine (SVM). On this basis, the early warning model for regional bus passenger flow was developed through the capacity analysis of regional bus stations. The results show that the prediction accuracy of short-term passenger flow could be improved by replacing actual bus stations with virtual regional bus stations because the passenger flow of regional bus stations is more stable than that of a single bus station. The accurate prediction and early warning of regional bus passenger flow enable urban bus dispatchers to maintain effective control of urban public transport, especially during special and large-scale activities.

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Newman, Andrew J., Martyn P. Clark, Ryan J. Longman, and Thomas W. Giambelluca. "Methodological Intercomparisons of Station-Based Gridded Meteorological Products: Utility, Limitations, and Paths Forward." Journal of Hydrometeorology 20, no. 3 (March 1, 2019): 531–47. http://dx.doi.org/10.1175/jhm-d-18-0114.1.

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Abstract This study presents a gridded meteorology intercomparison using the State of Hawaii as a testbed. This is motivated by the goal to provide the broad user community with knowledge of interproduct differences and the reasons differences exist. More generally, the challenge of generating station-based gridded meteorological surfaces and the difficulties in attributing interproduct differences to specific methodological decisions are demonstrated. Hawaii is a useful testbed because it is traditionally underserved, yet meteorologically interesting and complex. In addition, several climatological and daily gridded meteorology datasets are now available, which are used extensively by the applications modeling community, thus an intercomparison enhances Hawaiian specific capabilities. We compare PRISM climatology and three daily datasets: new datasets from the University of Hawai‘i and the National Center for Atmospheric Research, and Daymet version 3 for precipitation and temperature variables only. General conclusions that have emerged are 1) differences in input station data significantly influence the product differences, 2) explicit prediction of precipitation occurrence is crucial across multiple metrics, and 3) attribution of differences to specific methodological choices is difficult and limits the usefulness of intercomparisons. Because generating gridded meteorological fields is an elaborate process with many methodological choices interacting in complex ways, future work should 1) develop modular frameworks that allows users to easily examine the breadth of methodological choices, 2) collate available nontraditional high-quality observational datasets for true out-of-sample validation and make them publicly available, and 3) define benchmarks of acceptable performance for methodological components and products.

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Zhou, Na, Zhi Yong An, Li Juan Li, and Yun Zhu. "iGPS Measurement Network Multi-Station Arrangement Design." Applied Mechanics and Materials 443 (October 2013): 223–27. http://dx.doi.org/10.4028/www.scientific.net/amm.443.223.

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In order to meet the measurement accuracy requirement of some patrol device iGPS position tracking experiment, the most rational, economic configuration and optimal arrangement of iGPS are needed to find. It presented the iGPS dual-transmitter measurement principle based on non-coplanar intersection principle, and also their uncertainty analysis. From the measurement unit of iGPS networkthe dual-transmitter measurement uncertainty simulation results, the relations between measurement accuracy and the intersection angle, azimuth angle, pitch angle and baseline length are studied, which provides a reference for arrangement of multi-transmitter of iGPS. The iGPS multi-transmitter arrangement simulation design of some patrol device iGPS position tracking experiment is put forward. The calibration test results show that: the measurement accuracy of station arrangement design is less than 0.4mm, and satisfied the experiment requirement.

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