bluuebunny/crossref_metadata_2025_split huggingface dataset:
Modeling of Prediction Bandwidth Density with Backpropagation Neural Network (BPNN) Methods
Authors: Hayat Cynthia , Aang Soenandi Iwan , Limong Samuel , Kurnia Johan 
Published: July 2020

Abstract
Using computer networks in campus area which is open access will cause some problems at the speed to access the information. The allocation of bandwidth that provided sometimes does not match the needs of the client, so it takes an accurate prediction of bandwidth usage. This research obtained that Neural Network backpropagation modeling can solve the problem. The stages of research conducted the stage of training and testing phase. Data training is traffic data weekly and conducted by feed-forward back method, with max error 0.001, max hidden layer neuron 5000, constant momentum 0.95 and increase ratio 0.1. Before the data train is conducted, the scaling of the input and target values in the range of 0.1-0.9, then resumes the denormalization after the data train to return the data into Kb form. The results obtained from the training process in the form of comparison data, training performance, and regression. Furthermore, data testing, conducted by using a network that has been developed from the previous results. The test results are shown in the form of real data and predictive data using 8 input layers. In the prediction process, the mean square error generated is 0.0031792 which indicates a low error rate, so it can be stated that the resulting modeling has a level of output accuracy in predicting the use of computer network bandwidth is very high.
Vowel Recognition Based on Face Images Using Fisher Linear Discriminant Analysis
Authors: Lina  , Arisandi Desi 
Published: July 2020

Abstract
Speech and voice recognition has a wide range of uses across industries, including embedded devices such as in smartphones, dictation and assistance applications, smart cars, and others. The input for a speech recognition system could be in the form of audio signals or visual images. This paper presents a vowel recognition system, as parts of a speech recognition system, from face images using Fisher Linear Discriminant Analysis (FLDA) method. Images of human faces are used as input for the system. The vowel recognition process consists of the Canny edge detection stage for ROI extraction, the FLDA method for feature extraction, and the Euclidean distance calculation for vowel classification. The output of the system is a written vowel character. The experimental results showed that the average success rate for the vowel recognition was 66%, with vowel “i” and “e” achieved 100% recognition accuracies.
Tourism Destination Grouping Systems With Partitioning Clustering Method from Geotagged Photo using Android
Authors: Retnosari Maya , Wasino  , Arisandi Desi 
Published: July 2020

Abstract
This application is focused on grouping photos that have information about the location of the photo. To get the location of the nearest tourism destination is by taking the location coordinate value from the uploaded photo then grouping it with a maximum distance of 1 kilometer. The main location for data collection is in Gunung Kidul Regency. This application uses Android for its development. For data processing and transforming scripts into the JSON file uses PHP and for storing the data uses MySQL.The metadata of the photo contains detail information about the photo. In the application shown the few information of its metadata such as the date and time took, image size and resolution, camera maker and model, also coordinate latitude and longitude. The location and metadata values will be shown in the application and stored in the database. Partitioning Clustering method used to find the nearest place within the 1 km radius. First of all by taking the coordinates value from an uploaded photo and stored to a database. The coordinate must be converted from Degree Minute Second Format into Latitude and Longitude Coordinate. After that, the calculation process starting with uses the Euclidean Distance formula to get the nearest distance of the attractions. To display the nearest location, sorting the result values from a minimum value to the maximum value as the final result. The application could be a reference for tourists who will visit Gunung Kidul Regency.
Travel App - showing nearest tourism site using Haversine formula and directions with Google Maps
Authors: Lee G T S , Arisandi D , Wasino  
Published: July 2020

Abstract
Travel App is a tourism-based application that aims to help travelers in providing easy access information on tourism destinations. It shows nearby tourism sites via Google Maps interface within the application and calculates the nearest tourism site with the help of Haversine formula. It calculates the distance between longitude and latitude of places in a sphere. Tourism data used are gathered directly from Yogyakarta, Indonesia. Not every traveler knows which places to visit or which nearest tourism site they could reach within certain distance and time. This application is able to provide essential travelling information, such as the location of tourist places, their opening and closing hours, address, and photos. Through this app, travelers could explore tourism destinations without being worried not knowing where they could make a stop in their itinerary. Travel App has been tested in the Yogyakarta area and has been shown to deliver its intended functional purposes.
The Influence Of IOT (Internet Of Things) Against Industrial Development In Tanah Abang Market
Authors: Natanael Yorent 
Published: July 2020

Abstract
In the current Millennial era the economic development of a region is strongly influenced by technological developments, millennial words always appear in every public conversation that exists in the Indonesian society, both in terms of education, economy, culture and religion, always highlighting the important role of the millennial generation. Not separated from technology Digital lifestyles also affect the types of jobs, many new jobs emerge that are compatible with the millennial era. The work that is desired by the current generation is a more exciting job than the generation of old. Such as Online shop, Online Transportation, You tuber, or Online Business Program, this term we may often hear lately. But did you know that now an online business is one industry with potential business potential. This happens along with the times.
Aluminum Frame Product Development Using Quality Function Deployment and Value Engineering at PT KSN
Authors: Perdana Surya , Usman Ridwan , Fatimah Hunusalela Zeny 
Published: July 2020

Abstract
PT KSN as an aluminum frame supplier for apartment residential buildings and office buildings faces various demands from consumers. At present there is no standard design for aluminum jamb products, so the modification of the jamb creates an expensive price which makes it difficult for companies to compete with similar manufacturers. The analysis used in this research is Quality Function Deployment (QFD) and Value Engineering (VE). The determination of the technical specifications of the protruding shape and width of the glass grove is carried out using the PT KSN design rules based on the existing gasket type. some new investment attributes are needed, namely concerning the investment component Dies, the cost of the Design process, CAM programming, and the CAM manufacturing process. Installation of glass with gaskets and without using sealants the installation process is more efficient, easy and safe, the use of aluminum material can be reduced so that production costs are lower and the proposed price offered by consumers is more competitive.
The hydro-ecological state assessment of piedmont rivers of the Republic of Uzbekistan in the climate change context
Authors: Akhmedova T , Akramova I , Radjabov A , Mavlyanova D , Baymanov R 
Published: July 2020

Abstract
This article describes the dynamics of the spatial and temporal distribution of pollutants and the main sources of surface water pollution by household and industrial wastewater. It emphasizes that water pollution increases from the headwaters to the river mouth, and in lower reaches of the river, there is not natural river water, but wastewater. Industrial, household and agricultural wastewaters discharged into water bodies without treatment, or often after inefficient treatment, change the hydro-chemical and hydro-biological regimes that affect the quality of water and disrupt the normal functions of aquatic flora and fauna. The data obtained from 1991 to 2019 were used as the basis for this article.
Influence of the shape of the pressureless trapezoidal channel and roughness on the pressure loss of the machine channels of the pumping stations
Authors: Uralov B , Saidkhodjaeva D , Kurbonova U , Baymanov R 
Published: July 2020

Abstract
In this work, we consider the general equation of fluid motion in pressureless channels and the functional dependences of the coefficient of hydraulic friction on the Reynolds number, relative roughness, and the shape of the live section of the channel, as well as the resistance formulas for the simplest channels with respect to the cross-sectional shape (round and infinitely wide rectangular), and then for channels with a more complex cross-sectional shape. To take into account the effect (on the pressure loss) of the channel cross-sectional shape and the presence of a flow with a free surface in it, additional correction factors are introduced (using the hydraulic radius concept). In conclusion, it is concluded that the values of the mentioned correction factors can and should be refined only as a result of the relevant experiments. The work also examined the patterns of hydraulic resistance in engine channels of the correct form of a live section with uniform turbulent fluid motion. Formulas of hydraulic resistance in the machine channels of a simple and complex outline of a live section are given.
Filtration characteristics of pressure pipelines previous being in operation
Authors: Loktionova E , Miftakhova D , Yaroslavtseva E 
Published: July 2020

Abstract
The issue of changing the hydraulic characteristics of the pipelines previous being in operation is of great practical importance. To determine convenient objective parameters for assessing the reduction in pipeline throughput during their operation the experimental studies results of three sections of the pressure pipeline with artificial clogging were presented. It is shown that for pipelines with the same initial resistance at the same degree of clogging, the numerical values of the resistance coefficients are practically independent of the ratio of length to diameter. The rationale for the transition from traditional hydraulic resistance coefficients to filtration coefficients was given. The dependence of the relative filtration coefficient on the clogging degree is recommended as a universal characteristic of the throughput of pressure pipelines previous being in operation. It is proved that with small degrees of clogging, a relative decrease in the pipeline throughput occurs more intensively than with large degrees of clogging.
Development of Energy-Saving Modes of Irrigation Pump Stations
Authors: Ergashev R , Azizov O , Dehkanova N , Bozorov A 
Published: July 2020

Abstract
The article substantiates the need to develop energy-saving modes of large irrigation pumping stations and pumping units. The Object studies are centrifugal pumps residing in usages on the pumping station of the Republic. In the process of performing, the studies were used main positions theoretical mechanical engineers, hydraulics, theories blade pump, processing result field and laboratory experiment, graphic and analytical methods. The Purpose thesis work is increasing to efficiency to usages centrifugal pump irrigation systems by development scientifically-motivated ways of the discovery rational state of working and complex action on increasing of the working factors them, on the base of the use theoretical bases motivations factor, influencing upon the intensity of wear-out details pump and improvements of the hydraulic processes in running part pump unit. The new features of the pump is designed on the base of the methods calculation corner of the entry and output of working water travel about changed designs of the pump. The substantiation of technological, environmental factors is given. Considering that are pumping units are energy-consuming objects, recommendations are given on upgrading the flow part of the pumps.
Hydraulic elevator for cleaning sediment of a water outlet of a reservoir
Authors: Shaazizov F , Badalov A , Shukurov D , Yulchiev D 
Published: July 2020

Abstract
Many scientists of the world were engaged in the study and development of various schemes and models of hydraulic elevators for the purpose of excavation and hydraulic transport of hydraulic mixtures [1-22]. For the specific conditions of the selected research object, we determined the main sizes and parameters of the hydraulic elevator, which allows cleaning the water area of the bottom water intake of the spillway of the Tupalang hydroelectric station, using the hydrostatic pressure at the object concentrated in front of its dam. To clarify the particle size distribution of sediment deposited at the inlet head of the water intake of the Tupalang reservoir water outlet, samples of bottom sediments were taken and their particle size distribution was analyzed in laboratory conditions. At the water intake area of the 1st tier of the Tupalang reservoir, the deposited sediments are represented by smaller particles, the diameter of which is from 5 mm to 0.1 mm, and in percentage terms, their share is 95%. The main results are given for calculating and justifying the parameters of a hydraulic elevator for cleaning sediment from the water area of the inlet head of the water outlet structure of the first tier of the Tupalang reservoir. When determining and substantiating the main sizes of the hydraulic elevator, theoretical and experimental research methods were used, and the method of S.M.Shtin was applied.
FLOW-3D software for substantiation the layout of the port water area
Authors: Pan B , Belyaev N 
Published: July 2020

Abstract
It is necessary to exclude the occurrence of significant waves in the inner water area of the port and at the berthing facilities when designing breakwaters. The article presents the results of the calculations of water movement in the harbor area. The most secure options for the location of the port entrance and its size for a given object were identified. The possibility of using the FLOW – 3D program to select planned and constructive solutions at the stage of the preliminary layout of the port water area is substantiated.
Underground pipeline strength under non-one-dimensional motion
Authors: Sultanov K , Khusanov B , Rikhsieva B 
Published: July 2020

Abstract
This paper is devoted to the development of a method for determining longitudinal stresses in underground pipelines under periodic dynamic load, taking into account the complex process of pipe-soil interaction. The method is based on the solution of a two-dimensional axisymmetric unsteady wave problem for the “underground pipeline-soil” system. In this case, the pipeline and soil are taken as linearly deformable bodies. On the surface of their contact, the force of interaction (the friction) is determined from a two-stage (pre-limit and limit) law. The problem is solved numerically - by the finite difference method according to the Wilkins scheme. The changes in longitudinal stresses, velocities, and displacements over time were obtained for various sections of the pipeline and soil. An analysis of the results of numerical calculations showed that when a plane wave propagates along a pipeline with external friction, the hypothesis of flat sections is practically met, which justifies the regularity of considering similar problems in a one-dimensional statement. A multiple increase in the values of longitudinal stresses in the pipeline as compared to the same stresses in soil has been established. The maximum possible value of the stress growth is determined depending on the physic mechanical properties of the pipe material and soil. The role of the interaction force (the friction force) in the multiple increase in longitudinal dynamic stresses in underground pipelines under the effect of dynamic loads was determined.
Earthquakes and seismic safety of waterworks facilities in the Central Asian region
Authors: Akhmedov M , Juraev D , Khazratkulov I 
Published: July 2020

Abstract
Central Asian region is an earthquake prone zone. At water management engineering, one of the central and great role play dams, water supply systems, etc. The seismic safety of these objects has great importance. In areas subject to seismic effect, the cases were observed when such structures were significantly damaged, and in some cases even destroyed. It leads to the long-term shutdown of the main water supply systems and it causing great material losses. The main aim of the issue is an analysis of the effects of strong earthquakes for waterworks facilities, proposing measures that are necessary for the urgent determination of the technical condition of an operating structure and the development of recommendations for further safe operation. There were considered lessons from past events also and strategies for sustainable development in the future by taking into account local features.
Diagnostic tests of vertical pumps modernized pump stations
Authors: Glovatsky O , Azizov O , Shamayramov M , Bekchanov F , Gazaryan A , Ismoilov N 
Published: July 2020

Abstract
The article discusses the methods of maintenance and technical diagnostics of large vertical pumping units of modernized pumping stations of the largest cascades of the Amu-Bukhara and Karshi channels to ensure reliability during their operation, assesses the qualitative and quantitative changes in their modes. The operation of large pumping stations poses a number of problems that cannot be solved without experimental studies. The aim of the research is the problem of comprehensive diagnostics of pumping units and the development of new export-oriented diagnostic devices. The use of new designs of pumping power and diagnostic equipment involves the use of mathematical modeling of control of the operating modes of machine channels, which gives significant savings. Methods of accounting for cavitation – hydroabrasive wear of the blades are based on the study of the movement of the hydroabrasive flow along the radius of the impeller. Recommended elimination of pump operating modes with a maximum wear rate of their parts.
Interaction of a rigid underground pipeline with elastic-viscous-plastic soil
Authors: Sultanov K , Khusanov B , Rikhsieva B 
Published: July 2020

Abstract
The results of numerical solutions of an axisymmetric two-dimensional problem of a rigid underground pipeline interaction with elastic-viscous-plastic soil are presented. The pipe-soil interaction begins when the underground pipeline moves in an axial (longitudinal) direction. The changes in velocity, displacement, shear stress, shear strains in the direction of the pipeline axis for fixed points of soil along the radial axis are obtained at a linear change in the given longitudinal velocity of the pipeline from zero to a certain constant value. An analysis of numerical results showed that the changes in the interaction force on the contact soil layer occur according to a two-link law with the manifestation of the peak value of shear stresses. When the pipeline moves at a constant velocity, the values of displacement over time increase, and the shear stress values remain constant. Obviously, at this stage, the Coulomb law is fulfilled. This result agrees with the results of known experiments. The obtained theoretical dependences of shear stresses on soil displacement relative to the underground pipeline reveal the formation mechanisms of the conditions for the underground pipelines - soil interaction. This result could not be obtained within the framework of the one-dimensional problem of the pipe - soil interaction.
Assessment of Chimkurgan water reservoir sedimentation processes
Authors: Gapparov F , Nazaraliev D , Eshkuvatov Q 
Published: July 2020

Abstract
Uzbekistan is an inland country with very dry summers and cold winters. The main course of the economy is agriculture. There are two basic kinds of agriculture in terms of irrigation: rainfed and artificial irrigation systems. Therefore, in long dry summers it is reasonable to build water reservoirs to keep enough water resources for vegetation period. Because of sedimentation transport water reservoirs sometimes quickly filled with sediment. Estimating the effects of potential sediment accumulation in reservoirs is an important element in the planning of the dam project. Sediment accumulation in a reservoir may reduce the useful storage of water in this reservoir, change the water quality near the dam, increase flooding level upstream of the dam due to sediment aggradation, influence the stability of the stream downstream of the dam, affect stream ecology in the dam region, etc. This article provides a correlation between the reservoir volume reduction from the bottom to a given level, based on the amount of water flowing into the Chimkurgan reservoir and the river basin monitoring data. Based on the results of observations and calculations, the current state of the reservoir was formed on the basis of GIS tools. In the first step we constructed a flow duration curve, which is the cumulative distribution curve of the stream runoff passing the dam.
Underground pipelines dynamics problem solution under longitudinal seismic loading
Authors: Bekmirzaev D , Mansurova N , Nishonov N , Kosimov E , Numonov A 
Published: July 2020

Abstract
In this article are considered some problems of oscillations of underground pipelines under seismic loading. The resulting system of equations is solved by the finite-difference of the second order of accuracy. The program is based on a computer algorithm implementation on oriented language Borland Delphi 7. Conducted theoretical and computational-experimental studies solve the problem of assessing the stress-strain state of underground pipelines under seismic effect the axes of the pipeline. The Stress-strain state of the underground pipeline is studied at linear and non-linear interaction with the soil. Linear and non-linear solutions are compared. Dangerous points of maximum normal stress occurrence under seismic loading in the underground pipeline are determined to take into account elastic pipe-soil system interaction. The conducted computational and experimental studies allow solving the problems of assessing the stress-strain state of pipelines under seismic loading, which is important for practical calculations.
Forebays of the poligonal cross-section of the irrigating pumping station
Authors: Matyakubov B , Mamajonov M , Shakirov B , Teplova G , Shakirov B 
Published: July 2020

Abstract
The article discusses the use of the design of the forebays of a polygonal cross-section to improve the hydraulic characteristics of the water intake structures of pumping stations, in which the longitudinal slope in the direction of the middle chamber is i = 0.1, the adjacent longitudinal slope is 0.15 and with the extreme chambers the longitudinal the slope is 0.2. The faces of each chamber with a forebay have a transverse slope equal to i

c

= 0.1 and the angle of taper of the forebays in the plan is α = 35°. In the joint operation of 5 pumps, for the forebays of a polygonal cross-section, the total resistance coefficient is ∑ξ
total ext.
= 0.568 and for a typical ∑ξ
total ext.
= 0.72. With the simultaneous operation of 5 pumps, the average supply of 3 pumps is 0.0051 m3/s, 2, and 4 pumps, respectively 0.00498 … 0.00504 m

3

/s, for 1 and 5 pumps, 0.00478, and 0.00481 m

3

/s, respectively at the extreme pumps, the flow rate increases by 4.9…6.3% relative to the standard forebays.