Delphi Programming Language Research Articles

Modeling of informative features based on the amplitude-phase frequency response during bioimpedance studies at a biological facility

The purpose of research is to develop and test a technique for forming informative features using descriptors for neural networks designed to assess medical risks based on the analysis of transient processes in biomaterial in a living organism (in vivo).Methods. Studies suggest the use of test electrical effects on areas of the body with unusual conductivity to obtain the amplitude-phase-frequency characteristic of the impe-dance of the biomaterial on which the specified effect was performed. The coordinates of the Cole graph of this biomaterial were used as key para-meters. To form the Cole graph, the Carson transform was used, based on transient data obtained using a four-terminal, where the main element is the impedance of the studied biomaterial. The input signals for the four-terminal were a sequence of sinusoidal pulses.Results. Based on the E20-10 data collection system manufactured by L-Card CJSC, a software and hardware complex has been developed for digitizing transient processes in four-terminal circuits, the element of which is the impedance of biomaterial in anatomical areas with abnormal electrical conductivity. Software in the Delphi programming language was developed to generate test signals and record biomaterial responses to these exposures. A theoretical model was also proposed explaining the conversion of the samples of the transition characteristic of the four-terminal with the impedance of the biomaterial to the Cole graph of this biomaterial.Conclusion. The study confirms that the use of a linear biomaterial impedance model contributes to the formation of descriptors based on the amplitude-phase-frequency characteristic, taking into account its dissipative properties. Building a Cole graph taking into account these dissipative characteristics allows us to develop classifiers of medical risks of socially significant diseases.

Modeling of semiconductor heterostructures for energy converters and sensors

A set of modeling programs for constructing a sequence of energy zones of heterojunctions is presented for analyzing the distribution of charge carriers in the heterostructure and internal characteristics, for describing the processes of charge transfer and accumulation. Wolfram Mathematica analytical system and Delphi programming language were used. The main elements of materials are semiconductors, metals of contact structures and injection regions of nonequilibrium carriers. The programs allow determining the structural characteristics of materials, active zones and spatial charge regions, calculating quasi-Fermi levels and built-in potentials, as well as the efficiency of heterostructures in general and for separation-charge collection, charge accumulation, determining the type of metallization of barrier or ohmic contact.

RANCANGAN BANGUN PROTOTYPE ALAT PENGERING KERUPUK OTOMATIS BERBASIS ARDUINO UNO

Along with the increasing times and the more busyness of humans, drying problems often become a very troublesome problem because it is still conventional by using direct sunlight. For example, when the crackers are drying, rain falls when the workers are doing other work. Of course the workers will feel anxious if the crackers that have been dried in the sun are wet with rain and have to be redried, so this research proposes to help the workers drying the crackers. This research will discuss the workings of the rain sensor, LDR (Light Dependent Resistor) sensor and heat / temperature sensor for drying crackers with the Arduino Uno system. This study aims to make a prototype cracker drying device that can automatically open or close the protective tarp for the cracker drying rack when it rains or the sun's light intensity has darkened using the Arduino Uno microcontroller. The design of this application uses the method prototype and uses the DELPHI programming language by utilizing the Arduino IDE and using the Microsoft Access database. The results of this study were obtained in the form of an automatic cracker drying tool application that can detect weather conditions during drying well. This tool will help the drying process from the beginning of drying until the crackers are completely dry and ready to be marketed.

SOFTWARE FOR INTERPRETING THE RESULTS OF VERTICAL ELECTRICAL SOUNDING IN THE FORM OF A THREE-LAYER GEOELECTRIC STRUCTURE

By monitoring the state of the grounding system, electrical engineering personnel must independently solve the problem of interpreting the results of vertical electrical sounding (VES) of the soil using their own knowledge and practical experience. During the interpretation, outdated palettes or expensive software complexes are used, which allow analyzing only two-layer soils. This leads to a large number of errors and inaccuracies in the assessment of the state of the grounding system and worsens their operation. In this regard, a program was developed for the interpretation of the results of the VES in the form of a three-layer geoelectrical structure. The program is implemented in the Delphi programming language and contains two parts: computational and graphic. The computational part of the program uses point source current, Hooke-Jives, equivalence and reliability theory methods to optimize the determination of geoelectric model parameters. The graphical part allows the user to visualize the obtained results and perform their analysis. To confirm the reliability of the developed program, a comparison of the results of the experimental measurement of the resistance of the grounding arrangmants with the results of the calculation using the program was made for 65 substations with a voltage class of 35 kV of one of the regional energy companies of Ukraine. The obtained results showed that the program gives reliable results and can improve the quality of monitoring the condition of grounding systems, and accordingly increase the reliability and safety of operation of electrical stations and substations.

Design and Development of Data Processing Applications for Make-Up and Wardrobe Service Orders in Excel Wedding Organizer

Data processing of make-up and wardrobe orders on the Excel wedding organizer in its current operations is still done manually, so the admin who wants to process the data still has to record manually on paper, besides that reporting to the CEO also still uses recording in a book. Based on these conditions, this study aims to design and create an information system for data processing of Android-based make-up and wardrobe orders in Excel wedding organizer. The stages of system development in making this information system use the prototyping model method which consists of planning stages, analysis stages, design stages, and implementation stages. Using the Delphi programming language in its manufacture and HeidiSQL as the database. The result of the research is an Android-based make-up and wardrobe data processing information system that assists the admin in processing order data.

AUTOMATICAL MEASURING DEVICE FOR RESEARCHING THE ELECTRICAL CHARACTERISTICS OF PHOTOELECTRIC MODULES

The article describes the developed and manufactured measuring device for measuring the electrical characteristics of photovoltaic modules depending on their temperature and radiation spectrum. The measuring device consists of a hardware and a software part. The basis for the hardware part is a personal computer with a built-in measuring board of a 16-bit analog-to-digital converter. The analog-to-digital converter processes signals from measuring current, voltage and temperature converters. As measuring current converters, shunts made of high-precision non-inductive resistance resistors were used. To measure a voltage greater than 5 V, dividers of the НP-9258 and НP-9251 type with conversion factors of 1:100 and 1:10, respectively, were used. The measuring device controls the load made of non-inductive active elements. In order to change the spectral composition of radiation, four light filters are used, which transmit light with wavelengths in the red, yellow, green and blue region of the spectrum. After replacing them on the radiation source, the energy of the incident radiation must be set at the level of 1000 W/m2. The software that provides the measurement process is written in the Delphi programming language and works, according to the algorithm, in automatic and manual modes. Using the measuring device the volt-ampere and volt-watt characteristics of the photovoltaic module were obtained depending on its temperature and radiation spectrum. The measuring device works in manual and automatic modes. In manual mode you can measure at least one volt-ampere characteristic, and if necessary, any number of them. In automatic mode, measurements of the current-voltage characteristics of the photovoltaic module are performed as many times as necessary to complete the transition process of heating the photovoltaic module to a certain temperature. The developed measuring device was used to study the monocrystalline photovoltaic module. The volt-ampere and volt-watt dependences of the photovoltaic module were obtained, depending on its temperature and radiation spectrum. Conclusions were made regarding the sensitivity of the photovoltaic module to the spectrum of radiation in the visible range and the decrease in energy efficiency with increasing temperature.

Electronic System for the Remote Monitoring of Solar Power Plant Parameters and Environmental Conditions

An electronic monitoring system was developed to monitor and analyze operating and environmental parameters of solar power plants. The electronic monitoring system consisted of two stages: the first stage was designed to receive data from temperature, illumination, voltage, electric current, and power sensors and modules; the second stage is for data collection, analysis, and display. Microcontrollers PIC18F25K22 (for data collection) and PIC24FV32KA302 (for data analysis and display) were used to implement the electronic monitoring system. RF module EBTYE OEM/ODM E32-433T20DC SX1278 433 MHz UART was used to transmit data to the central server. For the microcontrollers of both stages, original control program algorithms were developed, according to which program codes were written using the C programming language. Data were collected using the MySQL database. The virtual interface and application for displaying instant data were created using programming language Delphi. Data monitoring systems in the market have a number of shortcomings due to the difficulty of ensuring a centralized data management process. In addition, sensors used in most systems require a Wi-Fi Internet connection to transmit information, which is difficult to secure in remote solar parks. The aim of this work is to show that information transmission from individually deployed sensors to the central server can be ensured using the principle of RF communication, and data collection and analysis in a centralized way without additional costs for Wi-Fi networks in remote areas.

ENSURING ELECTROMAGNETIC COMPATIBILITY OF MICROPROCESSOR DEVICES

The research is devoted to the problem of electromagnetic compatibility of toroidal chokes with microprocessor elements of printed circuit boards. The scientific novelty of the work lies in the determination of the most favorable option for the location of the chokes through the minimization function. The analysis of target vector functions and the most effective option is carried out. The purpose of the study is to determine the permissible location of the chokes, at which the electromagnetic interference, they create for the microprocessor elements of the printed circuit board, will be minimal. The object of the study is a printed circuit board of a microprocessor-based device for measuring the grounding resistance of supports of high-voltage power lines, in the power circuit of which toroidal chokes are used. The subject of this work is the electrophysical properties of toroidal chokes, which are sources of electromagnetic interference for microprocessor elements of control and measuring instruments. The research methodology consists in carrying out numerical experiments to calculate the electromagnetic field with subsequent analysis of the obtained vector functions of the magnetic field strength H on the board surface. The assessment of the influence of interference caused by chokes is carried out using the developed mathematical model and numerical methods for calculating the electromagnetic field. For computational calculations, the authors have developed a software algorithm implemented using the Delphi programming language. The choice of the mutual arrangement of the chokes on the microprocessor integrated circuit is carried out as a result of solving the optimization problem by the gradient method, taking into account the given restrictions on the condition of electromagnetic compatibility. To assess electromagnetic compatibility, a design model of a printed circuit board of a microprocessor device with toroidal chokes was developed. As a result of a numerical experiment, a method for automated determination of the location of toroidal chokes within an integrated microcircuit of resistance devices of the proposed control of electrodes of overhead power transmission line supports was tested. As a result of research, it was found that for electromagnetic compatibility of microelectronic devices, it is sufficient to place the toroidal chokes of power circuits closer to the corners of the printed circuit board. In other design cases, the EMC class 1 requirement is not met.

Mathematical Simulation of Forest Fuel Pyrolysis and Crown Forest Fire Impact for Forest Fire Danger and Risk Assessment

In order to predict and assess the danger from crown forest fires, it is necessary to study the thermal degradation of different forest fuels in a high-temperature environment. In this paper, the main characteristics of pyrolysis accompanied by moisture evaporation in a foliage sample of angiosperms (birch) were investigated within conditions typical for a crown forest fire. The heat and mass transfer in the forest fuel element is described by the system of non-stationary non-linear heat conduction equations with corresponding initial and boundary conditions. The considered problem is solved within the framework of the three-dimensional statement by the finite difference method. The locally one-dimensional method was used to solve three-dimensional equations for heat conduction. The simple iteration method was applied to solve nonlinear effects caused by the forest fuel pyrolysis and moisture evaporation. The fourth kind of boundary conditions are applicable at the interface between the sub-areas. Software implementation of the mathematical model is performed in the high-level programming language Delphi in the RAD Studio software. The characteristic changes in the sample temperature field and the phase composition under high-temperature exposure from a forest fire are presented. The induction period of the thermal decomposition of dry organic matter in the sample was determined. Recommendations are made about key features of accounting for the pyrolysis and evaporation processes when predicting forest fire danger. The research results can be used in the development and improvement of systems for predicting forest fire danger and environmental consequences of the forest fires.

Программное средство для нахождения оптимальной последовательности технологических операций производственного процесса лесозаготовительного предприятия

The development of a software tool for finding the optimal sequence of technological operations of the production process of a logging enterprise, as well as the principles of its operation, is considered. Planning of logging production is quite a complex process, since it is necessary to determine the optimal strategy of activity, taking into account a large number of factors, increasing revenue and reducing costs. There are many options for organizing the technological process of harvesting and hauling wood. The program is developed on the basis of the algorithm given in the scientific literature for solving the problem of finding the optimal technological sequence of logging operations in order to automate calculations that are time-consuming. The application is created in the Delphi programming language in the Delhi XE2 RAD Studio development environment. The data used for the calculations is presented in an Excel table. To find the minimum cost flow, the program implements the Basaker — Gowan and Ford — Bellman algorithms. The result of the software tool is the optimal technological chain of delivery of wood from the cutting area to the consumer and corresponding costs. The results are displayed on the screen and can be saved to an Excel file. It is possible for the user to get help information about working with the program. With the help of the developed application, the technological chain of operations for the primary processing and transportation of harvested wood from the cutting area to the consumer is determined, which is characterized by a minimum cost for performing all types of work. The testing showed that the software can be used in practical activities by the head of the logging process at the enterprises of the forest industry.

Application of computer technologies for calculation of gears at studying of a course " Details of machines"

The computer program GearKURT has been created to calculate mechanical gears. The program allows you to calculate gears:
 - closed cylindrical spur gear
 - closed cylindrical helical gear
 - open cylindrical spur gear
 - Novikov's gear
 - closed bevel spur gear
 - closed bevel gear with indirect teeth
 - open bevel gear
 - worm-gear.
 The computer program has a dialog interface written in the object-oriented programming language Delphi and compiled into an exe-file. The program allows you to choose the necessary material and method of heat treatment for the manufacture of gears, to calculate the optimal geometric dimensions and transmission parameters, to determine the design of gears. The program provides all the necessary reference materials in the form of tables and graphs, which must be used to select the coefficients and other values necessary for calculations. The program provides access to the theoretical material of the course "Machine Parts" and the ability to save the results of calculations in a separate file. Recommendations for using this program are given.

Mathematical Simulation of Forest Fuel Pyrolysis in One-Dimensional Statement Taking into Account Soot Formation

Pyrolysis (thermal decomposition) is considered as the most important stage of a forest fire before direct forest fuel ignition. This process is accompanied by soot particle formation. Such particles have a negative impact on public health in the vicinity of forest fires. The purpose of this article was to investigate the heat and mass transfer process occurring in a typical forest fuel element (birch leaf). The pyrolysis and soot formation processes were taken into account, and various forest fire scenarios were considered. Computational experiments were carried out using the high-level programming language Delphi. Heat and mass transfer processes were described by nonlinear non-stationary differential heat conduction equations with corresponding initial and boundary conditions. The differential equations were solved by the finite difference method. Nonlinearity was resolved using a simple iteration. The main results of the research were (1) physical and mathematical models proposed for modeling forest fuel pyrolysis, taking into account soot formation and conditions corresponding to various forest fires; (2) a computer program coded in the high-level programming language Delphi; (3) the obtained temperature distributions over leaf thickness; (4) volume fractions obtained for various components dependent on time and space coordinates. The qualitative analysis of the dependencies showed that the temperature distributions in the birch leaf structure are similar for all forest fire types and differ only in absolute value. The intensity of the soot formation process directly depends on the forest fire type. The presented results should be useful in predicting and assessing forest fire danger, including near the facilities of the Russian Railways.

Mathematical Simulation of Heat Transfer in the Structures of a Passenger Carriage Under the Influence of Forest Fires

Forest fires have a negative impact on the functioning of the railway. The aim of the work is a mathematical modeling of heat transfer in the structures of a passenger carriage under the influence of radiation from a forest fire front. The originality of the study is explained by modeling heat transfer in structural materials of a passenger carriage under the influence of radiation from a forest fire front. Low and high intensity surface forest fires, crown forest fires are considered. Most of the previously published works are devoted to the analysis of the causes of forest fires, including the ones near the railway. The software implementation of the mathematical model is performed in the RAD Studio software in the high-level programming language Delphi. Mathematically, heat transfer in the materials of a passenger carriage is described by non-stationary differential heat conduction equations with corresponding initial and boundary conditions. In order to solve the partial differential equations, the finite-difference method and the locally one-dimensional method are used. Difference analogs of differential equations are solved by the marching method. The main findings of the study are: 1) physical and mathematical models of heat transfer in the structures of a passenger carriage under conditions of exposure to radiation from a forest fire; 2) the obtained temperature distributions in the inhomogeneous structure of the passenger carriage wall; 3) simulation has shown that a low-intensity surface forest fire causes a relatively safe forest fire impact scenario, while a high-intensity surface forest fire impact is a potentially dangerous scenario; 4) the scenario of the impact of a crown forest fire is unambiguously dangerous at any parameters; 5) the results obtained in this paper and the expected in future investigations will create a physical basis for the development of software for fire safety systems for rolling stock on the railway. The presented results are proposed to be used for forecasting, monitoring, and assessing forest fire dangers during the operation of the rolling stock of JSC Russian Railways.

Rational design for a friction unit of a disc-shoe brake

In this study, we develop a rational design for a friction unit provided that restrictions are imposed on the fly-wheel masses of rotating elements and the onset of a thermal stabilization state. The input calculation data were the braking torque, specific pressure in the friction pair, angular velocity and the diameter of the brake disc hub. The geometric programming method was used at the preliminary stage to calculate the design and operational parameters of a discshoe brake. Further, the parameters were refined based on the conditions of mutually exclusive factors (energy intensity and braking time) and the stress-strain state. On the basis of the proposed rational design for a friction unit, a software application for calculating in the DELPHI programming language was developed. The ranges of design parameters were determined at the preliminary design stage: a brake disc diameter from 0.237 to 0.37 m; the width of working surfaces from 0.0335 to 0.1 m; and the thickness of half-discs from 0.012 to 0.026 m. The final result of the rational design method was the specified ranges of design parameters: diameter from 0.31 to 0.324 m; width from 0.041 to 0.0485 m; and thickness from 0.0148 to 0.0151 m. The developed method of rational design reduces the diameter ranges of the designed brake disc in comparison with the preliminary calculation by 9.5 times, while the ranges of the width of the working surfaces are reduced by 8.9 times, and the thickness range – by 46.6 times. At the final stage, the secondary design and operational parameters of the friction unit were determined: the areas of the working and non-working surfaces of the friction pairs and the coefficient of their mutual overlap. The proposed method of rational design reduces the selected range of design parameters, which will provide a more rational choice of compliance with their specified performance characteristics.

Recognition System Of The Al Qur’an Surah Al-Falaq Verse 1-5 Through Voice Using Ada-Boost

In everyday life, it is not uncommon when we hear the sound of chanting the holy verses of the Al Al Qur’an which are read in mosques before prayer time or in other conditions we seem interested in knowing what Surah and which verse is being recited. This is due to the love of Muslims themselves for the Al Qur’an but not all Muslims memorize the entire contents of the Al Qur’an . Based on the limitations and the magnitude of curiosity about Surah and Verse information, the writer is interested in developing a computer system that can recognize and provide information on the recited Surah and Verse. Advances in computer technology not only make it easier for humans to carry out activities. One of the human intelligences that are planted into computer technology is to recognize the verses of the Al Al Qur’an Surah Al-Falaq through voice. Ada-Boost method is one method to identify or recognize voice classification, and by using this method the success rate in recognizing verse numbers reaches 72%. This system can only recognize the number of verses of the Al Al Qur’an Surah Al-Falaq, recorded sound files with the .wav file extension and built using the Delphi programming language.

Contour blasting parameters by using a tunnel blast design mode

The quality of contour blasting depends on many initial blasting parameters. The parameters including blasthole diameter, rock Protodyakonov coefficient, tunnel area and distance between cracks on the tunnel face are more important. In this study, an algorithm linking between Delphi programming language and AutoCAD was created to develop a tunnel blasting model. Using this model, tunnel contour blasting passport in AutoCAD can be obtained automatically. The effects of rock Protodyakonov coefficient and cracks’ distance on blastholes number and specific charge with the variation of blasthole diameter and the semi-circular tunnel face area were investigated to yield a set of equations with the highest correlations. The results show that specific charge increases as rock Protodyakonov coefficient, cracks’ distance and drillhole diameter increase, but decreases when tunnel face area increases. In addition, the number of drillholes increases linearly as tunnel face area increases but decreases when drillhole diameter increases.

Calculation of neutron flux and neutron visualization in a spherical reactor core applying a conceptual approach and drawing a comparison with the results obtained by the CITATION code

In this research, a conceptual approach is presented to obtain the neutron flux at a reactor core. A simple spherical reactor core was analyzed by a mathematical model defined by Delphi programming language to derive the neutron flux and visualize the position of neutrons through this approach. This visualization was performed based on the Monte Carlo methods to estimate the position of neutrons. By the presented approach, the neutron flux was computed in all components, and different layers of the spherical reactor core and the traces of collided neutrons were visualized for a wide range of neutron energies as accurately as possible. Besides, this spherical reactor core was simulated by the CITATION nuclear code to obtain the neutron flux. Afterward, the results obtained by the two methods were compared, which showed that the fluxes obtained by the presented approach were in agreement with those of the CITATION code. This simulation can be generalized for every spherical nuclear reactor core having various and optional dimensions, and the neutronic calculations can be performed for it.

Black-Box Testing : Analisis Kualitas Aplikasi Source Code Bank Programming

The Source Code Bank Programming application that the researchers built uses Borland Delphi which functions to support software learning activities and as a reference for software developers, especially the Delphi programming language. In the process of developing Source Code Bank Programming is still in the prototype stage and further development is still being carried out so that it can be competitively competitive in the world. It is necessary to do various evaluations of the quality of the application in order to match the expectations of the user, one of which is to analyze the quality of the application using the Black-Box Testing method. Testing the Black-Box Source Code Bank Programming uses 3 methods, namely; 1) Graph-based testing, 2) Equivalence Partitioning, and 3) Boundary Value Analysis. The research results show that graph testing, equivalence partitioning, and boundary value analysis will be able to help the process of making test cases and make testing simpler, There are errors in testing and are included in the defect-list, the test results also show that the fulfillment of user needs for public users with a value 0.90, user registers/member with a value of 1.00, students with a value of 0.90, lecturers with a value of 0.82 and admin with a value of 0.84 are classified as good because the degree of value in each user module is greater than 0.8.

APLIKASI PENJUALAN DAN PEMBELIAN PADA APOTEK ROSA DELIMA KENDARI BERBASIS PEMROGRAMAN DELPHI 7

The purpose of this study, to design a sales information system and drug purchasing at Rosa Delima Pharmacy which is useful in managing the sales, purchasing and reporting system quickly and accurately, which is now still doing the sales, purchasing and reporting system manually, in other words still doing data processing by recording regular notes. The impact that can be felt from this designed system is the ease in managing the business of selling goods, especially for the owner of Rosa Delima Pharmacy itself, the method used in designing this system is the DFD design method, the database design method uses ER and the programming language used is the programming language Delphi. The results of this study are an Application of Sales and Purchases at Rosa Delima Pharmacy Kendari

Mathematical Simulation of Forest Fuel Element at the Crown Forest Fire Impact Taking Into Account Multiphase Reactive Media Mechanics Fundamentals

In order to predict crown forest fires, it is necessary to study the behavior of various forest fuels in a high-temperature environment. In this work, the main regularities of pyrolysis in a foliage sample of angiosperms (birch) have been studied under conditions typical for the crown forest fire. Mathematically, the pyrolysis process in the forest fuel element is described by the system of non-stationary non-linear heat conduction equations with corresponding initial and boundary conditions. The problem is solved within the framework of the two-dimensional formulation by the finite difference method. The locally one-dimensional method has been used to solve two-dimensional equations of the heat conduction. In order to solve nonlinear effects caused by the pyrolysis of forest fuel material, the simple iteration method has been used. At the interface between the subareas, the boundary conditions of the fourth kind are used. The software implementation of the mathematical model is made in the high-level programming language Delphi in the RAD Studio software. The main regularities in changes of the temperature field and the phase composition of the sample under high-temperature exposure from the forest fire are presented. The induction period of the thermal decomposition of dry organic matter in the sample has been determined. Recommendations are made about the features of accounting for the pyrolysis process when predicting forest fire danger. The research results can be used in the development and the improvement of systems for predicting forest fire danger and environmental consequences of the forest fires.