scholarly journals Methods for designing truck haulroads based on calculation of uniquely defined route

2020 ◽  
Vol 24 (5) ◽  
pp. 128-137
Author(s):  
E.V. Chirkov ◽  
◽  
A.V. Skrypnikov ◽  
V.G. Kozlov ◽  
S.Yu. Sablin ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Computer Aided Design ◽  
Information Technologies ◽  
Large Scale ◽  
Design Stage ◽  
Natural Conditions ◽  
Modern Information ◽  
Logging Roads ◽  
Aided Design ◽  
Technical And Economic Indicators

Currently, in Russia and abroad, many works are devoted to the study of design methods in the plan. Proposed several methods for alignment design of forest roads using information technologies, different objectives, ways of their solution, the nature of the geometric representation of the route and other features. The article discusses the main methods of designing logging roads based on the calculation of a uniquely defined route, which allows us to conclude that tracing is the most important stage of design and survey work, since it is the position of the route that determines the main technical and economic indicators of the projected road. This makes it necessary and expedient to conduct research and improve the technology and methods of computer-aided design of the route of logging roads using modern information technologies based on materials obtained from unmanned aerial vehicles or large-scale topographic plans in coordinates. Also, tracing methods should be linked to the accepted design technology. In turn, the choice of method and technology may depend on the specific features of the projected object: natural conditions, design stage, availability of topographic materials, etc.

scholarly journals SIMULATION OF PROGRAMMABLE SINGLE-ELECTRON NANOCIRCUITS

2021 ◽  
pp. 64-68
Author(s):  
Oleksandr Melnyk ◽  
Viktoriia Kozarevych
Keyword(s):  
Integrated Circuits ◽  
Computer Aided Design ◽  
Large Scale ◽  
Theory And Practice ◽  
Single Electron ◽  
Computer Hardware ◽  
Design Stage ◽  
Nanoelectronic Devices ◽  
Computer Aided ◽  
Aided Design

The speed and specializations of large-scale integrated circuits always contradict their versatility, which expands their range and causes the rise in price of electronic devices. It is possible to eliminate the contradictions between universality and specialization by developing programmable nanoelectronic devices, the algorithms of which are changed at the request of computer hardware developers, i.e. by creating arithmetic circuits with programmable characteristics. The development of issues of theory and practice of the majority principle is now an urgent problem, since the nanoelectronic execution of computer systems with programmable structures will significantly reduce their cost and significantly simplify the design stage of automated systems. Today there is an important problem of developing principles for building reliable computer equipment. The use of mathematical and circuit modeling along with computer-aided design systems (CAD) can significantly increase the reliability of the designed devices. The authors prove the advantages of creating programmable nanodevices to overcome the physical limitations of micro-rominiatization. This continuity contributes to the accelerated introduction of mathematical modeling based on programmable nanoelectronics devices. The simulation and computer-aided design of reliable programmable nanoelectronic devices based on the technology of quantum automata is described. While constructing single-electron nanocircuits of combinational and sequential types the theory of majority logic is used. The order of construction and programming of various types of arithmetic-logic units is analyzed.

Integration Infrastructure for a Simulation-Based Design Environment

1995 ◽  
Author(s):  
Chung-Shin Tsai ◽  
Kuang-Hua Chang ◽  
Jia-Yi Wang
Keyword(s):  
Mechanical System ◽  
Computer Aided Design ◽  
Large Scale ◽  
Product Development Process ◽  
Design Stage ◽  
Simulation Based Design ◽  
Simulation Based ◽  
Computer Aided ◽  
Aided Design ◽  
Functional Components

Abstract In this paper, the integration infrastructure for a simulation-based design (SBD) environment for mechanical system design developed at Center for Computer-Aided Design at the University of Iowa is presented. The SBD environment comprises the integration infrastructure and workspaces/tools that exploit Computer Aided Design (CAD)/Computer Aided Engineering (CAE) and software engineering technologies in support of design of large scale mechanical systems. The principal functional components of the SBD environment are engineering workspaces and CAD/CAE tools that bring engineers, servicemen, and customers early in the product development process to assess design of the product concurrently. The infrastructure is based on the newly invented engineering views that allow engineers from various disciplines to view the product with their own perspectives. The infrastructure allows engineers to create CAD and simulation models of the mechanical system, access engineering workspaces and CAD/CAE tools to perform multidisciplinary engineering analyses, use planning tools to create and manage simulation processes, communicate and exchange engineering data, and conduct design trade-off analyses and make informed decisions to yield a robust optimum design. The presentation given in this paper assumes that simulation-based design activities are performed in the product detailed design stage. The environment is being extended to support concept design.

scholarly journals Computer-aided design of multi-purpose steel headframes for mines with a new technical level

2020 ◽  
Vol 174 ◽  
pp. 01048
Author(s):  
Elena Kassikhina ◽  
Vladimir Pershin ◽  
Nina Rusakova
Keyword(s):  
Cross Sections ◽  
Computer Aided Design ◽  
Information Technologies ◽  
Three Dimensional ◽  
Numerical Control ◽  
Technical Level ◽  
Resource Saving ◽  
Existing Structures ◽  
Set Up ◽  
Aided Design

The existing structures of the steel sinking headgear and permanent headframe do not meet the requirements of resource saving (metal consumption and manpower input at installation), and the present methods of the headframe designing do not fully reflect recent possibilities of applying of the advanced information technologies. Technical level of the modern software makes it possible for designers to set up multiple numerical experiments to create a computer simulation that allows solving the problem without field and laboratory experiments, and therefore without special costs. In this regard, a mathematical simulation has been developed and based on it, software to select cross-sections of multi- purpose steel headframe elements and to calculate proper weight of its metal structures depending on the characteristics and hoisting equipment. A headframe drawing is displayed, as the results of the software work, including list of elements, obtained optimal hoisting equipment in accordance with the initial data. The software allows speeding up graphic work and reducing manpower input on calculations and paper work. The software allows developing a three-dimensional image of the structure and its functional blocks, based on the obtained initial parameters, as well as developing control software for units with numerical control (NC) in order to manufacture multi-purpose headframes.

Highways Design Taking into Account Climatic Features in the Route Area

2021 ◽  
pp. 125-136
Author(s):  
Т. В. Самодурова ◽  
Н. Ю. Алимова ◽  
О. А. Волокитина ◽  
О. В. Гладышева
Keyword(s):  
Bearing Capacity ◽  
Computer Aided Design ◽  
Systematic Approach ◽  
Weather Conditions ◽  
Design Stage ◽  
Design System ◽  
Computer Aided ◽  
Calculation Methodology ◽  
Aided Design ◽  
Climatic Features

Постановка задачи. Для получения оптимальных проектных решений, удовлетворяющих условиям безопасности движения в сложных погодных условиях, необходимо сравнение вариантов автомобильных дорог по условиям снегонезаносимости. Такие расчеты должны стать составной частью системы автоматизированного проектирования САПР-АД. Результаты. Предложен системный поход к решению задачи, определен перечень информации, необходимой для проведения расчетов. Выполнен анализ результатов исследований по снегозаносимости дорог, проводимых в России и за рубежом. Предложены расчетные схемы и модели для оценки вариантов продольного профиля и земляного полотна автомобильной дороги по снегозаносимости. Предложены решения для оценки вариантов плана трассы с использованием карт с расчетными параметрами метелей. Выводы. Реализация предложенной методики проведения расчетов позволит на стадии проектирования оценить варианты автомобильной дороги по условиям снегозаносимости. Statement of the problem. In order to obtain optimal design solutions that meet the conditions of safety traffic in difficult weather conditions, it is necessary to compare the options of highways according to the snow tolerance conditions. Such calculations should become an integral part of the CAD-AD computer-aided design system. Results. A systematic approach to solving the problem is set forth, a list of information necessary for calculations is identified. The results analysis of studies on the snow-bearing capacity of roads conducted in Russia and abroad is carried out. Calculation schemes and models are suggested to evaluate options for the longitudinal profile and the roadbed for the snow-bearing capacity. Solutions for evaluating variants of the route plan using maps with calculated parameters of snowstorms are proposed. Conclusions. The implementation of the proposed calculation methodology will make it possible at the design stage to evaluate the options of the highway according to the conditions of the snow-bearing capacity.

scholarly journals Analog Circuit Design Automation Tool Using Genetic Algorithms

1970 ◽  
Vol 1 (1) ◽  
Author(s):  
Y. M. A. Khalifa ◽  
D. H. Horrocks
Keyword(s):  
Genetic Algorithms ◽  
Circuit Design ◽  
Analog Circuits ◽  
Computer Aided Design ◽  
Degrees Of Freedom ◽  
Analog Circuit ◽  
Search Space ◽  
Design Stage ◽  
Specific Frequency ◽  
Aided Design

An investigation into the application of Genetic Algorithms (GA) for the design of electronic analog circuits is presented in this paper. In this paper an investigation of the use of genetic algorithms into the problem of analog circuits design is presented. In a single design stage, circuits are produced that satisfy specific frequency response specifications using circuit structures that are unrestricted and with component values that are chosen from a set of preferred values. The extra degrees of freedom resulting from unbounded circuit structures create a huge search space. It is shown in this paper that Genetic Algorithms can be successfully used to search this space. The application chosen is a LC all pass ladder filter circuit design.Key Words: Computer-Aided Design, Analog Circuits, Artificial Intelligence.

scholarly journals COMPLEX USAGE OF 4D INFORMATION MODELLING CONCEPT FOR BUILDING DESIGN, ESTIMATION, SHEDULING AND DETERMINATION OF EFFECTIVE VARIANT

2006 ◽  
Vol 12 (2) ◽  
pp. 91-98 ◽  
Author(s):  
Vladimir Popov ◽  
Saulius Mikalauskas ◽  
Darius Migilinskas ◽  
Povilas Vainiūnas
Keyword(s):  
Computer Aided Design ◽  
Information Technologies ◽  
Investment Project ◽  
Building Design ◽  
Product Lifecycle Management ◽  
Information Modeling ◽  
Information Modelling ◽  
Computer Aided ◽  
Aided Design

With the growth of information technologies in the field of construction industry, the concept of CAD (Computer Aided Design), which denotes just design operations using a computer acquires a new meaning and changes the contents lightening design process based on product modelling and further numerical simulation construction process and facility managing. New definitions as Building Information Modelling (BIM) and Product Lifecycle Management (PLM) are more and more usable as the definition of a new way approaching the design and documentation managing of building projects. The presented computer aided design technology based on the concept of graphical ‐ information modeling of a building, is combined with resource demand calculations, comparison of alternatives and determination of duration of all the stages of investment project life. The software based on this combined 4D PLM model is to be created as a means to manage effectively the investment project, starting from planning, designing, economical calculations, construction and afterwards to manage the finished building and to utilize it.

Supporting Fine-Grained Concurrent Tasks and Personal Workspaces for a Hybrid Concurrency Control Mechanism in a Networked Virtual Environment

2012 ◽  
Vol 21 (4) ◽  
pp. 452-469 ◽  
Author(s):  
Jun Lee ◽  
Mingyu Lim ◽  
HyungSeok Kim ◽  
Jee‐In Kim
Keyword(s):  
Virtual Environment ◽  
Concurrency Control ◽  
Computer Aided Design ◽  
Large Scale ◽  
Control Mechanism ◽  
Control Approach ◽  
Fine Grained ◽  
Locking Mechanism ◽  
Networked Virtual Environment ◽  
Aided Design

A concurrency control mechanism for a networked virtual environment is a key element in many collaborative computer-aided design applications. However, conventional object-based locking mechanisms restrict the behaviors of nonowners, and an attribute-based locking mechanism may produce another problem called task-surprise, which disturbs users' collaboration. In this paper, we propose a hybrid concurrency control mechanism that reduces restrictions of nonowners' behaviors and task-surprises in a networked virtual environment. The proposed method consists of two concurrency control approaches: task-based concurrency control and personal workspaces. The task-based concurrency control approach allows nonowners to do some tasks if they do not conflict with the tasks of the owner of the shared object. The personal workspaces approach provides an independent workspace where a user can manipulate copies of the shared objects. The proposed method was applied to a collaborative level design for a large-scale online game as a case study. We evaluated its performance by experiments and user studies to check acceptance and usability of the proposed method.

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