scholarly journals Method of Restrictions in the Multicriteria Task of Allocation of Flows

2021 ◽  
Vol 7 (2) ◽  
pp. 37-43
Author(s):  
S. Kowalski ◽  
O. Titova ◽  
I. Staкheev ◽  
N. Fokin
Keyword(s):  
Communication Network ◽  
Carrying Capacity ◽  
Final Stage ◽  
Multicriteria Optimization ◽  
New Approach ◽  
Criterion Functions

In article the new approach to the decision of the multicriteria task of formation of resources of a transport communication network based on a combination of one of methods of multicriteria optimization ‒ a method of restrictions and a simplex a method is offered. The task is decomposed also dares stage by stage. At the first stage the set of ways of an admissible rank is formed. On the second calculation structural reliabilities of the set of ways generated at the first stage is produced. At the final stage the choice optimal on the criterion functions characterizing cost and carrying capacity, set of ways of transportation of flows corresponding pairs of nodes which is reduced to the decision of the multicriteria task of formation of resources of a transport communication network by a method of restrictions is carried out.

Global Environmental Issue and Sustainable Development

2019 ◽  
Vol 2019 (4) ◽  
pp. 8-23
Author(s):  
Viktor Danilov-Danilyan
Keyword(s):  
Sustainable Development ◽  
Carrying Capacity ◽  
Consumer Society ◽  
Anthropogenic Pressure ◽  
New Approach ◽  
One Dimensional ◽  
Global Environmental Issue ◽  
Mass Consciousness ◽  
Global Environmental ◽  
Definition Of

The problem of increasing anthropogenic pressure on the biosphere is considered in the framework of ideas about the carrying capacity of the ecosystem. The possibility of giving an exact definition of the carrying capacity is discussed, the concept of its one-dimensional projection is introduced, and examples of one-dimensional projections are given. In relation to the biosphere, they relate, in particular, to the limits of growth. The traditional definition of the concept “sustainable development” is criticized, this definition is associated with the ideology of the consumer society. The features of the perception of environmental issues by the mass consciousness in a consumer society are described. Extensions of the notion “environment” and a new approach to the interpretation of the notion “sustainable development” due to this expansion are considered.

scholarly journals Trialling the Use of Google Apps Together with Online Marking to Enhance Collaborative Learning and Provide Effective Feedback

F1000Research ◽  
2015 ◽  
Vol 4 ◽  
pp. 177
Author(s):  
Nicky J. D. Slee ◽  
Marty H. Jacobs
Keyword(s):  
Group Work ◽  
Final Stage ◽  
Peer Assessment ◽  
Collaborative Work ◽  
Data Set ◽  
New Approach ◽  
Effective Feedback ◽  
Data Collection Process ◽  
Complete Set ◽  
Google Drive

This paper describes a new approach to an ecology practical where the cohort was divided into four groups to collect data. Each group studied a different habitat; the cohort was further subdivided into seven groups to collect field data. Each of the four groups collaborated through Google Drive on descriptions and images of the habitat site, and also collaborated at the subgroup level on their own habitat data. The four groups then shared habitat descriptions with the aim to provide enough information to enable everyone to understand entire data set. Group work was assessed online and feedback was given at both the group and subgroup levels. At the end of the first stage, peer assignment of all the work was carried out on an individual basis to engage students in other habitats. A complete set of data was finally provided to all students, so that individuals could carry out their own analysis of all four habitats; work was again assessed online and feedback given to each individual. The three-stage assignment from group work to peer assessment to individual analysis was a success. The collaborative work through Google Drive enabled students to produce high quality documents that were valuable for the next step. The peer assignment enabled students to gain information on expected Minimum Standards and exposed them to a variety of habitats. The final stage was open ended and challenged students. This approach is recommended but the data collection process needs modification, and students need more guidance when completing the final stage of the assignment.

scholarly journals A Multipurpose Image Processing Technique for Wireless and Wired Networks

2012 ◽  
pp. 205-209
Author(s):  
Akash Kumar Bhoi ◽  
Baidyanath Panda
Keyword(s):  
Image Processing ◽  
Communication Network ◽  
Processing Technique ◽  
Image Processing Technique ◽  
Single Server ◽  
Receiver Side ◽  
High Quality ◽  
New Approach ◽  
Wired Networks ◽  
Prime Problem

One of the most important and challenging goal of current and future communication network is transmission of high quality images from sender to receiver side quickly with least error where limitation of bandwidth is a prime problem. Here we will discuss a new approach towards compressing and decompressing with perfect accuracy for its suitable transmission and reception. This technology is also helpful in Server and Client models used in industries where a large number of clients work over a single Server. Hence to minimize the load during transmission of a volumetric image/video this process can be implemented.

An approach to concurrent engineering

1998 ◽  
Vol 212 (1) ◽  
pp. 13-27 ◽  
Author(s):  
D T Pham ◽  
S S Dimov
Keyword(s):  
Carrying Capacity ◽  
Concurrent Engineering ◽  
Deductive Reasoning ◽  
Design Models ◽  
New Approach ◽  
Wide Range ◽  
Manufacturing Information ◽  
Form Features ◽  
The Given ◽  
Natural Way

This paper presents a new approach to concurrent engineering, focusing on simultaneous product design and process planning. The key elements in this approach are (a) a framework for structuring manufacturing information and maximizing the information-carrying capacity of the design models, (b) a procedure for intelligently mapping form features on to pertinent manufacturing considerations and (c) a procedure for utilizing the available manufacturing information about components already machined within the given manufacturing environment. The proposed approach provides a natural way for conveying manufacturing information to the designer. Its distinguishing feature is the application of a wide range of artificial intelligence techniques for knowledge acquisition and deductive reasoning.

A New Approach to Calculate District Carrying Capacity

2002 ◽  
Author(s):  
Yuguang Wei ◽  
Hao Yang ◽  
Jianjun Liu ◽  
Ligang Tan
Keyword(s):  
Carrying Capacity ◽  
New Approach

New approach to steroidal hemisuccinates and glycosides

1987 ◽  
Vol 52 (3) ◽  
pp. 775-787 ◽  
Author(s):  
Vladimír Pouzar ◽  
Ivan Černý ◽  
Pavel Drašar ◽  
Miroslav Havel
Keyword(s):  
Final Stage ◽  
Side Chain ◽  
Unsaturated Ester ◽  
New Approach ◽  
Ester Grouping ◽  
Primary Hydroxyl ◽  
New Synthesis

New synthesis of hemisuccinate and β-D-glucopyranoside of (20E)-21-ethoxycarbonyl-5,20-pregnadien-3β-ol (XVIII and XXVI) is described, consisting in the preparation of a protected hemisuccinate (XV) or glucoside (XXIII) intermediate, into which the unsaturated ester grouping in the side-chain is incorporated only in the final stage of the synthesis. The primary hydroxyl at C(20) was protected by tert-butyldimethylsilyl, trityl or nitrate groups, the succinate was blocked with 2-(trimethylsilyl)ethyl or 2,2,2-trichloroethyl groups and the glucosides were used in the form of peracetyl derivatives.

scholarly journals Relationship between the Paradox of Enrichment and the Dynamics of Persistence and Extinction in Prey-Predator Systems

Symmetry ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 532
Author(s):  
Jawdat Alebraheem
Keyword(s):  
Numerical Simulations ◽  
Carrying Capacity ◽  
Analytical Techniques ◽  
Type I ◽  
Type Ii ◽  
New Approach ◽  
Predator Prey ◽  
Paradox Of Enrichment ◽  
The One ◽  
Predator System

The paradox of the enrichment phenomenon, considered one of the main counterintuitive observations in ecology, likely destabilizes predator–prey dynamics by increasing the nutrition of the prey. We use two systems to study the occurrence of the paradox of enrichment: The prey–predator system and the one prey, two predators system, with Holling type I and type II functional and numerical responses. We introduce a new approach that involves the connection between the occurrence of the enrichment paradox and persistence and extinction dynamics. We apply two main analytical techniques to study the persistence and extinction dynamics of two and three trophics, respectively. The linearity and nonlinearity of functional and numerical responses plays important roles in the occurrence of the paradox of enrichment. We derive the persistence and extinction conditions through the carrying capacity parameter, and perform some numerical simulations to demonstrate the effects of the paradox of enrichment when increasing carrying capacity.

scholarly journals Multicriteria task of distribution of flows of a transport communication network

2019 ◽  
pp. 64-69
Author(s):  
N. I. Fokin
Keyword(s):  
Mathematical Model ◽  
Communication Network ◽  
Information Flow ◽  
Structural Reliability ◽  
Flow Distribution ◽  
Information Flows ◽  
Mathematical Apparatus ◽  
New Approach ◽  
Second Stage ◽  
Three Stages

The paper proposes a new approach to solving the problem of distribution of information flows on the communication network based on the method of constraints. A multi-pole multi-product graph is used as a mathematical model of the communication network structure. The problem of distribution of information flows is solved in three stages. At the first stage, the structural analysis of the network is carried out using the mathematical apparatus of Boolean algebra. As a result, we get a lot of ways to distribute information flows. At the second stage, the structural reliability of the found set of information flow distribution paths is calculated using the orthogonalization algorithm. At the final stage, using the method of constraints, a compromise version of the distribution of information flows of corresponding pairs of nodes is found.

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