Papers by Keyword: Population

Abstract: In this paper, we consider a computational algorithm that allows us to follow specific sequences in order to meet the needs of the population in a residential area. As an integral indicator, the degree of satisfaction of the needs of the population is used, which characterizes the actual level of consumption of any services in comparison with the norm of their rational consumption. The theoretical premise of the study was the fundamental principle of urban development of a favorable environment for human development. The methodological basis of the study was a vector representation of the state of the system.

Abstract: On the basis of results of natural-technical system’s researches «Natural Environment - Object of Activity – Population» on the use of water resources, the predominating integrity role as the dominant principle of functioning of this class of systems is determined.

Abstract: The environment we live in is very fragile and has a delicate balance. In the current era, the human kind is consuming the natural resources at a higher rate than it can produce it and is generating wastes at a higher rate than the environment can remove it. Because of anthropocentric ideology, human race believes in development through destruction. The urge for luxury and sophistication has given an impetus to industrial revolution and technological development. This has lead to exponential consumption of resources of the world. To worsen this scenario, the world has undergone huge population explosion in the 19^th century. This has increased pressure on all available resources. Hence, in order to meet the current demands, people started using unsustainable technologies leading to huge pollution in all sectors. In this paper, the adverse effect of population growth in India on various factors like water pollution, emissions of CO₂ and green house gases are discussed. The data for analysis are based on the statistics of United Nations Population Division, The WorldBank data bank and Central Pollution Control Board of India.

Abstract: This paper aims to discuss what is the suitable scale of the specialized residential area for aged people. We used the method of combining the qualitative analysis and quantitative analysis, carded and compared the dates of the cognition and communication for the aged people, the walking range for the aged people, the walking range for pension service facilities, property management and relevant standards one by one, got the reasonable scale from two terms that is population scale and land scale. The optimum scale of the specialized residential area for aged people is population scale between 1000 to 2500 people and land area between 4.96 to 12.65 hectares. This data will play a guiding role for the construction and design of the specialized residential area for aged people in the future, and also will provide a reference for the planning and design of old settlements in urban planning.

Abstract: The main aim of the paper lies in providing a proposal of technical system optimization in terms of maximizing its reliability when a certain sum of maintenance costs is given, or minimizing maintenance costs to achieve the defined reliability. The technical system is analyzed using the method called fault tree analysis (FTA) and the final diagram is represented by a tree structure. At the top of the diagram, there is an undesired event which represents the system failure. This top event is analyzed and branched into several other events in order to obtain all possible faults of system elements and their combinations which lead to the system failure. Each primary event contains basic information as minimal and maximal reliability and the corresponding maintenance costs. As a result, it is possible to calculate the total probability of system failure, respectively to its reliability, and the total costs needed to ensure the required system reliability. Genetic algorithms are used and applied in the diagram created by FTA. The paper contains the whole proposal of using a genetic algorithm in order to optimize costs and system reliability on the basis of defined conditions. The described proposal is implemented within a functional application and then tested using real data. The results form an integral part of this paper.

Abstract: In this document we analysis the lead contamination in tree ring of Platycladus orientalis and Poplar, and found that lead concentrations in contaminated tree rings has a good relationship with industrial dust emissions and automobiles, the lead contamination in tree ring can reconstruction the lead contamination history of Jinan. The case study in Jinan, showed that trees can provide continuous monitoring data for assessment of trace metal pollution in the future.

Abstract: GA (Genetic algorithm) is an optimization method based on operators (mutation and crossover) utilizing a survival of the fittest idea. They are utilized favorably in various problems. (TSP) Travelling salesman problem is one of the famous studied. TSP is a permutation problem in which the aim is to determine the shortest tour between n different points (cities), otherwise, the problem aims to find a route covering all cities where that the total distance is minimal. In this study a single salesman travels to each of the cities and close the loop by returning to the city he started, the aim of this study is to determine the minimum number of generations in which salesman does the minimum path, cities are chosen at random as initial population. The new generations are then created iteratively till the proper path is attained.

Abstract: The population size and structure is an important factor that affects economic and social development. In this thesis, MATLAB is used to build the relational graph between total population and year according to the total population in the statistical bulletin issued by Jilin Province Statistical Bureau; the grey GM (1,1) model is built with the population size between 2004 and 2013 as the original sequence; the statistical software SPSS18.0 is also used to solve grey GM(1,1) model and it is obtained that the total population in Jilin Province will grow slowly in the future ten years; finally, the rationalization proposal for controlling the population increase of Jilin Province is put forward.

Abstract: The full carbon emission is calculated by using the solar emergy as a dimension normalizing tool in this paper. Its accounts include energy consumption carbon emission, potential carbon consumption of biomass resource consumption, and potential carbon consumption of waste emission. Based on it, population carrying capacity of unit carbon emission and economic output of unit carbon emission are taken into comprehensive account to establish the carbon emission performance comprehensive indexes. Taking China’s 30 provinces as examples, the assessment results show that the Nationwide should coordinate the relationship among economic, population and carbon emission. Compared with the traditional carbon efficiency evaluation, the carbon comprehensive performance evaluation based on “full carbon emission calculation” can fairly and objectively reflect the effects from modes of both life and production on carbon emission.

Abstract: We propose a scheme for creating coherent atomic superposition states via the technique of stimulated Raman adiabatic passage (STIRAP) in a Λ-type system where final states are composed of manifold of levels and the intermediate levels could be more than one level. If the pump pulses and Stokes pulses are kept in the same order of ordinary STIRAP, through the control the delay time between the Stokes pulses and pump pulse, we could create arbitrary superposition states in the manifold of levels.