According to the article's analysis, birth control is closely related to political system and plural social structure in a country and, especially, is affected by such factors as those of religious, ethnic, caste and economic differences.
Based on the reviewing of China′s demographic transition since the last half of 20 century, this paper analyzes the formation and development of birth control policy.
In the frame of theory on modern population development, it is necessary to realize socialization of population control as a result of choice of population controlling mode. To carry out this controlling mode, we must change correct social birth ethic into ideas on birth and reproductive desires of people.
Based on a dual economies analysis framework and a correctional Henry George Model,this paper discusses the urban population controlling policies which carried out by a development-oriented government.
The equilibrium principle,which requiring groups and biomass to keep balance with environment capacity,and the necessity and the demolishment to carry out the equilibrium principle provide the need to control population.
With the background of environment capacity's space-time restriction,the inter-association among biomass,shape(quality)and longevity,and the existing of human being, which exist as an"ecology contradiction",manifest the pressure to control population;
On the basis of the comparison,this paper argues that only when marketing economy combines with urbanization and modernization,it can effectively control population.
So we must control population growth,save and value all the resources,exploit and use marine resources and renewable sources energy,stick to the principle of putting prevention first and providing prevention and curing,protect and improve our ecological environment,advance sustainable development of population,resources,environment,economy and society.
The method used to detect a variation in BAIB excretion is relatively inexpensive, simple, and suitable for mass screening of patients and healthy individuals (population control).
The population density of these animals has been found to vary within the urban area, depending mainly on the availability of secluded areas to live in and on population control by municipal services.
grantiana as both a green manure and natural alternative to synthetic chemicals in nematode population control, especially in integrated pest management for vegetable crops in organic agriculture of tropical and temperate areas.
The lesbians reported more breast biopsies and had a higher body mass index; the heterosexuals had higher rates of current smoking, pregnancy, children, miscarriages, abortions, and use of birth control pills.
It was established that the representatives of the larch fluoride population exceeded those of the control population in the content of these FAs in the total lipid fraction (8.1 and 6.7%, respectively).
Fluctuating asymmetry (FA) in eight cranial measurements was studied in Microtus rossiaemeridionalis voles from two sites of the zone affected by the Totsk Radioactive Trace (TRT) and in the control population.
The histocompatibility pattern of 160 patients with multiple sclerosis (MS) living in the epidemiological area of Southern Lower Saxony was determined and compared to a control population.
The HLA antigen frequencies of the total MS patient population, and of MS type I and MS type II patients were compared to those of a normal control population and each other.
An immunoprecipitation assay was used to measure ω-conotoxin MVIIC (P/Q-type) binding and blocking calcium channel antibodies in 67 patients with Lambert-Eaton myasthenic syndrome (LEMS) and in a large control population.
人口控制
population control
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