scholarly journals Evolución de la población de México, 1980-2005, conforme a la hipótesis de una tasa de crecimiento demográfico logística / Evolution of the Population of Mexico, 1980-2005, under the Hypothesis of a Logistic Demographic Growth Rate

2008 ◽  
Vol 23 (3) ◽  
pp. 455
Author(s):  
Manuel Ordorica

En la investigación en demografía se ha desarrollado un gran número de funciones matemáticas con el fin de representar la evolución de la población, entre las que sobresalen la exponencial y la logística. Sin embargo ninguna de estas funciones se ajusta fielmente a la realidad debido a que las hipótesis que subyacen a tales representaciones matemáticas no describen la dinámica de la población. El objetivo del presente trabajo es construir una función matemática que se aproxime a la descripción de la dinámica de la población total de México entre 1980 y 2005, al tiempo que reproduzca en forma adecuada la trayectoria de la tasa de crecimiento de la población observada en el periodo señalado. Asimismo se realiza un pronóstico de la población a partir de la función matemática encontrada. También se realiza la proyección de la población de un municipio con pocos habitantes, a fin de probar la fórmula en este estudio de caso y comparar sus resultados con los de otros métodos de pronóstico. AbstractIn demographic research, several mathematical functions have been developed to represent the evolution of the population, including the exponential and logistic function. None of these functions fits reality perfectly, however, since the hypotheses underlying these mathematical representations fail to describe population dynamics. The aim of this study is to construct a mathematical function that approaches the description of the dynamics of the total population of Mexico between 1980 and 2005, while accurately reproducing the path of the population growth rate observed during this period. It therefore carries out a forecast of the population on the basis of the mathematical function found. It also carried out a forecast of the population in a municipality with very few inhabitants, in order to test the formula in this case study and compare its results with those of other forecasting methods.

2005 ◽  
Vol 2 (10) ◽  
pp. 10-12 ◽  
Author(s):  
Majid Sadeghi ◽  
Gholamreza Mirsepassi

The Islamic Republic of Iran is located in the Middle East between the Caspian Sea and the Persian Gulf. Iran's total land area is 1 648 000 km2. Its total population in 2003 was about 68 920 000 (UNICEF, 2003). The population growth rate is 1.41%. Of the total population, 60.4% live in urban and 39.6% in rural areas (Yasamy et al, 2001).


2006 ◽  
Vol 3 (3) ◽  
pp. 16-18 ◽  
Author(s):  
M. Rezaul Karim ◽  
Fakhruzzaman Shaheed ◽  
Siddhartha Paul

The People's Republic of Bangladesh is located in South Asia. The total land area of Bangladesh is 147570 km2. Its total population in 2001 was about 123 million. The population growth rate is 1.47%; of the total population, 75% live in rural areas and 25% in urban areas (Bangladesh Bureau of Statistics, 2000).


2004 ◽  
Vol 73 (4) ◽  
pp. 777-788 ◽  
Author(s):  
J. M. Reid ◽  
E. M. Bignal ◽  
S. Bignal ◽  
D. I. McCracken ◽  
P. Monaghan

2017 ◽  
Author(s):  
Lakshmi Seewsagur

This layer shows the demographic growth rate between 1992 and 2015, and provides baseline information for the analysis of the evolution of "Millenium Development Goal (MDG) 7: Ensure environmental sustainability" water-related targets. Population


2019 ◽  
Vol 27 (2) ◽  
pp. 19-33
Author(s):  
Mansoor Raza

The population growth rate of Karachi is way beyond average national growth rate. Keeping aside the reasons for this extravagant growth, the phenomenon puts high demand on all aspects of civic life, and housing is no exception. The supply for housing for poor is not coming from formal sectors, which results in the creation of squatter settlements. Some of the theorists view these squatters as an indicator of poor’s desire for self improvement. The informality in Karachi is tacitly promoted by state institutions to value-tag land for future formal commercial enterprises. The resulting uncertainty is an impediment to the freedom of poor and hence human development. This paper documents and analyses the land use of Karachi, from the perspective of housing in an informal settlement, by taking Machar Colony as a case study. Literature review, stakeholders’ interviews, on-site observations and pictorial documentation are the prime characteristics of the research methodology. Keyword: Informality, housing, fear, freedom, commodification, Karachi, Machar Colony


2008 ◽  
Vol 19 (02) ◽  
pp. 237-247 ◽  
Author(s):  
DAMIÁN H. ZANETTE

It is argued that the present log-normal distribution of language sizes is, to a large extent, a consequence of demographic dynamics within the population of speakers of each language. A two-parameter stochastic multiplicative process is proposed as a model for the population dynamics of individual languages, and applied over a period spanning the last ten centuries. The model disregards language birth and death. A straightforward fitting of the two parameters, which statistically characterize the population growth rate, predicts a distribution of language sizes in excellent agreement with empirical data. Numerical simulations, and the study of the size distribution within language families, validate the assumptions at the basis of the model.


2021 ◽  
Author(s):  
Alemayehu Temesgen Befikadu ◽  
Berhanu Alemu Tafa

Abstract ObjectiveThe study examines An Empirical Analysis of the Effects of Population Growth on Economic Growth in Ethiopia using an Auto Regressive Distributive Lag (ARDL) Model Approach from the period of 1980 through 2019 with specific focus on total population, Growth Domestic Product, population growth rate, and foreign direct investment, inflow. This study investigated to understand the effects of total population on economic growth, and to analyze the short run and long run relationship of economic growth with respect to population growth.ResultsFrom the results of the study, personal remittance is stationary at level, while total population, FDI net inflows, population growth rate, rate of inflation, and gross capital formation are stationary at first difference. From the finding of long run equilibrium relationships between RGDP, population number, FDI, personal remittance, population growth rate, rate of inflation and GCF is existed since the value of F-statics is greater than the upper boundary line. Finally, to increase the economic growth of Ethiopia; the government should adopt policies that can attract the foreign investors. The government also should put a standard to guarantee that the economy grows at a larger rate than the population growth.


2019 ◽  
Vol 5 (2) ◽  
pp. 106-111
Author(s):  
Reni Astikandi ◽  
Dining Aidil Candri ◽  
Hilman Ahyadi ◽  
Mursal Ghazali

Mollusca are one of the fouling (biofouling) organisms attaching to hard objects in the sea and freshwater waters. The attachment and growth of fouling organisms is a serious problem because it is one of the factors that can damage the structure of building materials and has a considerable impact on the development of the marine industry. This study aimed to determine the effect of distinction of natural media placed in three ecosystems towards species diversity and growth rates of mollusca. The observation of attachment conditions and growth of the mollusca populations in each media were documented by using an underwater camera. Based on the results of research and identification, the researcher found that there were 5 species from 2 classes namely Gastropoda and Bivalvia and 2 family named Vermetidae and Ostreidae. The attached species of Gastropoda class was only Petaloconchus varians, while species of Bivalvia class were Planostrea pestigris, Alectryonella plicatula, Ostrea edulis and Crassostrea gigas. The most abundant species were found in tile media with an abundance of 1,014 individuals / cm2. While the lowest abundance of individuals was found in stone media which was equal to 0.141 individuals/cm2. The species with the highest population growth rate was the species of Petaloconchus varians with a total population growth rate of 11.66 ind/ week. While species with the lowest population growth rate was found in Alectryonella plicatula species with a total population growth rate of 0.16 ind/ week.


ASTONJADRO ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 183
Author(s):  
Ayu Lestari ◽  
Tedy Murtejo ◽  
Nurul Chayati

<p>Tangerang Regency is an area located in Tatar Pasundan, Banten Province, Indonesia. This area is located 30 km west of Jakarta and 90 km southeast of Serang. With an annual population growth rate of ± 2.15 percent, the total population of Tangerang Regency in 2020 is ± 2,838,621 according to the Central Statistics Agency (BPS) of South Tangerang Regency. South Tangerang Regency which has an area of 959.6 kilometers. This research was conducted to determine the feasibility level of the Park and Ride development plan in Tangerang Regency. Traffic counting surveys and interviews were carried out on main road sections which were then processed using Microsoft Excel to determine the parking accumulation until the fluctuation of motorbikes and cars was known. Furthermore, the interview data is processed to determine the amount of public interest in the development of Park and Ride which is reviewed based on gender, age, trip duration, trip intent, parking duration, monthly fuel expenditures, desired parking rates and those who agree to use Park and Ride when the survey was conducted. at 06.00-21.00 WIB on the road in the Cisauk Station area. From the results of processing this data using Microsoft Excel, it was found that the characteristics of Park and Ride facilities users and also the number of users of Park and Ride facilities for motorbikes were 2349, while for cars of 272 with a plan age until 2021, this proves there is a need for increased interest in motorbikes. Park and Ride development at Cisauk Station, Tangerang Regency.</p>


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