scholarly journals DAMPAK KEPENDUDUKAN TERHADAP PEMUKIMAN

Populasi ◽  
2016 ◽  
Vol 2 (2) ◽  
Author(s):  
Muhadjir Darwin
Keyword(s):  
Growth Rate ◽  
Population Growth ◽  
Population Growth Rate ◽  
Economic Condition ◽  
Housing Stock ◽  
High Rate ◽  
Household Members ◽  
The Difference ◽  
The Relationship ◽  
Human Problem

Housing and its sanitation has been widely recognized as a global human problem. Apart of the sources of problem is population, i.e high rate of population growth and over urbanization. Using the Indonesian case, this paper discusses the relationship between population and housing. The population growth rate of Indonesia declined from 2.3 annually during the decade of 1971- 1980 to 1.97 annually during the next decade. However, the average number of household members declined from 4.9 to 4.5 during the same period. As a result, the number of households increased substantially than the number of population. This phenomenon will affect the increase of the need of housing. In the meantime, the economic condition of Indonesian households could not compete with the soaring prices of housing. In addition, government capabilities to provide housing for the society are still very limited. The data available shows the evidence onthe scarcity of housing,where the number of housing stock is smaller than the number of households. However, The number of housing stock has increased substantially, whereas the difference between the number of households and the number of housing stock decreased consistently. These data indicate that productivity of housing market, particularly the informalone, isconsiderably high, even thoughinreality the qualityof suchhousing is, ingeneral, low.

scholarly journals MODELLING THE RELATIONSHIP BETWEEN POPULATION GROWTH AND INDUSTRIAL OUTPUT IN NIGERIA: AN AUTO-REGRESSIVE DISTRIBUTIVE LAG APPROACH (1980-2017)

2018 ◽  
Vol 1 (2) ◽  
Author(s):  
K. G. Egbulonu ◽  
Erasmus E. Duru ◽  
Henry C. Dim
Keyword(s):  
Growth Rate ◽  
Population Growth ◽  
Population Growth Rate ◽  
Labour Force ◽  
Capacity Utilization ◽  
Industrial Output ◽  
Long Run ◽  
Auto Regressive ◽  
The Relationship ◽  
Total Labour

This research work focuses on the relationship between population growth and industrial output in Nigeria for the period 1980 to 2017. It is particularly interesting to study the relationship between population growth and industrialization in Nigeria because at present, Nigeria is making rapid effort to advance her economy while undergoing a demographic transition that has been projected to be geometric in nature. This research developed an Auto-regressive Distributive Lag (ARDL) model using Index of Industrial Output as the dependent variable and Population growth rate, Birth rate, Total Labour Force (as a percentage of total population that are employed), Capacity Utilization and Manpower Development Index as the independent variables. The data was obtained from the World Bank, the National Population Commission and the Central Bank of Nigeria Statistical Bulletins (various issues). The findings reveal that Population Growth Rate has an inverse relationship with Industrial Output both in the short run and in the long run while Total Labour Force and Capacity Utilization also decrease Industrial Output both in the short and long-run periods. Since the Bounds test reveals a long-run relationship between population and Industrial Output, we recommend a renewed determination and political will to implement the National Policy on Population for sustainable development that outlines a sectoral strategy to manage our rising population.

Relationship between body size and population growth rate in two opportunistic polychaetes

2002 ◽  
Vol 82 (3) ◽  
pp. 403-408 ◽  
Author(s):  
D. Prevedelli ◽  
R. Simonini
Keyword(s):  
Growth Rate ◽  
Body Size ◽  
Sex Ratio ◽  
Population Growth ◽  
Growth Rates ◽  
Life Histories ◽  
Population Growth Rate ◽  
Population Growth Rates ◽  
The Relationship ◽  
Dinophilus Gyrociliatus

The relationship between body size and population growth rate λ has been studied in two species of opportunistic polychaetes, Dinophilus gyrociliatus and Ophryotrocha labronica, which colonize harbour environments. These species exhibit a semi-continuous iteroparous reproductive strategy, are phylogenetically closely-related but differ in body size and in some aspects of their sexuality. Ophryotrocha labronica is about 4 mm in body length, displays only slight sexual dimorphism and its sex ratio is biased towards the female sex in the ratio 2:1. Dinophilus gyrociliatus is about 1 mm in length, the males are extremely small and the sex ratio is strongly biased (3:1) in favour of the females. In spite of the considerable differences in all traits of their life histories and in many demographic parameters, the growth rates of the two populations are very similar. The analyses carried out have shown that the rapid attainment of sexual maturity of D. gyrociliatus gives it an advantage that offsets the greater fecundity of O. labronica. It is very likely that the reproductive peculiarities of D. gyrociliatus help to raise the population growth rates. The ‘saving’ on the male sex achieved both by the shift of the sex ratio in favour of the females and by the reduction in the males' body size would appear to enable D. gyrociliatus to grow at the same rate as O. labronica, a larger and more fecund species.

scholarly journals HUBUNGAN ANTARA FERTILITAS, MORTALITAS, DAN MIGRASI DENGAN LAJU PERTUMBUHAN PENDUDUK

2019 ◽  
Vol 4 (1) ◽  
pp. 15
Author(s):  
Hidayatul Ainy ◽  
Siti Nurrochmah ◽  
Septa Katmawanti
Keyword(s):  
Growth Rate ◽  
Human Resources ◽  
Population Growth ◽  
Significant Relationship ◽  
Population Growth Rate ◽  
Rank Order ◽  
Analysis Technique ◽  
And Migration ◽  
The Relationship ◽  
Low Rate

Abstract: The low rate of population growth in Klojen Districts, cause the population in the region continues to decrease. Reduced population will affect the availability of human resources in the Klojen District. Therefore, conducted a study entitled "The relationship between Fertility, Mortality and Migration with Population Growth Rate”. The purpose of this study was to determine the effect of fertility, mortality and migration to the rate of population growth. This type of research is an explanatory survey. Subjects in this study amounted to 11 urban villages. Data collection using documentation data. Data analysis technique used is a Rank Order technique from Spearman. The results of this study indicate that: (1) The value ρ arithmetic of fertility 0.67 > value ρ table 0.591. (2) The value ρ arithmetic of mortality 0.44 < value ρ table 0.591. (3) The value ρ arithmetic of in-migration 0.12 < value ρ table 0.591. (4) The value ρ arithmetic of out-migration -0.08 < value ρ table 0.591. The conclusion of this study: (1) there is a significant relationship between fertility with population growth rate. (2) there is no significant relationship between mortality, in-migration , and out-migration with population growth rate.Keywords: Fertility, Mortality, Migration, Population Growth RateAbstrak: Rendahnya laju pertumbuhan penduduk di Kecamatan Klojen mengakibatkan jumlah penduduk di wilayah tersebut terus berkurang. Berkurangnya jumlah penduduk akan berdampak pada ketersediaan sumber daya manusia yang ada di wilayah Kecamatan Klojen. Oleh sebab itu, dilakukan penelitian dengan judul “ Hubungan Fertilitas, Mortalitas dan Migrasi dengan Laju Pertumbuhan Penduduk”. Tujuan dari penelitian ini adalah mengetahui pengaruh fertilitas, mortalitas dan migrasi terhadap laju pertumbuhan penduduk. Penelitian ini termasuk jenis penelitian survey bentuk explanatory. Subjek dalam penelitian ini sebanyak 11 kelurahan. Pengumpulan data menggunakan data dokumentasi. Teknik analisis data yang digunakan berupa teknik Rank Order dari Spearman. Hasil penelitian menunjukkan bahwa: (1) Nilai ρ hitung fertilitas 0,67 > nilai ρ tabel 0,591. (2) Nilai ρ hitung mortalitas 0,44 < nilai ρ tabel 0,591. (3) Nilai ρ hitung migrasi masuk 0,12 < nilai ρ tabel 0,591. (4) Nilai ρ hitung migrasi keluar -0,08 < nilai ρ tabel 0,591. Kesimpulan dari penelitian ini: (1) ada hubungan yang signifikan antara fertilitas dengan laju pertumbuhan penduduk. (2) tidak ada hubungan yang signifikan antara mortalitas, migrasi masuk dan migrasi keluar dengan lajunpertumbuhan penduduk.Kata Kunci: Fertilitas, Mortalitas, Migrasi, Laju Pertumbuhan Penduduk

scholarly journals Biological scaling in green algae: the role of cell size and geometry

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Helena Bestová ◽  
Jules Segrestin ◽  
Klaus von Schwartzenberg ◽  
Pavel Škaloud ◽  
Thomas Lenormand ◽  
...  
Keyword(s):  
Growth Rate ◽  
Population Growth ◽  
Population Growth Rate ◽  
Internal Diffusion ◽  
Scaling Exponent ◽  
Power Scaling ◽  
Nutrient Distribution ◽  
Metabolic Scaling ◽  
Key Factor ◽  
Size And Morphology

AbstractThe Metabolic Scaling Theory (MST), hypothesizes limitations of resource-transport networks in organisms and predicts their optimization into fractal-like structures. As a result, the relationship between population growth rate and body size should follow a cross-species universal quarter-power scaling. However, the universality of metabolic scaling has been challenged, particularly across transitions from bacteria to protists to multicellulars. The population growth rate of unicellulars should be constrained by external diffusion, ruling nutrient uptake, and internal diffusion, operating nutrient distribution. Both constraints intensify with increasing size possibly leading to shifting in the scaling exponent. We focused on unicellular algae Micrasterias. Large size and fractal-like morphology make this species a transitional group between unicellular and multicellular organisms in the evolution of allometry. We tested MST predictions using measurements of growth rate, size, and morphology-related traits. We showed that growth scaling of Micrasterias follows MST predictions, reflecting constraints by internal diffusion transport. Cell fractality and density decrease led to a proportional increase in surface area with body mass relaxing external constraints. Complex allometric optimization enables to maintain quarter-power scaling of population growth rate even with a large unicellular plan. Overall, our findings support fractality as a key factor in the evolution of biological scaling.

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