Stochastic Population Projection at Design Level

1972 ◽  
Vol 98 (6) ◽  
pp. 883-896
Author(s):  
Peter M. Meier
Keyword(s):  
Population Projection

scholarly journals Host-Plant Variations Affect the Biotic Potential, Survival, and Population Projection of Myzus persicae (Hemiptera: Aphididae)

Insects ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 375
Author(s):  
Muhammad Yasir Ali ◽  
Tayyaba Naseem ◽  
Muhammad Arshad ◽  
Ijaz Ashraf ◽  
Muhammad Rizwan ◽  
...  
Keyword(s):  
Myzus Persicae ◽  
Growth Parameters ◽  
Population Projection ◽  
Chili Pepper ◽  
Intrinsic Rate Of Increase ◽  
Economic Damage ◽  
Pepper Plant ◽  
Net Reproductive Rate ◽  
Rate Of Increase ◽  
Wide Range

The green peach aphid, Myzus persicae Sulzer (Hemiptera: Aphididae), a polyphagous insect pest is a major threat to a wide range of crops worldwide. Aiming to evaluate the life history traits of M. persicae, feeding on different host plants, we used five vegetables: cabbage, Brassica oleracea (Brassicaceae); chinese cabbage, B. rapa (Brassicaceae); chili pepper, Capsicum annum (Solanaceae); crown daisy, Chrysanthemum coronarium (Asteraceae); and eggplant, Solanum melongena (Solanaceae). TWOSEX-MSchart software was used for the statistical analysis about the age-stage, two-sex life table theory. The highest fecundity (69.65 individuals) rate of M. persicae, intrinsic rate of increase (r = 0.425 d−1), finite rate of increase (λ = 1.531 d−1), net reproductive rate (R0 = 69.65 offspring), and shortest mean generation time (T = 9.964 d) were recorded on the chili pepper plant. Whereas, lower fitness occurred on cabbage. The findings attained from population growth parameters indicate that chili pepper is the most susceptible plant, while cabbage is resistant to aphids. Population projection results also supported this statement, as the final total population size on cabbage was significantly lower than other plants. The reported information would be useful for devising integrated pest management programs, particularly those involving M. persicae. This information also suggests the adaptability of M. persicae causing economic damage to these vegetable cultivars.

On Microanalytic Simulation and Its Applications in Population Projection

1978 ◽  
Vol 29 (4) ◽  
pp. 349-360 ◽  
Author(s):  
Alice Nakamura ◽  
Masao Nakamura
Keyword(s):  
Population Projection

Population projection

2018 ◽  
pp. 139-143
Author(s):  
Alan J.B. Anderson
Keyword(s):  
Population Projection

scholarly journals Analysis of the Need on Specialist Doctors in East Java from 2020 to 2030 using the Spectrum Application

2019 ◽  
Vol 8 (1) ◽  
pp. 1
Author(s):  
Istianatul Ula ◽  
Rifanda Bachraini Firdaus
Keyword(s):  
Qualitative Research ◽  
Human Resources ◽  
Human Resource ◽  
Health Sector ◽  
Secondary Data ◽  
Development Planning ◽  
Population Projection ◽  
Health Needs ◽  
Specialist Doctor

Human resources in the health sector need to be improved on both the aspects of quality and quantity. This is important for development planning. According to BPS in 2017 the population of East Java was 39,292,972 people, while in 2018 there were 39,500,851 people. Data from SISDMK revealed that there were 1,821specialist doctors in 2017 and 2,531 in 2018. This qualitative research was aimed at understanding and exploring deeply the secondary data obtained from the 2017–2018 SISDMK. The data was analyzed using Spectrum Software for population projection and human resource health needs. The results showed that the population projection of East Java kept increasing. In 2020 it will reach 39,886,288 people, and in 2030 there will be as many as 42,329,015 people. The projection of the number of specialist doctor needs in East Java in 2020 is 4,387, which will keep increasing to 5,079 in 2030. The ratio of specialist doctors in 2020 will be 36.26 per 100,000 population, and in 2030 it will be 35.27 per 100,000.

scholarly journals Perencanaan Tempat Pengolahan Sampah Reduce, Reuse, Recycle Menggunakan Black Soldier Fly di Desa Karyamulya Kabupaten Ciamis

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
Melly Mellyanawaty ◽  
Hendrik Iskandar ◽  
Estin Nofiyanti ◽  
Nurcholis Salman
Keyword(s):  
Solid Waste ◽  
Food Waste ◽  
Random Sampling ◽  
Negative Impact ◽  
Population Projection ◽  
Treatment System ◽  
Stratified Random Sampling ◽  
Preliminary Design ◽  
Black Soldier Fly ◽  
Environment And Health

Solid waste known as garbage still becomes one of the most concerning issues   in Indonesia. It increases every year; however, the landfill was not expanded. The accumulation of garbage could give a negative impact on the environment and health. Due to this reason, there is an alternative suggested to reduce the garbage and its sources. The initiative called ‘Bank sampah’, itis a garbage treatment system which is managed by the community. In addition, the Reduce, Reuse, Recycle (3R) laystall was built to carry out some ‘Bank Sampah’. This study conducted a preliminary design of 3R laystall at Desa Karyamulya Kecamatan Cisaga Kabupaten Ciamis.  The design of the 3R laystall using black soldier fly method to decompose organic materials is employed in this research. The quantity and the density of the garbage were required to determine the design of the lay stall. Stratified random sampling was conducted for 8 days. Desa Karyamulya generates 2.361 liters/person/day or 0.236 kg/person/day. According to a population projection for the next 10 years, the estimation of garbage composition consists of food waste (52.15%); plastic (23.58%); paper (9.23%); fabric (0.45%); wood/leaf (6.38%); diapers (2.85%); metal (0.94%); rubber/leather (2.19%); glass (0.17%); and styrofoam (2.04%). From the quantity and composition of the garbage, it requires approximately  94 m2 of the area and an  estimated  funds needed as Rp. 483.908.600

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