Log in

Relevant bibliographies by topics / Population Growth Model / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Population Growth Model.

Dissertations / Theses on the topic 'Population Growth Model'

Author: Grafiati

Published: 6 September 2023

Last updated: 25 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Population Growth Model.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Håkansson, Nina. "Population growth : analysis of an age structure population model." Thesis, Linköping University, Department of Mathematics, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-4392.

Full text

Abstract:

<p>This report presents an analysis of a partial differential equation, resulting from population model with age structure. The existence and uniqueness of a solution to the equation are proved. We look at stability of the solution. The asymptotic behaviour of the solution is treated. The report also contains a section about the connection between the solution to the age structure population model and a simple model without age structure.</p>

APA, Harvard, Vancouver, ISO, and other styles

2

Tavos, Farid. "How elderly population effects economic growth." Thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-40834.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Le, Roux Johan. "Industrial robot population density and the neoclassical growth model." Diss., University of Pretoria, 2017. http://hdl.handle.net/2263/59851.

Full text

Abstract:

Neoclassical economic growth model theory identifies technology as a key promotor of productivity and long-run economic growth. Theory and literature on the subject has grown significantly since Robert Solow's seminal work in 1956. Notwithstanding the substantial literature, gaps remain in several aspects, including the establishment of suitable metrics that can be applied to assess the impact and influence of certain technologies, and in particular industrial robots, on the modern economy. Given these gaps in knowledge, the aim of this study was to support exploratory research that has fou

APA, Harvard, Vancouver, ISO, and other styles

4

Pignotti, Elettra <1958&gt. "Parameter estimation in a growth model for a biological population." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5169/2/Pignotti_Elettra_tesi.pdf.

Full text

Abstract:

The motivating problem concerns the estimation of the growth curve of solitary corals that follow the nonlinear Von Bertalanffy Growth Function (VBGF). The most common parameterization of the VBGF for corals is based on two parameters: the ultimate length L∞ and the growth rate k. One aim was to find a more reliable method for estimating these parameters, which can capture the influence of environmental covariates. The main issue with current methods is that they force the linearization of VBGF and neglect intra-individual variability. The idea was to use the hierarchical nonlinear model which

APA, Harvard, Vancouver, ISO, and other styles

5

Pignotti, Elettra <1958&gt. "Parameter estimation in a growth model for a biological population." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5169/.

Full text

Abstract:

The motivating problem concerns the estimation of the growth curve of solitary corals that follow the nonlinear Von Bertalanffy Growth Function (VBGF). The most common parameterization of the VBGF for corals is based on two parameters: the ultimate length L∞ and the growth rate k. One aim was to find a more reliable method for estimating these parameters, which can capture the influence of environmental covariates. The main issue with current methods is that they force the linearization of VBGF and neglect intra-individual variability. The idea was to use the hierarchical nonlinear model which

APA, Harvard, Vancouver, ISO, and other styles

6

Smith, Garrett Paul. "Immunocontraceptive vaccines against brucellosis and population growth in feral swine." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/77987.

Full text

Abstract:

Feral swine are a nuisance species across the United States that costs around $1.5 billion each year in agricultural, environmental, and personal property damages. In the last ten years the population of feral swine is estimated to have quadrupled and novel population control methods are needed. Furthermore, feral swine are known carriers of zoonotic diseases such as brucellosis, which threatens both livestock biosecurity and public health. Recombinant multimeric gonadotropin-releasing hormone (mGnRH) has been previously used as a subunit vaccine to induce immunocontraception in feral pigs. Ho

APA, Harvard, Vancouver, ISO, and other styles

7

Kuhle, Wolfgang. "The optimum growth rate for population in the neoclassical overlapping generations model." Frankfurt, M. Berlin Bern Bruxelles New York, NY Oxford Wien Lang, 2006. http://d-nb.info/985753951/04.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Grafeneder-Weissteiner, Theresa, and Klaus Prettner. "Agglomeration and population aging in a two region model of exogenous growth." Inst. für Volkswirtschaftstheorie und -politik, WU Vienna University of Economics and Business, 2009. http://epub.wu.ac.at/1670/1/document.pdf.

Full text

Abstract:

This article investigates the effects of introducing demography into the New Economic Geography. We generalize the constructed capital approach, which relies on infinite individual planning horizons, by introducing mortality. The resulting overlapping generation framework with heterogeneous individuals allows us to study the effects of aging on agglomeration processes by analytically identifying the level of trade costs that triggers catastrophic agglomeration. Interestingly, this threshold value is rather sensitive to changes in mortality. In particular, the introduction of a positive mortali

APA, Harvard, Vancouver, ISO, and other styles

9

Urbanová, Kateřina. "Simulační model populačního vývoje." Master's thesis, Vysoká škola ekonomická v Praze, 2008. http://www.nusl.cz/ntk/nusl-12083.

Full text

Abstract:

In this thesis, called a simulation model of population growth, there was created the simulation model of a population growth in the Czech Republic to the year 2052. First there was constructed the projection through the component method used in demography. Deterministic values obtained by this method are then used in the simulation analysis. In the simulation analysis there was conducted an experiment with three variables which influence the population growth (the fertility, life expectancy/the coefficient of the decline of the probability of the death/ and the migration balance). With the su

APA, Harvard, Vancouver, ISO, and other styles

10

O'Neill, Deborah M. "Estimating Black Bear Population Size, Growth Rate, and Minimum Viable Population Using Bait Station Surveys and Mark-Recapture Methods." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/34140.

Full text

Abstract:

We initiated bait station surveys for black bears in southwestern Virginia in 1999. Bait station surveys are intended to be used as an index to follow bear population trend over time. We compared the bait station visitation (black bear visitation) to black bear harvest and mast surveys 1999 = 2002. The mean bait station visitation rate during 1999 - 2002 was 15.3% (SE = 2.89, n = 4). The number of bears harvested in the 3 counties that also had bait station surveys was 48 (31 males, 17 females), 59 (44 males, 15 females), 45 (32 males, 13 females), and 43 (26 males, 17 females) in 1999, 20

APA, Harvard, Vancouver, ISO, and other styles

11

Gil, de Weir Karine. "Whooping crane (Grus americana) demography and environmental factors in a population growth simulation model." Texas A&M University, 2005. http://hdl.handle.net/1969.1/3778.

Full text

Abstract:

The Whooping Crane (Grus americana) is among North AmericaÂs most charismatic species. Between 1938 and 2004, the population that migrates between Aransas National Wildlife Refuge (ANWR) and Wood Buffalo National Park (WBNP), grew from 18 to 217 individuals. The recovery plan objective for this endangered species is to downlist the population in 2035, but this requires interpretive assessment of population responses to environmental factors over the long term. I analyzed 27 years of banding data, 37 years of nest monitoring data, and 20 years of winter reports to estimate age-specific mortali

APA, Harvard, Vancouver, ISO, and other styles

12

Gruescu, Sandra. "Population ageing and economic growth : education policy and family policy in a model of endogenous growth ; with 32 tables /." Heidelberg ; New York : Physica-Verl, 2007. http://deposit.d-nb.de/cgi-bin/dokserv?id=2846158&prov=M&dok_var=1&dok_ext=htm.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Gruescu, Sandra. "Population ageing and economic growth : education policy and family policy in a model of endogenous growth; with 32 tab. /." Heidelberg : Physica-Verl, 2007. http://swbplus.bsz-bw.de/bsz256686149cov.htm.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Li, Chunmo. "The effects of local economic and environmental policies on county population and employment growth." The Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=osu1135273183.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Zhao, Suwen. "Simulating urban growth for Baltimore-Washington metropolitan area by coupling SLEUTH model and population projection." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/73649.

Full text

Abstract:

This study used two modelling approaches to predict future urban landscape for the Baltimore-Washington metropolitan areas. In the first approach, we implemented traditional SLEUTH urban simulation model by using publicly available and locally-developed land cover and transportation data. Historical land cover data from 1996, 2001, 2006, and 2011 were used to calibrate SLEUTH model and predict urban growth from 2011 to 2070. SLEUTH model achieved 94.9% of overall accuracy for a validation year of 2014. For the second modelling approach, we predicted future county-level population (e.g., 2050)

APA, Harvard, Vancouver, ISO, and other styles

16

Wang, Yan. "Persistence and Extinction Dynamics in Reaction-Diffusion-Advection Stream Population Model with Allee Effect Growth." W&M ScholarWorks, 2019. https://scholarworks.wm.edu/etd/1563899009.

Full text

Abstract:

The question how aquatic populations persist in rivers when individuals are constantly lost due to downstream drift has been termed the ``drift paradox." Reaction-diffusion-advection models have been used to describe the spatial-temporal dynamics of stream population and they provide some qualitative explanations to the paradox. Here random undirected movement of individuals in the environment is described by passive diffusion, and an advective term is used to describe the directed movement in a river caused by the flow. In this work, the effect of spatially varying Allee effect growth rate on

APA, Harvard, Vancouver, ISO, and other styles

17

McChesney, Ronald John. "A Three Scale Metropolitan Change Model." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1209393707.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Gruescu, Sandra [Verfasser]. "Population ageing and economic growth : education policy and family policy in a model of endogenous growth ; with 32 tables / Sandra Gruescu." Heidelberg : Physica-Verl, 2007. http://d-nb.info/98539871X/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Jones, Darren Reed. "The Two Sides of Posttraumatic Growth: A Study of the Janus Face Model In a College Population." University of Toledo / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1278526766.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Kärrman, Victoria. "The effects of the Swedish moosemanagement." Thesis, Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-77069.

Full text

Abstract:

The purpose of this study was to examine the effects on the Swedish moose populationof a new moose management system introduced in 2012. To this end, the size of thepopulation had to be measured. The methodology used was an empirical version of theGordon–Schaefer bioeconomic model previously employed to estimate Sweden’s wildboar population. The Effort variable for the model was modified in that traffic accidentsrelative to traffic density served as a proxy for it. The study investigated years for whichdata was available, namely 2004–2017. Nineteen out of Sweden’s 21 Counties wereincluded in t

APA, Harvard, Vancouver, ISO, and other styles

21

Fazal, Fatema. "The urban development in Dubai : A descriptive analysis." Thesis, Uppsala University, Department of Economics, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-88550.

Full text

Abstract:

<p> </p><p>The aim of this paper is to analyse the urban development in Dubai by means of the fourquadrant model, presented by DiPasquale and Wheaton, which represents the market for real estate use and assets. The focus is on factors such as economic growth, access to oil, population growth and the incentive of the government to promote developments in Dubai, to study how they affect the real estate market. It is observed how all these factors contribute to the expansion of the construction sector and thereby the stock of space. However, because Dubai's economy is independent of the oil secto

APA, Harvard, Vancouver, ISO, and other styles

22

Kielbassa, Janice. "Mathematical modelling of temperature effects on the life-history traits and the population dynamics of bullhead (Cottus gobio)." Thesis, Lyon 1, 2010. http://www.theses.fr/2010LYO10181.

Full text

Abstract:

La température de l'eau joue un rôle majeur dans le cycle de vie des poissons. Dans un contexte de changement climatique global, le réchauffement peut avoir un impact fort sur la croissance, la fécondité et la survie. L'enjeu de cette thèse est la modélisation mathématique de l'influence de la température sur les traits d'histoire de vie d'une population de chabot (Cottus gobio) afin de faire de la prédiction à la fois au niveau individuel et populationnel. Les données expérimentales qui permettront de calibrer les modèles sont issues du bassin de la Drôme (France) et plus particulièrement du

APA, Harvard, Vancouver, ISO, and other styles

23

Madrid, Canales Ignacio. "Model of Cellular Growth under Stress : Emergence of Heterogeneity and Impact of the Environment." Electronic Thesis or Diss., Institut polytechnique de Paris, 2024. http://www.theses.fr/2024IPPAX008.

Full text

Abstract:

Cette thèse porte sur l'analyse statistique et mathématique de la croissance cellulaire à l'échelle individuelle sous l'effet d'un stress. À partir de l'analyse des données recueillies par Sebastián Jaramillo et James Broughton sous la direction de Meriem El Karoui, nous avons construit différents modèles permettant une compréhension à différents niveaux de l'impact que la réponse hétérogène au stress génotoxique (réponse SOS) a sur la croissance d'une population de bactéries Escherichia coli. Pour modéliser la dynamique de ces populations on utilise des processus stochastiques à valeurs mesur

APA, Harvard, Vancouver, ISO, and other styles

24

Johansson, Rikard. "Model-Based Hypothesis Testing in Biomedicine : How Systems Biology Can Drive the Growth of Scientific Knowledge." Doctoral thesis, Linköpings universitet, Avdelningen för medicinsk teknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-141614.

Full text

Abstract:

The utilization of mathematical tools within biology and medicine has traditionally been less widespread compared to other hard sciences, such as physics and chemistry. However, an increased need for tools such as data processing, bioinformatics, statistics, and mathematical modeling, have emerged due to advancements during the last decades. These advancements are partly due to the development of high-throughput experimental procedures and techniques, which produce ever increasing amounts of data. For all aspects of biology and medicine, these data reveal a high level of inter-connectivity bet

APA, Harvard, Vancouver, ISO, and other styles

25

Stevenson, Christopher Eric, and Chris Stevenson@aihw gov au. "A microsimulation study of the benefits and costs of screening for colorectal cancer." The Australian National University. National Centre for Epidemiology and Population Health, 2001. http://thesis.anu.edu.au./public/adt-ANU20040611.162207.

Full text

Abstract:

This thesis examines the benefits and costs of screening for colorectal cancer in the context of an organised population screening programme. It uses microsimulation modelling to derive an optimally cost-effective screening protocol for various combinations of the available screening tests. ¶ First a mathematical model for the natural history of colorectal cancer is derived, based on analyses of Australian population and hospital-based cancer registries combined with data from published studies. Then a model for population based screening is derived based mainly on data from published screenin

APA, Harvard, Vancouver, ISO, and other styles

26

Jönsson, Ingela, and Mattias Nilsson. "Klassiska populationsmodeller kontra stokastiska : En simuleringsstudie ur matematiskt och datalogiskt perspektiv." Thesis, Växjö University, School of Mathematics and Systems Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-2262.

Full text

Abstract:

<p>I detta tvärvetenskapliga arbete studeras från den matematiska sidan tre klassiska populationsmodeller: Malthus tillväxtmodell, Verhulsts logistiska modell och Lotka-Volterras jägarebytesmodell. De klassiska modellerna jämförs med stokastiska. De stokastiska modeller som studeras är födelsedödsprocesser och deras diffusionsapproximation. Jämförelse görs med medelvärdesbildade simuleringar.</p><p>Det krävs många simuleringar för att kunna genomföra jämförelserna. Dessa simuleringar måste utföras i datormiljö och det är här den datalogiska aspekten av arbetet kommer in. Modellerna och deras r

APA, Harvard, Vancouver, ISO, and other styles

27

Li, Wenjuan. "Firms and people in place : driving forces for regional growth." Doctoral thesis, Umeå : Department of Social and Economic Geography, Umeå University, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1360.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Nilsson, Mattias, and Ingela Jönsson. "Klassiska populationsmodeller kontra stokastiska : En simuleringsstudie ur matematiskt och datalogiskt perspektiv." Thesis, Växjö University, School of Mathematics and Systems Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-2263.

Full text

Abstract:

<p>I detta tvärvetenskapliga arbete studeras från den matematiska sidan tre klassiska populationsmodeller: Malthus tillväxtmodell, Verhulsts logistiska modell och Lotka-Volterras jägarebytesmodell. De klassiska modellerna jämförs med stokastiska. De stokastiska modeller som studeras är födelsedödsprocesser och deras diffusionsapproximation. Jämförelse görs med medelvärdesbildade simuleringar.</p><p>Det krävs många simuleringar för att kunna genomföra jämförelserna. Dessa simuleringar måste utföras i datormiljö och det är här den datalogiska aspekten av arbetet kommer in. Modellerna och deras r

APA, Harvard, Vancouver, ISO, and other styles

29

Picart, Delphine. "Modélisation et estimation des paramètres liés au succès reproducteur d'un ravageur de la vigne (Lobesia botrana DEN. & SCHIFF.)." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2009. http://tel.archives-ouvertes.fr/tel-00405686.

Full text

Abstract:

L'objectif de ce travail de thèse est de développer un modèle mathématique pour l'étude et la compréhension de la dynamique des populations d'un insecte ravageur, l'Eudémis de la vigne, dans son écosystème. Le modèle proposé est un système d'équations aux dérivées partielles (EDP) de type hyperbolique qui décrit les variations numériques au cours du temps de la population en fonction des stades de développement, du sexe des individus et des conditions environnementales. La ressource alimentaire, la température, l'humidité et la prédation sont les principaux facteurs environnementaux du modèle

APA, Harvard, Vancouver, ISO, and other styles

30

Tomášková, Markéta. "Přelidnění - globální demografický problém." Master's thesis, Vysoká škola ekonomická v Praze, 2015. http://www.nusl.cz/ntk/nusl-205991.

Full text

Abstract:

This diploma thesis is focused on overpopulation problem, which is a very debatable term in this time. The thesis analyzes recent development in fertility, mortality and migration in each continent with aim to evaluate threats of the overpopulation. Although this term is more like global problem, the thesis aims to specify and identify continents, which might be truly affected by overpopulation. Part of the diploma thesis is focused on calculation of possible future development of population size based on mathematical models which are birth - immigration - death process and logistic (Verhulst)

APA, Harvard, Vancouver, ISO, and other styles

31

Hounslow, Michael John. "A discretized population balance for simultaneous nucleation, growth and aggregation /." Title page, summary and table of contents only, 1990. http://web4.library.adelaide.edu.au/theses/09PH/09phh839.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Henrique, de Santana Luís. "Growth models incorporating technology and a new population dynamics equation." Universidade Federal de Pernambuco, 2006. https://repositorio.ufpe.br/handle/123456789/5770.

Full text

Abstract:

Made available in DSpace on 2014-06-12T17:41:47Z (GMT). No. of bitstreams: 2 arquivo7344_1.pdf: 869852 bytes, checksum: 2118d98125244ab0d4f8a6a11f480308 (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2006<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Henrique de Santana, Luís; Menezes Campello de Souza, Fernando. Growth models incorporating technology and a new population dynamics equation. 2006. Dissertação (Mestrado). Programa de Pós-Graduação em Engenharia de Produção, Universidade Federal de Pernambuco, Recife, 200

APA, Harvard, Vancouver, ISO, and other styles

33

Wasson, Samantha Rae. "Increasing Introductory Biology Students' Modeling Mastery Through Visualizing Population Growth Models." BYU ScholarsArchive, 2021. https://scholarsarchive.byu.edu/etd/9181.

Full text

Abstract:

In introductory biology, college students are taught to predict how populations will grow and change over time by using population growth models. These models are commonly represented as mathematical equations. However, students consistently struggle when math and biology concepts intersect in the classroom, and these struggles lead to suboptimal understanding of how mathematical population models are designed and used. Education literature suggests that students may struggle with population modeling because of math anxiety, the high cognitive load of the task, and the lack of scaffolding for

APA, Harvard, Vancouver, ISO, and other styles

34

Ramula, Satu. "Population viability analysis for plants : practical recommendations and applications." Doctoral thesis, Stockholm : Department of Botany, Stockholm University, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-845.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Wiff, Rodrigo. "Predicting food consumption and production in fish populations : allometric scaling and size-structured models." Thesis, University of St Andrews, 2010. http://hdl.handle.net/10023/935.

Full text

Abstract:

Life-history traits in fish populations are highly correlated. A subset of these correlations are called allometric scaling, they refer to biological processes which can be described using body size as independent variable. Particularly, allometric scaling related with food consumption (Q) and biomass production (P) has gained the attention of ecologists for several decades. This thesis proposes a quantitative framework for food consumption, which allows both the identification of the mechanisms underlying the allometric scaling for Q and the development of a predictive model for consumption t

APA, Harvard, Vancouver, ISO, and other styles

36

Benedito, Antone dos Santos. "Multi-stage population models applied to insect dynamics." Botucatu, 2020. http://hdl.handle.net/11449/192335.

Full text

Abstract:

Orientador: Cláudia Pio Ferreira<br>Abstract: This thesis presents two manuscripts previously sent to publication in scientific journals. In the first manuscript, a delay differential equation model is developed to study the dynamics of two Aedes aegypti mosquito populations: infected by the intracellular bacteria Wolbachia and non-infected (wild) individuals. All the steady states of the system are determined, namely extinction of both populations, extinction of the infected population and persistence of the non-infected one, and coexistence. Their local stability is analyzed, including Hopf

APA, Harvard, Vancouver, ISO, and other styles

37

Véron, Matthieu. "Variabilité de traits d'histoire de vie et implications pour la modélisation des dynamiques de population : application au stock de sardines du golfe de Gascogne Major changes in sardine growth and body condition in the Bay of Biscay between 2003 and 2016: Temporal trends and drivers, in Progress in Oceanography 182, March 2020." Thesis, Brest, 2020. http://www.theses.fr/2020BRES0026.

Full text

Abstract:

La compréhension des facteurs et des processus à l’origine des stratégies de vie des populations marines est un défi majeur en écologie halieutique, et un prérequis nécessaire pour la gestion et la conservation de ces ressources. Chez de nombreuses espèces exploitées, des modifications importantes de leurs traits d’histoire de vie ont été observées et apparaissent étroitement liées au changement global. Cependant, malgré l’importance de ces traits dans la régulation des dynamiques de ces populations, peu de modèles d’évaluation prennent en compte leur variabilité. Cette thèse propose d’identif

APA, Harvard, Vancouver, ISO, and other styles

38

Sevillano, Garcia Mayeya Lucero. "The Effects of Biological Control Agents on Population Growth and Spread of Melaleuca quinquenervia." Scholarly Repository, 2010. http://scholarlyrepository.miami.edu/oa_dissertations/406.

Full text

Abstract:

The main goal of this study was to evaluate the effectiveness of two biological control agents in reducing population growth and spread of the invasive tree Melaleuca quinquenervia, a subtropical tree native to Australia, and invasive in Florida, Puerto Rico, and the Bahamas. While in Florida two insects Oxyops vitiosa (weevil), and Boreioglycaspis melaleucae (psyllid) have been established as biocontrol agents, in Puerto Rico only psyllids are present, and in the Bahamas no biocontrol agents are present. This study combined demographic data, experiments and mathematical models to investigate

APA, Harvard, Vancouver, ISO, and other styles

39

Cohen, Margaret A. "Estimating the growth rate of harmful algal blooms using a model averaged method." View electronic thesis (PDF), 2009. http://dl.uncw.edu/etd/2009-1/rp/cohenm/margaretcohen.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Strandberg, Per Erik. "Mathematical models of bacteria population growth in bioreactors: formulation, phase space pictures, optimisation and control." Thesis, Linköping University, Department of Mathematics, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2337.

Full text

Abstract:

<p>There are many types of bioreactors used for producing bacteria populations in commercial, medical and research applications. </p><p>This report presents a systematic discussion of some of the most important models corresponding to the well known reproduction kinetics such as the Michaelis-Menten kinetics, competitive substrate inhibition and competitive product inhibition. We propose a modification of a known model, analyze it in the same manner as known models and discuss the most popular types of bioreactors and ways of controlling them. </p><p>This work summarises much of the known resu

APA, Harvard, Vancouver, ISO, and other styles

41

Kupka, Kasper. "Effects of population size, density and local environment on the population dynamics of the fragrant orchid (Gymnadenia conopsea)." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-447703.

Full text

Abstract:

A wide majority of orchid populations are decreasing due to habitat fragmentation and to changes in land management. Population size, density and habitat quality are factors that are expected to be positively related to the viability and future growth of a population. We evaluated if population size, density and soil organic matter were good predictors of growth, survival, flowering, recruitment, and growth rate in 18 populations of the long-lived orchid Gymnadenia conopsea. We followed the populations for four years. Recruitment in 2020 increased with population size, and survival in 2018 was

APA, Harvard, Vancouver, ISO, and other styles

42

Webber, D'Arcy Nathan. "Demography and Population Projections of the Invasive Tunicate Styela clava in southern New Zealand." Thesis, University of Canterbury. Biological Sciences, 2010. http://hdl.handle.net/10092/4950.

Full text

Abstract:

This thesis is about the demography of the tunicate Styela clava, a species of some notoriety because of its invasiveness and impacts in many parts of the world. Species assemblages have continuously changed throughout evolutionary history, but the rate of today’s anthropogenically facilitated dispersal is unparalleled in history. Non-indigenous species (NIS) are now considered one of the most important risks to native biodiversity. NIS become invasive by becoming both widespread and locally dominant. This requires that a species becomes established, spreads locally, and increases in abundance

APA, Harvard, Vancouver, ISO, and other styles

43

Nothnagl, Margit. "Interaction between greenhouse grown chrysanthemum and Frankliniella occidentalis : a modelling approach /." Alnarp : Department of Crop Science, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/200697.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Dentamaro, Alex Alves. "Estudo da evolução de modelos de crescimento populacional e métodos para obtenção de parâmetros /." Rio Claro, 2019. http://hdl.handle.net/11449/191288.

Full text

Abstract:

Orientador: Jamil Viana Pereira<br>Resumo: Neste trabalho, será abordada a teoria matemática utilizada no estudo de quatro modelos clássicos de crescimento populacional: Malthus, Verhulst, Gompertz e Montroll. Serão apresentadas e/ou discutidas algumas de suas características, propriedades, diferenças e diferentes métodos para obtenção de seus parâmetros. Posteriormente, estes modelos e métodos serão aplicados a um conjunto de dados relativos ao crescimento populacional do Brasil. Também foi elaborada uma atividade para ser aplicada no Ensino Médio, na qual se explora, por tabelas e gráficos,

APA, Harvard, Vancouver, ISO, and other styles

45

Levy, Amanda. "Use of Simulation Analyses to Investigate Yellowfin Tuna (Thunnus albacares) Growth Models in the Atlantic Ocean Incorporating Gear Selectivity." NSUWorks, 2012. http://nsuworks.nova.edu/occ_stuetd/177.

Full text

Abstract:

The growth rate of a fish is a fundamental function used in stock assessments to estimate the population size and the fishery pressure affecting the species. There has been recent debate within the stock assessment community regarding which type of growth model best represents the true growth rate of yellowfin tuna (Thunnus albacares), in the Atlantic Ocean; specifically, should assessments use a traditional von Bertalanffy growth curve or a so-called “two-stanza” growth curve, which combines one growth rate for smaller individual tuna and another for larger sizes. Using a simulated population

APA, Harvard, Vancouver, ISO, and other styles

46

Etienne, Freed. "Urban Growth and Segregation in the Roanoke, Virginia, Metropolis: The Effects of Low-Density Development on Low-Income Populations and Racial Minorities." VCU Scholars Compass, 2006. http://scholarscompass.vcu.edu/etd/1393.

Full text

Abstract:

This dissertation examines urban growth patterns in the Roanoke, Virginia, metropolis. It draws on the literature of contemporary human ecology and social area analysis to examine the effects of low-density development on low-income populations and racial minorities. The continuous spread of residential development beyond the boundaries of the central city and older suburbs into more distant, once rural areas is segregating the metropolitan area by race and income. Since the prominence of the so-called "Chicago School" of urban sociology (1913-1940), contemporary urban sociologists have outl

APA, Harvard, Vancouver, ISO, and other styles

47

Heldt, Frank Stefan [Verfasser], Timo [Akademischer Betreuer] Frensing, and Udo [Akademischer Betreuer] Reichl. "Mathematical models of influenza A virus infection : from intracellular replication to virus growth in cell populations / Frank Stefan Heldt. Betreuer: Timo Frensing ; Udo Reichl." Magdeburg : Universitätsbibliothek, 2015. http://d-nb.info/1069159808/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Corrêa, Christiane Erondina. "Ecologia de populações de Psychotria nuda (Rubiaceae) em Floresta Ombrófila Densa." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/315903.

Full text

Abstract:

Orientador: Flavio Antonio Maës dos Santos<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-08-17T22:02:12Z (GMT). No. of bitstreams: 1 Correa_ChristianeErondina_D.pdf: 5936327 bytes, checksum: 06835275c2d435b9e58c2c5894d02a54 (MD5) Previous issue date: 2011<br>Resumo: Os habitats variam entre si quanta às características abióticas como luminosidade e topografia. A variação altitudinal pode conter essas diferenças e influenciar variações em escala individual e populacional das espécies. 0 objetivo geral desse traba

APA, Harvard, Vancouver, ISO, and other styles

49

Rézouki, Célia. "The influence of lifestyle on demographic responses to climate change : the Alpine marmot as a case study." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1161/document.

Full text

Abstract:

Comprendre la réponse des populations aux variations environnementales est un défi central en écologie et est devenu un enjeu indéniable ces dernières années avec le changement climatique. Dans ce contexte, nous pouvons nous attendre à ce que certaines caractéristiques écologiques propres aux espèces, comme le mode de vie, qui ont évolué en réponse à des contraintes environnementales et qui influencent les traits d'histoire de vie des espèces, puissent façonner la démographie des populations en environnement variable. Pourtant, cette influence du mode de vie sur la réponse démographique des po

APA, Harvard, Vancouver, ISO, and other styles

50

Kubík, Rudolf. "Lidský kapitál jako determinanta ekonomického růstu." Doctoral thesis, Vysoká škola ekonomická v Praze, 2008. http://www.nusl.cz/ntk/nusl-114429.

Full text

Abstract:

Research of the relationship between human capital and economic growth has been significantly developing since 1960s'. This thesis aims to contribute to the topic of human capital, map its importance in the theoretical and empirical economics and examine the influence on macroeconomic growth. In most of the countries human capital and education are budgeted mainly from the public resources thus is the human capital theory important for the public sector as well. First part of the thesis presents the main growth models and its evolution concerning also the human capital. In the second part ther

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!