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Dissertations / Theses on the topic 'Random allocation'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Cheung, Wing-Keung. "Monte Carlo simulation on 2D random point pattern : Potts model and its application to econophysics /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?PHYS%202005%20CHEUNG.

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2

Shi, Yongsheng. "Resource Allocation in Cellular Networks with Coexisting Femtocells and Macrocells." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/37180.

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Over the last decade, cellular networks have grown rapidly from circuit-switch-based voice-only networks to IP-based data-dominant networks, embracing not only traditional mobile phones, but also smartphones and mobile computers. The ever-increasing demands for reliable and high-speed data services have challenged the capacity and coverage of cellular networks. Research and development on femtocells seeks to provide a solution to fill coverage holes and to increase the network capacity to accommodate more mobile terminals and applications that requires higher bandwidth. Among the challenges

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Yeung, Chi-Ho. "Application of statistical physics on agent dynamics in multi-agent systems and resource allocation in random networks /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?PHYS%202006%20YEUNG.

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Halmann, Marju. "Email Mining Classifier : The empirical study on combining the topic modelling with Random Forest classification." Thesis, Högskolan i Skövde, Institutionen för informationsteknologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-14710.

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Filtering out and replying automatically to emails are of interest to many but is hard due to the complexity of the language and to dependencies of background information that is not present in the email itself. This paper investigates whether Latent Dirichlet Allocation (LDA) combined with Random Forest classifier can be used for the more general email classification task and how it compares to other existing email classifiers. The comparison is based on the literature study and on the empirical experimentation using two real-life datasets. Firstly, a literature study is performed to gain ins

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Malik, Adeel. "Stochastic Coded Caching Networks : a Study of Cache-Load Imbalance and Random User Activity." Electronic Thesis or Diss., Sorbonne université, 2022. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2022SORUS045.pdf.

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Dans cette thèse, nous élevons la mise en cache codée de son cadre purement théorique de l'information à un cadre stochastique où la stochasticité des réseaux provient de l'hétérogénéité des comportements de demande des utilisateurs. Nos résultats soulignent que la stochasticité des réseaux assistés par cache peut conduire à la disparition des gains de la mise en cache codée. Nous déterminons l'étendue exacte du goulot d'étranglement du déséquilibre de la charge du cache codé dans les réseaux stochastiques, ce qui n'a jamais été exploré auparavant. Notre travail fournit des techniques pour att

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Karlsson, Henrik. "Uplift Modeling : Identifying Optimal Treatment Group Allocation and Whom to Contact to Maximize Return on Investment." Thesis, Linköpings universitet, Statistik och maskininlärning, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-157962.

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This report investigates the possibilities to model the causal effect of treatment within the insurance domain to increase return on investment of sales through telemarketing. In order to capture the causal effect, two or more subgroups are required where one group receives control treatment. Two different uplift models model the causal effect of treatment, Class Transformation Method, and Modeling Uplift Directly with Random Forests. Both methods are evaluated by the Qini curve and the Qini coefficient. To model the causal effect of treatment, the comparison with a control group is a necessit

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Liv, Per. "Efficient strategies for collecting posture data using observation and direct measurement." Doctoral thesis, Umeå universitet, Yrkes- och miljömedicin, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-59132.

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Relationships between occupational physical exposures and risks of contracting musculoskeletal disorders are still not well understood; exposure-response relationships are scarce in the musculoskeletal epidemiology literature, and many epidemiological studies, including intervention studies, fail to reach conclusive results. Insufficient exposure assessment has been pointed out as a possible explanation for this deficiency. One important aspect of assessing exposure is the selected measurement strategy; this includes issues related to the necessary number of data required to give sufficient in

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Abdelalim, Kaoutar. "Study and optimisation of IEEE 802.11 PHY and MAC protocols towards a new generation integrated in 5G." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2019. http://www.theses.fr/2019IMTA0163.

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L’évolution des réseaux sans fil et leur utilisation massive soulève de plus en plus de défis. Cela est particulièrement vrai pour les environnements denses pour lesquels la performance par utilisateur est un problème clé. Le standard IEEE 802.11ax a été lancé dans ce contexte, afin d’améliorer les protocoles des couches PHY(Physical) et MAC (Medium Access Control) en maintenant la rétrocompatibilité avec les standards précédents. Les travaux de cette thèse rejoignent les mêmes perspectives que le IEEE 802.11ax, à savoir l’amélioration des protocoles existants ou l’introduction de nouvelles te

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Victors, Mason Lemoyne. "A Classification Tool for Predictive Data Analysis in Healthcare." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/5639.

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Hidden Markov Models (HMMs) have seen widespread use in a variety of applications ranging from speech recognition to gene prediction. While developed over forty years ago, they remain a standard tool for sequential data analysis. More recently, Latent Dirichlet Allocation (LDA) was developed and soon gained widespread popularity as a powerful topic analysis tool for text corpora. We thoroughly develop LDA and a generalization of HMMs and demonstrate the conjunctive use of both methods in predictive data analysis for health care problems. While these two tools (LDA and HMM) have been used in co

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10

Sun, Xusheng. "Optimal distributed detection and estimation in static and mobile wireless sensor networks." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/44825.

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This dissertation develops optimal algorithms for distributed detection and estimation in static and mobile sensor networks. In distributed detection or estimation scenarios in clustered wireless sensor networks, sensor motes observe their local environment, make decisions or quantize these observations into local estimates of finite length, and send/relay them to a Cluster-Head (CH). For event detection tasks that are subject to both measurement errors and communication errors, we develop an algorithm that combines a Maximum a Posteriori (MAP) approach for local and global decisions with low-

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MARAKBI, ZAKARIA. "Mean-Variance Portfolio Optimization : Challenging the role of traditional covariance estimation." Thesis, KTH, Industriell Marknadsföring och Entreprenörskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-199185.

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Ever since its introduction in 1952, the Mean-Variance (MV) portfolio selection theory has remained a centerpiece within the realm of e_cient asset allocation. However, in scienti_c circles, the theory has stirred controversy. A strand of criticism has emerged that points to the phenomenon that Mean-Variance Optimization su_ers from the severe drawback of estimation errors contained in the expected return vector and the covariance matrix, resulting in portfolios that may signi_cantly deviate from the true optimal portfolio. While a substantial amount of e_ort has been devoted to estimating the

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12

Fusco, Pedro Ehrmann Brasiliense. "Invaginações (plicaturas) da grande curvatura gástrica e da parede anterior do estômago para controle de peso: modelos experimentais." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/5/5132/tde-10032010-114604/.

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INTRODUÇÃO: Muitos procedimentos cirúrgicos e endoscópicos bariátricos realizados atualmente diminuem o volume da luz gástrica de forma isolada ou associados a intervenção sobre o intestino. Uma forma de invaginação ou plicatura gástrica associada ao envolvimento protético do estômago foi usada para tratamento cirúrgico da obesidade. O procedimento foi abandonado devido à elevada taxa de complicações e re-intervenções causadas pelo contato da prótese com as vísceras abdominais. A fundoplicatura a Nissen usada para tratamento de refluxo gastroesofágico leva a emagrecimento pequeno, mas signific

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13

Dias, Andre Roncon. "Impacto da solução de Carnoy no número de linfonodos resgatados em peças cirúrgicas de câncer gástrico: estudo prospectivo randomizado." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/5/5168/tde-25112014-143416/.

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Introdução: O adenocarcinoma gástrico é uma doença de elevada incidência e alta mortalidade. A gastrectomia com linfadenectomia é tratamento potencialmente curativo, promovendo controle loco-regional da doença e fornecendo material para análise histopatológica. Para o adequado estadiamento dos pacientes é recomendado que pelo menos 16 linfonodos sejam examinados pela patologia, entretanto, espera-se maior sobrevida quando >= 30 linfonodos são avaliados, mesmo em pacientes com tumores precoces. A justificativa para este achado é o sub-estadiamento de pacientes com poucos linfonodos examinados.

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14

Borhan, Nazanin. "Budget allocation on differentially private decision trees and random forests." Thesis, 2018. http://hdl.handle.net/10453/135891.

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University of Technology Sydney. Faculty of Engineering and Information Technology.<br>Privacy-preserving techniques are necessary to minimize the possibility of identifying and learning sensitive information about individuals from any datasets that have been released or shared. Datasets containing sensitive information on individuals are becoming increasingly public. Although this will support data mining research, information privacy concerns need to be addressed. Many techniques have been developed to preserve the privacy of sensitive public data, with Differential Privacy (DP) being a lead

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15

Singh, Nikhil. "Distributed algorithms for resource allocation in multi-hop random access wireless networks /." 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3363092.

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Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2009.<br>Source: Dissertation Abstracts International, Volume: 70-06, Section: B, page: 3702. Adviser: R. Srikant. Includes bibliographical references (leaves 103-107) Available on microfilm from Pro Quest Information and Learning.

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You, Ji-Zheng, and 游基正. "Study of Reinforcement Learning for NB-IoT Random Access and Resource Allocation." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/95yjq7.

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碩士<br>國立中央大學<br>通訊工程學系<br>107<br>3rd Generation Partnership Project (3GPP) proposed NarrowBand Internet of Things (NB-IoT) based on Long Term Evolution (LTE) for IoT application in Release 13. It modifies and simplifies the LTE specification to let it be compatible with IoT devices and can coexist with existing LTE systems. In Release 14, the random access procedure can be supported in non-anchor carriers, which alleviate the problem that network congestion may occurs if UE can only random access via anchor carrier. The non-anchor carriers in uplink are used for data transmission. However,

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17

Ekin, Sabit 1981. "Random Subcarrier Allocation in OFDM-Based Cognitive Radio Networks and Hyper Fading Channels." Thesis, 2012. http://hdl.handle.net/1969.1/148142.

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Advances in communications technologies entail demands for higher data rates. One of the popular solutions to fulfill this requirement was to allocate additional bandwidth, which unfortunately is not anymore viable due to spectrum scarcity. In addition, spectrum measurements around the globe have revealed the fact that the available spectrum is under-utilized. One of the most remarkable solutions to cope with the under-utilization of radio-frequency (RF) spectrum is the concept of cognitive radio (CR) with spectrum sharing features, also referred to as spectrum sharing systems. In CR systems,

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18

劉美伶. "Random Contention Based Resource Allocation for QoS Concerned Mobile Wireless Body Area Network." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/95744056193227263694.

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碩士<br>國立交通大學<br>電子研究所<br>98<br>The mobile wireless body area network which is mainly applied to remote health care system provides the ubiquitous medical services of patients’ health monitoring beyond the confines of hospitals and clinics. For the monitoring of vital signals which is sensitive and important, the quality of service (QoS) should be considered to provide the critical level of operations. In this thesis, we propose a resource allocation scheme, random contention based resource allocation (RACOON) algorithm, for QoS concerned wireless body area network (WBAN). Besides of the qualit

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19

Wu, Yi-An, and 吳益安. "On Constellation Power Allocation over Gaussian Multiple Access Channel With Random Phase Offset." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/92762686001712069091.

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碩士<br>國立交通大學<br>電信工程研究所<br>104<br>Recently, non-orthogonal multiple access (NOMA) technology has been widely dis- cussed due to its better cell coverage and potentially higher user throughput than the traditional orthogonal multiple access (OMA) technology. In its implementation, user equipments (UEs) and the base station (BS) of NOMA are required to have an advanced interference cancellation capability in order to eliminate the signals generated by other users. In this thesis, we focus on the Constellation Power Allocation (CPA) transmission scheme and investigate its system performance over

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20

Xue, Guan-Yi, and 薛貫一. "Study of Random Access Scheme and Its Resource Adaptive Allocation in NB-IoT Network." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/gnrs29.

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碩士<br>國立中央大學<br>通訊工程學系<br>106<br>3rd Generation Partnership Project (3GPP) proposed NB-IoT for IoT application in Release 13. It improves the scheduling for uplink from original LTE which determines the length of NPUSCH (Narrowband Physical Uplink Shared Channel) by the number of subcarriers and slots in NB-IoT. This design supports the IoT scenario which have the feature of massive devices and short data transmission. In Release 14, 3GPP also proposes that random access procedures can be supported in non-anchor carriers which can ease the congestion if all the UE used random access resource b

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21

Chih-Hao, Su, and 蘇至浩. "Near Optimal Defense Resource Allocation and Information Dividing-and-Allocation Strategies to Minimize Information Leakage Considering both Random Errors and Malicious Attacks." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/19113779985732747071.

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碩士<br>國立臺灣大學<br>資訊管理學研究所<br>96<br>Information technology has been increasingly progressing, and the storage cost has been reducing. Thus, individuals, enterprises and government organizations are likely to store secret data through electronic way. Moreover, along with the rise of the use of network and the prevalence of e-commerce, the crime of information theft through network has grown in high-speed. Cyber crimes, like phishing or installing Trojan horse in victims’ computers to steal information, will cause serious damage to individuals or enterprises. From the above reasons, to protect sec

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Su, Chih-Hao. "Near Optimal Defense Resource Allocation and Information Dividing-and-Allocation Strategies to Minimize Information Leakage Considering both Random Errors and Malicious Attacks." 2008. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2607200817422600.

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23

Nandanwar, Sharad. "Recommendations in Complex Networks: Unifying Structure into Random Walk." Thesis, 2019. https://etd.iisc.ac.in/handle/2005/4950.

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Making recommendations or predicting links which are likely to exist in the future is one of the central problems in network science and graph mining. In spite of modern state-of- the-art approaches for link prediction, the traditional approaches like Resource Allocation Index, Adamic Adar still fi nd heavy use, because of their simplistic nature yet competitive performance. Our preliminary investigation reveals that a major fraction of missing links which are observed in the near future, are the links which are between one-hop distant nodes. Current \friend of friend is a friend" based

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24

"The generalized drop-the-loser rule for treatment allocation in multi-treatment clinical studies." Thesis, 2006. http://library.cuhk.edu.hk/record=b6074109.

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Complete randomized experimental design has been a popular standard in clinical trials due to its abilities to yield a smaller bias and to provide a strong foundation for statistical inferences. However, because of ethical issues, there is a growing demand for response adaptive designs which shift the allocation probabilities such that more patients receive the better treatment. The principal idea of response adaptive designs to allocate fewer patients to treatments which appears to be inferior based on the accruing response data and information collected up to the current stage. Although they

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Lavelle, Daniel Thor. "Protein sequence constraints." 2009. http://wwwlib.umi.com/dissertations/fullcit/3362848.

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26

Turnbull, Margaret. "Assessing the Regularity and Predictability of the Age-Trajectories of Healthcare Utilization." 2012. http://hdl.handle.net/10222/15441.

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This research examines the viability of a need-based approach that models the age-trajectories of healthcare utilization. We propose a fundamentally different way of treating age in modeling healthcare use. Rather than treating age as a need indicator, we refocus modeling efforts to predicting the age-trajectories of healthcare use. Using inpatient hospital utilization data from the Discharge Abstract Database, first, we model the age-trajectories of the rate of hospital use employing a common functional form. Second, we assess variation in these age-trajectories using growth curve modeling. T

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27

Kennington, Raymond William. "Random allocations: new and extended models and techniques with applications and numerics." Thesis, 2007. http://hdl.handle.net/2440/41885.

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This thesis provides a general methodology for classifying and describing many combinatoric problems, systematising and finding theoretical expressions for quantities of interest, and investigating their feasible numerical evaluation. Unifying notation and definitions are provided. Our knowledge of random allocations is also extended. This is achieved by investigating new processes, generalising known processes, and by providing a formal structure and innovative techniques for analysing them. The random allocation models described in this thesis can be classified as occupancy urn models, in

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Kennington, Raymond William. "Random allocations: new and extended models and techniques with applications and numerics." 2007. http://hdl.handle.net/2440/41885.

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This thesis provides a general methodology for classifying and describing many combinatoric problems, systematising and finding theoretical expressions for quantities of interest, and investigating their feasible numerical evaluation. Unifying notation and definitions are provided. Our knowledge of random allocations is also extended. This is achieved by investigating new processes, generalising known processes, and by providing a formal structure and innovative techniques for analysing them. The random allocation models described in this thesis can be classified as occupancy urn models, in wh

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29

Tanner, Matthew W. "New Solution Methods for Joint Chance-Constrained Stochastic Programs with Random Left-Hand Sides." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-05-404.

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We consider joint chance-constrained programs with random lefthand sides. The motivation of this project is that this class of problem has many important applications, but there are few existing solution methods. For the most part, we deal with the subclass of problems for which the underlying parameter distributions are discrete. This assumption allows the original problem to be formulated as a deterministic equivalent mixed-integer program. We rst approach the problem as a mixed-integer program and derive a class of optimality cuts based on irreducibly infeasible subsets of the constraints

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Moshksar, Kamyar. "Randomized Resource Allocaion in Decentralized Wireless Networks." Thesis, 2011. http://hdl.handle.net/10012/5807.

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Ad hoc networks and bluetooth systems operating over the unlicensed ISM band are in-stances of decentralized wireless networks. By definition, a decentralized network is com-posed of separate transmitter-receiver pairs where there is no central controller to assign the resources to the users. As such, resource allocation must be performed locally at each node. Users are anonymous to each other, i.e., they are not aware of each other's code-books. This implies that multiuser detection is not possible and users treat each other as noise. Multiuser interference is known to be the main factor that

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31

Hoy, Leslie Higham. "A proactive water supply shortage response plan focusing on the Green Industry in the Rand Water supply area." Diss., 2009. http://hdl.handle.net/10500/2647.

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Water is a symbol of life. It affects all organisms on earth and its importance is emphasised in times of drought. The human population growth places more demands on our natural resources. As pressures on the available water increases, more measures are required to utilise water sustainably. South Africa is classified as a water stressed country with less than 1700 cubic meters of water available per person per year. Rand Water supplies water to approximately 11 million people in Gauteng. During times of drought, restrictions imposed are aimed mainly at the broader Green Industry. This researc

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