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Wyświetlanie 1-8 z 8
Tytuł:
G6PD Activity in Malaria Infected Children in Owerri
Autorzy:
Ihenetu, Francis C.
Nwachukwu, Michael I.
Ohalete, Chinyere N.
Njoku-Obi, Treasure Njideka
Nwachukwu, Ogechi I.
Okoro, Chinyere I.
Okereke, Bright Chinemerem
Ihenetu, Stanley Chukwuemeka
Powiązania:
https://bibliotekanauki.pl/articles/1113925.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Children
G6PD
Malaria
Plasmodium falciparum
Plasmodium malarae
Opis:
This paper is a study of G6PD activity in malaria-infected children in Owerri. Blood samples were collected from fifty-one (51) children hospitalized in the Federal Medical Center (FMC) and analyzed using standard Medical Laboratory methods. Results revealed that out of the 51 children examined (26 males and 25 females), 39, representing 76.47% of the total malaria infected children numbers, were G6PD deficient, while 12, representing 23.53%, had normal G6PD. Two different plasmodium species and their percentage occurrences were observed. These were: Plasmodium falciparum (78.43%) and Plasmodium malariae (21.57%). The work indicated that male children were more (P < 0.05) deficient than females, with percentage levels of 61.53% and 38.47%, respectively. In addition, children between the ages of 49-60 months was observed to be more (P < 0.05) G6PD deficient (with percentage of 25.64%), while those between 0-12 months were least G6PD deficient (with percentage of 8.3% (P < 0.05)). As being afflicted with malaria carries a high risk of Glucose-6-phosphate dehydrogenase (G6PD) deficiency in children, there is, therefore, urgent need for public enlightenment on public health implications, need for proper hygiene, as well as a need for strategies for preventing and controlling mosquito populations
Źródło:
World News of Natural Sciences; 2017, 12; 63-72
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the binary classification problem in discriminant analysis using linear programming methods
Autorzy:
Olusola, Michael O.
Onyeagu, Sydney I.
Powiązania:
https://bibliotekanauki.pl/articles/406591.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
binary classification
discriminant analysis
error rate
hit rate
linear programming
Opis:
This paper is centred on a binary classification problem in which it is desired to assign a new object with multivariate features to one of two distinct populations as based on historical sets of samples from two populations. A linear discriminant analysis framework has been proposed, called the minimised sum of deviations by proportion (MSDP) to model the binary classification problem. In the MSDP formulation, the sum of the proportion of exterior deviations is minimised subject to the group separation constraints, the normalisation constraint, the upper bound constraints on proportions of exterior deviations and the sign unrestriction vis-à-vis the non-negativity constraints. The two-phase method in linear programming is adopted as a solution technique to generate the discriminant function. The decision rule on group-membership prediction is constructed using the apparent error rate. The performance of the MSDP has been compared with some existing linear discriminant models using a previously published dataset on road casualties. The MSDP model was more promising and well suited for the imbalanced dataset on road casualties.
Źródło:
Operations Research and Decisions; 2020, 30, 1; 119-130
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Poverty and its alleviating strategies among rural farming households in Benue state, Nigeria
Autorzy:
Upev, S.K.
Onu, J.I.
Mshelia, S.I.
Michael, A.
Powiązania:
https://bibliotekanauki.pl/articles/2080940.pdf
Data publikacji:
2021
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
poverty
alleviating strategies
rural
farming household
Nigeria
Opis:
The study analysed rural farming households’ poverty status and alleviating strategies in Benue State, Nigeria. The specific objectives of the study were to: describes the rural household heads’ socio-economic characteristics; determine the poverty status of the respondents and its determinants; and identify poverty alleviating strategies of the respondents. Data for the study was collected from 420 respondents selected using a multi-stage sampling technique. Data collected were analysed using descriptive statistics, the Foster-Greer-Thorbecke poverty measurement index, and the Binary Logistic regression model. The findings of the study revealed a very high incidence of poverty (70%), having a gap of 0.34, and severity of 0.17. Poverty in the area is positively associated with the age of the household head and household size, while gender, educational level, off-farm activity, membership of a group, farm size, and land ownership are negatively associated with poverty. The common poverty alleviation strategies identified were agricultural wage labour (48.6%), rental services (45.0%), and transportation business (36.7%). Therefore, it was recommended that the government and other stakeholders should initiate sustainable social protection schemes that can assist rural residents in alleviating poverty until their condition improves.
Źródło:
Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Problemy Rolnictwa Światowego; 2021, 21[36], 2; 33-44
2081-6960
Pojawia się w:
Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Problemy Rolnictwa Światowego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Economic consequence of human - hippopotamus (Hippopotamus amphibious) conflicts on farming Livelihood in rural Adamawa State, Nigeria
Autorzy:
Lumbonyi, C.A.
Michael, A.
Lumbonyi, I.A.
Boni, P.G.
Powiązania:
https://bibliotekanauki.pl/articles/29430922.pdf
Data publikacji:
2023
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Źródło:
Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Problemy Rolnictwa Światowego; 2023, 23[38], 1; 19-31
2081-6960
Pojawia się w:
Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Problemy Rolnictwa Światowego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Deterministic chaos and forecasting in Amazon?s share prices
Autorzy:
Hanias, Michael
Tsakonas, Stefanos
Magafas, Lykourgos
Thalassinos, Eleftherios I.
Zachilas, Loukas
Powiązania:
https://bibliotekanauki.pl/articles/22444422.pdf
Data publikacji:
2020
Wydawca:
Instytut Badań Gospodarczych
Tematy:
time series
chaos theory
econophysics
forecasting
Opis:
Research background: The application of non-linear analysis and chaos theory modelling on financial time series in the discipline of Econophysics. Purpose of the article: The main aim of the article is to identify the deterministic chaotic behavior of stock prices with reference to Amazon using daily data from Nasdaq-100. Methods: The paper uses nonlinear methods, in particular chaos theory modelling, in a case study exploring and forecasting the daily Amazon stock price. Findings & Value added: The results suggest that the Amazon stock price time series is a deterministic chaotic series with a lot of noise. We calculated the invariant parameters such as the maxi-mum Lyapunov exponent as well as the correlation dimension, managed a two-days-ahead forecast through phase space reconstruction and a grouped data handling method.
Źródło:
Equilibrium. Quarterly Journal of Economics and Economic Policy; 2020, 15, 2; 253-273
1689-765X
2353-3293
Pojawia się w:
Equilibrium. Quarterly Journal of Economics and Economic Policy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On Decomposing Regular Graphs Into Isomorphic Double-Stars
Autorzy:
El-Zanati, Saad I.
Ermete, Marie
Hasty, James
Plantholt, Michael J.
Tipnis, Shailesh
Powiązania:
https://bibliotekanauki.pl/articles/31339115.pdf
Data publikacji:
2015-02-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
graph decomposition
double-stars
Opis:
A double-star is a tree with exactly two vertices of degree greater than 1. If $T$ is a double-star where the two vertices of degree greater than one have degrees $k_1+1$ and $k_2+1$, then $T$ is denoted by $S_{k_1,k_2}$. In this note, we show that every double-star with $n$ edges decomposes every $2n$-regular graph. We also show that the double-star $S_{k,k−1}$ decomposes every $2k$-regular graph that contains a perfect matching.
Źródło:
Discussiones Mathematicae Graph Theory; 2015, 35, 1; 73-79
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance Evaluation of the Threshold Call Admission Policy in Multi-rate Loss Systems
Autorzy:
Moscholios, Ioannis D.
Chousainov, Iskanter-Alexandros
Panagoulias, Panagiotis I.
Sarigiannidis, Panagiotis G.
Logothetis, Michael D.
Powiązania:
https://bibliotekanauki.pl/articles/308675.pdf
Data publikacji:
2020
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
blocking
congestion
convolution
product form
quasi random
random
Opis:
In this paper we consider a link, characterized by specific capacity, that services multi-rate random or quasirandom traffic. Random traffic is generated by an infinite number of traffic sources, while quasi-random traffic is generated by a finite population of traffic sources. The link is modeled as a multi-rate loss system. Handover and new calls are distinguished. New calls compete for the available bandwidth under a threshold call admission policy. In that policy, a new call of a particular service-class is not allowed to enter the system if the in-service handover and new calls of the same service-class plus the new call, exceed a predefined threshold (which can be different for each service-class). On the other hand, handover calls compete for the available bandwidth based on the complete sharing policy. We show that the steady state probabilities in the proposed models have a product form solution (PFS). The PFS leads to a convolution algorithm for accurate calculation of congestion probabilities and link utilization.
Źródło:
Journal of Telecommunications and Information Technology; 2020, 2; 51-60
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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