41 research outputs found
Attitude of agricultural professionals towards their wards taking agriculture as a career in Kwara State, North Central Nigeria
No full textThe paper examines the attitude of agricultural professionals towards their children or people under their care taking agriculture and agricultural extension as a career in Kwara State, Nigeria. A structured questionnaire was used to elicit information from one hundred and eighty respondents. The findings revealed that the mean age of the agricultural professionals was 39 years. Majority (76.1%) were males, married (86.1%) with about an average of 5 wards each under their custody. Majority of the professionals were observed to have a negative and unfavourable attitude towards their wards taking agriculture as a career. Logistical regression modelling of determinants of agricultural professionals' attitudes towards their wards taking agriculture as a career revealed that characteristics of professionals that were more likely to have a positive attitude towards their wards taking agriculture as a career include high numbers of wards, higher educational qualification and more years of experience in the agricultural profession. The study recommends an urgent need for agricultural professionals to rise up to the task of ensuring increased participation of youths especially beginning with their wards in taking up a career in agriculture and agricultural extension
Topoisomerase II as a Novel Antiviral Target against Panarenaviral Diseases
No full textNagasaki University (長崎大学)博士(医学)Although many arenaviruses cause severe diseases with high fatality rates each year, treatment options are limited to off-label use of ribavirin, and a Food and Drug Administration (FDA)-approved vaccine is not available. To identify novel therapeutic candidates against arenaviral diseases, an RNA polymerase I-driven minigenome (MG) expression system for Lassa virus (LASV) was developed and optimized for high-throughput screening (HTS). Using this system, we screened 2595 FDA-approved compounds for inhibitors of LASV genome replication and identified multiple compounds including pixantrone maleate, a topoisomerase II inhibitor, as hits. Other tested topoisomerase II inhibitors also suppressed LASV MG activity. These topoisomerase II inhibitors also inhibited Junin virus (JUNV) MG activity and effectively limited infection by the JUNV Candid #1 strain, and siRNA knockdown of both topoisomerases (IIα and IIβ) restricted JUNV replication. These results suggest that topoisomerases II regulate arenavirus replication and can serve as molecular targets for panarenaviral replication inhibitors.長崎大学学位論文 学位記番号:博(医歯薬)甲第1523号 学位授与年月日:令和5年3月20日Author: Tosin Oladipo Afowowe, Yasuteru Sakurai, Shuzo Urata, Vahid Rajabali Zadeh, Jiro YasudaCitation: Viruses, 15(1), art. no. 105; 2022Nagasaki University (長崎大学), 博士(医学) (2023-03-20)doctoral thesi
Unintended consequences of arable crop technology within farming systems in Oyo state, Nigeria
No full text429-435To improve farmers’ production, researchers have developed some agricultural technology, which however produces several consequences, in the usage by farmers. Hence, an attempt was made to study the farmer’s perception of the consequences of arable crops technology in Oyo state. This was achieved through multistage random sampling (using questionnaire). PPMC was used to test the relationship between unintended consequences and some independent variables. It was discovered that benefits, adoption, social participation and contact with extension agents are significant while age and farm size are not significant. Multiple regression analysis of unintended consequences and independent variables shows that there is significant relationship between unintended consequences and independent variables. The most important predictor is adoption, frequency of meetings and cassava productivity
Adaptive sampling by histogram equalization: theory, algorithms, and applications, 2007
No full textWe present the investigation of a novel, progressive, adaptive sampling scheme. This scheme is based on the distribution of already obtained samples. Even spaced sampling of a function with varying slopes or degrees of complexity yields relatively fewer samples from the regions of higher slopes. Hence, a distribution of these samples will exhibit a relatively lower representation of the function values from regions of higher complexity. When compared to even spaced sampling, a scheme that attempts to progressively equalize the histogram of the function values results in a higher concentration of samples in regions of higher complexity. This is a more efficient distri-bution of sample points, hence the term adaptive sampling. This conjecture is confirmed by numerous examples. Compared to existing adaptive sampling schemes, our approach has the unique ability to efficiently obtain expensive samples from a space with no prior knowledge of the relative levels of variation or complexity in the sampled function. This is a requirement in numerous scientific computing applications. Three models are employed to achieve the equalization in the distribution of sampled function values: (1) an active-walker model, containing elements of the random walk theory, and the motion of Brownian particles, (2) an ant model, based on the simulation of the behavior of ants in search of resources, and (3) an evolutionary algorithm model. Their performances are compared on objective basis such as entropy measure of information, and the Nyquist-Shannon minimum sampling rate for band-limited signals. The development of this adaptive sampling scheme was informed by a need to effi-ciently synthesize hyperspectral images used in place of real images. The performance of the adaptive sampling scheme as an aid to the image synthesis process is evaluated. The synthesized images are used in the development of a measure of clutter in hyperspectral images. This process is described, and the results are presented
Attitude of agricultural professionals towards their wards taking agriculture as a career in Kwara State, North Central Nigeria
No full textThe paper examines the attitude of agricultural professionals towards their children or people under their care taking agriculture and agricultural extension as a career in Kwara State, Nigeria. A structured questionnaire was used to elicit information from one hundred and eighty respondents. The findings revealed that the mean age of the agricultural professionals was 39 years. Majority (76.1%) were males, married (86.1%) with about an average of 5 wards each under their custody. Majority of the professionals were observed to have a negative and unfavourable attitude towards their wards taking agriculture as a career. Logistical regression modelling of determinants of agricultural professionals’ attitudes towards their wards taking agriculture as a career revealed that characteristics of professionals that were more likely to have a positive attitude towards their wards taking agriculture as a career include high numbers of wards, higher educational qualification and more years of experience in the agricultural profession. The study recommends an urgent need for agricultural professionals to rise up to the task of ensuring increased participation of youths especially beginning with their wards in taking up a career in agriculture and agricultural extension.Keywords: Agricultural Professionals, attitude, career, agricultural extensio
Perceived Influence of Emerging Technologies on Lifelong Learning and Resilience among Women Who Dare Open Distance Learning
No full textPCF10 Sub-theme: Building Resilience // In this study, the authors investigated the influence of emerging technologies on lifelong learning and resilience among women who dare Open and Distance Learning in a dual mode tertiary institution in the South-West geo-political zone of Nigeria. The sample consisted of 431 female learners from the three available departments; Management Sciences, Social Sciences and Science Education. Both secondary and primary data were collected; the latter was collected using a questionnaire on Google Forms. The data were analysed descriptively and using the ordinary least squares regression with robust estimates of standard error. This latter method helps to overcome the possible econometric problems of serial correlation and heteroscedasticity in the model. Preliminary data shows that women enrolments over a period of ten years have consistently increased. Also, most learners were aware of the emerging technologies except technologies such as edublog.com, Edmodo, Weebly and Wiki spaces. The regression result shows that emerging technologies influenced lifelong learning and resilience of the women. Meanwhile, emerging technologies that influenced lifelong learning and resilience were Google classroom and Facebook only, while google drive posed a negative influence. Thus, more robust technologies, special female facilities and newly emerging technology job oriented fields should be introduced. // Paper ID 894
Coefficient inequalities and some convolution properties of a subclass of analytic functions
No full textIn this work the author introduced a subclass Tn∝(p,β), a subset of class Tn∝(β) introduced and investigated by Opoola [1]. The author derives some coefficient inequalities and convolution properties for the class. Tn∝(p,β) using Salagean differential operator. Journal of the Nigerian Association of Mathematical Physics Vol. 9 2005: pp. 49-5
Coefficient inequality for subclass of analytic univalent functions related to simple logistic activation functions
No full textThe author investigates the relationship between unified subclasses of analytic univalent functions and simple logistic activation function to determine the initial Taylor series coefficients alongside classical Fekete-Szegő problem.
Mathematics Subject Classification (2010): 30C45, 33E99
Certain inequalities and convolution properties for multivalent and meromorphically multivalent functions
No full textBy means of certain extended derivative operator of Salagean type, the author introduces and investigates three new subclasses of p-valently analytic functions. The reason for this is to use generalized Salagean derivative operator to bring together many earlier inroduced subclasses of p-valently functions to become special cases of the newly defined subclasses, see [2,8].The various results obtain for these functions include coefficient inequalities, coefficient bounds and convolution properties. These results coincides with many existing results using different choices of n and β JONAMP Vol. 11 2007: pp. 519-52
