Aminu Usman Ahmad - Academia.edu (original) (raw)

Papers by Aminu Usman Ahmad

Earthline Journal of Chemical Sciences

Schiff base ligand derived from condensation of 2-aminothiophenol and 2‑thiophenecarboxyldehyde w... more Schiff base ligand derived from condensation of 2-aminothiophenol and 2‑thiophenecarboxyldehyde was synthesized and used for the preparation of Ni(II) and Cd(II) complexes. The synthesized ligand and complexes were analyzed by decomposition temperature, solubility, magnetic susceptibility, molar conductance and infrared spectra. The decomposition temperatures of the complexes are 212 and 221°C. Molar conductance values are 16.12 and 12.60 ohm-1cm2mol-1 respectively. New bands appeared in the IR spectra of the complexes in the range of 519 - 475 cm-1 and 462 - 448 cm-1 which indicate υ (M - N) and υ (M - S) vibrations respectively. Magnetic susceptibility measurement indicated that Ni (II) complex is paramagnetic whileCd(II) complex is diamagnetic. The solubility test revealed that all complexes and ligand are soluble in DMSO. The analytical data show the formation of 2:1 metal to ligand ratio for all complexes and suggested the formula [ML2].nH2O. The ligand and metal chelates have ...

Journal of Electronics,Computer Networking and Applied Mathematics

A large number of connected smart objects and sensors, as well as the establishment of seamless d... more A large number of connected smart objects and sensors, as well as the establishment of seamless data exchange between them, have been made possible by the Internet of Things (IoT) technology's recent rapid development. As a result, there is a high demand for platforms for data analysis and data storage, such as cloud computing and fog computing. IoT makes it possible to customize apps for older persons as well as for rapidly expanding markets that must modify their products to match the preferences of their customers. This study suggests a framework for a decision-support system and a protected health monitoring system using IoT data collected from senior residents' homes. The study intends to provide security to the users’ data from the point of acquiring of the data to the relaying of the data to cloud and to the alert generation using blockchain technology. Further research should focus on key management and security, as well as the capability to easily replace lost or co...

International Journal of Tourism Cities

Purpose The purpose of this paper is to examine the effect of measures to combat Corona Virus Dis... more Purpose The purpose of this paper is to examine the effect of measures to combat Corona Virus Disease 2019 (COVID-19) pandemic on competitiveness in tourism in Nigeria taking strategic dexterity as the moderating variable. Design/methodology/approach Survey research design approach was used for the study. A total of 235 valid questionnaires gathered from the personnel of ten urban tourist centres in Nigeria were used to examine the goodness of model fit, measurement model and structural correlations between constructs. Partial least squares structural equation modelling approach (PLS-SEM) using Advanced Analysis for Composite (ADANCO 2.2.1) was used to evaluate the hypotheses. Findings This study finds that travel restriction, boarder closure and strategic dexterity were significant to competitiveness, among which border closures has generated the highest path coefficient. Moreover, the study finds a significant moderating role of strategic dexterity between travel restrictions, bor...

Document Engineering, Sep 16, 2014

MULTIDISCIPLINARY JOURNAL OF VOCATIONAL EDUCATION & RESEARCH, Sep 25, 2021

International Journal of Chemical Studies, 2021

Investigation of coagulant of Moringa oleifera, alum and activated carbon mixture (matrices) in w... more Investigation of coagulant of Moringa oleifera, alum and activated carbon mixture (matrices) in well water treatment were carried out on well water of Kofar Gabas of Jahun. In this work water quality assessment test, jar test were carried out. It was noted that there is general reduction in TDS values, and they are all within WHO recommended range i.e. (˂ 300mg/L). There is decrease in pH values for the whole matrices used below the WHO recommended of 6.5-8.5, since MO is in high percentage in all matrices. Low TDS values and average conductivity as well as closeness of pH values to recommended range given by WHO, made matrix B best of three matrices prepared.

The International Journal of Management, 2019

In an increasingly competitive environment, little is acknowledged on how competitiveness in diff... more In an increasingly competitive environment, little is acknowledged on how competitiveness in different industries is driven by their technology resource strategy and the plan that guides the growth and exploitation of technological resources. The aim of this study is to examine the relationship between technology resource strategy and competitiveness in Nigerian telecommunication industry. The methodology used for this was review of related literature on the conceptsof technology resource strategy and competitiveness. It has been established within the literature reviewed that the three dimensions of tangible and intangible technology resource strategy (manpower, machine and method) and competitiveness are significantly related. In this study, proposed model has been developed to explore the relationship between technology resource and competitiveness. However, the model needs to be elaborated and developed through systematic research. This studyhas help to strengthen the body of kn...

Electronic-marketing moves commercial banks from traditional marketing into digital marketing whi... more Electronic-marketing moves commercial banks from traditional marketing into digital marketing which gives them a competitive edge over others in the same industry. In spite of the numerous advantages of e-marketing, there is a growing concern about the payoff of the investments (value for money) as to whether it will be useful to banks in boosting their revenue generation and enhance their competitive advantage. Therefore, the main objective of this study is to examine the relationship between e-marketing adoption and banks’ competitive advantage. To achieve this objective, Technology Acceptance Model (TAM) was used with two additional variables (Perceived Value for Money and Service Differentiation) integrated into it, to form the conceptual model. The study was conducted using the entire 17 commercial banks branches in Bauchi metropolis, Nigeria. Census survey method was used with a total valid 221 respondents which involved the staff of all the commercial banks. The results of th...

TesisEl propósito principal del trabajo de investigación, titulado “Bilingüismo y comprensión lec... more TesisEl propósito principal del trabajo de investigación, titulado “Bilingüismo y comprensión lectora en estudiantes del primer grado de educación secundaria de la I. E. “Divino Maestro” Tambo - Ayacucho, 2016” es determinar si existe una relación entre las dos variables de estudio. Es una investigación de enfoque cuantitativo, el tipo y nivel descriptivo correlacional. La muestra estuvo conformada por 48 estudiantes del primer grado, sección “A” y “B” de educación secundaria de la Institución Educativa “Divino Maestro” del distrito de Tambo, provincia de La Mar, región de Ayacucho; el tamaño muestral se eligió de una forma intencional, no probabilística. Los instrumentos de recojo de datos, se aplicó la prueba de comprensión lectora con dos textos que miden los niveles de comprensión literal, inferencial y crítico; también, la guía de observación, para ubicar los niveles de bilingües incipientes, subordinados y coordinados, respectivamente. El análisis de datos se realizó mediante el método estadígrafo Rho de Spearman a través de tablas para el contraste de las hipótesis entre las variables del estudio y su respectiva interpretación de los datos. Los resultados obtenidos expresó que el valor de alfa calculada es inferior al valor del nivel de significancia (αc=0,000<0,05), lo que significó que existió una correlación entre las dos variables de estudio, y por el valor de correlación de 0,530 se dedujo que esta correlación fue moderada. En consecuencia, se acepta la hipótesis alterna y se rechaza la hipótesis nula, y se comprobó la validez de la hipótesis general; es decir, existió una relación directa entre el bilingüismo y la comprensión lectora en los estudiantes del primer grado de educación secundaria de la Institución Educativa “Divino Maestro” de Tambo - La Mar, Ayacucho 2016

Global Journal of Information Technology: Emerging Technologies, 2018

Nowadays, the application or acceptance of mobile learning in teaching and conducting research an... more Nowadays, the application or acceptance of mobile learning in teaching and conducting research and other academic activities have been successful in developed and some developing countries of the world and have proven to be more efficient than the customary learning systems. Most of students and academia in these developed nations have embraced mobile technology because of its simplicity, flexibility and also provide opportunity for students and academia to collaborate with one another irrespective of their geographical location for research purposes. Few literatures suggest that the level of technology acceptance in the country is still very low compared to other parts of European and some Asian countries. However, findings of the quantitative analysis and collected works have also shown that students and academia hesitant to embrace mobile computing technology is one of the most significant factors that affect the level of mobile learning in most African countries. Keywords: Mobil...

International Journal of Management in Education, 2017

To develop greater interest in enterprise start-up, efficient corporate management among adults a... more To develop greater interest in enterprise start-up, efficient corporate management among adults and effective enterprise finance strategy among policy-makers, this study was conducted to examine the level of awareness of crowd-funding model and its effect on entrepreneurial intentions among Nigerian university lecturers. With a survey, data were collected from 217 lecturers at three universities in north, east and west regions of Nigeria. Employing descriptive statistics and partial least square (Smart PLS-SEM) methods, data were analysed. Among others, we found that most of the lecturers were not aware of crowd-funding as a novel model for enterprise financing. We also discovered that crowd-funding has a significant positive relationship with entrepreneurial intentions. Therefore, it was recommended that the government and university management should draft appropriate 368 I. Ekpe et al. strategies (e.g. inclusion in syllabus) that will engender greater awareness and adoption of crowd-funding, especially among entrepreneurial educators and students, for enterprise creation and development in the country.

This analysis examines the influence of corporate reputation on performance of banking industries... more This analysis examines the influence of corporate reputation on performance of banking industries in Kano state NorthWest of Nigeria. A survey with 384 qualified observations from financial institutions' customers in Kano was conducted. Partial Least Squares (PLS-SEM) was used as an alternative to covariance-based SEM, which provides researcher with some flexibility in terms of model complexity and relationship specification.. The model shows corporate reputation that is a reflective construct that has a significant direct effect on performance. The results, besides indicating the suitability of the PLS in statistical analysis, has also contributed to a better understanding of Banking customer in Kano which hitherto has not been tested. Findings are useful for policy makers, management of banking industries and practitioners to enhance corporate reputation, Implications for research and practice and future recommendations are discussed.

International Journal of Computer Applications, 2014

As the amount of data and information received and sent electronically increases in various Small... more As the amount of data and information received and sent electronically increases in various Small and Medium Enterprises, companies and organizations, the adoption of cloud Database as a Service is becoming popular in the global business community. The operational burden encountered by users of Traditional Database Systems (TDS), such as configuration, provisioning, performance tuning, scalability, privacy and security, backup and access control, are transferred by Database as a Service to the service provider/operator. This offers lower hardware and software costs, remote online access to databases and reliable applications. Despite all the benefits of Database as a Service, security and privacy issues of the cloud database can present significant challenges. With the increase of unauthorized access to confidential data in the cloud, this paper presents encryption techniques that provide strong security against attacks using Transparent Data Encryption (TDE). To protect the confidentiality of the cloud database, TDE is used to transparently encrypt and protect data at rest, on hard disk, in transit and on backup media. TDE is effective, easy and provides high security levels to columns, tables and table space for data that require protection. This paper studies the performance of encryption algorithms (AES128, AES192, AES256 and 3DES168) with regard to CPU time, execution time and elapsed time. AES128 is found to have a better performance than other encryption algorithms.

International Journal of Technology Diffusion, 2010

Despite growing academic and practical concerns about IT-transformed workplaces, little research ... more Despite growing academic and practical concerns about IT-transformed workplaces, little research empirically investigates these concerns. This paper adopts a unique approach to address these concerns by evaluating the appropriateness of traditional drivers of career salience in high IT working environments. Building on established measures of role stress, participation in decision making, job involvement and career salience, questionnaires were distributed to staff working in high IT organizations in Nigeria. Multiple regressions were run from a valid response of 223, resulting in the three traditional drivers accounting for 25% of the variance in career salience. Similarly, standardized ß coefficients indicate on job involvement (0.46) makes unique significant contribution to career salience. This finding is in line with sociotechnical theory—that changes in technical sub-system affect the social sub-system and vice versa. The finding also provides indirect exploratory support for ...

Despite the growing importance of technology management on organizational competitiveness, there ... more Despite the growing importance of technology management on organizational competitiveness, there is dearth of well developed research instruments to enable organizations examine the specific and generic effects of technology resource constructs on their performance. Hence, the research aims to address this gap via developing and testing instrument. Focus group analysis and extensive literature search led to the development of three technology resource and two competitiveness factors respectively. A total of 500 questionnaires were distributed to professionals across Nigerian Broadcasting Industry out of which 357 were returned. However, after removing substantially unfilled responses and morbidity cases, only 311 were considered fit for further analysis. Principal Component Factoring was run among all the proposed (20) technology resource items (Machinery 07, Manpower 06, and Method 07). KMO measure of sampling adequacy (0.920); Bartlette's tests of sphericity (0.000) anti-image correlation (0.776-0.958) support the factorability of the data. The result supports a three factor solution accounting for over 56% of the variance on technology resource. Similarly, analyses of unidimensionality, convergent, discriminant and nomological validity as well as reliability suggest the robustness of the developed scales. Finding of the study provide preliminary evidence to support the meaningfulness and appropriateness for using the three technology resource constructs in explaining the variance of organizational competitiveness not only in broadcasting industry, but also in other technology permeated industries.

ijbhtnet.com

... Aminu Ahmad, Ph.D Management &amp; Information Technology Programme, School of Manage... more ... Aminu Ahmad, Ph.D Management &amp; Information Technology Programme, School of Management Technology Abubakar Tafawa Balewa University PMB 0248 ... These factors collectively underscore the pervasive nature of technology and the need for its formal management. ...

Journal of Tropical Pediatrics, 2008

Rotaviruses (RV) are associated with »33 000 deaths in children _5 years of age annually in Niger... more Rotaviruses (RV) are associated with »33 000 deaths in children _5 years of age annually in Nigeria. However, limited data exit on RV infection in northwestern Nigeria. During July 2002 to July 2004, 1063 (869 diarrhoeic and 194 control) stool samples were collected from children _5 years of age presenting with diarrhoea in northwestern Nigeria. The stools were analysed for RV antigen and further characterized by antigenic and genomic methods. RV was detected in 18% of children with diarrhoea and 7.2% of the age-matched case controls. The highest RV burden was detected in children _6-months-old. Long electropherotypes and VP6 subgroup I 1 II specificity predominated.