Yobe State University

This study examines the effect of intellectual capital and corporate governance on the firm value of listed non-financial companies in Nigeria over the period 2014–2023. Anchored on the Knowledge-Based View and Agency Theory, the study employs panel data from 56 firms listed on the Nigerian Exchange Group and applies fixed effects regression techniques to control for unobservable firm-specific heterogeneity. Intellectual capital is measured using the Value Added Intellectual Coefficient (VAIC) framework, decomposed into human capital efficiency, structural capital efficiency, and relational capital efficiency, while firm value is proxied by Tobin’s Q. Corporate governance mechanisms include board size, board independence, board meetings, board financial expertise, gender diversity, and ownership concentration. The results reveal that intellectual capital, particularly human capital efficiency, exerts a positive and statistically significant effect on firm value, underscoring the strategic importance of knowledge-based resources in emerging economies. Relational capital exhibits a weak positive effect, while structural capital is insignificant. Among governance mechanisms, board gender diversity is the only attribute with a positive and significant influence on firm value. The findings suggest that intellectual capital and inclusive governance structures play complementary roles in enhancing firm valuation. The study contributes to the limited Nigerian literature by providing long-term empirical evidence on the joint impact of intellectual capital and corporate governance on firm value and offers policy-relevant insights for regulators, managers, and investors.

Abstract The research work assessed the Geographical Study of Rural —Urban Migration in local government area of Damaturu Yobe State in Nigeria, the objectives of the study include; To scrutinize the push and pull factors responsible for the migration in Damaturu town, To analyze the major economic benefit derive from migratory group, To compare the positive and negative effect of migration at the origin (rural) and destination (urban). The research presented the remote effects of rural-urban migration on rural development. This study has been able to cover new growth which was hitherto neglected by government. In other to achieve the objectives of the study, data was collected from primary sources using questionnaire. the data obtained were collected and were summarized as absolute frequencies and proportion using the simple descriptive percentage method. The study revealed that from the study area, 20% of the respondents are for poverty, 44% of the respondent are for insecurity, 16% of the respondents are for better life, 21% of the respondents are for education. Also from the data obtained from the respondents on the economic benefit 61% of the respondents are for the good job opportunity, 38% of the respondent are for development active group, finally, on ways to compare the positive and negative effect of migration at the origin (rural) and destination (urban) 50% of the respondents are for over population, 24% of the respondent are for insecurity while 25% of the respondents are for outbreak of disease. finally, the study concluded that the rural-urban migration and rising urban unemployment and under-employment between rural economic and social and opportunities to curb rural-urban migration, rural areas are isolated areas of an open country low population density. Keywords: Population, Migration, Urban, Rural, Environment, Community, Development.

This research investigates the sedimentological properties of sandstones of the Kerri-Kerri Formation exposed around Potiskum and environs. The study aimed to evaluate the textural characteristics, depositional environment, and sedimentary processes that influenced the sedimentation of the formation. Field mapping and sampling were carried out with the selection of 10 representative samples used for the granulometric analysis was carried out using sieve method. Statistical parameters, including mean grain size, sorting, skewness, and kurtosis were determined using the different methods outlined by previous researchers. The results revealed that the sandstones are predominantly coarse to medium grained, poorly sorted, and mostly positively skewed with leptokurtic to mesokurtic distributions. These features indicate deposition under moderate to high fluvial environments. Sedimentary structures such as massive bedding and biogenic burrows further support a fluvial deposition setting influenced by periodic current variations. The study concludes that the Kerri-Kerri Formation sandstones in Potiskum were deposited mainly in a fluvial system with minor deltaic and lacustrine influences. The findings contribute to understanding the sedimentary evolution of part of the Nigerian sector of the Chad Basin and provide baseline data for future geological and resource investigations in the area.

Tau undergoes fibrillogenesis in a group of neurodegenerative diseases, termed tauopathies. Each tauopathy is characterized by tau fibrils with disease-specific conformations, highlighting the complexity of tau self-assembly. This has led to debate surrounding the precise mechanisms that govern the self-assembly of tau in disease, especially the involvement of disulfide bonding (DSB) between cysteine residues. In this study, we use a truncated form of tau, dGAE, capable of forming filaments identical to those in disease. We reveal the impact of DSB on dGAE assembly and propagation by resolving the global mechanisms that dominate its assembly. We found evidence of surface-mediated secondary nucleation and fragmentation being active in dGAE assembly. The inhibition of DSB during dGAE assembly leads to an enhanced aggregation rate through a reduced lag phase but with no effect on the global assembly mechanisms. We suggest this is due to the formation of a dominant, seed-competent species in the absence of DSB that facilitates elongation and secondary nucleation, resulting in enhanced assembly. In vitro seeding assays reveal the recruitment of endogenous tau in a cell model only when using dGAE species formed under conditions that inhibit DSB. Our results further support the use of the in vitro dGAE tau aggregation model for investigating the mechanism of tau assembly, show the effect of varying conditions on tau assembly, and how these conditions affect the resultant species. Further studies may utilize dGAE and its aggregates to investigate tau seeding, propagation, and to highlight or test potential targets for therapies that reduce the spread of pathological tau throughout the brain.

The purpose of this study was to examine the relationship between social media usage and academic performance of undergraduate students of Sule Lamido University Kafin Hausa. The study was guided by sixteen objectives with three research questions and thirteen hypotheses. The study adopted Social Learning Theory by Albert Bandura (1977) and Student Involvement Theory by Alexander W. Astin (1984). The study adopted correlation and survey research designs. The target population was 5,321 undergraduate students of Sule Lamido University, Damaturu. The sample size was 273 participants. Instrument used to collect data for this study was the Social Media Usage Questionnaire (SMUQ). The Questionnaire items was validated by seven validators. Expert judgment method was used to calculate the validity index and the validity index was found 0.7. Cronbach's Alpha was used to determine the reliability coefficient of the questionnaire and items was found to be reliable at 0.86. The data were analysed using frequencies, percentages, Pearson Product Moment Coefficient (PPMC) and independent samples t-test. Findings showed that: WhatsApp is the most commonly use social media site followed by Facebook, Twitter, Instagram, YouTube and Wikipedia. Level of students' usage to social media types was rarely. Undergraduate students of Sule Lamido University use to spend 0-1 hour in a day on social media sites. Some of the reasons for students' usage of social media sites are; learning purpose, communication and interaction, socialisation and leisure; business, politics and regious activities. There was a significant relationship between the use of Facebook, WhatsApp and academic performance of students. It was also revealed that there was no significant relationship between the use of Twitter, Instagram, YouTube, Wikipedia and academic performance of students. There was a significant gender difference in the use of Facebook, WhatsApp and academic performance of students. There was no significant gender difference in the use of Twitter, Instagram, YouTube, Wikipedia and academic performance of students. The study concludes that, the lecturers, school guidance counselor and parents in particular should collaborate and monitor the behaviour of students towards the use of social media sites. The study recommends the introduction of guidance and counselling specifically meant for social media affairs at the University to help in the mitigation of the social media issues that influence students learning.

Researchers increasingly recognise Artificial Intelligence (AI) as a transformative force in organisational management, yet Small and Medium Enterprises (SMEs) face unique challenges in adopting these technologies. This study examines the administrative challenges and strategic pathways involved in adopting AI in SMEs. The research team used a qualitative design and collected data through semi-structured interviews, focus group discussions, and document reviews with SME administrators across multiple sectors.Findings reveal four significant administrative challenges: financial constraints, skills deficits, organisational resistance to change, and policy uncertainty. These barriers restrict SMEs' ability to integrate AI technologies effectively. However, SMEs demonstrate resilience through strategic pathways, including incremental adoption of AI solutions, staff training and capacity building, partnerships with technology providers and research institutions, and collective advocacy for policy support. The study highlights that AI adoption is not merely a technical process but a complex administrative and institutional phenomenon shaped by leadership readiness, organisational culture, and external policy environments.The study concludes that effective AI adoption requires a dual approach: strengthening internal organisational strategies while ensuring supportive external institutional frameworks.

This study examines the mediating role of Shariah compliance in the acceptance of Islamic credit cards (ICCs) among customers in Malaysia. The primary objective is to assess how customer knowledge, perceived financial cost, and perceived advantage influence the acceptance of ICCs, and whether these relationships are mediated by perceptions of Shariah compliance. A quantitative research approach was adopted, involving the collection of survey data from 220 ICC users. Data were analysed using Partial Least Squares Structural Equation Modelling (PLS-SEM) to evaluate both direct and indirect relationships. The empirical findings indicate that perceived advantage and Shariah compliance exert significant direct effects on ICC acceptance, while customer knowledge and financial cost do not exhibit direct statistical significance. Notably, Shariah compliance significantly mediates the relationships between all three independent variables and ICC acceptance. These results emphasize the pivotal role of Shariah compliance in shaping customer acceptance of Islamic financial products. The study contributes to the theoretical discourse on Islamic customer behaviour and offers practical insights for financial institutions aiming to enhance the adoption of Shariah-compliant credit products in Malaysia.

Pollinators play vital ecosystem services to crops and wild plants, supporting agricultural land and producing worldwide food crops. This study aimed to assess insect pollinators' biodiversity in Yobe State, Nigeria. Using the line transect method, a field Survey was conducted fortnightly for one year in Dachia, Amshi, Kazir, Karage, Paga, and Damaturu communities. Four Temporary Sample Plots (TSP) of size 50×50 m were laid along each transect at a 250 m interval. A total of 349 insect pollinators belonging to 7 orders, 9 families and 13 species were collected and recorded during the sampling period, with Order Hymenoptera being the most dominant (74.83 %) in the dry season and (45 %) in the rainy season while Hemiptera represent the least (2.73 %) in dry seasons and (1.48 %) in the raining seasons, respectively. Similarly, more insect pollinators were observed in Amshi communities (20.30 %) in the rainy season and (17.00 %) in the dry season, while in Dachia (19.80 %) in the rainy season and (21.09 %) in the dry season, respectively. There was no significant difference (3.15) in insect distribution and diversity between sampling sites and species in the rainy season and (4.17) in the dry season in Amshi, while (3.08) in the rainy season and (5.17) in the dry season in Dachia, respectively. The results could be helpful for baseline information for further research on insect diversity, the relative abundance of beneficial and harmful insects, and the control of insect pests in the study areas.