Determination of competency framework for technical and vocational education and training (TVET) educators in Nigerian tertiary institutions

Lack of competent TVET Educators in Nigerian institutions has led to several problems such as low quality graduates and unemployment. Competency is a vital element for assessing the quality of technical and vocational education and training (TVET) Educators. Therefore, this research investigated the TVET Educators ’ perceptions on competency needs in Nigerian tertiary institutions based on Malaysian Human Resource Development Practitioners (MHRDP) competency model for workplace learning and performance (WLP). Apart from that, this study also aimed at investigating the perception differences on competency elements among difference TVET tertiary institutions in order to enhance their quality. The study was fully quantitative and 218 questionnaires were systematically distributed to the TVET educators from five tertiary institutions based on the stratified sampling technique. A total of 205 questionnaires were returned. Descriptive and inferential statistical methods such as mean, EFA and ANOVA were used to analyse the data. The research found that Nigerian TVET educators perceived all the competency elements (25 constituents) as important; 19 out 25 constituents of competency framework were significantly related to Nigerian tertiary institutions. The research findings also revealed that there was no statistically significant differences among the TVET educators perception on competency elements across different types of TVET tertiary institutions. The developed competency framework for Nigerian TVET tertiary institutions contributes originally to the body of knowledge. The research recommends that government and other relevant authorities should emphasize on the implementation of the framework to tertiary institutions in Nigeria. A similar research should be undertaken to extend the result to reflect other Non-TVET educators in Nigeria

The relationship between corporate governance attributes and firm performance

A number of studies, particularly in developed countries, had been carried out to explore the relationship between corporate governance and firm performance. Since, the value creation of corporate governance can be measured through the firm performance, corporate governance act as a mechanism to align management's goals with the stakeholders especially to increase firm performance. Despite extensive study of corporate governance there are still inconsistencies in the link between corporate governance and firm performance. Therefore, the aim of this research is to explore the relationship between corporate governance attributes and firm performance in Malaysia Public Listed Companies. To do so five corporate governance components was used as independent variables include: Independent director, board size, audit committee, leadership structure and board meeting. While the dependent variables are two firm performance measurements; return on equity (ROE) and earning per share (EPS). Based on a random stratified sampling eight hundred thirty one (831) listed companies from main board of Bursa Malaysia for the year 2009, 2010 and 2011 were selected as samples of the study. The data gathered from Annual Reports of the companies have been entered into Excel Spread Sheet, then were analyzed using Statistical Package for the Social Sciences (SPSS) program. Three types of data analyses have been performed; descriptive, T-test and Spearman correlation. The study discovered that, independent non-executive directors has an influence on earnings per share, board size has an influence on return on equity and earnings per share and also audit committee has an influence on earnings per share, leadership structure has an influence on return on equity and board meeting also has an influence on earnings per share. The results on the relationship between the firm performance and corporate governance mechanism suggest a positive relationship between return on equity and earnings per share as per the hypothesis testing. Therefore, the results also show that good corporate governance enforcement influence firm performance. Finally, no single theory offers a complete explanation of board characteristics-firm performance relationship, but rather rudiments of each theory can be seen to apply in different situations

Confinement of fermions in tachyon matter

In this paper we develop a phenomenological model inspired by QCD that mimics QCD theory. We use gauge theory in color dielectric medium ($G(\phi)$) coupled with fermion fields to produce scalar and vector confinement in chromoelectric flux tube scenario. Abelian theory will be used to approximate the non-Abelian QCD theory in a consistent manner. We will calculate vector and scalar glueballs and compare the result to the existing simulation and experimental results and projections. The QCD-like vacuum associated with the model will be calculated and its behavior studied relative to changing quark masses. We will also comment on the relationship between tachyon condensation, dual Higgs mechanism, QCD monopole condensation and their association with confinement. The behavior of the QCD string tension obtained from the vector potential of the model will be studied to establish vector dominance in confinement theories.Comment: 20 pages, 8 figures. Version published in AHE

The (de)-confinement transition in tachyonic matter at finite temperature

In this paper we present a QCD motivated model that mimics QCD theory. We examine the characteristics of the gauge field coupled with the color dielectric function ($G$) in the presence of temperature ($T$). The aim is to achieve confinement at low temperatures $T<T_{c}$, ($T_{c}$, is the critical temperature), similar to what occurs among quarks and gluons in hadrons at low energies. Also, we investigate scalar glueballs and QCD string tension and effect of temperature on them. To achieve this, we use the phenomenon of color dielectric function in gauge fields in a slowly varying tachyon medium. This method is suitable for analytically computing the resulting potential, glueball masses and the string tension associated with the confinement at a finite temperature. We demonstrate that the color dielectric function changes Maxwell's equation as a function of the tachyon fields and induces the electric field in a way that brings about confinement during the tachyon condensation below the critical temperature.Comment: 12 pages, 3 figures; version published in AHE

Position-Dependent Performance in 5 nm Vertically Stacked Lateral Si Nanowires Transistors

In this work, we investigated the performance of vertically stacked lateral nanowires transistors (NWTs) considering the effects of series resistance. Also, we consider the vertical positions of the lateral nanowires in the stack and diameter variation of the lateral NWTs as new sources of process variability

Does a Nanowire Transistor Follow the Golden Ratio? A 2D Poisson-Schrödinger/3D Monte Carlo Simulation Study

In this work, we observed the signatures of isotropic charge distributions showing the same attributes as the golden ratio (Phi) described in art and architecture, we also present a simulation study of ultra-scaled n-type silicon nanowire transistors (NWT) for the 5nm CMOS application. Our results reveal that the amount of mobile charge in the channel is determined by the device geometry and could also be related to the golden ratio (Phi). We also established a link between the main device characteristics, such as a drive and leakage current, and cross-sectional shape and dimensions of the device. We discussed the correlation between the main Figure of Merit (FoM) and the device variability and reliability

Simulation study of vertically stacked lateral Si nanowires transistors for 5 nm CMOS applications

In this paper we present a simulation study of vertically stacked lateral nanowires transistors (NWTs), which may have applications at 5nm CMOS technology. Our simulation approach is based on a collection of simulation techniques to capture the complexity in such ultra-scaled devices. Initially, we used drift-diffusion methodology with activated Poisson-Schrodinger quantum corrections to accurately capture the quantum confinement in the cross-section of the device. Ensemble Monte Carlo simulations are used to accurately evaluate the drive current capturing the complexity of the carrier transport in the NWTs. We compared the current flow in single, double, and triple vertically stacked lateral NWTs with and without contact resistance. The results presented here suggest a consistent link between channel strain and device performance. Furthermore, we propose a device structure for the 5nm CMOS technology node that meets the required industry scaling projection. We also consider the interplay between various sources of statistical variability and reliability in this work

Variability-Aware Simulations of 5 nm Vertically Stacked Lateral Si Nanowires Transistors

In this work, we present a simulation study of vertically stacked lateral nanowires transistors (NWTs) considering various sources of statistical variability. Our simulation approach is based on various simulations techniques to capture the complexity in such ultra-scaled device

The factors influencing municipal solid waste generation in bauchi town, Nigeria

This study investigated the factors influencing municipal solid waste generation (MSWG) in Bauchi town, the administrative headquarters of Bauchi state, Nigeria. The study used quantitative method, while experiments and questionnaire surveys, were used as the major instruments for data collection. Data on solid waste generation and the socioeconomic attributes of residents from 400 households were collected from residential zones within Bauchi town, the study area. Descriptive statistics, Correlations and Standard Multiple Regressions (SMR) were computed for data analysis using SPSS 2.2 software. Twelve (12) socioeconomic factors were computed in SMR to determine the significant factors of MSWG in the study. The results showed that five factors, namely: household size, income, education, house head age and occupation have exerted significant influence on MSWG in the study area. The results also showed that F (5:362) = 84.058 at p ≤ 0.01 and adjusted R² = 0.531; which indicated that the factors in the SMR model have sufficiently explained the variance in MSWG in Bauchi town. The study concluded that the five significant predictor factors have adequately explained the variance of MSWG in the study area. Therefore, the factors have implications for planning of effective waste management system in Bauchi town, Nigeria