Development of a diagnostic schedule for a defective LC-195V5 CNC Milling machine using PERT

Computer Numerical Control CNC machine tools usage are more and more extensive, its fault diagnosis research is becoming more essential. Failure forms accorded these machines are diversified, and fault reasons are very complicated. It should not be left unattended to, because this could lead to further deterioration. One of the parameters used in determining the efficiency of a technician (who repairs machine tools) is the time saved in locating faults, hence the development of a diagnostic schedule which shows the sequential means of troubleshooting within a possible shortest time. In this research two approaches were used to diagnose a defective LC-195V5 CNC milling machine. Forward Pass (FP), which involves the diagnosis from electrical parts through Computer (CNC) to mechanical component and Backward Pass (BP) which involves the diagnosis from computer component through electrical parts to mechanical parts. Three different trials were conducted for each of the mode of diagnosis and the time to diagnose each component part was recorded. Based on the interrelationship of the component parts, two separate PERT (Project Evaluation & Review Techniques) network diagrams were drawn and their Critical Paths were determined. The study reveals that Foward Pass method was able to save more time

Organizational Culture and Performance A case study of Covenant University, Nigeria

Every organization has set objectives that mark its essence of existence, the achievement or otherwise of these objectives is dynamically subject to the aptitudes, learning, capacity and the fundamental trademark representing the organization. The basic trademark here dives genuinely deep into the continuing piece of the organization: the qualities and convictions administering its individuals. This study aims at examining how the aggregate qualities, convictions and standards of the people in an organization generally affect the organization’s ability to meet and surpass its set objectives. This conceptual paper breaks down the achievement of Covenant University, Nigeria, which in spite of the challenging Nigerian business environment described by absence of foundations, infrastructure, unfavorable government strategies, and high inflation rate, has seen huge development and improvement in the twelve years of presence as displayed by its position as the number one University in Nigeria and 15th in West Africa according to the 2015 Webometrics Rankings of Universities. It is observed that the success of the University is as a result of the core values of the organization, which has trickled down from the entrepreneur to every level of management, teaching and non-teaching staff and which is duly enforced on the students of the University

Sexual Violence Against Female Students in Polytechnics in South-West Nigeria

Sexual violence against women is a social vice that affects females in diverse forms across clime, race and religion. This manifests through sexual assault, rape, sexual harassment, incest, sexual exploitation, stalking and cyber stalking. Out of all these, sexual assault, rape and sexual harassment of female students by male lecturers are common in the tertiary institutions. There is no doubt that sexual violence is indeed a global problem, but it becomes worrisome when lecturers now demand sex  from their female students   in return for good grades in their courses. This educational epidemic erodes academic integrity and dignity, thus making certification an exercise in falsehood. This study investigated the causes of sexual violence against female students by male lecturers in polytechnics, the consequences of the act on the victims as well as the polytechnic system; and how the horrid act can be controlled in South–West Nigeria. The six states that make up this axis are: Oyo, Osun, Ondo, Ogun, Lagos and Ekiti. The sampled population comprised 1800 female students and 900 adults-both male and female, selected from 17 Federal, State and Private Polytechnics in the six states. The purposive sampling technique was used to select the female students, the adults as well as the polytechnics that participated in the study. The responses were collated and analysed using simple frequencies and percentages because the study was a descriptive survey research. The study revealed that sexual violence against female students was a reality in polytechnics in South-West Nigeria. The male lecturers who indulged in the act did so mainly, to exercise their power and authority over the female students. To control the callous act, some punitive and preventive measures were recommended. These will enable all members of the various academic communities to perceive sexual violence as an inhuman act which every sane person should avoid. Keywords: Violence, Sexual violence, Female students, Consequences and Control

Understanding the drivers of children’s nature knowledge, attitudes and perceptions and the implications for the future of Nigeria’s biodiversity

This work was aimed at determining the drivers of children’s nature knowledge, attitudes and perceptions (KAP) of biodiversity in Plateau  State, North-central Nigeria. We used a mixed methods approach in data collection, including interviews, photo displays and semi- structured oral interviews. Simple frequency tests were used in data analyses. Two hundred and ten pupils participated in the study.Results revealed three main drivers of children’s nature KAP, these were: 1. the need for sustenance/provisioning. 2. Protection and safety and 3. Fear of the unknown due to a lack of proper knowledge about an organism. Also, indirect nature experiences were the most  predominant sources of knowledge (watching television programs and wildlife documentaries (21%), and from reading books 16%). Learning involved a variety of sources including family members, peers and personal interest in nature. We conclude that children’s nature KAP is driven mainly by survival, and a deficit of direct nature experiences, and that ignorance, emanating a deficit of nature  experiences  and a lack of understanding and awareness of the existing local wildlife are major factors driving fear and apathy. We suggest more  deliberate, proactive steps that ensure children have direct engagements with nature. Parents, teachers, and schools and indeed every stakeholder need to be more proactive in  ensuring that nature education and direct nature experiences are highlighted and deliberately celebrated and taught to children if they are to become effective custodians of our future biodiversity

Technology Acceptance and Usage: A Catalyst for Better Performance of the 21st Century SMEs in Nigeria

In recent times the use of technology in businesses has become very vital, especially in SMEs that are the mainstream of enterprises operating in the world. The adoption and use of Technology can be of benefit in terms of competence, usefulness, advancement, growth and competitive advantages. Various scholars and managers have examined the contribution of technology to business growth, and a positive influence has been acknowledged. However, the effective implementation and use of technology by small businesses has been below expectations, it thus becomes questionable the depth of understanding SMEs in Nigeria have of the role of technology in their performance. This study, thus seeks to determine the details affecting the acceptance and use of Technology by SMEs in Nigeria. This was done using an in depth review of literature to determine the elements that stimulate the acceptance and use of technology and its impact on organizations. From the literature reviewed, it was discovered that SME owners have intentionally failed to embrace technology and programs that can easily improve the fortunes of their enterprises. This study highlighted that for better performance of SMEs, it is important to support organizational and useful procedures with technology tools; and adequate circumstances that favor the best technology implementation. It was concluded that in the recent world of business, there is a relationship between a firm’s capacity to use technology efficiently and its ability to implement business procedures and to attain business goal

An Analysis of Institutional Environments on Corporate Social Responsibility Practices in Nigerian Renewable Energy Firms

Several studies have proposed a one-size fit all approach to Corporate Social Responsibility (CSR) practices, such that CSR as it applies to developed countries is adapted to developing countries, ignoring the differing institutional environments (such as the regulative, economic, social and political environments), which affects the profitability and practices of businesses operating in them. CSR as it applies to filling institutional gaps in developing countries, was categorized into four themes: environmental protection, product and service innovation, social innovation and local cluster development. Based on the four themes, the study employed a qualitative research approach through the use of interviews and review of available publications to study the influence of institutional environments on CSR practices engaged in by three renewable energy firms operating in Nigeria. Over the course of three 60-minutes sessions with the top management and selected workers of the firms, four propositions were made: regulatory environment influences environmental protection practice of Nigerian renewable firms, economic environment influences product and service innovation practice of Nigerian renewable energy firms, the social environment impacts on social innovation in Nigerian renewable energy firms, and political environment affects local cluster development practice of Nigerian renewable energy firms. It was also observed that beyond institutional environments, the international exposure of an organization’s managers reflected in their approach to CSR. This finding on the influence of international exposure on CSR practices creates an area for further study. Insights from this paper are set to help policy makers in developing countries, CSR managers, and future researcher

Ethnobotanical knowledge of children in selected communities in plateau state, Nigeria: Drivers of children’s plant knowledge and the conservation implications for the future of biodiversity

The study was conducted to assess the ethnobotanical knowledge of primary school children in six selected communities of Plateau State, Nigeria and to determine the drivers of their knowledge including methods of knowledge acquisition and transmission. Six different rural communities from Plateau State Nigeria were  selected for the study; two schools in each community (total, 156 respondents). Data was collected through a mixed methods approach, using focus group plant identification exercise, picture identification activity, and oral interviews. Data was analyzed using simple descriptive statistics and frequencies. Results revealed that children had a relatively low knowledge of plants (30.3%), although this was mostly indigenous plants. A greater  proportion (40.6 %) of children held no ethnobotanical knowledge, 19.5 % could identify both exotic and  indigenous plants, while a further 9.6% identified only exotic species. Furthermore, the results revealed that parents, mostly mothers were the major transmitters of plant knowledge. We conclude that children’s ethnobotanical knowledge of plants was relatively low, and that there is a need to deliberately encourage local involvement of children in practical plant learning activities to help improve their plant knowledge if they are to become effective and knowledgeable custodians and stewards of our future biodiversity

Creating Shared Value: A Paradigm Shift from Corporate Social Responsibility to Creating Shared Value

Businesses operating in the modern business world are faced with varying challenges; amongst which is the need to ensure that they are performing their societal function of being responsible in the society in which they operate. This responsibility to society is generally termed as corporate social responsibility. For many years, the practice of corporate social responsibility (CSR) was solely philanthropic, where organizations gave ‘charity’ or ‘alms’ to society, without any link to the organization’s mission and objectives. However, there has arisen a shift in the application of CSR from an act of philanthropy to a strategy with a business model engaged in by organizations to create a win-win situation of performing their societal obligation, whilst simultaneously performing their economic obligation. In more recent times, the term has moved from CSR to creating shared value, which is simply corporate policies and practices that enhance the competitiveness of a business organization while simultaneously advancing social and economic conditions in the communities in which the company operates. Creating shared value has in more recent light found more meaning in underdeveloped countries, faced with deep societal challenges that businesses can solve whilst creating economic value. This study thus reviews literature on CSR, conceptualizing the shift to creating shared value and finally viewing its potential significance in Africa’s development

The Schrodinger equation with Hulthen potential plus ring-shaped potential

We present the solutions of the Schr$\ddot{o}$dinger equation with the Hulth$\acute{e}$n potential plus ring-shape potential for $\ell\neq 0$ states within the framework of an exponential approximation of the centrifugal potential.Solutions to the corresponding angular and radial equations are obtained in terms of special functions using the conventional Nikiforov-Uvarov method. The normalization constant for the Hulth$\acute{e}$n potential is also computed.Comment: Typed with LateX,12 Pages, Typos correcte

Effect of Piper guineensees on physicochemical and organoleptic properties of watermelon (Citrulus lanatus) juice stored in refrigerator and ambient

Extracted juice from watermelon containing 0.01gPiper guineensesstored in refrigerator (6±2 oC) and on the shelf (28±1oC) usingpolyethylene bottles was evaluated for physicochemical and organoleptic changes. pH, total soluble sugars, titratable acidity and organolepticevaluation of the juice was carried out till deterioration sets in. Results showed that the sample stored in therefrigerator kept for 7 days while the sample on the shelf lasted for 3 days. pH value decreased from 5.40 to 4.80 and 5.70 for the samplestored in the refrigerator and on the shelf respectively while TSS increased from 0.064%Brix to 0.435% Brix and 0.578%Brix for sample stored in refrigerator and shelf respectively. Titratable acidity decreased from 2.90 % to 0.20% and 0.50% for samples for the juice stored in the refrigerator and on shelf respectively.All these changes were statistically significant (p<0.05).The sample stored on the shelf lost its organoleptic qualities on the third day with an average value less than 2 for taste, smell and colour. However, the juice stored in the fridge lost its organoleptic qualities at the 7th day with an average value of 3.0, 2.90 and 2.80 for taste, smell andcolour respectively.  From the results, juice extracted from water meloncannot be kept at ambient temperature beyond 3 days without proper refrigeration and an additive. This calls for alternative way of extending its shelf life in the absence of electricity supply using local spice like P. guineenses and to make it available during off season