Design, Fabrication and Performance Evaluation of a Domestic Dish Washing Machine

Plate washing is a daily activity across the globe which involves a lot of energy to accomplish manually or mechanically. The objective of this work is to design and fabricate a dish washing machine that is efficient and easy to operate. Stainless steel and mild steel was used for the construction of the machine considering their availability, cost reduction and corrosion resistance. The motor used a power of 0.75hp (559.5 W), voltage of 240V and a speed of rotation of “1200 r.p.m” which was reduced to “100 r.p.m” using a reduction gear of velocity ratio (V.R) “12:1”, the shaft torque being “53.4 N-m”. The plates were washed and rinsed in a separate basin using a liquid detergent and clean water following appropriate measure per cycle. Detailed design drawings of all the machine parts were drawn using AutoCAD. The performance analysis of the machine shows that the number of plates washed and the time taken were 20 plates per minute (1min), 5 plates per minute for the machine and manual operation respectively. The capacity of the machine is 20 plates per minute (1880 per hour). The machine washes plates without breakages.Keywords: Washing machine; motor; transformer; gear, plates; detergen

An Investigation of Users’ Acceptance and Satisfaction of E-Banking System as a Panacea towards a Cashless Economy in Nigeria

The benefits of e-banking have been established as being numerous and its success has been argued by many researchers to depend partly on the quality of the banking services but more especially on customer preferences and satisfaction. Surprisingly, as numerous as these e-banking benefits are, very long queues could still be seen in many Nigerian banks for the consumption of the traditional banking services of fund transfer, cash deposits and cash withdrawals. However, to prove the success of e- banking in Nigeria, users’ acceptance and satisfaction of the system need to be validated. Many research works had been conducted using the Technology Acceptance Model (TAM), an information system theory that models how users come to accept and use a technology, to pzredict and explain users’ acceptance of e-banking. TAM poses two theoretical constructs; perceived usefulness (PU) and perceived ease of use (PEOU) as fundamental determinants of user’s acceptance of an information system. This research work examines the factors that may influence users’ acceptance and satisfaction of e- banking in Nigeria by adding the impact of perceived credibility (PC) and trust to the TAM constructs (PU and PEOU) with four other external variables (convenience, quality of technology, service quality and system accessibility) in extending its validity on examining user’s acceptance and satisfaction of e-banking system in Nigeria as a panacea towards operating a cashless economy. The result of the hypothesis testing using Pearson chi square is consistent with previous studies which showed that there is a significant relationship in the predicted direction on intention to use information system (IS)

Semantic Text Mining using Domain Ontology

Abstract— Presently in Customer Relationship Management, there is a need to achieve greater customer centricity, and this requires a deeper understanding of customer needs. Also, the volume of textual data generated by the social networking sites in recent times has greatly increased, creating a platform for analysis, towards the much needed customer understanding. One of the issues that evolve from analyzing these texts to retrieve non trivial patterns (text mining) is text representation, which this research is aimed at addressing. In particular, this paper focuses on using domain ontology for text pre-processing in order to improve the quality of the textual corpus being mined. The methodology used in this research is based on developing a domain Ontology for textual pre-processing of the experimental data and sentiment analysis of social media data. In conclusion, the inferences gotten from the research carried out reveal that domain ontology has the ability to improve the results of sentiment analysis. It was also discovered that, due to the nature of social media data, there is need for a deeper level of semantic analysis, to be able to maximize its richness

Potentials of microorganisms associated with plantain peels in the Lagos metropolis for biodegradation and bioconversion.

The role of microbes in the degradation of plantain derived-wastes and their potential to produce cellulolytic enzymes was assessed. Soil samples of decomposing waste piles were collected from two major plantain markets in the Lagos metropolis and analyzed for physicochemical properties, toxic heavy metal content and microbial populations. Findings revealed that the values of moisture content of the two soils varied between 7.27±0.04 and 8.06±0.19 %. M-12 site had the highest organic matter content of 6.89±0.14 %. A similar pattern was observed for nitrate, phosphate and chloride levels while some heavy metals were also detected in varying and high amounts. The highest viable bacterial counts was 58.0±2.9 x 104 cfu/g at MU and there were no fungi at the site whereas M-12 had a fungal count of 40.0±3.3 x 103 cfu/g. Out of the total of 34 isolates encountered, 8 isolates having maximum cellulase activities were selected for further studies by the primary screening technique. These test organisms were then evaluated by secondary screening for enzyme production. The test organisms were phenotypically and biochemically characterized and identified as Klebsiella pneumoniae spp pneumoniae (2 strains), Klebsiella pneumoniae spp ozaenae, Enterobacter aerogenes, Providencia alcalifaciens, Aspergillus flavus, Aspergillus fumigatus and Aspergillus niger respectively. Both the bacteria and moulds were found to be capable of utilizing lignin and cellulosic substrates for growth and for production of cellulolytic enzymes. It is suggested that such microorganisms could be useful in bioconversion of cellulosic substrates like plantain-derived wastes for biotechnological application

Biological sample donation and informed consent for neurobiobanking: Evidence from a community survey in Ghana and Nigeria

Copyright: \ua9 2022 Singh et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Introduction Genomic research and neurobiobanking are expanding globally. Empirical evidence on the level of awareness and willingness to donate/share biological samples towards the expansion of neurobiobanking in sub-Saharan Africa is lacking. Aims To ascertain the awareness, perspectives and predictors regarding biological sample donation, sharing and informed consent preferences among community members in Ghana and Nigeria. Methods A questionnaire cross-sectional survey was conducted among randomly selected community members from seven communities in Ghana and Nigeria. Results Of the 1015 respondents with mean age 39.3 years (SD 19.5), about a third had heard of blood donation (37.2%, M: 42.4%, F: 32.0%, p = 0.001) and a quarter were aware of blood sample storage for research (24.5%; M: 29.7%, F: 19.4%, p = 0.151). Two out of ten were willing to donate brain after death (18.8%, M: 22.6%, F: 15.0%, p<0.001). Main reasons for unwillingness to donate brain were; to go back to God complete (46.6%) and lack of knowledge related to brain donation (32.7%). Only a third of the participants were aware of informed consent (31.7%; M: 35.9%, F: 27.5%, p<0.001). Predictors of positive attitude towards biobanking and informed consent were being married, tertiary level education, student status, and belonging to select ethnic groups. Conclusion There is a greater need for research attention in the area of brain banking and informed consent. Improved context-sensitive public education on neurobiobanking and informed consent, in line with the sociocultural diversities, is recommended within the African sub region

Globalisation, adjustment and the structural transformation of African economies?: the role of international financial institutions

Under the auspices of the World Bank and IMF, for almost two decades, sub-Saharan African countries have implemented structural adjustment, an orthodox package of economic reform measures. During this period there has been an unprecedented proliferation of technology investment and trade in the world economy. However sub-Saharan Africa has performed poorly under adjustment and has been largely marginalized from the international economy. The paper investigates the problems with the theoretical model underlying structural adjustment policies to explain why the model is not conducive to either African development or Africa’s increasing participation in the global economy. An example is used to illustrate the existence of an alternative set of policies that may be better suited for Africa

The Role of Ethnic Directors in Corporate Social Responsibility: Does Culture matter? The Cultural Trait Theory Perspectives

This paper investigates the effect of cultural differences between ethnic directors on corporate social responsibility (CSR) of Public Liability Companies (PLCs) in Nigeria. Using the cultural trait theory, the study focuses on how the ethnic directors are influenced when making decisions concerning CSR. Adopting multiple regression analysis of data, the study investigates the three major ethnic groups (Yoruba, Igbo and Hausa) and finds cultural differences between the ethnic directors affect the adoption of CSR. Empirical results indicate that ethnic directors (Yoruba, Igbo and Hausa) were positively and significantly related to CSR. The paper contributes to the corporate governance and CSR debate concerning how ethnic directors’ decisions impact on CSR activities, particularly on the directors who are individualistic and collectivists towards CSR

Narcissism and the strategic pursuit of short-term mating : universal links across 11 world regions of the International Sexuality Description Project-2.

Previous studies have documented links between sub-clinical narcissism and the active pursuit of short-term mating strategies (e.g., unrestricted sociosexuality, marital infidelity, mate poaching). Nearly all of these investigations have relied solely on samples from Western cultures. In the current study, responses from a cross-cultural survey of 30,470 people across 53 nations spanning 11 world regions (North America, Central/South America, Northern Europe, Western Europe, Eastern Europe, Southern Europe, Middle East, Africa, Oceania, Southeast Asia, and East Asia) were used to evaluate whether narcissism (as measured by the Narcissistic Personality Inventory; NPI) was universally associated with short-term mating. Results revealed narcissism scores (including two broad factors and seven traditional facets as measured by the NPI) were functionally equivalent across cultures, reliably associating with key sexual outcomes (e.g., more active pursuit of short-term mating, intimate partner violence, and sexual aggression) and sex-related personality traits (e.g., higher extraversion and openness to experience). Whereas some features of personality (e.g., subjective well-being) were universally associated with socially adaptive facets of Narcissism (e.g., self-sufficiency), most indicators of short-term mating (e.g., unrestricted sociosexuality and marital infidelity) were universally associated with the socially maladaptive facets of narcissism (e.g., exploitativeness). Discussion addresses limitations of these cross-culturally universal findings and presents suggestions for future research into revealing the precise psychological features of narcissism that facilitate the strategic pursuit of short-term mating

Global patient outcomes after elective surgery: prospective cohort study in 27 low-, middle- and high-income countries.

BACKGROUND: As global initiatives increase patient access to surgical treatments, there remains a need to understand the adverse effects of surgery and define appropriate levels of perioperative care. METHODS: We designed a prospective international 7-day cohort study of outcomes following elective adult inpatient surgery in 27 countries. The primary outcome was in-hospital complications. Secondary outcomes were death following a complication (failure to rescue) and death in hospital. Process measures were admission to critical care immediately after surgery or to treat a complication and duration of hospital stay. A single definition of critical care was used for all countries. RESULTS: A total of 474 hospitals in 19 high-, 7 middle- and 1 low-income country were included in the primary analysis. Data included 44 814 patients with a median hospital stay of 4 (range 2-7) days. A total of 7508 patients (16.8%) developed one or more postoperative complication and 207 died (0.5%). The overall mortality among patients who developed complications was 2.8%. Mortality following complications ranged from 2.4% for pulmonary embolism to 43.9% for cardiac arrest. A total of 4360 (9.7%) patients were admitted to a critical care unit as routine immediately after surgery, of whom 2198 (50.4%) developed a complication, with 105 (2.4%) deaths. A total of 1233 patients (16.4%) were admitted to a critical care unit to treat complications, with 119 (9.7%) deaths. Despite lower baseline risk, outcomes were similar in low- and middle-income compared with high-income countries. CONCLUSIONS: Poor patient outcomes are common after inpatient surgery. Global initiatives to increase access to surgical treatments should also address the need for safe perioperative care. STUDY REGISTRATION: ISRCTN5181700