Miracle-dz/UniFAR-FTUs huggingface dataset:
An analysis of transformational leadership, talent acquisition and talent retention of engineers at an energy provider in South Africa

Orientation: Scholars long debated the importance of transformational leadership, talent acquisition and talent retention.Research purpose: The purpose of this study was to analyse transformational leadership, talent acquisition and talent retention of engineers at Eskom by investigating the demographic differences, relationships and transformational leadership as the mediating variable.Motivation for the study: Eskom has improved the remuneration of engineers over the years but continued encountering challenges to attract and retain them. The researcher investigated whether the perceived lack of transformational leadership caused the challenges experienced by the organisation.Research approach/design and method: This was quantitative study, which used convenience-sampling method to obtain 585 completed questionnaires from the engineers.Main findings: The researcher performed a one-way Anova test to establish if engineers from a gender and educational qualification perspectives were different from each other on the eight sub-factors identified through exploratory factor analysis. The p-values were greater than 0.05, meant that there was no statistical difference between genders and between engineers with different educational qualifications. The researcher conducted a post-hoc pairwise test (p-values 0.05) on different age groups and results revealed that older respondents (31 – 40 years of age) had greater positive attitude on the perception of before-selection, during-selection and development than the younger group (18 – 30 years of age). In addition, the study revealed that transformational leadership mediated the relationship between talent acquisition and retention of engineers.Practical/managerial implications: The study emphasises that not only salaries are important to attract and retain engineers, but also effective leadership is essential, especially the transformational leadership philosophy.Contribution/value-add: South Africa has a dearth of engineers. The study results illustrates the importance of transformational leadership philosophy in addressing the challenge the organisation faces. Therefore, the organisation must consider designing programmes to help leaders embrace the transformational leadership philosophy.
A Novel Blockchain-Based Authentication and Access Control Model for Smart Environment

A R T I C L E I N F O A B S T R A C T Article history: Received: 28 November, 2020 Accepted: 18 January, 2021 Online: 05 February, 2021 With the increase of smart factories and smart cities following the recent 4th industrial revolution, internal user authentication and authorization have become an important issue. The user authentication model using the server-client structure has a problem of forgery of the access history caused by the log manipulation of the administrator and unclearness of the responsibility. In addition, users must independently manage the authentication method for each service authentication. In this paper, to solve the above problem, the researchers propose an integrated ID model based on a hybrid blockchain. The proposed model is implemented as two layers of Ethereum and Hyperledger Fabric: the former layer is responsible for integrated authentication, and the latter layer is responsible for access control. The physical pass or application for user authentication and authorization are integrated to one ID through the proposed model. In addition, the decentralized blockchain ensures the integrity and transparency of the stored access history, and it also provides non-repudiation of authority and access history.
Expanding hospital infrastructures: boundary resources for peripheral actors

Fostering innovation while maintaining a traditional IT infrastructure is challenging. We have conducted a qualitative study in the health sector, following three ICT-related innovation initiatives in a hospital. The innovators sought to connect the new solutions with the complex hospital digital infrastructure but the governance regime was not conducive to experimental development. We describe the challenges of relating to the existing information infrastructure and thereby identify the requirements for innovative projects to be sustained. In our analysis we zoom-in on the problematic “meeting points” between the innovation initiatives and the pre-existing infrastructure, as these reveal which capabilities and resources are required for the existing infrastructure to accomodate novelty. Conceptually, we frame these as boundary resources. Our study contributes a concrete description of the resources that are required if large, entrenched infrastructures shall be able to harness innovation.
The Notion of Strategy in Facilities Management

Facility Management (FM) is changing the way we work, create and share information, plan, and organize the flow of people, ideas, and things around business. Strategic FM is all about managing the firm to achieve benefits. Strategy implementation is still complex despite previous research describing mechanisms related to the construction of strategy and strategy use by FM organizations. This article attempts to fill this gap by examining strategy. Since strategy refers to a complex network of thoughts, insights, experiences, expertise, and expectations that provide general guidance for management action, organizations must keep pace with the changing environment to increase market shares and business success. Based on a literature review, the findings of this study report a service-strategy classification grid. Such a service-strategy grid provides for a better understanding of the business environment. The study findings are intended to enhance business managers’ understandings of the issues behind FM strategy. Together these elements can maximize the impact of strategic FM on economic growth of any company.
Research on the influence of air-gap eccentricity on the temperature field of a motorized spindle

Abstract. The air-gap state between the stator and rotor is an important indicator to measure the performance of a motorized spindle. It affects the temperature field distribution of the motorized spindle and the machining accuracy of the mechanical parts. Since the accurate thermal model is the basis of the research on the temperature field distribution of the motorized spindle, in this paper, firstly, the mechanical loss, electrical loss and magnetic loss of the motor under different air-gap eccentricities are calculated and the heat-generating power of an angular-contact ball bearing is obtained based on Harries contact theory. Secondly, the thermal model of the motorized spindle is established and the steady-state temperature field of the motorized spindle is simulated by using ANSYS, and the influence of air-gap eccentricity on the temperature field of the motorized spindle is discussed. Finally, the circumferential temperature field distribution of the motorized spindle with the air-gap eccentricity is verified by experiment. The results show that the air-gap eccentricity has a significant influence on the non-uniform temperature field of the motorized spindle.
ANALYSIS OF SENSORY MARKETING ON CONSUMERS AT RETAIL STORES

In order to be forever etched in the minds of customers, Retail Store owners use Sensory Marketing techniques to provide a holistic experience to them at stores. How much a product or service is perceived by a customer is referred to as a sensory experience. The experience of a customer in a store has a huge impact on their buying decision and the image that the customer has of the company. In order to provide an experience that stays with the customers, retailers use techniques to influence the sensory experience of customers in a store. These experiences are results of external stimuli to our senses of touch, taste, sight, smell and hearing. This paper aims to study the factors that impact the holistic experience of consumers at a store. It aims to understand which sensory experience is of utmost importance to a customer in terms of providing a holistic sensory experience. An effort is also done to identify and assess the holistic sensory experience of Indian retail industry customers, as well as to determine their understanding of sensory marketing strategies used in such retail shops. Keyword: Retail Industry India, Sensory Marketing, Retail stores, Sensory experience.
Evaluation of Non-economic and Economic Incentives in Promoting Teachers’ Creativity and Innovativeness (TCI)

This study analyzed the influence of various incentive mechanisms on teachers’ creativity and innovativeness. One hundred twenty-eight (128) teachers from Partido Area participated the study. Researcher-made perception survey, which was validated and reviewed by experts, was the main tool used to gather the needed data. Weighted mean, percentage, t-test, chi-square test, and Fishers’ exact test were used as statistical tools to give meaning on the values obtained. The result showed that teachers are generally creative but are less innovative. Among the incentive mechanisms given to teachers, professional development support and plus factor given in Individual Performance Rating have significant relationship to teachers’ creativity. On the other hand, non-economic incentives such as awards and gifts are the incentive mechanisms that have significant relationship to teachers’ innovativeness. The study also revealed that there is no significant relationship between teachers’ profile and creativity; however, the same cannot be said with innovation. It is therefore recommended that economic and non-economic incentive mechanisms that enhance the intrinsic motivation of teachers should be designed and implemented.
Moderated Mediation: The Impact of Heuristic Representativeness Bias on Investment Decision-Making

The purpose of the existing study is to examine the influence of heuristic representativeness bias (HRB) on investment decision-making (IDM) by moderated mediation of external locus of control (ELC) and risk tolerance (RT) in the Pakistan Stock Exchange (PSX). A convenient sampling technique was used for the collection of research data from 385 individual stock investors. Results reveal that RT mediates the association between HRB and IDM. Besides, this study findings also indicate that the association between HRB and IDM is moderated mediated by ELC and RT. Meanwhile, the study outcomes entitlements that ELC reinforces the effect of HRB on investors' risk-taking proclivity that enable them in investment decisions.
CHEMICAL EVALUATION OF FRESH AND ENSILED WATER HYACINTH (Eichhornia crassipes (Mart.)) AS FEED FOR RUMINANTS

The nutrient profile, phytochemical composition, and silage quality of water hyacinth (WH) were determined and compared to Napier grass (NG), a common forage in ruminant diets. Ensiling improved the nutrient profile of WH and NG because of the significantly higher (P<0.05) dry matter (DM) and crude protein (CP) and significantly lower (P<0.05) neutral detergent fiber (NDF) and moisture content (MC) of ensiled WH (EWH) and ensiled NG (ENG). Ether extract (EE) values were not significantly different (P>0.05). Qualitative phytochemical analyses indicated the presence of flavonoids and cardiac glycosides in WH, NG, EWH, and ENG. Tannins were present only in WH and NG however only ENG and NG contained saponins. Ensiled WH had pH values of 3.61 to 3.91 and lactic acid concentrations of 94.33 to 125.48 g/kg DM indicating good silage quality. Furthermore, EWH had better CP (11.07%) and NDF (47.37%) than WH (9.23% CP, 55.26% NDF), NG (6.21% CP, 71.02% NDF) and ENG (7.95% CP, 58.73% NDF) which most likely will favor better ruminal fermentation in ruminants. Therefore, based on these properties, EWH has the best potential as a substitute for NG in the Philippines.
Expression profiling and pathway analysis of iron oxide nanoparticles toxicity on human lung alveolar epithelial cell line using microarray analysis

Toxicogenomics is a developing area searching for cellular pathways and mechanisms including cancer, immunological diseases, environmental responses, gene-gene interactions and drug toxicity. Nanoparticles (NPs) become important candidates for analyzing in toxicogenomic experiments because of their unusual properties in various biological activities. Therefore, we examined the nanotoxicity of iron oxide (Fe2O3) on gene expression profiling of human alveolar epithelial cells (HPAEpiC) in the study. For this aim, iron oxide nanoparticles were synthesized by zone melting method and characterized via using X-ray crystallography (XRD) and transmission electron microscope (TEM) techniques. Cell viability and cytotoxicity were determined by 3-(4,5-dimethyl-thiazol-2-yl) 2,5-diphenyltetrazolium bromide (MTT), neutral red (NR) and lactate dehydrogenase (LDH) release tests. Whole-genome microarray expression analysis was performed to explore the effects of iron oxide nanoparticles on gene expression in cultured human alveolar epithelial cells. For further analyses, these genes were functionally classified by using DAVID (The Database for Annotation, Visualization and Integrated Discovery) with gene ontology (GO) analysis. The results from this study indicated that iron oxide-mediated toxicity directly or indirectly affecting the regulation of cell proliferation, response to hormone stimulus, estrogen stimulus, cytokine activity and blood circulation by stimulating diverse genes.
Possible Effects of Sweet Potato Leaves, Roots and their Mixture Feeding on Alloxan-Induced Diabetic Ratsm

The present study was designed to study the effect of sweet potato (Ipomoea batatas, L.) leaves, roots and their mixture on diabetic rats. Forty eight adult male albino rats were used in this study, weighting (15010g) were divided into eight groups, six rats each. Sweet potato leaves, roots and their mixture as powder were added at percent 2.5 % and 5% from the main diet for 28 days. Diabetic rats were induced alloxan subcutaneously injection (150 mg/kg body weight). Serum lipid profiles (TG, TC, LDL-c, VLDL-c, HDL-c), serum glucose, liver enzymes activities (ALT, AST and ALP) and kidney functions (creatinine, uric acid and urea levels) were also determined. From the obtained results it could be concluded that feeding on sweet potato leaves, roots and their mixture as powder caused significant (P ≤ 0.05) increase in HDL-c, as compared with control (-ve) group, and enhanced the kidney and liver functions with the decrease of ALT, AST, ALP, serum glucose, creatinine, uric acid and urea which reflects the powerful nutraceutical therapeutic effects. Feeding on sweet potato leaves, roots and their mixture, as a powder attenuated diabetic effects in rats, the best result was to concentrate 5% mixture of sweet potato leaves and roots
Fusion of Optical and Microfabricated Eddy-Current Sensors for the Non-Destructive Detection of Grinding Burn

Article history: Received: 24 December, 2020 Accepted: 05 February, 2021 Online: 28 February, 2021 A sensor fusion concept integrating the optical and microfabricated eddy-current sensor for the non-destructive testing of the grinding burn is reported. For evaluation, reference grinding burn with varying degrees are fabricated on 42CrMo4 tool steel cylinder. The complementary sensing nature of the proposed sensors for the non-destructive testing of the grinding burn is successfully achieved, wherein both the superficial and an in-depth quantitative profile information of the grinding zone is recorded. The electrical output (voltage) of the optical sensor, which is sensitive to the optical surface quality, dropped only by 20 % for moderate degree of grinding burn and by ca. 50 % for stronger degree of grinding burn (i.e., by exclusively considering the superficial surface morphology of the grinding burn). Moreover, a direct correlation among the average surface roughness of the grinding burn, the degree of grinding burn and the optical sensor’s output voltage was observed. The superficial and in-depth information of the grinding burn was recorded using a microfabricated eddy-current sensor (planar microcoil with circular spiral geometry with 20 turns) by measuring the impedance change as function of the driving frequency. The depth of penetration of induced eddy-current in the used 42CrMo4 workpiece (with a sensor to workpiece distance of 700 μm) varied from 223 μm to 7 μm on increasing the frequency of the driving current from 1 kHz to 10 MHz, respectively. A very interesting nature of the grinding burn was observed with two distinct zones within the grinding zone, namely, the superficial zone (starting from the workpiece surface to 15 μm in grinding zone) and a submerged zone (>15 μm within the grinding zone). The impedance of the microcoils changed by ca. 8 % and 4 % for the superficial and submerged zone for regions with stronger degree of grinding burn at a frequency of 10 MHz and 2.5MHz, respectively. Furthermore, a correlation between the microhardness of the grinding burn and the impedance change is also observed.
RECORDS OF PHARMACEUTICAL AND BIOMEDICAL SCIENCES A novel green HPTLC method for simultaneous analysis of four antipsychotics in their pharmaceutical formulations: Assessment by Eco-scale

Implementing green analytical techniques has been one of the main objectives of the analytical chemistry community for the past two decades. The aim of transitioning to green analytical chemistry is to establish new methods environmentally benign instead of traditional methods. According to WHO, 20 million people worldwide are affected by schizophrenia, and 45 million people worldwide are affected by bipolar disorders. For that, in this work we develop a green HPTLC method to quantify simultaneously the four antipsychotics chloropromazine HCl, asenapine maleate, quetiapine fumarate and aripiprazole in pure form and tablet formulations. In this chromatographic method, separation was performed using silica gel 60 F254 HPTLC plates, the mobile phase composed of binary mixture of green solvents (ethanol : water (9 : 1 v/v)) which gave compact band with Rf values ranged between 0.14 to 0.70 for the drugs. The method was validated for linearity, accuracy, precision, selectivity and robustness according to ICH guidelines. It was assessed for greenness by analytical Eco-scale and compared with reported HPTLC methods for single analysis of these antipsychotics.
Altered Expression of Unfolded Protein Response Genes in Macrophages from Behcet ’ s Disease

Behcet’s disease (BD), traditionally known as Silk Road disease, is a chronic multisystemic autoimmune disease with relapsing/remitting episodes [1] that manifests most importantly as genital and oral ulcers as well as ocular involvement [2]. BD is generally considered a vasculopathy, occurring in genetically susceptible individuals, and triggered by many various environmental factors [3]. Prevalence ranges from the highest rate of 20420 per 100,000 [4] in Turkey to 80 per 100,000 in Iran and to the lowest rate of 0.46 per 100,000 population in the UK [5]. Genetically speaking, HLA-B*51 has been mainly associated with disease susceptibility since the early 1970s [6] and reported in 60% of BD patients [7]. Concerning the immune system, it has demonstrated that innate inflammatory cytokines such as interleukin (IL)-1α, IL-1β, IL-12, IL-6, IL-15, IL-23, tumor necrosis factor-alpha (TNF-α), and adaptive cytokines from Th1 helper cells including interferon-gamma (IFN-γ), IL-2, and IL-17 and only IL-13 from Th2 lymphocytes have significant associations with BD pathogenesis. Any imbalance, especially in the expression of innate immunity cytokine profile [8] or the ratio of Th17 to Th1 cells, could be of great importance in the pathogenesis of the disease [9], which is still a controversial topic [6]. Regarding the role of pro-inflammatory cytokines in this disease, BD manifests as inflammation episodes in almost all organs and tissues such as joints, the gastrointestinal tract, and the nervous system, and it affects both arteries and veins [10]. Vasculitis is greatly dependent on macrophage functions in harmony with other immune cells, specifically Th1 cells, Original Article Open Access
Webpage Recommendation for Organization Users via Collaborative Page Weight

: Webpage Ranking is commonly used to cater the most relevant webpages to web-users for the given query. Traditional page ranking algorithms generate generic ranking for all users which may not result in most suitable ranking for different individual users. In this paper, a novel method is presented to make more personalized and effective web page recommendations. It uses Cumulative Page Weight (CPweight) by adding Google’s PageRank, average Visit Count and average dwell time of organization’s users. It is observed that more than 90 percent recommendations are matching to the user’s requirements and effective as compare to the conventional approaches.
Optical Tweezers and Maxwell's Demon

Future nanoscale applications of Brownian motors will benefit from further development of stochastic thermodynamics, bridging the the properties of systems in non-equilibrium with those in equilibrium. This thesis presents the first step towards a device mimicking Maxwell's demon, which will be used for a study of systems out of equilibrium. It operates using an optical tweezer that is scanned rapidly in a line, generating an optical line trap in which a silica bead of 1 µm diffuses. The bead is confined in regions of the trap using regions of lower intensity regions as barriers, which are implemented in relation to the bead's position in the trap. Properties of these barriers are investigated by studying the diffusion of the bead following the barrier's implementation. The goal was to experimentally confirm the precise size of two generated barriers in order to find the closest distance a barrier may be implemented without affecting the bead's diffusion. The trap used proved too small to successfully do so, and instead focus was shifted towards an investigation of the intensity gradients of the barriers. (Less)
Surface Energy as a Descriptor of Catalytic Activity

Computational searches for catalysts of the hydrogen evolution reaction commonly use the hydrogen binding energy (HBE) as a predictor of catalytic activity. Accurate evaluation of the HBE, however, can involve large periodic supercell slab models that render high-throughput screening relatively expensive. In contrast, calculations of other relevant surface properties, such as the surface energy, work function, and potential of zero charge (PZC), require only small surface unit cells and are hence less expensive to compute. Correlations between catalytic activity and these surface properties warrant exploration because of this reduced computational cost. Here, we use density functional theory in conjunction with three different exchange-correlation functionals—the local density approximation (LDA), the Perdew–Burke–Ernzerhof (PBE) generalized gradient approximation, and the PBEsol functional (a reparameterization of the PBE functional)—to calculate the lattice constants, surface energy, cohesive energy, an.
Landfill Gas Energy Recovery Based on Micro-Tubular Solid Oxide Fuel Cells

The anode-supported tubular solid oxide fuel cell developed in this work does not have to be run on pure hydrogen, but can be run using a number of different hydrocarbons. In the present study, biogas naturally produced in the landfill of a University campus in United States is considered as the fuel. The main issues to be addressed are the evaluation of the energy potential of this gas and the effect of the embedded pollutants on the fuel cell operation. In the present paper, the production process of the fuel cell is described and an overview of the planned activities for demonstrating the potential of the landfill gas is described.