Detection of natural structures and classification of HCI-HPR data using robust forward search algorithm

Purpose – The purpose of this paper is to proposes a forward search algorithm for detecting and identifying natural structures arising in human-computer interaction (HCI) and human physiological response (HPR) data. Design/methodology/approach – The paper portrays aspects that are essential to modelling and precision in detection. The methods involves developed algorithm for detecting outliers in data to recognise natural patterns in incessant data such as HCI-HPR data. The detected categorical data are simultaneously labelled based on the data reliance on parametric rules to predictive models used in classification algorithms. Data were also simulated based on multivariate normal distribution method and used to compare and validate the original data. Findings – Results shows that the forward search method provides robust features that are capable of repelling over-fitting in physiological and eye movement data. Research limitations/implications – One of the limitations of the robust forward search algorithm is that when the number of digits for residuals value is more than the expected size for stack flow, it normally yields an error caution; to counter this, the data sets are normally standardized by taking the logarithmic function of the model before running the algorithm. Practical implications – The authors conducted some of the experiments at individual residence which may affect environmental constraints. Originality/value – The novel approach to this method is the detection of outliers for data sets based on the Mahalanobis distances on HCI and HPR. And can also involve a large size of data with p possible parameters. The improvement made to the algorithm is application of more graphical display and rendering of the residual plot

A Control System for Detecting Emotions on Visual Interphase Stimulus

Complex dynamic contents of visual stimuli induce implicit reactions in a user. This leads to changes in physiological processes of the user which is referred to as stress. Our goal is to model and produce a system that represents the mechanical interactions of the body and eye movement behavior. We are particularly concerned with the skin conductance response (SCR) and eye fixations to visual stimulus and build a dynamic system that detects stress and its correlates to visual widgets. The process consists of the following modules: (1) a hypothesis generator for suggesting possible structural changes that result from the direct interaction with visual stimulus, (2) an information source for responding to operator querying about users’ interactive and physiological processes, and (3) a continuous system simulator for simulating and illustrating physiological reactions during interaction. This model serves as an infrastructure for modeling physiological processes and could be of benefit in usability laboratory, web developers, and designers of interactive systems, enabling evaluators to visualize interface as a better access to identifying areas that cause stress to users

A Conceptual Analysis of Global Human Resource Practices: Challenges and Prosp

With the advent of globalisation, all firms, large or small have become global, they ceased to be local. Even those organisations who consider themselves immune to transactions across geographical boundaries are connected to the wider network globally and this has encouraged many multinational companies to extend their operations to other countries by establishing subsidiary companies in other countries. For these companies to do well, sound human capital management practices must be embraced. This paper therefore examines the trends in globalhuman resource management practices, as well as the functions and challenges. As a conceptual paper, it is based on review of scholarly articles with a focus on creating a local appeal without compromising the global identity; generating awareness of cross-cultural sensitivities among managers globally and hiring of staff across geographical boundaries; and upon cultural sensitivities, training and development for the host communities. It concludes that success lies in a firm’s ability to build a unique competitive advantage against others. This competitive advantage will last longer if it is within the human capital of the organization rather than just a technology that others can buy. To become and remain competitive globally, it is recommended that a multinational enterprise acquaint itself with the various environmental settings that are likely to inhibit its success and design ways to beat them in advance.Keywords: HRM, staffing policy, labour relations, inter-country differences, Global HR Syste

GC-MS analysis and physiochemical properties of Enterolobium cyclocarpum (elephant ear) seed oil

Background: The present study aimed to extract, evaluate the physicochemical properties, and chemical characterization of the seed Enterolobium cyclocarpum. E. cyclocarpum is a legume of the Leguminosae family. It is used as foliage, for animal feeding and oil is extracted for several application in folk medicine for the treatment of sore throat, colds, diarrhea, headache, intestinal ailments, and stomachache. The leaf infusion is used as a laxative In the West Indies; seeds are chewed for a sore throat.Methods: Three hundred grams (300 g) of each of the pulverized samples were extracted with 100% hexane using Soxhlet extractor to produce a light-brown oil of low viscosity. The physicochemical properties of the oil were analyzed using AOAC standard methods, while the oil components were characterized on an HP-5MS column Gas Chromatography coupled with Mass Spectrometry (GC-MS).Results: The yield of the oil is very low (only 4.11 % by weight), Fatty acid composition showed that undecanoic acid methyl ester (36.68%) was the dominant fatty acid, followed by 3-linoleic acid (25.04%), and 2-linolelaidic acid methyl ester (12.98%). Physicochemical properties of themed oil were moisture content (0.85%); refractive index (25oC), 1.45; Specific gravity, 0.86±0.02; iodine value, 68.55±0.02/100 g of oil; peroxide value, 6.58±0.03 meq. O2/kg of oil; free fatty acids, 2.63±0.01 mg of KOH/g of oil; acid value, 5.26±0.02 mg of KOH/g of oil; saponification value, 189.00±0.03; Unsaponifiable value, 0.66±0.01%.Conclusion: This study has shown that the seed oil of E. cyclocarpum displayed properties and constituents as a substitute oil for industrial, pharmaceutical, and domestic applications

Enabling Optical Wired and Wireless Technologies for 5G and Beyond Networks

The emerging fifth-generation mobile communications are envisaged to support massive number of deployment scenarios based on the respective use case requirements. The requirements can be efficiently attended with ultradense small-cell cloud radio access network (C-RAN) approach. However, the C-RAN architecture imposes stringent requirements on the transport networks. This book chapter presents high-capacity and low-latency optical wired and wireless networking solutions that are capable of attending to the network demands. Meanwhile, with optical communication evolutions, there has been advent of enhanced photonic integrated circuits (PICs). The PICs are capable of offering advantages such as low-power consumption, high-mechanical stability, low footprint, small dimension, enhanced functionalities, and ease of complex system architectures. Consequently, we exploit the PICs capabilities in designing and developing the physical layer architecture of the second standard of the next-generation passive optical network (NG-PON2) system. Apart from being capable of alleviating the associated losses of the transceiver, the proposed architectures aid in increasing the system power budget. Moreover, its implementation can significantly help in reducing the optical-electrical-optical conversions issue and the required number of optical connections, which are part of the main problems being faced in the miniaturization of network elements. Additionally, we present simulation results for the model validation

Small Ruminant Farmers' Perception of Climate Change in Moro Local Government Area, Kwara State, Nigeria

This study examined the small ruminant farmers’ perception of climate change in Moro Local Government Area (LGA) of Kwara State, Nigeria. About 120 small ruminant farmers were selected for the study. Analyticall tools such as descriptive (frequency count, percentage, mean score) and inferential [Pearson product moment correlation (PPMC)] statistics were used to analyse the data. The result revealed that about 57.5% of the respondents were male, average age of 38.3years, income of N56633.33, and household size of about 5 persons. The average number of goat and sheep was 10 and 5 respectively. About 52% of the respondents utilized extensive system of rearing and 60.8% had access to extension services. About 77.5% of the respondents indicated Ministry of Agriculture as their main source of information on small ruminant production. The result revealed that planting of trees/erecting cover to serve as shades to reduce heat stress (90.8%) was the most frequently used adaptation strategies to climate change. About 59.2% of the respondents have high level/status of use of adaptation strategies. The highest ranked perception statement was increase in temperature (4.48), while disease outbreak and high mortality (2.78) ranked highest as factor affecting small ruminant production. It is therefore recommended that there should be provision of information on the adaptation strategies as climate change is now a reality that is not going away and provision of veterinary services to reduce disease outbreak

Simulating the Effect of Friction on Drive Screw Using System-of-System Modeling with Predetermined Torque

In most mechanical systems, screw threads serve three main basic purposes: (i) to transmit power, (ii) to provide a clamping force, and finally (iii) to restrict or control motion. This chapter demonstrates the effects of friction and behavior which can occur in a bolted fastening (screw thread) for advanced design purposes. To model this behavior, other control components are attached to the bolted screw. The bolt preload is applied with a predetermined torque. For this case the preload depends on the friction under the head and in the thread. The friction prevents the loosing of the bolted fastening. This effect is termed as self-locking effect. We designed an algorithm that reproduces an exemplary simulation scenario, which determines friction and its effect on thread angle based on the strength of the coefficient of friction at a specific tension or clamp load value using the system-of-system approach. The result shows specific behavior on both the motion in threads and drive screw with predetermined torque. The chapter is limited to creating a simple simulation environment to demonstrate the effects

Development and Validation of Web-based Courseware for Junior Secondary School Basic Technology Students in Nigeria

This research aimed to develop and validate a web-based courseware for junior secondary school basic technology students in Nigeria. In this study, a mixed method quantitative pilot study design with qualitative components was used to test and ascertain the ease of development and validation of the web-based courseware. Dick and Carey instructional system design model was adopted for developing the courseware. Convenience sampling technique was used in selecting the three content, computer and educational technology experts to validate the web-based courseware. Non-randomized and non-equivalent Junior secondary school students from two schools were used for field trial validation. Four validating instruments were employed in conducting this study: (i) Content Validation Assessment Report (CVAR); (ii) Computer Expert Validation Assessment Report (CEAR); (iii) Educational Technology Experts Validation Assessment Report (ETEVAR); and (iv) Students Validation Questionnaire (SVQ). All the instruments were face and content validated. SVQ was pilot tested and reliability coefficient of 0.85 was obtained using Cronbach Alpha. CVAR, CEAR, ETEVAR were administered on content specialists, computer experts, and educational technology experts, while SVQ was administered on 83 JSS students from two selected secondary schools in Minna. The findings revealed that the process of developing web-based courseware using Dick and Carey Instructional System Design was successful. In addition, the report from the validating team revealed that the web-based courseware is valuable for learning basic technology. It is therefore recommended that web-based courseware should be produced to teach basic technology concepts on large scale

Development and Validation of Web-based Courseware for Junior Secondary School Basic Technology Students in Nigeria

This research aimed to develop and validate a web-based courseware for junior secondary school basic technology students in Nigeria. In this study, a mixed method quantitative pilot study design with qualitative components was used to test and ascertain the ease of development and validation of the web-based courseware. Dick and Carey instructional system design model was adopted for developing the courseware. Convenience sampling technique was used in selecting the three content, computer and educational technology experts to validate the web-based courseware. Non-randomized and non-equivalent Junior secondary school students from two schools were used for field trial validation. Four validating instruments were employed in conducting this study: (i) Content Validation Assessment Report (CVAR); (ii) Computer Expert Validation Assessment Report (CEAR); (iii) Educational Technology Experts Validation Assessment Report (ETEVAR); and (iv) Students Validation Questionnaire (SVQ). All the instruments were face and content validated. SVQ was pilot tested and reliability coefficient of 0.85 was obtained using Cronbach Alpha. CVAR, CEAR, ETEVAR were administered on content specialists, computer experts, and educational technology experts, while SVQ was administered on 83 JSS students from two selected secondary schools in Minna. The findings revealed that the process of developing web-based courseware using Dick and Carey Instructional System Design was successful. In addition, the report from the validating team revealed that the web-based courseware is valuable for learning basic technology. It is therefore recommended that web-based courseware should be produced to teach basic technology concepts on large scale