Miracle-dz/UniFAR-FTUs huggingface dataset:
Classification of Schedule Management Barriers through Concept Mapping

Abstract : Barriers to the adoption of schedule management processes are a matter of serious concern to the acquisition community. Schedule management has been widely accepted to contribute to the successful execution of complicated system development processes since the 1950s. However, studies of recent acquisition failures illustrate that over the last 15 years, there has been significant internal resistance to the adoption of schedule management processes. This exploratory effort used concept mapping to identify and classify the types of barriers existing in the Aeronautical Systems Center (ASC). A series of open-ended questions were posed to four experienced program managers in ASC. Units of Analysis were extracted from the survey responses and grouped and sorted by a representative set of proxy sorters. Multidimensional scaling was applied to the sorted groups to identify the affinity of the responses, and cluster analysis was employed to identify emerging themes from the program managers' responses. The results indicated 10 barrier groups that can be mapped using two conceptual axes (internal-external and tactical-strategic). As a result of this analysis, focused recommendations are provided to the ASC Acquisition Center of Excellence to improve acceptance and adoption of schedule management practices.
Utilization of Reproductive Health Services and associated factors among secondary school students in Woldia Town, Northeast Ethiopia, 2020

Background: Despite policy actions and strategic efforts made reproductive health service uptake of youths in Ethiopia, its utilization remains low. Local evidence about the utilization of reproductive health service among adolescents and associated factors are relevant to design age-appropriate intervention strategies. Objective: The main aim of this study was to assess the utilization of reproductive health service and associated factors among adolescents in Woldia town secondary schools, Amhara, Ethiopia, 2019.Methods: Institutional based descriptive cross-sectional study was conducted on 420 secondary school students in Woldia Town from January - June 2019. A self-administered, structured questionnaire was used to collect the data. The samples were distributed proportionally and participants in each school were selected by systematic sampling technique. Bivariate and multivariable logistic regression was carried out to asses’ association between dependent and independent variables. Result: Two hundred seventy (64.3%) respondents utilize reproductive health service. Residence, educational status of the partner, presence of RHS facility in school, good knowledge level on RHS were significantly associated with the reproductive health services utilization. Conclusion and Recommendations: Knowledge of respondents on reproductive health issues in the study area was found to be low. This low service utilization might make students disposed to different reproductive health risks; STI, HIV, and unwanted pregnancy; which in turn can increase the school dropout rate, and have an impact on an individual’s future life.
Applications of the electric potential sensor for healthcare and assistive technologies

The work discussed in this thesis explores the possibility of employing the Electric Potential Sensor for use in healthcare and assistive technology applications with the same and in some cases better degrees of accuracy than those of conventional technologies. The Electric Potential Sensor is a generic and versatile sensing technology capable of working in both contact and non-contact (remote) modes. New versions of the active sensor were developed for specific surface electrophysiological signal measurements. The requirements in terms of frequency range, electrode size and gain varied with the type of signal measured for each application. Real-time applications based on electrooculography, electroretinography and electromyography are discussed, as well as an application based on human movement. A three sensor electrooculography eye tracking system was developed which is of interest to eye controlled assistive technologies. The system described achieved an accuracy at least as good as conventional wet gel electrodes for both horizontal and vertical eye movements. Surface recording of the electroretinogram, used to monitor eye health and diagnose degenerative diseases of the retina, was achieved and correlated with both corneal fibre and wet gel surface electrodes. The main signal components of electromyography lie in a higher bandwidth and surface signals of the deltoid muscle were recorded over the course of rehabilitation of a subject with an injured arm. Surface electromyography signals of the bicep were also recorded and correlated with the joint dynamics of the elbow. A related non-contact application of interest to assistive technologies was also developed. Hand movement within a defined area was mapped and used to control a mouse cursor and a predictive text interface.
EXPERIMENTAL APPLICATION OF l1-OPTIMAL CONTROL IN ATOMIC FORCE MICROSCOPY

Abstract This paper presents an experimental application of l 1 -optimal control. In an atomic force microscope, the vertical position of the piezoelectric tube scanner and thus the cantilever deflection is controlled using a 2-degree-of-freedom control design. The last recorded scan line is fed forward whereas a feedback controller provides stability and setpoint control. Experimental results verify the performance of the approach and give insight into applicability design, and implementation aspects of l 1 -optimal controllers.
Securing the commercial internet: Lessons learned in developing a postgraduate course in information security management

This paper describes the inception, planning and first delivery of a security course as part of a postgraduate ecommerce program. The course is reviewed in terms of existing literature on security courses, the common body of knowledge established for security professionals and the job market into which students will graduate. The course described in this paper is a core subject for the e-commerce program. This program was established in 1999 and the first batch of students graduated in 2001. The program is offered at both postgraduate and undergraduate level. The work described here relates to the postgraduate offering. Students on this program are graduates of diverse disciplines and do not have a common e-commerce or business background.
A Continuous Colonel Blotto Game

Abstract : Colonel Blotto and the enemy are confronted with the following situation: Colonel Blotto has at his disposal a total of B( 0) units of attack, capable of continuous partition; whereas the enemy has E( 0) units of like character. They are to attack simultaneously and in full force a set of n hills of different value, such that the payoff by the enemy to C. B. for the jth hill is +a(sub j)( 0) if Blotto's forces exceed his there, -a(sub j) if the enemy's exceed Blotto's, and 0 otherwise. How should they play?
Ischemic index and distribution of retinal capillary non-perfusion in neovascular glaucoma.

INTRODUCTION Neovascular Glaucoma (NVG) is a condition normally caused by hypoxic posterior ocular disease, which produces angiogenic factors such as vascular endothelial growth factor (VEGF) that stimulate new vessel proliferation of the anterior segment and angle, eventually leading to angle closure, reduced outflow of aqueous humor and increased intraocular pressure. Without treatment elevated intraocular pressure can rapidly progress to loss of vision. Treatment includes addressing the intraocular pressure and reducing the ischemic drive with panretinal photocoagulation (PRP) of the ischemic retina. Recent imaging advancements allow for ultra-widefield fluorescein angiography (UWFA) which expand the amount of peripheral retina that can be evaluated for non-perfusion. Here we aim to study patterns of non-perfusion in NVG using a group of PRP naïve patients with recent onset NVG. METHODS This study is a retrospective single-center cross-sectional study of patients seen at LAC + USC Medical Center from January 2015 to April 2020 with new onset NVG, without PRP and with UWFA completed. The percentage of ischemic index of the retina was calculated from the UWFA and evaluated in three distinct zones centered on the fovea: the posterior pole, the mid periphery, and far periphery. To increase sample size, a confirmatory group was included, with PRP allowed prior to UWFA but not before diagnosis. In addition, the time between diagnosis and UWFA was increased to 6 months. RESULTS A total of 11 eyes met inclusion criteria for the primary group. Ischemic index was found to be 91% in the far periphery, 77% in the mid periphery, and 42% at the posterior pole. The total average ischemic index was 76%. There was a statistically significant difference between the far periphery and posterior pole and mid periphery and posterior pole. A total of 24 eyes met criteria for the confirmatory group. Ischemic index for the confirmatory group was found to be 93% in the far periphery, 75% in the mid periphery, and 35% at the posterior pole. There was a statistically significant difference between the far periphery, posterior pole and mid-periphery. CONCLUSION This knowledge can be used to further guide treatment and understand risk for NVG.
A method for landing gear modeling and simulation with experimental validation

This document presents an approach for modeling and simulating landing gear systems. Specifically, a nonlinear model of an A-6 Intruder Main Gear is developed, simulated, and validated against static and dynamic test data. This model includes nonlinear effects such as a polytropic gas model, velocity squared damping, a geometry governed model for the discharge coefficients, stick-slip friction effects and a nonlinear tire spring and damping model. An Adams-Moulton predictor corrector was used to integrate the equations of motion until a discontinuity caused by a stick-slip friction model was reached, at which point, a Runga-Kutta routine integrated past the discontinuity and returned the problem solution back to the predictor corrector. Run times of this software are around 2 mins. per 1 sec. of simulation under dynamic circumstances. To validate the model, engineers at the Aircraft Landing Dynamics facilities at NASA Langley Research Center installed one A-6 main gear on a drop carriage and used a hydraulic shaker table to provide simulated runway inputs to the gear. Model parameters were tuned to produce excellent agreement for many cases.
Aircraft and Airport-Related Hazardous Air Pollutants: Research Needs and Analysis

This report provides guidance on the most important projects to the airport community for Airport Cooperative Research Program (ACRP) consideration in the area of hazardous air pollutants (HAPs). The report examines the state of the latest research on aviation-related HAP emissions and identifies knowledge gaps that existing research has not yet bridged. These gaps and related research needs are then prioritized based on the ability of research in those areas to provide airports a better understanding of the relationship of the type and amount of HAPs being emitted and their impacts. While the main purpose of this report is to identify key research areas important to the airport community for ACRP consideration, research communities at large will also benefit from this report’s comprehensive analysis of aviation-related HAP research needs.
Comparison of MHD models for aluminium reduction cells

The self sustained waves at the aluminium - electrolyte interface, known as 'MHD noise' are observed in most of the commercial cells under certain conditions. The instructive analysis presents how a step by step inclusion of different physical coupling factors is affecting the wave development in the electrolysis cells. Th early theoretical models for wave development do not account for the current distribution at the cathode, instead assuming a uniform current density of Jz at the bottom. When the electric current is computed according to the actual elctrical circuit the growth rate is significantly lower, and if a sufficient dissipation is included, does not lead to instability. The inclusion of the horizontal circulation-generated turbulence is essential in order to explain the small amplitude of self-sustained oscillations. The horizontal circulation vortices create a pressure gradient contributing to the deformation of the interface. The full time dependent model couple the nonlinear dynamics and the extended electromagnetic that covers the whole bus bar circuit and the ferromagnetic effects.
Civilian American and European Surface Anthropometry Resource (CAESAR). Volume 2: Descriptions

Abstract : The Civilian American and European Surface Anthropometry Resource (CAESAR) project was a survey of the civilian populations of three countries representing the North Atlantic Treaty Organization (NATO) countries; the United States of America (USA), The Netherlands, and Italy (Robinette et al. 1999, Robinette 2000). One site in Ottawa, Canada was added to the USA sample and it is henceforth referred to as the North American sample. The survey was carried out by the US Air Force, with the help of: 1) the contractor, Sytronics, Inc.; 2) The Netherlands Organization for Applied Scientific Research (TNO); and 3) a consortium of companies under the umbrella of the Society of Automotive Engineers (SAE). The purpose of this document is to provide a general description which contains descriptions of the methods used for the demographics, the measurements (both 3-D and 1-D), and the landmarks. It has a companion document, Volume I: Summary, by Robinette et al. 2002.
Altered Spontaneous Brain Activity in Somatic Symptom Disorder: A Resting-state fMRI Study

Background: Somatic symptom disorders (SSDs) are common medical disorders characterized by various biological, social, and psychological pathogenic factors. Little is known about the neural correlations of SSD. Methods: In this study, we evaluated the dysfunction in 45 patients with SSD and in 43 controls by combining the regional homogeneity (ReHo) amplitudes of low-frequency fluctuation (ALFF) methods based on resting-state functional magnetic resonance imaging. Results: Compared to the controls, the patients with SSD exhibited significantly greater ReHo in the right cingulate gyrus and smaller ReHo in the right precuneus, left inferior and temporal gyrus extending to the left middle temporal gyrus and left parahippocampal gyrus, and right pons. The SSD patients showed higher ALFF values in the cingulate gyrus extending to the left medial frontal gyrus, right insula extending to the right inferior frontal gyrus, and left medial frontal gyrus extending to the left anterior cingulate cortex. Conclusions: These dysfunction areas seem to have a particular importance for the occurrence of SSD, which may result in dysfunction in self-relevant processes, emotional processing, multimodal integration, arousal, interoception, and body perception.
A CONTROL PROBLEM FOR DECENTRALIZED AUTONOMOUS VOLTAGE CONTROLLERS

This paper studies an optimal control prob- lem for decentralized autonomous voltage controllers for a future distribution system. An optimal control problem is formulated with an objective of minimizing the total volt- age errors of the system. The control problem is extended into a decentralized autonomous control scheme, where operation data are assumed to transfer among controllers. The proposed control method guarantees that the control performance is nearly optimized, avoiding harmful inter- ference among distributed controls and reverse control actions. The effectiveness of the proposed method has been confirmed through numerical simulations using a 53-bus test system having 39 TCUL transformers.
PRODUCTION OF FETA LIKE CHEESE FORTIFIED WITH POMEGRANATE AND LEMON PEELS EXTRACT AS NATURAL ANTIOXIDANTS

This study was carried out to clear the effect of addition of pomegranate and lemon peel extracts as natural antioxidant on Feta like cheese quality. These extracts were added to cheese during manufacture at a rate of 0.25 and 0.50% of each extract. Cheese treatments were analyzed for chemical analysis, oxidative stability, microbiological examination and organoleptic properties, when fresh and after 7, 14, 21 and 28 days of storage at refrigerator temperature. Results showed that these extracts have a high content of phenolic compounds, and gave high antioxidant activity. As well as the addition of these extracts to cheese did not significantly affect the chemical composition but affected the oxidative stability, bacteriological and organoleptic properties of cheese samples. A clear reduction in peroxide and acid values of cheese samples containing natural extracts during storage period than control cheese samples where observed. As well as total bacterial, coliform, as well as yeast and mould counts of cheese samples contain natural extracts did not detected during storage compared with control cheese samples. Also, results showed that organoleptic properties of all cheese treatments improved by progressed of storage period until the end of storage. Cheese containing lemon peels extracts showed lowest flavour intensity and body characteristics than other cheese. From the previous results, it could be recommended the use of some natural extracts in feta like cheese manufacture such as pomegranate and lemon peel extracts at a rate of 0.5%, where it improved the sensory and bacteriological characteristics of cheese samples and increased stability against oxidation.
Hexanol Biosynthesis From Syngas by Clostridium Carboxidivorans P7 - Investigation of Product Toxicity, Temperature Dependence and in Situ Extraction 

BackgroundClostridium carboxidivorans P7 converts synthesis gas (also called syngas, a mixture of CO, CO2 and H2) directly into industrially relevant alcohols (hexanol, butanol and ethanol) and their corresponding acids (caproate, butyrate and acetate). The product titers and ratios are highly dependent on fermentation parameters and the compositions of syngas as well as the growth medium. Hexanol titers produced by C. carboxidivorans P7 have recently been improved by optimizing these conditions, but little is known about the toxicity of hexanol towards Clostridium species. We hypothesized that the hexanol titers currently produced by C. carboxidivorans P7 are limited by product toxicity. ResultsWe tested our hypothesis by analyzing IC50 values for hexanol at 30 °C and 37 °C, which we determined as 17.5 ± 1.6 mM and 11.8 mM ± 0.6 mM, respectively, indicating a major influence of growth temperature on hexanol sensitivity. We found that 20 mM hexanol was acutely toxic to C. carboxidivorans P7 at 30 °C and growth was already completely inhibited in the presence of 15 mM hexanol at 37 °C. Membrane fatty acid analysis showed that the cell membrane composition of C. carboxidivorans adapted strongly to the higher growth temperature but surprisingly did not change significantly when grown in the presence of 10 mM hexanol. To avoid product toxicity during hexanol production we added oleyl alcohol as an extraction solvent. At 30 °C, addition of the solvent increased total hexanol titers nearly 2.5-fold from 10.5 to 23.9 mM. However hexanol titers decreased from 7.0 to 5.6 mM in the presence of oleyl alcohol at 37 °C. At 30 °C, the extraction phase contained large amounts of hexanol (448 ± 130 mM) and butanol (102 ± 20 mM). Values were lower at 37 °C with 101 ± 27 mM hexanol and 50 ± 6 mM butanol. Growth was not inhibited by oleyl alcohol. Biomass remained high in the presence of oleyl alcohol at 30 °C, but rapidly decreased in the absence of the solvent. At 37 °C biomass decreased even in the presence of oleyl alcohol. We tested corn oil and sunflower seed oil as potentially cheaper and more sustainable extraction solvents. While oleyl alcohol displayed the highest extraction efficiency for hexanol, total hexanol titers were similar with all solvents tested. ConclusionsBoth, product toxicity and growth temperature were identified as limiting factors during the conversion of syngas to hexanol by C. carboxidivorans P7. At 30 °C the addition of a biocompatible solvent led to detoxification and a significant increase in hexanol titers, 80% higher than highest previously reported titers. These findings help to mediate the limitation of product toxicity in hexanol production from syngas for the development of more efficient process designs and production strains.
Pelton Ladder Master Plan.

Rearing additional fish in Pelton Ladder provides fishery managers with a low-cost alternative to making major financial investments in new formal hatchery facilities. Adult chinook returning from this rearing program will help bolster the dwindling runs of upriver spring chinook, thus assisting the Council's goal for increased production of this species. The Deschutes River Subbasin Plan envisions need for additional return of hatchery-produced spring chinook in order to meet goals for increased harvest opportunity. Spring chinook released from Pelton Ladder will contribute little to offshore fisheries, as we can account for only about 1 percent of the RBH contribution in offshore fisheries. Based on past performance, we expect 6 percent of the adults produced will be caught in sport, commercial, and tribal subsistence fisheries in the Columbia River. Most benefits of the extra adults produced will be realized in the Deschutes River in the form of increased sport and tribal harvests and increased returns to RBH. Adults collected at Pelton Ladder above production needs will be provided to the CTWS. Return of more adults to the Deschutes River will continue the trend of increased abundance of spring chinook noted since 1985. Rearing of fish in the ladder under the proposed program will provide ODFW and CTWS co-management opportunity, and the associated monitoring and evaluation studies will refine ODFW's ability to effectively manage the RBWPelton Ladder rearing program and will provide inferences about the ability to further employ the fish-rearing potential of unused sections of the fish ladder.
Perceptions and Attitude of Students toward E-Learning in Kwara State University, Malete, Kwara State, Nigeria

The study examined the perceptions and attitude of students toward e-learning in Kwara State University, Malete, Kwara State, Nigeria. The objectives of the study were to: examine the perceptions of undergraduates on the adoption of e-learning by Kwara State University; examine the attitude of students towards e-learning in Kwara State University, Malete; and investigate the constraints affecting e-learning by students of Kwara State University. The study adopted the survey design. The population of the study comprised the entire undergraduate students in Kwara State University, Malete. 240 students participated in the online survey. A self-designed questionnaire was used for the collection of data. Data were analysed using descriptive statistics of frequency counts and percentage. Findings of the study revealed that students have positive perceptions and attitude toward e-learning. The study also revealed the constraints affecting the use of e-learning tools by students of Kwara State University, Malete. The study recommended that the management of Kwara State University should embraced e-learning as a way of overcoming the covid-19 challenges in the university and expanding learning.