Miracle-dz/UniFAR-FTUs huggingface dataset:
Embedded Control of the DC Drive System for Education

Taking into account the spread use of the DC motor in robotics, the main objective of the chapter is to promote the knowledge regarding the development of the DC drive system, in didactical manner. Basically, for one motor control the cascaded loop DC drive system is used. Numerical implementation of the DC drive system based on Z-transform discrete method is provided. The electrical drive supposes both control types: the torque and speed. The feedback signals of the control loops are provided by using incremental encoder and of an original load torque estimator. Based on the DC motor dynamics, the appropriate parameters of the speed and torque controllers are provided automatically. On line parameters estimation of the DC motor can assure the performances of the DC drive controllers. The symmetrical and modulus optimum criteria are used. In order to prove the feasibility of the proposed solution, the entire Matlab script of the cascade control of the DC drive is provided. The strategy of the cascaded loop control at constant flux is divided into dynamic regime and into steady state regime. The chapter strategy follows two directions: the first, knowledge developments, the second, the applicative research through the real time implementation.
TECHNOLOGICAL CAPACITY DEVELOPMENT THROUGH OSS IMPLEMENTATION : THE CASE OF PUBLIC HIGHER EDUCATION INSTITUTIONS IN ETHIOPIA 1

The Open Source Software (OSS) literature gives little attention to the study and practice of domain specific end-user OSS implementation in general and in the public sector of developing countries (DCs) in particular. This paper, however, investigates the trajectories of two OSSbased information systems (IS) implementation projects in a developing country (DC) context with the aim to uncover the practice-based learning and resource sharing evident among locally situated and globally dispersed developers and users. The result of the interpretative case study research shows that the OSS philosophy and practice of software development, implementation and ownership, facilitates for the emergence of practice-based learning from the sharing of implementation accounts and artifacts without sharing the same context of work. Thus, the paper argues in favor of an implementation approach that focuses on distributed practice-based experience, knowledge and resource sharing, and learning with the mediation of the information infrastructure in order to facilitate and sustain OSS-based IS implementation in DCs. The paper contributes both to the OSS and IS implementation literatures by showing the mechanisms of developing the technological capacity of indigenous groups and using the trans-situated learning model as a means to understanding the learning dynamics in OSS implementation.
Utilization of food processing waste by Thraustochytrids

Schizochytrium mangrovei KF6, a mangrove thraustochytrid isolate, was evaluated for its docosahexaenoic acid (DIIA) production potential in both a glucose yeast extract medium and various food waste. Highest DHA yield was obtained after 4 days of incubation in a glucose medium at 3094 mg/L or 203 mg/g. Waste fermented with S. mangrovei also yielded DHA in varying quantities: 12.6 mg/g DHA from bread crusts, 7.3 mg/g and 6.2 mg/g respectively from okara powder and brewing grain waste. Analysis of the waste before and after fermentation showed that the simple sugars, fatty acids with 18 carbons, namely stearic (18:0), oleic (18:1) and linoleic (18:2) acids were utilized by S. mangrovei. Yields of DHA from thraustochytrids grown on waste (6.2-12.3 mg/g) were much lower than those grown in glucose yeast extract medium (203 mg/g). This study has shown that thraustochytrids can increase the nutritive value of food waste and such a product may fmd a use in aquaculture.
Epizootic mortalities in tilapia Oreochromis mossambicus

Periodic mortalities reaching 100% over a period of 60 d were observed in fry of tilapia Oreochromis mossambicus. Moribund fish exhibited r a p ~ d corkscrew-like swimming patterns ('spinning'), and the syndrome was successfully transmitted via cannibalism to naive populations of tilapia fry. Histology revealed no evidence of bacteria or parasites Bohle iridovirus (BIV) infected tilapia and those succumbing to 'spinning tilapia' ('ST') syndrome shared similarities in histopathological lesions of k~dney and muscle. Virus isolation in vitro from affected fish was unsuccessful. The barramundi Lates calcarifer bioassay indicated that the aetiological agent of the epizootic was BIV.
Exploring Saudi Citizens' Acceptance of Mobile Government Service

Mobile government is considered as an emerging technology that has been used in Saudi Arabia in order to enhance communication between the government and its citizens, it can also be considered as a mechanism through which the government can effectively respond to their needs and expectations. The current study seeks to propose and validate M-government adoption model to fully understand the varied variables affecting the adoption behavior. This model is based on Technology Acceptance Model (TAM) and DeLone and McLean Information Systems Success Model. The researchers will depend on a descriptive survey approach using structured questionnaires to investigate the extent of M-government acceptance by Saudi users. Structural equation modeling will be used as a method for statistical data analysis.
Human Capital and Income Inequality

We investigate empirically how human capital, measured by educational attainment, is related to income distribution. We find that the regressions, using a panel data set covering a broad range of countries between 1980 and 2015, show that a more equal distribution of education contributes significantly to reducing income inequality. Educational expansion is a major factor in reducing educational inequality and thus income inequality. Public policies that improve social benefits and price stability contribute to reducing income inequality, while public spending on education helps to reduce educational inequality. In contrast, higher per capita income, greater openness to international trade, and faster technological progress tend to make both income and education distribution more unequal. Using the calibration of empirical results, we find that we can attribute the rising income inequality within East Asian economies in recent decades to the unequalizing effects of fast income growth and rapid progress in globalization and technological change, which have surpassed the income-equalizing effects from improved equality in the distribution of educational attainment during the period.
Long run dynamics of regional growth in Chile

The aim of this article is to examine the process of economic growth in the regions of Chile using a time series approach.In particular,we test the hypothesis of a unit root in the log of the ratios of per capita product between every possible pair taken from the 13 regions.The ‘acceptance’ of the null hypothesis means that the ratio of the per capita product doesn’t tend to revert to a deterministic constant value and therefore,one of the definitions of convergence in Bernard and Durlauf (1996) is violated.We have found that there are two groups of regions that show within-group convergence but the two groups don’t converge.Also,there are two regions that don ’t converge with any other region of the country.
Defining the outcomes of community care: the perspectives of older people with dementia and their carers

There is growing recognition of the need for outcome measures which reflect the aims of services for people with dementia. The development and application of existing outcome measures has often marginalised people with dementia. ‘Experts’ and carers have been viewed as primary sources when identifying relevant outcomes or domains of quality of life, and proxy respondents have often been responsible for rating outcomes on the resulting measures. This paper reports a small consultation with people with dementia and their carers to identify the desired outcomes of community care. While there was considerable overlap in the outcomes identified by people with dementia and their carers, a number of limitations of relying solely on carers as proxy respondents were identified. A key outcome, which has been relatively neglected in previous work, was maximising a sense of autonomy. A range of outcomes related to the ways in which services are delivered were also identified. Future evaluative studies should encompass both quality-of-life outcomes and service-process outcomes (the impacts of the ways in which services are delivered) in addition to other outcome measures relevant to the aims and objectives of the service.
Analysis of laying traits in first cycle geese in two production systems

The phenotypic relationships between the components of the number of eggs per goose in the first laying cycle were estimated in two systems: S1 consisted of geese used for fatty liver pro- duction (Grey Landes) and reared in mating pens with natural lighting; S2 consisted of meat produc- tion geese, reared in individual cages under controlled lighting conditions. Criteria of the laying rhythm were defined and estimated, according to the phenomenon of laying clutches. A clutch was defined as the number of eggs separated by an interval of 48 h at most. Intervals greater than 48 h were defined as pauses. Differences between the two systems (S1 vs. S2) were obvious for all traits investi- gated, with dramatic effects on the total number of eggs (37.8 vs. 72.0), the laying duration (92.3 vs. 156.2 d), the average clutch length (4.4 vs. 7.7 eggs), the average pause duration, the percent of pro- ductive time and the within clutch interval between consecutive eggs (41 vs. 43 h). The difference in total egg number between S1 and S2 production systems appeared to be due to a difference in clutch length rather than to a difference in the number of clutches. Except for the correlations involving the number of clutches and other components of egg production (number of eggs, laying intensity or pause duration), the two systems showed a great similarity in the pattern of phenotypic correlations between component traits of total egg production. High positive correlations were found between to- tal egg number and its components, laying duration and laying rate. Correlations between egg number and characteristics of clutches were also similar across systems, except for the number of clutches: egg number was positively correlated with clutch length and negatively with pause duration.
The evolution of information gathering: operational constraints

I present two new approaches to the study of information in foraging theory. First, rather than determine the cost a forager should pay to obtain information, I concentrate on the consequences of information use in an interacting population. I describe a density-dependent model which tracks genotypes with high and low information access through evolutionary time. Stable polymorphisms result. I suggest that the value of information is not monotonically increasing. Second, I present a scheme for partitioning the information used in the decision making process. Three types of information are recognized: internal information, or an individual's internal state; external information, or environmental factors; and relational information, or rules for predicting transformations of internal state. Interactions between the three types are examined in an extension of the basic model.
The local environment shapes refugee integration: Evidence from post-war Germany

This paper studies how the local environment in receiving counties affected the economic, social, and political integration of the eight million expellees who arrived in West Germany after World War II. We first document that integration outcomes differed dramatically across West German counties. We then show that more industrialized counties and counties with low expellee inflows were much more successful in integrating expellees than agrarian counties and counties with high in inflows. Religious differences between native West Germans and expellees had no effect on labor market outcomes, but reduced inter-marriage rates and increased the local support for anti-expellee parties.
Ditregra - an auxiliary program for structural determination of diterpenes

This work describes the creation of heuristics rules based on 13 C-NMR spectroscopy that characterize several skeletal types of diterpenes. Using a collection of 2745 spectra we built a database linked to the expert system SISTEMAT. Several programs were applied to the database in order to discover characteristic signals that identify with a good performance, a large diversity of skeletal types. The heuristic approach used was able to differentiate groups of skeletons based firstly on the number of primary, secondary, tertiary and quaternary carbons, and secondly the program searches, for each group, if there are ranges of chemical shifts that identifies specific skeletal type. The program was checked with 100 new structures recently published and was able to identify the correct skeleton in 65 of the studied cases. When the skeleton has several hundreds of compounds, for example, the labdanes, the program employs the concept of subskeletal, and does not classify in the same group labdanes with double bounds at different positions. The chemical shift ranges for each subskeletal types and the structures of all skeletal types are given. The consultation program can be obtained from the authors.
Application on Solar, Wind and Hydrogen Energy - A Feasibility Review for an Optimised Hybrid Renewable Energy System

Present status of development of the energy systems, like solar, wind and of Hydrogen use as renewable energy sources, have been examined in ascertaining the scope of their application from techno-economic viability. Efficiency rating of different generations of PV cells with cost component and scope of their use, including practical application and economic fall outs thereby, were also spelt out from case study. Cost of PV module being shown to be the main contributor, deciding the economy of PV – based power generation scheme, the methodology of determining its total requirement could also be shown. Economy evaluation of solar PV and solar heating (solar cooker, solar pond, etc.) were also assessed stating their merits and demerits. Different aspects on evaluation of economy for off-shore and on-shore wind energy for developing a wind farm at a particular site were assessed. The scope of availing the wind energy value /sq. m. at a concerned site for a particular wind speed (measuring it at anemometer height and converting to its value at the hub height), could also be ascertained. Necessary study on the economy of hydrogen production by splitting water (electrolysis) was made and was noted that the OTEC (ocean thermal energy conversion system) generated electricity would be the best cost-effective method, mainly because of its prospect of earning huge royalty from its different by-products. On examination of H2-fuel cell combine as transport fuel, it could be shown that a single 100 MW OTEC can cater to 30 hydrogen refuelling stations, each with 250 vehicle movement/day. Feasibility study on optimised hybridization of the combination of PV-wind and H2, for uninterrupted power supply with methodology on resource assessment at concerned sites, particularly for PV and wind energy with economic fall outs, could be ascertained. Grey areas of research in exploring acoustic energy is also discussed.
Solution of Whitehead equation on groups

Let $G$ be a group and $H$ an abelian group. Let $J^{*} (G, H)$ be the set of solutions $f \colon G \to H$ of the Jensen functional equation $f(xy)+f(xy^{-1}) = 2f(x)$ satisfying the condition $f(xyz) - f(xzy) = f(yz)-f(zy)$ for all $x, y , z \in G$. Let $Q^{*} (G, H)$ be the set of solutions $f \colon G \to H$ of the quadratic equation $f(xy)+f(xy^{-1}) = 2f(x) + 2f(y)$ satisfying the Kannappan condition $f(xyz) = f(xzy)$ for all $x, y, z \in G$. In this paper we determine solutions of the Whitehead equation on groups. We show that every solution $f \colon G \to H$ of the Whitehead equation is of the form $4f = 2 \varphi + 2 \psi $, where $2\varphi \in J^* (G, H)$ and $2\psi \in Q^* (G, H)$. Moreover, if $H$ has the additional property that $2h = 0$ implies $h = 0$ for all $h \in H$, then every solution $f \colon G \to H$ of the Whitehead equation is of the form $2f = \varphi + \psi $, where $\varphi \in J^*(G,H)$ and $2\psi (x) = B(x, x)$ for some symmetric bihomomorphism $B \colon G \times G \to H$.
A distributed water balance model to estimate direct groundwater recharge: A case study from the nhoma and khaudum catchments, Namibia

The most important water resource in drylands such as Namibia is groundwater and its recharge including temporal and spatial variations need to be assessed reliably for sustainable water management. In this paper, a grid-based conceptual water balance model with a simplification at the catchment scale level is used to assess groundwater recharge. The reliability of the model predictions are verified by the independent chloride mass balance method. The distributed, process-oriented, physically based water balance model MODBIL used in this study considers the major water balance components and calculates a spatially differentiated water balance by simulating water fluxes and storages at temporal and spatial resolutions based on meteorological, topographic, soil physical, land cover and geological input parameters. In this study it is set up for the upper Khaudum and Nhoma catchments in the Kalahari of north-eastern Namibia and northwestern Botswana at a spatial resolution of 500 x 500 m, calculated daily for a riod of 22 years. A mean annual area groundwater recharge of 11.5 mm a􀀀1 is calculated for the catchments, but spatial variations between 0 and 17.5 mm a􀀀1 occur depending on the variability of vegetation, soil and geomorphology. Groundwater recharge only occurred on a few days during the simulation period.
Developing an Antibody–Drug Conjugate Approach to Selective Inhibition of an Extracellular Protein

Antibody–drug conjugates (ADCs) are a growing class of therapeutics that harness the specificity of antibodies and the cell‐killing potency of small‐molecule drugs. Beyond cytotoxics, there are few examples of the application of an ADC approach to difficult drug discovery targets. Here, we present the initial development of a non‐internalising ADC, with a view to selectively inhibiting an extracellular protein. Employing the wellinvestigated matrix metalloproteinase‐9 (MMP‐9) as our model, we adapted a broad‐spectrum, nonselective MMP inhibitor for conjugation and linked this to a MMP‐9‐targeting antibody. The resulting ADC fully inhibits MMP‐9, and ELISA results suggest antibody targeting can direct a nonselective inhibitor.
Housing Ranking: a model of equilibrium between buyers and sellers expectations

The equilibrium set of housing units (alternatives) can be characterized from the standpoint of both the demander and the supplier. The current work describes an application of the multicriteria single price model to the ranking of alternatives. By a generalization of the single price model and from both viewpoints an efficiency index can be calculated. We demonstrate how, in equilibrium, the two viewpoints result inevitably in inverse orders of ranking. The model is illustrated by a sample of housing units in the city of Valencia, Spain.
Educational Preparation of Older Adults and Their Families for Retirement

The purpose of this qualitative case study, carried out in two phases, is to systematize the learning experiences and expectations of older adults and their families as they face approaching retirement, in Guadalajara, Mexico, 2012. The strategy implemented was an educational preparation for retirement. Six adults had already retired, two were soon to be retired and eight family members were chosen for this study. Data were collected using semi-structured interviews and a SQA-E format. The educational strategy was an interactive conference. A phenomenological analysis was made of the experiences recorded. The naturalistic criterial evaluation of learning experiences and expectations was applied before and after the educational intervention. Through this intervention, participants were made conscious of their problems, expressed the desire to improve certain aspects of their lives and continued educational preparation.
Tropospheric Ozone Pollution in Some Major Cities of West Africa and its Relationship with Atmospheric Circulations

This study utilizes a decade long (2005-2014) monthly data of Total Column Tropospheric Ozone (TCTO) in Dubson units to evaluate the spatial and temporal trend of LAO over some major cities of West Africa, namely Lagos, Accra, Niamey, Abuja, Bamako, Dakar, Agadez, Conakry, Kano, and Ouagadougou which are either capital cites or major commercial hubs, where the population ranges from 0.09 million (Agadez, Niger) to over 9 million (Kano and Lagos, Nigeria). The mean (long term average) of TCTO in Lagos (Nigeria) was 34.4±0.6 DU (α=5%) for the entire period, being the highest in all major cities of this study. The lowest TCTO, 30.4±0.5 DU (α=5%), occurred in Bamako (Mali). It was also observed that the concentrations of TCTO vary seasonally. The seasonal changes in TCTO was investigated by categorizing months of the year to very dry months of December, January, and February (DJF), onset of rainy season months of March, April, and May (MAM), wet season months of June, July, and August (JJA), and end of rainy season months of September, October, and November (SON). Seasonal mean of TCTO is higher in all cities, close to the coast during DJF, and cities, north of latitude 12o N, during MAM, compared to rest of the seasons. Elevated TCTO concentrations can be attributed to transport mixing, due to the flow direction of well-known wind regime over the study area. This was established from the analysis of correlation coefficient between the mean of zonal, meridional winds, vertical wind speeds and divergence, and TCTO over region.
Examining item-position effects in large-scale assessment using the Linear Logistic Test Model

When administering large-scale assessments, item-position effects are of particular importance because the applied test designs very often contain several test booklets with the same items presented at different test positions. Establishing such position effects would be most critical; it would mean that the estimated item parameters do not depend exclusively on the items’ difficulties due to content but also on their presentation positions. As a consequence, item calibration would be biased. By means of the linear logistic test model (LLTM), item-position effects can be tested. In this paper, the results of a simulation study demonstrating how LLTM is indeed able to detect certain position effects in the framework of a large-scale assessment are presented first. Second, empirical item-position effects of a specific large-scale competence assessment in mathematics (4 th grade students) are analyzed using the LLTM. The results indicate that a small fatigue effect seems to take place. The most important consequence of the given paper is that it is advisable to try pertinent simulation studies before an analysis of empirical data takes place; the reason is, that for the given example, the suggested Likelihood-Ratio test neither holds the nominal type-I-risk, nor qualifies as “robust”, and furthermore occasionally shows very low power.
CCD photometry and astrometry of visual double and multiple stars of the HIPPARCOS Catalogue - II. CCD photometry and differential astrometry of 288 southern "Intermediate” systems

We present photometric and astrometric data of about 280 visual double stars of the "intermediate” class, i.e. with angular separations mainly in the range 2″ and I passbands with an internal error of about 0.005 mag and an external accuracy of less than 0.03 mag. In addition, angular separations have been secured to an internal accuracy of 0.004″ and position angles to about 0.05° .