Miracle-dz/UniFAR-FTUs huggingface dataset:
Interactions maître-élèves en cours d’activités scientifiques à l’école maternelle : approche comparative

Cette étude s’intéresse à la formation des connaissances scientifiques en situation scolaire chez des jeunes enfants (école maternelle). Un cadre général d’analyse est proposé de façon à pouvoir rendre compte 1 ° des constructions cognitives auxquelles les enfants parviennent avec l’aide de leur maître et 2° de l’impact du système de référence des maîtres sur la manière dont ils interviennent auprès des enfants. Deux séquences d’enseignement sont comparées, l’une est conduite par un maître ayant une formation universitaire de haut niveau en physique, l’autre est conduite par un maître généraliste. Les analyses font apparaître que, bien que les objectifs d’apprentissage déclarés et que le corpus scientifique de référence aient été définis en commun, les activités conduites ne sont pas les mêmes ; il en est de même de la dynamique interactive.
ON THE CROSSROADS OF ENUMERATIVE GEOMETRY AND GEOMETRIC REPRESENTATION THEORY

The subjects in the title are interwoven in many different and very deep ways. I recently wrote several expository accounts [64-66] that reflect a certain range of developments, but even in their totality they cannot be taken as a comprehensive survey. In the format of a 30-page contribution aimed at a general mathematical audience, I have decided to illustrate some of the basic ideas in one very interesting example - that of HilbpC2, nq, hoping to spark the curiosity of colleagues in those numerous fields of study where one should expect applications.
Partition zeta functions, multifractal spectra, and tapestries of complex dimensions

For a Borel measure and a sequence of partitions on the unit interval, we define a multifractal spectrum based on coarse Holder regularity. Specifically, the coarse Holder regularity values attained by a given measure and with respect to a sequence of partitions generate a sequence of lengths (or rather, scales) which in turn define certain Dirichlet series, called the partition zeta functions. The abscissae of convergence of these functions define a multifractal spectrum whose concave envelope is the (geometric) Hausdorff multifractal spectrum which follows from a certain type of Moran construction. We discuss at some length the important special case of self-similar measures associated with weighted iterated function systems and, in particular, certain multinomial measures. Moreover, our multifractal spectrum is shown to extend to a tapestry of complex dimensions for two specific atomic measures.
Perceived Convenience in an Extended Technology Acceptance Model: Mobile Technology and English Learning for College Students.

Since convenience is one of the features for mobile learning, does it affect attitude and intention of using mobile technology? The technology acceptance model (TAM), proposed by David (1989), was extended with perceived convenience in the present study. With regard to English language mobile learning, the variables in the extended TAM and its explanatory power were analysed and antecedent factors that affected acceptance of English mobile learning were also examined. Participants were 158 college students from the middle part of Taiwan. After conducting English mobile learning with a PDA, data was collected by questionnaires. The results revealed that: a) perceived convenience, perceived ease of use and perceived usefulness were antecedent factors that affected acceptance of English mobile learning; b) perceived convenience, perceived ease of use and perceived usefulness had a significantly positive effect on attitude toward using; and c) perceived usefulness and attitude toward using had a significantly positive effect on continuance of intention to use. Overall, the extended TAM in the present study was effective at predicting and explaining the acceptance of English mobile learning. In the past, there were few mobile learning related studies examining the relationships between perceived convenience and other variables in the TAM. Therefore, the findings in the present study provide a reference for the future TAM and mobile learning related studies.
The role of mobile technologies in the teaching/learning process improvement in Portugal.

Over the past few years, there has been a large investment in information and communication technology in the teaching/learning process. In this context, mobile technologies, including smartphones and tablets emerge as an innovative tool associated with different methods and strategies. Mobile technologies are technological products and, nowadays, a very representative number of so-called "digital generation" own and use them in our day-to-day, in recreational and educational activities. In this way, the mobile technologies contribute to a teaching/learning process more motivating and personalized. The students' motivation increases when this technology is used, leading to greater participation, and, consequently, better and faster acquisition of concepts/skills. Collaborative actions and cooperation between student/student, student/teacher and student/class are increased when mobile devices are used in the classroom context. The use of mobile technologies and their implications for the teaching/learning process are some of the challenges that teachers face today as promoters and "drivers" in this process. To use the tools effectively an understanding is essential and therefore there are implications in teacher training not only for the use and application of technology, but for the underlying concepts and support. This paper examined the evolution of mobile technologies in Higher Education Institutions in Portugal between 2009/2010 and 2014/2015.
Are invasive plant species better competitors than native plant species? - evidence from pair-wise experiments

Invasive plants often appear to be more competitive than native species, but there have been few tests of this hypothesis. We reviewed published pair-wise experiments between invading and native plant species. Although the designs that have been used allow only limited inferences, the available data suggest that the effect of invasive species on native species is usually stronger than vice versa. Furthermore, mixtures of invasive and native species are generally less productive than monocultures of the native species, but not less than monocultures of the invasive species. However, the selection of invaders and natives for study has not been random, and the data could be biased towards highly competitive invaders and natives that are weaker than average competitors. We attempt to clarify confusion surrounding the concept of competitive superiority in the context of plant invasions, and we discuss the limitations of the methods that have been used to investigate competition between invasive and native species. To rigorously test the generality of the hypothesis that invaders are better competitors than natives we need to compare the effects of closely related native and invasive species on each other. We suggest that the influence of an invading species on total plant community biomass is an important clue in understanding the role of competition in a plant invasion. The role of competition in the establishment and naturalization stages of the invasion process may be very different from its role in the ‘‘outbreak’’ stage.
Understanding gender inequality in career success : a developmental network analysis

The purpose of this study is to explore the differences in the structure and content of men’s and women’s developmental networks. Thereby the study aims to gain insights on why men are often still more successful than women. A network analysis was conducted with 282 Dutch and German working professionals via an online survey. The analysis mapped respondents’ developmental network structures in terms of the network size, diversity and multiplexity. The results indicate that women build bigger networks than men, especially outside the organization. On these outside networks they also placed more importance than men while displaying a higher diversity here. Moreover, this study revealed that men only consider an extremely small amount of women their developers while women receive support from both male and female developer. The fact that men rarely consider women as their developers implies that many men do still not view women as an equal partner in the corporate world. Because of the high need for professionals in today’s economy, organizations and politicians need to change this attitude towards more value and acceptance for female professionals. Moreover, although women proved to have bigger developmental networks than men, they are not necessarily advantaged. Their strong focus on developers from outside the organization can encourage their career and life satisfaction, but likely hampers their advancement to higher positions inside the organization, for outside developers do not possess organizational information and resources.
Continuity and Change in Indian Capitalism

This paper explores the elements of continuity and change associated with Indian capitalism’s transition to its liberal phase after 1991. While acknowledging the significant changes since then, it is argued that the origins, nature, and consequences of Indian liberalization cannot be understood without recognizing the important continuities between the pre- and post-liberalization phases. Its colonial origins and the absence of a thoroughgoing agrarian transformation, and other stable features associated with these, remain crucial for explaining the key and sometimes very specific outcomes being generated by Indian capitalism. Indian capitalism after liberalization is less different than what it was before than might appear at first sight, and some of the difference is only a reinforcing of its inherent characteristics. Indian capitalism has always exhibited a strong tendency for generating uneven development. The change implied in that uneven development lay behind the shift from a dirigiste strategy to liberalization, which in turn has made the uneven development tendency stronger. The paper concludes with some reflections on the ‘Varieties of Capitalism’ perspective with reference to the case of Indian capitalism.
The Influence Of Individual Characteristics And Job Characteristics On Vocational School Teachers' Job Satisfaction In Province Of North Sumatera

This study explores the relationship between individual characteristics, job characteristics with job satisfaction of teachers in vocational schools at the Province of North Sumatera, Indonesia. The sample size of this study was obtained using the proportional random sampling which further resulting a total number of 166 teachers who were found having the expected qualification in Mechanical Engineering subject. The hypotheses tests based on the path analysis on the research model revealed that individual characteristics and job characteristics. The results showed that : 1) Individual characteristics directly affect the job satisfaction of vocational teachers in North Sumatra, and 2). Job characteristics directly affect the job satisfaction of teachers of vocational schools in North Sumatra.
PSYCHOLOGICAL PREDICTORS OF PREFERENCES FOR SONS OR DAUGHTERS

The relationship between a set of psychological variables reflecting psychological health and preferences for sex of offspring was investigated. Evolutionary theory suggests that parents may enhance their inclusive fitness by differentially investing in sons and daughters. It was hypothesized that a constellation of psychological variables representing psychological health would emerge and covary with measures of offspring sex preferences in a manner consis tent with the Trivers-Willard ( 197 3) model. Undergraduate subjects were administered a set of psychological tests and measures of off spring sex preferences. A psychological health factor emerged and covaried with offspring biases, but in an unhypothesized manner. Generally, highest levels of psychological health predicted no bias, medium levels a same-sex bias and low levels an oppositesex bias. Evolutionary and non-evolutionary explanations for these findings are discussed.
Physicochemical Composition and Microbiological Quality of Oggtt: Saudi Arabian Traditional Dried Fermented Milk

Oggtt or Madheer is fermented dried milk product traditionally processed by Bedouins in Saudi Arabia and other Arabian Gulf states. The present proposal had studied fourteen items of physiochemical composition and seven microbiological quality attributes of fifty commercial Oggtt samples collected from local markets of Jeddah, Saudi Arabia. Moreover, fifty selected isolates of Lactic Acid Bacteria (LAB) as a natural flora in Oggtt were identified by phenotype and biotype methods. Results obtained referred to relatively inferior solubility but the remaining items indicated high nutritious quality include detection of PUFA and essential amino acids. Oggtt was safe for human consumption based on absence of food borne pathogens in the samples examined. Oggtt contain unique LAB species. The impact of the study highlight to improve method of manufacture of Oggtt and call attention of the local dairy industry to produce Oggtt on an industrial scale to satisfy the growing awareness of consumers toward increased consumption of Oggtt.
The Dual Role of Intellectual Property Rights under Imitation and Innovation Driven Development I

The rise of East-Asian economies to signicant innovator countries suggests that imitation can be a source of knowledge transfer and can help to spur original R&D in emerging countries. At the same time, the empirical evidence reveals a positive relationship between growth and Intellectual Property Rights for countries with suciently large R&D sectors. In this paper, a North-South increasing variety model with endogenous southern research eciency is developed to explain these observations. The model predicts a threshold level of southern R&D costs above which two equilibria with positive southern R&D activity can exist. In the imitation equilibrium, the southern innovation output and welfare are low, the wage gap between North and South is high, and higher IPRs are associated with lower research activity and long-run welfare. In the innovation equilibrium, the southern research eciency, welfare and the product variety are high, and stronger IPRs are accompanied by more innovation and higher welfare in both regions. For countries which face research costs below the threshold, the imitation equilibrium ceases, and only the innovation equilibrium exists.
Nonparametric Estimation of the Short Rate Diffusion from a Panel of Yields

In this paper, we propose a nonparametric estimator of the short rate diffusion process using observations of a panel of yields. The proposed estimator can greatly reduce the bias of the nonparametric estimator proposed in Stanton (1997) that uses a single time series of short rate observations. Simulations confirm that the new method significantly attenuates the spurious nonlinearity of the drift function as documented in Chapman and Pearson (2000). We apply the method to estimate the U.S. short rate process using a panel of six Treasury yields. With 42 years’ daily observations of the panel of yields, the proposed drift function estimator achieves the same efficiency as the Stanton (1997) estimator based on 145 years of daily short rate observations. Finally, we show that the proposed estimator also has significant economic implications on the pricing of bonds and interest rate derivatives.
Do mutual funds gamble? Evidence from the skewness adjusting behavior of Fund Managers

We investigate the performance-induced gambling propensity of mutual fund managers by examining their tendency to adjust fund return skewness in response to interim performance. Managers of interim underperforming funds are more likely to increase fund return skewness in the second half of the year than their counterparts, especially in regions with favorable gambling environments or during market downturns. The evidence is robust to the control of managerial volatility-seeking behavior. We further reveal that fund managers alter fund return skewness through adjusting portfolio diversication or portfolio exposures to stocks with higher expected coskewness, and that
Food Insecurity and Coping Strategies among African American WomenLiving with HIV/AIDS on Antiretroviral Therapy in Rural Alabama

Background: As an extension of previous research in rural Alabama on HIV/AIDS, the purpose of this study is to assess the prevalence of food insecurity among African American women living with HIV/AIDS and examine the coping strategies they use to get food for themselves and their children. Methods: Quantitative and qualitative methods were used in the study. Two hundred and fifty African American women living with HIV/AIDS were recruited from two HIV/AIDS clinics and interviewed about food insecurity and coping strategies. Results: The findings showed that most of the women were food insecure and used numerous strategies to cope with food insecurity. The strategies included receiving food from food banks, supplemental Nutrition Assistance Program, receiving food from family members and friends, making cheaper meals, food from churches, and reducing the amount food cooked for meals. The food insecure women were more likely to be depressed and suffer from psychological distress than do others. Food insecurity is a barrier to medication adherence among these women living with HIV/AIDS. Conclusion: These findings suggested that addressing food insecurity should be a significant issue in HIV/AIDS treatment and prevention programs in the 21st Century. There is a need for continuous monitoring of food insecurity among people living with AIDS by health care providers in their education to promote adherence to medications and health well-being.
Real exchange rate and economic growth in Ghana

The study sought to determine effect of real effective exchange rate on economic growth in Ghana using annual data from 1984 to 2014. Data was sourced from the databases of World Bank, Bank of Ghana annual bulletins, and Ghana Ministry of Finance and Economic Planning. Using the ARDL cointegration estimation technique, the study found that real exchange rate and economic growth are cointegrated. The result suggests that real exchange rate exerts a positive and statistically significant effect on economic growth in both the long-run and short-run. Thus, there is the need to ensure exchange rate stability in the Ghanaian economy to help boost economic growth.
On the effects of non-tariff measures on Brazilian exports

This article proposes an alternative methodology for estimating the impacts of TBT/SPS measures on international trade, based on the recent literature of gravity models. A Heckman selection model is applied to the case of Brazilian exports, where the second stage equation is theoretically grounded on the Melitz model of heterogeneous firms. This equation highlights the role played by zero trade flows as well as firm heterogeneity, two factors usually omitted in standard specifications. Based on a simple Cournot model, a preliminary effort is made in order to elucidate the main microeconomic channels through which TBT/SPS measures may affect trade flows.
The features of the lateral flow in the cross-section slice of an elongated body : experimental approach

The aim of this work is to identify experimentally the features of the lateral flow in a cross-section slice of an elongated body during locomotion. We use an experimental approach in the context of the undulatory swimming of an elongated body. For that, two kinematic parameters of the fish’s body are taking into account, the body’s curvature and the cross-section diameter. We examine the lateral flow field for different elliptical cylinder-shape, and we perform the experiments using particle image velocimetry (PIV) technique.
Trends in seclusion and restraint use : a naturalistic study of psychiatrically hospitalized youths

The objective was to examine demographic characteristics associated with seclusion and restraint use among 442 psychiatrically hospitalized youths, and to quantify changing trends in the rates of these modalities of treatment over time following the 1999 implementation of federal regulations and an institutional quality-improvement program. All seclusion and restraint incidents (N= 5,929) occurring during a two-year interval (2000-2001) at a child and adolescent state psychiatric hospital were analyzed. Period prevalence values for seclusion and restraint use were 60.1% and 48.6%, respectively. Children admitted emergently, those belonging to minorities, and those under the age of 12 (seclusion only), were more likely to undergo seclusion or restraints. The total number of episodes and the cumulative duration of each decreased by 49.5% and 55.7% respectively, down to within the 99% confidence intervals of pre-specified target rates (p<0.001). The decreases were the result of fewer incidents and of shorter events (restraints only). There was a concurrent increase over time in the proportion of episodes associated with patient (but not staff) injuries (p<0.05), and with PRN medication use (p<0.001). Thus, it can be concluded that national reforms and/or institutional efforts can lead to seclusion and restraint reductions among psychiatrically hospitalized youths. The active elements of these interventions warrant further study and replication.
Morphological study of edible and non- edible mushrooms, district Swabi, Khyber Pakhtunkhwa, Pakistan

District Swabi is located in the province Khyber Pukhtoonkhawa, Pakistan coordinates with Sawabi is lies at ‘34°7'0N 72°28’0E’ with diversified ecosystem. The mushroom identification of Swabi has not been consider important in the past in this matter. Thus survey was conducted during 2014-15 in different areas of the District Swabi. Twenty two mushroom species belonging to 13 families and 18 genera were collected and investigated from the area. Among the collected mushroom species Polyporaceae was found as most predominant genus (25%) followed by Agaricaceae (20%). There is a great variation in all species because of habitats, seasons and
VITAMIN D LEVELS AMONG CHILDREN WITH SEVERE ACUTE MALNUTRITION.

Background: Children with malnutrition may have co-existing vitamin D deficiency (VDD), which may be severe. The main objective of study was to evaluate vitamin D levels among children with severe acute malnutrition. Methods: Serum vitamin D levels were evaluated in 100 children with severe acute malnutrition of age between 6 months to 60 months. Results: VDD (vitamin D deficiency) was found in 32 of 100 children (32%). The mean vitamin D level was 68.8 nmol/l. Conclusion: The high prevalence of VDD in malnourished children underlines the need for active surveillance and aggressive management.