Miracle-dz/UniFAR-FTUs huggingface dataset:
Development of a Combined GPS/GLONASS PPP Method

Precise Point Positioning (PPP) is a stand-alone precise positioning approach. As the quality of satellite orbit and clock products from analysis centers has been improved, PPP can provide more precise positioning accuracy and reliability. A combined use of Global Positioning System (GPS) and Global Orbiting Navigation Satellite System (GLONASS) in PPP is now available. In this paper, we explained about an approach for combined GPS and GLONASS PPP measurement processing, and validated the performance through the comparison with GPS-only PPP results. We also used the measurement obtained from the GRAS reference station for the performance validation. As a result, we found that the combined GPS/GLONASS PPP can yield a more precise positioning than the GPS-only PPP.
Multiple Job Holding in Canada and Education : Evidence from the Canadian Labour Force Survey

This paper explores the evolution over time in the marginal effects of age and education on moonlighting in Canada using the Labour Force Survey public-use files for the 1987/88, 1998/99, 2005/06, and 2013/14 periods. A discrete choice model is estimated by gender for the full sample and separately for each period. I find that the marginal effects of college and university education are larger in the later sample periods. The results also show significant differences across gender.
Factors affecting the intention to use Facebook to support problem-based learning among employees in a Taiwanese manufacturing company

This study offers an approach for understanding factors influencing employees’ acceptance and usage of Facebook as an assisted learning tool in Problem-based Learning (PBL). Based on the Technology Acceptance Model (TAM), the objectives of this study are to explore behavioral intention and the factors (perceived usefulness (PU), perceived ease of use (PEU), social influence (SI), perceived enjoyment (PE), concentration (C) and computer self-efficacy (CSE) affecting Facebook use for assisted PBL. A survey was distributed to 377 employees in a Taiwanese manufacturing company. Among the factors explored, perceived ease of use (PEU) is a stronger predictor of user influence compared to others. The study concludes with implications for researchers, educators and policy makers who are interested in using social software to support learning. Key words: Facebook, technology acceptance model, problem-based learning, social influence, employees in a Taiwanese manufacturing company.
The present paper is concerned with the simulation of turbulent boundary layer dynamics over a moveable seabed in random waves. A new theoretical approach for the evaluation of moveable bed roughness in spectral waves based on the grain-grain

The present paper is concerned with the simulation of turbulent boundary layer dynamics over a moveable seabed in random waves. A new theoretical approach for the evaluation of moveable bed roughness in spectral waves based on the grain-grain interaction idea is presented and tested against data from the laboratory and field. The new approach is combined with the methodology which assumes that the spectral wave condition can be represented by a monochromatic representative wave. Good results have been obtained, although further testing against data gathered in the North Sea is required.
Computerized Image Analysis of Mammographic Microcalcifications: Diagnosis and Prognosis

Breast cancer is the second leading cause of cancer deaths in women today (after lung cancer) and is the most frequently diagnosed cancer among women, excluding skin cancers. According to the American Cancer Society, an estimated of 230,480 new cancer cases are expected to be diagnosed in 2011; about 2,140 new cases are expected in men. In addition to invasive breast cancer, 57,650 new cases of in situ breast cancer are expected to occur among women in 2011. Of these, approximately 85% will be ductal carcinoma in situ (DCIS). An estimated 39,970 breast cancer deaths (39,520 women, 450 men) are expected in 2011. Death rates for breast cancer have steadily decreased in women since 1990, with larger decreases in women younger than 50 (a decrease of 3.2% per year) than in those 50 and older (2.0% per year), representing progress in both earlier detection and improved treatment.
Does WTI Oil Price Returns Volatility Spillover to the Exchange Rate and Stock Index in the US

The purpose of this paper is to examine whether the volatility of the West Texas Intermediate oil spot returns (WTIR) is affected by the Texas Light Sweet oil futures returns (FUR), the exchange rate returns between the US dollar and the Euro (ERR), and the S&P 500 energy index returns (EIR), and if any of those have changed over time. The daily data of the WTIR, the FUR, the ERR, and the EIR between the period of January 4, 2000 and September 30, 2009, were utilized. The empirical results of the multivariate GARCH of the BEKK model indicated that the WTIR is significantly affected by its own past volatility, and by the volatility of FUR, ERR, and EIR. Most likely, WTIR employs a structural conversion in our dummy variable for selected time points. This suggests that investors could use the FUR’s past volatility as a basis for WTIR purchase. In addition, the changes in ERR’s and EIR’s past volatility can be partially used as a basis for the same purpose.
Analysis of the French insurance market exposure to floods: a stochastic model combining river overflow and surface runoff

The analysis of flood exposure at a national scale for the French insurance market must combine the generation of a probabilistic event set of all possible (but which have not yet occurred) flood situations with hazard and damage modeling. In this study, hazard and damage models are calibrated on a 1995–2010 historical event set, both for hazard results (river flow, flooded areas) and loss estimations. Thus, uncertainties in the deterministic estimation of a single event loss are known before simulating a probabilistic event set. To take into account at least 90 % of the insured flood losses, the probabilistic event set must combine the river overflow (small and large catchments) with the surface runoff, due to heavy rainfall, on the slopes of the watershed. Indeed, internal studies of the CCR (Caisse Centrale de Reassurance) claim database have shown that approximately 45 % of the insured flood losses are located inside the floodplains and 45 % outside. Another 10 % is due to sea surge floods and groundwater rise. In this approach, two independent probabilistic methods are combined to create a single flood loss distribution: a generation of fictive river flows based on the historical records of the river gauge network and a generation of fictive rain fields on small catchments, calibrated on the 1958–2010 Meteo-France rain database SAFRAN. All the events in the probabilistic event sets are simulated with the deterministic model. This hazard and damage distribution is used to simulate the flood losses at the national scale for an insurance company (Macif) and to generate flood areas associated with hazard return periods. The flood maps concern river overflow and surface water runoff. Validation of these maps is conducted by comparison with the address located claim data on a small catchment (downstream Argens).
The Role of Emotions in Leadership

Emotions play an important role in the field of leadership. The intelligent use of emotions may be beneficial for leaders in achieving success. In fact, good use of emotions has been seen as a prerequisite for effective leadership. Leaders with high emotional competencies are perceived as more efficient by their followers. Besides, the use of emotional intelligence (EI) was found to be linked with transformational leadership. Furthermore, leaders’ EI was found to be affecting followers’ and organizational outcomes. Thus, we provide a selective review on the relationship between emotions and leadership. Our findings showed that EI is essential for successful leadership as it provides many benefits to leaders. With the use of EI, leaders could manage the team intelligently, handle difficult situations properly and reduce their stress effectively. Hence, we identified that it is necessary for researchers to further study the links between EI and leadership to gain the most benefits from it. We conclude with a discussion on the theoretical and practical implication, as well as some recommendation for future research with the promising use of EI in leadership development.
The Arctic oscillation signature in the wintertime geopotential height and temperature fields

The leading empirical orthogonal function of the wintertime sea‐level pressure field is more strongly coupled to surface air temperature fluctuations over the Eurasian continent than the North Atlantic Oscillation (NAO). It resembles the NAO in many respects; but its primary center of action covers more of the Arctic, giving it a more zonally symmetric appearance. Coupled to strong fluctuations at the 50‐hPa level on the intraseasonal, interannual, and interdecadal time scales, this “Arctic Oscillation” (AO) can be interpreted as the surface signature of modulations in the strength of the polar vortex aloft. It is proposed that the zonally asymmetric surface air temperature and mid‐tropospheric circulation anomalies observed in association with the AO may be secondary baroclinic features induced by the land‐sea contrasts. The same modal structure is mirrored in the pronounced trends in winter and springtime surface air temperature, sea‐level pressure, and 50‐hPa height over the past 30 years: parts of Eurasia have warmed by as much as several K, sea‐level pressure over parts of the Arctic has fallen by 4 hPa, and the core of the lower stratospheric polar vortex has cooled by several K. These trends can be interpreted as the development of a systematic bias in one of the atmosphere's dominant, naturally occurring modes of variability.
Evidence-based practices of promoting entrepreneurship education in higher education institutions in Africa

This research applies the changing of cognitive mechanisms of University students through Entrepreneurship Education (EE). The study hypothesises that entrepreneurial orientation (achievement orientation, personal control, innovation and self-esteem) improves after completing the entrepreneurship module. The context of this research involves undergraduate commerce students from the University of the Western Cape (UWC) in South Africa. The study involves quantitative research using questionnaires through a longitudinal approach. The research design consists of a pre-test, post-test and post-test after the intervention. The impact of the training intervention was assessed over a 12 month period based on a randomised control design. This study indicates that entrepreneurial orientation was influenced through this Entrepreneurship module. The practical implications of this study emphasises the importance of training approaches that are based on empirical research. The uniqueness of this paper lies in the pedagogy used that allows the effectiveness of assessing a training program.
Does Implementing an Emotional Intelligence Program Guarantee Student Achievement

Being a 21 century learner may require a shift in the education paradigm. To be successful students may need to possess a different type of intelligence. Cherniss (2001), Goleman (1995), and O’Neil (1996), suggest that the key to positive life outcomes might consider emotional intelligence as more important than intellectual quotient ( IQ). Emotional intelligence is associated with positive life outcomes, as seen in several studies conducted on emotional intelligence in business leadership, educational leadership, achievement, and life success. The purpose of this study was to compare the implementation of a positive behavior support (PBS)system (The Leader In Me [TLIM]) that embeds emotional competencies throughout an entire learning community with its affect on student achievement. More than 1,200 schools across the United States use TLIM approach. The schools chosen for this study were located solely in the state of Texas. Data were obtained from the publicly available archival datasets from the Texas Education Association (TEA). A causalcomparative analysis using a one-way ANOVA was used to determine whether a significant correlation existed between schools that used TLIM and those that did not. Results indicated no statistically significant difference between the two school groups. Additional analysis was performed to examine the level of implementation. Schools that had reached Lighthouse status demonstrated a significantly higher achievement level in ELA and mathematics compared to schools that did not use TLIM.
From Occupations to Embedded Skills: A Cross-Country Comparison

This paper derives the skill content of 30 countries, ranging from low-income to high-income ones, from the occupational structure of their economies. Five different skills are defined. Cross-country measures of skill content show that the intensity of national production of manual skills declines with per capita income in a monotonic way, while it increases for non-routine cognitive and interpersonal skills. For some countries, the analysis is able to trace the development of skill intensities of aggregate production over time. The paper finds that although the increasing intensity of non-routine skills is uniform across countries, patterns of skill intensities with respect to different forms of routine skills differ markedly.
Uncovering Chinese Stereotypes and Their Influence on Adolescent Male Makeup Purchasing Behavior

The consumption of makeup amongst males has not been fully explored by academics nor catered by the marketplace. Therefore, the desires of users are unsatisfied and as their existence are virtually unrecognized. Purchasing is the result of interactions between consumers and their respective societies. This qualitative study aims to reveal male Chinese adolescent makeup purchase behavior by exploring the impact of stereotyping on this emerging segment. Stereotyping contributes to the development of social categorization and can also be an external factor which influence purchasing decisions. The occurrence of makeup being stereotyped as being feminine is a key variable of this study. Findings pinpointed China as being a conservative market with strong traditional values. Not only was China an unfavorable environment in which to develop male makeup as a new life style, but stereotyping was also a strong influencer of social categorization. Even though stereotyping heavily influenced male Chinese adolescent purchasing behavior, it did so in a positive way, guiding adolescents to acknowledge their purchase desires and to explore new values in their conservative society. The lack of research into the male purchasing process was a key inspiration of this study. This study identified possible further research areas for academics and marketeers, especially in terms of male consumer behavior development.
Directors’ share dealings and corporate insolvencies: evidence from the UK

This paper investigates the relation between insider trading and the likelihood of insolvency with a specific focus on the directors’ sale and purchase transactions preceding insolvency. We use a unique data set on directors’ dealings in 474 non-financial UK firms, of which 117 filed for insolvency, over the period 2000–2010. We show that the directors of insolvent firms increase their purchase transactions significantly as the insolvency approaches. The results also reveal a significant relation between three different measures of insider trading activity and the likelihood of insolvency, which is observed to be positive only during the last six-month trading period. The relation is negative for the earlier trading periods. While the earlier purchase transactions appear to be motivated by superior information held by insiders, the purchase trades closer to the insolvency date are possibly initiated by directors’ motives to influence the market's perception of the firm in an attempt to avert or delay insolvency.
The Effect of Working Capital Management on Corporate Profitability: Evidence from Nigerian Food Product Firms

The paper examines the impact of working capital management on corporate profitability through the periods of 2008 to 2012. The total of seven firms listed on the floor of the Nigerian Stock Exchange was studied, using secondary data generated from annual reports and accounts of the sampled companies and the Nigerian Stock Exchange Fact book. The data were analyzed by means of descriptive statistics and GLS regression analysis using STATA 11. The study finds a positive relationship among Average Collection Period (ACP), Current Ratio (CR) and the size of the firm (LOGSIZE) with Profitability and a negative relationship with Inventory Turnover Period (ITP), Average Payment Period (APP). The paper therefore recommends that cash collected should be re-invested into short-term investment to generate profits and fund left idle in the cash or excessive liquidity is costly and do not lead to profitability.
Use of Leukocyte-and Platelet-Rich Fibrin for Bone Regeneration: A Systematic Review

Introduction: Leukocyte- and platelet- rich fibrin (L-PRF) is a fibrin matrix in which the platelet cytokines, growth factors and cells are trapped and this material has been recruited in reconstruction of various defects. The aim of this study was to systematically review of the published data on the effectiveness of using L-PRF on regeneration of bone defects in oral and maxillofacial surgeries. Materials and Methods: Medline and Cochrane Central databases were searched for related articles up to and including August 2015. Being English, having ≥ four weeks follow-up, and clinical, radiographic, histological and histomorphometric assessments were the inclusion criteria. Results: Twenty-four animal studies and 45 human trials were included that reported the rate of new bone formation (NBF). Also, 38 human reports with low levels of evidence to list evaluating various applications of L-PRF in oral and maxillofacial reconstructions were assessed. Using L-PRF either solely or mixed in human trials was evaluated and divided into six groups of sinus floor augmentation and guided bone regeneration (GBR) technique, socket preservation, periodontal intra-bony defects (PID) regeneration, peri-apical and endo-periodontal defects treatment, peri-implant bone regeneration and treatment of bisphosphonate-related osteonecrosis of the jaw (BRONJ). Moreover, other uses of L-PRF with bone regeneration purposes in oral and maxillofacial surgeries were discussed. Conclusion: As a consequence, although L-PRF either solely or mixed showed challengeable outcomes in animal studies, it was shown to be effective used to accelerate and enhance new bone formation in human studies. However, future clinical trials in some treatment areas are needed with larger sample sizes and long follow-ups to arrive at an evidence-based conclusion.
New constraints on the formation and settling of dust in the atmospheres of young M and L dwarfs

We obtained medium-resolution near-infrared spectra of seven young M9.5-L3 dwarfs classified in the optical. We aim to confirm the low surface gravity of the objects in the NIR. We also test whether atmospheric models correctly represent the formation and the settling of dust clouds in the atmosphere of young late-M and L dwarfs. We used ISAAC at VLT to obtain the spectra of the targets. We compared them to those of mature and young BD, and young late-type companions to nearby stars with known ages, in order to identify and study gravity-sensitive features. We computed spectral indices weakly sensitive to the surface gravity to derive near-infrared spectral types. Finally, we found the best fit between each spectrum and synthetic spectra from the BT-Settl 2010 and 2013 models. Using the best fit, we derived the atmospheric parameters of the objects and identify which spectral characteristics the models do not reproduce. We confirmed that our objects are young BD and we found NIR spectral types in agreement with the ones determined at optical wavelengths. The spectrum of the L2-gamma dwarf 2MASSJ2322-6151 reproduces well the spectrum of the planetary mass companion 1RXS J1609-2105b. BT-Settl models fit the spectra and the 1-5 $\mu$m SED of the L0-L3 dwarfs for temperatures between 1600-2000 K. But the models fail to reproduce the shape of the H band, and the NIR slope of some of our targets. This fact, and the best fit solutions found with super-solar metallicity are indicative of a lack of dust, in particular at high altitude, in the cloud models. The modeling of the vertical mixing and of the grain growth will be revised in the next version of the BT-Settl models. These revisions may suppress the remaining non-reproducibilities.
New Trends and Issues

The objective of this paper is to test the relation between the logistics information quality (LIQ) and logistics information system (LIS) use behaviour among logisticians of the automotive and aerospace industries in Morocco. We developed a theoretical model based on literature review and performed a survey of 15 logisticians from six different companies. Finally, we made an exploratory quantitative analysis on the basis of the first data collect, principal component analysis – using SPSS. Confirmatory factor analysis was done using AMOS. The obtained results indicate that LIQ occupies a central and dominating place in the Moroccan context. Also, this variable directly determines LIS use among logisticians. The research also establishes a theoretical contribution and a practical one. Managers in the logistics & IT department in the Moroccan automotive and aerospace industries can utilise our new model to undertake managerial actions and increase the level of LIS use, by improving the LIQ.
An Embedding Theorem given by the Modulus of Variation

In [5] and [6] we extended an interesting theorem of Medvedeva [7] pertaining to the embedding relation $H^\omega\subset \Lambda BV$, where $\Lambda BV$ denotes the set of functions of $\Lambda$-bounded variation. Our theorem proved in [6] unifies the notion of $\varphi$-variation due to Young [8] and that of the generalized Wiener class $BV(p(n)\uparrow)$ due to Kita and Yoneda [4]. In this note we generalize the theorem proved in [6] such that it will use the concept of the modulus of variation due to Chanturia [2]. For further references pertaining to the new notion mentioned above we refer to an interesting paper by Goginava and Tskhadaia [3]. We also show that our new theorem includes our previous result as a special case.
Occurrence of salmonella spp. serotypes isolated from the poultry exploitations in n’djamena and doba towns-chad

The aim of this study was to assess the prevalence of different serotypes of Salmonella spp. strains in poultry farming in N’Djamena and Doba towns. The strains were isolated on Hektoen agar medium, then identified through API 20E gallery, and serotyped by the direct agglutination technique on blade according to Kauffmann and White scheme. From a total of 1090 samples analyzed, 40 Salmonella strains corresponding to a prevalence of 3.67 % were identified, and regrouped into 11 serotypes: Salmonella Idikan (20%, n=8), Salmonella Anatum (15%, n=6), Salmonella Mbandaka (12.5%, n=5), Salmonella Limete, Salmonella Infantis, Salmonella Derby (10%, n=4), Salmonella Virchow (7.5%, n=3), Salmonella Gallinarum, Salmonella Choleraesuis (5%, n=2), Salmonella Paratyphi A, Salmonella Enteritidis (2.5%, n=1). Each sample taken apart contained at least one serovar, indicating that poultry farming in Chad is seriously affected by Salmonella. Moreover, Salmonella Paratyphi A and two strains of Salmonella Choleraesuis and peculiar respectively infecting man and pig were also isolated, probably due to fecal contamination of poultry food or water. These results reveal for the first time, a wide distribution of Salmonella spp. serovars in modern and traditional poultry farming sectors in N’Djamena and Doba in Chad.