Miracle-dz/UniFAR-FTUs huggingface dataset:
Disentangling star formation and AGN activity in powerful infrared luminous radio galaxies at 1 < z < 4

High-redshift radio galaxies present signs of both star formation and AGN activity, making them ideal candidates to investigate the connection and coevolution of AGN and star formation in the progenitors of present-day massive galaxies. We make use of a sample of 11 powerful radio galaxies spanning 1 < z < 4 which have complete coverage of their spectral energy distribution (SED) from UV to FIR wavelengths. Using Herschel data, we disentangle the relative contribution of the AGN and star formation by combining the galaxy evolution code PEGASE.3 with an AGN torus model. We find that three components are necessary to reproduce the observed SEDs: an evolved and massive stellar component, a submm bright young starburst, and an AGN torus. We find that powerful radio galaxies form at very high-redshift, but experience episodic and important growth at 1 < z < 4 as the mass of the associated starburst varies from 5 to 50% of the total mass of the system. The properties of star formation differ from source to source, indicating no general trend of the star formation properties in the most infrared luminous high-redshift radio galaxies and no correlation with the AGN bolometric luminosity. Moreover, we find that AGN scattered light have a very limited impact on broad-band SED fitting on our sample. Finally, our analysis also suggests a wide range in origins for the observed star formation, which we partially constrain for some sources.
NUTRITIONAL STATUS OF PRESCHOOL CHILDREN INFECTED WITH GIARDIA INTESTINALIS

Giardia intestinalis is the most common intestinal parasite in human worldwide. It can produce a wide spectrum of clinical manifestations. In order to assess the nutritional status of preschool children infected with Giardia intestinalis, a cross sectional study was made in Marvdasht city, Fars Province, Southern Iran. A total of 337 preschool boys and girls aged 3-6 years were randomly selected for stool examination of intestinal parasites as well as measurement of height, weight, head and arm circumferences. A total of 77 individuals were infected with G. intestinalis. Seventy-one individuals who had only G. intestinalis and 229 with no parasitic infections were selected as infected and control groups, respectively. Z-Score of 2SD was used as cut off point of malnutrition. A total of 9 (12.7%) of infected children and 18 (7.9%) of non infected individuals had a height for age Z-score (HAZ) below -2SD. Eight (11.3%) of former group had a weight for age Z-score (WAZ) under-2SD. In control group 4.4% of preschool children had WAZ under-2SD. 4.2% of infected children had a weight for height Z-score (WHZ) under-2SD but none of the controls had it. Statistical analysis showed a significant difference in height, weight, head circumference, HAZ, and WAZ between infected and control children (P<0.05). Also, HAZ and WAZ, was significantly different between these two groups, but not for WHZ. A higher infection with G. intestinalis in the children with lower parents’ education was observed. However the distribution of malnutrition was not significantly different between boys and girls. In conclusion the present study indicated that giardiasis retarded growth of preschool children in this region.
Stumble upon hidden knowledge : microblogging in organizations

In this research, effects on knowledge sharing by the social medium microblogging have been explored. Using pilots with the microblogging platform WorkVoices and a study of the microblogging platform Yammer, the research question “What effect does the use of organizational microblogging have on knowledge sharing? ” has been answered. The research showed a significant increase in the availability and the intention of participants to share knowledge. Knowledge sharing using microblogging scored high on potential and was valued positive, though the scores for the applications, WorkVoices and Yammer, were lower. This research showed that organizational microblogging has the competence to reveal hidden knowledge and information by a simple post, while using an accessible method.
Mathematical foundations of and empirical investigations into the dynamic of top positions: Stabilization Effect, Reversed Matthew Effect, and Heraclitus Effect

The performance differences between successively ranked individuals tend to increase towards the top. However, the mathematical foundations of this effect are still largely untapped. This article will focus on developing such foundations. It will also be shown that the effect is stable for various natural distributions of eminent achievements. Three new predictions about the dynamics of top positions are formulated and tested with two samples from the world of sports: the best male chess players (individual sport) and male national soccer teams. The stabilization effect describes the phenomenon that the stability of ranks is higher among the top ranks. The reversed Matthew effect asserts that achievement gains among elite players and elite teams are positively correlated with their ranks (i.e. diminishing towards the top). However, in contrast, the Heraclitus effect predicts that the performance gains among the top ranks are nevertheless bigger than what can be mathematically expected from the position in the ranking. All three effects can be empirically corroborated.
Public Education Expenditure, Growth and Welfare

In this paper we study the quantitative macroeconomic effects of public education spending in USA for the post-war period. Using comparable measures of human and physical capital, from Jorgenson and Fraumeni (1989, 1992a,b), we calibrate a standard dynamic general equilibrium model where human capital is the engine of long-run endogenous growth and government education spending is justified by externalities in human capital. Our base calibration, based on moderate sized human capital externalities, suggests that public spending on education is both growth and welfare promoting. However, given that public education spending crowds-out private consumption, the welfare maximising size of the government is less than the growth maximising one. Our results further suggest that welfare gains, as high as four percent of consumption, are obtainable if the composition of public spending can be altered in favour of education spending relative to the other components of total government spending.
Antibacterial effect of Rosemary and Clove oil on Staph. aureus in minced meat

The present study was designed to investigate antimicrobial and antioxidant activity of clove oil and rosemary oil for their effects on the growth and survival of Staphylococcus aureus artificially inoculated into minced beef. Fresh minced beef samples were inoculated with (~ 106 CFU/ml) (6 log CFU/g) of Staph. aureus Initial counts of Staph. aureus in minced beef samples immediately after inoculation were (10.86±5.18 log CFU/g). Essential oils of clove (Syzygium aromaticum) and rosemary (Rosmarinus officinalis) (%v/g) were added to the minced beef samples to achieve final concentrations of 1, 1.5 and2%. Sensory (color, odor and texture) and bacteriological (Staph. aureus counts) analyses were conducted after 1, 2, 3, 4.5. 6. 24 hrs, 2nd, 3rd and 6th day during cold storage at 4°C. clove oil (2%) group give the best effectiveness with a significant advantage in extend shelf-life of refrigerated minced meat to 5 days compared to all groups specially control ones (3 days).
Relative timing and variability of atmospheric methane and GISP2 oxygen isotopes between 68 and 86 ka

The global biogeochemical cycle of methane has received wide attention because of methane's role as a greenhouse gas. Measurements of methane in air trapped in Greenland ice cores provide a high‐resolution record of methane levels in the atmosphere over the past ∼100 ka, providing clues about what controls the methane cycle on geologic timescales. Remarkable similarity between local temperature recorded in Greenland ice cores and changes in global methane concentrations has been noted in previous studies, with the inference that the local temperature variations have global significance, but the resolution of sampling and measurement precision limited fine‐scale comparison of these variables. In this work a higher‐precision (∼2 ppb) methane data set was obtained from the Greenland Ice Sheet Project 2 (GISP2) ice core for the time interval between 86 and 68 ka, encompassing three large abrupt warming events early in the last glacial period: Dansgaard‐Oeschger (D‐O) events 19, 20, and 21. The new data set consists of duplicate measurements at 158 depths, with average time resolution of 120 years. Such detailed measurements over D‐O 21, the longest in Greenland records, have not yet been reported for other ice cores. The new data set documents short‐term variability (∼20 ppb typical amplitude), which is remarkably persistent, and in many cases similar features are observed in the most detailed published δ18Oice record. High‐precision GISP2 δ15N data show that changes in Greenland temperature are synchronous with the methane variations at the onset of D‐O events 19, 20, and 21, supporting previous results from the Greenland Ice Core Project ice core for D‐O 19 and 20. Cross‐spectral analysis quantifies the extremely close similarity between the new methane record and the δ18Oice record. Because methane sources are widely distributed over the globe, this work further validates δ18Oice at Greenland summit as a geographically broad climate indicator on millennial to multicentennial timescales.
Exploring the Usefulness of School Education about Risks on Social Network Sites: A Survey Study

The growing popularity of social network sites (SNS) is causing concerns about privacy and security, especially with teenagers, since they show various forms of unsafe behavior on SNS (e.g., Lenhart and Madden 2007). It has been put forth by researchers, teachers, parents, and teenagers that school is ideally placed to educate teens about risks on SNS and to teach youngsters how to use SNS safely. Privacy attitudes also need to be taken into account if we want to decrease the amount of unsafe behavior. However, there is a lack of research that focuses on the role and impact of school education on privacy attitudes or actual safe behavior on SNS. To counter this shortcoming, a survey study was set up with 638 pupils exploring teenagers’ attitudes towards privacy on SNS. The first question was: Do they care about their privacy? Next to that, the extent to which they show unsafe behavior on SNS was questioned. Finally, the impact that school education has on both privacy care and the safety of teenagers’ behavior on SNS was studied. It was found that teenagers do not care much for their privacy, and that a lack of privacy care leads to unsafe behavior on SNS. However, school education has a positive impact on privacy care and by raising privacy care it also has an indirect positive impact on the safety of pupils’ behavior. Our results suggest therefore that more efforts for school education about safer use of SNS are important, especially since the attention for the topic in schools is found to be still extremely limited and not organized in the curriculum. Practical implications are discussed.
Decomposition of Socio-economic Determination of Income-related Health Inequality by Health Dimensions

When analysing income-related inequality in health, it is commonly ignored that the results may vary by different dimensions of health. The present study applies recently suggested methodologies to measure income-related inequality in the overall index of the 15D instrument as well as the contributions from each of its 15 dimensions. Further, the relative impact of socio-demographic determinants on income-related health inequality is measured using established methodology. These two methodologies are integrated in order to decompose the contributions from socio-economic determinants to each of the 15 dimensions. It is found that these relative contributions vary substantially across dimensions. For policy purposes this information indicates on which aspects of health there are potential improvements in inequalities in health. JEL classification: D30; D31; I10; I12.
Growth and inflation: Estimation of threshold point for Nepal

This article is primarily meant to estimate threshold level of inflation in Nepal using annual data for the period 1975-2010. The threshold value of inflation is found to be 6% for Nepal. Beyond that level of inflation rate, higher or lower than the threshold value, the economic growth can be jeopardized. Looking specifically at Nepal’s economic and inflation performance, the less than robust link between the two variables is not surprising, given the current structure of the economy and factors which influence inflation. DOI: http://dx.doi. org/10.3126/ejdi.v13i0. 7216 Economic Journal of Development Issues Vol.13 & 14 2011, pp.131-138
Central limit theorems for linear spectral statistics of large dimensional F-matrices

In many applications, one needs to make statistical inference on the parameters defined by the limiting spectral distribution of an F matrix, the product of a sample covariance matrix from the independent variable array (Xjk)p×n1 and the inverse of another covariance matrix from the independent variable array (Yjk)p×n2 . Here, the two variable arrays are assumed to either both real or both complex. It helps to find the asymptotic distribution of the relevant parameter estimators associated with the F matrix. In this paper, we establish the central limit theorems with explicit expressions of means and covariance functions for the linear spectral statistics of the large dimensional F matrix, where the dimension p of the two samples tends to infinity proportionally to the sample sizes (n1, n2). Moreover, the assumptions of the i.i. d. structures of arrays (Xjk)p×n1 , (Yjk)p×n2 and the restriction of the fourth moments equaling 2 or 3 made in Bai and Silverstein (Ann. Probab. 32 (2004) 553–605) are relaxed to that arrays (Xjk)p×n1 and (Yjk)p×n2 are independent respectively but not necessarily identically distributed except for a common fourth moment for each array. As a consequence, we obtain the central limit theorems for the linear spectral statistics of the beta matrix that is of the form (I + d · F matrix)−1, where d is a constant and I is an identity matrix. Résumé. Dans beaucoup d’applications, on cherche à effectuer une inférence statistique sur des paramètres définis à partir de la mesure spectrale d’une F -matrice, matrice obtenue comme le produit d’une matrice de covariance du tableau de variables indépendantes (Xjk)p×n1 et de l’inverse d’une autre matrice de covariance (Yjk)p×n2 . Les variables sont soient toutes réelles soient complexes. Il est donc utile d’étudier les distributions asymptotiques des estimateurs de ces paramètres associés à la F matrice. Dans cet article, nous établissons des théorèmes centraux limites pour les statistiques linéaires du spectre de la F -matrice dans la limite où p,n1, n2 tendent vers l’infini en restant de même ordre, et donnons des formules exactes pour leurs moyennes et covariances. De plus, l’hypothèse que les variables (Xjk)p×n1 et (Yjk)p×n2 sont i.i. d. et la restriction que le quatrième moment est égal à 2 ou 3 comme dans Bai et Silverstein (Ann. Probab. 32 (2004) 553–605) sont affaiblies de la manière suivante; les coefficients (Xjk)p×n1 et (Yjk)p×n2 sont indépendants mais non nécessairement équidistribués, pourvu qu’ils aient le même quatrième moment dans chaque tableau. Par conséquent, nous obtenons le théorème de la limite centrale pour les statistiques linéaires de la matrice beta qui est de la forme (I + d · F matrix)−1, où d est une constante et I la matrice identité. MSC: Primary 15A52; 60F05; secondary 62H10
Arterial hypertension and pulse pressure in school-age children

Materials and methods. In total 848 children in 10–17 years of age (mean age – 13.9 ± 0.06 years, 45.4 % boys and 54.6 % girls) from urban and rural areas of Chernivtsi region were examined in schools during screening for elevated blood pressure (BP). School-based ambulatory seated BP was measured by oscillometric automated recording devices with the age selection of cuffs. Elevated systolic (SAP) or diastolic (DAP) pressure was diagnosed in those children with indicators above the 95th percentile of age norms in accordance with the national normative values. In cases of elevated BP the measurements were verificated by aneroid device.
Documents de Treball de l ’ IEB 2014 / 13 GENDER DIFFERENCES AND STEREOTYPES IN THE BEAUTY *

Recent literature has emphasized that individuals display different depths of reasoning when playing games. In this paper, we explore gender differences in strategic sophistication and study whether these differences are endogenous. We report results from two different experiments employing the beauty contest. In the first, large study, we show that females react very strongly to incentives to the extent that gender differences disappear when a monetary prize is awarded. In the second study, we use a within subject design to analyze how depth of reasoning varies with gender priming and the gender composition of the set of players. We corroborate that females display higher levels of sophistication and even overtake males when incentives are provided and gender is primed. On the other hand, males who believe that females are better in the game display higher sophistication when playing against females. JEL Codes: C72, C91, D81, J16
Does One Size Fit All? Investigating Different Empowerment Orientations in the Heterogeneous Workforce of the Swedish Retail Sector

Empowerment research and practice is guided by the idea that empowered employees perform better due to a greater sense of self-efficacy and capability. Underlying this idea, there often seem to be two tacit, unexamined assumptions: first, that employees generally would prefer an empowered workplace to a less empowered one; and second, that all employees can be empowered by means of the same measures and changes as defined by empowerment research. The main research question asked in this study is whether those aspects typically associated with structural and psychological empowerment efforts at the workplace are indeed perceived as desirable and positive by all types of employees. Employees’ attitudes toward the success of empowerment efforts, and the relevance of such attitudes, are investigated by analyzing survey data from 268 employees in the Swedish retail sector. Results indicate that age and work intensity (part-time vs. full-time) as well as cohabitation have significant impacts on how empowerment efforts are viewed by employees in the sample.
Reduced Hydrophobicity of the Minor Groove Intercalation Loop is Critical for Efficient Catalysis by Cold Adapted Uracil-DNA N-Glycosylase from Atlantic Cod

The minor groove intercalation loop (leucine-loop) in Uracil-DNA N-glycosylases (UNGs) undergoes significant conformational changes upon substrate interaction. Previous studies have shown that the cold adapted Atlantic cod UNG (cUNG) possesses a tenfold higher catalytic efficiency than human UNG (hUNG). A sequence alignment of the two enzymes revealed amino acid substitutions in and near the leucine-loop of cUNG which may increase the elasticity of the loop and thus explain the observed higher catalytic efficiency of cUNG compared to hUNG. In order to investigate this hypothesis we constructed five single and four multiple mutants of cUNG with cod to human UNG substitutions and characterised them by kinetic experiments at three different temperatures (15, 22 and 37°C) and Differential Scanning Calorimetry (DSC). The results showed that the mutations affected the kcat more than the KM, and mutants with apparent reduced hydrophobic properties (A266T, V267A, A266T/V267A and A266T/ V267A/A274V) showed increased or equivalent kcat to cUNG, while mutants with predicted increased hydrophobicity (A274V, H275Y, L279F, A266T/V267A/A274V/H275Y and A266T/V267A/A274V/H275Y/H250Q) showed reduced kcat compared to cUNG. Thus, mimicking the amino acid composition of the leucine-loop in hUNG reduces the activity of cUNG. The DSC experiments were performed in order to identify a potential increase in the overall stability of the mutants as a result of altered hydrophobicity of the leucine-loop. However, the results showed a slight reduction in the overall stability for mutants with increased kcat and increased stability for mutants with reduced kcat. We suggest these results arise from a need to compensate for a potential increased/reduced elasticity of the leucine-loop which is introduced by the amino acid substitutions. This study confirms the suggested importance of the leucine-loop for efficient catalysis of UNG and shows that it is possible to alter the catalytic capacity of this enzyme by manipulating the amino acid composition of this loop.
Period changes in W UMa-type eclipsing binaries: DK Cygni, V401 Cygni, AD Phoenicis and Y Sextantis

We present a period analysis of the four well- known W UMa-type eclipsing binaries DK Cyg (P = 0: 47), V401 Cyg (0: d 58), AD Phe (0: 38) and Y Sex (0: d 42). Several new times of minimum light, recorded photo- electrically, have been gathered. Analysis of all available eclipse timings of the DK Cygni and V401 Cygni has con- rmed a signicant increase in period of 1:15 10 10 and 1:48 10 10 day cycle 1 , respectively. A simultaneous so- lution of the B;V and R light curves was computed for V401 Cyg using the Binary Maker 2.0 synthetic lightcurve software. This solution indicates that V401 Cyg is in con- tact with a ling factor of 46%. The period of AD Phe seems to be constant. Period changes of Y Sex could be explain by a light-time eect caused by a third body in an eccentric orbit with a period of 58 years.
Environmentally assisted cracking and hydrogen diffusion in traditional and high-strength pipeline steels

Abstract This article deals with the risk of environmentally assisted cracking of steel structures that are kept under cathodic protection (CP). The experimental results collected on both hydrogen diffusion and hydrogen embrittlement (HE) of high-strength low-alloy (HSLA) steels under CP are discussed. Hydrogen diffusion was evaluated by permeation experiments and a scanning photoelectrochemical current technique, as a function of microstructure orientation, on both loaded and unloaded specimens. HE tests were carried out under constant load, slow strain rate (SSR tests), and slow bending conditions. Tests were also carried out on several grades of HSLA steel having different microstructures. The results confirm that HE in artificial seawater under CP can occur in steel with tensile yield strength in the range of 400–660 MPa only in the presence of high cathodic polarization and continuous plastically straining conditions. HE susceptibility increased with increasing applied cathodic polarization and with decreasing strain rate. HE susceptibility of the rolled steels at relatively high strain rate (10-4 to 10-5 s-1) increased with the hydrogen diffusion coefficient. Similar results were observed in terms of the HE contribution to corrosion fatigue crack growth rate. High-temperature-tempered martensitic steels showed a lower HE susceptibility.