Miracle-dz/UniFAR-FTUs huggingface dataset:
Patrón de uso de internet y control parental de redes sociales como
predictor de sexting en adolescentes: una perspectiva de género

espanolEl presente estudio analiza desde una perspectiva de genero la relacion entre el patron de uso de internet, la medida de control parental aplicada a redes sociales y el sexting en una muestra de adolescentes. Es un estudio descriptivo-relacional de tipo transversal. Participaron 163 adolescentes entre 12 y 16 anos. Los hallazgos muestran que una mayor frecuencia de conexion a internet puede ser un factor de riesgo para sexting y sextorsion, pero unicamente para mujeres. Por su parte, el control parental de redes sociales se relaciona con una menor frecuencia de conexion a internet tanto en hombres como en mujeres. Sin embargo, cuando se combinan control parental de redes sociales con medidas restrictivas de frecuencia de horas de conexion a internet y franja horaria nocturna de conexion, disminuye la probabilidad de exposicion al sexting y la sextorsion, pero unicamente en mujeres. Se senala la necesidad de impulsar estrategias educativas y preventivas a nivel familiar y escolar que fomenten un uso adecuado de internet, y promuevan la autorregulacion de su uso en adolescentes. EnglishThis study analyze from a gender perspective the relationship between the pattern of internet use, the measure of parental monitoring applied to social networks and sexting in a sample of adolescents. It is a cross-sectional descriptive-relational study. There were 163 adolescents between 12 and 16 years old. Findings show that a higher frequency of internet connection can be a risk factor for sexting and sextorsion, but only for female. On the other hand, the parental monitoring of social networks is related to a lower frequency of internet connection in both, men and female. However, when parental control of social networks is combined with restrictive measures of frequency of hours internet connection and night time connection, the probability of exposure to sexting and sextorsion decreases, but only in female. Educational and preventive strategies are needed at the family and schools that encourage an adequate internet use, and promote self-regulation of its use in adolescents.
Discriminant Features and Temporal Structure of Nonmanuals in American Sign Language

To fully define the grammar of American Sign Language (ASL), a linguistic model of its nonmanuals needs to be constructed. While significant progress has been made to understand the features defining ASL manuals, after years of research, much still needs to be done to uncover the discriminant nonmanual components. The major barrier to achieving this goal is the difficulty in correlating facial features and linguistic features, especially since these correlations may be temporally defined. For example, a facial feature (e.g., head moves down) occurring at the end of the movement of another facial feature (e.g., brows moves up), may specify a Hypothetical conditional, but only if this time relationship is maintained. In other instances, the single occurrence of a movement (e.g., brows move up) can be indicative of the same grammatical construction. In the present paper, we introduce a linguistic–computational approach to efficiently carry out this analysis. First, a linguistic model of the face is used to manually annotate a very large set of 2,347 videos of ASL nonmanuals (including tens of thousands of frames). Second, a computational approach is used to determine which features of the linguistic model are more informative of the grammatical rules under study. We used the proposed approach to study five types of sentences – Hypothetical conditionals, Yes/no questions, Wh-questions, Wh-questions postposed, and Assertions – plus their polarities – positive and negative. Our results verify several components of the standard model of ASL nonmanuals and, most importantly, identify several previously unreported features and their temporal relationship. Notably, our results uncovered a complex interaction between head position and mouth shape. These findings define some temporal structures of ASL nonmanuals not previously detected by other approaches.
How psychic distance and opportunity perceptions affect entrepreneurial firm internationalization

Psychic distance, now established as an individual perceptual construct, is so far a partial explanation of internationalization processes of entrepreneurial firms. Opportunity in foreign markets, although considered important, has hitherto been an assumption rather than explored as an explanatory factor in internationalization theories. Through qualitative data from technology entrepreneurs from New Zealand this study considers opportunity, like psychic distance, as an individual perceptual construct and posits that a combination of opportunity and psychic distance perceptions better explains entrepreneurial internationalization action/intention decisions. The explicit combination proposed is “opportunity-distance quotient” and signifies a shift from psychic distance obstacles based explanations to an opportunity-psychic distance interaction based exploration of entrepreneurial internationalization. Limitations of the study and further research are discussed.
Not Just Funny After All: Sarcasm as a Catalyst for Public Engagement With Climate Change

Sarcastic content is prevalent in online social media, although little research has explored its effects. In this study, we examine how exposure to one-sided versus two-sided sarcastic perspectives on climate change shapes beliefs about climate change. We find that exposure to one-sided messages that use irony to deride those who believe that climate change is a hoax (presented in The Onion) raises belief certainty in and perceived risk of climate change for those who do not already believe climate change is an important issue (N = 141). The two-sided message (presented by The Weather Channel) does not show any effects.
Habitat-Forming Bryozoans in New Zealand: Their Known and Predicted Distribution in Relation to Broad-Scale Environmental Variables and Fishing Effort

Frame-building bryozoans occasionally occur in sufficient densities in New Zealand waters to generate habitat for other macrofauna. The environmental conditions necessary for bryozoans to generate such habitat, and the distributions of these species, are poorly known. Bryozoan-generated habitats are vulnerable to bottom fishing, so knowledge of species’ distributions is essential for management purposes. To better understand these distributions, presence records were collated and mapped, and habitat suitability models were generated (Maxent, 1 km2 grid) for the 11 most common habitat-forming bryozoan species: Arachnopusia unicornis , Cellaria immersa , Cellaria tenuirostris , Celleporariaagglutinans , Celleporinagrandis , Cinctipora elegans , Diaperoecia purpurascens , Galeopsis porcellanicus , Hippomenella vellicata , Hornerafoliacea , and Smittoideamaunganuiensis . The models confirmed known areas of habitat, and indicated other areas as potentially suitable. Water depth, vertical water mixing, tidal currents, and water temperature were useful for describing the distribution of the bryozoan species at broad scales. Areas predicted as suitable for multiple species were identified, and these ‘hotspots’ were compared to fishing effort data. This showed a potential conflict between fishing and the conservation of bryozoan-generated habitat. Fishing impacts are known from some sites, but damage to large areas of habitat-forming bryozoans is likely to have occurred throughout the study area. In the present study, spatial error associated with the use of historic records and the coarse native resolution of the environmental variables limited both the resolution at which the models could be interpreted and our understanding of the ecological requirements of the study species. However, these models show species distribution modelling has potential to further our understanding of habitat-forming bryozoan ecology and distribution. Importantly, comparisons between hotspots of suitable habitat and the distribution of bottom fishing in the study area highlight the need for management measures designed to mitigate the impact of seafloor disturbance on bryozoan-generated habitat in New Zealand waters.
The influence of age on the associations between HR practices and both affective commitment and job satisfaction: A meta‐analysis

Research on the association between high commitment Human Resource (HR) practices and work-related outcomes at the individual level rarely focuses on age differences. To fill this knowledge gap, a meta-analysis has been conducted to examine how the relationships between the availability of high commitment HR practices, as perceived by employees, and affective commitment and job satisfaction change with age. Drawing on Selection, Optimization, and Compensation (SOC) theory and on Regulatory Focus theory, we identify a bundle of maintenance HR practices and a bundle of development HR practices, and hypothesize that the association between maintenance HR practices and work-related attitudes strengthens with age, and that the association between development HR practices and work-related attitudes weakens with age. Our meta-analysis of 83 studies reveals that, in line with social exchange and signaling theories, employees' perceptions of HR practices are positively related to their work-related attitudes, and that calendar age influences this relationship largely as expected. These results are discussed in light of the above mentioned theories. Copyright © 2009 John Wiley & Sons, Ltd.
Privacy leakage vs . Protection measures : the growing disconnect

Numerous research papers have listed different vectors of personally identiﬁable information leaking via traditional and mobile Online Social Networks (OSNs) and highlighted the ongoing aggregationof data about users visiting popularWeb sites. We argue that the landscape is worsening and existing proposals (including the recent U.S. Federal Trade Commis-sion’s report) do not address several key issues. We examined over 100 popular non-OSN Web sites across a number of categories where tens of millions of users representing diverse demographics have accounts, to see if these sites leak private information to prominent aggregators. Our results raise considerable concerns: we see leakage in sites for every category we examined; fully 56% of the sites directly leak pieces of private information with this result growing to 75% if we also include leakage of a site userid. Sensitive search strings sent to healthcare Web sites and travel itineraries on ﬂight reservation sites are leaked in 9 of the top 10 sites studied for each category. The community needs a clear understanding of the shortcomings of existing privacy protection measures and the new proposals. The growing disconnect between the protection measures and increasing leakage and linkage suggests that we need to move beyond the losing battle with aggregators and examine what roles ﬁrst-party sites can play in protecting privacy of their users.
SEYFERT GALAXIES: NUCLEAR RADIO STRUCTURE AND UNIFICATION

A radio study of a carefully selected sample of 20 Seyfert galaxies that are matched in orientation-independent parameters, which are measures of intrinsic active galactic nucleus power and host galaxy properties, is presented to test the predictions of the unified scheme hypothesis. Our sample sources have core flux densities greater than 8 mJy at 5 GHz on arcsec scales due to the feasibility requirements. These simultaneous parsec-scale and kiloparsec-scale radio observations reveal (1) that Seyfert 1 and Seyfert 2 galaxies have an equal tendency to show compact radio structures on milliarcsecond scales, (2) the distributions of parsec-scale and kiloparsec-scale radio luminosities are similar for both Seyfert 1 and Seyfert 2 galaxies, (3) there is no evidence for relativistic beaming in Seyfert galaxies, (4) similar distributions of source spectral indices in spite of the fact that Seyferts show nuclear radio flux density variations, and (5) the distributions of the projected linear size for Seyfert 1 and Seyfert 2 galaxies are not significantly different as would be expected in the unified scheme. The latter could be mainly due to a relatively large spread in the intrinsic sizes. We also find that a starburst alone cannot power these radio sources. Finally, an analysis of the kiloparsec-scale radio properties of the CfA Seyfert galaxy sample shows results consistent with the predictions of the unified scheme.
The Effect of Robotics Activities on Learning the Engineering Design Process

This paper describes a study of students’ meaningful learning of the engineering design process during their participation in robotics activities. The population consisted of middleschool students (ages 13–15 years) who participated in the FIRST® LEGO® League competition. The methodology used was qualitative, including observations and interviews. The analysis was based on the Revised Bloom Taxonomy. Almost all the groups demonstrated meaningful learning, although some reached higher levels than others. Most of the groups demonstrated the understanding/applying level during each of the design process phases (searching and decision making, construction and testing, diagnosing and debugging), some demonstrated the analyzing/evaluating level, but only a few demonstrated the higher level of creating. Factors that seemed to play a role in the students’ learning include: (a) the teaching or mentoring style; (b) the absence of a robotics textbook; (c) the extra-curricular competition-oriented nature of the activities; and (d) the unstable nature of the design of the robot.
Two 100-Mpc-scale structures in the three-dimensional distribution of radio galaxies and their implications

We present unequivocal evidence for a huge (80 x 100 x 100 Mpc 3 ) superstructure at redshift z = 0.27 in the three-dimensional distribution of radio galaxies from the Texas-Oxford NVSS Structure 08 h region (TONS08) sample, confirming tentative evidence for such a structure from the 7C redshift survey (7CRS). A second, newly discovered superstructure is also found less securely at redshift 0.35 (of dimensions 100 x 100 x 100 Mpc 3 ). We present full observational details on the TONS08 sample which was constructed to probe structures in the redshift range 0? z? 0.5 by matching NVSS sources with objects in APM catalogues to obtain a sample of optically bright (E R ≤ 19.83), radio-faint (1.4-GHz flux density S 1 . 4 ≥ 3 mJy) radio galaxies in the same 25 deg 2 area as part II of the 7CRS. Out of the total sample size of 84 radio galaxies, at least 25 are associated with the two 100 Mpc-scale superstructures. We use quasi-linear structure formation theory to estimate the number of such structures expected in the TONS08 volume if the canonical value for radio galaxy bias is assumed. Under this assumption, the structures represent 14-5σ peaks in the primordial density field and their expected number is low (∼10 - 2 -10 - 4 ). Because the TONS08 survey was designed to follow up a previously, if tentatively, identified superstructure in the 7CRS, the probability of finding two superstructures in TONS08 is uncertain but, assuming that the tentative detection of the z = 0.35 superstructure is real, must lie between ∼10 - 4 and ∼10 - 5 , depending on how representative the TONS08 region proves to be. We show that similar structures (with similarly low probabilities) are also found in previous radio galaxy redshift surveys, but their significance has not been fully appreciated because they have been traced by very small numbers of radio galaxies. Fortunately, there are several plausible explanations (many of which are testable) for these low probabilities in the form of potential mechanisms for boosting the bias on large scales. These include the association of radio galaxies with highly biased rich clusters in superstructures, enhanced triggering by group-group mergers and enhanced triggering and/or redshift space distortion in collapsing systems as the growth of superstructures moves into the non-linear regime.
Autoantibodies to Annexin XI-A and Other Autoantigens in the Diagnosis of Breast Cancer

We report on the identification of autoantigens commonly recognized by sera from patients with breast cancer. We selected ten sera from patients with invasive ductal carcinoma (IDC) of the breast with high titer IgG autoantibodies for biopanning of a T7 phage breast cancer cDNA display library. A high throughput method involved the assembly of 938 T7 phages encoding potential breast cancer autoantigens. Microarrays of positive phages were probed with sera from 90 patients with breast cancer [15 patients with ductal carcinoma in situ (DCIS) and 75 patients with IDC of the breast], with 51 non-cancer control sera and with sera from 21 patients with systemic autoimmune diseases. A 12-phage breast cancer predictor group was constructed with phage inserts recognized by sera from patients with breast cancer and not by non-cancer or autoimmune control sera (P < 0.0001). Several autoantigens including annexin XI-A, the p80 subunit of the Ku antigen, ribosomal protein S6, and other unknown autoantigens could significantly discriminate between breast cancer and non-cancer control sera. Biopanning with three different sera led to the cloning of partial cDNA sequences identical to annexin XI-A. IgG autoantibodies reacting with the amino acid 41–74 sequence of annexin XI-A were found in 19% of all women with breast cancer but in 60% of sera from women with DCIS of the breast. In addition, partial sequences identical to annexin XI-A, nucleolar protein interacting with the forkhead-associated (FHA) domain of pKi-67, the KIAA1671 gene product, ribosomal protein S6, cyclin K, elongation factor-2, Grb2-associated protein 2, and other unknown proteins could distinguish DCIS from IDC of the breast and appear to be potential biomarkers for the diagnosis of breast cancer.
On the comparison between the LISFLOOD modelled and the ERS/SCAT derived soil moisture estimates

Abstract. In order to evaluate the reliability of the soil moisture product obtained by means of the LISFLOOD hydrological model (De Roo et al., 2000), we compare it to soil moisture estimates derived from ERS scatterometer data (Wagner et al., 1999b). Once evaluated the effect of scale mismatch, we calculate the root mean square error and the correlation between the two soil moisture time series on a pixel basis and we assess the fraction of variance that can be explained by a set of input parameter fields that vary from elevation and soil depth to rainfall statistics and missing or snow covered ERS images. The two datasets show good agreement over large regions, with 90% of the area having a positive correlation coefficient and 66% having a root mean square error minor than 0.5 pF units. Major inconsistencies are located in mountainous regions such as the Alps or Scandinavia where both the methodologies suffer from insufficiently resolved land surface processes at the given spatial resolution, as well as from limited availability of satellite data on the one hand and the uncertainties in meteorological data retrieval on the other hand.
Plasma lipoprotein metabolism in lean and in fat chickens produced by divergent selection for plasma very low density lipoprotein concentration.

Plasma lipoprotein metabolism was studied in vivo in two lines of chickens produced by selection for high and low plasma very low density lipoprotein (VLDL) concentration. Rates of VLDL secretion were measured by determining the rate of accumulation of triglyceride in the plasma after intravenous injection of anti-lipoprotein lipase antibody. The clearance of VLDL-triglyceride and its uptake into liver and adipose tissue was examined using radioactively labeled VLDL synthesized in vivo. The rate of VLDL secretion was about threefold higher in the high-VLDL line as compared to the leaner, low VLDL-line (6.7 vs 2.1 mumol VLDL triglyceride/h per ml of plasma). The clearance of VLDL from the circulation of the low VLDL line was much faster than that of the high VLDL line (t1/2 of 3.7 and 13.6 min, respectively). The proportion of administered radiolabel taken up by the abdominal fat pad was substantially greater in the fat line than in the lean line (11.9 vs 4.8%, respectively). Lipoprotein lipase activities in leg muscle and heart were consistently greater in the low-VLDL line and beta-hydroxybutyrate concentrations in the plasma of the low-VLDL line were significantly greater than those in the high-VLDL line (0.86 vs 0.48 mumol/ml). The results show that the approximately tenfold difference in plasma VLDL concentration between lines is primarily due to markedly different rates of hepatic VLDL production and that selection has made a major effect on partitioning of VLDL triglyceride between adipose and other tissues. (ABSTRACT TRUNCATED AT 250 WORDS)
Endocrinology Metabolism International Journal of Non-contraceptive Benefits of Oral Hormonal Contraceptives

It is becoming evident that oral hormonal contraceptives –besides being well established contraceptives – seem to become important medications for many functional or organic disturbances. So far, clinical effectiveness has been shown for treatment as well as prevention of menstrual bleeding disorders and menstrual-related pain symptoms. Also this is true for premenstrual syndrome (PMS) and premenstrual disphoric disorder (PMDD). Particular oral contraceptives (OCs) containing anti-androgenic progestogens were shown to be effective medications for treatment of androgenisation symptoms (seborrhea, acne, hirsutism, alopecia). Through perfect suppression of the hypothalamic-pituitary-ovarian axis OCs have proven to be effective in elimination of persistent follicular cysts. Endometriosis/adenomyosis related pain symptoms are well handled similar to other drugs like Gonadotropine Releasing Hormone agonists but are less expensive, with less side effects, and possibility to be used for longer periods of time. This is also true for myoma. Pelvic inflammatory disease, rheumatoid arthritis, menstrual migraine, and onset of multiple sclerosis are prevented or delayed. Bone density is preserved and asthma symptoms improved. Endometrial hyperplasia and benign breast disease can be controlled. There is definitely a significant impact on risk reduction regarding endometrial, ovarian, and colon cancers. In conclusion, it needs to be recognized that oral combined hormonal contraceptives (estrogen/ progestogen combination) are – besides being reliable forms of contraception – are cost-effective medications for many medical disorders in women. Therefore, these contraceptives drugs are important for female and global health and should be used in clinical practice. Implication for health policy/practice/research/medical education: Demonstration of the clinical usefulness of various hormonal contraceptives to treat with favourable cost-effectiveness a number of clinical conditions in women. which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
International and regional variation in the prevalence of common mental disorders: do we need more surveys?

Vicente and his colleagues present admirably concise findings from a large epidemiological survey of non-psychotic psychiatric morbidity in four different geographical locations in Chile (Vicente et al, 2004, this issue). Without gainsaying the importance of psychiatric morbidity in that country, many readers, including local decision-makers, may find it difficult to assimilate these results.