Miracle-dz/UniFAR-FTUs huggingface dataset:
Dialogue between Students and the Instructor: A Missing Link in Assessing E-Learning Outcomes

Interaction is one of the controversial topics in e-learning literature. Overall body of knowledge that has accumulated over the past decade seemed inconclusive and needs critical analyses. To find an answer to the perplexing issue, this study presents a path analysis model to investigate the effects of interaction and dialog on e-learning outcomes and satisfaction. The path analysis model we present here differs from all existing studies in that the path model introduced a new variable, dialog. The concept of dialog is suggested by Moore, but it was not empirically test until now. Based on the review of related research, five hypotheses were developed. The structural equations also show that about forty two percent of e-learning satisfaction levels can be explained by three endogenous variables and one exogenous variable (learning outcomes). The level of student satisfaction in e-learning hinges on the facilitating role of the instructor, the interaction among students, and the dialogue between the instructor and students, in the order of the magnitude of path coefficients.
Racial and Gender Differences in the Returns to 2-Year and 4-Year Degrees

Using data from the 1993 National Longitudinal Survey of Youth, this paper documents differences in the rate of return to 2-year and 4-year degrees across race and gender. We find for each race and gender group that a baccalaureate degree is more valuable than an associate's degree, and the return to an associate's degree is greater than attending some college, which is in turn more valuable than simply finishing high school. Our results indicate that these effects are statistically different for black and white men. Finally, according to our research, one avenue of low-cost education for women and black men is to attend a 2-year school and then finish the degree at a 4-year institution.
3-(3-Chlorobenzoyl)-4-hydroxy-2H-1,2-benzothiazine 1,1-dioxide

In the title compound, C15H10ClNO4S, the heterocyclic thiazine ring adopts a half-chair conformation with the S and N atoms displaced by 0.476 (5) and 0.227 (5) Å, respectively, on opposite sides of the mean plane formed by the remaining ring atoms. The structure is stabilized by intermolecular N—H⋯O and C—H⋯O hydrogen bonds. In addition, intramolecular O—H⋯O and C—H⋯N interactions are also present.
Systematic review of school‐based interventions that focus on changing dietary intake and physical activity levels to prevent childhood obesity: an update to the obesity guidance produced by the National Institute for Health and Clinical Excellence

To determine the effectiveness of school‐based interventions that focus on changing dietary intake and physical activity levels to prevent childhood obesity. MEDLINE and EMBASE were searched (January 2006 to September 2007) for controlled trials of school‐based lifestyle interventions, minimum duration of 12 weeks, reporting weight outcome. Thirty‐eight studies were included; 15 new studies and 23 studies included within the National Institute for Health and Clinical Excellence obesity guidance. One of three diet studies, five of 15 physical activity studies and nine of 20 combined diet and physical activity studies demonstrated significant and positive differences between intervention and control for body mass index. There is insufficient evidence to assess the effectiveness of dietary interventions or diet vs. physical activity interventions. School‐based physical activity interventions may help children maintain a healthy weight but the results are inconsistent and short‐term. Physical activity interventions may be more successful in younger children and in girls. Studies were heterogeneous, making it difficult to generalize about what interventions are effective. The findings are inconsistent, but overall suggest that combined diet and physical activity school‐based interventions may help prevent children becoming overweight in the long term. Physical activity interventions, particularly in girls in primary schools, may help to prevent these children from becoming overweight in the short term.
Disgust Enhances the Recollection of Negative Emotional Images

Memory is typically better for emotional relative to neutral images, an effect generally considered to be mediated by arousal. However, this explanation cannot explain the full pattern of findings in the literature. Two experiments are reported that investigate the differential effects of categorical affective states upon emotional memory and the contributions of stimulus dimensions other than pleasantness and arousal to any memory advantage. In Experiment 1, disgusting images were better remembered than equally unpleasant frightening ones, despite the disgusting images being less arousing. In Experiment 2, regression analyses identified affective impact – a factor shown previously to influence the allocation of visual attention and amygdala response to negative emotional images – as the strongest predictor of remembering. These findings raise significant issues that the arousal account of emotional memory cannot readily address. The term impact refers to an undifferentiated emotional response to a stimulus, without requiring detailed consideration of specific dimensions of image content. We argue that ratings of impact relate to how the self is affected. The present data call for further consideration of the theoretical specifications of the mechanisms that lead to enhanced memory for emotional stimuli and their neural substrates.
14-3-3 Proteins: A Number of Functions for a Numbered Protein

Many signal transduction events are orchestrated by specific interactions of proteins mediated through discrete phosphopeptide-binding motifs. Although several phosphospecific-binding domains are now known, 14-3-3s were the first proteins recognized to specifically bind a discrete phosphoserine or phosphothreonine motif. The 14-3-3 proteins are a family of ubiquitously expressed, exclusively eukaryotic proteins with an astonishingly large number of binding partners. Consequently, 14-3-3s modulate an enormous and diverse group of cellular processes. The effects of 14-3-3 proteins on their targets can be broadly defined using three categories: (i) conformational change; (ii) physical occlusion of sequence-specific or structural protein features; and (iii) scaffolding. This review will describe the current state of knowledge on 14-3-3 proteins, highlighting several important advances, and will attempt to provide a framework by which 14-3-3 functions can be understood. Signal transduction events can be regulated both by posttranslational modifications and by protein-protein interactions. 14-3-3 proteins are critically involved in both of these processes. The 14-3-3s, originally catalogued as small, abundant brain proteins, are expressed as multiple isoforms in all eukaryotic cells and are now known to recognize and to bind to distinct phosphoserine or phosphothreonine motifs on target proteins. Their binding partners include key proteins involved in metabolism, cell cycle control, the DNA damage response, transcription, protein synthesis, and apoptosis. This STKE Review with 2 figures and 127 references describes 14-3-3 proteins and highlights how these simple proteins have profound effects on the regulation of a vast number of cellular events.
Representation of whisker follicle intrinsic musculature in the facial motor nucleus of the rat

Retrograde transport of wheatgerm‐agglutinin horseradish peroxidase (WGA‐HRP) and fluorescent tracers (true blue‐TB, nuclear yellow‐NY, and diamidino yellow‐DY) from isolated whisker follicles was used to define the somatotopic organization of the facial (VII) motoneurons which innervate the intrinsic follicle muscles. Motoneurons supplying these muscles were restricted almost completely to the lateral (Martin and Lodge, 1977) facial subnucleus and the motoneurons which innervated a given follicle were distributed over the entire length of this subnucleus. Cells projecting to dorsal (A‐row) follicles were located in the most lateral part of the lateral subnucleus, while those supplying ventral (E‐row) follicles were restricted to the medial part of the subnucleus. Injections of different tracers into rostral and caudal follicles within a given row revealed no somatotopic representation of the rostrocaudal axis of the whiskerpad. Additional control experiments demonstrated that some of the labelling obtained with WGA‐HRP resulted from spread of this tracer to extrinsic muscles. This was not the case with the fluorescent tracers. The results of the control experiments suggested further that a significant percentage of the motoneurons in the lateral facial subnucleus innervate only intrinsic follicle muscles.
Milk progesterone profiles, blood metabolites, metabolic hormones and pregnancy rates in Awassi ewes treated by gestagen + eCG at the early breeding season

The ovarian response to a standard chronogest + eCG treatment with plasma levels of insulin, insulin-like growth factor-I (IGF-I), thyroids, non-esterified fatty acids (NEFA), βOH-butyrate (BHB) and urea-N (PUN) was studied in lactating Awassi ewes (n = 105) during the late-summer - early autumn transition period. The ewes were inseminated with diluted fresh semen after gestagen removal, and mated thereafter; 26 of them conceived at the fixed-time AI (fix AI; conception rate is calculated from lambing dates). Ovarian function was monitored by milk progesterone (P 4 ) profiles. Before synchronization, the ovary was still acyclic in 33 and already cyclic in 72 ewes. Twenty-nine and 43 of the cyclic animals were in the follicular and luteal phases, respectively. After gestagen removal almost all ( n = 104) ewes ovulated, although at AI elevated P 4 levels related to the pres - ence of partially luteinized follicles, and short-lived CL-s were observed in 10 and five animals (none of them re-conceived at the fixed time AI). Cycling ewes showed higher insulin and IGF-I levels than the acyclic animals, and those who had not conceived had higher PUN than the pregnant ones. The other metabolic parameters did not differ. Neither conception rate, nor the ovarian response was influenced by the pre-treatment.
Study of the characteristics of battery packs in electric vehicles with parallel-connected lithium-ion battery cells

This paper studies the characteristics of battery packs with parallel-connected lithium-ion battery cells. To investigate the influence of cell inconsistency problem in parallel-connected cells, a group of different degraded lithium-ion battery cells were selected to build various battery packs and test them using a battery test bench. The physical model was developed to simulate the operation of the parallel-connected packs. The experimental results and simulation indicate that with different degraded cells in parallel, there could be capacity loss and large difference in discharge current, which may cause further accelerated degradation and more serious inconsistency problem.
Mediterranean Jellyfish Venoms: A Review on Scyphomedusae

The production of natural toxins is an interesting aspect, which characterizes the physiology and the ecology of a number of marine species that use them for defence/offence purposes. Cnidarians are of particular concern from this point of view; their venoms are contained in specialized structures–the nematocysts–which, after mechanical or chemical stimulation, inject the venom in the prey or in the attacker. Cnidarian stinging is a serious health problem for humans in the zones where extremely venomous jellyfish or anemones are common, such as in temperate and tropical oceanic waters and particularly along several Pacific coasts, and severe cases of envenomation, including also lethal cases mainly induced by cubomedusae, were reported. On the contrary, in the Mediterranean region the problem of jellyfish stings is quite modest, even though they can have anyhow an impact on public health and be of importance from the ecological and economic point of view owing to the implications on ecosystems and on some human activities such as tourism, bathing and fishing. This paper reviews the knowledge about the various aspects related to the occurrence and the stinging of the Mediterranean scyphozoan jellyfish as well as the activity of their venoms.
Arthrodesis of the Ankle: A Critical Analysis

Arthrodeses of 81 ankles performed by a single surgeon were reviewed after a 12- to 74-month follow up. Average time to union was 13.8 weeks, and 71 (88%) of 81 ankles healed without a second surgery. Ten (12%) of the 81 ankles failed to unite. Of the 10 nonunions, two developed a dense fibrous union without screw failure, and eight underwent revisional surgery. Seven of the revisions united and one has a persistent nonunion. The transfibular approach was utilized, and specific factors related to this approach were assessed. A greater resection of the medial malleolus correlated to a longer healing time and to an increased rate of nonunion. Sixty (96%) of the 63 patients who returned for follow up had no signs or symptoms attributable to malalignment. The average postoperative score for ankle-hindfoot on the AOFAS evaluation was 74 points, and rate of the patient satisfaction was 65 (89%) of the 73 patients. There was no correlation between outcomes and patients ages. Greater tarsal mobility correlated with a higher postoperative score and to higher level of satisfaction.
Attitudes Toward Using Condoms and Condom Use: Difference Between Sexually Abused and Nonabused African American Female Adolescents

Rates of many sexually transmitted diseases remain higher among adolescents than among any other age group. The associations between abuse experiences and risky sexual behaviors suggest that exploring the relationships between adolescents' abuse history and condom use beliefs and behaviors is warranted. Females (N = 725) attending an adolescent clinic reported demographic characteristics, beliefs about condom use, sexual behaviors, and sexual abuse or molestation history. Those reporting sexual abuse or molestation (23%) were more likely to think condoms interfered with sexual pleasure and less likely to think condoms were important to partners. They also reported more unprotected vaginal sex and more lifetime sex partners. Beliefs were correlated with condom use consistency, number of lifetime partners, and number of unprotected sex experiences. The greater levels of behavioral risk among those reporting abuse suggest greater risk for acquisition and transmission in abused female adolescents. The authors discuss hypotheses to inform future research and intervention.
Sciatic Nerve Conductivity is Impaired by Hamstring Strain Injuries

Abstract The aim of this study was to assess sciatic nerve conductivity in athletes with a history of hamstring strain injuries. Twenty-seven athletes with a history of hamstring strain injuries were included in the injured group. The control group consisted of 16 uninjured participants. We measured the proximal and distal latencies and calculated the sciatic nerve conduction velocity to evaluate neuronal conductivity. The results were expressed as median values and interquartile ranges. Both proximal latency and distal latency of the injured limb in the injured group were significantly longer than those of the uninjured limb (p<0.05). The nerve conduction velocity of the injured limb in the injured group was significantly lower than that of the uninjured limb (p<0.05). There were no significant side-to-side differences in the control group. Sciatic nerve conductivity impairments may exist in athletes with a history of hamstring strain injuries.
Why Virtual, Why Environments? Implementing Virtual Reality Concepts in Computer-Assisted Language Learning

The research area of computer-assisted language learning (CALL) has recently shifted from seeing the computer as a tool or partner to seeing it as a virtual environment where learners can collaborate and interact with a wide variety of native speakers. In addition, CALL has also increasingly benefited from the theoretical framework of learner autonomy, although it has frequently been misunderstood as self-directed learning. In light of these developments, terms such asvirtual andenvironment need to be defined. So far, the large tradition of virtual reality (VR) research and its concepts has largely been neglected in CALL and second language acquisition (SLA) research. However, a critical and reflective analysis ofVRtools and their underlying concepts shows that learner autonomy and VR are in fact an ideal combination for language learning: first, by raising language and linguistic awareness; second, by supporting interaction and collaboration with peers and native speakers; and third, by providing an experimental, learner-centered learning environment. The article concludes with a summary of design principles for CALL software.
Perinatal Mortality in Eastern Uganda: A Community Based Prospective Cohort Study

Background To achieve a child mortality reduction according to millennium development goal 4, it is necessary to considerably reduce neonatal mortality. We report stillbirth and early neonatal mortality risks as well as determinants of perinatal mortality in Eastern Uganda. Methods A community-based prospective cohort study was conducted between 2006 and 2008. A total of 835 pregnant women were followed up for pregnancy outcome and survival of their children until 7 days after delivery. Mother's residence, age, parity, bed net use and whether delivery took place at home were included in multivariable regression analyses to identify risk factors for perinatal death. Results The stillbirth risk was 19 per 1,000 pregnancies and the early neonatal death risk 22 per 1,000 live births. Overall, the perinatal mortality risk was 41 [95%CI: 27, 54] per 1,000 pregnancies. Of the deaths, 47% followed complicated deliveries and 24% preterm births. Perinatal mortality was 63/1,000 pregnancies among teenage mothers, 76/1,000 pregnancies among nulliparous women and 61/1,000 pregnancies among women delivering at home who, after controlling for potential confounders, had a 3.7 (95%CI: 1.8, 7.4) times higher perinatal mortality than women who gave birth in a health facility. This association was considerably stronger among nulliparous women [RR 8.0 (95%CI: 2.9, 21.6)] than among women with a previous live birth [RR 1.8 (95%CI: 0.7, 4.5)]. All perinatal deaths occurred among women who did not sleep under a mosquito net. Women living in urban slums had a higher risk of losing their babies than those in rural areas [RR: 2.7 (95%CI: 1.4, 5.3)]. Conclusion Our findings strengthen arguments for ensuring that pregnant women have access to and use adequate delivery facilities and bed nets.
Target-Dependent Churn Classification in Microblogs

We consider the problem of classifying micro-posts as churny or non-churny with respect to a given brand. Using Twitter data about three brands, we find that standard machine learning techniques clearly outperform keyword based approaches. However, the three machine learning techniques we employed (linear classification, support vector machines, and logistic regression) do not perform as well on churn classification as on other text classification problems. We investigate demographic, content, and context churn indicators in microblogs and examine factors that make this problem more challenging. Experimental results show an average F1 performance of 75% for target-dependent churn classification in microblogs.
Targeted mutagenesis of the phospholipase D gene results in decreased virulence of Corynebacterium pseudotuberculosis

The chromosomal gene encoding the phospholipase D from Corynebacterium pseudotuberculosis (biovar ovis) isolate Whetten 1 was replaced with an allele containing a nonsense mutation. The virulence of the mutant strain (W1.31r1) and the isogenic parental strain were then compared by inoculation of goats. The with‐type strain caused abscessation at the site of infection, which then spread to the regional lymph node, while W1.31r1 had a reduced ability to establish a primary infection and was incapable of dissemination. Our results confirm that phospholipase D is a virulence determinant of C. pseudotuberculosis that increases the persistence and spread of the bacteria within the host.
Factors Influencing Survival of Legionella pneumophila Serotype 1 in Hot Spring Water and Tap Water

ABSTRACT The factors involved in the survival of Legionella pneumophila in the microcosms of both hot spring water and tap water were studied by examining cultivability and metabolic activity. L. pneumophila could survive by maintaining metabolic activity but was noncultivable in all microcosms at 42°C, except for one microcosm with a pH of <2.0. Lower temperatures supported survival without loss of cultivability. The cultivability declined with increasing temperature, although metabolic activity was observed at temperatures of up to 45°C. The optimal range of pH for survival was between 6.0 and 8. The metabolic activity could be maintained for long periods even in microcosms with high concentrations of salt. The cultivability of organisms in the post-exponential phase in a tap water microcosm with a low inoculum size was more rapidly reduced than that of organisms in the exponential phase. In contrast, the loss of cultivability in microcosms of a high inoculum size was significant in the exponential phase. Random(ly) amplified polymorphic DNA analysis of microcosms where cultivability was lost but metabolic activity was retained showed no change compared to cells grown freshly, although an effect on the amplified DNA band pattern by production of stress proteins was expected. Resuscitation by the addition of Acanthamoeba castellanii to the microcosm in which cultivability was completely lost but metabolic activity was maintained was observed only in part of the cell population. Our results suggest that L. pneumophila cell populations can potentially survive as free organisms for long periods by maintaining metabolic activity but temporarily losing cultivability under strict environments and requiring resuscitation by ingestion by amoebas.
Gravity dual of the chiral anomaly

We study effects associated with the chiral anomaly for a cascading $\mathrm{SU}(N+M)\ifmmode\times\else\texttimes\fi{}\mathrm{SU}(N)$ gauge theory using gauge/gravity duality. In the gravity dual the anomaly is a classical feature of the supergravity solution, and the breaking of the $U(1) R$ symmetry down to ${\mathbf{Z}}_{2M}$ proceeds via the Higgs mechanism.