Miracle-dz/UniFAR-FTUs huggingface dataset:
Recommending educational video games based on game features and student's Learning Styles

Students learn and process information in different ways according to their learning styles. There are many learning styles and teachers are usually unable to deliver learning material that matches every possible combination. In this context, several tools, called Adaptive Hypermedia Systems (AHS), have been developed to automatically adapt and recommend learning material according to the students' learning styles. In recent years, educational video games have been used to motivate and engage students, providing a promising form of instruction. However, these video games possess several features. Thus, a particular educational video game could be preferred by a student with a specific learning style, but not by other student with a different style. For this reason, we analyze which students' behaviors described by Felder's learning styles are related to educational video game features. Moreover, we developed an approach to recommend educational video games whose features match the students' learning styles. Experimental results obtained from a population of undergraduate Computer Science students showed several relations between educational video games features and students' behaviors.
The effect of injections of hypertonic NaCl-solutions into different parts of the hypothalamus of goats.

Summary. In goats intrahypothalamic injections of hypertonic NaCl-solutions, within a region medially in the vicinity of the third ventricle, induced drinking of the animals. The most obvious effect was obtained in experiments, where the injection was performed in the middle hypothalamic region near to the para-ventricular nucleus. Injections of iso- or hypotonic solutions had not this effect. Injections of hypertonic NaCl-solution in the lateral parts of the hypothalamus and in the vicinity of the optic chiasm did not induce any drinking. In seven experiments an obviously increased diuresis together with a diminished concentration of the urine was observed 2–4 hours after the experiments had started. This polyuria was not in every case the consequence of an increased intake of water.
Moulds and Mycotoxin Problems Associated With Corn

Mould and mycotoxin are common concerns regarding forage quality, especially (1) in regions where crops have suffered environmental or disease stress and/or (2) specific silage and high moisture grain storage situations that have compromised fermentation. There have been many excellent reviews of the more than 400 known mycotoxins, including one by L.W. Whitlow and W.M. Hagler Jr. in the 2008 Feedstuffs Reference Issue & Buyers Guide (Whitlow and Hagler, 2007). This paper will focus on the practical, applied aspects of mycotoxin testing, prevention and treatment drawn from recent discussions with some of the leading authorities in the industry.
CAN WE PREDICT THE GLOBAL MAGNETIC TOPOLOGY OF A PRE-MAIN-SEQUENCE STAR FROM ITS POSITION IN THE HERTZSPRUNG–RUSSELL DIAGRAM?

Zeeman–Doppler imaging studies have shown that the magnetic fields of T Tauri stars can be significantly more complex than a simple dipole and can vary markedly between sources. We collect and summarize the magnetic field topology information obtained to date and present Hertzsprung–Russell (H-R) diagrams for the stars in the sample. Intriguingly, the large-scale field topology of a given pre-main-sequence (PMS) star is strongly dependent upon the stellar internal structure, with the strength of the dipole component of its multipolar magnetic field decaying rapidly with the development of a radiative core. Using the observational data as a basis, we argue that the general characteristics of the global magnetic field of a PMS star can be determined from its position in the H-R diagram. Moving from hotter and more luminous to cooler and less luminous stars across the PMS of the H-R diagram, we present evidence for four distinct magnetic topology regimes. Stars with large radiative cores, empirically estimated to be those with a core mass in excess of ∼40% of the stellar mass, host highly complex and dominantly non-axisymmetric magnetic fields, while those with smaller radiative cores host axisymmetric fields with field modes of higher order than the dipole dominant (typically, but not always, the octupole). Fully convective stars above ≳ 0.5 M☉ appear to host dominantly axisymmetric fields with strong (kilo-Gauss) dipole components. Based on similarities between the magnetic properties of PMS stars and main-sequence M-dwarfs with similar internal structures, we speculate that a bistable dynamo process operates for lower mass stars (≲ 0.5 M☉ at an age of a few Myr) and that they will be found to host a variety of magnetic field topologies. If the magnetic topology trends across the H-R diagram are confirmed, they may provide a new method of constraining PMS stellar evolution models.
The prevention of autoimmunity to the thyroid and allergic thyroiditis bantigenic competition.

When bovine gamma globulin (BGG) is mixed with thyroid extract in Freund's complete adjuvant, the BGG competes with the thyroid extract and inhibits the development of allergic thyroiditis as well as the production of antibody and delayed sensitivity to thyroid extract. The amount of BGG required to inhibit the production of thyroiditis, anti-thyroid antibody and delayed sensitivity to thyroid extract depends in part upon the amount of thyroid antigen used to immunize and in part upon the location of the two antigens.
Rho Return--Its Targets in Focal Adhesions

Rho, a small molecular weight guanosine triphosphate binding protein, is a morphogenetic coordinator in yeast and mammalian cells. A paper in this week's issue by Kimura et al. (p. 245) reveals the biochemical details of how Rho activates myosin in stress fibers. In his Perspective, Bussey points out the similarities of the new information to morphogenetic systems in yeast.
Forty-six cases of psychosis in cannabis abusers.

Forty-six habitual users of cannabis, who had been treated for psychosis during the years 1966-1970, were reported following an inquiry sent to Swedish psychiatric clinics and mental hospitals. Twenty-four of these cases had had psychotic episodes generally lasting 1-5 weeks, whereas 22 cases were running a chronic course. In 14 chronic cases an endogenous psychosis seemed to have been present before the drug debut. Seven of these showed a marked aggravation of the psychotic symptoms during periods of cannabis abuse. Eight cases of chronic psychosis occurred in earlier nonpsychotic subjects.Thirty cases occurred in formerly nonpsychotic individuals, though 23 of them had shown psychoneurotic traits. In seven of these, relapse into a second psychotic episode occurred following renewed cannabis abuse. The symptomatology reminded one of schizophrenic or manic-depressive endogenous psychoses in most instances, but confusional states were also seen. Evidence supporting the existence of a cannabis-induced psych.
Effect of Simvastatin on Physiological and Biological Outcomes in Patients Undergoing Esophagectomy.

To the Editor: W ith great interest we read the recently published prospective single-center study by Shyamsundar et al showing the beneficial effect of a perioperative therapy with Simvastatin on the outcome in patients undergoing esophagectomy. We fully agree with the authors that we need a preventive management of acute lung injury after 1-lung ventilation to reduce its high incidence during esophagectomy and the associated high postoperative mortality. However, some issues influencing perioperative inflammation and clinical outcome deserve further clarification. It is necessary to know the UICC stage and tumor location of the treated esophagus carcinomas as well as type and duration of neoadjuvant treatment with its time interval to surgery. There is neither information about the type of
Optimized risk limits for stochastic optimal power flow

Higher shares of electricity generation from renewable energy sources has led to larger fluctuations and increased uncertainty in power systems operation. To enable secure operation, several methods have been proposed that allow the power system operator to plan operation such that the risk of constraint violation is limited to below a predefined acceptable value. Reducing risk not only increases system security, but also the operational cost. Therefore, the risk limit must be chosen carefully to reflect an appropriate trade-off between cost and security. In this paper, we propose a stochastic optimal power flow framework that co-optimizes the risk limits and the generation dispatch, and achieves an optimal balance between risk reduction and cost of operation. We demonstrate the method through an implementation on IEEE test cases.
Blind Multi-user Detection Based on BP Neural Network

Combat multiple access interference(MAI) and near-far effect, to some degree, BP neural network can be better suppression interference, because of its use of the least squares method, prone to local minimum. In this paper, instead of using the MMSE algorithm for least squares and the addition of a new kind of constraints, and gain iterative formula of BP neural network blind multiuser detection algorithm, to achieve the blind multi-user detection, Simulation results indicate: with constraints BP-MMSE algorithm has better convergence properties and lower bit-error ration, to some extent, Certain limits on the effective suppression of multiple access interference, also has an effective capability against near-far effect.
Study of fatigue resistance of chemical and radiation crosslinked medical grade ultrahigh molecular weight polyethylene.

The aim of this work is to understand the role of chemical and radiation induced crosslinking on the fatigue crack propagation resistance of medical grade ultrahigh molecular weight polyethylene (UHMWPE). In recent years, the need to improve the tribological performance of UHMWPE used in total joint replacements has resulted in the widespread utilization of crosslinking as a method to improve wear resistance. Although crosslinking has been shown to drastically improve the wear resistance of the polymer, the potential trade-off in fatigue properties has yet to be addressed. Fatigue crack propagation resistance is a concern in tibial inserts where large cyclic stresses are sufficient to drive the growth of subsurface cracks that potentially contribute to delamination wear mechanisms. For clinical relevance, the combined effects of sterilization and aging are examined in two commercially available crosslinked resins. Nonsterile and unaged resins serve as a control. To evaluate the effect of crosslinking, a comparison is made to uncrosslinked resins. Scanning electron microscopy is used to provide an understanding of fatigue fracture mechanisms in the crosslinked polymers. The results of this study show that the current level of crosslinking used in orthopedic resins for enhanced wear resistance is not beneficial for fatigue crack propagation resistance.
Brassica self-incompatibility

Self-incompatibility (SI) has emerged as an evolutionary strategy to enhance the genetic variability of plant species. In Brassica, it is controlled by a single multiallelic locus, the S-locus, encoding a receptor kinase (SRK) expressed in the stigma papilla cells and its ligand, a small protein (SCR) located in the pollen coat. Pollen rejection is achieved only when the receptor recognizes SCR coming from the same S-allele. If a single papilla cell is simultaneously pollinated by a self- and a cross-pollen grain, it is capable of distinguishing between the two and responding accordingly, rejecting self while accepting cross pollen. This phenomenon reveals that SI response is strictly localized and does not involve the whole papilla cell. It also suggests that the distribution of SRK inside the cell may play an important role in regulating this dual response. We have recently demonstrated that SRK is mostly intracellular, only small amounts being present in distinct domains of the plasma membrane (PM), where interaction with SCR occurs. Following ligand recognition, the receptor-ligand complex is endocytosed and degraded. Based on this, we propose a model of the significance of SRK intracellular trafficking for the functioning and specificity of SI response.
SPITZER MID-IR SPECTRA OF DUST DEBRIS AROUND A AND LATE B TYPE STARS: ASTEROID BELT ANALOGS AND POWER-LAW DUST DISTRIBUTIONS

Using the Spitzer/Infrared Spectrograph (IRS) low-resolution modules covering wavelengths from 5 to 35 μm, we observed 52 main-sequence A and late B type stars previously seen using Spitzer/Multiband Imaging Photometer (MIPS) to have excess infrared emission at 24 μm above that expected from the stellar photosphere. The mid-IR excess is confirmed in all cases but two. While prominent spectral features are not evident in any of the spectra, we observed a striking diversity in the overall shape of the spectral energy distributions. Most of the IRS excess spectra are consistent with single-temperature blackbody emission, suggestive of dust located at a single orbital radius—a narrow ring. Assuming the excess emission originates from a population of large blackbody grains, dust temperatures range from 70 to 324 K, with a median of 190 K corresponding to a distance of 10 AU. Thirteen stars however, have dust emission that follows a power-law distribution, Fν = F0λα, with exponent α ranging from 1.0 to 2.9. The warm dust in these systems must span a greater range of orbital locations—an extended disk. All of the stars have also been observed with Spitzer/MIPS at 70 μm, with 27 of the 50 excess sources detected (signal-to-noise ratio > 3). Most 70 μm fluxes are suggestive of a cooler, Kuiper Belt-like component that may be completely independent of the asteroid belt-like warm emission detected at the IRS wavelengths. Fourteen of 37 sources with blackbody-like fits are detected at 70 μm. The 13 objects with IRS excess emission fit by a power-law disk model, however, are all detected at 70 μm (four above, three on, and six below the extrapolated power law), suggesting that the mid-IR IRS emission and far-IR 70 μm emission may be related for these sources. Overall, the observed blackbody and power-law thermal profiles reveal debris distributed in a wide variety of radial structures that do not appear to be correlated with spectral type or stellar age. An additional 43 fainter A and late B type stars without 70 μm photometry were also observed with Spitzer/IRS; results are summarized in Appendix B.
The Role of Osteoclasts in Early Dissemination of Prostate Cancer Tumor Cells.

Prostate cancer (PCa) is one of the most common neoplasms that metastasize to bone. The aim of this study was to determine if osteoclasts play a role in the seeding of disseminated tumor cells to the bone marrow by mobilizing hematopoietic stem cells (HSCs) out of their marrow niche. Human PC-3Luc cells were introduced into male SCID mice by intracardiac (i.c.) injection after mice were treated with the antiresorptive agent Zoledronic Acid (bisphosphonate (BP)) and/or AMD3100, which mobilizes HSCs out of the marrow. Short term homing of PC-3 was assessed at 24 hours by QPCR for human Alu and luciferase and HSC number was determined by FACS. Mice also received pre and/or post treatments of BP by intraperiteneal (i.p.) injections, in addition to PC-3 luc by intratibial (i.t.) injections. TRAP assays were used to determine the osteoclast (OC) number in both studies. AMD3100 enhanced the release of HSCs from the bone marrow, while BP increased the retention of HSCs. PCa entry into bone was facilitated in AMD3100, BP, and AMD3100+BP treatments. Before PCa injection, the number of TRAP+ OC was increased in mice treated with AMD3100, while treatment with BP resulted in relatively lower TRAP+ OCs. TRAP+ OCs were not detected in the AMD3100 + BP treatment. After PCa injection, however, the number of TRAP+ OCs was dramatically increased, but did not differ significantly amongst the treatment groups. The pre and post BP treatments in the Nude mice decreased the size of PCa lesions in the tibia compared to the control. The results indicate that OC activation is not necessary for PCa metastasis to bone at the earliest stages. These findings are critical in proving that OCs' contribution to metastasis occur during the growth phase of the tumor rather than at the initiation phase.
Inteoperabilização dos Resultados de Aprendizagem: Um estudo de caso

Nowadays, we talk about the information society and knowledge, globalization, innovation, and, more particularly, skills, learning outcomes and the Bologna Process. These areas of knowledge are interconnected and large changes have happened very quickly. The aim of this work consists in the presentation of an identification model and skills’ classification and learning outcomes, based on the official documents of the course units (syllabus and assessment components) of a course of Higher Education. The result of applying this model, available in the Semantic Web, will contribute to interoperability learning outcomes, thus enhancing the mobility of teachers and students in the EHEA (European Higher Education Area) and third countries. Palavras chave Competências, Resultados de Aprendizagem, Interoperabilidade, Bolonha, Programa, Tópicos.
The Study of the Social Cost in Construction Projects Bidding

As the perfect effective means that makes social resource reasonable disposition and reduces social production cost and perfects market trade rule. but high social comes into being in the process of bidding. And mathematical model of social cost of bidding is set up through mathematics method to analysis the Social Cost in Construction Project Bidding and the ways to reduce the Social Cost in Construction Project Bidding.
Rehospitalization for respiratory illness in infants of less than 32 weeks' gestation.

All 133 surviving infants of gestational age less than or equal to 32 weeks born July 1, 1985, to June 30, 1986, as well as a socioeconomically matched full-term control group were observed prospectively for 2 years to determine the incidence of rehospitalization for respiratory illness. Perinatal and seasonal factors associated with increased risk for such hospitalizations were also examined. Forty-seven (36%) preterm infants were rehospitalized compared with 3 (2.5%) of 121 term infants (P less than .001). Preterm infants with and without rehospitalization were similar for mean birth weight (1104 +/- 329 g and 1188 +/- 360 g, respectively) and gestational age (28 +/- 2 weeks for both groups); however, infants who were subsequently rehospitalized had required more days of mechanical ventilation, supplemental oxygen therapy, and neonatal intensive care. While a history of bronchopulmonary dysplasia was a risk factor for rehospitalization (45% compared with 25% of those without bronchopulmonary dysplasia, P less than .05), preterm infants with no history of bronchopulmonary dysplasia still showed a 10-fold increase compared with control infants. Among the 43 infants who required no mechanical ventilation beyond the day of birth, 10 (23%) required rehospitalization. (ABSTRACT TRUNCATED AT 250 WORDS)
Prevention of hip fracture in elderly people with use of a hip protector.

BACKGROUND Hip fractures are common in frail elderly adults worldwide. We investigated the effect of an anatomically designed external hip protector on the risk of these age-related fractures. METHODS We randomly assigned 1801 ambulatory but frail elderly adults (1409 women and 392 men; mean age, 82 years), in a 1:2 ratio, either to a group that wore a hip protector or to a control group. Fractures of the hip and all other fractures were recorded until the end of the first full month after 62 hip fractures had occurred in the control group. The risk of fracture in the two groups was compared, and in the hip-protector group the risk of fracture was also analyzed according to whether the protector had been in use at the time of a fall. RESULTS During follow-up, 13 subjects in the hip-protector group had a hip fracture, as compared with 67 subjects in the control group. The respective rates of hip fracture were 21.3 and 46.0 per 1000 person-years (relative hazard in the hip-protector group, 0.4; 95 percent confidence interval, 0.2 to 0.8; P=0.008). The risk of pelvic fracture was slightly but not significantly lower in the hip-protector group than in the control group (2 subjects and 12 subjects, respectively, had pelvic fracture) (relative hazard, 0.4; 95 percent confidence interval, 0.1 to 1.8; P > or = 0.05). The risk of other fractures was similar in the two groups. In the hip-protector group, four subjects had a hip fracture (among 1034 falls) while wearing the protector, and nine subjects had a hip fracture (among 370 falls) while not wearing the protector (relative hazard, 0.2; 95 percent confidence interval, 0.05 to 0.5; P=0.002). CONCLUSIONS The risk of hip fracture can be reduced in frail elderly adults by the use of an anatomically designed external hip protector.
Cerebral Edema and Brain Swelling

The brain, like many other organ systems, has but a limited number of ways to react, when injured. Perhaps, most common and most dangerous, because of its life-threatening potential, is brain swelling or cerebral edema. These terms may be used interchangeably, since there appears to be no physicochemical basis for distinguishing between the two. Five decades of neuropathologists have argued that the edematous brain is spongy and wet, whereas the swollen brain is firm, sticky, and relatively dry. These are both gross descriptions, but lightand electron-microscopic studies reveal no differences at the cellular level between the two. This is not to say that all edema or swelling have the same characteristics. This is not a completely non-specific reaction; for an increasing numbei of observations from human pathological material and animal experiments indicate that there are distinctly separate forms, most easily defined by their content of protein and their ability to take up vital stains. Moreover, the process may be generalized or focal, depending on the mode of production. One focus of attention in the study of this problem is the area, taken as a unit, of blood vessel, adjacent glial supporting stroma, and neuron. The light-microscope reveals the normal brain to be a tightly packed cellular structure in which capillaries are found closely invested by the adjacent cells. Under the electron-microscope, the capillary is bounded by a basement membrane, to which are juxtaposed clear cell processes (Fig. 1 ) . The nature of the clear cell is in dispute, as some feel these cells are oligodendroglia, while others believe them to be astrocytes (Penfield and Cone, 1926; Luse, 1956; Farquhar and Hartman, 1957; Schultz, Maynard and Pease, 1957; Gerschenfeld, Wald, Zadunaisky and DeRobertis, 1959).