Miracle-dz/UniFAR-FTUs huggingface dataset:
Probabilistic Security Analysis of Optimal Transmission Switching

Optimal transmission switching (OTS) optimizes simultaneously the generation dispatch and the topology of a power system. It has been shown that taking some transmission lines out of service can significantly reduce the operating cost of the system while respecting the traditional deterministic N-1 security criterion of operational reliability. However, topology modifications could adversely affect probabilistic security metrics. The operational reliability of a power system can be translated into a cost by multiplying the expected energy not served by the value of lost load. This paper therefore explores whether it is possible to maintain a positive economic balance with OTS when considering not only the cost of generation but also the expected socio-economic cost of disruptions in the supply. This is done in two steps: the computation of an N-1 secure OTS and then the calculation of a probabilistic estimate of the operational reliability of the OTS solution. Based on the results obtained with two test systems, it is shown that OTS tends to significantly degrade probabilistic measures of security. It is thus not obvious that OTS can lead to a positive economic balance, even when N-1 security is enforced. Consequently, a probabilistic security analysis should be performed before implementing an OTS solution.
Adenosine and Opioid Receptors Do Not Trigger the Cardioprotective Effect of Mild Hypothermia

Mild hypothermia (32°C-34°C) exerts a potent cardioprotection in animal models of myocardial infarction. Recently, it has been proposed that this beneficial effect is related to survival signaling. We, therefore, hypothesized that the well-known cardioprotective pathways dependent on adenosine and/or opioid receptors could be the trigger of hypothermia-induced salvage. Open-chest rabbits were accordingly exposed to 30 minutes of coronary artery occlusion (CAO) under normothermic (NT) or hypothermic ([HT] 32°C) conditions. In the latter, hypothermia was induced by total liquid ventilation with temperature-controlled perfluorocarbons in order to effect ultrafast cooling and to accurately control cardiac temperature. After 4 hours of reperfusion, infarct and no-reflow zone sizes were assessed and quantified as a percentage of the risk zone. In animals experiencing HT ischemia, the infarct size was dramatically reduced as compared to NT animals (9% ± 3% vs 55% ± 2% of the risk zone, respectively). Importantly, administration of opioid and adenosine receptor antagonists (naloxone [6 mg/kg iv] and 8-(p-sulfophenyl) theophylline [20 mg/kg iv], respectively) did not alter the infarct size or affect the cardioprotective effect of hypothermia. Doses of these 2 antagonists were appropriately chosen since they blunted infarct size reduction induced by selective opioid or adenosine receptor stimulation with morphine (0.3 mg/kg iv) or N 6-cyclopentyladenosine ([CPA] 100 μg/kg iv), respectively. Therefore, the cardioprotective effect of mild hypothermia is not triggered by either opioid or adenosine receptor activation, suggesting the involvement of other cardioprotective pathways.
Theory of proximity-induced exchange coupling in graphene on hBN/(Co, Ni)

We perform systematic first-principles calculations of the proximity exchange coupling, induced by cobalt (Co) and nickel (Ni) in graphene, via a few (up to three) layers of hexagonal boron nitride (hBN). We find that the induced spin splitting of the graphene bands is of the order of 10 meV for a monolayer of hBN, decreasing in magnitude but alternating in sign by adding each new insulating layer. We find that the proximity exchange can be giant if there is a resonant $d$ level of the transition metal close to the Dirac point. Our calculations suggest that this effect could be present in Co heterostructures, in which a $d$ level strongly hybridizes with the valence-band orbitals of graphene. Since this hybridization is spin dependent, the proximity spin splitting is unusually large, about 10 meV even for two layers of hBN. An external electric field can change the offset of the graphene and transition-metal orbitals and can lead to a reversal of the sign of the exchange parameter. This we predict to happen for the case of two monolayers of hBN, enabling electrical control of proximity spin polarization (but also spin injection) in graphene/hBN/Co structures. Nickel-based heterostructures show weaker proximity effects than cobalt heterostructures. We introduce two phenomenological models to describe the first-principles data. The minimal model comprises the graphene (effective) $p_z$ orbitals and can be used to study transport in graphene with proximity exchange, while the $p_z$-$d$ model also includes hybridization with $d$ orbitals, which is important to capture the giant proximity exchange. Crucial to both models is the pseudospin-dependent exchange coupling, needed to describe the different spin splittings of the valence and conduction bands.
Monsters in the dark and other scary things: preschoolers' self-reports

Objective: This study attempted to obtain normative data regarding the content and frequency of expressed fears of a culturally diverse group of 152 South African preschool children (aged 5–7 years). Method: The study employed four measuring instruments: a biographical questionnaire, the Goodenough-Harris Drawing Test, and individual drawings of feared objects by participants in conjunction with semi-structured interviews. The data analysis included descriptive statistics based on the themes that emerged from the children's drawings and interviews. Results: Fear of animals was the most commonly expressed fear. Other high-frequency fear categories that emerged were fear of the dark, night and bad dreams; fantasy people; real people; and physical harm. For the group as a whole, the results largely support the existing body of literature. Participants expressed between one and nine fears (f = 429; mean = 2.8). Conclusions: This study contributed to a better understanding of both an under-researched psychological phenomenon, fear, and of an under-researched target group of young children. This knowledge is important in order for significant others, such as parents and caregivers, to understand and effectively mediate potentially stressful experiences of young children in their respective capacities.
Derivation of Coupling Factors for Different Wireless Power Transfer Systems: Inter- and Intralaboratory Comparison

In this study, the inter- and intralaboratory comparison of coupling factors is discussed for human exposure to nonuniform magnetic field from different wireless power transfer (WPT) systems. In order to derive the coupling factors, different laboratories computed the internal electric field and specific absorption rate (SAR) for different WPT configurations. The concept of coupling factors was originally introduced in the International Electrotechnical Commission (IEC) 62311 and 62233 standards, for product safety assessment. For WPT systems, extension of the coupling factors is discussed in the IEC working group. This factor enables the estimation of the internal electric field and the SAR without detailed computation using human anatomical models. The coupling factors were computed for different WPT systems, such as an electric vehicle charging at approximately 100 kHz, induction coupling systems (140 kHz band), and home appliances (6.78 MHz). Four in-house codes were used in this inter- and intralaboratory comparison study to compute the coupling factors for the systems. Similar tendencies were observed in the coupling factors obtained by the groups. The difference between the coupling factors of different research groups is 30% when considering the same exposure scenarios. The coupling factors for different WPT systems are different because of the frequency, coil size, and existence of the magnetic sheet (shield). The variability of the internal electric field for WPT systems is also investigated to set the coupling factor required for practical use.
Robust final prediction error criterion for control oriented models validation using L2 − L1 norm

This paper presents a robust final prediction error criterion (RFPE) for Black-box pseudolinear model structure based on the Huber's ρ-norm. In order to deal with large and numerous atypical data named outliers in the prediction error, the tuning constant in the p-norm is extended. Since the large prediction errors strongly disturb the normal distribution, we adopt the gross error model (GEM) as the corrupted distribution model of these errors. We present a robust final prediction error criterion to the Output Error (OE) models validation. Simulation results are given to get the estimated orders from the new criterion.
High-Functional Autism: An Overview of Characteristics and Related Issues.

Individuals with high-functioning autism are characterized by almost normal language ability and intelligence as well as social, pragmatic impairments. Before the 1980s, limited research was focused on this disorder. This paper reviews previous research on this underserved population with a hope that we are able to gain some insights from existing literature and seek directions for future research. The definition and diagnostic criteria for highfunctioning autism are addressed first, and then followed by an overview of the characteristics of these individuals and its relationship with Aspergers syndrome. Finally, research on the social/emotional well being of individuals with this disorder will be introduced as will research on theory of mind and other related research in the fields of neuroscience and cognitive science. Since Kanner first published his groundbreaking study on autism in 1943, countless researchers have focused their research interest on this disorder. According to the Diagnostic and Statistical Manual of Mental Disorder (DSM-IV, 1994), individuals with autism are characterized by impairments in normal social interaction and/or communication, and by repetitive behavior and/or interest. This pervasive developmental disability usually occurs before the age of three and may last for a lifetime. Although research in the past few decades has led to great progress in this field, its causes are still unknown.
Multiple Pollen Sensitization: A Molecular Approach to the Diagnosis

Background: Sensitization to multiple pollen species is a frequent diagnostic event. Several allergenic molecules with a high level of homology have been identified in divergent pollen families and named panallergens. Methods: We sought to define the criteria to evaluate the prevalence of the multiple pollen sensitization, to identify specific markers of this condition, and to correlate them with the underlying allergic disease. Patients presenting an allergic respiratory disease underwent skin testing with 23 pollens. Patients fulfilling predefined selection criteria were grouped and classified as having multiple pollen sensitization. Patients in each subgroup were tested for IgE to rBet v 2, rJun o 2, rBet v 1, rPhl p 5 and bromelain. Demographical, allergological and clinical data were recorded in the subgroup of patients with multiple pollen sensitization. Results: Seventeen percent of the pollen-sensitized patients formed the multiple pollen-sensitized subgroup. These subjects were positive for most of the pollen species tested regardless of known exposure to them. None of the subjects sensitized to less than six pollen species were positive to panallergens, whereas 55% of the sera of the multiple pollen-sensitized group were positive to rBet v 2, and 15% to rJun o 2. IgE to rBet v 1 and rPhl p 5 were found positive in all the subgroups. Age, gender, bronchial asthma, oral allergy syndrome, skin test reactivity and previous specific immunotherapy differed significantly when these two subsets were considered. Conclusions: Allergy diagnosis based on allergenic molecules is crucial in the patient with multiple pollen sensitization. This condition appears to be determined by the sensitization to defined allergenic components (panallergens) rather than by pollen of multiple species as such. Detection of IgE to nonpanallergenic molecules allows to identify more relevant allergenic sources. Clinical aspects of the underlying allergic disease (e.g. asthma and oral allergy syndrome) seem to be differently related to IgE reactivity to panallergens.
Evaluation of Microleakage of Various Restorative Materials: An in Vitro Study

Abstract Microleakage is the clinically detectable passage of bacteria, fluids, molecules or ions between a cavity wall and the restorative materials applied to it. The aim of this study was to evaluate and compare the microleakage of six restorative materials viz., GC Fuji II LC, Ketac Molar Easy Mix, Filtek Z350, Filtek P60, Durafill VS and Dyract Restorative. Sixty caries-free premolars were divided into six groups (n = 10) and standard Class I cavities were restored with six different materials. Observation for marginal leakage was done under Stereomicroscope at 10X and data collected was subjected to statistical analysis. Concluding from the study, the sealing ability in terms of microleakage can be summarized as: Self-cured GIC (Ketac Molar Easy Mix) < Compomer (Dyract) < Packable composite (Filtek P60) < Resin modified Glass ionomer cement (GC Fuji II LC) d” Microfilled composite (Durafill VS) < Nanocomposite (Filtek Z350).
Guidelines for perioperative haemodynamic optimization § Stratégie du remplissage vasculaire périopératoire

B. Vallet *, Y. Blanloeil , B. Cholley , G. Orliaguet , S. Pierre , B. Tavernier a a Pôle d’anesthésie réanimation, hôpital Huriez, CHRU de Lille, rue Polonovski, 59037 Lille cedex, France b Service d’anesthésie-réanimation chirurgicale, hôpital G. -et-R. -Laënnec, CHU de Nantes, 44093 Nantes cedex 1, France c Service d’anesthésie-réanimation, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75908 Paris cedex 15, France d Service d’anesthésie-réanimation, hôpital universitaire Necker–Enfants-Malades, université Paris Descartes, Assistance publique–Hôpitaux de Paris, 149, rue de Sèvres, 75743 Paris cedex 15, France e Institut Claudius-Regaud, 20–24, rue du Pont-Saint-Pierre, 31052 Toulouse Cedex, France
Copper ( II ) Removal using Three Cation Exchange Resins : Ion Exchange Equilibrium and Kinetics

The removal of copper from aqueous solution by Amberjet 1500H, Amberjet 1300H and Amberlite IRC86 ion exchange resins is described. The Amberjet 1500H shows a remarkable increase in sorption capacity for copper compared to other adsorbents. The adsorption process shows maximum removal of copper in pure aqueous solution for an initial copper concentration of 5.98 mmol/L. The metal ions adsorption could be fitted to Langmuir, Freundlich, Temkin and Dubinin–Radushkevich (D-R) isotherms. The adsorption of copper on these cation exchange resins follows pseudo-first-order kinetics, pseudo-second-order kinetics and an Elovich equation. The intraparticle diffusion of copper on ion exchange resins represents the rate-limiting step. The uptake of copper by the first two ion exchange resins, have good potential for the removal/recovery of copper from aqueous solutions. The equilibrium constants were used to calculate thermodynamic parameters, such as the change of free energy, enthalpy and entropy. We conclude that such ion exchange resins can be used for the efficient removal of copper from water and wastewater.
Urate crystal deposition in asymptomatic hyperuricaemia and symptomatic gout: a dual energy CT study

Background The aim of this study was to compare the frequency and volume of dual energy CT (DECT) urate deposits in people with asymptomatic hyperuricaemia and symptomatic gout. Methods We analysed DECT scans of the feet from asymptomatic individuals with serum urate ≥540 µmol/L (n=25) and those with crystal proven gout without clinically apparent tophi (n=33). Results DECT urate deposits were observed in 6/25 (24%) participants with asymptomatic hyperuricaemia, 11/14 (79%) with early gout (predefined as disease duration ≤3 years) and 16/19 (84%) with late gout (p<0.001). DECT urate deposition was observed in both joints and tendons in the asymptomatic hyperuricaemia group, but significantly less frequently than in those with gout (p≤0.001 for both joint and tendon sites). The volume of urate deposition was also significantly lower in those with asymptomatic hyperuricaemia, compared with the early and the late gout groups (p<0.01 for both comparisons). Similar urate volumes were observed in the early and late gout groups. Conclusions Although subclinical urate deposition can occur in people with asymptomatic hyperuricaemia, these deposits occur more frequently and at higher volumes in those with symptomatic gout. These data suggest that a threshold of urate crystal volume may be required before symptomatic disease occurs.
What constitutes a normal seminal analysis? Semen parameters of 243 fertile men.

A cross-sectional study was conducted to determine the semen parameters (i.e. volume, concentration, motility, viability and normal morphology) of proven fertile males in Singapore and compare it with the World Health Organization (WHO) recommended normal values and to examine some factors that may affect spermatogenesis. A total of 243 men, whose wives were pregnant at the time of collection of semen, provided a semen sample each after sexual abstinence for 3 days. A questionnaire was used to elicit occupational exposure, alcoholic consumption, smoking history and past significant medical history. Most subjects had normal sperm volume (56.4%), concentration (79.8%), motility (69.5%) and viability (53.5%) based on WHO criteria. However, fertile men had a low mean percentage of normal sperm morphology (20.0%), although they were normally distributed. Cigarette smoking was associated with significantly lower semen volumes even after adjusting for alcohol consumption. The sperm parameters (i.e. volume, density, motility, viability and normal morphology) were not significantly associated with ethnic differences. The WHO criterion for normal sperm morphology is too stringent, and should be adopted with caution. Normal sperm morphology is but one of many parameters for assessment of fertility. Social alcohol consumption, cigarette smoking, and 'recent fever' did not appear to affect sperm quality in this group of fertile men.
Maine Coon renal screening: ultrasonographical characterisation and preliminary genetic analysis for common genes in cats with renal cysts

The objective of this study was to assess the prevalence of renal cysts and other renal abnormalities in purebred Maine Coon cats, and to characterise these through genetic typing. Voluntary pre-breeding screening programmes for polycystic kidney disease (PKD) are offered for this breed throughout Switzerland, Germany and other northern European countries. We performed a retrospective evaluation of Maine Coon screening for renal disease at one institution over an 8-year period. Renal ultrasonography was performed in 187 healthy Maine Coon cats. Renal changes were observed in 27 of these cats. Renal cysts were found in seven cats, and were mostly single and unilateral (6/7, 85.7%), small (mean 3.6 mm) and located at the corticomedullary junction (4/6, 66.7%). Sonographical changes indicating chronic kidney disease (CKD) were observed in 10/187 (5.3%) cats and changes of unknown significance were documented in 11/187 (5.9%) cats. All six cats genetically tested for PKD1 were negative for the mutation, and gene sequencing of these cats did not demonstrate any common genetic sequences. Cystic renal disease occurs with a low prevalence in Maine Coons and is unrelated to the PKD observed in Persians and related breeds. Ultrasonographical findings compatible with CKD are not uncommon in juvenile Maine Coons.
Some remarks about Descartes’ rule of signs

What can we deduce about the roots of a real polynomial in one variable by simply considering the signs of its coefficients? On one hand, we give a complete answer concerning the positive roots, by proposing a statement of Descartes' rule of signs which strengthens the available ones while remaining as elementary and concise as the original. On the other hand, we provide new kinds of restrictions on the combined numbers of positive and negative roots.
Realization of high tunability barium strontium titanate thin films by rf magnetron sputtering

Ferroelectric thin films are currently being used to develop tunable microwave circuits based on the electric-field dependence of the dielectric constant. (Ba0.5Sr0.5)TiO3 (BST) films prepared by sputtering on Pt/TiO2/SiO2/Si substrates are found to exhibit a capacitance change (tunability) of nearly 4:1. Higher tunability has been attributed to the (100) texturing of the BST films and is a result of the biaxial tensile stress imposed by Si on BST making the polar axis oriented in plane. Electrical characterization shows that the dielectric permittivity increases with increase in film thickness (up to ∼200 nm).
Atomic-Scale Control of Friction by Actuation of Nanometer-Sized Contacts

Stiction and wear are demanding problems in nanoelectromechanical devices, because of their large surface-to-volume ratios and the inapplicability of traditional liquid lubricants. An efficient way to switch friction on and off at the atomic scale is achieved by exciting the mechanical resonances of the sliding system perpendicular to the contact plane. The resulting variations of the interaction energy reduce friction below 10 piconewtons in a finite range of excitation and load, without any noticeable wear. Without actuation, atomic stick-slip motion, which leads to dissipation, is observed in the same range. Even if the normal oscillations require energy to actuate, our technique represents a valuable way to minimize energy dissipation in nanocontacts.
AISeL ) All Sprouts Content Sprouts 1-12-2010 An Extended Adaptive Structuration Theory Framework for Determinants of Virtual Team Success

Virtual team represents an organizational form which can revolutionize the workplace and provide organizations with unprecedented levels of flexibility and responsiveness. Since nineties, virtual teams have been subjected to exhaustive research, mostly focused on the causal relationship between single or multiple constructs and the success variables of virtual teams, such as performance and satisfaction. There have been quite a few reviews on virtual teams which have provided a good overview of the state of virtual team research. These reviews have identified significant constructs in virtual team research, summarized and assessed their findings, proposed frameworks demonstrating the state of present research and posed some challenges and research questions which should be answered by future research on virtual teams. However, existing reviews are too general in terms of portraying relationships, such that their frameworks delineate links among categories of constructs as against among individual constructs themselves. None of the extant reviews identify explicit relationships among the most significant constructs of virtual teams and the research on virtual team performance is still equivocal. An understanding of such explicit relationships between the most significant constructs of virtual teams can get us a deeper insight into how virtual teams achieve effectiveness. Thus, there is a need to structure the current empirical research in order to understand the key direct and indirect drivers of virtual team performance. This study, based on a qualitative review of existing literature on virtual teams, identifies key drivers of virtual team effectiveness and develops a conceptual research framework with 9 propositions linking the identified drivers. It goes beyond the generalized models, such as, AST and Input-Process-Output models and develops a new model EAST (extended adaptive structuration theory) by extending the tenets of AST. This study uses adaptive structuration theory to organize the literature on virtual teams into three broad categories; viz. structural dimensions, social interaction and outcomes, and comes up with hypotheses and research questions linking the above categories.