Miracle-dz/UniFAR-FTUs huggingface dataset:
Analysis and system modeling of a smart grid: Case study of the operations domain

The smart grid is a system composed of different subsystems and different objects, hardware and software. In this paper, the smart grid is presented. Then the different domains, the characteristics and benefits and the importance of the operations domain are presented. In fact, a systemic modeling based on the Objectives Oriented Project Planning (OOPP) method is presented to model the smart grid in a general way and the operations domain in a detailed way and finally to analyze its relation with the other domains. The methodology which is realized in this paper describes on the one hand, the optimization of the operations domain and on the other hand, the analysis of three subsystems: the intelligent energy, the intelligent information and the intelligent communication.
Hierarchical flip zooming: enabling parallel exploration of hierarchical visualizations

This paper describes hierarchical Flip Zooming, a focus+context visualization technique for hierarchical information sets. It allows for independent focus+context views at each node of the hierarchy and enables parallel exploration of different branches of the hierarchy. Visualization, navigation and interaction in the Flip Zooming technique is described as well as how the technique fits into existing models of information visualization. Examples of applications using the technique are given.
Students in Higher Education Governance in Europe: Contrasts, commonalities and controversies

This article provides a synthesizing overview of the roles of students in higher education governance in Europe. We first review the existing literature on student involvement in higher education governance in order to locate the contribution of this special issue of Tertiary Education and Management. Second, we summarize the key findings of the five articles on the selected European countries gathered in this issue. In the third part of the article, we outline the main commonalities and contrasts between the countries. Finally, we discuss the controversies surrounding student participation in higher education governance and their grounding in the competing visions of higher education.
PRMT1 Is the Predominant Type I Protein Arginine Methyltransferase in Mammalian Cells*

Type I protein arginine methyltransferases catalyze the formation of asymmetric ω-N G,N G-dimethylarginine residues by transferring methyl groups fromS-adenosyl-l-methionine to guanidino groups of arginine residues in a variety of eucaryotic proteins. The predominant type I enzyme activity is found in mammalian cells as a high molecular weight complex (300–400 kDa). In a previous study, this protein arginine methyltransferase activity was identified as an additional activity of 10-formyltetrahydrofolate dehydrogenase (FDH) protein. However, immunodepletion of FDH activity in RAT1 cells and in murine tissue extracts with antibody to FDH does not diminish type I methyltransferase activity toward the methyl-accepting substrates glutathione S-transferase fibrillarin glycine arginine domain fusion protein or heterogeneous nuclear ribonucleoprotein A1. Similarly, immunodepletion with anti-FDH antibody does not remove the endogenous methylating activity for hypomethylated proteins present in extracts from adenosine dialdehyde-treated RAT1 cells. In contrast, anti-PRMT1 antibody can remove PRMT1 activity from RAT1 extracts, murine tissue extracts, and purified rat liver FDH preparations. Tissue extracts from FDH(+/+), FDH(+/−), and FDH(−/−) mice have similar protein arginine methyltransferase activities but high, intermediate, and undetectable FDH activities, respectively. Recombinant glutathioneS-transferase-PRMT1, but not purified FDH, can be cross-linked to the methyl-donor substrateS-adenosyl-l-methionine. We conclude that PRMT1 contributes the major type I protein arginine methyltransferase enzyme activity present in mammalian cells and tissues.
Keck Spectroscopy of the Gravitational Lens System PG 1115+080: Redshifts of the Lensing Galaxies.

The quadruple system PG 1115+080 is the second gravitational lens with a reported measurement of the Hubble constant. In addition to the primary lens, three nearby galaxies are believed to contribute significantly to the lensing potential. In this paper we report accurate redshifts for all four galaxies and show that they belong to a single group at z_d = 0.311. This group has very similar properties to Hickson's compact groups of galaxies found at lower redshifts. We briefly discuss implications for the existing lens models and derive H_0 = 52 +/- 14 km/s/Mpc.
Helium-oxygen improves Clinical Asthma Scores in children with acute bronchiolitis.

OBJECTIVE To determine the efficacy of a helium-oxygen mixture in children admitted to the pediatric intensive care unit with acute respiratory syncytial virus (RSV) bronchiolitis. DESIGN Randomized, double-blind, controlled, crossover study and nonrandomized, prospective study. SETTING A pediatric intensive care unit in a university hospital. PATIENTS Nonintubated children with signs of acute lower respiratory tract infection and a positive rapid immunoassay for RSV admitted to the pediatric intensive care unit. INTERVENTIONS Treatment with either helium-oxygen or air-oxygen was administered in random order for 20 mins. Nonrandomized patients received helium-oxygen as initial therapy. MEASUREMENTS AND MAIN RESULTS Clinical Asthma Score, respiratory rate, heart rate, and pulse oximetry oxygen saturation values were recorded at baseline (before randomization) and at the end of each 20-min treatment period (helium-oxygen or air-oxygen). Nonrandomized patients were studied 20 mins into helium-oxygen delivery. Eighteen patients were studied, 13 of whom were randomized. Five children with severe bronchiolitis (Clinical Asthma Score of > or =6) were initially given helium-oxygen and scored at 20 mins. Mean Clinical Asthma Score was 3.04 (range 1 to 7.5) in the 13 randomized patients and 4.25 (range 1 to 9) in the 18 patients overall. Clinical Asthma Score decreased in the 13 randomized patients (mean 0.46, p < .05) and in the 18 patients overall (mean 1.23, p < .01) during helium-oxygen delivery. In randomized patients with Clinical Asthma Scores of <6 (n = 12), a positive correlation (rs = .72) was observed between the Clinical Asthma Score at baseline and the change in Clinical Asthma Score during helium-oxygen administration (p = .009). Respiratory rate and heart rate decreased during helium-oxygen treatment but were not statistically significant. No complications occurred during helium-oxygen delivery. CONCLUSIONS Inhaled helium-oxygen improves the overall respiratory status of children with acute RSV lower respiratory tract infection. In patients with mild-to-moderate bronchiolitis (Clinical Asthma Scores of <6), the beneficial effects of helium-oxygen were most pronounced in children with the greatest degree of respiratory compromise.
Compact Models for Transient Analysis of Single-Layer Graphene Nanoribbon Interconnects

Carbon based interconnects have shown immense potential as a candidate to replace traditional copper interconnects for on-chip applications. In that, 2D Graphene Nanoribbon (GNR) interconnects offer superior electrical properties owing to larger mean free paths of electrons and better current carrying capabilities. Single-layer GNR interconnects can be considered as the simplest form of planar carbon-based interconnects for on-chip applications. In this paper, we present closed-form models for computing transfer function of single-layer GNR interconnects. Further, we present the transient analysis of these interconnects, in that we report analytical solutions for 50% delay time, 90% rise time and energy dissipation. The proposed models exhibit excellent accuracy when compared to simulated data while providing physical insights into the effect of quantum capacitance on 50% delay and energy estimation. The proposed models are highly accurate, in that they closely match with data generated from simulations as well as that in the previously published literature.
FluoroDOPA PET shows the nondopaminergic as well as dopaminergic destinations of levodopa

Objective: To evaluate the visible and quantitative anatomic distribution of fluorine-18–labeled l-DOPA in the healthy human brain, to thereby expand the understanding of extrastriatal sites of levodopa function, and to provide a broader foundation for clinical and research studies of fluoroDOPA accumulation in patients. Methods: The authors performed dynamic three-dimensional fluoroDOPA PET imaging in 10 healthy volunteers and analyzed the images visually and quantitatively. Twenty-eight regions of interest were applied to parametric images of the uptake rate constant (using the multiple-time graphic plot method with cortical input function) and also were used to quantitate regional radioactivity at 80 to 90 minutes. The authors correlated the uptake constants with published human regional neurotransmitter and decarboxylation data. Results: PET imaging with fluoroDOPA demonstrates trapping of labeled dopamine or its metabolites in substantial quantities in many areas of the brain other than the mesostriatal pathways, including considerable uptake in the serotonergic and noradrenergic areas of the hypothalamus and brainstem as well as in extrastriatal cerebral sites. Total fluoroDOPA uptake correlates best with the sum of catecholamine and indolamine concentrations in the brain and moderately well with regional activity of aromatic l-amino acid decarboxylase, but correlates poorly with extrastriatal dopamine concentration. Conclusion: Neither l-DOPA nor its radiolabeled analog fluoroDOPA is metabolized or accumulates specifically in dopaminergic or even catecholaminergic neurons. Substantial dopamine production within serotonin and norepinephrine neurons may play a role in either therapeutic effects or adverse effects of therapy with l-DOPA.
CTP-WUR: The collection tree protocol in wake-up radio WSNs for critical applications

Allowing the nodes of a wireless sensor network (WSN) to turn their radio off periodically noticeably increases network lifetime. Duty cycling, however, does not eliminate idle listening, comes at the price of longer latencies and obtains lifetimes that are still insufficient for many critical applications. Using a wake-up receiver (WUR) allows actual communications on the main radio only for transmission or reception, virtually eliminating node idling. However, the range of current WUR prototypes is still significantly shorter than that of the main radio, which can challenge the use of existing WSN protocols in WUR-based networks. In this paper we present an approach to mitigate this limitation of wake-up-based networks. In particular, we show that the Collection Tree Protocol (CTP), a standard protocol for data gathering in WSNs, suitably redefined to work on WUR-endowed nodes, achieves lifetimes of several decades. This constitutes a remarkable improvement over duty cycle-based solutions, where CTP makes the network lasts only a handful of months. At the same time, our WUR-based approach obtains data latencies comparable to those obtained by keeping the main radio always on.
Repeated Intra-Arterial Thrombectomy within 72 Hours in a Patient with a Clear Contraindication for Intravenous Thrombolysis

Introduction. Treating patients with acute ischemic stroke, proximal arterial vessel occlusion, and absolute contraindication for administering intravenous recombinant tissue plasminogen activator (rtPA) poses a therapeutic challenge. Intra-arterial thrombectomy constitutes an alternative treatment option. Materials and Methods. We report a case of a 57-year-old patient with concomitant gastric adenocarcinoma, who received three intra-arterial thrombectomies in 72 hours due to repeated occlusion of the left medial cerebral artery (MCA). Findings. Intra-arterial recanalization of the left medial cerebral artery was performed three times with initially good success. However, two days later, the right medial cerebral artery became occluded. Owing to the overall poor prognosis at that time and knowing the wishes of the patient, we decided not to perform another intra-arterial recanalization procedure. Conclusion. To our knowledge, this is the first case illustrating the use of repeated intra-arterial recanalization in early reocclusion of intracranial vessels.
Vers une globalisation de la gestion des ressources humaines

Le processus de mondialisation se traduit par une tendance a l'homogeneisation du fonctionnement des entreprises. En matiere de GRH, si la globalisation tend a faire converger les pratiques vers un modele unique anglo-saxon, les specificites nationales demeurent toujours marquees dans le meme temps du fait des facteurs historiques, culturels et institutionnels.
RANDOM SERIES OF FUNCTIONS AND APPLICATIONS

In this article we study the continuity properties of trajec- tories for some random series of functions, P 1=0 akf(X k(! )) where (ak)k>0 is a complex sequence, (Xk)k>0 is a sequence of real indepen- dent random variables, f is a real valued function with period one and summable Fourier coecien ts. We obtain almost sure continuity results for these periodic or almost periodic series for a large class of functions f, where the "almost sure" does not depend on the function. The proof relies on gaussian randomization. We show optimality of the results in some cases. Abstract. (Resume) Dans ce travail, nous etudions des propri et es de continuit e de trajectoires de s eries de fonctions al eatoires du type P 1 k=0 akf(X k(! )) o u (ak)k>0 est une suite de nombres complexes, (Xk)k>0 une suite de variables al eatoires r eelles et ind ependantes, f une fonction 1-p eriodique a coecien ts de Fourier sommables. Nous mon- trons que, presque s^t, ces s eries de fonctions al eatoires (p eriodiques ou presque p eriodiques) sont a trajectoires continues pour une grande classe de fonctions f. Le "presque s^ est ind ependant de f. Les preuves s'appuient sur un proc ed e de randomisation gaussien. Dans certains cas, nous montrerons l'optimalit e des r esultats obtenus.
The Rodney L. White Center for Financial Research the Rodney L. White Center for Financial Research Members of the Center Directing Members on the Relationship between the Conditional Mean and Volatility of Stock Returns: a Latent Var Approach *

The Rodney L. White Center for Financial Research is one of the oldest financial research centers in the country. It was founded in 1969 through a grant from Oppenheimer & Company in honor of its late partner, Rodney L. White. The Center receives support from its endowment and from annual contributions from its Members. The Center sponsors a wide range of financial research. It publishes a working paper series and a reprint series. It holds an annual seminar, which for the last several years has focused on household financial decision making. The Members of the Center gain the opportunity to participate in innovative research to break new ground in the field of finance. Through their membership, they also gain access to the Wharton School's faculty and enjoy other special benefits. Abstract We model the conditional mean and volatility of stock returns as a latent vector autoregressive (VAR) process to study the contemporaneous and intertemporal relationship between expected returns and risk in a flexible statistical framework and without relying on exogenous predictors. We find a strong and robust negative correlation between the innovations to the conditional moments that leads to pronounced counter-cyclical variation in the Sharpe ratio. We document significant lead-lag correlations between the conditional moments that also appear related to business cycles. Finally, we show that although the conditional correlation between the mean and volatility is negative, the unconditional correlation is positive due to the lead-lag correlations.
Timing the Information System Upgrade

A system upgrade requires careful planning as its implications to organizational systems might be enormous. Although in IS literature the requirements and process of systems upgrade have been discussed, the timing when to upgrade and what factors guide it has been of lesser interest. Consequently, in this paper we focus on information systems upgrading and its timing from the perspective of the user organization. Upgrading is enabled by the availability of a new software version. When to upgrade, meanwhile, is determined by the business interests of the customer organization, business calendar, development projects, and the vendor. These factors were identified by interviewing 14 IT managers, mainly CIOs, from middle size to large organizations in Finland. They presented 16 different cases of upgrading or modifications of enterprise systems or similar undertakings. The analysis of the cases and the identification of the upgrade timing factors not only increase our understanding of the phenomena in general, but also reveal the customer’s motives and interests regarding IS upgrading and its timing.
The effect of dietary calcium source, concentration and particle size on calcium retention, eggshell quality and overall calcium requirement in laying hens

1. Four different sources of calcium in isonitrogenous and isoenergeric diets were fed to laying hens for 2 weeks when they were 56 and 57 weeks old. The calcium source blends were as follows: 29% fine limestone (LF) + 71% large limestone (LG), 32% LF + 68% eggshell, 32% LF + 68% oyster shell, 50% LF + 50% LG. The contents of these blends of calcium in the diets were as follows: 103·3, 93·3, 93·3 and 93·3 g/kg, respectively. 2. The coefficients of calcium retention were significantly higher in 50:50 LF:LG (0·578) and 32:68 LF:eggshell (0·576). The midnight feeding significantly improved the coefficient of calcium retention in all mixtures except 50:50 LF:LG. 3. In the mixtures 29:71 LF:LG and 32:68 LF:oyster shell, there were significantly greater eggshell quality, eggshell weight, eggshell thickness and eggshell strength. Midnight feeding had no significant effect on eggshell quality. 4. In the ration with oyster shells, 96·5% of the retained calcium was deposited in the eggshell, but in rations 32:68 LF:eggshell and 50:50 LF:LG the utilisation was only 73·9 and 78·6%, respectively. 5. To ensure good quality eggshells in the last third of production, the recommendation for calcium is 4·1 g/kg (900 g/kg dry matter, feed intake 110 g/d). As a source of calcium in this stage of production, a feed mixture containing two-thirds large particles should be used (limestone grit or oyster shell).
Maternal body image dissatisfaction and BMI change in school-age children

Abstract Objective Parental body image dissatisfaction (BID) is associated with children’s weight in cross-sectional studies; however, it is unknown whether BID predicts development of adiposity. The objective of the present study was to investigate the associations between maternal dissatisfaction with her or her child’s body and children’s BMI trajectories. Design Longitudinal study. Maternal dissatisfaction (BID) with her and her child’s body was calculated based on ratings of Stunkard scales obtained at recruitment, as current minus desired body image. Children’s height and weight were measured at baseline and annually for a median of 2·5 years. Mixed-effects models with restricted cubic splines were used to construct sex- and weight-specific BMI-for-age curves according to maternal BID levels. Setting Public primary schools in Bogotá, Colombia. Subjects Children (n 1523) aged 5–12 years and their mothers. Results After multivariable adjustment, heavy boys and thin girls whose mothers desired a thinner child gained an estimated 1·7 kg/m2 more BMI (P=0·04) and 2·4 kg/m2 less BMI (P=0·004), respectively, between the age 6 and 14 years, than children of mothers without BID. Normal-weight boys whose mothers desired a thinner child’s body gained an estimated 1·8 kg/m2 less BMI than normal-weight boys of mothers without BID (P=0·02). Maternal BID with herself was positively related to children’s BMI gain during follow-up. Conclusions Maternal BID is associated with child’s BMI trajectories in a sex- and weight-specific manner.
The Contribution of a Cognitive Bias Against Disconfirmatory Evidence (BADE) to Delusions in Schizophrenia

A neuropsychological paradigm is introduced that provides a measure of a bias against disconfirmatory evidence (BADE), and its correspondence with delusions in people with schizophrenia and schizoaffective disorder was investigated. Fifty-two patients diagnosed with schizophrenia or schizoaffective disorder (36 were acutely delusional) and 24 healthy control participants were presented with delusion-neutral pictures in each trial, and were asked to rate the plausibility of four written interpretations of the scenario depicted by that picture. Subsequently, new pictures that provided background information about the depicted scenario were successively presented, and participants were requested to adjust their ratings, taking into account this new information. Two of the interpretations appeared tenable initially but ultimately proved to be implausible, one appeared untenable initially but eventually proved to be plausible, and one appeared untenable at all stages. A BADE was observed for delusional compared to non-delusional patients, as well as for all patients compared to controls. In addition, regardless of symptom profile, patients were more accepting of implausible interpretations than controls. The present work suggests that deficits in reasoning may contribute to the maintenance of delusions via an impairment in the processing of disconfirmatory evidence. The authors thank Jessica Bristowe, Jannine Laseleta, and Tonya Kragelj for assistance with data collection and data management, and Drs. Karin Christensen, Mahesh Menon, Elton Ngan, Eric Strachan, and Ivan Torres for comments and discussions that shaped this work. This research was supported by post-doctoral fellowships from the Mind Foundation of BC, the Canadian Psychiatric Research Foundation, and the Canadian Institutes of Health Research to TSW, scholarships from the German Academic Exchange Program (DAAD) to SM, and a grant from the Riverview Hospital Academic Steering Committee to TSW.
A Game Theoretic Power Allocation and Relay Load Balancing in OFDMA-Based DF Cellular Relay Networks

In this paper, a game theoretic power allocation and relay load balancing scheme for downlink transmission in an OFDMA-based cellular relay network is proposed. In the cell, a BS is located at cell center communicating with multiple users assisted by multiple relays. The relays adopt the decode-and-forward protocol and can cooperatively assist the transmission from BS to users. In order to assign the users to relays, achieve the load balancing among relays and distribute the power of relays among users while considering the total data rate of the network, a game theoretic scheme is introduced to solve the problem. Simulation results indicate that, the proposed game-based power allocation scheme can improve the average sum- spectral efficiency approximately 20% compared to the traditional scheme.
Iterative Generation of 3-D Models from a Set of Images

This paper describes how the generation of 3-D models may be achieved from a small number of images. It uses an automatic segmentation and a two stage iterative camera calibration and volumetric intersection algorithm to produce a set of 3D points in the form of a cloud of voxels. From this a polygonal or Bspline based surface representation of an object can be generated. The B-spline surface representation can be used to implicitly smooth the modelled surface and also assists texture extraction and portability. The technique, which has been developed on a standard work station, is both fast and robust and requires no specialised equipment.