Miracle-dz/UniFAR-FTUs huggingface dataset:
Aspects cinétiques et acoustiques en simulation numérique des grandes échelles, et application à l'étude du contrôle de l'écoulement de jeu en turbomachines

Les ecoulements en turbomachines (et notamment en turboreacteurs) sont caracterises par de larges structures tourbillonnaires et de fortes intensites turbulentes. Ainsi, l’ecoulement secondaire dans la region du jeu, en tete d’aube, est l’origine de pertes d’energie, d’instabilites et de nuisances sonores. Une simulation fine de ces ecoulements peut etre obtenue par l’emploi de methodes LES (Large-Eddy Simulation), qui permettent de capturer les fluctuations turbulentes majeures. Compte tenu des phenomenes rencontres, le modele de sous-maille SISM (shear-improved Smagorinsky model) est retenu ici. Ce modele est local dans son ecriture, et prend en compte l’influence du cisaillement moyen. Nous proposons ici deux methodes de filtrage (locales en espace elles aussi) pour obtenir une evaluation du champ moyen requis par le modele. Ces methodes sont, dans un premier temps, testees sur une configuration de canal plan. L’ecoulement en regime sous-critique autour d’un barreau cylindrique (Re = 4, 7 ×104) est propose comme cas-test academique selectif pour ces methodes : cet ecoulement presente de larges structures tourbillonnaires ainsi qu’une turbulence intense, tout comme l’ecoulement de jeu. Les simulations permettent l’obtention de resultats tres proches des donnees experimentales. Une etude comparee des deux algorithmes d’extraction du champ moyen montre que l’adaptativite du filtrage de Kalman offre toutefois des resultats legerement meilleurs. Enfin, l’analyse d’un ecoulement de jeu par une methode zonale est realisee (approche LES en tete d’aube, RANS en pied). La simulation de reference obtient des resultats remarquables dans la zone de tete d’aube, en retrouvant notamment les spectres de vitesse experimentaux. Une seconde simulation avec l’emploi d’un dispositif de controle par aspiration au niveau du carter montre deux consequences principales a ce dispositif: une reduction des niveaux de turbulence aux environs de la tete d’aube, et une modification de la trajectoire du tourbillon de jeu. Celui-ci rencontre l’aube suivante dans la configuration de reference, ce qui n’est plus le cas dans la configuration avec controle. Ces deux observations ont une importance certaine dans la reduction des sources acoustiques.
Reduction of Noise in Strapped Magnetron by Electric Priming using Anode Shape Modification

Noise reduction in a 2.45 GHz strapped magnetron oscillator is experimentally demonstrated by electric priming using anode shape modification. The sideband noise are reduced by about 15 dB at the nominal operating current and 28 dB at the start-oscillation current due to electron prebunching into the pi-mode resulted from the modulation of the drift velocity of the electron using the azimuthally periodic electric field. In this experiment, a 4.3kV and 330mA half-wave rectified input power is employed
Statistiques des diffusions ergodiques avec applications en finance

Dans cette these, nous etudions certaines methodes d'estimation parametrique et des tests d'adequation pour des processus de diffusion ergodiques unidimensionnels. Notamment, nous developpons la theorie asymptotique d'un estimateur de la distance minimale de type cramer-von mises, et nous nous interessons aussi a un test d'adequation de modele de type kolmogorov-smirnov: premierement dans le cas ou le modele est completement specifie, puis lorsque des parametres du modele sont estimes. Nous appliquons nos methodes a l'identification et a la validation de certains modeles de taux d'interet utilises sur le marche financier, et nous comparons les resultats avec ceux que fournissent les methodes classiques de la statistique des diffusions
Pharmacological antagonism of the actions of group II and III mGluR agonists in the lateral perforant path of rat hippocampal slices

1 An understanding of the physiological and pathological roles of metabotropic glutamate receptors (mGluRs) is currently hampered by the lack of selective antagonists. Standard extracellular recording techniques were used to investigate the activity of recently reported mGluR antagonists on agonist‐induced depressions of synaptic transmission in the lateral perforant path of hippocampal slices obtained from 12–16 day‐old rats. 2 The group III specific mGluR agonist, (S)‐2‐amino‐4‐phosphonobutanoate (L‐AP4) depressed basal synaptic transmission in a reversible and dose‐dependent manner. The mean (±s.e.mean) depression obtained with 100 μm L‐AP4 (the maximum concentration tested) was 74 ± 3% and the IC50 value was 3 ± 1 μm (n = 5). 3 The selective group II mGluR agonists, (1S,3S)‐1‐aminocyclopentane‐1,3‐dicarboxylate ((1S,3S)‐ACPD) and (2S,1′R,2′R,3′R)‐2‐(2′,3′‐dicarboxycyclopropyl)glycine (DCG‐IV) also depressed basal synaptic transmission in a reversible and dose‐dependent manner. The mean depression obtained with 200 μm (1S,3S)‐ACPD was 83 ± 8% and the IC50 value was 12 ± 3 μm (n = 5). The mean depression obtained with 1 μm DCG‐IV was 73 ± 7% and the IC50 value was 88 ± 15 nM (n = 4). 4 Synaptic depressions induced by the actions of 20 μm (1S,3S)‐ACPD and 10 μm L‐AP4 were antagonized by the mGluR antagonists, (+)‐α‐methyl‐4‐carboxyphenylglycine ((+)‐MCPG), (S)‐2‐methyl‐2‐amino‐4‐phosphonobutanoate (MAP4), (2S, 1′S,2′S)‐2‐methyl‐2‐(2′‐carboxycyclopropyl)glycine (MCCG), (RS)‐α‐methyl‐4‐tetrazolylphenylglycine (MTPG), (RS)‐α‐methyl‐4‐sulphonophenylglycine (MSPG) and (RS)‐α‐methyl‐4‐phosphonophenylglycine (MPPG) (all tested at 500 μm). 5 (+)‐MCPG was a weak antagonist of both L‐AP4 and (1S,3S)‐ACPD‐induced depressions. MCCG was selective towards (1S,3S)‐ACPD, but analysis of its effects were complicated by apparent partial agonist activity. MAP4 showed good selectivity for L‐AP4‐induced effects. 6 The most effective antagonist tested against 10 μm L‐AP4 was MPPG (mean reversal 90 ± 3%; n = 4). In contrast, the most effective antagonist tested against 20 μm (1S,3S)‐ACPD induced depressions was MTPG (mean reversal 64 ± 4%; n = 4). Both antagonists produced parallel shifts in agonist dose‐response curves. Schild analysis yielded estimated KD values of 11.7 μm and 27.5 μm, respectively. Neither antagonist had any effect on basal transmission or on depressions induced by the adenosine receptor agonist, 2‐chloroadenosine (500 nM; n = 3). 7 We conclude that both group II and group III mGluRs can mediate synaptic depressions induced by mGluR agonists in the lateral perforant path. The mGluR antagonists MTPG, MPPG and MAP4 should be useful in determining the roles of group II and III mGluRs in the central nervous system.
Physician Recruitment into Geriatrics—Further Insight into the Black Box

Charles Ketering is quoted as having said, ‘‘We should all be concerned about the future because we will have to live the rest of our lives there. ’’ As professionals and academic leaders in health, we know that, by 2030, the United States will consist of 70 million persons aged 65 and older. For the past 25 years, health professionals and academic leaders have been confronted with a singular problem: how to recruit superior trainees into the field of geriatrics and provide them with adequate training and career satisfaction that results in high-quality patient care at a sustainable cost. However, the problem appears intractable, with demand consistently exceeding supply. The paper by Weeks et al., one of a series of contributions by the Dartmouth group in the past 10 years, contributes important new data that we hope policy-makers will not ignore. The most recent documentation of the state of the field by the Association of Directors of Geriatric Academic Programs (ADGAP) and its commitment to maintaining an ongoing data base is a major and important contribution to the field. The ADGAP report and its related publications document that, in the last decade, there has been a slow increase in the number of fellowship programs, with the addition of 27 new allopathic geriatric medicine programs, bringing the total to 119; in addition, seven new osteopathic programs have been initiated. The number of fellows entering programs has also increased slowly and in 2001–02, a total of 345 fellows were in the system for all years of training. Forty-six percent of programs offered only 1 year of training experience, and a survey of program directors reported that application rates for positions were stable. Further data from the American Medical Association/Association of American Medical Colleges National Graduate Medical Education census showed a fill rate for the first-year fellows of 69% (259/373); just over half of the programs had two or fewer first-year fellows, and 36% reported having no U.S. medical school graduates as first-year fellows. There were 61 post-first-year fellows in the 51 programs offering second-year training opportunities. Thus, the recruitment of high-quality U.S. medical school graduates into the field of geriatric medicine persists as a serious problem and continues to challenge the field of geriatrics. In addition, the number of fellows completing the first year seeking 1 to 3 or more years of training is disastrously low; it is from this pool that future faculty leadership will emerge. The natural history of recruitment into a new field within medicine has been one of a hesitant beginning usually followed by flourishing training programs over a 2decade period. A number of factors enhancing or impeding this transition has been identified in the field of geriatrics, and a review of them and the subsequent outcomes seem appropriate.
Short range ordering in the modified honeycomb lattice compound SrHo2O4

The low temperature behaviour of single crystalline SrHo2O4 has been characterized by dc magnetic susceptibility, heat capacity, and neutron scattering experiments. Our results show that despite the lack of magnetic long-ranged ordering in the presence of strong antiferromagnetic correlations, SrHo2O4 does not order down to 1.8 K. Elastic neutron scattering experiments show prominent magnetic diffuse scattering correlated with a broad feature in the dc susceptibility at T = 4 K, indicative of magnetic short-ranged ordering of the Ho3 spins. Inelastic neutron scattering shows the presence of five crystal field levels up to 80 K in energy, in agreement with the integration of the magnetic specific heat component yielding Rln5 entropy release. The magnetic short-ranged ordering is fitted to a nearest neighbour interaction model with good agreement.
Relative influence maximization in competitive dynamics on complex networks

We consider a model of competition on complex networks in which two competitors have fixed and opposite states, and other agents, called normal agents, adjust their states according to a distributed consensus protocol. Suppose that one of the competitors could add a given number of new links to enhance his influence which can be defined as the total supporting degree of the normal agents or the number of supporters. We investigate the problem of how to add these links so as to maximize the influence of the competitor over the other one (called relative influence). Under different definitions of influence, two relative influence maximization problems, named Problem 1 and Problem 2, are proposed. We show that the objective function of Problem 1 is monotonous and sub-modular. Hence, there exists a polynomial-time greedy algorithm approximately solving Problem 1. For Problem 2, we prove that it is NP-hard. The Alternative Direction Method of Multipliers (ADMM for short) algorithm and several heuristic algorithms are introduced to provide approximate solutions for these two problems.
Study on the evaluation of rural logistics service providers' performance based on DEA model

One of the key factors to enhance the level of Chinese rural logistics is to evaluate and improve the operational efficiency of rural logistics service providers' performance. By using the data envelopment analysis (DEA) method, the paper takes thirty Chinese rural logistics service providers out-output situations in 2011 as sample to process empirical study, which evaluates their own competitiveness and relative logistics performance objectively. The analysis shows that the main source of improving the efficiency of most rural logistics service providers relying on technology progress. Lastly, it puts forward the corresponding policy recommendations from the policy, capital, information and resources etc. basing on the government and industry perspective.
Immunostimulatory DNA: Sequence‐dependent production of potentially harmful or useful cytokines

Certain bacterial immunostimulatory (i.s.) DNA sequences containing unmethylated CpG motifs stimulate antigen‐presenting cells (APC) to express a full complement of costimulatory molecules and to produce cytokines including interleukin (IL)‐12 and tumor necrosis factor (TNF)‐α. While IL‐12 is key to their T helper cell (Th)1‐promoting adjuvant activity, secretion of toxic levels of TNF‐α is harmful in that it promotes toxic shock. Given the beneficial as well as harmful consequences of i.s. DNA, we investigated the possibility of identifying DNA sequences, i.e. CpG oligodeoxynucleotides (ODN) which differentially activate IL‐12 versus TNF‐α cytokine production in APC. Here, we describe an i.s. DNA sequence with these characteristics. While its potential to induce IL‐12 is preserved, its ability to trigger TNF‐α release is strongly curtailed both in vitro and in vivo. I.s. DNA could be segregated into lethal and non‐lethal in a mouse toxic shock model. The non‐toxic i.s. DNA was useful as an adjuvant, thus allowing cytotoxic T cell responses to the soluble protein ovalbumin and conferring a resistant Th 1 phenotype to BALB/c mice lethally infected with Leishmania major. This i.s. CpG motif may thus be prototypic for a useful immunostimulating DNA sequence that lacks harmful side effects.
Trimethoprim resistance in multiple genera of Enterobacteriaceae at a U.S. hospital: spread of the type II dihydrofolate reductase gene by a single plasmid.

The percentage of clinical isolates of several species of Enterobacteriaceae, particularly Escherichia coli and Klebsiella pneumoniae, resistant to trimethoprim (TMPR) has increased gradually at the Brigham and Women's Hospital (Boston) in recent years. Thirty-seven of 42 TMPR isolates from six species of gram-negative bacilli conjugally transferred TMP resistance to K12 E. coli. beta-Lactam resistance cotransferred from 21 of the 37 donors, and sulfamethoxazole (SMZ) resistance cotransferred from five of the 37 donors. Plasmids that encoded TMP resistance either alone or with SMZ resistance had a molecular size of approximately 52.5 kilobases, with identical restriction endonuclease-generated "fingerprints. " Plasmids encoding beta-lactam-mediated resistance (beta R) were approximately four kilobases larger and had fragment patterns that were identical for all of the TMPR/beta R plasmids tested and had many restriction endonuclease-generated bands in common with TMPR plasmids. Radiolabeled dihydrofolate reductase (DHFR) probes identified the type II DHFR as the determinant of TMP resistance. In contrast with reports from Europe, TMP resistance in multiple species of Enterobacteriaceae was found to be spread in one hospital by a single, stable conjugative plasmid that has a wide host range and encodes the type II DHFR gene.
FOLFOX-4 in pre-treated patients with advanced transitional cell carcinoma of the bladder.

BACKGROUND Despite recent progress in the treatment of advanced urothelial cancer, there continues to be a need to identify new active agents and their toxicity spectra. We conducted a study using FOLFOX-4 (oxaliplatin, fluorouracil, folinic acid) in pre-treated advanced bladder cancer patients. METHODS Sixteen eligible patients with advanced disease were treated with oxaliplatin (85 mg/m(3)) on day 1 followed by fluorouracil and folinic acid (De Gramont schedule) on days 1 and 2 every 14 days until disease progression. All patients received nutritional support to increase their caloric intake. Objective responses and toxicity were evaluated. Biochemical responses (reduction of markers) and nutritional parameters (increase in body weight and albumin, and reduction in ferritin and C-reactive protein) were also considered. RESULTS Three patients obtained an objective response (overall response rate 19%). Hematological toxicity and stomatitis were the most commonly noted side effects, but we observed only low (3-4) grade toxicity. In four patients (25%), we observed a reduction in tumoral markers (carcinoembryonic antigen and tissutal polypeptide antigen) and modified nutritional parameters. CONCLUSIONS Using these doses and schedules of FOLFOX-4 appears to be a promising therapy in patients pre-treated with platinum compounds. More studies are required to assess the possible role of this regimen in the treatment of advanced bladder cancer.
An observer model evaluation of simultaneous reconstruction and motion estimation for emission tomography

This paper describes an evaluation of a simultaneous reconstruction and motion estimation algorithm for gated myocardial emission tomography using a multi-image, channelized Hotelling observer model. The test data for the evaluation were obtained using the NURBS-based cardiac torso (NCAT) 4D phantom with simulated myocardial defect. Results indicate that the simultaneous algorithm produces images with significantly improved myocardial defect detectability, relative to the best of an alternative reconstruction method.
Effect of Lamination Stack Ends and Radial Cooling Channels on No-Load Voltage and Inductances of Permanent-Magnet Synchronous Machines

The effect of lamination stack ends and radial cooling channels on the effective stator stack length, no-load voltage, and synchronous inductances of a permanent-magnet synchronous machine are studied using three-dimensional finite element analysis. The stack ends and the radial cooling channels decrease the equivalent electrical length of the machine, thus leading to the fact that a two-dimensional (2-D) approach overestimates the no-load voltage. The effect of stack ends and radial cooling channels on the electrical length of the machine can be compensated by making the rotor stack and permanent magnets longer than the corresponding stator stack. It is shown that in case of no radial cooling channels, synchronous inductances are typically overestimated with the 2-D approach. However, in the case of stator structure having several radial cooling channels, inductances are underestimated using the 2-D approach.
Production and perception of vietnamese short vowels in V1V2 context

The paper analyses the Vietnamese vowel-semivowel productions, including classical and shorter vowels in terms of the vowel duration in relation with the final semivowel duration, the formant transition duration, and the formant transition slopes. The results show that in the vowel-semivowel context, there is a relationship between the vowel duration and the final semivowel duration. Moreover, in the same context of a final semivowel, the classical and shorter vowels can be differentiated by at least one of the formant transition slopes. This allows estimating the role of the final part in its articulation with the shorter vowels in Vietnamese.
PENGARUH KETEPATAN WAKTU PELAPORAN LAPORAN KEUANGAN, OPINI AUDIT, PERGANTIAN KANTOR AKUNTAN PUBLIK, PERUBAHAN REPUTASI KANTOR AKUNTAN PUBLIK, DAN INFORMASI LABA TERHADAP REAKSI INVESTOR

Abstract This research purposed to search empirical evidence danmenganalisis that this study has the effect of timeliness of financial statement reporting the reaction of investors to seek empirical evidence and analysis that this study has the effect of audit opinion, the reaction of investors to seek empirical evidence and analysis that this study has the effect of change of accounting firms publikterhadap investor reaction, to search for and analyze empirical evidence that this study has the effect of changes in accounting firm reputation publikterhadap investor reaction, to search for and analyze empirical evidence that this study has the effect of earnings information to the investor reaction.Samples were companies listed in Indonesia Stock Exchange during the years 2008-2012, obtained by purposive. The data analysis technique is a multiple linear regression analysis. Timeliness of research results is a significant effect on investor reactions, opinions no significant effect on investor reaction, switching significantly influence investors' reaction, change the reputation of KAP no significant effect on investor reaction, the EU does not significantly influence investor reaction. Abstrak Penelitian ini bertujuan untuk mencari bukti empiris danmenganalisis bahwa penelitian ini memiliki pengaruh ketepatan waktu pelaporan laporan keuangan terhadap reaksi investor, untuk mencari bukti empiris dan menganalisis bahwa penelitian ini memiliki pengaruh opini audit terhadap reaksi investor, untuk mencari bukti empiris dan menganalisis bahwa penelitian ini memiliki pengaruh pergantian kantor akuntan publikterhadap reaksi investor, untuk mencari bukti empiris dan menganalisis bahwa penelitian ini memiliki pengaruh perubahan reputasi kantor akuntan publikterhadap reaksi investor, untuk mencari bukti empiris dan menganalisis bahwa penelitian ini memiliki pengaruh informasi laba terhadap reaksi investor.Sampel penelitian adalah perusahaan yang terdaftar di Bursa Efek Indonesia selama tahun 2008-2012, yang diperoleh secara purposive. Teknik analisis data adalah analisis regresi linier berganda. Hasil penelitian adalahTimelinessberpengaruh signifikan terhadap reaksi investor, opinitidak berpengaruh signifikan terhadap reaksi investor, switching berpengaruh signifikan terhadap reaksi investor, perubahan reputasi KAPtidak berpengaruh signifikan terhadap reaksi investor, UE tidak berpengaruh signifikan terhadap reaksi investor.
Vss Speed Sensorless Control of PMSM

The speed sensorless control of nonsalient PMSM that uses estimated rotor flux instead of the transformation angle is designed. This paper introduces a new sequential switching control strategy for a current control of a three phase inverter. The key idea is to integrate the benefits of the variable structure system control design and the event-driven sequential control structures to raise the system performance and control efficiency. The design is applied to the control of three phase permanent magnet synchronous machine. The operation at low speed is improved by reducing the disturbance impact. The estimation angle error at zero speed is limited by injecting the DC current that compensates the unknown load torque and enables operation at zero speed. The VSS speed sensorless control of PMSM is implemented on a DSP/FPGA system, and verified experimentally.
Supermarket Commodity Sales Forecast Based on Data Mining

Based on the comparison of several basic models, a prediction model based on LightGBM and support vector regression model is proposed in this paper. This model not only extracts the features of the user’s behavior data and the features of commodity attributes, but also combined with the advantages of time sliding window in feature processing, extracts dynamic features by using the sale data of the commodity and correlation data, and then uses the fusion of multiple models to predict the commodity data. The experimental results show that after the feature extraction of sliding window method, by comparing support vector regression model and LightGBM prediction model, it is found that the effect of LightGBM prediction model is slightly better than the support vector regression model. By combining the support vector regression model and the LightGBM model, the root-mean-square error of the supermarket sales forecast model is 1.23209, which is significantly higher than the single model prediction results. Therefore, this model is an effective method to predict the sales volume of short-term supermarket