Miracle-dz/UniFAR-FTUs huggingface dataset:
Imagerie radar par synthèse d'ouverture en basse fréquence

Les principaux avantages de l'imagerie radar par rapport a l'imagerie optique sont un fonctionnement par tous les temps, une resolution en distance independante de la portee et eventuellement une information polarimetrique sur les caracteristiques electriques du reflecteur. L'imagerie par synthese d'ouverture utilise le deplacement du radar pour former une antenne fictive et ainsi ameliorer la resolution transverse des images. L'evolution la plus recente du radar RAMSES de l'ONERA est une extension vers les basses frequences (bande P). Elles presentent l'interet de traverser le feuillage et penetrer dans le sol mais posent cependant des problemes specifiques qui font l'objet de cette these : algorithmie, etalonnage et analyse des images. La dimension accrue de l'antenne synthetique depasse la cadre d'application de l'algorithme Range Doppler classique. Le Range Migration Algorithm mis en oeuvre pendant ce travail, est apparu comme une solution adaptee a ce probleme. La procedure proposee pour l'etalonnage polarimetrique prend en compte le long de l'antenne synthetique, les variations d'attitude de l'avion et de reponse de la cible etalon -variations qui deviennent significatives dans cette configuration. L'analyse des images calibrees permet la mesure de l'attenuation a travers le couvert qui depend fortement de l'angle de vue et de la polarisation. Pour etendre cette analyse a la detection de cibles complexes (camions) sous couvert, un algorithme de detection de changements a ete developpe. La technique originale d'imagerie SAR verticale demontre aussi la penetration sous la feuillage. L'etude theorique menee sur le propagation dans le sol en bande P predit une attenuation fortement dependante de l'angle d'incidence, de la polarisation et surtout des conditions d'humidite. La possibilite d'observer des objets enterres est appuyee par les premiers resultats de la mise en oeuvre d'une procedure de stereoscopie sur la dune du Pilat qui fait apparaitre des structures non visibles en optique et probablement enfouies sous le sable.
Modeling and Control of Wind Turbine with Doubly Fed Induction Generator

The growing integration of wind energy into power networks will have a significant impact on power system stability. With the development of wind turbine (WT) techniques, the doubly fed induction generator (DFIG) becomes the dominant WT type used in wind farms. In this situation, DFIG should be modeled properly in power system stability analysis. A detailed model of the WT with DFIG and its associated controllers is presented, based on which the small signal stability model is derived. Small signal stability analysis shows that the DFIG control can significantly improve the stability of WT system. Applying a set of optimized controller parameters, the stability can be further enhanced. Dynamic simulations are performed to illustrate the control performance
Metabolic syndrome and bariatric surgery in stone disease etiology

Purpose of review To review the prevalence and mechanisms of stone formation in patients with metabolic syndrome and in those submitted to bariatric surgery. Recent findings MetS is associated with urinary stone disease, which appears to be sustained by dietetic factors and insulin resistance. The latter represented in obesity and diabetes favors uric acid precipitation in urine via a more acidic urinary load. Patients submitted to modern bariatric surgery are at risk of nephrolithiasis and nephropathy as a consequence of malabsorption and hyperoxaluria, which are more consistent after Roux-en-Y gastric bypass than after gastric banding. Other stone risk factors such as hypocitraturia may also be present. Summary Patients with metabolic syndrome and those submitted to modern bariatric surgery are both at risk of nephrolithiasis and nephropathy. Accurate stone screening careful monitoring of renal function and diet counseling are strongly encouraged in these patients.
Impact of analytics on strategic marketing performance

In the current era of digitalization new tools are being used to create competitive advantages in the market. The use of analytics in the strategic marketing involving segmenting, targeting and positioning (STP), have become a differentiator between successful and non-successful organizations that have access to big data. Even if most of the marketers seem to be aware of this, the number of companies collecting and leveraging their data is relatively reduced. In a general way there exist several practices of strategic marketing, but in order to be consistent they must be closely integrated to the business nature. This complicates their application and increases the costs. In this research, STP bases are analyzed and the potential application of current existing Business Intelligence tools.
A novel hybrid model for network intrusion detection

With the ever increasing importance and usage of Wireless Sensor Networks (WSN), security of the network has become a major concern. As more and more crucial applications of Wireless Sensor Networks are being found, more needs to be done to ensure the safety of the data and network. Intrusion detection is a method to find and establish appropriate defenses against any malicious attack on the network. However standard intrusion detection practices alone cannot ensure the safety of the wireless sensor networks due to various constraints on the power, memory and battery life of the sensors and on many other uncertain factors. In this paper we present an intrusion detection scheme using Neural Networks, Rough sets and Firefly Algorithm (FA).
Spectroscopie et imagerie térahertz des systèmes d'intérêt biologique.

Ce travail de these presente quelques exemples d'utilisation du rayonnement terahertz pour l'etude de systemes d'interet biologique. Nous avons construit et caracterise deux dispositifs experimentaux analogues, chacun concu de facon a servir a une famille d'applications particuliere. Ces dispositifs sont bases sur la generation et la detection des ondes terahertz a l'aides d'antennes photoconductrices pilotees par un laser infrarouge femtoseconde. Un premier dispositif terahertz, dedie a la spectroscopie dans le domaine temporel, permet de caracteriser de nombreux systemes plus ou moins homogenes du point de vue spectroscopique, c'est-a-dire d'obtenir la permittivite complexe du materiau et sa dependance spectrale. L'etude des nouveaux materiaux transparents en terahertz et des solutions ioniques aqueuses a l'aide de ce spectrometre terahertz a ete accomplie. Un deuxieme dispositif est consacre au developpement de nouvelles techniques d'imagerie terahertz en champ proche avec ouverture. En effet, un contraste fourni par la difference d'absorption des solutions ioniques a permis d'etudier des cellules biologiques de facon non-invasive ; il s'agit ici notamment de l'embryon de drosophile et du nerf sciatique de grenouille. Le lien entre ces deux thematiques est fait par la recherche sur les plasmons-polaritons de surfaces, des ondes electromagnetiques a la surface de metaux, qui, dans certaines conditions, permettent d'exalter la transmission a travers des ouvertures de taille inferieure a la longueur d'onde. Des etudes spectroscopiques ont permis de comprendre certaines proprietes fondamentales de ces ondes surfaciques en vue de leur application aux nouvelles sondes de champ proche.
The effect of professional skepticism, client pressure, auditor experience, and audit regulation on audit fraud (Empirical study in Headquarter Office of Badan Pemeriksa Keuangan RI)

Badan Pemeriksa Keuangan is a state institution authorized to audit reports on the management and accountability of state finances to the Central Government, Regional Government, Bank Indonesia, State-Owned Enterprises, Public Service Bodies, and Regional-Owned Enterprises. In carrying out its duties, BPK has several authorities that are BPK examine the object of examination, plan and conduct an inspection, determine the time and method of examination, and compile and present the report of the examination result. Based on the 1945 Constitution, BPK is an independent state institution so that in carrying out its duties, BPK perform independently and freely without any parties that can interfere or influence the examination report. But in fact, there are still many phenomena in which auditors conduct audit fraud by selling buying audit opinions and bribes to change the contents of the examination report. There are several factors that lead to audit fraud, such as professional skepticism, client pressure, auditor experience, and audit regulation. This study aims to examine the effects of professional skepticism, client pressure, auditor experience, and audit regulation on audit fraud. This research is a quantitative study with primary data from questionnaires distributed to BPK with respondents AKN II, III and IV. Sampling technique uses a convenience sampling method. Data analysis technique used is multiple regression analysis. The results of this study indicate that professional skepticism and audit regulation have a significant negative effect on audit fraud, the auditor's experience has a negative insignificant effect on audit fraud, while client pressure has an insignificant positive effect on audit fraud. Keywords : professional skepticism, client pressure, auditor experience, audit regulations, audit fraud.
Changes in Neuroactive Steroid Concentrations After Preterm Delivery in the Guinea Pig

Background: Preterm birth is a major cause of neurodevelopmental disorders. Allopregnanolone, a key metabolite of progesterone, has neuroprotective and developmental effects in the brain. The objectives of this study were to measure the neuroactive steroid concentrations following preterm delivery in a neonatal guinea pig model and assess the potential for postnatal progesterone replacement therapy to affect neuroactive steroid brain and plasma concentrations in preterm neonates. Methods: Preterm (62-63 days) and term (69 days) guinea pig pups were delivered by cesarean section and tissue was collected at 24 hours. Plasma progesterone, cortisol, allopregnanolone, and brain allopregnanolone concentrations were measured by immunoassay. Brain 5α-reductase (5αR) expression was determined by Western blot. Neurodevelopmental maturity of preterm neonates was assessed by immunohistochemistry staining for myelination, glial cells, and neurons. Results: Brain allopregnanolone concentrations were significantly reduced after birth in both preterm and term neonates. Postnatal progesterone treatment in preterm neonates increased brain and plasma allopregnanolone concentrations. Preterm neonates had reduced myelination, low birth weight, and high mortality compared to term neonates. Brain 5αR expression was also significantly reduced in neonates compared to fetal expression. Conclusions: Delivery results in a loss of neuroactive steroid concentrations resulting in a premature reduction in brain allopregnanolone in preterm neonates. Postnatal progesterone therapy reestablished neuroactive steroid levels in preterm brains, a finding that has implications for postnatal growth following preterm birth that occurs at a time of neurodevelopmental immaturity.
Prediction of unstable anticoagulation with acenocoumarol versus warfarin in atrial fibrillation.

BACKGROUND The SAMe-TT2R2 (sex female, age, medical history, treatment, tobacco use, race) score was developed in patients with atrial fibrillation (AF) on warfarin. The present study aimed to 1) compare the anticoagulation quality and management of AF patients treated with warfarin with those on acenocoumarol and 2) optimize the SAMe-TT2R2 score to detect AF patients at high risk of unstable anticoagulation with acenocoumarol and warfarin. METHODS In a single-center retrospective study, 320 patients with AF, including 15 (5%) after valve replacement, aged 40-82 (median 70) years, including 203 (63%) receiving acenocoumarol and 117 (37%) treated with warfarin, were studied. The SAMe-TT2R2 score was modified based on the candidate factors retrieved from univariate regression and assessed using the receiver operating curves (ROC). RESULTS A median SAMe-TT2R2 score was 2 (1-3). Proportions of patients with ≥ 2 points and 0-1 points in the SAMe-TT2R2 score who had the time in therapeutic range (TTR) ≤ 70% were similar (61 [67%] vs. 63 [56%], p = 0.11). A modified score, involving medical history (myocardial infarction [MI] and chronic obstructive pulmonary disease [COPD], 1 point), statin treatment (1 point) and tobacco use (2 points) had a higher area under the curve (AUC) in patients on acenocoumarol compared to SAMe- TT2R2 (0.66; 95% confidence interval 0.58-0.73 vs. 0.56; 0.48-0.64, p = 0.042); ≥ 1 point indicated TTR > 70% with a sensitivity and specificity of 61% and 63%, respectively. CONCLUSIONS The SAMe-TT2R2 score is less effective in predicting unstable anticoagulation with acenocoumarol versus warfarin. Adding statin use and highlighting COPD and previous MI increases a predictive value of this score for acenocoumarol.
The Role of Process Innovation between Organizational Capability and Software Project Success in Malaysian Public Sector

This study used the partial least square (PLS) and structural equation modeling (SEM) tool to examine factors influencing the process innovation of the organization capability in public sectors. It also measures the impact of process innovation on the success of software project process. Statistical results confirm that coordination of expertise, communication plan and IT infrastructure reach impact on process innovation while process innovation in turn positively influences the success of software project success. The result, besides indicating the suitability of the PLS in statistical analysis, has also contributed to a better understanding of the success of the software project process. Findings are useful for IT Managers and practitioners to improve the success of software project in Malaysian public sectors. Limitation and suggestion for future research are also included.
How does value creation manifests itself in cooperation between sport and business? A systematic review of literature.

Sport is a widely used as a vehicle for promoting business. Global brands invest tens of millions of euros in high performance athletes, top teams, and popular sporting events. Studies have also shown the potentiality of sport in the business context. However, relatively few studies have focused on the interaction of business and sport from a value-creation perspective. Knowledge focusing on value creation within and through sport is scattered throughout literature and a systematic understanding of how value creation manifests itself in a business context is lacking. Using a systematic literature review and inductive analysis of 44 empirical studies, the article presents six identified topics that represent the various angles to value creation in the nexus between sport and business. The topics are 1) the many shades of value, 2) brands and sponsorship as value-creators, 3) the value of CSR in and through sport, 4) sport as a network and platform, 5) sport for developing organisations internally, and 6) value congruence and identification. The article contributes to both business management and sports management. The article proposes theoretical and managerial implications and identifies avenues for further research.
Relação entre informática e linguística,ou ... entre informáticos e linguistas

Robert B. France “Model-driven Development of Complex Software”, presentation at SINTEF, May 28, 2009 Em engenharia informática, duas escolas para Tackling the abstraction challenge: 1. The extensible general-purpose school 2. The domain-specific language school Cada uma com os seus problemas! 1. Difficulty of identifying a small base set of modeling concepts that can be used to express a broad range of abstractions 2. Creating and evolving languages and their toolsets Isto lembra-vos alguma coisa?
Precious Cargo: Regulation of Sex-Specific Germ Cell Development in Mice

Although mammalian sex determination is normally specified genetically by an XX or XY chromosome complement, germ cells develop as sperm or oocytes in response to molecular cues provided by the gonadal somatic cells. In an ovary, germ cells enter meiosis during fetal life, thereby committing to oogenesis. In a testis, germ cells do not enter meiosis until after birth, at puberty. Recent findings indicate that, in mice, the sex-specific timing of entry into meiosis is governed by the balance between 2 secreted signalling molecules, retinoic acid (RA), which promotes entry into meiosis, and fibroblast growth factor 9 (FGF9), which counteracts RA. The combined action of these 2 molecular regulators provides a safety mechanism to guard against germ cell dysregulation that can lead to infertility or germ cell cancers.
Simulation numérique du contrôle de décrochage dynamique d'un profil en oscillation de tangage

L'enveloppe de vol des helicopteres est limitee par le decrochage dynamique, que le controle d'ecoulement permet de surmonter. Malgre de nombreuses etudes, aucun dispositif de controle ne s'est revele utilisable sur un rotor. Concu par l'ONERA, un Vortex Generator deployable (DVG) s'est revele efficace pour limiter les effets du decrochage dynamique d'un profil OA209 en oscillation de tangage. Mais l'etude de cet actionneur est necessaire avant son application. Le travail expose dans le present memoire s'attache a reproduire par simulations numeriques l'ecoulement du decrochage dynamique controle par DVG afin d'identifier les phenomenes physiques en jeu. Apres une premiere partie bibliographique dediee au controle de decrochage dynamique et aux Vortex Generators, une seconde partie a ete consacree a valider et etudier la simulation numerique du controle du decrochage statique. L'ecoulement induit a pu etre ainsi caracterise par les interactions tourbillonnaires presentes du fait de l'epaisseur du DVG et qui reduisent l'efficacite du controle. Cette analyse a permis d'elaborer une modelisation preliminaire du DVG. Dans une troisieme partie, la validation et l'etude de la simulation numerique du controle du decrochage dynamique a mis en evidence un effet de controle similaire au cas statique, et la decomposition en modes propres orthogonaux de l'ecoulement controle a montre une alteration du mode lie au tourbillon de decrochage dynamique. Ce travail valide la simulation numerique mise en place, laisse entrevoir des perspectives d'amelioration du dispositif de controle et permet la simulation numerique ulterieure du controle de decrochage dynamique de voilure tournante.
Clinical findings in MuSK‐antibody positive myasthenia gravis: A U.S. experience

We performed a retrospective chart review on 53 muscle‐specific kinase antibody (MuSK‐Ab)‐positive myasthenia gravis (MG) patients at nine university‐based centers in the U.S. Of these, 66% were Caucasian, 85% were women, and age of onset was 9–79 years. Twenty‐seven patients were nonresponsive to anticholinesterase therapy. Myasthenia Gravis Foundation of America improvement status was achieved in 53% patients on corticosteroids, 51% with plasma exchange, and in 20% on intravenous immunoglobulin (IVIG). Thymectomy was beneficial in 7/18 patients at 3 years. Long‐term (≥3 years) outcome was very favorable in 58% of patients who achieved remission and/or minimal manifestation status. Overall, 73% improved. There was one MG‐related death. This survey reinforces several cardinal features of MuSK‐Ab‐positive MG, including prominent bulbar involvement and anticholinesterase nonresponsiveness. Facial or tongue atrophy was rare. Most patients respond favorably to immunotherapy. The best clinical response was to corticosteroids and plasma exchange, and the poorest response was to IVIG. Long‐term outcome is favorable in about 60% of cases. Muscle Nerve, 2009
Further development of HVDC control

The principal function of the HVDC control is to control the power flow between the terminals. Moreover, it has to stabilize fast the connected AC systems which can suffer from even small disturbances. The paper presents a new HVDC control concept which effectively copes with the disturbances particularly in weak systems. The studies performed by PSCAD/EMTDC use the CIGRE benchmark HVDC and back-to-back HVDC scheme to confirm the advantages of the new control concept compared to the conventional one. The studies show that the operating point does not return directly to the pre-disturbance operating point when the conventional control concept is applied, however, the direct movement can be observed when the new control is used. Moreover, the studies of the fixed capacitor (FC) and the fixed reactor (FR) switching in a back-to-back HVDC scheme show the new control is more effective in damping voltage oscillations compared to the conventional one.
Green Consumers or Green Wild Goose Chase: Market Demand As a Determinant of Eco-Innovation in the Purchase of Refrigerators

This paper examined the determinants of eco-innovation from an evolutionary economics perspective. The focus was on consumer demand (pull) as a determinant of eco-innovation in the sale of consumer appliances (refrigerators). The research also addressed the effect of life cycle costing (LCC) and eco-labels on consumer demand for refrigerators. A mixed methodology approach combining quantitative analysis of web site sales was combined with qualitative content analysis of refrigerator product descriptions. The Energy Star eco-label and other environmental claims made in product descriptions were found to drive consumer demand for refrigerators. The research also found that consumers exhibited the willingness to pay (WTP) a premium for energy efficient and eco-innovative products when purchasing refrigerators from the Home Depot web site.
The Role of Peptide Growth Factors in Epithelial Ovarian Cancer

We studied the effect of epidermal growth factor, platelet-derived growth factor, fibroblast growth factor, and transforming growth factor-beta on proliferation of four epithelial ovarian cancer cell lines (OVCA 420, OVCA 429, OVCA 432, and OVCA 433). Epidermal growth factor stimulated growth of OVCA 429 cells (P=.0001) and OVCA 433 cells (P=.0002). Platelet-derived growth factor did not stimulate growth of any of the cell lines. Fibroblast growth factor stimulated growth of OVCA 420 cells (P=.003). Transforming growth factor-beta inhibited growth of OVCA 420 cells (P=.0001), OVCA 432 cells (P=.003), and OVCA 433 cells (P=.004). To detect production of known growth factors by the cancer cell lines, we tested the effect of cancer cell-conditioned media on proliferation of cell lines known to respond to growth factors. Only media exposed to OVCA 433 cells were found to contain activity that mimicked one of the known growth factors (transforming growth factor-beta). These results suggest that individual ovarian cancers vary widely in their response to and production of known peptide growth factors. Finally, we found that OVCA 429- conditioned medium significantly inhibited proliferation of mitogen-stimulated lymphocytes (P<.0001). The characteristics of this immunosuppressive factor were distinct from those of transforming growth factor-beta. Production of this factor by an immortalized cell line provides a unique opportunity to identify an immunosuppressive substance associated with ovarian cancer.