Miracle-dz/UniFAR-FTUs huggingface dataset:
Organisation et routage sémantiques dans les systèmes pair-à-pair

Peer-to-peer systems (P2P) are becoming a leading technology for multimedia resource access on the Internet. These systems can be classified depending on their underlying search model, which can be unstructured (queries are flooding in the peer’s network) or structured (queries are propagated according to a logical structure defined on peers). The unstructured model is less efficient but favours peer’s autonomy and supports more expressive query languages. Search efficiency in unstructured systems may be improved using some semantic inside the query process. This semantic is generally defined on peer’s content but may also used peer’s behaviour (query history). In this talk, we present a general overview of algorithms for semantic routing and organisation. We will give a focus on the work we have done in projects Rare and Respire combining semantic about peer’s content and behaviour. MOTS-CLES : pair-a-pair, routage semantique, recherche d’informations
Proximity, Knowledge and Innovation in Peripheral Regions. On the Intersection between Geographical and Organizational Proximity

Abstract What role do various kinds of proximity play in the current and projected development of peripheral areas? In summarizing and drawing conclusions from this special issue on proximity, this paper elaborates on two core notions of proximity, geographical and organizational. It presents a framework in which the relationship between geographical and organizational proximity is conceptualized in a way that is somewhat different from previous contributions, notably by the French School on Proximity. The framework is used to evaluate the outcomes of the various contributions in this issue. The findings endorse the idea that economic performance relies more on localized capacities to build “global” connections, complemented with an adequate local resource base, than on local networking and clustering.
On lifetime-based node failure and stochastic resilience of decentralized peer-to-peer networks

To model P2P networks that are commonly faced with high rates of churn and random departure decisions by end-users, this paper investigates the resilience of random graphs to lifetime-based node failure and derives the expected delay before a user is forcefully isolated from the graph and the probability that this occurs within his/her lifetime. Using these metrics, we show that systems with heavy-tailed lifetime distributions are more resilient than those with light-tailed (e.g., exponential) distributions and that for a given average degree, k-regular graphs exhibit the highest level of fault tolerance. As a practical illustration of our results, each user in a system with n = 100 billion peers, 30-minute average lifetime, and 1-minute node-replacement delay can stay connected to the graph with probability 1 - 1/n using only 9 neighbors. This is in contrast to 37 neighbors required under previous modeling efforts. We finish the paper by observing that many P2P networks are almost surely (i.e., with probability 1 -- o(1)) connected if they have no isolated nodes and derive a simple model for the probability that a P2P system partitions under churn.
Sequence-to-sequence models for punctuated transcription combining lexical and acoustic features

In this paper we present an extension of our previously described neural machine translation based system for punctuated transcription. This extension allows the system to map from per frame acoustic features to word level representations by replacing the traditional encoder in the encoder-decoder architecture with a hierarchical encoder. Furthermore, we show that a system combining lexical and acoustic features significantly outperforms systems using only a single source of features on all measured punctuation marks. The combination of lexical and acoustic features achieves a significant improvement in F-Measure of 1.5 absolute over the purely lexical neural machine translation based system.
Regularization of Linear Discrete-Time Periodic Descriptor Systems by Derivative and Proportional State Feedback

In this paper, we consider the regularization problem for the linear time-varying discrete-time periodic descriptor systems by derivative and proportional state feedback controls. Sufficient conditions are given under which derivative and proportional state feedback controls can be constructed so that the periodic closed-loop systems are regular and of index at most one. The construction procedures used to establish the theory are based on orthogonal and elementary matrix transformations and can, therefore, be developed to a numerically efficient algorithm. The problem of finite pole assignment of periodic descriptor systems is also studied.
Impact of Intellectual Capital on Exportation Performance: Research on the Turkish Automotive Supplier Industry

ABSTRACT Intellectual capital is a concept emphasizing the fact that the nonmaterial can create more values than the material, and also envisioning that business enterprises can create values through the development of employee relations, creativity, and innovation. The connection between increasing structural and functional performance of exportation and the accumulation of acquired intellectual capital of a business enterprise in today's databased competitive environment is a highly important issue. The purpose of this research is to determine the impact of acquired intellectual accumulation of business enterprises on their exportation performance, which operate in the Turkish automotive supplier industry following an export-based production policy. A survey has been conducted to achieve this goal on 107 enterprises active in automotive supplier industry that appear in “The Research of Most Exporting Companies in Turkey,” annually published by The Turkish Exporters Council. It has been determined by this research that the exportation performance of a business enterprise is greatly affected by its intellectual accumulation. The improvement of exportation performance of business enterprises, possessing accumulation of intellectual capital, is more positive as compared to the ones without it, in the aspects of structural, employee, and customer capital.
The Effect of Accounting Conservatism on Corporate Financing Activity: Evidence from Japan

This study examines how two types of conservatism ― unconditional conservatism and conditional conservatism ― affect Japanese firms’ financing activity, in particular, borrowing money from banks.This study obtained the two main findings. First, firms practicing a higher level of unconditional conservatism borrow more money from banks under the condition of facing a funding shortfall. Second, the degree of their conditional conservatism does not significantly relate with the degree of proceeds from loans. These results are robust to the endogeneity problem between conservatism and firms’ borrowing activity. In addition, I find that firms having a strong relationship with the main bank benefit from unconditional conservatism and conditional conservatism is useful for firms having a weak relationship with the main bank. This paper reveals that the economic consequences of conservatism vary across institutional factors and suggests the possibility that the nature of conservatism has been misjudged by focusing only on the accounting system when considering its economic consequences.
Does Lowering Glutamine Synthetase Activity in Nodules Modify Nitrogen Metabolism and Growth of Lotus japonicus?1

A cDNA encoding cytosolic glutamine synthetase (GS) from Lotus japonicus was fused in the antisense orientation relative to the nodule-specific LBC3 promoter of soybean (Glycine max) and introduced into L. japonicus via transformation with Agrobacterium tumefaciens. Among the 12 independent transformed lines into which the construct was introduced, some of them showed diminished levels of GS1 mRNA and lower levels of GS activity. Three of these lines were selected and their T1 progeny was further analyzed both for plant biomass production and carbon and nitrogen (N) metabolites content under symbiotic N-fixing conditions. Analysis of these plants revealed an increase in fresh weight in nodules, roots and shoots. The reduction in GS activity was found to correlate with an increase in amino acid content of the nodules, which was primarily due to an increase in asparagine content. Thus, this study supports the hypothesis that when GS becomes limiting, other enzymes (e.g. asparagine synthetase) that have the capacity to assimilate ammonium may be important in controlling the flux of reduced N in temperate legumes such as L. japonicus. Whether these alternative metabolic pathways are important in the control of plant biomass production still remains to be fully elucidated.
Maternal-fetal cholesterol transport in the placenta: good, bad, and target for modulation.

See related articles, pages 600–608 The transport of cholesterol from mother to fetus across the placental barrier has long been neglected. Although cholesterol is of vital importance for fetal development as a key constituent of cell membranes, precursor of steroid hormones and metabolic regulators (oxysterols), and a modulator of hedgehog signaling, it was generally assumed that most of it is synthesized de novo by the fetus and, to a lesser extent, by cells on the fetal side of the placenta. A contribution of placental cholesterol to fetal growth was supported by the fact that LDL-cholesterol concentrations in the umbilical cord vein (which delivers placental blood to the fetus) are greater than those in umbilical arteries,1 and by the ability of placental cells to secrete apolipoprotein (apo)B-containing particles.2 On the other hand, the case against maternal cholesterol transfer was based on the observation that the placental barrier is impermeable to labeled LDL and other lipoprotein particles and that genetically normal offspring of hypercholesterolemic mothers generally have very low cholesterol levels at term birth, whereas maternal cholesterol tends to be highest in the third trimester. Given the essential role of independent cholesterol synthesis, it is not surprising that most of the known genetic defects of cholesterol biosynthesis in fetuses severely impact their development and survival. The one exception is the Smith–Lemli–Opitz syndrome (SLO), a defect in the conversion of 7-dihydrocholesterol to cholesterol.3 Children with SLO are born relatively healthy and must therefore have obtained a minimum of cholesterol from the mother. Interest in potential mechanisms transporting cholesterol from mother to fetus was further stimulated by the recognition that maternal hypercholesterolemia, even if limited to …
The Genome of Herpes Simplex Virus: Structure, Replication and Evolution

SUMMARY The objectives of this paper are to discuss the structure and genetic content of the genome of herpes simplex virus type 1 (HSV-1), the nature of virus DNA replicative processes, and aspects of the evolution of the virus DNA, in particular those bearing on DNA replication. We are in the late stages of determining the complete sequence of the DNA of HSV-1, which contains about 155 000 base pairs, and thus the treatment is primarily from a viewpoint of DNA sequence and organization. The genome possesses around 75 genes, generally densely arranged and without long range ordering. Introns are present in only a few genes. Protein coding sequences have been predicted, and the functions of the proteins are being pursued by various means, including use of existing genetic and biochemical data, computer based analyses, expression of isolated genes and use of oligopeptide antisera. Many proteins are known to be virion structural components, or to have regulatory roles, or to function in synthesis of virus DNA. Many, however, still lack an assigned function. Two classes of genetic entities necessary for virus DNA replication have been characterized: cis-acting sequences, which include origins of replication and packaging signals, and genes encoding proteins involved in replication. Aside from enzymes of nucleotide metabolism, the latter include DNA polymerase, DNA binding proteins, and five species detected by genetic assays, but of presently unknown functions. Complete genome sequences are now known for the related alphaherpesvirus varicella-zoster virus and for the very distinct gammaherpesvirus Epstein-Barr virus. Comparisons between the three sequences show various homologies, and also several types of divergence and rearrangement, and so allow models to be proposed for possible events in the evolution of present day herpesvirus genomes. Another aspect of genome evolution is seen in the wide range of overall base compositions found in present day herpesvirus DNAs. Finally, certain herpesvirus genes are homologous to non-herpesvirus genes, giving a glimpse of more remote relationships.
Are Mergers Beneficial or Detrimental? Evidence from Advertising Agencies1

We study 33 pairs of advertising agencies that merged between 1947 and 1985, comparing each merging pair against two controls: (a) a pair of agencies with combined merger-date billings close to the total billings of the merged unit, and (b) a single agency with similar total merger-date billings. Gross revenues are the dependent variable. Results: Merging firms do worse in the short run than controls. Assuming similar subsequent rates of growth for merging and non-merging firms, a loss of 16 percent of firm value due to merging is implied.
A novel non-migration nano-Ag conductive adhesive with enhanced electrical and thermal properties via self-assembled monolayers modification

Silver migration has long been one of the most critical issues in semiconductor electronic industry, while no effective approaches have been developed to control silver migration and maintain its excellent electrical and thermal properties. In this paper, we report a novel approach of using molecular self-assembled monolayers (SAMs) to dramatically reduce silver migration in the nano-Ag conductive adhesives. The protection of silver nano particles with molecular monolayers reduced the silver migration dramatically and no migration was observed upon application of high voltages (up to 500 V) due to the formation of surface chelating compounds between the SAM and nano silver fillers. The migration behavior of SAM passivated nano-Ag conductive adhesives was investigated by analyzing the results with DiGiacomo's model. In addition to a controlled migration, the SAM passivated nano Ag fillers also enhanced the electrical conductivity and current carrying capability of ACA joints significantly due to the improved interfacial properties and high current density of those molecular monolayers. Unlike typical anisotropic conductive adhesive (ACA) joints which showed high joint resistance and limited current carrying capability, the joint resistance of the SAM incorporated nano-Ag conductive adhesive could be achieved as low as 10-5 Ohm (the contact area is 100 times 100 mum ) and the maximum allowable current was higher than 3500 mA. Furthermore, the improved electrical performance of SAM treated nano Ag ACAs was also achieved with the increased thermal conductivity. As such, a fine pitch, high performance, non-migration and high reliability adhesives are developed for potential solder replacement in high voltage, high power device applications. The novel approach for silver migration control and electrical properties enhancement can also be applied in next generation high performance semiconductor devices to replace aluminum and copper metallization with the better performance silver
Divest, Disregard, or Double Down?

How much, if at all, should an endowment invest in a firm whose activities run counter to the charitable missions the endowment funds? Endowments typically disregard the objectionable nature of or divest from such firms. However, if firm returns increase with activities the endowment combats, doubling down on the investment increases expected utility by aligning funding availability with need. I call this "mission hedging. " This paper offers the first model that characterizes the endowment's investment decision on the objectionable firm, defines investment trade-offs, and examines related evidence. Bad actors provide good opportunities to hedge mission-specific risks.
Catastrophic Losses and Insurer Profitability: Evidence from 9/11

We examine the effects of 9/11 on the insurance industry, hypothesizing a short-run claim effect, resulting from insufficient premium ex ante for catastrophic losses, and a long-run growth effect, resulting from ex post insurance supply reductions and risk updating. Following Yoon and Starks (1995) we use short- and long-run abnormal forecast revisions to measure both effects, analyzing them as a function of firm-specific characteristics. We find that firm type, loss estimates, reinsurance use, and tax position are important determinants of the short-run position. Firm type, loss estimates, financial strength, underwriting risk, and reinsurance are key determinants of the firm's long-run position.
An adaptive generalized predictive control of time-varying delay system

An adaptive generalized predictive control method based on variable delay parameter identification is proposed in This work to control time-varying processes with dominant and variable delay. The method obtains the control rule by regressive prediction of the system directly and avoids solving the Diophantine equation. Simulation results have confirmed the effectiveness of the proposed method.
A promising career? The thriving transition cycle.

This study was conducted with 24 young, male, elite athletes who were required to relocate to take up their football playing contracts. It examined the personal characteristics and processes of thriving during a geographically dislocating transition and broadened the traditional vulnerab ility and coping focus of transition research to one that incorporates positive learning and growth. A partially mixed, sequential design was employed, firstly to identify the features of the participant group. Despite their homogeneity on a range of instruments, the outcome variat ions were not adequately explained. Subsequently, the particular characteristics and processes that contribute to thriving were examined using a series of semi -structured interviews. From the results, a comprehensive analysis identified a group of 16 characteristics and associated processes. Based on the variations, the participants clustered in one of three categories; those who were thriving, surviving or languishing. Thriv ing was further examined in relation to a theoretical framework of transition as a cyclic, staged process where the trajectories of passages and adjustment strategies exert a significant influence on the outcomes. This study has important imp lications for the design of strategies to imp rove outcomes of those facing dislocating, challenging transitions.
Tetrakis[μ-2-(3-phenoxyphenyl)propionato-κ2 O:O′]bis[(dimethylformamide-κO)copper(II)]

The title compound, [Cu2(C15H13O3)4(C3H7NO)2], is formed by the chelate coordination of four racemic fenoprofenate (fenoprofenate is 2,3-phenoxyphenyl propionate) anions and two dimethylformamide molecules to two copper(II) ions, building a paddle-wheel dinuclear molecule. The distorted square-pyramidal coordination of each CuII atom is made up of four O atoms of the four fenoprofenate units and another O atom from a dimethylformamide molecule. The two enantiomeric forms of the fenoprofenate anions are present in the complex, in an optically inactive centrosymmetric arrangement.
Management and Clinical Outcomes of Acute Cardiac Tamponade Complicating Electrophysiologic Procedures: A Single‐Center Case Series

Background: Cardiac perforation with tamponade is an infrequent occurrence during an electrophysiologic procedure. The customary approach to management includes volume resuscitation followed by pericardiocentesis. Such a procedure, however, is not without its own risk, especially when performed emergently. We hypothesized that some patients experiencing this type of complication can be managed successfully in a conservative fashion, without the need for an additional invasive procedure.
A 60 pW g$_{m}$C Continuous Wavelet Transform Circuit for Portable EEG Systems

This paper presents a low power, low voltage and low frequency bandpass filter implementation of a continuous wavelet transform (CWT) for use with physiological signals in the electroencephalogram (EEG) range (1-150 μV, 1-70 Hz bandwidth). Experimental results are presented for a 1 V, 7th order gmC filter based CWT with filter center frequencies ranging from 1 to 64 Hz. Low power and low frequency operation is achieved by biasing the transconductor transistors at low current levels in the deep weak inversion region. The resulting increased mismatch and reduced bandwidth are compensated for at the topology level. The filter has a 43 dB dynamic range and a 60 pW power consumption. This power consumption is three orders of magnitude lower than existing CWT implementations and assessed via a suitable figure of merit the performance is better than all considered bandpass filters. The improvement in the state-of-the-art originates from the close integration of the application requirements, CWT theory, bandpass filter design theory, and low transconductance transconductor design. These topics are described in detail.
Study of Multilevel Sinusoidal PWM methods for cascaded h-bridge multilevel inverters

This paper is a study of Multilevel Sinusoidal Pulse Width Modulation (MSPWM) methods; Phase Disposition (PD), Alternate Phase Opposition Disposition (APOD), Phase Opposition Disposition (POD) on a single phase Cascaded H-Bridge Multilevel Inverter. Various factors such as amplitude modulation index (Ma), frequency modulation index (Mf), phase angle between carrier and reference modulating wave (Φ) have been considered for simulation. Variation in these factors and their effect on inverter performance is evaluated. Factors such as DC bus utilization, output r.m. s voltage, total harmonic distortion (%THD), dominant harmonic order, switching losses are evaluated based on simulation results.
Modified Access Sheath for Continuous Flow Ureteroscopic Lithotripsy: A Preliminary Report of a Novel Concept and Technique.

OBJECTIVE To improve the safety and efficacy of ureteroscopic lithotripsy for the treatment of ureteral stone, we made a simple modification to the standard ureteral access sheath (mUAS) and developed a novel technique to overcome the deficiencies of the current procedure. MATERIALS AND METHODS We added an oblique suction-evacuation port with pressure regulating mechanism to the UAS to allow active egress of irrigation fluid and stone fragments. A pressure vent was placed on the egress port. Continuous negative pressure aspiration was connected to the egress port, whereas the continuous irrigation was delivered through the endoscope with a pressure pump. Stone fragmentation was performed using a holmium-YAG laser through a semirigid ureteroscope. Tiny stone fragments were evacuated in the space between the sheath and the scope. When larger fragments came into the sheath that were too large to exit between the scope and the sheath, the scope was withdrawn to just proximal to the bifurcation of the oblique port. This opened up an unimpeded egress channel for the larger fragments. We attempted this procedure in 104 consecutive patients. RESULTS Seventy-four patients had effective insertion of mUAS. Seven patients failed semirigid ureteroscopy despite effective placement of mUAS. Patient with effective semirigid ureteroscopic lithotripsy had 100% immediate stone clearance and no observed stone retropulsion. Patients who failed semirigid ureteroscopy were converted to flexible ureteroscopy. Five patients had completed stone clearance. The overall immediate stone-free rate was 97.3% and 100% at 1-month follow-up. Complications included two fevers and one minor ureteral false passage. CONCLUSIONS Our modification of UAS has reduced stone retropulsion, improved stone clearance, improved visual field, and probably reduced the intraluminal pressure.