gebhart/patrepeval huggingface dataset:
Linear-Time Algorithms for the Farthest-Segment Voronoi Diagram and Related Tree Structures (2014)

Abstract. We present linear-time algorithms to construct tree-structured Voronoi diagrams, after the sequence of their regions at infinity or along a given boundary is known. We focus on Voronoi diagrams of line seg-ments, including the farthest-segment Voronoi diagram, the order-(k+1) subdivision within a given order-k Voronoi region, and deleting a seg-ment from a nearest-neighbor diagram. Although tree-structured, these diagrams illustrate properties surprisingly different from their counter-parts for points. The sequence of their faces along the relevant boundary forms a Davenport-Schinzel sequence of order 3. Once this sequence is known, we show how to compute the corresponding Voronoi diagram in linear time, expected or deterministic, augmenting the existing lin-ear frameworks for points in convex position, with the ability to handle non-uniqueness of Voronoi faces. Our techniques contribute towards the question of linear-time construction algorithms for tree-like Voronoi di-agrams. 1
Student Entrepreneurship: Demographics, Competences and Obstacles (2016)

In this report, we use a population-based approach to explore the entrepreneurial activities of 61,115 students, alumni of the 64 Italian universities that are members of the AlmaLaurea consortium, in the second half of 2014. Data were collected through a newly developed section of the AlmaLaurea survey, which will be consolidated in future rounds to allow to continue mapping student entrepreneurship in Italy and to provide robust empirical evidence to longitudinal analyses. Our results show that student entrepreneurs represent 2.7% of the sample whereas nascent entrepreneurs and non-entrepreneurs account for 3.8% and 93.5%, respectively. We profile and compare the three groups across several dimensions, such as demographics, mobility, field of study, sources of stimuli and competences, perceived obstacles, and support for entrepreneurship. The results shed light on the timely and relevant, yet understudied, phenomenon of student entrepreneurship, offering implications for both policy and practice.
Real-time, 3-D ultrasound with multiple transducer arrays (2006)

Modifications were made to a commercial real-time, three-dimensional (3-D) ultrasound system for near simultaneous 3-D scanning with two matrix array transducers. As a first illustration, a transducer cable assembly was modified to incorporate two independent, 3-D intra-cardiac echo catheters, a 7 Fr (2.3 mm O.D.) side scanning catheter and a 14 Fr (4.7 mm O.D) forward viewing catheter with accessory port, each catheter using 85 channels operating at 5 MHz. For applications in treatment of atrial fibrillation, the goal is to place the sideviewing catheter within the coronary sinus to view the whole left atrium, including a pulmonary vein. Meanwhile, the forward-viewing catheter inserted within the left atrium is directed toward the ostium of a pulmonary vein for therapy using the integrated accessory port. Using preloaded, phasing data, the scanner switches between catheters automatically, at the push of a button, with a delay of about 1 second, so that the clinician can view the therapy catheter with the coronary sinus catheter and vice versa. Preliminary imaging studies in a tissue phantom and in vivo show that our system successfully guided the forward-viewing catheter toward a target while being imaged with the sideviewing catheter. The forward-viewing catheter then was activated to monitor the target while we mimicked therapy delivery. In the future, the system will switch between 3-D probes on a line-by-line basis and display both volumes simultaneously.
ChemInform Abstract: A Concise Synthesis of Aza‐Dipeptide Isosteres. (1998)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Low temperature adhesive wafer bonding using OSTE(&#x002B;) for heterogeneous 3D MEMS integration (2013)

We demonstrate, for the first time, the use of off stoichiometry thiolene-epoxy, OSTE(+) for adhesive wafer bonding. The dual cure system, with an initial UV-curing step followed by a second thermal cure, allows for high bond strength and potentially high quality material interfaces. We show that cured OSTE(+) is easily removed in oxygen plasma and that the characteristics of OSTE(+) make it a potential candidate for use in heterogeneous 3D MEMS integration. Furthermore, we show how the bond energies of wafers bonded with OSTE(+) adhesive compares with the bond energies of wafers bonded with Cyclotene 3022-46 (BCB) and mr-I 9150XP nanoimprint resist.
Blumlein Configuration for High-Repetition-Rate Pulse Generation of Variable Duration and Polarity Using Synchronized Switch Control (2009)

Blumlein generators are used in different applications such as radars, lasers, and also recently in various biomedical studies, where the effects of high-voltage nanosecond pulses on biological cells are evaluated. In these studies, it was demonstrated that by applying high-voltage nanosecond pulses to cells, plasma membrane and cell organelles are permeabilized. As suggested in a recent publication, the repetition rate and polarity of nanosecond high-voltage pulses could have an important effect on the electropermeabilization process, and consequently, on the observed phenomena. Therefore, we designed a new Blumlein configuration that enables a higher repetition rate of variable duration of either bipolar or unipolar high-voltage pulses. We achieved a maximal pulse repetition rate of 1.1 MHz. However, theoretically, this rate could be even higher. We labeled endocytotic vesicles with lucifer yellow and added propidium iodide to a cell suspension for testing the cell plasma membrane integrity, so we were able to observe the permeabilization of endocytotic vesicles and the cell plasma membrane at the same time. The new design of pulse generator was built, verified, and also tested in experiments. The resulting flexibility and variability allow further in vitro experiments to determine the importance of the pulse repetition rate and pulse polarity on membrane permeabilization -- both of the cell plasma membrane as well as of cell organelle membranes.
Cooperative Translation Control based on Consensus with Reference Velocity: a Source-seeking Application (2013)

Abstract — This paper deals with the design of cooperative control laws for nonlinear multi-agent systems. On the first hand, the control objectives are to ensure that a group of agents reaches a time-varying circular formation characterized by some external references representing the position of the center of the formation and its derivatives. In order to reduce the amount of information to be shared, the second part of the paper considers the situation where only the velocity of the center of the formation is available to each agent. Then a distributed consensus algorithm is provided in order to satisfy the same control objectives. Finally, an application to the source-seeking problem is proposed to emphasize previous contribution. These results are supported through computer simulations. I.
Computational modelling and characterisation of nanoparticle-based tuneable photonic crystal sensors (2014)

Photonic crystals are materials that are used to control or manipulate the propagation of light through a medium for a desired application.
Calculation of the Grüneisen constant of glassy polymers from thermoelastic data (1978)

Abstract Thermoelastic measurements on a glassy polymer make it possible to measure directly the quantity α V / C p where α is the coefficient of linear expansion, V the specific volume, and C p the specific heat at constant pressure. By further measuring the bulk modulus ( B T ) it is possible to derive a relatively accurate value of the thermodynamic Gruneisen constant (γ T ) where γ T = 3 B T α V / C v . The values obtained decrease only slightly with temperature.
A hybrid finite element-boundary element method for the analysis of diffractive elements (1996)

Abstract We apply a two-dimensional hybrid finite element-boundary element method to the analysis of diffractive optical elements (DOEs). We use the finite element method to solve Helmholtz's equation in the interior of a DOE and use the boundary element method, a Green's function approach, to determine the fields exterior to the DOE. We couple the two methods at the DOE surface by enforcing field continuity conditions. We validate our implementation by comparing its results to the analytic solution for diffraction from a dielectric cylinder and to the scalar solution for far-field diffraction from a dielectric slab. We use the hybrid method to analyse the diffraction from an eight-level phase lens and a binary-phase lens that has subwavelength features.
A New Strategy for Fast MRI-Based Quantification of the Myelin Water Fraction: Application to Brain Imaging in Infants (2016)

The volume fraction of water related to myelin (fmy) is a promising MRI index for in vivo assessment of brain myelination, that can be derived from multi-component analysis of T1 and T2 relaxometry signals. However, existing quantification methods require rather long acquisition and/or post-processing times, making implementation difficult both in research studies on healthy unsedated children and in clinical examinations. The goal of this work was to propose a novel strategy for fmy quantification within acceptable acquisition and post-processing times. Our approach is based on a 3-compartment model (myelin-related water, intra/extra-cellular water and unrestricted water), and uses calibrated values of inherent relaxation times (T1c and T2c) for each compartment c. Calibration was first performed on adult relaxometry datasets (N = 3) acquired with large numbers of inversion times (TI) and echo times (TE), using an original combination of a region contraction approach and a non-negative least-square (NNLS) algorithm. This strategy was compared with voxel-wise fitting, and showed robust estimation of T1c and T2c. The accuracy of fmy calculations depending on multiple factors was investigated using simulated data. In the testing stage, our strategy enabled fast fmy mapping, based on relaxometry datasets acquired with reduced TI and TE numbers (acquisition <6 min), and analyzed with NNLS algorithm (post-processing <5min). In adults (N = 13, mean age 22.4±1.6 years), fmy maps showed variability across white matter regions, in agreement with previous studies. In healthy infants (N = 18, aged 3 to 34 weeks), asynchronous changes in fmy values were demonstrated across bundles, confirming the well-known progression of myelination.
Interference Tolerant Agile Cognitive Radio: Maximize Channel Capacity of Cognitive Radio (2007)

In this article we propose a novel Dynamic Spectrum Access (DSA) paradigm to combine the benefits of UWB transmission and cognitive radio technology to optimize the efficiency of wireless spectrum usage and maximize the channel capacity. Specifically, this work presents a multi-carrier platform not only transmits over unused spectrum "holes", but transmits over underused spectrum blocks as well, while minimizing interference to existing primary narrowband transmissions. It is also shown that current cognitive radio and UWB transmission are two special cases of the proposed general paradigm. As a direct result, this paradigm offers a high degree of flexibility of spectrum use for next generation wireless communication systems.
Stability of fiber-based organic electrochemical transistors with a gel electrolyte for wearable electronics (2022)

With the increasing interest in wearable electronics, still, building electronic circuits on fabrics is challenging. Among different approaches, fiber shape electrochemical transistors are potentially suitable for various applications, particularly for bioelectronics. Fiber-based devices are getting popular because of their low fabrication cost, lightweight, and mechanical flexibility without losing their properties as sensors and transistors. In this work, we have studied an organic electrochemical transistor made from two conductive threads with a gel electrolyte. The transistor was tested when it was exposed to an acidic solution which then showed a change in the drain current. The results from testing the conductive thread between the drain and source reviled the effect of the pH on the PEDOT:PSS coating used as the semiconducting material in the transistor design. The results are encouraging for the applications in new low-cost, flexible bioelectronics sensing devices.
Biofunctionalization of silver with biotynilated BSA for SPRI biosensing (2011)

Workshop
Next generation translation and localization: Users are taking charge (2010)

Nonprofit translation activity driven by users and volunteer translators now represent a market force that easily rivals the mainstream translation and localization industries. While they still try to understand the drivers behind this nonprofit movement and occasionally attempt to tap in to&#13;\nthese newly discovered “resources”, nonprofit translation efforts for good causes are growing at a phenomenal rate. This paper examines the case of The Rosetta Foundation as an example of a not-for-profit volunteer translation facilitator. The paper focuses on the motivating factors for&#13;\nvolunteer translators. A survey was distributed to the several hundred volunteers who signed up as translators in the first few months of The Rosetta Foundation’s launch. The paper provides some background on what might well become the next generation of translation and localization and present the results of the survey. Finally, we will explore how The Rosetta Foundation, and other not-for-profit translation organisations might better motivate volunteers to contribute their skills and expertise.
A ConceptLink graph for text structure mining (2009)

Most text mining methods are based on representing documents using a vector space model, commonly known as a bag of word model, where each document is modeled as a linear vector representing the occurrence of independent words in the text corpus. It is well known that using this vector-based representation, important information, such as semantic relationship among concepts, is lost. This paper proposes a novel text representation model called ConceptLink graph. The ConceptLink graph does not only represent the content of the document, but also captures some of its underlying semantic structure in terms of the relationships among concepts. The ConceptLink graph is constructed in two main stages. First, we find a set of concepts by clustering conceptually related terms using the self-organizing map method. Secondly, by mapping each document’s content to concept, we generate a graph of concepts based on the occurrences of concepts using a singular value decomposition technique. The ConceptLink graph will overcome the keyword independence limitation in the vector space model to take advantage of the implicit concept relationships exhibit in all natural language texts. As an information-rich text representation model, the ConceptLink graph will advance text mining technology beyond feature-based to structure-based knowledge discovery. We will illustrate the ConceptLink graph method using samples generated from benchmark text mining dataset.
The Use of Mannan-Oligosaccharides and/or Tannin in Broiler Diets (2006)

3 Abstract: Mannan-oligosaccharides (MOS) and tannin have been reported to have possible growth promoting properties and to possess properties which may control coccidiosis. A total of 300 broilers were divided into 15 groups of 20 birds (at day 1) and three groups of 20 birds were assigned to each dietary treatment. Treatment 1 was a negative control, basal diet, and MOS (SAF-Mannan, Lesaffre, 0.5 g/kg), tannin (condensed chestnut tannin, 0.5 g/kg) and MOS/tannin (0.5 and 0.5 g/kg respectively) were added to the basal diet to produce Treatments 2, 3 and 4. Treatment 5 was a positive control and contained the antibiotic growth promoter, avilamycin (Maxus®, Elanco). Birds assigned to Treatment 5 also received a commercial vaccine, BayCox 2.5% oral solution, in the drinking water (1 ml/litre) (positive control). Average daily gain, feed intake and feed conversion efficiency were determined weekly for 35 days. The birds were challenged with coccidiosis on day 28 by oral administration of a solution containing sporulated oocysts of Eimeri a acervulina, Eimeria tenella and Eimeria maxima. On day 35, birds were slaughtered and dissected and assessed for lesion scores at a number of regions along the intestinal tract. Neither MOS or tannin were effective in improving performance to a level comparable to that achieved with the use of the antibiotic growth promoter. The challenge with coccidiosis was successful, with birds across the treatments showing reduced growth on the subsequent seven days after infection. Supplementation of MOS or tannin either individually or in combination did not reduce the impact of coccidiosis. Chi-squared analysis of the intestinal lesion scores indicated that there was a significant effect of treatment, but it was not clear whether MOS or tannin offered a protective effect against coccidiosis.
Feline immunodeficiency virus vectors. Gene transfer to mouse retina following intravitreal injection (2002)

These studies demonstrate that intravitreal injection of FIV-based vectors can mediate efficient and lasting transduction of cells in the cornea, iris, and retina.
Pericardial Actinomycosis: Case Report and Review (1990)

Pericardial actinomycosis is rare and frequently goes unrecognized during life, a circumstance due in part to a paucity of clinical manifestations and to a low rate of positivity in cultures. We present a case report of pericardial actinomycosis and a review of 18 other cases reported in the literature since 1950. Possible risk factors include aspiration pneumonia, alcohol abuse, and periodontal disease. Actinomyces may cause purulent pericarditis that evolves into cardiac tamponade or constrictive pericarditis. Clues to the identity of the causative organism (e.g., draining sinus tracts and the presence of sulfur granules) are frequently absent, and cultures often fail to yield the organism. Histologic examination of material obtained by biopsy is often necessary to make the diagnosis. Most cases originate from a thoracopulmonary site of actinomycosis and spread directly to the pericardium. Widespread dissemination to extrathoracic organs is uncommon. Treatment consists of high-dose, long-term antimicrobial therapy as well as drainage of the pericardial space.
MAP Selection Algorithms Based on Future Movement Prediction Capability in Synthetic and Realistic Environment (2008)

Efficient mobility management involves micromobilityprinciples. The performance of the Hierarchical MobileIPv6 (HMIPv6) protocol, a representative micro-mobilityapproach, is affected by the Mobility Anchor Point (MAP)selection. In this paper, we propose a new selection method based on a prediction of the future movements of Mobile Nodes (MNs). The proposed algorithms exploit the information about the future availability of MAPs and choose those MAPs that assure a better service. An improvement to the evaluation methodology is also proposed. The algorithms are compared to each other notonly in synthetic but also in realistic internet topologies, which has not been a practice in the past. The simulation results show promising improvements in terms of distance from chosen MAPs and frequency of MAP changes. Moreover, we showed that, for perceivable improvement of MAP selection, absolute accuracy of movement prediction is not required. As pioneers in the mobility management analysis in realistic environment, we ascertain that offering MAP services over more than one Autonomous System (AS) proves beneficial.
Preliminary Studies on Electrolyte and Electrode Designs for Lithium-Oxygen Batteries and Their Electrochemical Performance (2017)

Lithium-oxygen batteries exhibit high charge-discharge capacity and are promising for energy storage applications, such as electrical vehicles. The electrodes and electrolytes in these batteries play an important role on battery life and performance. In this work, the effects of electrolyte composition and electrode design on battery performance were investigated.
Etude d'une nouvelle centrale Electro-thermo-solaire à cycle combiné bi- combustible (1995)

Un nouveau concept de centrale électro-solaire, développé au LENI et baptisé PAESI, repose sur l’utilisation rationnelle d’un ajout de combustible fossile, c’est à dire en exploitant au maximum son haut niveau exergétique dans le cadre d’un cycle combiné solaire “Brayton-Rankine”. Dans l’optique pragmatique retenue en vue d’une centrale pilote, l’apport solaire est parfaitement interposé entre deux étages de récupération et permet ainsi une souplesse d’utilisation et de très bonnes performances. La gestion de ce type d’aménagement est rendue efficace et optimale grâce à un développement original de modèles paramétriques et de programmes informatiques mis au point au LENI. L’étude de faisabilité du projet, menée à l’EPFL en collaboration avec des institutions suisses et tunisiennes et considérée comme cas de référence au programme PACES de l’Agence Internationale de l’Energie Task 3.4, a porté sur l’étude des potentialités qu’offre la filière électro-thermo- solaire en Tunisie. Dans cette communication on propose un nouveau modèle paramétrique de représentation basé sur une approche phénoménologique qui permet de simuler le fonctionnement instantané du nouveau cycle combiné solaire et de calculer ses performances énergétiques annuelles. Le développement du modèle paramétrique nous a permis d’envisager l’étude de faisabilité technico-économique d’un tel concept et cela en tenant compte d’une gestion opérationnelle instantanée c’est à dire loin des considérations simplistes rencontrées lors de ce type d’étude. L’avantage du code informatique développé réside dans le fait que l’on tient compte de tous les régimes variables des différentes appareils entrant en jeux sans recourir à des modèles complexes et à des structures lourdes. Aussi, on introduit au niveau de la simulation des lois de commande adaptatives. Ces lois devraient permettre, lors d’un fonctionnement réel de l’installation, de s’adapter aux conditions d’ensoleillement tout en tenant compte du régime de tarification de l’électricité et celle du combustible fossile employé.
Association Between Index Hospitalization and Hospital Readmission in Sepsis Survivors* (2015)

We confirmed that the majority of unplanned hospital readmissions after sepsis are due to an infection. We found that patients with sepsis at admission who developed a hospital-acquired infection, and those who received a longer duration of antibiotics, appear to be high-risk groups for unplanned, all-cause 30-day readmissions and infection-related 30-day readmissions.
Construction of a Tetracyclic Butterfly‐Like Scaffold: Palladium‐Catalyzed Heck/Arylation Cascade (2010)

Controlled carbopalladation: Only slight changes in the starting material (see scheme) resulted in rather different compounds in palladium-catalyzed domino reactions. A novel tetracyclic butterfly-like scaffold was constructed in a one-pot reaction via the Pd-catalyzed 5-exo-trig carbopalladation and arylation cascade in high yield.