gebhart/patrepeval huggingface dataset:
Asynchronous Corner Detection and Tracking for Event Cameras in Real Time (2018)

The recent emergence of bioinspired event cameras has opened up exciting new possibilities in high-frequency tracking, bringing robustness to common problems in traditional vision, such as lighting changes and motion blur. In order to leverage these attractive attributes of the event cameras, research has been focusing on understanding how to process their unusual output: an asynchronous stream of events. With the majority of existing techniques discretizing the event-stream essentially forming frames of events grouped according to their timestamp, we are still to exploit the power of these cameras. In this spirit, this letter proposes a new, purely event-based corner detector, and a novel corner tracker, demonstrating that it is possible to detect corners and track them directly on the event stream in real time. Evaluation on benchmarking datasets reveals a significant boost in the number of detected corners and the repeatability of such detections over the state of the art even in challenging scenarios with the proposed approach while enabling more than a 4× speed-up when compared to the most efficient algorithm in the literature. The proposed pipeline detects and tracks corners at a rate of more than 7.5 million events per second, promising great impact in high-speed applications.
Factores de riesgo asociados al dolor de espalda en escolares de entre 10 y 12 años de Mallorca (2010)

El objetivo de esta investigacion es estudiar la existencia de dolor de espalda en escolares y determinar los factores de riesgo asociados a un mayor riesgo de padecerlo con el fin de disenar una intervencion. El presente estudio se llevo a cabo en 178 escolares (94 ninos y 84 ninas) de 10-12 anos, de Mallorca. La seleccion de los colegios se realizo por aleatorizacion estratificada, en funcion de tamano del centro, tipo y ubicacion. El cuestionario y la metodologia de recogida de datos fueron previamente validados mediante el metodo test-retest. Los resultados obtenidos muestran que la existencia de dolor de espalda fue del 61.2% (ninos en un 45.7% y ninas en un 78.6%). No existe relacion significativa alguna entre el deporte ni las horas de practica con la existencia o no de sintomas de dolor de espalda en los jovenes. En cuanto al peso de las mochilas, su peso medio fue 4.99 kg. equivalente al 11.9% del peso corporal de los ninos/as. Este estudio sugiere, a partir de los resultados obtenidos, y acorde con la literatura cientifica revisada que el dolor de espalda es un mal que afecta de manera importante a la poblacion juvenil, y mas concretamente entre los 10 y 12 anos.
MICROTERRITÓRIOS E SEGREGAÇÃO NO ESPAÇO PÚBLICO DA CIDADE CONTEMPORÂNEA (2013)

Neste artigo são discutidas as relações entre microterritorialidades urbanas e as estratégias de apropriação socioespacial do espaço público na cidade contemporânea, com o intuito de explicitar os conteúdos simbólicos e de cunho segregacionista que se manifestam através da constituição de territórios plásticos e móveis dos diferentes grupos sociais, classes e frações de classe. Essas questões são analisadas a partir de exemplos concretos em Paris e Salvador, que revelam os efeitos de classe (segmentação) e de massa (transversalidade) nos processos de apropriação de praias e parques em um contexto urbano/metropolitano. A operacionalização dos conceitos de território e espaço público na análise dos exemplos apresentados mostra, por outro lado, que as barreiras/os limites que se estabelecem entre os diferentes territórios resultam de uma dialética entre capital cultural e econômico que vai condicionar processos de segmentação/segregação no espaço público da cidade contemporânea, desvendando “identidades” baseadas nos modos de consumo do/no espaço.
Chemical constituents of Biophytum sensitivum (2003)

Two biflavones, cupressuflavone (1) and amentoflavone (2), three flavonoids, luteolin 7-methyl ether (3), isoorientin (4) and 3'-methoxyluteolin 7-O-glucoside (5), as well as two acids, 4-caffeoylquinic acid (6) and 5-caffeoylquinic acid (7) were isolated from the aerial parts of Biophytum sensitivum. Their structures were established on the basis of spectroscopic data.
Modulation of the folate receptor alpha gene by the estrogen receptor: mechanism and implications in tumor targeting. (2003)

The folate receptor (FR) type alpha is a promising target for diagnostic imaging agents and therapeutic intervention in major subtypes of gynecological malignancies; however, the receptor levels in the tumors are variable and are generally relatively low in estrogen receptor (ER)-positive tumors. Here we report that the FR-alpha gene promoter is repressed in the presence of 17beta-estradiol and derepressed by the antiestrogens tamoxifen and ICI 182780 in a promoter-specific and ER-alpha-dependent manner in carcinoma cell lines including HeLa (cervical carcinoma), BG-1 (ovarian carcinoma), and IGROV-1 (ovarian carcinoma). The ligand and ER dose response of the FR-alpha promoter and its time course paralleled those of a classical estrogen response element-mediated effect. Antiestrogens produced an ER-dependent increase of up to 36-fold in the expression of the endogenous FR-alpha gene. Deletion analysis and FR-alpha/SV40 promoter chimeras showed that the ER effect is mediated exclusively within the G/C-rich region in the TATA-less P4 promoter of FR-alpha; electrophoretic mobility shift analysis demonstrated interaction of ER at only one of three G/C-rich elements. ER-beta only modestly affected FR-alpha promoter activity but did not diminish the ER-alpha-mediated effects. The ER corepressor, SMRT, enhanced the repression by 17beta-estradiol/ER, but ER coactivators, including SRC family members, did not appreciably impact the ER ligand response. The results suggest that in ER+ tumors, FR-alpha expression is directly and actively suppressed and predict that a brief treatment with antiestrogens will boost FR-alpha expression by passive derepression, enhancing the efficacy of FR-targeted diagnostic and therapeutic applications. They also reveal novel aspects of gene repression by ER.
Head motions during dialogue speech and nod timing control in humanoid robots (2010)

Head motion naturally occurs in synchrony with speech and may carry paralinguistic information, such as intention, attitude and emotion, in dialogue communication. With the aim of verifying the relationship between head motion and the dialogue acts carried by speech, analyses were conducted on motion-captured data for several speakers during natural dialogues. The analysis results first confirmed the trends of our previous work, showing that regardless of the speaker, nods frequently occur during speech utterances, not only for expressing dialogue acts such as agreement and affirmation, but also appearing at the last syllable of the phrase, in strong phrase boundaries, especially when the speaker is talking confidently, or expressing interest in the interlocutor's talk. Inter-speaker variability indicated that the frequency of head motion may vary according to the speaker's age or status, while intra-speaker variability indicated that the frequency of head motion also differs depending on the inter-personal relationship with the interlocutor. A simple model for generating nods based on rules inferred from the analysis results was proposed and evaluated in two types of humanoid robots. Subjective scores showed that the proposed model could generate head motions with naturalness comparable to the original motions.
Thin Film Lithium Niobate Electro-optic Modulator Based on a Slow Wave Structure (2020)

We propose a thin film lithium niobate modulator based on photonic crystal waveguide and slow wave electrodes. Simulations predict a low half-wave voltage of 2 V as well as an ultrawide-bandwidth over 200 GHz.
Applied Natural Fracture Characterization Using Combination of Imagery and Transient Information: Case Studies from Cambro-Ordovician Tight Sandstones of Algeria (2008)

Abstract A majority of the world's oil and gas reserves are locked in tight, "unconventional", reservoirs. Without the presence of fractures (natural or hydraulic), these tight reservoirs with matrix permeabilities, usually less than 0.1md and porosities between 3-10PU, do not produce commercially. While hydraulic fracturing is widely used to improve the economic viability of wells, and fields to that matter, the presence of natural fractures plays the same role in improving the flow mechanics. As an industry, there are many tools available which characterize the properties of a created hydraulic fracture from both the predictive and evaluative standpoint. This is important in understanding the impact these properties have in increasing the production from a specific wellbore. Typically, we characterize these hydraulically induced fractures in terms of fracture height, length, width, and conductivity. These fracture characteristics are estimated using a variety of techniques including, pressure transients, production transients, micro-seismic, and various other techniques. However the ability to fully characterize natural fractures in terms other than pure qualitative (number of fractures observed, open or closed) has been limited in application and often only address conductivity. Based on case studies from Cambro-Ordovician tight sandstone reservoirs of the Hassi Messaoud field in Algeria, this paper describes methods that can be used to fully characterize natural fractures in terms commonly used for hydraulic fractures. With the application of combined imagery packages along with analyses of both pressure and production transient data, we now have the means to both understand the long-term impact of natural fracturing by associating quantitative properties that characterize both their locally observed (in-well) and far-field properties.
Thyrotoxic Periodic Paralysis: A Case Report (2002)

Thyrotoxic periodic paralysis (TPP) is manifested as recurrent episodes of muscle weakness, involving mainly the extremities ,lasting from hours to days. Hypokalemia and thyrotoxicosis are usually present during attacks. Although not a very common presentation of hyperthyroidism, TPP is the leading cause of hypokalemic periodic paralysis (HPP) in Asian populations. For patients presenting with hypokalemic paralysis in the emergency room (ER) , TPP should be included in the differential diagnosis and the thyroid function tests should be checked. Treatment of the underlying hyperthyroidism cures the TPP ;and potassium and propranolol can be used with caution to hasten recovery in the ER. We report on a 41-year-old Chinese man with TPP successfully managed by potassium administration ,and throidectomy.
Highly Active, Productive, and Syndiospecific Yttrium Initiators for the Polymerization of Racemic β‐Butyrolactone (2006)

Alternate tacticities: The ring-opening polymerization of rac-β-butyrolactone (rac-BBL) using a six-coordinate yttrium complex bearing a dianionic amine-bis(phenolate) ligand as initiator proceeds readily at room temperature to give the corresponding poly(3-hydroxybutyrate) (PHB) with up to 94 % syndiotacticity and narrow molecular-weight distributions (see scheme). Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2006/z600058_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
A case-study on using an Automated In-process Software Engineering Measurement and Analysis system in an industrial environment (2009)

Automated systems for measurement and analysis are not adopted on a large scale in companies, despite the opportunities they offer. The fear of the ldquobig brotherrdquo and the lack of reports giving insights into the real adoption process and concrete usages in industry are barriers to this adoption. We report on a case-study on the adoption and long-term usage (2 years of running system) of such a system in a company focusing on the adoption process and the related challenges we encountered.
Bend Loss, Tapering, and Cladding-Mode Coupling in Single-Mode Fibers (2007)

A new approach to the physical description and quantification of total bend loss in arbitrarily bent single-mode fiber is based on the coupling of the fundamental mode to cladding modes caused by curvature change. A criterion is derived that limits the maximum allowable rate of change of curvature to reduce bend loss to almost arbitrarily low levels regardless of the maximum curvature, provided only that the coating index is sufficiently smaller than the cladding index. This criterion is less demanding for pre- tapered fibers or fibers with a thinner cladding.
A self-calibration algorithm for an asynchronous CDMA-based antenna array (2002)

A new iterative calibration algorithm for an asynchronous CDMA-based antenna array in the presence of unknown gain and phase errors is presented. The algorithm is applicable to a nonuniform array where the number of users could be greater than the number of antennas, and does not require a prior knowledge of the DOAs of the signals of any user. The method requires the code sequence of a reference user only. The proposed algorithm provides us with the joint estimates of the spatial signature and the channel impulse response of the used signal sources as well as the calibration of the sensor gains and phases, even under multiple access interference. The algorithm is near-far resistant and thus well suited for the multipath fading channel.
Anti-Aging Effects of Probiotics. (2016)

The body of evidence demonstrating the beneficial effects of probiotics on the skin continues to grow in the published literature. Insights into their effects at the molecular level, in animal models, and in human clinical trials build the case for their role in slowing the skin manifestations of both intrinsic and extrinsic aging. The reports reviewed in this manuscript demonstrate that probiotics can restore acidic skin pH, alleviate oxidative stress, attenuate photoaging, improve skin barrier function, and enhance hair quality.
Level of Expression of IL-13Rα2 Impacts Receptor Distribution and IL-13 Signaling (2006)

IL-13, a critical cytokine for allergic inflammation, exerts its effects through a complex receptor system including IL-4Ralpha, IL-13Ralpha1, and IL-13Ralpha2. IL-4Ralpha and IL-13Ralpha1 form a heterodimeric signaling receptor for IL-13. In contrast, IL-13Ralpha2 binds IL-13 with high affinity but does not signal. IL-13Ralpha2 exists on the cell surface, intracellularly, and in soluble form, but no information is available regarding the relative distributions of IL-13Ralpha2 among these compartments, whether the compartments communicate, and how the relative expression levels impact IL-13 responses. Herein, we investigated the distribution of IL-13Ralpha2 in transfected and primary cells, and we evaluated how the total level of IL-13Ralpha2 expression impacted its distribution. Our results demonstrate that the distribution of IL-13Ralpha2 is independent of the overall level of expression. The majority of the IL-13Ralpha2 protein existed in intracellular pools. Surface IL-13Ralpha2 was continually released into the medium in a soluble form, yet surface expression remained constant supporting receptor trafficking to the cell surface. IL-13Ralpha2 inhibited IL-13 signaling proportionally to its level of expression, and this inhibition could be overcome with high concentrations of IL-13.
Exploring Synergy in Combinations of Tumor-Derived Vaccines That Harbor 4-1BBL, OX40L, and GM-CSF (2017)

Recent studies have demonstrated that combination of modulatory immune strategies may potentiate tumor cell elimination. Most strategies rely on the use of monoclonal antibodies that can block cell surface receptors to overcome tumor-induced immunosuppression or acting as costimulatory ligands to boost activation of T cells. In this study, we evaluate the use of combinations of genetically modified tumor-derived cell lines that harbor the costimulatory T cell ligands 4-1BB ligand, OX40L, and the cytokine GM-CSF. The aim of these treatments is to boost the activation of T cells and the elimination of cancer cells. These tumor-derived cells are able to activate or reinforce T cell activation, thereby generating a potent and specific antitumor response. We developed a high-content <i>in vitro</i> imaging assay that allowed us to investigate synergies between different tumor-derived cells expressing modulatory immune molecules, as well as the influence on effector T cells to achieve tumor cell death. These results were then compared to the results of <i>in vivo</i> experiments in which we challenged immunocompetent animals using the B16F10 syngeneic model of melanoma in C57BL6 mice. Our results suggest that there is a substantial therapeutic benefit to using combinations of syngeneic tumor vaccines that express immune modulators. In addition, we observed that combinations of tumor-derived cells that expressed costimulatory ligands and GM-CSF induced a long-term protective effect by preventing cancer development in both cured and rechallenged animals.
Akt, MAPK (Erk1/2), and p38 Act in Concert to Promote Apoptosis in Response to ErbB Receptor Family Inhibition (2001)

The ErbB receptor family is implicated in the malignant transformation of several tumor types and is overexpressed frequently in breast, ovarian, and other tumors. The mechanism by which CI-1033 and gemcitabine, either singly or in combination, kill tumor cells was examined in two breast lines, MDA-MB-453 and BT474; both overexpress the ErbB-2 receptor. CI-1033, a potent inhibitor of the ErbB family of receptor tyrosine kinases, reduced levels of activated Akt in MDA-MB-453 cells. This effect alone, however, did not induce apoptosis in these cells. Gemcitabine treatment resulted in a moderate increase in the percentage of apoptotic cells that was accompanied by activation of p38 and MAPK (ERK1/2). CI-1033 given 24 h after gemcitabine produced a significant increase in the apoptotic fraction over treatment with either drug alone. During the combined treatment p38 remained activated, whereas Akt and activated MAPK were suppressed. Substitution of CI-1033 with the phosphatidylinositol 3-kinase inhibitor LY294002 and the MAPK/ERK kinase inhibitor PD 098059 in combination with gemcitabine produced the same results as the combination of CI-1033 and gemcitabine. p38 suppression by SB203580 prevented the enhanced cell kill by CI-1033. In contrast to MDA-MB-453, BT474 cells exhibited activated p38 under unstressed conditions as well as activated Akt and MAPK. Treatment of BT474 cells with CI-1033 inhibited both the phosphorylation of Akt and MAPK and resulted in a 47% apoptotic fraction. Gemcitabine did not cause apoptosis in the BT474 cells. These data indicate that suppression of Akt and MAPK in the presence of activated p38 results in cell death and a possible mechanism for the enhanced apoptosis produced by the combination of CI-1033 and gemcitabine in MDA-MB-453 cells. Furthermore, tumors that depend on ErbB receptor signaling for survival and exhibit activated p38 in the basal state may be susceptible to apoptosis by CI-1033 as a single agent.
Stable multilongitudinal-mode operation of a diode-pumped twisted-mode intracavity doubled Nd:YAG laser (1990)

The instabilities which can occur in intracavity doubled Nd:YAG lasers are well known. Amplitude fluctuations, caused by the nonlinear interaction of sum generation and spatial hole burning, are often observed as noise at kilohertz frequencies.1 Suppressing these fluctuations will clearly involve controlling the underlying nonlinearities. Only limited control of sum generation is possible; it has been observed that with polarization control, the summing of orthogonally polarized modes can be eliminated.2
The Friction Behavior and Wear Mechanism of Nickel Containing Hydrogenated Amorphous Carbon Composite Films (2007)

International audience
Methylene Green Voltammetry in Aqueous Solution:  Studies Using Thermal, Microwave, Laser, or Ultrasonic Activation at Platinum Electrodes (1999)

The voltammetry of the aqueous two-electron reduction of the phenothiazine dye methylene green, known to be passivating at platinum electrodes, is reported under simultaneous activation with each of the following techniques: thermal activation in the temperature range 15−80 °C, pulsed microwave activation with a modified 800 W, 2.45 GHz domestic microwave oven, 10 Hz pulsed laser activation with a Nd:YAG laser at 532 nm, sonication, or ultrasonic activation where a 20 kHz ultrasonic horn probe is employed to generate an aqueous/organic solvent emulsion. The relative merits of the five methodologies are compared and discussed in terms of surface activation and cleaning, mass-transport enhancement, and reduction mechanism elucidation. Comparisons are also drawn with the voltammetry of methylene blue, a dye of the same family. This is the first full report of both the effects of microwave heating on surface redox electrochemistry and of the sonoemulsion technique.
Code as Power: How the New World Order Is Reinforcing the Old (2010)

This essay is a response to the popular and somewhat simplistic belief that “digital technologies by their nature undermine the authority of existing institutions.” With the help of a few case studies from the histories of virtual identity, Internet governance, and the digital economy, this essay argues that although technology-driven disturbances to the outer layers of traditional institutions are common, such disruptions have generally been quite transient and superficial.  Ultimately, powerful institutions that are introduced to new technological paradigms not only survive, but thrive--the process of adapting their outer layers to deal with technological disruptions radically strengthening their core structures and consolidating their authority.
A 24Mb/s radix-4 logMAP turbo decoder for 3GPP-HSDPA mobile wireless (2003)

A 24Mb/s 3GPP-HSDPA radix-4 logMAP turbo decoder is designed for 3G data terminals. It features an approximate radix-4 logsum circuit to achieve 145MHz operation. Power is reduced using 1/2-iteration early termination and extrinsics are interleaved in companded format. The decoder core is 14.5mm/sup 2/ in 0.18/spl mu/m CMOS.
Dye-sensitized solar cells consisting of dye-bilayer structure stained with two dyes for harvesting light of wide range of wavelength (2008)

Dye-sensitized solar cells (DSCs) containing dye-bilayer structure of black dye and NK3705 (3-carboxymethyl-5-[3-(4-sulfobutyl)-2(3H)-bezothiazolylidene]-2-thioxo-4-thiazolidinone, sodium salt) in one TiO2 layer (2-TiO-BD-NK) are reported. The 2-TiO-BD-NK structure was fabricated by staining one TiO2 layer with these two dyes, step by step, under a pressurized CO2 condition. The dye-bilayer structure was observed by using a confocal laser scanning microscope. The short circuit current (Jsc) and the incident photon to current efficiency of the cell (DSC-2-TiO-BD-NK) was almost the sum of those of DSC stained with black dye only (DSC-1-TiO-BD) and DSC stained with NK3705 only (DSC-1-TiO-NK).
Dual-frequency Doppler-lidar method of wind measurement (1980)

In this new method [dual-frequency Doppler-lidar (DFDL)] of remote wind sensing, two optical beams of unlike frequency are superimposed in the sensed volume. The velocity information is obtained from the difference in the Doppler shifts of light scattered from the two beams by aerosols moving with the air. The DFDL signal spectrum and expressions for SNR are derived. Attractive characteristics of DFDL include resilience to optical imperfections of the turbulent atmosphere and a potential for simultaneous measurement of the three components of wind velocity.
Monte Carlo Syntax Marginals for Exploring and Using Dependency Parses (2018)

Katherine Keith, Su Lin Blodgett, Brendan O’Connor. Proceedings of the 2018 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, Volume 1 (Long Papers). 2018.