gebhart/patrepeval huggingface dataset:
A practical wireless charging system based on ultra-wideband retro-reflective beamforming (2010)

Numerous portable electronic devices (such as laptops, cell phones, digital cameras, and electric shavers) rely on rechargeable batteries and must be routinely charged by the line power. A wireless charging technique capable of delivering electromagnetic energy to these portable devices would make them tether free and "truly portable." Wireless charging is especially valuable for devices with which wired connections are intractable, e.g., unattended radio frequency identification tags and implanted sensors. In recent years, enormous research efforts have been devoted to wireless charging. In 1990s, a case study is reported to construct a point-to-point wireless electricity transmission to a small isolated village called Grand-Bassin in France. In 2007, an inductive resonance coupling scheme, which makes use of near-field coupling between two magnetic resonators, was demonstrated able to power a 60-Watt light bulb over two meters by a team of Massachusetts Institute of Technology. In addition, several companies (PowerCast, WildCharge, WiPower, etc.) have developed products targeting specific applications. Nevertheless, several technical challenges remain to be resolved in order to accomplish practical wireless charging. Specifically, (i) to achieve efficient charging over long distance, severe power loss due to electromagnetic wave propagation must be remedied; (ii) humans' exposure to electromagnetic radiation should always be kept below safety level while sufficient power is delivered to devices; and (iii) some existing systems are unsuitable for ubiquitous deployment due to high cost, large size, and/or heavy weight. In this paper, an innovative wireless charging system based on ultrawideband retro-reflective beamforming is proposed to address the above challenges. The proposed charger consists of multiple antenna elements distributed in space. According to pilot signals (which are short impulses) they receive from the target device, the antenna elements jointly construct a focused electromagnetic beam onto the device (i.e., beamforming). Beamforming enables spatially focused/dedicated power delivery to devices while keeping power level in all the other locations minimal. As a result, the proposed system attains high charging efficiency and leads to little hazard/interference to other objects. Performance of the proposed wireless charging system is demonstrated by some simulation results obtained by a full-wave Maxwell's equations solver.
Scalable Array Technologies for Converged-RF Applications (2022)

High-performance radar systems utilize phased ar-rays to maximize their link budgets by focusing antenna radiation in a desired direction. While traditional versions of these systems have limited their operation to different radar modes only, future designs are being tasked with additionally supporting other wireless applications, such as communications and surveillance. This multi-usage of a single wireless resource is referred to as RF convergence, and is enabled by the incorporation of same-frequency simultaneous transmit and receive (STAR) technology. This paper discusses the critical research areas that require maturation before scalable-STAR arrays can become a reality for converged-RF applications.
Propitious Checkpoint Intervals to Improve System Performance (2009)

The large scale of current and next-generation massively parallel processing (MPP) systems presents significant challenges related to fault tolerance. For applications that perform periodic checkpointing, the choice of the checkpoint interval, the period between checkpoints, can have a significant impact on the execution time of the application and the number of checkpoint I/O operations performed by the application. These two metrics determine the frequency of checkpoint I/O operations performed by the application, and thereby, the contribution of the checkpoint operations to the I/O bandwidth demand made by the application. In a computing environment where there are concurrent applications competing for access to the network and storage resources, the I/O demand of each application is a crucial factor in determining the throughput of the system. Thus, in order to achieve a good overall system throughput, it is important for the application programmer to choose a checkpoint interval that balances the two opposing metrics - the number of checkpoint I/O operations and the application execution time. Finding the optimal checkpoint interval that minimizes the wall clock execution time, has been a subject of research over the last decade. In this paper, we present a simple, elegant, and accurate analytical model of a complementary performance metric - the aggregate number of checkpoint I/O operations. We model this and present the optimal checkpoint interval that minimizes the total number of checkpoint I/O operations. We present extensive simulation studies that validate our analytical model. Insights provided by this model, combined with existing models for wall clock execution time, facilitate application programmers in making a well informed choice of checkpoint interval leading to an appropriate trade off between execution time and number of checkpoint I/O operations. We illustrate the existence of such propitious checkpoint intervals using parameters of four MPP systems, SNL's Red Storm, ORNL's Jaguar, LLNL's Blue Gene/L (BG/L), and a theoretical Petaflop system.
De l'intégration de données mesurées dans la simulation numérique (2017)

International audience
Mechanisms of Morphine-Related Cardioprotection (2002)

Intravenous administration of morphine has clinical advantages in patients with acute coronary syndrome and heartfailure.The cellular mechanisms of morphine have been investigated extensively in recent years. Morphine preconditioning demonstrated in animal models provided the first step in our understanding of morphine-related cardioprotection. Further studies revealed that morphine is involved in some signaling pathways: (1)morphine preconditioning via a glibenclamide-sensitive pathway; (2)morphine preconditioning via glibenclamide-insensitive pathways including transient triggering of free radicals formation, activation of mitochondrial ATP-sensitive potassium channels (mitochondrial KATP channels)and activation of neutral endopeptidase 24.11.
Colored Potato Bioactive Compounds Suppress Proliferation and Induce Apoptosis in Both Androgen‐Dependent and –Independent Prostate Cancer Cell Lines (2008)

We recently reported that colored potato extracts induce apoptosis in LNCaP (androgen‐dependent) and PC‐3 (androgen‐independent) prostate cancer cell lines via caspase‐dependent and ‐independent pathways. In order to identify the most active growth inhibiting and pro‐apoptotic compounds in the potato extract, we have further investigated the effects of different phenolic compounds (chlorogenic acid, caffeic acid, gallic acid, catechin and malvidin) and glycoalkaloids (α‐ chaconine and solanine) found in these extracts on PC‐3 and LNCaP cells. α‐ chaconine (5 μg/ml) and gallic acid (10 μg/ml) showed potent antiproliferative properties and increased levels of the cyclin‐dependent kinase inhibitor p27 in both cell lines. Gallic acid decreased cyclin D1 levels in LNCaP cells. The growth inhibitory effects of α‐ chaconine were potentiated by SP600125, a c‐jun N‐terminal kinase (JNK) inhibitor, and atractyloside, an ADP phosphorylation inhibitor in both cell lines. Both α‐ chaconine and gallic acid induced caspase‐dependent apoptosis through PARP cleavage and activation of caspase‐3 in LNCaP cells. However, induction of apoptosis in PC‐3 cells was caspase‐independent. These results suggest that apoptosis induced by whole potato extracts in prostate cancer cell lines may be in part due to α‐ chaconine and gallic acid. CSREES special research grant.
Quantum-dot micropillar lasers subject to coherent time-delayed optical feedback from a short external cavity (2019)

We investigate the mode-switching dynamics of an electrically driven bimodal quantum-dot micropillar laser when subject to delayed coherent optical feedback from a short external cavity. We experimentally characterize how the external cavity length, being on the same order than the microlaser's coherence length, influences the spectral and dynamical properties of the micropillar laser. Moreover, we determine the relaxation oscillation frequency of the micropillar by superimposing optical pulse injection to a dc current. It is found that the optical pulse can be used to disturb the feedback-coupled laser within one roundtrip time in such a way that it reaches the same output power as if no feedback was present. Our results do not only expand the understanding of microlasers when subject to optical feedback from short external cavities, but pave the way towards tailoring the properties of this key nanophotonic system for studies in the quantum regime of self-feedback and its implementation to integrated photonic circuits.
An instrument for colorectal anastomosis without sutures (1963)

A new instrument for joining the colon to the lower part of the rectum without sutures has been described. Initial tests in dogs and its use in one patient have been satisfactory. Further trial of the device is considered justified.
Conformation and Dynamics of the SH1−SH2 Helix in Scallop Myosin (2003)

Atomic structures of scallop myosin subfragment 1(S1) with the bound MgADP, MgAMPPNP, and MgADP.BeF(x) provide crystallographic evidence for a destabilization of the helix containing reactive thiols SH1 (Cys703) and SH2 (Cys693). A destabilization of this helix was not observed in previous structures of S1 (from chicken skeletal, Dictyostelium discoideum, and smooth muscle myosins), including complexes for which solution experiments indicated such a destabilization. In this study, the factors that influence the SH1-SH2 helix in scallop S1 were examined using monofunctional and bifunctional thiol reagents. The rate of monofunctional labeling of scallop S1 was increased in the presence of MgADP and MgATPgammaS but was inhibited by MgADP.V(i) and actin. The resulting changes in ATPase activities of S1 were symptomatic of SH2 and not SH1 modification, which was confirmed by mass spectrometry analysis. With bifunctional reagents of various lengths, cross-linking did not occur on a short time scale in the absence of nucleotides. In the presence of MgADP, cross-linking was greatly enhanced for all of the reagents. These reactions, as well as the formation of a disulfide bond between SH1 and SH2, were much faster in scallop S1.ADP than in rabbit skeletal S1.ADP and were rate-limited by the initial attachment of the reagent to scallop S1. The cross-linking sites were mapped by mass spectrometry to SH1 and SH2. These results reveal isoform-specific differences in the conformation and dynamics of the SH1-SH2 helix, providing a possible explanation for destabilization of this helix in some scallop S1 but not in other S1 isoform structures.
SU‐G‐TeP3‐02: Determination of Geometry‐Specific Backscatter Factors for Radiobiology Studies (2016)

Purpose: Radiation biology research relies on an accurate radiation dose delivered to the biological target. Large field irradiations in a cabinet irradiator may use the AAPM TG‐61 protocol. This relies on an air‐kerma measurement and conversion to absorbed dose to water (Dw) on the surface of a water phantom using provided backscatter factors. Cell or small animal studies differ significantly from this reference geometry. This study aims to determine the impact of the lack of full scatter conditions in four representative geometries that may be used in radiobiology studies. Methods: MCNP6 was used to model the Dw on the surface of a full scatter phantom in a validated orthovoltage x‐ray reference beam. Dw in a cylindrical mouse, 100 mm Petri dish, 6‐well and 96‐well cell culture dishes was simulated and compared to this full scatter geometry. A reference dose rate was measured using the TG‐61 protocol in a cabinet irradiator. This nominal dose rate was used to irradiate TLDs in each phantom to a given dose. Doses were obtained based on TLDs calibrated in a NIST‐traceable beam. Results: Compared to the full scattering conditions, the simulated dose to water in the representative geometries were found to be underestimated by 12‐26%. The discrepancy was smallest with the cylindrical mouse geometry, which most closely approximates adequate lateral‐ and backscatter. TLDs irradiated in the mouse and petri dish phantoms using the TG‐61 determined dose rate showed similarly lower values of Dw. When corrected for this discrepancy, they agreed with the predicted Dw within 5%. Conclusion: Using the TG‐61 in‐air protocol and given backscatter factors to determine a reference dose rate in a biological irradiator may not be appropriate given the difference in scattering conditions between irradiation and calibration. Without accounting for this, the dose rate is overestimated and is dependent on irradiation geometry.
Multiple Environmental Factors Influence the Importance of the Phosphodiesterase DipA upon Pseudomonas aeruginosa Swarming (2018)

<i>Pseudomonas aeruginosa</i> exhibits flagellum-mediated swimming in liquid and swarming on hydrated surfaces under diverse nutrient conditions. Prior studies have implicated a phosphodiesterase, DipA, in regulating these flagellum-mediated motilities, but collectively, the necessity for DipA was unclear. In this study, we find that the medium composition conditionally constrains the influence of DipA on flagellar motility. We show that DipA exhibits more influence on minimal medium supplemented with glutamate or glucose, where flagellar motility was negated for the <i>dipA</i> mutant. Conversely, a <i>dipA</i>-deficient mutant exhibits flagellar motility when growing with LB Lennox broth and minimal medium supplemented with Casamino Acids. Swarming under these rich medium conditions occurs under elevated levels of c-di-GMP. We also demonstrate that the influence of DipA upon swimming often differs from that upon swarming, and we conclude that a direct comparison of the motility phenotypes is generally valid only when characterizing motility assay results from the same medium composition. Our results are consistent with the explanation that DipA is one of several phosphodiesterases responding to the nutrient environment sensed by <i>P. aeruginosa</i> On minimal medium with glutamate or glucose, DipA is dominant; however, on rich medium, the necessity of DipA is fully negated.<b>IMPORTANCE</b> Motile and ubiquitous bacteria such as <i>Pseudomonas aeruginosa</i> can quickly colonize surfaces and form biofilms in numerous environments such as water distribution systems, soil, and the human lung. To effectively disrupt bacterial colonization, it is imperative to understand how bacteria regulate motility in these different growth environments. Here, we show that the phosphodiesterase DipA is not required for flagellar motility under all nutrient conditions. Thus, the maintenance of intracellular c-di-GMP levels to promote flagellar motility or biofilm development must be conditionally regulated by differing phosphodiesterases in variation with select nutrient cues.
Synthesis of (±)-Meroquinene and Its Epimer via an Allylic Radical Cyclization (1990)

±-Meroquinene (1; cis-3-ethenyl-4-piperideneacetic acid) and its trans epimer 2 were prepared via an allylic radical cyclization of ethyl (2EZ,8Z)-6-benzoyl-10-bromo-6-aza-2,8-decadienoate (15) in good yield.
Biogeography and host‐related factors trump parasite life history: limited congruence among the genetic structures of specific ectoparasitic lice and their rodent hosts (2013)

Abstract Parasites and hosts interact across both micro‐ and macroevolutionary scales where congruence among their phylogeographic and phylogenetic structures may be observed. Within southern A frica, the four‐striped mouse genus, R habdomys , is parasitized by the ectoparasitic sucking louse, P olyplax arvicanthis . Molecular data recently suggested the presence of two cryptic species within P . arvicanthis that are sympatrically distributed across the distributions of four putative R habdomys species. We tested the hypotheses of phylogeographic congruence and cophylogeny among the two parasite lineages and the four host taxa, utilizing mitochondrial and nuclear sequence data. Despite the documented host‐specificity of P . arvicanthis, limited phylogeographic correspondence and nonsignificant cophylogeny was observed. Instead, the parasite–host evolutionary history is characterized by limited codivergence and several duplication, sorting and host‐switching events. Despite the elevated mutational rates found for P. arvicanthis, the spatial genetic structure was not more pronounced in the parasite lineages compared with the hosts. These findings may be partly attributed to larger effective population sizes of the parasite lineages, the vagility and social behaviour of R habdomys , and the lack of host‐specificity observed in areas of host sympatry. Further, the patterns of genetic divergence within parasite and host lineages may also be largely attributed to historical biogeographic changes (expansion‐contraction cycles). It is thus evident that the association between P . arvicanthis and R habdomys has been shaped by the synergistic effects of parasite traits, host‐related factors and biogeography over evolutionary time.
Some Synthetic Phytotoxins Structurally Related to Rhynchosporoside (1980)

The (2-O)alpha-d-glucopyranoside of 1,2-propanediol and [U-(14)C]glucose were used as substrates in a reaction with almond beta-glucosidase, which resulted in the production of some (2-O)alpha-d-oligoglucosides of 1,2-propanediol. As its substrate, the beta-glucosidase preferred the glucoside isomer that rotates plane-polarized light to the right. Some of the glucosides produced in the enzymic reaction mixture possessed host selective toxin activity. It appears that the biological activity of the toxin is not dependent on the nature of the glycosidic linkage with the aglycone.
Prevalence and antimicrobial susceptibilities of bacteria isolated from blood cultures of hospitalized patients in the United States in 2002 (2004)

Ongoing surveillance for antimicrobial susceptibility remains essential, and will enhance efforts to identify resistance and attempt to limit its spread.
The “kickstand rod” technique for correction of coronal imbalance in patients with adult spinal deformity: initial case series (2019)

The kickstand rod technique is safe and effective for the correction of CI in spinal deformity patients. This technique was found to provide marked coronal correction and additional strength to the overall construct without significant adverse consequences.
The Impact Of Interactivity On Involvement And Social Presence: The Moderating Effects Of Opinion Leadership (2012)

The internet is information media and social media for online consumers to seek information on the websites and opinions from other consumers. This study examined how the three dimensions of interactivity (control, direction of communication, and synchronicity) affected the users’ online information seeking process. According to past studies, individual differences such as knowledge of product and motivation of purchase, affect the process of information seeking online. Opinion leaders are often viewed as important targets for successful marketing campaigns, since opinion leaders have greater potential to affect others’ decisions by sharing their abundant knowledge and personal experiences with goods. Therefore, we also investigated how users’ opinion leadership moderates the effects of interactivity. The empirical method of survey is employed to test the proposed hypotheses. A total of 511 respondents were recruited to participate in the survey. The empirical results showed that the control and synchronicity significantly increased consumers’ involvement in the information shown on the websites, whereas communication direction and synchronicity significantly affect on social presence of other people online who provide product related information. Furthermore, users’ opinion leadership moderated the effects of communication direction and synchronicity on social presence. The findings of this study provide online practitioners with useful suggestions applicable to personalization strategies.
Prognostic significances of tumor-infiltrating S-100 positive dendritic cells and lymphocytes in patients with hepatocellular carcinoma. (2004)

Marked infiltration of dendritic cells together with lymphocytes in tumor tissue was closely related to the improved clinical prognosis in patients with hepatocellular carcinoma, and represented as an independent prognostic factor.
The unity of the Corinthian correspondence (2003)

The thesis of this book is that 1 and 2 Corinthians are closely related; that Paul faces the same opponents in both letters; that the letter written with many tears referred to in 2 Corinthians is I Corinthians; and that there is no need to posit an intermediate visit or letter between the two canonical letters. Throughout the two letters Paul implements a consistent pastoral strategy, and an understanding of this strategy explains the difference in tone between various sections of the two letters. There is no need for theories of partition.
Low-Power CMOS Digital Design (2015)

Abstract—Motivated by emerging battery-operated applica-tions that demand intensive computation in portable environ-ments, techniques are investigated which reduce power con-sumption in CMOS digital circuits while maintaining computational throughput. Techniques for low-power opera-tion are shown which use the lowest possible supply voltage coupled with architectural, logic style, circuit, and technology optimization. An architectural-based scaling strategy is pre-sented which indicates that the optimum voltage is much lower than that determined by other scaling considerations. This op-timum is achieved by trading increased silicon area for reduced power consumption. I.
Optimized Uplink Transmission in Multi-Antenna C-RAN With Spatial Compression and Forward (2015)

MIMO and cloud radio access network (C-RAN) are promising techniques for implementing future wireless communication systems, where a large number of antennas are deployed either being co-located at the base station or totally distributed at separate sites called remote radio heads (RRHs), both to achieve enormous spectrum efficiency and energy efficiency gains. Here, we consider a general antenna deployment method for wireless networks, termed multi-antenna C-RAN, where a flexible number of antennas can be equipped at each RRH to more effectively balance the performance and fronthaul complexity tradeoff beyond the conventional massive MIMO and single-antenna C-RAN. To coordinate and control the fronthaul traffic over multi-antenna RRHs, under the uplink communication setup, we propose a new “spatial-compression-and-forward (SCF)” scheme, where each RRH first performs a linear spatial filtering to denoise and maximally compress its received signals from multiple users to a reduced number of dimensions, then conducts uniform scalar quantization over each of the resulting dimensions in parallel, and finally sends the total quantized bits via a finite-rate fronthaul link to the baseband unit (BBU) for joint information decoding. Under this scheme, we maximize the minimum SINR of all users at the BBU by a joint resource allocation over the wireless transmission and fronthaul links. Specifically, each RRH determines its own spatial filtering solution in a distributed manner to reduce the signaling overhead with the BBU, while the BBU jointly optimizes the users' transmit power, the RRHs' fronthaul bits allocation, and the BBU's receive beamforming with fixed spatial filters at individual RRHs. Numerical results show that, given a total number of antennas to be deployed, multi-antenna C-RAN with the proposed SCF and joint optimization significantly outperforms both massive MIMO and single-antenna C-RAN under practical fronthaul capacity constraints.