gebhart/patrepeval huggingface dataset:
A comb-DMRS based CFO estimation scheme for LTE-V systems in high-speed scenario (2017)

Recently, the standardization of the LTE-V system has attracted a significant interest in order to realize V2X communications. In the high-speed V2X scenario, the performance of signal transmission is severely interfered by carrier frequency offset(CFO) due to the Doppler effect. Given that, this paper proposes a Comb-DMRS based joint CFO estimation scheme for LTE-V systems. The proposed scheme jointly exploits the Comb-DMRS and the adjacent DMRS for frequency offset estimation, and improves the estimation precision. Meanwhile, tracking algorithm is used to improve the robustness. We refer to this scheme as joint double pilot (JDP) estimation scheme. The simulation results show that, the scheme proposed in this paper has lower complexity and the best effect comparing with other estimation schemes in different speed environments.
Information technologies need to protect patient confidentiality. (1998)

To meet the needs of an increasing number of persons who require access to patient information, health systems have devoted significant financial resources to developing computerized medical records. As these enterprisewide information systems go online, however the risk of compromising patient confidentiality increases dramatically. State laws regarding patient confidentiality vary considerably, and national standards have not yet been established. Therefore, health systems need to take steps to ensure that their computerized patient records remain secure and confidential to avoid being found in violation of patients' legal right to privacy.
Treating <scp>OSA</scp>: <scp>C</scp>urrent and emerging therapies beyond <scp>CPAP</scp> (2017)

Continuous positive airway pressure (CPAP) is the standard treatment for moderate-to-severe obstructive sleep apnoea (OSA). However, adherence to CPAP is limited and non-CPAP therapies are frequently explored. Oral appliance (OA) therapy is currently widely used for the treatment of snoring, mild, moderate and severe OSA. The most commonly used and studied OA consists of a maxillary and mandibular splint which hold the lower jaw forward during sleep. The efficacy of OA is inferior to CPAP; however, the effectiveness as measured by sleepiness, quality of life, endothelial function and blood pressure is similar likely due to higher acceptance and subjective adherence. Upper airway stimulation augments neural drive by unilaterally stimulating the hypoglossal nerve. The Stimulation Therapy for Apnea Reduction (STAR) study enrolled 126 patients and demonstrated a 68% reduction in OSA severity. A high upfront cost and variable response are the main limitations. Oropharyngeal exercises consist of a set of isometric and isotonic exercises involving the tongue, soft palate and lateral pharyngeal wall. The collective reported trials (n = 120) showed that oropharyngeal exercises can ameliorate OSA and snoring (~30-40%). Nasal EPAP devices consist of disposable one-way resister valve. A systematic review (n = 345) showed that nasal EPAP reduced OSA severity by 53%. The Winx device consists of a mouthpiece placed inside the oral cavity that is connected by tubing to a console that generates negative pressure. Winx may provide successful therapy for ~30-40% of OSA patients. In conclusion, several non-CPAP therapies to treat OSA are currently available.
Synthesis and Properties of CaWO_4 Nanocrystals for X-ray Intensifying Screen by Pechini Sol-gel Process (2008)

CaWO4 nano-crystal phosphor was prepared by a Pechini sol-gel process. X-ray diffraction, scanning electron microscope and photoluminescence spectra were used to characterize the resulting phosphor powders. The results indicate that the phosphor prepared at 750 ℃ is with pure lattice phase,its emitting peak is at 420 nm and mainly consists of globose particles with an average grain size of about 100 nm. Compared with commercial X-ray intensifying screen the images of X-ray film matched with this novel intensifying screen have higher contrast and resolution.
Joint Neural Collaborative Filtering for Recommender Systems (2019)

We propose a J-NCF method for recommender systems. The J-NCF model applies a joint neural network that couples deep feature learning and deep interaction modeling with a rating matrix. Deep feature learning extracts feature representations of users and items with a deep learning architecture based on a user-item rating matrix. Deep interaction modeling captures non-linear user-item interactions with a deep neural network using the feature representations generated by the deep feature learning process as input. J-NCF enables the deep feature learning and deep interaction modeling processes to optimize each other through joint training, which leads to improved recommendation performance. In addition, we design a new loss function for optimization, which takes both implicit and explicit feedback, point-wise and pair-wise loss into account. Experiments on several real-word datasets show significant improvements of J-NCF over state-of-the-art methods, with improvements of up to 8.24% on the MovieLens 100K dataset, 10.81% on the MovieLens 1M dataset, and 10.21% on the Amazon Movies dataset in terms of HR@10. NDCG@10 improvements are 12.42%, 14.24% and 15.06%, respectively. We also conduct experiments to evaluate the scalability and sensitivity of J-NCF. Our experiments show that the J-NCF model has a competitive recommendation performance with inactive users and different degrees of data sparsity when compared to state-of-the-art baselines.
The Trypanosomatid Signal Recognition Particle Consists of Two RNA Molecules, a 7SL RNA Homologue and a Novel tRNA-like Molecule (2003)

Trypanosomatids are ancient eukaryotic parasites affecting humans and livestock. Here we report that the trypanosomatid signal recognition particle (SRP), unlike all other known SRPs in nature, contains, in addition to the 7SL RNA homologue, a short RNA molecule, termed sRNA-85. Using conventional chromatography, we discovered a small RNA molecule of 85 nucleotides co-migrating with the Leptomonas collosoma 7SL RNA. This RNA molecule was isolated, sequenced, and used to clone the corresponding gene. sRNA-85 was identified as a tRNA-like molecule that deviates from the canonical tRNA structure. The co-existence of these RNAs in a single complex was confirmed by affinity selection using an antisense oligonucleotide to sRNA-85. The two RNA molecules exist in a particle of approximately 14 S that binds transiently to ribosomes. Mutations were introduced in sRNA-85 that disrupted its putative potential to interact with 7SL RNA by base pairing; such mutants were unable to bind to 7SL RNA and to ribosomes and were aberrantly distributed within the cell. We postulate that sRNA-85 may functionally replace the truncated Alu domain of 7SL RNA. The discovery of sRNA-85 raises the intriguing possibility that sRNA-85 functional homologues may exist in other lower eukaryotes and eubacteria that lack the Alu domain.
Reconstruction of high-resolution, multi-energy, X-ray computed tomography laboratory mouse images (2002)

A new X-ray computed tomography system is being developed to image laboratory mice for the purpose of phenotype screening and identification. This CT system allows simultaneous capture of several sets of sinogram data, each having a unique X-ray energy distribution, or bin. Due to varying numbers of photon counts within each energy bin, both traditional (filtered backprojection, or FBP) and statistical (maximum likelihood or ML) tomographic image reconstruction techniques have been applied to the energy-dependent sinogram data. Comparisons of reconstructed images using both algorithms on multi-energy (both high- and low-count) sinogram data are presented. Also, tissue contrast within the energy-dependent images is compared to known X-ray attenuation coefficients of soft tissue (e.g. muscle), bone, and fat.
NeuralWarp: Time-Series Similarity with Warping Networks (2018)

Research on time-series similarity measures has emphasized the need for elastic methods which align the indices of pairs of time series and a plethora of non-parametric have been proposed for the task. On the other hand, deep learning approaches are dominant in closely related domains, such as learning image and text sentence similarity. In this paper, we propose \textit{NeuralWarp}, a novel measure that models the alignment of time-series indices in a deep representation space, by modeling a warping function as an upper level neural network between deeply-encoded time series values. Experimental results demonstrate that \textit{NeuralWarp} outperforms both non-parametric and un-warped deep models on a range of diverse real-life datasets.
Relighting in spatial augmented reality (2010)

As an important research field in image based rendering, relighting techniques make it possible to synthesis physically real objects in virtue scenes, which will definitely enhance sense of reality for users and thus improve user experience. On the other hand, as an important branch of augment reality, spatially augmented reality also seeks for user experience enhancement in emersions, which is achieved by aligning projected graphics with real objects. The inner characteristics of the two techniques make the integration of them very promising in enhancing user experience. This paper would discuss the integration of relighting methods in spatial augmented reality; detailed analysis on aligning virtual objects with real objects would be given and the process of relighting would also be introduced. Appealing relighting results and comparisons would be presented too. Finally, the relighting results on table-top spatially augmented reality system with an application on car models in two complex lighting conditions would be demonstrated.
Leigh Syndrome: A Tale of Two Genomes (2021)

Leigh syndrome is a rare, complex, and incurable early onset (typically infant or early childhood) mitochondrial disorder with both phenotypic and genetic heterogeneity. The heterogeneous nature of this disorder, based in part on the complexity of mitochondrial genetics, and the significant interactions between the nuclear and mitochondrial genomes has made it particularly challenging to research and develop therapies. This review article discusses some of the advances that have been made in the field to date. While the prognosis is poor with no current substantial treatment options, multiple studies are underway to understand the etiology, pathogenesis, and pathophysiology of Leigh syndrome. With advances in available research tools leading to a better understanding of the mitochondria in health and disease, there is hope for novel treatment options in the future.
A Systolic Array-Based FPGA Parallel Architecture for the BLAST Algorithm (2012)

A design of systolic array-based Field Programmable Gate Array (FPGA) parallel architecture for Basic Local Alignment Search Tool (BLAST) Algorithm is proposed. BLAST is a heuristic biological sequence alignment algorithm which has been used by bioinformatics experts. In contrast to other designs that detect at most one hit in one-clock-cycle, our design applies a Multiple Hits Detection Module which is a pipelining systolic array to search multiple hits in a single-clock-cycle. Further, we designed a Hits Combination Block which combines overlapping hits from systolic array into one hit. These implementations completed the first and second step of BLAST architecture and achieved significant speedup comparing with previously published architectures.
PP.38.06 (2015)

Objective: To determine measures of adiposity in white coat hypertensive (WCH) Hispanic adolescents. Design and method: M It was conducted a prospective and transversal study in Maracaibo, Venezuela that included 500 adolescents, 237 males and 263 females, selected from high school institutions by a simple random design (mean-age: 15 ± 2 years), who were underwent 24-h ambulatory blood pressure (BP) monitoring to obtain ambulatory BP during 24-hour, awake and asleep periods. The presence of WCH was defined as casual BP higher or equal to 95th percentile and awake and/or asleep BP less than 95th. Adiposity measures were body mass index (BMI), waist to hip ratio (WHR) and waist to height ratio (WHtR). Spearman Correlation was applied to determine the association between adiposity and WCH. ANOVA was applied to study anthropometric measures in WCH adolescents. Results: The prevalence of WCH was 5.2% [n = 26] in all adolescents, 8.0 % [n = 19] in males and 2.7% [n = 7] in females (p: 0.007). a statistically significant association was found between WCH and BMI (R = 0.290, p = 0.0001), WHR (R = 0.211, p = 0.0001) and WHtR (R = 0.290, p = 0.0001). The adolescents with WCH showed statistically significant higher values than normotensive adolescents in BMI [26.6 ± 5 vs. 18.5 ± 2 kg/mt2, p = 0.0001], WHR [0.847 ± 0.07 vs. 0.782 ± 0.05, p = 0.0001] and WHtR [0.512 ± 0.07 vs. 0.411 ± 0.03, p = 0.0001]. Conclusions: The WCH adolescents appear to have abnormal metabolic status which places them in cardiovascular risk at an early age. This study shows that measures of adiposity are strongly associated with high ambulatory blood pressure in adolescents. Therefore, it is important to reduce adiposity in adolescents it is important to reduce adiposity in adolescents to prevent the development of WCH.
Relation between ERS‐1 synthetic aperture radar data and measurements of surface roughness and moisture content of rocky soils in a semiarid rangeland (1998)

Surface roughness and soil moisture content control the distribution of rainfall into runoff, evapotranspiration, and infiltration. Satellite radar data have the potential to provide spatial and multitemporal estimates of these variables, depending upon the sensor configuration and field condition. The relation between the European Remote Sensing Satellite (ERS‐1) synthetic aperture radar (SAR) data and measurements of surface roughness and moisture content of rocky soils in a semiarid rangeland in southeast Arizona was analyzed in this study. A dry and a wet season C band SAR image were acquired and corrected for topographic effects. Field soil roughness and moisture content data were obtained from 47 sampling sites. An intensive soil moisture sampling campaign was also conducted at three sites to determine the number of samples necessary to estimate soil moisture content with 10% accuracy. Dry and wet season SAR data were found to be correlated ( r 2 =0.80 and 0.59, respectively) with root‐mean‐square (RMS) height measurements, while SAR data from the wet season image were poorly correlated with soil moisture. The results indicated that C band SAR data are promising for estimation of surface roughness in semiarid rangelands. However, they are less promising for soil moisture estimation, unless the effects of soil roughness and vegetation are removed. The acquisition of an adequate number of soil moisture samples to obtain representative soil moisture measurements is also a key issue in the validation of soil moisture retrieval from SAR data. In the study area, at least 17 samples per hectare were needed to obtain soil moisture estimates with 10% accuracy.
Stereochemical Studies of Ag‐Catalyzed Hosomi–Sakurai Reaction Using Chiral Silanes (2009)

Stereochemical aspect of asymmetric Ag-catalyzed Hosomi-Sakurai reaction with ketones has been investigated. Several allyltrimethoxysilanes have been synthesized and used for the asymmetric reaction. Remarkably, among several possible diastereomers only two are generated with high levels of diastereo- and enantioselectivities. Based on the observations for different allyltimethoxysilanes, we hypothesize formation of a single allylsilver species which undergoes addition to the ketone.
Internal Control Weakness and Information Quality (2015)

This paper explores the effect of internal control weaknesses (hereafter ICW) and their remediation on information precision for firms who filed Section 404 reports with the SEC. First, we find that the presence of ICW is associated with lower precision of both public and private information. Second, we find that the effect of ICW on public information precision is stronger for firms with firm-level ICW than for those with account-specific ICW. However, we find no such a relation for private information precision. Third, we find that the precision of both private and public information are higher for firms remedying previous weaknesses relative to firms who do not remedy their weaknesses. Further analyses indicate that overall information uncertainty is higher for ICW firms than non-ICW firms. However, we find no difference in consensus among investors between ICW and non-ICW firms. The results suggest that lower precision of public information is offset by lower precision of private information such that consensus among investors is not affected. Finally, we find that firms with different internal control opinions in successive years exhibit changes in precision of public and private information, consistent with our prediction.
<i>IN-VITRO</i> INDUCTION OF MEIOTIC DIVISION IN FOLLICLE-ENCLOSED RAT OOCYTES BY LH, CYCLIC AMP AND PROSTAGLANDIN E2 (1972)

Summary. Isolated Graafian follicles cultured intact were used as a test-system for the meiosis-inducing action of hormonal preparations and for analysing the mediation of this hormone effect. When enlarged follicles were explanted from rats on the day of pro-oestrus before 14.00 hours, i.e. before the preovulatory lh-surge, the oocytes remained in the dictyate state of meiosis throughout an 18-hr culture period. Completion of the first meiotic division could be induced by addition of lh or prostaglandin E2 to the culture medium, or by microinjection of dibutyryl cyclic AMP into the antrum of the cultured follicle. Addition of hcg or fsh to the culture medium was also effective, though possibly due to lh-like activity present in these preparations. Prostaglandin F2α, at 2·8 × 10−5 m, was only partly effective; prolactin, progesterone, 20α-dihydroprogesterone, oestradiol-17β, linolenic acid and adenosine-5′-monophosphate were completely ineffective. The maturation-inducing action of lh was not blocked by cyanoketone, an inhibitor of steroid synthesis. Addition of lh to the culture medium stimulated the formation of cyclic AMP by the isolated follicles. Exogenous cyclic AMP enhanced protein kinase activity in the supernatant fraction of follicular homogenates. It is proposed that the action of lh on oocyte maturation involves the mediation of the adenyl cyclase/cyclic AMP system and possibly of the prostaglandins. An action of steroids could not thus far be implicated. The experimental model described permits study of the mechanism of the meiosis-inducing action of lh under controlled conditions in vitro.
Erythropoietin Down-Regulates Stem Cell Factor Receptor (Kit) Expression in the Leukemic Proerythroblast: Role of Lyn Kinase (2009)

Overexpression of the transcription factor Spi-1/PU.1 by transgenesis in mice induces a maturation arrest at the proerythroblastic stage of differentiation. We have previously isolated a panel of spi-1 transgenic erythroleukemic cell lines that proliferated in the presence of either erythropoietin (Epo) or stem cell factor (SCF). Using these cell lines, we observed that EpoR stimulation by Epo down-regulated expression of the SCF receptor Kit and induced expression of the Src kinase Lyn. Furthermore, enforced expression of Lyn in the cell lines increased cell proliferation in response to Epo, but reduced cell growth in response to SCF in accordance with Lyn ability to down-regulate Kit expression. Together, the data suggest that Epo-R/Lyn signaling pathway is essential for extinction of SCF signaling leading the proerythroblast to strict Epo dependency. These results highlight a new role for Lyn as an effector of EpoR in controlling Kit expression. They suggest that Lyn may play a central role in during erythroid differentiation at the switch between proliferation and maturation.
Frequency probe measurements in processing plasmas (2010)

Summary form only given. Plasma density measurements are an essential tool in understanding and controlling processing plasmas across a wide range of applications. Charge collection probes (Langmuir probes) are of limited utility in depositing plasmas, high pressure applications or in processes that require the use of reactive gases, as these environments result in unreliable data acquisition. Plasma frequency probes are an attractive alternative to Langmuir probes in such applications since they do not suffer performance degradation in these environments. Frequency probes are capable of measuring plasma density over a range of 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">8</sup> to 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">12</sup> cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-3</sup> and, it is possible to extract the plasma potential and electron temperature. This presentation details the use of plasma frequency probes to measure plasma parameters in unique systems operating at higher pressures or in reactive gases (O <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> and SF <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</sub> ). Where possible these measurements are compared with Langmuir probe measurements for identical experimental parameters.
Frequency support characteristics of grid‐interactive power converters based on the synchronous power controller (2016)

Grid‐interactive converters with primary frequency control and inertia emulation have emerged and are promising for future renewable generation plants because of the contribution in power system stabilisation. This study gives a synchronous active power control solution for grid‐interactive converters, as a way to emulate synchronous generators for inerita characteristics and load sharing. As design considerations, the virtual angle stability and transient response are both analysed, and the detailed implementation structure is also given without entailing any difficulty in practice. The analytical and experimental validation of frequency support characteristics differentiates the work from other publications on generator emulation control. The 10 kW simulation and experimental frequency sweep tests on a regenerative source test bed present good performance of the proposed control in showing inertia and droop characteristics, as well as the controllable transient response.
Rotaxanes and catenanes as prototypes of molecular machines and motors (2003)

In the course of the last 20 years, our view on rotaxanes and catenanes has completely changed. Copper(I)-templated strategies, in particular, have allowed us to prepare catenanes on a real preparative scale, in a few chemical steps from commercially available compounds. A particularly significant improvement was the introduction of the recently developed ring-closing metathesis reaction, using Grubbs catalyst. The dynamic properties of rotaxanes and catenanes has been exploited to construct molecular systems for which one component can be set in motion under the action of an external signal, while the other components can be considered as motionless (artificial molecular “machines ”and “motors ”). A particularly representative example is that of a rotaxane dimer, whose overall length can be controlled chemically: A metal exchange reaction (Cu I /Zn II ) triggers a reversible contraction/stretching process of the same molecular assembly, in a way reminiscent of the functioning of biological muscles.