gebhart/patrepeval huggingface dataset:
A Clinical Method for Estimating Laryngeal Airway Resistance during Vowel Production (1981)

A noninvasive clinical method for estimating laryngeal airway resistance during vowel production is described. Resistance is calculated from the ratio of translaryngeal pressure to translaryngeal flow, the first determined from measurement of oral pressure and the second determined from measurement of airway-opening flow made during the production of a specially designed utterance. Application of the method to the study of vowels resulted in a calculated mean laryngeal airway resistance of 35.7 cm H20/LPS for 15 normal adult males. This resistance value is remarkably similar to mean values obtained in previous research using complex invasive experimental methods. Clinical use of the method is illustrated in case studies that highlight both evaluation and management potentials. It is concluded that the method proposed is clinically practical, that the data it provides are both valid and reliable, and that the method shows great promise of becoming a routine clinical tool for estimating laryngeal airway resistance during vowel production.
Feedback Reduction for Multiuser OFDM Systems (2009)

Feedback reduction in multiuser orthogonal frequency-division multiplexing (OFDM) systems has become an important issue due to the excessive amount of feedback required to use opportunistic scheduling, particularly when the number of users and carriers is large. In this paper, we propose a novel feedback-reduction scheme for efficient downlink scheduling. In the proposed scheme, each user determines the amount of feedback based on the so-called <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">feedback efficiency</i> in a distributed manner. The key idea is to give more of an opportunity for feedback to users who are more often scheduled. Simulation results demonstrate that the proposed scheme can substantially decrease the feedback load while achieving almost the same scheduling performance as in the case of full feedback. In addition, the proposed scheme offers unique advantages over existing ones. First, it is not tailored to a specific scheduling policy; thus, it has adaptability to the change of the underlying scheduling policy. Second, the total feedback load can be maintained below a target level, regardless of the number of users in the system.
Estimating the Heading of a Husky Mobile Robot with a LiDAR Compass based on Direction Maps (2014)

Without an absolute position sensor (e.g., GPS), an accurate heading estimate is necessary for proper localization of an autonomous unmanned vehicle or robot. This paper introduces direction maps (DMs), which represent the directions of only dominant surfaces of the vehicle’s environment and can be created with negligible effort. Given an environment with reoccurring surface directions (e.g., walls, buildings, parked cars), lines extracted from laser scans can be matched with a DM to provide an extremely lightweight heading estimate that is shown, through experimentation, to drastically reduce the growth of heading errors. The algorithm was tested using a Husky A200 mobile robot in a warehouse environment over traverses hundreds of metres in length. When a simple a priori DM was provided, the resulting heading estimation showed virtually no error growth.
Targeted afferent renal denervation reduces arterial pressure but not renal inflammation in established DOCA-salt hypertension in the rat (2018)

Recent preclinical studies show renal denervation (RDNx) may be an effective treatment for hypertension; however, the mechanism remains unknown. We have recently reported total RDNx (TRDNx) and afferent-selective RDNx (ARDNx) similarly attenuated the development of deoxycorticosterone acetate (DOCA)-salt hypertension. Whereas TRDNx abolished renal inflammation, ARDNx had a minimal effect despite an identical antihypertensive effect. Although this study established that ARDNx attenuates the development of DOCA-salt hypertension, it is unknown whether this mechanism remains operative once hypertension is established. The current study tested the hypothesis that TRDNx and ARDNx would similarly decrease mean arterial pressure (MAP) in the DOCA-salt hypertensive rat, and only TRDNx would mitigate renal inflammation. After 21 days of DOCA-salt treatment, male Sprague-Dawley rats underwent TRDNx ( n = 16), ARDNx ( n = 16), or Sham ( n = 14) treatment and were monitored for 14 days. Compared with baseline, TRDNx and ARDNx decreased MAP similarly (TRDNx -14 ± 4 and ARDNx -15 ± 6 mmHg). After analysis of diurnal rhythm, rhythm-adjusted mean and amplitude of night/day cycle were also reduced in TRDNx and ARDNx groups compared with Sham. Notably, no change in renal inflammation, injury, or function was detected with either treatment. We conclude from these findings that: 1) RDNx mitigates established DOCA-salt hypertension; 2) the MAP responses to RDNx are primarily mediated by ablation of afferent renal nerves; and 3) renal nerves do not contribute to the maintenance of renal inflammation in DOCA-salt hypertension.
Analysis and Design of a Single-Phase Half-Bridge Rectifier/Inverter with an Active Resonant DC Bus Voltage Balancer (2021)

This paper presents the analysis and design of the single-phase half bridge rectifier with an active voltage DC bus balancer (ARVB). Impact of the power ripple on the DC bus of the ordinary rectifier/inverter and the rectifier/inverter with the ARVB is examined. It will be shown that with the ARVB, the volume and size of the DC bus; hence the converter can be significantly reduced, since the ARVB eliminates fundamental and the most significant component of the DC bus current.
An Interdisciplinary Analysis of Servitization and Active Aging in Taiwan's Senior Care Market: A Case Study of Fitness Equipment Industry (2013)

As advanced medical science, affluent life and the improvement of public health environment, human mean lifetime is extended. The population structure gets older year by year is a facing problem to every countries in the world. On the one way, it's an urgent policy issue need to consider seriously, and on the other way, it also show enormous potential business opportunities of Evergreen care market. Manufacturing servitization is an extension of industrial value chain, its main goals is to create more value to the business model. Through manufacturing servitization, enterprises response to market demand changes with modifying value chain, and even enter a new market which is service-oriented. In this study, the methods of case studies and Service project experience will be applied to investigate deeply both fitness equipment manufacturers and seniors lifestyle and care needs, and to find out how fitness equipment manufacturers could provide service product. Then combining with the WHO (2002) proposed the concept of active aging to develop innovative business model for fitness equipment industries. The results will not only help enterprises to catch the business opportunities of evergreen care market in the future, but can help relative government authorities to draw up future policies for how to support the manufacturing industries reforming and how to provide a integrated, innovative thinking in accordance to the social problem of aging.
A Course for Ground Engineers (1930)

AIRCRAFT INSTRUMENTS THE instruments used in aircraft are of a highly specialised nature. They have to stand up to very severe conditions in service. They are subjected to continual vibration during the whole time the engine is running, and to severe shocks in landing and when taxying on the ground. They are expected to function no matter what the position of the aircraft, and to stand reduced air pressures due to altitude, as well as a range of temperature altogether unusual in the case of instruments used for any other purpose. It is well to emphasise these peculiar conditions as they are not always fully appreciated.
Characterization of Biomass using Hyperspectral Imaging Techniques (2010)

Production of sustainable and affordable energy is a major challenge that faces economies worldwide. Increasing the proportion of renewable energies, such as biomass, within our energy supply plays an important role in decreasing greenhouse gasses in the atmosphere. However energy crops and agricultural crop residues are inherently heterogeneous which stresses the need for rapid characterization methods. Development of sensors to predict biomass quality in real time will facilitate optimization of biomass-to-energy conversion processes.
An updated 37-element low-order solar adaptive optics system for 1-m new vacuum solar telescope at Full-Shine Lake Solar Observatory (2012)

A low-order solar adaptive optics (AO) system, which consists of a fine tracking loop with a tip/tilt mirror and a correlation tracker, and a high-order correction loop with a 37-element deformable mirror, a correlating Shack-Hartmann wavefront sensor and a high-order wavefront correction controller, had been successfully developed and installed at 1-m New Vacuum Solar Telescope of Full-shine Lake (also called Fuxian Lake) Solar Observatory. This system is an update of the 37-element solar AO system designed for the 26-cm Solar Fine Structure Telescope at Yunnan Astronomical Observatory in 2009. The arrangement of subapertures of the Shack-Hartmann wavefront sensor was changed from square to hexagon to achieve better compensation performance. Moreover, the imaging channel of the updated system was designed to observe the Sun at 710nm and 1555nm simultaneously. The AO system was integrated into the solar telescope in 2011, and AO-corrected high resolution sunspots and granulation images were obtained. The observational results show that the contrast and resolution of the solar images are improved evidently after the correction by the AO system.
Application of Passive Radiative Cooling for Dew Condensation (2006)

Dew water was collected from several passive foil-based radiative condensers established in a variety of geographic settings: continental (Grenoble, in an alpine valley, and Brive-la-Gaillarde, in the Central Massif volcanic area, both in France), French Atlantic coast (Bordeaux), eastern Mediterranean (Jerusalem, Israel), and the island of Corsica (Ajaccio, France) in the Mediterranean Sea. In Ajaccio two large 30m2 condensers have been operating since 2000. Additional semi-quantitative dew measurements were also carried out for Komiža, island of Vis (Croatia) in the Adriatic Sea, and in Mediterranean Zadar and Dubrovnik (both in Croatia). Dew potential was calculated for the Pacific Ocean island of Tahiti (French Polynesia). The data show that significant amounts of dew water can be collected. Selected chemical and biological analyses established that dew is, in general, potable. Continued research is required for new and inexpensive materials that can enhance dew condensation.
Snapshot High Dynamic Range Imaging via Sparse Representations and Feature Learning (2019)

Bracketed High Dynamic Range (HDR) imaging architectures acquire a sequence of Low Dynamic Range (LDR) images in order to either produce a HDR image or an “optimally” exposed LDR image, achieving impressive results under static camera and scene conditions. However, in real world conditions, ghost-like artifacts and noise effects limit the quality of HDR reconstruction. We address these limitations by introducing a post-acquisition snapshot HDR enhancement scheme that generates a bracketed sequence from a small set of LDR images, and in the extreme case, directly from a single exposure. We achieve this goal via a sparse-based approach where transformations between differently exposed images are encoded through a dictionary learning process, while we learn appropriate features by employing a stacked sparse autoencoder (SSAE) based framework. Via experiments with real images, we demonstrate the improved performance of our method over the state-of-the-art, while our single-shot based HDR formulation provides a novel paradigm for the enhancement of LDR imaging and video sequences.
Neutrophil recruitment and leukocyte response following focused ultrasound and microbubble mediated blood-brain barrier treatments (2020)

<b>Rationale:</b> Delivery of therapeutic agents to the brain is limited by the presence of the blood-brain barrier (BBB). An emerging strategy to temporarily and locally increase the permeability of the BBB is the use of transcranial focused ultrasound (FUS) and systematically injected microbubbles (MBs). FUS+MB BBB treatments cause an acute inflammatory response, marked by a transient upregulation of pro-inflammatory genes; however, the cellular immune response remains unknown. <b>Methods:</b> FUS+MB BBB treatments were monitored in real-time using two-photon fluorescence microscopy and transgenic EGFP Wistar rats, which harbour several fluorescent cell types. Leukocyte identification and counts were confirmed using magnetic resonance imaging-guided FUS+MB BBB treatments. Participation of leukocytes in reducing β-amyloid pathology following repeated FUS+MB BBB treatments was investigated in the TgCRND8 mouse model of Alzheimer's disease. <b>Results:</b> Intravascular leukocyte activity indicative of acute inflammation were identified, including transendothelial migration, formation of cell aggregates, and cell masses capable of perturbing blood flow. Leukocyte responses were only observed after the onset of sonication. Neutrophils were identified to be a key participating leukocyte. Significantly more neutrophils were detected in the sonicated hemisphere compared to the contralateral hemisphere, and to untreated controls. Three to five biweekly FUS+MB BBB treatments did not induce significantly more neutrophil recruitment, nor neutrophil phagocytosis of β-amyloid plaques, in TgCRND8 mice compared to untreated controls. <b>Conclusions:</b> This study provides evidence that the cellular aspect of the peripheral immune response triggered by FUS+MB BBB treatments begins immediately after sonication, and emphasizes the importance for further investigations to be conducted to understand leukocyte dynamics and cerebral blood flow responses to FUS+MB BBB treatments.
Performance on the PD test battery by relatives of patients with progressive supranuclear palsy (2001)

The proportion of FDR who demonstrated abnormal performance on the PD Battery was greater than NC individuals. Thus, the PD Battery may detect the asymptomatic carrier state or risk for PSP or a subclinical effect of a shared environmental exposure.
Direct Observation of the Optical Plasma Resonance of Ag by Photon-Assisted Tunneling (1976)

Photon-assisted tunneling is proposed for the investigation of optical plasma resonances; this is demonstrated by the direct observation of the Ag resonance in appropriate Ag-${\mathrm{Al}}_{2}$${\mathrm{O}}_{3}$-Al structures. A spectral scan of the ratio of the signals photoinduced by the $p$ and $s$ polarizations shows a large enhancement corresponding to the plasma resonance of Ag.
Visual equivalence (2007)

Efficient, realistic rendering of complex scenes is one of the grand challenges in computer graphics. Perceptually based rendering addresses this challenge by taking advantage of the limits of human vision. However, existing methods, based on predicting visible image differences, are too conservative because some kinds of image differences do not matter to human observers. In this paper, we introduce the concept of visual equivalence , a new standard for image fidelity in graphics. Images are visually equivalent if they convey the same impressions of scene appearance, even if they are visibly different. To understand this phenomenon, we conduct a series of experiments that explore how object geometry, material, and illumination interact to provide information about appearance, and we characterize how two kinds of transformations on illumination maps (blurring and warping) affect these appearance attributes. We then derive visual equivalence predictors (VEPs): metrics for predicting when images rendered with transformed illumination maps will be visually equivalent to images rendered with reference maps. We also run a confirmatory study to validate the effectiveness of these VEPs for general scenes. Finally, we show how VEPs can be used to improve the efficiency of two rendering algorithms: Light-cuts and precomputed radiance transfer. This work represents some promising first steps towards developing perceptual metrics based on higher order aspects of visual coding.
A novel thick-film piezoelectric micro-generator (2001)

The use of alternative electrical energy sources to batteries is of particular significance to remote sensor systems. A vibration-powered micro-generator, based on a screen printed piezoelectric material, is proposed for this purpose. Theoretical and experimental results show that 2 W can be generated for a vibration frequency of only 80 Hz. The device is not optimized and significant improvements are envisaged in the future.
Brain MRI Lesions are Related to Bowel Incontinence in Multiple Sclerosis (2018)

Our analysis indicates associations between bowel incontinence and lesions in the left supramarginal gyral area contributing to integrating anorectal-visceral sensation and in the right parahippocampal gyrus and amygdala contributing to generating visceral autonomic arousal states. Moreover, our results suggest left hemispheric dominance of sensory visceral integration, while limbic areas of the right hemisphere seem to contribute to the autonomic component of the defecation process. A limitation of our study is the retrospective evaluation of the bowel incontinence status based on medical records. Further research should evaluate the bowel incontinence status in multiple sclerosis patients prospectively to overcome the limitations of the current study.
Marital problems, maternal gatekeeping attitudes, and father–child relationships in adolescence. (2013)

We evaluated maternal gatekeeping attitudes as a mediator of the relation between marital problems and father-child relationships in 3 waves when children were in Grades 7-10. We assessed each parent's contribution to the marital problems experienced by the couple. Findings from mediational and cross-lagged structural equation models revealed that increased marital problem behaviors on the part of mothers at Wave 1 predicted increased maternal gatekeeping attitudes at Wave 2, which in turn predicted decreased amounts of father-adolescent interaction at Wave 3. Decreased amounts of interaction with either parent were associated within each wave with adolescents' perceptions that they mattered less to that parent. Amount of interaction with fathers at Wave 2 positively predicted changes in boys' perceptions of how much they mattered to their fathers at Wave 3, and amount of interaction with mothers at Wave 2 positively predicted changes in girls' perceptions of how much they mattered to their mothers at Wave 3. The findings did not differ for European American versus Mexican American families or for biological fathers versus step-fathers.
Sparse GPU Voxelization of Yarn‐Level Cloth (2015)

Abstract Most popular methods in cloth rendering rely on volumetric data in order to model complex optical phenomena such as sub‐surface scattering. These approaches are able to produce very realistic illumination results, but their volumetric representations are costly to compute and render, forfeiting any interactive feedback. In this paper, we introduce a method based on the Graphics Processing Unit (GPU) for voxelization and visualization, suitable for both interactive and offline rendering. Recent features in the OpenGL model, like the ability to dynamically address arbitrary buffers and allocate bindless textures, are combined into our pipeline to interactively voxelize millions of polygons into a set of large three‐dimensional (3D) textures (&gt;10 9 elements), generating a volume with sub‐voxel accuracy, which is suitable even for high‐density woven cloth such as linen.
Energy Aware Optimal Resource Allocation in Backhaul Constraint Wireless Networks: A Two Base Stations Scenario (2015)

In future wireless communication systems, the capacity constrained backhaul gradually becomes bottleneck both in spectrum efficiency and energy efficiency, especially in joint processing of LTE-Advanced. This paper addresses the issue of energy aware resource allocation with limited backhaul capacity in uplink cooperative reception, where two base stations (BSs) equipped with single-antenna each serving multiple users with single-antenna via multicarrier are considered. We propose a novel energy efficient cooperative scheme based on compress-and-forward and user pairing to solve the problem in two base stations scenario. In order to maximize system throughput and increase energy efficiency under the limited backhaul capacity constraint, we formulate the joint optimization problem of user pairing, subcarrier mapping, and backhaul capacity sharing between different pairs (subcarriers). An energy efficient algorithm based on alternating optimization strategy and perfect mapping is proposed to solve this mixed integer programming problem. Simulations show that this allocation algorithm can improve the system capacity and energy efficiency significantly compared with the blind alternatives.
Quantitative comparison between type Ia supernova spectra at low and high redshifts: a case study (2007)

We develop a method to measure the strength of the absorption features in type Ia supernova (SN Ia) spectra and use it to make a quantitative comparisons between the spectra of type Ia supernovae at low and high redshifts. In this case study, we apply the method to 12 high-redshift (0.212 ≤ z ≤ 0.912) SNe Ia observed by the Supernova Cosmology Project. Through measurements of the strengths of these features and of the blueshift of the absorption minimum in Ca ii H&K, we show that the spectra of the high-redshift SNe Ia are quantitatively similar to spectra of nearby SNe Ia (z < 0.15). One supernova in our high redshift sample, SN 2002fd at z = 0.279, is found to have spectral characteristics that are associated with peculiar SN 1991T/SN 1999aa-like supernovae.
Coating Mass Dependence of Soot Aggregate Restructuring due to Coatings of Oleic Acid and Dioctyl Sebacate (2012)

Soot particles in the atmosphere can be coated with organic or nonorganic material, which may affect particle morphology and optical properties. The effect of the mass of coating on the morphology of soot particles was studied using oleic acid and dioctyl sebacate (DOS) coatings. A wide range of coatings were used, with up to 10 times as much coating as the mass of the soot. It is shown that as the coating mass increases the degree of collapsing increases until the coating is so large that the soot particle becomes completely contained within a spherical droplet of the coating material. Higher amounts of coating will not cause further collapse of the particle. The degree of collapse is also a function of the initial size of the soot particle but was independent of the coating materials tested, which have similar surface tensions. A model is presented to predict the change in mobility diameter as a function of coating mass ratio. The effect of coating mass on effective density, shape factor, and fractal dimension is also reported. Copyright 2013 American Association for Aerosol Research