gebhart/patrepeval huggingface dataset:
A study on highly effective IVC system using TV White Space (2015)

In this paper, we propose a new communication system for Intelligent Transport Systems (ITS). The concern with an efficient use of the TV White Space (TVWS) has been growing. We investigate the communication system by using the TVWS in order to improve the spectral efficiency for ITS. By using the TVWS, it is possible to obtain an decentralized effect owing to the division of simultaneous stations into the channels. By computer simulations, we show that the proposed system with double bandwidth can provide more than double performance.
Shear thickening and order–disorder effects in concentrated colloids at high shear rates (2000)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Alan A. Catherall, John R. Melrose, Robin C. Ball; Shear thickening and order–disorder effects in concentrated colloids at high shear rates. J. Rheol. 1 January 2000; 44 (1): 1–25. https://doi.org/10.1122/1.551072 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentThe Society of RheologyJournal of Rheology Search Advanced Search |Citation Search
Effects of cytochalasin D and methylamine on intracellular growth of Legionella pneumophila in amoebae and human monocyte-like cells (1991)

A cloned and axenically cultured strain of Hartmannella vermiformis was used as a model to study intracellular multiplication of Legionella pneumophila in amoebae. The growth of L. pneumophilia in both H. vermiformis and a human monocyte-like cell line (U937) was investigated with cytoskeletal and metabolic inhibitors. L. pneumophila replicated only intracellularly in these cellular models, and electron microscopy showed ultrastructural similarities in the initial phase of multiplication. Treatment of amoebae with an inhibitor of microfilament-dependent phagocytosis (cytochalasin D, 0.5 or 1.0 micrograms/ml) did not inhibit intracellular growth of L. pneumophila; however, intracellular multiplication was inhibited by treatment of U937 monocytes with the same concentrations of cytochalasin D. Methylamine (10 to 100 mM), an inhibitor of adsorptive pinocytosis, inhibited the replication of L. pneumophila in amoebae in a dose-dependent manner. All doses of methylamine tested (10 to 50 mM) inhibited growth of L. pneumophila in U937 monocytes. Cytochalasin D and methylamine had no effect on the multiplication of L. pneumophila in culture medium or on the viability of amoebae or U937 monocytes. Intracellular replication of L. pneumophila in H. vermiformis may be accomplished by a cytochalasin D-independent mechanism, such as adsorptive pinocytosis. In contrast, both cytochalasin D- and methylamine-sensitive mechanisms may be essential for the intracellular multiplication of L. pneumophila in U937 monocytes.
Relaunching Bell Labs (1996)

AT&T's fabled research shop has a new parent called Lucent Technologies, a new boss, and promises that the job cuts that have plagued the physical sciences division are over. Many researchers had been bemoaning the demise of the labs, whose researchers count the development of the transistor, laser, and solar cell among a remarkable stream of breakthroughs that have garnered seven Nobel Prizes during the last 70 years. Yet despite encouraging news from the top, some staff are still sending out résumés.
A Navigation System Using Distance and Direction Measurements from a Satellite (1964)

the designer of a navigation satellite system faces choices in his method of approach. Westinghouse carefully examined the alternatives in a study performed for the National Aeronautics and Space Administration and selected a system which is based on using distance and direction measurements from a single satellite. The reasons back of the decisions are reviewed and the preferred system is described.
G-Neutrosophic Space (2014)

The Concept of a G-space came into being as a consequence of Group action on an ordinary set. Over the history of Mathematics and Algebra, theory of group action has emerged and proven to be an applicable and effective framework for the study of different kinds of structures to make connection among them.
47.3: Highly Efficient Fluorescent Deep Blue Dopant for “Super Top Emission” Device (2008)

Abstract We successfully synthesized a new excellent fluorescent deep blue dopant BD‐4. The bottom emission device with BD‐4 has a good color coordinate in CIE 1931 chromaticity of (0.140, 0.133) with high current efficiency of 6.46cd/A. BD‐4 gives us better performance with current efficiency of 3.9cd/A with CIE chromaticity of (0.133,0.065) with the optimization for our “Super Top Emission” device structure. The internal quantum efficiency of this device is 28.5% which is beyond across the theoretical limit.
Study of Cooling Drag Reduction Method by Controlling Cooling Flow (2014)

<div class="section abstract"><div class="htmlview paragraph">As the demand for improved fuel economy increases and new CO2 regulations have been issued, aerodynamic drag reduction has become more critical. One of the important factors to consider is cooling drag. One way to reduce cooling drag is to decrease the air flow volume through the front grille, but this has an undesirable impact on cooling performance as well as component heat load in the under-hood area. For this reason, cooling drag reduction methods while keeping reliability, cooling performance and component heat management were investigated in this study.</div><div class="htmlview paragraph">At first, air flow volume reduction at high speed was studied, where aerodynamic drag has the greatest influence. For vehicles sold in the USA, cooling specification tends to be determined based on low speed, while towing or driving up mountain roads, and therefore, there may be extra cooling capacity under high speed conditions.</div><div class="htmlview paragraph">In order to decrease airflow volume by front grille opening area reduction, radiator efficiency improvement was investigated. Efficiency improvement enables a decrease in air flow volume without a corresponding reduction in cooling performance. It is known that high airflow velocity distribution on the radiator face causes a reduction in overall heat rejection performance. Methods to reduce this variability of face velocity distribution were studied in order to improve radiator heat rejection efficiency, and through these methods, total airflow volume through the radiator could then be decreased without adverse effects to cooling performance.</div><div class="htmlview paragraph">This airflow volume reduction, although acceptable for cooling performance, creates a problem for component heat load management. Component heat load is represented as a total number of hours spent at a representative temperature. Airflow control was designed in order to balance the combined low and high speed component heat load.</div><div class="htmlview paragraph">Several methods were investigated, including external body flow modification, cooling fan control logic, and fan shroud shape change. Cooling drag reduction was then estimated based on this cooling airflow volume change.</div></div>
Are the Keys loved to death? A study of diver specialization levels and preferences in the Florida Keys (2010)

This paper presents research conducted for the Florida Reef Resilience Program on nonresident recreational SCUBA divers in three zones of the Florida Keys. When divers were segmented into specialization subgroups for analysis, divers in different subgroups tended to use different geographic locations. These results suggest differences in user preferences; yet when social norms such as perceived crowding were included in the analysis, there were no significant differences across specialization levels. Nonresident divers may be motivated by nonsocial drivers, which has important implications for recreation management decisions and strategies that are based on social carrying capacity. Results also suggest that nonsocial factors such as resource conditions may have an important influence on selection of dive locations and satisfaction with the diving experience.
Elevated alpha–tumor necrosis factor levels in spinal fluid from HIV‐1–infected patients with central nervous system involvement (1991)

To assess the role of alpha-tumor necrosis factor in the pathogenesis of central nervous system involvement during human immunodeficiency virus type 1 infection, we recorded clinical data and measured alpha-tumor necrosis factor levels in serum and cerebrospinal fluid samples from 45 patients infected with human immunodeficiency virus type 1, classified as group II/III (10), group IV A (5), group IV B (10), and group IV C-1 (20) of the Centers for Disease Control acquired immunodeficiency syndrome classification system and 42 controls. Alpha-tumor necrosis factor was above the limit of detection in only 3 of 15 sera and 3 of 15 cerebrospinal fluid samples from patients in group II/III and group IV A, whereas it was detected in 17 of 30 sera (p less than 0.05) and 22 of 30 cerebrospinal fluid (p less than 0.0002) samples from clinically more advanced patients (group IV B and group IV C-1). Alpha-tumor necrosis factor mean values were 21.5 pg/ml in sera and 50.0 pg/ml in cerebrospinal fluid from group IV B patients and 30.4 pg/ml in sera and 24 pg/ml in cerebrospinal fluid from group IV C-1 patients.(ABSTRACT TRUNCATED AT 250 WORDS)
Studies on heme binding in myoglobin, hemoglobin, and cytochrome <i>c</i> by ion spray mass spectrometry (1993)

The ion spray mass spectra of three representative heme-containing proteins were studied, with an emphasis on results obtained under neutral (pH 7) aqueous conditions. The noncovalently bound heme in myoglobin and hemoglobin may be readily distinguished from the covalently bound heme prosthetic group attached to cytochrome c by using collisioninduced dissociation in the free-jet expansion region of the mass spectrometer as well as in the collision quadrupole with premass selection. The charge state of iron in the expelled heme from myoglobin and hemoglobin appears to be 3+ but 2f for heme expelled from cytochrome c.
Lumenal pH and Transit Time in Patients with Quiescent Ulcerative Colitis (UC) Resembles that of Healthy Controls (2009)

Purpose: In UC, some patients fail to achieve remission with standard outpatient therapy. Lumenal transit time and pH have been implicated as potential explanations for variable therapeutic response. While there is limited information about variations in gut pH in health and disease, studies in healthy volunteers have demonstrated that the mean ileal pH is 7.45 (range 7.3-7.6), and that the mean proximal and distal colon pH is 6.14 (5.7-6.8) and 6.87 (6.1-7.2), respectively.1 We previously described the lumenal pH in 10 patients with mildly to moderately active UC, and found that the pH in the distal small bowel and proximal and distal colon was more acidic than seen in healthy volunteers.2 In order to better understand variations in these measurements associated with the activity of disease, we measured gut pH in UC patients in clinical remission. Methods: Patients with an established diagnosis of UC by clinical, endoscopic and histologic means who were in clinical remission according to the ACG Practice Guidelines3 were recruited. When available, confirmation of mucosal and histologic healing was reviewed. We used the Smartpill pH to measure total gut pH, pressure, and temperature in these patients using a previously described standard protocol, which included prohibition of acid blocking medications and a standardized diet. Gut transit was calculated based on standard changes in pressure and pH associated with known locations in the bowel. Simple summative statistics were performed. Results: Eight patients in clinical remission (6 of whom also had confirmation of mucosal healing) completed the study (5 male, median disease duration 12.5 y, range 8-31 y). Four patients had extensive or pancolitis and 4 had left-sided colitis. Mean pH values in different portions of the GI tract for each patient are listed in the Table. The mean pHs calculated for the proximal and distal colons of all patients were 6.36 and 7.21, respectively. Patients with left-sided colitis had a combined small and large bowel transit time of mean 1835 minutes (SD 1378.9 m) while patients with a history of extensive colitis had a mean small/large bowel transit time of 1377 minutes (SD 671.8 m). There were no significant differences in pH or transit time based on extent of disease. See Table.Table: pH values by location in GI tract using SmartPillConclusion: Colonic pH in UC patients in clinical remission appears similar to that of previously reported values in healthy volunteers. The apparent rise in pH compared to our observations in active UC may have important implications for effective delivery of therapy.
Recovery from liver disease in a Niemann-Pick type C mouse model (2010)

Loss of function of Niemann-Pick C1 (NPC1) leads to lysosomal free cholesterol storage, resulting in the neurodegenerative disease Niemann-Pick disease type C (NPC). Significant numbers of patients with NPC also suffer from liver disease. Currently, no treatments exist that alter patient outcome, and it is unknown if recovery from tissue damage can occur even if a treatment were found. Our laboratory developed a strategy to test whether mice can recover from NPC liver disease. We used antisense oligonucleotides to knock down hepatic expression of NPC1 in BALB/C mice for either 9 or 15 weeks. This recapitulated liver disease with hepatomegaly, cell death, and fibrosis. Then, antisense oligonucleotide treatment was halted for an additional 4, 9, or 15 weeks. We report that significant liver recovery occurred even when NPC1 protein expression only partially returned to normal. Several pathological phenotypes were alleviated, including hepatomegaly, cholesterol storage, and liver cell death. Histological examination revealed that foamy cell accumulation was relieved; however, liver fibrosis increased. Additionally, resolution of cholesterol storage and liver cell death took longer in mice with long-term knockdown. Finally, we found that transcription of cholesterol homeostatic genes was significantly disrupted during the recovery phase after long-term knockdown.
An intelligent radio resource management scheme for multi-layered cellular system with different assigned bandwidths under nonuniform traffic conditions (2002)

This paper proposes an intelligent and autonomous radio resource management technique for multi-layered cellular systems with different bandwidths not only to reduce the complexity of the centralized algorithms but also to cope with spatially nonuniform traffic conditions. In the proposed system, wider bandwidth is assigned to the microcell system to support higher bit rate transmission than the macrocell system, and radio spectrum is adaptively and autonomously shared by both cellular systems using a channel partitioning technique to minimize total blocking rate.
VISA (1998)

In this paper we describe the implementation of VISA, our Virtual Internet SCSI Adapter. VISA was built to evaluate the performance impact on the host operating system of using IP to communicate with peripherals, especially storage devices. We have built and benchmarked file systems on VISA-attached emulated disk drives using UDP/IP. By using IP, we expect to take advantage of its scaling characteristics and support for heterogeneous media to build large, long-lived systems. Detailed file system and network CPU utilization and performance data indicate that it is possible for UDP/IP to reach more than 80% of SCSI's maximum throughput without the use of network coprocessors. We conclude that IP is a viable alternative to special-purpose storage network protocols, and presents numerous advantages.
Student Achievement through Early Truancy Reduction (2006)

Truancy is a concern for all grade levels of all schools. According to Capps (2003) the average student misses thirteen days of school each year. Many students entering middle school have already accumulated 180 days of questionable absences, the equivalent of a full year of school. Studies of school dropouts show students begin distancing themselves from school at an early age. These students are absent more often than other students as early as the first grade (Epstein & Sheldon, 2002). There is a pattern of increasing absenteeism throughout a student’s entire school career. It is not too early to begin looking for those patterns in elementary and middle school. The Georgia Department of Education (2003) (GDOE) defines a truant student as “any child subject to compulsory attendance who during the school calendar year has more than five days of unexcused absences” (p. 1). The GDOE Policy Division (2003) reported one third of the state’s middle and high school students were absent 10 or more days in 2002. It also reported approximately 10% of Georgia’s student population is absent 20 or more days per year and 74,000 students are absent on a daily basis.
Effect of Awn Suppression on Grain Yield and Agronomic Traits in Hard Red Winter Wheat (1994)

Producers in the southern Great Plains who utilize wheat for grain, hay, or late‐season grazing would benefit from awnless hard red winter (HRW) wheat cultivars if yield potential is maintained relative to awned cultivars. The influence of awn suppression in contemporary cultivars in the southern Great Plains is unknown. Our objective was to determine the genetic effect of awn suppression on grain yield and agronomic traits measured in several HRW backgrounds and Oklahoma production environments. Experimental materials were derived by two methods from the same source populations: ‘TAM 107’*2/‘McNair 1003’, ‘Mustang’*2/McNair 1003, and ‘Century’*2/ McNair 1003. Bulk populations of lines were derived randomly from either homozygous awned or awnletted (spikes with one to three tip awns) F 2 plants in each cross. The six bulk populations were evaluated in 11 environments. In a separate experiment, 78 pairs of awned and awnletted F 3 ‐derived sib lines (26 pairs per cross) were evaluated in four environments. No differences in grain yield were detected between awned and awnletted bulk populations from Mustang or Century, but a significant decrease in yield was found for the awnletted TAM 107 population. Significant decreases in test weight were associated with the awnletted character in all backgrounds. The Century‐awnletted population had longer spikes, greater spike harvest index, and more kernels per spike than the Century‐awned bulk. In 69% of the sib‐pair comparisons, the awnletted sib did not differ significantly from the awned sib in grain yield. Where significant differences occurred, the awned sib was always higher yielding. It may be possible to develop awnletted lines with acceptable yield performance in the Great Plains, but close attention must be given to test weight to maintain current expectations of awned cultivars.
<i>In vivo</i> detection of GABA in human brain using a localized double‐quantum filter technique (1997)

A proton MR spectral editing technique employing a spatially localized, double-quantum filter (DQF) was used to measure gamma-aminobutyric acid (GABA) in the human brain at 1.5 T. The double-quantum method provided robust, single-shot suppression of uncoupled resonances from choline, creatine, and NAA and allowed detection of the gamma CH2 GABA (3.0 ppm) resonance with 30% efficiency. Spatial localization of the GABA measurement was achieved by incorporating PRESS localization within the double-quantum excitation and detection sequence. A calibration technique was developed to adjust the relative phases of the RF pulses to maximize the in vivo double-quantum detection efficiency for an arbitrary voxel location. The sequence efficiency, degree of suppression of uncoupled reasonances, and characterization of the in vivo DQF technique was examined in phantom experiments and in a study of the occipital lobe of 10 normal subjects. The ratio of the 3.0-ppm GABA resonance to the 3.0-ppm creatine resonance was found to be 0.20 +/- 0.05 (SD).
Granulosa Cell Production of Anti-Müllerian Hormone Is Increased in Polycystic Ovaries (2006)

The reduction of AMH in follicles greater than 9 mm from normal ovaries appears to be an important requirement for the selection of the dominant follicle. AMH production per GC was 75 times higher in anovPCOs, compared with normal ovaries. This increase in AMH may contribute to failure of follicle growth and ovulation seen in polycystic ovary syndrome.
The transistor regenerative amplifier as a computer element (1954)

A method of designing transistor 2-state circuits which accepts transistors having a relatively large spread in characteristics has already been described. Although subsequent improvement in the uniformity of transistors has removed the primary object of the system, it has been retained in the circuits described in the paper because of the many other advantages it confers where accuracy and speed of operation are important.The transistor is considered as a regenerative amplifier, and the first part of the paper describes various methods of connection and endeavours to evaluate the merits of each circuit. The second part illustrates the application of some of the basic circuits to more complex circuits of the type used in digital computers. These circuits operate at a basic frequency of 125 kc/s and use rectangular pulses to allow adequate time for comparing two or more waveforms and performing operations on them.It is concluded that, owing to its adequate stage gain, low output impedance and standard output pulse, the transistor regenerative amplifier constitutes an economical and versatile computer element.
Extending the DARPA off-line intrusion detection evaluations (2002)

The 1998 and 1999 DARPA off-line intrusion detection evaluations assessed the performance of intrusion detection systems using realistic background traffic and many examples of realistic attacks. This paper discusses three extensions to these evaluations. First, the Lincoln Adaptable Real-time Information Assurance Testbed (LARIAT) has been developed to simplify intrusion detection development and evaluation. LARIAT allows researchers and operational users to rapidly configure and run real-time intrusion detection and correlation tests with robust background traffic and attacks in their laboratories. Second, "Scenario Datasets" have been crafted to provide examples of multiple component attack scenarios instead of the atomic attacks as found in past evaluations. Third, extensive analysis of the 1999 evaluation data and results has provided understanding of many attacks, their manifestations, and the features used to detect them. This analysis is used to develop models of attacks, intrusion detection systems, and intrusion detection system alerts. Successful models could reduce the need for expensive experimentation, allow proof-of-concept analysis and simulations, and form the foundation of a theory of intrusion detection.
Polymeric elements for adaptive networks (2007)

Polymeric electrochemical elements of adaptive networks are considered. The main features of these elements are compared with the elements of the nervous system of the snail Lymnaea stagnalis. In particular, synthetic analogues of neurons and synapses are fabricated. The capability of the system for learning is demonstrated with a model of the simplest network composed of eight electrochemical elements. An alternative approach based on the formation of fiber networks is proposed. This approach will make it possible to fabricate more complex systems with a random distribution of mutual contacts between elements.