gebhart/patrepeval huggingface dataset:
Bandwidth performance of 16-element thinned phased array with tapped delay-line filter (1991)

The bandwidth performance of a thinned phased adaptive array with and without a delay-line processor are compared. Five- and nine-jammer scenarios are considered for two EHF bands, 0.125 and 2.0 GHz. The null-depth which was used as the measure of performance was computed over the nulling band for three different delay-line configurations. The simulation results give some insight into the way in which delay-line compensation provides improved performance as the interference bandwidth increases.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Undergraduate Programs and Graduate Education (1974)

The Focus on Undergraduate Programs section of the most recent Unterrichtspraxis (Spring, 1974) raises questions about the nature of the undergraduate German major and is only one more indication that the shape of that major is currently undergoing searching review at most institutions. Changes are taking place as German departments strive to survive the uncertainties of the seventies. In view of such a fluid
Design and Implementation on a Sub-band based Acoustic Echo Cancellation Approach (2011)

This paper describes the design and implementation of a sub-band based acoustic echo cancellation approach, which incorporates the normalized least mean square algorithm and the double talk detection algorithm. According to the simulation, the proposed approach works well in the modest linear noisy environment. Since the proposed approach is implemented in fix-pointed C, it can be easily ported into fixed-point DSPs to cancel acoustic echo in real systems.
Description and application of biodosimetry—a testing procedure for UV systems (1999)

Research Article| June 01 1999 Description and application of biodosimetry—a testing procedure for UV systems G. Leuker G. Leuker Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (1999) 48 (4): 154–160. https://doi.org/10.2166/aqua.1999.0016 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Twitter LinkedIn Tools Icon Tools Cite Icon Cite Permissions Search Site Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsThis Journal Search Advanced Search Citation G. Leuker; Description and application of biodosimetry—a testing procedure for UV systems. Journal of Water Supply: Research and Technology-Aqua 1 June 1999; 48 (4): 154–160. doi: https://doi.org/10.2166/aqua.1999.0016 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Biodosimetry is a new testing procedure for UV systems used to disinfect water. It is the first standardised test method for such systems that has been proven in test stand comparison with respect to practicality and reproducibility. The method is unique in that the reactor geometry and the different types of UV lamps are objectively incorporated into the determination of the microbiological performance. All results that follow this report are the result of practical experiments with the biodosimetry: test between two laboratories, the comparison of different reactor design and different types of UV lamps. This content is only available as a PDF. © IWA Publishing 1999 You do not currently have access to this content.
Classification as Mining and Use of Labeled Itemsets. (1999)

The multi-marker panel of TBI-related biomarkers performed well in discriminating unfavorable and favorable outcomes in the acute period after moderate-to-severe TBI. However, the combination of these biomarkers did not outperform s100B alone.
The Potential Supply of Organ Donors (1992)

Many more organ donors are available than are being accessed through existing organ procurement efforts. Realistically, it may be possible to increase by 80% the number of donors available in the United States (up to 7300 annually). It is conceivable, although unlikely, that the supply of donor organs could achieve a level to meet demand.
Why approximate LU decompositions of finite element discretizations of elliptic operators can be computed with almost linear complexity (2005)

Although the asymptotic complexity of direct methods for the solution of large sparse finite element systems arising from second-order elliptic partial differential operators is far from being optimal, these methods are often preferred over modern iterative methods. This is mainly due to their robustness. In this article it is shown that an (approximate) LU decomposition exists and that it can be computed in the algebra of hierarchical matrices with almost linear complexity and with the same robustness as the classical LU decomposition. Mathematics Subject Classification (2000): 35C20, 65F05, 65F50, 65N30
Parametric description of a scan-display system (1969)

Automatic Pattern Recognition and graphical data processing have recently received considerable attention. In addition to analysis and processing of pictorial information, there is a need for interactive display systems to present both intermediate and final processed data. The subject of graphic display terminals has been extensively discussed in the literature. Scan-display systems oriented towards image processing, however, with particular attention to bypassing the central processing unit for as many tasks as possible have not had comparable development. This paper is focused on this latter area.
FORMULATION AND EVALUATION OF TRAMADOL HYDROCHLORIDE MOUTH DISSOLVING TABLET (2010)

Tramadol is an Opioid pain-killer. It is bitter in taste. In the present study an attempt has been made to prepare bitterless mouth dissolving tablets of Tramadol hydrochloride using ion exchange resin Indion 294 as a taste masking agent. Ion exchange resinates and tasteless granules were prepared with Indion 294 in weight ratio of 1:2. Prepared complex was further examined through U.V. Visible Spectroscopy. The mouth dissolving tablets of both resinates and granules were prepared with different superdisintegrants e.g. cross carmallose sodium, crosspovidone & Indion 234 in different concentration. The blend was examined for their flow properties. The tablets were evaluated for physiochemical properties. The tasteless blends having good flow properties. The prepared zero defect mouth dissolving tablets were passed all the official and non-official parameters. The disintegration time was also tested and was found to be less than one minute. A tablet having resinates shows less time for onset of action of drug due to enhanced and fast release of Tramadol hydrochloride.  It was concluded that tablets prepared by addition of superdisintegrant Indion 234 has less disintegration time, fast and more dug release than those prepared by crosspovidone.
Fast context switching by hierarchical task allocation and reconfigurable cache (2004)

A multithreaded processor architecture enables fast context switching for tolerating memory access latency and bridging synchronization gap, and thus enables efficient utilization of execution pipelines. However, it cannot prevent all pipeline stalls; stalls will still occur when all processor built-in threads are in a wait state or there are not enough threads in a task to fill up all available context slots, since the mechanism for switching active threads is effective only for processor built-in contexts. In this paper, we propose an architecture that increases the virtual number of built-in contexts and enables seamless task switching by allocating and swapping task contexts hierarchically between processor and memory in a multitasking environment. At the same time, we aim at supporting real-time applications through hierarchical task allocation based on task priority and fast response mechanisms for interrupt requests exploiting the multiple-context architecture. Moreover, we propose two reconfigurable cache applications, a priority-based partitioning cache and a FIFO buffer, and their implementation methods. We have extended the general-purpose RISC processor architecture and are developing a new RISC core which can be used to implement the seamless task switching, fast response to interrupt requests, and the reconfigurable caches, for supporting real-time processing in a multi-tasking environment. we describe the design of the RISC core in this paper.
Polyaniline Based Acrylic Blends for Iron Corrosion Protection (2001)

Coating strategies for corrosion protection considering intrinsically electronic conducting polymers have become important mainly because of restrictions on the use of heavy metals due to their environmental problems. This work presents the electrochemical behavior of an acrylic blend formed by sulfonate-doped polyaniline and poly(methyl methacrylate) used for corrosion protection of iron in chloride solutions. The results would indicate that these blends have a dual protection mechanism; forming a passivating complex with the dopant anion (camphorsulfonate) and simultaneously acting as a physical barrier to avoid chloride anion penetration. © 2001 The Electrochemical Society. All rights reserved.
All Supply Chains Don't Flow Through: Understanding Supply Chain Issues in Product Recalls (2008)

Our paper conceptualizes and highlights the role of the supply chains in China's product recall problems. We raise questions about the interrelationships of the focal manufacturer and the supplier firms and the consequences of these relationships. We address some of the causes of the current situation, including a discussion of deep supply chains, the importance of relationships, the role of trust and the impact of cultural misunderstandings. We suggest many future research questions to further understand how the supply chain can cause or deter product recalls.
The High temperature oxidation of iron‐chromium alloys containing 0.1 wt. % cerium or cerium oxide (1987)

Abstract The effects of 0.1 wt% Ce in both metal and oxide form on the high temperature oxidation of Fe‐Cr (Cr = 10, 12, 14, 16, 18, 20) have been investigated at 1000°C in a 0.1315 bar O 2 /He mixture at a total pressure of 1 bar. The presence of Ce and CeO 2 markedly affects the oxidation characteristics of the tested alloys, causing rapid initial coverage with protective oxide, decreased overall rates of oxidation, modifications in scale morphologies and enhanced scale adhesion. There is a possibility of a “trade‐off” between the amount of Cr in the Fe‐Cr materials and the presence of Ce of CeO 2 , since such additions have been shown to decrease the amount of Cr necessary to form a protective Cr 2 O 3 scale on the alloy surface. The mechanisms by which the Ce or CeO 2 improve the oxidation behaviour of Fe‐Cr alloys are discussed.
Modelling and Simulation of Vehicle Kinematics and Dynamics (2017)

With the rapid growth in the automotive industry, vehicles have become more complex and sophisticated. Vehicle development today, involves integration of both electrical and mechanical systems. The ...
Novel models of grey relational analysis based on visual angle of similarity and nearness (2011)

Abstract Purpose – The purpose of this paper is to solve the problems existing in traditional grey incidence models and advance several new grey incidence models based on visual angle of similarity and nearness. Design/methodology/approach – Based on the definition of traditional grey incidence models, two novel grey incidence models, grey similar incidence model and grey close incidence model, are studied in this paper. The interrelations and influence can be measured by the new models with different visual angle of similarity and/or nearness, respectively. The grey similar incidence model is used mainly to measure the similitude degree of the geometric patterns of sequence curves. The grey close incidence model is used mainly to measure the nearness of the sequence curves in space. The properties of the new models are discussed. It is proved that the proposed models are simplified methods to calculate the similitude degree and the close degree of grey incidence models. Findings – The results show that the two novel grey incidence models satisfy the grey incidence axiom properly. It is useful to calculate the similitude degree and the close degree of two different sequences, and the process of calculating is easier than with traditional grey incidence models. Practical implications – The method exposed in the paper can be used to calculate every two sequences. The similitude degree and the close degree of two different sequences can be given out. The method can also be used to rank sequences of more than two. Originality/value – The paper succeeds in constructing two novel grey incidence models. The properties of novel model are studied and it is undoubtedly a new development in grey systems theory.
A New Directional Weighted Median Filter for Removal of Random-Valued Impulse Noise (2007)

The known median-based denoising methods tend to work well for restoring the images corrupted by random-valued impulse noise with low noise level but poorly for highly corrupted images. This letter proposes a new impulse detector, which is based on the differences between the current pixel and its neighbors aligned with four main directions. Then, we combine it with the weighted median filter to get a new directional weighted median (DWM) filter. Extensive simulations show that the proposed filter not only can provide better performance of suppressing impulse with high noise level but can preserve more detail features, even thin lines. As extended to restoring corrupted color images, this filter also performs very well
Molecular Mechanisms of Ghrelin-Mediated Endothelial Nitric Oxide Synthase Activation (2008)

Metabolic syndrome accelerates the atherosclerotic process, and the earliest event of which is endothelial dysfunction. Ghrelin, a newly discovered gastric peptide, improves endothelial function and inhibits proatherogenic changes. In particular, low ghrelin concentration has been associated with several features of metabolic syndrome, including obesity, insulin resistance, and high blood pressure. However, the molecular mechanisms underlying ghrelin vascular actions remain largely unclear. Here, we showed that ghrelin activated endothelial nitric oxide (NO) synthase (eNOS) in cultured endothelial cells (ECs) and in intact vessels. Specifically, ghrelin rapidly induced phosphorylation of eNOS on an activation site and production of NO in human umbilical vein ECs and bovine aortic ECs. The eNOS phosphorylation was also observed in mouse aortas ex vivo perfused with ghrelin and in aortic tissues isolated from mice injected with ghrelin. Mechanistically, ghrelin stimulated AMP-activated protein kinase (AMPK) and Akt activation in cultured ECs and intact vessels. Inhibiting AMPK and Akt with their pharmacological inhibitors, small interference RNA and adenoviruses carried dominant-negative mutants, markedly attenuated ghrelin-induced eNOS activation, and NO production. Furthermore, ghrelin receptor/Gq protein/calcium-dependent pathway mediates activation of AMPK, Akt, and eNOS, and calmodulin-dependent kinase kinase is a potential convergent point to regulate Akt and AMPK activation in ghrelin signaling. Importantly, eNOS activation is critical for ghrelin inhibition of vascular inflammation. Together, both in vitro and in vivo data demonstrate a new role of ghrelin signaling for eNOS activation, and highlight the therapeutic potential for ghrelin to correct endothelial dysfunction associated with atherosclerotic vascular diseases and metabolic syndrome.
Terabyte optical tape recorder (2003)

A description is given of a terabyte optical tape recorder. In addition, an overview is presented of optical storage data and the advantages and disadvantages of optical tape. Previous attempts at building optical tape recorders and methods that were used to overcome the problems are discussed. Details are presented on how the optical tape recorder works, and typical applications are given.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Leveraging Old Intellectual Property to Accelerate Technology Entrepreneurship (2013)

IntroductionImagine if an entrepreneur had access to a substantial customer base on day one. Imagine if that access was sole and exclusive to the entrepreneur and that the customer base provided the necessary funding and knowledge to the entrepreneur at the very beginning, during a time of limited resources.Entrepreneurs should be on the lookout for older technology assets
Effect of Adrenocorticotropin and Cortisol on Luteinizing Hormone Surge and Estrous Behavior of Cows (1982)

In six cows, twice daily administration of 100 IU corticotropin for 3.5 days during the follicular phase delayed the preovulatory luteinizing hormone surge and onset of behavioral estrus. Corticotropin increased progesterone and decreased estradiol and basal luteinizing hormone concentrations of blood. Following corticotropin withdrawal, a shortened period of behavioral estrus (50% of control) was accompanied by an apparent luteinizing hormone surge and ovulation. To ascertain if these effects were caused by the elevated corticosteroid concentrations induced by corticotropin, we infused intravenously four heifers with cortisol sodium succinate. During this infusion, luteinizing hormone surge and estrous behavior were inhibited; however, estradiol and basal luteinizing hormone concentrations were not affected. Furthermore, there was no luteinizing hormone surge, ovulation, or behavioral estrus after cessation of cortisol treatment. These results are consistent with a role for corticosteroids in mediating inhibitory effects on reproduction produced by corticotropin administration.
ChemInform Abstract: A Novel Procedure for the Synthesis of Benzo[b][1,8]naphthyridine‐3‐carboxylate Derivatives from Morita—Baylis—Hillman Adduct Acetates. (2009)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
OMR-Arena: Automated Measurement and Stimulation System to Determine Mouse Visual Thresholds Based on Optomotor Responses (2013)

Measurement of the optomotor response is a common way to determine thresholds of the visual system in animals. Particularly in mice, it is frequently used to characterize the visual performance of different genetically modified strains or to test the effect of various drugs on visual performance. Several methods have been developed to facilitate the presentation of stimuli using computer screens or projectors. Common methods are either based on the measurement of eye movement during optokinetic reflex behavior or rely on the measurement of head and/or body-movements during optomotor responses. Eye-movements can easily and objectively be quantified, but their measurement requires invasive fixation of the animals. Head movements can be observed in freely moving animals, but until now depended on the judgment of a human observer who reported the counted tracking movements of the animal during an experiment. In this study we present a novel measurement and stimulation system based on open source building plans and software. This system presents appropriate 360° stimuli while simultaneously video-tracking the animal's head-movements without fixation. The on-line determined head gaze is used to adjust the stimulus to the head position, as well as to automatically calculate visual acuity. Exemplary, we show that automatically measured visual response curves of mice match the results obtained by a human observer very well. The spatial acuity thresholds yielded by the automatic analysis are also consistent with the human observer approach and with published results. Hence, OMR-arena provides an affordable, convenient and objective way to measure mouse visual performance.
Cerebral-tissue XeCI excimer laser photoablation: preliminary in-vivo studies in the rat brain (1993)

Deep brain tissue lesions produced by XeCl excimer laser were studied in 14 rats. Fiberoptic was stereotactically implanted and the lesion was produced by one pulse. MRI and histological controls were performed at various dates following the lesion. The findings are relevant to other lesion procedures. Some XeCl laser properties seem useful in stereotactical procedures.
The Nature of the Arabidopsis <i>fon1</i> Mutations (1998)

Recently, we described three similar Arabidopsis mutants, floral organ number ( fon ) 1-1 , fon1-2 , and fon1-3 , that each exhibit an increased number of stamens and carpels ([Huang and Ma, 1997][1]). Although these phenotypes resemble those conditioned by weak alleles of superman ( sup ), on the
Interferon and Resistance to Upper Respiratory Virus Illness (1969)

The role of interferon in the common cold syndrome caused by Coxsackie virus A type 21 and by rhinovirus type 15 was evaluated in volunteers. Interferon appeared in nasal wash transiently and early enough during infection to have had a role in causing recovery from illness; it was not found in serum. The influence of one respiratory virus infection on a subsequent one was evaluated by challenging men with Coxsackie virus 4 weeks after a primary rhinovirus infection. Increasing severity of illness during primary rhinovirus infection was associated with decreasing severity of illness during secondary Coxsackie virus infection. No correlation existed between interferon titers in nasal wash during the two infections, but titers during secondary Coxsackie virus infection were less than those during primary Coxsackie virus infection in other volunteers. Interferon did not appear to account for the resistance to Coxsackie virus illness afforded by a preceding rhinovirus common cold.
Rhodium metal–rhodium oxide (Rh–Rh<sub>2</sub>O<sub>3</sub>) nanostructures with Pt-like or better activity towards hydrogen evolution and oxidation reactions (HER, HOR) in acid and base: correlating its HOR/HER activity with hydrogen binding energy and oxophilicity of the catalyst (2018)

Rh–Rh<sub>2</sub>O<sub>3</sub> nanostructures exhibit superior HER and HOR in acid and base; hydrogen binding energy and oxophilicity were found to be the equivalent descriptors for HER/HOR in alkaline medium.
Lactose, water, salts and vitamins (1997)

Lactose - chemistry and physico-chemical properties lactose - chemical derivatives lactose - enzymatic modification lactose - nutritional significance lactose - maillard browning and other heat-induced changes in milk and milk products milk salts - their secretion, concentrations and physical chemistry. Nutritional aspects of minerals in bovine and human milk water in milk products vitamins in milk and milk products flavours and off-flavours in milk and dairy products physico-chemical properties of milk.