gebhart/patrepeval huggingface dataset:
Channel estimation with interference cancellation for a MIMO receiver using iterative equalization and decoding (2008)

This paper proposes a novel channel estimation method for iterative equalization in MIMO systems. The proposed method incorporates co-channel interference (CCI) cancellation in the channel estimator and the channel estimation is successively performed with respect to each stream. Accuracy of channel estimation holds the key to be successfully converged the iterative equalization and decoding process. Although the channel estimates can be re-estimated by means of LS (Least Square) channel estimation using tentative decisions obtained in the iterative process, its performance is severely limited in a MIMO system because of erroneous decisions and ill-conditioned channel estimation matrix. The proposed method can suppress the above effects by means of CCI cancellation and successive channel estimation. Computer simulation confirms that the proposed channel estimation method can accurately estimate the channel, and the receiver with iterative equalization and the proposed method achieves excellent decoding performance in a MIMO-SM (Spatial Multiplexing) system.
The cytologic diagnosis of adenocarcinoma in situ of the cervix uteri and related lesions. III. Pitfalls in diagnosis. (1988)

Potential pitfalls in the cytologic diagnosis of adenocarcinoma in situ (AIS) of the cervix are illustrated by the presentation of three cases of benign cervical lesions initially diagnosed as AIS: cervical endometriosis, tubal metaplasia of the endocervix and changes due to a previous biopsy. The differential diagnosis of endocervical glandular abnormalities is discussed.
TCP in networks with abrupt delay variations and random loss (2002)

This paper provides a preliminary investigation of the effect of abrupt round-trip variations on the performance of different versions of TCP. It is shown that end-to-end goodput of a bulk TCP transfer can be severely limited by variations in RTT primarily due to the non-adaptiveness of TCP's timeout estimation and fast recovery thresholds. The paper proposes a model for evaluating the performance of TCP in environments with abrupt RTT changes and random packet loss and outlines possible future TCP improvements.
Titanium-tungsten contacts to silicon. II. Stability against aluminum penetration (1986)

An investigation of the thermal stability and Schottky behavior of Ti-W thin film contacts to n-Si in the presence of an Al overlayer is reported. Rutherford backscattering spectroscopy, glancing-incidence x-ray diffraction, and current-voltage measurements were used to characterize the multilayer contact structures. The low Schottky barrier height, 0.51 eV, of the Al/Ti80W20/n-Si structure was repeatedly measured after 30-min anneals up to 500 °C. This stability was improved to 600 °C when a diffusion barrier layer of Ti30W70 alloy was included. The detection and significance of Al penetration in low Schottky barrier height contacts to Si have been discussed.
Interaction of halogenacetates and SH compounds (1933)

drew attention to the remarkably toxic nature of certain of the halogenacetic acids and their role as powerful and selective inhibitors of lactic acid formation and of alcoholic fermentation, these compounds have assumed great importance in physiology, and the numerous investigations of fundamental value to the theories of muscular contraction, tissue glycolysis and fermentation which have resulted show the usefulness of these labile halogen compounds as reagents in the study of intermediary tissue metabolism. But in spite of the many investigations, in no one case has the mechanism of their action been explicable in any clearly defined way, though various suggestions, such as those of Waldschmidt-Leitz and Schiffner [1932] and of Bersin [1932], have been advanced from time to time.
Hydrogenation Reactions and Their Kinetics for SiCl<SUB>4</SUB>(g)&ndash;H<SUB>2</SUB>(g) and SiCl<SUB>4</SUB>(g)&ndash;Si(s)&ndash;H<SUB>2</SUB>(g) Systems Using a Fixed Bed Type Reactor (1992)

Two kinds of hydrogenation reaction of SiCl4(g), i.e.:SiCl4(g)+H2(g)=SiHCl3(g)+HCl(g),andSi(s)+3SiCl4(g)+H2(g)=4SiHCl3(g)have been studied under various inlet gas compositions and temperatures in a fixed bed reactor at an atmospheric pressure and without any catalyst addition in order to elucidate their intrinsic reaction kinetics in this investigation. A higher conversion rate has been obtained in the latter gas-solid reaction scheme. A segment compartment model has been used to analyse the reactor performance of a plug flow type for these conversion reactions. A second order, reversible rate equation for the former gas-gas reaction has been assumed and adapted in the rate expression, which has been then used in the reactor performance model calculation. For the latter gas-solid reaction, the two step-wise reaction mechanism; i.e. the first gas-gas reaction step to produce HCl(g) and the second gas-solid reaction step of this HCl(g) with Si(s) with a topo-chemical rate model, has been adapted in the rate expression, which was then used in the reactor performance calculation. There have been shown good correspondence between the experimental results and the reactor performance calculation using these postulated reaction rate equations.
IGF-I, growth hormone, and/or exercise effects on non-weight-bearing soleus of hypophysectomized rats (1996)

The effects of insulin-like growth factor (IGF-I) or growth hormone (GH) with and without exercise on predominantly slow muscles of hypophysectomized hindlimb-suspended (HS) rats were determined. HS resulted in a 21, 23, and 30% decrease in soleus, adductor longus, and vastus intermedius masses, respectively, compared with ambulatory rats. Compared with values in HS rats, IGF-I increased the vastus intermedius mass and GH or exercise alone increased both the soleus and vastus intermedius masses. There was a strong interactive effect between GH, but not IGF-I, and exercise in all three muscles of HS rats. The soleus fiber type distribution of HS rats was not affected by any treatment. HS resulted in a 24, 18 (P > 0.05), 32, and 20% (P > 0.05) decrease in the size of soleus fibers containing type I, IIa, I + IIa, and IIa + IIx myosin heavy chains, respectively, compared with ambulatory hypophysectomized rats. Hormone or exercise alone had no effect on fiber size in HS rats. However, all fiber sizes (except for type IIa + IIx in IGF-I with exercise rats) were larger in HS rats treated with GH or IGF-I and exercise than those in HS rats. These data indicate an interactive effect of both GH and IGF-I with exercise in maintaining fiber size of chronically non-weight-bearing predominantly slow muscles. Furthermore, the results suggest that the myosin heavy-chain phenotype in rats deficient in all pituitary factors is unresponsive to short-term administration of either GH or IGF-I or to exercise or HS.
Capacitor-coupled logic using GaAs depletion-mode f.e.t.s (1980)

A new method of interconnecting depletion-mode GaAs f.e.t. logic stages, using capacitive coupling, eliminates the need for a negative power supply and is more tolerant of processing spreads, particularly of pinch-off voltage. The technique may be combined with conventional level shifting, operating at very low current. The use of capacitance may be extended to achieve clocked dynamic data storage with very low power dissipation.
Program to Study SIC Fiber Reinforced Glass Matrix Composites. (1979)

Glass-ceramic composites reinforced with SiC fibers have been fabricated that exhibit good strength properties from RT to 1000 C. In particular, a lithium-aluminum-silicate (LAS) matrix reinforced with SiC yarn has been shown to possess bend strengths of over 690 MPa (100 ksi) from RT to 800 C. However, the TiO2 nucleating agent present in the usual LAS materials can cause matrix crystallization during hot-pressing and fiber-matrix interactions, making the fabrication of consistently high strength composites extremely difficult. The substitution of ZrO2 for the TiO2 appears to have eliminated this problem. Composites fabricated from SiC monofilament with a magnesium-aluminum-silicate (MAS) matrix have also exhibited high strengths from RT to 1000 C. Again, however, consistent fabrication of reproducibly high strength composites has been difficult due to lack of wetting and bonding between the SiC fibers and the matrix. (Author)
Reptile: a Scalable Metalearning Algorithm (2018)

This paper considers metalearning problems, where there is a distribution of tasks, and we would like to obtain an agent that performs well (i.e., learns quickly) when presented with a previously unseen task sampled from this distribution. We present a remarkably simple metalearning algorithm called Reptile, which learns a parameter initialization that can be fine-tuned quickly on a new task. Reptile works by repeatedly sampling a task, training on it, and moving the initialization towards the trained weights on that task. Unlike MAML, which also learns an initialization, Reptile doesn't require differentiating through the optimization process, making it more suitable for optimization problems where many update steps are required. We show that Reptile performs well on some well-established benchmarks for few-shot classification. We provide some theoretical analysis aimed at understanding why Reptile works.
Application of Long-Circulating Liposomes to Cancer Photodynamic Therapy. (1997)

Photodynamic therapy (PDT) as a cancer treatment is notable for its quite low side effects in comparison with those of chemotherapy and radiotherapy. However, the accumulation of porphyrin derivatives used in PDT into tumor tissues is rather low. Since long-circulating liposomes are known to accumulate passively into tumor tissues, we liposomalized a porphyrin derivative, benzoporphyrin derivative monoacid ring A (BPD-MA), and used these liposomes to investigate the usefulness of PDT for tumor-bearing mice. BPD-MA was liposomalized into glucuronate-modified liposomes, which are known to be long-circulating. These liposomes were injected i.v. into Balb/c mice bearing Meth A sarcoma, and tumor regression and survival time were monitored after irradiation with laser light. Tumor regression and complete curing of tumor (80% cure rate by the treatment with 6 mg/kg BPD-MA) were observed when long circulating liposomalized BPD-MA was injected and laser-irradiated. In contrast, only a 20% cure rate was obtained when the animals were treated with BPD-MA solution or BPD-MA entrapped in conventional liposomes. These results suggest that a long-circulating liposomal formulation of photo-sensitive agents is useful for PDT.
Decreased lipid efflux and increased susceptibility to cholesterol-induced apoptosis in macrophages lacking phosphatidylcholine transfer protein (2005)

Macrophages are the predominant cellular component of atherosclerotic lesions, where they scavenge oxidatively modified lipoproteins while defending themselves against cholesterol-induced cytotoxicity by adaptive mechanisms that depend in part on the synthesis, distribution and efflux of phosphatidylcholines. PC-TP (phosphatidylcholine transfer protein) is a START (steroidogenic acute regulatory protein-related lipid transfer) domain protein that catalyses the intermembrane transfer of phosphatidylcholines and promotes apolipoprotein AI-mediated lipid efflux when overexpressed in the cytosol of Chinese-hamster ovary cells. To explore a role for PC-TP in the adaptive responses of macrophages to cholesterol loading, we utilized peritoneal macrophages from mice with homozygous disruption of the gene encoding PC-TP (Pctp(-/-)) and wild-type littermate controls. PC-TP was abundantly expressed in macrophages from wild-type but not Pctp(-/-) mice. In cholesteryl ester-loaded macrophages from Pctp(-/-) mice, the apolipoprotein AI-mediated efflux of phospholipids and cholesterol was decreased. This could be attributed to proportional decreases in the expression levels of ATP-binding cassette A1. Also, in response to free cholesterol loading, the absence of PC-TP from macrophages was associated with marked increases in apoptotic cell death. These findings suggest that PC-TP in macrophages may serve an atheroprotective role by defending against cholesterol-induced cytotoxicity.
Massively Distributed SGD: ImageNet/ResNet-50 Training in a Flash (2018)

Scaling the distributed deep learning to a massive GPU cluster level is challenging due to the instability of the large mini-batch training and the overhead of the gradient synchronization. We address the instability of the large mini-batch training with batch-size control and label smoothing. We address the overhead of the gradient synchronization with 2D-Torus all-reduce. Specifically, 2D-Torus all-reduce arranges GPUs in a logical 2D grid and performs a series of collective operation in different orientations. These two techniques are implemented with Neural Network Libraries (NNL). We have successfully trained ImageNet/ResNet-50 in 122 seconds without significant accuracy loss on ABCI cluster.
Structure of LEP100, a glycoprotein that shuttles between lysosomes and the plasma membrane, deduced from the nucleotide sequence of the encoding cDNA. (1988)

LEP100, a membrane glycoprotein that has the unique property of shuttling from lysosomes to endosomes to plasma membrane and back, was purified from chicken brain. Its NH2-terminal amino acid sequence was determined, and an oligonucleotide encoding part of this sequence was used to clone the encoding cDNA. The deduced amino acid sequence consists of 414 residues of which the NH2-terminal 18 constitute a signal peptide. The sequence includes 17 sites for N-glycosylation in the NH2-terminal 75% of the polypeptide chain followed by a region lacking N-linked oligosaccharides, a single possible membrane-spanning segment, and a cytoplasmic domain of 11 residues, including three potential phosphorylation sites. Eight cysteine residues are spaced in a regular pattern through the lumenal (extracellular) domain, while a 32-residue sequence rich in proline, serine, and threonine occurs at its midpoint. Expression of the cDNA in mouse L cells resulted in targeting of LEP100 primarily to the mouse lysosomes.
Performance of Strong Ionic Hydrogels Based on 2-Acrylamido-2-Methylpropane Sulfonate as Draw Agents for Forward Osmosis (2014)

While forward osmosis (FO) has great potential to be the next generation water treatment technology, it is constrained by the development of ideal draw agents and membranes. Herein, a series of copolymerized hydrogels based on strong ionic monomer sodium 2-acrylamido-2-methylpropane sulfonate (AMPS-Na) and thermosensitive monomer N-isopropylacrylamide (NIPAM) have been synthesized and used for the first time as draw agents in the FO process. The effects of the composition of poly(NIPAM-co-AMPS-Na) [P(NIPAM-co-AMPS)] hydrogels and operational conditions including draw agent concentrations, temperature, membrane orientation, salinity of feed solution, velocity of feed solution, and running times on the FO performance have been evaluated systematically. The results demonstrate that the water flux increases with increases of the content of AMPS-Na incorporated into the hydrogel and hydrogel concentration in the draw solution, e.g., from 0.40 LMH rising up to 2.85 LMH. Besides, the water flux increases by 18% as the temperature increases from 5 to 27°C. In addition, these hydrogels remained active even after five times regeneration and reuse with a total water flux decrease of less than 5%. Furthermore, these hydrogels have negligible reverse diffusion through the FO membrane as compared with the corresponding monomer mixture and NaCl, which may avoid possible contamination on the feed solution and lower the renewable cost. All these results indicate that these synthesized P(NIPAM-co-AMPS) hydrogels are promising draw agents for the FO process.
Independent and population-specific association of risk variants at the IRGM locus with Crohn's disease (2010)

DNA polymorphisms in a region on chromosome 5q33.1 which contains two genes, immunity related GTPase related family, M (IRGM) and zinc finger protein 300 (ZNF300), are associated with Crohn's disease (CD). The deleted allele of a 20 kb copy number variation (CNV) upstream of IRGM was recently shown to be in strong linkage disequilibrium (LD) with the CD-associated single nucleotide polymorphisms and is itself associated with CD (P < 0.01). The deletion was correlated with increased or reduced expression of IRGM in transformed cells in a cell line-dependent manner, and has been proposed as a likely causal variant. We report here that small insertion/deletion polymorphisms in the promoter and 5' untranslated region of IRGM are, together with the CNV, strongly associated with CD (P = 1.37 x 10(-5) to 1.40 x 10(-9)), and that the CNV and the 5'-untranslated region variant -308(GTTT)(5) contribute independently to CD susceptibility (P = 2.6 x 10(-7) and P = 2 x 10(-5), respectively). We also show that the CD risk haplotype is associated with a significant decrease in IRGM expression (P < 10(-12)) in untransformed lymphocytes from CD patients. Further analysis of these variants in a Japanese CD case-control sample and of IRGM expression in HapMap populations revealed that neither the IRGM insertion/deletion polymorphisms nor the CNV was associated with CD or with altered IRGM expression in the Asian population. This suggests that the involvement of the IRGM risk haplotype in the pathogenesis of CD requires gene-gene or gene-environment interactions which are absent in Asian populations, or that none of the variants analysed are causal, and that the true causal variants arose after the European-Asian split.
S1-hypersensitive sites in eukaryotic promoter regions (1984)

We have examined by fine mapping the S1 nuclease-hypersensitivity of the 5' flanking regions of the human beta-globin and rat preproinsulin II genes and of the SV40 origin/enhancer region. In all cases S1-hypersensitive sites are located in known or presumed promoter/regulatory regions. Though a consensus DNA sequence is not evident, all of these sites reside in predominantly homopurine-homopyrimidine stretches. The alternate (non-B) DNA structure which is revealed by the enzymatic probe is a sequence-dependent feature of a short stretch of DNA, which is retained upon transplantation into a foreign environment. The alternate structure exhibits S1-nicking patterns uniquely different from those associated with the presence of Z-DNA.
TK gene combined with mIL-2 and mGM-CSF genes in treatment of gastric cancer (2003)

TK/GCV can kill tumor cells and inhibit the tumor growth in vivo. IL-2 and GM-CSF strongly enhance the anti-tumor effect. Through the retrovirus and liposome methods, the suicide gene and cytokine genes are all expressed in the tissues.
Apparatus for alternating fields microelectrophoresis (1976)

Based on principles which are outlined, an apparatus for alternating fields microelectrophoroesis is described. It uses a laternal orientation cell which is moved vertically at constant speed while a wave burst is applied to the cell. The resulting particles movements are photographed through dark-field illumination and a microscope. The mobility is deduced from the track amplitudes on the photographs. An easy temperature correction is given. The main advantage of the A. C. microelectroesis method is a higher precision in the determination of the mobility distribution curve.
Note (1944)

G. F. Smith, J. Chem. Soc., 1944, 113 DOI: 10.1039/JR9440000113
Flexible organic transistors based on a solution-sheared PVDF insulator (2015)

A highly scalable solution shearing technique for processing an organic semiconductor and an insulator has resulted in reproducible transistors on plastics.
An Efficient Light Collector (1971)

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 David C. Brown; An Efficient Light Collector. Rev. Sci. Instrum. 1 May 1971; 42 (5): 729. https://doi.org/10.1063/1.1685219 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 ContentAIP Publishing PortfolioReview of Scientific Instruments Search Advanced Search |Citation Search
Inhomogeneously broadened line shapes and information content of calculated paramagnetic resonance spectra of biological molecules containing high-spin iron(III) (1975)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInhomogeneously broadened line shapes and information content of calculated paramagnetic resonance spectra of biological molecules containing high-spin iron(III)R. E. CoffmanCite this: J. Phys. Chem. 1975, 79, 11, 1129–1136Publication Date (Print):May 1, 1975Publication History Published online1 May 2002Published inissue 1 May 1975https://pubs.acs.org/doi/10.1021/j100578a018https://doi.org/10.1021/j100578a018research-articleACS PublicationsRequest reuse permissionsArticle Views57Altmetric-Citations19LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access options Get e-Alerts
Ultrashort electromagnetic waves IV — Guided propagation (1943)

When Doctor S. A. Schelkunoff presented the material contained in this article as a lecture before the basic science group of the New York Section, he remarked that it was “nonmathematical.” Certainly the electrical engineer will welcome any concept which allows an easier approach to the solution of certain problems involved in wave guides than the more complete equivalent field-theory method. In this fourth article in a series of six on ultrashort electromagnetic waves, Doctor Schelkunoff combines transmission-line theory with optical analogy and derives useful relations for both wave guides and cavity resonators. The three preceding articles appeared in the March, April, and May issues of “Electrical Engineering.”
MORC Family ATPases Required for Heterochromatin Condensation and Gene Silencing (2012)

Transposable elements (TEs) and DNA repeats are commonly targeted by DNA and histone methylation to achieve epigenetic gene silencing. We isolated mutations in two Arabidopsis genes, AtMORC1 and AtMORC6, which cause derepression of DNA-methylated genes and TEs but no losses of DNA or histone methylation. AtMORC1 and AtMORC6 are members of the conserved Microrchidia (MORC) adenosine triphosphatase (ATPase) family, which are predicted to catalyze alterations in chromosome superstructure. The atmorc1 and atmorc6 mutants show decondensation of pericentromeric heterochromatin, increased interaction of pericentromeric regions with the rest of the genome, and transcriptional defects that are largely restricted to loci residing in pericentromeric regions. Knockdown of the single MORC homolog in Caenorhabditis elegans also impairs transgene silencing. We propose that the MORC ATPases are conserved regulators of gene silencing in eukaryotes.