gebhart/patrepeval huggingface dataset:
Improved Lower Bounds on Time-of-Arrival Estimation Error in Realistic UWB Channels (2006)

This paper investigates lower bounds on time-of-arrival (ToA) estimation error for ultrawide bandwidth ranging systems operating in realistic multipath environments. Based on the Ziv-Zakai lower bound, we derive a lower bound for the ToA estimation error using both the IEEE 802.15.4a channel models and experimentally measured data. It is shown that for practical signal-to-noise values the classical Cramer-Rao lower bound is too optimistic when operating in dense multipath environments
ChemInform Abstract: The Structure of [Fe(CO)4] — An Important New Chapter in a Long‐Running Story (2001)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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.
Tetrafluoroboric Acid (2001)

[16872-11-0] BF4H (MW 87.82) InChI = 1S/BF4/c2-1(3,4)5/q-1/p+1 InChIKey = ODGCEQLVLXJUCC-UHFFFAOYSA-O [67969-83-9] C2H7BF4O (MW 133.90) InChI = 1S/C2H6O.BF4/c1-3-2;2-1(3,4)5/h1-2H3;/q;-1/p+1 InChIKey = GOKRNJRKIGVPOV-UHFFFAOYSA-O [67969-82-8] C4H11BF4O (MW 161.96) InChI = 1S/C4H10O.BF4/c1-3-5-4-2;2-1(3,4)5/h3-4H2,1-2H3;/q;-1/p+1 InChIKey = JDQHPOVUCKSJFJ-UHFFFAOYSA-O (strong acid with pKa = −0.441 and a noncoordinating counterion2) Solubility: sol H2O, alcohols and ethers. Form Supplied in: 48% aq solution; diethyl ether complex; dimethyl ether complex. Purification: commercial 50% solutions can be concentrated by evaporation at 50–60 °C/5 mmHg to give a residue of 11 N total acidity. Water can also be removed by slow addition to ice-cold acetic anhydride (dangerously exothermic reaction: caution is advised!).3 Handling, Storage, and Precautions: storage in glass containers is not recommended, although dilute solutions can be used in glass containers over short periods. Poisonous: causes burns to eyes, skin, and mucous membranes and may be fatal if ingested. Use in a fume hood with safety goggles and chemically resistant gloves and clothing. Incompatible with cyanides and strong bases: decomposes to form HF.
Cool Marble Building Envelopes: The Effect of Aging on Energy Performance and Aesthetics (2016)

Marble envelopes represent a relatively common architectural solution used in variety of historic, modern and contemporary building facades. White marble envelopes have been shown to reduce solar heat gains, while improving indoor thermal comfort and energy efficiency in summer time. While marble is useful in this context, the urban atmosphere accelerates the degradation of marble elements. This leads to changes in optical characteristics, hence the aesthetics, and affects the energy efficiency benefits offered by white marble facades. These issues are investigated in order to predict the impact of degradation on energy performance and to the aesthetic value, such as change of color and luminosity. In this study, surface degradation of white marble is analyzed by means of accelerated weathering in the laboratory while examining changes to the optical characteristics of the materials. A dynamic simulation is carried out to assess the energy performance of a building as a case study.
Definitive Hosts ofVersteriaTapeworms (Cestoda: Taeniidae) Causing Fatal Infection in North America (2016)

We previously reported fatal infection of a captive Bornean orangutan with metacestodes of a novel taeniid tapeworm, Versteria sp. New data implicate mustelids as definitive hosts of these tapeworms in North America. At least 2 parasite genetic lineages circulate in North America, representing separate introductions from Eurasia.
Design of a Multifunctional Forceps for Use in Endoscopic Surgery (2010)

This paper presents a 3.0 mm diameter endoscopic forceps design for use in minimally invasive surgical procedures, which require significant grasping and spreading forces. Models of the proposed design predict considerable improvements in the opening range (140%) and force application (87%) for both grasping and spreading when compared with currently used endoscopic forceps. Several of the tool’s design characteristics promote fail-safe malfunctions, including locking before catastrophic failure and the decreased likelihood in detached parts. Initial benchtop testing showed good agreement between prototype performance and model prediction. Frictional losses experienced during testing were found to depend on load orientation. A surgical prototype is currently being manufactured for ex vivo testing.
Glucose-Insulin-Potassium for Acute Myocardial Infarction (1998)

landmark study is reported in this issue of Circulation, 1 continuing the rediscovery of glucose-insulin-potassium (GIK) treatment of acute myocardial infarction (AMI) that began in this journal last year with a meta-analysis and editorial. 2,3 That meta-analysis considered all prior randomized trials of GIK for AMI (these were all done in the prethrombolytic era) and concluded that GIK had the potential to reduce AMI mortality by 28% to 48% depending on dosage and timing of therapy initiation relative to symptom onset. An accompanying editorial called for a modern large-scale trial of GIK in combination with thrombolysis for AMI. Such a prospective trial is now reported by the ECLA (Estudios Cardiologicos Latinoamerica) Collaborative Group, and the results are dramatic.
COPPER (I) ASSISTED CATALYST DIMERISATION OF TERMINAL ALKYNES AND THEIR ANTIBACTERIAL STUDIES (2011)

Terminal alkynes undergo oxidative - coupling smo othly in the presence of the Cu(I) Cl catalyti c system. The reaction gives 1, 3 - diynes in excellent yields under mild conditions. Structures of the all synthesized compounds were established bas ed on TLC, FT - IR, 1 H NMR, and MASS spectral data. All the synthesized compounds were examined
Baseline pretreatment contrast enhancing tumor volume including central necrosis is a prognostic factor in recurrent glioblastoma: evidence from single and multicenter trials (2016)

Baseline tumor volume is a significant prognostic factor in recurrent GBM. Clinical trial treatment arms must have a balanced distribution of tumor size, and tumor size should be considered when interpreting therapeutic efficacy.
Neoflavonoid and Biflavonoid Constituents of Calophyllum inophylloide (1992)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNeoflavonoid and Biflavonoid Constituents of Calophyllum inophylloideSwee Hock Goh, Ibrahim Jantan, and Peter G. WatermanCite this: J. Nat. Prod. 1992, 55, 10, 1415–1420Publication Date (Print):October 1, 1992Publication History Published online1 July 2004Published inissue 1 October 1992https://pubs.acs.org/doi/10.1021/np50088a005https://doi.org/10.1021/np50088a005research-articleACS PublicationsRequest reuse permissionsArticle Views327Altmetric-Citations35LEARN 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 optionsGet e-Alertsclose Get e-Alerts
Viterbi decoder aided equalization and sampling clock tracking for OFDM WLAN (2005)

IEEE 802.11a is a standard for the high-speed wireless local area network (WLAN), supporting from 6 up to 54 Mbit/s in a 5 GHz band. There are training sequences for the IEEE802.11a standard in the preamble for channel equalization and sampling timing tracking. However, the preamble is only at the initial transmission. Thereby, it is not easy to track channel variations and sampling phase errors even though there are four pilot samples in each symbol of 52 subcarriers. We propose a channel equalization algorithm and a sampling clock tracking algorithm by utilizing the Viterbi decoder output of the IEEE 802.11a WLAN standard. The proposed channel equalizer adaptively compensates channel variations. The proposed system uses re-encoded Viterbi decoder outputs as reference symbols for the adaptation of the channel equalizer. It also extracts sampling phase information with the Viterbi decoder outputs for fine adjustment of the sampling clock. The proposed sampling timing recovery and equalizer are more robust to noise and frequency selective fading environments than conventional systems using only four pilot samples.
Software re-engineering using hierarchical-client-server paradigm (HCS) and BUBBLES (2002)

A software re-engineering method based on the hierarchical-client server (HCS) paradigm is presented. The re-engineering method consists of extracting cross-reference relations and transforming the data into an hierarchical set of diagrams that represent the software architecture. These diagrams provide a documentation skeleton, and may be analyzed with the BUBBLES computer-aided software engineering (CASE) tool to reveal valuable information that encourages software re-use and helps software maintenance. This HCS paradigm and BUBBLES were used for re-engineering of several software systems of various sizes, and proved to be very useful for reducing the budget and schedule, and improving the quality. The author shows an example of a subsystem that was analyzed in that framework, and presents the properties and patterns that were revealed by this analysis.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Learning analytics to improve writing skills for young children – an holistic approach (2017)

Purpose Due to the important role of orthography in society, the project called IDeRBlog presented in this paper created a web-based tool to motivate pupils to write text as well as to read and to comment on texts written by fellow students. In addition, IDeRBlog aims to improve student’s German orthography skills and supports teachers and parents with training materials for their students. The paper aims to discuss these issues. Design/methodology/approach With the aid of learning analytics, the submitted text is analyzed and special feedback is given to the students so that they can try to correct the misspelled words themselves. The teachers as well as the parents are benefiting from the analysis and exercises suggested by the system. Findings A recent study showed the efficiency of the system in form of an improvement of the students’ orthographic skills. Over a period of four months 70 percent of the students achieved a significant reduction of their spelling mistakes. Originality/value IDeRBlog is an innovative approach to improving orthography skills combining blogging and new media with writing and practice.
Long noncoding RNA-mediated activation of androgen receptor in prostate cancer (2014)

Remarkable progress has been made in molecular characterization of prostate cancer (PCa) with continued innovations in high throughput technologies evaluating human cancer.123 Since the completion of the Human Genome Project it has been estimated that only about 1.5%–2% of our genome codes for proteins. Various genome-wide approaches, e.g. the ENCODE project, revealed that a much larger percent of the genome is transcribed as non-protein coding (nc) RNA, including long noncoding (lnc) RNA (over 200 bps long). Although the biological roles of lncRNA (the ‘dark matter of the genome’) are not nearly as well-understood as the protein coding mRNAs, it is increasingly clear that they play important roles in almost every aspects of biology, including cancer biology.45 This is exemplified by recent genome-wide association studies revealing that over 80% of cancer-associated single nucleotide polymorphisms (SNPs) are in noncoding regions of the genome.
Amputation Versus Limb‐Salvage Surgery in Patients with Osteosarcoma: A Meta‐analysis (2016)

LSS results in higher 5-year survival rates and better functional outcomes as indicated by MSTS scores in patients with limb osteosarcomas.
Identifying Heart Failure Patients at High Risk for Near-Term Cardiovascular Events With Serial Health Status Assessments (2007)

In heart failure outpatients, serial health status assessments with the KCCQ can identify high-risk patients and may prove useful in directing the frequency of follow-up and the intensity of treatment.
ChemInform Abstract: NOVEL COMPLEXES OF RHODIUM(I) CONTAINING BRIDGING SULFUR DIOXIDE LIGANDS (1979)

Abstract Das durch Behandlung einer Aceton‐ oder Methylenchlorid‐Lösung des chloridverbrückten Komplexes (I) mit SO, gebildete p‐SO2‐Derivat (IIa) wird durch Elementaranalyse, chemische Reaktionen (mit N 2 zu (I), mit CO zum bekannten Analogen (IIb)) und IR‐ sowie NMR‐spektroskopisch charakterisiert.
Optimising the timing of whooping cough immunisation in mums (OpTIMUM) through investigating pertussis vaccination in pregnancy: an open-label, equivalence, randomised controlled trial (2023)

The Thrasher Research Fund and the National Immunisation Schedule Evaluation Consortium through the National Institute for Health and Care Research policy research programme.
Advanced separation technology for flue gas cleanup. Quarterly technical report {number_sign}6, [July--September 1993] (1993)

The objective of this work is to develop a novel system for regenerable SO{sub 2} and NO{sub x} scrubbing of flue gas that focuses on a novel method for regeneration of spent SO{sub 2} scrubbing liquor and novel chemistry for reversible absorption of NO{sub x}. High efficiency hollow fiber contractors (BFC) are proposed as the devices for scrubbing the SO{sub 2} and NO{sub x}. The system will remove more than 95% of the SO{sub x} and more than 75% of the NO{sub x} from flue gases typical of pulverized coal-fired power plants at a cost at least 20% less than combined wet limestone scrubbing of SO{sub x} and selective catalytic reduction of NO{sub x}. The process will make only marketable byproducts. The approach is to reduce the capital cost using high efficiency hollow fiber devices for absorbing and desorbing the SO{sub 2} and NO{sub x}. New process chemistry is introduced to minimize well-known problems with SO{sub 2} and NO{sub x} absorption and desorption. The novel chemistry for scrubbing NO{sub x} will consist of water soluble phthalocyanine compounds invented by SRI and polymeric forms of Fe{sup ++} complexes similar to traditional NO{sub x} scrubbing media. Past work with the phthalocyanine compounds shows that these compounds bind NO and NO{sub 2} reversibly and with no interference from O{sub 2}, CO{sub 2}, SO{sub 2}, or other components of flue gas. The arrangement of the absorbers in cassette (stackable) form so that the NO{sub x} absorber can be on top of the SO{sub x} absorber. This arrangement is possible only because of the high efficiency of the hollow fiber scrubbing devices. This cassette (stacked) arrangement makes it possible for the SO{sub 2} and NO{sub x} scrubbing chambers to be separate without incurring the large ducting and gas pressure drop costs necessary if a second conventional absorber vessel were used. There will be separate liquor loops to deconvolute the chemical complexity of simultaneous SO{sub 2}/NO{sub x} scrubbing.
A Strategy for Detection of Viruses in Groundwater by PCR (1999)

We evaluated the use of the PCR for detection of enteric viruses in groundwater. To do this, we used an improved sample-processing technique and a large-volume amplification protocol. The objective of this study was to use advanced molecular techniques to develop a rapid and simple method which can be used by the water industry for detection of viral contamination in a variety of water samples. The strategy described here fulfills the water industry's need for a rapid, reliable, easily performed method for analyzing groundwater for virus contamination. Viruses were detected after concentration from at least 400 gallons (1,512 liters) of water by a filter adsorption and elution method, which resulted in a concentrate containing viruses. A total of 150 samples were analyzed by performing cell culture assays for enteroviruses and by performing reverse transcription PCR (RT-PCR) analyses for enteroviruses, hepatitis A virus, and rotavirus. Thirteen samples (8.7%) produced cellular cytopathic effects when the Buffalo green monkey cell line was used. When primers specific for enteroviruses were used in RT-PCR, 40 of 133 samples (30.1%) tested positive for the presence of enterovirus RNA. When hepatitis A virus-specific primers were used, 12 of 139 samples (8.6%) were considered positive for the presence of hepatitis A viral RNA. The RT-PCR analysis performed with rotavirus-specific primers identified 18 of 130 samples (13.8%) that were positive for rotavirus RNA sequences. Our sample-processing technique and large-volume PCR protocol (reaction volume, 300 microliter) resulted in sufficient removal or dilution of inhibitors so that more than 95% of the samples could be assayed by PCR. Because of its sensitivity for detecting viral nucleic acid sequences, PCR analysis should produce more positive results than cell culture analysis. Since either cell culture analysis or PCR can reveal only a "snapshot" of the quality of the groundwater being sampled, PCR seems to be a desirable rapid initial screening tool.
Transfemoral transcatheter aortic-valve replacement should be preferred over surgery in most intermediate-risk patients (2016)

Commentary on: Leon MB, Smith CR, Mack MJ, et al., PARTNER 2 Investigators. Transcatheter or surgical aortic-valve replacement in intermediate-risk patients. N Engl J Med 2016;374:1609–20[OpenUrl][1][CrossRef][2][PubMed][3]. Evidence derived from randomised clinical trials support transcatheter aortic valve replacement (TAVR) as a choice for patients with aortic stenosis with a prohibitive surgical risk and as a valid alternative therapy for those at high-risk of surgical mortality. Owing to increases in operator experience as well as improvements with transcatheter techniques and devices associated with reduction in procedural complications, TAVR has been progressively extended to less risky patients,1 despite the lack of rigorous clinical-trial assessment of this expansion. In the Placement of Aortic Transcatheter Valves 2 (PARTNER-2) Cohort A randomised trial, safety and effectiveness of TAVR with a lower-profile second-generation valve system were compared with conventional surgical aortic valve replacement (SAVR) in patients with intermediate-risk clinical … [1]: {openurl}?query=rft.jtitle%253DN%2BEngl%2BJ%2BMed%26rft.volume%253D374%26rft.spage%253D1609%26rft_id%253Dinfo%253Adoi%252F10.1056%252FNEJMoa1514616%26rft_id%253Dinfo%253Apmid%252F27040324%26rft.genre%253Darticle%26rft_val_fmt%253Dinfo%253Aofi%252Ffmt%253Akev%253Amtx%253Ajournal%26ctx_ver%253DZ39.88-2004%26url_ver%253DZ39.88-2004%26url_ctx_fmt%253Dinfo%253Aofi%252Ffmt%253Akev%253Amtx%253Actx [2]: /lookup/external-ref?access_num=10.1056/NEJMoa1514616&link_type=DOI [3]: /lookup/external-ref?access_num=27040324&link_type=MED&atom=%2Febmed%2F21%2F5%2F173.atom
Reduced-dimension multiuser detection (2012)

We explore several reduced-dimension multiuser detection (RD-MUD) structures that significantly decrease the number of required correlation branches at the receiver front-end, while still achieving performance similar to that of the conventional matched-filter (MF) bank. RD-MUD exploits the fact that the number of active users is typically small relative to the total number of users in the system and relies on ideas of analog compressed sensing to reduce the number of correlators. We first develop a general framework for both linear and nonlinear RD-MUD structures. We then present theoretical performance analysis for two specific detectors: the linear reduced-dimension decorrelating (RDD) detector, which combines subspace projection and thresholding to determine active users and sign detection for data recovery, and the nonlinear reduced-dimension decision-feedback (RDDF) detector, which combines decision-feedback orthogonal matching pursuit for active user detection and sign detection for data recovery. The theoretical performance results for both detectors are validated via numerical simulations.
Driving micro-optical imaging systems towards miniature camera applications (2010)

Up to now, multi channel imaging systems have been increasingly studied and approached from various directions in the academic domain due to their promising large field of view at small system thickness. However, specific drawbacks of each of the solutions prevented the diffusion into corresponding markets so far. Most severe problems are a low image resolution and a low sensitivity compared to a conventional single aperture lens besides the lack of a cost-efficient method of fabrication and assembly. We propose a microoptical approach to ultra-compact optics for real-time vision systems that are inspired by the compound eyes of insects. The demonstrated modules achieve a VGA resolution with 700x550 pixels within an optical package of 6.8mm x 5.2mm and a total track length of 1.4mm. The partial images that are separately recorded within different optical channels are stitched together to form a final image of the whole field of view by means of image processing. These software tools allow to correct the distortion of the individual partial images so that the final image is also free of distortion. The so-called electronic cluster eyes are realized by state-of-the-art microoptical fabrication techniques and offer a resolution and sensitivity potential that makes them suitable for consumer, machine vision and medical imaging applications.
New Thiolate−Cobalt(II) Complexes for Catalytic Chain Transfer Polymerization of Methyl Methacrylate (2004)

TEST 02 - Elsevier's Scopus, the largest abstract and citation database of peer-reviewed literature. Search and access research from the science, technology, medicine, social sciences and arts and humanities fields.
CC-chemokine ligand 18 is a useful biomarker associated with disease activity in IgG4-related disease (2017)

CC-chemokine ligand 18 is a useful biomarker associated with disease activity in IgG4related disease IgG4-related disease (IgG4-RD) is a systemic disorder characterised by elevated serum IgG4 levels, tissue infiltration by IgG4 + plasma cells and severe fibrosis. 1 2 However, biomarkers for IgG4-RD disease activity are lacking. 3 A recent report demonstrated that CC-chemokine ligand 18 (CCL18) was a substantial biomarker for fibrotic diseases. 4 Here, we investigated the correlation between serum CCL18 levels and clinical features of patients with IgG4-RD.