gebhart/patrepeval huggingface dataset:
Factors influencing the choice of an orbital propulsion system for geostationary satellites (1974)

In this report the requirements of orbit control of geostationary communications satellites are investigated. A comparison between chemical and electrical propulsion is made for mission lives up to I5 years. The mass of electrical propulsion is lower than of chemical syetems, even when mass penalties for the low reliability of the ion thrusters and the generation of electric energy are taucen into account. Tho free inclination drift orbit is an alternative to the high demands of the north south stationkeeping, but different pointing control and antenna steering is necessary. The influence of the orbit control system on the attitude control is discussed. The study was performed in connection with a definition study of a double gimballed momentum tdieel, triiere realistic disturbance torques due to the orbit control system had to be estimated.
Analysis of systems development project risks (2009)

Information systems development projects are a significant expenditure of time, effort and money for many enterprises. Historically it has been estimated that 50-80% of projects fail to achieve their objectives for a variety of reasons. Researchers have identified numerous factors associated with system development failure. In this paper, we first synthesize the vast research regarding systems development risk factors and provide a framework that illustrates interactions between risk factors. The framework was used to develop an open-ended questionnaire that was answered by an inter-industry group of experienced systems development engineers and project managers. Analysis of their reports indicates that experienced professionals perceive that all risk factors (technical, resource, etc.) ultimately derive from organizationally-oriented factors, to be solved with organizational responses. This holistic viewpoint of risk assessment is counter to that of systems professionals more involved in day-to-day development decision making. For these developers, risks are more likely to be characterized as fitting into traditional discrete categories. This apparent dichotomy of risk importance was further investigated through an intra-organizational study which directly assessed how professionals recognize and treat risks in the development process. Results illustrate that a successful project environment may be characterised as one in which all systems professionals maintain a holistic view of organizational risk and that organizational culture, as opposed to experience, may predicate such an environment. Implications and future research directions are discussed.
A multimedia contents management system based on a metadata-net in home network (2008)

The aim of this paper is to propose a metadata-net as ontology to make a relation with similar metadata by analyzing structure and semantics of multimedia content metadata. Also, it is to suggest a multimedia contents management system based on a metadata-net (M <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> SM) as a methodology to provide integrated services for managing and searching various multimedia contents created and stored in home network-accessible consumer electronics (CEs). The proposed system helps users, who use a mobile device outside home, search and view highly relevant multimedia contents. When user wants to search some multimedia contents by metadata, M <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> SM provides query extension and modification and restriction using metadata-net in order to reduce increasing searching time caused by traversing unnecessary CEs in home network. The proposed system was implemented on a home server that acts as a gateway for establishing connections between home network and Internet. It supports various standards about home network and controls CEs to manage and search multimedia contents. In this way, M <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> SM reduces the search results delivered to mobile devices from home network, so power efficiency of mobile devices increase because CPU and network usage are declined.
Dissolution of perfluorinated ion-containing polymers (1982)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDissolution of perfluorinated ion-containing polymersCharles R. Martin, Teresa A. Rhoades, and James A. FergusonCite this: Anal. Chem. 1982, 54, 9, 1639–1641Publication Date (Print):August 1, 1982Publication History Published online1 May 2002Published inissue 1 August 1982https://pubs.acs.org/doi/10.1021/ac00246a040https://doi.org/10.1021/ac00246a040research-articleACS PublicationsRequest reuse permissionsArticle Views1471Altmetric-Citations109LEARN 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
Structural Diversity in Metal−Organic Frameworks Derived from Binuclear Alkoxo-Bridged Copper(II) Nodes and Pyridyl Linkers (2008)

New coordination polymers have been obtained by reaction of alkoxo-bridged copper(II) dimers [Cu2(mea)2]2+ and [Cu2(pa)2]2+ (Hmea = monoethanolamine; Hpa = propanolamine) with divergent pyridyl-containing ligands that act as rigid linear exo-bidentate linkers [p-bis(4-pyridyl)benzene, bpbenz, bis(4-pyridyl)acetylene, bpac, 9,10-bis(4-pyridyl)anthracene, bpanth], as a flexible angular exo-bidentate ligand [bis-(4-pyridyl)disulfide, bpds] or as an exo-tridentate connector [tris(3-pyridyl)benzene, tpyb]. The single crystal X-ray structures of [Cu2(mea)2(bpbenz)(NO3)](NO3)·2.75CH3OH (1), [Cu2(mea)2(bpbenz)2](CF3SO3)2·0.5(bpbenz)·3CH3OH (2), [Cu2(pa)2(bpac)2](ClO4)2 (3), [Cu2(mea)2(bpanth)](CF3SO3)2] (4), [Cu2(mea)2(CH3OH)(H2O)(bpanth)(NO3)2]·CH3OH·H2O (5), [Cu2(mea)2(bpanth)2](ClO4)2·2.5CH3OH (6), [Cu2(mea)2(bpds)2](CF3SO3)2·2CH3OH (7), [Cu2(pa)2(bpds)2](BF4)2 (8), [Cu2(mea)2(tpyb)(ONO2)](NO3)·CH3OH (9), and [Cu2(mea)2(tpyb)(FBF3)](BF4)·CH3OH (10) are reported. Compound 4 exhibits a linear chain structure, while compounds 1, 2, 3, 5, 6, 7, and 8 incorporate extended two-dimensional (2-D) grids. In compound 2 the 2-D networks are disposed parallel to each other, while in compounds 3 and 6 interlocked three-dimensional (3-D) structures resulting from inclined interpenetration of the 2-D sheets are observed. Compounds 7 and 8 consist of layers that pack to give channels running through the solid-state structure. In 9 and 10, the tris(3-pyridyl)benzene ligand interacts with the binuclear nodes to give channels. The role of hydrogen-bonding and stacking interactions in sustaining the supramolecular solid-state architectures in these materials is discussed.
HOUSEHOLD PRODUCTION: A CULTURAL AND CROSS‐NATIONAL VIEW* (1980)

This paper aims to place household production in cross‐cultural and cross‐national perspective. It begins with brief comments on the meaning of household production and some assumptions about it. Then, in Part I of the paper, four important aspects of socio‐cultural context or environment are described: types of production by scale of social organization; non‐agricultural production and scale of economic development; sex and role differences in everyday work; and value shifts affecting family functions and productive behaviour. In Part II are presented illustrations of house‐hold production from different regions and cultures of the world, and in Part III, suggestions about measures of household production patterns, which may permit cross‐cultural comparisons.
Panappticon: Event-based tracing to measure mobile application and platform performance (2013)

Improving and optimizing user-perceived smartphone performance requires understanding device, system, and application behavior for real-world workloads. However, measuring such performance is challenging due to the multi-threaded, asynchronous programming paradigms used in modern applications and the multiple layers of hardware and software used to respond to user input events. We address this challenge with Panappticon, a lightweight, system-wide, fine-grained event tracing system for Android that automatically identifies critical execution paths in user transactions. Panappticon monitors the application, system, and kernel software layers and can identify performance problems stemming from application design flaws, underpowered hardware, and harmful interactions between apparently unrelated applications. We carried out a 14-user, one-month study of an Android smartphone system instrumented with Panappticon, which revealed a number of specific problems and areas for improvement that may be of interest to system designers, application developers, and device manufactures.
Antineoplastic Activity and Cytotoxicity of Flavones, Isoflavones, and Flavanones (1979)

Several hundred flavonoid derivatives, natural and synthetic, which have been tested in the screening program of the National Cancer Institute, have been examined for indications of structure-activity relationships which might exist among these compounds. No such relationships are apparent. In spite of occasional activity these compounds do not warrant further detailed pursuit as anti-tumor agents.
Conductive Electroactive Polymers: Intelligent Polymer Systems (2009)

Rapid advances in synthetic polymer science and nanotechnology have revealed new avenues of development in conductive electroactive polymers that take greater advantage of versatile class of materials' unique properties. This third edition of Conductive Electroactive Polymers: Intelligent POlymer Systems continues to provide an in-depth understanding of how to engineer dynamic properties in inherently conducting polymers from the molecular level.
Regulation of F-actin-dependent processes by the Abl family of tyrosine kinases (2003)

The F-actin cytoskeleton is a fundamental component of all eukaryotic cells. It provides force and stability and plays an integral role in a diverse array of cellular processes. The spatiotemporal regulation of F-actin dynamics is essential for proper biological output. The basic molecular machinery underlying the assembly and disassembly of filamentous actin is conserved in all eukaryotic cells. Additionally, protein tyrosine kinases, found only in multicellular eukaryotes, provide links between extracellular signals and F-actin-dependent cellular processes. Among the tyrosine kinases, c-Abl and its relative Arg are unique in binding directly to F-actin. Recent results have demonstrated a role for c-Abl in membrane ruffling, cell spreading, cell migration, and neurite extension in response to growth factor and extracellular matrix signals. c-Abl appears to regulate the assembly of F-actin polymers into different structures, depending on the extracellular signal. Interestingly, c-Abl contains nuclear import and export signals, and the nuclear c-Abl inhibits differentiation and promotes apoptosis in response to genotoxic stress. The modular structure and the nuclear-cytoplasmic shuttling of c-Abl suggest that it integrates multiple signals to coordinate F-actin dynamics with the cellular decision to differentiate or to die.
Ρ-Queries (2003)

This paper presents the notion of Semantic Associations as complex relationships between resource entities. These relationships capture both a connectivity of entities as well as similarity of entities based on a specific notion of similarity called r-isomorphism. It formalizes these notions for the RDF data model, by introducing a notion of a Property Sequence as a type. In the context of a graph model such as that for RDF, Semantic Associations amount to specific certain graph signatures. Specifically, they refer to sequences (i.e. directed paths) here called Property Sequences, between entities, networks of Property Sequences (i.e. undirected paths), or subgraphs of r-isomorphic Property Sequences.The ability to query about the existence of such relationships is fundamental to tasks in analytical domains such as national security and business intelligence, where tasks often focus on finding complex yet meaningful and obscured relationships between entities. However, support for such queries is lacking in contemporary query systems, including those for RDF.
RecipeScape (2018)

For cooking professionals and culinary students, understanding cooking instructions is an essential yet demanding task. Common tasks include categorizing different approaches to cooking a dish and identifying usage patterns of particular ingredients or cooking methods, all of which require extensive browsing and comparison of multiple recipes. However, no existing system provides support for such in-depth and at-scale analysis. We present RecipeScape, an interactive system for browsing and analyzing the hundreds of recipes of a single dish available online. We also introduce a computational pipeline that extracts cooking processes from recipe text and calculates a procedural similarity between them. To evaluate how RecipeScape supports culinary analysis at scale, we conducted a user study with cooking professionals and culinary students with 500 recipes for two different dishes. Results show that RecipeScape clusters recipes into distinct approaches, and captures notable usage patterns of ingredients and cooking actions.
Effect of fatigue, workload, and environment on patient safety in the pediatric intensive care unit (2007)

Fatigue, excessive workload, and the pediatric intensive care unit environment can adversely affect the performance of physicians and nurses working in the pediatric intensive care unit. The weight of the evidence suggests that these factors have the potential to contribute to medical error in the pediatric intensive care unit.
Digital watermarking using inter-block correlation (1999)

In this paper, we propose a new watermark technique which utilizes the inter-block correlation of DCT coefficients. The amount of modification, that is the strength of embedded watermark, depends on the local feature of an image such that the watermark can be strongly embedded in the region where signal distortion is perceptually less visible. This feature also makes difficult for pirate to predict the position in which the watermark signal is embedded, since the amount of modification varies in the image. Embedded watermark can be detected without the parameters used in embedding process nor the original image. The experimental results show that this technique is robust to JPEG compression and Gaussian noise.
Therapeutic activities of nitrothiazoles against trichomonads. (1987)

Certain nitrothiazole derivatives, such as niridazole (Ba 32644, Ambilhar), exert pronounced activities against several trichomonad strains when tested under anaerobic conditions comparable to those of the nitroimidazole derivatives. Few compounds of the nitrothiazole group, however, are markedly less active in vitro. The in vivo activity of the nitrothiazole derivatives as determined in mice infected subcutaneously with T. foetus, is as good as that of metronidazole. A nitrothiazole derivative with a laminar side chain is inactive in vivo after oral administration, although it shows pronounced antitrichomonad activity in vitro.
Syntheses of Polyesters and Polyanhydrides from Vanillin (1958)

リグニンのアルカリ酸化によってえられるバニリンを高分子化合物の合成原料として利用する目的でバニリンよりポリエステルおよびポリアンハイドライドの合成を試みた。バニリンより1,4-(2-メトキシフェノキシメチル) ベンゼン-4,4'-ジカルボン酸メチルを合成し,これをエチレングリコールと重縮合させてポリエステルをえた。このものは融点120～128℃,コハク色でやや脆く,僅かに可紡性が認められるにすぎなかった。比較のために合成したべンゼン環にメトキシ基のないポリエステルは融点236～245℃,白色で硬く可紡性も認められた。またバニリンよりω, ω'-ビス(2-メトキシ-4-アセトカルボキシフェノキシ)アルカンを合成し,これを減圧下に加熱して重縮合を行い,ポリアンハイドライドをえた。これらのポリマーはいずれもコハク色で非常に硬く, 可紡性も認められる。その融点はメチレン基の数(n) が2,3,4および5のものに対し,それぞれ208～220,162～175,160～172,122～140℃であり,とくにn=2の場合低温延伸も可能であった。
ChIP-Enrich: gene set enrichment testing for ChIP-seq data (2014)

Gene set enrichment testing can enhance the biological interpretation of ChIP-seq data. Here, we develop a method, ChIP-Enrich, for this analysis which empirically adjusts for gene locus length (the length of the gene body and its surrounding non-coding sequence). Adjustment for gene locus length is necessary because it is often positively associated with the presence of one or more peaks and because many biologically defined gene sets have an excess of genes with longer or shorter gene locus lengths. Unlike alternative methods, ChIP-Enrich can account for the wide range of gene locus length-to-peak presence relationships (observed in ENCODE ChIP-seq data sets). We show that ChIP-Enrich has a well-calibrated type I error rate using permuted ENCODE ChIP-seq data sets; in contrast, two commonly used gene set enrichment methods, Fisher's exact test and the binomial test implemented in Genomic Regions Enrichment of Annotations Tool (GREAT), can have highly inflated type I error rates and biases in ranking. We identify DNA-binding proteins, including CTCF, JunD and glucocorticoid receptor α (GRα), that show different enrichment patterns for peaks closer to versus further from transcription start sites. We also identify known and potential new biological functions of GRα. ChIP-Enrich is available as a web interface (http://chip-enrich.med.umich.edu) and Bioconductor package.
Alzheimer's Disease and Prion Protein (2013)

Alzheimer's disease (AD) is a devastating neurodegenerative disease with progressive loss of memory and cognitive function, pathologically hallmarked by aggregates of the amyloid-beta (Aβ) peptide and hyperphosphorylated tau in the brain. Aggregation of Aβ under the form of amyloid fibrils has long been considered central to the pathogenesis of AD. However, recent evidence has indicated that soluble Aβ oligomers, rather than insoluble fibrils, are the main neurotoxic species in AD. The cellular prion protein (PrP(C)) has newly been identified as a cell surface receptor for Aβ oligomers. PrP(C) is a cell surface glycoprotein that plays a key role in the propagation of prions, proteinaceous infectious agents that replicate by imposing their abnormal conformation to PrP(C) molecules. In AD, PrP(C) acts to transduce the neurotoxic signals arising from Aβ oligomers, leading to synaptic failure and cognitive impairment. Interestingly, accumulating evidence has also shown that aggregated Aβ or tau possesses prion-like activity, a property that would allow them to spread throughout the brain. In this article, we review recent findings regarding the function of PrP(C) and its role in AD, and discuss potential therapeutic implications of PrP(C)-based approaches in the treatment of AD.
The role of epidermal growth factor receptor (EGFR) in male reproductive tract differentiation: stimulation of EGFR expression and inhibition of Wolffian duct differentiation with anti-EGFR antibody. (1996)

We have shown previously that epidermal growth factor (EGF) plays a role in testosterone-dependent fetal Wolffian duct differentiation. To assess the role of EGF further, we examined EGF receptor (EGFR) expression during Wolffian duct differentiation and determined whether inhibition of EGFR results in inhibition of Wolffian duct differentiation. Using a polyclonal anti-EGFR antibody in the Western blot analysis, we have detected an immunoreactive band at the expected 180-kDa size, the molecular size for the EGFR protein, in the 18-day fetal male reproductive tract. The mouse 3T3 cell line, used as a positive control, also produced an immunospecific band at the same region. The intensity of the immunoreactive 180-kDa band in the 18-day male reproductive tract significantly decreased after pretreatment of the antibody with the 3T3 cell extract. Nonimmune serum produced no band at the 180- kDa region, suggesting EGFR specificity of the 180-kDa band. The level of the 180-kDa EGFR protein was found to be higher in the 18-day male than in the female reproductive tract. Testosterone increased expression of the EGFR level in the 18-day masculinized female reproductive tract, and it induced Wolffian duct morphogenesis. Under in vitro culture conditions, the anti-EGFR antibody prevented Wolffian duct differentiation, induced by the fetal testis, suggesting a direct role of EGFR in male reproductive tract differentiation. No such effect was found when tested with nonimmune serum. Anti-EGFR also blocked the development of the Wolffian duct in the female explant, induced by exogenous EGF. Thus, a role of EGFR mediating the effect of EGF during male reproductive tract differentiation is demonstrated.
Development of Annealing-Free, Solution-Processable Inverted Organic Solar Cells with N-Doped Graphene Electrodes using Zinc Oxide Nanoparticles (2018)

An annealing-free process is considered as a technological advancement for the development of flexible (or wearable) organic electronic devices, which can prevent the distortion of substrates and damage to the active components of the device and simplify the overall fabrication process to increase the industrial applications. Owing to its outstanding electrical, optical, and mechanical properties, graphene is seen as a promising material that could act as a transparent conductive electrode for flexible optoelectronic devices. Owing to their high transparency and electron mobility, zinc oxide nanoparticles (ZnO-NP) are attractive and promising for their application as charge transporting materials for low-temperature processes in organic solar cells (OSCs), particularly because most charge transporting materials require annealing treatments at elevated temperatures. In this study, graphene/annealing-free ZnO-NP hybrid materials were developed for inverted OSC by successfully integrating ZnO-NP on the hydrophobic surface of graphene, thus aiming to enhance the applicability of graphene as a transparent electrode in flexible OSC systems. Chemical, optical, electrical, and morphological analyses of ZnO-NPs showed that the annealing-free process generates similar results to those provided by the conventional annealing process. The approach was effectively applied to graphene-based inverted OSCs with notable power conversion efficiencies of 8.16% and 7.41% on the solid and flexible substrates, respectively, which promises the great feasibility of graphene for emerging optoelectronic device applications.