gebhart/patrepeval huggingface dataset:
Robust two-dimensional principal component analysis via alternating optimization (2013)

To extract two-dimensional principal components from image samples while being insensitive to outliers, we propose a robust model for two-dimensional principal component analysis (robust 2D-PCA) by regularizing sparse penalty term. Moveover, we develop a novel iterative algorithm for robust 2D-PCA via alternating optimization, learning the projection matrices by bi-directional decomposition. To further speed up the iteration, we develop an alternating greedy approach, minimizing over the low-dimensional feature matrix and the sparse error matrix. Experimental results on dynamic background subtraction are evaluated to show the effectiveness of the proposed model, compared with conventional 2D-PCA and robust PCA algorithms.
Amplicon Sequencing of Plant Material Links Cotton Fleahopper to Host Plants (2023)

The cotton fleahopper (CFH), Pseudatomoscelis seriatus (Reuter), is an early season cotton pest that feeds on cotton terminals resulting in flower abortion, irregular plant growth, and delayed plant maturity. The CFH has been documented on over 160 host plants across 35 families. Identification of host plants was accomplished through observed presence on a plant in the field and/or controlled feeding studies under lab conditions. Because the CFH is a generalist, these results may not accurately represent the plants used by the CFH under natural conditions. We used amplicon sequencing to identify plant material potentially ingested by CFH nymphs. Control samples consisted of CFHs fed in the laboratory on horsemint, Monarda spp. Nymphs were also collected using a sweep net from fields dense with horsemint, croton (Croton spp.), or fields of mixed plant composition. We detected the correct plant family in control samples. BLAST (https://blast.ncbi.nlm.nih.gov/Blast.cgi) results from the sweep net samples categorized hits into seven different plant families, one of which may be a new feeding host for CFH. Based on these findings, amplicon sequencing may be useful to further understand the complex ecology of the CFH, which may ultimately improve management strategies for CFH.
Deep‐penetration heat flow probes raise questions about interpretations from shorter probes (2001)

More than 40% of the marine heat flow data collected since the early experiments of Sir Edward Bullard in 1949 were obtained using shallow penetration probes less than 5 m long [ Louden and Wright, 1989]. The common belief that these data are reliable enough to model deep‐seated thermal processes is supported by a few experiments in which heat flow measurements made in the Deep Sea Drilling Program (DSDP) and the Ocean Drilling Program (ODP) were compared to nearby surface heat flow measurements [e.g., Hyndman et al., 1984]. However, thermal measurements made with 18‐m penetrations recently collected on the northern flank of the South‐East Indian Ridge (SEIR) bring a new perspective to this belief. In the study area, measurements of heat flow taken at the surface ( 0–5 m) and measurements taken at greater depths (3–18 m) did not always concur. Investigating this lack of agreement will help address difficult questions about the interpretation of shallow penetration (&lt;5 m) marine heat flow measurements.
Effect of NO/sub 2/ and SO/sub 2/ alone and in combination on the productivity of field-grown soybeans (1982)

Investigations of effects on plants from single pollutants are numerous and provide useful determinations of phytoxicity levels; however, pollutants rarely occur alone, and field investigations of pollutant combinations are limited. Combustion processes which generate sulfur dioxide (SO/sub 2/) usually produce a mixture of nitrogen oxides (NO/sub x/), as demonstrated by ambient air monitoring data. In order to determine the effects of pollutant combinations on crop plants, field investigations were conducted in 1980 and 1981 using soybeans (Glycine max L.) exposed to SO/sub 2/ and NO/sub 2/ alone and in combination, in the presence of ambient ozone (O/sub 3/). Open-air field plots of soybeans were fumigated with SO/sub 2/ and NO/sub 2/ through a system of aluminum pipes suspended above the plant canopy, utilizing the ZAPS (Zonal Air Pollution System) design. After being released from the pipe, the pollutant gas concentrations decreased with distance downwind from the pipe as a result of normal turbulent dispersion. In both years of the study, the soybean plots were fumigated on 10 occasions during the pod-filling period for an average exposure time during fumigation of 3 hours. Mean concentrations during fumigation periods ranged from 0.13 to 0.42 ppM of SO/sub 2/ and 0.06 to 0.40more » ppM of NO/sub 2/. Results from both years of the experiment indicated that fumigations with NO/sub 2/ alone had no effect on seed yields. Exposures with SO/sub 2/ alone had no effect on yields in 1980 and decreased yields up to 6% in 1981. Combinations of SO/sub 2/ and NO/sub 2/ had a synergistic effect both years of the study and resulted in yield decreases ranging from 9 to 25%.« less
Identification of Fur-regulated genes in Actinobacillus actinomycetemcomitans (2006)

Actinobacillus actinomycetemcomitans is an oral pathogen that causes aggressive periodontitis as well as sometimes life-threatening, extra-oral infections. Iron regulation is thought to be important in the pathogenesis of A. actinomycetemcomitans infections and, consistent with this hypothesis, the fur gene has recently been identified and characterized in A. actinomycetemcomitans. In this study, 14 putatively Fur-regulated genes were identified by Fur titration assay (Furta) in A. actinomycetemcomitans, including afuA, dgt, eno, hemA, tbpA, recO and yfe - some of which are known to be Fur regulated in other species. A fur mutant A. actinomycetemcomitans strain was created by selecting for manganese resistance in order to study the Fur regulon. Comparisons between the fur gene sequences revealed that nucleotide 66 changed from C in the wild-type to T in the mutant strain, changing leucine to isoleucine. The fur mutant strain expressed a nonfunctional Fur protein as determined by Escherichia coli-based ferric uptake assays and Western blotting. It was also more sensitive to acid stress and expressed higher levels of minC than the wild-type strain. minC, which inhibits cell division in other bacterial species and whose regulation by iron has not been previously described, was found to be Fur regulated in A. actinomycetemcomitans by Furta, by gel shift assays, and by RT-qPCR assays for gene expression.
Pre- and post-storm hurricane monitoring via data-driven SAR-based analytics (2021)

Ursa Space Systems (Ursa Space) has developed an approach to effective pre- and post-storm monitoring utilizing its extensive virtual constellation of synthetic aperture radar (SAR) satellites and its advanced analytics platform. SAR provides a reliable day or night earth observation data source that can cut through cloud cover for a clear view of an area with very limited atmospheric effects on image collection. To begin the process of hurricane monitoring, Ursa Space provides an initial understanding of a vulnerable region by examining a time series of low-resolution SAR data and generating historical change maps, which we then analyze to detect trends and infer significant change events. Based on these preliminary results, we task high-resolution SAR data for further investigation. Ahead of the hurricane, we strategically task imagery using expected storm tracks and other weather-forecasting data to provide a baseline for postevent flood mapping. After the storm passes, we continue to collect data to monitor the region, generating fused data layers describing storm damage and standing water with additional land-use land-cover (LULC) context. With specially tasked imagery, we can also examine soil moisture and other detailed ground disturbance through interferometric SAR (InSAR). The feasibility and significance of Ursa Space’s approach to pre- and post-storm monitoring is demonstrated through retrospective analysis of two storms, Hurricane Irma and Hurricane Dorian.
The Programmable Calculator - a Significant Contribution (1975)

This paper studies a need in the community for programmable calculators. Design objectives determined from the apparent need are developed and the technology used to fulfill the need discussed. Some areas and examples of application are noted.
The effects of engine oil additives on valve train wear (1989)

Abstract Preventing valve train wear in automotive engines is one of the most important properties of an engine oil. However, the influence of engine oil additives on valve train wear has not been sufficiently clarified. In this investigation, the antiwear performance of additives (such as ashless dispersants, metallic detergents and zinc dithiophosphate ‐ ZDTP) and the influence of the interaction of the additives were evaluated. Secondly, metallic detergents were considered. An overbased calcium sulphonate and an overbased phenate were found to have good anti‐scuffing performance when evaluated in engine tests and in Falex wear tests. However, from the results of four‐ball tests, these additives did not appear to have many extreme pressure properties. From surface analyses, it was determined that a calcium carbonate film was formed on the sliding surface of the Falex test piece, and this film provided good protection against wear. Finally, the interaction of ZDTP, succinimides and calcium detergents and their influence on valve train wear were studied. The decomosition temperature of ZDTP increased with certain additives. including the succinimide. As a result, scuffing was more prone, at temperatures below those increased temperatures. Also, changes in additive concentration on the sliding surface, due to competitive adsorption, altered the antiwear performance of the oil.
Dynamic Combinatorial Chemistry (2006)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDynamic Combinatorial ChemistryPeter T. Corbett, Julien Leclaire, Laurent Vial, Kevin R. West, Jean-Luc Wietor, Jeremy K. M. Sanders, and Sijbren OttoView Author Information Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom Cite this: Chem. Rev. 2006, 106, 9, 3652–3711Publication Date (Web):August 10, 2006Publication History Received20 February 2006Published online10 August 2006Published inissue 1 September 2006https://pubs.acs.org/doi/10.1021/cr020452phttps://doi.org/10.1021/cr020452presearch-articleACS PublicationsCopyright © 2006 American Chemical SocietyRequest reuse permissionsArticle Views26943Altmetric-Citations1682LEARN 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 SUBJECTS:Genetics,Kinetics,Mixtures,Peptides and proteins,Receptors Get e-Alerts
Gamma-interferon enhances expression of Class I MHC antigens in the weakly HLA+ human choriocarcinoma cell line BeWo, but does not induce MHC expression in the HLA- choriocarcinoma cell line Jar. (1985)

PHA-activated lymphocyte supernatants and high doses of affinity-purified human gamma-interferon enhance the expression of apparently normal Class I histocompatibility antigens in a malignant human trophoblast cell line that expresses low amounts of these antigens under normal culture conditions. Another human choriocarcinoma cell line, Jar, which is normally HLA-, did not respond to this treatment. This system provides a model in which to study further the regulation and effects of MHC antigen expression in cells of trophoblastic origin.
ChemInform Abstract: New Generation of Plasma‐Sprayed Mullite Coatings on Silicon Carbide. (1995)

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.
NAVICULO-CUNEIFORM FUSION IN THE TREATMENT OF FLAT FOOT (1953)

1. Radiological investigation of cases of flat foot shows that they form three distinct anatomical types according to the precise level of the break in the arch. 2. When the break occurs at the naviculo-cuneiform joint alone, fusion of this joint in normal alignment should correct the deformity. 3. The results of operation on forty-six feet are analysed. Eighty-two per cent proved satisfactory. Failures are discussed and are considered avoidable by careful selection and operative technique.
Selective patterning using deposition and etch: case of area selective deposition (2021)

3D and nanoscale dimensions make patterning extremely difficult to perform. In the past, patterning via plasma etching was a success thanks to the very good capacity of this process to etch one preferential material over the others: selective etching. Next step for advanced patterning will be to add a selective deposition step in addition to the etch one. Good examples are area selective deposition and topographical selective deposition. They will be discuss in this presentation
Efficient alignment for vehicle make and model recognition (2014)

This paper presents a make and model recognition system for passenger vehicles. We propose a two-step efficient alignment mechanism to account for view point changes. The 2D alignment problem is solved as two separate one dimensional shortest path problems. To avoid the alignment of the query with the entire database, reference views are used. These views are generated iteratively from the database. To improve the alignment performance further, use of two references is proposed: a universal view and type specific showcase views. The query is aligned with universal view first and compared with the database to find the type of the query. Then the query is aligned with type specific showcase view and compared with the database to achieve the final make and model recognition. We report results on database of 1500 vehicles with more than 250 makes and models.
Development for General-purpose Autonomous Mobile Robot Platform (2018)

We are developing the general-purpose autonomous mobile robot platform. In order to develop a general-purpose platform, it is thought effective to examine the common component and individual component for two or more target domains. The target domain is aimed at three, physical distribution cart carry, the shelf space check of a store, and nursing home watch, from the domain where the robot is not used. As the common component, the intelligent unit which realizes self-position recognition and person detection is developed, using an in-vehicle image recognition processor as a common unit. Moreover, the drive unit and individual unit which fill each demand are developed at two or more spots of a distribution warehouse, a retail store, and a nursing facility. The outline is introduced in this paper.
“D-DIMER LEVEL AS PREDICTIVE BIOMARKER FOR COVID-19 DISEASE SEVERITY: AN ANALYSIS” (2021)

Objectives- COVID-19 is now a global pandemic and it was rst reported in Wuhan, China, in December 2019. In is observed in few critically ill patients that that he course of disease is rapid and with in short period of time the clinical condition may worsen. Deranged coagulation prole, including elevation of D-dimer level are identied during course of COVID-19 infection. Raised serum level of D dimer is associated with increased mortality in COVID19 Patients. Methods- The data of 128 COVID 19 patients was retrospectively collected and analyzed. After categorization of patients into two groups the optimal cutoff value of D-dimer on admission was evaluated by receiver operator characteristic (ROC) curve. Result- Out of total 128 enrolled in the study, 81(63.28%) patients were in non severe group and 47(36.72%) patients in severe group and mean value of D-dimer in non severe group and severe group was 2.17 (2.78)mg/L, and 11.26 (7.56)mg/L respectively. The area under the curve (AUC) of ROC curve was 0.886 (95% CI 0.818-0.954; p value&lt;0.0001) with optimal threshold value was 2.345 mg/L. Conclusion- In COVID-19 patients D-dimer value ≥ 2.345 mg/L can be used to effectively predict the severity of disease. A signicant association has been found in raised D-dimer level and disease severity.
Histological studies of myocardium zones irradiated with Nd–YAG laser (1985)

Histological investigation of the dog's myocardium performed 7 and 25 days after irradiation with different doses of Nd-YAG laser show that the damage zone has the shape of a hollow sphere with minor changes in cardiomyocytes in the central part of the sphere. The small blood vessels in the irradiated zone remained undamaged as well. A tentative explanation of the physical process that leads to this type of coagulation zone is given.
Structures of interpolymer complexes based on carboxymethylcellulose and urea-formaldehyde resin (2005)

Interaction of carboxymethylcellulose with polymeric condensation products of urea and formaldehyde was studied. The structure of the final product was found to depend on the nature and structure of the components involved in the interaction.
Variations in Velopharyngeal Structure in Adults With Repaired Cleft Palate (2018)

Although significant differences were evident in the cleft palate group, individuals displayed normal resonance. These findings suggest that a wide variability in velopharyngeal anatomy can occur in the presence of normal resonance, particularly for those with repaired cleft palate. Future research is needed to understand how anatomic variability impacts function, such as during speech.
Influence of electron-hole scattering on the plasma thermalization in doped GaAs (1991)

The cooling of an electron-hole plasma in bulk n- and p-type doped GaAs is calculated without assuming complete thermalization between electrons and holes. Electron-hole scattering and nonequilibrium optical phonons are included in the simulation. In n-doped GaAs, we show that at low excitation density (i.e., when the photogenerated plasma density is small compared to the donor density), the electrons are at first colder than the holes but heat up quickly and subsequently stay close to the hole temperature. At low density in p-doped GaAs, however, the holes stay cold and the electron cooling is mainly controlled by electron-hole scattering.
Morphology engineering - Osmolality and its effect on Aspergillus niger morphology and productivity (2011)

Through the introduction of the versatile Morphology number, this study provides the means for a desirable characterization of fungal morphology and demonstrates its relation to productivity. Furthermore, osmolality as a fairly new parameter in process engineering is introduced and found to affect fungal morphology and productivity. Osmolality might provide an auspicious and reliable approach to increase the productivity in industrial processes. Because of the predictable behavior fungal morphology showed in dependence of osmolality, a customization of morphology for process needs seems feasible.
Edmundo O´Gorman y la historia nacional (2000)

Edmundo O’Gorman’s essays on Mexican national history, spanning three decades, are analyzed in this article beginning by his study on Fray Servando Teresa de Mier (1945), and ending with Mexico. El trauma de suhistoria (1977). This article studies his intellectual sources, topics, and the historian's eagerness to subtly undermine the nation’s historic myths. O’Gorman’s frequent use of abstractions is stressed, together with the fact that he often eluded citing evidence as well as including notes and references. Regarding interpretation, it is held that the notion of “the great American dichotomy” explains the liberals’ and federalists’ Utopian attempts to imitate the United States of America, and the conservatives’ and monarchists’ attempts to perpetuate Hispanic and colonial legacy. It does not consider French and liberal Spanish influences, which have an undisputed relevance in Hispanic America.
A Pathogen-Induced Wheat Gene Encodes a Protein Homologous to Glutathione-S-Transferases (1991)

Winter wheat (Triticum aestivum) shows local, induced resistance against the plant-pathogenic fungus Erysiphe graminis f. sp. tritici following exposure to the nonpathogen E. g. f. sp. hordei. The onset of this resistance has been shown to be correlated with the activation of putative defense genes, and cDNA clones representing transcripts of induced genes have been obtained (P. Schweizer, W. Hunziker, and E. Mösinger, Plant Molecular Biology 12:643-654, 1989). We have cloned and sequenced a gene corresponding to one of these cDNAs, WIR5. Sequence analysis indicated that this gene contains three exons and encodes a protein of 229 amino acids. S1 mapping showed that transcripts homologous to this gene are at least 20 times more abundant in leaves infected 14 hr earlier with E. g. f. sp. hordei than in control leaves. Sequence comparison showed that the WIR5 gene product is highly homologous to glutathione-S-transferases (GSTs; EC 25.1.18) of maize. This, together with the fact that the intron positions of both the wheat gene and the maize GSTI gene are conserved, suggests that the cloned pathogen-induced gene, named GstA1, encodes a wheat glutathione-S-transferase.
A study of the French Vowels Through The Main Constriction of the Vocal Tract Using an Acoustic-to-articulatory inversion method (2003)

This paper presents a study of the articulatory properties of French vowels using an acoustic-to-articulatory inversion method. The advantage of such an approach is that all the possible articulatory configurations can be studied independently of any articulatory preferences linked with a given speaker. Furthermore, it bypasses the issue of acquiring a vast amount of articulatory data by medical imaging techniques. The inversion method exploits an articulatory codebook, the acoustic precision of which is constant whatever the articulatory region considered. Since the inversion is performed from the first three formants of vowels to recover the seven parameters of Maeda&amp;apos;s model the null space of the articulatory to acoustic mapping is explored to recover all the possible articulatory shapes. Applied to French vowels this method allows the different places of articulation to be determined.