gebhart/patrepeval huggingface dataset:
Learning to rank for content-based image retrieval (2010)

In Content-based Image Retrieval (CBIR), accurately ranking the returned images is of paramount importance, since users consider mostly the topmost results. The typical ranking strategy used by many CBIR systems is to employ image content descriptors, so that returned images that are most similar to the query image are placed higher in the rank. While this strategy is well accepted and widely used, improved results may be obtained by combining multiple image descriptors. In this paper we explore this idea, and introduce algorithms that learn to combine information coming from different descriptors. The proposed learning to rank algorithms are based on three diverse learning techniques: Support Vector Machines (CBIR-SVM), Genetic Programming (CBIR-GP), and Association Rules (CBIR-AR). Eighteen image content descriptors(color, texture, and shape information) are used as input and provided as training to the learning algorithms. We performed a systematic evaluation involving two complex and heterogeneous image databases (Corel e Caltech) and two evaluation measures (Precision and MAP). The empirical results show that all learning algorithms provide significant gains when compared to the typical ranking strategy in which descriptors are used in isolation. We concluded that, in general, CBIR-AR and CBIR-GP outperforms CBIR-SVM. A fine-grained analysis revealed the lack of correlation between the results provided by CBIR-AR and the results provided by the other two algorithms, which indicates the opportunity of an advantageous hybrid approach.
Preparation and structural examination of a series of new, low-valent iron phosphine isocyanide complexes with bent carbon-nitrogen-carbon linkages (1987)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and structural examination of a series of new, low-valent iron phosphine isocyanide complexes with bent carbon-nitrogen-carbon linkagesWilliam D. Jones, Glenn P. Foster, and Jeanne M. PutinasCite this: Inorg. Chem. 1987, 26, 13, 2120–2127Publication Date (Print):July 1, 1987Publication History Published online1 May 2002Published inissue 1 July 1987https://doi.org/10.1021/ic00260a022Request reuse permissionsArticle Views202Altmetric-Citations20LEARN 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 InReddit PDF (998 KB) Get e-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Event Correlation Analytics: Scaling Process Mining Using Mapreduce-Aware Event Correlation Discovery Techniques (2015)

This paper introduces a scalable process event analysis approach, including parallel algorithms, to support efficient event correlation for big process data. It proposes a two-stages approach for finding potential event relationships, and their verification over big event datasets using MapReduce framework. We report on the experimental results, which show the scalability of the proposed methods, and also on the comparative analysis of the approach with traditional non-parallel approaches in terms of time and cost complexity.
Adhesion molecules in inflammatory bowel disease (1999)

Leukocyte–endothelial cell adhesion is an early and rate-limiting component of the intestinal lesions associated with inflammatory bowel disease. Adhesive interactions such as leukocyte rolling, adherence, and transendothelial migration are regulated by adhesion glycoproteins. Coordination of leukocyte recruitment is made possible by the mediator-specific, time-sensitive expression of adhesion glycoproteins on the surface of leukocytes and/or vascular endothelial cells. In this review, the different families of relevant adhesion molecules that participate in the coordinated process of leukocyte recruitment into areas of bowel inflammation are described and then discussed in terms of the pathophysiological alterations observed in inflammatory bowel disease. Finally, the major potential targets for therapeutic intervention against inflammation that relate to the process of leukocyte–endothelial cell adhesion, and more specifically to regulation of adhesion molecule expression, are considered.
A Case Study of Road Upheaval caused by Slope Movement, and Verification of Reinforcement using Real-Time Monitoring (2011)

암반비탈면의 활동에 의해 전방 도로부에 융기현상이 발생되었다. 국내의 대다수 비탈면은 암반으로 구성되어 있으므로 연구지역과 같이 암반비탈면 활동에 의한 도로 융기현상을 관찰하기는 쉽지 않다. 본 연구를 통해 구성암 풍화와 지질학적 약대 형성이 진행된 암반비탈면은 불연속면을 따른 기하학적인 붕괴보다는 전체 구성암의 원호활동 지배를 더 크게 받을 수 있음을 파악하였다. 또한, 수치해석을 통해 편암 등 이방성이 강한 암석이나 특정 방향의 불연속면이 비탈면의 안정성에 영향을 미칠 경우에는 연속체 해석에 편재절리모델을 혼합하여 해석을 수행하는 것이 암반비탈면의 연속체 해석 수행에 매우 유용함을 확인하였다. 현장조사와 안정해석 결과를 근거로 본 비탈면의 안정화를 위해 계단식옹벽과 앵커공법을 제안하였으며, 보강 완료 후에는 계측기를 설치하여 실시간 모니터링을 통해 적용 대책공법의 효과를 검증하였다. The movement of rock cut slopes may result in upheaval of an adjacent road. Because most cut slopes consist of rock, road upheaval due to the movement of a cut slope is a rare phenomenon in Korea. We found that the movement of rock slopes which are heavily weathered and with strongly developed weak zones is governed by circular failure of the overall rock formation rather than by failure along discontinuities. The results of a numerical analysis revealed that the application of a ubiquitous joint model in a continuum analysis is appropriate for anisotropic rocks (e.g., schist) and for slopes for which the stability is influenced by a particular discontinuity. The results of a field investigation and numerical analyses suggest that retaining walls and anchors should be used to stabilize rock slopes and that real-time monitoring equipment should be installed to assess the reinforcing effect of the remedial measures.
Electronic commerce: the impact of the Internet on sales practices in the car industry (2000)

E-commerce and Internet technologies are fundamentally changing the way companies do business. While much attention is paid to the profitability among the dot-coms and the viability of the new business models, there is much less focus on the impact of the Internet on the work practices of actual workers. As companies are developing new business models, existing work processes have to be adapted to the new environment in which communication is mediated by e-mail and the Internet. This new environment is marked by ubiquitous information access, asynchronous information exchange, and written communication. Depending on the extant information asymmetry and the degree and nature of the contact that workers need with their colleagues, customers, and trading partners, these attributes present both opportunities and challenges. In sales, for instance, a work context characterized by high equivocality, the increasing reliance on lean media like e-mail presents considerable challenges for sales people whose ability to “read” customers is curtailed. In this paper, we report on a two part study that investigates (1) the impact of Internet technologies on the work practices of car sales associates and (2) the antecedents of Internet technology use and sales performance among car sales associates engaged in Internet sales. In the first part of the study, we interviewed car sales associates engaged in Internet sales and, based on their description of the changes in their work lives, we developed a model to predict the use of Internet technology for car sales and sales performance. Since the online sales environment offers sales associates less information about their customers, our central hypothesis is that the initial assumptions with which sales associates enter into a sales encounter play a very significant role in predicting the outcome of the Internet-mediated sales encounter. We test this and other hypotheses using data collected via a national survey of 155 randomly selected sales associates. We’re assuming the sale; we’re assuming you’re acquiring the car, we’re assuming we’re at the right price, and if we do everything we need to do correctly, you’ll buy it from us. And we don’t do anything to deter from that assumption until you, the customer, puts us off that track. [QQ, 04/05/00]
Human Umbilical Cord Mesenchymal Stem Cell Therapy for Patients with Active Rheumatoid Arthritis: Safety and Efficacy (2013)

This study was designed to assess the safety and efficacy of human umbilical cord mesenchymal stem cells (UC-MSCs) in the treatment of rheumatoid arthritis (RA). In this ongoing cohort, 172 patients with active RA who had inadequate responses to traditional medication were enrolled. Patients were divided into two groups for different treatment: disease-modifying anti-rheumatic drugs (DMARDs) plus medium without UC-MSCs, or DMARDs plus UC-MSCs group (4×10(7) cells per time) via intravenous injection. Adverse events and the clinical information were recorded. Tests for serological markers to assess safety and disease activity were conducted. Serum levels of inflammatory chemokines/cytokines were measured, and lymphocyte subsets in peripheral blood were analyzed. No serious adverse effects were observed during or after infusion. The serum levels of tumor necrosis factor-alpha and interleukin-6 decreased after the first UC-MSCs treatment (P<0.05). The percentage of CD4(+)CD25(+)Foxp3(+) regulatory T cells of peripheral blood was increased (P<0.05). The treatment induced a significant remission of disease according to the American College of Rheumatology improvement criteria, the 28-joint disease activity score, and the Health Assessment Questionnaire. The therapeutic effects maintained for 3-6 months without continuous administration, correlating with the increased percentage of regulatory T cells of peripheral blood. Repeated infusion after this period can enhance the therapeutic efficacy. In comparison, there were no such benefits observed in control group of DMARDS plus medium without UC-MSCs. Thus, our data indicate that treatment with DMARDs plus UC-MSCs may provide safe, significant, and persistent clinical benefits for patients with active RA.
Balloon kyphoplasty for treatment of sacral insufficiency fractures. Report of three cases. (2005)

Sacral insufficiency fracture is a painful injury, for which no effective treatment currently exists. The objective of this study was to report on the clinical outcomes and technical aspects of balloon kyphoplasty, which was used in three patients with this injury. Three elderly women with intractable pain from sacral insufficiency fractures were treated with polymethyl methacrylate (PMMA) injections into the sacrum by using a modified balloon kyphoplasty procedure. The visual analog scale pain score improved by four points in each case. Functional status was improved and analgesic medication requirements were decreased in all three patients. There were no complications associated with the procedure. Because of the unique anatomy of the sacrum, it was difficult to monitor instrument placement and PMMA injection by using conventional fluoroscopy. BrainLAB image guidance was used in one case, and was helpful in guiding instrument placement and assuring accurate PMMA deposition at the fracture site. Balloon kyphoplasty may be a treatment alternative in selected patients with sacral insufficiency fractures. BrainLAB image guidance may offer some advantages over conventional fluoroscopy with regard to the monitoring of instrument placement and PMMA injection.
Efficient gathering of correlated data in sensor networks (2005)

In this paper, we design techniques that exploit data correlations in sensor data to minimize communication costs (and hence, energy costs) incurred during data gathering in a sensor network. Our proposed approach is to select a small subset of sensor nodes that may be sufficient to reconstruct data for the entire sensor network. Then, during data gathering only the selected sensors need to be involved in communication. The selected set of sensors must also be connected, since they need to relay data to the data-gathering node. We define the problem of selecting such a set of sensors as the connected correlation-dominating set problem, and formulate it in terms of an appropriately defined correlation structure that captures general data correlations in a sensor network.We develop a set of energy-efficient distributed algorithms and competitive centralized heuristics to select a connected correlation-dominating set of small size. The designed distributed algorithms can be implemented in an asynchronous communication model, and can tolerate message losses. We also design an exponential (but non-exhaustive) centralized approximation algorithm that returns a solution within O(log n) of the optimal size. Based on the approximation algorithm, we design a class of efficient centralized heuristics that are empirically shown to return near-optimal solutions. Simulation results over randomly generated sensor networks with both artificially and naturally generated data sets demonstrate the efficiency of the designed algorithms and the viability of our technique -- even in dynamic conditions.
On Favorable Alloying Elements for Mg-Zr System Alloys (1959)

When one of the components Ag, Bi, Ca, Cd, Ce, Cu, Li, Misch metal, Sn, Ti and Zn were contained in magnesium as alloying elements, the solubility of Zr in the melt of such a magnesium alloy and the effects of soluble Zr in the molten alloy on the cast structures were studied and the possibility of production of intermetallic compounds by the alloying elements and Zr over the solubility limit in the molten alloys was investigated by X-ray analysis. The results obtained were as follows: The solubility of Zr at 700° was about 0.5∼0.6% in Mg-Ag-Zr, 0.45% in Mg-Bi-Zr, 0.5% in Mg-Ca-Zr, 0.55∼0.6% in Mg-Cd-Zr, 0.5∼055% in Mg-Ce-Zr, 0.4∼0.5% in Mg-Cu-Zr, 0.35∼0.5% in Mg-Li-Zr, 0.55∼0.6% in Mg-Misch metal-Zr, 0.45% in Mg-Ti-Zr, 0.75∼0.8% in Mg-Zn-Zr and considerably decreased in Mg-Sn-Zr by increase of Sn. The grain-refining effect of Zr on the cast structure depended on the quantity of Zr soluble in the molten magnesium alloy. Intermetallic compounds of the alloying elements and Zr were obtained as Mg-Cu-Zr and Mg-Sn-Zr when Zr was over the solubility limit in the molten alloy.
Glycosamineglycan Sulfate as Acrosomal Reaction-Inducing Factor of Follicular Fluid (1984)

Follicular fluid from different mammalian species possesses two factors responsible for the induction of capacitation: a sperm-stimulating factor and an acrosomal reaction-inducing factor. The glycosamineglycan-sulfate (GAGs) extracted from pig follicular fluid induce acrosome reaction in pig spermatozoa which exhibit no morphological difference between the GAGs-induced reaction and the natural one. Acrosomal reaction commenced 30 min after the addition of GAGs and depended on GAGs concentration reaching 80% of acrosomal reacted spermatozoa after 6 hr of incubation with 7 mg of GAGs/ml. Chemical composition differs with the chemical data that characterize them as proteoglycans since those we obtained were practically protein free (2%). Another difference resides in the uronic acid content, which is almost twofold higher (59%). Electron microscope observations of the acrosomal reacted spermatozoa revealed that the addition of 10 mg/ml of trypsin soybean inhibitor did not interfere with any of the acrosomal reaction steps. The active capacitating factors may also originate from the follicular fluid released into the genital tract during ovulation.
Dielectric Elastomer Spring Roll Actuators for a Portable Force Feedback Device (2006)

In this paper, we present a new portable force feedback device for surgery simulations. Dielectric elastomer spring roll linear actua tors for this device were manufactured, and characterized via pas sive tensile tests and active isometric tests. The actuators exhibited a maximum force of 7.2 N, and a maximum elongation of 31%. Due to the high driving voltage, electrical safety issues were also considered. The results showed that sufficient electrical safety can be provided to the user. Two prototypes were built, which practi cally showed functionalities of the actuator and the proposed force feedback concept with actuators connected between the fingers.
Crystallization and properties of 5-keto-d-gluconate reductase from Gluconobacter suboxydans. (1979)

5-Keto-n-gluconate reductase (EC 1.1.1.69) was purified and crystallized for the first time from cell-free extract of Gluconobacter suboxydans IFO 12528. Purification of the enzyme was successfully performed by column chromatography on DEAE-Sephadex A-50, bluedextran Sepharose 4B, followed by pH gradient chromatography on DEAE-Sephadex A-50. The enzyme was purified about 1200-fold with an overall yield of 40%. The enzyme was much stabilized against heating and storage by adding either D-gluconate or 5-keto-n-gluconate. 2-Keto-D-gluconate had no effect to stabilize the enzyme and the enzyme was confirmed to be a different entity from 2-keto-D-gluconate reductase stabilized by gluconate or 2-keto-n-gluconate but not 5-keto-D-gluconate. It was also confirmed with crystalline enzyme that 5-keto-D-gluconate reductase is considered to have a function to reduce intracellular 5-keto-D-gluconate to D-gluconate in combination with regeneration of NADP.
Les instances de pouvoir des 500 premiers groupes français (2004)

Dans une approche sociologique des instances de pouvoir, cette étude porte sur la place des femmes mandataires dans les 500 premiers groupes français et les sociétés rattachées sur la période 1998-2003. Cette place reste marginale, le plafond de verre empêchant les femmes d’accéder aux postes les plus prestigieux, les cantonnant dans des mandats de second plan, dans des entreprises de petite taille tant en termes de chiffre d’affaires que d’effectifs, et dans des secteurs dits « féminins ». Nous analysons les raisons de ce déficit de présence féminine dans les étatsmajors des sociétés et groupes et essayons de comprendre pourquoi ce monde du pouvoir économique reste si « androcentrique » et si fermé aux femmes.
The impact of health insurance market reforms on market competition. (2000)

Small-group market reforms have not harmed market competition and may have improved competition in several respects. However, these reforms do not alter the fundamental orientation of competitive insurance markets, which is to focus on risk selection factors and techniques to the extent feasible.
Excitation frequencies of ions confined in a quadrupole field with quadrupole excitation (2000)

Resonant quadrupole excitation of ions confined in a radio frequency quadrupole field with angular frequency omega by an excitation signal with angular frequency omega has been investigated theoretically. It is shown that the spectrum of excitation frequencies has considerable structure which corresponds to different orders of excitation. The resonance condition for orders K = 1,2,3,... in the general case has been obtained as omega n(K) = (omega/K) magnitude of n + beta, -infinity < n < infinity, where K is the order of the resonance and beta and n determine the unperturbed oscillation frequencies. Resonance curves for ion oscillations with different stability parameters beta = 0.1, 0.5, and 0.9 have been constructed by means of direct numerical solution of the equations of motion. The trajectories of ion motion under resonant excitation of different orders have been investigated. For orders K of two and higher, the ion motion shows a beat character with an overall increase of amplitude with time. The stability diagram for ion motion in a mass filter in the presence of quadrupole excitation has been constructed.
Heterogeneous “Organoclick” Derivatization of Polysaccharides: Photochemical Thiol‐ene Click Modification of Solid Cellulose (2010)

A simple and direct method for derivatization of solid polysaccharides is presented. The novel methodology is based on the combination of organic acid-catalyzed esterification or etherification and photochemical thiol-ene click derivatization of a heterogeneous polysaccharide. The solid cellulose was "organoclick" modified with aryl, alkyl and polyester groups, respectively. The modification allows for a highly modular and metal free surface modification of solid polysaccharides.
Membrane proteins: always an insoluble problem? (2016)

Membrane proteins play crucial roles in cellular processes and are often important pharmacological drug targets. The hydrophobic properties of these proteins make full structural and functional characterization challenging because of the need to use detergents or other solubilizing agents when extracting them from their native lipid membranes. To aid membrane protein research, new methodologies are required to allow these proteins to be expressed and purified cheaply, easily, in high yield and to provide water soluble proteins for subsequent study. This mini review focuses on the relatively new area of water soluble membrane proteins and in particular two innovative approaches: the redesign of membrane proteins to yield water soluble variants and how adding solubilizing fusion proteins can help to overcome these challenges. This review also looks at naturally occurring membrane proteins, which are able to exist as stable, functional, water soluble assemblies with no alteration to their native sequence.
Perspectives on Knowledge Mobilization: An Introduction to the Special Issue (2016)

IntroductionWhat is knowledge mobilization? From our perspective, simply put, knowledge mobilization helps make research useful to society, and does so in a way that solution seeking can itself inform the research agenda. If you were to look for a common definition, however, you could easily become discouraged by the different terms reflecting slightly different variations on