Journal articles on the topic 'Analytic pairing'
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Rahmalia, Dinita, Awawin Mustana Rohmah, and Nuril Lutvi Azizah. "Analytic Hierarchy Process (AHP) dan Fuzzy TOPSIS pada Pemilihan Himpunan Pairing Terpilih dari Jadwal Penerbangan." JATI UNIK : Jurnal Ilmiah Teknik dan Manajemen Industri 4, no. 1 (October 30, 2020): 1. http://dx.doi.org/10.30737/jatiunik.v4i1.922.
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In the flight industry, there are two highest costs such as fuel cost and crew cost. The crew cost is affected by pairings selected from flight schedule. This research will explain about selecting the set of selected pairings using Analytic Hierarchy Process (AHP) and Fuzzy Technique for Order Performance by Similarity to Ideal Solution (Fuzzy TOPSIS). Before using either Fuzzy AHP or Fuzzy TOPSIS, it will be formed collection of the set of selected pairings using greedy algorithm. After collection of the set of selected pairings is formed, then we determine goal and criteria. The goal is selecting the set of selected pairings from some alternatives. For each the set of selected pairings, there are some criterions such as the number of deadhead, the number of pairing A2, the number of pairing A3, the number of pairing A4, the number of pairing A5, and the number of pairing A6. Based on simulation results, both AHP and Fuzzy TOPSIS can select and give the rank of priority in entire the set of selected pairings. Pada industri maskapai penerbangan, terdapat dua biaya yang sangat besar yaitu biaya bahan bakar dan biaya kru. Biaya kru dipengaruhi oleh pairing yang terpilih dari jadwal penerbangan. Pada penelitian ini akan dilakukan pemilihan himpunan pairing terpilih menggunakan metode Analytic Hierarchy Process (AHP) dan Fuzzy Technique for Order Performance by Similarity to Ideal Solution (Fuzzy TOPSIS). Sebelum menggunakan AHP atau Fuzzy TOPSIS, akan dibentuk kumpulan dari himpunan pairing terpilih menggunakan greedy algorithm. Setelah kumpulan himpunan pairing terpilih terbentuk, maka dibentuk goal dan kriteria. Goal adalah memilih himpunan pairing terpilih dari beberapa alternative. Pada setiap himpunan pairing yang terpilih, terdapat beberapa kriteria seperti jumlah deadhead, jumlah pairing A2, jumlah pairing A3, jumlah pairing A4, jumlah pairing A5, dan jumlah pairing A6. Berdasarkan hasil perhitungan, metode AHP dan Fuzzy TOPSIS dapat memilih dan memberi peringkat prioritas pada pemilihan himpunan pairing terpilih.
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ZHANG, S. S. "PAIRING CORRELATIONS WITH RESONANT CONTINUUM EFFECT IN THE RMF + ACCC + BCS APPROACH." International Journal of Modern Physics E 18, no. 08 (September 2009): 1761–72. http://dx.doi.org/10.1142/s0218301309013828.
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The relativistic mean field (RMF) + analytic continuation in the coupling constant (ACCC) + Bardeen–Cooper–Schrieffer (BCS) approach is first presented to describe exotic nuclei by taking into account the resonant continuum effect in pairing correlations. Constant pairing strength is used in BCS approximation. Resonance parameters and wave functions are extracted from effective ACCC approach within the framework of the self-consistent RMF theory. The pairing energies, pairing correlation energies, binding energies, two-neutron separation energies, neutron rms radii, and neutron densities for neutron-rich even–even Ni isotopes are explored in the RMF + ACCC + BCS approach with NL3 effective interaction. It shows that the results are in good agreement with those of other theoretical approaches.
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YAN, XIN-ZHONG. "PAIRING-FLUCTUATION EFFECT IN QUASI-TWO-DIMENSIONAL SUPERCONDUCTIVITY." International Journal of Modern Physics B 17, no. 03 (January 30, 2003): 319–36. http://dx.doi.org/10.1142/s021797920301598x.
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We present a self-consistent approach to deal with the pairing-fluctuation effects in quasi-two-dimensional superconducting systems. Besides the Cooper pairs in the Bose–Einstein condensate, there are pairs occupying the excited states, which results in the predominant fluctuations. The low-lying excited states are the collective modes. On the basis of ladder-diagram approximation, we treat the single particles and the pairs on an equal-footing manner. The Green's function of single particles is obtained as an analytic solution to a cubic equation. The bosonic degrees of freedom are relevant to the pseudogap physics in the high-T c cuprates. The superconducting order parameter and the transition temperature are substantially reduced from the values of the mean-field theory. The calculated phase boundary of superconducting state can reasonably describe the experiment data for cuprates.
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CINI, MICHELE, ADALBERTO BALZAROTTI, RAFFAELLA BRUNETTI, MARIA GIMELLI, and GIANLUCA STEFANUCCI. "CANONICAL TRANSFORMATION OF THE HUBBARD MODEL AND W = 0 PAIRING: COMPARISON WITH EXACT DIAGONALIZATION RESULTS." International Journal of Modern Physics B 14, no. 25n27 (October 30, 2000): 2994–99. http://dx.doi.org/10.1142/s0217979200002508.
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We have recently developed a canonical transformation of the Hubbard and related models, valid for systems of arbitrary size and for the full plane; this is particularly suited to study hole pairing. In this work we show that exact diagonalization results of the one band Hubbard model for small clusters with periodic boundary conditions agree well with the analytical ones obtained by means of our canonical transformation. In the presence of a pairing instability, the analytic approach allows us to identify the Cooper pairs. They are W = 0 pairs, that is, singlet two-hole eigenstates of the Hubbard Hamiltonian with vanishing on-site repulsion. Indeed, we find that the Coulomb interaction effects on W = 0 pairs are dynamically small, and repulsive or attractive, depending on the filling.
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FORRESTER, P. J. "SOLVABLE MODEL OF THE PAIRING TRANSITION IN A TWO-DIMENSIONAL ONE-COMPONENT PLASMA/METAL INTERFACE MODEL." International Journal of Modern Physics A 07, supp01a (April 1992): 303–15. http://dx.doi.org/10.1142/s0217751x92003823.
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An exactly solvable model of the pairing transition from a conductive to an insulator phase in a two-dimensional, log-potential Coulomb system is given. The system considered is the one-component plasma of positive particles without a neutralizing background near a metal interface, which is coupled to an external (non-Coulombic) potential. A complete analytic description of the equilibrium properties of the two phases and the transition is provided, and this is compared with the expected analytic properties of the two-component log-potential Coulomb gas in one and two-dimensions.
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He, Jianhua, Siqi Tao, Yang Deng, Libin Chen, and Zhiying Mou. "Research on Multi-Sensor Resource Dynamic Allocation Auction Algorithm." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 37, no. 2 (April 2019): 330–36. http://dx.doi.org/10.1051/jnwpu/20193720330.
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This paper designs a multi-sensor resource dynamic allocation method based on auction algorithm. Tasks are prioritized according to the needs of the engineering field. Task priority is used as the basis for multi-sensor resource allocation order, taking into account the target's threat value and information needs. The sensor and task pairing function is established and used to measure the sensor resource dynamic allocation, we also use Analytic Hierarchy Process to determine the weight of each performance parameter in the pairing function (such as detection probability, intercept probability, positioning accuracy, tracking accuracy, recognition probability, etc.). The auction algorithm is improved by adding resource dynamic allocation constraints, which not only ensures the continuous execution of the target task, but also improves the dynamic allocation efficiency of multi-sensor resources. The simulation results show that the allocation method in this paper is scientific and reasonable.
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Douglas, Ronald, and Krysztof Wojciechowski. "Analytic Realization of Relative K-Homology on Manifolds with Boundary and Pairing with K-Cohomology." Zeitschrift für Analysis und ihre Anwendungen 8, no. 6 (1989): 485–94. http://dx.doi.org/10.4171/zaa/369.
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GOLDMAN, T. "STERILE NEUTRINOS IN A 6 × 6 MATRIX APPROACH." International Journal of Modern Physics A 22, no. 27 (October 30, 2007): 4967–78. http://dx.doi.org/10.1142/s0217751x07038323.
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Quark-lepton symmetry invites consideration of the existence of sterile neutrinos. Long ago, we showed that this approach predicts large neutrino mixing amplitudes. Using a Weyl spinor approach, we show, in an analytic example, how this, and pseudo-Dirac pairing, can develop within a reduced rank version of the conventional see-saw mechanism, from small intrinsic mixing strengths. We show by numerical examples that mixing of active and sterile neutrinos can affect the structure of oscillations relevant to extraction of neutrino mixing parameters from neutrino oscillation data.
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CALLEGARI, AGNESE, ENRICO PERFETTO, GIANLUCA STEFANUCCI, and MICHELE CINI. "INTERPLANAR HOPPING OF W = 0 BOUND PAIRS." International Journal of Modern Physics B 17, no. 04n06 (March 10, 2003): 567–72. http://dx.doi.org/10.1142/s0217979203016248.
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CuO 4 is the simplest of a class of repulsive Hubbard model clusters which (under well specified conditions) display W = 0 pairing; remarkably, ane also observes superconducting quantization of a magnetic flux orthogonal to the plane. Thus one can use CuO 4 units connected by weak O-O and/or Cu-Cu links to model interplanar coupling and c-axis superconductivity in Cuprates. A new analytic approximation supported by preliminary numerical evidence suggests that in such models one can study the propagation of bound pairs and also the superconducting flux quantization in a 3d geometry.
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Carey, A. L., V. Gayral, J. Phillips, A. Rennie, and F. A. Sukochev. "Spectral Flow for Nonunital Spectral Triples." Canadian Journal of Mathematics 67, no. 4 (August 1, 2015): 759–94. http://dx.doi.org/10.4153/cjm-2014-042-x.
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AbstractWe prove two results about nonunital index theory left open in a previous paper. The first is that the spectral triple arising from an action of the reals on a C*-algebra with invariant trace satisûes the hypotheses of the nonunital local index formula. The second result concerns the meaning of spectral flow in the nonunital case. For the special case of paths arising from the odd index pairing for smooth spectral triples in the nonunital setting, we are able to connect with earlier approaches to the analytic definition of spectral flow
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Chiriu, Daniele, Francesca Assunta Pisu, Pier Carlo Ricci, and Carlo Maria Carbonaro. "Application of Raman Spectroscopy to Ancient Materials: Models and Results from Archaeometric Analyses." Materials 13, no. 11 (May 28, 2020): 2456. http://dx.doi.org/10.3390/ma13112456.
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Numerous experimental techniques of analysis find applications in many branches of the archaeometry. Among them, Raman spectroscopy carved out a niche in the field of diagnostic and conservation of cultural heritage. The exceptional ability to predict and discover the structural properties of materials set for Raman spectroscopy, an exclusive role among the analytic techniques, is further boosted when it is coupled with mathematical or statistical models able to deepen the studied phenomena. In this work, we present a review of recent studies where pairing Raman spectroscopy and mathematical models allowed achieving important results in the case of potteries, porcelains, ancient and modern paper, ancient jewelry, and pigment degradation. The potentialities of this approach are evidenced and analyzed in detail.
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Tang, Jian. "The Study on Financial Management Assessment based on Analytical Hierarchy Process." Applied Mechanics and Materials 66-68 (July 2011): 1786–91. http://dx.doi.org/10.4028/www.scientific.net/amm.66-68.1786.
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Analytical hierarchy process method is proposed to assess financial management to realize the accurate financial management assessment in the paper. Analytic hierarchy process is a kind of hierarchical structure, which can estimate the impact of each index by determining the membership between up layer and bottom layer and gaining the weights of each index relative to assessment object. Assessment indexes of structural levels are established by analyzing the correlation of each index. Characteristic vector of the pairing comparison matrix which can be taken as the weights of assessment factors for financial management is established based on analytical hierarchy process. The weights provide a basis for rationality of finance management.
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Brown, Jeffrey M., and Miroslav Kolesik. "Properties of Stark Resonant States in Exactly Solvable Systems." Advances in Mathematical Physics 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/125832.
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Properties of Stark resonant states are studied in two exactly solvable systems. These resonances are shown to form a biorthogonal system with respect to a pairing defined by a contour integral that selects states with outgoing wave boundary conditions. Analytic expressions are derived for the pseudonorm, dipole moment, and coupling matrix elements which relate systems with different strengths of the external field. All results are based on explicit calculations made possible by a newly designed integration method for combinations of Airy functions representing resonant eigenstates. Generalizations for one-dimensional systems with short-range potentials are presented, and relations are identified which are likely to hold in systems with three spatial dimensions.
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Andrews, A. S., J. E. L. Bishop, I. H. Clayton, J. S. Mitchell, and T. M. Searle. "Comparison of Monte Carlo and analytic results for nearest-available-neighbor pairing in one, two, and three dimensions." Physical Review B 41, no. 10 (April 1, 1990): 7224–26. http://dx.doi.org/10.1103/physrevb.41.7224.
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Mandala, Andrean, Nunung Widyaningsih, and Bambang Purwoko Kusumo Bintoro. "Key factors of success in the application of last planner system in construction work." International Journal of Engineering & Technology 9, no. 3 (July 25, 2020): 636. http://dx.doi.org/10.14419/ijet.v9i3.30760.
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This study aims to identify what factors are the key to the successful implementation of the Last Planner System in construction work based on existing journals to be applied in the construction environment and determine the priority weight / key factors of success from the questionnaire results from experts with the Analytic method Hierarchy Process. The method used in this study uses the Analytic Hierarchy Process to find priority weights and software uses Expert Choice. From the results of the analysis obtained Key Success Factors in construction work, namely as many as 10 criteria where stakeholder criteria with the highest priority weight with a global weight of 0.2279 which have a value of consistency ratio below 0.1 or 10%, ie 0.08 or 8%, then an evaluation of the comparison pairing between criteria is consistent and as many as 24 sub-criteria where the sub-criteria of stakeholder support for the implementation of LPS with the highest priority weighting with a global weight of 0.1812 which has a consistency ratio below 0.1 or 10% ie 0.07 or 7%, then an assessment of pairwise comparisons between sub criteria are consistent.
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Geske, Christian. "Algebraic intersection spaces." Journal of Topology and Analysis 12, no. 04 (January 9, 2019): 1157–94. http://dx.doi.org/10.1142/s1793525319500778.
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We define a variant of intersection space theory that applies to many compact complex and real analytic spaces [Formula: see text], including all complex projective varieties; this is a significant extension to a theory which has so far only been shown to apply to a particular subclass of spaces with smooth singular sets. We verify existence of these so-called algebraic intersection spaces and show that they are the (reduced) chain complexes of known topological intersection spaces in the case that both exist. We next analyze “local duality obstructions,” which we can choose to vanish, and verify that algebraic intersection spaces satisfy duality in the absence of these obstructions. We conclude by defining an untwisted algebraic intersection space pairing, whose signature is equal to the Novikov signature of the complement in [Formula: see text] of a tubular neighborhood of the singular set.
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Britto, Ilma A. Goulart de Souza. "Analytical-Behavioral Approach to the Study of the Anxiety Phenomenon and its Implications." Fragmentos de Cultura 28, no. 2 (June 18, 2018): 90. http://dx.doi.org/10.18224/frag.v28i2.5480.
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This article offers an analysis of the anxiety according to some of the principle approaches analytic-behavioral. The article makes reference to experimental procedure with the pairing of aversive stimulus with neutral stimulus that elicits physiological responses and behavioral changes, from classic experiment of operant literature. Also the problem of the person undergoing aversive stimulation can not correctly discriminate why these reactions occur in his body. And therefore respond to so apprehensive their own bodily responses, which ultimately perpetuate them.Abordagem Analítico-Comportamental para o Estudo do Fenômeno Ansiedade e suas ImplicaçõesEste artigo oferece uma análise de ansiedade de acordo com alguns dos princípios da abordagem comportamental. O artigo faz referência aos estímulos aversivos que eliciam respostas fisiológicas, a partir de experimento clássico da literatura operante, e o problema de a pessoa não conseguir discriminar corretamente o porquê de essas reações ocorrerem em seu corpo. E consequentemente, responder de modo apreensivo às suas próprias respostas corporais, o que acaba por perpetuá-las.
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Tokar, Jacob J., Charlotte N. Stahlfeld, Jamie M. Sperger, David J. Niles, David J. Beebe, Joshua M. Lang, and Jay W. Warrick. "Pairing Microwell Arrays with an Affordable, Semiautomated Single-Cell Aspirator for the Interrogation of Circulating Tumor Cell Heterogeneity." SLAS TECHNOLOGY: Translating Life Sciences Innovation 25, no. 2 (January 26, 2020): 162–76. http://dx.doi.org/10.1177/2472630319898146.
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Comprehensive analysis of tumor heterogeneity requires robust methods for the isolation and analysis of single cells from patient samples. An ideal approach would be fully compatible with downstream analytic methods, such as advanced genomic testing. These endpoints necessitate the use of live cells at high purity. A multitude of microfluidic circulating tumor cell (CTC) enrichment technologies exist, but many of those perform bulk sample enrichment and are not, on their own, capable of single-cell interrogation. To address this, we developed an affordable semiautomated single-cell aspirator (SASCA) to further enrich rare-cell populations from a specialized microwell array, per their phenotypic markers. Immobilization of cells within microwells, integrated with a real-time image processing software, facilitates the detection and precise isolation of targeted cells that have been optimally seeded into the microwells. Here, we demonstrate the platform capabilities through the aspiration of target cells from an impure background population, where we obtain purity levels of 90%–100% and demonstrate the enrichment of the target population with high-quality RNA extraction. A range of low cell numbers were aspirated using SASCA before undergoing whole transcriptome and genome analysis, exhibiting the ability to obtain endpoints from low-template inputs. Lastly, CTCs from patients with castration-resistant prostate cancer were isolated with this platform and the utility of this method was confirmed for rare-cell isolation. SASCA satisfies a need for an affordable option to isolate single cells or highly purified subpopulations of cells to probe complex mechanisms driving disease progression and resistance in patients with cancer.
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Rune, Christina J. Birke, Morten Münchow, and Federico J. A. Perez-Cueto. "Systematic Review of Methods Used for Food Pairing with Coffee, Tea, Wine, and Beer." Beverages 7, no. 2 (June 17, 2021): 40. http://dx.doi.org/10.3390/beverages7020040.
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The current article is aimed at systematically reviewing the research methods used for food pairing with coffee, tea, wine, and beer. The primary aim of this review was to elucidate the state-of-the-art methods used for analysing food and beverage pairings with coffee, tea, wine, and beer; secondarily, to identify the basis of the selection criteria; and lastly, the method used to evaluate those pairings. The search was performed in three databases: Web of Science, ScienceDirect, and Scopus. Criteria for inclusion were studies with an experimental design, a descriptive analysis (DA), and/or hedonic consumer analysis of beverage and food pairing. The outcome had to be measured on a hedonic Likert scale, a line scale, a just about right (JAR), or a modified JAR scale or other relevant scale measurement method for the given attribute. A total of 24 studies were included in this review—the majority aimed at finding good food and beverage pairings. Most pairings were based on suggestions from experts on popular/common, similar origin, or quality of beverages and foods. The outcomes were measured in several different scales, precluding a direct comparison. The 24 articles used in this review did not provide a so-called “golden standard” of the pairing method. Only three articles provided a more scientifically based approach to investigate why a food and beverage pairing is perceived as a good match, using aromatic similarity, the primary taste, and the sensation of koku as their experimental factors.
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MOJUMDER, M. A. "SPIN AND CHARGE PSEUDOGAPS FOLLOWING KONDO EFFECT IN THE NORMAL STATE OF THE UNDERDOPED CUPRATES." International Journal of Modern Physics B 13, no. 27 (October 30, 1999): 3205–17. http://dx.doi.org/10.1142/s0217979299002964.
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A study of experimental results on various parameters of underdoped cuprates in the normal state combined with analytic calculation of Hall parameters assuming a two-channel Kondo model for the system leads to the conclusion that the spin and charge pseudogaps are, respectively, a Kondo hybridisation gap and an incipient d-wave "superconducting" gap. The former occurs due to resonant scattering of doped holes by the magnetic Cu 2+ ions while the latter occurs due to incoherent Cooper pairing of Kondo-compensated quasi-itinerant Cu d-orbitals via exchange of spin excitations. We comment on the essential similarity of the high-T c and heavy fermion superconductors and a certain crossover at lower temperatures from the two-channel to the one-channel Kondo model. An expression has been derived for the Kondo contribution to the spectral function of the charge pseudogap. We believe this work unravels the long-standing conundrum of the high-T c cuprates.
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Purol, Mariah, Rebekka Weidmann, Louis Hickman, Jeewon Oh, and William Chopik. "A MULTIPRONGED APPROACH TO MODELING DYADIC SIMILARITY AMONG MIDDLE-AGED AND OLDER ADULTS." Innovation in Aging 6, Supplement_1 (November 1, 2022): 105–6. http://dx.doi.org/10.1093/geroni/igac059.418.
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Abstract One surprising finding in the field of dyadic influence is the minimal influence that couple personality similarity has for life and relational well-being. Most research has focused on pairing of symmetric psychological characteristics on a broad, trait level (i.e., one person’s extraversion with their partner’s extraversion) across romantic partners. However, many more cross-trait combinations are possible, and facet-level traits may provide additional information that is traditionally lost. Among 1,366 middle-age and older couples, we examined similarity effects of personality facets on health, life, and relational well-being using difference scores, response surface analyses, and machine learning approaches. Across analytic and operational approaches, partner and similarity effects were relatively small in magnitude, although additional variance was explained for some outcomes (e.g., relationship satisfaction) than others (e.g., memory, chronic illnesses). Our findings constitute one of the more comprehensive examinations to date and suggest even the modest effects of personality similarity may be overstated.
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J.M.N. Marikkar. "Distinguishing Coconut Oil from Coconut Paring Oil using Principle Component Analysis of Fatty Acid Data." CORD 28, no. 1 (April 1, 2012): 5. http://dx.doi.org/10.37833/cord.v28i1.105.
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A study was carried out to distinguish coconut oil from coconut pairing oil by the application of principal component analysis (PCA) to fatty acid compositional and iodine value data. Five samples of ordinary coconut oil extracted from five different batches of copra and five samples of coconut pairing oil obtained from five batches of dried coconut pairings were employed. Fatty acid composition and iodine values of oil samples were determined individually and the data were analyzed statistically. PCA analysis showed that lauric and oleic acid contents and iodine value data are the most influencing parameters to discriminate coconut oil from coconut pairing oil. Hence, the application of PCA to fatty acid compositional and iodine value data was successful in distinguishing coconut oil from coconut pairing oil.
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Jain, Amit, and B. V. Babu. "Analysis of Process Interactions in Dynamic System Using Frequency Dependent RGA." Advanced Materials Research 403-408 (November 2011): 895–99. http://dx.doi.org/10.4028/www.scientific.net/amr.403-408.895.
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A frequency dependent approach to defining a dynamic relative gain array (DRGA) is discussed. The approach assumes the availability of a dynamic transfer function based process model for control loop pairing analysis. Two examples are considered: one in which the traditional RGA (based on steady-state gain matrix) gives the correct pairing recommendation and the other in which the traditional RGA suggests wrong pairings particularly in the frequency range of interest. The calculations pertaining to analysis of control loop pairing is performed using MATLAB (version 7.0.1). An inaccurate indication of the amount of interaction present is discussed. The first example uses 2x2 transfer function model [1] and the second one uses 3x3 transfer function model [2].
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Liu, Li, Lin Wei, and Zhi Hong Liu. "Finite Element Simulation of the Artificial Knee-Joints of Similar Type Pairing." Applied Mechanics and Materials 300-301 (February 2013): 243–47. http://dx.doi.org/10.4028/www.scientific.net/amm.300-301.243.
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The stress relationship between several pairings was studied through the contrastive contact analysis between the artifical knee-joints of the same type pairing and similar type pairing in different angles and conditions to expand the application of the existing artifical knee-joints. The result shows that, the maximal equivalent stresses of the artifical knee-joints of similar type pairing are more than those of the artifical knee-joints of the same type pairing generally. The law is especially clear in conditions of larger force. In conditions of walking on the flat ground and climbing the stairs, the stress growths between 4/3 pairing and 3/3 pairing are the largest in 10° , they are 18.3% and 14.5% respectively; the stress growths between 3/2.5 pairing and 3/3 pairing are the largest in 20° , they are 13.4% and 15% respectively.
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Dominguez, George, Cyrus Sholevar, Alexander Polo, John Roop, Anthony Campisi, Dmitry Gabrilovich, Frank J. Rauscher, and Amit Kumar. "The coupling of MDSCs with a computational analytic method to detect solid tumors." Journal of Clinical Oncology 36, no. 5_suppl (February 10, 2018): 24. http://dx.doi.org/10.1200/jco.2018.36.5_suppl.24.
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24 Background: Myeloid-derived suppressor cells (MDSCs) are key contributors in supporting tumor progression and tumor escape through their ability to suppress anti-tumor responses mediated through T cell and natural killer (NK) cell activity. Several studies have demonstrated their utility as indicators of tumor progression and possible predictors of clinical outcomes, but there is significant overlap with healthy individuals preventing discrete and accurate calls. The objective of our study was to create a non-invasive cancer detection assay that analyzes flow cytometry data in an objective method using an artificial neural network (NN) to distinguish between cancer patients (CPs) and healthy donors (HDs) based upon the flow cytometry profiles of MDSCs and other leukocytes. Methods: We used standard multiparametric flow cytometry techniques to immunophenotype MDSCs and other leukocytes found in the peripheral blood of 52 biopsy-confirmed CPs with solid tumors and 70 HDs. A series of NNs utilizing pattern recognition computational algorithms are then created using three data sets: 1) the training set - this ‘teaches’ the two output categories of cancer and not cancer, 2) the validation set – this uses backpropagation to improve the accuracy of the trained networks, and 3) the testing set – this is used to rank the trained networks against each other. Finally, a naïve testing set is then used to determine the overall sensitivity and specificity for the top-ranking networks. Results: Using traditional flow cytometry gating methods to analyze MDSCs as a biomarker for cancer detection, it is difficult to achieve both high sensitivity and specificity due to the substantial overlap with healthy individuals. Here, we incorporated a standard 12 marker flow cytometry assay with NN technology to achieve a sensitivity of 92.3% and a specificity of 90.0% with an area under the ROC curve (AUC) of 0.9477. Conclusions: Pairing the advanced analytical capabilities of our NN with surface biomarker based analysis of MDSCs and certain leukocytes measured in peripheral blood has enabled us the ability to objectively identify patterns indicative for the existence of a solid tumor.
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Trayford, James W., Claudia del P. Lagos, Aaron S. G. Robotham, and Danail Obreschkow. "Fade to grey: systematic variation of galaxy attenuation curves with galaxy properties in the eagle simulations." Monthly Notices of the Royal Astronomical Society 491, no. 3 (November 19, 2019): 3937–51. http://dx.doi.org/10.1093/mnras/stz3234.
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ABSTRACT We present a simple model for galaxy attenuation by fitting skirt radiative transfer calculations for ∼10 000 eagle galaxies at redshifts z = 2 − 0. Our model adapts the two-component screen model of Charlot & Fall, parametrizing the optical depth and slope of the interstellar medium screen using the average dust surface density, Σdust. We recover relatively tight relations between these parameters for the eagle sample, but also provide the scatter in these parameters owing to the morphological variation and orientation of galaxies. We also find that these relations are nearly independent of redshift in the eagle model. By pairing our model with an empirical prescription for birth clouds below the resolution scale of the simulation, we reproduce the observed relation between attenuation slope and optical depth for the first time in a cosmological simulation. We demonstrate that this result is remarkably independent of the attenuation properties assumed for the birth cloud screen, merely requiring a boosted attenuation for infant stars. We present this model with a view to interpreting observations, as well as processing semi-analytic models and other hydrodynamic simulations.
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LEONTIS, NEOCLES B., and ERIC WESTHOF. "Conserved geometrical base-pairing patterns in RNA." Quarterly Reviews of Biophysics 31, no. 4 (November 1998): 399–455. http://dx.doi.org/10.1017/s0033583599003479.
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1. INTRODUCTION 3992. DEFINITIONS 4013. CIS BASEPAIRS 4103.1 Cis Watson–Crick/Watson–Crick 4103.2 Wobble pairings 4113.3 Cis Watson–Crick/Hoogsteen pairings 4163.4 Bifurcated pairings 4173.5 Cis open and water-inserted 4214. TRANS BASEPAIRS 4234.1 Trans Watson–Crick/Watson–Crick 4234.2 Trans wobble pairs 4244.3 Trans Watson–Crick/Hoogsteen pairs 4244.4 Trans Hoogsteen/Hoogsteen pairs 4304.5 Trans bifurcated pairings 4325. SHALLOW-GROOVE PAIRINGS 4325.1 Hoogsteen/Shallow-groove pairs 4335.2 Watson–Crick/Shallow-groove pairings 4385.3 Shallow-groove/Shallow-groove pairings 4406. SIDE-BY-SIDE BASES 4467. DEFINING A LIBRARY OF ISOSTERIC PAIRINGS 4468. CONCLUSIONS 4519. ACKNOWLEDGEMENTS 45210. REFERENCES 452RNA molecules fold into a bewildering variety of complex 3D structures. Almost every new RNA structure obtained at high resolution reveals new, unanticipated structural motifs, which we are rarely able to predict at the current stage of our theoretical understanding. Even at the most basic level of specific RNA interactions – base-to-base pairing – new interactions continue to be uncovered as new structures appear. Compilations of possible non-canonical base-pairing geometries have been presented in previous reviews and monographs (Saenger, 1984; Tinoco, 1993). In these compilations, the guiding principle applied was the optimization of hydrogen-bonding. All possible pairs with two standard H-bonds were presented and these were organized according to symmetry or base type. However, many of the features of RNA base-pairing interactions that have been revealed by high-resolution crystallographic analysis could not have been anticipated and, therefore were not incorporated into these compilations. These will be described and classified in the present review. A recently presented approach for inferring basepair geometry from patterns of sequence variation (Gautheret & Gutell, 1997) relied on the 1984 compilation of basepairs (Saenger, 1984), and was extended to include all possible single H-bond combinations not subject to steric clashes. Another recent review may be consulted for a discussion of the NMR spectroscopy and thermodynamic effects of non-canonical (‘mismatched’) RNA basepairs on duplex stability (Limmer, 1997).
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Alvarado, Lorena. "Lucha Reyes." Journal of Popular Music Studies 34, no. 2 (June 1, 2022): 69–90. http://dx.doi.org/10.1525/jpms.2022.34.2.69.
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This article apprehends the namesake coincidence between two cultural icons of the Américas, Lucha Reyes Aceves (1906-1944) and Lucha Sarcines Reyes (1936-1973). Both twentieth century popular singers emerge from spaces of radical difference and affinity (across temporally distinct gendered, racial, class subjectivity). The author contemplates their singing and its significations in tandem, locating their genealogies and/or legacies not within country, say, but in a dynamic of correlation. In doing so, the author proposes a tocaya (namesake) technique as a method to hear how one Lucha may resonate in another Lucha, a gesture that derives from an ethics of interrelation articulated in Chicana feminist inquiry. Tocaya, a colloquial term of endearment, here participates as epistemology alongside a motley methodology including cultural-historical, literary and biomythographical interpretation. The provocative semiotics of their name (Lucha signifying “struggle”) further catalyzes another analytic, la voz que hace la lucha, that speaks to singing histories from subalternity. Hearing through refraction and tangency, via a transhistorical pairing, yields an extraordinary detail that repeats with them and within others: a singing of self-making and self-consciousness, where voices can be seen, and mirrors heard.
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KLINKHAMER, F. R., and G. E. VOLOVIK. "EMERGENT CPT VIOLATION FROM THE SPLITTING OF FERMI POINTS." International Journal of Modern Physics A 20, no. 13 (May 20, 2005): 2795–812. http://dx.doi.org/10.1142/s0217751x05020902.
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In a fermionic quantum vacuum, the parameters kμ of a CPT-violating Chern–Simons-like action term induced by CPT-violating parameters of the fermionic sector depend on the universality class of the system. As a concrete example, we consider the Dirac Hamiltonian of a massive fermionic quasiparticle and add a particular term with purely-spacelike CPT-violating parameters bμ = (0, b). A quantum phase transition separates two phases, one with a fully-gapped fermion spectrum and the other with topologically-protected Fermi points (gap nodes). The emergent Chern–Simons "vector" kμ = (0, k) now consists of two parts. The regular part, k reg , is an analytic function of |b| across the quantum phase transition and may be nonzero due to explicit CPT violation at the fundamental level. The anomalous (nonanalytic) part, k anom , comes solely from the Fermi points and is proportional to their splitting. In the context of condensed-matter physics, the quantum phase transition may occur in the region of the BEC–BCS crossover for Cooper pairing in the p-wave channel. For elementary particle physics, the splitting of Fermi points may lead to neutrino oscillations, even if the total electromagnetic Chern–Simons-like term cancels out.
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Jeon, Seong-Yun, and Mun-Kyu Lee. "Acceleration of Inner-Pairing Product Operation for Secure Biometric Verification." Sensors 21, no. 8 (April 19, 2021): 2859. http://dx.doi.org/10.3390/s21082859.
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With the recent advances in mobile technologies, biometric verification is being adopted in many smart devices as a means for authenticating their owners. As biometric data leakage may cause stringent privacy issues, many proposals have been offered to guarantee the security of stored biometric data, i.e., biometric template. One of the most promising solutions is the use of a remote server that stores the template in an encrypted form and performs a biometric comparison on the ciphertext domain, using recently proposed functional encryption (FE) techniques. However, the drawback of this approach is that considerable computation is required for the inner-pairing product operation used for the decryption procedure of the underlying FE, which is performed in the authentication phase. In this paper, we propose an enhanced method to accelerate the inner-pairing product computation and apply it to expedite the decryption operation of FE and for faster remote biometric verification. The following two important observations are the basis for our improvement—one of the two arguments for the decryption operation does not frequently change over authentication sessions, and we only need to evaluate the product of multiple pairings, rather than individual pairings. From the results of our experiments, the proposed method reduces the time required to compute an inner-pairing product by 30.7%, compared to the previous best method. With this improvement, the time required for biometric verification is expected to decrease by up to 10.0%, compared to a naive method.
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Manly, Bryan F. J. "On the statistical analysis of niche overlap data." Canadian Journal of Zoology 68, no. 7 (July 1, 1990): 1420–22. http://dx.doi.org/10.1139/z90-211.
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It has recently been suggested that problems with the statistical analysis of niche overlap data can be overcome by computing overlaps between randomly paired individuals. This allows a test for temporal changes in the overlap between two populations. In this paper, it is suggested that this test relies too heavily on random pairing. It is argued that a better test is one based on an analysis of variance of niche overlaps between all possible pairings that can be made at the same time, with the significance level being determined by bootstrapping.
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Lomolino, Giovanna, Matteo Marangon, Simone Vincenzi, and Alberto De Iseppi. "Sparkling Cider Paired with Italian Cheese: Sensory Analysis and Consumer Assessment." Beverages 8, no. 4 (December 13, 2022): 82. http://dx.doi.org/10.3390/beverages8040082.
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Cider is a beverage belonging to the tradition of many European rural areas. Pairing beverages and cheeses, even if it is part of an ancient tradition, is gaining more and more interest from the consumer. For this reason, in this research, we wanted to conduct a preliminary study on the combination of cider and cheese. In particular, six Italian sparkling ciders were selected, obtained through the Charmat and Champenoise method, and four types of Italian cheeses, from the Veneto region: Casatella Trevigiana, Fienil, Morlacco and Ubriaco, with very different sensory characteristics. The cider-cheese pairing test, conducted by a panel of experts, revealed how some cider parameters are reduced in intensity, such as astringency, while others are enhanced, such as fruitiness and persistence taste aroma. The hedonic test, conducted on the matching by 90 consumers, promoted some combinations while others were rejected. The sensory parameters associated with liking were fruity and taste aroma persistence, particularly expressed in some cider-cheese pairings.
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Cho, Keunhee, Young-Hwan Park, and Jeong-Rae Cho. "Model Updating Using Measurements from Sensors Installed in Arbitrary Positions and Directions." Applied Sciences 9, no. 20 (October 14, 2019): 4309. http://dx.doi.org/10.3390/app9204309.
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The present study proposes a method for model updating using measurements from sensors installed in arbitrary positions and directions. Modal identification provides mode shapes for physical quantities (acceleration strain, etc.) measured in specific directions at the location of the sensors. Besides, model updating involves the use of the mode shapes related to the nodal degrees-of-freedom of the finite element analytic model. Consequently, the mode shapes obtained by modal identification and the mode shapes of the model updating process do not coincide even for the same mode. Therefore, a method for constructing transform matrices that distinguish the cases where measurement is done by acceleration, velocity, and displacement sensors and the case where measurement is done by strain sensors was proposed to remedy such disagreement among the mode shapes. The so-constructed transform matrices were then applied when the mode shape residual was used as the objective function or for mode pairing in the model updating process. The feasibility of the proposed approach was verified by means of a numerical example in which the strain or acceleration of a simple beam was measured and a numerical example in which the strain of a bridge was measured. Using the proposed approach, it was possible to model the structure regardless of the position of the sensors and to select the location of the sensors independently from the model.
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Metcalfe, Ralph W., Steven A. Orszag, Marc E. Brachet, Suresh Menon, and James J. Riley. "Secondary instability of a temporally growing mixing layer." Journal of Fluid Mechanics 184 (November 1987): 207–43. http://dx.doi.org/10.1017/s0022112087002866.
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The three-dimensional stability of two-dimensional vortical states of planar mixing layers is studied by direct numerical integration of the Navier-Stokes equations. Small-scale instabilities are shown to exist for spanwise scales at which classical linear modes are stable. These modes grow on convective timescales, extract their energy from the mean flow and exist at moderately low Reynolds numbers. Their growth rates are comparable with the most rapidly growing inviscid instability and with the growth rates of two-dimensional subharmonic (pairing) modes. At high amplitudes, they can evolve into pairs of counter-rotating, streamwise vortices, connecting the primary spanwise vortices, which are very similar to the structures observed in laboratory experiments. The three-dimensional modes do not appear to saturate in quasi-steady states as do the purely two-dimensional fundamental and subharmonic modes in the absence of pairing. The subsequent evolution of the flow depends on the relative amplitudes of the pairing modes. Persistent pairings can inhibit three-dimensional instability and, hence, keep the flow predominantly two-dimensional. Conversely, suppression of the pairing process can drive the three-dimensional modes to more chaotic, turbulent-like states. An analysis of high-resolution simulations of fully turbulent mixing layers confirms the existence of rib-like structures and that their coherence depends strongly on the presence of the two-dimensional pairing modes.
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Wu, Frances M., Thomas G. Rundall, Stephen M. Shortell, and Joan R. Bloom. "Using health information technology to manage a patient population in accountable care organizations." Journal of Health Organization and Management 30, no. 4 (June 20, 2016): 581–96. http://dx.doi.org/10.1108/jhom-01-2015-0003.
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Purpose – The purpose of this paper is to describe the current landscape of health information technology (HIT) in early accountable care organizations (ACOs), the different strategies ACOs are using to develop HIT-based capabilities, and how ACOs are using these capabilities within their care management processes to advance health outcomes for their patient population. Design/methodology/approach – Mixed methods study pairing data from a cross-sectional National Survey of ACOs with in-depth, semi-structured interviews with leaders from 11 ACOs (both completed in 2013). Findings – Early ACOs vary widely in their electronic health record, data integration, and analytic capabilities. The most common HIT capability was drug-drug and drug-allergy interaction checks, with 53.2 percent of respondents reporting that the ACO possessed the capability to a high degree. Outpatient and inpatient data integration was the least common HIT capability (8.1 percent). In the interviews, ACO leaders commented on different HIT development strategies to gain a more comprehensive picture of patient needs and service utilization. ACOs realize the necessity for robust data analytics, and are exploring a variety of approaches to achieve it. Research limitations/implications – Data are self-reported. The qualitative portion was based on interviews with 11 ACOs, limiting generalizability to the universe of ACOs but allowing for a range of responses. Practical implications – ACOs are challenged with the development of sophisticated HIT infrastructure. They may benefit from targeted assistance and incentives to implement health information exchanges with other providers to promote more coordinated care management for their patient population. Originality/value – Using new empirical data, this study increases understanding of the extent of ACOs’ current and developing HIT capabilities to support ongoing care management.
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Williams, C. E., S. M. Wielgus, G. T. Haberlach, C. Guenther, H. Kim-Lee, and J. P. Helgeson. "RFLP analysis of chromosomal segregation in progeny from an interspecific hexaploid somatic hybrid between Solanum brevidens and Solanum tuberosum." Genetics 135, no. 4 (December 1, 1993): 1167–73. http://dx.doi.org/10.1093/genetics/135.4.1167.
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Abstract Segregation of restriction fragment length polymorphism (RFLP) loci was monitored to determine the degree of homeologous pairing and recombination in a hexaploid somatic hybrid, A206, the result of protoplast fusion between Solanum tuberosum (PI 203900, a tetraploid cultivated potato) and Solanum brevidens (PI 218228), a diploid, sexually incompatible, distant relative harboring several traits for disease resistance. Somatic hybrid A206 was crossed to Katahdin, a tetraploid potato cultivar, to generate a segregating population of pentaploid progeny. Although the clones of the tetraploid S. tuberosum lines PI 203900 and Katahdin were highly polymorphic, the diploid S. brevidens clone was homozygous at all but two of the tested RFLP loci. Thus, homeologous recombination could be detected only when S. tuberosum and S. brevidens chromosomes paired and the S. brevidens homologs then segregated into separate gametes. A bias toward homologous pairing was observed for all 12 chromosomes. At least four and perhaps six chromosomes participated in homologous pairing only; each of 24 progeny contained all S. brevidens-derived RFLP markers for chromosomes 4, 8, 9 and 10. The remaining six chromosomes paired with their homolog(s) about twice as often as expected if hexaploid pairings were completely random. Where detectable with RFLPs, homeologous recombination (both single and double) occurred at a frequency of 1.31 per chromosome. Cytological observations of meiosis I in the somatic hybrid indicated that homeologous pairing had occurred. Enhanced recombinational activity was observed for chromosome 2. A specific small deletion from chromosome 4 was detected in A206 and 11 other somatic hybrids out of 14 screened.(ABSTRACT TRUNCATED AT 250 WORDS)
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A. Edison, Enaibe, Akpata Erhieyovwe, and Osafile Omosede. "A VARIATIONAL THEORY OF QUASI-PARTICLES IN A 3D N x N x N CUBIC LATTICE." JOURNAL OF ADVANCES IN PHYSICS 5, no. 1 (August 2, 2014): 712–25. http://dx.doi.org/10.24297/jap.v5i1.6101.
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The single-band Hubbard Hamiltonian study faces a serious limitation and difficulty as we move away from finite - size lattices to larger N - dimensional lattices. Thus there is the needto develop the means of overcoming the finite - size lattice defects as we pass on to a higher dimension.In this work, a quantitative approximation to the one-band Hubbard model is presented using a variational analytic approach. The goal of this work, therefore, is to explore quantitatively the lowest ground-state energy and the pairing correlations in 3D N x N x N lattices of the Hubbard model. We developed the unit step model as an approximate solution to the single-band Hubbard Hamiltonian to solve variationallythe correlation of two interacting elections on a three-dimensional cubic lattice. We also showed primarily how to derive possible electronic states available for several even and odd3D lattices, although, this work places more emphasis on a 3D 5 x 5 x 5 lattice. The results emerging from our present study compared favourablywith the results of Gutzwillervariational approach (GVA) and correlated variational approach (CVA), at thelarge limit of the Coulomb interaction strength (U/4t). It is revealed in this study, that the repulsive Coulomb interaction which in part leads to the strong electronic correlations, would indicate that the two electron system prefer not to condense into s-wave superconducting singlet state (s = 0), at high positive values of the interaction strength.
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Stephenson, Amber L., D. Alex Heckert, and David B. Yerger. "Examining college student retention: a closer look at low self-control." International Journal of Educational Management 34, no. 5 (February 7, 2020): 953–64. http://dx.doi.org/10.1108/ijem-07-2018-0208.
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PurposeThe purpose of this paper is to comprehensively explore the association between low self-control and college student retention.Design/methodology/approachCross-sectional survey data were obtained from 369 undergraduate students in the USA and combined with follow-up data on retention. Factor analysis was used to develop and validate the abbreviated eight-item low self-control instrument. Propensity score matching, an analytic technique that permits the assertion of causality without the need for experimental design, was used to examine the relationship between low self-control and second-semester college retention. Use of propensity score matching permitted the pairing of survey respondents under the defined circumstance of low self-control with those respondents not having low self-control under multiple relevant covariates.FindingsThe results showed a relationship between low self-control and college retention. Specifically, in the matched sample, those students with low self-control were 8 percent less likely to be retained at the institution at the onset of the second year than their counterparts with higher self-control.Practical implicationsThe results of the study prompt the important question of how colleges and universities can alter their structures and processes to better support students with low self-control. Key managerial and administrative implications from the findings of this study revolve around the recognition, motivation, and subsequent performance appraisals of those students with low self-control.Originality/valueThis study extends the quite limited research on how low self-control correlates with retention and subsequently offers insights on how to further support students with low self-control as a way to improve retention outcomes. Additionally, the validated eight-item survey provides a quick, low-cost assessment tool for interested researchers and managers.
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DeMarco, Laura, Holly Krieger, and Hexi Ye. "Common preperiodic points for quadratic polynomials." Journal of Modern Dynamics 18 (2022): 363. http://dx.doi.org/10.3934/jmd.2022012.
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<p style='text-indent:20px;'>Let <inline-formula><tex-math id="M1">\begin{document}$ f_c(z) = z^2+c $\end{document}</tex-math></inline-formula> for <inline-formula><tex-math id="M2">\begin{document}$ c \in {\mathbb C} $\end{document}</tex-math></inline-formula>. We show there exists a uniform upper bound on the number of points in <inline-formula><tex-math id="M3">\begin{document}$ {\mathbb P}^1( {\mathbb C}) $\end{document}</tex-math></inline-formula> that can be preperiodic for both <inline-formula><tex-math id="M4">\begin{document}$ f_{c_1} $\end{document}</tex-math></inline-formula> and <inline-formula><tex-math id="M5">\begin{document}$ f_{c_2} $\end{document}</tex-math></inline-formula>, for any pair <inline-formula><tex-math id="M6">\begin{document}$ c_1\not = c_2 $\end{document}</tex-math></inline-formula> in <inline-formula><tex-math id="M7">\begin{document}$ {\mathbb C} $\end{document}</tex-math></inline-formula>. The proof combines arithmetic ingredients with complex-analytic: we estimate an adelic energy pairing when the parameters lie in <inline-formula><tex-math id="M8">\begin{document}$ \overline{\mathbb{Q}} $\end{document}</tex-math></inline-formula>, building on the quantitative arithmetic equidistribution theorem of Favre and Rivera-Letelier, and we use distortion theorems in complex analysis to control the size of the intersection of distinct Julia sets. The proofs are effective, and we provide explicit constants for each of the results.</p>
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Kelley, Kathleen, Jeffrey Hyde, and Johan Bruwer. "U.S. wine consumer preferences for bottle characteristics, back label extrinsic cues and wine composition." Asia Pacific Journal of Marketing and Logistics 27, no. 4 (September 14, 2015): 516–34. http://dx.doi.org/10.1108/apjml-09-2014-0140.
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Purpose – The purpose of this paper is to examine what factors and assortment of factors on wine back labels, representative of those found in the US market, appealed to consumers. Moreover, what changes to wine bottle characteristics and standard wine composition appealed and could affect their purchasing decision. Design/methodology/approach – Data were collected through an online survey of 910 wine consumers who resided in Metropolitan Philadelphia and New York City. Findings – Based on conjoint analysis, averaged importance for food-wine-pairing information on wine bottle back labels was greater than both how to contact and connect with the winery and winery background information. Within the pairing information factor, description of food-wine-pairings and symbols of food-wine-pairings received positive utility values, indicating consumers preferred these options more than having no pairing information present. Consumers who purchased wine at least once a week were more positively impacted by the alternatives presented, with influence decreasing as purchasing frequency declined. Wine purchasing frequency is related to the number of wine drinkers living in a household and wine consumption within a household is most often a shared consumption activity. More females drink wine but the consumption frequency of males is higher. Practical implications – Producers considering changing either the wine composition or a bottle characteristic should note that, based on frequency of wine purchasing, changes that may invoke a positive response are: decreased calorie content, wine made from “sustainably farmed” or “naturally farmed” grapes, and producing USDA Certified Organic wine. Originality/value – This study is the first to investigate what changes to extrinsic cues in the form of wine bottle and back label characteristics and to the wine composition (taste) intrinsic cue appeal to consumers in the US market and might influence their purchase decisions.
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Chen, Siyuan, Alberto Sesana, and Christopher J. Conselice. "Constraining astrophysical observables of galaxy and supermassive black hole binary mergers using pulsar timing arrays." Monthly Notices of the Royal Astronomical Society 488, no. 1 (June 21, 2019): 401–18. http://dx.doi.org/10.1093/mnras/stz1722.
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ABSTRACT We present an analytic model to describe the supermassive black hole binary (SMBHB) merger rate in the Universe with astrophysical observables: galaxy stellar mass function, pair fraction, merger time-scale, and black hole–host galaxy relations. We construct observational priors and compute the allowed range of the characteristic spectrum hc of the gravitational wave background (GWB) to be 10−16 < hc < 10−15 at a frequency of f = 1 yr−1. We exploit our parametrization to tackle the problem of astrophysical inference from pulsar timing array (PTA) observations. We simulate a series of upper limits and detections and use a nested sampling algorithm to explore the parameter space. Corroborating previous results, we find that the current PTA non-detection does not place significant constraints on any observables; however, either future upper limits or detections will significantly enhance our knowledge of the SMBHB population. If a GWB is not detected at a level of hc(f = 1 yr−1) = 10−17, our current understanding of galaxy and SMBHB mergers is disfavoured at a 5σ level, indicating a combination of severe binary stalling, overestimating of the SMBH–host galaxy relations, and extreme dynamical properties of merging SMBHBs. Conversely, future detections of a Square Kilometre Array (SKA)-type instrument will allow to constrain the normalization of the SMBHB merger rate in the Universe, the time between galaxy pairing and SMBHB merging, the normalization of the SMBH–host galaxy relations and the dynamical binary properties, including their eccentricity and density of stellar environment.
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Groza, Bogdan, and Pal-Stefan Murvay. "Identity-Based Key Exchange on In-Vehicle Networks: CAN-FD & FlexRay." Sensors 19, no. 22 (November 12, 2019): 4919. http://dx.doi.org/10.3390/s19224919.
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Security has become critical for in-vehicle networks as they carry safety-critical data from various components, e.g., sensors or actuators, and current research proposals were quick to react with cryptographic protocols designed for in-vehicle buses, e.g., CAN (Controller Area Network). Obviously, the majority of existing proposals are built on cryptographic primitives that rely on a secret shared key. However, how to share such a secret key is less obvious due to numerous practical constraints. In this work, we explore in a comparative manner several approaches based on a group extension of the Diffie–Hellman key-exchange protocol and identity-based authenticated key agreements. We discuss approaches based on conventional signatures and identity-based signatures, garnering advantages from bilinear pairings that open road to several well-known cryptographic constructions: short signatures, the tripartite Diffie–Hellman key exchange and identity-based signatures or key exchanges. Pairing-based cryptographic primitives do not come computationally cheap, but they offer more flexibility that leads to constructive advantages. To further improve on performance, we also account for pairing-free identity-based key exchange protocols that do not require expensive pairing operations nor explicit signing of the key material. We present both computational results on automotive-grade controllers as well as bandwidth simulations with industry-standard tools, i.e., CANoe, on modern in-vehicle buses CAN-FD and FlexRay.
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Chatterjee, Sanjit, M. Prem Laxman Das, and R. Kabaleeshwaran. "Converting pairing-based cryptosystems from composite to prime order setting – A comparative analysis." Journal of Mathematical Cryptology 12, no. 3 (September 1, 2018): 159–90. http://dx.doi.org/10.1515/jmc-2017-0042.
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Abstract Composite order pairing setting has been used to achieve cryptographic functionalities beyond what is attainable in prime order groups. However, such pairings are known to be significantly slower than their prime order counterparts. Thus emerged a new line of research – developing frameworks to convert cryptosystems from composite to prime order pairing setting. In this work, we analyse the intricacies of efficient prime order instantiation of cryptosystems that can be converted using existing frameworks. To compare the relative efficacy of these frameworks we mainly focus on some representative schemes: the Boneh–Goh–Nissim (BGN) homomorphic encryption scheme, ring and group signatures as well as a blind signature scheme. Our concrete analyses lead to several interesting observations. We show that even after a considerable amount of research, the projecting framework implicit in the very first work of Groth–Sahai still remains the best choice for instantiating the BGN cryptosystem. Protocols like the ring signature and group signature which use both projecting and cancelling setting in composite order can be most efficiently instantiated in the Freeman prime-order projecting only setting. In contrast, while the Freeman projecting setting is sufficient for the security reduction of the blind signature scheme, the simultaneous projecting and cancelling setting does provide some efficiency advantage.
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Mayrhofer, René, Helmut Hlavacs, and Rainhard Dieter Findling. "Optimal derotation of shared acceleration time series by determining relative spatial alignment." International Journal of Pervasive Computing and Communications 11, no. 4 (November 2, 2015): 454–66. http://dx.doi.org/10.1108/ijpcc-08-2015-0031.
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Purpose – The purpose of this article is to improve detection of common movement. Detecting if two or multiple devices are moved together is an interesting problem for different applications. However, these devices may be aligned arbitrarily with regards to each other, and the three dimensions sampled by their respective local accelerometers can therefore not be directly compared. The typical approach is to ignore all angular components and only compare overall acceleration magnitudes – with the obvious disadvantage of discarding potentially useful information. Design/methodology/approach – This paper contributes a method to analytically determine relative spatial alignment of two devices based on their acceleration time series. The method uses quaternions to compute the optimal rotation with regards to minimizing the mean squared error. Findings – Based on real-world experimental data from smartphones and smartwatches shaken together, the paper demonstrates the effectiveness of the method with a magnitude squared coherence metric, for which an improved equal error rate (EER) of 0.16 (when using derotation) over an EER of 0.18 (when not using derotation) is shown. Practical implications – After derotation, the reference system of one device can be (locally and independently) aligned with the other, and thus all three dimensions can consequently be compared for more accurate classification. Originality/value – Without derotating time series, angular information cannot be used for deciding if devices have been moved together. To the best of the authors ' knowledge, this is the first analytic approach to find the optimal derotation of the coordinate systems, given only the two 3D time acceleration series of devices (supposedly) moved together. It can be used as the basis for further research on improved classification toward acceleration-based device pairing.
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Ego-Stengel, Valérie, Daniel E. Shulz, Sebastian Haidarliu, Ronen Sosnik, and Ehud Ahissar. "Acetylcholine-Dependent Induction and Expression of Functional Plasticity in the Barrel Cortex of the Adult Rat." Journal of Neurophysiology 86, no. 1 (July 1, 2001): 422–37. http://dx.doi.org/10.1152/jn.2001.86.1.422.
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The involvement of acetylcholine (ACh) in the induction of neuronal sensory plasticity is well documented. Recently we demonstrated in the somatosensory cortex of the anesthetized rat that ACh is also involved in the expression of neuronal plasticity. Pairing stimulation of the principal whisker at a fixed temporal frequency with ACh iontophoresis induced potentiations of response that required re-application of ACh to be expressed. Here we fully characterize this phenomenon and extend it to stimulation of adjacent whiskers. We show that these ACh-dependent potentiations are cumulative and reversible. When several sensori-cholinergic pairings were applied consecutively with stimulation of the principal whisker, the response at the paired frequency was further increased, demonstrating a cumulative process that could reach saturation levels. The potentiations were specific to the stimulus frequency: if the successive pairings were done at different frequencies, then the potentiation caused by the first pairing was depotentiated, whereas the response to the newly paired frequency was potentiated. During testing, the potentiation of response did not develop immediately on the presentation of the paired frequency during application of ACh: the analysis of the kinetics of the effect indicates that this process requires the sequential presentation of several trains of stimulation at the paired frequency to be expressed. We present evidence that a plasticity with similar characteristics can be induced for responses to stimulation of an adjacent whisker, suggesting that this potentiation could participate in receptive field spatial reorganizations. The spatial and temporal properties of the ACh-dependent plasticity presented here impose specific constraints on the underlying cellular and molecular mechanisms.
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Cecchi, Teresa. "Ion Pairing Chromatography." Critical Reviews in Analytical Chemistry 38, no. 3 (August 2008): 161–213. http://dx.doi.org/10.1080/10408340802038882.
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Ponec, Robert. "Electron Pairing and Chemical Bonds." Collection of Czechoslovak Chemical Communications 59, no. 3 (1994): 505–16. http://dx.doi.org/10.1135/cccc19940505.
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The recently proposed population analysis of pair densities is applied to the investigation of molecular structure of several simple molecules. The values of pairon populations straightforwardly reproduce the classical structural formula including the multiplicity of the bonds and provide thus the so far missing link between quantum chemical and Lewis's classical picture of bonding. As demonstrated, the formalism of the proposed approach provides strong theoretical evidence for the frequently expected but so far elusive role of electron pairing in chemical bonding.
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Hagiwara, Mayumi, Graham G. Rifenbark, Karrie A. Shogren, and James R. Thompson. "Impact of Different Pairings of Respondents on Scores on the Supports Intensity Scale—Adult Version (SIS-A)." American Journal on Intellectual and Developmental Disabilities 126, no. 5 (August 24, 2021): 361–76. http://dx.doi.org/10.1352/1944-7558-126.5.361.
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Abstract This secondary analysis examined the impact of respondent-level factors on scores on the Supports Intensity Scale–Adult Version (SIS-A) to determine if there were patterns of differences in SIS-A scores based on the number of respondents and the pairings of respondents that were included in SIS-A interviews. Results indicated that having fewer respondents led to a greater variability in SIS-A scores whereas having more respondents led to higher mean, overall support need scores. When respondents included an adult with intellectual disability (ID) the mean score was significantly lower. However, there were complex influences of pairing an adult with ID with either a professional or family member on SIS-A scores. Implications for administering and using the SIS-A are discussed.
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Liu, Ling, Urmi Das, Samuel Ogunsola, and Jiuyong Xie. "Transcriptome-Wide Detection of Intron/Exon Definition in the Endogenous Pre-mRNA Transcripts of Mammalian Cells and Its Regulation by Depolarization." International Journal of Molecular Sciences 23, no. 17 (September 5, 2022): 10157. http://dx.doi.org/10.3390/ijms231710157.
Full textAbstract:
Pairing of splice sites across an intron or exon is the central point of intron or exon definition in pre-mRNA splicing with the latter mode proposed for most mammalian exons. However, transcriptome-wide pairing within endogenous transcripts has not been examined for the prevalence of each mode in mammalian cells. Here we report such pairings in rat GH3 pituitary cells by measuring the relative abundance of nuclear RNA-Seq reads at the intron start or end (RISE). Interestingly, RISE indexes are positively correlated between 5′ and 3′ splice sites specifically across introns or exons but inversely correlated with the usage of adjacent exons. Moreover, the ratios between the paired indexes were globally modulated by depolarization, which was disruptible by 5-aza-Cytidine. The nucleotide matrices of the RISE-positive splice sites deviate significantly from the rat consensus, and short introns or exons are enriched with the cross-intron or -exon RISE pairs, respectively. Functionally, the RISE-positive genes cluster for basic cellular processes including RNA binding/splicing, or more specifically, hormone production if regulated by depolarization. Together, the RISE analysis identified the transcriptome-wide regulation of either intron or exon definition between weak splice sites of short introns/exons in mammalian cells. The analysis also provides a way to further track the splicing intermediates and intron/exon definition during the dynamic regulation of alternative splicing by extracellular factors.
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Mora-Marín, David F. "THE CASCAJAL BLOCK: NEW LINE DRAWING, DISTRIBUTIONAL ANALYSIS, AND ORTHOGRAPHIC PATTERNS." Ancient Mesoamerica 31, no. 2 (2020): 210–29. http://dx.doi.org/10.1017/s0956536119000270.
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AbstractThis paper studies the Cascajal Block, a serpentinite artifact with an Olmec text dating to ca. 1000–900 b.c. (Rodríguez Martínez et al. 2006a). It introduces a new line drawing made possible by the detailed documentation carried out by Carrasco and Englehardt, presents a distributional analysis of the inscription in order to assess the sign inventory proposed by Rodríguez Martínez et al. (2006a) and revised by Mora-Marín (2009), and, most significantly, suggests that certain irregularities in the patterns of sign co-occurrence raised by previous authors (Justeson 2012; Macri 2006) are consistent with spelling practices in logosyllabic scripts, showing that the script is linguistically motivated. The work by Carrasco and Englehardt (2015) on the identification and analysis of sign pairings as likely diphrastic kennings is highlighted as crucial to establishing semantic controls needed for any attempt at decipherment; a new, repeated pairing is proposed, consisting of the PELT-PAW signs. Finally, this paper assesses how the various models for the reading formatting and direction of the text could impact the proposed hypotheses.