cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Visual Mining Approach to Improved Multiple-Instance Learning
Creators: name: Castelo, Sonia
name: Ponti, Moacir
name: Minghim, Rosane
Publisher: name: arXiv
Year: 2020
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Multiple-instance learning (MIL) is a paradigm of machine learning that aims to classify a set (bag) of objects (instances), assigning labels only to the bags. This problem is often addressed by selecting an instance to represent each bag, transforming a MIL problem into standard supervised learning. Visualization can be a useful tool to assess learning scenarios by incorporating the users' knowledge into the classification process. Considering that multiple-instance learning is a paradigm that cannot be handled by current visualization techniques, we propose a multiscale tree-based visualization called MILTree to support MIL problems. The first level of the tree represents the bags, and the second level represents the instances belonging to each bag, allowing users to understand the MIL datasets in an intuitive way. In addition, we propose two new instance selection methods for MIL, which help users improve the model even further. Our methods can handle both binary and multiclass scenarios. In our experiments, SVM was used to build the classifiers. With support of the MILTree layout, the initial classification model was updated by changing the training set, which is composed of the prototype instances. Experimental results validate the effectiveness of our approach, showing that visual mining by MILTree can support exploring and improving models in MIL scenarios and that our instance selection methods outperform the currently available alternatives in most cases.
Python widgets for astronomy visualization
Creators: name: Shupe, David L
name: Roby, Trey
name: Wu, Xiuqin
name: Dubois-Felsmann, Gregory P
Publisher: name: Zenodo
Year: 2017
Subjects: Python
astronomy
visualization

description: The slides were presented May 10, 2017 at the Python in Astronomy workshop, held at the Lorentz Center, Leiden, NL. The talk starts with an overview of the Firefly visualization system and its interfaces in Javascript and Python. An example is shown of tightly coupling a Jupyter notebook with Firefly and the Large Synoptic Survey Telescope stack. A brief description of Jupyter widgets is given, and examples of the Firefly widgets for Jupyter are presented. The talk closes with lessons learned from the widget development, and resources for those wanting to learn more about Firefly and using it with Python.
Crystal structures of di­aquadi-μ-hydroxido-tris­­[tri­methyl­tin(IV)] diformatotri­methyl­stannate(IV) and di-μ-hydroxido-tris­­[tri­methyl­tin(IV)] chloride monohydrate
Creators: name: Otte, Felix
name: Koller, Stephan G.
name: Golz, Christopher
name: Strohmann, Carsten
Publisher: name: Technische Universität Dortmund
Year: 2016
Subjects: subject: Crystal structure
subject: Tin
subject: Trimethyltin hydroxide
subject: Formate
subject: Chloride
subject: Hydrolysis
subject: Hydrogen bonding
subject: 540

description: The title compounds, [Sn3(CH3)9(OH)2(H2O)2][Sn(CH3)3(CHO2)2] (1) and [Sn3(CH3)9(OH)2]Cl·H2O (2), are partially condensed products of hydrolysed tri­methyl­tin chloride. In the structures of 1 and 2, short cationic tris­tannatoxanes (C9H29O2Sn3) are bridged by a diformatotri­methyl­tin anion or a chloride anion, respectively. Hydrogen bridges are present and supposedly stabilize these structures against further polymerization to the known polymeric tri­methyl­tin hydroxide. Especially noteworthy is that the formate present in this structure was formed from atmospheric CO2.
description: Acta Cryst. E;72(10)
An Economic Analysis of Fresh Fruit and Vegetable Consumption: Implications for Overweight and Obesity among Higher- and Lower-Income Consumers
Creators: name: Jones, Eugene
name: Jones, Eugene
Publisher: name: Unknown
Year: 2006
Subjects: Consumer/Household Economics

description: This paper examines the purchasing behavior of higher- and lower-income consumers for fresh fruit and vegetables. Lower-income consumers are shown to have higher own-price elasticities for most sub-categories of produce and to pay lower per unit prices for all but two sub-categories. Results suggest that lower-income consumers are purchasing lower-quality commodities and their incomes constrain their ability to increase consumption to reach a more healthy and nutritious diet.
description: Replaced with revised version of paper 07/21/06.
Tribocorrosion under galvanic interaction of Ti6Al4V and NiCr implant alloys
Creators: name: Barros, Camila Dias dos Reis
name: Rocha, Janaina Cardozo
name: Bastos, Ivan Napoleão
name: Gomes, José Antônio da Cunha Ponciano
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Micromovements that occur in the joint between dental prostheses and implants can lead to wear-induced degradation. This process can be enhanced by corrosion in the oral environment influenced by the presence of solutions containing fluoride. Moreover, the eventual galvanic interactions between NiCr and Ti alloys can accelerate the wear-corrosion process. In this work, the tribocorrosion process of Ti6Al4V and NiCr alloys used in dental implant rehabilitations immersed in fluoride solutions at different pH values was investigated. The galvanic interaction effect between the alloys was also assessed. Tribocorrosion tests in corrosive media were performed with isolated Ti6Al4V and NiCr alloys, followed by testing with both alloys in contact. The media selected were based on fluoride concentrations and pH values that are possible to be found in oral environments. Analysis of the surfaces after the tribocorrosion tests was carried out using confocal laser microscopy. The wear profile and volume losses were determined by confocal measurements. It was concluded that the galvanic interaction between the alloys increased the tribocorrosion resistance of Ti6Al4V, compared with that of the isolated Ti6Al4V alloy. Ti6Al4V coupled with NiCr reduced the electrochemical potential decay during sliding. The increased resistance was explained by the electrochemical shift of the Ti6Al4V potential from active dissolution to the passive domain.
description: 23 pages
2226-4000-riics-15-01-83.pdf
Creators: name: THIAGO MACIEL FERREIRA
Publisher: name: figshare
Year: 2021
Subjects: subject: 130103 Higher Education
subject: FOS: Educational sciences

description: RESUMO: Este estudo objetivou analisar as possibilidades de uso das Ntics, principalmente por intermédio dos Smartphones dos próprios alunos, como ferramenta no processo de ensino-aprendizagem. Na atualidade onde a tecnologia é presente em todos os setores da sociedade, cabem as instituições de ensino refletir sobre a importância de disponibilizar novos formatos de passar o conhecimento via as Ntics. Bem como listou-se aplicativos free para smartphones, onde os mesmos foram perfeitamente capazes de auxiliar o processo de ensino-aprendizagem no estudo de caso ministrado; sem impactos financeiros nesta modalidade de aula; e com rápida adesão por parte dos alunos já familiarizados com tais práticas tecnológica. Desafios de criar formas de como educar os jovens no seu território nativo e como educar os educadores neste novo mundo estranho a eles, ou seja: no mundo das novas tecnologias de informação e comunicação. Finalmente, por meio de todo o exposto, foi bem possível confirmar que novos métodos fundamentados nas Ntics, são poderosas ferramentas no processo educacional, usando estes recursos para tornar os alunos agentes ativos do processo educacional, como também para ajudar professores em suas praxes como, por exemplo, no processo de avaliação, progredindo para potencializar o ensino e maximizar o aprendizado por intermédio das Ntics.
A DYNAMIC ANALYSIS OF SUSTAINABLE FARMING SYSTEMS IN CALIFORNIA AGRICULTURE
Creators: name: Wicks, Santhi
name: Howitt, Richard E.
name: Klonsky, Karen
name: Wicks, Santhi
name: Howitt, Richard E.
name: Klonsky, Karen
Publisher: name: Unknown
Year: 2006
Subjects: Farm Management

description: The economic viability of alternative and more sustainable agriculture farming systems depend on the value of farm profits. These values may be estimated through short or long-run of profit maximization, but there is a difference in these methods. In short-run profit maximization the instantaneous marginal benefits are equated to the marginal costs of production. Where as in the long-run maximization of profits the capital value of soil resources are quantify in addition to the direct revenues and costs of each system over time. A long-run approach is fundamental to capture the value of capital improvements in soil resources. In this study we use short-run experimental data from SAFS's rotations to calibrate the crop simulation model EPIC, and obtain a time series cross-sectional data set for developing the dynamic bioeconomic models. With data from EPIC we are able to expand the existing short-run analysis, to estimate the long-run profitability and ecological benefits of alternative sustainable farming systems in comparison to conventional systems. Profit maximizing farmers who may not adopt sustainable methods based on short-run returns may well adopt them when long-run capital values are included. Finally, when environmental constraints are imposed on agricultural technology, for example to reduce non-point source pollution, results from our bioeconomic models are expected to show that sustainable technologies are more valuable.
Evolution of coupled fermions under the influence of an external axial-vector field
Creators: name: Dvornikov, Maxim
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The evolution of coupled fermions interacting with external axial-vector fields is described with help of the classical field theory. We formulate the initial conditions problem for the system of two coupled fermions in (3+1)-dimensional space-time. This problem is solved using the perturbation theory. We obtain in the explicit form the expressions for the leading and next to the leading order terms in the expansion over the strength of external fields. It is shown that in the relativistic limit the intensity of the fermion field coincides with the transition probability in the two neutrinos system interacting with moving and polarized matter.
description: RevTeX4, 8 pages, 1 eps figure; revised variant, neutral currents interactions of flavor neutrinos are included, some typos corrected, 1 reference added; accepted for publication in Eur.Phys.J.C
Macrophage migration inhibitory factor is involved in endovascular trophoblast cell function in vitro
Creators: name: Vilotic, Aleksandra
name: Jovanovic Krivokuca, Milica
name: Stefanoska, Ivana
name: Vrzic Petronijevic, Svetlana
name: Petronijevic, Milos
name: Vicovac, Ljiljana
Publisher: name: Technische Universität Dortmund
Year: 2019
Subjects: subject: Trophoblast
subject: HTR-8/SVneo
subject: HUVEC
subject: N-cadherin
subject: 610

description: Macrophage migration inhibitory factor (MIF) is a multifunctional cytokine abundantly present at the feto-maternal interface proposed to play a role in establishment of pregnancy. We have previously shown that pharmacological inhibition of enzymatic activity of MIF decreases extravillous trophoblast invasion and migration in vitro. This study aimed to further elucidate potential role of endogenous trophoblast MIF, and to assess its importance for endovascular trophoblast cell function in particular. Attenuation of MIF by siRNA reduced HTR-8/SVneo cell invasion through Matrigel (59 % of control), expression of integrin α1 (86 % of control) and levels of MMP2 and MMP9 (87 % and 57 % of control, respectively). MIF specific siRNA reduced the ability of HTR-8/SVneo to differentiate in to endothelial-like phenotype, as determined by Matrigel tube formation assay. The total tube length was decreased to 68.6 %, while the number of branching points was reduced to 57.8 % of control. HTR-8/SVneo cell capacity to integrate into HUVEC monolayers was reduced by knock-down of MIF. This could be partly caused by reduced N-cadherin expression to 63 % of control, which decreased with knock-down of MIF, as the expression of this protein was recently shown essential for trophoblast-endothelial interaction. These novel findings indicate a novel role for trophoblast MIF in spiral artery remodeling process.
description: EXCLI Journal;Vol. 18 2019
Antiviral activity of flavonoids present in aerial parts of Marcetia taxifolia against Hepatitis B virus, Poliovirus, and Herpes Simplex Virus in vitro
Creators: name: Ortega, Joseph Thomas
name: Serrano, María Luisa
name: Suárez, Alírica Isabel
name: Baptista, Jani
name: Pujol, Flor Helene
name: Cavallaro, Lucía Vicenta
name: Campos, Héctor Rodolfo
name: Rangel, Héctor Rafael
Publisher: name: Technische Universität Dortmund
Year: 2019
Subjects: subject: Antiviral
subject: Flavonoids
subject: Marcetia taxifolia
subject: HBV
subject: HSV
subject: Polio
subject: 610

description: Marcetia taxifolia is a neotropical plant present in South America and it has been evaluated in several biological models due to the presence of active metabolites. Nevertheless, there is a limited quantity of studies related to the antiviral activity of the compounds present in this genus. In our work, the antiviral effect of the compounds isolated from the aerial parts of Marcetia taxifolia was evaluated against Hepatitis B virus (HBV), Herpes Simplex Virus type 1 (HSV-1), and Poliovirus type 1 (PV-1). The cytopathic effect and viral quantification by qPCR were determined as indicative of antiviral activity. Our data show that myricetin rhamnoside (MyrG), myricetin-3-α-O-ramnosil (1→6)-α-galactoside (MyrGG), 5,3'-dihydroxy-3,6,7,8,4’-pentamethoxyflavone (PMF), 5-hydroxy-3,6,7,3',4'pentamethoxyflavone (PMF-OH) had antiviral activity without cytotoxic effects. The methoxyflavones PMF and PMF-OH were the most active compounds, showing an antiviral effect against all the evaluated viruses. Computational studies showed that these compounds could interact with the Reverse Transcriptase. Altogether, these results suggest that the flavonoids (related to myricetin and methoxyflavones) are the main antiviral compounds present in the aerial parts of Marcetia taxifolia. Furthermore, our results showed that the methoxyflavones have a broad antiviral activity, which represents an opportunity to evaluate these flavonoids as lead molecules to develop new antiviral compounds.
description: EXCLI Journal;Vol. 18 2019
Potential Effects of Transgenic Rice on Farm Households' Nutritional Status in Bangladesh
Creators: name: Liang, Yan
name: Reaves, Dixie Watts
name: Norton, George W.
name: Liang, Yan
name: Reaves, Dixie Watts
name: Norton, George W.
Publisher: name: Unknown
Year: 2006
Subjects: Food Security and Poverty

description: The spread of agricultural biotechnology in developing countries has grown rapidly in recent years. Several transgenic products are under development with potential to address a variety of adverse production conditions. These products have raised hope that yield and quality improvements in rice will accelerate and help in the battle against under-nutrition, especially in areas of prevalent under-nutrition in Asia. A farm household model is developed and estimated to project ex ante effects of introducing transgenic rice on farm households¡¯ nutritional status in Bangladesh. Assuming the yield effects of transgenic rice are similar to that of previous high yield varieties, the model estimates the profit effect of introducing transgenic rice. The profit effect is then translated into effects on farmers¡¯ consumption decisions. The results indicate that the total profit elasticity with respect to the percentage of rice area in high yield variety is 0.08. The calorie elasticity with respect to the percentage of rice area in HYV ranges from 0.062 in non-poor to 0.074 in poor households, and the protein elasticity ranges from 0.075 in non-poor to 0.084 in poor. Therefore, the results indicate that transgenic rice is likely to play a significant role in improving farm households¡¯ nutritional status in terms of total calorie/protein intake.
Symmetry of Quantum Torus with Crossed Product Algebra
Creators: name: Chang-Young, Ee
name: Kim, Hoil
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we study the symmetry of quantum torus with the concept of crossed product algebra. As a classical counterpart, we consider the orbifold of classical torus with complex structure and investigate the transformation property of classical theta function. An invariant function under the group action is constructed as a variant of the classical theta function. Then our main issue, the crossed product algebra representation of quantum torus with complex structure under the symplectic group is analyzed as a quantum version of orbifolding. We perform this analysis with Manin's so-called model II quantum theta function approach. The symplectic group Sp(2n,Z) satisfies the consistency condition of crossed product algebra representation. However, only a subgroup of Sp(2n,Z) satisfies the consistency condition for orbifolding of quantum torus.
description: LaTeX 17pages, changes in section 3 on crossed product algebra
Growth Expectations and Decision to Renovate a Golf Course: An Application of a Censored Model with the Simultaneity Test
Creators: name: Bilgic, Abdulbaki
name: Florkowski, Wojciech J.
name: Bilgic, Abdulbaki
name: Florkowski, Wojciech J.
Publisher: name: Unknown
Year: 2006
Subjects: Research Methods/ Statistical Methods

description: Golf course renovation and expected business growth were examined. Endogeneity test on the renovation decision and a censored expected growth model rejected the hypothesis of simultaneity and decisions were modeled separately. Key determinants for both decisions were golf facility features, but not respondents' characteristics.
Real-space RG, error correction and Petz map
Creators: name: Furuya, Keiichiro
name: Lashkari, Nima
name: Ouseph, Shoy
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: There are two parts to this work: First, we study the error correction properties of the real-space renormalization group (RG). The long-distance operators are the (approximately) correctable operators encoded in the physical algebra of short-distance operators. This is closely related to modeling the holographic map as a quantum error correction code. As opposed to holography, the real-space RG of a many-body quantum system does not have the complementary recovery property. We discuss the role of large $N$ and a large gap in the spectrum of operators in the emergence of complementary recovery. Second, we study the operator algebra exact quantum error correction for any von Neumann algebra. We show that similar to the finite dimensional case, for any error map in between von Neumann algebras the Petz dual of the error map is a recovery map if the inclusion of the correctable subalgebra of operators has finite index.
description: 57 pages, 16 figures
Hawking Radiation from Acoustic Black Holes, Short Distance and Back-Reaction Effects
Creators: name: Balbinot, R.
name: Fabbri, A.
name: Fagnocchi, S.
name: Parentani, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using the action principle we first review how linear density perturbations (sound waves) in an Eulerian fluid obey a relativistic equation: the d'Alembert equation. This analogy between propagation of sound and that of a massless scalar field in a Lorentzian metric also applies to non-homogeneous flows. In these cases, sound waves effectively propagate in a curved four-dimensional ''acoustic'' metric whose properties are determined by the flow. Using this analogy, we consider regular flows which become supersonic, and show that the acoustic metric behaves like that of a black hole. The analogy is so good that, when considering quantum mechanics, acoustic black holes should produce a thermal flux of Hawking phonons. We then focus on two interesting questions related to Hawking radiation which are not fully understood in the context of gravitational black holes due to the lack of a theory of quantum gravity. The first concerns the calculation of the modifications of Hawking radiation which are induced by dispersive effects at short distances, i.e., approaching the atomic scale when considering sound. We generalize existing treatments and calculate the modifications caused by the propagation near the black hole horizon. The second question concerns backreaction effects. We return to the Eulerian action, compute second order effects, and show that the backreaction of sound waves on the fluid's flow can be expressed in terms of their stress-energy tensor. Using this result in the context of Hawking radiation, we compute the secular effect on the background flow.
description: 60 pages, 6 figures. Review submitted to "La Rivista del Nuovo Cimento"
Sound waves in strongly coupled non-conformal gauge theory plasma
Creators: name: Benincasa, Paolo
name: Buchel, Alex
name: Starinets, Andrei O.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using gauge theory/gravity duality we study sound wave propagation in strongly coupled non-conformal gauge theory plasma. We compute the speed of sound and the bulk viscosity of N=2^* supersymmetric SU(N_c) Yang-Mills plasma at a temperature much larger than the mass scale of the theory in the limit of large N_c and large 't Hooft coupling. The speed of sound is computed both from the equation of state and the hydrodynamic pole in the stress-energy tensor two-point correlation function. Both computations lead to the same result. Bulk viscosity is determined by computing the attenuation constant of the sound wave mode.
description: 37 pages, Nuclear Physics B version
Determinants of Entrepreneurship and Small Business Activity: A Two-Stage Regression Analysis
Creators: name: Singh-Knights, Doolarie
name: Smith, Dennis K.
name: Budumuru, Yoganand
name: Singh-Knights, Doolarie
name: Smith, Dennis K.
name: Budumuru, Yoganand
Publisher: name: Unknown
Year: 2006
Subjects: Financial Economics

description: We developed a theoretical model of state-level entrepreneurship activity, as measured independently by firm creation, patent applications and presence of 500Inc. firms. We estimated the roles of innovations, financial capital, state resources and entrepreneurial climate. The empirical results suggest all of these factors are important in explaining some measure of entrepreneurial activity. Most importantly, we find that there is no single set of variables most important in explaining the three different measures of entrepreneurial activity used in this analysis, that is, with the exception of entrepreneurial climate. The parameter estimate for entrepreneurial climate was significantly different from zero for all the measures of entrepreneurial activity used.
Impact of Coastal Hazards on Residents Spatial Accessibility to Health Services
Creators: name: Balomenos, Georgios P.
name: Hu, Yujie
name: Padgett, Jamie E.
name: Shelton, Kyle
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: The mobility of residents and their access to essential services can be highly affected by transportation network closures that occur during and after coastal hazard events. Few studies have used geographic information systems coupled with infrastructure vulnerability models to explore how spatial accessibility to goods and services shifts after a hurricane. Models that explore spatial accessibility to health services are particularly lacking. This study provides a framework to examine how the disruption of transportation networks during and after a hurricane can impact a residents ability to access health services over time. Two different bridge closure conditions, inundation and structural failure, along with roadway inundation are used to quantify post-hurricane accessibility at short- and long-term temporal scales. Inundation may close a bridge for hours or days, but a structural failure may close a route for weeks or months. Both forms of closure are incorporated using probabilistic vulnerability models coupled with GIS-based models to assess spatial accessibility in the aftermath of a coastal hazard. Harris County, an area in Southeastern Texas prone to coastal hazards, is used as a case study. The results indicate changes in the accessibility scores of specific areas depending on the temporal scale of interest and intensity of the hazard scenario. Sociodemographic indicators are also examined for the study region, revealing the populations most likely to suffer from lack of accessibility. Overall, the presented framework helps to understand how both short-term functionality loss and long-term damage affect access to critical services such as health care after a hazard. This information, in turn, can shape decisions about future mitigation and planning efforts, while the presented framework can be expanded to other hazard-prone areas.
Mimesis
Creators: name: González Valerio, María Antonia
Publisher: name: Online Encyclopedia Philosophy of Nature
Year: 2021

description: The concept of mimesis is situated mainly in the field of aesthetics. Its relevance to the philosophy of nature must be considered from an aesthetic and historical perspective, since it has constantly been present in the histories of philosophy and art. This text focuses only on some important moments: Plato and Aristotle; modernity (essentially German idealism and Romanticism); the modern concept of representation as distinct from mimesis; and the debate that occurred during the twentieth century regarding the ontological and aesthetic status of mimesis. The aim of this article is to provide a theoretical framework that can place the concept of mimesis within the current debate surrounding the philosophy of nature, by showing the different relations that this concept has established between art and nature. For this purpose, the concept of mimesis is identified here by two of its fundamental attributes: its ontological commitment to name and to signify the world, and its construction of meaning depending on internal coherence.
description: Online Encyclopedia Philosophy of Nature, 2019
Controlling Dairy Nitrogen Emissions: A Dynamic Analysis of Herd Adjustment, Ground Water Discharges, and Air Emissions
Creators: name: Baerenklau, Kenneth A.
name: Nergis, Nermin
name: Baerenklau, Kenneth A.
name: Nergis, Nermin
Publisher: name: Unknown
Year: 2006

description: A micro-dynamic model of a livestock-crop operation is calibrated with data from a representative dairy in California's Central Valley and is used to predict the effects of regulations designed to reduce nitrogen emissions. Policy simulations clarify the importance of dynamic elements and demonstrate three main results: (1) dairies are unresponsive to pollution charges unless they are relatively large and financially burdensome for farmers; (2) regulations aimed at controlling only nitrate leaching will cause significant increases in ammonia emissions; and (3) mitigating both nitrogen problems with emissions taxes involves substantial reductions in both herd size and farm profit.
The Reverse Auction: A New Approach to Experimental Auction Valuation
Creators: name: Corrigan, Jay R.
name: Corrigan, Jay R.
Publisher: name: Unknown
Year: 2006
Subjects: Demand and Price Analysis

description: I propose an alternative approach to auction valuation in which participants indicate the quantity they wish to buy at a series of prices, with the understanding that one will be randomly chosen as the binding price. This technique allows researchers to estimate entire demand curves as well as own-price elasticities.
A MODEL OF GRAIN STORAGE AND HEDGING BY FARMERS
Creators: name: Hildreth, Clifford
name: Hildreth, Clifford
Publisher: name: Unknown
Year: 1976
Subjects: subject: Marketing
subject: FOS: Economics and business

description: The model analyzed represents circumstances as faced by a grain farmer when his harvest is known and he is making storage and hedging decisions. The scope of the analysis is limited in several respects. A one-period model is employed; only a limited number of options are recognized; and interrelations between the grain enterprise and other economic activities of the decision maker are neglected.
Impedance analysis of milk quality using functionalized polyamide textile-based sensor
Creators: name: M. Stojanovic, Goran
name: Sinha, Ankita
name: Ali, Adnan E.
name: Jeoti, Varun
Publisher: name: figshare
Year: 2022
Subjects: subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Present paper demonstrates design and characterization of a textile based microfluidic chip sensor for the detection of milk adulteration through measuring the real part of the impedance and impedance phase angle. Polyamide (PA) based textile fabric was chemically functionalized with polyaniline and titanium dioxide nanoparticles (PANI/TiO2) nanocomposite and embedded in the microfluidic chip. Prototyping of microfluidic chip was performed by xurography and hot lamination using polyvinyl chloride foils. Morphological and chemical properties of fabricated textile-based PA-PANI/TiO2 chip sensor were evaluated by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). Quality of milk was accessed with fabricated textile sensor using cow and goat milk samples. The electrochemical impedance spectroscopy (EIS) was applied to detect the change in resistance and phase angle of pure and diluted milk. The developed PA-PANI/TiO2 chip sensor acted as a variable resistor that was able to identify adulterations and spoilage of the milk samples with sensitivity of 0.06 degrees of phase angle variation per % of water dilution. Our work promises that application of textile electronics could be efficiently exploited for food safety, point-of-care and environment monitoring applications.
Cell junctions and oral health
Creators: name: Samiei, Mohammad
name: Ahmadian, Elham
name: Eftekhari, Aziz
name: Eghbal, Mohammad Ali
name: Rezaie, Fereshte
name: Vinken, Mathieu
Publisher: name: Technische Universität Dortmund
Year: 2019
Subjects: subject: Tight junction
subject: Gap junction
subject: Anchoring junction
subject: Oral health
subject: Oral disease
subject: 610

description: The oral cavity and its appendices are exposed to considerable environmental and mechanical stress. This frequently involves cell junctions, which are goalkeepers of tissue homeostasis. Among those, gap junctions permit the exchange of compounds between cells, thereby controlling processes such as cell growth and differentiation. Tight junctions restrict paracellular transportation and inhibit movement of integral membrane proteins between the different plasma membrane poles. Adherens junctions attach cells one to another and provide a solid backbone for resisting to mechanistical stress. The integrity of oral mucosa, normal tooth development and saliva secretion depends on the proper function of all these types of cell junctions. Furthermore, deregulation of junctional proteins and/or mutations in their genes can alter tissue functioning and may result in various human disorders, including dental and periodontal problems, salivary gland malfunction, hereditary and infectious diseases as well as tumorigenesis. The present paper reviews the role of cell junctions in the (patho)physiology of the oral cavity and its appendices.
description: EXCLI Journal;Vol. 18 2019
End Invariants for $\SL(2,C)$ characters of the one-holed torus
Creators: name: Tan, Ser Peow
name: Wong, Yan Loi
name: Zhang, Ying
Publisher: name: arXiv
Year: 2005
Subjects: subject: Geometric Topology (math.GT)
subject: Differential Geometry (math.DG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 57M05; 30F60; 20H10; 37F30

description: We define and study the set ${\mathcal E}(ρ)$ of end invariants of a $\SL(2,C)$ character $ρ$ of the one-holed torus $T$. We show that the set ${\mathcal E}(ρ)$ is the entire projective lamination space $\mathscr{PL}$ of $T$ if and only if (i) $ρ$ corresponds to the dihedral representation, or (ii) $ρ$ is real and corresponds to a SU(2) representation; and that otherwise, ${\mathcal E}(ρ)$ is closed and has empty interior in $\mathscr{PL}$. For real characters $ρ$, we give a complete classification of ${\mathcal E}(ρ)$, and show that ${\mathcal E}(ρ)$ has either 0, 1 or infinitely many elements, and in the last case, ${\mathcal E}(ρ)$ is either a Cantor subset of $\mathscr{PL}$ or is $\mathscr{PL}$ itself. We also give a similar classification for "imaginary" characters where the trace of the commutator is less than 2. Finally, we show that for discrete characters (not corresponding to dihedral or SU(2) representations), ${\mathcal E}(ρ)$ is a Cantor subset of $\mathscr{PL}$ if it contains at least three elements.
description: 24 pages, 6 figures
The Promising Chaos Model Establishment of Weak Signal Detection System
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 80501 Distributed and Grid Systems
subject: FOS: Computer and information sciences

description: In optical systems, the energies are very low if the photo source is divided through polarization beam splitters. Most of the energies are submerged in the noise and the useful signal is even weaker than the noise. Therefore we must detect the weak useful signal from the strong noise in order to better understand the radiant features of weak signals. Nowadays, there are a lot of methods to be used in chaotic system to detect weak signals among which the Duffing system is often used. In this paper we conduct researches on several typical chaotic systems and their dynamic properties are analyzed. The purpose is to find promising chaotic model to detect weak signals and compare the detection precision with that of the Duffing system. The simulation results show that the high order chaotic system can detect the weak signal amplitude and the detected signal-to-noise ratio is even lower than that of the Duffing system. It is also shown that the presented method is feasible.
Rhomboid antigens are promising targets in the vaccine development against Toxoplasma gondii
Creators: name: Foroutan, Masoud
name: Zaki, Leila
name: Tavakoli, Sanaz
name: Soltani, Shahrzad
name: Taghipour, Ali
name: Ghaffarifar, Fatemeh
Publisher: name: Technische Universität Dortmund
Year: 2019
Subjects: subject: Toxoplasma gondii
subject: Rhomboid
subject: Vaccines
subject: Immunization
subject: Adjuvant
subject: 610

description: Toxoplasma gondii (T. gondii) is an obligate intracellular parasite with worldwide distribution. It is estimated that near one-third of the people around the globe are latently seropositive for the parasite. Since the current common drugs are incapable in the elimination of parasites within tissue cysts, the development of an effective vaccine has high priority for researchers to limit the infection. During recent years, non-stop efforts of scientists have made great progress in the identification and development of T. gondii candidate vaccines. However, there is a lack of a commercially licensed vaccine for human application yet. Rhomboid proteases (ROMs) are a class of serine proteases that have an important role in the invasion of the parasites that can be considered as a new target for vaccine strategy. They also play critical roles in mitochondrial fusion and growth factor signaling, allowing the parasite to completely enter into the host cell. In the current review, we have summarized the recent progress regarding the development of ROM-based vaccines against acute and chronic T. gondii infection in animal models.
description: EXCLI Journal;Vol. 18 2019
Interaction of process parameters, forming mechanisms, and residual stresses in single point incremental forming
Creators: name: Maaß, Fabian
name: Hahn, Marlon
name: Tekkaya, A. Erman
Publisher: name: Technische Universität Dortmund
Year: 2020
Subjects: subject: Single point incremental forming
subject: Forming mechanisms
subject: Residual stress state
subject: 620
subject: 670
subject: Blechumformen
subject: Umformen
subject: Eigenspannung

description: The residual stress state of a sheet metal component manufactured by metal forming has a significant influence on the mechanical properties, and thus determines the time until the component fails, especially for dynamic loads. The origin of the resulting residual stress state of incrementally formed parts with regard to the forming mechanisms of shearing, bending, and the normal stress component is still under investigation. The relationship between the process parameters, the forming mechanisms, and the resulting residual stress state for a complex part geometry manufactured by single point incremental forming (SPIF) is presented in this publication. For this purpose, a validated numerical process model is used to analyze the influence of the step-down increment Δz for truncated cones on the characteristics of the forming mechanisms and the resulting residual stress state. For the first time the forming mechanisms are evaluated numerically on both sides of the formed component. A relationship between the process parameters, forming mechanisms, residual stresses, and the mechanical properties of an incrementally formed component is shown. Shearing-induced hardening is identified as a relevant influence on the residual stress state of cones.
description: Metals;10(5)
Extremal quantile regression
Creators: name: Chernozhukov, Victor
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistics Theory (math.ST)
subject: Econometrics (econ.EM)
subject: FOS: Mathematics
subject: FOS: Economics and business
subject: 62G32, 62G30, 62P20 (Primary) 62E30, 62J05 (Secondary)

description: Quantile regression is an important tool for estimation of conditional quantiles of a response Y given a vector of covariates X. It can be used to measure the effect of covariates not only in the center of a distribution, but also in the upper and lower tails. This paper develops a theory of quantile regression in the tails. Specifically, it obtains the large sample properties of extremal (extreme order and intermediate order) quantile regression estimators for the linear quantile regression model with the tails restricted to the domain of minimum attraction and closed under tail equivalence across regressor values. This modeling setup combines restrictions of extreme value theory with leading homoscedastic and heteroscedastic linear specifications of regression analysis. In large samples, extreme order regression quantiles converge weakly to \argmin functionals of stochastic integrals of Poisson processes that depend on regressors, while intermediate regression quantiles and their functionals converge to normal vectors with variance matrices dependent on the tail parameters and the regressor design.
description: Published at http://dx.doi.org/10.1214/009053604000001165 in the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
A SUMMARY OF THE LITERATURE ON SHIFT-SHARE ANALYSIS
Creators: name: Selting, Anne C.
name: Loveridge, Scott
name: Selting, Anne C.
name: Loveridge, Scott
Publisher: name: Unknown
Year: 1992
Subjects: Community/Rural/Urban Development

description: Shift-share analysis is a method of decomposing regional income or employment growth patterns into expected (share) and differential (shift) components. Since its inception in the 1940s, over seventy academic contributions have criticized, defended, and extended the original concept. These contributions are summarized, and research needs for the future are identified.
Transgenerational influence of parental morphine exposure on pain perception, anxiety-like behavior and passive avoidance memory among male and female offspring of Wistar rats
Creators: name: Ahmadian-Moghadam, Hamid
name: Sadat-Shirazi, Mitra-Sadat
name: Seifi, Fereshteh
name: Niknamfar, Saba
name: Akbarabadi, Ardeshir
name: Toolee, Heidar
name: Zarrindast, Mohammad-Reza
Publisher: name: Technische Universität Dortmund
Year: 2019
Subjects: subject: Drug administration
subject: Epigenetic
subject: Behavior
subject: Morphine
subject: 610

description: Accumulating evidence suggests that epigenetic mechanisms play an important role in the formation and maintenance of memory within the brain. Moreover, the effect of parental drug-exposure before gestation on behavioral state of offspring has been little studied. The main objective of the current study is to evaluate the effect of parental morphine exposure on avoidance memory, morphine preference and anxiety-like behavior of offspring. The total of 32 males and 32 females were used for mating. The animals were treated with morphine. The offspring according to their parental morphine treatment was divided into four groups (n=16) including paternally treated, maternally treated, both of parents treated and naïve animals. The pain perception, anxiety-like behavior, and avoidance memory were evaluated in the offspring. In the current study, the total of 256 offspring was used for the experiments (4 tasks × 4 groups of offspring × 8 female offspring × 8 male offspring). The finding revealed that the avoidance memory and visceral pain were reduced significantly in male and female offspring with at least one morphine-treated parent. Moreover, anxiety-like behavior was reduced significantly in the male offspring with at least one morphine-treated parent. While anxiety-like behavior was increased significantly in female offspring that were treated by morphine either maternally or both of parents. The data revealed that the endogenous opioid system may be altered in the offspring of morphine-treated parent(s), and epigenetic role could be important. However, analysis of variance signified the important role of maternal inheritance.
description: EXCLI Journal;Vol. 18 2019
Detection of graphene's divergent orbital diamagnetism at the Dirac point
Creators: name: Vallejo, J.
name: Wu, N. J.
name: Fermon, C.
name: Pannetier-Lecoeur, M.
name: Wakamura, T.
name: Watanabe, K.
name: Tanigushi, T.
name: Pellegrin, T.
name: Bernard, A.
name: Daddinounou, S.
name: Bouchiat, V.
name: Guéron, S.
name: Ferrier, M.
name: Montambaux, G.
name: Bouchiat, H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The electronic properties of graphene have been intensively investigated over the last decade, and signatures of the remarkable features of its linear Dirac spectrum have been displayed using transport and spectroscopy experiments. In contrast, the orbital magnetism of graphene, which is one of the most fundamental signature of the characteristic Berry phase of graphene's electronic wave functions, has not yet been measured in a single flake. In particular, the striking prediction of a divergent diamagnetic response at zero doping calls for an experimental test. Using a highly sensitive Giant Magnetoresistance sensor (GMR) we have measured the gate voltage-dependent magnetization of a single graphene monolayer encapsulated between boron nitride crystals. The signal exhibits a diamagnetic peak at the Dirac point whose magnetic field and temperature dependences agree with theoretical predictions starting from the work of Mc Clure \cite{McClure1956}. Our measurements open a new field of investigation of orbital currents in graphene and 2D topological materials, offering a new means to monitor Berry phase singularities and explore correlated states generated by combined effects of Coulomb interactions, strain or moiré potentials.
description: 6 pages 5 figures and supplemental material
Investigation of process control influence on tribological properties of FLM-manufactured components
Creators: name: Hesse, Daniel
name: Stanko, Michael
name: Hohenberg, Patrick
name: Stommel, Markus
Publisher: name: Technische Universität Dortmund
Year: 2020
Subjects: subject: Additive manufacturing
subject: Fused layer modeling
subject: Tribology
subject: Wear
subject: Friction
subject: Pin-on-plate
subject: 620
subject: 670
subject: Rapid Prototyping
subject: Fused Deposition Modeling
subject: Tribologie
subject: Verschleiß
subject: Reibung
subject: Tribometer

description: In recent years, additive manufacturing methods such as Fused Layer Modeling have been continuously improved by industry and research institutions. In many cases, the influence of process control on the mechanical component properties is being investigated. Influencing parameters include the infill and its orientation as well as patterns. Extrusion parameters such as the volume flow, which can be influenced by the speed, the line width, and the layer thickness, and the temperatures, which determine the interlaminar bonding between the lines and layers, are relevant as well. In this contribution, the influence of process control on the tribological properties of cylindrical tribo-test specimens made of polybutylene terephthalate is investigated. Using a reciprocating pin-on-plate tribo-tester, the static and dynamic friction forces as well as the linear wear is determined. The results show a significant influence of the orientation and density of the infill on the tribological properties. Due to the process-specific large degrees of freedom, the advantage of a load-compatible individualisation and consequently the optimisation of tribologically exposed components is given compared to conventional manufacturing processes.
description: J. Manuf. Mater. Process.;4(2)
New results for the fully renormalized proton-neutron quasiparticle random phase approximation
Creators: name: Raduta, C. M.
name: Raduta, A. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A many-body Hamiltonian describing a system of Z protons and N neutrons moving in spherical shell model mean field and interacting among themselves through proton-proton and neutron-neutron pairing and a dipole-dipole proton-neutron interaction of both particle-hole and particle-particle type, is treated within a fully renormalized (FR) pnQRPA approach. Two decoupling schemes are formulated. One of them decouples the equations of motion of particle total number conserving and non-conserving operators. One ends up with two very simple dispersion equations for phonon operators which are formally of Tamm-Dancoff types. For excitations in the (N-1,Z+1) system, Ikeda sum rule is fully satisfied provided the BCS equations are renormalized as well and therefore solved at a time with the FRpnQRPA equations. Next, one constructs two operators ${\cal R}^{\dagger}_{1μ}$, ${\cal R}_{1,-μ}(-)^{1-μ}$ which commutes with the particle total number conserving operators, ${\cal A}^{\dagger}_{1μ}$ and ${\cal A}_{1,-μ}(-)^{1-μ}$, and moreover could be renormalized so that they become bosons. Then, a phonon operator is built up as a linear combination of these four operators. The FRpnQRPA equations are written down for this complex phonon operator and the ISR is calculated analytically. This formalism allows for an unified description of the dipole excitations in four neighboring nuclei (N-1,Z+1),(N+1,Z-1),(N-1,Z-1),(N+1,Z+1). The phonon vacuum describes the (N,Z) system ground state.
description: 24 pages