cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
IoTrace: A Flexible, Efficient, and Privacy-Preserving IoT-enabled Architecture for Contact Tracing
Creators: name: Tedeschi, Pietro
name: Bakiras, Spiridon
name: Di Pietro, Roberto
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Contact tracing promises to help fight the spread of Covid-19 via an early detection of possible contagion events. To this end, most existing solutions share the following architecture: smartphones continuously broadcast random beacons that are intercepted by nearby devices and stored into their local contact logs. In this paper, we propose an IoT-enabled architecture for contact tracing that relaxes the smartphone-centric assumption, and provide a solution that enjoys the following features: (i) it reduces the overhead on the end-user to the bare minimum -- the mobile device only broadcasts its beacons; (ii) it provides the user with a degree of privacy not achieved by competing solutions -- even in the most privacy adverse scenario, the solution provides k-anonymity; and, (iii) it is flexible: the same architecture can be configured to support several models -- ranging from the fully decentralized to the fully centralized ones -- and the system parameters can be tuned to support the tracing of several social interaction models. We also highlight open issues and discuss a number of future research directions.
description: 7 pages
Metastable skyrmion lattices governed by magnetic disorder and anisotropy in $β$-Mn-type chiral magnets
Creators: name: Karube, K.
name: White, J. S.
name: Ukleev, V.
name: Dewhurst, C. D.
name: Cubitt, R.
name: Kikkawa, A.
name: Tokunaga, Y.
name: Rønnow, H. M.
name: Tokura, Y.
name: Taguchi, Y.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Magnetic skyrmions are vortex-like topological spin textures often observed in structurally chiral magnets with Dzyaloshinskii-Moriya interaction. Among them, Co-Zn-Mn alloys with a $β$-Mn-type chiral structure host skyrmions above room temperature. In this system, it has recently been found that skyrmions persist over a wide temperature and magnetic field region as a long-lived metastable state, and that the skyrmion lattice transforms from a triangular lattice to a square one. To obtain perspective on chiral magnetism in Co-Zn-Mn alloys and clarify how various properties related to the skyrmion vary with the composition, we performed systematic studies on Co$_{10}$Zn$_{10}$, Co$_9$Zn$_9$Mn$_2$, Co$_8$Zn$_8$Mn$_4$ and Co$_7$Zn$_7$Mn$_6$ in terms of magnetic susceptibility and small-angle neutron scattering measurements. The robust metastable skyrmions with extremely long lifetime are commonly observed in all the compounds. On the other hand, preferred orientation of a helimagnetic propagation vector and its temperature dependence dramatically change upon varying the Mn concentration. The robustness of the metastable skyrmions in these materials is attributed to topological nature of the skyrmions as affected by structural and magnetic disorder. Magnetocrystalline anisotropy as well as magnetic disorder due to the frustrated Mn spins play crucial roles in giving rise to the observed change in helical states and corresponding skyrmion lattice form.
description: 70 pages, 19 figures
Valuing Animal Welfare Labels with Experimental Auctions: What do we learn from Consumers?
Creators: name: Gracia, Azucena
name: Loureiro, Maria L.
name: Nayga, Rodolfo M.
name: Gracia, Azucena
name: Loureiro, Maria L.
name: Nayga, Rodolfo M.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Consumer/Household Economics
subject: Livestock Production/Industries
subject: animal welfare
subject: consumer preferences
subject: experimental auctions

description: In this paper two types of experimental auctions (endowment and full bidding) are used to elicit consumer preferences towards different labels providing information on animal welfare practices. The three types of labeling schemes evaluated are the comprehensive “animal welfare label”, the “good animal housing”, and the “good human-animal relation and transport conditions”. Our results suggest that there are no statistically significant differences in the elicited values across labelling schemes. However, there are clear differences across auction types. Bids elicited from auctions in which participants were endowed with the product are higher than those from auctions in which participants had to fully bid for the product. Recommendations and policy implications derived from our findings are discussed.
Concepts, applications, and extensions of value chain analysis to livestock systems in developing countries
Creators: name: Rich, Karl M.
name: Baker, Derek
name: Negassa, Asfaw
name: Ross, R. Brent
name: Rich, Karl M.
name: Baker, Derek
name: Negassa, Asfaw
name: Ross, R. Brent
Publisher: name: Unknown
Year: 2009
Subjects: subject: Livestock Production/Industries
subject: Value chain
subject: livestock
subject: developing countries

description: The analysis of value chains has augmented our knowledge on the complexities, inter-linkages, distributional benefits, and institutional arrangements of production and marketing channels in developing countries. However, the analysis remains relatively qualitative and case-specific, with limited ability to rank or assess the impact of alternative interventions or to analyze sufficiently the complex market dynamics and feedbacks present in livestock systems. This paper offers insights on ways to improve the analytical rigor of the value chain methodology that combines both qualitative and quantitative approaches.
Description of mesoscale pattern formation in shallow convective cloud fields by using time-dependent Ginzburg-Landau and Swift-Hohenberg stochastic equations
Creators: name: Monroy, Diana L.
name: Naumis, Gerardo G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: The time-dependent Ginzburg-Landau equation and the Swift-Hohenberg equation, both added with a stochastic term, are proposed to describe cloud pattern formation and cloud regime phase transitions of shallow convective clouds organized in mesoscale systems. The starting point is the Hottovy-Stechmann linear spatio-temporal stochastic model for tropical precipitation, used to describe the dynamics of water vapor and tropical convection. By taking into account that shallow stratiform clouds are close to a self-organized criticallity and that water vapor content is the order parameter, it is observed that sources must have non-linear terms in the equation to include the dynamical feedback due to precipitation and evaporation. The inclusion of this non-linearity leads to a kind of time-dependent Ginzburg-Landau stochastic equation, originally used to describe superconductivity phases. By performing numerical simulations, pattern formation is observed, specially for cellular convective phases. These patterns are much better compared with real satellite observations than the pure linear model. This is done by comparing the spatial Fourier transform of real and numerical cloud fields. Finally, by considering fluctuation terms for the turbulent eddy diffusion we arrive to a Hohenberg-Swift equation. The obtained patterns are much more organized that the patterns obtained from the Ginzburg-Landau equation in the case of closed cellular and roll convection.
description: 11 pages, 7 figures + Supplemental Material (5 pages)
THE SOCIO-ECONOMIC CONSEQUENCES OF THE IMPACT OF CLIMATE CHANGE ON WATER RESOURCES IN SOUTH AFRICA
Creators: name: Juana, James S.
name: Strzepek, Kenneth M.
name: Kirsten, Johann F.
name: Juana, James S.
name: Strzepek, Kenneth M.
name: Kirsten, Johann F.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Consumer/Household Economics
subject: Food Consumption/Nutrition/Food Safety
subject: Productivity Analysis
subject: Climate Change
subject: Water Resources
subject: Sectoral Output
subject: Value Added
subject: Households' Welfare
subject: Computable General Equilibrium

description: Most of the climate change models for South Africa predict a reduction in freshwater availability by 2050, which implies that water availability for sectoral production activities is expected to decline. This decline has an impact on sectoral output, value added and households’ welfare. Using a computable general equilibrium approach, this study investigates the possible impact of global change on households’ welfare. The simulation results show that water scarcity due to global change can potentially lead to a general deterioration in households’ welfare. The poor households, whose incomes are adversely impacted, are the most vulnerable to the consequences of the impact of global change on water resources in South Africa. This vulnerability can only be reduced if welfare policies that maintain food consumption levels for the least and low-income households are implemented
Formation pathway for lonely stripped-envelope supernova progenitors: implications for Cassiopeia A
Creators: name: Hirai, Ryosuke
name: Sato, Toshiki
name: Podsiadlowski, Philipp
name: Vigna-Gomez, Alejandro
name: Mandel, Ilya
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We explore a new scenario for producing stripped-envelope supernova progenitors. In our scenario, the stripped-envelope supernova is the second supernova of the binary, in which the envelope of the secondary was removed during its red supergiant phase by the impact of the first supernova. Through 2D hydrodynamical simulations, we find that $\sim$50-90$\%$ of the envelope can be unbound as long as the pre-supernova orbital separation is $\lesssim5$ times the stellar radius. Recombination energy plays a significant role in the unbinding, especially for relatively high mass systems ($\gtrsim18M_\odot$). We predict that more than half of the unbound mass should be distributed as a one-sided shell at about $\sim$10-100pc away from the second supernova site. We discuss possible applications to known supernova remnants such as Cassiopeia A, RX J1713.7-3946, G11.2-0.3, and find promising agreements. The predicted rate is $\sim$0.35-1$\%$ of the core-collapse population. This new scenario could be a major channel for the subclass of stripped-envelope or type IIL supernovae that lack companion detections like Cassiopeia A.
description: 18 pages, 16 figures, to be submitted to MNRAS, comments welcome
Development and validation of a disease specific quality of life questionnaire for potentially curable patients with carcinoma of the esophagus
Creators: name: Clifton, Joanne Caroline
Publisher: name: University of British Columbia
Year: 2009

description: Objectives: To develop, pre-test and validate a disease specific quality of life (QOL) questionnaire (EQOL) for potentially curable patients with esophageal carcinoma, for use with the EORTC QLQ-C30 questionnaire, assessing treatment associated quality of life. Methods: Questionnaire development Patients enrolled in three centres. Literature reviews, patients, family members, and health care professionals generated 195 items - symptoms (55); emotions (53); physical functioning (17); activities of daily living (ADL) (48); leisure/social (22). 38 patients identified items of importance and assigned importance ratings on a five point Likert scale. Impact scores were calculated as frequency times mean item importance. Item impact scores less than 20/100 were excluded. Pearson's Correlation Co-efficients compared domains with the MOS SF-20. Fifteen items remained in the EQOL. Questionnaire validation Sixty-five patients enrolled in four centres. EORTC QLQ-C30, EQOL, MOS SF-36 and a Global Rating of Change Questionnaire were completed at baseline, one week, one month, three months, and six months after treatment began. Reliability was assessed comparing mean baseline and one week scores. Responsiveness was assessed between mean scores of changed and unchanged patients, and a responsiveness index was calculated. The MOS SF-36 was used for criterion validity. Construct validity included four a priori predictions. Results: Mean scores between baseline and one week for unchanged patients were not significant (p>0.05), except in the physical function domain (p=0.025). Symptom, physical function and social domains were responsive to change at all time intervals (p<0.05). Emotional function was responsive at one and three months, ADL's at one and six months. Magnitude of change was significant when direction of change was stated. Between better and worse, magnitude of change was significant in all domains except at six months in symptoms, emotional and physical domains. The minimal clinically important difference was consistently around 0.5 for all domains. Minimal, moderate and large effect ranges were established. Only two out of 16 time intervals had poor correlations with the MOS SF-36, establishing criterion validity. Of the four a priori predications for construct validity, only the second part of one prediction, in the emotional function domain, was not confirmed. Conclusions: Quality of life can be assessed using the EQOL. Future studies can further test the EQOL where validation was not confirmed.
Inventory and Methodology for Assessing the Impacts of Environmental Regulations in the Agricultural Sector
Creators: name: Nolet, Jean
name: Sauve, Claude
name: Geoffroy, Amelie
name: Sanchez, Richard
name: Nolet, Jean
name: Sauve, Claude
name: Geoffroy, Amelie
name: Sanchez, Richard
Publisher: name: Unknown
Year: 2006
Subjects: subject: Agricultural and Food Policy
subject: Environmental Economics and Policy
subject: Research and Development/Tech Change/Emerging Technologies
subject: Research Methods/ Statistical Methods
subject: environmental issues
subject: competitiveness of primary agriculture
subject: SMART Regulation
subject: agri-environmental regulations
subject: environmental regulatory constraints

description: There is a growing concern about the impact and effectiveness of environmental regulations, specifically impact on the competitiveness of primary agriculture. The objective of this report is to discuss different methodologies and assessment criteria for the evaluation of the impacts of environmental regulations in the agricultural sector; to identify the relevant environmental regulations administered at the federal, provincial and local levels; and an analytical framework to evaluate the future role of regulations and other policy instruments in achieving the desired social, environmental and economic outcomes. This study is a foundation piece for later phases of multi-year research project to develop strategic environmental policy for sustainable agriculture and environment.
Crystallization and jamming in narrow fluidized beds
Creators: name: Cúñez, Fernando David
name: Franklin, Erick de Moraes
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A fluidized bed is basically a suspension of granular material by an ascending fluid in a tube, and it has a rich dynamics that includes clustering and pattern formation. When the ratio between the tube and grain diameters is small, different behaviors can be induced by high confinement effects. Some unexpected and curious behaviors, that we investigate in this paper, are the crystallization and jamming of grains in liquids with velocities higher than that for incipient fluidization, supposed to maintain the grains fluidized. In our experiments, performed in a vertical tube of transparent material, different grains, water velocities, resting times, and velocity decelerations were used. An analysis of the bed evolution based on image processing shows that, after a decreasing flow that reaches a velocity still higher than that for incipient fluidization, grains become organized in lattice structures of high compactness, where they are trapped though with small fluctuations. These structures are initially localized and grow along time, in a similar manner as happens in phase transitions and glass formation. After a certain time, if the liquid velocity is slightly increased, jamming occurs, with grains being completely blocked and their fluctuation disappearing. We show that different lattice structures appear depending on the grain type. Our results provide new insights into fluidization conditions, glass-like formation and jamming.
description: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Phys. Fluids 32, 083303 (2020) and may be found at https://doi.org/10.1063/5.0015410
Joint statistics of amplitudes and phases in Wave Turbulence
Creators: name: Choi, Yeontaek
name: Lvov, Yuri V.
name: Nazarenko, Sergey
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Random Phase Approximation (RPA) provides a very convenient tool to study the ensembles of weakly interacting waves, commonly called Wave Turbulence. In its traditional formulation, RPA assumes that phases of interacting waves are random quantities but it usually ignores randomness of their amplitudes. Recently, RPA was generalised in a way that takes into account the amplitude randomness and it was applied to study of the higher momenta and probability densities of wave amplitudes. However, to have a meaningful description of wave turbulence the RPA properties assumed for the initial fields must be proven to survive over the nonlinear evolution time, and such a proof is the main goal of the present paper. We derive an evolution equation for the full probability density function which contains the complete information about the joint statistics of all wave amplitudes and phases. We show that, for any initial statistics of the amplitudes, the phase factors remain statistically independent uniformly distributed variables. If in addition the initial amplitudes are also independent variables (but with arbitrary distributions) they will remain independent when considered in small sets which are much less than the total number of modes. However, if the size of a set is of order of the total number of modes then the joint probability density for this set is not factorisable into the product of one-mode probabilities. In the other words, the modes in such a set are involved in a ``collective'' (correlated) motion. We also study new type of correlators describing the phase statistics.
description: 27 pages, uses feynmf package
Discussion on Ways of Economic Development in Rural Areas of Anhui Province Based on Cooperatives
Creators: name: Xiao, Mei
name: Xiao, Mei
Publisher: name: Unknown
Year: 2009
Subjects: subject: Community/Rural/Urban Development
subject: Anhui Province
subject: Rural cooperatives
subject: Regional economy
subject: China

description: Taking Xuancheng City in northern Anhui and Fuyang City in southern Anhui as the examples, the economic development status in rural areas of Anhui Province was introduced. Four development modes of rural cooperative economic organizations were analyzed. The main form of “agents leading mode” was “professional cooperative + farmers” and the products were purchased by protective price. The main forms of “leading enterprises driving mode” were “corporation + farmers” or “corporation + association + farmers”. “Leading industry pushing mode” could help to increase the income of farmers by developing leading industry. “Folk forces pushing mode” could help to improve the systematization degree of farmers by folk forces. Two ways were put forward on the economic development in rural areas of Anhui Province. The combination of “folk forces pushing mode” and “agents leading mode” was applicable to the depressed areas in northern Anhui, while the combination of “leading enterprises driving mode” and “leading industry pushing mode” was applicable to developed areas in southern Anhui.
Stability calculations for the ytterbium-doped fiber laser passively mode-locked through nonlinear polarization rotation
Creators: name: Salhi, Mohamed
name: Leblond, Herve
name: Sanchez, Francois
name: Brunel, Marc
name: Hideur, Ammar
Publisher: name: arXiv
Year: 2004
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We investigate theoretically a fiber laser passively mode-locked with nonlinear polarization rotation. A unidirectional ring cavity is considered with a polarizer placed between two sets of a halfwave plate and a quarterwave plate. A master equation is derived and the stability of the continuous and mode-locked solutions is studied. In particular, the effect of the orientation of the four phase plates and of the polarizer on the mode-locking regime is investigated.
Influence of the precursor composition on the resulting absorber properties and defect concentration in Cu2ZnSnSe4 absorbers
Creators: name: Nowak, David
Publisher: name: Zenodo
Year: 2023
Subjects: kesterite absorber
reaction pathway
alloy configuration
defect concentration
solar cell

description: Submitted for publication in Solar Energy Materials & Solar Cells 256 (2023), 112342, https://doi.org/10.1016/j.solmat.2023.112342
Differential Marketing of Agricultural Products Dominated by Rural Cooperative Economic Organizations
Creators: name: Li, Guang-Ming
name: Li, Guang-Ming
Publisher: name: Unknown
Year: 2009
Subjects: subject: Crop Production/Industries
subject: Industrial Organization
subject: Marketing
subject: FOS: Economics and business
subject: Rural cooperative economic organization
subject: Differential marketing
subject: Agricultural product
subject: China

description: Differential marketing is a strategy opposed to competitive convergence mainly characterized by seeking development in differences. Therefore, marketing of agricultural products dominated by rural cooperative economic organizations has an important practical role. Taking Manas County in Xinjiang Province as an example, agricultural marketing system dominated by rural cooperative economic organizations develops rapidly, mainly reflected in ① constructing agriculture industry association based on characteristic industry and superior industry ② establishing professional economic association, ③ setting up professional technique research association based on scientific research institutes and institutions of higher educations, ④ forming professional cooperatives based on grass-roots supply and marketing departments. However, there are still some problems, and differential marketing of agricultural products can improve the cohesion of rural cooperative economic organizations. Four aspects should be paid attention to during the concrete strategy application of differential marketing of agricultural products, which are precisely making target market positioning, promoting pollution-free agricultural products, perfecting benefit affiliating mechanism, and improving information service level.
20200623 longitudinal article supplementary tables.docx
Creators: name: Selvetta Van Santen
name: Olsson, Daniel S.
name: Hammarstrand, Casper
name: Wijnen, Mark
name: Fiocco, Marta
name: Heuvel-Eibrink, Marry M Van Den
name: Gudmundur Johannsson
name: Janssen, Joop A. M. J. L.
name: Aart-Jan Van Der Lelij
name: Neggers S.J.C.M.M.
Publisher: name: figshare
Year: 2020
Subjects: subject: 111706 Epidemiology
subject: FOS: Health sciences
subject: 111299 Oncology and Carcinogenesis not elsewhere classified
subject: FOS: Clinical medicine
subject: 110306 Endocrinology

description: Supplementary tables of ' Body composition and bone mineral density in craniopharyngioma patients: a longitudinal study over 10 years'. 
Analysis on Financing Status of Infrastructure in Agricultural High-tech Demonstration Zone of Yangling City and Application of PPP Mode
Creators: name: Jian-Ling, L.V.
name: Chao, G.E.
name: Jian-Ling, L.V.
name: Chao, G.E.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural Finance
subject: Financial Economics
subject: Research Methods/ Statistical Methods
subject: Resource /Energy Economics and Policy
subject: Infrastructure
subject: PPP mode
subject: Yangling Demonstration Zone
subject: China

description: Financing mode of municipal public utilities in agricultural High-tech Demonstration Zone of Yangling City was mainly divided into five kinds, including financial financing mode, debt financing mode, enterprise accumulation mode, business resources mode, foreign direct investment and private capital financing mode. Due to the single investment subject, narrow financing channel, monopoly management and ineffectiveness of capital utilization in infrastructure financing, PPP mode based on the co-operative financing of public sector and private enterprises was put forward. The financing applications of PPP mode in Yangling Demonstration Zone were discussed either. However, attentions should be paid to establish a benign partnership between government and private sector, and practice positively in the introduction of PPP. The operation mode of PPP mode as well as experience accumulated in bidding design and building construction could play a referential role in the infrastructure construction of Yangling Demonstration Zone and other regions.
How does disk gravity really influence type-I migration ?
Creators: name: Pierens, Arnaud
name: Hure, Jean-Marc
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report an analytical expression for the locations of Lindblad resonances induced by a perturbing protoplanet, including the effect of disk gravity. Inner, outer and differential torques are found to be enhanced compared to situations where a keplerian velocity field for the dynamics of both the disk and the planet is assumed. Inward migration is strongly accelerated when the disk gravity is only accounted for in the planet orbital motion. The addition of disk self-gravity slows down the planet drift but not enough to stop it.
description: 4 pages, accepted for publication in A&A Letters
Commodity-based Trade and Market Access for Developing Country Livestock Products: The Case of Beef Exports from Ethiopia
Creators: name: Rich, Karl M.
name: Perry, Brian D.
name: Kaitibie, Simeon
name: Rich, Karl M.
name: Perry, Brian D.
name: Kaitibie, Simeon
Publisher: name: Unknown
Year: 2009
Subjects: subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: SPS
subject: livestock
subject: market access
subject: system dynamics
subject: Ethiopia

description: While Ethiopia is Africa’s largest livestock producer, sanitary and phytosanitary (SPS) barriers and animal diseases have traditionally constrained market access. A system dynamics model examined the feasibility of a proposed SPS certification system under a number of scenarios. Model results indicate that the system may not be viable for beef exports to Middle Eastern markets. However, the binding constraint is high domestic input costs rather than the costs of SPS compliance. Sensitivity analyses reveal that while investments in feed efficiency and animal productivity would enhance Ethiopia’s export competitiveness, the competitive nature of international beef markets may still prevent market access.
General and exact pressure evolution equation
Creators: name: Toutant, Adrien
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A crucial issue in fluid dynamics is related to the knowledge of the fluid pressure. A new general pressure equation is derived from compressible Navier-Stokes equation. It is argued that this new pressure equation allows unifying compressible, low-Mach and incompressible approaches. Moreover, this equation should be able to replace the Poisson equation in isothermal incompressible fluids. For computational fluid dynamics, it can be seen as an alternative to Lattice Boltzmann methods and as the physical justification of artificial com-pressibility.
Export Implicit Financial Performance: The Case of French Wine Companies
Creators: name: Viviani, Jean-Laurent
name: Viviani, Jean-Laurent
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural Finance
subject: Financial Economics
subject: export
subject: financial measures
subject: performance
subject: wine industry

description: Noting the difficulties of measuring a company’s export performance and especially financial performance, we develop a new measurement approach grounded on modern portfolio theory. The export intensities and the global financial performance of exporting companies being known, this approach allows deducing the export margin ratio, export risk and correlation of domestic activities with export activities. Using a sampling from French companies in the wine industry from 2001-2005, these implicit financial export performance characteristics are estimated. Main results found: export activities permit a better global margin-risk relationship essentially due to diversification gains because export financial performance seems to be inferior to the domestic one for a great majority of companies.
Entrepreneurial Supply Chains and Strategic Collaboration: The Case of Bagòss Cheese in Bagolino, Italy
Creators: name: Amanor-Boadu, Vincent
name: Marletta, Piercarlo
name: Biere, Arlo W.
name: Amanor-Boadu, Vincent
name: Marletta, Piercarlo
name: Biere, Arlo W.
Publisher: name: Unknown
Year: 2009
Subjects: subject: International Development
subject: International Relations/Trade
subject: entrepreneurial supply chain
subject: Bagòss cheese
subject: globalization

description: Many small towns and communities are struggling to sustain their competitiveness in the face of increasing globalization. Yet, through entrepreneurial supply chains, some communities are organizing themselves to forge local solutions to their global challenges. The essence of entrepreneurial supply chains is its ability to facilitate alignment of all participants in the chain, eliminating moral hazard and opportunism risks. It is argued that this governance system and an ability to protect the common assets from infringement by outsiders are necessary for the success of these solutions. The research uses Bagòss cheese, produced in the small Italian village of Bagolino, to illustrate the characteristics of entrepreneurial supply chains and test the effect of the identified necessary conditions for their successful implementation.
Lattice thermal conductivity of disordered NiPd and NiPt alloys
Creators: name: Alam, Aftab
name: Mookerjee, Abhijit
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Numerical calculations of lattice thermal conductivity are reported for the binary alloys NiPd and NiPt. The present work is a continuation of an earlier paper by us [PRB, 72, 214207 (2005)]which had developed a theoretical framework for the calculation of configuration-averaged lattice thermal conductivity and thermal diffusivity in disordered alloys. The formulation was based on the augmented space theorem combined with a scattering diagram technique. In this paper we shall show dependence of the lattice thermal conductivity on a series of variables like phonon frequency, temperature and alloy composition. The temperature dependence of $κ(T)$ and its realtion to the measured thermal conductivity is discussed. The concentration dependence of $κ$ appears to justify the notion of a minimum thermal conductivity as discussed by Kittel, Slack and others. We also study the frequency and composition dependence of the thermal diffusivity averaged over modes. A numerical estimate of this quantity gives an idea about the location of mobility edge and the fraction of states in the frequency spectrum which is delocalized.
description: 23 pages, 18 figures
Nearby quintuple systems Kappa Tucanae and Xi Scorpii
Creators: name: Tokovinin, Andrei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Architecture and parameters of two wide nearby hierarchical systems containing five solar-type stars each, $κ$ Tuc and $ξ$ Sco, are studied. Using Gaia astrometry and photometry, masses are determined from visual orbits and isochrones, effective temperatures from spectra or colors. Both systems are ~2 Gyr old. Their spatial motion corresponds to young disk but does not match any known kinematic group. Internal proper motions relative to the center of mass and radial velocities show that wide ~8 kau outer pairs are bound. No correlation between orbit orientations in the inner subsystems is observed. All masses except one are confined to the narrow range from 0.8 to 1.5 solar. Strongly correlated masses and wide orbits can be explained if those systems formed by fragmentation in relative isolation and their components accreted gas from common source, as expected in a hierarchical collapse. Young moving groups could be formed in similar environments, and many of them contain high-order hierarchies.
description: Accepted by The Astronomical Journal; 9 pages, 8 figures, 5 tables
Willingness to Pay for Improved Milk Sensory Characteristics and Assurances in Northern Kenya Using Experimental Auctions
Creators: name: Wayua, Francis O.
name: Shibia, Mohamed G.
name: Mamo, Moses S.
name: Bailey, DeeVon
name: Coppock, D. Layne
name: Wayua, Francis O.
name: Shibia, Mohamed G.
name: Mamo, Moses S.
name: Bailey, DeeVon
name: Coppock, D. Layne
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: willingness-to-pay
subject: milk
subject: Kenya

description: Pastoralists in northern Kenya may be able to diversify income by selling milk in nearby towns and cities. However, milk sold in open-air markets in communities in northern Kenya is often of low quality in terms of its sensory characteristics. The milk is also often adulterated before sale. These markets are characterized by poor consumers who need to make choices about milk quality with virtually no information other than their own sensory perceptions. These conditions are similar in many parts of the world for many different commodities and products. An examination was undertaken using experimental auctions to determine if consumers in the border town of Moyale, Kenya are willing to pay for enhanced milk sensory characteristics and assurances. The results suggest that even poor consumers are willing to pay for enhanced sensory characteristics and assurances if these can be communicated in a trusted manner. Older, relatively well-informed women are the group most willing to pay the highest prices for milk quality.
Search for Anomalous Kinematics in ttbar Dilepton Events at CDF II
Creators: name: CDF Collaboration
name: Acosta, D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report on a search for anomalous kinematics of ttbar dilepton events in ppbar collisions at sqrt{s}=1.96 TeV using 193 {pb}^{-1} of data collected with the CDF II detector. We developed a new a priori technique designed to isolate the subset in a data sample revealing the largest deviation from standard model (SM) expectations and to quantify the significance of this departure. In the four-variable space considered, no particular subset shows a significant discrepancy and we find that the probability of obtaining a data sample less consistent with the SM than what is observed is 1.0-4.5%.
description: 14 pages, 2 figures
Point Set Voting for Partial Point Cloud Analysis
Creators: name: Zhang, Junming
name: Chen, Weijia
name: Wang, Yuping
name: Vasudevan, Ram
name: Johnson-Roberson, Matthew
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: The continual improvement of 3D sensors has driven the development of algorithms to perform point cloud analysis. In fact, techniques for point cloud classification and segmentation have in recent years achieved incredible performance driven in part by leveraging large synthetic datasets. Unfortunately these same state-of-the-art approaches perform poorly when applied to incomplete point clouds. This limitation of existing algorithms is particularly concerning since point clouds generated by 3D sensors in the real world are usually incomplete due to perspective view or occlusion by other objects. This paper proposes a general model for partial point clouds analysis wherein the latent feature encoding a complete point clouds is inferred by applying a local point set voting strategy. In particular, each local point set constructs a vote that corresponds to a distribution in the latent space, and the optimal latent feature is the one with the highest probability. This approach ensures that any subsequent point cloud analysis is robust to partial observation while simultaneously guaranteeing that the proposed model is able to output multiple possible results. This paper illustrates that this proposed method achieves state-of-the-art performance on shape classification, part segmentation and point cloud completion.
description: IEEE Robotics and Automation Letters (RA-L)
Capture and escape in the elliptic restricted three-body problem
Creators: name: Astakhov, Sergey A.
name: Farrelly, David
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: Dynamical Systems (math.DS)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Several families of irregular moons orbit the giant planets. These moons are thought to have been captured into planetocentric orbits after straying into a region in which the planet's gravitation dominates solar perturbations (the Hill sphere). This mechanism requires a source of dissipation, such as gas-drag, in order to make capture permanent. However, capture by gas-drag requires that particles remain inside the Hill sphere long enough for dissipation to be effective. Recently we have proposed that in the circular restricted three-body problem particles may become caught up in `sticky' chaotic layers which tends to prolong their sojourn within the planet's Hill sphere thereby assisting capture. Here we show that this mechanism survives perturbations due to the ellipticity of the planet's orbit. However, Monte Carlo simulations indicate that the planet's ability to capture moons decreases with increasing orbital eccentricity. At the actual Jupiter's orbital eccentricity, this effects in approximately an order of magnitude lower capture probability than estimated in the circular model. Eccentricities of planetary orbits in the Solar System are moderate but this is not necessarily the case for extrasolar planets which typically have rather eccentric orbits. Therefore, our findings suggest that these extrasolar planets are unlikely to have substantial populations of irregular moons.
description: This is a preprint of an Article accepted for publication in Monthly Notices of the Royal Astronomical Society, (C) 2004 The Royal Astronomical Society
Linking Small Scale Farmers in China with the International Markets: A Case of Apple Export Chains
Creators: name: Zhang, Xiaoyong
name: Qiu, Huanguang
name: Huang, Zhurong
name: Zhang, Xiaoyong
name: Qiu, Huanguang
name: Huang, Zhurong
Publisher: name: Unknown
Year: 2009
Subjects: subject: Demand and Price Analysis
subject: Institutional and Behavioral Economics
subject: Marketing
subject: FOS: Economics and business
subject: supply chain
subject: price transmission
subject: institutions
subject: market integration

description: This study describes how governance mechanisms were formed that link small-scale apple farmers in China with export markets. These institutional innovations have improved the efficiency of price transmission and generated higher profit margins for various actors in the supply chain, in particular for small-scale farmers. Chinese apple exports are highly coordinated through ongoing long term loyal network relationships and vertical integration. Relevant policy implications and further challenges are discussed in the conclusion.
150 years of Mahatma.pdf
Creators: name: Khushalani, Manohar
Publisher: name: figshare
Year: 2020
Subjects: subject: 190499 Performing Arts and Creative Writing not elsewhere classified
subject: FOS: Arts (arts, history of arts, performing arts, music)

description: A review of the festival at IIC _ Gandhi Ki DilliPublished earlier in IIC DIARY
Sanatan Sangeet Sanskriti’s, Words in the Garden, curated by Ashok Vajpeyi, is an annual celebration of Literature, Arts and Ideas, of Delhi, this time as a tribute to Gandhi, it was also capsuled as Bapu ki Dilli.
An Integrated Assessment of Climate Change, Air Pollution, and Energy Security Policy
Creators: name: Bollen, Johannes
name: Hers, Sebastiaan
name: Van Der Zwaan, Bob
name: Bollen, Johannes
name: Hers, Sebastiaan
name: Van Der Zwaan, Bob
Publisher: name: Unknown
Year: 2009
Subjects: subject: Environmental Economics and Policy
subject: Climate Change
subject: Air Pollution
subject: Energy Security
subject: Cost-Benefit Analysis

description: This article presents an integrated assessment of climate change, air pollution, and energy security policy. Basis of our analysis is the MERGE model, designed to study the interaction between the global economy, energy use, and the impacts of climate change. For our purposes we expanded MERGE with expressions that quantify damages incurred to regional economies as a result of air pollution and lack of energy security. One of the main findings of our cost-benefit analysis is that energy security policy alone does not decrease the use of oil: global oil consumption is only delayed by several decades and oil reserves are still practically depleted before the end of the 21st century. If, on the other hand, energy security policy is integrated with optimal climate change and air pollution policy, the world’s oil reserves will not be depleted, at least not before our modeling horizon well into the 22nd century: total cumulative demand for oil then decreases by about 20%. More generally, we demonstrate that there are multiple other benefits of combining climate change, air pollution, and energy security policies and exploiting the possible synergies between them. These benefits can be large: for Europe the achievable CO2 emission abatement and oil consumption reduction levels are significantly deeper for integrated policy than when a strategy is adopted in which one of the three policies is omitted. Integrated optimal energy policy can reduce the number of premature deaths from air pollution by about 14,000 annually in Europe and over 3 million per year globally, by lowering the chronic exposure to ambient particulate matter. Only the optimal strategy combining the three types of energy policy can constrain the global average atmospheric temperature increase to a limit of 3ºC with respect to the pre-industrial level.
A hierarchical analysis of historical processes and phylogeographic patterns in Salvelinus (Pisces: Salmonidae)
Creators: name: Elz, Anna E.
Publisher: name: University of British Columbia
Year: 2009

description: Hybrid zones have been studied extensively over the last two decades, but relatively little attention has focused on the historical processes generating hybrid zones. Phylogeography, a subdiscipline of biogeography, evaluates patterns of genetic variation to infer the processes that have shaped the geographic and demographic histories of species and can provide insight into the historical contingencies that facilitated hybridization. Phylogenetic relationships of char (Pisces: Salvelinus) have suggested that hybridization has been a recurring theme throughout their evolutionary history. In this thesis, I used sequence variation in the mitochondrial DNA (mtDNA) control region to perform a hierarchical phylogeographic study that examined intraspecific, interspecific, and trans-species polymorphisms in Salvelinus. I developed a diagnostic assay that identifies bull trout (S. confluentus) mtDNA clades and revealed the presence of both lineages in two coastal watersheds in British Columbia. Headwater stream capture following the last glaciation is suspected to have facilitated this "double invasion". A nested clade analysis (NCA) was performed to evaluate if a widespread hybrid zone between Dolly Varden (S. malma) and bull trout in northwestern North America resulted from two processes: secondary contact of previously isolated lineages and continuous contact resulting from historical introgression in a shared refuge. Despite ambiguity in the statistical parsimony network, NCA provided evidence of secondary contact between Beringian Dolly Varden and bull trout and introgressed (with bull trout mtDNA) Dolly Varden. In addition, I found a degree of phylogeographic substructure amongst bull trout and introgressed Dolly Varden in the Chehalis Refuge, which suggests that introgression has been geographically localized. In a species-level phylogenetic analysis, the "approximately-unbiased test" was used to compare alternate tree topologies and I found that Arctic char lineages were not monophyletic in relation to Beringian Dolly Varden and bull trout. The consensus parsimony tree and the phylogeographic distribution of lineages suggested that both bull trout and Dolly Varden may have experienced historical contact with different Arctic char lineages. I suggest that hybridization has played a significant evolutionary role in the diversification of char. This work presents the most extensive phylogeographic analysis of Salvelinus to date and provides a comparative framework for both small scale and regional studies in northwestern North America.
Imperfections in the Economics of Public Policy, Imperfections in Markets, and Climate Change
Creators: name: Stern, Nicholas
name: Stern, Nicholas
Publisher: name: Unknown
Year: 2009
Subjects: subject: Public Economics
subject: Public Policy
subject: Climate Change

description: n the last twenty years economics has created much of lasting value and real potential: it has been a very fertile period. But economics has also suffered from what I shall term „collective amnesia‟ covering whole areas of public policy. And on policy and the role of government it has, embarrassingly in my view, swayed with the political winds to the detriment of both our profession and to outcomes. Both the amnesia and the political bending have contributed to the economic crisis of the last year or two and to hostility towards the profession. My purpose here is first to lament the amnesia on theories of public policy in imperfect economies, in short the subject of public economics, to describe the bending of public policy analysis to political vogue, and to indicate some of the consequences. I then describe some of the mechanics of the processes described, in terms of choice of models and patterns of teaching. Finally, I use the example of climate change to illustrate some of the consequences of the amnesia, as well as of the political influence.