cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Assessing the Impact of Sustainability Improvement Options on the Agri-food Supply Chain Governance Structures: Development of an Evaluation Tool
Creators: name: Rota, Cosimo
name: Zanasi, Cesare
name: Reynolds, Nikolai
Publisher: name: CentMA
Year: 2014
Subjects: supply chain governance; agri-food; assessment tool; sustainability

description: The competitiveness of a supply chain is driven by the ability of supply chain governance structures to adapt to the chains’ continuously changing technical and organizational characteristics. The present study addresses the adoption of sustainability improvement options in the area of organization and management in the agri-food sector; within this framework the study proposes a tool for assessing the impact of sustainability oriented processes on the supply chain governance structures, in turn influencing the competitiveness of the supply chain. Two different approaches, proposed by (Gereffi et al., 2005) and (Hobbs and Young, 2000) have been linked to provide a theoretical framework for the tool development. The proposed new conceptual framework links the dimensions defining five different governance structures complexity of transaction, ability to codify and capabilities in the supply-base (Gereffi et al.,) to the product characteristics, regulatory and technology aspects defined by Hobbs and Young as drivers influencing the vertical coordination of supply chains. The method suggested for measuring the relations between improvement options and the chain governance structure is the adoption of experts’ evaluations. This method improves the tool capacity to provide a context-related supply chain governance structure assessment and management.
description: International Journal on Food System Dynamics, Vol 5, No 3 (2014)
The impact of the WTO agricultural negotiating modalities on Southern African Development Community countries
Creators: name: Poonyth, Daneswar
name: Sharma, Ramesh
name: Konandreas, Panos A.
name: Poonyth, Daneswar
name: Sharma, Ramesh
name: Konandreas, Panos A.
Publisher: name: Unknown
Year: 2004
Subjects: International Relations/Trade

description: This paper assesses the likely impact on the agricultural sector of the Southern African Development Community (SADC) countries of the Harbinson modalities, along with the EU and US proposals as alternative scenarios in the context of the ongoing negotiations of the WTO Agreement on Agriculture. Impacts are assessed on a number of indicators, notably government revenue, producer, consumer and total welfare measures and trade flow. Reflecting country- and commodity-specific factors, the three modalities have different impacts on the indicators. The SADC as a whole is found to lose in terms of total welfare under all three proposals. But while this loss under the Harbinson and EU proposals is due to declines in consumer surpluses and government revenues, reduced producer surplus and government revenue explain the loss in total welfare under the US proposal. Thus, the ranking of the modalities differs according to the impact indicator used, revealing important trade-offs in the choice of the modalities. An issue raised is the value of consumer gains relative to producer gains for low-income economies highly dependent on agriculture because for them effective demand for consumption itself depends on incomes generated from increased agricultural activities, which in turn requires sustained gains in producer surpluses. The paper presents a range of results and discusses the trade-offs, with the hope that SADC trade negotiators and policy makers find these to be useful as they negotiate for the final form of the modalities.
Open Data and Open Knowledge Workshop (2024)
Creators: name: GEO Knowledge Hub
Publisher: name: GEO Knowledge Hub
Year: 2024
Subjects: ODOK
Workshop
GEO Community event
Open Data
Open Knowledge

description: The Open Data and Open Knowledge (ODOK) event is a key gathering within the GEO Community, driven by the community. It brings together various stakeholders to align, update, and discuss the technological aspects of GEO's Open Data and Open Knowledge initiatives. 
In 2023, during its inaugural edition, ODOK was widely praised across the GEO Community and deemed an absolute success. Its outcomes have been extensively discussed within the GEO Community, influencing the work of various working groups (e.g., Data and Knowledge Working Group) and special task forces like the GEO Infrastructure Development Task Team (GIDTT). This success should inspire confidence and excitement for the upcoming 2024 event, where we aim to maintain this high standard of excellence. 
Sessions of the ODOK 2024:

Opening
Advancement of Open Knowledge in GEO: the journey towards user engagement
Space based Data Advancement on Data Providers
In-Situ data. Data Sharing and re-usability: Enhancing Discoverability, Accessibility and Utilization
Usage of UAVs – in between Space and In situ
Open Knowledge and Youth
Open Knowledge and National GEOs
Indigenous Knowledge
Agriculture and Food Security
Water and Land sustainability
Weather & Disaster Resilience
Ecosystem - Biodiversity and Carbon Management
Climate, Energy and Urbanization
One Health
Closing
All the workshop materials from the Open Data and Open Knowledge (ODOK) Workshop held in Hangzhou, China on 25-26th September are included in this knowledge package. 
Each knowledge resource corresponds to a specific session during the ODOK workshop.
ICT, Innovation and Knowledge Challenges as seen by a World Conference of Experts
Creators: name: Pereira, Jose Francisco Aguilar
name: Zazueta, Fedro S.
Publisher: name: CentMA
Year: 2015
Subjects: IT; agriculture; innovation; world conference

description: The World Conference on Computers in Agriculture (WCCA), held in San Jose Costa Rica in 2014, provided a forum where professionals from different disciplines exchanged research finding and experience on the use of ICT in a wide variety of contexts. This special issue is a collection of manuscripts by experts in agriculture and food related disciplines presenting the results of their research and experience on uses of ICT, which although not comprehensive in their scope, partially address the issues discussed in the editorial.
description: International Journal on Food System Dynamics, Vol 5, No 4 (2014): Special issue: Challenge of IT, Innovation and Knowledge
An evaluation of the environmental care orientation of deciduous fruit producers in the Western Cape
Creators: name: Van Dijk, T.
name: Kleynhans, Theo E.
name: Van Dijk, T.
name: Kleynhans, Theo E.
Publisher: name: Unknown
Year: 2004
Subjects: Crop Production/Industries
Environmental Economics and Policy

description: A classification system developed to evaluate the environmental care orientation of companies and, more specifically, their strategies to deal with the environmental care requirements prescribed by the market was applied to the deciduous fruit sector in the Western Cape. A survey was done to determine the attitude towards and status of, environmental care activities amongst deciduous fruit producers who have already obtained Eurepgap certification or who are busy preparing for the certification audit. A questionnaire was used and the responses were judged in terms of the guidelines of the classification system. The nature of the typical South African - European deciduous fruit export supply chain is that South African producers desire to supply the retail market at higher prices than that of the wholesale market. The producers are then confronted with the stringent environmental care requirements of the retail chains, who use the environmental care product image aggressively as a selling point in the retail market, acting like typical Class III market oriented institutions. The classification shows that the majority of producers try to comply with these requirements with minimum effort (Class I). The more progressive producers accept them as good agricultural practices to increase their production efficiency. (Class II). Some farmers participate in a comprehensive Integrated Crop Management (ICM) system to establish a culture of environmental care at farm level in a more efficient way. ICM implementation also helps to prepare proactively for possible changes in the environmental care requirements of individual retail chains. This seems to be the more effective strategy for the primary producer.
Substitution of fertiliser with poultry manure: Is this economically viable?
Creators: name: Mkhabela, Thulasizwe S.
name: Mkhabela, Thulasizwe S.
Publisher: name: Unknown
Year: 2004
Subjects: Crop Production/Industries

description: Rapid expansion of the KwaZulu-Natal poultry industry has resulted in poultry manure and litter production that in certain areas exceeds the potential for use in crop production. If land application exceeds crop requirements, manure production may result in environmental damage. In this study, potential manure surpluses in intensive poultry producing KwaZulu-Natal areas were quantified. The costs of transferring such surpluses to manure-deficient areas were compared with the economic value of poultry manure as fertiliser. Estimates of potential arable land and pasture for spreading manure took both dairy and feedlot manure production into account. Use of manure surpluses by transfer was found to be economically viable. Public policy actions are needed, however, to promote such transfer.
Measuring orbital interaction using quantum information theory
Creators: name: Rissler, J.
name: Noack, R. M.
name: White, S. R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Quantum information theory gives rise to a straightforward definition of the interaction of electrons $I_{p,q}$ in two orbitals $p$, $q$ for a given many-body wave function. A convenient way to calculate the von Neumann entropies needed is presented in this work, and the orbital interaction $I_{p,q}$ is successfully tested for different types of chemical bonds. As an example of an application of $I_{p,q}$ beyond the interpretation of wave functions, $I_{p,q}$ is then used to investigate the ordering problem in the density-matrix renormalization group.
description: 26 pages, 14 figures
Conjunctive Knowledge of environment-related Consumption
Creators: name: Jürss, Sebastian
name: Eichhorn, Thomas
Publisher: name: Soziologie und Nachhaltigkeit
Year: 2021

description: Die umweltsoziologische Forschung nutzt das Konstrukt des Umweltbewusstseins, um individuelles Umwelthandeln zu erklären. Aus Sicht der Praxistheorie wird dabei jedoch lediglich das kommunizierbare Wissen der Akteure berücksichtigt. Darüber hinaus verfügen diese Akteure jedoch auch über nicht-kommunizierbares Wissen, welches für ihre Handlungspraxis von Bedeutung ist. In diesem Beitrag untersuchen wir, in welches nicht-kommunizierbare Wissen Umweltbewusstsein eingebettet ist und dadurch seine weitere Bedeutung bezieht. In einer Sekundäranalyse werten wir Gruppendiskussionen zwischen Nutzer*innen der sog. Sharing Economy aus, um dieser Frage nachzugehen. Die Sharing Economy stellt hierbei einen speziellen Fall umweltbezogenen Konsums dar, der von ihren Nutzer*innen oft als Möglichkeit zur Reduktion von Umweltbelastungen wahrgenommen wird. Wir verwenden die Dokumentarische Methode nach Ralf Bohnsack, um vier Orientierungsrahmen der Nutzer*innen auszuarbeiten, welche ihr nicht-kommunizierbares Wissen abbilden. Im Anschluss diskutieren wir Gemeinsamkeiten und Widersprüche zu ihrem kommunizierbaren Wissen sowie die Relevanz der Betrachtung beider Aspekte für die umweltsoziologische Forschung. Environmental sociological research uses the construct of environmental consciousness to explain individuals‘ decisions relating to the ecological environment of humans. From a practice theory perspective, environmental consciousness takes only such knowledge into account that can be communicated by actors. Additionally, actors also have non-communicative knowledge that is nonetheless relevant for their practice. In this article, we ask in what kind of non-communicative knowledge environmental consciousness is embedded and derives its meaning from. To address this question, we use group discussions between users of the sharing economy in a secondary analysis. The sharing economy is a specific case of environment-related consumption opportunity that users often perceive as a chance to reduce environmental stress. Applying the Documentary Method of Ralf Bohnsack, we work out four frameworks that reflect users‘ non-communicative knowledge of the sharing economy. We point out similarities and contradictions between communicative and non-communicative knowledge elements and discuss the relevance of considering both types of knowledge for environmental sociological research. (peer reviewed)
description: Soziologie und Nachhaltigkeit, Bd. 7 Nr. 1 (2021): Klima der Nachhaltigkeit II
Probing the equation of state of neutron-rich matter with intermediate energy heavy-ion collisions
Creators: name: Li, Bao-An
name: Chen, Lie-Wen
name: Ko, Che Ming
name: Steiner, Andrew W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: Astrophysics (astro-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Nuclear reactions induced by stable and/or radioactive neutron-rich nuclei provide the opportunity to pin down the equation of state of neutron-rich matter, especially the density ($ρ$) dependence of its isospin-dependent part, i.e., the nuclear symmetry energy $E_{\rm sym}$. A conservative constraint, $32(ρ/ρ_{0})^{0.7} < E_{\rm sym}(ρ) < 32(ρ/ρ_{0})^{1.1}$, around the nuclear matter saturation density $ρ_0$ has recently been obtained from the isospin diffusion data in intermediate energy heavy-ion collisions. We review this exciting result and discuss its consequences and implications on nuclear effective interactions, radii and cooling mechanisms of neutron stars.
description: 10 pages. Invited talks at (1) International Workshop on Nuclear Multifragmentation, Nov. 28-Dec. 1, 2005, Catania, Italy and (2) XXIX Symposium on Nuclear Physics, Jan. 3-6, 2006, Cocoyoc, Morelos, Mexico
Fluctuation and dissipation within a deformed holographic model with backreaction
Creators: name: Caldeira, Nathan G.
name: Capossoli, Eduardo Folco
name: Zarro, Carlos A. D.
name: Boschi-Filho, Henrique
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work we study the fluctuation and dissipation of a string attached to a brane in a deformed and backreated AdS-Schwarzschild spacetime. This space is a solution of Einstein-dilaton equations and contains a conformal exponential factor $\exp(k/r^2)$ in the metric. We consider the backreaction contributions coming only from the exponential warp factor on the AdS-Schwarzschild black hole, where the string and brane are in the probe approximation. Within this Lorentz invariant holographic model we have computed the admittance, the diffusion coefficient, the two-point functions and the regularized mean square displacement $s^2_{reg}$. From this quantity we obtain the diffuse and ballistic regimes characteristic of the Brownian motion. From the two-point functions and the admittance, we also have checked the well know fluctuation-dissipation theorem in this set up.
description: V2: 14 pages, 2 figures. Abstract changed. Text improved. Typos corrected. Results unchanged. This version matches the published one in PLB
ASSESSMENT OF HYPERTENSION TREATMENT ADHERENCE AND ITS DETERMINANTS AMONG THE PEOPLE RESIDING IN RURAL AREA OF DISTRICT GAUTAM BUDDHA NAGAR, UTTAR PRADESH- A CROSS-SECTIONAL STUDY
Creators: name: Pawaiya Amit S
name: Nagar Sachin K
name: Gohar Meraj
name: Srivastava Shalini
name: Mahajan Harsh
name: Singh Neeraj Pal
name: Dr. Meraj Gohar
Publisher: name: Zenodo
Year: 2024
Subjects: Adults, Hypertension, Treatment Adherence, Rural.

description: Abstract

Objectives: To study the prevalence of treatment adherence among the known hypertensive individuals in rural community and to identify the determinants for non-adherence to treatment among the study populations. Methods: A community-based cross-sectional study was conducted in the rural field catchment area (Panchayatan) of the Community Medicine Department, School of Medical Sciences & Research, Sharda University, Greater Noida. Adults above 18 years of age residing in rural areas (for more than 6 months) of Greater Noida were considered eligible as the study population. A total of 166 adults who fulfilled the inclusion criteria and had given informed consent were interviewed using a pre-designed pre-validated and reliable/ standardized tool (MMAS) and an 8-item self-response questionnaire to determine the level of medication/treatment adherence. The data were entered and coded in SPSS version 16.0 and analyzed using both inferential and descriptive statistics. Results: In this study, it was observed that out of 166 participants with HTN, 90(54.46%), both male and female, have poor adherence to their medications. It was observed that in participants with the age group of ≥60 years, 49(56.9%) have poor adherence to their medication. There is a significant association between the level of education and treatment adherence, where 59(55.1%) out of 107 literate participants and 42(71.2%) out of 59 illiterate participants, have poor treatment/medication adherence. There is a significant association between education and study participants' medication adherence, with Chi-Square= 10.618, p=0.001119.
Who Cares?
Creators: name: Droste, Luigi
name: Wendt, Björn
Publisher: name: Soziologie und Nachhaltigkeit
Year: 2021

description: Dieser Beitrag untersucht ein bislang in der deutschsprachigen Klimaforschung weithin vernachlässigtes Thema: Die Besorgnis über den Klimawandel in der Bevölkerung. Auf der Grundlage eines zeitdiagnostischen Zugangs, der von der zentralen Bedeutung von Sorgen in der Gegenwartsgesellschaft ausgeht, untersuchen wir in einem ersten Schritt mittels eines internationalen Literaturüberblicks den Forschungsstand zur Wahrnehmung des Klimawandels in der Bevölkerung mit Schwerpunkt auf der Dimension der Klimabesorgnis. Davon ausgehend leiten wir Hypothesen zur Erklärung der klimabedingten Besorgnis ab, die wir mittels einer Mehrebenenanalyse und auf Basis von Daten des European Social Survey empirisch überprüfen. Die Analysen zeigen, dass Klimasorgen relativ weit verbreitet sind, sich jedoch nur in sehr geringem Maß über die Varianz zwischen Ländern erklären lassen. Vielmehr sind verschiedene soziale Prädikatoren auf Individualebene von zentraler Bedeutung. Insbesondere Variablen wie die individuelle Wertorientierung, die Gewissheit über den Klimawandel und die politische Orientierung der Befragten erweisen sich als konsistente und wirkmächtige Korrelate klimawandelbezogener Sorgen. This article investigates a rarely studied issue in climate change research in Germany: the worries about climate change among citizens. Against the backdrop of current sociological diagnoses of the times which suggest worries as of central importance in present society, we first address previous research on worries about climate change by taking a look at international research on climate change perceptions. On this basis, we formulate a set of hypotheses for explaining worries about climate change. We examine these hypotheses empirically by taking on a multi-level approach and utilizing data from the European Social Survey. The analyses show that worry about climate change depends strongly on individual attributes, rather than the country people live in. In particular, individual value orientations, climate change awareness and political attitudes prove to be consistent and important correlates of climate worries. (peer reviewed)
description: Soziologie und Nachhaltigkeit, Bd. 7 Nr. 1 (2021): Klima der Nachhaltigkeit II
The integrability of Virasoro charges for axisymmetric Killing horizons
Creators: name: Chen, Lin-Qing
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Through the analysis of null symplectic structure, we derive the condition for integrable Virasoro generators on the covariant phase space of axisymmetric Killing horizons. A weak boundary condition selects a special relationship between the two temperatures for the putative CFT. When the integrability is satisfied for both future and past horizons, the two central charges are equal. At the end we discuss the physical implications.
description: 19 Pages. v.1: The notes is submitted to match the same releasing day with a separate independent investigation on the same topic. v.2: Add the analysis of boundary term and the result on the past horizon. v.3: minor typos are corrected, add references. v.4: Improved discussion section, published version
Schulz, Hans-Joachim: Ökumenische Glaubenseinheit aus eucharistischer Überlieferung
Creators: name: Basdekis, Athanasios
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 26 Nr. 4 (1977): Ökumenische Rundschau, Band 26, Heft 4
Are wine co-operatives creating value?
Creators: name: Hall, John H.
name: Geyser, J.M.
name: Hall, John H.
name: Geyser, J.M.
Publisher: name: Unknown
Year: 2004
Subjects: Agribusiness

description: This article examines the introduction of Economic Value Added (EVA) as a performance measure that South African wine co-operatives can use to determine whether value has been created for members. A detailed explanation of EVA is given, and the components of EVA are calculated. The EVAs of a number of co-operatives have been calculated and analysed. Important trends have been identified. Recommendations have been made based on the conclusions drawn from these results. Finally, opportunities for potential improvement that could arise from using EVA as a performance measure in wine co-operatives are discussed.
Relaxation in an Extended Bosonic Josephson Junction
Creators: name: Mennemann, Jan-Frederik
name: Mazets, Igor E.
name: Pigneur, Marine
name: Stimming, Hans Peter
name: Mauser, Norbert J.
name: Schmiedmayer, Jörg
name: Erne, Sebastian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a detailed analysis of the relaxation dynamics in an extended bosonic Josephson junction. We show that stochastic classical field simulations using Gross-Pitaevskii equations in three spatial dimensions reproduce the main experimental findings of M. Pigneur et al., Phys. Rev. Lett. 120, 173601 (2018). We give an analytic solution describing the short time evolution through multimode dephasing. For longer times, the observed relaxation to a phase locked state is caused by nonlinear dynamics beyond the sine-Gordon model, induced by the longitudinal confinement potential and persisting even at zero temperature. Finally, we analyze different experimentally relevant trapping geometries to mitigate these effects. Our results provide the basis for future experimental implementations aiming to study nonlinear and quantum effects of the relaxation in extended bosonic Josephson junctions.
description: 12 pages, 9 figures, restructured and extended article format
Planning between cultural paradigms: traditional knowledge and the transition to ecological sustainability
Creators: name: Lertzman, David Adam
Publisher: name: University of British Columbia
Year: 2009

description: Our world is experiencing a crisis of unsustainability with ecological, socioeconomic, and existential dimensions. Thus, planning for the transition to sustainability is a challenge requiring transformation of the dorrunant cultural paradigm. I address this problem of planning between cultural paradigms by examining the discourse between First Nations Traditional Ecological Knowledge (TEK) and Western Science, and identify lessons that contribute to a sounder epistemological basis for planning theory and practice. To link planning theory, sustainability and TEK, I combined literature reviews, interviews and lessons from my experience with First Nations. I derived a cross-cultural analytical framework based on epistemology, cosmology and ontology (ECO), and applied it to planning theory, case studies of the Scientific Panel for Sustainable Forest Practices in Clayoquot Sound and my own professional work. Planning for sustainability must address multiple dimensions. My approach includes biophysical, social and cultural capital, postulating that greater social and cultural capital could decrease consumption of biophysical capital. In this framework "ECO" addresses cultural capital. My analysis of TEK reveals more than just "knowledge," rather a way of life which generates knowledge. I coined the term TEK-Systems (TEKS) to refer to the social and cultural capital, and methodological features of these lotowledge-generating systems. Applying ECO reveals philosophical elements of TEK, that are neglected in the literature. TEKS combine empirical knowledge with other ways of knowing offering alternative models of reality to the cultural mainstream. The Scientific Panel recognized all significant features of TEKS and ECO in my framework, and employed Nuu-Chah-Nulth TEK protocol in their planning model. Various forms of knowledge from wholly different philosophical origins informed complex planning and decision- making process with consensus outcomes. Similarly, the most significant lessons from my professional application was that respect, cultural framing, and community involvement are key professional tools. Planning between cultural paradigms requires recognizing different knowledge systems; including different ways of knowing strengthens planning for sustainability. This approach establishes new terrain for planning theory. It requires inclusive planning and decision- making processes which foster caring, respect and commitment. Enhancing social and cultural capital provides community and spiritual resources for sustainability. Planners need specialized framing to work in these areas.
Orientation and Motion of Water Molecules at Air/Water Interface
Creators: name: Gan, Wei
name: Wu, Dan
name: Zhang, Zhen
name: Wang, Hong-fei
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Analysis of SFG vibrational spectra of OH stretching bands in four experimental configurations shows that orientational motion of water molecule at air/water interface is libratory within a limited angular range. This picture is significantly different from the previous conclusion that the interfacial water molecule orientation varies over a broad range within the vibrational relaxation time, the only direct experimental evidence for ultrafast and broad orientational motion of a liquid interface by Wei et al. [Phys. Rev. Lett. 86, 4799, (2001)] using single SFG experimental configuration.
Deuteron production in AuAu collisions at $\sqrt{s_{NN}} = 7-200$ GeV via pion catalysis
Creators: name: Oliinychenko, Dmytro
name: Shen, Chun
name: Koch, Volker
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study deuteron production using no-coalescence hydrodynamic + transport simulations of central AuAu collisions at $\sqrt{s_{NN}} = 7 - 200$ GeV. Deuterons are sampled thermally at the transition from hydrodynamics to transport, and interact in transport dominantly via $πp n \leftrightarrow πd$ reactions. The measured proton, Lambda, and deuteron transverse momentum spectra and yields are reproduced well for all collision energies considered. We further provide a possible explanation for the measured minimum in the energy dependence of the coalescence parameter, $B_2(\sqrt{s_{NN}})$ as well as for the difference between $B_2(d)$ for deuterons and that for anti-deuterons, $B_2(\bar{d})$.
description: 11 pages, 6 figures
Level crossings in a cavity QED model
Creators: name: Larson, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper I study the dynamics of a two-level atom interacting with a standing wave field. When the atom is subjected to a weak linear force, the problem can be turned into a time dependent one, and the evolution is understood from the band structure of the spectrum. The presence of level crossings in the spectrum gives rise to Bloch oscillations of the atomic motion. Here I investigate the effects of the atom-field detuning parameter. A variety of different level crossings are obtained by changing the magnitude of the detuning, and the behaviour of the atomic motion is strongly affected due to this. I also consider the situation in which the detuning is oscillating in time and its impact on the atomic motion. Wave packet simulations of the full problem are treated numerically and the results are compared with analytical solutions given by the standard Landau-Zener and the three-level Landau-Zener models.
description: 12 pages, 10 figures
The stability of conditional Markov processes and Markov chains in random environments
Creators: name: van Handel, Ramon
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 93E11 (Primary) 60J05, 62M20, 93E15 (Secondary)

description: We consider a discrete time hidden Markov model where the signal is a stationary Markov chain. When conditioned on the observations, the signal is a Markov chain in a random environment under the conditional measure. It is shown that this conditional signal is weakly ergodic when the signal is ergodic and the observations are nondegenerate. This permits a delicate exchange of the intersection and supremum of $σ$-fields, which is key for the stability of the nonlinear filter and partially resolves a long-standing gap in the proof of a result of Kunita [J. Multivariate Anal. 1 (1971) 365--393]. A similar result is obtained also in the continuous time setting. The proofs are based on an ergodic theorem for Markov chains in random environments in a general state space.
description: Published in at http://dx.doi.org/10.1214/08-AOP448 the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Microstate Distinguishability, Quantum Complexity, and the Eigenstate Thermalization Hypothesis
Creators: name: Bao, Ning
name: Pollack, Jason
name: Wakeham, David
name: Wildenhain, Elizabeth
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work, we use quantum complexity theory to quantify the difficulty of distinguishing eigenstates obeying the Eigenstate Thermalization Hypothesis (ETH). After identifying simple operators with an algebra of low-energy observables and tracing out the complementary high-energy Hilbert space, the ETH leads to an exponential suppression of trace distance between the coarse-grained eigenstates. Conversely, we show that an exponential hardness of distinguishing between states implies ETH-like matrix elements. The BBBV lower bound on the query complexity of Grover search then translates directly into a complexity-theoretic statement lower bounding the hardness of distinguishing these reduced states.
description: 19 pages, 4 figures; minor changes
OB'EKTGA YO'NALTIRILGAN DASTURLASH ZAMONAVIY DASTURLASHNING ASOSI SIFATIDA
Creators: name: Farmonov, Sherzodbek
name: Rasuljonova, Zarnigor
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqolada ob'ektga yo'naltirilgan dasturlash(OYD)ning asosiy tamayillari haqida fikr yuritilib, ularning mohiyati ochib berilgan. Bundan tashqari maqolada OYDninig yutuq va kamchiliklari tahlil qilingan.
Transition to the Giant Vortex State in an Harmonic Plus Quartic Trap
Creators: name: Fu, H.
name: Zaremba, E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider a rapidly rotating Bose-condensed gas in an harmonic plus quartic trap. At sufficiently high rotation rates the condensate acquires an annular geometry with the superposition of a vortex lattice. With increasing rotation rate the lattice evolves into a single ring of vortices. Of interest is the transition from this state to the giant vortex state in which the circulation is carried by only a central vortex. By analyzing the Gross-Pitaevskii energy functional variationally, we have been able to map out the phase boundary between these two states as a function of the rotation rate and the various trapped gas parameters. The variational results are in good qualitative agreement with those obtained by means of a direct numerical solution of the Gross-Pitaevskii equation.
description: 19 pages, 10 figures
Rashba effect in quantum networks
Creators: name: Bercioux, Dario
name: Governale, Michele
name: Cataudella, Vittorio
name: Ramaglia, Vincenzo Marigliano
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a formalism to study quantum networks made up by single-channel quantum wires in the presence of Rashba spin-orbit coupling and magnetic field. In particular, linear transport through one-dimensional and two-dimensional finite-size networks is studied by means of the scattering formalism. In some particular quantum networks, the action of the magnetic field or of the Rashba spin-orbit coupling induces localization of the electron wave function. This phenomenon, which relies on both the quantum-mechanical interference and the geometry of the network, is manifested through the suppression of the conductance for specific values of the spin-orbit-coupling strength or of the magnetic field. Furthermore, the interplay of the Aharonov-Bohm phases and of the non-Abelian phases introduced by spin-orbit coupling, is discussed in a number of cases.
description: 8 pages and 6 figures
... Veninde!
Creators: name: Collett, Jonas
Publisher: name: Unknown
Year: 1814

description: Et Brev dateret Eidsvold den 19. mai 1814. Udg. af Thorv. Boeck Kra. 1870. Tr.i:Boeck, Thorvald: Statsraad Jonas Collett. Biographi. Chr.1870.
The value of water in the South African economy: Some implications
Creators: name: Nieuwoudt, W. Lieb
name: Backeberg, G.R.
name: Du Plessis, H.M.
name: Nieuwoudt, W. Lieb
name: Backeberg, G.R.
name: Du Plessis, H.M.
Publisher: name: Unknown
Year: 2004
Subjects: Resource /Energy Economics and Policy

description: The South African Water Research Commission (WRC) initiated a number of research projects aimed at determining the value of water in different sectors of the economy and in different parts of the country. This research is reviewed. Water values were found to differ significantly between sectors, between geographic areas and within geographic areas. As agriculture is a large consumer of water several studies along different rivers were undertaken, including studies on water quality. Average ratios indicate that agriculture is an inefficient user of water in terms of gross income generated per unit of water and also in terms of jobs created per unit of water. Irrigation farming is, however, an important employer of labour while it contributes 30% to the value of farm output. A marginal approach and water demand elasticities also indicate that non-agriculture generally places a high value on water assurance but little value on more than what it already uses. This may indicate that although water is expected to transfer out of agriculture in the longer run, in the short run agriculture may be its best use. Water efficiency could be significantly enhanced if transfers within and between river reaches are promoted, as water shadow prices differ. Inputs from the Department of Water Affairs and Forestry (DWAF) are important in water allocation due to socio-economic and environmental externalities of water allocation.
Reconstruction of an Inductive Velocity Field Vector from Doppler Motions and a Pair of Solar Vector Magnetograms
Creators: name: Georgoulis, Manolis K.
name: LaBonte, Barry J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We outline a general methodology to infer the inductive velocity field vector in solar active regions. For the first time, both the field-aligned and the cross-field velocity components are reconstructed. The cross-field velocity solution accounts for the changes of the vertical magnetic field seen between a pair of successive active-region vector magnetograms via the ideal induction equation. The field-aligned velocity is obtained using the Doppler velocity and the calculated cross-field velocity. Solving the ideal induction equation in vector magnetograms measured at a given altitude in the solar atmosphere is an under-determined problem. In response, our general formalism allows the use of any additional constraint for the inductive cross-field velocity to enforce a unique solution in the induction equation. As a result, our methodology can give rise to new velocity solutions besides the one presented here. To constrain the induction equation, we use a special case of the minimum structure approximation that was introduced in previous studies and is already employed here to resolve the $180^o$-ambiguity in the input vector magnetograms. We reconstruct the inductive velocity for three active regions, including NOAA AR 8210 for which previous results exist. Our solution believably reproduces the horizontal flow patterns in the studied active regions but breaks down in cases of localized rapid magnetic flux emergence or submergence. Alternative approximations and constraints are possible and can be accommodated into our general formalism.
description: 48 pages, 13 figures ApJ, in press (high-resolution PDF version of the manuscript available at http://sd-www.jhuapl.edu/FlareGenesis/Team/Manolis/papers/velocity_paper.pdf)
Mathematical Programming Models to Increase Land and Water Use Efficiency in Semi-arid NE-Brazil
Creators: name: Hagel, Heinrich
name: Hoffmann, Christa
name: Doluschitz, Reiner
Publisher: name: CentMA
Year: 2014
Subjects: Agriculture; linear programming; irrigation; water efficiency; decision support; rural development; Itaparica; Brazil

description: Construction of the Itaparica dam and reservoir induced changes in the agricultural production systems of the Itaparica micro-region, at the lower-middle São Francisco river basin. Extensive traditional systems were replaced by e.g. irrigated fruit production. However, over twenty years after the dam construction, many farmers are still facing income insecurity. A survey, consisting of expert interviews and structured on-farm interviews, has been conducted to analyze current production systems. A Linear Programming farm optimization model was applied to determine optimal land allocation considering changing production conditions. Income depended strongly on low wages for day laborers, free irrigation water, and stable prices of the main crop, coconut. Diversification of production and improved market access can help to improve farmers’ income situation. Moderate water pricing can raise the awareness of water scarcity and lead to implementation of water saving production methods.
description: International Journal on Food System Dynamics, Vol 5, No 4 (2014): Special issue: Challenge of IT, Innovation and Knowledge
The impact of market access on input use and agricultural productivity: Evidence from Machakos District, Kenya
Creators: name: Kamara, Abdul B.
name: Kamara, Abdul B.
Publisher: name: Unknown
Year: 2004
Subjects: Productivity Analysis

description: With increasing land scarcity, efforts to increase agricultural production in the past decades have been concentrated on agricultural intensification. Recent studies have shown that improvement in market access increases agricultural productivity, firstly by facilitating specialisation and exchange transactions in rural areas, and secondly through intensification of input use. The extent to which specialisation and intensification contribute to agricultural productivity, and how this increase is distributed across farmers of different farm sizes and resources, will be presented in this paper. The output generated from a variance analysis is used to develop and estimate a three stage least square regression model. The model is used to assess the effects of market access on agricultural productivity, and the distribution of market-generated benefits among small and large farmers. Data collected from 100 farmers in Machakos District are used for the analysis. The results indicate that aggregate physical productivity increases with improvement in market access, but that there is a disparity in the distribution of market-generated efficiency gains between small and large farmers (large farmers benefit more than small farmers), and between farmers with different access options to markets easy access farmers benefit more than farmers with difficult access.
The Sustainable Beef Profit Partnership Approach to the Adoption of New Beef Industry Technologies
Creators: name: Griffith, Garry R.
name: Clark, R.E.
name: Parnell, Peter F.
name: Timms, Janice
name: Griffith, Garry R.
name: Clark, R.E.
name: Parnell, Peter F.
name: Timms, Janice
Publisher: name: Unknown
Year: 2007
Subjects: subject: Livestock Production/Industries
subject: Accelerated adoption
subject: continuous improvement and innovation
subject: beef industry
subject: profit

description: Technology adoption in the Australian beef industry has been low and slow compared to the intensive livestock and cropping industries. The principles of accelerated adoption provide an innovative solution to this problem. In the Beef CRC, Sustainable Beef Profit Partnership (BPP) members will meet regularly to measure their current performance, set targets for future productivity increases, and use a profitability framework to assess the potential impact of new technology. Capacity building and partnership outcomes will also be assessed. The BPP teams will be supported with appropriate tools and resources. The information generated will be used to underpin the achievement of Beef CRC commercialisation outputs and profitability outcomes.
Harnessing indigenous knowledge for sustainable forest management in Ghana
Creators: name: Sraku-Lartey, Margaret
Publisher: name: CentMA
Year: 2014
Subjects: Indigenous Knowledge; sustainable forest management; forestry; information management; knowledge systems; Ghana

description: This paper makes a case for harnessing indigenous knowledge (IK) for sustainable national development in Ghana. IK according to the World Bank is the basic component of any country’s knowledge system and it is upon this knowledge that scientific research builds. In Ghana the Government has recognized the need to harness IK for sustainable national development and has therefore incorporated it into the National Science, Technology and Innovation Development Programme. But there is no evidence however that scientific research in Ghana actually takes IK into consideration during the research process. This paper discusses the concept of indigenous knowledge, its relevance in scientific discourse and the need for harnessing it for national development in Ghana. A desk study was conducted using journal publications, research and technical reports, online databases and the internet. About sixty articles were analysed using the thematic synthesis method under the following broad headings: Importance of Indigenous knowledge, Indigenous forest foods, Indigenous medicines, IK and food security, the management and processing of IK and the protection of Indigenous Knowledge.
The results of the study established the need to document the local knowledge using appropriate procedures and strategies. It also concludes by suggesting that IK in Ghana must be protected by law and integrated into formal science.
description: International Journal on Food System Dynamics, Vol 5, No 4 (2014): Special issue: Challenge of IT, Innovation and Knowledge
TÚRKIYA MÁMLEKETINIŃ RAWAJLANIWI
Creators: name: Berdibaeva, Gúlziya
Publisher: name: Zenodo
Year: 2024

description: Maqalada dúnya júzi mámleketleriniń ishindegi, rawajlanǵan mámleketlerdiń biri Túrkiya, onıń geografiyalıq jaylasıw ornı, xalqı, milliyligi, sanaatı,transportı hám basqa da tarawlarınıń rawajlanıwı haqqında sóz etilgen.
BOOK REVIEW: “ENVIRONMENTAL EXPRESSIVE THERAPIES: NATURE-BASED THEORRY AND PRACTICE“. Edited by A.I. Kopytin and M. Rugh. New York: Routledge/Taylor & Francis, 2017. — 266 p.
Creators: name: Fedotova Anna
Publisher: name: Ecopoiesis: eco-human theory and practice
Year: 2020
Subjects: art therapy
Earth-based
ecopsychology
ecotherapy
environmental expressive therapy

description: The review outlines the book “Environmental Expressive Psychotherapies: Nature-Friendly Theory and Practice” as reflecting the development of new health-promoting approaches and types of psychological support based on the alliance of nature and the arts. The book reflects the conceptual foundations of the new approach, as well as the variety of forms and methods of work using fine art, music, narrative activity, play activities, performance and therapeutic ceremonies.
Targeted modeling of GW150914's binary black hole source with dart_board
Creators: name: Andrews, Jeff J.
name: Cronin, Julianne
name: Kalogera, Vicky
name: Berry, Christopher
name: Zezas, Andreas
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a new method to extract statistical constraints on the progenitor properties and formation channels of individual gravitational-wave sources. Although many different models have been proposed to explain the binary black holes detected by the LIGO Scientific and Virgo Collaboration (LVC), formation through isolated binary evolution remains the best explored channel. Under the assumption of formation through binary evolution, we use the statistical wrapper dart_board coupled with the rapid binary evolution code COSMIC to model the progenitor of GW150914, the first gravitational-wave signal detected by the LVC. Our Bayesian method combines the likelihood generated from the gravitational-wave signal with a prior describing the population of stellar binaries, and the Universe's star-formation and metallicity evolution. We find that the dominant evolutionary channel for GW150914 did not involve a common-envelope phase, but instead the system most probably (70%-90%) formed through stable mass transfer. This result is robust against variations of various model parameters, and it is reversed only when dynamical instability in binaries becomes more likely when a strict condition favoring common envelopes is adopted. Our analysis additionally provides a quantitative description of the progenitors relevant to each channel.
description: 14 pages, 5 figures, 1 table, accepted for publication in ApJL