cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Economics of Wastewater Treatment and Recycling: An Investigation of Conceptual Issues
Creators: name: Devi, Mekala Gayathri
name: Davidson, Brian
name: Boland, Anne-Maree
name: Devi, Mekala Gayathri
name: Davidson, Brian
name: Boland, Anne-Maree
Publisher: name: Unknown
Year: 2007
Subjects: subject: Resource /Energy Economics and Policy
subject: Wastewater
subject: recycling
subject: water quality
subject: pricing
subject: allocation
subject: urban design

description: In the context of continuous droughts, the search for alternative water sources and increasing environmental restrictions on discharge of treated wastewater into natural water bodies, treated wastewater recycling offers a potential solution. In this paper the methods needed to assess the questions - to what extent treated wastewater can complement the existing water sources in different sectors and at what cost - are discussed? It was concluded that a comparative Benefit Cost Analysis of different combinations of uses and treatment levels would be a critical component in the development of a decision support tool which could be used by urban planners and water authorities. It was also found that community acceptance of recycled water, distribution of costs and benefits of recycling and its broader impact on regional development are issues that need to be considered, along with the economics of wastewater recycling.
LOST CENTRAL VENOUS CATHETER (CVC) GUIDEWIRE: A CASE REPORT
Creators: name: Dr. Ankit
name: Dr. Ram Murti Sharma
name: Dr. Manish Bharti
Publisher: name: Zenodo
Year: 2024

description: Abstract

Central venous cannulation is a common tool and routine procedure performed in intensive care unit using Seldinger’s technique. This is safe technique, however, have multiple potential risk. Guide wire related complications are rare but potentially serious. We describe a case of lost guide wire during central venous cannulation followed by retrieval by interventional radiologist and outline measure that can be taken to prevent such complication.
Towards Design For a Nutrient Trading Programme to Improve Water Quality in Lake Rotorua
Creators: name: Kerr, Suzi
name: Lauder, Glen
name: Fairman, David
name: Kerr, Suzi
name: Lauder, Glen
name: Fairman, David
Publisher: name: Unknown
Year: 2007
Subjects: subject: Resource /Energy Economics and Policy
subject: water quality
subject: emissions trading
subject: non-point source pollution
subject: nutrients
subject: Rotorua
subject: communication
subject: learning

description: This paper explores how to enhance the role for academic research (natural sciences, economics and their integration; and stakeholder management) within the development and implementation of water quality policy in New Zealand. Our focus is on the use of market based instruments and particularly nutrient trading programmes, which are one important part of the potential tool kit to address these issues. We discuss why nutrient trading might be an appropriate instrument for the Lake Rotorua catchment. We survey the existing literature and then outline the outstanding scientific, economic and governance questions that need to be addressed to design an effective trading programme. Finally we discuss how to design a process to address these questions drawing on both technical and practical knowledge through a learning process.
Nonlinear interaction of inertial and semidiurnal currents in the northeast pacific
Creators: name: Mihaly, Steven Ferenc
Publisher: name: University of British Columbia
Year: 2009

description: Rotary spectra of horizontal current velocities from moorings in the northeast Pacific are found to have a significant spectral peak at precisely the sum of the semidiurnal and local inertial frequencies. The existence of this spectral peak is, in the absence of any known forcing at the sum frequency, sufficient to assume some form of nonlinear interaction between internal wave motions at the inertial and semidiurnal frequencies. The mooring locations studied in this thesis represent three distinct deep (> 2000 m) oceanic regimes: a topographically rough, a topographically smooth, and a near-coastal region. The amplitude of the spectral peak at the sum frequency (termed the 'ʃM2" frequency) is consistent among regions, implying that the nonlinear interaction is not directly linked to specific characteristics of the regions and may be ubiquitous to the world ocean. Although the measurements are limited, there is no significant variation in intensity of the spectral peak with depth. Weak resonant wave-wave interaction theory is the most readily applicable model for the nonlinear interaction. Although the validity of the weakness assumption used in deriving the coupling efficiency is in question, the physical mechanism of the coupling of two internal gravity waves via a resonant triad is well founded. The resonance condition prescribes geometric constraints on the propagation and wavelengths of a triad of interacting internal waves. The propagation and wavelengths of inertial and semidiurnal waves observed in the northeast Pacific are consistent with these constraints and the formation of resonant triads is likely. Analysis, based on the likelihood of the global formation of resonant triads between inertial and semidiurnal waves, indicates that higher latitudes are favored. An examination of two deep-ocean sites along Juan de Fuca Ridge shows that elevated energy is not usually coincident in the inertial, semidiurnal and ʃM2 frequency bands. When the energy in all three bands is coincident, motions in the ʃM2 band can be: 1) nonresonantly forced requiring the support of the inertial and semidiurnal motions or, 2) a result of the nonlinear transfer of energy from the inertial and semidiurnal motions. When the energy is not coincident, the energy in the ʃM2 frequency band can only result from nonlinear exchange of energy from the inertial and semidiurnal motions, for which a plausible mechanism is triad resonance. Bispectral analysis indicates that there is nonlinear coupling between the inertial, semidiurnal and ʃM2 frequency bands at the Endeavour segment site but not at the CoAxial segment site. This implies that the Endeavour segment site may be a generation region for ʃMz waves while the CoAxial site is in the path of propagating ʃM2 wave energy from a remote source region.
Minimizing the number of edges in $K_{s,t}$-saturated bipartite graphs
Creators: name: Chakraborti, Debsoumya
name: Chen, Da Qi
name: Hasabnis, Mihir
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: This paper considers an edge minimization problem in saturated bipartite graphs. An $n$ by $n$ bipartite graph $G$ is $H$-saturated if $G$ does not contain a subgraph isomorphic to $H$ but adding any missing edge to $G$ creates a copy of $H$. More than half a century ago, Wessel and Bollobás independently solved the problem of minimizing the number of edges in $K_{(s,t)}$-saturated graphs, where $K_{(s,t)}$ is the `ordered' complete bipartite graph with $s$ vertices from the first color class and $t$ from the second. However, the very natural `unordered' analogue of this problem was considered only half a decade ago by Moshkovitz and Shapira. When $s=t$, it can be easily checked that the unordered variant is exactly the same as the ordered case. Later, Gan, Korándi, and Sudakov gave an asymptotically tight bound on the minimum number of edges in $K_{s,t}$-saturated $n$ by $n$ bipartite graphs, which is only smaller than the conjecture of Moshkovitz and Shapira by an additive constant. In this paper, we confirm their conjecture for $s=t-1$ with the classification of the extremal graphs. We also improve the estimates of Gan, Korándi, and Sudakov for general $s$ and $t$, and for all sufficiently large $n$.
description: Reflected minor suggestions from reviewers
MULTILATERAL NEGOTIATIONS, REGIONAL INTEGRATION PROCESSES AND THE CAP. WHAT'S AHEAD?
Creators: name: Anania, Giovanni
name: Anania, Giovanni
Publisher: name: Unknown
Year: 2007
Subjects: International Relations/Trade

description: The focus of the paper is on the developments so far and the future of the negotiations on agriculture in the WTO Doha Development Agenda round from the perspective of the European Union. The first part of the paper discusses what happened in the two parallel processes, the domestic agricultural policy reform in the EU and the WTO negotiations, identifying the linkages between CAP reform decisions and developments in the EU negotiation positions. The second part of the paper discusses further changes expected in the relatively near future in the CAP and in regional trade agreements involving the EU, and the perspectives of the WTO negotiations. The main point made is that the changes in domestic agricultural policy which have occurred in the EU (mostly motivated by domestic concerns), while they have not removed farm support nor made the CAP effective and efficient, have had a significant effect in terms of reducing its distortionary effects on markets, though more on the domestic than on the international ones. Unlike in the Uruguay round negotiations (when the MacSharry reform was decided close to the end of the round), the timing and extent of these reforms have made it possible for the EU to be a credible actor in the DDA round and put forward sensible negotiating proposals. The CAP is expected to go through further significant changes in the near future which, regardless of what happens in the WTO negotiations, will bring a further market reorientation of EU agriculture and a reduction in trade distortions. Successful developments in preferential trade agreements involving the EU for which negotiations are already well under way may contribute to a significant increase in the opening of EU agro-food markets.
Recursive Generation of The Semi-Classical Expansion in Arbitrary Dimension
Creators: name: Pazarbaşı, Cihan
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a recursive procedure, which is based on the small time expansion of the propagator, in order to generate a semi-classical expansion of the \textit{quantum action} for a quantum mechanical potential in arbitrary dimensions. In the method we use the spectral information emerges from the singularities of the propagator on the complex $t$ plane, which are handled by the $i\ve$ prescription and basic complex analysis. This feature allows for generalization to higher dimensions. We illustrate the procedure by providing simple examples in non-relativistic quantum mechanics.
description: 19 pages. v2. Published version. Typos corrected, one reference added
The Long and Winding Road: Norway's Approach to ITQs
Creators: name: Hannesson, Rognvaldur
name: Hannesson, Rognvaldur
Publisher: name: Unknown
Year: 2007
Subjects: Resource /Energy Economics and Policy

description: Individual transferable quotas (ITQs) are primarily tools to achieve economic efficiency and do not amount to ownership of fish stocks. The 200 mile exclusive economic zone (EEZ) went a long way to establish national jurisdiction over fish stocks, and without this ITQs would not have been possible. Shortly after the EEZs were established, Norway and the neighboring countries agreed on the sharing of fish stocks in the EEZ. The road to ITQs in Norway has, however, been long and winding. The paper discusses the obstacles to ITQs in general and how they have played out in Norway in particular. Despite not being conservation tools, individual vessel quotas have been considered helpful in enforcing overall catch limits. The driving forces behind transferability are partly the capital gains quota holders can make, and partly the fleet rationalization that transferability generates. Main obstacles are controversies over initial allocation and ideological opposition against privatization and reliance on market forces.
Formation of Bound States of scalar fields in AdS-asymptotic Wormholes
Creators: name: Chatzifotis, Nikos
name: Koutsoumbas, George
name: Papantonopoulos, Eleftherios
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use the Wentzel-Kramers-Brillouin (WKB) approximation to study the formation and propagation of bound states in the vicinity of a wormhole in the non-minimal derivative coupling theory of gravity. The wormhole throat connects two Anti-de Sitter spacetimes. We show that when the scalar field lies in high orbital states, the corresponding potential has potential barriers that block the passage of a classical field. We investigate the behaviour of the bound states trapped in the potential wells and provide the flow between the two AdS regions.
description: 22 pages, 10 figures, References updated, Minor changes
Radiating black hole solutions in arbitrary dimensions
Creators: name: Ghosh, S. G.
name: Dawood, A. K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We prove a theorem that characterizes a large family of non-static solutions to Einstein equations in $N$-dimensional space-time, representing, in general, spherically symmetric Type II fluid. It is shown that the best known Vaidya-based (radiating) black hole solutions to Einstein equations, in both four dimensions (4D) and higher dimensions (HD), are particular cases from this family. The spherically symmetric static black hole solutions for Type I fluid can also be retrieved. A brief discussion on the energy conditions, singularities and horizons is provided.
description: RevTeX 9 pages, no figures
The limitations of market driven sustainability: The case of environmental management systems for food production in Australia.
Creators: name: Cary, John W.
name: Bhaskaran, Suku
name: Polonsky, Michael
name: Cary, John W.
name: Bhaskaran, Suku
name: Polonsky, Michael
Publisher: name: Unknown
Year: 2007
Subjects: subject: Environmental Economics and Policy
subject: EMS
subject: environmental marketing
subject: sustainable food production
subject: eco-labelling

description: Environmental Management Systems (EMSs) address environmental risks in supply chains and certification of environmental claims. Governments supporting EMSs have encouraged producers to respond to anticipated consumer environmental concerns. Attempts at implementing EMSs have rarely been in direct response to market demand but are usually farmer organisation driven - to forestall increased regulation. In Australia, consumer demand for foods produced to environmentally sustainable standards is minimal because consumers don't believe these products offer special benefits. EMS implementation is expensive and onerous; and the products require a market premium. Food consumers have difficulty differentiating the terms organic, environmentally-friendly, and sustainably-produced in food labelling.
Chiral oscillations in the non-relativistic regime
Creators: name: Bittencourt, Victor A. S. V.
name: Bernardini, Alex E.
name: Blasone, Massimo
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Massive Dirac particles are a superposition of left and right chiral components. Since chirality is not a conserved quantity, the free Dirac Hamiltonian evolution induces chiral quantum oscillations, a phenomenon related to the \textit{Zitterbewegung}, the trembling motion of free propagating particles. While not observable for particles in relativistic dynamical regimes, chiral oscillations become relevant when the particle's rest energy is comparable to its momentum. In this paper, we quantify the effect of chiral oscillations on the non-relativistic evolution of a particle state described as a Dirac bispinor and specialize our results to describe the interplay between chiral and flavor oscillations of non-relativistic neutrinos: we compute the time-averaged survival probability and observe an energy-dependent depletion of the quantity when compared to the standard oscillation formula. In the non-relativistic regime, this depletion due to chiral oscillations can be as large as 40$\%$. Finally, we discuss the relevance of chiral oscillations in upcoming experiments which will probe the cosmic neutrino background.
description: 14 pages, 3 figures
Globalization, Trade and the Changing Geography of New Zealand: Urban versus Rural or Centre versus Periphery? (PowerPoint Presentation)
Creators: name: McCann, Philip
name: McCann, Philip
Publisher: name: Unknown
Year: 2007
Subjects: Community/Rural/Urban Development

description: This paper will examine the interrelationships between the position, role and performance of New Zealand in the global economy. In particular, the paper deals with the challenges faced by New Zealand which are associated with its economic geography, and examines how these challenges are mediated both in terms of external international economic issues and also internal interregional economic issues. It will be argued that both the internal and external responses of New Zealand to these issues are interconnected with basically the same processes, and the identification of such interconnections will help us to understand how New Zealand will evolve over the coming decades.
Hydrodynamic simulations of He-shell flash convection
Creators: name: Herwig, Falk
name: Freytag, Bernd
name: Hueckstaedt, Robert M.
name: Timmes, Francis X.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first hydrodynamic, multi-dimensional simulations of He-shell flash convection. Specifically, we investigate the properties of shell convection at a time immediately before the He- luminosity peak during the 15th thermal pulse of a stellar evolution track with initially two solar masses and metallicity Z=0.01. This choice is a representative example of a low-mass asymptotic giant branch thermal pulse. We construct the initial vertical stratification with a set of polytropes to resemble the stellar evolution structure. Convection is driven by a constant volume heating in a thin layer at the bottom of the unstable layer. We calculate a grid of 2D simulations with different resolutions and heating rates. Our set of simulations includes one low-resolution 3D run. The computational domain includes 11.4 pressure scale heights. He-shell flash convection is dominated by large convective cells that are centered in the lower half of the convection zone. Convective rolls have an almost circular appearance because focusing mechanisms exist in the form of the density stratification for downdrafts and the heating of localized eddies that generate upflows. Nevertheless, downdrafts appear to be somewhat more focused. The He-shell flash convection generates a rich spectrum of gravity waves in both stable layers above and beneath the convective shell. The magnitude of the convective velocities from our 1D mixing-length theory model and the rms-averaged vertical velocities from the hydrodynamic model are consistent within a factor of a few. However, the velocity profile in the hydrodynamic simulation is more asymmetric, and decays exponentially inside the convection zone. [abbreviated]
description: To appear in ApJ. Submitted Oct 21, 2005. Accepted Dec 29, 2005 . 31 pages, 24 figures. 15 figures in gif format that will not compile in latex. Complete pdf version available for download at http://www.astro.uu.se/~bf/publications/herwig06_ApJ_He-shell_flash_hydro.pdf
Agricultural Trade Reform Under the Doha Agenda: Ready for Takeoff?
Creators: name: Martin, William J.
name: Anderson, Kym
name: Martin, William J.
name: Anderson, Kym
Publisher: name: Unknown
Year: 2007
Subjects: International Relations/Trade

description: A successful agreement on agriculture is critical for an overall agreement under the Doha negotiations. But before the final agreement is known, some critical decisions must be made about issues such as resumption of the negotiations, and the key tradeoffs to be made following resumption. We consider four of the most controversial areas of the agricultural negotiations: the relative importance of domestic support, market access and export subsidies; the sensitive-product exceptions sought for all countries; the additional special product exceptions sought for developing countries; and the proposed special safeguard mechanism. We show that the decisions made on reform in these areas will have a critical influence on whether the negotiations achieve their objectives of promoting trade reform and reducing poverty. In the end, we are cautiously optimistic about the potential for the negotiations to deliver a substantial outcome.
The Future Role of Biofuels in the Asia-Pacific Region.
Creators: name: Coyle, William T.
name: Armbruster, Walter J.
name: Coyle, William T.
name: Armbruster, Walter J.
Publisher: name: Unknown
Year: 2007
Subjects: Resource /Energy Economics and Policy

description: There is growing interest in agriculture as a source of bio-fuels to replace petroleum-based transportation fuels. Ethanol production has more than doubled from 2000 to 2005 but still accounts for less than two percent of the world's transportation petrol supply. The future role of bio-fuels will be determined by continuation of high oil prices, availability of low cost feed stocks and favorable government policy. Possible government strategies include a strong policy commitment to reduce investment risk in the biofuel sector, public support for commercializing second generation biofuel, and accounting for country-specific agricultural and economic realities.
Properties of Central Caustics in Planetary Microlensing
Creators: name: Chung, Sun-Ju
name: Han, Cheongho
name: Park, Byeong-Gon
name: Kim, Doeon
name: Kang, Sangjun
name: Ryu, Yoon-Hyun
name: Kim, Kang Min
name: Jeon, Young-Beom
name: Lee, Dong-Wook
name: Chang, Kyongae
name: Lee, Woo-Baik
name: Kang, Yong Hee
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: To maximize the number of planet detections, current microlensing follow-up observations are focusing on high-magnification events which have a higher chance of being perturbed by central caustics. In this paper, we investigate the properties of central caustics and the perturbations induced by them. We derive analytic expressions of the location, size, and shape of the central caustic as a function of the star-planet separation, $s$, and the planet/star mass ratio, $q$, under the planetary perturbative approximation and compare the results with those based on numerical computations. While it has been known that the size of the planetary caustic is \propto \sqrt{q}, we find from this work that the dependence of the size of the central caustic on $q$ is linear, i.e., \propto q, implying that the central caustic shrinks much more rapidly with the decrease of $q$ compared to the planetary caustic. The central-caustic size depends also on the star-planet separation. If the size of the caustic is defined as the separation between the two cusps on the star-planet axis (horizontal width), we find that the dependence of the central-caustic size on the separation is \propto (s+1/s). While the size of the central caustic depends both on $s$ and q, its shape defined as the vertical/horizontal width ratio, R_c, is solely dependent on the planetary separation and we derive an analytic relation between R_c and s. Due to the smaller size of the central caustic combined with much more rapid decrease of its size with the decrease of q, the effect of finite source size on the perturbation induced by the central caustic is much more severe than the effect on the perturbation induced by the planetary caustic. Abridged.
description: 5 pages, 4 figures, ApJ accepted
Ali Ibn Abu Tolib
Creators: name: Norpo'latov Asilbek, Toshkent axborot texnologiyalari  universiteti Samarqand filiali AX23-08 guruh talabasi
name: Ilmiy rahbar: X.U.Samatov
Publisher: name: Zenodo
Year: 2024

description: Ushbu  maqolada  islom  xalifalaridan  biri  Ali  Ibn  Abu  Tolibning islom  dini  tarqalishi  va  payg’ambar  sunnatlari  saqlab  qolishdagi  xizmatlari to’g’risidagi ma’lumotlar bayon etilgan.
Spin Foam Models from the Tetrad Integration
Creators: name: Mikovic, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We describe a class of spin foam models of four-dimensional quantum gravity which is based on the integration of the tetrad one-forms in the path integral for the Palatini action of General Relativity. In the Euclidian gravity case this class of models can be understood as a modification of the Barrett-Crane spin foam model. Fermionic matter can be coupled by using the path integral with sources for the tetrads and the spin connection, and the corresponding state sum is based on a spin foam where both the edges and the faces are colored independently with the irreducible representations of the spacetime rotations group.
description: 6 pages, based on the talk presented at the ERE05 meeting, September 6-10, 2005, Oviedo
Estimating the Characteristics of Polluting Technologies
Creators: name: O'Donnell, Christopher J.
name: O'Donnell, Christopher J.
Publisher: name: Unknown
Year: 2007
Subjects: Environmental Economics and Policy

description: Polluting technologies can be represented using output distance functions. A common approach to estimating such functions is to factor out one of the outputs and estimate the resulting equation using well-known stochastic frontier estimation methods, including maximum likelihood. A problem with this approach is that the outputs that are not factored out may be correlated with the error term, leading to biased and inconsistent estimates. This paper addresses the problem in a Bayesian framework. The methodology is applied to data on U.S. electric utilities. Results include estimates of technical inefficiencies and the shadow price of a pollutant.
Randomized Broadcast Channel Access Algorithms for Ad Hoc Networks
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 100503 Computer Communications Networks
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The problem of broadcast channel access in single-hop and multihop ad hoc networks is considered. Two novel randomized and distributed channel access algorithms are developed and analyzed for single-hop and multihop networks, respectively. These algorithms are designed based on maximizing the worst-case channel efficiency, by optimizing some key parameters, including the backoff probability distribution and the slot length. The proposed algorithm for single-hop networks offers significantly higher throughput than the CSMA methods when the traffic load is heavy, while still achieving good performance when the load is light or medium. The proposed algorithm for multihop networks can flexibly adapt to the traffic load, and offers much better throughput performance than the existing broadcast scheduling algorithms in light or medium load.
Alternative experimental ways to access entropy production
Creators: name: Tan, Zheng
name: Camati, Patrice A.
name: Cauquil, Guillaume Coeuret
name: Auffèves, Alexia
name: Dotsenko, Igor
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We theoretically derive and experimentally compare several different ways to access entropy production in a quantum process under feedback control. We focus on a bipartite quantum system realizing an autonomous Maxwell's demon scheme reported by Najera-Santos et al. [Phys.~Rev.~Research 2, 032025(R) (2020)], where information encoded in a demon is consumed to transfer heat from a cold qubit to a hot cavity. By measuring individual quantum trajectories of the joint demon-cavity-qubit system, we compute the entropy production with six distinct expressions derived from different approaches to the system description and its evolution. Each method uses a specific set of trajectories and data processing. Our results provide a unified view on the various meanings of irreversibility in quantum systems and pave the way to the measurement of entropy production beyond thermal frameworks.
description: 15 pages, 10 figures
«STAR PATHS TO MYTHOLOGY» -Mια επιχειρηματική ιδέα για τουρισμό ειδικού ενδιαφέροντος.
Creators: name: Σαμακά, Χρυσούλα Σταύρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Αστροτουρισμός
Αστερισμοί
Μυθολογία
Astrotourism
Constellations
Mythology

description: Τις τελευταίες δεκαετίες, έχει αυξηθεί το παγκόσμιο ενδιαφέρον για πρακτική του φυσιολατρικού τουρισμού, που χαρακτηρίζεται από το γεγονός ότι συνδέεται άμεσα με την ανάπτυξη του αειφόρου τουρισμού. Μια νέα μορφή, που συνδέεται με την αειφορία και αποτελεί το επίκεντρο αυτής της μεταπτυχιακής διατριβής, είναι ο αστροτουρισμός, ο οποίος συνδέεται άμεσα, μεταξύ άλλων, με τον σεβασμό προς τη φύση. Η εμφάνιση αναδυόμενων τουριστικών προϊόντων που σχετίζονται με τον αστροτουρισμό, δίνει το έναυσμα να δοθεί μια πιθανή εναλλακτική λύση στην απόεποχικοποίηση του τουριστικού τομέα, συνδέοντας συνάμα τη βιώσιμη τουριστική ανάπτυξη με την επιστήμη. Αρχικά, διερευνήθηκε ο αστροτουρισμός, ως μορφή τουρισμού ειδικού ενδιαφέροντος, κατά πόσο υφίσταται σαν είδος στην Ελλάδα, εάν υπάρχει ζήτηση και άρα κοινό, αν θα μπορούσε να αναπτυχθεί και ενδεχομένως με ποιους τρόπους και στη συνέχεια, προτείνεται μια νέα επιχειρηματική ιδέα για την ανάπτυξη του στον Ελλαδικό χώρο. Για την πραγματοποίηση της έρευνας επιλέχθηκαν, ως μεθοδολογικά εργαλεία, η δευτερογενής έρευνα, μέσα από τη βιβλιογραφία και το διαδίκτυο και στα πλαίσια της πρωτογενούς έρευνας, συνεντεύξεις, αδόμητου τύπου, από τις οποίες αντλήθηκαν αποτελέσματα σχετικά με τα ερευνητικά ερωτήματα και επιπλέον, εστίασαν στη συλλογή δεδομένων και πληροφοριών που στηρίζουν την επιχειρηματική ιδέα που προτείνεται. Κατόπιν, πραγματοποιείται μια πλήρης περιγραφή του προϊόντος και παρουσιάζεται, μοντέλο BUSINESS CANVAS και ανάλυση SWOT, για την πρόταση της επιχειρηματικής δραστηριότητας καθώς αναλύονται και τα επιμέρους πεδία τους.
description: In recent decades, there has been an increasing global interest in the practice of nature-based tourism, characterized by the fact that it is directly linked to the development of sustainable tourism. A new form, linked to sustainability and the focus of this master thesis, is astro-tourism, which is directly related, among other things, to respect for nature. The rise of emerging tourism products related to astro-tourism gives the stimulus to provide a possible alternative to the de-seazonalization of the tourism sector, while linking sustainable tourism development with science. Initially, astro-tourism was investigated as a form of special interest tourism, whether it exists as a type of tourism in Greece, whether there is a demand and therefore an audience, whether it could be developed and possibly in what ways, and then a new business idea for its development in Greece proposed. For the realization of the research, chosen as methodological tools were the secondary research - through the bibliography and the internet- and in the context of primary research, interviews, unstructured type, from which results were obtained regarding the research questions and, in addition, focused on the collection of data and information that supports the business idea proposed.
Recensione Libro - Claudio Cerreti, Matteo Marconi, Paolo Sellari - Spazi e poteri Geografia politica, geografia economica, geopolitica
Creators: name: Barbara, Caliandro
Publisher: name: Zenodo
Year: 2020

description: Recensione Libro - Claudio Cerreti, Matteo Marconi, Paolo Sellari - Spazi e poteri Geografia politica, geografia economica, geopolitica
Chiral restoration in excited nucleons versus SU(6)
Creators: name: Glozman, L. Ya.
name: Nefediev, A. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We compare axial charges of excited nucleons, as predicted by the chiral symmetry restoration picture, with the traditional, moderately successful for the ground-state baryons SU(6) symmetry. The axial charges of excited nucleons can (and will) be measured in lattice QCD simulations, and comparison of the lattice results with the two different symmetry schemes will give an insight on the origins of the excited hadron masses as well as on interrelations of chiral symmetry and confinement.
description: RevTeX, 14 pages, a few comments added and references updated, to appear in Nucl. Phys. A
Thesen zum Thema "Weltwirtschaftspolitik und 'neuer Lebensstil'"
Creators: name: Schweitzer, Wolfgang
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 27 Nr. 1 (1978): Ökumenische Rundschau, Band 27, Heft 1
Assessing the use of Geographical Indications for the New England wine region in NSW
Creators: name: Chang, Hui-Shung (Christie)
name: Campbell, Gene
name: Sniekers, Peter
name: Chang, Hui-Shung (Christie)
name: Campbell, Gene
name: Sniekers, Peter
Publisher: name: Unknown
Year: 2007
Subjects: subject: Agribusiness
subject: geographical indication
subject: TRIPS Agreement
subject: wine marketing
subject: hedonic

description: Geographical Indications (GIs) have increasingly been used as a marketing tool to create an image of quality and uniqueness, and so capture premium prices. Hedonic pricing studies have shown that indication of geographical origin of production (e.g. country, region, wineries, and location), can affect prices. However, Geographical Indications only work when they are backed up by quality products. The objectives of this study are to assess the potential of a proposed Geographical Indication for the emerging "New England" wine region in promoting local wines and to make recommendations on how that potential, if it exists, can be realised. The assessment is based on an overview of existing systems of Geographical Indications and conditions, both economic and regulatory, which are required for successful geographical indication applications.
The Collective Memory of the Holocaust in Polish Post-World War II Films
Creators: name: Radwan, Ramy Tarek Moustafa Mohammed
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Ολοκαύτωμα
Συλλογική μνήμη
Πολωνικός κινηματογράφος
Holocaust
Collective memory
Polish film

description: This thesis explores the collective memory of the Holocaust in Poland through an analysis of Polish films produced or set in the post-World War II period. The films examined are Ashes and Diamonds (1958), The Last Day of Summer (1958), Aftermath (2012), and Ida (2013). As the primary site of the Holocaust, Poland suffered the mass killing of its Jewish population, which has led to the transmission of suffering and grieving to later generations. As a result, the contested memory of the events of WWII has become a subject of exploration in post-WWII Polish cinema. This MA thesis examines how specific Polish filmmakers (Andrzej Wajda, Tadeusz Konwicki, Władysław Pasikowski, Paweł Pawlikowski) have memorialized the genocide through storytelling. Furthermore, it analyzes how the collective memory of the Holocaust in Poland has changed over time by comparing films produced in the immediate post-war period to those produced several decades after the end of WWII. Drawing on the theories of virtual memory by Henri Bergson, and Gilles Deleuze, among others, the study explores how the collective memory of the Holocaust has been represented in Polish films.
description: Αυτή η διατριβή εξετάζει τη συλλογική μνήμη του Ολοκαυτώματος στην Πολωνία μέσω μίας ανάλυσης των πολωνικών ταινιών που παράγονται ή διαδραματίζονται στη μεταπολεμική περίοδο μετά τον Δεύτερο Παγκόσμιο Πόλεμο. Οι ταινίες που εξετάζονται είναι το "Στάχτες και Διαμάντια" (1958), το "Η Τελευταία Μέρα του Καλοκαιριού" (1958), το "Επακόλουθο" (2012) και το "Ιντα" (2013). Ως κύριος τόπος του Ολοκαυτώματος, η Πολωνία υπέφερε από τη μαζική εξόντωση του εβραϊκού πληθυσμού της, που οδήγησε στη μετάδοση του πόνου και του πένθους στις μεταγενέστερες γενιές. Ως αποτέλεσμα, η διαμάχη γύρω από τη μνήμη των γεγονότων του Β' Παγκοσμίου Πολέμου έχει γίνει αντικείμενο έρευνας στον πολωνικό κινηματογράφο μετά τον Β' Παγκόσμιο Πόλεμο. Αυτή η διατριβή διερευνά πώς συγκεκριμένοι πολωνοί δημιουργοί ταινιών (Αντρέι Βάιντα, Ταντέους Κονβίκι, Βουάντισλαβ Πασίκοφσκι, Πάβελ Παβλικόφσκι) έχουν μνημονεύσει τη γενοκτονία μέσα από την αφήγησή τους. Επιπλέον, αναλύει πώς η συλλογική μνήμη του Ολοκαυτώματος στην Πολωνία έχει αλλάξει με την πάροδο του χρόνου, συγκρίνοντας ταινίες που παράχθηκαν αμέσως μετά τον πόλεμο με αυτές που παράχθηκαν δεκαετίες μετά το τέλος του Β' Παγκοσμίου Πολέμου. Χρησιμοποιώντας τις θεωρίες της εικονικής μνήμης του Ανρί Μπέργκσον και του Ζιλ Ντελέζ, μεταξύ άλλων, η μελέτη διερευνά πώς η συλλογική μνήμη του Ολοκαυτώματος έχει απεικονιστεί στις πολωνικές ταινίες.
Summarizing Reports on Evolving Events; Part I: Linear Evolution
Creators: name: Afantenos, Stergos D.
name: Karkaletsis, Vangelis
name: Stamatopoulos, Panagiotis
Publisher: name: arXiv
Year: 2005
Subjects: subject: Computation and Language (cs.CL)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: We present an approach for summarization from multiple documents which report on events that evolve through time, taking into account the different document sources. We distinguish the evolution of an event into linear and non-linear. According to our approach, each document is represented by a collection of messages which are then used in order to instantiate the cross-document relations that determine the summary content. The paper presents the summarization system that implements this approach through a case study on linear evolution.
description: 7 pages. Published on the Conference Recent Advances in Natural Language Processing (RANLP, 2005)
Hybrid-type synchronization transitions: where marginal coherence, scale-free avalanches, and bistability live together
Creators: name: Buendía, Victor
name: Villegas, Pablo
name: Burioni, Raffaella
name: Muñoz, Miguel A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The human cortex is never at rest but in a state of sparse and noisy neural activity that can be detected at broadly diverse resolution scales. It has been conjectured that such a state is best described as a critical dynamical process -- whose nature is still not fully understood -- where scale-free avalanches of activity emerge at the edge of a phase transition. In particular, some works suggest that this is most likely a synchronization transition, separating synchronous from asynchronous phases. Here, by investigating a simplified model of coupled excitable oscillators describing the cortex dynamics at a mesoscopic level, we investigate the possible nature of such a synchronization phase transition. Within our modeling approach, we conclude that -- in order to reproduce all key empirical observations, such as scale-free avalanches and bistability, on which fundamental functional advantages rely -- the transition to collective oscillatory behavior needs to be of an unconventional hybrid type, with mixed features of type-I and type-II excitability, opening the possibility for a particularly rich dynamical repertoire.
description: 7 pages, 4 figures, and Supplementary Information. Accepted to be published in PRR
Radiative decay of the Lambda(1520)
Creators: name: Doring, M.
name: Oset, E.
name: Sarkar, Sourav
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A recently developed non-perturbative chiral approach to dynamically generate the (3/2^-) baryon resonances has been extended to investigate the radiative decays Lambda^*(1520) --> gamma Lambda(1116) and Lambda^*(1520) --> gamma Sigma^0(1193). We show that the Lambda^*(1520) decay into gamma Lambda is an ideal test for the need of extra components of the resonance beyond those provided by the chiral approach since the largest meson-baryon components give no contribution to this decay. The case is different for gamma Sigma decay where the theory agrees with experiment, though the large uncertainties of these data call for more precise measurements.
description: 15 pages, 6 figures
Turbulent Gas Flows in the Rosette and G216-2.5 Molecular Clouds: Assessing Turbulent Fragmentation Descriptions of Star Formation
Creators: name: Heyer, M.
name: Williams, J.
name: Brunt, C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The role of turbulent fragmentation in regulating the efficiency of star formation in interstellar clouds is examined from new wide field imaging of 12CO and 13CO J=1-0 emission from the Rosette and G216-2.5 molecular clouds. The Rosette molecular cloud is a typical star forming giant molecular cloud and G215-2.5 is a massive molecular cloud with no OB stars and very little low mass star formation. The properties of the turbulent gas flow are derived from the set of eigenvectors and eigenimages generated by Principal Component Analysis of the spectroscopic data cubes. While the two clouds represent quite divergent states of star formation activity, the velocity structure functions for both clouds are similar. The sonic scale, lambda_S, defined as the spatial scale at which turbulent velocity fluctuations are equivalent to the local sound speed, and the turbulent Mach number evaluated at 1 pc, M_{1pc}, are derived for an ensemble of clouds including the Rosette and, G216-2.5 regions that span a large range in star formation activity. We find no evidence for the positive correlations between these quantities and the star formation efficiency, that are predicted by turbulent fragmentation models. A correlation does exist between the star formation efficiency and the sonic scale for a subset of clouds with L_{FIR}/M(H_2) > 1 that are generating young stellar clusters. Turbulent fragmentation must play a limited and non-exclusive role in determining the yield of stellar masses within interstellar clouds.
description: Accepted by ApJ, 22 pages, 7 figures
Performance Analysis of Distributed Slotted Media Access Control in Wireless Ad Hoc Networks
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 100503 Computer Communications Networks
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: A wireless ad hoc network is a collection of wireless mobile nodes without the required intervention of any centralized Access Point. How to design an efficient Media Access Control (MAC) method for such a networks is always a very challenging problem. Although most of the existing MACs can avoid the hidden terminal problem, they may suffer significant collisions of the control packets (especially when the service load is medium or high) and the exposed terminal problem. In this paper, the detrimental effect of the collisions among the control packets and the exposed terminal problem are analyzed in existing asynchronous MAC methods, the ADSC (Asynchronous Data, Synchronous Control) scheme and the SDSC (Synchronous Data, Synchronous Control) scheme, to reduce the control packet collisions and avoid the exposed terminal problem in ad hoc networks. Both theoretical analysis and simulations indicate that the proposed MACs outperform the existing methods, in the sense that they have much better throughput performance.
Reply to 'Comment on "Detuning effects in the one-photon mazer" '
Creators: name: Bastin, Thierry
name: Martin, John
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We refute in this Reply the criticisms made by M. Abdel-Aty [Phys. Rev. A 70, 047801 (2004)]. We show that none of them are founded and we demonstrate very explicitly what is wrong in the arguments developed by this author.
description: 5 pages, 2 figures
Opportunities for Local for Local Food Production: A Case in the Dutch Fruit and Vegetables
Creators: name: Visser, Jurriaan
name: Trienekens, Jacques
name: Van Beek, Paul
Publisher: name: CentMA
Year: 2013
Subjects: Food supply chain; local production; consumer preferences; producer requirements; retail requirements; chain coordination

description: This paper investigates the opportunities for farmers to produce for local consumers, based on a case study in the Dutch horticulture sector. Main requirements for the set-up of a local chain of supply chain actors are investigated. Producer requirements are added value, availability of time, infrastructure and training. Retailer requirements are quality of food, purchasing volumes, food safety, communication to consumers and traceability of products. For consumers taste/freshness, sustainability, health benefits and authenticity are important attributes of local foods. Based on literature review and interviews with stakeholders four possible strategies for local food chains are defined. The ‘keep it local’ strategy means that the local food supply chains will not make use of the current infrastructure of the marketing coop that acts as chain coordinator. Deliveries are directly between farmer and retail outlet. The local products - conventional supply chain strategy implies that current (non-local) supply chains are used to distribute local products. The supply chain planning will be more complex since products need to be separated per grower and distributed to several local supermarkets. In the ‘enabling producers’ strategy the marketing coop/chain coordinator is going to enable its member producers to sell their products locally. The marketing coop can support producers in for instance, billing and payments, marketing, logistics. The fourth strategy aims at strengthening current consumer communication strategies. It is argued that connecting producers and consumers, regardless of where they live is advantageous.
Conclusion is that strategy 3; ‘Enabling producers’, in combination with strategy 4; ‘Strengthening current consumer communication strategies’ are the most promising options in setting up local food supply chains. Strategies 1 and 2, where the marketing coop/chain coordinator itself takes on the challenge of setting up local food supply chains meets too much resistance from the retail companies (head-office level) and offers too little opportunities for providing added value to both producers and retailers.
description: International Journal on Food System Dynamics, Vol 4, No 1 (2013)