cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Structural change and flexibility in the Polish agriculture
Creators: name: Pieniadz, Agata
name: Renner, Swetlana
name: Petrick, Martin
name: Pieniadz, Agata
name: Renner, Swetlana
name: Petrick, Martin
Publisher: name: Unknown
Year: 2007
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: Farm Management
subject: structural change
subject: flexibility
subject: family farms
subject: transition
subject: adjustment
subject: Poland

description: Based on farm panel data we empirically investigate the determinants of Polish farm households 'flexibility from 1994 to 2001. We focus on scale flexibility (adjustment in production volume) and scope flexibility (adjustment in product mix). The findings of our fixed-effects regression provide evidence that smaller farms are more flexible, both with regard to scale and scope ofproduction. Farms with a higher share of variable costs tended to be more flexible, while producers who specialized in capital-intensive technologies turned out to be less flexible. Some results differ significantly from the prevailing expectations, in particular we found that farms where a generational succession took place displayed less flexibility over time. Moreover, access to off-farm income and finances have opposite effects on scale and scope flexibility. An explanation for these outcomes may be the varying term structure of liquidity sources. There are relevant differences in the strategies Polish farmers used to adjust to changing environmental conditions during transition, which should be taken into account in the design of supporting policies.
Tübingen-CL at SemEval-2024 Task 1:Ensemble Learning for Semantic Relatedness Estimation
Creators: name: Zhang, Leixin
name: Çöltekin, Çağrı
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: The paper introduces our system for SemEval-2024 Task 1, which aims to predict the relatedness of sentence pairs. Operating under the hypothesis that semantic relatedness is a broader concept that extends beyond mere similarity of sentences, our approach seeks to identify useful features for relatedness estimation. We employ an ensemble approach integrating various systems, including statistical textual features and outputs of deep learning models to predict relatedness scores. The findings suggest that semantic relatedness can be inferred from various sources and ensemble models outperform many individual systems in estimating semantic relatedness.
description: 5 pages
Attosecond resolution from free running interferometric measurements
Creators: name: Krüger, Constantin
name: Fuchs, Jaco
name: Cattaneo, Laura
name: Keller, Ursula
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Attosecond measurements reveal new physical insights in photo ionization dynamics from atoms, molecules and condensed matter. However, on such time scales even small timing jitter can significantly reduce the time resolution in pump-probe measurements. Here, we propose a novel technique to retrieve attosecond delays from a well established attosecond interferometric technique, referred to as Reconstruction of Attosecond Beating By Interference of Two-photon Transition (RABBITT), which is unaffected by timing jitter and significantly improves the precision of state-of-the-art experiments. We refer to this new technique as the Timing-jitter Unaffected Rabbitt Time deLay Extraction method, in short TURTLE. Using this TURTLE technique we could measure the attosecond ionization time delay between Argon and Neon in full agreement with prior measurements. The TURTLE technique allows for attosecond time resolution without pump-probe time delay stabilization and without attosecond pulses because only a stable XUV frequency comb is required as a pump. This will more easily enable attosecond measurements at FELs for example and thus provide a valuable tool for attosecond science. Here we also make a MATLAB code available for the TURTLE fit with appropriate citation in return.
Analysing and mobilising regional economic potentials as a chance for rural development - Interim results of the EU-lnterreg NIB project Parks & Economy
Creators: name: Neuwirth, Julia
name: Wagner, Klaus
name: Kallay, Tamas
name: Veres, Lajos
name: Antal, József
name: Neuwirth, Julia
name: Wagner, Klaus
name: Kallay, Tamas
name: Veres, Lajos
name: Antal, József
Publisher: name: Unknown
Year: 2007
Subjects: subject: Community/Rural/Urban Development
subject: Environmental Economics and Policy
subject: International Development
subject: nature parks
subject: cross-sectoral planning
subject: sustainable development
subject: regional analyses

description: Rural areas, which are declared as Nature or National Parks, often find themselves in a dilemma - on the one hand they are featured with unique natural conditions and landscapes, but on the other hand they are confronted with substantial problems in economic and demographic development. The Interreg IIIB project "Parks&Economy" tackles these discrepancies and aims at the appreciation of Nature Parks in rural areas and their sustainable development in natural, social and economic conditions using synergies between nature protection and the regional economy. For these purposes the project applies a common framework of methods consisting of analyses of regional strengths, weaknesses, opportunities and threats (SWOT), success factors, and stakeholders. Based on the results Development and Marketing Plans (DEMAP) are developed, which will be implemented in each of the eight involved project regions. The paper provides insights into the methods used and shows their application and results of three selected project regions in Hungary, Greece, and Italy. The emphasis of the paper concentrates on the methods of assessing the current status of a region and therefrom derived management plans, which can be useful for other regions interested in sustainable development in nature conservation areas as sign posts.
Relaxation energies and excited state structures of poly(para-phenylene)
Creators: name: Moore, Eric E.
name: Barford, William
name: Bursill, Robert J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the relaxation energies and excited state geometries of the light emitting polymer, poly(para-phenylene). We solve the Pariser-Parr-Pople-Peierls model using the density matrix renormalization group method. We find that the lattice relaxation of the dipole-active $1^1B_{1u}^-$ state is quite different from that of the $1^3B_{1u}^+$ state and the dipole-inactive $2^1A_g^+$ state. In particular, the $1^1B_{1u}^-$ state is rather weakly coupled to the lattice and has a rather small relaxation energy ca. 0.1 eV. In contrast, the $1^3B_{1u}^+$ and $2^1A_g^+$ states are strongly coupled with relaxation energies of ca. 0.5 and ca. 1.0 eV, respectively. By analogy to linear polyenes, we argue that this difference can be understood by the different kind of solitons present in the $1^1B_{1u}^-$, $1^3B_{1u}^+$ and $2^1A_g^+$ states. The difference in relaxation energies of the $1^1B_{1u}^-$ and $1^3B_{1u}^+$ states accounts for approximately one-third of the exchange gap in light-emitting polymers.
description: Submitted to Physical Review B
Position near the town - effects of urban areas on rural competitiveness and quality of life
Creators: name: Szekely, Vladimir
name: Czapiewski, Konrad
name: Szekely, Vladimir
name: Czapiewski, Konrad
Publisher: name: Unknown
Year: 2007
Subjects: subject: Community/Rural/Urban Development
subject: Labor and Human Capital
subject: Teaching/Communication/Extension/Profession
subject: relationship between urban and rural areas
subject: rural competititiveness
subject: quality of life
subject: Poland and Slovakia

description: The paper presents the approach to the analysis of spatial relationships between the town and surrounding rural areas. The main objective was to compare the competitiveness and living conditions of the areas located in the surroundings of towns with different number of inhabitants and situated in various regions of Slovakia and Poland. Competitiveness of a given area is understood as the ability to attract young and well-educated inhabitants. In turn the outfit of houses with the basic facilities of technical and communication infrastructure decides the living conditions.
Greece in the European Union and the Agro-food Industry: Spatial Reorganizations
Creators: name: Papageorgiou, Athanassions
name: Papageorgiou, Athanassions
Publisher: name: Unknown
Year: 2007
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Crop Production/Industries
subject: agro-food industry
subject: rural development
subject: fruit processing industry
subject: spatial reorganizations

description: Apart from the differentiation of productive capacity it brings about, industrial development also contributes to the employment and the redistribution of income among people, social classes and areas. Agricultural industries, in particular, usually located in rural areas, do not only contribute to the utilization of a significant part of agricultural production. Their expansion influences the socio-economic structure of areas. It creates jobs for the rural population, while one of the most important social impacts of their establishment has to do with their contribution to the change in mentality with regard to the role of women, who consist a large part of their employees. The future of many rural areas seems to depend on whether farming activities are combined with other side agricultural or non-agricultural activities. The important role played by agrofood industries in rural development obliges us to examine how this sector was influenced in the framework of the European Union from within the example of the fruit processing industry, which is the most internationalized branch of Greek economy. The accession of Greece to the European Union reinforced the course ofprofitable utilization of its comparative advantages, causing structural realignments and spatial reorganizations.
BRIEF REVIEW OF STUDIES OF RISK ANALYSIS IN THE PROCESS OF INDUSTRIAL ENVIRONMENTAL LICENSING IN MUNICIPALITY OF RIO DE JANEIRO
Creators: name: Nóbrega, Marcelo De Jesus Rodrigues Da
name: Teixeira, Beatriz Martins
name: Fernandes, José Luiz
name: Bentes, Flavio
Publisher: name: figshare
Year: 2020
Subjects: subject: 90702 Environmental Engineering Modelling
subject: FOS: Environmental engineering

description: The environmental licensing in the state of Rio de Janeiro has undergone major changes with regard to the technical-scientific, especially in regard Studies Risk Analysis Industrial, following an agreement between the City and the State of Rio de Janeiro in 01/08/2007. This particular case contains specific procedures developed to clarify the parameters needed to correct environmental permits, or by a wise policy of hiring specialized technical staff. Studies on Industrial Risk Analysis are extremely important to protect sensitive populations around the conventional installation or industrial accidents such as: dispersion of toxic substances, fires, explosions and shock waves. Such occurrences, in most cases, there are limited facilities of the company concerned. With this, this paper presents a systematic framework for the industrial activity on the risk along with preventive measures and mitigation of an accident, along with draft guidance for staff involved in the environmental licensing of such activities.
Charged particle and epicyclic motions around $4D$ Einstein-Gauss-Bonnet black hole immersed in an external magnetic field
Creators: name: Shaymatov, Sanjar
name: Vrba, Jaroslav
name: Malafarina, Daniele
name: Ahmedov, Bobomurat
name: Stuchlík, Zdeněk
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate particle motion in the vicinity of a $4D$ Einstein-Gauss-Bonnet (EGB) black hole immersed in external asymptotically uniform magnetic field. It is well known that magnetic fields can strongly affect charged particle motion in the black hole vicinity due to the Lorenz force. We find that the presence of the Gauss-Bonnet (GB) coupling gives rise to a similar effect, reducing the radius of the innermost stable circular orbit (ISCO) with respect to the purely relativistic Schwarzschild black hole. Further, we consider particle collisions in the black hole vicinity to determine the center of mass energy and show that this energy increases with respect to the Schwarzschild case due to the effect of the GB term. Finally, we consider epicyclic motion and its frequencies and resonance as a mean to test the predictions of the model against astrophysical observations. In particular we test which values of the parameters of the theory best fit the 3:2 resonance of high-frequency quasi-periodic oscillations in three low-mass X-ray binaries.
description: 36 pages, 8 figures, 1 table
TRESTLE: A Model of Concept Formation in Structured Domains
Creators: name: MacLellan, Christopher J.
name: Harpstead, Erik
name: Aleven, Vincent
name: Koedinger, Kenneth R.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The literature on concept formation has demonstrated that humans are capable of learning concepts incrementally, with a variety of attribute types, and in both supervised and unsupervised settings. Many models of concept formation focus on a subset of these characteristics, but none account for all of them. In this paper, we present TRESTLE, an incremental account of probabilistic concept formation in structured domains that unifies prior concept learning models. TRESTLE works by creating a hierarchical categorization tree that can be used to predict missing attribute values and cluster sets of examples into conceptually meaningful groups. It updates its knowledge by partially matching novel structures and sorting them into its categorization tree. Finally, the system supports mixed-data representations, including nominal, numeric, relational, and component attributes. We evaluate TRESTLE's performance on a supervised learning task and an unsupervised clustering task. For both tasks, we compare it to a nonincremental model and to human participants. We find that this new categorization model is competitive with the nonincremental approach and more closely approximates human behavior on both tasks. These results serve as an initial demonstration of TRESTLE's capabilities and show that, by taking key characteristics of human learning into account, it can better model behavior than approaches that ignore them.
description: 20 pages, 6 figures, 1 table
Spatial Variations in the Level of Socio-Economic Development of Rural Areas in Poland vis-a-vis Transformation Dynamics in the Pre-Accession Period
Creators: name: Rosner, Andrzej
name: Stanny, Monika
name: Zawalinska, Katarzyna
name: Rosner, Andrzej
name: Stanny, Monika
name: Zawalinska, Katarzyna
Publisher: name: Unknown
Year: 2007
Subjects: subject: Community/Rural/Urban Development
subject: Environmental Economics and Policy
subject: Research Methods/ Statistical Methods
subject: cohesion policy
subject: local development
subject: spatial variations

description: The aim of the research project was to find an answer to the question whether spatial variations in the level of socio-economic development of rural Poland are gradually disappearing thanks to the cohesion policy pursued in the country or still growing despite this policy. It was assumed that the course of ongoing transformation is dependent on two factors: cohesion policy and the well-known regularity that the effectiveness of investment is higher in more-devel-oped areas. Additionally, an attempt was made to determine how the discussed processes are influenced by policies pursued by local authorities. The analysis was performed on a set of 2,171 local units (LAU2). The research showed that the high level of socio-economic development is statistically strongly correlated with high transformation dynamics. Meanwhile, correlations between the existing level of development and the activity of local authorities and between transformation dynamics and the activity of local authorities are statistically insignificant. The most important conclusions from the research are as follows: • Spatial variations in the level of socio-economic development of rural areas are growing despite the policy to even out disparities (cohesion policy); • The actual development dynamics is very weakly correlated with the activity of local authorities in exploiting instruments to stimulate development; • Other factors (e.g. the location rent) have greater influence on spatial variations in development than the cohesion policy pursued.
Warped Fermions and Precision Tests
Creators: name: Carena, Marcela
name: Delgado, Antonio
name: Ponton, Eduardo
name: Tait, Tim M. P.
name: Wagner, C. E. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze the behavior of Standard Model matter propagating in a slice of AdS_5 in the presence of infrared-brane kinetic terms. Brane kinetic terms are naturally generated through radiative corrections and can also be present at tree level. The effect of the brane kinetic terms is to expell the heavy KK modes from the infrared-brane, and hence to reduce their coupling to the localized Higgs field. In a previous work we showed that sizable gauge kinetic terms can allow KK mode masses as low as a few TeV, compatible with present precision measurements. We study here the effect of fermion brane kinetic terms and show that they ameliorate the behavior of the theory for third generation fermions localized away from the infrared brane, reduce the contribution of the third generation quarks to the oblique correction parameters and mantain a good fit to the precision electroweak data for values of the KK masses of the order of the weak scale.
description: 25 pages, 4 figures, latex2e
Analysis of proteins isolated from dissolvable polyacrylamide gels using mass spectrometry
Creators: name: Ramanowski, Peter
Publisher: name: University of British Columbia
Year: 2010

description: Polyacrylamide gel electrophoresis is a simple yet powerful means of resolving complex mixtures of proteins and is used across many fields of research, including proteomics. The in-gel digestion has become the staple tool for identification of proteins run on SDS-PAGE gels but has unfortunate shortcomings such as unpredictable sequence coverage and the inability to obtain precise intact protein masses. Other methods such as electro-elution and passive diffusion evade these limitations by recovering intact protein but have difficulties isolating protein of high molecular weight. In this study, the use of a dissolvable SDS-PAGE gel for the isolation of intact proteins and subsequent analysis by mass spectrometry was evaluated. The resolutions of standard bis-acrylamide (BIS) crosslinked gels were compared to dissolvable gels crosslinked with bis-acrylylcystarnine (BAC) to show virtually identical resolving capabilities. The model protein a-casein was successfully extracted from BACcrosslinked gels along with several other standard proteins. Accurate intact mass measurements and specific enzymatic processing were done to show a mass shift corresponding to 8 phosphorylation sites. In addition, gel-extracted protein was digested in solution with several enzymes, including trypsin, to demonstrate higher peptide recoveries and sequence coverage compared to the widely used in-gel digestion approach. In light of these additional features which are not available with standard gels, such as the ability to obtain precise protein masses and increased sequence coverage when digested, BAC-crosslinked gels may well become a reasonable alternative for proteomics analyses.
Knowledge transfer in the process of rural development
Creators: name: Popescu, Gabriel
name: Popescu, Gabriel
Publisher: name: Unknown
Year: 2007
Subjects: subject: Community/Rural/Urban Development
subject: International Development
subject: Teaching/Communication/Extension/Profession
subject: co-operatives
subject: knowledge transfer
subject: rural development
subject: Romania

description: The collapse of the communist regime in Romania, in December 1989, determined, at a very short period of time, the disappearance of the co-operative sector of Bolshevik type, once Law 18 (Land Law) was enforced in February 1991, which initiated the land ownership reform. The causes of the liquidation offormer agricultural production co-operatives were many, as these entities had proved to be efficient tools in the communists' exercise of totalitarian power. In this context, the reactivation or more concretely, the reconfiguration of a new co-operative sector in full process of recognition and reconstitution of the private land ownership seemed impossible to achieve. From an economic perspective, the relaunch of the co-operative sector in agriculture, after 1991, took place under the background of certain "restrictions in the agricultural sector" generated by a complex set of factors, where the competition between the small-sized and the large-sized holdings has constantly prevailed ever since. Starting from these general considerations, we think that the Romanian agriculture first needs a new reconfiguration of the ownership and operation structures; in the second place, it needs a new approach to the agricultural market operation and development policy.
THESEUS Insights into ALP, Dark Photon and Sterile Neutrino Dark Matter
Creators: name: Thorpe-Morgan, Charles
name: Malyshev, Denys
name: Santangelo, Andrea
name: Jochum, Josef
name: Jäger, Barbara
name: Sasaki, Manami
name: Saeedi, Sara
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Through a series of simulated observations, we investigate the capability of the instruments aboard the forthcoming THESEUS mission for the detection of a characteristic signal from decaying dark matter (DM) in the keV-MeV energy range. We focus our studies on three well studied Standard Model extensions hosting axion-like particle, dark photon, and sterile neutrino DM candidates. We show that, due to the sensitivity of THESEUS' X and Gamma Imaging Spectrometer (XGIS) instrument, existing constraints on dark matter parameters can be improved by a factor of up to ~300, depending on the considered DM model and assuming a zero level of systematic uncertainty. We also show that even a minimal level of systematic uncertainty of 1% can impair potential constraints by one to two orders of magnitude. We argue that nonetheless, the constraints imposed by THESEUS will be substantially better than existing ones and will well complement the constraints of upcoming missions such as eXTP and Athena. Ultimately, the limits imposed by THESEUS and future missions will ensure a robust and thorough coverage of the parameter space for decaying DM models, enabling either a detection of dark matter or a significant improvement of relevant limits.
description: to match accepted for publication in Phys. Rev. D. version
Peak statistics for the primordial black hole abundance
Creators: name: Wu, Yi-Peng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The primordial black hole (PBH) abundance evaluated by the conventional Press-Schechter (PS) probability distribution is shown to be equivalent to the high-peak limit of a special point-like peak statistics via unphysical dimensionality reduction of the Bardeen-Bond-Kaiser-Szalay (BBKS) theory. The fact that PBHs are formed at high peak values $ν_c \gg 1$ leads to a systematic bias proportional to $ν_c^3$ between the predictions of the PS method and the physical BBKS peak theory in a general three-dimensional spatial configuration. As long as realistic PBHs are collapsed from three-dimensional density peaks in space, the systematic bias led by $ν_c^3$ implies a significant underestimation of the PBH abundance reported by the PS method. For the inflationary spectrum in the narrow-spike class, the underestimation in the extended mass functions is further enlarged by at least a factor of $10^{2.5}$ in all mass range, indicating a severer constraint to models in the favor of considering PBHs as all dark matter in a certain mass range.
description: 28 +1 pages, 11 figures; references added; version matched with publication; extended clarification on the inaccuracy of the Press-Schechter approach
The Society for Environmental Geochemistry and Health (SEGH): building for the future
Creators: name: ‪Mouataz Tarek‬‏
Publisher: name: figshare
Year: 2020
Subjects: subject: Geochemistry
subject: FOS: Earth and related environmental sciences
subject: 40202 Inorganic Geochemistry
subject: 40201 Exploration Geochemistry
subject: 40299 Geochemistry not elsewhere classified
subject: 111799 Public Health and Health Services not elsewhere classified
subject: FOS: Health sciences
subject: Geology
subject: 40603 Hydrogeology

description: SEGH has been a welcoming society for earlycareer researchers (ECRs) over the years, providing asupportive and encouraging atmosphere at conferences.However, a formal structure was required to continue to engage and support ECRs as they become established in their careers. In addition, retention and recognition of experienced scientists and practitioners were required for past and ongoing contributions to the long-standing success of SEGH since the initial formation in the early 1970s. The Society for Environmental Geochemistry and Health (SEGH) was first established in the USA to provide a forum for experts to work together in understanding the interaction between the geochemical environment and the health of plants, animals and humans.
Commercial banks' contribution to rural development in Romania: an overview
Creators: name: Lazea, Valentin
name: Lazea, Valentin
Publisher: name: Unknown
Year: 2007
Subjects: subject: Community/Rural/Urban Development
subject: International Development
subject: Public Economics
subject: banking services
subject: rural sector
subject: Romania

description: This paper represents a modest initial attempt to assess the involvement of the banking sector in the development of the rural sector in Romania during this country's first year as an EU member state. In theory, there should be at least two main reasons to make the rural sector an interesting proposition from the banks' perspective: the beginning of the disbursement of European funds, under the Common Agricultural Policy (CA.P.), and the remittances of Romanians working abroad, the majority of which come from the rural sector. In practice, however, this interest has failed, so far, to materialize: the banks have increased very marginally (or even decreased) their presence in the countryside. One aspect worth considering at this stage is, therefore, if the banking infrastructure has the characteristics of a public service, whether the state should sustain a (non-profit oriented) bank to supply the much needed services, until the private sector funds it worthwhile to get fully involved in activities that today are not very profitable. The paper is organized as follows: the first chapter looks at the supply of banking services, the second chapter tries to assess potential demand for such services and the final chapter draws some conclusions.
How to access QED at supercritical Coulomb field
Creators: name: Popov, R. V.
name: Shabaev, V. M.
name: Telnov, D. A.
name: Tupitsyn, I. I.
name: Maltsev, I. A.
name: Kozhedub, Y. S.
name: Bondarev, A. I.
name: Kozin, N. V.
name: Ma, X.
name: Plunien, G.
name: Stöhlker, T.
name: Tumakov, D. A.
name: Zaytsev, V. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In slow collisions of two bare nuclei with the total charge number larger than the critical value, $Z_{\rm cr} \approx 173$, the initially neutral vacuum can spontaneously decay into the charged vacuum and two positrons. Detection of the spontaneous emission of positrons would be the direct evidence of this fundamental phenomenon. However, the spontaneous emission is generally masked by the dynamical positron emission, which is induced by a strong time-dependent electric field created by the colliding nuclei. In our recent paper [I.A. Maltsev et al., Phys. Rev. Lett. 123, 113401 (2019)] it has been shown that the spontaneous pair production can be observed via measurements of the pair-production probabilities for a given set of nuclear trajectories. In the present paper, we have significantly advanced this study by exploring additional aspects of the process we are interested in. We calculate the positron energy spectra and find that these spectra can give a clear signature of the transition from the subcritical to the supercritical regime. It is found that focusing on a part of the positron spectrum, which accounts for the energy region where the spontaneously created positrons can contribute, allows to get a much stronger evidence of the transition to the supercritical mode, making it very well pronounced in collisions, for example, of two uranium nuclei. The possibility of extending this study to collisions of bare nuclei with neutral atoms is also considered. The probability of a vacancy in the lowest-energy state of a quasimolecule which is formed in collisions of a bare U nucleus with neutral U and Cm atoms has been calculated. The relatively large values of this probability make such collisions suitable for observing the vacuum decay.
description: 18 pages, 22 figures, 1 table Minor corrections, results unchanged
Tendencje zmian w spożyciu mięsa wołowego w Polsce w latach 2000-2009
Creators: name: Kosicka-Gębska, Małgorzata
name: Przeździecka, Natalia
name: Gębski, Jerzy
name: Kosicka-Gębska, Małgorzata
name: Przeździecka, Natalia
name: Gębski, Jerzy
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Consumer/Household Economics
subject: Food Consumption/Nutrition/Food Safety
subject: meat
subject: beef
subject: meat consumption
subject: / mięso
subject: wołowina
subject: spożycie mięsa

description: Consumption of beef in Poland in 2009 ranges at around 3,8 kg/year. Less and less interest in this kind of meat consumption stems both from its low quality offered in the retail trade, as well as its higher prices when compared to the prices of other poultry or pork meat products. An important factor determining the level of beef consumption are also food habits, ease of preparation, its availability, as well as the consumer awareness of a more positive impact the white meat has on their health. Poland has great potential for becoming an important producer of beef in the European Union. However, it is necessary to improve its quality, which may contribute to an increased consumer interest in this kind of meat. / Synopsis. Konsumpcja mięsa wołowego w Polsce w 2009 roku waha się na poziomie około 3,8 kg. Coraz mniejsze zainteresowanie konsumpcją mięsa tego rodzaju wynika zarówno z jego niskiej jakości oferowanej w handlu detalicznym, jak również z wyższych cen w stosunku do cen pozostałych produktów mięsnych, pochodzących z drobiu czy wieprzowiny. Istotnym czynnikiem warunkującym poziom spożycia mięsa wołowego są również przyzwyczajenia, łatwość przygotowania, dostępność, a także świadomość konsumentów o bardziej pozytywnym wpływie na ich zdrowie tzw. mięsa białego. Polska ma duże potencjalne warunki, aby być w Unii Europejskiej liczącym się producentem mięsa wołowego. Konieczna jest jednak poprawa jego jakości, która może przyczynić się do zwiększenia zainteresowania konsumentów mięsem tego rodzaju.
Observations of Massive Star Forming Regions with Water Masers: Mid-Infrared Imaging
Creators: name: De Buizer, J. M.
name: Radomski, J. T.
name: Telesco, C. M.
name: Pina, R. K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present here a mid-infrared imaging survey of 26 sites of water maser emission. Observations were obtained at the InfraRed Telescope Facility 3-m telescope with the University of Florida mid-infrared imager/spectrometer OSCIR, and the JPL mid-infrared camera MIRLIN. The main purpose of the survey was to explore the relationship between water masers and the massive star formation process. It is generally believed that water masers predominantly trace outflows and embedded massive stellar objects, but may also exist in circumstellar disks around young stars. We investigate each of these possibilities in light of our mid-infrared imaging. We find that mid-infrared emission seems to be more closely associated with water and OH maser emission than cm radio continuum emission from UC HII regions. We also find from the sample of sources in our survey that, like groups of methanol masers, both water and OH masers have a proclivity for grouping into linear or elongated distributions. We conclude that the vast majority of linearly distributed masers are not tracing circumstellar disks, but outflows and shocks instead.
description: 49 pages; 23 figures; To appear in February 2005 ApJS; To download a version with better quality figures, go to http://www.ctio.noao.edu/~debuizer/
PARALINGUISTIC ASPECTS OF NEGATIVE EXPRESSIVENESS: A SOCIOLINGUISTIC PERSPECTIVE
Creators: name: Turgunov, Shukhratjon
Publisher: name: Zenodo
Year: 2024

description: Paralinguistic features, which include non-verbal vocal cues such as pitch, tone, volume, intonation, and speech rate, play a crucial role in human communication, especially in conveying emotions like anger, frustration, and contempt. These elements shape how negativity is perceived in interactions, often intensifying or softening the impact of verbal messages. This paper explores the paralinguistic aspects of negative expressiveness, focusing on how such cues function in social interactions and how they contribute to the interpretation of negative emotions. Drawing from sociolinguistic research, this study examines the underlying mechanisms of paralinguistic communication, its cultural variations, and the gendered dimensions of negative expressiveness. Ultimately, it argues that paralinguistic elements are essential to understanding how negative emotions are communicated and interpreted across different social contexts.
Primordial Black Holes from No-Scale Supergravity
Creators: name: Nanopoulos, Dimitri V.
name: Spanos, Vassilis C.
name: Stamou, Ioanna D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate the primordial black hole abundance in the context of a Wess-Zumino type no-scale supergravity model. We modify the Kähler potential, by adding an extra exponential term. Using just one parameter in the context of this model, we are able to satisfy the Planck cosmological constraints for the spectral index $n_s$, the tensor-to-scalar ratio $r$, and to produce up to $\sim 20\%$ of the dark matter of the Universe in the form of primordial black holes.
description: 23 pages, latex, 8 figures, published version in PRD
Self-consistent T-matrix approach to gap renormalization in quantum magnets with bond disorder
Creators: name: Utesov, Oleg I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Based on the self-consistent T-matrix approximation (SCTMA), analytical theory of density of states (DOS) in three-dimensional quantum magnets with the bond disorder is proposed. It successfully describes DOS in both cases of resonant and non-resonant scattering which appearance is governed by the ratio of scattering length and the average distance between impurities. Corrections to the quasiparticles band gap in these cases are shown to be $\propto c^{2/3}$ and $\propto c$, respectively. Moreover, the theory yields a semi-circle form of DOS for the bound states inside the gap which results in highly nontrivial DOS in the intermediate parameters region between two limiting cases when the band DOS and the semi-circle are overlapped. Long-wavelength excitations are discussed. In the resonant regime their damping is almost constant $\propto c^{2/3}$, which according to Ioffe-Regel criterion means their localization. Applicability of the theory is illustrated by a quantitative description of the recent experimental data on spin-dimer system Ba$_{3-x}$Sr$_x$Cr$_2$O$_8$.
description: 8 pages, 4 figures
Longitudinal and anomalous Hall conductivity of a general two-band model
Creators: name: Mitscherling, Johannes
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We derive and analyze the longitudinal and the anomalous Hall conductivity for a general momentum-block-diagonal two-band model. This model captures a broad spectrum of physically very different systems including Néel antiferromagnetic and spiral spin density waves as well as models that involve spin-orbit interaction and are known to show topological properties. We present a complete microscopic derivation for finite temperature and constant scattering rate $Γ$ that is diagonal and equal, but arbitrarily large for both bands. We identify two criteria that allow for a unique and physically motivated decomposition of the conductivities. On the one hand, we distinguish intraband and interband contributions that are defined by the involved quasiparticle spectral functions. On the other hand, we distinguish symmetric and antisymmetric contributions that are defined by the symmetry under the exchange of the current and the electric field directions. The (symmetric) intraband contributions generalize the formula of standard Boltzmann transport theory, which is valid only in the clean limit (small $Γ$), whereas the interband contributions capture interband coherence effects beyond independent quasiparticles. We show that the symmetric interband contribution is a correction only present for finite $Γ$ and is controlled by the quantum metric. The antisymmetric interband contributions generalize the formula of the anomalous Hall conductivity in terms of the Berry curvature to finite $Γ$. We study the clean (small $Γ$) and dirty (large $Γ$) limit analytically. The connection between the presented derivation and the Bastin and Streda formalism is given. We apply our results to a Chern insulator, a ferromagnetic multi-d-orbital, and a spiral spin density wave model.
Detection of Cosmic Structures using the Bispectrum Phase. I. Mathematical Foundations
Creators: name: Thyagarajan, Nithyanandan
name: Carilli, Chris
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Many low-frequency radio interferometers are aiming to detect very faint spectral signatures from structures at cosmological redshifts, particularly of neutral Hydrogen using its characteristic 21 cm spectral line. Due to the very high dynamic range needed to isolate these faint spectral fluctuations from the very bright foregrounds, spectral systematics from the instrument or the analysis, rather than thermal noise, are currently limiting their sensitivity. Failure to achieve a spectral calibration with fractional inaccuracy $\lesssim 10^{-5}$ will make the detection of the critical cosmic signal unlikely. The bispectrum phase from interferometric measurements is largely immune to this calibration issue. We present a basis to explore the nature of bispectrum phase in the limit of small spectral fluctuations. We establish that they measure the intrinsic dissimilarity in the transverse structure of the cosmic signal relative to the foregrounds, expressed as rotations in the underlying phase angle. Their magnitude is related to the strength of the cosmic signal relative to the foregrounds. Using a range of sky models, we detail the behavior of bispectrum phase fluctuations using standard Fourier-domain techniques and find it comparable to existing approaches, with a few key differences. Mode-mixed foreground contamination is more pronounced than in existing approaches because the bispectrum phase is a product of three individual interferometric phases. The multiplicative coupling of foregrounds in the bispectrum phase fluctuations results in the mixing of foreground signatures with that of the cosmic signal. We briefly outline a variation of this approach to avoid extensive mode-mixing. Despite its limitations, the interpretation of results using bispectrum phase is possible with forward-modeling. Importantly, it is an independent and a viable alternative to existing approaches.
description: 27 pages, 22 figures (incl. sub-figures), published in PhRvD. Abstract may be slightly abridged compared to the actual manuscript due to length limitations on arXiv
Unique desert caves as a valuable geological resource: first detailed geological heritage assessment of the Sannur Cave, Egypt
Creators: name: ‪Mouataz Tarek‬‏
Publisher: name: figshare
Year: 2020
Subjects: subject: 49999 Earth Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Environmental Science
subject: Geology

description: Caves are commonly used for the purposes of geological conservation and tourism, but such experience is very limited in desert areas of northeastern Africa. The Sannur Cave discovered near Beni Suef in Egypt a few decades ago has been investigated in order to judge about its importance as geological heritage. It is established that the study territory contains three principal elements that can be attributed to geological heritage. These are the Sannur Cave itself, two quarries of the so-called Egyptian alabaster (recrystallized Eocene limestones used for ornamental stones and sculptures), and the geological landscape in thevicinities of the cave with some outcrops of Cenozoic rocks representing various facies and bearing numerous fossils. Two dominant geological heritage types of the study territory are geomorphological and sedimentary types, which represent globally and nationally unique phenomena. The Sannur Cave and the relevant features can be used for the purposes of geological, conservation, research, education, and tourism, which make it an important natural resource. Geopark creation can help in efficient exploitation of the latter.
Proces integracji europejskiej a napływ bezpośrednich inwestycji zagranicznych do sektora rolno-żywnościowego
Creators: name: Lizińska, Wiesława
name: Lizińska, Wiesława
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: International Development
subject: International Relations/Trade
subject: European integration
subject: foreign direct investment
subject: agri-food sector
subject: / integracja europejska
subject: bezpośrednie inwestycje zagraniczne
subject: sektor rolno- żywnościowy

description: The aim of the paper is to present changes in the foreign direct investments (FDI) inflow to Poland in comparison with that to the other countries of Middle and East Europe and the FDI inflow to the Polish agri-food sector in 1996-2008 in the context of European integration. The European integration is a significant factor for the FDI inflow to Poland, but it also depends on the world tendencies. The biggest foreign direct investment inflow to the food sector took place in 1996 and 1998. The highest value of foreign capital inflow to agriculture and fishing occured in 2008 (100 mio euro) and in 2004 (85,5 mio euro). The share of agriculture, fishing and food sector in the foreign capital inflow is low. The foreign capital inflow to agriculture and food sector had a growing trend already before the Polish accession (opposite to the total capital inflow). In the accession year there was an increase of foreign investments in total and in the analyzed sectors. / Synopsis. Celem pracy jest przedstawienie zmian napływu bezpośrednich inwestycji zagranicznych (BIZ) do Polski na tle napływu do krajów Europy Środkowo-Wschodniej w latach 2005-2008 oraz napływu BIZ do polskiego sektora rolno-żywościowego w latach 1996-2008 w kontekście procesu integracji europejskiej. Proces integracji europejskiej jest ważnym czynnikiem decydującym o napływie BIZ do Polski, ale jest on również uzależniony od tendencji ogólnoświatowych. Najwięcej kapitału zagranicznego do sektora produkcji artykułów spożywczych, napojów i wyrobów tytoniowych napłynęło w latach: 1996 i 1998. W przypadku rolnictwa i rybołówstwa największy napływ BIZ odnotowano w 2008 r. (100 mln euro) oraz w 2004 r. (85,5 mln euro). Udział napływu do rolnictwa, rybołówstwa oraz produkcji artykułów spożywczych w ogólnej wartości napływającego kapitału jest niewielki. Napływ kapitału zagranicznego do rolnictwa i przetwórstwa spożywczego miał tendencję wzrostową już przed akcesją (odwrotnie niż napływ kapitału ogółem). W roku akcesji odnotowano wzrost wartości zainwestowanego kapitału zagranicznego ogółem oraz w analizowanych sektorach.
Evolution of gravitational waves in the high-energy regime of brane-world cosmology
Creators: name: Hiramatsu, Takashi
name: Koyama, Kazuya
name: Taruya, Atsushi
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss the cosmological evolution of gravitational waves (GWs) after inflation in a brane-world cosmology embedded in five-dimensional anti-de Sitter (AdS_5) bulk spacetime. In a brane-world scenario, the evolution of GWs is affected by the non-standard cosmological expansion and the excitation of the Kaluza-Klein modes (KK-modes), which are significant in the high-energy regime of the universe. We numerically solve the wave equation of GWs in the Poincare coordinates of the AdS_5 spacetime. Using a plausible initial condition from inflation, we find that, while the behavior of GWs in the bulk is sensitive to the transition time from inflation to the radiation dominated epoch, the amplitude of GWs on the brane is insensitive to this time if the transition occurs early enough before horizon re-entry. As a result, the amplitude of GWs is suppressed by the excitation of KK-modes which escape from the brane into the bulk, and the effect may compensate the enhancement of the GWs by the non-standard cosmological expansion. Based on this, the influence of the high-energy effects on the stochastic background of GWs is discussed.
description: 18 pages, 4 figures