cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Memetic algorithms for ontology alignment
Creators: name: Vitiello, Autilia
Publisher: name: Universita degli studi di Salerno
Year: 2013
Subjects: subject: INF/01 INFORMATICA
subject: Algoritmi memetici
subject: Allineamento ontologico

description: 2011 - 2012
description: Semantic interoperability represents the capability of two or more systems to meaningfully and accurately interpret the exchanged data so as to produce useful results. It is an essential feature of all distributed and open knowledge based systems designed for both e-government and private businesses, since it enables machine interpretation, inferencing and computable logic. Unfortunately, the task of achieving semantic interoperability is very difficult because it requires that the meanings of any data must be specified in an appropriate detail in order to resolve any potential ambiguity. Currently, the best technology recognized for achieving such level of precision in specification of meaning is represented by ontologies. According to the most frequently referenced definition, an ontology is an explicit specification of a conceptualization, i.e., the formal specification of the objects, concepts, and other entities that are presumed to exist in some area of interest and the relationships that hold them. However, different tasks or different points of view lead ontology designers to produce different conceptualizations of the same domain of interest. This means that the subjectivity of the ontology modeling results in the creation of heterogeneous ontologies characterized by terminological and conceptual discrepancies. Examples of these discrepancies are the use of different words to name the same concept, the use of the same word to name different concepts, the creation of hierarchies for a specific domain region with different levels of detail and so on. The arising so-called semantic heterogeneity problem represents, in turn, an obstacle for achieving semantic interoperability... [edited by Author]
title: Phylogenetic Position of Pterocommatinae and Cavariella, and Implications for the Origins of Host Alternation in Aphids
Creators: name: Rowe, Carol A.
Publisher: name: Utah State University
Year: 2003

description: Aphids are morphologically simple. Their numerous hypothesized convergent reductions, such as reduced siphunculi length in association with ant attendance, have made it difficult to define morphological synapomorphies that are necessary for phylogenetic studies. Thus, I used molecular characters both to reexamine the phylogenetic relationships of Cavariella and Pterocommatinae within Aphididae, and to further map host associations and life cycles onto these phylogenies to better understand the evolutionary lability of host alternation within Aphididae. Independent and combined analyses were performed under unweighted parsimony and maximum likelihood criteria for sequences of mitochondrial cytochrome oxidase II plus tRNA-Leucine plus partial cytochrome oxidase I (COII + trnL), and nuclear elongation factor-α (EF1α). Shimodaira-Hasegawa likelihood ratio tests were also employed to test for statistically significant differences between: (1) the tree topologies obtained from the analyses in this study; and (2) topologies supporting the traditional phylogenetic hypotheses based upon morphological data. These analyses recovered various relationships contradicting the current morphology-based phylogeny: 1) a highly supported sister relationship of Pterocommatinae to Cavariella; 2) paraphyly of Myzinae and Anuraphidinae, as well as paraphyly in some genera within Dactynotinae; and 3) support for the sister relationship of Pterocommatinae/Cavariella/Liosomaphis to the remaining macrosiphines. There was also evidence within Aphididae for an evolutionary rapid radiation and multiple origins of host-alternation. These results imply the need for further molecular analyses in resolving relationships within Macrosiphini, and for defining the morphological attributes that characterize these relationships.
La blue economy in Basilicata. Risorse locali per lo sviluppo regionale
Creators: name: D’Oronzio, Maria Assunta
name: Licciardo, Francesco
Publisher: name: Italian Review of Agricultural Economics
Year: 2017

description: Fisheries of coastal and inland aquaculture areas are preparing for a second phase of local development using the Maritime Affairs and Fisheries Fund (EMFF) for the 2014-2020 period. Local communities will have new opportunities to address territorial challenges, combining European structural and investment funds (ESIFs) to deal with issues such as added value for local seafood products and aquaculture, for the improvement of the integrated management of coastal areas, support for fishing communities, and fish farmers and manufacturers to become both local drives and beneficiaries of the blue economy. The paper discusses distinctive elements of fisheries, aquaculture regional policy and Lucan processes along the coastal territory.
description: Italian Review of Agricultural Economics, Vol 72 No 1 (2017)
Enhanced Spin-Orbit Coupling in a Correlated Metal
Creators: name: Kubo, Katsunori
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the correlation effects on spin-orbit coupling (SOC) in a two-orbital Hubbard model on a square lattice by applying the variational Monte Carlo method. We consider an effective SOC constant $λ_{\text{eff}}$ in the one-body part of the variational wave function and mainly discuss the cases of the electron number per site $n=1$, that is, quarter filling. We find that $λ_{\text{eff}}$ is proportional to the bare value $λ$ and depends on the electron-electron interactions through $(U'-J')$ in a relatively wide parameter range in the paramagnetic (PM) phase, where $U'$ is the interorbital Coulomb interaction and $J'$ is the pair hopping interaction. Increasing the electron-electron interactions in the PM phase leads to a transition to an effective one-band state, in which the upper band becomes empty due to the enhanced $λ_{\text{eff}}$. We also construct phase diagrams considering magnetic order. The carrier doping effect on $λ_{\text{eff}}$ is also investigated. We find that $λ_{\text{eff}}$ enhances in a strongly correlated region around the Mott transition point and it is necessary to include the correlation effects beyond the Hartree-Fock approximation to describe the enhanced SOC properly.
description: 8 pages, 10 figures
Red Kites Milvus milvus wintering in their natal area: demographic, environmental, and temporary factors affecting spatiotemporal behaviour patterns
Creators: name: Škrábal, Jan
name: Literák, Ivan
name: Dostál, Marek
name: Raab, Rainer
name: Horal, David
name: Matušík, Hynek
name: Spakovszky, Péter
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Some birds of the central European population of Red Kite Milvus milvus are non-migratory and winter within their natal area, whereas others migrate to southern Europe or even to northern Africa. To determine what factors affect the area use and communal roost use by Red Kites wintering in their natal area. We studied spatiotemporal activity and factors affecting area use by Red Kites wintering in their natal area in the tripoint border area of Austria, the Czech Republic, and Slovakia, using GPS/GSM telemetry devices. We characterized home ranges used by wintering Red Kites in natal areas. Birds wintered for an average of 146 days and spent 88% of the time within temporary settlement areas (TSAs). The number of TSAs used by one Red Kite during the winter varied from 1–4 (mean ± sd = 2 ± 1); the mean (± sd) size of the home range of TSAs was 190 ± 144 km2 as a 95% minimum convex polygon, 136 ± 82 km2 as a 95% kernel density estimate, and 41 ± 34 km2 as a 50% kernel density estimate (core activity area). Age, breeding status, and percentage of forest habitat were the main factors negatively related to home range size. Winter duration and the number of TSAs were positively related to the size of the home range. Young birds (before first breeding) and males explored larger areas and used more TSAs during winter. Wintering of Red Kites in their natal area may relate to the social refuge–territory prospecting hypothesis, breeding site fidelity, wintering site fidelity, and/or mate loyalty, and this understanding could lead to better conservation of Red Kites in central Europe.
Additional file 4 of Heroin pipe distribution to reduce high-risk drug consumption behaviors among people who use heroin: a pilot quasi-experimental study
Creators: name: Fitzpatrick, Thomas
name: McMahan, Vanessa M.
name: Frank, Noah D.
name: Glick, Sara N.
name: Violette, Lauren R.
name: Davis, Shantel
name: Jama, Shilo
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 4: Supplementary tables.
title: Σχεδιασμός υπεραστικού κυκλικού κόμβου
titleType: AlternativeTitle
Creators: name: Καφφέ, Μαγδαληνή Δ.
Publisher: name: University of Thessaly
Year: 2020
Subjects: subject: Κόμβοι, Κυκλικοί -- Σχέδιο και κατασκευή
subject: Δρόμοι -- Μέτρα Ασφαλείας
subject: Οδικά έργα -- Σχεδιασμός

description: Σημείωση: διατίθεται συμπληρωματικό υλικό σε ξεχωριστό αρχείο.
Saline soils in in Italy: distribution, ecological processes and socioeconomic issues
Creators: name: Canfora, Loredana
name: Salvati, Luca
name: Benedetti, Anna
name: Dazzi, Carmelo
name: Lo Papa, Giuseppe
Publisher: name: Italian Review of Agricultural Economics
Year: 2017

description: Soils are crucial for crop production and for the major ecosystem services. They preserve and sustain life. Salinity is one of the main soil threats that reduce soil fertility and affect the crop production. In recent times, a great attention has been paid to the general shortage of arable land, and to the increasing demand for ecological restoration of areas affected by secondary salinization processes. Microorganisms in these habitats may share a strategy, may have developed multiple adaptations for maintaining populations, and cope eventually to extreme conditions by altruistic or cooperative behavior for maintaining their population active. The understanding and the knowledge of the composition and distribution of microorganisms in natural habitats can be interesting for ecological reasons and it is important to develop new restoration strategy of salt-affected soils.
description: Italian Review of Agricultural Economics, Vol 72 No 1 (2017)
Drivers of on-farm diversification in the Italian peri-urban agriculture
Creators: name: Henke, Roberto
name: Vanni, Francesco
Publisher: name: Italian Review of Agricultural Economics
Year: 2017

description: During the last decade peri-urban agriculture has been deeply investigated not only from an economic perspective, but also for its important impact on land use as well as on environmental and social dynamics. Building on the recent literature, the paper looks at the multifunctional role of peri-urban agriculture in Italy through a comparative analysis of a number of farms located within the main Italian urban poles. The analysis sheds light on both the internal and external drivers of farmers’ decision-making process about income diversification towards multifunctional activities. The article shows that, in the post productivist paradigm of multifunctional agriculture, peri-urban farms can play a pivotal role in a sustainable land use and enhancing the entrepreneurs’ behaviour in providing a broad variety of social and economic services to the urban population.
description: Italian Review of Agricultural Economics, Vol 72 No 1 (2017)
Efficiency and selection of benchmarks in milk production in Minas Gerais - Brazil
Creators: name: Teixeira Ervilha, Gabriel
name: Provezano Gomes, Adriano
Publisher: name: Italian Review of Agricultural Economics
Year: 2018

description: This study proposes to identify efficient production units in Brazilian dairy farming. For this purpose, Data Envelopment Analysis and its extensions were applied on the information gathered at 659 milk producing properties. The results obtained reveal the importance of technical efficiency at improving technical and economic performance of such properties. It is observed that the main benchmarks present higher results than the averages of the efficient properties. These results demonstrate the importance of working efficiently and that efficient practices should be disseminated in the dairy segment, directing the programs of rural extension and technology diffusion, creating a virtuous and beneficial cycle, not only for the producer, but for the whole milk production chain.
description: Italian Review of Agricultural Economics, Vol 72 No 2 (2017)
Improved initial guess for minimum energy path calculations
Creators: name: Smidstrup, Søren
name: Pedersen, Andreas
name: Stokbro, Kurt
name: Jónsson, Hannes
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A method is presented for generating a good initial guess of a transition path between given initial and final states of a system without evaluation of the energy. An objective function surface is constructed using an interpolation of pairwise distances at each discretization point along the path and the nudged elastic band method then used to find an optimal path on this image dependent pair potential (IDPP) surface. This provides an initial path for the more computationally intensive calculations of the true minimum energy path using some method of choice for evaluating the energy and atomic forces, for example by ab initio or density functional theory. The optimal path on the IDPP surface is significantly closer to the true minimum energy path than a linear interpolation of the Cartesian coordinates and, therefore, reduces the number of iterations needed to reach convergence and averts divergence in the electronic structure calculations when atoms are brought too close to each other in the initial path. The method is illustrated with three examples: (1) rotation of a methyl group in an ethane molecule, (2) an exchange of atoms in an island on a crystal surface, and (3) an exchange of two Si-atoms in amorphous silicon. In all three cases, the computational effort in finding the minimum energy path with DFT was reduced by a factor ranging from 50 % to an order of magnitude by using an IDPP path as the initial path. The time required for parallel computations was reduced even more because of load imbalance when linear interpolation of Cartesian coordinates was used.
Assessing drivers of winter abundance change in Eurasian Curlews Numenius arquata in England and Wales
Creators: name: Woodward, Ian D.
name: Austin, Graham E.
name: Boersch-Supan, Philipp H.
name: Thaxter, Chris B.
name: Burton, Niall H.K.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified

description: We assessed annual changes in Eurasian Curlew Numenius arquata wintering numbers at estuaries in England and Wales over 40 years against local and broadscale factors. Long-term trends likely reflect the cessation of hunting, but potentially also distributional changes associated with milder winters and changes in breeding success. To investigate whether local or broadscale factors might affect site-level annual abundance changes in Curlews in England and Wales. Relationships between Wetland Bird Survey (WeBS) counts from 46 estuaries from 1974/75 to 2016/17 and environmental data were assessed using Generalized Linear Mixed Models. The winter abundance trend of Curlews in England and Wales closely matched the decline of breeding populations since the mid-1990s. However, there are clear differences in the trends prior to this. Our analysis suggests that winter counts were influenced by the cessation of hunting and by weather, with abundance decreasing during cold winters and increasing the following winter. The influence of severe weather was less pronounced in the immediate aftermath of the hunting ban. An increase in numbers in the east of the UK also occurred during this period. No effects were detected for other environmental variables, but this may reflect the fact that only static variation between sites was tested for these variables rather than change. The increase in wintering Curlew numbers in the UK during the 1980s and early 1990s likely reflects a positive response to the cessation of hunting, but also a wider redistribution associated with milder winters across the European wintering range. Winter temperatures influenced annual abundance changes at individual sites, although impacts on detectability are difficult to disentangle from impacts on survival using WeBS counts alone. Factors operating during the breeding season are likely to be the main drivers of the current population decline.
Remarks on the Quadratic Orthogonal Bisectional Curvature
Creators: name: Broder, Kyle
Publisher: name: arXiv
Year: 2022
Subjects: subject: Differential Geometry (math.DG)
subject: Combinatorics (math.CO)
subject: Complex Variables (math.CV)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: We exhibit a curious link between the Quadratic Orthogonal Bisectional Curvature, combinatorics, and distance geometry. The Weitzenböck curvature operator, acting on real (1,1)--forms, is realized as the Dirichlet energy of a finite graph, weighted by a matrix of the curvature. These results also illuminate the difference in the nature of the Quadratic Orthogonal Bisectional Curvature and the Real Bisectional Curvature.
Semantically Configurable Consistency Analysis for Class and Object Diagrams
Creators: name: Maoz, Shahar
name: Ringert, Jan Oliver
name: Rumpe, Bernhard
Publisher: name: arXiv
Year: 2014
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Checking consistency between an object diagram (OD) and a class diagram (CD) is an important analysis problem. However, several variations in the semantics of CDs and ODs, as used in different contexts and for different purposes, create a challenge for analysis tools. To address this challenge in this paper we investigate semantically configurable model analysis. We formalize the variability in the languages semantics using a feature model: each configuration that the model permits induces a different semantics. Moreover, we develop a parametrized analysis that can be instantiated to comply with every legal configuration of the feature model. Thus, the analysis is semantically congured and its results change according to the semantics induced by the selected feature configuration. The ideas are implemented using a parametrized transformation to Alloy. The work can be viewed as a case study example for a formal and automated approach to handling semantic variability in modeling languages.
description: 15 pages, 7 figures. Received Best Paper Award and ACM Distinguished Paper Award at the MODELS 2011 Conference
Exploring Microenterprise Programs: Self-Employment in Disadvantaged Communities
Creators: name: Dancea, Marius Ioan
Publisher: name: Unknown
Year: 2004

description: Poverty continues to plague America’s urban communities. Many proposals have sought to address the issues related to poverty. Microenterprise programs are one such approach. Microenterprise programs design training programs that educate urban poor on how to establish and operate small businesses and structure microcredit activities that provide minimal loans to prospective or small business owners. By focusing on particular sites, such as ACCION Chicago, this article analyzes two aspects of microenterprise programs to argue that if such programs are to benefit those truly in need, they must simultaneously provide training and microcredit activities to the urban poor.
Controlling spin-orbit coupling to tailor type-II Dirac bands
Creators: name: Lam, Nguyen Huu
name: Nguyen, Phuong Lien
name: Choi, Byoung Ki
name: Ly, Trinh Thi
name: Duvjir, Ganbat
name: Rhee, Tae Gyu
name: Jo, Yong Jin
name: Kim, Tae Heon
name: Jozwiak, Chris
name: Bostwick, Aaron
name: Rotenberg, Eli
name: Hwang, Younghun
name: Chang, Young Jun
name: Lee, Jaekwang
name: Kim, Jungdae
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: NiTe2, a type-II Dirac semimetal with strongly tilted Dirac band, has been explored extensively to understand its intriguing topological properties. Here, using density-functional theory (DFT) calculations, we report that the strength of spin-orbit coupling (SOC) in NiTe2 can be tuned by Se substitution. This results in negative shifts of the bulk Dirac point (BDP) while preserving the type-II Dirac band. Indeed, combined studies using scanning tunneling spectroscopy (STS) and angle-resolved photoemission spectroscopy (ARPES) confirm that the BDP in the NiTe2-xSex alloy moves from +0.1 eV (NiTe2) to -0.3 eV (NiTeSe) depending on the Se concentrations, indicating the effective tunability of type-II Dirac fermions. Our results demonstrate an approach to tailor the type-II Dirac band in NiTe2 by controlling the SOC strength via chalcogen substitution. This approach can be applicable to different types of topological materials.
description: 25 pages, 4 figures
Technological clusters as a hub for the innovation: from the theoretical model to an Italian regional case study in the agrifood sector
Creators: name: Bentivoglio, Deborah
name: Giampietri, Elisa
name: Schiavone, Pasquale
Publisher: name: Italian Review of Agricultural Economics
Year: 2018

description: Innovations are necessary for growth and competitiveness. Although agrifood production represents a pillar of Italian economy, it suffers a low propensity towards innovation. In line with current EU policy strategies, the creation of regional clusters promotes the innovation in order to increase the competitiveness of companies. This work aims to investigate the needs for innovation among SMEs in Italy, through a survey conducted on a regional cluster in Marche Region. Findings show a clear propensity of companies to innovate, although they face some structural constraints. Improving quality in each step of the supply chain is found to be the most relevant demand for innovation, being a successful strategy both for companies to compete in the global market and for the regional development.
description: Italian Review of Agricultural Economics, Vol 72 No 2 (2017)
The Size Evolution of Elliptical Galaxies
Creators: name: Xie, Lizhi
name: Guo, Qi
name: Cooper, Andrew P.
name: Frenk, Carlos S.
name: Li, Ran
name: Gao, Liang
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent work has suggested that the amplitude of the size mass relation of massive early type galaxies evolves with redshift. Here we use a semi-analytical galaxy formation model to study the size evolution of massive early type galaxies. We find this model is able to reproduce the amplitude of present day amplitude and slope of the relation between size and stellar mass for these galaxies, as well as its evolution. The amplitude of this relation reflects the typical compactness of dark halos at the time when most of the stars are formed. This link between size and star formation epoch is propagated in galaxy mergers. Mergers of high or moderate mass ratio (less than 1:3) become increasingly important with increasing present day stellar mass for galaxies more massive than $10^{11.4}M_{\odot}$. At lower masses, low mass ratio mergers play a more important role. In situ star formation contribute more to the size growth than it does to stellar mass growth. We also find that, for ETGs identified at $z=2$, minor mergers dominate subsequent growth both for stellar mass and in size, consistent with earlier theoretical results.
description: 11 pages, 8 figures, 1 table, submitted to MNRAS
Machine-learning-assisted analysis of transition metal dichalcogenide thin-film growth
Creators: name: Kim, Hyuk Jin
name: Chong, Minsu
name: Rhee, Tae Gyu
name: Khim, Yeong Gwang
name: Jung, Min-Hyoung
name: Kim, Young-Min
name: Jeong, Hu Young
name: Choi, Byoung Ki
name: Chang, Young Jun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In situ reflective high-energy electron diffraction (RHEED) is widely used to monitor the surface crystalline state during thin-film growth by molecular beam epitaxy (MBE) and pulsed laser deposition. With the recent development of machine learning (ML), ML-assisted analysis of RHEED videos aids in interpreting the complete RHEED data of oxide thin films. The quantitative analysis of RHEED data allows us to characterize and categorize the growth modes step by step, and extract hidden knowledge of the epitaxial film growth process. In this study, we employed the ML-assisted RHEED analysis method to investigate the growth of 2D thin films of transition metal dichalcogenides (ReSe2) on graphene substrates by MBE. Principal component analysis (PCA) and K-means clustering were used to separate statistically important patterns and visualize the trend of pattern evolution without any notable loss of information. Using the modified PCA, we could monitor the diffraction intensity of solely the ReSe2 layers by filtering out the substrate contribution. These findings demonstrate that ML analysis can be successfully employed to examine and understand the film-growth dynamics of 2D materials. Further, the ML-based method can pave the way for the development of advanced real-time monitoring and autonomous material synthesis techniques.
description: 21 pages, 4 figures
Atomic Gold Ions Clustered with Noble Gases: Helium, Neon, Argon, Krypton, and Xenon
Creators: name: Martini, Paul
name: Kranabetter, Lorenz
name: Goulart, Marcelo
name: Rasul, Bilal
name: Gatchell, Michael
name: Scheier, Paul
name: Echt, Olof
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: High-resolution mass spectra of helium droplets doped with gold and ionized by electrons reveal He$_n$Au$^+$ cluster ions. Additional doping with heavy noble gases results in NenAu+, Ar$_n$Au$^+$, Kr$_n$Au$^+$, and Xe$_n$Au$^+$ cluster ions. The high stability predicted for covalently bonded Ar$_2$Au$^+$, Kr$_2$Au$^+$, and Xe$_2$Au$^+$ is reflected in their relatively high abundance. Surprisingly, the abundance of Ne$_2$Au$^+$ which is predicted to have zero covalent bonding character and no enhanced stability features a local maximum, too. The predicted size and structure of complete solvation shells surrounding ions with essentially non-directional bonding depends primarily on the ratio $σ$* of the ion-ligand $versus$ the ligand-ligand distance. For Au$^+$ solvated in helium and neon the ratio $σ$* is slightly below 1, favoring icosahedral packing in agreement with a maximum observed in the corresponding abundance distributions at $n$ = 12. He$_n$Au$^+$ appears to adopt two additional solvation shells of $I_h$ symmetry, containing 20 and 12 atoms, respectively. For Ar$_n$Au$^+$, with $σ$* $\approx$ 0.67, one would expect a solvation shell of octahedral symmetry, in agreement with an enhanced ion abundance at $n$ = 6. Another anomaly in the ion abundance at Ar$_9$Au$^+$ matches a local maximum in its computed dissociation energy.
Topological edge solitons in \{chi}(2) waveguide arrays
Creators: name: Kartashov, Yaroslav V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We address the formation of \{chi}(2) topological edge solitons emerging in topologically nontrivial phase in Su-Schrieffer-Heeger (SSH) waveguide arrays. We consider edge solitons, whose fundamental frequency (FF) component belongs to the topological gap, while phase mismatch determines whether second harmonic (SH) component falls into topological or trivial forbidden gaps of the spectrum for SH wave. Two representative types of edge solitons are found, one of which is thresholdless and bifurcates from topological edge state in FF component, while other exists above power threshold and emanates from topological edge state in SH wave. Both types of solitons can be stable. Their stability, localization degree, and internal structure strongly depend on phase mismatch between FF and SH waves. Our results open new prospects for control of topologically nontrivial states by parametric wave interactions.
description: 4 pages, 5 figures
Impact of mergers and acquisitions on the performance of the sugar and alcohol industry in Brazil
Creators: name: De Lima Siqueira, Paulo Henrique
name: Assis Shikida, Pery Francisco
name: Cardoso, Bárbara Françoise
Publisher: name: Italian Review of Agricultural Economics
Year: 2018

description: The aim of this paper is to verify how mergers and acquisitions occurred in the sugar and alcohol industry since 2007, identifying the reasons that may have generated financial difficulties for some of the traditional companies and large national and foreign groups, and how these transactions have behaved in the last years. It was noted that from 2007 to 2013 many groups bought many traditional industrial plants in the sugar and alcohol sector, which were experiencing financial difficulties, mainly due to the international financial crisis of 2008. From 2013, many of these large buyer groups did not have the expected return and have been experiencing the same difficulties as traditional groups, and have been acquired by others more discerning groups in their choices.
description: Italian Review of Agricultural Economics, Vol 72 No 2 (2017)
Solvation of Silver Ions in Noble Gases He, Ne, Ar, Kr, and Xe
Creators: name: Mahmoodi-Darian, Masoomeh
name: Martini, Paul
name: Tiefenthaler, Lukas
name: Kočišek, Jaroslav
name: Scheier, Paul
name: Echt, Olof
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: We use a novel technique to solvate silver cations in small clusters of noble gases. The technique involves formation of large, superfluid helium nanodroplets that are subsequently electron ionized, mass-selected by deflection in an electric field, and doped with silver atoms and noble gases (Ng) in pickup cells. Excess helium is then stripped from the doped nanodroplets by multiple collisions with helium gas at room temperature, producing cluster ions that contain no more than a few dozen noble gas atoms and just a few (or no) silver atoms. Under gentle stripping conditions helium atoms remain attached to the cluster ions, demonstrating their low vibrational temperature. Under harsher stripping conditions some of the heavier noble gas atoms will be evaporated as well, thus enriching stable clusters Ng$_n$Ag$_m^+$ at the expense of less stable ones. This results in local anomalies in the cluster ion abundance which is measured in a high-resolution time-of-flight mass spectrometer. Based on these data we identify specific "magic" sizes n of particularly stable ions. There is no evidence though for enhanced stability of Ng$_2$Ag$^+$, in contrast to the high stability of Ng$_2$Au$^+$ that derives from the covalent nature of the bond for heavy noble gases. "Magic" sizes are also identified for Ag$_2^+$ dimer ions complexed with He or Kr. Structural models will be tentatively proposed. A sequence of magic numbers $n$ = 12, 32, 44, indicative of three concentric solvation shells of icosahedral symmetry, is observed for He$_n$H$_2$O$^+$.
Long-Run Projections of Food Processing and Marketing in the West
Creators: name: Stallings, Dale G.
name: Stallings, Dale G.
Publisher: name: Unknown
Year: 1965
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Labor and Human Capital
subject: Marketing
subject: FOS: Economics and business
subject: Production Economics

description: Excerpts from the report Summary: The rapid growth of population, income, and agricultural production in the Western Region raises questions about future changes in the production, processing, and marketing of farm food products in the Region. Shifts in consumption from fresh fruits and vegetables and relatively unprocessed foods to processed foods and from starchy foods to meat products and processed fruits and vegetables affect to some extent, the quantities of these foods produced within the Region. Such shifts also affect the quantities of food shipped into and out of the Region and the kinds of processing and distribution services required. Based on the projections of this study, it is likely that the Western Region will tend to specialize more in the production, processing, and marketing of fresh and processed fruits, vegetables, nuts, and beet sugar, and to ship in more dairy products, meat, poultry, and flour products. Production as a percentage of consumption within the Western Region will increase only slightly for the former group of commodities and either decline slowly or remain about the same for the latter commodities. However, small changes in the ratio of production to consumption in the Region result in large changes in the quantities shipped in or out, because of the growth and size of the market in the Western Region.
An overview of the planned CCAT software system
Creators: name: Jenness, Tim
name: Shepherd, Martin C.
name: Schaaf, Reinhold
name: Sayers, Jack
name: Ossenkopf, Volker
name: Nikola, Thomas
name: Marsden, Gaelen
name: Higgins, Ronan
name: Edwards, Kevin
name: Brazier, Adam
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: CCAT will be a 25m diameter sub-millimeter telescope capable of operating in the 0.2 to 2.1mm wavelength range. It will be located at an altitude of 5600m on Cerro Chajnantor in northern Chile near the ALMA site. The anticipated first generation instruments include large format (60,000 pixel) kinetic inductance detector (KID) cameras, a large format heterodyne array and a direct detection multi-object spectrometer. The paper describes the architecture of the CCAT software and the development strategy.
description: 17 pages, 6 figures, to appear in Software and Cyberinfrastructure for Astronomy III, Chiozzi & Radziwill (eds), Proc. SPIE 9152, paper ID 9152-109
On ordered Ramsey numbers of tripartite 3-uniform hypergraphs
Creators: name: Balko, Martin
name: Vizer, Máté
Publisher: name: arXiv
Year: 2022
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: For an integer $k \geq 2$, an ordered $k$-uniform hypergraph $\mathcal{H}=(H,<)$ is a $k$-uniform hypergraph $H$ together with a fixed linear ordering $<$ of its vertex set. The ordered Ramsey number $\overline{R}(\mathcal{H},\mathcal{G})$ of two ordered $k$-uniform hypergraphs $\mathcal{H}$ and $\mathcal{G}$ is the smallest $N \in \mathbb{N}$ such that every red-blue coloring of the hyperedges of the ordered complete $k$-uniform hypergraph $\mathcal{K}^{(k)}_N$ on $N$ vertices contains a blue copy of $\mathcal{H}$ or a red copy of $\mathcal{G}$. The ordered Ramsey numbers are quite extensively studied for ordered graphs, but little is known about ordered hypergraphs of higher uniformity. We provide some of the first nontrivial estimates on ordered Ramsey numbers of ordered 3-uniform hypergraphs. In particular, we prove that for all $d,n \in \mathbb{N}$ and for every ordered $3$-uniform hypergraph $\mathcal{H}$ on $n$ vertices with maximum degree $d$ and with interval chromatic number $3$ there is an $\varepsilon=\varepsilon(d)>0$ such that $$\overline{R}(\mathcal{H},\mathcal{H}) \leq 2^{O(n^{2-\varepsilon})}.$$ In fact, we prove this upper bound for the number $\overline{R}(\mathcal{G},\mathcal{K}^{(3)}_3(n))$, where $\mathcal{G}$ is an ordered 3-uniform hypergraph with $n$ vertices and maximum degree $d$ and $\mathcal{K}^{(3)}_3(n)$ is the ordered complete tripartite hypergraph with consecutive color classes of size $n$. We show that this bound is not far from the truth by proving $\overline{R}(\mathcal{H},\mathcal{K}^{(3)}_3(n)) \geq 2^{Ω(n\log{n})}$ for some fixed ordered $3$-uniform hypergraph $\mathcal{H}$.
description: 16 pages
Atomic arrangement of van der Waals heterostructures using X-ray scattering and crystal truncation rod analysis
Creators: name: Kim, Ryung
name: Choi, Byoung Ki
name: Lee, Kyeong Jun
name: Kim, Hyuk Jin
name: Lee, Hyun Hwi
name: Rhee, Tae Gyu
name: Khim, Yeong Gwang
name: Chang, Young Jun
name: Chang, Seo Hyoung
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Vanadium diselenide (VSe2) has intriguing physical properties such as unexpected ferromagnetism at the two-dimensional limit. However, the experimental results for room temperature ferromagnetism are still controversial and depend on the detailed crystal structure and stoichiometry. Here we introduce crystal truncation rod (CTR) analysis to investigate the atomic arrangement of bilayer VSe2 and bilayer graphene (BLG) hetero-structures grown on a 6H-SiC(0001) substrate. Using non-destructive CTR analysis, we were able to obtain electron density profiles and detailed crystal structure of the VSe2/BLG heterostructures. Specifically, the out-of-plane lattice parameters of each VSe2 layer were modulated by the interface compared to that of the bulk VSe2 1T phase. The atomic arrangement of the VSe2/BLG heterostructure provides deeper understanding and insight for elucidating the magnetic properties of the van der Waals heterostructure.
description: 17 pages, 4 figures
Antiproton constraints on the GeV gamma-ray excess: a comprehensive analysis
Creators: name: Cirelli, Marco
name: Gaggero, Daniele
name: Giesen, Gaëlle
name: Taoso, Marco
name: Urbano, Alfredo
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A GeV gamma-ray excess has possibly been individuated in Fermi-LAT data from the Galactic Center and interpreted in terms of Dark Matter (DM) annihilations, either in hadronic (essentially $b\bar{b}$) or leptonic channels. In order to test this tantalizing interpretation, we address two issues: (i) we improve the computation of secondary emission from DM (Inverse Compton and Bremsstrahlung) with respect to previous works, confirming it to be very relevant for determining the DM spectrum in the leptonic channels, so that any conclusion on the DM nature of the signal critically depends on this contribution; (ii) we consider the constraints from antiprotons on the DM hadronic channel, finding that the uncertainties on the propagation model, and in particular on the halo height, play a major role. Moreover, we discuss the role of solar modulation, taking into account possible charge dependent effects whose importance is estimated exploiting detailed numerical tools. The limits that we obtain severely constrain the DM interpretation of the excess in the hadronic channel, for standard assumptions on the Galactic propagation parameters and solar modulation. However, they considerably relax if more conservative choices are adopted.
description: 22 pages, 6 figures, 2 tables
Cosmology and multi-messenger astrophysics with next generation GRB missions
Creators: name: Amati, Lorenzo
Publisher: name: Zenodo
Year: 2023

description: Gamma-Ray Bursts constitute one of the most fascinating and relevant phenomena in modern science, with
 strong implications for several fields of astrophysics, cosmology and fundamental physics. Indeed, the huge
 luminosity, the redshift distribution extending at least up to z∼10 and the association with the explosive death
 of very massive stars make long GRBs (i.e., those lasting up to a few minutes) potentially extremely powerful
 probes for investigating the early Universe (pop-III stars, cosmic re-ionization, SFR and metallicity evolution
 up to the ’cosmic dawn’) and measuring cosmological parameters. The combination of extreme distances, the
 huge number of photons emitted over about three orders of magnitude in photon energy and the variability
 down to few ms makes these phenomena also a uniquely powerful and promising tool for performing tests of
 fundamental physics like Lorentz Invariance Violation (LIV) with unprecedented accuracy. At the same time,
 as demonstrated by the GW170817 event, short GRBs (lasting no more than a few s) are the most prominent
 electromagnetic counterpart of gravitational-wave sources like NS-NS and NS-BH merging events, and both
 long and short GRBs are expected to be associated with neutrino emission. My review will include the status,
 concepts and expected performances of space mission projects (e.g, THESEUS, Gamow Explorer) aiming at
 fully exploiting these unique potentialities of the GRB phenomenon, thus providing an ideal synergy with the
 large e.m. facilities of the future like LSST, ELT, TMT, SKA, CTA, ATHENA in the e.m. domain, advanced
 second generation (2G++) and third generation (3G) GW detectors and future large neutrino detectors (e.g.,
 Km3NET).
La valutazione on-going dei Programmi di Sviluppo Rurale 2007-20131
Creators: name: Cristiano, Simona
name: Licciardo, Francesco
Publisher: name: Italian Review of Agricultural Economics
Year: 2018

description: The on-going evaluation is established as part of Rural Development Programmes 2007-13 (RDPs) and includes the ex-ante, mid-term, ex-post evaluations and all the other activities which the Managing Authorities (MAs) consider useful for improving quality, efficiency and effectiveness of the programme. The Common Monitoring and Evaluation Framework (CMEF) provides a comprehensive set of guidance documents on the general principles, tasks and governance of evaluations, measure fiches, common evaluation questions, common indicators and their choice, definition and use. The Italian experience is that, beyond accountability purposes, the on-going evaluation support the continuous learning on the programme implementation and the capacity building of the MAs.
description: Italian Review of Agricultural Economics, Vol 72 No 2 (2017)
title: Computer Networks and the Teaching of English as a Second Language: How Networks Affect Second Language Acquisition
Creators: name: Reed-Perez, Kirstin J.
Publisher: name: Old Dominion University Libraries
Year: 1994

description: This thesis examines how computer networks affect second language acquisition. Two different types of networked technology available, asynchronized and synchronized networks, are currently being used in the fields of ESL/EFL, foreign language teaching, English composition, and literary studies. Chapter one reviews these two technologies and their use in the classroom. Chapter two describes how the Internet makes available resources not possible in traditional classroom settings. Chapter three considers potential problems that may arise in the networked classroom, such as student and teacher apprehension of technology. Chapter four discusses how student learning styles are affected by synchronized and asynchronized networks, particularly with error correction. Chapter five explores specific advantages of networking. Computers bring a context into the classroom that language teaching methodologies, such as Suggestopedia, Total Physical Response, and Community Language Learning try to create. Finally, chapter six investigates how the relationships between teachers and students become more egalitarian in networked classrooms.
Fair trade coffee potential market in Italy: a roaster sector analysis
Creators: name: Pedini, Sérgio
name: Cecchini, Lucio
name: Santucci, Fabio Maria
Publisher: name: Italian Review of Agricultural Economics
Year: 2018

description: This paper analyses the Italian coffee market within the Fair Trade Movement - FTM. Coffee is one of the main commodities and the most important FTM product, but with a low Italian participation. This research aims at analyzing the Italian roasters, including their current behavior and their potential. All Italian roasting companies have been contacted, but only 54 out of 567 have responded. The results indicate a low level of knowledge about the FTM requirements. Consequently, the Italian companies are losing this opportunity to exploit this market segment. Italian roasters should acquire more information about the FTM and its potentials, as to enter more aggressively into FTM markets, combining with the consolidated fame of the Italian coffee.
description: Italian Review of Agricultural Economics, Vol 72 No 2 (2017)
Light Neutralino Dark Matter in $U(1)^\prime$ models
Creators: name: Frank, Mariana
name: Mondal, Subhadeep
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze the prospects for light neutralino dark matter in the minimal supersymmetric model extended by a $U(1)$ gauge group. We allow the neutralino to be an arbitrary admixture of singlet and doublet higgsinos, as well as of the three gauginos, and we require agreement with the data from the direct and indirect dark matter detection experiments, while maintaining consistency of the model with the relic density and with the recent Higgs data from the LHC. The constraints have implications for the structure of the lightest neutralino as a dark matter candidate, indicating that it is largely singlino, and its mass can be as light as $\sim 20 $ GeV.
description: 27 pages, 7 figures
CD2Alloy: Class Diagrams Analysis Using Alloy Revisited
Creators: name: Maoz, Shahar
name: Ringert, Jan Oliver
name: Rumpe, Bernhard
Publisher: name: arXiv
Year: 2014
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: We present CD2Alloy, a novel, powerful translation of UML class diagrams (CDs) to Alloy. Unlike existing translations, which are based on a shallow embedding strategy, and are thus limited to checking consistency and generating conforming object models of a single CD, and support a limited set of CD language features, CD2Alloy uses a deeper embedding strategy. Rather than mapping each CD construct to a semantically equivalent Alloy construct, CD2Alloy defines (some) CD constructs as new concepts within Alloy. This enables solving several analysis problems that involve more than one CD and could not be solved by earlier works, and supporting an extended list of CD language features. The ideas are implemented in a prototype Eclipse plug-in. The work advances the state-of-the-art in CD analysis, and can also be viewed as an interesting case study for the different possible translations of one modeling language to another, their strengths and weaknesses.
description: 15 pages, 8 figures