cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Hydroscrew turbines feasibility study
Creators: name: Recalcatti, Mauricio
Publisher: name: TU Wien
Year: 2018
Subjects: subject: Screw turbine
subject: hydropower
subject: energy production
subject: renewable energy
subject: Archimedean Turbines
subject: Screw turbine
subject: hydropower
subject: energy production
subject: renewable energy
subject: Archimedean Turbines

description: The growing demand for electric energy and the search for renewable and clean generation sources, refer to the study and manufacture of machines, equipment or devices capable of producing electricity with minimal losses from natural resources still available. From many diverse ways of generating this energy, in the Brazilian scenario, the hydroelectric plants gained great relevance due to the characteristics of the national territory. The large number of rivers and pluviometric precipitation in practically whole country results in a great potential of hydropower generation for Brazil. Thus, the small or micro Hydroelectric Generating Centers (MHP) are inserted in this context as an attractive alternative for the generation of clean energy with very low environmental impact. Due to their small size, these types of plants have low implementation costs, as well as causing less damage to the environment when compared to the Large Hydropower Plants (LPP) or other sources of energy, like coal and oil Power Plant. This study analyzes the economic viability for the implantation of Screw Turbines, by means of a real case study, in the Southern region of Brazil. For this purpose, asset valuation tools are used as net present value of the discounted cash flows and calculation of the internal rate of return of the Power Plant. The net present value (NPV) and the internal rate of return (IRR) of the Hydroelectric Generating Station are calculated based on the sales value of the energy obtained by the entrepreneurs in the last alternative energy auction. In view of the results obtained, concludes that the implementation of the Mini Hydropower Plant is feasible economically for all scenarios and adds more value to the shareholder than alternatives of the financial market of equivalent risk.
AN ANALYSIS OF ACCESS TO CREDIT MARKETS AND THE PERFORMANCE OF SMALL SCALE AGRO- BASED ENTERPRISES IN THE NIGER DELTA REGION OF NIGERIA
Creators: name: Essien, Ubon Asuquo
name: Arene, Chukwuemeka John
name: Essien, Ubon Asuquo
name: Arene, Chukwuemeka John
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: Financial Economics
subject: Institutional and Behavioral Economics
subject: Informal Credit
subject: Formal Credit
subject: Credit Access
subject: Small Scale Agro-based Enterprises
subject: Niger Delta Region
subject: Nigeria.

description: The study was designed to examine access to credit markets and performance by small scale agro-based enterprises in the Niger Delta. A multistage sampling technique was adopted in selecting 264 and 96 agro-based enterprises that accessed informal and formal credit respectively through the use of structured questionnaire and oral interview. The logit model was used to examine the factors that had significant influence on credit access by the enterprises in the region. Results revealed that the factors that significantly influence informal credit access by small scale agro-based enterprises are Gender, Age and Social Capital, while factors that influence formal credit access are Education, Age, Enterprise size and Collateral. Majority of enterprises accessed informal credit but the few that accessed formal credit performed better. Government should ensure easy access to formal finance by small agro-based enterprises in the region as they are the engine of economic development.
Stress Correlations in Frictional Granular Media
Creators: name: Lemaitre, Anael
name: Mondal, Chandana
name: Procaccia, Itamar
name: Roy, Saikat
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: This paper investigates whether in frictional granular packings, like in Hamiltonian amorphous elastic solids, the stress autocorrelation matrix presents long range anisotropic contributions just as elastic Green's functions. We find that in a standard model of frictional granular packing this is not the case. We prove quite generally that mechanical balance and material isotropy constrain the stress auto-correlation matrix to be fully determined by two spatially isotropic functions: the pressure and torque auto-correlations. The pressure and torque fluctuations being respectively normal and hyperuniform force the stress autocorrelation to decay as the elastic Green's function. Since we find the torque fluctuations to be hyper-uniform, the culprit is the pressure whose fluctuations decay slower than normally as a function of the system's size. Investigating the reason for these abnormal pressure fluctuations we discover that anomalous correlations build up already during the compression of the dilute system before jamming. Once jammed these correlations remain frozen. Whether this is true for frictional matter in general or is it the consequence of the model properties is a question that must await experimental scrutiny and possible alternative models.
description: 9 Figures, 11 pages: Submitted to Physical Review B
Table 4: Pre-Late Cretaceous basement terranes of the Gondwana active margin of New Caledonia
Creators: name: P. Maurizot
name: D. Cluzel
name: S. Meffre
name: H.J. Campbell
name: J. Collot
name: B. Sevin
Publisher: name: Geological Society of London
Year: 2020
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Geochemistry data of the Boghen Terrane rocks.
Fast partial decoherence of a superconducting flux qubit in a spin bath
Creators: name: Dziarmaga, Jacek
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The superconducting flux qubit has two quantum states with opposite magnetic flux. Environment of nuclear spins can find out the direction of the magnetic flux after a decoherence time $τ_0$ inversely proportional to the magnitude of the flux and the square root of the number of spins. When the Hamiltonian of the qubit drives fast coherent Rabi oscillations between the states with opposite flux, then flux direction is flipped at a constant rate $ω$ and the decoherence time $τ=ωτ_0^2$ is much longer than $τ_0$. However, on closer inspection decoherence actually takes place on two timescales. The long time $τ$ is a time of full decoherence but a part of quantum coherence is lost already after the short time $τ_0$. This fast partial decoherence biases coherent flux oscillations towards the initial flux direction and it can affect performance of the superconducting devices as qubits.
description: 7 pages
Lattice Boltzmann for Binary Fluids with Suspended Colloids
Creators: name: Stratford, K.
name: Adhikari, R.
name: Pagonabarraga, I.
name: Desplat, J. -C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A new description of the binary fluid problem via the lattice Boltzmann method is presented which highlights the use of the moments in constructing two equilibrium distribution functions. This offers a number of benefits, including better isotropy, and a more natural route to the inclusion of multiple relaxation times for the binary fluid problem. In addition, the implementation of solid colloidal particles suspended in the binary mixture is addressed, which extends the solid-fluid boundary conditions for mass and momentum to include a single conserved compositional order parameter. A number of simple benchmark problems involving a single particle at or near a fluid-fluid interface are undertaken and show good agreement with available theoretical or numerical results.
description: 10 pages, 4 figures, ICMMES 2004
ACREAGE RESPONSE OF SUGARCANE TO PRICE AND NON PRICE FACTORS IN KHYBER PAKHTUNKHWA
Creators: name: Saddiq, Muhammad
name: Fayaz, Muhammad
name: Hussain, Zahid
name: Shahab, Muhammad
name: Ullah, Irfan
name: Saddiq, Muhammad
name: Fayaz, Muhammad
name: Hussain, Zahid
name: Shahab, Muhammad
name: Ullah, Irfan
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Crop Production/Industries
subject: Production Economics
subject: Productivity Analysis
subject: Acreage response
subject: Price and non-price factors
subject: Sugarcane
subject: Khyber Pakhtunkhwa

description: This study analyzed 42 years’ time series data from 1970-2011 for the acreage response of sugarcane to price and non-price factors in Khyber Pakhtunkhwa. Data was tested for major expected problems of time series i.e. Autocorrelation and Stationarity. For autocorrelation Durban h statistics was used and the value (0.539) indicates no serial Autocorrelation in the data set. While Augmented Dickey Fuller test was used for detection of Stationarity and the data was stationary at lag one. The study follows Nerlovian Partial Adjustment linear and non-linear models for acreage response. While Vector Auto Regression technique was used to estimate the effect of price and non-price factors on acreage allocation decisions of the farmers for sugarcane in the study area. The empirical results show that short run and long run elastisities are inelastic for all the variables and statistically significant at 5% significance level except average rainfall. Further, the influence of price, yield, and lag area are positive and significant in affecting acreage allocation decision. This means that if price, yield and lag area are enhanced, the acreage allocation of sugarcane might improve in-elastically. The relatively low values of coefficients obtained from the regression analysis indicates that sugarcane producers in making acreage allocation influenced more by their ideas of expected price than by previous year price. Similarly the magnitude of the linear and log coefficient of yield (0.676) and (0.208) suggesting that if rising trend in sugarcane yield persists it will help farmers’ expansion of sugarcane cultivation in future. Further, the relatively high value of the coefficients of lagged area (0.300) and (0.298) of sugarcane suggests that their area allocation adjust quickly for changes in expected profit. As the literature shows that mostly price is the main factors in shifting the area allocation of any crop while this paper shows that lag area was a main factor because the land of Khyber Pakhtukhwa is suitable for sugarcane production and mostly they produce Gurr from sugarcane which they used for self-consumption. . Improved technological innovations will boost the sugar-cane production. Hence, the Government should explore ways to make available the same to the farmers.
ATBRG: Adaptive Target-Behavior Relational Graph Network for Effective Recommendation
Creators: name: Feng, Yufei
name: Hu, Binbin
name: Lv, Fuyu
name: Liu, Qingwen
name: Zhang, Zhiqiang
name: Ou, Wenwu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Recommender system (RS) devotes to predicting user preference to a given item and has been widely deployed in most web-scale applications. Recently, knowledge graph (KG) attracts much attention in RS due to its abundant connective information. Existing methods either explore independent meta-paths for user-item pairs over KG, or employ graph neural network (GNN) on whole KG to produce representations for users and items separately. Despite effectiveness, the former type of methods fails to fully capture structural information implied in KG, while the latter ignores the mutual effect between target user and item during the embedding propagation. In this work, we propose a new framework named Adaptive Target-Behavior Relational Graph network (ATBRG for short) to effectively capture structural relations of target user-item pairs over KG. Specifically, to associate the given target item with user behaviors over KG, we propose the graph connect and graph prune techniques to construct adaptive target-behavior relational graph. To fully distill structural information from the sub-graph connected by rich relations in an end-to-end fashion, we elaborate on the model design of ATBRG, equipped with relation-aware extractor layer and representation activation layer. We perform extensive experiments on both industrial and benchmark datasets. Empirical results show that ATBRG consistently and significantly outperforms state-of-the-art methods. Moreover, ATBRG has also achieved a performance improvement of 5.1% on CTR metric after successful deployment in one popular recommendation scenario of Taobao APP.
description: Accepted by SIGIR 2020, full paper with 10 pages and 5 figures
Casos práticos de Gestão das Organizações II
Creators: name: Justino, Maria do Rosário
Publisher: name: Zenodo
Year: 2021

description: Para complementar o estudo da unidade curricular de gestão das Organizações II, decidiu-se compilar alguns casos práticos que permitam aos estudantes examinar contextos e analisar decisões ou decidir. Tal é possível através dos casos que permitem criar cenários, e permitir aos estudantes aplicar os conhecimentos teóricos adquiridos.

O estudante terá que aplicar os conhecimentos teóricos adquiridos e estes podem-se adaptar aos capítulos estudados. As questões no final de cada caso podem servir para trabalhos dos estudantes ou para discussão em aula. Além destes casos de estudo os alunos tem diversas atividades a elaborar em casa, ou em sala de aula, que serão especificadas a seguir.

Além dos casos de estudo, os estudantes terão a oportunidade de fazer trabalho de pesquisa, acerca do tema 3- Gestão Ambiental, justifica-se pelo facto de: A Comissão Europeia elaborou um conjunto de oito Documentos de Referência Setoriais (SRD) para diferentes setores de atividade económica (ver anexo), os quais permitem apoiar as organizações que pretendam melhorar o seu desempenho ambiental. Os SRD incluem i) as melhores práticas de gestão ambiental, ii) os aspetos e indicadores ambientais típicos, e iii) os benchmarks de excelência em cada setor. Assim, os SRD constituem guias úteis para qualquer organização que pretenda implementar e manter um Sistema de Gestão Ambiental (SGA) segundo o EMAS (Regulamento Comunitário de Ecogestão e Auditoria), a Norma ISO 14001:2015, ou outro referencial de implementação de SGA. Em particular, os SRD permitem apoiar as organizações na identificação de aspetos ambientais, estabelecimento de objetivos, metas e identificação das melhores práticas de gestão ambiental a considerar num SGA. Pretende-se que cada grupo de alunos selecione um Setor (opções disponíveis em anexo) e prepare uma apresentação em aula abordando: Os aspetos ambientais diretos e indiretos típicos do setor de atividade selecionado, incluindo uma visão integrada das principais atividades/produtos/serviços do setor, numa perspetiva de ciclo de vida.

 

 

SUMÁRIO:

Caso de estudo 1: Logoplaste

Caso de estudo 2: Continental

Caso de estudo 3: Mc Donalds

Caso de estudo 4: Pizas

Caso de estudo 5: Gestão Ambiental

Caso de estudo 6: Gestão do Conhecimento
Low-Rank Covariance Function Estimation for Multidimensional Functional Data
Creators: name: Wang, Jiayi
name: Wong, Raymond K. W.
name: Zhang, Xiaoke
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Multidimensional function data arise from many fields nowadays. The covariance function plays an important role in the analysis of such increasingly common data. In this paper, we propose a novel nonparametric covariance function estimation approach under the framework of reproducing kernel Hilbert spaces (RKHS) that can handle both sparse and dense functional data. We extend multilinear rank structures for (finite-dimensional) tensors to functions, which allow for flexible modeling of both covariance operators and marginal structures. The proposed framework can guarantee that the resulting estimator is automatically semi-positive definite, and can incorporate various spectral regularizations. The trace-norm regularization in particular can promote low ranks for both covariance operator and marginal structures. Despite the lack of a closed form, under mild assumptions, the proposed estimator can achieve unified theoretical results that hold for any relative magnitudes between the sample size and the number of observations per sample field, and the rate of convergence reveals the "phase-transition" phenomenon from sparse to dense functional data. Based on a new representer theorem, an ADMM algorithm is developed for the trace-norm regularization. The appealing numerical performance of the proposed estimator is demonstrated by a simulation study and the analysis of a dataset from the Argo project.
description: 25 pages, 4 figures
Searching for Decoherence-Free Subspaces in Cavity Quantum Electrodynamics
Creators: name: de Magalhães, A. R. Bosco
name: Nemes, M. C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We construct a model which describes a recently performed experiment (Phys. Rev. A 64, 050301(R) (2001)) in which an entangled state between two modes of a single cavity is built. Environmental effects are taken into account and the results agree with the experimental findings. Moreover the model predicts, for different conditions of the same experiment, a decoherence-free subspace. These conditions are analyzed and slightly different experiments suggested in order to test its viability.
description: 19 pages, 3 figures
Analysing AIA Flare Observations using Convolutional Neural Networks
Creators: name: Love, Teri
name: Neukirch, Thomas
name: Parnell, Clare E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In order to efficiently analyse the vast amount of data generated by solar space missions and ground-base instruments, modern machine learning techniques such as decision trees, support vector machines (SVMs) and neural networks can be very useful. In this paper we present initial results from using a convolutional neural network (CNN) to analyse observations from the Atmospheric Imaging Assembly (AIA) in the 1600A wavelength. The data is pre-processed to locate flaring regions where flare ribbons are visible in the observations. The CNN is created and trained to automatically analyse the shape and position of the flare ribbons, by identifying whether each image belongs into one of four classes: two-ribbon flare, compact/circular ribbon flare, limb flare or quiet Sun, with the final class acting as a control for any data included in the training or test sets where flaring regions are not present. The network created can classify flare ribbon observations into any of the four classes with a final accuracy of 94%. Initial results show that most of the images are correctly classified with the compact flare class being the only class where accuracy drops below 90% ad some observations are wrongly classified as belonging to the limb class.
description: 9 pages, 4 figures. To be published in Frontiers in Astronomy and Space Science as part of the Machine Learning in Heliophysics research topic
Dépôt des livres du fonds Francine Lancelot à la médiathèque de la Maison méditerranéenne des sciences de l'Homme (2003)
Creators: name: Cialone-Grégoire, Claire
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020

description: Source: http://www.calames.abes.fr/pub/ms/FileId-3413
Electron Spin Resonance of SrCu2(BO3)2 at High Magnetic Field
Creators: name: Shawish, S. El
name: Bonca, J.
name: Batista, C. D.
name: sega, I.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We calculate the electron spin resonance (ESR) spectra of the quasi-two-dimensional dimer spin liquid SrCu2(BO3)2 as a function of magnetic field B. Using the standard Lanczos method, we solve a Shastry-Sutherland Hamiltonian with additional Dzyaloshinsky-Moriya (DM) terms which are crucial to explain different qualitative aspects of the ESR spectra. In particular, a nearest-neighbor DM interaction with a non-zero D_z component is required to explain the low frequency ESR lines for B || c. This suggests that crystal symmetry is lowered at low temperatures due to a structural phase transition.
description: 4 pages, 4 b&w figures
title: E Mare Libertas : eine vertikale Siedlung auf hoher See : a vertical settlement at sea
Creators: name: Walzer, Alexander Nikolas
Publisher: name: TU Wien
Year: 2018
Subjects: subject: Architekturentwurf
subject: architectural design

description: E Mare Libertas: Während die Weltbevölkerung anwächst und sich die Städte üblicherweise in die umliegenden Gebiete ausdehnt, oder aufgrund statischer Infrastruktur zu hohe innerstädtische Dichten bildet, stellt sich die Frage welche Alternativen wir spätestens nach Erschöpfung der Landreserven haben. Das vorgeschlagene Projekt mit dem Titel „E Mare Libertas“ (Latein, zu deutsch etwa „Freiheit aus dem Meere“)* sieht ein Szenario einer vertikal verdichteten Siedlung im Hafen von Singapur vor, ein Staat der bereits 92% seiner bebaubaren Landflächen ausgenutzt hat und gezwungen ist künstliches Land neu aufzuschütten. Die Schaffung von Freiflächen auf dem Wasser, die Idee der energetischen Selbstversorgung, ein modulares Konstruktionssystem und die Einbeziehung von Privatsphäre stellen gestalterische Herausforderungen dar, die sich im Spannungsfeld von Dichte und Freiheit sehr extrem ausdrücken. Mit dieser Arbeit versucht der Autor die Problematik der demografischen Zukunft im städtebaulichen Maßstab aufzuzeigen und in einen Lösungsvorschlag für die Bebauung der restlichen 70% der Weltoberfläche einzubetten. * „E Mare Libertas“ ist das nationale Motto und der Name der Nationalhymne der Mikronation Sealand in der Nordsee auf einer ehemaligen Seefestung vor der Küste Großbritanniens.
description: E Mare Libertas: As the world population grows and cities usually expand into the surrounding areas, or because of static infrastructure form way too high urban densities, the question arises what alternatives we have at the latest after exhaustion of land reserves. The proposed project entitled „E Mare Libertas“ (Latin, for „Freedom from the Sea“)** provides a scenario of a vertically packed settlement in the port of Singapore, a state that has already exploited 92% of its building land and that is forced to create new land artificially. The creation of open spaces on the water, the idea of energetic self-sufficiency, a modular construction system and the inclusion of privacy represent design challenges that are playing extremely with the tension between density and freedom. With this work, the author tries to point out the problem of our demographic future on an urban scale and to embed it in a proposal for the development of the remaining 70% of the world surface. ** „E Mare Libertas“ is the national motto and the name of the national anthem of the Micronation Sealand in the North Sea, on a former naval fort off the coast of Great Britain.
INTENSYWNOŚĆ NAKŁADÓW NA CHEMICZNĄ OCHRONĘ ROŚLIN W GOSPODARSTWIE INDYWIDUALNYM
Creators: name: Golinowska, Maria
name: Wiciak, Tomasz
name: Kruszyński, Michał
name: Adamska, Hanna
name: Golinowska, Maria
name: Wiciak, Tomasz
name: Kruszyński, Michał
name: Adamska, Hanna
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: expenditure on plant protection
subject: treatments multiplicity
subject: pesticide usage
subject: profitability of plant protection treatments

description: The research was conducted in the individual farm located in Opolskie Province. The purpose of investigation was the analysis of intensity of expenditure on chemical plant protection in cultivation of winter wheat, seed rape, sugar beet and potatoes. The expenditure on plant protection was expressed by pesticides usage in 1kg of active substance per 1 ha, the value PLN, treatments multiplicity and the costs of chemical treatments performance. The profitability was determined using guide profitability indices. Ten year analysis proved that since 2004 year the expenditure on plant protection had been increasing in each particular cultivation and its profitability had been getting worse despite the increased prices of the protected product and the yield obtained.
Time-Space Noncommutativity: Quantised Evolutions
Creators: name: Balachandran, A. P.
name: Govindarajan, T. R.
name: Martins, A. G.
name: Teotonio-Sobrinho, P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In previous work, we developed quantum physics on the Moyal plane with time-space noncommutativity, basing ourselves on the work of Doplicher et al.. Here we extend it to certain noncommutative versions of the cylinder, $\mathbb{R}^{3}$ and $\mathbb{R}\times S^{3}$. In all these models, only discrete time translations are possible, a result known before in the first two cases. One striking consequence of quantised time translations is that even though a time independent Hamiltonian is an observable, in scattering processes, it is conserved only modulo $\frac{2π}θ$, where $θ$ is the noncommutative parameter. (In contrast, on a one-dimensional periodic lattice of lattice spacing $a$ and length $L=Na$, only momentum mod $\frac{2π}{L}$ is observable (and can be conserved).) Suggestions for further study of this effect are made. Scattering theory is formulated and an approach to quantum field theory is outlined.
description: 25 pages, LaTex; minor corrections, references corrected
A $j_\mathrm{eff} = 1/2$ pseudospinon continuum in CaIrO$_3$
Creators: name: Rossi, Matteo
name: Marabotti, Pietro
name: Hirata, Yasuyuki
name: Monaco, Giulio
name: Krisch, Michael
name: Ohgushi, Kenya
name: Wohlfeld, Krzysztof
name: Brink, Jeroen van den
name: Sala, Marco Moretti
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In so-called $j_\mathrm{eff} = 1/2$ systems, including some iridates and ruthenates, the coherent superposition of $t_\mathrm{2g}$ orbitals in the ground state gives rise to hopping processes that strongly depend on the bond geometry. Resonant inelastic x-ray scattering (RIXS) measurements on CaIrO$_3$ reveal a prototypical $j_\mathrm{eff} = 1/2$ pseudospinon continuum, a hallmark of one-dimensional (1D) magnetic systems despite its three-dimensional crystal structure. The experimental spectra compare very well to the calculated magnetic dynamical structure factor of weakly coupled spin-1/2 chains. We attribute the onset of such quasi-1D magnetism to the fundamental difference in the magnetic interactions between the $j_\mathrm{eff} = 1/2$ pseudospins along the corner- and edge-sharing bonds in CaIrO$_3$.
description: 8 pages, 4 figures
Syntheses, structures, and immobilization of ruthenium(II) complexes with alkoxysilane groups functionalized N,N′-diamine and phosphine ligands
Creators: name: Ji, Jiao
name: Li-Miao Shi
name: Fule Wu
name: Xin, Zhi-Feng
name: Ai-Quan Jia
name: Zhang, Qian-Feng
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Treatment of [RuCl2(PPh3)3] with N-(β-aminoethyl)-γ-aminopropylmethylbimethoxysilane (L1) in tetrahydrofuran at room temperature gave a mononuclear ruthenium(II) complex [Ru(PPh3)2Cl2 (κ2-N,N-L1)] (1). Condensation of γ-aminopropyltriethoxysilane and potassium diphenylphosphine in the molar ratio of 1:1 in tetrahydrofuran afforded phosphine (PPh2)(CH2)3Si(OEt)3 (L2) with ethoxysilane groups. Reaction of [Ru(η6-p-cymene)Cl2]2 with L2 in refluxing tetrahydrofuran afforded a ruthenium(II) phosphine complex [Ru(η6-p-cymene)Cl2(κ-P-L2)] (2). Complexes 1 and 2 were systematically characterized by microanalyses, FT-IR, and NMR spectroscopies. Their structures have been unambiguously established by single-crystal X-ray diffraction. Immobilization of 1 and 2 on SBA-15 and characterization of these hybrid heterogeneous catalysts were studied by transmission electron microscopy (TEM), FT-IR, and low-pressure N2 adsorption/desorption measurements. Transfer hydrogenation of acetophenone was also briefly investigated with the heterogeneous catalysts.
REGIONALNE ZRÓŻNICOWANIE UPRAW OGRODNICZYCH W POLSCE
Creators: name: Gunerka, Lidia
name: Jabłońska, Lilianna
name: Sobczak, Wioleta
name: Gunerka, Lidia
name: Jabłońska, Lilianna
name: Sobczak, Wioleta
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: agrarian structure
subject: agriculture
subject: horticulture

description: The changes in the horticultural crops area in Poland, as well as in a number of horticultural farms in whole country and individual provinces have been analysed, detailing horticulture sectors (orchards, vegetables, crops under cover). Particular emphasis was placed on the changes in the average size of crop area in one farm as an indicator of horticulture development. The analysis show that the Polish horticulture is still diversity by region and production is fragmentation, although eight years improved crop area structure.
title: Synapsis : eine Stadtvision für Wien : a city vision for Vienna
Creators: name: Karic, Alen
Publisher: name: TU Wien
Year: 2018
Subjects: subject: Architekturentwurf
subject: architectural design

description: Synapsis: Eine Stadtvision für Wien Bei gleichbleibender baulicher Dichte wird ein Quadratkilometer des 2. Wiener Gemeindebezirkes durch eine neue Stadtform ersetzt. Dabei soll Stadt neu interpretiert werden und zukunftsweisende Möglichkeiten aufzeigen. Die neue Stadtstruktur weist im Gegensatz zu der für Wien typischen Blockrandbebauung wesentliche Verbesserungen in Hinblick auf Belichtungsverhältnisse und Lebensqualität auf. Eine durchgehende begrünte Landschaftsebene soll gänzlich für Fußgänger und Radfahrer reserviert sein. Der motorisierte Individualverkehr soll dabei nur auf den Dächern stattfinden und vermeidet dadurch unattraktive Einschnitte in die Landschaft sowie Lärmbelästigungen. Die so geschaffene Bebauungsform erinnert schlussendlich an Synapsen, die sich über die Landschaft vernetzen, wodurch dieses Projekt den Titel „Synapsis“ zugesprochen bekommt.
description: Synapsis: a city vision for Vienna With equal density, one square kilometer of Vienna‘s 2nd district will be replaced by a new city form. In doing so, „city“ should be interpreted in a new way and should also show forward-looking possibilities. Compared to the typical Viennese block perimeter development, the new city structure mainly improves exposure conditions and the quality of life in general. A continuous green landscape level should be reserved for pedestrians and cyclists. The motorized individual traffic should be located only on the roofs and avoid unattractive cuts through the landscape and noise pollution. The city form created in this way finally reminds on synapses, which are distributed over the landscape, which gives this project the title „Synapsis“.
POTENCJAŁ AGROEKOLOGICZNY ROLNICTWA WOJEWÓDZTWA LUBELSKIEGO
Creators: name: Harasim, Adam
name: Harasim, Adam
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: agriculture
subject: agro-ecological indicators
subject: Lublin province
subject: districts

description: In the study, the agro-ecological potential of agriculture in the province of Lublin was evaluated at a district level. As it utilizes ca. 60% of the total area of the district, agriculture in Poland, along with its production function, also bears responsibility for the conservation of environmental resources. Hence the assessment of its potential should include the environment-related aspect. The study showed that within the province of Lublin the district of Hrubieszów stood out for its high agro-ecological potential whereas the lowest agro-ecological potential was found in the district of Biała. Agro-ecological potential depends mainly on the quality of the agricultural productive space and on the agro-chemical condition of the soil.
An X-ray view of WLRGs/LINERs
Creators: name: Rinn, Alexander S.
name: Sambruna, Rita M.
name: Gliozzi, Mario
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present X-ray observations of nine Weak-Line Radio Galaxies (WLRGs), optically classified as confirmed or possible Low Ionization Nuclear Emission-line Regions (LINERs). The data were taken from the Chandra, XMM, and BeppoSax archives. The Chandra images typically show complex X-ray morphologies, with hard (2-10 keV) point sources embedded in diffuse soft (0.3-2.0 keV) emission in all cases except 1246-41 (NGC 4696), where only diffuse emission is detected on the scale of the cluster, and 0334-01 (3C 15), where only a point source is detected. The nuclear X-ray spectra are well fitted at hard energies by an absorbed powerlaw, with a wide range of photon indices, Gamma=1.5-2.7. Excess absorption over the Galactic value is detected in 6/9 sources, with column densities NH approximately 10^21-22 cm^-2. A thermal component is required at softer energies, in agreement with the results of the spatial analysis. We find that there is no correlation between the core X-ray luminosity and the radio core dominance parameter, suggesting that the bulk of the core X-ray emission is not beamed, but rather is isotropic and thus likely related to the accretion flow. In an attempt to constrain the nature of the accretion flow, we calculate the ratios of bolometric to Eddington luminosities L_bol/L_Edd, and the radiative efficiency eta based on the Bondi accretion rates. We find that L_bol/L_Edd ~10^-4 - 10^-6 and eta ~10^-2 - 10^-6 for all the objects in our sample, suggesting radiatively inefficient accretion flows.
description: 23 pages, 3 figures, accepted for publication in ApJ
POTENCJAŁ ENERGETYCZNY BIOMASY ROLNICZEJ W ASPEKCIE REALIZACJI PRZEZ POLSKĘ NARODOWEGO CELU WSKAŹNIKOWEGO OZE I DYREKTYW UE W 2020 ROKU
Creators: name: Jasiulewicz, Michał
name: Jasiulewicz, Michał
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: agri biomass
subject: regional potential
subject: energetic dispersion
subject: National Aim Index RES-2020

description: Regional development programs according to National Strategy for Regional Development 2010-2020 heading to rising competitive on the basis internal potential of biomass – it’s the matter in the paper. There are show the utilization of the biomass from the agriculture to the energetic aims. In the paper there are the potential of biomass – it is liquid biomass – bioethanol and biodiesel according to National Objectives for 2020 and the potential possibility from the digestigatin from agriculture. The potential of the solid biomass, too – particulary. The waste from the agriculture (mey, straws, orchards), and potential plantation of the energetic plants (willow, poplar, Miscantus). The solid biomass should be use to the CHP process (Combinet Heat and Power) in dispersion system in little and middle power station. Poland is the country in which the potential of biomass is high (895 PJ).
ZNACZENIE REBRANDIGU W KREOWANIU WIZERUNKU MARKI
Creators: name: Jaska, Ewa
name: Jaska, Ewa
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: brand
subject: rebranding
subject: the retail chain „Biedronka” (“Ladybug”)
subject: image

description: This paper presents the complexity of the process of rebranding and its impact on the creation of brand image, and indirectly on stimulating the demand for the company’s offer. Rebranding does not only involve the changes in the system of visual identification, but also other image changes, integrated with the company’s business strategy. The chosen example is the retail chain “Biedronka” („Ladybug”), which in 2012 started the implementation of the rebranding process. To explore the effects of the implemented changes a survey was carried out and source materials provided by the company reviewed. The customers highly rated the changes implemented in “Biedronka” retail chain shops and the company reported significant increases in sales in the first quarter of 2013.
KONSUMENCKA PERCEPCJA INNOWACJI A KONKURENCYJNOŚĆ PRZEMYSŁU SPOŻYWCZEGO
Creators: name: Jeżewska-Zychowicz, Marzena
name: Jeżewska-Zychowicz, Marzena
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: innovative food
subject: consumer
subject: consumer perception
subject: food industry
subject: competitiveness

description: The aim of the study was to determine consumer perceptions of selected food products enriched with bioactive components. The intention of eating them, the benefits and risks associated with their consumption were taken into consideration. A survey was carried out in 2011 in a national sample of 1000 respondents. It has been found relatively little intention to purchase these products, but the slightly larger intention was expressed to the probiotic yoghurt and fruit juice enriched in fibre. Opinions about the benefits and risks were similar for all products. The respondents indicated rather small benefits , but also rather small risks from the consumption of these products. Greater importance for the declaration of the intention to eat had opinions about the benefits than risks. Age and place of residence differentiated the opinions of the intention of eating, risks and benefits more than the other socio-demographic characteristics. Opinions about the benefits and risks showed relatively high similarity for all products, while the diversity of opinions concerning specific products enriched in bioactive components were observed according to individuals’ characteristics.
Extended Molecular Gas in the Nearby Starburst Galaxy Maffei 2
Creators: name: Mason, A. M.
name: Wilson, C. D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a 9'x9' fully-sampled map of the CO J=1-0 emission in the nearby starburst galaxy Maffei 2 obtained at the Five College Radio Astronomy Observatory. The map reveals previously known strong CO emission in the central starburst region as well as an extended asymmetric distribution with bright CO lines at the ends of the bar and in a feature at the north-east edge of the molecular disk. This northern feature, proposed previously to be an interacting companion galaxy, could be a dwarf irregular galaxy, although the CO data are also consistent with the feature being simply an extension of one of the spiral arms. We estimate the total molecular gas mass of Maffei 2 to be (1.4-1.7)x10^9 Mo or ~3-4% of its dynamical mass. Adopting the recently determined lower value for the CO-to-H2 conversion factor in the central region, our data lead to the surprising result that the largest concentrations of molecular gas in Maffei 2 lie at the bar ends and in the putative dwarf companion rather than in the central starburst. A gravitational stability analysis reveals that the extended disk of Maffei 2 lies above the critical density for star formation; however, whether the central region is also gravitationally unstable depends both on the details of the rotation curve and the precise value of the CO-to-H2 conversion factor in this region.
description: accepted to ApJ (Sept 10 2004 issue)
ZASOBY I NAKŁADY PRACY W ROLNICTWIE POLSKIM
Creators: name: Kapusta, Franciszek
name: Kapusta, Franciszek
Publisher: name: Unknown
Year: 2014
Subjects: Agribusiness

description: Labour resources used express and applicable in the production size of the workforce. An indicator of the labor force is the number of people working in the natural or full-time workers per 100 ha of arable land. However, the amount of work, it is actually spent working, recently expressed in annual work units ( AWU ) per 100 ha of arable land. Resources and effort are varied in individual farms and corporate farms. As the area of farms declining resources and labor for 100 ha of arable land, while increasing productivity. It is a paradox that the holdings in area larger gain maximum productivity and minimum labor involved, and in the smallest farms vice versa. In addition, labor resources are differentiated in terms of working age, work experience in agriculture, education, gender, and the nature of work (work index, extra, family, employee). In 2010, the amount of work in the AWU per 100 ha of agricultural land in individual farms amounted to 14.5, including 13.3 on farms than 1 ha and 79.9 to 1 hectare, compared to 3.2 AWU in corporate farms.
MPEC 2024-C113 : 2024 CC2
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 CC2

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
High-contrast imaging of 180° ferroelectric domains by optical microscopy using ferroelectric liquid crystals
Creators: name: Nataf, Guillaume. F.
name: Guennou, Mael
name: Scalia, Giusy
name: Moya, Xavier
name: Wilkinson, Tim D.
name: Lagerwall, Jan P. F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ferroelectric liquid crystals (FLCs) couple the direction of their spontaneous electric polarization to the direction of tilt of their optic axis. Consequently, reversal of the electric polarization by an electric field gives rise to an immediate and lasting optical response when an appropriately aligned FLC is observed between crossed polarizers, with one field direction yielding a dark image, and the opposite direction yielding a bright image. Here this peculiar electro-optic response is used to image, with high optical contrast, 180° ferroelectric domains in a crystalline substrate of magnesium-doped lithium niobate. The lithium niobate substrate contains a few domains with upwards electric polarization surrounded by regions with downward electric polarization. In contrast to a reference non-chiral liquid crystal that is unable to show ferroelectric behavior due to its high symmetry, the FLC, which is used as a thin film confined between the lithium niobate substrate and an inert aligning substrate, reveals ferroelectric domains as well as their boundaries, with strong black and white contrast. The results show that FLCs can be used for non-destructive read-out of domains in underlying ferroelectrics, with potential applications in e.g. photonic devices and non-volatile ferroelectric memories.
description: 12 pages, 3 figures
Characterisation, activity tests, optimisation of reaction conditions from Optimization of sol-immobilized bimetallic Au–Pd/TiO catalysts: reduction of 4-nitrophenol to 4-aminophenol for wastewater remediation
Creators: name: Alshammari, Khaled
name: Yubiao Niu
name: Palmer, Richard E.
name: Dimitratos, Nikolaos
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: 30203 Inorganic Green Chemistry
subject: FOS: Chemical sciences
subject: 30504 Organic Green Chemistry
subject: 100799 Nanotechnology not elsewhere classified
subject: FOS: Nanotechnology

description: A sol-immobilization method is used to synthesize a series of highly active and stable AuxPd1−x/TiO2 catalysts (where x = 0, 0.13, 0.25, 0.5, 0.75, 0.87 and 1) for wastewater remediation. The catalytic performance of the materials was evaluated for the catalytic reduction of 4-nitrophenol, a model wastewater contaminant, using NaBH4 as the reducing agent under mild reaction conditions. Reaction parameters such as, substrate/metal and substrate/reducing agent molar ratios, reaction temperature and stirring rate were investigated. Structure-activity correlations were studied using a number of complementary techniques including X-ray powder diffraction, X-ray photoelectron spectroscopy and transmission electron microscopy. The sol-immobilization route provides very small Au–Pd alloyed nanoparticles, with the highest catalytic performance shown by the Au0.5Pd0.5/TiO2 catalyst.This article is part of the discussion meeting issue ‘Science to Enable the Circular Economy’.
Loops in Twistor Space
Creators: name: Bena, Iosif
name: Bern, Zvi
name: Kosower, David A.
name: Roiban, Radu
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We elucidate the one-loop twistor-space structure corresponding to momentum-space MHV diagrams. We also discuss the infrared divergences, and argue that only a limited set of MHV diagrams contain them. We show how to introduce a twistor-space regulator corresponding to dimensional regularization for the infrared-divergent diagrams. We also evaluate explicitly the `holomorphic anomaly' pointed out by Cachazo, Svrcek, and Witten, and use the result to define modified differential operators which can be used to probe the twistor-space structure of one-loop amplitudes.
description: 21 pages, TeX. v3. missing citations added. v4. subtlety with the i \epsilon prescription clarified
Analysis of Human Exposure to Electromagnetic Fields in 5G Uplink and Downlink
Creators: name: Kim, Seungmo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Concern has been widely acknowledged about human health---e.g., heating of the eyes and skin--from exposure to electromagnetic fields (EMF) produced by wireless transmitters. Mobile telecommunications rely on an extensive network of base stations (BSs) and handheld devices that transmit signals via EMF. There is chance of aggravation due to two important changes that will be seen in future cellular networks. First, the number of BSs will remarkably grow with the proliferation of small-cell networks, which will expose humans to EMF more often. Second, highly concentrated EMF beams will be generated by employing larger antenna arrays to overcome faster EMF energy attenuation in higher-frequency bands such as millimeter wave (mmW) spectrum, which will increase damage if the main beam points to the human body. However, the two changes can be exploited as leverages for (i) wider selection of alternative BSs and (ii) more precise beamforming to a desired user equipment (UE) with less EMF leakage to other directions, respectively. Harnessing the two changes, we have been investigating the human health impacts of 5G wireless systems. This extended abstract summarizes our findings thus far.