cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
ESTUDO EXPLORATÓRIO SOBRE OS GANHOS E DIFICULDADES COLETIVAS À EXPORTAÇÃO DAS EMPRESAS METAL- MECÂNICAS DO ARRANJO PRODUTIVO LOCAL DO ÁLCOOL
An Exploratory Study on the Gains and Problems Faced by the Metal-Mechanic Companies of the Alcohol Cluster When Dealing With Export
Creators: name: Camozzi, Fabio
name: Sacomano Neto, Mário
name: De Camargo, Sílvia Helena Carvalho Ramos Valladão
name: Camozzi, Fabio
name: Sacomano Neto, Mário
name: De Camargo, Sílvia Helena Carvalho Ramos Valladão
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: International Relations/Trade
subject: Local productive arrangement of alcohol
subject: collective gains
subject: export
subject: metal-mechanical firms
subject: Arranjo produtivo local do álcool
subject: ganhos coletivos
subject: exportação
subject: empresas metais-mecânicas

description: Objetivou-se, no presente artigo, analisar os ganhos e dificuldades coletivas à exportação de empresas fornecedoras do setor sucroalcooleiro. As empresas são participantes do Arranjo Produtivo Local do Álcool (APLA) e parceiras da Agência Brasileira de Promoção de Exportações e Investimentos (ApexBrasil) para estímulo à exportação de seus produtos e serviços. A metodologia da pesquisa é descritiva, exploratória e qualitativa realizada através de estudos de multicasos. A coleta de dados foi realizada através de entrevistas in loco com 08 empresas fornecedoras de máquinas/ equipamentos para a cadeia produtiva de açúcar e álcool e participantes das rodadas de negócios internacionais, elaboradas pela parceira APLA/APEX. Nos resultados encontrados, os ganhos coletivos mais evidentes dessas empresas estão associados ao aumento de contatos comerciais em nível internacional; acesso a novos mercados; e aumento na venda de seus produtos e serviços. O artigo contribui para o entendimento dos limites e potencialidades associadas aos ganhos coletivos em arranjos produtivos locais. ----- The objective of this paper is to analyze the gains and collective difficulties to the export of supplying companies of the ethanol producing sector. The companies are participants of a cluster called Arranjo Produtivo Local do Álcool - Local Productive Arrangement Alcohol - (APLA) and partners of the Agência Brasileira de Promoção de Exportações e Investimentos - Brazilian Export and Investment Promotion - (ApexBrasil), in order to stimulate the export of their products and services. The methodology of this research is descriptive, exploratory and qualitative, performed through multi-case studies. The data collection was performed through in loco interviews with 08 supplying companies of machinery and equipment for the sugar and alcohol productive chain and participants of international business rounds by the APLA/APEX. The results reveal that these companies’ most evident collective gains are related to the increase of commercial contracts at the international level; access to new markets; and an increase in selling their products and services. The article contributed in understanding the limits and potentialities associated to the collective gains in local productive arrangements.
Plagiarism in theses: A nationwide concern from the perspective of university instructors
Creators: name: Farahian, Majid
Publisher: name: figshare
Year: 2020
Subjects: subject: 130103 Higher Education
subject: FOS: Educational sciences
subject: Sociology
subject: FOS: Sociology

description: Since the advent of the Internet, university stu-dents have had access to countless books andarticles which had been a great asset for bothstudents and research communities around theworld. However, due to various factors, plagiarismwhich means, according to Cambridge Dictionary,using another person’s ideas or work and pre-tending that it is your own has been a widespreadproblem in academic writing since then. In thisregard, many scholars in many different countriesinvestigated the reasons for student plagiarismusing self-report surveys and interviews. However,in recent years, the importance of studyingfaculty members’ perceptions in terms of thecontributing factors to plagiarism has becomemore evident. In the present study, we consid-ered instructors’ viewpoints in order to gain moreinsights into the misconduct in Iranian universi-ties. We believe our findings might help to tackleplagiarism more effectively as we took the ideasof the instructors into consideration.
Quantum Phase Transition of Spin-2 Cold Bosons in an Optical Lattice
Creators: name: Hou, Jing-Min
name: Ge, Mo-Lin
Publisher: name: arXiv
Year: 2003
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The Bose-Hubbard Hamiltonian of spin-2 cold bosons with repulsive interaction in an optical lattice is proposed. After neglecting the hopping term, the site-independent Hamiltonian and its energy eigenvalues and eigenstates are obtained. We consider the hopping term as a perturbation to do the calculations in second order and draw the phase diagrams for different cases. The phase diagrams show that there is a phase transition from Mott insulator with integer number bosons to superfluid when the ratio $c_0/t$ ($c_0$ is the spin-independent on-site interaction and $t$ the hopping matrix element between adjacent lattice sites) is decreased to a critical value and that there is different phase boundary between superfluid and Mott insulator phase for different Zeeman level component in some ground states. We find that the position of phase boundary for different Zeeman level component is related to its average population in the Mott ground state.
description: 16 pages, 6 figures
IMPACTO DAS INFORMAÇÕES NUTRICIONAIS NO COMPORTAMENTO DO CONSUMIDOR DE RESTAURANTES
Impact of Nutritional Information in the Behavior of Restaurant Consumers
Creators: name: Lima-Filho, Dario De Oliveira
name: Watanabe, Eluiza Alberto De Morais
name: De Oliveira, Leidy Diana De Souza
name: De Oliveira E Silva, Filipe Quevedo Pires
name: Lima-Filho, Dario De Oliveira
name: Watanabe, Eluiza Alberto De Morais
name: De Oliveira, Leidy Diana De Souza
name: De Oliveira E Silva, Filipe Quevedo Pires
Publisher: name: Unknown
Year: 2014
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Risk and Uncertainty
subject: Comportamento do consumidor
subject: assimetria de informações
subject: serviços de alimentação
subject: Consumer behavior
subject: asymmetric information
subject: food service

description: Na existência de informações imperfeitas, as condições de análise da qualidade dos produtos são prejudicadas. Portanto, a compra de alimentos traz consigo certo nível de risco associado, o qual pode ser reduzido com o aumento da quantidade e da qualidade das informações. Objetivou-se, neste estudo, analisar o comportamento do consumidor de restaurantes em relação à informações nutricionais dos alimentos em Campo Grande/MS. Foram entrevistadas 411 pessoas em Campo Grande/MS. A técnica de análise de dados utilizada foi distribuição de frequência, cruzamento de dados e estudo de cluster. O estudo de cluster indicou que entre as classes econômicas A, B e C não houve diferenças significativas no comportamento do consumidor com relação às informações nutricionais, porém, a classe D preocupa-se menos com a disponibilidade dessas informações e com a saudabilidade da alimentação. Nesse sentido, podemos concluir que esse fenômeno está acontecendo na sociedade como um todo, perdendo força somente nas classes sociais mais baixas. ----- When in the presence of imperfect information, the conditions for quality analysis of the products are impaired. Therefore, food purchase brings a certain level of risk associated, which may be reduced by increasing amount and quality of the information. In this sense, this study aims at analyzing the behavior of restaurant consumers in regard to the nutritional information of the food, by interviewing 411 people in Campo Grande, MG, Brazil. The data analysis technique used was frequency distribution, datacross and cluster analysis. The cluster analysis showed that, between economic classes A, B and C, thare were no significant differences in the behavior of the consumer regarding nutrition information. However, class D is less concerned with the availability of this information and the healthiness of the food. With these results, we may conclude that this phenomenon is happening in society as a whole, weakening only in the lower social classes.
Implications of extra dimensions on the effective charge and the beta function in quantum electrodynamics
Creators: name: Martínez-Pascual, E.
name: Nápoles-Cañedo, G.
name: Novales-Sánchez, H.
name: Sierra-Martínez, A.
name: Toscano, J. J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A comprehensive analysis on the photon self-energy, the fermion self-energy, and the fermion vertex function is presented at one loop in the context of quantum electrodynamics (QED) with 1 extra dimension. In 5-dimensional theories, characterized by an infinite number of Kaluza-Klein fields, one-loop amplitudes involve discrete as well as continuous sums, $\sum^\infty_{n=1}\int d^4k$, that could diverge. Using dimensional regularization, we express such sums as products of gamma and Epstein functions, both defined on the complex plane, with divergences arising from poles of these functions in the limit as $ D \to 4$. Using the analytical properties of the Epstein function, we show that the ultraviolet divergences generated by the Kaluza-Klein sums can be consistently renormalized, which means that the corresponding renormalized quantities reduce to the usual ones of QED at the limit of a very large compactification scale $R^{-1}$. The main features of QED at the one-loop level were studied. We use the mass-dependent $μ$-scheme to calculate, in QED with an arbitrary number $n$ of extra dimensions, a beta function fulfilling all desirable physical requirements. We argue that in this type of theories, with a large mass spectrum covering a wide energy range, beta functions should not be calculated by using mass-independent renormalization schemes. We show that the beta function is finite for any energy $μ$. In particular, it reduces to the usual QED result $e^3/12π^2$ for $m\ll μ\ll R^{-1}$ and vanishes for $m\gg μ$, with $m$ the usual fermion mass. Throughout the work, the decoupling nature of all our results obtained from the analytical properties of the Epstein function is stressed.
description: Accepted for publication in Physical Review D, 24 pages, 6 figures
D1.3 Framework for integration of ES mapping and assessment in spatial planning decisions
Creators: name: Laporta, Lia
name: Orta Ortiz, Maria Susana
name: Geneletti, Davide
Publisher: name: Zenodo
Year: 2023

description: This deliverable explores how to mainstream biodiversity values into an Ecosystem Services (ES) based assessment framework designed to support spatial planning solutions that can contribute to transformative change. To achieve this highly ambitious goal, we have started by reviewing existing frameworks such as the IPBES framework for nature’s value assessment, and the MAES operational framework for assessing ES in planning and policy contexts. Through this review we acknowledge the importance of applying a plural value lens to decision-making, particularly by reflecting the diversity of values of nature (intrinsic, instrumental, and relational) in the array of ES selected to be assessed (which will help decide the coverage and level of engagement required for the ES assessment), as well as defining the purpose of the ES assessmentin the context of decision-making (which will help determine the depth and accuracy required for the ES assessment). We also review previous work produced within the BioValue Project, particularly D4.1 and D1.1, as well as relevant literature, to understand how ES assessments can contribute to transformative change. From our findings we propose an ES-based assessment framework (which we refer to as T1.3 Framework) with five stages: Scoping, Mapping Ecosystems, Assessing ES, Results Integration, and Uptake of Outcomes. We present an overview of the Framework while discussing possible methods that can be applied in each stage. The T1.3 Framework links back to the ambitions for transformative change previously defined in Task 4.1 (based on Wittmer et al., 2021). We also bring forward a set of features (which we refer to as PIECES of a transformative assessment) to guide the selection of methods and interactions to be proposed under the T1.3 Framework towards a more transformative outcome. The T1.3 Framework will be subsequently discussed with each Arena for Transformation and, through its implementation in different contexts, it will be revised, adapted and tested for its transformative potential within the goal of BioValue.
The Importance of Being Majorana: Neutrinos versus Charged Fermions in Flavor Models
Creators: name: Nir, Yosef
name: Shadmi, Yael
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We argue that neutrino flavor parameters may exhibit features that are very different from those of quarks and charged leptons. Specifically, within the Froggatt-Nielsen (FN) framework, charged fermion parameters depend on the ratio between two scales, while for neutrinos a third scale--that of lepton number breaking--is involved. Consequently, the selection rules for neutrinos may be different. In particular, if the scale of lepton number breaking is similar to the scale of horizontal symmetry breaking, neutrinos may become flavor-blind even if they carry different horizontal charges. This provides an attractive mechanism for neutrino flavor anarchy.
description: 4 pages, revtex4
ESTRUTURAS DE GOVERNANÇA E CAPACIDADE DE RESPOSTA ÀS LEIS AMBIENTAIS: UM ESTUDO EM DESTILARIAS NO ESTADO DO PARANÁ
Governance structures and response conditions to environmental laws: a case study in distilleries of Paraná State
Creators: name: Augusto, Cleicieli Albuquerque
name: De Souza, José Paulo
name: Cario, Sílvio Antonio Ferraz
name: Augusto, Cleicieli Albuquerque
name: De Souza, José Paulo
name: Cario, Sílvio Antonio Ferraz
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: Institutional and Behavioral Economics
subject: Destilarias paranaenses
subject: estruturas de governança
subject: capacidade de resposta
subject: leis ambientais
subject: Paraná distilleries
subject: governance structures
subject: response capacity
subject: environmental laws

description: Objetivou-se, neste artigo, compreender, sob amparo teórico da Nova Economia Institucional, como as estruturas de governança podem afetar a condição de resposta às leis ambientais, nas relações entre produtores e processadores, em destilarias paranaenses. Para tanto, realizou-se uma pesquisa qualitativa, descritiva e de corte transversal, com perspectiva longitudinal. Os dados foram coletados por meio de entrevistas semiestruturadas com gerentes agrícolas e fornecedores mais antigos de cinco, das sete destilarias presentes no estado do Paraná. Os resultados indicaram que, além da integração vertical, a estrutura de governança na forma híbrida, representada pelo contrato de parceria do tipo arrendamento, apresenta-se como a mais adequada para o atendimento às leis ambientais, devido ao controle total obtido sobre o processo produtivo. As estruturas híbridas, envolvendo os contratos de parceria agrícola e fornecimento, apresentam baixa velocidade de resposta, por não possibilitarem controle total dos ativos e exigirem uma maior coordenação da relação da destilaria com seus contratados. ----- In this work, we aimed to understand, under theoretical umbrella of the New Institutional Economics, the way how the governance structures can affect the response condition to environmental laws in the relations between producers and processors in Paraná distilleries. Thus, we performed a qualitative, descriptive and cross-sectional research, with longitudinal perspective. Data were collected by means of unstructured interviews to agricultural managers and to the oldest suppliers of five of seven distilleries of the State of Paraná. According to results, besides vertical integration, the governance structure in the hybrid form, represented by the contract of partnership-type lease, was found to be the most suitable for attending the environmental laws, due to total control obtained under the productive process. The hybrid structures involving the agricultural and supplying partnership contracts, showed low response speed, by not making possible the total control of assets and by requiring higher coordination of the relation among distillery with its working partners.
title: Оборудование и технология печати. Листовые офсетные печатные машины
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2017

description: Учебное издание соответствует содержанию дисциплины Б1.В.ОД.15 Оборудование и технология печати направления подготовки 15.03.02 Технологические машины и оборудование профиль Полиграфические машины и автоматизированные комплексы.
Intermittent sliding locomotion of a two-link body
Creators: name: Alben, Silas
name: Puritz, Connor
Publisher: name: arXiv
Year: 2020
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We study the possibility of efficient intermittent locomotion for two-link bodies that slide by changing their interlink angle periodically in time. We find that the anisotropy ratio of the sliding friction coefficients is a key parameter, while solutions have a simple scaling dependence on the friction coefficients' magnitudes. With very anisotropic friction, efficient motions involve coasting in low-drag states, with rapid and asymmetric power and recovery strokes. As the anisotropy decreases, burst-and-coast motions change to motions with long power strokes and short recovery strokes, and roughly constant interlink angle velocity on each. These motions are seen in the spaces of sinusoidal and power-law motions described by two and five parameters, respectively. Allowing the duty cycle to vary greatly increases the motions' efficiency compared to the case of symmetric power and recovery strokes. Allowing further variations in the concavity of the power and recovery strokes improves the efficiency further only when friction is very anisotropic. Near isotropic friction, a variety of optimally efficient motions are found with more complex waveforms. Many of the optimal sinusoidal and power-law motions are similar to those that we find with an optimization search in the space of more general periodic functions (truncated Fourier series). When we increase the resistive force's power-law dependence on velocity, the optimal motions become smoother, slower, and less efficient, particularly near isotropic friction.
description: 30 pages, 20 figures
Teaching Medical Students to Communicate Risks Like Military Intelligence Analysts
Creators: name: Korin, Maya
name: Southwell, Brian
name: Yu, Allen
name: Campbell, Peter
name: Brooks, James S.
name: Muller, David
Publisher: name: SAGE Publications
Year: 2024

description: 
Communication about health often involves descriptions of risk: the probability or likelihood of an unfavorable outcome. Communicating risk helps individuals make choices about their own health by building understanding of potential outcomes and providing context for the importance of procedures, health interventions, and lifestyle choices. However, medical education in the United States does not provide future physicians with adequate statistical literacy to communicate risk effectively and rarely encourages them to practice communicating risk in pre-clinical years. Risk communication in military intelligence, a field with formalized risk language and training, offers a unique perspective into potential improvements for medical risk communication. With backgrounds in the military, public health, communication, surgery, and medical education, the authors offer the following recommendations to improve risk communication for medical students. (1) Encourage the use of numerical absolute risk when communicating among health practitioners to avoid varied interpretations of what different risk descriptors (“uncommon,” “likely,” or “low”) might mean; (2) build efficient, teachable skills in use of patient-facing risk communication tools like comparative probabilities and visual aids; and (3) practice estimating risk through role-play of risk communication between medical students and standardized patients. By improving risk communication in medical education, future doctors will be better equipped to build trust through open communication and improve the health of the patients and the communities for whom they care.
title: Органическая химия. Курс лекций
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2017

description: В учебном пособии приведены необходимые сведения о современном состоянии теоретических основ органической химии, использована классификация веществ на ряды и классы. Описаны общие способы получения и химические свойства соединений основных классов, приведены области применения важнейших соединений этих классов. Даны основы биохимии путем разбора сведений о химическом строении и свойствах аминокислот и белков, углеводов, нуклеиновых кислот, гидрокси- и оксокислот, гетероциклических соединений. Рекомендовано для бакалавров направления 18.03.01 «Химическая технология» всех форм обучения, а также полезно студентам других направлений, изучающим данный курс органической химии.
Mitigating Fiber Nonlinearities by Short-length Probabilistic Shaping
Creators: name: Fehenberger, Tobias
name: Griesser, Helmut
name: Elbers, Jörg-Peter
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We show that short-length probabilistic shaping reduces nonlinear interference in optical fiber transmission. SNR improvements of up to 0.8 dB are obtained. The shaping gain vanishes when interleaving is employed and not undone before transmission.
An HST Search for Lyman Continuum Emission From Galaxies at z=1.1--1.4
Creators: name: Malkan, Matthew
name: Webb, Wayne
name: Konopacky, Quinn
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: If enough of their Lyman limit continuum escapes, star-forming galaxies could be significant contributors to the cosmic background of ionizing photons. To investigate this possibility, we obtained the first deep imaging in the far ultraviolet of eleven bright blue galaxies at intermediate redshift (z=1.1--1.4). NO Lyman continuum emission was detected. Sensitive, model-independent, upper limits of typically 2 x 10**-19 erg/sec/cm2/Ang were obtained for the ionizing flux escaping from these normal galaxies. This corresponds to lower limits on the observed ratio of 1500 to 700Ang flux of 150 up to 1000. Based on a wide range of stellar synthesis models, this suggests that less than 6%, down to less than 1%, of the available ionizing flux emitted by hot stars is escaping these galaxies. The magnitude of this spectral break at the Lyman l imit confirms that the basic premise of `Lyman break' searches for galaxies at high redshift can also be applied at intermediate redshifts. This implies that the integrated contribution of galaxies to the UV cosmic background at z around 1.2 is less than 15%, and may be less than 2%.
description: 20 manuscript pages, which includes two tables and two figures. To be published in 1 December 2003 issue of The Astrophysical Journal
title: Органическая химия. Номенклатура, теоретические основы, алканы, цикланы
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2018

description: Пособие построено в виде сборника задач, охватывающего обширный объем материала по номенклатуре всех классов органических соединений, теоретическим основам органической химии, предельным (алканам) и алициклическим соединениям. Каждая задача в пособии составлена из вопроса и четырех возможных ответов. Активная самостоятельная работа студентов с конспектом лекций и рекомендуемым учебником позволяет найти единственно правильный ответ на поставленный вопрос. Для придания самостоятельности работе в каждой теме материал разбит на ряд вариантов, внутри которых он расположен в порядке рассмотрения темы на лекциях. Предназначается для студентов всех технологических и химико-технологических направлений профиля СПбГУПТД, изучающих дисциплины «Органическая химия», «Органическая химия и основы биохимии», «Химия».
How is digital health suitability measured for communities? A systematic review
Creators: name: Khairat, Saif
name: McSwain, David
name: Geracitano, John
name: Barron, Luke
Publisher: name: SAGE Publications
Year: 2024

description: 
Background
Digital health services continue growing in usage and popularity, with patients and healthcare organizations benefiting from their use. Despite this, no mechanism exists to measure a patient's and community's suitability to leverage these services.

Objective
This systematic review aims to evaluate the extent and nature of measuring the overall suitability of individuals and communities within the digital health landscape.

Methods
Database searches in February 2024 across PubMed, Cumulative Index of Nursing and Allied Health Literature (CINAHL), Embase, and IEEE Xplore yielded 1044 unique references. Two screening stages resulted in 10 articles that met all evaluation criteria for review inclusion.

Results
This systematic review found a gap in the ability to holistically assess a patient's and community's suitability to access digital health services. Myriad indices and tools identify isolated factors contributing to digital health accessibility (e.g., broadband availability); however, no comprehensive mechanism adequately informs providers, policymakers, and researchers.

Conclusion
A comprehensive index that accurately reflects suitability for digital health services is needed. Index factors should include a combination of indicators related to socioeconomic status, digital accessibility, such as device and internet access, and social determinants of health. Together, these form the predominant driving factors related to one's ability to participate in digital health services.
Structural studies of 2,5-disubstituted 1,3,4-thiadiazole derivatives from dithioesters under the mild condition: Studies on antioxidant, antimicrobial activities, and molecular docking
Creators: name: Kemparaje Gowda
name: Swarup, Hassan A.
name: Nagarakere, Sandhya C.
name: Shobith Rangappa
name: Rangappa S. Kanchugarkoppal
name: Mantelingu Kempegowda
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Computational Biology

description: A series of 2,5-disubstituted 1,3,4-thiadiazole was synthesized and evaluated for their antioxidant and molecular docking studies. These molecules were efficiently synthesized under mild and inexpensive starting material. Construction of these molecules developed using substituted aldehydes and substituted dithioesters in presence of NCS (N-Chorosuccinimide). The compounds 4a, 4b, 4c, 4f, and 4k showed good antibacterial and antioxidant activity among which, 4k possess excellent antibacterial and antioxidant activity. The results of antioxidant activity studies revealed that compound 4k manifested profound antioxidant potential. The molecular docking study was performed with respective newly synthesized compounds to ascertain the binding mode of 4k with respect to the critical proteins involved in biosynthesis and metabolic pathways.
A Mechanically Tunable Quantum Dot in a Graphene Break Junction
Creators: name: Caneva, Sabina
name: Hermans, Matthijs D.
name: Lee, Martin
name: Garcia-Fuente, Amador
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Dekker, Cees
name: Ferrer, Jaime
name: van der Zant, Herre S. J.
name: Gehring, Pascal
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Graphene quantum dots (QDs) are intensively studied as platforms for the next generation of quantum electronic devices. Fine tuning of the transport properties in monolayer graphene QDs, in particular with respect to the independent modulation of the tunnel barrier transparencies, remains challenging and is typically addressed using electrostatic gating. We investigate charge transport in back-gated graphene mechanical break junctions and reveal Coulomb blockade physics characteristic of a single, high-quality QD when a nanogap is opened in a graphene constriction. By mechanically controlling the distance across the newly-formed graphene nanogap, we achieve reversible tunability of the tunnel coupling to the drain electrode by five orders of magnitude, while keeping the source-QD tunnel coupling constant. These findings indicate that the tunnel coupling asymmetry can be significantly modulated with a mechanical tuning knob and has important implications for the development of future graphene-based devices, including energy converters and quantum calorimeters.
description: 22 pages, 5 figures
A BRST gauge-fixing procedure for Yang-Mills theory on sphere
Creators: name: Banerjee, Rabin
name: Deguchi, Shinichi
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A gauge-fixing procedure for the Yang-Mills theory on an n-dimensional sphere (or a hypersphere) is discussed in a systematic manner. We claim that Adler's gauge-fixing condition used in massless Euclidean QED on a hypersphere is not conventional because of the presence of an extra free index, and hence is unfavorable for the gauge-fixing procedure based on the BRST invariance principle (or simply BRST gauge-fixing procedure). Choosing a suitable gauge condition, which is proved to be equivalent to a generalization of Adler's condition, we apply the BRST gauge-fixing procedure to the Yang-Mills theory on a hypersphere to obtain consistent results. Field equations for the Yang-Mills field and associated fields are derived in manifestly O(n+1) covariant or invariant forms. In the large radius limit, these equations reproduce the corresponding field equations defined on the n-dimensional flat space.
description: 15 pages, revtex4
Comment on "Diffusion Monte Carlo study of jellium surfaces: Electronic densities and pair correlation functions"
Creators: name: Pitarke, J. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In a fixed-node diffusion Monte Carlo calculation of the total energy of jellium slabs, Acioli and Ceperley [Phys. Rev. B {\bf 54}, 17199 (1996)] reported jellium surface energies that at low electron densities were significantly higher than those predicted in the local-density approximation (LDA) of density-functional theory. Assuming that the fixed-node error in the slab and the bulk calculations cancel out, we show that their data yield surface energies that are considerably closer to the LDA and in reasonable agreement with those obtained in the random-phase approximation.
description: 3 pages, 2 figures, to appear in Phys. Rev. B
Measurement method for objective cyclist behavior parameters
Creators: name: Riske Meijer
name: Dam, Esra Van
name: Bouma, Henri
name: Baan, Jan
name: Hurk, Sander E. Van Der
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Objective: The objective of this research is to study the feasibility of measuring behavioral indicators that reflect effects of infrastructure and interaction with other road users. Methods: An observation study was performed using 6 cameras above a separated cycle path next to a road which included a crossing with both cyclists and cars. A learning method based on Single Shot MultiBox Detector was applied to automatically detect the cyclists, and cyclist tracks were determined. Next, kinematic parameters were calculated from the cyclists’ tracks. Amongst others, the cyclists’ intensity, speed, position on the cycle path, and the distance to each other were analyzed for a busy period as well as for a quiet period of the day. Results: With the measurement method developed in this study it is possible to analyze the cyclists’ intensity, the space they use at the cycle path, their average velocity, waiting times, the space and velocity amongst each other, and red light negation. However, collisions were not seen in the dataset analyzed, and the data is not sufficiently accurate to analyze sudden braking actions. Conclusion: It can be concluded that the developed measurement method provides insight of the cyclists’ behavior in such a way that it can already be used for obtaining information to make changes to the infrastructure that will improve the comfort and safety of cyclists. The method could be further developed for doing qualitative comfort and safety analyses, and for doing analyses of the interaction between various types of road participants.
Asteroseismic Signatures of Helium gradients in Main-Sequence A Stars ; Application to the roAp Star HD60435
Creators: name: Vauclair, Sylvie
name: Theado, Sylvie
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Asteroseismology is found to be a excellent tool for detecting diffusion-induced helium gradients inside main-sequence A stars. Models have been computed for 1.6 and 2.0 M$_{\odot}$ stars with pure helium diffusion, at different ages, so that the helium gradient lies at different depths inside the star. The adiabatic oscillation frequencies have been analysed and compared with those of a model without diffusion. Clear signatures of the diffusion-induced helium gradient are found in the so-called ``second differences" : these frequency differences present modulations due to the partial reflexion of the sound waves on the layer where the helium gradient takes place. A tentative application to the roAp star HD60435, which presents enough detected oscillation frequencies for the test to be possible, is very encouraging. The results suggest the presence of a helium gradient inside the star, which is consistent with the idea that the triggering of the oscillations is due to the hydrogen $κ$-mechanism.
description: to be published in A&A ; 17 pages ; 8 figures
title: Основы механизации работ в ЦБП
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2017

description: Приводятся общие понятия и организационные принципы механизации трудоемких работ. Отдельные разделы посвящены механизации работ с насыпными, наливными, древесными грузами, а также механизации работ с готовой продукцией предприятий ЦБП. Отражены характеристики грузов, устройство приемных узлов и механизированных складов. Рассмотрены вопросы выбора и предварительного расчета грузоподъемного и транспортного оборудования. Пособие предназначено для студентов (бакалавров и магистров) по направлению 15.03.02 и 15.04.02 «Технологические машины и оборудование». Может быть использовано в системах послевузовского образования.
Elimination of parasitic solutions in theory of flexible polyhedra
Creators: name: Sabitov, I. Kh.
name: Stepanov, D. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Metric Geometry (math.MG)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 51F25

description: The action of the rotation group $SO(3)$ on systems of $n$ points in the $3$-dimensional Euclidean space $\mathbf{R}^3$ induces naturally an action of $SO(3)$ on $\mathbf{R}^{3n}$. In the present paper we consider the following question: do there exist $3$ polynomial functions $f_1$, $f_2$, $f_3$ on $\mathbf{R}^{3n}$ such that the intersection of the set of common zeros of $f_1$, $f_2$, and $f_3$ with each orbit of $SO(3)$ in $R^{3n}$ is nonempty and finite? Questions of this kind arise when one is interested in relative motions of a given set of $n$ points, i.e., when one wants to exclude the local motions of the system of points as a rigid body. An example is the problem of deciding whether a given polyhedron is non-trivially flexible. We prove that such functions do exist. To get a necessary system of equations $f_1=0$, $f_2=0$, $f_3=0$, we show how starting by choice of a hypersurface in $\mathbf{CP}^{n-1}$ containing no conics, no lines, and no real points one can find such a system.
description: 14 pages
Влияние перестройки на изучение национальной истории в Молдавской CCP
Creators: name: Dolghi, Adrian
Publisher: name: figshare
Year: 2020
Subjects: History

description: Влияние перестройки на изучение национальной истории в Молдавской CCP // Власть и общество в истории:
Геополитические изменения на постсоветском пространстве в конце XX - начале XXI вв.; Междунар. лет. шк. молодых историков стран-участниц содружества независимых государств: Материалы для участников, 11-I8 июня 2008 г., Вадул-луй-Водэ, Респ. Молдова. - К.: СЕР ШМ, 2008. p.165-168
Edgar Degas and French Feminism, ca. 1880 : "The Young Spartans," the Brothel Monotypes, and the Bathers Revisited
Creators: name: Broude, Norma
Publisher: name: The Art Bulletin LXX, No. 4 (December 1988)
Year: 2023
Subjects: classificationCode: 3601
subject: Art history, theory and criticism

description: Description to be added
Spin-Isospin Resonances and Neutron Skin of Nuclei
Creators: name: Vretenar, D.
name: Paar, N.
name: Niksic, T.
name: Ring, P.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The Gamow-Teller resonances (GTR) and isobaric analog states (IAS) of a sequence of even-even Sn target nuclei are calculated by using the framework of the relativistic Hartree-Bogoliubov model plus proton-neutron quasiparticle random-phase approximation. The calculation reproduces the experimental data on ground-state properties, as well as the excitation energies of the isovector excitations. It is shown that the isotopic dependence of the energy spacings between the GTR and IAS provides direct information on the evolution of neutron skin-thickness along the Sn isotopic chain. A new method is suggested for determining the difference between the radii of the neutron and proton density distributions along an isotopic chain, based on measurement of the excitation energies of the GTR relative to the IAS.
description: 9 pages, 2 figures, accepted in Phys. Rev. Lett
title: Основы проектирования. Лабораторный практикум
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2019

description: Лабораторный практикум посвящен экспериментальным исследованиям механизмов машин отрасли. Тематика лабораторных работ совпадает с основными разделами лекционного курса и дополняет их. Каждая из лабораторных работ, включенных в практикум, содержит основы теории, описание лабораторного стенда, порядок выполнения работы, порядок обработки результатов эксперимента, возможное представление результатов экспериментов и их обработки в виде отчета, контрольные вопросы. В приложениях приведено подробное описание измерительной аппаратуры и порядок работы с ней.
Space, time and velocity association of successive coronal mass ejections
Creators: name: Gopalswamy, Alejandro Lara. Nat
name: Niembro, Tatiana
name: Pérez-Enríquez, Román
name: Yashiro, Seiji
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Our aim is to investigate the possible physical association between consecutive coronal mass ejections (CMEs). Through a statistical study of the main characteristics of 27761 CMEs observed by SOHO/LASCO during the past 20 years. We found the waiting time (WT) or time elapsed between two consecutive CMEs is $< 5$ hrs for 59\% and $< 25$ hrs for 97\% of the events, and the CME WTs follow a Pareto Type IV statistical distribution. The difference of the position-angle of a considerable population of consecutive CME pairs is less than $30^\circ$, indicating the possibility that their source locations are in the same region. The difference between the speed of trailing and leading consecutive CMEs follows a generalized Student t-distribution. The fact that the WT and the speed difference have heavy-tailed distributions along with a detrended fluctuation analysis shows that the CME process has a long-range dependence. As a consequence of the long-range dependence, we found a small but significative difference between the speed of consecutive CMEs, with the speed of the trailing CME being higher than the speed of the leading CME. The difference is largest for WTs < 2 hrs and tends to be zero for WTs > 10 hrs, and it is more evident during the ascending and descending phases of the solar cycle. We suggest that this difference may be caused by a drag force acting over CMEs closely related in space and time.
Incremental Skill Learning of Stable Dynamical Systems
Creators: name: Saveriano, Matteo
name: Lee, Dongheui
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Efficient skill acquisition, representation, and on-line adaptation to different scenarios has become of fundamental importance for assistive robotic applications. In the past decade, dynamical systems (DS) have arisen as a flexible and robust tool to represent learned skills and to generate motion trajectories. This work presents a novel approach to incrementally modify the dynamics of a generic autonomous DS when new demonstrations of a task are provided. A control input is learned from demonstrations to modify the trajectory of the system while preserving the stability properties of the reshaped DS. Learning is performed incrementally through Gaussian process regression, increasing the robot's knowledge of the skill every time a new demonstration is provided. The effectiveness of the proposed approach is demonstrated with experiments on a publicly available dataset of complex motions.
title: От нефтепродуктов к полимерам
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2019

description: Учебное пособие содержит теоретический материал для самостоятельной работы студентов по дисциплине «Технология полимеров», «Получение и переработка полимеров», «Дополнительные главы технологии полимерных материалов». Рекомендовано для бакалавров и магистров по направлениям 18.03.01 и 18.04.01 «Химическая технология».
Some Homogeneous Bianchi Type IX Viscous Fluid Cosmological Models with a varying $Λ$
Creators: name: Pradhan, Anirudh
name: Srivastav, Sudhir Kumar
name: Yadav, Mahesh K.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Some Bianchi type IX viscous fluid cosmological models are investigated. To get a solution a supplementary condition between metric potentials is used. The viscosity coefficient of bulk viscous fluid is assumed to be a power function of mass density whereas the coefficient of shear viscosity is considered as proportional to scale of expansion in the model. The cosmological constant $Λ$ is found to be positive and is a decreasing function of time which is supported by results from recent supernova observations. Some physical and geometric properties of the models are also discussed.
description: 14 pages
Branching Random Walks with Immigration. Lyapunov Stability
Creators: name: Makarova, Yu.
name: Han, D.
name: Molchanov, S.
name: Yarovaya, E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J80, 60J52, 92D25

description: We consider a continuous-time symmetric branching random walk on multidimensional lattices with immigration and infinite number of initial particles. We assume that at every lattice point a process of birth and death of particles is described by a Bienayme-Galton- Watson branching process. The assumption on immigration of particles is that a new particle can appear at every lattice point from the outside. The subject of the study is a limit distribution of the particle field on the lattice. The differential equations for correlation functions for the number of particles at an arbitrary time moment at the fixed points on the lattice are obtained. We study the asymptotic behaviour for the first two moments of a number of particles at every lattice point and Lyapunov stability of the process. The Lyapunov stability is considered under the assumptions that birth, death and immigration intensities depend on the lattice points.
AdSS_5 Brane World Cosmology
Creators: name: Gonta, Denis
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The gravitational equations of the 5-dimensional analogue of the AdSS space-time, where all the matter fields are confined on the 3-brane are examined. The most general solutions are established in the generic case of a non-Z_2-symmetric bulk. Constraining these solutions we derive a number of remarkable metrics widely investigated in the literature. Finally, we make many important conclusions about the viability of the presented scenario and cosmology.
description: JHEP file, 8 pages, v5: Corrected typos
On the Angular Momentum History of Galactic Disks
Creators: name: Renzini, Alvio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The stellar mass, size and rotational velocity of galactic disks all grow from redshift ~2 to the present by amounts that are estimated from observationally derived scaling relations. The product of these three quantities, the angular momentum of stellar disks, is then estimated to grow by a remarkably large factor, between ~20 and ~50, whereas other evidences suggest a more moderate increase. This requires that the specific angular momentum of the accreted gas should systematically increase with time while remaining co-rotational with the disk over most of the last ~10 Gyr. Thus, the baryonic gas vorticity of the circumgalactic medium appears to emerge as a major driver in galaxy evolution, and this paper is meant to attract attention on the sheer size of the angular momentum increase and on the need to explore to which extent this can be observed in nature and/or in simulations.
description: % pages, 0 figures, to appear on MNRAS