cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
II Congresso Nacional de Planejamento e Manejo de Trilhas - Rio de Janeiro 2013
Creators: name: Costa, Nadja Maria Castilho Da
name: Costa, Vivian Castilho Da
name: Mello, Flávio Augusto Pereira
Publisher: name: Zenodo
Year: 2013
Subjects: Trilhas
Áreas protegidas
Uso público
Turismo de Natureza
Recreação na natureza

description: O II Congresso Nacional de Planejamento e Manejo de Trilhas é uma iniciativa do Grupo de Estudos Ambientais-GEA e do Laboratorio de Geoprocessamento - LAGEPRO, do Departamento de Geografia Física da Universidade do Estado do Rio de Janeiro e serão realizados de 16 a 18 de outubro na cidade do Rio de Janeiro em conjunto com o I Colóquio Brasileiro para a Red Latinoamericana de Senderismo, evento este preparatório para a participação nacional no I Congreso de la Red Latinoamericana de Senderismo, com previsão para ocorrer no Chile em 2014.

Dentre os trabalhos se destacaram as aplicações em SIGWEB, modelos de gestão de redes de trilhas de longo percurso, gestão de riscos em trilhas, implantação de trilhas terrestres e subaquaticas, proposta da consolidação da área de pesquisa "Ecologia de Trilhas" como alternativa mais especifica que Ecologia da Recreação, divulgação da aplicação de princípios de Bioengenharia de solos na recuperação e manutenção de trilhas e a confirmação da importancia da geodiversidade nas ações de planejamento e manejo de trilhas.

Concluindo, na reunião plenária de encerramento se decidiu pela continuidade do Congresso Nacional de Planejamento e Manejo de trilhas de forma itinerante, bianual, sendo a expressão nacional da Red

Latinoamericana de Senderismo. Deste modo considerou-se que o evento contribuiu com a exposição de múltiplos olhares e recursos sobre o tema, através de conferências, mesas redondas, grupos de trabalhos e minicursos e divulgação do estado da arte sobre o tema, consolidando o debate sobre a gestão de áreas protegidas a partir da análise dos aspectos geográficos e ecológicos do manejo de trilhas.
PYTHONDA NEYRON TARMOQNI QURISH VA BASHORAT QILISH
Creators: name: Zulunov, Ravshanbek
Publisher: name: Zenodo
Year: 2023
Subjects: Sun'iy intellekt
Python kutubhonalari
neyron tarmoq
bashorat
regressiya

description: Maqolada Sun'iy intellekt texnologiyalarini amalda tadbiq qilish, Mashinali o'rganish va Chuqur o'rganish texnologiyalari ko'rib chiqilgan. Python tili maxsus kutubhonalaridan foydalanib, neyron tarmoqlar qurish va bashorat qilish uslublari ko'rib chiqilgan. Chiziqli regressiya va NumPy kutubhonalarini qo'llash taklif etilgan.
Flore d'Afrique centrale - Spermatophyta - Zygophyllaceae
Creators: name: Gilbert, G.
Publisher: name: Zenodo
Year: 1958
Subjects: Flora
Plants
Identification
Botany
Taxonomy
Systematics
Central Africa
Democratic Republic of the Congo
Rwanda
Burundi

description: PDF version of treatment of Zygophyllaceae in Flore d'Afrique centrale series
Safety and Efficacy of Coformulated Bictegravir, Emtricitabine, and Tenofovir Alafenamide Among People Living with HIV-1
Creators: name: Shengnan Zhao
name: Wang, Wenjing
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Medicine and Health Sciences
subject: Infectious Disease
subject: Medical Specialties

description: HIV-1 infection is a global health issue. In the past few years, antiretroviral (ARV) drugs has been the common drugs for the treatment of HIV-1. At present, the commonly used daily oral drugs often appear in triple or double combination, which requires high adherence of patients. By reducing the number of daily tablets, Biktarvy, a new compound single tablet, can reduce patients' difficulty in taking medicine and improve medication adherence. We performed a meta-analysis to summarize the evidence on safety and efficacy of Biktarvy.
On Factor Universality in Symbolic Spaces
Creators: name: Boyer, Laurent
name: Theyssier, Guillaume
Publisher: name: arXiv
Year: 2010
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The study of factoring relations between subshifts or cellular automata is central in symbolic dynamics. Besides, a notion of intrinsic universality for cellular automata based on an operation of rescaling is receiving more and more attention in the literature. In this paper, we propose to study the factoring relation up to rescalings, and ask for the existence of universal objects for that simulation relation. In classical simulations of a system S by a system T, the simulation takes place on a specific subset of configurations of T depending on S (this is the case for intrinsic universality). Our setting, however, asks for every configurations of T to have a meaningful interpretation in S. Despite this strong requirement, we show that there exists a cellular automaton able to simulate any other in a large class containing arbitrarily complex ones. We also consider the case of subshifts and, using arguments from recursion theory, we give negative results about the existence of universal objects in some classes.
Multi-scale spatio-temporal distribution of faunal assemblages on the Lucky Strike hydrothermal vent field (-1,700 m)
Creators: name: Van Audenhaege, Loïc
Publisher: name: Zenodo
Year: 2021

description: My PhD thesis aims to investigate how environmental and biotic factors act on assemblage distribution and temporal dynamics at deep-sea hydrothermal vents. It is divided in three imagery surveys according to distinct scales of biological organisation. In fact, identifying relevant drivers depends on the study scale and therefore, requires a multi-scale approach. For the first chapter, we used the deep-sea EMSO-Azores observatory to assess the infra-daily dynamics and long-term evolution of an endemic hydrothermal mussel assemblage (Lucky Strike, -1,700 m). Spatio-temporal dynamics were investigated following three different analyses defined for imagery data. While local change in hydrothermal activity triggered decimetre-scale mussel migration over three years, we observed a 7-year stability with no major mortality event. Predation activities was not a source of individual mortality. Following a review of literature, the striking stability of the assemblage contrasted with the higher variability observed for the intertidal communities. Therefore, this study questions the postulate that hydrothermal vent assemblages are necessarily variable and ephemeral ecosystems. The second chapter uses a time series of 3D models of a hydrothermal edifice in order to put our results in perspective. Long-term stability of the fauna is expected while local variability will be influenced by small-scale repositioning of vent exits and the interaction with currents. With larger seabed mosaics acquired over the vent field, the last chapter aims to investigate the spatial sphere of hydrothermal influence also depending on the hydrothermal circulation.
title: 4.-8. März 2019
Creators: name: Lofi, Christoph
name: Valle Torre, Manuel
name: Ye, Mengmeng
Publisher: name: Gesellschaft für Informatik, Bonn
Year: 2019
Subjects: subject: Perceptual Attributes
subject: Modelling
subject: User-Generated Attribute Values
subject: Query-By-Example Navigation

description: Effectively modelling and querying experience items like movies, books, or games in databases is challenging because these items are better described by their resulting user experience or perceived properties than by factual attributes. However, such information is often subjective, disputed, or unclear. Thus, social judgments like comments, reviews, discussions, or ratings have become a ubiquitous component of most Web applications dealing with such items, especially in the e-commerce domain. However, they usually do not play major role in the query process, and are typically just shown to the user. In this paper, we will discuss how to use unstructured user reviews to build a structured semantic representation of database items such that these perceptual attributes are (at least implicitly) represented and usable for navigational queries. Especially, we argue that a central challenge when extracting perceptual attributes from social judgments is respecting the subjectivity of expressed opinions. We claim that no representation consisting of only a single tuple will be sufficient. Instead, such systems should aim at discovering shared perspectives, representing dominant perceptions and opinions, and exploiting those perspectives for query processing.
Diseño para la interdependencia del comportamiento interespecies
Creators: name: Velasquez, Juan
name: Restrepo, Juliana
name: Roldán García, Andres Felipe
Publisher: name: figshare
Year: 2021
Subjects: subject: 120301 Design History and Theory
subject: FOS: Arts (arts, history of arts, performing arts, music)
subject: Design

description: El comportamiento humano incide en el ecosistema de una forma desbalanceada. Esta relación entre las diferentes formas de vida son permeadas por el mundo político y social de la especie humana donde prevalece la instrumentalización como la producción (biotecnología), el mantenimiento (producción alimentaria) y la cosificación (proyección humana en otras especies). Una disciplina con gran responsabilidad en este desbalance es el diseño. Desde su paradigma tradicional ha ubicado al humano como un diseñador de racionalidad técnica donde prima la producción de artefactos que modifican significativamente (con y sin intención) el entorno; después con el cambio paradigmático, el humano-diseñador pasa a ser un agente reflexivo en la acción donde toma fuerza la idea de un diseño ontológico, participativo y relacional enfocado en re- conectar, cuidar e incluir múltiples mundos a los problemas complejos o perversos. Cuidar la relación entre las especies es un tema de diseño y su actual paradigma. Los autores proponen entonces una discusión desde esta disciplina sobre las acciones fuertemente dependientes e influenciadas por lo que otras especies hacen (interdependencia) en espacios comunes (zonas de interacción) con la intención de crear espacios de diálogo para la exploración en actividades de diseño que faciliten interacciones interespecies.
title: 4.-8. März 2019
Creators: name: Boehm, Matthias
name: Evfimievski, Alexandre
name: Reinwald, Berthold
Publisher: name: Gesellschaft für Informatik, Bonn
Year: 2019
Subjects: subject: Cumulative Aggregates
subject: ML Systems
subject: Large-Scale Machine Learning
subject: Data-Parallel Computation
subject: Apache SystemML

description: Cumulative aggregates are often overlooked yet important operations in large-scale machine learning (ML) systems. Examples are prefix sums and more complex aggregates, but also preprocessing techniques such as the removal of empty rows or columns. These operations are challenging to parallelize over distributed, blocked matrices—as commonly used in ML systems—due to recursive data dependencies. However, computing prefix sums is a classic example of a presumably sequential operation that can be efficiently parallelized via aggregation trees. In this paper, we describe an efficient framework for data-parallel cumulative aggregates over distributed, blocked matrices. The basic idea is a self-similar operator composed of a forward cascade that reduces the data size by orders of magnitude per iteration until the data fits in local memory, a local cumulative aggregate over the partial aggregates, and a backward cascade to produce the final result. We also generalize this framework for complex cumulative aggregates of sum-product expressions, and characterize the class of supported operations. Finally, we describe the end-to-end compiler and runtime integration into SystemML, and the use of cumulative aggregates in other operations. Our experiments show that this framework achieves both high performance for moderate data sizes and good scalability.
The L-sigma Relation of Local HII Galaxies
Creators: name: Bordalo, Vinicius
name: Telles, Eduardo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present for the first time a new data set of emission line widths for 118 star-forming regions in HII galaxies (HIIGs). This homogeneous set is used to investigate the L-sigma relation in conjunction with optical spectrophotometric observations. Peculiarities in the line profiles such as sharp lines, wings, asymmetries, and in some cases more than one component in emission were verified. From a new independent homogeneous set of spectrophotometric data we derived physical condition parameters and performed the statistical principal component analysis. We have investigated the potential role of metallicity (O/H), Hbeta equivalent width (WHbeta) and ionization ratio [OIII]/[OII] to account for the observational scatter of L-sigma relation. Our results indicate that the L-sigma relation for HIIGs is more sensitive to the evolution of the current starburst event (short-term evolution) and dated by WHbeta or even the [OIII]/[OII] ratio. The long-term evolution measured by O/H also plays a potential role in determining the luminosity of the current burst for a given velocity dispersion and age as previously suggested. Additionally, galaxies showing Gaussian line profiles present more tight correlations indicating that they are best targets for the application of the parametric relations as an extragalactic cosmological distance indicator. Best fits for a restricted homogeneous sample of 45 HIIGs provide us a set of new extragalactic distance indicators with an RMS scatter compatible with observational errors of Delta_log(LHalpha) = 0.2 dex or 0.5 mag. Improvements may still come from future optimized observational programs to reduce the observational uncertainties on the predicted luminosities of HIIGs in order to achieve the precision required for the application of these relations as tests of cosmological models.
description: 53 pages, 15 figures, 4 complete tables Accepted for publication in The Astrophysical Journal
title: 4.-8. März 2019
Creators: name: Reinke, Mark
name: Kischkel, André
name: Jahns, Volker
name: Crenze, Uwe
name: Beltcheva, Olga
Publisher: name: Gesellschaft für Informatik, Bonn
Year: 2019
Subjects: subject: DPMA
subject: Patentprüfung
subject: Recherche
subject: Klassifikation
subject: kognitive Verfahren
subject: Word Embeddings

description: Die Begutachtung von Patentanträgen ist ein aufwändiger Prüfprozess, dessen Ziel es ist, eine Entgegenhaltung zu finden. Dabei stellt die Verschleierung des Patentanspruchs durch gezielte Umschreibungen eine große Herausforderung dar. In enger Zusammenarbeit zwischen dem Deutschen Patent-und Markenamt und der interface projects GmbH entstand ein modernes Recherche-und Klassifikationssystem auf Basis von durch neuronale Netze gelernten Distributed Word Embeddings. Der Beitrag stellt verschiedene Verfahren zum Lernen von Word Embeddings vor und bewertet diese hinsichtlich ihrer Eignung für die Prüfung von Patentanmeldungen.
Flore d'Afrique centrale - Spermatophyta - Rutaceae
Creators: name: Gilbert, G.
Publisher: name: Zenodo
Year: 1958
Subjects: Flora
Plants
Identification
Botany
Taxonomy
Systematics
Central Africa
Democratic Republic of the Congo
Rwanda
Burundi

description: PDF version of treatment of Rutaceae in Flore d'Afrique centrale series
Techno-economic and environmental assessment of microwave-assisted catalytic pyrolysis of biomass
Creators: name: Zhu, Hui
Publisher: name: University of British Columbia
Year: 2021

description: The conversion of abundant under-utilized forest residues into biofuels is a promising strategy for transitioning the energy structure and for decarbonizing the transportation sector. As one of the emerging thermo-chemical conversion technologies, microwave-assisted catalytic pyrolysis (MACP) is able to efficiently convert solid biomass into valuable products, including bio-oil (~36 wt%), biochar (~28 wt%) and non-condensable gas (NCG) (~36 wt%). As well as resolving technical obstacles, MACP was also assessed for its economic and environmental impact, at a systematic level, for the purpose of commercialization. The work described in this study involved a techno-economic assessment (TEA) and a life cycle assessment (LCA) based on process integration. This was used to evaluate the economic feasibility and environmental impact of a hypothetical MACP system for the co-production of biofuel and biochar from forest residues in British Columbia (BC). The minimum selling price (MSP) of MACP biofuel was shown to be $1.01/L, indicating that MACP biofuel was still not priced competitively to petroleum fuels. The on-site utilization of NCG and integration of an upgrading process helped achieve self-sufficiency in heat and hydrogen supply, but raised concerns about high capital costs. Sensitivity analysis suggested that future research efforts should focus on improving the process performance and reducing the capital investment to bring down the MSP. However, LCA results suggested that an MACP system could potentially make a considerable contribution to reducing greenhouse gas (GHG) emissions of transportation fuels. The cradle-to-gate (CTG) carbon intensity (CI) of MACP biofuel was shown to be -57.6 g CO2-eq/MJ, indicating that a carbon-negative system could be achieved with a GHG emission reduction of 162% compared to petroleum fuels. The key reasons were the green electricity mix and carbon sequestration of co-product biochar. The dominant influence was shown to be biomass-to-biofuel conversion step which accounted for 47.3% of the GHG emissions produced. Besides, the conversion efficiencies and location specific parameters also had significant impacts on the CI of MACP derived biofuels.
title: Ð­Ð»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ°Ñ ÑÐ°ÑÑÑ Ð¿Ð¾Ð´ÑÑÐ°Ð½ÑÐ¸Ð¸ 220/20/10 ÐºÐ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Electrical substation 220/20/10 kV
Creators: name: ÐÐ°Ð»ÑÑ, ÐÐ»ÐµÐºÑÐ°Ð½Ð´Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: Ð¿Ð¾Ð´ÑÑÐ°Ð½ÑÐ¸Ñ
Ð³Ð»Ð°Ð²Ð½Ð°Ñ ÑÑ ÐµÐ¼Ð° ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¸Ñ ÑÐ¾ÐµÐ´Ð¸Ð½ÐµÐ½Ð¸Ð¹
ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»Ð¸ÑÐµÐ»ÑÐ½ÑÐµ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð°
ÐºÐ¾ÑÐ¾ÑÐºÐ¾Ðµ Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ðµ
ÐºÐ¾Ð¼Ð¼ÑÑÐ°ÑÐ¸Ð¾Ð½Ð½ÑÐµ Ð°Ð¿Ð¿Ð°ÑÐ°ÑÑ
substation
main scheme of electrical connections
switchgear
short circuit
electric switchboards

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¸Ð·Ð»Ð¾Ð¶ÐµÐ½ Ð¿Ð¾Ð´ÑÐ¾Ð´ Ðº Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¾Ð¹ ÑÐ°ÑÑÐ¸ Ð¿Ð¾Ð´ÑÑÐ°Ð½ÑÐ¸Ð¸. ÐÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÑÐ½ Ð²ÑÐ±Ð¾Ñ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½Ð¾Ð¹ ÑÑÑÑÐºÑÑÑÐ½Ð¾Ð¹ ÑÑÐµÐ¼Ñ Ð¸ Ð¿Ð¾Ð´Ð±Ð¾Ñ Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð³Ð¾ ÑÐ»ÐµÐºÑÑÐ¾Ð¾Ð±Ð¾ÑÑÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ. Ð Ð°ÑÑÑÐ¸ÑÐ°Ð½Ñ ÑÐ¾ÐºÐ¸ ÐºÐ¾ÑÐ¾ÑÐºÐ¾Ð³Ð¾ Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ñ. ÐÑÐ±ÑÐ°Ð½Ñ ÐºÐ¾Ð¼Ð¼ÑÑÐ°ÑÐ¸Ð¾Ð½Ð½ÑÐµ Ð°Ð¿Ð¿Ð°ÑÐ°ÑÑ Ð¸ ÑÐ¾ÐºÐ¾Ð²ÐµÐ´ÑÑÐ¸Ðµ ÑÐ°ÑÑÐ¸, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¿ÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½Ð° Ð¸Ñ Ð¿ÑÐ¾Ð²ÐµÑÐºÐ°. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð° Ð³Ð»Ð°Ð²Ð½Ð°Ñ ÑÑÐµÐ¼Ð° ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¸Ñ ÑÐ¾ÐµÐ´Ð¸Ð½ÐµÐ½Ð¸Ð¹.
description: This work presents the approach to the design of electrical substation. The choice of the optimal structural scheme and the selection of the main electrical equipment. Calculated short-circuit currents. Switching devices and current carrying parts are selected, and also their check is made. The main electrical circuit has been developed.
Flore d'Afrique centrale - Spermatophyta - Balanitaceae
Creators: name: Gilbert, G.
Publisher: name: Zenodo
Year: 1958
Subjects: Flora
Plants
Identification
Botany
Taxonomy
Systematics
Central Africa
Democratic Republic of the Congo
Rwanda
Burundi

description: PDF version of treatment of Balanitaceae in Flore d'Afrique centrale series
The Rationale for Semantic Data Management: Making the Case
Creators: name: Atkin, Michael
Publisher: name: Zenodo
Year: 2023
Subjects: Business Case, Information Literacy

description: This is a call for engagement on how we define and present the complete business rationale for data management using semantic standards. I will outline the results of my research to demystify knowledge graph and address the root cause of the ‘data dilemma.’ This call for information literacy at the executive level must include the true costs of implementation, the obstacles (both bureaucratic and operational) that prevent broad adoption and the use case categories that offer sustainable value. I invite you to join me in this quest.
title: 4.-8. März 2019
Creators: name: Allen, David
name: Hodler, Amy
name: Hunger, Michael
name: Knobloch, Martin
name: Lyon, William
name: Needham, Mark
name: Voigt, Hannes
Publisher: name: Gesellschaft für Informatik, Bonn
Year: 2019
Subjects: subject: Graph databases
subject: graph analytics
subject: graph algorithms
subject: property graphs

description: Analytics of large graph data set has become an important means of understanding and influencing the world. The use of graph database technology in the International Consortium of Investigative Journalists’ (ICIJ) investigation of the Panama Papers and Paradise Papers or in cancer research illustrates how analysing graph-structured data helps to uncover important but hidden relationships. A very current example in that regards shows how graph analytics can help shed light on the operations of social media troll-networks, e.g. on Twitter. In similar fashion, graph analytics can help enterprises to unearth hidden patterns and structures within connected data, to make more accurate predictions and faster decisions. All this requires efficient graph analytics well-integrated with management of graph data. The Neo4j Graph Platform provides such an environment. It provides transactional processing and analytical processing of graph data including data management and analytics tooling. A central element for graph analytics in the Graph Platform are the Neo4j graph algorithms. Neo4j graph algorithms provide efficiently implemented, parallel versions of common graph algorithms, integrated and optimized for the Neo4j transactional database. In this paper, we will describe the design and integration Neo4j Graph Algorithms, demonstrate its utility of our approach with a Twitter Troll analysis, and show case its performance with a few experiments on large graphs.
title: ÐÑÐ¾ÑÐ¸Ð»Ð°ÐºÑÐ¸ÐºÐ° Ð¿ÑÐ¾ÑÐµÑÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½ÑÑ Ð·Ð°Ð±Ð¾Ð»ÐµÐ²Ð°Ð½Ð¸Ð¹, Ð²Ð¾Ð·Ð½Ð¸ÐºÑÐ¸Ñ Ð¿ÑÐ¸ Ð½Ð°ÑÑÑÐµÐ½Ð¸Ð¸ ÑÑÐ³Ð¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¸Ñ Ð¾ÑÐ½Ð¾Ð² ÑÐ°Ð±Ð¾ÑÐµÐ³Ð¾ Ð¼ÐµÑÑÐ° ÑÑÑÐ¾Ð¸ÑÐµÐ»Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Prevention of occupational diseases arising out of the violation of the basics of ergonomic workplace of the builder
Creators: name: ÐÐ¾Ð²Ð¸ÐºÐ¾Ð², ÐÐ²Ð³ÐµÐ½Ð¸Ð¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: Ð¿ÑÐ¾ÑÐµÑÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½ÑÐµ Ð·Ð°Ð±Ð¾Ð»ÐµÐ²Ð°Ð½Ð¸Ñ
ÑÑÐ³Ð¾Ð½Ð¾Ð¼Ð¸ÐºÐ°
ÑÑÐ³Ð¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÑÐ°Ð½Ð´Ð°ÑÑÑ
ÑÐ°ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¿ÑÐ¾ÑÐµÑÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½ÑÑ Ð·Ð°Ð±Ð¾Ð»ÐµÐ²Ð°Ð½Ð¸Ð¹
ÑÑÑÐ°Ð½Ð¾Ð²Ð»ÐµÐ½Ð¸Ðµ Ð¿ÑÐ¾ÑÐµÑÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½ÑÑ Ð·Ð°Ð±Ð¾Ð»ÐµÐ²Ð°Ð½Ð¸Ð¹
occupational diseases
ergonomics
ergonomic standards
investigation of occupational diseases
establishment of occupational diseases

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¸Ð·Ð»Ð¾Ð¶ÐµÐ½Ñ Ð¿Ð¾Ð¸ÑÐºÐ¸ Ð¸ ÑÑÑÐ°Ð½Ð¾Ð²Ð»ÐµÐ½Ð¸Ñ Ð²Ð·Ð°Ð¸Ð¼Ð¾ÑÐ²ÑÐ·Ð¸ Ð¼ÐµÐ¶Ð´Ñ Ð½Ð°ÑÑÑÐµÐ½Ð¸ÐµÐ¼ ÑÑÐ³Ð¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¸Ñ Ð¾ÑÐ½Ð¾Ð² ÑÐ°Ð±Ð¾ÑÐµÐ³Ð¾ Ð¼ÐµÑÑÐ° ÑÑÑÐ¾Ð¸ÑÐµÐ»Ñ Ð¸ Ð²Ð¾Ð·Ð½Ð¸ÐºÐ½Ð¾Ð²ÐµÐ½Ð¸ÐµÐ¼ Ð¿ÑÐ¾ÑÐµÑÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½ÑÑ Ð·Ð°Ð±Ð¾Ð»ÐµÐ²Ð°Ð½Ð¸Ð¹ ÑÐ°Ð±Ð¾ÑÐ½Ð¸ÐºÐ¾Ð² ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÐ½Ð¾Ð¹ Ð¾ÑÑÐ°ÑÐ»Ð¸. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÑÐ°ÑÐ¸ÑÑÐ¸ÑÐµÑÐºÐ¸Ñ Ð´Ð°Ð½Ð½ÑÑ Ð¿Ð¾ Ð¿ÑÐ¾ÑÐµÑÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½ÑÐ¼ Ð·Ð°Ð±Ð¾Ð»ÐµÐ²Ð°Ð½Ð¸ÑÐ¼, ÑÐ²ÑÐ·Ð°Ð½Ð½ÑÑ Ñ ÑÑÐ¶ÐµÑÑÑÑ Ð¸ Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð½Ð¾ÑÑÑÑ ÑÑÑÐ´Ð°, Ð° ÑÐ°Ðº Ð¶Ðµ Ð¸ÑÑÐ¾ÑÐ¸ÑÐµÑÐºÐ¸Ñ ÑÐ²Ð¾Ð´Ð¾Ðº Ð¿Ð¾ Ð½Ð°ÑÐºÐµ ÑÑÐ³Ð¾Ð½Ð¾Ð¼Ð¸ÐºÐµ. ÐÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð° Ð¼ÐµÑÐ¾Ð´Ð¸ÐºÐ° Ð¿Ð¾ Ð¿Ð°ÑÐ°Ð»Ð»ÐµÐ»ÑÐ½Ð¾Ð¼Ñ ÑÐ°ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¿ÑÐ¾ÑÐµÑÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½ÑÑ Ð·Ð°Ð±Ð¾Ð»ÐµÐ²Ð°Ð½Ð¸Ð¹.
description: In this paper, the search and the establishment of the relationship between the violation of the ergonomic foundations of the builderâs workplace and the occurrence of occupational diseases of construction workers are described. The analysis of statistics on occupational diseases associated with the severity and intensity of work, as well as historical reports on the science of ergonomics. A technique for the parallel investigation of occupational diseases is proposed.
Flore d'Afrique centrale - Spermatophyta - Irvingiaceae
Creators: name: Gilbert, G.
Publisher: name: Zenodo
Year: 1958
Subjects: Flora
Plants
Identification
Botany
Taxonomy
Systematics
Central Africa
Democratic Republic of the Congo
Rwanda
Burundi

description: PDF version of treatment of Irvingiaceae in Flore d'Afrique centrale series
A Family of Non-commutative geometries
Creators: name: Sinha, Debabrata
name: Giri, Pulak Ranjan
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: It is shown that the non-commutativity in quantum Hall system may get modified. The self-adjoint extension of the corresponding Hamiltonian leads to a family of non-commutative geometries labeled by the self-adjoint extension parameters. We explicitly perform an exact calculation using a singular interaction and show that, when projected to a certain Landau level, the emergent non-commutative geometries of the projected coordinates belong to a one parameter family. There is a possibility of obtaining the filling fraction of fractional quantum Hall effect by suitably choosing the value of the self-adjoint extension parameter.
description: 5 pages, revtex
The transformation of irreducible tensor operators under spherical functions
Creators: name: Jursenas, R.
name: Merkelis, G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 47A80, 33C05

description: The irreducible tensor operators and their tensor products employing Racah algebra are studied. Transformation procedure of the coordinate system operators act on are introduced. The rotation matrices and their parametrization by the spherical coordinates of vector in the fixed and rotated coordinate systems are determined. A new way of calculation of the irreducible coupled tensor product matrix elements is suggested. As an example, the proposed technique is applied for the matrix element construction for two electrons in a field of a fixed nucleus.
description: To appear in Int. J. Theor. Phys
title: 4.-8. März 2019
Creators: name: Stolze, Knut
name: Beier, Felix
name: Müller, Jens
Publisher: name: Gesellschaft für Informatik, Bonn
Year: 2019
Subjects: subject: accelerator
subject: data synchronization
subject: replication
subject: mvcc

description: The IBM Db2 Analytics Accelerator (IDAA) is a state-of-the art hybrid database system that seamlessly extends the strong transactional capabilities of Db2 for z/OS (Db2z) with very fast column-store processing in Db2 Database for Linux, Unix, and Windows. IDAA maintains a copy of the data from Db2z in its backend database. The data can be synchronized in batch with a granularity of table partitions, or incrementally using replication technology for individual rows. In this paper we present the enablement of combining the batch loading of a true subset of a table’s partitions for replicated tables. The primary goal for such an integration is to ensure data consistency. A specific challenge is that no duplicated rows stemming from the two data transfer paths come into existence. We present a robust and yet simple approach that is based on IDAA’s implementation of multi-version concurrency control.
title: Indoor RF localization with algebraic methods
title: Ραδιοσυχνοτικός προσδιορισμός θέσης σε εσωτερικούς χώρους με αλγεβρικές μεθόδους
Creators: name: Πεππας Σπυριδων
Publisher: name: Technical University of Crete
Year: 2021

description: This work investigates the problem of localizing batteryless, passive, ultra-low cost RFID
tags, under the presence of non-white noise that multipath introduces inside buildings. Two recently proposed grid-based methods are utilized to tackle the aforementioned problem with radio signals. The first method is borrowed from the through-the-wall radar imaging community and this thesis adapts it to the case of monostatic interrogation of Gen2 tags, with commercial RFID readers. The method exploits the strength of the received signal (RSSI) and its phase, expressed in a linear system that incorporates the impact of known reflectors.
The second one is a phase-based method, which puts forth a ”differential mitigation” scheme based on maximum likelihood estimation (MLE).
For the first method, it is found that certain ambiguities need to be resolved, relevant
to the wavelength, which can be mitigated based on the fundamental theory of compressive sensing. Specifically, it is observed that the so-called sensing matrix, can lead to a successful reconstruction by properly selecting the carrier frequency or spreading the measurements, with respect to the coherence of its columns or its blocks. As for the second method, a selection of a phase measurement is needed; it is found that if more than one phase measurements are randomly selected, then a more accurate estimate of the target is achieved. According to simulations, the random selection of a subset of the phase measurements as a reference can provide up to 50% improvement, concerning root mean squared error.
This thesis includes both simulation and experimental results using a commercial Gen2
RFID reader at UHF, installed on a robotic platform. Experimental results with the available equipment show that, given static poles, mean absolute localization error in the order of 10 cm for indoor 2D localization is achieved. On the other hand, when the RFID reader is placed on a mobile robotic platform, it is shown that mean absolute localization error in the order of 19cm is possible. Finally, a proof-of-concept is offered, by the modeling of a single reflector, which leads to about 19% 3D localization error improvement, compared to the case where the reflector is ignored. Further examination of this finding perhaps opens a fruitful new research direction.
title: 4.-8. März 2019
Creators: name: Oukid, Ismail
Publisher: name: Gesellschaft für Informatik, Bonn
Year: 2019
Subjects: subject: Non-Volatile Memory
subject: Storage-Class Memory
subject: Indexing
subject: Transaction Processing
subject: Memory Management
subject: Testing
subject: Recovery

description: Storage-Class Memory (SCM) is a novel class of memory technologies that combine the byte addressability and low latency of DRAM with the density and non-volatility of traditional storage media. Hence, SCM can serve as persistent main memory, i.e., as main memory and storage at the same time. In this thesis, we dissect the challenges and pursue the opportunities brought by SCM to database systems. To solve the identified challenges, we devise necessary building blocks for enabling SCM-based database systems, namely memory management, data structures, transaction concurrency control, recovery techniques, and a testing framework against new failure scenarios stemming from SCM. Thereafter, we leverage these building blocks to build SOFORT, a novel hybrid SCM-DRAM transactional storage engine that places data, accesses it, and updates it directly in SCM, thereby doing away with traditional write-ahead logging and achieving near-instant recovery.
Observational evidence for the shrinking of bright maser spots
Creators: name: Richards, A. M. S.
name: Elitzur, M.
name: Yates, J. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The nature of maser emission means that the apparent angular size of an individual maser spot is determined by the amplification process as well as by the instrinsic size of the emitting cloud. Highly sensitive MERLIN radio interferometry images spatially and spectrally resolve water maser clouds around evolved stars. We measured the properties of clouds around the red supergiant S Per and the AGB stars IK Tau, RT Vir, U Her and U Ori, to test maser beaming theory. Spherical clouds are expected to produce an inverse relationship between maser intensity and apparent size, which would not be seen from cylindrical or slab-like regions. We analysed the maser properties, in order to estimate the saturation state, and investigated the variation of observed spot size with intensity and across the spectral line profiles. Circumstellar masers emanate from discrete clouds from about one to 20 AU in diameter depending on the star. Most of the maser features have negative excitation temperatures close to zero and modest optical depths, showing that they are mainly unsaturated. Around S Per and (at most epochs) RT Vir and IK Tau, the maser component size shrinks with increasing intensity. In contrast, the masers around U Ori and U Her tend to increase in size, with a larger scatter. The water masers from S Per, RT Vir and IK Tau are mainly beamed into spots with an observed angular size much smaller than the emitting clouds and smallest of all at the line peaks. This suggests that the masers are amplification-bounded, emanating from approximately spherical clouds. Many of the masers around U Her and U Ori have apparent sizes which are more similar to the emitting clouds and have less or no dependence on intensity, suggesting that these masers are matter-bounded. This is consistent with an origin in flattened clouds and these two stars have shown other behaviour indicating the presence of shocks.
description: 17 pages, 26 figure files, accepted by A&A 2010 Oct 21
Flore d'Afrique centrale - Spermatophyta - Meliaceae
Creators: name: Staner, P.
name: Gilbert, G.
Publisher: name: Zenodo
Year: 1958
Subjects: Flora
Plants
Identification
Botany
Taxonomy
Systematics
Central Africa
Democratic Republic of the Congo
Rwanda
Burundi

description: PDF version of treatment of Meliaceae in Flore d'Afrique centrale series
Experimental perspectives for systems based on long-range interactions
Creators: name: Bachelard, Romain
name: Manos, T.
name: De Buyl, Pierre
name: Staniscia, F.
name: Cataliotti, F. S.
name: De Ninno, G.
name: Fanelli, Duccio
name: Piovella, Nicola
Publisher: name: arXiv
Year: 2010
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The possibility of observing phenomena peculiar to long-range interactions, and more specifically in the so-called Quasi-Stationary State (QSS) regime is investigated within the framework of two devices, namely the Free-Electron Laser (FEL) and the Collective Atomic Recoil Laser (CARL). The QSS dynamics has been mostly studied using the Hamiltonian Mean-Field (HMF) toy model, demonstrating in particular the presence of first versus second order phase transitions from magnetized to unmagnetized regimes in the case of HMF. Here, we give evidence of the strong connections between the HMF model and the dynamics of the two mentioned devices, and we discuss the perspectives to observe some specific QSS features experimentally. In particular, a dynamical analog of the phase transition is present in the FEL and in the CARL in its conservative regime. Regarding the dissipative CARL, a formal link is established with the HMF model. For both FEL and CARL, calculations are performed with reference to existing experimental devices, namely the FERMI@Elettra FEL under construction at Sincrotrone Trieste (Italy) and the CARL system at LENS in Florence (Italy).
Flore d'Afrique centrale - Spermatophyta - Simaroubaceae
Creators: name: Gilbert, G.
Publisher: name: Zenodo
Year: 1958
Subjects: Flora
Plants
Identification
Botany
Taxonomy
Systematics
Central Africa
Democratic Republic of the Congo
Rwanda
Burundi

description: PDF version of treatment of Simaroubaceae in Flore d'Afrique centrale series
Structural phase transition and superlattice misfit strain of RFeAsO (R = La, Pr, Nd and Sm)
Creators: name: Ricci, Alessandro
name: Poccia, Nicola
name: Joseph, B.
name: Barba, Luisa
name: Arrighetti, Gianmichele
name: Ciasca, Gabriele
name: Yan, J. -Q.
name: McCallum, R. W.
name: Lograsso, T. A.
name: Zhigadlo, N. D.
name: Karpinski, J.
name: Bianconi, Antonio
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The tetragonal-to-orthorhombic structural phase transition (SPT) in LaFeAsO (La-1111) and SmFeAsO (Sm-1111) single crystals measured by high resolution x-ray diffraction is found to be sharp while the RFeAsO (R=La, Nd, Pr, Sm) polycrystalline samples show a broad continuous SPT. Comparing the polycrystalline and the single crystal 1111 samples, the critical exponents of the SPT are found to be the same while the correlation length critical exponents are found to be very different. These results imply that the lattice fluctuations in 1111 systems change in samples with different surface to volume ratio that is assigned to the relieve of the temperature dependent superlattice misfit strain between active iron layers and the spacer layers in 1111 systems. This phenomenon that is missing in the AFe2As2 (A=Ca, Sr, Ba) "122" systems, with the same electronic structure but different for the thickness and the elastic constant of the spacer layers, is related with the different maximum superconducting transition temperature in the 1111 (55 K) versus 122 (35 K) systems and implies the surface reconstruction in 1111 single crystals.
description: Accepted for publication in Phys Rev B
title: 4.-8. März 2019
Creators: name: O'Grady, Daniel
Publisher: name: Gesellschaft für Informatik, Bonn
Year: 2019

description: Video game engines can benefit greatly from being tightly coupled with database systems. To make this point and exemplify the similarities in database and game engine technology, we demonstrate a data-driven approach to generate maps for video games, expressed purely in SQL. The demonstration will feature such a live database-supported game that is playable on-site.
Flore d'Afrique centrale - Spermatophyta - Vochysiaceae
Creators: name: Robyns, W.
Publisher: name: Zenodo
Year: 1958
Subjects: Flora
Plants
Identification
Botany
Taxonomy
Systematics
Central Africa
Democratic Republic of the Congo
Rwanda
Burundi

description: PDF version of treatment of Vochysiaceae in Flore d'Afrique centrale series
title: 4.-8. März 2019
Creators: name: Kazempour, Daniyal
name: Kazakov, Maksim
name: Kröger, Peer
name: Seidl, Thomas
Publisher: name: Gesellschaft für Informatik, Bonn
Year: 2019
Subjects: subject: Density-based clustering
subject: Interactive
subject: Exploration
subject: Hyperparameters

description: Clustering algorithms are mostly following the pipeline to provide input data, and hyperparameter values. Then the algorithms are executed and the output files are generated or visualized. We provide in our work an early prototype of an interactive density-based clustering tool named DICE in which the users can change the hyperparameter settings and immediately observe the resulting clusters. Further the users can browse through each of the single detected clusters and get statistics regarding as well as a convex hull profile for each cluster. Further DICE keeps track of the chosen settings, enabling the user to review which hyperparameter values have been previously chosen. DICE can not only be used in scientific context of analyzing data, but also in didactic settings in which students can learn in an exploratory fashion how a density-based clustering algorithm like e.g. DBSCAN behaves.
Pressure-Driven Quantum Criticality in An Iron-Selenide Superconductor
Creators: name: Guo, Jing
name: Chen, Xiaojia
name: Zhang, Chao
name: Guo, Jiangang
name: Chen, Xiaolong
name: Wu, Qi
name: Gu, Dachun
name: Gao, Peiwen
name: Dai, Xi
name: Yang, Lihong
name: Mao, Ho-kwang
name: Sun, Liling
name: Zhao, Zhongxian
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The discovery of superconductivity of about 30 K in iron selenides with very large magnetic moments simulates the examination of completing orders. Here we report a finding of pressure- induced suppression of the superconducting transition temperature Tc and enhancement of the temperature of the resistance hump TH through charge transfer between two iron sites with different occupancies. The activation energy for the electric transport of the high-temperature resistance is observed to go to zero at a critical pressure of 8.7 GPa, at which superconductivity tends to disappear and the semiconductor-to-metal transition takes place. Beyond the critical point, the resistance exhibits a metallic behavior over the whole temperature range studied. All these features indicate the existence of quantum criticality in iron-selenide superconductors.
description: 5 pages, 5 figures
The Atlantic Seascape: A Basin-wide Multivariate Cluster Analysis of Atlantic Seabed Areas
Creators: name: Schumacher, Mia
Publisher: name: Zenodo
Year: 2021

description: Classifications of the marine environment give a comprehensive and easy overview into ocean regimes with similar characteristics and are therefore a helpful tool for sustainable ocean management and conservation. There have been many efforts to define seascapes and habitats by classifications using different approaches applied at a wide range of scales. However, most of the Atlantic-wide classifications available are based on hierarchical schemes with often arbitrary thresholds. This study presents a basin-wide landscape classification of the Atlantic sea floor environment based on global datasets of 9 input variables: bathymetry, slope, terrain ruggedness index, topographic position index, sediment thickness, salinity, dissolved oxygen, temperature and current velocity. To reduce subjectivity within the analysis, we used unsupervised classification techniques on the normalised variables: a K-Means clustering algorithm was run on a random data subset as a first step to identify the cluster centres which were then taken as input for a random forest prediction of the remaining data set. The optimum number of classes was determined based on the Caliński-Harabasz criterion. The result is a map of the Atlantic realm subdivided into 8 seascape domains. Some are clearly defined by geological/geomorphological properties, while others are dominated by hydrographic properties, or by a mixture of both sea floor terrain and water column characteristics. The largest class is the abyssal plain with very deep water and extremely low hydrographic and seasonal change – in contrast to the smallest class which incorporates coastal and river outflow regions that are subject to high seasonal variations and cover a broad range of temperature, oxygen and salinity values. All domains were further compared to a similar existing classification by Harris and Whiteway (2009) and datasets (e.g. seamount locations) to assess to what extent the objectively identified landscape classes are represented in previous classification schemes.
Magnetotransport and Temperature Dependent Resistivity Measurements in Disordered Bi2Te3
Creators: name: NGUYEN, ALEXANDER DAC
Publisher: name: Monash University
Year: 2023
Subjects: Topology
Physical properties of materials

description: Crystalline Bi2Te3 is a material that is known as a topological insulator. Nearly all of the current experimental research on topological insulators have focused exclusively on crystalline topological insulators. This thesis takes samples of Bi2Te3 that are not crystalline and performs measurements to confirm experimentally whether a material can be a disordered topological insulator.
title: 4.-8. März 2019
Creators: name: Möller, Mark Lukas
name: Berton, Nicolas
name: Klettke, Meike
name: Scherzinger, Stefanie
name: Störl, Uta
Publisher: name: Gesellschaft für Informatik, Bonn
Year: 2019

description: We present jHound, a tool for profiling large collections of JSON data, and apply it to thousands of data sets holding open government data. jHound reports key characteristics of JSON documents, such as their nesting depth. As we show, jHound can help detect structural outliers, and most importantly, badly encoded documents: jHound can pinpoint certain cases of documents that use string-typed values where other native JSON datatypes would have been a better match. Moreover, we can detect certain cases of maladaptively structured JSON documents, which obviously do not comply with good data modeling practices. By interactively exploring particular example documents, we hope to inspire discussions in the community about what makes a good JSON encoding.
Flore d'Afrique centrale - Spermatophyta - Dichapetalaceae
Creators: name: Hauman, L.
Publisher: name: Zenodo
Year: 1958
Subjects: Flora
Plants
Identification
Botany
Taxonomy
Systematics
Central Africa
Democratic Republic of the Congo
Rwanda
Burundi

description: PDF version of treatment of Dichapetalaceaein Flore d'Afrique centrale series
Morphological evolution in a strained-heteroepitaxial solid droplet on a rigid substrate: Dynamical simulations
Creators: name: Ogurtani, Tarik Omer
name: Celik, Aytac
name: Oren, Ersin Emre
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A systematic study based on the self-consistent dynamical simulations is presented for the spontaneous evolution of flat solid droplets (bumps), which are driven by the surface drift diffusion induced by the capillary and mismatch stresses, during the development of the Stranski-Krastanow island morphology on a rigid substrate. The physico-mathematical model, which bases on the irreversible thermodynamics treatment of surfaces and interfaces with singularities (Ogurtani, T.O., J. Chem. Phys. 124, 144706, 2006) furnishes us to have auto-control on the otherwise free-motion of the triple junction contour line between the substrate and the droplet without presuming any equilibrium dihedral contract (wetting) angles at the edges. During the development of Stranski-Krastanow islands through the mass accumulation at the central region of the droplet via surface drift-diffusion with and/or without growth, the formation of an extremely thin wetting layer is observed. . This wetting layer has a thickness of a fraction of a nanometer and covers not only the initial computation domain but also its further extension beyond the original boundaries. Above a certain threshold level of the mismatch strain and/or the size (i.e. volume) of the droplets, which depends on the initial physicochemical data and the aspect ratio (i.e., shape) of the original droplet, the formation of the multiple islands separated by the shallow wetting layers is also observed
description: Quantum dots, Instability of surface morphology, Interfaces and surface, Non-equilibrium thermodynamics
Flore d'Afrique centrale - Spermatophyta - Burseraceae
Creators: name: Troupin, G.
Publisher: name: Zenodo
Year: 1958
Subjects: Flora
Plants
Identification
Botany
Taxonomy
Systematics
Central Africa
Democratic Republic of the Congo
Rwanda
Burundi

description: PDF version of treatment of Burseraceae in Flore d'Afrique centrale series