bluuebunny/crossref_metadata_2025 huggingface dataset:
Aproximación a una estética del cine fantástico
Authors: Puig Peñalosa Xavier
Published: May 2019

Introducción una vez más en el maravilloso mundo del Séptimo Arte, desentrañando ese género cinematográfico que es el fantástico.
Introduction. Debates on Collective Bargaining in a Time of Economic Crisis
Authors: López López Julia
Published: May 2019

Collective Labor Law as a mechanism of agency through workers representation has been challenged more than ever during recent last decades. The policies that have adjusted labor rights to new scenarios of economic policies have impacted collective bargaining structures and contents. The debates on centralization and de-centralization, workers participation, unions and workers strategies to countervail the erosion of labor rights have been part of the social agenda. Among the debates one very important one involves the study of the cases of the Basque Country and Catalonia. Their models of collective bargaining allow us to examine different strategies to achieve social goals through collective action with more successful results in the Basque case.
Collective Bargaining in the Renewed Spanish Labour Law
Authors: Rodríguez-Piñero Royo Miguel
Published: May 2019

As in any other advanced democratic State, collective bargaining plays a central role in Spanish labour relations. Latest labour law reforms during the world financial crises have substantially affected this institution, and rules governing collective bargaining have changed profoundly, coherently with the general objective to increase employers’ ability to change its contents and to avoid the so-called “rigidification” of working conditions. Its role is formaly more important, but an objective analysis of this new regulations and its impact on Spanish labour relations leads to a completely different conclusion. It has been converted into an instrument of economic policy, with weaker collective agreements, allowing a general wage devaluation. This experience shows the vulnerability of collective labour law to external pressures. The temptation of using instruments of social dumping can be strong, producing changes in collective labour law that impose a model of collective bargaining unbalanced towards management’s interests.
Stabilising Collective Agreements in Continental Europe
Authors: De le Court Alexandre
Published: May 2019

Most continental European legal systems where normative value is conferred on collective bargaining agreements also include a legal mechanism, known as after-effects, whereby the content of such agreements survives after they expire. After-effects can be regulated by specific legislative provisions. Where such provisions are absent, jurisprudential constructions based on the application of general principles of contract law have been applied instead. This comparative study reveals an important convergence between these models, in terms of both the legal techniques adopted and in the objectives pursued. The study also reveals that states share common concerns around maintaining a certain balance between negotiating parties, whether through consolidating the respective models of collective bargaining or via correcting dysfunctions introduced by emergency measures. Those solutions can be embedded in the international definition of the right to collective bargaining, revealing the importance of a holistic vision on regulations underpinning the European collective bargaining model.
Baicalein Exerts Anticancer Effect in Nasopharyngeal Carcinoma In Vitro and In Vivo
Authors: Guo Jiandong , You Huihua , Li Dong
Published: May 2019

Baicalein, an active ingredient separated from Astragalus membranaceus, has shown its anticancer ability in various cancers. However, its effect on nasopharyngeal carcinoma has not been explored yet. The present study aimed to investigate the effect of baicalein on the growth,
proliferation, apoptosis, and cell cycle of human nasopharyngeal carcinoma cells, as well as transplanted nude mouse xenograft. The results showed that baicalein inhibited the growth and proliferation of CNE1 and CNE2 cells in a time- and concentration-dependent manner. It also caused a significant
increase in the number of cells in the G0/G1 phase and a decrease in the G2/M phase, thereby reducing the number of cells entering mitosis and inhibiting the proliferation of tumor cells. Baicalein also significantly induced apoptosis of CNE1 and CNE2 cells.
Western blots showed that baicalein decreased the expression of Bcl-xl and Mcl-1 and increased the expression of Bax, Bad, and caspase 3, 8, and 9. In CNE1- and CNE2-transplanted tumors of mice, baicalein significantly inhibited tumor growth. In conclusion, baicalein could inhibit the growth
and proliferation of human nasopharyngeal carcinoma cells, change their cell cycle, and induce apoptosis. Baicalein also effectively limits both CNE1- and CNE2-transplanted tumors in nude mice. Downregulation of Bcl-xl and Mcl-1 proteins and upregulation of Bax and Bad may be involved in the
mechanism.
Comparison of the Effects of Albumin 5% versus Ringer's Lactate on Blood Loss and Coagulation after Vascular Surgery Using Thromboelastography
Authors: Mohamed Ahmed Abdalla , Elsharkawi Nadia Gameel , Zaid Osama Ismail , Mohamed Ahmed Farag , Mohamed Nashwa Nabeel , Wadeed Michael Wahib , Tawfik Adham Feteha , Elkatatny Amr Abdelmonam Abdelaziz Mostafa
Published: May 2019

AIM: Comparing the effects of Albumin 5% versus Ringer's lactate on blood loss and coagulation after vascular surgery using
METHODS: In this randomised study, 60 patients, aged (18-60 years) ASA physical status (I-III) undergoing vascular surgery were included in the study and randomly allocated into two groups using a random number generator, to receive either Human albumin or Ringer lactate after obtaining written informed consent. Group A received 1-2 ml per minute of human albumin 5% combined with normal saline (0.9%). Group B received Ringer's lactate only as of the main solution. Variables were measured after administration of fluids as postoperative measures. The amount of blood needed for testing was 4 ml drawn before the operation and at the end of surgery with a citrate tube (blue tube) from the venous line or using a regular needle. The standard time of 15 minutes was considered to begin processing.
RESULTS: There was no statistically significant difference observed between both groups regarding demographic data, surgical wound drainage, haemoglobin level, hematocrit level and coagulation profile. Regarding ROTEM thermoelectrometry variables showed that there was no statistically significant difference was found between the two groups In-TEM variables (Ex-TEM Clotting time, TEM Clot Formation Time) but In-TEM Alpha Angel measured in degrees showed a Statistically significant difference between the two groups. P < 0.001 and Ex-TEM Maximum Clotting Firmness MCF values measured in mm, there was a statistically significant difference between the two groups P = 0.045.
CONCLUSION: This study concluded that the use of human albumin (5%) in vascular surgeries before reaching the trigger point for blood transfusion didn’t improve blood loss or coagulation profile compared to the use of ringer lactate only. Therefore, ringer lactate can be used as a good replacement for human albumin. Ringer lactate is readily available and inexpensive while human albumin may be costly.
Cerebellar Cryptococcal Abscess in HIV-Negative Patient: A Case Report and Literature Review
Authors: Sriwidyani Ni Putu , Dewi Ni Luh Gede Sagita , Golden I Nyoman , Widyadharma I Putu Eka
Published: May 2019

BACKGROUND: Cryptococcus is a common cause of opportunistic infection in HIV-positive patients. While the incidence of this disease has decreased in AIDS-associated cases, cryptococcal infection in immune-competent person has been increased.
CASE PRESENTATION: We report a case of cryptococcosis and literature review of pathogenesis and clinical aspects of cryptococcal central nervous system infection. A 64-year-old man, from Flores, complaining of severe headache since a few days before admitted to hospital. Head MRI showed multiple hypointense lesions in the left cerebellar hemisphere, suspected abscess or metastatic process. HIV testing was non-reactive. Surgery was performed, and microscopic evaluation revealed multiple abscesses containing PAS-positive budding yeasts consistent with cryptococcal abscesses.
CONCLUSION: Cryptococcosis rarely occur in immunocompetent patients. The clinical manifestation depends on pathogenic factors of pathogen and host factor. Treatment is with the administration of antifungal drugs, and the prognosis mostly depends on the underlying disease.
Problem-based learning approach enhances the problem solving skills in Chemistry of high school students
Authors: Valdez Joseph , Bungihan Melfei
Published: May 2019

The study aimed to investigate the effectiveness of problem-based learning (PBL) approach in enhancing the problem solving skills in Chemistry of Grade 9 students in a public high school in the Philippines. The level of problem solving skills of the students in the non-PBL and PBL group before and after their exposure to non-PBL and PBL approaches was determined respectively. The comparison of their levels before and after the intervention was done to determine the effectiveness of the non-PBL and PBL approaches. Then comparison of the effectiveness of non-PBL and PBL approach was assessed. Using the descriptive-comparative and pretest-posttest experimental design in processing the data from 96 students, the following revelations were obtained: (1) the level of problem solving skills before and after their exposure to non-PBL approach is generally very low; (2) the level of problem solving skills was initially very low but was comparatively increased to low after exposure to PBL; (3) there was a significant difference in the level of problem solving skills of the students in the PBL group; (4) between these two approaches in this study, the PBL approach of teaching the chemistry concepts to Grade 9 students was proven more effective than the non-PBL approach.
Pedagogical guidelines for the creation of adaptive digital educational resources: A review of the literature
Authors: Rozo Hugo , Real Miguel
Published: May 2019

The present article constitutes a systematic review of the literature with the objective of identifying the appropriate elements that must be taken into account when designing and creating adaptive digital educational resources. The methodological process was rigorous and systematic, through a deep search of literature, in which the texts related to the object of study were identified, selected, evaluated and analyzed. It is concluded from the analysis to the documentary corpus, that the different approaches found, configure a route, for the conceptualization of what should be a digital educational resource as an element that contributes to learning. In this sense, it is proposed an exemplary model user that considers experiences, interests and tastes; thus, allowing strengthen the particularities of students and enhancing the learning experience.
Functional Rating for Knee Arthroplasty: Comparison of Three Scoring Systems
Authors: Liow Raymond Y L , Walker Karen , Wajid Mohammad A , Bedi Gurinder , Lennox Catherine M E
Published: May 2019

Abstract

This study evaluated the reliability of three rating systems for total knee arthroplasty. Twenty-nine patients were assessed by six observers with the American Knee Society Score, the British Orthopaedic Association Score, and the Oxford 12-item questionnaire. The inter- and intraobserver variations were calculated for the American Knee Society Score and the British Orthopaedic Association Score, as was the reproducibility of the Oxford 1 2-item questionnaire. Components of the scores were evaluated for agreement using Kappa statistics. The British Orthopaedic Association Score had smaller interobserver variation compared to the American Knee Society Score, and the greatest reproducibility of the three systems. This was attributed to the equal weighting of its component variables. The Oxford 1 2-item questionnaire, a self-administered questionnaire that eliminates interobserver error, emerged as the most reliable system. Observer experience affected the reliability of the American Knee Society Score and the British Orthopaedic Association Score. Subjective variables were more reliable and reproducible than the objective components.
The entomological exhibition of a Science museum and its contributions to non-formal Education
Authors: Ribeiro Nathália Cristina Gonzalez , Sant'Ana Débora De Mello Gonçales
Published: May 2019

The Insecta Class is the most diverse group of animals on the planet. A big part of this composition is available in the collections of Natural History Museums, being essential for researches and diffusion actions involving a specialized and lay public. This paper aimed to verify the importance of an entomological exhibition of a Science museum for the acquisition of new knowledge and conception change regarding insects. To this end, 128 fourth-graders from elementary school were asked to draw an insect and write a brief description of it in relation to their knowledge about insects. Then, they visited an entomological exhibition, and a week later, using the "stimulated recollection method", they made a new drawing and description. The extracted data were organized in categories and statistically analyzed. Significant changes were observe regarding the children’s knowledge and concepts on insects in most of the analyzed aspects, such as the decrease of drawings and descriptions of animals belonging to other taxonomic groups and an increase on correct descriptions of concepts.
Study and Evaluation of Changqing Crude Oil Antiwaxing Agent
Authors: Luo Qing Mei , Yang Jian , She Li Jun , Wan Wen Jie , Ma Yun , Gu Xue Fan , Chen Gang
Published: May 2019

In order to solve the problems of wax deposit, this study evaluated the effect of wax cleaning agent used in Changqing and adjusted its formulation. The results showed that the wax removal rate of oil based dewaxing agent was slightly higher than that of emulsion dewaxing agent for crude oil with low salt content. It is possible that the emulsion dewaxing agent contains a certain amount of mutual solvents, which improves its wetting ability at the oil-water interface and makes the oil and water dissolve each other. So that the wax deposit surface from hydrophilic hydrophobic to hydrophilic hydrophobic, forming anti-wax film to prevent wax deposition. Therefore, the wax removal ability of 1#, 3# oil wax is higher than that of oil base wax dewaxing agent.
Study on Properties of a Novel Flame Retardant Epoxy Curing Agent
Authors: Peng Yong Li , Zhang Can , Zhuo Ni An
Published: May 2019

Using 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10 oxide (DOPO) and N-methylol acrylamide as the main raw materials, the curing agent DOPO-NMA was synthesized. The flame retardant curing agent DOPO-NMA and E-51 epoxy resin (EP) were then cured to obtain epoxy resin E-51 system, and its flame retardancy, thermal stability and mechanical properties were studied. The results showed that the tensile, bending and impact strength of the cured system decreased with the increase of phosphorus mass fraction in the resin system, and the flame retardancy rating, limiting oxygen index (LOI) and char yield at 700°C increased with the increase of phosphorus mass fraction in the resin system.
Research on Gas Nitriding Technology Catalyzed by Rare Earth for 40CrNiMoA Alloy Steel
Authors: Li Wan Jun , Li Xiao Xia
Published: May 2019

A kind of gas nitriding method catalyzed by rare earth for 40CrNiMoA alloy steel was researched in this article. Effect of temperature on surface hardness of gas nitriding method catalyzed by rare earth, change law of layer depth with time at 500 °C were carried out and compared with normal gas nitriding. Based on these researches, gas nitriding method catalyzed by rare earth was optimized. The results show that gas nitriding catalyzed by rare earth can not only increase the nitriding speed, but also enhance the surface hardness of the nitriding layer. Using three - stage gas nitriding method catalyzed by rare earth and after 40 hours, the samples can meet the need of nitrided layer depth no less than 0.5mm, surface vickers hardness no less than 600.
Analysis on Live Load Distribution Factors of Widened Hollow Core Slab Bridges
Authors: Zhang Li Fang , Wang Ying , Lei Ying Ge , Chang Yun
Published: May 2019

There are some studies on live load distribution factors(LLDF) of hollow core slab bridges which mainly consider the influence of connecting method and rigidity, while the effects of span length and skew angle have not been fully involved. Influenced by the trend of road and river, the hollow core slab bridges are often skewed with rivers. So it is essential to study the span length and skew angle effects in bridge widening. Based on a highway widening project, some representative hollow core slab bridges are selected for widening analysis. Theoretical method and finite element method are used to analysis the LLDF of slab bridges before and after widening. Finite element method(FEM) can give high precision in LLDF calculating. The influences of span length, connecting stiffness and skew angle are studied. The result indicates that no matter before or after widening the LLDF become smaller with the increase of span length. After widening, the LLDF of the half slabs near to the widening seam reduce obviously and with the span length increases the variation becomes more obviously. The connecting stiffness brings small influence to the LLDF in hollow core slab bridges. And with the increase of skew angle, the LLDF of the new side slab changes obviously, but the variation of LLDF of original slabs is not obviously according to skew angle.
Zn-Assisted Liquid Metal Embrittlement of 980MPa Grade Advanced High Strength Steels
Authors: Jiang Ying Hua , Zhou Jian , Fu Can , Bai Xue
Published: May 2019

Recently, the weight reduction of automotive body and crash safety become much more important factors. In addition, the corrosion resistance must be ensured for any material used in a structural part of automotive components. In an effort to satisfy these requirements, zinc-coated high strength steels have been developed. However, challenges to resistance spot weldability of zinc-coated high strength steel such as liquid metal embrittlement (LME) have emerged. In this study, the high temperature tensile test was conducted for 980MPa DP steel. And resistance spot welding was conducted for 980MPa DP steel and CP steel. The results show that the fracture behavior during tensile test are influenced by the temperature and strain rate. Cracks were formed on the weld surface of the DP steel after welding.
Simulation and Analysis on Fiber Reinforced Rubber Matrix Sealing Composite Based on Cohesive Zone Model
Authors: Yu Xiao Ming , Zhang Bin , Shen Jia Min , Li Yue , Liu Sai Sai
Published: May 2019

A finite element model on the single fiber pull-out test of short fiber reinforced rubber matrix sealing composites (SFRC) were established. The effects of the interphase properties on the interfacial stress distribution and initial debonding strain are investigated based on the cohesive zone model (CZM). The influences of interphase thicknesses and elastic modulus on the interfacial debonding behavior of SFRC are obtained. The results show that the interfacial initial debonding strain increases with the increasement of interphase thickness, and it decreases with the increasement of interphase elastic modulus. An interphase thickness of 0.4 μm and an interphase elastic modulus of about 750 MPa are optimal to restrain the initiation of the interfacial debonding.
Слои в графе $k$-кратной итерации равновероятного случайного отображения
Authors: Mironkin Vladimir Olegovich
Published: May 2019

Изучаются вероятностные характеристики графа $k$-кратной итерации равновероятного случайного отображения конечного множества.
Получены точные выражения и оценки для распределений расстояний вершин от циклов. Приведены формулы для математических ожиданий чисел вершин, находящихся на заданных расстояниях от циклов, и для функции распределения высоты случайной вершины.
A bivariable coupling model for river channel routing developed from the flow continuity equation and its application
Authors: Si Wei , Bao Weimin , Wang Senlin , Cui Yanping , Niu Zhixing , Yu Hui
Published: May 2019

In this study, a bivariable coupling model for river channel routing is presented. The proposed model is developed from the Priessmann 4-point implicit differential scheme with a weight coefficient of river flow continuity equation. It is based on the transformation of two different expression forms of river channel storage equation. Furthermore, we consider the impact of lateral inflow along the study river channel from another perspective. In this paper we deduct lateral inflow from the lower section instead of adding lateral inflow to the upper section. In order to be representative of geographical range, river channel characteristics, flood magnitude, hydraulic characteristics and time, the proposed model is tested in 38 river channels of 6 river systems in China by using observed data during flood season. The rationality of model structure and the validity of model simulation are examined comprehensively. Comparison between the proposed model and Muskingum model shows that the proposed model can improve the simulation accuracy. The results show that the simulation accuracy and stability of the bivariable coupling model is much better than that of the Muskingum model.
Development of an empirical formula for estimation of bioretention outflow rate
Authors: Gulbaz Sezar , Kazezyılmaz-Alhan Cevza Melek , Temür Rasim
Published: May 2019

Urbanization of a watershed affects both surface water and groundwater resources. When impervious area increases, the excess runoff and volume of water collected at the downstream end of the watershed also increases, due to the decrease in groundwater recharge, depression storage, infiltration and evapotranspiration. Low-impact development (LID) methods have been developed in order to diminish adverse effects of excess stormwater runoff. Bioretention is one of the LID types which is used to prevent flooding by decreasing runoff volume and peak flow rate, and to manage storm-water by improving water quality. In this study, an empirical formula is derived to predict the peak outflow out of a bioretention column as a function of the ponding depth on bioretention, hydraulic conductivity, porosity, suction head, initial moisture content and height of the soil mixture used in the bioretention column. Coefficients of the empirical formula are determined by using metaheuristic algorithms. For analyses, the experimental data obtained from rainfall-watershed-bioretention (RWB) system are used. The reliability of the empirical formula is evaluated by calculating the absolute per cent error between the peak value ofthe measured outflow and the calculated outflow of the bioretention columns. The results show that the performance of the empirical formula is satisfactory.
Urinals for water savings and nutrient recovery: a feasibility study
Authors: Chipako TL , Randall DG
Published: May 2019

This research investigates the feasibility of implementing waterless urinals at a public university in Cape Town, South Africa. Two analytical approaches were adopted to assess the feasibility of the proposed systems: a social study in the form of an online survey and an economic evaluation of four separate water savings and nutrient removal systems. In terms of the online survey, 87% of respondents claimed they would use urine- diverting technology and 79% stated they would eat food that was grown using urine-recycled phosphorus as fertilizer. It was found that merely reducing the number of times a urinal could be flushed to 3 times per day could save approximately 18 ML of water annually. Additionally, the University of Cape Town requires 3 600 kg of fertilizer for its sports fields, while the urine collected in waterless systems has the potential to produce 6 700 kg of fertilizer. This work has shown that a significant amount of water can be saved by installing waterless urinals in public institutions such as a university. It also shows that there is potential to recover valuable resources from our ‘waste’ streams, thus closing various nutrient cycles through on-site fertilizer production.
Mediação explícita e comportamento de busca da informação em Bibliotecas Universitárias
Authors: Silva Sueli Alves , Cavalcante Luciane de Fátima Beckman
Published: May 2019

Objetivo: Aborda a possível influência da mediação da informação sobre o comportamento de busca da informação na biblioteca universitária. O ato de mediar informações, principalmente a mediação explícita, é uma das ações que pode colaborar na aproximação da biblioteca com a comunidade acadêmica para a apropriação da informação pelas práticas dos mediadores. Nesse sentido, teve como objetivo geral analisar na biblioteca universitária ações de mediação explícita da informação que possam auxiliar no comportamento de busca da informação. Para tanto, foi empregado um estudo de natureza qualitativa, exploratória e descritiva, com apoio de uma pesquisa bibliográfica, adotando como procedimento de coleta de dados a entrevista semiestruturada com onze bibliotecários das Bibliotecas da Universidade Estadual Paulista Júlio Mesquita Filho (UNESP), dos campi de Marília e Rio Claro.Método: Os dados foram analisados pelo método da Análise de Conteúdo, aplicando a técnica de Análise Categorial (AC).Resultados: Os resultados demonstraram que os bibliotecários entrevistados desconhecem a mediação explícita em sua teoria, mas a praticam em seu dia a dia. Foi possível verificar, ainda, que na visão dos entrevistados os treinamentos e orientações oferecidos aos usuários facilitam o ingresso, permanência e autonomia do usuário na biblioteca, além de considerarem relevante o papel do bibliotecário para o desenvolvimento do comportamento de busca da informação.Conclusões: Concluiu-se que, no ambiente das bibliotecas universitárias, os bibliotecários, dentre as atividades desenvolvidas, atuam como mediadores e que, em suas ações de mediação explícita, podem contribuir ao desenvolvimento do comportamento de busca da informação no ambiente pesquisado.
Comunicação Científica Visual: abordagens na Ciência da Informação
Authors: De Araujo Santos Ana Claudia , Carvalho Alves Edvaldo
Published: May 2019

O presente artigo apresenta uma discussão acerca da comunicação científica realizada com base em registros visuais, conceituada como comunicação científica visual. Para tal abordagem, realizou-se uma revisão integrativa buscando identificar, a partir de um levantamento na Base de Dados Referenciais de Artigos e Periódicos em Ciência da Informação (BRAPCI), na Base de Dados de Teses e Dissertações do Instituto Brasileiro de Informação em Ciência e Tecnologia (BDTD/IBICIT) e nos anais do Encontro Nacional de Pesquisa em Ciência da Informação (ENANCIB), a compreensão acerca desse conceito e de como a comunicação científica visual é discutida na área da Ciência da Informação (CI), com ênfase nos documentos iconográficos. Os resultados levantados evidenciam que a comunicação realizada nessa área do conhecimento se restringe aos documentos escritos e textuais, com ênfase na análise bibliométrica de periódicos científicos. Assim, tem-se como consideração final que há uma incipiência de trabalhos que contemplam os registros visuais como sendo portadores de um dado conhecimento científico que possibilita a divulgação de informações científicas sobre uma determinada temática. Destarte, o trabalho inicial realizado possibilita um debate que verse sobre a referida temática contribuindo para uma discussão mais abrangente no que concerne à publicização da produção de informações científicas.
Localizador de especialistas: uma plataforma tecnológica para a identificação e o compartilhamento do conhecimento dos interagentes de uma unidade de informação
Authors: Lazzari Letícia , Juliani Jordan Pauleski , Monteiro Gabriela , Fontes Sandra Regina
Published: May 2019

Objetivo: Caracteriza-se como um estudo focado no desenvolvimento de um serviço tecnológico para bibliotecas universitárias baseado nos preceitos da biblioteca do futuro. Busca contribuir com o melhor aproveitamento do capital intelectual existente entre os membros da comunidade acadêmica, evitando assim o desperdício do recurso institucional na contratação de especialistas externos e melhorando a eficiência da instituição com a aproximação de grupos de interesse, possibilitando assim o desenvolvimento de trabalhos colaborativos. Objetiva relatar a experiência do desenvolvimento de um protótipo tecnológico denominado Localizador de Especialistas, concebido como um possível serviço a ser ofertado pelas bibliotecas universitárias à sua comunidade acadêmica. Método: Explicativa e descritiva quanto aos seus objetivos, a presente pesquisa aplicada utilizou-se do estudo de caso como procedimento técnico, pois buscou analisar profunda e exaustivamente as tecnologias disponíveis para proposição de um novo serviço e desenvolvimento do protótipo tecnológico. Resultados: Foram definidos os requisitos funcionais necessários para o funcionamento do sistema, posteriormente apresentou-se a ferramenta tecnológica desenvolvida por meio de um software de código aberto pré-existente e por fim a proposta de operacionalização do serviço. Conclusões: Conclui-se que o Localizador de Especialistas é um serviço viável para implementação em bibliotecas universitárias, pois é de baixo custo e rápida execução, extrapolando os serviços tradicionais da biblioteca e contribuindo para a construção coletiva e colaborativa do conhecimento.
Vale a pena investir em imóveis? Uma análise da valorização do metro quadrado no setor imobiliário do Espírito Santo
Authors: Campani Carlos Heitor , Silva Emmanuel Marques
Published: May 2019

De 2006 a 2013, o mercado imobiliário brasileiro apresentou um crescimento vertiginoso. Entretanto, os investimentos em imóveis têm suscitado questionamentos polêmicos quanto à rentabilidade do negócio, ainda mais quando comparado ao risco assumido, muitas vezes não considerado por investidores. Neste contexto, este trabalho teve como proposta analisar a valorização do metro quadrado em imóveis localizados nas principais cidades do Espírito Santo entre os anos de 2006 e 2013 (pré-crise imobiliária). A metodologia utilizada foi descritiva e exploratória, com análise dos dados e apresentação da valorização do metro quadrado em investimentos imobiliários para cada região estudada. Os resultados sugerem que somente a valorização do imóvel não o torna, em geral, um bom investimento. Ao contrário do senso comum, a evolução do metro quadrado imobiliário apresentou maior grau de incerteza quando comparado à taxa SELIC, além de muitas vezes uma valorização menor que a mesma. Se os anos de 2014 a 2016 fossem considerados, tais resultados teriam sido ainda mais dramáticos.
Verification of anthropogenic VOC emission inventory through ambient measurements and satellite retrievals
Authors: Li Jing , Hao Yufang , Simayi Maimaiti , Shi Yuqi , Xi Ziyan , Xie Shaodong
Published: May 2019

Abstract. Improving the accuracy of the anthropogenic volatile
organic compound (VOC) emission inventory is essential for reducing air
pollution. In this study, we established an emission inventory of
anthropogenic VOCs in the Beijing–Tianjin–Hebei (BTH) region of China for 2015
based on the emission factor (EF) method. Online ambient VOC
observations were conducted in one urban area of Beijing in January, April,
July, and October, which, respectively, represented winter, spring, summer,
and autumn in 2015. Furthermore, the developed emission inventory was
evaluated by a comprehensive verification system based on the measurements
and satellite retrieval results. Firstly, emissions of the individual
species of the emission inventory were evaluated according to the ambient
measurements and emission ratios versus carbon monoxide (CO). Secondly, the
source structure of the emission inventory was evaluated using source
appointment with the Positive Matrix Factorization (PMF) model. Thirdly, the
spatial and temporal distribution of the developed emission inventory was
evaluated by a satellite-derived emission inventory. According to the
results of the emission inventory, the total anthropogenic VOC emissions in
the BTH region were 3277.66 Gg in 2015. Online measurements showed that the
average mixing ratio of VOCs in Beijing was approximately 49.94 ppbv in 2015,
ranging from 10.67 to 245.54 ppbv. The annual emissions for 51 of
56 kinds of non-methane hydrocarbon species derived from the measurements
agreed within ±100 % with the results of the emission
inventory. Based on the PMF results and the emission inventory, it is
evident that vehicle-related emissions dominate the composition of
anthropogenic VOCs in Beijing. The spatial correlation between the emission
inventory and satellite inversion result was significant (p<0.01)
with a correlation coefficient of 0.75. However, there were discrepancies
between the relative contributions of fuel combustion, emissions of
oxygenated VOCs (OVOCs), and halocarbons from the measurements and
inventory. To obtain a more accurate emission inventory, we propose the
investigation of the household coal consumption, the adjustment of EFs based
on the latest pollution control policies, and the verification of the source
profiles of OVOCs and halocarbons.
NALPS19: Sub-orbital scale climate variability recorded in Northern Alpine speleothems during the last glacial period
Authors: Moseley Gina E. , Spötl Christoph , Brandstätter Susanne , Erhardt Tobias , Luetscher Marc , Edwards R. Lawrence
Published: May 2019

Abstract. Sub-orbital-scale climate variability of the last glacial period provides important insights into the rates that the climate can change state, the mechanisms that drive that change, and the leads, lags and synchronicity occurring across different climate zones. Such short-term climate variability has previously been investigated using speleothems from the northern rim of the Alps (NALPS), enabling direct chronological comparisons with highly similar shifts in Greenland ice cores. In this study, we present NALPS19, which includes a revision of the last glacial NALPS δ18O chronology over the interval 118.3 to 63.7 ka using eleven,newly-available, clean, precisely-dated stalagmites from five caves. Using only the most reliable and precisely dated records, this period is now 90 % complete and is comprised of 15 stalagmites from seven caves. Where speleothems grew synchronously, major transitional events between stadials and interstadials (and vice versa) are all in agreement within uncertainty. Ramp-fitting analysis further reveals good agreement between the NALPS19 speleothem δ18O record, the GICC05modelext NGRIP ice-core δ18O record, and the Asian Monsoon composite speleothem δ18O record. In contrast, NGRIP ice-core δ18O on AICC2012 appears to be considerably too young. We also propose a longer duration for the interval covering Greenland Stadial (GS) 22 to GS-21.2 in line with the Asian monsoon and NGRIP-EDML. Given the near-complete record of δ18O variability during the last glacial period in the northern Alps, we offer preliminary considerations regarding the controls on mean δ18O. We find that as expected, δ18O values became increasingly more depleted with distance from the oceanic source regions, and increasingly depleted with increasing altitude. Exceptions were found for some high-elevation sites that locally display δ18O values that are too high in comparison to lower-elevation sites, thus indicating a summer bias in the recorded signal. Finally, we propose a new mechanism for the centennial-scale stadial-level depletions in δ18O such as "pre-cursor" events GS-16.2, GS-17.2, GS-21.2, and GS-23.2, as well as the "within-interstadial" GS-24.2 event. Our new high-precision chronology shows that each of these δ18O depletions occurred shortly following rapid rises in sea level associated with increased ice-rafted debris and southward shifts in the Intertropical Convergence Zone, suggesting that influxes of meltwater from moderately-sized ice sheets may have been responsible for the cold reversals causing the AMOC to slow down similar to the Preboreal Oscillation and Older Dryas deglacial events.
Shallow landslides modeling using a particle finite element model with emphasis on landslide evolution
Authors: Wang Liang , Zhang Xue , Tinti Stefano
Published: May 2019

Abstract. Numerical modelling is a powerful tool to study the mechanism of landslides and constructs the foundation of many physically-based assessment methods applied to natural hazards. Usually, numerical analyses of landslides are carried out on the failure mechanism and on the propagation process separately. With the advantage of dealing with large deformation problems, the particle finite element method (PFEM), that is the particle extension of the traditional FEM, has the capability of simulating the entire evolution of the landslide from the generation to the deposition phase. To figure out the difference between a unified PFEM simulation and the usually adopted approaches that separate failure mechanism (static analysis) and run-out analysis (dynamic analysis), we implement a PFEM code that is applied first to a simple homogeneous slope model. Numerical results reveal that under the so-called critical condition the landslide comes to a stop with a slight modification of the original profile, while its profile is drastically changed if strength reduction is further applied. To test the capability of our model, we choose the 2013 Cà Mengoni landslide, northern Apennines, Italy, as a case study, since it behaved as if it were formed by homogeneous material. In virtue of the back-analysis of the run-out distance that we perform by using different material strength parameters, we show that the PFEM model is able to capture the variation of the observed landslide profile, and contributes to the understanding of the dynamics of the whole sliding process.
Evaluation of Unified Model Rainfall Forecasts over the Western Ghats and North East states of India
Authors: Sharma Kuldeep , Kumar Sushant , Ashrit Raghavendra , Milton Sean , Mitra Ashis K. , Rajagopal Ekkattil N.
Published: May 2019

Abstract. Prediction of heavy rains associated with orography is still a challenge, even for the most advanced state-of-art high-resolution Numerical Weather Prediction (NWP) modeling systems. The aim of this study is to evaluate the performance of UK Met Office Unified Model (UM) in predicting heavy and very heavy rainfall exceeding 80th and 90th percentiles which occurs mainly due to the forced ascent of air parcels over the mountainous regions of the Western Ghats (WGs) and North East (NE) – states of India during the monsoon seasons of 2007 to 2018. Apart from the major upgrades in the dynamical core of UM from New Dynamics (ND) to Even Newer Dynamics for General Atmospheric Modeling of the environment (ENDGame), the horizontal resolution of the model has been increased from 40 km and 50 vertical levels in 2007 to 10 km and 70 vertical levels in 2018. In general, it is expected that the prediction of heavy rainfall events improves with increased horizontal resolution of the model. The evaluation based on verification metrics, including Probability of Detection (POD), False Alarm Ratio (FAR), Frequency Bias (Bias) and Critical Success Index (CSI), indicate that model rainfall forecasts from 2007 to 2018 have improved from 0.29 to 0.38 (CSI), 0.45 to 0.55 (POD) and 0.55 to 0.45 in the case of FAR over WGs for rainfall exceeding the 80th percentile (CAT-1) in the Day-1 forecast. Additionally, the Symmetric Extremal Dependence Index (SEDI) is also used with special emphasis on verification of extreme and rare events. SEDI also shows an improvement from 0.47 to 0.62 and 0.16 to 0.41 over WGs and NE-states during the period of study, suggesting an improved skill of predicting heavy rains over the mountains. It has also been found that the improvement is consistent and comparatively higher over WGs than NE-states.
Improved methodologies for Earth system modelling of atmospheric soluble iron and observation comparisons using the Mechanism of Intermediate complexity for Modelling Iron (MIMI v.1.0)
Authors: Hamilton Douglas S. , Scanza Rachel A. , Feng Yan , Guinness Joe , Kok Jasper F. , Li Longlei , Liu Xiaohong , Rathod Sagar D. , Wan Jessica S. , Wu Mingxuan , Mahowald Natalie M.
Published: May 2019

Abstract. Herein, we present the description of the Mechanism of Intermediate complexity for Modelling Iron (MIMI). This iron processing module was developed for use within Earth system models and has been updated within a modal aerosol framework from the original implementation in a bulk aerosol model. MIMI simulates the emission and atmospheric processing of two main sources of iron in aerosol prior to deposition: mineral dust and combustion processes. Atmospheric dissolution of insoluble to soluble iron is parametrized by an acidic interstitial reaction and a separate in-cloud reaction scheme based on observations of enhanced aerosol iron solubility in the presence of oxalate. Updates include a more comprehensive treatment of combustion iron emissions, improvements to the iron dissolution scheme, and an improved physical dust mobilization scheme. An extensive dataset consisting predominantly of cruise-based observations was compiled to compare to the model. The annual mean modelled concentration of surface-level total iron compared well with observations, but less so in the soluble fraction where observations are much more variable in space and time. Comparing model and observational data is sensitive to the definition of the average and the temporal and spatial range over which it is calculated. Through statistical analysis and examples, we show that a median or log-normal distribution is preferred when comparing with soluble iron observations. We redefined ocean deposition regions based on dominant iron emission sources and found that the daily variability in soluble iron simulated by MIMI was larger than that of previous model simulations. MIMI simulated a general increase in soluble iron deposition to Southern Hemisphere oceans by a factor of two to four compared with the previous version, which has implications for our understanding of the ocean biogeochemistry of these predominantly iron limited ocean regions.
NEW TOOLS FOR CULTURAL HERITAGE TOURISM: ACCESSIBLE VIRTUAL REALITY FOR MILAN’S BASILICA SANT’AMBROGIO
Authors: Pybus C.
Published: May 2019

Abstract. Although virtual reality provides much new unexplored territory for presenting and disseminating cultural heritage, operating VR headsets and controllers remains challenging for new users. By taking advantage of the tools available within the Unreal Engine game engine, the ergonomics of the Oculus Rift motion controllers, and certain principles of storytelling; one can develop a set of strategies for making the use of virtual reality more accessible and intuitive, allowing for new possibilities in the dissemination of built cultural heritage to a general audience. Therefore his paper aims to provide concrete examples of how to produce more effective VR tools for cultural heritage dissemination.
HBIM FOR THE SURVEYING, ANALYSIS AND RESTORATION OF THE SAINT JOHN THE THEOLOGIAN CATHEDRAL IN NICOSIA (CYPRUS)
Authors: Santagati C. , Laurini C. R. , Sanfilippo G. , Bakirtzis N. , Papacharalambous D. , Hermon S.
Published: May 2019

Abstract. The present study illustrates the results of an interdisciplinary collaboration between the Mediterranean Laboratory of Survey and Diagnostics for Architecture (RDA) of the Department of Civil Engineering and Architecture (DICAR) of the University of Catania in Italy and the Andreas Pittas Laboratories for Art Characterisation (APAC) of the Science and Technology in Archaeology Research Center (STARC) of the Cyprus Institute in Cyprus. The research focused on the application of an H-BIM approach in the study of a Mediterranean iconic heritage asset, the St. John Cathedral of Nicosia, built in 1662 on the remains of a monastery from the 15th century. The adopted methodology has provided the framework for a dynamic investigation, constantly evolving along several dimensions: historical, geometric spatial, architectural-constructive identification and mapping of degrade, interpretation of degenerative causes and design proposals.
POINT CLOUD DATASET AND FEM FOR A COMPLEX GEOMETRY: THE SAN LUZI BELL TOWER CASE STUDY
Authors: Selvaggi I. , Bitelli G. , Serantoni E. , Wieser A.
Published: May 2019

Abstract. Detailed three-dimensional reconstruction of heritage objects is crucial for different purposes, such as analysis, preservation and maintenance, among others. Geomatics techniques allow acquiring complex and comprehensive information about geometry and current conditions of the surveyed objects in a short time, which is a great advantage for documentation and historical archives. The reconstruction of three-dimensional models is often performed using either image-based techniques, mainly Close Range Photogrammetry (CRP), including Structure from Motion approaches (SfM), or range-based techniques, such as Terrestrial Laser Scanning (TLS). These approaches have been widely applied in the field of Cultural Heritage to support multidisciplinary studies, from simple documentation to the monitoring of historical buildings, in restoration works or for structural analysis checks.The present paper aims at exploring the potential contribution of Geomatics to Structural Engineering, by investigating capabilities and advantages of TLS for a vertical structure. The experiments presented herein were carried out in a notable case study, the San Luzi church, located in Zuoz (Switzerland) in the Upper Engadin. Its bell tower is about 60 m high and is equipped with four bells. Strong vibrations caused by the ringing of the bells have been observed in the past, and a structural model was desired to enable numerical evaluations of the response of the tower to various load situations by FEM.
THE HBIM ANALYSIS OF THE GEOMETRY TO UNDERSTAND THE CONSTRUCTIVE TECHNIQUE: THE USE OF THE TROMPE VOLUME IN A BRICK VAULT
Authors: Attico D. , Turrina A. , Banfi F. , Grimoldi A. , Landi A. , Condoleo P. , Brumana R.
Published: May 2019

Abstract. The construction of brick-vaulted systems between the 16th and 18th centuries is a typical mark among the noble buildings in large part of Northern Italy. Nowadays they are still a witness of a high level of constructive knowledge by workers, formalized in historical treatises and manuals supporting a literature of theories and practices known since ancient times. The way a vault is geometrically built, regardless of its typology, is not unique and it differs in treatises, according to its location in time and space. The consequence is the generation of “mixed” solutions, where the result of the final volume is achieved by the integration of different generative models and spatial solutions. The observation of cloister vaults, apparently similar to each other but built adopting different constructive techniques within a single building, Magio Grasselli Palace in Cremona, helped to understand this topic.