bluuebunny/crossref_metadata_2025 huggingface dataset:
Mining Keywords from Short Text Based on LDA-Based Hierarchical Semantic Graph Model
Authors: Chen Wei , Yu Zhengtao , Xian Yantuan , Wang Zhenhan , Wen Yonghua
Published: March 2020

Extracting keywords from a text set is an important task. Most of the previous studies extract keywords from a single text. Using the key topics in the text collection, the association relationship between the topic and the topic in the cross-text, and the association relationship between the words and the words in the cross-text has not played an important role in the previous method of extracting keywords from the text collection. In order to improve the accuracy of extracting keywords from text collections, using the semantic relationship between topics and topics in texts and highlighting the semantic relationship between words and words under the key topics, this article proposes an unsupervised method for mining keywords from short text collections. In this method, a two level semantic association model is used to link the semantic relations between topics and the semantic relations between words, and extract the key words based on the combined action. First, the text is represented with LDA; the authors used word2vec to calculate the semantic association between topic and topic, and build a semantic relation graph between topics, that is the upper level graph, and use a graph ranking algorithm to calculate each topic score. In the lower layer, the semantic association between words and words is calculated by using the topic scores and the relationship between topics in the upper network allow a graph to be constructed. Using a graph sorting algorithm sorts the words in short text sets to determine the keywords. The experimental results show that the method is better for extracting keywords from the text set, especially in short articles. In the text, the important topics, the relationship between topics and the correlation between words can improve the accuracy of extracting keywords from the text set.
Pilot Portfolio Model
Authors: Simplício Ricardo , Gomes Jorge , Romão Mário
Published: March 2020

In the times of major technological changes with ever-shorter production cycles, subject to strong global competition, it is vital for organizations to optimize resources and benefit from their investments in order to achieve the expected successes. One of the main difficulties that organizations face is the high number of projects in their portfolio. Selecting and prioritizing projects is essential to ensure the maximum return on investment and the sustainability of the organization. The selection and prioritization of projects depends to a great extent on the profile of the managers, organizational culture and frameworks best suited to the organization's environment. This study intends to confront the pilot model of selection and prioritization developed by the Portuguese Navy and establish a bridge with the academic literature. The project was carried out with the purpose of improving the process of allocating the necessary resources for the accomplishment of the missions of the Navy in the context of the Portuguese National Defence.
Rules for Orthographic Word Parsing of the Philippines' Cebuano-Visayan Language Using Context-Free Grammars
Authors: Caroro Roseclaremath A , Paredes Rolysent K. , Lumasag Jerry M.
Published: March 2020

Syllabication is essential in the preprocessing stage of speech systems. In the context of the Philippines' Cebuano-Visayan language's syllabication rules, the existing rules do not include hyphenated words although the hyphen defines the syllable boundary in a word. Hence, this study created grammar rules for hyphenated words which include sequences of a hyphen between vowel-consonant, consonant-consonant, vowel-vowel, and consonant-vowel. The test was done for the enhanced grammar rules for Cebuano-Visayan syllabication with 1,465 representative hyphenated and non-hyphenated words of varying lengths. The result further implies that the syllabication analysis for hyphenated words showed that hyphens improve the naturalness and intelligibility in the utterance of the words, thereby enhancing the understanding and comprehension of the Cebuano-Visayan discourse.
A Comparative Analysis on Economic Load Dispatch Problem Using Soft Computing Techniques
Authors: Singh O.V. , Singh M.
Published: March 2020

This article aims at solving economic load dispatch (ELD) problem using two algorithms. Here in this article, an implementation of Flower Pollination (FP) and the BAT Algorithm (BA) based optimization search algorithm method is applied. More than one objective is hoped to be achieve in this article. The combined economic emission dispatch (CEED) problem which considers environmental impacts as well as the cost is also solved using the two algorithms. Practical problems in economic dispatch (ED) include both nonsmooth cost functions having equality and inequality constraints which make it difficult to find the global optimal solution using any mathematical optimization. In this article, the ELD problem is expressed as a nonlinear constrained optimization problem which includes equality and inequality constraints. The attainability of the discussed methods is shown for four different systems with emission and without emission and the results achieved with FP and BAT algorithms are matched with other optimization techniques. The experimental results show that conferred Flower Pollination Algorithm (FPA) outlasts other techniques in finding better solutions proficiently in ELD problems.
Social Media Utilisation and Business Performance of Hotels in Lebanon
Authors: Halawani Firas Mohamad , Soh Patrick C.H. , Halawani Yahya Mohamad
Published: March 2020

Several studies on social media from a users' perspective have been conducted. However, less attention has been paid to the effect of social media on organization performance, particularly among hotels. The aim of the study is to investigate the effect of social media on hotels' business performance as well as assessing the moderating effect of the hotel classification. In this study, a structural equation modelling method has been used for data analysis. The survey data was gathered from a sample of 146 hotels in Lebanon. Data analysis results demonstrate a positive and significant relationship between social media characteristics (visibility and association but not editability) on hotel business performance. The findings present valuable implications for hotel managers to direct their social media strategy and to capitalize on the possible benefits of social media to increase the business performance of hotels. In addition, the findings could also provide useful insights into other business sectors that have the intention to invest in social media.
A Comparison of Retrieval Result Relevance Judgments Between American and Chinese Users
Authors: Zhang Jin , Zhao Yuehua , Cai Xin , Le Taowen , Fei Wei , Ma Feicheng
Published: March 2020

Relevance judgment plays an extremely significant role in information retrieval. This study investigates the differences between American users and Chinese users in relevance judgment during the information retrieval process. 384 sets of relevance scores with 50 scores in each set were collected from 16 American users and 16 Chinese users as they judged retrieval records from two major search engines based on 24 predefined search tasks from 4 domain categories. Statistical analyses reveal that there are significant differences between American assessors and Chinese assessors in relevance judgments. Significant gender differences also appear within both the American and the Chinese assessor groups. The study also revealed significant interactions among cultures, genders, and subject categories. These findings can enhance the understanding of cultural impact on information retrieval and can assist in the design of effective cross-language information retrieval systems.
Two Types of Iron Smelting Furnaces in Ancient Mongolia
Authors: Sasada Tomotaka , Ishtseren Lochin
Published: March 2020

We excavated the Iron smelting furnaces, belonging to the Xiongnu Age (209BCE-155CE), in Mongolia. These furnaces can be divided into three types by structures. By the stratigraphic research and the radioactive carbon dating of charcoal, the transition from Type 3 to Type1 occurred from late BC1c. to around the beginning of AD1c.
An Examination of Athletic Trainers' Occupational Recovery Experiences During Time After Work
Authors: Gnacinski Stacy L. , Nai Mellanie , Brady Megan , Meyer Barbara B. , Newman Nate
Published: March 2020

Context

Although researchers have directed scholars toward investigating the effectiveness of the nonwork personal time of athletic trainers (ATs), no one has characterized the occupational recovery experiences of ATs.

Objective

To examine the reliability and validity of the Recovery Experience Questionnaire (REQ) for use in AT populations.

Design

Cross-sectional study.

Setting

Web-based survey.

Patients or Other Participants

A total of 144 ATs (71 men, 73 women) working in a variety of National Collegiate Athletic Association sports across all levels of competition.

Main Outcome Measure(s)

The REQ was administered to assess the AT recovery experience.

Results

Preliminary evidence emerged for the reliability (ω = 0.80–0.90) and validity of the REQ for use in AT populations. Weak linear relationships were identified between stress and perceptions of psychological detachment (r = −0.314, P < .001), mastery (r = −0.179, P = .32), control (r = −0.284, P = .001), and relaxation (r = −0.157, P = .06).

Conclusions

Our results support measuring and applying occupational recovery for AT stress and work-life balance. Given that occupational recovery as a construct was only weakly related to stress, it is clearly a unique and distinct variable worth considering within the work-life balance line of inquiry.
Removal of solids and chemical oxygen demand in poultry litter anaerobic digestion with different inocula
Authors: Bortolini Joseane , Tavares Maria Hermínia Ferreira , Freitag Dayane Taine , Kuczman Osvaldo
Published: March 2020

Population growth has contributed to increasing poultry production, entailing a high waste loading, mainly poultry litter. One of the alternatives to treat such residues is anaerobic digestion, in which digester startup and generated-digestate quality are related to the material to be digested and to operation conditions, wherein inoculum use is one of the factors. This study therefore aimed to investigate how digestates, such as inocula, influence poultry litter (PL) anaerobic digestion, as well the reduction of solids and chemical oxygen demand (COD). For this, two inocula (bovine and swine digestates) were tested in the digestion process. The inocula were added at loads of 0.67, 1.00 and 1.67 gVS.L-1day-1. A split-plot design was developed and data underwent analysis of variance with means compared by the Tukey's test at 5% significance. Concerning bovine and swine inocula, it was concluded that both are indicated in the process. However, swine inoculum is better indicated because it had a better removal of total solids (TS), volatile solids (VS) and COD.
Абелевы RE-группы
Authors: Kolenova Elena Mikhailovna , Pushkova Tat'yana Aleksandrovna
Published: March 2020

Абелева группа, всякое ненулевое кольцо на которой изоморфно кольцу
ее эндоморфизмов, называется RE-группой. В настоящей работе RE-группы
описаны в классах абелевых групп, таких как: периодические, делимые,
нередуцированные, без кручения ранга один. Показано, что в классе вполне
разложимых абелевых групп без кручения не существует RE-групп.
Библиография: 4 названия.
Еще одно описание функтора Конна-Хигсона
Authors: Makeev Georgii Sergeevich
Published: March 2020

Пусть $A$, $B$ - $C^{*}$-алгебры, $A$ сепарабельна, $B$ стабильна.
Элементы группы $E_{1}(A,B)$ $E$-теории Конна-Хигсона представлены
$*$-гомоморфизмами из надстройки $A$
в асимптотическую алгебру $\mathfrak AB$. В данной работе мы
построим эндофунктор $\mathfrak M$ в категории $C^{*}$-алгебр,
введем множество специальным образом определенных классов
гомотопности $*$-гомоморфизмов из $A$ в $\mathfrak{MA}B$ и покажем,
что оно, будучи наделенным естественной структурой абелевой группы,
совпадает с $E_{1}(A,B)$.
Библиография: 11 названий.
Овыпукление по Гамкрелидзе и теорема Боголюбова
Authors: Avakov Evgeny Rachievich , Magaril-Il'yaev Georgii Georgievich
Published: March 2020

Изучаются взаимосвязи задачи оптимального управления
с ее овыпуклениями по Гамкрелидзе и Боголюбову.
В качестве одного из следствий выводится классический
результат Боголюбова для простейшей задачи вариационного
исчисления.
Библиография: 6 названий.
Entre palavras e imagens de um mundo surreal: pensamentos matemáticos em uma experiência com crianças e Salvador Dalí
Authors: Souza Jéssica Juliane Lins de , Flores Cláudia Regina , Machado Rosilene Beatriz
Published: March 2020

Inaugurada por Flores (2013), a “perspectiva da visualidade em educação matemática” surge como uma estratégia de análise e alargamento das pesquisas sobre o visual, discutindo como nosso olhar foi constituído historicamente e formas outras de pensar a relação da arte com a matemática. O presente artigo é a escrita de uma experiência com crianças no encontro com a arte de Salvador Dalí, com o objetivo de experimentar e problematizar uma geometria não-euclidiana junto à sua obra. Usando a ideia de oficina-dispositivo, criou-se uma oficina a partir de alguns aspectos da obra do pintor que tinha a intenção de provocar visualidades, fazendo emergir pensamentos e saberes matemáticos. A partir da escuta atenta a uma história que narrava características de um mundo surreal, crianças do 5º ano do Ensino Fundamental do Colégio de Aplicação da Universidade Federal de Santa Catarina foram convidadas a imaginar e construir o seu próprio mundo, fazendo colagens de figuras em caixas de ovo. A colagem, na superfície ondulada da caixa, causou inquietação e fez com que pensamentos matemáticos emergissem do estranhamento com uma geometria não-euclidiana. Durante a oficina, puderam ser observadas narrativas que ligavam a deformação das figuras a algo errado ou feio, e também tentativas de não-deformação das figuras através de estratégias diversas. Além disso, de outro modo, a oficina efetivou um espaço em que o ensino e a aprendizagem da matemática elaboram-se a partir dos sentidos da experiência, problematizando conexões com o real e o surreal.
Dificuldades de aprendizagem nos anos iniciais do ensino fundamental: por que as crianças não aprendem?
Authors: Stürmer Patrícia Aparecida , Umbelino Janaina Damasco
Published: March 2020

Neste artigo, apresentamos os resultados de uma pesquisa que teve como objetivo sistematizar e analisar os dados provenientes da avaliação dos professores no momento dos encaminhamentos de crianças com indicativos de Dificuldades de Aprendizagem. A ênfase desse artigo está na compreensão dos professores em relação às dificuldades de aprendizagem, ou seja, o que compreendem como sendo uma dificuldade e porquê as crianças não aprendem. Utilizamos como aportes teóricos os fundamentos da Teoria Histórico-Cultural, por acreditar ser essa a que melhor explica o desenvolvimento humano e, principalmente, como as relações sociais medeiam esse processo. Nossa pesquisa baseou-se em um estudo de caso de uma rede municipal de ensino e para alcançarmos nossos objetivos realizamos entrevistas semiestruturadas com nove professoras do ensino fundamental, seguindo uma abordagem qualitativa. Os resultados apontam que as professoras não têm uma definição concisa sobre as dificuldades de aprendizagem; formulam descrições de desempenho dos estudantes. Assim como, nesse caminho da pesquisa, chegamos essencialmente à conclusão de que a criança não apresenta uma dificuldade de aprendizagem, mas sim a enfrenta, por ser um sujeito ativo durante o processo.
Contribuições das pesquisas sobre tecnologias e formação docente no campo da EJA
Authors: Soek Ana Maria , Haracemiv Sonia Maria , Guérios Ettiène , Silva Larissa Barbosa Luiz Rodrigues da
Published: March 2020

Este artigo apresenta um mapeamento das contribuições das pesquisas que tratam das especificidades do campo da Educação de Jovens e Adultos (EJA) e que trazem em seu escopo as temáticas de Tecnologias e Formação Docente. A proposta busca identificar os objetos de estudo e os principais conceitos que suscitam as discussões em relação ao tema, bem como os principais teóricos e referências das áreas abordadas. A produção é parte de um estudo bibliográfico numa abordagem qualitativa, a partir do mapeamento das produções no campo da EJA, Tecnologias e Formação Docente, visando identificar os principais conceitos desse campo de estudos como subprojeto da pesquisa Epeja-UFSC, que visa à elaboração de um glossário temático conceitual. Para tanto, foram selecionados dentre os 69 artigos indexados na Base da Capes Periódicos, no período de 2007 a 2017. Analisando-se o material selecionado, foi possível identificar várias relações com outros conceitos correlatos, como por exemplo: formação e profissionalização docente; saberes docentes; formação continuada de professores; práticas pedagógicas; estágios supervisionados e políticas públicas na Educação. Na análise, outros conceitos foram identificados como os referentes à metodologia de pesquisa em educação; às políticas da pós-graduação; à educação matemática; às práticas baseadas em evidência na educação e à representação semiótica. Além da diversidade de temas, foi possível observar também a diversidade e amplitude do referencial teórico adotado nos estudos analisados, conforme as temáticas abordadas.
Size-resolved particle number emissions in Beijing determined from measured particle size distributions
Authors: Kontkanen Jenni , Deng Chenjuan , Fu Yueyun , Dada Lubna , Zhou Ying , Cai Jing , Dällenbach Kaspar R. , Hakala Simo , Kokkonen Tom V. , Lin Zhuohui , Liu Yongchun , Wang Yonghong , Yan Chao , Petäjä Tuukka , Jiang Jingkun , Kulmala Markku , Paasonen Pauli
Published: March 2020

Abstract. The climate and air quality effects of aerosol particles depend on the number and size of the particles. In urban environments, a large fraction of aerosol particles originates from anthropogenic emissions. To evaluate the effects of different pollution sources on air quality, knowledge of size distributions of particle number emissions is needed. Here we introduce a novel method for determining size-resolved particle number emissions based on measured particle size distributions. We apply our method to data measured in Beijing, China, to determine the number size distribution of emitted particles in diameter range from 2 to 1000 nm. The observed particle number emissions are dominated by emissions of particles smaller than 30 nm. Our results suggest that traffic is the major source of particle number emissions with the highest emissions observed for particles around 10 nm during rush hours. At sizes below 6 nm, clustering of atmospheric vapors contributes to calculated emissions. The comparison between our calculated emissions and those estimated with an integrated assessment model GAINS shows that our method yields clearly higher particle emissions at sizes below 60 nm, but at sizes above that the two methods agree well. Overall, our method is proven to be a useful tool for gaining new knowledge of size distributions of particle number emissions in urban environments.
Meteorological and cloud conditions during the Arctic Ocean 2018 expedition
Authors: Vüllers Jutta , Achtert Peggy , Brooks Ian M. , Tjernström Michael , Prytherch John , Neely III Ryan
Published: March 2020

Abstract. The Arctic Ocean 2018 (AO2018) expedition took place in the central Arctic Ocean in August and September 2018. An extensive suite of instrumentation provided detailed measurements of surface water chemistry and biology, sea ice and ocean physical and biogeochemical properties, surface exchange processes, aerosols, clouds, and the state of the atmosphere. The measurements provide important information on the coupling of the ocean and ice surface to the atmosphere and in particular to clouds. This paper provides: (i) an overview of the synoptic-scale atmospheric conditions and its climatological anomaly to help interpret the process studies and put the detailed observations from AO2018 into a larger context, both spatially and temporally; (ii) a statistical analysis of the thermodynamic and near-surface meteorological conditions, boundary layer, cloud, and fog characteristics; (iii) a comparison of the results to observations from earlier Arctic Ocean expeditions, in particular AOE96, SHEBA, AOE2001, ASCOS, ACSE, and AO2016, to provide an assessment of the representativeness of the measurements. The results show that near-surface conditions were broadly comparable to earlier experiments, however the thermodynamic vertical structure was quite different. An unusually high frequency of well-mixed boundary layers up to about 1 km depth occurred, and only a few cases of the prototypical Arctic summer single-layer stratocumulus deck were observed. Instead, an unexpectedly high amount of multiple cloud layers and mid-level clouds was present throughout the campaign. These differences from previous studies are related to the high frequency of cyclonic activity in the central Arctic in 2018.
Aerosol acidity and liquid water content regulate the dry deposition of inorganic reactive nitrogen
Authors: Nenes Athanasios , Pandis Spyros N. , Kanakidou Maria , Russell Armistead , Song Shaojie , Vasilakos Petros , Weber Rodney J.
Published: March 2020

Abstract. Ecosystem productivity is strongly modulated by the atmospheric deposition of inorganic reactive nitrogen (the sum of ammonium and nitrate). The individual contributions of ammonium and nitrate vary considerably over space and time, giving rise to complex patterns of nitrogen deposition. In the absence of rain, much of this complexity is driven by the large difference between the dry deposition velocity of nitrogen-containing molecules in the gas or condensed phase. Here we quantify how aerosol liquid water and acidity, through their impact on gas-to-particle partitioning, modulate the deposition velocity of NH3 and HNO3 individually, while simultaneously affecting the dry deposition of inorganic reactive nitrogen. Four regimes of deposition velocity emerge: i) HNO3-fast, NH3-slow, ii) HNO3-slow, NH3-fast, iii) HNO3-fast, NH3-fast, and, iv) HNO3-slow, NH3-slow. Conditions that favor partitioning of species to the aerosol phase strongly reduce the deposition of reactive nitrogen species and promote their accumulation in the boundary layer and potential for long-range transport. Application of this framework to select locations around the world reveals fundamentally important insights: The dry deposition of total ammonia displays little sensitivity to pH and liquid water variations, except under conditions of extreme acidity and/or low aerosol liquid water content. The dry deposition of total nitric acid, on the other hand, is quite variable, with maximum deposition velocities (close to gas-deposition rates) found in the Eastern US and minimum velocities in Northern Europe and China. In the latter case, the low deposition velocity leads to up to 10-fold increases in PM2.5 nitrate aerosol, thus contributing to the high PM2.5 levels observed during haze episodes. In this light, aerosol pH and associated liquid water content can be considered as control parameters that drive dry deposition flux and can accelerate the accumulation of aerosol contributing to intense haze events throughout the globe.
Variable tree rooting strategies improve tropical productivity and evapotranspiration in a dynamic global vegetation model
Authors: Sakschewski Boris , von Bloh Werner , Drüke Markus , Sörensson Anna A. , Ruscica Romina , Langerwisch Fanny , Billing Maik , Bereswill Sarah , Hirota Marina , Oliveira Rafael S. , Heinke Jens , Thonicke Kirsten
Published: March 2020

Abstract. Tree water access via roots is crucial for forest functioning and therefore forests have developed a vast variety of rooting strategies across the globe. However, Dynamic Global Vegetation Models (DGVMs), which are increasingly used to simulate forest functioning, often condense this variety of tree rooting strategies into biome-scale averages, potentially under- or overestimating forest response to intra- and inter-annual variability in precipitation. Here we present a new approach of implementing variable rooting strategies and dynamic root growth into the LPJmL4.0 DGVM and apply it to tropical and sub-tropical South-America under contemporary climate conditions. We show how competing rooting strategies which underlie the trade-off between above- and below-ground carbon investment lead to more realistic simulated intra-annual productivity and evapotranspiration, and consequently forest cover and spatial biomass distribution. We find that climate and soil depth determine a spatially heterogeneous pattern of mean rooting depth and belowground biomass across the study region.
DINCAE 1.0: a convolutional neural network with error estimates to reconstruct sea surface temperature satellite observations
Authors: Barth Alexander , Alvera-Azcárate Aida , Licer Matjaz , Beckers Jean-Marie
Published: March 2020

Abstract. A method to reconstruct missing data in sea surface temperature data using a neural network is presented. Satellite observations working in the optical and infrared bands are affected by clouds, which obscure part of the ocean underneath. In this paper, a neural network with the structure of a convolutional auto-encoder is developed to reconstruct the missing data based on the available cloud-free pixels in satellite images. Contrary to standard image reconstruction with neural networks, this application requires a method to handle missing data (or data with variable accuracy) in the training phase. The present work shows a consistent approach which uses the satellite data and its expected error variance as input and provides the reconstructed field along with its expected error variance as output. The neural network is trained by maximizing the likelihood of the observed value. The approach, called DINCAE (Data INterpolating Convolutional Auto-Encoder), is applied to a 25-year time series of Advanced Very High Resolution Radiometer (AVHRR) sea surface temperature data and compared to DINEOF (Data INterpolating Empirical Orthogonal Functions), a commonly used method to reconstruct missing data based on an EOF (empirical orthogonal function) decomposition. The reconstruction error of both approaches is computed using cross-validation and in situ observations from the World Ocean Database. DINCAE results have lower error while showing higher variability than the DINEOF reconstruction.
Technical Note: Flow velocity and discharge measurement in rivers using terrestrial and unmanned-aerial-vehicle imagery
Authors: Eltner Anette , Sardemann Hannes , Grundmann Jens
Published: March 2020

Abstract. An automatic workflow to measure surface flow velocities
in rivers is introduced, including a Python tool. The method is based on particle-tracking
velocimetry (PTV)
and comprises an automatic definition of the search area for particles to
track. Tracking is performed in the original images. Only the final tracks
are geo-referenced, intersecting the image observations with water surface
in object space. Detected particles and corresponding feature tracks are
filtered considering particle and flow characteristics to mitigate the
impact of sun glare and outliers. The method can be applied to different
perspectives, including terrestrial and aerial (i.e. unmanned-aerial-vehicle; UAV) imagery. To
account for camera movements images can be co-registered in an automatic
approach. In addition to velocity estimates, discharge is calculated using
the surface velocities and wetted cross section derived from surface models
computed with structure-from-motion (SfM) and multi-media photogrammetry. The
workflow is tested at two river reaches (paved and natural) in Germany.
Reference data are provided by acoustic Doppler current profiler (ADCP) measurements. At the paved river reach, the
highest deviations of flow velocity and discharge reach 4 % and 5 %,
respectively. At the natural river highest deviations are larger (up to
31 %) due to the irregular cross-section shapes hindering the accurate
contrasting of ADCP- and image-based results. The provided tool enables the
measurement of surface flow velocities independently of the perspective from
which images are acquired. With the contactless measurement, spatially
distributed velocity fields can be estimated and river discharge in
previously ungauged and unmeasured regions can be calculated, solely
requiring some scaling information.
To clamp or not to clamp?
Authors: Clark Roderick , Fan Stacy , Navaratnam Roshan , Punjani Nahid , Power Nicholas
Published: March 2020

Introduction: Radical prostatectomy (RP) is the gold-standard surgical treatment for men with clinically localized prostate cancer (PCa). Surgical techniques to minimize intra and post-operative complications are well established, but excessive bleeding during RP continues to be a concern. The objective of our study was to determine whether additional intraoperative temporary occlusion of the internal iliac arteries combined with a penile base tourniquet during open RP improves hemostasis.

Methods: We conducted a retrospective chart review of 23 patients who underwent open RP between Jan 2014 to May 2016. Eight patients underwent open RP with additional clamping of the internal iliac arteries using bulldog vascular clamps combined with a penile base penrose drain tourniquet as temporary prostatic arterial and venous control during dorsal venous complex ligation and neurovascular bundle sparing. Our primary outcome was immediate and post-operative day 1 hemoglobin levels. Our main outcome was analyzed using Students t-test with equal variance.

Results: We stratified participants by clamping type. Fifteen patients underwent no clamping and 8 patients had the combined temporary clamping. Primary analysis of estimated blood loss showed a reduction in average blood loss among individuals with vascular control technique versus usual technique (516 ml and 754 ml respectively, p= 0.021). There were no obvious intraoperative or postoperative complications noted that could have been attributable to the temporary vascular control techniques.

Conclusion: Temporary vascular control with the addition of minor surgical techniques during open RP may improve an objective measure of blood loss immediately after surgery.
An exploration of sociological factors that contribute to physician burnout
Authors: Gray Jennifer
Published: March 2020

A discussion about mental health and how it relates to the medical profession is incomplete without exploring the concept of burnout.  The implications of physician burnout are profound, and it is plaguing the medical community at epidemic rates.  Current research focuses on which occupational factors may be contributing to this problem.  Other approaches involve investigating the efficacy of building resilience at the individual level as a means of combatting burnout.  Examining this issue through a broader lens and considering sociocultural factors that may be influencing how medicine is experienced by those in the field is remarkably untouched in the literature.  This article will discuss how several changes in contemporary Canadian society may be underlying factors in physician burnout. The increasing penetrance of the internet into patient-physician interactions, the rise of online review platforms and widespread secularization in a domain that continues to face issues that evidence-based medicine fails to explain will all be addressed.  This is merely a preliminary discussion to fortify current initiatives aimed at promoting awareness of and preventing physician burnout.
Reflections from an interprofessional education symposium on the use of art to inform clinical practice
Authors: Kitching George Tjensvoll , Kogel Emily Grace , Baillargeon Dominique , Fareez Faiha
Published: March 2020

A novel, student-organized event, the ‘Art in Healthcare’ interprofessional education symposium was held in November 2018 as the inaugural event hosted by the Windsor Interprofessional Health Student Collaboration. Students attending represented five different programmes of study and came from five different campuses, all in Ontario. The impetus for it was grounded in the existing landscape of interprofessional education and the use of narrative and artistic approaches to guide reflection on professional identity for health professionals. The structure of the symposium included a keynote address, workshops, and a closing ceremony. Pre- and post-symposium surveys were administered and filled out by students and helped to inform this reflection. Participants were given the space, time, and artistic tools to engage in critical thought about their past experiences as health care professional students. They used narrative and artistic approaches to express complex and difficult thoughts and ideas which helped to illuminate shared experiences and create shared awareness. Through reflection and conscious decisions regarding representation of ideas through alternative artistic media, students explored their feelings and identities. The ‘Art in Healthcare’ symposium introduced new tools and methods for health professional students to engage in critical reflection, providing many benefits for students and their patients alike.
Priming quantifier scope: Reexamining the evidence against scope inversion
Authors: Feiman Roman , Maldonado Mora , Snedeker Jesse
Published: March 2020

In a study of quantifier-scope priming, Chemla and Bott (2015) found evidence suggesting that, while representations of quantifiers’ relative scope can be primed, a scope inversion operation cannot. We identify a confound in their materials. In Experiment 1, we replicate their finding with this confound intact. In Experiment 2, we remove the confound and find that all priming disappears. This confound demonstrates how structural priming paradigms can be sensitive to many dimensions of similarity, pointing to a need for task-specific controls. We conclude that the prior study does not provide evidence concerning the priming of either relative scope representations or operations. While priming of scope representations has been independently found in other paradigms, the jury is still out on Chemla and Bott’s more novel finding – the absence of priming of a scope inversion operation.
Swordfish Xiphias gladius diet in the Florida Straits
Authors: Heemsoth Amy M , Hirons Amy C , Collatos Caroline M , Kerstetter David W
Published: March 2020

Swordfish Xiphias gladius inhabit the Florida Straits year-round and provide a significant role in the food web as top-level predators. However, little is known about the diet composition and thus ecological role of swordfish in Florida. This study investigated swordfish diet
by analyzing stomach contents of 131 swordfish in the Florida Straits from April 2007 to December 2008. Identifiable species included 13 teleost species, 3 cephalopod species, and 1 crustacean species. Cephalopods dominated the swordfish diet by weight (72.4%) and number (69.9%), and ranked
highest in importance in the diet by the index of relative importance (IRI; 81.5%). Teleosts occurred the most (99.1%) but represented the second highest importance in diet by weight (25.2%), number (26.3%), and IRI (17.6%). Illex sp. was the prey with the greatest dietary importance,
followed by unidentifiable ommastrephid squids. Stomach fullness index values ranged from 0 (empty) to 8.98 (mean = 0.37). A positive significant correlation between swordfish length and prey length was found (r2 = 0.104, P = 0.037), and no significant correlations
were found between swordfish weight and prey weight (r2 = –0.075, P = 0.065). This is the first study to report a comprehensive diet of swordfish inhabiting waters in the Florida Straits region and suggests swordfish may be opportunistic feeders, altering their
diet when abundance or presence of prey changes.
Domain Extensions of Binomial Numbers Applying Successive Sums Transformations on Sequences Indexed by Integers
Authors: Barroso Marlo M. , Karam-Filho José , Giraldi Gilson A.
Published: March 2020

The classic deﬁnition of binomial numbers involves factorials, making unfeasible their extension for negative integers. The methodology applied in this paper allows to establish several new binomial numbers extensions for the integer domain, reproduces to integer arguments those extensions that are proposed in other works, and also veriﬁes the results of the usual binomial numbers. To do this, the impossibility to compute factorials with negative integer arguments is eliminated by the replacement of the classic binomial deﬁnition to a new one, based on operations recently proposed and, until now, referred to as transformations by the successive sum applied on sequences indexed by integers. By particularizing these operations for the sequences formed and indexed by integers, it is possible to redeﬁne the usual binomial numbers to any integer arguments, with the advantage that the values are more easily computed by using successive additions instead of multiplications, divisions or possibly more elaborate combinations of these operators, which could demand more than one or two sentences to their application.
Using the Interval Metric for Modeling Entities Geometrics in R2 – Case Study Interval Circumference
Authors: Aguiar Sergio S. , Trindade Roque M. P. , Andrade Alexsandra O. , Silva Alzira F. , Cerquiera Gonçalo R.
Published: March 2020

The study of some distances provide science away to separate two entities.It has applications in various ﬁelds such as remote sensing, datamining, pattern recognition and multivariate data analysis and others. If the distance is a Hausdorff metric, the guarantee is that all individuals are available. With the use of the distance of Trindade et al, we intend to extend the real topology to an interval topology, since the interval distance preserves the uncertainties and exits noise in the data. The present work proposes an interval circumference using an interval distance of a point to the center (pixel), like a set of pixels obeying certain distances to the center. With the interval circumference we intend to extend the notion of open ball and the concepts of neighborhood for the construction of the interval topology. A circumference separates a space into three regions, inner region, border region and outer region, where we construct our notion of neighborhood. In this work we will explore only the geometric properties of the intervalcircumference, we will extrapolate the notion from point to pixel by providing a differentiated frontier region for the clustering area.
Increase in Subcellular GSK-3 Clusters in Insulin- and Adrenaline-treated Differentiated Rat Skeletal Muscle Fibres
Authors: Fink Katja , Lobe Prebil Mateja , Vardjan Nina , Jensen Jorgen , Zorec Robert , Kreft Marko
Published: March 2020

Glycogen synthase kinase 3 (GSK-3) plays an important role in metabolic regulation in skeletal muscles, and both insulin and adrenaline stimulate   GKS-3 phosphorylation. The aim of the present study was to study the effect of insulin and adrenaline on GSK-3 localisation in skeletal muscles.We characterized subcellular localization of (GSK-3) signal protein in fully differentiated muscle fibre by immunofluorescence and confocal microscopy. We stimulated muscle fibres with insulin and/or adrenaline. Images were analysed by segmentation of single central optical section of the muscle.We found GSK-3 to be localised in clusters. The number of GSK-3 clusters and their average size were increased after stimulation with insulin and/or adrenaline. Average GSK-3 particle size is linearly related to their quantity.We conclude that subcellular GSK-3 in isolated skeletal muscle fibres is localized in clusters and clustering increased after stimulation with insulin and/or adrenaline.
Solvent Extraction Optimization of Chlorophyll Dye from Conocarpus Lancifolius Leaves
Authors: Jassim Nawras Jameel
Published: March 2020

Recently, the green food industry has started using chlorophyll dye as a healthy and safe color additive for food and beverages. In this study, a conventional extraction technique was used to extract chlorophyll dye from Conocarpus lancifolius leaves, using 80% acetone as solvent. Taguchi's L25 orthogonal array was utilized to optimize the extraction parameters with total chlorophyll dye yield as the response. The optimum extraction conditions were 75 minutes of extraction time, 33.5 °C extraction temperature and a 118 ml/g solvent to raw leaves ratio. Analysis of variance using Minitab18 was conducted to identify the most significant extraction parameters and available interactions. It was found that the chlorophyll dye yield from Conocarpus lancifolius leaves is mostly dependent on extraction time, followed by mixing ratio and temperature. The analysis showed a large interaction between the extraction parameters studied. The experimental chlorophyll dye yield was in close agreement with the predicted model. The adequacy of the predicted model was confirmed by an experiment conducted under the optimal conditions, given a 3.9% error percentage.
Phytoremediation of Mercury Contaminated Soil with the Addition of Compost
Authors: Ratnawati Rhenny , Faizah F.
Published: March 2020

Phytoremediation is an alternative technology for processing mercury (Hg) contaminated soil. The objective of this study was to treat Hg contaminated soil by adding compost using Sansevieria trifasciata and Celosia plumosa. The variations of the composition of the growth media were 100% contaminated soil and 80% contaminated soil with 20% compost. The plants used were aged 1 month and 30 cm high. The reactor was a polybag with a diameter and height of 25 cm. Sampling was conducted once every 7 days for 28 days. This research showed that the reactor with growth media consisting of 80% contaminated soil and 20% compost with Sansevieria trifasciata and Celosia plumosa had an Hg removal efficiency of 75.63% (58 mg/kg) and 66.81% (79 mg/kg), respectively. The Hg removal efficiency with growth media consisting of 100% contaminated soil was 74.79% (60 mg/kg) and 65.55% (82 mg/kg) in the reactor with Sansevieria trifasciata and Celosia plumosa respectively.
Development of Electrode Deposition Methods for Scale-up of Dye Sensitized Solar Cells
Authors: Mutiari Anies , Ananda Wisnu , Widiatmoko Pramujo , Devianto Hary , Nurdin Isdiriayani , Adriaan Adriaan , Utomo Mhd Ridho , Koto Hilham Zamriko
Published: March 2020

This research studied the effect of electrode deposition method on the performance of dye-sensitized solar cells (DSSCs). Four deposition methods (bar coating, doctor blade coating, screen printing, and spray coating) were compared. For commercial production purposes, applicability of the methods to a scaled-up DSSC was studied. In order to minimize the production cost, commercial activated carbon was utilized as counter electrode. The experimental results showed that the doctor blade technique provided the best DSSC performance among the investigated methods. Based on the study of cell I-V characteristics, the photoelectric conversion efficiency of the DSSC with an electrode active area of 70 cm2 was significantly lower than with 5 cm2 despite using the same deposition method. The electrochemical characteristics of the cells were further studied using electrochemical impedance analysis.
Developing a Plastic Waste Management Program: From River Basins to Urban Beaches (Case Study)
Authors: Moura Micaella R.F. , FalcÃ£o Symone M.P. , Da Silva Alisson Caetano , Neto Alfredo Ribeiro , Montenegro Suzana M.G.L. , Da Silva Simone Rosa
Published: March 2020

Solid waste accumulation in coastal environments has been a growing concern. In the coastal megacity of Recife, Pernambuco state, Brazil, plastic waste issues currently exist both at the ocean scale and river basin scale. The city is known as the 'Brazilian Venice' thanks to the Capibaribe River, which crosses many neighborhoods, running in a west-east direction into the Atlantic Ocean. This paper provides the initial basis to develop a Plastic Waste Management Program proposal for implementation in the city of Recife, given the lack of resolutions that have looked at plastic waste management through integrated water environment scales (from river basin to ocean). The methodology used included articulation and documental collection from four main public agencies from the state/city and stakeholders. The results showed its relevance for better plastic waste management in Recife, considering an integrated water environment on a river basin-to-ocean scale by using the recognized major connected water environments (Capibaribe river and Boa Viagem beach). Similar integrated program proposals could be made for other coastal areas, enabling not only the identification of fragilities but also the exchange of information regarding the theme.
Adsorption of Gold from Aqueous Systems Using Microbial Thermophilic Proteins
Authors: Kasmiarno Laksmi Dewi , Chang Jo Shu
Published: March 2020

A precious metal such as gold can be obtained from mining. Metals in low concentrations at geothermal sites or in industrial waste are difficult to gain using the conventional mining process. Alternative approaches for recovering metals from dilute solutions have been developed, such as biosorption, i.e. adsorption using microorganisms or their derivatives. In this study, gold in an aqueous system was recovered via biosorption using proteins produced from an isolated thermophilic bacterial strain. Modified Thermus enhanced medium was used as the medium to improve protein production from the thermophilic bacterial strain. The microbial proteins showed effective conditions for Au3+ ion adsorption. The optimum adsorption conditions for Au ions occurred at pH 1 with an adsorption capacity of 482.0 mg/g protein. The metal ion adsorption capacity increased with increasing temperature. The adsorption isotherm was conducted at room temperature, because the Au ions could be well fitted by the Freundlich isotherm equation with qmax at 527.229 mg/g protein.
Evidenzorientierung in der deutschen Kriminalprävention und -politik. Entwicklung und Überlegungen zum Stand der Dinge
Authors: Walsh Maria
Published: March 2020

Der Beitrag befasst sich mit Evidenzorientierung in Kriminalprävention und -politik innerhalb Deutschlands. Dabei wird zunächst ein kurzer Überblick über die Entwicklung des Diskurses rund um die Frage „what works?“ gegeben und auf den Begriff „Evidenzorientierung“ eingegangen. Anschließend werden Bedarfe anhand einiger Beispiele dargelegt und Überlegungen zur Ethik im Zwangs- und Pflichtkontext angestellt. Der Beitrag schließt mit resümierenden Gedanken zur Rolle der „Präventionswissenschaft“.
Datenbanken, Online-Votings und künstliche Intelligenz – Perspektiven evidenzbasierter Strafzumessung im Zeitalter von „Legal Tech“
Authors: Kaspar Johannes , Höffler Katrin , Harrendorf Stefan
Published: March 2020

Der Beitrag befasst sich mit den Möglichkeiten, auf Legal Tech aufbauende Methoden evidenzbasierter Strafzumessung in das deutsche Strafrecht einzubringen. Hierzu wird zunächst geklärt, welche Formen der (zumindest partiellen) Evidenzbasierung sich für den Bereich der Strafzumessung überhaupt anbieten. Darüber hinaus werden verschiedene technische Ansätze, von Strafzumessungsdatenbanken bis hin zur automatisierten Strafzumessung mittels „schwacher“ künstlicher Intelligenz, diskutiert. Als Beispiel für eine bereits realisierte Strafzumessungsdatenbank wird dabei auf diejenige des japanischen Saiban’in-Systems verwiesen. Die Chancen und Risiken verschiedener Modelle der Legal Tech im Strafzumessungsbereich werden erörtert. Abschließend wird weiterer empirischer und normativer Forschungsbedarf konstatiert.