bluuebunny/crossref_metadata_2025_split huggingface dataset:
Join query optimization techniques for complex event processing applications
Authors: Kolchinsky Ilya , Schuster Assaf 
Published: September 2018

Complex event processing (CEP) is a prominent technology used in many modern applications for monitoring and tracking events of interest in massive data streams. CEP engines inspect real-time information flows and attempt to detect combinations of occurrences matching predefined patterns. This is done by combining basic data items, also called "primitive events", according to a pattern detection plan, in a manner similar to the execution of multi-join queries in traditional data management systems. Despite this similarity, little work has been done on utilizing existing join optimization methods to improve the performance of CEP-based systems.
In this paper, we provide the first theoretical and experimental study of the relationship between these two research areas. We formally prove that the CEP Plan Generation problem is equivalent to the Join Query Plan Generation problem for a restricted class of patterns and can be reduced to it for a considerably wider range of classes. This result implies the NP-completeness of the CEP Plan Generation problem. We further show how join query optimization techniques developed over the last decades can be adapted and utilized to provide practically efficient solutions for complex event detection. Our experiments demonstrate the superiority of these techniques over existing strategies for CEP optimization in terms of throughput, latency, and memory consumption.
Streaming graph partitioning
Authors: Abbas Zainab , Kalavri Vasiliki , Carbone Paris , Vlassov Vladimir 
Published: September 2018

Graph partitioning is an essential yet challenging task for massive graph analysis in distributed computing. Common graph partitioning methods scan the complete graph to obtain structural characteristics offline, before partitioning. However, the emerging need for low-latency, continuous graph analysis led to the development of online partitioning methods. Online methods ingest edges or vertices as a stream, making partitioning decisions on the fly based on partial knowledge of the graph. Prior studies have compared offline graph partitioning techniques across different systems. Yet, little effort has been put into investigating the characteristics of online graph partitioning strategies.
In this work, we describe and categorize online graph partitioning techniques based on their assumptions, objectives and costs. Furthermore, we employ an experimental comparison across different applications and datasets, using a unified distributed runtime based on Apache Flink. Our experimental results showcase that model-dependent online partitioning techniques such as low-cut algorithms offer better performance for communication-intensive applications such as bulk synchronous iterative algorithms, albeit higher partitioning costs. Otherwise, model-agnostic techniques trade off data locality for lower partitioning costs and balanced workloads which is beneficial when executing data-parallel single-pass graph algorithms.
Statistics of Hecke eigenvalues for GL(𝑛)
Authors: Lau Yuk-Kam , Ng Ming Ho , Wang Yingnan 
Published: September 2018

AbstractA two-dimensional central limit theorem for the eigenvalues ofGL⁢(n){\mathrm{GL}(n)}Hecke–Maass cusp forms is newly derived. The covariance matrix is diagonal and hence verifies the statistical independence between the real and imaginary parts of the eigenvalues. We also prove a central limit theorem for the number of weighted eigenvalues in a compact region of the complex plane, and evaluate some moments of eigenvalues for the Hecke operatorTp{T_{p}}which reveal interesting interferences.
Assessment of runoff nitrogen load reduction measures for agricultural catchments
Authors: Martínková Marta , Hejduk Tomáš , Fučík Petr , Vymazal Jan , Hanel Martin 
Published: September 2018

AbstractWater quality in rural catchments is influenced by many societal and bio-physical factors (e.g. different pollution sources, land use and land cover changes). Good ecological status and surface water quality are currently challenged mainly due to different poorly identified pollution sources. The main objective of this study is to estimate the potential of different measures (land use changes and/or reduction in point sources) and their combinations in decreasing the nitrate-nitrogen load from Jankovský stream catchment. The eco-hydrological model SWIM, which simulates dynamics of nutrients in a catchment was used in the study. The simulations for scenario measures showed that nitrate-nitrogen loads at the outlet can be decreased more by reduction of municipal nitrate-nitrogen sources rather than by agricultural land-use change. Overall, the modeling results demonstrated that the most effective scenario was the combination of total reduction of municipal nitrate-nitrogen sources and agricultural land-use change.
Comparison of performing 12 weeks’ resistance training before, after and/or in between aerobic exercise on the hormonal status of aged women: a randomized controlled trial
Authors: Banitalebi Ebrahim , Faramarzi Mohammad , Bagheri Laleh , Kazemi Abdol Reza 
Published: September 2018

Abstract

Background
Physiological aging can now be considered as a multi-factorial process that is associated with anatomical and signaling changes associated with endocrine function.
The purpose of this study was to investigate the comparison of performing 12 weeks’ resistance training before, after and/or in between aerobic exercise on the hormonal status of aged women.

Materials and methods
Forty healthy aged women (age: 67.35 ± 1.40 years) were randomly divided into three training groups and a control group: resistance followed by endurance training (ER, n = 12), endurance training followed by resistance training (RE, n = 12, interval resistance-endurance (RE) training (INT, n = 12) and a control (Con, n = 12) groups. The training program was done over 12 weeks, 3 times per week. Endurance training was performed on a cycle ergometer (intensity: 60–90% maximum heart rate) and resistance training involved selected resistance exercises (intensity: 40–75 one-repetition maximum, 8–18 repeats). All participants were evaluated before and after the training period.

Results and conclusion
The data showed that performing resistance training before, after and/or in between aerobic exercise did not influence the adaptive response of insulin like growth factor-1 (IGF-1) (p = 0.07), growth hormone (p = 0.35), cortisol (p = 0.20), insulin (p = 0.72), epinephrine (p = 0.83) and norepinephrine (p = 0.86) levels throughout the study. However, when comparing pre and post, no significant differences were shown following combined training within the SE, ES and INT groups for all variables (p < 0.05), except of IGF-1 within ES (p = 0.04) and SE (p = 0.02), and testosterone within ES (p = 0.007). In conclusion, combined training with RE order may be more effective than other orders for increasing anabolic status in aged women.
Mechanisms of change of traditional mindfulness practice in Thai adolescent students: a cross-sectional mediation study
Authors: Jarukasemthawee Somboon , Pisitsungkagarn Kullaya , Leangsuksant Thanapol , González Natalia Lara 
Published: September 2018

Abstract
Given the substantial evidence for the efficacy of secular mindfulness-based interventions (MBIs) for reducing psychological distress and increasing wellbeing, research attention has more recently turned to investigating the mechanisms by which this is achieved and has revealed that MBI works not only directly on reducing distress, but also indirectly through a reduction in mediating problems such as rumination and emotional regulation difficulty. However, to the best of the authors’ knowledge, no studies have yet been undertaken to evaluate the effect on such mediating conditions, of traditional Buddhist mindfulness meditation, as practiced in Eastern cultures and increasingly in the West, from which MBIs have been derived but remain distinctly different. The current study was therefore designed to examine the effect of traditional mindfulness on mediating conditions in participants who were born into and were experienced in this approach. Specifically, the study examines the relationship between traditional mindfulness and distress, and between traditional mindfulness and the mediating conditions of rumination and emotional regulation difficulty, in Thai adolescent students experienced in Buddhist meditation practices. The results resonate well with the findings from MBI studies, showing significant negative correlations between rumination and distress and emotional regulation difficulty and distress, and significant positive correlations between mindfulness and the mediators. The implications of the benefits of traditional mindfulness for reducing non-clinical distress, rumination and difficulties in emotion regulation are discussed.
Optimization and Characterization of Wheat Bran Modified by Citric Acid Using a Dry Reaction Method for Enhancement of Methylene Blue Adsorption
Authors: Heydari Abolfazl , Daneshafruz Haniyeh , Doostan Farideh , Sheibani Hassan 
Published: September 2018

Abstract
Wheat bran is modified thermochemically through reaction with citric acid, as carboxyl groups bearing agent, according to a dry condition method at the elevated temperature. In this study, the main objectives are optimization the factors affecting on the pendant carboxylic acid groups of wheat bran–citrate, including concentration of citric acid solution (0–1.8 M), volume of citric acid solution (5.4–16.2 g), curing temperature (0–170 °C), curing time (0–90 min.), mixing method (solution mixing vs kneading) of reactants, and the catalyst effect (0–5, sodium phosphate dibasic dodecahydrate/citric acid molar ratio). The amount of pendant carboxylic acid groups is determined by simple acid-base titration. The obtained methylene blue adsorption data is well matched with the amount of pendant carboxylic acid groups in wheat bran–citrate and this amount increase with an increase in pendant carboxylic acid groups.
Melkin et les treize boules de cristal
Authors: Gouttebroze Jean-Guy 
Published: September 2018

Résumé
Dans la Cronica sive Antiquitates Glastoniensis Ecclesiae de Jean de Glastonbury, telle que l’a publiée James P. Carley, apparaît en deux endroits un texte énigmatique qu’un devin, Melkin, qui
fuit ante Merlinum, est censé avoir émis. Ce texte prophétique a sollicité la curiosité de plusieurs chercheurs, mais il reste de nombreuses zones d’ombre. Nous avons voulu, à notre tour, en donner une interprétation. Elle repose essentiellement sur la mise à jour d’un parallèle implicite, inhérent au texte, entre Glastonbury et Rome. Parallèle initié par la présence, à époque païenne, sur le site de l’abbaye, de devins qui pratiquent la cristallomancie et s’ouvrant, à la suite de la christianisation du lieu et de la découverte du tombeau de Joseph d’Arimathie, sur une perspective eschatologique qui concerne l’avenir du sanctuaire. Quand ce tombeau sera ouvert, une période de prospérité et de gràce, prédit Melkin sous une forme symbolique, s’étendra sur lui.
des willn si bêde wârn bereit:
Deviante Stimmen und wie Antikonie Handlungsautonomie postuliert
Authors: Dimpel Friedrich Michael 
Published: September 2018

Zusammenfassung
Das soziologische Konzept von deviantem Verhalten wird für die Analyse literarischer Texte erprobt. Beckers Devianz-Konzept ist anwendbar, weil es nicht auf angeblich universell gültigen Normen beruht, sondern weil eine Handlung dann als deviant betrachtet wird, wenn sie mit Blick auf die jeweils konsultierten Wertmaßstäbe als abweichend etikettiert wird. In Wolframs Parzival scheint Antikonie sich deviant zu dem zuvor etablierten Wertmaßstab ‘Keuschheit’ zu verhalten, was der Figur manch despektierliche Wertung von der älteren Forschung eingebracht hat. Fokussiert wird darauf, dass Antikonie nach der ersten Kemenatenszene für Gawan in der Ratsversammlung eintritt und danach erneut mit Gawan eine Kemenate aufsucht. Das zweite Beisammensein mit dem angeblichen Königsmörder demonstriert öffentlich sichtbar, dass die Schwester des Königs Handlungsautonomie in der Partnerwahl beansprucht. Damit wird das System der Wertmaßstäbe im Parzival transformiert. Eine flankierende digitale Studie zeigt, dass auch die Figurenrede von Antikonie deutliche Abweichungen zur Stimme von anderen Parzival-Figuren aufweist.
Flow analysis of materials in friction stir welding
Authors: Jagadeesha C.B. 
Published: September 2018

AbstractThe aim of this study was to analyze the flow behavior of materials in friction stir welding (FSW) of magnesium (Mg) alloy to aluminum (Al) alloy materials at a low rotational speed of 300 rpm and at a low welding speed of 50 mm/min. It was observed that during the dissimilar welding at 300 rpm, some of the material of the advancing side (AS) rotated almost 360° and transferred to the position just behind the previous position, i.e. initial AS position and some of the material of leading edge region transferred to the trailing edge region and such a change continued. Material transfer takes place layer by layer from front to back portions of the FSW tool; a thin layer of material adhered to the tool in the front portion for every half rotation and transferred to the back portion of the tool and this repeated in subsequent rotations. Wrinkle formation began at the front side of the forward moving tool and as the material transferred to backside they became an onion ring pattern, and this was inevitable because the formation of onion rings instantly in the backside region of the tool was clearly impossible.
Impact of Task Types on Collaborative Information Seeking Behavior
Authors: Wu Dan , Liang Shaobo , Dong Jing , Qiu Jin 
Published: September 2018

AbstractThis study examined the task type as an important factor in collaborative information seeking activities, devoting special attention to its impacts on collaborative information seeking behavior, awareness and sentiment. Collaborative information search experiments were conducted on a collaborative search system—Coagmento—for three different types of task (informational, transactional and navigational). System log, surveys and semi-structured interviews were used to collect data, with quantitative and qualitative analyses carried out on the data which related to 12 participants in four groups. Quantitative analysis employed SPSS 20, while qualitative analysis was carried out using ATLAS.ti. Through our research, we found that the task types have impact on users’ collaborative information seeking behavior in terms of web page browsing, search and image using, as well as interact with task awareness. A collaborative team approach is more suitable for completing the informational task than transactional and navigational tasks, while the task type also influences the sentiment. Concretely speaking, the transactional task causes more negative emotions.
Cuffed versus uncuffed endotracheal tubes in pediatrics: a meta-analysis
Authors: Chen Liang , Zhang Jun , Pan Guoshi , Li Xia , Shi Tianwu , He Wensheng 
Published: September 2018

Abstract

Background
Cuffed and uncuffed endotracheal tubes are commonly used for pediatric patients in surgery and emergency situations. It is still controversial which approach should be adopted. The purpose of the study was to compare the application of cuffed and uncuffed endotracheal tubes in pediatric patients.

Methods
We searched PubMed, Web of Science and Cochrane Library for clinical trials, which compared the two applications in children. The study characteristics and clinical data were summarized by two independent reviewers. Meta-analysis of the data was done using Revman 5.3 software.

Results
6 studies with 4141 cases were included in this meta-analysis. The pooling analysis showed that more patients need tube changes in uncuffed than cuffed tubes (OR: 0.07, 95% CI: 0.05-0.10, P < 0.00001). However, there were no differences on intubation duration, reintubation occurrence, accidental extubation rate, croup occurrence and racemic epinephrine use during the intubation process. Also we didn’t find any differences on laryngospasm and stridor occurrence after extubation.

Conclusions
Our study demonstrated that uncuffed endotracheal tubes increased the need for tube changes. Other incidences or complications between the two groups had no differences. Cuffed tubes may be an optimal option for pediatric patients. But more trials are needed in the future.
Thresholding for medical image segmentation for cancer using fuzzy entropy with level set algorithm
Authors: Maolood Ismail Yaqub , Al-Salhi Yahya Eneid Abdulridha , Lu Songfeng 
Published: September 2018

Abstract
In this study, an effective means for detecting cancer region through different types of medical image segmentation are presented and explained. We proposed a new method for cancer segmentation on the basis of fuzzy entropy with a level set (FELs) thresholding. The proposed method was successfully utilized to segment cancer images and then efficiently performed the segmentation of test ultrasound image, brain MRI, and dermoscopy image compared with algorithms proposed in previous studies. Results showed an excellent performance of the proposed method in detecting cancer image segmentation in terms of accuracy, precision, specificity, and sensitivity measures.
Synthesis, spectroscopic study, and crystal structure of a new organotin(IV) selenate derivative
Authors: Diallo Waly , Diop Libasse , Diop Cheikh Abdoul Khadir , Cattey Hélène , Plasseraud Laurent 
Published: September 2018

Abstract
The polymeric organotin(IV) selenate complex [(Me3Sn)3(SeO4)(OH)]n (1) has been isolated as single crystals from the reaction of [(Me2NH2)2SeO4] and Me3SnCl in methanol. In the solid state, compound 1 was characterized by X-ray diffraction analysis, Fourier transform-infrared spectroscopy, and elemental analysis. 1 crystallizes in the orthorhombic system space group Pbca with a=11.0231(2) Å, b=16.3461(3) Å, c=20.9945(4) Å, α=β=γ=90°, V=3782.89(12) Å3, and Z=8. Its structure can be described as a polymeric zigzag chain based on Me3Sn moieties linked by tridentate selenate anions. Pendant (Me3Sn)2OH groups are also connected to the chain, according to a syndiotactic organization, and via Sn-O-Se bonds. Intermolecular OH···O hydrogen bonds and long Se-O···Sn distance interactions promote the association of chains together and lead to the propagation of a three-dimensional network. In addition, the behavior of 1 in solution (methanol) was also studied by multinuclear nuclear magnetic resonance spectroscopy and mass spectrometry.
Active optical antennas driven by inelastic electron tunneling
Authors: Braun Kai , Laible Florian , Hauler Otto , Wang Xiao , Pan Anlian , Fleischer Monika , Meixner Alfred J. 
Published: September 2018

Abstract
In this review, we focus on the experimental demonstration of enhanced emission from single plasmonic tunneling junctions consisting of coupled nano antennas or noble metal tips on metallic substrates in scanning tunneling microscopy. Electromagnetic coupling between resonant plasmonic oscillations of two closely spaced noble metal particles leads to a strongly enhanced optical near field in the gap between. Electron beam lithography or wet chemical synthesis enables accurate control of the shape, aspect ratio, and gap size of the structures, which determines the spectral shape, position, and width of the plasmonic resonances. Many emerging nano-photonic technologies depend on the careful control of such localized resonances, including optical nano antennas for high-sensitivity sensors, nanoscale control of active devices, and improved photovoltaic devices. The results discussed here show how optical enhancement inside the plasmonic cavity can be further increased by a stronger localization via tunneling. Inelastic electron tunneling emission from a plasmonic junction allows for new analytical applications. Furthermore, the reviewed concepts represent the basis for novel ultra-small, fast, optically, and electronically switchable devices and could find applications in high-speed signal processing and optical telecommunications.
Asymmetric impact of uncertainty in recessions: are emerging countries more vulnerable?
Authors: Chatterjee Pratiti 
Published: September 2018

Abstract
This paper asks two questions “Does there exist heterogeneity in the response of macro variables to uncertainty shocks across advanced and emerging countries? and, “How important is the state of the economy for the effects of an uncertainty shock?. I analyze the recession-specific effects of uncertainty for a sample of 8 countries – the US, UK, France, Canada, Mexico, Chile Argentina, and South Korea. The results emphasize asymmetries along two dimensions – (1) An uncertainty shock disproportionately increases the depth and duration of a recession for an emerging country vis-

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-vis an advanced economy. Furthermore, I find that openness to trade exacerbates this decline and subsequently the pace of recovery in emerging countries in comparison to advanced economies. (2) Controlling for the state of the economy is crucial when quantifying the effects of an uncertainty shock. I show that a linear model – without regime differentiation – consistently underestimates the response of macroeconomic variables to uncertainty shocks when compared with the predictions from the recessionary regime of the nonlinear model. The extent of this under prediction is again disproportionately larger for emerging countries. The results in conjunction can potentially explain the excess volatility of macro variables for emerging countries during recessionary episodes.
Sensor-realistic simulation of images in diffraction-limited imaging systems / Sensorrealistische Simulation von Bildern in beugungsbegrenzten Abbildungssystemen
Authors: Mohammadikaji Mahsa , Bergmann Stephan , Burke Jan , Beyerer Jürgen , Dachsbacher Carsten 
Published: September 2018

Zusammenfassung
Die optische Abbildung ist der Baustein verschiedener Messsysteme, deren Abbildungsqualität unter anderem durch die Wahl der Abbildungsparameter, der Optik und des Bildsensors beeinflusst wird. Realistische Bildsimulationen können daher für die automatische Optimierung solcher Freiheitsgrade sehr vorteilhaft sein. In diesem Beitrag stellen wir ein physikalisch basiertes Modell für die Bilderzeugung vor, welches aus drei Teilen besteht: Geometrische Lichttransportsimulation mit verfügbaren Computergrafikverfahren, Einführung von Linsenabbildungseffekten mit Fourier-Optik und Integration der EMVA 1288 Sensorspezifikationen. Das vorgeschlagene Modell wurde für die Simulation der Bilder mit Speckle-Interferenz-Muster verwendet und verifiziert, indem eine gemessene Metalloberfläche von einer Laserlinie beleuchtet wird. Die Übereinstimmung der Simulationen mit realen Bildern zeigt, dass das Modell insbesondere bei beugungsbegrenzten Systemen genaue Annäherungen an die realen Bilder erzeugen kann. Zudem wird in diesem Paper der Simulationsprozess für kohärente und inkohärente Abbildungsfälle beschrieben, um Abbildungssysteme mit einer oder beiden Arten von Beleuchtungen simulieren zu können.