bluuebunny/crossref_metadata_2025 huggingface dataset:
A Comparison of Machine Learning Algorithms for Mapping of Complex Surface-Mined and Agricultural Landscapes Using ZiYuan-3 Stereo Satellite Imagery
Authors: Li Xianju , Chen Weitao , Cheng Xinwen , Wang Lizhe
Published: June 2016

Land cover mapping (LCM) in complex surface-mined and agricultural landscapes could contribute greatly to regulating mine exploitation and protecting mine geo-environments. However, there are some special and spectrally similar land covers in these landscapes which increase the difficulty in LCM when employing high spatial resolution images. There is currently no research on these mixed complex landscapes. The present study focused on LCM in such a mixed complex landscape located in Wuhan City, China. A procedure combining ZiYuan-3 (ZY-3) stereo satellite imagery, the feature selection (FS) method, and machine learning algorithms (MLAs) (random forest, RF; support vector machine, SVM; artificial neural network, ANN) was proposed and first examined for both LCM of surface-mined and agricultural landscapes (MSMAL) and classification of surface-mined land (CSML), respectively. The mean and standard deviation filters of spectral bands and topographic features derived from ZY-3 stereo images were newly introduced. Comparisons of three MLAs, including their sensitivities to FS and whether FS resulted in significant influences, were conducted for the first time in the present study. The following conclusions are drawn. Textures were of little use, and the novel features contributed to improve classification accuracy. Regarding the influence of FS: FS substantially reduced feature set (by 68% for MSMAL and 87% for CSML), and often improved classification accuracies (with an average value of 4.48% for MSMAL using three MLAs, and 11.39% for CSML using RF and SVM); FS showed statistically significant improvements except for ANN-based MSMAL; SVM was most sensitive to FS, followed by ANN and RF. Regarding comparisons of MLAs: for MSMAL based on feature subset, RF achieved the greatest overall accuracy of 77.57%, followed by SVM and ANN; for CSML, SVM had the highest accuracies (87.34%), followed by RF and ANN; based on the feature subsets, significant differences were observed for MSMAL and CSML using any pair of MLAs. In general, the proposed approach can contribute to LCM in complex surface-mined and agricultural landscapes.
Love Acoustic Wave-Based Devices and Molecularly-Imprinted Polymers as Versatile Sensors for Electronic Nose or Tongue for Cancer Monitoring
Authors: Dejous Corinne , Hallil Hamida , Raimbault Vincent , Lachaud Jean-Luc , Plano Bernard , Delépée Raphaël , Favetta Patrick , Agrofoglio Luigi , Rebière Dominique
Published: June 2016

Cancer is a leading cause of death worldwide and actual analytical techniques are restrictive in detecting it. Thus, there is still a challenge, as well as a need, for the development of quantitative non-invasive tools for the diagnosis of cancers and the follow-up care of patients. We introduce first the overall interest of electronic nose or tongue for such application of microsensors arrays with data processing in complex media, either gas (e.g., Volatile Organic Compounds or VOCs as biomarkers in breath) or liquid (e.g., modified nucleosides as urinary biomarkers). Then this is illustrated with a versatile acoustic wave transducer, functionalized with molecularly-imprinted polymers (MIP) synthesized for adenosine-5′-monophosphate (AMP) as a model for nucleosides. The device including the thin film coating is described, then static measurements with scanning electron microscopy (SEM) and electrical characterization after each step of the sensitive MIP process (deposit, removal of AMP template, capture of AMP target) demonstrate the thin film functionality. Dynamic measurements with a microfluidic setup and four targets are presented afterwards. They show a sensitivity of 5 Hz·ppm−1 of the non-optimized microsensor for AMP detection, with a specificity of three times compared to PMPA, and almost nil sensitivity to 3′AMP and CMP, in accordance with previously published results on bulk MIP.
Agroforestry—The Next Step in Sustainable and Resilient Agriculture
Authors: Wilson Matthew , Lovell Sarah
Published: June 2016

Agriculture faces the unprecedented task of feeding a world population of 9 billion people by 2050 while simultaneously avoiding harmful environmental and social effects. One effort to meet this challenge has been organic farming, with outcomes that are generally positive. However, a number of challenges remain. Organic yields lag behind those in conventional agriculture, and greenhouse gas emissions and nutrient leaching remain somewhat problematic. In this paper, we examine current organic and conventional agriculture systems and suggest that agroforestry, which is the intentional combination of trees and shrubs with crops or livestock, could be the next step in sustainable agriculture. By implementing systems that mimic nature’s functions, agroforestry has the potential to remain productive while supporting a range of ecosystem services. In this paper, we outline the common practices and products of agroforestry as well as beneficial environmental and social effects. We address barriers to agroforestry and explore potential options to alter policies and increase adoption by farmers. We conclude that agroforestry is one of the best land use strategies to contribute to food security while simultaneously limiting environmental degradation.
Modeling the Habitat of the Red-Crowned Crane (Grus japonensis) Wintering in Cheorwon-Gun to Support Decision Making
Authors: Kim Ho , Lee Eun-jae , Park Chan , Lee Ki , Lee Dong , Lee Woo-shin , Kim Jong-U
Published: June 2016

Cheorwon-gun is an important wintering area for the red-crowned crane (Grus japonensis). Although eco-tourism has been recently proposed as a means to stimulate the local economy, it may have adverse effects on the crane. We believe a science-based conservation plan is needed to mitigate these negative effects. To this end, our study had three objectives: (1) to analyze the red-crowned crane habitat and its suitability in Cheorwon-gun, using field surveys and habitat modeling; (2) to check the feasibility of alternative habitat patches across demilitarized zones (DMZs); and (3) to propose a conceptual diagram that minimizes habitat loss during development activities. We aim to quantify habitat suitability, the farmland area needed to support existing crane populations in wintertime, disturbance caused by human activities, and vehicular spatial patterns. These data could be used in spatial planning. The framework of this study and the process of making a conceptual diagram could be applied to other areas where there is a conflict between development and habitat conservation.
A Study on Life Cycle CO2 Emissions of Low-Carbon Building in South Korea
Authors: Cho Su-Hyun , Chae Chang-U
Published: June 2016

There have been much interest and many efforts to control global warming and reduce greenhouse gas (GHG) emissions throughout the world. Recently, the Republic of Korea has also increased its GHG reduction goal and searched for an implementation plan. In buildings, for example, there have been technology developments and deployment policies to reduce GHG emissions from a life cycle perspective, covering construction materials, building construction, use of buildings and waste disposal. In particular, Korea’s Green Standard for Energy and Environmental Design is a certification of environmentally-friendly buildings for their energy saving and reduction of environmental pollution throughout their lives. In fact, the demand and adoption of the certification are rising every year. In construction materials and buildings, as a result, an environmentally-friendly aspect has become crucial. The importance of construction material and building development technologies that can reduce environmental load by diminishing GHG emissions in buildings has emerged. Moreover, there has been a rising necessity to verify the GHG reduction effects of buildings. To assess the reduction of carbon emissions in the buildings built with low-carbon construction technologies and materials, therefore, this study estimated life cycle carbon emissions in reference buildings in which general construction materials are used and in low-carbon buildings. For this, the carbon emissions and their reduction from construction materials (especially concrete) between conventional products and low-carbon materials were estimated, using Life Cycle Assessment (LCA). After estimating carbon emissions from a building life cycle perspective, their reduction in low-carbon buildings compared to the reference buildings was reviewed. The results found that compared to conventional buildings, low-carbon buildings revealed a 25% decrease in carbon emissions in terms of the reduction of Life Cycle CO2 (LCCO2) per unit area. If diverse production technologies and sales routes are further developed for low-carbon construction materials, carbon emission reduction effects would considerably increase.
International Severe Weather and Flash Flood Hazard Early Warning Systems—Leveraging Coordination, Cooperation, and Partnerships through a Hydrometeorological Project in Southern Africa
Authors: Jubach Robert , Tokar A.
Published: June 2016

Climate, weather and water hazards do not recognize national boundaries. Transboundary/regional programs and cooperation are essential to reduce the loss of lives and damage to livelihoods when facing these hazards. The development and implementation of systems to provide early warnings for severe weather events such as cyclones and flash floods requires data and information sharing in real time, and coordination among the government agencies at all levels. Within a country, this includes local, municipal, provincial-to-national levels as well as regional and international entities involved in hydrometeorological services and Disaster Risk Reduction (DRR). Of key importance are the National Meteorological and Hydrologic Services (NMHSs). The NMHS is generally the authority solely responsible for issuing warnings for these hazards. However, in many regions of the world, the linkages and interfaces between the NMHS and other agencies are weak or non-existent. Therefore, there is a critical need to assess, strengthen, and formalize collaborations when addressing the concept of reducing risk and impacts from severe weather and floods. The U.S. Agency for International Development/Office of U.S. Foreign Disaster Assistance; the United Nations World Meteorological Organization (WMO); the WMO Southern Africa Regional Specialized Meteorological Center, hosted by the South African Weather Service; the U.S. National Oceanic and Atmospheric Administration/National Weather Service and the Hydrologic Research Center (a non-profit corporation) are currently implementing a project working with Southern Africa NMHSs on addressing this gap. The project aims to strengthen coordination and collaboration mechanisms from national to local levels. The project partners are working with the NMHSs to apply and implement appropriate tools and infrastructure to enhance currently operational severe weather and flash flood early warning systems in each country in support of delivery and communication of warnings for the DRR entities at the regional, national and local levels in order to reduce the loss of life and property.
Creation of an SWMM Toolkit for Its Application in Urban Drainage Networks Optimization
Authors: Martínez-Solano F. , Iglesias-Rey Pedro , Saldarriaga Juan , Vallejo Daniel
Published: June 2016

The Storm Water Management Model (SWMM) is a dynamic simulation engine of flow in sewer systems developed by the USEPA. It has been successfully used for analyzing and designing both storm water and waste water systems. However, despite including some interfacing functions, these functions are insufficient for certain simulations. This paper describes some new functions that have been added to the existing ones to form a library of functions (Toolkit). The Toolkit presented here will allow the direct modification of network data during simulation without the need to access the input file. To support the use of this library, a testing protocol was performed in order to evaluate both calculation time and accuracy of results. Finally, a case study is presented. In this application, this library will be used for the design of a sewerage network by using a genetic algorithm based on successive iterations.
Expert Knowledge for Modeling Functional Health from Sensor Data
Authors: Pol Margriet , Buurman Bianca , Kröse Ben , Robben Saskia
Published: June 2016

Background: ICT based solutions are increasingly introduced for active and healthy ageing. In this context continuous monitoring of older adults with domestic sensor systems has been suggested to provide important information about their functional health. However, there is not yet a solid model for the interpretation of the sensor data.

Objectives: The aim of our study is to define a set of predictors of functional health that can be measured with domestic sensors and to determine thresholds that identify relevant changes in these predictors.

Methods: On the basis of literature we develop a model that relates functional health predictors to features derived from sensor data. The parameters of this model are determined on the basis of a study among health experts (n = 38). The use of the full model is illustrated with three cases.

Results: We identified 25 predictors and their attributes. For 12 of them that can be measured with passive infrared motion sensors we determined their parameters: the attribute thresholds and the urgency thresholds.

Conclusions: With the parametrized predictors in the model, domestic sensors can be deployed to assess functional health in a standardized way. Three case examples showed how the model can be used as a screening instrument for functional decline.
The Importance of Context: Risk-based De-identification of Biomedical Data
Authors: Kuhn Klaus , Prasser Fabian , Kohlmayer Florian
Published: June 2016

Background: Data sharing is a central aspect of modern biomedical research. It is accompanied by significant privacy concerns and often data needs to be protected from re-identification. With methods of de-identification datasets can be transformed in such a way that it becomes extremely difficult to link their records to identified individuals. The most important challenge in this process is to find an adequate balance between an increase in privacy and a decrease in data quality.

Objectives: Accurately measuring the risk of re-identification in a specific data sharing scenario is an important aspect of data de-identification. Overestimation of risks will significantly deteriorate data quality, while underestimation will leave data prone to attacks on privacy. Several models have been proposed for measuring risks, but there is a lack of generic methods for risk-based data de-identification. The aim of the work described in this article was to bridge this gap and to show how the quality of de-identified datasets can be improved by using risk models to tailor the process of de-identification to a concrete context.

Methods: We implemented a generic de-identification process and several models for measuring re-identification risks into the ARX de-identification tool for biomedical data. By integrating the methods into an existing framework, we were able to automatically transform datasets in such a way that information loss is minimized while it is ensured that re-identification risks meet a user-defined threshold. We performed an extensive experimental evaluation to analyze the impact of using different risk models and assumptions about the goals and the background knowledge of an attacker on the quality of de-identified data.

Results: The results of our experiments show that data quality can be improved significantly by using risk models for data de-identification. On a scale where 100 % represents the original input dataset and 0 % represents a dataset from which all information has been removed, the loss of information content could be reduced by up to 10 % when protecting datasets against strong adversaries and by up to 24 % when protecting datasets against weaker adversaries.

Conclusions: The methods studied in this article are well suited for protecting sensitive biomedical data and our implementation is available as open-source software. Our results can be used by data custodians to increase the information content of de-identified data by tailoring the process to a specific data sharing scenario. Improving data quality is important for fostering the adoption of de-identification methods in biomedical research.
ORBITS OF SUBSYSTEMS IN FOUR HIERARCHICAL MULTIPLE STARS
Authors: Tokovinin Andrei
Published: June 2016

Seven spectroscopic orbits in nearby solar-type multiple stars are presented. The primary of the chromospherically active star HIP 9642 is a 4.8 day double-lined pair; the outer 420 year visual orbit is updated, but remains poorly constrained. HIP 12780 is a quadruple system consisting of the resolved 6.7 year pair FIN 379 Aa,Ab, for which the combined orbit, masses, and orbital parallax are determined here, and the single-lined binary Ba,Bb with a period of 27.8 days. HIP 28790 is a young quintuple system composed of two close binaries, Aa,Ab and Ba,Bb, with periods of 221 and 13 days, respectively, and a single distant component C. Its subsystem Ba,Bb is peculiar, having a spectroscopic mass ratio of 0.89 but a magnitude difference of ∼2.2 mag. HIP 64478 also contains five stars: the A-component is a 29 year visual pair with a previously known 4 day twin subsystem, while the B-component is a contact binary with a period of 5.8 hr, seen nearly pole-on.
ORBITS OF FOUR YOUNG TRIPLE-LINED MULTIPLE SYSTEMS
Authors: Tokovinin Andrei
Published: June 2016

Each of the nearby triple systems HIP 7601, 13498, 23824, and 113597 (HD 10800, 18198, 35877, 217379) consist of solar-type dwarfs with comparable masses, where all three components are resolved spectrally, while the outer pairs are resolved both visually and spectrally. These stars are relatively young (between 100 and 600 Myr) and chromospherically active (X-ray sources), although they rotate slowly. I determine the spectroscopic orbits of the inner subsystems (periods 19.4, 14.1, 5.6, 20.3 days) and the orbits of the outer systems (periods 1.75, 51, 27, 500 years, respectively). For HIP 7601 and 13498, the combined spectro-interferometric outer orbits produce direct measurement of the masses of all of the components, allowing for a comparison with stellar models. The 6708 Å lithium line is present and its strength is measured in each component individually by subtracting the contributions of the other components. The inner and outer orbits of HIP 7601 are nearly circular, likely co-planar, and have a modest period ratio of 1:33. This study contributes to the characterization of hierarchical multiplicity in the solar neighborhood and provides data for testing stellar evolutionary models and chronology.
THE IMPACT OF STELLAR MULTIPLICITY ON PLANETARY SYSTEMS. I. THE RUINOUS INFLUENCE OF CLOSE BINARY COMPANIONS
Authors: Kraus Adam L. , Ireland Michael J. , Huber Daniel , Mann Andrew W. , Dupuy Trent J.
Published: June 2016

The dynamical influence of binary companions is expected to profoundly influence planetary systems. However, the difficulty of identifying planets in binary systems has left the magnitude of this effect uncertain; despite numerous theoretical hurdles to their formation and survival, at least some binary systems clearly host planets. We present high-resolution imaging of 382 Kepler Objects of Interest (KOIs) obtained using adaptive-optics imaging and nonredundant aperture-mask interferometry on the Keck II telescope. Among the full sample of 506 candidate binary companions to KOIs, we super-resolve some binary systems to projected separations of <5 au, showing that planets might form in these dynamically active environments. However, the full distribution of projected separations for our planet-host sample more broadly reveals a deep paucity of binary companions at solar-system scales. For a field binary population, we should have found 58 binary companions with projected separation ρ < 50 au and mass ratio q > 0.4; we instead only found 23 companions (a 4.6σ deficit), many of which must be wider pairs that are only close in projection. When the binary population is parametrized with a semimajor axis cutoff a
cut and a suppression factor inside that cutoff S
bin, we find with correlated uncertainties that inside

au, the planet occurrence rate in binary systems is only

times that of wider binaries or single stars. Our results demonstrate that a fifth of all solar-type stars in the Milky Way are disallowed from hosting planetary systems due to the influence of a binary companion.
MULTIPLEXING PRECISION RVs: SEARCHING FOR CLOSE-IN GAS GIANTS IN OPEN CLUSTERS
Authors: Bailey III John I. , Mateo Mario , White Russel J. , Shectman Stephen A. , Crane Jeffrey D. , Olszewski Edward W.
Published: June 2016

We present a multiplexed high-resolution (R ∼ 50,000 median) spectroscopic survey designed to detect exoplanet candidates in two southern star clusters (NGC 2516 and NGC 2422) using the Michigan/Magellan Fiber System (M2FS) on the Magellan/Clay telescope at Las Campanas Observatory. With 128 available fibers in our observing mode, we are able to target every star in the core half-degree of each cluster that could plausibly be a solar-analog member. Our template-based spectral fits provide precise measurements of fundamental stellar properties—T
eff (±30 K), [Fe/H] and [α/Fe] (±0.02 dex), and

(±0.3 km s−1)—and radial velocities (RVs) by using telluric absorption features from 7160 to 7290 Å as a wavelength reference for 251 mid-F to mid-K stars (126 in NGC 2516 and 125 in NGC 2422) that comprise our survey. In each cluster, we have obtained ∼10–12 epochs of our targets. Using repeat observations of an RV standard star, we show our approach can attain a single-epoch velocity precision of 25–60 m s−1 over a broad range of signal-to-noise ratios throughout our observational baseline of 1.1 years. Our technique is suitable for nonrapidly rotating stars cooler than mid-F. In this paper, we describe our observational sample and analysis methodology and present a detailed study of the attainable precision and measurement capabilities of our approach. Subsequent papers will provide results for stars observed in the target clusters, analyze our data set of RV time series for stellar jitter and stellar and substellar companions, and consider the implications of our findings on the clusters themselves.
THE MUSCLES TREASURY SURVEY. III. X-RAY TO INFRARED SPECTRA OF 11 M AND K STARS HOSTING PLANETS
Authors: P. Loyd R. O. , France Kevin , Youngblood Allison , Schneider Christian , Brown Alexander , Hu Renyu , Linsky Jeffrey , Froning Cynthia S. , Redfield Seth , Rugheimer Sarah , Tian Feng
Published: June 2016

We present a catalog of panchromatic spectral energy distributions (SEDs) for 7 M and 4 K dwarf stars that span X-ray to infrared wavelengths (5 Å –5.5 μm). These SEDs are composites of Chandra or XMM-Newton data from 5–∼50 Å, a plasma emission model from ∼50–100 Å, broadband empirical estimates from 100–1170 Å, Hubble Space Telescope data from 1170–5700 Å, including a reconstruction of stellar Lyα emission at 1215.67 Å, and a PHOENIX model spectrum from 5700–55000 Å. Using these SEDs, we computed the photodissociation rates of several molecules prevalent in planetary atmospheres when exposed to each star’s unattenuated flux (“unshielded” photodissociation rates) and found that rates differ among stars by over an order of magnitude for most molecules. In general, the same spectral regions drive unshielded photodissociations both for the minimally and maximally FUV active stars. However, for O3 visible flux drives dissociation for the M stars whereas near-UV flux drives dissociation for the K stars. We also searched for an far-UV continuum in the assembled SEDs and detected it in 5/11 stars, where it contributes around 10% of the flux in the range spanned by the continuum bands. An ultraviolet continuum shape is resolved for the star

ϵ

Eri that shows an edge likely attributable to Si ii recombination. The 11 SEDs presented in this paper, available online through the Mikulski Archive for Space Telescopes, will be valuable for vetting stellar upper-atmosphere emission models and simulating photochemistry in exoplanet atmospheres.
SOLUBILITY OF ROCK IN STEAM ATMOSPHERES OF PLANETS
Authors: Fegley Bruce , Jacobson Nathan S. , Williams K. B. , Plane J. M. C. , Schaefer L. , Lodders Katharina
Published: June 2016

Extensive experimental studies show that all major rock-forming elements (e.g., Si, Mg, Fe, Ca, Al, Na, K) dissolve in steam to a greater or lesser extent. We use these results to compute chemical equilibrium abundances of rocky-element-bearing gases in steam atmospheres equilibrated with silicate magma oceans. Rocky elements partition into steam atmospheres as volatile hydroxide gases (e.g., Si(OH)4, Mg(OH)2, Fe(OH)2, Ni(OH)2, Al(OH)3, Ca(OH)2, NaOH, KOH) and via reaction with HF and HCl as volatile halide gases (e.g., NaCl, KCl, CaFOH, CaClOH, FAl(OH)2) in much larger amounts than expected from their vapor pressures over volatile-free solid or molten rock at high temperatures expected for steam atmospheres on the early Earth and hot rocky exoplanets. We quantitatively compute the extent of fractional vaporization by defining gas/magma distribution coefficients and show that Earth's subsolar Si/Mg ratio may be due to loss of a primordial steam atmosphere. We conclude that hot rocky exoplanets that are undergoing or have undergone escape of steam-bearing atmospheres may experience fractional vaporization and loss of Si, Mg, Fe, Ni, Al, Ca, Na, and K. This loss can modify their bulk composition, density, heat balance, and interior structure.
SPENDING TOO MUCH TIME AT THE GALACTIC BAR: CHAOTIC FANNING OF THE OPHIUCHUS STREAM
Authors: Price-Whelan Adrian M. , Sesar Branimir , Johnston Kathryn V. , Rix Hans-Walter
Published: June 2016

The Ophiuchus stellar stream is peculiar: (1) its length is short given the age of its constituent stars, and (2) several probable member stars have dispersions in sky position and velocity that far exceed those seen within the stream. The stream’s proximity to the Galactic center suggests that its dynamical history is significantly influenced by the Galactic bar. We explore this hypothesis with models of stream formation along orbits consistent with Ophiuchus’ properties in a Milky Way potential model that includes a rotating bar. In all choices for the rotation parameters of the bar, orbits fit to the stream are strongly chaotic. Mock streams generated along these orbits qualitatively match the observed properties of the stream: because of chaos, stars stripped early generally form low-density, high-dispersion “fans” leaving only the most recently disrupted material detectable as a strong over-density. Our models predict that there should be a significant amount of low-surface-brightness tidal debris around the stream with a complex phase-space morphology. The existence of or lack of these features could provide interesting constraints on the Milky Way bar and would rule out formation scenarios for the stream. This is the first time that chaos has been used to explain the properties of a stellar stream and is the first demonstration of the dynamical importance of chaos in the Galactic halo. The existence of long, thin streams around the Milky Way, presumably formed along non- or weakly chaotic orbits, may represent only a subset of the total population of disrupted satellites.
A HARD X-RAY STUDY OF THE NORMAL STAR-FORMING GALAXY M83 WITH NuSTAR
Authors: Yukita M. , Hornschemeier A. E. , Lehmer B. D. , Ptak A. , Wik D. R. , Zezas A. , Antoniou V. , Maccarone T. J. , Replicon V. , Tyler J. B. , Venters T. , Argo M. K. , Bechtol K. , Boggs S. , Christensen F. E. , Craig W. W. , Hailey C. , Harrison F. , Krivonos R. , Kuntz K. , Stern D. , Zhang W. W.
Published: June 2016

We present the results from sensitive, multi-epoch NuSTAR observations of the late-type star-forming galaxy M83 (d = 4.6 Mpc). This is the first investigation to spatially resolve the hard (

E
>
10

keV) X-ray emission of this galaxy. The nuclear region and ∼20 off-nuclear point sources, including a previously discovered ultraluminous X-ray source, are detected in our NuSTAR observations. The X-ray hardnesses and luminosities of the majority of the point sources are consistent with hard X-ray sources resolved in the starburst galaxy NGC 253. We infer that the hard X-ray emission is most likely dominated by intermediate accretion state black hole binaries and neutron star low-mass X-ray binaries (Z-sources). We construct the X-ray binary luminosity function (XLF) in the NuSTAR band for an extragalactic environment for the first time. The M83 XLF has a steeper XLF than the X-ray binary XLF in NGC 253, which is consistent with previous measurements by Chandra at softer X-ray energies. The NuSTAR integrated galaxy spectrum of M83 drops quickly above 10 keV, which is also seen in the starburst galaxies NGC 253, NGC 3310, and NGC 3256. The NuSTAR observations constrain any active galactic nucleus (AGN) to be either highly obscured or to have an extremely low luminosity of ≲1038 erg s−1 (10–30 keV), implying that it is emitting at a very low Eddington ratio. An X-ray point source that is consistent with the location of the nuclear star cluster with an X-ray luminosity of a few times 1038 erg s−1 may be a low-luminosity AGN but is more consistent with being an X-ray binary.
IMAGING THE ELUSIVE H-POOR GAS IN THE HIGH adf PLANETARY NEBULA NGC 6778
Authors: García-Rojas Jorge , Corradi Romano L. M. , Monteiro Hektor , Jones David , Rodríguez-Gil Pablo , Cabrera-Lavers Antonio
Published: June 2016

We present the first direct image of the high-metallicity gas component in a planetary nebula (NGC 6778), taken with the OSIRIS Blue Tunable Filter centered on the O ii
λ4649+50 Å optical recombination lines (ORLs) at the 10.4 m Gran Telescopio Canarias. We show that the emission of these faint O ii ORLs is concentrated in the central parts of the planetary nebula and is not spatially coincident either with emission coming from the bright [O iii] λ5007 Å collisionally excited line (CEL) or the bright Hα recombination line. From monochromatic emission line maps taken with VIMOS at the 8.2 m Very Large Telescope, we find that the spatial distribution of the emission from the auroral [O iii] λ4363 line resembles that of the O ii ORLs but differs from nebular [O iii] λ5007 CEL distribution, implying a temperature gradient inside the planetary nebula. The centrally peaked distribution of the O ii emission and the differences with the [O iii] and H i emission profiles are consistent with the presence of an H-poor gas whose origin may be linked to the binarity of the central star. However, determination of the spatial distribution of the ORLs and CELs in other PNe and a comparison of their dynamics are needed to further constrain the geometry and ejection mechanism of the metal-rich (H-poor) component and hence, understand the origin of the abundance discrepancy problem in PNe.
Operational Art in Army of the Czech Republic from Perspective of Participants in Career Courses for Higher Officers. Criticism, Argumentation, and Recommendation
Authors: Spišák Ján , Rak Tomáš
Published: June 2016

The primary mission of commanders and staffs is a skillful realization of all measures related to preparation, planning, conduct and control of military operations. Ability to implement these measures originates from their professional knowledge of the theory of operational art and capability to execute it in practice. Based on a feedback from the courses participants, the authors of the article propose a set of measures which may contribute not only to improvement of the level of knowledge, skills and competences of military personal, but also to increase interest in the overall development of operational art in the Czech Armed Forces.
SWOT Analysis in the Sector of Defense of Czech Republic - Current State and Recommendation for Application
Authors: Grasseová-Motyčková Monika , Richter Jiří
Published: June 2016

V článku jsou prezentovány dílčí závěry a poznatky z dotazníkového šetření a polostrukturovaných rozhovorů na jednu z oblastí řešení problémů v rezortu obrany, a to využívaní metod, metodik a heuristik, realizovaných v roce 2012 a 2015. V článku je analyzována jedna z metod strategické analýzy, konkrétně SWOT analýza. Nejprve je charakterizována SWOT analýza z hlediska doporučení pro její praktickou aplikaci, tak jak vyplývá z rešerše odborných publikací. Následně je prezentována SWOT analýza z hlediska jejího využití v rezortu obrany. Na základě zjištěných informací jsou v závěru článku definována doporučení pro praktickou aplikaci SWOT analýzy nejen v rezortu obrany ČR.
La influencia del género y de la formación académica en la intención de emprender de los estudiantes de ciencias de la actividad física y el deporte
Authors: González Serrano María Huertas , Valantine Irena , Pérez Campos Carlos , Aguado Berenguer Sergio , Calabuig Moreno Ferran , Crespo Hervás Josep Joan
Published: June 2016

Purpose: The objective of this article is to know if there are differences in the variables that explain the entrepreneurial intention of the Physical Activity and Sport Science students addressing academic training and gender of them.Design/methodology/approach: To know entrepreneurial intentions and the different variables related to entrepreneurship, a questionnaire previously validated was used. The questionnaire was provided to 578 students pre-graduated (1st-4th course) and post-graduate of Physical Activity and Sport Science degree of Valencia.Findings: Statistically significant differences (p ≤ 0.05) in the variables that predict entrepreneurial intention of Physical Activity and Sport Science students by gender and training were found. In both genders, the attitude towards entrepreneurship and the perceived behavior control were the predictors of entrepreneurial intentions and in men also the subjective norms.Research limitations/implications: The students sample belongs only to the Physical Activity and Sport Science degree of Valencia, so the results cannot be extrapolated to the entire population.Practical implications: It should be developing the attitude toward the behavior of entrepreneurship and perceived behavioral control to promote entrepreneurship. In this way, the graduates will be more prepare for insertion into the working world.Social implications: To increase the number of entrepreneurs (male and female) in the sports sector throughout the education, reducing the gender gap in entrepreneurship and improve the quality of entrepreneurship, as this is a key issue because of the positive impact that this phenomenon generates on the economyOriginality/value: It is interesting to know the predictor variables of entrepreneurial intentions, and to know if there are differences based on education and gender due to the massive entry of women into the sport workplaces and low intention to undertake of the. So it is quite important training in the best way, both graduates (male and female) with entrepreneurial skills.
Impacto económico del Campeonato del Mundo de Escalada. Gijón 8-14 de Septiembre del 2014
Authors: Baños José , Rodríguez Plácido
Published: June 2016

Purpose: This study aims to assess the economic impact for the economy of the Principality of Asturias, of the World Climbing Championship held in Gijon in 2014.Design/methodology/approach: Various instruments are available to assess the economic impact of a sporting event in a city or region. Among them is the Input-Output (I-O) analysis, which is used in this study.Findings: We analyse the economic impacts of the expenditure by non-residents in the Principality of Asturias in a comprehensive study that categorises the individuals attending the Championship according to their accommodation choice and to different visitor categories (i.e. athletes, technicians, managers, etc.). The study also takes into account the expenditure on infrastructure and organization incurred by the organizer of the competition: the City Council of Gijon. The economic impact on the economy of Asturias of the 2014 World Climbing Championship held in Gijón is calculated in terms of the Gross Value Added (GVA).Originality/value: When a public institution organizes an activity, an assessment of whether the expenditure has an economic return or leads to an unjustifiable expenditure of public money, is required.
¿La transparencia de las páginas web ayudan en la captación de clientes? Análisis de los campos de golf en Andalucía
Authors: García-Tascón Marta , Pradas-García Marcos
Published: June 2016

Purpose: The aim of this study is to analyze the degree of transparency of the Web pages of organizations that belong to the world of sports, specifically golf courses in Andalusia.Design/methodology/approach: We performed a descriptive analysis of the conditions of transparency of 92 Web pages of golf clubs registered on the official website of the Royal Golf Federation of Andalusia (RFGA). A questionnaire created/adapted ad hoc is used for this study having as a reference the questionnaire used by Barrio and Martin (2012) that analyze the performance of the 4 conditions of transparency of Web pages.Findings: To reflect a high degree of transparency, they show a higher compliance than 75% in 8 of the 10 variables. The Web page becomes an element to quantify the performance of the field without investing too much in other promotional channels to attract as many customers as possible.Research limitations: In some Web pages, the access to information entailed a significant investment of time because they did not have the characteristic of being intuitive. In some cases was not available all required information.Practical implications: Knowledge of this information allows the director or manager identifies possible areas of improvement to optimize their management, while transparency offered by the golf courses is improved.Social implications: This study highlights the need for teaching the user to evaluate the quality, transparency and being critical with the information found on Web pages.Originality/value: The analysis of transparency allows clubs to be reflective of its golf courses. It becomes the tool that the manager can use to display part of all its virtues and to evaluate the social behavior of their customers, to attract possible clients and perform actions with the stakeholders in the golf industry.
Patient Comorbidity Status and Incremental Total Hospitalization Costs in Elective Orthopedic Procedures
Authors: Nichols Christine I. , Vose Joshua G.
Published: June 2016

This study examined the correlation between patient comorbidity status, hospitalization length of stay (LOS), and cost for total knee arthroplasty (TKA), total hip arthroplasty (THA), and 1- to 3-level lumbar spinal fusion procedures. Using the Premier Perspective Database, adults older than 18 years who underwent primary unilateral TKA, THA, or spinal fusion between January 1, 2008, and June 30, 2014, were identified. Generalized linear models controlling for age, sex, region, hospital size, academic status, payor, and procedure year predicted the incremental total hospitalization cost among the sickest patients (Charlson Comorbidity Index [CCI] ≥3) vs healthy controls (CCI=0). The study cohort included 536,582 TKAs, 275,953 THAs, and 177,493 spinal fusion procedures. The percentages of patients with a CCI of 3 or greater were 5.4%, 4.7%, and 4.3%, for TKA, THA, and spinal fusion procedures, respectively. Mean (SD) LOS was longer by 0.9 (1.5), 1.4 (2.3), and 2.3 (3.8) days for patients with a CCI of 3 or greater vs 0 for TKA, THA, and spinal fusion procedures, respectively. Unadjusted total hospitalization costs were $17,512 for TKA, $18,915 for THA, and $32,932 for spinal fusion procedures; generalized linear models showed an incremental total hospitalization cost for CCI scores of 3 or greater of $2211, $3041, and $3922 vs CCI equal to 0 for each procedure type, respectively. Although representing a relatively small proportion of all patients undergoing elective orthopedic procedures, highly comorbid patients were associated with a greater total hospitalization cost burden. With the average patient comorbidity burden growing nationally, this study warrants further examination of improved standards of care for comorbid patients undergoing elective orthopedic procedures. [
Orthopedics.
2016; 39(4):237–246.]
Recurrence After Marginal Excision for Atypical Lipomatous Tumors Versus Lipomas of the Extremities
Authors: Errani Costantino , Cocchi Stefania , Ali Nikolin , Chehrassan Mohammadreza , Righi Alberto , Gambarotti Marco , Mavrogenis Andreas F. , Vanel Daniel , Donati Davide
Published: June 2016

This study reviewed the medical records of 90 patients with lipomas (47 patients) and atypical lipomatous tumors (ALT)/well-differentiated liposarcomas (WDL) (43 patients) of the extremities treated from 2006 to 2012. All patients had preoperative biopsy and postoperative histologic analysis of the tumors; surgical margins were marginal in all cases. Histologic sections of the tissue blocks from the excised specimens were re-reviewed for all patients; a consensus with postoperative histologic analysis was confirmed. Molecular chromosome analysis was performed on fluorescence in situ hybridization in tissue sections from the tissue blocks in all cases for the purpose of this study; a ratio greater than 2 was considered to represent murine double-minute 2 (MDM2) amplification consistent with a diagnosis of ALT/WDL. Mean follow-up was 52 months (range, 14–96 months). Local recurrence and metastasis rates and the relationship of patient age and sex with tumor size and location were evaluated. None of the patients with lipomas experienced local recurrence compared with 6 patients (13.9%) with ALT/WDL who experienced local recurrence within a mean of 48 months (range, 33–96 months); this difference was statistically significant. None of the patients in either group experienced metastasis prior to the study period. Local recurrence did not correlate statistically with patient age or sex, or with tumor size or location. [
Orthopedics.
2016; 39(4):e610–e614.]
Cost Analysis of Hemiarthroplasty Versus Reverse Shoulder Arthroplasty for Fractures
Authors: Solomon Jason A. , Joseph Sheeba M. , Shishani Yousef , Victoroff Brian N. , Wilber John H. , Gobezie Reuben , Gillespie Robert J.
Published: June 2016

Complex proximal humerus fractures in older patients can be treated with hemiarthroplasty (HA) or reverse shoulder arthroplasty (RSA), with both providing good pain relief and function. This study compared the costs, complications, and outcomes of HA vs RSA after proximal humerus fracture in older patients. Patients 65 years or older who were admitted between January 2007 and August 2011 with a 3- or 4-part proximal humerus fracture and treated with HA or RSA were identified. Surgeries were performed at the same institution by 1 of 3 surgeons trained in trauma or shoulder surgery. Operating room costs, implant costs, total costs to the patient and hospital, and range of motion were compared. In the study group, 8 patients (7 women and 1 man; mean age, 77 years) received HA and 16 patients (13 women and 3 men; mean age, 77 years) received RSA. Hemiarthroplasty implant cost and operating room cost were $9140 and $8900 less than those of RSA, respectively (
P
<.001). The total cost to the patient was $33,480 for HA vs $57,000 for RSA (
P
<.001) with no difference in admission length, transfusion requirements, or final range of motion. In patients with complex proximal humerus fractures, RSA restored function similar to HA and resulted in better pain and outcome scores. However, RSA had a significantly higher cost to both the patient and the hospital compared with HA. Further investigation of postsurgical rehabilitation costs, skilled nursing needs, or revision surgery will elucidate whether there is long-term functional or financial benefits to RSA over HA. [
Orthopedics.
2016; 39(4):230–234.]
Vascular Injury in Orthopedic Trauma
Authors: Mavrogenis Andreas F. , Panagopoulos George N. , Kokkalis Zinon T. , Koulouvaris Panayiotis , Megaloikonomos Panayiotis D. , Igoumenou Vasilios , Mantas George , Moulakakis Konstantinos G. , Sfyroeras George S. , Lazaris Andreas , Soucacos Panayotis N.
Published: June 2016

Vascular injury in orthopedic trauma is challenging. The risk to life and limb can be high, and clinical signs initially can be subtle. Recognition and management should be a critical skill for every orthopedic surgeon. There are 5 types of vascular injury: intimal injury (flaps, disruptions, or subintimal/intramural hematomas), complete wall defects with pseudoaneurysms or hemorrhage, complete transections with hemorrhage or occlusion, arteriovenous fistulas, and spasm. Intimal defects and subintimal hematomas with possible secondary occlusion are most commonly associated with blunt trauma, whereas wall defects, complete transections, and arteriovenous fistulas usually occur with penetrating trauma. Spasm can occur after either blunt or penetrating trauma to an extremity and is more common in young patients. Clinical presentation of vascular injury may not be straightforward. Physical examination can be misleading or initially unimpressive; a normal pulse examination may be present in 5% to 15% of patients with vascular injury. Detection and treatment of vascular injuries should take place within the context of the overall resuscitation of the patient according to the established principles of the Advanced Trauma Life Support (ATLS) protocols. Advances in the field, made mostly during times of war, have made limb salvage the rule rather than the exception. Teamwork, familiarity with the often subtle signs of vascular injuries, a high index of suspicion, effective communication, appropriate use of imaging modalities, sound knowledge of relevant technique, and sequence of surgical repairs are among the essential factors that will lead to a successful outcome. This article provides a comprehensive literature review on a subject that generates significant controversy and confusion among clinicians involved in the care of trauma patients. [
Orthopedics.
2016; 39(4):249–259.]
An Empirical Study of NoSQL Databases for Big Data
Authors: Hu Wen-Chen , Kaabouch Naima , Guo Hongyu , Yang Hung-Jen
Published: June 2016

Relational databases have dominated the database markets for decades because they perform extremely well for traditional applications like electronic commerce and inventory systems. However, the relational databases do not suit some of the contemporary applications such as big data and cloud computing well because of various reasons like their low scalability and unable to handle a high volume of data. NoSQL (not only SQL) databases are part of the solution for developing those newer applications. The approach they use is different from the one used by relational databases. This chapter discusses NoSQL databases by using an empirical instead of theoretical approach. Other than introducing the types and features of generic NoSQL databases, practical NoSQL database programming and usage are shown by using MongoDB, a NoSQL database. A summary of this research is given at the end of this chapter.