bluuebunny/crossref_metadata_2025_split huggingface dataset:
FROM ORDER TO CHAOS IN EARTH SATELLITE ORBITS
Authors: Gkolias Ioannis , Daquin Jérôme , Gachet Fabien , Rosengren Aaron J. 
Published: October 2016

ABSTRACT
We consider Earth satellite orbits in the range of semimajor axes where the perturbing effects of Earth’s oblateness and lunisolar gravity are of comparable order. This range covers the medium-Earth orbits (MEO) of the Global Navigation Satellite Systems and the geosynchronous orbits (GEO) of the communication satellites. We recall a secular and quadrupolar model, based on the Milankovitch vector formulation of perturbation theory, which governs the long-term orbital evolution subject to the predominant gravitational interactions. We study the global dynamics of this two-and-a-half degrees-of-freedom Hamiltonian system by means of the fast Lyapunov indicator (FLI), used in a statistical sense. Specifically, we characterize the degree of chaoticity of the action space using angle-averaged normalized FLI maps, thereby overcoming the angle dependencies of the conventional stability maps. Emphasis is placed upon the phase-space structures near secular resonances, which are of primary importance to the space debris community. We confirm and quantify the transition from order to chaos in MEO, stemming from the critical inclinations and find that highly inclined GEO orbits are particularly unstable. Despite their reputed normality, Earth satellite orbits can possess an extraordinarily rich spectrum of dynamical behaviors and, from a mathematical perspective, have all the complications that make them very interesting candidates for testing the modern tools of chaos theory.
THE SECOND ARECIBO SEARCH FOR 5 GHz RADIO FLARES FROM ULTRACOOL DWARFS
Authors: Route Matthew , Wolszczan Alexander 
Published: October 2016

ABSTRACT
We describe our second installment of the 4.75 GHz survey of ultracool dwarfs (UCDs) conducted with the Arecibo radio telescope, which has observed 27 such objects and resulted in the detection of sporadic flaring from the T6 dwarf, WISEPC J112254.73+255021.5. We also present follow-up observations of the first radio-emitting T dwarf, 2MASS J10475385+2124234, a tentatively identified radio-emitting L1 dwarf, 2MASS J1439284+192915, and the known radio-flaring source, 2MASS J13142039+132011 AB. Our new data indicate that 2MASS J1439284+192915 is not a radio-flaring source. The overall detection rate of our unbiased survey for radio-flaring UCDs is ∼5% for new sources, with a detection rate for each spectral class of ∼5%–10%. Evidently, radio luminosity of the UCDs does not appear to monotonically decline with spectral type from M7 dwarfs to giant planets, contradictory to theories of the magnetic field generation and the internal structure of these objects. Along with other, recently published results, our data exemplify the unique value of using radio surveys to reveal and study properties of substellar magnetic activity.
THE TEMPERATURE EFFECT IN SECONDARY COSMIC RAYS (MUONS) OBSERVED AT THE GROUND: ANALYSIS OF THE GLOBAL MUON DETECTOR NETWORK DATA
Authors: de Mendonça R. R. S. , Braga C. R. , Echer E. , Dal Lago A. , Munakata K. , Kuwabara T. , Kozai M. , Kato C. , Rockenbach M. , Schuch N. J. , Al Jassar H. K. , Sharma M. M. , Tokumaru M. , Duldig M. L. , Humble J. E. , Evenson P. , Sabbah I. 
Published: October 2016

ABSTRACT
The analysis of cosmic ray intensity variation seen by muon detectors at Earth's surface can help us to understand astrophysical, solar, interplanetary and geomagnetic phenomena. However, before comparing cosmic ray intensity variations with extraterrestrial phenomena, it is necessary to take into account atmospheric effects such as the temperature effect. In this work, we analyzed this effect on the Global Muon Detector Network (GMDN), which is composed of four ground-based detectors, two in the northern hemisphere and two in the southern hemisphere. In general, we found a higher temperature influence on detectors located in the northern hemisphere. Besides that, we noticed that the seasonal temperature variation observed at the ground and at the altitude of maximum muon production are in antiphase for all GMDN locations (low-latitude regions). In this way, contrary to what is expected in high-latitude regions, the ground muon intensity decrease occurring during summertime would be related to both parts of the temperature effect (the negative and the positive). We analyzed several methods to describe the temperature effect on cosmic ray intensity. We found that the mass weighted method is the one that best reproduces the seasonal cosmic ray variation observed by the GMDN detectors and allows the highest correlation with long-term variation of the cosmic ray intensity seen by neutron monitors.
AMiBA: CLUSTER SUNYAEV–ZEL’DOVICH EFFECT OBSERVATIONS WITH THE EXPANDED 13-ELEMENT ARRAY
Authors: Lin Kai-Yang , Nishioka Hiroaki , Wang Fu-Cheng , Huang Chih-Wei Locutus , Liao Yu-Wei , Wu Jiun-Huei Proty , Koch Patrick M. , Umetsu Keiichi , Chen Ming-Tang , Chan Shun-Hsiang , Chang Shu-Hao , Chang Wen-Hsuan Lucky , Cheng Tai-An , Duy Hoang Ngoc , Fu Szu-Yuan , Han Chih-Chiang , Ho Solomon , Ho Ming-Feng , Ho Paul T. P. , Huang Yau-De , Jiang Homin , Kubo Derek Y. , Li Chao-Te , Lin Yu-Chiung , Liu Guo-Chin , Martin-Cocher Pierre , Molnar Sandor M. , Nunez Emmanuel , Oshiro Peter , Pai Shang-Ping , Raffin Philippe , Ridenour Anthony , Shih Chia-You , Stoebner Sara , Teo Giap-Siong , Yeh Jia-Long Johnny , Williams Joshua , Birkinshaw Mark 
Published: October 2016

ABSTRACT
The Yuan-Tseh Lee Array for Microwave Background Anisotropy (AMiBA) is a co-planar interferometer array operating at a wavelength of 3 mm to measure the Sunyaev–Zel’dovich effect (SZE) of galaxy clusters at arcminute scales. The first phase of operation—with a compact 7-element array with 0.6 m antennas (AMiBA-7)—observed six clusters at angular scales from

to

. Here, we describe the expansion of AMiBA to a 13-element array with 1.2 m antennas (AMiBA-13), its subsequent commissioning, and cluster SZE observing program. The most noticeable changes compared to AMiBA-7 are (1) array re-configuration with baselines ranging from 1.4 m to 4.8 m, allowing us to sample structures between

and

, (2) 13 new lightweight carbon-fiber-reinforced plastic (CFRP) 1.2 m reflectors, and (3) additional correlators and six new receivers. Since the reflectors are co-mounted on and distributed over the entire six-meter CFRP platform, a refined hexapod pointing error model and phase error correction scheme have been developed for AMiBA-13. These effects—entirely negligible for the earlier central close-packed AMiBA-7 configuration—can lead to additional geometrical delays during observations. Our correction scheme recovers at least 80 ± 5% of the point-source fluxes. We, therefore, apply an upward correcting factor of 1.25 to our visibilities to correct for phase decoherence, and a ±5% systematic uncertainty is added in quadrature with our statistical errors. We demonstrate the absence of further systematics with a noise level consistent with zero in stacked uv-visibilities. From the AMiBA-13 SZE observing program, we present here maps of a subset of 12 clusters with signal-to-noise ratios above five. We demonstrate combining AMiBA-7 with AMiBA-13 observations on Abell 1689, by jointly fitting their data to a generalized Navarro–Frenk–White model. Our cylindrically integrated Compton-y values for five radii are consistent with results from the Berkeley-Illinois-Maryland Array, the Owens Valley Radio Observatory, the Sunyaev–Zel’dovich Array, and the Planck Observatory. We also report the first targeted SZE detection toward the optically selected cluster RCS J1447+0828, and we demonstrate the ability of AMiBA SZE data to serve as a proxy for the total cluster mass. Finally, we show that our AMiBA-SZE derived cluster masses are consistent with recent lensing mass measurements in the literature.
Paysage et bois sacré : ἅλσος dans la Périégèse de la Grèce de Pausanias
Authors: Jacob Christian 
Published: October 2016

L’ἅλσος est un élément récurrent du paysage religieux dans la Périégèse de la Grèce de Pausanias. Les descriptions qui en sont données ne permettent guère de conclure à une identité forte du “bois sacré” par rapport à d’autres types de sanctuaires : ni les divinités concernées, ni l’aménagement, ni les rituels, ni les espèces végétales, ni la localisation ne constituent des critères spécifiques. Le bois n’est pas sacré en lui-même. Il doit son statut aux divinités qu’il abrite. Les auteurs grecs évoquent souvent la beauté et l’agrément de ce type de paysage boisé.
Les femmes qui restent, ressorts de l’économie familiale d’archipel au Mexique
Authors: Michel Aurélia 
Published: October 2016

Dans les régions rurales du Sud-est mexicain, les expériences migratoires à échelle nationale et internationale s’accumulent durant les années 1940. Par ailleurs, la mise en place d’une réforme agraire depuis cette époque a conduit à renforcer l’ancrage des familles sur place, si bien qu’au fil des générations, les familles se sont constituées en archipel dans l’espace régional. Or, les liens qui unissent les membres de cet archipel sont volontiers investis et entretenus par les femmes, pour plusieurs raisons que nous analysons dans cet article : la valorisation économique de la contribution des femmes à la famille, l’accès des femmes à l’emploi salarié, ainsi que la distance, conduisent à faire reconnaître le rôle des femmes dans l’économie d’archipel et ainsi à favoriser leur accès au foncier. Des trajectoires individuelles et familiales observées à Zanatepec, dans l’État de Oaxaca, servent de support à cette analyse.
« Une femme en Côte d’Ivoire, une femme au Burkina Faso »
Authors: Ruf François 
Published: October 2016

La Côte d’Ivoire, dans sa diversité de régions de forêt et de savane, et le Burkina Faso sont historiquement liés dans la construction de l’économie de plantation villageoise ivoirienne, fondée sur le binôme « café/cacao ». La terre de la première a toujours eu besoin du travail des habitants du second. Cette rencontre entre terre et travail a pu se réaliser avec peu de capital et sans capitalistes dans la sphère de production. Les familles d’origine ivoirienne et burkinabé, en majorité des migrants, constituent toujours l’ossature du secteur cacao. Au sein de la famille, les stratégies évoluent en réseaux, sur plusieurs espaces économiques. La contribution des femmes aux travaux dans les cacaoyères et champs de vivriers attenants est connue. Mais quel pourrait être l’importance et le rôle des femmes de planteurs qui resteraient ou retourneraient « au pays », au « village d’origine » ? Cette question, apparemment peu étudiée, est traitée à travers des enquêtes dans les villages de migration cacaoyère en Côte d’Ivoire, donc auprès des planteurs et maris parlant de leur femme au village d’origine, complétées d’informations collectées auprès des co-épouses restées avec leur mari. Un échantillon de 209 planteurs migrants dont 117 se déclarant d’origine burkinabé, se répartit sur une douzaine de villages de part et d’autre du fleuve Sassandra. Le premier résultat est la fréquence du phénomène, pouvant atteindre 20% des ménages de migrants. En amont de ces résidences de femmes au village d’origine, les stratégies combinent des objectifs de solidarité et sécurité familiale, de scolarité, de maintien des réseaux. Mais ces femmes « au village » accompagnent aussi des investissements conséquents et diversifiés, aux déterminants structurels autour du cacao et du politique : chute du prix du cacao à partir de 1988, baisse des rendements des cacaoyères vieillissantes, crise politico-militaire, nouveaux enjeux fonciers. Ces profonds changements écologiques, économiques, politiques des années 2000 génèrent ou accélèrent le processus de « retour » des femmes au village d’origine, … et du boom spectaculaire de l’anacarde en Côte d’Ivoire. Les femmes y jouent un rôle important, par exemple dans les groupes se réclamant d’une origine Abron/Koulango, aux confins de la frontière Ghanéenne. Leur « retour » au village d’origine peut s’interpréter comme une migration post-cacaoyère, porteuse de diversification et d’investissement. Ces « femmes qui restent ou qui repartent » reflètent l’histoire, les jeux et enjeux de l’économie de plantation ivoirienne ou plutôt « ivoiro/ouest-africaine », mais en écrivent aussi une nouvelle page.
Les migrantes de retour dans la Corne de l’Afrique
Authors: Chiré Amina Saïd , Tamru Bezunesh 
Published: October 2016

La demande croissante en personnel domestique dans la République de Djibouti et dans les pays du Moyen-Orient encourage la migration de femmes originaires d’Éthiopie et de la Somalie. Pendant leurs périodes d’expatriation, les migrantes mettent en œuvre plusieurs stratégies pour réussir un retour synonyme d’ascension sociale. Notre étude interroge ces retours en termes de modes d’installation et de réinsertion socio-spatiales en Éthiopie. En effet, l’étude montre qu’un « retour » pour être un « rester » abouti et définitif doit passer par d’innombrables allers/retours internationaux suivis par des mobilités localement renouvelées. Les retours et les « resters » privilégient le milieu urbain, le cas éthiopien révèle ainsi une nette prédilection pour les installations dans des villes secondaires et les périphéries de la capitale. Au-delà, nos observations dévoilent la façon dont les migrantes de retour réinterrogent les mutations urbaines par leurs spécificités tout autant sociales que « genrées ».
Incidence and Characteristics of Meniscal Injuries in Cadets at a Military School, 2013–2015
Authors: Ma Ji Zheng , Cui Shu Fang , Hu Fei , Lu Qiu Ju , Li Wei 
Published: October 2016

Context: Meniscal injury is common among military service members.Objective: To examine the incidence and characteristics of meniscal injuries in cadets at a single military institution between 2013 and 2015.Design: Cohort study.Setting: Meniscal-injury data were collected at the Center of Rehabilitation Training, the People's Liberation Army University of Science and Technology.Patients or Other Participants: A total of 2479 cadets participating in physical activities between 2013 and 2015.Main Outcome Measure(s): Injury rates, injury proportions by body mass index, risk ratios (RRs), and injury proportion ratios were reported with 95% confidence intervals (CIs).Results: The overall incidence rate was 10.08 (95% CI = 6.84, 14.84) per 1000 person-years. A multiple-comparisons test revealed differences in the relative injury rate in overweight or obese cadets versus normal-weight cadets and underweight cadets (χ2 = 8.98, P = .01). No differences were found between injured normal-weight cadets and underweight cadets (P = .66, RR = 1.39, 95% CI = 0.32, 6.06) or between injured overweight or obese cadets and injured underweight cadets (P = .24, RR = 0.42, 95% CI = 0.09, 1.91). The absolute injury rate was higher for overweight and obese cadets compared with normal-weight cadets (P &lt; .01, RR = 0.30, 95% CI = 0.13, 0.69). The overall proportional distribution for patterns of injury was 2:1 (medial to lateral) for meniscal injuries. Grade 2 injuries were the most common.Conclusions: The high frequency and level of severity of meniscal injuries may negatively affect the readiness and health of cadets. High body mass index was a risk factor for meniscal injury.
Optical properties and aging of light-absorbing secondary organic aerosol
Authors: Liu Jiumeng , Lin Peng , Laskin Alexander , Laskin Julia , Kathmann Shawn M. , Wise Matthew , Caylor Ryan , Imholt Felisha , Selimovic Vanessa , Shilling John E. 
Published: October 2016

Abstract. The light-absorbing organic aerosol (OA) commonly referred to as “brown carbon” (BrC) has attracted considerable attention in recent years because of its potential to affect atmospheric radiation balance, especially in the ultraviolet region and thus impact photochemical processes. A growing amount of data has indicated that BrC is prevalent in the atmosphere, which has motivated numerous laboratory and field studies; however, our understanding of the relationship between the chemical composition and optical properties of BrC remains limited. We conducted chamber experiments to investigate the effect of various volatile organic carbon (VOC) precursors, NOx concentrations, photolysis time, and relative humidity (RH) on the light absorption of selected secondary organic aerosols (SOA). Light absorption of chamber-generated SOA samples, especially aromatic SOA, was found to increase with NOx concentration, at moderate RH, and for the shortest photolysis aging times. The highest mass absorption coefficient (MAC) value is observed from toluene SOA products formed under high-NOx conditions at moderate RH, in which nitro-aromatics were previously identified as the major light-absorbing compounds. BrC light absorption is observed to decrease with photolysis time, correlated with a decline of the organic nitrate fraction of SOA. SOA formed from mixtures of aromatics and isoprene absorb less visible (Vis) and ultraviolet (UV) light than SOA formed from aromatic precursors alone on a mass basis. However, the mixed SOA absorption was underestimated when optical properties were predicted using a two-product SOA formation model, as done in many current climate models. Further investigation, including analysis on detailed mechanisms, are required to explain the discrepancy.
High-resolution daily gridded data sets of air temperature and wind speed for Europe
Authors: Brinckmann Sven , Krähenmann Stefan , Bissolli Peter 
Published: October 2016

Abstract. New high-resolution data sets for near-surface daily air temperature (minimum, maximum and mean) and daily mean wind speed for Europe (the CORDEX domain) are provided for the period 2001–2010 for the purpose of regional model validation in the framework of DecReg, a sub-project of the German MiKlip project, which aims to develop decadal climate predictions. The main input data sources are SYNOP observations, partly supplemented by station data from the ECA&amp;D data set (http://www.ecad.eu). These data are quality tested to eliminate erroneous data. By spatial interpolation of these station observations, grid data in a resolution of 0.044° (≈ 5km) on a rotated grid with virtual North Pole at 39.25° N, 162° W are derived. For temperature interpolation a modified version of a regression kriging method developed by Krähenmann et al.(2011) is used. At first, predictor fields of altitude, continentality and zonal mean temperature are used for a regression applied to monthly station data. The residuals of the monthly regression and the deviations of the daily data from the monthly averages are interpolated using simple kriging in a second and third step. For wind speed a new method based on the concept used for temperature was developed, involving predictor fields of exposure, roughness length, coastal distance and ERA-Interim reanalysis wind speed at 850 hPa. Interpolation uncertainty is estimated by means of the kriging variance and regression uncertainties. Furthermore, to assess the quality of the final daily grid data, cross validation is performed. Variance explained by the regression ranges from 70 to 90 % for monthly temperature and from 50 to 60 % for monthly wind speed. The resulting RMSE for the final daily grid data amounts to 1–2 K and 1–1.5 ms−1 (depending on season and parameter) for daily temperature parameters and daily mean wind speed, respectively. The data sets presented in this article are published at doi:10.5676/DWD_CDC/DECREG0110v2.
Short-Term Results with a Constrained Acetabular Liner in Patients at High Risk of Dislocation after Primary Total Hip Arthroplasty
Authors: Gill Kathryn , Whitehouse Sarah L. , Hubble Matthew J.W. , Wilson Matthew J. 
Published: October 2016

Background Dislocation following primary total hip arthroplasty (THA) is a complication with an incidence of 2%-5%. This study examines the clinical and radiological outcome of a constrained acetabular implant used in primary THA in high-risk patients to prevent dislocation. Methods 54 patients with 55 constrained implants for primary THA were reviewed clinically and radiologically. Oxford, Harris Hip and Charlson scores were recorded. Results 54 patients, with an average age of 83.2 years, were followed up at a mean of 44.9 (20-74) months. 38 had an hydroxyapatite- (HA) coated acetabular shell with a constrained insert and 17 had a cemented constrained implant. The median Charlson score at surgery was 5 (4-10). There were significant improvements in Oxford, Harris hip pain and function scores and Charnley pain after surgery. 2 patients had radiolucent lines on the most recent radiograph. Neither was symptomatic and the acetabular components had not migrated. 3 patients developed postoperative infection, 1 deep requiring a 2-stage revision. Of the 29 patients who died, 1 required revision 2 months following surgery for dislocation of the constrained liner. This patient died 26 months later from unrelated causes having had no further complications from her surgery. There have been no further revisions or reoperations for dislocation in any of the other cases. Conclusions The use of a constrained acetabular liner at primary THA in high risk patients for dislocation can successfully prevent this complication without increasing component loosening. In this series of 55 constrained implants we have a postoperative dislocation rate of 1.8%.
The DRIL procedure for arteriovenous access ischemic steal: a controversial approach
Authors: Davidson Ingemar , Beathard Gerald , Gallieni Maurizio , Ross John 
Published: October 2016

The DRIL procedure first described in 1988 has long been considered the preferred treatment for arteriovenous access ischemic steal (AVAIS). At the time it was a brilliant concept and breakthrough. In the last decade, the DRIL procedure has become less used. With the increasing age of the dialysis population, patients developing AVAIS are more likely to be elderly with advanced peripheral arterial disease, making the distal revascularization anastomosis difficult and risky if not impossible to perform. In addition, the distal ligation of the main artery to the arm is something most surgeons are reluctant to do. The occlusion of the arterial bypass over time is not uncommon with recurrence of hand ischemia. The multistep DRIL procedure requires general anesthesia and the need to harvest the saphenous vein for the bypass, add to the surgical risk in patients with multiple co-morbidities. For these reasons, some surgeons prefer to do only the DR (distal re-vascularization) portion of the procedure omitting the IL (interval ligation). Increasing the bypass distance from the original anastomosis, makes this modification similar to the less invasive proximal arterial inflow (PAI) procedure. Conclusions Because of changes in the patient population clinical presentation, most notably forearm atherosclerosis and with new technologies, this editorial addresses the current validity of the DRIL procedure as a safe option in treating AVAIS.