bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comparison of West Balkan adult trout habitat predictions using a Pseudo-2D and a 2D hydrodynamic model
Authors: Papadaki Christina , Bellos Vasilis , Ntoanidis Lazaros , Dimitriou Elias 
Published: December 2016

Abstract
Hydraulic-habitat models combine the dynamic behavior of river discharge with geomorphological and ecological responses. In this study, they are used for estimating environmental flow requirements. We applied a Pseudo-two-dimensional (2D) model based on the one-dimensional (1D) HEC-RAS model and an in-house 2D (FLOW-R2D) hydrodynamic model to a section of river for several flows in respect of summer conditions of the study reach, and compared the results derived from the models in terms of water depths and velocities as well as habitat predictions in terms of weighted usable area (WUA). In general, 2D models are more promising in habitat studies since they quantify spatial variations and combinations of flow patterns important to stream flora and fauna in a higher detail than the 1D models. Relationships between WUA and discharge for the two models were examined, to compare the similarity as well as the magnitude of predictions over the modelled discharge range. The models predicted differences in the location of maxima and changes in variation of velocity and water depth. Finally, differences in spatial distribution (in terms of suitability indices and WUA) between the Pseudo-2D and the fully 2D modelling results can be considerable on a cell-by-cell basis.
Region-wise Effects of Climate Sensitive Variables on Some Specific Disease Burdens in Nepal
Authors: Shrestha Srijan Lal , Shrestha Iswori Lal , Shrestha Niraj 
Published: December 2016

Background:In the context of climate change scenario in Nepal with rise in average surface air temperature, an ecological time series study has been conducted to examine and assess the effect of climate related variables on some specific disease burdens covering areas of all the eco-belts of Nepal.Objective:The study is conducted to examine several health effects associated with climate sensitive variables separately between the three eco-belts of Nepal and estimate environmental burden of diseases that can be attributed to temperature as the main climate variable.Method:The study is based upon daily meteorological data including temperature, rainfall, relative humidity and wind speed collected from the Department of Hydrology and Meteorology, Kathmandu and hospitalizations including water-borne (enteric fever, diahrreoal diseases and hepatitis), vector-borne (malaria, dengue, encephalitis, leishmaniasis and filarisis), urinary system (chronic kidney diseases, urinary tract infections and renal failure) and heart diseases (ischemic heart disease including angina pectoris, cardiovascular arrest, cardiac failures and other cardiovascular diseases) and mortality (all cause and diseases specific) are collected from the leading hospitals of the study area for 5 years in between 14 April 2009 and 13 April 2014.Results:Results of generalized linear modelling accounting distributed lag effects showed varied health effects between eco-belts and hospitalization/death types such as 2.1% to 7.3% rise in the considered hospitalizations per 1°C rise in temperature, 0.9% to 8.2% rise in all cause deaths per 1°C change in temperature below or above 20°C, -8.7% to 2.4% change in hospitalizations/deaths per 1 mm rise in rainfall, -1.6% to 7.3% change in hospitalizations/deaths per 1% rise in relative humidity and -23.6% to 35% change in hospitalization/deaths per 1 m/s rise in wind speed which can be attributed to many significant differences that prevail between the eco-belts of Nepal.Conclusion:Even though health effects are due to many factors, climate conditions are significant factors in affecting health of people and climate change is bound to affect the health burden of Nepalese people for which Nepal needs suitable preparedness and adaptation policies to counter and minimize the hazards of climate change in years to come.
Model asesmen autentik untuk menilai hasil belajar siswa sekolah menengah pertama (SMP): implementasi asesmen autentik di SMP
Authors: Kartowagiran Badrun , Jaedun Amat 
Published: December 2016

Tujuan penelitian ini adalah mendeskripsikan kondisi guru yang melaksanakan penilaian dan mendeskripsikan kualitas pelaksanaan asesmen autentik di SMP yang berada di Daerah Istimewa Yogyakarta (DIY). Penelitian tahun pertama ini termasuk penelitian survei dengan rancangan crossectional survey. Penelitian dilaksanakan di 15 SMP yang ada di DIY. Semua instrumen yang digunakan untuk mengumpulkan data, yakni: daftar dokumen, panduan wawancara, lembar observasi, lembar telaah, dan kuesioner termasuk katagori valid dan reliabel. Hasil penelitian menunjukkan bahwa kondisi guru yang melaksanakan asesmen autentik masih memerlukan perbaikan dan kualitas pelaksanaan penilaian autentik di SMP yang berada di DIY belum baik. Hal ini ditengarai dengan belum baiknya rancangan penilaian yang tertulis pada Rencana Pelaksanaan Pembelajaran (RPP), baru sebagian kecil guru yang melakukan penilaian kompetensi sikap dalam pembelajaran, baru sebagian kecil guru yang disiplin melakukan penilaian, dan masih sedikit guru yang mempersiapkan perangkat penilaian. Hal ini dikarenakan sebagian besar guru merasa bahwa waktu pelatihan kurang sehingga mereka kurang paham terhadap materi yang dilatihkan, utamanya tentang materi penilaian.Kata kunci: Implementasi, penilaian autentik, SMP AUTHENTIC ASSESSMENT MODEL TO ASSESS THE JUNIOR HIGH SCHOOL (JHS) STUDENTS’ LEARNING OUTCOMES: THE IMPLEMENTATION OF AUTHENTIC ASSESSMENT IN JHSAbstractThe aim of this research is to describe the teachers’condition and the quality of implementation of authentic assessment in JHSes located in Yogyakarta Special Region or Daerah Istimewa Yogyakarta (DIY). This first-year research was considered as a survey research with crossectional survey design. The research was conducted in 15 JHSes in DIY. Those instruments that have been used in this research are: the list of documents, interview guide, observation sheet, inspection sheet, and questionaire are valid and reliabel. The result of this research shows that the implementation of authentic assessment in JHSes located in DIY is not good enough. It is indicated by the less good assessment design written in the lesson plan or Rencana Pelaksanaan Pembelajaran (RPP), which reveals that there is only few of teachers who conduct attitude competence assessment in the learning process, who are disciplined in conducting assessment, and who prepare assessment sets. It is because most teachers feel that the time given for training is insufficient so that the materials trained are less understandable, especially the materials about assessment.Keywords: implementation, authentic assessment, JHS
Analisis model simultan model logistik satu parameter dengan waktu respon berdasarkan data simulasi
Authors: Hidayah Noer , Kumaidi Kumaidi 
Published: December 2016

Penelitian ini bertujuan untuk menganalisis model simultan model logistik satu parameter (ML1P) dengan waktu respon. Analisis terhadap model menggunakan data simulasi, yang skenario pembangkitan data simulasi dilakukan berdasarkan banyaknya peserta tes (500, 1000) dan banyaknya soal tes (11, 20, 40). Setiap skenario direplikasi sebanyak 30 kali. Metode estimasi parameter model menggunakan metode Bayesian, Markov Chain Monte Carlo. Analisis terhadap model dilakukan dengan menghitung selisih antara besaran parameter bangkitan (true value) dengan besaran parameter estimasi. Metode analisis menggunakan Root Mean Square Error (RMSE), Standart Error (SE) dan bias. Hasil penelitian menunjukkan bahwa performance hasil estimasi parameter model yang terdapat dalam soal tes (tingkat kesulitan soal, kelambatan soal, dan besarnya usaha untuk soal ke-j), tidak dipengaruhi oleh banyaknya soal tes. Performancehasil estimasi parameter model dalam peserta tes (kecepatan dan kemampuan peserta tes) dipengaruhi oleh banyaknya soal tes, yang semakin banyak soal tes maka hasil estimasi parameternya akan semakin mendekati nilai parameter yang sebenarnya.Kata kunci: model simultan ML1P dengan waktu respon, data simulasi, metode analisis ANALYSIS OF SIMULTANEOUS MODEL OF ONE PARAMETER LOGISTIC MODEL AND RESPONSE TIME BASED ON SIMULATION DATAAbstractThe aim of this research is to analyse simultaneous model One Parameter Logistic Model (1-PLM) and respon time. The analysis of model used the simulation data, where the data generation scenario was done based on the number of test takers (500, 1000) and the number of test items (11, 20, 40). Parameter estimation method used the Bayesian method, Markov Chain Monte Carlo. The analysis of model was done with the accounting of the distance of true value and estimated parameter. The Analysis methods use Root Mean Square Error (RMSE), Standart Error (SE) and bias.The result of research reveals the performance of parameter estimation result for the test item (the test item difficulty, test item slowness, and the effort to complete the item test) is not influenced by the number of the test items. However, the performance of parameter estimation result for the test takers (the speed and ability of the test takers) is influenced by the number of the test items. The more test items there are, the closer is the parameter estimation result to the true parameter.Keywords: simultaneous model one parameter logistic model (1-PLM) and respon time, simulation data, analysis methods
NEW EXTREME TRANS-NEPTUNIAN OBJECTS: TOWARD A SUPER-EARTH IN THE OUTER SOLAR SYSTEM
Authors: Sheppard Scott S. , Trujillo Chadwick 
Published: December 2016

ABSTRACT
We are performing a wide and deep survey for extreme distant solar system objects. Our goal is to understand the high-perihelion objects Sedna and 2012 VP113 and determine if an unknown massive planet exists in the outer solar system. The discovery of new extreme objects from our survey of some 1080 square degrees of sky to over 24th magnitude in the r-band are reported. Two of the new objects, 2014 SR349 and 2013 FT28, are extreme detached trans-Neptunian objects, which have semimajor axes greater than 150 au and perihelia well beyond Neptune (q > 40 au). Both new objects have orbits with arguments of perihelia within the range of the clustering of this angle seen in the other known extreme objects. One of these objects, 2014 SR349, has a longitude of perihelion similar to the other extreme objects, but 2013 FT28 is about 180° away or anti-aligned in its longitude of perihelion. We also discovered the first outer Oort Cloud object with a perihelion beyond Neptune, 2014 FE72. We discuss these and other interesting objects discovered in our ongoing survey. All the high semimajor axis (a > 150 au) and high-perihelion (q > 35 au) bodies follow the previously identified argument of perihelion clustering as first reported and explained as being from an unknown massive planet in 2014 by Trujillo & Sheppard, which some have called Planet X or Planet Nine. With the discovery of 2013 FT28 on the opposite side of the sky, we now report that the argument of perihelion is significantly correlated with the longitude of perihelion and orbit pole angles for extreme objects and find there are two distinct extreme clusterings anti-aligned with each other. This previously unnoticed correlation is further evidence of an unknown massive planet on a distant eccentric inclined orbit, as extreme eccentric objects with perihelia on opposite sides of the sky (180° longitude of perihelion differences) would approach the inclined planet at opposite points in their orbits, thus making the extreme objects prefer to stay away from opposite ecliptic latitudes to avoid the planet (i.e., opposite argument of perihelia or orbit pole angles).
SPIRAL STRUCTURE AND DIFFERENTIAL DUST SIZE DISTRIBUTION IN THE LkHα 330 DISK
Authors: Akiyama Eiji , Hashimoto Jun , Liu Hauyu baobabu , Li Jennifer i-hsiu , Bonnefoy Michael , Dong Ruobing , Hasegawa Yasuhiro , Henning Thomas , Sitko Michael L. , Janson Markus , Feldt Markus , Wisniewski John , Kudo Tomoyuki , Kusakabe Nobuhiko , Tsukagoshi Takashi , Momose Munetake , Muto Takayuki , Taki Tetsuo , Kuzuhara Masayuki , Satoshi Mayama , Takami Michihiro , Ohashi Nagayoshi , Grady Carol A. , Kwon Jungmi , Thalmann Christian , Abe Lyu , Brandner Wolfgang , Brandt Timothy D. , Carson Joseph C. , Egner Sebastian , Goto Miwa , Guyon Olivier , Hayano Yutaka , Hayashi Masahiko , Hayashi Saeko S. , Hodapp Klaus W. , Ishii Miki , Iye Masanori , Knapp Gillian R. , Kandori Ryo , Matsuo Taro , Mcelwain Michael W. , Miyama Shoken , Morino Jun-Ichi , Moro-Martin Amaya , Nishimura Tetsuo , Pyo Tae-Soo , Serabyn Eugene , Suenaga Takuya , Suto Hiroshi , Suzuki Ryuji , Takahashi Yasuhiro H. , Takato Naruhisa , Terada Hiroshi , Tomono Daigo , Turner Edwin L. , Watanabe Makoto , Yamada Toru , Takami Hideki , Usuda Tomonori , Tamura Motohide 
Published: December 2016

ABSTRACT
Dust trapping accelerates the coagulation of dust particles, and, thus, it represents an initial step toward the formation of planetesimals. We report H-band (1.6 μm) linear polarimetric observations and 0.87 mm interferometric continuum observations toward a transitional disk around LkHα 330. As a result, a pair of spiral arms were detected in the H-band emission, and an asymmetric (potentially arm-like) structure was detected in the 0.87 mm continuum emission. We discuss the origin of the spiral arm and the asymmetric structure and suggest that a massive unseen planet is the most plausible explanation. The possibility of dust trapping and grain growth causing the asymmetric structure was also investigated through the opacity index (β) by plotting the observed spectral energy distribution slope between 0.87 mm from our Submillimeter Array observation and 1.3 mm from literature. The results imply that grains are indistinguishable from interstellar medium-like dust in the east side (

) but are much smaller in the west side

, indicating differential dust size distribution between the two sides of the disk. Combining the results of near-infrared and submillimeter observations, we conjecture that the spiral arms exist at the upper surface and an asymmetric structure resides in the disk interior. Future observations at centimeter wavelengths and differential polarization imaging in other bands (Y–K) with extreme AO imagers are required to understand how large dust grains form and to further explore the dust distribution in the disk.
IS NSVS 5066754 A NEAR-CONTACT OR A MARGINAL CONTACT BINARY?
Authors: Samec Ronald G. , Nyaude Ropafadzo , Caton Daniel B. , Faulkner Danny R. 
Published: December 2016

ABSTRACT

BVR

c

I

c
light curves of NSVS 5066754 were taken on 2014 May at Dark Sky Observatory in North Carolina. This variable is a solar-type eclipsing binary (T1 ∼ 5750 K) with a period of only 0.3751689(1) days. It appeared to be one of the shortest periods in Shaw’s list of near-contact binaries. The Binary Maker fits and our Wilson–Devinney solutions show that the binary could have both semidetached and marginal contact binary configurations. Five new times of minimum light were calculated, along with two minima determined from archived All Sky Automated Survey observations. From these minima and the discovery epoch, a quadratic ephemeris was determined. Thus, a magnetic braking scenario is possible. Both semidetached and contact models were explored. A marginal contact solution had the best sum of square residuals. It gave a mass ratio of ∼0.5, and a component temperature difference of ∼360 K, albeit somewhat large for a contact binary. Two substantial cool spots were determined in this solution with 37° and 28° radii and t-factors or 0.94 and 0.78 respectively. The fill-out is very shallow, ∼106%. It may have recently achieved contact.
CLUSTER-LENSING: A PYTHON PACKAGE FOR GALAXY CLUSTERS AND MISCENTERING
Authors: Ford Jes , VanderPlas Jake 
Published: December 2016

ABSTRACT
We describe a new open source package for calculating properties of galaxy clusters, including Navarro, Frenk, and White halo profiles with and without the effects of cluster miscentering. This pure-Python package, cluster-lensing, provides well-documented and easy-to-use classes and functions for calculating cluster scaling relations, including mass-richness and mass-concentration relations from the literature, as well as the surface mass density

and differential surface mass density

profiles, probed by weak lensing magnification and shear. Galaxy cluster miscentering is especially a concern for stacked weak lensing shear studies of galaxy clusters, where offsets between the assumed and the true underlying matter distribution can lead to a significant bias in the mass estimates if not accounted for. This software has been developed and released in a public GitHub repository, and is licensed under the permissive MIT license. The cluster-lensing package is archived on Zenodo. Full documentation, source code, and installation instructions are available at http://jesford.github.io/cluster-lensing/.
METERWAVELENGTH SINGLE-PULSE POLARIMETRIC EMISSION SURVEY. II. THE PHENOMENON OF DRIFTING SUBPULSES
Authors: Basu Rahul , Mitra Dipanjan , Melikidze George I. , Maciesiak Krzysztof , Skrzypczak Anna , Szary Andrzej 
Published: December 2016

ABSTRACT
A large sample of pulsars was observed as part of the Meterwavelength Single-pulse Polarimetric Emission Survey. We carried out a detailed fluctuation spectral analysis that revealed periodic features in 46% of pulsars, including 22 pulsars where drifting characteristics were reported for the first time. The pulsar population can be categorized into three distinct groups: pulsars that show systematic drift motion within the pulse window, pulsars showing no systematic drift but periodic amplitude fluctuation, and pulsars with no periodic variations. We discovered the dependence of the drifting phenomenon on the spin-down energy loss (

E

˙

), with the three categories occupying distinctly different regions along the

E

˙

axis. The estimation of the drift periodicity (P
3) from the peak frequency in the fluctuation spectra is ambiguous due to the aliasing effect. However, using basic physical arguments we were able to determine P
3 in pulsars showing systematic drift motion. The estimated P
3 values in these pulsars were anti-correlated with

E

˙

, which favored the partially screened gap model of the inner acceleration region in pulsars.
ON THE RADIO DICHOTOMY OF ACTIVE GALACTIC NUCLEI
Authors: Cao Xinwu 
Published: December 2016

ABSTRACT
It is still a mystery why only a small fraction of active galactic nuclei (AGNs) contain relativistic jets. A strong magnetic field is a necessary ingredient for jet formation, however, the advection of the external field in a geometrically thin disk is inefficient. Gas with a small angular velocity may fall from the Bondi radius

nearly freely to the circularization radius

, and a thin accretion disk is formed within

. We suggest that the external magnetic field is substantially enhanced in this region, and the magnetic field at

can be sufficiently strong to drive outflows from the disk if the angular velocity of the gas is low at

. The magnetic field is efficiently dragged in the disk, because most angular momentum of the disk is removed by the outflows that lead to a significantly high radial velocity. The strong magnetic field formed in this way may accelerate jets in the region near the black hole, either by the Blandford–Payne or/and Blandford–Znajek mechanisms. We suggest that the radio dichotomy of AGNs predominantly originates from the angular velocity of the circumnuclear gas. An AGN will appear as a radio-loud (RL) one if the angular velocity of the circumnuclear gas is lower than a critical value at the Bondi radius, otherwise, it will appear as a radio-quiet (RQ) AGN. This is supported by the observations that RL nuclei are invariably hosted by core galaxies. Our model suggests that the mass growth of the black holes in RL quasars is much faster than that in RQ quasars with the same luminosity, which is consistent with the fact that the massive black holes in RL quasars are systematically a few times heavier than those in their RQ counterparts.
THE SHAPE OF THE INNER MILKY WAY HALO FROM OBSERVATIONS OF THE PAL 5 AND GD–1 STELLAR STREAMS
Authors: Bovy Jo , Bahmanyar Anita , Fritz Tobias K. , Kallivayalil Nitya 
Published: December 2016

ABSTRACT
We constrain the shape of the Milky Way’s halo by dynamical modeling of the observed phase-space tracks of the Pal 5 and GD–1 tidal streams. We find that the only information about the potential gleaned from the tracks of these streams are precise measurements of the shape of the gravitational potential—the ratio of vertical to radial acceleration—at the location of the streams, with weaker constraints on the radial and vertical accelerations separately. The latter will improve significantly with precise proper-motion measurements from Gaia. We measure that the overall potential flattening is 0.95 ± 0.04 at the location of GD–1 (

) and 0.94 ± 0.05 at the position of Pal 5 (

). Combined with constraints on the force field near the Galactic disk, we determine that the axis ratio of the dark-matter halo’s density distribution is 1.05 ± 0.14 within the inner 20 kpc, with a hint that the halo becomes more flattened near the edge of this volume. The halo mass within

is

. A dark-matter halo this close to spherical is in tension with the predictions from numerical simulations of the formation of dark-matter halos.
MUSE GAS FLOW AND WIND (MEGAFLOW). I. FIRST MUSE RESULTS ON BACKGROUND QUASARS*
Authors: Schroetter I. , Bouché N. , Wendt M. , Contini T. , Finley H. , Pelló R. , Bacon R. , Cantalupo S. , Marino R. A. , Richard J. , Lilly S. J. , Schaye J. , Soto K. , Steinmetz M. , Straka L. A. , Wisotzki L. 
Published: December 2016

ABSTRACT
The physical properties of galactic winds are one of the keys to understand galaxy formation and evolution. These properties can be constrained thanks to background quasar lines of sight (LOS) passing near star-forming galaxies (SFGs). We present the first results of the MusE GAs FLOw and Wind survey obtained from two quasar fields, which have eight Mg ii absorbers of which three have rest equivalent width greater than 0.8 Å. With the new Multi Unit Spectroscopic Explorer (MUSE) spectrograph on the Very Large Telescope (VLT), we detect six (75%) Mg ii host galaxy candidates within a radius of 30″ from the quasar LOS. Out of these six galaxy–quasar pairs, from geometrical argument, one is likely probing galactic outflows, where two are classified as “ambiguous,” two are likely probing extended gaseous disks and one pair seems to be a merger. We focus on the wind-pair and constrain the outflow using a high-resolution quasar spectra from the Ultraviolet and Visual Echelle Spectrograph. Assuming the metal absorption to be due to ga;s flowing out of the detected galaxy through a cone along the minor axis, we find outflow velocities in the order of ≈150

(i.e., smaller than the escape velocity) with a loading factor,

, of ≈0.7. We see evidence for an open conical flow, with a low-density inner core. In the future, MUSE will provide us with about 80 multiple galaxy−quasar pairs in two dozen fields.