bluuebunny/crossref_metadata_2025_split huggingface dataset:
Peningkatan Hasil Cluster Menggunakan Algoritma Dynamic K-means dan K-means Binary Search Centroid
Authors: Akbari Gumilar , Kerlooza Yusrila 
Published: December 2019

Pada studi kasus segmentasi pelanggan, data yang digunakan untuk segmentasi memiliki atribut data berdasarkan nilai Recency, Frequency, dan Monetery dan memiliki jumlah data 500, untuk membentuk segmentasi pelanggan dapat digunakan teknik clustering. Clustering adalah proses untuk mengelompokkan datum ke dalam sejumlah cluster (kelompok data). Salah satu teknik Clustering adalah teknik clustering partisi, algoritma clustering yang digunakan pada penelitian ini yaitu algoritma Dynamic K-means (DK) dan K-means Binary Search Centroid (KBSC). Pada algoritma Dynamic K-means memiliki kemampuan untuk mencari jumlah Cluster, namun memiliki kekurangan dalam penentuan titik centroid (pusat cluster), sedangkan algoritma KBSC memiliki kemampuan untuk menentukan titik centroid Cluster, namun memiliki kekurangan dalam mencari jumlah Cluster. Pada penelitian ini menggabungkan kedua algoritma antara algoritma DK dan KBSC dan akan diujikan pada data model buatan yang bertujuan untuk melihat karakteristik dari algoritma, dan diujikan pada data studi studi kasus yang bertujuan untuk mengetahui kemampuan algoritma dalam menyelasaikan kasus segmentasi pelanggan. Berdasarkan pengukuran Devies Bouldin Index (DBI) algoritma gabungan DK-KBSC menghasilkan nilai DBI lebih baik dibandingkan algoritma lainnya.saat diimplementasikan pada data kasus segmentasi pelanggan.
La parole donnée : individuation et mélancolie du poète Goffette
Authors: Kelly Michael gerard 
Published: December 2019

Michael G. Kelly
La parole donnée : individuation et mélancolie du poète Goffette Cet article aborde l’œuvre de Goffette comme une méditation en acte de l’individuation poétique, soit : ‘le processus ouvert par lequel la conjonction du nom propre et de l’attribut générique est établie et maintenue’. Chez Goffette ce processus se déroule sous le signe de la mélancolie, mais d’une mélancolie grégaire et féconde à la fois. A la parole donnée par la poésie préexistante répond la parole donnée du poète. L’individuation poétique figure la question d’une parole inépuisée, une fois ces promesses faites.
Références et citations littéraires comme instruments polémiques dans l’œuvre critique de Barbey d’Aurevilly
Authors: Mayaux Catherine 
Published: December 2019

Catherine Mayaux
«Références et citations littéraires comme instruments polémiques
dans l’œuvre critique de Barbey d’Aurevilly»
Barbey est l’expert par excellence de la pratique citationnelle dont il propose un véritable feu d’artifice dans une écriture que couturent allusions, emprunts et plagiats assumés par la posture du polémiste. Ce matériau citationnel semble occuper l’esprit autant que la parole du critique à la manière d’une littérature première à l’aune de laquelle se jaugent travaux, opinions, textes et auteurs qu’aborde le polémiste. Il constitue une grille de lecture des hommes et de leurs écrits ; mais celle-ci n’a rien de figé puisqu’elle s’offre aussi comme l’amorce d’une inventivité et d’une productivité de l’écriture auxquelles Barbey cède souvent moins en critique qu’en poète.
Le bestiaire aurevillien
Authors: Millet-Gérard Dominique 
Published: December 2019

Dominique Millet-Gérard
«Le bestiaire aurevillien»
Pour stigmatiser la bêtise, Barbey a volontiers recours au bestiaire, qui lui fournit images et bons mots. Notre approche, à partir d’un échantillon de sa prose critique tirée de la série Philosophes et écrivains religieux , sera essentiellement rhétorique : repérage des sources et travail de la citation, élaboration par amplification (métaphores filées, mises en scène, «compositions de lieu») et, au contraire, brièveté épigrammatique : pointes triomphales en clausule. Enfin nous articulerons ce bestiaire aurevillien à l’antique théorie des «trois styles», pour montrer que le modèle principal, le La Fontaine des Fables, est arraché à son idéal de style tempéré pour subir un écartèlement systématique entre style noble (les emblèmes de l’idéal politique et religieux) et style bas (ceux de la décadence moderne) avec parfois de surprenants retournements.
Klasik Türk Edebiyatında Kullanılan “Sîne-Sâf” Tabiri Üzerine
Authors: GÜZEL Bilal 
Published: December 2019

Sîne-sâf
tabiri, Farsça, göğüs, bağır, sadr; gönül, kalp, yürek anlamına gelen “sîne”
kelimesi ve Arapça temiz, duru, berrak, hâlis anlamlarına gelen “sâf”
kelimesinin bir araya gelmesiyle oluşmuştur. “Sîne-sâf” için Farsça ve Türkçe sözlüklerde genel
olarak üç anlam verilmiştir. Bun anlamlardan ilki “gönlü temiz”dir. Sîne-sâf, gönlü temiz anlamı
ile daha çok tasavvufi metinlerde kullanılmaktadır. Sîne-sâf için sözlüklerde
gönlü temize yakın olarak “özü sözü doğru”, “iyi niyetli” ve “samimi, içten” anlamları da verilmektedir.
Bu anlamlarının yanı sıra üçüncü bir anlam olarak sîne-sâf, “sarılıp kucaklaşmış” anlamına gelecek
şekilde de kullanılmaktadır. “Sîne-sâf” tabirinin en yaygın olarak kullanılan
anlamı “gönlü temiz, temiz kalpli, özü sözü doğru” anlamlarıdır.

Sîne-sâf,
klasik Türk edebiyatında on altıncı yüzyıldan itibaren kullanılmaya başlanmış
ve hem manzum hem de mensur eserlerde kullanılmıştır. Daha çok yalın olarak
kullanılan tabir kimi zaman da ol- yardımcı fiilini almıştır. Sîne-sâf’ın
Klasik Türk edebiyatındaki kullanımı yukarıda verilen sözlük anlamlarının hemen
hepsini karşılamaktadır. Ancak hem manzum hem de mensur eserlerdeki bazı
kullanımlarda verilen sözlük anlamlarının bağlama uygun olmadığı tespit
edilmiştir. Bu çalışmada “sîne-sâf”
tabirinin örnek metinler üzerinden Klasik Türk edebiyatında kullanımı üzerinde
durulacaktır. Bu tabirin hangi anlamlarda kullanıldığı tartışılıp, sözlüklerde
verilen anlamların dışında kullanılıp kullanılmadığı sorgulatılacaktır.
Çalışmanın sonunda kullanıldığı bağlamdan hareketle sîne-sâf için sözlüklerde
yer almayan yeni bir anlam önerisinde bulunulacaktır.
Characterisation of incinerator bottom ash from a Danish waste-to-energy plant: a step towards closing the material cycle
Authors: Clausen Rune J. , Kalvig Per , Nedenskov Jonas 
Published: December 2019

The UN Sustainable Development Goal 12, regarding responsible production and consumption of raw materials, guides ongoing international efforts to enhance sustainability in all parts of the mineral sector. Of particular interest, is improving the recyclability of secondary waste streams and thereby increasing the efficiency of recycling end-of-life products. Municipal solid waste – residual waste from household and industry – constitutes one of these secondary streams. It is typically incinerated in waste-to-energy plants producing two types of waste streams that carry a raw material resource potential: incinerator bottom ash (IBA) and incinerator fly ash (IFA). IBA is of particular interest in the recycling industry, where it is commonly recycled to produce three main fractions: (i) ferrous material, (ii) non-ferrous material, and (iii) residual slag. In most cases the two metal fractions are separated further downstream in the value chain, prior to smelting. The residual, non-magnetic fraction (typically 0–45 mm) is used mainly as construction aggregate. Improvements in the efficiency of existing separation technologies are still being made, but less effort is focussed on characterising the fundamental composition and mineral resource potential of IBA. For this reason, the Urban-X project was launched by the Geological Survey of Denmark and Greenland (GEUS) to characterise the composition and resource potential of various waste streams at Amager Bakke waste-to-energy plant in Copenhagen, Denmark. This paper discusses some of the main outcomes of the Urban-X project with respect to IBA, and a full analysis of all waste streams analysed at Amager Bakke is available in Clausen et al. 2019.
A review of the current doctrines of regional Economics
Authors: Vertakova Yu. V. 
Published: December 2019

Regional economics received an additional field of research by attempting to combine its provisions with the doctrines of economic growth. The causes and effects of spatial clustering for economic growth are examined in the works of Lichtenberg,Vernon, Hinitz,Marshall, etc. The hypothesis of this study is based on theory of the IDA and the theory of localization economics.Aim. The presented study aims to review the current doctrines of regional economics.Tasks. The author analyzes the classical and modern scientific doctrines in the field of regional economics.Methods. This study uses general scientific methods of cognition, axiomatic, hypothetical, abstraction, and general logical methods to systematize the results of studies of the current doctrines of regional economics.Results. The results of the study, which include the examination and generalization of the current doctrines of regional economics, become even more relevant and receive new incentives for development by combining with other economic theories in an attempt to cover the whole spectrum of problems of regional economic development, which is a direction for further research in this subject area. Regional economics gained momentum through interaction with international and interregional trade theories. The development of a new trade theory based on the Dixit–Stiglitz model inspired a new interest in trade at different development levels. These changes in the trade theory facilitate the creation of multiple spatial economic models in the form of a new economic geography.Conclusions. The approach to the current doctrines of regional economics is realized through the international business theory. The structural component of regional economics in this field of research should be determined through the formation of territorial clusters. The second group of works conducts analysis using more complex economic models based on statistical methods. The corresponding research methods make it possible to identify clusters by measuring local effects.
Calidad en el servicio del departamento de recepción de hoteles de Hermosillo, Sonora, México
Authors: Ruíz Iduma Sara , Ochoa Medina Ivone Edith , Bernal Ruiz Zaid 
Published: December 2019

La investigación estudia los perfiles ocupacionales del sector turismo en Hermosillo, Sonora, específicamente analiza las competencias del recepcionista de los principales diez hoteles de la ciudad, con el propósito de determinar la calidad del servicio basados en las actitudes conductuales y técnicas en su desempeño, como los estándares de calidad, la comunicación verbal y no verbal que el recepcionista proyecta, manejo de quejas, asignación de habitaciones y la salida del huésped. La metodología utilizada se basa en dos instrumentos, un cuestionario y experiencias laborales de uno de los autores. Los hallazgos encontrados han concluido un eficiente manejo de competencias respecto a la calidad en el servicio al cliente.
Protostellar Evolution in Serpens Main: Possible Origin of Disk-size Diversity
Authors: Aso Yusuke , Hirano Naomi , Aikawa Yuri , Machida Masahiro N. , Ohashi Nagayoshi , Saito Masao , Takakuwa Shigehisa , Yen Hsi-Wei , Williams Jonathan P. 
Published: December 2019

Abstract
We have observed the submillimeter continuum condensations SMM2, SMM4, SMM9, and SMM11 in the star-forming cluster Serpens Main using the Atacama Large Millimeter/submillimeter Array during Cycle 3 in the 1.3 mm continuum, 12CO J = 2 − 1, SO J

N
= 65 − 54, and C18O J = 2 − 1 lines at an angular resolution of ∼0.″55 (240 au). Sixteen sources have been detected in the 1.3 mm continuum, which can be classified into three groups. Group 1 consists of six sources showing extended continuum emission and bipolar/monopolar 12CO outflows. Although all the Group 1 members are classified as Class 0 protostars, our observations suggest evolutionary trends among them in terms of 12CO outflow dynamical time, SO emission distribution, C18O fractional abundance, and continuum morphology. Group 2 consists of four sources associated with a continuum filamentary structure and no 12CO outflows. Central densities estimated from the 1.3 mm continuum intensity suggest that they are prestellar sources in a marginally Jeans unstable state. Group 3 consists of six Spitzer sources showing point-like 1.3 mm continuum emission and clumpy 12CO outflows. These features of Group 3 suggest envelope dissipation, preventing disk growth from the present size, r ≲ 60 au. The Group 3 members are protostars that may be precursors to the T Tauri stars associated with small disks at radii, of tens of astronomical units, identified in recent surveys.
Proton–Proton Collisions in the Turbulent Solar Wind: Hybrid Boltzmann–Maxwell Simulations
Authors: Pezzi O. , Perrone D. , Servidio S. , Valentini F. , Sorriso-Valvo L. , Veltri P. 
Published: December 2019

Abstract
The mechanism of heating for hot, dilute, and turbulent plasmas represents a long-standing problem in space physics, whose implications concern both near-Earth environments and astrophysical systems. In order to explore the possible role of interparticle collisions, simulations of plasma turbulence—in both collisionless and weakly collisional regimes—have been compared by adopting Eulerian Hybrid Boltzmann–Maxwell simulations, being proton–proton collisions explicitly introduced through the nonlinear Dougherty operator. Although collisions do not significantly influence the statistical characteristics of the turbulence, they dissipate nonthermal features in the proton distribution function and suppress the enstrophy/entropy cascade in the velocity space, damping the spectral transfer toward large Hermite modes. This enstrophy dissipation is particularly effective in regions where the plasma distribution function is strongly distorted, suggesting that collisional effects are enhanced by fine velocity–space structures. A qualitative connection between the turbulent energy cascade in fluids and the enstrophy cascade in plasmas has been established, opening a new path to the understanding of astrophysical plasma turbulence.
Thermal State of the Intergalactic Medium at z ∼ 2–4
Authors: Telikova K. N. , Shternin P. S. , Balashev S. A. 
Published: December 2019

Abstract
We present a new method to infer parameters of the temperature–density relation in the intergalactic medium in the post-reionization epoch at z ∼ 2–4. This method is based on the analysis of the distribution of Lyα absorbers over column densities and Doppler parameters by the model joint probability density function. This approach allows us to measure the power-law index γ of the temperature–density relation and a certain combination of the temperature at the mean density T
0 and hydrogen photoionization rate Γ. To estimate T
0 and Γ separately, we employ measurements of the Lyα forest effective opacity and the model gas probability density function. We show that γ tends to be lower than 1.6 and reaches 1.3 at redshift ∼3. The inferred temperatures at the mean density are ∼(2 ± 0.5) × 104 K in the studied redshift range. Both these estimates favor He II reionization at z ≳ 3. We find that the hydrogen photoionization rate is ∼0.6 × 10−12 s−1, which is consistent with previous measurements.
Consequences of Energetic Magnetar-like Outbursts of Nearby Neutron Stars: 14C Events and the Cosmic Electron Spectrum
Authors: Wang F. Y. , Li Xinyu , Chernyshov D. O. , Hui C. Y. , Zhang G. Q. , Cheng K. S. 
Published: December 2019

Abstract
Four significant events of rapid 14C increase have taken place within the past several thousand years. The physical origin of these rapid increases is still a mystery but must be associated with extremely energetic cosmic processes. Pulsars are highly magnetized neutron stars that emit a beam of electromagnetic radiations. Any sudden release of the energy stored in the magnetic multipole field will trigger outbursts similar to the giant flares of magnetars. Here we show that the relativistic outflow from the outbursts of a nearby pulsar interacting with the interstellar medium generates a shock, which accelerates electrons to trillions of electron volts. The high-energy photons from synchrotron emission of the shock interact with Earth’s atmosphere, producing the cosmogenic nuclide 14C, which can cause the rapid 14C increases discovered in tree rings. These same relativistic electrons can account for a significant fraction of the cosmic electron spectrum in the trillion electron volts energy range, as observed by space-borne satellites. Since these outburst events can significantly affect our environment, monitoring nearby pulsars for such outbursts may be important in the future.
A Dissection of Spatially Resolved AGN Feedback across the Electromagnetic Spectrum
Authors: Fischer Travis , Smith Krista Lynne , Kraemer Steve , Schmitt Henrique , Michael Crenshaw D. , Koss Michael , Mushotzky Richard , Larson Kirsten , U Vivian , Rigby Jane 
Published: December 2019

Abstract
We present optical SuperNova Integral Field Spectrograph integral field spectroscopy, Hubble Space Telescope optical imaging, Chandra X-ray imaging, and Very Large Array radio interferometry of the merging galaxy 2MASX J04234080+0408017, which hosts a Seyfert 2 active galactic nucleus (AGN) at z = 0.046. Our observations reveal that radiatively driven, ionized gas outflows are successful to distances >10 kpc due to the low mass of the host system, encompassing the entirety of the observed optical emission. We also find that at large radii, where observed velocities cannot be reproduced by radiative driving models, high-velocity kinematics are likely due to mechanical driving from AGN winds impacting high-density host material. This impacting deposits sufficient energy to shock the host material, producing thermal X-ray emission and cosmic rays, which in turn promote the formation of in situ radio structure in a pseudo-jet morphology along the high-density lanes.
Combined Effects of Rotation and Age Spreads on Extended Main-Sequence Turn Offs
Authors: Gossage Seth , Conroy Charlie , Dotter Aaron , Cabrera-Ziri Ivan , Dolphin Andrew E. , Bastian Nate , Dalcanton Julianne J. , Goudfrooij Paul , Johnson L. Clifton , Williams Benjamin F. , Rosenfield Philip , Kalirai Jason , Fouesneau Morgan 
Published: December 2019

Abstract
The extended main-sequence turn offs (eMSTOs) of several young to intermediate age clusters are examined in the Magellanic Clouds and the Milky Way. We explore the effects of extended star formation (eSF) and a range of stellar rotation rates on the behavior of the color–magnitude diagram, paying particular attention to the MSTO. We create synthetic stellar populations based on MESA stellar models to simulate observed Hubble Space Telescope and Gaia star cluster data. We model the effect of rotation as a nonparametric distribution, allowing for maximum flexibility. In our models the slow rotators comprise the blueward, and fast rotators the redward portion of the eMSTO. We simulate data under three scenarios: nonrotating eSF, a range of rotation rates with a single age, and a combination of age and rotation effects. We find that two of the five clusters (the youngest and oldest) favor an age spread, but these also achieve the overall worst fits of all clusters. The other three clusters show comparable statistical evidence between rotation and an age spread. In all five cases, a rotation-rate distribution alone is capable of qualitatively matching the observed eMSTO structure. In future work, we aim to compare our predicted

V
sin
i

with observations in order to better constrain the physics related to stellar rotation.
Impact of Clouds and Hazes on the Simulated JWST Transmission Spectra of Habitable Zone Planets in the TRAPPIST-1 System
Authors: Fauchez Thomas J. , Turbet Martin , Villanueva Geronimo L. , Wolf Eric T. , Arney Giada , Kopparapu Ravi K. , Lincowski Andrew , Mandell Avi , Wit Julien de , Pidhorodetska Daria , Domagal-Goldman Shawn D. , Stevenson Kevin B. 
Published: December 2019

Abstract
The TRAPPIST-1 system, consisting of an ultracool host star having seven known Earth-sized planets, will be a prime target for atmospheric characterization with the James Webb Space Telescope (JWST). However, the detectability of atmospheric molecular species may be severely impacted by the presence of clouds and/or hazes. In this work, we perform 3D general circulation model (GCM) simulations with the LMD-G model supplemented by 1D photochemistry simulations at the terminator with the Atmos model to simulate several possible atmospheres for TRAPPIST-1e, 1f, and 1g: (1) modern Earth, (2) Archean Earth, and (3) CO2-rich atmospheres. The JWST synthetic transit spectra were computed using the GSFC Planetary Spectrum Generator. We find that the TRAPPIST-1e, 1f, and 1g atmospheres, with clouds and/or hazes, could be detected using JWST’s NIRSpec Prism from the CO2 absorption line at 4.3 μm in less than 15 transits at 3σ or less than 35 transits at 5σ. However, our analysis suggests that other gases would require hundreds (or thousands) of transits to be detectable. We also find that H2O, mostly confined in the lower atmosphere, is very challenging to detect for these planets or similar systems if the planets’ atmospheres are not in a moist greenhouse state. This result demonstrates that the use of GCMs, self-consistently taking into account the effect of clouds and subsaturation, is crucial to evaluate the detectability of atmospheric molecules of interest, as well as for interpreting future detections in a more global (and thus robust and relevant) approach.
Elemental Abundance Distributions in the (R, Vϕ) Plane with LAMOST DR5 and Gaia DR2
Authors: Liang Xilong , Zhao Jingkun , Chen Yuqin , Zuo Wenbo , Zhang Jiajun , Zhu Jia , Zhao Gang 
Published: December 2019

Abstract
Since Gaia DR2 was released, many velocity structures in the disk have been revealed, such as large-scale ridge-like patterns in phase space. Both kinematic information and stellar elemental abundances are needed to reveal their evolution history. We have used labels from the APOGEE survey to predict elemental abundances for a huge amount of low-resolution spectra from the Large Sky Area Multi-Object Fibre Spectroscopic Telescope survey. Deep learning with artificial neural networks can automatically draw on physically sensible features in the spectrum for their predictions. Abundances of 12 individual elements, [C/Fe], [N/Fe], [O/Fe], [Mg/Fe], [Al/Fe], [Si/Fe], [S/Fe], [Cl/Fe], [Ca/Fe], [Ti/Fe], [Mn/Fe], and [Ni/Fe], along with basic stellar labels T
eff, log g, metallicity ([M/H] and [Fe/H]), and [α/M] for 1,063,386 stars have been estimated. Then, those stars were cross-matched with Gaia DR2 data to obtain kinematic parameters. We present distributions of chemical abundances in the V

ϕ
versus R coordinate. Our results extend the chemical characterization of the ridges in the (R, V

ϕ
) plane to about R = 13 kpc toward the anticenter direction. In addition, radial elemental abundance gradients for disk stars with abs(z) < 0.5 kpc are investigated, and we fitted a line for median abundance values of bins of stars with galactocentric distance between R > 7.84 kpc and R < 15.84 kpc. The radial metallicity gradients for disk stars are, respectively, −0.0475 ± 0.0015 for R ≥ 13.09 kpc and −0.0173 ± 0.0028 for R < 13.09 kpc. Gradients for other elemental abundances are also obtained for disk stars: the [α/M] gradient is 0.0030 ± 0.0002; the [Al/Fe] gradient is 0.0030 ± 0.0002; and the [Mn/Fe] gradient is −0.0078 ± 0.0005.