bluuebunny/crossref_metadata_2025_split huggingface dataset:
DETEKSI BIDANG DATAR 2-D
Authors: Nurraharjo Eddy , Santoso Dwi Budi 
Published: June 2019

Ragam penelitian berbasis keilmuan pengolahan citra digital, telah emnjadi bagian penting dalam era internet, atau lebih dikenal dengan Internet of Things. Terlebih dalam perkembangan transformasi informasi dan data yang tren dengan istilah Big Data. Sumber data dalam pengolahan citra berupa data gambar, yang telah diubah dalam mode matriks.
Penelitian pada kesempatan ini mengangkat tematik gambar obyek 2 dimensi, yang memenuhi kriteria kotak, segitiga dan lingkaran. Pengamatan lanjutan ini dilakukan untuk melakukan integrasi dari 3 buah metode, guna mengklasifikasikan ketiga bidang geometri 2 dimensi tersebut. Adapun metodenya adalah gabungan antara Circularity-Centerplot-Boundary, yang masing-masing berfungsi pada pendeteksian bentuk obyek, warna obyek dan jumlah obyek, pada sebuah gambr individu dan kombinasinya.
Sistem yang diupayakan telah berhasil melakukan klasifikasi dengan tingkat kesesuaian hingga mendekati 100% untuk segenap data uji yang akuisisi datanya menggunakan kamera web.
IMPLEMENTASI NAÏVE BAYES UNTUK KLASIFIKASI VENTING NEGATIF FEELINGS TERHADAP PENYEDIA JASA KOMUNIKASI PADA MEDIA SOSIAL TWITTER
Authors: Yulianton Heribertus , Sutanto Felix Andreas , Hadiono Kristophorus 
Published: June 2019

Kesan masyarakat terhadap suatu penyedia jasa layanan komunikasi dapat dianalisa melalui respon mereka. Salah satu media yang dapat digunakan untuk mendapatkan kesan tersebut adalah media sosial twitter. Seiring dengan perkembangan Internet, saat ini WoM telah berkembang menjadi electronic word-of-mouth. Electronic Word of Mouth (e-WoM) communication merujuk pada pernyataan positif atau negatif dari pelanggan potensial, pelanggan aktual atau mantan pelanggan mengenai suatu produk atau perusahaan via internet. Salah satu motif dalam e-Wom adalah Venting Negative Feelings, yaitu keinginan mengungkapkan ketidakpuasan konsumen terhadap produk atau perusahaan.
Penelitian ini akan menganalisa percakapan tentang venting negative feelings pada media sosial twitter. Untuk mendapatkan data dari twitter akan mengunakan bahasa R yang telah menyediakan library untuk mengaksesnya. Hasil penelitian ini berupa data motif e-wom Venting Negative Feelings yang dapat digunakan sebagai pendukung keputusan pengguna internet dalam memilih penyedia jasa layanan internet yang baik.
ANALISIS KOMPONEN UTAMA PADA HASIL EKSTRAKSI FITUR CITRA DIGITAL
Authors: Lusiana Veronica , Al Amin Imam Husni , Hartono Budi 
Published: June 2019

Penelitian ini bertujuan untuk memperoleh jumlah dimensi data yang optimal untuk proses pencarian citra. Proses ekstraksi fitur citra menggunakan matriks GLCM (Grey- Level Co-occurrence Matrix), dengan memilih fitur tekstur citra. Fitur yang digunakan adalah mean, entropi, energi, kontras, dan homogenitas. Matriks ini menyimpan data co- occurrence tingkat keabuan piksel untuk ketetanggaan pada arah 0°, 45°, 90°, dan 135°. Proses reduksi dimensi data menggunakan analisis komponen utama (Principal Component Analysis, PCA).
Melalui hasil percobaan diperoleh, fitur yang dominan (signifikan) adalah mean dan entropi untuk ketetanggaan pada sudut 0 derajat. Pada ketetanggaan sudut 45 derajat maka fitur yang dominan adalah entropi dan kontras untuk. Fitur dominan disini adalah fitur utama yang dapat mewakili beberapa fitur-fitur lain yang digunakan untuk pencarian isi citra.
SITUACIÓN ACTUAL DEL VIH, A 35 AÑOS DE SU DESCUBRIMIENTO
Authors: De La Torre Erick 
Published: June 2019

El 20 de mayo de 1983 se identificó oficialmente el VIH, lo cual conllevó a que en el 2008 sean alardonados con el premio Nobel de Medicina los investigadores franceses Luc Montagnier y Françoise Barré-Sinoussi (1). En la actualidad, alrededor de 37 millones de personas en el mundo viven infectados con el VIH, y en el 2017 se detectaron 1,7 millones de nuevas infecciones. Asimismo, casi 22 millones de las personas infectadas reciben tratamiento antirretroviral, pero sin embargo aún se reportan alrededor de 1 millón de muertes al año causadas por el Sida. La incidencia de infecciones por el VIH en el Perú ha ido descendiendo en los últimos años, reportándose en el 2017 menos de 1 infección por cada 10 000 habitantes, además se estima que entre 58 000–100 000 personas viven infectadas con el virus y que
anualmente se reportan 810 a 2500 casos de muertes relacionadas con el Sida (2).

A pesar del gran avance que se ha dado con la terapia antiretroviral, ésta no es capaz de curar la infección, y hasta la actualidad no existe una vacuna capaz de protegernos contra el VIH. Por lo general, con una pastilla al día (que contiene 3 fármacos) el virus queda bajo control, es indetectable en plasma y no hay prácticamente riesgo de contagio. Aunque los fármacos administrados para el tratamiento de la infección han ayudado enormemente a disminuir las tasas de muerte causadas por el Sida, éstos poseen efectos secundarios que conllevan a la aparición de otras enfermedades en los pacientes, y es por ello el interés de encontrar una cura o una vacuna eficaz, ya que el tratamiento es para toda la vida (2,3). El mayor obstáculo continúa siendo el diagnóstico precoz de la infección, ya que hay diversos estudios que indican que hay un mejor pronóstico si el tratamiento se realiza lo más antes posible.

Respecto a las vacunas, la mayor tasa de protección se consiguió en un ensayo clínico en fase 3 del año
2008 (RV144), en donde se logró una eficacia del 31%. Asimismo, existen actualmente diversos programas o proyectos involucrados en diseñar una vacuna que sea capaz de protegernos de la infección con gran eficacia, aunque parece que aún no está cerca de lograrlo (4).

Las diversas organizaciones mundiales han marcado como objetivo el denominado 90–90–90. Esta estrategia consiste en que el 90% de personas infectadas con el VIH conozcan su condición, el 90% de estas personas reciban el tratamiento antirretroviral y que el 90% de estas últimas mantengan al virus a
niveles indetectables. Se deben seguir haciendo muchos esfuerzos para lograr esto a nivel mundial, ya
que para el año 2017 tres de cada cuatro personas que vivían con el VIH (75%) conocían su estado, entre
estas personas cuatro de cada cinco (79%) tenían acceso al tratamiento, de las cuales el 81% habían logrado la supresión viral (2).
PREVALENCIA DE SÍNTOMAS NO MOTORES EN PACIENTES CON ENFERMEDAD DE PARKINSON: UNA REVISIÓN.
Authors: Cuba-Antezana Analí , Anicama-Hernández Ángel 
Published: June 2019

Introducción: La enfermedad de Parkinson constituye una de las enfermedades
neurodegenerativas más prevalentes en el mundo y en nuestro país, afectando el 1 al 3 % de la población, debido a su carácter progresivo afecta de forma importante la calidad de vida de quienes la padecen. Dentro de la enfermedad existen los síntomas no motores los cuales han ganado relevancia en los últimos años debido a su elevada prevalencia que se incrementa conforme la enfermedad progresa y un impacto negativo sobre la calidad de vida de los pacientes que puede ser mayor que el de las manifestaciones motoras (1). Objetivo: Realizar una búsqueda bibliográfica para determinar la prevalencia de síntomas no motores en pacientes con Enfermedad
de Parkinson. Materiales y métodos: : Es un estudio descriptivo en donde se realiza la búsqueda bibliográfica en la base de datos de Pubmed, Medline y la Academia Americana de Neurología. Discusión: los síntomas no motores en la enfermedad de Parkinson incluyen síntomas vegetativos, neuropsiquiátricos, anosmia, trastornos del sueño, anomalías oculares entre las más frecuentes que esta presentes en un 80 a 90% según la literatura. Según esta revisión se encuentra como síntoma no motor más frecuente la depresión, habiendo diferencias entre hombres y mujeres, y si toman o
no medicación antiparkinsoniana. Conclusiones: Los síntomas no motores en pacientes con Enfermedad de Parkinson constituyen un aspecto importante de la enfermedad, que incluso preceden a los síntomas motores por lo cual deben ser detectados tempranamente para un manejo oportuno y multidisciplinario.
PONENCIA: ESTRATEGIAS PARA LOGRAR UNA CURA FUNCIONAL DEL VIH
Authors: De La Torre Erick 
Published: June 2019

Hace 35 años que conocemos a este virus y aún no hemos conseguido doblegarlo por completo. Sin embargo hay mucha investigación en este campo cuyo objetivo es contribuir a encontrar una cura funcional para la infección, que consiste en limitar el tamaño del reservorio viral y controlar la carga viral a través de una respuesta inmunológica adecuada (1). Entre un 2 – 5 % de los pacientes que están infectados por el VIH, son denominados LTNPs (long term non-progressors o progresores lentos), los cuales son capaces de mantener niveles altos de células T CD4 y/o baja carga viral sin estar en tratamiento antirretroviral, los cuales constituyen un modelo natural de cura funcional y que hay diversos factores genéticos o inmunológicos que están involucrados en este control de la infección (2,3).
La dinámica y los mecanismos involucrados en la latencia viral y en la persistencia de reservorios virales son muy complejos, y constituyen el mayor obstáculo para lograr una cura funcional de la infección (4).
Las diversas estrategias para que se han evaluado, y que algunas siguen en curso, durante estos últimos años para disminuir o limitar la expansión de los reservorios, así como mejorar los parámetro inmunológicos, dentro del contexto de conseguir una cura funcional
Extended X-Ray Study of M49: The Frontier of the Virgo Cluster
Authors: Su Y. , Kraft R. P. , Nulsen P. E. J. , Jones C. , Maccarone T. J. , Mernier F. , Lovisari L. , Sheardown A. , Randall S. W. , Roediger E. , Fish T. M. , Forman W. R. , Churazov E. 
Published: June 2019

Abstract
The M49 group, residing outside the virial radius of the Virgo cluster, is falling onto the cluster from the south. We report results from deep XMM-Newton mosaic observations of M49. Its hot gas temperature is 0.8 keV at the group center and rises to 1.5 keV beyond the brightest group galaxy (BGG). The group gas extends to radii of ∼300 kpc to the north and south. The observations reveal a cold front ∼20 kpc north of the BGG center and an X-ray-bright stripped tail 70 kpc long and 10 kpc wide to the southwest of the BGG. We argue that the atmosphere of the infalling group was slowed by its encounter with the Virgo cluster gas, causing the BGG to move forward subsonically relative to the group gas. We measure declining temperature and metallicity gradients along the stripped tail. The tail gas can be traced back to the cooler and enriched gas uplifted from the BGG center by buoyant bubbles, implying that active galactic nucleus outbursts may have intensified the stripping process. We extrapolate to a virial radius of 740 kpc and derive a virial mass of 4.6 × 1013
M
⊙ for the M49 group. Its group atmosphere appears truncated and deficient when compared with isolated galaxy groups of similar temperatures. If M49 is on its first infall to Virgo, the infall region of a cluster could have profound impacts on galaxies and groups that are being accreted onto galaxy clusters. Alternatively, M49 may have already passed through Virgo once.
FLUTUAÇÕES CLIMÁTICAS DA PRECIPITAÇÃO NO VALE DO ITAJAÍ (SC)
Authors: Severo Dirceu Luis , Silva Hélio Dos Santos , Tachini Mário 
Published: June 2019

A precipitação é uma componente climática de alta variabilidade espacial e temporal e, por isso estudos relacionados ao seu comportamento podem auxiliar nas práticas de gerenciamento de risco de diversas atividades econômicas. Este trabalho analisou as diferentes escalas temporais presentes na série temporal de precipitação registrada no posto pluviométrico da Agência Nacional de Águas (ANA) instalado no município de Pomerode, estado de Santa Catarina, no período de 1930 a 2015. A análise de múltiplas escalas foi realizada com a Transformada Wavelet enquanto que a análise de tendências foi feita através do teste de Mann-Kendall. As oscilações foram analisadas nas bandas intrasazonal, interanual, decadal e intermediárias. Na banda intrasazonal encontraram-se picos de alta variância significativos, principalmente em anos de El Niño. Nas bandas interanual e decadal notou-se sobreposição dos picos significativos nas flutuações que apresentam períodos de 2,9, 8,2, 13,1 e 28,2 anos. Esta sobreposição de escalas temporais pode explicar a alta variabilidade temporal da precipitação no vale do Itajaí.
Forum
Authors: Goodman Penelope J. 
Published: June 2019

Abstract

A forum was the monumental civic center of a city in the western Roman empire. Already common by the third century
bce
, fora became increasingly regularized and formalized over the succeeding centuries. Those in Rome always remained important archetypes, but new developments such as the double forum‐basilica complex flourished in the northwestern provinces. Typically an open rectangular area surrounded by public buildings, the forum was the metaphorical heart of urban life, offering essential space for communal activities such as markets, religious ceremonies, and political proceedings. It also became an important locus for elite display directed towards both residents and visitors.
Hinterland
Authors: Goodman Penelope J. 
Published: June 2019

Abstract
A hinterland is the primary short‐distance trading area for an urban central place. In antiquity, high transport costs meant that this area usually supplied the bulk of a city's food needs, making it expedient to control it politically. Nonetheless, long‐distance trade networks allowed some cities to cultivate economic hinterlands which extended well beyond their own directly‐controlled territory. City and hinterland have sometimes been seen as starkly distinct or even conflicting units, but in reality, they were intimately connected. New data generated by the growing discipline of landscape archaeology is increasingly clarifying the interdependent relationship between the two.
Calendar, Jewish
Authors: Stern Sacha 
Published: June 2019

Abstract
The function of Jewish calendars in antiquity was mainly to determine the dates of biblical and other Jewish festivals; in Judaea/Palestine, they were also used for more general purposes. Jewish calendars were always lunar, except for the short‐lived, schematic calendars of the Dead Sea Scrolls. The lunar calendars were diversely reckoned among Palestinian and Diaspora communities. In Late Antiquity, they gradually turned into fixed schemes.
Cerveteri (Caere)
Authors: Pieraccini Lisa C. 
Published: June 2019

Abstract

The Etruscan metropolis of Caere, known today as Cerveteri and located some 45 km northwest of Rome, was situated on a tufa outcrop with a commanding view of the Tyrrhenian Sea. It is famous for its monumental tombs distributed over several necropoleis. Caere flourished in the eighth century
bce
, but reached its zenith by the seventh and sixth centuries
bce
, producing some of the most iconic works of Etruscan art (early bucchero, life‐size clay sculpture, gold jewelry, painted wall plaques and vases). The city's urban splendor was evident in its temples, sanctuaries, and shrines.
Conic sections
Authors: Fried Michael N. 
Published: June 2019

Abstract

Conic sections are curves obtained by cutting a cone with a plane which does not pass through the vertex of the cone. The principal conic sections are the parabola, the hyperbola, and ellipse. The circle can also be obtained as a conic section, but, in Greek mathematics, the circle is usually defined by simpler means. Conic sections were studied intensely throughout the Hellenistic period, but particularly by Apollonios of Perge, whose work
Conics
stands as one of the great works of all Greek mathematics.
Melampus
Authors: Oberhelman Steven M. 
Published: June 2019

Abstract
Melampus was reputedly the first mortal to practice medicine through incantations and remedies based on animal and mineral substances. He was also the first to master all the arts of divination (portents, inspection of sacrificial victims, and inspiration). Melampus was said to introduce many cults into Greece, including the worship of Dionysus and of Demeter. Melampus’ descendants became a line of seers and prophets.
Paul of Aigina
Authors: Oberhelman Steven M. 
Published: June 2019

AbstractPaul of Aigina (fl. seventh centuryce) was an important physician of the Byzantine period who wrote a compendium dealing with illness, surgery, and pharmacology. His medical handbook was intended to serve as an encyclopedic record of major ancient and early Byzantine Greek doctors and herbalists. Paul's work, through Syriac and Arabic translations, greatly influenced Islamic medicine and the development of Western medicine.
Siblings
Authors: Harders Ann‐Cathrin 
Published: June 2019

Abstract
The relationship between siblings is special due to its longevity and its rather egalitarian character, especially between the sexes. It was seen as an intimate and affectionate bond; although brotherly solidarity was tested due to laws of inheritance and competition for honors and offices, brothers were expected to cooperate. In Greece as well as in Rome, they cared for their sisters and their offspring and acted on behalf of the father as a sister's guardian. The sibling bond thus proved to be a positive model to shape other social relationships as well, most notably those between members of early Christian communities.
Martial (Marcus Valerius Martialis)
Authors: Coleman Kathleen M. 
Published: June 2019

Abstract

The Spanish poet Martial, who moved to Rome ca. 64
ce
, composed fifteen books of epigrams between the reigns of Titus and Trajan. His reflection of contemporary social life is both vivid and stridently opinionated; his purpose is wit, not impartiality. He expresses contemporary prejudices against foreigners and other minorities, and is notorious for his obscenity. He flatters his many influential patrons, most prominently the emperor Domitian, while simultaneously mocking the patronage system. His inconsistencies are best ascribed to poetic opportunism, and it is now generally recognized that he adopts an authorial persona, rather than speaking in his own voice.
Sardinia, Nuraghe Sirai
Authors: Perra Carla 
Published: June 2019

Abstract

Nuraghe Sirai (southwest Sardinia) is a unique example of an integrated settlement pattern in the local Iron Age II between Nuragics and Phoenician settlers. Its importance lies in the evidence of a new phase in Nuragic civilization and in its original and mixed material culture of broadly mid‐sixth‐century
bce
date. Thanks to the large amount of data collected and research undertaken (a new site typology – the fortress – as well as new shapes in pottery and architectural artifacts), it is possible to suggest a
preliminary repertoire
of late Sardinian IAII material culture (625–550
bce
) and to document in more aspects the most intensive Phoenician presence in the Central Mediterranean.
Cassius (Gaius Cassius Longinus)
Authors: Gamauf Richard 
Published: June 2019

Abstract

We are better informed about the life and career of Cassius Longinus than of most jurists. He held various high public offices under the Julio‐Claudian dynasty and is perhaps best known for a speech he gave to the Senate in 61
ce
advocating a harsh line in response to the murder of the Urban Prefect by a member of his household. He was the leader for a time of the group of jurists known as the “Sabinian school,” which was at times called after him (“Cassians”).
Marcellus (Ulpius Marcellus)
Authors: Maragno Giorgia 
Published: June 2019

Abstract

Ulpius Marcellus (mid‐ to late second century
ce
) was a prominent Roman jurist of the age of Antoninus Pius and Marcus Aurelius who participated in their imperial councils. Little is known about his life; he was probably born about 120–5 and died around 185. Marcellus, well versed in rhetoric and an original legal thinker, is often represented in Justinian's
Digest
. His production is not vast but still significant. He wrote a
Commentary on the Lex Iulia et Papia
,
Notes on Pomponius's single book of rules
, a
Single book of answers
, a monograph about the
Duties of a consul
,
Notes on Julian's Digest
, and a
Digest
.
Age differences in life stories and neuroticism mediate age differences in subjective well‐being
Authors: Jensen Rikke A.A. , Kirkegaard Thomsen Dorthe , O'Connor Maja , Mehlsen Mimi Y. 
Published: June 2019

SummaryWe examined whether age differences in life stories and personality traits mediated age differences in subjective well‐being. One hundred one young, 77 middle‐aged, and 81 older participants completed measures of subjective well‐being and personality traits. They described chapters and specific memories in their life stories and rated these on emotional tone and positive and negative self‐event connections. Older participants scored higher on subjective well‐being, rated their life stories as more positive, and scored lower on neuroticism compared with both young and middle‐aged participants. Age differences in subjective well‐being were mediated by life stories and neuroticism, with neuroticism being the strongest mediator. We suggest that changes in personality may enable older individuals to interpret events and themselves in a positive light, which help enhance their subjective well‐being.
High‐Throughput Scaffold System for Studying the Effect of Local Geometry and Topology on the Development and Orientation of Sprouting Blood Vessels
Authors: Szklanny Ariel A. , Debbi Lior , Merdler Uri , Neale Dylan , Muñiz Ayse , Kaplan Ben , Guo Shaowei , Lahann Joerg , Levenberg Shulamit 
Published: June 2019

AbstractLive tissues require vascular networks for cell nourishing. Mimicking the complex structure of native vascular networks in vitro requires understanding the governing factors of early tubulogenesis. Current vascularization protocols allow for spontaneous formation of vascular networks; however, there is still a need to provide control over the defined network structure. Moreover, there is little understanding on sprouting decision and migration, especially within 3D environments. Here, tessellated polymer scaffolds with various compartment geometries and a novel two‐step seeding protocol are used to study vessel sprouting decisions. Endothelial cells first organize into hollow vessels tracing the shape contour with high fidelity. Subsequent sprouts emerge in specific directions, responding to compartment geometry. Time‐lapse imaging is used to track vessel migration, evidencing that sprouts frequently emerge from the side centers, mainly migrating toward opposing corners, where the density of support cells (SCs) is the highest, providing the highest levels of angiogenic factors. SCs distribution is quantified by smooth muscle actin expression, confirming the cells preference for curved compartment surfaces and corners. Displacements within the hydrogel correlate with SCs distribution during the initial tubulogenesis phase. This work provides new insight regarding vessel sprouting decisions that should be considered when designing scaffolds for vascularized engineered tissues.