bluuebunny/crossref_metadata_2025 huggingface dataset:
La influencia de la familia y la educación en la autonomía de los jóvenes: una revisión sistemática
Authors: Bernal Romero Teresita , Melendro Estefanía Miguel , Charry Claudia , Goig Martínez Rosa
Published: June 2020

INTRODUCCIÓN. El objetivo de este trabajo ha sido categorizar e integrar los resultados de investigaciones sobre la influencia de la familia y la educación en la autonomía de los jóvenes, con el fin de avanzar en su comprensión. Estos dos escenarios son resaltados por los investigadores como los más significativos en la construcción de la autonomía. MÉTODO. La revisión sistemática se realizó siguiendo la metodología planteada en la Cochrane Collaboration y la Declaración PRISMA a partir de una muestra de 31 artículos de investigación sobre autonomía y juventud, seleccionados a partir de diez bases de datos internacionales, con criterios de pertinencia y suficiencia, en el periodo comprendido entre enero de 2014 y noviembre de 2018. Se trata de investigaciones de 17 países, fundamentalmente de tipo cuantitativo, aunque también cualitativo y mixto, cuya principal fuente de información son los propios jóvenes. RESULTADOS. En los resultados sobre autonomía y familia sobresale la incidencia de los estilos educativos parentales, donde el apoyo de los padres se relaciona con índices más altos de autonomía. En la educación formal, la autonomía en los procesos educativos facilita el aprendizaje y es fundamental en el tránsito a la educación superior. Se resalta el apoyo de los profesionales en las acciones socioeducativas en escenarios no formales y con jóvenes vulnerables, necesario para procesos de autonomía. Se ratifica, asimismo, la importancia de entender la autonomía como un proceso relacional y social, más que meramente individual. DISCUSIÓN. Destacan las aportaciones de este estudio en cuanto a la sistematización del campo de conocimiento sobre autonomía juvenil y sobre estilos familiares, educación formal y no formal, rol de los educadores e intervención socioeducativa con jóvenes en dificultad social.
Use of xenograft bone block for staged ridge augmentation prior to dental implant placement in trauma patients
Authors: Chesterman James , Durey Kathryn , Chan Martin
Published: June 2020

We review the outcome data of patients who underwent horizontal alveolar ridge augmentation to assess the viability of equine xenograft blocks.
Strategies to improve diagnosis and risk assessment for oral cancer patients
Authors: Adeoye John , Thomson Peter
Published: June 2020

To realise the benefits of new diagnostic techniques for the prediction of oral cancer, further validation and multicentre analyses are needed to determine their clinical impact in contemporary practice.
Nivell en competències bàsiques dels estudiants del grau de
Química de la Universitat de Barcelona. Correspondència amb les
qualificacions d’accés i del grau
Authors: Reigada-Sanz Ramon , Gargallo-Gómez Raimundo , Sarret-Pons Maria , Angurell-Purroy Inmaculada , Nicolás-Galindo Ernesto , Corbella-Cordomí Montserrat , Farrera-Piñol Joan-Antoni
Published: June 2020

INTRODUCCIÓ. Les competències en raonament matemàtic,
raonament lògic, raonament geometricoespacial i pensament crític són
fonamentals en qualsevol ensenyament superior científic o tecnològic
i, en particular, en un grau de Química. En aquest estudi es pretén
esbrinar fins a quin punt la nota d’accés a la universitat i la nota
d’expedient dels estudiants del grau de Química de la Universitat de
Barcelona reflecteixen el nivell assolit en aquestes quatre
competències. METODOLOGIA. S’ha dissenyat un test amb preguntes i
problemes de diferent grau de dificultat per avaluar el nivell en
cadascuna d’aquestes competències. Aquest test s’ha passat als
alumnes del grau de Química i les puntuacions obtingudes s’han
correlacionat amb la nota d’accés dels estudiants de nou ingrés i
amb la nota d’expedient del grau dels estudiants veterans.
RESULTATS. En els estudiants veterans s’observa una clara correlació
entre les puntuacions de cada competència i la nota d’expedient del
grau. En canvi, la correlació amb la nota d’accés és molt feble o
inexistent. CONCLUSIÓ. La nota d’accés a la universitat dels
estudiants del grau de Química de la Universitat de Barcelona no
reflecteix el nivell assolit en aquestes competències fonamentals,
mentre que la nota d’expedient del grau sí que el
reflecteix.
Advanced iterative algorithm for phase calibration of spatial light
modulators integrated in optical instrumentation in a vibration
environment
Authors: Silva-López Manuel , Uribe-Patarroyo Néstor , Álvarez-Herrero Alberto
Published: June 2020

We present a method to obtain the phase modulation characteristic curve
of a spatial light modulator (SLM) under severe vibration conditions.
The procedure is based on the well-known advanced iterative algorithm
(AIA), which allows wavefront extraction from unknown phase-shifted
interferograms. Generally, AIA is used to determine the wavefront and
the determined phase shifts are of little interest. In contrast, in
our method, the main goal of using AIA is to determine the unknown
phase shifts induced by an SLM during the calibration procedure. Using
a segmented approach to calibration, AIA enables successful
calibration even in the presence of additional random phase shifts due
to environmental changes. This method has the potential to calibrate
SLMs integrated in complex optical instruments with little to no
modifications to the optical setup, no matter the environmental
conditions. We demonstrate our technique by calibrating an SLM under
vacuum conditions (

10

−
5

m
b
a
r

) in a common-path configuration
compatible with usage of an SLM as a wavefront modulator at the pupil
plane of an instrument. Our technique compensates for the vibrations
produced by the vacuum pumps and reduces an order of magnitude the
root-mean-squared error of the calibration curve evaluated with
vibration errors. Our technique enhances the potential use of SLMs in
complex optical systems, including aerospace optical
instrumentation.
Image based aberration retrieval using helical point spread functions
Authors: Berlich René , Stallinga Sjoerd
Published: June 2020

A practical method for determining wavefront aberrations in optical systems based on the acquisition of an extended, unknown object is presented. The approach utilizes a conventional phase diversity approach in combination with a pupil-engineered, helical point spread function (PSF) to discriminate the aberrated PSF from the object features. The analysis of the image’s power cepstrum enables an efficient retrieval of the aberration coefficients by solving a simple linear system of equations. An extensive Monte Carlo simulation is performed to demonstrate that the approach makes it possible to measure low-order Zernike modes including defocus, primary astigmatism, coma, and trefoil. The presented approach is tested experimentally by retrieving the two-dimensional aberration distribution of a test setup by imaging an extended, unknown scene.
Temporal data-driven failure prognostics using BiGRU for optical networks
Authors: Zhang Chunyu , Wang Danshi , Wang Lingling , Song Jianan , Liu Songlin , Li Jin , Guan Luyao , Liu Zhuo , Zhang Min
Published: June 2020

With a focus on service interruptions occurring in optical networks, we propose a failure prognostics scheme based on a bi-directional gated recurrent unit (BiGRU) from the perspective of time-series processing, which leverages actual datasets from the network operator. BiGRU neural networks can capture the temporal features of multi-sourced data and incorporate contextual information. A principal component analysis is introduced to reduce the data dimensionality. Experimental results show that the average accuracy of the prognostics, F1 score, false positive rate, and false negative rate of our method are 99.61%, 99.63%, 0.29%, and 0.84%, respectively, which proves the feasibility of the proposed scheme for failure prognostics of equipment used in optical networks.
Approaching quantum-limited imaging resolution without prior knowledge of the object location
Authors: Grace Michael R. , Dutton Zachary , Ashok Amit , Guha Saikat
Published: June 2020

Passive imaging receivers that demultiplex an incoherent optical field
into a set of orthogonal spatial modes prior to detection can surpass
canonical diffraction limits on spatial resolution. However, these
mode-sorting receivers exhibit sensitivity to contextual nuisance
parameters (e.g., the centroid of a clustered or extended object),
raising questions on their viability in realistic scenarios where
prior information about the scene is limited. We propose a multistage
detection strategy that segments the total recording time between
different physical measurements to build up the required prior
information for near quantum-optimal imaging performance at
sub-Rayleigh length scales. We show, via Monte Carlo simulations, that
an adaptive two-stage scheme that dynamically allocates recording time
between a conventional direct detection measurement and a binary mode
sorter outperforms idealized direct detection alone when no prior
knowledge of the object centroid is available, achieving one to two
orders of magnitude improvement in mean squared error for simple
estimation tasks. Our scheme can be generalized for more sophisticated
tasks involving multiple parameters and/or minimal prior
information.
Single-chip holographic beam steering for lidar by a digital micromirror device with angular and spatial hybrid multiplexing
Authors: Hellman Brandon , Luo Chuan , Chen Guanghao , Rodriguez Joshua , Perkins Charles , Park Jae-Hyeung , Takashima Yuzuru
Published: June 2020

A digital micromirror device (DMD) based holographic beam steering technique is reported that multiplexes fine-steering binary amplitude gratings with a coarse-steering programmable blazed grating. The angular spatial light modulation (ASLM) technique encodes the spatial pattern of the binary amplitude grating at the same plane as the angular modulation set by a phase map of the DMD-based beam steering technique. The beam steering technique is demonstrated at 532 nm and implemented into a 905 nm lidar system. The results of the lidar system tests are presented, achieving a 44° field-of-view, 0.9°×0.4° (H×V) angular resolution, 1 m max distance, 1.5 kHz sampling, and 7.8 FPS video. Scalability techniques are proposed, including max distance increases to over 100 m.
The diamond mesh, a phase-error- and loss-tolerant field-programmable MZI-based optical processor for optical neural networks
Authors: Shokraneh Farhad , Geoffroy-gagnon Simon , Liboiron-Ladouceur Odile
Published: June 2020

This paper presents the performance analysis of a phase error- and loss-tolerant multiport field-programmable MZI-based structure for optical neural networks (ONNs). Compared to the triangular (Reck) mesh, our proposed diamond mesh makes use of a larger number of MZIs, leading to a symmetric topology and adding additional degrees of freedom for the weight matrix optimization in the backpropagation process. Furthermore, the additional MZIs enable the diamond mesh to optimally eliminate the excess light intensity that degrades the performance of the ONNs through the tapered out waveguides. Our results show that the diamond topology is more robust to the inevitable imperfections in practice, i.e., insertion loss of the constituent MZIs and the phase errors. This robustness allows for better classification accuracy in the presence of experimental imperfections. The practical performance and the scalability of the two structures implementing different sizes of optical neural networks are analytically compared. The obtained results confirm that the diamond mesh is more error- and loss-tolerant in classifying the data samples in different sizes of ONNs.
Random lasing in cesium lead iodide (CsPbI3) thin films with no surface passivation
Authors: Wu Zong Yu , Jian Bo-Lun , Wu Chun-Sheng , Hsu Hsu-Cheng
Published: June 2020

We report the CsPbI3 random lasing at room temperature fabricated by a chemical deposition method. The CsPbI3 thin films with high crystalline quality have intense PL emission and easily achieve the lasing behavior with the Q-factor value over 7000. The lasing behavior of CsPbI3 thin films can be classified as random lasing by measuring lasing spectra at different collective angles. The fast Fourier transform analysis of the lasing spectra is employed to determine the effective cavity length. Most important of all, the lasing stability investigation shows the prolonged lasing stability over 4.8 X 105 laser shots in air.
Laser emission at 4.5 THz from 15NH3 and a mid-infrared quantum-cascade laser as a pump source
Authors: Wienold Martin , Zubairova Alsu , Hübers Heinz-Wilhelm
Published: June 2020

We present an optically pumped terahertz gas laser, which is based on a mid-infrared quantum-cascade laser as a pump source, a transversely pumped standing wave resonator, and 15NH3 as a gain medium. We observe several laser lines around 4.5 THz, corresponding to rotational transitions in the ν2 band of ammonia. So far, these are the highest frequencies obtained from a QCL-pumped THz gas laser. The involved molecular transitions are unambiguously identified by high-resolution spectroscopy.
Towards CW modelocked laser on chip – a large mode area and NLI for stretched pulse mode locking
Authors: Singh Neetesh , Ippen Erich , Kärtner Franz X.
Published: June 2020

Integrated modelocked lasers with high power are of utmost importance for next generation optical systems that can be field-deployable and mass produced. Here we study fully integrated modelocked laser designs that have the potential to generate ultrashort, high power, and high quality pulses. We explore a large mode area laser for high power pulse generation and study the various mode-locking regimes of dispersion managed soliton pulses in net anomalous and net normal dispersion cavities. Furthermore, we study numerically and experimentally general properties and tunability of a fast integrated saturable absorber based on low loss silicon nitride nonlinear interferometer. We believe this work guides the exploration of the future for integrated high power modelocked lasers.
Y4-Net: a deep learning solution to one-shot dual-wavelength digital holographic reconstruction
Authors: Wang Kaiqiang , Kemao Qian , Di Jianglei , Zhao Jianlin
Published: June 2020

In this Letter, a deep learning solution (Y4-Net, four output channels network) to one-shot dual-wavelength digital holography is proposed to simultaneously reconstruct the complex amplitude information of both wavelengths from a single digital hologram with high efficiency. In the meantime, by using single-wavelength results as network ground truth to train the Y4-Net, the challenging spectral overlapping problem in common-path situations is solved with high accuracy.
Navigating Terahertz Spectrum via Photomixing
Authors: Yang Shang-Hua , Jarrahi Mona
Published: June 2020

Photomixers, including recent designs based on plasmonics, can
combine tunability, power and room-temperature operation in both THz
transmitters and receivers, for applications in 5G communications,
astronomy and more.
Learned rotationally symmetric diffractive achromat for full-spectrum computational imaging
Authors: Dun Xiong , Ikoma Hayato , Wetzstein Gordon , Wang Zhanshan , Cheng Xinbin , Peng Yifan
Published: June 2020

Diffractive achromats (DAs) promise ultra-thin and light-weight form
factors for full-color computational imaging systems. However,
designing DAs with the optimal optical transfer function (OTF)
distribution suitable for image reconstruction algorithms has been a
difficult challenge. Emerging end-to-end optimization paradigms of
diffractive optics and processing algorithms have achieved impressive
results, but these approaches require immense computational resources
and solve non-convex inverse problems with millions of parameters.
Here, we propose a learned rotational symmetric DA design using a
concentric ring decomposition that reduces the computational
complexity and memory requirements by one order of magnitude compared
with conventional end-to-end optimization procedures, which simplifies
the optimization significantly. With this approach, we realize the
joint learning of a DA with an aperture size of 8 mm and an image
recovery neural network, i.e., Res-Unet, in an end-to-end manner
across the full visible spectrum (429–699 nm). The peak
signal-to-noise ratio of the recovered images of our learned DA is
1.3 dB higher than that of DAs designed by conventional sequential
approaches. This is because the learned DA exhibits higher amplitudes
of the OTF at high frequencies over the full spectrum. We fabricate
the learned DA using imprinting lithography. Experiments show that it
resolves both fine details and color fidelity of diverse real-world
scenes under natural illumination. The proposed design paradigm paves
the way for incorporating DAs for thinner, lighter, and more compact
full-spectrum imaging systems.
Low-temperature GaAs-based plasmonic photoconductive terahertz detector with Au nano-islands
Authors: Murakami Hironaru , Takarada Tomoya , Tonouchi Masayoshi
Published: June 2020

We have fabricated low-temperature grown GaAs (LT-GaAs)-based plasmonic photoconductive antennas by RF sputtering of Au nanoparticles and have evaluated their terahertz detection properties. Localized surface plasmon resonance enhances the electric fields near the surface and increases the optical absorption of nanoparticles. The resonance frequency depends on the density of electrons, the effective electron mass, and the size and shape of the nanoparticles. Therefore, we tried to develop a high-sensitivity LT-GaAs photoconductive detector (PCD), which is effective over a wide range of wavelengths, by RF sputtering of Au nano-islands with a variety of aspect ratios from 1.2 to 5.1 on the dipole gap region of the PCD. As a result, we succeeded in increasing the sensitivity by 29% and 40% in the amplitude of observed terahertz pulse for 800 nm and 1560 nm femtosecond laser excitations, respectively.
Review of exceptional point-based sensors
Authors: Wiersig Jan
Published: June 2020

Exceptional points are spectral singularities in open quantum and wave systems that exhibit a strong spectral response to perturbations. This feature can be exploited for a new generation of sensors. This paper explains the basic mechanism and comprehensively reviews the recent developments. In particular, it highlights the influence of classical noise and fundamental limitations due to quantum noise.
Online-Plattformen und Personennahe Dienstleistungen: Eine explorative Studie über vertrauensbildende Maßnahmen
Authors: Mehrwald Pascal , Willy Marlene Sophia , Binder Kim-Kelly
Published: June 2020

Die Sharing Economy und Online-Plattformen nehmen zu und verändern unser tägliches Leben. Immer mehr Produkte und Dienstleistungen sind über Peer-to-Peer-Plattformen (P2P) online buchbar. Es ist daher unerlässlich zu verstehen, wie technologiegestützte, vertrauensbildende Maßnahmen (VBM) eingesetzt werden, um Vertrauen in solchen Umgebungen aufzubauen, in denen kein direkter persönlicher Kontakt möglich ist. In dieser Studie haben wir explorativ Daten von 150 deutschen und amerikanischen Online-Plattformen erhoben und eine Liste von 53 vertrauensbildenden Maßnahmen abgeleitet, um einen detaillierten Überblick über die aktuelle Situation deutscher Plattformen im Bereich der personennahen Dienstleistungen zu erhalten. Neben der Analyse, welche Maßnahmen in diesem Bereich häufig genutzt werden und daher wichtig scheinen, berichten wir, dass auf deutschen Plattformen Maßnahmen nicht so stark genutzt werden wie beispielsweise in den USA. Wir ergänzen die Literatur über online Vertrauen und schaffen eine Forschungsbasis zu vertrauensbildenden Maßnahmen, wie Reputationssysteme oder persönliche Fotos, indem wir einen Überblick über zahlreiche Maßnahmen geben. Die Ergebnisse sollten in zukünftiger Forschung auch hinsichtlich ihrer Effektivität untersucht werden, deuten aber darauf hin, dass Anbieter aus Deutschland die Nutzung von VBM verbessern müssen, um eine Online-Umgebung zu schaffen, in der die Nutzer sich gegenseitig, sowie die Plattform selbst, als vertrauenswürdig wahrnehmen.
Proximity Ligation Assay as a Tool for Antibody Validation in Human Tissues
Authors: Lindskog Cecilia , Backman Max , Zieba Agata , Asplund Anna , Uhlén Mathias , Landegren Ulf , Pontén Fredrik
Published: June 2020

Immunohistochemistry (IHC) is the accepted standard for spatial analysis of protein expression in tissues. IHC is widely used for cancer diagnostics and in basic research. The development of new antibodies to proteins with unknown expression patterns has created a demand for thorough validation. We have applied resources from the Human Protein Atlas project and the Antibody Portal at National Cancer Institute to generate protein expression data for 12 proteins across 39 cancer cell lines and 37 normal human tissue types. The outcome of IHC on consecutive sections from both cell and tissue microarrays using two independent antibodies for each protein was compared with in situ proximity ligation (isPLA), where binding by both antibodies is required to generate detection signals. Semi-quantitative scores from IHC and isPLA were compared with expression of the corresponding 12 transcripts across all cell lines and tissue types. Our results show a more consistent correlation between mRNA levels and isPLA as compared to IHC. The main benefits of isPLA include increased detection specificity and decreased unspecific staining compared to IHC. We conclude that implementing isPLA as a complement to IHC for analysis of protein expression and in antibody validation pipelines can lead to more accurate localization of proteins in tissue.
Membicarakan Masyarakat Pinggiran di Indonesia
Authors: Tirtosudarmo Riwanto
Published: June 2020

Salah satu hasil dari reformasi politik setelah lengser keprabonnya Suharto pada tanggal 23 Mei 1998 adalah keterbukaan untuk membicarakan berbagai hal yang oleh Orde Baru dianggap tabu. Sebagai sebuah rezim otoriter yang berkuasa lebih dari 30 tahun (1967-1998) tidak sedikit tabu yang berhasil diciptakan. Berbagai tabu itu diciptakan sebagai bagian dari cara pemerintah Orde Baru menjamin kestabilan kekuasaan yang terpusat di tangan sang penguasa tunggal, Presiden Suharto. Adalah sebuah tabu untuk membicarakan secara terbuka tentang suku bangsa, agama apalagi tentang federalisme. Oleh Orde Baru hal-hal itu perlu ditutup dari pembicaraan publik karena bisa mengancam persatuan bangsa dan membahayakan kesatuan negara. Persatuan bangsa dan kesatuan negara seolah-olah raison d’etre adanya Orde baru, padahal keduanya sekedar alat legitimasi kekuasaan belaka.
Adaptasi Sosial Gay Muslim Indonesia Terhadap Agama dan Keluarga The social adaptation of Gay Muslim to Religion and Family
Authors: Adihartono Wisnu
Published: June 2020

The LGBT groups in Indonesia have little or no power and limited access to fight for their rights. Growing up in a system where one cannot be or say who they truly are, places them in a position where they are in a constant state of having to negotiate life within a hostile environment. This paper will look their (social) adaptation between their religion (Islam) and their family. They have to obey their religion, as well as they also have to obey and respect to their family in order to preserve the family’s honor. Those complexities raise a hierarchy, which is side by side with the religious teachings, culture and norms that causes a difficulty for them to come out showing as a gay. For this paper, I took the data from my doctoral research at Ecole des Hautes Etudes en Sciences Sociales (EHESS), France which I completed in 2015. For the purposes of this paper, I only used ten questions that are very closely related to religious and family issues. Kelompok Lesbian, Gay, Biseksual, dan Transjender (LGBT) di Indonesia memiliki akses yang sangat terbatas untuk memperjuangkan hak-hak mereka. Tumbuh dalam sistem di mana seseorang tidak dapat mengatakan siapa mereka sebenarnya, menempatkan mereka dalam posisi di mana mereka berada dalam keadaan konstan. Mereka harus melakukan adaptasi dalam lingkungan yang bermusuhan. Makalah ini akan melihat adaptasi (sosial) mereka di antara agama (Islam) dan keluarga. Mereka harus mematuhi agama mereka dan juga harus menghormati keluarga mereka untuk menjaga kehormatan keluarga. Kompleksitas itu memunculkan hierarki dalam ajaran agama, budaya, dan norma-norma yang menyebabkan mereka sulit tampil sebagai gay. Untuk makalah ini, saya mengambil data dari penelitian doktoral saya di Ecole des Hautes Etudes en Sciences Sociales (EHESS), Perancis yang saya selesaikan pada tahun 2015. Untuk keperluan makalah ini, saya hanya menggunakan sepuluh pertanyaan yang sangat erat kaitannya dengan agama dan masalah keluarga.
Berat Badan Lahir Rendah sebagai Faktor Risiko Stunted pada Anak Usia Sekolah
Authors: Fakhrina Aulia , Nurani Neti , Triasih Rina
Published: June 2020

Latar belakang. Stunted pada usia sekolah menyebabkan kemampuan kognitif rendah, fungsi fisik tidak optimal, dan produktivitas masa depan yang rendah.Tujuan. Mengidentifikasi apakah berat badan lahir rendah (BBLR) merupakan faktor risiko stunted pada anak usia sekolah. Metode. Kami melakukan penelitian kasus-kontrol dari bulan Mei – Desember 2016 yang melibatkan siswa sekolah dasar berusia 6-7 tahun yang dipilih secara cluster random sampling di lima kabupaten di Daerah Istimewa Yogyakarta. Stunted didefinisikan sebagai nilai Z score untuk tinggi badan menurut usia <-2 standar deviasi berdasarkan kriteria WHO 2005. Data klinis dan demografi diperoleh menggunakan kuesioner yang diisi oleh orang tua. Hasil. Kejadian stunted adalah 11,8%. Riwayat BBLR (adjusted Odd Ratio (aOR) 3,38; IK 95% 2,03 -5,63), jenis kelamin laki-laki (aOR 1,62; IK 95% 1,160-2,27), usia kehamilan kurang bulan (aOR 4,23; IK 95% 2,18-8,24), pola pemberian MPASI dini (aOR 1,65; IK 95% 1,11-2,45) dan tinggal di daerah pedesaan (aOR 1,68; IK 95% 1,01-2,62) merupakan faktor risiko terjadinya stunted pada usia sekolah. Stunted pada usia sekolah tidak berhubungan dengan pemberian ASI eksklusif dan tingkat pendidikan orang tua.Kesimpulan. Anak-anak yang lahir dengan BBLR berisiko mengalami stunted pada masa sekolah.
Improved Crop Classification with Rotation Knowledge using Sentinel-1 and -2 Time Series
Authors: Giordano Sébastien , Bailly Simon , Landrieu Loic , Chehata Nesrine
Published: June 2020

Leveraging the recent availability of accurate, frequent, and multimodal (radar and optical) Sentinel-1 and -2 acquisitions, this paper investigates the automation of land parcel identi- fication system (LPIS ) crop type classification. Our approach allows for the automatic integration
of temporal knowledge, i.e., crop rotations using existing parcel-based land cover databases and multi-modal Sentinel-1 and -2 time series. The temporal evolution of crop types was modeled with a linear- chain conditional random field, trained with time series of multi-modal (radar and optical)
satellite acquisitions and associated LPIS. Our model was tested on two study areas in France (≥ 1250 km2) which show different crop types, various parcel sizes, and agricultural practices: . the Seine et Marne and the Alpes de Haute-Provence classified accordingly to
a fine national 25-class nomenclature. We first trained a Random Forest classifier without temporal structure to achieve 89.0% overall accuracy in Seine et Marne (10 classes) and 73% in Alpes de Haute-Provence (14 classes). We then demonstrated experimentally that taking into account the temporal
structure of crop rotation with our model resulted in an increase of 3% to +5% in accuracy. This increase was especially important (+12%) for classes which were poorly classified without using the temporal structure. A stark posi- tive impact was also demonstrated on permanent crops, while
it was fairly limited or even detrimental for annual crops.
Pastagens degradadas, uma herança dos imóveis rurais desapropriados para os assentamentos rurais do Cerrado goiano
Authors: Gosch Marcelo Scolari , Parente Leandro Leal , Ferreira Nilson Clementino , Oliveira Adriano Rodrigues de Oliveira , FERREIRA Laerte Guimarães
Published: June 2020

O presente artigo está pautado em dois objetivos: I) verificar a predominância de pastagens degradadas nos imóveis rurais desapropriados por meio da política de reforma agrária no estado de Goiás; e II) avaliar o potencial dos dados satelitários quanto a determinação das condições produtivas da terra. Assim, o estudo apresenta uma comparação entre diferentes métodos de avaliação de pastagens. De um lado, as avaliações realizadas pelo governo federal através de inspeção visual em campo, e de outro, avaliações apoiadas em estudos científicos sobre degradação de pastagens, utilizando técnicas de sensoriamento remoto e imagens de satélite Landsat-5, obtidas a partir da plataforma do Google Earth Engine. Os resultados demonstraram que ¾ das pastagens presentes nos imóveis que deram origem aos assentamentos rurais, tinham algum grau de degradação, revelando que os assentados, muitas vezes, herdam passivos ambientais. Os resultados demonstraram ainda, que o uso de técnicas de sensoriamento remoto e as adaptações metodológicas realizadas foram capazes de retratar a realidade em campo e que futuras avaliações de imóveis rurais realizadas pelo governo poderiam incorporar, mesmo que parcialmente, os métodos aqui apresentados.
SPECIALIZED DESIGN OF ARCHITECTURAL OBJECTS FOR THE REHABILITATION OF PEOPLE WITH VISUAL DISABILITIES
Authors: Villacis Tapia Enrique , Rodriguez Maria Lorena , Jarrin Daniela , Vizcaino Javier , Ayarza Cynthia
Published: June 2020

In the city of Quito, the number of people with disabilities is high and approximately 12% are visually impaired. Centers dedicated to the rehabilitation are available, one of which is the Atahualpa Day Center (CDA). Although the center has trained personnel, and a set program, the facility was not designed for this purpose, it is an adapted space that tries to cover the needs of the staff and the participants generating gaps which have had to be solved in an improvised manner. The Con Lo Que Hay-With what is available-11 (CLQH 11) workshop, identified several spatial needs of the CDA and utilizing a specialized space-object sought to solve the necessity of the step by step methodology process to enable visually impaired individuals into daily life. This means that the skills developed within a controlled space are put into practice in spaces like the city allowing them to acquire the confidence to function autonomously. This study evaluates the pertinence and importance of a space-object specifically designed to help the visually impaired population to reintegrate into daily life. This topic is important within the Ecuadorian context because all the efforts and investments usually are focused on generic buildings and basic services.
COMBINED EFFECT OF WIND SPEED AND COVERING IRRIGATION CANALS ON WATER QUALITY PARAMETERS
Authors: El Baradei Sherine Ahmed , Alsadeq Mai
Published: June 2020

Wind has a considerable effect on many water quality parameters. Some of the parameters are directly affected by the wind, while others are influenced by other physical water parameters like the velocity, temperature. etc. that are affected by wind and hence transfer their effect to water quality parameters. As the wind has an effect on water quality parameters, also covering waterways has a great effect on the water quality of those covered waterways. This is because covering a waterway alters the concentrations of its water quality parameters. This research is concerned with studying the combined effect of wind and covering of canals on different water quality parameters. The main Sheikh Zayed canal of the New Valley project in Toshka governorate in Egypt is taken as case study. Water quality parameters studied are dissolved oxygen concentration (DO) and total dissolved solids (TDS). Mathematical model was developed in order to carry on the simulation. After simulating the effect of wind and covering on these two water quality parameters it was found that the studied water quality parameters concentrations increased as the wind is gradually increased. Thus, TDS and DO showed maximum increase with increased wind speed and with uncovered canal area. TDS showed the max increase; namely 16%.
VIBRATION-BASED STRUCTURAL DAMAGE DETECTION TECHNIQUES: A REVIEW
Authors: Akpabot Akpabot , Ede Anthony , Olofinnade Oluwarotimi , Odetoyan Abimbola
Published: June 2020

Damage in infrastructure can be as a result of its degenerating state under service loads or after exposure to impact loads such as earthquakes. Early damage detection is essential to preventing failure and ensure the integrity and safety of structures. Damages lead to changes in the geometric and material properties like mass, stiffness, and damping, and influences the response behavior of the structure. It has been proven that vibration-based damage detection technique is an efficient means of damage identification and assessing structural integrity. This review article examines conventional vibration-based damage detection techniques. It highlights the importance of early damage detection as a means of ensuring infrastructural safety, reliability and maintenance. Damage detection techniques like the time domain methods, frequency domain and modal domain methods have been developed and constantly evolving to meet the existing challenge of identifying structural damages. The practical application is still minimal, hence more research works are necessary for damage detection in large civil engineering structures.
PHASE CHANGE MATERIALS RANKING BY USING THE ANALYTIC HIERARCHY PROCESS
Authors: Nadeem Abid , Rakhman Kaisar , Hossain Md Aslam
Published: June 2020

Many phase change materials (PCMs) are available with building envelope use potential. PCM in a building envelope stores heat under warm climate as it changes from solid to liquid phase at the melting temperature. Mainly, the latent heat of fusion is stored, which reduces the daily heat flux from the outdoors into the building. Thus, the indoor cooling requirement is reduced. When the outdoor temperature falls, PCM releases the stored heat into the atmosphere over the phase change from liquid to solid that may offset the internal heating needs depending on the design of the PCM application. The PCMs exhibit a great variety in their properties. While many researchers are optimizing the use of PCM for a building application under specific climates, most of them focus on the energy-saving potential of PCMs. Other criteria, such as economic feasibility, environmental hazards, stability, fire resistance, and non-thermal physical properties, should also be considered. Therefore, with many criteria to consider, a sound selection method is necessary for choosing a suitable alternative PCM in an application. Some phase change materials were examined and ranked by taking into consideration their thermal and non-thermal properties. These properties were assessed using a multi-criteria decision-making tool called the Analytic Hierarchy Process (AHP). The results of this paper illustrate a pathway for selecting suitable PCMs and provide support to PCM application in building envelopes.
LIGHTWEIGHT COATING MORTARS FOR BUILDINGS RESTORATION
Authors: Pokorný Jaroslav , Zemanová Lucie , Pavlíková Milena , Pavlík Zbyšek
Published: June 2020

In this paper, crushed lava-based aggregate was used in mortar mix composition as a full silica sand substitution to improve thermal properties of mortar fulfilling also other physical, mechanical and technical requirements. As a binder, natural hydraulic lime was used. Workability of fresh mortar mixes was characterized by spread diameter. The casted samples were matured for 28 days in a high relative humidity to avoid cracking. For the hardened samples, structural, mechanical, and hygric properties were tested. Thermo-physical properties of the developed mortars were measured as function of moisture content, from the dry to fully water saturated state. The application of lava-based aggregate led to the mortar’s increased porosity, improved mechanical strength, lower water absorption, and significantly better thermal performance compared to the control materials with silica aggregate. The newly developed lightweight mortar met the technical, compatibility and functional criteria on rendering mortar and was found well usable for conservation and restoration of historical and heritage masonry and buildings.
INVESTIGATION OF USING WASTE GLASS POWDER AS A SUPPLEMENTARY CEMENTITIOUS MATERIAL IN REACTIVE POWDER CONCRETE
Authors: Hasan Shatha , Nayyef Doaa
Published: June 2020

Some mechanical behaviors were tested by investigations of compressive strength, and direct tensile, strength of reactive Powder concrete (RPC) containing recycled glass powder (RGP) as a supplementary, cementitious material. This study goals to survey the pozzolanic activity of recycled glass powder (RGP) up to (30%) silica fume replacement and its effect on the properties of recycled reactive powder concrete (RRPC) that made by waste glass (WG) and recycled fine concrete aggregate, which has not been investigated before. These properties contain compressive strength and direct tensile strength. Glass is principally composed of silica so that when waste glass is grind to micro particle size in RPC as a partial replacement of silica fume could be a substantial step to development of sustainable material. In this study, high strength reactive powder concrete (HSRPC) with mean compressive strength of 118.4 MPa at 28 days slightly decreased when 40% recycled fine concrete aggregate were used then the strength evolve afterward when 20% of waste glass powder WGP was utilized. The strength tests outcomes indicated that waste glass powder gave greater strength compared to ordinary reactive powder concrete.
Evolución del repertorio didáctico durante la formación inicial del profesorado en Letras
Authors: Maldonado Marcos
Published: June 2020

Nos proponemos en este artículo abordar la problemática de la evolución del repertorio didáctico (Cicurel, 2016) durante las prácticas de enseñanza en la formación inicial del profesorado en lengua. Mediante el estudio de caso (Stake, 1999), interpretamos las trazas discursivas del proceso de enseñanza/aprendizaje que se encuentran en los guiones conjeturales y en los autorregistros, dispositivos de formación, de una estudiante del profesorado en Letras de la Universidad de Buenos Aires, Argentina. Nuestros datos de análisis son documentos escritos recolectados del Campus Virtual de la Cátedra Didáctica Especial y Prácticas de la Enseñanza. Debido a la naturaleza discursiva y dialógica de los datos, muestra metodología se construye desde el análisis interpretativo hermenéutico del discurso en interacción y del discurso de la acción. Mediante la alternancia de posturas inductivas y deductivas intentamos obtener indicios que nos permitan dar respuesta a nuestra problemática de interés: por qué y cómo evoluciona el repertorio didáctico de los estudiantes en formación durante la realización de sus prácticas profesionales. Los resultados del análisis de las interacciones verbales entre la formadora y la practicante nos demuestran que la utilización de determinados gestos discursivos permite crear situaciones significativas que potencializan el aprendizaje y producen una movilización cognitiva que motiva la evolución del repertorio didáctico.
Anomalous Origin of Left Coronary Artery with Intramural Aortic Course Causing Symptoms in a Teenaged Athlete
Authors: Garcia-Arribas Daniel , Olmos Carmen , Higueras Javier , Marcos-Alberca Pedro , de la Pedraja Iñigo , Garcia-Bouza Monica
Published: June 2020

Anomalous origin of the left coronary artery from the opposite sinus of Valsalva with an intramural aortic course is a rare congenital anomaly with a poor prognosis. We report the case of a 14-year-old soccer player who briefly lost consciousness while sprinting. He had exertional chest pain, syncope, ischemic changes on his electrocardiogram, and elevated cardiac troponin levels. Computed tomographic angiograms showed an anomalous origin of the left coronary artery from the right sinus of Valsalva and a course through the aortic wall toward the left coronary sinus. A surgically created neo-ostium in the left coronary sinus relieved the patient's ischemia, and he resumed playing soccer after cardiac rehabilitation.
Robotic-Assisted Percutaneous Coronary Intervention Through Transradial Approach: Experience in 4 Patients with Complex Lesions
Authors: Anuwatworn Amornpol , Ali Kahn Muhammad , Stys Tomasz , Petrasko Marian , Stys Adam
Published: June 2020

Robotic-assisted percutaneous coronary intervention can reduce the exposure of interventional cardiologists to radiation and minimize the risk of occupational orthopedic injuries from wearing heavy protective aprons. The PRECISE (Percutaneous Robotically-Enhanced Coronary Intervention) study showed the efficacy and safety of robotic-assisted procedures for relatively low-risk lesions in single coronary arteries. Several reports have described robotic-assisted treatment of complex high-risk lesions, mostly through the transfemoral approach. We report 4 cases of patients in whom we used the transradial approach to treat complex lesions in the left anterior descending coronary artery with bifurcation balloon angioplasty reconstruction (2 cases), in the ostium of the first diagonal branch, and in the right coronary artery.
Endovascular Repair of a Pseudoaneurysm After Multiple Open Repairs of Aortic Coarctation
Authors: Alnasser Saleh A. , Vunnamadala Kalyan C. , Preventza Ourania A. , Coselli Joseph S. , de la Cruz Kim I.
Published: June 2020

Successful surgical repair of aortic coarctation during childhood may have major late complications such as pseudoaneurysm formation. If left untreated, pseudoaneuryms put patients at risk for morbidity and death; if treated surgically, they are associated with complications. Endovascular aortic repair, an established safe alternative to open surgical repair, is associated with encouraging outcomes and fewer complications, and it is especially feasible for patients who have undergone multiple aortic surgeries. We report the case of a 41-year-old man who underwent endovascular repair of a pseudoaneurysm after previous surgical corrections of an aortic coarctation at 6 and 14 years of age. The pseudoaneurysm, involving the distal portion of an ascending-to-descending aortic 20-mm Dacron bypass graft, was successfully excluded with a thoracic stent-graft and sealed off with vascular plugs to prevent both blood flow into the pseudoaneurysm and type II endoleak.
Modified Danielson Technique for Prosthetic Aortic Valve Endocarditis and Aortoventricular Discontinuity
Authors: Filippone Gianfranco , Calia Claudia , Finazzo Mario , Fazzari Fabio , Caruana Giovanni , Argano Vincenzo
Published: June 2020

Endocarditis is a devastating complication of prosthetic aortic valve replacement. The infective process can destroy aortic annulus tissue, making conventional surgical valve replacement difficult or impossible and causing aortoventricular discontinuity. Several treatment techniques have been proposed. One of these, the Danielson technique, involves translocating the aortic valve to the native ascending aorta, débriding the abscess cavity, closing the coronary ostia, and bypassing the coronary arteries with a Y anastomosis between 2 vein grafts. We describe our use of a modified Danielson technique in a 68-year-old man with advanced prosthetic valve endocarditis that was associated with aortic annulus destruction and aortoventricular discontinuity. This modified technique enables safer, more secure anchoring of a replacement valve, reduces the risks and concerns associated with bypass grafts, and successfully treats aortoventricular discontinuity.
Triple-Guidewire Technique for Treating Stent Underexpansion in Severely Calcified Coronary Artery Lesions
Authors: Gedela Maheedhar , Li Shenjing , Desai Chirag , Stys Tomasz , Stys Adam
Published: June 2020

Stent underexpansion, a potential complication of percutaneous coronary intervention in severely calcified and stenotic coronary arteries, may result in in-stent thrombosis and restenosis. Different balloon-based and atheroablative techniques have been proposed to reduce the risk of these complications. We describe a simple triple-guidewire technique that we used to treat stent underexpansion in 2 elderly men.
Percutaneous Closure of Paravalvular Leak from a Rocking Mitral Valve in a 74-Year-Old Man at High Surgical Risk
Authors: Corrigan III Frank E. , Iturbe Jose Miguel , Lerakis Stamatios , Kamioka Norihiko , Babaliaros Vasilis C. , Clements Stephen D.
Published: June 2020

Dehiscence of a prosthetic heart valve or excessive rocking during the cardiac cycle is thought to preclude percutaneous paravalvular leak closure. However, surgical repair of paravalvular leak is associated with recurrent dehiscence and poor outcomes. We present the case of a symptomatic 74-year-old man in whom we performed percutaneous anchoring, involving multiple plugs and multimodal imaging, to stabilize a rocking mitral valve and close a substantial paravalvular leak caused by dehiscence. To our knowledge, using this technique to correct both conditions is novel.
Chronic Inferior Vena Cava Filter Thrombosis: Endovascular Treatment and One-Year Follow-Up with Intravascular Ultrasonography
Authors: Mesa Andrés , Milazzo Eliana , Rivera Oscar , Hernández Tabata , Umanzor Gilberto
Published: June 2020

Inferior vena cava (IVC) filter thrombosis can be fatal when it is not detected and treated. Its management can be challenging, because little evidence supports specific treatments. We present the case of a 72-year-old man with a history of deep vein thrombosis in whom IVC filter thrombosis developed 7 years after filter placement. Recanalization with oral anticoagulation had failed. Using intravascular ultrasonography, we performed pharmacomechanical thrombolysis, deploying 2 stents simultaneously through the IVC filter and then 2 more into the iliac veins, with excellent results. One year later, the patient's veins and IVC filter were patent, his symptoms were greatly improved, and only nonobstructive neointimal hyperplasia was seen. This case highlights the usefulness of balloon venoplasty and double-barrel stent placement in restoring blood flow through an occluded IVC, and the value of intravascular ultrasonography during and after such procedures.
ANALISIS CURAH HUJAN BULANAN DI KOTA AMBON MENGGUNAKAN MODEL HETEROSKEDASTISITAS: SARIMA-GARCH
Authors: Sinay Lexy Janzen , Lembang Ferry Kondo , Aulele Salmon Notje , Mustamu Dominique
Published: June 2020

Non-linear characteritics in rainfall allow volatility clustering. This condition occurs in Ambon City with seasonal rainfall patterns. The aims of this research are to find the best model and to forecast monthly rainfall in Ambon City using heteroscedasticity model. This research examines secondary data from BMKG for monthly rainfall data in Ambon City from January 2005 – December 2018. The data is divided into two parts. First part, is called in-sample data, consist of data form January 2005 – December 2017. Second part, is called out-sample data, consist data from Januari 2018 – December 2018. The research used SARIMA–GARCH to model the data. The results are the  is the best model and the residual model satisfied assumptions of normality, white noise, and there is no ARCH effect. The MAPE value in simulation using in-sample data is 0.73%. On the other side, the MAPE value of forecast results is 30%.