bluuebunny/crossref_metadata_2025 huggingface dataset:
5.7-dB Fiber-to-Fiber Loss 8 × 8 Silicon Photonics Switch with Port-Alternated Switch-and-Select Architecture
Authors: Konoike Ryotaro , Suzuki Keijiro , Kawashima Hitoshi , Ikeda Kazuhiro
Published: March 2020

We propose and demonstrate a Port-Alternated Switch-and-Select architecture that has both low insertion loss and low path dependency. Using silicon photonics platform, we realized an 8 × 8 switch with 5.7-dB Fiber-to-Fiber insertion loss.
Distortion-suppressed sampling rate enhancement in phase-OTDR vibration sensing with newly designed FDM pulse sequence for correctly monitoring various waveforms
Authors: Wakisaka Yoshifumi , Iida Daisuke , Oshida Hiroyuki
Published: March 2020

The FDM-based sampling rate enhancement method proposed herein detects vibration waveforms more accurately than previous methods while reducing phase unwrapping failures; it can measure vibrations with larger amplitude and higher frequency than heretofore.
Sensors Based on Dual Supermode Interferometers
Authors: Villatoro Joel , Antonio-Lopez Enrique , Schülzgen Axel , Amezcua-Correa Roddrigo
Published: March 2020

Compact interferometers composed by two slightly different segments of asymmetric multicore fiber fusion spliced and rotated 180º with respect to each other are proposed for sensing applications. Examples and advantages of such interferometers are discussed.
High-Durability Coating for Improved Thermal Management of Pluggable Optical Modules
Authors: Chesterfield R. , Goli P. , Querelle-Halverson S. , Sullivan E. , Hoyt Z. , Olson K. , Bren M. , Aranyosi A. , Doan S. , Le V.
Published: March 2020

We introduce a new high-durability thermal interface coating designed to improve pluggable optical module to heat sink thermal transfer. Performance data and test methods for thermal resistance, durability, and long-term reliability are presented.
Bus-Type Optical Access Using DRA and Asymmetric Power Splitters for Accommodating Rural Users
Authors: Igarashi Ryo , Fujiwara Masamichi , Kanai Takuya , Hara Kazutaka , Kawakita Atsuko , Suzuki Hiro , Kani Jun-ichi , Terada Jun
Published: March 2020

We propose a long-reach bus-type optical access system by using distributed Raman amplification and asymmetric power splitters. The feasibility is experimentally verified by using 10G-EPON and its scale is estimated by bit error rate measurements.
Deep Learning Imaging through Specialty Multi-mode Fibers
Authors: Zhao Jian , Fan Shengli , Antonio-Lopez Jose Enrique , Schülzgen Axel
Published: March 2020

We demonstrate a cost-effective, highly accurate, and fast-speed cell sensing system enabled by the combination of the disordered optical fiber and the deep-learning classifier. It is compatible with both coherent and incoherent illumination.
Low-Power Data Center Transponders Enabled by Micrometer-scale Plasmonic Modulators
Authors: Baeuerle Benedikt , Heni Wolfgang , Hoessbacher Claudia , Fedoryshyn Yuriy , Josten Arne , Koch Ueli , Haffner Christian , Watanabe Tatsuhiko , Uhl Christopher , Hettrich Horst , Elder Delwin L. , Dalton Larry R. , Möller Michael , Leuthold Juerg
Published: March 2020

Plasmonic modulators allow for high-speed data modulation beyond 200GBd at the micrometer-scale and low driving voltages below 700mV. The compact footprint enables dense integration and makes plasmonic modulators a promising solution for next-generation optical interconnects.
4×56-GBaud PAM-4 SDM Transmission Over 5.9-km 125-μm-Cladding MCF Using III-V-on-Si DMLs
Authors: Diamantopoulos Nikolaos-Panteleimon (Pandelis) , Nishi Hidetaka , Fujii Takuro , Shikama Kota , Matsui Takashi , Takeda Koji , Kakitsuka Takaaki , Nakajima Kazuhide , Matsuo Shinji
Published: March 2020

We demonstrate 4×56-GBaud PAM-4 signals over 125-μm-cladding, 4-core fiber by simultaneous, direct modulation of four 1.3-μm membrane III-V-on-silicon lasers, each requiring <25-mWatts (@12 mA). A reach extension of ~15x is achieved compared to previous works.
1.12 Tbit/s fiber vector eigenmode multiplexing transmission over 5-km FMF with Kramers-Kronig receiver
Authors: Zhang Jianbo , Wu Xiong , Lu Linyue , Li Jianping , Tu Jiajing , Li Zhaohui , Lu Chao
Published: March 2020

We demonstrate a 1.12 Tb/s MIMO-free vector eigenmode multiplexed signal transmission over 5-km 4-mode few-mode-fiber using 2 vector modes (HE11 and EH11), 5 wavelengths and 28 GBaud 16-QAM signal with direct-detection Kramers-Kronig receiver.
Advancing classical and quantum communication systems with machine learning
Authors: Zibar D. , Moura U. C. , Chin H. M. , Rosa Brusin A. M. , Jain N. , Da Ros F. , Kleis S. , Schaeffer C. , Gehring T. , Andersen U. L. , Carena A.
Published: March 2020

A perspective on how machine learning can aid the next–generation of classical and quantum optical communication systems is given. We focus on the design of Raman amplifiers and phase tracking at the quantum limit.
Experimental Prediction and Design of Ultra-Wideband Raman Amplifiers Using Neural Networks
Authors: Ye Xiaoyan , Arnould Aymeric , Ghazisaeidi Amirhossein , Le Gac Dylan , Renaudier Jeremie
Published: March 2020

A machine learning method for Raman gain prediction and multi-pump broadband amplifier design is experimentally demonstrated over a 100 nm-wide optical bandwidth. We show high accuracy and ultra-fast prediction of arbitrary gain profile over a 100 km-long SSMF span.
Lossless Monolithically Integrated Photonic InP Neuron for All-Optical Computation
Authors: Shi Bin , Prifti Kristif , Magalhães Eduardo , Calabretta Nicola , Stabile Ripalta
Published: March 2020

We demonstrate a monolithically integrated SOA-based photonic neuron, including both the weighted addition and a wavelength converter with tunable laser as nonlinear function, allowing for lossless computation of 8 Giga operation/s with an 89% accuracy.
Nonlinear Pre-Distortion Based on Indirect Learning Architecture and Cross-Correlation-Enabled Behavioral Modeling for 120-Gbps Multimode Optical Interconnects
Authors: Liang Chenyu , Zhang Wenjia , Ge Ling , Du Jiangbing , He Zuyuan
Published: March 2020

In this paper, we present a novel nonlinear pre-distortion scheme enabled by indirect learning architecture and cross-correlation based behavioral modeling. 120-Gbps PAM-4 error free transmission is demonstrated using 30-GHz class VCSEL.
Delivery of 138.88Gpbs Signal in a RoF Network with real-time processing based on heterodyne detection
Authors: Wang Can , Li Xinying , Zhao Mingming , Wang Kaihui , Zhang Jiao , Kong Miao , Zhou Wen , Xiao Jiangnan , Yu Jianjun
Published: March 2020

We experimentally demonstrate 138.88-Gb/s PDM-QPSK signal delivery in a RoF network based on real-time processing based on heterodyne coherent detection, and error-free delivery can be realized if SD-FEC with 27% overhead is enabled.
Artificial Neural Network-Based Compensation for Transceiver Nonlinearity in Probabilistic Shaping Systems
Authors: Nguyen Tu T. , Zhang Tingting , Abu-Romoh Mahmood , Ellis Andrew
Published: March 2020

Artificial neural network for transceiver nonlinearity compensation in dual-polarization probabilistically shaped 28 GBaud systems is experimentally investigated with achieved SNR performance gain up to 1 dB.
Experimental Demonstration of C-band 112-Gb/s PAM4 over 20-km SSMF with Joint Pre- and Post-equalization
Authors: Tang Xizi , Qiao Yaojun , Chang Gee-kung
Published: March 2020

We demonstrate C-band 112-Gb/s PAM4 over 20-km transmission with pre- and post-equalization. Pre-filter coarsely pre-compensates system bandwidth at transmitter while FFE-DFE with erasure technology jointly post-compensates residual bandwidth limitation and dispersion-induced power fading at receiver.
Stochastic EXIT Design for Low-Latency Short-Block LDPC Codes
Authors: Koike-Akino Toshiaki , Millar David S. , Kojima Keisuke , Parsons Kieran
Published: March 2020

We introduce a stochastic version of extrinsic information transfer (EXIT) chart which accounts for dispersion in finite-length LDPC decoding. The proposed approach can design short LDPC codes systematically, achieving about 1.2 dB gain over recently proposed scattered EXIT design.
Deployment Opportunities for DPS-QKD in the Co-Existence Regime of Lit GPON / NG-PON2 Access Networks
Authors: Vokić Nemanja , Milovančev Dinka , Schrenk Bernhard , Hentschel Michael , Hübel Hannes
Published: March 2020

We demonstrate cost-effective QKD integration for GPON and NG-PON2. Operation at 5.1×10−7 secure bits/pulse and a QBER of 3.28% is accomplished for a 13.5-km reach, 2:16-split PON, with 0.52% co-existence penalty for 19 classical channels.
Hardware Architecture and Algorithm Co-design for Multi-Layer Photonic Neuromorphic Network with Excitable VCSELs-SA
Authors: Xiang Shuiying , Ren Zhenxing , Zhang Yahui , Guo Xingxing , Song Ziwei , Wen Aijun , Hao Yue
Published: March 2020

We design a multi-layer photonic spiking neural network with excitable VCSELs-SA. Numerical results based on the rate-equation models show that the proposed neuromorphic network architecture is capable of solving the classical XOR problem by supervised-learning.
Architecting Cloud-native Optical Network with Whitebox Equipment
Authors: Nishizawa Hideki
Published: March 2020

A flexible and open mean of implementing an optical network by using whitebox equipment with the Transponder Abstraction Interface is proposed. Examples of automation and monitoring device/performance information using an open transport platform are described.
Demodulation of Eigenvalue Modulated Signal Based on Eigenvalue-Domain Neural Network
Authors: Mishina Ken , Sato Shingo , Yamamoto Shohei , Yoshida Yuki , Hisano Daisuke , Maruta Akihiro
Published: March 2020

A demodulation scheme for an eigenvalue modulated signal based on an eigenvalue-domain neural network is demonstrated experimentally. Successful demodulation is demonstrated at 2.5 Gb/s over a transmission distance of up to 3,000 km.
150nm SCL-Band Transmission through 70km SMF using Ultra-wideband Dual-stage Discrete Raman Amplifier
Authors: Iqbal Md Asif , Krzczanowicz Lukasz , Phillips Ian , Harper Paul , Forysiak Wladek
Published: March 2020

We experimentally demonstrate a dual-stage 150nm discrete Raman amplifier with 15dB gain and maximum ~8dB noise figure enabling SCL-band (1475-1625nm) WDM transmission through a 70km SMF using 30GBaud PM-QPSK signals with low transmission penalties.
Terabit Transmitters Using Heterogeneous III-V/Si Photonic Integrated Circuits
Authors: Bowers John E. , Chang Lin , Huang Duanni , Malik Aditya , Netherton Andy , Tran Minh , Xie Weiqiang , Xiang Chao
Published: March 2020

Heterogeneous photonic integrated circuits are being demonstrated with Tbps capacity and higher performance, with laser linewidths below 1 kHz and volumes scaled to multimillion per annum production levels.
Comparison of Erbium, Raman and Parametric Optical Fiber Amplifiers for Burst Traffic in Extended PON
Authors: Gaur Chandra B , Ferreira Filipe , Gordeinko Vladimir , Iqbal Asif , Forysiak Wladek , Doran Nick
Published: March 2020

Experimental comparison of burst traffic amplification by: a polarization independent fiber optic parametric amplifier, a discrete Raman fiber amplifier and an erbium-doped fiber amplifier. Parametric amplification improves required received power by more than 3dB.
Differential Modal Gain Reduction using a Void Inscribed in a Two-Mode-Erbium Doped Fiber
Authors: Yamashita Yoko , Matsui Takashi , Wada Masaki , Aozasa Shinichi , Sakamoto Taiji , Nakajima Kazuhide
Published: March 2020

Differential modal gain (DMG) reduction technique that uses laser-inscribed void is proposed. We reveal that DMG can be successfully controlled by introducing one void into two-mode-EDF while keeping the initial gain, NF and flatness.
Ultra-Compact and Broadband Silicon Two-Mode Multiplexer based on Asymmetric Shallow Etching on a Multi-Mode Interferometer
Authors: Wang Zhen , Yao Chunhui , Zhang Yong , Su Yikai
Published: March 2020

We present a silicon two-mode multiplexer with a footprint of 1.5×7.24 μm2. The operation principle is based on simultaneous multi-mode conversion. In the wavelength range of 1521nm~1571nm, the crosstalk is below –15 dB.
Effects of Reflow Soldering Process Conditions on the Reliability of Specialty Optical Fibers
Authors: Wen Mei , Lago Ralph J. , Li Jie
Published: March 2020

We will review the reliability of specialty optical fibers for high temperature uses with an emphasis on fibers through reflow soldering process conditions. Coating thermal stability, fiber mechanical properties, and induced optical loss will be discussed.
Uni-Traveling Carrier Photodiodes with Type-II GaAs0.5Sb0.5/In0.53Ga0.47As Hybrid Absorbers Integrated with Substrate Lens in 400 Gbit/sec DR-4 System
Authors: Nassem  , Chang Hsiang-Szu , Chao Rui-Lin , Huang Jack Jia-Sheng , Jan Yu-Heng , Chen H.-S. , Ni C.-J. , Chou Emin , Shi Jin-Wei
Published: March 2020

UTC-PD with type-II GaAs0.5Sb0.5/In0.53Ga0.47As hybrid absorber integrated with substrate lens is demonstrated with high responsivity (0.95A/W) and wide O-E bandwidth (33GHz) at 1310 nm wavelength. High-sensitivity (-10dBm OMA) is realized in 400G lens-free DR-4 platform.
64Gbps PAM4 Modulation for a Low Energy Si-Ge Waveguide APD with Distributed Bragg Reflectors
Authors: Huang Zhihong , Wang Binhao , Yuan Yuan , Liang Di , Fiorentino Marco , Beausoleil Raymond G.
Published: March 2020

We demonstrate a low-voltage waveguide Si-Ge APD that integrates a distributed Bragg reflector (DBR). Quantum efficiency has been improved from 60% to 90% at 1550nm while still achieving a 25GHz bandwidth. The device under 64Gbps PAM4 modulation showed 30% increase in OMA, which enables 1.2dB improvement in receiver sensitivity.
Revealing photonic symmetry-protected modes by the finite-difference-time-domain method
Authors: Hoblos Ayman , Suarez Miguel , Guichardaz Blandine , Courjal Nadége , Bernal Maria-Pilar , Issam Baida Fadi
Published: March 2020

This Letter is devoted to pointing out a specific feature of the finite-difference-time-domain (FDTD) method through the study of nano-structures supporting geometrical symmetry-protected modes that cannot be excited at certain conditions of illumination. The spatial discretization performed in the FDTD algorithm naturally leads to breaking this symmetry and allows the excitation of these modes. The quality factors of the corresponding resonances are then directly linked to the degree of symmetry breaking, i.e., the spatial grid dimension, even though the convergence criteria of the FDTD are fulfilled. This finding shows that the FDTD must be handled with great care and, more importantly, that very huge quality-factor resonances can be achieved at the cost of nanometer-scale mastered fabrication processes.
Sobre los modelos encubiertos de antropocentrismo en nuestra relación con el medio orgánico
Authors: Aguirre Martínez Guillermo
Published: March 2020

Resumen: Estas páginas pretenden abordar conceptos relativos a la bioética a partir de la revisión de nuestra concepción de los conceptos de sensibilidad e inteligencia en el reino vegetal, cuestiones ambas que no dejan de comprenderse como umbral en el que queda a un lado un deseo de respeto hacia el medio con el que convivimos y, en el otro, de modo más sutil, un nuevo apropiamiento de carácter antropocéntrico por parte del sujeto.
Environmental conflicts and ecological citizenship: the case of Gualeguaychú and the pulp mills
Authors: Melo Escrihuela Carme
Published: March 2020

This article deals with interactions between citizenship and political ecology by examining the ‘pulp mills conflict’ in Gualeguaychú, Argentina. The conflict burst in 2003 when the Uruguayan authorities announced the construction of a cellulose plant on the shore of the Uruguay River. The citizens of Gualeguaychú, a city right across the border, initiated a movement of protest that soon transcended the local dimension. I argue that this protest was a battle over sovereignty and an environmental conflict between different conceptions of development and diverse views of the use of a common resource, the river. The notion of ecological citizenship formed in this process is assessed by examining how this concept was constructed by local stakeholders and by unveiling the motivations informing citizens’ engagement.
Use of HCV-Positive Livers in HCV-Negative Recipients
Authors: Thuluvath Paul J. , Bruno David A. , Alukal Joseph , Satapathy Sanjaya K. , Thuluvath Avesh J. , Zhang Talan
Published: March 2020

INTRODUCTION:

There are only limited data on the survival outcomes after transplanting HCV RNA–positive liver into HCV RNA–negative recipients. The objective of our study was to determine whether there were graft and patient survival differences when HCV-negative patients received HCV RNA (nucleic acid amplification testing [NAT] positive)–positive liver grafts.

METHODS:

We queried the United Network for Organ Sharing data sets from January 2014 to December 2018, and recipients (N = 24,724) were stratified into 6 groups based on the status of HCV antibody and RNA of recipients and donors. The Cox proportional hazard regression was used to estimate the relationship between groups and 1-year post-LT graft or patient survival.

RESULTS:

During the study period, 1,358 recipients received NAT-positive liver grafts. Two hundred ten of the recipients were HCV negative. During the same period, 707 HCV antibody–positive but NAT-negative grafts were transplanted into 516 HCV-positive and 191 HCV-negative recipients. There were no differences in survival in HCV-positive recipients whether they received NAT-positive grafts (n = 1,148) or HCV antibody–negative/NAT-negative grafts (n = 6,321). Recipients of grafts from HCV antibody–positive/NAT-negative donors had similar survival whether recipients were HCV-negative patients (n = 191) or HCV-positive patients (n = 516), and their survival probabilities were similar to those of HCV-negative recipients (n = 6,321) receiving grafts from HCV antibody–negative/NAT-negative donors. Patient survival was lower (P = 0.049) when HCV-negative recipients (n = 210) received NAT-positive grafts compared with HCV-positive patients (n = 1,148) receiving NAT-positive grafts; however, when adjusted for recipient and donor characteristics, the difference was not significant.

DISCUSSION:

HCV-negative recipients receiving HCV-positive liver grafts (NAT positive) have excellent 1-year survival outcomes.
Theranostic Gastrointestinal Endoscopy: Bringing Healing Light to the Lumen
Authors: Nassani Najib , Alsheikh Mira , Carroll Bobby , Nguyen Diep , Carroll Robert E.
Published: March 2020

Current conventional endoscopes have restricted the accuracy of treatment delivery and monitoring. Over the past decade, there have been major developments in nanotechnology and light triggered therapy, potentially allowing a better detection of challenging lesions and targeted treatment of malignancies in the gastrointestinal tract. Theranostics is a developing form of personalized medicine because it combines diagnosis and targeted treatment delivered in one step using advances in nanotechnology. This review describes the light-triggered therapies (including photodynamic, photothermal, and photoimmunotherapies), nanotechnological advances with nanopowder, nanostent, nanogels, and nanoparticles, enhancements brought to endoscopic ultrasound, in addition to experimental endoscopic techniques, combining both enhanced diagnoses and therapies, including a developed prototype of a “smart” multifunctional endoscope for localized colorectal cancer, near-infrared laser endoscope targeting the gastrointestinal stromal tumors, the concept of endocapsule for obscure gastrointestinal bleed, and a proof-of-concept therapeutic capsule using ultrasound-mediated targeted drug delivery. Hence, the following term has been proposed encompassing these technologies: “Theranostic gastrointestinal endoscopy.” Future efforts for integration of these technologies into clinical practice would be directed toward translational and clinical trials translating into a more personalized and interdisciplinary diagnosis and treatment, shorter procedural time, higher precision, higher cost-effectiveness, and less need for repetitive procedures.
Consumers and the Sources of US Trade Openness
Authors: Betz Timm
Published: March 2020

This essay reviews US trade flows and trade policy from the perspective of consumers. Trade policy shapes the prices and the availability of products sold in the US to, ultimately, voters. Understanding the role of consumers in explaining US trade policy may therefore offer lessons for our understanding of politics beyond trade. International trade has created substantial gains for consumers, both by lowering domestic prices and by increasing access to a wider variety of products. Yet, US trade policy does not appear to reflect consumer interests: tariffs are higher for products with higher consumption shares. This finding is inconsistent with the narrative that open trade is a response to consumer interests, and it is not explained by standard collective action arguments either. Instead, the political influence of pro-trade firms emerges as a driving force of US trade openness. The essay discusses the implications for our understanding of the political and institutional sources of trade openness. If special interest politics explains the opening of trade, it reverses the traditional interpretation of trade openness as an indication of the absence of special interest politics.
Sedimentary succession and recognition marks of lacustrine gravel beach-bars, a case study from the Qinghai Lake, China
Authors: Peng Biao , Han Jichang , Xie Xiao , Wang Luyao
Published: March 2020

The present is the key to the past. Based on the dissection of modern beach-bars in the Qinghai Lake, Qinghai-Tibet Plateau, China, including two profiles parallelly to the shoreline, two profiles vertically to the shoreline and one plane-view profile, the sedimentary succession and recognition marks of lacustrine gravel beach-bars have been summarized. Vertically, the lacustrine gravel beach-bars develop with the “ABC” succession. The A interval, the B interval, and the C interval respectively correspond with the gravelly sand facies, the well-sorted gravel facies, and the graded sand facies. The lacustrine gravel beach-bars is composed of several combinations of the “ABC” succession, such as “ABAB”, “ABCABC”, “BCBC”. The main recognition marks of lacustrine gravel beach-bars is the following: the bottom contact is distinct and with the “ABC” succession; and the lacustrine beach-bars develop the swash bedding and sheet-like parallelly to the lakeshore. These viewpoints have significant contributions to the reconstruction of paleoenvironments and paleoshorelines and to the reservoir interpretation within lacustrine beach-bar clastic bodies.
Reevaluating the German labor market miracle
Authors: Burda Michael C. , Seele Stefanie
Published: March 2020

From 2003 to 2018, employment in Germany increased by 7.3 million, or by 19.3 % – growth not observed since unification. This “labor market miracle” was marked by a persistent and significant expansion of both part-time and low-wage jobs and a deterioration in pay for these jobs, while total hours hardly increased; overall wage growth returned only after 2011. These developments followed in the wake of the landmark Hartz reforms (2003–2005). A modified framework of Katz and Murphy (1992) predicts negative correlation of wages with both relative employment and participation across cells in the period following these reforms. In contrast, wage moderation alone should generate positive association of wages and participation. Our findings are most consistent with a persistent, positive labor supply shock at given working-age population in a cleared labor market. An alternative perspective of labor markets, the search and matching model, also points to the Hartz IV reforms as the central driver of the German labor market miracle.
Numerical Solutions Based on a Collocation Method Combined with Euler Polynomials for Linear Fractional Differential Equations with Delay
Authors: Konuralp Ali , Öner Sercan
Published: March 2020

In this study, a method combined with both Euler polynomials and the collocation method is proposed for solving linear fractional differential equations with delay. The proposed method yields an approximate series solution expressed in the truncated series form in which terms are constituted of unknown coefficients that are to be determined according to Euler polynomials. The matrix method developed for the linear fractional differential equations is improved to the case of having delay terms. Furthermore, while putting the effect of conditions into the algebraic system written in the augmented form in which the coefficients of Euler polynomials are unknowns, the condition matrix scans the rows one by one. Thus, by using our program written in Mathematica there can be obtained more than one semi-analytic solutions that approach to exact solutions. Some numerical examples are given to demonstrate the efficiency of the proposed method.
La religion est-elle « purement une affaire de raison » ?
Authors: Theis Robert
Published: March 2020

This study reflects upon the fundamental justification of the radicality of Kant’s affirmation according to which religion is “a matter of reason alone”.

To this end, this paper bores in two directions: In a first direction, the premises as well as the context of the Critique of Practical Reason’s thesis, according to which the moral law leads to religion, are reconstructed. The question that needs to be clarified in this context concerns the semantic content of the concept of religion that is introduced here in Kant’s argumentation. That question’s resolution will help to show the sense in which religion is not merely a matter of reason alone.

In a second direction, further inquiries are made regarding Religion within the Limits of Reason Alone on the ‘plural relation’ between two discourses that originate in different sources – reason and revelation. This shows the sense in which revealed religion enriches reason’s discourse.

In that respect, the complexity of the Kantian arguments does not allow us to maintain outright the thesis that religion is a matter of reason alone.
QTc interval predicts disturbed circadian blood pressure variation
Authors: Yan Liyuan , Jin Jianling , Jiang Shili , Zhu Wei , Gao Meiwen , Zhao Xin , Yuan Jiamin
Published: March 2020

Background

The relationship between electrocardiographic evaluation and circadian blood pressure (BP) variation in young and middle-aged hypertensive patients remains unknown.

Methods

A total of 171 hypertensive patients were included in the study. First, patients were divided into a young and middle-aged group and an elderly group. The two groups were then separately classified into three subgroups on the basis of circadian variation of BP as dippers, non-dippers and reverse-dippers. The electrocardiographic evaluation was calculated from 12-lead electrocardiography (ECG).

Results

QTc intervals were shortest in the dippers and longest in the reverse-dippers in the young and middle-aged group (QTc dipper: 416.53±18.37ms; non-dipper: 438.30±29.71ms; reverse-dipper: 444.93±25.47ms; for dipper vs non-dipper, and dipper vs reverse-dipper P<0.05). QTc interval was found to be an independent risk factor for the non-dipper BP pattern (Odds ratio 1.049; 95% CI 1.01-1.089; P=0.012) and reverse-dipper BP pattern (Odds ratio 1.051; 95% CI 1.007-1.098; P=0.023) in young and middle-aged hypertensive patients. No significant differences in other ECG parameters were found among the three subgroups in the young and middle-aged group.

Conclusion

Our study suggested that QTc interval might serve as a risk factor for non-dipper BP pattern and reverse-dipper BP pattern in young and middle-aged hypertensive patients.
Dominant species drive seasonal dynamics of the fish community in the Min estuary, China
Authors: Li Jun , Kang Bin
Published: March 2020

Fishery resources are currently facing multiple stresses such as overfishing, pollution and climate change. Looking into processes and mechanisms of the dynamic fish community through detailed quantitative analyses contributes to effective conservation and management of fishery resources. The Min estuary plays an important role in maintaining fisheries in southeastern coastal China, therefore the fish community in the brackish area was investigated and analyzed in this study. A total of 127 species belonging to 91 genera, 49 families and 14 orders were sampled in 2015. Eight indices reflecting four aspects of fish communities were determined, i.e. species richness, species evenness, heterogeneity and taxonomy. Differences between the indices were nonsignificant, suggesting that the use of a single diversity descriptor could not provide a full explanation. Nine dominant species in the Min estuary showed seasonal turnover by rational use of resources and co-occurring species showed correspondingly adequate habitat preferences and feeding habits to avoid competition. The species Harpadon nehereus occurred as the dominant species in three seasons except spring. High values of niche overlap among common or rare species and lower values of niche overlap among all dominant species effectively brought the diversity of the fish community into a state of equilibrium.
The use of 18S ribosomal DNA, ITS and rbcL molecular markers to study the genus Dunaliella (Dunaliellaceae) in Iranian samples: A phylogenetic approach
Authors: Dehghani Jaber , Atazadeh Ehsan , Omidi Yadollah , Movafeghi Ali
Published: March 2020

The microalga Dunaliella has been the focus of attention over recent decades owing to its high biotechnological potential for the production of β-carotene, biofuels and even as a good expression system for the production of recombinant proteins. Different species of this genus have unique features, biological characteristics and biotechnological potential. Therefore, it is necessary to have a clear and reliable taxonomic method to identify different species of Dunaliella. Although several taxonomic systems are available for Dunaliella based on morphological, physiological and molecular features, none of these methods are reliable enough and some controversies exist over different classification systems. In the current study, molecular techniques and bioinformatics tools have been used to re-assess the phylogenetic position of Dunaliella species based on 18S ribosomal DNA (18S rDNA), ITS and rbcL regions. The overall findings based on these markers provide a new and more reliable tool for phylogenetic analysis of Dunaliella species/strains.
A General Viscous Model for Some Aspects of Tropical Cyclonic Winds
Authors: Pandey Sanjay Kumar , Maurya Jagdish Prasad
Published: March 2020

A previous investigation found that the existence of double exponential terms is a reason for rapid intensification of cyclonic winds with the assumption of a linearised form of viscosity. Here, we consider viscosity of general type and still get similar terms. A perturbation technique is applied to the solution. The domain of analysis is split into two regions: an inner one that experiences updraft, and an outer one that possesses no vertical component of velocity but does have azimuthal and radial components. It is observed that the radial pressure difference between an arbitrary radial distance and the point of the maximum wind diminishes with height, time, and Reynolds number. The azimuthal velocity, close to the ground, in region 1 increases fast with time, but its dependence diminishes at a height a little above the ground. At a considerable height, time ceases to be a factor, and further, above that, trends reverse. Perturbation terms behave almost identically with the terms without perturbation. The significance of their contribution depends on the magnitude of the Reynolds number and, hence, the viscosity. Trends for region 2 are qualitatively similar to those in region 1 but differ quantitatively. It is also observed that the central pressure drop decreases with time.
Les déterminants organisationnels des pratiques d’adéquation formation-emploi : une étude exploratoire auprès de PME manufacturières
Authors: Bernier Amélie , Michaud Renée , Ben Mansour Jamal
Published: March 2020

La prise de décision des employeurs pour corriger en leur sein l’inadéquation formation-emploi, dont les écarts de compétences, repose sur l’obtention d’une information complète et précise. Cependant, nous savons peu de choses sur les facteurs qui influencent l’implantation d’un ensemble de pratiques favorisant l’adéquation formation-emploi. Les objectifs initiaux de cet article sont d’étudier l’effet des déterminants sur les situations d’inadéquation formation-emploi et sur les pratiques mises en oeuvre pour y faire face. La réalisation de tests statistiques a permis également d’étudier les relations complexes entre les déterminants, l’adéquation formation-emploi et les pratiques de gestion des ressources humaines (GRH) dans la prolongation des travaux sur l’approche des constituantes multiples. À l’aide des données recueillies auprès de 376 responsables de la GRH dans des petites et moyennes entreprises manufacturières québécoises, nous avons d’abord exploré les déterminants de l’adéquation formation-emploi, puis l’existence de relations significatives entre les déterminants et un bouquet de pratiques favorisant l’adéquation formation-emploi. Nos résultats montrent que la présence d’une stratégie de formation, celle d’un budget de formation et celle d’un plan d’attraction et de rétention sont des facteurs importants facilitant l’implantation de pratiques d’adéquation. L’analyse confirme aussi un effet de modération de la situation d’adéquation dans la relation entre les déterminants et l’adoption d’un ensemble de pratiques selon deux types de mécanismes, à savoir un mécanisme de régulation en cas de sous-compétence et un mécanisme de complémentarité en situation de surcompétence.
Vers la construction d’une culture organisationnelle de santé mentale au service des acteurs de changement dans l’économie sociale et solidaire
Authors: Broucke Clarisse , Codello Penelope
Published: March 2020

S’engager dans une carrière à vocation sociale n’implique pas toujours une vie professionnelle et personnelle épanouie. Les acteurs de l’économie sociale et solidaire qui seront désignés ici sous le terme « acteurs de changement », peuvent eux aussi rencontrer au cours de leur carrière des enjeux de santé mentale importants les menant à des épuisements professionnels, des dépressions ou d’autres épisodes critiques de santé mentale. L’article propose une analyse des enjeux de santé mentale de ces acteurs dans une perspective psychodynamique. Les facteurs individuels, collectifs et organisationnels interagissent au sein d’un écosystème complexe qui peut produire des effets délétères en matière de santé mentale. Mais l’article conclut sur une discussion autour des leviers qui émanent de cette même dynamique. Un cercle plus vertueux peut se mettre en place si les organisations de l’économie sociale et solidaire parviennent à faire naître et entretenir une culture de santé mentale.
Analysis and Modelling of Annamalai Computing Geometric Series and Summability
Authors: Chinnaraji Annamalai
Published: March 2020

This paper presents a mathematical model for the formation as well as computation of geometric series in a novel way. Using Annamalai computing methoda simple mathematical model is established for analysis and manipulation of geometric series and summability.This new modelcould be used in the research fields of physics, engineering, biology, economics, computer science, queueing theory, and finance. In this paper, a novel computational model had also been developed such that a∑i=k∞ yi=ayk/1-y and ∑i=0∞ ∑j=i∞ ayj=a/(1-y)2,(0<y<1). This could be very interesting and informative for current students and researchers.
Binet – Type Formula For The Sequence of Tetranacci Numbers by Alternate Methods
Authors: Gautam S. Hathiwala  , Devbhadra V. Shah
Published: March 2020

The sequence {Tn} of Tetranacci numbers is defined by recurrence relation Tn= Tn-1 + Tn-2 + Tn-3 + Tn-4; n≥4 with initial condition T0=T1=T2=0 and T3=1. In this Paper, we obtain the explicit formulla-Binet-type formula for Tn by two different methods. We use the concept of Eigen decomposition as well as of generating functions to obtain the result.
Metaanálisis: efectos de técnicas de preparación mental basadas en imaginería - hipnosis sobre flow y rendimiento deportivo
Authors: Garzón Mosquera Julián Camilo , Araya Vargas Gerardo Alonso
Published: March 2020

El presente estudio tiene como objetivo examinar la efectividad de técnicas psicológicas de preparación mental basadas en imaginería o hipnosis sobre el estado de flow, el rendimiento deportivo y su relación, mediante la técnica meta analítica. Se realizó la revisión de literatura en diez bases de datos durante los meses de agosto a octubre de 2017, donde se incluyeron 17 estudios; relacionados con actividades deportivas y estudios que presentan mediciones pretest-postest. Se analizó un TE con diferencia de medias bajo modelo aleatorio. Obteniendo un total de 53 tamaños de efecto (TE) para estado de flow y 62 tamaños de efecto (TE) para rendimiento. Se encontró un TE positivo para el estado de flow (TE= .782; n=52; p< .001) y para el rendimiento (TE= .339; n=60; p<.05), se comprueba la relación positiva entre las dos variables (ρ= .312; p<.05); se establece que variables más relevantes que moderan el tamaño de efecto del estado de flow y el rendimiento son: edad, años de experiencia deportiva, sexo. Se concluye que la imaginería es la técnica psicológica más efectiva para incrementar el estado de flow y el rendimiento, se recomienda realizar investigaciones con diseño experimental puro y contemplar la medición multi-dimensional del estado de flow.
Two-colour Three-pulse Spectrally Resolved Nonlinear Spectroscopy for Studies of Dynamics in Semiconductor Si Quantum Dots
Authors: Cuong Vuong Van , Khuong Dinh Ba , Lap Dao Van
Published: March 2020

We demonstrate that a two-colour three-pulsenonlinear spectroscopy can be used to study the dynamics of excited carriers inSi quantum dot structures embedded in SiN. Decays of the transverse optical phonon population and the transverse acoustic phonon population are measured and discussed. A simple theoretical modelis also used to support interpretation of our experimental observations.
Integrated Cross Sections of the Photo-Neutron Reactions Induced on \(^{197}\)Au with 60 \(\text{MeV}\) Bremsstrahlung
Authors: Do Nguyen Van , Luan Nguyen Thanh , Xuan Nguyen Thi , Khue Pham Duc , Thanh Kim Tien , Loat Bui Van , Hien Nguyen Thi , Kim Guinyun
Published: March 2020

Abstract. Seven photo-neutron reactions 197Au(γ,xn)197-xAu (with x=1-7) produced by the bremsstrahlung end-point energy of 60 MeV were identified. In this work, we focus on the measurement of integrated sections. Experiments were carried out based on the activation method in combination with off-line gamma-ray spectrometric technique. The integrated cross sections of the investigated reactions were determined relative to that of the monitoring reaction 197Au(γ,n)196Au. To validate the experimental results, theoretical predictions were also made using the computer code TALYS 1.9. The current integrated cross-sections of the 197Au(γ,xn)197-xAu reactions with 60 MeV bremsstrahlung end point energy are measured for the first time.
Observation of High Doppler Velocity Wings in the Nascent Wind of R Doradus
Authors: Do Hoai Thi , Pham Nhung Tuyet , Pham Tuan-Anh , Darriulat Pierre , Pham Diep Ngoc , Nguyen Phuong Thi , Tran Thai Thi
Published: March 2020

We study the morpho-kinematics in the nascent wind of AGB star R Doradus in the light of high Doppler velocity wings observed in the spectral lines of several species. We probe distances from the star between ∼10 and ∼100 au using ALMA observations of the emission of five different molecular lines. High Doppler velocity enhancements of the line emission are observed in the vicinity of the line of sight crossing the star, reminiscent of those recently interpreted as gas streams in the nascent wind of a similar AGB star, EP Aqr. They are present in both blue-shifted and red- shifted hemispheres but are not exactly back-to-back. They are accelerated at a typical rate of 0.7 km s\(^{−1}\) au\(^{−1}\) up to some 20 km s\(^{−1}\). Important differences are observed between the emissions of different molecules. We exclude an effect of improper continuum subtraction. However, in contrast to EP Aqr, the line of sight plays no particular role in the R Dor morpho-kinematics, shedding doubt on the validity of a gas stream interpretation. We discuss possible interpretations in terms of stellar pulsations or of rotation of the gas in the environment of the star. We conclude that, in the state of current knowledge, no fully convincing picture of the physics governing the production of such high velocities, typically twice as large as the terminal velocity, can be reliably drawn. New high resolution analyses of observations of the nascent wind of oxygen-rich AGB stars are needed to clarify the issue.
NARRATIVAS HISTÓRICAS EM DISPUTA: UM ESTUDO DE CASO NO YOUTUBE
Authors: Fontoura Odir
Published: March 2020

RESUMO Este artigo pretende tratar das diferentes narrativas que envolvem a disciplina da história na plataforma YouTube. A partir de um mapeamento, foi analisada uma série de vídeos, e de uma análise quantitativa e qualitativa desses materiais foi possível inferir, por um lado, uma inexpressividade das produções feitas por instituições públicas ou universitárias e, por outro, um grande número de vídeos que trazem uma visão revisionista ou contestadora da história acadêmica. Concluiu-se, a partir dessas investigações, a respeito da necessidade de uma maior atuação da academia e dos historiadores profissionais nesses espaços de produção e de discussão de narrativas, o que poderia responder a uma demanda educacional identificada que ocorre tanto dentro do espaço físico e formal da sala de aula quanto fora dele, em espaços online que, visando a se constituir em oposição à escola formal, oferecem-se como alternativas nas disputas das narrativas da história.
NOVIDADES NO FRONT: EXPERIÊNCIAS COM HUMANIDADES DIGITAIS EM UM CURSO DE HISTÓRIA NA PERIFERIA DA GRANDE SÃO PAULO
Authors: FERLA LUIS ANTONIO COELHO , LIMA LUÍS FILIPE SILVÉRIO , FEITLER BRUNO
Published: March 2020

RESUMO A partir das indefinições do que sejam as humanidades digitais e da concepção de que o compartilhamento de experiências concretas pode enriquecer essa discussão, são apresentadas iniciativas levadas a cabo no Departamento de História da Universidade Federal de São Paulo (Unifesp). Para dar maior diversidade ao material apresentado, foram escolhidos projetos de um grupo de pesquisas e de uma disciplina de graduação. Assim, com centros de gravidade na pesquisa e na docência, os projetos analisados propõem um maior reconhecimento do papel do graduando nas humanidades digitais. Da análise sai reforçado o paradoxo de que os trabalhos em humanidades digitais são institucionalmente subvalorizados, ao mesmo tempo que facilitam a colaboração e a livre circulação do conhecimento.
HISTÓRIA DIGITAL: REFLEXÕES A PARTIR DA HEMEROTECA DIGITAL BRASILEIRA E DO USO DE CAQDAS NA REELABORAÇÃO DA PESQUISA HISTÓRICA
Authors: BRASIL ERIC , NASCIMENTO LEONARDO FERNANDES
Published: March 2020

RESUMO O presente artigo pretende discutir o papel do uso de ferramentas digitais na pesquisa e na escrita da história, refletindo sobre as transformações e os desafios no modo de produção do conhecimento na prática de investigação da ciência histórica, abordando dois aspectos fundamentais: a) o progressivo uso de fontes de pesquisa provenientes de acervos ou repositórios digitais, por meio da análise da Hemeroteca Digital Brasileira (HDB) da Biblioteca Nacional (BN); e b) a maneira como os aplicativos de análises de dados qualitativos - CAQDAS, acrônimo do inglês computer assisted qualitative data analysis software - podem servir para minimizar os problemas e as limitações gerados pelo uso inadvertido e com pouco rigor metodológico das ferramentas digitais. Aqui, utilizaremos o programa ATLAS.ti como exemplo. Concluímos que a busca e a análise digital transformam não apenas a pesquisa histórica, mas possibilitam novas perguntas, problemas e respostas, impactando tanto a teoria quanto o método da disciplina.
Numerical analysis of collapse in a deep excavation supported by ground anchors
Authors: Baziar Mohammad Hassan , Ghadamgahi Alireza , Brennan Andrew John
Published: March 2020

On 3 October 2013, a global failure occurred in one of the stabilised sections of a deep excavation in Shahrak-e gharb in Tehran. The excavation was supported by ground anchors with enlarged reinforced concrete thrust blocks and sprayed concrete facing. The failure occurred despite the system passing conventional limit equilibrium design and satisfying requirements in terms of allowable displacements. The case of Shahrak-e gharb was modelled using Abaqus in order to understand the soil deformation leading to the failure condition. It was found that a near-surface zone of weaker fill material was responsible for the failure. As the displacements during construction and the soil failure mechanisms were well matched by the numerical model, the case study was considered to be a validation case for the numerical model and a parametric study on the extent to which anchoring bypassed the weaker surface soil was performed. This study showed that proper embedment into competent soils is important as excessive strains can still develop if the anchor bond zone is insufficiently confined, potentially leading to progressive collapse.
Time-dependent flexural performance and design procedures for steel-bars truss slabs
Authors: Wang Qinghe , Yang Jinsheng , Liang Yongze , Zhang Yuzhuo , Fang Yanfeng
Published: March 2020

Thin-walled steel decks have been generally treated as permanent formwork in the routine design of steel-bars truss slabs, and their effects on the time-dependent behaviour of steel-bars truss slabs have not been quantified. The objective of this study was to propose design procedures for the time-dependent behaviour of steel-bars truss slabs accounting for the effects of soffit steel decks. For this purpose, two full-scale slab samples were tested for 9 months, with one slab subjected to non-uniform shrinkage and sustained loading and the other slab subjected to only non-uniform shrinkage. Typical design equations for reinforced concrete slabs and composite steel–concrete slabs were benchmarked against available test results to verify their applicability. Non-linear finite-element models were established to describe the time-dependent behaviour of steel-bars truss slabs, and simplified design procedures were proposed. It was found that the steel-bars truss sample subjected to non-uniform shrinkage had a mid-span deflection accounting for 52·4% of the total deflection; that the design methods in available composite structure standards significantly underestimated the long-term deflections; and that the proposed design procedures well predicted the time-dependent deflections of steel-bars truss slabs by considering the influence of the shrinkage gradient.
Famílias: Entre Dispositivos Jurídicos, Rizomas, Identidades e Filiação
Authors: De Garay Hernández Jimena , Gomes Nunes Roberta , Lopes Guilhon Flavio
Published: March 2020

No presente artigo usaremos como disparador da análise um caso ao qual tivemos acesso em experiências de pesquisa. A partir dele, analisaremos as forças que se atravessam na produção e transformação das relações familiares, considerando os aspectos cotidianos e jurídicos, com ênfase nos múltiplos discursos, sobretudo os pautados no machismo, sexismo, heterossexismo e LGBTfobia, que delimitam a pluralidade das existências no campo da diversidade sexual e de gênero, bem como as potencialidades rizomáticas de ser família. Essas forças extremamente complexas se entrelaçam na contemporaneidade, apesar dos muitos avanços neste campo, na tentativa de afirmar apenas um modelo único de ser, de se relacionar e de ser família, a partir de uma matriz cisheteronormativa que tende a excluir outros modos de vida.