bluuebunny/crossref_metadata_2025_split huggingface dataset:
CSI‐based authentication: Extracting stable features using deep neural networks
Authors: Yazdani Abyaneh Amirhossein , Pourahmadi Vahid , Hosein Gharari Foumani Ali 
Published: November 2019

AbstractThe first step of secure communication is authenticating users and detecting malicious ones. In recent years, some promising schemes have been proposed using wireless medium network's features, in particular, channel state information (CSI) as a means of authentication. These schemes mainly compare the user's previous CSI with the new received CSI to determine if the user is what it is claiming to be. Despite high accuracy, these approaches lack the stability in authentication when the users rotate in their positions. It is due to the significant change in CSI when a user rotates, which misleads the authenticator when it compares the new CSI with the previous ones. Our approach presents a way of extracting features from raw CSI measurements, which are stable with respect to rotation. We employ a deep neural network to extract these features. We also present a scenario in which users can be efficiently authenticated while they are at specific locations in an environment (even if they rotate) and will be rejected if they change their location. In addition, experimental results are presented to show the performance of the proposed scheme.
On the predictability of crude oil market: A hybrid multiscale wavelet approach
Authors: Bekiros Stelios , Arreola Hernandez Jose , Salah Uddin Gazi , Muzaffar Ahmed Taneem 
Published: November 2019

AbstractPast research indicates that forecasting is important in understanding price dynamics across assets. We explore the potentiality of multiscale forecasting in the crude oil market by employing a wavelet multiscale analysis on returns and volatilities of Brent and West Texas Intermediate crude oil indices between January 1, 2001, and May 1, 2015. The analysis is based on a shift‐invariant discrete wavelet transform, augmented by an entropy‐based methodology for determining the optimal timescale decomposition under different market regimes. The empirical results show that the five‐step‐ahead wavelet forecast that is based on volatilities outperforms the random walk forecast, relative to the wavelet forecast that is based on returns. Optimal wavelet causality forecasting for returns is suggested across all frequencies (i.e., daily–yearly), whereas for volatilities it is suggested only up to quarterly frequencies. These results may have important implications for market efficiency and predictability of prices on the crude oil markets.
Framing Flexible Spending Accounts: A Large‐Scale Field Experiment on Communicating the Return on Medical Savings Accounts
Authors: Leight Jessica , Wilson Nicholas 
Published: November 2019

AbstractTax‐preferred health savings devices such as Flexible Spending Accounts (FSAs) and Health Savings Accounts (HSAs) offer employees potentially valuable financial instruments for directing pre‐tax earnings to eligible medical expenses. Despite their increasing popularity as an employee benefit, however, there is little causal evidence around individual demand for these accounts. This paper seeks to address this gap in the literature, reporting on a randomized controlled field experiment conducted with over 11,000 U. S federal employees in 2017 in order to evaluate the effectiveness of targeted messages designed to increase FSA contributions. Our results suggest that the provision of basic information about FSAs delivered via an emailed employee newsletter did not affect the likelihood of contribution or the contribution level. The addition of statements about the absolute returns or relative returns offered by the accounts similarly had no significant effects, and these null effects are observed despite relatively high email open rates. We discuss explanations for the null results and the policy implications of findings from what appears to be the first health economics experiment analyzing tax incentives around health care savings.
Recent Advances in Magic Angle Spinning‐Dynamic Nuclear Polarization Methodology
Authors: Kaminker Ilia 
Published: November 2019

AbstractDynamic nuclear polarization (DNP) is a method to boost the nuclear magnetic resonance (NMR) signal and thus alleviate the main limitation of NMR spectroscopy‐its low sensitivity. One particularly successful methodology is the combination of DNP with magic angle spinning (MAS). MAS‐DNP enables orders of magnitude signal enhancements in solid‐state NMR experiments. The success of modern MAS‐DNP stems from a combination of multiple developments in hardware, polarization agents design, sample preparation, theoretical understanding, and experimental methodology. Altogether these developments have allowed numerous breakthrough applications in biology and materials science. Despite its proven successes, ongoing research aims to further optimize hardware and polarization agent chemistry. Recent advances in MAS‐DNP methodology that will allow unprecedented sensitivity in novel future applications are reviewed in this manuscript.
Osteogenic stimulation of human dental pulp stem cells with self‐setting biphasic calcium phosphate cement
Authors: Gu Yingzhi , Zhuang Rui , Xie Xianju , Bai Yuxing 
Published: November 2019

AbstractCalcium phosphate cement (CPC) is widely used as a repair material for bone defects. However, there is no report on the use of biphasic CPC combined with dental pulp stem cells (DPSCs) for bone tissue engineering. The aim of this study was to construct biphasic CPC and to investigate its effect in the osteogenic stimulation of human DPSCs (hDPSCs) and macrophage polarization. Biphasic CPC was developed by adding different ratios of β‐TCP to an equimolar mixture of tetracalcium phosphate (TTCP) and dicalcium phosphate anhydrous (DCPA). The biocompatibility, osteogenic capacity, and inflammatory reactions of the cements were examined. Our results show that biphasic CPC containing both HA and β‐TCP was successfully fabricated. The addition of β‐TCP did not increase necrosis or apoptosis of DPSCs. Significant increases in hDPSC mineral deposition and osteogenic marker (ColI and ALP) expression were observed in 20% TCP‐CPC. The addition of β‐TCP did not promote macrophage polarization to a proinflammatory phenotype. In conclusion, biphasic CPC with hDPSCs for bone regeneration was developed for the first time; the biphasic CPC combined with hDPSCs is expected to be used for the repair and regeneration of bone.
The new management of recordkeeping
Authors: Wiatt Reina G. 
Published: November 2019

AbstractThis article focuses on the emerging applications of blockchain technology for recordkeeping and data management requirements. Blockchain—the technology supporting Bitcoin and other cryptocurrencies—is a shared ledger that maintains transactions and documents in digital form. In a time when businesses face challenges in managing data security, there is a compelling case for developing a digital‐based recordkeeping system to address social problems on a global scale. Improving food supply chain safety, reducing the conflict diamond trade, and assisting refugees in preserving identity and academic credential records are just a few of the solutions offered by blockchains. Our global economy depends on the ability to create, store, and share accurate records. While implementation challenges remain, blockchain technology's ability to store and distribute immutable documents has the potential to improve data management security for industries worldwide.
Typical epidemiology of respiratory virus infections in a Brazilian slum
Authors: Góes Luiz Gustavo Bentim , Zerbinati Rodrigo Melim , Tateno Adriana Fumie , de Souza Andrea Vieira , Ebach Fabian , Corman Victor M. , Moreira‐Filho Carlos Alberto , Durigon Edison Luiz , da Silva Filho Luiz Vicente Ribeiro Ferreira , Drexler Jan Felix 
Published: November 2019

AbstractHost population size, density, immune status, age structure, and contact rates are critical elements of virus epidemiology. Slum populations stand out from other settings and may present differences in the epidemiology of acute viral infections. We collected nasopharyngeal specimens from 282 children aged ≤5 years with acute respiratory tract infection (ARI) during 2005 to 2006 in one of the largest Brazilian slums. We conducted real‐time reverse transcription‐polymerase chain reaction (RT‐PCR) for 16 respiratory viruses, nested RT‐PCR‐based typing of rhinoviruses (HRVs), and collected clinical symptoms. Viruses were common causes of respiratory disease; with ≥1 virus being detected in 65.2% of patients. We detected 15 different viruses during 1 year with a predominance of HRV (33.0%) and human respiratory syncytial virus (hRSV, 12.1%) infections, and a high rate of viral coinfections (28.3%). We observed seasonality of hRSV, HRV and human coronavirus infections, more severe symptoms in hRSV and influenza virus (FLU) infections and prolonged circulation of seven HRV clusters likely representing distinct serotypes according to genomic sequence distances. Potentially unusual findings included the absence of human metapneumovirus detections and lack of typical FLU seasonal patterns, which may be linked to the population size and density of the slum. Nonetheless, most epidemiological patterns were similar to other studies globally, suggesting surprising similarities of virus‐associated ARI across highly diverse settings and a complex impact of population characteristics on respiratory virus epidemiology.
Unmagnetized plasma media parameters reconstruction using FDTD and gradient‐based minimization method
Authors: Deng Haochuan , Shi Lijuan , Feng Xuejian , Wei Xiao , Yin Hongcheng 
Published: November 2019

AbstractA time‐domain inverse scattering algorithm for determining unknown plasma resonance frequency and electron collision frequency of unmagnetized plasma media object has been proposed. Finite‐difference time‐domain (FDTD) method in conjunction with Lagrange multipliers and gradient‐based minimization method are used in the proposed algorithm. The reconstruction of the parameters is based on the minimization of a cost function that describes the discrepancy between simulation and measured data of the electric field at the observation points. In order to obtain the gradient value of the unknown plasma parameters, an augmented cost function has been given by means of Lagrange multipliers with the Maxwell curl equations and constitutive relation of the unmagnetized plasma media. Then, the gradient value could be obtained after a series of transformations. At last, the Ploak‐Ribiere conjugate gradient algorithm has been applied to update the plasma parameters iteratively. The effectiveness of the proposed algorithm has been validated through the simulation test.
Fibrin Matrices as (Injectable) Biomaterials: Formation, Clinical Use, and Molecular Engineering
Authors: Roberts Iwan Vaughan , Bukhary Deena , Valdivieso Christopher Yusef Leon , Tirelli Nicola 
Published: November 2019

AbstractThis review focuses on fibrin, starting from biological mechanisms (its production from fibrinogen and its enzymatic degradation), through its use as a medical device and as a biomaterial, and finally discussing the techniques used to add biological functions and/or improve its mechanical performance through its molecular engineering. Fibrin is a material of biological (human, and even patient's own) origin, injectable, adhesive, and remodellable by cells; further, it is nature's most common choice for an in situ forming, provisional matrix. Its widespread use in the clinic and in research is therefore completely unsurprising. There are, however, areas where its biomedical performance can be improved, namely achieving a better control over mechanical properties (and possibly higher modulus), slowing down degradation or incorporating cell‐instructive functions (e.g., controlled delivery of growth factors). The authors here specifically review the efforts made in the last 20 years to achieve these aims via biomimetic reactions or self‐assembly, as much via formation of hybrid materials.
On the energy decay rates for the 1D damped fractional Klein–Gordon equation
Authors: Malhi Satbir , Stanislavova Milena 
Published: November 2019

AbstractWe consider the fractional Klein–Gordon equation in one spatial dimension, subjected to a damping coefficient, which is non‐trivial and periodic, or more generally strictly positive on a periodic set. We show that the energy of the solution decays at the polynomial rate for and at some exponential rate when . Our approach is based on the asymptotic theory of C0 semigroups in which one can relate the decay rate of the energy in terms of the resolvent growth of the semigroup generator. The main technical result is a new observability estimate for the fractional Laplacian, which may be of independent interest.
Coldwater Periods in Warmwater Streams: Microhabitat Shifts from Autumn to Winter by Smallmouth Bass
Authors: Wolf Skylar L. , Mollenhauer Robert , Brewer Shannon K. 
Published: November 2019

Abstract
Seasonal and life stage variation in microhabitat use is an important driver of fish survival and bioenergetics, but knowledge of microhabitat selection during colder periods is generally lacking in warmwater streams. Our objective was to examine changes in microhabitat selection by age-0 (TL ≤ 85 mm) and age-1+ (TL &gt; 85 mm) Smallmouth Bass Micropterus dolomieu from autumn to winter in streams of the southwest Ozark Highlands ecoregion. We examined microhabitat selection (depth, velocity, substrate, cover, and temperature) during autumn 2017 (Spavinaw Creek) and winter 2018 (Spavinaw and Spring creeks). During autumn and winter, age-0 fish selected intermediate depths of approximately 1 m, whereas age-1+ fish selected the deepest available habitat. Water depth selection was similar across seasons for both life stages. Both age-0 and age-1+ bass selected areas of zero velocity, increasing substrate size, instream cover, and warmwater patches in autumn. Velocity selection differed between autumn and winter with both life stages showing stronger selection of low velocity patches (0.1–0.3 m/s) during winter. Both life stages shifted to having no substrate selection during winter. Age-1+ bass were more likely than age-0 bass to use cover during autumn, but this relationship shifted in winter to the age-0 cohort increasing their selection of cover and the age-1+ cohort decreasing their selection. Both age-0 and age-1+ bass selected relatively warmer habitats during autumn, but not winter. Collectively, our results highlight both seasonal and life stage variation in Smallmouth Bass microhabitat selection. As our understanding of habitat selection across seasons develops, the management of Smallmouth Bass will undoubtedly improve. Changing environmental conditions over time may influence available habitat as well as the timing of seasonal shifts across a range of spatial and temporal scales, including microhabitat patches.
Lipid Emulsion Therapies and Type 1 Hypersensitivity Reactions: Risk Assessment and Management
Authors: Franz Nicholas , Pleva Melissa , Nordbeck Sarah 
Published: November 2019

AbstractOver the past decades, awareness and attention given to food allergies has extended further into the realm of pharmacotherapy. Despite the presence of similar ingredients, different intravenous lipid emulsion (ILE)–based medication products have a wide variety of warnings and contraindications for patients with food allergies. Only limited literature is available to guide clinicians in making appropriate medication therapy adjustments to reduce the risk of hypersensitivity reactions in atopic patient populations. Therefore, the authors sought to develop a comprehensive review of potential risk factors or approaches for management of patients with atopic history and need for ILE therapy. Through thorough review of available literature published worldwide, a description of potential contraindications, risk factors, and evaluation methods is presented. Although the current state of knowledge remains relatively poor, this review aims to provide clinicians a better understanding of which risk factors related to the development of hypersensitivity reactions are relevant to lipid emulsion products and how to best manage patients who may be at risk for severe reaction based on their history. Evaluating personal atopic history is essential to the development of an appropriate risk classification system and approaching an individual's therapeutic options. By applying this assessment to local populations, providers should be able to develop an institutional guideline for screening and minimizing risk of substantial hypersensitivity reactions. Finally, a brief review of methods for managing type 1 hypersensitivity reactions is provided in the event that a breakthrough reaction does occur.
Exploring the barriers to patient engagement in the delivery of safe care in Iranian hospitals: A qualitative study
Authors: Chegini Zahra , Janati Ali , Babaie Javad , Pouraghaei Mahboub 
Published: November 2019

AbstractAimTo investigate barriers to patient engagement in the delivery of safe hospital care.DesignQualitative exploratory study.MethodsA qualitative study with 35 Iranian health professionals was conducted from February to April 2019 using semi‐structured interviews to elicit their opinions. MAXQDA 11 software was used for data management, and the data were analysed using framework analysis.ResultsBarriers, which potentially have negative impact on patient engagement in the delivery of safer care, were categorized into four themes. The first category included patient‐related barriers such as low levels of health literacy, ineffective education, patient unwillingness and cultural barriers. The second category included staff‐related barriers such as the existence of negative attitudes towards engaging patients in matters relating to patient safety, ineffective communication, high workload and the reluctance on the part of physicians to engage with patients. Barriers created by limited resources and inadequate training provided by universities and in the workplace formed the third category and community‐related barriers such as the inadequate dissemination of information via the mass media and a lack of community‐based services formed the fourth category.ConclusionResults demonstrate the multilayered nature of the significant barriers to the engagement of patients in the delivery of safe care and reflect the need for a collaborative approach between the recipients of care, researchers, care providers and policy makers if these are to be overcome.
Visible‐to‐UV Photon Upconversion in Nanostructured Chromophoric Ionic Liquids
Authors: Hisamitsu Shota , Miyano Junji , Okumura Keisuke , Hui Joseph Ka‐Ho , Yanai Nobuhiro , Kimizuka Nobuo 
Published: November 2019

AbstractVisible‐to‐ultraviolet (vis‐to‐UV) triplet‐triplet annihilation based photon upconversion (TTA‐UC) is achieved in a non‐volatile chromophoric ionic liquid (IL) for the first time. A novel IL is synthesized by combining UV‐emitting anion 4‐(2‐phenyloxazol‐5‐yl)benzenesulfonate (PPOS) and trihexyltetradecylphosphonium cation (P66614). The nanostructured organization of chromophoric anions is demonstrated by synchrotron X‐ray and optical measurements. When the IL is doped with a triplet sensitizer tris(2‐phenylpyridinato)iridium(III) (Ir(ppy)3), the visible‐to‐UV TTA‐UC with a relatively low threshold excitation intensity of 61 mW cm−2 is achieved. This is due to a large triplet diffusion coefficient in the IL (1.4×10−7 cm2 s−1) as well as a high absorption coefficient 15 cm−1 and a long PPOS triplet lifetime of 1.55 ms, all implemented in the condensed IL system. This work demonstrates the unique potential of ILs to control chromophore arrangements for desired functions.
Human articular cartilage repair: Sources and detection of cytotoxicity and genotoxicity in photo-crosslinkable hydrogel bioscaffolds
Authors: Lee Cheryl , O'Connell Cathal D. , Onofrillo Carmine , Choong Peter F. M. , Di Bella Claudia , Duchi Serena 
Published: November 2019

Abstract
Three-dimensional biofabrication using photo-crosslinkable hydrogel bioscaffolds has the potential to revolutionize the need for transplants and implants in joints, with articular cartilage being an early target tissue. However, to successfully translate these approaches to clinical practice, several barriers must be overcome. In particular, the photo-crosslinking process may impact on cell viability and DNA integrity, and consequently on chondrogenic differentiation. In this review, we primarily explore the specific sources of cellular cytotoxicity and genotoxicity inherent to the photo-crosslinking reaction, the methods to analyze cell death, cell metabolism, and DNA damage within the bioscaffolds, and the possible strategies to overcome these detrimental effects.

Significance statement Several hurdles need to be addressed before the clinical translation of articular cartilage regeneration procedures using photo-crosslinkable hydrogels. Cellular cytotoxicity and genotoxicity need to be identified and carefully detected to provide an indication of the safety of the repair treatment approach in patients.
Measuring the urban sustainable development in cities through a Composite Index: The case of Portugal
Authors: Rodrigues Margarida , Franco Mário 
Published: November 2019

AbstractThis study aims to systematize indicators and indices that allow measurement sustainable development in cities and towns (economic, social, and environmental). It is one dimension that is inseparable from current cities and its extent is a major concern for political decision‐makers worldwide, and also present their individual weights in that performance. The results allow construction of a Composite Index for Sustainability supported by multivariate statistical techniques (Exploratory Factor Analysis and Principal Component Analysis), confirming its scientific quality and robustness, and forming the main contribution of this study. The results also show that the urban sustainability dimension is visible in the 308 Portuguese cities/towns in a tri‐partite way. Economic sustainability (weighting of 0.386) has been strengthened by entrepreneurship, which has created new business supported by public–private partnerships, such as living labs, which has contributed to less urban unemployment. Standing out in social sustainability (weighting of 0.245) is the development of projects promoting cohesion and social inclusion and actions to improve social infrastructure in Portuguese towns. Finally, environmental sustainability (weighting of 0.369), which locally in Portugal, has emphasized waste management and actions to preserve and protect natural resources and the environment in general. However, more effective actions are needed for their sustainability to continue to improve substantially in the long term, for example, environmentally. Furthermore, the towns/cities analysed must change to the circular economy model as proposed by the European Union.
2,4‐Diphenyl‐1,2‐dihydroquinazoline Derivatives: Synthesis, Anticancer Activity and Docking Studies
Authors: Gudimella Krishna Kanthi , Bonige Kishore Babu , Gundla Rambabu , Katari Naresh Kumar , Yamajala Bhaskar , Battula Venkateswara Rao 
Published: November 2019

AbstractA straightforward, rapid and efficient one‐pot method was developed for the synthesis of 2,4 ‐diphenyl‐1,2 dihydroquinazoline and their analogues. The reactions were performed with different type of benzylamine and 2‐bromo benzophenone using ammonium acetate and characterized by 1H NMR, 13C NMR and Mass spectroscopic techniques. All the compounds were tested for MDA‐MB‐231, A549 and DU‐145 type of human cancer cell lines. Among the synthesized compounds, 4 j (4‐phenyl‐2‐(3,4,5‐trimethoxyphenyl)‐1,2‐dihydroquinazoline) and 4 e (2‐(3,4‐dichlorophenyl)‐4‐phenyl‐1,2‐dihydroquinazoline) molecules were found to possess good anticancer activity. The binding nature of these molecules was explored through docking studies.