bluuebunny/crossref_metadata_2025_split huggingface dataset:
Enhancing physical layer security via channel feedback: a survey
Authors: Dai Bin , Li Chong , Liang Yingbin , Poor H. Vincent , (Shitz) Shlomo Shamai 
Published: March 2020

AbstractPhysical layer security (PLS), which is based on information-theoretic principles of message confidentiality, has attracted considerable attention in recent years. This paper provides a comprehensive survey of using channel feedback (CF) to enhance the quality of PLS of various communication models. To be specific, the survey starts from the secret key-based CF scheme and its variations for the wiretap channel (WTC) and other communication models. Then, for the WTC and its generalized models, an improved feedback scheme and its variations are respectively introduced, where the improved scheme combines the secret key-based CF scheme with the Wyner-Ziv scheme for source coding with side information. It has been shown that these improved schemes perform better than the original secret key-based schemes for several cases. Next, the Schalkwijk-Kailath (SK) feedback scheme and its variations are introduced, which are optimal for the Gaussian WTC and its variations. Finally, the already existing CF schemes are summarized and the future challenges of using CF to enhance PLS are discussed.
Modelling wooden cultural heritage. The need to consider each artefact as unique as illustrated by the Cannone violin
Authors: Marcon Bertrand , Goli Giacomo , Fioravanti Marco 
Published: March 2020

Abstract
This research work investigates the possibility to use a hygroscopic model based on Fick’s law to predict the global moisture content variations an historical violin undergoes during a concert. To set up the model to work some input are required such as: the object geometries, the wood species used, the thicknesses, the moisture diffusion coefficients, the permeability of varnished surfaces, the anhydrous masses of the moisture exchanging parts, the sorption isotherms, information often far from being available or measurable. At a first extent, the model was run on the environmental conditions recorded during nine concerts played with the “Cannone” violin (1743) and the computed mass variations compared with the mass variations recorded during the same concerts. The model, set with simplifying conditions and with diffusion coefficients from literature, has shown a very little predictive capacity. On the other hand, the model was tuned on the experimental data using an inverse procedure for moisture diffusion coefficient identification. After the tuning the model has shown a very good predictive ability showing how Fick’s low can be profitably used to assess the mass transfer in a complex heritage object such as a violin. This paper highlights the possibility to successfully use the Fick’s law to model mass transfer in a violin but also makes evident how such models must be tuned with real measurements in order to be effective.
A case of septic pulmonary embolism caused by P. aeruginosa in a hemodialysis patient and review of the literature
Authors: Shimada Hiroki , Tanaka Mari , Takami Yohtaro , Teragaki Mariko , Maeda Kotaro , Saita Hirona , Nishikawa Seira , Taniguchi Keisuke , Iwanari Sachio , Ikeda Masaki , Takeoka Hiroya 
Published: March 2020

Abstract
Background
Septic pulmonary embolism (SPE) is an uncommon but serious complication resulting from infection of the blood. Gram-positive cocci, including methicillin-susceptible Staphylococcus aureus and methicillin-resistant Staphylococcus aureus, are the most common causative organisms of SPE. Few case reports have been published on SPE caused by Pseudomonas aeruginosa (P. aeruginosa), and thus, the consensus treatment of SPE caused by P. aeruginosa infections remains undetermined. Management of P. aeruginosa infection can be challenging due to its poor prognosis and antimicrobial resistance. Here, we report a case of successful combination antibiotic therapy for SPE associated with infective endocarditis (IE) caused by P. aeruginosa in a hemodialysis patient, with a review of the literature.

Case presentation
A 62-year-old man receiving maintenance hemodialysis as treatment for end-stage renal disease due to IgA nephropathy was admitted to our hospital with high fever and chills lasting 10 days. Chest computed tomography revealed multiple nodular shadows, and gram-negative rods were confirmed by blood culture obtained on admission. We suspected SPE and initiated meropenem (MEPM) treatment. P. aeruginosa was identified in blood cultures, and transesophageal echocardiography demonstrated vegetation on the tricuspid valve. Therefore, a diagnosis of SPE associated with IE caused by P. aeruginosa was made. P. aeruginosa isolates showed good susceptibility to MEPM, but no symptomatic improvement was observed. Thus, antibiotics were changed from MEPM to a combination of ceftazidime and tobramycin (TOB). The patient exhibited a favorable response to the combination therapy, although we discontinued TOB on day 23 because of tinnitus symptoms.

Conclusions
We report a rare case of SPE associated with IE caused by P. aeruginosa in a hemodialysis patient. Combination antibiotic therapy may be effective in this situation.
The burden of Japanese encephalitis, the catch-up vaccination campaign, and health service providers’ perceptions in Myanmar: 2012–2017
Authors: Win Aung Ye Naung , Wai Khin Thet , Harries Anthony D. , Kyaw Nang Thu Thu , Oo Tin , Than Wint Phyo , Lin Htar Htar , Lin Zaw 
Published: March 2020

Abstract
Background
Myanmar is endemic for Japanese encephalitis (JE) and has experienced several outbreaks in recent years. The vector-borne disease control (VBDC) program has collected hospital-based surveillance data since 1974. There is an urgent need to collate, analyze, and interpret the most recent information. The study aimed to describe (i) hospital-based JE cases and deaths between 2012 and 2017, (ii) a catch-up vaccination campaign in children in 2017, and (iii) health service provider perceptions about JE in one township in 2018.

Methods
This was a cross-sectional study of cases, deaths, and catch-up childhood vaccinations using secondary data from program records and a survey database of health service provider perceptions.

Results
Between 2012 and 2017, there were 872 JE cases and 79 deaths with a case fatality rate of 91 per 1000; 2016 was the year with most cases and deaths. Most cases (n = 324) and deaths (n = 37) occurred in children aged 5–9 years. Large case numbers were reported in delta and lowland regions (n = 550) and during the wet season (n = 580). The highest case fatality rates were observed in the hills and coastal regions (120 and 112 per 1000, respectively). Nationwide coverage of the catch-up JE vaccination campaign among 13.7 million eligible children was 92%, with coverage lower in the hills and coastal regions (84%) compared with delta and lowland regions and plains (94%). More vaccinations (65%) occurred through school-based campaigns with the remainder (35%) vaccinated through community-based campaigns. Structured interviews in one township showed that service providers (n = 47) had good perceptions about various aspects of JE, although perceived benefits of specific vector control measures were poor: spraying/fumigation (38%), garbage removal (36%), larvicide use (36%), and drainage of standing/stagnant water (32%).

Conclusion
The catch-up vaccination campaign was a successful response to high JE case numbers and deaths in children. However, ongoing surveillance for JE needs to continue and be strengthened to ensure comprehensive reporting of all cases, more knowledge is needed on disability in JE survivors, and all attempts must be made to ensure high percentage coverage of vaccination through routine and catch-up campaigns.
Horosphere slab separation theorems in manifolds without conjugate points
Authors: Shenawy Sameh 
Published: March 2020

AbstractLet$\mathcal {W}^{n}$Wnbe the set of smooth complete simply connectedn-dimensional manifolds without conjugate points. The Euclidean space and the hyperbolic space are examples of these manifolds. Let$W\in \mathcal {W}^{n}$W∈Wnand letAandBbe two convex subsets ofW. This note aims to investigate separation and slab horosphere separation ofAandB. For example,sufficient conditions onAandBto be separated by a slab of horospheres are obtained. Existence and uniqueness of foot points and farthest points of a convex setAin$W\in \mathcal {W}$W∈Ware considered.
Mixed convection flow of nanofluid with Hall and ion-slip effects using spectral relaxation method
Authors: Ibrahim Wubshet , Anbessa Temesgen 
Published: March 2020

AbstractIn this article, the Hall and ion-slip effects on a mixed convection flow of an electrically conducting nanofluid over a stretching sheet in a permeable medium have been discussed. Using the similarity transformations, the partial differential equations corresponding to the momentum, energy, and concentration equations are transformed to a system of nonlinear ordinary differential equations which are solved numerically using a spectral relaxation method (SRM). The effects of significant parameters on the velocities, temperature, and concentration profiles are analyzed graphically. Moreover, the results of the skin friction coefficients, local Nusselt number, and Sherwood number are determined numerically. The results of the analysis showed that the velocity profile in the flow direction increases with an increase in mixed convection parameter λ, Hall parameter βh, and ion-slip parameter βi, and it decreases with an increase in the magnetic parameter M. Furthermore, temperature and concentration profiles decrease as the mixed convection parameter λ and buoyancy ratio Nr increase. It is also observed that the skin friction coefficients, local Nusselt number, and Sherwood number increase with an increase in the Hall parameter βh, mixed convection parameter λ, and buoyancy ratio Nr.
Fourth-order stable central difference with Richardson extrapolation method for second-order self-adjoint singularly perturbed boundary value problems
Authors: Siraj Muslima Kedir , Duressa Gemechis File , Bullo Tesfaye Aga 
Published: March 2020

AbstractThis study introduces a stable central difference method for solving second-order self-adjoint singularly perturbed boundary value problems. First, the solution domain is discretized. Then, the derivatives in the given boundary value problem are replaced by finite difference approximations and the numerical scheme that provides algebraic systems of equations is developed. The obtained system of algebraic equations is solved by Thomas algorithm. The consistency and stability that guarantee the convergence of the scheme are investigated. The established convergence of the scheme is further accelerated by applying the Richardson extrapolation which yields sixth order convergent. To validate the applicability of the method, two model examples are solved for different values of perturbation parameter ε and different mesh size h. The proposed method approximates the exact solution very well. Moreover, the present method is convergent and gives more accurate results than some existing numerical methods reported in the literature.
Fekete-Szegő inequalities for certain class of analytic functions connected with q-analogue of Bessel function
Authors: M. El-Deeb Sheza , Bulboacă Teodor 
Published: March 2020

AbstractIn this paper, we obtain Fekete-Szegő inequalities for a certain class of analytic functionsfsatisfying$1+\frac {1}{\zeta }\left [\frac {z\left (\mathcal {N}_{\nu,q}^{\lambda }f(z)\right)^{\prime }} {(1-\gamma)\mathcal {N} _{\nu,q}^{\lambda }f(z)+\gamma z\left (\mathcal {N}_{\nu,q}^{\lambda }f(z) \right)^{\prime }}-1\right ]\prec \Psi (z)$1+1ζzNν,qλf(z)′(1−γ)Nν,qλf(z)+γzNν,qλf(z)′−1≺Ψ(z). Application of our results to certain functions defined by convolution products with a normalized analytic function is given, and in particular, Fekete-Szegő inequalities for certain subclasses of functions defined through Poisson distribution are obtained.
Existence of cooperative search technique to find a Brownian target
Authors: El-Hadidy Mohamed Abd Allah 
Published: March 2020

AbstractThis article aims to study the existence of the cooperative search technique to find a Brownian target. We have 2n cooperative searchers coordinate their search to find a Brownian target that moves on one of n disjoint real lines. Each line has two searchers. All of these searchers start the searching process from the origin. Rather than finding the conditions that make the expected value of the first interviewing time between one of the searchers and the target is finite, we compute the approximate value of this expected value.
Multiset filters
Authors: Zakaria Amr , John Sunil Jacob , Girish K. P. 
Published: March 2020

AbstractA multiset is a collection of objects in which repetition of elements is essential. This paper is an attempt to generalize the notion of filters in the multiset context. In addition, many deviations between multiset filters and ordinary filters have been presented. The relation between multiset filter and multiset ideal has been mentioned. Many properties of multiset filters, multiset ultrafilters, and convergence of multiset filters have been introduced. Also, the notions of basis and subbasis have been mentioned in the multiset context. Finally, several examples have been studied.
An algorithm for solving the bi-objective median path-shaped facility on a tree network
Authors: Aboutahoun Abdallah , El-Safty Fatma 
Published: March 2020

AbstractIn this paper, an algorithm for the bi-objective median path (BMP) problem on a tree network is considered. The algorithm is based on the two-phase method which can compute all Pareto solutions for the BMP problem. The first phase is applied to find supported Pareto solutions by solving the uni-objective problem D(P,λ). The second phase is used to compute the unsupported Pareto solutions by applying a k-best algorithm which computes the k-best Pareto solutions in order of their objective values.
Characterization of aged male BALB/ccenp mice as a model of dementia
Authors: Esquivel Nashelly , García Yenela , Lores Bestraida , Gutiérrez Marivy , Rodríguez Claudio 
Published: March 2020

AbstractDementia is defined as cognitive impairment in more than one cognitive area and leads to an abnormal degree of impairment in the ability to remember past events. Among mice models of dementia the most used strains are SAMP8 and C57BL/6. There is no reference to characterizing a model of dementia in naturally aged mice of the BALB/c strain, or to the minimum age at which these animals can be used. The aim of this study was the characterization of aged male BALB/ccenp mice as a model of dementia from the evaluation of behavioural, pathological and biochemical markers. One hundred and twenty mice were used and 10 of these were analysed from 8 to 9 months of age, and every 4 months, in a comparative way to young control animals from 4 to 5 months. At the age of 12–13 months there was cognitive impairment in the animals from the Y-maze and object recognition tests and this impairment was maintained at 16–17 months of age. An increase in oxidative damage to proteins in the brains of aged animals was also found in relation to young animals; as well as a decrease in the concentration of triglycerides. At the age of 16–17 months, a significant decrease in the size of the thymus and brain was obtained. We consider that it’s a very useful option to use animals 12–13 months of age where there are symptoms of cognitive deficiency, histopathological and biochemical elements characteristic of dementia.
Systematic Review of Privacy-Preserving Distributed Machine Learning From Federated Databases in Health Care
Authors: Zerka Fadila , Barakat Samir , Walsh Sean , Bogowicz Marta , Leijenaar Ralph T. H. , Jochems Arthur , Miraglio Benjamin , Townend David , Lambin Philippe 
Published: March 2020

Big data for health care is one of the potential solutions to deal with the numerous challenges of health care, such as rising cost, aging population, precision medicine, universal health coverage, and the increase of noncommunicable diseases. However, data centralization for big data raises privacy and regulatory concerns. Covered topics include (1) an introduction to privacy of patient data and distributed learning as a potential solution to preserving these data, a description of the legal context for patient data research, and a definition of machine/deep learning concepts; (2) a presentation of the adopted review protocol; (3) a presentation of the search results; and (4) a discussion of the findings, limitations of the review, and future perspectives. Distributed learning from federated databases makes data centralization unnecessary. Distributed algorithms iteratively analyze separate databases, essentially sharing research questions and answers between databases instead of sharing the data. In other words, one can learn from separate and isolated datasets without patient data ever leaving the individual clinical institutes. Distributed learning promises great potential to facilitate big data for medical application, in particular for international consortiums. Our purpose is to review the major implementations of distributed learning in health care.
State of the Art: Toward Improving Outcomes of Lung and Liver Tumor Biopsies in Clinical Trials—A Multidisciplinary Approach
Authors: Levy Elliot B. , Fiel Maria I. , Hamilton Stanley R. , Kleiner David E. , McCall Shannon J. , Schirmacher Peter , Travis William , Kuo Michael D. , Suh Robert D. , Tam Alda L. , Islam Shaheen U. , Ferry-Galow Katherine , Enos Rebecca A. , Doroshow James H. , Makhlouf Hala R. 
Published: March 2020

PURPOSE National Cancer Institute (NCI)–sponsored clinical trial network studies frequently require biopsy specimens for pharmacodynamic and molecular biomarker analyses, including paired pre- and post-treatment samples. The purpose of this meeting of NCI-sponsored investigators was to identify local institutional standard procedures found to ensure quantitative and qualitative specimen adequacy. METHODS NCI convened a conference on best biopsy practices, focusing on the clinical research community. Topics discussed were (1) criteria for specimen adequacy in the personalized medicine era, (2) team-based approaches to ensure specimen adequacy and quality control, and (3) risk considerations relevant to academic and community practitioners and their patients. RESULTS AND RECOMMENDATIONS Key recommendations from the convened consensus panel included (1) establishment of infrastructure for multidisciplinary biopsy teams with a formalized information capture process, (2) maintenance of standard operating procedures with regular team review, (3) optimization of tissue collection and yield methodology, (4) incorporation of needle aspiration and other newer techniques, and (5) commitment of stakeholders to use of guideline documents to increase awareness of best biopsy practices, with the goal of universally improving tumor biopsy practices.
The histogram analysis of apparent diffusion coefficient in differential diagnosis of parotid tumor
Authors: Chen Peiqian , Dong Bing , Zhang Chunye , Tao Xiaofeng , Wang Pingzhong , Zhu Ling 
Published: March 2020

Objectives: Use apparent diffusion coefficient (ADC) histogram to investigate whether the parameters of ADC histogram can distinguish between benign and malignant tumors and further differentiate the tumor subgroups. Methods and materials: This study retrospectively enrolls 161 patients with parotid gland tumors. Histogram parameters including mean, inhomogeneity, skewness, kurtosis and 10th, 25th, 50th, 75th, 90th percentiles are derived from ADC mono-exponential model. Mann–Whitney U test is used to compare the differences between benign and malignant groups. Kruskal–Wallis test with post-hoc Dunn–Bonferroni method is used for subgroup classification, then receiver operating characteristic curve analysis is performed in mean ADC value to obtain the appropriate cutoff values. Results: Except for kurtosis and 90th percentile, there are significant differences in all other ADC parameters between benign and malignant groups. In subgroup classification of benign tumors, there are significant differences in all ADC parameters between pleomorphic adenoma and Warthin’s tumor (area under curve 0.988; sensitivity 93.8%; specificity 94.7%; all ps < 0.05). Pleomorphic adenoma has high value in mean than basal cell adenoma (area under curve 0.819; sensitivity 76.9%; specificity 76.9%; p < 0.05). Basal cell adenoma has high values in mean (area under curve 0.897; sensitivity 92.3%; specificity 78.9%; all ps < 0.05) and 10th, 25th, 50th percentiles than Warthin’s tumor. In subgroup classification of malignant tumors, low-risk parotid carcinomas have higher values than hematolymphoid tumors in mean (area under curve 0.912; sensitivity 84.6%; specificity 100%, all ps < 0.05) and 10th, 25th percentiles. Conclusion: ADC histogram parameters, especially mean and 10th, 25th percentiles, can potentially be an effective indicator for identifying and classifying parotid tumors.
Canopy Temperature Bias from Soil Variability Enhanced at High Temperatures
Authors: DeJonge Kendall C. , Zhang Huihui , Taghvaeian Saleh , Trout Thomas J. 
Published: March 2020

HighlightMaize canopy temperature (Tc) was evaluated among four replicates of seven irrigation treatments.Individual replicates showed Tc bias correlated with soil electroconductivity and increasing Tc.At high Tc values (above 35°C), Tc bias was up to 5.0°C among plots with the same irrigation schedule.ABSTRACT. Maize canopy temperature was monitored on a continuous basis for two growing seasons in a limited-irrigation maize experiment with seven separate irrigation treatments and four replicates of each treatment. Soil electroconductivity (EC) was measured and mapped to quantify the variation in soil texture throughout the plots and was correlated with the average field capacity of the soil (R2 = 0.51). At lower canopy temperatures, indicating little or no water stress, very little difference was observed between replicates within the same treatment. However, at higher temperatures, soil texture had a greater influence on temperature, with soils having lower EC (and therefore lower water-holding capacity) showing more water stress. More specifically, at canopy temperatures above 29°C, the influence of soil texture biased the temperature by up to 2.0°C over the EC range of 16.9 to 40.2 mS m-1; at mean canopy temperatures of 35°C, this bias could be more than 5.0°C between field replicates. Results similar to the continuous infrared thermometry were found using nadir thermal images. This study demonstrates the importance of understanding the potential effects of soil variability on canopy temperature, which could have profound implications for spatially variable field-based management using thermal imaging or similar technologies. Keywords: Canopy temperature, Infrared thermometry, Limited irrigation, Soil variability.
Role of surface passivation in integrated sub-bandgap silicon photodetection
Authors: Gherabli Rivka , Grajower Meir , Shappir Joseph , Mazurski Noa , Wofsy Menachem , Inbar Naor , Khurgin Jacob B. , Levy Uriel 
Published: March 2020

We study experimentally the effect of oxide removal on the sub-bandgap photodetection in silicon waveguides at the telecom wavelength regime. Depassivating the device allows for the enhancement of the quantum efficiency by about 2–3 times. Furthermore, the propagation loss within the device is significantly reduced by the oxide removal. Measuring the device 60 days after the depassivation shows slight differences. We provide a possible explanation for these observations. Clearly, passivation and depassivation play an essential role in the design and the implementation of such sub-bandgap photodetector devices for applications such as on-chip light monitoring.