bluuebunny/crossref_metadata_2025_split huggingface dataset:
Modulation recognition with pre‐denoising convolutional neural network
Authors: Liu Yabo , Liu Yi 
Published: December 2019

Modulation recognition (MR) is an important technology in modern communication systems. Traditional MR methods can be categorised as the maximum likelihood hypothesis, pattern recognition, and deep learning‐based methods. The authors can achieve high‐recognition accuracy when the signal‐to‐noise ratio (SNR) is high. However, their recognition accuracy is greatly reduced when the SNR is low, especially when the SNR is below 0 dB. In order to improve the MR accuracy at low SNRs, they propose a pre‐denoising algorithm, which is used before MR methods. The model of the pre‐denoising algorithm is a fully convolutional neural network, which is similar to an auto‐encoder. They also use residual learning to speed up the training process. Experimental results show that the proposed pre‐denoising algorithm can significantly enhance the SNRs of modulated signals and improve the accuracy of MR methods.
Intra‐pulse modulation radar signal recognition based on CLDN network
Authors: Wei Shunjun , Qu Qizhe , Su Hao , Wang Mou , Shi Jun , Hao Xiaojun 
Published: December 2019

Automatic modulation classification of radar signals, which plays a significant role in both civilian and military applications, is researched in this study through a deep learning network. In this study, a novel network combined a shallow convolution neural network (CNN), long short‐term memory (LSTM) network and deep neural network (DNN) is proposed to recognise six types of radar signals with different signal‐to‐noise ratio (SNR) levels from −14 to 20 dB. First, raw signal sequences in the time domain, frequency domain and autocorrelation domain are as input for a shallow CNN. Then the features extracted by CNN will be the input of LSTM network. Finally, DNNs will output the signal modulation types directly. The simulation results demonstrate that the accuracies in autocorrelation domain are all more than 90% at −6 dB and close to 100% when SNR > −2 dB. The recognition performances of the three domains are compared. Compared with other recognition methods, the proposed method has higher average accuracy and better performance under low SNR condition. The measured results show that the proposed method has achieved high accuracies of common four kinds of measured radar signals.
Unusual Causes of Abdominal Pain after Colonoscopy: A Case Series
Authors: Samsami Dorsa , Sargon Peter , Qazi Baseer , Shapiro Alan 
Published: December 2019

AbstractColonoscopy is a relatively safe procedure with an overall complication rate between 0.2 and 0.35%. Complications do occur, however, including preparation related complications, colonic perforation, postpolypectomy hemorrhage, postpolypectomy coagulation syndrome, and other less-common miscellaneous complications. Abdominal pain is one of the more common complaints that symptomatic patients will present with after a colonoscopy, occurring up to 5% of the time. Although the cause is usually minor and does not require further workup, gastroenterologists are most concerned about perforation and postpolypectomy coagulation syndrome in the setting of severe abdominal pain. However, as gastroenterologists, we must also be cognizant that there may be other less-common causes of the abdominal pain. The four cases presented here illustrate rare presentations of abdominal pain after colonoscopy, consisting of acute diverticulitis, incarcerated umbilical hernia, acute gangrenous cholecystitis, and rupture of the ovarian cyst.
Oral Sulfate Solution versus Polyethylene Glycol as a Single-Day Preparation for Colonoscopy: A Randomized Control Trial
Authors: Shah Bhavik Bharat , Patel Bubun , Goenka Mahesh Kumar 
Published: December 2019

Abstract
Background Colonoscopy is a principal diagnostic tool for most colonic disorders. Adequate bowel preparation is essential for proper visualization of the mucosa. The aim of this study was to compare the tolerability, efficacy, and safety profile of 1 L of oral sulfate solution (OSS) in comparison to 2 L of polyethylene glycol (PEG) solution.
Methods In this single-center prospective study conducted at our institute, patients were randomly assigned to receive either OSS or PEG solutions for colonoscopy preparation. Patients enrolled in either group completed a questionnaire assessing the taste of the solution used, adverse effects, and number of stools passed. Grading of the bowel cleansing quality was done as per Boston Bowel Preparation (BBP) score.
Results Total of 400 patients, with 222 patients in the PEG group and 178 patients in the OSS group, were assessed. In the PEG group, 148 (66.75%) patients were males and in the OSS group 112 (62.9%) patients were males. There was no statistical significance on comparison of the taste as “good” or “bad” in both groups. All the adverse events were mild to moderate in intensity and their frequencies were comparable for both the groups. The OSS group had better bowel preparation as per the BBP score (p = 0.021) and lesser cecal intubation time (p = 0.028).
Conclusion The present study demonstrated that 1 L of OSS is better than the well-established 2 L PEG solution, in terms of bowel preparation and shorter time to cecal intubation.
Anisotropic diffusion creep in postperovskite provides a new model for deformation at the core−mantle boundary
Authors: Dobson David P. , Lindsay-Scott Alexander , Hunt Simon A. , Bailey Edward , Wood Ian G. , Brodholt John P. , Vocadlo Lidunka , Wheeler John 
Published: December 2019

SignificanceEarth’s core−mantle region is an important, but poorly understood, region which drives mantle convection (and hence surface processes) by heat transfer from the core to the mantle. Seismic observations show the complexity of the region, but current geodynamic modeling of lowermost mantle flow is hindered by an incomplete understanding of the rheology of the main mineral, postperovskite. Here we show that postperovskite is strongly anisotropic in diffusion creep and hence will show nonlinear behaviors during deformation, including strain weakening and localization. This will help to explain much of the observed seismic complexity of the core−mantle boundary region.
THE RELATION OF THE SPINAL CORD TO THE SPONTANEOUS LIBERATION OF EPINEPHRIN FROM THE ADRENALS
Authors: Stewart G. N. , Rogoff J. M. 
Published: December 2019

On page 616, Vol. XXVI, No. 5, November 1, 1917, foot-note 2, for Marine, D., and Rogoff, J. M., J. Pharm. and Exp. Therap., 1916-17, ix, 1, read Stewart, G. N., and Rogoff, J. M., J. Pharm. and Exp. Therap., 1917, x, 1.
On page 627, foot-note 4, for Stewart and Rogoff, J. Pharm. and Exp. Therap., 1916-17, ix, 479, read Stewart and Rogoff, J. Pharm. and Exp. Therap., 1916, viii, 479.
ALLERGIC IRRITABILITY
Authors: Lewis Paul A. , Loomis Dorothy 
Published: December 2019

1. The allergic irritability of the guinea pig (capacity of the animal to react to antigenic substances) is increased by infection with Bacillus abortus and a streptococcus, by the dead tubercle bacillus, and by intensive treatment with trypan blue, respectively. The effect of these influences, while definite, is less pronounced than that previously found for infection with the tubercle bacillus. The production of anti-sheep hemolytic amboceptor was used as the test reaction in these cases.
2. The allergic irritability of the guinea pig with reference to anti-typhoid agglutinin is increased by infection with the tubercle bacillus.
3. The allergic irritability of the rabbit with reference to anti-sheep hemolytic amboceptor is increased by an infection of suitable severity with the tubercle bacillus.
4. In the guinea pig the curve of antibody production is complex. Its peculiarities are developed during the production of antityphoid agglutinins as well as that of anti-sheep hemolytic amboceptor. In the latter case injections of antigen subsequent to the first give rise to a curve of production unchanged in form but somewhat affected in the time relations.
5. The effects of infection with Bacillus tuberculosis on allergic irritability with reference to anti-sheep hemolytic amboceptor are operative throughout a course of immunizing treatments. The successive increases due to the cumulative effect of repeated doses of the antigen are developed on a higher level. The end-result is that the animal with increased irritability furnishes more antibody not only in response to the initial injection of antigen as previously described, but an absolute increase over the amount attainable by a comparable number of treatments in series. That portion of the final result contributed by the increase in allergic irritability appears to be no less, and may even in instances be somewhat more than that due to the earlier doses of the specific antigen.
MICROBIC VIRULENCE AND HOST SUSCEPTIBILITY IN PARATYPHOID-ENTERITIDIS INFECTION OF WHITE MICE
Authors: Pritchett Ida W. 
Published: December 2019

In Vol. xliii, No. 2, through an unfortunate oversight, the scale along the ordinate was omitted from Text-fig. 1, between pages 146 and 147, as originally printed. The accompanying slip is arranged to be pasted along the left side of Text-fig. 1. The arrow at the top of the slip should be so placed as to be a continuation of the upper border of the chart.
From the scale given in this slip the relative values of the curves shown in Text-fig. 2 (page 148) can be easily determined, since this is merely an enlarged and somewhat compressed portion from the larger text-figure.
See PDF for Structure
A QUANTITATIVE THEORY OF THE PRECIPITIN REACTION
Authors: Heidelberger Michael , Kendall Forrest E. 
Published: December 2019

Page 702, at the bottom of the 3rd column of Table II, for 0.36, read 0.26. This change necessitates the following correction also.
Page 707, 3rd line from the top, for the entire amount, read much.
Page 715, 9th line from the top, for actually occurs, read occurs to a great extent. 12th line from the top, for was 0.36 mg., and precisely this amount was, read was 0.36 mg. without deducting about 0.1 mg. for solubility, whereas 0.26 mg. was.
SOME CONSTITUENTS OF ELEMENTARY BODIES OF VACCINIA
Authors: Smadel Joseph E. , Lavin George I. , Dubos René J. 
Published: December 2019

Page 388, for the two sentences beginning with line 10, the following sentences should be substituted.
The former type has been found in preparations of a number of plant viruses (30) and of the agent of Rous' sarcoma (31). Although nucleoproteins have been reported in several types of bacteriophage (32), the importance of phosphorus-containing componds in one of these agents has been recently questioned (33).
THE DARK ADAPTATION OF THE EYE OF LIMULUS, AS MANIFESTED BY ITS ELECTRIC RESPONSE TO ILLUMINATION
Authors: Hartline H. Keffer 
Published: December 2019

On page 387, Vol. 13, No. 3, January 20, 1930, the numbers in the last column of Table 1 should be divided by 10 to give the true values of k'.
In the next to the last line, under Table 1, for value of C = 0.337 read value of C = –0.337.
THEORY AND MEASUREMENT OF VISUAL MECHANISMS
Authors: Crozier W. J. , Wolf Ernst 
Published: December 2019

In Vol. 27, No. 5, May 20, 1944, page 403, in the eighth line from the bottom of the page, the comma after "intensity" should be a semicolon.
On page 413, in the second formula from the bottom of the page, for
See PDF for Equation
read
See PDF for Equation
On the same page, formula 2 should read
See PDF for Equation
On page 414, line 3, at the end of the line add "or" to read "of the level of I or of F."
On page 422, in the first line below the figure legend, for "illuminate" read "illuminated."
On page 430, line 22, for "lighteb dars" read "lighted bars."
CONTRIBUTION TO THE THEORY OF PERMEABILITY OF MEMBRANES FOR ELECTROLYTES
Authors: Michaelis L. 
Published: December 2019

On page 39, Vol. viii, No. 2, September 18, 1925, multiply the right-hand side of formula (2) by the factor
See PDF for Equation.
On page 44, immediately after formula (1) the text should be continued as follows:
Let us suppose a membrane to be separated by two solutions of KCl of different concentrations K1 and K2 and these concentrations and the corresponding concentrations of K+ within the membrane, which are in equilibrium with the outside solutions, to be so high that the H+ ions may be neglected. When a small electric current flows across the system, practically the K+ ions alone are transferred and that in a reversible manner. Therefore the total P.D. is practically
See PDF for Equation
This P.D. is composed of two P.D.'s at the boundaries and the diffusion potential within the membrane. Suppose the immobility of the anions is not absolute but only relative as compared with the mobility of the cations, KCl would gradually penetrate into the membrane to equal concentration with the outside solution on either side and no boundary potential would be established. In this case the diffusion P.D. within the membrane is the only P.D., amounting to
See PDF for Equation
but, V being practically = 0, it would result that
See PDF for Equation
So the definitive result is the same as in the former case.
Now cancel the printed text as far as page 48, line 13 from the top of the page, but retain Fig. 1.
On page 50, line 19 from the top of the page, cancel the sentence beginning with the word But and ending with the words of the chain.
Characterization of solution-grown and sputtered Inx(O,S)y buffer layers in Cu(In,Ga)Se2 solar cells by analytical TEM
Authors: Jin Xiaowei , Schneider Reinhard , Popescu Radian , Hariskos Dimitrios , Witte Wolfram , Powalla Michael , Gerthsen Dagmar 
Published: December 2019

Abstract
Cu(In,Ga)Se2 thin-film solar cells were fabricated with In
x
(O,S)
y
as buffer material, where the buffer was deposited by either solution growth or radio-frequency sputtering. To elucidate the influence of the particular deposition technique on the properties of the In
x
(O,S)
y
layers, their structural peculiarities were characterized by high-resolution transmission electron microscopy (TEM) and nanobeam electron diffraction. Energy-dispersive x-ray spectroscopy in combination with scanning TEM was used for chemical analysis of the interfacial regions between Cu(In,Ga)Se2 absorber and In
x
(O,S)
y
layer as well as of the buffer itself. In general, the solution-grown and sputtered In
x
(O,S)
y
layers show a nanocrystalline structure. In both types of In
x
(O,S)
y
buffer layers, crystalline phases of tetragonal In2S3 and cubic In2O3 were detected. In addition, there are hints for the formation of a Cu-containing phase, e.g. hexagonal CuS in the sputtered In
x
(O,S)
y
layer. Moreover, there are also distinct differences in the chemical composition of the two analyzed In
x
(O,S)
y
layers, namely in the solution-grown In
x
(O,S)
y
buffer layer the oxygen content is considerably higher than in the sputtered In
x
(O,S)
y
layer.
Acoustic graphene network loaded with Helmholtz resonators: a first-principle modeling, Dirac cones, edge and interface waves
Authors: Zheng Li-Yang , Achilleos Vassos , Chen Ze-Guo , Richoux Olivier , Theocharis Georgios , Wu Ying , Mei Jun , Felix Simon , Tournat Vincent , Pagneux Vincent 
Published: December 2019

Abstract
In this work, we study the propagation of sound waves in a honeycomb waveguide network loaded with Helmholtz resonators (HRs). By using a plane wave approximation in each waveguide we obtain a first-principle modeling of the network, which is an exact mapping to the graphene tight-binding Hamiltonian. We show that additional Dirac points appear in the band diagram when HRs are introduced at the network nodes. It allows to break the inversion (sub-lattice) symmetry by tuning the resonators, leading to the appearence of edge modes that reflect the configuration of the zigzag boundaries. Besides, the dimerization of the resonators also permits the formation of interface modes located in the band gap, and these modes are found to be robust against symmetry preserving defects. Our results and the proposed networks reveal the additional degree of freedom bestowed by the local resonance in tuning the properties of not only acoustical graphene-like structures but also of more complex systems.
Quantum synchronisation enabled by dynamical symmetries and dissipation
Authors: Tindall J , Sánchez Muñoz C , Buča B , Jaksch D 
Published: December 2019

Abstract
In nature, instances of synchronisation abound across a diverse range of environments. In the quantum regime, however, synchronisation is typically observed by identifying an appropriate parameter regime in a specific system. In this work we show that this need not be the case, identifying conditions which, when satisfied, guarantee that the individual constituents of a generic open quantum system will undergo completely synchronous limit cycles which are, to first order, robust to symmetry-breaking perturbations. We then describe how these conditions can be satisfied by the interplay between several elements: interactions, local dephasing and the presence of a strong dynamical symmetry—an operator which guarantees long-time non-stationary dynamics. These elements cause the formation of entanglement and off-diagonal long-range order which drive the synchronised response of the system. To illustrate these ideas we present two central examples: a chain of quadratically dephased spin-1s and the many-body charge-dephased Hubbard model. In both cases perfect phase-locking occurs throughout the system, regardless of the specific microscopic parameters or initial states. Furthermore, when these systems are perturbed, their nonlinear responses elicit long-lived signatures of both phase and frequency-locking.
Mechanical and free vibration properties of clamshell particles/polyester composites
Authors: Mostafa Nawras H , Hunain Mustafa Baqir , Khafaji Salwan Obaid Waheed 
Published: December 2019

Abstract
In this work, an experimental investigation was implemented to identify the effect of adding clamshell powder (CSP) into the polyester matrix on the tensile and impact properties along with vibration characteristics of the particulate composites towards using eco-friendly reinforcement phase. Different weight ratios of clamshell powder, ranged from 0 to 20 wt%, were loaded into the polyester resin with particle sizes ranged from 25 to 75 μm. Tensile, Charpy impact and free vibration tests were performed to the specimens fabricated from the neat polyester and CSP-filled polyester. The results showed that the inclusion of CSP into the polyester matrix could improve the tensile modulus of the polyester up to 50% when the CSP weight ratio equals to 12%. Meanwhile, the strain-to-failure, tensile and impact strengths showed decreasing trends with increasing the CSP filler content owing to the weak adhesion (bonding) strength between CSP and the polyester matrix. Maximum improvements in the fundamental natural frequency and damping ratio of CSP-filled polyester were 24% (at 12 wt% of CSP) and 21% (at 8 wt% of CSP), respectively. Based on the results, the clamshell powder could be used as a very cheap bio-filler material within the polyester matrix if the high stiffness composites with improved damping properties are required.
Atomistic behavior of nanoporous carbon nanotube-aluminum composite under compressive loading
Authors: Suk Myung Eun 
Published: December 2019

Abstract
Metal matrix nanocomposites have been actively studied to discover the characteristics of a new class of materials. In the present study, metal matrix nanocomposites are investigated using molecular dynamics simulations of the compressive behavior of nanoporous carbon nanotube (CNT)-aluminum (Al) composites that have a density of approximately 77% to that of pure Al. The weight-reduced nanocomposites exhibited an enhanced Young’s modulus of 138%, and a compressive strength degraded by 13% compared with pure Al. Through stress decomposition into CNT and Al constituents, it was observed that the Young’s modulus was enhanced due to the high stiffness of the CNTs; further, the reduced strength was primarily due to the early failure strain. The effects of CNT volume fractions and sizes are further analyzed using the rule of mixture, which is modified by the interphase area definition. In addition, the atomistic details of the structure and stress revealed a buckling behavior in the CNT as well as a massive slip behavior in the Al matrix during plastic deformation. The results presented in this study will have implications in the design and development of metal matrix nanocomposites for applications in high-performance lightweight materials.
Multi-band Superconductivity in a misfit layered compound (SnSe)1.16(NbSe2)2
Authors: Bai Hua , Qiao Lei , Li Miaocong , Ma Jiang , Yang Xiaohui , Li Yupeng , Tao Qian , Xu Zhu-An 
Published: December 2019

Abstract
We report the discovery of superconductivity with T
c of about 5.3 K in a new misfit layered compound (SnSe)1.16(NbSe2)2. High resolution transmission electron microscopy and selected area electron diffraction of the single-crystalline samples clearly reveal the misfit layered structure. Based on the McMillan equation, the electron-phonon coupling constant λ

e – ph
is estimated to be about 0.96, which is close to strong coupling range. The estimated out-of-plane and in-plane upper critical magnetic fields are 8.9 T and 15.5 T respectively.

H

c
2

ab

(0) is 1.74 times the value of Pauli paramagnetic limit. Moreover, there is a positive curvature in the

H

c
2

(
T
)

curves near T

c
, indicating a feature of multi-band superconductivity. The temperature dependence of specific-heat in superconducting state can be fit by a two-band BCS model, which confirms further the multi-band superconductivity. The reduced charge transfer between the two subsystems may account for the enhanced T
c comparing with (SnSe)1.16(NbSe2).
Numerical investigation of graphene-based metamaterial microstrip radiating structure
Authors: Dhasarathan Vigneswaran , Bilakhiya Nizam , Parmar Juveriya , Ladumor Mayurkumar , Patel Shobhit K 
Published: December 2019

Abstract
Recent advancement in antenna technology is directed to achieve reconfiguration of radiating structure parameters. In this paper, we propose graphene-based reconfigurable and high gain microstrip radiating structure for multiband wireless communication applications. The circular copper patch is used as a radiating element of the radiating structure. Graphene layer with circular holes is applied to this microstrip based radiating structure to tune the radiating structure parameters. The radiating structure is stacked with superstrate layers to improve the gain of the design. Frequency reconfiguration and gain enhancement are achieved by varying the chemical potential of graphene. Radiating structure analysis in terms of the reflection coefficient, radiation pattern and gain polar plot is obtained. The proposed reconfigurable radiating structure can be used for L and S-band applications.