bluuebunny/crossref_metadata_2025_split huggingface dataset:
Knowledge, Attitude, Awareness, and Perceptions among Physicians toward Antibiotic Resistance in Hospitals in South Palestine
Authors: Jabbarin Hussein , Nawajah Inad , Hejaz Hatem A. 
Published: March 2023

Abstract
Background Antibiotic resistance is a global problem, and the World Health Organization has made this problem one of its priorities for solving. Therefore, a survey was carried out to investigate the knowledge, attitude, awareness, and perceptions of antibiotic resistance among physicians and to assess the correlation between the knowledge of antibiotic resistance and their years of experience in some Palestinian hospitals.
Methods This was a cross-sectional study that targeted physicians who are working in different healthcare facilities in Hebron and Bethlehem governorates. We used a questionnaire for data collection. The questionnaire consists of 42 questions to measure the knowledge, attitudes, awareness, and perceptions of antibiotic use and resistance.
Results The response rate was 91.33% (137 of 150 physicians completed the questionnaire). The participants' ages ranged from 25 to 56 years, and the majority were males (n = 116, 84.7%) working in governmental hospitals (n = 83, 60.6%). Of physicians, 69.3% (n = 95) perceived antibiotic resistance as a very important worldwide problem, while 54.7% (n = 75) perceived a very important problem in the country, 54.0% (n = 74) a very important problem in their hospital, and 59.1% (n = 81) a very important problem in their departments. Methicillin-resistant Staphylococcus aureus was the most known antibiotic-resistant bacteria followed by extended-spectrum beta-lactamases. Only 47 physicians (34.3%) think that antibiotics are not used appropriately in their department. Respondents' physicians showed that the development of antibiotic resistance was due to various factors that include self-medication n= (92, 67.2%), overuse of antibiotics (n = 83, 60.6%), and uncompleted treatment (n= 87, 63.5). Senior specialists/consultants were found to be more knowledgeable about antibiotic resistance.
Conclusion In our survey, physicians showed variable knowledge and perceptions of antibiotic resistance. Introducing educational programs is necessary to improve their understanding and perceptions of antibiotic resistance, as well as their attitude toward antibiotic use.
Idiopathic Isolated Right Ventricular Cardiomyopathy: A Rare Case Report
Authors: Mohanty Vivek , Sharma Shubham Kumar , Goswami Sourabh , Gudhage Rahul , Deora Surender 
Published: March 2023

AbstractIdiopathic isolated right ventricular cardiomyopathy is an extremely rare cause of right ventricular failure. Here, we report a case of 65-year-old male presented with chief complaints of dyspnea, fatigue, and bilateral pedal edema for the last 6 months. On clinical evaluation, grade II/III pansystolic murmur was present in left parasternal area. Investigations and imaging revealed dilated right atrium and ventricle with normal pulmonary artery pressure without any etiology. Magnetic resonance imaging ruled out other common causes of right ventricular cardiomyopathy; thus, the patient was diagnosed as a case of idiopathic isolated right ventricular cardiomyopathy that is a diagnosis of exclusion.
The perception of plastic surgery during the COVID-19 pandemic—an analysis of online search patterns on a medical information platform
Authors: Nischwitz Sebastian P. , Jung Janis , Luze Hanna , Popp Daniel , Zrim Robert , Rappl Thomas , Kamolz Lars-Peter , Spendel Stephan 
Published: March 2023

AbstractIn 2020, the COVID-19 pandemic impacted global life and transitioned economies and societal perceptions of life as we knew it. Professional and social life mostly ground to a nadir during the first lockdown in Europe in March. As a consequence, measures aimed at preventing the spread of the virus were established in medical facilities also and elective plastic surgery procedures were temporarily suspended in our clinic and others. A majority of the population, including those potentially contemplating plastic surgery procedures, spent most of their time at home with ample time available to research information about surgical procedures and other topics online. This investigation analyzes the relevance of plastic surgery during the pandemic on the basis of online search behavior patterns. Online traffic data from the online platform http://www.mooci.org were extracted using Google Analytics over a period of 6 months. The parameters analyzed were: pageviews, session duration, and bounce rate. Additionally, differentiation by areas of interest has been obtained. The data were compared and analyzed before and after the beginning of the first hard lockdown in Austria, Germany, and Switzerland. There were no significant differences in regard to pageviews and session duration when comparing time points before and after the beginning of the hard lockdown. The bounce rate exhibited a significant decrease after the beginning of the lockdown, implying a more conscious search for information and greater absorption and retention. There was no difference that could conclusively be attributed to the pandemic in terms of specific areas of interest researched. Society’s demand for information about plastic-surgical procedures continues to be steadily prevalent—despite, or even in particular, during a global pandemic. Providing reliable and readily available information about plastic surgery procedures is an important component of a functioning doctor–patient relationship and informed consent. This information may reflect society’s increased interest in plastic surgery during the pandemic, or be simply reflective of more spare time at hand to allow for such research. Further studies should investigate the relevance of elective procedures over the entire course of the pandemic.
Study on energy scaling of 1.3 μm dual-wavelength Nd:YAG laser
Authors: Chang Jin-Quan , Bian Qi , Bo Yong , Peng Qin-Jun 
Published: March 2023

Abstract
We demonstrate a high-energy dual-wavelength Nd:YAG solid-state laser emitting at 1.3 μm. To scale up the laser output power and beam quality, the resonator has a two-rod configuration side-pumped by a quasi-continuous wave, pulsed laser diode instead of a continuous wave format, so as to mitigate the thermal effect in the laser crystal effectively. Two acousto-optic Q-switches are adopted to obtain higher peak power. By precise coating on the cavity mirrors, simultaneous oscillation at 1319 and 1338 nm is achieved with the intension ratio of near 59:50. The oscillator operates at a repetition frequency of 400 Hz and pulse duration of 117 ns, delivering a maximum average output power of 49.4 W with an optical-to-optical conversion efficiency of 12%. The calculated peak power and pulse energy are up to 1.06 MW and 123.5 mJ, respectively, which is, to our best knowledge, the highest energy Nd:YAG laser in the 1.3 μm region.
Plugging System of Rf Connector Based on the Fusion of Monocular and Binocular Vision
Authors: Lu Zhengwei , Lu Yonghua , Yang Haibo , Leng Di , Gao Cheng , Liu Xinyu 
Published: March 2023

Abstract
Aiming at the problems of poor consistency and low efficiency in the manual plugging test of 5G RF(Radio Frequency) device, an intelligent plugging system based on robotic manipulation and machine vision is proposed. The mathematical model of the RF device is firstly established. The pixel size calibration and hand-in-eye calibration algorithms are then designed. A positioning algorithm is proposed, consisted of monocular vision and binocular vision. The monocular vision is employed to calculate the position information of the 5G RF device, and consequently, the binocular vision facilitates more accurate positioning, which reduces the positioning error between the actual model and the theoretical model and improves the positioning accuracy. In the binocular ranging, this algorithm improves the traditional Census transform by adopting a double cross window and utilizing the median value of the pixels in the window as the reference value, effectively reducing the impact of noise and meanwhile preserving detailed information. The experimental results show that the average absolute error of the coordinate axis X direction is 0.33mm, the average absolute error of the coordinate axis Y direction is 0.46mm, the average absolute error of the coordinate axis Z direction is 0.27mm, and the plugging success rate is 100%.
An Analog Pre-Distortion Waveform Shaping Scheme Based on High-Speed VLC
Authors: Luo Meiling , Yang Chihyung , Han Boxiao , Wang Qifan , Han Dahai 
Published: March 2023

Abstract
We propose an analog pre-distortion waveform shaping scheme based on a high-speed VLC scheme, which generates a non-return-to-zero switch keying (NRZ-OOK) modulated signal shaped by a pre-distortion waveform shaping module through a field-programmable gate array (FPGA) and emitted from the transmitter. Experimental results show that this simple system can fully preserve frequency components, extend system bandwidth up to 250Mhz, and improve the system performance at a communication distance of 3m and LED power of 0.02W.
Detection of Adulteration of Ziziphi Spinosae Semen Based on Near Infrared Hyperspectral Imaging
Authors: Zhao Xin , Liu Xin , Wang Yunpeng , Zhao Zhilei , Wang Xianyou , Lin Yufei , Liu Meichen 
Published: March 2023

Abstract
Based on the near-infrared hyperspectral imaging technology (NIR-HSI) (950-1700 nm), a rapid identification method was proposed for Ziziphi Spinosae Semen (Suanzaoren, SZR) and its three kinds of counterfeits, i.e. Ziziphus mauritiana lam (Lizaoren, LZR), Hovenia dulcis Thunb. (Zhijuzi, ZJZ) and Lens culinaris (Bingdou, BD). According to the proportion of 2:1, by randomly dividing the sample set, 480 samples are taken as the training set and 240 samples are taken as the test set. Five preprocessing methods were used to process the extracted raw spectra from region of interest, and the optimal preprocessing method was selected. The full spectral models were established by using the Grey Wolf Optimizer (GWO-SVM), partial least square discrimination analysis (PLS-DA) and soft independent modeling class analog (SIMCA) algorithms. The best classification results of the full spectrum-based PLS-DA, GWO-SVM and SIMCA models were 0.95, 0.99 and 0.97, respectively. Selecting characteristic wavelength by combining spectral data with Competitive adaptive reweighted sampling (CARS) and Successful projects algorithm (SPA) algorithms. The comparison results showed that the recognition rate of SPA-GWO-SVM and SPA-SIMCA were 0.97. The optimal model was SPA-NON-SIMCA. Finally, according to prediction results of the optimal model, the samples were marked with different colours to obtain the visualization map of SZR with different fake products.
Impulse and Plasma Plume Generated By Ablating Aluminum Target with Nanosecond Laser in Double-Pulse Configuration
Authors: Yu Chenghao , Ye Jifei , Zhou Weijing , Chang Hao , Li Mingyu 
Published: March 2023

Abstract
For laser ablation propulsion, the enhancement of the impulse is very challenging to realize without increasing the laser energy. In this paper, the enhancement of the impulse in vacuum is achieved by laser ablation in double-pulse mode. The impulse produced by irradiating the aluminum target for different energy combinations in double-pulse mode was measured with the torsion pendulum. The plasma plume was observed at the same time by fast photography to analyze the cause of the impulse characteristics. The effect of the energy combinations for double-pulse mode on the ablation impulse was investigated at typical interpulse delay time. When the delay time between the pulses is set to 80 ns, the maximum impulse is increased by approximately 11% compared to that of the single-pulse mode at the same total energy, wherein the energy of the first pulse is 125mJ in total energy of 200mJ. Therefore, the enhancement of the impulse can be achieved by choosing the suitable energy combination in the double-pulse configuration. However, when the time delay is 300ns, the difference in energy combinations has little influence on the impulse. The results reported here provide guidance for the application of laser ablation propulsion in space.
Super-resolution Imaging of Submicron Natural Defects on Optics Component by Structured Illumination Microscopy
Authors: Bai Jinxi , Zhang Lin , Ma Hua , Shi Zhendong , Liu Lijia , Ma Ke , Ren Huan , Chai Liqun 
Published: March 2023

Abstract
We report a super-resolution imaging microscope adopting the spatially structured illumination that is able to providing super-resolution and high signal noise ratio images of submicron defects on the surface and subsurface of optical components in this research. Employing the combination of structured illumination microscopy (SIM) and reflective light scattering (RLS) microscope, RLS-SIM extends the transmission band of optical transfer function of the RLS microscopy, thereby improving resolution and breaking the conventional Rayleigh diffraction limit. With 633 nm illumination light source and 100×/0.8 objective, the reconstructed RLS-SIM image of natural defects on the optics component reveals the lateral limit resolution ~296 nm, a factor of 1.63 than that of the normal bright-field microscopy with the same parameters. Moreover, compared with traditional microscope (bright-field/dark-field) and SEM images, the RLS-SIM images are demonstrated to present the finer structures of submicron digs and scratches formed in the optics manufacturing process which have a good application prospect in the research of damage mechanism of precision optical components and the upgrading of processing technology.
3D Potential Simulation for H2+ ion Under a Strong Laser Field
Authors: Wang Jian , Wang Guiqiu , Wang Shixuan , Yi He , Gao Xin 
Published: March 2023

Abstract
Potential is the most important quantity needed to be concerned in the study of interaction between projectile ion and target. On the one hand, it decides the total interaction course such as ion energy deposition and molecular Coulomb explosion and so on. On the other hand, under a strong laser field, the potential can be influenced by the laser. In this paper, the 3D potential is studied under a strong laser field for a hydrogen molecular ion in Al target. The simulation results show that the 3D potential is weakened by the laser intensity. Such results can provide references for correlated experiments and theoretical study.
High-energy 2.8-μm Ultrashort Pulses Generation in an Er:ZBLAN Fiber Amplifier
Authors: Wu Yongjing , Yao Chuanfei , Yang Linjing , Wang Chao , Wang Xuan , Ren Guochuan , Li Pingxue 
Published: March 2023

Abstract
Compact, high-energy ultrashort pulsed fiber lasers in the 2.8 μm wavelength have attracted extensive interest in many scientific and industrial applications. Here, we demonstrated the generation of μJ-level ultrashort pulses from a quasi-all-fiberized Er:ZBLAN amplifier employing a 2.8-μm frequency-shifted soliton as a seed laser. With backward pumping, the pulse energy was enhanced to 0.282 μJ when the average output power was amplified to 1.023 W. Mechanisms for the generation and amplification of ultrashort pulses were theoretically revealed by numerical simulation, and further cascaded indium fluoride (InF3) fiber to obtain a 4.26-μm redshift soliton numerically. This compact fiber amplification system consisting of frequency-shifted-based seed pulses and fluoride fiber amplifiers will be of practical interest in applications.
Nitrate Measurement in Seawater with a Turbidity Correction Algorithm based on Ultraviolet Spectrophotometry
Authors: Xu Jian , Zhu Xingyue , Zhang Naixin , Yu Kaixiong , Xu Lei , Wu Chi 
Published: March 2023

Abstract
Turbidity usually has a great impact on the actual measurement of the value of nitrate concentrations in the seawater. In this study, a new turbidity correction approach for nitrate concentrations measurement in the seawater based on ultraviolet absorption spectroscopy is presented. Experiments were carried out to prove the improvement of the turbidity correction method with ultraviolet spectroscopy. The orthogonal projections to latent structures (O-PLS) algorithm was chosen to correct the additional information in absorbance caused by turbidity. The experimental results show that the influence of turbidity could be excellently removed. Compared with the standard normalized variate (SNV) transformation, the O-PLS algorithm could better reduce the influence of turbidity on the nitrate absorbance and improve the measurement accuracy in turbid seawater. The linear correlation coefficient (R2) of the prediction results in test samples is 0.9999 and RMSEP is 0.1886 μmol/L.
Protein Concentration Sensor Based on Exceptional Points in Whispering-gallery Microdisks
Authors: Zhang Xuenan , Liu Bin , Zhu Huaye , Wang Fang , Li Shuguang , Cheng Tonglei 
Published: March 2023

Abstract
Protein concentration detection is of great importance for biological research. Research on biosensors continuously always pursues higher sensitivity and interference immunity. If a system at exceptional point is subjected to a small perturbation, the two coupled modes will rapidly shift and split. The feature can be used for ultra-highly sensitive detection. Therefore, this paper proposes a whispering-gallery microdisk sensor at exceptional point that can be used for protein molecule concentration detection. The EP is introduced by a small hole in the solid microdisk. When microfluid containing protein flows through the small hole, the protein molecules will attach to the wall of the hole, resulting in a large complex frequency splitting. Thus, this system is extremely sensitive for protein concentration. Theoretical analysis shows that the sensitivity of the architecture is tens times higher than that of the conventional microcavity sensor.
Research on Quantitative Correlation between Performance and Structure Parameters Fluctuation of InGaAs(P)/InP Gm-APD
Authors: Luo Guoling , Yang Ruiyu , Liu Yong , Zheng Boren , Wang Zeyuan , Jang Xinyan , Liao Kai , Tan Yang 
Published: March 2023

Abstract
A statistics method is proposed to research the quantitative correlation between device performance and structure parameters fluctuation of avalanche photodiode (APD), through theoretical simulation and setting varied structure parameters. The characteristics of InGaAsP/InP APD and InGaAs/InP APD with the same primary structure parameters are discussed, and the quantitative correlation between excess bias fluctuation and structure parameters fluctuation of the two species APDs is concluded. It is revealed that the excess bias of APD is strongly determined by the doping of charge layer, the width of charge layer and multiplication layer, and it is slightly determined by the doping and the width of absorption layer. Moreover, the two species APDs have close response uniformity and technical stability at the same condition of material manufacture and device process.
Research on Digital Testing Technology for Full Surface Defects of Cross scale Heteromorphic Metal Devices
Authors: Liu Lijia , Ma Hua , Bai Jinxi , Shi Zhendong , Zhang lin 
Published: March 2023

Abstract
There are many types of cross scale special-shaped metal components in various fields, and the surface quality (defects) of some key components will affect the device performance and even cause the long-term stability and reliability of the system to decline. The existing manual inspection methods are difficult to accurately quantify and establish a digital traceability database, so it is urgent to study the automatic digital inspection technology of full surface defects. However, most of the devices are curved surfaces with different shapes, large size spans, various types of surface defects and diffuse reflection imaging, and the background of machine vision images is complex, which greatly increases the difficulty of defect detection. Based on the principle of machine vision imaging, this paper designs a long depth of field and low distortion imaging system for curved surfaces. Combined with a flexible scanning motion mechanism with multiple degrees of freedom, this paper studies the technology of complex background defect extraction to realize the full surface defect detection of cross scale special-shaped metal devices.
The frustration-free fully packed loop model
Authors: Zhang Zhao , Schou Røising Henrik 
Published: March 2023

Abstract
We consider a quantum fully packed loop model on the square lattice with a frustration-free projector Hamiltonian and ring-exchange interactions acting on plaquettes. A boundary Hamiltonian is added to favor domain-wall boundary conditions and link ground state properties to the combinatorics and six-vertex model literature. We discuss how the boundary term fractures the Hilbert space into Krylov subspaces, and we prove that the Hamiltonian is ergodic within each subspace, leading to a series of energy-equidistant exact eigenstates in the lower end of the spectrum. Among them we systematically classify both finitely entangled eigenstates and product eigenstates. Using a recursion relation for enumerating half-plane configurations, we compute numerically the exact entanglement entropy of the ground state, confirming area law scaling. Finally, the spectrum is shown to be gapless in the thermodynamic limit with a trial state constructed by adding a twist to the ground state superposition.
Subsystem trace-distances of two random states
Authors: Telles de Miranda Joaquim , Micklitz Tobias 
Published: March 2023

Abstract
We study two-state discrimination in chaotic quantum systems. Assuming that one of two N-qubit pure states has been randomly selected, the probability to correctly identify the selected state from an optimally chosen experiment involving a subset of

N
−

N
B

qubits is given by the trace-distance of the states, with N

B
qubits partially traced out. In the thermodynamic limit

N
→
∞

, the average subsystem trace-distance for random pure states makes a sharp, first order transition from unity to zero at

f
=
1

/

2

, as the fraction

f
=

N
B

/

N

of unmeasured qubits is increased. We analytically calculate the corresponding crossover for finite numbers N of qubits, study how it is affected by the presence of local conservation laws, and test our predictions against exact diagonalization of models for many-body chaos.
BPS surface operators and calibrations
Authors: Drukker Nadav , Trépanier Maxime 
Published: March 2023

Abstract
We present here a careful study of the holographic duals of BPS surface operators in the 6d

theory. Several different classes of surface operators have been recently identified and each class has a specific calibration form—a 3-form in

A
d

S
7

×

S
4

whose pullback to the M2-brane world-volume is equal to the volume form. In all but one class, the appropriate forms are exact, so the action of the M2-brane is easily expressed in terms of boundary data, which is the geometry of the surface. Specifically, for surfaces of vanishing anomaly, it is proportional to the integral of the square of the extrinsic curvature. This can be extended to the case of surfaces with anomalies, by taking the ratio of two surfaces with the same anomaly. This gives a slew of new expectation values at large N in this theory. For one specific class of surface operators, which are Lagrangian submanifolds of

R

4

⊂

R

6

, the structure is far richer and we find that the M2-branes are special Lagrangian submanifold of an appropriate six-dimensional almost Calabi-Yau submanifold of

A
d

S
7

×

S
4

. This allows for an elegant treatment of many such examples.