基于微服务架构的中文作文智能评阅系统研究与应用

中文作文评阅是语文教学中不可或缺的部分,每次考试后教师都面临集中的阅卷压力,同时,结果只以分数给出而导致评阅粒度过粗。在解决人工评阅问题而构建智能评阅系统时,面临着多算法调用、系统响应速度慢等新问题。基于微服务架构研究搭建中文作文智能评阅系统,根据功能划分出多个微服务并独自开发和部署,保障系统的高可用性、高并发性和可扩展性,提高响应速度。经实践运行应用,基于微服务的系统具有良好的性能,取得较好的运行效果。所实现的系统一方面有助于提升中文作文阅卷的粒度和客观性,另一方面又能帮助学生找到写作上的不足,提升学生写作能力,提高语文教学的智能化水平。

Preparation of Superconducting Thin Films of Infinite-Layer Nickelate Nd_(0.8)Sr_(0.2)NiO_(2)

The recent observation of superconductivity in thin films of infinite-layer nickelate Nd_(0.8)Sr_(0.2)NiO_(2) has received considerable attention.Despite the many efforts to understand the superconductivity in infinite-layer nickelates,a consensus on the underlying mechanism for the superconductivity has yet to be reached,partly owing to the challenges with the material synthesis.Here,we report the successful growth of superconducting infinite-layer Nd_(0.8)Sr_(0.2)NiO_(2) films by pulsed laser deposition and soft chemical reduction.The details on the growth process are discussed.

Optical Design and Stray Light Analysis of the Space Infrared Optical System

This article describes a novel configuration design for a re-imaging off-axis catadioptric space infrared optical system,and in order to satisfy the signal noise ratio requirements of the system,the stray light of the system is necessary to analyze and restrain. The optical system with a focal length of 1 200 mm,an entrance pupil diameter of 600 mm,an F-number of 2,a field of view of 3°× 0. 15°,a working wave band of 8 μm-10 μm,and the image quality of the optical system almost approach to diffraction limits in all field of view.Then the mathematical models of stray light are built,and the suppressive structure is established to eliminate the effect of stray light. Finally,TraceP ro is used to analyze and simulate stray light with and without the suppressive structure,and also get the results of the PST curves. The results indicate that appropriate optical system and suppressive structure can highly reduce the stray light of the space infrared optical system.

First record of the genus Stenidius La Ferté-Sénectère(Coleoptera: Anthicidae) with three newly recorded species from China

A newly recorded genus Stenidius LaFerté-Sénectère of Anthicidae and three newly recorded species, namely S. dolosus Kejval, Anthelephia himalayana(Krekich-Strassoldo) and Sapintus anguliceps(LaFerté-Sénectère), are reported from China. Morphological descriptions, photographs and illustrations are given.

Collaborative control of fine particles and ozone required in China for health benefit

PM2.5 concentration declined significantly nationwide,while O3 concentration increased in most regions in China in 2013–2020.Recent evidences proved that peak season O3 is related to increased death risk from non-accidental and respiratory diseases.Based on these new evidences,we estimate excess deaths associated with long-term exposure to ambient PM2.5 and O3 in China following the counterfactual analytic framework from Global Burden Disease.Excess deaths from non-accidental diseases associated with long-term exposure to ambient O3 in China reaches to 579(95%confidential interval(CI):93,990)thousand in 2020,which has been significantly underestimated in previous studies.In addition,the increased excess deaths associated with long-term O3 exposure(234(95%CI:177,282)thousand)in 2013–2020 offset three quarters of the avoided excess deaths(302(95%CI:244,366)thousand)mainly due to PM2.5 exposure reduction.In key regions(the North China Plain,the Yangtze River Delta and the Fen-Wei Plain),the former is even larger than the latter,particularly in 2017–2020.Health benefit of PM2.5 concentration reduction offsets the adverse effects of population growth and aging on excess deaths attributed to PM2.5 exposure.Increase of excess deaths associated with O3 exposure is mainly due to the strong increase of O3 concentration,followed by population aging.Considering the faster population aging process in the future,collaborative control,and faster reduction of PM2.5 and O3 are needed to reduce the associated excess deaths.

Photon counting reconstructive spectrometer combining metasurfaces and superconducting nanowire single-photon detectors

Faint light spectroscopy has many important applications such as fluorescence spectroscopy, lidar, and astronomical observations. However, the long measurement time limits its application to real-time measurement.In this work, a photon counting reconstructive spectrometer combining metasurfaces and superconducting nanowire single-photon detectors is proposed. A prototype device was fabricated on a silicon-on-insulator substrate,and its performance was characterized. Experiment results show that this device supports spectral reconstruction of mono-color lights with a resolution of 2 nm in the wavelength region of 1500–1600 nm. Its detection efficiency is 1.4%–3.2% in this wavelength region. The measurement time required by the photon counting reconstructive spectrometer was also investigated experimentally, showing its potential to be applied in scenarios requiring real-time measurement.

Holography in the invisible. From the thermal infrared to the terahertz waves: outstanding applications and fundamental limits

Since its invention,holography has been mostly applied at visible wavelengths in a variety of applications.Specifically,non-destructive testing of manufactured objects was a driver for developing holographic methods and all related ones based on the speckle pattern recording.One substantial limitation of holographic non-destructive testing is the setup stability requirements directly related to the laser wavelength.This observation has driven some works for 15 years:developing holography at wavelengths much longer than visible ones.In this paper,we will first review researches carried out in the infrared,mostly digital holography at thermal infrared wavelengths around 10 micrometers.We will discuss the advantages of using such wavelengths and show different examples of applications.In nondestructive testing,large wavelengths allow using digital holography in perturbed environments on large objects and measure large deformations,typical of the aerospace domain.Other astonishing applications such as reconstructing scenes through smoke and flames were proposed.When moving further in the spectrum,digital holography with so-called Terahertz waves(up to 3 millimeters wavelength)has also been studied.The main advantage here is that these waves easily penetrate some materials.Therefore,one can envisage Terahertz digital holography to reconstruct the amplitude and phase of visually opaque objects.We review some cases in which Terahertz digital holography has shown potential in biomedical and industrial applications.We will also address some fundamental bottlenecks that prevent fully benefiting from the advantages of digital holography when increasing the wavelength.

Unusual one-way edge state in acoustic gyroscopic continuum

Unusual one-way edge states have been observed in composite structures composed of periodic lattices loaded with gyroscopes.Here, we provide a continuum-mechanics understanding to the one-way edge state by formulating surface state equations of acoustic gyroscopic mediums with Hermite mass density tensor. We discover that the unidirectional edge effect arises from nontrivial off-diagonal components of Hermite densities, which causes the symmetric breaking of surface wave propagation towards forward and backward directions. Theoretical predictions on the velocity and decay length of surface waves coincide excellently with numerical simulations. The unidirectional edge state in a two-interface gyroscopic medium is also analyzed.Due to the rotational symmetry in geometry, the unidirectional edge state on one interface is able to prevent itself from the coupling to surface waves on the other interface regardless of the slab thickness. With these anomalous effects, surface waves residing on gyroscopic mediums can flow around the edge defects without back-scatterings, or can be split into two beams of equal energy magnitudes. Our findings may make a bridge that would help to reach the design of non-reciprocal composite materials via an effective medium approach.

Volumetric Imaging of Neural Activity by Light Field Microscopy

Recording the highly diverse and dynamic activities in large populations of neurons in behaving animals is crucial for a better understanding of how the brain works.To meet this challenge,extensive efforts have been devoted to developing functional fluorescent indicators and optical imaging techniques to optically monitor neural activity.Indeed,optical imaging potentially has extremely high throughput due to its non-invasive access to large brain regions and capability to sample neurons at high density,but the readout speed,such as the scanning speed in two-photon scanning microscopy,is often limited by various practical considerations.Among different imaging methods,light field microscopy features a highly parallelized 3D fluorescence imaging scheme and therefore promises a novel and faster strategy for functional imaging of neural activity.Here,we briefly review the working principles of various types of light field microscopes and their recent developments and applications in neuroscience studies.We also discuss strategies and considerations of optimizing light field microscopy for different experimental purposes,with illustrative examples in imaging zebrafish and mouse brains.

Taxonomy of the genus Omonadus Mulsant & Rey(Coleoptera:Anthicidae) from China, with a newly recorded species

The genus Omonadus Mulsant & Rey from China is reviewed, including a newly recorded species, O. cintomus(Marseul) and another four species and subspecies: O. confucii confucii(Marseul), O. confucii addendus(Krekich-Strassoldo), O. floralis(Linnaeus) and O. formicarius formicarius(Goeze). All species checked are redescribed and illustrated. An identification key for this species from China is presented. The study was based on specimens from the Insect Collection, School of Agriculture, Ningxia University(SANXU) and Institute of Zoology, Chinese Academy of Sciences(IZCAS).

Emerging concern on air pollution and health:Trade-off between air pollution exposure and physical activity

Air pollution is a major contributor to the global disease burden,especially affecting respiratory and cardiovascular health.However,physical activity is associated with improved lung function,a slower decline in lung function,and lower mortality.The public is more likely to be exposed to air pollution during outdoor physical activity.However,studies on how long-term and short-term exposure to air pollution interacts with physical activity yield inconsistent results,and the thresholds for air pollution and physical activity remain unclear.Thus,more studies are needed to provide sufficient evidence to guide the public to safely engage in outdoor physical activity when exposed to air pollution.