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Presbyphagia:Dysphagia in the elderly

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World Journal of Clinical Cases 2023年第11期11卷 2363-2373页

作者： hai-yang feng Ping-Ping Zhang Xiao-Wen Wang School of Rehabilitation Medicine Weifang Medical UniversityWeifang 261021Shandong ProvinceChina

Dysphagia has been classified as a“geriatric syndrome”and can lead to serious complications that result in a tremendous burden on population health and healthcare resources worldwide.A characteristic age-related change in swa-llowing is defined as“presbyphagia.”Medical imaging has shown some changes that seriously affect the safety and efficacy of ***,there is a general lack of awareness of the effects of aging on swallowing function and a belief that these changes are part of normal *** review provides an overview of presbyphagia,which has been a neglected health problem for a long *** and awareness of dysphagia in the elderly population should be strengthened,and targeted intervention measures should be actively imple-mented.

关键词： Aging Dysphagia Presbyphagia Geriatric syndromes Swallowing

A Study on Low Frequency Electromagnetic Cyclotron Waves in the Solar Wind

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Research in Astronomy and Astrophysics 2022年第6期22卷 72-80页

作者： hai-feng yang Guo-Qing Zhao Heng-Qiang feng Gilbert Pi Qiang Liu Liang Xiang Qiu-Huan Li Institute of Space Physics Luoyang Normal UniversityLuoyang 471934China Henan Key Laboratory of Electromagnetic Transformation and Detection Luoyang 471934China Faculty of Mathematics and Physics Charles UniversityPrague 12116Czech Republic

According to Wind observations between 2005 and 2015,this paper investigates the dependences of the occurrence of low frequency electromagnetic cyclotron waves(ECWs)on the plasma parameters,the solar cycle,and the orientations of alpha-proton drift velocity(Vd)and the ambient magnetic field(B).The occurrence rates of ECWs with respect to six plasma parameters are *** show that the preferential conditions for generation of left-handed(LH)ECWs are higher proton temperature(Tp),higher proton velocity(Vp),lower proton density(Np),stronger proton temperature anisotropy(T⊥/T‖),higher normalized alpha-proton drift velocity(Vd/VA),and higher normalized alpha particle density(Nα/Np),where T⊥and T‖refer to proton temperatures perpendicular and parallel to B,and VAis the local Alfvén *** right-handed(RH)ECWs,however,the dependences on these plasma parameters are not *** the other hand,it is found that the occurrence rate of LH ECWs increases as the sunspot number decreases,and decreases as the sunspot number *** investigation shows that the increased occurrence rate of LH ECWs is accompanied by an increase in the medians of Vp,Vd/VA,and Nα/*** RH ECWs,the occurrence rate appears to be nearly unrelated to the sunspot number,suggesting a negligible correlation with the solar *** addition,a modified angle is introduced to include the factors of orientation of B(anti-sunward or sunward)and angle between Vdand B,*** is found that the occurrence of LH ECWs has the strong preferential condition that Vdis anti-sunward,while a different situation arises for RH *** results are discussed in the context of the temperature-anisotropy-driven instabilities with the effect of alpha particles.

关键词： (Sun)solar wind-instabilities-waves

Sediment supply mechanism and its influence on hydrocarbon accumulation in the Paleogene of the northern Huanghekou Sag,Bohai Bay Basin,China

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Journal of Palaeogeography 2023年第2期12卷 229-245页

作者： hai-feng yang Geng Qian Meng Zhao Yan-Fei Gao Wen Su Yao-Hui Xu China National Offshore Oil Corporation Tianjin Branch Tianjin300450China

Tectonic activity and sediment supply have significantly affected the rifted basin fillings and hydrocarbon *** Huanghekou Sag in the southeastern Bohai Bay Basin is a hydrocarbon rich sag and was bounded by the Bonan Uplift to the north in the Paleogene,which strongly affected sediment disribution and hydrocarbon accumulation in this *** sediment supply mechanism of the Paleogene parent rocks in this area has not been revealed ***,the Huanghekou Sag is a natural laboratory to reveal the relationship between the tectonic activties and hydrcoarbon accumulations in a rifted *** this study,the tectonic evolution characteristics of the Bonan Uplift in different geological periods are revealed during the main fault depression ***,the direction of the provenance and distribution of the depositional system of the Bonan Uplift are analyzed based on the sedimentary system and mineralogy ***,the sediment supply in the Bonan Uplift in different geological periods has been systematically *** results indicated that sediment supply is the dominant factor of hydrocarbon accumulation in the Paleogene in the Huanghekou *** the Paleocene-Middle Eocene,extensive denudation occurred in the Bonan Uplift,sediments were mainly sourced from the Bonan Uplift in the northern margin of the Huanghekou *** the Late Eocene to Early Oligocene,the Bonan Uplift had a large angle rotation and subsidence due to the strong rifting of the Bozhong Sag in the north,and the sand supply capacity was seriously *** to the different sediment supply in different geological periods,high quality reservoir and cap conditions were formed in the Paleogene in the central and northern parts of the Huanghekou Sag,which is conducive to the accumulation and preservation of oil and gas.

关键词： Huanghekou Sag Tectonic evolution Fault depression period Recovery of parent rock area Reservoir-cap combination

Mesh‑free semi‑quantitative variance underestimation elimination method in Monte Caro algorithm

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Nuclear Science and Techniques 2023年第1期34卷 157-171页

作者： Peng‑Fei Shen Xiao‑Dong Huo Ze‑Guang Li Zeng Shao hai‑feng yang Peng Zhang Kan Wang Department of Engineering Physics Tsinghua UniversityBeijing 100084China China Nuclear Power Engineering Corporation Beijing 100840China

The inter-cycle correlation of fission source distributions(FSDs)in the Monte Carlo power iteration process results in variance underestimation of tallied physical quantities,especially in large local *** study provides a mesh-free semiquantitative variance underestimation elimination method to obtain a credible confidence interval for the tallied *** method comprises two procedures:Estimation and *** FSD inter-cycle correlation length is estimated in the Estimation procedure using the Sliced Wasserstein distance *** batch method was then used in the elimination *** FSD inter-cycle correlation length was proved to be the optimum batch length to eliminate the variance underestimation *** exemplified this method using the OECD sphere array model and 3D PWR BEAVRS *** results showed that the average variance underestimation ratios of local tallies declined from 37 to 87%to within±5%in these models.

关键词： Monte Carlo algorithm Power iteration process Inter-cycle correlation Variance underestimation Sliced Wasserstein distance

Stellar spectra association rule mining method based on the weighted frequent pattern tree

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Research in Astronomy and Astrophysics 2013年第3期13卷 334-342页

作者： Jiang-Hui Cai Xu-Jun Zhao Shi-Wei Sun Ji-Fu Zhang hai-feng yang School of Computer Science and Technology Taiyuan University of Science and Technology National Astronomical Observatories Chinese Academy of Sciences

Effective extraction of data association rules can provide a reliable basis for classification of stellar spectra. The concept of stellar spectrum weighted itemsets and stellar spectrum weighted association rules are introduced, and the weight of a single property in the stellar spectrum is determined by information entropy. On that basis, a method is presented to mine the association rules of a stellar spectrum based on the weighted frequent pattern tree. Important properties of the spectral line are highlighted using this method. At the same time, the waveform of the whole spectrum is taken into account. The experimental results show that the data association rules of a stellar spectrum mined with this method are consistent with the main features of stellar spectral types.

关键词： methods: data analysis -- stars: fundamental parameters -- techniques:spectroscopic -- astronomical data bases: miscellaneous

Lifetime Measurement for 6snp Rydberg States of Barium

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Chinese Physics Letters 2011年第4期28卷 75-78页

作者： SHEN Li WANG Lei yang hai-feng LIU Xiao-Jun LIU Hong-Ping School of Science Tianjin University of TechnologyTianjin 300384 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and MathematicsChinese Academy of SciencesWuhan 430071

We present a simple and efficient method for measuring the atomic lifetimes in order of tens of microseconds and demonstrate it in the lifetime determination of barium Rydberg *** method extracts the lifetime information from the time-of-flight spectrum directly,which is much more efficient than other methods such as the time-delayed field ionization and the traditional laser induced *** lifetimes determined with our method for barium Rydberg 6snp(n=37-59)series are well coincident with the values deduced from the absolute oscillator strengths of barium which were given in the literature[***.B 14(1981)4489,29(1996)655]on experiments.

关键词： Rydberg barium lifetime

An in-depth Exploration of LAMOST Unknown Spectra Based on Density Clustering

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Research in Astronomy and Astrophysics 2023年第5期23卷 52-65页

作者： hai-feng yang Xiao-Na Yin Jiang-Hui Cai Yu-Qing yang A-Li Luo Zhong-Rui Bai Li-Chan Zhou Xu-Jun Zhao Ya-Ling Xun Shanxi Key Laboratory of Big Data Analysis and Parallel Computing Taiyuan University of Science and TechnologyTaiyuan 030024China School of Computer Science and Technology Taiyuan University of Science and TechnologyTaiyuan 030024China School of Computer Science and Technology North University of ChinaTaiyuan 030051China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China

Large sky Area Multi-Object fiber Spectroscopic Telescope(LAMOST) has completed the observation of nearly 20 million celestial objects,including a class of spectra labeled “Unknown.” Besides low signal-to-noise ratio,these spectra often show some anomalous features that do not work well with current *** this paper,a total of 637,889 “Unknown” spectra from LAMOST DR5 are selected,and an unsupervised-based analytical framework of “Unknown” spectra named SA-Frame(Spectra Analysis-Frame) is provided to explore their origins from different *** SA-Frame is composed of three parts:NAPC-Spec clustering,characterization and origin ***,NAPC-Spec(Nonparametric density clustering algorithm for spectra) characterizes different features in the “unknown” spectrum by adjusting the influence space and divergence distance to minimize the effects of noise and high dimensionality,resulting in 13 ***,characteristic extraction and representation of clustering results are carried out based on spectral lines and continuum,where these 13 types are characterized as regular spectra with low S/Ns,splicing problems,suspected galactic emission signals,contamination from city light and un-gregarious type ***,a preliminary analysis of their origins is made from the characteristics of the observational targets,contamination from the sky,and the working status of the *** results would be valuable for improving the overall data quality of large-scale spectral surveys.

关键词： methods data analysis-surveys-techniques spectroscopic-site testing-methods analytical

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基于SCIENCE程序的反射层参数计算

原子能科学技术 2012年第B12期46卷 833-838页

作者：高鑫杨海峰中国核电工程有限公司反应堆工艺研究所北京100840

从法国引进的SCIENCE程序缺少反射层参数计算功能,因而限制了其使用范围。本文基于SCIENCE程序,对其所需的反射层参数构成及其计算进行说明,并给出计算方法。通过对已有APOLLO2-F程序的开发与利用,给出可应用于SMART堆芯计算程序的反射... 详细信息

从法国引进的SCIENCE程序缺少反射层参数计算功能,因而限制了其使用范围。本文基于SCIENCE程序,对其所需的反射层参数构成及其计算进行说明,并给出计算方法。通过对已有APOLLO2-F程序的开发与利用,给出可应用于SMART堆芯计算程序的反射层参数,从而扩大了SCIENCE程序的使用范围。

关键词：反射层围板 SCIENCE程序 APOLLO2-F程序

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《德意志意识形态》:理论与实践的双重意蕴

理论探讨 2018年第1期 53-60页

作者：仰海峰北京大学哲学系

《德意志意识形态》是体现马克思哲学变革的重要文本。在这本著作中,马克思确立了以生产逻辑为基础的历史唯物主义构架,这一构架特别体现在三个方面:一是社会存在决定社会意识,这为我们反思意识形态、实现社会历史批判提供了重要的理论... 详细信息

《德意志意识形态》是体现马克思哲学变革的重要文本。在这本著作中,马克思确立了以生产逻辑为基础的历史唯物主义构架,这一构架特别体现在三个方面:一是社会存在决定社会意识,这为我们反思意识形态、实现社会历史批判提供了重要的理论基础;二是生产力的发展推动着社会历史的发展,特别是历史向世界历史转变,这为我们认识当代社会的走向,特别是全球化时代的社会走向提供了方法论指导;三是在生产力发展与世界历史格局的基础上,实现共产主义,这为社会发展确立了方向。重读《德意志意识形态》,不仅需要展现马克思哲学变革的内在逻辑,还要展现这一文本的历史意义。

关键词：《德意志意识形态》历史唯物主义理论实践