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Acta Mathematicae Applicatae Sinica 2024年第3期40卷 823-839页

作者： Kai-ming YANG Yong-jiang guo School of Science Beijing University of Posts and TelecommunicationsBeijing 100876China

For a 2-station and 3-class reentrant line under first-buffer first-served(FBFS)service discipline in light traffic,we firstly construct the strong approximations for performance measures including the queue length,workload,busy time and idle time *** on the obtained strong approximations,we use a strong approximation method to find all the law of the iterated logarithms(LILs)for the above four performance measures,which are expressed as some functions of system parameters:means and variances of interarrival and service times,and characterize the fluctuations around their fluid approximations.

关键词： reentrant line queueing network FBFS service discipline strong approximation LIL Brownian motion

Variability Analysis for a Two-station Queueing Network in Heavy Traffic with Arrival Processes Driven by Queues

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Acta Mathematicae Applicatae Sinica 2024年第2期40卷 445-466页

作者： Jian CAO Yong-jiang guo Kai-ming YANG School of Science Beijing University of Posts and TelecommunicationsBeijing 100876China

The law of the iterated logarithm(LIL)for the performance measures of a two-station queueing network with arrivals modulated by independent queues is developed by a strong approximation *** convenience,two arrival processes modulated by queues comprise the external system,all others are belong to the internal *** is well known that the exogenous arrival has a great influence on the asymptotic variability of performance measures in *** the considered queueing network in heavy traffic,we get all the LILs for the queue length,workload,busy time,idle time and departure processes,and present them by some simple functions of the primitive *** LILs tell us some interesting insights,such as,the LILs of busy and idle times are zero and they reflect a small variability around their fluid approximations,the LIL of departure has nothing to do with the arrival process,both of the two phenomena well explain the service station’s situation of being busy all the *** external system shows us a distinguishing effect on the performance measures:an underloaded(overloaded,critically loaded)external system affects the internal system through its arrival(departure,arrival and departure together).In addition,we also get the strong approximation of the network as an auxiliary result.

关键词： two-station queueing network the law of the iterated logarithm(LIL) strong approximation fluid approximation

Translocation of a fish spike from the pharynx to the thyroid gland:A case report

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World Journal of Clinical Cases 2024年第7期12卷 1365-1370页

作者： Deng Li Wan-Ting Zeng Jian-guo jiang Ji-Chuan Chen Department of Otolaryngology Head and Neck Surgery Army Medical Center of PLAChongqing 400042China

BACKGROUND A fish spike stuck in the throat is a common ear,nose,and throat(ENT)***,it is very rare for a fish spike to reach the thyroid tissue through the throat,which is very dangerous and can lead to pharyngeal fistula,cervical abscess,mediastinal abscess,and thyroid *** and timely management can help reduce complications,especially in elderly *** SUMMARY In the case presented here,the causative factor was dentures,but improper management aggravated the *** the case presented here,an elderly woman with a history of accidentally swallowing fish bones for 20 d had a sensation of foreign bodies in her ***,computed tomography(CT)of the neck showed that the left side of the thyroid gland had a dense shadow in the form of a *** If a fishbone foreign body is not visible during endoscopic examination but the patient has significant symptoms,the surgeon should be aware that the fishbone may be lodged in the *** avoid a misdiagnosis,ultrasound,CT,and other tests can be used to clarify the diagnosis.T The first step in treating a fish bone in the thyroid gland is to determine the position of the foreign body and the extent of the infection,and to develop a personalized surgical plan for its *** the same time,scientific information should be made available to the general public so that people know that if a fish bone is accidentally lodged,they should not force it to be swallowed or be spit out by inducing vomiting,which are incorrect methods and may aggravate the condition or even cause it to migrate outside the cavity,leading to serious complications,as in this reported case.

关键词： Fish spike Thyroid Pharynx Foreign body migration Case report

Carbon nanofibers embedded with Fe-Co alloy nanoparticles via electrospinning as lightweight high-performance electromagnetic wave absorbers

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Rare Metals 2024年第6期43卷 2769-2783页

作者： Wen-Jun Cai Jian-guo jiang Zi-Dong Zhang Zi-Xuan Liu Lu-JieZhang Zhen-Kun Long Ke Bi Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) Shandong UniversityJinan 250061China School of Materials Science and Engineering Shandong UniversityJinan 250061China Energy Institute Qilu University of Technology(Shandong Academy of Sciences)Jinan 250014China State Key Laboratory of Information Photonics and Optical Communications School of ScienceBeijing University of Posts and TelecommunicationsBeijing 100876China

As a lot of electromagnetic pollution and interference issues have emerged,to overcome electromagnetic interference,prevent electromagnetic hazards,and develop new high-performance electromagnetic wave(EMW)absorbers have become a significant task in the field of materials *** this paper,a three-dimensional(3D)carbon nanofibers network with core-shell structure,embedded with varied molar ratios of iron and cobalt(4:0,3:1,2:2,1:3,0:4),was effectively synthesized(Fe/Co@C-CNFs)via *** phase,microstructure,magnetic and EMW absorption properties were *** is discovered that Fe/Co@C-CNFs doped with iron:cobalt=1:1 have excellent EMW absorption *** the matching thickness is 1.08 mm,the minimum reflection loss(RL)value is-18.66 dB,while the maximum effective absorption bandwidth(EAB)reaches 4.2 GHz(13.9-18 GHz)at a thickness of 1.22 *** is owing to the absorbers'superior impedance matching and multiple reflections as well as the conductivity,dielectric,and magnetic losses of carbon nanofibers embedded with Fe-Co alloy *** addition,the radar cross section(RCS)of the absorbers has been calculated by CST Studio Suite,showing that the absorbing coating can effectively reduce the RCS at various angles,especially for Fe/Co@C-CNFs doped with iron:cobalt=1:*** findings not only provide new insights for the preparation of light-weight and high-performance electromagnetic wave absorbers,but also contribute to energy storage and conversion.

关键词： Electromagnetic wave(EMW)absorbers Fe/Co@C-CNFs Core-shell structure EMW absorbing mechanism Radar cross section(RCS)

Central cell: the key to determine persistent pollen tube attraction or termination

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Science China Life Sciences 2024年第09期 2030-2032页

作者： jiang-guo Meng Shi-Zhen Li Hong-Ju Li Center for Developmental Biology Institute of Genetics and Developmental Biology Chinese Academy of Sciences Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation Integrative Science Center of Germplasm Creation Western China (Chongqing) Science City School of Life SciencesSouthwest University Key Laboratory of Seed Innovation Institute of Genetics and Developmental Biology Chinese Academy of Sciences Center for Molecular Agrobiology Institute of Genetics and Developmental Biology Chinese Academy of Sciences

Most eukaryotic species depend on sexual reproduction, characterized by fertilization, to produce a new individual. This process requires the transfer of sperm(male gamete), containing half of the genetic information, from the male to the egg cell(female gamete), which holds half of the maternal genome, within the female reproductive organs. Various strategies have been evolved to ensure fertilization success in plants.

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Bone marrow edema in a postpartum female following ankle sprain: a case report

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World Journal of Emergency Medicine 2024年第4期15卷 325-327页

作者： Peng Zhang Junjie Zhang Peng Chen Jianjing Lin jiang guo Weixuan Liu Zhiwen Luo Qing Wang Xintao Zhang Department of Sports Medicine Peking University Shenzhen HospitalShenzhen 518000China Department of Sports Medicine Huashan HospitalFudan UniversityShanghai 200040China Department of Orthopaedics Kunshan Hospital of Traditional Chinese MedicineKunshan 215300China

Bone marrow edema(BME)is characterized by an accumulation of interstitial fluid within the bone marrow,the cancellous,hematopoietic compartment within bones.[1]BME is divided into two principal categories:idiopathic or primary BME,with an unknown etiology,and secondary BME,which occurs as a result of an identifiable underlying pathology.[2]Although the prevalence of BME is not limited to specific demographic parameters,it shows a predilection for males or individuals assigned male at birth,predominantly aged between the ages of 30 and 60 years,especially in cases of bone marrow edema syndrome(BMES),a rare idiopathic variant.[3]The etiological spectrum of BME is diverse,including oncological entities(such as acute myeloid leukemia and osteosarcoma),degenerative diseases(such as osteoarthritis),infectious processes(osteomyelitis),ischemic conditions(avascular necrosis),metabolic dysfunctions(osteoporosis),inflammatory disorders(rheumatoid arthritis),and traumatic injuries(such as stress fractures).[1,2]Clinically,BME primarily manifests as localized pain,often accompanied by joint effusion and warmth near the affected *** protocols typically include physical examination,serological assays,bone marrow biopsies,dual-energy X-ray absorptiometry(DEXA)scans,magnetic resonance imaging(MRI),and ultrasonography,with computed tomography(CT)scans and radiographs being less effective.

关键词： edema injuries female

语言相对论与认知语言学:语言—思维相关性的两种立场

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外语学刊 2024年第2期 92-97页

作者：蒋国辉黑龙江大学哈尔滨150080

语言和思维、语言和人能够认识的世界有什么相关性,是认知语言学和语言相对论都在关注的研究领域。只是这两个理论对这种相关性的解释,是对立的。认知语言学认为概念在语言之外形成,语言只是表达已经形成的概念;语言相对论则认为,概念... 详细信息

语言和思维、语言和人能够认识的世界有什么相关性,是认知语言学和语言相对论都在关注的研究领域。只是这两个理论对这种相关性的解释,是对立的。认知语言学认为概念在语言之外形成,语言只是表达已经形成的概念;语言相对论则认为,概念只能在语言中形成。在没有大脑神经科学直观实验数据作出最终检验时,这两种解释都不过是假说。在这个前提下,将它们放在一起对比研究,我们至少可以比较这两种理论的观察充分性和描写充分性。

关键词：认知语言学语言相对论思维语言范畴假说

电子税务发展与政府审计质量提升:来自金税三期准自然实验的证据

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审计与经济研究 2024年第2期39卷 1-10页

作者：赵放蒋国梁徐熠吉林大学中国国有经济研究中心吉林长春130012 吉林大学经济学院吉林长春130012

将国家金税三期工程作为准自然实验,运用双重差分模型、分位数回归模型等实证探究了电子税务发展对政府审计质量的影响。研究结果表明,电子税务发展有助于提升政府审计成果转化率、加大审计查处力度、提高审计落实质量,进而实现了政府... 详细信息

将国家金税三期工程作为准自然实验,运用双重差分模型、分位数回归模型等实证探究了电子税务发展对政府审计质量的影响。研究结果表明,电子税务发展有助于提升政府审计成果转化率、加大审计查处力度、提高审计落实质量,进而实现了政府审计质量的全面提升。异质性分析发现,从区位特征来看,电子税务发展对东部地区政府审计质量的提升效果更强,对中西部地区政府审计质量的提升效果较弱;从政府财政压力来看,电子税务发展对政府财政压力较小地区政府审计成果转化率和审计查处力度的促进效果更强,而对政府财政压力较大地区政府审计落实质量的促进效果更强。

关键词：电子税务政府审计审计质量金税三期双重差分空间异质性

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保证保险代位求偿权的法律适用研究

保险研究 2024年第7期 114-127页

作者：钱玉文郭江雪江南大学法学院

保证保险代位求偿权以损失补偿原则与公平原则为核心依据，实质是法定的债权转移。当同一项债务上既有保证保险人又有混合担保人时，二者的履行顺位及履行规则设计如下：当事人之间有约定的从约定；无约定或者约定不明确的，被保险人同... 详细信息

保证保险代位求偿权以损失补偿原则与公平原则为核心依据，实质是法定的债权转移。当同一项债务上既有保证保险人又有混合担保人时，二者的履行顺位及履行规则设计如下：当事人之间有约定的从约定；无约定或者约定不明确的，被保险人同时享有保险索赔权与担保权。被保险人先向保险人主张时，保险人承担保险责任后依《保险法》第60条和《民法典》第547条可向借款人及其混合担保人行使代位求偿权，求偿范围应以弥补保险人的损失为限，求偿规则应适用《民法典》第392条规定；被保险人先向混合担保人主张时，被保险人应当遵循诚实信用原则，不得实施投机行为损害保险人的利益，否则由此造成的损失扩大部分，保险人有权拒赔。

关键词：保证保险代位求偿权法定债权转移混合担保

飞秒激光参数对硅橡胶表面结构与防冰性能影响的研究

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精密成形工程 2024年第6期16卷 12-23页

作者：贺彬波蒋果杨灿华南理工大学机械与汽车工程学院广州510641 深圳技术大学中德智能制造学院广东深圳518118

目的采用飞秒激光刻蚀硅橡胶表面,获得表面结构较优、润湿性能与防冰性能优异的超疏水硅橡胶表面。方法通过控制变量,设计单因素试验,研究飞秒激光参数(填充间距、能量密度、扫描速度)对硅橡胶表面结构的影响规律。基于正交试验设计和... 详细信息

目的采用飞秒激光刻蚀硅橡胶表面,获得表面结构较优、润湿性能与防冰性能优异的超疏水硅橡胶表面。方法通过控制变量,设计单因素试验,研究飞秒激光参数(填充间距、能量密度、扫描速度)对硅橡胶表面结构的影响规律。基于正交试验设计和极差分析获得使表面结构规整且表面粗糙度最大的相对最优工艺参数,研究飞秒激光参数对表面粗糙度的影响主次顺序。结果飞秒激光刻蚀硅橡胶的相对最佳工艺参数如下:能量密度为5 J/cm^(2),扫描速度为200 mm/s,填充间距为20μm。最优参数组下激光刻蚀的超疏水硅橡胶表面粗糙度达到最大值5.954μm,具有规整的峰状凸起与微纳结构和优异的超疏水性能,水接触角高达165.3°,滚动角低至2.6°。该超疏水硅橡胶表面具有优异的防冰性能,在低温高湿环境下,与未处理的硅橡胶表面相比,结冰时间由67 s延长至312 s,冰黏附强度由39.6 kPa降低至7.4 kPa。超疏水硅橡胶还具有良好的循环除冰性能,经20次结冰/除冰循环后,冰黏附强度仍不超过20 kPa;此外,该表面还具有优异的耐腐蚀性能和良好的耐磨损性能。结论飞秒激光增大能量密度和减小扫描速度会使激光刻蚀宽度增大,要避免纵向条纹,应控制填充间距不超过激光刻蚀宽度。激光参数优化后刻蚀出的超疏水硅橡胶表面具备优异的防冰性能,并且机械与化学稳定性较好,在恶劣环境中的防冰领域,具有广阔的应用前景。

关键词：硅橡胶飞秒激光刻蚀纵向条纹激光参数优化超疏水表面防冰表面