Early warning of coal dynamic disaster by precursor of AE and EMR"quiet period"

Efcient and accurate monitoring and early warning of coal dynamic disaster and other disasters can provide guarantee for the efcient operation of mine transportation system.However,the traditional threshold early warning method often fails to warning some accidents.To address above issues,a new early warning method was proposed based on"quiet period"phenomenon of AE and EMR during fracture.It is found that,a"quiet period"of AE and EMR was present before the load reaches the peak stress,which could be used as one of the precursors to warn the imminent failure of coal and rock specimens.MS and AE signals increased abnormally followed by the phenomenon of"quiet period"before the occurrence of coal dynamic disaster on site,and the decrease of MS events in the"quiet period"is about 57%–88%compared with that in previous abnormal increase stage.During the damage evolution of coal and rock,"quiet period"phenomenon usually occurred at 85%–90%of the peak stress,where the slope of damage parameter curve is almost zero.The"quiet period"of the AE-EMR signals and the low change rate of damage parameter before failure provide a theoretical foundation for the coal dynamic disaster warning based on the"quiet period"precursor found in MS-AE-EMR monitoring system.These fndings will help reduce the number of under-reported events and improve early warning accuracy.

CHINESE LADY'S DAILY WEAR IN LATE QING DYNASTY AND EARLY REPUBLIC PERIOD

The goal of this research is to describe and analyze women’s wear in the late Qing Dynasty andearly Republic Period(late 19th c.—early 20th c.),with an emphasis on the daily informal orsemi-formal wear,though some formal or ceremonial costumes such as wedding dress will also beincluded.This study will use Chinese costumes and textiles from many museums to fill in theblanks left by previous research and to give a more detailed and accurate description.It will alsouse historical documents to find the original names of these items and to illustrate a general conceptof their usage on different occasions.The different categories of women’s wear will be described in the following order:①robes orcoats;②jackets;③waistcoats or vests;④skirts;⑤pants and leggings;⑥shoes and socks;⑦headdresses;and⑧others.Of every category,the textiles,decoration,cut,form,style,colourand motif will be discussed.The way in which these items were combined will also be discussed.The comparison between women’s wear and men’s wear,women’s and children’s informal andformal dress will be given.Here are some tentative conclusions.First,the Manchu and Han style coexisted and mixedwith each other and were worn by both Manchu and Han women.Second,the basic silhouettesand cuts were relatively stable and conventional,while the decorations and details(openings,fasten-ings,pleats,vents,collars and hemlines)were different.The former represented accepted socialstandards while the latter could be a matter of personal taste.Third,women’s wear in that periodwere highly stylized,miscellaneous,elaborate,detailed,multicolored and multi-thematic.

Origin of Qipao Fashion in Early Republic Period

The goal of this research is to analyze and discuss the origin of Qipao as women's fashionable wear in the early Republic Period (1911-1949).The origin of Qipao fashion will be discussed in three aspects:1) discussion of the original time,place and consumer group of Qipao fashion;2) analysis of initial style and wear combination of Qipao,3) deduction of the origin of the name Qipao.Besides,the analysis will also be given about Qipao's aesthetic characters,its production,consumption guarantee as well as its social backgrounds.The research will be made on the basis of the principles and methods of history,social psychology of clothing and design,and will use many materials especially historical writings and publications to give a more detailed discussion.Here are some tentative conclusions. Firstly, Qipao as a kind of one-piece dress was not inherited directly from the robe of Banner Style. It was a new fashion in the 1920s, which combined the elements of long vest called Qipao Majia, Wenming Xin Zhuang and the Western dress. Secondly, the Shanghai female students were the pioneering group wearing Qipao in 1925. Thirdly, the gradual acceptance of Qipao was mainly due to its aesthetic characters, production, consumption as well as social backgrounds at that time. And it was the kind of daily wear of many Chinese women after 1927. Fourthly, since Qipao represents the special clothing which integrated Chinese traditional style and the Western fashion in the early Republic Period, Qipao is advised to be taken as a special term to take the place of the previous ones like Mandarin Dress, Chipau and Cheongsam and so on.

An unusual homing behavior found in the Sichuan Partridge during the early brooding period

In this study,we report an unusual homing behavior of the Sichuan Partridge(Arborophila rufipectus)at the Laojunshan National Nature Reserve,Sichuan Province,China.Hen Sichuan Partridges led the chicks back to the nests where they hatched in the evening and roosted there over night.This behavior lasted 6.7±4.3 nights(range=1–15;n=13)after the chicks hatched.At this stage,the hens became very vigilant to predators and human disturbance.If disturbed,they often abandoned the nests immediately and no longer returned thereafter.The ambient temperature at night during the early brooding period of Sichuan Partridge at our study site was^12.4°C.Our findings suggest that hen Sichuan Partridges may make trade-offs between nest predation risks versus the thermoregulatory needs of their young.

Enlightenment of the Critical Period Hypothesis for the Early English Education

Whether children should learn English as early as possible has been a controversial topic, and one of the focal point is the credibility of the critical period hypothesis.Does critical period hypothesis really exist?How does child's age factor influence English acquisition?Analyzing the problems existing in the early English education based on the critical period hypothesis theory, secondly, investigating child's characteristics and psychological characteristics based on a case study.The research results show that learning English is not the sooner the better; the emphasis is how to ensure the quality.We should Specify children's English education market, and providence environment of language acquisition, attach great importance to the interest, and give full play to children in different stages of learning advantage.Parents and society should correctly treat the early English education, reduce misunderstanding and promote the healthy development of children's English education.

Brief Analysis on the Earlier the Better in SL Learning

With the intense globalization and human migration,a worldwide attention to multiple languages,cultures and abilities to communicate effectively with people across languages and cultures has been aroused. Under such circumstance,the switch to an earlier start of second language introducing in school appears to be an international phenomenon. This paper just aims to make a discussion on the idea of the earlier the better in SL learning.

Paleoclimate Changes during the Early Oligocene in the Hoh Xil Region, Northern Tibetan Plateau

Sedimentological, cyclic-stratigraphic, paleomagnetic, and clay-mineralogical studies on the early Oligocene Yaxicuo Group in the Hoh Xil Basin, the largest Cenozoic sedimentary basin in the hinterland of the Tibetan Plateau, provide abundant information of paleoclimate changes. A 350-m thick section in the middle-lower Yaxicuo Group was analyzed to reveal the climatic history that occurred in the Hoh Xil region during the early Oligocene interval 31.30-30.35 Ma, dated with the paleomagnetic chronostratigraphy. The results indicate that arid and cold climate dominated the Hoh Xil region during the early Oligocene in general, being related to the global cooling and drying events that occurred in the earliest Oligocene. Within this period, relatively warm and wet climate accompanied by strong tectonic activity occurred in the 31.05-30.75 Ma interval; while arid and cold climate and relatively inactive tectonics occurred in the 31.30-31.05 and 30.75-30.35 Ma intervals. Furthermore, spectral analyses of high-temporal resolution paleoclimatic records show orbital periods including eccentricity, obliquity, and precession. It is concluded that paleoclimate changes during the early Oligocene in the Hoh Xil region were forced by both tectonic activity and orbital periods.

On the Feasibility of Early-age English learning

Children's English learning in China attracts more and more people's attention and is on the tendency of starting at an early age. Under the trend of "learning English from childhood", the author has explored the Critical Period Hypothesis and discussed the younger learners' disadvantages and older learners' advantages when learning English. and concludes that early-age English learning is not feasible.

A Typical Production and Elimination Process of Particles in Beijing during Early 2008 Olympic Games

[Objective] The aim was to discuss he produce and elimination rules of particles in Beijing during early 2008 Olympic Games. [Method] Based on the analysis of particulate matter online observation data and meteorological data during the corresponding period in Chinese environmental science college, Hysplit Back trace model and Numerical weather prediction graphs, and combined with the different analytical methods on meteorological flow fields, a typical process of particles in Beijing during early 2008 Olympic Games was studied. [Result] The results indicated that during the ascent stage of PM2.5 concentration, the PM showed gradually aging phenomena; the process controlled by large scale synoptic system mainly. And the weak wind and the high humidity were not in favor of dispersion; the prolonged southerly air mass to bring the pollutant of Hebei, Taijin and Shandong to Beijing; mixing height and temperature curve took the importance role to the pollution. [Conclusion] The study provided theoretical basis for the discussion on factors influencing the production and elimination of particles in the air pollution process.

Early warning prevention and control strategies to reduce perioperative venous thromboembolism in patients with gastrointestinal cancer

BACKGROUND Venous thromboembolism(VTE)is a major cause of unexpected and perioperative in-hospital deaths.It is characterized by high morbidity,high mortality,high misdiagnosis rate,and high missed diagnosis rates.VTE is a common postoperative complication in cancer patients.VTE is preventable,and early identification of risk factors leading to VTE and appropriate early preventive actions can reduce its occurrence and mortality.Presently,there is no uniform standard for the prevention and control of VTE in clinical practice,and hospitals in China lack mature and effective protocols for the assessment,prevention,and treatment of VTE.AIM To explore whether an early warning program could influence the occurrence of deep vein thrombosis(DVT)postoperatively.METHODS This is a comparative retrospective cohort study,which enrolled patients who underwent laparotomic or laparoscopic gastrointestinal tumor resection for gastrointestinal cancer between January 2016 and December 2019.Patients were divided into a control group and an early warning group depending on whether or not the early warning program was implemented.A venous thromboembolism prevention and control team was established.The outcomes included the occurrence of DVT,the correct rate of VTE assessment,the coagulation indicators,and the mastery of VTE knowledge by the nurses.RESULTS A total of 264 patients were included in this study,with 128 patients in the control group and 136 patients in the early warning group.The occurrence rate of DVT in the early warning group was 6.6%(9/136),compared with 14.1%(18/128)in the control group(P<0.05).The correct rates of VTE risk assessment by the nurses and standard implementation rate of VTE preventive measures were 86.8%vs 65.6%and 80.2%vs 57.8%in early warning and control groups,respectively(all P<0.001).The independent factors associated with postoperative DVT occurrence were age(OR=1.083,95%CI:1.070-3.265,P=0.032),Hyperlipidemia(OR=1.127,95%CI:1.139-2.564,P=0.042),preoperative high VTE risk(OR=2.131,95%CI:1.085-5.178,P=0.001),time of operation(OR=2.268,95%CI:2.005-5.546,P=0.026)and not adoption of early warning prevention(OR=3.747,95%CI:1.523-6.956,P=0.017).CONCLUSION The early warning strategy was independently associated with the decreasing occurrence of VTE,and it might be suitable for protection from VTE in patients undergoing gastrointestinal cancer surgery.

Research on the Influence of Early Experience on the Growth Rate of Science and Engineering Graduate Supervisors

This research is based on three northeastern double first-class polytechnic universities.A total of 1628 science and engineering graduate supervisors?resumes were referred to from an official website by the random sampling method,of which only 500 supervisors were included in consideration of complete information,key events,and time in terms of the educational background(undergraduate school,graduate school,doctoral school,number of masters,number for Dr.),early work background(number of postdocs,number of overseas visits,numbers of research work),and the growth rate(period from graduation to associate professor title).The higher education background and early work background were defined as early experience,and the database of these 500 science and engineering graduate supervisors with complete resume information from three double first-class universities in northeastern China was established.In this study,the growth rate of the growth period was divided into two at the critical period:the growth rate of the graduate supervisor to associate professors.Through stepwise multiple regression analysis,it was found that higher education background(undergraduate schools,graduate schools,doctoral schools,as well as the number of master's and doctorate degrees)as well as early work background(number of postdoctoral work,research work,and overseas visits)have a significant impact on the growth rate of graduate supervisors to associate professors.

Simultaneous Bilateral Thoracoscopic Pneumonectomy for Early Multiple Primary Lung Cancer Feasibility Analysis

Objective:To analyze the feasibility of simultaneous bilateral thoracoscopic lung resection in the treatment of multiple primary lung cancers in the early stage.Methods:The study time range is between March 2019 and March 2021.A sample of 30 patients with early multiple primary lung cancer admitted to this hospital were included,and they were divided into a study group,a control group,and samples within the group using a random number table scheme n=15,patients in the control group underwent staged bilateral thoracoscopic pneumonectomy,and patients in the study group underwent bilateral thoracoscopic pneumonectomy at the same time.The indicators of the two groups were compared and analyzed.Results:There was no significant difference in the operation time and intraoperative blood loss between the two groups(P>0.05).There were significant differences in the VAS score,total length of hospital stay,and total surgical costs on the first day after surgery(P<0.05);there was no significant difference in the two groups'postoperative recovery indicators and the incidence of complications(P>0.05).Conclusion:It is safe and feasible to treat patients with multiple primary lung cancer in both lungs at the same time with simultaneous bilateral thoracoscopic surgery,and is suitable for promotion.

基于风险评估模型的传染病预警体系的建立

目的建立一套基于风险评估模型的传染病预警体系,推动传染病管理水平的提升。方法通过搜集、整理最新的研究成果,参考相关的传染病预警评价指标体系的理论框架,构建基于风险评估模型的传染病预警体系。结果本次研究共纳入了12名专家,筛选出了三个一级指标,涉及流行前期指标、典型症状期指标、非典型症状期指标等,同时涉及7个二级指标。体系的必要性平均得分为8.27±0.24分,可获得性平均得分为7.74±0.34分。结论基于风险评估模型的传染病预警体系的建立有利于当地及时掌握传染病流行趋势,并进行调查指标分布趋势分析,然后提出相应的预警方案,可为有效预防传染病提供相关的依据。

早产产妇产后早期母婴关系影响因素分析及应对策略

目的:探究早产产妇产后早期母婴关系影响因素并提出应对策略。方法:选择2022年8月-2023年7月于本院分娩的170例早产产妇为研究对象,产后42 d来院复查时以一般资料调查问卷、中文版母婴依恋量表(CMAI)、中文版产后疲乏量表(PFS)、中文版育儿信心量表(KPCS)、小婴儿气质问卷(EITQ)进行调查,采用多元线性回归模型分析早产产妇产后早期母婴关系的影响因素。结果:共发放170份调查问卷,有效回收158份,有效回收率为92.9%;CMAI评分73.48±10.62分、PFS评分22.56±3.28分、KPCS评分35.61±4.12分;Pearson相关分析显示,PFS评分与CMAI评分呈负相关、与CMAI评分呈正相关(均P<0.001);单因素分析显示,不同年龄、家庭月收入、分娩方式、产次、早产儿气质类型、喂养方式及住院期间是否存在母婴分离的早产产妇产后早期CMAI评分有差异,多因素分析显示,年龄<35岁、初产、住院期间母婴分离、早产儿气质类型为困难型、喂养方式为人工喂养、产后疲乏度高、育儿信心低均是早产产妇产后早期母婴关系的独立影响因素(均P<0.05)。结论:本次调查的早产产妇产后早期母婴依恋水平中等,临床应针对相关影响因素采取干预措施,以促进良好母婴关系的建立与维持。

档案文献所呈现的清前期在台湾地区设立土司之议

康熙二十二年(1683年)至乾隆九年(1744年),清朝统一台湾地区后的六十余年间,闽台官员先后五次提出仿照施行于西南民族地区的土司制度,在台湾地区“番族社会”设立土司,其中康熙朝两次,雍正朝两次,乾隆朝一次。前三次均为“私议”,第四次为南澳镇总兵许良彬的奏请,虽直达“天听”,但均未纳入清政府决策程序加以讨论。乾隆九年,福建布政使高山奏请在台湾地区“熟番”中设立土司,则经过户部议准、乾隆帝允行,再到闽浙总督马尔泰等提出反对并获乾隆帝支持的反复,前后历时近一年,最终被否决,相关讨论由此画上句号,此后再无人提及在台设立土司之事。本文拟通过档案文献厘清这一历史过程,并从雍正朝西南边疆实施大规模改土归流后土司制度的发展变化,结合同时期川西北“番族社会”设立“流职土司”情形,审视高山奏议所具有的积极意义和特殊历史价值。

新中国初期海南黎族苗族地区提高农业生产力措施研究

海南全岛解放后,党和政府根据黎族苗族地区经济社会文化实际,制定了一系列以经济-文化为主的政策措施,促进了海南黎族苗族地区由初期农耕社会-狩猎采集社会向农耕社会的转化,使得其农业生产力水平迅速提高、基础设施迅速改进、教育文化水平迅速提升、人民生活水平显著改善,迅速地拉近了与其他地区经济社会发展水平的距离,并为今后进一步发展奠定了基础。实践证明,这些政策措施,既符合农业社会的发展规律,又充分联系了黎族苗族地区的实际,因而在当时取得了良好的政策效益,其亦给当今推动海南黎族苗族地区的发展提供了很好的借鉴。

麦积山早期洞窟年代与“大凉州石窟”

以第74、78窟为代表的麦积山早期洞窟年代上限可以到十六国晚期,下限在北魏洛阳时代之前。这些早期洞窟与河西石窟连为一体,可统称为“大凉州石窟”,其来源近为新疆,远则中亚乃至印度。“大凉州石窟”并无鲜明统一特征,而以各地各具特色为主,其形成背景在于各地对东来佛教艺术的自由吸收和发挥,这与十六国时期的历史特性相符。与以往认识不同,本文认为麦积山早期洞窟影响了云冈石窟。包括麦积山早期洞窟在内的“大凉州石窟”曾影响到云冈,但不限于云冈,这个认识对于理解东部地区石窟具有重要的意义。

从儒家经典到课本选文:清末民初读经科向国文科的转化与融入

民国初年读经被取消后又被反复提倡,但清末的读经科部分转化、融入了国文科并影响了国文科的发展:国文科课程目标中的“德”由读经科转入,教材中部分课文是对读经科中的整本儒家经典的节选,教学中的诵读法也来自读经科。转化的发生及其成功,主要原因是:读经科改变了形式,顺应了现代教育(国文)的变化,教育目的由培养臣民转为培养公民,教育形式由私塾中的单个点拨到学堂中的班级授课,国文教材形态由专书变为选文,考试文体由八股变为古文。

慢熟的土地:清末到民国的云南话剧文学(1913—1949年)

云南话剧文学的发展起步很早,经历了从萌芽到潮起、寂寞呐喊和学步模仿再到激情怒火中的爆发几个阶段,有学生的集体创作,也有个人的苦闷绝叫,还有时代催生的民族激情,更有民主大潮中的社会呐喊。云南话剧文学创作演出的构成分为本土剧作家的本土创作演出和外来剧作家在云南的“在地”创作演出。在这一时期里,云南现代话剧文学创作蹒跚地走向初步成型,耕耘中,远远守望着姗姗来迟的成熟。