0.01%28-高芸苔素内酯·吲哚丁酸对寒地水稻生长及产量的影响

为明确0.01%28-高芸苔素内酯·吲哚丁酸对寒地水稻生长调节作用,采用随机区组试验设计,研究不同施药量对寒地水稻生长及产量的影响。结果表明,于分蘖期施用0.01%28-高芸苔素内酯·吲哚丁酸颗粒剂,能明显促进水稻分蘖,缩短始穗期至齐穗期天数,促进干物质积累,增强抗倒伏能力,提高水稻产量,对水稻生长安全。药剂施用量为22.5 kg/hm^(2)时,水稻穗粒数、结实率、千粒重最大,产量最高,是最佳施用量。

PAD Class教学模式对英语专业学生写作焦虑影响的实证研究

本研究以英语专业大一120名学生为实验对象,进行了为期16周的实证研究,以探讨PAD class教学模式对英语专业学生写作焦虑的影响。基于《二语写作焦虑量表》调查问卷结果表明:英语专业学生总体焦虑处于中等焦虑水平,PAD Class能有效降低学生的写作总体焦虑,其中课堂焦虑、构思焦虑、自信焦虑明显降低,但回避焦虑没有达到显著水平;PAD Class模式对高中低不同写作水平学生的写作焦虑都有影响,对中、低水平学生的写作焦虑缓解比对高水平学生的影响效果更明显。

0.01%阿托品滴眼液对不同程度近视儿童黄斑微循环的影响

目的:研究0.01%阿托品滴眼液对不同程度近视儿童黄斑血流密度及视网膜厚度的影响。方法:前瞻性自身对照研究。64例(112眼)首次诊断为屈光不正(近视)的患者在使用0.01%阿托品滴眼液治疗前及用药6个月后进行眼科检查,包括裸眼远视力(uncorrecte d distance visual acuity,UCVA)、眼轴(axial length,AL)、等效球镜度数(spherical equivalent,SE)、裂隙灯检查及使用光学相干断层扫描(optical coherence tomography,OCT)常规模式测量黄斑神经节细胞-内丛状层厚度(macular ganglion cell-inner plexiform layer thicknes,mGCIPL)。使用光学相干断层扫描血管成像(optical coherence tomography angiography,OCTA)测量黄斑区血管密度、中心凹无血管区面积等。比较用药前后各项指标的变化。结果:3组近视患者AL均较用药前显著增长(P<0.01),但低、中度近视用药前后差值明显小于高度近视组;3组近视患者SE均较用药前增长,但低度近视组用药前后差异无统计学意义(P>0.05),中度、高度近视组差异均具有统计学意义(P<0.01);3组近视患者眼压(intraocular pressure,IOP)较用药前无明显变化(P>0.05)。用药6个月后,中心圆黄斑血管密度(central circle macular vessel density,cCVD)增加在低度、中度近视组中均有统计学差异(P<0.01),在高度近视组中差异无统计学意义(P>0.05)。3个近视组用药前后外圆黄斑血管密度(outer circle macular vessel density,oCVD)、内圆黄斑血管密度(inner circle macular vessel density,iCVD)、全圆黄斑血管密度(whole circle macular vessel density,wCVD)无明显改变(P>0.05);mGCIPL增加在低度近视组中有统计学差异(P<0.01),在中度、高度近视组中均无统计学差异(P>0.05)。3个近视组黄斑中心凹无血管区(foveal avascular zone,FAZ)面积在用药前后无明显改变(P>0.05)。3个近视组中cCVD和AL、SE之间均无相关性(P>0.01),低度近视组中c CVD与m GCIPL呈低度相关(r=0.442,P<0.05),中度、高度近视组中cCVD与mGCIPL均无相关性(P>0.01)。结论:0.01%阿托品滴眼液可以明显降低低度近视患儿AL增长及屈光度增长速度,增加低、中度近视患儿黄斑中心圆血管密度,增加低度近视患儿m GCIPL厚度。

Hybrid treatment of varied orthodontic appliances for a patient with skeletal class II and temporomandibular joint disorders:A case report and review of literature

BACKGROUND The relation between orthodontic treatment and temporomandibular disorders(TMDs)is under debate;the management of TMD during orthodontic treatment has always been a challenge.If TMD symptoms occur during orthodontic treatment,an immediate pause of orthodontic adjustments is recommended;the treatment can resume when the symptoms are managed and stabilized.CASE SUMMARY This case report presents a patient(26-year-old,female)with angle class I,skeletal class II and TMDs.The treatment was a hybrid of clear aligners,fixed appliances and temporary anchorage devices(TADs).After 3 mo resting and treatment on her TMD,the patient’s TMD symptom alleviated,but her anterior occlusion displayed deep overbite.Therefore,the fixed appliances with TAD were used to correct the anterior deep-bite and level maxillary and mandibular deep curves.After the levelling,the patient showed dual bite with centric relation and maximum intercuspation discrepancy on her occlusion.After careful examination of temporomandibular joints(TMJ)position,the stable bite splint and Invisible Mandibular Advancement appliance were used to reconstruct her occlusion.Eventually,the improved facial appearance and relatively stable occlusion were achieved.The 1-year follow-up records showed there was no obvious change in TMJ morphology,and her occlusion was stable.CONCLUSION TMD screening and monitoring is of great clinical importance in the TMD susceptible patients.Hybrid treatment with clear aligners and fixed appliances and TADs is an effective treatment modality for the complex cases.

0.01%与0.05%阿托品滴眼液对近视儿童瞳孔直径和眼压的影响

目的:比较0.01%和0.05%阿托品滴眼液对近视儿童瞳孔直径和眼压的影响。方法:前瞻性非随机对照研究。收集2021-03/2022-02于濮阳市第二人民医院眼科就诊的近视患者232例,根据患者意愿分为0.01%阿托品滴眼液组81例,0.05%阿托品滴眼液组77例和对照组74例使用安慰剂滴眼液(等渗赋形剂)。分别于用药前,用药后6、12 mo测量三组患者的瞳孔直径和眼压。结果:最终181例181眼(均取右眼数据纳入研究)完成1 a随访,失访率为22.0%(51/232),其中0.01%阿托品滴眼液组62例62眼,0.05%阿托品滴眼液组54例54眼,对照组65例65眼。三组患者基线瞳孔直径和眼压比较无差异(均P<0.05)。用药12 mo后,0.01%阿托品滴眼液组、0.05%阿托品滴眼液组和对照组患者的瞳孔直径变化量分别为0.79±0.70、1.29±0.66和0.06±0.74 mm(P<0.001),0.05%阿托品滴眼液组的瞳孔直径变化显著高于0.01%阿托品滴眼液组和对照组,0.01%阿托品滴眼液组的瞳孔直径变化显著高于对照组(均P<0.05)。用药12 mo后,0.01%阿托品滴眼液组、0.05%阿托品滴眼液组和对照组患者的眼压变化分别为-0.70±1.94、-0.22±1.79和0.25±2.03 mmHg(P<0.05),0.05%阿托品滴眼液组的眼压变化与0.01%阿托品滴眼液组和对照组比较均有差异(均P>0.05),0.01%阿托品滴眼液组的眼压变化与对照组比较有差异(P<0.05)。多因素线性回归分析,基线近视屈光度越小、基线瞳孔直径越小,使用阿托品滴眼液后瞳孔直径变化越明显(β=0.230,95%CI:0.005-0.455,SE=0.114,t=2.025,P=0.045;β=-0.562,95%CI:-0.729--0.396,SE=0.084,t=6.697,P<0.001)。基线眼压越小,使用阿托品滴眼液后眼压变化越明显(β=-0.285,95%CI:-0.439--0.131,SE=0.078,t=3.662,P<0.001)。结论:使用0.01%和0.05%阿托品滴眼液后近视儿童的瞳孔直径增大,且使用0.05%阿托品滴眼液的瞳孔直径变化显著高于0.01%阿托品滴眼液,未发现0.01%和0.05%阿托品滴眼液的应用与眼压升高存在风险关系。

0.01%阿托品滴眼液对6~10岁近视儿童眼球生物学参数的影响

目的探讨0.01%阿托品滴眼液对6~10岁近视儿童眼球生物学参数的影响。方法选取2022年1月至2023年1月我院收治的84例6~10岁近视儿童,随机分为研究组(n=42)和对照组(n=42)。对照组仅佩戴全矫单焦框架眼镜治疗,研究组在对照组治疗基础上给予0.01%阿托品滴眼液治疗,比较两组的眼球生物学参数及不良反应。结果两组儿童治疗前后的眼压比较差异无统计学意义(P>0.05);治疗后,研究组的眼轴长度、等效球镜度数低于对照组(P<0.05)。研究组不良反应发生率为14.29%,与对照组的4.76%比较差异无统计学意义(P>0.05)。结论0.01%阿托品滴眼液治疗6~10岁近视儿童能够有效延缓其眼轴长度、等效球镜度数增加,但对其眼压无显著影响,且安全性较高,值得临床推广应用。

Class Imbalanced Problem:Taxonomy,Open Challenges,Applications and State-of-the-Art Solutions

The study of machine learning has revealed that it can unleash new applications in a variety of disciplines.Many limitations limit their expressiveness,and researchers are working to overcome them to fully exploit the power of data-driven machine learning(ML)and deep learning(DL)techniques.The data imbalance presents major hurdles for classification and prediction problems in machine learning,restricting data analytics and acquiring relevant insights in practically all real-world research domains.In visual learning,network information security,failure prediction,digital marketing,healthcare,and a variety of other domains,raw data suffers from a biased data distribution of one class over the other.This article aims to present a taxonomy of the approaches for handling imbalanced data problems and their comparative study on the classification metrics and their application areas.We have explored very recent trends of techniques employed for solutions to class imbalance problems in datasets and have also discussed their limitations.This article has also identified open challenges for further research in the direction of class data imbalance.

BLS-identification:A device fingerprint classification mechanism based on broad learning for Internet of Things

The popularity of the Internet of Things(IoT)has enabled a large number of vulnerable devices to connect to the Internet,bringing huge security risks.As a network-level security authentication method,device fingerprint based on machine learning has attracted considerable attention because it can detect vulnerable devices in complex and heterogeneous access phases.However,flexible and diversified IoT devices with limited resources increase dif-ficulty of the device fingerprint authentication method executed in IoT,because it needs to retrain the model network to deal with incremental features or types.To address this problem,a device fingerprinting mechanism based on a Broad Learning System(BLS)is proposed in this paper.The mechanism firstly characterizes IoT devices by traffic analysis based on the identifiable differences of the traffic data of IoT devices,and extracts feature parameters of the traffic packets.A hierarchical hybrid sampling method is designed at the preprocessing phase to improve the imbalanced data distribution and reconstruct the fingerprint dataset.The complexity of the dataset is reduced using Principal Component Analysis(PCA)and the device type is identified by training weights using BLS.The experimental results show that the proposed method can achieve state-of-the-art accuracy and spend less training time than other existing methods.

Extensive numerical simulations on competitive growth between the Edwards–Wilkinson and Kardar–Parisi–Zhang universality classes

Extensive numerical simulations and scaling analysis are performed to investigate competitive growth between the linear and nonlinear stochastic dynamic growth systems, which belong to the Edwards–Wilkinson(EW) and Kardar–Parisi–Zhang(KPZ) universality classes, respectively. The linear growth systems include the EW equation and the model of random deposition with surface relaxation(RDSR), the nonlinear growth systems involve the KPZ equation and typical discrete models including ballistic deposition(BD), etching, and restricted solid on solid(RSOS). The scaling exponents are obtained in both the(1 + 1)-and(2 + 1)-dimensional competitive growth with the nonlinear growth probability p and the linear proportion 1-p. Our results show that, when p changes from 0 to 1, there exist non-trivial crossover effects from EW to KPZ universality classes based on different competitive growth rules. Furthermore, the growth rate and the porosity are also estimated within various linear and nonlinear growths of cooperation and competition.

World Class Elite Breaststrokers Downward Kick EMG Muscle Activity of the Gluteus Maximus, Quadriceps Femoris, Hamstring, Gastrocnemius Medialis, Rectus Abdominal, and Erector Spinae

This study analyzed the difference between using a downward breaststroke kick and a horizontal breaststroke kick in a sample of world class elite swimmers.We compared average muscle activity of the gluteus maximus,quadriceps femoris(vastus medialis and rectus femoris),hamstring/long head of the biceps femoris,gastrocnemius medialis,rectus abdominal,and erector spinae when using the downward breaststroke kick technique.We find that when this sample of swimmers utilized the downward breaststroke kick,max speed and velocity per stroke increased,measured by 12,788 EMG samples,where the results are highly correlated to duration of the aerodynamic buoyant force in breaststroke kick technique.The increases in performance observed from measuring the world class elite swimmers is highly correlated to the duration of the kick aerodynamic buoyant force.Among this sample of elite swimmers,the longer a swimmer demonstrates a buoyant force breaststroke kick,the lower the time in a 100 breaststroke.

Simple and effective method for treating severe adult skeletal class II malocclusion: A case report

BACKGROUND Severe skeletal class II malocclusion is the indication for combined orthodontic and orthognathic treatment.CASE SUMMARY A woman with a chief complaint of a protruding chin and an inability to close her lips requested orthodontic camouflage.The treatment plan consisted of extracting the right upper third molar,right lower third molar,left lower second molar,and left upper third molar and moving the maxillary dentition distally using a convenient method involving microimplant nail anchors,push springs,long arm traction hooks,and elastic traction chains.After 52 months of treatment,her overbite and overjet were normal,and her facial profile was favorable.CONCLUSION This method can be used for distal movement of the maxillary dentition and to correct severe skeletal class II malocclusion in adults.

Research and Practice of Flipped Classroom Teaching Mode of Integrated Business English Course Under MOOC Environment

As an online course-teaching mode,Massive Open Online Course(MOOC)has drawn great attention from both teachers and students.It is necessary to give full play to the advantages of MOOC resources and to enhance teachers’consciousness of“identity remodeling”in the process of Integrated Business English flipping classroom teaching.Combining the advantages of MOOC and flipped classroom teaching during before-,during-,and after-class will greatly help promote the overall quality of business English teaching in universities.

Thin-Shell Wormholes Admitting Conformal Motions in Spacetimes of Embedding Class One

This paper discusses the feasibility of thin-shell wormholes in spacetimes of embedding class one admitting a one-parameter group of conformal motions. It is shown that the surface energy density σis positive, while the surface pressure is negative, resulting in , thereby signaling a violation of the null energy condition, a necessary condition for holding a wormhole open. For a Morris-Thorne wormhole, matter that violates the null energy condition is referred to as “exotic”. For the thin-shell wormholes in this paper, however, the violation has a physical explanation since it is a direct consequence of the embedding theory in conjunction with the assumption of conformal symmetry. These properties avoid the need to hypothesize the existence of the highly problematical exotic matter.

幼儿园自然探究活动中师幼互动的提升策略——基于CLASS评估调研分析

自然探究活动在培养幼儿实践能力与创造力方面具有显著优势,而活动中的师幼互动是保障活动质量的关键。使用CLASS评估系统,对广州市南沙区两所公办幼儿园教师在自然探究活动中的师幼互动情况展开实证调研的结果显示,教师在情感支持方面表现出积极态度,但在教育支持,尤其是促进幼儿概念发展和语言示范方面仍有待加强。其原因在于,教师科学素养较低,科学领域核心经验匮乏;教师组织管理能力存在短板,亟需深化有效教学策略;情感支持得分虚高,教师敏感性差异明显。基于此,需要加强专业培训,优化探究体验;提升师幼互动知识技能,补齐活动组织短板;优化情感支持策略,提升教师敏感性。

The Integration Strategy of Class Teacher Management and Mathematics Teaching

The professional and moral education of high school mathematics teachers will make classroom management work better,but their work pressure will also lead to classroom management problems.To do a good job in high school class teacher management and organically integrate it with mathematics teaching,we need to start from two aspects:mathematics teaching class teachers and class teacher work teaching,and penetrate mathematical thinking into daily classroom management,moral education,and classroom culture construction.Based on the attributes of the subject,we guide high school students to reflect after class to stimulate their self-management initiative through the cultivation of qualified class representatives.In addition,it is necessary to skillfully resolve classroom generative problems,change the roles of teachers and students,and integrate classroom management with mathematics teaching.

0.01%阿托品滴眼液在不同年龄段青少年近视防控疗效分析

目的分析应用0.01%阿托品滴眼液对青少年近视防控疗效观察。方法选取本院眼科门诊进行治疗的青少年近视患者(2020年1月至2022年7月)74例作为观察对象,分别是初中组39例(平均年龄13.6岁),高中组35例(平均年龄16.3岁),每组随机分配法对患者进行分组,组别名称为框架镜组及观察组,观察组给予0.01%阿托品滴眼液治疗,框架镜组实施玻璃酸钠滴眼液点滴,都是每天一次睡前点滴。将治疗前后眼轴长度、轴差,治疗前后屈光度及屈光差作为观察指标结合进行治疗效果判定。结果初中组的框架镜和阿托品治疗一年后轴长分别增加0.91±0.23(mm)、0.38±0.21(mm),(t=1.8612,P<0.05),高中组的框架镜和阿托品治疗一年后轴长分别增加0.68±0.22(mm)、0.25±0.26(mm),(t=1.5612,P<0.05),两组中患者治疗前眼轴长度差异明显,有统计学意义(P<0.05),初中、高中两组患者眼轴长度均有所增加,初中组眼轴长增长相比高中组大,但在使用0.01%阿托品滴眼液干预后,初中生组眼轴长度增长速度的下降幅度显著大于高中生组。结论应用0.01%阿托品滴眼液对于近视防控的疗效显著,不同年龄段学生在使用0.01%阿托品滴眼液干预后的疗效存在差异,初中生的眼轴长度增长速度相对较快,但使用0.01%阿托品滴眼液后的疗效表现出比高中组较明显的改善,值得在近视防控治疗中应用。

CLASS理论视域下幼儿园区域活动中师幼互动水平的提升

CLASS理论以其显著的优势评价新时期幼儿园区域活动师幼互动情况,其践行有利于在落实国家政策时践行素质教育,在和谐师生关系中促进身心健康。当前幼儿园区域活动中师幼互动的浅层化,削弱区域活动主题;情感支持不足制约幼儿园开展区域活动的连续性。教师应以CLASS理论为抓手,采用精准化的语言引导,善用教学机智,组织多种形式的师幼互动等,持续深化区域活动主题。教师应营造平等亲切的氛围,认真观察幼儿的有意义行为,有序推进幼儿的有意义行为,持续提升新时期区域活动师幼互动水平,促使幼儿全面发展,身心健康成长。

角膜塑形镜联合0.01%低浓度阿托品治疗儿童近视临床疗效及对眼生物学参数的影响观察

在儿童近视疾病临床治疗中,将角膜塑形镜与0.1%低浓度阿托品相结合,分析这一方案的治疗效果,并探讨其对患儿眼生物学参数的影响。方法 在研究中选择的对象均是本院收治的眼科患儿,全部患有近视疾病。入选对象的开始时间是2021年8月,结束时间是2022年8月,共94例。在分组时,根据患儿入院治疗的时间先后为依据,遵循平均原则。在此基础上,以“对照”(佩戴角膜塑形镜)和“联合”(佩戴角膜塑形镜+0.01%低浓度阿托品眼液)加以命名,由此形成两个治疗小组。在人数方面,处于均等化的状态,各47例,在比较效果及各项参数。结果 从治疗有效率、治疗后裸眼视力及等效球镜度数、治疗后眼生物参数、并发症发生率几个方面来看,联合组的各项情况均优于对照组,差异具有统计学意义(P<0.05)。结论 在近视患儿群体中,通过角膜塑形镜联合0.1%低浓度阿托品治疗方案的应用,能够有效提高患儿裸眼视力水平,降低等效球镜度数,改善眼生物参数,控制并发症发生,不仅安全性较高,还具有良好的治疗效果。因此,临床推广应用价值高,建议落实。

A Case Study on the Effectiveness of Pre-Class Activities in Higher Vocational English Classes: Taking Pingliang Vocational and Technical College as an Example

Based on Bloom’s“effective teaching theory,”this paper proposes pre-class activities to improve students’enthusiasm and autonomy in English learning.These include sentence construction,situational dubbing,famous quotes,English songs,English games,Chinese stories,regional cultures,and theme debates,which combine life,interest,and inspiration as the main characteristics.The activities can enhance the sense of participation and achievement of all students to achieve the purpose of effective teaching.

Application of the PAD Class Teaching Model in High School Education

The teaching mode of the Presentation-Assimilation-Discussion(PAD)class is beneficial to adapt to the objective needs of the transformation of modern talent training mode and optimize the ecology of classroom teaching.In the process of high school teaching,we should pay attention to grasp the concept,effectiveness,and goal orientation of the PAD class,follow the basic steps of knowledge teaching,internalization and absorption,mutual learning,discussion,and exchange,and realize the cultivation of core subject literacy in the process of two-way interaction between teaching and learning.