增强《文检课》教学中学生的情报意识

文章从文献检索知识的传授与情报意识的树立及高教改革的战略与情报检索意识的强化两个方面进行了论述。     

皱叶忍冬的组织培养与快速繁殖初步研究

以宜州当地主要金银花品种皱叶忍冬的茎段为外植体材料,于MSt和1/2MS附加不同激素配比的基本培养基上,探讨丛生芽诱导及生根诱导的条件。试验结果表明：丛生芽诱导和继代培养的培养基为MS 6-BA0．5mg／L IBA0．05mg／L,生根培养基为1/2MS IBA1．0mg／L NAA0．05mg／L．     

Accelerate adversarial training with loss guided propagation for robust image classification

Adversarial training is effective to train robust image classification models. To improve the robustness, existing approaches often use many propagations to generate adversarial examples, which have high time consumption. In this work, we propose an efficient adversarial training method with loss guided propagation (ATLGP) to accelerate the adversarial training process. ATLGP takes the loss value of generated adversarial examples as guidance to control the number of propagations for each training instance at different training stages, which decreases the computation while keeping the strength of generated adversarial examples. In this way, our method can achieve comparable robustness with less time than traditional training methods. It also has good generalization ability and can be easily combined with other efficient training methods. We conduct comprehensive experiments on CIFAR10 and MNIST, the standard datasets for several benchmarks. The experimental results show that ATLGP reduces 30% to 60% training time compared with other baseline methods while achieving similar robustness against various adversarial attacks. The combination of ATLGP and ATTA (an efficient adversarial training method) achieves superior acceleration potential when robustness meets high requirements. The statistical propagation in different training stages and ablation studies prove the effectiveness of applying loss guided propagation for each training instance. The acceleration technique can more easily extend adversarial training methods to large-scale datasets and more diverse model architectures such as vision transformers.     

思想政治宣传环境优化探究

思想政治宣传环境对思想政治宣传工作具有举足轻重的影响，宣传环境的好坏最终决定着宣传效果的优劣。为更好地提高思想政治宣传工作的效果，当前迫切需要从加强国民教育、加快队伍建设、加大经费投入、加强组织管理等四个方面对思想政治宣传环境进行优化。     

胸腺肽聚乳酸微球的制备和体外释药研究

为了寻找适于多肽分子吸收,免疫学上"有效"、"安全",且服用方便的口服制剂,用W/O/W型乳化挥发法制备胸腺肽聚乳酸微球,正交实验方法优化了制备工艺.通过差热分析证明载药微球已较好形成,Lowry法测定药物的含量,计算微球的载药量、包封率及体外释药量.结果表明,所得微球平均粒径为13.8 μm,平均包封率为80.7%,前12 h的体外释药符合Higuchi方程,T1/2=295 min,在25℃和40℃分别放置90d,微球的粒径分布和剩余药量无显著变化.微球的载药量和包封率符合要求,释药半衰期长,具有良好的应用前景.     

文化视野下的我国三大球发展困境及其出路

在文化视角下对我国三大球的发展困境及其出路进行了回眸与反思。提出文化视野下我国三大球的发展困境主要体现在,精神文化层面：“金牌战略”的核心价值理念错误引导、我国传统文化思想的束缚、三大球文化创新意识和能力缺乏;制度文化层面：举国体制的时效性下降、人才培养模式单一、行政管理体制存在弊端;物质文化层面：三大球联赛职业化水平低、专业队伍建设及后备人才匮乏、教练员数量和质量限制。三大球的发展出路体现在精神文化层面培养政府和民众的三大球精神文化自觉意识;制度文化层面通过制度创新激活三大球自主创新的活力;物质文化层面推进三大球的市场化、职业化与产业化进程,凝聚复兴的物质力量。     

Wave motion of smoke in subway fire environment

Wave motion in subway or tunnel fire is an intrinsic property of smoke.As the pressure of smoke changes with mass of certain power,a kind of linear wave equation for smoke can be derived from the conservation equations of its mass and momentum,under nearly homogeneous zone assumption.The smoke movement of 4 subway fires was simulated with Airpak.By fitting the pressure-mass functions to the simulated data,wave equations of the smoke were derived,and wave motions of smoke were thus validated.It can be seen that smoke wave is a kind of mass wave,whose velocity is inversely proportional to smoke mass,and wave of a bigger fire propagates slower.     

中小学校长信息素养与学校互动发展的实证研究

在基础教育信息化建设中,校长信息素养影响着学校教育信息化的发展与深层次应用。基于实证分析,从不同条件视角来分析校长信息素养的差异性,探究在学校教育信息化过程中校长信息素养与学校信息化建设乃至学校发展之间的互动关系,为教育信息化决策与校长专业发展提供依据。     

新媒体探析

计算机与信息技术的革命催生了种种新媒体。新媒体是个相对的概念,指的是相对于旧的传统媒体,新近出现的种种传播媒体。目前,从手机到互联网等各种数字媒体是最为常见的新媒体形态。新媒体具有传播主体的多元化、传播内容的多样性、传播行为的主动性、交互性、异步性以及新的传播效力等新的传播特性。     

一种采用自适应机制的分层置信传播算法

提出了一种基于迭代自适应机制的改进算法,有效地缩减了分层置信传播算法(HBP)的计算时间.传统HBP计算时间随指定的迭代上限增加而线性增长.为此引入消息收敛的条件判断,在迭代上限相同情况下,减少算法的迭代次数,缩减整体迭代时间.实验表明,与传统HBP相比,该方法计算时间缩减了38%以上,计算时间对整体迭代上限不敏感.该方法可以应用于使用HBP算法的其他方法.