高校微生物学多媒体教学及双语教学一些问题的探讨

多媒体教学和双语教学是国家教育部鼓励的教学方式之一。多媒体教学克服了传统的微生物教学可视化差、形象不够直观等缺点 ,但全课堂多媒体教学则会扼杀教师教学中的即兴创造 ,成为典型的电脑“满堂灌”。多媒体课件的制作应符合教学规律 ,片面强调声形兼备 ,会导致许多环节与课堂脱节。使用双语教学能使我国的微生物教学同世界接轨 ,有效地促进高质量人才的培养 ,教学中应目的明确、树立信心、化难为易 ,探索其固有教学规律 ,努力做到教学相长。     

解读多媒体辅助教学

多媒体辅助教学作为一种新型教学模式,被许多老师所喜爱,不仅在课堂上声形并茂的演示课程内容,课下学生还可以在网络共享中查看多媒体课件的内容,突出重点,调动学生的学习热情,开拓视野。但是,与传统教学相比,多媒体辅助教学还存在一些问题,本文旨在解读多媒体教学,列出其优势,分析其劣势,提出多媒体教学应与传统教学相结合的教学模式。     

多媒体技术在儿科护理学教学中的应用

随着计算机多媒体技术的迅速发展,多媒体教学逐渐走入儿科护理学课堂。多媒体教学以其独特的优势提高了儿科护理学的教学质量,但同时也存在不足。因此在教学过程中应将多媒体教学与传统教学方法相结合,取长补短,以达到最佳的教学效果。     

浅谈多媒体环境下农村小学英语教学存在的问题以及解决对策

在当代的教学课堂中,多媒体教学已经成为了现在教学手段中的重点,有着比较好的效果,但是针对多媒体教学,在实行的过程中,会受到很多因素的限制,尤其是在现在的农村小学中,仍然存在着很多问题。本文将结合农村小学多媒体教学存在的问题,探讨农村小学多媒体教学存在的问题的解决对策。     

《人体寄生虫学》多媒体教学经验交流

就目前的教学状况而言,大学教育的教学改革是顺应时代发展要求的必然趋势,教学的方法与手段亦应不断地紧跟信息时代的高速发展的要求.诸如多媒体等信息化教学模式在当代大学的课堂教学中的应用越来越走向普及.然而,在如何正确对待和使用多媒体教学的方式与方法上仍存在各种各样的争议及误区,并且这些争议和误区已经不再是某些个案的简单累积.本文拟通过对多媒体在现代基础医学课程<人体寄生虫学>的本科教学中的实际应用进行综合的评价,并结合自身在多媒体教学过程中积累下来的一些认识,既对多媒体教学的优势加以肯定,同时也对于其应用中的困境进行客观的阐述和说明,并提出几点较为可行的解决办法,借此来探讨多媒体教学的教学方略.     

浅议多媒体生物教学的利与弊

运用多媒体教学手段,可以增强学生的学习兴趣和加深对知识的理解,提高生物课堂教学效率。但是,多媒体教学如果不能准确把握,则将存在很多隐患。本文结合生物教学的实践,简述多媒体教学的利与弊,并分析其中的原因。     

微生物学多媒体教学模式研究*

微生物学已成为生命科学领域的主干基础课程之一,其理论与应用技术发展迅速,为了增强学生的学习兴趣,更好的掌握微生物学知识,对传统的教学方法进行了改革和探索。重点进行了微生物学多媒体教学模式的研究,主要包括微生物学多媒体教学软件研制与开发、微生物学实验教学多媒体建设和微生物学网络教学多媒体建设等3个方面。     

《设施果树栽培学》多媒体教学课件的制作

培养高级专门人才是高等学校的根本使命。设施农业科学与工程专业主要为培养从事设施农业及相关领域的高级专门人才,《设施果树栽培学》为该专业的专业基础课。为提高该课程教学与学习效率,本课题组运用Microsoft Word、Photoshop、Author Ware、Powerpoint和Flash等软件制作了该课程的多媒体教学课件。尝试利用多媒体教学来弥补传统教学中的一些不足,促进教学手段现代化,提升教学效果。     

巧用多媒体 优化生物课堂

随着科技的发展,多媒体作为辅助教学弥补了传统教学的不足,有效提高了教学效率与质量,已逐渐被广大教师所采用。本文阐述了在高中生物课堂教学中,合理地运用多媒体辅助教学,凭借其图文并茂的特点,会自然而然地提高生物课堂的效率。     

计算机仿真软件在二氧化碳与水的反应的实验应用

利用传统黑板教学方法与应用多媒体仿真软件教学对比,得出多媒体教学的优越性与一般实验的可替代性的结论。     

MrHeter: improving MapReduce performance in heterogeneous environments

As GPUs, ARM CPUs and even FPGAs are widely used in modern computing, a data center gradually develops towards the heterogeneous clusters. However, many well-known programming models such as MapReduce are designed for homogeneous clusters and have poor performance in heterogeneous environments. In this paper, we reconsider the problem and make four contributions: (1) We analyse the causes of MapReduce poor performance in heterogeneous clusters, and the most important one is unreasonable task allocation between nodes with different computing ability. (2) Based on this, we propose MrHeter, which separates MapReduce process into map-shuffle stage and reduce stage, then constructs optimization model separately for them and gets different task allocation \(ml_{ij}, mr_{ij}, r_{ij}\) for heterogeneous nodes based on computing ability.(3) In order to make it suitable for dynamic execution, we propose D-MrHeter, which includes monitor and feedback mechanism. (4) Finally, we prove that MrHeter and D-MrHeter can greatly decrease total execution time of MapReduce from 30 to 70 % in heterogeneous cluster comparing with original Hadoop, having better performance especially in the condition of heavy-workload and large-difference between nodes computing ability.     

多媒体教育技术在微生物教学中的应用

计算机多媒体辅助教学、网络化教学已逐渐成为目前教学的主要载体。多媒体教学过程中采用大量形态逼真的图片、图标等素材,克服了传统的微生物教学可视性差,形象不够直观等缺点。介绍了微生物教学方式的发展,阐述了采用多媒体教学的优势,指出了多媒体教学应该注意的问题,探讨了如何充分发挥多媒体的优势,合理运用多媒体技术,使其更好的为微生物教学服务。     

vcluster: a framework for auto scalable virtual cluster system in heterogeneous clouds

Cloud computing is an emerging technology and is being widely considered for resource utilization in various research areas. One of the main advantages of cloud computing is its flexibility in computing resource allocations. Many computing cycles can be ready in very short time and can be smoothly reallocated between tasks. Because of this, there are many private companies entering the new business of reselling their idle computing cycles. Research institutes have also started building their own cloud systems for their various research purposes. In this paper, we introduce a framework for virtual cluster system called vcluster which is capable of utilizing computing resources from heterogeneous clouds and provides a uniform view in computing resource management. vcluster is an IaaS (Infrastructure as a Service) based cloud resource management system. It distributes batch jobs to multiple clouds depending on the status of queue and system pool. The main design philosophy behind vcluster is cloud and batch system agnostic and it is achieved through plugins. This feature mitigates the complexity of integrating heterogeneous clouds. In the pilot system development, we use FermiCloud and Amazon EC2, which are a private and a public cloud system, respectively. In this paper, we also discuss the features and functionalities that must be considered in virtual cluster systems.     

Differential dependence on DNA ligase of type II restriction enzymes: a practical way toward ligase-free DNA automaton

DNA computing study is a new paradigm in computer science and biological computing fields. As one of DNA computing approaches, DNA automaton is composed of the hardware, input DNA molecule and state transition molecules. By now restriction enzymes are key hardware for DNA computing automaton. It has been found that DNA computing efficiency may be independent on DNA ligases when type IIS restriction enzymes like FokI are used as hardware. In this study, we compared FokI with four other distinct enzymes HgaI, BsmFI, BbsI, and BseMII, and found their differential independence on T4 DNA ligase when performing automaton reactions. Since DNA automaton is a potential powerful tool to tackle gene relationship in genomic network scale, the feasible ligase-free DNA automaton may set an initial base to develop functional DNA automata for various DNA technology development and implications in genetics study in the near future.     

A resource-sharing model based on a repeated game in fog computing

With the rapid development of cloud computing techniques, the number of users is undergoing exponential growth. It is difficult for traditional data centers to perform many tasks in real time because of the limited bandwidth of resources. The concept of fog computing is proposed to support traditional cloud computing and to provide cloud services. In fog computing, the resource pool is composed of sporadic distributed resources that are more flexible and movable than a traditional data center. In this paper, we propose a fog computing structure and present a crowd-funding algorithm to integrate spare resources in the network. Furthermore, to encourage more resource owners to share their resources with the resource pool and to supervise the resource supporters as they actively perform their tasks, we propose an incentive mechanism in our algorithm. Simulation results show that our proposed incentive mechanism can effectively reduce the SLA violation rate and accelerate the completion of tasks.     

A CLIQUE algorithm using DNA computing techniques based on closed-circle DNA sequences

DNA computing has been applied in broad fields such as graph theory, finite state problems, and combinatorial problem. DNA computing approaches are more suitable used to solve many combinatorial problems because of the vast parallelism and high-density storage. The CLIQUE algorithm is one of the gird-based clustering techniques for spatial data. It is the combinatorial problem of the density cells. Therefore we utilize DNA computing using the closed-circle DNA sequences to execute the CLIQUE algorithm for the two-dimensional data. In our study, the process of clustering becomes a parallel bio-chemical reaction and the DNA sequences representing the marked cells can be combined to form a closed-circle DNA sequences. This strategy is a new application of DNA computing. Although the strategy is only for the two-dimensional data, it provides a new idea to consider the grids to be vertexes in a graph and transform the search problem into a combinatorial problem.     

DNA计算的发展现状及未来展望

随着高性能计算需求的不断增长,传统计算模式面临着前所未有的巨大挑战。在众多新兴计算技术中,DNA计算系统以其低能耗、并行化等特点而广受关注。DNA电路(DNA circuit)是实现DNA计算的基础,也是该领域重要的分子信息调控和处理技术。文中重点介绍了DNA计算的基本原理,并总结了最新的研究进展,最后讨论了基于DNA计算所面临的挑战。此类集成的分子计算系统有望广泛应用于航空航天、信息安全及国防建设等领域。     

生物信息学对计算机科学发展的机遇与挑战

生物信息学是一个发展很快的新兴学科,是计算机应用的最重要的领域之一,同时生物信息学的发展又给计算机学科提出了许多新的课题,从而促进计算机学科自身的发展。从数据库技术、海量存储技术、数据挖掘、计算几何、DNA计算、网格计算、机器学习、人工心智、web service等方面,就生物信息学对计算机科学发展的促进作用进行了论述。     

多媒体技术在人体解剖学教学实践中的作用

目的：探讨多媒体技术应用于在医学高等院校人体解剖学专业课程中的意义,以及该教学策略对生物医学教学实践的作用。方法：选取我院校本部学生80人,随机分为实验组和对照组,每组40人。实验组采取多媒体教学法,对照组则采用传统教学法。比较两组学生的期末考试成绩,并在假期对两组学生进行问卷调查,分析调查结果。结果：①期末测试结果：实验组学生的期末考试平均分为88.3,对照组学生的期末考试平均分为68．9,实验组明显优于对照组,差异具有统计学意义（P〈0．05）;②问卷调查结果：实验组92．28％的学生认为教学能够提高学习主动性,而对照组为69．36％;实验组88．61％的学生认为教学有助于提升对课程内容的理解,而对照组为66．19％;实验组93．45％的学生认为教学促进师生互动,而对照组为67．64％;实验组72．75％的学生认为教学可增强团队合作精神,而对照组为46．73％。实验组的调查结果明显优于对照组,差异具有统计学意义（P〈0．05）。结论：将多媒体技术引入人体解剖学课程的教学实践中,能够更好的帮助学生掌握人体解剖学的理论体系,提升教学质量,提高学生的专业知识水平。     

“四部曲式”趣味课堂提高生物化学教学质量

生物化学是很多高校的专业基础课程,具有概念多、代谢途径复杂等特点。传统的灌输式教学模式下,学生的学习难度很大,容易产生畏学情绪,导致学习效果不佳。通过开展课堂教学改革,构建问题导入、趣味讲解、技巧记忆、前沿拓展"四部曲式"趣味生化课堂:通过问题导入充分调动学生的好奇心和求知欲,通过趣味讲解和技巧记忆降低学习难度,通过前沿拓展加深对知识的理解,并锻炼学生的逻辑思维和应用知识解决问题的能力。在此基础上利用超星学习通等移动教学软件,通过签到、随机选人、讨论词云等活动活跃课堂气氛。以上举措可以将沉闷的生化课堂变得生动有趣,从而提高教学效果。