A New Partial Task Offloading Method in a Cooperation Mode under Multi-Constraints for Multi-UE

In Multi-access Edge Computing(MEC),to deal with multiple user equipment(UE)’s task offloading problem of parallel relationships under the multi-constraints,this paper proposes a cooperation partial task offloading method(named CPMM),aiming to reduce UE’s energy and computation consumption,while meeting the task completion delay as much as possible.CPMM first studies the task offloading of single-UE and then considers the task offloading ofmulti-UE based on single-UE task offloading.CPMMuses the critical path algorithmto divide the modules into key and non-key modules.According to some constraints of UE-self when offloading tasks,it gives priority to non-key modules for offloading and uses the evaluation decision method to select some appropriate key modules for offloading.Based on fully considering the competition between multiple UEs for communication resources and MEC service resources,CPMM uses the weighted queuing method to alleviate the competition for communication resources and uses the branch decision algorithm to determine the location of module offloading by BS according to the MEC servers’resources.It achieves its goal by selecting reasonable modules to offload and using the cooperation ofUE,MEC,andCloudCenter to determine the execution location of themodules.Extensive experiments demonstrate that CPMM obtains superior performances in task computation consumption reducing around 6%on average,task completion delay reducing around 5%on average,and better task execution success rate than other similar methods.

Compare and Contrast the Strengths and Weaknesses of Task-based Language Teaching Method and Audio Lingual Teaching Method and Study How They Impact Upon Both the Teachers and the Learners

This essay focused on comparing and contrasts audio lingual method and Task-based language teaching method,demonstrating the strengths and weaknesses of the two methods and discusses how they impact upon both the teachers and the learners.TBLT is the contemporary teaching method with a great number of strong points.It seems that if there is more relatively scientific and effective method,TBLT should give way to it.The ultimate goal is to advocate the comparatively successful teaching method in the field of foreign language education.

Consideration on Vocational Students' Participation in Class:With Special Reference to Task-based Approach and Traditional Method

This paper covers an experimental study on vocational students' participation in the class under task-based approach and traditional grammar-translation teaching method.As vocational colleges in China have developed rapidly,teachers are still exploring and experimenting with different teaching approaches in order to find the suitable one(s).Using the theory of task-based approach,the grammartranslation method,the author conducts an experiment by recording.The following key issue has been addressed and some conclusive results have been made.The paper intends to find an answer to the following question:Under which teaching approach can students participate in the class more actively? Based on the above research work,the following result has been reached:Task-based approach can promote students' mastering of vocabulary and grammar,and students participate in the class more actively.The author would like to share her experiences with others in pedagogical studies of teaching vocational college students English.

Non-complete relief method for measuring surface stresses in surrounding rocks

The measurement of surface stresses in surrounding rocks with the use of a relief method of annular hole-drilling was studied by numerical analysis. The stress relief process by hole-drilling was then simulated with the use of finite element method. The influences of the borehole diameter(d), the initial stresses and the ratio of the initial principle stresses on the variations of the remained stress and the released stress in function of the relief depth(h) were discussed. The relation between the non-dimensional ratio of the released principle strains and that of the initial principle stresses, and the effect of the elastic modulus and the Poisson ratio of the rock mass on the stress relief curves were studied. The results show that the stress relief behavior formulated with the non-dimensional ratio of the released stress and the ratio of h/d is only sensitive to the ratio of the initial principle stresses and the Poisson ratio. The stresses are completely released when h equals 1.6d, and the tensile stresses take place on the bore core surface in the relief measurement process. Finally, a non-complete relief method of annular hole-drilling for measuring surface stress in surrounding rocks is proposed and the procedure is presented.

Comparison of GUF and Monte Carlo methods to evaluate task-specific uncertainty in laser tracker measurement

Measurement uncertainty plays an important role in laser tracking measurement analyses. In the present work, the guides to the expression of uncertainty in measurement(GUM) uncertainty framework(GUF) and its supplement, the Monte Carlo method, were used to estimate the uncertainty of task-specific laser tracker measurements. First, the sources of error in laser tracker measurement were analyzed in detail, including instruments, measuring network fusion, measurement strategies, measurement process factors(such as the operator), measurement environment, and task-specific data processing. Second, the GUM and Monte Carlo methods and their application to laser tracker measurement were presented. Finally, a case study involving the uncertainty estimation of a cylindricity measurement process using the GUF and Monte Carlo methods was illustrated. The expanded uncertainty results(at 95% confidence levels) obtained with the Monte Carlo method are 0.069 mm(least-squares criterion) and 0.062 mm(minimum zone criterion), respectively, while with the GUM uncertainty framework, none but the result of least-squares criterion can be got, which is 0.071 mm. Thus, the GUM uncertainty framework slightly underestimates the overall uncertainty by 10%. The results demonstrate that the two methods have different characteristics in task-specific uncertainty evaluations of laser tracker measurements. The results indicate that the Monte Carlo method is a practical tool for applying the principle of propagation of distributions and does not depend on the assumptions and limitations required by the law of propagation of uncertainties(GUF). These features of the Monte Carlo method reduce the risk of an unreliable measurement of uncertainty estimation, particularly in cases of complicated measurement models, without the need to evaluate partial derivatives. In addition, the impact of sampling strategy and evaluation method on the uncertainty of the measurement results can also be taken into account with Monte Carlo method, which plays a guiding role in measurement planning.

采用量化任务驱动的混合式教学研究——以“电路原理实验”课程为例

线上线下混合式教学是目前高校常见的教学模式,但在其应用中学生的学习效果特别是线上部分难以保证。任务驱动式教学是一种通过任务来引导学生主动应用学习资源进行探究的教学方法。探索了在混合式教学中应用量化任务驱动的教学方法,教师预先对每一环节进行任务设定,且任务采用可量化评价的问卷或题目形式,形成清晰的评价目标,引导学生主动有效地学习。此方法在“电路原理实验”课程教改实践中取得了较好的效果。

神经外科临床带教中采取案例及任务驱动教学法的效果

目的探讨在神经外科临床带教中运用案例及任务驱动教学法进行带教的实施效果。方法选取2021年9月—2022年7月神经外科临床实习的80名学生为研究对象,将2021学年度采取传统教学法的40名学生纳入对照组,将2022学年度采取案例及任务驱动教学法的40名学生纳入研究组,对比教学效果调查结果、考核成绩、教学满意度评价以及评判性思维能力评分。结果教学前,2组教学效果比较,差异无统计学意义(P>0.05)。教学后,研究组解剖学知识的理解力、临床思维能力、主动学习积极性、解决临床问题能力、口头表达能力及期待临床实习评分均高于对照组,差异有统计学意义(P<0.001)。研究组理论考核、临床知识、病例分析评分均高于对照组,差异有统计学意义(P<0.001)。研究组基础知识理解、重点内容掌握、教学模式可行、学习兴趣、课堂气氛、教师教学热情以及师生互动评分均高于对照组,差异有统计学意义(P<0.001)。研究组评判性思维能力评分均高于对照组,差异有统计学意义(P<0.001)。结论神经外科临床带教采取案例及任务驱动教学法可激发学生学习兴趣,增加师生互动,可提高学生理论知识与操作技能,教学评价效果较好。

方剂学“任务申领考核法”的构建与运用

目的:构建符合方剂学教学规律的考核体系,为提高方剂学教学质量探索方法。方法:构建及实施“任务申领考核法”,将2020级中医专业的4个班级随机分为实验组(两个班98名)和对照组(两个班100名),实验组采用“任务申领考核法”进行考核,对照组采用单一的传统期末考核法,比较两组学生的期末成绩和辨证处方成绩;对实验组进行问卷调查分析。结果:实验组学生的期末平均成绩和辨证处方平均成绩优于对照组,差异均有统计学意义(P<0.05);调查问卷结果显示实验组学生对任务申领考核法的正面反馈明显高于负面反馈。结论:任务申领考核法的应用,能有效提高方剂学教学效果和学生学习能力。

任务申领考核法对学习主动性的影响——以方剂学课程为例

目的以方剂学课程教学为例,探讨“任务申领考核法”对学生学习主动性的影响。方法将2020级中医专业4个班级随机分为实验组(2个班,98名学生)和对照组(2个班,100名学生),实验组采用任务申领考核法,对照组采用单一的传统考核法。以问卷调查的方式,比较两组学生的教学反馈情况。结果问卷结果显示,实验组自我评价的正面反馈明显优于对照组,差异有统计学意义(P<0.05);且实验组内问卷调查结果显示学生对任务申领考核法评价较高。结论任务申领考核法可激发学生学习主动性,提高其学习能力。

基于CDIO-OBE理念的完井工程课程教学方法改革探究

完井工程是石油工程本科专业的主干课程之一,针对传统教学方式在石油人才培养中的现状及教学中存在的问题,提出基于CDIO-OBE理念的完井工程课程教学设计与实践,以提高学生自主学习、创新实践和团队合作的能力。该文通过对课前-课堂-课后三个教学活动阶段的方案设计,从理论教学、实践教学、考评模式等方面对完井工程课程教学模式进行创新,初步形成“课前线上预习、课堂理论学习、课后拓展实践和以赛促教”的教学模式。在CDIO-OBE特定理念背景下的教育过程,帮助学生树立职业道德、团队精神和分享意识,为应用型人才培养模式创新提供参考和启示。

智能完井系统液压控制管线特性分析

井内连续变化的地层温度会对智能完井系统液压控制管线内流体流动造成较大的影响.为了解决现有的连续方程、运动方程不能精确求解变温环境下液压管线内流体流动特性的问题,根据能量方程的定义,分析流体微元以及所采用的32号液压油特性,推导出一个特定形式的能量方程,再联立现有的连续方程、运动方程,得到一个新方程组,并利用特征线法(method of characteristics,MOC)结合MATLAB软件对新方程组进行计算求解.若干恒温条件与2种连续变温条件下的仿真结果显示,新方程组均比旧方程组求解精度高,验证了所推导的能量方程的合理性与准确性,证明其能用于恒温与变温环境下液压管线内流体流动问题的计算求解,进而推广至智能完井系统液压控制管线等问题的计算求解,对智能完井井下流量控制阀开启状态进行判断.研究结果可为智能完井系统液压控制等研究提供参考.

基于拟牛顿法的深度强化学习在车联网边缘计算中的研究

为了解决车联网中由于多任务和资源限制导致的任务卸载决策不理想的问题,提出了拟牛顿法的深度强化学习双阶段在线卸载(QNRLO)算法。该算法首先引入批归一化技术优化深度神经网络的训练过程,随后采用拟牛顿法进行优化,有效逼近最优解。通过此双阶段优化,算法显著提升了在多任务和动态无线信道条件下的性能,提高了计算效率。通过引入拉格朗日算子和重构的对偶函数,将非凸优化问题转化为对偶函数的凸优化问题,确保算法的全局最优性。此外,算法考虑了车联网模型中的系统传输时间分配,增强了模型的实用性。与现有算法相比,所提算法显著提高了任务卸载的收敛性和稳定性,并能有效处理车联网中的任务卸载问题,具有较高的实用性和可靠性。

大学英语口语教学中任务型教学法的研究应用与实践创新

任务型教学法是一种以学生为中心的教学方法,通过让学生完成真实的任务来促进语言学习。基于此,首先介绍任务型教学法的理论基础和主要原则,然后详细描述如何在大学英语口语教学中设计和实施任务。通过实证研究,发现任务型教学法可以提高学生的口语表达能力和学习动机。最后,讨论任务型教学法的优势和局限性,并提出了一些建议,以供教师在教学实践中参考。

任务驱动教学法在高职软件测试课程中的运用

随着现代计算机技术的全面发展,新型软件的广泛应用对软件质量和稳定性提出了更高要求。传统的理论教学法在实际操作能力培养方面的不足尤为突出。基于此,通过将教学内容与实际软件测试任务相结合,探讨任务驱动教学法在高职软件测试课程中的应用,提出任务设计、学生合作参与、实践测试与理论教学融合、反馈与评价的实施策略,使学生逐步掌握测试用例的设计、执行和评估等关键技能,以此提升学生的测试技能、问题解决能力及团队合作精神。研究结果显示,采用任务驱动教学法的软件测试课程显著提高了学生的学习效率和学习兴趣,有助于提升课程教学质量,满足行业对高素质技术人才的需求。

联邦边缘智能网络碳排放评估及优化

近年来,通信技术的持续演进导致通信网络的能耗显著增加。随着人工智能(AI,artificial intelligence)技术与算法在通信网络中的广泛应用和深度部署,未来6G智能通信网络架构和技术演进将对通信网络的节能减排带来更为严峻的挑战。基于边缘计算和分布式联邦学习的联邦边缘智能(FEI,federated edge intelligence)网络已被普遍认为是实现6G网络内生智能的关键路径之一。然而,如何评估和优化联邦边缘智能网络的综合碳排放量仍然是一大难题。为解决该问题,首先,提出了一种联邦边缘智能网络碳排放评估框架和方法。其次,基于该评估框架和方法提出3种联邦边缘智能网络碳排放优化方案,包括动态能量交易(DET,dynamic energy trading)、动态任务分配(DTA,dynamic task allocation)和动态能量交易与任务分配(DETA,dynamic energy trading and task allocation)。最后,通过自行搭建的真实硬件平台,并利用真实世界的碳强度数据集进行联邦边缘智能网络生命周期碳排放仿真。实验结果表明,3种优化方案均能在不同场景和约束条件下显著减少联邦边缘智能网络的碳排放,为下一代智能通信网络的可持续发展和实现绿色低碳6G网络提供了依据。

面向任务协同的异构多核嵌入式系统实时调度方法

以往的异构多核嵌入式系统实时调度方法由于仅设置了系统实时调度模型的单项参数,导致系统调度时间过长。本文设计了面向任务协同的异构多核嵌入式系统实时调度方法。面向任务协同构建嵌入式系统实时调度模型,计算系统任务节点的传输情况,构建系统实时调度的数学模型,对构建的实时调度模型中的任务数据信息进行汇集,并进行自适应分析处理,以此为基础,设置实时调度模型的时间均衡控制参数和安全性系数,从而实现嵌入式系统的实时调度。通过上述设计,完成对异构多核嵌入式系统实时调度方法的设计。在仿真实验中,与以往的异构多核嵌入式系统实时调度方法相比,本文设计的面向任务协同的异构多核嵌入式系统实时调度方法的调度时间最长仅为5 s,调度时间更短。

用文献-传播学方法开拓通俗小说研究新局面——《〈水浒传〉成书时间研究:以〈水浒传〉早期传播史料为中心》读后

在《〈水浒传〉成书时间研究:以〈水浒传〉早期传播史料为中心》一书中,作者采用文献-传播学的方法,对李开先《一笑散》、杨慎《词品》、张丑《真迹日录》、钱希言《戏瑕》、陆容《菽园杂记》、潘之恒《叶子谱》、熊过《故相国石斋杨公墓表》等《水浒传》早期传播史料加以考辨。此举兼具文献及其传播的时效性价值与历史性价值,有助于学界转变思路,客观讨论《水浒传》的成书时间。

行为m-NA随机变量阵列的完全收敛性

利用截尾方法和矩不等式,在更一般的条件下对m-NA阵列行和的收敛性进行了研究,并得到了m-NA阵列的完全收敛性.所得结果改进了文献[6]的研究结果。