检索结果-内蒙古大学图书馆

Main Memory in program execution: Threshold Concept in CS

SN Computer Science 2025年第5期6卷 1-21页

作者： Kyriakou, Christina Gogoulou, Agoritsa Grigoriadou, Maria Department of Informatics and Telecommunications National and Kapodistrian University of Athens Athens Greece

Recent studies have shed light on the challenges students face in grasping certain aspects of computer science (CS) curricula. According to the threshold concepts theory, specific foundational ideas, if not thoroughly understood, can serve as cognitive barriers that hinder the comprehension of subsequent topics. Within this theoretical framework, the organization of main memory in program execution is suggested as a potential threshold concept in understanding computer operations. The present study aims to examine students’ understanding of topics related to main memory organization, operation, and its role in program execution. It seeks to categorize and elucidate students' conceptions and misconceptions through an analysis of their written responses to open-ended questions as well as through small-group discussions crafted to deepen insights. The development of questions grounded in Kintsch’s text comprehension model theory proved beneficial for uncovering students’ conceptualizations. The findings highlight a prevalent challenge among students in articulating the importance of main memory for computer operations and in establishing a conceptual link between main memory organization and the execution of program instructions. These findings underscore the significance of the proposed threshold concept. In response to the emerging misconceptions, CS educators should provide insight into students' comprehension and devise a comprehensive, integrated instructional approach to tackle the fundamental interrelated CS concepts. This paper offers guidance on approaching the existing educational material and crafting appropriate questions to bolster students' inferential skills and improve overall learning outcomes.

关键词： Introductory computer science courses Main memory Misconceptions program execution Threshold concepts

来源：评论

学校读者我要写书评

暂无评论

Using information obtained in the course of program execution for improving the quality of data type reconstruction in decompilation

引用

programMING AND COMPUTER SOFTWARE 2010年第6期36卷 343-362页

作者： Troshina, E. N. Chernov, A. V. Russian Acad Sci Inst Syst Programming Moscow 109004 Russia Moscow MV Lomonosov State Univ Dept Computat Math & Cybernet Moscow 119992 Russia

Methods of improving the decompilation quality, that is, the reconstruction of a program in a high-level language from a given program in a low-level language, are considered. Decompilation is considered as a reverse engineering problem;problems of decompilation quality are examined, and metrics for assessing this quality are proposed.

关键词： information data types high level language(hll) decompilation program execution Reconstructive Surgical Procedures language level

来源：评论

学校读者我要写书评

暂无评论

Verifying Full Regular Temporal Properties of programs via Dynamic program execution

引用

IEEE TRANSACTIONS ON RELIABILITY 2019年第3期68卷 1101-1116页

作者： Wang, Meng Tian, Cong Zhang, Nan Duan, Zhenhua Xidian Univ ICTT & ISN Lab Xian 710071 Shaanxi Peoples R China

Verification of programs at code level has attracted more and more attentions since the cost is high to extract models from source code. Most of approaches available for code level verification are carried out by inserting assertions into programs and then checking whether the assertions are violated. In this way, only safety properties can be verified, however, other temporal properties of programs such as liveness are hard to be verified. To tackle this problem, a novel runtime verification approach, which can verify full regular temporal properties of a program, is proposed in this paper. With this approach, a program to be verified is written in a modeling, simulation and verification language (MSVL) as a program M and a desired property is specified by a propositional projection temporal logic formula P. The negation of the desired property is then translated to anMSVL program M'. Thus, whether M violates P can be checked by evaluating whether there exists an acceptable execution of the new MSVL program "M and M'." This problem can efficiently be solved with the MSVL compiler where verification cases are generated via dynamic symbolic execution. Further, we adopt parallel mechanism to handle various execution paths of a program for improving the efficiency. The proposed approach has been implemented in a tool called MSV. Experiments show that the performance of MSV outperforms existing tools such as T2, RiTHM, and LTLAutomizer in verifying temporal properties of real-world programs.

关键词： MSVL program execution program verification software model checking temporal property

来源：评论

学校读者我要写书评

暂无评论

Full Regular Temporal Property Verification as Dynamic program execution 17

Full Regular Temporal Property Verification as Dynamic Progr...

引用

IEEE/ACM 39th International Conference on Software Engineering Companion (ICSE-C)

作者： Wang, Meng Tian, Cong Duan, Zhenhua ICTT & ISN Lab Xian 710071 Shaanxi Peoples R China

ISBN: (纸本)9781538615898

Verification of programs in code-level has attracted more and more attentions and considerable progress has been made in this area. The early research is limited to the verification of safety properties [1], [2], [3]. To do so, assertions are required to be instrumented in the program to be verified in advance, and the reachability of error labels is checked afterwards. In this way, safety properties can be verified. However, verification of other temporal properties such as liveness cannot be supported. Model checking temporal properties without executing code [4], [5], [6], [7] considers all possible behaviors, which makes a small program have a very large state-space. Thus, it is difficult to apply the approach to verifying programs in large scale. In addition, the approach is poor in accuracy and often produces unsound results. Runtime verification is pursued to check whether one or a few execution traces satisfy a given property by monitoring the execution of a system [8], [9]. Although it avoids the state-explosion problem, extracting information from a running system and sending them to monitors may generate a large runtime overhead. In a word, the techniques available are far more from mature in the field of temporal property verification of programs in code-level.

关键词： Dynamic program execution time characteristic Legal executions dynamic Verification program verification program execution running system

来源：评论

学校读者我要写书评

暂无评论

UMC4M: A Verification Tool via program execution 9th

UMC4M: A Verification Tool via Program Execution

引用

9th International Workshop on Structured Object-Oriented Formal Language (SOFL)+The Modeling, Simulation and Verification Language (MSVL) for Reliability and Security

作者： Wang, Meng Tian, Junfeng Zhang, Hong Hebei Univ Cyberspace Secur & Comp Coll Baoding 071000 Peoples R China

ISBN: (纸本)9783030414184;9783030414177

Most of the software model checkers available for code level verification can only verify safety properties since desired properties are specified by assertions. However, other temporal properties such as liveness cannot be verified with these tools. To tackle this problem, we develop a verification tool called UMC4M to verify full regular temporal properties of programs. UMC4M takes a modeling, simulation and verification language (MSVL) program M and a desired property specified by a propositional projection temporal logic (PPTL) formula P as its input. inverted left perpendicularP is then translated to an MSVL program M. Thus, the property can be verified by checking whether there is an acceptable execution of "M and M'", which can be solved with MSVL compiler MC. Further, UMC4M is used to verify the dining cryptographers protocol.

关键词： Software model checking Runtime verification Temporal property program execution

来源：评论

学校读者我要写书评

暂无评论

The influence of contract type in program execution/V-22 OSPREY: a case study

The influence of contract type in program execution/V-22 OSP...

引用

作者： Smith, Danny Roy Naval Postgraduate School

学位级别：硕士

The purpose of this study was to look at the impact of a fixed price type con- tract on program execution of a major weapon system. The full scale development phase of the V-22 Osprey program was used as a case study. The focus of this thesis was to determine the affects of this contract type and identify the actions program management took to address it's influences. The predominant conclusion brought out by this research was that based on the political, historical, and economic cir- cumstances of the period, the fixed price type contract was the best contractual instrument for the government to use. The major recommendations are: in future contracts, • Ensure an appropriate spread between ceiling and target price in order to adequately incentivize the contractor: • In teaming arrangements, employ incentives to guarantee the appropriate transfer of technical information; • Incentivize comprehensive production plans and Production Readiness Re- views.

关键词： V-22 Osprey program Pined Price Contracts program execution

来源：评论

学校读者我要写书评

暂无评论

Guiding Dynamic Symbolic execution toward Unverified program executions 16

Guiding Dynamic Symbolic Execution toward Unverified Program...

引用

38th IEEE/ACM International Conference on Software Engineering (ICSE)

作者： Christakis, Maria Mueller, Peter Wutholz, Valentin Swiss Fed Inst Technol Dept Comp Sci Zurich Switzerland

ISBN: (纸本)9781450339001

Most techniques to detect program errors, such as testing, code reviews, and static program analysis, do not fully verify all possible executions of a program. They leave executions unverified when they do not check certain properties, fail to verify properties, or check properties under certain unsound assumptions such as the absence of arithmetic overflow. In this paper, we present a technique to complement partial verification results by automatic test case generation. In contrast to existing work, our technique supports the common case that the verification results are based on unsound assumptions. We annotate programs to reflect which executions have been verified, and under which assumptions. These annotations are then used to guide dynamic symbolic execution toward unverified program executions. Our main technical contribution is a code instrumentation that causes dynamic symbolic execution to abort tests that lead to verified executions, to prune parts of the search space, and to prioritize tests that cover more properties that are not fully verified. We have implemented our technique for the. NET static analyzer Clousot and the dynamic symbolic execution tool Pex. It produces smaller test suites (by up to 19.2%), covers more unverified executions (by up to 7.1%), and reduces testing time (by up to 52.4%) compared to combining Clousot and Pex without our technique.

关键词： technique techniques detect program Technology program execution Legal executions analysis programme Verification TESTING TIME dynamic

来源：评论

学校读者我要写书评

暂无评论

The Forgotten Potential: Why Aspect-Oriented programming Faded Away

引用

COMPUTER 2025年第3期58卷 100-104页

作者： Kassab, Mohamad Fernandes, Joao Paulo Laplante, Phil Boston Univ Boston MA 02215 USA New York Univ Abu Dhabi Abu Dhabi U Arab Emirates Penn State Univ University Pk PA USA

This article investigates why aspect-oriented programming, once celebrated as a revolutionary programming paradigm, lost its traction. We examine its early achievements, the technical obstacles it faced, and the core ... 详细信息

关键词： Aspect Oriented programming Logistics System Software Modularity Software Development Large Scale Systems Object Oriented Debugging Error Handling Business Logic Microservices Core Reason Modular Units programming Paradigm Complex Systems Weaving Flow Control program execution Software Architecture

来源：评论

学校读者我要写书评

暂无评论

Dnriproving the scalability of Wearable Devices via Transparent Computing Technology

引用

COMPUTING IN SCIENCE & ENGINEERING 2017年第1期19卷 29-37页

作者： Yi, Letian Li, Jianbin Zhang, Yaoxue Cent S Univ Informat Secur & Big Data Res Inst Changsha Hunan Peoples R China Cent S Univ Comp Sci & Technol Changsha Hunan Peoples R China

A highly scalable system for power-efficient wearable devices, TCID (transparent computing-based intelligent device), leverages streaming to help applications for wearable devices obtain data from servers at runtime, ... 详细信息

关键词： Wearable Scalability Hyalin program execution Servers intelligent device Runtime Computing technology

来源：评论

学校读者我要写书评

暂无评论

Locally optimal algorithms for designing schedules based on hopfield networks

引用

programMING AND COMPUTER SOFTWARE 2003年第4期29卷 199-209页

作者： Kostenko, VA Vinokurov, AV Moscow MV Lomonosov State Univ Dept Computat Math & Cybernet Moscow 119992 Russia

Locally optimal algorithms for designing schedules for pro-ram execution on multiprocessors based on Hopfield networks are considered. Results of the numerical investigations of these algorithms are presented.

关键词： Hopfield neural networks Multiprocessor algorithms program execution Optimization algorithms

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：