Design and implementation of split/merge operations for efficient multimedia file manipulation

Kim, Young‐Min; Woo, Youngsik; Lee, Hyeonsu; Seo, Euiseong

doi:10.1016/j.csi.2016.04.005

Cited by 3 publications

(1 citation statement)

References 6 publications

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“…Y. Kim et al [13] suggested merging and splitting operations for large-size multimedia files. In their study, the splitting operation divides a single file into two parts for a fast modification of a portion of a movie file, and a merging operation is used to form them into a single file.…”

Section: B Related Workmentioning

confidence: 99%

AvaTar: Zero-Copy Archiving With New Kernel-Level Operations

2020

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The problem associated with current file archiving systems is a slow processing time owing to unnecessary data copying. To address this problem, a novel archiving system with zero-copy merging and splitting operations, referred to as AvaTar, is presented herein. For the operations, instead of copying the data, the block allocation information of the files is manipulated at the kernel level. We implemented kernel-level archiving primitives in a Linux kernel, called AvaTar-FS, and a user-level archiving tool, called AvaTar agent. Our evaluation results indicated that AvaTar required only 0.48 s to extract 1,024 files from a 4 GB archive file, which is 132-times faster when compared with traditional GNU Tar archiving. AvaTar affords practical benefits in uploading files to a real-world cloud storage system, and successfully completes the transfer of 1,024 files to Amazon Web Service cloud storage within 60.55% of the processing time required through a traditional approach. INDEX TERMS Merging and splitting, archiving and extraction, zero-copy, file system, cloud storage system.

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Section: B Related Workmentioning

confidence: 99%

AvaTar: Zero-Copy Archiving With New Kernel-Level Operations

2020

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Improving creative problem solving performance of mathematics students by digital multimedia in graph theory course

Wahyuningsih

Satyananda

Qohar

2020

J. Phys.: Conf. Ser.

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Integrating learning through digital multimedia can be a disruptive learning innovation in high education. One subject in Mathematics that can has integration with the digital multimedia is graph theory. The reason is that some graph theory topics has application in the real world, hence students implementing these topics to solve problems can be analysed using creative problem solving (CPS) performance. Topics in Graph theory to be analysed by CPS are minimum spanning tree, traveling salesman problems and shortest path. Main objective of this study was to investigate the effect of the integration of digital multimedia to improve creative problem solving performance of mathematics students. Sequential mixed method was used in the study. Students are divided into 2 groups: experimental group that has integration of digital multimedia in the teaching-learning, and control group that has conventional learning. Phase of this study are 1) involving quasi-experimentation to determine the effect of the integration of digital multimedia to improve creative problem solving performance, and 2) exploration of creative problem solving performance through qualitative interviews. Instrument to measure creative problem solving are direct assessment using CPS indicators: understanding the challenge, generating ideas, preparing for action, and planning approach. Finding from this research is a significant increase creative problem solving performance of mathematics students by integrating graph theory course with digital multimedia. Student’s ability in generating ideas and preparing for action mostly is good. Student’s perception about the implementation of digital multimedia is that 67.7% of students very agree that learning activities improving creative problem solving. This digital multimedia implementation can be used as an alternative to disruptive learning innovation in mathematics learning.

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