Education•Taoyuan District, Taiwan•
About: Central Police University is a education organization based out in Taoyuan District, Taiwan. It is known for research contribution in the topics: The Internet & Steganography. The organization has 482 authors who have published 725 publications receiving 8358 citations. The organization is also known as: Zhōngyāng Jǐngchá Dàxué.
Papers published on a yearly basis
TL;DR: A new adaptive least-significant- bit (LSB) steganographic method using pixel-value differencing (PVD) that provides a larger embedding capacity and imperceptible stegoimages and when compared to the past study of Wu et al.'s PVD and LSB replacement method, the experimental results show that the proposed approach provides both larger embeding capacity and higher image quality.
Abstract: This paper proposes a new adaptive least-significant- bit (LSB) steganographic method using pixel-value differencing (PVD) that provides a larger embedding capacity and imperceptible stegoimages. The method exploits the difference value of two consecutive pixels to estimate how many secret bits will be embedded into the two pixels. Pixels located in the edge areas are embedded by a k-bit LSB substitution method with a larger value of k than that of the pixels located in smooth areas. The range of difference values is adaptively divided into lower level, middle level, and higher level. For any pair of consecutive pixels, both pixels are embedded by the k-bit LSB substitution method. However, the value k is adaptive and is decided by the level which the difference value belongs to. In order to remain at the same level where the difference value of two consecutive pixels belongs, before and after embedding, a delicate readjusting phase is used. When compared to the past study of Wu et al.'s PVD and LSB replacement method, our experimental results show that our proposed approach provides both larger embedding capacity and higher image quality.
TL;DR: The main purpose of this paper is to investigate the properties of the convexity of the total variable cost function of the inventory model of the deteriorating items under a permissible delay in payments.
TL;DR: A partial DNA sequence of cytochrome b gene was used to identify the remains of endangered animals and species endemic to Taiwan and proved to be usable for animal identification.
TL;DR: A review of all aspects of analysis associated with gunshot residues is provided in this article, including a summary of what both inorganic and organic residues are, how they arise and how they may be collected from a variety of substrates.
Abstract: A review of all aspects of analysis associated with gunshot residues is provided. This includes a summary of what both inorganic and organic residues are, how they arise and how they may be collected from a variety of substrates. Ways of processing samples to the point of analysis and the means by which they may be analyzed using a variety of techniques is discussed. The techniques described include SEM/EDX, flameless atomic absorption spectroscopy, neutron activation analysis, energy dispersive X-ray fluorescence and some other less common methods for inorganic residues and gas, high performance liquid and super critical fluid chromatography with speciality detectors including mass spectrometry together with capillary electrophoresis, for organic residues. A summary of how the results of such analyses may be interpreted is discussed under the different analytical techniques.
TL;DR: A novel FMEA model based on multi-criteria group decision-making, which is developed by integrating a rough best–worst method, and modified rough technique for order preference by similarity to an ideal solution for ranking failure modes, is proposed.
Showing all 485 results
|Peter C. Chu
|Ivan Y. Sun
|James Chun-I Lee
|Maarten Van Craen
|Patrick S. Chen
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