Final publication is available at: http://journal.frontiersin.org/article/10.3389/fmicb.2015.00270/full / 付記する学位プログラム名：グローバル生存学大学院連携プログラム / 京都大学 / 0048 / 新制・課程博士 / 博士(医学) / 甲第19619号 / 医博第4126号 / 新制||医||1015(附属図書館) / 32655 / 京都大学大学院医学研究科医学専攻 / (主査)教授 中川 一路, 教授 木原 正博, 教授 松林 公蔵 / 学位規則第4条第1項該当 / Doctor of Medical Science / Kyoto University / DFAM

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The backbone of this dissertation is a discussion of the adaptability of optical fiber modes of transmission. The technological boom in commercial vehicles tends to include more electronic components and more data flow. The traditional copper transmission is reliable but has drawbacks. At present optical fiber, technology is in huge demand in fields like avionics, medicine, and communication across continents. The drastic shift to fiber was due to the enormous increase in capacity. Simultaneously the commercial vehicle sector is advancing in the direction of sensors that require a non-disruptive data flow. Furthermore, autonomous driving technology pushes the transition from copper to optic fiber. One expects optical fiber to supplant the traditional copper cables in the future. The dispersion and scattering losses need to be studied as well as the difference in cost.

The project deals on one hand with means of activation of the site trying to establish new connections in the city. One the other it tries to redefine standards of bath culture.

Rehabilitation of old industrial monument. Making program for reuse this construction. This proposition makes kind of memento from the past usage.

The pre-Hispanic archaeological site of Kuelap in Chachapoyas, Peru, is representative of the variation in mortuary practices observed throughout the Chachapoya region. The goal of this study was to analyze the human skeletal remains excavated in the center of the Circular Platform between residential structures at Kuelap by creating an inventory of the remains (n=2,573) and determine the minimum number of individuals originally interred in the mortuary context. This study observed a total of 171 femora, 159 humeri, 74 calcanei, 110 ilium bones, 86 temporal bones, and 74 maxillae. Results show that this mortuary context was an ossuary of secondarily, commingled remains of at least 75 individuals and it is a previously undescribed type of tomb at Kuelap. There were significant statistical differences between the expected adult MNI (n=47) and the actual MNI counts of the ilium and cranial bones. Based on its location and the large number of individuals, I argue that this secondary ossuary had special ritual meaning to the people at Kuelap. This research is anthropologically significant because Kuelap is a major archaeological site and the variability of mortuary practices demonstrates the complex ways that people in the past treated the dead.

This book reviewed investigates the negotiations of power between a political center, Venice, and its prized terraferma possession on the periphery, Brescia.

Selective encryption (SE) methods for images often encrypt the sign bits, i.e., the most significant bits (MSBs) of the codewords corresponding to key syntax elements (in compressed images) or to pixel intensities (for uncompressed images). Our work is motivated by the key observation that the binary code (BC) used for these representations has an impact on the quality of the reconstruction at the eavesdropper (Eve), which can be regarded as a measure of the degree of security of the encryption (the lower the quality, the higher the level of security). Therefore, we address the design of BCs that enhance the security of MSB-based SE by increasing the degradation at Eve’s side when she uses a simple replacement attack (replacing all MSBs either by 0s or by 1s). We first consider the scenario of fixed-length BCs, i.e., where all the codewords have the same length. We formulate the design problem as an optimization problem with the objective of maximizing the distortion at Eve’s without any constraint or with a constraint on the entropy of the MSBs in order to shorten the size of the MSB stream to reduce the computational overhead of encryption. We show that the problem can be cast as a binary integer linear program equivalent to a weighted non-bipartite graph matching problem, for which polynomial-time solution algorithms exist. We empirically assess the performance of the optimized BCs on a Mixed Gaussian source, as well as on Gaussian and Laplacian sources, the latter two being commonly used to model the distribution of transform coefficients and prediction residuals. Our experiments lead to the conclusion that MSB-based SE schemes could benefit from the proposed BC designs. For the case of uncompressed images, we also propose a family of structured BCs for the pixel intensity values. These BCs are constructed such that intensity values that are close have reconstructions that are far apart. As a result, the reconstruction with the replacement attack significantly destroys the smooth areas and blurs the edges, therefore increasing the degree of security. Next, we focus on the construction of variable-length BCs for the non-zero quantized AC coefficients in JPEG compressed images. For this, we first formulate the BC design problem as the problem of maximizing the distortion at Eve’s side with a constraint on the entropy. This problem can also be cast as a weighted non-bipartite graph matching problem and, therefore, can be solved efficiently. Furthermore, by gaining insights from the optimization results, a simpler and faster method for BC design is devised, which consists of only swapping a few codewords in the original code used in JPEG. We assess the practical performance of the proposed BCs for the SE method of JPEG images that encrypts only the MSBs of the non-zero quantized AC coefficients, along with the full encryption of the DC coefficients. Our experimental results show that high visual security can be achieved with only a small sacrifice in compression efficiency. In addition, the proposed BCs can be tuned to achieve various levels of degradation at Eve’s side, a property that is convenient for certain applications. / Thesis / Doctor of Philosophy (PhD)

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