570 research outputs found
High-speed, economical design implementation of transit network router
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.Includes bibliographical references (p. 88-90).by Kazuhiro Hara.M.S
Using the Sum of Roots and Its Application to a Control Design Problem
scholarly and technical work on a non-commercial basis. Copyright and all rights therein are maintained by the authors or by other copyright holders, notwithstanding that they have offered their works here electronically. It is understood that all persons copying this information will adhere to the terms and constraints invoked by each author’s copyright. These works may not be reposted without the explicit permission of the copyright holder. Parametric Polynomial Spectral Factorizatio
Suboccipital Approach for Primitive Trigeminal Artery Obliteration Associated with Cavernous Aneurysm
OBJECTIVE: A 63-year-old woman presented with diplopia resulting from abducens paralysis. Examination revealed a giant cavernous aneurysm supplied by the internal carotid artery (ICA) and primitive trigeminal artery (PTA) via the vertebrobasilar system. METHODS: After evaluation of balloon test occlusion (BTO) at the distal side of the PTA origin, the aneurysm was treated with PTA obliteration through the suboccipital route in the lateral position followed by cervical carotid ligation with superficial temporal artery-to-middle cerebral artery anastomosis in the supine position. RESULTS: The aneurysm showed marked shrinkage after the surgery. CONCLUSION: PTA obliteration through the retrosigmoid opening is a therapeutic surgical option in a patient with a cavernous aneurysm supplied by the PTA.ArticleWORLD NEUROSURGERY. 74(4-5):494-496 (2010)journal articl
Diffusion-based Holistic Texture Rectification and Synthesis
We present a novel framework for rectifying occlusions and distortions in
degraded texture samples from natural images. Traditional texture synthesis
approaches focus on generating textures from pristine samples, which
necessitate meticulous preparation by humans and are often unattainable in most
natural images. These challenges stem from the frequent occlusions and
distortions of texture samples in natural images due to obstructions and
variations in object surface geometry. To address these issues, we propose a
framework that synthesizes holistic textures from degraded samples in natural
images, extending the applicability of exemplar-based texture synthesis
techniques. Our framework utilizes a conditional Latent Diffusion Model (LDM)
with a novel occlusion-aware latent transformer. This latent transformer not
only effectively encodes texture features from partially-observed samples
necessary for the generation process of the LDM, but also explicitly captures
long-range dependencies in samples with large occlusions. To train our model,
we introduce a method for generating synthetic data by applying geometric
transformations and free-form mask generation to clean textures. Experimental
results demonstrate that our framework significantly outperforms existing
methods both quantitatively and quantitatively. Furthermore, we conduct
comprehensive ablation studies to validate the different components of our
proposed framework. Results are corroborated by a perceptual user study which
highlights the efficiency of our proposed approach.Comment: SIGGRAPH Asia 2023 Conference Pape
ギンザメChimaera phantasmaの精子形成について
Comparing with the fine structure of spermatogenic cell of selachians and oter vertebrates, that of the chimaera was observed with light and electron microscopes. The origin of chimaera testis differed essentially from that of selachians. However the chimaera had many resemblances to the selachians in the formation of the spermatozoon, except for the following two points; first, the X organ and the axial midpiece rod of the neck were amorphous and, second, there was only one accessory on the tail flagellum.ギンザメの精細胞の微細構造について,板鰓類並びに他の脊椎動物のそれと比較しながら,電子顕微鏡的観察を行った.精巣の起源は板鰓類のそれとは全く異なる.精子の形態は次の二点を除いて板鰓類とは多くの類似点を有する.すなわち,その相違点とは,頸部のXorganとaxial midpiece rodのいずれもが無構造であること,および尾部のアクセサリーが一つしかないことである
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