1,286 research outputs found

    Interview with ChangSu Kim (Haya Sushi)

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    ChangSu Kim is the owner of Haya Sushi that immigrated to Sacramento, California from South Korea a few decades ago. He used to own a Dental lab up until (year) where he decided to sell that business and decided to open up his own sushi restaurant.https://digitalcommons.csumb.edu/asia-pacific-foodways_interviews/1003/thumbnail.jp

    Using VPS (VoxMap Pointshell) as the Basis for Interaction in a Virtual Assembly Environment

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    Realistic part interaction is an important component of an effective virtual assembly application. Both collision detection and part interaction modeling are needed to simulate part-topart and hand-to-part interactions. This paper presents a comparison of several common collision detection algorithms and examines the VoxMap Pointshell (VPS) method as it is used in an application to evaluate proposed assembly methods. Results from several performance tests on VPS are presented. VPS was found to provide realistic collisions and physicallybased modeling interaction with excellent performance. This paper concludes by presenting how VPS has been implemented to handle multiple dynamic part collisions and two-handed assembly using the 5DT dataglove in a projection screen virtual environment

    Collision Detection and Part Interaction Modeling to Facilitate Immersive Virtual Assembly Methods

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    Realistic part interaction is an important component of an effective virtual assembly application. Both collision detection and part interaction modeling are needed to simulate part-to-part and hand-to-part interactions. This paper examines several polygonal-based collision detection packages and compares their usage for virtual assembly applications with the Voxmap PointShell (VPS) software developed by the Boeing Company. VPS is a software developer’s toolkit for real-time collision and proximity detection, swept-volume generation, dynamic animation, and 6 degree-of-freedom haptics which is based on volumetric collision detection and physically based modeling. VPS works by detecting interactions between two parts: a dynamic object moving in the virtual environment, and a static object defined as a collection of all other objects in the environment. The method was found to provide realistic collision detection and physically-based modeling interaction, with good performance at the expense of contact accuracy. Results from several performance tests on VPS are presented. This paper concludes by presenting how VPS has been implemented to handle multiple dynamic part collisions and two-handed assembly using the 5DT dataglove in a projection screen virtual environment

    Physical chemistry of acid systems relevant to stratospheric ozone depletion

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    Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1994.Includes bibliographical references (leaves 80-86).by Judy E. Kim.M.S

    Fundamental Elements for Successful Performance of CT Colonography (Virtual Colonoscopy)

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    There are many factors affecting the successful performance of CT colonography (CTC). Adequate colonic cleansing and distention, the optimal CT technique and interpretation with using the newest CTC software by a trained reader will help ensure high accuracy for lesion detection. Fecal and fluid tagging may improve the diagnostic accuracy and allow for reduced bowel preparation. Automated carbon dioxide insufflation is more efficient and may be safer for colonic distention as compared to manual room air insufflation. CT scanning should use thin collimation of ≤3 mm with a reconstruction interval of ≤1.5 mm and a low radiation dose. There is not any one correct method for the interpretation of CTC; therefore, readers should be well-versed with both the primary 3D and 2D reviews. Polyps detected at CTC should be measured accurately and reported following the "polyp size-based" patient management system. The time-intensive nature of CTC and the limited resources for training radiologists appear to be the major barriers for implementing CTC in Korea

    Cryo-Electron Ptychography: Applications and Potential in Biological Characterisation

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    There is a clear need for developments in characterisation techniques that provide detailed information about structure-function relationships in biology. Using electron microscopy to achieve high resolution while maintaining a broad field of view remains a challenge, particularly for radiation sensitive specimens where the signal-to-noise ratio required to maintain structural integrity is limited by low electron fluence. In this review, we explore the potential of cryogenic electron ptychography as an alternative method for characterisation of biological systems under low fluence conditions. Using this method with increased information content from multiple sampled regions of interest, potentially allows 3D reconstruction with far fewer particles than required in conventional cryo-electron microscopy. This is important for achieving higher resolution for systems where distributions of homogeneous single particles are difficult to obtain. We discuss the progress, limitations and potential areas for future development of this approach for both single particle analysis and in applications to heterogeneous large objects

    Cryo-electron ptychography: applications and potential in biological characterisation

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    There is a clear need for developments in characterisation techniques that provide detailed information about structure–function relationships in biology. Using electron microscopy to achieve high resolution while maintaining a broad field of view remains a challenge, particularly for radiation-sensitive specimens where the signal-to-noise ratio required to maintain structural integrity is limited by low electron fluence. In this review, we explore the potential of cryogenic electron ptychography as an alternative method for characterising biological systems under low-fluence conditions. Using this method with increased information content from multiple sampled regions of interest potentially allows 3D reconstruction with far fewer particles than required in conventional cryo-electron microscopy. This is important for achieving higher resolution in systems where distributions of homogeneous single particles are difficult to obtain. We discuss the progress, limitations, and potential areas for future development of this approach for both single particle analysis and applications to heterogeneous large objects

    Understanding Parenting Styles of Second-Generation Parents of Residential School Survivors Within Treaty 8 Reserves

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    Approximately 150,000 First Nation, Metis, and Inuit children attended Canadian residential schools from the 1840s to 1996. Most residential school children had negative experiences of physical, verbal, and sexual abuse that led to parenting repercussions once these children became parents. These repercussions of residential schools led to a rate of neglect for First Nation children 12 times higher than non-First Nation children. The purpose of this qualitative phenomenological descriptive study was to explore the lived experiences of second generation parents, who were schooled in residential schools as children and their current parenting styles. The conceptual frameworks of trauma theory and family systems theory were used to understand the parenting styles of second-generation parents. Data were collected through one-on-one interviews with 20 second generation parents living within 10 Treaty 8 territory Woodland Cree reserves of Alberta, Canada. The interviews were audio recorded, transcribed, and coded using NVivo10 software to determine common themes. The themes were little affection, too much alcohol and substance abuse, lack of positive reinforcement, an abundance of household chores, coparenting with extended family and friends, and spanking, revolving privileges, and yelling as forms of discipline. Social change may occur through better understanding of the parenting styles of second-generation parents. Recommendations include making levels of government aware of the need for a program to aid second-generation parents in healing from their past trauma. Another recommendation is that First Nation curricula should include the history and legacy of residential schools to allow children and their parents to acknowledge the effects of colonialism on their lives today and, hopefully, to overcome them

    \u3ci\u3es\u3c/i\u3e-Extremal Additive \u3cb\u3eF\u3csub\u3e4\u3c/sub\u3e\u3c/b\u3e Codes

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    Binary self-dual codes and additive self-dual codes over F4 have in common interesting properties, for example, Type I, Type II, shadows, etc. Recently Bachoc and Gaborit introduced the notion of s-extremality for binary self-dual codes, generalizing Elkies\u27 study on the highest possible minimum weight of the shadows of binary self-dual codes. In this paper, we introduce a concept of s-extremality for additive self-dual codes over F4, give a bound on the length of these codes with even distance d, classify them up to minimum distance d = 4, give possible lengths and (shadow) weight enumerators for which there exist s-extremal codes with 5 ≤ d ≤ 11 and give five s-extremal codes with d = 7. We construct four s-extremal codes of length n = 13 and minimum distance d = 5. We relate an s-extremal code of length 3d to another s-extremal code of that length, and produce extremal Type II codes from s-extremal codes
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