نتایج جستجو برای: shells with kernels

تعداد نتایج: 9203764  

A. Nasiri Rad H. Rouhi R. Ansari,

In this paper, natural frequency and response of forced vibration of composite laminated conical shells under different boundary conditions are investigated. To this end, equations of Donnell's thin shell theory are used as governing equations. The analytical Galerkin method together with beam mode shapes as weighting functions is employed to solve the problem. Due to importance of boundary con...

H Molatefi M Gheisari, S.S Ahmadi

Third order shear deformation theory of cylindrical shells is employed to investigate the vibration characteristics of non-homogeneous cylindrical shells surrounded by an elastic medium. The kinematic relations are obtained using the strain-displacement relations of Donnell shell theory. The shell properties are considered to be dependent on both position and thermal environment. A suitable fun...

2018
Chuang Wu

In engineering applications, especially in the field of modern military defence, the cylindrical shells, conical shells and coupled conical-cylindrical shells are basically simplified models of many types of weapons and equipment, such as aircraft, missiles, and submarines. The study of free vibrational characteristics of cylindrical shells is comprehensive. Initially, researchers1-5 investigat...

Journal: :iranian journal of medical sciences 0
mohd lateef wani department of cardiovascular and thoracic surgery, sher-i-kashmir institute of medical sciences, srinagar, kashmir, india ab gani ahangar department of cardiovascular and thoracic surgery, sher-i-kashmir institute of medical sciences, srinagar, kashmir, india gh nabi lone department of cardiovascular and thoracic surgery, sher-i-kashmir institute of medical sciences, srinagar, kashmir, india shyam singh department of cardiovascular and thoracic surgery, sher-i-kashmir institute of medical sciences, srinagar, kashmir, india abdul majeed dar department of cardiovascular and thoracic surgery, sher-i-kashmir institute of medical sciences, srinagar, kashmir, india mohd akbar bhat department of cardiovascular and thoracic surgery, sher-i-kashmir institute of medical sciences, srinagar, kashmir, india

dec 2009 were studied. patients with vascular injuries caused by causes other than tear gas shells were excluded from the study. results: all patients were treated with reverse saphenous vein graft as segmental loss was less than 2.5 cm. wound infection was the most common complication, followed by graft occlu-sion. amputation rate was 16.66%. associated nerve injury occurred in 44.44% of the p...

2003
James T. Kwok Ivor W. Tsang

The kernel function plays a central role in kernel methods. Existing methods typically fix the functional form of the kernel in advance and then only adapt the associated kernel parameters based on empirical data. In this paper, we consider the problem of adapting the kernel so that it becomes more similar to the so-called ideal kernel. We formulate this as a distance metric learning problem th...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2011
Graziano Vernizzi Rastko Sknepnek Monica Olvera de la Cruz

Large crystalline molecular shells, such as some viruses and fullerenes, buckle spontaneously into icosahedra. Meanwhile multicomponent microscopic shells buckle into various polyhedra, as observed in many organelles. Although elastic theory explains one-component icosahedral faceting, the possibility of buckling into other polyhedra has not been explored. We show here that irregular and regula...

2017
Xin Ning Sergio Pellegrino

This paper presents an experimental study of imperfection insensitive composite wavy cylindrical shells subject to axial compression. A fabrication technique for making cylindrical shells with intricate shape of cross-sections has been developed. A photogrammetry technique to measure the geometric imperfections has also been developed. The behavior of the wavy shells under axial compression was...

2006
Jean-Philippe Vert

Classification of biological sequences with kernel methods Kernels and kernel methods Kernels for biological sequences Summary Outline 1 Kernels and kernel methods Kernels Kernel Methods 2 Kernels for biological sequences Motivations Feature space approach Using generative models Derive from a similarity measure Application: remote homology detection Jean-Philippe Vert Classification of biologi...

2004
Wei Li Jan A. Pechenik

The suspension-feeding slippersnail Crepidula convexa is commonly associated with hermit crabs (Pagurus longicarpus) living in periwinkle shells (Littorina littorea) at our study site in Nahant, MA, USA. In 15 field surveys conducted at Nahant in 2000, 2001 and 2003, we found that (1) more than 61.8% of individuals of C. convexa resided on shells occupied by hermit crabs, as opposed to the shel...

Liang Ni, Wei-Yong Shi

In this study, we measured the composition and free radical scavenging activity of several species of nuts, namely, Torreya grandis, Carya cathayensis,and Myrica rubra. The nut kernels of the aforementioned species are rich in fatty acids, particularly in unsaturated fatty acids, and have 51% oil content. T. grandis and C. cathayensis are mostly produced in ZheJiang province. The trace elements...

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