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Search Results: 1 - 10 of 374637 matches for " Michael C. Wang "
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Low Power Dual Word Line 6-Transistor SRAMs
Michael C. Wang
Lecture Notes in Engineering and Computer Science , 2009,
Low Power, Area Efficient FinFET Circuit Design
Michael C. Wang
Lecture Notes in Engineering and Computer Science , 2009,
Independent-Gate FinFET Circuit Design Methodology
Michael C. Wang
IAENG International Journal of Computer Science , 2010,
Discovery Signal Design and Its Application to Peer-to-Peer Communications in OFDMA Cellular Networks
Michael. Wang,C. Jiang
Mathematics , 2012,
Abstract: This paper proposes a unique discovery signal as an enabler of peer-to-peer (P2P) communication which overlays a cellular network and shares its resources. Applying P2P communication to cellular network has two key issues: 1. Conventional ad hoc P2P connections may be unstable since stringent resource and interference coordination is usually difficult to achieve for ad hoc P2P communications; 2. The large overhead required by P2P communication may offset its gain. We solve these two issues by using a special discovery signal to aid cellular network-supervised resource sharing and interference management between cellular and P2P connections. The discovery signal, which facilitates efficient neighbor discovery in a cellular system, consists of un-modulated tones transmitted on a sequence of OFDM symbols. This discovery signal not only possesses the properties of high power efficiency, high interference tolerance, and freedom from near-far effects, but also has minimal overhead. A practical discovery-signal-based P2P in an OFDMA cellular system is also proposed. Numerical results are presented which show the potential of improving local service and edge device performance in a cellular network.
The N-eigenvalue Problem and Two Applications
Michael Larsen,Eric C. Rowell,Zhenghan Wang
Mathematics , 2005, DOI: 10.1155/IMRN.2005.3987
Abstract: We consider the classification problem for compact Lie groups $G\subset U(n)$ which are generated by a single conjugacy class with a fixed number $N$ of distinct eigenvalues. We give an explicit classification when N=3, and apply this to extract information about Galois representations and braid group representations.
Twelve-year survival after multiple recurrences and repeated metastasectomies for renal cell Carcinoma
Jue Wang, Geoffrey A Talmon, Michael Feloney, Michael C Morris
World Journal of Surgical Oncology , 2011, DOI: 10.1186/1477-7819-9-155
Abstract: We report a case of a 62-year-old woman who underwent nephrectomy for T4N0 RCC, clear cell type, Fuhrman grade 3/4 in 1999. The patinet subsequently had multiple tumor recurrences.The patient underwent eight metastasectomies, including multiple partial left nephrectomies, right adrenalectomy, a complete left nephrectomy, and distal pancreatectomy. She remains well and tumor free 12 years after initial diagnosis.Repeated resections after initial metastasectomy can be carried out safely and provide long-term survival in selected patients with recurrent metastasis from RCC. The findings from our case indicate that close follow-up for the early detection of recurrence and complete resection of metastases can improve the results after repeated resection.Renal cell carcinoma (RCC) accounts for 3% of adult malignancies and 90% of neoplasms arising from the kidney [1]. It is the sixth leading cause of cancer death in the USA [2]. Approximately one-third of patients diagnosed with RCC in the modern era are found to have metastatic disease upon presentation, while at least an additional one-third of all patients undergoing nephrectomy for apparent clinically localized disease will go on to develop metastatic disease [3,4]. The median time before a relapse after nephrectomy is 15 months, and 85% of relapses occur within 3 years [5]. Frequent sites include the lungs (75% of cases), regional lymphatic nodes (65%), bone (40%), liver (40%) and brain (5%) [4]. Unusual sites of metastases can be involved, including the thyroid, pancreas, skeletal muscle and skin or underlying soft tissue. Untreated patients with metastatic RCC have a median survival of 6 to 12 months and a 5-year survival rate of < 20%. Shorter interval between nephrectomy and the development of metastases is associated with a poorer prognosis [4]. Late tumor recurrence occasionally occurs many years after initial treatment.The role of metastasectomy for the treatment of metastasis from RCC is widely accepted [6]. H
Anion receptors containing thiazine-1,1-dioxide heterocycles as hydrogen bond donors
Hong-Bo Wang,James A. Wisner,Michael C. Jennings
Beilstein Journal of Organic Chemistry , 2010, DOI: 10.3762/bjoc.6.50
Abstract: The synthesis, X-ray crystal structures and anion recognition properties of two receptors containing thiazine-1,1-dioxide heterocycles as hydrogen bond donating subunits are reported. The newly synthesized receptors display much different anion selectivities in acetone-d6 than N,N′-diphenyl-1,3-disulfonamidobenzene that was used as a comparison. The selectivity exhibited by one of the new receptors for chloride anions can be attributed to greater steric demand in the cleft formed, in part, by its terminal phenyl rings; an effect that is absent in the comparison receptor.
Cyclotron Line Formation in a Relativistic Outflow
Michael Isenberg,D. Q. Lamb,John C. L. Wang
Physics , 1996, DOI: 10.1063/1.51661
Abstract: There is mounting evidence that, if gamma-ray bursters are Galactic in origin, they are located in a Galactic corona at distances greater than 100 kpc. This has created a need to explore new models of cyclotron line formation. In most previous calculations the line-forming region was modeled as a static slab of plasma, optically thin to continuum scattering, and threaded by a magnetic field of the order $10^{12}$ gauss oriented normal to the slab. Such a model is appropriate, for example, for the magnetic polar cap of a neutron star with a dipole field. However, if bursters lie at distances farther than several hundred parsecs, the burst luminosity exceeds the magnetic Eddington luminosity, and the plasma in a line-forming region at the magnetic polar cap would be ejected relativistically along the field lines. Mitrofanov and Tsygan have modeled the dynamics of such an outflow, and Miller {\it et al.} have calculated the properties of the cyclotron second and third harmonics, approximating them as due to cyclotron absorption. Here we describe Monte Carlo calculations of cyclotron resonant scattering at the first three harmonics in a relativistic outflow from the magnetic polar cap, and show that such scattering can produce narrow lines like those observed by Ginga.
Single-image measurements of monochromatic subdiffraction dimolecular separations
Shawn H. DeCenzo,Michael C. DeSantis,Y. M. Wang
Physics , 2010, DOI: 10.1016/j.bpj.2009.12.3203
Abstract: Measuring subdiffraction separations between single fluorescent particles is important for biological, nano-, and medical-technology studies. Major challenges include (i) measuring changing molecular separations with high temporal resolution while (ii) using identical fluorescent labels. Here we report a method that measures subdiffraction separations between two identical fluorophores by using a single image of milliseconds exposure time and a standard single-molecule fluorescent imaging setup. The fluorophores do not need to be bleached and the separations can be measured down to 40 nm with nanometer precision. The method is called single-molecule image deconvolution -- SMID, and in this article it measures the standard deviation (SD) of Gaussian-approximated combined fluorescent intensity profiles of the two subdiffraction-separated fluorophores. This study enables measurements of (i) subdiffraction dimolecular separations using a single image, lifting the temporal resolution of seconds to milliseconds, while (ii) using identical fluorophores. The single-image nature of this dimer separation study makes it a single-image molecular analysis (SIMA) study.
Effects of the Geometry of the Line-Forming Region on the Properties of Cyclotron Resonant Scattering Lines
Michael Isenberg,D. Q. Lamb,John C. L. Wang
Physics , 1997, DOI: 10.1086/306171
Abstract: We use a Monte Carlo radiative transfer code to examine the dependence of the properties of cyclotron resonant scattering lines on the spatial geometry and the optical depth of the line-forming region. We focus most of our attention on a line-forming region that is a plane-parallel slab. We also consider a cylindrical line-forming region. In both cases, the line-forming region contains an electron-proton plasma at the equilibrium Compton temperature, $T_c$, and is threaded with a uniform magnetic field with strength $\sim 10^{12}$ gauss. We consider geometries in which the photon source illuminates the line-forming region from below, and in which the photon source is embedded in the line-forming region. Our findings have implications for accretion-powered pulsars and gamma-ray bursters. In particular, the absence of pronounced shoulders on each side of the cyclotron first harmonic line in the spectra of accretion-powered pulsars suggests that the line-forming region is either illuminated from below and outside, as would be the case if it were plasma suspended in the magnetosphere of the neutron star, or it has a large ($\tau_{To} \gtrsim 10$) optical depth. Also, the ability of a slab line-forming region in which the magnetic field is parallel to the slab to produce narrow lines with large $W_E$ suggests that the lines observed in the X-ray spectra of some gamma-ray bursts might be able to be formed in plasma trapped at the magnetic equator of a neutron star.
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