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The IEEE 1904.1 standard: SIEPON architecture and model
Kramer, G.,Khermosh, L.,Daido, F.,Brown, A.,Hosung Yoon,Suzuki, K-I,Wang Bo Institute of Electrical and Electronics Engineers 2012 IEEE communications magazine Vol.50 No.9
<P>In a short time, IEEE EPON has progressed from initial trials to a market-leading optical access technology that supports business and residential services, including IPTV, VoIP, commercial- grade data services, and cellular backhaul. Due to EPON's simplicity and flexibility, various standards development organizations have embarked on standardization projects aimed at integrating EPON with existing network architectures. Also, several network operators have developed EPON solutions that address their specific deployment environments or relevant regulations. The IEEE P1904.1 SIEPON project is creating an open international system-level specification that provides for multivendor interoperability of EPON equipment while accommodating the rich and varied nature of the existing deployments and standards. The development of a unified EPON data path architecture is one of the key achievements of the SIEPON project. This flexible architecture supports multiple service models, multiple provisioning and management concepts, and diversity of deployment environments and regulatory requirements.</P>
Joint Angular Distribution of Bs → J/ψφ with Subsequent φ→ρπ and J/ψ → ℓ+ℓ- Decays
G.Kramer,H.S.Song,ChaehyunYu 한국물리학회 2002 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.41 No.5
The covariant density matrix formalism is used to obtain the joint angular distribution of the decay Bs ! J= (1020) with subsequent ! and J= ! `+``+``+` decays. The result is shown algebraically to be a special case of our previous work on the decay distribution of Bd ! J= K1(1270) with K1 ! K and J= ! `+` The covariant density matrix formalism is used to obtain the joint angular distribution of the decay Bs ! J= (1020) with subsequent ! and J= ! `+``+``+` decays. The result is shown algebraically to be a special case of our previous work on the decay distribution of Bd ! J= K1(1270) with K1 ! K and J= ! `+`
Charge and spin dynamics in the electron-doped high temperature superconducting cuprates
G. V. M. Williams,S. Kramer,R. Dupree 한국물리학회 2004 Current Applied Physics Vol.4 No.2-4
We show that the63Cu and17O NMR spin-lattice relaxation rates from the electron-doped high temperature superconducting cuprates (HTSC), Sr0:9La0:1CuO2 and Pr1:85Ce0:15CuO4 are consistent with antiferromagnetic spin uctuations in the CuO2 planes.However, unlike the hole-doped HTSC, there is no normal-state pseudogap or spin-gap. Furthermore, there is no evidence for aslowing down of the spin dynamics that is observed in underdoped and hole-doped HTSC and attributed to electronic phaseseparation. We also nd that the normal-state static spin susceptibility in Sr0:9La0:1CuO2 is only . 15% of that observed in the hole-doped HTSC.
Kramer Dallas E.,Kerolus Mena G.,Tan Lee A.,Patel Smita,Reddy Vijaya,Chen Michael 대한신경중재치료의학회 2020 Neurointervention Vol.15 No.3
Renal cell carcinoma (RCC) commonly metastasizes to the lung, liver, bones, and brain; however, cutaneous metastases remain rare with few reported cases. Since RCCs have the propensity to metastasize to highly vascular areas, the scalp and skin of the head and neck region are likely locations for cutaneous metastases. We report a rare case of a large, exophytic, cauliflower-like, hemorrhagic, metastatic mass of the posterior neck. This is the first reported case of a head and neck cutaneous RCC metastasis treated with endovascular embolization prior to surgical resection. Due to the increased vascularity of RCCs and risk of excessive hemorrhage during resection, adjunctive embolization of cutaneous head and neck metastasis may have a role. Essential characteristics to our treatment strategy are discussed with a review of pertinent literature.
Alternative optical concept for electron cyclotron emission imaging.
Liu, J X,Milbourne, T,Bitter, M,Delgado-Aparicio, L,Dominguez, A,Efthimion, P C,Hill, K W,Kramer, G J,Kung, C,Kubota, S,Kasparek, W,Lu, J,Pablant, N A,Park, H,Tobias, B American Institute of Physics 2014 Review of scientific instruments Vol.85 No.11
<P>The implementation of advanced electron cyclotron emission imaging (ECEI) systems on tokamak experiments has revolutionized the diagnosis of magnetohydrodynamic (MHD) activities and improved our understanding of instabilities, which lead to disruptions. It is therefore desirable to have an ECEI system on the ITER tokamak. However, the large size of optical components in presently used ECEI systems have, up to now, precluded the implementation of an ECEI system on ITER. This paper describes a new optical ECEI concept that employs a single spherical mirror as the only optical component and exploits the astigmatism of such a mirror to produce an image with one-dimensional spatial resolution on the detector. Since this alternative approach would only require a thin slit as the viewing port to the plasma, it would make the implementation of an ECEI system on ITER feasible. The results obtained from proof-of-principle experiments with a 125 GHz microwave system are presented.</P>