A direct ab initio calculation of network dynamics and diffusion both for the ground state and light excited state for a-Si:H was performed. In the light excited state there was observed enhanced hydrogen diffused and formation of new silicon dihydride configurations: (H-Si Si-H)2(H-Si Si-H) and SiH2. For the first time, we show the detailed dynamic pathways that arise from light induced occupa...

ferromagnetism: Co–ZnO versus Co–CeO2 Lubna R. Shah, Weigang Wang, Hao Zhu, Bakhtyar Ali, Y. Q. Song, H. W. Zhang, S. I. Shah, and J. Q. Xiao Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA School of Microelectronic and Solid-State Electronic, University of Electronic Science and Technology of China, Chengdu 610054, People’s Republic of China Materials Science and Eng...

Learning capabilities of computer systems still lag far behind biological systems. One of the reasons can be seen in the inefficient re-use of control knowledge acquired over the lifetime of the artificial learning system. To address this deficiency, this paper presents a learning architecture which transfers control knowledge in the form of behavioral skills and corresponding representation co...

We develop the algebraic theory of toric dynamical systems. These dynamical systems have the property that both their steady state loci and their moduli spaces are toric varieties. In the context of mass-action kinetics in chemistry, they are precisely the reaction networks that admit a complex balancing state. This steady state is unique within each invariant polyhedron. Toric dynamical system...

We present a multichannel quantum-defect theory for slow atomic collisions that takes advantages of the analytic solutions for the long-range potential and both the energy and angular momentum insensitivities of the short-range parameters. The theory provides an accurate and complete account of scattering processes, including shape and Feshbach resonances, in terms of a few parameters such as t...

A solution to the single level Shockley-Read-Hall rate equations developed recently is applied to two multiple level systems. The two systems considered are the multiple discrete level system and the ground excited state or coupled level system. It is shown that the solution to the differential rate equations for the two multiple level systems derived without an approximation lead to a consiste...

The Raman D-band feature ( 1350 cm ) is examined with 2.54 eV excitation for pure bulk carbon single-wall nanotube samples before and after treatments that increase defect densities. Upon employing mass-transport-limited oxidation to introduce defects, the D-band intensity increases approximately linearly with reaction time. A relatively constant ratio of the D-band intensity and the major tang...

Before paper is a finished product it may be reeled several times, both during the manufacturing process and after the main paper machine. A rereeler is an intermediate section in a paper making process that has its own unwind stand and rewinder, and is employed to ensure that the paper moving forward is as defect free as possible. Vibration, in general, has negative effects on the life of pape...

We present the Multichannel Quantum Defect Theory in its operatonal form and its application to the problem of Rydberg states of a diatomic molecule in extemal electnc fields. The theoretical analysis consists m the description of the close connection between the resolvent operator and the Density-Of-State matrix which defines the whole spectrum In the particular case of the discrete spectrum i...

This paper concerns Fredholm theory in several variables, and its applications to Hilbert spaces of analytic functions. One feature is the introduction of ideas from commutative algebra to operator theory. Specifically, we introduce a method to calculate the Fredholm index of a pair of commuting operators. To achieve this, we define and study the Hilbert space analogs of Samuel multiplicities i...