Qing Han

Publication List Details

Period

1993 - 2007

Number

20

Co-Authors

Singular Sets Of Higher Order Elliptic Equations (2007)

Qing Han, Robert Hardt, Fanghua Lin

Introduction The implicit function theorem implies that the zero set of a smooth function, the set where the function vanishes, is a smooth hypersurface away from the critical zero set. Hence to...

Local solutions to a class of Monge-Ampère equations of mixed type (2007)

Han, Qing

In this article, we study a class of Monge-Ampère equations of mixed type which is elliptic in one side of a hypersurface and hyperbolic in another side. The degeneracy along the hypersurface is...

A GaAs monolithic anti-series varactor pair for voltage-controlled capacitance with reduced RF nonlinearity (2005)

Han, Qing, Shimura, Atsushi, Inagaki, Keizo, Ohira, Takashi, Akaike, Masami

This paper presents a trial fabricated GaAs monolithic anti-series varactor pair. Its second-order and third-order harmonic distortions, which are generated from the nonlinearity of...

A Compact Espar Antenna with Planar Parasitic Elements on a Dielectric Cylinder (2005)

HAN, Qing, HANNA, Brett, OHIRA, Takashi

This paper presents a technique for designing a dielectric Electronically Steerable Parasitic Array Radiator (Espar) antenna to achieve miniaturization of the conventional Espar antenna. The...

Perturbation Analysis and Experimental Verification of Intermodulation and Harmonic Distortion for an Anti-Series Varactor Pair (2005)

HAN, Qing, INAGAKI, Keizo, OHIRA, Takashi

Nonlinear distortions in an anti-series varactor pair (ASVP) are analyzed by a perturbation method. To the authors' knowledge, this paper presents the first derivation of an analytical expression...

Sooner and later waiting time problems for patterns in Markov dependent trials (2003)

Han, Qing, Hirano, Katuomi

In this paper, we investigate sooner and later waiting time problems for patterns S0 and S1 in multistate Markov dependent trials. The probability functions and the probability generating functions...

Local Isometric Embedding of Surfaces with Nonpositive Gaussian Curvature (2003)

Han, Qing, Hong, Jia-Xing, Lin, Chang-Shou

In this paper, we prove the existence of an isometric embedding near the origin in R3 of a two-dimensional metric with nonpositive Gaussian curvature. The Gaussian curvature can be allowed to be...

Linearity of homogeneous order one solutions to elliptic equations in dimension three (2002)

Han, Qing, Nadirashvili, Nikolai, Yuan, Yu

We prove that any homogeneous order one solution to 3-d nondivergence elliptic equations must be linear.

Level sets of solutions to differential equations / (1993)

Han, Qing.

Thesis (Ph.D.)--New York University, Graduate School of Arts and Sciences, 1993.

Joint Distributions of Runs in a Sequence of Multi-State Trials

Qing Han, Sigeo Aki

Run statistics, distributions of order k , probability generating function, Markov chain imbedding, multi-state trials, waiting time problem,

Sooner and Later Waiting Time Problems Based on a Dependent Sequence

Qing Han, Sigeo Aki

Binary sequence of order (k,r), binary sequence of order k , sooner and later waiting time problems, probability function, probability generating function,

Waiting Time Problems in a Two-State Markov Chain

Qing Han, Sigeo Aki

Waiting time problems, discrete distributions of order k , Markov chain, Markov chain imbedding method, probability generating function,

Waiting time problem for an almost perfect match

Han, Qing, Hirano, Katuomi

Given sequences of finite-state trials, an almost perfect match means that there exists at least k-1 matches between any subsequences of size k in each sequence. Let X1,X2,... be a sequence of...

Formulae and recursions for the joint distributions of success runs of several lengths in a two-state Markov chain

Han, Qing, Aki, Sigeo

Let X1, X2,...,Xn be a time-homogeneous {0, 1}-valued Markov chain. Let Y = (Y1,...,Yr) denote the r-dimensional random vector, where Yi(i = l,...,r) represents the number of success runs of length...