Mixed methods, defined as one complete method (as the core project) plus a different simultaneous and sequential supplemental strategy, have been well explicated for combining the most difficult designs—that is, qualitative and quantitative methods. However, experts in qualitative inquiry have relatively ignored the issues that occur while describing qualitative simultaneous and sequential desi...

We have developed a remote control robot for searching for victims inside buildings during disasters. We used the approach of searching inside buildings by displaying a map. Concerning displays, several studies have been done on constructing 3D indoor maps from laser scan data acquired by a laser scanner. However, it is difficult to construct 3D maps in a vast or complicated space. Conventional...

We develop a mixed finite element method for single phase flow in porous media that reduces to cell-centered finite differences on quadrilateral and simplicial grids and performs well for discontinuous full tensor coefficients. Motivated by the multipoint flux approximation method where sub-edge fluxes are introduced, we consider the lowest order Brezzi-Douglas-Marini (BDM) mixed finite element...

Feature extraction is one of key technologies of the palmprint identification. In the light of the characteristics subspace palmprint identification technology, the two-dimensional principal component analysis, two-dimensional fisher linear discriminant and two-way two-dimensional principal component analysis algorithm is deeply analyzed. Based on two-dimensional subspace palmprint identificati...

We develop multiscale mortar mixed finite element discretizations for second order elliptic equations. The continuity of flux is imposed via a mortar finite element space on a coarse grid scale, while the equations in the coarse elements (or subdomains) are discretized on a fine grid scale. The polynomial degree of the mortar and subdomain approximation spaces may differ; in fact, the mortar sp...

In this article, we propose a new metaphorical framework for understanding and using mixed methods evaluation. Our re-conceptualization of mixing methods provides important insights into the theoretical and practical challenges of using a mixed method approach. Mixed methods can create philosophical and practical dilemmas in the ways data are collected, analyzed, interpreted and reported. We us...

In this paper we analyze the finite element discretization for the first-order system least squares mixed model for the second-order elliptic problem by means of using nonconforming and conforming elements to approximate displacement and stress, respectively. Moreover, on arbitrary regular quadrilaterals, we propose new variants of both the rotated Q1 nonconforming element and the lowest-order ...

We begin by apologizing for the lamentable omission of Professor Nelder’s interesting and controversial papers both in Lencina, Singer and Stanek (2005) and in Lencina and Singer (2006). Although the focus of our papers is much narrower than that of his articles, we feel that any manuscript touching the topic of parametrization and definition of hypotheses in linear mixed models should necessar...