Quantum Gauss Jordan Elimination

In this paper we construct the Quantum Gau\ss Jordan Elimination (QGJE) Algorithm and estimate the complexity time of computation of Reduced Row Echelon Form (RREF) of an $N\times N$ matrix using QGJE procedure. The main theorem asserts that QGJE has computation time of order $2^{N/2}$

Descent methods for Nonnegative Matrix Factorization

In this paper, we present several descent methods that can be applied to nonnegative matrix factorization and we analyze a recently developped fast block coordinate method called Rank-one Residue Iteration (RRI). We also give a comparison of these different methods and show that the new block coordinate method has better properties in terms of approximation error and complexity. By interpreting this method as a rank-one approximation of the residue matrix, we prove that it \emph{converges} and also extend it to the nonnegative tensor factorization and introduce some variants of the method by imposing some additional controllable constraints such as: sparsity, discreteness and smoothness.Comment: 47 pages. New convergence proof using damped version of RRI. To appear in Numerical Linear Algebra in Signals, Systems and Control. Accepted. Illustrating Matlab code is included in the source bundl

Generalized diffusion theory of micromorphicly deformable particle-fluid continuum and bubble-liquid two-phase flows

In the paper [1] the basic concepts and equations were derived for the micromorphicly deformable particle-fluid two-phase flows, the constitutive equations have been constructed. The flow us fluid with deformable spherical particles, when the particle only expands radially, rotates and translates, is considered in this paper. For this case one can obtain the full motion's equations system. These equation together with the constitutive equations are sufficient to determine all of unknowns, and they can be used to study the bubble- liquid two-phase flow. The problems of kinematic wave and acoustic wave propagation in the bubble-liquid two-phase flow is studied

Factors Affecting Credit Growth of Vietnamese Commercial Banks

This research analyzes the factors that affect the credit growthof the Vietnamese commercial banking system. This study usedata from the annual reports and financial statements of 16commercial banks listed on the HOSE, HNX, and UPCOMexchanges that have operated continuously from 2011 to 2020.Two linear regression models were employed with two dependentvariables: the credit growth rate and credit size. The findingsindicate that credit size in the previous period, the annualgrowth rate of capital mobilization, bank size, and return onassets (ROA) positively affect the credit growth of Vietnamesecommercial banks while liquidity ratio negatively affects them.Also, the bad debt ratio’s effect on credit growth is unclear. Hence,some suggestions and recommendations are given for commercialbanks to maintain stable, safe, and sustainable credit growth.JEL Classification: G21, E50, E5

Quorum sensing-controlled gene expression in lactic acid bacteria

Quorum sensing in lactic acid bacteria (LAB) involves peptides that are directly sensed by membrane-located histidine kinases, after which the signal is transmitted to an intracellular response regulator. This regulator in turn activates transcription of target genes, that commonly include the structural gene for the inducer molecule. The two-component signal-transduction machinery has proven to be indispensable for transcription activation and production of several autoinducers found in LAB, which are predominantly bacteriocins or bacteriocin-like peptides. In the nisin autoregulation process in Lactococcus lactis the NisK protein acts as the sensor for nisin and the NisR protein as the response regulator, activating transcription of target genes. The cis-acting elements for NisR were identified as the nisA and nisF promoter fragments and these were further analysed for inducibility. Based on this knowledge efficient nisin-controlled expression (NICE) systems were developed for several different lactic acid bacteria. A promising application of the NICE system is the development of autolytic starter lactococci, which will lyse in an early stage during cheese ripening thereby facilitating the release of intracellular enzymes which can contribute to flavour formation.

Generalized diffusion theory of hydrodynamical particle migration in suspensions. Part 1: The case of equal densities

The general continuum theory has been developed for two-phase flows of fluid with deformable particles, where the micro-deformation of particles and the relative motion between phases have been taken into account [1-3]. This paper is concerned with using the simplest model from developed general theory for modeling of particle migration in suspensions- one of the most important and complicated aspects of particle-liquid two-phase flows, that has been observed and studied by many authors. For this purpose it is considered the motion of Newtonian fluid-rotating rigid spherical particles two-phase continuum with specialized nonlinear constitutive equations, when the particle and fluid have equal densities. The obtained equation system has been used for studying quantitatively particle migration problem in the circular Couette flow

Nature, Self, and Being in the World: Revealing a Flourishing Ethics in Landscape Architecture through Poignant Landscape Experiences

Poignant landscapes are gateways to our existential belongingness because they allow us to be moved by the world. Landscape architects have the potential to shape the worlds landscapes, as settings for poignant life experiences, and yet, an issue lies in the praxis of the profession. Contemporary landscape architecture and environmental ethics, as part of contemporary society, are enmeshed in binary narratives. Because interpretations of landscapes are inseparable from notions of nature, which hermeneutically carry existential stories of human-world relationships, when an enigmatic natural world was abandoned for the objectivity of biology and space, the worldview of landscapes also split into binary narratives of human versus nature, sacred versus profane, and poetic versus practical. Moreover, with the expansion of secularism and nondualist cosmologies such as Daoism and Indigenous teachings into the Western world, polarised moral judgements, which are loosely based on past Christian narratives, become paradoxical and unsupportive towards resolving contemporary social and ecological disputes. Therefore, this project argues for an approach to ethics based on the idea of flourishing, which sees morality as relational and that ethical individuals make autonomous choices to flourish within a world of social and ecological systems. To return to the roots of being, this research asks landscape architects what a flourishing life and a flourishing environment really means to them. Poignant experiences with landscapes are used to provoke memory and awareness of being in the world and the sense of connectivity with other existences in the human, ecological, or spiritual worlds. Through the analysis of professional codes and mandates, a survey of landscape architects, and interviews with flourishing landscape architects, the research explores how the landscape architect, as a professional identity and as an archetype in the collective consciousness, is interpreted, performed, and communicated in landscape architecture. A hermeneutic approach was used to unravel concepts of nature, landscape, experience, poignancy, and ethical choice-making. The analysis reveals that a reflexive process that is simultaneously personal and collective can increase experiential awareness, expand horizons for meanings, and create opportunities for shifting paradigms essential to achieving a sense of human belongingness in the world

Some hydrodynamic problems for flood forecasting and flood control in the Red river system

My research development activity in the field of environmental natural fluid mechanics has been started after one year's working visit, proposed by Prof. Nguyen Van Dao, at the Laboratoire National d'Hydraulique de France in Chatou, France (1979-1980). Until now this activity is still a most important one.In the paper it is presented some selected scientific results in one of hydrodynamic problems for flood forecasting and flood control: developing of the 1D hydraulic model, 1D quasi 2D model, 1D hydraulic model for dam break flow , 2D hydraulic model, coupling of 1D and 2D hydraulic models and some theirs applications for flood forecasting and flood control in the Red River System.This paper is dedicated to the memory of Prof. Nguyen Van Dao, with whom I had a big chance to work and to collaborate during about 30 years, to whom I would like to express my heartfelt thanks