We consider a discrete-time quantum walk Wt,κ at time t on a graph with joined half lines Jκ, which is composed of κ half lines with the same origin. Our analysis is based on a reduction of the walk on a half line. The idea plays an important role to analyze the walks on some class of graphs with symmetric initial states. In this paper, we introduce a quantum walk with an enlarged basis and sho...

This article considers attempts to incorporate lessons and transfer policies from Britain in the reconstruction of Higher Education in Kosovo after 1999. In doing so, it employs aspects of the lesson-drawing framework developed by Rose (1991 and 2001) and the related concepts of policy transfer and policy diffusion. Drawing on contributions from anthropology and democratization studies, we sugg...

The Japanese lexicon consists of Japanese-origin words (WAGO), Chinese-origin words (KANGO) and words borrowed from English and other European languages (GAIRAIGO). The acquisition of words from three sources results in the abundance of near synonyms without any clear rules when a particular synonym should be used. Loveday has hypothesized that WAGO/KANGO and GAIRAIGO concrete nouns are used to...

We consider an inventory model for spare parts with two stockpoints, providing repairable parts for a critical component of advanced technical systems. As downtime costs for these systems are huge, ready-for-use spare parts are kept on stock, to be able to quickly respond to a breakdown of a system. We allow for lateral transshipments of parts between the stockpoints upon a demand arrival for a...

The 1+1 dimensional directed polymers in a Poissonean random environment is studied. For two polymers of maximal length with the same origin and distinct end points we establish that the point of last branching is governed by the exponent for the transversal fluctuations of a single polymer. We also investigate the density of branches.

This paper presents a knowledge-sharing framework for achieving effective knowledge reuse within industrial organisations. This knowledge re-use paradigm goes beyond traditional engineering re-use which focuses solely on re-applying tangible resources such as hardware components, software objects or information repositories in new situations. The Knowledge-Sharing Management (KSM) framework des...

In this article we address the problem of scheduling on realistic high performance computing facilities using incomplete information about tasks execution times. We introduce a variation of our previous Penalty Scheduling Policy, including an aging scheme that increases the priority of jobs over time. User-provided runtime estimates are applied as in the original Penalty Scheduling Policy, but ...

Current virtualization technologies enable hosting of a large number of Virtual Machines (VMs) on a common physical host. The hypervisor interconnects these VMs via Virtual Networks (VNs). These VNs underlie the same security requirements as physical networks. Network elements such as stateful firewalls contribute in enforcing this security. With the advent of stateful firewalls on the hypervis...

In this paper, a new preemption policy is proposed and complemented with an adaptive scheme that aims to minimize rerouting. The preemption policy combines the three main optimization criteria: number of LSPs to be preempted, priority of LSPs to be preempted, and amount of bandwidth to be preempted. The preemption policy is complemented by an adaptive scheme that selects LSPs with lower priorit...

We present a discovery of a giant stellar halo in NGC 6822, a dwarf irregular galaxy in the Local Group. This halo is mostly made of old red giants, showing striking features: 1) it is several times larger than the main body of the galaxy seen in the optical images, and 2) it is elongated in the direction almost perpendicular to the HI disk of NGC 6822. The structure of this stellar halo looks ...