An adaptive parallel ant colony optimisation (PACO) algorithm on massively parallel processors (MPPs) is presented. In the algorithm, we propose a strategy for information exchange between processors that makes each processor choose a partner to communicate with and update their pheromone adaptively. We also propose a method of adaptively adjusting the time interval for the exchange of informat...

Abstract. Given a system (V, T, f, k), where V is a finite set, T ⊆ V , f : 2 → R is a submodular function and k ≥ 2 is an integer, the general multiway partition problem (MPP) asks to find a k-partition P = {V1, V2, . . ., Vk} of V that satisfies Vi∩T 6= ∅ for all i and minimizes f(V1)+f(V2)+ · · ·+f(Vk), where P is a k-partition of V if (i) Vi 6= ∅, (ii) Vi ∩ Vj = ∅, i 6= j, and (iii) V1 ∪ V2...

An important problem in statistical methods for marked point processes (MPPs) is to evaluate the relationship between points and marks, which can be developed under either the concept of independence or the concept of separability. Although both have been used, the connection between these two concepts is still unclear in the literature. The present article provides a way to evaluate such a con...

Maximum power point tracking algorithm is widely implemented in photovoltaic system to maximize the PV array output power. In general, Perturb and Observe (P&O) is simple thus being selected to continuously track the array maximum power point (MPP). Under uniform solar irradiance, PV array characteristic is non-linear and consisting only one MPP along the functional operating voltage. However, ...

In this study, simulation and hardware implementation of Fuzzy Logic (FL) Maximum Power Point Tracking (MPPT) used in photovoltaic system with a direct control method are presented. In this control system, no proportional or integral control loop exists and an adaptive FL controller generates the control signals. The designed and integrated system is a contribution of different aspects which in...

Hematopoietic stem and progenitor cells (HSPCs) can self-renew and create committed progenitors, a process supposed to involve asymmetric cell divisions (ACDs). Previously, we had linked the kinetics of CD133 expression with ACDs but failed to detect asymmetric segregation of classical CD133 epitopes on fixed, mitotic HSPCs. Now, by using a novel anti-CD133 antibody (HC7), we confirmed the occu...

In this paper, we present an interdisciplinary research project whose central objective is to develop new software engineering (SWE) methods for distributed memory parallel scientific computing. Our emphasis is on putting into practice and evaluating the proposed methods. The main test case for their definition and evaluation is the parallelization of an industrial CFD software package. A major...

The aim of this paper is to point out the difference between static and dynamic approaches to choosing the optimal time for intervention. The paper demonstrates that classical approaches, such as decision trees and influence diagrams, hardly cope with dynamic problems: they cannot simulate all the real-world strategies and consequently can only calculate suboptimal solutions. A dynamic formalis...

The identity of T-cell progenitors that seed the thymus has remained controversial, largely because many studies differ over whether these progenitors retain myeloid potential. Contradictory reports diverge in their use of various in vitro and in vivo assays. To consolidate these discordant findings, we compared the myeloid potential of 2 putative thymus seeding populations, common lymphoid pro...

MPI point-to-point communication is a basic operation, however it requires runtime-matching of send and receive that causes to reduce performance. This paper proposes a new approach to send messages by remote memory write without inquiring of the receiver under a communication pattern such that nonblocking receive is issued in advance. Basically, this approach makes it possible to gain low late...