Search results for "Lint"

Multicomponent relativistic dissipative fluid dynamics from the Boltzmann equation

2022

We derive multicomponent relativistic second-order dissipative fluid dynamics from the Boltzmann equations for a reactive mixture of $N_{\text{spec}}$ particle species with $N_q$ intrinsic quantum numbers (e.g. electric charge, baryon number, and strangeness) using the method of moments. We obtain the continuity equations for multiple conserved charges as well as the conservation equations for the total energy and momentum in the single-fluid approximation. These $4+N_q$ conservation laws are closed by deriving the second-order equations of motion for the dissipative quantities in the $(10+4N_q)$-moment approximation. The resulting fluid-dynamical equations are formally similar to those of …

First spatial isotopic separation of relativistic uranium projectile fragments

1994

Abstract Spatial isotopic separation of relativistic uranium projectile fragments has been achieved for the first time. The fragments were produced in peripheral nuclear collisions and spatially separated in-flight with the fragment separator FRS at GSI. A two-fold magnetic-rigidity analysis was applied exploiting the atomic energy loss in specially shaped matter placed in the dispersive central focal plane. Systematic investigations with relativistic projectiles ranging from oxygen up to uranium demonstrate that the FRS is a universal and powerful facility for the production and in-flight separation of monoisotopic, exotic secondary beams of all elements up to Z = 92. This achievement has …

High voltage conditioning of the electrostatic deflector of MARA

2016

Abstract MARA is a new recoil mass separator in the Accelerator Laboratory of University of Jyvaskyla (JYFL-ACCLAB) with a mass resolving power of 250 and an ion-optical configuration of QQQD E D M . In this paper the construction, control and conditioning of its electrostatic deflector are described. The deflector was designed for voltages up to 500 kV accross the gap, corresponding to a 3.6 MV/m field, to accomodate fusion reactions with inverse kinematics. Titanium electrodes with a beam dump opening in the anode are used. The conditioning procedure, which has been used repeatedly to take the deflector to 450 kV, is described, along with the safety systems and precautions that are in pla…

Territorial and socio-economic organisation in Le Grand-Pressigny

2012

In and around Le Grand-Pressigny (Indre-et-Loire, France), a petrographic study was implementedon 92 ceramic samples from the Final Neolithic sites of Le Petit-Paulmy and Bergeresse (Abilly).Analyses showed that the sediments used were extracted from local sources: Claise and Creusealluvium, local substrate and loessic silts. Quantitatively, the study showed that almost all the ceramicmaterials in Bergeresse and more than half of those in Le Petit-Paulmy come from the valley of theCreuse. The mineralogical compositions of three samples from Le Petit-Paulmy, including one ofunusual form, indicate sources from an exogenous region, the Massif Central (perhaps the alluviumof the Loire or the Al…

Sähköinen arkistointi ja pitkäaikaissäilytys Suomessa valmisohjelmistolla

2012

Arkistointi on hävittämisen taidetta. Kun työkalut ovat hallussa, tietää lainalaisuudet ja käytettävät standardit, voi keskittyä tähän taitolajiin, mitä säilyttää ja mitä hävittää. Tässä työssäni tarkastelen sähköisen arkistoinnin ja pitkäaikaissäilytykset peruskäsitteet, merkittävimmät standardit ja ohjelmistot. Lisäksi avaan lainalaisuuksia ja koitan selvittää kuinka lainsäädäntö säätelee sähköistä arkistointia. Tutkin kuusi suomessa toteutettua julkishallinnon arkistointi ja/tai pitkäaikaissäilytysratkaisua. Julkishallinnon asiakirjanhallinta ja arkistointi on selkeää, sitä ohjaa lainsäädäntö ja Arkistolaitos. Muiden täytyy ymmärtää ensin syyt, joiden takia arkistoidaan tietoa, sekä kaua…

XML-pohjaiset toimistodokumenttistandardit julkishallinnossa

2010

Inside service-intensive projects: Analyzing inbuilt tensions

2015

The purpose of this research is to identify typical professional and occupational groups in service-intensive projects, and illustrate the inbuilt tensions among them through the lens of institutional theory. The cases used for the study are a wind turbine business and a content management system project business. Our findings suggest that there are two professional groups (problem solvers, technology developers) and two occupational groups (lead generators, relationship developers) involved in these businesses. More importantly, their intergroup tensions are related to different institutionalized logics toward the conception of time (project temporality) and prioritization of different asp…

Public sector reputation and netpromoter score

2021

AbstractReputation of public sector organizations is increasingly formed through Word of Mouth (WOM) as citizens and stakeholders share their experiences with others both online and offline. Understanding and measuring WOM is a challenge for many public sector organizations, who often resort to measurement tools designed for the private sector. This paper looks at a popular WOM measurement tool, namely the Net Promoter Score (NPS) in the context of public sector organizations. In this paper, we ask how well does the NPS describe public sector reputation, and look at what the different stakeholder groups categorized by NPS are like in the public sector. As an illustrative case, we report fin…

Performance evaluation of OpenFlow enabled Commodity and Raspberry-pi Wireless Routers

2017

Software defined network (SDN) allows the decoupling of data and control plane for dynamic and scalable network management. SDN is usually associated with OpenFlow protocol which is a standard interface that enables the network controllers to determine the path of network packets across a network of switches. In this paper, we evaluate openflow performance using commodity wireless router and raspberry pi with two different SDN controllers. Our test setup consists of wired and wireless client devices connected to openflow enabled commodity wireless router and raspberry pi. All clients used traffic generator tool to transmits data to a sink server host. The results are promising and paves the…

Experiments on Concurrent Artificial Environment

2001

We show how the simulation of concurrent system is of interest for both behavioral studies and strategies of learning applied on prey-predator problems. In our case learning studies into unknown environment have been applied to mobile units by using genetic algorithms (GA). A set of trajectories, generated by GA, are able to build a description of the external scene driving a predators to a prey. Here, an example of prey-predator strategy,based on field of forces, is proposed. The evolution of the corespondent system can be formalized as an optimization problem and, for that purpose, GA can be use to give the right solution at this problem. This approach could be applied to the autonomous r…