Ilmars Slaidins - Academia.edu (original) (raw)

Papers by Ilmars Slaidins

publication.editionName, 2008

Abstract: This document is prepared to analyse the cooperation and good practice in Grid projects... more Abstract: This document is prepared to analyse the cooperation and good practice in Grid projects and describes BalticGrid project experience in cooperation and implementation of good practice

ICERI proceedings, Nov 1, 2017

... on TCP Throughput and Loss//Proc. of IEEE INFOCOM, 2003pp. 1744-1753 LaurisCikovskis. Born i... more ... on TCP Throughput and Loss//Proc. of IEEE INFOCOM, 2003pp. 1744-1753 LaurisCikovskis. Born in Riga and received MSc in Electronics from the Riga Technical University, Latvia in 2008. He is working as a research assistant ...

BalticGrid-II on the Way to Interoperability Olgerts Belmanis1, Ake Edlund2, Robert Palak3, Ilmar... more BalticGrid-II on the Way to Interoperability Olgerts Belmanis1, Ake Edlund2, Robert Palak3, Ilmars Slaidins1 1Riga Technical University 2Royal Institute of Technology in Stockholm 3Poznan Supercomputing and Networking Center Abstract Fast and non-coordinated development of regional ICT based e-Infrastructures creates challenges of interoperability. Now new projects and initiatives have started to make e-Infrastructures standards based, user friendly and interoperable. In this paper the BalticGrid II project is presented and the project efforts in the promotion of standards and to maintain interoperability of grid systems. The Baltic region is a relatively small geographic area where three major middlewares’ user communities overlap. There are gLite, ARC and Unicore. gLite is the dominant middleware used in the region due to the official status of it in the BalticGrid and BalticGrid-II projects. The key services of Grid are Job Submission, Information Services, Storage Management, Accounting, Job Monitoring, Database Access and Virtual Organization Management. BalticGrid-II project is promoted interoperation of the gLite-based infrastructure with UNICORE and ARC. Activity SA1 “Grid Operation” include the separate task to develop interoperation with UNICORE and ARC resources within the region. There are two solutions: interoperability and interoperation. Interoperability between these middlewares can be achieved organizationally and technically. Now BalticGrid-II use gLite and therefore is interoperable with EGEE. To provide progress MoU with KnowARC project and Unicore has been signed. The first important solution is Migrating Desktop. Developed by PSCN within Joint Research activity Migrating Desktop is advanced user friendly interface which provide interoperation between several production grids, based on various middlewares (e.g. gLite,,Unicore, ARC, i2g, GT4). Project partners are actively participating in e-IRG, OGF, EUGridPMA and EU Technical Groups of Grid and implementing accepted recommendations

Kluwer Academic Publishers eBooks, Feb 20, 2006

High accuracy of an experimental investigation of noise features of semiconductor devices and mat... more High accuracy of an experimental investigation of noise features of semiconductor devices and materials in low frequency region is very important for reaching deep understanding of noise features It will enable precise extracting of essential noise parameters and modelling noise behaviour of real devices.

BalticGrid – a step towards EGI Olgerts Belmanis, Ilmars Slaidins Riga Technical University Abstr... more BalticGrid – a step towards EGI Olgerts Belmanis, Ilmars Slaidins Riga Technical University Abstract After joining EU in 2004 process of integration of the Baltic States in European infrastructures and communities gained strength. One of urgent tasks was an integration of well developed computing and communication infrastructure of the Baltic States into the emerging grid computing based European e-Infrastructure. Aim of this paper is to present challenges and achievements of the Baltic Grid Project as a case study on development of grid computing and integration of existing research infrastructures and communities into common European Research Area. BalticGrid project first phase started in November 1, 2005 with 10 leading institutions in 6 countries. Baltic States joined the consortium with little experience in grid but in short time gained necessary expertise and created grid computing infrastructure. After the project first phase there were 17 operational grid computing clusters, 8 of them certified as production sites in EGEE. All necessary central services were deployed and at least doubled. The Baltic Grid Second Phase (BalticGrid-II) project started in May 1, 2008 and was designed to increase the impact of services and improve support of users of the recently created e-Infrastructure in the Baltic States and extend the BalticGrid infrastructure to Belarus. The consortium was composed of 13 leading institutions in seven countries, with 7 institutions in Estonia, Latvia and Lithuania, 2 in Belarus, 2 in Poland, and one each in Sweden and Switzerland. BalticGrid project was successfully completed in April 30, 2010. Aims and objectives of the Baltic Grid projects will be presented in the paper, as well as detailed analysis of achieved results in establishing sustainable e-Infrastructure in the Baltic States. Development of e-Infrastructure in the Baltic States was coordinated with the EU policy guidelines and based on best practice case analysis elsewhere in Europe and worldwide. Baltic States have computing infrastructure and well trained staff to interoperate at European level. The challenge for all Baltic States after the end of BG-II, EGEE and other collaborating project is to maintain sustainable grid infrastructure in European Research Area (ERA). The way of future Grid infrastructure and services sustainability was developed by the European Grid Initiative (EGI) Design Study project. Baltic Grid project partners also learned EGI DS goals as well as best practice from other grid projects. EGI will provide way to establish collaboration between number of computing infrastructure projects to meet needs and requirements of ERA. BG-II project established good contacts with industry. BalticGrid development policy defines the need for long-term sustainable collaboration to develop and maintain a core infrastructure that includes permanent services that are suitable for researchers from a variety of disciplines. To meet these objectives each country have established NGI based on NREN and joined EGI. EGI is the way towards a sustainable production grid infrastructure for Europe. Results obtained in the Baltic Grid project confirm readiness of partner institutions to collaborate within EGI and ERA to maintain sustainability

publication.editionName, 2010

Abstract: This document is prepared in the framework of NA4 activity as final report of BalticGri... more Abstract: This document is prepared in the framework of NA4 activity as final report of BalticGrid-II (BG-II) project on e-Infrastructure policy issues, as well as grid and cloud computing related standards progress and implementation. This document summarizes results obtained in the BG-II activities and related to policy and standards field. BG-II project e-Infrastructure development policy was based on strategic policy documents of EU Commission, policy coordinating organizations and the best practice cases of other projects and participation in forums and conferences. All BG-II partner countries except Belarus have joined EGI. Belarus has signed MoU with EGI. All project partners will continue to develop infrastructure based on EGI coordinated approach implementing network management and services through appropriate consortiums and Regional operation centres. Cloud implementation will be important part of long term strategy for joining the European e- Infrastructure and ERA

Grid Computing, 2007

Latvia, Estonia and Lithuania as new members of European Union now are involved in e-Science proj... more Latvia, Estonia and Lithuania as new members of European Union now are involved in e-Science projects. The Baltic Grid (BG) project is a first step to infrastructure development for e-Science grid computing. Together with the universities of Baltic States some universities and organisations of neighbouring countries are involved in BG project to disseminate their experience and management skills. This paper presents achievements and experience of BG project in e-infrastructure development in Baltic States and in Latvia and Riga Technical University, in particular

Zenodo (CERN European Organization for Nuclear Research), Apr 25, 2022

D2.8 Open Science (OS) policies and resource provisioning in the Nordic and Baltic countries (fin... more D2.8 Open Science (OS) policies and resource provisioning in the Nordic and Baltic countries (final report): This deliverable, the final report in an instalment of three on OS policies and resource provisioning, provides an updated assessment since the last deliverable, D2.5 OS policies and resource provisioning in the Nordic and Baltic countries-second report (Hammargren, Arvola, Rauste 2021). It reports on the fragmented status of OS policies, the different choices for provisioning infrastructure resources and services in the participating countries, and the progress to establish an EOSC perspective within their national policies.

2017 27th EAEEIE Annual Conference (EAEEIE), 2017

Latvia has a long-lasting tradition in education of Radio Engineers (now called Electronics Engin... more Latvia has a long-lasting tradition in education of Radio Engineers (now called Electronics Engineers). The Riga Technical University is the main institution providing education in electronics and related fields in the country. The e-learning portal ORTUS, based on Moodle, has been introduced at the Riga Technical University 10 years ago. It is used in all study programs since then thus facilitating wide introduction of blended learning. A short historical review on the developments in Electronics Engineering education at the Riga Technical University, legislation background of the academic and professional higher education in Latvia is presented. There will be also review of innovation introduced in the education methodology and technology via several local and international projects. The professional MSc program in Electronics Engineering containing the internship and the master thesis with a design project has been introduced since 2010.

This study reviews the current use of Open Educational Resources in Adult Education, assesses its... more This study reviews the current use of Open Educational Resources in Adult Education, assesses its potential and makes recommendations for policy interventions, taking account of the European Commission’s policy frameworks. It incorporates new research on over 12 Member States, leveraging on a synthesis of existing research from a range of projects including POERUP (Policies for OER Uptake) and a 2014-15 study on Shared OER for the Joint Research Centre, augmented by two more recent studies for JRC and LLP.

AIP Conference Proceedings, 2005

ABSTRACT In this work the methodology of measurement data processing and noise component identifi... more ABSTRACT In this work the methodology of measurement data processing and noise component identification is presented leading to extraction of /f noise parameters on the background of RTS and G-R noise. For identification of RTS noise presence deviation from the Gaussian probability density distribution and matched optimum filtering is used. Only after the identification and subtraction of RTS and R-G components from the power spectral density /f noise parameter extraction with appropriate accuracy is possible.

Modern distance learning and e-learning was introduced in Latvia some 15 years ago. E-learning de... more Modern distance learning and e-learning was introduced in Latvia some 15 years ago. E-learning development in Latvia was supported by the Programme „PHARE Multi-Country Programme in Distance Education”. Distance Education Study Centre at the Riga Technical University (RTU) was established in 1997. It paved a way to participation of RTU in several EU projects related to development and delivery of innovative distance and e-learning courses thus gaining expertise in methodology and technology of distance and e-learning course development including quality issues. In RTU strategy e-learning development is recognized as a way to enrich study process and improve quality of learning. Moodle based e-learning portal ORTUS has been created and fully integrated within the University ICT system. Strategic management is providing sustainable development of e-learning at the University based on synergy of research, innovation and quality assurance

Multiple Access with Collision Avoidance (CSMA/CA) protocol may cause inter-node interference, es... more Multiple Access with Collision Avoidance (CSMA/CA) protocol may cause inter-node interference, especially at higher data rates. To increase network throughput, the simultaneous distribution of data over multiple paths can be used. However this method ...

2022 31st Annual Conference of the European Association for Education in Electrical and Information Engineering (EAEEIE)

Abstract: Existing e-learning and knowledge management projects have shown that m-learning and mo... more Abstract: Existing e-learning and knowledge management projects have shown that m-learning and mobile knowledge management may have real and valuable contribution to development of knowledge society. The paper analyses and compares different m-learning and mobile knowledge management introduction scenarios based on evidence found in the literature. Special emphasis is given to the examination of current practices as they are found in m-learning and mobile knowledge management, similarities and differences are identified. The article attempts to find critical success factors for sustainable deployment in both m-learning and mobile knowledge management.

2017 Advances in Wireless and Optical Communications (RTUWO), 2017

Data transmission capacity of ad-hoc wireless networks could be increased by using multi-path tra... more Data transmission capacity of ad-hoc wireless networks could be increased by using multi-path transmission and minimising mutual interference between nodes. This approach could also be used to extend D2D communication opportunities in 5G. The objective of this paper is theoretical analysis and computer simulation to reveal the best conditions for combining smart antennas and multi-path transmission in wireless ad-hoc networks. It is shown that there is some data transmission capacity limit in multi-path ad-hoc network and it depends on the number of paths, number of hops in the path and number of elements in the smart antenna array.

Elektronika Ir Elektrotechnika, 2015

In many cases it is important for practical applications to determine 1/f noise parameters of BJT... more In many cases it is important for practical applications to determine 1/f noise parameters of BJT for SPICE model but their exact values could not be theoretically predicted and must be obtained from the measurements. In this paper error sources in determination of noise parameters from measurement data are discussed. Different bipolar junction transistor noise measurement circuits are analysed using simulation technique to determine the most favourable circuit configuration and bias conditions. Some specific cases and problems related to noise parameter extraction are discussed. Ill. 8, bibl. 8 (in English; summaries in Lithuanian, English and Russian).