helsinki university Resources

Related Tags: University of Helsinki (5 results)

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Cloud Computing With the Azure Platform: Software industry is heading towards centralized computing. Due to this trend data and programs are being taken away from traditional desktop PCs and placed in compute clouds instead. Compute clouds are enormous server farms packed with computing power and storage space accessible through the Internet. Instead of having to manage...; Tags: Cloud Computing, Helsinki University, Computing, Software Industry, Storage, Hardware; White papers 2009-04-27
Filtering SPAM in P2PSIP Communities With Web of Trust: Spam is a dominant problem on email systems today. One of the reasons is the lack of infrastructure for security and trust. As Voice over IP VoIP communication becomes increasingly popular, proliferation of spam calls is only a matter of time. As SIP identity scheme is practically similar to email,...; Tags: Web, Helsinki University, E-mail, Session Initiation Protocol (SIP), Telephony, VOIP, Telecommunications, Security, Online Communications, Emerging Technologies, Networking; White papers 2009-04-17
Macadamia: Master's Programme in Machine Learning and Data Mining: The research focus has since shifted from neural networks to machine learning, algorithmic data analysis and data mining. Macadamia is a two-year master's programme for machine learning and data mining given in the Department of Information and Computer Science at Helsinki University of Technology. This paper describes its curriculum and...; Tags: Helsinki University, Macadamia, Data Mining, Business Intelligence, Marketing Research, Databases, Enterprise Software, Software, Data Management, Marketing; White papers 2008-04-30
Public Web Services Interfaces of Social Web: Most of the major social websites allow users and third party developers access the content of the website and use it externally. Many of them also allow modifying the data from outside. Despite that the methods for doing this are not complex, there are many of them and they are...; Tags: Web, M2M, Web Service, Helsinki University, Social Web, Web Site, Web Site Development, Web Technology, Internet; White papers 2008-04-08
Near-Optimal Load Balancing in Dense Wireless Multi-Hop Networks: This paper considers the load balancing problem in wireless multi-hop networks. In the limit of a dense network, there is a strong separation between the macroscopic and microscopic scales, and the load balancing problem can be formulated as finding continuous curves ("Routes") between all source-destination pairs that minimize the maximum...; Tags: Load Balancing, Helsinki University, Wireless, Network Technology, Networking; White papers 2008-02-25

QoS Routing for P2P Networking: "Peer-to-peer" concept is the core of today's Internet but it will become even greater factor in the future Internet. P2P-networks grow on their own by flooding and updating the information using peer-to-peer concept. The peers storage and computing power are used to make the routing and data-searching faster. This paper...; Tags: QoS, P2P, Helsinki University, P2P Networking, Peer To Peer (P2P), Internet; White papers 2008-01-01
Mobile IP and IPSec in Enterprise Use: A modern enterprise IT infrastructure consists of increasing number of constantly moving mobile devices. These devices often require a secure and seamless connection to the enterprise intranet resources. This connection setup and maintenance should be transparent from the user's point of view. Problems occur when the mobile device is moving...; Tags: Mobile, Helsinki University, IP, Mobile Device, Intranet, Mobile IP, IPSec, Advertising & Promotion, Marketing; White papers 2008-01-01
Using Artificial Intelligence in Intrusion Detection Systems: Artificial Intelligence could make the use of Intrusion Detection Systems a lot easier than it is today. They could learn the preferences of the security officers and show the kind of alerts first that the officer has previously been most interested. As always, the hardest thing with learning AIs, is...; Tags: Artificial Intelligence, Security Officer, Helsinki University, Intrusion Detection System, AI, Intrusion Detection, Network Security, Security, Networking; White papers 2007-11-19
Damage Control for Network Applications: For all systems, one of the most important evaluation criteria is, or should be, security. With code complexity increasing by the minute, all are forced to accept that software contains bugs, flaws, some of which can be exploited for malicious purposes. To reduce, or eliminate the threat posed by these...; Tags: Network, Helsinki University, Intrusion Detection, Security, Virtualization, Productivity, Hardware; White papers 2007-11-18
Security Patterns in Web Applications: A security pattern is a generic solution to a recurring security problem. Security patterns help developers and designers to design and implement secure systems and avoid common mistakes. This paper presents categories on security patterns in web applications and two patterns in detail. Also, this paper takes a look at...; Tags: Web Application, Helsinki University, Cloud Computing, Security; White papers 2007-10-12
Load Balancing by Distributed Optimisation in Ad Hoc Networks: This paper approaches the problem of load balancing for wireless multihop networks by distributed optimisation. As an example of a distributed optimisation algorithm for ad hoc networks, an approximation algorithm is used for minimising the maximum network congestion and implements it as a modification of the DSR routing protocol. The...; Tags: Algorithm, Advertisement, Network, Load Balancing, Helsinki University, Engineering, Networking; White papers 2007-07-10
Vocabulary Decomposition for Estonian Open Vocabulary Speech Recognition: Speech recognition in many morphologically rich languages suffers from a very high Out-Of-Vocabulary OOV ratio. Earlier work has shown that vocabulary decomposition methods can practically solve this problem for a subset of these languages. This paper compares various vocabulary decomposition approaches to open vocabulary speech recognition, using Estonian speech recognition...; Tags: Helsinki University, Speech Recognition, Emerging Technologies; White papers 2007-05-14
Optimizing Firewall Performance: Firewalls are one key factor in network performance. If they can't process their rules fast enough then the whole network slows down. Firewalls are also required part in every network so special attention must paid to their packet matching algorithms which are studied in this paper along with other rule...; Tags: Algorithm, Network, Helsinki University, Firewalls, Engineering, Network Security, Networking; White papers 2007-04-17
Semantic Service Oriented Architecture to Promote Integration of Heterogeneous B2B Services: Modeling of business services with semantic languages offer flexible integration which is more adaptive to changes in business requirements. In this paper, the authors show how business messages can be semantically represented and how semantics can be used to facilitate a conversation between heterogeneous services with data and process mediation...; Tags: Helsinki University, SOA, B2B, Integration, Service-Oriented Architecture (SOA), Middleware, Web Services, Enterprise Software, Software; White papers 2007-01-09
Wireless LAN Technology: Current State and Future Trends: In this paper, a comprehensive overview of the current state and future trends of Wireless Local Area Network WLAN has been presented. This paper studies and compares two most competing commercially potential WLAN technologies, namely IEEE 802.11 and ETSI HiperLAN. This study also addresses the challenges of their coexistance and...; Tags: Helsinki University, WLAN, LANs, Wireless LANs, Wi-Fi, Wireless, Network Technology, Networking; White papers 2007-01-01
Vulnerabilities of Intrusion Detection Systems in Mobile Ad-Hoc Networks - The Routing Problem: Intrusion detection systems is one of the most active fields of research in Mobile Ad-hoc Network's MANET field. This systems are usually focused on detecting problems with the routing systems to prevent DoS and Man-in-the-middle and, despite of the amount of papers written which try to solve, many of them...; Tags: Mobile, Network, Vulnerability, Helsinki University, Intrusion Detection System, Intrusion Detection, Network Security, Advertising & Promotion, Security, Networking, Marketing; White papers 2006-11-21
Jamming Resistant Architecture for WiMAX Mesh Network: The paper presents a jamming resistant architecture for military applications of WiMAX (802.16) mesh network. The main idea is to use multiple Base Stations BS, access points to the fixed core network. This will facilitate network survivability both in case of BS destruction and in case of jamming. When the...; Tags: Network, Helsinki University, Architecture, Base Stations Architecture, Mesh Networking, WiMAX, Networking, Wireless; White papers 2006-06-14
Competency Management and Rewarding: In rewarding one current area of interest is skill-based pay or competency-based pay. Many of these pay systems focus on competency development of individual employees. In the domain of competency management exist many variations depending on the theoretical background and on organization's strategy. How can rewarding be planned to support...; Tags: Helsinki University, Competency Management, Strategy, Management; White papers 2006-02-27
Competitive Potential of WiMAX in the Broadband Access Market: A Techno-Economic Analysis: WiMAX radio networks have been proposed as an alternative technology to provide services for the fixed broadband access market, currently dominated by DSL and cable modem systems. In this paper, the economic feasibility of WiMAX network deployments is analyzed with a quantitative techno-economic model. The model is used to assess...; Tags: Microsoft Access, Broadband, Helsinki University, WiMAX, Wi-Fi, Cable, Wireless, Broadband Internet, Telecommunications, Personal Technology; White papers 2005-05-05
An Interpolation-Based Frequency-Synchronization Scheme for OFDM Systems: The mismatch of the oscillators in the transmitter and receiver, or Doppler shift, introduces an offset in the expected carrier frequency. In orthogonal frequency-division multiplexing OFDM systems, this frequency offset causes large errors in the signal values and therefore it is important to minimize this offset. This paper proposes an...; Tags: Helsinki University, Offset, OFDM, Wireless; White papers 2005-04-28