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Helsinki University of Technology
(115 results)-
Whitepapers
Architectures for J2EE Application Clustering in BEA and IBM Application Servers
June 14, 2007, 12:00am PDT
Java 2 Platform Enterprise Edition (J2EE) was created as a standard with the purpose to develop applications for the enterprise. The enterprises require multi tier applications that access...
Provided by Helsinki University of Technology
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White Papers
Wireless LAN Technology: Current State and Future Trends
January 1, 2007, 12:00am PST
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...
Provided by Helsinki University of Technology
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White Papers
Filtering SPAM in P2PSIP Communities With Web of Trust
April 17, 2009, 12:00am PDT
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,...
Provided by Helsinki University of Technology
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White Papers
Cloud Computing: Utility Computing Over the Internet
April 27, 2009, 12:00am PDT
Cloud computing has become a hot topic in the IT industry, as it allows people to buy computing resources in the same way as utility services like water and power. Cloud computing services are...
Provided by Helsinki University of Technology
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White Papers
Cloud Computing With the Azure Platform
April 27, 2009, 12:00am PDT
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...
Provided by Helsinki University of Technology
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White Papers
Orthogonal Frequency Division Multiplexing (OFDM)
May 22, 2001, 12:00am PDT
OFDM is a promising candidate for achieving high data rate transmission in mobile environment. The application of OFDM to high data rate mobile communication system is being investigated by many...
Provided by Helsinki University of Technology
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White Papers
Environmental Independence: BSD Kernel TCP/IP in Userspace
February 4, 2009, 12:00am PST
Code is code. In the entire application stack only a very small fraction of code is special in the sense that it requires the hardware to run in privileged mode. In theory all the rest can run in...
Provided by Helsinki University of Technology
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White Papers
From Quality of Service to Quality of Experience
November 5, 2009, 12:00am PST
This paper gives detail of the Dagstuhl Seminar 09192 on "From Quality of Service to Quality of Experience " held in Schloss Dagstuhl, Leibniz Center for Informatics from May 05 to May 08, 2009....
Provided by Helsinki University of Technology
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White Papers
Design and Operation of Energy-Efficient Data Centers
April 10, 2009, 12:00am PDT
Data centers are facilities containing many server computers. Their financial and social importance is greater than ever due to growing amount of data and hosted applications used by millions of...
Provided by Helsinki University of Technology
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White Papers
Requirements On Unique Identifiers For Managing Product Lifecycle Information - Comparison Of Alternative Approaches
November 25, 2009, 12:00am PST
Managing product information for product items during their whole lifetime is challenging, especially during their usage and end-of-life phases. The main difficulty is to maintain a communication...
Provided by Helsinki University of Technology
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White Papers
Evaluation And Organization Of Futures Research Methodology
April 14, 2009, 12:00am PDT
This paper focuses on how to create value and meaning for users of the Millennium Project's "Futures Research Methodology - Version 3.0" report. The concept of a boundary object is used to provide...
Provided by Helsinki University of Technology
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White Papers
Mobile IP as an Enabling Technology for VoIP in Metropolitan Wireless Mesh Networks
February 8, 2008, 12:00am PST
Metropolitan wireless mesh networks are being deployed to provide broadband connectivity to city-wide hotspots. However, its commercial feasibility and business model have not yet proven...
Provided by Helsinki University of Technology
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White Papers
A Comparison of Mobile Payment Procedures in Finnish and Chinese Markets
June 17, 2009, 12:00am PDT
Researchers are particularly interested in factors that affect the adoption, innovations and diffusion of mobile payment, which is a typical and wide application of ICTS (Information Communication...
Provided by Helsinki University of Technology
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White Papers
Mobile Payment as Key Factor for Mobile Commerce Success
April 17, 2008, 12:00am PDT
Mobile commerce was expected to flourish with the advent of 3G technologies. Nevertheless, this business has been growing very slowly and up to now has not reached a real success. This paper shows...
Provided by Helsinki University of Technology
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White Papers
Usability Testing for Secure Device Pairing in Home Networks
July 21, 2007, 12:00am PDT
Setting up a secure communication channel between wireless devices is a crucial part of secure communications. Usually, it is done by non-expert user's with-out knowledge or interest in security...
Provided by Helsinki University of Technology
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White Papers
MMS (Multimedia Messaging Service) Enabled Web Map Dispatching Solution for Location Enhanced Fieldwork Management
January 1, 2010, 12:00am PST
Field workers, such as service men, perform every day many different tasks at different locations. Work-orders can be in well-known locations, e.g. weekly checks. But most service companies get...
Provided by Helsinki University of Technology
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White Papers
The Evolution of Wireless Home Networking
May 30, 2007, 12:00am PDT
The home networking market is growing rapidly and wireless technologies play an important role in the most home networks. This paper identifies and describes the main areas of networking. Using a...
Provided by Helsinki University of Technology
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White Papers
XML-Based E-Business Frameworks and Supply Chain Integration
October 17, 2007, 12:00am PDT
Although information and communication technologies have opened up new possibilities of doing business, supply chain integration, especially exchange of business documents in business processes,...
Provided by Helsinki University of Technology
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White Papers
Business Models And Evolving Economic Paradigms: A Systems Science Approach
July 18, 2008, 12:00am PDT
In developed economies, however, the service sector now dominates the manufacturing sector, just as manufacturing prevailed over the agricultural sector after the industrial revolution....
Provided by Helsinki University of Technology
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White Papers
Grid Computing Aptitude of Well-Known Charity or Other Non-Profit Organizations
January 1, 2011, 12:00am PST
Grid computing is a form of distributed computing where a centralized client computer distributes computations among a large number of server computers. There exists several grid computing...
Provided by Helsinki University of Technology
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White Papers
Flexible Single Sign-On for SIP: Bridging the Identity Chasm
March 24, 2008, 12:00am PDT
Identity federation is a key requirement for today's distributed services. This technology allows managed sharing of users' identity Information between Identity Providers (IDP), and subsequently,...
Provided by Helsinki University of Technology
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White Papers
Secure Computing: SELinux
October 12, 2007, 12:00am PDT
Using mandatory access control greatly increases the security of an operating system. SELinux, which is an implementation of Linux Security Modules (LSM), implements several measures to prevent...
Provided by Helsinki University of Technology
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White Papers
A Survey on Virtual Machine Security
December 19, 2007, 12:00am PST
Virtualization plays a major role in helping the organizations to reduce the operational cost, and still ensuring improved efficiency, better utilization and flexibility of existing hardware....
Provided by Helsinki University of Technology
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White Papers
Why and How to Block Skype
March 5, 2007, 12:00am PST
Skype has become a very popular Voice-over-Internet Protocol (VoIP) service that was designed with many smart characteristics. Nevertheless, it also has some security vulnerabilities that can be...
Provided by Helsinki University of Technology
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White Papers
Topical Evolution Paths of Mobile Multimedia Services
September 19, 2007, 12:00am PDT
The objective of this paper is to study the current state of the Finnish mobile market. This has been done with a mobile operator centric view. Based on a literature study and continuous...
Provided by Helsinki University of Technology
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White Papers
Identity Federation and Identity Providers
April 29, 2008, 12:00am PDT
Identity management is one of the fastest growing areas in the security market. Currently organizations have several identity and access right repositories - often one for each IT...
Provided by Helsinki University of Technology
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White Papers
Mashup Security
April 11, 2008, 12:00am PDT
This paper considers the issue of mashup security. The most important technologies used in creating mashups, like Ajax, and the basic functionality behind the mashups are introduced shortly. After...
Provided by Helsinki University of Technology
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White Papers
Honeypotting With Solaris
October 12, 2007, 12:00am PDT
Attack is the best defence, it is said. This paper is about honeypots, which are good counter-measure to detect intrusions and abnormal activity in the Internet of these days. Since security in...
Provided by Helsinki University of Technology
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White Papers
Tag, You're It - NFC in a Home Environment
March 5, 2007, 12:00am PST
This paper envisions the application of Near Field Communication (NFC) in a home environment. Several NFC solutions are currently available in the logistics industry relying on Radio Frequency...
Provided by Helsinki University of Technology
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White Papers
Security Concerns in Worm Containment Using Vigilante
October 12, 2007, 12:00am PDT
With the Internet taking increasingly integral role in the everyday lives, the researchers are struggling to leverage all more sophisticated technologies for fighting malicious software. A...
Provided by Helsinki University of Technology
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White Papers
Implementing an SPKI Certificate Repository Within the DNS
January 1, 2011, 12:00am PST
Authorization certificates can be used to grant access rights from the owner of a resource to other entities and then to further share these rights with others using delegation. However, when...
Provided by Helsinki University of Technology
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White Papers
Posture of an End Point
October 12, 2007, 12:00am PDT
The security of the network and its resources is one of the primary concerns for organizations these days. With the world getting increasingly mobile and a growing threat from malicious codes like...
Provided by Helsinki University of Technology
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White Papers
User-Centered Design of Secure Software
January 1, 2011, 12:00am PST
With the advance of electronic commerce and other networked services there is a growing need for easy to use secure software. The problem with the security features and applications in much of...
Provided by Helsinki University of Technology
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White Papers
Ad Hoc Conferencing in the IMS
October 12, 2007, 12:00am PDT
This study focuses on ad hoc conferencing in the IMS, and particularly on the security issues. As in the Internet, conference servers, which in IMS are the AS/MRFC, make it easy to set up and...
Provided by Helsinki University of Technology
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White Papers
Security of Data Warehousing Server
October 12, 2007, 12:00am PDT
The aim is to study the data warehouse specific security needs which means focusing on the long life cycle of the data and the data security and privacy issues. This requirement needs to be...
Provided by Helsinki University of Technology
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White Papers
Host Naming and URL Conventions
October 12, 2007, 12:00am PDT
The most basic thing that needs to be considered by every organization before rolling out new servers or developing new web-based applications which would be accessed by customers and clients via...
Provided by Helsinki University of Technology
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White Papers
UPnP Networking: Architecture and Security Issues
October 12, 2007, 12:00am PDT
Universal Plug and Play (UPnP) sets a distributed computing framework which takes leverage from existing web technologies and network protocols for connecting different computing resources and...
Provided by Helsinki University of Technology
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White Papers
Security Threats of Mobile Service User
October 12, 2007, 12:00am PDT
The paper studies the security threats involved in using modern mobile phone for accessing Internet services. The capabilities of such a phone are explained. Examples of different types of...
Provided by Helsinki University of Technology
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White Papers
Methods for Identifying Unwanted Network Traffic
October 12, 2007, 12:00am PDT
The amount of unwanted network traffic on the Internet is constantly increasing and it seems that currently there are no methods to identify and filter out such traffic. Before a solution can be...
Provided by Helsinki University of Technology
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White Papers
Digital Signature in Insecure Environments
October 12, 2007, 12:00am PDT
Due to current legislation the digital signatures can be as valid as the hand written signatures. If the signing environment is compromised there is no way for the signatory to know what he/she is...
Provided by Helsinki University of Technology
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Whitepapers
EGPRS2 Uplink Performance for GERAN Evolution
April 15, 2008, 12:00am PDT
In this paper, the authors present a higher performance uplink concept for the evolution of GSM/EDGE Radio Access Network (GERAN). The EGPRS2 UL concept can operate at 1.2 times the current GERAN...
Provided by Helsinki University of Technology
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Whitepapers
Query Significance in Databases Via Randomizations
June 30, 2009, 12:00am PDT
Many sorts of structured data are commonly stored in a multi-relational format of interrelated tables. Under this relational model, exploratory data analysis can be done by using relational...
Provided by Helsinki University of Technology
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Whitepapers
Spectrum Sensing in Cognitive Radios Based on Multiple Cyclic Frequencies
July 6, 2007, 12:00am PDT
Cognitive radios sense the radio spectrum in order to find unused frequency bands and use them in an agile manner. Transmission by the primary user must be detected reliably even in the low...
Provided by Helsinki University of Technology
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Whitepapers
Energy-Adaptive Scheduling and Queue Management in Wireless LAN Mesh Networks
April 19, 2010, 12:00am PDT
Energy efficiency is of critical importance in future wireless communication systems where networked low-power devices relying on batteries should be able to communicate transparently. The authors...
Provided by Helsinki University of Technology
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Whitepapers
A Survey of Software as a Service Delivery Paradigm
April 20, 2009, 12:00am PDT
Software as a Service (SaaS) is a novel model of software delivery. It has been gaining momentum in recent years. More and more SaaS adoption succeeds. This paper presents an overview of this...
Provided by Helsinki University of Technology
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Whitepapers
Scenario Analysis on Future Internet
May 22, 2009, 12:00am PDT
The Internet has grown out of its original scope and scale while its importance for the society has increased. This has raised considerable uncertainties and concerns about the future evolution....
Provided by Helsinki University of Technology
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Whitepapers
Host Identity Protocol (HIP): Connectivity, Mobility, Multi-Homing, Security, and Privacy Over IPv4 and IPv6 Networks
September 28, 2009, 12:00am PDT
The Host Identity Protocol (HIP) is an internetworking architecture and an associated set of protocols, developed at the IETF since 1999 and reaching their first stable version in 2007. HIP...
Provided by Helsinki University of Technology
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White Papers
Forwarding Anomalies in Bloom Filter Based Multicast
July 31, 2010, 12:00am PDT
Several recently proposed multicast protocols use in-packet Bloom filters to encode multicast trees. These mechanisms are in principle highly scalable because no per-flow state is required in the...
Provided by Helsinki University of Technology
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White Papers
The ONE Simulator for DTN Protocol Evaluation
January 22, 2009, 12:00am PST
Delay-Tolerant Networking (DTN) enables communication in sparse mobile ad-hoc networks and other challenged environments where traditional networking fails and new routing and application...
Provided by Helsinki University of Technology
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White Papers
Searching for Content in Mobile DTNs
January 28, 2009, 12:00am PST
Delay-Tolerant Networking (DTN) provides a platform for applications in environments where end-to-end paths may be highly unreliable or do not exist at all. In many applications such as...
Provided by Helsinki University of Technology
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White Papers
Evaluation of Error Resilience Mechanisms for 3G Conversational Video
October 8, 2008, 12:00am PDT
Communication in 3G networks may experience packet losses due to transmission errors on the wireless link(s) which may severely impact the quality of conversational and streaming video services,...
Provided by Helsinki University of Technology
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White Papers
Delay Tolerance and the Future Internet
June 17, 2008, 12:00am PDT
The Internet protocols were designed to provide end-to-end connectivity across heterogeneous networks, yet primarily assuming a "Fixed" and rather static network environment. Mobile and wireless...
Provided by Helsinki University of Technology
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White Papers
Increasing Reality for DTN Protocol Simulations
July 3, 2007, 12:00am PDT
Powerful personal devices provide the basis for ad-hoc networking among mobile users. Delay-Tolerant Networking (DTN) enables such communication in spite of low node density - to reach an...
Provided by Helsinki University of Technology
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White Papers
Practical Voice Communications in Challenged Networks
April 30, 2009, 12:00am PDT
Today's Push-To-Talk (PTT) services are infrastructure based and require stable end-to-end paths for successful communication. However, users with PTT enabled mobile devices may roam in challenged...
Provided by Helsinki University of Technology
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White Papers
Text and Language Independent Speaker Identification by Using Short-Time Low Quality Signals
March 17, 2008, 12:00am PDT
Several speaker identification applications that exploit voice signals recorded by using wireless networks of small, low-power acoustic sensors are becoming feasible. However, the acoustic signals...
Provided by Helsinki University of Technology
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White Papers
Privacy Challenges of Open APIs: Case LBS
December 2, 2010, 12:00am PST
Many of the most popular Location-Based Services (LBSs) have recently released open APIs for developers in order to extend their services to third party applications. With this strategy, LBSs try...
Provided by Helsinki University of Technology
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White Papers
Peer-to-Peer Communication
January 1, 2012, 12:00am PST
Internet has changed a lot since its early days. At the beginning, goal of the Internet was to share computing resources between universities and scientists. In those days communication happened...
Provided by Helsinki University of Technology
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White Papers
Practical Approaches to Adaptive Resource Allocation in OFDM Systems
September 28, 2007, 12:00am PDT
Whenever a communication system operates in a time-frequency dispersive radio channel, the link adaptation provides a benefit in terms of any system performance metric by employing time,...
Provided by Helsinki University of Technology
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White Papers
On Throughput-Fairness Tradeoff in Virtual MIMO Systems with Limited Feedback
January 24, 2009, 12:00am PST
The authors investigate the performance of channel-aware scheduling algorithms designed for the downlink of a wireless communication system. Their study focuses on a two-transmit antenna cellular...
Provided by Helsinki University of Technology
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White Papers
Time Synchronization of Cognitive Radio Networks
March 26, 2009, 12:00am PDT
In this paper, a novel synchronization protocol is proposed especially for Cognitive Radio (CR) networks called CR-Sync. In a CR network, time synchronization is indispensable because of the...
Provided by Helsinki University of Technology
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White Papers
Mechanisms of Reducing Reauthetication Delay on IEEE 802.11 WLANs
June 22, 2009, 12:00am PDT
In this paper, the authors present of mechanisms for reducing re-authentication delay in Institute of Electrical and Electronics Engineers (IEEE) 802.11 Wireless Local Area Networks (WLAN). They...
Provided by Helsinki University of Technology
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White Papers
Location Integrity in Mobile Ad-Hoc and Peer-to-Peer Networks
April 27, 2009, 12:00am PDT
Existing mobile peer-to-peer solutions focus on improving the operation of peer-to-peer networks by inventing better routing algorithms or new ways of discovering or transferring data in order to...
Provided by Helsinki University of Technology
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White Papers
Mobile Agent Based Architecture for Wireless Sensor Networks
April 27, 2009, 12:00am PDT
Wireless Sensor Networks (WSN) has emerged as one of the key growth areas for wireless networking and computing technologies. Usually in sensor networking, traditional client-server computing...
Provided by Helsinki University of Technology
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White Papers
Middleware for Wireless Sensor Networks :Challenges and Approaches
April 27, 2009, 12:00am PDT
Nowadays, WSNs are becoming increasingly attractive to researchers and industries due to wide range of applications. A WSN is consists of large numbers of small scale sensing nodes capable of...
Provided by Helsinki University of Technology
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White Papers
An Evaluation Framework for Middleware Approaches on Wireless Sensor Networks
April 27, 2009, 12:00am PDT
This paper presents an evaluation framework for middleware designs on Wireless Sensor Networks (WSNs). There is lots of existing middleware solutions for WSNs; the authors introduced middleware...
Provided by Helsinki University of Technology
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White Papers
On Maximizing Throughput Under Optimum Energy With Inter-Session Network Coding in Wireless Networks
April 27, 2009, 12:00am PDT
Network Coding (NC) has emerged in the last couple of years as a significant mechanism to improve network throughput as well as to efficiently utilize the bandwidth in communication networks....
Provided by Helsinki University of Technology
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White Papers
Adopting Internet Protocols to Sensor Internetworking
April 27, 2009, 12:00am PDT
Recent research in the area of the Wireless Sensor Networks (WSN) has shown that protocols most commonly used today in the Internet can be implemented within energy and memory constraints of the...
Provided by Helsinki University of Technology
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White Papers
Energy-Efficient Parallel Software for Mobile Hand-Held Devices
April 11, 2011, 12:00am PDT
Energy efficiency is an essential design criterion for mobile hand-held devices. The authors underline the issue that parallel programs for mobile devices must be efficiently executable on the...
Provided by Helsinki University of Technology
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White Papers
Network Coding in Wireless Environment
April 20, 2008, 12:00am PDT
An approach called network coding is a new research area that could dramatically enhance the reliability and efficiency of practical networking systems. Network coding can enable intermediate...
Provided by Helsinki University of Technology
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White Papers
Empirical Modelling of the Mobile VoIP Demand
March 21, 2008, 12:00am PDT
This paper first discusses the future of mobile Internet voice and possible technical service evolution paths. Three main fundamental drivers of mobile VoIP (Voice over IP) diffusion are...
Provided by Helsinki University of Technology
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White Papers
Running an i3 Overlay Network on Top of AODV
January 1, 2011, 12:00am PST
Mobile Ad hoc NETworks (MANETs) and Peer-To-Peer (P2P) overlay networks share many key features. Both can be viewed as decentralized self-organizing networks. Both usually have flat address spaces...
Provided by Helsinki University of Technology
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White Papers
Influence of Antenna Radiation Pattern on Accuracy of ToA Estimation
September 30, 2009, 12:00am PDT
Ultra-WideBand (UWB) signals have very large bandwidth which allow accurate ranging using time domain techniques. Precise UWB ranging requires accurate estimation of Time of Arrival (ToA). Several...
Provided by Helsinki University of Technology
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White Papers
An Evaluation of Security Protocols on Wireless Sensor Network
April 16, 2009, 12:00am PDT
In recent years, Wireless Sensor Network (WSN) is employed in many application areas such as environmental monitoring, and battle field strategy planning. For many applications of WSN, security is...
Provided by Helsinki University of Technology
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White Papers
Impact of Size-Based Scheduling on Flow Level Performance in Wireless Downlink Data Channels
January 1, 2011, 12:00am PST
The authors analyze the impact of size-based scheduling on the flow level performance of elastic traffic in wireless downlink data channels. The impact is assessed by comparing the flow level...
Provided by Helsinki University of Technology
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White Papers
Approximating Maximum Directed Flow in a Large Wireless Network
February 28, 2009, 12:00am PST
The authors study the maximum forwarding capacity for the relay traffic that can be transmitted through a wireless multi-hop network in a single direction. The problem appears as the microscopic...
Provided by Helsinki University of Technology
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White Papers
On the Optimality of Field-Line Routing in Massively Dense Wireless Multi-Hop Networks
March 5, 2009, 12:00am PST
The authors consider the load balancing problem in large wireless multi-hop networks by applying the continuum approximation. The task is to find routes, geometric curves, such that the maximal...
Provided by Helsinki University of Technology
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White Papers
A Translation-Based Approach to the Verification of Modular Equivalence
August 10, 2007, 12:00am PDT
In this paper, a method for verifying the equivalence of logic program modules under a Gaifman-Shapiro-style module architecture is proposed. The idea is to adapt a translation-based verification...
Provided by Helsinki University of Technology
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White Papers
Implementing Prioritized Circumscription by Computing Disjunctive Stable Models
June 18, 2008, 12:00am PDT
The stable model semantics of disjunctive logic programs is based on minimal models which assign atoms false by default. While this feature is highly useful and leads to concise problem encodings,...
Provided by Helsinki University of Technology
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White Papers
Security of Wireless Sensor Network
April 19, 2009, 12:00am PDT
Wireless Sensor Networks (WSN) is an emerging technology and day by day it is attracting the attention of researchers with its challenging characteristics and diversified application domain. The...
Provided by Helsinki University of Technology
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White Papers
Comparing Various Realizations of the Cloud Computing Paradigm
December 2, 2010, 12:00am PST
Cloud Computing is becoming attractive these days. Many big companies, such as Google, Amazon and IBM, have promoted their own cloud computing platforms for customers to deploy their web...
Provided by Helsinki University of Technology
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