329,623 research outputs found

    Fine-grained Patterns of the Digital Divide: Differences of Broadband Access within Finland

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    Access to the Internet plays a central role in the development of an information society. However, because of the required telecommunications infrastructure is very expensive to build, and telecommunications services are also relatively expensive, there is no sufficient demand for a market-based provision of relevant telecommunication infrastructures in many areas. As a result, some citizens and organisations are left without an (up-to-date) access to the Internet. This gap between social groups with and without access to the Internet, which is also often linked with a lack of motivation to use it, is referred to as Digital Divide. Several governments have implemented programmes aimed at diminishing this Divide, by means of providing access to the Internet in regions where the market does not provide it, and by enhancing the citizens? ?information society? skills and motivation. There are a variety of technologies available for connecting to the Internet. The traditional narrowband means include modem and ISDN. For faster connections in terms of data transfer rate, various broadband technologies have been introduced. Actually, these broadband connections, which usually offer a fixed pricing scheme, are often seen as the embodiment of an information society. Lately, also mobile connections have become a feasible in creating an access to the Internet, as their speed has increased to the level of the traditional modem connection, and their data transfer prices have been reduced. The aim of this paper is to explore spatial patterns and differences in internet access in Finland. Availability of all possible technologies (traditional, broadband and mobile) are investigated in detail. The findings are compared with demographic characteristics of the relevant regions. Not surprisingly, the tentative results support the view that regions with higher population densities have a better access to the Internet. With regard to the debate on the Digital Divide, it is especially interesting to observe that variations in access to the Internet do not follow administrative borders, but are much more fine-grained. Clearly, this has implications for effective and righteous information society policies, and for an evaluation of the effectiveness of such policies. The paper in an outgrowth of the project ?Telecommunications Services and Networks and Territorial Cohesion? funded from the European Spatial Planning Observation Network (ESPON) programme (see www.espon.lu). Key words: internet access, digital divide, telecommunications infrastructure, spatial differences, ESPON

    The 2010 Personal Firewall Robustness Evaluation

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    With the advent of cheaper Internet connections, the number of Internet connections among home users is on the rise. Generally, home users have little understanding of the security concerns associated with Internet connectivity. To protect against computer attacks, generally a home user may install a personal firewall on his/her computer. To determine the effectiveness of personal firewalls, evaluation tests were performed against the ten firewall products available to users at local electronic stores and listed on popular firewall security websites. The firewalls were tested in their default and maximum security mode. The investigation was carried out by performing a port scan and vulnerability scan attacks against a computer with no firewall protection and computers running personal firewalls. The results of the investigation established that the computers running the firewalls exhibited some or all of the vulnerabilities detected on a computer with no firewall protection

    Telecommunication reforms, access regulation, and Internet adoption in Latin America

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    The authors review the stylized facts on regulatory reform in telecommunications and its effects on telecommunications development and Internet penetration in Latin America. Relying on data from the International Telecommunication Union, the Information for Development Program (InfoDev), and the World Bank for 1990-99, the authors then test econometrically the determinants of the differences in Internet penetration rates across Latin America. The results show that effective implementation of the reform agenda in telecommunications regulation could accelerate adoption of the Internet in Latin America-even though it is only part of the solution (income levels, income distribution, and access to primary infrastructure are the main determinants of growth in Internet connections and use). Regulation will work by cutting costs. Cost cutting will require that regulators in the region take a much closer look at the design of interconnection rules and at the tradeoffs that emerge from the complex issues involved. It will also require a commitment to developing analytical instruments, such as cost models, to sort out many of the problems. Appropriate cost models will generate benchmarks that are much more consistent with the local issues and with the local cost of capital than international benchmarks will ever be for countries in unstable macroeconomic situations. Cost cutting will require an equally strong commitment to imposing regulatory accounting systems that reduce the information asymmetrics that incumbents use to reduce the risks of entry. All these changes will ultimately require a stronger commitment by competition agencies, since in many countries a failure to negotiate interconnection agreements will raise competition issues just as often as it will raise regulatory questions.Rural Communications,Information Technology,Telecommunications Infrastructure,Knowledge Economy,Health Monitoring&Evaluation,Knowledge Economy,Information Technology,Health Monitoring&Evaluation,Rural Communications,Education for the Knowledge Economy

    CER/TER - the new metric for TCP connection robustness evaluation and comparison

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    This article presents new metric for TCP connection robustness evaluation and comparison. This metric is focused on TCP connection and transmission continuity rather then on maximal throughput or minimal RTT. This metric is developed especially for evaluation of narrow band networks. That is why it is very convenient to use this metric for networks such as Internet of Things networks or industrial sensor networks. Our metric is based on observing if connections or transmissions are successfully finished or not. It is possible to optimize this metric for specific situations. This metric can be used in both the real networks and in discrete simulation environments

    Experimental evaluation of select servers and firewalls under denial of service security attacks

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    Internet security requires newer prevention mechanisms to be implemented on web-servers and routers. Firewall/Intrusion Prevention mechanisms (IPS) can be deployed on host servers or routers as an added line of defense against Internet attacks. In this thesis, we evaluate performance of security mechanisms provided by these devices against Distributed Denial of Service (DDoS) attacks. The host based firewalls on Windows servers-2003 and 2008 were evaluated. In this thesis, we also evaluated Juniper Networks Netscreen-5GT firewall/IPS, and Cisco ASA-5510/IPS that are used in protecting web-servers against DDoS attacks. It was found that the host based firewalls and protection mechanisms on the windows servers were not capable of defending against the DDoS attacks. Our performance evaluation showed the computing resource of the servers to be completely exhausted under these attacks. The evaluation of firewalls and IPS under different loads of attack had varying performance in supporting the number of web connections

    UKAIRO: internet-scale bandwidth detouring

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    The performance of content distribution on the Internet is crucial for many services. While popular content can be delivered efficiently to users by caching it using content delivery networks, the distribution of less popular content is often constrained by the bandwidth of the Internet path between the content server and the client. Neither can influence the selected path and therefore clients may have to download content along a path that is congested or has limited capacity. We describe UKAIRO, a system that reduces Internet download times by using detour paths with higher TCP throughput. UKAIRO first discovers detour paths among an overlay network of potential detour hosts and then transparently diverts HTTP connections via these hosts to improve the throughput of clients downloading from content servers. Our evaluation shows that by performing infrequent bandwidth measurements between 50 randomly selected PlanetLab hosts, UKAIRO can identify and exploit potential detour paths that increase the median bandwidth to public Internet web servers by up to 80%

    How Online Learning Evaluation (Kahoot) Affecting Students’ Achievement and Motivation (Case Study on it Students)

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    It is undeniable that the development of technology in the present impacts on various aspects, especially in the field of learning technology. In learning, lecturers are required to implement innovations in the field of technology. One of the implementations of education technology is the implementation of evaluation by using Kahoot. Kahoot is a game-based learning platform. By implementing this learning evaluation, we expect students' achievement and motivation in learning to improve. The research method of this research is simple qualitative descriptive using a questionnaire that were distributed to the first semester Informatics Engineering students as the object of this research. From the questionnaire the results showed that 82.2% of students stated that Kahoot was able to increase their learning motivation. Other results is the increasing  of students’ scores in this evaluations and the obstacle found in implementing this evaluation is the umstable connections or internet networks

    Pushing BitTorrent Locality to the Limit

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    Peer-to-peer (P2P) locality has recently raised a lot of interest in the community. Indeed, whereas P2P content distribution enables financial savings for the content providers, it dramatically increases the traffic on inter-ISP links. To solve this issue, the idea to keep a fraction of the P2P traffic local to each ISP was introduced a few years ago. Since then, P2P solutions exploiting locality have been introduced. However, several fundamental issues on locality still need to be explored. In particular, how far can we push locality, and what is, at the scale of the Internet, the reduction of traffic that can be achieved with locality? In this paper, we perform extensive experiments on a controlled environment with up to 10 000 BitTorrent clients to evaluate the impact of high locality on inter-ISP links traffic and peers download completion time. We introduce two simple mechanisms that make high locality possible in challenging scenarios and we show that we save up to several orders of magnitude inter-ISP traffic compared to traditional locality without adversely impacting peers download completion time. In addition, we crawled 214 443 torrents representing 6 113 224 unique peers spread among 9 605 ASes. We show that whereas the torrents we crawled generated 11.6 petabytes of inter-ISP traffic, our locality policy implemented for all torrents would have reduced the global inter-ISP traffic by 40%

    Evaluation of curriculum online: report of the follow up survey of schools

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    This report contains the findings of the second survey of schools carried out as part of the evaluation of curriculum online. One questionnaire collected school-level information for each school and additional questionnaires collected data for selected subject areas
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