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  • NAT Traversal in Peer-to-Peer Architecture

    Resource Type:
    Report
    Creator:
    Daigle, Alexandre, Poulin, Marc-André, Maldague, Lucas Rioux, and Gagnon, François
    Abstract:
    Peer-to-peer networks are well known for file sharing between multiple computers. They establish virtual tunnels between computers to transfer data, but NATs makes it harder. A NAT, Network Address Translation, is a process which transforms private IP addresses, such as 192.168.2.1, into public addresses, such as 203.0.113.40. The idea is that multiple private addresses can hide behind a single public address and thus virtually enlarge the number of allocable public IP addresses. When an application in the local network establishes a connection to Internet, the packet passes through the NAT which adjusts the IP header and maps an external port to the computer which sent the request. When packets are received from the Internet by the NAT, they are forwarded to the internal host which is mapped to the port on which the packet was received, or dropped if no mapping exists. In this paper, we will introduce you to NAT and P2P, we will discuss the numerous ways NATs use to translate private IP addresses into public ones, we will discuss known techniques used to fix the problem and we will also present how popular peer-to-peer programs bypass NATs. This paper is written so anybody with a reasonable knowledge of networking would grasp the essentials. It is important to keep in mind that the traversal methods presented in this document work for UDP and TCP and require no manual configuration of the Network Address Translator itself.
    Date Created:
    2012-10-30

  • Small Charities: An Analysis of Change in Fundraising Activities

    Resource Type:
    Report
    Creator:
    Brouard, Francois, Armenakyan, Anahit, and Neilson, Leighann
    Abstract:
    This research project is an examination of change in the fundraising activities employed by small Canadian registered charities (defined as registered charities with total annual revenues under $100,000) over the ten year period from 2000 to 2009. Utilizing data from the Registered Charity Information Returns (T3010) filed by charities with the Canada Revenue Agency (CRA), the study provides a profile of fundraising methods used, examining trends in types and number of fundraising methods utilized over the ten year period. We analyze variation in terms of size, designation type (charitable organization/public foundation /private foundation), location (rural/urban), charitable activity (welfare, religion, education, health, benefit to the community, other), orientation (religious/secular), and geographic region (each province and territory, western Canada/central Canada/Maritimes/territories).
    Date Created:
    2012-10-31

  • Fundraising Methods: Past, Present, Future

    Resource Type:
    Report
    Creator:
    Armenakyan, Anahit, Brouard, Francois, and Neilson, Leighann
    Abstract:
    The term ‘fundraising methods’ refers to the tactics used by charities to generate current or future monies and gifts in kind to provide services to clients, fund research, and cover administrative costs. Under conditions of reduced financial support from government, fundraising is an important, even critical, source of revenue for charities. Equally important is access to accurate information on fundraising methods used by charities in Canada. This paper traces the evolution of fundraising data collected by Canada Revenue Agency (CRA) over the last ten years, compares definitions employed by CRA with examples drawn from the academic and practitioner literatures, and highlights methods not currently being tracked by the T3010 Registered Charity Information Return.
    Date Created:
    2012-10-31

  • 2012 National Study of Work-Life Issues in Canadian Police Departments

    Resource Type:
    Report
    Creator:
    Higgins, Christopher and Duxbury, Linda E.
    Abstract:
    This report provides key findings and recommendations from a study of work-life conflict and employee well-being that involved 4500 police officers working for 25 police forces across Canada. Findings from this study should help police forces across Canada implement policies and practices that will help them thrive in a "sellers market for labour."
    Date Created:
    2012-03-01

  • 2012 National Study on Balancing Work and Caregiving in Canada

    Resource Type:
    Report
    Creator:
    Duxbury, Linda E. and Higgins, Christopher
    Abstract:
    The study examined work-life experiences of 25,000 Canadians who were employed full time in 71 public, private and not-for-profit organizations across all provinces and territories between June 2011 and June 2012. Two-thirds of survey respondents had incomes of $60,000 or more a year and two-thirds were parents. Previous studies were conducted in 1991 and 2001. “It is fascinating to see what has changed over time and what hasn’t,’’ said Duxbury. Among the findings: Most Canadian employees still work a fixed nine-to-five schedule – about two-thirds. Overall, the typical employee spends 50.2 hours in work-related activities a week. Just over half of employees take work home to complete outside regular hours. The use of flexible work arrangements such as a compressed work week (15 per cent) and flexible schedules (14 per cent) is much less common. Fifty-seven per cent of those surveyed reported high levels of stress. One-third of working hours are spent using email. Employees in the survey were twice as likely to let work interfere with family as the reverse. Work-life conflict was associated with higher absenteeism and lower productivity. Succession planning, knowledge transfer and change management are likely to be a problem for many Canadian organizations. There has been little career mobility within Canadian firms over the past several years.
    Date Created:
    2012-10-25