28 research outputs found
MEASUREMENT OF YARN VELOCITY IN TEXTILE MACHINES USING A NON-CONTACT TRACER METHOD
The presented measurement method uses a tracer for measuring the transit time between
two fixed points of known distance. For the marking static electric charge is used, which can be
impressed by a corona discharge and detected with a capacitive detector. Since the yarn is an
insulator, the charge does not move on its surface; therefore the tracer signal is not changed
during the transit time. This means that the system is a pure dead-time system, and the transit
time can be calculated by measuring the phase-shift between the two detectors. This phase shift is
determined by a simplified Fourier-transform done by a microcomputer. This microcomputer is
also used for generating all needed signals, input-output and averaging
Climate Fluctuation and Agricultural Change in Southern and Central New England, 1765-1880
This article discusses the theory that previous discussions of the decline of Maine population in the period 1765-1880 failed the address the impact of weather fluctuations on the society of Maine
Alfons Fransen, Dijk onder spanning. De ecologische, politieke en financiële geschiedenis van de Diemerdijk bij Amsterdam, 1591-1864
Managing Water in an Urban Land. A New History of Rijnland
Managing Water in an Urban Land. A New History of RijnlandWaterstad in stedenland, a history of the Hoogheemraadschap Rijnland before 1857, is a fine example of the ‘new hydraulic history.’ By drawing information from a broad range of sources, employing an explicitly ecological approach, and imbedding their work in the social, economic, and political history of the period they cover, Milja van Tielhof and Petra J. E. M. van Dam have produced a well-researched, clearly-written, and attractive volume that is a worthy successor to Fockema Andreae’s classic study of nearly 75 years ago
Campaigning online : the internet, elections and democracy in Canada
As political engagement declines in Western democracies, the Internet has been held up
as a promising site for citizen participation and engagement. This optimism has been fuelled by
recent political events that seem to confirm the Internet's democratic potential. Barack Obama
channelled the Internet's power for fundraising and voter mobilization in the 2009 U.S. election.
Likewise, Iranian voters successfully used social media such as Twitter to organize protests of
the country's 2009 presidential election. This paper presents a first look at how Canadian
political parties are using and responding to online communication tools during elections
campaigns. Specifically it examines the role of online communications tools in building and
developing a campaign platform. Moreover, it discusses whether these activities represent a
shift towards a strengthened democracy or are simply reflective of current political culture. The
findings are based on data gathered through semi-structured interviews with political strategists involved in the 2008-09 federal, British Columbia provincial and Vancouver municipal elections. This study found that online communication during election campaigns has little influence on the shape of the policy platform. However, political parties have been quick to adopt new online communications platforms allowing them to market their candidates and policies. Moreover, the Internet has shaped traditional campaign functions allowing parties to recruit funds, voter information and volunteers online. Rather than fundamentally shifting the character of
democracy in Canada, the current use of online communication tools seems to be defined by
the existing political culture.Arts, Faculty ofJournalism, School ofGraduat
Siger Zeischka, Minerva in de polder. Waterstaat en techniek in het hoogheemraadschap van Rijnland (1500-1865)
Straws in the Wind: Medieval Urban Environmental Law—The Case of Northern Italy. By Ronald E. Zupko and Robert A. Laures. Boulder, CO: Westview, 1996. Pp. viii, 152. $21.00.
Temperature as a parameter in HPLC optimisation
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