The Hackathon Phenomenon

date-added: 2015-03-24 04:16:59 +0000 date-modified: 2015-03-24 04:16:59 +0000date-added: 2015-03-24 04:16:59 +0000 date-modified: 2015-03-24 04:16:59 +000

Analysis of Algorithms for Velocity Estimation from Discrete Position Versus Time Data

Algorithms for constructing velocity approximations from discrete position versus time data are investigated. The study is limited to algorithms suitable to provide velocity information in discrete-time feedback control systems such as microprocessor-based systems with a discrete position encoder. Velocity estimators based on lines per period, reciprocal-time, Taylor series expansion, backward difference expansions, and least-square curve fits are presented. Based on computer simulations, comparisons of relative accuracies of the different algorithms are made. The least-squares velocity estimators filtered the effect of imperfect measurements best, whereas the Taylor series expansions and backward difference equation estimators respond better to velocity transients

Toward a Comprehensive Program for Regulating Vacant or Abandoned Dwellings in North Carolina: The General Police Power, Minimum Housing Standards, and Vacant Property Registration

Part I of this Article provides a brief introduction to North Carolina\u27s experience thus far with the foreclosure crisis and introduces the broad array of statutorily granted tools local governments might employ to deal with vacant or abandoned dwellings in varying stages of neglect. Part II discusses the general police power that serves as the first line of defense against the decline of vacant or abandoned housing, as well as how that power is limited by state statutes governing minimum housing standards. Part III then turns to those minimum housing statutes to examine their operation and limitations. Part IV analyzes the authority of local governments in North Carolina to implement a policy tool used in other states; namely, a vacant property registration program. Part V concludes by reflecting on the limitations of North Carolina\u27s complex web of code enforcement mechanisms and proposes some ways in which the North Carolina General Assembly could enhance local governments\u27 authority to regulate vacant and abandoned dwellings

Toward a Comprehensive Program for Regulating Vacant or Abandoned Dwellings in North Carolina: The General Police Power, Minimum Housing Standards, and Vacant Property Registration

Part I of this Article provides a brief introduction to North Carolina\u27s experience thus far with the foreclosure crisis and introduces the broad array of statutorily granted tools local governments might employ to deal with vacant or abandoned dwellings in varying stages of neglect. Part II discusses the general police power that serves as the first line of defense against the decline of vacant or abandoned housing, as well as how that power is limited by state statutes governing minimum housing standards. Part III then turns to those minimum housing statutes to examine their operation and limitations. Part IV analyzes the authority of local governments in North Carolina to implement a policy tool used in other states; namely, a vacant property registration program. Part V concludes by reflecting on the limitations of North Carolina\u27s complex web of code enforcement mechanisms and proposes some ways in which the North Carolina General Assembly could enhance local governments\u27 authority to regulate vacant and abandoned dwellings

Interview with Leonard Mulligan by Andrea L’Hommedieu

Biographical NoteLeonard C. Mulligan was born in North Andover, Massachusetts, in 1932. His family moved to Brunswick, Maine, in 1939, where he lived until he was graduated from Bowdoin College; he and George Mitchell were classmates (class of 1954). After graduation he entered the Army. He attended graduate school in Springfield, Massachusetts, and worked at Mass Mutual. He later returned to Maine, where he worked in Bath on housing development. SummaryInterview includes discussion of: Bowdoin in the 1950s; Bowdoin Latin professor Nate Dane; Mulligan’s memories of George Mitchell while both were Bowdoin students; Mulligan working on a housing project in Bath with George Mitchell; Gayle Cory; purchasing the Hyde School in Bath, Maine; and Mulligan’s daughter Annie’s summer internship for Mitchell

Sunjammer

No abstract available

A contemporary study on the impact of regulations on business performance

This dissertation examines Nobel Prize Laureate Hayek\u27s ominous warning that economic liberty in the U.S. is at risk, due to regulations, of becoming an unplanned administrative state. The research seeks to understand the effects of regulations on business performance and how to right-size them for a healthy business environment. These objectives are accomplished with two papers: (1) a macro cross-discipline literature review and call for research on the impact of regulations on business performance, and (2) a qualitative grounded theory study from interviews from elite business executives on their perspectives on the impact of regulations on business performance. The findings lead to principles of the impact of regulations have on business performance, theoretical implications, and practical implications towards the right-sizing of regulations. The government\u27s role as the umpire is paramount, including acting on appropriate regulations to create a healthy business environment and avoiding regulations that pick winners and losers. Regulations should be vetted against unintended consequences that may create an unhealthy business environment. Future research directions and limitations are discussed

Hitting the triple bottom line: widening the HCI approach to sustainability

Sustainable Development (SD) in its dimensions – environment, economy, and society – is a growing area of concern within the HCI community. This paper advances a systematic literature review on sustainability across the Sustainable Human-Computer Interaction (SHCI) body of work. The papers were classified according to the Triple Bottom Line (TBL) framework to understand how the pillars of SD play into the HCI discourse on sustainability. The economic angle was identified as a gap in SHCI literature. To meet the TBL of SD, however, a balance needs to be sought across all ‘lines’. In this paper, we propose that HCI can advance the discussion and the understanding of the economic concepts around sustainability through taking a sociology perspective on the economic angle of the TBL. We sustain this claim by discussing economic concepts and the role that digital can play in redefining the established foundations of our economic system