1,563 research outputs found
Plumbing, electricity, acoustics : sustainable design methods for architecture / Norbert Lechner.
No full textIncludes index.xi, 289 pages :Discover sustainable methods for designing crucial building systems for architects.
This indispensable companion to Norbert Lechner's landmark volume Heating, Cooling, Lighting: Sustainable Design Methods for Architects, Third Edition completes the author's mission to coverall topics in the field of sustainable environmental control. It provides knowledge appropriate for the level of complexity needed at the schematic design stage and presents the most up-to-date information available in a concise, logical, accessible manner and arrangement. Although sustainability deals with many issues, those concerning energy and efficiency are the most critical, making an additional goal of this book one of providing architects with the skills and knowledge needed to create buildings that use electricity and water efficiently. Guidelines and rules-of-thumb are provided to help designers make their buildings use less energy, less water, and less of everything else to achieve their primary objectives.
In addition, this book:
Addresses ways to reduce electricity usage through more efficient lighting systems and appliances and by incorporating automatic switches and control systems that turn off systems not in use.
Covers the design of well-planned effluent treatment systems that protect against potential health hazards while also becoming a valuable source of reclaimed water and fertilizer
Provides coverage of fire protection and conveyance systems, including very efficient types of elevators and escalators and designs that encourage the use of stairs or ramps.
Complete with case studies that illustrate how these systems are incorporated into large-project plans, Plumbing, Electricity, Acoustics is an indispensable resource for any architect involved in a sustainable design project
The competitiveness of entrepreneurial firms from a network perspective
No full textThis book sheds light on how the competitiveness of entrepreneurial firms can be understood from a relational perspective. The relational perspective complements internally focused approaches to explain firm competitiveness. Through the review of publications of the author, it will be shown how the relational view extends the classic notion of strategic management and how different types of networks matter in time for the competitiveness of firms but also how the spatial distribution of relationships matter for firms. The latter leads also to an investigation of the nature of clusters and how they are born and developed but most importantly how differential firm performance within clusters can be explained (allowing firms to develop a competitive advantage). If we consider that the network model is relevant for the development of entrepreneurial firms, the question arises what the limits of this model are and what the consequences are for firm development. Moreover, while research stretches the positive effects of networks, the negative effects are somehow under-researched. Research is presented that sheds some light on network liabilities. Understanding networks as an organizational configuration, the perspective is extended to other organizational configurations that drive firm competitiveness: they include research on teams as sub-units and small business groups. Concluding remarks will finally link the idea of competitive advantage to entrepreneurship
"In Search Of �" Exhibition Brochure
No full textThis brochure was scanned in the VRC during summer 2014. The original may be viewed in the College Archives.This is a digital copy of the exhibition brochure for a group show titled In Search Of ... It was featured in Clough-Hanson Gallery September 7 - October 12, 2012. The exhibition was curated by Dustin Dennis, Christopher Ulivo, and Amanda Lechner. The curators wrote a short essay that appears in the brochure. The exhibition included artwork by Mark Shetabi, Betsy Odom, Ryan Mrozowski, Ross Sawyers, Leah Beeferman, Sean McCarthy, David Humphrey, Amanda Lechner, Mike Peter Smith, Frank Heath, Brian Zegeer, Rachel Frank, Phil Whitman, Matt Bollinger, Christopher Ulivo, Jackie Hoving, Carl Baratta, Erin Harmon, Dustin Dennis, Nathaniel Stern and Scott Kildall / Tweets in Space
A new transition between discrete and continuous self-similarity in critical gravitational collapse
No full textWe analyze a bifurcation phenomenon associated with critical gravitational
collapse in a family of self-gravitating SU(2) ? models. As the
dimensionless coupling constant decreases, the critical solution changes
from discretely self-similar (DSS) to continuously self-similar (CSS).
Numerical results provide evidence for a bifurcation which is analogous
to a heteroclinic loop bifurcation in dynamical systems, where two fixed
points (CSS) collide with a limit cycle (DSS) in phase space as the
coupling constant tends to a critical value
Wolfgang Brezinka: Verzeichnis der Vorträge 1951-2008. (Retrospektiven in Sachen Bildung, Reihe 1 (Bibliographie) Nr. 8). Klagenfurt: Bezug über den Herausgeber, Prof. Elmar Lechner, Universität Klagenfurt 2008 (2 Hälften, 85 + XXVII S.) […] [Sammelannotation]
No full textAnnotation zu: 1. Wolfgang Brezinka: Verzeichnis der Vorträge 1951-2008 (Retrospektiven in Sachen Bildung, Reihe 1 (Bibliographie) Nr. 8). Klagenfurt: Bezug über den Herausgeber, Prof. Elmar Lechner, Universität Klagenfurt 2008 (2 Hälften, 85 + XXVII S., ISSN 1019-2379; ); 2. Wolfgang Brezinka: Beiträge zur österreichischen Bildungspolitik 1957-1969 (Retrospektiven in Sachen Bildung, Reihe 10 (Übersehene Quellen) Nr. 30). Klagenfurt: Bezug über den Herausgeber, Prof. Elmar Lechner, Universität Klagenfurt 2008 (3 Drittel, 103 + XXXV S., ISSN 1019-2379; )
Forma y razón histórica del Estado en el pensamiento de Norbert Lechner
No full textThis article examines one of the central approaches
in Norbert Lechner’s theory, who was
one of the most emblematic intellectuals in
Latin America’s studies of political subjectivity.
Based on the diagnosis of a State crisis due to its
functioning as an instrument of domination, the
author conceives it as form and historical reason.
That is, as an imaginary referent that mediates
the social relations between everyday praxis
and institutionality. For him, it is in the microphysical
spaces where the hegemonic struggle,
which must be represented by a general interest,
unfolds. Without this mediation and ethical
content, the State becomes a simple reproductive
device of capitalist relations. Therefore, we
propose that the search for a historical perspective
within the conceptualization of the State
constitutes one of the bases that support Norbert
Lechner’s theory of political subjectivity.El presente artículo revisa uno de los planteamientos
centrales en la teoría de Norbert
Lechner, quien fue uno de los intelectuales más
representativos de los estudios de subjetividad
política en América Latina. A partir del diagnóstico
de una crisis de Estado operada por
su funcionamiento como instrumento de dominación,
el autor formula una concepción
de éste como forma y razón histórica, es decir,
como un referente imaginario que medie las relaciones
sociales entre la praxis cotidiana y la
institucionalidad. Para Lechner, es en los espacios
microfísicos donde se despliega la lucha
hegemónica que debe ser representada por un
interés general. Sin esa mediación y sin contenido
ético, el Estado deviene en mero aparato
reproductor de relaciones capitalistas. Proponemos
que la búsqueda de una conceptualización
con perspectiva histórica, se constituye en una
de las bases que sustentan la teoría de la subjetividad
política de Norbert Lechner
Characterization and Setting of Fast Multiplexing Readout Electronics for a Multicell Silicon Drift Detector Used in X-Ray Spectroscopy
No full textA silicon drift detector (SDD) module has been developed to be used in high-time resolution X-ray spectroscopy. The module consists of a 19-cell SDD chip and three readout application-specific integrated circuits (ASICs). With respect to timing and energy resolution, the readout ASIC with its programmable setting parameters is characterized. Based on the results of this characterization, analytical rules for these setting parameters are established to obtain the optimum performance of the module. The performance of the module is verified by means of measurements. With the ascertained parameter values and selecting the available shaping time of 1.02 μ s, a minimum time interval of 1.87 μ s between pulses and an energy resolution of 176 eV at 5.9 keV and at a temperature of -30°C are achieved
KERBEROS-TAC: a 48-Channel Analog Pulse Processor for X-Ray and Beta Spectroscopy
No full textThis paper presents an analog event processing and acquisition platform, primarily targeting X-ray and electron spectroscopy. It allows the simultaneous acquisition of 48 channels, each one supporting an event rate up to 250 kcps. The main novelty of this version, with respect to a previous implementation named KERBEROS, is the introduction of the timing information in addition to the energy of each detected event. The system is composed of three SFERA-TAC ASICs including a 9 th -order Gaussian shaper with programmable shaping time and a time-to-amplitude converter (TAC) block for each of the 16 channels. The analog outputs (peak energy and time) are multiplexed on-chip at 5 MHz and digitalized off-chip. The FPGA controls the ASICs, produces the timestamps of individual events by combining the TAC values, (relative to clock edges), to the 100 MHz clock cycle, and transfers data to a PC via USB2.0. Experimental results achieved with a 47-pixel monolithic SDD detector developed for the TRISTAN sterile neutrino experiment show the capability of acquiring spectra with state-of-the-art energy resolution, timing linearity (up to 3 μs) of ±1% and temporal resolution of 6 ns FWHM. As example of application enabled by this performance, charge sharing between neighboring detectors is studied and corrected by means of electronic collimation
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