454 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
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
The Old World and the New: Negotiating Past, Present, and Future in Anglo-American Humour, 1880-1900
No full textBOB NICHOLSON, in a transatlantic comparison of late-Victorian usage of history in newspaper joke columns and comic novels, observes a struggle on the part of Britain to come to terms with America’s increasing economic and cultural superiority. Thus, joke writers and literary humorists tended to “juxtapose images of the American future with those of an idealised British past” and emphasised the “centrality of history to British national identity at a time when the country’s future was beginning to look increasingly uncertain.” This uncertainty may also be observed in the fact that British humorists turned to the past in the attempt to reaffirm British superiority, yet the popular reception of transatlantic humour at the same time indicates an acceptance of modern American culture in Britain
Serializing the Past in and out of the Leisure Hour: Historical Culture and the Negotiation of Media Boundaries
No full textThis article explores the media transfer between books and periodicals by example of historical narratives serialized within the Religious Tract Society’s family magazine Leisure Hour (1852-1905). A look at the travelling of texts and ideas between these two media shows that the RTS not only negotiated media boundaries but operated at the intersection of other categories, such as class and gender, linked to the reputation of the different media as well as modes of representation and approaches to history. In a combination of book history and periodical studies under a historical culture perspective, the article focuses on three case studies: (1) the transition from book into periodical serial and the (re)appropriation of history for a working-class audience; (2) the collection of a periodical series into book form and the author’s boundary-work under the regulation of the RTS; (3) the transfer of material features in the creation of monthly parts and shift in historical genre.Cet article examine le transfert médiatique entre livres et périodiques, à partir de l’exemple des récits historiques parus dans le magazine familial « Leisure Hour » (1852-1905), publié par la Religious Tract Society (RTS). L’analyse de la migration des textes et idées entre ces deux supports révèle que la RTS en défiait les frontières, adaptant ses modes de représentation et approches de l’histoire plutôt en fonction d’autres facteurs, tels que la classe sociale et le sexe. En combinant histoire du livre et études des périodiques dans une perspective historico-culturelle, cet article se concentre sur trois études de cas: (1) le passage de livre à périodique et la réappropriation de l’histoire pour un public de la classe ouvrière; (2) la publication d’un feuilleton sous forme de livre et le travail de transposition régi par la RTS; (3) l’actualisation des caractéristiques matérielles et du genre historique dans le passage aux épisodes mensuels
ultrasoundtransmission velocity of the alveoarbone at patients with dental implants
No full textUltraschalltransmissions-Geschwindigkeitsmessung des Alveolarknochens bei Patientinnen mit Implantaten und behandelter parodontaler Erkrankung
3 Jahres Kohortenstudie
Ziel: Das Ziel dieser 3 Jahres Kohortenstudie ist es, den Einfluss der durch die UTG-Messungen bestimmten Alveolarknochendichte auf den Langzeiterfolg von Implantaten bei Patienten mit behandelter parodontaler Erkrankung zu untersuchen.
Material und Methode: An der Untersuchung nahmen insgesamt 20 Patientinnen mit behandelter generalisierter aggressiver (GAP) und generalisierter chronischer Parodontitis (GCP) und dentalen Implantaten teil (n=74).
Nach Eingliederung der Suprakonstruktionen wurden die Patientinnen im Rahmen eines 3-monatigen Recalls über einen Zeitraum von 3 Jahren nachuntersucht. In jeder Sitzung wurden an Zähnen und Implantaten klinische Parameter erhoben. Radiologische Kontrollen durch Einzelfilmaufnahmen erfolgten vor Insertion der Implantate, nach Eingliederung der Suprakonstruktion sowie 1 und 3 Jahre später. Die intraorale Bestimmung der Knochendichte am Alveolarknochen erfolgte 3 Jahre nach Insertion der Suprakonstruktion durch Ultraschalltransmissions-Geschwindigkeit (UTG) und an der Lendenwirbelsäule durch Dual-X-Ray (DXA) Messungen.
Ergebnisse: Im gesamten Untersuchungszeitraum wiesen die Zähne und die Implantate der Patientinnen gesunde parodontale bzw. periimplantäre Verhältnisse auf. Der radiologische Knochenverlust nach 3 Jahren betrug an allen Implantaten ≤ 0,2 mm.
Bei allen Patientinnen korrelierten die UTG-Daten signifikant mit den DXA-Messergebnissen (p ≤ 0,01). Die UTG- und DXA-Messungen wiesen bei 30% (n=6) der Patientinnen auf Osteoporose oder Osteopenie hin.
Conclusion: Die Ergebnisse zeigen, dass die UTG-Messung zur noninvasiven Bestimmung der Alveolarknochendichte geeignet ist. Alle Patientinnen mit behandelten parodontalen Erkrankungen und Implantaten wiesen auch bei einer geringen Knochendichte weder an den Zähnen noch an Implantaten einen erhöhten Attachmentverlust auf.Ultrasound Transmission Velocity measurement on female patients with treated periodontal diseases and implants
R. Mengel, P. Hadji, P. Kann, B. Lechner
The aim of the clinical study on female patients with treated periodontal diseases and implants was the determination of the bone mineral density from mandibula and maxilla using a Ultrasound Transmission Velocity (UTV, DBM Sonic 1200, Italy) measurement. 20 edentulous patients with GAP and GCP (average age: 55,5 years, all non-smokers) got 74 implants (MK II, Nobel Biocare, Zürich, Swiss and Osseotite 3i, West Palm Beach, FL, USA) inserted. After integration of the implants’ superstructures the patients have been controlled in a 3-month-recall over a period of 2 to 5 years. In each session the clinical parameters on teeth and implants were recorded. Radiological check-ups with dental X-rays were made before implantation, after integration of the superstructures and 1, 3 and 5 years later. The determination of the bone mineral density was measured by UTV 3 years after integration of the superstructures and controlled by computerized X-ray densitometry, too. The clinical examination showed a loss of attachment of 0.15mm (teeth) and 0.41mm (implants) per year. The bone loss averaged out at 0.21 % (teeth) and at 0.15mm (implants) per year. UTV diagnostics gave hints of osteoporosis (1435 m/s) by two patients and of osteopenia (1516 m/s) by 4 women. The analogical Dual X-ray (DXA) values were T-scores ≤ -2.5 for osteporosis and T-scores -1.5 to -2.5 for osteopenia. The patients with osteoporosis or osteopenia showed no difference concerning clinical and radiological results on teeth and and implants in comparison to healthy patients. The UTV scores were compared to DXA-data statistically and showed good correlation. The intraoral measurement of Ultrasound Transmission Velocity seems to be a non invasive, sufficient alternative for bone density measurements of the alveolar ridge due to the high correspondency between the UTV and DXA data
O PENSAMENTO POLÍTICO DE NORBERT LECHNER E O PAPEL DA IDEIA DE UTOPIA DO CONSENSO COMO FUNDAMENTO DA DEMOCRACIA
No full textThis article analyzes the contributions of Norbert Lechner\u27s political thinking to the understanding of the democratic political order, its role in the constitutions of the symbolic sense of collective life and its fundament from the secularization of power by modernity. The text initially highlights the relevance of the theme of political order and its role in fixing the idea of certainty and security for collective coexistence. Then, it emphasizes the links established by the author\u27s thinking between democratic political order, pluralism and secularization of the world. Finally, it analyzes consensus as a possible utopia that fundament the democratic political order. For the realization this research, the hypothetical-deductive method and the bibliographic technique were used.O presente artigo analisa as contribuições do pensamento político de Norbert Lechner para a compreensão da ordem política democrática, seu papel nas constituições do sentido simbólico da vida coletiva e seu fundamento a partir da secularização do poder pela modernidade. O texto destaca inicialmente a relevância do tema da ordem política e seu papel na fixação da ideia de certeza e de segurança para a convivência coletiva. Em seguida, enfatiza os vínculos estabelecidos pelo pensamento do autor entre ordem política democrática, pluralismo e secularização do mundo. Por fim, analisa o consenso como uma utopia possível que fundamenta a ordem política democrática. Para a realização desta pesquisa, foram utilizados o método hipotético-dedutivo e a técnica de pesquisa bibliográfica
5. Serialising History into and out of the Leisure Hour: The Periodical and Book Transfer
No full text- …
