ALBERT — All Library Books, journals and Electronic Records Telegrafenberg

1

Digitale Medien

Going with the flow: Web sites and customer involvement (1999)

Nel, Deon ; Niekerk, Raymond van ; Berthon, Jean-Paul ; [weitere]

Bingley : Emerald

Internet research 9 (1999), S. 109-116

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1066-2243

Quelle: Emerald Fulltext Archive Database 1994-2005

Thema: Informatik

Notizen: This paper investigates a structure of commercial Web sites, and then attempts to analyse various patterns that emerge which may be of future use as a guideline to businesses that intend establishing a Web presence. Key to the understanding of these patterns is a clearer grasp of the implications of human interaction with the new medium. The focus is on an experiential construct, namely flow, and how this might vary by Web site, and on using this to begin to unravel the secrets of good commercial Web site design and its implications for business.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1108/10662249910264873

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

2

Digitale Medien

Peculiar progress (1987)

Davies, Tony

[s.l.] : Nature Publishing Group

Nature 327 (1987), S. 110-111

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] IT is a common problem among teachers that ignorance of a particular phenom-endn is difficult to impart; the rapt student often wishes only for the comfortable wash of supposedly hard facts. Research workers, on the other hand, must start from the premise fhat the contemporary array of knowledge is ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/327110b0

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

3

Digitale Medien

Off target (1989)

Davies, Tony

[s.l.] : Nature Publishing Group

Nature 340 (1989), S. 110-110

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] HYBRIDOMAS growing in vitro or in vivo can generate large quantities of antibody molecules with a wide range of binding specificities. That capacity has acted as a catalyst to the concept that drugs can be taken to their targets on the back of carrier molecules. The broad strategies are now well ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/340110b0

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

4

Digitale Medien

Magic bullets (1981)

Davies, Tony

[s.l.] : Nature Publishing Group

Nature 289 (1981), S. 12-13

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] THE possibility of constructing Zauberkugeln - magic bullets - was firstthought of by Paul Ehrlich in his inspired attempts to find new cures for a variety of human diseases. Magic bullets, he said, would have some of the properties of the antibodies then newly discovered by Behring and would be ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/289012a0

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

5

Digitale Medien

Records of cancer control (1984)

Davies, Tony

[s.l.] : Nature Publishing Group

Nature 311 (1984), S. 318-319

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] Cancer Investigation. Editor-in-chief Yashar Hirshaut. Dekker. 6/yr. 95 (US), 111.50 (elsewhere). Journal of Biological Response Modifiers. Editor-in-chief Robert K. Oldham. Raven. 6/yr. 80 (personal); 105 (institutional). Clinical & Experimental Metastasis. Editors K. Hellman, G.Nicolson, L. ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/311318b0

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

6

Unbekannt

Postdefoliation ecosystem carbon and water flux and canopy growth dynamics in sagebrush steppe bunchgrasses (2016)

Erik P. Hamerlynck, Roger L. Sheley, Kirk W. Davies, Tony J. Svejcar

Wiley

In: Ecosphere

zur Merkliste hinzufügen auf der Merkliste

Details

Publikationsdatum: 2016-07-08

Beschreibung: Developing land-use practices that lead to sustainable net primary productivity in rangelands are important, but understanding their consequences to population and community processes is not often accounted for in basic ecosystem studies. Grazed and ungrazed upland ecosystems generally do not differ in net ecosystem CO 2 exchange (NEE), but the underlying mechanisms and the concurrent effects of defoliation to vegetative and reproductive biomass allocation are unclear. To address this, we measured evapotranspiration (ET), NEE, and its constituent fluxes of ecosystem respiration (R eco ) and gross ecosystem photosynthesis (GEP) with live canopy leaf area index (LAI live ; m 2 live leaf area/m 2 ground area) and aboveground leaf, culm, and reproductive biomass in plots of clipped and unclipped squirreltail ( Elymus elymoides ) and bluebunch wheatgrass ( Pseudoroegneria spicata ) growing in intact sagebrush steppe. Clipping reduced LAI live by 75%, but subsequent re-growth rates in clipped plots was similar to LAI live accumulation in unclipped plots. Concurrently, ET and NEE was similar between clipped and unclipped plots, with NEE primarily determined by GEP. GEP was initially lower in clipped plots, but then converged with unclipped GEP even as LAI live continued to increase in both treatments. GEP convergence was driven by higher whole-plant photosynthesis (GEP live = GEP/LAI live ) in clipped plots. Ecosystem water use efficiency (GEP/ET) was reduced by 16% with clipping, due to low GEP/ET 2 weeks following defoliation, but GEP/ET converged before GEP levels did. Proportional reproductive biomass was higher in E. elymoides (21.4% total biomass) than in P. spicata (0.5% total biomass) due to lower allocation to specific leaf and culm mass. Clipping reduced reproductive effort in E. elymoides , in terms of total reproductive biomass (−56%), seed mass per unit leaf area (−64%), and seed mass per flowering head (−77%). We concluded defoliation increased canopy-level light penetration, facilitating rapid recovery of ecosystem fluxes, but that allocation to vegetative regrowth supporting this led to lower reproductive effort in these range grasses. Insights from studies such as this will be useful in formulating systems-based land management strategies aimed at maintaining annual productivity and long-term population and community goals in semiarid rangeland ecosystems.

Digitale ISSN: 2150-8925

Thema: Energietechnik