Measuring presence in virtual environments: A presence questionnaire

BG Witmer, MJ Singer - Presence, 1998 - direct.mit.edu
The effectiveness of virtual environments (VEs) has often been linked to the sense of
presence reported by users of those VEs. (Presence is defined as the subjective experience of …

Quantitative reverse transcription–polymerase chain reaction to study mRNA decay: comparison of endpoint and real-time methods

…, BA Zakrajsek, AG Mills, V Gorn, MJ Singer… - Analytical …, 2000 - Elsevier
Four quantitative reverse transcription–PCR (RT-PCR) methods were compared to evaluate
the time course of mRNA formation and decay. Mouse fibroblasts (NIH 3T3) transfected with …

3′-minor groove binder-DNA probes increase sequence specificity at PCR extension temperatures

…, EA Lukhtanov, ES Belousov, MJ Singer… - Nucleic acids …, 2000 - academic.oup.com
DNA probes with conjugated minor groove binder (MGB) groups form extremely stable
duplexes with single-stranded DNA targets, allowing shorter probes to be used for hybridization …

The factor structure of the presence questionnaire

BG Witmer, CJ Jerome, MJ Singer - Presence: Teleoperators & Virtual …, 2005 - direct.mit.edu
Constructing a valid measure of presence and discovering the factors that contribute to
presence have been much sought after goals of presence researchers and at times have …

Critical evaluation of the use of laser diffraction for particle‐size distribution analysis

…, GJ Levy, U Mingelgrin, MJ Singer - Soil Science Society of …, 2004 - Wiley Online Library
Determination of soil particle‐size distribution (PSD) by sieving, hydrometer, and pipette
methods as well as by laser diffraction (LD) suffers from inherent flaws, mainly due to the …

[BOOK][B] Simulation fidelity in training system design: Bridging the gap between reality and training

RT Hays, MJ Singer - 2012 - books.google.com
Business, academia, industry, and the military require well trained personnel to function in
highly complex working environments. To reduce high training costs and to improve the …

Spatial variability of wheat yield and soil properties on complex hills

MP Miller, MJ Singer, DR Nielsen - Soil Science Society of …, 1988 - Wiley Online Library
Surface soil and wheat yield were sampled on a 400‐ by 250‐m grid to determine the
relationship between wheat yield and soil properties influenced by erosion. The study, located in …

Pedogenesis and paleoclimate: Interpretation of the magnetic susceptibility record of Chinese loess-paleosol sequences

KL Verosub, P Fine, MJ Singer, J TenPas - Geology, 1993 - pubs.geoscienceworld.org
… On the basis of our work with soil chronosequences (Fine et al., 1989; Singer et al., 1992)
and with the relative CBD solubilities of magnetic minerals (Fine and Singer, 1989; Singer et al.…

[PDF][PDF] Soil quality

MJ Singer, RE Sojka - 2002 - eprints.nwisrl.ars.usda.gov
Soil—the thin, unconsolidated, vertically differentiated portion of the Earth's surface—is
ubiquitous and often ignored despite its many important environmental and life-sustaining …

Crust formation effects on soil erosion processes

DC Moore, MJ Singer - Soil Science Society of America …, 1990 - Wiley Online Library
Soil seals and crusts reduce soil infiltration rates and increase soil strength. How they affect
the erosion process is not entirely clear. Effects of soil crusts at different stages of formation …