David W. Stewart is President's Professor of Marketing and Law at Loyola Marymount. He is the current editor of the Journal of Public Policy and Marketing and a past editor of both the Journal of Marketing and the Journal of the Academy of Marketing Science. He has previously served on the faculty and in various administrative roles at Vanderbilt University, University of Southern California, and the University of California, Riverside.
Studied the effectiveness of direct comparative advertising. Data provided by a commercial advert... more Studied the effectiveness of direct comparative advertising. Data provided by a commercial advertising testing service were analyzed for 1,016 ads. The efficacy of direct comparative ads was contingent on the relative market position of the advertised brand. For established brands with very low market shares, direct comparative ads were more effective than indirect comparative and noncomparative at persuading Ss to choose the advertised brand. Direct comparative ads were also more effective for promoting very high share brands. All 3 types of ads seemed about equally effective for promoting moderate share or parity brands. (PsycINFO Database Record (c) 2012 APA, all rights reserved)
the individual -- the purposes and functions served by various media for individuals. Much that w... more the individual -- the purposes and functions served by various media for individuals. Much that we suggested about the evolution of media has come to pass with the rise of the Internet, interactive television, and mobile communication. Thus, in the present chapter we will focus less on the effects of traditional media in advertising, and more on the influences of the new media within the broader context of marketing communications. Our primary concern in this chapter is with media effects on individuals exposed to, interacting with and responding to marketing communications, rather than with the effects of specific media characteristics on managerial decisions about marketing communications. That is, it is not unusual for the characteristics of particular media to influence managerial decisions: whether to advertise or not, how much to spend on it, what particular media types and/or vehicles to use. Nonetheless, it is necessary that we address some issues related to the way in which p
... derived categorization. The authors discuss implications of these findings for theory and pra... more ... derived categorization. The authors discuss implications of these findings for theory and practice. The Differential Impact of Goal Congruency on Attitudes, Intentions, and the Transfer of Brand Equity Perceived similarity plays ...
ABSTRACT Three studies find that when individuals become less confident that what they yearn for ... more ABSTRACT Three studies find that when individuals become less confident that what they yearn for is possible (i.e., when hope is threatened) they engage in motivated reasoning related to products that purport to enable goal attainment. Specifically, they (a) selectively search for information from a product-favorable information source, (b) regard this information as more credible, and (c) are less discriminating of low-credibility message arguments. They also (d) require more negative information before they feel that they are able to evaluate a product's effectiveness and (e) are more likely to judge the product as effective at helping them attain their goal. (c) 2007 by JOURNAL OF CONSUMER RESEARCH, Inc..
Purpose – This study aims to examine the moderating effects of two important consumer characteris... more Purpose – This study aims to examine the moderating effects of two important consumer characteristics (product familiarity and risk aversion) on the relationships between two intransient cues (store image and product signatureness) and consumer quality perception of private label, as well as the interaction between the cues themselves. Design/methodology/approach – This paper employs survey research to test three main hypotheses.
Transport in magnetic multilayers is often dictated by the quality of the interfaces between adja... more Transport in magnetic multilayers is often dictated by the quality of the interfaces between adjacent layers. Often experimental characterization of atomic concentration profiles at these interfaces is almost impossible. In this study, we model ion beam deposition of a CoCu (110) magnetic multilayer using a molecular dynamics (MD) technique based on a newly developed embedded atom potential database. The MD
Surface-water flow velocity in the wetlands of Taylor Slough, Everglades National Park, is contro... more Surface-water flow velocity in the wetlands of Taylor Slough, Everglades National Park, is controlled by factors such as water depth, land- surface gradient, wind effects, and the type and density of vegetation. In order to evaluate the effect of vegetation on this shallow surface-water flow for model development, it is necessary to extrapolate from point measurements of velocity and surface-water
The blueprint for cellular diversity and response to environmental change is encoded in the cis-a... more The blueprint for cellular diversity and response to environmental change is encoded in the cis-acting regulatory sequences of most genes. Deciphering this 'cis-regulatory code' requires multivariate data sets that examine how these regions coordinate transcription in response to diverse environmental stimuli and therapeutic treatments. We describe a transcriptional approach that profiles the activation of multiple transcriptional targets against combinatorial arrays of therapeutic and signal transducing agents. Application of this approach demonstrates how cis-element composition and promoter context combine to influence transcription downstream of mitogen-induced signaling networks. Computational dissection of these transcriptional profiles in activated T cells uncovers a novel regulatory synergy between IGF-1 and CD28 costimulation that modulates NF-kappaB and AP1 pathways through signaling cascades sensitive to cyclosporin A and wortmannin. This approach provides a broad...
To investigate the interaction between two major ear-rotting pathogens, maize ears were inoculate... more To investigate the interaction between two major ear-rotting pathogens, maize ears were inoculated with either Fusarium graminearum, F. moniliforme, or an equal mixture of the two. Silk and kernel tissues were periodically harvested throughout the growing season so that a time course of the experimental variables (disease severity, ergosterol content, fungal DNA content, and mycotoxin concentration) could be recorded. Over the 3 years tested (1992 to 1994), the highest levels of disease and ergosterol were found in the F. graminearum treatment, followed by the mixture treatment (F. graminearum plus F. moniliforme) and, finally, the F. moniliforme treatment. Kernel ergosterol content and disease rating were correlated for both pathogens, but the highest correlation coefficients were obtained in the F. graminearum treatment. The DNA analysis revealed that, in the mixed inoculum, F. moniliforme had a greater growth rate than did F. graminearum. In 1994, appreciable F. moniliforme from ...
Fusarium spp. in maize can contaminate the grain with mycotoxins if environmental conditions are ... more Fusarium spp. in maize can contaminate the grain with mycotoxins if environmental conditions are favorable for fungal growth. To quantify the relationship between growth of Fusarium spp. and environmental conditions, a mathematical model was developed to simulate growth of F. graminearum and F. verticillioides on maize ears following silk inoculation in field experiments from 1992 to 1995. Each species was inoculated separately and as a mixture of the two for 3 of the 4 years on one maize hybrid. Disease progress in ears was measured by a visual rating scale that was converted to percent visual infection. Measurements were made at regular time intervals after silks were inoculated 5 days after silk emergence. Differential equations were used to relate growth rates of Fusarium spp. in maize ears to hourly air temperature and relative humidity and to daily precipitation. Integration of these equations over time produced quantitative estimates of fungal growth. Model calculations compa...
Critical care and resuscitation : journal of the Australasian Academy of Critical Care Medicine, 2012
Extracorporeal life support (ECLS) is a lifesaving technology that is being increasingly used in ... more Extracorporeal life support (ECLS) is a lifesaving technology that is being increasingly used in patients with severe cardiorespiratory failure. However, ECLS is not without risks. The biosynthetic interface between the patient and the circuit can significantly alter inflammation, coagulation, pharmacokinetics and disposition of trace elements. The relative contributions of the pump, disease and patient in propagating these alterations are difficult to quantify in critically ill patients with multiple organ failure. To design a model where the relevance of individual components could be assessed, in isolation and in combination. Four ECLS models were developed and tested - an in-vitro simulated ECLS circuit; and ECLS in healthy sheep, sheep with acute lung injury (ALI), and sheep with ALI together with transfusion of old or new blood. Successful design of in-vitro and in-vivo models. We successfully conducted multiple experiments in the simulated circuits and ECLS runs in healthy an...
IEEE Real Time Technology and Applications Symposium, 2000
An objective of our work is to find more systematic methods of designing and implementing real-ti... more An objective of our work is to find more systematic methods of designing and implementing real-time device drivers for embedded systems. As part of this objective, we answer the question “what is the best sampling rate to use for reading data from sensors that provide continuous data?” Our experiences in answering this question for digital switch and analog sensor inputs
Canadian Journal of Plant Pathology-revue Canadienne De Phytopathologie, 2001
To investigate the effect of different environments on maize resistance to gibberella ear rot, di... more To investigate the effect of different environments on maize resistance to gibberella ear rot, disease symptoms, deoxynivalenol (DON) concentration, and grain yield were measured in three maize (Zea mays L.) inbred lines and five hybrids, from 1994 to1996, at six locations in eastern Canada. At each location, all genotypes were inoculated with a three-isolate macroconidial mix of Fusarium graminearum Schwabe
The use of oncolytic adenoviruses as a cancer therapeutic is dependent on the lytic properties of... more The use of oncolytic adenoviruses as a cancer therapeutic is dependent on the lytic properties of the viral life cycle, and the molecular differences between tumor cells and nontumor cells. One strategy for achieving safe and efficacious adenoviral therapies is to control expression of viral early gene(s) required for replication with tumor-selective promoter(s), partic- ularly those active in a broad
Studied the effectiveness of direct comparative advertising. Data provided by a commercial advert... more Studied the effectiveness of direct comparative advertising. Data provided by a commercial advertising testing service were analyzed for 1,016 ads. The efficacy of direct comparative ads was contingent on the relative market position of the advertised brand. For established brands with very low market shares, direct comparative ads were more effective than indirect comparative and noncomparative at persuading Ss to choose the advertised brand. Direct comparative ads were also more effective for promoting very high share brands. All 3 types of ads seemed about equally effective for promoting moderate share or parity brands. (PsycINFO Database Record (c) 2012 APA, all rights reserved)
the individual -- the purposes and functions served by various media for individuals. Much that w... more the individual -- the purposes and functions served by various media for individuals. Much that we suggested about the evolution of media has come to pass with the rise of the Internet, interactive television, and mobile communication. Thus, in the present chapter we will focus less on the effects of traditional media in advertising, and more on the influences of the new media within the broader context of marketing communications. Our primary concern in this chapter is with media effects on individuals exposed to, interacting with and responding to marketing communications, rather than with the effects of specific media characteristics on managerial decisions about marketing communications. That is, it is not unusual for the characteristics of particular media to influence managerial decisions: whether to advertise or not, how much to spend on it, what particular media types and/or vehicles to use. Nonetheless, it is necessary that we address some issues related to the way in which p
... derived categorization. The authors discuss implications of these findings for theory and pra... more ... derived categorization. The authors discuss implications of these findings for theory and practice. The Differential Impact of Goal Congruency on Attitudes, Intentions, and the Transfer of Brand Equity Perceived similarity plays ...
ABSTRACT Three studies find that when individuals become less confident that what they yearn for ... more ABSTRACT Three studies find that when individuals become less confident that what they yearn for is possible (i.e., when hope is threatened) they engage in motivated reasoning related to products that purport to enable goal attainment. Specifically, they (a) selectively search for information from a product-favorable information source, (b) regard this information as more credible, and (c) are less discriminating of low-credibility message arguments. They also (d) require more negative information before they feel that they are able to evaluate a product's effectiveness and (e) are more likely to judge the product as effective at helping them attain their goal. (c) 2007 by JOURNAL OF CONSUMER RESEARCH, Inc..
Purpose – This study aims to examine the moderating effects of two important consumer characteris... more Purpose – This study aims to examine the moderating effects of two important consumer characteristics (product familiarity and risk aversion) on the relationships between two intransient cues (store image and product signatureness) and consumer quality perception of private label, as well as the interaction between the cues themselves. Design/methodology/approach – This paper employs survey research to test three main hypotheses.
Transport in magnetic multilayers is often dictated by the quality of the interfaces between adja... more Transport in magnetic multilayers is often dictated by the quality of the interfaces between adjacent layers. Often experimental characterization of atomic concentration profiles at these interfaces is almost impossible. In this study, we model ion beam deposition of a CoCu (110) magnetic multilayer using a molecular dynamics (MD) technique based on a newly developed embedded atom potential database. The MD
Surface-water flow velocity in the wetlands of Taylor Slough, Everglades National Park, is contro... more Surface-water flow velocity in the wetlands of Taylor Slough, Everglades National Park, is controlled by factors such as water depth, land- surface gradient, wind effects, and the type and density of vegetation. In order to evaluate the effect of vegetation on this shallow surface-water flow for model development, it is necessary to extrapolate from point measurements of velocity and surface-water
The blueprint for cellular diversity and response to environmental change is encoded in the cis-a... more The blueprint for cellular diversity and response to environmental change is encoded in the cis-acting regulatory sequences of most genes. Deciphering this 'cis-regulatory code' requires multivariate data sets that examine how these regions coordinate transcription in response to diverse environmental stimuli and therapeutic treatments. We describe a transcriptional approach that profiles the activation of multiple transcriptional targets against combinatorial arrays of therapeutic and signal transducing agents. Application of this approach demonstrates how cis-element composition and promoter context combine to influence transcription downstream of mitogen-induced signaling networks. Computational dissection of these transcriptional profiles in activated T cells uncovers a novel regulatory synergy between IGF-1 and CD28 costimulation that modulates NF-kappaB and AP1 pathways through signaling cascades sensitive to cyclosporin A and wortmannin. This approach provides a broad...
To investigate the interaction between two major ear-rotting pathogens, maize ears were inoculate... more To investigate the interaction between two major ear-rotting pathogens, maize ears were inoculated with either Fusarium graminearum, F. moniliforme, or an equal mixture of the two. Silk and kernel tissues were periodically harvested throughout the growing season so that a time course of the experimental variables (disease severity, ergosterol content, fungal DNA content, and mycotoxin concentration) could be recorded. Over the 3 years tested (1992 to 1994), the highest levels of disease and ergosterol were found in the F. graminearum treatment, followed by the mixture treatment (F. graminearum plus F. moniliforme) and, finally, the F. moniliforme treatment. Kernel ergosterol content and disease rating were correlated for both pathogens, but the highest correlation coefficients were obtained in the F. graminearum treatment. The DNA analysis revealed that, in the mixed inoculum, F. moniliforme had a greater growth rate than did F. graminearum. In 1994, appreciable F. moniliforme from ...
Fusarium spp. in maize can contaminate the grain with mycotoxins if environmental conditions are ... more Fusarium spp. in maize can contaminate the grain with mycotoxins if environmental conditions are favorable for fungal growth. To quantify the relationship between growth of Fusarium spp. and environmental conditions, a mathematical model was developed to simulate growth of F. graminearum and F. verticillioides on maize ears following silk inoculation in field experiments from 1992 to 1995. Each species was inoculated separately and as a mixture of the two for 3 of the 4 years on one maize hybrid. Disease progress in ears was measured by a visual rating scale that was converted to percent visual infection. Measurements were made at regular time intervals after silks were inoculated 5 days after silk emergence. Differential equations were used to relate growth rates of Fusarium spp. in maize ears to hourly air temperature and relative humidity and to daily precipitation. Integration of these equations over time produced quantitative estimates of fungal growth. Model calculations compa...
Critical care and resuscitation : journal of the Australasian Academy of Critical Care Medicine, 2012
Extracorporeal life support (ECLS) is a lifesaving technology that is being increasingly used in ... more Extracorporeal life support (ECLS) is a lifesaving technology that is being increasingly used in patients with severe cardiorespiratory failure. However, ECLS is not without risks. The biosynthetic interface between the patient and the circuit can significantly alter inflammation, coagulation, pharmacokinetics and disposition of trace elements. The relative contributions of the pump, disease and patient in propagating these alterations are difficult to quantify in critically ill patients with multiple organ failure. To design a model where the relevance of individual components could be assessed, in isolation and in combination. Four ECLS models were developed and tested - an in-vitro simulated ECLS circuit; and ECLS in healthy sheep, sheep with acute lung injury (ALI), and sheep with ALI together with transfusion of old or new blood. Successful design of in-vitro and in-vivo models. We successfully conducted multiple experiments in the simulated circuits and ECLS runs in healthy an...
IEEE Real Time Technology and Applications Symposium, 2000
An objective of our work is to find more systematic methods of designing and implementing real-ti... more An objective of our work is to find more systematic methods of designing and implementing real-time device drivers for embedded systems. As part of this objective, we answer the question “what is the best sampling rate to use for reading data from sensors that provide continuous data?” Our experiences in answering this question for digital switch and analog sensor inputs
Canadian Journal of Plant Pathology-revue Canadienne De Phytopathologie, 2001
To investigate the effect of different environments on maize resistance to gibberella ear rot, di... more To investigate the effect of different environments on maize resistance to gibberella ear rot, disease symptoms, deoxynivalenol (DON) concentration, and grain yield were measured in three maize (Zea mays L.) inbred lines and five hybrids, from 1994 to1996, at six locations in eastern Canada. At each location, all genotypes were inoculated with a three-isolate macroconidial mix of Fusarium graminearum Schwabe
The use of oncolytic adenoviruses as a cancer therapeutic is dependent on the lytic properties of... more The use of oncolytic adenoviruses as a cancer therapeutic is dependent on the lytic properties of the viral life cycle, and the molecular differences between tumor cells and nontumor cells. One strategy for achieving safe and efficacious adenoviral therapies is to control expression of viral early gene(s) required for replication with tumor-selective promoter(s), partic- ularly those active in a broad
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Papers by David Stewart