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Asle FagerstrømAuthor Vitae Gheorghita GhineaAuthor Vitae 《International Journal of Information Management》2011,31(2):103-110
Do online recommendations have the same motivating impact as price at the point of online purchase? The results (n = 268) of an conjoint study show that: (1) when the price is low or high relatively to market price, it has the strongest impact (positive and negative) on the likelihood of an online purchase of an mp3 player, (2) when the price is average to market price, online recommendation and price are equal in their impact at the point of online purchase, and, (3) the relative impact from price increases when online shopping frequencies increases. The implications these results give are that online retailers should be aware that online recommendations are not as influential as a good offer when consumers purchase electronics online. However, other customer recommendations have a stronger impact on novice online shoppers than towards those consumers that shop more frequently online. 相似文献
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Exploring solutions for mobile companionship: A design research approach to context-aware management
Tor-Morten Grønli Gheorghita Ghinea Bendik Bygstad 《International Journal of Information Management》2013
The mobile phone is not just another device; it is with you day and night, and you rely on its capabilities in work and in private. In short, the mobile phone is your companion. As your companion, it should understand your situational and informational needs. How do we increase the friendliness of your mobile phone, in order to fulfil this promise? In this paper, we explore how context awareness can be used for managing the user mobile experience. To this end, we employed a design research approach to integrate context-aware and cloud based services in an Android application. Through a user evaluation and proof-of-concept implementation we show how new technologies can increase the friendliness of your mobile phone. In so doing, we provide evidence that adaptive applications based on user context offer a fertile ground for taking mobile companionship to the next level. 相似文献
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Gheorghita Ghinea Sherry Y. Chen 《British journal of educational technology : journal of the Council for Educational Technology》2003,34(4):393-406
Multimedia technology has been widely used in web‐based instruction, but previous studies have indicated that individual differences, especially cognitive styles, have significant effects on users’ preferences with respect to presentation of multimedia content. However, such research has thus far neglected to examine the effect of cognitive styles on users’ subjective perceptions of multimedia quality. This study aims to examine the relationships among users’ cognitive styles, the multimedia Quality of Service (QoS) delivered by the underlying network, and Quality of Perception (QoP), which encompasses user levels of enjoyment and understanding of the informational content provided by multimedia material. Accordingly, 132 users took part in an experiment in which they were shown multimedia video clips presented with different values of two QoS parameters (frame rate and colour depth). Results show that, whilst the two QoS parameters do not impact user QoP, multimedia content and dynamism levels significantly influence the user understanding and enjoyment component of QoP. 相似文献
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Morten Andersen-Gott Gheorghita Ghinea Bendik Bygstad 《International Journal of Information Management》2012
Many researchers have pointed out that the open source movement is an interesting phenomenon that is difficult to explain with conventional economic theories. However, while there is no shortage on research on individuals’ motivation for contributing to open source, few have investigated the commercial companies’ motivations for doing the same. A case study was conducted at three different companies from the IT service industry, to investigate three possible drivers: sale of complimentary services, innovation and opensourcing (outsourcing). We offer three conclusions. 相似文献
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Ghinea R Ugarte-Alvan L Yebra A Pecho OE Paravina RD Perez Mdel M 《Journal of Zhejiang University. Science. B》2011,12(7):552-562
This study deals with the influence of surface roughness on the color of resin composites. Ten resin composites (microfilled,
hybrid, and microhybrid) were each polished with 500-grit, 1 200-grit, 2 000-grit, and 4 000-grit SiC papers. The roughness
parameter (R
a) was measured using a Plμ confocal microscope, and field-emission scanning electron microscope (Fe-SEM) images were used
to investigate filler morphology. Color was measured using a spectroradiometer and a D65 standard illuminant (geometry diffuse/0°
specular component excluded (SCE) mode). Surface roughness decreased with grit number and was not influenced by filler size
or size distribution. A significant influence of R
a on lightness (L*) was found. Lightness increased with decreases in roughness, except for specimens that underwent polishing procedure 4 (PP4;
500-grit, 1 200-grit, 2 000-grit, and 4 000-grit SiC papers consecutively). Generally, it was found that surface roughness
influenced the color of resin composites. The composites that underwent PP1 (500-grit SiC paper) exhibited significant differences
in chroma (C*), hue (h°), and lightness (L*) compared to composites that underwent PP3 (500-grit, 1 200-grit, and 2 000-grit SiC papers consecutively) and PP4. Color
difference (ΔE*) between the polishing procedures was within acceptability thresholds in dentistry. 相似文献
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