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A Living Room on Wheels! Mechanisms Behind Customers’ Perceived Fun of Self-Driving Cars
No full textThe market of self-driving cars (SDCs) is rising, resulting in research needs and opportunities for investigating customers’ attitudes toward SDCs. Focusing on the niche market of turning SDCs into living rooms, this study examines the mechanisms behind customers’ perceived fun of SDCs. Taking attitudes toward new technology and driving conventional cars as two major antecedents, our hypothetical model is based on the theoretical support of the technology acceptance model. A total of 411 online survey responses were collected from Japanese car owners. Images showing SDCs as living rooms on wheels were presented in the survey. The results revealed that the perceived usefulness and ease of use of SDCs increased the fun of SDCs, while the perceived risk of SDCs reduced the fun of SDCs. The acceptance and rejection of new technology exerted opposite effects on the perceived usefulness and fun of SDCs and perceived risk of SDCs. The fun of driving conventional cars increased the perceived risk of SDCs, whereas the frustration of driving conventional cars led to the perceived usefulness and ease of use of SDCs. The findings of this study offer meaningful theoretical and practical implications.The Version of Record of this article was published in Digital Society and is available online at the publisher’s website: https://doi.org/10.1007/s44206-025-00172-zjournal articl
In-Vitro and In-Vivo Experiments Can Lead to Opposite Conclusions -A Consideration from a Series of Experiments on the Relationship Between Throbber Rotation Speed and Perceived Waiting Time-
No full textusing either in-vitro as controlled situation or in-vivo experiments in realistic situation. Although both methods are used for comprehending complementary and multifaceted insights into the target in biology, most HCI studies usually corroborate in-vitro results with in-vivo ones. In this paper, we reported a concrete example that the results of in-vitro and in-vivo experiments were different and it was only achieved by conducting both experiments that these reasons of these discrepancies were captured. Specifically, we focused on a throbber as a target UI element and investigated how the different attributes of throbbers affect the users’ waiting time perception. The results of four in-vitro experiments showed that the throbber with slower rotational velocities was significantly perceived as being shorter. However, the results of three in-vivo experiments showed that the experimental sites displaying slower throbbers during the waiting time were significantly perceived as being longer. In fact, we could figure out that such discrepancy would be caused by users’ everyday interpretations like “A slower throbber means the network speed is slow” that could not be assumed in in-vitro experiments. We believe that even a seemingly negative result, such as different results obtained in-vitro and in-vivo studies, can deepen the knowledge of the target UI elements. We then strongly argue that a complementary comparison of the UI elements with the findings in in-vitro and in-vivo is very important for HCI researchers.journal articl
Molecular Odor Prediction Using Olfactory Receptor Information
No full textIn fragrance development, the framework development process is a bottleneck from the perspective of labor, cost, and human resource development. Odors vary greatly depending on the structure and functional groups of the molecule. Although odor has been predicted from only the structure of molecules, its practical application remains elusive. In this study, we developed a model for predicting the odor of molecules that have only small differences in structure. Focusing on the mechanism of human olfaction, we divided the mechanism into three levels and constructed three models: a classification model that predicts the presence or absence of binding between molecules and olfactory receptors, a regression model that predicts the strength of binding, and a classification model that predicts the presence or absence of odor based on the strength of binding. Olfactory receptors were used as descriptors to discriminate between similar molecular odors. Our models predicted odor differences between some similar molecules, including optical isomers.journal articl
Exogenous oxidized phytosterol may modulate linoleic acid metabolism through upregulation of fatty acid desaturase in rats
No full textPrevious in vitro studies have indicated that oxidized phytosterol (OPS) exhibits some toxicity; however, the harmful effects of OPS on fatty acid metabolism are not completely understood yet. Therefore, this study examined the effects of exogenous phytosterol (PS) and OPS on growth parameters and lipid metabolism in rats. Rats were provided with AIN-76 basal diet, basal diet +0.5% PS, or basal diet +0.5% OPS. We found that the level of cholesterol and triacylglycerols in the liver was significantly lower in OPS-fed rats than in basal diet-fed rats. The ratio of Δ6 desaturation index (20:3(n-6) + 20:4(n-6))/18:2(n-6) in the plasma was significantly higher in the OPS-fed rats than in the PS-fed rats. Additionally, the proportion of arachidonic acid (20:4) in the liver was significantly higher in the OPS-fed group compared with the control group. The mRNA expression levels of Δ6 and Δ5 desaturases were significantly higher in OPS-fed rats than in basal diet-fed rats, but remained unchanged in PS-fed rats. Moreover, the protein level of Δ6 desaturase was significantly higher in both PS- and OPS-fed rats compared with basal diet-fed rats, while the protein level of Δ5 desaturase tended to be higher only in OPS-fed rats than in basal diet-fed rats. Thus, exogenous OPS, but not PS, altered fatty acid composition through the upregulation of mRNA and protein levels of fatty acid desaturation enzymes in the liver. This indicates that exogenous OPS, unlike PS, may modulate the production of eicosanoids from arachidonic acid, potentially promoting allergic reactions, inflammation, and atherosclerosis.journal articl
Auch ein Beitrag zur Diskussion über den Sprachursprung aus historischer und gegenwärtiger Sicht
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The way to use “cause”, “factor”, “reason” and “for” in the Junior High School Textbooks
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Consideration of Strengthening Government Control Functions of Opposition Parties in Japan -As a Requirement for Strengthening the Authority of the Cabinet in Diet Deliberations-
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Hashida Sugako’s Oshin Revisited: An Attempt to Historicize the Legendary Drama’s Limitations
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ある外国ルーツの若者が大学進学・卒業・就職に至った過程 -複線径路等至性モデリング（TEM）による分析から-
Get PDF本研究は外国ルーツの若者が高校・大学の進学を経て就職に至る過程の事例を集め、影響を及ぼした要因を探り、進路を考える外国ルーツの子どもたちや、先生・地域支援者などに示すことを目的とする研究の一環である。本稿では一人のブラジルルーツの若者にインタビューを行い、複線径路等至性モデリング（TEM）により分析を行う。その結果は、親の影響や支え、工場で働きたくない気持ち、学校の先生の支え、ロールモデルの存在、経験や仲間を得る機会、強味を持つことが鍵となることを示唆するものであった。journal articl