This work examines the effect of participants' gender and handedness on the perception of short intervals of time. The time estimation task consisted of an empty production procedure with forty trials at each of four intervals of one, three, seven, and twenty seconds. The four target intervals represent a natural logarithmic progression and a series that bracket important temporal thresholds. The order of presentation of those intervals was randomized across participants but yoked across the sexes in each of the respective dominant hand groups. The two between-subject factors, with two levels each, were sex and handedness. Participants produced forty estimates at each of the required intervals, which was the first within-subject factor, estimated interval being the other. T-tests were conducted on the dependent measures, the time estimates in terms of their variability and their central tendency with respect to the target duration. If handedness plays a significant role in timing, this may indicate differences between hemispheric functioning as a possible causal mechanism. If there is cerebral asymmetry in time perception, namely if one hemisphere is more competent regarding time perception, accuracy in judging duration should be higher for the contralateral hand. The results of the present study indicated that there are no significant differences in performance between right-handed and left-handed participants, or between male and female participants, in the estimation of short intervals of time.

Managing Monarch butterfly overwintering groves: making room among the eucalyptus Proper management and conservation of the coastal California overwintering sites used by western Monarch butterflies (Danaus plexippus L.) is critical for continued use of these sites by monarchs. Many management efforts are currently concentrating on eucalyptus-only sites because of the prevailing notion that monarchs prefer eucalyptus over native tree species. Yet, whether a preference exists or not has never been tested. Herein, we test the “eucalyptus preference” hypothesis with data from five overwintering sites comprised of blue gum eucalyptus (Eucalyptus globulus) and at least one other native tree species from fall 2009 to spring 2012. We found that when monarchs clustered disproportionately on a tree species relative to its availability, they clustered significantly more than expected on native trees and significantly less than expected on eucalyptus. Also, in years when the overwintering population was highest, monarchs clustered disproportionately on native conifers, and they often switched from clustering on eucalyptus in the early winter to native conifers in the middle or late winter. Our results suggest that overwintering groves should be managed to include a mixture of tree species. We cannot recommend simply planting more eucalyptus. At overwintering sites in central coastal California, native conifers such as Monterey cypress (Hesperocyparis macrocarpa) and pitch canker-resistant Monterey pine (Pinus radiata) should be planted as replacements for blue gum eucalyptus in areas where trees are likely to fall, and around the perimeter of groves. Testing the Monarch butterfly eucalyptus preference hypothesis at California overwintering sites Western Monarch butterflies (Danaus plexippus L.) overwinter in groves of native and non-native trees along the California coast. Eucalyptus is abundant in coastal counties, and overwintering monarchs utilize this type of tree more than any other. This has led to the belief that monarchs prefer eucalyptus. Yet whether a preference exists has never been tested. We tested the “eucalyptus preference” hypothesis at five California overwintering sites with canopies comprised of eucalyptus and at least one native conifer species. We found that at no time over the course of three years did monarchs cluster on trees in proportion to their availability in the canopy. Overall, they did not cluster on one tree species significantly more frequently than another, indicating that monarchs do not prefer eucalyptus—or any tree species—all of the time. However, more often than not monarchs clustered significantly more than expected on native trees, particularly at midseason when the weather was most inclement. They also clustered disproportionately on native conifers when the overwintering population size was highest. At most sites monarchs exhibited tree switching, shifting from eucalyptus to native conifers in the middle or late winter. Based on these results, we reject the “eucalyptus preference” hypothesis. In its place, we propose the “conditional preference hypothesis”, wherein monarchs are predicted to prefer cluster trees according to microclimate conditions and prefer alternate trees within a site as climatic conditions change. Rejection of the eucalyptus preference hypothesis suggests that sites comprised exclusively of eucalyptus may not offer monarchs a suitable range of microhabitats, and further suggests we should rethink “eucalyptus-centric” management. Monarch butterflies overwintering in coastal California: low site fidelity and high intersite movement Western monarch butterflies (Danaus plexippus L.) overwinter in large aggregations at hundreds of sites along the California coast. Management plans and census methods are both founded on the assumption that individual monarchs arrive at an overwintering site in the fall and stay at that site for the winter. Though populations potentially coalesce en masse from autumnal sites onto climax overwintering sites, very little individual movement between sites is inferred. Monarch movement is therefore thought to be primarily into sites (as opposed to out of or among them). We refer to this assumption and inference as the accrual hypothesis. In light of previous studies that provide evidence for movement among sites, we propose that overwintering monarchs may belong to a superpopulation. The existence of a superpopulation comprised of individuals moving in and out of sites would force us to rethink our ideas of landscape-level resource use by monarchs, our site-centric (rather than landscape-level) management strategies, and our abundance estimation techniques, which employ closed population models. We tested the closed population model, the accrual hypothesis, and the superpopulation model at three California overwintering sites using a mark-resight study design. We found that a large proportion of the monarchs at a site moved among (into and out of) monitored sites, both while the population size increased in October and November, and while the population appeared to exhibit an equilibrium winter maximum. The pattern of abundance of both tagged and untagged monarchs at monitored sites leads us to reject the closed population model and the accrual hypothesis. We found that monarchs at all three study sites are part of a larger superpopulation, though the sites do not contribute to the superpopulation equally. We determined that mark-resight is a viable alternative to existing population estimation techniques, though mark-resight methods would need to be explored further before being applied routinely. Our results suggest we need to move away from site-based management and manage instead for landscape-level overwintering (superpopulation) dynamics.

The fact that brands create trust and develop cognitive and emotional ties with customers are well recognized. However, this is primarily associated with B2C markets. More recent studies admit to the fact that despite the differences between B2C and B2B contexts brands can have valuable features in B2B as well as B2C. Purchases in a B2B context are a combination of decisions made by individuals where the decision can be affected by personal factors as well as cognitive and affective factors, although in an organizational environment. This study aimed to examine potential factors that can influence a buyer in a buying process within a B2B-context and was restricted to investigate products that the company does not use themselves and organizations based in Sweden. At the start of our research, we found that previous research within purchase decisions with emotions as a variable for the most part only focuses on B2C organizations or B2C relationships. This created an interest in for the authors if it is possible to investigate B2B in a similar way. The original research showed that one of the reasons for this could be that many previous researchers have rejected emotion as a variable to consider in B2B purchasing decisions due to the fact that B2B is often about companies acting on orders from higher-ups. An employee who makes purchasing decisions has therefore been put as a cog in the machine whose task has been to buy the highest quality at the lowest price possible. Therefore, it has been particularly interesting to respond to this norm in order to be able to determine whether it is true or not. After interviews with buyers from organizations in the Swedish markets, the authors have gained a clearer picture of what the reality of the matter actually is. For this study, a research model was developed based on recognized brand concepts and organizational buying behavior models. The model includes the underlying hypothesis that organizational buying behavior is influenced by brands and that dual processes play a decisive role in the individual's decision. The research is of a qualitative kind which, with the help of in-depth interviews, provides a deeper understanding of human behavior and factors to this behavior. The results show that organizational buying behavior has connections to the buyer's individual buying behavior, meaning that when the buyer lacks motivation, knowledge or interest in the product, the emotions are stronger and have a greater impact on the buying decision.

京都大学 / 新制・課程博士 / 博士(工学) / 甲第24217号 / 工博第5045号 / 新制||工||1788(附属図書館) / 京都大学大学院工学研究科都市社会工学専攻 / (主査)教授 山田 忠史, 教授 藤井 聡, 准教授 SCHMOECKER Jan-Dirk / 学位規則第4条第1項該当 / Doctor of Philosophy (Engineering) / Kyoto University / DFAM

This thesis studies the relationship between a skewed sex ratio and female empowerment in India. The study uses cross-sectional survey data from 2015-16, defining empowerment with an index that compiles questions directed toward women regarding if they have been subjected to violence and violations by their husbands or partners. We investigate if there is a negative relationship between sex ratio and the empowerment index by examining previous studies as well as conducting a multivariable regression analysis. The results show a statistically significant negative relationship at the 5% significance level when controlling for son preference, wealth index, education, habit of reading the news, and identification as Hindu and Muslim respectively. Furthermore, we find that a negative correlation persists when separately performing the regression for the wealth index levels “middle” and “richer”. Although statistically significant, the coefficients are relatively small and the economic significance of the results is hence debatable.

Developing robust behavioral assays to study olfactory-driven behaviors allows for greater insight into the neural mechanisms behind them. Oftentimes, olfactory behavioral assays require a two-choice design, consistent variables, and controlled stimulus application. This can be challenging when working with marine dwelling organisms such as nudibranchs. Extensive work shows the importance of olfaction in both pre-metamorphic larval development and adult stage nudibranchs (Gastropoda, Mollusca). However, there is little research investigating how olfaction plays a role in rapidly developing, post-metamorphic juvenile nudibranchs such as Berghia stephanieae. To study olfactory-associated behaviors in juvenile Berghia, a novel behavioral microfluidic chip was designed which met the requirements for a reliable olfaction assay. Baseline motor behaviors such as general locomotion, turns, and contractions were observed. Despite individuals being raised in the same cohort, animal-to-animal variability was found in relation to their baseline behaviors. Xylene cyanol, a commonly used dye in microfluidics, was found to be aversive at a range of concentrations (0.075% - 0.025%) causing the animal to tightly contract and turn away from the stimulus. Juveniles showed no significant behavioral response to a 0.00125% dilution which was necessary to confirm a constant flow in the microfluidic chip. Juveniles showed a strong preference towards fluid that had been conditioned with their preferred food source odor, the sea anemone Exaiptasia diaphana. This was judged to be an innate preference because it occurred upon the first exposure of these animals to the odor. Serial dilution of Exaiptasia conditioned seawater (ECS) uncovered a threshold for behavioral preference of 60%. In summary, the development of this behavioral provides an opportunity to present controlled olfactory stimuli while observing the juvenile’s behaviors. This will allow future experiments to examine the neural mechanisms behind both aversive and attractive stimuli and provides a method for testing olfactory learning and memory in this species.

This paper examines the relationship between a multi-attribute attitude model and residential preference as a step towards developing an attitudinal model of housing choice. The use of multi-attribute attitude models, similar to those employed in marketing research, is suggested as a viable means of measuring residential preference, on the basis of measures of individual affect. Conceptual and measurement problems with each component of the suggested model are discussed and two attitude models of residential preference are presented. These models are empirically tested in a pilot study which deals with the housing preferences of a sample of on campus residents at McMaster University. The relationship which is shown to exist between attitude and preference in the pilot study, supports proposals for recommending an attitude model approach to the analysis of housing choice, in a more intensive enquiry. / Thesis / Master of Arts (MA)

This revealed preference study estimates the implicit value associated with owning a home along a river and tree coverage of riparian areas along rivers. The setting of this study is Ashe and Watauga Counties in Northwestern North Carolina and the two rivers that flow through those counties: New River and Watauga River. House sales form the basis of the hedonic models used to value these environmental characteristics. Homes that border a river sell for at least $28,000 more than otherwise similar homes that do not border a river. Riparian area tree coverage positively impacts river-bordering house prices, but only to a certain point. The results of this study are important for environmental organizations in this region working to safeguard the New and Watauga Rivers through riparian buffer installation and protection. / Master of Science / This study describes homeowner values of owning a home near a river, along with values associated with tree coverage of riparian areas along rivers. The setting of this study is Ashe and Watauga Counties in Northwestern North Carolina and the two rivers that flow through those counties: New River and Watauga River. Using home sales data, models estimate the value of two environmental characteristics home properties. This research found that homes bordering a river sell for at least $28,000 more than otherwise similar homes that do not border a river. Having any amount of tree coverage up to 90% tree coverage in a riparian area increases home sale prices, therefore homeowners positively value tree coverage in riparian areas to a point. Tree coverage in riparian areas is beneficial for the protection of rivers and river-dependent wildlife. The results of this study are important for environmental organizations in this region working to safeguard the New and Watauga Rivers through riparian buffer installation and protection.

京都大学 / 新制・課程博士 / 博士(情報学) / 甲第24856号 / 情博第838号 / 新制||情||140(附属図書館) / 京都大学大学院情報学研究科知能情報学専攻 / (主査)教授 鹿島, 久嗣, 教授 河原, 達也, 教授 森本, 淳 / 学位規則第4条第1項該当 / Doctor of Informatics / Kyoto University / DFAM

This study was based on The Big Five theoretical framework with focus on the extraversion factor, and its purpose was to assess how we value introverted and extraverted personality traits. A hypothesis was that ratings of extraversion-related adjectives would be higher than ratings of introversion-related adjectives. Another hypothesis was established to test if the ratings would differ between genders. The study included sixty-three participants (Age M = 23, SD = 3,6; 37 females; 26 males) who rated adjective words related to personality traits on the spectrum of introversion and extraversion on a Likert scale from one through seven. Results showed that extraversion related adjectives were rated higher than introversion adjectives and in terms of gender, males did not differ in their ratings of introversion and extraversion adjectives, however, females rated extraversion higher than introversion. In addition to considering personality adjectives as positive or negative, participants also answered the 20-Item Mini IPIP personality test, to explore whether our preference can be associated with our own personality. Results showed that the ratings of extraverted personality adjectives had a significant positive correlation with the extraversion factor in the IPIP, and the ratings for introverted adjectives showed a negative correlation, however it did not remain significant after a Bonferroni correction.