As the number of users grows, more and more companies and brands use Facebook to shape their own images. What they want is ¡§Word of Mouth (WOM). However, each user has his/her own characteristics, and it might affect the WOM activities on Facebook. This research try to (1) explore the traits of WOM on Facebook, (2) find users¡¦ motivations of WOM behaviors on Facebook, (3) figure out what kind of characteristics might influence the WOM activities on Facebook, and (4) find some situational factors that have impacts on WOM activities on Facebook. The results show that (1) users who have high needs of uniqueness likes to share WOM to out-group members, (2) users prefer to share non-business messages and the messages which are related to their own benefits, (3) users with different characteristics have different motivations of WOM activities on Facebook. Keywords: Word of Mouth, Facebook, Characteristics, Situational Factors, Focus-group Interview, On-line Survey, social network site.

This master´s thesis deals with the marketing survey for industry of solar energy, there is the main goal to speak potential customers and determine their needs, opinion and existing barriers to investment in the sector. The work contains a complete evaluation questionnaire action and proposals for improving existing companies within this sector. The result of the questionnaire are the opinions of respondents to reveal additional problems of solar energy.

京都大学 / 新制・課程博士 / 博士(情報学) / 甲第24821号 / 情博第837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 熊田 孝恒, 教授 西田 眞也, 教授 内田 由紀子, 准教授 中島 亮一 / 学位規則第4条第1項該当 / Doctor of Informatics / Kyoto University / DFAM

The identity of Latin America is composed of elements inherited from Europe, Asia and Africa. This identity has been defined with a series of images, roles, behaviors and rules created to maintain a particular unification among the citizens of these societies. Cultural ideologies involving marriage, separation and divorce have been subjected to historical changes. Divorce in Latin America typically has had a negative connotation and communities have considered divorced women as outcasts. The purpose of this study is to examine Puerto Rican and Dominican women's perception of divorce with particular emphasis on divorced women's image and experience in these countries. There are similarities and differences between the two countries based on geographical, cultural, historical, economic and legal issues. Due to the cultural presence of the United States in Puerto Rico, many issues now separate the two countries. I consider this "duality" (Traditional/Latin American and Westernized/American) to be an interesting context for exploration particularly as it relates to women's perception of divorce. / Master of Arts

Determining the cosmic star formation history of the Universe is fundamental for our understanding of galaxy formation and evolution. While surveys now suggest that the "epoch" of galaxy formation occurred more than 6 billion years ago, our measurements still suff er from signi ficant scatter and uncertainties due to the use of diff erent indicators, dust extinction and the e ffects of cosmic variance in the current samples. Furthermore, understanding galaxy formation and evolution require us to go much beyond simply determining the star formation history of the Universe with high accuracy: what are the physical mechanisms driving the strong evolution that we observe? How does star formation depend on stellar mass and environment and how does that change with cosmic time? This thesis presents both a completely self-consistent determination of the star formation history of the Universe (based on a single, sensitive and well-calibrated star formation indicator up to redshift z ~ 2:3: the H α luminosity) and investigates its drivers by exploring large area surveys (probing a range of environments and overcoming cosmic variance) obtained with the High-redshift Emission Line Survey (HiZELS). HiZELS is a panoramic extragalactic survey using the WFCAM instrument on the 3.8-m UK Infrared Telescope (UKIRT) which utilizes a set of existing and custom-made narrow-band filters in the J, H and K bands to detect emission line galaxies (main targets are H α emitters at z = 0:84, z = 1:47 and z = 2:23) up to z ~ 9 over square degree areas of extragalactic sky. Detailed measurements of the H α luminosity function and its evolution with redshift are presented, revealing a signi ficant luminosity evolution. The clustering properties of H α emitters at high-redshift are quantifi ed and investigated for the first time, revealing that these distant galaxies reside in Milky-Way type dark matter haloes at z ~ 1. Mass and environment are found to have important and inter-dependent roles on star formation at high-z and the results are able to reconcile previously contradictory results in the literature. Furthermore, by conducting a novel double-narrow band survey at z = 1:47, the relationship between the [Oii]3727 and H α emission lines is studied in detail and directly compared to z ~ 0, showing no signifi cant evolution in the dust properties of star-forming galaxies, despite the very strong luminosity evolution. Finally, this thesis also presents the widest search for very distant Ly α emitters at z ~ 9.

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