Tangled String for Multi-Scale Explanation of Contextual Shifts in Stock Market

The original research question here is given by marketers in general, i.e., how to explain the changes in the desired timescale of the market. Tangled String, a sequence visualization tool based on the metaphor where contexts in a sequence are compared to tangled pills in a string, is here extended and diverted to detecting stocks that trigger changes in the market and to explaining the scenario of contextual shifts in the market. Here, the sequential data on the stocks of top 10 weekly increase rates in the First Section of the Tokyo Stock Exchange for 12 years are visualized by Tangled String. The changing in the prices of stocks is a mixture of various timescales and can be explained in the time-scale set as desired by using TS. Also, it is found that the change points found by TS coincided by high precision with the real changes in each stock price. As TS has been created from the data-driven innovation platform called Innovators Marketplace on Data Jackets and is extended to satisfy data users, this paper is as evidence of the contribution of the market of data to data-driven innovations.Comment: 16 pages and 7 figures. The author started to write this paper as an extension of the paper [20] in the reference list, but the content came to be changed substantially, not by only minor extension but to a new pape

行列技術を用いた動的ネットワーク可視化

学位の種別: 課程博士審査委員会委員 : （主査）東京大学教授 大澤 幸生, 東京大学教授 青山 和浩, 東京大学教授 和泉 潔, 東京大学准教授 森 純一郎, 首都大学東京教授 高間 康史University of Tokyo(東京大学

The impact of a group-based acceptance and commitment therapy intervention on parents of children diagnosed with an autism spectrum disorder

Parents of children diagnosed with an autism spectrum disorder face significant stressors and challenges; however, little research has investigated ways to effectively address their psychological distress and adjustment issues. This study used a between-subject and withinsubject repeated measures design to test the effects of an 8-week Acceptance and Commitment Therapy (ACT) or treatment as usual (TAU) group. Treatment completers included 13 mothers in the ACT condition and 4 mothers in TAU. They were assessed three weeks before the intervention, one week after, and three months post-intervention. Limited data for between-group comparison demonstrated only a significant difference on the frequency scale of the Automatic Thoughts Questionnaire (ATQ), in which frequency of automatic thoughts increased for mothers in the TAU condition. For mothers in the ACT condition only, repeated measures ANOVAs revealed significant decreases from baseline to post-intervention on the Parental Distress Index of the Parental Stress Index-Short Form. Baseline to post-intervention decreases were seen for the GSI of the Brief Symptom Inventory-18 (BSI-18), with some regression to baseline at follow-up but overall reductions maintained. Similar significant findings were also demonstrated with increases in the Positive Aspects of Caregiving and decreases in the ATQ total score and the believability scale. No statistically significant changes were seen on the Depression Index of BSI-18, the Acceptance and Action Questionnaire II, or the Five Facets of Mindfulness Questionnaire. In exploratory analysis, experiential avoidance correlated positively with multiple scales of a selfadministered measure of executive functioning, including a measure of one’s ability to shift attention rapidly. Additionally, mothers who reported significantly greater levels of externalizing problem behaviors also reported significantly higher degrees of parental distress. This research suggests that an ACT-based treatment delivered in group format may be of assistance in helping parents better adjust to the difficulties in raising children with autism

Weathering weather: an embodied co-speculative approach to exploring weather

Weathering Weather is an explorative study that looks at unveiling what is obscured when using numeric weather data in our everyday lives. It does this by breaking down our understanding of weather, while simultaneously bringing attention to how we’re all weathering - enduring, living, and changing with weather. This thesis unpacks the many relationships we have with weather, climate, and climate change. It proposes alternative ways in which we may understand, relate to, and communicate weather in our everyday lives. While the politics of weather are examined through a critical lens, an exploratory approach is used to understand how the qualitative aspects of weather might be mapped. Embodied co-speculation, a methodology that uses practices from embodied design, participatory design, and speculative design, is employed to capture the subjective embodied knowledge about weather that we inherently possess. Co-speculation is used to find alternative ways of measuring and communicating weather (alternative to numeric ways). This creative outlook towards weather allowed for estrangement and imagination to emerge, which created room for reflection about our relationship with weather and climate change. Three co-speculation workshops reveal how feelings, rhythms, moods, observations, and senses are deeply impacted by weather and obscured when we condense weather into numeric meteorological data. The workshops documented the subjective weather experiences, which were thematically analysed. The alternatives were filtered to create themes that collate how weather can be understood through natural and urban environments, language, celebrations, memories, safety, productivity, privilege, mixed feelings, moods, mental health, seasonality, and temporality. Rich, personal, physical materials collected from the co-speculation workshops were documented in the form of a zine (an independent publication that is made for a large but niche audience interested in the topic), titled ‘Deep talk about Weather’ which was co-authored and co-created with two participants, acts as the tangible outcome of this thesis. In proposing reflective, qualitative, and embodied alternative ways of understanding weather, this thesis offers different perspectives through which we can understand and reflect on complex eco-social subjectivities related to weather and climate change.Media files notes: Deep talk about Weather Description: A zine that documents subjective, embodied experiences of weather and climate change and challenges and proposes alternative ways of communicating and measuring weather (alternative to numeric weather data) Media creators: - Media rights: CC-BY-NC-ND 4.

データ市場における知識構造化に基づくデータ利活用シナリオ検討プロセスの研究

学位の種別: 課程博士審査委員会委員 : （主査）東京大学教授 大澤 幸生, 国立情報学研究所教授 山田 誠二, 千葉大学教授 阿部 明典, 東京大学教授 古田 一雄, 東京大学教授 和泉 潔, 東京大学准教授 小林 肇University of Tokyo(東京大学

Chilean muckrakers: Making investigative journalism in a post-authoritarian and neoliberal context

This research examines investigative journalism performed in a post-authoritarian period, under a neoliberal society, in the Global South, and it traces some changes over 25 years. In particular, the dissertation characterizes muckraking as a sub-field of the journalistic field, discusses its boundaries, as well as its main players and their agendas when producing investigative journalism. The study weighs the influence of political and economic elements in shaping investigative reporting. The first part of this dissertation examines the boundaries promoting and, at the same time, constraining investigative journalism. Indeed, it shows the specific historical roots of current basic principles organizing, fostering, or hindering an adversarial journalistic performance by analyzing the constitutional foundations of freedom of expression, a negative freedom approach, and the legal status of media. The research also shows the main features of the subfield through its mechanisms of recognition and the capital appreciated and mobilized by its players, both organizations and individuals. Through analyzing the performance of muckraking on television since the 1990s and through the mid-2010s, this research critically reviews rationality as the core principle of public service’s journalism. In doing so, I introduce nuances to better understand watchdog-style journalism when intertwined with visual languages in a Latin American journalistic culture. The research design mixes different methodological techniques (like interviews, archival work, and analysis of agenda) and material (such as administrative records, visual material, and datasets specially designed and collected for the purposes of this research)

Moving Images: Mediating Migration as Crisis

In recent years, spectacular images of ruined boats, makeshift border camps, and beaches littered with life vests have done much to consolidate the politics of movement in Europe. Indeed, the mediation of migration as a crisis has worked to shore up various forms of militarized surveillance, humanitarian response, legislative action, and affective investment. Bridging academic inquiry and artistic and activist practice, the essays, documents, and artworks gathered in Moving Images interrogate the mediation of migration and refugeeism in the contemporary European conjuncture, asking how images, discourses, and data are involved in shaping the visions and experience of migration in increasingly global contexts

THE IMPACT OF SUBSTANCE ABUSE IN HIGH RISK, RURAL VIRGINIA COUNTIES

The purpose of this study was to examine the relationship between drug-related crimes in high-risk, rural Virginia counties (Brunswick County and Grayson County) and efforts to reduce them with a particular focus on a cost-benefit analysis of expenditures. Four independent variables were assessed in relation to drug-related crime: expenditures associated with (1) drug abuse prevention and (2) drug abuse treatment, (3) economic development, and (4) education. Drug abuse prevention and drug abuse treatment are traditional approaches to address the drug use and crime relationship, while economic development and education represent social determinants of health (economic and social factors that impact the health of people in communities). The literature suggests that strategies that build on traditional approaches to reduce substance use and addiction, while simultaneously addressing social determinants of health, are most effective at mitigating the drug use/crime relationship. The following demographic variables were also analyzed: unemployment rates, educational achievement, homeownership rates, median household income, and poverty rates. The theoretical framework used in this research was Paul Goldstein’s tripartite framework for explaining the drug use/violent crime relationship (psychopharmacological violence, economic compulsive violence, and systemic violence). Exploratory, descriptive and explanatory research designs were employed for examining the relationship between drug-related crimes and amelioration efforts in the areas of drug abuse prevention/treatment, economic development, and education. The research used a variety of secondary data amassed by local, state and federal governments, including basic demographic information, homeownership rates, median household income, poverty rates, and unemployment stastics. For example, audit documents from both Brunswick County and Grayson County, and the Virginia Tobacco and Indemnification and Community Revitalization Commission (VTICRC) were utilized to determine expenditures for the dependent and independent variables. The data collected from the secondary sources were reviewed and analyzed. The researcher found that drug abuse prevention was inversely correlated with drug-related crime expenditures and drug-related crimes for juveniles. In other words, drug abuse prevention expenditures predicted reductions in drug-related crime expenditures and drug-related crimes for juveniles. The researcher recommends that policymakers reprioritize limited funding to ensure maximum impact of reducing drug-related crimes and its consequences through drug abuse prevention policies and increased funding allocations