Kochi University of Technology Academic Resource Repository

石井, 和磨

Japanese

ベルトを用いた全方向搬送装置の開発

加藤, 草太

アクティブリンクを有する菱形車輪配置惑星探査車両の検討

行德, 一真

パンタグラフの騒音低減に向けたキャビティ騒音の確率的ノイズ生成法に基づく騒音解析

宮本, 崇功

組込み CPU に搭載するリアルタイム音声加工システムの構築

Paul, Daniels

渡部, 伸一

English and Career Planning: A Case for Students in the School of Environmental Science and Engineering

高知工科大学博士（学術）thesi

Mostafa, Elsayed Ahmed Mohamed Shahen

－1－ 
 
論 文 内 容 の 要 旨 
 
 
With the growing threats of abrupt and irreversible change in Earth’s atmosphere, stability and sustainability 
become two essential elements for the existent and continuation of human life on planet Earth. Simultaneously, 
humans are pursuing happiness as the ultimate goal of their lives, leading them to focus on the short term 
benefits without considering the long term harm caused to the Earth. Thus, the way individuals pursue 
happiness and behave in this situation should be explored to understand the relationship between happiness 
and the concern for the future and to suggest the appropriate mechanism or institution for considering future 
generations. To this purpose, this thesis applies survey and laboratory experiment and collect secondary data 
to examine the subjective happiness’s determinants at the individual level, study the individual behavior in 
intergenerational sustainability dilemma situations, and find out the factors affecting the stability of public 
health provision as a significant determinant for the wellbeing of the society. 
Our research starts with examining the relationships among happiness, the concern for the future generations 
i.e., generativity and social preferences, along with sociodemographic factors, within a single analytical 
framework. We hypothesize that generativity and social preferences are the determinants of happiness, posing 
a research question “Are people happier by being prosocial and/or generative for sustainability?” We conduct 
a survey experiment, collecting data from five subjective happiness scales, generativity, social value 
orientation and sociodemographic variables in one urban area (Dhaka) and two rural areas (Bogra and 
Gaibandha) in Bangladesh. With the data, we empirically characterize determinants of subjective happiness, 
focusing on generativity and social value orientation, controlling for sociodemographic factors. The statistical 
analysis consistently shows a positive association between subjective happiness and generativity, irrespective 
of the type of happiness scale, while social value orientation does not exhibit any significance. Rural residents 
have lower peer relative happiness than urban residents, and household income has a positive relationship 
with general subjective happiness, leading each of these factors to be significant in overall subjective 
happiness. In summary, generativity, income and residence area are main determinants of happiness, implying 
that further urbanization, which is expected to occur in the future, will positively affect people’s happiness if it 
can bring about an increase in generativity. These results also suggest a possibility that people are happier by 
being more generative for sustainability, and some new institutional frameworks such as future design shall be 
recommended to enhance generativity. 
－2－ 
In the second study, we examine the individual behaviors in the intergenerational sustainability dilemma 
(ISD), which is a situation of whether or not a person sacrifices her benefits for future sustainability. A 
one-person ISD game (ISDG) is instituted with a strategy method where individual’s queue is organized as a 
generational sequence to examine individual behaviors. In ISDG, each individual chooses an unsustainable (or 
sustainable) option with her payoff of X (X − D) and an irreversible cost of D (zero cost) to future generations 
in 36 situations. Future ahead and back (FAB) mechanism is suggested as a resolution for ISD by taking the 
perspective of future generation whereby each individual is first asked to take the next generation’s standpoint 
and request what she wants the current generation to choose, and, second, to make the actual decision from the 
original position. Results show that individuals choose the unsustainable option as previous generations do so 
or X/D is low (i.e., sustainability is endangered). However, FAB prevents individuals from choosing the 
unsustainable option in such endangered situations. Overall, the results suggest that some new institutions, 
such as FAB mechanisms, which induce people to take future generations’ perspective, may be necessary to 
avoid intergenerational unsustainability, especially when intergenerational sustainability is highly endangered. 
In the third study, we study the determinant of the public health allocation’s stability, which affects the quality 
of health service provided to the people in a society. However, little is known about the determinants of the 
public health allocation’s fluctuations. Thus, this paper studies the determinants of sudden and big changes in 
the public health allocation (i.e., punctuation). We collect data from various sources such as the World Health 
Organization, The World Bank about the changes in the public health expenditure, governance indicators and 
the occurrence of natural and health disasters in 191 countries over the period from 1995 to 2015. Our results 
show that the least developed countries are more likely to face punctuation in the public health allocations than 
developed countries. We also find that countries with low governance indicators encounter more punctuations 
than countries with high governance index. Our findings suggest that instability in public health allocations 
could be resolved through providing international aids to the least developed and developing countries by 
international organizations, which can be granted based on each country’s governance ranking. 
 
 


English

Economic analysis of individual behavior and governance for stability and sustainability

JIANG, Xinhui

 
- 1 - 
 
氏 名（本籍） JIANG Xinhui（中華人民共和国） 
学位の種類   博士（学術） 
学位記番号   甲第 372 号 
学位授与年月日 令和３年３月 18日 
学位授与の要件 学位規則第４条第１項 
研究科・専攻名 工学研究科・基盤工学専攻 
学位論文題目  A Study of Eye and Finger Behaviors for Text Input in Mobile Interfaces 
（モバイルインタフェースにおけるテキスト入力のための目と指の操作特性に関
する研究） 
論文審査    （主査）高知工科大学  教授     任 向実 
高知工科大学  准教授    栗原 徹 
高知工科大学  准教授     星野 孝総 
高知工科大学  准教授    高田 喜朗 
高知工科大学  教授     吉田 真一 
 
 
審 査 結 果 の 要 旨 
 
１.論文の評価 
The candidate did original scientific research with a novel perspective. Her dissertation 
addressed overlooked problems in an active field of research, including a comprehensive review of 
the state of the art, discussed the problem in four different aspects with well-designed empirical 
studies, and suggested potential future work. 
 
Overall, the candidate’s PhD work has a high impact on academia and industry. The dissertation  
(i)  addresses problems in current research on mobile user interface design; 
(ii)  proposes a new method for capturing human attention and motor control during the 
interaction with mobile touchscreen devices, and implements the method based on different device 
setups; 
(iii) conducted empirical research studies from different perspectives of text input, including basic 
pointing operations, the strategies users adopted in daily typing, challenges and behavior 
adaptations in the learning process over new keyboard layouts, and the features of typists with high 
performance; 
(iv) contributes to the field of mobile text input by providing a detailed original dataset of typing 
behavior, advice for strategies in mobile typing, and guidelines facilitating better learning and user 
interface design; 
(v) benefits future research studies of human behavior modeling which further contribute to the 
development of future user interfaces with the consideration of holistic human properties including 
attention and motor control. 
 
- 2 - 
２.審査の経過と結果 
（１）令和３年１月６日 ５名の審査委員のもと協議され、博士後期課程委員会で学位論文の受理
を決定した。 
（２）令和３年２月９日 公開論文審査発表会及び最終試験を実施した。 
（３）令和３年３月１日 博士後期課程委員会で学位授与を可とし、教育研究審議会で承認された。 


A Study of Eye and Finger Behaviors for Text Input in Mobile Interfaces

LI, Yang

 
- 1 - 
 
氏 名（本籍） LI Yang（中華人民共和国） 
学位の種類   博士（学術） 
学位記番号   甲第 373 号 
学位授与年月日 令和３年３月 18日 
学位授与の要件 学位規則第４条第１項 
研究科・専攻名 工学研究科・基盤工学専攻 
学位論文題目  Designing Text Revision Strategies in Advanced User Interfaces 
（先進的なユーザインタフェースでのテキスト修正技法のデザイン） 
論文審査    （主査）高知工科大学  教授    任 向実 
高知工科大学  准教授   高田 喜朗 
高知工科大学  准教授   星野 孝総 
高知工科大学  教授    吉田 真一 
高知工科大学  准教授   栗原 徹 
 
 
審 査 結 果 の 要 旨 
 
１.論文の評価 
The candidate performed original, interesting, and top-tier scientific research in the field of text 
revision in the HCI community. In detail, this candidate conducted a systematic and thorough 
literature review on current text-entry research and identified the gap (the lack of considerations of 
text revision) that prevents novel typing methods from finding practical use. Facing different 
devices and scenarios, this candidate proposed a novel text revision paradigm for smartphone text 
revision and design space to further explore text revision techniques in virtual reality scenarios. 
Meanwhile, the candidate also proposed an interesting interaction method (based on the daily-life 
sewing metaphor) to enhance the performance of VR target acquisition and implemented a VR 
typing method to improve the efficiency and engagement of text entry in Virtual Reality (VR) 
applications.  
Research conducted by the candidate not only contributes to the HCI community with theoretical 
paradigms and procedure designs, it also provides feasible and promising solutions to enhance 
users’ text revision performance and experience on different devices and platforms. During his 
presentation, he also demonstrated his great passion for HCI research, mature research skills, 
fluent and concise oral communication capability, and resourcefulness and flexibility when 
answering questions from committee members.  
 
 
２.審査の経過と結果 
（１）令和３年１月６日 ５名の審査委員のもと協議され、博士後期課程委員会で学位論文の受理
を決定した。 
（２）令和３年２月９日 公開論文審査発表会及び最終試験を実施した。 
（３）令和３年３月１日 博士後期課程委員会で学位授与を可とし、教育研究審議会で承認された。 


Designing Text Revision Strategies in Advanced User Interfaces

上田, 史織

単結晶シリコン製造装置における運動モデルを用いた晶癖線の検出

小寺, 祐生

臨床実習支援を目的としたセンサーデータに基づくスキルの特徴分析

Kochi University of Technology

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