This research aims to build a system that estimates assessment expressions to others by machine learning, collects them in real time, and feeds them back to the participants, and this study proposes two techniques that are necessary for this purpose. First, we propose a method to estimate the evaluative behavior to others, which is simplified to positive, negative, and neutral, from the facial images and head acceleration of participants in the conversation. The supervised machine learning algorithm requires ground-truth labeling. To analyze the expression of a large number of people, such as in a classroom, ground-truth labeling becomes a challenge in analysis and system construction. Second, to ease the labeling process we propose and implement a method to recommend the estimated labels on the labeling software. The accuracy of the proposed method is approximately 0.45 in F-value. Considering the time-series information, the proposed method recognizes major changes in positive evaluation behaviors. Presenting recommended labels on our labeling support system increase with time for the ground-truth labeling. However, the accuracy of labeling positive assessments improve in five out of six subjects.

This paper describes a conversational holographic agent to help learners assess and manage their participation in order to encourage co-regulation in a face-to-face discussion. The agent works with a voice aggregation system which calculates each participant's utterances, silence ratio, ratio of participation, and turn-taking during the discussion in real-time, and produces prompting utterances and non-verbal actions to encourage learners' participation, summarization, and clarification of what they say. During discussions with each other, learner follow the prompts, and might model how the agent regulates the participation.

This preliminary research investigates the effects of self-regulated learning support using the system "Self-regulator (SR)," and relationships between self-regulated learning awareness, learning behaviors, and perceived effects of SR. The results showed that the course with SR promoted "meet the deadline" awareness. The results of Spearman's correlation analysis revealed that procrastination awareness for high performance is one of the key factors for time management, which is an important factor of self-regulated learning.

Ninja Code Village is a comprehensive learning-support environment for the Scratch, visual programming language. It provides more than 60 sample functions that are commonly used in Scratch projects, and analyses automatically which functions are used in a project in order to foster students' competencies in abstraction, modelling, and decomposition. It also provides automatic assessment of computational thinking concepts such as conditional statements, loops, data, and parallelism in order to develop students' programming skills.

To support astronomy education, we developed a tangible learning environment called the tangible earth system. To clarify its problems, we defined an assessment framework from the aspects of curriculum guidelines, design guidelines of tangible learning environments, and epistemology of agency. Based on the analysis of our small-scale user study, we identified problems of the system in terms of location, dynamics, and correspondence parameters.

In spread spectrum fingerprinting, it has been considered that the strength of the embedded signal is reduced to 1/cof its original value whenccopies are averaged by colluders. In this study, we analyze the model of the averaging attack by considering quantization that causes nonlinear changes in the fingerprint sequence. Our detailed analysis reveals that the attenuation of the signal energy strongly depends on the quantization performed during the embedding and averaging stages. We estimate the actual attenuation factor from the perspective of a stochastic model in the spatial domain and derive an attenuation factor that differs considerably from the conventional one. Our simulation result indicates that the actual attenuation factor is classified into the best and worst cases from the detector's perspective. Furthermore, we demonstrate that colluders can select the worst case by comparing their fingerprinted copies. A countermeasure for preventing the worst-case scenario is also proposed in this paper.

This paper proposes real-time interactive systems illustrating your shadows cast on the floor, which we name "graphic shadow." They will make you experience an exciting space of interaction performing an illusion on your own shadows.

We demonstrate a real-time interactive system illuminating your shadows cast on the floor. A user occluding the projector light may create undesirable shadow in front-projector-based systems. We overcome and turn this problem to our advantage with an elaborately designed optics including multi-projection techniques. The systems will make you experience an exciting space of interaction performing an illusion on your shadow.

A software named CIAO (Collaborative Implement for Active Observation) was developed to support learning through active observation of video materials. Its functions include capability of playing multi-angle movies synchronously with protocol text and random access to a specific scene designated by clicking on the corresponding part of the protocol text. Focusing on counsellor education through a small group discussion, the authors have been developing a learning material dealing with a realistic case of counselling interview session aiming to improve interview skills through intensive observations and discussions.

This paper describes an analysis of children's Web browsing behavior during information communication technology (ICT) classes at an elementary school. Children's page viewing times for Web pages were specifically analysed. Results revealed that younger children viewed pages for significantly shorter periods of time when compared to older children. Based upon our observations we believe that these differences are attributable to the child's reading ability. These findings suggest that for younger students teachers should assess a web site's suitability by taking factors such as the child's educational stage of development and reading skill into account.

This paper describes teachers' recognition about children's trouble and children recognition about trouble in the class of information education. We found that teachers tend to recognize that children's trouble is about the computer system and function or process of using the software, on the other hand, children tend to recognize that it is the situation that they are stopped by something during their work. We also found children become aware of the trouble only of the present. Teachers should pay attention to a child's stages of development, and suggest the way to find the meta-recognition which children fall short of in the future.

In this paper, we focus on the relationship between learners' activity/attitude in face-to-face communication (FTF) and that in computer-mediated communication (CMC) using distributed computer supported collaborative learning (dCSCL). In general, even if dCSCL is applied in class, university students learn together by FTF while on campus. This study aims to reveal correlative factors in FTF which promote learners' participation in dCSCL. We approach a university class where students are instructed to use mailing-lists for distributed group activities. We analyze their behavior by studying mailing-lists content and through questionnaires. Results show that personal attitudes in both FTF and dCSCL discussions are related. Furthermore, we reveal that learners' understanding of the content and process of FTF encourages their participation in dCSCL. In conclusion, when dCSCL is introduced in a traditional classroom, learners' active participation in dCSCL is prompted by creating a connection between FTF and dCSCL by supporting FTF discussions.

In this paper, the authors describe the development of a Web bulletin board system and its implementation and evaluation in school mathematics classes. In their dynamic studies of Web-collaborative learning during the past few years, they have found that problems with such computerized systems lie in their inability to show how notes relate to each other through links. To solve this problem, they developed a Web bulletin board system enhanced by a knowledge map. The system is called NakSun. Using NakSun, learners can determine the coordinates, or location, of a node that has been entered. They can also link notes together using the system in real time. NakSun was implemented in mathematics classes in a few junior high schools in Japan on three separate occasions. Their results found that the use of the knowledge map was a comparatively effective tool to facilitate collaborative learning. Furthermore, their results also indicate that it is essential for students to obtain sufficient experience in using the system. An interesting finding was that displaying all notes in a sequential order was also essential for learners, as it enabled them to take a glance at many ideas and views at one time.

The trend in telecommunication services management is to focus more on managing the services to better meet customer demands at the management layer closer to customers. For example, in customer-contact-work, the aim is to more efficiently provide a higher level of service to customers. We have been developing an operation flow and process management system (OFMS) that meets these requirements. It treats staff members, work groups, and tasks as managed objects (MOs), and by mapping the actual work situation to the relationship between MOs, it can better manage the structure of business processes and the task-load distribution. It can also use the information from these MOs to manage the resources available for providing services. In this report we describe the framework for managing business processes in the OFMS and the OFMS implementation using distributed objects based on CORBA V2.0. We also describe a trial application of the OFMS to handling work at a call center and quantitatively assess its benefits.