Ichikawa, Japan

Chiba University of Commerce

www.cuc.ac.jp
Ichikawa, Japan

Chiba University of Commerce is a private university in Ichikawa, Chiba, Japan, established in 1950. The predecessor of the school was founded in 1928. Wikipedia.

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Ju M.,Seoul National University | Osako M.,Japan National Institute of Environmental Studies | Harashina S.,Chiba University of Commerce
Waste Management | Year: 2017

The food loss rate is a factor that represents food consumption efficiency. To improve food consumption efficiency, we need to fundamentally quantify food loss at national and global levels. This study examines food and food waste flow and calculates the food loss rate in the food supply chain by targeting Japan. We analyzed inedible food waste and avoidable food losses in wholesale, manufacturing, retail, food services, and households and considered different supply chain pathways, different food categories representing whole Japanese meals, and weight changes after cooking. The results are as follows: (1) Japan has an overall rate of avoidable food losses of approximately 15% for meals (excluding agricultural losses), (2) the supply sector with the highest food loss rate is food services, and (3) the food category with the highest food loss rate is vegetables. Finally, we proposed a model for calculating food loss rates that could be used for future analysis in Japan or other countries. © 2017 Elsevier Ltd.

Hashimoto T.,Chiba University of Commerce | Shirota Y.,Gakushuin University
Proceeding of 2012 International Conference on Uncertainty Reasoning and Knowledge Engineering, URKE 2012 | Year: 2012

The paper describes our web publication of visual teaching materials for business mathematics. The objective of the web site is to familiarize students with our visual approach for business mathematics at early stage. The significant advantage of visualization is that seeing the materials leads to better understanding of the mathematical process. Even if the students cannot understand the algebraic calculation process, they can intuitively understand the essence, only seeing the visual materials. The feature of our developed teaching materials is utilization of three-dimensional graphics and its animations. Just watching the animation, students can see the points, even if they have no idea about operations on the web. In the paper, we will illustrate the typical economics problem named the Marshallian demand function. © 2012 IEEE.

Minohara T.,Chiba University of Commerce
AIAA/IEEE Digital Avionics Systems Conference - Proceedings | Year: 2011

• Besides airplanes with new grass cockpit, airplane with old cockpits consists of numerical gages are also used. • The visual image with the map by the mobile tablet based on a GPS sensor will assist the pilot to rectify a geographical image. • The prospect of trajectory will assist the maneuver of the pilot, especially, at approaching and landing. • Remember that the mobile tablet does not connect to the flight control system directly and it gathers the realtime data from its gyro, acceleration sensor and GPS only. © 2011 IEEE.

Chakraborty B.,Iwate Prefectural University | Hashimoto T.,Chiba University of Commerce
2010 2nd International Symposium on Aware Computing, ISAC 2010 - Symposium Guide | Year: 2010

With the help of fast and cheap information technology GPS navigators for car navigation are becoming very common. But unlike vehicle users, pedestrians form a more heterogeneous group having different levels of physical abilities with varieties of conditions, personal preferences and needs. The lack of data to support pedestrian navigation also imposes a harder challenge to design generalized navigation system for pedestrians, specially elders and persons with disability. In this work a framework for an user aware pedestrian navigation system is designed in which a fuzzy set theory based algorithm is proposed to analyze the user's requirement from the linguistic expression within limited vocabulary and a genetic algorithm is proposed to generate multiple alternate near optimal routes according to user's need. The optimal route can be decided by user from the options by an interactive mode. A simple simulation experiment has been done to study the feasibility of the development of an user aware, flexible pedestrian navigation system. ©2010 IEEE.

Minohara T.,Chiba University of Commerce
AIAA/IEEE Digital Avionics Systems Conference - Proceedings | Year: 2010

Most advanced VTOL airplanes such as V-22, JSF-35, and AV-8 can change the directions of their propulsions from horizontal to vertical at landings, and also from vertical and horizontal after takeoffs. The maneuvers by a pilot of such a VTOL airplane at those changes seem to be difficult and rarely cause some accidents. The more prediction on the behaviors of the airplane including the trajectory and the attitude could be computed in real time and be displayed the result in the cockpit. This paper proposes a display system that displays the predictions on the behaviors with a virtual display on a personal computer. The graphic processors of embedding systems have become to have equivalent performance to the current personal computers. Therefore the prototype system proposed on this paper could be realized also in the most embedding systems using in the guidance. For the predictions, this system calculates a simple physical simulation and a simple hydrodynamic simulation. Comparing to the current situation where the avionics of the VTOL tells no prediction, the simple prediction computed by the guidance computer would much assist the pilot to make an instantaneous decision on the maneuver. © 2010 IEEE.

Hashimoto T.,Chiba University of Commerce | Chakraborty B.,Iwate Prefectural University | Shirota Y.,Gakushuin University
International Journal of Computational Science and Engineering | Year: 2012

Social media, which enable people to easily communicate and effectively share the information through the web, are rapidly spreading recently. In such media, effective topic extraction technique from messages has been significant so that trend topics and their reputation can be recognised. However, since messages contain redundancy and topic boundaries are ambiguous, it is difficult to extract appropriate topics. As the first step for topic extraction, this paper proposes an effective measure to automatic determination of appropriate number of topics based on the intra-cluster distance and the inter-cluster distance among topic clusters. We present our experimental results to show the effectiveness of our proposed approach. Copyright © 2012 Inderscience Enterprises Ltd.

Chakraborty B.,Iwate Prefectural University | Hashimoto T.,Chiba University of Commerce
Proceedings - 2010 IEEE 4th International Conference on Semantic Computing, ICSC 2010 | Year: 2010

Social computing services, which enable people to easily communicate and effectively share the information through the Web, are rapidly spreading recently. In such services, effective topic extraction technique from messages in social computing services has been significant so that trend topics and their reputation can be recognized. However, since messages contain redundancy and topic boundaries are ambiguous, it is difficult to extract appropriate topics. As a first step to extract topics, this paper proposes an effective method to automatic determination of appropriate number of topics based on the intra-cluster distance and the inter cluster - distance among topic clusters We present our experimental results to show the effectiveness of our proposed parameter. © 2010 IEEE.

Shirota Y.,Gakushuin University | Hashimoto T.,Chiba University of Commerce | Stanworth P.,University of Oxford
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2013

In solving word problems in mathematical economics, such as national income determination problems and various financial problems, two different knowledge bases are required: a database of math formulas and a database of economics theories. For this we have developed the knowledge bases, with which we offer our students an effective education support system for economics word math problems. Solving a word math problem is nothing more or less than conducting a process of deductive reasoning to find the unknown of the problem. To construct the deductive reasoning process is to collect missing pieces of information from the knowledge bases, to bridge between the given data and the unknown of the problem. To promote students' use of the formula and theory knowledge bases in our educational support system, we have visualized the reasoning processes as a solution plan graph and collected these charts to make a content center for teaching materials. The paper shows that a solution plan graph can play a role of a good user interface for accessing the knowledge bases. We illustrate a solution plan graph and its annotation technology for constructing the solution plan graph. © 2013 Springer-Verlag Berlin Heidelberg.

Oguri Y.,Chiba University of Commerce
20th ITS World Congress Tokyo 2013 | Year: 2013

This is an abstract of the paper of the title above to be presented at the 20-th ITS World Congress, Tokyo 2013. The full paper will be appearing in http://softcar.jp/.

Shirota Y.,Gakushuin University | Hashimoto T.,Chiba University of Commerce
Proceeding of 2012 International Conference on Uncertainty Reasoning and Knowledge Engineering, URKE 2012 | Year: 2012

When the student is not able to solve a given problem, a plausible deductive reasoning process should be offered to him/her. Our final goal is a development of an e-Learning system which could help students not too much and not too little so that they can acquire as much deductive experience of independent work as possible. In the paper, we illustrate a solution plan graph which is a plausible deductive reasoning material with a concrete word problem. Our guiding principle for conducting the deduction is the thinking method of working backwards from the unknown. The paper also illustrates the details of the working backwards method. © 2012 IEEE.