-
Use of FreeCAD and Mach3
Tadao Kaneko, Hiroshi Kashimoto
2011Volume 30 Pages
1-6
Published: March 16, 2012
Released on J-STAGE: March 04, 2022
RESEARCH REPORT / TECHNICAL REPORT
OPEN ACCESS
3D-CAD education has been offered since 2006 in the department of mechanical engineering at Gunma College of Technology, and within 2012, a five-axis controlled machining center will be introduced for student education. So, it is needed further to develop the comprehensive practices in CAD/CAM education.
We have supposed that both FreeCAD (PC-based free 3D-CAD software) and Mach3 (PC-based CNC machine control software) would help students to understand CAD/CAM technologies with a review of mathematical topics and machine control. In this report, we discuss the applicability of these application programs. FreeCAD is a general purpose CAD software easy to access from Python built-in interpreter, while, Mach3 is a CNC software that communicates motion control signals through a printer port, and also has a built in scripting engine. Then, we prepared many script programs which are used for 3D modeling, machine operation, custom M-code creation, and tool path generation, as exercises in CAD/CAM education.
View full abstract
-
Fumihito Sakurai
2011Volume 30 Pages
7-14
Published: March 16, 2012
Released on J-STAGE: March 04, 2022
RESEARCH REPORT / TECHNICAL REPORT
OPEN ACCESS
The nipple used to cool the mold-die has broken frequently when moving the mold-die. It is not easy to remove the nipple of the conventional type which has broken, so that the demand of the nipples with hexagonal bore is high. Furthermore, stainless steel nipples were desired in the durability and the health side. However, stainless steel nipple, it cannot broach, hexagon indentation is processed by the dice. By semi-dry process is more ecological than the usual wet processing, was able to extend tool life.
View full abstract
-
Fumihito Sakurai, Daisuke Kadokura, Daichi Tajima
2011Volume 30 Pages
15-25
Published: March 16, 2012
Released on J-STAGE: March 04, 2022
RESEARCH REPORT / TECHNICAL REPORT
OPEN ACCESS
Usually, a system is gradually built by repetition of the correction based on the designer's capability and improvement. This system improvement method called a PDCA cycle is used for the problem of not only systems development but the world. In this paper, we examined the possibility of taking in a PDCA cycle in a curriculum. The possibility of curriculum construction has been checked. However, the appraisal method of capability and the effective relationship with other practical curriculum will pose a problem.
View full abstract
-
Masashi Kurose, Reiko Nagasaka, Kazuo Ogino
2011Volume 30 Pages
27-31
Published: March 16, 2012
Released on J-STAGE: March 04, 2022
RESEARCH REPORT / TECHNICAL REPORT
OPEN ACCESS
Gunma national college of technology designated on a project to the cultivation of practical engineers by cooperative education. Our project aims at accomplishing "education program development and practice for cultivating future multi engineering", by mechanical engineering and biological engineering departments. This paper reports as follows. (1) Outline of this project (2)Physics experiment education in order to begin biochemical hands-on training . (3) Results by fish growth promotion.
View full abstract
-
Tatsuya Arakawa
2011Volume 30 Pages
33-38
Published: March 16, 2012
Released on J-STAGE: March 04, 2022
RESEARCH REPORT / TECHNICAL REPORT
OPEN ACCESS
We apply AHP to decision makings in text-based communications. We compose some extended versions of the simple model of communications we saw in the previous paper and see whether the results of AHP are as expected.
View full abstract
-
Tatsuya Arakawa
2011Volume 30 Pages
39-44
Published: March 16, 2012
Released on J-STAGE: March 04, 2022
RESEARCH REPORT / TECHNICAL REPORT
OPEN ACCESS
We compose an extended (3 Players) version of one of the models of Yamanotesen-Game we studied in the previous paper. We observe behaviors of this model in some simple cases.
View full abstract
-
Masaie Fujino
2011Volume 30 Pages
45-47
Published: March 16, 2012
Released on J-STAGE: March 04, 2022
RESEARCH REPORT / TECHNICAL REPORT
OPEN ACCESS
We developed a new structure for dye-sensitized solar cells (DSCs) composed of carbon cathodes and titanium substrates used for TiO
2 electrodes. Two types of carbon electrodes such as a carbon plate open with multi holes and a carbon fiber array were prepared for the cathodes. Light was arranged to go through the holes or slits to reach TiO
2 layer. It was shown by simulation that conversion efficiency could exceed 3–4% in each type of the cell, which suggests these carbon materials might be promising alternatives to platinum used for the cathode.
View full abstract
-
Nobuyuki Taira
2011Volume 30 Pages
49-51
Published: March 16, 2012
Released on J-STAGE: March 04, 2022
RESEARCH REPORT / TECHNICAL REPORT
OPEN ACCESS
The author reports two trials of engineering design education featured inorganic materials. The first theme is the preparation of Sn-Bi-Zn alloy. This alloy is a candidate as a Pb-free solder. The students have to aim the lowest melting point for this solder. Photocell is the second theme. The students have to achieve the photovoltage above 100 mV using copper and copper (I) oxide.
View full abstract
-
Nobuyuki Taira, Kayoko Ohno, Kazuo Ogino, Yukari Tabei
2011Volume 30 Pages
53-56
Published: March 16, 2012
Released on J-STAGE: March 04, 2022
RESEARCH REPORT / TECHNICAL REPORT
OPEN ACCESS
The authors report how experimental-type lectures for the local community are carried out in Gunma National College of Technology. While ordinary lectures for the local community have been held since 2002, we started the experimental-type lectures in 2004. In this paper, experimental-type lectures using magnets for elementary schoolchildren are reported. A so-called neodymium magnet, which is one of rare-earth magnets, is the strongest one among permanent magnets. With the neodymium magnet, mysterious experiments can be held. Moreover, the scientific event "2011 science square " in National Museum of Nature and Science has been reported.
View full abstract
-
Kayoko Ohno, Yukari Tabei, Kazuo Ogino, Hiroo Toi
2011Volume 30 Pages
57-62
Published: March 16, 2012
Released on J-STAGE: March 04, 2022
RESEARCH REPORT / TECHNICAL REPORT
OPEN ACCESS
We developed the management system for chemical reagents and waste fluid using QR Code. The management system for chemical reagents is register with list of reagents data in Gunma National College of Technology. The registered reagent bottle with attached sticker of QR Code is passed to the users. The contents indicated to the QR Code are user name, date, CAS number, a storage place, and URL of MSDS (Material Safety Data Sheet), etc. It was applied to the purchase reagent from April, 2011. The number of the registered reagent is more than 400 as of Nov. 03, 2011. Similarly, the management system for waste fluid is register with list of the data for the tank into which waste fluid is put. The tank with attached sticker of QR Code is passed to the users. We will add a residual quantity check function to this reagents management system.
View full abstract
-
Kazuhiro Nomura, Takatoshi Tamekuni
2011Volume 30 Pages
63-67
Published: March 16, 2012
Released on J-STAGE: March 04, 2022
RESEARCH REPORT / TECHNICAL REPORT
OPEN ACCESS
This system is a new public transport system to be used instead of a bus on the road, using electric vehicles on the premise that uninhabited driving may be compared to a taxi. It is possible to create a more flexible service compared with usual public road transport. In order to study some possibilities, we developed a calculation system with given conditions for a number of vehicles, an upper limit on service, possible distance covered, demand, and so on.
As a result of this study, we achieved some knowledge concerned with the application of the proposed system through a trial calculation as follows; 1) there is a appropriate range for this system, 2) delays of the starting time with a vehicle, and so on.
View full abstract
-
Kiyokazu Kimura, Tadaaki Shimizu, Miyuki Sakai
2011Volume 30 Pages
69-75
Published: March 16, 2012
Released on J-STAGE: March 04, 2022
RESEARCH REPORT / TECHNICAL REPORT
OPEN ACCESS
We executed a wheel tracking test and Marshall stability test to evaluate the function of asphalt pavement mixed with kenaf fiber. Functions which we evaluated were fluidity resistance and optimal asphalt content. Global warming has been related to an increase of CO
2. Discharge of CO
2 by the road sector make up a quarter of that in civil industry. It is important for us to evaluate pavement from the viewpoint of the environment. So we evaluated reducing the amount of CO
2 by asphalt with kenaf fiber.
As a result of each test in the laboratory, the asphalt mixture with kenaf fiver was superior in fluidity resistance compared with straight asphalt. The amount of CO
2 emissions by asphalt mixture with kenaf fiber was about 93 percent of that of straight asphalt mixture.
View full abstract
-
Kiyokazu Kimura, Hiroshi Abe, Hideo Shimizu
2011Volume 30 Pages
77-81
Published: March 16, 2012
Released on J-STAGE: March 04, 2022
RESEARCH REPORT / TECHNICAL REPORT
OPEN ACCESS
In this paper, keywords relevant to civil engineering are extracted from the present elementary school curriculum guidelines for science. Furthermore, an experiential lesson about civil engineering education based upon these keywords is proposed. As part of the sixth grade science curriculum unit "structure of the ground and change," a lesson about the three themes of "experience of the natural disasters of mudflow and pyroclastic flow," "liquefaction," and "resonance" was conducted.
View full abstract
-
Richard J Sampson
2011Volume 30 Pages
83-89
Published: March 16, 2012
Released on J-STAGE: March 04, 2022
RESEARCH REPORT / TECHNICAL REPORT
OPEN ACCESS
This paper attempts to connect the areas of classroom research, diaries as tools for data collection, and complexity thinking. The article draws upon two recently published examples of diary studies into language learning classroom environments, and endeavours to examine critically strengths and weaknesses of the two studies from the perspective of both general thinking about educational research and research conceptions based upon complexity thinking approaches. The article looks at the use of diary studies for classroom research in four areas: data collection techniques, data analysis techniques, soundness of study, and the drawing of inferences and conclusions. Through such an examination, points to be taken into consideration for the effective use of diaries to study the complexity of language learning classrooms emerge.
View full abstract
-
An Introduction to Macmillan Readers
Koichi Yokoyama
2011Volume 30 Pages
91-100
Published: March 16, 2012
Released on J-STAGE: March 04, 2022
RESEARCH REPORT / TECHNICAL REPORT
OPEN ACCESS
This is an introduction to the complete pack of Macmillan readers with audio CDs: 104 simplified but still readable titles. Compared with the perfectly graded Oxford Bookworms, the series is rather roughly classified with less attractive illustrations, yet the stories are still worth reading. To the joy of the readers, Macmillan Languagehouse has chosen a variety of interesting masterpieces as material, many of which are also available from Oxford University Press, but Macmillan has managed to discover some, not-so-famous, fine works such as Jane Austen’s
Northanger Abbey
and Anne Bronte’s
The Tenant of Wildfell Hall. It is certain that the publisher has been eager to find far more enjoyable texts the rivals have missed.
James Bond 007, Meg Cabot’s
The Princess Diaries, and the novelized versions of the popular American TV drama,
Dawson’s Creek, are surely good examples that Macmillan must be proud of. What is more, it is worth noting the Macmillan Readers’ attached CDs are superior to Oxford Bookworms’ in that most of them include sound effects as well as impressive theme music.
View full abstract
-
An Introduction to Oxford Reading Tree
Koichi Yokoyama
2011Volume 30 Pages
101-112
Published: March 16, 2012
Released on J-STAGE: March 04, 2022
RESEARCH REPORT / TECHNICAL REPORT
OPEN ACCESS
The present paper provides the students at Gunma National College of Technology with brief summaries of the Oxford Reading Tree stories, literacy textbooks originally published for children at British primary schools. Today the series are being read all over the world, including Japan, where English has recently become a required subject at elementary schools and as a natural result parents have much keener interest in earlier foreign language training for their children at home. No doubt Oxford Reading Tree stories are ideal textbooks for young beginners of English. The author Roderick Hunt has written the funny, heartwarming, and fantastic stories mostly about three young siblings: Kipper, Biff, and Chip; the illustrator Alex Brychta has charmingly designed not only these main characters but also minor ones such as their dog Floppy, their Gran and their school friends, with his wonderful pictures. Their collaborative works can be enjoyed and probably even more appreciated among older learners of English. Thus it is highly recommended that the students at our school read the stories and listen to the attached audio CDs in order to improve their abilities of English as an international language.
View full abstract
-
A Comparison of Students of Economics Major
Kentaro Takahashi, Hiroshi Sakuraoka
2011Volume 30 Pages
113-117
Published: March 16, 2012
Released on J-STAGE: March 04, 2022
RESEARCH REPORT / TECHNICAL REPORT
OPEN ACCESS
The purpose of this study is to clarify the present states and problem of the physical fitness that the 4th grade female students of the Gunma National College of Technology face by analyzing the data of The Ministry of Education and Science Fitness Test.
The result of the analysis was as follows:
1) The physical fitness of students was low in comparison with that of the national average with the exception of grip strength.
2) Especially the students were inferior in physical endurance, muscle power and coordination capability.
3) The students of economics major were superior to agility, tenderness and physical endurance.
4) 45% students didn’t have a sports activity in their daily life, so that it seems to become increasingly difficult to maintain their physical fitness.
From the results it is strongly recommended that almost all of the students at the Gunma National college of Technology improve their physical fitness by participating in a variety of sports activity.
View full abstract