The purpose of this study is as follows 1) to improve an arbitrary oxygen control system for an intermittent low oxygen condition with high accuracy, and 2) to investigate the characteristic body movements of the chick embryo under the intermittent hypoxic (18%) environment. The improved system controlled the oxygen concentration within error of 0.11%. The one embryo was directly recorded for 72-144 hours by a CCD camera. Although the template matching method was applied to the detection of the embryonic body movements, plenty of detection errors occurred because maintaining suitable focus on the embryo was difficult due to embryonic development in long-term measurements. The automatic focus adjusting system for the long-term measurements and more experimental data are required in the future study.
Our laboratory has attempted to measure chick embryos directly by a CCD camera through the hole opened at blank end of the eggs. Previous studies showed that this hole has not influenced to embryonic development. We aimed to develop the non-invasive image recording system by infrared light as a better measurement system. As a result, a wavelength of the 850nm was better in terms of penetration of the forefinger and the distinguishment of vessels. However, light of 850nm and its peripheral wavelength could not distinctly distinguish both chick and blue-breasted quail embryos. In this research, the developed system could not clearly observe embryos non-invasively. Other wavelengths/light intensions or different techniques (e.g., using a sensitive or a high resolution receiving element for the infrared light) should be tried on this system in the future study.
The purpose of this study is to develop a control system of an arbitrary oxygen (O2) concentration with quick responses and high accurate control. The proportional control electromagnetic valve can change the flow rate from 0% to 100% (10l/min) with the step of 1.25%, that is, it can control the oxygen concentration of an experimental chamber with high accuracy. Additionally, the gas of 30% oxygen was used to recover quickly to the normal air condition. As the result, the average difference between target oxygen concentration and actual condition was ±0.35O2%, which was larger than that of the previous system. In addition, an undershoot and an overshoot of control often occurred near the target value. Since these errors are attributed to the non-optimal control program, it must be improved for high accurate oxygen concentration.
Lithium tellurite (Li2TeO3, LTO) is used as a base material for tellurite fiber glass. It was reported that LTO could be produced by grinding LiOH・H2O and TeO2. And it was found that the pre-treated process based on grinding LiOH・H2O has an effect on the yields of LTO and clarified that the production of LTO was affected by hydrated water. Then, we studied the pre-treatment effects systematically by estimating the products with TG-DTA, XRD and AE measuring method, and also tried to elucidate preparation process of LTO. As a result, we observed that yield of LTO is increased by a factor of 2-3 by using pre-treatment in TG-DTA. In the AE measuring method, it was found that AE peak position moves from dehydration peak (80℃) to 150-200℃ by grinding mixtures. Behavior of hydrated water was also discussed.
Production of lead silicate glass declined by 9th AD in Japan. Instead lead potash silicate glass (K2O-PbO-SiO2), a new compositional type of glass, flowed into Japan from China. Then lead potash silicate glass become a major glass type in the medieval period of Japan. Especially in Hokkaido, glass beads were favored by Ainu culture. So we focus on the circulation of glass in Hokkaido at the Ainu cultural period to understand the glass trade in relation with glass in Honshu. In this study, we analyzed glass beads excavated from sites in southern Hokkaido, which were important bases located between Honshu and central Hokkaido. The samples are excavated from archaeological sites at the periods from the 15th～19th century AD. The analytical results showed that these glass beads can be classified into two types – lead potash silicate glass (K2O-PbO-SiO2) and potash lime silicate glass (K2O-CaO-SiO2). These types of glass are also major types distributed in Hokkaido at the period of Ainu culture. In addition, we have found the presence of a large number of purple glass beads made of lead potash silicate glass utilizing antimony oxide as emulsifier. Interestingly, they are only characteristic to southern part of Hokkaido.
This paper reports the result of the chemical analysis of the Chinese coin Yongle Tongbao owned by Khabarovsk Regional Museum named after N.I. Grodekov. It was found that this Yongle Tongbao is the officially minted coin. This coin was excavated in Krasnokurovka burial ground in the Khabarovsk Territory. The burial ground was made under the Pokrovka culture (from the 9 th to the 13 th centuries). However the Yongle Tongbao, which was first minted in 1408, was discovered in the mound No. 30 of Krasnokurovka burial ground. So, it is necessary to reconsider the end period of the Pokrovka culture.
At National Institute of Technology Hakodate, we set subjects for studying Fundamental Competencies for Working Persons. Specifically, write a resume, learn honorifics, and practice interviews. Through them, we can analyze ourselves and develop the ability to work with our colleagues, thought-out ability and active ability. And I hope that the next year’s course selection will be done smoothly.
This study aims to establish a training system that promotes the proactive after-school independent study. This paper reports on the second year of the operation of a training system aimed at improving students’ attitudes toward learning. We had two changes of the Ondoku-Dojo project in the second year. One was to allow the participants both physical and temporal flexibility. In the second year, the Dojo was set up in an open space in a hall next to the teacher’s study room. Four laptop PCs were available for participants and they were able to use one anytime they want to at school. The other change was flexible learner workload. In the second Ondoku-Dojo training, each student made a learning plan in consultation with the teacher and the supplementary test was designed as a “step-by-step” program. Students were allowed to proceed through each step at their own speed while seeing other participants’ progress. Within those changes, the second year operation of Ondoku-Dojo resulted in educational improvement in the participating students’ learning attitudes and helped them successfully complete all the tasks, which they had failed in the first year.
At the Fukuyama Castle Town site in Matsumae town, Hokkaido, one glass bead has been excavated．In this paper，we examined the age of glass bead based on the porcelain excavated at Fukuyama Castle Town site．We analyzed the components of the glass bead by XRF . The result of analysis shows that the bead is the alkaline lime glass.
This Study examines beads-making techinique and chemical composition of glass beads excavated from Minamikawa 2 Site in Setana town,Hokkaido. This Site is an archaeological site of the Ainu Cultural Period from the 16th century to the 17th century. The result of chemical analysis revealed that they had Potash-lead-sillica glass type（K2O-PbO-SiO2）.Also, these are made with winding technique.
The potteries were produced in various sites of southern Sakhalin region and the northern and eastern Hokkaido. These sites belonged to the Jomon culture, the Epi-jomon culture and the Susuya period of Okhotsk colture. The potteries were made by mixing sands in clay and the chemical composition of mixed sands contain geological information of the region where potteries were made. The chemical analysis of soil of potteries can estimate the product sites location. This technique can help clarify the product sites of each potteries and the route of delivery of the potteries.
In this study, chemical compositions were reexamined on the glass beads excavated from the Usu-Oyakotsu site in Date City, Hokkaido. As a result, it was possible to clarify that these glass beads are composed of potash lime glass and potash lead glass. In particular, it is noteworthy that the majority was potash lime glass. In addition, it became clear that the potash lime glass is divided into two compositional types, lead - containing type and lead - free type. Especially for lead - containing type, it might be one of the features of potash lime glass distributed in the early Ainu culture period.
After re-employment at the college from 2015, I tried to change the lesson-style from passive learning of students to teaching each other in the group how to solve problems. So as to compensate for the drawback of lack of lesson hours, I also carried out flipped classroom at the same time. As a result, the average point of the regular exams was increased by about 20 points, and student's motivation for learning increased. From 2016, in order to deepen the conceptual understanding, I also introduced peer instructions in the lessons. After all, student's understanding deepened, but at the same time the problem of how to activate the group discussion became clear. Every time I told the students to write a "reflection card" at the end of the lesson, that was an important mechanism for me to know the students' understanding of the lesson.
As the world becomes increasingly globalized, the situations in which people need to use English in communication will increase. Thus, concerns over TOEIC scores have risen. Therefore, TOEIC special lectures for voluntary participants of all grades have been conducted at National Institute of Technology, Hakodate College for two years. This paper reports on the effects of the lectures based on the scores and the number of examinees in TOEIC IP. As a result, the score of the participants in these lectures were increased significantly. In addition, the number of examinees were increased more than three times. Therefore, conducting these lectures has resulted in a good effect on the score of participants and the number of examinees. However, the average score of the TOEIC IP was decreased. Considering these results, it can be presumed that these lectures had an effect on the limited students. Moreover, these results suggest that increasing average score as a school is needed.
Based on the hypothesis that Hokkaido gold dust was contained in the enormous amount of gold that supported the wealth of the Oshu-Fujiwara clan, we analyzed gold dusts which were obtained from relics excavated in Yanagi-no-Gosho Site in Hiraizumi.In this research, we conducted the analysis using statistical methods such as data similarity, principal component analysis(PCA) and support vector machine(SVM). The target data are elemental analysis data sets of gold on relics excavated from Hiraizumi and they are compared to data sets of gold dust picked in Hokkaido and Tohoku region.Through these statistical analysis, we concluded that the gold on relics excavated from Hiraizumi was closer to the elemental constituents of gold dust picked in Iwate Prefecture. About this Hiraizumi sample, we were not able to estimate that its gold might have been brought from Hokkaido. However, we are thinking that these statistical approaches are useful methods to clarify facts of the trade between the Oshu-Fujiwara clan and indigenous people in Hokkaido.
Complicated sheet metal development diagram has some points in common with Japanese traditional origami technology. We put a pulse piercing (equally spaced hole like a perforated line) by a FiberLaser processing machine on thin metal sheet and fold along the fold line. By providing environment making metal craft with 3-D solid art, we 1) encourage student’s creativity and make students learn and interested in sheet metal technology, and 2) pursue the possibility on industrial application.Application of Japanese traditional origami technology to thin metal sheet (metal craft) creates ideas of complicated sheet metal development diagrams, and we can expect metal craft has an effect on technical education to cultivate sensitivity.
The purpose of this study is to develop new experiment theme for students to aid understanding Operating-System(OS). In the "Computer-Engineering-Course" of "the Department of Production Systems Engineering", we teach about the OS. For the experiment of Computer-Engineering-Course, we have been using small computer reference-board which embedded Real-Time OS (T-kernel 2.0). This reference-board has LCD-panel(800x480pixcels) with touch panel, GPIO(4bit) for general purpose input/output, push-switch for hardware-interrupt. The "T-kernel" is the newest version of TRON OS, and it has been used in many embed-systems. To develop an application system with the T-kernel, it is necessary to study multi-task-programming, interrupt processing and task-to-task communication. We developed motor-control-system which used touch-panel, GPIO port and push-switch. By touching LCD-panel or push-switch, it will change display image, the motor will turn on or turn off. Moreover, the motor has 4 status; turning clockwise, turning counterclockwise, stopping, and idling. We can choose one from them. By using this experimental tools, we expect that it is helpful for students to learn about OS through lecture and experiment.
“Shoto Shiso” is the collection of Chinese-style poems by KAKIZAKI Tomoshige (pen name of Shoto, hereafter Shoto), who married Sono, the granddaughter of KAKIZAKI Hakyo (1764-1826) , famous artist and retainer to Matsumae clan, and set up a new Kakizaki family. 303 Shoto’s poems have been recorded from the 6th year of Tenpo (1835) to the 2nd year of Keio (1866). Until now, not all of the works have been read through and put into print. In this paper, we will attempt to transcribe, explain the vocabulary and translate the “Shoto Shiso” into modern language , yet unknown throughout the world.