The Journal of Yokkaichi University
Online ISSN : 2433-4685
Print ISSN : 1340-5543
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THE JOURNAL of YOKKAICHI UNIVERSITY
Showing 1-12 articles out of 12 articles from the selected issue
  • Seisho Yoshiyama
    2019 Volume 32 Issue 1 Pages 1-20
    Published: 2019
    Released: November 20, 2019
    JOURNALS FREE ACCESS
    In order for human beings to live, they need to realize their goals by adapting to their environment. But one’s ability to adapt is affected by one’s own intellectual capacities. And these correlate strongly with one’s progress in studies at college. Unfortunately, there are many students who do not know how to study at college academically in spite of being admitted to college. In this paper, I give an answer to the question of how to turn successfully into an achieving college student, based on my previous experiences of studying as a college student, and recent experiences of visiting many college classes as a college teacher, from a viewpoint of the relation of social environment to studies and human life.
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  • Kayoko Awaya
    2019 Volume 32 Issue 1 Pages 21-40
    Published: 2019
    Released: November 20, 2019
    JOURNALS FREE ACCESS
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  • Takashi Okuhara
    2019 Volume 32 Issue 1 Pages 41-55
    Published: 2019
    Released: November 20, 2019
    JOURNALS FREE ACCESS
    In this study I examine the asset quality of development expenditure capitalized by IAS 38 of International Accounting Standards. Specifically, I focus on EU major automobile companies. And, I analyze the relationship between the development assets capitalized as part of intangible assets on the consolidated balance sheet and the level of future profit margin / the uncertainty of future profit margin. In addition, I also examine the relationship between the R & D expenses charged to the consolidated income statement and the level of future profit margin / the uncertainty of future profit margin. I find that development assets have a positive relationship with the level of profit margin in the future and do not increase the uncertainty of future profit margin. On the other hand, I also find that R & D expenses have the effect of increasing the level of future profit margins, but have the effect of increasing the uncertainty of future profit margins.
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  • Atsushi Higashimura
    2019 Volume 32 Issue 1 Pages 57-89
    Published: 2019
    Released: November 20, 2019
    JOURNALS FREE ACCESS
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  • Mariko Matsui
    2019 Volume 32 Issue 1 Pages 91-105
    Published: 2019
    Released: November 20, 2019
    JOURNALS FREE ACCESS
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  • Tsukane Ogawa, Masaaki Tanaka
    2019 Volume 32 Issue 1 Pages 107-115
    Published: 2019
    Released: November 20, 2019
    JOURNALS FREE ACCESS
    In this paper, we present a classification of diatom taxa collected from the Memenai-numa, or Kouhone-numa, (“numa” = marshland), which is one of the pools located around the mouth of the Yuchikawa River, in Wakkanai, Hokkaido. The classification makes use of light and scanning electron microscopy. Little is known about the plankton phase in Memenai-numa beyond what is reported in Tanaka 2003 and 2004. This paper follows those reports. The total numbers of forms identified this time come to 16 genera and 38 taxa. The genus having the most taxa is Gomphonema followed by Eunotia and Nitzschia. The dominant taxum is Staurosira venter which accounts for 80.5% of the whole. Five electron microscope figures are attached.
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  • Tsukane Ogawa, Masaaki Tanaka
    2019 Volume 32 Issue 1 Pages 117-128
    Published: 2019
    Released: November 20, 2019
    JOURNALS FREE ACCESS
    Cymbella janischii is an alien species of mat-forming water plants that has invaded various river systems in Japan. Recently, it is asserted that it may decrease feed for fish such as sweetfish, cause damage in water treatment facilities, or be detrimental to riverscapes. But the actual details of its spread in Japan or even of its morphological characteristics are not well known. In this survey, we first investigated Cymbella janischii in the Fuji River system using light and scanning electron microscopy. While no mat-like state condition could be found this time, the species appeared at all 5 collection locations except the upper Shio River. One difference from past surveys elsewhere was that few examples of Gomphoneis minutia were found. Apparently, the two species do not necessarily have to appear together. Secondly, specimens of C. janischii from the Fuji River system were compared with specimens collected from the upper Tama River. The Tama River specimens appear to divide into two clusters with respect to length and width and the specimens from the Fuji River match one of these clusters. It might be plausible to propose this as a new form of C. janischii. We discuss this possibility statistically.
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  • Masaaki Tanaka, Naoko Makita, Tsukane Ogawa
    2019 Volume 32 Issue 1 Pages 129-137
    Published: 2019
    Released: November 20, 2019
    JOURNALS FREE ACCESS
    A lot of small white spots appeared on the surface of the dried brown algae Wakame, which was collected in Shonan, Kanagawa prefecture. We observed them using light microscopy and scanning electron microscopy (SEM). It was found that large amount of diatoms, Licmophora communis (Heiberg 1863) Grunow in Van Heurck 1881.
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  • Satoshi Chiba
    2019 Volume 32 Issue 1 Pages 139-155
    Published: 2019
    Released: November 20, 2019
    JOURNALS FREE ACCESS
    The decadal change of the water quality of Ise Bay since the 1980s was studied with the use of the observation data obtained by the Wide Area Comprehensive Water Quality Survey conducted by the Ministry of the Environment of Japan. The study disclosed the trend of miniaturization of phytoplankton and the increment of DOC:TOC ratio at the surface water. The miniaturization occurred across the entire bay and the carbon content per a cell is in proportion to TN:TP ratio that has been declining according to the governmental action for reducing nutrient loads into the bay. Since the miniaturization enhances an intake rate of nutrients, phytoplankton of smaller cells could have advantage against the nutrient deficient condition at the surface water. In addition, the smaller cell is apt to enhance the primary production through its higher photosynthesis rate. The long lasting question for the continuation of high COD concentration at the surface water in spite of the prescribed governmental action could be explained by this argument. If so, the miniaturization could affect as well the generation of the hypoxic water mass above the seabed, i.e. the most serious problem of the basin. The source of DOC for the high DOC:TOC phenomenon may be the exudation from phytoplankton which releases DOC in the nutrient deficient condition at the surface water.
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  • Satoshi Chiba
    2019 Volume 32 Issue 1 Pages 157-173
    Published: 2019
    Released: November 20, 2019
    JOURNALS FREE ACCESS
    The mechanism of the everlasting occurrence of huge hypoxic water mass in Ise Bay has not been elucidated. One of the causes that disturbs our understanding for the phenomenon is the existence of relatively large fluctuations (i.e. short-term variation) contained in the dissolved oxygen data in the middle and the lower layer of the bay. The three-layered box model was developed to investigate the relation between the fluctuation and the water exchange with the Pacific Ocean. The monthly data for the water exchange rates through the middle and the lower layer as well as the dissolved oxygen concentration of the two layers from 1986 to 2015 were analyzed by the model. The fluctuations in the oxygen data were well reproduced by the calculation. This results proved our view for the cause of the oxygen fluctuation and assured the further development of studies for the hypoxic water of Ise Bay.
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  • Naoko Makita, Masaaki Tanaka
    2019 Volume 32 Issue 1 Pages 175-186
    Published: 2019
    Released: November 20, 2019
    JOURNALS FREE ACCESS
    We report on the plankton assemblages collected from Nagao-ike pond, Aichi prefecture, in April 2019. A total of 52 taxa, belonging to 39 genera were found there. The taxon which appears with highest frequency is the genus Lambertia. We found a lot of Lambertia attached on the thoracic limbs in Daphnia.
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  • Shinsuke Takashima
    2019 Volume 32 Issue 1 Pages 196-188
    Published: 2019
    Released: November 20, 2019
    JOURNALS FREE ACCESS
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