JaLCDOI 10.18926/fest/55732
FullText URL fest_023_049_079.pdf
Author Fumikazu, Ichiminami| Meltem Okur Dinçsoy| Enver Erdin Dinçsoy|
Abstract There are many limitations and difficulties in terms of expanding agricultural lands. Also, some other factors affect the agricultural lands that result in decreases such as climate change, erosion and misuse of the lands. It is clear that these developments in agricultural land use threaten the future of human welfare, social conditions, economic growth and food supply. In this study, we examined the land use and its significance that represent past agriculture and regional characteristics in the Chugoku region including Okayama prefecture and the Seto Inland Sea. Specifically, among the products called as industrial crops, such as cotton, pyrethrum, rush, tobacco, rapeseed, mulberry and tea, were adopted as the indicators. Currently, these landscapes can hardly be seen, only leaves of tobacco and tea can still be seen in mountainous areas. Even in agricultural land usewhich has almost disappeared now, it may have indirect influence as in the case of reclaimed land and rush products. Therefore, we reaffirmed in this study the reasons for their existence and their significance.
Keywords industrial crop cultivated area rural geography agriculture Okayama prefecture
Publication Title 岡山大学環境理工学部研究報告
Published Date 2018-03
Volume volume23
Issue issue1
Start Page 49
End Page 79
ISSN 13419099
language 英語
File Version publisher
NAID 120006414150
JaLCDOI 10.18926/15705
FullText URL Mem_Sch_Eng_OU_11_1_31.pdf
Author Inouye Hiroshi|
Abstract In this paper we deal with traffic behaviours on a section of highway including an on-ramp by means of queuing theory. It is the purpose of this paper to provide the adequate capacity for highway on-ramps, which is useful for the design of on-ramps and the traffic control of highway. The highway on-ramp merging is modeled as a queue and the system is solved. Then the maximum possible flows for merging from an on-ramp is obtained in a form of an function of through lane flows. The traffic capacity of an on-ramp is estimated from the relation between the average waiting time before merging and the incoming flow from an on-ramp, which is induced by the theory of queues.
Publication Title Memoirs of the School of Engineering, Okayama University
Published Date 1976-07-20
Volume volume11
Issue issue1
Start Page 31
End Page 43
ISSN 0475-0071
language 英語
File Version publisher
NAID 120002307164
JaLCDOI 10.18926/14080
FullText URL Mem_Fac_Eng_OU_41_1_11.pdf
Author Nogami, Yasuyuki| Morikawa, Yoshitaka|
Abstract This paper proposes an algorithm for generating irreducible cubic trinomials in the form x(3) + ax + b, b ∈ F(p), where a is a certain fixed non-zero element in the prime field F(p). The proposed algorithm needs a certain irreducible cubic trinomial over F(p) to be previously given as a generator; however, the proposed algorithm can generate irreducible cubic polynomials one after another by changing a certain parameter in F(p). In this paper, we compare the calculation cost and the average computation time for generating an irreducible cubic polynomial, especially trinomial, among Hiramoto et al. irreducibility testing algorithm, Berlekamp-Massey minimal polynomial determining algorithm, and the proposed algorithm. From the experimental results, it is shown that the proposed algorithm is the fastest among the three algorithms for generating irreducible cubic trinomials.
Keywords irreducible cubic polynomial minimal polynomial
Publication Title Memoirs of the Faculty of Engineering, Okayama University
Published Date 2007-01
Volume volume41
Issue issue1
Start Page 11
End Page 19
ISSN 0475-0071
language 英語
File Version publisher
NAID 120002308381
JaLCDOI 10.18926/15728
FullText URL Mem_Sch_Eng_OU_13_225.pdf
Author Kaneda Masahiro| Shinji Hiroshi| Aoyama Mikio|
Abstract This paper deals with the adaptive observer which estimates the states and parameters of unknown system. It is shown that the adaptive observer problem is reduced to the identification of the transformation matrix for an arbitrary designable observer. Moreover, the adaptive process of the unknown parameters is reduced to the linear optimal regulator problem. As the result, a new method is presented to obtain an appropriate adaptive process with good insight. And, in this identification, a linear filter is found to be also useful against noises in input-output data. To achieve high accuracy, a particular nonlinear filtering can improve SN ratio only in the direction of the unknown vector. Even if SN ratio of input-output data has zero dB, sufficient accuracy can be accomplished within suitable correction time. This design algorithm seems to be rather straightforward and practical. Since input sequence is required to be only sufficiently general, the method is applicable to on-line identification also.
Publication Title Memoirs of the School of Engineering, Okayama University
Published Date 1979-03-05
Volume volume13
Start Page 225
End Page 238
ISSN 0475-0071
language 英語
File Version publisher
NAID 120002307984
Author Muramatsu, Mikio| Sigunga, Dalmas O.|
Published Date 1983
Publication Title 岡山大学農学部学術報告
Volume volume61
Issue issue1
Content Type Departmental Bulletin Paper
JaLCDOI 10.18926/15459
FullText URL Mem_Fac_Eng_OU_23_1_31.pdf
Author Miura, Yoshinari| Yuasa Motokazu| Osaka, Akiyoshi| Takahashi, Katsuaki|
Abstract Sodium borosilicate gels of compositions similar to that of Vycor(R) glass like 80SiO(2).15B(2)O(3).5Na(2)O(wt%) were prepared from hydrolysis and polycondensation of tetraethyl orthosilicate, trimethyl borate, and sodium methylate under the HCl catalysis. Variation of the gelation time is examined as a function of the mixing ratio of the starting materials and the catalyst. The thermal behavior of the gels has been discussed on the basis of their TG and DTA traces.
Publication Title Memoirs of the Faculty of Engineering, Okayama University
Published Date 1988-11-22
Volume volume23
Issue issue1
Start Page 31
End Page 38
ISSN 0475-0071
language 英語
File Version publisher
NAID 120002307464
JaLCDOI 10.18926/15462
FullText URL Mem_Fac_Eng_OU_23_1_39.pdf
Author Osaka, Akiyoshi| Yuasa Motokazu| Miura, Yoshinari| Takahashi, Katsuaki|
Abstract Sodium borosilicate gels of compositions similar to that of Vycor(R) glass like 80SiO(2).15B(2)O(3).5Na(2)O (wt%) were prepared from hydrolysis and polycondensation of metal alkoxides under the HCl catalysis. Variation of specific surface area and porosity with temperature indicated that closed pores were opened below 400℃, and collapsed above 450℃ after the porosity reached a maximum value around 450℃. The structural evolution was examined due to IR spectra and a phase separation in the gels was observed. The solubility of the gels into 1N-HCl was studied as a function of the treatment temperature.
Publication Title Memoirs of the Faculty of Engineering, Okayama University
Published Date 1988-11-22
Volume volume23
Issue issue1
Start Page 39
End Page 48
ISSN 0475-0071
language 英語
File Version publisher
NAID 120002307518
JaLCDOI 10.18926/fest/11645
Title Alternative Selective reduction of nitrogen oxide with propylene on alumina-zirconia prepared from Al chelate compound and Zr alkoxide
FullText URL 001_199_204.pdf
Author Kawabata, Koji| Yoshimatsu, Hideyuki| Yabuki, Tatsumi| Osaka, Akiyoshi| Miura, Yoshinari|
Abstract An alumina-zirconia (AZ) composite powder was prepared by thermal decomposition of the organic precursors, which were synthesized from ethyl acetoacetate aluminium diisopropylate and zirconium n-butoxide. Specific surface area of AZ was higher than that of alumina-zirconia (ALK) prepared from aluminium sec-butoxide and zirconium nbutoxide. True density of AZ was lower than that of ALK. Selective reduction of nitrogen oxide with propylene in oxygen-rich atmosphere on AZ was superior to that on ALK.
Keywords Al chelate compound Zr alkoxide alumina-zirconia specific surface area true density selective reduction of nitrogen oxide
Publication Title 岡山大学環境理工学部研究報告
Published Date 1996-03
Volume volume1
Issue issue1
Start Page 199
End Page 204
ISSN 1341-9099
language 日本語
File Version publisher
NAID 110002291536
JaLCDOI 10.18926/15656
FullText URL Mem_Sch_Eng_OU_8_1_15.pdf
Author Fujiwara Yutaka| Osaki Hirokazu| Kikuchi Susumu|
Abstract This paper deals with the allocation technique of the layout whose solution it takes as a little computation time as possible to obtain and which becomes as near to the optimal method as possible. In this method, the relative transport distance of each location and the relative transport volume of each department are calculated from the distance matrix and the volume matriX by the statistical procedures. And allocating departments to locations is determined by one to one correspondence between the arranged relative transport distances and the arranged relative transport volumes. This method was called the allocation technique by the statistical procedure ( ATSP in short ). This method doesn't use the heuristic algorithm. Therefore the calculation time can be reduced much in comparison with any other methods. As the algorithm of ATSP method is very simple, the sub-optimal layout can be determined easily by using the desk-calculator in cases of any layout problems.
Publication Title Memoirs of the School of Engineering, Okayama University
Published Date 1973-07-20
Volume volume8
Issue issue1
Start Page 15
End Page 24
ISSN 0475-0071
language 英語
File Version publisher
NAID 120002307280
JaLCDOI 10.18926/15164
FullText URL Mem_Fac_Eng_OU_35_41.pdf
Author Kuroboshi, Manabu| Tanaka, Muneaki| Kishimoto, Suguru| Goto, Kentaro| Tanaka, Hideo|
Abstract In 360 females, Bone mineral density (BMD) in lumbar vertebrae (L2-L4) was assessed by quantitative computed tomography (QCT), and the values obtained were compared with the frequency of vertebral transformation or fracture as assessed by lateral scan image (scanogram) by X-ray CT. A correlation was observed between the frequency of vertebral transformation (or fracture) and lumbar BMD values : BMD under 125 mg/cm(3) was observed over 90% of women with vertebral transformation, and BMD under 70mg/cm(3) was found about 50% of them. These results suggest that decrease in BMD in lumbar vertebrae leads to vertebral transformation or fracture. Thus, measurement of BMD by QCT would be very useful in predicting vertebral transformation or fractures.
Publication Title Memoirs of the Faculty of Engineering, Okayama University
Published Date 2001-03-27
Volume volume35
Issue issue1-2
Start Page 41
End Page 46
ISSN 0475-0071
language 英語
File Version publisher
NAID 120002307948
Author Kondō, M.| Kasahara, Y.|
Published Date 1942-12-27
Publication Title Berichte des Ohara Instituts für landwirtschaftliche Forschungen
Volume volume9
Issue issue2
Content Type Departmental Bulletin Paper
Author Leonard, Julian|
Published Date 2012-12-25
Publication Title 岡山大学文学部紀要
Volume volume58
Content Type Departmental Bulletin Paper
Author Seow, Teck Keong| Inagaki, Kenji| Tamura, Takashi| Tanaka, Hidehiko|
Published Date 1997-02
Publication Title 岡山大学農学部学術報告
Volume volume86
Issue issue1
Content Type Departmental Bulletin Paper
JaLCDOI 10.18926/15312
Title Alternative 老年者気管支喘息における気道炎症細胞.喘息重症度と関連した気道細胞反応の特徴
FullText URL 064_083_088.pdf
Author Tanizaki, Yoshiro| Kitani, Hikaru| Mifune, Takashi| Mitsunobu, Fumihiro| Kajimoto, Kazuhiro| Sugimoto, Keisuke| Yokota, Satoshi| Hiramatsu, Junichi| Nakagiri, Yoshiyasu| Harada, Hideo| Kimura, Ikuro|
Abstract Cellular composition of bronchoalveolar lavage (BAL) fluid was examined in 11 elderly asthmatics over the age of 70, and the results were compared with those of 11 younger asthmatics under the age of 50. In the subjects with mild asthma, the proportion of BAL cells in the elderly subjects was 86.2% macrophages, 11.0% lymphocytes, 1.9% neutrophils, 0.9% eosinophils and 0.08% basophilic cells. The proportion of neutrophils and eosinophils in the BAL fluid was slightly higher in younger subjects with mild asthma compared with that in elderly subjects, although no significant difference was found between the two groups. In subjects with severe asthma, the proportions of lymphocytes, neutrophils, eosinophils and basophilic cells were more increased in both younger and older patients compared to those with mild asthma, and a significant increase in the number of BAL eosinophils was found in younger subjects with severe asthma compared to those with mild asthma (p < 0.05). However, no significant difference was present in the proportion of BAL cells between younger and older patients with severe asthma. The results reveal that BAL cells are more increased in subjects with suvere asthma than in those with mild asthma in both younger and older subjects, and show the possibility that this increase is more predominant in neutrophils in older subjects and in eosinophils in younger subjects.
Abstract Alternative 70才以上の老年者気管支喘息11例(平均年齢71.4才)を対象に,重症度と気道細胞反応との関連について検討を加えた。なお,対照として50才以下の喘息症例11例(平均年齢33.5才)を選んだ。1.老年者の軽症型喘息における気管支肺胞洗浄(BAL)液中の出現細胞の頻度は,マクロファージが86.2%,リンパ球が11.0%,好中球が1.9%,好酸球が0.9%,好塩基性細胞が0.08%であった。BAL液中の好中球,好酸球の頻度は若青年症例でやや高い傾向が見られたが,両群間に有意の差は見られなかった。重症例では,老年症例,若青年症例とも,軽症例に比べリンパ球,好中球,好酸球などのBAL細胞の出現頻度が増加しており,特に好酸球では若青年症例の重症例で軽症例に比べ有意に高い頻度が観察された。これらの結果は, リンパ球,好中球,好酸球などのBAL細胞は,軽症例に比べ重症例で増加してくること,そして,その増加は老年症例では好中球,若青年症例では好酸球の増加が特徴的であることを示唆しているものと考えられた。
Keywords Neutrophils (好中球) Eosinophils (好酸球) Bronchoalveolar lavage (気管支肺胞洗浄) asthma severity (喘息重症度)
Publication Title 岡大三朝分院研究報告
Published Date 1993-06
Volume volume64
Start Page 83
End Page 88
ISSN 0918-7839
language 英語
File Version publisher
NAID 120002307736
Author Ashida, Kozo| Mitsunobu, Fumihiro| Hosaki, Yasuhiro| Tsugeno, Hirofumi| Nishida, Norikazu| Nagata, Takuya| Yokoi, Tadashi| Takata, Shingo| Tanizaki, Yoshiro|
Published Date 2003-02-01
Publication Title 岡大三朝医療センター研究報告
Volume volume73
Content Type Departmental Bulletin Paper
Author Kondo, Naoshi| Shibano, Yasunori|
Published Date 1989
Publication Title 岡山大学農学部学術報告
Volume volume74
Issue issue1
Content Type Departmental Bulletin Paper
JaLCDOI 10.18926/15491
FullText URL Mem_Fac_Eng_OU_24_2_11.pdf
Author Sakakibara, Akira| Kanadani, Teruto|
Abstract Aging behavior of Al-0.23mass % Si alloy was studied by measurements of elecrical resistivity. Resistvity maximum was observed in the aging curves at 273K after quenching from various temperatures. Appearance of maximum and its dependence on the quenching temperature were attributed to the formation of GP zones. Even in a more dilute alloy as 0.01mass % Si, the maximum of resistivity was also recognized.
Publication Title Memoirs of the Faculty of Engineering, Okayama University
Published Date 1990-03-29
Volume volume24
Issue issue2
Start Page 11
End Page 16
ISSN 0475-0071
language 英語
File Version publisher
NAID 120002307615
JaLCDOI 10.18926/15715
FullText URL Mem_Sch_Eng_OU_13_133.pdf
Author Ohta, Mutsuo| Kanadani, Teruto| Yamada, Masuo| Sakakibara, Akira|
Abstract Aging and reversion in dilute Al-Ag alloys are studied by means of the measurements of electrical resistivity. Results obtained are as follows: 1) Increase in the as-quenched resistivity is found for a low quenching temperature. This increase may be due to the fluctuation of solute concentration at the quenching temperature. 2) When the fluctuation exists in the alloy, the aging rate becomes slow and the maximum resistivity in the isothermal aging curve becomes small as the vacancyconcentration becomes low. The maximum resistivity becomes large again when the vacancy concentration becomes further lower, and finally the maximum does not appear. 3) These behaviors are explained in terms of the difference in the rate of growth of the G.P. zones in the regions of higher and lower solute concentration induced by the fluctuation and in terms of the change of this difference with vacancy concentration. 4) G.P. zones may be formed by the spinodal decomposition with indefinite surfaces at first, grown to larger ones with difinite surfaces and changed to ordered nzones in the alloy. 5) It is confirmed that G.P. zones are formed by the nucleation-and-growth mechanism also in Al-Ag alloys above the spinodal temperature.
Publication Title Memoirs of the School of Engineering, Okayama University
Published Date 1979-03-05
Volume volume13
Start Page 133
End Page 152
ISSN 0475-0071
language 英語
File Version publisher
NAID 120002307468
Author Nakajima, Shuhei| Takaishi, Kazuto| Nagano, Youichi| Alen, Yohannes| Kawazu, Kazuyoshi| Baba, Naomichi|
Published Date 2004-02
Publication Title 岡山大学農学部学術報告
Volume volume93
Issue issue1
Content Type Departmental Bulletin Paper
JaLCDOI 10.18926/46967
FullText URL mfe_37_1_001_010.pdf
Author Sotobayashi, Ken| Konishi, Masami| Nishi, Tatsushi| Imai, Jun|
Abstract Auto Guided Vehicles (AGVs) are widely used in a semi-conductor fabricating factory and contribute to the stable production of a high quality semi-conductor products. In the near future, further expansion of the transportation system is expected accompanied with the rapid growth of semi-conductor industries. In such situation, the necessity of performing quick planning of transportation route and transportation control will be elevated. In this paper, practicable planning of the transportation route and transportation control are studied based on the decentralized agent method. Especially, the geometrical sizes of AGVs are considered in the determination of transportation routes and control strategy avoiding the occurrence of mutual collisions or deadlock of AGVs.
Publication Title Memoirs of the Faculty of Engineering, Okayama University
Published Date 2002-11
Volume volume37
Issue issue1
Start Page 1
End Page 10
ISSN 0475-0071
language 英語
File Version publisher
NAID 120003457322