208 research outputs found
A novel approach to varve counting using muXRF and X-radiography in combination with thin-section microscopy, applied to the Late Glacial chronology from Lake Suigetsu, Japan
No full textAbstract not availableMichael Marshall, Gordon Schlolaut, Takeshi Nakagawa, Henry Lamb, Achim Brauer, Richard Staff, Christopher Bronk Ramsey, Pavel Tarasov, Katsuya Gotanda, Tsuyoshi Haraguchi, Yusuke Yokoyama, Hitoshi Yonenobu, Ryuji Tada, Suigetsu 2006 Project Member
An Algorithm for Mining Implicit Itemset Pairs Based on Differences of Correlations
No full textGiven a transaction database as a global set of transactions and its local database obtained by some conditioning to the global one, we consider a pair of itemsets whose degrees of correlations are higher in the local database than in the global one. A problem of finding paired itemsets with high correlation in one database is known as Discovery of Correlation, and some algorithms to search for such characteristic paired itemsets are already proposed. However, even non-characteristic paired itemsets in the local database are also meaningful, provided the degree of correlation increases much higher in the local database than in the global one. They can be an implicit and hidden evidence showing that something particular to the local database occurs even though they are not yet realized as characteristic ones in the local. From this viewpoint, we have already proposed to measure the significance of paired itemsets by the difference of two correlations before and after the conditioning to the local database, and define a notion of DC pairs whose degrees of differences of correlations are high. As DC pairs are regarded as compound itemsets consisting of two component itemsets, we can have two basic strategies for finding them. One strategy firstly examines the compound itemsets and then the components, while another one does the component itemsets and then the compound ones. According to the former strategy, which we have already proposed and tested for its effectiveness, we have to enumerate many number of candidate compound itemsets that cannot be decomposable to components. For this reason, this paper presents a new algorithm according to the second strategy. It firstly enumerate possible component itemsets based on a new pruning rule for cutting off useless components. Secondly it forms the compound itemsets by combining the components thus detected, while we also make use of a constraint for preventing our algorithm from checking meaningless combinations
sj-docx-3-anr-10.1177_20530196221135077 – Supplemental material for Beppu Bay, Japan, as a candidate Global Boundaries Stratotype Section and Point for an Anthropocene series
No full textSupplemental material, sj-docx-3-anr-10.1177_20530196221135077 for Beppu Bay, Japan, as a candidate Global Boundaries Stratotype Section and Point for an Anthropocene series by Michinobu Kuwae, Bruce P Finney, Zhiyuan Shi, Aya Sakaguchi, Narumi Tsugeki, Takayuki Omori, Tetsuro Agusa, Yoshiaki Suzuki, Yusuke Yokoyama, Hirofumi Hinata, Yoshio Hatada, Jun Inoue, Kazumi Matsuoka, Misaki Shimada, Hikaru Takahara, Shin Takahashi, Daisuke Ueno, Atsuko Amano, Jun Tsutsumi, Masanobu Yamamoto, Keiji Takemura, Keitaro Yamada, Ken Ikehara, Tsuyoshi Haraguchi, Stephen Tims, Michaela Froehlich, Leslie Keith Fifield, Takahiro Aze, Kimikazu Sasa, Tsutomu Takahashi, Masumi Matsumura, Yukinori Tani, Peter R Leavitt, Hideyuki Doi, Tomohisa Irino, Kazuyoshi Moriya, Akira Hayashida, Kotaro Hirose, Hidekazu Suzuki and Yoshiki Saito in The Anthropocene Review</p
sj-xlsx-4-anr-10.1177_20530196221135077 – Supplemental material for Beppu Bay, Japan, as a candidate Global Boundaries Stratotype Section and Point for an Anthropocene series
No full textSupplemental material, sj-xlsx-4-anr-10.1177_20530196221135077 for Beppu Bay, Japan, as a candidate Global Boundaries Stratotype Section and Point for an Anthropocene series by Michinobu Kuwae, Bruce P Finney, Zhiyuan Shi, Aya Sakaguchi, Narumi Tsugeki, Takayuki Omori, Tetsuro Agusa, Yoshiaki Suzuki, Yusuke Yokoyama, Hirofumi Hinata, Yoshio Hatada, Jun Inoue, Kazumi Matsuoka, Misaki Shimada, Hikaru Takahara, Shin Takahashi, Daisuke Ueno, Atsuko Amano, Jun Tsutsumi, Masanobu Yamamoto, Keiji Takemura, Keitaro Yamada, Ken Ikehara, Tsuyoshi Haraguchi, Stephen Tims, Michaela Froehlich, Leslie Keith Fifield, Takahiro Aze, Kimikazu Sasa, Tsutomu Takahashi, Masumi Matsumura, Yukinori Tani, Peter R Leavitt, Hideyuki Doi, Tomohisa Irino, Kazuyoshi Moriya, Akira Hayashida, Kotaro Hirose, Hidekazu Suzuki and Yoshiki Saito in The Anthropocene Review</p
sj-docx-1-anr-10.1177_20530196221135077 – Supplemental material for Beppu Bay, Japan, as a candidate Global Boundaries Stratotype Section and Point for an Anthropocene series
No full textSupplemental material, sj-docx-1-anr-10.1177_20530196221135077 for Beppu Bay, Japan, as a candidate Global Boundaries Stratotype Section and Point for an Anthropocene series by Michinobu Kuwae, Bruce P Finney, Zhiyuan Shi, Aya Sakaguchi, Narumi Tsugeki, Takayuki Omori, Tetsuro Agusa, Yoshiaki Suzuki, Yusuke Yokoyama, Hirofumi Hinata, Yoshio Hatada, Jun Inoue, Kazumi Matsuoka, Misaki Shimada, Hikaru Takahara, Shin Takahashi, Daisuke Ueno, Atsuko Amano, Jun Tsutsumi, Masanobu Yamamoto, Keiji Takemura, Keitaro Yamada, Ken Ikehara, Tsuyoshi Haraguchi, Stephen Tims, Michaela Froehlich, Leslie Keith Fifield, Takahiro Aze, Kimikazu Sasa, Tsutomu Takahashi, Masumi Matsumura, Yukinori Tani, Peter R Leavitt, Hideyuki Doi, Tomohisa Irino, Kazuyoshi Moriya, Akira Hayashida, Kotaro Hirose, Hidekazu Suzuki and Yoshiki Saito in The Anthropocene Review</p
sj-docx-2-anr-10.1177_20530196221135077 – Supplemental material for Beppu Bay, Japan, as a candidate Global Boundaries Stratotype Section and Point for an Anthropocene series
No full textSupplemental material, sj-docx-2-anr-10.1177_20530196221135077 for Beppu Bay, Japan, as a candidate Global Boundaries Stratotype Section and Point for an Anthropocene series by Michinobu Kuwae, Bruce P Finney, Zhiyuan Shi, Aya Sakaguchi, Narumi Tsugeki, Takayuki Omori, Tetsuro Agusa, Yoshiaki Suzuki, Yusuke Yokoyama, Hirofumi Hinata, Yoshio Hatada, Jun Inoue, Kazumi Matsuoka, Misaki Shimada, Hikaru Takahara, Shin Takahashi, Daisuke Ueno, Atsuko Amano, Jun Tsutsumi, Masanobu Yamamoto, Keiji Takemura, Keitaro Yamada, Ken Ikehara, Tsuyoshi Haraguchi, Stephen Tims, Michaela Froehlich, Leslie Keith Fifield, Takahiro Aze, Kimikazu Sasa, Tsutomu Takahashi, Masumi Matsumura, Yukinori Tani, Peter R Leavitt, Hideyuki Doi, Tomohisa Irino, Kazuyoshi Moriya, Akira Hayashida, Kotaro Hirose, Hidekazu Suzuki and Yoshiki Saito in The Anthropocene Review</p
Digital archive of momentarily preserved sedimentary structures in the surf zone of the Kaiso Coast, Japan
No full textThe data archive generated in this project contains the orthoimages and related data of the underwater sedimentary structure that evolved in the surf zone and emerged onto land almost instantaneously on the Kaiso Coast, Japan, due to the sudden uplift of the ground induced by the Noto Peninsula Earthquake on January 1, 2024. Detailed information is provided in the following paper: M. Yuhi, N. Endo, H. Okazaki, Y. Suzuki, F. Masuda, S. Umeda, J. Ninomiya, M. Arita, K. Futagi, T. Konno, and T. Haraguchi. “Digital archive of momentarily preserved sedimentary structure in surf zone” Submitted to Scientific Reports, 2025
Infiltration dynamics in drainage water accumulation systems on non-paved roads
No full textThe unpaved roads have an importance for the social and economic development of
Brazil, since it serves as the paved roads connection. The erosion caused by water in the bed and
the banks of these roads is one of the main factors for its degradation. Knowing the resistance of
the road to California Bearing Ratio (CBR) and trafficability is the beginning of the behavior
check to not degrade. Associating alternatives to avoid erosion through accumulation basins also
highlights aspects of conservation and environmental preservation. The pilot road is located in
the municipality of Goiânia - GO, having as reference the road GO 462 exit to the municipality
of Nova Veneza. This road is 600 m long, with an average slope of 5%, and has been
topographically mapped every 20 m. The criterion of both unpaved roads and accumulation
basins is the basis of this work. The soil considered is the typical Acridric Red Latosol. From the
identification of the defects caused by the accumulation of water on the runway is important for
decision making. In this case, as the road is docked, it has decided to plunge the cross section
around 4% and associate the accumulation basin. For the dimensioning of these circular basins,
the 6-m diameter and 2.0 m deep program was used for the ESTRADAS program. In the first
treatment the accumulation basin is connected to the road by an open channel of 10 m in length.
In the second, in the canal is planted Batatais grass with length of 10 m. In the third one is used a
pre-basin of 3 m in diameter and 1,5 m of depth connected to the road by an open channel with 5
m of length. The bedroom also has a pre-basin with the same characteristics but with vegetated
canal with Batatais grass of 5 m. The width of the channels is fixed at 0.80m and are set at 20m
by 20m. The road subdivided in study is 5 m wide and 20 m long, totaling 100 m2 of area of
influence for the collection of drainage of rainwater and sediments generated in this road.
Maintaining the infiltration dynamics is another objective of this work. For this, physical
attributes tests were performed before and after the construction of the basins and changes in the
section of the road. The arrival of the sediments in the basins and pre basins significantly alter the
physical attributes of direct interference in the infiltration dynamics or in the hydraulic
conductivity. We simulated the variability of hydraulic conductivity in the laboratory with the
permanent addition of sediments collected from the road, since there was no significant statistical
difference in the field and in the laboratory. The estimation of sediments that reach the pre-basin
was done using the SURFER program. As the hydraulic conductivity was not completely
annulled, the microtomography was used to verify porosity behavior with depth. It was verified
that sealing or inability to infiltrate occurs in successive layers and not only superficially as
hypothesis. The variability of the porosity corroborates this finding. The CBR presented an
average of 38%, enough for the road to be used as sub base, with great resistance. The best
treatment is the pre-basin with vegetated canal, followed by vegetated canal, followed by pre-
basin without vegetated canal, followed by non-vegetated canal. The cost of implementation,
since the project, change of section and opening of the basins and channel was R 1010,00/treatment.As estradas não pavimentadas possuem grande importância para o desenvolvimento social
e econômico do Brasil, uma vez que servem de ligação as estradas pavimentadas. A erosão provocada
pela água no leito e nas margens destas estradas é um dos principais fatores para sua degradação. Para
avaliar utilizou se o método de resistência da estrada quanto a capacidade de suporte de carga (CBR),
associado a trafegabilidade. Para evitar a erosão utilizou se as bacias de acumulação, associado à
aspectos de conservação e a preservação ambiental. A estrada piloto está localizada no município de
Goiânia – GO, tendo como referência a estrada GO 462 saída para o município de Nova Veneza. Essa
estrada apresenta 600 m de comprimento, com declividade média de 5%, tendo sido mapeada
topograficamente de 20 em 20 m. O solo da área é o Latossolo Vermelho Acriférrico típico. Como a
estrada é encaixada, decidiu se chapar a seção transversal em torno de 4% e associar as bacias de
acumulação. Foram construídas 24 bacias, porém 08 bacias apresentaram uniformidade para as
análises. No primeiro tratamento a bacia de acumulação é ligada a estrada por um canal aberto de 10 m
de comprimento. No segundo, no canal é plantado grama Batatais com comprimento de 10 m. No
terceiro é utilizado uma pré bacia de 3 m de diâmetro e 1,5 m de profundidade ligada a estrada por um
canal aberto com 5 m de comprimento. O quarto também tem uma pré bacia com mesmas
características porém com canal vegetado com grama Batatais de 5 m. A largura dos canais é fixa em
0,80m e são colocadas em 20 em 20m da estrada. Para o dimensionamento dessas bacias circulares foi
utilizado o programa ESTRADAS com 6 m de diâmetro e 2,0 m de profundidade. A estrada foi
subdividida com lombada e tem 5 m de largura e 20 m de comprimento, totalizando 100 m2 de área de
influência para a coleta de drenagem das águas pluviais e sedimentos gerados. Para manter a dinâmica
de infiltração foram realizados ensaios dos atributos físicos antes e depois da construção das bacias e a
mudança na seção da estrada. A chegada dos sedimentos nas bacias e pré bacias alteram
significativamente os atributos físicos e interferem direta na dinâmica de infiltração ou ainda na
condutividade hidráulica. Simulou se a variabilidade da condutividade hidráulica em laboratório com a
adição permanente de sedimentos recolhidos da estrada, uma vez que não houve diferença estatística
significativa no campo e no laboratório. Como a condutividade hidráulica não foi totalmente anulada,
utilizou se a microtomografia para verificar o comportamento da porosidade com a profundidade.
Constatou se que o selamento ou a incapacidade de infiltração acontece em camadas sucessivas e não
somente superficialmente como era a hipótese. A variabilidade da porosidade corrobora essa
constatação. O CBR apresentou média de 38%, suficiente para a estrada ser utilizada como sub base,
com ótima resistência. O melhor tratamento é a pré bacia com canal vegetado, seguido de canal
vegetado, seguido de pré bacia sem canal vegetado, seguido de canal não vegetado. O custo de
implantação, desde o projeto, mudança de seção e abertura das bacias e canal foi de R 1010,00 / tratamento
An Algorithm for Mining Implicit Itemset Pairs based on Differences of Correlations
No full textAbstract. Given a transaction database as a global set of transactions and its local database obtained by some conditioning to the global one, we consider a pair of itemsets whose degrees of correlations are higher in the local database than in the global one. A problem of finding paired itemsets with high correlation in one database is known as Discovery of Correlation, and some algorithms to search for such characteristic paired itemsets are already proposed. However, even non-characteristic paired itemsets in the local database are also meaningful, provided the degree of correlation increases much higher in the local database than in the global one. They can be an implicit and hidden evidence showing that something particular to the local database occurs even though they are not yet realized as characteristic ones in the local. From this viewpoint, we have already proposed to measure the significance of paired itemsets by the difference of two correlations before and after the conditioning to the local database, and define a notion of DC pairs whose degrees of differences of correlations are high. As DC pairs are regarded as compound itemsets consisting of two component itemsets, we can have two basic strategies for finding them. One strategy firstly examines the compound itemsets and then the components, while another one does the component itemsets and then the compound ones. According to the former strategy, which we have already proposed and tested for its effectiveness, we have to enumerate many number of candidate compound itemsets that cannot be decomposable to components. For this reason, this paper presents a new algorithm according to the second strategy. It firstly enumerate possible component itemsets based on a new pruning rule for cutting off useless components. Secondly it forms the compound itemsets by combining the components thus detected, while we also make use of a constraint for preventing our algorithm from checking meaningless combinations.
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