Search results for: K. Shimatani

Items from 1 to 15 out of 15 results

article

Genet dynamics and its variation among genets of a clonal plant Convallaria keiskei

Kiwako S. Araki, Ichiro K. Shimatani, Masashi Ohara

Oikos > 2023 > 4 > n/a - n/a

In clonal plant populations, a number of genetically identical ramets form a genet. While coexisting ramets potentially perform independently, their behaviours not only depend on ages and sizes but are also constrained by genetic background. In this study, genet dynamics and its variability among neighbouring genets were investigated based on the ramet demography of each genet in Convallaria keiskei...

article

A new method for early detection of infants at risk of long-term neuromotor disabilities

E. Maggi, M. Impagliazzo, A. Minnella, N. Zanardi, more

Gait & Posture > 2017 > 57 > S3 > 23-24

article

Immunosuppression Modification by Everolimus With Minimization of Calcineurin Inhibitors Recovers Kidney Graft Function Even in Patients With Very Late Conversion and Also With Poor Graft Function

M. Nojima, Y. Yamada, Y. Higuchi, K. Shimatani, more

Transplantation Proceedings > 2017 > 49 > 1 > 41-44

Although kidney graft survival within 5 years after transplantation is now achieved in >95% of recipients, chronic graft deterioration remains a factor limiting long-term survival. Chronic nephrotoxicity induced by calcineurin inhibitors (CNIs) is one of the major causes of chronic graft injury; thus, minimization of CNIs by administration of everolimus (EVR) is expected to relieve their toxic...

article

The use of a floating balloon as a walking aid for children

K. Shimatani, K. Shima, P. Giannoni, P. Moretti, more

Physiotherapy > 2015 > 101 > S1 > e1388-e1389

article

Effect of position during activities of daily living on the efficacy of pelvic floor muscle exercises and sensation of contraction

Y. Itabashi, K. Shimatani, W. Tsumiyama, H. Fujii, more

Physiotherapy > 2015 > 101 > S1 > e657

article

Change over time of infants’ movements based on motion analysis: comparison with changes in general movements and the body sway

K. Shimatani, T. Shibanoki, K. Shima, Y. Kurita, more

Physiotherapy > 2015 > 101 > S1 > e1388

article

Spatial analyses for nonoverlapping objects with size variations and their application to coral communities

Soyoka Muko, Ichiro K. Shimatani, Yoko Nozawa, Bryan Manly

Journal of Animal Ecology > 83 > 4 > 980 - 990

Spatial distributions of individuals are conventionally analysed by representing objects as dimensionless points, in which spatial statistics are based on centre‐to‐centre distances.However, if organisms expand without overlapping and show size variations, such as is the case for encrusting corals, interobject spacing is crucial for spatial associations where interactions occur.We introduced new pairwise...

article

The spatio‐temporal forest patch dynamics inferred from the fine‐scale synchronicity in growth chronology

Ichiro K. Shimatani, Yasuhiro Kubota

Journal of Vegetation Science > 22 > 2 > 334 - 345

Question: Abrupt increments in tree radial growth chronology are associated with gap formations derived from disturbances. If a forest has been primarily controlled by fine‐scale disturbances such as single tree‐fall, do these release events spatio‐temporally synchronize at a fine scale such as 10 m and 5 years? Is it possible to quantify spatio‐temporal patterns of synchronicity from tree rings...

article

Spatially explicit neutral models for population genetics and community ecology: Extensions of the Neyman–Scott clustering process

Ichiro K. Shimatani

Theoretical Population Biology > 2010 > 77 > 1 > 32-41

Spatially explicit models relating to plant populations have developed little since Felsenstein (1975) pointed out that if limited seed dispersal causes clustering of individuals, such models cannot reach an equilibrium. This paper aims to resolve this issue by modifying the Neyman–Scott cluster point process. The new point processes are dynamic models with random immigration, and the continuous increase...

chapter

A decomposition method for optimal firing sequence problems for first-order hybrid Petri nets

T. Nishi, K. Shimatani, M. Inuiguchi

2009 IEEE International Conference on Systems, Man and Cybernetics > 2854 - 2859

2009 IEEE International Conference on Systems, Man and Cybernetics. SMC 2009

In this paper, we propose a general decomposition method for transition firing sequence problems for first order hybrid Petri nets. The optimal transition firing sequence problem for first-order hybrid Petri nets is formulated as a mixed integer programming problem. We propose a Lagrangian relaxation method for solving optimal transition firing sequence problems. The hybrid Petri net is decomposed...

chapter

Lagrangian relaxation approach for solving optimal firing sequence problems by decomposition of timed Petri Nets

T. Nishi, K. Shimatani, M. Inuiguchi

2008 SICE Annual Conference > 1585 - 1590

SICE 2008 - 47th Annual Conference of the Society of Instrument and Control Engineers of Japan

In this paper, we propose a Lagrangian decomposition and coordination method for solving scheduling problems by the decomposition of timed Petri nets. The timed Petri net is decomposed into several subnets so that the subproblem for each subnet can be easily solved. The state space analysis is utilized to determine the decomposition strategy for timed Petri nets. The Lagrangian decomposition and coordination...

chapter

A new microwave-excited plasma source using an internal dielectric microwave applicator

K. Shimatani, Y. Tsugami, I.P. Ganachev

2006 Asia-Pacific Microwave Conference > 1919 - 1922

2006 Asia Pacific Microwave Conference

Microwave plasma is widely used for plasma processing, especially plasma chemistry and chemical dry etching. Its main advantages are operation at wide pressure ranges, low plasma potentials, absence of high-energy ion flax at the substrate and chamber walls, relatively small damage at the processed surface and clean plasma environment provided by the absence of extensive wall abrasion. However, standing-wave...

article

Light-emitting diodes fabricated from biomolecular compounds

H. Tajima, K. Shimatani, T. Komino, S. Ikeda, more

Colloids and Surfaces A: Physicochemical and Engineering Aspects > 2006 > 284-285 > Complete > 61-65

We fabricated ITO/biomolecule/Al junctions using chrolophyll a, cytochrome c, myoglobin, hemin, Vitamin B ₁₂ . All the junctions worked as organic light-emitting diode (OLED). The quantum efficiencies of the fabricated OLED were of the order of 1×10 ⁻⁷ around V=10V, and did not seriously depend on whether or not a compound exhibits photoluminescence. Based on the energy diagram of...

article

Light-emitting diodes fabricated from cytochrome c and myoglobin

H. Tajima, S. Ikeda, K. Shimatani, M. Matsuda, more

Synthetic Metals > 2005 > 153 > 1-3 > 29-32

We have fabricated ITO-insulator-Al junctions using cytochrome c and myoglobin as insulating layers. The junctions act as light-emitting diodes. The electro-luminescence (EL) spectra of these diodes exhibit broad peaks around 530 and 700nm, and a weak shoulder around 410nm. These features are consistent with the absorption spectra. Although the reproducibility of the data is quite poor for the current...

article

Control of stripes/superconductivity competition in (La,Eu,Sr)2CuO4 crystals using uniaxial pressure

T. Sasagawa, Suryadijaya, K. Shimatani, H. Takagi

Physica B: Physics of Condensed Matter > 2005 > 359-361 > Complete > 436-438

Uniaxial pressure effects on Tc with and without a static-stripe instability were examined in (La,Eu,Sr)2CuO4 crystals. The in-plane (out-of-plane) pressure increases (decreases) Tc in both cases, but in a different rate. In the presence of static stripes, the Tc-enhancement with the [110]-axis pressure is greater than that with the [100] pressure, giving rise to a novel anisotropy in the in-plane...

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