Satoshi Fujita

A New Caching Technique to Support Conjunctive Queries in P2P DHT (2008)

KOBATAKE, Koji, TAGASHIRA, Shigeaki, FUJITA, Satoshi

P2P DHT (Peer-to-Peer Distributed Hash Table) is one of typical techniques for realizing an efficient management of shared resources distributed over a network and a keyword search over such networks...

An Efficient Scheduling Scheme for Assigning Transmission Opportunity in QoS-Guaranteed Wireless LAN (2008)

TAGASHIRA, Shigeaki, YAMANE, Masahiro, FUJITA, Satoshi

The IEEE 802.11e standard defines several important techniques that guarantee the quality of service (QoS) of multimedia communications in wireless LAN applications. A key technique introduced in the...

Maintaining a Dynamic Set of Processors in a Distributed System (2007)

Satoshi Fujita, Masafumi Yamashita

. Consider a distributed system consisting of a set V of processors, and assume that every pair of processors can directly communicate with each other. A processor structure is proposed, for...

A Fault-Tolerant Content Addressable Network (2006)

TAKEMOTO, Daisuke, TAGASHIRA, Shigeaki, FUJITA, Satoshi

In this paper, we propose a new method to enhance the fault-tolerance of the Content Addressable Network (CAN), which is known as a typical pure P2P system based on the notion of Distributed Hash...

A Generic Solver Based on Functional Parallelism for Solving Combinatorial Optimization Problems (2006)

TAGASHIRA, Shigeaki, MITO, Masaya, FUJITA, Satoshi

This paper proposes a new class of parallel branch-and-bound (B&B) schemes. The main idea of the scheme is to focus on the functional parallelism instead of conventional data parallelism, and to...

A Localization Scheme for Sensor Networks Based on Wireless Communication with Anchor Groups (2006)

OCHI, Hiroyuki, TAGASHIRA, Shigeaki, FUJITA, Satoshi

In this paper, we propose a new localization scheme for wireless sensor networks consisting of a huge number of sensor nodes equipped with simple wireless communication devices such as wireless LAN...

Proxy-Based Index Caching for Content-Addressable Networks (2006)

TAGASHIRA, Shigeaki, SHIRAKAWA, Syuhei, FUJITA, Satoshi

Content-Addressable Network (CAN) provides a mechanism that could retrieve objects in a P2P network by maintaining indices to those objects in a fully decentralized manner. In the CAN system, index...

CHQ: A Multi-Agent Reinforcement Learning Scheme for Partially Observable Markov Decision Processes (2005)

OSADA, Hiroshi, FUJITA, Satoshi

In this paper, we propose a new reinforcement learning scheme called CHQ that could efficiently acquire appropriate policies under partially observable Markov decision processes (POMDP) involving...

A novel approach to selection of functional proteins (2001)

Zhou, Jing-Min, Fujita, Satoshi, Warashina, Masaki, Sawata, Shinya Y., Baba, Tadashi, Taira, Kazunari

We present here a novel approach to connect phenotype and genotype in vitro by exploiting a strong interaction between RNA and protein. This strong interaction was used for the selection of...

A Simple, Two-Color Fluorescence Detection Method for Membrane Blotting Analysis Using Alkaline Phosphatase and Horseradish Peroxidase (1998)

Kondoh, Yasumitsu, Fujita, Satoshi, Kagiyama, Naoto, Yoshida, Michihiro C.

We have developed a one-step, two-color fluorescence detection method using simultaneously two fluorogenic substrates for both Southern and Western blots on nylon membranes. For this enzyme-mediated...

Comparison of In Vivo Activities of 5'-Connected and 3'-Connected cis-Acting Ribozymes: Selection of Intracellularly Active Ribozymes Using the Gene for Dihydrofolate Reductase (DHFR) as a Selective Marker in Escherichia coli (1998)

Hamada, Makiko, Fujita, Satoshi, Kise, Hideo, Jigami, Yoshifumi, Taira, Kazunari

If ribozymes are to be exploited in vivo, it is necessary to select ribozymes that are functional in the intracellular environment. Ribozymes selected in the intracellular environment should retain...

Effects of vasodilators and perfusion pressure on coronary flow and simultaneous release of nitric oxide from guinea pig isolated hearts (1998)

Fujita, Satoshi, Roerig, David L, Bosnjak, Zeljko J, Stowe, David F

Objective: The aims were to validate the use of a direct reading NO electrode, to compare the effects of diverse acting drugs on altering coronary flow (CF) and NO release, and to examine the effects...

Neighbourhood Gossiping In Hypercubes (1997)

Satoshi Fujita, Stephane Perennes, Joseph G. Peters

In the neighbourhood gossiping problem, each node of a network starts with a unique message and must learn the messages of all of its neighbours. In this paper, we prove upper and lower bounds for...

Ae, T.: A Distributed k-Mutual Exclusion Algorithm using k-Coterie (1994)

Hirotsugu Kakugawa, Satoshi Fujita, Masafumi Yamashita, Tadashi Ae

The concept of k-coterie is introduced and a distributed k-mutual exclusion algorithm is proposed using it. A k-coterie is a natural extension of a coterie. The message complexity of the algorithm is...

Discrimination of a single base change in a ribozyme using the gene for dihydrofolate reductase as a selective marker in Escherichia coli

Fujita, Satoshi, Koguma, Tetsuhiko, Ohkawa, Jun, Mori, Kazuyuki, Kohda, Takeo, Kise, Hideo, ...

For use of ribozymes in vivo, it is desirable to select functional ribozymes in the cellular environment (in the presence of inhibitory factors and limited concentrations of mandatory Mg2+ ions,...

Discrimination of a single base change in a ribozyme using the gene for dihydrofolate reductase as a selective marker in Escherichia coli

Fujita, Satoshi, Koguma, Tetsuhiko, Ohkawa, Jun, Mori, Kazuyuki, Kohda, Takeo, Kise, Hideo, ...

For use of ribozymes in vivo, it is desirable to select functional ribozymes in the cellular environment (in the presence of inhibitory factors and limited concentrations of mandatory Mg2+ ions,...

Resistance exercise increases AMPK activity and reduces 4E-BP1 phosphorylation and protein synthesis in human skeletal muscle

Dreyer, Hans C, Fujita, Satoshi, Cadenas, Jerson G, Chinkes, David L, Volpi, Elena, Rasmussen, Blake B

Resistance exercise is a potent stimulator of muscle protein synthesis and muscle cell growth, with the increase in protein synthesis being detected within 2–3 h post-exercise and remaining...

Nutrient signalling in the regulation of human muscle protein synthesis

Fujita, Satoshi, Dreyer, Hans C, Drummond, Micah J, Glynn, Erin L, Cadenas, Jerson G, Yoshizawa, Fumiaki, ...

The mammalian target of rapamycin (mTOR) and AMP-activated protein kinase (AMPK) are important nutrient- and energy-sensing and signalling proteins in skeletal muscle. AMPK activation decreases...

Time-lapse observation of cell alignment on nanogrooved patterns

Fujita, Satoshi, Ohshima, Masahiro, Iwata, Hiroo

Cells elongate on a surface with nanogrooved (NG) patterns and align along that pattern. Although various models have been proposed for how this occurs, much remains to be clarified. Studies with...