A5102995644- Algorithms and Data Compression
- Cellular Automata and Applications
- DNA and Biological Computing
- Coding theory and cryptography
- Error Correcting Code Techniques
- graph theory and CDMA systems
- Advanced Wireless Communication Techniques
- semigroups and automata theory
- Advanced Data Compression Techniques
- Cooperative Communication and Network Coding
- Peer-to-Peer Network Technologies
- Urban Transport and Accessibility
- Urban and spatial planning
- ECG Monitoring and Analysis
- Caching and Content Delivery
- Video Coding and Compression Technologies
- Computability, Logic, AI Algorithms
- Cryptography and Data Security
- Internet Traffic Analysis and Secure E-voting
- Transportation Planning and Optimization
- Multimedia Communication and Technology
- Video Analysis and Summarization
- Privacy-Preserving Technologies in Data
- Advanced Data Storage Technologies
- Urban Green Space and Health
Chubu University
2020-2023
Kyoto University
2023
University of Electro-Communications
2013-2022
Tokyo University of Science
2022
Nagoya University
1995-2012
National Institute for Environmental Studies
2012
Gifu University
2009-2012
NEC (Japan)
2002
Kawasaki Hospital
1996
The social-distancing measures implemented as a result of the COVID-19 pandemic have changed socio-economic activities in urban areas. This study analyzes these behavioral changes four Japanese metropolitan areas based on mobility data provided by Google and Apple. results show that regular patterns behavior been significantly disrupted COVID-19, inhibition manifests differently depending upon structure climatic factors.
As urbanization is rapidly progressing worldwide, the cities need to assess their quality of life (QOL) not only check infrastructure but also keep pace with changing citizens' sense values and lifestyles. We propose an integrated method evaluate urban QOL from detailed spatial aspects a city subjective preferences its citizens. In this study, we collected data setting attributes at 500-m mesh scale, that vary based on individual attributes, across five metropolitan areas in Japan. Our...
As the COVID-19 pandemic spreads globally, and its vaccine or drug is yet to be developed, many countries worldwide now resort social distancing policies as effective non-pharmaceutical interventions. However, effectiveness varies from country country, factors responsible for such variations are not known. In this study, preliminary analysis of international comparison behavior changes that accompany conducted using Google Community Mobility Reports, wherein ratios with distance policy in...
Two novel tropoloisoquinoline alkaloids, Pareirubrines A and B, have been isolated as antileukemic substances from Cissampelos pareira (Menispermaceae), together with the same skeleton grandirubrine isoimerubrine. Their structures were elucidated by nuclear magnetic resonance (NMR) studies, their solid state tautomeric forms examined X-ray crystallographic analysis.
In autosomal dominant polycystic kidney disease (ADPKD), renal cyst lesions predominantly arise from collecting ducts (CDs). However, relevant CD models using human cells are lacking. Although previous reports have generated in vitro tubule induced pluripotent stem (hiPSCs), therapeutic drug candidates for ADPKD not been identified. Here, by establishing expansion cultures of hiPSC-derived ureteric bud tip cells, an embryonic precursor that gives rise to CDs, we succeed advancing the...
Renewing feeder transit services is crucial for maximizing the potential of public transport system and advancing toward a decarbonized Bangkok. Herein, we propose smart service using small electric vehicles limited areas (sois) target facilities in central A 1-year proof concept was conducted to verify feasibility effectiveness this assess its deployment as new mobility service. We found that 1) introduction sois can considerably reduce both road congestion levels CO2 emissions owing...
As sustainable transport systems need to secure long-term benefits of users, it is useful compare the social land-use development between cities at different stages based on values local residents. In Asian developing megacities, Mass Rapid Transit (MRT) has recently been developed calm serious traffic congestion an early stage, facing rapid motorisation. On other hand, large in Japan have experienced MRT a late but they improvement system, ageing society. Both are required new quality...
Recent emergence of various multimedia systems requires microprocessors to have features like high-performance, low power dissipation, and signal processing capabilities altogether. The 118MIPS RISC processor presented in this paper has a multiply-adder which is essential for applications. Using pulse register on-demand clock distribution, 100 MHz, 428 mW 32 b with 200 MHz achieved.
Injection of anti-Thy-1 antibody into a rat induces immediate glomerular cell death and subsequent development glomerulonephritis. Whether the in this model is apoptotic has yet to be determined. Recent vivo studies on thymocyte have elucidated that Thy-1 molecule can activate intracellular signaling for apoptosis. This observation prompted us re-examine whether stimulation with provoke apoptosis glomerulus. We found could induce laddered DNA fragmentation isolated glomeruli mesangial cells...
We present a systematic procedure for mapping data sequences into codewords of prefix-synchronized code (PS-code), as well performing the inverse mapping. A PS-code, proposed by Gilbert (1960), belongs to subclass comma-free codes and is useful recover word synchronization when errors have occurred in stream codewords. PS-code defined set with property that each codeword has known sequence prefix, followed coded which this prefix not allowed occur. The largest among all PS-codes same length...
This paper proposes a new on-line antidictionary code with linear time. The proposed algorithm uses subset of which length the elements is at most given fixed length. It proved that time complexity this respect to string Its effectiveness demonstrated by simulation results.
Integer codes are very flexible and can be applied in different modulation schemes. A soft decoding algorithm for integer will introduced. Comparison of symbol error probability (SEP) versus signal-to-noise ratio (SNR) between hard using coded shows us that we obtain at least 2dB coding gain. Also, shall compare our results with trellis (TCM) because their similar schemes complexity.
Lossless data compression via substring enumeration (CSE) has been proposed by Dubé and Beaudoin in 2010. The CSE outputs its encoder called compacted automaton as a codeword, an efficient representation of the is also proposed. In this paper, we prove isomorphism between antidictionary automaton, which coding. Then propose new static coding uses instead antidictionary. Moreover, asymptotic optimality for stationary ergodic source.
Conceptionally the User Datagram Protocol (UDP) should be well-suited for real-time applications, e.g., Voice over IP (VoIP). However, many such Skype, use Transmission Control (TCP) either as a primary protocol or backup when UDP is blocked, despite TCP's flow control-related data delays. This paper proposes technique estimation of application buffer requirements TCP-based applications and amount congestion in TCP streams. We apply this to collected from global network exchanging synthetic...
We propose a new class of single error correcting linear codes suitable for two dimensional hexagonal constellation. The proposed code is subspace ℤ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6n+1</sub> <sup xmlns:xlink="http://www.w3.org/1999/xlink">n</sup> where n length and 6n + 1 prime number. It corrects in the set |±1, ±α , xmlns:xlink="http://www.w3.org/1999/xlink">2n</sup> } α primitive element...
An antidictionary is particularly useful for data compression, and on-line electrocardiogram (ECG) lossless compression algorithms using antidictionaries have been proposed. They work in real-time with constant memory give better ratios than traditional algorithms, while they only deal ECG on a binary alphabet. This paper proposes given finite The proposed algorithm gives not those but also uses less computational space do. Moreover, the real-time. Its effectiveness demonstrated by...
This paper proposes an on-line data compression based on antidictionaries with linear time. The proposed algorithm works using only suffix trees without constructing of antidictionaries, and we prove that the time complexity this is respect to string length. Furthermore, produces tree model antidictionaries. gives efficient probabilistic for entropy codings. Its effectiveness demonstrated by simulation results.
Integer codes correct errors of a given type, which means that for communication channel and modulator we can choose the type (which are most common) then construct integer code capable correcting those errors. A new general construction single (±1) error correctable will be presented. Comparison between multiple over AWGN using QAM scheme
An antidictionary, a set of words that never appear in given string, is useful data structure for source coding as well other fields computer sciences. A fast and memory-efficient algorithm constructing antidictionaries by means suffix array presented. We prove the proposed constructs an antidictionary with linear time space.