UNISENSE: A Unified and Sustainable Sensing and Transport Architecture for Large Scale and Heterogeneous Sensor Networks

This book contains all refereed papers that were accepted to the first edition of the Asia-Pacific conference on « Complex Systems Design & Management » (CSD&M Asia 2014) that took place in Singapore from December 10 to December 12, 2014 (Website: http://www.2014.csdm-asia.net/). These proceedings cover the most recent trends in the emerging field of Complex Systems, both from an academic and a professional perspective. A special focus is put on Designing Smart cities. The CSD&M Asia 2014 conference is organized under the guidance of the Center of Excellence on Systems Architecture, Management, Economy and Strategy, CESAMES, non-profit organization, address: CESAMES, 8 rue de Hanovre, 75002 Paris, France ( Website : http://www.cesames.net/en)

Nitrogen-Functionalized Graphene Nanoflakes (GNFs:N): Tunable Photoluminescence and Electronic Structures

This study investigates the strong photoluminescence (PL) and X-ray excited optical luminescence observed in nitrogen-functionalized 2D graphene nanoflakes (GNFs:N), which arise from the significantly enhanced density of states in the region of {\pi} states and the gap between {\pi} and {\pi}* states. The increase in the number of the sp2 clusters in the form of pyridine-like N-C, graphite-N-like, and the C=O bonding and the resonant energy transfer from the N and O atoms to the sp2 clusters were found to be responsible for the blue shift and the enhancement of the main PL emission feature. The enhanced PL is strongly related to the induced changes of the electronic structures and bonding properties, which were revealed by the X-ray absorption near-edge structure, X-ray emission spectroscopy, and resonance inelastic X-ray scattering. The study demonstrates that PL emission can be tailored through appropriate tuning of the nitrogen and oxygen contents in GNFs and pave the way for new optoelectronic devices.Comment: 8 pages, 6 figures (including toc figure

Identification and analysis of seven H2O2-responsive miRNAs and 32 new miRNAs in the seedlings of rice (Oryza sativa L. ssp. indica)

Plant microRNAs (miRNAs) have been shown to play critical roles in regulating gene expression at the post-transcriptional level. In this study, we employed high throughput sequencing combined with computational analysis to survey miRNAomes from the seedlings of rice under normal conditions and treatments of H2O2 that result in oxidative stress. Comparison of the miRNAomes and subsequent northern blot analysis identified seven miRNA families differentially expressed under H2O2 stress. Predicted and experimentally validated targets of these H2O2-responsive miRNAs are involved in different cellular responses and metabolic processes including transcriptional regulation, nutrient transport, auxin homeostasis, cell proliferation and programmed cell death. This indicates that diverse miRNAs form a complex regulatory network to coordinate plants’ responses under oxidative stress. In addition, we also discovered 32 new miRNAs in the seedlings of rice. Interestingly, of these new miRNAs, miR3981 was originally found to be a putative exonic miRNA located in the exon of AK106348, suggesting that plants may also use some exons as an miRNA source. This study is the first genome-wide investigation of H2O2-regulated miRNAs in plants and broadens our perspectives on the important regulatory roles of miRNAs in plant oxidative stress and physiological adaption

Forecasting the size distribution of a population of savings accounts: a Markovian approach

Distinguished Alumni Award Program author. Professor Lui Pao Chuen (Presented 29 Mar 02). NPS Hall of Fame author (Presented 28 March 2002)The Markov chain model, with extensions to cover the phenomena of arrivals and departures, was applied to a population of savings accounts, in a savings institution, to forecast the size distribution, total number of accounts and total amount of savings of the population. The stochastic processes governing the behavior of the population were first assumed to be time stationary. This assumption was then relaxed and an econometric model was used to predict future values of the parameters of the non-stationary model. Both models were validated by comparing predicted size distributions, total number of accounts and total amount of savings against observed values. The chi square goodness of fit test was used in the comparison. The fundamental matrix of the stationary model was also used to predict the equilibrium distribution and related measures of the populationhttp://archive.org/details/forecastingsized00luipMajor, Singapore Armed ForcesApproved for public release; distribution is unlimited

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2nd Asia-Pacific Conference on Complex Systems Design & Management

This book contains all refereed papers that were accepted to the second edition of the Asia-Pacific conference on « Complex Systems Design & Management Asia» (CSD&M Asia 2016) that took place in Singapore from February 24 to February 26, 2016 (Website: http://www.2016.csdm-asia.net/). These proceedings cover the most recent trends in the emerging field of Complex Systems, both from an academic and a professional perspective. A special focus is put on Smart Nations: Designing and Sustaining. The CSD&M Asia 2016 conference is organized under the guidance of the Singapore division of the Center of Excellence on Systems Architecture, Management, Economy and Strategy (CESAMES) – Legal address: C.E.S.A.M.E.S. Singapore – 16 Raffles Quay – #38-03 Hong Leong Building – Singapore 048581 (website : http://www.cesames.net/en – email: [email protected])

On monotone and Schwarz alternating methods for nonlinear elliptic PDEs

The Schwarz alternating method can be used to solve elliptic boundary value problems on domains which consist of two or more overlapping subdomains. The solution is approximated by an infinite sequence of functions which results from solving a sequence of elliptic boundary value problems in each of the subdomains. In this paper, proofs of convergence of some Schwarz alternating methods for nonlinear elliptic problems which are known to have solutions by the monotone method (also known as the method of subsolutions and supersolutions) are given. In particular, an additive Schwarz method for scalar as well as some coupled nonlinear PDEs are shown to converge for finitely many subdomains. These results are applicable to several models in population biology