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  1. Article

    Open Access

    Postloading insulinemia is independently associated with arterial stiffness in young Japanese persons

    Associations of arterial stiffness with glucose, insulin, and proinsulin dynamics during the oral glucose tolerance test (OGTT) remain under debate. The aim of this study was to investigate whether plasma gluc...

    Norimitsu Murai, Naoko Saito, Sayuri Nii, Yuto Nishikawa in Hypertension Research (2021)

  2. Article

    Open Access

    Comparison of dimension reduction methods on fatty acids food source study

    Serum fatty acids (FAs) exist in the four lipid fractions of triglycerides (TGs), phospholipids (PLs), cholesteryl esters (CEs) and free fatty acids (FFAs). Total fatty acids (TFAs) indicate the sum of FAs in ...

    Yifan Chen, Yusuke Miura, Toshihiro Sakurai, Zhen Chen in Scientific Reports (2021)

  3. No Access

    Article

    Principal Component Clustered Factors for Determining Study Performance in Computer Programming Class

    Studying computer programming requires not only an understanding of theories and concepts, but also coding pragmatism. Success in studying or conducting such a course is definitely a challenge. This paper prop...

    Unhawa Ninrutsirikun, Hideyuki Imai, Bunthit Watanapa in Wireless Personal Communications (2020)

  4. No Access

    Article

    Factors involved in body weight loss and its maintenance in morbidly obese inpatients

    Body weight loss in patients with obesity improves abnormal glucose tolerance, dyslipidemia and hypertension; however, it is difficult to maintain this loss of body weight. The objective of this study was to e...

    Rie Tadokoro, Tatsuya Iida, Kentaro Mikura, Hideyuki Imai in Diabetology International (2020)

  5. No Access

    Article

    Determination of Serum 25-Hydroxyvitamin D3 by LC/MS/MS and Its Monthly Variation in Sapporo Indoor Workers

    25-Hydroxyvitamin D3 (25(OH)D3) as the metabolite of vitamin D, is connected with various of diseases, and important to people with limited sunshine. Thus, the investigation of serum 25-hydroxyvitamin D and its v...

    Hiroaki Okabe, Chikara Shimizu, Maiko Yamamoto, Rei Kikuchi in Analytical Sciences (2018)

  6. Article

    Open Access

    A resected case of two branch duct-type intraductal papillary mucinous neoplasms showing different clinical courses after a two-year follow-up

    The patient was a 60-year-old man without any particular complaints, but he underwent abdominal computed tomography (CT) and magnetic resonance cholangiopancreatography (MRCP) due to a fatty liver, which revea...

    Hideki Shibata, Nobuyuki Ohike, Tomoko Norose in Clinical Journal of Gastroenterology (2017)

  7. No Access

    Chapter and Conference Paper

    Online EM for the Normalized Gaussian Network with Weight-Time-Dependent Updates

    In this paper, we propose a weight-time-dependent (WTD) update approach for an online EM algorithm applied to the Normalized Gaussian network (NGnet). WTD aims to improve a recently proposed weight-dependent (...

    Jana Backhus, Ichigaku Takigawa, Hideyuki Imai in Neural Information Processing (2016)

  8. No Access

    Chapter and Conference Paper

    Reducing Redundancy with Unit Merging for Self-constructive Normalized Gaussian Networks

    In this paper, a Normalized Gaussian Network (NGnet) is introduced for online sequential learning that uses unit manipulation mechanisms to build the network model self-constructively. Several unit manipulatio...

    Jana Backhus, Ichigaku Takigawa in Artificial Neural Networks and Machine Lea… (2016)

  9. Chapter and Conference Paper

    Analyses on Generalization Error of Ensemble Kernel Regressors

    Kernel-based learning is widely known as a powerful tool for various fields of information science such as pattern recognition and regression estimation. For the last few decades, a combination of different le...

    Akira Tanaka, Ichigaku Takigawa in Structural, Syntactic, and Statistical Pat… (2014)

  10. No Access

    Article

    Genetically structured population and demographic history of the goldlined spinefoot Siganus guttatus in the northwestern Pacific

    Sequence variation of the mitochondrial DNA was analyzed to examine the genetic structure and demographic history of the goldlined spinefoot Siganus guttatus in the northwestern Pacific. In total, 451 nucleotide ...

    Kensuke Iwamoto, Chih-Wei Chang, Akihiro Takemura, Hideyuki Imai in Fisheries Science (2012)

  11. Chapter and Conference Paper

    Extended Analyses for an Optimal Kernel in a Class of Kernels with an Invariant Metric

    Learning based on kernel machines is widely known as a powerful tool for various fields of information science such as pattern recognition and regression estimation. An appropriate model selection is required ...

    Akira Tanaka, Ichigaku Takigawa in Structural, Syntactic, and Statistical Pat… (2012)

  12. No Access

    Article

    Biological traits of naturally induced hybrid individuals of two gizzard shads, Nematalosa come and N. japonica, in coastal waters around Okinawa Island, Ryukyu Archipelago, southwestern Japan

    The age, growth, reproductive condition, and occurrence of natural hybrids of two Nematalosa species around Okinawa Island were examined using 128 specimens obtained from April 2003 to June 2004. Standard length ...

    Masato Uehara, Fumi Kashiwagi, Hideyuki Imai in Ichthyological Research (2011)

  13. Chapter and Conference Paper

    Observation Research of Consumer Behavior for Marketing Decision Support

    The purpose of this paper is to reveal a complaint and needs, insight from a practical way of observation such as brushing teeth. In our observation treated extreme users who will be likely to have the power o...

    Hideyuki Imai, Noriko Hara, Toshiki Yamaoka in HCI International 2011 – Posters’ Extended… (2011)

  14. No Access

    Chapter and Conference Paper

    On a Fuzzy Weights Representation for Inner Dependence AHP

    The AHP (Analytic Hierarchy Process) has been widely used in decision making. Inner dependence method AHP is one technique for the case in which criteria do not have enough independency. However using original...

    Shin-ichi Ohnishi, Takahiro Yamanoi in Information Processing and Management of U… (2010)

  15. No Access

    Article

    Age and growth of two gizzard shads, Nematalosa come and N. japonica, in coastal waters around Okinawa Island, southwestern Japan

    The age and growth of two Nematalosa species around Okinawa Island were examined using sectioned otoliths collected from September 2003 to April 2006. Monthly changes in the frequency of the appearance of a trans...

    Masato Uehara, Hideyuki Imai, Katsunori Tachihara in Fisheries Science (2009)

  16. No Access

    Article

    Genetic and morphological evidence of hybridization between Nematalosa japonica and N. come (Clupeiformes: Clupeidae) off Okinawa Island, Ryukyu Archipelago, Japan

    Two morphologically similar species of gizzard shad, Nematalosa japonica Regan and N. come (Richardson), sympatrically distributed off Okinawa Island, Japan, were examined using an allozyme locus (SOD*) and two n...

    Hideyuki Imai, Fumi Kashiwagi, **-Hua Cheng, Tzyy-Ing Chen in Fisheries Science (2009)

  17. No Access

    Article

    Molecular ecological study of Siganus spinus and S. guttatus from Okinawan waters based on mitochondrial DNA control region sequences

    The mitochondrial DNA (mtDNA) control region was sequenced to examine the genetic variability and gene flow of juvenile Siganus spinus and S. guttatus. In total, 461 nucleotide sequences were obtained from 69 spe...

    Kensuke Iwamoto, Akihiro Takemura, Tetsuo Yoshino, Hideyuki Imai in Journal of Oceanography (2009)

  18. No Access

    Chapter and Conference Paper

    A Fast Nearest Neighbor Method Using Empirical Marginal Distribution

    Unfortunately there is no essentially faster algorithm than the brute-force algorithm for the nearest neighbor searching in high-dimensional space. The most promising way is to find an approximate nearest neig...

    Mineichi Kudo, Jun Toyama, Hideyuki Imai in Knowledge-Based and Intelligent Informatio… (2009)

  19. No Access

    Chapter and Conference Paper

    Effects of Kurtosis for the Error Rate Estimators Using Resampling Methods in Two Class Discrimination

    In preceding studies, error rate estimators have been compared under various conditions and in most cases the population distribution was assumed to be normal. Effects of non-normality of the population have t...

    Kozo Yamada, Hirohito Sakurai, Hideyuki Imai in Knowledge-Based and Intelligent Informatio… (2009)

  20. No Access

    Article

    Low genetic variability in an endangered population of fiddler crab Uca arcuata on Okinawajima Island: analysis of mitochondrial DNA

    Restriction fragment length polymorphism analysis was performed on polymerase chain reaction-amplified DNA fragments containing the D-loop, ND2, and CO I genes of fiddler crab Uca arcuata mitochondrial DNA. In to...

    Misuzu Aoki, Tohru Naruse, **-Hua Cheng, Yasunari Suzuki in Fisheries Science (2008)

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