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Genetic Polymorphism of Plasma Vitamin D-Binding Protein (Gc) in Some Asian Sheep
Tsunoda, K.,Doge, K.,Hasnath, M.A.,Rajbhandary, H.B.,Xu, W.,Zhanchiv, T.,Chau, B.L. Asian Australasian Association of Animal Productio 1998 Animal Bioscience Vol.11 No.3
Using polyacrylamide-gel isoelectric focusing followed by immunoblotting, genetic polymorphism of plasma vitamin D-binding protein (Gc) was examined in Asian sheep. The Gc polymorphism was revealed in the Khalkhas sheep of Mongolia, consisting of F, S and W variants, and the Yunnan native sheep of China, consisting of F and S variants. In particular, W was a new variant. The V variant detected in European sheep up to now was not observed in these sheep. The Bhyanglung, Baruwal, Kagi and Lampuchhre sheep of Nepal and local sheep of Bangladesh and Vietnam were monomorphic for the S variant. Family data and population genetic data supported the hypothesis that these variants were controlled by codominant alleles. In these Asian sheep, distribution of the $Gc^s$ allele was predominant (0.9571-1) and was seen as well in European sheep (Suffolk, Corriedale, Cheviot and Finnish Landrace) raised in Japan. $Gc^w$ allele was detected only in the Khalkhas sheep with the low frequency of 0.0025. The $Gc^v$ allele was detected in the Suffolk and Corriedale sheep (0.0080 and 0.0682), but not in any of the Asian sheep studied.
A proposal of TCP congestion control for LEO Satellite Network taking into account handover problem
Tsunoda, Hiroshi,Ohta, Kohei,Kato, Nei,Nemoto, Yoshiaki 통신위성우주산업연구회 2000 Joint Conference on Satellite Communications Vol.2000 No.-
Recently, much research attention has been focused on LEO satellite networks connected to ISL(Inter Satellite Link). A global network, covering the whole earth, can be developed if wireless and wired networks are seamlessly connected by TCP/IP protocol. However, being originally designed for wired networks, the implementation of TCP/IP on LEO satellite networks may give rise to some difficulties, such as dynamic propagation delay caused by handover and re-routing. In this paper, we propose enhanced TCP congestion control mechanism for LEO satellite network. Our proposal aims to attenuate handover problem with the use of IP header's TTL field. Our simulation results show how effective our mechanism is avoiding unnecessary fast retransmit and decreasing congestion.
Development of a WLAN Based Monitoring System for Group Activity Measurement in Real-Time
Tsunoda, Hiroshi,Nakayama, Hidehisa,Ohta, Kohei,Suzuki, Akihiro,Nishiyama, Hiroki,Nagatomi, Ryoichi,Hashimoto, Kazuo,Waizumi, Yuji,Keeni, Glenn Mansfield,Nemoto, Yoshiaki The Korea Institute of Information and Commucation 2011 Journal of communications and networks Vol.13 No.2
In recent years, there has been a rise in epidemiological evidence suggesting the health benefits of a physically active lifestyle. However, it is not always easy for individuals to personally recognize the optimal conditions for exercise and physical activity. Wearable acceleration-based pedometers have become widely used in estimating the amount of physical activity, and to a limited extent, providing information regarding exercise intensity, but they have never been used to assess adaptation to exercise. In order to realize simultaneous activity monitoring for multiple users exercising outdoors, we developed a prototype wireless local area network (WLAN) based system. In our system, a WLAN is deployed outside, and a user wearing a smart phone and monitoring device exercises freely within the coverage area of the wireless network. By doing so, the developed system is able to monitor the activity of each user andmeasures various parameters including those related to exercise adaptation. In a demonstration experiment, the developed system was evaluated and used to monitor users enjoying a Nordic walk, after which users were immediately able to receive their exercise report. In this paper, we discuss the requirements and issues in developing an activity monitoring system and report the findings we obtained through the demonstration experiment.
Beyond BI-RADS: Nonmass Abnormalities on Breast Ultrasound
Tsunoda Hiroko,Moon Woo Kyung 대한영상의학회 2024 Korean Journal of Radiology Vol.25 No.2
Abnormalities on breast ultrasound (US) images which do not meet the criteria for masses are referred to as nonmass lesions. These features and outcomes have been investigated in several studies conducted by Asian researchers. However, the term “nonmass” is not included in the American College of Radiology (ACR) Breast Imaging Reporting and Data System (BI-RADS) 5th edition for US. According to the Japan Association of Breast and Thyroid Sonology guidelines, breast lesions are divided into mass and nonmass. US findings of nonmass abnormalities are classified into five subtypes: abnormalities of the ducts, hypoechoic areas in the mammary glands, architectural distortion, multiple small cysts, and echogenic foci without a hypoechoic area. These findings can be benign or malignant; however, focal or segmental distributions and presence of calcifications suggest malignancy. Intraductal, invasive ductal, and lobular carcinomas can present as nonmass abnormalities. For the nonmass concept to be included in the next BI-RADS and be widely accepted in clinical practice, standardized terminologies, an interpretation algorithm, and outcome-based evidence are required for both screening and diagnostic US.
Feasibility of Societal Model for Securing Internet of Things
( Hiroshi Tsunoda ),( Rodrigo Roman ),( Javier Lopez ),( Glenn Mansfield Keeni ) 한국인터넷정보학회 2018 KSII Transactions on Internet and Information Syst Vol.12 No.8
In the Internet of Things (IoT) concept, devices communicate autonomously with applications in the Internet. A significant aspect of IoT that makes it stand apart from present-day networked devices and applications is a) the very large number of devices, produced by diverse makers and used by an even more diverse group of users; b) the applications residing and functioning in what were very private sanctums of life e.g. the car, home, and the people themselves. Since these diverse devices require high-level security, an operational model for an IoT system is required, which has built-in security. We have proposed the societal model as a simple operational model. The basic concept of the model is borrowed from human society - there will be infants, the weak and the handicapped who need to be protected by guardians. This natural security mechanism works very well for IoT networks which seem to have inherently weak security mechanisms. In this paper, we discuss the requirements of the societal model and examine its feasibility by doing a proof-of-concept implementation.
Metrics to Predict Future Modifications and Defects Based on Software Requirements Specifications
Taketo Tsunoda,Hironori Washizaki,Yosiaki Fukazawa,Sakae Inoue,Yoshiiku Hanai,Masanobu Kanazawa 대한전자공학회 2019 IEIE Transactions on Smart Processing & Computing Vol.8 No.3
In software development, the quality of the upstream process greatly affects the quality of the downstream process. However, few studies have applied metrics to estimate quality, controlled the quality quantitatively, or have verified the relationship between specifications and software quality. One reason is that specifications are described in natural language, making it difficult to quantitatively evaluate software metrics, such as complexity. Although high-quality software requirements specifications (SRSs) lead to successful implementation, neither a simple quantitative evaluation nor an effective indicator to predict modification-prone SRSs exists. Herein, the effectiveness of two specification metrics is evaluated (the number of pages and the number of previous modifications) in order to predict software defects and future modifications of SRSs. We confirm that both specification quality measured by specification metrics and software quality measured by the number of defects are related. We also reveal that future modifications are correlated with the size of SRSs.
Masato Tsunoda,Yoshimasa Miura,Hiroyuki Osawa,Tsevelnorov Khurelbaatar,Mio Sakaguchi,Hisashi Fukuda,Alan Kawarai Lefor,Hironori Yamamoto 대한소화기내시경학회 2019 Clinical Endoscopy Vol.52 No.5
A 62-year-old man with a flat early esophageal cancer was referred for endoscopic treatment. White light imaging revealed a pale redlesion, whereas linked color imaging (LCI) and blue laser imaging (BLI) yielded purple and brown images, respectively. Iodine stainingdemonstrated a large unstained area with a homogenous but very weak pink-color sign. This area appeared more clearly as purpleand green on LCI and BLI, respectively; however, a different colored portion was observed at the 4 o’clock position inside the iodineunstainedarea. Histopathology findings of the resected specimen revealed squamous intraepithelial neoplasia at the 4 o’clock positionand an esophageal squamous cell carcinoma in the remaining iodine-unstained area. LCI and BLI combined with iodine stainingproduce characteristic images that overcomes the pink-color sign, reflecting the histological features of a flat esophageal neoplasm. Thisnew method is useful for detailed evaluation of early flat squamous cell neoplasms.