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MEC-IoT-Healthcare: Analysis and Prospects

Computers, Materials & Continua 2023年第6期75卷 6219-6250页

作者： Hongyuan Wang Mohammed Dauwed Imran Khan Nor Samsiah Sani Hasmila Amirah Omar Hirofumi amano Samih M.Mostafa College of Computer Science Guangdong University of Science and TechnologyDongGuan523083China Department of Medical Instrumentation Techniques Engineering Dijlah University CollegeBaghdadIraq Department of Electrical Engineering University of Engineering&TechnologyPeshawar814Pakistan Center for Artificial Intelligence Technology Faculty of Information Science and TechnologyUniversiti Kebangsaan Malaysia43600BangiSelangorMalaysia Research Institute for Information Technology Kyushu UniversityFukuoka819-0395Japan Computer Science-Mathematics Department Faculty of ScienceSouth Valley UniversityQena83523Egypt

Physical sensors,intelligent sensors,and output recommenda-tions are all examples of smart health technology that can be used to monitor patients’health and change their *** health is an Internet-of-Things(IoT)-aware network and sensing infrastructure that provides real-time,intelligent,and ubiquitous healthcare *** of the rapid development of cloud computing,as well as related technologies such as fog computing,smart health research is progressively moving in the right ***,fog computing,IoT sensors,blockchain,privacy and security,and other related technologies have been the focus of smart health research in recent *** the moment,the focus in cloud and smart health research is on how to use the cloud to solve the problem of enormous health data and enhance service performance,including cloud storage,retrieval,and calculation of health big *** article reviews state-of-the-art edge computing methods that has shifted to the collection,transmission,and calculation of health data,which includes various sensors and wearable devices used to collect health data,various wireless sensor technologies,and how to process health data and improve edge performance,among other ***,the typical smart health application cases,blockchain’s application in smart health,and related privacy and security issues were reviewed,as well as future difficulties and potential for smart health *** comparative analysis provides a reference for the the mobile edge computing in healthcare systems.

关键词： IoT mobile-edge computing cloud computing e-health

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Micro-Computed Tomography Provides Accurate Measurement for Cardiac Function in Infarcted Rat Heart

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Open Journal of Medical Imaging 2014年第2期4卷 72-79页

作者： Satoshi Matsushita Mayuko Naito Atsushi amano Department of Cardiovascular Surgery School of Medicine Juntendo University Tokyo Japan

Objective: High resolution image is required for accurate measurement of cardiac function for the analysis of detailed regional function especially in a small animal. Methods: Left ventricular function of rat hearts was measured using micro-computed tomography (micro-CT) with administration of contrast agent in a rat with normal heart as well as rats with mild and severe myocardial infarction (MI). Following the CT acquisition, the hearts were sectioned for pathological evaluation. Results: The volume plot per each disk of the normal heart revealed that contraction force peaked at the middle of the heart. In the heart with mild infarction, the volume plot curve clearly demonstrated that infarction was located only at the apex of the heart, whereas severe infarction was disturbed in larger area. The left ventricular ejection fraction of the normal, mild MI, and severe MI hearts were 68.6%, 40.0%, and 16.4%, respectively. In addition, volume analysis in severe MI demonstrated ventricular dilatation, although that in mild MI did not show any change in the ventricular volume. Histological results were consistent with the CT measurement. Conclusions: Micro-CT provided accurate measurement of cardiac function in rats, which is especially useful for the analysis of small animals with heterogeneous dysfunction of the heart.

关键词： Regional Cardiac Function Small Animal Contrast Agent

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Measuring Dynamic Correlations of Words in Written Texts with an Autocorrelation Function

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Journal of Data Analysis and Information Processing 2019年第2期7卷 46-73页

作者： Hiroshi Ogura Hiromi amano Masato Kondo Department of Information Science Faculty of Arts and Sciences Showa University Fujiyoshida City Yamanashi Japan

In this study, we regard written texts as time series data and try to investigate dynamic correlations of word occurrences by utilizing an autocorrelation function (ACF). After defining appropriate formula for the ACF that is suitable for expressing the dynamic correlations of words, we use the formula to calculate ACFs for frequent words in 12 books. The ACFs obtained can be classified into two groups: One group of ACFs shows dynamic correlations, with these ACFs well described by a modified Kohlrausch-Williams-Watts (KWW) function;the other group of ACFs shows no correlations, with these ACFs fitted by a simple stepdown function. A word having the former ACF is called a Type-I word and a word with the latter ACF is called a Type-II word. It is also shown that the ACFs of Type-II words can be derived theoretically by assuming that the stochastic process governing word occurrence is a homogeneous Poisson point process. Based on the fitting of the ACFs by KWW and stepdown functions, we propose a measure of word importance which expresses the extent to which a word is important in a particular text. The validity of the measure is confirmed by using the Kleinburg’s burst detection algorithm.

关键词： Autocorrelation Function Word Occurrence Kohlrausch-Williams-Watts Function Stochastic Process Poisson Point Process

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Origin of Dynamic Correlations of Words in Written Texts

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Journal of Data Analysis and Information Processing 2019年第4期7卷 228-249页

作者： Hiroshi Ogura Hiromi amano Masato Kondo Department of Information Science Faculty of Arts and Sciences Showa University Fujiyoshida Japan

In a previous study, we introduced dynamical aspects of written texts by regarding serial sentence number from the first to last sentence of a given text as discretized time. Using this definition of a textual timeline, we defined an autocorrelation function (ACF) for word occurrences and demonstrated its utility both for representing dynamic word correlations and for measuring word importance within the text. In this study, we seek a stochastic process governing occurrences of a given word having strong dynamic correlations. This is valuable because words exhibiting strong dynamic correlations play a central role in developing or organizing textual contexts. While seeking this stochastic process, we find that additive binary Markov chain theory is useful for describing strong dynamic word correlations, in the sense that it can reproduce characteristics of autocovariance functions (an unnormalized version of ACFs) observed in actual written texts. Using this theory, we propose a model for time-varying probability that describes the probability of word occurrence in each sentence in a text. The proposed model considers hierarchical document structures such as chapters, sections, subsections, paragraphs, and sentences. Because such a hierarchical structure is common to most documents, our model for occurrence probability of words has a wide range of universality for interpreting dynamic word correlations in actual written texts. The main contributions of this study are, therefore, finding usability of the additive binary Markov chain theory to analyze dynamic correlations in written texts and offering a new model of word occurrence probability in which common hierarchical structure of documents is taken into account.

关键词： Autocorrelation Function Autocovariance Function Word Occurrence Stochastic Process Additive Binary Markov Chain

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Narrow pelvic inlet plane area and obesity as risk factors for anastomotic leakage after intersphincteric resection

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World Journal of Gastrointestinal Surgery 2020年第10期12卷 425-434页

作者： Akira Toyoshima Toshihiro Nishizawa Eiji Sunami Ryuji Akai Takahiro amano Akiyoshi Yamashita Shin Sasaki Takeshi Endo Yoshihiro Moriya Osamu Toyoshima Department of Colorectal Surgery Japanese Red Cross Medical CenterTokyo 150-8935Japan Department of Gastroenterology International University of Health and WelfareNarita HospitalNarita 286-8520Japan Department of Gastroenterology Toyoshima Endoscopy ClinicTokyo 157-0066Japan Department of Surgery The University of KyorinTokyo 113-8655Japan Department of Radiology Japanese Red Cross Medical CenterTokyo 150-8935Japan Tokyo Midtown Clinic Tokyo 107-6206Japan Miki Hospital Iwate 029-4201Japan

BACKGROUND Intersphincteric resection(ISR)has been increasingly used as the ultimate sphincter-preserving procedure in extremely low rectal *** most critical complication of this technique is anastomotic *** incidence rate of anastomotic leakage after ISR has been reported to range from 5.1%to 20%.AIM To investigate risk factors for anastomotic leakage after ISR based on clinicopathological variables and *** This study was conducted at Department of Colorectal Surgery,Japanese Red Cross Medical Center,Tokyo,Japan,with a total of 117 *** enrolled 117 patients with extremely low rectal cancer who underwent laparotomic and laparoscopic ISRs at our *** conducted retrospective univariate and multivariate regression analyses on 33 items to elucidate the risk factors for anastomotic leakage after *** dimensions were measured using threedimensional reconstruction of computed tomography *** optimal cutoff value of the pelvic inlet plane area that predicts anastomotic leakage was determined using a receiver operating characteristic(ROC)*** We observed anastomotic leakage in 10(8.5%)of the 117 *** the multivariate analysis,we identified high body mass index(odds ratio 1.674;95%confidence interval:1.087-2.58;P=0.019)and smaller pelvic inlet plane area(odds ratio 0.998;95%confidence interval:0.997-0.999;P=0.012)as statistically significant risk factors for anastomotic *** to the receiver operating characteristic curves,the optimal cutoff value of the pelvic inlet plane area was 10074 *** pelvic inlet plane area(≤10074 mm2)predicted anastomotic leakage with a sensitivity of 90%,a specificity of 85.9%,and an accuracy of 86.3%.CONCLUSION Narrow pelvic inlet and obesity were independent risk factors for anastomotic leakage after *** leakage after ISR may be predicted from a narrow pelvic inlet plane area(≤10074 mm2).

关键词： Intersphincteric resection Anastomotic leakage Pelvimetry Pelvic dimensions Pelvic inlet plane area Rectal cancer

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Laparoscopic Kasai portoenterostomy can be a standard surgical procedure for treatment of biliary atresia

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World Journal of Gastrointestinal Surgery 2022年第1期14卷 56-63页

作者： Chiyoe Shirota Akinari Hinoki Takahisa Tainaka Wataru Sumida Fumie Kinoshita Kazuki Yokota Satoshi Makita Hizuru amano Yoichi Nakagawa Hiroo Uchida Department of Pediatric Surgery Nagoya University Graduate School of MedicineNagoya 4668550AichiJapan Rare/Intractable Cancer Analysis Research Nagoya University Graduate School of MedicineNagoya 4668550AichiJapan Department of Advanced Medicine Nagoya University HospitalNagoya 466-8560AichiJapan

BACKGROUND Biliary atresia(BA)is a rare pediatric *** To compare the outcomes of laparoscopic portoenterostomy(Lap-PE)with those of laparotomy(Open-PE)at a single *** The surgical outcomes of PE were retrospectively analyzed for patients with a non-correctable type of BA from 2003 to *** Throughout the assessment period,119 patients received PE for BA treatment,including 66 Open-PE and 53 Lap-PE *** the operation duration was longer(medians:for Open-PE,242 min;for Lap-PE,341 min;P80%for both groups for the first half year post surgery,followed by a gradual decrease with time;there were no statistically significant differences in the native liver survival rates for any durations *** Lap-PE could be a standard therapy for BA.

关键词： Laparoscopic Kasai portoenterostomy Biliary atresia Native liver survival Pediatric Liver Transplantation

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Modeling the degradation mechanisms of AlGaN-based UV-C LEDs:from injection efficiency to mid-gap state generation

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Photonics Research 2020年第11期8卷 1786-1791页

作者： F.Piva C.De Santi M.Deki M.Kushimoto H.amano H.Tomozawa N.Shibata G.Meneghesso E.Zanoni M.Meneghini Department of Information Engineering University of PadovaPadovaItaly Institute of Materials and Systems for Sustainability(IMaSS) Nagoya UniversityNagoya 464-8601Japan Nikkiso Giken Co. Ltd.1-5-1 AsahigaokaHakusanIshikawa 924-0004Japan

In this work,we analyze and model the effect of a constant current stress on an ultraviolet light-emitting diode with a nominal wavelength of 285 *** carrying out electrical,optical,spectral,and steady-state photocapacitance(SSPC)analysis during stress,we demonstrate the presence of two different degradation *** first one occurs in the first 1000 min of stress,is ascribed to the decrease in the injection efficiency,and is modeled by considering the defect generation dynamics related to the de-hydrogenation of gallium vacancies,according to a system of three differential equations;the second one occurs after 1000 min of stress and is correlated with the generation of mid-gap defects,for which we have found evidence in the SSPC ***,we detected the presence of deep-level states(at 1.6 eV)and mid-gap states(at 2.15 eV),indicating that stress induces the generation of non-radiative recombination centers.

关键词： AlGaN injection state

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An Optimized Algorithm for CR-MIMO Wireless Networks

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Computers, Materials & Continua 2022年第4期71卷 697-715页

作者： Imran Khan Fahd N.Al-Wesabi Marwa Obayya Anwer Mustafa Hilal Manar Ahmed Hamza Mohammed Rizwanullah Fahad Ahmed Al-Zahrani Hirofumi amano Samih M.Mostafa Department of Electrical Engineering University of Engineering&TechnologyPeshawarPakistan Department of Computer Science King Khalid UniversityMuhayel AseerKSA Department of Biomedical Engineering College of EngineeringPrincess Nourah bint Abdulrahman UniversitySaudi Arabia Department of Computer and Self Development Preparatory Year DeanshipPrince Sattam bin Abdulaziz UniversityAlKharjSaudi Arabia Computer Engineering Department Umm Al-Qura UniversityMecca24381Saudi Arabia Research Institute for Information Technology Kyushu UniversityFukuoka819-0395Japan Computer Science-Mathematics Department Faculty of ScienceSouth Valley UniversityQena83523Egypt

With the rapid development of wireless communication technology,the spectrum resources are increasingly strained which needs optimal *** radio(CR)is one of the key technologies to solve this *** sensing not only includes the precise detection of the communication signal of the primary user(PU),but also the precise identification of its modulation type,which can then determine the a priori information such as the PU’service category,so as to use this information to make the cognitive user(CU)aware to discover and use the idle spectrum more effectively,and improve the spectrum *** sensing is the primary feature and core part of *** sensing algorithms includes energy detection,cyclostationary feature detection,matched filter detection,and so *** energy detection algorithm has a simple structure and does not require prior knowledge of the PU transmitter signal,but it is easily affected by noise and the threshold is not easy to *** combination of multiple-input multiple-output(MIMO)with CR improves the spectral efficiency and multipath fading *** best utilize the PU spectrum while minimizing the overall transmit power,an iterative technique based on semidefinite programming(SDP)and minimum mean squared error(MMSE)is ***,this article proposed a new method for max-min fairness *** compared to existing algorithms,the simulation results show that the proposed algorithms perform better in terms of total transmitted power and signal-tointerference plus noise ratio(SINR).Furthermore,the proposed algorithm effectively improved the system performance in terms of number of iterations,interference temperature threshold and balance SINR level which makes it superior over the conventional schemes.

关键词： Cognitive radio spectrum utilization bandwidth primary user

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Scanning PIV Method and Its Application to the Calorimetry of Ground Source Heat Pump Systems

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Journal of Flow Control, Measurement & Visualization 2018年第1期6卷 48-55页

作者： Shumpei Funatani Shinya amano Tetsuaki Takeda Koji Toriyama Department of Mechanical Engineering University of Yamanashi Kofu Japan

Ground source heat pump (GSHP) systems that use a direct expansion method?are expected to have higher energy-saving performance than conventional air conditioning systems. The heat transfer rate is evaluated by measuring the temperature, humidity, and flow rate at the indoor unit of the GSHP system. However, it is difficult to evaluate the flow rate by measuring the flow velocity distribution at the outlet of the indoor unit. In this study, the Scanning PIV method is proposed to improve the accuracy of the flow rate measured by hot wire anemometers. The flow rates obtained by the hot wire anemometers were 60.6% and 15.2% higher than those from the PIV method during cooling and heating operation, respectively. Compensation formulas are generated using the results of the Scanning PIV method to correct the measurements from the hot wire anemometers. This compensation formula reduced the error generated by the nonuniformity of velocity distribution. It was 60.6% to 2.5% in cooling operation and 15.2% to 0.9% in heating operation, respectively. The compensation formulas were applied to evaluate the performance of a GSHP system, and the result shows that the GSHP system provides improved performance stability compared to traditional air conditioning systems.

关键词： Scanning PIV Calorimetry Geothermal Heat Pump System

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Inhibition of Lon protease by bacterial lipopolisaccharide (LPS) though inhibition of ATPase

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Advances in Bioscience and Biotechnology 2013年第4期4卷 590-598页

作者： Nahoko Sugiyama Noriko Minami Yoshiyuki Ishii Fumio amano Division of Molecular Genetics National Institute of Infectious Diseases Tokyo Japan Laboratory of Biodefense & Regulation Osaka University of Pharmaceutical Sciences Osaka Japan

Lon protease, an ATP-dependent protease in Escherichia coli, degrades abnormal proteins and regulates several important cellular functions. Here we show novel inhibitory effects of lipopolysaccharide (LPS) on Lon protease activities. LPS inhibited the peptidase, protease, and ATPase activities of Lon;and a dose-response study showed that LPS at low doses more effectively inhibited the ATPase activity than the peptidase one, suggesting different susceptibility to LPS of these activities associated with Lon. Structure-activity relationship studies revealed that ReLPS, detoxified LPS, and mono-phosphoryl as well as diphosphoryl lipid A, also showed similar inhibition, suggesting that neither O-antigen polysaccharide nor O-acyl chain, but rather phosphate groups in the lipid A domain, seem to have been responsible for the inhibitory effects. Besides, LPS was co-precipitated with Lon by an anti-Lon antibody, showing the direct binding of LPS to Lon. These results suggest that LPS bound to Lon and inhibited the protease activity of Lon by inhibiting its ATPase activity. These results also seem to be another example of a negatively charged phosphate group in membrane components of Escherichia coli being involved in the regulation of protease activity of Lon through binding to Lon and inhibiting its ATPase activity, as in the case of cardiolipin.

关键词： ATPase Lipid A Lipopolysaccharide (LPS) Lon Protease

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