IoHT-MBA: An Internet of Healthcare Things (IoHT) platform based on microservice and brokerless architecture

Internet of Thing (IoT), currently, is one of the technology trends that are most interested. IoT can be divided into five main areas including: Health-care, Environmental, Smart city, Commercial and Industrial. The IoHT-MBA Platform is considered the backbone of every IoT architecture, so the optimal design of the IoHT-MBA Platform is essential issue, which should be carefully considered in the different aspects. Although, IoT is applied in multiple domains, however, there are still three main features that are challenge to improve: i) data collection, ii) users, devices management, and iii) remote device control. Today's medical IoT systems, often too focused on the big data or access control aspects of participants, but not focused on collecting data accurately, quickly, and efficiently; power redundancy and system expansion. This is very important for the medical sector - which always prioritizes the availability of data for therapeutic purposes over other aspects. In this paper, we introduce the IoHT Platform for Healthcare environment which is designed by microservice and brokerless architecture, focusing strongly on the three aforementioned characteristics. In addition, our IoHT Platform considers the five other issues including (1) the limited processing capacity of the devices, (2) energy saving for the device, (3) speed and accurate of the data collection, (4) security mechanisms and (5) scalability of the system. Also, in order for the IoHT Platform to be suitable for the field of health monitoring, we also add realtime alerts for the medical team. In the evaluation section, moreover, we describe the evaluation to prove the effectiveness of the proposed IoHT Platform (i.e. the proof-of-concept) in the performance, non-error, and non affected by geographical distance. Finally, a complete code solution is publicized on the authors' GitHub repository to engage further reproducibility and improvement.Web of Science12760159

SIP-MBA: A secure IoT platform with brokerless and micro-service architecture

The Internet of Things is one of the most interesting technology trends today. Devices in the IoT network are often geared towards mobility and compact in size, thus having a rather weak hardware configuration. There are many light weight protocols, tailor-made suitable for limited processing power and low energy consumption, of which MQTT is the typical one. The current MQTT protocol supports three types of quality-of-service (QoS) and the user has to trade-off the security of the packet transmission by transmission rate, bandwidth and energy consumption. The MQTT protocol, however, does not support packet storage mechanisms which means that when the receiver is interrupted, the packet cannot be retrieved. In this paper, we present a broker-less SIP-MBA Platform, designed for micro-service and using gRPC protocol to transmit and receive messages. This design optimizes the transmission rate, power consumption and transmission bandwidth, while still meeting reliability when communicating. Besides, we implement users and things management mechanisms with the aim of improving security issues. Finally, we present the test results by implementing a collect data service via gRPC protocol and comparing it with streaming data by using the MQTT protocol.Web of Science12759358

Antioxidant and in vitro antidiabetic activities of Peperomia pellucida (L.) Kunth extract

Peperomia pellucida (L.) is commonly used as a herbal plant. Its effectiveness in treating inflammatory diseases, digestive disorders, and cancer in tropical and subtropical countries was introduced, especially in field of folk medicine. However, this plant species has not been studied widely in Vietnam, especially for its biological activities. This study was done to determine the antioxidant capacity of P. pellucida by using in vitro and in vivo methods, as well as its inhibitory ability to α-amylase enzyme activity. The total polyphenolic and flavonoid contents of P. pellucida extract were reported to be 359.91±0.77 mg GAE/g and 200.28±1.23 mg QE/g extract, respectively. The results showed the in vitro antioxidant activity of P. pellucida extract in four methods, including DPPH, and ABTS.+, RP and TAC, had EC50 values of 730.34 μg/mL, 84.33 μg/mL, 95.28 μg/mL, respectively, and Abs0.5 value of 114.73 μg/mL. Under H2O2-induced oxidative stress, fruit flies that were raised in the feed medium supplemented with a concentration of 1 mg/mL of P. pellucida extract showed their average survival time, 50% survival time, and 10% survival time at 1.6 times, 1.8 times, and 1.62 times, respectively, higher than those of the control treatment. The ability to inhibit the α-amylase activity in P. pellucida extract was determined with an EC50 value of 115.32±2.65 μg/mL compared with the commercial drug of 18.67±0, 01 μg/mL. The research results showed that P. pellucida is a potential species in the study of natural compounds with antioxidant and antidiabetic activities

<Notes>Rainfed Irrigation and Drought Conditions in Northeast Thailand

この論文は国立情報学研究所の学術雑誌公開支援事業により電子化されました。A model is developed in this paper for the computation of effective rainfall on a daily basis and for defining a drought day with regard to paddy irrigation. Assessments of the adequacy of rain water for irrigation, the drought conditions, and the supplementary water requirements are then made

<Notes>Evapotranspiration of Rice Fields in the Red River Delta

この論文は国立情報学研究所の学術雑誌公開支援事業により電子化されました。The present paper reports the results of several experimental studies on the evapotranspiration of rice for the Spring and October crops carried out during a five-year period (1972-1976) in the Red River Delta of Viet Nam. It was found that the evapotranspiration of rice depends highly upon the growth stages, the amount of fertilizer applied and climatological conditions. However, a linear relationship between rice evapotranspiration and each of the factors : pan evaporation, sunshine duration and atmospheric temperature was significant only for the Spring crop

<Notes>Wet and Dry Analysis for the Cagayan Valley, the Philippines

この論文は国立情報学研究所の学術雑誌公開支援事業により電子化されました。In this first step toward a regional analysis of wet and dry events, the theory of runs is coupled with a multi-site data generation technique in order to serve two purposes. The first one is to define the parameters of the wet and dry events in terms of the runs-characteristics such as the run-length and run-sum, thus placing the wet and dry analysis within the scope of statistical and probabilistic treatment. The multi-site data generation scheme incorporates the inter-dependence (in space and time) between the data at various stations in a region into the analysis. This approach is illustrated by a simulation study using the rainfall data at nine stations in the Cagayan Valley located in the Northern part of Luzon Island of the Philippines. The duration, magnitude and intensity of the wet and dry events are obtained for different demand levels

<Notes>Distribution of Monthly Rainfall in Northeast Thailand

この論文は国立情報学研究所の学術雑誌公開支援事業により電子化されました。The distribution in space and in time of monthly rainfall in Northeast Thailand is investigated in this paper, using daily data at 56 stations, each having at least 20 years of continuous record. It was found that monthly rainfall sequences at all stations in this region have six significant harmonics corresponding to six periods : 12,6,4,3,2.4 and 2 months. At a station, the rainfall sequence in a month can be considered to be independent and can be fitted by the leakage law. Moreover, during the months of April through September, monthly rainfall in the region has a general pattern of increasing values towards the eastern and northeastern sections, while during the months of October to January, it has a general pattern of decreasing values towards these sections. Finally, an assessment of water availability for irrigation is made using the distribution of monthly rainfall and the potential evapotranspiration

<Notes>A Model for the Assessment of Rainfed Agriculture in Thailand

この論文は国立情報学研究所の学術雑誌公開支援事業により電子化されました。A general model consisting of three submodels for daily rainfall generation, daily evapotranspiration estimation, and daily water balance computation, respectively, was developed in this study for the assessment of rainfed agriculture in Thailand. It can be used to obtain the information on important factors related to rainfed agriculture such as the number of stress days with their frequency and period of occurrence, the amount of supplementary water requirement and drainage requirement. Through simulation runs made by shifting assumed planting dates, one may arrive at the most suitable planting period for each crop