IoT-base Generic Intelligent Wireless Sensing Platform for Real-time Data Collection and Distribution Data Analysis

( Yu-cheng Yang ),( Kai-sheng Tseng ),( Xiang-yu Huang ),( Sheng-hao Chen ),( Joe-air Jiang ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1

In this study, a generic intelligent wireless sensing platform with the IoT and wireless transmission technology is established for greenhouse monitoring, which is capable of greenhouse data collection and analysis. The data analyzed by a cloud server would provide important information regarding the efficiency of greenhouse management and cultivation methods. To monitor greenhouse related parameters, an embedded board is placed in a greenhouse as the gateway. Monitoring data and images collected by sensors deployed in the greenhouse are transmitted to the embedded board via an Ethernet or wireless transmission module. The data are eventually sent to a database by wireless AP. The AP connects to the internet by using a 4G USB dongle, which can provide sufficient data transmission speed for real-time data transmission. In wireless hotspots and areas with Wi-Fi, not only can images be transmitted to the cloud, but also can the mobile APP be used to perform remote monitoring, so experimental observations are no longer affected by geographical impacts. Moreover, to ensure the preservation of images and numeric data, the gateway carries a high durability secure digital (SD) memory card to store images and data; if the network encounters some problems, such as unable to connect and a lack of network traffic, the data can be stored in the SD card. Thus, the proposed platform is able to perform heavy information transmission duties and support performing all wireless monitoring tasks. In addition, the analyzed data can be used by agricultural personnel to provide critical cultivation suggestions.

Elevated plasma YKL-40 level is found in the dogs with cancer and is related to poor prognosis

Kai-Chung Cheng,Jih-Jong Lee,Shang-Lin Wang,Chun-Yu Lin,Ching-Tien Tseng,Chen-Si Lin,Albert Taiching Liao 대한수의학회 2019 Journal of Veterinary Science Vol.20 No.5

YKL-40, a secreted glycoprotein, may serve as an autoantigen, which mediates multipleinflammatory diseases and cancers. A high YKL-40 serum level is correlated with metastasisand poor survival in a variety of human cancers. However, the role of YKL-40 in dogs is stillunder evaluation. Herein, we examined the associations between plasma YKL-40 level andYKL-40 autoantibody (YAA) titers with malignancy and prognosis in canine cancer. Plasmalevels of YKL-40 in healthy dogs (n = 20) and in dogs (n = 82) with cancer were evaluatedusing enzyme-linked immunosorbent assay. Our results indicated that plasma YKL-40 levelswere significantly higher (p < 0.01) in dogs with cancer than in healthy dogs. A significantdecrease in the YAA titers was detected in the dogs with cancer when compared with thoseof the healthy dogs (p < 0.05), although the change was not correlated with the YKL-40levels. Among the dogs with cancer, plasma YKL-40 levels in the dogs that later relapsed orhad metastasis were significantly higher than in the dogs with no signs of relapse (p < 0.01)or metastasis (p <0.05). The relapse and metastasis rates were significantly higher in thehigh YKL-40 group (> 180 pg/mL) than in the low YKL-40 group (< 180 pg/mL). The resultsimply that plasma YKL-40 levels might have the potential to be developed as a marker ofmalignancy progression and prognosis in canine cancers.

Decellularized Human Umbilical Artery Exhibits Adequate Endothelialization in Xenogenic Transplantation

Kai Hsia,Tien-Shiang Wang,Chin-Su Liu,Chih-Kuan Su,Chien-Chin Chen,Chang-Ching Yeh,Hsinyu Lee,Chao-Ling Yao,Tsung-Yu Tseng,Shih-Hwa Chiou,Hsu Ma,Chih-Hsun Lin,Jen-Her Lu 한국생물공학회 2023 Biotechnology and Bioprocess Engineering Vol.28 No.3

Decellularized human umbilical arteries (dHUA) is an off-the-shelf graft that can potentially serve as vascular scaffolds in tissue engineering of small-diameter vascular grafts. This research aimed to investigate that dHUA could exhibit adequate endothelialization for a long term in xenogenic transplantation. 13 dHUAs were implanted in rat abdominal aortas up to 90 days. Rats were divided into three groups in terms of survival period: Group 1, one to seven days (n = 6); Group 2, 14 to 30 days (n = 4) and Group 3, 90 days (n = 3). The explants were analyzed by histological, immunohistochemistry and magnetic resonance angiography (MRA) examination. Allograft implantation of 12 decellularized rat abdominal aortas` were processed the same way as the rat in order to make a comparison for survival rates (Group 1, n = 5; Group 2, n = 4; Group 3, n = 3). The results demonstrated that the survival rates of xenograft and allograft implantation were estimated to be 59.2% vs. 58.3% in Group 1, 50.7% vs. 58.3% in Group 2 and 3. Grafts harvested from Group 2 were showed CD31, endothelial nitric oxide synthase expression at intima, and α-smooth muscle actin, CD45, CD68 and CD168 expression at the tunica externa. A layer structure with obvious endothelialization and fiber regeneration/orientation could be inspected from the explants of Group 3. MRA demonstrated the patency of dHUA on day 30 and 90. In conclusion, more than 50% dHUA maintained patency in the xenogenic model till 90 days after surgery. A mature vessel-like functional structure with intact endothelial layer was observed then. This warrants further study in the reinforcement of decellularized vascular scaffolds.

IoT-base Generic Intelligent Wireless Sensing Platform for Real-time Data Collection and Distribution Data Analysis

( Yu-cheng Yang ),( Kai-sheng Tseng ),( Xiang-yu Huang ),( Sheng-hao Chen ),( Joe-air Jiang ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1

In this study, a generic intelligent wireless sensing platform with the IoT and wireless transmission technology is established for greenhouse monitoring, which is capable of greenhouse data collection and analysis. The data analyzed by a cloud server would provide important information regarding the efficiency of greenhouse management and cultivation methods. To monitor greenhouse related parameters, an embedded board is placed in a greenhouse as the gateway. Monitoring data and images collected by sensors deployed in the greenhouse are transmitted to the embedded board via an Ethernet or wireless transmission module. The data are eventually sent to a database by wireless AP. The AP connects to the internet by using a 4G USB dongle, which can provide sufficient data transmission speed for real-time data transmission. In wireless hotspots and areas with Wi-Fi, not only can images be transmitted to the cloud, but also can the mobile APP be used to perform remote monitoring, so experimental observations are no longer affected by geographical impacts. Moreover, to ensure the preservation of images and numeric data, the gateway carries a high durability secure digital (SD) memory card to store images and data; if the network encounters some problems, such as unable to connect and a lack of network traffic, the data can be stored in the SD card. Thus, the proposed platform is able to perform heavy information transmission duties and support performing all wireless monitoring tasks. In addition, the analyzed data can be used by agricultural personnel to provide critical cultivation suggestions.

Computational Representation of Chinese Characters: Comparison Between Singular Value Decomposition and Variational Autoencoder

( Yu-hsiang Tseng ),( Shu-kai Hsieh ) 서울대학교 인지과학연구소 2020 Journal of Cognitive Science Vol.21 No.1

Being a notoriously complex problem, writing is generally decomposed into a series of subtasks: idea generation, expression, revision, etc. Given some goal, the author generates a set of ideas (brainstorming), which he integrates into some skeleton (outline, text plan, outline). This leads to a first draft which is submitted then for revision possibly yielding changes at various levels (content, structure, form). Having made a draft, authors usually revise, edit, and proofread their documents. We confine ourselves here only to academic writing, focusing on sentence production. While there has been quite some work on this topic, most writing assistance has mainly dealt with grammatical errors, editing and proofreading, the goal being the correction of surface-level problems such as typography, spelling, or grammatical errors. We broaden the scope by also including cases where the entire sentence needs to be rewritten in order to express properly all of the information planned. Hence, Sentence-level Revision (SentRev) becomes part of our writing assistance task. Obviously, systems performing well in this task can be of considerable help for inexperienced authors by producing fluent, well-formed sentences based on the user’s drafts. In order to evaluate our SentRev model, we have built a new, freely available crowdsourced evaluation dataset which consists of a set of incomplete sentences produced by nonnative writers paired with final version sentences extracted from published academic papers. We also used this dataset to establish baseline performance on SentRev.

Enhanced Phase Relaxation in a Hybrid Ferromagnet/Semiconductor System

Kuang Yao Chen,Chun-Kai Yang,N. Aoki,Y. Ochiai,Y. Ujiie,K. A. Cheng,Li-Hung Lin,C. F. Huang,Yu-Ru Li,Yen Shung Tseng,Po-Tsun Lin,Jau-Yang Wu,Sheng-Di Lin,C.-T. Liang 한국물리학회 2009 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.55 No.1

Hybrid ferromagnet/semiconductor systems have been the focus of considerable attention because of the transport properties of two-dimensional electron systems and their potential applications to magnetic storage and sensing devices. We use the weak localization effect to probe the dephasing mechanism at low temperatures. In our study, the zero-temperature phase-relaxation rate can be enhanced in a hybrid ferromagnet/semiconductor system, which may be due to the inhomogeneous magnetic field emanating from the Ni film. The result may improve understanding of the issue of zero-temperature dephasing in disordered systems. Hybrid ferromagnet/semiconductor systems have been the focus of considerable attention because of the transport properties of two-dimensional electron systems and their potential applications to magnetic storage and sensing devices. We use the weak localization effect to probe the dephasing mechanism at low temperatures. In our study, the zero-temperature phase-relaxation rate can be enhanced in a hybrid ferromagnet/semiconductor system, which may be due to the inhomogeneous magnetic field emanating from the Ni film. The result may improve understanding of the issue of zero-temperature dephasing in disordered systems.

Blockchain for Bounded-Error-Pruned Content Protection

Ray-I. Chang,Lien-Chen Wei,Chia-Hui Wang,Yu-Kai Tseng 한국통신학회 2021 ICT Express Vol.7 No.3

IoT content usually comes from power-constrained sensors and requires applying different levels of protection. We design a bounded-error-pruned IoT content market (BIoTCM) framework with preserving privacy protection (BEPDPP) scheme using blockchain smart contract. According to payment level applied in smart contract of BIoTCM, our BEPDPP will prune original data within a given level of bounded-error to provide different resolutions of content for consumers. As the real data is intrinsically hidden, content protection is provided with privacy-preserving. Experimental results generated by five different types of IoT content demonstrate that our content protection solution is cost-effective in sensor lifetime.

Probing Insulator-quantum Hall Transitions by Current Heating

Kuang Yao Chen,N. Aoki,Y. Ochiai,K. A. Cheng,Li-Hung Lin,C. F. Huang,Yu-Ru Li,Yen Shung Tseng,Chun-Kai Yang,Po-Tsun Lin,Jau-Yang Wu,Sheng-Di Lin,C.-T. Liang 한국물리학회 2009 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.55 No.1

We report a magneto-transport study on the two-dimensional electron system (2DES) in an Al- GaAs/GaAs heterostructure. The direct insulator to quantum Hall conductor transition is observed at low temperatures by increasing the magnetic field B perpendicular to the 2DES. We can also observe the transition by varying the current I and find a relation Te~Ia between electron effective temperature Te and current. Here, a denotes the exponent for the power law. The exponent a, however, can have different values on the two sides of the transition point, which indicates different inelastic scattering mechanisms in the low-field insulator and in the quantum Hall conductor. We report a magneto-transport study on the two-dimensional electron system (2DES) in an Al- GaAs/GaAs heterostructure. The direct insulator to quantum Hall conductor transition is observed at low temperatures by increasing the magnetic field B perpendicular to the 2DES. We can also observe the transition by varying the current I and find a relation Te~Ia between electron effective temperature Te and current. Here, a denotes the exponent for the power law. The exponent a, however, can have different values on the two sides of the transition point, which indicates different inelastic scattering mechanisms in the low-field insulator and in the quantum Hall conductor.