Using Color Composition Diagrams as a Medium for Promoting Better-balanced Diet

Yao Dai,Yi-Lin Zhuang,Nan-Ling Yeh,Jun Pana,I-Ping Chen 한국색채학회 2017 AIC 2017 Jeju Vol.2017 No.10

We aim to design an App that helps people establish an increased awareness on their daily diet in a highly playful manner. The core concept of this App is to use color information of food photographs people take before meals to give users feedback on how to balance their diets. A healthy food and an unhealthy food color template were created through the following process: using the guideline provided by WHO (World Health Organization), we collected thousands of images of healthy and unhealthy food. The collective color attributes (hue composition, weights of redness, greenness, yellowness, and blueness, average luminance, general contrast) of each of the two groups were derived to render a visualizable color composition template. This way, all the incoming food pictures taken by the user can be compared to the healthy and the unhealthy template. Instead of informing the user ‘You should take more protein.’, our App gives feedback like ‘Maybe you should try more RED.’ Our user experience assessment shows that users enjoy playing with such graphic interface and will potentially pay more attention to their daily diets.

국제학술대회 발표문 : 한어의문구적어의 (漢語疑門句的語義) 분석

대요정(Yao Jing Dai) 중국어문연구회 2000 中國語文論叢 Vol.19 No.-

한어부정표달적어의분석(漢語否定表達的語義分析)

대요정 중국학연구회 2000 中國學硏究 Vol.19 No.-

부정은 매우 보편적인 언어현상이다. 본 논문은 주로 중국어 부정표현의 합의를 다섯 가지 측면에서 다루었다. 첫째, 부정은 모순된 의미관계의 언어적 표현이다. 둘째, 부정은 질적 부정과 양적 부정으로 나눌 수 있다. 질적 부정은 사물의 질적 규정성을 부인하는 것이며 그 함의는 "없다(無)"이다. 양적부정은 사물의 수량적 규정성을 부인하는 것이며 그 합의 "∼보다 적다(少干)"이다. 셋째, 부정과 긍정은 모두 단언(斷言)이지만 확정적인 측면에서 차별이 있다. 긍정단언은 사물의 확정적 합의를 규정하지만, 부정단언은 단지 사물의 일부 측면의 내용을 배제할 뿐 사물의 성질을 확정하지는 않는다. 넷째, 언어 속에 나타나는 부정표현은 기표의 형식이며 긍정표현은 무기표의 형식이다. 다섯째, 부정의 어의량은 큰 쪽을 향해서는 확정하고 작은 쪽을 향해서는 확정하지 않는다. 이는 긍정의 어의량의 확정 방향과는 상반된다. 끝으로 현대 중국어의 주요한 두 가지 부정표지인 '不'와 '沒'의 용법을 비교함으로써 양자의 의원성(意願性), 시간성(時間性), 정태성(靜態性), 변화성(變化性), 사물성(事物性)등 어의 내용의 부정적 측면의 차이를 분석하였다.

Morphological and Molecular Phylogenetic Data of the Chinese Medicinal Fungus Cordyceps liangshanensis Reveal Its New Systematic Position in the Family Ophiocordycipitaceae

( Yao Wang ),( Yong-dong Dai ),( Zhong-lin Yang ),( Rui Guo ),( Yuan-bing Wang ),( Zhu L. Yang ),( Lei Ding ),( Hong Yu ) 한국균학회 2021 Mycobiology Vol.49 No.4

A cordycipitoid fungus infecting Hepialidae sp. in Nepal was supposed to be identical to Cordyceps liangshanensis, originally described from southwestern China, and thus, transferred to the genus Metacordyceps or Papiliomyces in previous studies. However, our multi-gene (nrSSU-nrLSU-tef-1a-rpb1-rpb2) phylogenetic and morphological studies based on the type specimen and additional collections of C. liangshanensis revealed that the fungus belongs to the genus Ophiocordyceps (Ophiocordycipitaceae). Therefore, a new combination O. liangshanensis was made, and a detailed description of this species was provided.

Accurate Voltage Parameter Estimation for Grid Synchronization in Single-Phase Power Systems

Dai, Zhiyong,Lin, Hui,Tian, Yanjun,Yao, Wenli,Yin, Hang The Korean Institute of Power Electronics 2016 JOURNAL OF POWER ELECTRONICS Vol.16 No.3

This paper presents an adaptive observer-based approach to estimate voltage parameters, including frequency, amplitude, and phase angle, for single-phase power systems. In contrast to most existing estimation methods of grid voltage parameters, in this study, grid voltage is treated as a dynamic system related to an unknown grid frequency. Based on adaptive observer theory, a full-order adaptive observer is proposed to estimate voltage parameters. A Lyapunov function-based argument is employed to ensure that the proposed estimation method of voltage parameters has zero steady-state error, even when frequency varies or phase angle jumps significantly. Meanwhile, a reduced-order adaptive observer is designed as the simplified version of the proposed full-order observer. Compared with the frequency-adaptive virtual flux estimation, the proposed adaptive observers exhibit better dynamic response to track the actual grid voltage frequency, amplitude, and phase angle. Simulations and experiments have been conducted to validate the effectiveness of the proposed observers.

A High-Throughput Method Based on Microculture Technology for Screening of High-Yield Strains of Tylosin-Producing Streptomyces fradiae

Yao Zhiming,Fan Jingyan,Dai Jun,Yu Chen,Zeng Han,Li Qingzhi,Hu Wei,Yan Chaoyue,Hao Meilin,Li Haotian,Li Shuo,Liu Jie,Huang Qi,Li Lu,Zhou Rui 한국미생물·생명공학회 2023 Journal of microbiology and biotechnology Vol.33 No.6

Tylosin is a potent veterinary macrolide antibiotic produced by the fermentation of Streptomyces fradiae; however, it is necessary to modify S. fradiae strains to improve tylosin production. In this study, we established a high-throughput, 24-well plate screening method for identifying S. fradiae strains that produce increased yields of tylosin. Additionally, we constructed mutant libraries of S. fradiae via ultraviolet (UV) irradiation and/or sodium nitrite mutagenesis. A primary screening of the libraries in 24-well plates and UV spectrophotometry identified S. fradiae mutants producing increased yields of tylosin. Mutants with tylosin yield 10% higher than the wild-type strain were inoculated into shake flasks, and the tylosin concentrations produced were determined by highperformance liquid chromatography (HPLC). Joint (UV irradiation and sodium nitrite) mutagenesis resulted in higher yields of mutants with enhanced tylosin production. Finally, 10 mutants showing higher tylosin yield were re-screened in shake flasks. The yield of tylosin A by strains UN-C183 (6767.64 ± 82.43 μg/ml) and UN-C137 (6889.72 ± 70.25 μg/ml) was significantly higher than that of the wild-type strain (6617.99 ± 22.67 μg/ml). These mutant strains will form the basis for further strain breeding in tylosin production.

Accurate Voltage Parameter Estimation for Grid Synchronization in Single-Phase Power Systems

Zhiyong Dai,Hui Lin,Yanjun Tian,Wenli Yao,Hang Yin 전력전자학회 2016 JOURNAL OF POWER ELECTRONICS Vol.16 No.3

This paper presents an adaptive observer-based approach to estimate voltage parameters, including frequency, amplitude, and phase angle, for single-phase power systems. In contrast to most existing estimation methods of grid voltage parameters, in this study, grid voltage is treated as a dynamic system related to an unknown grid frequency. Based on adaptive observer theory, a full-order adaptive observer is proposed to estimate voltage parameters. A Lyapunov function-based argument is employed to ensure that the proposed estimation method of voltage parameters has zero steady-state error, even when frequency varies or phase angle jumps significantly. Meanwhile, a reduced-order adaptive observer is designed as the simplified version of the proposed full-order observer. Compared with the frequency-adaptive virtual flux estimation, the proposed adaptive observers exhibit better dynamic response to track the actual grid voltage frequency, amplitude, and phase angle. Simulations and experiments have been conducted to validate the effectiveness of the proposed observers.

Research on Innovative Design of Shared Refrigerator

Shi Yao-jun,Wu Nai-qun,Dai-ye 보안공학연구지원센터 2016 International Journal of Smart Home Vol.10 No.8

The conceptual design of shared refrigerator is mainly from the humanization to solve the problem that different smells that made by different foods stored together, and it can effectively avoid the unreasonable use of the refrigerator space. In this refrigerator design, the practical problems encountered in the using process are fully considered and analyzed, and the humanized design concept is widely used. This article, focusing on people's needs in their daily lives, taking full account of the relationship between structure and function of the refrigerator, is mainly about the innovative design and research of shared refrigerator in terms of function, structure, materials, process and man-machine relationship, etc. This article puts forwards a new refrigerator–design-concept to make people feel the beauty, happiness and convenience of life brought by the design.

Research on Innovative Design of Mobile Cooking Table

Shi Yao-jun,Wu Nai-qun,Dai Ye 보안공학연구지원센터 2015 International Journal of Smart Home Vol.9 No.11

The innovative design of mobile cooking table is aimed to meet growing consumers’ demand, on the basis of existing technical conditions. Mobile table is a mobile cooking equipment. But this ‘mobility’ is not defined as the moving of table while working. In other words, it realizes the function of the mobile cooking according to the different operating environment. This paper mainly on the basis of the principle of ergonomics and the concept of humanized design, conduct the design on the overall size and construction of the cooking table from the aspect of function, material and institution to develop a cooking table with strong practicality in order to meet demands of different consumers.

Optical Properties of Zinc-oxide Films Determined Using Spectroscopic Ellipsometry with Various Dispersion Models

Zhong-Hong Dai,Jie Shao,Yi-Ming Chen,Yu-Xiang Zheng,Jia-Da Wu,Liang-Yao Chen,Rong-Jun Zhang 한국물리학회 2009 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.55 No.3

In this work, we have studied the optical properties of wurtizite zinc-oxide films grown on silicon (100) substrates by means of pulsed laser deposition (PLD). Spectroscopic ellipsometry and three dispersion models, namely, the Sellmeier, Cauchy, and Forouhi-Bloomer models, were applied for determining the optical constants of the ZnO thin films. A comparison was made between two samples that were deposited for 30 minutes (sample I) and 60 minutes (sample II), respectively. X-ray diffraction analysis indicates that there are two types of preferred-orientation, i.e., (101) and (100) orientations for sample I and II, respectively. Results show that the Cauchy model gives the best fit for the samples with least root mean square error (RMSE) whereas the Forouhi-Bloomer model is most suitable for the data analysis in both the transparent and the absorption regions. The optical properties extracted from different dispersion models have been compared with the data reported in the literature. The results given in this work show that different dispersion models should be applied to obtain the optical constants In this work, we have studied the optical properties of wurtizite zinc-oxide films grown on silicon (100) substrates by means of pulsed laser deposition (PLD). Spectroscopic ellipsometry and three dispersion models, namely, the Sellmeier, Cauchy, and Forouhi-Bloomer models, were applied for determining the optical constants of the ZnO thin films. A comparison was made between two samples that were deposited for 30 minutes (sample I) and 60 minutes (sample II), respectively. X-ray diffraction analysis indicates that there are two types of preferred-orientation, i.e., (101) and (100) orientations for sample I and II, respectively. Results show that the Cauchy model gives the best fit for the samples with least root mean square error (RMSE) whereas the Forouhi-Bloomer model is most suitable for the data analysis in both the transparent and the absorption regions. The optical properties extracted from different dispersion models have been compared with the data reported in the literature. The results given in this work show that different dispersion models should be applied to obtain the optical constants