695 research outputs found
[[alternative]]Tien Pei-Lin' Educational Thought and Academic Career
No full text[[abstract]]ABSTRACT
Tien Pei-Lin was born in 1893, and dead in 1975. Tien Pei-Lin had devoted himself to the education in Honan in his early lifehood. In addition, he had also devoted himself to the education in Taiwan since he came to Taiwan in 1938. He is an educational thinker and practitioner.
This study is the first thesis on exploring Tien Pei-Lin’
educational thought and academic career in our country. As far as the research method is concerned, the study is to make use of documentary analysis method and interview method. As to the content of study, at first, it illustrates Tien Pei-Lin’life and important works to illuminate his life process and central ideal. Secondly, the study inquires Tien Pei-Lin’ historical background and influence of other scholars to make us understand his philosophical basis and philosophical views. Thirdly, the study aims at inquiring Tien Pei-Lin’ educational thought and academic career to make us realize his educational thought and his contributions to our country’s education and culture. At last, the study illustrates Tien Pei-Lin’ educational thought implications, and thus it makes some suggestions for contemporary education.
一、Implications
1.Education is a process of creating spiritual values.
2.We need to criticize the deficiency of quantitative research paradigm.
3.We need to reflect educational love in the relationship between teachers and students.
二、Suggestions
1.Education should emphasize the creation of spiritual values.
2.The teacher should advocate educational love.
3.We need to develop the views of teacher education which adapts to social changes.
4.We need to develop the educational institution which is based on traditional culture.
5.We need to develop the research paradigm which involves qualitative research and quantitative research.
On Vietnam＇s Famous Classical Literature Work - Truyen Hoa Tien
No full text《花笺传》是越南著名的古典文学名著之一。本文介绍《花笺传》的作者及其创作背景,分析作品的艺术特点、影响等。Truyen Hoa Tien is one of the most famous clasical literature works in Vietnam. This article give a brief introduction of Truyen Hoa Tien＇ s author, background, artistic features and influence, etc.广西教育厅科研项目阶段性成果之一； 项目编号:201010LX07
Factors Influencing the Development of Eco-tourism in Cat Tien National Park
No full textCat Tien National Park (NP) is one of the national parks which have increasingly developed eco-tourism in the south of Vietnam. Cat Tien has great natural and humanity potential to develop this type of tourism. In this study, the author analyzes factors that influence the development of eco-tourism at Cat Tien National Park by using SPSS and statistics, analysis methods based on questionnaire survey of domestic tourists. The questionnaire-survey was conducted from February to April in 2014 because this is the peak season for ecotourism activities at Cat Tien National Park weather, season, landscape ecology...are very convenient for eco-tourism activities). Consequently, the study outcomes will provide a theoretical basis for the local government, tourism management boards, tourism companies, tourist service companies and local communities to implement specific measures to develop eco-tourism at Cat Tien national park more appropriately
A two-stage reduction for complex combustion chemistry
No full textThe combustion of hydrocarbon is a main energy resource for transportation. It is easy to start but very hard to understand and simulate. There have been several efforts to build detailed kinetic mechanisms from elementary reactions. Although they are highly accurate and well capture the complicated chemistry of combustion process, it is expensive to model with detailed mechanisms because their size is too large. Furthermore, it is not effective to apply detailed mechanism while there are only some of species and reactions involved in a typical condition. Therefore, a suitable reduced mechanism for such considered condition is a hot requirement. Recently, Petzold et al., and Androulakis suggested an automatic mechanism reduction based on the mathematical programming method. Following their approach, Banerjee et al. applied GA search to generate reduced mechanisms. The fruit of that work is a reduced mechanism library, which can govern combustion of air -- methane mixture with high accuracy. Nevertheless, the GA reduction method is hard to directly apply to the complex chemistry whose solution space is large. It, therefore, needs a first step of reduction, which can condense the search space of complex combustion mechanisms. Androulakis provided a method based on flux analysis to build a reduced mechanism with a suitable cut-off value of element flux accumulation. Although his method is flexible and very fast, the obtained mechanism can contain some species, which can be further eliminated. In this work, the two approaches mentioned above were combined to form a two-step reduction procedure on n-pentane and n-heptane mechanism. The flux analysis reduction was used first to obtain a skeleton reduced mechanism. Then the GA reduction considered the obtained mechanism as a detailed mechanism for parallel GA search. Nine conditions of n-pentane and nine conditions of n-heptane oxidation were investigated. Although the size of the final reduced mechanisms is much smaller than that of detailed mechanisms, they well estimate the oxidation process.M.S.Includes bibliographical references (p. 64-67)by Phong Tien Huyn
Novel perspectives in cancer chemoprevention via Nrf2 pathway: from pharmacogenomics to pharmacoepigenetics
No full textThe cancer chemoprevention is the strategy of blocking or slowing the onset of premalignant tumors and decreases the incidence of cancer with relatively nontoxic chemical substance. More importantly, Nrf2 and Nrf2-antioxidant response element (ARE) pathway plays a critical role in the cancer chemoprevention. Studies of the induction of Nrf2 and subsequent phase II detoxifying/antioxidant drug metabolism enzymes expression by phytochemicals in vivo or in vitro are considered as a major topic. This thesis will focus on the factors important in the regulation of Nrf2 and phase II xenobiotic metabolizing enzymes which are generally considered as antioxidant and detoxifying enzymes in cancer chemoprevention. Accumulating evidence from epidemiological studies indicates that chronic inflammation and oxidative stress play critical roles in neoplastic development. Our results show that tea Chrysanthemun zawadskii (CZ) and licorice Glycyrrhiza uralensis (LE) extracts exhibited potent anti-inflammatory activities by suppressing the mRNA and protein expression levels of pro-inflammatory biomarkers and the NF-kB luciferase activity. Both extracts also showed strong inhibitory effects against NF-kB-mediated inflammatory as well as strong activation of the Nrf2-ARE-antioxidative stress signaling pathways. Indole-3-carbinol (I3C) and its acid condensation product, 3,3’-diindolylmethane (DIM) were examined the chemopreventive effect and the molecular mechanism, particularly the anti-oxidative stress pathway regulated by Nrf2, in transgenic adenocarcinoma of mouse prostate (TRAMP) mice and TRAMP C1 cells. I3C and DIM significantly suppressed the incidence of palpable tumor (p<0.05) and reduced the genitourinary weight (p<0.05) and induced Nrf2 and related genes expression in TRAMP mice. DIM can also epigenetically modify the CpG methylation status of Nrf2 in vivo and in vitro, and enhanced expression of Nrf2 and Nrf2-mediated genes. Using dietary phytochemicals to modulate the genomic as well as epigenomic is thought to be plausible in cancer chemoprevention in the future.Ph. D.Includes bibliographical referencesIncludes vitaby Tien-Yuan W
Solvent-free beta-carotene nanoparticles for food fortification
No full textMost nutraceutical compounds are poorly-water soluble. Their low solubility decreases the adsorption rate in living organisms leading to their low bioavailability. Utilization of nanoparticles is a promising way to improve the solubility of hydrophobic compounds. Nanoparticles increase the total surface area of the poorly-water soluble nutraceuticals making them more bioavailable. Some traditional methods for decreasing particle size include pearl or jet milling, where particles are broken down through grinding or collisions under high pressure. These mechanical processes not only require high energy input but also raise a concern of milling media residues. The high pressure homogenizer approach applies implosion forces and collision of particles to generate nanosuspensions. This method requires microsuspensions as starting material and consumes high energy. Among several emulsion-based techniques for preparing nanoparticles, solvent diffusion practice is a novel approach in which a poorly-water soluble compound is transferred into nanoemulsion droplets of a partially water-soluble organic solvent. The compound then crystallizes because the solvent diffuses out of the emulsion droplets. The key point of proposed emulsion-diffusion technology is that the phase transition occurs within an isolated nanoemulsion droplet. The main purpose of this study is to develop a “green” and scalable method for preparing nanosuspensions of highly hydrophobic compounds. We use FDA GRAS ingredients to create nanoparticles of poorly-water soluble nutraceuticals. β-carotene is selected as a model hydrophobic nutraceutical. Triacetin, a partially- water soluble triacetate compound, is used as the dispersed phase of nanoemulsions. The influence of surfactant, water concentration, and homogenization time on particle size and stability is investigated. The impact of surfactant on diffusion flux of triacetin is studied. Kolmogorov theory is applied to reveal the breakup mechanism of emulsion droplets under shear and predict their size. A mathematical model is built to discover the size of emulsion droplet during the formation of nanosuspensions. It is hoped that the this work will greatly advance the manufacture of nanoparticles of poorly-water soluble nutraceuticalsPh. D.Includes bibliographical referencesby Phong Tien Huyn
On the periglacial relief of the central Tien Shan
No full textIn the course of the few months when I was visiting the Asiatic part of the Soviet Union for purposes of research,
I had the opportunity to study the scientific investigations in geomorphology carried out by the Soviet Academy of
Sciences, universities and pedagogical institutes. During my stay in the Kazakh Academy of Sciences and at the
University of Alma-Ata, owing to the kind help I got from Professor E.M. Kalmynkin and Professor A.P. Gorbunov I
was able to study the problems of periglacial relief of the Tien Shan. It is a pleasure to acknowledge my
indebtedness for their aid and for the photographs from Prof. A.P. Gorbunov’s collection, which I have show in the
present paper.
Periglacial relief in the Tien Shan still holds a great many secrets, but a number of interesting works have been
already published on the subject (8, 9, 10, 11, 12), bringing to light the remarkable forma and processes which are
modelling the Tien Shan relief. The best conditions for the development of periglacial forms are on a level
varying from 3000 do 4100 m a.s.l. The Tien Shan relief is markedly divided into belts and horizons, which is
related to geological structure and various processes occurring in the particular horizons. At the lowest horizon,
slope formation is under strong influence of outwash, landsliding and stone-falling, while the bottoms are modelled
by the stonemuddy streams (svelowe potoki). Periglacial processes prevail it the middle horizon, while the upper
one is glaciated.
Not every periglacial process and form has been discussed in the paper. The author's attention has been mainly
centred upon the processes which exert a strange and decisive influence upon the re-modelling of high-mountain
relief - as well as upon the most outstanding structures in the Tien Shan relief. Particular stress has been
laid upon the assymetry of slopes, the author taking into account also the opinions expressed on the subject by M.
Klimaszewski (17) and H. Poser and T. Müller (21). The author has discussed also solifluction plains and terraces,
solifluction streams, hydrolaccolites and peaty mounds and cryogenic ravines. There are also landslides in the
permafrost zone. The author has tried to demonstrate the connection existing between the above-named structures and
to grasp the role of landslides in the modelling of this part of the mountains
Tien lessen van "BK City" voor de campus van de toekomst
No full textNa de brand die het Bouwkundegebouw van de TU Delft in 2008 volledig verwoestte, kreeg een projectteam van specialisten, ontwerpers en managers de taak om meer dan 3000 studenten en meer dan 800 personeelsleden opnieuw te huisvesten. Binnen tien dagen werd besloten een nieuwe - tijdelijke - thuisbasis (genaamd “BK City”) te creëren in een leegstaand monumentaal pand: het voormalige hoofdgebouw van de TU Delft dat net was verkocht en op het punt stond om te worden getransformeerd tot appartementen. De crisis werd aangegrepen om diverse innovatieve concepten te testen en te experimenteren met nieuwe manieren van werken. BK City werd een ‘living lab’: de ultieme casestudy voor onderzoek. Dit essay is gebaseerd op een hoofdstuk dat Alexandra den Heijer, die het programmateam van BK-City leidde, in 2017 heeft geschreven voor een boek over campusontwikkeling (zie achtergrondinformatie). Het beschrijft tien lessen van BK City voor de campus van de toekomst. De basis voor deze evaluatie zijn de gebruikservaringen, campusonderzoek en het oorspronkelijke programma van eisen voor BK-City uit 2008*.Real Estate Managemen
Sliding mode control for systems with slow and fast modes
No full textThis dissertation addresses the problems of sliding mode control for systems with slow and fast dynamics. A system using a sliding mode control strategy can display robust performances against parametric and exogenous disturbances under the matching condition (Drazenovic's condition). We investigate the problem of output feedback sliding mode control for sampled-data systems with an unknown external disturbance. Given an output sliding surface, we construct a discrete-time control law. Since the external disturbance in the control law is unknown, we approximate it by system information from the previous time instant. The synthesized control law provides promising results with high robustness against the external disturbance. These results are further improved by a method which better approximate the disturbance by system information from two previous time instants. The stability and robustness of the closed-loop system are analyzed by studying a transformed singularly perturbed discrete-time system. The second topic is to study sliding mode control for singularly perturbed systems which exhibit slow and fast dynamics. A state feedback control law is designed for either slow or fast modes. Then, the system under that state feedback control law is put into a triangular form. In the new coordinates, a sliding surface is constructed for the remaining modes using Utkin and Young's method. A sliding mode control law is synthesized by a method which is an improved version of the unit control method by Utkin. Lastly, a composite control law is synthesized from the two components. The topic is also addressed by Lyapunov approaches. A state feedback composite control law is designed to stabilize the system. Accordingly, Lyapunov functions are constructed to synthesize a sliding surface. Two sliding surfaces and two sliding mode controllers are proposed. Asymptotic stability and disturbance rejection are achieved. Sliding mode control for singularly perturbed discrete-time systems with parametric uncertainties is also investigated. Proceeding along the same lines as in the continuous-time case, we propose two approaches to construct a composite control law. It is shown that the closed-loop system under the proposed control laws is asymptotically stable provided the perturbation parameter is small enough.Ph.D.Includes abstractVitaIncludes bibliographical referencesby Thang Tien Nguye
[[alternative]]A Study of the Changes of An Elementary School Teacher in Her Science Classes
No full text[[abstract]]Explored were the changes of an elementary school teacher’s belief and teaching performance in her science classes in the duration of 1992 to 2001. Teacher Wong was the case for study. Data of 1992 were provided by Dr. Tien-Ying Lee. The author observed the case in 2002. The classroom observation, interview of teacher and students and document collection were employed to analyze the teacher belief, questioning technique, teacher-student interaction, classroom management, assessment of students’ performance and teaching strategies. The Blosser Question Category System for Science was applied to characterize the question types of the case teacher. Flander’s category was adopted to analyzed the student-teacher interaction in her science classroom. Assertions were inducted from data analysis and triangulation. The results were as the followings: 1) no explicit change was found in the teacher’s belief in the nature of science and science teaching; 2) the amount of questions increased but most were focusing on recall, convergent thinking, and classroom management; 3) the frequency of teacher talking increased and the ratio of teacher direct influence was high as before; 4) classroom management was more diversified and vivid than before; 5) teaching strategies were more diversified and vivid than before; 6) more alternative assessments were employed. The factors that influenced the teacher’s performance are the grade to teach, teaching experience and variance of school between urban and suburban area, being a master teacher or a special content teacher, and the environment of the schools. Suggestions are recommended as follows: 1) the growth of a teacher comes from self-reflection, it is expected teachers do self-reflection always; 2) teacher can received advanced multidisciplinary learning to promote their teaching performance; 3) to facilitate a supporting system for beginning teacher is urgent need; 4) school should maintain well and provide enough equipments in laboratory to help teachers in science teaching; 5) a longitudinal observation of a teacher’s change is recommended.
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