Online reflective writing mechanisms and its effects on self-regulated learning: a case of web-based portfolio assessment system     

Chaoyun Liang  Kuen-Ming Shu  Ju-Shih Tseng  Chun-Yu Lin 《Interactive Learning Environments》2016,24(7):1647-1664

The purpose of the present study was to design reflective writing mechanisms in a web-based portfolio assessment system and evaluate its effects on self-regulated learning. Participants were two classes of juniors majoring in data processing and taking a course called “Website design” at a vocational high school in Taiwan. One class was randomly selected and assigned as an experimental group (41 students) reflecting on learning processes through a web-based portfolio assessment system, whereas the other class was assigned as a control group (41 students) reflecting on learning processes through a paper-based portfolio. The result revealed that students who were highly satisfied with online reflective writing mechanisms significantly outperformed students who were less satisfied with online reflective writing mechanisms in self-regulated students reflecting on learning processes through a web-based portfolio assessment system significantly outperformed students reflecting on learning processes through a paper-based portfolio in self-regulated learning.  相似文献   

Investigating learners' engagement and science learning outcomes in different designs of participatory simulated games     

Silvia Wen-Yu Lee  Meilun Shih  Jyh-Chong Liang  Yi-Chen Tseng 《British journal of educational technology : journal of the Council for Educational Technology》2021,52(3):1197-1214

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The Comparative Effectiveness of Physical,Virtual, and Virtual-Physical Manipulatives on Third-Grade Students’ Science Achievement and Conceptual Understanding of Evaporation and Condensation     

Tzu-Ling Wang  Yi-Kuan Tseng 《International Journal of Science and Mathematics Education》2018,16(2):203-219

The purpose of this study was to investigate the relative effectiveness of experimenting with physical manipulatives alone, virtual manipulatives alone, and virtual preceding physical manipulatives (combination environment) on third-grade students’ science achievement and conceptual understanding in the domain of state changes of water, focusing on the concepts of evaporation and condensation. A pretest-posttest design was used that involved 208 third-grade students assigned to the three learning conditions. A science achievement test and a two-tier conceptual test were administered to students before and after a teaching intervention. The results revealed that using virtual preceding physical manipulatives and virtual manipulatives alone enhanced students’ knowledge gains about evaporation and condensation greater than the use of physical laboratory activities alone. It was also found that the combination environment promoted students’ knowledge gains about these concepts equally well as the use of virtual laboratory activities alone. On the other hand, the results showed that using virtual preceding physical manipulatives promoted students’ conceptual understanding most efficiently compared to the use of either physical or virtual manipulatives alone; in contrast, experimenting with physical manipulatives alone was least influential for students’ conceptual understanding compared to the other manipulatives.  相似文献   

Mining fuzzy frequent itemsets for hierarchical document clustering     

Chun-Ling Chen  Frank S.C. Tseng  Tyne Liang 《Information processing & management》2010

As text documents are explosively increasing in the Internet, the process of hierarchical document clustering has been proven to be useful for grouping similar documents for versatile applications. However, most document clustering methods still suffer from challenges in dealing with the problems of high dimensionality, scalability, accuracy, and meaningful cluster labels. In this paper, we will present an effective Fuzzy Frequent Itemset-Based Hierarchical Clustering (F²IHC) approach, which uses fuzzy association rule mining algorithm to improve the clustering accuracy of Frequent Itemset-Based Hierarchical Clustering (FIHC) method. In our approach, the key terms will be extracted from the document set, and each document is pre-processed into the designated representation for the following mining process. Then, a fuzzy association rule mining algorithm for text is employed to discover a set of highly-related fuzzy frequent itemsets, which contain key terms to be regarded as the labels of the candidate clusters. Finally, these documents will be clustered into a hierarchical cluster tree by referring to these candidate clusters. We have conducted experiments to evaluate the performance based on Classic4, Hitech, Re0, Reuters, and Wap datasets. The experimental results show that our approach not only absolutely retains the merits of FIHC, but also improves the accuracy quality of FIHC.  相似文献   

Increased density and coverage uniformity of viruses on a sensor surface by using U-type, T-type, and W-type microfluidic devices     

Wu CC  Tseng PK  Tsai CH  Liu YL 《Biomicrofluidics》2012,6(2):24124-2412418

Microorganisms, molecules, or viruses in the fluidic environment are usually at considerably low Reynolds numbers because of small diameters. The viscous forces of molecules and viruses dominate at considerably low Reynolds numbers. This study developed three microfluidic devices, that is, T type, U type, and W type devices, to control the flow movement, which can increase the adhesion density of viruses on the surface of the sensor. The linker 11-mercaptoundecanoic acid (11-MUA) and Turnip yellow mosaic virus (TYMV) were used in this study and measured by a confocal microscope. Fluorescent intensity and coverage of 11-MUA and TYMV were used to identify the adhesion density quantitatively. Results indicate that 11-MUA layers and TYMV disperse randomly by the dipping method. Attachment tests for T-, U-, and W-type devices demonstrated average fluorescence intensities of 1.56, 2.18, and 2.67, respectively, and average fluorescence coverage of 1.31, 1.87, and 2.55 times those of dipping techniques, respectively. The T-type device produced the lowest fluorescence coverage uniformity (10%-80%), whereas the W-type device produced the highest fluorescence coverage uniformity (80%-90%). Fluorescence intensity correlates positively with flow within a specified flow range; however, the exact relationship between fluorescence intensity and flow requires further study. Attachment tests for TYMV virus samples indicated that the W-type device produced an average fluorescence intensity of 3.59 and average fluorescence coverage of 19.13 times greater than those achieved through dipping techniques. Traditional immersion methods achieved fluorescence coverage of 0%-10%, whereas that of the W-type device reached 70%-90%.  相似文献   

广西冬青属新种     

曾沧江 《中国科学院研究生院学报》1984,22(5):413-416

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Use and performances of Web-based portfolio assessment     

Chi-Cheng Chang  Kuo-Hung Tseng 《British journal of educational technology : journal of the Council for Educational Technology》2009,40(2):358-370

This research explored the influence of a Web-based portfolio assessment system on students' performances. The methodological procedure adopted was to have the experimental group use the system, with the control group using conventional assessment. The study subjects were junior high school students of two computer classes. The experimental results revealed that the use of the system has significant positive influence on students' performances. According to estimated effect size, the most significant indicators were reflection, self-assessment, continuous improvement, goal setting, problem solving, data gathering, work and peer interaction. However, peer-assessment performance was not enhanced significantly. Therefore, one recommendation was to reduce peer-assessment and instead offer specific illustrations to the students as well as the opportunity to drill.  相似文献   

中国菊科植物杂记     

林镕  程用谦 《中国科学院研究生院学报》1978,16(3):82-86

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刺楸学名考证     

曾沧江 《中国科学院研究生院学报》1984,22(5):428-429

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五加科分族新纲要     

曾沧江  何景 《中国科学院研究生院学报》1982,20(2):125-130

The present paper deals with the following three aspects:      1. It attempts to discuss the problems on primitive forms of the family Araliaceae. The genus Tupidanthus Hook. f. & Thoms. was considered by H. Harms (1894) and H. L. Li (1942) as primitive, whilst another genus Plerandra A. Gray was regarded as primitive by R. H. Eyde & C. C. Tseng in 1971. Having made a detailed comparison of the taxonomical characters of these two genera, the present authors believe that both genera are not the most primitive in the Araliaceae. Their affinit yis not close enough and they possibly evolved in parallel lines from a common ancestor which is so far un- known yet.      2. By studying the systems of the past, the present authors believe that none of them is entirely satisfactory. Bentham (1867) recognized five ‘series’ (in fact, equival- ent to ‘tribe’ with the ending-eae of names) based on the petaline arrangement in the bud, the numbers of stamen and the types of endospem. This is a plausible funda- mental treatment for the Araliaceae, but choosing the endosperm as a criteria in dividing tribe is artifical. As we know today, both ruminate and uniform endosperm are usually presente in the same genus.  Seemann’s system (1868) divided the Hederaceae (excl. Trib. Aralieae) into five tribes, in addition to the locules of ovary.  The criteria are essentially the same as Bentham’s. The system of Hams (1894) divided the family into three tribes. Two tribes, Aralieae and Mackinlayeae, of  Bentham are  retained,  but other groups were combined in the Trib. Schefflereae.  However, Harms did not retain one of those three oldest legitimate names which had named by Bentham, that is con- trary to the law of priority in the International Code of Botanical Nomenelature. Hut- chinson (1967) adopted seven tribes for the family. The criteria essentially follow those of Bentham, but the inflorescence is overstressed. The inflorescence is an artifical taxono- mical character in dividing tribes, because of some dioecious plants, such as Meryta sin- clairii (Hook. f.) Seem., have two types of inflorescence in male and female plants. Ac- cording to Hutchinson’s arrangement, the male and female plants would be put in se- parate tribes.     3.   The present authors are of the opinion that in the study of a natural classi- fication of plant groups emphasis should be laid not only on the characters of the repro- ductive organs, but on those of vegetative organs as well.  The present revised system is based principally upon the characters of both flowers and leaves of the five tribes as follows:       Trib. 1. Plerandreae Benth. emend. Hoo & Tseng      Trib. 2. Tetraplasandreae Hoo & Tseng       Trib. 3. Mackinlayeae Benth.      Trib. 4. Aralieae Benth.       Trib. 5. Panaceae Benth. emend. Hoo & Tseng  相似文献