337,217 research outputs found
Beyond Lesson Studies and Design Experiments: Using theoretical tools in practice and finding out how they work
No full textThis paper aims to illustrate how fruitful insights into the link between school teaching practice and student learning outcomes can be theoretically grounded by the variation theory from the field of phenomenography; and from this framework demonstrate how a 'pedagogy of awareness' can be implemented in the classroom. In this study, five teachers and 162 students at Primary Four level of school education in Hong Kong participated and the practice of the 'learning study' was adopted. By comparing the results of pre- and posttests, a significant gain was observed in the students learning outcomes.
Epilachna tianpingiensis Pang et Mao 1979
No full textEpilachna tianpingiensis Pang et Mao, 1979 Specimens examined. Guangdong: Kangtung S China Yaoshan (Mt range) Lin-hsien District, 1934.v. 6 –8, 9– 10, F.K. To (2, SYSM). Lechang, Tiantang, Xiangyashan, 1947.viii. 19; Daxi, 1947.viii. 17; Shuijunshan, 1947.viii. 25; Houling, 1947.viii. 10 (8, SYSM). Kwangtung S China Hau-leng Tin-tong, Loh-chang District, 1947.viii. 1, Tsang & Lam; Kwangtung S China Cheung-nga San, Tin-tong, Loh-chang District, 1947.viii. 25; 1947.ix. 8, Tsang (10, SYSM).Published as part of Pang, Hong, Ślipiński, Adam, U, Yap Ing W & Zuo, Yongsheng, 2012, Contribution to the knowledge of Chinese Epilachna Chevrolat with descriptions of new species (Coleoptera: Coccinellidae: Epilachnini), pp. 1-37 in Zootaxa 3420 (1) on page 22, DOI: 10.11646/zootaxa.3420.1.1, http://zenodo.org/record/28196
Epilachna bocaki Pang
No full textEpilachna bocaki Pang et Ś lipi ń ski sp. nov. (Figs 23 a–j) Etymology. The species is dedicated to our friend Dr. Ladislav Bocák of the Palacky University, Olomouc, Czech Republic, who collected large series of Epilachna in China, including the holotype of this species. Diagnosis. E. bocaki is very similar to E. glochinosa Pang et Mao, E. hopeiana Miyatake and E. concuongensis Hoàng and can only be distinguished by the shape of the penis apex (Figs. 9 e, 23 j). Description. Length 8.4 mm. TL/EW = 1.31; PL/PW = 0.43; EL/EW = 1.06; EL/PL = 4.0. Body oval. Dorsum reddish; pronotum with central transverse spot of varying size. Elytra with 6 pairs of black, partially interconnected spots, arranged as on Figs. 23 a–c; humeral spot large, reaching anterior edge of elytron and connected to sutural spot; median three spots connected into transverse fascia extending from lateral margin to suture. Abdominal postcoxal line complete, extending posteriorly to 0.6 of ventrite length (Fig. 23 e). Male genitalia (Figs. 23 f–j). Penis arcuate with short, clubbed apical piece; parameres narrow and as long as penis guide; penis guide narrow and apically pointed. Female genitalia: ovipositor short, coxites oval and broadly rounded, as in Fig. 23 d. Types. Holotype (male), Sichuan: Mt. Emei, 1989.v. 5–19, Lad. Bocák (NHMB) (No. CHC-0121). Paratypes. Guanxian, 1989.v. 20, S. & J. Kolibáč (3, NHMB); Guanxian, 1989.v. 21–22; 1998.vi. 24–29, Lad. Bocák (1, NHMB; 1, SYSM). Distribution. Sichuan.Published as part of Pang, Hong, Ślipiński, Adam, U, Yap Ing W & Zuo, Yongsheng, 2012, Contribution to the knowledge of Chinese Epilachna Chevrolat with descriptions of new species (Coleoptera: Coccinellidae: Epilachnini), pp. 1-37 in Zootaxa 3420 (1) on page 27, DOI: 10.11646/zootaxa.3420.1.1, http://zenodo.org/record/28196
Ping-Pong-Pang Instrumentation Amplifier
No full textThis thesis describes the implementation of a Precision Instrumentation Amplifier using a Current Feedback Instrumentation Amplifier topology (CFIA). CFIAs are attractive for sensor readout, because of their high CMRR and their ability to interface with ground-referenced sensors. Several chopping and auto-zeroing techniques have been developed to reduce the offset and 1/f noise of such amplifiers to the ?V level. As a result, their dominant source of error is now gain error, which is limited by mismatch to at best 0.1%. This paper describes a CFIA that applies dynamic element matching (DEM) to achieve a gain error of less than 0.04%. Moreover, it presents the first silicon implementation of the ping-pong-pang (PPP) auto-zeroing scheme, which enables a 3.5× reduction in power consumption and 2.5× improvement in gain error as compared to state-of-the-art ping-pong auto-zeroed CFIAs.Electronic InstrumentationMicroelectronics & Computer EngineeringElectrical Engineering, Mathematics and Computer Scienc
Synura morusimila W. Pang & Q. Wang 2013, sp. nov.
No full text<i>Synura morusimila</i> W. Pang & Q. Wang, <i>sp. nov.</i> (Figs. 2–16) <p>Colony rectangular, large; cell ovate, two types of scales: caudal scale ovate to obovate, 1.6–2.9 × 3.0– 3.5 µm, spineless, small pores on the base plate, upturned edge supported by radial ribs; body scale, oval, ovate or obovate, 2.1–2.6 × 2.8–3.6 µm, spine-bearing, with teeth on the top, ridges or an irregular reticulum radiating from the base of the spine to the plate, small pores on the center to the back of the base plate. Stomatocyst of smooth surface, ovate, 14.0–15.7 × 19.5–22.1 µm, with a low conical collar and a regular pore.</p> <p> <b>Type:––</b> CHINA. Inner Mongolia: Genhe, Yuelian, 23 July 2006, coll. <i>Quanxi Wang & Wanting Pang</i>, 063376 (holotype: SEM stub 063376 and permanent light microscopic slide 063376, Shanghai Normal University, Shanghai, China).</p> <p>Colonies (Figs. 2–4) rectangular, 63.6–68.2 × 109.1–186.4 µ m. Cells ovate (Figs. 5–6), 16.5–17.7 × 22.9–24.7µm with pale chloroplasts. The stomatocyst (Figs. 7–10), Stomatocyst 55, Pang, W & Q. Wang, is large and ovate, 14.0–15.7 × 19.5–22.1 µm, smooth. It is relatively flat or depressed at anterior extremity and round at posterior extremity. There is a low conical collar (basal diameter 1.5–2.2 µm; apical diameter 1.2–1.4 µm; height 0.13–0.24 µm) surrounding the regular pore (diameter 0.9–1.1 µm). From broken specimens it can be observed that the body is 0.65–0.86 µm thick, but it is thinner near the collar (thickness ca. 0.4 µm).</p> <p>The scales consist of two distinct types (Figs. 11–12). The body scales (Figs. 13–17) are oval, ovate or obovate, 2.1–2.6 × 2.8–3.6 µm. The spine is cylindrical, 1.1–1.8 µm long, terminating in 10–14 teeth. The base of the spine is covered with ridges or irregular reticulum, radiated to the plate. The upturned edge is broad, inside it is supported by struts. The base plate in the center to back of the scale is provided with small pores. The spineless caudal scales (Fig. 18) are ovate to obovate, 1.6–2.9 × 3.0– 3.5 µm. The upturned edge is supported by radial ribs. The base plate in the back of the scale is provided with small pores.</p> <p> <i>Synura morusimila sp. nov.</i> is most closely related to species in the section <i>Synura</i> (Balonov & Kuzmin 1974: 1677) based on distal spines of the body scales and spineless caudal scales. It is distinguished from other <i>Synura</i> taxa by the cylindrical spine on the body scale and the irregular reticulum on the base of the spine.</p> <p> The colony and cell descriptions of <i>S. morusimila</i> are based on the LM observation of the cells with stomatocysts forming in them. However, the colony shape of <i>S. morusimila</i> might be similar to <i>S. spinosa</i> (Kristiansen & Preisig 2007) where the colony is often elongated.</p> <p> Our new species shares many morphological features of the scales with <i>S. uvella</i> (Kristiansen & Preisig 2007). In TEM, differences between the two species are evident, including the distal part of the scale, the shape of the spine and density of the pores in the centre of the scale. The scale of <i>S. uvella</i> has a conical spine while the spine on the scale of <i>S. morusimila</i> is cylindrical. A meshwork covers the distal part of the scale in <i>S. uvella</i>, while there is an irregular reticulum seen in <i>S. morusimila</i>. In the case of <i>S. uvella</i>, more densely arranged pores are on the center of the scale.</p> <p> Compared to the fossil <i>Synura</i> species, <i>S. recurvata</i> Siver & Wolfe (2005: 303), the spine apex of <i>S. morusimila</i> is round and ornamented randomly with teeth. The spine apex of <i>S. recurvata</i> is flat and lined with a ring of teeth which most often are bent slightly backwards.</p> <p> The stomatocyst of <i>S. morusimila</i> is similar to Stomatocyst 302, Gilbert & Smol (Gilbert <i>et al</i>. 1997) which is produced by <i>S. splendida</i> (Bourrelly 1957), but in the latter the collar is larger, and its body is ornamented with five or six smooth, flat, elevated plateaux. It is also similar to the cyst of <i>S. uvella</i> (Bourrelly 1957) which was described with a line drawing based on LM.</p> <p> <i>Synura</i> species have diverse ecologies; some species are widespread, others are extremely rare and confined to special habitats (Kristiansen 1975). The colony and stomatocyst of <i>S. morusimila</i> were abundant in the samples collected from bogs with <i>Sphagnum</i> and <i>Carex</i>. Scales and stomatocysts were found from the Yuelian, Alongshan and Amuer localities, but colonies were only observed from Yuelian, where they were in deep forest showing little trace of human habitation. These observations might suggest that <i>S. morusimila</i> might prefer peat bogs with low temperature, low pH and scarce human disturbance.</p> <p> <b>Distribution and ecology:––</b> <i>Synura morusimila</i> was found in bogs in Yuelian, Alongshan and Amuer with pH lower than 7, water temperature 10–15 ºC (summarized in Table 1).</p> <p> <b>Etymology:—</b> The species name is derived from the shape of the colony with stomatocysts as in the fruit of the mulberry.</p>Published as part of <i>Pang, Wanting & Wang, Quanxi, 2013, A new species, Synura morusimila sp. nov. (Chrysophyta), from Great Xing'an Mountains, China, pp. 55-60 in Phytotaxa 88 (3)</i> on pages 57-59, DOI: 10.11646/phytotaxa.88.3.3, <a href="http://zenodo.org/record/5071912">http://zenodo.org/record/5071912</a>
Metriogryllacris (Metriogryllacris) obscurata Zhang, Pang & Bian 2022
No full text<i>Metriogryllacris</i> (<i>Metriogryllacris</i>) <i>obscurata</i> Zhang, Pang & Bian, 2022 ĸüạșŝ <p>Figure 4</p> <p> <b>Female (first description).</b> Wings reaching the posterior margin of fifth abdominal tergite. Fore and middle tibiae with 4 pairs of spurs and 1 pair of apical spurs on ventral surfaces; middle tibiae with 1 internal spine on dorsal surface. Hind femora with 14 internal and 6 external spines on ventral surface; tibiae with 5 <b>–</b> 6 internal and 6 external spines on dorsal surface, apices with 1 pair of dorsal spurs and 2 pairs of ventral spurs, subapical area with 1 pair of ventral spurs.</p> <p> Second and third abdominal tergites with few, very minute stridulatory pegs (Fig. 4E). Seventh abdominal sternite longer than wide, posterior margin widely rounded; ventral surface concave following with one sclerotized transverse fold (Fig. 4G). Subgenital plate transverse, lateral margins convexly approaching, posterior margin arched, ventral surface with 1 pair of conical processes (Fig. 4G). Ovipositor short, apart from subbasal gradually and obliquely curved upward, apical area slightly curved dorsad, apices obtuse; basal area of ventral valvulae wide and then terminating into 1 pair of long spines, its apices directing backward (Fig. 4F, H). Other characters (including coloration) as the male’s description (Zhang <i>et al.</i>, 2022).</p> <p> <b>Measurements (mm).</b> Female: BL 23.07, PL 4.66, HLF 10.75, TL12.13, OvL 7.43.</p> <p> <b>Material examined.</b> 1 female, Kengdi, Shouning, Fujian, July 17, 2023, coll. by Fanduo Cai.</p> <p> <b>Discussion.</b> The female sex of the species differs from that of <i>Metriogryllacris</i> (<i>Metriogryllacris</i>) <i>bimacula</i> Yu, Liu & Bian, 2022 by subgenital plate bearing 1 pair of conical processes on ventral surface (Fig. 4G); basal area of ventral valvulae prolonged into 1 pair of long spines.</p>Published as part of <i>Zhang, Qianwen, Pang, Siyu & Bian, Xun, 2023, Contribution to the knowledge of Chinese Gryllacrididae (Orthoptera) XXI: New reports from Fujian Province, pp. 60-66 in Zootaxa 5353 (1)</i> on pages 64-65, DOI: 10.11646/zootaxa.5353.1.3, <a href="http://zenodo.org/record/8426977">http://zenodo.org/record/8426977</a>
Thescelostrophus cretaceus Yu, Hsiao, Slipinski, Jin, Ren & Pang 2016
No full text393) Thescelostrophus cretaceus Yu, Hsiao, Ślipiński, Jin, Ren & Pang, 2016 Thescelostrophus cretaceus Yu, Hsiao, Ślipiński, Jin, Ren & Pang, 2016: 36. Type specimen(s). H: No. CNU-COL-MA2016001 (CNU).Published as part of Guo, Mingxia, Xing, Lida, Wang, Bo, Zhang, Weiwei, Wang, Shuo, Shi, Aimin & Bai, Ming, 2017, A catalogue of Burmite inclusions, pp. 249-379 in Zoological Systematics 42 (3) on page 321, DOI: 10.11865/zs.201715, http://zenodo.org/record/536031
Interprofessional education : the interface of nursing and social work
No full textAuthor name used in this publication: Samantha Pang Mei ChiAuthor name used in this publication: Shirley ChingAuthor name used in this publication: Syrine K. S. Lam2009-2010 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishedPublisher permissio
Seismic travel-time data from: Illuminating structural variability of the East Aleutian plate interface from local and teleseismic P-to-S converted waves
No full textPlease cite as: Kiara A. Daly, Geoffrey A. Abers, Michael E. Mann, Guanning Pang, Doyeon Kim. (2025) Seismic travel-time data from: Illuminating structural variability of the East Aleutian plate interface from local and teleseismic P-to-S converted waves. [dataset] Cornell University Library eCommons Repository. https://doi.org/10.7298/sjdk-8272These files contain picked arrival times and file descriptions for the P-to-S conversions as described in Daly et al., Illuminating structural variability of the East Aleutian plate interface from local and teleseismic P-to-S converted waves, J. Geophys. Res., 2025. The observations are travel times for local earthquakes to local stations where mode-converted secondary arrivals were observed, explained as P-to-S (PS) conversions. Those conversions appear as strong S-polarized arrivals between the P and S phases, for earthquakes generally more than 40 km deep and paths of several tens to a couple hundred kilometers. The conversions take place near the top of the subducting Pacific Plate, so form evidence for plate structure and geometry. That publication documents the methodology and results; these data are used to make Figures 3, 4, 7, 8 and 11. Earthquake locations are from the "AACSE" dataset described in Ruppert et al. (2023), and station locations match those in the Supplemental Tables of the published paper.This study supported by the U.S. National Science Foundation, grant OCE-1949130
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