30,967 research outputs found
Face On, Face Off, Face Up: Kids discussion in two worlds
No full textAbstract for BERA Research on the Paideia Method (a method for discussing a topic) was conducted in 20 classrooms across five schools, of varying socio economic environments (ages 11-13) in Auckland, New Zealand in 2010. The researchers sought to further examine the results from their pilot study of the Paideia Seminar, entitled ‘Talking Allowed: I like it when the teacher lets us talk without telling us what to say’ trialed in 2008 (Sinclair & Davies, 2011). In addition, in order to provide the optimum conditions to prepare the students for the face to face seminars, an online component Moodle (open source software) was added as an alternative medium to assist students in their preparation. What happens to the Nature of Interaction and the Complexity of the Discussion when students participate in a Paideia Seminar and an on-line discussion in preparation for the face to face Seminar? What is the optimal role of the teacher when participating in a Paideia Seminar and an on-line discussion to increase complexity of discussion? This research also revealed the significance of the teacher’s role to the student-to-student responses being at a high complexity of thinking. For both the face-to-face seminars and the on-line Moodle discussion, when teachers provided opportunity and directions for students to garner domain knowledge, the resulting dialogue was higher in complexity. Ongoing challenge to students to provide evidence to support their statements was paramount. Furthermore, the study found that one of the conditions, which fostered this higher complexity of thinking, was in the selection of a highly provocative statement or question, which generated multiple perspectives. The study used a mixed method exploratory design, Cresswell (2003). The data for normative practice, on-line discussion and face to face was sub-divided into two main categories: The Nature of Interaction and The Complexity of the Discussion. The Nature of the Interaction was analysed according to the type of interaction – eg student to student with a question (SSQ). Within the Nature of Interaction, the dialogue in both on-line and face-to-face was analysed according to its complexity, using the five-stages of SOLO (the Structure of Observed Learning Outcomes) taxonomy developed by Biggs and Collis (1982). The five stages of SOLO are prestructural, unistructural, multistructural, relational, and extended abstract. This study will contribute to the body of knowledge on how deep learning can be generated through student-to-student interactions, rather than teacher led discussions in both face-to-face and on-line dialogue
Lactarius indoviolaceus I. Bera & K. Das 2022, sp. nov.
No full textLactarius indoviolaceus I. Bera & K. Das sp. nov. Figs. 2, 3 MycoBank:— MB 844780 GenBank:— ON951745 (nrITS, Holotype) and ON951747 (nrITS) Diagnosis:—A medium-sized Lactarius that can be separated from its closest relative, L. pyriodorus with its non-zonate, greyish yellow pileus and yellowish white stipe which turn pale violet on bruising or exposure of the context, much thinner pileipellis, and growth under Castanopsis spp. Type:— INDIA. Arunachal Pradesh, West Kameng district: Shergaon, N 27°07.810’ E 092°15.116’, Elev. 2243 m, 22 July 2019, I . Bera & K. Das, IB 19-015 (CAL 1876, holotype!). Etymology:—The epithet refers to the basidiomata staining pale violet on bruising and occurring in India. Description:— Pileus 65–75 mm diam., planoconvex with a deep central depression; surface moist, very greasy, finely and faintly rugulose in the centre, greyish yellow (4B3) at centre, lighter towards margin; margin regular, entire, smooth, incurved. Lamellae subdecurrent, close (10 L+l /cm at pilear margin), sometimes forked; lamellulae present, in 5 series; edge entire; yellowish grey (3–4B3), immediately turning pale violet (17A3) on bruising. Stipe 120–140 × 2–2.5 mm, central, cylindric with much broader base; surface viscid, finely rugulose, yellowish white (1–2A2) changing to pale violet on bruising, white mycelium present at the base. Context in pileus thin, pithy in stipe, yellowish white (1A2), almost immediately turning pale violet to greyish violet (17A–B3) on exposure, dull green (27E4) in KOH, brownish in guaiac and unchanging in FeSO 4. Latex moderate, watery white, turning cut lamellae pale violet. Taste very bitter. Odor pleasant. Spore print not obtained. Basidiospores 6.0– 7.5 –9.5 × 5.0– 6.3 –8.0 μm, (n = 30, Q = 1.14– 1.26 –1.49), subglobose to ellipsoid; ornamentation amyloid, up to 0.8–1.1 µm high, composed of isolated or aligned warts and ridges to form an incomplete reticulum; suprahilar spot inamyloid. Basidia 44.2–59.0 × 11.7–12.5 µm, subclavate, 4-spored; sterigmata 4.0–5.0 × 1.2–1.4 µm. Pleuromacrocystidia abundant, 58.0–103 × 7.9–11.0 µm, emergent up to 40.3 µm, subcylindric with fusoid, subfusoid, mucronate, capitate, subcapitate to appendiculate apices, thin-walled; content dense, crystalline, needlelike. Pleuropseudocystidia scarce to abundant, up to 3 µm wide, emergent, cylindrical to slightly tortuous, with rounded apex. Lamellae edge fertile with basidia and basidioles. Cheilomacrocystidia not found. Subhymenium up to 10.5 µm thick, cellular. Hymenophoral trama composed of lactifers and nests of sphaerocytes connected with connecting hyphae. Pileipellis up to 173.5 µm thick, an ixocutis to ixotrichoderm composed of interwoven, septate, mostly ascending hyphae (8.6–29.2 × 2.0–3.0 μm) intermixed with lactiferous hyphae. Stipitipellis up to 70.2 μm thick, an ixocutis, composed of interwoven, septate hyphae (7.5–27 × 1.2–1.5 μm). Clamp connections absent in all tissues. Habitat and distribution:—Growing solitary on soil in association with Castanopsis sp. in West Kameng district of Arunachal Pradesh. Additional specimen examined:— INDIA. Arunachal Pradesh, West Kameng district: Shergaon, N 27°09.216’, E 092°16.174’, Elev. 2369 m, 26 July 2019, I . Bera & K. Das, IB 19-066 (CAL 1877).Published as part of Bera, Ishika, Das, Kanad & Datta, Bejoysekhar, 2022, A new species of Lactarius sect. Uvidi (Russulaceae) from India, pp. 203-212 in Phytotaxa 576 (2) on page 206, DOI: 10.11646/phytotaxa.576.2.6, http://zenodo.org/record/746132
Application and Use of Multivariate Control Charts In a BTA Deep Hole Drilling Process
No full textDeep hole drilling methods are used for producing holes with a high length-to-diameter ratio, good surface finish and straightness. The process is subject to dynamic disturbances usually classified as either chatter vibration or spiralling. In this paper, we will focus on the application and use of multivariate control charts to monitor the process in order to detect chatter vibrations. The results showed that chatter is detected and some alarm signals occurs at time points which can be connected to physical changes of the process. --
Data envelopment analysis of clinics with sparse data: fuzzy clustering approach
No full textThis paper presents a method for utilizing Data Envelopment Analysis (DEA) with sparse input and output data using fuzzy clustering concepts. DEA, a methodology to assess relative technical efficiency of production units is susceptible to missing data, thus, creating a need to supplement sparse data in a reliable and accurate manner. The approach presented is based on a modified fuzzy c-means clustering using Optimal Completion Strategy (OCS) algorithm. This particular algorithm is sensitive to the initial values chosen to substitute missing values and also to the selected number of clusters. Therefore, this paper proposes an approach to estimate the missing values using the OCS algorithm, while considering the issue of initial values and cluster size. This approach is demonstrated on a real and complete dataset of 22 rural clinics in the State of Kansas, assuming varying levels of missing data. Results show the effect of the clustering based approach on the data recovered considering the amount and type of missing data. Moreover, the paper shows the effect that the recovered data has on the DEA scores
Image Search Engine for Digital History: A deep learning approach
No full textThis research investigates and describes an image search engine for digital history using deep learning technologies. It is part of the Engineering Historical Memory research, contributing to a multilingual and transcultural approach to decode-encode the treasure of human experience and transmit it to the next generation of world citizens. The engine provides a new way to search in online (historical) digital libraries using content-based image retrieval and makes linguistic metadata redundant. State-of-the-art deep learning methodologies in computer vision have been investigated and tested. These methodologies include both template-based matching and feature-based matching. A VGG16 Convolutional Neural Network based approach, called D2-Net, is concluded to provide the best basis. D2-Net is then further analyzed, improved, and optimized to run on a large dataset of more than 12k image combinations related to history, heritage, and art. The final implementation shows promising results with a precision of 0.96 and a recall of 0.44 on a challenging testing dataset. Future improvements include speed improvement and model training.Authors are listed in alphabetical order (Hardy-Littlewood Rule). https://github.com/EHM-Search-Engines/ISEDH-Deep-Learning Github repository containing the source code and documentation for this thesis.Engineering Historical MemoryElectrical Engineerin
Learning Deep Belief Networks from Non-Stationary Streams
No full text18.10.13 KB. Ok to add author version to spiral from LNCS; embargo period expired. SpringerDeep learning has proven to be beneficial for complex tasks such as classifying images. However, this approach has been mostly applied to static datasets. The analysis of non-stationary (e.g., concept drift) streams of data involves specific issues connected with the temporal and changing nature of the data. In this paper, we propose a proof-of-concept method, called Adaptive Deep Belief Networks, of how deep learning can be generalized to learn online from changing streams of data. We do so by exploiting the generative properties of the model to incrementally re-train the Deep Belief Network whenever new data are collected. This approach eliminates the need to store past observations and, therefore, requires only constant memory consumption. Hence, our approach can be valuable for life-long learning from non-stationary data streams. © 2012 Springer-Verlag
Beamforming for 3D Transesophageal Echocardiography
No full textIn this thesis, we study beamforming techniques that offer opportunities for 3D transesophageal echocardiography imaging, especially to achieve higher frame rates. In 3D TEE with a matrix transducer, two main challenges are to connect a large number of elements to a standard ultrasound system and to achieve a high volume rate (>200 Hz). We develop a prototype miniaturized matrix transducer for pediatric patients with micro-beamforming to reduce the channel count. Initially, we propose two dual stage beamforming techniques for 1D arrays to produce high-quality images with reduced channel count: one using fixed focused receive and another with a simple summation in receive (no delays). Because of their inapplicability to the prototype transducer, we propose multiline 3D ultrasound beamforming schemes that utilize the micro-beamforming capabilities. The proposed beamforming schemes use an angle-weighted combination of the neighboring overlapping sub-volumes to suppress the crossover artifacts that are typical for parallel beamforming and produce high-quality images at a high volume rate (~300 Hz). A similar beamforming scheme adapted for a newly designed prototype matrix adult TEE probe is used for in vivo 3D imaging of the heart of a healthy adult pig to produce good quality 3D images at a high frame rate. The proposed 3D beamforming scheme can easily be adapted for matrix probes with micro-beamforming capabilities to produce good quality volume images at a high volume rate, even for a very different layout of the transmit and receive arrays
Deep End Teacher Guide : Orange
No full textDr Mills is the invited author of the Deep End Series Teacher Guides by ERA publications. This 3-volume series for teachers is used in more than 200 schools in Australia, the USA, Canada, New Zealand, Sweden, Norway, and South America
Deep End Teacher Guide : Green
No full textDr Mills is also the invited author of the Deep End Series Teacher Guides by ERA publications. This 3-volume series for teachers is used in more than 200 schools in Australia, the USA, Canada, New Zealand, Sweden, Norway, and South America
Lactifluus tropicalis A. Ghosh, I. Bera, D. Chakr. & Hembrom 2022, sp. nov.
No full textLactifluus tropicalis A. Ghosh, I. Bera, D. Chakr. & Hembrom sp. nov. Figs. 2 & 3 MycoBank: MB 843967 GenBank: ON 202982 (nrITS, holotype), ON 202996 (nrITS); ON 202995 (nrLSU, holotype), ON 202997 (nrLSU); ON 007343 (rpb2, holotype), ON 212013 (rpb2). Etymology:— Tropicalis (Lat.) refers to the tropical distribution of the taxon. Diagnosis:— Lactifluus tropicalis is mainly separated from the closely related L. leoninus on the basis of its nonsulcate pileus margin, mild taste, unchanging latex on exposure, ixocutis to ixotrichoderm pileipellis, habitat and multigene molecular data. Holotype:— INDIA. West Bengal: Jhargram district, Jhargram city, N 22°25’01.2’’ E 87°00’13.4’’, Alt. 102 m, 12 th August 2021, A. Ghosh & D. Chakraborty, AGDC _21-05 (CAL 1873, holotype!). Description:— Pileus 25–100 mm diam., hemispheric to convex when young, gradually planoconvex to applanate with a broad shallow to deep depressed centre, becoming infundibuliform with maturity; surface dry, viscid when wet, smooth, velvety, sometimes finely wrinkled near the centre, light yellow to pastel yellow (3A4) when young gradually becoming butter- to straw-colour or yellowish white to, pale yellow (3–4A2–3) with maturity; margin entire, decurved to uplifted with age, often cracked at maturity. Lamellae up to 8 mm deep, decurrent, distant (4–5/ 10 mm at pileus margin), moderately thick, brittle, forked near the middle and margin; lamellulae in up to 5 series, yellowish white (2– 4A2); edge entire, smooth, concolorous. Stipe 27–40 × 7–20 mm, central, short, broadly clavate to cylindrical; surface dry, chalky white (1–2A1) with grayish yellow (4B3–4) spots, unchanging after bruising. Context thick in pileus and stipe, yellowish white (1–2A2), unchanging after bruising; turning deep to dark turquoise (24E–F7–8) in guaiacol and salmon pink (6A4) in FeSO 4 respectively. Taste mild. Latex watery to transparent, unchanging upon exposure. Odor pleasant. Spore print not recorded. Basidiospores (6.5–)6.9– 8.0 –9.2 × (6.0–)5.9– 6.8 –7.7(–8.0) μm, [n = 30, Q = 1.04– 1.17 –1.30(–1.31)], subglobose, broadly ellipsoid to ellipsoid; ornamentation amyloid, up to 0.6 μm high, composed of subconical, conical to sometimes elongated warts mostly connected by fine lines; suprahilar plage inamyloid. Basidia 42–57 × 9–11 µm, subclavate, 4-spored; sterigmata up to 9 µm long. Pleuromacrocystidia absent. Pleuropseudocystidia abundant, up to 35 µm emergent, 7.5–12 µm broad, subcylindrical to subclavate with capitate, moniliform, appendiculate or obtuse-rounded apices, thin-walled; content dense, heteromorphous, granular to crystalline. Lamellae edge sterile. Cheilocystidia not found. Subhymenium up to 37 µm thick, cellular, made up of pseudoparenchymatous cells. Hymenophoral trama composed of few nests of sphaerocytes connected with hyphae and intermixed with lactiferous hyphae. Pileipellis up to 150 µm thick, a transition between ixocutis to ixotrichoderm composed of interwoven, multiseptate, repent to uprising hyphae; terminal cells 45–100 × 2.0–4.5 μm, mostly cylindrical or subcylindrical with obtuse-rounded apex, thin-walled. Stipitipellis an ixocutis, up to 53 µm thick, composed of interwoven, multiseptate, rarely branched hyphae. Clamp connections absent in all tissues. Habitat:—Solitary to scattered, growing in ectomycorrhizal association with Shorea robusta in tropical deciduous forests. Additional specimens examined:— INDIA. West Bengal: Jhargram district, Lodhasuli, N 22°19’50’’ E 87°01’41’’, Alt. 80 m, 12 August 2020, I. Bera, IB 20-08; Jhargram district, Jhargram city, N 22°25’01.2’’ E 87°00’13.4’’, Alt. 102 m, 14August 2020, I. Bera, IB 20-053; Jharkhand: Rajmahal hills, Sahibganj district, Borio block, Pir-Baba Kairasol forest area, N 25°09’41.7’’ E 87°40’31.9’’, Alt. 125 m, 24 August 2021, M. E. Hembrom, MEH-21-09; Rajmahal hills, Pakur district, Hiranpur block, Talpahari to Tugutola forest area, N 24°37’02.6’’ E 87°40’45.2’’, Alt. 94 m, 26August 2021, A. Ghosh, AG 21-15 (JH).Published as part of Ghosh, Aniket, Bera, Ishika, Chakraborty, Dyutiparna, Hembrom, Manoj E., Verbeken, Annemieke & Das, Kanad, 2022, A new edible species of Lactifluus (Russulaceae) from Shorea robusta dominated forests in tropical India, pp. 277-287 in Phytotaxa 564 (3) on pages 284-285, DOI: 10.11646/phytotaxa.564.3.1, http://zenodo.org/record/709543
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