698 research outputs found
A descriptive study on ESL learnersââŹâ˘ vocabulary knowledge through cognitive and metacognitive strategies
The present research was carried out to study the cognitive and metacognitive vocabulary learning strategies of 36 ESL learnersââŹâ˘. SchmittââŹâ˘s Vocabulary Learning Strategies questionnaire was used to conduct the study. The study revealed the subsequent array of cognitive and metacognitive strategies employed by ESL learners. Additionally, semi-structured interviews were also conducted with 10 ESL learnersââŹâ˘ who completed the questionnaire to get more reliable information about learnersââŹâ˘ strategies with vocabulary learning. The findings indicated that ââŹËUsing English Language MediaââŹâ˘, ââŹËVerbal repetitionââŹâ˘, ââŹËTake notes in classââŹâ˘ were the most popular strategies, whereas ââŹËSkip or pass new wordââŹâ˘ and ââŹËPut English labels on physical objectsââŹâ˘ were least used. The results of this paper provide many implications for English language teaching. Detailed explanations of the participantsââŹâ˘ cognitive and metacognitive strategies were given in the discussion
Neutrino oscillation probabilities: Sensitivity to parameters
We study in detail the sensitivity of neutrino oscillation probabilities to
the fundamental neutrino parameters and their possible determination through
experiments. The first part of the paper is devoted to the broad theme of
isolating regions in the neutrino (and anti-neutrino) energy and propagation
length that are sensitive to the oscillation parameters. Such a study is
relevant to neutrinos both from the Earth's atmosphere or from a neutrino
factory. For completeness we discuss the sensitivity, however small, to the
parameters involved in a three-generation framework, and to the Earth matter
density profile. We then study processes relevant to atmospheric neutrinos
which are sensitive to and allow precision measurements of the mixing angle
theta_23 and mass-squared difference delta_32 apart from the mixing angle
theta_13. Crucial to this analysis is charge identification; detectors having
this capability can isolate these matter effects. In particular, we address the
issue of using matter effects to determine whether the mixing angle theta_23 is
maximal, and, if not, to explore how well its octant can be determined. When
realistic detector resolutions are included, we find that deviations of about
15% (20%) from a maximal value of sin^2 theta_23=1/2 can be measured at 95%
(99%) CL provided theta_13 is non-zero, sin^2 theta_13 >= 0.015, and the
neutrino mass ordering is normal, with fairly large exposures of 1000
kton-years.Comment: 37 pages Latex file, 30 eps figure files; minor typos fixe
DIAGNOSING ESL LEARNERSâ VOCABULARY KNOWLEDGE THROUGH MEMORY STRATEGIES
Purpose of the study: The present study diagnoses the vocabulary knowledge employed by ESL learnersâ through memory strategies. Schmiitâs (1990) Taxonomy of Vocabulary Learning Strategies (VLS) questionnaire was adopted and administered to 93 ESL learners. In order to get authenticities about the ESL learnersâ memory strategies with vocabulary learning, semi-structured interviews were also conducted with 30 participants who completed the questionnaire. The result exposed the subsequent array of memory strategies used by ESL learners from the most frequent to the least frequent strategies, particularly findings revealed that âUse new word in sentencesâ, âStudy word with a pictorial representation of its Meaningâ, âConnect word to a personal experienceâ are most popular whereas âUse scales for gradable adjectivesâ, âRelating word to unrelated items (Peg method)â were least used memory strategies.
Methodology: Schmittâs Vocabulary Learning Strategies Questionnaire (VLSQ) (1997) was favored to diagnose the vocabulary knowledge through memory strategies of 93 ESL learners. Initially the responses were collected through Google Forms. Additionally, 30 ESL learners were randomly selected for interviews in accordance to reassure participantsâ comprehension of the subject matters.
Main Findings: The study finds effective result among 93 ESL learners in acquiring vocabulary knowledge while using memory strategies with the assistance of technological modalities. It also listed the most frequent and least frequent use of memory strategies in Schmittâs Vocabulary Learning Strategies Questionnaire (VLSQ) (1997).
Applications of this study: The present study is conducted in English Language Laboratory, where ESL learnersâ can be benefitted and the learners can use these memory strategies while learning a new vocabulary when encountering a word.
Novelty/Originality of this study: The existing technological modalities will assist the learners to correlate more effectively. Subject and language experts in the field can design the instructional materials and tools to assist ESL learners to improve vocabulary knowledge through memory strategies
Technological modality to influence persuasive and argumentative vocabulary for effective communication with reference to selected TED talk videos
English as the Second language learning recently gained attention in the field of research. The ESL (English as Second Language) learners need vocabulary enhancement and fluency for proficiency of the language which can be achieved through training. By learning and practicing a language with enhanced vocabulary will increase the vocabulary. TED (Technology, Entertainment, and Design) talks are a worldâs biggest digital platform for public speaking. Vocabulary elements given in the TED talks can be defined as a lexicon of language which plays a significant role in communication. The aim of this research conveys the significant role of TED talk videosâ speaker and its influence towards its audiences. This can be achieved only by practical use of vocabulary by the ESL and EFL learners. In this research work, Persuasive and Argumentative vocabulary in the transcript of random 25 TED talk videos with time frame of 0-6mins, and sorted by ânewestâ tab are analyzed. Also, in-depth analyses of both Persuasive and Augmentative keywords used and its frequencies are listed out from the 25 videos. This research significantly concludes that for effective communication, the learner has to be proficient in vocabulary acquisition
Novel frame model for mistuning analysis of bladed disc systems
The work investigates the application of a novel frame model to reduce the computational cost of the mistuning analysis of bladed disc systems. A full-scale finite element (FE) model of the bladed disc is considered as benchmark. The single blade frame configuration is identified via an optimization process. The individual blades are then assembled by 3D springs, whose parameters are determined via calibration process. The dynamics of the novel beam frame assembly is also compared to those obtained from three state-of-the-art FE-based reduced order models (ROMs): a lumped parameter approach; a Timoshenko beam assembly, and component mode synthesis (CMS) based techniques with free and fixed interfaces. The development of these classical ROMs to represent the bladed disc is also addressed in detail. A methodology to perform the mistuning analysis is then proposed and implemented. A comparison of the modal properties and forced response dynamics between the aforementioned ROMs and the full-scale FE model is presented. The case study demonstrates that the beam frame assembly can predict the variations of the blade amplitude factors with results being in agreement with the full-scale FE model. The CMS based ROMs underestimate the maximum amplitude factor, while the results obtained from beam frame assembly are generally conservative. The beam frame assembly is 4 times more computationally efficient than the CMS fixed-interface approach. This study proves that the beam frame assembly can efficiently predict the mistuning behavior of bladed discs when low order modes are of interest
Scaling of fluctuation for Directed polymers with random interaction
Using a finite size scaling form for reunion probability, we show numerically
the existence of a binding-unbinding transition for Directed polymers with
random interaction. The cases studied are (A1) two chains in 1+1 dimensions,
(A2) two chains in 2+1 dimensions and (B) three chains in 1+1 dimensions. A
similar finite size scaling form for fluctuation establishes a disorder induced
transition with identical exponents for cases A2 and B. The length scale
exponents in all the three cases are in agreement with previous exact
renormalization group results.Comment: Revtex, 4 postscript figures available on request (email:
[email protected]); To appear in J. Phys. A Letter
Antimicrobial silver coating using PVD-PECVD system
Physical Vapor Deposition - Plasma Enhanced Chemical Vapor Deposition (PVD-PECVD) systems are used exclusively for deposition and doping of carbonaceous films. However, this technique presents promising characteristics for the deposition of silver nanoparticles (Ag-NPs) on textiles, which meet the industrial demand for a more versatile and efficient methodology than the Magnetron Sputtering (MS) technique. In this regard, cotton textiles were coated with Ag-NP films produced by PVD-PECVD, and compared in terms of technical Physical vapor deposition - plasma enhanced chemical vapor deposition (PVD-PECVD) system has been used exclusively for deposition and doping of carbonaceous films [silver nanoparticles (Ag-NPs)] on cotton fabrics and the findings are compared, in terms of technical efficiency and microbial inhibition, with those of the magnetron sputtering (MS) technique. It is found that the proposed technique presents promising characteristics for the deposition of silver nanoparticles (Ag-NPs) on textiles, which meet the industrial demand.efficiency and microbial inhibition, with findings in the literature for the MS technique
New Criticality of 1D Fermions
One-dimensional massive quantum particles (or 1+1-dimensional random walks)
with short-ranged multi-particle interactions are studied by exact
renormalization group methods. With repulsive pair forces, such particles are
known to scale as free fermions. With finite -body forces (m = 3,4,...), a
critical instability is found, indicating the transition to a fermionic bound
state. These unbinding transitions represent new universality classes of
interacting fermions relevant to polymer and membrane systems. Implications for
massless fermions, e.g. in the Hubbard model, are also noted. (to appear in
Phys. Rev. Lett.)Comment: 10 pages (latex), with 2 figures (not included
Theory of tricriticality for miscut surfaces
We propose a theory for the observed tricriticality in the orientational
phase diagram of Si(113) misoriented towards [001]. The systems seems to be at
or close to a very special point for long range interactions.Comment: Revtex, 1 ps figur
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