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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
251

Rapid Tooling Carbon Nanotube-Filled Epoxy for Injection Molding Using Additive Manufacturing and Casting Methods

Stockham, Corbin H. 28 September 2020 (has links)
No description available.
252

Using Corrective Feedback to Improve Grammatical Accuracy in Student Writing in the EFL Classroom / Att använda korrigerande feedback för att förbättra grammatiska färdigheter i elevtexter i engelskundervisningen.

Rau, Alexander, Johansson, Caroline January 2021 (has links)
With the rise of English as the go-to language in the world, it has also become an important subject in the Swedish education system, aimed at preparing students for the English requirements expected of them in higher education and business. However, communication and content have become the main focus in the classroom, with grammar and accuracy being judged as variably important from teacher to teacher. This has led to students feeling confident in speaking, but lacking the skills needed to create accurate and coherent texts, the effects of which are detrimental to their credibility and can have serious negative effects in the workplace. The aim of this paper is to investigate the efficacy of different methods of corrective feedback (CF) aimed at improving grammatical accuracy in student writing. Eight studies were selected, looking at different methods of CF. The results showed that CF is indeed effective, but that many factors such as language proficiency, previous experience, scope of CF and error type influence the outcome of the CF. The implications of this are very relevant to the English classroom in Sweden as the classroom is not homogenous and teachers must take care to become aware of each student’s individual needs, prior knowledge and preferences in order to maximize the effectiveness of the CF. Future research could explore the effects of Dynamic CF and peer-reviewing, providing students with many opportunities to write and revise short texts while simultaneously actively engaging with language form.
253

Second Language Learning Motivation and Investment in Warscapes: A Case Study of Successful English Learners from Afghanistan

Antoon, Brittany N. 13 July 2022 (has links)
No description available.
254

Subject-Verb Agreement Errors in Swedish 9th and 11th Grade Students’ English Written Production

Tsukanaka, Maiko January 2023 (has links)
This study aims to investigate possible factors contributing to subject-verb agreement errors in Swedish junior and senior high school students' English written production. The sample data is collected from the Swedish Learner English Corpus (SLEC), which comprises student texts produced in a classroom setting. The texts are randomly chosen but evenly distributed in terms of binary gender, school year, and type of high school program. In this study, the texts included in the scope are written by students attending a Swedish-speaking school with Swedish as their first language. Errors are classified as overgeneralization or transfer and further classified in relation to the subject type, the verb type, and the distance between the subject and the verb. The classification of all correct instances of subject-verb agreement is also performed to further investigate possible error explanations. A total of 41 agreement errors were found in 24 texts written by students in the 9th and 11th grades. The results show that overgeneralization is more frequent than transfer errors. Overgeneralization suggests that the students are aware of the third-singular form but do not always apply it correctly, while transfer errors show a potential lack of awareness or attention to the form. In both cases, the errors indicate that these students have not automatized the principle yet. Errors are often related to subject types “a pronoun” or “a noun/noun phrase" and the verb be, which is the most frequently used verb. Most of the errors occur when the subject and the verb are in immediate contact, and more than half of them involve a relative pronoun as subject, which indicates that the learners have misinterpreted the grammatical principle or have not fully acquired it. Overuse of the third-person singular form can also be an effect of teaching and explicit learning, which makes learners apply the form whenever it seems possible and relevant.
255

Students’ perceptions and use of teachers’ feedback on written assignments in EFL classrooms at a Swedish upper secondary school

Lie, Kamilla January 2022 (has links)
Providing written feedback is a time-consuming part of an English teacher’s work life and there are many ways in which feedback can be provided. According to the Swedish National Agency of Education (2011), teachers must provide their students with feedback. Studies have been conducted investigating feedback provision and teachers’ feedback practices, but few studies have shed light on the students’ perception of feedback, especially in Swedish, and even Nordic, contexts. This study investigated students’ perception and use of teacher feedback on written assignments in an EFL (English as a foreign language) classroom in mid-Sweden. The study investigated both student perception of feedback, with specific focus on WCF (written corrective feedback), and students’ use of the feedback. The method used for data collection was a semi-structured internet survey containing 21 questions. The participants were 30 upper secondary school students. The results of the study showed that students mostly perceived feedback as important and useful, especially when it contained concrete tips and proposals for text improvement. They regarded CF and WCF as important as they wanted to become aware of what errors they made to avoid making those in future writing. Nevertheless, they reported that too extensive feedback (unfocused CF) was not preferred. Both positive and negative feedback were considered useful for future writing and a large majority read the feedback they received every time. Feedback provided together with a grade was also read by the students, as they wanted to have information about strengths and weaknesses in the text as well as motivation for the grade. To conclude, feedback was mostly perceived as important and useful, and the students used it to improve their writing.
256

Authentic Out-of-Class Communication in Study Abroad Programs: Success Defined by Continued Motivation and Cultural Appreciation

Olsen, Erin Fairlight 13 August 2007 (has links) (PDF)
The benefits of study abroad experience in second language acquisition have evolved from unchallenged assumption to the focus of rigorous study in the past several decades. The benefits of out-of-class contact with natives have likewise been questioned. Despite conflicting evidence of its benefit, students frequently cite out-of-class conversations with natives as among the most beneficial aspects of their language acquisition experience. Reviewing the extant literature, this study narrows in on authentic communication-that is, meaningful out-of-class contact with natives, in which students are able to genuinely express themselves and their personality-as a previously unanalyzed element of study abroad research. It is suggested that such conversations contribute to the success of study abroad students, particularly as it is measured by student motivation leading to continued engagement with the language study post-study abroad and cultural understanding. Surveys and essays by 85 students in two separate Arabic study abroad programs to the Middle East were analyzed. The findings bear on the efforts of educators to design and prepare students for successful study abroad programs.
257

A Corpus of Second Language Attrition Data

Smith, Derrell R. 04 December 2007 (has links) (PDF)
This report addresses the lack of progress in the field of Second Language Attrition (L2A). Review of L2A history and literature show this to be cause by lack of appropriate data. Five criteria for appropriate data are suggested and a corpus of L2A data (57,000 words, spoken Spanish) which meets the criteria is presented. The history of the corpus is explained in detail, including subject selection, instruments and methods of collection, and markup -- XML was used to annotate the corpus with nineteen categories of speech errors, adapted from Nation's (2001) "Learning Vocabulary in Another Language." An example analysis of how the corpus can be used for L2A research is provided with step-by-step instructions on writing scripts for data extraction and post-processing in the Perl language. Source code is included in the text. Complete beginners tutorials on the XML and Perl languages are included in the appendices. The report also introduces a website, developed specifically to host the corpus, where researchers may register, download the corpus and share work they have done with the corpus. All files used in the example project, as well as this report, are available for download at the website. Findings from the example analysis support Plateau Phases, the Regression Hypothesis and suggest the Threshold Hypothesis does not apply to marked forms. This shows the corpus to be of great value to the L2A research community.
258

Insights into Chinese Second Language Acquisition: The Relationship between Glossing and Vocabulary Recall in Reading

DeVellis, Steven S 09 August 2023 (has links) (PDF)
Reading enhancement strategies are an important tool utilized by foreign language teachers. One of the most common types of during-reading assistance is the marginal gloss, which provides first language (L1) translations of selected foreign language (L2) terms in the margins of a text. Glossing is an inherently individual approach to reading. It is predominantly motivation-driven, and provides as much assistance to the learner as he or she is willing to use it. Studies to this point have been largely inconsistent in regards to the exact usefulness of glossing, analyzing many variables such as the size, scope, and type of gloss, as well as the language read. The present study uses glossing while reading a text to investigate whether glossing helps L2 learners learn Chinese and/or helps with their long-term memory. The text was adapted from a pedagogical website for Western learners of Chinese, and the gloss comprised six of the most meaningful terms in the text. A total of 10 students learning Chinese as a foreign language participated in the present study. These beginner learners were divided into one of two groups, where the only variable was the presence or absence of a marginal vocabulary gloss. The participants were tasked with reading a short passage in Chinese while responding to comprehension questions in English. Group A read the text without the assistance of a gloss, while Group B read while using a gloss. Participants had access to the text (and gloss, if applicable) while working on the text. One week later, participants were tasked with remembering the meanings of the selected Key Terms which appeared in the passage. They were also asked to briefly summarize the text in as much detail as they remembered. In analyzing the responses of the participants after both Part 1 and Part 2, it was found that glossing provided minimal assistance in regards to vocabulary recall in the future, but did much more to aid in comprehension at the time of reading. In addition, L1 translations which appear in the gloss are more likely to be remembered than the L2 terms to which they correspond. Moreover, this study sheds light on various language acquisition theories, such as incidental vocabulary learning, involvement load, cognitive load, and Input Hypothesis. The results support the efficacy of glossing on during-reading comprehension through the aforementioned theories. Evidence of many of these theories of language processing are evident in the responses of each of the participants and will be analyzed on a case-by-case basis.
259

Paradigm Shift from Vague Legal Contracts to Blockchain-Based Smart Contracts

Upadhyay, Kritagya Raj 07 1900 (has links)
In this dissertation, we address the problem of vagueness in traditional legal contracts by presenting novel methodologies that aid in the paradigm shift from traditional legal contracts to smart contracts. We discuss key enabling technologies that assist in converting the traditional natural language legal contract, which is full of vague words, phrases, and sentences to the blockchain-based precise smart contract, including metrics evaluation during our conversion experiment. To address the challenge of this contract-transformation process, we propose four novel proof-of-concept approaches that take vagueness and different possible interpretations into significant consideration, where we experiment with popular vendors' existing vague legal contracts. We show through experiments that our proposed methodologies are able to study the degree of vagueness in every interpretation and demonstrate which vendor's translated-smart contract can be more accurate, optimized, and have a lesser degree of vagueness. We also incorporated the method of fuzzy logic inside the blockchain-based smart contract, to successfully model the semantics of linguistic expressions. Our experiments and results show that the smart contract with the higher degrees of truth can be very complex technically but more accurate at the same time. By using fuzzy logic inside a smart contract, it becomes easier to solve the problem of contractual ambiguities as well as expedite the process of claiming compensation when implemented in a blockchain-based smart contract.
260

A phylogenetic perspective on fine root ecology: assessing the role of root evolution on fine root functional traits and ecological interactions in woody angiosperms.

Valverde-Barrantes, Oscar Jesus 06 December 2013 (has links)
No description available.

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