Digital Commons Network^™

A Robust Smes Control For Enhancing Stability Of Distribution Systems Fed From Intermittent Wind Power Generation, Sayed Said, Mokhtar Aly, Balint Hartmann

Turkish Journal of Electrical Engineering and Computer Sciences

The voltage and frequency stability issues of power systems are the main challenges that arise from high penetration levels of wind energy systems. This paper presents an effective solution for voltage and frequency stability problems by using a superconducting magnetic energy storage (SMES) system controlled with a fuzzy logic controller (FLC). The proposed control system can suppress the voltage and frequency fluctuations due to the high variations of wind speed. In addition, the proposed control system is suitable for both balanced and unbalanced distribution systems with high penetration levels of wind turbines (WTs). A squirrel cage induction generator (SCIG) is …

A New Model To Determine The Hierarchical Structure Of The Wireless Sensor Networks, Resmi̇ye Nasi̇boğlu, Zülküf Teki̇n Erten

Turkish Journal of Electrical Engineering and Computer Sciences

Wireless sensor networks are one of the rising areas of scientific research. Common purpose of these investigations is usually constructing optimal structure of the network by prolonging its lifetime. In this study, a new model has been proposed to construct a hierarchical structure of wireless sensor networks. Methods used in the model to determine clusters and appropriate cluster heads are k-means clustering and fuzzy inference system (FIS), respectively. The weighted averaging based on levels (WABL) defuzzification method is used to calculate crisp outputs of the FIS. A new theorem for calculation of WABL values has been proved in order to …

A Fuzzy Model Of Directional Relationships From The Phi-Descriptor, Mohammad Naeem, Nasir Ahmad, Sahib Khan, Asma Gul

Turkish Journal of Electrical Engineering and Computer Sciences

Directional spatial relationships are a category of spatial relationships and have applications in the fields of image processing, geographic information systems, natural language processing, and robot navigation. They can be directly extracted from images or can be interpreted from a type of image descriptors called the relative position descriptors. Examples of relative position descriptors are the angle histogram, the force histogram, and the recently proposed phi-descriptor. So far, fuzzy models of directional spatial relationships from the angle histogram and force histograms have been proposed in the literature. These include the compatibility method, the aggregation method, and the method of effective …

Data Analysis Through Social Media According To The Classified Crime, Serkan Savaş, Nuretti̇n Topaloğlu

Turkish Journal of Electrical Engineering and Computer Sciences

The amount and variety of data generated through social media sites has increased along with the widespread use of social media sites. In addition, the data production rate has increased in the same way. The inclusion of personal information within these data makes it important to process the data and reach meaningful information within it. This process can be called intelligence and this meaningful information may be for commercial, academic, or security purposes. An example application is developed in this study for intelligence on Twitter. Crimes in Turkey are classified according to Turkish Statistical Institute criminal data and keywords are …

A Tree-Based Approach For English-To-Turkish Translation, Özge Bakay, Begüm Avar, Olcay Taner Yildiz

Turkish Journal of Electrical Engineering and Computer Sciences

In this paper, we present our English-to-Turkish translation methodology, which adopts a tree-based approach. Our approach relies on tree analysis and the application of structural modification rules to get the target side (Turkish) trees from source side (English) ones. We also use morphological analysis to get candidate root words and apply tree-based rules to obtain the agglutinated target words. Compared to earlier work on English-to-Turkish translation using phrase-based models, we have been able to obtain higher BLEU scores in our current study. Our syntactic subtree permutation strategy, combined with a word replacement algorithm, provides a 67 % relative improvement from …

Automatic Concept Identification Of Software Requirements In Turkish, Fatma Bozyi̇ği̇t, Özlem Aktaş, Deni̇z Kilinç

Turkish Journal of Electrical Engineering and Computer Sciences

Software requirements include description of the features for the target system and express the expectations of users. In the analysis phase, requirements are transformed into easy-to-understand conceptual models that facilitate communication between stakeholders. Although creating conceptual models using requirements is mostly implemented manually by analysts, the number of models that automate this process has increased recently. Most of the models and tools are developed to analyze requirements in English, and there is no study for agglutinative languages such as Turkish or Finnish. In this study, we propose an automatic concept identification model that transforms Turkish requirements into Unified Modeling Language …

Turkish Lexicon Expansion By Using Finite State Automata, Mustafa Burak Öztürk, Burcu Can Buğlalilar

Turkish Journal of Electrical Engineering and Computer Sciences

Turkish is an agglutinative language with rich morphology. A Turkish verb can have thousands of different word forms. Therefore, sparsity becomes an issue in many Turkish natural language processing (NLP) applications. This article presents a model for Turkish lexicon expansion. We aimed to expand the lexicon by using a morphological segmentation system by reversing the segmentation task into a generation task. Our model uses finite-state automata (FSA) to incorporate orthographic features and morphotactic rules. We extracted orthographic features by capturing phonological operations that are applied to words whenever a suffix is added. Each FSA state corresponds to either a stem …

Lexicon-Based Emotion Analysis In Turkish, Mansur Alp Toçoğlu, Adi̇l Alpkoçak

Turkish Journal of Electrical Engineering and Computer Sciences

In this paper, we proposed a lexicon for emotion analysis in Turkish for six emotional categories happiness, fear, anger, sadness, disgust, and surprise. Besides, we also investigated the effects of a lemmatizer and a stemmer, two term-weighting schemes, four lexicon enrichment methods, and a term selection approach for lexicon construction. To do this, we generated Turkish emotion lexicon based on a dataset, TREMO, containing 25,989 documents. We then preprocessed the documents to obtain dictionary and stem forms of each term using a lemmatizer and a stemmer. Afterwards, we proposed two different weighting schemes where term frequency, term-class frequency and mutual …

A Polarity Calculation Approach For Lexicon-Based Turkish Sentiment Analysis, Gökhan Yurtalan, Murat Koyuncu, Çi̇ğdem Turhan

Turkish Journal of Electrical Engineering and Computer Sciences

Sentiment analysis attempts to resolve the senses or emotions that a writer or speaker intends to send across to the people about an object or event. It generally uses natural language processing and/or artificial intelligence techniques for processing electronic documents and mining the opinion specified in the content. In recent years, researchers have conducted many successful sentiment analysis studies for the English language which consider many words and word groups that set emotion polarities arising from the English grammar structure, and then use datasets to test their performance. However, there are only a limited number of studies for the Turkish …

A Hybrid Sentiment Analysis Method For Turkish, Buket Erşahi̇n, Özlem Aktaş, Deni̇z Kilinç, Mustafa Erşahi̇n

Turkish Journal of Electrical Engineering and Computer Sciences

This paper presents a hybrid methodology for Turkish sentiment analysis, which combines the lexicon-based and machine learning (ML)-based approaches. On the lexicon-based side, we use a sentiment dictionary that is extended with a synonyms lexicon. Besides this, we tackle the classification problem with three supervised classifiers, naive Bayes, support vector machines, and J48, on the ML side. Our hybrid methodology combines these two approaches by generating a new lexicon-based value according to our feature generation algorithm and feeds it as one of the features to machine learning classifiers. Despite the linguistic challenges caused by the morphological structure of Turkish, the …

Extending A Sentiment Lexicon With Synonym--Antonym Datasets: Swnettr++, Fati̇h Sağlam, Burkay Genç, Hayri̇ Sever

Turkish Journal of Electrical Engineering and Computer Sciences

In our previous studies on developing a general-purpose Turkish sentiment lexicon, we constructed SWNetTR-PLUS, a sentiment lexicon of 37K words. In this paper, we show how to use Turkish synonym and antonym word pairs to extend SWNetTR-PLUS by almost 33 % to obtain SWNetTR++, a Turkish sentiment lexicon of 49K words. The extension was done by transferring the problem into the graph domain, where nodes are words, and edges are synonym--antonym relations between words, and propagating the existing tone and polarity scores to the newly added words using an algorithm we have developed. We tested the existing and new lexicons …

Hydrogen Production System With Fuzzy Logic-Controlled Converter, Sali̇h Nacar, Seli̇m Öncü

Turkish Journal of Electrical Engineering and Computer Sciences

Electrolyte current must be controlled in the water electrolysis systems. For this purpose, the power converter for the cell stack of the electrolyzer used in industrial hydrogen production is realized. A series resonant converter, which is suitable for high input voltage and low output current applications, is used as power stage of the electrolyzer. The high-frequency transformer is used for the impedance matching. While the system is running, the electrical resistance of the electrolyzer changes continuously; thus, fuzzy logic controller (FLC) is used to control the output current of the power converter. In this study, a 700-W converter prototype is …

Fast Nonsingular Terminal Decoupled Sliding-Mode Control Utilizing Time-Varying Sliding Surfaces, Ferhun Yorgancioğlu, Soydan Redif

Turkish Journal of Electrical Engineering and Computer Sciences

In this paper, a fast form of nonsingular, terminal, decoupled, sliding-mode control, which utilizes time-varying sliding surfaces, is proposed for a class of fourth-order, single-input, multioutput, nonlinear systems. The novel control law features a fast term, in the manner of fast terminal sliding-mode control, which markedly improves the finite-time sliding-mode convergence speed near zero. Numerical simulation results, which are illustrated with a cart-pole inverted pendulum system and a ball-beam system, demonstrate that the proposed control law achieves, in general, favorable transient response and lower steady-state errors compared to state-of-the-art decoupled terminal sliding-mode control methods.

Contextual Interference In Speech Motor Learning Secondary To Similar Phonemes, Katelyn M. Bond

Capstones and Honors Theses

Purpose: The contextual interference (CI) effect is a motor learning phenomenon where learners experience difficulty during training resulting in poor performance; however, improved performance is observed in transfer conditions. Different variables elicit a CI effect, and the purpose of this study is to investigate whether phoneme (or sound) similarity may result in a CI effect during speech motor learning.

Method: The study included twenty-nine participants whose hearing and speech abilities were within the normal range. Participants were randomly assigned to one of two training sessions involving nonwords with either similar or dissimilar phonemes. Each training session included nonword repetition training …

An Empirical Inquiry Into The Use Of Originalism: Fourth Amendment Jurisprudence During The Career Of Justice Scalia, Lawrence Rosenthal

UC Law Journal

There is likely no methodological question of greater importance to constitutional law than whether adjudication should be based on the original meaning of the Constitution’s text, or instead reflect an evolving understanding in light of felt experience. Little effort, however, has been made to test empirically the claim of originalists that their methodology offers an effective vehicle for constitutional adjudication.

This study is the first to assess the extent to which original meaning, in practice, proves able to resolve constitutional litigation. To do so, it examines Fourth Amendment jurisprudence during the career of a self-proclaimed originalist, Justice Antonin Scalia. Cases …

The Mañana Complex: A Revelatory Narrative Of Teachers’ White Innocence And Racial Disgust Toward Mexican–American Children, Amanda Morales, Elvira Abrica, Socorro Herrera

Department of Teaching, Learning, and Teacher Education: Faculty Publications

This paper presents selected findings from an ethnographic case study of at a public junior high school. Analysis of White teachers’ discourse implicated a perspective of Mexican–American children that we describe as a mañana complex, a perceived association between Mexican–Americans and the term “mañana” (Spanish: “tomorrow”). We outline how this mañana complex among White teachers is indicative of historical racial tropes of Mexicans in the United States while also reflecting current anti-Mexican discourse emboldened and made more fervent by the current US presidential administration. Ultimately, the mañana complex is an example of both racial disgust toward Mexican–American children (Matias and …

Representation Of Unaccompanied Migrant Children From Central America In The United States: Media Vs. Migrant Perspectives, Theresa Catalano, Jessica Mitchell-Mccollough

Department of Teaching, Learning, and Teacher Education: Faculty Publications

This chapter examines the representation of unaccompanied minors fleeing Central America (namely Honduras, Guatemala and El Salvador) in U.S. online national news sources over a one-year period and compares this to the way these children talk about their own perceptions of migration and their motivation for moving. Data collection consisted of online news reports on unaccompanied minors from Central America in the United States as well as interviews with children collected from the United Nations Refugee Agency (UNHCR) and other humanitarian organizations. Multimodal critical discourse analysis reveals a qualitative difference in discourse (e.g., use of metaphor, metonymy, deixis and visual …

How Do Teachers Use Comics To Promote Engagement, Equity, And Diversity In Science Classrooms?, Camilla Matuk, Talia Hurwich, Amy Spiegel, Judy Diamond

World of Viruses

Equitable learning opportunities are critical to the goals of science education. However, major curriculum standards are vague on how to achieve equity goals, and educators must often develop their own resources and strategies to achieve equity goals. This study examines how educators used a comic book series designed to interest youth in virology as a way to make science more broadly appealing to their diverse students. We begin with the notion of Pedagogical Design Capacity, which describes a dynamic relationship between teachers and their tools and the ability for teachers to perceive and leverage affordances of artifacts as tools in …

Teaching English Language Learners To Vet Their Sources In The Post-Truth Paradigm, Megan Hodge

VCU Libraries Faculty and Staff Publications

According to the Institute of International Education's Open Doors report, the number of international students studying in the United States exceeded one million for the first time in 2016. Many of these students have insufficient command of the English language to pass the TOEFL or IELTS examinations required for enrollment at U.S. institutions of higher education, and as a result, programs designed to teach proficiency in the English language have been developed at some of these universities. In addition to English grammar and vocabulary, some programs also seek to acculturate students to Western academic norms such as critical thinking, academic …

Risk Assessment For Marine Construction Projects, Abdulrahman Mohammed Alansari

CGU Theses & Dissertations

Marine-construction projects are becoming increasingly important for the development of the maritime industry. However, such increases are hampered by various risks that can significantly impact growth. Natural forces, political events, administrative and operational mistakes, equipment failures, external attacks such as arson, and economic events are some of the major risks faced by firms in this industry. Researchers have paid little attention on marine- construction risk assessment, despite the importance of such research.

This study sought to develop a generic risk-levels predictor framework, using the integrated definition function model (IDEF0) and the case-based reasoning approach (CBR), to predict levels of risk …

Towards Misleading Connection Mining, Md Main Uddin Rony

Electronic Theses and Dissertations

This study introduces a new Natural Language Generation (NLG) task – Unit Claim Identification. The task aims to extract every piece of verifiable information from a headline. The Unit Claim identification has applications in other domains; such as fact-checking where the identification of each verifiable information from a check-worthy statement can lead to an effective fact-check. Moreover, the extracting of the unit claims from headlines can identify a misleading news article, by mapping evidence from contents. For addressing the unit claim identification problem, we outlined a set of guidelines for data annotation, arranged in-house training for the annotators and obtained …

The Impact Of Playful Ironic Branded Entertainment On Consumer Behavior, Phubest Phirakulwanich

Chulalongkorn University Theses and Dissertations (Chula ETD)

The objective of this study was to investigate the impact of playful ironic branded entertainment on consumer behavior, including understanding, attitude toward the brand, attitude toward the branded entertainment, source characteristics, and purchase intention, on a low-involvement product, Milo, a chocolate malt beverage. Pre-experimental setting, with static group design, was employed to collect data from 120 undergraduate students at the Faculty of Economics, Thammasat University, during April 2020. The result indicated that both playful ironic branded entertainment and non-playful ironic branded entertainment gave similar impacts on consumer behavior. Attitude toward the brand was the only sub-variable that the playful ironic …

ความสัมพันธ์ระหว่างภาษาและภาพตัวแทนบุคคลพ้นโทษในวาทกรรมสนับสนุนบุคคลพ้นโทษในสื่อสาธารณะ, นครินทร์ สำเภาพล

Chulalongkorn University Theses and Dissertations (Chula ETD)

วิทยานิพนธ์นี้มีวัตถุประสงค์เพื่อศึกษาความสัมพันธ์ระหว่างภาษากับภาพตัวแทนของบุคคลพ้นโทษในวาทกรรมสนับสนุนบุคคลพ้นโทษในสื่อสาธารณะ ด้วยแนววาทกรรมวิเคราะห์เชิงวิพากษ์ตามแนวภาษาศาสตร์ เก็บข้อมูลวาทกรรมที่มีเนื้อหากล่าวถึงบุคคลพ้นโทษในเชิงสนับสนุนจากสื่อที่เผยแพร่สู่สาธารณชนในวงกว้าง ได้แก่ หนังสือพิมพ์รายวัน 6 ชื่อฉบับ เว็บไซต์ของหน่วยงานราชการที่เกี่ยวข้อง วารสารราชทัณฑ์ และวีดิทัศน์รายการโทรทัศน์ที่มีเนื้อหาเกี่ยวข้อง โดยศึกษาข้อมูลที่เผยแพร่ในระหว่างปี พ.ศ. 2553 – 2560 ปี พ.ศ. 2553 เป็นปีที่กระทรวงยุติธรรมเริ่มนำแนวคิด “คืนคนดีสู่สังคม” มาใช้ในงานราชทัณฑ์ ผลการวิเคราะห์กลวิธีทางภาษาในการนำเสนอภาพตัวแทน พบกลวิธีทางภาษาได้แก่ การเลือกใช้คำหรือกลุ่มคำ การใช้ประโยคที่สัมพันธ์กันแบบเหตุ – ผล การใช้ประโยคที่สัมพันธ์กันแบบขัดแย้ง การใช้ประโยคที่สัมพันธ์กันแบบเงื่อนไข การใช้อุปลักษณ์ การใช้สำนวน การใช้มูลบท การใช้คำถามเชิงวาทศิลป์ การใช้สหบท การใช้เสียงของบุคคลพ้นโทษ และ การให้รายละเอียด ภาพตัวแทนที่ประกอบสร้างจากกลวิธีทางภาษาเหล่านี้มีทั้งภาพตัวแทนด้านบวก ได้แก่ บุคคลพ้นโทษบางส่วนเป็นคนดีและไม่ได้กระทำผิดโดยสันดาน บุคคลพ้นโทษเป็นผู้ผ่านกระบวนการบำบัดฟื้นฟูอย่างดี บุคคลพ้นโทษเป็นผู้ที่ กลับตัวกลับใจเป็นคนดีแล้ว และบุคคลพ้นโทษบางส่วนเป็นผู้ประสบความสำเร็จในการดำเนินชีวิต ภาพตัวแทนด้านลบ ได้แก่ บุคคลพ้นโทษเป็นผู้มีประวัติการกระทำความผิดติดตัว บุคคลพ้นโทษคือคนที่ยังไม่เปลี่ยนแปลงพฤติกรรมและมีแนวโน้มจะ กระทำผิดซ้ำ และบุคคลพ้นโทษเป็นบุคคลที่น่าหวาดกลัวและมักสร้างความเดือดร้อนแก่สังคม และภาพตัวแทนที่มีหลายแง่มุม คือ บุคคลพ้นโทษเป็นผู้ด้อยโอกาสที่สังคมไม่ยอมรับและประสบปัญหาการดำเนินชีวิต เมื่อพิจารณาปัจจัยทางสังคมวัฒนธรรม พบว่างานราชทัณฑ์ไทย นโยบาย "คืนคนดีสู่สังคม" ปัญหาในกระบวนการบำบัดฟื้นฟูผู้ต้องขังและวาทกรรมข่าวเกี่ยวกับความล้มเหลวในการจัดการเรือนจำ ข้อจำกัดในด้านการประกอบอาชีพ อคติเดิมในสังคม วาทกรรมอื่นที่แข่งขันกับวาทกรรมสนับสนุนบุคคลพ้นโทษ แนวคิดเรื่องกฎแห่งกรรมในพระพุทธศาสนา และแนวคิดเรื่อง ความเมตตากรุณา น่าจะมีอิทธิพลในการประกอบสร้างภาพตัวแทนบุคคลพ้นโทษ ผลการวิเคราะห์ชี้ให้เห็นว่าการสื่อสารกับสังคมเพื่อสนับสนุนบุคคลพ้นโทษยังพบรูปภาษาหลายลักษณะที่ประกอบสร้างภาพตัวแทนด้านลบไปพร้อมกันด้วยโดยที่ผู้ผลิตวาทกรรมอาจไม่รู้ตัวซึ่งอาจส่งผลให้เกิดการตอกย้ำอคติเดิมในสังคม และอาจจะส่งผลกระทบต่อการดำเนินนโยบาย “คืนคนดีสู่สังคม” ความตระหนักรู้ถึงผลกระทบของรูปภาษาเหล่านี้อาจนำไปสู่ การปรับปรุงวิธีการเลือกใช้ภาษาในการนำเสนอประเด็นการสนับสนุนบุคคลพ้นโทษ การสื่อสารอย่างรอบคอบและระมัดระวังน่าจะช่วยลดอคติที่มีต่อบุคคลพ้นโทษและสร้างการยอมรับบุคคลพ้นโทษได้มากขึ้น

Twin Text In The Secondary Social Studies And English Classroom, Sarah Booth Quong

Electronic Theses and Dissertations

This mixed-method study explores the implementation of Twin Text and its effectiveness in the U.S. History and English classrooms with regard to: mastery of the objectives laid out within the course curriculum, perpetuation of deeper learning, and fostering empathy and civic engagement through the use of Twin Text involving tenth and eleventh grade students and United States History and English teachers. The study answers the following questions: (1) What are the experiences of students in a Twin Text setting classroom environment? Three sub questions emerged: (A) In what ways does cross-curriculum teaching with an English Language Arts instructor affect student …

Dialogic Feedback And Its Effects On English Language Learners’ Writing Development: A Case Study, Shokhsanam Djalilova

Electronic Theses and Dissertations

This exploratory case study aimed to investigate the meanings that second language (L2) learners derive from their writing purposes revising processes and their engagement with dialogic feedback. The goal was to grasp the meaning that revision experiences had for L2 learners (n=17) and to understand the context within which they were operating and its influence on their revision behavior. In order to gain a better understanding of L2 learner engagement and investment in the revision processes which were bound to time and context the case study was built upon an ecological-semiotic approach to learning. The case study aimed to construct …

Social Identity, Economic Interest, And The Formation Of Host Attitudes Toward Refugees, Jeremy Cox

Electronic Theses and Dissertations

Scholarly studies of refugee crises have historically focused on the causes of refugee flight, the experience of the refugees themselves, or the impacts of refugees on host countries. More recently, a growing body of literature has examined the interaction of refugees and host populations, and more specifically the orientations of host individuals toward refugees. This study focuses on attitude formation during refugee crises, seeking to better understand the role of social and economic factors in shaping the attitudes of host populations. The core questions for this study are whether and how social identity and economic considerations relate to attitudes. Original …

Archaeological Investigations At The Old Manse, 2018-2019, Concord, Massachusetts, Christa M. Beranek, Megan Sheehan, Nicholas Zeitlin

Andrew Fiske Memorial Center for Archaeological Research Publications

In 2018-2019, the Fiske Center for Archaeological Research at UMass Boston excavated 38 shovel test pits and three excavation units at The Old Manse in Concord, Massachusetts, in advance of planned landscaping work, parking lot expansion, and the installation of a buried propane tank. The Old Manse (CON.347; CON.9037; CON.HA.20; 19-MD-89) is a late 18thcentury house at 269 Monument Street in Concord, Massachusetts, located on a 7-acre property abutting the Concord River and Minute Man National Historical Park. The property is owned by The Trustees of Reservations. The standing historic house dates to 1770 and is significant because of its …

Investigating Nonstandard Southern American English In Written Sources: A Historical Sociolinguistic Approach To The Tennessee Civil War Veterans Questionnaires, Juliana Norton

Electronic Theses and Dissertations

The purpose of this study was to examine and describe vernacular speech in East Tennessee during the nineteenth-century. This study combines strategies and methodologies from both historical and sociolinguistics to examine dialect in written sources. Specifically, this study utilizes phonological and grammatical data from the Tennessee Civil War Veterans Questionnaires supplemented with data from other written sources to describe East Tennessee vernacular speech. Using both quantitative and qualitative methods, the geographic and social distributions of nonstandard past tense verbs to be and do are analyzed. The findings from this study suggest that nineteenth-century East Tennessee vernacular speech of white men …

Summer Research Fellowship Project Descriptions 2019, Clark Science Center's Summer Research Fellows Program

SURF Abstracts (Women in Science)

A summary of research done by Smith College’s 2019 Summer Research Fellowship (SURF) Program participants. Ever since its 1967 start, SURF has been a cornerstone of Smith’s science education. Supervised by faculty mentor-advisors drawn from the Clark Science Center and connected to its eighteen science, mathematics, and engineering departments and programs and associated centers and units. At summer’s end, SURF participants were asked to summarize their research experiences for this publication.

Storytelling Study, Samantha Irene Pepe

Honors Theses and Capstones

Expressive prosody (i.e., a manner of communication that is characterized by lively rhythm and tempo) and inexpressive prosody (i.e., monotone speech) present different environments for listening to a story during a read-aloud session. This study aims to assess whether there are visual attention differences for preschoolers in these varied prosodic environments and how this affects comprehension.