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Articles 24751 - 24780 of 63946
Full-Text Articles in Computer Sciences
Accessibility: The Whys And The Hows, Devorah Kletenik
Accessibility: The Whys And The Hows, Devorah Kletenik
Open Educational Resources
This presentation introduces Computer Science students to the notion of accessibility: developing software for people with disabilities. This lesson provides a discussion of why accessibility is important (including the legal, societal and ethical benefits) as well as an overview of different types of impairments (visual, auditory, motor, neurological/cognitive) and how developers can make their software accessible to users with those disabilities. This lesson includes videos and links to readings and tutorials for students.
Coding For The Public Good: Front-End Website Design And Development, Devorah Kletenik
Coding For The Public Good: Front-End Website Design And Development, Devorah Kletenik
Open Educational Resources
This activity helps student design and develop a front-end of a website, from wireframes through HTML/CSS/Javascript. It includes design questions for students, including the invocation of Ben Schneiderman's eight golden rules for interface design.
Note: this activity assumes prior knowledge of web development. Since this activity is designed for an HCI course, with a focus on interface design, students are not expected to create a back-end for it. This activity can obviously be modified for a full-stack experience.
Accessibility Evaluation, Devorah Kletenik
Accessibility Evaluation, Devorah Kletenik
Open Educational Resources
This activity guides students through the evaluation of a website that they have created to see if it is accessible for users with disabilities. Students will simulate a number of different disabilities (e.g. visual impairments, color blindness, auditory impairments, motor impairments) to see if their website is accessible; they will also use automated W3 and WAVE tools to evaluate their sites. Students will consider the needs of users with disabilities by creating a persona and scenario of a user with disabilities interacting with their site. Finally, students will write up recommendations to change their site and implement the changes.
Structural And Lexical Methods For Auditing Biomedical Terminologies, Rashmie Abeysinghe
Structural And Lexical Methods For Auditing Biomedical Terminologies, Rashmie Abeysinghe
Theses and Dissertations--Computer Science
Biomedical terminologies serve as knowledge sources for a wide variety of biomedical applications including information extraction and retrieval, data integration and management, and decision support. Quality issues of biomedical terminologies, if not addressed, could affect all downstream applications that use them as knowledge sources. Therefore, Terminology Quality Assurance (TQA) has become an integral part of the terminology management lifecycle. However, identification of potential quality issues is challenging due to the ever-growing size and complexity of biomedical terminologies. It is time-consuming and labor-intensive to manually audit them and hence, automated TQA methods are highly desirable. In this dissertation, systematic and scalable …
Estimating Free-Flow Speed With Lidar And Overhead Imagery, Armin Hadzic
Estimating Free-Flow Speed With Lidar And Overhead Imagery, Armin Hadzic
Theses and Dissertations--Computer Science
Understanding free-flow speed is fundamental to transportation engineering in order to improve traffic flow, control, and planning. The free-flow speed of a road segment is the average speed of automobiles unaffected by traffic congestion or delay. Collecting speed data across a state is both expensive and time consuming. Some approaches have been presented to estimate speed using geometric road features for certain types of roads in limited environments. However, estimating speed at state scale for varying landscapes, environments, and road qualities has been relegated to manual engineering and expensive sensor networks. This thesis proposes an automated approach for estimating free-flow …
Deep Neural Architectures For End-To-End Relation Extraction, Tung Tran
Deep Neural Architectures For End-To-End Relation Extraction, Tung Tran
Theses and Dissertations--Computer Science
The rapid pace of scientific and technological advancements has led to a meteoric growth in knowledge, as evidenced by a sharp increase in the number of scholarly publications in recent years. PubMed, for example, archives more than 30 million biomedical articles across various domains and covers a wide range of topics including medicine, pharmacy, biology, and healthcare. Social media and digital journalism have similarly experienced their own accelerated growth in the age of big data. Hence, there is a compelling need for ways to organize and distill the vast, fragmented body of information (often unstructured in the form of natural …
Temporal Data Extraction And Query System For Epilepsy Signal Analysis, Yan Huang
Temporal Data Extraction And Query System For Epilepsy Signal Analysis, Yan Huang
Theses and Dissertations--Computer Science
The 2016 Epilepsy Innovation Institute (Ei2) community survey reported that unpredictability is the most challenging aspect of seizure management. Effective and precise detection, prediction, and localization of epileptic seizures is a fundamental computational challenge. Utilizing epilepsy data from multiple epilepsy monitoring units can enhance the quantity and diversity of datasets, which can lead to more robust epilepsy data analysis tools. The contributions of this dissertation are two-fold. One is the implementation of a temporal query for epilepsy data; the other is the machine learning approach for seizure detection, seizure prediction, and seizure localization. The three key components of our temporal …
Image Instance Segmentation: Using The Cirsy System To Identify Small Objects In Low Resolution Images, Orghomisan William Omatsone
Image Instance Segmentation: Using The Cirsy System To Identify Small Objects In Low Resolution Images, Orghomisan William Omatsone
Dissertations
The CIRSY system (or Chick Instance Recognition System) is am image processing system developed as part of this research to detect images of chicks in highly-populated images that uses the leading algorithm in instance segmentation tasks, called the Mask R-CNN. It extends on the Faster R-CNN framework used in object detection tasks, and this extension adds a branch to predict the mask of an object along with the bounding box prediction. Mask R-CNN has proven to be effective ininstance segmentation and object de-tection tasks after outperforming all existing models on evaluation of the Microsoft Common Objects in Context (MS COCO) …
Machine Learning Assisted Gait Analysis For The Determination Of Handedness In Able-Bodied People, Hugh Gallagher
Machine Learning Assisted Gait Analysis For The Determination Of Handedness In Able-Bodied People, Hugh Gallagher
Dissertations
This study has investigated the potential application of machine learning for video analysis, with a view to creating a system which can determine a person’s hand laterality (handedness) from the way that they walk (their gait). To this end, the convolutional neural network model VGG16 underwent transfer learning in order to classify videos under two ‘activities’: “walking left-handed” and “walking right-handed”. This saw varying degrees of success across five transfer learning trained models: Everything – the entire dataset; FiftyFifty – the dataset with enough right-handed samples removed to produce a set with parity between activities; Female – only the female …
An Examination Of The Smote And Other Smote-Based Techniques That Use Synthetic Data To Oversample The Minority Class In The Context Of Credit-Card Fraud Classification, Eduardo Parkinson De Castro
An Examination Of The Smote And Other Smote-Based Techniques That Use Synthetic Data To Oversample The Minority Class In The Context Of Credit-Card Fraud Classification, Eduardo Parkinson De Castro
Dissertations
This research project seeks to investigate some of the different sampling techniques that generate and use synthetic data to oversample the minority class as a means of handling the imbalanced distribution between non-fraudulent (majority class) and fraudulent (minority class) classes in a credit-card fraud dataset. The purpose of the research project is to assess the effectiveness of these techniques in the context of fraud detection which is a highly imbalanced and cost-sensitive dataset. Machine learning tasks that require learning from datasets that are highly unbalanced have difficulty learning since many of the traditional learning algorithms are not designed to cope …
Transformer Neural Networks For Automated Story Generation, Kemal Araz
Transformer Neural Networks For Automated Story Generation, Kemal Araz
Dissertations
Towards the last two-decade Artificial Intelligence (AI) proved its use on tasks such as image recognition, natural language processing, automated driving. As discussed in the Moore’s law the computational power increased rapidly over the few decades (Moore, 1965) and made it possible to use the techniques which were computationally expensive. These techniques include Deep Learning (DL) changed the field of AI and outperformed other models in a lot of fields some of which mentioned above. However, in natural language generation especially for creative tasks that needs the artificial intelligent models to have not only a precise understanding of the given …
Identifying Online Sexual Predators Using Support Vector Machine, Yifan Li
Identifying Online Sexual Predators Using Support Vector Machine, Yifan Li
Dissertations
A two-stage classification model is built in the research for online sexual predator identification. The first stage identifies the suspicious conversations that have predator participants. The second stage identifies the predators in suspicious conversations. Support vector machines are used with word and character n-grams, combined with behavioural features of the authors to train the final classifier. The unbalanced dataset is downsampled to test the performance of re-balancing an unbalanced dataset. An age group classification model is also constructed to test the feasibility of extracting the age profile of the authors, which can be used as features for classifier training. The …
Classification Of Animal Sound Using Convolutional Neural Network, Neha Singh
Classification Of Animal Sound Using Convolutional Neural Network, Neha Singh
Dissertations
Recently, labeling of acoustic events has emerged as an active topic covering a wide range of applications. High-level semantic inference can be conducted based on main audioeffects to facilitate various content-based applications for analysis, efficient recovery and content management. This paper proposes a flexible Convolutional neural network-based framework for animal audio classification. The work takes inspiration from various deep neural network developed for multimedia classification recently. The model is driven by the ideology of identifying the animal sound in the audio file by forcing the network to pay attention to core audio effect present in the audio to generate Mel-spectrogram. …
A Blockchain Simulator For Evaluating Consensus Algorithms In Diverse Networking Environments, Peter Foytik, Sachin Shetty, Sarada Prasad Gochhayat, Eranga Herath, Deepak Tosh, Laurent Njilla
A Blockchain Simulator For Evaluating Consensus Algorithms In Diverse Networking Environments, Peter Foytik, Sachin Shetty, Sarada Prasad Gochhayat, Eranga Herath, Deepak Tosh, Laurent Njilla
VMASC Publications
The massive scale, heterogeneity and distributed nature of Internet-of-Things (IoT) presents challenges in realizing a practical and effective security solution. Blockchain empowered platforms and technologies have been proposed to address aspects of this challenge. In order to realize a practical Blockchain deployment for IoT, there is a need for a testing and evaluation platform to evaluate performance and security of Blockchain applications and systems. In this paper, we present a Blockchain simulator that evaluates the consensus algorithms in a realistic and configurable network environment. Though, there are several Blockchain evaluation platforms, they are either wedded to a specific consensus protocol …
Measuring Decentrality In Blockchain Based Systems, Sarada Prasad Gochhayat, Sachin Shetty, Ravi Mukkamala, Peter Foytik, Georges A. Kamhoua, Laurent Njilla
Measuring Decentrality In Blockchain Based Systems, Sarada Prasad Gochhayat, Sachin Shetty, Ravi Mukkamala, Peter Foytik, Georges A. Kamhoua, Laurent Njilla
VMASC Publications
Blockchain promises to provide a distributed and decentralized means of trust among untrusted users. However, in recent years, a shift from decentrality to centrality has been observed in the most accepted Blockchain system, i.e., Bitcoin. This shift has motivated researchers to identify the cause of decentrality, quantify decentrality and analyze the impact of decentrality. In this work, we take a holistic approach to identify and quantify decentrality in Blockchain based systems. First, we identify the emergence of centrality in three layers of Blockchain based systems, namely governance layer, network layer and storage layer. Then, we quantify decentrality in these layers …
Scalable And Secure Big Data Iot System Based On Multifactor Authentication And Lightweight Cryptography, Saleh Atiewi, Amer Al-Rahayfeh, Muder Almiani, Salman Yussof, Omar Alfandi, Ahed Abugabah, Yaser Jararweh
Scalable And Secure Big Data Iot System Based On Multifactor Authentication And Lightweight Cryptography, Saleh Atiewi, Amer Al-Rahayfeh, Muder Almiani, Salman Yussof, Omar Alfandi, Ahed Abugabah, Yaser Jararweh
All Works
© 2013 IEEE. Organizations share an evolving interest in adopting a cloud computing approach for Internet of Things (IoT) applications. Integrating IoT devices and cloud computing technology is considered as an effective approach to storing and managing the enormous amount of data generated by various devices. However, big data security of these organizations presents a challenge in the IoT-cloud architecture. To overcome security issues, we propose a cloud-enabled IoT environment supported by multifactor authentication and lightweight cryptography encryption schemes to protect big data system. The proposed hybrid cloud environment is aimed at protecting organizations' data in a highly secure manner. …
Decentralized Telemedicine Framework For A Smart Healthcare Ecosystem, Ahed Abugabah, Nishara Nizamuddin, Ahmad Ali Alzubi
Decentralized Telemedicine Framework For A Smart Healthcare Ecosystem, Ahed Abugabah, Nishara Nizamuddin, Ahmad Ali Alzubi
All Works
The healthcare sector is one of the most rapidly growing sectors globally. With the ever-growing technology, patient care, regulatory compliance, and digital transformation, there is an increased need for healthcare sectors to collaborate with all stakeholders – both within the healthcare ecosystem and in concurring industries. In recent times, telemedicine has proven to provide high quality, affordable, and predominantly adapted healthcare services. However, telemedicine suffers from several risks in implementation, such as data breach, restricted access across medical fraternity, incorrect diagnosis and prescription, fraud, and abuse. In this work, introduce blockchain-based framework that would unlock the future of the healthcare …
The Effects Of Mixed-Initiative Visualization Systems On Exploratory Data Analysis, Alvitta Ottley, Adam Kern
The Effects Of Mixed-Initiative Visualization Systems On Exploratory Data Analysis, Alvitta Ottley, Adam Kern
All Computer Science and Engineering Research
The primary purpose of information visualization is to act as a window between a user and the data. Historically, this has been accomplished via a single-agent framework: the only decision-maker in the relationship between visualization system and analyst is the analyst herself. Yet this framework arose not from first principles, but a necessity. Before this decade, computers were limited in their decision-making capabilities, especially in the face of large, complex datasets and visualization systems. This paper aims to present the design and evaluation of a mixed-initiative system that aids the user in handling large, complex datasets and dense visualization systems. …
Pretraining Deep Learning Models For Natural Language Understanding, Han Shao
Pretraining Deep Learning Models For Natural Language Understanding, Han Shao
Honors Papers
Since the first bidirectional deep learn- ing model for natural language understanding, BERT, emerged in 2018, researchers have started to study and use pretrained bidirectional autoencoding or autoregressive models to solve language problems. In this project, I conducted research to fully understand BERT and XLNet and applied their pretrained models to two language tasks: reading comprehension (RACE) and part-of-speech tagging (The Penn Treebank). After experimenting with those released models, I implemented my own version of ELECTRA, a pretrained text encoder as a discriminator instead of a generator to improve compute-efficiency, with BERT as its underlying architecture. To reduce the number …
Toward Efficient Automation Of Interpretable Machine Learning Boosting, Nathan Neuhaus
Toward Efficient Automation Of Interpretable Machine Learning Boosting, Nathan Neuhaus
All Master's Theses
Developing efficient automated methods for Interpretable Machine Learning (IML) is an important and long-term goal in the field of Artificial Intelligence. Currently the Machine Learning landscape is dominated by Neural Networks (NNs) and Support Vector Machines (SVMs), models which are often highly accurate. Despite high accuracy, such models are essentially “black boxes” and therefore are too risky for situations like healthcare where real lives are at stake. In such situations, so called “glass-box” models, such as Decision Trees (DTs), Bayesian Networks (BNs), and Logic Relational (LR) models are often preferred, however can succumb to accuracy limitations. Unfortunately, having to choose …
Optimizing Pollution Routing Problem, Shivika Dewan
Optimizing Pollution Routing Problem, Shivika Dewan
All Master's Theses
Pollution is a major environmental issue around the world. Despite the growing use and impact of commercial vehicles, recent research has been conducted with minimizing pollution as the primary objective to be reduced. The objective of this project is to implement different optimization algorithms to solve this problem. A basic model is created using the Vehicle Routing Problem (VRP) which is further extended to the Pollution Routing Problem (PRP). The basic model is updated using a Monte Carlo Algorithm (MCA). The data set contains 180 data files with a combination of 10, 15, 20, 25, 50, 75, 100, 150, and …
Image Features For Tuberculosis Classification In Digital Chest Radiographs, Brian Hooper
Image Features For Tuberculosis Classification In Digital Chest Radiographs, Brian Hooper
All Master's Theses
Tuberculosis (TB) is a respiratory disease which affects millions of people each year, accounting for the tenth leading cause of death worldwide, and is especially prevalent in underdeveloped regions where access to adequate medical care may be limited. Analysis of digital chest radiographs (CXRs) is a common and inexpensive method for the diagnosis of TB; however, a trained radiologist is required to interpret the results, and is subject to human error. Computer-Aided Detection (CAD) systems are a promising machine-learning based solution to automate the diagnosis of TB from CXR images. As the dimensionality of a high-resolution CXR image is very …
Memory And Resource Leak Defects And Their Repairs In Java Projects, Mohammadreza Ghanavati, Diego Costa, Janos Seboek, David Lo, Artur Andrzejak
Memory And Resource Leak Defects And Their Repairs In Java Projects, Mohammadreza Ghanavati, Diego Costa, Janos Seboek, David Lo, Artur Andrzejak
Research Collection School Of Computing and Information Systems
Despite huge software engineering efforts and programming language support, resource and memory leaks are still a troublesome issue, even in memory-managed languages such as Java. Understanding the properties of leak-inducing defects, how the leaks manifest, and how they are repaired is an essential prerequisite for designing better approaches for avoidance, diagnosis, and repair of leak-related bugs. We conduct a detailed empirical study on 452 issues from 10 large opensource Java projects. The study proposes taxonomies for the leak types, for the defects causing them, and for the repair actions. We investigate, under several aspects, the distributions within each taxonomy and …
Optimal Feature Selection For Learning-Based Algorithms For Sentiment Classification, Zhaoxia Wang, Zhiping Lin
Optimal Feature Selection For Learning-Based Algorithms For Sentiment Classification, Zhaoxia Wang, Zhiping Lin
Research Collection School Of Computing and Information Systems
Sentiment classification is an important branch of cognitive computation—thus the further studies of properties of sentiment analysis is important. Sentiment classification on text data has been an active topic for the last two decades and learning-based methods are very popular and widely used in various applications. For learning-based methods, a lot of enhanced technical strategies have been used to improve the performance of the methods. Feature selection is one of these strategies and it has been studied by many researchers. However, an existing unsolved difficult problem is the choice of a suitable number of features for obtaining the best sentiment …
Ethics, Privacy And Data Collection: A Complex Intersection, Matthew S. Brown
Ethics, Privacy And Data Collection: A Complex Intersection, Matthew S. Brown
Honors Theses
The technology around us enables incredible abilities such as high-resolution video calls and the ability to stay connected with everyone we care about through social media. This technology also comes with a hidden cost in the form of data collection.
This work explores what privacy means and how users understand what data social media companies collect and monetize. This thesis also proposes a more ethical business model that addresses privacy concerns from an individual perspective.
Calibration For A Hybrid Mimo Near-Field Imaging System To Mitigate Antennas Effects, Ha Hoang, Zeeshan Ahmed, Matthias John, Patrick Mcevoy, Max Ammann
Calibration For A Hybrid Mimo Near-Field Imaging System To Mitigate Antennas Effects, Ha Hoang, Zeeshan Ahmed, Matthias John, Patrick Mcevoy, Max Ammann
Conference Papers
A calibration method for a high-resolution hybrid MIMO turntable radar imaging system is presented. A line of small metal balls is used in the calibration process to measure the position shift caused by undesired effects of the antennas. The unwanted effects in the near-field antenna response are analysed and significantly mitigated based on the referential features of the MIMO configuration.
อัลกอริทึมการระบุการผันกลับของเซลลูลาร์ออโตมาตาหนึ่งมิติด้วยกราฟสับเซตย่อยภายใต้เงื่อนไขการกำหนดขอบเขตแบบไม่มีค่า, วรยุทธ วงศ์นิล
อัลกอริทึมการระบุการผันกลับของเซลลูลาร์ออโตมาตาหนึ่งมิติด้วยกราฟสับเซตย่อยภายใต้เงื่อนไขการกำหนดขอบเขตแบบไม่มีค่า, วรยุทธ วงศ์นิล
Chulalongkorn University Theses and Dissertations (Chula ETD)
เซลลูลาร์ออโตมาตาถือเป็นโมเดลทางคณิตศาสตร์ที่สามารถทำงานแบบระบบพลวัต ซึ่งประกอบไปด้วยสถานะจำกัดที่เรียงตัวกันอย่างเป็นระบบเรียกเซลล์ แต่ละเซลล์จะเปลี่ยนสถานะไปยังสถานะใหม่พร้อมกันด้วยการอาศัยกฎการส่งผ่านที่ขึ้นอยู่กับเซลล์รอบ ๆ ด้วยเวลาแบบเต็มหน่วย แม้ว่าเซลลูลาร์ออโตมาตามีโครงสร้างและนิยามในแบบพื้นฐาน แต่สามารถสร้างระบบที่พฤติกรรมมีความซับซ้อนได้ สมบัติในการผันกลับได้ของเซลลูลาร์ออโตมาตาถือเป็นสมบัติสำคัญที่ได้รับความสนใจในหลายงานวิจัยและสามารถนำไปประยุกต์ใช้ได้ในงานหลาย ๆ ด้านในทางวิทยาศาสตร์ แต่สำหรับเซลลูลาร์ออโตมาตาหนึ่งมิติภายใต้เงื่อนไขการกำหนดขอบเขตแบบไม่มีค่ายังถือมีข้อจำกัดของจำนวนกฎที่มีไม่มากที่มีสมบัติดังกล่าว ในงานวิจัยนี้ศึกษาและเสนออัลกอริทึมการระบุการผันกลับของเซลลูลาร์ออโตมาตาหนึ่งมิติด้วยกราฟสับเซตย่อยภายใต้เงื่อนไขการกำหนดขอบเขตแบบไม่มีค่านิยามเซลล์เพื่อนบ้านด้วยเวกเตอร์ ด้วยการแทนเซลลูลาร์ออโตมาตาด้วยกราฟสับเซตย่อยเราเสนอวิธีในการระบุสมบัติการผันกลับได้ในกราฟโดยการพิจารณาเส้นเชื่อมและจุดยอดที่เชื่อมถึงกัน นอกจากนี้งานวิจัยนี้ยังเสนอวิธีในการคำนวณสถานะก่อนหน้าสำหรับสถานะใด ๆ ของเซลลูลาร์ออโตมาตาหนึ่งมิติที่มีสมบัติผันกลับได้ภายใต้เงื่อนไขการกำหนดขอบเขตแบบไม่มีค่า ซึ่งวิธีที่ได้เสนออยู่บนพื้นฐานของการพิจารณาลักษณะของเซลล์เพื่อนบ้านด้วยการคำนวณทางเดินบนกราฟด้วยการดำเนินการของเมตริกซ์
การวิเคราะห์ข้อความภาษาธรรมชาติตามประมวลกฎหมายอาญา, วีรยุทธ ครั่งกลาง
การวิเคราะห์ข้อความภาษาธรรมชาติตามประมวลกฎหมายอาญา, วีรยุทธ ครั่งกลาง
Chulalongkorn University Theses and Dissertations (Chula ETD)
วิทยานิพนธ์นี้วิเคราะห์การบังคับใช้กฎหมายอาญาของประเทศไทย ในภาค1 บทบัญญัติทั่วไป และภาค2 เฉพาะความผิดเกี่ยวกับชีวิต มาตรา 288 และมาตรา 289 ในลักษณะ10 ความผิดเกี่ยวกับชีวิตและร่างกาย ตามประมวลกฎหมายอาญาของไทย ส่วนแรกของวิทยานิพนธ์นี้ใช้ความรู้ด้านกฎหมายอาญาและคำพิพากษาของศาลฎีกาในการสร้างกฎในการพิจารณาที่มนุษย์สามารถเข้าใจได้ และส่วนที่สองคือการฝึกฝนแบบจำลองด้วยชุดข้อมูลจากคำพิพากษาด้วยเทคนิคการเรียนรู้เชิงลึก โดยแก้ปัญหาความไม่สมดุลของกลุ่มข้อมูลฝึกสอนด้วยการสังเคราะห์ตัวอย่างข้อมูลในกลุ่มอื่น ๆ ให้มีจำนวนเท่ากับกลุ่มที่มากที่สุด และฝึกสอนด้วยโครงข่ายหน่วยความจำระยะสั้นแบบยาวทิศทางเดียวและสองทิศทาง ซึ่งเป็นโครงข่ายประสาทเทียมแบบวกกลับประเภทหนึ่ง และเมื่อวัดประสิทธิภาพแบบจำลองด้วยค่าเฉลี่ยมหภาคเอฟวัน พบว่าแบบจำลองของหน่วยความจำระยะสั้นแบบยาวสองทิศทางให้ประสิทธิภาพสูงกว่าแบบทิศทางเดียว และการใช้ค่าถ่วงน้ำหนักเริ่มต้นจากเรียนรู้ด้วยคลังข้อมูลขนาดใหญ่อื่น ให้ประสิทธิภาพที่สูงกว่าการใช้เฉพาะข้อมูลฝึกสอน และท้ายสุดทำการทดสอบความแม่นยำของแบบจำลองจากข่าวอาชญากรรมด้วยเทคนิคการหาค่าเฉลี่ยความน่าจะเป็น เพื่อใช้เป็นข้อมูลขาเข้าของกฎการพิจารณา พบว่าสอดคล้องกับความเห็นของนักกฎหมาย 59 %
Confusion Detection From Facial Expression Using Deep Neural Network, Nun Vanichkul
Confusion Detection From Facial Expression Using Deep Neural Network, Nun Vanichkul
Chulalongkorn University Theses and Dissertations (Chula ETD)
Confusion is the most frequently observed emotion in daily life and can greatly affect the effectiveness and efficiency of communication. Detecting the confusion from learners and resolving timely is critical for achieving successful teaching in education. Most Facial Expression Recognition (FER) research works focus only on detecting six basic emotions: happiness, sadness, anger, fear, disgust, and surprise. Even though the confusion detection problem gains more attention from researchers recently, analysis of both spatial and temporal information with sufficient data is still short. In this study, we present a spatial-temporal network for confusion detection on video level which was trained on …
คลังข้อมูลและระบบสนับสนุนการตัดสินใจสำหรับอุบัติเหตุทางถนน, ปวินณา ทบพักตร์
คลังข้อมูลและระบบสนับสนุนการตัดสินใจสำหรับอุบัติเหตุทางถนน, ปวินณา ทบพักตร์
Chulalongkorn University Theses and Dissertations (Chula ETD)
อุบัติเหตุทางถนนนับเป็นปัญหาสำคัญระดับโลก รายงานสถานการณ์โลกด้านความปลอดภัยทางถนน ปี พ.ศ. 2561 (Global Report on Road Safety 2018) โดยองค์การอนามัยโลก (World Health Organization : WHO) พบว่า การบาดเจ็บและสูญเสียชีวิตจากอุบัติเหตุทางถนนมีแนวโน้มเพิ่มขึ้นจากฐานข้อมูลของปี 2556 ที่พบว่า อัตราผู้เสียชีวิตบนท้องถนนสูงถึง 1.25 ล้านคนต่อปี และการบาดเจ็บและสูญเสียชีวิตจากอุบัติเหตุทางถนนของประเทศไทยติดอันดับสองของโลก โดยมีจำนวนผู้เสียชีวิตอยู่ที่ 36.2 คนต่อประชากรหนึ่งแสนคน หรือเฉลี่ยปีละ 24,326 คน นอกจากนี้ ยังพบว่า อัตราผู้เสียชีวิตบนท้องถนนเพิ่มขึ้นเป็น 1.35 ล้านคนต่อปี โดยประเทศไทยติดอันดับเก้าของโลก และมีประมาณการจำนวนผู้เสียชีวิตอยู่ที่ 32.7 คนต่อประชากรหนึ่งแสนคน (60 คนต่อวัน) คิดเป็นจำนวนเฉลี่ยปีละ 22,491 คน แม้ว่าการบาดเจ็บและสูญเสียชีวิตจากอุบัติเหตุทางถนนของประเทศไทยมีแนวโน้มดีขึ้นเล็กน้อยในภาพรวม จากสถิติผู้เสียชีวิตของไทยที่ลดลง จากเดิม 2,000 คน แต่ประเทศไทยยังคงเป็นประเทศที่มีจำนวนผู้เสียชีวิตสูงที่สุดอันดับหนึ่งในเอเชียและในอาเซียน ดังนั้น หน่วยงานที่เกี่ยวข้องในประเทศไทยจึงจำเป็นต้องติดตามสถานการณ์ของอุบัติเหตุทางถนนทั่วประเทศ เพื่อที่จะสามารถวางแผนและกำหนดนโยบายหรือมาตรการต่างๆ ที่จะช่วยป้องกันและลดอุบัติเหตุทางถนนได้ โครงการ “คลังข้อมูลและระบบสนับสนุนการตัดสินใจสำหรับอุบัติเหตุทางถนน” นี้ ประกอบด้วย 5 ระบบ ได้แก่ ระบบวิเคราะห์ภาพรวมของการเกิดอุบัติเหตุ ระบบวิเคราะห์สาเหตุการเกิดอุบัติเหตุ ระบบวิเคราะห์ความปลอดภัยในชีวิตและทรัพย์สิน ระบบวิเคราะห์การเกิดอุบัติเหตุช่วงเจ็ดวันอันตราย และระบบวิเคราะห์แนวโน้มการเกิดอุบัติเหตุทางถนน ระบบได้พัฒนาขึ้นโดยมี Microsoft SQL Server 2019 เป็นระบบจัดการฐานข้อมูล และใช้โปรแกรม Tableau เวอร์ชั่น 2021.1 เป็นเครื่องมือในการพัฒนาธุรกิจอัจฉริยะ ระบบที่พัฒนาขึ้นนี้จะช่วยให้ผู้ที่มีส่วนรับผิดชอบให้สามารถวิเคราะห์ข้อมูลอุบัติเหตุทางถนนในมิติต่างๆ ได้อย่างถูกต้องและรวดเร็ว นอกจากนี้ยังสามารถเจาะลึกลงไปดูในรายละเอียดที่ต้องการเพื่อใช้ประกอบการตัดสินใจเกี่ยวกับการกำหนดแนวทางนโยบาย แผนแม่บทความปลอดภัยทางถนน ยุทธศาสตร์ทั้งในระยะสั้นและระยะยาว และแผนเกี่ยวกับการป้องกันและลดอุบัติเหตุทางถนนที่มีประสิทธิภาพมากยิ่งขึ้นต่อไป