2022 Intermountain Engineering, Technology and Computing (IETC)最新文献

Temporal Abstract Syntax Trees for Understanding Student Coding Thought Process 理解学生编码思维过程的时间抽象语法树

2022 Intermountain Engineering, Technology and Computing (IETC) Pub Date : 2022-05-01 DOI: 10.1109/ietc54973.2022.9796943

Delaney Moore, John Edwards, Hamid Karimi, Rajiv Khadka, P. Bodily

{"title":"Temporal Abstract Syntax Trees for Understanding Student Coding Thought Process","authors":"Delaney Moore, John Edwards, Hamid Karimi, Rajiv Khadka, P. Bodily","doi":"10.1109/ietc54973.2022.9796943","DOIUrl":"https://doi.org/10.1109/ietc54973.2022.9796943","url":null,"abstract":"In computer science (CS) academia it can be a challenge to help beginning students develop the thought process to be a successful software engineer. Although code is implemented in a linear manner, the mental construction and problem solving process is commonly nonlinear, requiring a high-level vision of class structures, control flow, etc., before any code is physically written. This concept can be difficult for beginning CS students to comprehend and use in their own coding projects. We provide a visualization that aims to help students more easily understand the coding thought process. This is accomplished by collecting keystroke data and incorporating it into an abstract syntax tree (AST), which creates a temporal AST. We provide the necessary information to prove that this visualization exists for any student’s project where keystroke data is collected. We also refer to another type of keystroke visualization known as a Code Process Chart (CPC) that provided inspiration for the temporal AST. The goal is to eventually use these temporal ASTs alongside their corresponding CPCs to help students understand and improve their own coding thought process.","PeriodicalId":251518,"journal":{"name":"2022 Intermountain Engineering, Technology and Computing (IETC)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124416105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Syntax Exercises and Their Effect on Computational Thinking 语法练习及其对计算思维的影响

2022 Intermountain Engineering, Technology and Computing (IETC) Pub Date : 2022-05-01 DOI: 10.1109/ietc54973.2022.9796660

Marina Johnson, H. Swanson, John Edwards

引用次数: 0

Object Detection and Navigation Strategy for Obstacle Avoidance Applied to Autonomous Wheel Chair Driving 自动驾驶轮椅避障目标检测与导航策略

2022 Intermountain Engineering, Technology and Computing (IETC) Pub Date : 2022-05-01 DOI: 10.1109/ietc54973.2022.9796979

Nusrat Farheen, G. G. Jaman, M. Schoen

引用次数: 3

Accelerated Protection Methodology for Broken Conductor Protection - An Implementation Case 断线保护的加速保护方法。实施案例

2022 Intermountain Engineering, Technology and Computing (IETC) Pub Date : 2022-05-01 DOI: 10.1109/ietc54973.2022.9796756

D. V. João, Hamilton G. B. Souza, M. A. Martins, K. Martins

引用次数: 0

Nonlinear, Low-Energy-Actuator-Prioritizing Control Allocation for Winged eVTOL UAVs 有翼eVTOL无人机非线性、低能量驱动优先控制分配

2022 Intermountain Engineering, Technology and Computing (IETC) Pub Date : 2022-05-01 DOI: 10.1109/ietc54973.2022.9796842

Mason B. Peterson, R. Beard, Jacob B. Willis

{"title":"Nonlinear, Low-Energy-Actuator-Prioritizing Control Allocation for Winged eVTOL UAVs","authors":"Mason B. Peterson, R. Beard, Jacob B. Willis","doi":"10.1109/ietc54973.2022.9796842","DOIUrl":"https://doi.org/10.1109/ietc54973.2022.9796842","url":null,"abstract":"Winged eVTOL aircraft’s ability to generate aerodynamic lift with wings and to create upward thrust with upward-facing rotors makes these vehicles capable of the kind of versatile flight needed in urban environments. Because of these vehicles’ aerodynamic complexities and their unique methods of producing thrusts and torques, control allocation is needed to determine how to distribute force and torque efforts across the aircraft’s actuators. However, current control allocation methods fail to properly represent the actuators’ complex dynamics and are unable to harness the full potential of these over-actuated vehicles. Current shortcomings include modeling rotors as linear effectors while the wide range of airspeeds experienced by eVTOL aircraft leads to significant nonlinearities in the thrust and torque achieved by each rotor. This means linear control allocation methods may consistently fail to produce desired thrusts and torques, which can inhibit the vehicle from tracking a trajectory at best, and at worst can cause the vehicle to stall and lose control. Additionally, current control allocation methods are often unable to prioritize low-energy actuators resulting in shorter battery life. We present a nonlinear control allocation method that considers a nonlinear rotor model, allows for prioritization of low-energy control surfaces over rotors, and reliably accounts for actuator saturation. Simulation results show a 90% reduction in high-airspeed trajectory tracking position error from a typical, linear least-squares pseudoinverse control allocation method while maintaining comparable energy use.","PeriodicalId":251518,"journal":{"name":"2022 Intermountain Engineering, Technology and Computing (IETC)","volume":"52 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116579614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Through Movement Flow Rate on Left-Turn Lane Utilization at Signalized Intersections 通行车流率对信号交叉口左转车道利用的影响

2022 Intermountain Engineering, Technology and Computing (IETC) Pub Date : 2022-05-01 DOI: 10.1109/ietc54973.2022.9796774

M. Ghanim, Khaled Shaaban

{"title":"Effect of Through Movement Flow Rate on Left-Turn Lane Utilization at Signalized Intersections","authors":"M. Ghanim, Khaled Shaaban","doi":"10.1109/ietc54973.2022.9796774","DOIUrl":"https://doi.org/10.1109/ietc54973.2022.9796774","url":null,"abstract":"Heavy left-turn volumes can increase the delay at any signalized intersection. This study aims to investigate the interaction between through movement and left-turning movement at signalized intersections. A microsimulation approach is employed to simulate real traffic conditions at a signalized intersection in the city of Doha, Qatar. Different scenarios with different traffic needs, left-turn bay designs, and traffic control parameters were used. For each scenario, the left-turn throughput, average delay, and average queue are recorded. The results indicated that the approach volume is influencing the level of utilization of left-turn lanes, regardless of the number of lanes or the storage length. The results also reveal that high delay at left-turn lanes is experienced as the through movements reach capacity. In regards to left-turn queues, while increasing the number of left-turn lanes has reduced the queue length, the associated high delays indicate that the storage bay is not fully utilized, and many of the left-turn vehicles are not allowed to enter the left-turn bay due to the through movement demand. The results indicate that through movement flow rate should be considered when deciding the number and length of left-turn lanes needed instead of focusing only on the left turn demand. The results also suggest that the use of microsimulation can provide more accurate results when determining the length and number of left-turn lanes.","PeriodicalId":251518,"journal":{"name":"2022 Intermountain Engineering, Technology and Computing (IETC)","volume":"2012 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129031273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design Challenges for Hyperloop Transport Systems 超级高铁运输系统的设计挑战

2022 Intermountain Engineering, Technology and Computing (IETC) Pub Date : 2022-05-01 DOI: 10.1109/ietc54973.2022.9796713

K. Shaaban, E. Radwan

引用次数: 1

Automated Unit Testing and Test-Driven Development Approach to Teaching C++ 基于自动化单元测试和测试驱动开发的c++教学方法

2022 Intermountain Engineering, Technology and Computing (IETC) Pub Date : 2022-05-01 DOI: 10.1109/ietc54973.2022.9796750

Waseem Sheikh

{"title":"Automated Unit Testing and Test-Driven Development Approach to Teaching C++","authors":"Waseem Sheikh","doi":"10.1109/ietc54973.2022.9796750","DOIUrl":"https://doi.org/10.1109/ietc54973.2022.9796750","url":null,"abstract":"The best practices of agile software development have had a significant positive impact on the quality of software and time-to-delivery. As a result, many leading software companies employ some form of agile software development practices. Some of the most important best practices of agile software development, which have received significant attention in recent years, are automated unit testing (AUT) and test-driven development (TDD). Both of these practices work in conjunction to provide numerous benefits. Unfortunately, students in introductory programming courses are generally not introduced to AUT and TDD. This leads to the development of bad programming habits and practices which become harder to change later on. By introducing the students earlier to these industry-standard best practices, not only the motivation and interest of students in this area can be increased but also their academic success and job marketability can be enhanced. This paper presents the detailed design of an introductory C++ programming course designed using the principles of AUT and TDD. The paper presents the pedagogical techniques employed to inculcate industry-proven agile software development best practices in the students.","PeriodicalId":251518,"journal":{"name":"2022 Intermountain Engineering, Technology and Computing (IETC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133895163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Feature Analysis in Satellite Image Classification Using LC-KSVD and Frozen Dictionary Learning 基于LC-KSVD和冰冻字典学习的卫星图像分类特征分析

2022 Intermountain Engineering, Technology and Computing (IETC) Pub Date : 2022-05-01 DOI: 10.1109/ietc54973.2022.9796892

Kaveen Liyanage, Bradley M. Whitaker

{"title":"Feature Analysis in Satellite Image Classification Using LC-KSVD and Frozen Dictionary Learning","authors":"Kaveen Liyanage, Bradley M. Whitaker","doi":"10.1109/ietc54973.2022.9796892","DOIUrl":"https://doi.org/10.1109/ietc54973.2022.9796892","url":null,"abstract":"Feature ranking is an interesting problem in data science due to the time and effort wasted on collecting, storing, and processing redundant features. This may also lead to over-fitted and under-trained machine learning (ML) and deep learning models. Although there are several feature ranking algorithms available, they lack an intuitive interpretation of the effect on the final ML model behavior. In this paper, we propose simple and intuitive feature ranking metrics based on sparse representation methods to be used in classification tasks. Sparse representation is an emerging image processing tool that can be effectively used in satellite/airborne image scene classification tasks. This paper applies two sparse representation methods, LCKSVD and Frozen Dictionary Learning, on handcrafted features taken from the Sat-4 and Sat-6 datasets as a preliminary test. Even though these methods report lower classification accuracies than state-of-art deep learning methods, they provide an intuitive understanding of the system model. Furthermore, sparse representation allows for the use of simpler linear classifiers in the classification stage to achieve relatively high performance. Finally, we present an analysis of the relationship between the learned sparse coefficients and the original feature space to explain the intuitive behavior of this model.","PeriodicalId":251518,"journal":{"name":"2022 Intermountain Engineering, Technology and Computing (IETC)","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114995273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The COVID-19 Pandemic and Public Transportation Usage in Utah COVID-19大流行与犹他州公共交通使用

2022 Intermountain Engineering, Technology and Computing (IETC) Pub Date : 2022-05-01 DOI: 10.1109/ietc54973.2022.9796855

Khaled Shaaban, Luke Maeser

引用次数: 2