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Do Contributing Files Provide Information About Oss Newcomers' Onboarding Barriers?, Felipe Fronchetti, David C. Shepherd, Igor Wiese, Christoph Treude, Marco Aurélio Gerosa, Igor Steinmacher Nov 2023

Do Contributing Files Provide Information About Oss Newcomers' Onboarding Barriers?, Felipe Fronchetti, David C. Shepherd, Igor Wiese, Christoph Treude, Marco Aurélio Gerosa, Igor Steinmacher

Faculty Publications

Effectively onboarding newcomers is essential for the success of open source projects. These projects often provide onboarding guidelines in their 'CONTRIBUTING' files (e.g., CONTRIBUTING.md on GitHub). These files explain, for example, how to find open tasks, implement solutions, and submit code for review. However, these files often do not follow a standard structure, can be too large, and miss barriers commonly found by newcomers. In this paper, we propose an automated approach to parse these CONTRIBUTING files and assess how they address onboarding barriers. We manually classified a sample of files according to a model of onboarding barriers from the …

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Application Of Virtual-Real Simulation In Military Field, Ziquan Mao, Jialong Gao, Jianxing Gong, Quan Liu Nov 2023

Application Of Virtual-Real Simulation In Military Field, Ziquan Mao, Jialong Gao, Jianxing Gong, Quan Liu

Journal of System Simulation

Abstract: The definition and content of the virtual-real simulation are presented. According to different technical ideas, the development status and existing problems of virtual-real simulation are summarized from three aspects of digital twin, live-virtual-constructive (LVC) simulation, and parallel system. The similarities and differences, as well as the advantages and disadvantages of the three methods are analyzed and compared, and their main application fields are discussed. In order to deal with difficulties encountered in military training, operational tests, equipment development, and equipment maintenance, a solution based on virtual-real simulation is proposed by means of theoretical guidance, case comparison, and transfer and …

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Charging Facility Layouts Based On Charging Selection Behavior, Lixiao Wang, Zhonghui Wang Nov 2023

Charging Facility Layouts Based On Charging Selection Behavior, Lixiao Wang, Zhonghui Wang

Journal of System Simulation

Abstract: A charging facility layout method based on charging selection behavior is proposed for the current uncoordinated development of electric vehicles and charging infrastructure and the low utilization of public charging facilities. The influence of the charging selection behavior of electric vehicle users' trips on the charging facility layout is considered, and a charging selection behavior model is built and applied to the charging demand prediction. Based on the study of charging selection behavior and charging demands, a charging facility layout model with the minimization of total travel time as the objective function is built, and the reciprocal feedback between …

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Research On Multi-Process Product Quality Prediction Based On Improved Bilstm, Tianrui Zhang, Yuting Liu, Yike Wang Nov 2023

Research On Multi-Process Product Quality Prediction Based On Improved Bilstm, Tianrui Zhang, Yuting Liu, Yike Wang

Journal of System Simulation

Abstract: In response to the complex manufacturing process of multi-process products, a multi-process product quality prediction model based on the kernel principal component analysis (KPCA) - and improved sparrow search algorithm (ISSA) optimized bi-directional long short term memory (BiLSTM) was proposed to address the uncertain factors that affect product quality, while improving the capacity for each process and ensuring the stability, in multi-process production. Firstly, KPCA was used for data preprocessing, and a kernel function was established on the basis of principal component analysis together with kernel methods. As redundant features were removed through dimension reduction, an improved Gaussian mutation …

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Image Semantic Segmentation Algorithm Based On Improved Deeplabv3+, Weiping Zhao, Yu Chen, Song Xiang, Yuanqiang Liu, Chaoyue Wang Nov 2023

Image Semantic Segmentation Algorithm Based On Improved Deeplabv3+, Weiping Zhao, Yu Chen, Song Xiang, Yuanqiang Liu, Chaoyue Wang

Journal of System Simulation

Abstract: Mainstream image semantic segmentation networks currently face problems such as incorrec segmentation, discontinuous segmentation, and high model complexity, which cannot be flexibly and efficiently deployed in practical scenarios. To this end, an image semantic segmentation network that optimizes the DeepLabv3+ model is designed by comprehensively considering the network parameters, prediction time, and accuracy. The lightweight EfficientNetv2 is adopted to extract backbone network features and improve parameter utilization. In the atrous spatial pyramid pooling module, the mixed strip pooling is utilized to replace the global average pooling, and a depthwise separable dilated convolution is introduced to reduce parameters and improve …

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Intercell Dynamic Scheduling Method Based On Deep Reinforcement Learning, Jing Ni, Mengke Ma Nov 2023

Intercell Dynamic Scheduling Method Based On Deep Reinforcement Learning, Jing Ni, Mengke Ma

Journal of System Simulation

Abstract: In order to solve the intercell scheduling problem of dynamic arrival of machining tasks and realize adaptive scheduling in the complex and changeable environment of the intelligent factory, a scheduling method based on a deep Q network is proposed. A complex network with cells as nodes and workpiece intercell machining path as directed edges is constructed, and the degree value is introduced to define the state space with intercell scheduling characteristics. A compound scheduling rule composed of a workpiece layer, unit layer, and machine layer is designed, and hierarchical optimization makes the scheduling scheme more global. Since double deep …

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Uav-Enabled Task Offloading Strategy For Vehicular Edge Computing Networks, Feng Hu, Haiyang Gu, Jun Lin Nov 2023

Uav-Enabled Task Offloading Strategy For Vehicular Edge Computing Networks, Feng Hu, Haiyang Gu, Jun Lin

Journal of System Simulation

Abstract: As intelligent vehicles are equipped with more and more sensors, the explosive growth of sensor data is generated, which brings severe challenges to vehicular communication and computing. In addition, the modern road presents a three-dimensional structure, and the system architecture of traditional vehicular networks cannot guarantee full coverage and seamless computing. A task offloading strategy for UAV-assisted and 6G-enabled (Sixth Generation) vehicular edge computing networks is proposed. Furthermore, a flexible and intelligent vehicular edge computing mode is composed by vehicles and UAVs, which provide three-dimensional edge computing services for delay-sensitive and computation-intensive vehicular tasks, and ensure timely processing and …

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Research On Operational Effectiveness Evaluation Method Of Space-Based Information Support Equipment System, Xiaolan Yu, Wei Xiong, Chi Han, Zhenwei Wu Nov 2023

Research On Operational Effectiveness Evaluation Method Of Space-Based Information Support Equipment System, Xiaolan Yu, Wei Xiong, Chi Han, Zhenwei Wu

Journal of System Simulation

Abstract: The operational effectiveness evaluation of space-based information support equipment systems has become a research hotspot in the military field. How to effectively deal with the nonlinear and confrontational problems of the operational effectiveness of the space-based information support equipment system has become a crucial issue in the development of the space-based information support equipment system. In this paper, a method for evaluating the operational effectiveness of the space-based information support equipment system based on the system dynamics (SD) model is presented. The SD flow rate basic tree entry modeling method is used to establish the basic tree entry model …

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Requirements Of Parallel Combat System Based On Gqfd-Coupling Coordination Degree, Zhiming Dong, Bingshan Si, Liang Li Nov 2023

Requirements Of Parallel Combat System Based On Gqfd-Coupling Coordination Degree, Zhiming Dong, Bingshan Si, Liang Li

Journal of System Simulation

Abstract: In view of future intelligent unmanned combat characteristics, the concept of parallel combat is proposed and the model of parallel combat system is built based on OODA ring theory. Meanwhile, this paper builds a demand analysis model based on GQFD-coupling coordination degree to solve the low reliability, lack of objectivity, and single description perspective of the traditional quality function deployment (QFD) method and coupling coordination degree analysis during demand analysis. Additionally, the importance ranking of ability requirements in the parallel combat system is obtained by the house of quality of ability requirement analysis in the combat system based on …

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Multi-Depot Half-Open Vehicle Routing Problem With Simultaneous Delivery-Pickup And Time Windows, Yingyu Zhang, Liyun Wu, Shengtai Jia Nov 2023

Multi-Depot Half-Open Vehicle Routing Problem With Simultaneous Delivery-Pickup And Time Windows, Yingyu Zhang, Liyun Wu, Shengtai Jia

Journal of System Simulation

Abstract: To solve the multi-depot half-open vehicle routing problem with simultaneous delivery-pickup and time windows, this paper builds a mathematical model of a multi-depot half-open vehicle routing problem with simultaneous delivery-pickup and time windows by balancing the vehicle in and out of the distribution center and minimizing vehicle delivery distance as the goal. According to the characteristics of the problem, a brain storm algorithm based on chaotic mutation is designed to solve this problem,and the sequential crossover strategy is adopted to increase the population diversity. Meanwhile, the algorithm selects two chaotic maps for chaotic mutation operation, which employs the diversity, …

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Learning-Based Ant Colony Optimization Algorithm For Solving A Kind Of Complex 2-Echelon Vehicle Routing Problem, Xue Chen, Rong Hu, Hui Wang, Zuocheng Li, Bin Qian, Yixu Li Nov 2023

Learning-Based Ant Colony Optimization Algorithm For Solving A Kind Of Complex 2-Echelon Vehicle Routing Problem, Xue Chen, Rong Hu, Hui Wang, Zuocheng Li, Bin Qian, Yixu Li

Journal of System Simulation

Abstract: Aiming at green 2-echelon vehicle routing problem with simultaneous pick-up and delivery, a learning-based ant colony optimization algorithm combined with clustering decomposition is proposed. The objective function to be minimized is total transportation cost wherein carbon emission cost is specially considered. Associated with the mutual coupling features of the 2-echelon vehicle routing problem, we propose a distance-based clustering method to decompose the original problem into a set of sub-problems. Then, a learning-based ant colony optimization algorithm is presented to find the solutions of the sub-problems based on which the solution of the original problem can be obtained. In the …

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Machine Learning Algorithms For Predictive Maintenance In Hvac Systems, Vibhu Sharma, Vrushank Mistry Nov 2023

Machine Learning Algorithms For Predictive Maintenance In Hvac Systems, Vibhu Sharma, Vrushank Mistry

Mechanical and Aerospace Engineering Graduate Student Publications

This comprehensive research endeavors to explore the integration of machine learning algorithms as a transformative solution for predictive maintenance in Heating, Ventilation, and Air Conditioning (HVAC) systems. The escalating demand for efficiency and sustainability in building practices has necessitated innovative approaches, and this study focuses on the proactive utilization of machine learning in HVAC system management. The investigation delves into the latest advancements in machine learning, offering a nuanced examination of its applications within HVAC systems. By predicting maintenance needs, these algorithms play a pivotal role in ensuring system reliability, optimizing energy efficiency, and contributing to substantial cost savings. The …

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Battle Of Iwo Jima In 1945, Majid Hamed Brij Nov 2023

Battle Of Iwo Jima In 1945, Majid Hamed Brij

Uruk Journal of Human Sciences

The research deals with the Battle of Iwo Jima, which broke out on (February 19 - March 26) of the year 1945, when the American forces were able to control the island of Iwo Jima after a large and dangerous amphibious landing, as (America) divided the island into two halves southern and northern, and the attack in more than one axis, according to a tight military plan carried out by the US Supreme Military Authority, which eventually led to complete control of it by the Americans, after both sides suffered heavy human losses, especially the Japanese, and then took control …

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Interview With Kurt Heisig, Kurt Heisig, Latasha Neal Nov 2023

Interview With Kurt Heisig, Kurt Heisig, Latasha Neal

Heritage Musics Interviews

Kurt Heisig is a multi-instrumentalist, educator, and instrument craftsman whose musical background reflects generations of family musicianship and artisanry. In the interview, he traces his training through influential classical and jazz traditions, including saxophonists Sigurd Rascher and Marcel Mule, the French Flute School, and musicians associated with the Stan Kenton Band. He also reflects on teaching, conducting, and preserving musical knowledge through direct relationships between generations of performers and educators. His experience as owner of Kurt Heisig Music business in Monterey and Pacific Grove and his connections to the Bay Area music community illustrate the transmission of jazz, classical, and …

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Availability And Utilization Of Educational Technology In Primary Schools Of Ethiopia, Jerusalem Yibeltal Yizengaw, Asnake Tarekegn Nigussie Nov 2023

Availability And Utilization Of Educational Technology In Primary Schools Of Ethiopia, Jerusalem Yibeltal Yizengaw, Asnake Tarekegn Nigussie

Journal of Educational Technology Development and Exchange (JETDE)

The purpose of this study is to look into the availability and utilization of instructional technology in Ethiopian primary education, using some urban and regional schools as case representatives. 165 in-service teachers were recruited using available sampling method from Addis Ababa and Amhara regional state primary schools. A questionnaire and semi-structured interview items were created and administered to collect data. The study used a descriptive survey design with a mixed methods research approach. Major findings revealed that teachers in the case primary schools do not have accesses to properly utilize educational technologies in the teaching-learning processes. Multiple regression analysis results …

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Making Tradable White Certificates Trustworthy, Anonymous, And Efficient Using Blockchains, Nouman Ashraf, Sachin Sharma, Sheraz Aslam, Khursheed Aurangzeb Nov 2023

Making Tradable White Certificates Trustworthy, Anonymous, And Efficient Using Blockchains, Nouman Ashraf, Sachin Sharma, Sheraz Aslam, Khursheed Aurangzeb

Articles

Fossil fuel pollution has contributed to dramatic changes in the Earth’s climate, and this trend will continue as fossil fuels are burned at an ever-increasing rate. Many countries around the world are currently making efforts to reduce greenhouse gas emissions, and one of the methods is the Tradable White Certificate (TWC) mechanism. The mechanism allows organizations to reduce their energy consumption to generate energy savings certificates, and those that achieve greater energy savings can sell their certificates to those that fall short. However, there are some challenges to implementing this mechanism, such as the centralized and costly verification and control …

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Analysis Of Autonomous Aerial Refueling Capability Requirements And Key Evaluation Indicators, Quan Zou, Yixin Hua, Zhu Shao, Wenbi Zhao Nov 2023

Analysis Of Autonomous Aerial Refueling Capability Requirements And Key Evaluation Indicators, Quan Zou, Yixin Hua, Zhu Shao, Wenbi Zhao

Journal of System Simulation

Abstract: From the perspective of flight tests, how to evaluate the autonomous aerial refueling (AAR) capability and select key indicators for evaluation is a key problem to be solved for AAR trials. The standards requirements of aerial refueling and manned aircraft aerial refueling experience in China and abroad are analyzed. The total capability of AAR is studied, and key evaluation indicators in the AAR whole process including rendezvous, formation, docking, refueling, and disengagement are proposed. The evaluation method is demonstrated in both numerical simulation and hardware-in-loop test environments. Finally, the key indicators affecting the docking success of AAR are analyzed, …

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Imitative Generation Of Optimal Guidance Law Based On Reinforcement Learning, Zhengxuan Jia, Tingyu Lin, Yingying Xiao, Guoqiang Shi, Hao Wang, Bi Zeng, Yiming Ou, Pengpeng Zhao Nov 2023

Imitative Generation Of Optimal Guidance Law Based On Reinforcement Learning, Zhengxuan Jia, Tingyu Lin, Yingying Xiao, Guoqiang Shi, Hao Wang, Bi Zeng, Yiming Ou, Pengpeng Zhao

Journal of System Simulation

Abstract: Under the background of high-speed maneuvering target interception, an optimal guidance law generation method for head-on interception independent of target acceleration estimation is proposed based on deep reinforcement learning. In addition, its effectiveness is verified through simulation experiments. As the simulation results suggest, the proposed method successfully achieves head-on interception of high-speed maneuvering targets in 3D space and largely reduces the requirement for target estimation with strong uncertainty, and it is more applicable than the optimal control method.

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Novel Tri-Biopolymer Thin Film With Superior Antimicrobial Efficacy, Ashraf Al-Goraee, Ali Alshami, Abdulrahman Al-Shami, Jason Power, Jadyn Guidinger, Christopher Buelke, Musabbir Jahan Talukder, Xiaodong Hou Nov 2023

Novel Tri-Biopolymer Thin Film With Superior Antimicrobial Efficacy, Ashraf Al-Goraee, Ali Alshami, Abdulrahman Al-Shami, Jason Power, Jadyn Guidinger, Christopher Buelke, Musabbir Jahan Talukder, Xiaodong Hou

Chemical Engineering Faculty Publications

This work reports a novel synthesis, characterization, and performance of antimicrobial polymeric thin films utilizing unreported ternary blend of Chitosan, PLA, and PCL. For binary systems, the selection of matching polymers has improved the material’s structures and properties; however, the transition to using a ternary system is not well-established yet. The ability to homogeneously blend 3 biopolymers would expand the potential to prepare new materials with tailored properties. Herein, unary, binary, and ternary films were produced by physical blending using the casting and solvent evaporation method. The films were then characterized using different techniques for comparing the properties of 3 …

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Implementation Of Think Pair Share Strategy In Learning The Qiraah Muassa’Ah, Ilham Fatkhu Romadhon, Ilma Nailu Fitriani, Nushrotun Nida, Yunita Miftahul Jannah, Dzikrika Rahmatu Hayati Nov 2023

Implementation Of Think Pair Share Strategy In Learning The Qiraah Muassa’Ah, Ilham Fatkhu Romadhon, Ilma Nailu Fitriani, Nushrotun Nida, Yunita Miftahul Jannah, Dzikrika Rahmatu Hayati

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

This study examines the implementation of TPS-type cooperative learning integrated with PjBL in the Qira’ah Muassa’ah subject at the Arabic Language Department, Universitas Negeri Malang. Findings indicate that TPS and PjBL enhance active participation, social skills, critical reading abilities, multilingual communicative competence, and learning outcomes.

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D2s2: Drag ’N’ Drop Mobile App Screen Search, Soumik Mohian, Tony Tang, Tuan Trinh, Don Dang, Christoph Csallner Nov 2023

D2s2: Drag ’N’ Drop Mobile App Screen Search, Soumik Mohian, Tony Tang, Tuan Trinh, Don Dang, Christoph Csallner

Association of Computing Machinery Open Access Agreement Publications-Archive

The lack of diverse UI element representations in publicly available datasets hinders the scalability of sketch-based interactive mobile search. This paper introduces D2S2, a novel approach that addresses this limitation via drag-and-drop mobile screen search, accommodating visual and text-based queries. D2S2 searches 58k Rico screens for relevant UI examples based on UI element attributes, including type, position, shape, and text. In an evaluation with 10 novice software developers D2S2 successfully retrieves target screens within the top-20 search results in 15/19 attempts within a minute. The tool offers interactive and iterative search, updating its search results each time the user modifies …

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The Social Determinants Of Health And Genocide: Towards A Public Health Integrated Framework Of Genocide And Mass Violence, Sian Persad, Cheng Xu Nov 2023

The Social Determinants Of Health And Genocide: Towards A Public Health Integrated Framework Of Genocide And Mass Violence, Sian Persad, Cheng Xu

Genocide Studies and Prevention: An International Journal

This paper makes a normative argument about transformations of public health as a necessary condition required in any transitional justice process. We seek to bridge the gap between the fields of genocide and public health to understand the recursive relationship between genocide and the social determinants of health. We show that structures and institutions established during genocide create enduring impacts on the public health outcomes of victim and survivor groups even after the ousting of the original perpetrators. Our comparative analysis of the Rwandan Genocide and the colonial genocide of Indigenous communities in Canada surveys the available public health literature …

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An Insight Into The Incorporation Of Artificial Intelligence In Paediatrics Practice In Iraq, Mahmood D. Al-Mendalawi Nov 2023

An Insight Into The Incorporation Of Artificial Intelligence In Paediatrics Practice In Iraq, Mahmood D. Al-Mendalawi

Sultan Qaboos University Medical Journal

No abstract provided.

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Safety In Flight Training - An Analysis Of The Ntsb Data 2014-2018, Michael F. Walach Nov 2023

Safety In Flight Training - An Analysis Of The Ntsb Data 2014-2018, Michael F. Walach

Journal of Aviation/Aerospace Education & Research

There were 7,500 safety events in the NTSB data sets from 2013-2018. These events were analyzed using Chi-square, Cramer’s V, and the odds ratio. Major findings in the study determined that while pilots crash aircraft for the same reasons whether they are in a training environment or not, student pilots are typically less likely to be killed, or seriously injured. The aircraft that student pilots fly however, do not share the same relative safety in some event types. Students destroy and substantially damage more aircraft than their non-training counterparts in abnormal runway contact events. The top five causes of safety …

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The Effects Of Operationally Limited Environments On Primary Flight Training At The Collegiate Level, Kevin M. Bursaw, Mallory K. Casebolt Nov 2023

The Effects Of Operationally Limited Environments On Primary Flight Training At The Collegiate Level, Kevin M. Bursaw, Mallory K. Casebolt

Journal of Aviation/Aerospace Education & Research

This national research study examined the effects operationally limited environments have on primary flight training at the collegiate level. The study utilized the operationally limited environment of the COVID-19 pandemic to quantify the amount of training that was done pre, post, and during the pandemic to evaluate the effects operationally limited environments have on primary flight training at the collegiate level to help aid in planning for future possible disturbances and successful self mitigation measures. Data was collected from 10 FAA Part 141 collegiate flight schools that offered a four-year bachelors degree and operated their own fleet of aircraft were …

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Universal Design For Learning (Udl): A Contemporary Approach To Professional Flight Instruction, Denise K. Whitford, Bernard W. Wulle, Nicoletta Fala Nov 2023

Universal Design For Learning (Udl): A Contemporary Approach To Professional Flight Instruction, Denise K. Whitford, Bernard W. Wulle, Nicoletta Fala

Journal of Aviation/Aerospace Education & Research

In the United States, an increasing number of aspiring commercial airline pilots are teaching as Certificated Flight Instructors, presumably to reach the minimum required flight hours and move into airline flight operations. High-quality training is the foundation of a high-quality globalized aviation workforce, yet there has been a persistent lack of systemic in-depth guidance surrounding how instructors are taught how to teach aviation subject matter, justifying the need for incorporating the use of evidence-based and promising practices from education fields into flight instruction. In this conceptual article, we outline the integral components and the research basis of the universal design …

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Experience Levels Forcing A Change In Aviation Planning, Jason A. Powell, Elizabeth Crockett Nov 2023

Experience Levels Forcing A Change In Aviation Planning, Jason A. Powell, Elizabeth Crockett

Journal of Aviation/Aerospace Education & Research

This theoretical article evaluates the changing dynamics caused by high turnover in aviation and how the lower level of experience impacts aeronautical companies' organizational planning and partnerships. The aviation organization must adapt managerial practices and alter training capability and procedures to ensure appropriate skill levels. Without proper planning, the company will have an imbalance of skills and accept more risk to operations. The aviation organization may be unable to adapt current scheduling practices to properly prepare the aircrew for challenging situations or sufficiently train maintenance personnel. The result is a need to leverage strategic partnerships, alter management practices toward personnel …

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Systematic Review Of Safety Management Systems In The United States General Aviation, Kenneth J. Gilbert Nov 2023

Systematic Review Of Safety Management Systems In The United States General Aviation, Kenneth J. Gilbert

Journal of Aviation/Aerospace Education & Research

A safety management system may benefit General Aviation by increasing safety and reducing accident rates. This paper aims to systematically review the existing literature in targeted databases for gaps concerning general aviation safety management systems. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) methodology provided the overall structure. Science Direct®, Embry Riddle Aeronautical University's Scholarly Commons, and the Federal Aviation Administration’s (FAA) website were the three publicly available sources. Initial search criteria included PDF research articles (2006-2022), including the terms safety management system and general aviation. Additionally, keyword searches for the terms policy, promotion, risk management, …

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Catholic Chamber Music For Young Musicians, Addie Funderburg Nov 2023

Catholic Chamber Music For Young Musicians, Addie Funderburg

Electronic Theses and Dissertations Archive

This document provides arrangements of early music pieces for high school string players, including a string duo, trio, and two quartets. These works were created to fill the gap of missing early music pieces for young chamber players. The Appendix is a teaching guide which includes helpful materials which outline the difficulty level of the pieces, discuss a brief history of the composers, and provide a recording for each piece. The teaching guide also incorporates different instrumental options for the arrangements. For example, the instructor could have a string quartet play or could use a string orchestra depending on the …

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Volume 122, Number 2 - Thursday, November, 30th, 2023, Saint Mary's College Of California Nov 2023

Volume 122, Number 2 - Thursday, November, 30th, 2023, Saint Mary's College Of California

The Collegian

No abstract provided.

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