Digital Commons Network^™

Trajectory Planning Of 6-Dof Manipulator Based On Inverse Multi-Objective Optimization, Xianyin Duan, Can Zhang, Zerun Zhu, Zhaoyang Sun, Guozhang Jiang, Xiang Feng

Journal of System Simulation

Abstract: In order to optimize the machining quality and production efficiency of manipulator, an inverse multi-objective determination method based on the optimization of manipulator stiffness and global travel is proposed. Establishing the forward kinematics model of manipulator, the inverse kinematics is solved by using behaviour tree. The stiffness performance evaluation index and the mathematical model of total stroke of joint angle are constructed to carry out the inverse solution multi-objective optimization. The 7-5-7 order polynomial joint space interpolation algorithm is designed for the trajectory planning. Compared with the commonly used cubic polynomial programming method, the manipulator trajectory obtained by …

Chaotic Gravitational Search Iterative Identification For Wiener Systems, Shanling Xu, Junhong Li, Mengru Liu, Hua Liang

Journal of System Simulation

Abstract: The Wiener nonlinear system is composed of a dynamic linear subsystem and a series of nonlinear static subsystems, which is widely used in the fields of automatic control, chemical engineering, electrical and other fields. Considering the identification of the Wiener Output Error Autoregressive (Wiener OEAR) system, a chaotic gravitational search iterative identification algorithm is proposed, in which the chaotic optimization mechanism is introduced into the gravitational search algorithm to estimate the unknown parameters of the Wiener OEAR system and the convergence is proved. In order to show the effectiveness of the proposed identification algorithm, the gravitational search algorithm and …

Multi-Uav Trajectory Planning Simulation Based On Adaptive Extended Potential Field, Wang Ning, Jiyang Dai, Ying Jin, Yeding Li, Liangliang Lu

Journal of System Simulation

Abstract: To address the defects of the traditional artificial potential field method, such as unreachable targets, easy to fall into local minimums, inability to avoid obstacles, and lack of trajectory optimization strategies, and to solve the problem of slow planning rate due to more layers in the layered potential field algorithm, the model of the UAV is established, in which the influence factor of the attractive and repulsive force is introduced into the layered potential field function to solve the problem of unreachable targets, and the " auxiliary force" is introduced to solve the problem of easily falling into local …

Simulation On Aviation Maintenance Support System Based On Goal-Driven, Jiping Cong, Lijie Cui, Ding Gang, Ren Bo

Journal of System Simulation

Abstract: Aiming at the large investment and long time for optimization in aviation maintenance support model practice, for the first time, based on Netlogo platform, the multi-agent aviation maintenance support simulation system is constructed, which provides a reference to adapt the current support tasks and improve the evaluation efficiency. Selecting the annual mission flight time, echelon status, aircraft intact rate, and mission completion rate as the goal drivers, the simulation on different aviation maintenance support process is carried out, which displays the changes in flight arrangements, aircraft status, personnel, support equipment, etc. The simulation experiment shows that the multi-agent …

Whole Ship Simulation Training Platform Based On Virtual Reality, Jiawen Sun, Hongxiang Ren, Fangbing Xiao, Xiaobin Jiang

Journal of System Simulation

Abstract: Under the current navigation education mode, it is common that trainees lack the overall navigation knowledge and the operation practice on onboard equipment and instruments. It is necessary to develop a whole ship simulation training platform that is not limited by time and sites. The six-degree freedom mathematical model of ship motion is established by using the separation modeling theory of ship maneuverability. The flexible object simulation technology, the modeling and rendering of ocean wave technology, and the reverse dynamics technology are adopted to realize the ship scene roaming and equipment interaction. The simulation results show that …

Classification Of Flight Delay Based On Nonlinear Weighted Xgboost, Tang Hong, Wang Dong, Song Bo, Wenkui Chu, Linyuan He

Journal of System Simulation

Abstract: Aiming at the classification of flight delay under imbalance data, a novel method based on nonlinear weighted XGBoost (extreme gradient boosting) is proposed. The imbalance of flight delay data and the influence for classification performance caused by the data imbalance are analyzed. A heuristic nonlinear weighting method based on sample proportion is proposed, and the negative log likelihood loss function is optimized. The real flight delay dataset is used to validate the performance of the classification algorithm. The experiment results show that the proposed nonlinear weighted XGBoost algorithm can improve the classification accuracy of flight delay, while ensuing a …

Information Technology News, Georgia Southern University

Information Technology: News & Publications (2012-2023)

• Women in Cyber Security

Vaccine Hesitancy In People Who Inject Drugs, David Migrandasa Arnopole

DNP and Student Works

The influenza virus requires vaccination for the world to have some control of the spread of the disease. People who inject drugs are just as likely to reject the influenza vaccine as the rest of the population but are at higher risk for complications from the virus (Lunan, 2020). The purpose of this study was to determine if an educational intervention would decrease vaccine hesitancy in PWID. The sample was from a population of people who inject drugs using a syringe exchange program located in Tennessee. The data were collected from December 2020 through February 2021 (n=310). The study method …

Effects Of A Videogame In Math Performance And Anxiety In Primary School Authors, Mariana Rocha, Pierpaolo Dondio

Conference papers

The present paper describes the design and evaluation of a videogame developed to support math education and overcome math anxiety (MA) at the primary school level. The game narrative is based on the history of math. The player travels back on time and meets on-player characters such as Pythagoras of Samos and Ada Lovelace, learning about how math was used during their times. The player is invited to play a minigame where the concepts shared by the characters are used as a strategy to win. The game’s evaluation consisted of a pre and post-testing study that measured students’ math performance …

Contextual Considerations: Revision Of The Wiliam And Thompson (2007) Formative Assessment Framework In The Jamaican Context, Clavia T. Williams-Mcbean

The Qualitative Report

The research context should be carefully considered in qualitative, quantitative, and mixed methods research as it influences the efficacy of the processes and outcomes. This paper describes how contextual factors in the teaching of English in Jamaican secondary schools led to changes in the Wiliam and Thompson (2007) formative assessment framework. Data collected through interviews and observations of 32 teachers of English in the qualitative phase of a mixed-methods study reinforced the conceptualization of formative assessment as a unified framework. However, they elucidated the manifestations of Jamaica’s colonial past and the language context in Jamaican classrooms that necessitated changes to …

Assistive Technologies In Libraries For Visually Impaired Students And Teachers, Dhananjay B. Sutar Dr., Sujata Ashish Hande Mrs.

Library Philosophy and Practice (e-journal)

The present research article highlights on the Assistive Technologies to be essentially made available in libraries for extending the library facilities, information services and products in usable form to readers with visual impairment. Visually impaired readers face many problems in continuing their education if assistive technologies are not made available to them. In today's 21^st century, various advancements in information and communication technologies, including assistive technologies for visually impaired people have come along that can assist them to achieve their educational goals.

Usage Statistics Of E-Resources During Pandemic Period: A Case Study Of Chandigarh University Library, Ram Veer, Subhajit Panda

Library Philosophy and Practice (e-journal)

Electronic resources are the electronic representation of information. Because of the easy accessibility, low cost and effective presentation with multimedia tools, e-resources have become the most popular source of information. The present research focuses on the usage statistics of e-resources during the pandemic period lockdown and restricts its scope to Chandigarh University Library. This study survey was conducted by distributing 200 questionnaires structured on a Google Form among the students, staff and faculty members of Chandigarh University. Out of all distributed questionnaires, 158 questionnaires were selected as a valid response for the study. Various statistical methods have been used for …

Mss0402. Carroll And Pat Cloar Collection Finding Aid

Special Collections Finding Aids

The collection comprises correspondence, scrapbooks, diaries, newspaper and magazine clippings, photographs and photograph albums, notebooks, sketch pads and drawings documenting the life and work of Memphis, Tennessee, artist Carroll Cloar (1913-1993).

Digital Technologies For Monitoring And Improving Treatment Adherence In Children And Adolescents With Asthma: A Scoping Review Of Randomised Controlled Trials, Madison Milne-Ives, Ching Lam, Edward Meinert

School of Nursing and Midwifery

No abstract provided.

Benzopyrazine-Based Small Molecule Inhibitors As Trypanocidal And Leishmanicidal Agents: Green Synthesis, In Vitro, And In Silico Evaluations, Jonathan Rock, Daniel Garcia, Omar Espino, Shaila A. Shetu, Manuel J. Chan-Bacab, Rosa Moo-Puc, Navin B. Patel, Gildardo Rivera, Debasish Bandyopadhyay

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Chemistry)

World Health Organization (WHO) identified twenty tropical disease categories as neglected tropical diseases (NTDs)1. Chagas’ disease (also known as American trypanosomiasis) and leishmaniasis are two major classes of NTDs. The total number of mortality, morbidity, and disability attributed each year due to these two categories of diseases in magnitudes is much higher than the so-called elite diseases like cancer, diabetes, AIDS, cardiovascular and neurodegenerative diseases. Impoverished communities around the world are the major victim of NTDs. The development of new and novel drugs in the battle against Chagas’ disease and leishmaniasis is highly anticipated. An easy and straightforward …

Expert System For Classification Of Power System Events., Amany El-Zonkoly

Mansoura Engineering Journal

This paper presents an expert system that is able to classify different types of power quality (PQ) events. The expert system uses the voltage waveforms and distinguishes the different types of voltage dips and swells. Both Fourier and Wavelet analyses are applied for extracting distinct features of various types of events as well as for classifying the events.

A Structural Study Of The Cytoplasmic Chaperone Effect Of 14-3-3 Proteins On Ataxin-1, Seppe Leysen, Rebecca Jane Burnley, Elizabeth Rodriguez, Lech-Gustav Milroy, Lorenzo Soini, Carolyn J. Adamski, Larissa Nitschke, Rachel Davis, Tomas Obsil, Lucas Brunsveld, Tom Crabbe, Huda Yahya Zoghbi, Christian Ottmann, Jeremy Martin Davis

Faculty Publications

Expansion of the polyglutamine tract in the N terminus of Ataxin-1 is the main cause of the neurodegenerative disease, spinocerebellar ataxia type 1 (SCA1). However, the C-terminal part of the protein - including its AXH domain and a phosphorylation on residue serine 776 - also plays a crucial role in disease development. This phosphorylation event is known to be crucial for the interaction of Ataxin-1 with the 14-3-3 adaptor proteins and has been shown to indirectly contribute to Ataxin-1 stability. Here we show that 14-3-3 also has a direct anti-aggregation or "chaperone" effect on Ataxin-1. Furthermore, we provide structural and …

Incident At The Lakes Of The Clouds, J. B. Sisson

Appalachia

No abstract provided.

Books And Media

Appalachia

Along on the Wall by Alex Honnold with David Roberts. AMC’s Best Sea Kayaking in New England by Michael Daugherty. AMC’s Best Day Hikes in the White Mountains by Robert M. Buchsbaum. Living with Bears Handbook 2nd Edition by Linda Masterson. The Green Guide to Low-Impact Hiking and Camping by Laura and Guy Waterman. Deep Down Dark by Hector Tohar. The Man Who Built the Sierra Club by Robert Wyss. Welcome to the Goddamn Ice Cube by Blair Braverman. Acadia National Park: A Centennial Celebration with photography by Tom Blagden Jr.

The Leap: Journalist Meets Goat In Glacier National Park, Lisa Densmore Ballard

Appalachia

Photographer Lisa Densmore Ballard goes in search of mountain goats in Glacier National Park. The agile animals are a subfamily of hoofed animals, the sole members of their genus Oreamnos.

Appalachia Winter/Spring 2017: Complete Issue

Appalachia

Winter/Spring 2017 - Volume LXVIII, Number 1 - Issue #243. Glaciers Melt, Mountain Goats Cope: Also, The Everyday Becomes Strange

Polyelectrolyte Microgels As Self-Defensive Biomaterials, Matthew Libera

Amgen Seminar Series in Chemical Engineering

Preventing the bacterial colonization of tissue-contacting biomedical devices is a key scientific challenge rich with potential clinical impact. Much research has concentrated on antimicrobial modification of device surfaces either by incorporating continuous elution mechanisms or by covalent surface tethering. Both strategies have shortcomings. As an alternative, we are studying a microgel-based approach to modulate the antimicrobial properties of surfaces. Notably, polyelectrolyte microgels can be electrostatically deposited to form sub-monolayer microgel coatings on complex 3-D devices. We have shown that the size and spatial distribution of antifouling PEG-based microgels critically controls the competing requirements for bacterial repulsion and tissue-cell adhesion/proliferation. Incorporating …

News And Notes

Appalachia

Guyot Campsite renovations. Hiker center expands in Monson, Maine. Baxter State Park will limit Katahdin hikers. A New Hampshire woman, Sue Johnston, completes a peakbagging milestone, “the grid” (all of the 48 New Hampshire mountains above 4,000 feet in every month) in one calendar year. Memories of 5 Joy Street: a photo essay of several of the rooms in the Appalachian Mountain Club’s headquarters in the Beacon Hill section of Boston between 1923 and 2017.

Singing Waters: Unplanned Conservation On Four Northern Maine Rivers, Lloyd C. Irland

Appalachia

An essay on the conservation of Maine’s rivers, the Allagash, St. John, and East and West Branches of the Penobscot by forester and research scientist Lloyd C. Irland.

A Woman In The Woods, Working: A Trail Leader Learns To Trust Her Own Steady Hand, Sally Manikian

Appalachia

A trail crew leader in the White Mountains of New Hampshire learns to trust her own steady hand with tools she had once believed she could not master. “In the early months of my trail job,” Sally Manikian writes, “I held the inane idea that only men knew how to build things.”

The Perceptions Of Teachers Of Students With Visual Impairments On Students With Visual Impairments And Graphing: How To Teach, Ashley N. Nashleanas Ph.D.

Journal of Science Education for Students with Disabilities

Many gaps exist in what is known around teaching students with visual impairments (SVI) about how to use graphs (Rosenblum et al., 2018; Rosenblum & Herzberg, 2015; Zebehazy & Wilton, 2014a;2014b;2014c). When teachers first experience a student with a visual impairment, some of the questions that come to mind are: How can I be sure this student understands what I am saying about these graphs I show on the board? Will this student be able to keep up? The study herein, based on findings from Author (2018), serves as a guide for teachers to consider in the case that SVI …

The Playground: An Online Summer Camp For Deaf And Hard Of Hearing Children, Emma Monson, Krista Schumacher, Annmarie Thomas

Journal of Science Education for Students with Disabilities

The PLAYground summer camp was developed by the Playful Learning Lab (PLL) at the University of St. Thomas, an undergraduate research group with a focus on learning through play. Through a partnership with a local school serving deaf and hard of hearing students, the PLAYground was designed to provide content to the deaf and hard of hearing community. Over the course of 8 weeks, 84 students were provided with materials that correspond with activities on the website. Each activity is accompanied with a lesson plan and video, both of which are available in English, American Sign Language, Spanish, and Arabic. …

Build Your Own Body Mod: Empowerment Through Prototyping And Design, Anaiss Arreola, Katherine R. Ganim

Journal of Science Education for Students with Disabilities

When you don’t have a hand, what could you have instead? This article introduces the impact of inviting youth with disabilities to learn tools and technology to design their own solutions and advocate for their own future. This approach to programming is rooted in a mindset of designing WITH, not FOR. Not only are design outcomes improved when users are incorporated into the process, but this approach has been shown to improve confidence in creating one’s own solutions. These programs include hands-on “design-your-own-body-mod” workshops, as well as a budding inclusive design consultancy led by youth with disabilities. Through this programming, …

Science Mapping Analysis Of Digital Humanities Research: A Scientometric Study, Nidhi Gupta, Prof. Rupak Chakravarty

Library Philosophy and Practice (e-journal)

Purpose– The purpose of this paper is to use scientometric analysis to identify the current state of the academic literature regarding Digital humanities(DH) and analyze its knowledge base such as highly contributing researchers, countries, organizations, sources, keyword analysis and subject areas.

Design/methodology/approach– This study carried out a scientometric study on DH literature, 2909 records were retrieved from Scopus database, time span chosen as 2005-2020 as 15 years of study in DH research area. Retrieved data can be analyzed by using VOSviewer,Bibliometrix R package scientometric tools.

Findings – The findings suggested the enormous proliferation of DH research during last …

Learning In Convolutional Neural Networks Accelerated By Transfer Entropy, Adrian Moldovan, Angel Caţaron, Răzvan Andonie

Computer Science Faculty Scholarship

Recently, there is a growing interest in applying Transfer Entropy (TE) in quantifying the effective connectivity between artificial neurons. In a feedforward network, the TE can be used to quantify the relationships between neuron output pairs located in different layers. Our focus is on how to include the TE in the learning mechanisms of a Convolutional Neural Network (CNN) architecture. We introduce a novel training mechanism for CNN architectures which integrates the TE feedback connections. Adding the TE feedback parameter accelerates the training process, as fewer epochs are needed. On the flip side, it adds computational overhead to each epoch. …