Digital Commons Network^™

The Synchronous Grasping Method Of Virtual-Real Assembly Robot Based On Digital Twin, Jian Xu, Gaofeng Liu, Yijian Zhao, Zili Zheng, Huanying Yan

Journal of System Simulation

Abstract: A method based on digital twin for assembly robot virtual-real synchronization and grasping is proposed to address the issues of poor intelligent grasping accuracy and difficult data processing in assembly tasks for industrial robots. Based on the digital twin, a digital twin assembly robot virtual-real synchronization and grasping architecture is designed. The OPC UA information model is built by classifying multi-source heterogeneous data, and the OPC UA communication protocol is used as a bridge for data communication of the assembly robot, achieving virtual-real synchronization. The convolutional neural network is further trained using the virtual robot to improve the grasping …

Research On Autonomous Decision-Making In Air-Combat Based On Improved Proximal Policy Optimization, Dianwei Qian, Hongmin Qi, Zhen Liu, Zhiming Zho, Jianqiang Yi

Journal of System Simulation

Abstract: To address the problems of high information redundancy and slow convergence speed of traditional reinforcement learning in air-combat autonomous decision-making applications, a proximal policy optimization air-combat autonomous decision-making method, based on dual observation and composite reward is proposed. A dual observation space, which contains interaction information as the main information and individual feature information as a supplement, was designed to reduce the influence of redundant battlefield information on the training efficiency of the decision model. A composite reward function combining result reward and process reward was designed to improve convergence speed. The generalized advantage estimator was applied in the …

Research On System-Of-Systems Confrontation Simulation Method Based On Operation Loops, Shan Zhong, Yesheng Zhu, Menglu Zhou

Journal of System Simulation

Abstract: In the field of modeling and analyzing capabilities for operation system-of-systems (SoS), traditional structured capability assessment models lack the analysis of the interaction between both rivals and armies in different roles. The system model based on operation loop theory can be combined with the relationship between sensor, decision-making, influence, and target nodes for system capability calculation, but the existing model is usually only suitable for static analysis and cannot be used for dynamic simulation of SoS confrontation. In order to solve the problems above, a SoS confrontation simulation method based on operation loops is proposed. It abstracts both rivals’ …

An Intelligent Adversaries Behavior Simulation Technology Based On Improved Behavior Trees, Fang Zhou, Bo Fan, Xiaoyi Liu, Yishan Ding, Ningxin Zhang, Yachao Shao, Xiaoyu Zhai

Journal of System Simulation

Abstract: Intelligent algorithm/intelligent platform/intelligent system intelligence capability testing and evaluation need to solve high-level intelligent opponent simulation problems, an intelligent opponent behavior simulation technology based on improved behavior tree is proposed. Four types of behavior tress nodes are designed, including behavior control, combat tasks, behavior actions, and execution condition node. Five atomic behavior actions and parameters are established, including maneuver, reconnaissance and early warning, command and decision-making, firepower strike, and electronic interference node. Five atomic condition nodes are provided, including target selection, weapon launch, and incoming weapon judgment node. The intelligent adversarial behavior simulation system is designed, including a behavior …

Study On Invulnerability Of Urban Rail Network Considering Sum Of The Neighbors Degree, Shuqing Li, Yixiao Song, Guojian Zhong

Journal of System Simulation

Abstract: In order to solve the problem of network cascade paralysis caused by urban rail station or line failure, considering the influence of the first-order neighborhood of network nodes, the load distribution impedance coefficient is proposed based on the nonlinear capacity load model, and a nonlinear capacity load optimization model considering the sum of the neighbors degree is constructed. By optimizing load structure, the alternative probability of nodes during load redistribution is adjusted to reduce the number of node failures in the cascading process, thereby the rail network invulnerability is improved. Taking Chongqing rail network as an example, the rail …

Multi-Step Information Aided Q-Learning Path Planning Algorithm, Yuelong Wang, Songyan Wang, Tao Chao

Journal of System Simulation

Abstract: To improve the path planning capability of mobile robots in a static environment and solve the problem of slow convergence of the traditional Q-learning algorithm in path planning, this paper proposes a multi-step information-aided Q-learning improvement algorithm. Using the multi-step information of greedy action in ε -greedy strategy and length of the historical optimal path to update the eligibility traces, which makes the effective eligibility traces work continuously in the iteration of the algorithm and solves the loop traps that may fall into with the preserved multi-step information; using the local multiflower pollination algorithm to initialize the Q-value table …

Investigating The Use Of Lesson Study As A Professional Development Model For 4-H Educators At 1890 Land Grant Universities, Cynthia Pierfax, Travella Free, Tiffany Franklin, Manola Erby, Lynn Schmitt-Mcquitty, C L. Meehan, Martin H. Smith

Journal of Extension

There is a defined need to provide accessible and effective professional development for 4-H educators. Lesson study is a Community of Practice-based approach to educator professional development. Prior research has shown lesson study to be effective with 4-H staff, adult volunteers, and teen volunteers. This inquiry, a multi-site case study, was designed to investigate the application of lesson study in authentic contexts with 4-H county agents from 1890 land-grant universities. Quantitative and qualitative measures revealed improved preparedness, participation, and camaraderie among participating educators. Other benefits to participants included improved lesson planning and implementation.

Carbon Footprint Analysis And Low-Carbon Optimization Method Simulation Study Of Power Transformer Based On Digital Twin Technology, Dongxue Li, Yan Liu, Boyao Shen, Yongteng Jing, Qiang Ma, Ran Liu

Journal of System Simulation

Abstract: Power transformers are the main energy-consuming equipment for substations. According to the goal of “carbon peak, carbon neutralization” in China, it is of great significance to accurately calculate the carbon footprint of transformers and seek low-carbon optimization methods. A method for constructing a digital twin model of power transformer magnetic characteristics is proposed. Based on the three-dimensional electromagnetic time-harmonic field finite element analysis method, a threedimensional model of SZ11-31.5MVA/66kV power transformer is established. The transformer loss map is obtained under fluctuating load condition, and the transformer digital twin model is constructed. The carbon footprint of the transformer is analyzed, …

Uav Online Track Planning Based On Dmoea-Aptc Algorithm, Erchao Li, Shenghui Zhang

Journal of System Simulation

Abstract: In order to solve the dynamic multi-objective optimization problem with time correlation, this paper introduces the concept of time correlation feature and establishes the model of UAV timecorrelation dynamic multi-objective optimization problem moedl on the basis of UAV online track planning problem, and proposes a dynamic multi-objective double-layer optimization algorithm using adaptive predictive response mechanism and time-correlation optimization mechanism (DMOEA-APTC). The intensity of environmental change was judged according to the correlation of environmental change and different response mechanisms were used to quickly adapt to environmental change. In the optimization process, the least square method was used to learn the …

Visual Robot Obstacle Avoidance Planning And Simulation Using Mapped Point Clouds, Hanlin Huo, Xiangjun Zou, Yan Chen, Xinzhao Zhou, Mingyou Chen, Chengen Li, Yaoqiang Pan, Yunchao Tang

Journal of System Simulation

Abstract: In response to the large and complex data volume and high redundancy of visual point cloud obstacle recognition in complex unstructured orchard environments, which severely impacts the real-time performance and efficiency of harvesting operations, a point cloud compression algorithm is proposed based on point cloud segmentation to enhance the efficiency of point cloud obstacle recognition and environmental adaptability. An Informed RRT* based approach is used combined with an inverse projection algorithm, mapping-based informed RRT*(M-Informed RRT*) to solve the harvesting path problem. By constructing a highly real-time and robust integrated robot system for sampling, perception, and obstacle avoidance, efficient obstacle …

An Improved Path Planning Algorithm For Mobile Robots, Haijie Sun, Hongjun San, Le Xiao, Dexin Yao, Jiupeng Chen, Xiaoyuan Yang

Journal of System Simulation

Abstract: To solve the problems of invalid sampling and non-optimal paths of the RRT, the quasi-stream avoidance algorithm is proposed. The RRT algorithm is introduced to specify the sampling interval to limit the sampling points and enhance the goal-oriented nature of sampling. The quasi-stream avoidance algorithm incorporating the A* algorithm (QSA*) is used to quickly bypass the obstacle when it is encountered. A path optimization algorithm is used to smooth the searched path. The simulation results show that compared with the RRT algorithm, the computation time of the RRT-QSA* algorithm is reduced by 96.83%~99.88%, the number of search nodes is …

The Effect Of Using The Swom Model On Graduate Students’ Acquisition And Retention Of Skills In Using The Statistical Analysis Program (Spss), Randa Ismail Sari, Elias Abu Younis

Alustath Journal for Human and Social Sciences

The research aimed to identify the effect of using the Swom model on graduate students acquiring and retaining the skills of using the statistical analysis program (Spss). It was conducted on a sample of graduate students in a number of colleges at the University of Damascus. The research sample was divided into two experimental groups that studied the skills of using it. The statistical analysis program (Spss) using the Swom model and a control group studied the skills of using the statistical analysis program (Spss) using the traditional method, then a post-achievement test was conducted for the control and experimental …

A Proposed Educational System For Teaching Social Studies And Its Impact On The Achievement Of First-Year Middle School Female Students, Rasha Ali Fahd

Alustath Journal for Human and Social Sciences

The current research aims to find out a proposed educational system for teaching social studies and its impact on the achievement of first-grade middle school female students. The current research is limited to first-grade middle school students at Umm Al-Muminin Girls’ Middle School in the city of Baghdad for the academic year 2023-2024. The researcher has adopted an experimental design with partial control ( An experimental group and a control group with a pre- and post-test. The research sample consisted of (66) female students from the first intermediate grade, with (33) female students for the experimental group and (33) female …

An Application Of The Sustainable Transformational Leadership Dimensions On Teacher’S Performance: A Social Network Analysis, Aymen Al Qaradaghi, Razan Kerkukli, Riazuddin Ahmed

Alustath Journal for Human and Social Sciences

Teacher’s performance is one of the arguable issues in the organization. Sustainable Transformational leadership and its dimensions play a big role to change the nature of teacher’s performance in the organization. In this study, sustainable transformational leadership dimensions were discussed and examined through social network analysis SNA as a tool to analyze and understand results. Data collection were conducted and 30 respondents participated in the questionnaire. Organizations are educational sectors and they are 3 organizations and mentioned as symbols in the study. This study, shows that both sustainable occupational training SOT and sustainable social training SST as dimensions of sustainable …

Frequency And Use Of Phrasal Verbs In Academic Writing, Mustafa Talib Al.Juboury

Alustath Journal for Human and Social Sciences

The present study deals with phrasal verbs. A phrasal verb can be used either intransitive when there is no noun phrase, or transitive when there is a noun phrase. Almost all transitive phrasal verbs allow adverb movement while such movement is not possible with the preposition. Phrasal verbs usually represent single semantic units that cannot be derived from the individual meanings of the two parts. Frequently used phrasal verbs in spoken and written discourse, the Corpus of Contemporary English was used. The problem of phrasal verb misunderstandings can be seen as a sign of deceptive teaching, insufficient attention, or lack …

The Effect Of The Hot Seat Strategy On Female Students’ Achievement And Attitudes Towards Geography, Thiqa Ali Abadul Wahid Aalabadi

Alustath Journal for Human and Social Sciences

The purpose of this study was to examine the effect of the hot seat strategy on female students’ achievement and attitudes towards geography. A quasi-experimental experiment was designed and implemented, specifically a pre test post test- control-group design with a quantitative approach. The study sample consisted of 50 second middle school students, Bagdad, Iraq . According to the T-test analysis, there were differences between treatment and control groups in academic achievement as well as in attitudes towards Geography in post- test mean scores in favor of the treatment group. This shows the effectiveness of the hot seat strategy intervention.

The Effect Of A Counseling Program Using Cognitive Reconstruction Style For Development Cognitive Flexibility For Secondary School Students, Jabbar Their Jabbar

Alustath Journal for Human and Social Sciences

:The present research aims to find out the effect of a counseling program using cognitive reconstruction style for development cognitive flexibility among Student sat Preparatory Stage, The researcher built the cognitive flexibility scale consisting of (30) items , then the researcher extracted the statistical characteristics of the scale. It was concluded that all items of the scale have a statistically significant differences and correlation. The validity and reliability of the scale were approved as the reliability coefficient by the test and retest method was (0.80), and the reliability value by the Cronbach’s alpha method was (0.77). The scale consisted of …

Psychometric Pound For The Daily Biorhythm Scale (Morningness - Eveningness) According To Some Variables, Abdulhameed Mohamed Sheban

Alustath Journal for Human and Social Sciences

The aim of this research is to verify the psychometric characteristics of the daily biorhythm scale (morning - evening) according to the variables of gender, specialization and achievement percentage of undergraduate students in the city of Aleppo in the Arab Republic. Theoretical and 50 students from applied colleges, the sample consisted of (43) males and (57) females, their ages ranged between (19-25) years, with an arithmetic mean (21.8) and a standard deviation (0.643), and the daily daily rhythm scale (morning) was used Evening) prepared by Terman et al. (2001), and the general estimate of the total academic materials obtained by …

Evaluating The Performance Of Social Studies Teachers In The Secondary Stage According To The Comprehensive Quality Standards, Muhammad Sadiq Muhammad Abu Daka

Alustath Journal for Human and Social Sciences

Abstract

The current research aims to identify "evaluating the performance of social studies teachers in the secondary stage according to the comprehensive quality standards" To achieve the research goal, the researcher followed the descriptive approach (survey study). The original research community consists of all social studies teachers in the secondary stage (middle and preparatory schools) for the academic year 2023/2024 AD, numbering (722) male and female teachers, at a rate of (20%) of the original research community (Directorate of Education of Rusafa / 3), with (105) male and female teachers in middle schools and (39) male and female teachers in …

The Effect Of 5es Model In Developing Fifth Graders' English Vocabulary Learning And Their ` Motivation, Dalal Fanar Abdulbaqi

Alustath Journal for Human and Social Sciences

Students in Iraq, who study using traditional methods, face difficulties in understanding the language. Textbooks and teachers are considered secondary resources in constructivist and collaborative learning, where the focus is on student interaction and building connections between what they already know and what they are learning.This research examines how the 5Es educational framework affects the motivation of fifth-grade students and their ability to acquire new English vocabulary. It may contribute to research on the 5Es model and its impact on the motivation and success of students learning English as a foreign language. A total of 100 fifth-grade students studying English …

Biochar And Biosorbents Derived From Biomass For Arsenic Remediation, Gaurav Sharma, Yaksha Verma, Chin Wei Lai, Mu Naushad, Jibran Iqbal, Amit Kumar, Pooja Dhiman

All Works

Global groundwater contamination by Arsenic (As) presents a grave danger to the health of living beings and wildlife, demanding comprehensive remediation strategies. This review delves into the complex landscape of arsenic remediation, encompassing its chemical forms, occurrences, sources, and associated health risks. Advanced techniques, notably biomass-derived adsorbents, emerge as promising and cost-effective solutions. The exploration spans preparing and modifying biomass-derived adsorbents, unraveling their adsorption capacity, influencing factors, isotherms, kinetics, and thermodynamics. Noteworthy attention is given to plant-agricultural waste, algal-fungal-bacterial, and iron-modified biomass-derived adsorbents. The comprehensive discussion of the adsorption mechanism highlights the efficacy of low-cost biomass, particularly from plant, animal, …

Innovative Use Of Google-Blogs To Overcome Socioeconomic And Technological Barriers In Pakistan: Link-List Gadgets As Digital Libraries., Zameer Hussain Baladi, Syed Razi Muhammad

Library Philosophy and Practice (e-journal)

Introduction: Access to educational and a research material has always been a challenge in a socio-economically challenged country like Pakistan, due to lack of financial resources, unavailability of electricity, and slow internet speeds. The use of Google blogs has promoted a new and innovative way, through which users can easily access knowledge content. This research sheds light on the creation and usefulness of digital libraries through the use of Google blogs and their link list gadgets.

Methods: Google is an international technology corporation that provides dozens of services, including Blogger. Blogger provides 25 modules or gadgets that offer …

Phototaxis Is A Satiety-Dependent Behavioral Sequence In Hydra Vulgaris, Soonyoung Kim, Krishna N Badhiwala, Guillaume Duret, Jacob T Robinson

Faculty, Staff and Students Publications

Understanding how internal states such as satiety are connected to animal behavior is a fundamental question in neuroscience. Hydra vulgaris, a freshwater cnidarian with only 12 neuronal cell types, serves as a tractable model system for studying state-dependent behaviors. We found that starved hydras consistently move towards light, while fed hydras do not. By modeling this behavior as a set of three sequences of head orientation, jump distance and jump rate, we demonstrate that the satiety state only affects the rate of the animal jumping to a new position, while the orientation and jump distance are unaffected. These findings yield …

دور المشرف التربوي في تحسين الكفايات المهنية (الأكاديمية والتربوية) للمعلمين الجدد من وجهة نظر المعلمين في مديرية تربية قصبة عمان, Ali Sameeh Ali Alkhateeb

Journal of the Association of Arab Universities for Research in Higher Education مجلة اتحاد الجامعات العربية للبحوث في التعليم العالي

هدفت الدراسة التعرف إلى دور المشرف التربوي فى تحسين الكفايات المهنية، (الأكاديمية والتربوية) للمعلمين الجدد، والتعرف على أساليب تطوير العمل الإشرافي تجاه برامج التأهيل التربوي والأكاديمي لهم، بالإضافة إلى التعرف على مدى انتقال أثر التدريب فى هذه البرامج، من وجهة نظر المعلمين أنفسهم، وتنبع أهمية هذه الدراسة من أهمية الإشراف التربوي في العملية التعليمية والتربوية، وما له من دور مهم في تنمية كفايات المعلمين الجدد في مديرية تربية قصبة عمان، ورفع مستواهم التربوي، وقد اعتمدت الدراسة على المنهج الوصفي من خلال أداتها البحثية (الاستبانة)، حيث طبقت على عينة من مجتمع الدراسة وهم (312) معلما ومعلمة في مديرية تربية قصبة عمان، …

A Culturally Situated Embodied Activity For Professional Development And Workshop Feedback, Jessi Lajos

Empowering Teaching Excellence Conference

In conjunction with the USU STEAM EXPO, USU Math and Stats faculty, graduate students, collaborators, and teachers in rural Utah districts came together for a cultural-exchange event. In collaboration with Jessica Benally (UC Berkeley) and Sindura Kularajan (USU), we facilitated a two day workshop for educators as part of this event. The purpose of the workshop was to address the need for teacher supports in rural districts of Utah (Bundock, 2023), respond to Coles et al. (2024) calls to make "gestures" towards socio-ecological practices in mathematics education, and promote epistemic pluralism-multiple ways of knowing and doing mathematics. The professional development …

A High Step-Up Parallel Boost/Quasi-Z-Source Pwm Dc-Dc Converter For Photovoltaic Applications, Mahdi Rezvanyvardom

Emirates Journal for Engineering Research

In this article, a novel DC-DC converter is proposed, which is derived from the parallel combination of a conventional boost converter and a Quasi-Z-Source converter. This converter benefits from the features of both mentioned converters. Compared to similar structures, the proposed converter has a suitable gain. This is due to the parallel combination of two voltage-boosting structures, namely boost and Quasi-Z-Source. The simple and linear circuit operation of the converter is another advantage. On the other hand, the control circuit of the converter is also simple and can be designed as PWM. Due to the Quasi-interleaved structure at the input …

Human Capital At Home: Evidence From A Randomized Evaluation In The Philippines, Noam Angrist, Sarah Kabay, Dean S. Karlan, Lincoln Lau, Kevin M. Wong

Education Division Scholarship

Children spend most of their time at home in their early years, yet efforts to promote human capital at home in many low- and middle-income settings remain limited. We conduct a randomized controlled trial to evaluate an intervention which encourages parents and caregivers to foster human capital accumulation among their children between ages 3 and 5, with a focus on math and phonics skills. Children gain 0.52 and 0.51 standard deviations relative to the control group on math and phonics tests, respectively (p<0.001). A year later effects persist, but math gains dissipate to 0.15 (p=0.06) and phonics to 0.13 (p=0.12). Effects appear to be mediated largely through instructional support by parents and not other parent investment mechanisms, such as more positive parent-child interactions or additional time spent on education at home beyond the intervention. Our results show that parents can be effective conduits of educational instruction even in low-resource settings.

A Critical Evaluation Of Loss Aversion As The Determinate Of Effort In Compensation Framing, Timothy W. Shields, James Wilhelm

ESI Working Papers

A robust finding in managerial accounting research is that participants prefer contracts framed as bonuses to economically equivalent contracts framed as penalties. Another finding is that participants put forth more effort when facing penalty contracts than equivalent bonus contracts. Both results are commonly described as due to loss aversion, an integral portion of prospect theory. We test whether loss aversion is correlated with higher effort in an experiment with two parts. In the first part, we elicit individual participants' loss aversion using two measures. In the second part of the experiment, participants choose costly effort to increase the likelihood of …

Destiny Functional Theory (Dft) Study Of Water Autoionization In Solvated Clusters, Kurt Kolasinski, Alex M. Salkowski

Chemistry Faculty Publications

We have implemented a cluster-continuum method using density functional theory (DFT) to model water clusters and various charged species derived from water. Two aims of this study are to determine the minimal basis required for proper modeling of water autoionization and the minimum number of explicit water molecules that are required to properly model the energetics of solvation. The thermodynamics of water autoionization converge following a modified power law to deliver chemically accurate values of the Gibbs energy change for autoionization with tractably small clusters. Convergence is slower and not exponential as assumed in previous work. We identify the n …

Q-Rational Functions And Interpolation With Complete Nevanlinna–Pick Kernels, Daniel Alpay, Paula Cerejeiras, Uwe Kaehler, Baruch Schneider

Mathematics, Physics, and Computer Science Faculty Articles and Research

In this paper we introduce the concept of matrix-valued q-rational functions. In comparison to the classical case, we give different characterizations with principal emphasis on realizations and discuss algebraic manipulations. We also study the concept of Schur multipliers and complete Nevanlinna–Pick kernels in the context of q-deformed reproducing kernel Hilbert spaces and provide first applications in terms of an interpolation problem using Schur multipliers and complete Nevanlinna–Pick kernels.