scholarly journals Multimodal Approach for Kayaking Performance Analysis and Improvement

2020 ◽  
Vol 19 (2) ◽  
pp. 51-76
Author(s):  
G. Nagy ◽  
Zs. Komka ◽  
G. Szathmáry ◽  
P. Katona ◽  
L. Gannoruwa ◽  
...  
Keyword(s):  
Output Power ◽  
Arithmetic Mean ◽  
Learning Approaches ◽  
Multimodal Approach ◽  
Multimodal Analysis ◽  
Weighted Arithmetic ◽  
Research Problems ◽  
Technique Optimization ◽  
No Gold Standard ◽  
The Relationship

AbstractArtificial Intelligence (AI) invades fields where sophisticated analytics has not been applied before. Modality refers to how something happens or is experienced. Multimodal datasets are beneficial for solving complex research problems with AI methods. Kayaking technique optimization has been challenging, as there seems to be no gold standard for effective paddling techniques since there are outstanding athletes with profoundly different physical capabilities and kayaking styles.Multimodal analysis can help find the most effective paddling techniques for training and competition based on individuals’ abilities.We describe the characteristics of the output power of kayak athletes and Electromyogram (EMG) measurements collected from the most critical muscles, and the relationship between these modalities. We propose metrics (weighted arithmetic mean difference and variability of power output and stroke duration) suitable for discerning athletes based on how efficiently and correctly they perform particular training tasks. Additionally, the described methods (asymmetry, coactivation, muscle intensity-output power) help athletes and coaches in assessing their performance and compare it with others based on their EMG activities.As the next step, we will apply machine-learning approaches on the synchronized dataset we collect with the described methods to reveal desirable EMG and stroke patterns.

scholarly journals Teaching Business Statistics: Some Useful Relationships

2020 ◽  
Vol 15 (5) ◽  
pp. 73
Author(s):  
Philip F. Rice ◽  
Chris Brune
Keyword(s):  
Geometric Mean ◽  
Joint Probability ◽  
Arithmetic Mean ◽  
Simple Arithmetic ◽  
Weighted Arithmetic ◽  
Multiplication Rule ◽  
Business Statistics ◽  
Statistics Course ◽  
Compound Interest ◽  
The Relationship

The purpose of this paper is to suggest an instructional approach in the introductory business statistics course that utilizes relationships between separately introduced topics. The paper will explore three “useful relationships” that can assist classroom instruction: (1) the relationship between the simple arithmetic mean, the weighted arithmetic mean, and the expected value of a discrete probability distribution; (2) the relationship between the use of the multiplication rule to calculate the joint probability associated with two events, use of tree diagrams, and the use of the binomial and hypergeometric distributions; and (3) the relationship between the geometric mean and the compound interest rate. Each discussion includes detailed examples of calculations to demonstrate the relationships.

Construction of risk in road safety advertising: a multimodal analysis of Vietnamese child helmet awareness advertisements

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hoang Van Nguyen
Keyword(s):  
Road Safety ◽  
Expert Knowledge ◽  
Multimodal Approach ◽  
Traditional Values ◽  
Multimodal Analysis ◽  
Multimodal Discourse Analysis ◽  
Multimodal Discourse ◽  
Comprehensive Picture ◽  
Media And Communication

AbstractThe discourses of risk serve to organise the ways in which we understand and respond to potential harms and threats, which have become a major concern in our daily life. However, the discourses of risk have not been extensively investigated using linguistic text-based methods on the multimodal level, nor deeply examined beyond Western contexts. Grounded in the literature of risk and multimodal discourse, the aim of the study is to demonstrate Multimodal Discourse Analysis from a Systemic Functional Linguistics perspective as a potential methodology to investigate how risk discourses are constructed in and through semiotic resources in a non-Western setting. Through a case study of child helmet awareness advertisements in Vietnam, the multimodal analysis reveals a comprehensive picture of risk discourses constructed across various semiotic modes. In this analysis, the discourses of risk are constructed through a negotiation of expert knowledge and traditional values to encourage the audience to take actions and provide helmets for their children. Findings of the study demonstrate the use of Systemic Functional multimodal approach to media and communication to provide evidence for risk discourses in the Vietnamese setting, which are at odds with the current literature and can potentially be extended to other contexts.

Power Feedward Strategy of Grid-Connected Inverter Based on Direct Power Decoupling

2013 ◽  
Vol 331 ◽  
pp. 311-314
Author(s):  
Chun Peng Fu ◽  
Yong Qiang Zhu
Keyword(s):  
Output Power ◽  
Mathematic Model ◽  
Direct Power ◽  
Loop Control ◽  
Grid Voltage ◽  
Voltage Change ◽  
Power Decoupling ◽  
Grid Connected Inverter ◽  
The Relationship ◽  
Power Response

Take into account grid inverter that using direct power control is vulnerable to the disturbance of grid voltage, a control algorithm is proposed based on the relationship between the power and voltage, which is deduced according to the mathematic model of the inverter that using double-loop control strategy. The change amount of the output power of inverter is added to the reference of power closed-loop as power feedforward, which improves the dynamic response to the grid voltage change. Simulations with EMTDC/PSCAD are carried out and the comparison of output power response to grid voltage change between control with and without power feedforward verifies its effectiveness.

Flight Simulation for Research

1964 ◽  
Vol 68 (646) ◽  
pp. 645-652 ◽  
Author(s):  
D. H. Perry ◽  
J. M. Naish
Keyword(s):  
Flight Simulation ◽  
Simulation Studies ◽  
Aircraft Control ◽  
Motion Cues ◽  
Stability And Control ◽  
Research Problems ◽  
And Control ◽  
The Relationship ◽  
Aircraft Stability And Control ◽  
Vtol Aircraft

SummarySome of the uses of ground based flight simulation as a research tool to aid the design of new aircraft and their equipment are described. The function of the simulator is to provide a method for investigating humon flying tasks in the laboratory, so that the relationship between the pilot's capabilities and the equipment's characteristics can be systematically studied. The paper is presented in two parts describing recent work on two research simulators at the RAE.Part I deals with the use of simulation for studying aircraft stability and control characteristics. The equipment used at RAE for this work is described, with particular emphasis on methods of presenting to the pilot a simulated view of the outside world, and for reproducing some of the motion cues which he experiences in flight. Experimental evidence of the importance of these simulation cues when making aircraft control assessments is also presented. Several examples of simulation studies into the control of conventional and VTOL aircraft are given, to illustrate the type of research problems in this field which may be tackled and the techniques involved in solving them.

scholarly journals The Weighted Arithmetic Mean–Geometric Mean Inequality is Equivalent to the Hölder Inequality

Symmetry ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 380 ◽  
Author(s):  
Yongtao Li ◽  
Xian-Ming Gu ◽  
Jianxing Zhao
Keyword(s):  
Geometric Mean ◽  
Arithmetic Mean ◽  
Hölder Inequality ◽  
Power Mean ◽  
Weighted Arithmetic ◽  
Mathematical Equivalence ◽  
Power Mean Inequality ◽  
Mathematical Relations

In the current note, we investigate the mathematical relations among the weighted arithmetic mean–geometric mean (AM–GM) inequality, the Hölder inequality and the weighted power-mean inequality. Meanwhile, the proofs of mathematical equivalence among the weighted AM–GM inequality, the weighted power-mean inequality and the Hölder inequality are fully achieved. The new results are more generalized than those of previous studies.

scholarly journals La relación entre conocimiento común y conocimiento científico en el contexto de la enseñanza, aprendizaje y cambio conceptual de las ciencias

2017 ◽  
Author(s):  
Alfonso Claret Zambrano
Keyword(s):  
Scientific Knowledge ◽  
Research Question ◽  
Hard Core ◽  
Conceptual Structure ◽  
Research Approach ◽  
Previous Knowledge ◽  
Research Problems ◽  
Teaching Learning ◽  
Relationship Of ◽  
The Relationship

This paper analyses the research approach on the relationship between scientificscholar knowledge of the teacher and common previous knowledge of students inschool within the context of teaching, learning and conceptual change in sciences.The paper shows two sections: the first is about conceptual historical development ofthe research question. ln this sense the first question was How the students learnsciences and its transformation into the second, third , fourth and fifth question wasjustified on the light of the reading of the following works, mainly: Piaget, A usubel ,Driver, Vygotsky, and Bachelard, Canguilhem, Kuhn, Lakatos, Popper and othersauthors. The second explains the research question taking into consideration themeaning of the teacher, the pupil and the scientific knowledge in the classroom. Forthis purpose it is necessary to design a conceptual structure in order to analyze therelations, the concepts and the research problems of the teaching, learning andassessment in sciences. The structure shows the relationship of the teacher and thepupilas knowledge relationship. This is the cause why scientific knowledge must beconsidered as the hard core of the science teaching. But scientific knowledge in thiscase is seen as a product of the its historical and epistemological development andthe way as scientific knowledge changes in science is the basis forthinking aboutconceptual change of students in the classroom. The paper ends showing the aimsof the researcher engaged in this approach.

scholarly journals Instructor facilitation mediates students’ negative perceptions of active learning instruction

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0261706
Author(s):  
Elizabeth S. Park ◽  
Ashley Harlow ◽  
Amir AghaKouchak ◽  
Brigette Baldi ◽  
Nancy Burley ◽  
...  
Keyword(s):  
Active Learning ◽  
Student Perceptions ◽  
Negative Relationship ◽  
Task Value ◽  
Observation Data ◽  
Learning Approaches ◽  
Perceived Utility ◽  
Instructor Effectiveness ◽  
The Relationship ◽  
And Task

Studies have demonstrated students’ resistance to active learning, despite evidence illustrating that their learning is improved relative to students in lectures. Specifically, while active learning and group work are effective at engaging students in their learning process, studies report that students’ perceptions of active learning approaches are not always positive. What remains underexplored is whether students’ perceptions of active learning improve with effective instructor facilitation and whether there exists differential perceptions between racially minoritized students and represented students. Here, we estimate students’ perceptions of effective instructor facilitation as the mediator in the relationship between active learning and perceptions of learning and perceived utility for class activities (task value). Then, we examine differences by racial identification. We collected classroom observation data to empirically categorize courses as active learning or lecture-based and surveyed 4,257 college students across 25 STEM classrooms at a research-intensive university. We first examined the relationship between active learning on student perceptions and found a negative relationship between active learning and perceptions of learning and task value for both racially minoritized students and represented students. Next, we assessed whether students’ perceptions of instructor effectiveness in facilitating group activities mediate these negative relationships. We found that, on average, students of all races were more likely to positively perceive instructor facilitation in active learning classes relative to lectures. In turn, the positive perceptions of instructor facilitation partially suppressed the negative relationship between active learning and perceptions of learning and task value. These results demonstrate that effective instructor facilitation can influence both students’ self-assessment of learning and perceived utility of the learning activities, and underscores the importance of developing pedagogical competence among college instructors.

Geospatial Suitability Indices Toolbox (GSI Toolbox)

2021 ◽  
Author(s):  
Christina Saltus ◽  
Todd Swannack ◽  
S. McKay
Keyword(s):  
Habitat Suitability ◽  
Geometric Mean ◽  
Arithmetic Mean ◽  
Limiting Factor ◽  
Ecological Processes ◽  
Weighted Arithmetic ◽  
Suitability Index ◽  
Multiple Parameter ◽  
Spatially Distributed

Habitat suitability models are widely adopted in ecosystem management and restoration, where these index models are used to assess environmental impacts and benefits based on the quantity and quality of a given habitat. Many spatially distributed ecological processes require application of suitability models within a geographic information system (GIS). Here, we present a geospatial toolbox for assessing habitat suitability. The Geospatial Suitability Indices (GSI) toolbox was developed in ArcGIS Pro 2.7 using the Python® 3.7 programming language and is available for use on the local desktop in the Windows 10 environment. Two main tools comprise the GSI toolbox. First, the Suitability Index Calculator tool uses thematic or continuous geospatial raster layers to calculate parameter suitability indices based on user-specified habitat relationships. Second, the Overall Suitability Index Calculator combines multiple parameter suitability indices into one overarching index using one or more options, including: arithmetic mean, weighted arithmetic mean, geometric mean, and minimum limiting factor. The resultant output is a raster layer representing habitat suitability values from 0.0 to 1.0, where zero is unsuitable habitat and one is ideal suitability. This report documents the model purpose and development as well as provides a user’s guide for the GSI toolbox.

scholarly journals Science learning motivation as correlate of students’ academic performances

2016 ◽  
Vol 6 (3) ◽  
pp. 209 ◽  
Author(s):  
Nhorvien Jay P. Libao ◽  
Jessie John B. Sagun ◽  
Elvira A. Tamangan ◽  
Agaton P. Pattalitan ◽  
Maria Elena D. Dupa ◽  
...  
Keyword(s):  
Science Learning ◽  
Extrinsic Motivation ◽  
Biological Science ◽  
Learning Motivation ◽  
Learning Science ◽  
Science Students ◽  
Research Problems ◽  
Relationship Of ◽  
The Relationship

This study was designed to analyze the relationship  of students’ learning motivation and their academic performances in science. The study made use of 21 junior and senior Biological Science students to conclude on the formulated research problems. The respondents had a good to very good motivation in learning science. In general, the extent of their motivation do not vary across their sex, age, and curriculum year. Moreover, the respondents had good academic performances in science. Aptly, extrinsic motivation was found to be related with their academic performances among the indicators of motivations in learning science. 

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