scholarly journals Sinusoidal Trajectory Generation Methods for Spacecraft Feedforward Control

2020 ◽  
Author(s):  
Kyle A. Baker
Keyword(s):  
Feedforward Control ◽  
Trajectory Generation ◽  
Direction Cosine ◽  
Euler Angle ◽  
Self Awareness ◽  
Spacecraft Dynamics ◽  
Step Size ◽  
Mathematical Basis ◽  
Simulink Model ◽  
High Level

The following is a brief walkthrough of material related to the modeling of spacecraft dynamics with feedforward control as the self-awareness declaration for deterministic artificial intelligence. Specifically, the focus will be on the analysis of various sinusoidal trajectory methods. The methods utilized are the basic MATLAB sine generation function, a Taylor series implementation, and two alternate algorithms for higher speed, lower precision and lower speed, higher precision implementations. The chapter features a brief summary of previous work investigating the impact of step size on Euler and Body angles. This is followed by a high level overview of Euler angle theory, quaternions, direction cosine matrices, kinematics, and dynamics to form a mathematical basis for the core material. With the numerical basis for the modeling efforts outlined, the results of running a SIMULINK model of spacecraft dynamics with feedforward control will be briefly analyzed and explored. The analysis will cover the impacts of varying step size with various sinusoidal trajectory generation methodologies.

scholarly journals Kinematics in the Information Age

Mathematics ◽  
2018 ◽  
Vol 6 (9) ◽  
pp. 148 ◽  
Author(s):  
Brendon Smeresky ◽  
Alexa Rizzo ◽  
Timothy Sands
Keyword(s):  
Attitude Control ◽  
Technology Development ◽  
Information Age ◽  
Direction Cosine ◽  
Euler Angle ◽  
Computational Time ◽  
Step Size ◽  
Aerospace Applications ◽  
Space Age ◽  
Digital Computers

Modern kinematics derives directly from developments in the 1700s, and in their current instantiation, have been adopted as standard realizations…or templates that seem unquestionable. For example, so-called aerospace sequences of rotations are ubiquitously accepted as the norm for aerospace applications, owing from a recent heritage in the space age of the late twentieth century. With the waning of the space-age as a driver for technology development, the information age has risen with the advent of digital computers, and this begs for re-evaluation of assumptions made in the former era. The new context of the digital computer defines the use of the term “information age” in the manuscript title and further highlights the novelty and originality of the research. The effects of selecting different Direction Cosine Matrices (DCM)-to-Euler Angle rotations on accuracy, step size, and computational time in modern digital computers will be simulated and analyzed. The experimental setup will include all twelve DCM rotations and also includes critical analysis of necessary computational step size. The results show that the rotations are classified into symmetric and non-symmetric rotations and that no one DCM rotation outperforms the others in all metrics used, yielding the potential for trade space analysis to select the best DCM for a specific instance. Novel illustrations include the fact that one of the ubiquitous sequences (the “313 sequence”) has degraded relative accuracy measured by mean and standard deviations of errors, but may be calculated faster than the other ubiquitous sequence (the “321 sequence”), while a lesser known “231 sequence” has comparable accuracy and calculation-time. Evaluation of the 231 sequence also illustrates the originality of the research. These novelties are applied to spacecraft attitude control in this manuscript, but equally apply to robotics, aircraft, and surface and subsurface vehicles.

Relationship of Spiritual well-being and emotional intelligence among Iranian' nursing students

2021 ◽  
Vol 15 (6) ◽  
pp. 1634-1640
Author(s):  
Javad Jafari ◽  
Asra Nassehi ◽  
Mohammadali Zareez ◽  
Seydamalek Dadkhah ◽  
Najmeh Saberi ◽  
...  
Keyword(s):  
Emotional Intelligence ◽  
Nursing Students ◽  
Pearson Correlation ◽  
Well Being ◽  
Self Awareness ◽  
Spiritual Well Being ◽  
The Mean ◽  
High Level ◽  
Relationship Of ◽  
Religious Wellbeing

Background: Among all aspects of nursing care, the spiritual one is the issue that has received little attention. Having spiritual wellbeing (SWB) is a necessity to provide appropriate spiritual care. In addition to, the Emotional intelligence (EI) is one of the most important factors in social and professional success and is essential for effective nursing practice. Therefore, aim of study was evaluating the Relationship between SWB and EI among nursing students. Methods: The sample of this descriptive-analytic study consisted of 136 nursing students studying at Bam University of Medical Sciences selected by convenience sampling method. The Bradberry and Greaves 28-item EI scale, Palutzian and Ellison SWB Scale were used to assess the total score of EI and SWB. Collected data were analyzed using descriptive statistics (mean and standard deviation), Pearson correlation coefficient, independent t-test and one-way ANOVA with SPSS v18. Results: The mean score of SWB and EI were 97.1±11.56 and 123.4 + 123.6, respectively. The mean score dimensions of SWB include (religious wellbeing 47.9±6.6, existential wellbeing 49.1±5.7) and dimensions EI: self-awareness, self-management, social awareness, and relationship management were 27.2 3 3.2, 36.2 2 5.4, 25.1 + 3.5 and 35.1 + 4.5, respectively. The majority of students have reported moderate level SWB and high level of emotional intelligence. The factors influencing their level of SWB were academic semester and age (p<0.05). Conclusion: Although the level of students' EI and SWB were at a desirable level in this study, due to the nature of nursing and the interaction between nurses and patients, providing a suitable learning environment for the development of EI is essential. Therefore, it is suggested that nursing policymakers should develop appropriate educational programs for nurses and provide curriculum for students to promote their knowledge and skills. Keywords: spiritual, religious, wellbeing, existential, nursing, emotional intelligence

scholarly journals [Factors Affecting Motivation on Learning Arabic] Faktor-Faktor yang Mempengaruhi Motivasi terhadap Pembelajaran Bahasa Arab

2015 ◽  
Vol 10 ◽  
pp. 82-97 ◽  
Author(s):  
Abdul Hakim Bin Abdullah ◽  
Ab. Aziz Bin Sulaiman ◽  
Wan Ismail Bin Wan Abdullah
Keyword(s):  
Quantitative Research ◽  
Teaching And Learning ◽  
Pearson Correlation ◽  
Secondary Level ◽  
Good Interest ◽  
Self Awareness ◽  
Validity And Reliability ◽  
Factors Affecting ◽  
And Performance ◽  
High Level

The purpose of this study is identify factors that affect students motivation in  learning Arabic among lower secondary level students at Naim Lilbanat National Religious Secondary School (SMKA), Kota Bharu, Kelantan. To achieve this purpose, four objectives have been outlined; to identify the level of students performance in Arabic, to identify the level of students interest towards Arabic, to identify factors that affect students motivation towards Arabic and to evaluate the relationship between motivation and students performance in Arabic. This quantitative research used questionnaires for collecting data. 93 students at lower secondary level at SMKA Naim Lilbanat were selected by simple random technique as the sample that represent 40% of the research population. A pilot study was conducted to ensure the quality of feasibility, validity and reliability of the instrument. The validity of items was obtained by referring to 10 experts of the subject matter. Coefficient of reliability value was obtained at a high level that is 0.86 through Cronbach Alpha test using SPSS version 19. The study found that 88 (94.6%) respondents have a good performance in Arabic and 78 (83.9%) respondents have a good interest towards Arabic. According to this study, five factors that affect students motivation in descending order are: attitude toward Arabic as they consider it as important, Arabic environment, attitude toward Arabic as they consider it as easy to learn and understand, self-awareness and the effectiveness of teaching and learning in the classroom. The Pearson correlation test showed that there is a positive significant relationship at a moderate level between level of interest and performance of Arabic among lower secondary level students at SMKA Naim Lilbanat.   Kajian ini bertujuan untuk mengenal pasti faktor-faktor yang membentuk motivasi terhadap pembelajaran bahasa Arab dalam kalangan pelajar peringkat menengah rendah di Sekolah Menengah Kebangsaan Agama (SMKA) Naim Lilbanat, Kota Bharu, Kelantan. Bagi mencapai tujuan tersebut, empat objektif telah digariskan iaitu mengenal pasti tahap pencapaian pelajar bagi mata pelajaran Bahasa Arab, mengenal pasti tahap minat pelajar terhadap mata pelajaran Bahasa Arab, mengenal pasti faktor-faktor yang mempengaruhi motivasi pelajar terhadap mata pelajaran Bahasa Arab dan menguji hubungan tahap motivasi pelajar dengan pencapaian Bahasa Arab. Kajian ini berbentuk kuantitatif dan menggunakan soal selidik sebagai alat pengumpulan data. Seramai 93 orang pelajar peringkat menengah rendah di SMKA Naim Lilbanat telah dipilih secara rawak mudah sebagai sampel yang merupakan 40% daripada jumlah populasi kajian. Satu kajian rintis telah dijalankan bagi menjamin kualiti kebolehlaksanaan, kesahan dan kebolehpercayaan instrumen. Kesahan instrumen diperoleh secara merujuk kepada 10 orang pakar bidang. Nilai keefisienan kebolehpercayaan item diperoleh pada tahap tinggi iaitu 0.86 daripada ujian Alpha Cronbach menggunakan perisian SPSS versi 19. Kajian ini mendapati 88 orang (94.6%) responden mempunyai pencapaian yang baik dalam mata pelajaran Bahasa Arab. Kajian ini juga mendapati 78 orang (83.9%) responden mempunyai tahap minat yang baik terhadap mata pelajaran Bahasa Arab. Lima faktor yang paling mempengaruhi motivasi pelajar secara turutan menurun ialah: sikap terhadap mata pelajaran Bahasa Arab yang dianggap penting, persekitaran bahasa Arab, sikap terhadap mata pelajaran Bahasa Arab yang dianggap mudah dipelajari dan difahami, kesedaran diri dan keberkesanan pengajaran dan pembelajaran dalam bilik darjah. Ujian korelasi Pearson memperlihatkan wujud hubungan positif yang signifikan pada kadar sederhana antara tahap motivasi dan pencapaian Bahasa Arab dalam kalangan pelajar peringkat menengah rendah di SMKA Naim Lilbanat.

Culture in Early Aboriginal Australia

1996 ◽  
Vol 6 (1) ◽  
pp. 3-36 ◽  
Author(s):  
Josephine Flood
Keyword(s):  
Special Focus ◽  
Self Awareness ◽  
Archaeological Evidence ◽  
Aboriginal Australia ◽  
Cognitive Archaeology ◽  
Australian Continent ◽  
The Dead ◽  
High Level ◽  
Almost All ◽  
Rock Shelters

On the basis of recent archaeological evidence it seems that humans first entered the Australian continent about 60,000 years ago. These first ocean-going mariners had a high level of technological and economic skill, and had spread right across Australia into a wide variety of environments by about 35,000 years ago. Pigment showing clear signs of use occurs in almost all Australia's oldest known occupation sites, and evidence of self-awareness such as necklaces and beads has been found in several Pleistocene rock shelters. Rituals were carried out in connection with disposal of the dead, for at Lake Mungo there is a 25,000-year-old cremation, and ochre was scattered onto the corpse in a 30,000-year-old inhumation. Complex symbolic behaviour is attested at least 40,000 years ago by petroglyphs in the Olary district, and other evidence suggests a similar antiquity for rock paintings. The special focus of this article is cognitive archaeology, the study of past ways of thought as derived from material remains, particularly the development of early Australian artistic systems.

The impact of perceived relationship to ancestors on the association between self-transcendence and psychopathology: A cross-cultural examination

2022 ◽  
pp. 136346152110490
Author(s):  
Simon Hanseung Choi ◽  
Clayton Hoi-Yun McClintock ◽  
Elsa Lau ◽  
Lisa Miller
Keyword(s):  
United States ◽  
The United States ◽  
Cross Cultural ◽  
Self Awareness ◽  
Depression And Anxiety ◽  
Negatively Associated ◽  
Self Transcendence ◽  
High Level ◽  
The Impact ◽  
India And China

Self-transcendence has been associated with lower levels of psychopathology. Most studies of self-transcendence have focused on samples of Western participants, and used scales addressing such concepts as self-awareness and feelings of oneness with the larger universe. However, a common Eastern notion of transcendence—perception of ongoing relationships with ancestors—has not been studied. We conducted a cross-cultural investigation of the association between self-transcendence, perceived degree of relationship to ancestors and depression and anxiety in the United States (N = 1499), China (N =  3,150), and India (N = 863). Degrees of perceived relationship to ancestors differed across countries, with the highest rates in India and China, and lowest rates in the United States. Self-transcendence was negatively associated with risks for depression and anxiety in the United States. In India, self-transcendence was also negatively associated with risks for depression and anxiety, and a strong perceived relationship with ancestors had further protective benefit. In China, those with a high level of perceived relationship to ancestors and a high level of self-transcendence exhibited lower levels of psychopathology. Results suggest that measures of relationship to ancestors might be included in future cross-cultural studies of transcendence.

Learning in the spotlight

2017 ◽  
Author(s):  
Aaron Williamon ◽  
Terry Clark ◽  
Mats Küssner
Keyword(s):  
High Stress ◽  
Sport Performance ◽  
Self Awareness ◽  
Performance Profiling ◽  
Performance Skills ◽  
Assessment Development ◽  
Self Regulated Learning ◽  
Effective Implementation ◽  
Regulatory Processes ◽  
High Level

The skills needed to perform music well and to communicate effectively as a performer are truly multifaceted. Increasingly, new methods and technologies are enabling a better understanding of how musicians perform and some of the reasons great performances are so compelling. Yet, optimizing performance skills can still be an elusive task for musicians. Implicit in this is the need for performers to attain a high level of self-awareness regarding their skills and behaviours, appropriate development of those skills and behaviours, and effective implementation of them within high-stress performance situations. This chapter provides an overview of self-regulated learning and examines its relevance to enhancing musical performance. To assist musicians in applying self-regulatory processes to their own assessment, development and review of performance skills, the authors introduce an approach widely used in sport—performance profiling—as a means of facilitating effective ‘self-regulated performing’.

scholarly journals What does success mean for autistic men? A narrative exploration of self-determination

2020 ◽  
Vol 5 ◽  
pp. 239694152094552
Author(s):  
Amanda A Webster ◽  
Susanne Garvis
Keyword(s):  
Quality Of Life ◽  
Self Determination Theory ◽  
Self Determination ◽  
Support Programs ◽  
Self Awareness ◽  
Self Reflection ◽  
The Social ◽  
High Level ◽  
Experience Difficulty

Background Studies involving autistic adults have often focused on negative outcomes and quality of life ratings. Aims This study provides a different viewpoint by examining the perspectives of autistic men who consider themselves to be successful. Methods Data were gathered from 10 men who shared their experiences and perceptions regarding their journey to achieve success. Self-determination theory provided a useful lens for examining the men’s narratives and understanding the factors that led to their success. Results Analysis of interviews revealed four main themes: (1) being my own self, (2) a competent professional, (3) solving problems in a neurotypical world, and (4) relating and connecting. These themes reflect the men’s perception of their own self-determination including their autonomy, competence, and relatedness with others. Conclusions The men’s sense of success was derived from their ability to achieve competence in their work, act without help or influence from others and demonstrate a high level of self-awareness and self-reflection. Despite this, many continued to experience difficulty in the social areas of their lives. Implications: These findings suggest that self-determination theory may present an alternative and more positive means of enacting support programs for autistic individuals, and males in particular.

scholarly journals The observant mind: self-awareness of attentional status

2010 ◽  
Vol 277 (1699) ◽  
pp. 3421-3426 ◽  
Author(s):  
Noriko Yamagishi ◽  
Stephen J. Anderson ◽  
Mitsuo Kawato
Keyword(s):  
Threshold Model ◽  
Discrimination Performance ◽  
Attentional Focus ◽  
Orientation Discrimination ◽  
Self Awareness ◽  
Neural Basis ◽  
Attentional Processes ◽  
Delay Times ◽  
Linear Rise ◽  
High Level

Visual perception is dependent not only on low-level sensory input but also on high-level cognitive factors such as attention. In this paper, we sought to determine whether attentional processes can be internally monitored for the purpose of enhancing behavioural performance. To do so, we developed a novel paradigm involving an orientation discrimination task in which observers had the freedom to delay target presentation—by any amount required—until they judged their attentional focus to be complete. Our results show that discrimination performance is significantly improved when individuals self-monitor their level of visual attention and respond only when they perceive it to be maximal. Although target delay times varied widely from trial-to-trial (range 860 ms–12.84 s), we show that their distribution is Gaussian when plotted on a reciprocal latency scale. We further show that the neural basis of the delay times for judging attentional status is well explained by a linear rise-to-threshold model. We conclude that attentional mechanisms can be self-monitored for the purpose of enhancing human decision-making processes, and that the neural basis of such processes can be understood in terms of a simple, yet broadly applicable, linear rise-to-threshold model.

Preventing and Alleviating Compassion Fatigue Through Self-Care: An Educational Workshop for Nurses

2017 ◽  
Vol 36 (4) ◽  
pp. 304-317 ◽  
Author(s):  
Andrea Adimando
Keyword(s):  
Risk Factors ◽  
Compassion Fatigue ◽  
Management Strategies ◽  
Self Care ◽  
Chronically Ill ◽  
Practice Change ◽  
Self Awareness ◽  
Negative Effects ◽  
Work Related ◽  
High Level

Though various authors have refined and described the concept of compassion fatigue (CF), the overarching features, predisposing factors, and potential consequences remain relatively consistent. Available literature demonstrates that caregivers caring for patients who are chronically ill and/or traumatized are at highest risk for developing CF. Potential consequences for unmitigated CF include physical, emotional, and work-related consequences, all of which can have negative effects on the quality and safety of care and degree of engagement with one’s employer. CF is further exacerbated by exposure to cumulative, unresolved stress and neglect of one’s own emotional needs over time. Caregivers must be knowledgeable on CF’s risk factors, symptoms, and management strategies to decrease its incidence and negative impacts. This article details the creation, execution, and evaluation of an evidence-based practice change project implemented with the goal of increasing knowledge needed to prevent, identify, and alleviate CF in high-risk nurses. The project involved a series of educational workshops containing information on CF’s risk factors, symptoms, and consequences, with a strong emphasis on self-awareness, self-care, and stress management. Pre- and postknowledge tests showed a significant increase in knowledge was achieved via the workshops, and qualitative surveys indicated a high level of participant satisfaction with the program contents, format, and impact.

Simulation of a Gas Turbine Engine With Performance Degradation Modeling

2011 ◽  
Author(s):  
Ugo Campora ◽  
Mauro Carretta ◽  
Carlo Cravero
Keyword(s):  
Gas Turbine ◽  
Engine Performance ◽  
Gas Turbine Engine ◽  
Performance Degradation ◽  
Matlab Simulink ◽  
Turbine Engine ◽  
Simulink Model ◽  
Blade Thickness ◽  
High Level ◽  
Throat Section

A simulation of performance degradation for an aeronautical gas turbine engine (Honeywell T55 L712) is presented. The effects of turbine (low and high pressure stages) erosion on the engine performance have been investigated in some detail. The behavior of the engine has been simulated using a dynamic model implemented in Matlab-Simulink. Using a throughflow code the LPT and HPT have been simulated and their performance maps have been obtained with a high level of accuracy. In order to understand the effects of turbine erosion nine degradation levels have been introduced and the LPT and HPT performance have been computed using the abovementioned throughflow code. The degradation levels have been based on stator erosion effects (increase of throat section and blade thickness reduction) only according to the experimental evidence from the engine tests from Piaggio Aero Industries. The introduction of the modified turbine characteristics into the Matlab-Simulink model has allowed the degradation effects on the overall engine performance to be tested and discussed. Finally, using experimental data from the industrial maintenance database, the link of each level of degradation with the number of the engine operational time (hours) has been obtained.

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