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Modeling Impacts on Space situational Awareness PHD Filter Tracking

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Computer Modeling in Engineering & Sciences 2016年第2期111卷 171-201页

作者： C.Frueh Purdue University West-LafayetteINUSA.

In recent years,probabilistic tracking methods have been becoming increasingly popular for solving the multi-target tracking problem in Space situational Awareness(SSA).Bayesian frameworks have been used to describe the objects’of interest states and cardinality as point *** inputs of the Bayesian framework filters are a probabilistic description of the scene at hand,the probability of clutter during the observation,the probability of detection of the objects,the probability of object survival and birth rates,and in the state update,the measurement uncertainty and process noise for the ***,in the filter derivation,the assumptions of Poisson distributions of the object prior and the clutter model are *** the first-order moments of the full Bayesian framework leads to a so-called Probability Hypothesis Density(PHD)*** first moment extraction of the PHD filter process is extremely sensitive to both the input parameters and the *** specifics of the SSA problem and its probabilistic description are illustrated in this paper and compared to the assumptions that the PHD filter is based *** an example,this paper shows the response of a Cardinality only PHD filter(only the number of objects is estimated,not their corresponding states)to different input *** very simple Cardinality only PHD filter is chosen in order to clearly show the sole effects of the model mismatch that might be blurred with state estimation effects,such as non-linearity in the dynamical model,in a full PHD filter *** simulated multi-target tracking scenario entails the observation of attitude stable and unstable geostationary objects.

关键词： Space situational Awareness Space Debris Finite set statistics Tracking Modeling

situational Diagnosis of the Social Sphere of Elders Living in Retirement Homes

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Advances in Aging Research 2015年第2期4卷 42-46页

作者： Verónica Benavides Pando Martha Ornelas Contreras Jesús Enrique Peinado Pérez Juan Cristóbal Barrón Luján Lepoldo Refugio López Baca Faculty of Physical Culture Sciences Autonomous University of Chihuahua Chihuahua Mexico

A situational diagnosis of the social sphere of elder permanent residents at retirement homes in Chihuahua City was created with the aid of the Social Resource Scale instrument. From the 51 participants, there were 30 female and 21 male elders. The results and conclusions of the present study highlight two major needs: a systematic assessment of permanent residents in retirement homes and the implementation of a physical activation program. The proposed physical activation program must focus on both, the recovery of motor independence and the increase of socialization activities which allows members of the retired community to improve their daily routine performance and lessens the work load on their caretakers.

关键词： situational Diagnosis Elder Social Sphere

situational Approach for Hotel English Teaching in Vocational Colleges of China

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海外英语 2011年第9X期 140-141,143页

作者：李永秀广西经济管理干部学院广西南宁530007

situational Approach has contributed a lot in the language *** are many strengths to justify the use of situational Approach for hotel English teaching in vocational colleges of *** this article,firstly,it will discuss some backgroup information of the situational ***,it will discuss the definition of situational ***,it will argue why use the situational Approach for hotel English teaching in vocational colleges of ***,it will point out the disadvantages use the situational Approach for hotel English teaching in vocational colleges of ***,it will argue that my modified plan for hotel English teaching in vocational colleges of China.

关键词： situational approach hotel English teaching vocational colleges

Personal, situational and Socio-Cultural Factors as Correlates of Intimate Partner Abuse in Nigeria

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Advances in Sexual Medicine 2013年第4期3卷 92-97页

作者： David Oladeji Department of Family Nutrition and Consumer Sciences Obafemi Awolowo University Ile-Ife Ile-Ife Nigeria

This study established the relationships between personal, situational and socio-cultural factors and intimate partner abuse among couples in Nigeria. A multiple regression statistical procedure was employed in analyzing the data collected from 200 participants randomly selected from five ministries in Ibadan, Oyo state, Nigeria. Results obtained indicated that the three variables when combined effectively predicted intimate partner abuse (F-ratio of 5.756 significant at 0.05 alpha level). Taken separately, situational and socio-cultural factors contributed significantly to the prediction (t = 2.146, p t = 2.284, p (t = 1.705, p > 0.05). On the basis of these findings it was suggested that counselling psychologists should design intervention strategies to promote life-skills training in schools and out-of-schools settings. These include age-appropriate content on sexuality, conflict resolution, building healthy relationships and personal safety. Also, it was suggested that couples should be informed on the long-term health and social consequences of physical and sexual abuse.

关键词： Personal situational Socio-Cultural Partner Abuse Nigeria

The Application of situational Teaching Method in Comprehensive Russian Curriculum

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Journal of Educational Theory and Management 2019年第1期3卷 36-40页

作者： Huiping Zhu Manzhouli College of Inner Mongolia University Manzhouli Hulun Buir Inner Mongolia 021400 China

Economic development and social progress, China’s openness to the outside world is getting higher and higher, and the development of comprehensive Russian curriculum is particularly important. Among them, for the situational teaching method, it is one of the most important teaching methods. Through the application of the situational teaching method, a vivid and vivid learning atmosphere can be created, and the intuitiveness and image of the language scene can be fully reflected, which provides a strong guarantee for the development of Russian curriculum teaching. This paper mainly uses the application of situational teaching method in the comprehensive Russian curriculum, aiming to provide feasible guidance for relevant researchers.

关键词： situational teaching method Russian curriculum Application

On Speaker's Adaptation of Utterance to situational Context

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海外英语 2011年第11X期 220-221页

作者：贺小华 School of Foreign Languages Yan'an University

Each utterance occurs in different situational *** context imposes constraints on communication by providing a common ground for *** to it,speaker is limited to make contextual appropriate utterances according to the ... 详细信息

关键词： speaker utterance situational Context adaptation

My Appreciation of situational Irony in Shakespeare's Tragedies

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海外英语 2010年第1X期 201-203,210页

作者：黄晓亮武汉理工大学华夏学院湖北武汉430223

This thesis carefully appreciated situational irony in some of Shakespeare's tragedies successively,and classified situational irony into four kinds:discrepancy between appearance and reality,expectation and fulfilment,intention and outcome,the actual circumstances and *** the analysis of the first kind of situational irony,especially,the thesis focused on Antony and Cleopatra,together with Julius Caesar,questioned the common idea,and stated that Antony's failure was not because of his passion towards *** was only his screen to cheat the world,an excuse of his " face-saving failure".

关键词： situational Irony Shakespeare’s Tragedies

Research on situational Teaching of Junior Middle English Class from the Perspective of Life-orientation

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海外英语 2014年第11X期 15-16,40页

作者：方金明 School of Foreign Language Jiangsu University

The regression of instruction to life raises as a developmental tendency of course reform among the world. Emphasis on the connection between instruction and students' lives has become an important aspect of curriculum reform. The student learner's role and the development of students' potentials in their lives also have been emphasized; all these conceptions provide broad space for the implementation of life-orientation of instruction. situational teaching emphasizes that students should be regarded as the nucleus of the class. Through acquiring knowledge by themselves, they can bear the knowledge in their mind and improve their communicating ability. The teaching activity should always obey the rule of students centered and teacher aided and make sure that the teaching atmosphere can be kept in an authentic situation. And the most important thing that will be talked about is how to apply situational teaching in Junior Middle English Class.

关键词： Life-orientation English Teaching situational Teac

Evaluation of a concept-based physical education unit for energy balance education

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Journal of Sport and Health Science 2018年第3期7卷 353-362页

作者： Senlin Chen Xihe Zhu Jared Androzzi Yoon Ho Nam department of kinesiology iowa state universityAmesIA 50011USA department of human movement sciences old dominion universityNorfolkVA 23529USA department of health physical educationrecreationand sportshepherd universityShepherdstownWV 25443USA school of sport and exercise science university of northern coloradoGreeleyCO 80639USA school of kinesiology louisiana state universityBaton RougeLA 70803USA.

Background:Physical education(PE)is a key channel that impacts children's decisions and behaviors for healthful *** study evaluated the effects of a concept-based PE(CBPE)instructional unit,featured by energy balance(EB)education,on students'knowledge learning,situational interest,cognitive,and physical engagements as well as teachers'***:Fourth and 5th grade students(n=468)in a mid-western state of the United States were recruited as the *** elementary schools were randomized to the CBPE or control ***'EB knowledge,situational interest,cognitive engagement,and physical engagement were measured by a knowledge test,the situational Interest Scale—Elementary,written task sheets,and accelerometers,respectively,while teachers'perceptions of the CBPE unit were captured by individual interviews at the end of the ***:The CBPE group showed a significant increase in EB knowledge,while the control did *** groups showed a similar increasing trend for situational interest over time,although the statistical results favored the control *** physical engagement,the CBPE group demonstrated a statistically different but substantively similar level of in-class physical activity compared to the control *** CBPE group also showed a moderate level of cognitive engagement throughout the *** PE teachers reported overall positive perceptions about teaching the CBPE ***:These results support the utility of the CBPE unit in enhancing EB education along with facilitating positive student interest and engagement as well as positive teaching experiences.

关键词： Cognitive engagement Constructivist learning theories Curriculum intervention Energy balance knowledge Evaluation Physical engagement situational interest