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Sample records for montessori observer volume

  1. Beginning Conditions. The Montessori Observer. Volume 29, Number 1

    Science.gov (United States)

    International Montessori Society (NJ3), 2008

    2008-01-01

    "The Montessori Observer" is mailed four times each year, in March, May, September and November, to Society members throughout the world. The purpose is to provide news and information about the Society's work in Montessori education, and to extend awareness of Montessori principles throughout the world. This issue contains a feature…

  2. Scientific Education. The Montessori Observer. Volume 29, Number 4

    Science.gov (United States)

    International Montessori Society (NJ3), 2008

    2008-01-01

    "The Montessori Observer" is mailed four times each year, in March, May, September and November, to Society members throughout the world. The purpose is to provide news and information about the Society's work in Montessori education, and to extend awareness of Montessori principles throughout the world. This issue contains a feature article,…

  3. Personality Projections. The Montessori Observer. Volume 32, Number 1

    Science.gov (United States)

    International Montessori Society (NJ3), 2011

    2011-01-01

    "The Montessori Observer" is mailed four times each year, in March, May, September and November, to Society members throughout the world. The purpose is to provide news and information about the Society's work in Montessori education, and to extend awareness of Montessori principles throughout the world. This issue contains a feature…

  4. Perceptual Mistakes. The Montessori Observer. Volume 31, Number 4

    Science.gov (United States)

    International Montessori Society (NJ3), 2010

    2010-01-01

    "The Montessori Observer" is mailed four times each year, in March, May, September and November, to Society members throughout the world. The purpose is to provide news and information about the Society's work in Montessori education, and to extend awareness of Montessori principles throughout the world. This issue contains a feature…

  5. Power Struggles. The Montessori Observer. Volume 31, Number 1

    Science.gov (United States)

    International Montessori Society (NJ3), 2010

    2010-01-01

    "The Montessori Observer" is mailed four times each year, in March, May, September and November, to Society members throughout the world. The purpose is to provide news and information about the Society's work in Montessori education, and to extend awareness of Montessori principles throughout the world. This issue contains a feature…

  6. Nomenclature. The Montessori Observer. Volume 31, Number 3

    Science.gov (United States)

    International Montessori Society (NJ3), 2010

    2010-01-01

    "The Montessori Observer" is mailed four times each year, in March, May, September and November, to Society members throughout the world. The purpose is to provide news and information about the Society's work in Montessori education, and to extend awareness of Montessori principles throughout the world. This issue contains a feature article,…

  7. Distraction. The Montessori Observer. Volume 31, Number 2

    Science.gov (United States)

    International Montessori Society (NJ3), 2010

    2010-01-01

    "The Montessori Observer" is mailed four times each year, in March, May, September and November, to Society members throughout the world. The purpose is to provide news and information about the Society's work in Montessori education, and to extend awareness of Montessori principles throughout the world. This issue contains a feature…

  8. Clear Direction. The Montessori Observer. Volume 32, Number 2

    Science.gov (United States)

    International Montessori Society (NJ3), 2011

    2011-01-01

    "The Montessori Observer" is mailed four times each year, in March, May, September and November, to Society members throughout the world. The purpose is to provide news and information about the Society's work in Montessori education, and to extend awareness of Montessori principles throughout the world. This issue contains a feature…

  9. Context and Content. The Montessori Observer. Volume 30, Number 3

    Science.gov (United States)

    International Montessori Society (NJ3), 2009

    2009-01-01

    "The Montessori Observer" is mailed four times each year, in March, May, September and November, to Society members throughout the world. The purpose is to provide news and information about the Society's work in Montessori education, and to extend awareness of Montessori principles throughout the world. This issue contains a feature…

  10. Home-School Relations. The Montessori Observer. Volume 30, Number 1

    Science.gov (United States)

    International Montessori Society (NJ3), 2009

    2009-01-01

    "The Montessori Observer" is mailed four times each year, in March, May, September and November, to Society members throughout the world. The purpose is to provide news and information about the Society's work in Montessori education, and to extend awareness. This issue contains a feature article, "Home-School Relations," by…

  11. Observation and Development: From Dr. Montessori's 1946 London Training Course

    Science.gov (United States)

    Montessori, Maria

    2016-01-01

    This article exhorts the observer to take notice of the unconscious and conscious levels of the young child's absorbent mind (infant stare). Montessori notes the social awareness of young children and suggests that their amazing awareness of people, not merely their activities, is integral to observation. [Reprinted with permission from "AMI…

  12. Dear Maria Montessori

    Science.gov (United States)

    Greene, Paula K.

    2005-01-01

    Responding to Montessori's work, the author penned this letter, which teachers should find valuable for their own practice and reflection. Sections of the response include: (1) The Key for Me; (2) Observe: Freedom of Choice; (3) Observe: The Method; and (4) And Yet. A "Montessori Timeline" is also included.

  13. Montessori for All: Magnolia Montessori

    Science.gov (United States)

    EDUCAUSE, 2015

    2015-01-01

    The founders of Montessori For All, which opened Magnolia Montessori--a PK-8 public charter school in Austin, Texas--created a new school model that blends the best of authentic Montessori schooling (hands-on and self-directed learning) with best practices from high-performing charter schools (basic skills mastery to excel on standardized tests…

  14. Montessori for All: Magnolia Montessori

    Science.gov (United States)

    EDUCAUSE, 2015

    2015-01-01

    The founders of Montessori For All, which opened Magnolia Montessori--a PK-8 public charter school in Austin, Texas--created a new school model that blends the best of authentic Montessori schooling (hands-on and self-directed learning) with best practices from high-performing charter schools (basic skills mastery to excel on standardized tests…

  15. Best Practices in Montessori Secondary Programs

    Science.gov (United States)

    Donahoe, Marta

    2013-01-01

    This article is the result of years of study, both formal and informal; hundreds of hours of traditional and Montessori classroom observations; reading and digesting articles and books on secondary education, Montessori education, adolescent brain research, leadership, and best practices in education; and most enlightening of all, 20 years of…

  16. Best Practices in Montessori Secondary Programs

    Science.gov (United States)

    Donahoe, Marta

    2013-01-01

    This article is the result of years of study, both formal and informal; hundreds of hours of traditional and Montessori classroom observations; reading and digesting articles and books on secondary education, Montessori education, adolescent brain research, leadership, and best practices in education; and most enlightening of all, 20 years of…

  17. Montessori Grows in Tanzania

    Science.gov (United States)

    Hoke, Betsy

    2014-01-01

    Imagine going back in time and being the guiding spirit in Montessori's first "Casa dei Bambini" but with all the knowledge and skills developed as a Montessori teacher today. That is precisely the privilege this author has had as, over the past 2 years, she has worked to establish an Early Childhood Montessori program in Usa River,…

  18. Montessori Grows in Tanzania

    Science.gov (United States)

    Hoke, Betsy

    2014-01-01

    Imagine going back in time and being the guiding spirit in Montessori's first "Casa dei Bambini" but with all the knowledge and skills developed as a Montessori teacher today. That is precisely the privilege this author has had as, over the past 2 years, she has worked to establish an Early Childhood Montessori program in Usa River,…

  19. Montessori Method and ICTs

    Directory of Open Access Journals (Sweden)

    Athanasios Drigas

    2016-03-01

    Full Text Available This article bridges the gap between the Montessori Method and Information and Communication Technologies (ICTs in contemporary education. It reviews recent research works which recall the Montessori philosophy, principles and didactical tools applying to today’s computers and supporting technologies in children’s learning process. This article reviews how important the stimulation of human senses in the learning process is, as well as the development of Montessori materials using the body and the hand in particular, all according to the Montessori Method along with recent researches over ICTs. Montessori Method within information society age acquires new perspectives, new functionality and new efficacy.

  20. Montessori Head Start Implementation Brief.

    Science.gov (United States)

    Clifford, Alcillia; Kahn, David

    1995-01-01

    Discusses the use of the Montessori method in Head Start programs, focusing on educational environment, teacher training, parent involvement, and funding. Outlines the phased implementation of a Montessori program and provides a list of Montessori publications and organizations. (MDM)

  1. Montessori Method and ICTs

    OpenAIRE

    Athanasios Drigas; Eugenia Gkeka

    2016-01-01

    This article bridges the gap between the Montessori Method and Information and Communication Technologies (ICTs) in contemporary education. It reviews recent research works which recall the Montessori philosophy, principles and didactical tools applying to today’s computers and supporting technologies in children’s learning process. This article reviews how important the stimulation of human senses in the learning process is, as well as the development of Montessori materials using the body a...

  2. Public Knowledge of Montessori Education

    Science.gov (United States)

    Murray, Angela

    2012-01-01

    The American public generally recognizes the name "Montessori" because so many schools across the country and around the world use the Montessori name. However, the Montessori community has long believed that misunderstandings abound. A recent dissertation study quantified Montessori awareness and identified misconceptions in particular for those…

  3. Public Knowledge of Montessori Education

    Science.gov (United States)

    Murray, Angela

    2012-01-01

    The American public generally recognizes the name "Montessori" because so many schools across the country and around the world use the Montessori name. However, the Montessori community has long believed that misunderstandings abound. A recent dissertation study quantified Montessori awareness and identified misconceptions in particular for those…

  4. Judaism and Montessori

    Science.gov (United States)

    Coates, Miriam

    2011-01-01

    Judaism, as a religion and a culture, places a high value on education and scholarly pursuits. As Jewish schools of varying affiliations and denominations look for ways to improve and revive programming, some are exploring the Montessori method. Based on education that follows the child, Montessori focuses on respect, independence, and preparing…

  5. Montessori and School Libraries

    Science.gov (United States)

    Duffy, Michael

    2005-01-01

    This article examines the advantages of using automated media library systems and how to incorporate them in Montessori schools learning environment. Before even addressing the issue of Montessori philosophy and practice, Here, the author first address two principles: availability and accessibility. Availability is the first principle of a…

  6. Judaism and Montessori

    Science.gov (United States)

    Coates, Miriam

    2011-01-01

    Judaism, as a religion and a culture, places a high value on education and scholarly pursuits. As Jewish schools of varying affiliations and denominations look for ways to improve and revive programming, some are exploring the Montessori method. Based on education that follows the child, Montessori focuses on respect, independence, and preparing…

  7. Why Montessori Works

    Science.gov (United States)

    Blount, Beverley

    2007-01-01

    As Montessorians come to the beginning of the second century of the Montessori system of education, they are in agreement that following the principles and guidelines set out by Maria Montessori a century ago empowers them to present to children an environment that truly "works." As the child is very different and the changes very evident between…

  8. Montessori and Constructivism.

    Science.gov (United States)

    Elkind, David

    2003-01-01

    Presents three basic epistemological positions (empiricism, nativism, and constructivism) and argues that Maria Montessori's educational practice reflected all three positions. Describes how the constructivist position is reflected in the High/Scope program, and compares and contrasts this position with that of Montessori. Asserts that although…

  9. Characteristics of Montessori educators in Slovenia

    OpenAIRE

    Uštević, Maja

    2016-01-01

    This diploma thesis presents the Montessori pedagogy with a focus on the characteristics of Montessori educators and Montessori education in Slovenia. It presents the development of the Montessori pedagogy and life of Maria Montessori, related to education and institutions which operate on the principle of Montessori pedagogy worldwide and in Slovenia. It describes the role of the Montessori educator, his/her duties and responsibilities in the process of education according to the Montessori ...

  10. Characteristics of Montessori educators in Slovenia

    OpenAIRE

    Uštević, Maja

    2016-01-01

    This diploma thesis presents the Montessori pedagogy with a focus on the characteristics of Montessori educators and Montessori education in Slovenia. It presents the development of the Montessori pedagogy and life of Maria Montessori, related to education and institutions which operate on the principle of Montessori pedagogy worldwide and in Slovenia. It describes the role of the Montessori educator, his/her duties and responsibilities in the process of education according to the Montessori ...

  11. Developing Resilient Children: After 100 Years of Montessori Education

    Science.gov (United States)

    Drake, Meg

    2008-01-01

    In this millennium, educators are faced with a number of issues that Dr. Maria Montessori could not have predicted. Today, students are different from the children Dr. Montessori observed in her "Casa dei Bambini." They are influenced by technology in all its forms. Some suffer from medical problems such as complex food allergies, which wreak…

  12. Montessori, Superman, and Catwoman.

    Science.gov (United States)

    Simons, Martin

    1988-01-01

    Differences between Montessori theories of instruction and other popular approaches such as Dewey's account for the brevity of her popularity during her lifetime. An analysis of Nietzsche's influence during the development of her theories is described. (CB)

  13. Whay Montessori today?

    OpenAIRE

    Trabalzini, Paola

    2016-01-01

    The article describes some of the reasons why today in Italy, pedagogy and the Montessori method arise interest both in the academic context as well as among families. In the last century, at the beginning of the nineties, in the academic context, there was a more objective research of historiography on the human and intellectual experience of the Italian pedagogue that brought to the overcoming of the reconstruction through anecdotes. Nowadays families choose the Montessori method because th...

  14. Playful Learning and Montessori Education

    National Research Council Canada - National Science Library

    Angeline S Lillard

    2013-01-01

      Although Montessori education is often considered a form of playful learning, Maria Montessori herself spoke negatively about a major component of playful learning-pretend play, or fantasy-for young children...

  15. Montessori All Day, All Year

    Science.gov (United States)

    Black, Connie; Davis, Liza

    2015-01-01

    Introducing real community into the Children's House goes back to the roots of Montessori education through all-day Montessori. The all-day environment is a house where children live with a "developmental room" of Montessori materials including a living room, kitchen, dining area, bedroom, bathroom, greeting rooms, and outdoor spaces.…

  16. Playful Learning and Montessori Education

    Science.gov (United States)

    Lillard, Angeline S.

    2013-01-01

    Although Montessori education is often considered a form of playful learning, Maria Montessori herself spoke negatively about a major component of playful learning--pretend play, or fantasy--for young children. In this essay, the author discusses this apparent contradiction: how and why Montessori education includes elements of playful learning…

  17. Authentic Montessori: The Teacher Makes the Difference

    Science.gov (United States)

    Huxel, Alexa C.

    2013-01-01

    What are the elements that make up authentic Montessori? Is Montessori something concrete or abstract? Are there intangibles that make Montessori what it is? Many classrooms today have Montessori materials and small tables and chairs. Are they authentic Montessori? When examining areas that traditionally make defining authentic Montessori…

  18. Authentic Montessori: The Teacher Makes the Difference

    Science.gov (United States)

    Huxel, Alexa C.

    2013-01-01

    What are the elements that make up authentic Montessori? Is Montessori something concrete or abstract? Are there intangibles that make Montessori what it is? Many classrooms today have Montessori materials and small tables and chairs. Are they authentic Montessori? When examining areas that traditionally make defining authentic Montessori…

  19. Primerjava montessori in waldorfske pedagogike

    OpenAIRE

    Čufar, Anja

    2016-01-01

    Diplomsko delo Primerjava montessori in waldorfske pedagogike je sestavljeno iz teoretičnega in empiričnega dela. Teoretičen del vsebuje opis značilnosti montessori in waldorfske pedagogike. V njem sta omenjena Maria Montessori, začetnica pedagogike montessori, in Rudolf Steiner, začetnik waldorfske pedagogike. Tu najdemo podatke, kdaj sta se pedagogiki pojavili v svetu in kdaj v Sloveniji. V tem delu sem izpostavila kriterije, s katerimi sem primerjala montessori pedagogiko in waldorfsko ...

  20. Montessori Special Education and Nature's Playground

    Science.gov (United States)

    Vaz, Nimal

    2013-01-01

    Nimal Vaz takes us to the essentials of Montessori as an aid to life for all children, particularly children with special needs. She challenges teachers to truly provide experiences in nature: observing anthills, identifying bird nests, or taking an olfactory walk with a legally blind classmate. Finally, she demonstrates how a child's interest in…

  1. The Montessori Method

    Directory of Open Access Journals (Sweden)

    Cathleen Haskins

    2010-06-01

    Full Text Available Dr. Maria Montessori provided the world with a powerful philosophy and practice for the advancement of humanity: change how we educate children and we change the world. She understood two things very clearly: One, that we can build a better world, a more just and peaceful place, when we educate for the realization of the individual and collective human potential; and two, that the only way to create an educational system that will that will serve this end is to scrap the current system entirely and replace it with a completely new system. She gave us a system through which to accomplish that goal: The Montessori Method. The following is a personal and professional account of the Montessori Method of educating children.

  2. Origins of Montessori Programming for Dementia.

    Science.gov (United States)

    Camp, Cameron J

    2010-01-01

    The focus of this article is on the evolution of the use of Montessori educational methods as the basis for creating interventions for persons with dementia. The account of this evolution is autobiographical, as the development of Montessori Programming for Dementia (MPD) initially was through the efforts of myself and my research associates. My initial exposure to Maria Montessori's work came as a result of my involvement with my own children's education. This exposure influenced ongoing research on development of cognitive interventions for persons with dementia. A brief description of Montessori's work with children and the educational methods she developed is followed by a description of how this approach can be translated into development of activities for persons with dementia. Assessment tools to document effects of MPD were created, focusing on observational tools to measure engagement and affect during individual and group activities programming for persons with dementia. Examples of the use of MPD by researchers, staff members, and family members are given, as well as examples of how persons with dementia can provide MPD to other persons with dementia or to children. Finally, examples of MPD's dissemination internationally and future directions for research are presented.

  3. A Montessori Odyssey

    Science.gov (United States)

    Hanson, Peter

    2013-01-01

    Forty years ago, Peter Hanson decided to attend the 38th Indian Montessori Training Course. In this article he describes himself as a college-educated generalist who liked kids but was working for little more than minimum wage as a delivery boy. Becoming a teacher in an alternative school seemed like a good move, and a step up without…

  4. Effect of different methods of teaching on children concepts about living and non-living in a public kindergarden and montessori kindergarden

    OpenAIRE

    Vene, Katarina

    2016-01-01

    In this thesis, we wanted to compare methods of teaching preschool children in traditional public institutions and kindergartens working under the program of Maria Montessori. The Montessori educational method is based on observations and discoveries by Dr. Maria Montessori. With the Montessori educational approach we want children to have the best possible conditions for personal development while respecting their dignity, freedom and rights (The Universal Declaration of Human Rights, Articl...

  5. Science in montessori kindergarten

    OpenAIRE

    Petač, Urška

    2016-01-01

    The first part of the thesis Science in Montessori kindergarten describes the Curriculum for kindergarten, national document, based on which teachers plan their educational work in kindergarten. It contains presentation of some global aims of primary science, and also descriptions of proposed activities for this area. It includes presentation of a constructivist way of teaching, which helps children to see nature as a place, where they can freely explore on their own initiative. Simultaneousl...

  6. Značilnosti pedagogov montessori v Sloveniji

    OpenAIRE

    Uštević, Maja

    2016-01-01

    V diplomskem delu je predstavljena pedagogika montessori, s poudarkom na značilnostih pedagogov montessori in izobraževanjih montessori v Sloveniji. Predstavljen je razvoj pedagogike montessori in življenje Marie Montessori, povezano z vzgojo in izobraževanjem ter razvoj ustanov, ki delujejo po principu pedagogike montessori, po svetu in v Sloveniji. Opisana je vloga pedagoga montessori ter njegove obveznosti in dolžnosti v procesu vzgoje in izobraževanja po metodi pedagogike montessori. Pred...

  7. Značilnosti pedagogov montessori v Sloveniji

    OpenAIRE

    Uštević, Maja

    2016-01-01

    V diplomskem delu je predstavljena pedagogika montessori, s poudarkom na značilnostih pedagogov montessori in izobraževanjih montessori v Sloveniji. Predstavljen je razvoj pedagogike montessori in življenje Marie Montessori, povezano z vzgojo in izobraževanjem ter razvoj ustanov, ki delujejo po principu pedagogike montessori, po svetu in v Sloveniji. Opisana je vloga pedagoga montessori ter njegove obveznosti in dolžnosti v procesu vzgoje in izobraževanja po metodi pedagogike montessori. Pred...

  8. The Kodaikanal Experience: Chapter II. Kahn-Montessori Interview

    Science.gov (United States)

    NAMTA Journal, 2013

    2013-01-01

    This article provides an interview transcript between David Kahn and Mario Montessori (1898-1982), son of Dr. Maria Montessori. Mario Montessori dedicated his life to the preservation, dissemination and application of Montessori's works. Herein Kahn asks Montessori about his time living in the hills of Kodaikanal, India. Montessori touches upon…

  9. Makarenko, Montessori, Korczak

    OpenAIRE

    Busch, Friedrich W.

    2008-01-01

    Veröffentlichung eines Vortrages von Friedrich W. Busch im Rahmen eines Festkolloquiums für seine Kollegin Prof. Dr. Maria Fölling-Albers. Beide verbindet der Einsatz für eine inhaltliche Reform pädagogischer Studiengänge. Für seinen Vortrag wählt Busch Persönlichkeiten aus, die als herausragende Pädagogen (Makarenk, Montessori, Korczak) das pädagogische Denken und Handeln des 20. Jahrhunderts maßgeblich beeinflußt haben.

  10. The Montessori Method

    OpenAIRE

    Cathleen Haskins

    2010-01-01

    Dr. Maria Montessori provided the world with a powerful philosophy and practice for the advancement of humanity: change how we educate children and we change the world. She understood two things very clearly: One, that we can build a better world, a more just and peaceful place, when we educate for the realization of the individual and collective human potential; and two, that the only way to create an educational system that will that will serve this end is to scrap the current system entire...

  11. Work in Society and in Montessori Classrooms

    Science.gov (United States)

    Chattin-McNichols, John

    2013-01-01

    Montessori educators follow Montessori's lead and use the word "work" to describe the child's concentrated attention with a hands-on material. But this word may lead to communication problems with parents and those in the non-Montessori world: educators, administrators, accreditors, and so on. These communication problems are…

  12. Work in Society and in Montessori Classrooms

    Science.gov (United States)

    Chattin-McNichols, John

    2013-01-01

    Montessori educators follow Montessori's lead and use the word "work" to describe the child's concentrated attention with a hands-on material. But this word may lead to communication problems with parents and those in the non-Montessori world: educators, administrators, accreditors, and so on. These communication problems are…

  13. Maria Montessori: Portrait of a Young Woman

    Science.gov (United States)

    Povell, Phyllis

    2007-01-01

    In this article, the author presents the biography of Maria Montessori, who pioneered early childhood education and introduced a new method of pedagogy. The innovations in education that Montessori introduced were enough to reserve a place for her in the history books. Montessori was ahead of her time in many aspects of her life. The decisions…

  14. Women in History--Maria Montessori

    Science.gov (United States)

    Zierdt, Ginger L.

    2007-01-01

    This article profiles Maria Montessori, an international ambassador for children who became known for her theories and methods of pedagogy, called the "Montessori Method." Montessori developed an educational theory, which combined ideas of scholar Froebel, anthropologists Giuseooe Serge, French physicians Jean Itard and Edouard Sequin,…

  15. Music and Montessori: An Interview with Erica Roach

    Science.gov (United States)

    Montessori Life: A Publication of the American Montessori Society, 2005

    2005-01-01

    This article presents an interview with Erica Roach, a former Montessori student and a musician, who shares her story about how her Montessori experiences shaped her life. Roach grew up in San Francisco and attended two different Montessori schools: Big City Montessori, for kindergarten, and San Francisco Montessori School (now called The San…

  16. Imaginary Play in Montessori Classrooms: Considerations for a Position Statement

    Science.gov (United States)

    Soundy, Cathleen S.

    2012-01-01

    Imaginary play activities are not only enjoyable in their own right, but also offer clear intellectual, social, and emotional benefits to children who participate in them. This article describes the nature of imaginary play as observed in some Montessori classrooms and lays the groundwork for developing a position statement on imaginary play for…

  17. Montessori-based dementia care.

    Science.gov (United States)

    Cline, Janet

    2006-10-01

    Montessori-based Dementia Care is an approach used in Alzheimer's care that does not involve chemical or physical restraints. This program works by giving the elder with Alzheimer/Dementia a purpose by getting them involved. When staff/families care for a confused Alzheimer/Dementia patient, who is having behaviors, the Montessori program teaches them to look at what is causing the behavior. When assessing the elder to determine what is causing the behavior, the goal is to find the answer, but the answer cannot be dementia. The goal of the program is to bring meaning to the life of an Alzheimer/Dementia elder.

  18. Montessori and Non-Montessori Early Childhood Teachers’ Attitudes Towards Inclusion and Access

    Directory of Open Access Journals (Sweden)

    Natalie Danner

    2015-11-01

    Full Text Available Montessori and non-Montessori general education early childhood teachers were surveyed about their attitudes towards including children with disabilities and providing access in their classrooms.  Both groups reported similar and positive supports for inclusion within their schools. Montessori teachers reported having less knowledge about inclusion and less special education professional development than their non-Montessori counterparts.   Implications for professional development and teacher preparation are described.

  19. Cobb Montessori: A Community Crisis Illuminating the Challenges and Opportunities of Public Montessori

    Science.gov (United States)

    Benham, Christine

    2010-01-01

    One of the goals of Montessorians is to spread Montessori education and make quality Montessori education available for children. However, one of the obstacles is the lack of information in the world (and an abundance of misinformation) about the Montessori philosophy. In 2009, these two issues came to a head in what evolved into a battle of…

  20. Views on Montessori Approach by Teachers Serving at Schools Applying the Montessori Approach

    Science.gov (United States)

    Atli, Sibel; Korkmaz, A. Merve; Tastepe, Taskin; Koksal Akyol, Aysel

    2016-01-01

    Problem Statement: Further studies on Montessori teachers are required on the grounds that the Montessori approach, which, having been applied throughout the world, holds an important place in the alternative education field. Yet it is novel for Turkey, and there are only a limited number of studies on Montessori teachers in Turkey. Purpose of…

  1. Preschool Children's Development in Classic Montessori, Supplemented Montessori, and Conventional Programs

    Science.gov (United States)

    Lillard, Angeline S.

    2012-01-01

    Research on the outcomes of Montessori education is scarce and results are inconsistent. One possible reason for the inconsistency is variations in Montessori implementation fidelity. To test whether outcomes vary according to implementation fidelity, we examined preschool children enrolled in high fidelity classic Montessori programs, lower…

  2. Preschool Children's Development in Classic Montessori, Supplemented Montessori, and Conventional Programs

    Science.gov (United States)

    Lillard, Angeline S.

    2012-01-01

    Research on the outcomes of Montessori education is scarce and results are inconsistent. One possible reason for the inconsistency is variations in Montessori implementation fidelity. To test whether outcomes vary according to implementation fidelity, we examined preschool children enrolled in high fidelity classic Montessori programs, lower…

  3. Joy in the Montessori Classroom

    Science.gov (United States)

    Ulrich, Tamara D.

    2014-01-01

    In this article, the author states that it is a delight to walk into a Montessori classroom to the hum of children engaged in a variety of activities, especially when there is an accompanying feeling of joy and happiness. In desiring the peaceful calm of the classroom, educators may inadvertently hinder the joy, enthusiasm, and imagination that…

  4. The American Montessori Society, Inc.

    Science.gov (United States)

    Donahue, Gilbert E.

    2010-01-01

    This article offers a brief history of the establishment of the American Montessori Society (AMS) and takes a closer look at its structure. The history of AMS has essentially been a search for standards and a search for community in its efforts to further the welfare of children in America. It has been an indigenous effort by American parents, and…

  5. Developing creativity in Montessori preschool class

    OpenAIRE

    KYSELOVÁ, Soňa

    2011-01-01

    The aim of this work is to point out the possibilities of developing creativity in a preschool classroom, which works by the philosophy of Montessori pedagogy that is sometimes critisised as too strict and not offering enough space for creativity and fantasy. The theoretical part will content characterisation of creativity and pedagogy of Maria Montessori, concept of creativity as perceived by Maria Montessori, art exploitation for developing creativity and it´s assertion in Montesori classro...

  6. The Scientist in the Classroom: The Montessori Teacher as Scientist

    Science.gov (United States)

    Sackett, Ginni

    2016-01-01

    Ginni Sackett shares insights ignited by a presentation given by Professori Raniero Regni in Rome at an AMI International Trainers Meeting. Dr. Regni stated that, "To go beyond Montessori is to rediscover Montessori. Montessori is waiting for us in the future." By re-examining Montessori's writings, Sackett traces the subtle ways in…

  7. Montessori Parenting: An Idea Whose Time Has Come

    Science.gov (United States)

    McFarland, Sonnie; McFarland, Jim

    2013-01-01

    Since Dr. Maria Montessori's discovery of the true nature of childhood over a century ago, children around the globe have benefited from Montessori education. However, even parents who have children enrolled in Montessori schools could derive further benefits through the implementation of Montessori principles and practices in the home. Helping…

  8. The effects of Montessori education: evidence from admission lotteries

    NARCIS (Netherlands)

    Ruijs, N.

    2014-01-01

    Little is known about the effects of Montessori education, even though many students in many countries are educated in Montessori classrooms. This study investigates the causal effects of Montessori secondary education by exploiting admission lotteries in Dutch Montessori schools. The results

  9. The effects of Montessori education: evidence from admission lotteries

    NARCIS (Netherlands)

    Ruijs, N.

    2014-01-01

    Little is known about the effects of Montessori education, even though many students in many countries are educated in Montessori classrooms. This study investigates the causal effects of Montessori secondary education by exploiting admission lotteries in Dutch Montessori schools. The results indica

  10. Montessori Parenting: An Idea Whose Time Has Come

    Science.gov (United States)

    McFarland, Sonnie; McFarland, Jim

    2013-01-01

    Since Dr. Maria Montessori's discovery of the true nature of childhood over a century ago, children around the globe have benefited from Montessori education. However, even parents who have children enrolled in Montessori schools could derive further benefits through the implementation of Montessori principles and practices in the home. Helping…

  11. Montessori, Maslow, and Self-Actualization

    Science.gov (United States)

    Weinberg, David R.

    2011-01-01

    What must never be forgotten by the Montessori teacher, or by any teacher of young children, is that his or her "primary" task, his or her "primary" obligation, his or her "primary" sacred duty is not the teaching of the "three Rs" but that of nurturing the psychological health of the child. Every element of Montessori methodology is designed for…

  12. Montessori and Gardner's Theory of Multiple Intelligences.

    Science.gov (United States)

    Vardin, Patricia A.

    2003-01-01

    Reviews Gardner's theory of multiple intelligences. Shows how Maria Montessori and Howard Gardner drew similar conclusions regarding human capacity and potential. Examines how Gardner's eight intelligences and underlying core operations lie at the heart of the Montessori exercises and activities. (KB)

  13. Revisiting the Montessori Elementary Biology Sequence.

    Science.gov (United States)

    Scott, Judy; Lanaro, Pamela

    1994-01-01

    Suggests a revised Montessori elementary biology sequence based on the new five-kingdom model. In keeping with Montessori principles that move the learner from the whole to the parts and from the simple to the complex, offers a proposed outline of instruction for the lower elementary (6-9) level and for the upper elementary (9-12) level. (TJQ)

  14. Creating an Amazing Montessori Toddler Home Environment

    Science.gov (United States)

    Woo, Stephanie

    2014-01-01

    The author states that raising her twins the Montessori way has made her life easy. Imagine two 1-year-olds eating entire meals on their own, setting their own tables by 20 months, and becoming potty-trained before 2. These are not statistics found in just one household. Children raised the Montessori way can take care of themselves and their…

  15. Montessori Practices: Options for a Digital Age

    Science.gov (United States)

    Powell, Mark

    2016-01-01

    Mark Powell's plea for an open-minded view on the full scope of technology that is compatible with Montessori education enriches Maria Montessori's clear modernism of welcoming science into her educational vision. Growing up digital can be intelligently managed so that "technology may offer an effective, adaptable, and easily available means…

  16. Montessori, Maslow, and Self-Actualization

    Science.gov (United States)

    Weinberg, David R.

    2011-01-01

    What must never be forgotten by the Montessori teacher, or by any teacher of young children, is that his or her "primary" task, his or her "primary" obligation, his or her "primary" sacred duty is not the teaching of the "three Rs" but that of nurturing the psychological health of the child. Every element of Montessori methodology is designed for…

  17. Creating an Amazing Montessori Toddler Home Environment

    Science.gov (United States)

    Woo, Stephanie

    2014-01-01

    The author states that raising her twins the Montessori way has made her life easy. Imagine two 1-year-olds eating entire meals on their own, setting their own tables by 20 months, and becoming potty-trained before 2. These are not statistics found in just one household. Children raised the Montessori way can take care of themselves and their…

  18. Public Montessori Elementary Schools: A Delicate Balance

    Science.gov (United States)

    Murray, Angela; Peyton, Vicki

    2008-01-01

    Public Montessori elementary schools have two challenges: They strive to achieve a child-centered Montessori environment and must also address the demands of state and federal requirements developed for more traditional educational settings. This study analyzes how schools were operating on both fronts. On the one hand, the study measured the…

  19. A Clear Voice for Montessori: Elisabeth Caspari

    Science.gov (United States)

    Lombard, Marjorie Ann

    2009-01-01

    In this article, the author profiles Dr. Elisabeth Caspari (1899-2002). As a teacher of teachers, Caspari traveled extensively for 50 years, sharing the wisdom she had gleaned from her training under Dr. Maria Montessori in Adyar, India, and from 4 years of frequent association with Montessori and her son, Mario, in Kodaikanal. The threads of…

  20. The Montessori Paradigm of Learning: So What?

    Science.gov (United States)

    Faryadi, Qais

    2007-01-01

    This critical literature examines the methodology of teaching and learning developed by Dr. Maria Montessori. Maria Montessori always believed that children are a unique being and they always surprise us with their unseen capabilities. In order to fully develop those unseen capabilities, we must give them freedom of choice to explore their…

  1. Montessori and Gardner's Theory of Multiple Intelligences.

    Science.gov (United States)

    Vardin, Patricia A.

    2003-01-01

    Reviews Gardner's theory of multiple intelligences. Shows how Maria Montessori and Howard Gardner drew similar conclusions regarding human capacity and potential. Examines how Gardner's eight intelligences and underlying core operations lie at the heart of the Montessori exercises and activities. (KB)

  2. Montessori-based activities for long-term care residents with advanced dementia: effects on engagement and affect.

    Science.gov (United States)

    Orsulic-Jeras, S; Judge, K S; Camp, C J

    2000-02-01

    Sixteen residents in long-term care with advanced dementia (14 women; average age = 88) showed significantly more constructive engagement (defined as motor or verbal behaviors in response to an activity), less passive engagement (defined as passively observing an activity), and more pleasure while participating in Montessori-based programming than in regularly scheduled activities programming. Principles of Montessori-based programming, along with examples of such programming, are presented. Implications of the study and methods for expanding the use of Montessori-based dementia programming are discussed.

  3. Science and culture around the Montessori's first "Children's Houses" in Rome (1907-1915).

    Science.gov (United States)

    Foschi, Renato

    2008-01-01

    Between 1907 and 1908, Maria Montessori's (1870-1952) educational method was elaborated at the Children's Houses of the San Lorenzo district in Rome. This pioneering experience was the basis for the international fame that came to Montessori after the publication of her 1909 volume dedicated to her "Method." The "Montessori Method" was considered by some to be scientific, liberal, and revolutionary. The present article focuses upon the complex contexts of the method's elaboration. It shows how the Children's Houses developed in relation to a particular scientific and cultural eclecticism. It describes the factors that both favored and hindered the method's elaboration, by paying attention to the complex network of social, institutional, and scientific relationships revolving around the figure of Maria Montessori. A number of "contradictory" dimensions of Montessori's experience are also examined with a view to helping to revise her myth and offering the image of a scholar who was a real early-twentieth-century prototype of a "multiple" behavioral scientist. Copyright 2008 Wiley Periodicals, Inc.

  4. The Montessori Method: The Origins of an Educational Innovation: Including an Abridged and Annotated Edition of Maria Montessori's The Montessori Method

    Science.gov (United States)

    Gutek, Gerald Lee

    2004-01-01

    An essential resource for all students and scholars of early childhood education, this book offers a rich array of material about Maria Montessori and the Montessori Method. Distinguished education scholar Gerald Gutek begins with an in-depth biography of Montessori, exploring how a determined young woman overcame the obstacles that blocked her…

  5. Star Power: Connecting Montessori and Technology.

    Science.gov (United States)

    Milton, Sheri

    1999-01-01

    Presents a lesson developed for a Montessori Elementary Level II class using the Turtle Math program. Students used mathematics, geometry, and logical thinking to identify the basic formula for drawing stars with any desired number of points. (KB)

  6. Maria Montessori and Howard Gardner : Educational development in different cultures

    OpenAIRE

    甲斐, 仁子; KIMIKO, KAI; Fuji Women's University Faculty of Human Life Science, Department of Early Childhood Care and Education

    2007-01-01

    Maria Montessori (1870-1952) proposed her own type of educational program, which she called "scientific pedagogy" because of its distinctive features. Since her first experiment at the "Children's House" in 1907 in Italy, Montessori education has been practiced for almost a century in a variety of cultures. This paper will examine the characteristics of Montessori education in the light of current research. In addition to describing the academic basis of Montessori education, the paper also c...

  7. Our Young Cultural Ambassadors: Montessori Peacemakers for a Modern World

    Science.gov (United States)

    Carver-Akers, Kateri; Markatos-Soriano, Kristine

    2007-01-01

    This article describes the Language Center Montessori School in Chapel Hill, North Carolina, where students are learning in a language-immersion Montessori environment. The school offers a choice to parents--Spanish immersion or French immersion--but Montessori comes with both. The school's motivation for promoting bilingualism is to improve…

  8. The Learning Tree Montessori Child Care: An Approach to Diversity

    Science.gov (United States)

    Wick, Laurie

    2006-01-01

    In this article the author describes how she and her partners started The Learning Tree Montessori Child Care, a Montessori program with a different approach in Seattle in 1979. The author also relates that the other area Montessori schools then offered half-day programs, and as a result the children who attended were, for the most part,…

  9. [Montessori method applied to dementia - literature review].

    Science.gov (United States)

    Brandão, Daniela Filipa Soares; Martín, José Ignacio

    2012-06-01

    The Montessori method was initially applied to children, but now it has also been applied to people with dementia. The purpose of this study is to systematically review the research on the effectiveness of this method using Medical Literature Analysis and Retrieval System Online (Medline) with the keywords dementia and Montessori method. We selected lo studies, in which there were significant improvements in participation and constructive engagement, and reduction of negative affects and passive engagement. Nevertheless, systematic reviews about this non-pharmacological intervention in dementia rate this method as weak in terms of effectiveness. This apparent discrepancy can be explained because the Montessori method may have, in fact, a small influence on dimensions such as behavioral problems, or because there is no research about this method with high levels of control, such as the presence of several control groups or a double-blind study.

  10. Il periodo indiano di Maria Montessori

    Directory of Open Access Journals (Sweden)

    Giacomo Cives

    2011-11-01

    Full Text Available On Maria Montessori (1870-1952, Italian educator of the twentieth century the most successful in the world, there is, also a growing if belated, interest in more recent times also in Italy. So to confine ourselves to two thousand years, studies have appeared on his life and works of great interest, finally showing that its value is recognized beyond resistance of the idealistic and Catholic area survived for a long time. The author investigates these new frontiers of research on the Montessori starting from a new biography dedicated to her which gives attention also to the Indian period.

  11. Methods Evolved by Observation

    Science.gov (United States)

    Montessori, Maria

    2016-01-01

    Montessori's idea of the child's nature and the teacher's perceptiveness begins with amazing simplicity, and when she speaks of "methods evolved," she is unveiling a methodological system for observation. She begins with the early childhood explosion into writing, which is a familiar child phenomenon that Montessori has written about…

  12. Using the Montessori approach for a clientele with cognitive impairments: a quasi-experimental study design.

    Science.gov (United States)

    Giroux, Dominique; Robichaud, Line; Paradis, Martin

    2010-01-01

    The choice of activities responding to the needs of people with moderate to severe dementia is a growing concern for care providers trying to target the need for a feeling of self-accomplishment by adapting activities to the abilities of elderly patients. The activities created by Maria Montessori seem to be adaptable to this clientele. This study evaluates the short-term effects, as compared to regular activities offered in the milieu. This is a quasi-experimental study where each of the 14 participants was observed and filmed in two conditions: during Montessori activities, during regular activities, and one control condition (no activity). The results show that Montessori activities have a significant effect on affect and on participation in the activity. They support the hypothesis that when activities correspond to the needs and abilities of a person with dementia, these positive effects are also observed on behaviours. This study enabled its authors to corroborate the findings presented in the literature and to contribute additional elements on the positive effects of the use of Montessori activities and philosophy. Used with people with moderate to severe dementia these allow the satisfaction of their basic psychological needs, their well being, and hence, on their quality of life.

  13. Longitudinal Comparison of Montessori versus Non-Montessori Students’ Place-Value and Arithmetic Knowledge

    Directory of Open Access Journals (Sweden)

    Elida V. Laski

    2016-05-01

    Full Text Available Base-10 and place value understanding are important foundational math concepts that are associated with higher use of decomposition strategies and higher accuracy on addition problems (Laski, Ermakova, & Vasilyeva, 2014; Fuson, 1990; Fuson & Briars, 1990; National Research Council, 2001. The current study examined base-10 knowledge, place value, and arithmetic accuracy and strategy use for children in early elementary school from Montessori and non-Montessori schools. Children (N = 150 were initially tested in either kindergarten or first grade. We followed up with a subgroup of the sample (N = 53 two years later when the children were in 2nd and 3rd grade. Although Montessori curriculum puts a large emphasis on the base-10 structure of number, we found that children from Montessori schools only showed an advantage on correct use of base-10 canonical representation in kindergarten but not in first grade. Moreover, there were no program differences in place value understanding in 2nd and 3rd grade. Although Montessori children used different strategies to obtain answers to addition problems in 2nd and 3rd grade as compared with non-Montessori children, there were no program differences in addition accuracy at any grade level. Educational implications are discussed.

  14. Building Ukrainian Montessori from the Ground up

    Science.gov (United States)

    Cusack, Ginny

    2008-01-01

    Ukraine had been under Soviet domination for 75 years. Its institutions, including its educational system, were guided by rules established in Moscow. When the Soviet Union dissolved in 1991, the country had opportunities to reinvent itself. In this article, the author discusses the Ukrainian Montessori Project, a successful partnership between…

  15. Montessori Elementary Philosophy Reflects Current Motivation Theories

    Science.gov (United States)

    Murray, Angela

    2011-01-01

    Montessori's theories, developed more than 100 years ago, certainly resonate with current psychological research on improving education. Autonomy, interest, competence, and relatedness form the foundation for three contemporary efforts to organize the vast literature on motivation into a parsimonious theory. These four elements also comprise…

  16. Why Montessori? Answers from a Parent's Perspective

    Science.gov (United States)

    Karna, Anu

    2013-01-01

    The author knew she would be picky about where her child started his schooling. After calling over 30 public and private schools within a 50-mile radius of her home, and then visiting more than 15 of them, the author chose Lexington Montessori School (LMS). However, when she tells friends and acquaintances about her son's fantastic school, she…

  17. [Cognitive disorders and the Montessori method].

    Science.gov (United States)

    Lembach, Marie; Agret, Annie; Rochat, Armelle; Thomas, Stéphanie; Jeandel, Claude

    2017-01-01

    Trained in the Montessori method, a team takes a very positive approach to their patients. The nurses base their practice on patients' remaining capacities, helping them work around their impairments. They seek to offer each person the possibility to pursue a social life through individualised treatments. Copyright © 2016 Elsevier Masson SAS. All rights reserved.

  18. Montessori Elementary Philosophy Reflects Current Motivation Theories

    Science.gov (United States)

    Murray, Angela

    2011-01-01

    Montessori's theories, developed more than 100 years ago, certainly resonate with current psychological research on improving education. Autonomy, interest, competence, and relatedness form the foundation for three contemporary efforts to organize the vast literature on motivation into a parsimonious theory. These four elements also comprise…

  19. Reflections on the Internationality of Montessori Education

    Science.gov (United States)

    Brunold-Conesa, Cynthia

    2008-01-01

    One of the major components of Dr. Montessori's plan for peace education is a curriculum that de-emphasizes nationalism. The "big picture" of the cultural curriculum encourages the perspective that people are citizens of Earth first, and only secondarily American, Japanese, Polish, or other nationalities. Through the fundamental needs…

  20. Why Montessori? Answers from a Parent's Perspective

    Science.gov (United States)

    Karna, Anu

    2013-01-01

    The author knew she would be picky about where her child started his schooling. After calling over 30 public and private schools within a 50-mile radius of her home, and then visiting more than 15 of them, the author chose Lexington Montessori School (LMS). However, when she tells friends and acquaintances about her son's fantastic school, she…

  1. Children's Memories of Their Montessori Experience

    Science.gov (United States)

    Tatsch, Joyce

    2011-01-01

    This article discusses the results of a survey conducted at the Princeton Montessori School (PMS) in New Jersey, a school serving age levels from infants through middle school. The author designed a series of five to six questions about memories of activities, teachers, and friends for all current K-8 students with a minimum of 1 year of…

  2. Reading Workshop in the Montessori Classroom

    Science.gov (United States)

    Cockerille, Anna Gratz

    2014-01-01

    During the 2012-2013 school year, Metropolitan Montessori School, on Manhattan's Upper West Side, a school for 3-to-12-year-olds, adopted a reading workshop approach. This decision resulted from several recognized needs. One need was to provide teachers with a strong, clear framework for literacy instruction, particularly at the emergent reading…

  3. Recollections and Reflections: The American Montessori Society

    Science.gov (United States)

    Gravel, Douglas

    2010-01-01

    In this article, the author shares some of his recollections around the birth of the American Montessori Society (AMS), beginning in the 1950s. He explains the way AMS evolved in its earliest days which reveals something of who its members are now and how they have been part of the 50-year journey. He adds that by recounting the past, members of…

  4. Maria Montessori and Educational Forces in America

    Science.gov (United States)

    Shortridge, P. Donohue

    2007-01-01

    When Maria Montessori addressed two wildly enthusiastic American audiences at Carnegie Hall in December 1913, she thrilled the parents in attendance, but sent a shock wave through the educational establishment. Instead of accommodating skeptics from the teacher-training institutions seated there that night, she appealed directly to parents who…

  5. Autorská kniha inspirovaná pedagogikou Marie Montessori

    OpenAIRE

    PAVLOVCOVÁ, Helena

    2014-01-01

    Helena Pavlovcová, bachelor thesis The authorial book inspired by the Maria Montessori pedagogy. The theoretical part of the bachelor thesis is based on the knowledge of Maria Montessori and looks into the basis of her pedagogy, principles and thoughts in approach to the education of children. The practical part concerns the thoughts of Maria Montessori and serves for the purpose of creation the authorial book.

  6. Montessori Education and Practice: A Review of the Literature, 2007-2009

    Science.gov (United States)

    Bagby, Janet H.; Jones, Natalie A.

    2010-01-01

    This literature review, a continuation of the first one published in "Montessori Life" (Bagby, 2007), identifies articles published in non-Montessori professional periodicals that included information about Maria Montessori and/or the Montessori method of education. While conducting the current search, the authors discovered 12 articles published…

  7. What Belongs in a Montessori Primary Classroom? Results from a Survey of AMI and AMS Teacher Trainers

    Science.gov (United States)

    Lillard, Angeline S.

    2011-01-01

    There are two major types of Montessori teacher education in the United States: (1) AMI-USA (the American branch of the Association Montessori Internationale, founded by Dr. Montessori to carry on her work); and (2) AMS (American Montessori Society, founded by Nancy Rambusch to represent Montessori in America). This article presents the results…

  8. What Belongs in a Montessori Primary Classroom? Results from a Survey of AMI and AMS Teacher Trainers

    Science.gov (United States)

    Lillard, Angeline S.

    2011-01-01

    There are two major types of Montessori teacher education in the United States: (1) AMI-USA (the American branch of the Association Montessori Internationale, founded by Dr. Montessori to carry on her work); and (2) AMS (American Montessori Society, founded by Nancy Rambusch to represent Montessori in America). This article presents the results…

  9. Maria Montessori, John Dewey, and William H. Kilpatrick

    Science.gov (United States)

    Thayer-Bacon, Barbara

    2012-01-01

    I explore Montessori's story in terms of her initial warm reception by America to her educational research, and her later cooling off, once Dewey's student, Kilpatrick, published The Montessori System Examined and declared her work to be based on psychological theory that was fifty years behind the times. I argue that there is a troubling gendered…

  10. Leaving a Legacy: Passing Montessori to the Next Generation

    Science.gov (United States)

    Loveless, Sylvia

    2012-01-01

    For each of the past 19 years, the American Montessori Society has chosen to recognize one Montessorian as an AMS Living Legacy. Recipients are honored at the AMS annual conference for their salient work or volunteerism in the Montessori field and their dedication and leadership that has made an impact on the AMS community. It seems fitting that…

  11. Further Fostering Intrinsic Motivation in the Montessori Elementary Classroom

    Science.gov (United States)

    Fitch, Victoria A.

    2013-01-01

    The Montessori classroom appears to be the ideal learning environment for children throughout elementary and middle school. It is based on the philosophy of Dr. Maria Montessori which describes an environment tailored to the Sensitive Periods of children, prepared with materials appropriate for the age and abilities of the children in a particular…

  12. International Education: The International Baccalaureate, Montessori and Global Citizenship

    Science.gov (United States)

    Brunold-Conesa, Cynthia

    2010-01-01

    The International Baccalaureate (IB) programs and Montessori education both claim to promote values associated with global citizenship in order to help prepare students for new challenges presented by an increasingly globalized world. While the IB's secondary programs are widespread in international schools, Montessori programs at that level are…

  13. Principle Elements of Curriculum in the Preschool Pattern of Montessori

    Science.gov (United States)

    Bahmaee, Azizollah Baboli; Saadatmand, Zohreh; Yarmohammadian, Mohammad Hossein

    2016-01-01

    Montessori the physician and educational philosopher was probably one of the most prominent and famous education theorizer in the field of preschool education. Current research attempts to extract and clarify the major elements of curriculum by reliance on Montessori viewpoints. In this paper first the philosophical basics of preschool education…

  14. The Social Relevance of Montessori in the First Plane

    Science.gov (United States)

    Andrews, Sarah Werner

    2015-01-01

    This article represents an amazing reversal of linguistic analysis. Usually Montessori language is translated into "state" terminology. In this case, Sarah Werner Andrews puts state quality assessment terms into Montessori language. For example, domains for school readiness include 1) physical wellbeing and motor development, 2) social…

  15. Absorbent Mind Update: Research Sheds New Light on Montessori Theory.

    Science.gov (United States)

    Haines, Annette M.

    1993-01-01

    Explores Maria Montessori's notion that a young child's brain is significantly different from an adult's and that young children develop according to a series of predictable "sensitive periods." Cites numerous empirical studies that support these and other ideas Montessori postulated without the advantage of sophisticated scientific…

  16. The Montessori Preschool: Preparation for Writing and Reading.

    Science.gov (United States)

    Richardson, Sylvia O.

    2000-01-01

    Discusses guidelines for the use of the Montessori prepared environment in addressing special needs students, focusing on writing and reading difficulties. Examines the value of Montessori's motor and sensory education as a bridge for both typically and atypically developing children. (JPB)

  17. International Education: The International Baccalaureate, Montessori and Global Citizenship

    Science.gov (United States)

    Brunold-Conesa, Cynthia

    2010-01-01

    The International Baccalaureate (IB) programs and Montessori education both claim to promote values associated with global citizenship in order to help prepare students for new challenges presented by an increasingly globalized world. While the IB's secondary programs are widespread in international schools, Montessori programs at that level are…

  18. Leaving a Legacy: Passing Montessori to the Next Generation

    Science.gov (United States)

    Loveless, Sylvia

    2012-01-01

    For each of the past 19 years, the American Montessori Society has chosen to recognize one Montessorian as an AMS Living Legacy. Recipients are honored at the AMS annual conference for their salient work or volunteerism in the Montessori field and their dedication and leadership that has made an impact on the AMS community. It seems fitting that…

  19. The Essence of Montessori. Spotlight: Updating Our Agendas.

    Science.gov (United States)

    Loeffler, Margaret H.

    2002-01-01

    Discusses the essential elements of Montessori educational philosophy and theory, focusing on the integration, development, and maintenance of the four characteristics of normalization (concentration, work, discipline, sociability) into adulthood. Discusses Montessori's view that development and retention of these positive characteristics could be…

  20. AMS at 47, Montessori at 100: A Memoir

    Science.gov (United States)

    Blessington, John P.

    2007-01-01

    The role of the Skalel family and their founding of Whitby School in 1958 were the spark that started the Montessori movement in the United States. Ann Skalel was impressed with the Montessori method, having seen it in practice in Ireland, that she wanted to start such a school in Greenwich, CT for her grandchildren. Tragically, Skalel and her…

  1. Maria Montessori, John Dewey, and William H. Kilpatrick

    Science.gov (United States)

    Thayer-Bacon, Barbara

    2012-01-01

    I explore Montessori's story in terms of her initial warm reception by America to her educational research, and her later cooling off, once Dewey's student, Kilpatrick, published The Montessori System Examined and declared her work to be based on psychological theory that was fifty years behind the times. I argue that there is a troubling gendered…

  2. ICTs and Montessori for Learning Disabilities

    Directory of Open Access Journals (Sweden)

    Athanasios Drigas

    2017-10-01

    Full Text Available This paper concentrates on the Montessori philosophy and examines how this learning theory currently gives credence to cognitive processes of the mind, as suitable intervention used to the training of children with learning disabilities. Furthermore, Montessori’s system and materials in combination with the support of new technologies as well as their implementation on various kinds of Information and Communication Technologies (ICTs have great successes regarding the support of disability and the enhancement of learning process.

  3. Montessori-skole: die ander kant

    Directory of Open Access Journals (Sweden)

    Monica Viljoen

    1995-03-01

    Full Text Available Na aanleiding van die artikel “Die invloed van die New Age-beweging op die onderwysagenda van die toekoms” deur Lien van Niekerk en Corinne Meier van die Departement Historiese Opvoedkunde van Unisa (vgl. Koers, 59 (1 1994:69-84 wil ek graag ’n ander sy van Montessori-skole onder die aandag van Koers lesers bring.

  4. The Role of the Educator in a Montessori Classroom

    Directory of Open Access Journals (Sweden)

    Izabela T.C. BARBIERU

    2016-06-01

    Full Text Available The traditional school shows the educator as the subject in education, the keeper of information and all control. The child is considered to be the object in education, the one who passively receives information from outside. The following study introduces a new model of educator for pre-school. His role appears to be passive. Indeed, he has the knowledge, but this new conception is just to provide the child with the necessary materials for his development. The Montessori teacher shows the child how to use the materials then he withdraws, humbly, just to observe the feedback. Using the observation, this study proposes a new approach towards the child by avoiding the adult’s constraint. It places the child into a free environment filled with firm, precise limits. Training the adult into the child’s psychology and knowing his stages of development can lead to a better understanding and discovery of the child.

  5. Maria Montessori a different children glance

    Directory of Open Access Journals (Sweden)

    Vittoria Bosna

    2015-02-01

    Full Text Available Maria Montessori was  one of the most important female figures in the 20th-century Italian pedagogical overview. She deeply examined the child and his/her “absorbing” mind in a way that clarified the significant role played by the environment in cognitive and emotional education. Il metodo della pedagogia scientifica (1909 was her first study where she pointed out that science should analyse how the child’s personality develops in social interaction. Maria Montessori claimed children’s rights with respect to the adults’ world by underlining the traditional error -in psychological and educational terms-which used to compel the child to act not complying with his/her own nature. To this end, she organized the child’s educational context-that is the kindergarten- like an ideal place where the child could live his/her educational experiences by freely acting and by being appropriately stimulated. Montessori’s thought has led to fruitful implications related to such pedagogical topics as those currently tackled in contemporary pedagogy: i.e.: the relation between environment and education, the  organization of the teaching and  learning process, the use of procedures, methodologies and materials designed for a relevant pedagogical intervention.How to reference this articleBosna, V. (2015. Maria Montessori uno sguardo diverso sull’infanzia. Foro de Educación, 13(18, pp. 37-50. doi: http://dx.doi.org/10.14516/fde.2015.013.018.002 

  6. Effects of intergenerational Montessori-based activities programming on engagement of nursing home residents with dementia

    Directory of Open Access Journals (Sweden)

    Michelle M Lee

    2007-10-01

    Full Text Available Michelle M Lee1, Cameron J Camp2, Megan L Malone21Midwestern University, Department of Behavioral Medicine, Downers Grove, IL , USA; 2Myers Research Institute of Menorah Park Center for Senior Living, Beachwood, OH, USA Abstract: Fourteen nursing home residents on a dementia special care unit at a skilled nursing facility took part in one-to-one intergenerational programming (IGP with 15 preschool children from the facility’s on-site child care center. Montessori-based activities served as the interface for interactions between dyads. The amount of time residents demonstrated positive and negative forms of engagement during IGP and standard activities programming was assessed through direct observation using a tool developed for this purpose – the Myers Research Institute Engagement Scale (MRI-ES. These residents with dementia displayed the ability to successfully take part in IGP. Most successfully presented “lessons” to the children in their dyads, similar to the way that Montessori teachers present lessons to children, while persons with more severe cognitive impairment took part in IGP through other methods such as parallel play. Taking part in IGP was consistently related with higher levels of positive engagement and lower levels of negative forms of engagement in these residents with dementia than levels seen in standard activities programming on the unit. Implications of using this form of IGP, and directions for future research, are discussed.Keywords: Montessori-based activities, intergenerational programming, engagement, dementia

  7. Racial and Economic Diversity in U.S. Public Montessori Schools

    Directory of Open Access Journals (Sweden)

    Mira Catherine Debs

    2016-11-01

    Full Text Available As public Montessori schools rapidly expand through the United States, the question then arises: What population of students do the schools serve? This study presents a new empirical data set examining the racial and economic diversity of 300 whole-school, public Montessori programs open in 2012–2013, where the entire school uses the Montessori Method. While school-choice scholars are concerned that choice programs like Montessori lead to greater student segregation by race and social class, this study finds a variety of outcomes for public Montessori. Public Montessori as a sector has strengths in student racial and socioeconomic diversity, but it also has diversity challenges, particularly among Montessori charters. The study concludes with recommended strategies for public Montessori schools to enroll a racially and economically diverse student body.

  8. Square Pegs in Round Holes: Montessori Principals' Perceptions of Science Education in Texas Public Schools

    Science.gov (United States)

    Pollock, Lindsey

    2013-01-01

    The purpose of this phenomenological study was to examine the perceptions of Texas public Montessori school principals as instructional leaders in science. Twelve public Montessori school principals were interviewed for this study. Two research questions were used: How do public Montessori principals perceive Texas science standards in public…

  9. Physical Activity in Preschool Children: Comparison between Montessori and Traditional Preschools

    Science.gov (United States)

    Pate, Russell R.; O'Neill, Jennifer R.; Byun, Wonwoo; McIver, Kerry L.; Dowda, Marsha; Brown, William H.

    2014-01-01

    Background: Little is known about the influence of Montessori methods on children's physical activity (PA). This cross-sectional study compared PA of children attending Montessori and traditional preschools. Methods: We enrolled 301 children in 9 Montessori and 8 traditional preschools in Columbia, South Carolina. PA was measured by accelerometry…

  10. Physical Activity in Preschool Children: Comparison between Montessori and Traditional Preschools

    Science.gov (United States)

    Pate, Russell R.; O'Neill, Jennifer R.; Byun, Wonwoo; McIver, Kerry L.; Dowda, Marsha; Brown, William H.

    2014-01-01

    Background: Little is known about the influence of Montessori methods on children's physical activity (PA). This cross-sectional study compared PA of children attending Montessori and traditional preschools. Methods: We enrolled 301 children in 9 Montessori and 8 traditional preschools in Columbia, South Carolina. PA was measured by accelerometry…

  11. Square Pegs in Round Holes: Montessori Principals' Perceptions of Science Education in Texas Public Schools

    Science.gov (United States)

    Pollock, Lindsey

    2013-01-01

    The purpose of this phenomenological study was to examine the perceptions of Texas public Montessori school principals as instructional leaders in science. Twelve public Montessori school principals were interviewed for this study. Two research questions were used: How do public Montessori principals perceive Texas science standards in public…

  12. The effect of three different educational approaches on children's drawing ability: Steiner, Montessori and traditional.

    Science.gov (United States)

    Cox, M V; Rowlands, A

    2000-12-01

    Although there is a national curriculum for art education in the UK there are also alternative approaches in the private sector. This paper addresses the issue of the effect of these approaches on children's drawing ability. To compare the drawing ability in three drawing tasks of children in Steiner, Montessori and traditional schools. The participants were 60 school children between the ages of 5;11 and 7;2. Twenty children were tested in each type of school. Each child completed three drawings: a free drawing, a scene and an observational drawing. As predicted, the free and scene drawings of children in the Steiner school were rated more highly than those of children in Montessori and traditional schools. Steiner children's use of colour was also rated more highly, although they did not use more colours than the other children. Steiner children used significantly more fantasy topics in their free drawings. Further observation indicated that the Steiner children were better at using the whole page and organising their drawings into a scene; their drawings were also more detailed. Contrary to previous research Montessori children did not draw more inanimate objects and geometrical shapes or fewer people than other children. Also, contrary to the prediction, Steiner children were significantly better rather than worse than other children at observational drawing. The results suggest that the approach to art education in Steiner schools is conducive not only to more highly rated imaginative drawings in terms of general drawing ability and use of colour but also to more accurate and detailed observational drawings.

  13. Modernost pedagoške koncepcije Marije Montessori

    OpenAIRE

    Bašić, Slavica

    2011-01-01

    U zadnjim desetljećima sve veći broj znanstvenika i pedagoga praktičara pokazuje interes za Montessori pedagogiju, provjerava je u praksi i potvrđuje da je riječ o modernoj, vremenu primjerenoj pedagogiji koja odgovara na razvojne potrebe suvremene djece i mladih. Brojna istraživanja pokazuju kako djeca iz Montessori škola, u usporedbi s djecom iz standardnih škola, pokazuju bolju motivaciju za učenje, višestruke interese, samostalnost i pozitivan odnos prema učenju te veću odgovornost prema ...

  14. Successful applications of montessori methods with children at risk for learning disabilities.

    Science.gov (United States)

    Pickering, J S

    1992-12-01

    The critical elements in the Montessori philosophy are respect for the child, individualization of the program to that child, and the fostering of independence. With her research background, Maria Montessori devised a multisensory developmental method and designed materials which isolate each concept the teacher presents to the child.In presenting these materials the teacher observes the concept and skill development level of the child, ascertaining areas of strength and weakness and matching the next presentation to the child's level of development. Using small sequential steps, the teacher works to ameliorate weakness and guide the student to maximize his strengths. These presentations, usually initiated by the child, enhance cognitive growth using a process which integrates his physical, social, and emotional development.The curriculum contains four major content areas: Practical Life; Sensorial; Oral and Written Language; and Mathematics. Geography, History, Science, Art, Music, Literature, and Motor Skills are also included. In all of these the Montessori presentations build from the simple to the complex, from the concrete to the abstract, and from percept to concept. Vocabulary and language usage are integral to each presentation.The procedures introduced through these presentations are designed to enhance attention, increase self-discipline and self-direction, and to promote order, organization, and the development of a work cycle. At-risk children benefit from the structure, the procedures, and the curriculum. Applications of this method require more teacher selection of materials and direct teaching, particularly of language and math symbols and their manipulations.This early childhood intervention provides an individualized program which allows the at-risk child a successful experience at the preschool level. The program includes a strong conceptual preparation for later academic learning and it promotes the development of a healthy self-concept.

  15. Quantifying Snow Volume Uncertainty from Repeat Terrestrial Laser Scanning Observations

    Science.gov (United States)

    Gadomski, P. J.; Hartzell, P. J.; Finnegan, D. C.; Glennie, C. L.; Deems, J. S.

    2014-12-01

    Terrestrial laser scanning (TLS) systems are capable of providing rapid, high density, 3D topographic measurements of snow surfaces from increasing standoff distances. By differencing snow surface with snow free measurements within a common scene, snow depths and volumes can be estimated. These data can support operational water management decision-making when combined with measured or modeled snow densities to estimate basin water content, evaluate in-situ data, or drive operational hydrologic models. In addition, change maps from differential TLS scans can also be used to support avalanche control operations to quantify loading patterns for both pre-control planning and post-control assessment. However, while methods for computing volume from TLS point cloud data are well documented, a rigorous quantification of the volumetric uncertainty has yet to be presented. Using repeat TLS data collected at the Arapahoe Basin Ski Area in Summit County, Colorado, we demonstrate the propagation of TLS point measurement and cloud registration uncertainties into 3D covariance matrices at the point level. The point covariances are then propagated through a volume computation to arrive at a single volume uncertainty value. Results from two volume computation methods are compared and the influence of data voids produced by occlusions examined.

  16. Extracting three-body observables from finite-volume quantities

    CERN Document Server

    Hansen, Maxwell T

    2015-01-01

    Scattering and transition amplitudes with three-hadron final states play an important role in nuclear and particle physics. However, predicting such quantities using numerical Lattice QCD is very difficult, in part because of the effects of Euclidean time and finite volume. In this review we highlight recent formal developments that work towards overcoming these issues. We organize the presentation into three parts: large volume expansions, non-relativistic nonperturbative analyses, and nonperturbative studies based in relativistic field theory. In the first part we discuss results for ground state energies and matrix elements given by expanding in inverse box length, $1/L$. We describe complications that arise at $\\mathcal O(1/L^6)$ and include a table summarizing the results of different calculations. In the second part we summarize three recent non-relativistic non-perturbative studies and highlight the main conclusions of these works. This includes demonstrating that the three-particle finite-volume spect...

  17. A Comparison of the Achievement Test Performance of Children Who Attended Montessori Schools and Those Who Attended Non-Montessori Schools in Taiwan

    Science.gov (United States)

    Peng, Hsin-Hui

    2009-01-01

    There are two purposes of the current study. First was to examine whether or not children in the elementary school in Taiwan who had received Montessori early childhood education obtain significantly higher scores on tests of language arts, math, and social studies than children who attended non-Montessori pre-elementary programs. Second one was…

  18. Implementing a Robotics Curriculum in an Early Childhood Montessori Classroom

    Science.gov (United States)

    Elkin, Mollie; Sullivan, Amanda; Bers, Marina Umaschi

    2014-01-01

    This paper explores how robotics can be used as a new educational tool in a Montessori early education classroom. It presents a case study of one early educator's experience of designing and implementing a robotics curriculum integrated with a social science unit in her mixed-age classroom. This teacher had no prior experience using robotics in…

  19. Efficacy of Montessori Education in Attention Gathering Skill of Children

    Science.gov (United States)

    Yildirim Dogru, S. Sunay

    2015-01-01

    The aim of this study is to evaluate the efficacy of Montessori education which is offered to upskill the attention gathering skill of children with attention-deficit/hyperactivity disorder. In total fifteen pre-schooler participants, six girls and nine boys who are diagnosed with ADHD (7 of the children with ADHD, 8 with only AD), joined to this…

  20. Think Big: Leadership Projects for AMS and Montessori Educators

    Science.gov (United States)

    Chattin-McNichols, John

    2014-01-01

    The American Montessori Society's (AMS) 2014 Living Legacy recipient, John Chattin-McNichols, delivered the keynote address at the Annual Conference in Dallas, TX, on March 27, 2014, In his speech, he described three overall highlights of AMS: (1) AMS is now a world-leading organization; (2) It must become a learning organization; and (3)…

  1. Implementing a Robotics Curriculum in an Early Childhood Montessori Classroom

    Science.gov (United States)

    Elkin, Mollie; Sullivan, Amanda; Bers, Marina Umaschi

    2014-01-01

    This paper explores how robotics can be used as a new educational tool in a Montessori early education classroom. It presents a case study of one early educator's experience of designing and implementing a robotics curriculum integrated with a social science unit in her mixed-age classroom. This teacher had no prior experience using robotics in…

  2. Enacting Attention: Concentration and Shared Focus in Montessori Classrooms

    Science.gov (United States)

    Epstein, Paul

    2012-01-01

    Concentration is a "sine qua non," a hallmark, of a Montessori Casa program. Yet, it happens that some children do not concentrate. They do not engage with the materials in the classic pattern of normalization. They are not challenged by ADD, ADHD, or a variant of sensory integration spectrum disorder. Instead of working alone, they prefer the…

  3. Think Big: Leadership Projects for AMS and Montessori Educators

    Science.gov (United States)

    Chattin-McNichols, John

    2014-01-01

    The American Montessori Society's (AMS) 2014 Living Legacy recipient, John Chattin-McNichols, delivered the keynote address at the Annual Conference in Dallas, TX, on March 27, 2014, In his speech, he described three overall highlights of AMS: (1) AMS is now a world-leading organization; (2) It must become a learning organization; and (3)…

  4. Guiding the Future: How Art Enhances a Montessori Child's Life

    Science.gov (United States)

    Short, Barb

    2007-01-01

    One thing about the Madison Montessori School that impressed this author is its belief in the power and importance of art in education: that an art program can enhance the power of the core learning programs designed for the children and that art develops the whole child, the whole family, the whole school, and the whole community. Its program,…

  5. Constructing Professional Identities: Montessori Teachers' Voices and Visions

    Science.gov (United States)

    Malm, Birgitte

    2004-01-01

    In this study, occupational life histories of Montessori teachers in Sweden have been constructed in collaboration with a group of them. Data exploration and analysis have included journals, interviews, written reflections and conversations. Of interest has been to shed light on underlying values, ways in which professional roles reflect personal…

  6. Montessori and Steiner: A Pattern of Reverse Symmetries.

    Science.gov (United States)

    Coulter, Dee Joy

    2003-01-01

    Explains the educational movements precipitated by Maria Montessori and Rudolf Steiner as comprising a pattern of reverse symmetries. Notes the influence of war on their philosophies. Discusses reverse symmetries in curriculum related to mathematics, geography, and history. Maintains that each of these two movements holds the other at its core,…

  7. Effects of intergenerational Montessori-based activities programming on engagement of nursing home residents with dementia.

    Science.gov (United States)

    Lee, Michelle M; Camp, Cameron J; Malone, Megan L

    2007-01-01

    Fourteen nursing home residents on a dementia special care unit at a skilled nursing facility took part in one-to-one intergenerational programming (IGP) with 15 preschool children from the facility's on-site child care center. Montessori-based activities served as the interface for interactions between dyads. The amount of time residents demonstrated positive and negative forms of engagement during IGP and standard activities programming was assessed through direct observation using a tool developed for this purpose--the Myers Research Institute Engagement Scale (MRI-ES). These residents with dementia displayed the ability to successfully take part in IGP. Most successfully presented "lessons" to the children in their dyads, similar to the way that Montessori teachers present lessons to children, while persons with more severe cognitive impairment took part in IGP through other methods such as parallel play. Taking part in IGP was consistently related with higher levels of positive engagement and lower levels of negative forms of engagement in these residents with dementia than levels seen in standard activities programming on the unit. Implications of using this form of IGP, and directions for future research, are discussed.

  8. The Observation Scientist

    Science.gov (United States)

    O'Shaughnessy, Molly

    2016-01-01

    Once the reasons for habitual observation in the classroom have been established, and the intent to observe has been settled, the practical details of observation must be organized. In this article, O'Shaughnessy gives us a model for the implementation of observation. She thoroughly reviews Montessori's work curves and how they can be used to show…

  9. From Boutique to Big Box: A Case Study Concerning Teacher Change Transitioning to a Public Montessori Elementary School

    Science.gov (United States)

    Van Acker, Teresa A.

    2013-01-01

    Public Montessori schools have grown in number significantly in the United States. This case study chronicles the journey of teachers as they navigate the tension of balancing the Montessori approach with an accountability Standards model. Although Montessori may be in demand among parents in the nation, exhibited by the increase in public…

  10. From Boutique to Big Box: A Case Study Concerning Teacher Change Transitioning to a Public Montessori Elementary School

    Science.gov (United States)

    Van Acker, Teresa A.

    2013-01-01

    Public Montessori schools have grown in number significantly in the United States. This case study chronicles the journey of teachers as they navigate the tension of balancing the Montessori approach with an accountability Standards model. Although Montessori may be in demand among parents in the nation, exhibited by the increase in public…

  11. Measurement of transplanted pancreatic volume using computed tomography: reliability by intra- and inter-observer variability

    Energy Technology Data Exchange (ETDEWEB)

    Lundqvist, Eva; Segelsjoe, Monica; Magnusson, Anders [Uppsala Univ., Dept. of Radiology, Oncology and Radiation Science, Section of Radiology, Uppsala (Sweden)], E-mail: eva.lundqvist.8954@student.uu.se; Andersson, Anna; Biglarnia, Ali-Reza [Dept. of Surgical Sciences, Section of Transplantation Surgery, Uppsala Univ. Hospital, Uppsala (Sweden)

    2012-11-15

    Background Unlike other solid organ transplants, pancreas allografts can undergo a substantial decrease in baseline volume after transplantation. This phenomenon has not been well characterized, as there are insufficient data on reliable and reproducible volume assessments. We hypothesized that characterization of pancreatic volume by means of computed tomography (CT) could be a useful method for clinical follow-up in pancreas transplant patients. Purpose To evaluate the feasibility and reliability of pancreatic volume assessment using CT scan in transplanted patients. Material and Methods CT examinations were performed on 21 consecutive patients undergoing pancreas transplantation. Volume measurements were carried out by two observers tracing the pancreatic contours in all slices. The observers performed the measurements twice for each patient. Differences in volume measurement were used to evaluate intra- and inter-observer variability. Results The intra-observer variability for the pancreatic volume measurements of Observers 1 and 2 was found to be in almost perfect agreement, with an intraclass correlation coefficient (ICC) of 0.90 (0.77-0.96) and 0.99 (0.98-1.0), respectively. Regarding inter-observer validity, the ICCs for the first and second measurements were 0.90 (range, 0.77-0.96) and 0.95 (range, 0.85-0.98), respectively. Conclusion CT volumetry is a reliable and reproducible method for measurement of transplanted pancreatic volume.

  12. Natural Hazards Observer. Volume 32, Number 2, November 2007

    Science.gov (United States)

    2007-11-01

    is the from large-scale emergencies. recognition that all emergencies begin as local events and -1 Natural Hazards Observer - November 2007 that local...two new graduate research assistants Brandl Gbet is a PhD student in the Department of Sociology at the University of Colorado. She graduated from the

  13. Understanding the Montessori Approach: Early Years Education in Practice. Understanding the... Approach

    Science.gov (United States)

    Isaacs, Barbara

    2012-01-01

    "Understanding the Montessori Approach" is a much needed source of information for those wishing to extend and consolidate their understanding of the Montessori Approach and how it is used in the teaching and learning of young children. It will enable the reader to analyse the essential elements of this Approach to early childhood and and its…

  14. 19th International Montessori Training Course, London Lecture 29 17 November 1933

    Science.gov (United States)

    Montessori, Maria

    2016-01-01

    Followers of Maria Montessori become accustomed to the oft-repeated stories that drive home a point, but here is a new treasure. This lecture tells of an experiment that Montessori began with 12- to 14-year-old children and then with 10-year-olds. When the poetry of Dante was introduced to these students, they became passionate and grew to love…

  15. Do Children in Montessori Schools Perform Better in the Achievement Test? A Taiwanese Perspective

    Science.gov (United States)

    Peng, Hsin-Hui; Md-Yunus, Sham'ah

    2014-01-01

    The study examines whether elementary school students in Taiwan who had received Montessori education achieved significantly higher scores on tests of language arts, math, and social studies than students who attended non-Montessori elementary programs. One hundred ninety six children in first, second, and third grade participated in the study.…

  16. Determining the Measurement Quality of a Montessori High School Teacher Evaluation Survey

    Directory of Open Access Journals (Sweden)

    Anthony Philip Setari

    2017-05-01

    Full Text Available The purpose of this study was to conduct a psychometric validation of a course evaluation instrument, known as a student evaluation of teaching (SET, implemented in a Montessori high school. The authors demonstrate to the Montessori community how to rigorously examine the measurement and assessment quality of instruments used within Montessori schools. The Montessori high school community needs an SET that has been rigorously examined for measurement issues. The examined SET was developed by a Montessori high school, and the sample data were collected from Montessori high school students. Using a Rasch partial credit model, the results of the analysis identified several measurement issues, including multidimensionality, misfit items, and inappropriate item difficulty levels. A revised version of the SET underwent the same analysis procedure, and the results indicated that measurement issues persisted. The authors suggest several ways to improve the overall measurement quality of the instrument while keeping the Montessori foundation. Additional validation studies with a revised version of the SET will be needed before the instrument can be endorsed for full implementation in a Montessori setting.

  17. Educational Gymnastics: The Effectiveness of Montessori Practical Life Activities in Developing Fine Motor Skills in Kindergartners

    Science.gov (United States)

    Bhatia, Punum; Davis, Alan; Shamas-Brandt, Ellen

    2015-01-01

    Research Findings: A quasi-experiment was undertaken to test the effect of Montessori practical life activities on kindergarten children's fine motor development and hand dominance over an 8-month period. Participants were 50 children age 5 in 4 Montessori schools and 50 students age 5 in a kindergarten program in a high-performing suburban…

  18. Music Education in Montessori Schools: An Exploratory Study of School Directors' Perceptions in the United States

    Science.gov (United States)

    Rajan, Rekha S.

    2017-01-01

    This exploratory study examined the changing role of music education and the availability of musical experiences for students attending Montessori schools in the Midwestern United States. On a survey instrument designed by the researcher, Montessori school directors (N = 36) from eight states shared descriptions of the current role of music at…

  19. "Do You Teach Them Anything?" What Really Happens in a Montessori Toddler Class

    Science.gov (United States)

    Dore, Heather S.

    2014-01-01

    The greatest sign of success for a teacher is to be able to say, "The children are now working as if I did not exist" (Montessori, 1967, p. 283). Montessori Toddler teachers spend a great amount of time preparing and perfecting their environments to allow and to encourage learning to happen. The teachers are constantly adjusting and…

  20. Montessori Infant and Toddler Programs: How Our Approach Meshes with Other Models

    Science.gov (United States)

    Miller, Darla Ferris

    2011-01-01

    Today, Montessori infant & toddler programs around the country usually have a similar look and feel--low floor beds, floor space for movement, low shelves, natural materials, tiny wooden chairs and tables for eating, and not a highchair or swing in sight. But Montessori toddler programs seem to fall into two paradigms--one model seeming more…

  1. Montessori Instruction: A Model for Inclusion in Early Childhood Classrooms and beyond

    Science.gov (United States)

    McKenzie, Ginger Kelley; Zascavage, Victoria S.

    2012-01-01

    Maria Montessori was one of the first special educators. In 1898, as an assistant instructor at the University of Rome's Psychiatric Clinic, Montessori visited an asylum for the "insane" and became interested in the children with special needs who were housed there. She noticed that the children were not being stimulated; learning was at a…

  2. [Effects of Montessori education on the intellectual development in children aged 2 to 4 years].

    Science.gov (United States)

    He, Hong-Ling; Yan, Hong; Zuo, Ling; Liu, Ling; Zhang, Xi-Ping

    2009-12-01

    To compare the effects of Montessori education and traditional education on the intellectual development in children aged 2 to 4 years. Children aged between 2 to 3 years who were enrolled in a kindergarten in September 2006 were randomly assigned to the Montessori education and the traditional education groups. In addition to receiving the traditional education, the Montessori education group participated in the two-hour Montessori pedagogical activities every day. The intellectual development was evaluated by the Neuropsychological Development Examination Format for Children Aged 0~6 years published by Capital Pediatrics Research Institute at enrollment and one year after the trial. There were no significant differences in the intelligence growth level between the Montessori education and the traditional education groups at enrollment. After one year, the levels of fine movements, adaptation ability, language, and social behavior developments in the Montessori education group were significantly higher than those in the traditional education group (pMontessori education group were also higher than those in the traditional education group (pMontessori education can promote the development of large motor ability, fine movements, language, and social behavior in children.

  3. A Tribute to Cleo Monson: First National Director of the American Montessori Society

    Science.gov (United States)

    Haskins, Cathleen

    2010-01-01

    The early 1960s was a critical, albeit chaotic, period for the revival of the Montessori movement, which had been recently rekindled in the United States. The success or failure of the movement can arguably be said to have rested squarely upon the backs of those founding members and early supporters of the fledgling American Montessori Society,…

  4. Case Studies of Two Down's Syndrome Children Functioning in a Montessori Environment. Research Project.

    Science.gov (United States)

    Schramm, Barbara J.

    Presented are case histories of two Down's Syndrome (Mosaic form) 6- and 10-year-old girls who attended regular Montessori classes. General characteristics of Down's Syndrome and other retarded children are reviewed and compared with the two girls' growth and development (according to Piaget's proposed stages). The Montessori emphasis on sensorial…

  5. Educational Gymnastics: The Effectiveness of Montessori Practical Life Activities in Developing Fine Motor Skills in Kindergartners

    Science.gov (United States)

    Bhatia, Punum; Davis, Alan; Shamas-Brandt, Ellen

    2015-01-01

    Research Findings: A quasi-experiment was undertaken to test the effect of Montessori practical life activities on kindergarten children's fine motor development and hand dominance over an 8-month period. Participants were 50 children age 5 in 4 Montessori schools and 50 students age 5 in a kindergarten program in a high-performing suburban…

  6. Montessori Infant and Toddler Programs: How Our Approach Meshes with Other Models

    Science.gov (United States)

    Miller, Darla Ferris

    2011-01-01

    Today, Montessori infant & toddler programs around the country usually have a similar look and feel--low floor beds, floor space for movement, low shelves, natural materials, tiny wooden chairs and tables for eating, and not a highchair or swing in sight. But Montessori toddler programs seem to fall into two paradigms--one model seeming more…

  7. "Do You Teach Them Anything?" What Really Happens in a Montessori Toddler Class

    Science.gov (United States)

    Dore, Heather S.

    2014-01-01

    The greatest sign of success for a teacher is to be able to say, "The children are now working as if I did not exist" (Montessori, 1967, p. 283). Montessori Toddler teachers spend a great amount of time preparing and perfecting their environments to allow and to encourage learning to happen. The teachers are constantly adjusting and…

  8. Do Children in Montessori Schools Perform Better in the Achievement Test? A Taiwanese Perspective

    Science.gov (United States)

    Peng, Hsin-Hui; Md-Yunus, Sham'ah

    2014-01-01

    The study examines whether elementary school students in Taiwan who had received Montessori education achieved significantly higher scores on tests of language arts, math, and social studies than students who attended non-Montessori elementary programs. One hundred ninety six children in first, second, and third grade participated in the study.…

  9. Maria Montessori on the Natural Formation of Character in Young Children

    Science.gov (United States)

    Murphy, Madonna

    2003-01-01

    This paper examines this issue of character formation from the perspective of Maria Montessori. Her method has much to offer in developing more peaceful classrooms and helping to develop compassionate and caring citizens. Maria Montessori developed a complete philosophy of education based on her discovery that the child has a mind able to absorb…

  10. Montessori Instruction: A Model for Inclusion in Early Childhood Classrooms and beyond

    Science.gov (United States)

    McKenzie, Ginger Kelley; Zascavage, Victoria S.

    2012-01-01

    Maria Montessori was one of the first special educators. In 1898, as an assistant instructor at the University of Rome's Psychiatric Clinic, Montessori visited an asylum for the "insane" and became interested in the children with special needs who were housed there. She noticed that the children were not being stimulated; learning was at a…

  11. An intergenerational program for persons with dementia using Montessori methods.

    Science.gov (United States)

    Camp, C J; Judge, K S; Bye, C A; Fox, K M; Bowden, J; Bell, M; Valencic, K; Mattern, J M

    1997-10-01

    An intergenerational program bringing together older adults with dementia and preschool children in one-on-one interactions is described. Montessori activities, which have strong ties to physical and occupational therapy, as well as to theories of developmental and cognitive psychology, are used as the context for these interactions. Our experience indicates that older adults with dementia can still serve as effective mentors and teachers to children in an appropriately structured setting.

  12. Social Justice Education in an Urban Charter Montessori School

    Directory of Open Access Journals (Sweden)

    Kira Banks

    2016-11-01

    Full Text Available As the Montessori Method continues its expansion in public education, a social justice lens is needed to analyze its contributions and limitations, given the increase in racial and socioeconomic diversity in the United States. Furthermore, much of the work in Social Justice Education (SJE focuses on classroom techniques and curriculum, overlooking the essential work of school administrators and parents, whose work significantly influences the school community. The current study applied an SJE framework to the efforts of one urban, socioeconomically and racially integrated Montessori charter school. We examined the extent to which SJE principles were incorporated across the school community, using an inductive, qualitative, case-study approach that included meetings, surveys, focus groups, and interviews. Administrators quickly adopted a system-wide approach, but parents—often color-blind or minimizing of the relevance of race—consistently resisted. Study results imply a continued need for an institutional approach, not solely a classroom or curricular focus, when integrating social justice into Montessori schools.

  13. Montessori Early Childhood Teacher Perceptions of Family Priorities and Stressors

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    Ann Epstein

    2015-11-01

    Full Text Available Teachers of young children work closely with families. One component of teacher-family partnerships is teachers’ understanding of family priorities and stressors. This study examines Montessori early childhood (ages three through six teacher perceptions of family priorities and stressors through an analysis of responses to two parallel surveys.  Eighty teachers (37% of those who received the survey and forty-nine family members (representing a 55% response rate completed the survey.  Significant differences were found between teachers’ perceptions of four (of seven family priorities and families’ actual responses. Teachers ranked “making academic progress” as the most important of seven possible family priorities. However, families stated that “developing kindness” is the most important priority for their young children. No significant differences were found when comparing teacher rankings of family stressors with actual family responses. Montessori early childhood teachers ranked “not having enough time” as the most stressful of six possible stressors. Families confirmed that time pressures cause them the most stress. Maria Montessori’s recommendations for teachers and families are summarized. Recommendations for building stronger family partnerships in the context of Montessori’s philosophy, for example on-going self-reflection, are provided.             Keywords: Montessori, teacher-family partnerships, early childhood teacher perceptions

  14. Students of Color and Public Montessori Schools: A Review of the Literature

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    Mira Debs

    2017-05-01

    Full Text Available Students of color comprise a majority in public Montessori school enrollments around the United States, and practitioners are often asked for evidence of the Montessori Method’s benefits for these students. This article examines the relevant literature related to the experiences of students of color in public Montessori schools. Research finds Montessori education offers both opportunities and limitations for students of color in attending diverse schools, developing executive functions, achieving academically, accessing early childhood education and culturally responsive education, minimizing racially disproportionate discipline, and limiting overidentification for special education. Public Montessori education’s efficacy with students of color may be limited by several factors: the lack of diversity of the teaching staff and culturally responsive teacher education, schools that struggle to maintain racially diverse enrollments, and the challenge of communicating Montessori’s benefits to families with alternative views of education. The review concludes with directions for future research.

  15. Differences in Mathematics Scores Between Students Who Receive Traditional Montessori Instruction and Students Who Receive Music Enriched Montessori Instruction

    OpenAIRE

    Harris, Maureen Ann

    2007-01-01

    While a growing body of research reveals the beneficial effects of music on education performance the value of music in educating the young child is not being recognized. If research of students in the school system indicates that learning through the arts can benefit the ‘whole’ child, that math achievement scores are significantly higher for those students studying music, and if Montessori education produces a more academically accomplished child, then what is the potential for the child wh...

  16. Differences in Mathematics Scores Between Students Who Receive Traditional Montessori Instruction and Students Who Receive Music Enriched Montessori Instruction

    OpenAIRE

    Harris, Maureen Ann

    2007-01-01

    While a growing body of research reveals the beneficial effects of music on education performance the value of music in educating the young child is not being recognized. If research of students in the school system indicates that learning through the arts can benefit the ‘whole’ child, that math achievement scores are significantly higher for those students studying music, and if Montessori education produces a more academically accomplished child, then what is the potential for the child wh...

  17. Using a Montessori method to increase eating ability for institutionalised residents with dementia: a crossover design.

    Science.gov (United States)

    Lin, Li-Chan; Huang, Ya-Ju; Watson, Roger; Wu, Shiao-Chi; Lee, Yue-Chune

    2011-11-01

    To investigate the efficacy of applying a Montessori intervention to improve the eating ability and nutritional status of residents with dementia in long-term care facilities. An early intervention for eating difficulties in patients with dementia can give them a better chance of maintaining independence and reduce the risk of malnutrition. An experimental crossover design was employed. Twenty-nine residents were chosen from two dementia special care units in metropolitan Taipei. To avoid contamination between participants in units using both Montessori and control interventions, two dementia special care units were randomly assigned into Montessori intervention (I1) and routine activities (I2) sequence groups. A two-period crossover design was used, with 15 residents assigned to Montessori intervention sequence I (I1, I2) and 14 residents assigned to Montessori intervention sequence II (I2, I1). On each intervention day, residents were given their assigned intervention. Montessori intervention was provided in 30-min sessions once every day, three days per week, for eight weeks. There was a two-week washout period between each intervention. There was a significant reduction in the Edinburgh Feeding Evaluation in Dementia score for the Montessori intervention period but not for the routine activities period, while the mean differences for the Eating Behavior Scale score, self-feeding frequency and self-feeding time were significantly higher than those of the routine activities period. Except for the Mini-Nutritional Assessment score post-test being significantly less than the pre-test for the routine activities period, no significant differences for any other variables were found for the routine activities period. This study confirms the efficacy of a Montessori intervention protocol on eating ability of residents with dementia. Adopting Montessori intervention protocols to maintain residents' self-feeding ability in clinical practice is recommended. Montessori

  18. A Systematic Review of Montessori-Based Activities for Persons With Dementia.

    Science.gov (United States)

    Sheppard, Christine L; McArthur, Caitlin; Hitzig, Sander L

    2016-02-01

    Montessori-based activities are becoming a popular approach for the care of older adults living with dementia. The aim of this study was to systematically assess the quality of the research examining the benefits of Montessori-based activities for persons with dementia. Six peer-reviewed databases were systematically searched for all relevant articles published until April 2015. Included articles were peer-reviewed studies published in English that employed Montessori-based activities with persons with dementia. Methodological quality was assessed by 2 independent raters using the Physiotherapy Evidence Database Scale or the Downs and Black evaluation tool. Levels of evidence were assigned to the study design using a modified Sackett scale. One hundred fifty articles were identified, and 14 were selected for inclusion. Level-2 evidence examining the impact of Montessori-based activities on eating behaviors suggested that difficulties with eating could be reduced with Montessori training. There was limited level-4 evidence for the benefits of Montessori-based activities on cognition, wherein benefits appeared to be specific to lower-level cognitive abilities including memory and attention. Finally, there is level-1 (n = 1), level-2 (n = 3), and level-4 (n = 6) evidence for the benefits of Montessori-based activities on engagement and affect, whereby constructive engagement and positive affect were heightened. Overall, there is a strong level of evidence for the benefits of Montessori-based activities on eating behaviors and weak evidence for the benefits on cognition. Evidence for the benefits of Montessori-based activities on engagement and affect are mixed. Future research is needed to examine the long-term benefits of Montessori-based activities. Copyright © 2016 AMDA – The Society for Post-Acute and Long-Term Care Medicine. Published by Elsevier Inc. All rights reserved.

  19. Montessori-based activities among persons with late-stage dementia: Evaluation of mental and behavioral health outcomes.

    Science.gov (United States)

    Wilks, Scott E; Boyd, P August; Bates, Samantha M; Cain, Daphne S; Geiger, Jennifer R

    2017-01-01

    Objectives Literature regarding Montessori-based activities with older adults with dementia is fairly common with early stages of dementia. Conversely, research on said activities with individuals experiencing late-stage dementia is limited because of logistical difficulties in sampling and data collection. Given the need to understand risks and benefits of treatments for individuals with late-stage dementia, specifically regarding their mental and behavioral health, this study sought to evaluate the effects of a Montessori-based activity program implemented in a long-term care facility. Method Utilizing an interrupted time series design, trained staff completed observation-based measures for 43 residents with late-stage dementia at three intervals over six months. Empirical measures assessed mental health (anxiety, psychological well-being, quality of life) and behavioral health (problem behaviors, social engagement, capacity for activities of daily living). Results Group differences were observed via repeated measures ANOVA and paired-samples t-tests. The aggregate, longitudinal results-from baseline to final data interval-for the psychological and behavioral health measures were as follows: problem behaviors diminished though not significantly; social engagement decreased significantly; capacities for activities of daily living decreased significantly; quality of life increased slightly but not significantly; anxiety decreased slightly but not significantly; and psychological well-being significantly decreased. Conclusion Improvements observed for quality of life and problem behaviors may yield promise for Montessori-based activities and related health care practices. The rapid physiological and cognitive deterioration from late-stage dementia should be considered when interpreting these results.

  20. Inter-observer variation in ultrasound measurement of the volume and diameter of thyroid nodules

    Energy Technology Data Exchange (ETDEWEB)

    Choi, Young Jun; Baek, Jung Hwan; Hong, Min Ji; Lee, Jeong Hyun [Dept. of Radiology, and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul (Korea, Republic of)

    2015-06-15

    Thyroid nodule measurement using ultrasonography (US) is widely performed in various clinical scenarios. The purpose of this study was to evaluate inter-observer variation in US measurement of the volume and maximum diameter of thyroid nodules. This retrospective study included 73 consecutive patients with 85 well-defined thyroid nodules greater than 1 cm in their maximum diameter. US examinations were independently performed by using standardized measurement methods, conducted by two clinically experienced thyroid radiologists. The maximum nodule diameter and nodule volume, calculated from nodule diameters using the ellipsoid formula, were obtained by each reader. Inter-observer variations in volume and maximum diameter were determined using 95% Bland-Altman limits of agreement. The degree of inter-observer variations in volumes and the maximum diameters were compared using the Student's t test, between nodules < 2 cm in maximum diameter and those with > or = 2 cm. The mean inter-observer difference in measuring the nodule volume was -1.6%, in terms of percentage of the nodule volume, and the 95% limit of agreement was +/- 13.1%. For maximum nodule diameter, the mean inter-observer difference was -0.6%, in terms of percentage of the nodule diameter, and the 95% limit of agreement was +/- 7.3%. Inter-observer variation in volume was greater in nodules of < 2 cm in maximum diameter, compared to the larger nodules (p = 0.035). However, no statistically significant difference was noted between the two groups regarding maximum nodule diameters (p = 0.511). Any differences smaller than 13.1% and 7.3% in volume and maximum diameter, respectively, measured by using US for well-defined thyroid nodules of > 1 cm should not be considered as a real change in size.

  1. Objectively measured sedentary behavior in preschool children: comparison between Montessori and traditional preschools.

    Science.gov (United States)

    Byun, Wonwoo; Blair, Steven N; Pate, Russell R

    2013-01-03

    This study aimed to compare the levels of objectively-measured sedentary behavior in children attending Montessori preschools with those attending traditional preschools. The participants in this study were preschool children aged 4 years old who were enrolled in Montessori and traditional preschools. The preschool children wore ActiGraph accelerometers. Accelerometers were initialized using 15-second intervals and sedentary behavior was defined as Montessori preschools, after adjusting for selected potential correlates of preschoolers' sedentary behavior. Children attending Montessori preschools spent less time in sedentary behavior than those attending traditional preschools during the in-school (44.4. min/hr vs. 47.1 min/hr, P = 0.03), after-school (42.8. min/hr vs. 44.7 min/hr, P = 0.04), and total-day (43.7 min/hr vs. 45.5 min/hr, P = 0. 009) periods. School type (Montessori or traditional), preschool setting (private or public), socio-demographic factors (age, gender, and socioeconomic status) were found to be significant predictors of preschoolers' sedentary behavior. Levels of objectively-measured sedentary behavior were significantly lower among children attending Montessori preschools compared to children attending traditional preschools. Future research should examine the specific characteristics of Montessori preschools that predict the lower levels of sedentary behavior among children attending these preschools compared to children attending traditional preschools.

  2. Application of Knowledge Based Systems for Child Performance Analysis in an Online Montessori Management System

    Directory of Open Access Journals (Sweden)

    Siti Hajar Khairuddin

    2012-01-01

    Full Text Available This paper focuses on the application of knowledge based systems for child performance analysis in an online Montessori module. Using knowledge based techniques, the system generates an automatic analysis based on the teacher's answers to a variety of questions about a child's performance of a specific Montessori activity. The questions were created through a study of the criteria used to assess the level of a child's performance and achievement. This prototype is designed as a proof-of-concept, to show how the knowledge base technique could be applied. To design the prototype, we conducted literature reviews on the delivery of Montessori methods and the knowledge base technique, and compared rule -based and case -based reasoning.  We selected rule-based reasoning for the concept prototype since it is suitable for Montessori activities which are well defined and easy to acquire.

  3. La Società Umanitaria e la diffusione del Metodo Montessori (1908-1923

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    Irene Pozzi

    2015-07-01

    Full Text Available The Società Umanitaria ofMilan, between 1918 and 1923, played an essential role in spreading and developing the Montessori Method. Studying in the Historical Archive of Società Umanitaria the numerous documents there collected, the author reconstructed the crucial moments of the extremely significant collaboration between Maria Montessori and Augusto Osimo, General Secretary of the Società Umanitaria.This complex and in-depth investigation was guided by the analysis, in specific, of the training courses for Montessori teachers organised by Società Umanitaria, essentially unexamined before this study, that allowed the researcher to have a deep insight into the action of Società Umanitaria aimed to promote and implement the Montessori Method in Italy and all around the world.

  4. Montessori Yönteminin Etkililiği

    OpenAIRE

    Eratay, Emine

    2016-01-01

    Bu araştırmanın amacı engelli ve engelli olmayan okulöncesi çocuklarında Montessori yönteminin etkililiğinin araştırılmasıdır. Bu amaçla Avrupa Birliği tarafından finanse edilen “Okulöncesi Dönemde Engelli ve Engelli Olmayan Çocuklar için Kaynaştırma Projesi” kapsamında bir hiperaktif, biri otistik tanısı konmuş ve 13’ü engelli olmayan olmak üzere toplam 15 çocuk araştırma kapsamına alınmış ve iki ay süresince Montessori eğitimi uygulanmıştır. Deneysel tek gruplu öntest-sontest modeli ile des...

  5. Optimal observability of sustained stochastic competitive inhibition oscillations at organellar volumes.

    Science.gov (United States)

    Davis, Kevin L; Roussel, Marc R

    2006-01-01

    When molecules are present in small numbers, such as is frequently the case in cells, the usual assumptions leading to differential rate equations are invalid and it is necessary to use a stochastic description which takes into account the randomness of reactive encounters in solution. We display a very simple biochemical model, ordinary competitive inhibition with substrate inflow, which is only capable of damped oscillations in the deterministic mass-action rate equation limit, but which displays sustained oscillations in stochastic simulations. We define an observability parameter, which is essentially just the ratio of the amplitude of the oscillations to the mean value of the concentration. A maximum in the observability is seen as the volume is varied, a phenomenon we name system-size observability resonance by analogy with other types of stochastic resonance. For the parameters of this study, the maximum in the observability occurs at volumes similar to those of bacterial cells or of eukaryotic organelles.

  6. Estimation of tephra volumes from sparse and incompletely observed deposit thicknesses

    Science.gov (United States)

    Green, Rebecca M.; Bebbington, Mark S.; Jones, Geoff; Cronin, Shane J.; Turner, Michael B.

    2016-04-01

    We present a Bayesian statistical approach to estimate volumes for a series of eruptions from an assemblage of sparse proximal and distal tephra (volcanic ash) deposits. Most volume estimates are of widespread tephra deposits from large events using isopach maps constructed from observations at exposed locations. Instead, we incorporate raw thickness measurements, focussing on tephra thickness data from cores extracted from lake sediments and through swamp deposits. This facilitates investigation into the dispersal pattern and volume of tephra from much smaller eruption events. Given the general scarcity of data and the physical phenomena governing tephra thickness attenuation, a hybrid Bayesian-empirical tephra attenuation model is required. Point thickness observations are modeled as a function of the distance and angular direction of each location. The dispersal of tephra from larger well-estimated eruptions are used as leverage for understanding the smaller unknown events, and uncertainty in thickness measurements can be properly accounted for. The model estimates the wind and site-specific effects on the tephra deposits in addition to volumes. Our technique is exemplified on a series of tephra deposits from Mt Taranaki (New Zealand). The resulting estimates provide a comprehensive record suitable for supporting hazard models. Posterior mean volume estimates range from 0.02 to 0.26 km 3. Preliminary examination of the results suggests a size-predictable relationship.

  7. Význam pedagogiky Marie Montessori pro předškolní zařízení

    OpenAIRE

    SOUKUPOVÁ, Štěpánka

    2012-01-01

    The main areas covered in this thesis include Maria Montessori´s pedagogy, its historical development, its use in the Czech educational system and its benefits for children of pre-school age. The text describes the most important elements and principles of Maria Montessori´s pedagogy and includes a comparison of daily routine in classical pre-primary schools and Montessori centres. The practical part presents results of a research focused on the use of Maria Montessori´s pedagogy in today´s f...

  8. A randomized crossover trial to study the effect of personalized, one-to-one interaction using Montessori-based activities on agitation, affect, and engagement in nursing home residents with Dementia.

    Science.gov (United States)

    van der Ploeg, Eva S; Eppingstall, Barbara; Camp, Cameron J; Runci, Susannah J; Taffe, John; O'Connor, Daniel W

    2013-04-01

    Increasingly more attention has been paid to non-pharmacological interventions as treatment of agitated behaviors that accompany dementia. The aim of the current study is to test if personalized one-to-one interaction activities based on Montessori principles will improve agitation, affect, and engagement more than a relevant control condition. We conducted a randomized crossover trial in nine residential facilities in metropolitan Melbourne, Australia (n = 44). Personalized one-to-one activities that were delivered using Montessori principles were compared with a non-personalized activity to control for the non-specific benefits of one-to-one interaction. Participants were observed 30 minutes before, during, and after the sessions. The presence or absence of a selected physically non-aggressive behavior was noted in every minute, together with the predominant type of affect and engagement. Behavior counts fell considerably during both the Montessori and control sessions relative to beforehand. During Montessori activities, the amount of time spend actively engaged was double compared to during the control condition and participants displayed more positive affect and interest as well. Participants with no fluency in English (all from non-English speaking backgrounds) showed a significantly larger reduction in agitation during the Montessori than control sessions. Our results show that even non-personalized social contact can assist in settling agitated residents. Tailoring activities to residents' needs and capabilities elicit more positive interactions and are especially suitable for people who have lost fluency in the language spoken predominantly in their residential facility. Future studies could explore implementation by family members and volunteers to avoid demands on facilities' resources. Australian New Zealand Clinical Trials Registry - ACTRN12609000564257.

  9. Objectively measured sedentary behavior in preschool children: comparison between Montessori and traditional preschools

    Directory of Open Access Journals (Sweden)

    Byun Wonwoo

    2013-01-01

    Full Text Available Abstract Background This study aimed to compare the levels of objectively-measured sedentary behavior in children attending Montessori preschools with those attending traditional preschools. Methods The participants in this study were preschool children aged 4 years old who were enrolled in Montessori and traditional preschools. The preschool children wore ActiGraph accelerometers. Accelerometers were initialized using 15-second intervals and sedentary behavior was defined as Results Children attending Montessori preschools spent less time in sedentary behavior than those attending traditional preschools during the in-school (44.4. min/hr vs. 47.1 min/hr, P = 0.03, after-school (42.8. min/hr vs. 44.7 min/hr, P = 0.04, and total-day (43.7 min/hr vs. 45.5 min/hr, P = 0. 009 periods. School type (Montessori or traditional, preschool setting (private or public, socio-demographic factors (age, gender, and socioeconomic status were found to be significant predictors of preschoolers’ sedentary behavior. Conclusions Levels of objectively-measured sedentary behavior were significantly lower among children attending Montessori preschools compared to children attending traditional preschools. Future research should examine the specific characteristics of Montessori preschools that predict the lower levels of sedentary behavior among children attending these preschools compared to children attending traditional preschools.

  10. Examining a Public Montessori School’s Response to the Pressures of High-Stakes Accountability

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    Corrie Rebecca Block

    2015-11-01

    Full Text Available In order to succeed in the current school assessment and accountability era, a public Montessori school is expected to achieve high student scores on standardized assessments. A problem for a public Montessori elementary school is how to make sense of the school’s high-stakes assessment scores in terms of its unique educational approach. This case study examined a public Montessori elementary school’s efforts as the school implemented the Montessori Method within the accountability era. The research revealed the ways the principal, teachers, and parents on the school council modified Montessori practices, curriculum, and assessment procedures based on test scores. A quality Montessori education is designed to offer children opportunities to develop both cognitive skills and affective components such as student motivation and socio-emotional skills that will serve them beyond their public school experiences. Sadly, the high-stakes testing environment influences so much of public education today. When quality education was measured through only one narrow measure of success the result in this school was clearly a restriction of priorities to areas that were easily assessed.

  11. Saline volume expansion and cardiovascular physiology: novel observations, old explanations, and new questions.

    Science.gov (United States)

    Robotham, James L

    2004-10-01

    In a clinical investigation, Kumar and coworkers reported the hemodynamic events that accompany plasma volume expansion over 3 hours in healthy adult volunteers, and found that increases in stroke volume (SV) may be related to increases in left ventricular (LV)/right ventricular (RV) end-diastolic volume, as they expected, but also to decreases in LV/RV end-systolic volume. The latter finding suggests increased contractility and/or decreased afterload, which do not fit with their perception that clinicians ascribe increases in SV to increases in end-diastolic volume based on Starling's work. Increased ejection fraction and decreased vascular resistances were also observed. The same authors recently reported novel data suggesting that reduced blood viscosity may account for the observed reduction in vascular resistances with saline volume expansion. However, the variances in preload and afterload, along with uncertainty in estimates of contractility, substantially limit their ability to define a primary mechanism to explain decreases in LV end-systolic volume. A focus on using ejection fraction to evaluate the integrated performance of the cardiovascular system is provided to broaden this analytic perspective. Sagawa and colleagues described an approach to estimate the relationship, under clinical conditions, between ventricular and arterial bed elastances (i.e. maximal ventricular systolic elastance [Emax] and maximal arterial systolic elastance [Ea]), reflecting ventricular-arterial coupling. I used the mean data provided in one of the reports from Kumar and coworkers to calculate that LV Emax decreased from 1.09 to 0.96 mmHg/ml with saline volume expansion, while Ea decreased from 1.1 to 0.97 mmHg/ml and the SV increased (i.e. the increase in mean SV was associated with a decrease in mean afterload while the mean contractility decreased). The results reported by Kumar and coworkers invite further studies in normal and critically ill patients during acute saline

  12. Da Ellen Key a Maria Montessori: la progettazione di nuovi spazi educativi per l’infanzia

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    Tiziana Pironi

    2010-02-01

    Full Text Available In questa prima fase della ricerca - ancora in itinere - si compie un’analisi storico-pedagogica del rapporto infanzia/famiglie/istituzioni. L’indagine si focalizza sulle trasformazioni dei modelli familiari, visti nella loro interdipendenza con l’elaborazione di nuove pratiche educative. Al riguardo, l’avvento del’900 si profila come un passaggio importante, che trova un suo esito nel volume di Ellen Key, Il secolo dei fanciulli. Proprio in quest’opera, la scrittrice svedese elabora una nuova idea di “maternità” e di “paternità” che pone al centro i bisogni e le esigenze infantili. La sua prospettiva diventa oggetto di dibattito, agli inizi del secolo scorso, sia in campo pedagogico, sia in campo femminista, soprattutto in merito al dilemma per la donna di coniugare insieme sfera pubblica e sfera privata, maternità e autonomia individuale. Secondo l’ipotesi qui evidenziata è in particolare Maria Montessori a raccogliere la sfida di Ellen Key, con il suo esperimento pedagogico della “Casa dei bambini”, in cui lo spazio domestico, “privato” si trasforma in uno spazio scolastico, “pubblico”, a misura di “bambino” (valenza estetica degli ambienti, cura delle relazioni umane, ecc..

  13. Using spaced retrieval and Montessori-based activities in improving eating ability for residents with dementia.

    Science.gov (United States)

    Lin, Li-Chan; Huang, Ya-Ju; Su, Su-Gen; Watson, Roger; Tsai, Belina W-J; Wu, Shiao-Chi

    2010-10-01

    To construct a training protocol for spaced retrieval (SR) and to investigate the effectiveness of SR and Montessori-based activities in decreasing eating difficulty in older residents with dementia. A single evaluator, blind, and randomized control trial was used. Eighty-five residents with dementia were chosen from three special care units for residents with dementia in long-term care facilities in Taiwan. To avoid any confounding of subjects, the three institutions were randomized into three groups: spaced retrieval, Montessori-based activities, and a control group. The invention consisted of three 30-40 min sessions per week, for 8 weeks. After receiving the intervention, the Edinburgh Feeding Evaluation in Dementia (EdFED) scores and assisted feeding scores for the SR and Montessori-based activity groups were significantly lower than that of the control group. However, the frequencies of physical assistance and verbal assistance for the Montessori-based activity group after intervention were significantly higher than that of the control group, which suggests that residents who received Montessori-based activity need more physical and verbal assistance during mealtimes. In terms of the effects of nutritional status after intervention, Mini-Nutritional Assessment (MNA) in the SR group was significantly higher than that of the control group. This study confirms the efficacy of SR and Montessori-based activities for eating difficulty and eating ability. A longitudinal study to follow the long-term effects of SR and Montessori-based activities on eating ability and nutritional status is recommended. Copyright © 2010 John Wiley & Sons, Ltd.

  14. Racial Discipline Disproportionality in Montessori and Traditional Public Schools: A Comparative Study Using the Relative Rate Index

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    Katie E. Brown

    2015-11-01

    Full Text Available Research from the past 40 years indicates that African American students are subjected to exclusionary discipline, including suspension and expulsion, at rates two to three times higher than their White peers (Children’s Defense Fund, 1975; Skiba, Michael, Nardo, & Peterson, 2002. Although this phenomenon has been studied extensively in traditional public schools, rates of racially disproportionate discipline in public Montessori schools have not been examined. The purpose of this study is to examine racial discipline disproportionality in Montessori public elementary schools as compared to traditional elementary schools. The Relative Rate Index (RRI is used as a measure of racially disproportionate use of out-of-school suspensions (Tobin & Vincent, 2011. Suspension data from the Office of Civil Rights Data Collection was used to generate RRIs for Montessori and traditional elementary schools in a large urban district in the Southeast. While statistically significant levels of racial discipline disproportionality are found in both the Montessori and traditional schools, the effect is substantially less pronounced in Montessori settings. These findings suggest that Montessori schools are not immune to racially disproportionate discipline and should work to incorporate more culturally responsive classroom management techniques. Conversely, the lower levels of racially disproportionate discipline in the Montessori schools suggests that further study of discipline in Montessori environments may provide lessons for traditional schools to promote equitable discipline.

  15. Precise determination of universal finite volume observables in the Gross-Neveu model

    Energy Technology Data Exchange (ETDEWEB)

    Korzec, T.

    2007-01-26

    The Gross-Neveu model is a quantum field theory in two space time dimensions that shares many features with quantum chromo dynamics. In this thesis the continuum model and its discretized versions are reviewed and a finite volume renormalization scheme is introduced and tested. Calculations in the limit of infinitely many fermion flavors as well as perturbative computations are carried out. In extensive Monte-Carlo simulations of the one flavor and the four flavor lattice models with Wilson fermions a set of universal finite volume observables is calculated to a high precision. In the one flavor model which is equivalent to the massless Thirring model the continuum extrapolated Monte-Carlo results are confronted with an exact solution of the model. (orig.)

  16. Assessment of capabilities in persons with advanced stage of dementia: Validation of The Montessori Assessment System (MAS).

    Science.gov (United States)

    Erkes, Jérôme; Camp, Cameron J; Raffard, Stéphane; Gély-Nargeot And, Marie-Christine; Bayard, Sophie

    2017-01-01

    This study evaluated the validity and reliability of the Montessori Assessment System. The Montessori Assessment System assesses preserved abilities in persons with moderate to severe dementia. In this respect, this instrument provides crucial information for the development of effective person-centered care plans. A total of 196 persons with a diagnosis of dementia in the moderate to severe stages of dementia were recruited in 10 long-term care facilities in France. All participants completed the Montessori Assessment System, the Clinical Dementia Rating Scale and/or the Mini Mental State Examination and the Severe Impairment Battery-short form. The internal consistency and temporal stability of the Montessori Assessment System were high. Additionally, good construct and divergent validity were demonstrated. Factor analysis showed a one-factor structure. The Montessori Assessment System demonstrated satisfactory psychometric properties while being a useful instrument to assess capabilities in persons with advanced stages of dementia and hence to develop person-centered plans of care.

  17. Método de Montessori aplicado à demência: revisão da literatura Método Montessori aplicado a la demencia: revisión de la literatura Montessori Method applied to dementia: literature review

    Directory of Open Access Journals (Sweden)

    Daniela Filipa Soares Brandão

    2012-06-01

    Full Text Available O método de Montessori foi aplicado inicialmente às crianças, mas atualmente aplica-se a pessoas com demência. O objetivo deste trabalho é fazer uma revisão sistemática da investigação sobre a eficácia desse método, utilizando a Medical Literature Analysis and Retrieval System Online (Medline com as palavras-chave demência e método de Montessori. Foram selecionados 10 estudos, onde se verificam melhorias significativas na participação e no envolvimento construtivo e diminuição dos afectos negativos e do envolvimento passivo. Não obstante, as revisões da literatura acerca desta intervenção não farmacológica em demência classificam esse método como fraco, em termos de eficácia. Essa aparente discrepância pode explicar-se porque o método de Montessori pode ter, de fato, uma influência pouco significativa em dimensões como a dos problemas comportamentais ou porque não existe investigação acerca desse método com elevados níveis de controle como são a presença de vários grupos de controle ou o duplo-cego.El método Montessori se aplicó inicialmente a los niños, pero ahora se aplica a las personas con demencia. El propósito de este estudio es revisar de forma sistemática la investigación sobre la eficacia de este método, utilizando Medical Literature Analysis and Retrieval System Online (Medline con las palabras clave demencia y método Montessori. Se seleccionaron 10 estudios, que tienen mejoras significativas en la participación y en el compromiso constructivo, y la reducción de efectos negativos y de la participación pasiva. Sin embargo, la revisión de la literatura sobre esta intervención no farmacológica en la demencia clasifica este método como débil en términos de eficacia. Esta aparente discrepancia puede explicarse porque el método Montessori puede tener una influencia poco significativa en los problemas de conducta, o porque no hay investigación sobre este método con altos niveles de

  18. La evaluación docente en la pedagogía Montessori: propuesta de un instrumento A avaliação docente na pedagogia Montessori: proposta de um instrumento Teacher Evaluation in Montessori Education: A Proposed Tool

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    Ana María Mendoza-Páez

    2008-06-01

    Full Text Available El objetivo del presente estudio fue el diseño, la construcción y la validación del contenido de un instrumento que permita evaluar el desempeño docente en un colegio con metodología Montessori. Dicho instrumento se validó a través del método de jueces expertos en relación con la pertinencia, coherencia y redacción de cada ítem (participaron tres jueces; la fiabilidad de los jueces se obtuvo a través del coeficiente de concordancia o índice kappa, el cual puntuó alto (total acuerdo. Conforme a los resultados se eliminaron 27 ítems de los 102 propuestos, y quedaron 75 en el instrumento de aplicación. El instrumento contiene las dimensiones del ser, saber, saber hacer y saber comprender del docente. Posteriormente se hizo una aplicación piloto a los 30 participantes, los cuales pertenecen al colegio Montessori British School, institución que utiliza como pedagogía el método Montessori. En el análisis de la consistencia interna, obtenida por los índices alfa de Cronbach, estos fueron altos en todas las dimensiones evaluadas (promedio .88.Neste artigo, o objetivo foi desenhar, construir e validar o contido de um instrumento que permita avaliar o desempenho docente em uma escola com pedagogia Montessori. Esse instrumento foi validado pelo método de juízes expertos em quanto pertinência, coerência e redação de cada item (participaram três juízes. A fiabilidade dos juízes foi lograda mediante o coeficiente de concordância ou índice de kappa, o qual pontuou alto (acordo total. Seguindo os resultados, foram eliminados 27 itens dos 102 propostos. Os outros 75 permaneceram no instrumento de aplicação. O instrumento contem as dimensões do ser, saber, saber fazer e saber compreender do docente. Depois foi feita uma aplicação piloto aos 30 participantes, pertencentes à escola Montessori British School, instituição que emprega o método Montessori. Na análise da consistência interna, obtida mediante os índices alfa

  19. An Improved Multivariate T2 Control Chart for Individual Observations in Low Volume Manufacturing

    Institute of Scientific and Technical Information of China (English)

    Miao Rui(苗瑞); Wang Dongpeng; Yao Yingxue

    2004-01-01

    For multivariate statistical process quality control with individual observations, the usually recommended procedure is Hotelling's T2 control chart. Using the T2 statistic based on β distribution is an exact method for constructing multivariate control limits in low volume manufacturing, but it is not convenient in that the variation of sample size leads to a change in control limit. This paper presents an improved multivariate T2 control chart whose control limit does not change with sample size, which is especially useful when the sample size is small.

  20. Ugdymo vientisumas M. Montessori darželyje ir šeimoje

    OpenAIRE

    Červiakova, Vida

    2011-01-01

    Šiame darbe buvo siekiama ištirti ugdymo vientisumo M. Montessori darželyje ir šeimoje ypatumus teoriniu bei praktiniu aspektais. Siekiant šio tikslo pirmiausia atskleista M. Montessori pedagoginės sistemos samprata, apibrėžiamos ugdymo metodų vientisumo apraiškos šeimoje ir darželyje, išskiriamos ugdymo vientisumo įgyvendinimo problemos. Analizuojant, kaip pedagogai ir tėvai suvokia M. Montessori sistemą, koks pedagogų ir tėvų požiūris į vaiką, taip pat lyginant vaiko aplinką, vaiko veiklos ...

  1. The Intelligent Search: Some Considerations on the Mon-tessori Method

    Directory of Open Access Journals (Sweden)

    Rossella Certini

    2013-01-01

    Full Text Available The author, on the assumption that «the Montessori “method” still today arouses much debate», reads some key points of her educational project. At the center of the reflection is, again, the scientific mind of the child, which is the key tool to learn how-experiment with the many dimensions of life. The Montessori method is still widely used in many parts of the world for its principles of democracy and active experience and the author explores some of the motivations behind these choices.

  2. Escuela integral de desarrollo de liderazgo (EIDL) para el colegio Montessori

    OpenAIRE

    Velasquez Zapata, Margarita Maria

    2013-01-01

    El propósito de este trabajo es plantear el desarrollo de una escuela de liderazgo para jóvenes preadolescentes y adolescentes del Colegio Montessori, institución de carácter privado, con sede en Medellín. El colegio está centrado en el planteamiento de un proyecto en la temática del liderazgo escolar, a partir del diseño de un programa de desarrollo de liderazgo para jóvenes del Colegio Montessori de Medellín, teniendo en cuenta los elementos conceptuales, procedimentales y estratégicos ...

  3. La progettazione di nuovi spazi educativi per l’infanzia: da Ellen Key a Maria Montessori

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    Tiziana Pironi

    2011-11-01

    Full Text Available The essay presents a comparison between the thought of Ellen Key and that of Maria Montessori. Changes that involved the role of women, caught in its interdependence with the development of new educational practices, were the center of the theoretical contribution of Ellen Key. Maria Montessori believed that only women work outside the home would guarantee the economic independence necessary to form a union on sentiment rather than on utilitarian calculations and therefore she did not seem to share the concerns of the Key on an increasingly massive female entry into the world of work. The paper offers an updated reflection on the work of two scholars of education.

  4. Maria Montessori (1870-1952): Women's emancipation, pedagogy and extra verbal communication.

    Science.gov (United States)

    Cascella, Marco

    2015-05-01

    Maria Montessori is one of the most well-known women in Italian history. Although she was the first woman who graduated in medicine in Italy, she is mostly known as an educator. Her teaching method--the Montessori Method- is still used worldwide--Because she could not speak English during the imprisonment in India, there was a big obstacle for her communication with children. However, the need to adopt a non-verbal communication, led her to a sensational discovery: children use an innate and universal language. This language, made of gestures and mimic, is called extra verbal communication.

  5. What Makes Mathematics Manipulatives Effective? Lessons From Cognitive Science and Montessori Education

    Directory of Open Access Journals (Sweden)

    Elida V. Laski

    2015-06-01

    Full Text Available Manipulatives are ubiquitous in early childhood classrooms; yet, findings regarding their efficacy for learning mathematics concepts are inconsistent. In this article, we present four general principles that have emerged from cognitive science about ways to ensure that manipulatives promote learning when used with young children. We also describe how Montessori instruction offers a concrete example of the application of these principles in practice, which may, in turn, explain the high levels of mathematics achievement among children who attend Montessori programs during early childhood. The general principles and concrete examples presented in this article should help early childhood programs maximize the benefits of using manipulatives for developmentally appropriate mathematics instruction.

  6. Using acupressure and Montessori-based activities to decrease agitation for residents with dementia: a cross-over trial.

    Science.gov (United States)

    Lin, Li-Chan; Yang, Man-Hua; Kao, Chieh-Chun; Wu, Shiao-Chi; Tang, Sai-Hung; Lin, Jaung-Geng

    2009-06-01

    To explore the effectiveness of acupressure and Montessori-based activities in decreasing the agitated behaviors of residents with dementia. A double-blinded, randomized (two treatments and one control; three time periods) cross-over design was used. Six special care units for residents with dementia in long-term care facilities in Taiwan were the sites for the study. One hundred thirty-three institutionalized residents with dementia. Subjects were randomized into three treatment sequences: acupressure-presence-Montessori methods, Montessori methods-acupressure-presence and presence-Montessori methods-acupressure. All treatments were done once a day, 6 days per week, for a 4-week period. The Cohen-Mansfield Agitation Inventory, Ease-of-Care, and the Apparent Affect Rating Scale. After receiving the intervention, the acupressure and Montessori-based-activities groups saw a significant decrease in agitated behaviors, aggressive behaviors, and physically nonaggressive behaviors than the presence group. Additionally, the ease-of-care ratings for the acupressure and Montessori-based-activities groups were significantly better than for the presence group. In terms of apparent affect, positive affect in the Montessori-based-activities group was significantly better than in the presence group. This study confirms that a blending of traditional Chinese medicine and a Western activities program would be useful in elderly care and that in-service training for formal caregivers in the use of these interventions would be beneficial for patients

  7. Does ultrasonographic volume of the thyroid gland correlate with difficult intubation? An observational study

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    Basak Ceyda Meco

    Full Text Available BACKGROUND AND OBJECTIVES: Preoperative ultrasonographic evaluation of the thyroid gland done by surgeons could let us foresee airway management challenges. The aim of this observational study was to evaluate the effects of thyroid-related parameters assessed preoperatively by surgeons via ultrasonography and chest X-ray on intubation conditions. METHODS: Fifty patients undergoing thyroid surgery were enrolled. Thyromental distance, Mallampati score, neck circumference and range of neck movement were evaluated before the operation. Thyroid volume, signs of invasion or compression and tracheal deviation on chest X-ray were also noted. The intubation conditions were assessed with Cormack and Lehane score and the intubation difficulty scale. Statistical analyses were done with SPSS 15.0 software. RESULTS: The mean thyroid volume of the patients was 26.38 ± 14 mL. The median intubation difficulty scale was 1 (0-2. Thyromental distance (p = 0.011; r = 0.36; 95% CI 0.582-0.088, Mallampati score (p = 0.041; r = 0.29; 95% CI 0.013-0.526, compression or invasion signs (p = 0.041; r = 0.28; 95% CI 0.006-0.521 and tracheal deviation on chest X-ray (p = 0.041; r = 0.52; 95% CI 0.268-0.702 were correlated with intubation difficulty scale. Also patients were classified into two groups related to their intubation difficulty scale (Group I, n = 19: intubation difficulty scale = 0; Group II, n = 31: 1 < intubation difficulty scale ≤ 5 and difficult intubation predictors and thyroid-related parameters were compared. Only Mallampati score was significantly different between groups (p = 0.025. CONCLUSION: The thyroid volume is not associated with difficult intubation. However clinical assessment parameters may predict difficult intubation.

  8. Implementing Montessori Methods for Dementia: A Scoping Review.

    Science.gov (United States)

    Hitzig, Sander L; Sheppard, Christine L

    2017-10-01

    A scoping review was conducted to develop an understanding of Montessori-based programing (MBP) approaches used in dementia care and to identify optimal ways to implement these programs across various settings. Six peer-reviewed databases were searched for relevant abstracts by 2 independent reviewers. Included articles and book chapters were those available in English and published by the end of January 2016. Twenty-three articles and 2 book chapters met the inclusion criteria. Four approaches to implementing MBP were identified: (a) staff assisted (n = 14); (b) intergenerational (n = 5); (c) resident assisted (n = 4); and (d) volunteer or family assisted (n = 2). There is a high degree of variability with how MBP was delivered and no clearly established "best practices" or standardized protocol emerged across approaches except for resident-assisted MBP. The findings from this scoping review provide an initial road map on suggestions for implementing MBP across dementia care settings. Irrespective of implementation approach, there are several pragmatic and logistical issues that need to be taken into account for optimal implementation.

  9. Bringing the Montessori Three-Year Multi-Age Group to the Adolescent.

    Science.gov (United States)

    Kahn, David

    2003-01-01

    Describes the benefits of including the ninth grade within the 3-year multi-age group setting within a Montessori farm school. Notes how seventh, eighth, and ninth grades work together in one family cluster, allowing 15-year-olds to avoid the pecking order of the high school freshman year while developing personal leadership, confidence, and a…

  10. Mind over Matter: Contributing Factors to Self-Efficacy in Montessori Teachers

    Science.gov (United States)

    Bhatia, Punum

    2012-01-01

    Interpreting Albert Bandura's term "self-efficacy" as the individual's belief in his own abilities to succeed in spite of the given circumstances, this study seeks to identify the influences which lead to self-efficacy in Montessori teachers. In order to evaluate perceptions of self-efficacy, 35 pre-service teachers in the…

  11. How the Montessori Upper Elementary and Adolescent Environment Naturally Integrates Science, Mathematics, Technology, and the Environment

    Science.gov (United States)

    McNamara, John

    2016-01-01

    John McNamara shares his wisdom and humbly credits Camillo Grazzini, Jenny Höglund, and David Kahn for his growth in Montessori. Recognizing more than what he has learned from his mentors, he shares the lessons he has learned from his students themselves. Math, science, history, and language are so integrated in the curriculum that students…

  12. Theories of Childhood: An Introduction to Dewey, Montessori, Erikson, Piaget & Vygotsky, Second Edition

    Science.gov (United States)

    Mooney, Carol Garhart

    2013-01-01

    This best-selling resource provides clear, straightforward introductions to the foundational theories of John Dewey, Maria Montessori, Erik Erikson, Jean Piaget, and Lev Vygotsky. Each chapter highlights a theorist's work and includes insight on how the theory impacts teaching young children today. Discussion questions and suggested readings are…

  13. Helping Children with Attentional Challenges in a Montessori Classroom: The Role of the Occupational Therapist

    Science.gov (United States)

    Luborsky, Barbara

    2017-01-01

    Barbabra Luborsky links the medical field and Montessori pedagogy to address atypical attention in children through the lens of the occupational therapist. She provides an overview of attention and sensory processing disorders and then informs about particular diagnoses, particularly ADHD and its comorbidity with other diagnoses. Her specific…

  14. The Epistemology behind the Educational Philosophy of Montessori: Senses, Concepts, and Choice

    Science.gov (United States)

    Colgan, Andrew D.

    2016-01-01

    This article seeks to re-introduce Dr. Maria Montessori's educational philosophy, which has been absent from modern philosophy of education literature. It describes and analyzes crucial aspects of her epistemology, as best known through her "Method." Discussed are the need for early education, the development of the senses, and the…

  15. Un-"Chartered" Waters: Balancing Montessori Curriculum and Accountability Measures in a Charter School

    Science.gov (United States)

    Scott, Catherine M.

    2017-01-01

    More than 6,000 charter schools exist in the United States, and of these 120 are Montessori charter schools. When studying charter school practices, researchers often examine issues such as performance accountability measures and effectiveness of charter school curricula. In doing so, the outcomes often overlook the challenges for teachers as they…

  16. The Effects of Music Instruction on Learning in the Montessori Classroom

    Science.gov (United States)

    Harris, Maureen

    2008-01-01

    The value of music in educating the young child is not being recognized, particularly in the area of mathematics. Despite the amount of literature available regarding the effects of music instruction on academic achievement, little has been written on different Montessori music pedagogies and their effects on students' math scores. This article…

  17. Longitudinal Academic Achievement Outcomes: Modeling the Growth Trajectories of Montessori Elementary Public School Students

    Science.gov (United States)

    Mallett, Jan Davis

    2014-01-01

    Elementary education has theoretical underpinnings based on cognitive psychology. Ideas from cognitive psychologists such as James, Dewey, Piaget, and Vygotsky coalesce to form constructivism (Cooper, 1993; Yager, 2000; Yilmaz, 2011). Among others, the Montessori Method (1912/1964) is an exemplar of constructivism. Currently, public education in…

  18. The Effect of Steiner, Montessori, and National Curriculum Education upon Children's Pretence and Creativity

    Science.gov (United States)

    Kirkham, Julie Ann; Kidd, Evan

    2017-01-01

    Pretence and creativity are often regarded as ubiquitous characteristics of childhood, yet not all education systems value or promote these attributes to the same extent. Different pedagogies and practices are evident within the UK National Curriculum, Steiner and Montessori schools. In this study, 20 children participated from each of these…

  19. María Montessori y la educación cósmica

    Directory of Open Access Journals (Sweden)

    Juan José Morales Ruiz

    2015-01-01

    Full Text Available La etapa de Montessori en la India fue uno de los periodos más enriquecedores en la vida de MariaMontessori. Allí escribió y publicó La Mente Absorbente del niño, y una serie de libros fundamentales. En suobra La educación de las potencialidades humanas desarrolló los principios de la “Educación Cósmica” queadaptó para el currículo de Primaria. Invitada en 1939 a dar unas conferencias en la India por el Presidente dela Sociedad Teosófica, Montessori y su hijo, se vieron atrapados por el estallido de la Segunda GuerraMundial, y su posterior desarrollo. Tenía 69 años cuando llegó a Madrás. Permaneció diez años. Pero nadasería igual que antes. Había una Montessori antes de la India, y otra mucho más profunda después. Cuandoregresaba a Europa declaró, a los que le preguntaban qué había hecho en la India: “creo que he aprendido aaprender, como el Niño”.

  20. John McDermott and the Road to Montessori Public Schools

    Science.gov (United States)

    Povell, Phyllis

    2014-01-01

    In this article, the author states that, for over 45 years, she has explored the issues of leadership and change, and, along the way, she has examined how diversity fits in with these ideas. She states that she found all three of these concepts embodied in the person of John McDermott, a leader in the American Montessori movement in the United…

  1. Opportunities for Inquiry Science in Montessori Classrooms: Learning from a Culture of Interest, Communication, and Explanation

    Science.gov (United States)

    Rinke, Carol R.; Gimbel, Steven J.; Haskell, Sophie

    2013-01-01

    Although classroom inquiry is the primary pedagogy of science education, it has often been difficult to implement within conventional classroom cultures. This study turned to the alternatively structured Montessori learning environment to better understand the ways in which it fosters the essential elements of classroom inquiry, as defined by…

  2. Theories of Childhood: An Introduction to Dewey, Montessori, Erikson, Piaget & Vygotsky, Second Edition

    Science.gov (United States)

    Mooney, Carol Garhart

    2013-01-01

    This best-selling resource provides clear, straightforward introductions to the foundational theories of John Dewey, Maria Montessori, Erik Erikson, Jean Piaget, and Lev Vygotsky. Each chapter highlights a theorist's work and includes insight on how the theory impacts teaching young children today. Discussion questions and suggested readings are…

  3. The Effects of Music Instruction on Learning in the Montessori Classroom

    Science.gov (United States)

    Harris, Maureen

    2008-01-01

    The value of music in educating the young child is not being recognized, particularly in the area of mathematics. Despite the amount of literature available regarding the effects of music instruction on academic achievement, little has been written on different Montessori music pedagogies and their effects on students' math scores. This article…

  4. Un-"Chartered" Waters: Balancing Montessori Curriculum and Accountability Measures in a Charter School

    Science.gov (United States)

    Scott, Catherine M.

    2017-01-01

    More than 6,000 charter schools exist in the United States, and of these 120 are Montessori charter schools. When studying charter school practices, researchers often examine issues such as performance accountability measures and effectiveness of charter school curricula. In doing so, the outcomes often overlook the challenges for teachers as they…

  5. John McDermott and the Road to Montessori Public Schools

    Science.gov (United States)

    Povell, Phyllis

    2014-01-01

    In this article, the author states that, for over 45 years, she has explored the issues of leadership and change, and, along the way, she has examined how diversity fits in with these ideas. She states that she found all three of these concepts embodied in the person of John McDermott, a leader in the American Montessori movement in the United…

  6. Longitudinal Academic Achievement Outcomes: Modeling the Growth Trajectories of Montessori Elementary Public School Students

    Science.gov (United States)

    Mallett, Jan Davis

    2014-01-01

    Elementary education has theoretical underpinnings based on cognitive psychology. Ideas from cognitive psychologists such as James, Dewey, Piaget, and Vygotsky coalesce to form constructivism (Cooper, 1993; Yager, 2000; Yilmaz, 2011). Among others, the Montessori Method (1912/1964) is an exemplar of constructivism. Currently, public education in…

  7. Opportunities for Inquiry Science in Montessori Classrooms: Learning from a Culture of Interest, Communication, and Explanation

    Science.gov (United States)

    Rinke, Carol R.; Gimbel, Steven J.; Haskell, Sophie

    2013-01-01

    Although classroom inquiry is the primary pedagogy of science education, it has often been difficult to implement within conventional classroom cultures. This study turned to the alternatively structured Montessori learning environment to better understand the ways in which it fosters the essential elements of classroom inquiry, as defined by…

  8. "We Had to Be Sneaky!" Powerful Glimpses into Imaginary Expression in Montessori Classrooms

    Science.gov (United States)

    Soundy, Cathleen S.

    2010-01-01

    This study examines life in a Montessori classroom, with special attention focused on spontaneous episodes of imaginary play. The goal is to better understand what is going on when children engage in imaginary play and how this play assists young learners in their development. This article examines three play episodes, each from a different area…

  9. A New Model for Service Projects: Bringing Power up Gambia to Wilmington Montessori

    Science.gov (United States)

    Scott, Susan Hanway; Zankowsky, Linda

    2009-01-01

    Maria Montessori understood that, innately, children feel connected to humanity, and recognized that children appreciate opportunities to serve others. This is an important connection that parents and teachers need to continue to nourish in students, providing opportunities for those meaningful connections. But what if, in addition to feeling good…

  10. Using the Montessori Approach for a Clientele with Cognitive Impairments: A Quasi-Experimental Study Design

    Science.gov (United States)

    Giroux, Dominique; Robichaud, Line; Paradis, Martin

    2010-01-01

    Background: The choice of activities responding to the needs of people with moderate to severe dementia is a growing concern for care providers trying to target the need for a feeling of self-accomplishment by adapting activities to the abilities of elderly patients. The activities created by Maria Montessori seem to be adaptable to this…

  11. Non-stationarity of solute travel time distribution observed in a controlled hydrologic transport volume

    Science.gov (United States)

    Queloz, P.; Bertuzzo, E.; Carraro, L.; Botter, G.; Miglietta, F.; Rao, P. S.; Rinaldo, A.

    2014-12-01

    Experimental data were collected over a year-long period in a transport experiment carried out within a controlled transport volume (represented by a 2m-deep, 1m-diameter lysimeter fitted with bottom drainage). The soil surface was shielded from natural rainfall, replaced by an artificial injection (Poisson process) at the daily timescale. Bottom drainage out-flows were continuously monitored with leakage tipping bucket and evapotranspiration (prompted by a willow tree growing within the system) was measured trough precision load cells, which also allow an accurate and continuous reading of the total water storage. Five artificial soluble tracers (species of fluorobenzoic acid, FBAs, mutually passive) were selected based on low-reactivity and low-retardation in our specific soil and used to individually mark five rainfall inputs of different amplitudes and occurring at various initial soil moisture conditions. Tracer discharge concentration and hydrologic fluxes measurements provide a direct method for the assessment of the bulk effects of transport on the (backward and forward) travel time distributions in the hydrological setting. The large discrepancies observed in terms of mass recovery in the discharge (supported by ex post FBAs quantification in the soil and in the vegetation) and tracer out-fluxes dynamics emphasized the dependence of the forward travel time on the various injection times and the stages experienced by the system during the migration of the pulse. Rescaling the measured travel time distribution by using the cumulative drainage volume as an independent variable instead of the time elapsed since the injection also fails to yield to stationary distributions, as it was argued by Niemi (1997). Our experimental results support earlier theoretical speculations centered on the key role of non-stationarity on the characterization of the properties of hydrologic flow and transport phenomena. A travel time based model, with all in- and out- hydrological

  12. Noninvasive in vivo plasma volume and hematocrit in humans: observing long-term baseline behavior to establish homeostasis for intravascular volume and composition

    Science.gov (United States)

    Dent, Paul; Deng, Bin; Goodisman, Jerry; Peterson, Charles M.; Narsipur, Sriram; Chaiken, J.

    2016-04-01

    A new device incorporating a new algorithm and measurement process allows simultaneous noninvasive in vivo monitoring of intravascular plasma volume and red blood cell volume. The purely optical technique involves probing fingertip skin with near infrared laser light and collecting the wavelength shifted light, that is, the inelastic emission (IE) which includes the unresolved Raman and fluorescence, and the un-shifted emission, that is, the elastic emission (EE) which includes both the Rayleigh and Mie scattered light. Our excitation and detection geometry is designed so that from these two simultaneous measurements we can calculate two parameters within the single scattering regime using radiation transfer theory, the intravascular plasma volume fraction and the red blood cell volume fraction. Previously calibrated against a gold standard FDA approved device, 2 hour monitoring sessions on three separate occasions over a three week span for a specific, motionless, and mostly sleeping individual produced 3 records containing a total of 5706 paired measurements of hematocrit and plasma volume. The average over the three runs, relative to the initial plasma volume taken as 100%, of the plasma volume±1σ was 97.56+/-0.55 or 0.56%.For the same three runs, the average relative hematocrit (Hct), referenced to an assumed initial value of 28.35 was 29.37+/-0.12 or stable to +/-0.4%.We observe local deterministic circulation effects apparently associated with the pressure applied by the finger probe as well as longer timescale behavior due to normal ebb and flow of internal fluids due to posture changes and tilt table induced gravity gradients.

  13. [The significance of the Montessori method and phenomenon with a particular view to the therapy of the aphasics (author's transl)].

    Science.gov (United States)

    Birchmeier-Nussbaumer, A K

    1980-05-01

    The methods of the Italian physician Maria Montessori influenced the development of modern learning practices. There is general agreement that the Montessori phenomenon is personality forming. Aspects of this method, which are relevant for the rehabilitation of the brain-damaged and, in particular, the aphasics are presented. Possible shifts of emphasis within the relationship therapist - method - patient are analysed. Examples are used to outline in how far an increasingly patient-oriented therapy can influence the development of the aphasic patient.

  14. Greenland ice sheet melt area, volume, and runoff from satellite and in situ observations

    Science.gov (United States)

    van As, D.; Box, J. E.; Fausto, R. S.; Petersen, D.; Citterio, M.; Ahlstrom, A. P.; Andersen, S. B.; Steffen, K.

    2013-12-01

    Remote sensing provides surface melt area and regional mass change. In situ automatic weather station (AWS) data provide a relatively precise, but very local surface mass budget. Combining the two methods allows melt quantification for the entire Greenland ice sheet. We use interpolated near-surface air temperature from the GC-Net and PROMICE AWS networks, and remotely-sensed MODIS surface albedo to calculate melt with a temperature/albedo-index melt model. The calculations make use of albedo, combined with top-of-the-atmosphere solar radiation and cloud cover, to take into account absorbed shortwave radiation, the dominant melt parameter. In so doing the darkening due to the melt-albedo feedback is accounted. Calculated ablation is calibrated using AWS data. Assuming that surface albedo is a first-order indicator of the firn's available pore space and cold content, refreezing is parameterized as a function of it. Meltwater runoff for selected catchments is validated with river discharge data. The product: observation-based daily maps of near-surface air temperature, melt (extent and volume), and runoff for the Greenland ice sheet.

  15. First observation of multiple volume reflection by different planes in one bent silicon crystal for high-energy protons

    CERN Document Server

    Scandale, E; Bagli, E; Baricordi, S; Dalpiaz, P; Fiorini, M; Guidi, V; Mazzolari, A; Vincenzi, D; Milan, R; Della Mea, Gianantonio; Vallazza, E; Afonin, A G; Chesnokov, Yu A; Maisheev, V A; Yazynin, I A; Golovatyuk, V M; Kovalenko, A D; Taratin, A M; Denisov, A S; Gavrikov, Yu A; Ivanov, Yu M; Lapina, L P; Malyarenko, L G; Skorobogatov, V V; Suvorov, V M; Vavilov, S A; Bolognini, D; Hasan, S; Mattera, A; Prest, M; Tikhomirovl, V V

    2009-01-01

    Multiple volume reflection by different planes in a bent silicon crystal with its 111 axis orientation close to the beam direction was observed for the first time for 400 GeV/c protons at the CERN SPS. The proton beam was deflected to the side opposite to the crystal bend by an angle of about 67 μrad, which is five times larger than in a single volume reflection by the (110) bent planes. The registered efficiency of one side deflection was about 84%. It was shown that multiple volume reflection transforms to a single volume reflection when the orientation angle of the 111 axis relative to the beam direction is increased

  16. Inflationary spectra with inverse-volume corrections in loop quantum cosmology and their observational constraints from Planck 2015 data

    CERN Document Server

    Zhu, Tao; Kirsten, Klaus; Cleaver, Gerald; Sheng, Qin; Wu, Qiang

    2015-01-01

    We derive the primordial power spectra, spectral indices and runnings of both cosmological scalar perturbations and gravitational waves in the framework of loop quantum cosmology with the inverse-volume quantum corrections. This represents an extension of our previous treatment for $\\sigma$ being integers to the case with any given value of $\\sigma$. For this purpose, we adopt a new calculational strategy in the uniform asymptotic approximation, by expanding the involved integrals first in terms of the inverse-volume correction parameter to its first-order, a consistent requirement of the approximation of the inverse-volume corrections. In this way, we calculate explicitly the quantum gravitational corrections to the standard inflationary spectra and spectral indices to the second-order of the slow-roll parameters, and obtain the observational constraints on the inverse-volume corrections from Planck 2015 data for various values of $\\sigma$. Using these constraints we discuss whether these quantum gravitation...

  17. Fluorescence enhancement and focal volume reduction observed in c-shaped nano-apertures

    Science.gov (United States)

    Yuen, Yin; Fore, Samantha; Huser, Thomas; Hesselink, Lambertus

    2008-02-01

    We evaluate the potential ability of c-shaped apertures milled in aluminum thin films to reduce the effective measurement volume and to enhance the fluorescence signal for fluorescence correlation spectroscopy of ATTO655 dye dissolved in a HEPES buffer solution. Previous studies have shown that by morphing a square aperture into a rectangular aperture while holding the cross-sectional area constant will yield strong polarization dependence in the reduction of the effective volume and about a factor of 2-3 enhancement in the fluorescence count rate per molecule. By morphing the rectangular aperture into a c-shaped aperture we gain further reduction in focal volume while maintaining the count rate enhancements. In particular, we compare c-shaped apertures to squares with the same cross-sectional area and show that one can achieve one molecule per focal volume at ~3µM (about a 1000 times reduction in effective volume compared to confocal FCS) while maintaining a fluorescence count rate per molecule of about an order of magnitude higher than for bulk diffusing dyes. Two orthogonal polarizations for the incident field have been studied to explore the effects on the focal volume reduction and fluorescence count rate enhancements.

  18. Children’s stories in the educational theories of Ellen Key, Rudolf Steiner and Maria Montessori

    Directory of Open Access Journals (Sweden)

    William Grandi

    2016-11-01

    Full Text Available The article explores the educational value that Ellen Key (1849-1926, Rudolf Steiner (1861-1925 and Maria Montessori (1870-1952 attributed to children's stories. In the late nineteenth and early twentieth century these three important authors contributed to the renewal of the educational theories and practices. They dedicated a part of their pedagogical reflections to the educational meanings of children's stories; consider, e.g., the many pages of Ellen Key on children's literature, the recommendations of Rudolf Steiner on the educational relevance of fairy tales and mythology or, finally, Maria Montessori's reflections on fairy tales. The article examines these ideas from a historical and pedagogical point of view.

  19. Soziales Lernen im Web 2.0, oder: Montessori und das Web?

    Directory of Open Access Journals (Sweden)

    Karlheinz Benke

    2008-04-01

    Full Text Available Soziales Lernen im Web 2.0 mit den reformpädagogischen Bestrebungen von Maria Montessori zusammen zu bringen - ein gewagtes Unterfangen? Möglich … Allerdings lassen sich über die Möglichkeiten des Web 2.0 - um an dieser Stelle nur einen Aspekt herauszugreifen - durchaus Ähnlichkeiten zur ‚vorbereiteten Umgebung' Montessoris erkennen, die die Kompetenzen des Individuums herausfordert, sich selbst am Info- und Wissensvorrat des sozialen wie räumlichen Umfelds zu bedienen. Möglich gemacht wird diese Partizipations- und Austauschmöglichkeit im aktuellen Web jedoch nur, weil (mittlerweile auch die technologischen Bedingungen dazu vorhanden sind, respektive Vorzüge wie Nachteile aus einem breiteren Handlungsspektrum heraus erkannt bzw. nutzbar gemacht werden (können. Die Handwerkszeuge dafür sind uns (mittlerweile auch gut bekannt: Google, YouTube, MySpace, Flickr u. a.

  20. The profile of the Montessori assistant: historical paths and new education projects

    Directory of Open Access Journals (Sweden)

    Barbara De Serio

    2016-07-01

    Full Text Available This paper looks at the professional profile of the Montessori-trained teacher, as educated at the college devised by Maria Montessori and founded in the 1950s by one of her closest pupils, Adele Costa Gnocchi. The Montessori assistant was a professional figure specially trained to aid the birth process and the “mental” needs of the protagonists involved, referring specifically to the child. In this respect, the paper also looks at the subject of education from birth, starting with Montessori’s earliest ideas on new-born children and their creative capabilities. The purpose is to recover the scientific foundations on which the pedagogical practices usually applied by childhood services are based, with the awareness that these consolidated practices need strengthening and a scientific foundation – including on an historical level – in order to contribute to qualifying services for early childhood. Through specific methodological qualification, above all with regard to Montessori’s methods, as well as by placing more valid historical importance on the paths they began, early childhood services may even be able to move in the direction of possible institutionalised training.

  1. Some observations on the origins of large volumes of carbon dioxide accumulations in sedimentary basins

    Energy Technology Data Exchange (ETDEWEB)

    Wycherley, H. [Natural History Museum, London (United Kingdom). Dept. of Mineralogy; Imperial College, London (United Kingdom). TH Huxley School of Environment, Earth Science and Engineering; Fleet, A. [Natural History Museum, London (United Kingdom). Dept. of Mineralogy; Shaw, H. [Imperial College, London (United Kingdom). TH Huxley School of Environment, Earth Science and Engineering

    1999-10-01

    Large volumes of carbon dioxide (i.e. up to 90 v/v%) have been encountered in sedimentary basins from various geological settings but their origins remain enigmatic. Evidence from carbon and noble gas isotope analyses indicate a variety of interpretations for the origins of the CO{sub 2} including mantle degassing, metamorphic reactions or magmatic processes. The formation of large accumulations of large volumes of CO{sub 2} in sedimentary basins is discussed with specific reference to published data from the Pannonian Basin, Hungary; the Cooper-Eromanga Basin, Australia; and the South Viking Graben, North Sea. These basins have occurrences of large volumes (i.e. over 15 v/v%) of isotopically heavy carbon dioxide (thought to be of inorganic origin), and, although they differ somewhat in terms of sedimentary fill, all have major structural features close to the gas accumulations. The available geochemical data are currently neither sufficient to confirm the specific origin(s) of the CO{sub 2} (e.g. mantle-derived. carbonate metamorphism) nor unscramble CO{sub 2} mixed from two or more sources; ongoing studies, especially those involving noble gas analyses, should provide fuller answers. (author)

  2. MONTESSORĠ PEDAGOJĠSĠ VE MONTESSORĠ PEDAGOJĠSĠNĠN ENGELLĠ ÖĞRENCĠLERDEKĠ PRATĠK UYGULAMASI / Montessori Pedagogy and the practice of Montessori-Pedagogy on children with Disabilities

    OpenAIRE

    BOYNİKOĞLU, Fatih

    2013-01-01

    Maria Montessori’nin kendi adıyla anılan eğitim konsepti normal gelişimgösteren çocukların yanında engelli çocukların eğitiminde de başarıylauygulanmaktadır. Bu çalışmada; Montessori-Pedagojisine genel bir bakışyapıldıktan sonra, buna bağlı olarak geliştirilen Montessori-Özel Eğitimi deteorik ve pratik yönüyle açıklanacaktır. Çalışmanın çeşitli kısımlarında MünihÇocuk Merkezi’nde, Montessori-Özel Eğitim...

  3. Observation of Multiple Volume Reflection of Ultrarelativistic Protons by a Sequence of Several Bent Silicon Crystals

    CERN Document Server

    Scandale, Walter; Baricordi, S; Dalpiaz, P; Fiorini, M; Guidi, V; Mazzolari, A; Della Mea, G; Milan, R; Ambrosi, G; Zuccon, P; Bertucci, B; Bürger, W; Duranti, M; Cavoto, G; Santacesaria, R; Valente, P; Luci, C; Iacoangeli, F; Vallazza, E; Afonin, A G; Chesnokov, Yu A; Kotov, V I; Maisheev, V A; Yazynin, I A; Kovalenko, A D; Taratin, A M; Denisov, A S; Gavrikov, Y A; Ivanov, Yu M; Lapina, L P; Malyarenko, L G; Skorogobogatov, V V; Suvorov, V M; Vavilov, S A; Bolognini, D; Hasan, S; Mozzanica, A; Prest, M

    2009-01-01

    The interactions of 400 GeV protons with different sequences of bent silicon crystals have been investigated at the H8 beam line of the CERN Super Proton Synchrotron. The multiple volume reflection of the proton beam has been studied in detail on a five-crystal reflector measuring an angular beam deflection =52.96±0.14 µrad. The efficiency was found larger than 80% for an angular acceptance at the reflector entrance of 70 µrad, with a maximal efficiency value of =0.90±0.01±0.03.

  4. Effect of sessile drop volume on the wetting anisotropy observed on grooved surfaces.

    Science.gov (United States)

    Yang, Jing; Rose, Felicity R A J; Gadegaard, Nikolaj; Alexander, Morgan R

    2009-03-03

    This study reports experimental measurements of the water contact angle (WCA) measured on surfaces with grooves of different widths using drop volumes ranging from 400 pL to 4.5 microL. These measurements were carried out on both relatively hydrophobic and hydrophilic surface chemistry formed using a conformal plasma polymer coating of topographically embossed poly(methyl methacrylate) (PMMA). Anisotropic wetting of the grooved surfaces was found to be more marked for larger drops on both the hydrophilic and hydrophobic surfaces. Above a certain drop base diameter to groove width ratio, topography had no effect on the measured WCA; this ratio was found to be dependent on the water drop volume. The WCA measured from the direction perpendicular to the grooves using submicroliter water drops is found to be a good indicator of the WCA on the flat surface with equivalent wettabilities. To the best of our knowledge, this is the first study on the phenomenon of anisotropic wetting using picoliter water drops.

  5. The Mystery of Pleasure Thoughts on Teaching and learning Sex and Gender Relations in a Democratic Montessori Elementary Environment

    Directory of Open Access Journals (Sweden)

    Matthew Henry R. Rich

    2007-01-01

    Full Text Available Dr Maria Montessori (1870-1952, saw the child as a 'spiritual embryo' naturally gravitating towards a state of 'normalization' through the evolving discovery of a 'cosmic task' that emerged from inquiring into one's identity and role in the universe. Although she laid a philosophical framework for this 'educating of the human potential'; she never openly discussed sexuality and sexual knowledge as a necessary part of this development. Dr Riane Eisler is a contemporary feminist systems theorist whose 'partnership model' of sexual politics embraces (and, in fact, openly endorses the tenets of the Montessori approach.

  6. Task-based Language Learning in Bilingual Montessori Elementary Schools: Customizing Foreign Language Learning and Promoting L2 Speaking Skills

    OpenAIRE

    Jana Winnefeld

    2012-01-01

    Foreign language learning has been a part of German elementary schools for several years now. Montessori schools focusing on individual learning, i.e. mostly independent from the teacher and based on auto-education, interest, and free choice, are also asked to teach an L2. The original lack of a concept of L2 learning for this environment has brought forth different approaches. Bilingual education seems to be feasible and applicable in Montessori education. The downside to this is that even i...

  7. Statistics of MLT wind field values derived from 11 years of common volume specular meteor observations in northern Norway

    Science.gov (United States)

    Chau, Jorge Luis; Stober, Gunter; Laskar, Fazlul; Hall, Chris M.; Tsutsumi, Masaki

    2016-04-01

    Traditionally mean values of the mesosphere and lower thermosphere winds over the radar volume are obtained using monostatic specular meteor radars. Such observing volume consist of a few hundreds of kilometers in radius. Moreover the differences between measured radial velocities and the expected radial velocities from the measured mean winds are used to derive properties of gravity wave momentum fluxes. Recently, Stober and Chau [2015] have proposed to use a multi-static approach to retrieve horizontally resolved wind fields, where most of the radar volume is observed from different viewing angles. Similar results could be obtained if measurements from close-by monostatic systems are combined. In this work we present the results of the derived wind fields from combining specular meteor radar data between 2004 and 2015 from the Trømso (19.22oW, 69.58oN) and Andenes (16.04oW, 69.27oN) radar systems. Among the directly estimated values are the mean winds and the horizontal and vertical gradients of the zonal and meridional winds. Combining the horizontal gradients, the horizontal divergence, relative vorticity, shear and deformation are derived. The seasonal and annual variability of these parameters are presented and discussed, as well as the planetary wave, tidal, and gravity wave information embedded in these new parameters.

  8. Photometric Properties of Six Local Volume Dwarf Galaxies from Deep Near-Infrared Observations

    CERN Document Server

    de Swardt, B; Jerjen, H

    2010-01-01

    We have obtained deep near-infrared $J$- (1.25 $\\mu$m), $H$- (1.65$ \\mu$m) and $K_s$-band (2.15 $\\mu$m) imaging for a sample of six dwarf galaxies ($M_B\\ga-17$ mag) in the Local Volume (LV, $D\\la10$ Mpc). The sample consists mainly of early-type dwarf galaxies found in various environments in the LV. Two galaxies (LEDA 166099 and UGCA 200) in the sample are detected in the near-infrared for the first time. The deep near-infrared images allow for a detailed study of the photometric and structural properties of each galaxy. The surface brightness profiles of the galaxies are detected down to the ~$24 mag arcsec^{-2}$ isophote in the $J$- and $H$-bands, and $23 mag arcsec^{-2}$ in the $K_s$-band. The total magnitudes of the galaxies are derived in the three wavelength bands. For the brightest galaxies ($M_B\\la-15.5$ mag) in the sample, we find that the Two Micron All Sky Survey (2MASS) underestimates the total magnitudes of these systems by up to $\\la0.5$ mag. The radial surface brightness profiles of the galaxi...

  9. Montessori-based training makes a difference for home health workers & their clients.

    Science.gov (United States)

    Gorzelle, Gregg J; Kaiser, Kathy; Camp, Cameron J

    2003-01-01

    Home care visits can last several hours. Home care workers are often at a loss on how to fill time spent in homes of clients. The challenge is how to use this time in ways that are productive and engaging for both clients and home health workers. The authors trained home health aides to implement Montessori-based activities while interacting with clients who have dementia. The results were amazing. Among other positive results, the authors found a statistically significant increase in the amount of pleasure displayed by clients after health workers received training.

  10. Actividade e redenção: a criança nova em Maria Montessori

    OpenAIRE

    Alberto Filipe Araújo, Alessandra Avanzini; Joaquim Machado de Araújo

    2011-01-01

    Resumo A ideia de Criança Nova em Maria Montessori (1870-1952) resulta da confluência de duas perspectivas, a da pedagogia que se pretende afirmar como ciência e a do humanismo cristão. Neste artigo, os autores procuram, numa primeira parte, especificar o que vem a ser para a pedagoga italiana a liberdade e a actividade da criança e o papel do adulto, principalmente do educador da criança que se auto-educa e, numa segunda parte, debruçam-se sobre o fundo religioso e humanista da obra montesso...

  11. Arctic Outflow West Of Greenland: Nine Years Of Volume And Freshwater Transports From Observations In Davis Strait

    Science.gov (United States)

    Curry, B.; Lee, C.; Petrie, B.; Moritz, R. E.; Kwok, R.

    2014-12-01

    Recent Arctic changes suggest alterations in the export of freshwater from the Arctic to the North Atlantic, with conceivable impacts on the Atlantic Meridional Overturning circulation. Approximately 50% of the Arctic outflow exits west of Greenland, traveling through the Canadian Arctic Archipelago (CAA) and into Baffin Bay before crossing Davis Strait. The CAA outflow contributes over 50% of the net southward freshwater outflow through Davis Strait. The remainder is deeper outflow from Baffin Bay, flow from the West Greenland Current and runoff from West Greenland and CAA glaciers. Since September 2004, an observational program in Davis Strait has quantified volume and freshwater transport variability. The year-round program includes velocity, temperature and salinity measurements from 15 moorings spanning the full width (330 km) of the strait accompanied by autonomous Seagliders surveys (average profile separation = 4 km) and autumn ship-based hydrographic sections. Over the shallow Baffin Island and West Greenland shelves, moored instrumentation provides temperature and salinity measurements near the ice-ocean interface. From 2004-2013, the average net volume and liquid freshwater transports are -1.6 ± 0.2 Sv, -94 ± 7 mSv, respectively (salinity referenced to 34.8 and negative indicates southward transport); sea ice contributes an additional -10 ± 1 mSv. Over this period, volume and liquid freshwater transports show significant interannual variability and no clear trends, but a comparison with reanalyzed 1987-90 data indicate a roughly 40% decrease in net southward liquid volume transport and a corresponding an almost 30% decrease in freshwater transport. Connections between the Arctic are also captured, e.g., a unique yearlong Davis Strait freshening event starting September 2009 that was likely driven by an earlier freshening (January 2009 - April/May 2010) in the Canadian Arctic. The Davis Strait autumn 2009 salinity minimum was fresher (by about 0

  12. Some Observations of a Father on the Development of His Daughter

    Science.gov (United States)

    NAMTA Journal, 2016

    2016-01-01

    This father gives some brief observations of his daughter beginning at the time of her entrance into a Montessori school at the age of three years through the age of six. Through his observations and interactions with his daughter, he gains an awareness of the beauty of the work of the child and leaves the reader with a simple yet powerful…

  13. Observations of Recent Arctic Sea Ice Volume Loss and Its Impact on Ocean-Atmosphere Energy Exchange and Ice Production

    Science.gov (United States)

    Kurtz, N. T.; Markus, T.; Farrell, S. L.; Worthen, D. L.; Boisvert, L. N.

    2011-01-01

    Using recently developed techniques we estimate snow and sea ice thickness distributions for the Arctic basin through the combination of freeboard data from the Ice, Cloud, and land Elevation Satellite (ICESat) and a snow depth model. These data are used with meteorological data and a thermodynamic sea ice model to calculate ocean-atmosphere heat exchange and ice volume production during the 2003-2008 fall and winter seasons. The calculated heat fluxes and ice growth rates are in agreement with previous observations over multiyear ice. In this study, we calculate heat fluxes and ice growth rates for the full distribution of ice thicknesses covering the Arctic basin and determine the impact of ice thickness change on the calculated values. Thinning of the sea ice is observed which greatly increases the 2005-2007 fall period ocean-atmosphere heat fluxes compared to those observed in 2003. Although there was also a decline in sea ice thickness for the winter periods, the winter time heat flux was found to be less impacted by the observed changes in ice thickness. A large increase in the net Arctic ocean-atmosphere heat output is also observed in the fall periods due to changes in the areal coverage of sea ice. The anomalously low sea ice coverage in 2007 led to a net ocean-atmosphere heat output approximately 3 times greater than was observed in previous years and suggests that sea ice losses are now playing a role in increasing surface air temperatures in the Arctic.

  14. Improving Outcomes for Refugee Children: A Case Study on the Impact of Montessori Education along the Thai-Burma Border

    Science.gov (United States)

    Tobin, Tierney; Boulmier, Prairie; Zhu, Wenyi; Hancock, Paul; Muennig, Peter

    2015-01-01

    There are 25 million displaced children worldwide, and those receiving schooling are often educated in overcrowded classrooms. Montessori is a child-centred educational method that provides an alternative model to traditional educational approaches. In this model, students are able to direct their own learning and develop at their own pace,…

  15. Making Room for Children's Autonomy: Maria Montessori's Case for Seeing Children's Incapacity for Autonomy as an External Failing

    Science.gov (United States)

    Frierson, Patrick R.

    2016-01-01

    This article draws on Martha Nussbaum's distinction between basic, internal, and external (or combined) capacities to better specify possible locations for children's "incapacity" for autonomy. I then examine Maria Montessori's work on what she calls "normalization", which involves a release of children's capacities for…

  16. Evaluating the Effectiveness of Montessori Reading and Math Instruction for Third Grade African American Students in Urban Elementary Schools

    Science.gov (United States)

    Brown, Katherine Elizabeth

    2016-01-01

    Improving academic achievement for students of color has long been the subject of debate among advocates of education reform (Anyon, 2013; Breitborde & Swiniarski, 2006; Payne, 2008). Some scholars have advocated for the Montessori method as an alternative educational approach to address some chronic problems in public education (Lillard,…

  17. Playing to Learn: An Overview of the Montessori Approach with Pre-School Children with Autism Spectrum Condition

    Science.gov (United States)

    Marks, Laura

    2016-01-01

    This article explores some of the literature concerning the effectiveness of the Montessori educational approach for children with ASC within an English school context. Firstly, there is a discussion, including a short historical review, regarding the ideology of inclusion and how it has impacted upon mainstream education. Also, how this can be…

  18. Evaluating the Effectiveness of Montessori Reading and Math Instruction for Third Grade African American Students in Urban Elementary Schools

    Science.gov (United States)

    Brown, Katherine Elizabeth

    2016-01-01

    Improving academic achievement for students of color has long been the subject of debate among advocates of education reform (Anyon, 2013; Breitborde & Swiniarski, 2006; Payne, 2008). Some scholars have advocated for the Montessori method as an alternative educational approach to address some chronic problems in public education (Lillard,…

  19. Improving Outcomes for Refugee Children: A Case Study on the Impact of Montessori Education along the Thai-Burma Border

    Science.gov (United States)

    Tobin, Tierney; Boulmier, Prairie; Zhu, Wenyi; Hancock, Paul; Muennig, Peter

    2015-01-01

    There are 25 million displaced children worldwide, and those receiving schooling are often educated in overcrowded classrooms. Montessori is a child-centred educational method that provides an alternative model to traditional educational approaches. In this model, students are able to direct their own learning and develop at their own pace,…

  20. Playing to Learn: An Overview of the Montessori Approach with Pre-School Children with Autism Spectrum Condition

    Science.gov (United States)

    Marks, Laura

    2016-01-01

    This article explores some of the literature concerning the effectiveness of the Montessori educational approach for children with ASC within an English school context. Firstly, there is a discussion, including a short historical review, regarding the ideology of inclusion and how it has impacted upon mainstream education. Also, how this can be…

  1. Freedom, Order, and the Child: Self-Control and Mastery of the World Mark the Dynamic Montessori Method

    Science.gov (United States)

    Rambusch, Nancy McCormick

    2010-01-01

    Today, on almost every continent, there are schools adopting in spirit and practice the ideas of Maria Montessori who ranks with Pestalozzi, Froebel, and Dewey in the field of education. Her approach to early childhood education can be linked to the Thomistic dictum that there is nothing in the intellect which is not first in the senses. In this…

  2. Making Room for Children's Autonomy: Maria Montessori's Case for Seeing Children's Incapacity for Autonomy as an External Failing

    Science.gov (United States)

    Frierson, Patrick R.

    2016-01-01

    This article draws on Martha Nussbaum's distinction between basic, internal, and external (or combined) capacities to better specify possible locations for children's "incapacity" for autonomy. I then examine Maria Montessori's work on what she calls "normalization", which involves a release of children's capacities for…

  3. Montessori and Jerome W. Berryman: Work, Play, Religious Education and the Art of Using the Christian Language System

    Science.gov (United States)

    Hyde, Brendan

    2011-01-01

    For more than 30 years, the thinking and writing of Jerome W. Berryman has made a significant and unique contribution to the religious education of children and adults in faith-based contexts. Claiming to be influenced primarily by the work of Maria Montessori, his writings reveal the purpose of religious education to be teaching children the art…

  4. Task-based Language Learning in Bilingual Montessori Elementary Schools: Customizing Foreign Language Learning and Promoting L2 Speaking Skills

    Directory of Open Access Journals (Sweden)

    Jana Winnefeld

    2012-01-01

    Full Text Available Foreign language learning has been a part of German elementary schools for several years now. Montessori schools focusing on individual learning, i.e. mostly independent from the teacher and based on auto-education, interest, and free choice, are also asked to teach an L2. The original lack of a concept of L2 learning for this environment has brought forth different approaches. Bilingual education seems to be feasible and applicable in Montessori education. The downside to this is that even in a bilingual classroom the Montessori way of learning may not allow for very much oral production of the foreign language. The role of L2 production (cf. Swain 1985, 1995, 2005 for language acquisition has been theoretically claimed and empirically investigated. Output can have a positive influence on L2 learning (cf. e.g. Izumi 2002, Keck et al. 2006. This also applies to interaction (cf. Long 1996, where negotiation of meaning and modified output are factors supporting L2 development (cf. e.g. de la Fuente 2002, McDonough 2005. Task-based Language Learning (TBLL presents itself as one way to promote oral language production and to provide opportunities for meaning-negotiation. Especially tasks with required information exchange and a closed outcome have been shown to be beneficial for the elicitation of negotiation of meaning and modified output. This paper argues that TBLL is a promising approach for the facilitation of L2 production and thus the development of speaking skills in a Montessori context. It also hypothesizes that TBLL can be implemented in a bilingual Montessori environment while still making the Montessori way of learning possible. Different tasks on various topics, examples of which are presented in this article, can lay the foundation for this. Offering such tasks in a bilingual Montessori elementary classroom promises to foster language production and the use of communication strategies like negotiation of meaning, both being

  5. Self-discipline Produced Naturally in Montessori Education%自律在蒙氏教育中自然产生

    Institute of Scientific and Technical Information of China (English)

    田艳

    2013-01-01

    论文首先阐述了蒙氏教育中纪律是如何产生的,接着叙述蒙台梭利教育思想是如何培养幼儿的自律能力。文章主要强调幼儿的自律是如何在蒙氏教育中自然产生,重点探讨了如何运用蒙氏教育理论培养幼儿的自律能力。%The paper first expounds the produce of discipline in the Montessori education, then describes how Montessori education thought cultivates children's self-discipline. The article focuses on how the discipline of children naturally produced in the Montessori education, mainly discusses how to use the montessori education theory cultivate children's self-discipline.

  6. Mateřská škola jako životní prostor a dítě předškolního věku v pohledu Marie Montessori

    OpenAIRE

    RODOVÁ, Marcela

    2007-01-01

    The work deals with preschool age and the M. Montessori view of the education. The aim is to point out the contributio24n of montessori materials and their use in nursery schools. The theoretic part describes the historic evolution of preschool education, psychological and sociological development of a child of preschool age, game and alternative programmes. I focused mainly on the M. Montessori pedagogy and described it theoretically. The practical part contains comparison of three chosen sc...

  7. Observations from using models to fit the gas production of varying volume test cells and landfills.

    Science.gov (United States)

    Lamborn, Julia

    2012-12-01

    Landfill operators are looking for more accurate models to predict waste degradation and landfill gas production. The simple microbial growth and decay models, whilst being easy to use, have been shown to be inaccurate. Many of the newer and more complex (component) models are highly parameter hungry and many of the required parameters have not been collected or measured at full-scale landfills. This paper compares the results of using different models (LANDGEM, HBM, and two Monod models developed by the author) to fit the gas production of laboratory scale, field test cell and full-scale landfills and discusses some observations that can be made regarding the scalability of gas generation rates. The comparison of these results show that the fast degradation rate that occurs at laboratory scale is not replicated at field-test cell and full-scale landfills. At small scale, all the models predict a slower rate of gas generation than actually occurs. At field test cell and full-scale a number of models predict a faster gas generation than actually occurs. Areas for future work have been identified, which include investigations into the capture efficiency of gas extraction systems and into the parameter sensitivity and identification of the critical parameters for field-test cell and full-scale landfill predication.

  8. Multi-peak accumulation and coarse modes observed from AERONET retrieved aerosol volume size distribution in Beijing

    Science.gov (United States)

    Zhang, Ying; Li, Zhengqiang; Zhang, Yuhuan; Chen, Yu; Cuesta, Juan; Ma, Yan

    2016-08-01

    We present characteristic peaks of atmospheric columnar aerosol volume size distribution retrieved from the AErosol RObotic NETwork (AERONET) ground-based Sun-sky radiometer observation, and their correlations with aerosol optical properties and meteorological conditions in Beijing over 2013. The results show that the aerosol volume particle size distribution (VPSD) can be decomposed into up to four characteristic peaks, located in accumulation and coarse modes, respectively. The mean center radii of extra peaks in accumulation and coarse modes locate around 0.28 (±0.09) to 0.38 (±0.11) and 1.25 (±0.56) to 1.47 (±0.30) μm, respectively. The multi-peak size distributions are found in different aerosol loading conditions, with the mean aerosol optical depth (440 nm) of 0.58, 0.49, 1.18 and 1.04 for 2-, 3-I/II and 4-peak VPSD types, while the correspondingly mean relative humidity values are 58, 54, 72 and 67 %, respectively. The results also show the significant increase (from 0.25 to 0.40 μm) of the mean extra peak median radius in the accumulation mode for the 3-peak-II cases, which agrees with aerosol hygroscopic growth related to relative humidity and/or cloud or fog processing.

  9. Taste and Smell Disturbances after Brain Irradiation: A Dose Volume Histogram Analysis of a Prospective Observational Study

    Science.gov (United States)

    Leyrer, C. Marc; Chan, Michael D.; Peiffer, Ann M.; Horne, Elizabeth; Harmon, Michelle; Carter, Annette F.; Hinson, William H.; Mirlohi, Susan; Duncan, Susan E.; Dietrich, Andrea M.; Lesser, Glenn J.

    2014-01-01

    Purpose Radiation-induced taste and smell disturbances are prevalent in patients receiving brain radiotherapy, although the mechanisms underlying these toxicities are poorly understood. We report the results of a single institution prospective clinical trial aimed at correlating self-reported taste and smell disturbances with radiation dose delivered to defined areas within the brain and nasopharynx. Methods and Materials 22 patients with gliomas were enrolled on a prospective observational trial in which patients underwent a validated questionnaire assessing taste and smell disturbances at baseline, and at 3 and 6 weeks after commencement of brain radiotherapy. 14 patients with glioblastoma, 3 patients with grade 3 gliomas, and 5 patients with low grade gliomas participated. Median dose to tumor volume was 60 Gy (range 45–60 Gy). Dose volume histogram (DVH) analysis was performed for specific regions of interest (ROI) that were considered potential targets of radiation damage including the thalamus, temporal lobes, nasopharynx, olfactory groove, frontal pole and periventricular stem cell niche. The %v10 (percent of ROI receiving 10 Gy), %v40, and %v60 were calculated for each structure. Data from questionnaires and DVH were analyzed using stepwise regression. Results 20 of 22 patients submitted evaluable questionnaires that encompassed at least the entire radiotherapy course. 10 of 20 patients reported experiencing some degree of smell disturbance during radiotherapy, and 14 of 20 patients experienced taste disturbances. Patients reporting more severe taste toxicity also reported more severe toxicities with sense of smell (r2=0.60, pmore common in temporal lobe tumors, and may be related to the dose received by the nasopharynx. PMID:24890354

  10. Taste and smell disturbances after brain irradiation: a dose-volume histogram analysis of a prospective observational study.

    Science.gov (United States)

    Leyrer, C Marc; Chan, Michael D; Peiffer, Ann M; Horne, Elizabeth; Harmon, Michelle; Carter, Annette F; Hinson, William H; Mirlohi, Susan; Duncan, Susan E; Dietrich, Andrea M; Lesser, Glenn J

    2014-01-01

    Radiation-induced taste and smell disturbances are prevalent in patients receiving brain radiation therapy, although the mechanisms underlying these toxicities are poorly understood. We report the results of a single institution prospective clinical trial aimed at correlating self-reported taste and smell disturbances with radiation dose delivered to defined areas within the brain and nasopharynx. Twenty-two patients with gliomas were enrolled on a prospective observational trial in which patients underwent a validated questionnaire assessing taste and smell disturbances at baseline and at 3 and 6 weeks after commencement of brain radiation therapy. Fourteen patients with glioblastoma, 3 patients with grade 3 gliomas, and 5 patients with low grade gliomas participated. Median dose to tumor volume was 60 Gy (range, 45-60 Gy). Dose-volume histogram (DVH) analysis was performed for specific regions of interest that were considered potential targets of radiation damage, including the thalamus, temporal lobes, nasopharynx, olfactory groove, frontal pole, and periventricular stem cell niche. The %v10 (percent of region of interest receiving 10 Gy), %v40, and %v60 were calculated for each structure. Data from questionnaires and DVH were analyzed using stepwise regression. Twenty of 22 patients submitted evaluable questionnaires that encompassed at least the entire radiation therapy course. Ten of 20 patients reported experiencing some degree of smell disturbance during radiation therapy, and 14 of 20 patients experienced taste disturbances. Patients reporting more severe taste toxicity also reported more severe toxicities with sense of smell (r(2) = 0.60, P more common in temporal lobe tumors, and may be related to the dose received by the nasopharynx. © 2014. Published by Elsevier Inc. All rights reserved.

  11. MONTESSORĠ PEDAGOJĠSĠ VE MONTESSORĠ PEDAGOJĠSĠNĠN ENGELLĠ ÖĞRENCĠLERDEKĠ PRATĠK UYGULAMASI / Montessori Pedagogy and the practice of Montessori-Pedagogy on children with Disabilities

    OpenAIRE

    BOYNİKOĞLU, Fatih

    2013-01-01

    Maria Montessori’nin kendi adıyla anılan eğitim konsepti normal gelişimgösteren çocukların yanında engelli çocukların eğitiminde de başarıylauygulanmaktadır. Bu çalışmada; Montessori-Pedagojisine genel bir bakışyapıldıktan sonra, buna bağlı olarak geliştirilen Montessori-Özel Eğitimi deteorik ve pratik yönüyle açıklanacaktır. Çalışmanın çeşitli kısımlarında MünihÇ...

  12. Il Centro Nascita Montessori. Dal neonato in famiglia al bambino e alla famiglia nel servizio educativo

    Directory of Open Access Journals (Sweden)

    Laura Franceschini

    2010-02-01

    Full Text Available Intervento al Workshop Internazionale “Infanzie e Famiglie in Europa”, del 16 ottobre 2009, presso la Facoltà di Scienze della Formazione, Via Filippo Re, 6 Bologna (Aula Magna. L’intervento illustra i valori fondativi del Centro Nascita Montessori dalle sue origini ai giorni nostri attraverso un percorso che si è allargato nel tempo: dalla focalizzata attenzione e cura al neonato in famiglia o nel brefotrofio fino agli anni ’60 alla cura della crescita del bambino nei servizi educativi e alla cura della relazione con le famiglie dagli anni ‘70 in poi. Tale espansione del campo di interesse e d’indagine operativa ha arricchito il patrimonio di competenze e di conoscenze del C.N.M..

  13. Montessori Public School Pre-K Programs and the School Readiness of Low-Income Black and Latino Children.

    Science.gov (United States)

    Ansari, Arya; Winsler, Adam

    2014-11-01

    Within the United States, there are a variety of early education models and curricula aimed at promoting young children's pre-academic, social, and behavioral skills. This study, using data from the Miami School Readiness Project (MSRP; Winsler et al., 2008, 2012), examined the school readiness gains of low-income Latino (n = 7,045) and Black children (n = 6,700) enrolled in two different types of Title-1 public school pre-K programs: those in programs using the Montessori curricula and those in more conventional programs using the High/Scope curricula with a literacy supplement. Parents and teachers reported on children's socio-emotional and behavioral skills with the Devereux Early Childhood Assessment (DECA), while children's pre-academic skills (cognitive, motor, and language) were assessed directly with the Learning Accomplishment Profile Diagnostic (LAP-D) at the beginning and end of their four-year-old pre-K year. All children, regardless of curricula, demonstrated gains across pre-academic, socio-emotional, and behavioral skills throughout the pre-K year; however, all children did not benefit equally from Montessori programs. Latino children in Montessori programs began the year at most risk in pre-academic and behavioral skills, yet exhibited the greatest gains across these domains and ended the year scoring above national averages. Conversely, Black children exhibited healthy gains in Montessori, but demonstrated slightly greater gains when attending more conventional pre-K programs. Findings have implications for tailoring early childhood education programs for Latino and Black children from low-income communities.

  14. Trends in Personal Belief Exemption Rates Among Alternative Private Schools: Waldorf, Montessori, and Holistic Kindergartens in California, 2000-2014.

    Science.gov (United States)

    Brennan, Julia M; Bednarczyk, Robert A; Richards, Jennifer L; Allen, Kristen E; Warraich, Gohar J; Omer, Saad B

    2017-01-01

    To evaluate trends in rates of personal belief exemptions (PBEs) to immunization requirements for private kindergartens in California that practice alternative educational methods. We used California Department of Public Health data on kindergarten PBE rates from 2000 to 2014 to compare annual average increases in PBE rates between schools. Alternative schools had an average PBE rate of 8.7%, compared with 2.1% among public schools. Waldorf schools had the highest average PBE rate of 45.1%, which was 19 times higher than in public schools (incidence rate ratio = 19.1; 95% confidence interval = 16.4, 22.2). Montessori and holistic schools had the highest average annual increases in PBE rates, slightly higher than Waldorf schools (Montessori: 8.8%; holistic: 7.1%; Waldorf: 3.6%). Waldorf schools had exceptionally high average PBE rates, and Montessori and holistic schools had higher annual increases in PBE rates. Children in these schools may be at higher risk for spreading vaccine-preventable diseases if trends are not reversed.

  15. La función y el papel desempeñado por la maestra en la obra de Montessori - The role and the function of the teacher in Montessori works

    Directory of Open Access Journals (Sweden)

    Alessandra Avanzini

    2011-03-01

    Full Text Available A FUNÇÃO  E O PAPEL DESEMPENHADO PELA PROFESSORA NA OBRA DE MONTESSORI Resumo A função da professora constitui um aspecto fundamental dentro do sistema  teórico  montessoriano.   De   fato,   Montessori  atribui   à professora um papel muito  delicado: facilitar o correto crescimento da criança “pai  do homem”. É  por isto que o papel e a função da professora montessoriana devem responder aos pontos  fortes de sua teoria educativa: a necessidade de que haja uma forte idéia de escola, a necessidade de diferenciar o momento teórico do momento prático e o papel desempenhado pelo desempenho científico da professora; o respeito que ambos devem ter com a criança (nem a professora nem a ciência  podem  fixar  a   priori   os   resultados  de  cada  criança: potencialmente  a   excelência é  para  todos;  o  xeque  a  qualquer pretensão de neutralidade/objetividade: quando a relação é com seres humanos  é  sem  sentido  pensar  que  existam  técnicos  capazes de transmitir conceitos de maneira asséptica. Como dito anteriormente, a professora em  Montessori se pode definir como um  técnico, no sentido de que não é o científico a que lê corresponde a  elaboração teórica  senão  técnico.  Um  técnico  que  não  é  nem  neutro  nem asséptico e cuja humanidade se colocará em um primeiro plano para que possa levar a cabo seu próprio trabalho o melhor possível. Palavras-chave: Montessori; didática; professora.   THE ROLE AND THE FUNCTION  OF THE TEACHER IN MONTESSORI WORKS Abstract The function of the teacher constitutes a fundamental aspect inside Montessori's system of thought. She offers to teacher a very delicate role, that of helping the right growth of child as "man's father". For this reason the  role and the function  of Montessori teacher must correspond to the principle points of her educative theory, that is to say: the necessity to have a

  16. Analysis on Adaptability of Montessori Teaching Method in Ethnic Minority Areas%民族地区实施蒙氏教育的适切性研究

    Institute of Scientific and Technical Information of China (English)

    袁梅

    2014-01-01

    Montessori teaching method has initiated a broad impact in the world since its birth at the begin-ning of 20 century.Although Montessori teaching method was introduced to China only a short time ago, the enthusiasm to promote this method is extremely high and there are already many Montessori kinder-gartens or Montessori classes.T herefore, whether in theoretic or practical level, it is necessary to do a in-depth research on Montessori teaching method so as to promote its wholesome development in China.With the advantages of high quality, the adaptation to multi-culture and the quality of economy, Montessori teaching method is comparatively fit to be carried out in the underdeveloped ethnic minority areas in China.%蒙台梭利教学法自20世纪初诞生至今,在世界范围内产生了广泛的影响。中国引进蒙台梭利教学法的时间虽短,但对蒙氏教学法的推广热情极高,已有众多蒙氏幼儿园或蒙氏班。因此,无论从理论层面还是实践层面,有必要对蒙氏教学法进行深入研究,以推进我国蒙氏教育的健康发展。由于蒙台梭利教育体系所具备的高质性、对多元文化的适应以及经济性等优质特性,因此在我国欠发达民族地区比较适合运用蒙台梭利幼儿教育体系。

  17. Observation

    Science.gov (United States)

    Patell, Hilla

    2016-01-01

    In order to achieve the goal of observation, preparation of the adult, the observer, is necessary. This preparation, says Hilla Patell, requires us to "have an appreciation of the significance of the child's spontaneous activities and a more thorough understanding of the child's needs." She discusses the growth of both the desire to…

  18. Observation

    Science.gov (United States)

    Kripalani, Lakshmi A.

    2016-01-01

    The adult who is inexperienced in the art of observation may, even with the best intentions, react to a child's behavior in a way that hinders instead of helping the child's development. Kripalani outlines the need for training and practice in observation in order to "understand the needs of the children and...to understand how to remove…

  19. Join the Revolution: How Montessori for Aging and Dementia can Change Long-Term Care Culture.

    Science.gov (United States)

    Bourgeois, Michelle S; Brush, Jennifer; Elliot, Gail; Kelly, Anne

    2015-08-01

    Efforts to improve the quality of life of persons with dementia in long-term care through the implementation of various approaches to person-centered care have been underway for the past two decades. Studies have yielded conflicting reports evaluating the evidence for these approaches. The purpose of this article is to outline the findings of several systematic reviews of this literature, highlighting the areas of improvement needs, and to describe a new person-centered care model, DementiAbility Methods: The Montessori Way. This model focuses on the abilities, needs, interests, and strengths of the person and creating worthwhile and meaningful roles, routines, and activities for the person within a supportive physical environment. This is accomplished through gaining the commitment of the facility's leaders, training staff, and monitoring program implementation. The potential for a culture change in long-term care environments is dependent on the development and rigorous evaluation of person-centered care approaches. Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

  20. Actividade e redenção: a criança nova em Maria Montessori

    Directory of Open Access Journals (Sweden)

    Alberto Filipe Araújo, Alessandra Avanzini

    2011-03-01

    Full Text Available Resumo A ideia de Criança Nova em Maria Montessori (1870-1952 resulta da confluência de duas perspectivas, a da pedagogia que se pretende afirmar como ciência e a do humanismo cristão. Neste artigo, os autores procuram, numa primeira parte, especificar o que vem a ser para a pedagoga italiana a liberdade e a actividade da criança e o papel do adulto, principalmente do educador da criança que se auto-educa e, numa segunda parte, debruçam-se sobre o fundo religioso e humanista da obra montessoriana que consagra a criança como um ser espiritual e de natureza divina. Palavras-chave: actividade; activismo; criança nova; redenção.   Abstract The idea of the New Child in Maria Montesori (1870-1952 is the result of the combination of two perspectives: a pedagogical one, directed at affirming its own scientific status, and one based on Christian Humanism. In this paper the authors try to specify what the Italian pedagogue considered as freedom and activity on the part of the child and the role of the adult, most particularly the role of the educator who also ends up educating himself. At a secondary stage they concentrate on the religious background and the humanism of the Montesorian working method which consecrated the child as a spiritual being who shared the divine nature. Keywords: activity; new child; redemption

  1. Resident-Assisted Montessori Programming (RAMP): training persons with dementia to serve as group activity leaders.

    Science.gov (United States)

    Camp, Cameron J; Skrajner, Michael J

    2004-06-01

    The purpose of this study was to determine the effects of an activity implemented by means of Resident-Assisted Montessori Programming (RAMP). Four persons with early-stage dementia were trained to serve as leaders for a small-group activity played by nine persons with more advanced dementia. Assessments of leaders' ability to learn the procedures of leading a group, as well as their satisfaction with this role, were taken, as were measures of players' engagement and affect during standard activities programming and RAMP activities. Leaders demonstrated the potential to fill the role of group activity leader effectively, and they expressed a high level of satisfaction with this role. Players' levels of positive engagement and pleasure during the RAMP activity were higher than during standard group activities. This study suggests that to the extent that procedural learning is available to persons with early-stage dementia, especially when they are assisted with external cueing, these individuals can successfully fill the role of volunteers when working with persons with more advanced dementia. This can provide a meaningful social role for leaders and increase access to high quality activities programming for large numbers of persons with dementia. Copyright 2004 The Gerontological Society of America

  2. A glimpse beneath Antarctic sea ice: observation of platelet-layer thickness and ice-volume fraction with multifrequency EM

    Science.gov (United States)

    Hoppmann, Mario; Hunkeler, Priska A.; Hendricks, Stefan; Kalscheuer, Thomas; Gerdes, Rüdiger

    2016-04-01

    In Antarctica, ice crystals (platelets) form and grow in supercooled waters below ice shelves. These platelets rise, accumulate beneath nearby sea ice, and subsequently form a several meter thick, porous sub-ice platelet layer. This special ice type is a unique habitat, influences sea-ice mass and energy balance, and its volume can be interpreted as an indicator of the health of an ice shelf. Although progress has been made in determining and understanding its spatio-temporal variability based on point measurements, an investigation of this phenomenon on a larger scale remains a challenge due to logistical constraints and a lack of suitable methodology. In the present study, we applied a lateral constrained Marquardt-Levenberg inversion to a unique multi-frequency electromagnetic (EM) induction sounding dataset obtained on the ice-shelf influenced fast-ice regime of Atka Bay, eastern Weddell Sea. We adapted the inversion algorithm to incorporate a sensor specific signal bias, and confirmed the reliability of the algorithm by performing a sensitivity study using synthetic data. We inverted the field data for sea-ice and platelet-layer thickness and electrical conductivity, and calculated ice-volume fractions within the platelet layer using Archie's Law. The thickness results agreed well with drillhole validation datasets within the uncertainty range, and the ice-volume fraction yielded results comparable to other studies. Both parameters together enable an estimation of the total ice volume within the platelet layer, which was found to be comparable to the volume of landfast sea ice in this region, and corresponded to more than a quarter of the annual basal melt volume of the nearby Ekström Ice Shelf. Our findings show that multi-frequency EM induction sounding is a suitable approach to efficiently map sea-ice and platelet-layer properties, with important implications for research into ocean/ice-shelf/sea-ice interactions. However, a successful application of this

  3. Montessori-Based Activities as a Trans-Generational Interface for Persons with Dementia and Preschool Children*

    Science.gov (United States)

    Camp, Cameron J.; Lee, Michelle M.

    2012-01-01

    Montessori-based activities for persons with dementia have been used to successfully provide opportunities for programming between older adults and preschool children in shared site. intergenerational care programs. Such intergenerational programming allows older adults with dementia to fulfill roles of teacher or mentor to younger children or as collaborative workmates for persons with more advanced dementia while providing children with positive one-on-one interactions with older adults. We review several studies using this approach, describe characteristics of the programs, participants and results obtained and provide recommendations for those interested in extending this line of work. PMID:22423215

  4. Montessori-Based Activities as a Trans-Generational Interface for Persons with Dementia and Preschool Children.

    Science.gov (United States)

    Camp, Cameron J; Lee, Michelle M

    2011-12-12

    Montessori-based activities for persons with dementia have been used to successfully provide opportunities for programming between older adults and preschool children in shared site. intergenerational care programs. Such intergenerational programming allows older adults with dementia to fulfill roles of teacher or mentor to younger children or as collaborative workmates for persons with more advanced dementia while providing children with positive one-on-one interactions with older adults. We review several studies using this approach, describe characteristics of the programs, participants and results obtained and provide recommendations for those interested in extending this line of work.

  5. The Dilemma of Scripted Instruction: Comparing Teacher Autonomy, Fidelity, and Resistance in the Froebelian Kindergarten, Montessori, Direct Instruction, and Success for All

    Science.gov (United States)

    Beatty, Barbara

    2011-01-01

    Background/Context: More than a century before modern controversies over scripted instruction, the Froebelian kindergarten--the original kindergarten method designed by Friedrich Froebel--and Maria Montessori's pedagogy were criticized for rigidly prescribing how teachers taught and children learned. Today, scripted methods such as Direct…

  6. Implementing Montessori Methods for Dementia™ in Ontario long-term care homes: Recreation staff and multidisciplinary consultants' perceptions of policy and practice issues.

    Science.gov (United States)

    Ducak, Kate; Denton, Margaret; Elliot, Gail

    2016-01-08

    Montessori-based activities use a person-centred approach to benefit persons living with dementia by increasing their participation in, and enjoyment of, daily life. This study investigated recreation staff and multidisciplinary consultants' perceptions of factors that affected implementing Montessori Methods for Dementia™ in long-term care homes in Ontario, Canada. Qualitative data were obtained during semi-structured telephone interviews with 17 participants who worked in these homes. A political economy of aging perspective guided thematic data analysis. Barriers such as insufficient funding and negative attitudes towards activities reinforced a task-oriented biomedical model of care. Various forms of support and understanding helped put Montessori Methods for Dementia™ into practice as a person-centred care program, thus reportedly improving the quality of life of residents living with dementia, staff and family members. These results demonstrate that when Montessori Methods for Dementia™ approaches are learned and understood by staff they can be used as practical interventions for long-term care residents living with dementia. © The Author(s) 2016.

  7. The Effect of Montessori Method Supported by Social Skills Training Program on Turkish Kindergarten Children's Skills of Understanding Feelings and Social Problem Solving

    Science.gov (United States)

    Kayili, Gökhan; Ari, Ramazan

    2016-01-01

    The current research was conducted with the purpose of analyzing the effect of Montessori method supported by Social Skills Training Program on kindergarten children's skills of understanding feelings and social problem solving. 53 children attending Ihsan Dogramaci Applied Nursery School affiliated to Selcuk University, Faculty of Health Sciences…

  8. The Dilemma of Scripted Instruction: Comparing Teacher Autonomy, Fidelity, and Resistance in the Froebelian Kindergarten, Montessori, Direct Instruction, and Success for All

    Science.gov (United States)

    Beatty, Barbara

    2011-01-01

    Background/Context: More than a century before modern controversies over scripted instruction, the Froebelian kindergarten--the original kindergarten method designed by Friedrich Froebel--and Maria Montessori's pedagogy were criticized for rigidly prescribing how teachers taught and children learned. Today, scripted methods such as Direct…

  9. 蒙台梭利课程实施过程中的问题及对策%The Problems of Implementing Montessori Curriculum and its Countermeasures

    Institute of Scientific and Technical Information of China (English)

    时松; 凌晓後

    2011-01-01

    Montessori Curriculum has a significant impact on the development of early childhood education in China. But in the process, there are many problems, such as market- oriented Montessori course, uneven curriculum implementation, lack of a unified Montessofi teacher training, parents' insufficient knowledge of Montessori curriculum and so on. To achieve sustainable development of Montessori curriculum requires together effort made by relevant administrative departments and kindergartens.%蒙台梭利课程对我国幼儿教育的发展有重大的影响,但是在实施过程中也存在诸多问题,比如蒙台梭利课程存在市场化倾向、课程实施水平参差不齐、缺乏统一的蒙氏师资培训、家长对蒙台梭利课程缺乏充分的认识等等。为了实现蒙台梭利课程可持续发展,需要相关行政部门、幼儿园、社会等多方面的共同努力。

  10. The Montessori System of Education: An Examination of Characteristic Features Set Forth in Il Metodo Della Pedagogica Scientifica. Bulletin, 1912, No. 17. Whole Number 489

    Science.gov (United States)

    Smith, Anna Tolman

    1912-01-01

    The publication of "Il metodo della pedagogica scientifica," by Dr. Maria Montessori, docent in the University of Rome, giving a full account of the inception and development of the system of education of which she is the author and the simultaneous translation of the work into English and German are events so unusual as to challenge attention.…

  11. Magnetic Helicity Estimations in Models and Observations of the Solar Magnetic Field. Part I: Finite Volume Methods

    Science.gov (United States)

    Valori, Gherardo; Pariat, Etienne; Anfinogentov, Sergey; Chen, Feng; Georgoulis, Manolis K.; Guo, Yang; Liu, Yang; Moraitis, Kostas; Thalmann, Julia K.; Yang, Shangbin

    2016-11-01

    Magnetic helicity is a conserved quantity of ideal magneto-hydrodynamics characterized by an inverse turbulent cascade. Accordingly, it is often invoked as one of the basic physical quantities driving the generation and structuring of magnetic fields in a variety of astrophysical and laboratory plasmas. We provide here the first systematic comparison of six existing methods for the estimation of the helicity of magnetic fields known in a finite volume. All such methods are reviewed, benchmarked, and compared with each other, and specifically tested for accuracy and sensitivity to errors. To that purpose, we consider four groups of numerical tests, ranging from solutions of the three-dimensional, force-free equilibrium, to magneto-hydrodynamical numerical simulations. Almost all methods are found to produce the same value of magnetic helicity within few percent in all tests. In the more solar-relevant and realistic of the tests employed here, the simulation of an eruptive flux rope, the spread in the computed values obtained by all but one method is only 3 %, indicating the reliability and mutual consistency of such methods in appropriate parameter ranges. However, methods show differences in the sensitivity to numerical resolution and to errors in the solenoidal property of the input fields. In addition to finite volume methods, we also briefly discuss a method that estimates helicity from the field lines' twist, and one that exploits the field's value at one boundary and a coronal minimal connectivity instead of a pre-defined three-dimensional magnetic-field solution.

  12. Exploration on the Innovative Utilization of "Montessori Education"%“蒙氏教育”创新运用的探索

    Institute of Scientific and Technical Information of China (English)

    刘俊霞

    2013-01-01

    蒙台梭利教育法作为一种先进的幼教模式,随着它的产生和发展,对世界各地很多国家的幼儿教育产生了深远的影响,同样对我国的幼儿教育发展也产生了巨大的影响。本文针对目前我国借鉴实践蒙氏教育的现状问题,思考了如何促进蒙氏教育的创新运用。把握蒙氏教育的精髓,进行积极的创新运用,探索可行的有效的实践形式;全面理解和把握蒙氏教育的精髓;基层幼儿园的蒙氏班需要科学的指导和加强监督;蒙氏教育的组织举办需要规范化。%Montessori education, as an advanced preschool edu-cation mode, with its advent and development, has profoundly in-fluenced preschool education in many countries around the world, including China. In view of the current situation of refer-ences and practice of Montessori education in China, how to pro-mote its innovative utilization is pondered in this paper. We should comprehensively understand and master the essence of Montessori education, positively carry out its innovative utilization and explore feasible and effective forms of practice. Montessori classes in grass-roots kindergartens should be scientifically guided and effectively supervised. Above all, the organization of Montessori education should be standardized.

  13. Magnetic helicity estimations in models and observations of the solar magnetic field. Part I: Finite volume methods

    CERN Document Server

    Valori, Gherardo; Anfinogentov, Sergey; Chen, Feng; Georgoulis, Manolis K; Guo, Yang; Liu, Yang; Moraitis, Kostas; Thalmann, Julia K; Yang, Shangbin

    2016-01-01

    Magnetic helicity is a conserved quantity of ideal magneto-hydrodynamics characterized by an inverse turbulent cascade. Accordingly, it is often invoked as one of the basic physical quantities driving the generation and structuring of magnetic fields in a variety of astrophysical and laboratory plasmas. We provide here the first systematic comparison of six existing methods for the estimation of the helicity of magnetic fields known in a finite volume. All such methods are reviewed, benchmarked, and compared with each other, and specifically tested for accuracy and sensitivity to errors. To that purpose, we consider four groups of numerical tests, ranging from solutions of the three-dimensional, force-free equilibrium, to magneto-hydrodynamical numerical simulations. Almost all methods are found to produce the same value of magnetic helicity within few percent in all tests. In the more solar-relevant and realistic of the tests employed here, the simulation of an eruptive flux rope, the spread in the computed ...

  14. VHF volume-imaging radar observation of aspect-sensitive scatterers tilted in mountain waves above a convective boundary layer

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    R. M. Worthington

    2005-06-01

    Full Text Available Thin stable atmospheric layers cause VHF radars to receive increased echo power from near zenith. Layers can be tilted from horizontal, for instance by gravity waves, and the direction of VHF "glinting" is measurable by spatial domain interferometry or many-beam Doppler beam swinging (DBS. This paper uses the Middle and Upper atmosphere (MU radar, Shigaraki, Japan as a volume-imaging radar with 64-beam DBS, to show tilting of layers and air flow in mountain waves. Tilt of aspect-sensitive echo power from horizontal is nearly parallel to air flow, as assumed in earlier measurements of mountain-wave alignment. Vertical-wind measurements are self-consistent from different beam zenith angles, despite the combined effects of aspect sensitivity and horizontal-wind gradients.

  15. Metabolic evaluation and measurement of ovarian volume in polycystic ovary sydrome: a cross-sectional observational study

    Directory of Open Access Journals (Sweden)

    Mehtap Evran

    2016-03-01

    Full Text Available Purpose: Polycystic ovary sydrome is a disease of women in reproductive period, with hirsutism or hyperandrogenic signs in laboratory evaluation, causing infertility due to dysmenorrhea and unovulation. Accompanying insulin resistance and adiposity may increase cardiometabolic risk. In our study, we planned to represent the physical examination and laboratory findings of the patients diagnosed as polycystic ovary sydrome, together with andominal ultrasonographic evaluation of the ovaries. Material-methods: Twenty-two patients who admitted the endocrinology department with the complaints of hirsutism and dysmenorrhea were included in the study. Purpose: Polycystic ovary sydrome is a disease of women in reproductive period, with hirsutism or hyperandrogenic signs in laboratory evaluation, causing infertility due to dysmenorrhea and unovulation. Accompanying insulin resistance and adiposity may increase cardiometabolic risk. In our study, we planned to represent the physical examination and laboratory findings of the patients diagnosed as polycystic ovary sydrome, together with andominal ultrasonographic evaluation of the ovaries. Material and Methods: Twenty-two patients who admitted the endocrinology department with the complaints of hirsutism and dysmenorrhea were included in the study. Their ages, family histories, polycystic ovary sydrome phenotypes, first menstrual age, length of cyclus and physical examination findings were recorded. Ferriman and Gallwey score was used for hirsutism. Insulin resistance was calculated via HOMA-IR method by making the biochemical and hormonal tests. Ovarian volumes were measured by abdominal ultrasonography. SPSS-16 was used for the statistical analysis of the findings. Results: Mean age was 21.41+/-0.88. Polycystic ovary sydrome phenotypes were B in 40.9%, C in 31.8% and A in 27.3%. Cyclus length was normal in 31.8% (27-34 days. Ferriman and Gallwey score was and #8805;7 in all of the patients. Although

  16. Efficiency of bimaxillary advancement surgery in increasing the volume of the upper airways: a systematic review of observational studies and meta-analysis.

    Science.gov (United States)

    Rosário, Henrique Damian; Oliveira, Gustavo Mussi Stefan; Freires, Irlan Almeida; de Souza Matos, Felipe; Paranhos, Luiz Renato

    2017-01-01

    Postsurgical changes of the airways have become a great point of interest because it has been reported that maxillomandibular advancement surgery can improve or eliminate obstructive sleep apnea; however, its treatment effectiveness is still controversial. The purpose of this systematic review and meta-analysis was to assess the effectiveness of maxillomandibular advancement surgery to increase upper airway volume in adults, comparing before and after treatment. Bibliographic searches of observational studies with no restriction of year or language were performed in the electronic databases PubMed, Scopus, ScienceDirect and SciELO for articles published up to April 2015. After verification of duplicate records, 1860 articles were examined. Of these, ten met the eligibility criteria, of which three were excluded for having poor methodological quality. The other seven articles were included in the systematic review and six in the meta-analysis, representing 83 patients. One study whose data were not given in absolute values was excluded from the meta-analysis. The meta-analysis showed a statistically significant difference between the averages of upper airway volume before and after surgery {7.86 cm(3) [95 % CI (6.22, 9.49), p = 1.00)}. Clinical evidence suggests that the upper airway volume is increased after maxillomandibular advancement surgery.

  17. Rain Characteristics and Large-Scale Environments of Precipitation Objects with Extreme Rain Volumes from TRMM Observations

    Science.gov (United States)

    Zhou, Yaping; Lau, William K M.; Liu, Chuntao

    2013-01-01

    This study adopts a "precipitation object" approach by using 14 years of Tropical Rainfall Measuring Mission (TRMM) Precipitation Feature (PF) and National Centers for Environmental Prediction (NCEP) reanalysis data to study rainfall structure and environmental factors associated with extreme heavy rain events. Characteristics of instantaneous extreme volumetric PFs are examined and compared to those of intermediate and small systems. It is found that instantaneous PFs exhibit a much wider scale range compared to the daily gridded precipitation accumulation range. The top 1% of the rainiest PFs contribute over 55% of total rainfall and have 2 orders of rain volume magnitude greater than those of the median PFs. We find a threshold near the top 10% beyond which the PFs grow exponentially into larger, deeper, and colder rain systems. NCEP reanalyses show that midlevel relative humidity and total precipitable water increase steadily with increasingly larger PFs, along with a rapid increase of 500 hPa upward vertical velocity beyond the top 10%. This provides the necessary moisture convergence to amplify and sustain the extreme events. The rapid increase in vertical motion is associated with the release of convective available potential energy (CAPE) in mature systems, as is evident in the increase in CAPE of PFs up to 10% and the subsequent dropoff. The study illustrates distinct stages in the development of an extreme rainfall event including: (1) a systematic buildup in large-scale temperature and moisture, (2) a rapid change in rain structure, (3) explosive growth of the PF size, and (4) a release of CAPE before the demise of the event.

  18. Observation of Hydrological Processes Using Remote Sensing. Chapter 2.14; Volume 2: The Science of Hydrology

    Science.gov (United States)

    Wilder, Peter (Editor); Su, Z.; Robeling, R. A.; Schulz, J.; Holleman, I.; Levizzani, V.; Timmermans, W. J.; Rott, H.; Mognard-Campbell, N.; de Jeu, R.; hide

    2011-01-01

    Improving water management can make a significant contribution to achieving most of the Millennium Development Goals established by the UN General Assembly in 2000, especially those related to poverty, hunger, and major diseases. The World Summit on Sustainable Development (WSSD) in 2002 recognized this need. Water and sanitation in particular received great attention from the Summit. The Johannesburg Plan of Implementation recommended to improve water resources management and scientific understanding of the water cycle through joint cooperation and research. For this purpose, it is recommended to promote knowledge sharing, provide capacity building, and facilitate the transfer of technology including remote-sensing (RS) and satellite technologies, especially to developing countries and countries with economies in transition, and to support these countries in their efforts to monitor and assess the quantity and quality of water resources, for example, by establishing and/or further developing national monitoring networks and water resources databases and by developing relevant national indicators. The Johannesburg Plan also adopted integrated water resources management as the overarching concept in addressing and solving water-related issues. As a result of the commitments made in the Johannesburg Plan of Implementation, several global and regional initiatives have emerged. Current international initiatives such as the Global Monitoring for Environment and Security (GMES) program of the European Commission and the European Space Agency (ESA), and the Global Earth Observation System of Systems (GEOSS) 10-Year Implementation Plan, have all identified Earth observation (EO) of the water cycle as the key in helping to solve the world s water problems. The availability of spatial information on water quantity and quality will also enable closure of the water budget at river basin and continental scales to the point where effective water management is essential (e.g., as

  19. Observation of Hydrological Processes Using Remote Sensing. Chapter 2.14; Volume 2: The Science of Hydrology

    Science.gov (United States)

    Wilder, Peter (Editor); Su, Z.; Robeling, R. A.; Schulz, J.; Holleman, I.; Levizzani, V.; Timmermans, W. J.; Rott, H.; Mognard-Campbell, N.; de Jeu, R.; Wagner, W.; Rodell, M.; Salama, M. S.; Parodi, G. N.; Wang, L.

    2011-01-01

    Improving water management can make a significant contribution to achieving most of the Millennium Development Goals established by the UN General Assembly in 2000, especially those related to poverty, hunger, and major diseases. The World Summit on Sustainable Development (WSSD) in 2002 recognized this need. Water and sanitation in particular received great attention from the Summit. The Johannesburg Plan of Implementation recommended to improve water resources management and scientific understanding of the water cycle through joint cooperation and research. For this purpose, it is recommended to promote knowledge sharing, provide capacity building, and facilitate the transfer of technology including remote-sensing (RS) and satellite technologies, especially to developing countries and countries with economies in transition, and to support these countries in their efforts to monitor and assess the quantity and quality of water resources, for example, by establishing and/or further developing national monitoring networks and water resources databases and by developing relevant national indicators. The Johannesburg Plan also adopted integrated water resources management as the overarching concept in addressing and solving water-related issues. As a result of the commitments made in the Johannesburg Plan of Implementation, several global and regional initiatives have emerged. Current international initiatives such as the Global Monitoring for Environment and Security (GMES) program of the European Commission and the European Space Agency (ESA), and the Global Earth Observation System of Systems (GEOSS) 10-Year Implementation Plan, have all identified Earth observation (EO) of the water cycle as the key in helping to solve the world s water problems. The availability of spatial information on water quantity and quality will also enable closure of the water budget at river basin and continental scales to the point where effective water management is essential (e.g., as

  20. HISTORIANDO A MONTESSORI: DESDE EL FEMINISMO Y SOCIALISMO UTÓPICO HACIA SU COMPROMISO COMO PIONERA DEL HOLISMO

    Directory of Open Access Journals (Sweden)

    María Celina Chavarría González

    2012-01-01

    Full Text Available El presente ensayo indaga acerca de las raíces de la educación montessoriana, pionera de concepciones holistas. Como resultado, se evidencia que únicamente puede ser abordada desde un paradigma de la complejidad y del compromiso con el destino de la humanidad. Solo una comprensión más amplia de su teleología, antropología y epistemología, nos proporcionará la perspectiva que permita integrar estas dimensiones. Con una introducción que parte de la primera costarricense en poner en práctica su filosofía, la preclara Carmen Lyra, se aborda la multi-texualidad, complejidad y trasdisciplinareidad de Montessori, así como sus contingencias y su época, indagación necesaria para sopesar su necesidad hoy.

  1. The effectiveness of spaced retrieval combined with Montessori-based activities in improving the eating ability of residents with dementia.

    Science.gov (United States)

    Wu, Hua Shan; Lin, Li Chan; Wu, Shiao Chi; Lin, Ke Neng; Liu, Hsiu Chih

    2014-08-01

    To explore the long-term effects of standardized and individualized spaced retrieval combined with Montessori-based activities on the eating ability of residents with dementia. Eating difficulty is common in residents with dementia, resulting in low food intake, followed by eating dependence, weight loss and malnutrition. A single-blinded and quasi-experimental design with repeated measures. Ninety residents with dementia from four veterans' homes in Taiwan took part in this study. The intervention consisted of spaced retrieval combined with Montessori-based activities. Twenty-five participants in the standardized group received 24 intervention sessions over 8 weeks. Thirty-eight participants in the individualized group received tailored intervention sessions. The number of intervention sessions was adjusted according to the participant's recall responses in spaced retrieval. Twenty-seven participants in the control group received no treatment. The Chinese version of the Edinburgh Feeding Evaluation in Dementia was used, and eating amounts and body weight were measured pre-test, posttest and at 1-, 3- and 6-month follow-ups. Data were collected between July 2008-February 2010. Repeated measures of all dependent variables for the three groups were analysed by the linear mixed model. The standardized and individualized interventions could significantly decrease the scores for the Chinese version of the Edinburgh Feeding Evaluation in Dementia and increase the eating amount and body weight over time. Trained nurses in institutions can schedule the standardized or individualized intervention in usual activity time to ameliorate eating difficulty and its sequels. © 2014 John Wiley & Sons Ltd.

  2. Historiando a Montessori: Desde el feminismo y socialismo utópico hacia su compromiso como pionera del holismo

    Directory of Open Access Journals (Sweden)

    Chavarría González, María Celina

    2012-09-01

    Full Text Available Resumen: El presente ensayo indaga acerca de las raíces de la educación montessoriana, pionera de concepciones holistas. Como resultado, se evidencia que únicamente puede ser abordada desde un paradigma de la complejidad y del compromiso con el destino de la humanidad. Solo una comprensión más amplia de su teleología, antropología y epistemología, nos proporcionará la perspectiva que permita integrar estas dimensiones. Con una introducción que parte de la primera costarricense en poner en práctica su filosofía, la preclara Carmen Lyra, se aborda la multi-texualidad, complejidad y trasdisciplinareidad de Montessori, así como sus contingencias y su época, indagación necesaria para sopesar su necesidad hoy.Abstract: A search for Montessori’s roots concludes that an authentic Montessori education, pioneer in holistic conceptions, can only be addressed from a paradigm of complexity, a Transdisciplinary perspective, and an attitude of compromise with the destiny of humanity. Only an all-encompassing understanding of her teleology, anthropology, and epistemology will provide a perspective to integrate these dimensions. In relating Montessori’s circumstances and life-experiences, a parallel is made to the challenges faced by the first practicing Montessorian in Costa Rica, Carmen Lyra, educator, writer, activist, and founding-member of the Costa Rican Communist Party. Montessori’s multi-texuality, contingencies and the quotidien are addressed in an effort to outline her relevance today.

  3. NO TODO LO QUE SE DICE MONTESSORI LO ES: DECODIFICACIÓN DE ELEMENTOS ESENCIALES EN UN MUNDO GLOBALIZADO (ARE WE BEING MONTESSORIANS? DECODING ESSENTIALS IN A GLOBALIZAD WORLD

    Directory of Open Access Journals (Sweden)

    Chavarría González, María Celina

    2012-05-01

    Full Text Available Resumen: Algunas prácticas montessorianas parecen pasar por alto y ser contradictorias con el sentido original de sus escritos. El presente artículo se pregunta sobre principios esenciales de la educación montessoriana, tomando como perspectiva sus propios escritos, a la luz del paradigma de la Complejidad. Los resultados de la indagación se organizan desde una perspectiva sistémica: (1 descubrimientos sobre la niñez en los contextos propiciados; (2 la relevancia de la educación como diseño cultural; (3 una formación de educadores y educadoras que enfatiza tanto la complejidad como una disposición a la comprensión empática de la niñez, la auto-observación y una perspectiva evolutiva planetaria y de la especie. Se vinculan los conceptos con las corrientes de pensamiento histórico-cultural y desde el paradigma de la complejidad. Como resultados, destacan como actuales los ideales de solidaridad y comunidad de aprendices, el papel de la observación y el respeto por los ciclos de actividad o flujo propuestos por Montessori, así como su convicción de que la evolución de la humanidad, aún incompleta, ha de ser conducida, transdisciplinariamente, en la línea de una evolución cultural consciente, particularmente urgente ante el mundo de las tecnologías de información y comunicación (TICs hoy.Abstract: The present article involves an inquiry into essential conditions for a Montessori education, in three realms: (1 evolutionary characteristics of childhood-in-context; (2 a “scientifically” prepared existential environment, to act interactively towards the learning-education-development of potentialities; (3 a system for the transformation of educators, with emphasis on a disposition towards the empathic apprehension of childhood, a complexity approach, self-observation and a planetary and species evolutionary perspective. In order to relate her concepts with mainstream educational theory, links are made to cultural

  4. Data quality and practical challenges of thyroid volume assessment by ultrasound under field conditions - observer errors may affect prevalence estimates of goitre

    Directory of Open Access Journals (Sweden)

    Torheim Liv E

    2010-12-01

    Full Text Available Abstract Background The ultrasonographic estimation of thyroid size has been advocated as being more precise than palpation to diagnose goitre. However, ultrasound also requires technical proficiency. This study was conducted among Saharawi refugees, where goitre is highly prevalent. The objectives were to assess the overall data quality of ultrasound measurements of thyroid volume (Tvol, including the intra- and inter-observer agreement, under field conditions, and to describe some of the practical challenges encountered. Methods In 2007 a cross-sectional study of 419 children (6-14 years old and 405 women (15-45 years old was performed on a population of Saharawi refugees with prevalent goitre, who reside in the Algerian desert. Tvol was measured by two trained fieldworkers using portable ultrasound equipment (examiner 1 measured 406 individuals, and examiner 2, 418 individuals. Intra- and inter-observer agreement was estimated in 12 children selected from the study population but not part of the main study. In the main study, an observer error was found in one examiner whose ultrasound images were corrected by linear regression after printing and remeasuring a sample of 272 images. Results The intra-observer agreement in Tvol was higher in examiner 1, with an intraclass correlation coefficient (ICC of 0.97 (95% CI: 0.91, 0.99 compared to 0.86 (95% CI: 0.60, 0.96 in examiner 2. The ICC for inter-observer agreement in Tvol was 0.38 (95% CI: -0.20, 0.77. Linear regression coefficients indicated a significant scaling bias in the original measurements of the AP and ML diameter and a systematic underestimation of Tvol (a product of AP, ML, CC and a constant. The agreement between re-measured and original Tvol measured by ICC (95% CI was 0.76 (0.71, 0.81. The agreement between re-measured and corrected Tvol measured by ICC (95% CI was 0.97 (0.96, 0.97. Conclusions An important challenge when using ultrasound to assess thyroid volume under field

  5. Compliance of energy-dense, small volume oral nutritional supplements in the daily clinical practice on a geriatric ward--an observational study.

    Science.gov (United States)

    Lombard, K; van Steijn, J; Schuur, T; Kuhn, M; Rouws, C; Huinink, E-L; van der Hooft, C; van Asselt, D

    2014-07-01

    Compliance is important in optimizing the clinical effectiveness of oral nutritional supplements (ONS). Small volume, energy-dense ONS (ED-ONS; ≥ 2 kcal/ml) have been shown to improve compliance in clinical trial settings. However, data from clinical practice is still lacking. The aim of the present study was to evaluate the effect of ED-ONS on the compliance in an observational set-up to obtain data from daily clinical practice on a geriatric ward. Geriatric inpatients, undernourished or at risk of undernutrition received two servings of either ED-ONS (125 ml, 2.4 kcal/ml: Nutridrink Compact Energy, Nutricia) or a standard ONS (S-ONS; 200 ml, 1.5 kcal/ml: Nutridrink) as part of their daily routine care. Patients were allocated to a group according to availability of beds and placement on the ward. Compliance (kcal/day and % of prescribed volume) was assessed by weighing returned bottles. Data were analyzed via Mixed Model for Repeated Measures. Forty-seven patients received ED-ONS, and 61 patients received S-ONS. Compliance was significantly higher with ED-ONS in geriatric inpatients compared to S-ONS ( 378 ± 14.0 kcal/day vs. 337 ± 13.6 kcal/day (mean ± SEM), p = 0.039, 63.0 ± 2.34% vs. 56.2 ± 2.26%, p = 0.039). Moreover, a trend (p=0.078) was observed towards an increasing difference in compliance over time. This study shows that compliance to ED-ONS is significantly better than to S-ONS in daily clinical practice. Although small, the difference in compliance seems to increase over time, suggesting clinical relevance with longer treatment.

  6. Educación ambiental y participación ciudadana en la Escuela Normal Superior Distrital María Montessori (Environmental education and citizen participation at Escuela Normal Superior Distrital María Montessori

    Directory of Open Access Journals (Sweden)

    Martha Stella Manosalva Corredor

    2015-01-01

    Full Text Available Resumen: Frente al deterioro de las condiciones ambientales, el equipo ambiental de la Escuela Normal Superior Distrital María Montessori de Bogotá y el “Colectivo Acción Ciudadana” convocan a instituciones gubernamentales locales y “ciudadanos habitantes de calle” a un diálogo de saberes para encontrar soluciones concertadas a la problemática ambiental. En el mismo sentido, el proyecto Educación ambiental y participación ciudadana: estrategias de una política de desarrollo sustentable de la ENSDMM trabaja en la propuesta del Plan Institucional de Gestión Ambiental, por lo que realiza una evaluación estratégica ambiental y señala que la educación ambiental y la participación ciudadana son posibles si logran vincular educación y gestión en la definición de los procesos, actividades y actuaciones, con principios de una ética de responsabilidad social, para alcanzar las metas ambientales sustentables.Abstract: With the aim of facing up to the deterioration of the environmental condition, the environmental team of Escuela Normal Superior Distrital María Montessori and “the Collective Citizen Action” convoke the local government institutions and “the citizen street inhabitants” to have a dialogue of knowledge to find concerted solutions for the current environmental problems. In the same sense, the project Environmental Education and Citizen Participation: Strategies for a policy of sustainable development at ENSDMM works on the proposal of the Environmental Management Institutional Plan. It helps to develop a strategic environmental evaluation and points out that the environmental education and citizen participation are possible if education and management are involved in the processes, activities and actions based on principles of social responsibility ethics to achieve the sustainable environmental goals.

  7. Free volume in ionic liquids: a connection of experimentally accessible observables from PALS and PVT experiments with the molecular structure from XRD data.

    Science.gov (United States)

    Beichel, Witali; Yu, Yang; Dlubek, Günter; Krause-Rehberg, Reinhard; Pionteck, Jürgen; Pfefferkorn, Dirk; Bulut, Safak; Bejan, Dana; Friedrich, Christian; Krossing, Ingo

    2013-06-14

    In the current work, free volume concepts, primarily applied to glass formers in the literature, were transferred to ionic liquids (ILs). A series of 1-butyl-3-methylimidazolium ([C4MIM](+)) based ILs was investigated by Positron Annihilation Lifetime Spectroscopy (PALS). The phase transition and dynamic properties of the ILs [C4MIM][X] with [X](-) = [Cl](-), [BF4](-), [PF6](-), [OTf](-), [NTf2](-) and [B(hfip)4](-) were reported recently (Yu et al., Phys. Chem. Chem. Phys., 2012, 14, 6856-6868). In this subsequent work, attention was paid to the connection of the free volume from PALS (here the mean hole volume, ) with the molecular structure, represented by volumes derived from X-ray diffraction (XRD) data. These were the scaled molecular volume Vm,scaled and the van der Waals volume V(vdw). Linear correlations of at the "knee" temperature ((T(k))) with V(m,scaled) and V(vdw) gave good results for the [C4MIM](+) series. Further relationships between volumes from XRD data with the occupied volume Vocc determined from PALS/PVT (Pressure Volume Temperature) measurements and from Sanchez-Lacombe Equation of State (SL-EOS) fits were elaborated (V(occ)(SL-EOS) ≈ 1.63 V(vdw), R(2) = 0.981 and V(occ)(SL-EOS) ≈ 1.12 V(m,scaled), R(2) = 0.980). Finally, the usability of V(m,scaled) was justified in terms of the Cohen-Turnbull (CT) free volume theory. Empirical CT type plots of viscosity and electrical conductivity showed a systematic increase in the critical free volume with molecular size. Such correlations allow descriptions of IL properties with the easily accessible quantity V(m,scaled) within the context of the free volume.

  8. SU-E-J-266: Cone Beam Computed Tomography (CBCT) Inter-Scan and Inter-Observer Tumor Volume Variability Assessment in Patients Treated with Stereotactic Body Radiation Therapy (SBRT) for Early Stage Non-Small Cell Lung Cancer (NSCLC)

    Energy Technology Data Exchange (ETDEWEB)

    Hou, Y; Aileen, C; Kozono, D; Killoran, J; Wagar, M; Lee, S; Hacker, F; Aerts, H; Lewis, J; Mak, R [Brigham and Women’s Hospital, Boston, MA (United States)

    2015-06-15

    Purpose: Quantification of volume changes on CBCT during SBRT for NSCLC may provide a useful radiological marker for radiation response and adaptive treatment planning, but the reproducibility of CBCT volume delineation is a concern. This study is to quantify inter-scan/inter-observer variability in tumor volume delineation on CBCT. Methods: Twenty earlystage (stage I and II) NSCLC patients were included in this analysis. All patients were treated with SBRT with a median dose of 54 Gy in 3 to 5 fractions. Two physicians independently manually contoured the primary gross tumor volume on CBCTs taken immediately before SBRT treatment (Pre) and after the same SBRT treatment (Post). Absolute volume differences (AVD) were calculated between the Pre and Post CBCTs for a given treatment to quantify inter-scan variability, and then between the two observers for a given CBCT to quantify inter-observer variability. AVD was also normalized with respect to average volume to obtain relative volume differences (RVD). Bland-Altman approach was used to evaluate variability. All statistics were calculated with SAS version 9.4. Results: The 95% limit of agreement (mean ± 2SD) on AVD and RVD measurements between Pre and Post scans were −0.32cc to 0.32cc and −0.5% to 0.5% versus −1.9 cc to 1.8 cc and −15.9% to 15.3% for the two observers respectively. The 95% limit of agreement of AVD and RVD between the two observers were −3.3 cc to 2.3 cc and −42.4% to 28.2% respectively. The greatest variability in inter-scan RVD was observed with very small tumors (< 5 cc). Conclusion: Inter-scan variability in RVD is greatest with small tumors. Inter-observer variability was larger than inter-scan variability. The 95% limit of agreement for inter-observer and inter-scan variability (∼15–30%) helps define a threshold for clinically meaningful change in tumor volume to assess SBRT response, with larger thresholds needed for very small tumors. Part of the work was funded by a Kaye

  9. Impact of 18-fluorodeoxyglucose positron emission tomography on computed tomography defined target volumes in radiation treatment planning of esophageal cancer: reduction in geographic misses with equal inter-observer variability: PET/CT improves esophageal target definition.

    Science.gov (United States)

    Schreurs, L M A; Busz, D M; Paardekooper, G M R M; Beukema, J C; Jager, P L; Van der Jagt, E J; van Dam, G M; Groen, H; Plukker, J Th M; Langendijk, J A

    2010-08-01

    Target volume definition in modern radiotherapy is based on planning computed tomography (CT). So far, 18-fluorodeoxyglucose positron emission tomography (FDG-PET) has not been included in planning modality in volume definition of esophageal cancer. This study evaluates fusion of FDG-PET and CT in patients with esophageal cancer in terms of geographic misses and inter-observer variability in volume definition. In 28 esophageal cancer patients, gross, clinical and planning tumor volumes (GTV; CTV; PTV) were defined on planning CT by three radiation oncologists. After software-based emission tomography and computed tomography (PET/CT) fusion, tumor delineations were redefined by the same radiation-oncologists. Concordance indexes (CCI's) for CT and PET/CT based GTV, CTV and PTV were calculated for each pair of observers. Incorporation of PET/CT modified tumor delineation in 17/28 subjects (61%) in cranial and/or caudal direction. Mean concordance indexes for CT-based CTV and PTV were 72 (55-86)% and 77 (61-88)%, respectively, vs. 72 (47-99)% and 76 (54-87)% for PET/CT-based CTV and PTV. Paired analyses showed no significant difference in CCI between CT and PET/CT. Combining FDG-PET and CT may improve target volume definition with less geographic misses, but without significant effects on inter-observer variability in esophageal cancer.

  10. Prospective observational study for perioperative volume replacement with 6% HES 130/0,42, 4% gelatin and 6% HES 200/0,5 in cardiac surgery

    Directory of Open Access Journals (Sweden)

    Winterhalter M

    2010-09-01

    Full Text Available Abstract Background The constantly growing amount of different kinds of colloid fluids necessitates comparative investigations with regards to the safety and effectivity in clinical use of these preparations. Hence we compared three colloid fluids in an observational study. The objective was the exploration of the influence of these three colloids on blood coagulation, hemodynamics and renal function of the cardiac surgical patient. Methods We included 90 patients undergoing an elective open-heart surgery with the use of the heart-lung machine and observed them consecutively. Group 1 [gelatin 4% (n = 30], Group 2 [HES 200/0,5 (n = 30] and Group 3 [HES 130/0,42 (n = 30]. We measured the perioperative volume replacement, the administration of blood- and coagulation-products, the application of catecholamines, the renal function, blood gas and the platelet aggregation using multiplate electrode analyzer (Multiplate®, Dynabyte medical, Munich, Germany. Results The gelatin-group needed significantly more norepinephrine than the HES 130/0.42 group. The responsible surgeon considered the blood coagulation in the HES 200/0.5 group most frequently as impaired. Furthermore we saw a significant decrease in platelet function in the HES 200/0.5 group when performing the multiplate®-analysis (ADP-and COL-test. HES 130/0.4 as well as gelatin 4% showed no significant change in platelet function. The gelatin-group and the HES 200/0.5 needed significantly more aprotinine than the HES 130/0.4 group. We saw no significant difference with regards to administration of blood and coagulation products between the three groups. The urinary excretion during the intervention was significantly higher in the HES 200/0.5 group and in the gelatin group than in the HES 130/0.4 group. Conclusions Our results confirm the lower stabilizing effect of gelatin on circulation during fluid resuscitation. The blood coagulation was mostly impaired due to HES 200/0.5 confirmed by the

  11. Estimates of volume, heat and freshwater budgets for the Arctic Mediterranean and North Atlantic in relation to the main physical processes: Insight from the EU-NACLIM observations

    Science.gov (United States)

    Rudels, Bert; Hansen, Bogi; Karstensen, Johannes; McCarthy, Gerard; Quadfasel, Detlef

    2016-04-01

    The EU NACLIM (North Atlantic Climate) project aims to understand the forcing of the North Atlantic circulation and its importance for the climate of northwestern Europe. NACLIM comprises extensive modelling studies of the atmosphere, ocean and climate, but here mainly the oceanographic observations are presented. The core observation areas are the North Atlantic Subpolar Gyre and the Greenland-Scotland Ridge, separating the North Atlantic from the Arctic Mediterranean Sea. These are the areas, where the waters of the lower limb of the Meridional Overturning Circulation (MOC) are formed and sink into the deep North Atlantic to return southward, mainly in the Deep Western Boundary Current (DWBC). The exchanges across the Greenland-Scotland Ridge, both the northward flowing Atlantic and the returning dense waters, have been monitored over decades, as have the circulation in the Subpolar gyre and the convection and mode water formation in the Labrador Sea. These studies are extended southward to the RAPID array located in the Subtropical gyre at 26oN to capture the MOC further south, and northward into the Arctic Mediterranean Sea and the formation area of the densest water in the DWBC. In the Subtropical gyre the ocean circulation is mainly forced by the wind, while in the Subpolar gyre the atmospheric influence, in addition to wind forcing, also has a large thermodynamic component, changing the characteristics of the water masses and the density structure of the gyre. The importance of cooling and freshwater input increases in the Arctic Mediterranean Sea. Variability and a recent declining trend of the MOC strength have been observed in the Subtropical gyre at the RAPID array. By contrast, both the northward flow across the Greenland-Scotland Ridge and the overflows have remained steady during the observation periods. An increased atmospheric freshwater flux does not appear to affect the dense water formation in the Arctic Mediterranean, mainly because the low

  12. Nisaidie Nif Anye Mwenyewe, Pomogi Mne Eto Sdelat' Samomu: A Comparative Case Study of the Implementation of Montessori Pedagogy in the United Republic of Tanzania and the Russian Federation

    Science.gov (United States)

    Schnepf, Candy A.

    2010-01-01

    The system of education developed by Maria Montessori, noted Italian feminist, anthropologist and physician, is the single largest pedagogy in the world with over 22,000 public, private, parochial, and charter schools on six continents, enduring even as other teaching methods have waxed and waned. Despite its international diffusion and longevity,…

  13. Nisaidie Nif Anye Mwenyewe, Pomogi Mne Eto Sdelat' Samomu: A Comparative Case Study of the Implementation of Montessori Pedagogy in the United Republic of Tanzania and the Russian Federation

    Science.gov (United States)

    Schnepf, Candy A.

    2010-01-01

    The system of education developed by Maria Montessori, noted Italian feminist, anthropologist and physician, is the single largest pedagogy in the world with over 22,000 public, private, parochial, and charter schools on six continents, enduring even as other teaching methods have waxed and waned. Despite its international diffusion and longevity,…

  14. High-Grade Glioma Radiation Therapy Target Volumes and Patterns of Failure Obtained From Magnetic Resonance Imaging and {sup 18}F-FDOPA Positron Emission Tomography Delineations From Multiple Observers

    Energy Technology Data Exchange (ETDEWEB)

    Kosztyla, Robert, E-mail: rkosztyla@bccancer.bc.ca [Department of Medical Physics, British Columbia Cancer Agency, Vancouver, British Columbia (Canada); Chan, Elisa K.; Hsu, Fred [Department of Radiation Oncology, British Columbia Cancer Agency, Vancouver, British Columbia (Canada); Wilson, Don [Department of Radiation Oncology, British Columbia Cancer Agency, Vancouver, British Columbia (Canada); Department of Functional Imaging, British Columbia Cancer Agency, Vancouver, British Columbia (Canada); Ma, Roy; Cheung, Arthur [Department of Radiation Oncology, British Columbia Cancer Agency, Vancouver, British Columbia (Canada); Zhang, Susan [Department of Medical Physics, British Columbia Cancer Agency, Vancouver, British Columbia (Canada); Department of Functional Imaging, British Columbia Cancer Agency, Vancouver, British Columbia (Canada); Moiseenko, Vitali [Department of Radiation Medicine and Applied Sciences, University of California, San Diego, La Jolla, California (United States); Benard, Francois [Department of Functional Imaging, British Columbia Cancer Agency, Vancouver, British Columbia (Canada); Nichol, Alan [Department of Radiation Oncology, British Columbia Cancer Agency, Vancouver, British Columbia (Canada)

    2013-12-01

    Purpose: The objective of this study was to compare recurrent tumor locations after radiation therapy with pretreatment delineations of high-grade gliomas from magnetic resonance imaging (MRI) and 3,4-dihydroxy-6-[{sup 18}F]fluoro-L-phenylalanine ({sup 18}F-FDOPA) positron emission tomography (PET) using contours delineated by multiple observers. Methods and Materials: Nineteen patients with newly diagnosed high-grade gliomas underwent computed tomography (CT), gadolinium contrast-enhanced MRI, and {sup 18}F-FDOPA PET/CT. The image sets (CT, MRI, and PET/CT) were registered, and 5 observers contoured gross tumor volumes (GTVs) using MRI and PET. Consensus contours were obtained by simultaneous truth and performance level estimation (STAPLE). Interobserver variability was quantified by the percentage of volume overlap. Recurrent tumor locations after radiation therapy were contoured by each observer using CT or MRI. Consensus recurrence contours were obtained with STAPLE. Results: The mean interobserver volume overlap for PET GTVs (42% ± 22%) and MRI GTVs (41% ± 22%) was not significantly different (P=.67). The mean consensus volume was significantly larger for PET GTVs (58.6 ± 52.4 cm{sup 3}) than for MRI GTVs (30.8 ± 26.0 cm{sup 3}, P=.003). More than 95% of the consensus recurrence volume was within the 95% isodose surface for 11 of 12 (92%) cases with recurrent tumor imaging. Ten (91%) of these cases extended beyond the PET GTV, and 9 (82%) were contained within a 2-cm margin on the MRI GTV. One recurrence (8%) was located outside the 95% isodose surface. Conclusions: High-grade glioma contours obtained with {sup 18}F-FDOPA PET had similar interobserver agreement to volumes obtained with MRI. Although PET-based consensus target volumes were larger than MRI-based volumes, treatment planning using PET-based volumes may not have yielded better treatment outcomes, given that all but 1 recurrence extended beyond the PET GTV and most were contained by a 2-cm

  15. Impact of rapid ultrafiltration rate on changes in the echocardiographic left atrial volume index in patients undergoing haemodialysis: a longitudinal observational study

    Science.gov (United States)

    Kim, Jwa-Kyung; Song, Young Rim; Park, GunHa; Kim, Hyung Jik; Kim, Sung Gyun

    2017-01-01

    Objective Optimal fluid management is essential when caring for a patient on haemodialysis (HD). However, if the fluid removal is too rapid, the resultant higher ultrafiltration rate (UFR) disadvantageously promotes haemodynamic instability and cardiac injury. We evaluated the effects of a rapid UFR on changes in the echocardiographic left atrial volume index (LAVI) over a period of time. Design Longitudinal observational study. Setting and participants A total of 124 new patients on HD. Interventions Echocardiography was performed at baseline and repeated after 19.7 months (range 11.3–23.1 months). Changes in LAVI (ΔLAVI/year, mL/m2/year) were calculated. The UFR was expressed in mL/hour/kg, and we used the mean UFR over 30 days (∼12–13 treatments). Main outcome measures The 75th centile of the ΔLAVI/year distribution was regarded as a ‘pathological’ increment. Results The mean interdialytic weight gain was 1.73±0.94 kg, and the UFR was 8.01±3.87 mL/hour/kg. The significant pathological increment point in ΔLAVI/year was 4.89 mL/m2/year. Correlation analysis showed that ΔLAVI/year was closely related to the baseline blood pressure, haemoglobin level, residual renal function and UFR. According to the receiver operating characteristics curve, the ‘best’ cut-off value of UFR for predicting the pathological increment was 10 mL/hour/kg, with an area under the curve of 0.712. In multivariate analysis, systolic blood pressure, a history of coronary artery disease, haemoglobin a 22% higher risk of a worsening LAVI (OR 1.22, 95% CI 1.05 to 1.41). Conclusions An increased haemodynamic load could affect left atrial remodelling in incident patients on HD. Thus, close monitoring and optimal control of UFR are needed. PMID:28148536

  16. Evaluation of personalised, one-to-one interaction using Montessori-type activities as a treatment of challenging behaviours in people with dementia: the study protocol of a crossover trial

    Directory of Open Access Journals (Sweden)

    O'Connor Daniel W

    2010-01-01

    Full Text Available Abstract Background The agitated behaviours that accompany dementia (e.g. pacing, aggression, calling out are stressful to both nursing home residents and their carers and are difficult to treat. Behaviours stemming from pain, major depression or psychosis benefit from treatment with analgesics, antidepressants or antipsychotics. In other cases, psychotropic medications have limited efficacy but are used very widely. Therefore, increasingly more attention has been paid to nonpharmacological interventions which are associated with fewer risks. The aim of the current study is to test if personalised one-to-one interaction activities based on Montessori principles will reduce the frequency of behavioural symptoms of dementia significantly more than a relevant control condition. Methods/Design We will conduct a controlled trial with randomised cross-over between conditions. Persons with moderate to severe dementia and associated behavioural problems living in aged care facilities will be included in the study. Consented, willing participants will be assigned in random order to Montessori or control blocks for two weeks then switched to the other condition. Montessori activities derive from the principles espoused by Maria Montessori and subsequent educational theorists to promote engagement in learning, namely task breakdown, guided repetition, progression in difficulty from simple to complex, and the careful matching of demands to levels of competence. The control intervention consists of conversation or reading from and looking at pictures in a newspaper to control for non-specific benefits of one-to-one interaction. Presence of target behaviour will be noted as well as level of engagement and type of affect displayed. Secondary measures also include the Cohen-Mansfield Agitation Inventory and information on time and funds spend to prepare the activities. Discussion If our results show that use of Montessori activities is effective in treating

  17. Evaluation of personalised, one-to-one interaction using Montessori-type activities as a treatment of challenging behaviours in people with dementia: the study protocol of a crossover trial.

    Science.gov (United States)

    van der Ploeg, Eva S; O'Connor, Daniel W

    2010-01-24

    The agitated behaviours that accompany dementia (e.g. pacing, aggression, calling out) are stressful to both nursing home residents and their carers and are difficult to treat. Behaviours stemming from pain, major depression or psychosis benefit from treatment with analgesics, antidepressants or antipsychotics. In other cases, psychotropic medications have limited efficacy but are used very widely. Therefore, increasingly more attention has been paid to nonpharmacological interventions which are associated with fewer risks. The aim of the current study is to test if personalised one-to-one interaction activities based on Montessori principles will reduce the frequency of behavioural symptoms of dementia significantly more than a relevant control condition. We will conduct a controlled trial with randomised cross-over between conditions. Persons with moderate to severe dementia and associated behavioural problems living in aged care facilities will be included in the study. Consented, willing participants will be assigned in random order to Montessori or control blocks for two weeks then switched to the other condition. Montessori activities derive from the principles espoused by Maria Montessori and subsequent educational theorists to promote engagement in learning, namely task breakdown, guided repetition, progression in difficulty from simple to complex, and the careful matching of demands to levels of competence. The control intervention consists of conversation or reading from and looking at pictures in a newspaper to control for non-specific benefits of one-to-one interaction. Presence of target behaviour will be noted as well as level of engagement and type of affect displayed. Secondary measures also include the Cohen-Mansfield Agitation Inventory and information on time and funds spend to prepare the activities. If our results show that use of Montessori activities is effective in treating challenging behaviours in individuals with dementia, it will

  18. NO TODO LO QUE SE DICE MONTESSORI LO ES: DECODIFICACIÓN DE ELEMENTOS ESENCIALES EN UN MUNDO GLOBALIZADO

    Directory of Open Access Journals (Sweden)

    María Celina Chavarría González

    2012-01-01

    Full Text Available Algunas prácticas montessorianas parecen pasar por alto y ser contradictorias con el sentido original de sus escritos. El presente artículo se pregunta sobre principios esenciales de la educación montessoriana, tomando como perspectiva sus propios escritos, a la luz del paradigma de la Complejidad. Los resultados de la indagación se organizan desde una perspectiva sistémica: (1 descubrimientos sobre la niñez en los contextos propiciados; (2 la relevancia de la educación como diseño cultural; (3 una formación de educadores y educadoras que enfatiza tanto la complejidad como una disposición a la comprensión empática de la niñez, la auto-observación y una perspectiva evolutiva planetaria y de la especie. Se vinculan los conceptos con las corrientes de pensamiento histórico-cultural y desde el paradigma de la complejidad. Como resultados, destacan como actuales los ideales de solidaridad y comunidad de aprendices, el papel de la observación y el respeto por los ciclos de actividad o flujo propuestos por Montessori, así como su convicción de que la evolución de la humanidad, aún incompleta, ha de ser conducida, transdisciplinariamente, en la línea de una evolución cultural consciente, particularmente urgente ante el mundo de las tecnologías de información y comunicación (TICs hoy.

  19. Volume Entropy

    CERN Document Server

    Astuti, Valerio; Rovelli, Carlo

    2016-01-01

    Building on a technical result by Brunnemann and Rideout on the spectrum of the Volume operator in Loop Quantum Gravity, we show that the dimension of the space of the quadrivalent states --with finite-volume individual nodes-- describing a region with total volume smaller than $V$, has \\emph{finite} dimension, bounded by $V \\log V$. This allows us to introduce the notion of "volume entropy": the von Neumann entropy associated to the measurement of volume.

  20. Modeling of Non-Small Cell Lung Cancer Volume Changes during CT-Based Image Guided Radiotherapy: Patterns Observed and Clinical Implications

    Directory of Open Access Journals (Sweden)

    Hiram A. Gay

    2013-01-01

    Full Text Available Background. To characterize the lung tumor volume response during conventional and hypofractionated radiotherapy (RT based on diagnostic quality CT images prior to each treatment fraction. Methods. Out of 26 consecutive patients who had received CT-on-rails IGRT to the lung from 2004 to 2008, 18 were selected because they had lung lesions that could be easily distinguished. The time course of the tumor volume for each patient was individually analyzed using a computer program. Results. The model fits of group L (conventional fractionation patients were very close to experimental data, with a median Δ% (average percent difference between data and fit of 5.1% (range 3.5–10.2%. The fits obtained in group S (hypofractionation patients were generally good, with a median Δ% of 7.2% (range 3.7–23.9% for the best fitting model. Four types of tumor responses were observed—Type A: “high” kill and “slow” dying rate; Type B: “high” kill and “fast” dying rate; Type C: “low” kill and “slow” dying rate; and Type D: “low” kill and “fast” dying rate. Conclusions. The models used in this study performed well in fitting the available dataset. The models provided useful insights into the possible underlying mechanisms responsible for the RT tumor volume response.

  1. An Epistemological Glance at the Constructivist Approach: Constructivist Learning in Dewey, Piaget, and Montessori

    Science.gov (United States)

    Ultanir, Emel

    2012-01-01

    What people gain through sensation and cognition make up the individuals' experiences and knowledge. Individuals benefit from previous experiences when resolving problems. Knowledge is constructed from the meanings one attributes to nature and the environment. In theories, it means that constructers depend on observation and when directly…

  2. Caring for people with dementia in residential aged care: successes with a composite person-centered care model featuring Montessori-based activities.

    Science.gov (United States)

    Roberts, Gail; Morley, Catherine; Walters, Wendy; Malta, Sue; Doyle, Colleen

    2015-01-01

    Person-centered models of dementia care commonly merge aspects of existing models with additional influences from published and unpublished evidence and existing government policy. This study reports on the development and evaluation of one such composite model of person-centered dementia care, the ABLE model. The model was based on building the capacity and ability of residents living with dementia, using environmental changes, staff education and organizational and community engagement. Montessori principles were also used. The evaluation of the model employed mixed methods. Significant behavior changes were evident among residents of the dementia care Unit after the model was introduced, as were reductions in anti-psychotic and sedative medication. Staff reported increased knowledge about meeting the needs of people with dementia, and experienced organizational culture change that supported the ABLE model of care. Families were very satisfied with the changes.

  3. The moderating effect of nutritional status on depressive symptoms in veteran elders with dementia: a spaced retrieval combined with Montessori-based activities.

    Science.gov (United States)

    Wu, Hua-Shan; Lin, Li-Chan

    2013-10-01

    To examine the long-term effects of fixed/individualized spaced retrieval combined with Montessori-based activities on nutritional status and body mass index and nutritional improvement's moderating effect on depressive symptoms for people with dementia during a specific follow-up period. The decrease in food intake, often combined with poor nutrition, may induce depressive symptoms in people with dementia. A single-blind, quasi-experimental study with repeated measures. Twenty-five fixed group participants received spaced retrieval combined with Montessori-based activities over 24 sessions. Thirty-eight individualized group participants received the same intervention with different sessions, which was adjusted according to each participant's learning response. Twenty-seven control group participants just received routine care. The Chinese version of the Mini-Nutritional Assessment and Cornell Scale for Depression in Dementia scores and body mass index were recorded at pre-test, posttest and 1-, 3- and 6-month follow-ups. Data were collected between July 2008-February 2010. The Mini-Nutritional Assessment scores and body mass index of the fixed and individualized groups could be significantly increased over time. Additionally, the Cornell Scale for Depression in Dementia scores could be significantly reduced as a result of the improvement of the Mini-Nutritional Assessment scores arising from the individualized intervention. The depressive symptoms of residents with dementia could be moderated by the individualized intervention through nutritional improvement. Trained clinical nurse specialists can use this individualized intervention for residents with dementia who also have poor nutrition and depressive symptoms. © 2013 Blackwell Publishing Ltd.

  4. Inspiration of Montessori Education Ideas on Naturalism to Early Childhood Education ——After reading Montessori works%蒙台梭利自然主义教育思想对我国幼儿教育的启示 ——读蒙台梭利著作有感

    Institute of Scientific and Technical Information of China (English)

    雷小朋; 雷茹

    2015-01-01

    Montessori educational thought of naturalism believe that children are the inherent vitality of potential people to be discovered. To this end, we have to create Montessori advocated the promotion of children's active exploration, environ-mental autonomous activities;to guide their children in touch with nature, get wisdom from nature and Development;General education helps children to actively explore the development of autonomy and freedom.%蒙台梭利自然主义教育思想认为,儿童是具有内在生命力的、潜能有待发掘人.为此,蒙台梭利主张我们要创设促进儿童主动探索、自主活动的环境;引导孩子接触大自然,从自然中获得智慧与发展;积极探索有助于儿童自主自由发展的常规教育.

  5. The Influence of Montessori Method on Preschool Education in Early Republic of China%民国前期蒙台梭利教育法对我国幼儿教育的影响

    Institute of Scientific and Technical Information of China (English)

    梁艳

    2011-01-01

    蒙台梭利教育法于1913年传入我国,而后在民国前期的十几年中得到了快速传播和发展。结合我国的历史背景和文化传统特点,本文就这一时期蒙台梭利教育法对我国幼儿教育的影响进行了概括和分析。%Montessori Method was introduced into China in 1913,and then obtained fast transmission and development in the early decades.Combinating our history background and characteristics of traditional culture,the author summarized the influence of Montessori Method to preschool education in the earlier stage of the Republic of China.

  6. Effects of Montessori education on the intellectual development in children aged 2 to 4 years%蒙氏教育法对2~4岁儿童智力发育的影响

    Institute of Scientific and Technical Information of China (English)

    何宏灵; 颜虹; 左玲; 刘灵; 张西萍

    2009-01-01

    目的 通过蒙氏教育法和传统教育法模式下儿童智力发育状况的对比研究,评价蒙氏教育法对2~4岁儿童智力发育的影响.方法 选择西安市某幼儿园于2006年9月新入园的2~3岁儿童进行观察研究.新生入园时随机分为蒙氏班和普通班.蒙氏组除接受常规传统教育内容外,每日参加2 h的蒙氏教育活动.普通组仅接受常规传统教育.智力测试采用首都儿科研究所编制"0~6岁小儿神经心理发育量表"分别于儿童入园时和1年后测定其智力发育.结果 干预前蒙氏组和普通组儿童智力各能区发育水平和发育商水平差异均无显著性.干预后蒙氏组和普通组儿童精细动作、适应能力、语言、社交行为发育,两组差异均有显著性(P<0.05或0.01);干预后智力发育增长水平中大运动、精细动作、语言、社交行为4个能区和发育商的增长值蒙氏组均高于普通组(P<0.05或0.01).结论 蒙氏教育法可较显著促进儿童的大运动、精细动作、语言和社交行为能力发育,从而有益于儿童的智力发育.%Objective To compare the effects of Montessori education and traditional education on the intellectual development in children aged 2 to 4 years. Methods Children aged between 2 to 3 years who were enrolled in a kindergarten in September 2006 were randomly assigned to the Montessori education and the traditional education groups. In addition to receiving the traditional education, the Montessori education group participated in the two-hour Montessori pedagogical activities every day. The intellectual development was evaluated by the Neuropsychological Development Examination Format for Children Aged 0 ~ 6 years published by Capital Pediatrics Research Institute at enrollment and one year after the trial. Results There were no significant differences in the intelligence growth level between the Montessori education and the traditional education groups at enrollment. After

  7. Liechtenstein; Assessment of the Supervision and Regulation of the Financial Sector Volume II-Detailed Assessment of Observance of Standards and Codes

    OpenAIRE

    International Monetary Fund

    2003-01-01

    This report on the offshore financial center program contains technical advice and recommendations given by the staff team of the International Monetary Fund in response to Liechtenstein’s request for technical assistance. It provides detailed assessment of observance of the Basel Core Principles for effective banking supervision, implementation of the International Organization of Securities Commissions (IOSCO) Objectives And Principles Of Securities Regulation, and observance of the Inter...

  8. From Alienation to Symbiotic: Localization of Montessori Educational Method%从异化到共生——蒙台梭利教育法的本土化探索

    Institute of Scientific and Technical Information of China (English)

    李青

    2012-01-01

    在当今幼儿教育普遍发展的浪潮中,蒙台梭利教育法或多或少地融入到我国的幼儿教育模式之中,但在其融入过程中产生了诸如形式主义倾向严重、幼儿教师对蒙氏教育法理念曲解等异化现象。基于蒙台梭利教育法在我国幼儿教育实施的现状分析,本文认为可以从由形式到实质、重视教师的多重角色的转化、给儿童创造良好的学习环境、重视东西文化的融合等几个方面实现蒙台梭利教育法在我国的本土化,更好地促进我国幼儿教育事业的改革与发展。%Nowadays,Montessori educational method is integrated into the children's education of China.During this process,problems occured.Preschool teachers bring Montessori to serious perversion of the education concept and alienation.Based on the Montessori education condition analysis,the author thinks that can by the form to the essence from,pay attention to the teacher's multiple roles conversion,to create a good children learning environment,pay attention to the cultural integration,etc realize the localization of Montessori education in our country,the better promote in early education enterprise reform and development.

  9. AN EPISTEMOLOGICAL GLANCE AT THE CONSTRUCTIVIST APPROACH: CONSTRUCTIVIST LEARNING IN DEWEY, PIAGET, AND MONTESSORI

    Directory of Open Access Journals (Sweden)

    Emel Ültanır

    2012-07-01

    Full Text Available What people gain through sensation and cognition make up the individuals’ experiences and knowledge. Individuals benefit from previous experiences when resolving problems. Knowledge is constructed from the meanings one attributes to nature and the environment. In theories, it means that constructers depend on observation and when directly translated, the theory has the meaning of observation. In other words, we construct our own reality with those belonging to our social circle. For us, there is the world and we can’t disregard that; however, the relationship between us and the outside world is a joining as materialistic and structural as in a social environment. In this article, while the foundation of constructivism is being thoroughly analysed, Vico’s ideas in the 18th century and the neurobiological studies of scientific knowledge have been utilized. In light of constructivist learning, Dewey’s opinion on “Experience and Education”, Piaget’s cognitive schema theory in “cognitive development”, and Montessori’s ideas on “Decentring the Teacher” have been examined. Finally, the ideas of the three names on constructivist learning have been interpreted.

  10. The Effects of Montessori Preschool Education on the Intelligence and Auditory Development of Young Hearing-impaired Children%蒙台梭利学前教育对低龄听障儿童智力、听觉能力的影响

    Institute of Scientific and Technical Information of China (English)

    兰莉; 李斐; 叶清; 王敏; 杨可婕; 王幼勤

    2014-01-01

    目的:考察蒙台梭利学前教育对2~3岁听障儿童智力及听觉能力发展的影响。方法将14名2~3岁听障儿童随机分成实验组和对照组,每组7人。实验组接受常规听力语言康复教育和为期12个月的蒙台梭利幼儿课程训练,对照组只接受常规听力语言康复教育。采用Griffith精神发育量表和婴幼儿有意义听觉整合量表(IT-MAIS)测试两组儿童实验前后的智力和听觉能力。结果①Griffith精神发育量表评估总发育商上,实验组和对照组的前测成绩没有显著差异(t=-0.172, P>0.05),后测成绩实验组显著好于对照组(t=2.067,P0.05),后测成绩实验组显著好于对照组(t=6.041,P0.05)。结论蒙台梭利学前教育是听障儿童康复训练中可以选择使用的一种康复方式,对其智力发展及听力发展有一定的帮助。%Objective To observe the effects of Montessori preschool education on the intelligence and auditory development of hearing-impaired children aged 2-3 years. Methods A total of 14 hearing-impaired children were randomly divided into experimental group and control group with 7 children in each. The experimental group received the routine auditory,speech rehabilitation and Montessori preschool curriculum for 12 months.By contrast, the control group only received routine auditory and speech rehabilitation training. The intelligence and auditory abilities of the children were evaluated with the Griffith Mental Development Scales (GMDS) and Infant-Toddler Meaningful Auditory Integration Scale (IT-MAIS) respectively before and after the experiment. Results (1)There was no significant difference in the development quotient(DQ) of GMDS between the two groups before the experiment(t=-0.172,P>0.05), but the DQ of the experimental group was significantly higher than that of the control group after the experiment(t=2.067,P0.05), but the auditory scores of the experimental group were significantly

  11. 蒙台梭利方法在老年痴呆患者照护中的应用%Montessori-based method for nursing care of elderly patients with dementia

    Institute of Scientific and Technical Information of China (English)

    曾雁冰; 覃凤芝; 殷梦洋; 方亚

    2016-01-01

    The nursing care is critical in preventing,eliminating or reducing symptoms and improving the quality of life for patients with dementia.Montessori-based method is a nursing care widely used in Western countries and has received good results.This article briefly introduces Montessori-based method and its operation guide,and current status of application in America and Australia,which would provide a reference for the nursing care of elderly patients with dementia in China.%痴呆症患者的护理对预防疾病、延缓病情发展,提高患者的生命质量尤为重要.蒙台梭利(Montessori)方法是近年来在国外使用、并且取得良好效果的一种老年痴呆症患者照护方法,本文主要介绍Montessori方法及其操作指南,分析其在美国、澳大利亚等国的应用情况,以明确其对我国痴呆症患者照护以及预防的启示.

  12. First estimates of volume distribution of HF-pump enhanced emissions at 6300 and 5577 Å: a comparison between observations and theory

    Directory of Open Access Journals (Sweden)

    B. Gustavsson

    2008-12-01

    Full Text Available We present bi-static observations of radio-wave induced optical emissions at 6300 and 5577 Å from a night-time radio-induced optical emission ionospheric pumping experiment at the HIPAS (Fairbanks facility in Alaska. The optical observations were made at HIPAS and from HAARP located 285 km south-east. From these observations the altitude distribution of the emissions is estimated with tomography-like methods. These estimates are compared with theoretical models. Other diagnostics used to support the theoretical calculations include the new Poker Flat AMISR UHF radar near HIPAS. We find that the altitude distribution of the emissions agree with electron transport modeling with a source of accelerated electrons located 20 km below the upper-hybrid altitude.

  13. Attention

    Science.gov (United States)

    Montessori, Maria

    2016-01-01

    "The Advanced Montessori Method, Volume 1" was published in 1918 in English and is considered a seminal work along with "The Montessori Method." In the foreword to this book, Mario Montessori writes: "...the refulgent figure of the child, Dr. Montessori pointed out, who had found his own path to mental health, who…

  14. Technical report series on global modeling and data assimilation. Volume 4: Documentation of the Goddard Earth Observing System (GEOS) data assimilation system, version 1

    Science.gov (United States)

    Suarez, Max J. (Editor); Pfaendtner, James; Bloom, Stephen; Lamich, David; Seablom, Michael; Sienkiewicz, Meta; Stobie, James; Dasilva, Arlindo

    1995-01-01

    This report describes the analysis component of the Goddard Earth Observing System, Data Assimilation System, Version 1 (GEOS-1 DAS). The general features of the data assimilation system are outlined, followed by a thorough description of the statistical interpolation algorithm, including specification of error covariances and quality control of observations. We conclude with a discussion of the current status of development of the GEOS data assimilation system. The main components of GEOS-1 DAS are an atmospheric general circulation model and an Optimal Interpolation algorithm. The system is cycled using the Incremental Analysis Update (IAU) technique in which analysis increments are introduced as time independent forcing terms in a forecast model integration. The system is capable of producing dynamically balanced states without the explicit use of initialization, as well as a time-continuous representation of non- observables such as precipitation and radiational fluxes. This version of the data assimilation system was used in the five-year reanalysis project completed in April 1994 by Goddard's Data Assimilation Office (DAO) Data from this reanalysis are available from the Goddard Distributed Active Center (DAAC), which is part of NASA's Earth Observing System Data and Information System (EOSDIS). For information on how to obtain these data sets, contact the Goddard DAAC at (301) 286-3209, EMAIL daac@gsfc.nasa.gov.

  15. Technical report series on global modeling and data assimilation. Volume 1: Documentation of the Goddard Earth Observing System (GEOS) General Circulation Model, version 1

    Science.gov (United States)

    Suarez, Max J. (Editor); Takacs, Lawrence L.; Molod, Andrea; Wang, Tina

    1994-01-01

    This technical report documents Version 1 of the Goddard Earth Observing System (GEOS) General Circulation Model (GCM). The GEOS-1 GCM is being used by NASA's Data Assimilation Office (DAO) to produce multiyear data sets for climate research. This report provides a documentation of the model components used in the GEOS-1 GCM, a complete description of model diagnostics available, and a User's Guide to facilitate GEOS-1 GCM experiments.

  16. Skylab experiments. Volume 5: Astronomy and space physics. [Skylab observations of galactic radiation, solar energy, and interplanetary composition for high school level education

    Science.gov (United States)

    1973-01-01

    The astronomy and space physics investigations conducted in the Skylab program include over 20 experiments in four categories to explore space phenomena that cannot be observed from earth. The categories of space research are as follows: (1) phenomena within the solar system, such as the effect of solar energy on Earth's atmosphere, the composition of interplanetary space, the possibility of an inner planet, and the X-ray radiation from Jupiter, (2) analysis of energetic particles such as cosmic rays and neutrons in the near-earth space, (3) stellar and galactic astronomy, and (4) self-induced environment surrounding the Skylab spacecraft.

  17. That's Not Montessori

    Science.gov (United States)

    Peters, Dane L.

    2009-01-01

    The author could not contain herself one day at school recently when a parent of three children shared something she had heard from her eldest daughter. That morning, the eldest daughter was grumbling about the fact that she and her Lower Elementary brother had to go to school while her Preschool brother did not, and she announced to her mother,…

  18. That's Not Montessori

    Science.gov (United States)

    Peters, Dane L.

    2009-01-01

    The author could not contain herself one day at school recently when a parent of three children shared something she had heard from her eldest daughter. That morning, the eldest daughter was grumbling about the fact that she and her Lower Elementary brother had to go to school while her Preschool brother did not, and she announced to her mother,…

  19. 蒙台梭利教育法在中国实行的困境与对策%The Montessori Teaching Method's Dilemma and Countermeasures in China

    Institute of Scientific and Technical Information of China (English)

    胡艺瑾; 卢清

    2012-01-01

    The Montessofi Method has experienced some problems in China. We should consider the experiences given by other countries and learn from their lessons. At the same time, we should also provide a good environment for the mixture of the Montessori Method and our cul- ture. The reform is necessary. The paper associates the present situation with the limit of the Montessori Method discussing how to make full use of it in order to find out a correct direction for the development of our children education.%蒙台梭利教育法在中国实施的过程中出现了办学目的经济化、教学过程形式化、借鉴内容极端化、教师角色模糊化等问题。应在中国实际的基础上借鉴和吸收其他国家采用蒙氏教育法的经验和教训,为蒙台梭利教育融入中国的本土文化提供良好的环境。端正办学态度是前提;考虑文化差异是客观条件;正确解读蒙台梭利教育法,了解其精髓和实质是根本要求;针对蒙氏教育自身存在的局限性,结合中国实际从班级编制、教育内容和教育实施等几个方面来进行改革是主要途径。如此,才能发挥蒙台梭利教育法的作用,才能真正照射出我国幼儿教育事业改革前行的方向。

  20. Cosmological Measures without Volume Weighting

    CERN Document Server

    Page, Don N

    2008-01-01

    Many cosmologists (myself included) have advocated volume weighting for the cosmological measure problem, weighting spatial hypersurfaces by their volume. However, this often leads to the Boltzmann brain problem, that almost all observations would be by momentary Boltzmann brains that arise very briefly as quantum fluctuations in the late universe when it has expanded to a huge size, so that our observations (too ordered for Boltzmann brains) would be highly atypical and unlikely. Here it is suggested that volume weighting may be a mistake. Volume averaging is advocated as an alternative. One consequence would be a loss of the argument for eternal inflation.

  1. Renormalized Volume

    Science.gov (United States)

    Gover, A. Rod; Waldron, Andrew

    2017-09-01

    We develop a universal distributional calculus for regulated volumes of metrics that are suitably singular along hypersurfaces. When the hypersurface is a conformal infinity we give simple integrated distribution expressions for the divergences and anomaly of the regulated volume functional valid for any choice of regulator. For closed hypersurfaces or conformally compact geometries, methods from a previously developed boundary calculus for conformally compact manifolds can be applied to give explicit holographic formulæ for the divergences and anomaly expressed as hypersurface integrals over local quantities (the method also extends to non-closed hypersurfaces). The resulting anomaly does not depend on any particular choice of regulator, while the regulator dependence of the divergences is precisely captured by these formulæ. Conformal hypersurface invariants can be studied by demanding that the singular metric obey, smoothly and formally to a suitable order, a Yamabe type problem with boundary data along the conformal infinity. We prove that the volume anomaly for these singular Yamabe solutions is a conformally invariant integral of a local Q-curvature that generalizes the Branson Q-curvature by including data of the embedding. In each dimension this canonically defines a higher dimensional generalization of the Willmore energy/rigid string action. Recently, Graham proved that the first variation of the volume anomaly recovers the density obstructing smooth solutions to this singular Yamabe problem; we give a new proof of this result employing our boundary calculus. Physical applications of our results include studies of quantum corrections to entanglement entropies.

  2. 陶行知与蒙台梭利幼儿教育思想比较%The Education Thoughts Comparison Between Tao Xingzhi and Montessori

    Institute of Scientific and Technical Information of China (English)

    张海芹; 李佳孝

    2012-01-01

    Tao Xingzhi and Montessori are well-known modem educator. Though they have many different thoughts about preschool education, they also have something in common.At the same time they have made great significant impacts on the development of preschool education.The paper aims at analyzing and comparing the similarities and differences of their preschool thoughts from the aspects of the purposes, the contents,the methods of education and the role played by teacher.%著名教育家陶行知和蒙台梭利是中西方幼儿教育的典范,从教育目的、教育内容、教育方法、教师角色等方面对二者幼儿教育思想的异同进行分析比较,对于促进我国幼儿教育发展有着重要的现实意义。

  3. A Case Study of Teachering Behavior in a Montessori Kindergarten%对蒙台梭利教师教学行为的个案研究

    Institute of Scientific and Technical Information of China (English)

    朱宗顺; 付娜

    2011-01-01

    通过对H市一所以蒙台梭利教育法为特色的幼儿园中的H教师的教学行为的个案分析发现,该教师的教学行为可分为缄默、等待、协调三类,体现了对幼儿的尊重。H教师的上述教学行为是符合蒙台梭利教育法的基本原则的。虽然蒙台梭利教育法尊重幼儿的基本原则值得借鉴,但在中国幼儿园实践蒙台梭利教育法仍需谨慎。%With a case study of the behavior of a teacher from a Montessori kindergarten in a city H, the researchers found that the teacher's behavior can be grouped into silence, waiting, and coordinating, which reflected respect for children. These behavior confo

  4. Interpretation of Montessori Education Co ncept of the Environment%解读蒙台梭利教育中的环境观

    Institute of Scientific and Technical Information of China (English)

    孙娓娓

    2015-01-01

    环境作为一种重要的教育资源,在幼儿发展过程中发挥着不可或缺的影响作用。文章围绕蒙台梭利教育中的环境观,重点阐述了环境对儿童心理发展的作用,并对如何创设“有准备的环境”及“儿童之家”的环境,从而更好地促进幼儿健康和谐全面发展进行了论述。%Enviroment, as a significant teaching resource, has an indispensible influence on infant develop-ment.This paper, based on the view of environment in Montessori Method, depicts the function of environment in the development of child psychology and how to create environment for “prepared environment” and “children's home”, so as to improve the overall development of children.

  5. Observed Volume Fluxes in the Bosphorus Strait

    Science.gov (United States)

    2011-01-01

    Tugrul et al, 2002]. [4] The United States Naval Research Laboratory (NRL) and the NATO Undersea Research Center ( NURC ) in col- laboration with the...Turkish Navy Office of Navigation, Hydrography and Oceanography deployed two mooring sections in the Bosphorus Strait as a part of the TSS08 ( NURC

  6. On the Dilemmas and Their Solutions of the Sinicization of Montessori Education Method%蒙台梭利教学法中国化的困境与对策

    Institute of Scientific and Technical Information of China (English)

    赵媛媛

    2015-01-01

    我国在引进蒙台梭利教学法时出现了以下误区:缺乏对蒙台梭利教育核心价值的掌握,功利主义严重;只注重蒙台梭利教具的操作而忽视其教育内涵,形式主义非常严重;可以操作蒙台梭利教具的教师较多,而掌握其教育本质的教师则相对缺少。针对以上存在的误区,我们必须提出相应策略,以期实现蒙台梭利教学法的中国化。%Some problems were caused when Montessori education method was introduced to and spread in Chi-na.These problems include:the core educational value of the method is not well understood which makes the prac-tice of the method too utilitarian;it is the operation of Montessori teaching instruments but not the connotation of the method itself that attracts the users which makes the formalism prevalent in the field; and the number of teachers who can operate Montessori teaching instruments is bigger than that of teachers who understand the educational na-ture of the method.This paper puts forward some solutions to these questions and hopes that the sinicization of the method is well achieved.

  7. Reflection and Observation of an Indian Montessori Preschool Institution%印度蒙台梭利幼教机构考察叙事与反思

    Institute of Scientific and Technical Information of China (English)

    周兢

    2008-01-01

    印度蒙台梭利幼教机构坚持蒙台梭利教育观,强调为幼儿提供注重细节的、规范有序的环境,关注个别教育活动和幼儿的自主游戏.教育者注重不断观察,发挥幼儿的潜能.在高结构化的蒙台梭利教育过程中,教育者注重发挥幼儿的创造性,很好地融入了印度社会文化价值观和人才培养的理想.印度蒙台梭利幼教机构目前已成为印度高水准教育机构的代表.反观我国的蒙台梭利教育实践,许多问题值得我们深思.

  8. Draft Environmental Impact Statement Reuse of Naval Station Puget Sound, Sand Point, Seattle, Washington. Volume 2. (Appendixes A through M)

    Science.gov (United States)

    1996-11-01

    alleviate immediate hardship of homeless families and individuals, and restore homeless people to their highest and best partici- pation in the life of...Community Center Muckleshoot Indian Tribe North Seattle Community College Northwest Montessori School Other Arts organizations Pacific Medical...classrooms; University of Washington support services; a Northwest Montessori School campus; classes in the arts; or a training center run by the

  9. A Preliminary Exploration on the Application of Montes-sori Mathematics Teaching in the Teaching of Children in Bottom Classes%蒙氏数学教学在小班幼儿教学中的运用初探

    Institute of Scientific and Technical Information of China (English)

    余碧凤

    2015-01-01

    Mathematical thinking lays emphasis on logic concepts and its is highly abstract, which is a great challenge to bottom class children who are still at the stage of action based on intu-itive thinking. Considering the shortcomings of traditional mathe-matics teaching for bottom classes as well as the important signif-icance of Montessori mathematics teaching, the writer specifically applied Montessori teaching in the teaching of children in bottom classes and have achieved favorable effect, children's learning enthusiasm and interest has been stimulated and their ability to actively obtain mathematics knowledge has been cultivated.%数学思维强调逻辑概念,抽象性比较强,这对尚处于直觉行动思维水平的小班幼儿来说具有很大的挑战性。考虑到小班传统数学教学的不足,以及蒙氏数学教学的重要意义,笔者在幼儿小班教学中具体应用了蒙氏数学,取得了很好的效果,激发了幼儿的学习热情和兴趣,也培养了其主动获取数学知识的能力。

  10. 蒙台梭利教育法中国化过程中存在的问题及对策%The Problems and Solutions of Montessori's Education in China

    Institute of Scientific and Technical Information of China (English)

    赖晓倩

    2016-01-01

    Montessori's education method highlights its value in the early childhood education, also plays key role in the pres-chool education's reform and development when the preschool education becomes more and more popular. However, because of the limitations, as well as the devitationg from educations, Montessori's education has lots of problems, which need edu-cators to solve accordingly.%在幼儿教育越来越受关注的今天,蒙台梭利教育法也更多地凸显其在幼儿教育中的价值,对当今世界的幼教改革和幼教发展起到了重要的作用。但是,由于蒙台梭利教育法本身存在的局限性,以及教育者对蒙台梭利教育思想理解的偏差,使蒙台梭利教育法在中国化过程中遇到很多问题,亟需幼教工作者去解决。

  11. How to Learn from Montessori Language Education for Children%如何借鉴蒙台梭利儿童语言教育思想

    Institute of Scientific and Technical Information of China (English)

    王春燕; 曹高慧

    2011-01-01

    目前很多教师对蒙台梭利的儿童语言教育思想存在一些误解。如认为其以英语教育为背景,引入中国可能会水土不服;将其教育内容仅理解为几套教具和几张作业纸:认为其只适合中大班幼儿等。之所以产生这些误解,可能与语言文化背景不同、缺乏操作定义、混龄教育及其对个体差异的关注与集体教学在方式上的融合困难重重等原因有关。客观地讲,蒙台梭利儿童语言教育思想中的间接准备、多感官参与、科学观察记录、创设良好环境等内容对我国的儿童语言教育仍具有重要启示意义。%At present some teachers hold misunderstandings about Montessori language education thoughts, such as beheving it's meant only for English context and inapplicable in China; interpreting its teaching contents as merely several sets of teaching tools and h

  12. Impact of 18-fluorodeoxyglucose positron emission tomography on computed tomography defined target volumes in radiation treatment planning of esophageal cancer : reduction in geographic misses with equal inter-observer variability

    NARCIS (Netherlands)

    Schreurs, Liesbeth; Busz, D. M.; Paardekooper, G. M. R. M.; Beukema, J. C.; Jager, P. L.; Van der Jagt, E. J.; van Dam, G. M.; Groen, H.; Plukker, J. Th. M.; Langendijk, J. A.

    2010-01-01

    P>Target volume definition in modern radiotherapy is based on planning computed tomography (CT). So far, 18-fluorodeoxyglucose positron emission tomography (FDG-PET) has not been included in planning modality in volume definition of esophageal cancer. This study evaluates fusion of FDG-PET and CT in

  13. Renormalized Volume

    CERN Document Server

    Gover, A Rod

    2016-01-01

    For any conformally compact manifold with hypersurface boundary we define a canonical renormalized volume functional and compute an explicit, holographic formula for the corresponding anomaly. For the special case of asymptotically Einstein manifolds, our method recovers the known results. The anomaly does not depend on any particular choice of regulator, but the coefficients of divergences do. We give explicit formulae for these divergences valid for any choice of regulating hypersurface; these should be relevant to recent studies of quantum corrections to entanglement entropies. The anomaly is expressed as a conformally invariant integral of a local Q-curvature that generalizes the Branson Q-curvature by including data of the embedding. In each dimension this canonically defines a higher dimensional generalization of the Willmore energy/rigid string action. We show that the variation of these energy functionals is exactly the obstruction to solving a singular Yamabe type problem with boundary data along the...

  14. 蒙台梭利教育思想在近代中国——纪念蒙台梭利"儿童之家"创办一百周年%Montessori's educational thoughts in modern China——On the 100th anniversary of Montessori's idea of children education

    Institute of Scientific and Technical Information of China (English)

    田正平

    2007-01-01

    今年是伟大的儿童教育家蒙台梭利(Maria Montessori 1870-1952)博士创办"儿童之家"一百周年,国际蒙台梭利协会将在全世界范围内举行百年庆典,纪念这位人类历史上伟大的儿童教育家和改革家.其实,早在近一个世纪之前,蒙台梭利教育思想即被当时教育界导入中国,并进行了有益的试验.百年来蒙台梭利教育思想在中国的传播和实践给我们留下了宝贵的财富,在今天我国改革开放、广泛吸收借鉴世界各国先进教育文化的形势下,重温这份珍贵遗产,有着特殊的意义.

  15. Observing participating observation

    DEFF Research Database (Denmark)

    Keiding, Tina Bering

    2011-01-01

    Current methodology concerning participating observation in general leaves the act of observation unobserved. Approaching participating observation from systems theory offers fundamental new insights into the topic. Observation is always participation. There is no way to escape becoming...... as the idea of the naïve observer becomes a void. Not recognizing and observing oneself as observer and co-producer of empirical data simply leaves the process of observation as the major unobserved absorber of contingency in data production based on participating observation....

  16. Observing participating observation

    DEFF Research Database (Denmark)

    Keiding, Tina Bering

    2010-01-01

    Current methodology concerning participating observation in general leaves the act of observation unobserved. Approaching participating observation from systems theory offers fundamental new insights into the topic. Observation is always participation. There is no way to escape becoming...... as the idea of the naïve observer becomes a void. Not recognizing and observing oneself as observer and co-producer of empirical data simply leaves the process of observation as the major unobserved absorber of contingency in data production based on participating observation....

  17. Observing participating observation

    DEFF Research Database (Denmark)

    Keiding, Tina Bering

    2011-01-01

    Current methodology concerning participating observation in general leaves the act of observation unobserved. Approaching participating observation from systems theory offers fundamental new insights into the topic. Observation is always participation. There is no way to escape becoming...... a participant and, as such, co-producer of the observed phenomenon. There is no such thing as a neutral or objective description. As observation deals with differences and process meaning, all descriptions are reconstructions and interpretations of the observed. Hence, the idea of neutral descriptions as well...... as the idea of the naïve observer becomes a void. Not recognizing and observing oneself as observer and co-producer of empirical data simply leaves the process of observation as the major unobserved absorber of contingency in data production based on participating observation....

  18. Observing participating observation

    DEFF Research Database (Denmark)

    Keiding, Tina Bering

    2010-01-01

    Current methodology concerning participating observation in general leaves the act of observation unobserved. Approaching participating observation from systems theory offers fundamental new insights into the topic. Observation is always participation. There is no way to escape becoming...... a participant and, as such, co-producer of the observed phenomenon. There is no such thing as a neutral or objective description. As observation deals with differences and process meaning, all descriptions are re-constructions and interpretations of the observed. Hence, the idea of neutral descriptions as well...... as the idea of the naïve observer becomes a void. Not recognizing and observing oneself as observer and co-producer of empirical data simply leaves the process of observation as the major unobserved absorber of contingency in data production based on participating observation....

  19. Resident-Assisted Montessori Programming (RAMP): use of a small group reading activity run by persons with dementia in adult day health care and long-term care settings.

    Science.gov (United States)

    Skrajner, Michael J; Camp, Cameron J

    2007-01-01

    Six persons in the early to middle stages of dementia ("leaders") were trained in Resident-Assisted Montessori Programming (RAMP) to lead a reading activity for 22 persons with more advanced dementia ("participants") in an adult day health center (ADHC) and a special care unit (SCU) in a skilled nursing facility. Researchers assessed the leaders' abilities to learn and follow the procedures of leading a group, as well as their satisfaction with their roles. In addition, participants' engagement and affect were measured, both during standard activities programming and during client-led activities. Results of this study suggest that persons with dementia can indeed successfully lead small group activities, if several important prerequisites are met. Furthermore, the engagement and affect of participants was more positive in client-led activities than in standard activities programming.

  20. For ignoring the moral rights of the photographer Marcus Igno Rudolf Loerbrocks the Dirección Nacional de Derecho de Autor condemned the Colegio Montessori Limitada of Cartagena

    Directory of Open Access Journals (Sweden)

    Tatiana Andrea Triana Uribe

    2017-08-01

    Full Text Available The Colombian Copyrights Office (dnda decided against the Colegio Montessori of Cartagena for infringing the moral rights of disclosure of Marcus Igno Rudolf Loerbroks. This case is important because it is one of the few decisions in which authors moral rights have been protected in Colombia. This ruling reveals the jurisprudential line that the dnda has gradually established for the protection of copyrights in our country, and especially for the moral rights enjoyed by the author of the art work as their owner. This is because, unlike the economic rights, moral rights are perpetual, inalienable and unassignable; as exposed in the case of the artist Gabriel Antonio Calle against the shopping mall San Diego and the case exposed in this review.

  1. A Concept of Utilizing Montessori Method to the Teaching of Chinese Characters for Childhood%运用蒙台梭利教学法进行婴幼儿汉字教学的构想

    Institute of Scientific and Technical Information of China (English)

    黄红英

    2016-01-01

    国内蒙台梭利早期教育课程在引进时,语言课程方面存在很大缺失。通过长期的教育教学实践,笔者发现中国汉字特有的形义功能对婴幼儿语言及大脑发育具有独特的优势。本文尝试利用蒙台梭利教育法,设计一套符合儿童发展心理学、教育学及文字学的幼儿汉字学习教具,通过具体感知、形象记忆汉字的造字理据及音形义关系,使汉字及“六书”成为孩子心目中可触摸、有温度且亲切可爱的伙伴,不再是枯燥的点划工具,达到对汉字文化的真正传承。%In the introduction of Montessori Early Child Education to China ,deficiencies exist in language course .With rich experience in teaching practice ,the author finds that the form and meaning of Chinese characters have a positive influence on the development of Children’s mind and language ability .Based on Montessori Early Education Method ,an early education toolkit for the teaching of Chinese characters is established ,which conforms to the psychology of children’s development , pedagogy ,and philology .By perceiving and understanding the formation of Chinese character and the relationship of Chinese characters form and meaning ,Children would find Chinese characters and the six categories of Chinese characters a touchable , warm and friendly partner .

  2. 蒙台梭利儿童“秩序感”、“专注力”理论和实践的反思%On the reflection on the theory and practice of Montessori's"sense of order","attention"

    Institute of Scientific and Technical Information of China (English)

    唐芳丽

    2014-01-01

    蒙台梭利是二十世纪享誉全球的幼儿教育家,她的教育理论深刻地影响着世界各国的幼儿教育。本文重点介绍了蒙台梭利关于幼儿“秩序感”、“专注力”的相关理论及实践,并结合实际探索了我国幼儿教育的误区。%Montessori is a world-renowned educator in twentieth Century, her education theory has a profound impact on children's education around the world. This paper focuses on the Montessori about the children's"sense of order","attention"of the relevant theory and practice, and combined with the practice to explore the misunderstanding of Chinese preschool education.

  3. Exponential reduction of finite volume effects with twisted boundary conditions

    CERN Document Server

    Cherman, Aleksey; Wagman, Michael L; Yaffe, Laurence G

    2016-01-01

    Flavor-twisted boundary conditions can be used for exponential reduction of finite volume artifacts in flavor-averaged observables in lattice QCD calculations with $SU(N_f)$ light quark flavor symmetry. Finite volume artifact reduction arises from destructive interference effects in a manner closely related to the phase averaging which leads to large $N_c$ volume independence. With a particular choice of flavor-twisted boundary conditions, finite volume artifacts for flavor-singlet observables in a hypercubic spacetime volume are reduced to the size of finite volume artifacts in a spacetime volume with periodic boundary conditions that is four times larger.

  4. Observer's observables. Residual diffeomorphisms

    CERN Document Server

    Duch, Paweł; Świeżewski, Jedrzej

    2016-01-01

    We investigate the fate of diffeomorphisms when the radial gauge is imposed in canonical general relativity. As shown elsewhere, the radial gauge is closely related to the observer's observables. These observables are invariant under a large subgroup of diffeomorphisms which results in their usefulness for canonical general relativity. There are, however, some diffeomorphisms, called residual diffeomorphisms, which might be "observed" by the observer as they do not preserve her observables. The present paper is devoted to the analysis of these diffeomorphisms in the case of the spatial and spacetime radial gauges. Although the residual diffeomorphisms do not form a subgroup of all diffeomorphisms, we show that their induced action in the phase space does form a group. We find the generators of the induced transformations and compute the structure functions of the algebras they form. The obtained algebras are deformations of the algebra of the Euclidean group and the algebra of the Poincar\\'e group in the spat...

  5. 蒙台梭利教育思想对当代幼儿园课程的设计的启示--《有吸收力的心灵》%The Enlightenment of Designing Kindergarten Curriculum Under the Ideas of Montessori ’s There Absorbent Mind

    Institute of Scientific and Technical Information of China (English)

    廖唐兰; 成云

    2014-01-01

    The study of Montessori can be traced back to the 1980s in China. As time flies, more and more people begin to care Montessori and her ideas about kindergarten education. At the same time,“Montessori hot”spreads from the coast to the interior, spreading from big cities to small cities, extending to the private kindergartens and officical kindergartens. This “heat” is not only found in the thinking of Montessori, but also known for pursuing her teaching tool and the way of using the teaching tool; Mongolia Nursery and Mongolia classes also appear though China… This “heat” can be traced back to Montessori’s There Absorbent Mind, it impacts on the designing classic Montessori kindergarten curriculum. This paper focuses on education ideology in There Absorbent Mind and its influence on designing contemporary kindergarten curriculum, and makes a brief analysis and elaboration.%蒙台梭利在中国的发展可追溯到20世纪80年代,随着时间发展,蒙台梭利在中国幼儿教育界的关注便在持续上涨。所以在此时间,“蒙氏热”的发生从沿海延生到内地,从大城市蔓延到中小城市,从单位办园、私人办园扩展到教育部门办的园。这种“热度”不仅体现在对蒙台梭利教育思想的引进,也体现在全国疯狂的追求蒙台梭利玩教把具的使用;还体现在遍地全国的蒙台梭利幼儿园,蒙台梭利教学实验班……这种“热度”细琢磨下来,就可以追踪到蒙台梭利经典著作之《有吸收力的心灵》对我国幼儿园课程设计的影响上来。本文作者将着眼于《有吸收力的心灵》这部经典的巨作中有关蒙台梭利的教育思想及其对我过当代幼儿园课程设计的影响,并将此做必要的分析和阐述。

  6. Ovarian volume throughout life

    DEFF Research Database (Denmark)

    Kelsey, Thomas W; Dodwell, Sarah K; Wilkinson, A Graham

    2013-01-01

    cancer. To date there is no normative model of ovarian volume throughout life. By searching the published literature for ovarian volume in healthy females, and using our own data from multiple sources (combined n=59,994) we have generated and robustly validated the first model of ovarian volume from...... to about 2.8 mL (95% CI 2.7-2.9 mL) at the menopause and smaller volumes thereafter. Our model allows us to generate normal values and ranges for ovarian volume throughout life. This is the first validated normative model of ovarian volume from conception to old age; it will be of use in the diagnosis...

  7. Reduced central blood volume in cirrhosis

    DEFF Research Database (Denmark)

    Henriksen, Jens Henrik; Bendtsen, Flemming; Sørensen, T I

    1989-01-01

    for measuring the central blood volume. We have developed a method that enables us to determine directly the central blood volume, i.e., the blood volume in the heart cavities, lungs, and central arterial tree. In 60 patients with cirrhosis and 16 control subjects the central blood volume was assessed according...... flow, or sequestration of fluid in the peritoneal cavity, or any combination thereof. The present results indicate that central circulatory underfilling is an integral part of the hemodynamic and homeostatic derangement observed in cirrhosis....

  8. Mean nuclear volume

    DEFF Research Database (Denmark)

    Mogensen, O.; Sørensen, Flemming Brandt; Bichel, P.

    1999-01-01

    We evaluated the following nine parameters with respect to their prognostic value in females with endometrial cancer: four stereologic parameters [mean nuclear volume (MNV), nuclear volume fraction, nuclear index and mitotic index], the immunohistochemical expression of cancer antigen (CA125...

  9. An estimate of global glacier volume

    Directory of Open Access Journals (Sweden)

    A. Grinsted

    2013-01-01

    Full Text Available I assess the feasibility of using multivariate scaling relationships to estimate glacier volume from glacier inventory data. Scaling laws are calibrated against volume observations optimized for the specific purpose of estimating total global glacier ice volume. I find that adjustments for continentality and elevation range improve skill of area–volume scaling. These scaling relationships are applied to each record in the Randolph Glacier Inventory, which is the first globally complete inventory of glaciers and ice caps. I estimate that the total volume of all glaciers in the world is 0.35 ± 0.07 m sea level equivalent, including ice sheet peripheral glaciers. This is substantially less than a recent state-of-the-art estimate. Area–volume scaling bias issues for large ice masses, and incomplete inventory data are offered as explanations for the difference.

  10. Shuttle user analysis (study 2.2). Volume 3: Business risk and value of operations in space (BRAVO). Part 5: Analysis of GSFC Earth Observation Satellite (EOS) system mission model using BRAVO techniques

    Science.gov (United States)

    1975-01-01

    Cost comparisons were made between three modes of operation (expend, ground refurbish, and space resupply) for the Earth Observation System (EOS-B) to furnish data to NASA on alternative ways to use the shuttle/EOS. Results of the analysis are presented in tabular form.

  11. Volume Regulated Channels

    DEFF Research Database (Denmark)

    Klausen, Thomas Kjær

    - serves a multitude of functions in the mammalian cell, regulating the membrane potential (Em), cell volume, protein activity and the driving force for facilitated transporters giving Cl- and Cl- channels a major potential of regulating cellular function. These functions include control of the cell cycle...... of volume perturbations evolution have developed system of channels and transporters to tightly control volume homeostasis. In the past decades evidence has been mounting, that the importance of these volume regulated channels and transporters are not restricted to the defense of cellular volume......, controlled cell death and cellular migration. Volume regulatory mechanisms has long been in focus for regulating cellular proliferation and my thesis work have been focusing on the role of Cl- channels in proliferation with specific emphasis on ICl, swell. Pharmacological blockage of the ubiquitously...

  12. Precision volume measurement system.

    Energy Technology Data Exchange (ETDEWEB)

    Fischer, Erin E.; Shugard, Andrew D.

    2004-11-01

    A new precision volume measurement system based on a Kansas City Plant (KCP) design was built to support the volume measurement needs of the Gas Transfer Systems (GTS) department at Sandia National Labs (SNL) in California. An engineering study was undertaken to verify or refute KCP's claims of 0.5% accuracy. The study assesses the accuracy and precision of the system. The system uses the ideal gas law and precise pressure measurements (of low-pressure helium) in a temperature and computer controlled environment to ratio a known volume to an unknown volume.

  13. [Volume replenishment in haemorrhage: caution advised].

    Science.gov (United States)

    Kooter, Albertus J; Zweegman, Sonja; Smulders, Yvo M

    2011-01-01

    Acute haemorrhage is a frequent problem in medicine. Patients with acute bleeding may present with signs of hypotension and reduced organ perfusion. The physician's reflex action is often to treat such patients with intravenous volume replenishment using colloid or cristalloid liquids. Intravenous volume replenishment has, however, a downside: it increases the tendency to bleed and therefore can increase blood loss. Previous clinical observations and experimental animal and human studies addressing volume replenishment in haemorrhagic shock have repeatedly shown that accepting hypotension favourably affects prognosis. However, relevant practice guidelines, such as for gastrointestinal bleeding, usually advise liberal intravenous volume replenishment if hypotension is present. In this article we advocate caution when considering intravenous blood volume adjustment in haemorrhage.

  14. Variable volume combustor

    Energy Technology Data Exchange (ETDEWEB)

    Ostebee, Heath Michael; Ziminsky, Willy Steve; Johnson, Thomas Edward; Keener, Christopher Paul

    2017-01-17

    The present application provides a variable volume combustor for use with a gas turbine engine. The variable volume combustor may include a liner, a number of micro-mixer fuel nozzles positioned within the liner, and a linear actuator so as to maneuver the micro-mixer fuel nozzles axially along the liner.

  15. Volume Regulated Channels

    DEFF Research Database (Denmark)

    Klausen, Thomas Kjær

    of volume perturbations evolution have developed system of channels and transporters to tightly control volume homeostasis. In the past decades evidence has been mounting, that the importance of these volume regulated channels and transporters are not restricted to the defense of cellular volume...... but are also essential for a number of physiological processes such as proliferation, controlled cell death, migration and endocrinology. The thesis have been focusing on two Channels, namely the swelling activated Cl- channel (ICl, swell) and the transient receptor potential Vanilloid (TRPV4) channel. I: Cl......- serves a multitude of functions in the mammalian cell, regulating the membrane potential (Em), cell volume, protein activity and the driving force for facilitated transporters giving Cl- and Cl- channels a major potential of regulating cellular function. These functions include control of the cell cycle...

  16. Loss of entorhinal cortex and hippocampal volumes compared to whole brain volume in normal aging: the SMART-Medea study.

    Science.gov (United States)

    Knoops, Arnoud J G; Gerritsen, Lotte; van der Graaf, Yolanda; Mali, Willem P T M; Geerlings, Mirjam I

    2012-07-30

    In non-demented elderly age-related decline in hippocampal volume has often been observed, but it is not clear if this loss is disproportionate relative to other brain tissue. Few studies examined age-related volume loss of the entorhinal cortex. We investigated the association of age with hippocampal and entorhinal cortex (ERC) volumes in a large sample of middle-aged and older persons without dementia. Within the SMART-Medea study, cross-sectional analyses were performed in 453 non-demented subjects (mean age 62±9 years, 81% male) with a history of arterial disease. Hippocampal and ERC volumes were assessed by manual segmentation on three-dimensional fast field-echo sequence T1-weighted magnetic resonance images. Automated segmentation was used to quantify volumes of BV and ICV. Hippocampal and ERC volumes were divided by intracranial volume (ICV) as well as total brain volume (BV) to determine whether age-related differences were disproportionate relative to other brain tissue. Total crude hippocampal volume was 5.96±0.7 ml and total crude ERC volume was 0.34±0.06 ml. Linear regression analyses adjusted for sex showed that with increasing age, hippocampal volume divided by ICV decreased (B per year older=-0.01 ml; 95% CI -0.02 to -0.004). However, no age-related decline in hippocampal volume relative to BV was observed (B per year older=0.005 ml; 95% CI -0.002 to 0.01). No age-related decline in ERC volume relative to ICV or BV was observed. In this population of nondemented patients with a history of vascular disease no age-related decline in entorhinal cortex volume was observed and although hippocampal volume decreased with age, it was not disproportionate relative to total brain volume. Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.

  17. Imaging characteristics of a volume holographic lens

    Science.gov (United States)

    Yang, Jing; Jiang, Zhu-qing; Xu, Zhi-qiang; Liu, Shao-jie; Sun, Ya-jun; Tao, Shi-quan

    2009-07-01

    A volume holographic grating lens can reconstruct the three-dimensional information by conducting multiple optical slicing of an object based on Bragg selectivity of the volume holographic grating. In this paper, we employ the point-spread function of volume holographic imaging system to theoretically analyze its imaging resolution. In the experiments, the volume holographic gratings are made with a spherical reference (SR) and a planar reference (PR), respectively, and used as volume holographic imaging lens in our imaging system. The longitudinal and lateral defocusing characteristics of volume holographic lens with SR and with PR are investigated experimentally by displacing the interested objects from original reference location, respectively. The effects of the parameters of the volume holographic lens on the longitudinal and lateral resolution are also discussed. The experimental results show that increasing the size of the volume holographic lens can improve the depth resolution, and in particular, it has greater influence on SR VHI. The lateral selectivity of SR VHI is more sensitive than that of PR VHI, and the Bragg degenerate diffraction of PR VHI on the y axis is obviously observed.

  18. Heliophysics 3 Volume Set

    Science.gov (United States)

    Schrijver, Carolus J.; Siscoe, George L.

    2010-11-01

    Volume 1: Preface; 1. Prologue Carolus J. Schrijver and George L. Siscoe; 2. Introduction to heliophysics Thomas J. Bogdan; 3. Creation and destruction of magnetic field Matthias Rempel; 4. Magnetic field topology Dana W. Longcope; 5. Magnetic reconnection Terry G. Forbes; 6. Structures of the magnetic field Mark B. Moldwin, George L. Siscoe and Carolus J. Schrijver; 7. Turbulence in space plasmas Charles W. Smith; 8. The solar atmosphere Viggo H. Hansteen; 9. Stellar winds and magnetic fields Viggo H. Hansteen; 10. Fundamentals of planetary magnetospheres Vytenis M. Vasyliūnas; 11. Solar-wind magnetosphere coupling: an MHD perspective Frank R. Toffoletto and George L. Siscoe; 12. On the ionosphere and chromosphere Tim Fuller-Rowell and Carolus J. Schrijver; 13. Comparative planetary environments Frances Bagenal; Bibliography; Index. Volume 2: Preface; 1. Perspective on heliophysics George L. Siscoe and Carolus J. Schrijver; 2. Introduction to space storms and radiation Sten Odenwald; 3. In-situ detection of energetic particles George Gloeckler; 4. Radiative signatures of energetic particles Tim Bastian; 5. Observations of solar and stellar eruptions, flares, and jets Hugh Hudson; 6. Models of coronal mass ejections and flares Terry Forbes; 7. Shocks in heliophysics Merav Opher; 8. Particle acceleration in shocks Dietmar Krauss-Varban; 9. Energetic particle transport Joe Giacalone; 10. Energy conversion in planetary magnetospheres Vytenis Vasyliūnas; 11. Energization of trapped particles Janet Green; 12. Flares, CMEs, and atmospheric responses Tim Fuller-Rowell and Stanley C. Solomon; 13. Energetic particles and manned spaceflight 358 Stephen Guetersloh and Neal Zapp; 14. Energetic particles and technology Alan Tribble; Appendix I. Authors and editors; List of illustrations; List of tables; Bibliography; Index. Volume 3: Preface; 1. Interconnectedness in heliophysics Carolus J. Schrijver and George L. Siscoe; 2. Long-term evolution of magnetic activity of Sun

  19. Clinical observation on severe acute pancreatitis at early stage of volume therapy%急性重症胰腺炎早期容量治疗的临床观察

    Institute of Scientific and Technical Information of China (English)

    王玉东; 王婧

    2013-01-01

    Objective To improve the severe acute pancreatitis understanding,and observe clinical efficacy and safety on capacity treatment for severe acute pancreatitis.Methods 80 cases of acute pancreatitis patients were randomly divided into observation group of 40 cases and control group of 40 cases,control group was given Regular Crystal Fluid Physiological Saline Injection capacity support,the treatment group was given the Conventional Crystal Fluid Physiological Saline Injection combined with Hydroxyethyl Starch Injection capacity support.Results Systemic inflammatory response syndrome,bowel sound recovery time,blood amylase restore normal time,C-reactive protein duration,the average hospitalization time of treatment group were shorter than that in control group (P < 0.05),the treatment group's total effective rate was significantly higher than that in control group (P < 0.05),the treatment group's complication rates significantly lower than that in control group (P < 0.05).Conclusion Severe acute pancreatitis acute reaction period should be early line capacity support,curative effect is reliable,and can reduce the complications.%目的 提高对重症急性胰腺炎的认识,观察容量治疗重症胰腺炎的临床疗效和安全性.方法 将80例急性胰腺炎患者随机分为观察组40例和对照组40例,对照组给予常规晶体液生理盐水注射液容量支持,治疗组在常规晶体液生理盐水注射液联合羟乙基淀粉注射液容量支持.观察两组治疗前后临床指标的变化.结果 治疗组的全身炎症反应综合征、肠鸣音恢复时间、血淀粉酶恢复正常时间、C-反应蛋白持续时间、平均住院时间均短于对照组(P<0.05),治疗组的总有效率显著高于对照组(P<0.05),治疗组的并发症发生率显著低于对照组(P<0.05).结论 重症急性胰腺炎急性反应期宜早期行容量支持,疗效可靠,并能减少并发症.

  20. Volume regulation in epithelia

    DEFF Research Database (Denmark)

    Larsen, Erik Hviid; Hoffmann, Else Kay

    2016-01-01

    function of iso-osmotic fluid transport that depends on Na+ recirculation. The causative relationship is discussed for a fluid-absorbing and a fluid-secreting epithelium of which the Na+ recirculation mechanisms have been identified. A large number of transporters and ion channels involved in cell volume...... regulation are cloned. The volume-regulated anion channel (VRAC) exhibiting specific electrophysiological characteristics seems exclusive to serve cell volume regulation. This is contrary to K+ channels as well as cotransporters and exchange mechanisms that may serve both transepithelial transport and cell...

  1. Towards the Amplituhedron Volume

    CERN Document Server

    Ferro, Livia; Orta, Andrea; Parisi, Matteo

    2015-01-01

    It has been recently conjectured that scattering amplitudes in planar N=4 super Yang-Mills are given by the volume of the (dual) amplituhedron. In this paper we show some interesting connections between the tree-level amplituhedron and a special class of differential equations. In particular we demonstrate how the amplituhedron volume for NMHV amplitudes is determined by these differential equations. The new formulation allows for a straightforward geometric description, without any reference to triangulations. Finally we discuss possible implications for volumes related to generic N^kMHV amplitudes.

  2. Unsteady flow volumes

    Energy Technology Data Exchange (ETDEWEB)

    Becker, B.G.; Lane, D.A.; Max, N.L.

    1995-03-01

    Flow volumes are extended for use in unsteady (time-dependent) flows. The resulting unsteady flow volumes are the 3 dimensional analog of streamlines. There are few examples where methods other than particle tracing have been used to visualize time varying flows. Since particle paths can become convoluted in time there are additional considerations to be made when extending any visualization technique to unsteady flows. We will present some solutions to the problems which occur in subdivision, rendering, and system design. We will apply the unsteady flow volumes to a variety of field types including moving multi-zoned curvilinear grids.

  3. Bronchoscopic lung volume reduction

    Directory of Open Access Journals (Sweden)

    M. I. Polkey

    2006-12-01

    Full Text Available Surgical lung volume reduction can improve exercise performance and forced expiratory volume in one second in patients with emphysema. However, the procedure is associated with a 5% mortality rate and a nonresponse rate of 25%. Accordingly, interest has focused on alternative ways of reducing lung volume. Two principle approaches are used: collapse of the diseased area using blockers placed endobronchially and the creation of extrapulmonary pathways. Preliminary data from the former approach suggest that it can be successful and that the magnitude of success is related to reduction in dynamic hyperinflation.

  4. Movement Matters: Observing the Benefits of Movement Practice

    Science.gov (United States)

    Fuchs, Melani Alexander

    2015-01-01

    Montessori's first premise is that movement and cognition are closely entwined, and movement can enhance thinking and learning (Lillard, 2005). Children must move, and practice moving, to develop strength, balance, and the stability needed to fully participate in the rigors of daily life. It is imperative for young children's motor…

  5. Free volume under shear

    Science.gov (United States)

    Maiti, Moumita; Vinutha, H. A.; Sastry, Srikanth; Heussinger, Claus

    2015-10-01

    Using an athermal quasistatic simulation protocol, we study the distribution of free volumes in sheared hard-particle packings close to, but below, the random-close packing threshold. We show that under shear, and independent of volume fraction, the free volumes develop features similar to close-packed systems — particles self-organize in a manner as to mimick the isotropically jammed state. We compare athermally sheared packings with thermalized packings and show that thermalization leads to an erasure of these structural features. The temporal evolution in particular the opening-up and the closing of free-volume patches is associated with the single-particle dynamics, showing a crossover from ballistic to diffusive behavior.

  6. Integers annual volume 2013

    CERN Document Server

    Landman, Bruce

    2014-01-01

    ""Integers"" is a refereed online journal devoted to research in the area of combinatorial number theory. It publishes original research articles in combinatorics and number theory. This work presents all papers of the 2013 volume in book form.

  7. Renormalized Volumes with Boundary

    CERN Document Server

    Gover, A Rod

    2016-01-01

    We develop a general regulated volume expansion for the volume of a manifold with boundary whose measure is suitably singular along a separating hypersurface. The expansion is shown to have a regulator independent anomaly term and a renormalized volume term given by the primitive of an associated anomaly operator. These results apply to a wide range of structures. We detail applications in the setting of measures derived from a conformally singular metric. In particular, we show that the anomaly generates invariant (Q-curvature, transgression)-type pairs for hypersurfaces with boundary. For the special case of anomalies coming from the volume enclosed by a minimal hypersurface ending on the boundary of a Poincare--Einstein structure, this result recovers Branson's Q-curvature and corresponding transgression. When the singular metric solves a boundary version of the constant scalar curvature Yamabe problem, the anomaly gives generalized Willmore energy functionals for hypersurfaces with boundary. Our approach ...

  8. Environmental chemistry: Volume A

    Energy Technology Data Exchange (ETDEWEB)

    Yen, T.F.

    1999-08-01

    This is an extensive introduction to environmental chemistry for engineering and chemical professionals. The contents of Volume A include a brief review of basic chemistry prior to coverage of litho, atmo, hydro, pedo, and biospheres.

  9. Generalized Partial Volume

    DEFF Research Database (Denmark)

    Darkner, Sune; Sporring, Jon

    2011-01-01

    Mutual Information (MI) and normalized mutual information (NMI) are popular choices as similarity measure for multimodal image registration. Presently, one of two approaches is often used for estimating these measures: The Parzen Window (PW) and the Generalized Partial Volume (GPV). Their theoret......Mutual Information (MI) and normalized mutual information (NMI) are popular choices as similarity measure for multimodal image registration. Presently, one of two approaches is often used for estimating these measures: The Parzen Window (PW) and the Generalized Partial Volume (GPV...

  10. Reachable volume RRT

    KAUST Repository

    McMahon, Troy

    2015-05-01

    © 2015 IEEE. Reachable volumes are a new technique that allows one to efficiently restrict sampling to feasible/reachable regions of the planning space even for high degree of freedom and highly constrained problems. However, they have so far only been applied to graph-based sampling-based planners. In this paper we develop the methodology to apply reachable volumes to tree-based planners such as Rapidly-Exploring Random Trees (RRTs). In particular, we propose a reachable volume RRT called RVRRT that can solve high degree of freedom problems and problems with constraints. To do so, we develop a reachable volume stepping function, a reachable volume expand function, and a distance metric based on these operations. We also present a reachable volume local planner to ensure that local paths satisfy constraints for methods such as PRMs. We show experimentally that RVRRTs can solve constrained problems with as many as 64 degrees of freedom and unconstrained problems with as many as 134 degrees of freedom. RVRRTs can solve problems more efficiently than existing methods, requiring fewer nodes and collision detection calls. We also show that it is capable of solving difficult problems that existing methods cannot.

  11. Study of very heavy systems by means of INDRA: First evidence for a volume effect in the nuclear multifragmentation process; Etude de systemes tres lourds observes avec INDRA: Premiere mise en evidence d`un effet de volume dans le processus de multifragmentation nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Frankland, John David [Inst. de Physique Nucleaire, Paris-11 Univ., 91 - Orsay (France)

    1998-12-10

    We present a study of Gd+U collisions at 36 AMeV measured with the INDRA multidetector, permitting almost complete detection (over 80%) of all the reaction products. We show that events exist which correspond to the multifragmentation of a single system comprising the majority of the nucleons for a cross-section of 2.6 mbarn, by isolating reactions for which the emitted fragments have lost all memory of the entrance channel. Such reactions correspond to neither the most central collisions nor the most isotropic events (in the fragments` momentum space), and therefore cannot be correctly distinguished from the dominant binary deeply-inelastic collisions using these criteria. An initial comparison of the selected data with a statistical code indicates that fragments are formed in a dilute, compact system, undergoing a self-similar expansion corresponding to a collective energy of between 1 and 1.5 MeV. Comparison with the same type of events observed in Xe+Sn collisions at 32 AMeV reveals the existence of a scaling law for the multifragmentation of systems of different mass at the same excitation energy per nucleon: fragment Z distributions are identical while their multiplicity increases proportionally to the mass of the multi-fragmenting system. This observation is interpreted as an experimental signal that this multifragmentation originates in a bulk instability of low-density nuclear matter (spinodal region). A complete semi-classical microscopic calculation for the two reactions, including the formation and multifragmentation by spinodal decomposition of very heavy, low-density systems, reproduces very well not only the experimental fragment multiplicities and Z distributions but also their mean kinetic energies, as well as the size distributions of the largest fragments. (author) 156 refs., 76 figs., 19 tabs.

  12. Provider volume and outcomes for oncological procedures.

    LENUS (Irish Health Repository)

    Killeen, S D

    2012-02-03

    BACKGROUND: Oncological procedures may have better outcomes if performed by high-volume providers. METHODS: A review of the English language literature incorporating searches of the Medline, Embase and Cochrane collaboration databases was performed. Studies were included if they involved a patient cohort from 1984 onwards, were community or population based, and assessed health outcome as a dependent variable and volume as an independent variable. The studies were also scored quantifiably to assess generalizability with respect to any observed volume-outcome relationship and analysed according to organ system; numbers needed to treat were estimated where possible. RESULTS: Sixty-eight relevant studies were identified and a total of 41 were included, of which 13 were based on clinical data. All showed either an inverse relationship, of variable magnitude, between provider volume and mortality, or no volume-outcome effect. All but two clinical reports revealed a statistically significant positive relationship between volume and outcome; none demonstrated the opposite. CONCLUSION: High-volume providers have a significantly better outcome for complex cancer surgery, specifically for pancreatectomy, oesphagectomy, gastrectomy and rectal resection.

  13. Finite volume hydromechanical simulation in porous media.

    Science.gov (United States)

    Nordbotten, Jan Martin

    2014-05-01

    Cell-centered finite volume methods are prevailing in numerical simulation of flow in porous media. However, due to the lack of cell-centered finite volume methods for mechanics, coupled flow and deformation is usually treated either by coupled finite-volume-finite element discretizations, or within a finite element setting. The former approach is unfavorable as it introduces two separate grid structures, while the latter approach loses the advantages of finite volume methods for the flow equation. Recently, we proposed a cell-centered finite volume method for elasticity. Herein, we explore the applicability of this novel method to provide a compatible finite volume discretization for coupled hydromechanic flows in porous media. We detail in particular the issue of coupling terms, and show how this is naturally handled. Furthermore, we observe how the cell-centered finite volume framework naturally allows for modeling fractured and fracturing porous media through internal boundary conditions. We support the discussion with a set of numerical examples: the convergence properties of the coupled scheme are first investigated; second, we illustrate the practical applicability of the method both for fractured and heterogeneous media.

  14. 4880 Volume 11 No. 3 May 2011 INSECTS OBSERVED ON ...

    African Journals Online (AJOL)

    user

    2011-05-03

    May 3, 2011 ... investigate insects that can possibly cause pollination in cowpea. ..... However, there is the need to undertake another study using a technique that .... Ramalingam S T Modern Biology: senior Secondary Science Series (New ...

  15. Observed Volume Fluxes and Mixing in the Dardanelles Strait

    Science.gov (United States)

    2013-10-04

    Laboratory (NRL) and the NATO Undersea Research Center ( NURC ; cur- rently known as the NATO Center for Maritime Research and Experimentation, CMRE...Dardanelles Strait as a part of the TSS08 ( NURC project) and EPOS (NRL project) programs. The deployment began at the end of August 2008 and ended at...previously known as the NATO NURC ) who sup- ported and helped to organi/e and fund cruises to the TSS on the R.’V Alli- ance. We arc also grateful for

  16. Volumes of chain links

    CERN Document Server

    Kaiser, James; Rollins, Clint

    2011-01-01

    Agol has conjectured that minimally twisted n-chain links are the smallest volume hyperbolic manifolds with n cusps, for n at most 10. In his thesis, Venzke mentions that these cannot be smallest volume for n at least 11, but does not provide a proof. In this paper, we give a proof of Venzke's statement. The proof for n at least 60 is completely rigorous. The proof for n between 11 and 59 uses a computer calculation, and can be made rigorous for manifolds of small enough complexity, using methods of Moser and Milley. Finally, we prove that the n-chain link with 2m or 2m+1 half-twists cannot be the minimal volume hyperbolic manifold with n cusps, provided n is at least 60 or |m| is at least 8, and we give computational data indicating this remains true for smaller n and |m|.

  17. HARNESSING BIG DATA VOLUMES

    Directory of Open Access Journals (Sweden)

    Bogdan DINU

    2014-04-01

    Full Text Available Big Data can revolutionize humanity. Hidden within the huge amounts and variety of the data we are creating we may find information, facts, social insights and benchmarks that were once virtually impossible to find or were simply inexistent. Large volumes of data allow organizations to tap in real time the full potential of all the internal or external information they possess. Big data calls for quick decisions and innovative ways to assist customers and the society as a whole. Big data platforms and product portfolio will help customers harness to the full the value of big data volumes. This paper deals with technical and technological issues related to handling big data volumes in the Big Data environment.

  18. Observing environments

    DEFF Research Database (Denmark)

    Alrøe, Hugo Fjelsted; Noe, Egon

    2012-01-01

    , and analyse how their conceptions of environment are connected to differences of perspective and observation. Results: We show the need to distinguish between inside and outside perspectives on the environment, and identify two very different and complementary logics of observation, the logic of distinction......, and that it is based fully on the conception of observation as indication by means of distinction....

  19. Topological Active Volumes

    Directory of Open Access Journals (Sweden)

    Barreira N

    2005-01-01

    Full Text Available The topological active volumes (TAVs model is a general model for 3D image segmentation. It is based on deformable models and integrates features of region-based and boundary-based segmentation techniques. Besides segmentation, it can also be used for surface reconstruction and topological analysis of the inside of detected objects. The TAV structure is flexible and allows topological changes in order to improve the adjustment to object's local characteristics, find several objects in the scene, and identify and delimit holes in detected structures. This paper describes the main features of the TAV model and shows its ability to segment volumes in an automated manner.

  20. Aperiodic Volume Optics

    Science.gov (United States)

    Gerke, Tim D.

    Presented in this thesis is an investigation into aperiodic volume optical devices. The three main topics of research and discussion are the aperiodic volume optical devices that we call computer-generated volume holograms (CGVH), defects within periodic 3D photonic crystals, and non-periodic, but ordered 3D quasicrystals. The first of these devices, CGVHs, are designed and investigated numerically and experimentally. We study the performance of multi-layered amplitude computer-generated volume holograms in terms of efficiency and angular/frequency selectivity. Simulation results show that such aperiodic devices can increase diffraction efficiency relative to periodic amplitude volume holograms while maintaining angular and wavelength selectivity. CGVHs are also designed as voxelated volumes using a new projection optimization algorithm. They are investigated using a volumetric diffraction simulation and a standard 3D beam propagation technique as well as experimentally. Both simulation and experiment verify that the structures function according to their design. These represent the first diffractive structures that have the capacity for generating arbitrary transmission and reflection wave fronts and that provide the ability for multiplexing arbitrary functionality given different illumination conditions. Also investigated and discussed in this thesis are 3D photonic crystals and quasicrystals. We demonstrate that these devices can be fabricated using a femtosecond laser direct writing system that is particularly appropriate for fabrication of such arbitrary 3D structures. We also show that these devices can provide 3D partial bandgaps which could become complete bandgaps if fabricated using high index materials or by coating lower index materials with high index metals. Our fabrication method is particularly suited to the fabrication of engineered defects within the periodic or quasi-periodic systems. We demonstrate the potential for fabricating defects within

  1. The volume of a soliton

    Energy Technology Data Exchange (ETDEWEB)

    Adam, C., E-mail: adam@fpaxp1.usc.es [Departamento de Física de Partículas, Universidad de Santiago de Compostela and Instituto Galego de Física de Altas Enerxias (IGFAE), E-15782 Santiago de Compostela (Spain); Haberichter, M. [School of Mathematics, Statistics and Actuarial Science, University of Kent, Canterbury, CT2 7NF (United Kingdom); Wereszczynski, A. [Institute of Physics, Jagiellonian University, Lojasiewicza 11, Kraków (Poland)

    2016-03-10

    There exists, in general, no unique definition of the size (volume, area, etc., depending on dimension) of a soliton. Here we demonstrate that the geometric volume (area etc.) of a soliton is singled out in the sense that it exactly coincides with the thermodynamical or continuum-mechanical volume. In addition, this volume may be defined uniquely for rather arbitrary solitons in arbitrary dimensions.

  2. Volume Hologram Formation in SU-8 Photoresist

    Directory of Open Access Journals (Sweden)

    Tina Sabel

    2017-05-01

    Full Text Available In order to further understand the mechanism of volume hologram formation in photosensitive polymers, light-induced material response is analyzed in commonly used epoxy-based negative photoresist Epon SU-8. For this purpose, time-resolved investigation of volume holographic grating growth is performed in the SU-8 based host–guest system and in the pure SU-8 material, respectively. The comparison of grating growth curves from doped and undoped system allows us to draw conclusions on the impact of individual components on the grating formation process. The successive formation of transient absorption as well as phase gratings in SU-8 is observed. Influence of exposure duration and UV flood cure on the grating growth are investigated. Observed volume holographic grating formation in SU-8 can be explained based on the generation and subsequent diffusion of photoacid as well as time-delayed polymerization of exposed and unexposed areas.

  3. Fluctuations of trading volume in a stock market

    Science.gov (United States)

    Hong, Byoung Hee; Lee, Kyoung Eun; Hwang, Jun Kyung; Lee, Jae Woo

    2009-03-01

    We consider the probability distribution function of the trading volume and the volume changes in the Korean stock market. The probability distribution function of the trading volume shows double peaks and follows a power law, P(V/)∼( at the tail part of the distribution with α=4.15(4) for the KOSPI (Korea composite Stock Price Index) and α=4.22(2) for the KOSDAQ (Korea Securities Dealers Automated Quotations), where V is the trading volume and is the monthly average value of the trading volume. The second peaks originate from the increasing trends of the average volume. The probability distribution function of the volume changes also follows a power law, P(Vr)∼Vr-β, where Vr=V(t)-V(t-T) and T is a time lag. The exponents β depend on the time lag T. We observe that the exponents β for the KOSDAQ are larger than those for the KOSPI.

  4. IVUS coronary volume alignment for distinct phases

    Science.gov (United States)

    Matsumoto, Monica Mitiko Soares; Lemos, Pedro Alves; Furuie, Sergio Shiguemi

    2009-02-01

    Image-based intravascular ultrasound (IVUS) cardiac phase detection allows coronary volume reconstruction in different phases. Consecutive volumes are not necessarily spatially aligned due to longitudinal movement of the catheter. Besides ordinary pullback velocity, there is a relative longitudinal movement of the heart vessel walls and the transducer, due to myocardial contraction. In this manuscript, we aim to spatially align cardiac phase coronary IVUS volumes. In addition, we want to investigate this non-linear longitudinal catheter movement. With this purpose, we have analyzed 120 simulated IVUS images and 10 real IVUS pullbacks. We implemented the following methodology. Firstly, we built IVUS volume for each distinct phase. Secondly, each IVUS volume was transformed into a parametric signal of average frame intensity. We have used these signals to make correlation in space with a reference one. Then we estimated the spatial distance between the distinct IVUS volumes and the reference. We have tested in simulated images and real examinations. We have also observed similar pattern in real IVUS examinations. This spatial alignment method is feasible and useful as a step towards dynamic studies of IVUS examination.

  5. Design for volume reduction

    NARCIS (Netherlands)

    Wever, R.; Boks, C.; Stevels, A.

    2007-01-01

    Traditionally packaging design-for-sustainability (DfS) strongly focuses on resource conservation and material recycling. The type and amount of materials used has been the driver in design. For consumer electronics (CE) products this weight-based approach is too limited; a volume-based approach is

  6. Introduction to the Volume.

    Science.gov (United States)

    Emihovich, Catherine; Schroder, Barbara; Panofsky, Carolyn P.

    1999-01-01

    Introduces a volume that examines the issue of critical thinking and whether or not it is culturally specific, discussing recent research on the subject. The papers focus on critical thinking and culture, historical consciousness and critical thinking, critical thinking as cultural-historical practice, culture and the development of critical…

  7. Observables, Disassembled

    CERN Document Server

    Roberts, Bryan W

    2016-01-01

    This paper argues that non-self-adjoint operators can be observables. There are only four ways for this to occur: non-self-adjoint observables can either be normal operators, or be symmetric, or have a real spectrum, or have none of these three properties. I explore each of these four classes of observables, arguing that the class of normal operators provides an equivalent formulation of quantum theory, whereas the other classes considerably extend it.

  8. Observation Station

    Science.gov (United States)

    Rutherford, Heather

    2011-01-01

    This article describes how a teacher integrates science observations into the writing center. At the observation station, students explore new items with a science theme and use their notes and questions for class writings every day. Students are exposed to a variety of different topics and motivated to write in different styles all while…

  9. Observing nebulae

    CERN Document Server

    Griffiths, Martin

    2016-01-01

    This book enables anyone with suitable instruments to undertake an examination of nebulae and see or photograph them in detail. Nebulae, ethereal clouds of gas and dust, are among the most beautiful objects to view in the night sky. These star-forming regions are a common target for observers and photographers. Griffiths describes many of the brightest and best nebulae and includes some challenges for the more experienced observer. Readers learn the many interesting astrophysical properties of these clouds, which are an important subject of study in astronomy and astrobiology. Non-mathematical in approach, the text is easily accessible to anyone with an interest in the subject. A special feature is the inclusion of an observational guide to 70 objects personally observed or imaged by the author. The guide also includes photographs of each object for ease of identification along with their celestial coordinates, magnitudes and other pertinent information. Observing Nebulae provides a ready resource to allow an...

  10. Geomagnetic Observations and Models

    CERN Document Server

    Mandea, Mioara

    2011-01-01

    This volume provides comprehensive and authoritative coverage of all the main areas linked to geomagnetic field observation, from instrumentation to methodology, on ground or near-Earth. Efforts are also focused on a 21st century e-Science approach to open access to all geomagnetic data, but also to the data preservation, data discovery, data rescue, and capacity building. Finally, modeling magnetic fields with different internal origins, with their variation in space and time, is an attempt to draw together into one place the traditional work in producing models as IGRF or describing the magn

  11. Postoperative volume balance

    DEFF Research Database (Denmark)

    Frost, H; Mortensen, C.R.; Secher, Niels H.

    2017-01-01

    In healthy humans, stroke volume (SV) and cardiac output (CO) do not increase with expansion of the central blood volume by head-down tilt or administration of fluid. Here, we exposed 85 patients to Trendelenburg's position about one hour after surgery while cardiovascular variables were determined...... non-invasively by Modelflow. In Trendelenburg's position, SV (83 ± 19 versus 89 ± 20 ml) and CO (6·2 ± 1·8 versus 6·8 ± 1·8 l/min; both Pheart rate (75 ± 15 versus 76 ± 14 b min(-1) ) and mean arterial pressure were unaffected (84 ± 15 versus 84 ± 16 mmHg). For the 33 patients......, determination of SV and/or CO in Trendelenburg's position can be used to evaluate whether a patient is in need of IV fluid as here exemplified after surgery....

  12. Select Papers. Volume 1

    Science.gov (United States)

    2011-08-01

    non- uniform rational B-splines (NURBS), 127 and BRL-CAD TM format. This dual-package development allowed for rapid development of components ...next generation of scientists and engineers. A fundamental component of our outreach program is to provide students research experiences at ARL...summer intern. There, I ran Volume Based Morphometry , an application of Statistical Parametric Mapping that was new to the Hirsch lab. I

  13. Small-Volume Injections: Evaluation of Volume Administration Deviation From Intended Injection Volumes.

    Science.gov (United States)

    Muffly, Matthew K; Chen, Michael I; Claure, Rebecca E; Drover, David R; Efron, Bradley; Fitch, William L; Hammer, Gregory B

    2017-10-01

    In the perioperative period, anesthesiologists and postanesthesia care unit (PACU) nurses routinely prepare and administer small-volume IV injections, yet the accuracy of delivered medication volumes in this setting has not been described. In this ex vivo study, we sought to characterize the degree to which small-volume injections (≤0.5 mL) deviated from the intended injection volumes among a group of pediatric anesthesiologists and pediatric postanesthesia care unit (PACU) nurses. We hypothesized that as the intended injection volumes decreased, the deviation from those intended injection volumes would increase. Ten attending pediatric anesthesiologists and 10 pediatric PACU nurses each performed a series of 10 injections into a simulated patient IV setup. Practitioners used separate 1-mL tuberculin syringes with removable 18-gauge needles (Becton-Dickinson & Company, Franklin Lakes, NJ) to aspirate 5 different volumes (0.025, 0.05, 0.1, 0.25, and 0.5 mL) of 0.25 mM Lucifer Yellow (LY) fluorescent dye constituted in saline (Sigma Aldrich, St. Louis, MO) from a rubber-stoppered vial. Each participant then injected the specified volume of LY fluorescent dye via a 3-way stopcock into IV tubing with free-flowing 0.9% sodium chloride (10 mL/min). The injected volume of LY fluorescent dye and 0.9% sodium chloride then drained into a collection vial for laboratory analysis. Microplate fluorescence wavelength detection (Infinite M1000; Tecan, Mannedorf, Switzerland) was used to measure the fluorescence of the collected fluid. Administered injection volumes were calculated based on the fluorescence of the collected fluid using a calibration curve of known LY volumes and associated fluorescence.To determine whether deviation of the administered volumes from the intended injection volumes increased at lower injection volumes, we compared the proportional injection volume error (loge [administered volume/intended volume]) for each of the 5 injection volumes using a linear

  14. Observing Insects.

    Science.gov (United States)

    Arbel, Ilil

    1991-01-01

    Describes how to observe and study the fascinating world of insects in public parks, backyards, and gardens. Discusses the activities and habits of several common insects. Includes addresses for sources of beneficial insects, seeds, and plants. (nine references) (JJK)

  15. Let Peter Rabbit Play in the Garden: Using Beatrix Potter's Work to Integrate Ecological Literacy into Montessori Classrooms

    Science.gov (United States)

    Johnson, Kelly

    2015-01-01

    Kelly Johnson introduces a series of lessons that incorporate literacy, observation, botany, history, place studies, writing, and art, with a long-term eco-literacy goal of connectedness and a conservation ethic. Johnson's initial idea to use Beatrix Potter as a model in the Lower Elementary classroom came after extensively researching…

  16. Transformation Volume Effects on Shape Memory Alloys

    Directory of Open Access Journals (Sweden)

    Anna Kosogor

    2013-07-01

    Full Text Available It is generally accepted that the martensitic transformations (MTs in the shape memory alloys (SMAs are mainly characterized by the shear deformation of the crystal lattice that arises in the course of MT, while a comparatively small volume change during MT is considered as the secondary effect, which can be disregarded when the basic characteristics of MTs and functional properties of SMAs are analyzed. This point of view is a subject to change nowadays due to the new experimental and theoretical findings. The present article elucidates (i the newly observed physical phenomena in different SMAs in their relation to the volume effect of MT; (ii the theoretical analysis of the aforementioned volume-related phenomena.

  17. Eight light flavors on large lattice volumes

    CERN Document Server

    Schaich, David

    2013-01-01

    I present first results from large-scale lattice investigations of SU(3) gauge theory with eight light flavors in the fundamental representation. Using leadership computing resources at Argonne, we are generating gauge configurations with lattice volumes up to $64^3\\times128$ at relatively strong coupling, in an attempt to access the chiral regime. We use nHYP-improved staggered fermions, carefully monitoring finite-volume effects and other systematics. Here I focus on analyses of the light hadron spectrum and chiral condensate, measured on lattice volumes up to $48^3\\times96$ with fermion masses as light as m=0.004 in lattice units. We find no clear indication of spontaneous chiral symmetry breaking in these observables. I discuss the implications of these initial results, and prospects for further physics projects employing these ensembles of gauge configurations.

  18. Environmental Report 1996, Volume 2

    Energy Technology Data Exchange (ETDEWEB)

    Harrach, R.J.

    1996-01-01

    This is Volume 2 of the Lawrence Livermore National Laboratory`s (LLNL`s) annual Environmental Report 1996, prepared for the US Department of Energy. Volume 2 supports Volume 1 summary data and is essentially a detailed data report that provides individual data points, where applicable. Volume 2 includes information on monitoring of air, air effluents, sewerable water, surface water, ground water, soil and sediment, vegetation and foodstuff, environmental radiation, and quality assurance.

  19. Volume strain within the Geysers geothermal field

    Energy Technology Data Exchange (ETDEWEB)

    Mossop, Antony [Department of Geophysics, Stanford University, Stanford, California (United States); Segall, Paul [Department of Geophysics, Stanford University, Stanford, California (United States)

    1999-12-10

    During the 1970s and 1980s. The Geysers geothermal region was rapidly developed as a site of geothermal power production. The likelihood that this could cause significant strain within the reservoir, with corresponding surface displacements, led to a series of deformation monitoring surveys. In 1973, 1975, 1977, and 1980, The Geysers region was surveyed using first-order, class I, spirit leveling. In 1994, 1995, and 1996, many of the leveling control monuments were resurveyed using high-precision Global Positioning System receivers. The two survey methods are reconciled using the GEOID96 geoid model. The displacements are inverted to determine volume strain within the reservoir. For the period 1980-1994, peak volume strains in excess of 5x10{sup -4} are imaged. There is an excellent correlation between the observed changes in reservoir steam pressures and the imaged volume strain. If reservoir pressure changes are inducing volume strain, then the reservoir quasi-static bulk modulus K must be <4.6x10{sup 9} Pa. However, seismic velocities indicate a much stiffer reservoir with K=3.4x10{sup 10} Pa. This apparent discrepancy is shown to be consistent with predicted frequency dependence in K for fractured and water-saturated rock. Inversion of surface deformation data therefore appears to be a powerful method for imaging pressure change within the body of the reservoir. Correlation between induced seismicity at The Geysers and volume strain is observed. However, earthquake distribution does not appear to have a simple relationship with volume strain rate. (c) 1999 American Geophysical Union.

  20. REFLECTION AND REFRACTION, VOLUME 2.

    Science.gov (United States)

    KLAUS, DAVID J.; AND OTHERS

    THIS VOLUME 2 OF A TWO-VOLUME SET PROVIDES AUTOINSTRUCTION IN PHYSICS. THE UNITS COVERED IN THIS VOLUME ARE (1) REFLECTION OF LIGHT, (2) PHOTOMETRY, (3) POLARIZATION, (4) REFRACTION OF LIGHT, (5) SNELL'S LAW, (6) LENSES, FOCUS, AND FOCAL POINTS, (7) IMAGE FORMATION, AND (8) ABERRATIONS, THE EYE, AND MAGNIFICATION. THE INTRODUCTION AND UNITS ON…

  1. Calculus Students' Understanding of Volume

    Science.gov (United States)

    Dorko, Allison; Speer, Natasha M.

    2013-01-01

    Researchers have documented difficulties that elementary school students have in understanding volume. Despite its importance in higher mathematics, we know little about college students' understanding of volume. This study investigated calculus students' understanding of volume. Clinical interview transcripts and written responses to volume…

  2. Observational $\\Delta\

    CERN Document Server

    Hernández, Antonio García; Monteiro, Mário J P F G; Suárez, Juan Carlos; Reese, Daniel R; Pascual-Granado, Javier; Garrido, Rafael

    2015-01-01

    Delta Scuti ($\\delta$ Sct) stars are intermediate-mass pulsators, whose intrinsic oscillations have been studied for decades. However, modelling their pulsations remains a real theoretical challenge, thereby even hampering the precise determination of global stellar parameters. In this work, we used space photometry observations of eclipsing binaries with a $\\delta$ Sct component to obtain reliable physical parameters and oscillation frequencies. Using that information, we derived an observational scaling relation between the stellar mean density and a frequency pattern in the oscillation spectrum. This pattern is analogous to the solar-like large separation but in the low order regime. We also show that this relation is independent of the rotation rate. These findings open the possibility of accurately characterizing this type of pulsator and validate the frequency pattern as a new observable for $\\delta$ Sct stars.

  3. Observational astrophysics

    CERN Document Server

    Léna, Pierre; Lebrun, François; Mignard, François; Pelat, Didier

    2012-01-01

    This is the updated, widely revised, restructured and expanded third edition of Léna et al.'s successful work Observational Astrophysics. It presents a synthesis on tools and methods of observational astrophysics of the early 21st century. Written specifically for astrophysicists and graduate students, this textbook focuses on fundamental and sometimes practical limitations on the ultimate performance that an astronomical system may reach, rather than presenting particular systems in detail. In little more than a decade there has been extraordinary progress in imaging and detection technologies, in the fields of adaptive optics, optical interferometry, in the sub-millimetre waveband, observation of neutrinos, discovery of exoplanets, to name but a few examples. The work deals with ground-based and space-based astronomy and their respective fields. And it also presents the ambitious concepts behind space missions aimed for the next decades. Avoiding particulars, it covers the whole of the electromagnetic spec...

  4. Observational astrophysics

    CERN Document Server

    Smith, Robert C

    1995-01-01

    Combining a critical account of observational methods (telescopes and instrumentation) with a lucid description of the Universe, including stars, galaxies and cosmology, Smith provides a comprehensive introduction to the whole of modern astrophysics beyond the solar system. The first half describes the techniques used by astronomers to observe the Universe: optical telescopes and instruments are discussed in detail, but observations at all wavelengths are covered, from radio to gamma-rays. After a short interlude describing the appearance of the sky at all wavelengths, the role of positional astronomy is highlighted. In the second half, a clear description is given of the contents of the Universe, including accounts of stellar evolution and cosmological models. Fully illustrated throughout, with exercises given in each chapter, this textbook provides a thorough introduction to astrophysics for all physics undergraduates, and a valuable background for physics graduates turning to research in astronomy.

  5. Real Observers and the Holographic Principle

    CERN Document Server

    Dance, M C

    2004-01-01

    The holographic principle asserts that the observable number of degrees of freedom inside a volume is proportional not to the volume, but to the surface area bounding the volume. There is currently a need to explain the principle in terms of a more fundamental microscopic theory. This paper suggests a potential explanation. This paper suggests that in general, for an observer to observe the r coordinate of an event, the process of making that observation must generate at least as much entropy as the information that the observation gains. Following on from that, this paper sets out a simple argument that leads to the result that observers on the surface of a sphere can observe an amount of information about the enclosed system that is no more than an amount that is proportional to the surface area of the sphere.

  6. Volume of a vortex and the Bradlow bound

    Science.gov (United States)

    Adam, C.; Speight, J. M.; Wereszczynski, A.

    2017-06-01

    We demonstrate that the geometric volume of a soliton coincides with the thermodynamical volume also for field theories with higher-dimensional vacuum manifolds (e.g., for gauged scalar field theories supporting vortices or monopoles), generalizing the recent results of Ref. [C. Adam, M. Haberichter, and A. Wereszczynski, Phys. Lett. B 754, 18 (2016)., 10.1016/j.physletb.2016.01.009]. We apply this observation to understand Bradlow-type bounds for general Abelian gauge theories supporting vortices, as well as some thermodynamical aspects of said theories. In the case of SDiff Bogomolny-Prasad-Sommerfield (BPS) models (being examples of perfect fluid models) we show that the base-space independent geometric volume (area) of the vortex is exactly equal to the Bradlow volume (a minimal volume for which BPS soliton solutions exist). This volume can be finite for compactons or infinite for infinitely extended solitons (in flat Minkowski space-time).

  7. The control of volume flow heating gases oh coke plant

    Directory of Open Access Journals (Sweden)

    Kostúr Karol

    2003-12-01

    Full Text Available The contribution deals with mixture and coke gases volume quantity determination for coke battery in term of their optimal redistribution at single blocks in consideration of accurate observance of corresponding technological temperature.

  8. Deltagende observation

    DEFF Research Database (Denmark)

    Warming, H.

    2007-01-01

    Artiklen er en introduktion til deltagende observation som samfundsvidenskabelig metode. I artiklen introduceres til de teorihistoriske rødder, forskellige tilgange til metoden, den konkrete fremgangsmåde og de dermed forbundne overvejelser. Endvidere eksemplificeres metoden, og der opstilles en...

  9. Deltagende observation

    DEFF Research Database (Denmark)

    Warming, H.

    2007-01-01

    Artiklen er en introduktion til deltagende observation som samfundsvidenskabelig metode. I artiklen introduceres til de teorihistoriske rødder, forskellige tilgange til metoden, den konkrete fremgangsmåde og de dermed forbundne overvejelser. Endvidere eksemplificeres metoden, og der opstilles en...

  10. Flare Observations

    Directory of Open Access Journals (Sweden)

    Benz Arnold O.

    2008-02-01

    Full Text Available Solar flares are observed at all wavelengths from decameter radio waves to gamma-rays at 100 MeV. This review focuses on recent observations in EUV, soft and hard X-rays, white light, and radio waves. Space missions such as RHESSI, Yohkoh, TRACE, and SOHO have enlarged widely the observational base. They have revealed a number of surprises: Coronal sources appear before the hard X-ray emission in chromospheric footpoints, major flare acceleration sites appear to be independent of coronal mass ejections (CMEs, electrons, and ions may be accelerated at different sites, there are at least 3 different magnetic topologies, and basic characteristics vary from small to large flares. Recent progress also includes improved insights into the flare energy partition, on the location(s of energy release, tests of energy release scenarios and particle acceleration. The interplay of observations with theory is important to deduce the geometry and to disentangle the various processes involved. There is increasing evidence supporting reconnection of magnetic field lines as the basic cause. While this process has become generally accepted as the trigger, it is still controversial how it converts a considerable fraction of the energy into non-thermal particles. Flare-like processes may be responsible for large-scale restructuring of the magnetic field in the corona as well as for its heating. Large flares influence interplanetary space and substantially affect the Earth’s lower ionosphere. While flare scenarios have slowly converged over the past decades, every new observation still reveals major unexpected results, demonstrating that solar flares, after 150 years since their discovery, remain a complex problem of astrophysics including major unsolved questions.

  11. Volume of an Industrial Autoclave

    Directory of Open Access Journals (Sweden)

    Nicholas Madaffari

    2010-01-01

    Full Text Available We were able to determine the volume of an industrial autoclave sterilization tank using a technique learned in calculus. By measuring the dimensions of the tank and roughly estimating the equation of curvature at the ends of the tank, we were able to revolve half of the end of the tank around the x axis to get its fluid volume. Adding the two volumes of the ends and the volume of the cylindrical portion on the tank yielded the total volume.

  12. Observations of Obliquely Propagating Electron Bernstein Waves

    DEFF Research Database (Denmark)

    Armstrong, R. J.; Juul Rasmussen, Jens; Stenzel, R. L.

    1981-01-01

    Plane electron Bernstein waves propagating obliquely to the magnetic field are investigated. The waves are excited by a plane grid antenna in a large volume magnetoplasma. The observations compare favorably with the predictions of the linear dispersion relation.......Plane electron Bernstein waves propagating obliquely to the magnetic field are investigated. The waves are excited by a plane grid antenna in a large volume magnetoplasma. The observations compare favorably with the predictions of the linear dispersion relation....

  13. Light Propagation Volumes

    OpenAIRE

    Mikulica, Tomáš

    2016-01-01

    Cílem diplomové práce je popsat různé metody výpočtu globálního osvětlení scény včetně techniky Light Propagation Volumes. Pro tuto metodu jsou podrobně popsány všechny tři kroky výpočtu: injekce, propagace a vykreslení. Dále je navrženo několik vlastních rozšíření zlepšující grafickou kvalitu metody. Části návrhu a implementace jsou zaměřeny na popis scény, zobrazovacího systému, tvorby stínů, implementace metody Light Propagation Volumes a navržených rozšíření. Práci uzavírá měření, porovná...

  14. Free volume distribution of nearly jammed hard sphere packings

    Science.gov (United States)

    Maiti, Moumita; Sastry, Srikanth

    2014-07-01

    We calculate the free volume distributions of nearly jammed packings of monodisperse and bidisperse hard sphere configurations. These distributions differ qualitatively from those of the fluid, displaying a power law tail at large free volumes, which constitutes a distinct signature of nearly jammed configurations, persisting for moderate degrees of decompression. We reproduce and explain the observed distribution by considering the pair correlation function within the first coordination shell for jammed hard sphere configurations. We analyze features of the equation of state near jamming, and discuss the significance of observed asphericities of the free volumes to the equation of state.

  15. Replication Regulates Volume Weighting in Quantum Cosmology

    CERN Document Server

    Hartle, James

    2009-01-01

    Probabilities for observations in cosmology are conditioned both on the universe's quantum state and on local data specifying the observational situation. We show the quantum state defines a measure for prediction through such conditional probabilities that is well behaved for spatially large or infinite universes when the probabilities that our data is replicated are taken into account. In histories where our data are rare volume weighting connects top-down probabilities conditioned on both the data and the quantum state to the bottom-up probabilities conditioned on the quantum state alone. We apply these principles to a calculation of the number of inflationary e-folds in a homogeneous, isotropic minisuperspace model with a single scalar field moving in a quadratic potential. We find that volume weighting is justified and the top-down probabilities favor a large number of e-folds.

  16. Volume dilatation in a polycarbonate blend at varying strain rates

    Science.gov (United States)

    Hiermaier, S.; Huberth, F.

    2012-05-01

    Impact loaded polymers show a variety of strain-rate dependent mechanical properties in their elastic, plastic and failure behaviour. In contrast to purely crystalline materials, the volume of polymeric materials can significantly change under irreversible deformations. In this paper, uni-axial tensile tests were performed in order to measure the dilatation in the Polycarbonate-Acrylnitril-Butadien-Styrol (PC-ABS) Bayblend T65. The accumulation of dilatation was measured at deformation speeds of 0.1 and 500 [ mm/ s]. Instrumented with a pair of two high-speed cameras, volume segments in the samples were observed. The change in volume was quantified as relation between the deformed and initial volumes of the segments. It was observed that the measured dilatations are of great significance for the constitutive models. This is specifically demonstrated through comparisons of stress-strain relations derived from the two camera-perspectives with isochoric relations based on single-surface observations of the same experiments.

  17. Observational asteroseismology

    Science.gov (United States)

    Karoff, Christoffer

    2008-05-01

    This dissertation is submitted to the Faculty of Science at the University of Aarhus, Denmark, in partial fulfillment of the requirements for the PhD degree in Astronomy. The work presented has been performed under the supervision of Dr Hans Kjeldsen and Dr Torben Artentoft. The work was mainly carried out at the Department of Physics and Astronomy, University of Aarhus and at the Deutsches Zentrum fur Luft- und Raumfahrt, Berlin (1 April to 1 October, 2005). The dissertation contains two parts where the first is a general review of the current status of observational asteroseismology; the second contains five papers that have been produced during the PhD project. The review in the first part of this dissertation describes the main observational methods and techniques in asteroseismology and discusses recent scientific results from asteroseismology of solar-like stars and low-degree helioseismology of the Sun, including results from seismic studies of e.g. abundances, flares, dynamos, granulation and rotation. The second part of this dissertation includes four published refereed papers on: variable stars in the COROT fields; slowly pulsating B stars in the NGC 371; flare driven global oscillations in the Sun; high-frequency modes in solar-like stars, and one yet unpublished paper on mixed modes in beta Hydri. The four most signigicant results obtained in this PhD project are: the discovery of a strong correlation between the energy at high frequency in the solar acoustic spectrum and flares, which suggest that flares drive global oscillations in the Sun in the same way that the entire Earth is set ringing for several weeks after a major earthquake such as the 2004 December Sumatra-Andaman one; the discovery that the Sun is not the only solar-like star that has oscillations with frequencies higher than the atmospheric acoustic cut-off frequency; the discovery of 29 candidate slowly pulsating B stars in the Small Magellanic Cloud which could, if confirmed

  18. Observing the Inflationary Reheating

    CERN Document Server

    Martin, Jerome; Vennin, Vincent

    2014-01-01

    Reheating is the the epoch which connects inflation to the subsequent hot Big-Bang phase. Conceptually very important, this era is however observationally poorly known. We show that the current Planck satellite measurements of the Cosmic Microwave Background (CMB) anisotropies constrain the kinematic properties of the reheating era for most of the inflationary models. This result is obtained by deriving the marginalized posterior distributions of the reheating parameter for about 200 models taken in Encyclopaedia Inflationaris. Weighted by the statistical evidence of each model to explain the data, we show that the Planck 2013 measurements induce an average reduction of the posterior-to-prior volume by 40%. Making some additional assumptions on reheating, such as specifying a mean equation of state parameter, or focusing the analysis on peculiar scenarios, can enhance or reduce this constraint. Our study also indicates that the Bayesian evidence of a model can substantially be affected by the reheating proper...

  19. Volume and Surface-Enhanced Volume Negative Ion Sources

    CERN Document Server

    Stockli, M P

    2013-01-01

    H- volume sources and, especially, caesiated H- volume sources are important ion sources for generating high-intensity proton beams, which then in turn generate large quantities of other particles. This chapter discusses the physics and technology of the volume production and the caesium-enhanced (surface) production of H- ions. Starting with Bacal's discovery of the H- volume production, the chapter briefly recounts the development of some H- sources, which capitalized on this process to significantly increase the production of H- beams. Another significant increase was achieved in the 1990s by adding caesiated surfaces to supplement the volume-produced ions with surface-produced ions, as illustrated with other H- sources. Finally, the focus turns to some of the experience gained when such a source was successfully ramped up in H- output and in duty factor to support the generation of 1 MW proton beams for the Spallation Neutron Source.

  20. Impact of surgical volume on nationwide hospital mortality after pancreaticoduodenectomy

    Institute of Scientific and Technical Information of China (English)

    Chul-Gyu Kim; Sungho Jo; Jae Sun Kim

    2012-01-01

    AIM:To evaluate the impact of surgical volume on nationwide hospital mortality after pancreaticoduodenectomy (PD) for periampullary tumors in South Korea.METHODS:Periampullary cancer patients who underwent PD between 2005 and 2008 were analyzed from the database of the Health Insurance Review and Assessment Service of South Korea.A total of 126 hospitals were divided into 5 categories,each similar in terms of surgical volume for each category.We used hospital mortality as a quality indicator,which was defined as death during the hospital stay for PD,and calculated adjusted mortality through multivariate logistic models using several confounder variables.RESULTS:A total of eligible 4975 patients were enrolled in this study.Average annual surgical volume of hospitals was markedly varied,ranging from 215 PDs in the very-high-volume hospital to < 10 PDs in the verylow-volume hospitals.Admission route,type of medical security,and type of operation were significantly different by surgical volume.The overall hospital mortality was 2.1% and the observed hospital mortality by surgical volume showed statistical difference.Surgical volume,age,and type of operation were independent risk factors for hospital death,and adjusted hospital mortality showed a similar difference between hospitals with observed mortality.The result of the HosmerLemeshow test was 5.76 (P =0.674),indicating an acceptable appropriateness of our regression model.CONCLUSION:The higher-volume hospitals showed lower hospital mortality than the lower-volume hospitals after PD in South Korea,which were clarified through the nationwide database.

  1. Lake volume monitoring from space

    Science.gov (United States)

    Crétaux, Jean-Francois; Abarca Del Rio, Rodrigo; Berge-Nguyen, Muriel; Arsen, Adalbert; Drolon, Vanessa; Maisongrande, Philippe

    2016-04-01

    Lakes are integrator of environmental changes occurring at regional to global scale and present a high variety of behaviors on a variety of time scales (cyclic and secular) depending on the climate conditions and their morphology. In addition their crucial importance as water stocks and retaining, given the significant environment changes occurring worldwide at many anthropocentric levels, has increased the necessity of monitoring all its morphodynamics characteristics, say water level, surface (water contour) and volume. The satellite altimetry and satellite imagery together are now widely used for the calculation of lakes and reservoirs water storage changes worldwide. However strategies and algorithms to calculate these characteristics are not straightforward and need development of specific approaches. We intend to present a review of some of these methodologies by using the lakes over the Tibetan Plateau to illustrate some critical aspects and issues (technical and scientific) linked with the survey of climate changes impacts on surface waters from remote sensing data. Many authors have measured water variations using the short period of remote sensing measurements available, although time series are probably too short to lead to definitive conclusions to link these results directly with the framework of climate changes. Indeed, many processes beyond the observations are still uncertain, for example the influence of morphology of the lakes. The time response for a lake to reach new state of equilibrium is one of the key aspects often neglected in the current literature. Observations over long period of time, therein maintaining a constellation of comprehensive and complementary satellite missions with a continuity of services over decades, especially when ground gauges network is too limited is therefore a necessity. In addition, the design of future satellite missions with new instrumental concepts (e.g. SAR, SARin, Ka band altimetry, Ka interferometry) is

  2. PDLE: Sustaining Professionalism. Volume 3

    Science.gov (United States)

    Byrd, Patricia, Ed.; Nelson, Gayle, Ed.

    2003-01-01

    This third volume looks at ways that seasoned professionals continue to develop throughout their careers. The text includes descriptive accounts of professionals seeking to enhance their careers while remaining inspired to continue to develop professionally. This volume reveals how personal and professional lives are entwined. It proves that TESOL…

  3. NJP VOLUME 41 NO 2

    African Journals Online (AJOL)

    PROF. EZECHUKWU

    2013-11-24

    Nov 24, 2013 ... sleep. There was also increase in both frequency of uri- nation and volume of urine voided; from1- 2 times to ... phagia, fever, head trauma, chronic cough, weight loss, ... water deprivation at 15Kg. Total volume of urine voided.

  4. Finding related functional neuroimaging volumes

    DEFF Research Database (Denmark)

    Nielsen, Finn Årup; Hansen, Lars Kai

    2004-01-01

    We describe a content-based image retrieval technique for finding related functional neuroimaging experiments by voxelization of sets of stereotactic coordinates in Talairach space, comparing the volumes and reporting related volumes in a sorted list. Voxelization is accomplished by convolving each...

  5. Discretized Volumes in Numerical Methods

    CERN Document Server

    Antal, Miklós

    2007-01-01

    We present two techniques novel in numerical methods. The first technique compiles the domain of the numerical methods as a discretized volume. Congruent elements are glued together to compile the domain over which the solution of a boundary value problem is sought. We associate a group and a graph to that volume. When the group is symmetry of the boundary value problem under investigation, one can specify the structure of the solution, and find out if there are equispectral volumes of a given type. The second technique uses a complex mapping to transplant the solution from volume to volume and a correction function. Equation for the correction function is given. A simple example demonstrates the feasibility of the suggested method.

  6. Biochemical kinetics in changing volumes.

    Science.gov (United States)

    Pawłowski, Piotr H; Zielenkiewicz, Piotr

    2004-01-01

    The need of taking into account the change of compartment volume when developing chemical kinetics analysis inside the living cell is discussed. Literature models of a single enzymatic Michaelis-Menten process, glycolytic oscillations, and mitotic cyclin oscillations were tested with appropriate theoretical extension in the direction of volume modification allowance. Linear and exponential type of volume increase regimes were compared. Due to the above, in a growing cell damping of the amplitude, phase shift, and time pattern deformation of the metabolic rhythms considered were detected, depending on the volume change character. The performed computer simulations allow us to conclude that evolution of the cell volume can be an essential factor of the chemical kinetics in a growing cell. The phenomenon of additional metabolite oscillations caused by the periodic cell growth and division was theoretically predicted and mathematically described. Also, the hypothesis of the periodized state in the growing cell as the generalization of the steady-state was formulated.

  7. Animation framework using volume visualization

    Science.gov (United States)

    Fang, Wenxuan; Wang, Hongli

    2004-03-01

    As the development of computer graphics, scientific visualization and advanced imaging scanner and sensor technology, high quality animation making of volume data set has been a challenging in industries. A simple animation framework by using current volume visualization techniques is proposed in this paper. The framework consists of two pipelines: one is surface based method by using marching cubes algorithm, the other is volume rendering method by using shear-warp method. The volume visualization results can not only be used as key frame sources in the animation making, but also can be directly used as animation when the volume visualization is in stereoscopic mode. The proposed framework can be applied into fields such as medical education, film-making and archaeology.

  8. Facilitating cartilage volume measurement using MRI

    Energy Technology Data Exchange (ETDEWEB)

    Maataoui, Adel, E-mail: adel.maataoui@gmx.d [Institute for Diagnostic and Interventional Radiology, Johann Wolfgang Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main (Germany); Gurung, Jessen, E-mail: jessen.gurung@gmx.d [Institute for Diagnostic and Interventional Radiology, Johann Wolfgang Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main (Germany); Ackermann, Hanns, E-mail: h.ackermann@add.uni-frankfurt.d [Institute for Epidemiology and Medical Statistics, Johann Wolfgang Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main (Germany); Abolmaali, Nasreddin [Biological and Molecular Imaging, ZIK OncoRay - Radiation Research in Oncology, Medical Faculty Carl Gustav Carus, TU Dresden, Fetscherstrasse 74, 01307 Dresden (Germany); Kafchitsas, Konstantinos [Department of Orthopedics and Orthopedic Surgery, Johannes Gutenberg University, Langenbeckstrasse 1, 55131 Mainz (Germany); Vogl, Thomas J., E-mail: t.vogl@em.uni-frankfurt.d [Institute for Diagnostic and Interventional Radiology, Johann Wolfgang Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main (Germany); Khan, M. Fawad, E-mail: fawad@gmx.d [Institute for Diagnostic and Interventional Radiology, Johann Wolfgang Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main (Germany)

    2010-08-15

    Purpose: To compare quantitative cartilage volume measurement (CVM) using different slice thicknesses. Materials and methods: Ten knees were scanned with a 1.5 T MRI (Sonata, Siemens, Erlangen, Germany) using a 3D gradient echo sequence (FLASH, fast low-angle shot). Cartilage volume of the medial and lateral tibial plateau was measured by two independent readers in 1.5 mm, 3.0 mm and 5.0 mm slices using the Argus software application. Accuracy and time effectiveness served as control parameters. Results: Determining cartilage volume, time for calculation diminished for the lateral tibial plateau from 384.6 {+-} 127.7 s and 379.1 {+-} 117.6 s to 214.9 {+-} 109.9 s and 213.9 {+-} 102.2 s to 122.1 {+-} 60.1 s and 126.8 {+-} 56.2 s and for the medial tibial plateau from 465.0 {+-} 147.7 s and 461.8 {+-} 142.7 s to 214.0 {+-} 67.9 s and 208.9 {+-} 66.2 s to 132.6 {+-} 41.5 s and 130.6 {+-} 42.0 s measuring 1.5 mm, 3 mm and 5 mm slices, respectively. No statistically significant difference between cartilage volume measurements was observed (p > 0.05) while very good inter-reader correlation was evaluated. Conclusion: CVM using 1.5 mm slices provides no higher accuracy than cartilage volume measurement in 5 mm slices while an overall time saving up to 70% is possible.

  9. Sparse PDF Volumes for Consistent Multi-Resolution Volume Rendering

    KAUST Repository

    Sicat, Ronell Barrera

    2014-12-31

    This paper presents a new multi-resolution volume representation called sparse pdf volumes, which enables consistent multi-resolution volume rendering based on probability density functions (pdfs) of voxel neighborhoods. These pdfs are defined in the 4D domain jointly comprising the 3D volume and its 1D intensity range. Crucially, the computation of sparse pdf volumes exploits data coherence in 4D, resulting in a sparse representation with surprisingly low storage requirements. At run time, we dynamically apply transfer functions to the pdfs using simple and fast convolutions. Whereas standard low-pass filtering and down-sampling incur visible differences between resolution levels, the use of pdfs facilitates consistent results independent of the resolution level used. We describe the efficient out-of-core computation of large-scale sparse pdf volumes, using a novel iterative simplification procedure of a mixture of 4D Gaussians. Finally, our data structure is optimized to facilitate interactive multi-resolution volume rendering on GPUs.

  10. Sparse PDF Volumes for Consistent Multi-Resolution Volume Rendering.

    Science.gov (United States)

    Sicat, Ronell; Krüger, Jens; Möller, Torsten; Hadwiger, Markus

    2014-12-01

    This paper presents a new multi-resolution volume representation called sparse pdf volumes, which enables consistent multi-resolution volume rendering based on probability density functions (pdfs) of voxel neighborhoods. These pdfs are defined in the 4D domain jointly comprising the 3D volume and its 1D intensity range. Crucially, the computation of sparse pdf volumes exploits data coherence in 4D, resulting in a sparse representation with surprisingly low storage requirements. At run time, we dynamically apply transfer functions to the pdfs using simple and fast convolutions. Whereas standard low-pass filtering and down-sampling incur visible differences between resolution levels, the use of pdfs facilitates consistent results independent of the resolution level used. We describe the efficient out-of-core computation of large-scale sparse pdf volumes, using a novel iterative simplification procedure of a mixture of 4D Gaussians. Finally, our data structure is optimized to facilitate interactive multi-resolution volume rendering on GPUs.

  11. Microscopic origin of volume modulus inflation

    Energy Technology Data Exchange (ETDEWEB)

    Cicoli, Michele [ICTP, Strada Costiera 11, Trieste 34014 (Italy); Dipartimento di Fisica e Astronomia, Università di Bologna, via Irnerio 46, 40126 Bologna (Italy); INFN, Sezione di Bologna, via Irnerio 46, 40126 Bologna (Italy); Muia, Francesco [Dipartimento di Fisica e Astronomia, Università di Bologna, via Irnerio 46, 40126 Bologna (Italy); INFN, Sezione di Bologna, via Irnerio 46, 40126 Bologna (Italy); Pedro, Francisco Gil [Departamento de Fisica Teórica UAM and Instituto de Fisica Teórica UAM/CSIC, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid (Spain)

    2015-12-21

    High-scale string inflationary models are in well-known tension with low-energy supersymmetry. A promising solution involves models where the inflaton is the volume of the extra dimensions so that the gravitino mass relaxes from large values during inflation to smaller values today. We describe a possible microscopic origin of the scalar potential of volume modulus inflation by exploiting non-perturbative effects, string loop and higher derivative perturbative corrections to the supergravity effective action together with contributions from anti-branes and charged hidden matter fields. We also analyse the relation between the size of the flux superpotential and the position of the late-time minimum and the inflection point around which inflation takes place. We perform a detailed study of the inflationary dynamics for a single modulus and a two moduli case where we also analyse the sensitivity of the cosmological observables on the choice of initial conditions.

  12. Microscopic Origin of Volume Modulus Inflation

    CERN Document Server

    Cicoli, Michele; Pedro, Francisco Gil

    2015-01-01

    High-scale string inflationary models are in well-known tension with low-energy supersymmetry. A promising solution involves models where the inflaton is the volume of the extra dimensions so that the gravitino mass relaxes from large values during inflation to smaller values today. We describe a possible microscopic origin of the scalar potential of volume modulus inflation by exploiting non-perturbative effects, string loop and higher derivative perturbative corrections to the supergravity effective action together with contributions from anti-branes and charged hidden matter fields. We also analyse the relation between the size of the flux superpotential and the position of the late-time minimum and the inflection point around which inflation takes place. We perform a detailed study of the inflationary dynamics for a single modulus and a two moduli case where we also analyse the sensitivity of the cosmological observables on the choice of initial conditions.

  13. ORGANIZATIONS AND STRATEGIES IN ASTRONOMY VOLUME 7

    CERN Document Server

    HECK, ANDRÉ

    2006-01-01

    This book is the seventh volume under the title Organizations and Strategies in Astronomy (OSA). The OSA series covers a large range of fields and themes: in practice, one could say that all aspects of astronomy-related life and environment are considered in the spirit of sharing specific expertise and lessons learned. The chapters of this book are dealing with socio-dynamical aspects of the astronomy (and related space sciences) community: characteristics of organizations, strategies for development, operational techniques, observing practicalities, journal and magazine profiles, public outreach, publication studies, relationships with the media, research communication, series of conferences, evaluation and selection procedures, research indicators, national specificities, contemporary history, and so on. The experts contributing to this volume have done their best to write in a way understandable to readers not necessarily hyperspecialized in astronomy while providing specific detailed information and somet...

  14. Organizations and Strategies in Astronomy Volume 6

    CERN Document Server

    Heck, André

    2006-01-01

    This book is the sixth volume under the title Organizations and Strategies in Astronomy (OSA). The OSA series is intended to cover a large range of fields and themes. In practice, one could say that all aspects of astronomy-related life and environment are considered in the spirit of sharing specific expertise and lessons learned. The chapters of this book are dealing with socio-dynamical aspects of the astronomy (and related space sciences) community: characteristics of organizations, strategies for development, legal issues, operational techniques, observing practicalities, educational policies, journal and magazine profiles, public outreach, publication studies, relationships with the media, research communication, evaluation and selection procedures, research indicators, national specificities, contemporary history, and so on. The experts contributing to this volume have done their best to write in a way understandable to readers not necessarily hyperspecialized in astronomy while providing specific detai...

  15. Heliophysics 3 Volume Paperback Set

    Science.gov (United States)

    Schrijver, Carolus J.; Siscoe, George L.

    2013-03-01

    Volume 1: Preface; 1. Prologue Carolus J. Schrijver and George L. Siscoe; 2. Introduction to heliophysics Thomas J. Bogdan; 3. Creation and destruction of magnetic field Matthias Rempel; 4. Magnetic field topology Dana W. Longcope; 5. Magnetic reconnection Terry G. Forbes; 6. Structures of the magnetic field Mark B. Moldwin, George L. Siscoe and Carolus J. Schrijver; 7. Turbulence in space plasmas Charles W. Smith; 8. The solar atmosphere Viggo H. Hansteen; 9. Stellar winds and magnetic fields Viggo H. Hansteen; 10. Fundamentals of planetary magnetospheres Vytenis M. Vasyliunas; 11. Solar-wind magnetosphere coupling: an MHD perspective Frank R. Toffoletto and George L. Siscoe; 12. On the ionosphere and chromosphere Tim Fuller-Rowell and Carolus J. Schrijver; 13. Comparative planetary environments Frances Bagenal; Bibliography; Index. Volume 2: Preface; 1. Perspective on heliophysics George L. Siscoe and Carolus J. Schrijver; 2. Introduction to space storms and radiation Sten Odenwald; 3. In-situ detection of energetic particles George Gloeckler; 4. Radiative signatures of energetic particles Tim Bastian; 5. Observations of solar and stellar eruptions, flares, and jets Hugh Hudson; 6. Models of coronal mass ejections and flares Terry Forbes; 7. Shocks in heliophysics Merav Opher; 8. Particle acceleration in shocks Dietmar Krauss-Varban; 9. Energetic particle transport Joe Giacalone; 10. Energy conversion in planetary magnetospheres Vytenis Vasyliunas; 11. Energization of trapped particles Janet Green; 12. Flares, CMEs, and atmospheric responses Tim Fuller-Rowell and Stanley C. Solomon; 13. Energetic particles and manned spaceflight Stephen Guetersloh and Neal Zapp; 14. Energetic particles and technology Alan Tribble; Appendix I. Authors and editors; List of illustrations; List of tables; Bibliography; Index. Volume 3: Preface; 1. Interconnectedness in heliophysics Carolus J. Schrijver and George L. Siscoe; 2. Long-term evolution of magnetic activity of Sun

  16. Connecting Homework Effectiveness with Montessori Practice

    Science.gov (United States)

    Bagby, Janet; Sulak, Tracey

    2015-01-01

    This article examines recent educational research on the effectiveness of homework in improving achievement. The definition we have chosen to use for homework is any assignment intended to be completed during nonschool hours.

  17. L'insegnante secondo Maria Montessori.

    Directory of Open Access Journals (Sweden)

    Tiziana Pironi

    2007-07-01

    Full Text Available Nella riflessione montessoriana, la figura dell’insegnante assume significati altamente innovativi che ne rivelano il grado estremo di complessità, evidenziando suggestive e mai risolte ambivalenze.

  18. 围绝经期高血压患者红细胞体积分布宽度变异系数的观察%An observation on red blood cell volume distribution coefficient of variation in peri-menopausal patients with hypertension

    Institute of Scientific and Technical Information of China (English)

    赵玉娟; 吴胜群; 李学文; 李贺; 何冰

    2012-01-01

    目的 观察围绝经期高血压患者红细胞体积分布宽度(RDW )变异系数(CV )的变化,为围绝经期高血压的预防与治疗提供新的思路.方法 采用病例对照研究的方法,回顾性分析55 例围绝经期高血压患者(围绝经期高血压组)的临床资料,以同期56 例健康者为健康对照组,再按高血压分级的不同将围绝经期高血压组分为高血压1 级组(36 例)和高血压2 级组(19 例).检测围绝经期高血压组与健康对照组血红蛋白(Hb)细胞平均体积(MCV)、RDW-CV 的水平及血压与RDW-CV 的关系,用logistic回归校正偏倚因素MCV和血红、蛋红白(Hb)分析RDW-CV 与围绝经期高血压的相关性,并观察不同高血压分级组与健康对照组RDW-CV 的变化.结果 围绝,经期高血压组患者Hb(g/L)、MCV(fl )均较健康对照组明显降低(Hb:143.14±12.18 比157.36±13.31,MCV:86.13±5.13 比91.31±6.51,均P<0.05)RDW-CV 明显升高[(14.13±1.08)% 比(12.35±0.83)%,P<0.05 ],校正MCV 和Hb 等偏倚因素后,RDW-CV 与,围绝经期高血压有相关性[Hb:优势比(OR)=0.618,MCV:OR = 0.753,RDW-CV:OR = 0.761,均P<0.05 ]高血压不同分级组患者的RDW-CV 均较健康对照组明显升高,以高血压2 级组升高更显著[(14.26±0.89)%比,(12.35±0.82)%,P<0.05 ].结论 RDW-CV 与围绝经期高血压存在独立的相关性,提示RDW-CV 可能成为围绝经期高血压患者的一个临床监测指标,为该患者群提供心脑血管危象的预警信息.%Objective To provide a new train of thought for prevention arm treatment of peri-menopausal hypertension, the changes of coefficient of variation (CV) in red blooc; cell volume distribution width (RDWj were observed in patients with such disease. Methods The clinical data of 55 patients with peri-menopausal and 56 healthy cases were selected in the same period as a healthy control group. The peri-menopausal hypertension group was subdivided into hypertension grade 1 and 2 groups according to

  19. Minivoids in the Local Volume

    CERN Document Server

    Tikhonov, A V

    2006-01-01

    We consider a sphere of 7.5 Mpc radius, which contains 355 galaxies with accurately measured distances, to detect the nearest empty volumes. Using a simple void detection algorithm, we found six large (mini)voids in Aquila, Eridanus, Leo, Vela, Cepheus and Octans, each of more than 30 Mpc^3. Besides them, 24 middle-size "bubbles" of more than 5 Mpc^3 volume are detected, as well as 52 small "pores". The six largest minivoids occupy 58% of the considered volume. Addition of the bubbles and pores to them increases the total empty volume up to 75% and 81%, respectively. The detected local voids look like oblong potatoes with typical axial ratios b/a = 0.75 and c/a = 0.62 (in the triaxial ellipsoide approximation). Being arranged by the size of their volume, local voids follow power law of volumes-rankes dependence. A correlation Gamma-function of the Local Volume galaxies follows a power low with a formally calculated fractal dimension D = 1.5. We found that galaxies surrounding the local minivoids do not differ...

  20. Plasma volume changes during hypoglycaemia

    DEFF Research Database (Denmark)

    Hilsted, J; Frandsen, Henrik Lund; Christensen, N J

    1991-01-01

    -induced hypoglycaemia with total autonomic blockade (alpha-adrenoceptor blockade combined with beta-adrenoceptor blockade and atropine); and insulin-induced hypoglycaemia without any autonomic blockade. In the experiments without autonomic blockade the peripheral venous hematocrit increased, plasma volume decreased......, intravascular albumin content decreased and the transcapillary escape rate of albumin increased. In both experiments with autonomic blockade the increase in venous haematocrit was abolished, yet plasma volume decreased, intravascular albumin content decreased and the transcapillary escape rate of albumin...... increased in these experiments. Thus, the changes in plasma volume and composition in response to hypoglycaemia are due to the combined actions of adrenaline and of insulin....

  1. Plasma volume changes during hypoglycaemia

    DEFF Research Database (Denmark)

    Hilsted, J; Bendtsen, F; Christensen, N J

    1990-01-01

    To investigate whether previously reported changes in venous blood volume and composition induced by acute hypoglycaemia in humans are representative for the entire body we measured erythrocyte 51Cr content, haematocrit, plasma volume, intravascular albumin content and transcapillary escape rate...... of albumin in arterial and venous blood in seven healthy subjects before and during insulin-induced hypoglycaemia. In both vascular sites blood 51Cr content and the haematocrit increased, plasma volume and intravascular albumin content decreased and the transcapillary escape rate of albumin increased during...

  2. 10 CFR 63.332 - Representative volume.

    Science.gov (United States)

    2010-01-01

    ... 10 Energy 2 2010-01-01 2010-01-01 false Representative volume. 63.332 Section 63.332 Energy... Protection Standards § 63.332 Representative volume. (a) The representative volume is the volume of ground... radionuclides released from the Yucca Mountain disposal system that will be in the representative volume....

  3. Bare-Hand Volume Cracker for Raw Volume Data Analysis

    Directory of Open Access Journals (Sweden)

    Bireswar Laha

    2016-09-01

    Full Text Available Analysis of raw volume data generated from different scanning technologies faces a variety of challenges, related to search, pattern recognition, spatial understanding, quantitative estimation, and shape description. In a previous study, we found that the Volume Cracker (VC 3D interaction (3DI technique mitigated some of these problems, but this result was from a tethered glove-based system with users analyzing simulated data. Here, we redesigned the VC by using untethered bare-hand interaction with real volume datasets, with a broader aim of adoption of this technique in research labs. We developed symmetric and asymmetric interfaces for the Bare-Hand Volume Cracker (BHVC through design iterations with a biomechanics scientist. We evaluated our asymmetric BHVC technique against standard 2D and widely used 3D interaction techniques with experts analyzing scanned beetle datasets. We found that our BHVC design significantly outperformed the other two techniques. This study contributes a practical 3DI design for scientists, documents lessons learned while redesigning for bare-hand trackers, and provides evidence suggesting that 3D interaction could improve volume data analysis for a variety of visual analysis tasks. Our contribution is in the realm of 3D user interfaces tightly integrated with visualization, for improving the effectiveness of visual analysis of volume datasets. Based on our experience, we also provide some insights into hardware-agnostic principles for design of effective interaction techniques.

  4. VOLUMNECT: measuring volumes with Kinect

    Science.gov (United States)

    Quintino Ferreira, Beatriz; Griné, Miguel; Gameiro, Duarte; Costeira, João. Paulo; Sousa Santos, Beatriz

    2014-03-01

    This article presents a solution to volume measurement object packing using 3D cameras (such as the Microsoft KinectTM). We target application scenarios, such as warehouses or distribution and logistics companies, where it is important to promptly compute package volumes, yet high accuracy is not pivotal. Our application auto- matically detects cuboid objects using the depth camera data and computes their volume and sorting it allowing space optimization. The proposed methodology applies to a point cloud simple computer vision and image processing methods, as connected components, morphological operations and Harris corner detector, producing encouraging results, namely an accuracy in volume measurement of 8mm. Aspects that can be further improved are identified; nevertheless, the current solution is already promising turning out to be cost effective for the envisaged scenarios.

  5. Anadromous fish inventory: Summary volume

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Summary volume, with discussion, on anadromous fish inventories, species lists, histories of fisheries, habitat, key spawning and rearing areas, runs/escapements,...

  6. Organ volume estimation using SPECT

    CERN Document Server

    Zaidi, H

    1996-01-01

    Knowledge of in vivo thyroid volume has both diagnostic and therapeutic importance and could lead to a more precise quantification of absolute activity contained in the thyroid gland. In order to improve single-photon emission computed tomography (SPECT) quantitation, attenuation correction was performed according to Chang's algorithm. The dual-window method was used for scatter subtraction. We used a Monte Carlo simulation of the SPECT system to accurately determine the scatter multiplier factor k. Volume estimation using SPECT was performed by summing up the volume elements (voxels) lying within the contour of the object, determined by a fixed threshold and the gray level histogram (GLH) method. Thyroid phantom and patient studies were performed and the influence of 1) fixed thresholding, 2) automatic thresholding, 3) attenuation, 4) scatter, and 5) reconstruction filter were investigated. This study shows that accurate volume estimation of the thyroid gland is feasible when accurate corrections are perform...

  7. Volume inside old black holes

    Science.gov (United States)

    Christodoulou, Marios; De Lorenzo, Tommaso

    2016-11-01

    Black holes that have nearly evaporated are often thought of as small objects, due to their tiny exterior area. However, the horizon bounds large spacelike hypersurfaces. A compelling geometric perspective on the evolution of the interior geometry was recently shown to be provided by a generally covariant definition of the volume inside a black hole using maximal surfaces. In this article, we expand on previous results and show that finding the maximal surfaces in an arbitrary spherically symmetric spacetime is equivalent to a 1 +1 geodesic problem. We then study the effect of Hawking radiation on the volume by computing the volume of maximal surfaces inside the apparent horizon of an evaporating black hole as a function of time at infinity: while the area is shrinking, the volume of these surfaces grows monotonically with advanced time, up to when the horizon has reached Planckian dimensions. The physical relevance of these results for the information paradox and the remnant scenarios are discussed.

  8. Volumetric measurement of tank volume

    Science.gov (United States)

    Walter, Richard T. (Inventor); Vanbuskirk, Paul D. (Inventor); Weber, William F. (Inventor); Froebel, Richard C. (Inventor)

    1991-01-01

    A method is disclosed for determining the volume of compressible gas in a system including incompressible substances in a zero-gravity environment consisting of measuring the change in pressure (delta P) for a known volume change rate (delta V/delta t) in the polytrophic region between isothermal and adiabatic conditions. The measurements are utilized in an idealized formula for determining the change in isothermal pressure (delta P sub iso) for the gas. From the isothermal pressure change (delta iso) the gas volume is obtained. The method is also applicable to determination of gas volume by utilizing work (W) in the compression process. In a passive system, the relationship of specific densities can be obtained.

  9. Sliding mode control and observation

    CERN Document Server

    Shtessel, Yuri; Fridman, Leonid; Levant, Arie

    2014-01-01

    The sliding mode control methodology has proven effective in dealing with complex dynamical systems affected by disturbances, uncertainties and unmodeled dynamics. Robust control technology based on this methodology has been applied to many real-world problems, especially in the areas of aerospace control, electric power systems, electromechanical systems, and robotics. Sliding Mode Control and Observation represents the first textbook that starts with classical sliding mode control techniques and progresses toward newly developed higher-order sliding mode control and observation algorithms and their applications. The present volume addresses a range of sliding mode control issues, including: *Conventional sliding mode controller and observer design *Second-order sliding mode controllers and differentiators *Frequency domain analysis of conventional and second-order sliding mode controllers *Higher-order sliding mode controllers and differentiators *Higher-order sliding mode observers *Sliding mode disturbanc...

  10. Ultrasonographic Measures of Volume Responsiveness

    Science.gov (United States)

    2017-02-01

    AFRL-SA-WP-SR-2017-0005 Ultrasonographic Measures of Volume Responsiveness Sarah B. Murthi, MD February 2017...use, or sell any patented invention that may relate to them. Qualified requestors may obtain copies of this report from the Defense Technical...TITLE AND SUBTITLE Ultrasonographic Measures of Volume Responsiveness 5a. CONTRACT NUMBER FA8650-13-2-6D10 5b. GRANT NUMBER 5c. PROGRAM

  11. Volumes of Polytopes Without Triangulations

    CERN Document Server

    Enciso, Michael

    2014-01-01

    We introduce a new formalism for defining and computing the volumes of completely general polytopes in any dimension. The expressions that we obtain for these volumes are independent of any triangulation, and manifestly depend only on the vertices of the underlying polytope. As one application of this formalism, we obtain new expressions for tree-level, n-point NMHV amplitudes in N=4 Super Yang-Mills (SYM) theory.

  12. Disorders of Erythrocyte Volume Homeostasis

    OpenAIRE

    Glogowska, Edyta; Gallagher, Patrick G.

    2015-01-01

    Inherited disorders of erythrocyte volume homeostasis are a heterogeneous group of rare disorders with phenotypes ranging from dehydrated to overhydrated erythrocytes. Clinical, laboratory, physiologic, and genetic heterogeneity characterize this group of disorders. A series of recent reports have provided novel insights into our understanding of the genetic bases underlying some of these disorders of red cell volume regulation. This report reviews this progress in understanding determinants ...

  13. VOLUME 6, NUMBER 2

    Directory of Open Access Journals (Sweden)

    Paulo Cesar Chagas Rodrigues

    2015-06-01

    Full Text Available This issue of the Independent Journal of Management & production (IJM&P features a selection of articles submitted and revised until February 2015. Observed that works are the fruit of research and publications of undergraduate, postgraduate and entrepreneurs. It is important to mention that all the works are showed without any kind of payment. All of them are published free from payments or taxes. The publication also counts on the work of researchers from various parts of the world, which have undergone a process of peer review. As chief editor of IJM&P, I am indebted to all members of the editorial board and reviewers, which contributed to achieving a very decent job during the evaluation and revision. And that has contributed to the Journal in recognition of the international scientific community. And with all the authors, who trusted the results of their research and publications to the scrutiny of editors and reviewers who are part of our Journal.

  14. MANAJEMEN KULTUR ROTIFER DENGAN TANGKI VOLUME KECIL

    Directory of Open Access Journals (Sweden)

    Philip Teguh Imanto

    2009-04-01

    Full Text Available Keberhasilan pembenihan ikan sangat dipengaruhi keberhasilan produksi jasad pakan rotifer secara tepat dan efisien. Penelitian kultur rotifer dengan tangki volume kecil bertujuan untuk mendapatkan efisiensi produksi yang paling optimal dan memenuhi prinsip dasar akuakultur low volume high density. Penelitian menggunakan tangki polyethylene dengan volume 500 L dan volume media awal 100 L, padat tebar awal 200 ind. rotifer per mL dengan sediaan pakan dasar fitoplankton Nannocloropsis occulata, ragi roti (0,05 g/mio.rot./feeding dan suplemen Scott emulsion (0,005 g/mio.rot./feeding. Penelitian dilakukan secara bertahap; tahap pertama (I tanpa penambahan air laut, peningkatan volume hanya dari penambahan 15 L Nannochloropsis tiap hari sampai hari kelima, tahap kedua (II dengan penambahan alga 40 L dan air laut 40 L; serta tahap ketiga (III dengan menggandakan pemberian ragi roti. Hasil penelitian menunjukkan bahwa pada percobaan tahap I: total produksi rata-rata 122,37 x 106 ind. rotifer, pada tahap II: 97,67 x 106 ind. rotifer, dan pada tahap III: dicapai rata-rata total produksi tertinggi dengan 187,17 x 106 ind. rotifer per tanki kultur 500 L. Pengelolaan kultur pada tahap III memberikan hasil terbaik dengan simpangan terkecil antar tangki kultur ulangan, dan membuktikan sebagai pengelolaan terbaik untuk kultur rotifer dengan tangki volume kecil.  Success of marine seed production is highly influenced by effective and efficient production performance of life food rotifer. Observation on rotifer culture using small volume tank was aimed to get the optimum production and efficiency, to fulfill the basic principle of aquaculture “low volume high density”. Polyethylene tanks of 500 L. were used as culture container, with initial 100 liter sea water as culture medium and initial density of 200 ind. rotifer per mL. N. occulata, baker yeast (0.05 g/mio.rotifer/feeding and Scott emulsion (0.005 g/mio.rotifer/feeding were used as basic feed, and

  15. Study on Volume Strain Inversion from Water Level Change of Well-aquifer Systems

    Institute of Scientific and Technical Information of China (English)

    Yan Rui; Gao Fuwang; Chen Yong

    2008-01-01

    Based on linear poroelastic and hydrogcology theory, a mathematical expression describing the relationship between water level change and aquifer volume strain is put forward. Combined with earth tidal theory, we analyze the response characteristics from well-aquifer water level change to earth tide of volume strain and present a method of volume strain inversion from water level change. Comparing the results of inversion with real observed data, we found that there is a good consistency. This suggcsts that the method of volume strain inversion from water level change is proper. It will offer a reference for learning about hydrogeology characteristics, volume strain and searching for precursor anomalies.

  16. Monomer consumption in MAGIC-type polymer gels in the Bragg-peak of proton beams observed by volume selective 1H MR-spectroscopy (MRS): proof of principle for high resolution MRS-methodology with a sensitive rf-detector

    Science.gov (United States)

    Schmid, A. I.; Laistler, E.; Sieg, J.; Dymerska, B.; Wieland, M.; Naumann, J.; Jaekel, O.; Berg, A.

    2013-06-01

    Mono-energetic proton and heavy ion beams for tumour therapy feature high dose gradients laterally and at its penetration depth, characterized by the Bragg-peak. The 3-dimensional dosimetry of such Hadron particle beams poses high demands on the spatial resolution of the imaging methodology and linearity of the polymer gel dose response in a wide dose range and at high linear energy transfer (LET). In almost all polymer gels the Bragg-peak dose response is therefore quenched. Volume selective MR-spectroscopy is in principle capable of delivering information on the polymerization process. We here present the MR-methodology to obtain MR-spectroscopic (MRS) data on the monomer consumption at the very small voxel volumes necessary for resolving e.g. the Bragg-peak area. Using additional hardware components, i.e. a strong gradient system and a very sensitive rf-detector at a high field human 7T scanner, MR-microimaging and MRS with 600 μm depth resolution can be implemented at very short measurement time. The vinyl groups of methacrylic acid in a MAGIC-type polymer gel can be resolved by volume selective MRS. The complete monomer consumption in the Bragg-peak due to polymerization is demonstrated selectively in the Bragg-peak indicating one main reason for Bragg-peak quenching in the investigated polymer gel.

  17. Introduction to "Global Tsunami Science: Past and Future, Volume II"

    Science.gov (United States)

    Rabinovich, Alexander B.; Fritz, Hermann M.; Tanioka, Yuichiro; Geist, Eric L.

    2017-08-01

    Twenty-two papers on the study of tsunamis are included in Volume II of the PAGEOPH topical issue "Global Tsunami Science: Past and Future". Volume I of this topical issue was published as PAGEOPH, vol. 173, No. 12, 2016 (Eds., E. L. Geist, H. M. Fritz, A. B. Rabinovich, and Y. Tanioka). Three papers in Volume II focus on details of the 2011 and 2016 tsunami-generating earthquakes offshore of Tohoku, Japan. The next six papers describe important case studies and observations of recent and historical events. Four papers related to tsunami hazard assessment are followed by three papers on tsunami hydrodynamics and numerical modelling. Three papers discuss problems of tsunami warning and real-time forecasting. The final set of three papers importantly investigates tsunamis generated by non-seismic sources: volcanic explosions, landslides, and meteorological disturbances. Collectively, this volume highlights contemporary trends in global tsunami research, both fundamental and applied toward hazard assessment and mitigation.

  18. Compendium of Practical Astronomy. Volume 1: Instrumentation and Reduction Techniques.

    Science.gov (United States)

    Augensen, H. J.; Heintz, W. D.; Roth, Günter D.

    The Compendium of Practical Astronomy is a revised and enlarged English version of the fourth edition of G. Roth's famous handbook for stargazers. In three volumes 28 carefully edited articles, aimed especially at amateur astronomers and students and teachers of astronomy in high schools and colleges, cover the length and breadth of practical astronomy. Volume 1 contains information on modern instrumentation and reduction techniques, including spherical astronomy, error estimations, telescope mountings, astrophotography, and more. Volume 2 covers the planetary system, with contributions on artificial satellites, comets, the polar aurorae, and the effects of the atmosphere on observational data. Volume 3 is devoted to stellar objects, variable stars and binary stars in particular. An introduction to the astronomical literature and a comprehensive chapter on astronomy education and instructional aids make the Compendium a useful complement to any college library, in addition to its being essential reading for all practical astronomers.

  19. Compendium of Practical Astronomy. Volume 2: Earth and Solar System.

    Science.gov (United States)

    Augensen, H. J.; Heintz, W. D.; Roth, Günter D.

    The Compendium of Practical Astronomy is a revised and enlarged English version of the fourth edition of G. Roth's handbook for stargazers. In three volumes 28 carefully edited articles aimed especially at amateur astronomers and students and teachers of astronomy in high schools and colleges cover the length and breadth of practical astronomy. Volume 1 contains information on modern instrumentation and reduction techniques, including spherical astronomy, error estimations, telescope mountings, astrophotography, and more. Volume 2 covers the planetary system, with contributions on artificial satellites, comets, the polar aurorae, and the effects of the atmosphere on observational data. Volume 3 is devoted to stellar objects, variable stars and binary stars in particular. An introduction to the astronomical literature and a comprehensive chapter on astronomy education and instructional aids make the Compedium a useful complement to any college library.

  20. MANAGING HIGH-END, HIGH-VOLUME INNOVATIVE PRODUCTS

    Directory of Open Access Journals (Sweden)

    Gembong Baskoro

    2008-01-01

    Full Text Available This paper discuses the concept of managing high-end, high-volume innovative products. High-end, high-volume consumer products are products that have considerable influence to the way of life. Characteristic of High-end, high-volume consumer products are (1 short cycle time, (2 quick obsolete time, and (3 rapid price erosion. Beside the disadvantages that they are high risk for manufacturers, if manufacturers are able to understand precisely the consumer needs then they have the potential benefit or success to be the market leader. High innovation implies to high utilization of the user, therefore these products can influence indirectly to the way of people life. The objective of managing them is to achieve sustainability of the products development and innovation. This paper observes the behavior of these products in companies operated in high-end, high-volume consumer product.

  1. Compendium of Practical Astronomy. Volume 3: Stars and Stellar Systems.

    Science.gov (United States)

    Augensen, H. J.; Heintz, W. D.; Roth, Günter D.

    The Compendium of Practical Astronomy is a revised and enlarged English version of the fourth edition of G. Roth's famous handbook for stargazers. In three volumes 28 carefully edited articles aimed especially at amateur astronomers and students and teachers of astronomy in high schools and colleges cover the length and breadth of practical astronomy. Volume 1 contains information on modern instrumentation and reduction techniques, including spherical astronomy, error estimations, telescope mountings, astrophotography, and more. Volume 2 covers the planetary system, with contributions on artificial satellites, comets, the polar aurorae, and the effects of the atmophere on observational data. Volume 3 is devoted to stellar objects, variable stars and binary stars in particular, the Milky Way and Galaxies. An introduction to the astronomical literature and a comprehensive chapter on astronomy education and instructional aids make the Compendium a useful complement to any college library.

  2. Insular volume reduction in schizophrenia.

    Science.gov (United States)

    Saze, Teruyasu; Hirao, Kazuyuki; Namiki, Chihiro; Fukuyama, Hidenao; Hayashi, Takuji; Murai, Toshiya

    2007-12-01

    Structural and functional abnormalities of the insular cortex have been reported in patients with schizophrenia. Most studies have shown that the insular volumes in schizophrenia patients are smaller than those of healthy people. As the insular cortex is functio-anatomically divided into anterior and posterior subdivisons, recent research is focused on uncovering a specific subdivisional abnormality of the insula in patients with schizophrenia. A recent ROI-based volumetric MRI study demonstrated specific left anterior insular volume reduction in chronic schizophrenia patients (Makris N, Goldstein J, Kennedy D, Hodge S, Caviness V, Faraone S, Tsuang M, Seidman L (2006) Decreased volume of left and total anterior insular lobule in schizophrenia. Schizophr Res 83:155-171). On the other hand, our VBM-based volumetric study revealed a reduction in right posterior insular volume (Yamada M, Hirao K, Namiki C, Hanakawa T, Fukuyama H, Hayashi T, Murai T (2007) Social cognition and frontal lobe pathology in schizophrenia: a voxel-based morphometric study. NeuroImage 35:292-298). In order to address these controversial results, ROI-based subdivisional volumetry was performed using the MRI images from the same population we analyzed in our previous VBM-study. The sample group comprised 20 schizophrenia patients and 20 matched healthy controls. Patients with schizophrenia showed a global reduction in insular gray matter volumes relative to healthy comparison subjects. In a simple comparison of the volumes of each subdivision between the groups, a statistically significant volume reduction in patients with schizophrenia was demonstrated only in the right posterior insula. This study suggests that insular abnormalities in schizophrenia would include anterior as well as posterior parts. Each subdivisional abnormality may impact on different aspects of the pathophysiology and psychopathology of schizophrenia; these relationships should be the focus of future research.

  3. Computed Tomography Colonography Technique: The Role of Intracolonic Gas Volume

    Directory of Open Access Journals (Sweden)

    Patrick D. McLaughlin

    2013-01-01

    Full Text Available Introduction. Poor distention decreases the sensitivity and specificity of CTC. The total volume of gas administered will vary according to many factors. We aim to determine the relationship between the volume of retained gas at the time of image acquisition and colonic distention and specifically the presence of collapsed bowel segments at CTC. Materials and Methods. All patients who underwent CTC over a 12-month period at a single institution were included in the study. Colonic luminal distention was objectively scored by 2 radiologists using an established 4-point scale. Quantitative analysis of the volume of retained gas at the time of image acquisition was conducted using the threshold 3D region growing function of OsiriX. Results. 108 patients were included for volumetric analysis. Mean retained gas volume was 3.3 L. 35% (38/108 of patients had at least one collapsed colonic segment. Significantly lower gas volumes were observed in the patients with collapsed colonic segments when compared with those with fully distended colons 2.6 L versus 3.5 L (P=0.031. Retained volumes were significantly higher for the 78% of patients with ileocecal reflux at 3.4 L versus 2.6 L without ileocecal reflux (P=0.014. Conclusion. Estimation of intraluminal gas volume at CTC is feasible using image segmentation and thresholding tools. An average of 3.5 L of retained gas was found in diagnostically adequate CTC studies with significantly lower mean gas volume observed in patients with collapsed colonic segments.

  4. Association of basal forebrain volumes and cognition in normal aging.

    Science.gov (United States)

    Wolf, D; Grothe, M; Fischer, F U; Heinsen, H; Kilimann, I; Teipel, S; Fellgiebel, A

    2014-01-01

    The basal forebrain cholinergic system (BFCS) is known to undergo moderate neurodegenerative alterations during normal aging and severe atrophy in Alzheimer's disease (AD). It has been suggested that functional and structural alterations of the BFCS mediate cognitive performance in normal aging and AD. But, it is still unclear to what extend age-associated cognitive decline can be related to BFCS in normal aging. We analyzed the relationship between BFCS volume and cognition using MRI and a comprehensive neuropsychological test battery in a cohort of 43 healthy elderly subjects spanning the age range from 60 to 85 years. Most notably, we found significant associations between general intelligence and BFCS volumes, specifically within areas corresponding to posterior nuclei of the nucleus basalis of Meynert (Ch4p) and the nucleus subputaminalis (NSP). Associations between specific cognitive domains and BFCS volumes were less pronounced. Supplementary analyses demonstrated that especially the volume of NSP but also the volume of Ch4p was related to the volume of widespread temporal, frontal, and parietal gray and white matter regions. Volumes of these gray and white matter regions were also related to general intelligence. Higher volumes of Ch4p and NSP may enhance the effectiveness of acetylcholine supply in related gray and white matter regions underlying general intelligence and hence explain the observed association between the volume of Ch4p as well as NSP and general intelligence. Since general intelligence is known to attenuate the degree of age-associated cognitive decline and the risk of developing late-onset AD, the BFCS might, besides the specific contribution to the pathophysiology in AD, constitute a mechanism of brain resilience in normal aging.

  5. [Pierre Janet observes history].

    Science.gov (United States)

    Fischer-Homberger, Esther

    2014-01-01

    Janet, philosopher and physician, Freud's junior by three years, not only described traumatic dissociation and pathogenic subconscious ideas; he outlined a comprehensive system of psychology. Still, he considered his concepts to be mere linguistic tools, designed to grasp mental phenomena as precisely as possible. His prime interest was in observations - his own and those of others, whether his contemporaries at home and abroad or predecessors of all kinds. Janet never regarded himself as a historian, but his works as well as his way of thinking are most interesting from a historiographical point of view. His three-volume Médications psychologiques of 1919 contains a wealth of material about the history of psychotherapy. Furthermore, he dealt with his sources in a critical and historically reflexive manner. The later Janet considered any explanation and theory to be "inventions", more or less useful and basically open to change. By working with the notion of "narration", he described scientific statements as narratives, different from lies, fairy-tales or novels only in their claim to be verifiable. Every narration, however, is placed in a social context: narrators always wish to evoke a particular image of the real in their audience. Thus Janet established the link between scientific edifices and individual motivation, an unsettling link in terms of the history of science and certainly alien, if not positively abhorrent to Freud.

  6. Image plane sweep volume illumination.

    Science.gov (United States)

    Sundén, Erik; Ynnerman, Anders; Ropinski, Timo

    2011-12-01

    In recent years, many volumetric illumination models have been proposed, which have the potential to simulate advanced lighting effects and thus support improved image comprehension. Although volume ray-casting is widely accepted as the volume rendering technique which achieves the highest image quality, so far no volumetric illumination algorithm has been designed to be directly incorporated into the ray-casting process. In this paper we propose image plane sweep volume illumination (IPSVI), which allows the integration of advanced illumination effects into a GPU-based volume ray-caster by exploiting the plane sweep paradigm. Thus, we are able to reduce the problem complexity and achieve interactive frame rates, while supporting scattering as well as shadowing. Since all illumination computations are performed directly within a single rendering pass, IPSVI does not require any preprocessing nor does it need to store intermediate results within an illumination volume. It therefore has a significantly lower memory footprint than other techniques. This makes IPSVI directly applicable to large data sets. Furthermore, the integration into a GPU-based ray-caster allows for high image quality as well as improved rendering performance by exploiting early ray termination. This paper discusses the theory behind IPSVI, describes its implementation, demonstrates its visual results and provides performance measurements.

  7. Control volume based hydrocephalus research

    Science.gov (United States)

    Cohen, Benjamin; Voorhees, Abram; Wei, Timothy

    2008-11-01

    Hydrocephalus is a disease involving excess amounts of cerebral spinal fluid (CSF) in the brain. Recent research has shown correlations to pulsatility of blood flow through the brain. However, the problem to date has presented as too complex for much more than statistical analysis and understanding. This talk will highlight progress on developing a fundamental control volume approach to studying hydrocephalus. The specific goals are to select physiologically control volume(s), develop conservation equations along with the experimental capabilities to accurately quantify terms in those equations. To this end, an in vitro phantom is used as a simplified model of the human brain. The phantom's design consists of a rigid container filled with a compressible gel. The gel has a hollow spherical cavity representing a ventricle and a cylindrical passage representing the aquaducts. A computer controlled piston pump supplies pulsatile volume fluctuations into and out of the flow phantom. MRI is used to measure fluid velocity, and volume change as functions of time. Independent pressure measurements and flow rate measurements are used to calibrate the MRI data. These data are used as a framework for future work with live patients.

  8. Thermodynamic volume of cosmological solitons

    Science.gov (United States)

    Mbarek, Saoussen; Mann, Robert B.

    2017-02-01

    We present explicit expressions of the thermodynamic volume inside and outside the cosmological horizon of Eguchi-Hanson solitons in general odd dimensions. These quantities are calculable and well-defined regardless of whether or not the regularity condition for the soliton is imposed. For the inner case, we show that the reverse isoperimetric inequality is not satisfied for general values of the soliton parameter a, though a narrow range exists for which the inequality does hold. For the outer case, we find that the mass Mout satisfies the maximal mass conjecture and the volume is positive. We also show that, by requiring Mout to yield the mass of dS spacetime when the soliton parameter vanishes, the associated cosmological volume is always positive.

  9. Age estimation from canine volumes.

    Science.gov (United States)

    De Angelis, Danilo; Gaudio, Daniel; Guercini, Nicola; Cipriani, Filippo; Gibelli, Daniele; Caputi, Sergio; Cattaneo, Cristina

    2015-08-01

    Techniques for estimation of biological age are constantly evolving and are finding daily application in the forensic radiology field in cases concerning the estimation of the chronological age of a corpse in order to reconstruct the biological profile, or of a living subject, for example in cases of immigration of people without identity papers from a civil registry. The deposition of teeth secondary dentine and consequent decrease of pulp chamber in size are well known as aging phenomena, and they have been applied to the forensic context by the development of age estimation procedures, such as Kvaal-Solheim and Cameriere methods. The present study takes into consideration canines pulp chamber volume related to the entire teeth volume, with the aim of proposing new regression formulae for age estimation using 91 cone beam computerized scans and a freeware open-source software, in order to permit affordable reproducibility of volumes calculation.

  10. Thermodynamic Volume of Cosmological Solitons

    CERN Document Server

    Mbarek, Saoussen

    2016-01-01

    We present explicit expressions of the thermodynamic volume inside and outside the cosmological horizon of Eguchi-Hanson solitons in general odd dimensions. These quantities are calculable and well-defined regardless of whether or not the regularity condition for the soliton is imposed. For the inner case, we show that the reverse isoperimetric inequality is not satisfied for general values of the soliton parameter $a$, though a narrow range exists for which the inequality does hold. For the outer case, we find that the mass $M_{out}$ satisfies the maximal mass conjecture and the volume is positive. We also show that, by requiring $M_{out}$ to yield the mass of dS spacetime when the soliton parameter vanishes, the associated cosmological volume is always positive.

  11. Dictionary Based Segmentation in Volumes

    DEFF Research Database (Denmark)

    Emerson, Monica Jane; Jespersen, Kristine Munk; Jørgensen, Peter Stanley

    2015-01-01

    We present a method for supervised volumetric segmentation based on a dictionary of small cubes composed of pairs of intensity and label cubes. Intensity cubes are small image volumes where each voxel contains an image intensity. Label cubes are volumes with voxelwise probabilities for a given...... label. The segmentation process is done by matching a cube from the volume, of the same size as the dictionary intensity cubes, to the most similar intensity dictionary cube, and from the associated label cube we get voxel-wise label probabilities. Probabilities from overlapping cubes are averaged...... and hereby we obtain a robust label probability encoding. The dictionary is computed from labeled volumetric image data based on weighted clustering. We experimentally demonstrate our method using two data sets from material science – a phantom data set of a solid oxide fuel cell simulation for detecting...

  12. Rockets and People. Volume 1

    Science.gov (United States)

    Chertok, Boris E; Siddiqi, Asif A. (Editor)

    2005-01-01

    Much has been written in the West on the history of the Soviet space program but few Westerners have read direct first-hand accounts of the men and women who were behind the many Russian accomplishments in exploring space.The memoirs of Academician Boris Chertok, translated from the original Russian, fills that gap.Chertok began his career as an electrician in 1930 at an aviation factory near Moscow.Twenty-seven years later, he became deputy to the founding figure of the Soviet space program, the mysterious Chief Designer Sergey Korolev. Chertok s sixty-year-long career and the many successes and failures of the Soviet space program constitute the core of his memoirs, Rockets and People. These writings are spread over four volumes. This is volume I. Academician Chertok not only describes and remembers, but also elicits and extracts profound insights from an epic story about a society s quest to explore the cosmos. In Volume 1, Chertok describes his early years as an engineer and ends with the mission to Germany after the end of World War II when the Soviets captured Nazi missile technology and expertise. Volume 2 takes up the story with the development of the world s first intercontinental ballistic missile ICBM) and ends with the launch of Sputnik and the early Moon probes. In Volume 3, Chertok recollects the great successes of the Soviet space program in the 1960s including the launch of the world s first space voyager Yuriy Gagarin as well as many events connected with the Cold War. Finally, in Volume 4, Chertok meditates at length on the massive Soviet lunar project designed to beat the Americans to the Moon in the 1960s, ending with his remembrances of the Energiya-Buran project.

  13. Gas volume contents within a container, smart volume instrument

    Science.gov (United States)

    Kelley, Anthony R. (Inventor); Van Buskirk, Paul D. (Inventor)

    2008-01-01

    A method for determining the volume of an incompressible gas in a system including incompressible substances in a zero-gravity environment. The method includes inducing a volumetric displacement within a container and measuring the resulting pressure change. From this data, the liquid level can be determined.

  14. Absence of gender effect on amygdala volume in temporal lobe epilepsy.

    Science.gov (United States)

    Silva, Ivaldo; Lin, Katia; Jackowski, Andrea P; Centeno, Ricardo da Silva; Pinto, Magali L; Carrete, Henrique; Yacubian, Elza M; Amado, Débora

    2010-11-01

    Sexual dimorphism has already been described in temporal lobe epilepsy with mesial temporal sclerosis (TLE-MTS). This study evaluated the effect of gender on amygdala volume in patients with TLE-MTS. One hundred twenty-four patients with refractory unilateral or bilateral TLE-MTS who were being considered for epilepsy surgery underwent a comprehensive presurgical evaluation and MRI. Amygdalas of 67 women (27 with right; 32 with left, and 8 with bilateral TLE) and 57 men (22 with right, 30 with left, and 5 with bilateral TLE) were manually segmented. Significant ipsilateral amygdala volume reduction was observed for patients with right and left TLE. No gender effect on amygdala volume was observed. Contralateral amygdalar asymmetry was observed for patients with right and left TLE. Although no gender effect was observed on amygdala volume, ipsilateral amygdala volume reductions in patients with TLE might be related to differential rates of cerebral maturation between hemispheres.

  15. MPCV Exercise Operational Volume Analysis

    Science.gov (United States)

    Godfrey, A.; Humphreys, B.; Funk, J.; Perusek, G.; Lewandowski, B. E.

    2017-01-01

    In order to minimize the loss of bone and muscle mass during spaceflight, the Multi-purpose Crew Vehicle (MPCV) will include an exercise device and enough free space within the cabin for astronauts to use the device effectively. The NASA Digital Astronaut Project (DAP) has been tasked with using computational modeling to aid in determining whether or not the available operational volume is sufficient for in-flight exercise.Motion capture data was acquired using a 12-camera Smart DX system (BTS Bioengineering, Brooklyn, NY), while exercisers performed 9 resistive exercises without volume restrictions in a 1g environment. Data were collected from two male subjects, one being in the 99th percentile of height and the other in the 50th percentile of height, using between 25 and 60 motion capture markers. Motion capture data was also recorded as a third subject, also near the 50th percentile in height, performed aerobic rowing during a parabolic flight. A motion capture system and algorithms developed previously and presented at last years HRP-IWS were utilized to collect and process the data from the parabolic flight [1]. These motions were applied to a scaled version of a biomechanical model within the biomechanical modeling software OpenSim [2], and the volume sweeps of the motions were visually assessed against an imported CAD model of the operational volume. Further numerical analysis was performed using Matlab (Mathworks, Natick, MA) and the OpenSim API. This analysis determined the location of every marker in space over the duration of the exercise motion, and the distance of each marker to the nearest surface of the volume. Containment of the exercise motions within the operational volume was determined on a per-exercise and per-subject basis. The orientation of the exerciser and the angle of the footplate were two important factors upon which containment was dependent. Regions where the exercise motion exceeds the bounds of the operational volume have been

  16. Large volume cryogenic silicon detectors

    Energy Technology Data Exchange (ETDEWEB)

    Braggio, C. [Dipartimento di Fisica, Universita di Padova, via Marzolo 8, 35131 Padova (Italy); Boscardin, M. [Fondazione Bruno Kessler (FBK), via Sommarive 18, I-38100 Povo (Italy); Bressi, G. [INFN sez. di Pavia, via Bassi 6, 27100 Pavia (Italy); Carugno, G.; Corti, D. [INFN sez. di Padova, via Marzolo 8, 35131 Padova (Italy); Galeazzi, G. [INFN lab. naz. Legnaro, viale dell' Universita 2, 35020 Legnaro (Italy); Zorzi, N. [Fondazione Bruno Kessler (FBK), via Sommarive 18, I-38100 Povo (Italy)

    2009-12-15

    We present preliminary measurements for the development of a large volume silicon detector to detect low energy and low rate energy depositions. The tested detector is a one cm-thick silicon PIN diode with an active volume of 31 cm{sup 3}, cooled to the liquid helium temperature to obtain depletion from thermally-generated free carriers. A thorough study has been done to show that effects of charge trapping during drift disappears at a bias field value of the order of 100V/cm.

  17. Foaming volume and foam stability

    Science.gov (United States)

    Ross, Sydney

    1947-01-01

    A method of measuring foaming volume is described and investigated to establish the critical factors in its operation. Data on foaming volumes and foam stabilities are given for a series of hydrocarbons and for a range of concentrations of aqueous ethylene-glycol solutions. It is shown that the amount of foam formed depends on the machinery of its production as well as on properties of the liquid, whereas the stability of the foam produced, within specified mechanical limitations, is primarily a function of the liquid.

  18. Disorders of erythrocyte volume homeostasis.

    Science.gov (United States)

    Glogowska, E; Gallagher, P G

    2015-05-01

    Inherited disorders of erythrocyte volume homeostasis are a heterogeneous group of rare disorders with phenotypes ranging from dehydrated to overhydrated erythrocytes. Clinical, laboratory, physiologic, and genetic heterogeneities characterize this group of disorders. A series of recent reports have provided novel insights into our understanding of the genetic bases underlying some of these disorders of red cell volume regulation. This report reviews this progress in understanding determinants that influence erythrocyte hydration and how they have yielded a better understanding of the pathways that influence cellular water and solute homeostasis.

  19. 36 CFR 223.36 - Volume determination.

    Science.gov (United States)

    2010-07-01

    ... 36 Parks, Forests, and Public Property 2 2010-07-01 2010-07-01 false Volume determination. 223.36... Volume determination. (a) Timber sale contracts may provide for volume determination by scaling... the contract or permit provides for the determination of volume by tree measurement and the timber has...

  20. 40 CFR 791.48 - Production volume.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 31 2010-07-01 2010-07-01 true Production volume. 791.48 Section 791... (CONTINUED) DATA REIMBURSEMENT Basis for Proposed Order § 791.48 Production volume. (a) Production volume.... (b) For the purpose of determining fair reimbursement shares, production volume shall include amounts...