WorldWideScience

Sample records for rising middle grades

  1. Statistical Content in Middle Grades Mathematics Textbooks

    Science.gov (United States)

    Pickle, Maria Consuelo Capiral

    2012-01-01

    This study analyzed the treatment and scope of statistical concepts in four, widely-used, contemporary, middle grades mathematics textbook series: "Glencoe Math Connects," "Prentice Hall Mathematics," "Connected Mathematics Project," and "University of Chicago School Mathematics Project." There were three…

  2. Developing Middle Grades Students' MP3

    Science.gov (United States)

    Tassell, Janet; Stobaugh, Rebecca; Sheffield, Linda

    2011-01-01

    Middle grades are a critical time for capturing the interest and imagination and developing the potential of mathematically promising students. This is a time for students to make sense of mathematics, build a solid foundation and enthusiasm, and set the course for the highest levels of mathematics in the future. This is a time to explore their…

  3. Navigating middle grades: role of social contexts in middle grade school climate.

    Science.gov (United States)

    Kim, Ha Yeon; Schwartz, Kate; Cappella, Elise; Seidman, Edward

    2014-09-01

    During early adolescence, most public school students undergo school transitions, and many students experience declines in academic performance and social-emotional well-being. Theories and empirical research have highlighted the importance of supportive school environments in promoting positive youth development during this period of transition. Despite this, little is known about the proximal social and developmental contexts of the range of middle grade public schools US students attend. Using a cross-sectional dataset from the eighth grade wave of the Early Childhood Longitudinal Study-Kindergarten Cohort 1998-1999, the current study examines the middle grade school social context from the perspectives of administrators and teachers in public schools with typical grade configurations (k-8 schools, middle schools, and junior high schools) and how it relates to students' perceptions of school climate. We find that administrators and teachers in k-8 schools perceive a more positive school social context, controlling for school structural and demographic characteristics. This school social context, in turn, is associated with students' perceptions of their schools' social and academic climate. Implications for educational policy and practice are discussed.

  4. The Value of Action Research in Middle Grades Education

    Science.gov (United States)

    Caskey, Micki M.

    2006-01-01

    Action research is one of the relevant methodologies for addressing research questions and issues in middle grades education. Accounting for nearly 20% of published middle grades research studies (Hough, 2003), action research has emerged as an important and appropriate research method. In addition to reviewing the historical context, this article…

  5. OPEC Middle East plans for rising world demand amid uncertainty

    International Nuclear Information System (INIS)

    Ismail, I.A.H.

    1996-01-01

    The Middle Eastern members of the Organization of Petroleum Exporting Countries must plan for huge increases in oil production capacity yet wonder whether markets for the new output will develop as expected. With worldwide oil consumption rising and non-OPEC output likely to reach its resource limits soon, OPEC member countries face major gains in demand for their crude oil. To meet the demand growth, those with untapped resources will have to invest heavily in production capacity. Most OPEC members with such resources are in the Middle East. But financing the capacity investments remains a challenge. Some OPEC members have opened up to foreign equity participation in production projects, and others may eventually do so as financial pressures grow. That means additions to the opportunities now available to international companies in the Middle East. Uncertainties, however, hamper planning and worry OPEC. Chief among them are taxation and environmental policies of consuming-nation governments. This paper reviews these concerns and provides data on production, pricing, capital investment histories and revenues

  6. Connecting with the Arts: A Workshop for Middle Grades Teachers

    Science.gov (United States)

    Annenberg Media, 2005

    2005-01-01

    "Connecting with the Arts: A Workshop for Middle Grades Teachers" is a video workshop for middle school teachers of the arts and other subjects. The workshop includes eight hour-long video programs and a companion workshop guide and Web site. The workshop shows middle school teachers why and how to integrate the arts (dance, music, theatre, and…

  7. Middle Grades Teachers' Use of Motivational Practices to Support Their Visions and Identities as Middle Grades Educators

    Science.gov (United States)

    Wall, Amanda; Miller, Samuel D.

    2015-01-01

    This qualitative case study explored 4 middle grades teachers' naïve theories of motivation, and the links between these theories and their thoughts and actions related to motivation. Their naïve theories of motivation stemmed from their overall visions for teaching, and their strong identities as middle grades educators. These naïve theories also…

  8. Teaching Middle-Grades Mathematics through Financial Literacy

    Science.gov (United States)

    Crawford-Ferre, Heather Glynn; Wiest, Lynda R.; Vega, Stephanie

    2016-01-01

    Because financial literacy is an important skill for middle-grades students, this article suggests numerous personal financial literacy tasks for use in the mathematics classroom. Also provided are specifics for implementing one of these tasks to address mathematical content.

  9. Strategic Reading Groups: Guiding Readers in the Middle Grades

    Science.gov (United States)

    Berne, Jennifer; Degener, Sophie C.

    2012-01-01

    Strategic grouping can transform reading instruction in the middle grades from a hit-or-miss learning experience to a targeted, responsive one. This book features a practical and field-tested model for small-group differentiated reading instruction in Grades 4-8. Jennifer Berne and Sophie C. Degener offer a clear, detailed discussion of how to…

  10. Creating a Middle Grades Environment that Significantly Improves Student Achievement

    Science.gov (United States)

    L'Esperance, Mark E.; Lenker, Ethan; Bullock, Ann; Lockamy, Becky; Mason, Cathy

    2013-01-01

    This article offers an overview of the framework that Sampson County Public Schools (North Carolina) used to critically reflect on the current state of their middle grades schools. The article also highlights the changes that resulted from the district-wide analysis and the ways in which these changes led to a significant increase in the academic…

  11. How Middle Grade Teachers Think about Algebraic Reasoning

    Science.gov (United States)

    Glassmeyer, David; Edwards, Belinda

    2016-01-01

    Algebraic reasoning is an essential habit of mind for building conceptual knowledge in K-12 mathematics, yet little is known about how middle school mathematics teachers think about algebraic reasoning. In this article we describe a research project examining how algebraic reasoning was considered by grades 6, 7, or 8 mathematics teachers in a…

  12. Teamwork Evaluation by Middle Grade Students in Inclusive Classrooms

    Science.gov (United States)

    Strom, Paris S.; Thompson, MaryEllen; Strom, Robert D.

    2013-01-01

    Teamwork skills are considered essential in a work environment characterized by diversity and interdependence. Consequently, middle grade teachers arrange cooperative learning so students can acquire experience with solving problems in groups. Teachers also acknowledge that they are frustrated because appropriate instruments are lacking to track…

  13. The Rise of Middle Kingdoms: Emerging Economies in Global Trade

    OpenAIRE

    Gordon H. Hanson

    2012-01-01

    In this paper, I examine changes in international trade associated with the integration of low- and middle-income countries into the global economy. Led by China and India, the share of developing economies in global exports more than doubled between 1994 and 2008. One feature of new trade patterns is greater South-South trade. China and India have booming demand for imported raw materials, which they use to build cities and factories. Industrialization throughout the South has deepened globa...

  14. Rising temperatures, rising tensions : climate change and the risk of violent conflict in the Middle East

    Energy Technology Data Exchange (ETDEWEB)

    Brown, O.; Crawford, A.

    2009-07-01

    Scientific evidence suggests that climate change will have significant impacts to food security, disease prevalence, population distribution, and water availability in the Middle East. This paper discussed the likelihood of increased conflict as a result of climatic change in Syria, Lebanon, Israel, Jordan, and the occupied Palestinian territory. A range of consultations and interviews with experts were analyzed in order to determine security threats in the region over the next 40 years. The study showed that the legacy of conflict in the region will hamper its ability to adapt to climate change. Climate change is likely to increase competition for water resources, intensify food shortages, and hinder economic growth. Climate change may also lead to forced migration and tensions with existing refugee populations and increase the militarization of natural resources. Strategies to pursue sustainable development in the Levant region included fostering a culture of conservation, addressing core tensions related to agriculture and water development, and reducing greenhouse gas (GHG) emissions. Regional cooperation is needed to develop effective approaches for GHG emissions reduction plans. 68 refs., 3 tabs., 22 figs.

  15. Rising temperatures, rising tensions : climate change and the risk of violent conflict in the Middle East

    International Nuclear Information System (INIS)

    Brown, O.; Crawford, A.

    2009-01-01

    Scientific evidence suggests that climate change will have significant impacts to food security, disease prevalence, population distribution, and water availability in the Middle East. This paper discussed the likelihood of increased conflict as a result of climatic change in Syria, Lebanon, Israel, Jordan, and the occupied Palestinian territory. A range of consultations and interviews with experts were analyzed in order to determine security threats in the region over the next 40 years. The study showed that the legacy of conflict in the region will hamper its ability to adapt to climate change. Climate change is likely to increase competition for water resources, intensify food shortages, and hinder economic growth. Climate change may also lead to forced migration and tensions with existing refugee populations and increase the militarization of natural resources. Strategies to pursue sustainable development in the Levant region included fostering a culture of conservation, addressing core tensions related to agriculture and water development, and reducing greenhouse gas (GHG) emissions. Regional cooperation is needed to develop effective approaches for GHG emissions reduction plans. 68 refs., 3 tabs., 22 figs.

  16. The Power of Picturebooks: Resources that Support Language and Learning in Middle Grade Classrooms

    Science.gov (United States)

    Roser, Nancy; Martinez, Miriam; Fowler-Amato, Michelle

    2011-01-01

    This piece explores the instructional possibilities of picturebooks in middle grade classrooms, illustrating the central tenets of how to effectively introduce these resources to middle grade students. Through today's multiplicity of illustrated texts, students can discover the finest uses of language, as well as encounter images that inform,…

  17. Middle Grades Research: Not Yet Mature, but No Longer a Child.

    Science.gov (United States)

    Mac Iver, Douglas J.; Epstein, Joyce L.

    1993-01-01

    Summarizes research on middle level schools and students that contributes to ongoing debates concerning grade span, school size, grouping of students, departmentalization, curriculum, instruction, advisory groups, interdisciplinary teaming, school-transition activities, extra-help programs, and student evaluation practices in the middle grades.…

  18. A Case Study of Middle Grades Leadership in a Conversion Charter School

    Science.gov (United States)

    Bickmore, Dana L.; Dowell, Margaret-Mary Sulentic

    2015-01-01

    This 3-year case study examined middle grades principal leadership in a takeover charter school. The researcher analyzed principal and teacher interviews, field notes, and documents in relationship to a middle grades model of principal leadership. Results suggest the principals' limited experience, organizational factors unique to takeover charter…

  19. English Language Arts Scores among Sixth Grade Students Enrolled on an Elementary versus Middle School Campus

    Science.gov (United States)

    Johnson, La-Trice

    2013-01-01

    A K-12 school district located in southern California was faced with overcrowding at 1of its middle schools for the 2011-2012 school year. This project study was designed to explore if an elementary or middle school campus was best in supporting students' academics while they were in transition to 6th grade middle school. Maslow's hierarchy of…

  20. Teaching the Classics in the Middle Grades: Connecting with the Roots of Western Civilization.

    Science.gov (United States)

    Wood, Robin H.

    1998-01-01

    At a New Jersey school, students spend one year studying each of three time periods: ancient Egypt in fourth grade; Greece in fifth grade; and Rome and the Middle Ages in sixth grade. The history curriculum becomes the focal point for other areas (art, music, drama, language arts, science, geography, and math). Teachers use primary sources and…

  1. Technological Studies at Thomas Edison Middle School. Grades 6-7-8.

    Science.gov (United States)

    Foster, Patrick N.

    This technology studies curriculum for grades 6-8 is a plan for each middle school student to experience technology education for approximately 60 days (1 trimester of a 180-day school year) in each grade. Section A provides definitions; structure or content for grade-level programs with science and technology unifiers (unifying curricular…

  2. Paradoxes of Social Rise. The Expansion of Middle Classes and the Financial Crisis

    Directory of Open Access Journals (Sweden)

    Christoph Deutschmann

    2010-07-01

    Full Text Available The article views the current financial crisis from the background of long term socio-economic changes in advanced industrial societies. Central points are the rise of middle classes, the accumulation of financial wealth in the upper strata of middle classes in combination with an increasing concentration of financial assets at the level of the top rich, and the advance of pension and investment funds as collective actors at financial markets. The paper analyses the interconnections between these developments in the framework of a multilevel model, culminating in the thesis of a collective “Buddenbrooks”-effect: a structural upward mobility of society will lead to an increasing imbalance at capital markets because a strongly rising volume of financial assets searching profitable investment opportunities will go parallel with a decline of the social reservoir of solvent entrepreneurial debtors. Therefore, advanced industrial economies are faced with chronic excess liquidity and export surpluses at capital markets, leading to the build-up of speculative bubbles and subsequent crashes. The author argues that the present crisis cannot be understood properly without taking account of these backgrounds.

  3. Bullying Experiences and Compromised Academic Performance across Middle School Grades

    Science.gov (United States)

    Juvonen, Jaana; Wang, Yueyan; Espinoza, Guadalupe

    2011-01-01

    The goal of the study was to examine whether bullying experiences are associated with lower academic performance across middle school among urban students.The ethnically diverse sample was drawn from a longitudinal study of 2,300 sixth graders (44% Latino, 26% African American, 10% Asian, 10% White, and 10% mixed) from 11 public middle schools.…

  4. Improving Deficient Listening Skills in the Language Arts Program at the Middle Grades.

    Science.gov (United States)

    Alonso, Laura

    A project developed a program for improving deficient student-to-student listening skills. The targeted population consisted of 18 seventh-grade middle school students in a culturally diverse, lower middle class community in a near-western suburb of Chicago. The problem of deficient listening skills was evident through teacher observation and…

  5. Benefits of Single-Gender Education: Perceptions of Middle Grade Teachers

    Science.gov (United States)

    Nattress, Deborah A.

    2013-01-01

    This quantitative study used descriptive statistics to evaluate data obtained from 179 middle grade teachers, grades 5-9, currently working in a single-gender environment, including public, private, and charter schools, with regard to the academic and behavioral benefits of single-gender education. The study used a survey created by Dr. John Fry…

  6. Formative Assessment Jump-Starts a Middle Grades Differentiation Initiative

    Science.gov (United States)

    Doubet, Kristina J.

    2012-01-01

    A rural middle level school had stalled in its third year of a district-wide differentiation initiative. This article describes the way teachers and the leadership team engaged in collaborative practices to put a spotlight on formative assessment. Teachers learned to systematically gather formative assessment data from their students and to use…

  7. Promoting Creativity in the Middle Grades Language Arts Classroom

    Science.gov (United States)

    Batchelor, Katherine E.; Bintz, William P.

    2013-01-01

    Middle level educators around the country aim to create a classroom environment and a way of teaching that is developmentally responsive, challenging, empowering, and equitable for every student. One way to ensure this is to include instruction that promotes creativity. This article offers guiding principles and shares instructional lessons that…

  8. The Impact of Multitasking Learning Environments in the Middle Grades

    Science.gov (United States)

    Drinkwine, Timothy

    2013-01-01

    This research study considers the status of middle school students in the 21st century in terms of their tendency to multitask in their daily lives and the overall influence this multitasking has on teaching and learning environments. Student engagement in the learning environment and students' various learning styles are discussed as primary…

  9. Reading Fluency in the Middle and Secondary Grades

    Directory of Open Access Journals (Sweden)

    David D. PAIGE

    2014-10-01

    Full Text Available In this article we discuss the specifics of reading fluency and provide suggestions for identifying when reading is fluent and when it is not. We then discuss the important role that reading fluency plays in the attainment of literacy achievement and briefly review research results that highlight the relationship between fluency and comprehension. This is followed by a discussion of reading fluency and comprehension data gathered by one of the authors in India that highlight the possibilities for the acquisition of fluent reading in those learning English as a second language. Following a review of strategies to assist middle and secondary teachers with the development of fluent reading in their students, we conclude with a discussion of word study strategies that promote syllabic and morphemic analysis. Such strategies aid readers in the development of word automaticity and encourage the development of fluent reading.

  10. Mourning Child Grief Support Group Curriculum: Middle Childhood Edition, Grades 3-6.

    Science.gov (United States)

    Lehmann, Linda; Jimerson, Shane R.; Gaasch, Ann

    The Mourning Child Early Childhood grief support curriculum is intended for use with late elementary and middle school-aged children, specifically children in grades three through six, who have experienced the death of someone special to them. It is designed for use by professionals who work in schools, hospitals, hospices, mental health agencies,…

  11. Middle Grades' School Models and Their Impact on Early Adolescent Self-Esteem

    Science.gov (United States)

    Booth, Margaret Zoller; Sheehan, Heather Chase; Earley, Mark A.

    2007-01-01

    Throughout the world, school grade structures are most variable during the early adolescent years when students can find themselves in a variety of school models. This paper investigates the impact of two popular school models in the United States (middle school and K-8) on the self-esteem and self-concept of early adolescents. Based on mixed…

  12. Investigating Vocabulary and Reading Strategies with Middle Grades English Language Learners: A Research Synthesis

    Science.gov (United States)

    Cisco, Brooke Kandel; Padron, Yolanda

    2012-01-01

    Recent data indicate that many adolescent English language learners (ELLs) comprehend English texts at only a limited literal level. The purpose of this research synthesis was to systematically identify and describe the research related to the English reading comprehension of middle grades ELLs while also making practical connections to…

  13. Black Girls' Achievement in Middle Grades Mathematics: How Can Socializing Agents Help?

    Science.gov (United States)

    Young, Jemimah L.; Young, Jamaal Rashad; Capraro, Mary Margaret

    2017-01-01

    The middle grades mathematics classroom is full of transitions that students must overcome to become successful long-term learners of mathematics. This transition can be exorbitantly more tumultuous for Black girls who must overcome gender and racial mathematics achievement stereotypes. Mathematics identities and achievement socialization trends…

  14. Middle Grades to High School: Mending a Weak Link. Research Brief.

    Science.gov (United States)

    Cooney, Sondra; Bottoms, Gene

    This research brief describes a study of the readiness for high school of eighth-graders who participated in the Southern Regional Education Board's (SREB) Middle Grades Assessment in spring 2000. The assessment included testing in reading, math, and science, and surveys of students and teachers. Following the 2000-01 school year, SREB gathered…

  15. Too Close for (Brain) Comfort: Improving Science Vocabulary Learning in the Middle Grades

    Science.gov (United States)

    Shore, Rebecca; Ray, Jenna; Goolkasian, Paula

    2013-01-01

    This article describes how researchers take a multidisciplinary approach to investigating how middle grades students learn science vocabulary. The authors investigated teaching strategies for increasing retention of science vocabulary with seventh graders and stumbled upon an interesting finding that was not even a target for their study, yet it…

  16. The "School Safety & Security Questionnaire": Middle Grades Students' Perceptions of Safety at School

    Science.gov (United States)

    Miller, Janice Williams; Nickell, Linda K.

    2008-01-01

    This study presents the development and basic psychometric characteristics of the "School Safety and Security Questionnaire" (SSSQ). This new measure was constructed to assess middle grade students' perceptions of safety and security during the school year. The content validity of the theoretically-based instrument was assessed and the measure was…

  17. Planning, Implementing, and Assessing an Authentic Performance Task in Middle Grades Classrooms

    Science.gov (United States)

    Barnes, Nicole C.; Urbankowski, Daniel

    2014-01-01

    As young adolescents, middle grades students experience a wide variety of changes related to their cognitive capabilities, social and emotional well-being, and use of self-regulation strategies. Authentic performance tasks challenge students to apply their knowledge and skills to realistic problems to create products or performances--consistent…

  18. Data Analysis and Statistics in Middle Grades: An Analysis of Content Standards

    Science.gov (United States)

    Sorto, M. Alejandra

    2011-01-01

    The purpose of the study reported herein was to identify the important aspects of statistical knowledge that students in the middle school grades in United States are expected to learn as well as what the teachers are expected to teach. A systematic study of 49 states standards and one set of national standards was used to identify these important…

  19. A Phenomenological Study of Middle Grade Female and Male Students' Single-Sex Mathematical Experiences

    Science.gov (United States)

    Simpson, Amber; Che, S. Megan

    2016-01-01

    Utilizing a descriptive phenomenological design, this study examines the lived experiences of seven middle grade students, four females and three males, enrolled in a single-sex mathematics classroom within a coeducational school setting. The intent of the study is to understand, from students themselves, about the experience of single-sex…

  20. Direct behavior rating as a school-based behavior screener for elementary and middle grades.

    Science.gov (United States)

    Chafouleas, Sandra M; Kilgus, Stephen P; Jaffery, Rose; Riley-Tillman, T Chris; Welsh, Megan; Christ, Theodore J

    2013-06-01

    The purpose of this study was to investigate how Direct Behavior Rating Single Item Scales (DBR-SIS) involving targets of academically engaged, disruptive, and respectful behaviors function in school-based screening assessment. Participants included 831 students in kindergarten through eighth grades who attended schools in the northeastern United States. Teachers provided behavior ratings for a sample of students in their classrooms on the DBR-SIS, the Behavioral and Emotional Screening System (Kamphaus & Reynolds, 2007), and the Student Risk Screening Scale (Drummond, 1994). Given variations in rating procedures to accommodate scheduling differences across grades, analysis was conducted separately for elementary school and middle school grade levels. Results suggested that the recommended cut scores, the combination of behavior targets, and the resulting conditional probability indices varied depending on grade level grouping (lower elementary, upper elementary, middle). For example, for the lower elementary grade level grouping, a combination of disruptive behavior (cut score=2) and academically engaged behavior (cut score=8) was considered to offer the best balance among indices of diagnostic accuracy, whereas a cut score of 1 for disruptive behavior and 8 for academically engaged behavior were recommended for the upper elementary school grade level grouping and cut scores of 1 and 9, respectively, were suggested for middle school grade level grouping. Generally, DBR-SIS cut scores considered optimal for screening using single or combined targets including academically engaged behavior and disruptive behavior by offering a reasonable balance of indices for sensitivity (.51-.90), specificity (.47-.83), negative predictive power (.94-.98), and positive predictive power (.14-.41). The single target of respectful behavior performed poorly across all grade level groups, and performance of DBR-SIS targets was relatively better in the elementary school than middle

  1. Middle School Math Acceleration and Equitable Access to Eighth-Grade Algebra: Evidence from the Wake County Public School System

    Science.gov (United States)

    Dougherty, Shaun M.; Goodman, Joshua S.; Hill, Darryl V.; Litke, Erica G.; Page, Lindsay C.

    2015-01-01

    Taking algebra by eighth grade is considered an important milestone on the pathway to college readiness. We highlight a collaboration to investigate one district's effort to increase middle school algebra course-taking. In 2010, the Wake County Public Schools began assigning middle school students to accelerated math and eighth-grade algebra based…

  2. Virginia tech freshman class becoming more competitive; Rise in grades and test scores noted

    OpenAIRE

    Virginia Tech News

    2004-01-01

    Admission to Virginia Tech continues to become more competitive as applicants report higher grade point averages and test scores than previous years. The incoming class of 4,975 students has an average grade point average (GPA) of 3.68 and SAT 1203, up from 3.60 GPA and 1197 SAT in 2003.

  3. Rise and fall: two sides of a coin of middle aged women's perceptions of reproductive: a qualitative study.

    Science.gov (United States)

    Reyhani, Mitra; Kazemi, Ashraf; Keshvari, Mahrokh

    2018-02-02

    The present study was conducted to determine the perceptions of middle-aged women of reproductive changes. The present study was a qualitative research with a content analysis approach. The participants were 30 middle-aged women whose perceptions of reproductive changes had been collected on in-depth semi-structured interviews. The data were analyzed using the Graneheim and Lundman's inductive content analysis method. The main themes extracted from the data were a sense of "fall" and "the beginning of a new life cycle." A feeling of fall was formed from the subthemes "deterioration of youth," "the dusk of femininity," and "fade-out of the gender roles." The theme "beginning of a new life cycle" was formed from the subthemes of "acceptance," "sophistication," and "maturity." Middle-aged women had a wide range of emotions experienced from the reproductive changes ranging from a feeling of decline to that of excellence and rise.

  4. The Rise of the Middle Class in the People's Republic of China

    OpenAIRE

    Zhang Yuan; Guanghua Wan; Khor, Niny

    2011-01-01

    Using {dollar}2–{dollar}20 purchasing power parity per capita daily income as the definition of middle class, Zhang Yuan, Guanghua Wan, and Niny Khor find that majority of households in the People's Republic of China have become middle class by 2007. This is especially impressive given that around 40% of households were still considered poor in 1991. This paper discusses these trends, their main determinants, and geographical distributions.

  5. Burnout among middle-grade doctors of tertiary care hospital in Saudi Arabia.

    Science.gov (United States)

    Agha, Adnan; Mordy, Ayedh; Anwar, Eram; Saleh, Noha; Rashid, Imran; Saeed, Mona

    2015-01-01

    Burnout Syndrome is a mental condition caused by chronic exposure to work related stress and is identified by the presence of any of the three distinct elements of emotional exhaustion, depersonalization and lack of personal accomplishment. Middle grade doctors are the backbone of any tertiary care hospital / medical institution, partaking in unscheduled and inpatient care. The aim of this study was to assess the presence of burnout syndrome in the middle grade doctors in a tertiary care hospital in Saudi Arabia. The study was conducted at the Armed Forces Hospital Southern Region, Khamis Mushyt, from August to October 2012 in departments with at least fifty inpatient admissions per month and with at least five middle grade (Resident, Registrar and Senior Registrar) doctors. The departments were Obstetrics and Gynecology, Internal Medicine, Pediatrics, Emergency, General Surgery and Nephrology. This was a cross sectional descriptive and analytical study using the Maslach Burnout Inventory-Health Services Survey and a self-reported stressor-identifying questionnaire to ascertain possible precursors of, or contributing factors to, Burnout Syndrome. A total of 96 proformas/questionnaires were collected anonymously to maintain confidentiality and burnout syndrome was identified in as high as 88.5% of the respondents with high emotional exhaustion in 68.8%, high depersonalization in 63.6% and low personal accomplishment in 38.5%. The authors concluded that burnout syndrome is high among the middle-grade doctors in this medical facility and that urgent steps are needed to address this problem to ensure that these physicians remain physically and mentally healthy.

  6. Middle school science curriculum design and 8th grade student achievement in Massachusetts public schools

    Science.gov (United States)

    Clifford, Betsey A.

    The Massachusetts Department of Elementary and Secondary Education (DESE) released proposed Science and Technology/Engineering standards in 2013 outlining the concepts that should be taught at each grade level. Previously, standards were in grade spans and each district determined the method of implementation. There are two different methods used teaching middle school science: integrated and discipline-based. In the proposed standards, the Massachusetts DESE uses grade-by-grade standards using an integrated approach. It was not known if there is a statistically significant difference in student achievement on the 8th grade science MCAS assessment for students taught with an integrated or discipline-based approach. The results on the 8th grade science MCAS test from six public school districts from 2010 -- 2013 were collected and analyzed. The methodology used was quantitative. Results of an ANOVA showed that there was no statistically significant difference in overall student achievement between the two curriculum models. Furthermore, there was no statistically significant difference for the various domains: Earth and Space Science, Life Science, Physical Science, and Technology/Engineering. This information is useful for districts hesitant to make the change from a discipline-based approach to an integrated approach. More research should be conducted on this topic with a larger sample size to better support the results.

  7. Navigating Polycentric Governance from a Citizen’s Perspective: The Rising New Middle Classes Respond

    NARCIS (Netherlands)

    A.F. Fowler (Alan); K. Biekart (Kees)

    2015-01-01

    markdownabstractA global growth in the middle class is anticipated to influence development choices and the evolution of domestic polities associated with a ‘rising‘ South. Responding to the local effects of a multipolar world order will add to a citizen’s existing need to navigate national

  8. Was Africa Rising? Narratives of Development Success and Failure among the Mozambican Middle Class

    OpenAIRE

    Brooks, Andrew Richard

    2017-01-01

    In the 2000s and 2010s a narrative of ‘Africa Rising’ was popularised by businesses, donors, media and political leaders. High economic growth rates, increased investment from the BRICS and the export of natural resources supported claims of development success. One group held up as beneficiaries were the emerging African middle class. Despite the optimism, poverty ratios remained stable and impoverishment was widespread. Change was occurring, but the gains were uneven. Mozambique had a liber...

  9. Navigating Polycentric Governance from a Citizen’s Perspective: The Rising New Middle Classes Respond

    OpenAIRE

    Fowler, Alan; Biekart, Kees

    2015-01-01

    markdownabstractA global growth in the middle class is anticipated to influence development choices and the evolution of domestic polities associated with a ‘rising‘ South. Responding to the local effects of a multipolar world order will add to a citizen’s existing need to navigate national polycentrism. Exploration of this citizen-centric phenomenon introduces a new, comprehensive analytic framework that combines public with private governance, the latter categorised as modern, traditional a...

  10. Challenges Inherent in the Design and Implementation of After-School Intervention Programs for Middle Grade Underachieving Readers

    Science.gov (United States)

    Velten, Justin; Mokhtari, Kouider

    2016-01-01

    In this brief report, we share three challenges we encountered when designing and implementing an after school intervention program for an ethnically diverse group of middle grade underachieving readers. We also offer practical solutions to help guide middle school teams in anticipating and addressing potential problems when putting in place…

  11. The Influence of Grade-Span Configuration on Student Performance in K-8 Schools and Middle Schools in New Jersey

    Science.gov (United States)

    Keegan, Edward W.

    2010-01-01

    Recent literature casts unfavorable light upon the middle school as the most appropriate grade configuration in which to effectively educate young adolescents. The current criticism of middle schools may be fueled, in part, by "A Nation at Risk," the "No Child Left Behind Act," and a growing subsequent emphasis on…

  12. APPLYING THE VERNACULAR MODEL TO HIGH-RISE RESIDENTIAL DEVELOPMENT IN THE MIDDLE EAST AND NORTH AFRICA

    Directory of Open Access Journals (Sweden)

    Amer Al-Jokhadar

    2017-07-01

    Full Text Available In the age of globalisation and continuous urbanisation, architects have a greater responsibility to design residential buildings with comfortable and sustainable environments. However, sustainable solutions should not concern themselves only with utilising technology, but also with creating synergies amongst a community’s social, cultural, historical, and environmental aspects. This research focuses on the implications of this wider definition of sustainability within the hot-arid climates of the Middle East and North Africa. Most of the current high-rise residential buildings in these regions do not promote social cohesion as they have been constructed without consideration for local identity and lifestyle. In contrast, vernacular courtyard dwellings and neighbourhoods offer good examples of socially cohesive and healthy environments. Yet, vernacular houses might not be compatible with pressures of modern construction. The question then becomes how to maintain the relationship between the spatial, social and environmental aspects while employing the latest technologies and materials. This paper presents the different qualities of vernacular houses and neighbourhoods in the different regions of the Middle East and North Africa. Social and spatial relationships of different cases are assessed, through a typological analysis approach using a developed syntactic-geometric model, to trace the lifestyle and the cultural values of the society. The aim is a parametric exploration of appropriate sustainable solutions that facilitate the synergy of socio-climatic requirements, the well-being qualities of the residents, and the specifics of culture, time and people while designing sustainable high-rise developments.

  13. The gray divorce revolution: rising divorce among middle-aged and older adults, 1990-2010.

    Science.gov (United States)

    Brown, Susan L; Lin, I-Fen

    2012-11-01

    Our study documents how the divorce rate among persons aged 50 and older has changed between 1990 and 2010 and identifies the sociodemographic correlates of divorce among today's middle-aged and older adults. We used data from the 1990 U.S. Vital Statistics Report and the 2010 American Community Survey (ACS) to examine the change in the divorce rate over time. ACS data were analyzed to determine the sociodemographic correlates of divorce. The divorce rate among adults aged 50 and older doubled between 1990 and 2010. Roughly 1 in 4 divorces in 2010 occurred to persons aged 50 and older. Demographic characteristics, economic resources, and the marital biography were associated with the risk of divorce in 2010. The rate of divorce was 2.5 times higher for those in remarriages versus first marriages, whereas the divorce rate declined as marital duration rose. The traditional focus of gerontological research on widowhood must be expanded to include divorce as another form of marital dissolution. Over 600,000 people aged 50 and older got divorced in 2010 but little is known about the predictors and consequences of divorces that occur during middle and later life.

  14. The Gray Divorce Revolution: Rising Divorce Among Middle-Aged and Older Adults, 1990–2010

    Science.gov (United States)

    2012-01-01

    Purpose. Our study documents how the divorce rate among persons aged 50 and older has changed between 1990 and 2010 and identifies the sociodemographic correlates of divorce among today’s middle-aged and older adults. Design and Method. We used data from the 1990 U.S. Vital Statistics Report and the 2010 American Community Survey (ACS) to examine the change in the divorce rate over time. ACS data were analyzed to determine the sociodemographic correlates of divorce. Results. The divorce rate among adults aged 50 and older doubled between 1990 and 2010. Roughly 1 in 4 divorces in 2010 occurred to persons aged 50 and older. Demographic characteristics, economic resources, and the marital biography were associated with the risk of divorce in 2010. The rate of divorce was 2.5 times higher for those in remarriages versus first marriages, whereas the divorce rate declined as marital duration rose. Implications. The traditional focus of gerontological research on widowhood must be expanded to include divorce as another form of marital dissolution. Over 600,000 people aged 50 and older got divorced in 2010 but little is known about the predictors and consequences of divorces that occur during middle and later life. PMID:23052366

  15. ESCOLEX: a grade-level lexical database from European Portuguese elementary to middle school textbooks.

    Science.gov (United States)

    Soares, Ana Paula; Medeiros, José Carlos; Simões, Alberto; Machado, João; Costa, Ana; Iriarte, Álvaro; de Almeida, José João; Pinheiro, Ana P; Comesaña, Montserrat

    2014-03-01

    In this article, we introduce ESCOLEX, the first European Portuguese children's lexical database with grade-level-adjusted word frequency statistics. Computed from a 3.2-million-word corpus, ESCOLEX provides 48,381 word forms extracted from 171 elementary and middle school textbooks for 6- to 11-year-old children attending the first six grades in the Portuguese educational system. Like other children's grade-level databases (e.g., Carroll, Davies, & Richman, 1971; Corral, Ferrero, & Goikoetxea, Behavior Research Methods, 41, 1009-1017, 2009; Lété, Sprenger-Charolles, & Colé, Behavior Research Methods, Instruments, & Computers, 36, 156-166, 2004; Zeno, Ivens, Millard, Duvvuri, 1995), ESCOLEX provides four frequency indices for each grade: overall word frequency (F), index of dispersion across the selected textbooks (D), estimated frequency per million words (U), and standard frequency index (SFI). It also provides a new measure, contextual diversity (CD). In addition, the number of letters in the word and its part(s) of speech, number of syllables, syllable structure, and adult frequencies taken from P-PAL (a European Portuguese corpus-based lexical database; Soares, Comesaña, Iriarte, Almeida, Simões, Costa, …, Machado, 2010; Soares, Iriarte, Almeida, Simões, Costa, França, …, Comesaña, in press) are provided. ESCOLEX will be a useful tool both for researchers interested in language processing and development and for professionals in need of verbal materials adjusted to children's developmental stages. ESCOLEX can be downloaded along with this article or from http://p-pal.di.uminho.pt/about/databases .

  16. Supporting Social and Cognitive Growth Among Disadvantaged Middle-Grades Students in TASC After-School Projects

    Directory of Open Access Journals (Sweden)

    Christina A. Russell

    2006-09-01

    Full Text Available The field of after-school programming remains rife with unanswered questions. What constitutes quality in after-school programs? Are after-school opportunities valuable for participants regardless of their quality? Are differences in quality associated with differences in participant benefit? This sub-study of the longitudinal evaluation of The After-School Corporation (TASC looks at how after-school opportunities with varying features affect urban middle-grades (6-8 adolescents who live in impoverished circumstances. Supported by the William T. Grant Foundation, the study explores the associations between after-school project features and the social and cognitive outcomes of disadvantaged middle-grades participants in TASC programs. The study relies on data collected during the 2001-02 and 2002-03 school years in eight TASC projects serving middle-grades students.

  17. Guess Again: Will Changing the Grades Save Middle-Level Education?

    Science.gov (United States)

    Beane, James; Lipka, Richard

    2006-01-01

    Blaming unsatisfactory student achievement on the middle school concept is a case of mistaken identity. Too many middle schools have failed to fully implement the middle school concept. Based on statements from the Carnegie Council and the National Middle School Association, the middle school concept calls for improved academic achievement for all…

  18. Reflections on Teaching and Learning the Arts: A Middle-Grade Classroom and a High School for the Arts

    Science.gov (United States)

    Barilla, Rosemary; Brown, Tina Boyer

    2015-01-01

    Rosemary Barilla, a middle-grade language arts teacher, inspired by her own dedication to the arts, describes the ways she integrates the fine arts into her classroom program that is designed to teach reading and writing. Tina Boyer Brown, a founding teacher at The Chicago High School for the Arts (ChiArts®), describes the school as a place where…

  19. A Comparative Study of Teachers' Attitudes and Practices regarding Homework in the Elementary, Middle, and High School Grades

    Science.gov (United States)

    Peltier, Courtney Pisarich

    2011-01-01

    The purpose of this study was to examine the attitudes and practices of elementary, middle, and high school teachers regarding homework. In addition, the study sought to find if there was a relationship between the teachers' attitudes and practices of homework, as well as finding the differences between the grade levels. The questionnaire used…

  20. Externalizing Problems in Fifth Grade: Relations with Productive Activity, Maternal Sensitivity, and Harsh Parenting from Infancy through Middle Childhood

    Science.gov (United States)

    Bradley, Robert H.; Corwyn, Robert F.

    2007-01-01

    This study used data from the National Institute of Child Health and Human Development's Study of Early Child Care and Youth Development to examine relations between parenting, self-control, and externalizing behavior from infancy through 5th grade. Results indicate that self-control measured during middle childhood mediates relations between…

  1. Preventing Student Disengagement and Keeping Students on the Graduation Path in Urban Middle-Grades Schools: Early Identification and Effective Interventions

    Science.gov (United States)

    Balfanz, Robert; Herzog, Liza; Iver, Douglas J. Mac

    2007-01-01

    This article considers the practical, conceptual, and empirical foundations of an early identification and intervention system for middle-grades schools to combat student disengagement and increase graduation rates in our nation's cities. Many students in urban schools become disengaged at the start of the middle grades, which greatly reduces the…

  2. The Rise of the Abbasid Public Sphere: The Case of al-Mutanabbī and Three Middle Ranking Patrons

    Directory of Open Access Journals (Sweden)

    Mahdy Ali, Samer

    2008-12-01

    Full Text Available The tenth century in Iraq and Syria saw an unprecedented rise in the number of canonical poets who were delivering glorious praise hymns (madīḥ to middling members of society. Scholars have posed many theories in the past 30 years to explain the function and purpose of praise hymns for royalty and rulers, but why would ordinary men who had no hope of rulership pay painful sums to commission praise hymns in their favor? This article examines the emergence of a new kind of sociability and patronage in the tenth century that enabled middling people to form alliances and exercise influence in shaping ideals of government, leadership and manhood. Examples are given of poems to patrons of middle rank who gain glory and influence via the artistic endorsement of al-Mutanabbī (d. 965: The first ode restores the public dignity of a nineteen-year-old soldier who lost his face in battle; in the second ode, the poet glorifies and defends a state clerk who had little-known Sufi leanings; in the third ode, the poet vindicates an unmasked pseudo- Muslim who was in private a Christian. Using J. Habermas’s theory of the “Public Sphere,” I show the way these odes illustrate how middling members of society gained influence in a public sphere of participation and took measures to preserve that influence.

    En el siglo X, y en la zona de Siria e Iraq, el número de poetas canónicos que dedicaron panegíricos (madīḥ a miembros no destacados de la sociedad experimentó un incremento sin precedentes. A lo largo de los últimos treinta años, especialistas en este campo han formulado diversas teorías sobre los himnos de alabanza dedicados a la realeza y a los gobernantes, pero ¿qué llevó a personas corrientes, sin ninguna aspiración de llegar a gobernar, a pagar grandes cantidades de dinero por himnos de alabanza en su honor? Este artículo plantea la aparición de un nuevo tipo de sociabilidad y un nuevo patronazgo en el siglo X

  3. Evolution of high-rise construction in Leningrad - Saint Petersburg in the middle of the 20th - Early 21st centuries: projects and Implementation

    Science.gov (United States)

    Vaytens, Andrey; Rusanov, Gennadiy; Skryabin, Pavel

    2018-03-01

    One of the most important issues in national urban planning is arrangement of high-rise buildings in the largest cities of Russia. This issue becomes especially acute in such cities as Saint Petersburg, which has unique architectural and urban-planning heritage preserved to a great extent. In this regard, it seems important to trace the evolution of high-rise construction development and arrangement in Leningrad - Saint Petersburg in the middle of the 20th — early 21st centuries. The goal of the article is to consider high-rise construction development regarding both public and residential buildings in comparison of project ideas and results of their implementation in the 1940s-2000s. Prerequisites and issues of high-rise construction of that period are considered. Particular attention is paid to changes in the official urban-planning policy, regulatory framework and attitude of city authorities to high-rise construction. The study was carried out with the consideration of the following historic periods differing in their urban-planning policy: the late 1940s-1950s; 1960s; 1970-1980s; 1990s; 2000s-2010s. Economical prerequisites of high-rise construction and their influence on the modern urban-planning policy during the post-Soviet period are considered. In conclusion, an attempt is made to determine tendencies of high-rise construction development in Saint Petersburg.

  4. Evaluating the implementation and impacts of middle grades inquiry-based engineering design modules

    Science.gov (United States)

    Harlan, Jessica M.

    This dissertation uses a format where I present and discuss three articles that were written in conjunction with my work on a research and evaluation team. The articles are based on a multi-year project researching and evaluating the design, development, and implementation of a middle grades integrated Science, Technology, Engineering, and Mathematics (STEM) program. Each of the articles demonstrates the complexity in researching and evaluating curricular development in multifaceted, rapidly changing environments. While the focus of each article differs, they all examine research and evaluation in the context of the design and development of middle grades engineering-design modules. The selected articles address challenges associated with assessing program objectives and evaluating program quality in complex education programs.The first article, presented in Chapter 2, provides an overview of the nature of the EYE program and examines the extent to which participation in the EYE program resulted in the achievement of program objectives. There is evidence that EYE Module participation has a positive impact on participating students as well as teachers. This study also revealed challenges associated with determining the impact of program participation simultaneously with program revisions and assessment development. The second article, presented in Chapter 3, examined the evaluation of fidelity of implementation of inquiry-oriented educational programs. This article was intended to examine one way of triangulating information to determine fidelity while considering variation in implementation consistent with program theories of learning. When applying this model to implementation of the EYE program, we found many teachers were implementing the modules with low to moderate fidelity, especially math teachers. The third article, presented in Chapter 4, examined the factor structure of an occupational values scale intended to measure student interest in STEM careers

  5. Effects of Extracurricular Participation during Middle School on Academic Motivation and Achievement at Grade 9

    Science.gov (United States)

    Im, Myung Hee; Hughes, Jan N.; Cao, Qian; Kwok, Oi-man

    2016-01-01

    We investigated the effect of participating in two domains of extracurricular activities (sports and performance arts/clubs) in Grades 7 and 8 on Grade 9 academic motivation and letter grades, above baseline performance. Participants were 483 students (55% male; 33% Euro-American, 25% African American, and 39% Latino). Propensity score weighting…

  6. Prevalence and Associated Factors of Peer Victimization (Bullying among Grades 7 and 8 Middle School Students in Kuwait

    Directory of Open Access Journals (Sweden)

    Ahmad J. Abdulsalam

    2017-01-01

    Full Text Available Background. Peer victimization (bullying is a universal phenomenon with detrimental effects. The aim of this study is to determine the prevalence and factors of bullying among grades 7 and 8 middle school students in Kuwait. Methods. The study is a cross-sectional study that includes a sample of 989 7th and 8th grade middle school students randomly selected from schools. The Revised Olweus Bully/Victim Questionnaire was used to measure different forms of bullying. After adjusting for confounding, logistic regression identified the significant associated factors related to bullying. Results. Prevalence of bullying was 30.2 with 95% CI 27.4 to 33.2% (3.5% bullies, 18.9% victims, 7.8% bully victims. Children with physical disabilities and one or both non-Kuwaiti parents or children with divorced/widowed parents were more prone to be victims. Most victims and bullies were found to be current smokers. Bullies were mostly in the fail/fair final school grade category, whereas victims performed better. The logistic regression showed that male gender (adjusted odds ration = 1.671, p=0.004, grade 8 student (adjusted odds ratio = 1.650, p=0.004, and student with physical disabilities (adjusted odds ratio = 1.675, p=0.003, were independently associated with bullying behavior. Conclusions. There is a need for a school-wide professional intervention program and improvement in the students’ adjustment to school environment to control bullying behavior.

  7. Behavioral and psychosocial effects of two middle school sexual health education programs at tenth-grade follow-up.

    Science.gov (United States)

    Markham, Christine M; Peskin, Melissa F; Shegog, Ross; Baumler, Elizabeth R; Addy, Robert C; Thiel, Melanie; Escobar-Chaves, Soledad Liliana; Robin, Leah; Tortolero, Susan R

    2014-02-01

    An earlier randomized controlled trial found that two middle school sexual education programs-a risk avoidance (RA) program and a risk reduction (RR) program-delayed initiation of sexual intercourse (oral, vaginal, or anal sex) and reduced other sexual risk behaviors in ninth grade. We examined whether these effects extended into 10th grade. Fifteen middle schools were randomly assigned to RA, RR, or control conditions. Follow-up surveys were conducted with participating students in 10th grade (n = 1,187; 29.2% attrition). Participants were 60% female, 50% Hispanic, and 39% black; seventh grade mean age was 12.6 years. In 10th grade, compared with the control condition, both programs significantly delayed anal sex initiation in the total sample (RA: adjusted odds ratio [AOR], .64, 95% confidence interval [CI], .42-.99; RR: AOR, .65, 95% CI, .50-.84) and among Hispanics (RA: AOR, .53, 95% CI, .31-.91; RR: AOR, .82, 95% CI, .74-.93). Risk avoidance students were less likely to report unprotected vaginal sex, either by using a condom or by abstaining from sex (AOR: .61, 95% CI, .45-.85); RR students were less likely to report recent unprotected anal sex (AOR: .34, 95% CI, .20-.56). Both programs sustained positive impact on some psychosocial outcomes. Although both programs delayed anal sex initiation into 10th grade, effects on the delayed initiation of oral and vaginal sex were not sustained. Additional high school sexual education may help to further delay sexual initiation and reduce other sexual risk behaviors in later high school years. Copyright © 2014 Society for Adolescent Health and Medicine. All rights reserved.

  8. Girls Doing Science: A Case Study of Science Literacy in All-Female Middle Grade Classrooms

    Science.gov (United States)

    Faller, Susan Elisabeth

    In the face of low adolescent literacy rates (NCES, 2012), concerns about the nation's prospects of remaining competitive in science and technology (Hill, Corbett, & St. Rose, 2010), a persistent gender gap in science (NCES, 2012; Reilly, 2012), and the continued rollout of college- and career-ready standards, there is a need to focus on adolescent girls' science literacy. Such science literacy involves not only general knowledge about science, but also the ability to engage in the advanced reading and writing practices fundamental to doing science (Norris & Phillips, 2003). In this thesis, I present three articles with findings that respond to this need. They are the results of a multiple-case embedded (Yin, 2009) study that I conducted over the course of 7 months in four science classrooms (grades 5 through 8; 50 students) taught by a single teacher in a small all-female middle school. I collected in-depth data focused on science literacy from multiple sources, including (a) fieldnotes (Emerson, Fretz & Shaw, 2011), (b) videorecorded classroom observations (102 classes, 113 hours, recorded on 29 days), (c) a survey of all students, (d) semi-structured interviews with the subsample of 12 focal students (ranging from 18 to 37 minutes) and (e) photographs of classroom artifacts and student work. In the first article, I provide a window into standard literacy practices in science classrooms by examining the reading and writing genres to which students are exposed. In the second article, I examine how a teacher's language and instructional practices within her classrooms, and popular images of science from the world beyond their classrooms might shape adolescent girls' science identities. Finally, in the third article, I explore different aspects of science identity using the words of three case study students. Taken together, these studies fill gaps in the literature by investigating science literacy in an understudied context, all-female classrooms. In addition

  9. Bridging the Gender Gap: Self-Concept in the Middle Grades.

    Science.gov (United States)

    Backes, John S.

    1994-01-01

    Development of positive self-concept is critical at the middle level, a time when students are gaining basic skills and knowledge, establishing patterns of interacting with people and ideas, and setting personal life goals. A survey of students at a North Dakota middle school found that girls' self-concept was much lower than boys'.…

  10. Age-Graded Themes in White American Middle-Class Slang: A Hypothesis.

    Science.gov (United States)

    Donahue, Thomas S.

    It is proposed that middle- and upper-middle-class slang used among white young people in modern America shows age-related themes. For youngsters between the ages of eight and early adolescence, the major theme in slang use is to establish in-group and out-group membership, with standards of judgment based on clothes, manners, and physical appeal.…

  11. Company Men: Tracing Learning from Divergent Teacher Education Pathways into Practice in Middle Grades Classrooms

    Science.gov (United States)

    Conklin, Hilary G.

    2012-01-01

    In this comparative, longitudinal case study, the author investigates the two different pathways that have been most strongly advocated for certifying middle school social studies teachers: the specialized middle school and subject-specific secondary pathways. Drawing on classroom observations, interviews, documents, teacher and student work…

  12. Is there a correlation between students' perceptions of their middle school science classroom learning environment and their classroom grades?

    Science.gov (United States)

    Snyder, Wayne

    The purpose of this study was to determine if the marking period grades of middle school science students are correlated with their perception of the classroom learning environment, and if so could such an indicator be used in feedback loops for ongoing classroom learning environment evaluation and evolution. The study examined 24 classrooms in three districts representing several different types of districts and a diverse student population. The independent variable was the students' perceptions of their classroom learning environment (CLE). This variable was represented by their responses on the WIHIC (What Is Happening In This Class) questionnaire. The dependent variable was the students' marking period grades. Background data about the students was included, and for further elaboration and clarification, qualitative data was collected through student and teacher interviews. Middle school science students in this study perceived as most positive those domains over which they have more locus of control. Perceptions showed some variance by gender, ethnicity, teacher/district, and socio-economic status when viewing the absolute values of the domain variables. The patterns of the results show consistency between groups. Direct correlation between questionnaire responses and student grades was not found to be significant except for a small significance with "Task Orientation". This unexpected lack of correlation may be explained by inconsistencies between grading schemes, inadequacies of the indicator instrument, and/or by the one-time administration of the variables. Analysis of the qualitative and quantitative data led to the conclusion that this instrument is picking up information, but that revisions in both the variables and in the process are needed. Grading schemes need to be decomposed, the instrument needs to be revised, and the process needs to be implemented as a series of regular feed-back loops.

  13. Human sexuality education in the middle grades classroom: A review of curricula in a sample of Florida school districts

    Science.gov (United States)

    Myrick, Melinda D.

    2007-12-01

    This study examined the extent to which human sexuality topics are covered in Florida middle school science classrooms and the process by which curricular decisions are made regarding human sexuality education on a county-wide basis. Primary data included interviews with county-level administrators who oversee curricular decisions related to the middle-grades science curriculum or health curriculum in twelve school districts within the state. These districts represented four geographic locations and districts of various sizes. Administrators from four of the twelve studies in the sample chose to provide information regarding their human sexuality education curriculum. In two cases, teacher leads were identified and were interviewed to understand the implementation of the curriculum within the classroom. Additional data were collected from the district curriculum guides for human sexuality education and the adopted middle-grades science textbook for each county. The interview and documentary data were analyzed by comparison to established criteria for a comprehensive human sexuality education curriculum. The analysis revealed that the scope of human sexuality education varied considerably within the sample and that much of the curricula in place failed to include topics and activities that have been identified as important in a successful human sexuality education program. These findings are limited because few counties chose to fully participate. Additional research is clearly needed to examine the effectiveness of existing human sexuality education curricula in Florida. In addition, research is needed to understand the characteristics, values, and beliefs of successful human sexuality education instructors across the state.

  14. Massachusetts Early Warning Indicator System (EWIS). "Technical Descriptions of Risk Model Development": Middle and High School Age Groupings (Grades 7-12)

    Science.gov (United States)

    Massachusetts Department of Elementary and Secondary Education, 2013

    2013-01-01

    The Massachusetts Department of Elementary and Secondary Education (Department) created the grades 1-12 Early Warning Indicator System (EWIS) in response to district interest in the Early Warning Indicator Index (EWII) that the Department previously created for rising grade 9 students. Districts shared that the EWII data were helpful, but also…

  15. SIOP PODC Adapted treatment guidelines for low grade gliomas in low and middle income settings

    NARCIS (Netherlands)

    Hessissen, Laila; Parkes, Jeannette; Amayiri, Nisreen; Mushtaq, Naureen; Sirachainan, Nongnuch; Anacak, Yavuz; Mitra, Dipayan; Figaji, Anthony; Schouten-van Meeteren, Antoinette; Sullivan, Michael; Burger, Hester; Davidson, Alan; Bouffet, Eric; Bailey, Simon

    2017-01-01

    Effective treatment of children with low grade glioma (LGG) requires a functioning multi-disciplinary team with adequate neurosurgical, neuroradiological, pathological, radiotherapy and chemotherapy facilities and personnel. In addition, the treating centre should have the capacity to manage a

  16. The Rise of New Urban Middle Classes in Southeast Asia: What is its national and regional significance?

    OpenAIRE

    Takashi Shiraishi

    2004-01-01

    Middle classes in East Asia are a product of regional economic development which has taken place in waves under an American informal empire, over half a century, first in Japan, then in NIEs, then in Thailand, Malaysia, Indonesia and the Philippines and now in China. They are a product of developmental states and their politics of economic growth. Their life styles have been shaped in complex ways by their appropriation of things American, Japanese, Chinese, Islamic, and others. Though create...

  17. Synthesizing Middle Grades Research on Cultural Responsiveness: The Importance of a Shared Conceptual Framework

    Science.gov (United States)

    Kennedy, Brianna L.; Brinegar, Kathleen; Hurd, Ellis; Harrison, Lisa

    2016-01-01

    In conducting a literature review of 133 articles on cultural responsiveness in middle level education, we identified a lack of shared definitions, theoretical frameworks, methodological approaches, and foci, which made it difficult to synthesize across articles. Using a conceptual framework that required: a) clear definitions of terms; b) a…

  18. A Case Study Exploring the Reading Engagement of Middle Grades English Learners

    Science.gov (United States)

    Protacio, Maria Selena

    2017-01-01

    This study investigates the reading engagement of four middle school English learners in their English or English as a Second Language classroom. Students with high levels of reading engagement are those who (a) are motivated to read, (b) use strategies when reading, (c) use reading as a way to construct meaning from texts, and (d) participate in…

  19. The Oversexualization of Young Adolescent Girls: Implications for Middle Grades Educators

    Science.gov (United States)

    Curry, Jennifer R.; Choate, Laura H.

    2010-01-01

    This article was meant to familiarize readers with ways in which the media and popular culture sexualize and stereotype girls and women and to raise awareness about the extent to which girls in the middle graders may be impacted by the sexualized media content they view. By framing the problem and its consequences through self-objectification…

  20. Proportional Reasoning and Related Concepts: Analysis of Gaps and Understandings of Middle Grade Students

    Science.gov (United States)

    Ojose, Bobby

    2015-01-01

    This study investigated proportional reasoning and the related concepts of decimal, percent, and ratio. In particular, the research focused on analyzing the gaps and understandings that grades 6, 7, and 8 students have and advanced factors for such gaps and understandings. The study employed a mixed method approach in which quantitative data was…

  1. Peer Contexts: Do Old for Grade and Retained Peers Influence Student Behavior in Middle School?

    Science.gov (United States)

    Muschkin, Clara G.; Glennie, Elizabeth; Beck, Audrey N.

    2014-01-01

    Background: Many school systems have ended social promotion by implementing accountability systems where students who fail academic assessments are retained in grade. Additionally, some parents have delayed their children's entry into school, believing that older students have an advantage. While research has examined outcomes for students who…

  2. Rise in prostate-specific antigen in men with untreated low-grade prostate cancer is slower during spring-summer.

    Science.gov (United States)

    Vieth, R; Choo, R; Deboer, L; Danjoux, C; Morton, G C; Klotz, L

    2006-01-01

    To test the hypothesis that the rate of rise in prostate-specific antigen (PSA) is slower during the spring-summer than during the rest of the year, we used PSA data from a prospective single-arm cohort study of men who had been followed to characterize a watchful observation protocol with selective delayed intervention for clinically localized, low-to-intermediate grade prostate adenocarcinoma. The rate of PSA increase was calculated as the visit-to-visit slope of log (PSA) against time, from 1 calendar-quarter visit to the next. The nonparametric Friedman test confirmed differences in rate of PSA rise among the calendar quarters (P = 0.041). Post hoc analysis showed the rate of PSA increase during Q2 was significantly slower than in each one of the other calendar quarters (Q1 versus Q2, P = 0.025; Q3 versus Q2, P = 0.002; Q4 versus Q2, P = 0.013), with no differences among quarters Q1, Q3, and Q4. These results are consistent with the vitamin D hypothesis that the higher 25-hydroxyvitamin D levels associated with spring and summer have a desirable effect on prostate biology. The therapeutic implication is that vitamin D supplementation in the range of 2000 IU/d, a dose comparable to the effect of summer, can benefit men monitored for rising PSA.

  3. Middle Holocene coastal environment and the rise of the Liangzhu City complex on the Yangtze delta, China

    Science.gov (United States)

    Liu, Yan; Sun, Qianli; Thomas, Ian; Zhang, Li; Finlayson, Brian; Zhang, Weiguo; Chen, Jing; Chen, Zhongyuan

    2015-11-01

    The large prehistoric city of Liangzhu and its associated earthen dike emerged on the Yangtze delta-coast after two millennia of occupation in this area by scattered communities. Details of its development have been widely discussed in the literature. Our results reveal that the city was selectively built at the head of an embayment backed by hills, with close access to food, freshwater and timber, and with protection from coastal hazards. Radiocarbon and optically stimulated luminescence (OSL) dating shows that it was built around 4.8-4.5 ka, and the earthen dike was constructed a little later at 4.1 ka. During this time, saltwater wetlands were changing to freshwater in response to rapid coastal progradation as the postglacial sea-level rise stabilized. This facilitated rice farming and furthered the development of the city with elaborate city planning. The younger large-scale earthen dike and artificial ponds possibly suggest increasing demand for flood mitigation and irrigation.

  4. Problem-based learning versus traditional science instruction: Achievement and interest in science of middle grades minority females

    Science.gov (United States)

    Mungin, Rochelle E.

    This quantitative study examined science interest and achievement of middle school minority females in both traditional science classes and Problem-based Learning (PBL) science classes. The purpose of this study was to determine if there is a significant difference between traditional teaching and the PBL teaching method. The researcher also looked for a significant relationship between interest in science and achievement in science. This study used survey data from parents of female middle school science students to measure student interest in science concepts. The population of interest for this study was 13--15 year old eighth grade females from various racial make-ups such as, African American, Hispanic, Bi-racial, Asian, and Other Pacific Islander. Student achievement data was retrieved from the 8th grade science fall common assessed benchmark exam of both test groups. The results of the survey along with the benchmark data was to shed light on the way adolescent females learn and come to embrace science. The findings may provide guidance for science educators seeking to reach their minority female students and guide their achievement levels higher than before. From the results of the t-test and Pearson correlation test of this study, it can be concluded that while this study did not show a significant difference in academic achievement or interest between the two teaching styles, it revealed that interest in science has a positive role to play in the academic success of minority girls in science. The practical implications for examining these issues are to further the research on solutions for closing the minority and gender achievement gaps. The results of this study have implications for researchers as well as practitioners in the field of education.

  5. Common Core State Standards in the Middle Grades: What's New in the Geometry Domain and How Can Teachers Support Student Learning?

    Science.gov (United States)

    Teuscher, Dawn; Tran, Dung; Reys, Barbara J.

    2015-01-01

    The Common Core State Standards for Mathematics (CCSSM) is a primary focus of attention for many stakeholders' (e.g., teachers, district mathematics leaders, and curriculum developers) intent on improving mathematics education. This article reports on specific content shifts related to the geometry domain in the middle grades (6-8)…

  6. Analysis of Problems Posed by Sixth-Grade Middle School Students for the Addition of Fractions in Terms of Semantic Structures

    Science.gov (United States)

    Kar, Tugrul

    2015-01-01

    This study aimed to investigate how the semantic structures of problems posed by sixth-grade middle school students for the addition of fractions affect their problem-posing performance. The students were presented with symbolic operations involving the addition of fractions and asked to pose two different problems related to daily-life situations…

  7. A Different Kind of Kid, a Different Kind of Teacher Education: Middle Grades Teachers Reflect on Their Preparation to Teach Young Adolescents

    Science.gov (United States)

    Ochanji, Moses K.; Chen, Rong-Ji; Daniels, Erika; Deringer, Marlene L.; McDaniel, Janet; Stowell, Laurie; Cambra-Adamson, Christina

    2016-01-01

    Good teaching at the middle grades comes out of a deep understanding of the unique cognitive, physical, social, emotional, and moral needs of young adolescents. Specialized preparation therefore is necessary to help teacher candidates understand how to operationalize the intersection of young adolescent development and the effective pedagogy that…

  8. Low-Grade Albuminuria Is Associated with Metabolic Syndrome and Its Components in Middle-Aged and Elderly Chinese Population.

    Directory of Open Access Journals (Sweden)

    Jie Zhang

    Full Text Available Micro-albuminuria has been well established as one of the risk factors of metabolic syndrome (MetS. However, the association of MetS and its components with low-grade albuminuria among those with normal urinary albumin excretion has not been clearly elucidated in Chinese population.A cross-sectional study was conducted among 9,579 participants with normal urinary albumin excretion, who were recruited from Jia Ding District, Shanghai, China. The single-void first morning urine sample was collected for urinary albumin and creatinine measurements, and urinary albumin-to-creatinine ratio (UACR was calculated as urinary albumin divided by creatinine. Low-grade albuminuria was classified as sex-specific upper UACR quartile in this population. MetS was defined according to the National Cholesterol Education Program Adult Treatment Panel III criteria. The prevalence of MetS and its components increased across the UACR quartiles (all P trend <0.01. A multivariable adjusted logistic regression analysis revealed that the prevalence of MetS was gradually elevated according to the UACR quartiles (adjusted odds ratios [ORs] were 1.14, 1.24 and 1.59 for UACR quartiles 2, 3 and 4, compared with the lowest quartile; P trend<0.0001. In the further stratified logistic regression analyses, the associations between low-grade albuminuria and MetS were significant in both sex strata (male and female, both age strata (<60 and ≥60 years, both body mass index strata (<24 and ≥24 kg/m(2, and both diabetes strata (yes and no. Compared to the lowest UACR quartile, the participants in the highest quartile of UACR had the highest prevalence of central obesity (OR = 1.43; 95%CI = 1.25-1.63, high blood pressure (OR = 1.64; 95%CI = 1.43-1.87, hyperglycemia (OR = 1.52; 95%CI = 1.30-1.78 and high triglycerides (OR = 1.19; 95%CI = 1.04-1.37.Low-grade albuminuria was significantly associated with the increasing prevalence of MetS and its

  9. The effects of three concept mapping strategies on seventh-grade students' science achievement at an urban middle school

    Science.gov (United States)

    Dosanjh, Navdeep Kaur

    2011-12-01

    There is great concern over students' poor science achievement in the United States. Due to the lack of science achievement, students are not pursing science related careers resulting in an increase in outsourcing to other countries. Learning strategies such as concept mapping may ameliorate this situation by providing students with tools that encourage meaningful learning. The purpose of this quasi-experimental study was to measure the effects of three concept mapping learning strategies (concept identifying, proposition identifying, student generated) on urban middle school students' understanding of the circulatory system. Three intact classes of seventh-grade students were assigned to one of the three concept mapping strategies. The students were given a pretest on the circulatory system then learned and used their respective concept mapping strategies while learning about the circulatory system. At the conclusion of the study, students' science achievement was measured by performance on an achievement test and rubric scores of their respective concept identifying, proposition identifying, and student generated concept maps. The results of the study suggest that all three of the concept mapping strategies are effective in increasing students' science achievement. Additionally, the moderate significant correlations between the posttest and concept map scores of the current study established that concept maps are a useful measure of student knowledge. Lastly, the results of the current study also suggest that the concept identifying mapping strategy may be a useful scaffold in instructing students how to develop student generated concept maps.

  10. Attracting students and professionals into math, science, and technology education at the elementary and middle grades: Annual report, September 1, 1992--August 31, 1993

    Energy Technology Data Exchange (ETDEWEB)

    Flick, L.B.

    1995-12-31

    This report describes the progress of a project to encourage students and professionals to participate in math, science, and technology education at the elementary and middle grades. The topics of the report include developing a model laboratory/classroom for teacher education, providing financial incentives for students with technical majors to complete the program, and emphasizing issues of equity and minority participation in mathematics, science and technology education through recruitment procedures and in course content.

  11. Influence of staircase ventilation state on the airflow and heat transfer of the heated room on the middle floor of high rise building

    International Nuclear Information System (INIS)

    Shi, W.X.; Ji, J.; Sun, J.H.; Lo, S.M.; Li, L.J.; Yuan, X.Y.

    2014-01-01

    Highlights: • Experiments are conducted in a scaled building model. • The flow and heat transfer in the heated room are investigated. • The staircase ventilation state influence on the heated room. • The results are useful to understand the safety and energy efficiency of building. - Abstract: Safety and energy efficiency of high rise buildings have attracted public attention in recent decades. In this paper, a set of experiments was conducted in a scaled building model with 12 floors to study the influence of the staircase ventilation state on the flow and heat transfer of the heated room on the middle floor. The airflow, room temperature and fuel burning rate were investigated. It is found that when the window above the heated room is opened, the vents state below the heated room has a significant effect on the airflow and heat transfer in the heated room. When the vents below the heated room are closed, the single-directional air flows into the heated room owing to the stronger stack effect. And the flame tilt angle is larger and the upper hot smoke temperature in the heated room is low. However, when the windows above the heated room are closed, the vents state below the heated room has little influence on the airflow and heat transfer in the heated room. And, there is two-directional air flowing through the door of the heated room The burning rate of heat source is also affected by the staircase ventilation state, and the variation trend varies with the opened window position and pool size

  12. Early phonological skills as a predictor of reading acquisition: a follow-up study from kindergarten to the middle of grade 2.

    Science.gov (United States)

    Sprugevica, Ieva; Høien, Torleiv

    2003-04-01

    The purpose of this study was to investigate the power of early measures of phonological skills (phonemic awareness, rapid naming, short-term memory) in predicting later reading skills at various points of time. About 70 children were followed from the end of kindergarten to the middle of grade 2. Correlation analyses were performed as well as a linear growth curve analyses. In the traditional regression analysis, phonemic awareness in kindergarten explained about 27% of the variance in word reading six months later and about 9.5% of the variance at the end of grade 1. Even when prior level of reading skill was included in the predictive equation, a significant amount of variance was still explained by phonemic awareness. The other predictor variables did not explain any variance in word reading, and phonemic awareness did not predict any variance in reading skills in grade 2. When using sentence reading as the dependent variable, phonemic awareness explained about 16% of unique variance after six months, and about 13% of the variance in the middle of grade 2. Similarly, when employing growth curve analysis, phonemic awareness was the only phonological factor that accounted for significant variance in the word reading slope, explaining about 25% of its variance, whereas naming and short-term memory did not explain any unique variance. The lack of predictive power of phonemic awareness on the sentence b-slope is assumed to be caused by unreliable sentence scores in kindergarten.

  13. Effects of an intensive middle school science experience on the attitude toward science, self-esteem, career goal orientation, and science achievement of eighth-grade female students

    Science.gov (United States)

    Williams, Tammy Kay

    The purpose of this investigation was to examine the effects of a year long intensive extracurricular middle school science experience on the self-esteem, career goal orientation, and attitude toward science of eighth grade female students using both quantitative and qualitative methods. Sixteen self-selected eighth grade female students participated in extracurricular science experiences such as camping, rock climbing, specimen collecting and hiking, as well as meeting and interacting with female science role models. Data was collected using pre- and posttest methods using the Children's Attitude Toward Science Survey, the Coopersmith Self-Esteem Inventory, and the Self-Directed Search (SDS) Career Explorer. End of year science course grades were examined for seventh and eighth grades and compared to first semester high school grades. Qualitative data was in the form of: (1) focus group interviews conducted prior to field experiences, at the end of all field experiences, and at the end of the first semester of high school, and (2) journal entries from throughout the project. Qualitative data was examined for changes in student perceptions of science as a discipline, self as scientist, women in science, and social comparison of self in science.

  14. Middle Temporal Gyrus Versus Inferior Temporal Gyrus Transcortical Approaches to High-Grade Astrocytomas in the Mediobasal Temporal Lobe: A Comparison of Outcomes, Functional Restoration, and Surgical Considerations.

    Science.gov (United States)

    Quinones-Hinojosa, Alfredo; Raza, Shaan M; Ahmed, Ishrat; Rincon-Torroella, Jordina; Chaichana, Kaisorn; Olivi, Alessandro

    2017-01-01

    High-grade astrocytomas of the mesial temporal lobe may pose surgical challenges. Several approaches (trans-sylvian, subtemporal, and transcortical) have been designed to circumnavigate the critical neurovascular structures and white fiber tracts that surround this area. Considering the paucity of literature on the transcortical approach for these lesions, we describe our institutional experience with transcortical approaches to Grade III/IV astrocytomas in the mesial temporal lobe. Between 1999 and 2009, 23 patients underwent surgery at the Johns Hopkins Medical Institutions for Grade III/IV astrocytomas involving the mesial temporal lobe (without involvement of the temporal neocortex). Clinical notes, operative records, and imaging were reviewed. Thirteen patients had tumors in the dominant hemisphere. All patients underwent surgery via a transcortical approach (14 via the inferior temporal gyrus and 9 via the middle temporal gyrus). Gross total resection was obtained in 92 % of the cohort. Neurological outcomes were: clinically significant stroke (2 patients), new visual deficits (2 patients), new speech deficit (1 patient); seizure control (53 %). In comparison to reported results in the literature for the transylvian and subtemporal approaches, the transcortical approach may provide the access necessary for a gross total resection with minimal neurological consequences. In our series of patients, there was no statistically significant difference in outcomes between the middle temporal gyrus versus the inferior temporal gyrus trajectories.

  15. The Rise of Iran

    DEFF Research Database (Denmark)

    Rahigh-Aghsan, Ali

    Iran is viewed as a rising power that poses an increasing threat to regional and even global security. This view is wrong for three reasons. Iran's hard and soft power is exaggerated by most accounts; it is too limited to allow the Iranians to dominate the Persian Gulf let alone the Middle East...

  16. The Rise of Iran

    DEFF Research Database (Denmark)

    Rahigh-Aghsan, Ali; Jakobsen, Peter Viggo

    2010-01-01

    Iran is viewed as a rising power that poses an increasing threat to regional and even global security. This view is wrong for three reasons. Iran's hard and soft power is exaggerated by most accounts; it is too limited to allow the Iranians to dominate the Persian Gulf let alone the Middle East...

  17. The CMETS Program: Grounding Middle Grade Mathematics and Technology Professional Development in Research-Based Best Practice

    Science.gov (United States)

    Guerrero, Shannon; Dugdale, Sharon

    2009-01-01

    The past few decades have seen middle school teachers in the United States hit especially hard by contradictory messages about the use and importance of technology in support of their standards-based mathematics teaching. This paper considers this dichotomy with respect to the California Mathematics Education Technology Site (CMETS), a…

  18. Impact of a Technology-Infused Middle School Writing Program on Sixth-Grade Students' Writing Ability and Engagement

    Science.gov (United States)

    Goldenberg, Lauren; Meade, Terri; Midouhas, Emily; Cooperman, Naomi

    2011-01-01

    Process-oriented approaches are increasingly used in schools to improve writing. One of these approaches, known as the writing workshop model, is challenging for teachers to implement without supports. This quasi-experimental study evaluated the effectiveness of a middle school writing program that incorporates this model along with technological…

  19. Cheating Themselves out of an Education: Assignments That Promote Higher-Order Thinking and Honesty in the Middle Grades

    Science.gov (United States)

    Zito, Nicole; McQuillan, Patrick J.

    2010-01-01

    Given that students cheat so infrequently in elementary school and yet by high school cheat so routinely, the question arises, "What happens to students during the middle school years?" The conditions that lead to such drastic change in student behavior may be tied to a number of environmental factors evident as students advance to higher…

  20. Evaluating Online Resources in Terms of Learning Environment and Student Attitudes in Middle-Grade Mathematics Classes

    Science.gov (United States)

    Earle, James E.; Fraser, Barry J.

    2017-01-01

    The main objective of this research was to use learning environment and attitude scales in evaluating online resource materials for supporting a traditional mathematics curriculum. The sample consisted of 914 middle-school students in 49 classes. A second research focus was the validation of the chosen learning environment questionnaire, the…

  1. The Relationship between Readability Level of Mississippi's Middle Schools' Websites and Seventh Grade Language Arts MCT2 Scores

    Science.gov (United States)

    Pickard, Anna Marlene Graves

    2011-01-01

    Today's educators face the unprecedented challenge of increasing achievement for all students. One response has been to increase and improve parent involvement and school-to-home communication through the use of school websites. The quantitative section of this study analyzed the readability grade level of the website as it relates to state test…

  2. Trying on and trying out: participatory action research as a tool for literacy and identity work in middle grades classrooms.

    Science.gov (United States)

    Van Sluys, Katie

    2010-09-01

    This article explores the role of collaborative, ethnographic, participatory action research (PAR) with eighth grade students as a set of possible literacy practices for involving students with issues connected to their lives, resources, language(s), and communities. Findings are based on a year of fieldwork conducted as part of shared inquiry into one public school community's experiences with gentrification and meeting the complex needs of diverse learners. Findings bring to life the ways in which PAR facilitates the redefining of reading, writing, and research; the reconsideration of languages; the rethinking of literacy practices; and the repositioning of participants within and beyond given research endeavors.

  3. A phylogenetically distinct Middle East respiratory syndrome coronavirus detected in a dromedary calf from a closed dairy herd in Dubai with rising seroprevalence with age

    OpenAIRE

    Wernery, Ulrich; Rasoul, IHassab El; Wong, Emily YM; Joseph, Marina; Chen, Yixin; Jose, Shanty; Tsang, Alan KL; Patteril, Nissy Annie Georgy; Chen, Honglin; Elizabeth, Shyna K; Yuen, Kwok-Yung; Joseph, Sunitha; Xia, Ningshao; Wernery, Renate; Lau, Susanna KP

    2015-01-01

    Middle East respiratory syndrome coronavirus (MERS-CoV) was detected by monoclonal antibody-based nucleocapsid protein-capture enzyme-linked immunosorbent assay (ELISA), RNA detection, and viral culture from the nasal sample of a 1-month-old dromedary calf in Dubai with sudden death. Whole genome phylogeny showed that this MERS-CoV strain did not cluster with the other MERS-CoV strains from Dubai that we reported recently. Instead, it formed a unique branch more closely related to other MERS-...

  4. Aging and low-grade inflammation reduce renal function in middle-aged and older adults in Japan and the USA.

    Science.gov (United States)

    Costello-White, Reagan; Ryff, Carol D; Coe, Christopher L

    2015-08-01

    The objective of this study was to investigate the effects of low-grade inflammation on age-related changes in glomerular filtration rate (GFR) in middle-aged and older white Americans, African-Americans, and Japanese adults. Serum creatinine, C-reactive protein (CRP), and interleukin-6 (IL-6) levels were determined for 1570 adult participants in two surveys of aging in the USA and Japan (N = 1188 and 382, respectively). Kidney function declined with age in both countries and was associated with IL-6 and CRP. IL-6 and CRP also influenced the extent of the arithmetic bias when calculating the GFR using the chronic kidney disease epidemiology (CKD-EPI) formula with just serum creatinine. Younger African-Americans initially had the highest GFR but showed a steep age-related decrement that was associated with elevated inflammation. Japanese adults had the lowest average GFR but evinced a large effect of increased inflammatory activity when over 70 years of age. Importantly, our results also indicate that low-grade inflammation is important to consider when evaluating kidney function solely from serum creatinine.

  5. Effects of Absence and Cognitive Skills Index on Various Achievement Indicators. A Study of ISTEP Scores, Discrepancies, and School-Based Math and English Tests of 1997-1998 Seventh Grade Students at Sarah Scott Middle School, Terre Haute, Indiana.

    Science.gov (United States)

    Davis, Holly S.

    This study examines the correlation between absence, cognitive skills index (CSI), and various achievement indicators such as the Indiana Statewide Testing for Educational Progress (ISTEP) test scores, discrepancies, and school-based English and mathematics tests for 64 seventh-grade students from one middle school. Scores for each of the subtests…

  6. Study of the Effects on Student Knowledge and Perceptions of Activities Related to Submetering the 6th Grade Wing of a Middle School, to Displaying the Carbon Footprint, and to Efforts to Reduce Energy Consumption and Greenhouse Gases

    Science.gov (United States)

    Peck, Rick

    2009-01-01

    The purpose of the study was to determine the effects upon student knowledge and perceptions regarding greenhouse gas emissions as a result of an intervention relying upon the submetering the 6th grade wing of a Middle School, displaying the information regarding electrical consumption and carbon footprint, and reducing the electrical consumption…

  7. A Case Study on Specialised Content Knowledge Development with Dynamic Geometry Software: The Analysis of Influential Factors and Technology Beliefs of Three Pre-Service Middle Grades Mathematics Teachers

    Science.gov (United States)

    Zambak, Vecihi S.; Tyminski, Andrew M.

    2017-01-01

    This study characterises the development of Specialised Content Knowledge (SCK) with dynamic geometry software (DGS) throughout a semester. The research employed a single-case study with the embedded units of three pre-service middle grades mathematics teachers. Qualitative data were collected, and factors affecting these three teachers' SCK…

  8. 8800 years of high-altitude vegetation and climate history at the Rutor Glacier forefield, Italian Alps. Evidence of middle Holocene timberline rise and glacier contraction

    Science.gov (United States)

    Badino, Federica; Ravazzi, Cesare; Vallè, Francesca; Pini, Roberta; Aceti, Amelia; Brunetti, Michele; Champvillair, Elena; Maggi, Valter; Maspero, Francesco; Perego, Renata; Orombelli, Giuseppe

    2018-04-01

    Sedimentary archives at or near the timberline ecotone in Alpine glaciated areas contain records to study Holocene climate change and the interplay between climate, ecosystems, and humans. We focused on records of timberline and glacier oscillations in the Rutor Glacier forefield (Western Italian Alps) in the last 8800 years. Human activity in this area was negligible for most of the Holocene. We adopted an integrative stratigraphic approach including proxies for glacier advance and timberline estimation, sedimentary events, and reconstructed temperatures. Changes in timberline ecotone correlate to climate until the Middle Ages. Pollen-stratigraphic evidence of a primary plant succession highlights a lag beween local deglaciation and the first reliable 14C age. The radiocarbon chronology points to a prolonged phase of glacier contraction between 8.8 and 3.7 ka cal BP. Even later the glacier remained within its LIA limits. Between 8.4 and 4 ka cal BP MAT-inferred TJuly fluctuated near 12.4 °C, ca. 3.1 °C higher than today. During this period, a Pinus cembra forest belt grew at 2600 m asl with an upper limit of tree groves placed 434 ± 310 m above the current open forest limit. This Holocene phase of thermal maximum ended between 3.98 and 3.51 ± 70 ka cal BP and with a substantial rearrangement of forest composition; temperature reconstruction shows a decrease of 1.8 °C. This climate deterioration concluded the Subboreal thermal optimum, mirroring glacial advances widely documented in the Alps. The Rutor Glacier advanced at ca. AD 1093 ± 65, and remained inside the LIA maximum extent. The LIA started since AD 1594, and culminated between AD 1751 and 1864.

  9. A phylogenetically distinct Middle East respiratory syndrome coronavirus detected in a dromedary calf from a closed dairy herd in Dubai with rising seroprevalence with age.

    Science.gov (United States)

    Wernery, Ulrich; El Rasoul, I Hassab; Wong, Emily Y M; Joseph, Marina; Chen, Yixin; Jose, Shanty; Tsang, Alan K L; Patteril, Nissy Annie Georgy; Chen, Honglin; Elizabeth, Shyna K; Yuen, Kwok-Yung; Joseph, Sunitha; Xia, Ningshao; Wernery, Renate; Lau, Susanna K P; Woo, Patrick C Y

    2015-12-02

    Middle East respiratory syndrome coronavirus (MERS-CoV) was detected by monoclonal antibody-based nucleocapsid protein-capture enzyme-linked immunosorbent assay (ELISA), RNA detection, and viral culture from the nasal sample of a 1-month-old dromedary calf in Dubai with sudden death. Whole genome phylogeny showed that this MERS-CoV strain did not cluster with the other MERS-CoV strains from Dubai that we reported recently. Instead, it formed a unique branch more closely related to other MERS-CoV strains from patients in Qatar and Hafr-Al-Batin in Saudi Arabia, as well as the MERS-CoV strains from patients in the recent Korean outbreak, in which the index patient acquired the infection during travel in the eastern part of the Arabian Peninsula. Non-synonymous mutations, resulting in 11 unique amino acid differences, were observed between the MERS-CoV genome from the present study and all the other available MERS-CoV genomes. Among these 11 unique amino acid differences, four were found in ORF1ab, three were found in the S1 domain of the spike protein, and one each was found in the proteins encoded by ORF4b, ORF5, envelope gene, and ORF8. MERS-CoV detection for all other 254 dromedaries in this closed dairy herd was negative by nucleocapsid protein-capture ELISA and RNA detection. MERS-CoV IgG sero-positivity gradually increased in dromedary calves with increasing age, with positivity rates of 75% at zero to three months, 79% at four months, 89% at five to six months, and 90% at seven to twelve months. The development of a rapid antigen detection kit for instantaneous diagnosis is warranted.Emerging Microbes & Infections (2015) 4, e74; doi:10.1038/emi.2015.74; published online 2 December 2015.

  10. Rising equity

    International Nuclear Information System (INIS)

    Burr, M.T.

    1992-01-01

    This article reports on the results of a financial rankings survey of the independent energy industry indicating that lenders and investors provided more than five billion dollars in capital for new, private power projects during the first six months of 1992. The topics of the article include rising equity requirements, corporate finance, mergers and acquisitions, project finance investors, revenue bonds, project finance lenders for new projects, project finance lenders for restructurings, and project finance advisors

  11. The Rise of Iran

    DEFF Research Database (Denmark)

    Jakobsen, Peter Viggo; Rahigh-Aghsan, Ali

    2010-01-01

    Iran is viewed by many as a rising power that poses an increasing threat to regional and even global security. This view is wrong for three reasons. Iran's hard and soft power is exaggerated by most accounts; it is too limited to allow the Iranians to dominate the Persian Gulf let alone the Middle...... East, and its brand of Shi‘ism has very limited appeal outside of Iran. Second, growing internal political and economic instability will seriously limit Iran's bid for regional dominance. Third, the failure to stop the Iranian nuclear program has led analysts to underestimate the ability of the other...... regional powers and the West to balance Iran and contain its influence, even if it acquires nuclear weapons. If these limitations on Iranian power are taken into account the rise seems destined to be a short one....

  12. The Relationship between Multiplication Fact Speed-Recall and Fluency and Higher Level Mathematics Learning with Eighth Grade Middle School Students

    Science.gov (United States)

    Curry, Steven James

    2012-01-01

    This quantitative study investigated relationships between higher level mathematics learning and multiplication fact fluency, multiplication fact speed-recall, and reading grade equivalency of eighth grade students in Algebra I and Pre-Algebra. Higher level mathematics learning was indicated by an average score of 80% or higher on first and second…

  13. "Teaching Is a Lot More than Just Showing up to Class and Grading Assignments": Preparing Middle-Level Teachers for Longevity in the Profession

    Science.gov (United States)

    Van Overschelde, James P.; Saunders, Jane M.; Ash, Gwynne Ellen

    2017-01-01

    The university's teacher preparation program has implemented and continually refined a professional development school program, with extended university-school relationships in its middle-level certification program. This program offers dialogue, targeted learning activities, and intensive field-based experiences to help ease preservice teachers…

  14. Addressing diabetes at the crossroads of global pandemic and regional culture: Comment on "The curse of wealth - Middle Eastern countries need to address the rapidly rising burden of diabetes".

    Science.gov (United States)

    Hsu, William C; Gabbay, Robert A

    2014-07-01

    As diabetes and obesity rates continue to climb at astronomical rates in the Middle East, future generations are at an even greater risk for diabetes and the associated complications. Many factors are at play and it is clear that creative solutions are needed to retool provider resources in the Middle East towards prevention of diabetes and its complications while leveraging technology to maximize outreach within the accepted cultural norms. Only by building the capacity to address the current diabetes burden as well focusing on prevention for the future, can Middle East countries create a strong infrastructure for a successful future.

  15. An Examination of the Effect of Reading Interest and Selected Demographic Factors on Reading Performance among Students in the Middle Grades

    Science.gov (United States)

    Childs, Kamshia

    2013-01-01

    Much time is spent instilling in young students the importance of reading, and the impact reading has on their being considered "smart." The activities presented to students in primary (Pre-Kindergarten/Kindergarten) classrooms through third grade are engaging and cooperative, and they provide a sense of accomplishment for students who…

  16. Addressing diabetes at the crossroads of global pandemic and regional culture: Comment on "The curse of wealth – Middle Eastern countries need to address the rapidly rising burden of diabetes"

    OpenAIRE

    Hsu, William C.; Gabbay, Robert A.

    2014-01-01

    As diabetes and obesity rates continue to climb at astronomical rates in the Middle East, future generations are at an even greater risk for diabetes and the associated complications. Many factors are at play and it is clear that creative solutions are needed to retool provider resources in the Middle East towards prevention of diabetes and its complications while leveraging technology to maximize outreach within the accepted cultural norms. Only by building the capacity to address the curren...

  17. Association of Grade Configuration with School Climate for 7th and 8th Grade Students

    Science.gov (United States)

    Malone, Marisa; Cornell, Dewey; Shukla, Kathan

    2017-01-01

    Educational authorities have questioned whether middle schools provide the best school climate for 7th and 8th grade students, and proposed that other grade configurations such as K-8th grade schools may provide a better learning environment. The purpose of this study was to compare 7th and 8th grade students' perceptions of 4 key features of…

  18. 7 CFR 28.403 - Middling Color.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 2 2010-01-01 2010-01-01 false Middling Color. 28.403 Section 28.403 Agriculture..., TESTING, AND STANDARDS Standards Official Cotton Standards of the United States for the Color Grade of American Upland Cotton § 28.403 Middling Color. Middling Color is color which is within the range...

  19. A Shakespeare Festival for the Middle Grades.

    Science.gov (United States)

    Beaumier, Tony

    1993-01-01

    Describes how one teacher developed an approach to teaching the plays of William Shakespeare that included both attending performances of plays and then producing individual scenes through student participation. Outlines other related activities of the unit, including holding an Elizabethan marketplace. (HB)

  20. Active Learning in the Middle Grades

    Science.gov (United States)

    Edwards, Susan

    2015-01-01

    What is active learning and what does it look like in the classroom? If students are participating in active learning, they are playing a more engaged role in the learning process and are not overly reliant on the teacher (Bransford, Brown, & Cocking, 2003; Petress, 2008). The purpose of this article is to propose a framework to describe and…

  1. MRO's HiRISE Education and Public Outreach during the Primary Science Phase

    Science.gov (United States)

    Gulick, V. C.; Davatzes, A. K.; Deardorff, G.; Kanefsky, B.; Conrad, L. B.; HiRISE Team

    2008-12-01

    Looking back over one Mars year, we report on the accomplishments of the HiRISE EPO program during the primary science phase of MRO. A highlight has been our student image suggestion program, conducted in association with NASA Quest as HiRISE Image Challenges (http://quest.arc.nasa.gov/challenges/hirise/). During challenges, students, either individually or as part of a collaborative classroom or group, learn about Mars through our webcasts, web chats and our educational material. They use HiWeb, HiRISE's image suggestion facility, to submit image suggestions and include a short rationale for why their target is scientifically interesting. The HiRISE team gives priority to obtaining a sampling of these suggestions as quickly as possible so that the acquired images can be examined by the students. During the challenge, a special password-protected web site allows participants to view their returned images before they are released to the public (http://marsoweb.nas.nasa.gov/hirise/quest/). Students are encouraged to write captions for the returned images. Finished captions are then posted and highlighted on the HiRISE web site (http://hirise.lpl.arizona.edu) along with their class, teacher's name and the name of their school. Through these HiRISE challenges, students and teachers become virtual science team members, participating in the same process (selecting and justifying targets, analyzing and writing captions for acquired images), and using the same software tools as the HiRISE team. Such an experience is unique among planetary exploration EPO programs. To date, we have completed three HiRISE challenges and a fourth is currently ongoing. More than 200 image suggestions were submitted during the previous challenges and over 85 of these image requests have been acquired so far. Over 675 participants from 45 states and 42 countries have registered for the previous challenges. These participants represent over 8000 students in grades 2 through 14 and consist

  2. Contemporary sea level rise.

    Science.gov (United States)

    Cazenave, Anny; Llovel, William

    2010-01-01

    Measuring sea level change and understanding its causes has considerably improved in the recent years, essentially because new in situ and remote sensing observations have become available. Here we report on most recent results on contemporary sea level rise. We first present sea level observations from tide gauges over the twentieth century and from satellite altimetry since the early 1990s. We next discuss the most recent progress made in quantifying the processes causing sea level change on timescales ranging from years to decades, i.e., thermal expansion of the oceans, land ice mass loss, and land water-storage change. We show that for the 1993-2007 time span, the sum of climate-related contributions (2.85 +/- 0.35 mm year(-1)) is only slightly less than altimetry-based sea level rise (3.3 +/- 0.4 mm year(-1)): approximately 30% of the observed rate of rise is due to ocean thermal expansion and approximately 55% results from land ice melt. Recent acceleration in glacier melting and ice mass loss from the ice sheets increases the latter contribution up to 80% for the past five years. We also review the main causes of regional variability in sea level trends: The dominant contribution results from nonuniform changes in ocean thermal expansion.

  3. A middle Eocene carbon cycle conundrum

    NARCIS (Netherlands)

    Sluijs, A.; Zeebe, R.; Bijl, P.K.; Bohaty, S.M.

    2013-01-01

    The Middle Eocene Climatic Optimum (MECO) was an approximately 500,000-year-long episode of widespread ocean-atmosphere warming about 40 million years ago, superimposed on a long-term middle Eocene cooling trend. It was marked by a rise in atmospheric CO2 concentrations, biotic changes and prolonged

  4. HiRISE: The People's Camera

    Science.gov (United States)

    McEwen, A. S.; Eliason, E.; Gulick, V. C.; Spinoza, Y.; Beyer, R. A.; HiRISE Team

    2010-12-01

    than 100 public suggestions have been acquired. HiRISE has proven very popular with the public and science community. For example, a Google search on “HiRISE Mars” returns 626,000 results. We've participated in well over a two dozen presentations, specifically talking to middle and high-schoolers about HiRISE. Our images and captions have been featured in high-quality print magazines such as "National Geographic, Ciel et Espace, and Sky and Telescope.

  5. Rise of oil prices and energy policy

    International Nuclear Information System (INIS)

    2005-01-01

    This document reprints the talk of the press conference given by D. de Villepin, French prime minister, on August 16, 2005 about the alarming rise of oil prices. In his talk, the prime minister explains the reasons of the crisis (increase of worldwide consumption, political tensions in the Middle East..) and presents the strategy and main trends of the French energy policy: re-launching of energy investments in petroleum refining capacities and in the nuclear domain (new generation of power plants), development of renewable energy sources and in particular biofuels, re-launching of the energy saving policy thanks to financial incentives and to the development of clean vehicles and mass transportation systems. In a second part, the prime minister presents his policy of retro-cession of petroleum tax profits to low income workers, and of charge abatement to professionals having an occupation strongly penalized by the rise of oil prices (truckers, farmers, fishermen, taxi drivers). (J.S.)

  6. Opposites Detract: Middle School Peer Group Antipathies

    Science.gov (United States)

    Laursen, Brett; Bukowski, William M.; Nurmi, Jari-Eri; Marion, Donna; Salmela-Aro, Katariina; Kiuru, Noona

    2010-01-01

    This study examines variability in patterns of peer group antipathy. Same-grade adolescent peer groups were identified from sociometric nominations of preferred affiliates in a community sample of 600 Finnish ninth-grade middle school students (mean age = 15.0 years). Hierarchical linear modeling determined characteristics of youths in actor…

  7. Coal prices rise

    International Nuclear Information System (INIS)

    McLean, A.

    2001-01-01

    Coking and semi hard coking coal price agreements had been reached, but, strangely enough, the reaching of common ground on semi soft coking coal, ultra low volatile coal and thermal coal seemed some way off. More of this phenomenon later, but suffice to say that, traditionally, the semi soft and thermal coal prices have fallen into place as soon as the hard, or prime, coking coal prices have been determined. The rise and rise of the popularity of the ultra low volatile coals has seen demand for this type of coal grow almost exponentially. Perhaps one of the most interesting facets of the coking coal settlements announced to date is that the deals appear almost to have been preordained. The extraordinary thing is that the preordination has been at the prescience of the sellers. Traditionally, coking coal price fixing has been the prerogative of the Japanese Steel Mills (JSM) cartel (Nippon, NKK, Kawasaki, Kobe and Sumitomo) who presented a united front to a somewhat disorganised force of predominantly Australian and Canadian sellers. However, by the time JFY 2001 had come round, the rules of the game had changed

  8. The rise of Chrome

    Directory of Open Access Journals (Sweden)

    Jonathan Tamary

    2015-10-01

    Full Text Available Since Chrome’s initial release in 2008 it has grown in market share, and now controls roughly half of the desktop browsers market. In contrast with Internet Explorer, the previous dominant browser, this was not achieved by marketing practices such as bundling the browser with a pre-loaded operating system. This raises the question of how Chrome achieved this remarkable feat, while other browsers such as Firefox and Opera were left behind. We show that both the performance of Chrome and its conformance with relevant standards are typically better than those of the two main contending browsers, Internet Explorer and Firefox. In addition, based on a survey of the importance of 25 major features, Chrome product managers seem to have made somewhat better decisions in selecting where to put effort. Thus the rise of Chrome is consistent with technical superiority over the competition.

  9. Plume rise predictions

    International Nuclear Information System (INIS)

    Briggs, G.A.

    1976-01-01

    Anyone involved with diffusion calculations becomes well aware of the strong dependence of maximum ground concentrations on the effective stack height, h/sub e/. For most conditions chi/sub max/ is approximately proportional to h/sub e/ -2 , as has been recognized at least since 1936 (Bosanquet and Pearson). Making allowance for the gradual decrease in the ratio of vertical to lateral diffusion at increasing heights, the exponent is slightly larger, say chi/sub max/ approximately h/sub e/ - 2 . 3 . In inversion breakup fumigation, the exponent is somewhat smaller; very crudely, chi/sub max/ approximately h/sub e/ -1 . 5 . In any case, for an elevated emission the dependence of chi/sub max/ on h/sub e/ is substantial. It is postulated that a really clever ignorant theoretician can disguise his ignorance with dimensionless constants. For most sources the effective stack height is considerably larger than the actual source height, h/sub s/. For instance, for power plants with no downwash problems, h/sub e/ is more than twice h/sub s/ whenever the wind is less than 10 m/sec, which is most of the time. This is unfortunate for anyone who has to predict ground concentrations, for he is likely to have to calculate the plume rise, Δh. Especially when using h/sub e/ = h/sub s/ + Δh instead of h/sub s/ may reduce chi/sub max/ by a factor of anywhere from 4 to infinity. Factors to be considered in making plume rise predictions are discussed

  10. Rising South Korea : A Minor Player or a Regional Power?

    NARCIS (Netherlands)

    Shim, David; Flamm, Patrick

    2013-01-01

    South Korea's rising status in regional and global affairs has received significant attention in recent years. In academic, media, and policy debates, though, South Korea is usually regarded as a mere middle power that, due to its geopolitical situation, has only limited leeway in its foreign policy

  11. John Ash and the Rise of the Children's Grammar

    NARCIS (Netherlands)

    Navest, Karlijn Marianne

    2011-01-01

    From the second half of the eighteenth century onwards a knowledge of grammar served as an important marker of class in England. In order to enable their children to rise in society, middle-class parents expected their sons and daughters to learn English grammar. Since England did not have an

  12. 7 CFR 28.405 - Low Middling Color.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 2 2010-01-01 2010-01-01 false Low Middling Color. 28.405 Section 28.405 Agriculture..., TESTING, AND STANDARDS Standards Official Cotton Standards of the United States for the Color Grade of American Upland Cotton § 28.405 Low Middling Color. Low Middling Color is color which is within the range...

  13. 7 CFR 28.442 - Middling Yellow Stained Color.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 2 2010-01-01 2010-01-01 false Middling Yellow Stained Color. 28.442 Section 28.442... Stained Color. Middling Yellow Stained Color is American Upland cotton which in color is deeper than Middling Tinged Color. [57 FR 34498, Aug. 5, 1992] below color grade cotton ...

  14. 7 CFR 28.404 - Strict Low Middling Color.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 2 2010-01-01 2010-01-01 false Strict Low Middling Color. 28.404 Section 28.404... for the Color Grade of American Upland Cotton § 28.404 Strict Low Middling Color. Strict Low Middling Color is color which is within the range represented by a set of samples in the custody of the United...

  15. 7 CFR 28.402 - Strict Middling Color.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 2 2010-01-01 2010-01-01 false Strict Middling Color. 28.402 Section 28.402... for the Color Grade of American Upland Cotton § 28.402 Strict Middling Color. Strict Middling Color is color which is within the range represented by a set of samples in the custody of the United States...

  16. 7 CFR 28.401 - Good Middling Color.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 2 2010-01-01 2010-01-01 false Good Middling Color. 28.401 Section 28.401 Agriculture..., TESTING, AND STANDARDS Standards Official Cotton Standards of the United States for the Color Grade of American Upland Cotton § 28.401 Good Middling Color. Good Middling Color is color which is within the range...

  17. Balancing High Quality Subject-Matter Instruction with Positive Teacher-Student Relations in the Middle Grades: Effects of Departmentalization, Tracking and Block Scheduling on Learning Environments. Report No. 15.

    Science.gov (United States)

    McPartland, James M.

    This study tests the general hypothesis that there is no single best way to organize a middle school to meet the variety of needs of early adolescent students. Using data from a sample of 433 schools in the Pennsylvania Educational Quality Assessment, it examines the effects of self-contained classroom instruction and departmentalization on two…

  18. A process for developing and revising a learning progression on sea level rise using learners' explanations

    Science.gov (United States)

    McDonald, Robert Christopher

    The purpose of this study was to explore the process of developing a learning progression (LP) on constructing explanations about sea level rise. I used a learning progressions theoretical framework informed by the situated cognition learning theory. During this exploration, I explicitly described my decision-making process as I developed and revised a hypothetical learning progression. Correspondingly, my research question was: What is a process by which a hypothetical learning progression on sea level rise is developed into an empirical learning progression using learners' explanations? To answer this question, I used a qualitative descriptive single case study with multiple embedded cases (Yin, 2014) that employed analytic induction (Denzin, 1970) to analyze data collected on middle school learners (grades 6-8). Data sources included written artifacts, classroom observations, and semi-structured interviews. Additionally, I kept a researcher journal to track my thinking about the learning progression throughout the research study. Using analytic induction to analyze collected data, I developed eight analytic concepts: participant explanation structures varied widely, global warming and ice melt cause sea level rise, participants held alternative conceptions about sea level rise, participants learned about thermal expansion as a fundamental aspect of sea level rise, participants learned to incorporate authentic scientific data, participants' mental models of the ocean varied widely, sea ice melt contributes to sea level rise, and participants held vague and alternative conceptions about how pollution impacts the ocean. I started with a hypothetical learning progression, gathered empirical data via various sources (especially semi-structured interviews), revised the hypothetical learning progression in response to those data, and ended with an empirical learning progression comprising six levels of learner thinking. As a result of developing an empirically based LP

  19. Working memory and individual differences in mathematics achievement: A longitudinal study from first grade to second grade

    OpenAIRE

    De Smedt, Bert; Janssen, Rianne; Bouwens, Kelly; Verschaffel, Lieven; Boets, Bart; Ghesquière, Pol

    2009-01-01

    This longitudinal study examined the relationship between working memory and individual differences in mathematics. Working memory measures, comprising the phonological loop, the visuospatial sketchpad, and the central executive, were administered at the start of first grade. Mathematics achievement was assessed 4 months later (at the middle of first grade) and 1 year later (at the start of second grade). Working memory was significantly related to mathematics achievement in both grades, show...

  20. A Nascent Look at Theoretical Frameworks in Middle Level Education Research

    Science.gov (United States)

    Reyes, Cynthia; Netcoh, Steven

    2015-01-01

    This paper describes a qualitative content analysis of research articles published on middle level education in the last decade. This analysis was conducted on manuscripts appearing in two premier middle level education journals: "Middle Grades Research Journal" (MGRJ) and "Research in Middle Level Education Online" (RMLE) to…

  1. On Capillary Rise and Nucleation

    Science.gov (United States)

    Prasad, R.

    2008-01-01

    A comparison of capillary rise and nucleation is presented. It is shown that both phenomena result from a balance between two competing energy factors: a volume energy and a surface energy. Such a comparison may help to introduce nucleation with a topic familiar to the students, capillary rise. (Contains 1 table and 3 figures.)

  2. Cracks in functionally graded materials

    International Nuclear Information System (INIS)

    Bahr, H.-A.; Balke, H.; Fett, T.; Hofinger, I.; Kirchhoff, G.; Munz, D.; Neubrand, A.; Semenov, A.S.; Weiss, H.-J.; Yang, Y.Y.

    2003-01-01

    The weight function method is described to analyze the crack growth behavior in functionally graded materials and in particular materials with a rising crack growth resistance curve. Further, failure of graded thermal barrier coatings (TBCs) under cyclic surface heating by laser irradiation is modeled on the basis of fracture mechanics. The damage of both graded and non-graded TBCs is found to develop in several distinct stages: vertical cracking→delamination→blistering→spalling. This sequence can be understood as an effect of progressive shrinkage due to sintering and high-temperature creep during thermal cycling, which increases the energy-release rate for vertical cracks which subsequently turn into delamination cracks. The results of finite element modeling, taking into account the TBC damage mechanisms, are compatible with experimental data. An increase of interface fracture toughness due to grading and a decrease due to ageing have been measured in a four-point bending test modified by a stiffening layer. Correlation with the damage observed in cyclic heating is discussed. It is explained in which way grading is able to reduce the damage

  3. Plume rise from multiple sources

    International Nuclear Information System (INIS)

    Briggs, G.A.

    1975-01-01

    A simple enhancement factor for plume rise from multiple sources is proposed and tested against plume-rise observations. For bent-over buoyant plumes, this results in the recommendation that multiple-source rise be calculated as [(N + S)/(1 + S)]/sup 1/3/ times the single-source rise, Δh 1 , where N is the number of sources and S = 6 (total width of source configuration/N/sup 1/3/ Δh 1 )/sup 3/2/. For calm conditions a crude but simple method is suggested for predicting the height of plume merger and subsequent behavior which is based on the geometry and velocity variations of a single buoyant plume. Finally, it is suggested that large clusters of buoyant sources might occasionally give rise to concentrated vortices either within the source configuration or just downwind of it

  4. Is the Kingdom of Bicycles Rising Again?

    DEFF Research Database (Denmark)

    Rømer Christensen, Hilda

    2017-01-01

    This article focuses on new types of cycling in postsocialist China, especially mountain and sports biking, and on the particular entanglements of gender and class brought with them. The shift in mobility and biking from the Mao era to the postsocialist China is analyzed in the contexts of cultural......-analytical notions of global assemblages and gendered interpellations. Based on Chinese newspaper materials and fieldwork in Beijing and Shanghai, the article examines the social and gendered implications of the new biking cultures. These new biking practices mainly interpellate new middle-class men...... and masculinities as part of an exclusive leisure culture. If the “Kingdom of the Bicycles” is going to rise again, there is a need for a broader scope that addresses access for all, including women and families, as smart bikers, as well as biking as a daily mode of transportation....

  5. Rise of a cold plume

    International Nuclear Information System (INIS)

    Kakuta, Michio

    1977-06-01

    The rise of smoke from the stacks of two research reactors in normal operation was measured by photogrametric method. The temperature of effluent gas is less than 20 0 C higher than that of the ambient air (heat emission of the order 10 4 cal s -1 ), and the efflux velocity divided by the wind speed is between 0.5 and 2.8 in all 16 smoke runs. The field data obtained within downwind distance of 150m are compared with those by plume rise formulas presently available. Considering the shape of bending-over plume, the Briggs' formula for 'jet' gives a reasonable explanation of the observed plume rise. (auth.)

  6. An Investigation of Big Five Personality Traits and Career Decidedness among Early and Middle Adolescents

    Science.gov (United States)

    Lounsbury, John W.; Hutchens, Teresa; Loveland, James M.

    2005-01-01

    Big Five personality traits were analyzed in relation to career decidedness among adolescents in middle and high school. Participants were 248 7th-grade, 321 10th-grade, and 282 12th-grade students. As hypothesized, Conscientiousness was positively and significantly correlated with career decidedness in all three grades. Openness and Agreeableness…

  7. Teachers' Grading Decision Making

    Science.gov (United States)

    Isnawati, Ida; Saukah, Ali

    2017-01-01

    This study investigated teachers' grading decision making, focusing on their beliefs underlying their grading decision making, their grading practices and assessment types, and factors they considered in grading decision making. Two teachers from two junior high schools applying different curriculum policies in grade reporting in Indonesian…

  8. Ideas: NCTM Standards-Based Instruction, Grades K-4.

    Science.gov (United States)

    Hynes, Michael C., Ed.

    This document is a collection of activity-based mathematics lessons for grades K-4 from the "Ideas" department in "Arithmetic Teacher: Mathematics Education through the Middle Grades." Each lesson includes background information, objectives, directions, extensions, and student worksheets. A matrix is included which correlates…

  9. Ideas: NCTM Standards-Based Instruction, Grades 5-8.

    Science.gov (United States)

    Hynes, Michael C., Ed.

    This document is a collection of activity-based mathematics lessons for grades 5-8 from the "Ideas" department in "Arithmetic Teacher: Mathematics Education through the Middle Grades." Each lesson includes background information, objectives, directions, extensions, and student worksheets. A matrix is included which correlates…

  10. Early Predictors of Middle School Fraction Knowledge

    Science.gov (United States)

    Bailey, Drew H.; Siegler, Robert S.; Geary, David C.

    2014-01-01

    Recent findings that earlier fraction knowledge predicts later mathematics achievement raise the question of what predicts later fraction knowledge. Analyses of longitudinal data indicated that whole number magnitude knowledge in first grade predicted knowledge of fraction magnitudes in middle school, controlling for whole number arithmetic…

  11. A Special Report on Middle Schools.

    Science.gov (United States)

    Hollifield, John H.

    1988-01-01

    The first Center for Research on Elementary and Middle Schools (CREM) report describes the structures and practices currently used at all school levels for staffing, grouping, and scheduling. The report assesses the effects of departmentalization, tracking, ability grouping, and grade spans on student learning and development. (MLH)

  12. Middle School Girls' Envisioned Future in Computing

    Science.gov (United States)

    Friend, Michelle

    2015-01-01

    Experience is necessary but not sufficient to cause girls to envision a future career in computing. This study investigated the experiences and attitudes of girls who had taken three years of mandatory computer science classes in an all-girls setting in middle school, measured at the end of eighth grade. The one third of participants who were open…

  13. Geometric Transformations in Middle School Mathematics Textbooks

    Science.gov (United States)

    Zorin, Barbara

    2011-01-01

    This study analyzed treatment of geometric transformations in presently available middle grades (6, 7, 8) student mathematics textbooks. Fourteen textbooks from four widely used textbook series were evaluated: two mainline publisher series, Pearson (Prentice Hall) and Glencoe (Math Connects); one National Science Foundation (NSF) funded curriculum…

  14. What about Journalism in the Middle School?

    Science.gov (United States)

    Ayres-Salamon, Marilyn

    1997-01-01

    Shares results of a study showing that even in grade 8, "journalism kids do better." Surveys 225 parents about positive aspects of middle school journalism--results show that students improved in critical thinking, writing ability, ethical sense, leadership skills, and working with others. Finds negatives in the small number of students…

  15. Development of the Spatial Ability Test for Middle School Students

    Science.gov (United States)

    Yildiz, Sevda Göktepe; Özdemir, Ahmet Sükrü

    2017-01-01

    The purpose of this study was to develop a test to determine spatial ability of middle school students. The participants were 704 middle school students (6th, 7th and 8th grade) who were studying at different schools from Istanbul. Item analysis, exploratory and confirmatory factor analysis, reliability analysis were used to analyse the data.…

  16. Nanotechnology Awareness, Opinions and Risk Perceptions among Middle School Students

    Science.gov (United States)

    Sahin, Nurettin; Ekli, Emel

    2013-01-01

    The present study investigates awareness, factual knowledge, opinions, and risk perceptions of students from Turkish middle schools with regard to nanotechnology in a very general sense. The study was carried out among 1,396 middle school 6th, 7th, and 8th grade students. The students' perceptions of and opinions about nanotechnology were elicited…

  17. Middle School Students' Motivation for Learning Technology in South Korea

    Science.gov (United States)

    Kwon, Hyuksoo

    2016-01-01

    This study aims to develop a feasible instrument for determining middle school students' motivation to learn technology in South Korea. The authors translated Glynn's motivational instrument and modified it to measure Korean middle school students' motivation to learn technology. The instrument was applied to 441 students of grade 8 and 9 from six…

  18. Oscar F. Smith Middle School: One Extra Degree

    Science.gov (United States)

    Principal Leadership, 2012

    2012-01-01

    This article features Oscar F. Smith Middle School, a challenging school in Chesapeake, Virginia. When Principal Linda Scott exclaims, "Oscar F. Smith Middle School is "hot"!" to visitors, she is not referring to the inside temperature of the bustling school of grades 6-8 located in the historic South Norfolk borough of…

  19. Student Attitudes Toward Grades and Grading Practices.

    Science.gov (United States)

    Stallings, William M.; Leslie, Elwood K.

    The result of a study designed to assess student attitudes toward grading practices are discussed. Questionnaire responses of 3439 students in three institutions were tabulated. Responses were generally negative toward conventional grading systems. (MS)

  20. Classroom Norms and Individual Smoking Behavior in Middle School

    Science.gov (United States)

    Yarnell, Lisa M.; Brown, H. Shelton, III; Pasch, Keryn E.; Perry, Cheryl L.; Komro, Kelli A.

    2012-01-01

    Objectives: To investigate whether smoking prevalence in grade-level networks influences individual smoking, suggesting that peers are important social multipliers in teen smoking. Methods: We measured gender-specific, grade-level recent and life-time smoking among urban middle-school students who participated in Project Northland Chicago in a…

  1. The Rise of Blog Nation

    Science.gov (United States)

    Lum, Lydia

    2005-01-01

    This article reports on the growth of blogs in popular culture, and the fact that they are becoming more widely accepted in the media industry. The rise and popularity of blogs--short for "Web logs"--are causing journalism educators to overhaul their teachings. In fact, blogging's influence varies from one university program to the next, just like…

  2. Finding Rising and Falling Words

    NARCIS (Netherlands)

    Tjong Kim Sang, E.

    2016-01-01

    We examine two different methods for finding rising words (among which neologisms) and falling words (among which archaisms) in decades of magazine texts (millions of words) and in years of tweets (billions of words): one based on correlation coefficients of relative frequencies and time, and one

  3. The Trajectory of Popularity Goal during the Transition to Middle School

    Science.gov (United States)

    Dawes, Molly; Xie, Hongling

    2017-01-01

    The trajectory of early adolescents' popularity goal during the transition to middle school was examined in a diverse sample of 401 students. Popularity goal was assessed at five time points from the spring semester of fifth grade through the spring semester of seventh grade with the transition to middle school occurring between the fifth and…

  4. The Need for Large-Scale, Longitudinal Empirical Studies in Middle Level Education Research

    Science.gov (United States)

    Mertens, Steven B.; Caskey, Micki M.; Flowers, Nancy

    2016-01-01

    This essay describes and discusses the ongoing need for large-scale, longitudinal, empirical research studies focused on middle grades education. After a statement of the problem and concerns, the essay describes and critiques several prior middle grades efforts and research studies. Recommendations for future research efforts to inform policy…

  5. Prioritizing Elementary School Writing Instruction: Cultivating Middle School Readiness for Students with Learning Disabilities

    Science.gov (United States)

    Ciullo, Stephen; Mason, Linda

    2017-01-01

    Helping elementary students with learning disabilities (LD) prepare for the rigor of middle school writing is an instructional priority. Fortunately, several standards-based skills in upper elementary school and middle school overlap. Teachers in upper elementary grades, specifically fourth and fifth grades, have the opportunity to provide…

  6. Rise, stagnation, and rise of Danish women's life expectancy

    DEFF Research Database (Denmark)

    Lindahl-Jacobsen, Rune; Rau, Roland; Jeune, Bernard

    2016-01-01

    Health conditions change from year to year, with a general tendency in many countries for improvement. These conditions also change from one birth cohort to another: some generations suffer more adverse events in childhood, smoke more heavily, eat poorer diets, etc., than generations born earlier...... favor forecasts that hinge on cohort differences. We use a combination of age decomposition and exchange of survival probabilities between countries to study the remarkable recent history of female life expectancy in Denmark, a saga of rising, stagnating, and now again rising lifespans. The gap between...... female life expectancy in Denmark vs. Sweden grew to 3.5 y in the period 1975-2000. When we assumed that Danish women born 1915-1945 had the same survival probabilities as Swedish women, the gap remained small and roughly constant. Hence, the lower Danish life expectancy is caused by these cohorts...

  7. Findings from the First & Only National Data Base on Elemiddle & Middle Schools (Executive Summary)

    Science.gov (United States)

    Hough, David L.

    2009-01-01

    The study presented here is the first large scale effort on a national level to examine the relationship between K-8 Elemiddle Schools and 6-8 Middle Schools. From a population of more than 2,000 middle grades schools in 49 public school districts across 26 states, a sample of 542 Elemiddle and 506 Middle Schools was drawn. Both regression and…

  8. The Purdue Elementary Problem-Solving Inventory (PEPSI), Grade Level, and Socioeconomic Status: A Preliminary Study.

    Science.gov (United States)

    Cox, David W.

    1985-01-01

    The effects of grade level and socioeconomic status upon Purdue Elementary Problem-Solving Inventory (PEPSI) scores were investigated with 123 elementary students. It was concluded that the PEPSI is usable with most grade two through grade six pupils at both lower and middle socioeconomic levels, and has potential utility in teaching…

  9. Is sea-level rising?

    Digital Repository Service at National Institute of Oceanography (India)

    Unnikrishnan, A.S.

    correction in the estimation of trends obtained for tide gauge records. The altimeter data permits to prepare spatial maps of sea-level rise trends. We present a map prepared for the Indian Ocean (Figure 4) north of 10oS , which shows a fairly uniform... drawn information from research papers published by the author and report of the IPCC AR5 WG1 Chapter 13: Sea Level Changes, in which the author has served as a ‘Lead Author’. Figure1 is prepared using data from the University of Colorado. Nerem, R...

  10. Sea Level Rise Data Discovery

    Science.gov (United States)

    Quach, N.; Huang, T.; Boening, C.; Gill, K. M.

    2016-12-01

    Research related to sea level rise crosses multiple disciplines from sea ice to land hydrology. The NASA Sea Level Change Portal (SLCP) is a one-stop source for current sea level change information and data, including interactive tools for accessing and viewing regional data, a virtual dashboard of sea level indicators, and ongoing updates through a suite of editorial products that include content articles, graphics, videos, and animations. The architecture behind the SLCP makes it possible to integrate web content and data relevant to sea level change that are archived across various data centers as well as new data generated by sea level change principal investigators. The Extensible Data Gateway Environment (EDGE) is incorporated into the SLCP architecture to provide a unified platform for web content and science data discovery. EDGE is a data integration platform designed to facilitate high-performance geospatial data discovery and access with the ability to support multi-metadata standard specifications. EDGE has the capability to retrieve data from one or more sources and package the resulting sets into a single response to the requestor. With this unified endpoint, the Data Analysis Tool that is available on the SLCP can retrieve dataset and granule level metadata as well as perform geospatial search on the data. This talk focuses on the architecture that makes it possible to seamlessly integrate and enable discovery of disparate data relevant to sea level rise.

  11. On arbitrarily graded rings

    Indian Academy of Sciences (India)

    58

    paper is devoted to the study of arbitrary rings graded through arbitrary sets. .... which recover certain multiplicative relations among the homogeneous components ... instance the case in which the grading set A is an Abelian group, where the ...

  12. Graded manifolds and supermanifolds

    International Nuclear Information System (INIS)

    Batchelor, M.

    1984-01-01

    In this paper, a review is presented on graded manifolds and supermanifolds. Many theorems, propositions, corrollaries, etc. are given with proofs or sketch proofs. Graded manifolds, supereuclidian space, Lie supergroups, etc. are dealt with

  13. Supertall Asia/Middle East: Technological Responses and Contextual Impacts

    Directory of Open Access Journals (Sweden)

    Kyoung Sun Moon

    2015-07-01

    Full Text Available Supported by rapid economic growth, major cities in Asia and the Middle East have been rising as new centers for tall buildings. This article reviews the state of tall building developments in Asian and Middle Eastern countries with an emphasis on supertall buildings, with their greater urban and global impacts. Focusing primarily on physical construction, this article examines technological responses for building tall in Asian and Middle Eastern contexts. The architectural transformation and globalization of what was once called the “American Building Type” in Asian and Middle Eastern countries is studied. Sustainable design technology transfer and adjustment in Asian and Middle Eastern climates are presented. Further, future prospects on supertall design in Asian and Middle Eastern contexts are discussed.

  14. Plume rise measurements at Turbigo

    Energy Technology Data Exchange (ETDEWEB)

    Anfossi, D

    1982-01-01

    This paper presents analyses of plume measurements obtained during that campaign by the ENEL ground-based Lidar. The five stacks of Turbigo Power Plant have different heights and emission parameters and their plumes usually combine, so a model for multiple sources was used to predict the plume rises. These predictions are compared with the observations. Measurements of sigma/sub v/ and sigma/sub z/ over the first 1000 m are compared with the curves derived from other observations in the Po Valley, using the no-lift balloon technique over the same range of downwind distance. Skewness and kurtosis distributions are shown, both along the vertical and the horizontal directions. In order to show the plume structure in more detail, we present two examples of Lidar-derived cross sections and the corresponding vertically and horizontally integrated concentration profiles.

  15. Superphenix set to rise again

    International Nuclear Information System (INIS)

    Dorozynski, A.

    1993-01-01

    Superphenix, France's seemingly jinxed fast breeder reactor, which has not produced a single kilowatt of energy in more than 3 years, looks set to rise up next year like the mythical bird it is named after. The $5 billion reactor, the largest fast breeder in the world, has just been given the seal of approval by a public commission ordered by the government to look at the pros and cons of restarting. It still has hoops to jump through: a safety check and approval from the ministries of industries and environment. But the consortium of French, Italian, and German power utilities that run the plant are confident they can get it running by next summer. The Superphenix that rises out of the ashes will, however, be a different species of bird from the one planned 20 years ago. The consortium plans to turn the reactor into a debreeder, one that will incinerate more plutonium than it produces and so eat into Europe's plutonium stockpile. Calculations by Superphenix staff and the Atomic Energy Commission indicate that a plutonivorous fast breeder could incinerate 15 to 25 kilograms of plutonium while producing 1 billion kilowatt-hours of electricity-scarcely enough to make a dent in the tonnes of plutonium produced by Electricite de France's reactors each year. The Superphenix consortium is anxious to get the reactor back on line. The annual cost of upkeep and repair of the idle plant and salaries for its 700 staff may reach $140 million this year, 20% more than if the plant was running normally. If restarted, the existing core and a second one ready on the shelf will generate electricity worth $1.3 billion

  16. Middle Grade Tell-Alls: Wimpy Kid Read-Alikes

    Science.gov (United States)

    Giffard, Sue

    2011-01-01

    On the "New York Times" Children's Best Sellers list for more than two years, Jeff Kinney's "Diary of a Wimpy Kid" still causes groups of children to enthusiastically exclaim that it's the "best book ever." What is it that kids love about Greg Heffley and his escapades? Why are they overcome with laughter while simply trying to explain his humor?…

  17. The Importance of Equal Sign Understanding in the Middle Grades

    Science.gov (United States)

    Knuth, Eric J.; Alibali, Martha W.; Hattikudur, Shanta; McNeil, Nicole M.; Stephens, Ana C.

    2008-01-01

    The equal sign is perhaps the most prevalent symbol in school mathematics, and developing an understanding of it has typically been considered mathematically straightforward. In fact, after its initial introduction during students' early elementary school education, little, if any instructional time is explicitly spent on the concept in the later…

  18. Utilizing Multi-Modal Literacies in Middle Grades Science

    Science.gov (United States)

    Saurino, Dan; Ogletree, Tamra; Saurino, Penelope

    2010-01-01

    The nature of literacy is changing. Increased student use of computer-mediated, digital, and visual communication spans our understanding of adolescent multi-modal capabilities that reach beyond the traditional conventions of linear speech and written text in the science curriculum. Advancing technology opens doors to learning that involve…

  19. Business as Usual? Not for These Middle-Grades Students

    Science.gov (United States)

    Crawford, Heather; Wiest, Lynda

    2011-01-01

    A perpetual dilemma of schooling is how to help students develop skills needed for everyday life, including the work world. Quantitative literacy, also called numeracy, involves an ability to apply essential mathematics skills to authentic or near-authentic tasks. Carefully planned classroom activities can help students develop these important…

  20. College and Career Readiness in the Middle Grades

    Science.gov (United States)

    Schaefer, Mary Beth; Rivera, Lourdes M.

    2012-01-01

    The development and implementation of a comprehensive and systemic career development program, The Career Institute, provided the mechanism through which one school community addressed students' career development and college readiness needs while also attending to their academic and personal-social development. The Career Institute consisted of a…

  1. Selected Energy Education Activities for Pennsylvania Middle School Grades. Draft.

    Science.gov (United States)

    Hack, Nancy; And Others

    These activities are intended to help increase awareness and understanding of the energy situation and to encourage students to become energy conservationists. The document is divided into sections according to discipline area. A final section is devoted to interdisciplinary activities involving several discipline areas integrated with the energy…

  2. Relationships between Prospective Middle Grades Mathematics Teachers' Beliefs and TPACK

    Science.gov (United States)

    Smith, Ryan C.; Kim, Somin; McIntyre, Leighton

    2016-01-01

    As technology become more ubiquitous in the classroom, teachers need to overcome two types of barriers to use it effectively: access to resources (including the development of knowledge) and the development of appropriate beliefs. To assist teachers in overcoming these barriers, we must understand the relationships that exist among them. We…

  3. Future rise of the sea level: consequences and strategies on the shoreline

    International Nuclear Information System (INIS)

    Teisson, C.

    1991-11-01

    The Mean Sea Level may rise in a near future due to the warming of the atmosphere associated with the 'greenhouse effect'. The alarming estimations issued in the 1980's (several meters of surelevation in the next centuries) are now lowered: the ice sheets, the melting of which could induce such a rise, do not present signs of instability. A rise from 30 to 50 cm is likely to occur in the middle of the next century; there is a probability of 25% that the rise of sea level relative to the year 1980 stands beyond 1 meter by 2100. The consequences of such a rise on the shoreline and the maritime works are reviewed, and planning strategies are discussed. This study has been performed in the framework of a convention between EDF-LNH and the Sea State Secretary (Service Technique des Ports Maritimes et Voies Navigables) 41 refs., 31 figs., 6 tabs

  4. GRADE Equity Guidelines 3

    DEFF Research Database (Denmark)

    Welch, Vivian A; Akl, Elie A; Pottie, Kevin

    2017-01-01

    OBJECTIVE: The aim of this paper is to describe a conceptual framework for how to consider health equity in the GRADE (Grading Recommendations Assessment and Development Evidence) guideline development process. STUDY DESIGN AND SETTING: Consensus-based guidance developed by the GRADE working grou...

  5. Early Predictors of Middle School Fraction Knowledge

    OpenAIRE

    Bailey, Drew H.; Siegler, Robert S.; Geary, David C.

    2014-01-01

    Recent findings that earlier fraction knowledge predicts later mathematics achievement raise the question of what predicts later fraction knowledge. Analyses of longitudinal data indicated that whole number magnitude knowledge in first grade predicted knowledge of fraction magnitudes in middle school, controlling for whole number arithmetic proficiency, domain general cognitive abilities, parental income and education, race, and gender. Similarly, knowledge of whole number arithmetic in first...

  6. Arts Voices: Middle School Students and the Relationships of the Arts to Their Motivation and Self-Efficacy

    Science.gov (United States)

    Moorefield-Lang, Heather M.

    2010-01-01

    This study explores the question "Does arts education have a relationship to eighth-grade rural middle school students' motivation and self-efficacy?" Student questionnaires, focus-group interviews, and follow-up interviews were data collection methods used with 92 eighth-grade middle school students. Strong emphasis was placed on gathering…

  7. Observed rise of visible plumes from hyperbolic natural draft cooling towers

    Energy Technology Data Exchange (ETDEWEB)

    Brennan, P T [Smith-Singer Meteorologists, Inc., Amityville, NY; Seymour, D E; Butler, M J; Kramer, M L; Smith, M E; Frankenberg, T T

    1976-01-01

    The behavior of natural draft cooling tower plumes and related meteorological variables have been measured from aircraft near three major plants of the American Electric Power System. The rise of those plumes which persisted long enough to reach a stabilized height depended primarily upon the height of the capping inversion aloft. All such plumes rose to elevations of 425 m or more above grade. No significant relationships between plume rise and wind speed, plant load, or ambient temperature were found. We conclude that simple temperature humidity soundings in the vicinity of the towers would serve as effective predictors of plume rise and persistence.

  8. Large Volcanic Rises on Venus

    Science.gov (United States)

    Smrekar, Suzanne E.; Kiefer, Walter S.; Stofan, Ellen R.

    1997-01-01

    Large volcanic rises on Venus have been interpreted as hotspots, or the surface manifestation of mantle upwelling, on the basis of their broad topographic rises, abundant volcanism, and large positive gravity anomalies. Hotspots offer an important opportunity to study the behavior of the lithosphere in response to mantle forces. In addition to the four previously known hotspots, Atla, Bell, Beta, and western Eistla Regiones, five new probable hotspots, Dione, central Eistla, eastern Eistla, Imdr, and Themis, have been identified in the Magellan radar, gravity and topography data. These nine regions exhibit a wider range of volcano-tectonic characteristics than previously recognized for venusian hotspots, and have been classified as rift-dominated (Atla, Beta), coronae-dominated (central and eastern Eistla, Themis), or volcano-dominated (Bell, Dione, western Eistla, Imdr). The apparent depths of compensation for these regions ranges from 65 to 260 km. New estimates of the elastic thickness, using the 90 deg and order spherical harmonic field, are 15-40 km at Bell Regio, and 25 km at western Eistla Regio. Phillips et al. find a value of 30 km at Atla Regio. Numerous models of lithospheric and mantle behavior have been proposed to interpret the gravity and topography signature of the hotspots, with most studies focusing on Atla or Beta Regiones. Convective models with Earth-like parameters result in estimates of the thickness of the thermal lithosphere of approximately 100 km. Models of stagnant lid convection or thermal thinning infer the thickness of the thermal lithosphere to be 300 km or more. Without additional constraints, any of the model fits are equally valid. The thinner thermal lithosphere estimates are most consistent with the volcanic and tectonic characteristics of the hotspots. Estimates of the thermal gradient based on estimates of the elastic thickness also support a relatively thin lithosphere (Phillips et al.). The advantage of larger estimates of

  9. Graded gauge theory

    International Nuclear Information System (INIS)

    Kerner, R.

    1983-01-01

    The mathematical background for a graded extension of gauge theories is investigated. After discussing the general properties of graded Lie algebras and what may serve as a model for a graded Lie group, the graded fiber bundle is constructed. Its basis manifold is supposed to be the so-called superspace, i.e. the product of the Minkowskian space-time with the Grassmann algebra spanned by the anticommuting Lorentz spinors; the vertical subspaces tangent to the fibers are isomorphic with the graded extension of the SU(N) Lie algebra. The connection and curvature are defined then on this bundle; the two different gradings are either independent of each other, or may be unified in one common grading, which is equivalent to the choice of the spin-statistics dependence. The Yang-Mills lagrangian is investigated in the simplified case. The conformal symmetry breaking is discussed, as well as some other physical consequences of the model. (orig.)

  10. Rising prices squeeze gas marketer

    Energy Technology Data Exchange (ETDEWEB)

    Lunan, D.

    2000-06-19

    Apollo Gas, a Toronto-based gas marketer, is considering options to enhance unit holder value, including sale of its 21,000 gas supply contracts, just weeks after it was forced out of the Alberta market by rising gas prices. Although the company had reported first quarter revenues of more than $15 million and earnings through that period of about $2.1 million, increases of 33 per cent and 38 per cent respectively over the same period in 1999, the company is resigned to the fact that such performance markers are not likely to be reached again in the foreseeable future, hence the decision to sell. About 95 per cent of Apollo's current transportation service volumes are matched to existing fixed-price supply contract which are due to expire in November 2000. After that, it is about 75 per cent matched for the balance of the term of its customer contracts (mostly five years). This means that the company is exposed to market prices that are likely to continue to increase. If this prediction holds true, Apollo would be forced to purchase the unhedged volumes of gas it needs to service its customers in the spot market at prices higher than prices the company is charging to its customers.

  11. Rising prices squeeze gas marketer

    International Nuclear Information System (INIS)

    Lunan, D.

    2000-01-01

    Apollo Gas, a Toronto-based gas marketer, is considering options to enhance unit holder value, including sale of its 21,000 gas supply contracts, just weeks after it was forced out of the Alberta market by rising gas prices. Although the company had reported first quarter revenues of more than $15 million and earnings through that period of about $2.1 million, increases of 33 per cent and 38 per cent respectively over the same period in 1999, the company is resigned to the fact that such performance markers are not likely to be reached again in the foreseeable future, hence the decision to sell. About 95 per cent of Apollo's current transportation service volumes are matched to existing fixed-price supply contract which are due to expire in November 2000. After that, it is about 75 per cent matched for the balance of the term of its customer contracts (mostly five years). This means that the company is exposed to market prices that are likely to continue to increase. If this prediction holds true, Apollo would be forced to purchase the unhedged volumes of gas it needs to service its customers in the spot market at prices higher than prices the company is charging to its customers

  12. The rise of colliding beams

    International Nuclear Information System (INIS)

    Richter, B.

    1992-06-01

    It is a particular pleasure for me to have this opportunity to review for you the rise of colliding beams as the standard technology for high-energy-physics accelerators. My own career in science has been intimately tied up in the transition from the old fixed-target technique to colliding-beam work. I have led a kind of double life both as a machine builder and as an experimenter, taking part in building and using the first of the colliding-beam machines, the Princeton-Stanford Electron-Electron Collider, and building the most recent advance in the technology, the Stanford Linear Collider. The beginning was in 1958, and in the 34 years since there has been a succession of both electron and proton colliders that have increased the available center-of-mass energy for hard collisions by more than a factor of 1000. For the historians here, I regret to say that very little of this story can be found in the conventional literature. Standard operating procedure for the accelerator physics community has been publication in conference proceedings, which can be obtained with some difficulty, but even more of the critical papers are in internal laboratory reports that were circulated informally and that may not even have been preserved. In this presentation I shall review what happened based on my personal experiences and what literature is available. I can speak from considerable experience on the electron colliders, for that is the topic in which I was most intimately involved. On proton colliders my perspective is more than of an observer than of a participant, but I have dug into the literature and have been close to many of the participants

  13. Factors Affecting Aggression in South Korean Middle School Students

    Directory of Open Access Journals (Sweden)

    MiJeong Park, PhD, RN

    2014-12-01

    Conclusion: Findings indicate that depression, academic stress, and grade (second grade influence aggression. To decrease aggressive behavior, it is necessary to provide systematic and political programs in schools and local communities that can ameliorate negative emotional factors like depression and academic stress. Additionally, development of positive factors such as self esteem, decision-making skills, and happiness in middle school students is important to reduce aggression.

  14. Graded tensor calculus

    International Nuclear Information System (INIS)

    Scheunert, M.

    1982-10-01

    We develop a graded tensor calculus corresponding to arbitrary Abelian groups of degrees and arbitrary commutation factors. The standard basic constructions and definitions like tensor products, spaces of multilinear mappings, contractions, symmetrization, symmetric algebra, as well as the transpose, adjoint, and trace of a linear mapping, are generalized to the graded case and a multitude of canonical isomorphisms is presented. Moreover, the graded versions of the classical Lie algebras are introduced and some of their basic properties are described. (orig.)

  15. Classroom: Efficient Grading

    Science.gov (United States)

    Shaw, David D.; Pease, Leonard F., III.

    2014-01-01

    Grading can be accelerated to make time for more effective instruction. This article presents specific time management strategies selected to decrease administrative time required of faculty and teaching assistants, including a multiple answer multiple choice interface for exams, a three-tier grading system for open ended problem solving, and a…

  16. Grain Grading and Handling.

    Science.gov (United States)

    Rendleman, Matt; Legacy, James

    This publication provides an introduction to grain grading and handling for adult students in vocational and technical education programs. Organized in five chapters, the booklet provides a brief overview of the jobs performed at a grain elevator and of the techniques used to grade grain. The first chapter introduces the grain industry and…

  17. Cognitive functions in middle aged individuals are related to metabolic disturbances and aerobic capacity

    DEFF Research Database (Denmark)

    Pedersen, Maria; Pedersen, Karin Kaereby; Bruunsgaard, Helle

    2012-01-01

    Metabolic disturbances may contribute to cognitive dysfunction in patients with type 2 diabetes. We investigated the relation between cognitive impairment and metabolic deteriorations, low physical fitness, low-grade inflammation and abdominal obesity in middle aged individuals.......Metabolic disturbances may contribute to cognitive dysfunction in patients with type 2 diabetes. We investigated the relation between cognitive impairment and metabolic deteriorations, low physical fitness, low-grade inflammation and abdominal obesity in middle aged individuals....

  18. Podcasting in an Eighth-Grade American History Class

    Science.gov (United States)

    Davis, Patrick D.

    2011-01-01

    The purpose of this study was to see how students used podcasts in an eighth-grade American history unit and the value they placed on them as an educational tool. The 6-week study was conducted in a suburban middle school in a district that is part of a large metropolitan area in Texas. Participants included 29 students and 2 eighth-grade…

  19. Home Economics/Health Grades 6-12. Program Evaluation.

    Science.gov (United States)

    Des Moines Public Schools, IA. Teaching and Learning Div.

    Home economics programs are offered to students in grades 6-12 in the Des Moines INdependent Community School District (Iowa). Programs at the middle school level are exploratory, leading to occupational training in family and consumer science, child care, food service, and textile and fashion arts at the high school level. Health education…

  20. Cultures of the Western World. Grade Ten. Instructional Guide.

    Science.gov (United States)

    West Chester School District, PA.

    This curriculum guide presents nine units for the study of western cultures in the tenth grade. The units contain up to 13 lessons each and comprise a two-semester course. Content includes ancient Greece and Rome, the Middle Ages, the Renaissance and Reformation, Great Britain, France as a case study of revolution, Russia, and nationalism and the…

  1. The Relationship among Grade Configuration, School Attachment, and Achievement

    Science.gov (United States)

    Carolan, Brian V.; Chesky, Nataly Z.

    2012-01-01

    Many school districts have turned attention to school grade configuration as a way to ease student transitions and improve academic performance, however the research base supporting such reforms is limited. Little attention has been given to how and to what degree school attachment influences the relationship between schools' middle level grade…

  2. Vascular grading of angiogenesis

    DEFF Research Database (Denmark)

    Hansen, S; Grabau, D A; Sørensen, Flemming Brandt

    2000-01-01

    The study aimed to evaluate the prognostic value of angiogenesis by vascular grading of primary breast tumours, and to evaluate the prognostic impact of adding the vascular grade to the Nottingham Prognostic Index (NPI). The investigation included 836 patients. The median follow-up time was 11...... years and 4 months. The microvessels were immunohistochemically stained by antibodies against CD34. Angiogenesis was graded semiquantitatively by subjective scoring into three groups according to the expected number of microvessels in the most vascular tumour area. The vascular grading between observers...... for 24% of the patients, who had a shift in prognostic group, as compared to NPI, and implied a better prognostic dissemination. We concluded that the angiogenesis determined by vascular grading has independent prognostic value of clinical relevance for patients with breast cancer....

  3. Vascular grading of angiogenesis

    DEFF Research Database (Denmark)

    Hansen, S; Grabau, D A; Sørensen, Flemming Brandt

    2000-01-01

    The study aimed to evaluate the prognostic value of angiogenesis by vascular grading of primary breast tumours, and to evaluate the prognostic impact of adding the vascular grade to the Nottingham Prognostic Index (NPI). The investigation included 836 patients. The median follow-up time was 11...... years and 4 months. The microvessels were immunohistochemically stained by antibodies against CD34. Angiogenesis was graded semiquantitatively by subjective scoring into three groups according to the expected number of microvessels in the most vascular tumour area. The vascular grading between observers...... impact for 24% of the patients, who had a shift in prognostic group, as compared to NPI, and implied a better prognostic dissemination. We concluded that the angiogenesis determined by vascular grading has independent prognostic value of clinical relevance for patients with breast cancer....

  4. Paleochannel and paleohydrology of a Middle Siwalik (Pliocene ...

    Indian Academy of Sciences (India)

    Late Cenozoic fresh water molasses sediments (+6000 m thick) deposited all along the length of the. Himalayan fore deep, form the Siwalik Supergroup. This paper reports the results of the paleodrainage and paleohydrology of the Middle Siwalik subgroup of rocks, deposited in non-marine basins adjacent to a rising ...

  5. Middle East Respiratory Syndrome

    Centers for Disease Control (CDC) Podcasts

    2014-07-07

    This podcast discusses Middle East Respiratory Syndrome, or MERS, a viral respiratory illness caused by Middle East Respiratory Syndrome Coronavirus—MERS-CoV.  Created: 7/7/2014 by National Center for Immunization and Respiratory Diseases (NCIRD).   Date Released: 7/7/2014.

  6. Middle East - future perspectives

    International Nuclear Information System (INIS)

    Lior, Y.

    1997-01-01

    Facts concerning the basic features of Tlatelolco Treaty are discussed in comparison with the Middle East situation which is described as a special case. Countries in the Middle East should attain political, social and ideological maturity necessary for the adoption of negotiating strategies suitable for this particular region

  7. Middle Eastern rhinoplasty.

    Science.gov (United States)

    Azizzadeh, Babak; Mashkevich, Grigoriy

    2010-02-01

    The ethnic appearance of the Middle Eastern nose is defined by several unique visual features, particularly a high radix, wide overprojecting dorsum, and an amorphous hanging nasal tip. These external characteristics reflect distinct structural properties of the osseo-cartilaginous nasal framework and skin-soft tissue envelope in patients of Middle Eastern extraction. The goal, and the ultimate challenge, of rhinoplasty on Middle Eastern patients is to achieve balanced aesthetic refinement, while avoiding surgical westernization. Detailed understanding of the ethnic visual harmony in a Middle Eastern nose greatly assists in preserving native nasal-facial relationships during rhinoplasty on Middle Eastern patients. Esthetic alteration of a Middle Eastern nose follows a different set of goals and principles compared with rhinoplasties on white or other ethnic patients. This article highlights the inherent nasal features of the Middle Eastern nose and reviews pertinent concepts of rhinoplasty on Middle Eastern patients. Essential considerations in the process spanning the consultation and surgery are reviewed. Reliable operative techniques that achieve a successful aesthetic outcome are discussed in detail. Copyright 2010 Elsevier Inc. All rights reserved.

  8. Science Textbooks' Use of Graphical Representation: A Descriptive Analysis of Four Sixth Grade Science Texts

    Science.gov (United States)

    Slough, Scott W.; McTigue, Erin M.; Kim, Suyeon; Jennings, Susan K.

    2010-01-01

    Middle school teachers tend to rely heavily on texts that have become increasing more visual. There is little information available about the graphical demands of general middle grades' science texts. The purpose of this study was to quantify the type and quality of the graphical representations and how they interacted with the textual material in…

  9. Regional approaches in high-rise construction

    Science.gov (United States)

    Iconopisceva, O. G.; Proskurin, G. A.

    2018-03-01

    The evolutionary process of high-rise construction is in the article focus. The aim of the study was to create a retrospective matrix reflecting the tasks of the study such as: structuring the most iconic high-rise objects within historic boundaries. The study is based on contemporary experience of high-rise construction in different countries. The main directions and regional specifics in the field of high-rise construction as well as factors influencing the further evolution process are analyzed. The main changes in architectural stylistics, form-building, constructive solutions that focus on the principles of energy efficiency and bio positivity of "sustainable buildings", as well as the search for a new typology are noted. The most universal constructive methods and solutions that turned out to be particularly popular are generalized. The new typology of high-rises and individual approach to urban context are noted. The results of the study as a graphical scheme made it possible to represent the whole high-rise evolution. The new spatial forms of high-rises lead them to new role within the urban environments. Futuristic hyperscalable concepts take the autonomous urban space functions itself and demonstrate us how high-rises can replace multifunctional urban fabric, developing it inside their shells.

  10. School Climate in Middle Schools: A Cultural Perspective

    Science.gov (United States)

    Schneider, Stephanie H.; Duran, Lauren

    2010-01-01

    In 2007-08 and 2008-09, 2,500 randomly-selected middle school students completed an annual survey on school climate and character development. In examining differences based upon grade, gender, race/ethnicity, school, and length of program participation, significant differences were found for all but length of program participation. Responses of…

  11. Friendships in Middle School: Influences on Motivation and School Adjustment

    Science.gov (United States)

    Wentzel, Kathryn R.; Barry, Carolyn McNamara; Caldwell, Kathryn A.

    2004-01-01

    In this 2-year longitudinal study (n=242), the authors examined relations of having a reciprocated friend and characteristics of a reciprocated friend to students' social and academic adjustment to middle school. With respect to having a friend, 6th-grade students without friends showed lower levels of prosocial behavior, academic achievement, and…

  12. Taiwanese Middle School Students' Materialistic Concepts of Sound

    Science.gov (United States)

    Eshach, Haim; Lin, Tzu-Chiang; Tsai, Chin-Chung

    2016-01-01

    This study investigated if and to what extent grade 8 and 9 students in Taiwan attributed materialistic properties to sound concepts, and whether they hold scientific views in parallel with materialistic views. Taiwanese middle school students are a special population since their scores in international academic comparison tests such as TIMSS and…

  13. The Effect of Cooperative Learning on Middle School Math Students

    Science.gov (United States)

    Remillard, Heather A.

    2015-01-01

    The purpose of this study was to explore cooperative learning and the impact on middle school students overall academic achievement. The study included 47 students from a small private school, ranging from grades sixth through eighth. The researcher examined student perception of cooperative learning, implementation process and the overall impact…

  14. Extricating Justification Scheme Theory in Middle School Mathematical Problem Solving

    Science.gov (United States)

    Matteson, Shirley; Capraro, Mary Margaret; Capraro, Robert M.; Lincoln, Yvonna S.

    2012-01-01

    Twenty middle grades students were interviewed to gain insights into their reasoning about problem-solving strategies using a Problem Solving Justification Scheme as our theoretical lens and the basis for our analysis. The scheme was modified from the work of Harel and Sowder (1998) making it more broadly applicable and accounting for research…

  15. Cyberbullying in Turkish Middle Schools: An Exploratory Study

    Science.gov (United States)

    Yilmaz, Harun

    2011-01-01

    This study explored Turkish students' experience of cyberbullying and their use of social networking tools. A total of 756 7th-grade students participated from eight different middle schools in Istanbul, the largest city of Turkey. A 15-item questionnaire was used in a classroom environment to collect data. Results revealed that male students were…

  16. Psychometric Properties of Maze Tasks in Middle School Students

    Science.gov (United States)

    Tolar, Tammy D.; Barth, Amy E.; Francis, David J.; Fletcher, Jack M.; Stuebing, Karla K.; Vaughn, Sharon

    2012-01-01

    Maze tasks have appealing properties as progress-monitoring tools, but there is a need for a thorough examination of the psychometric properties of Maze tasks among middle school students. We evaluated form effects, reliability, validity, and practice effects of Maze among students in Grades 6 through 8. We administered the same (familiar) and…

  17. Metacognitive instruction in middle school science

    Science.gov (United States)

    Bonney, Dianna

    The purpose of this action research project was to determine the extent to which metacognitive instruction affected students' performance in the middle-grade science classroom. Conducted with four seventh grade science classes over a three-month time period, 105 students were engaged in 21 metacognitively enhanced lessons. Both quantitative and qualitative data sources were collected for this study and analyzed according to grounded theory methodology. Quantitative data came from the Jr. Metacognitive Awareness Inventory, administered as a pre-post test. Qualitative teacher-generated data was collected in a metacognitive observation protocol containing observations and reflections while student-generated data was gathered from reflective journal entries, modified rubrics, and checklists. Analysis of the data led to the assertions that metacognitive development occurred over time through systematic and varied implementation of explicit instruction. In addition, students perceived they learned best both when working collaboratively and when making multiple connections with content material. Implications for middle-grade teachers include the need for explicit instruction of metacognitive strategies, providing for instructional variation and student collaboration, and guiding students in making connections to prior learning.

  18. Uniforms in the Middle School: Student Opinions, Discipline Data, and School Police Data

    Science.gov (United States)

    Sanchez, Jafeth E.; Yoxsimer, Andrew; Hill, George C.

    2012-01-01

    This study investigated public middle school students' opinions on the benefits of wearing a school uniform. A review of related literature is provided along with results of the opinions obtained from 604 seventh- and eighth-grade middle school students attending a public school in Nevada that had recently initiated a school uniform policy.…

  19. Social Withdrawal, Peer Rejection, and Peer Victimization in Taiwanese Middle School Students

    Science.gov (United States)

    Wei, Hsi-Sheng; Chen, Ji-Kang

    2009-01-01

    This study aims to examine the relationships between social withdrawal, peer rejection and peer victimization among Taiwanese middle school students as well as to explore the applicability of relevant models in an East Asia culture context. The sample of this study consists of 219 7th grade students from middle schools in Taiwan. Data from…

  20. Middle School Transition Stress: Links with Academic Performance, Motivation, and School Experiences

    Science.gov (United States)

    Goldstein, Sara E.; Boxer, Paul; Rudolph, Erin

    2015-01-01

    The present study investigates links between early adolescents' subjective experiences of stress associated with the middle school transition and their academic outcomes. Seventh and eighth grade students (N?=?774) were surveyed about their experiences during their transition to middle school. Students answered questions about stress…

  1. Effect of Middle School Students' Motivation to Learn Technology on Their Attitudes toward Engineering

    Science.gov (United States)

    Kwon, Hyuksoo

    2016-01-01

    The purpose of this study was to investigate the effect of motivation to learn technology, as perceived by South Korean middle school students, on their attitudes toward engineering. Using the instruments of Glynn et al. (2011) and Lee (2008), the study focused on eighth and ninth grade students in four middle schools located in South Korea's…

  2. Smokey Road Middle School: Striving to Reach and Motivate Each Child

    Science.gov (United States)

    Principal Leadership, 2011

    2011-01-01

    This article features Smokey Road Middle School, a Title I school serving 850 middle level students in grades 6-8. The school is located on the outskirts of Newnan, Georgia, a historic city of approximately 27,000 residents. The growth and development of the Coweta County School District is largely attributed to its close proximity to Atlanta. In…

  3. Strategic Alliances in Mid South Middle Start: Building Capacity, Creating a Movement

    Science.gov (United States)

    Academy for Educational Development, 2004

    2004-01-01

    In order to fulfill its mission of middle-grades education reform, the Mid South Middle Start initiative works with schools, organizations, and institutions to improve the social and academic outcomes of students aged 10-14. A vital element of this endeavor is the creation of linkages by the core group of organizational partners with relevant…

  4. The Spread of Islam in the Niger and Senegal Valleys before the Rise of Almoravids

    Directory of Open Access Journals (Sweden)

    Ahmed Elyas Hussein

    2001-12-01

    Full Text Available This study traces the early contacts of the middle and upper Niger and Senegal Rivers with the Muslims in the first five centuries after hijrah and shows the spread of Islam and the rise of states long before the emergence of Al-Moravids. It analyses the early Muslim expansion in the Western Sahara, the role of the Ibāḍiyyah in central Sahara and the efforts of the Sanhadja in the Western Sahara which resulted in the spread of Islam and rise of Islamic kingdoms in the Niger and the Senegal Valleys before the 5th centaury AH.

  5. The numerical study of the compressible rising of nuclear fireball at low altitude

    International Nuclear Information System (INIS)

    Wang Lin; Zheng Yi; Cheng Xianyou

    2010-01-01

    To study the evolution of nuclear fireball during the phase of compressible rising, the pressure and density were computed with numerical method. It can be concluded that the distribution of parameters of fireball changed during its rising the pressure in the upper part of fireball increased while the one of lower part decreased. the dilute area lied in the middle of fireball initially moved upward, on the other hand, the gradient of density in the upper and side part increased and is contrary to the changing of density beneath the fireball. The computational results of density agreed with experimental shadow graphs very well. (authors)

  6. Rising tides, rising gates: The complex ecogeomorphic response of coastal wetlands to sea-level rise and human interventions

    Science.gov (United States)

    Sandi, Steven G.; Rodríguez, José F.; Saintilan, Neil; Riccardi, Gerardo; Saco, Patricia M.

    2018-04-01

    Coastal wetlands are vulnerable to submergence due to sea-level rise, as shown by predictions of up to 80% of global wetland loss by the end of the century. Coastal wetlands with mixed mangrove-saltmarsh vegetation are particularly vulnerable because sea-level rise can promote mangrove encroachment on saltmarsh, reducing overall wetland biodiversity. Here we use an ecogeomorphic framework that incorporates hydrodynamic effects, mangrove-saltmarsh dynamics, and soil accretion processes to assess the effects of control structures on wetland evolution. Migration and accretion patterns of mangrove and saltmarsh are heavily dependent on topography and control structures. We find that current management practices that incorporate a fixed gate for the control of mangrove encroachment are useful initially, but soon become ineffective due to sea-level rise. Raising the gate, to counteract the effects of sea level rise and promote suitable hydrodynamic conditions, excludes mangrove and maintains saltmarsh over the entire simulation period of 100 years

  7. On middle cube graphs

    Directory of Open Access Journals (Sweden)

    C. Dalfo

    2015-10-01

    Full Text Available We study a family of graphs related to the $n$-cube. The middle cube graph of parameter k is the subgraph of $Q_{2k-1}$ induced by the set of vertices whose binary representation has either $k-1$ or $k$ number of ones. The middle cube graphs can be obtained from the well-known odd graphs by doubling their vertex set. Here we study some of the properties of the middle cube graphs in the light of the theory of distance-regular graphs. In particular, we completely determine their spectra (eigenvalues and their multiplicities, and associated eigenvectors.

  8. Traditional and Digital Game Preferences of Children: A CHAID Analysis on Middle School Students

    Science.gov (United States)

    Tatli, Zeynep

    2018-01-01

    The purpose of this study is to determine types of games that middle school students play in their daily lives and analyze the effects of various variables such as gender, available technology, grade in school and parents' education levels on their game preferences. The sample consisted of a total of 464 grade 5-8 students (212 girls and 252…

  9. Executive Functioning Predicts Academic Achievement in Middle School: A Four-Year Longitudinal Study

    Science.gov (United States)

    Samuels, William Ellery; Tournaki, Nelly; Blackman, Sheldon; Zilinski, Christopher

    2016-01-01

    Executive functioning (EF) is a strong predictor of children's and adolescents' academic performance. Although research indicates that EF can increase during childhood and adolescence, few studies have tracked the effect of EF on academic performance throughout the middle school grades. EF was measured at the end of Grades 6-9 through 21 teachers'…

  10. Gender-Based Education: Why It Works at the Middle School Level.

    Science.gov (United States)

    Perry, William C.

    1996-01-01

    To counter gender bias effects and improve student learning, staff at a Virginia middle school decided to group eighth-grade students by gender for math and science instruction. Girls felt freer to speak out. Grade point averages in gender-based science and math classes for both girls and boys were higher than in coeducational classes. (MLH)

  11. CRA Grade Inflation

    OpenAIRE

    Kenneth H. Thomas

    2000-01-01

    Community Reinvestment Act of 1977 (CRA) ratings and performance evaluations are the only bank and thrift exam findings disclosed by financial institution regulators. Inflation of CRA ratings has been alleged by community activists for two decades, but there has been no quantification or empirical investigation of grade inflation. Using a unique grade inflation methodology on actual ratings and evaluation data for 1,407 small banks and thrifts under the revised CRA regulations, this paper con...

  12. Functionally graded materials

    CERN Document Server

    Mahamood, Rasheedat Modupe

    2017-01-01

    This book presents the concept of functionally graded materials as well as their use and different fabrication processes. The authors describe the use of additive manufacturing technology for the production of very complex parts directly from the three dimension computer aided design of the part by adding material layer after layer. A case study is also presented in the book on the experimental analysis of functionally graded material using laser metal deposition process.

  13. Buckling Response of Thick Functionally Graded Plates

    Directory of Open Access Journals (Sweden)

    BOUAZZA MOKHTAR

    2014-11-01

    Full Text Available In this paper, the buckling of a functionally graded plate is studied by using first order shear deformation theory (FSDT. The material properties of the plate are assumed to be graded continuously in the direction of thickness. The variation of the material properties follows a simple power-law distribution in terms of the volume fractions of constituents. The von Karman strains are used to construct the equilibrium equations of the plates subjected to two types of thermal loading, linear temperature rise and gradient through the thickness are considered. The governing equations are reduced to linear differential equation with boundary conditions yielding a simple solution procedure. In addition, the effects of temperature field, volume fraction distributions, and system geometric parameters are investigated. The results are compared with the results of the no shear deformation theory (classic plate theory, CPT.

  14. Adrenarche and middle childhood.

    Science.gov (United States)

    Campbell, Benjamin C

    2011-09-01

    Middle childhood, the period from 6 to 12 years of age, is defined socially by increasing autonomy and emotional regulation, somatically by the development of anatomical structures for subsistence, and endocrinologically by adrenarche, the adrenal production of dehydroepiandrosterone (DHEA). Here I suggest that DHEA plays a key role in the coordinated development of the brain and body beginning with middle childhood, via energetic allocation. I argue that with adrenarche, increasing levels of circulating DHEA act to down-regulate the release of glucose into circulation and hence limit the supply of glucose which is needed by the brain for synaptogenesis. Furthermore, I suggest the antioxidant properties of DHEA may be important in maintaining synaptic plasticity throughout middle childhood within slow-developing areas of the cortex, including the insula, thamalus, and anterior cingulate cortex. In addition, DHEA may play a role in the development of body odor as a reliable social signal of behavioral changes associated with middle childhood.

  15. Ear Infection (Middle Ear)

    Science.gov (United States)

    ... secretions from the middle ear Swelling, inflammation and mucus in the eustachian tubes from an upper respiratory ... your baby for at least six months. Breast milk contains antibodies that may offer protection from ear ...

  16. Middle-State Caregiving

    Science.gov (United States)

    ... Caregiving Middle-Stage Caregiving Late-Stage Caregiving Behaviors Aggression & Anger Anxiety & Agitation Depression Hallucinations Memory Loss & Confusion Repetition Sleep Issues & Sundowning Suspicion & Delusions Wandering Abuse Start Here What You Need to Know Online ...

  17. Climate Adaptation and Sea Level Rise

    Science.gov (United States)

    EPA supports the development and maintenance of water utility infrastructure across the country. Included in this effort is helping the nation’s water utilities anticipate, plan for, and adapt to risks from flooding, sea level rise, and storm surge.

  18. Rise of the machines: the effects of labor-saving innovations on jobs and wages

    OpenAIRE

    Andy Feng; Georg Graetz

    2015-01-01

    Job polarization the rise in employment shares of high and low skill jobs at the expense of middle skill jobs occurred in the US not just recently, but also in the late nineteenth and early twentieth centuries. We argue that in each case polarization resulted from increased automation, and provide a theoretical explanation. In our model, firms deciding whether to employ machines or workers in a given task weigh the cost of using machines, which is increasing in the complexity (in an engineeri...

  19. Rescuing Middle School Astronomy

    Science.gov (United States)

    Mayo, L. A.; Janney, D.

    2010-12-01

    There is a crisis in education at the middle school level (Spellings, 2006). Recent studies point to large disparities in middle school performance in schools with high minority populations. The largest disparities exist in areas of math and science. Astronomy has a universal appeal for K-12 students but is rarely taught at the middle school level. When it is taught at all it is usually taught in isolation with few references in other classes such as other sciences (e.g. physics, biology, and chemistry), math, history, geography, music, art, or English. The problem is greatest in our most challenged school districts. With scores in reading and math below national averages in these schools and with most state achievement tests ignoring subjects like astronomy, there is little room in the school day to teach about the world outside our atmosphere. Add to this the exceedingly minimal training and education in astronomy that most middle school teachers have and it is a rare school that includes any astronomy teaching at all. In this presentation, we show how to develop and offer an astronomy education training program for middle school teachers encompassing a wide range of educational disciplines that are frequently taught at the middle school level. The prototype for this program was developed and launched in two of the most challenged and diverse school systems in the country; D.C. Public Schools, and Montgomery County (MD) Public Schools.

  20. Interconnect rise time in superconducting integrating circuits

    International Nuclear Information System (INIS)

    Preis, D.; Shlager, K.

    1988-01-01

    The influence of resistive losses on the voltage rise time of an integrated-circuit interconnection is reported. A distribution-circuit model is used to present the interconnect. Numerous parametric curves are presented based on numerical evaluation of the exact analytical expression for the model's transient response. For the superconducting case in which the series resistance of the interconnect approaches zero, the step-response rise time is longer but signal strength increases significantly

  1. Examining the Impact and School-Level Predictors of Impact Variability of an 8th Grade Reading Intervention on At-Risk Students' Reading Achievement

    Science.gov (United States)

    Fien, Hank; Anderson, Daniel; Nelson, Nancy J.; Kennedy, Patrick; Baker, Scott K.; Stoolmiller, Michael

    2018-01-01

    The purpose of the present article is to report on a large-scale investigation of six school districts' implementation of an initiative aimed at reducing dropout rates by improving reading achievement in the middle grades. Data for the Middle School Intervention Project (MSIP) were collected in 25 middle schools across the state of Oregon. We…

  2. Peculiarities of Flexibility Development in Middle Schoolers

    Directory of Open Access Journals (Sweden)

    М. В. Солодовникова

    2015-09-01

    Full Text Available The paper objective is to define the peculiarities of flexibility development in middle schoolers. To solve the tasks set, the study used the following research methods: theoretical analysis and collation of scientific and methodological literature; pedagogical testing, methods of mathematical statistics. Research results. The testing analysis showed statistically unreliable deviations in the results displayed by the fifth-, sixth- and seventh-grade girls in the following tests: “Rotation in the shoulder joint with a staff”, “Backbend from the lying position”, “Forward bend from the sitting position” (p > 0.05. The fifth-, sixth- and seventh-grade girls show improvement in their statistically significant results (p < 0.05 in the following tests: “Raise up from the lying position to the sitting position in 30 seconds”, “Bending and unbending of arms in the lying position”. The testing analysis showed a statistically significant deterioration in the results displayed by the fifth-, sixth- and seventh-grade boys in the following tests: “Rotation in the shoulder joint with a staff”, “Backbend from the lying position” (p < 0.05. The fifth-, sixth- and seventh-grade boys show improvement in their statistically significant results (p < 0.05 in the test " Raise up from the lying position to the sitting position in 30 seconds”, and an improving tendency in the results in the test “Bending and unbending of arms in the lying position”. Conclusions. The informative indicators of flexibility and strength readiness of the 5th-7th-grade boys are “Rotation in the shoulder joint with a staff”, “Backbend from the lying position” and “Raise up from the lying position to the sitting position in 30 seconds”. The informative indicators of strength readiness of the 5th-7th-grade girls are “Raise up from the lying position to the sitting position in 30 seconds”, “Bending and unbending of arms in the lying

  3. Sixth-Grade Aeronauts.

    Science.gov (United States)

    Flick, Larry; Dejmal, Ked

    1989-01-01

    An activity which combines problem solving with the history and science of hot air balloons is presented. Instructions for making and launching tissue-paper balloons are provided. The advantage of using manipulative materials with middle school students is discussed. (CW)

  4. Contractions from grading

    Science.gov (United States)

    Krishnan, Chethan; Raju, Avinash

    2018-04-01

    We note that large classes of contractions of algebras that arise in physics can be understood purely algebraically via identifying appropriate Zm-gradings (and their generalizations) on the parent algebra. This includes various types of flat space/Carroll limits of finite and infinite dimensional (A)dS algebras, as well as Galilean and Galilean conformal algebras. Our observations can be regarded as providing a natural context for the Grassmann approach of Krishnan et al. [J. High Energy Phys. 2014(3), 36]. We also introduce a related notion, which we call partial grading, that arises naturally in this context.

  5. Socioecological Aspects of High-rise Construction

    Science.gov (United States)

    Eichner, Michael; Ivanova, Zinaida

    2018-03-01

    In this article, the authors consider the socioecological problems that arise in the construction and operation of high-rise buildings. They study different points of view on high-rise construction and note that the approaches to this problem are very different. They also analyse projects of modern architects and which attempts are made to overcome negative impacts on nature and mankind. The article contains materials of sociological research, confirming the ambivalent attitude of urban population to high-rise buildings. In addition, one of the author's sociological survey reveals the level of environmental preparedness of the university students, studying in the field of "Construction of unique buildings and structures", raising the question of how future specialists are ready to take into account socioecological problems. Conclusion of the authors: the construction of high-rise buildings is associated with huge social and environmental risks, negative impact on the biosphere and human health. This requires deepened skills about sustainable design methods and environmental friendly construction technologies of future specialists. Professor M. Eichner presents in the article his case study project results on implementation of holistic eco-sustainable construction principles for mixed-use high-rise building in the metropolis of Cairo.

  6. Strategic advantages of high-rise construction

    Directory of Open Access Journals (Sweden)

    Yaskova Natalya

    2018-01-01

    Full Text Available Traditional methods to assess the competitiveness of different types of real estate in the context of huge changes of new technological way of life don’t provide building solutions that would be correct from a strategic perspective. There are many challenges due to changes in the consumers’ behavior in the housing area. A multiplicity of life models, a variety of opportunities and priorities, traditions and new trends in construction should be assessed in terms of prospective benefits in the environment of the emerging new world order. At the same time, the mane discourse of high-rise construction mainly relates to its design features, technical innovations, and architectural accents. We need to clarify the criteria for economic evaluation of high-rise construction in order to provide decisions with clear and quantifiable contexts. The suggested approach to assessing the strategic advantage of high-rise construction and the prospects for capitalization of high-rise buildings poses new challenges for the economy to identify adequate quantitative assessment methods of the high-rise buildings economic efficiency, taking into account all stages of their life cycle.

  7. Socioecological Aspects of High-rise Construction

    Directory of Open Access Journals (Sweden)

    Eichner Michael

    2018-01-01

    Full Text Available In this article, the authors consider the socioecological problems that arise in the construction and operation of high-rise buildings. They study different points of view on high-rise construction and note that the approaches to this problem are very different. They also analyse projects of modern architects and which attempts are made to overcome negative impacts on nature and mankind. The article contains materials of sociological research, confirming the ambivalent attitude of urban population to high-rise buildings. In addition, one of the author’s sociological survey reveals the level of environmental preparedness of the university students, studying in the field of "Construction of unique buildings and structures", raising the question of how future specialists are ready to take into account socioecological problems. Conclusion of the authors: the construction of high-rise buildings is associated with huge social and environmental risks, negative impact on the biosphere and human health. This requires deepened skills about sustainable design methods and environmental friendly construction technologies of future specialists. Professor M. Eichner presents in the article his case study project results on implementation of holistic eco-sustainable construction principles for mixed-use high-rise building in the metropolis of Cairo.

  8. Strategic advantages of high-rise construction

    Science.gov (United States)

    Yaskova, Natalya

    2018-03-01

    Traditional methods to assess the competitiveness of different types of real estate in the context of huge changes of new technological way of life don't provide building solutions that would be correct from a strategic perspective. There are many challenges due to changes in the consumers' behavior in the housing area. A multiplicity of life models, a variety of opportunities and priorities, traditions and new trends in construction should be assessed in terms of prospective benefits in the environment of the emerging new world order. At the same time, the mane discourse of high-rise construction mainly relates to its design features, technical innovations, and architectural accents. We need to clarify the criteria for economic evaluation of high-rise construction in order to provide decisions with clear and quantifiable contexts. The suggested approach to assessing the strategic advantage of high-rise construction and the prospects for capitalization of high-rise buildings poses new challenges for the economy to identify adequate quantitative assessment methods of the high-rise buildings economic efficiency, taking into account all stages of their life cycle.

  9. A Contribution To The Understanding Of Middle Eastern and Muslim Exceptionalism

    DEFF Research Database (Denmark)

    Hariri, Jacob Gerner

    2015-01-01

    The democratic deficit in the Middle East and the Muslim world is well-established. No study has, however, identified what it is about being a Middle Eastern or Muslim-majority country that impedes democracy. The explanatory deficit has given rise to an idea of Middle Eastern....... If they were colonized, territories with more developed state structures were more likely to experience an indirect form of colonial rule. Such territories, including the Islamic heartland in the Middle East, experienced less European settlement and colonial rule through local intermediaries and were therefore...

  10. Design of Control System for Kiwifruit Automatic Grading Machine

    Directory of Open Access Journals (Sweden)

    Xingjian Zuo

    2013-05-01

    Full Text Available The kiwifruit automatic grading machine is an important machine for postharvest processing of kiwifruit, and the control system ensures that the machine realizes intelligence. The control system for the kiwifruit automatic grading machine designed in this paper comprises a host computer and a slave microcontroller. The host computer provides a visual grading interface for the machine with a LabVIEW software, the slave microcontroller adopts an STC89C52 microcontroller as its core, and C language is used to write programs for controlling a position sensor module, push-pull type electromagnets, motor driving modules and a power supply for controlling the operation of the machine as well as the rise or descend of grading baffle plates. The ideal control effect is obtained through test, and the intelligent operation of the machine is realized.

  11. Beam Induced Pressure Rise at RHIC

    CERN Document Server

    Zhang, S Y; Bai, Mei; Blaskiewicz, Michael; Cameron, Peter; Drees, Angelika; Fischer, Wolfram; Gullotta, Justin; He, Ping; Hseuh Hsiao Chaun; Huang, Haixin; Iriso, Ubaldo; Lee, Roger C; Litvinenko, Vladimir N; MacKay, William W; Nicoletti, Tony; Oerter, Brian; Peggs, Steve; Pilat, Fulvia Caterina; Ptitsyn, Vadim; Roser, Thomas; Satogata, Todd; Smart, Loralie; Snydstrup, Louis; Thieberger, Peter; Trbojevic, Dejan; Wang, Lanfa; Wei, Jie; Zeno, Keith

    2005-01-01

    Beam induced pressure rise in RHIC warm sections is currently one of the machine intensity and luminosity limits. This pressure rise is mainly due to electron cloud effects. The RHIC warm section electron cloud is associated with longer bunch spacings compared with other machines, and is distributed non-uniformly around the ring. In addition to the countermeasures for normal electron cloud, such as the NEG coated pipe, solenoids, beam scrubbing, bunch gaps, and larger bunch spacing, other studies and beam tests toward the understanding and counteracting RHIC warm electron cloud are of interest. These include the ion desorption studies and the test of anti-grazing ridges. For high bunch intensities and the shortest bunch spacings, pressure rises at certain locations in the cryogenic region have been observed during the past two runs. Beam studies are planned for the current 2005 run and the results will be reported.

  12. Rising Long-term Interest Rates

    DEFF Research Database (Denmark)

    Hallett, Andrew Hughes

    Rather than chronicle recent developments in European long-term interest rates as such, this paper assesses the impact of increases in those interest rates on economic performance and inflation. That puts us in a position to evaluate the economic pressures for further rises in those rates......, the first question posed in this assignment, and the scope for overshooting (the second question), and then make some illustrative predictions of future interest rates in the euro area. We find a wide range of effects from rising interest rates, mostly small and mostly negative, focused on investment...... till the emerging European recovery is on a firmer basis and capable of overcoming increases in the cost of borrowing and shrinking fiscal space. There is also an implication that worries about rising/overshooting interest rates often reflect the fact that inflation risks are unequally distributed...

  13. World review: Middle East

    International Nuclear Information System (INIS)

    Anon.

    2000-01-01

    The article gives information on contracts announced (and to whom) and recently completed in some parts of the Middle East in the petroleum, natural gas and petrochemicals industries. Areas specifically mentioned are Bahrain, Egypt, Iran, Libya, Oman, Qatar, Saudi Arabia, Syria and the United Arab Emirates. The prospects for the petrochemical industry in particular are good and continued growth is expected. Gas is likely to make an increasingly important contribution to the prosperity of the Middle East and is expected to carry a higher priority than expansion of crude oil production

  14. The 1988 coal outlook: steadily rising consumption

    Energy Technology Data Exchange (ETDEWEB)

    Soras, C.G.; Stodden, J.R.

    1987-12-01

    Total coal use - domestic and foreign - will reach 910 million tons in 1988, an expansion of 1.3% from an estimated 898 million tons in 1987. The overall rise in consumption will add to inventory needs. Moreover, lower interest rates cut effective carrying costs and further encourage the holding of coal stocks by users. The results will be a gain in inventories of 3.5 tons by the end of 1988. As a result of all these factors, coal production is anticipated to rise by 11.6 million tons, or 1.2%, which projects firm markets in a time of relatively soft economic conditions in the USA. 2 tabs.

  15. Endangered Animals. Second Grade.

    Science.gov (United States)

    Popp, Marcia

    This second grade teaching unit centers on endangered animal species around the world. Questions addressed are: What is an endangered species? Why do animals become extinct? How do I feel about the problem? and What can I do? Students study the definition of endangered species and investigate whether it is a natural process. They explore topics…

  16. Calculating Student Grades.

    Science.gov (United States)

    Allswang, John M.

    1986-01-01

    This article provides two short microcomputer gradebook programs. The programs, written in BASIC for the IBM-PC and Apple II, provide statistical information about class performance and calculate grades either on a normal distribution or based on teacher-defined break points. (JDH)

  17. Grades as Information

    Science.gov (United States)

    Grant, Darren

    2007-01-01

    We determine how much observed student performance in microeconomics principles can be attributed, inferentially, to three kinds of student academic "productivity," the instructor, demographics, and unmeasurables. The empirical approach utilizes an ordered probit model that relates student performance in micro to grades in prior…

  18. First Grade Baseline Evaluation

    Science.gov (United States)

    Center for Innovation in Assessment (NJ1), 2013

    2013-01-01

    The First Grade Baseline Evaluation is an optional tool that can be used at the beginning of the school year to help teachers get to know the reading and language skills of each student. The evaluation is composed of seven screenings. Teachers may use the entire evaluation or choose to use those individual screenings that they find most beneficial…

  19. The Fifth Grade Classroom.

    Science.gov (United States)

    Hartman, Michael; And Others

    An interdisciplinary design project report investigates the relationship of the fifth grade educational facility to the student and teacher needs in light of human and environmental factors. The classroom, activity and teaching spaces are analyzed with regard to the educational curriculum. Specifications and design criteria concerning equipment…

  20. Cutting Class Harms Grades

    Science.gov (United States)

    Taylor, Lewis A., III

    2012-01-01

    An accessible business school population of undergraduate students was investigated in three independent, but related studies to determine effects on grades due to cutting class and failing to take advantage of optional reviews and study quizzes. It was hypothesized that cutting classes harms exam scores, attending preexam reviews helps exam…

  1. Does Taking One Step Back Get You Two Steps Forward? Grade Retention and School Performance in Poor Areas in Rural China

    Science.gov (United States)

    Chen, Xinxin; Liu, Chengfang; Zhang, Linxiu; Shi, Yaojiang; Rozelle, Scott

    2010-01-01

    Despite the rise in grade retention in poor areas in rural China recently, little work has been done to understand the impact of grade retention on the educational performance of students in these areas in rural China. This paper seeks to redress this shortcoming and examines the effect of grade retention on educational performance on 1649…

  2. Reactive rise in blood pressure upon cuff inflation: cuff inflation at the arm causes a greater rise in pressure than at the wrist in hypertensive patients.

    Science.gov (United States)

    Charmoy, Alexia; Würzner, Grégoire; Ruffieux, Christiane; Hasler, Christopher; Cachat, François; Waeber, Bernard; Burnier, Michel

    2007-10-01

    Cuff inflation at the arm is known to cause an instantaneous rise in blood pressure, which might be due to the discomfort of the procedure and might interfere with the precision of the blood pressure measurement. In this study, we compared the reactive rise in blood pressure induced by cuff inflation when the cuff was placed at the upper arm level and at the wrist. The reactive rise in systolic and diastolic blood pressure to cuff inflation was measured in 34 normotensive participants and 34 hypertensive patients. Each participant was equipped with two cuffs, one around the right upper arm (OMRON HEM-CR19, 22-32 cm) and one around the right wrist (OMRON HEM-CS 19, 17-22 cm; Omron Health Care Europe BV, Hoofddorp, The Netherlands). The cuffs were inflated in a double random order (maximal cuff pressure and position of the cuff) with two maximal cuff pressures: 180 and 240 mmHg. The cuffs were linked to an oscillometric device (OMRON HEM 907; Omron Health Care). Simultaneously, blood pressure was measured continuously at the middle finger of the left hand using photoplethysmography. Three measurements were made at each level of blood pressure at the arm and at the wrist, and the sequence of measurements was randomized. In normotensive participants, no significant difference was observed in the reactive rise in blood pressure when the cuff was inflated either at the arm or at the wrist irrespective of the level of cuff inflation. Inflating a cuff at the arm, however, induced a significantly greater rise in blood pressure than inflating it at the wrist in hypertensive participants for both systolic and diastolic pressures (Pblood pressure response to cuff inflation was independent of baseline blood pressure. The results show that in hypertensive patients, cuff inflation at the wrist produces a smaller reactive rise in blood pressure. The difference between the arm and the wrist is independent of the patient's level of blood pressure.

  3. Middle Level Learning.

    Science.gov (United States)

    Wyman, Richard M., Jr.; Young, Katherine A.; Sliger, Bruce; Kafi, Patricia; Singer, Alan; Lamme, Linda Leonard

    1998-01-01

    Presents five brief articles related to middle-level learning. The articles are, "Using Children's Diaries to Teach the Oregon Trail"; "Living the Geography of Joseph and Temperance Brown"; "The ABCs of Small Grant Acquisition for Social Studies"; "Isomo Loruko: The Yoruba Naming Ceremony"; and "Child…

  4. Middle ear effusion

    African Journals Online (AJOL)

    NJSR

    Bone scan showed a hot spot in the right mastoid. Magnetic resonance imaging of the petrous ridges showed an irregular enhancing mass eroding and occupying the middle and inferior aspects of the right petrous temporal bone. This extended into the adjacent occipital bone, occipital condyle and the posterior cranial ...

  5. Utopia Middle School

    Science.gov (United States)

    Cloud, Michelle

    2006-01-01

    The following excerpt allows the reader to briefly peer into an ideal school setting: For the purposes of this paper, the fictitious school will be named Utopia Middle School or U.M.S. U.M.S embodies and exemplifies the perfect school. At U.M.S., the campus administrators perform at a level of excellence that motivates, empowers and supports all…

  6. The Middle Income Squeeze

    Science.gov (United States)

    Glover, Steve

    1978-01-01

    Complaints about a middle income family's hardships in sending their children to private colleges and universities are examined. The difficulty may be attributable to a progressive College Scholarship Service (CSS) taxation rate schedule that causes larger proportionate reductions in the standard of living for some families than others.…

  7. Middle ear implants

    Directory of Open Access Journals (Sweden)

    K S Gangadhara Somayaji

    2013-01-01

    Full Text Available Hearing loss is becoming more common in the society living in cities with lot of background noise around, and frequent use of gadgets like mobile phones, MP3s, and IPods are adding to the problem. The loss may involve the conductive or perceptive pathway. Majority of the patients with conductive hearing loss will revert back to normal hearing levels with medical and/or surgical treatment. However, in sensorineural hearing loss, many factors are involved in the management. Though traditionally hearing aids in various forms are the most commonly used modality in managing these patients, there are some drawbacks associated with them. Implantable middle ear amplifiers represent the most recent breakthrough in the management of hearing loss. Middle ear implants are surgically implanted electronic devices that aim to correct hearing loss by stimulating the ossicular chain or middle ear. Of late, they are also being used in the management of congenital conductive hearing loss and certain cases of chronic otitis media with residual hearing loss. The article aims to provide general information about the technology, indications and contraindications, selection of candidates, available systems, and advantages of middle ear implants. (MEI

  8. Middle East political stability

    OpenAIRE

    2008-01-01

    Henry Siegman asks whether the next US President can rescue a two-state solution to the Israel–Palestine conflict; Lakhdar Brahimi discusses Iran – war or peace in the Middle East?; Eric Rouleau assesses the Iranian nuclear threat; Walid Khadduri looks at concerns over the future of Iraq and regional implications.

  9. Middle Schoolers Go Global

    Science.gov (United States)

    Wise, Mark; McTighe, Jay

    2017-01-01

    From global hunger to the world's water crisis, middle school students at New Jersey's West Windsor-Plainsboro Regional School District spend the last few days of the school year problem solving about the planet's most dire issues. With the Global Challenge, the school district's administrators not only want to implement an interesting and dynamic…

  10. When Mothers and Fathers Are Seen as Disproportionately Valuing Achievements: Implications for Adjustment Among Upper Middle Class Youth

    Science.gov (United States)

    Ciciolla, Lucia; Curlee, Alexandria S.; Karageorge, Jason; Luthar, Suniya S.

    2016-01-01

    High achievement expectations and academic pressure from parents have been implicated in rising levels of stress and reduced well-being among adolescents. In this study of affluent, middle-school youth, we examined how perceptions of parents' emphasis on achievement (relative to prosocial behavior) influenced youth's psychological adjustment and school performance, and examined perceived parental criticism as a possible moderator of this association. The data were collected from 506 (50% female) middle school students from a predominately white, upper-middle-class community. Students reported their perceptions of parents' values by rank ordering a list of achievement- and prosocial-oriented goals based on what they believed was most valued by their mothers and fathers for them (the child) to achieve. The data also included students' reports of perceived parental criticism, internalizing symptoms, externalizing symptoms, and self-esteem, as well as school-based data on grade point average and teacher-reported classroom behavior. Person-based analyses revealed six distinct latent classes based on perceptions of both mother and father emphases on achievement. Class comparisons showed a consistent pattern of healthier child functioning, including higher school performance, higher self-esteem, and lower psychological symptoms, in association with low to neutral parental achievement emphasis, whereas poorer child functioning was associated with high parental achievement emphasis. In variable-based analyses, interaction effects showed elevated maladjustment when high maternal achievement emphasis coexisted with high (but not low) perceived parental criticism. Results of the study suggest that to foster early adolescents' well-being in affluent school settings, parents focus on prioritizing intrinsic, prosocial values that promote affiliation and community, at least as much as, or more than, they prioritize academic performance and external achievement; and strive to limit

  11. The Rise of the Digital Public Library

    Science.gov (United States)

    McKendrick, Joseph

    2012-01-01

    There is a growing shift to digital offerings among public libraries. Libraries increasingly are fulfilling roles as technology hubs for their communities, with high demand for technology and career development training resources. Ebooks and other digital materials are on the rise, while print is being scaled back. More libraries are turning to…

  12. Rise time spectroscopy in cadmium telluride detectors

    International Nuclear Information System (INIS)

    Scharager, Claude; Siffert, Paul; Carnet, Bernard; Le Meur, Roger.

    1980-11-01

    By a simultaneous analysis of rise time and pulse amplitude distributions of the signals issued from various cadmium telluride detectors, it is possible to obtain informations about surface and bulk trapping, field distribution within the detectors, as well as charge collection and transport properties. These investigations have been performed on both pure and chlorine doped and materials for various surfaces preparation conditions [fr

  13. How oxygen gave rise to eukaryotic sex

    NARCIS (Netherlands)

    Hörandl, Elvira; Speijer, Dave

    2018-01-01

    9years ago. The large amount of ROS coming from a bacterial endosymbiont gave rise to DNA damage and vast increases in host genome mutation rates. Eukaryogenesis and chromosome evolution represent adaptations to oxidative stress. The host, an archaeon, most probably already had repair mechanisms

  14. Rising Political Consciousness: Transformational Learning in Malaysia.

    Science.gov (United States)

    Kamis, Mazalan; Muhamad, Mazanah

    As part of a larger study (not discussed) ten educated Malaysian citizens were interviewed to find whether their rising political consciousness, over a ten year period (1988-1999), indicated that their transformation was influenced by their culture. The subjects were between 35-45 years old, married, with an average of four children. All were…

  15. Can income redistribution help changing rising inequality?

    NARCIS (Netherlands)

    Salverda, W.

    2014-01-01

    In this article compares the rise in inequality concerning net household incomes in a number of European countries and Canada, the USA and Australia. Two important factors are used to explain this worrying trend: a growing of unequal market incomes and/or a declining redistribution of income through

  16. Why does a spinning egg rise?

    Science.gov (United States)

    Cross, Rod

    2018-03-01

    Experimental and theoretical results are presented concerning the rise of a spinning egg. It was found that an egg rises quickly while it is sliding and then more slowly when it starts rolling. The angular momentum of the egg projected in the XZ plane changed in the same direction as the friction torque, as expected, by rotating away from the vertical Z axis. The latter result does not explain the rise. However, an even larger effect arises from the Y component of the angular momentum vector. As the egg rises, the egg rotates about the Y axis, an effect that is closely analogous to rotation of the egg about the Z axis. Both effects can be described in terms of precession about the respective axes. Steady precession about the Z axis arises from the normal reaction force in the Z direction, while precession about the Y axis arises from the friction force in the Y direction. Precession about the Z axis ceases if the normal reaction force decreases to zero, and precession about the Y axis ceases if the friction force decreases to zero.

  17. Sea level rise : A literature survey

    NARCIS (Netherlands)

    Oude Essink, G.H.P.

    1992-01-01

    In order to assess the impact of sea level rise on Water Management, it is useful to understand the mechanisrns that determine the level of the sea. In this study, a literature survey is executed to analyze these mechanisms. Climate plays a centra! role in these mechanisms, Climate mainly changes

  18. Tube temperature rise limits: Boiling considerations

    Energy Technology Data Exchange (ETDEWEB)

    Vanderwater, R.G.

    1952-03-26

    A revision of tube power limits based on boiling considerations was presented earlier. The limits were given on a basis of tube power versus header pressure. However, for convenience of operation, the limits have been converted from tube power to permissible water temperature rise. The permissible {triangle}t`s water are given in this document.

  19. The economic consequences of oil price rise

    International Nuclear Information System (INIS)

    Lescaroux, Francois

    2006-05-01

    The author discusses the possible consequences of oil barrel price rise. First, he discusses the main results of analysis's which have been performed for thirty years regarding the impact of oil price on economical activity. He proposes interpretations of these studies and of their conclusions, and tries to draw lessons regarding effects which can be expected from the recent evolutions of energy markets

  20. The Enigma of Mercury's Northern Rise

    Science.gov (United States)

    James, P. B.

    2018-05-01

    Various aspects of the "northern rise" make it hard to explain: Its composition and chronology don't stand out from its surroundings, it seems to have uplifted late, and it has a huge gravity anomaly. We'll discuss the possible formation mechanisms.

  1. Investigating middle school students’ difficulties in mathematical literacy problems level 1 and 2

    Science.gov (United States)

    Setiawati, S.; Herman, T.; Jupri, A.

    2017-11-01

    The background of this study is the lack of mathematical literacy skills of students. The proficiency of students’ mathematical literacy skills based on the results of the PISA 2015 study shows that Indonesian students at the proficiency level 1. This fact gave rise to this study which aims to investigate middle school students’ difficulties in mathematical literacy problems level 1 and 2. Qualitative research was used in this study. An individual written test on mathematical literacy problems was administered, followed by interviews. The subjects of the study were 61 students grade VII in Bandung and 26 of them were interviewed afterward. Data analysis revealed that students’ error in performing arithmetic most frequently observed. Other observed difficulties concerned understanding about algebra concept, applying arithmetic operation in algebraic expressions, and interpreting symbols to represent the unknown. In solving mathematical literacy problems, students use their prior knowledge, although sometimes not relevant to the questions. Based on the results, we suggest that mathematics learning in contextual learning and which invites students to participate in the processes of understanding the concepts.

  2. A vision of graded hemispheric specialization.

    Science.gov (United States)

    Behrmann, Marlene; Plaut, David C

    2015-11-01

    Understanding the process by which the cerebral hemispheres reach their mature functional organization remains challenging. We propose a theoretical account in which, in the domain of vision, faces and words come to be represented adjacent to retinotopic cortex by virtue of the need to discriminate among homogeneous exemplars. Orthographic representations are further constrained to be proximal to typically left-lateralized language-related information to minimize connectivity length between visual and language areas. As reading is acquired, orthography comes to rely more heavily (albeit not exclusively) on the left fusiform region to bridge vision and language. Consequently, due to competition from emerging word representations, face representations that were initially bilateral become lateralized to the right fusiform region (albeit, again, not exclusively). We review recent research that describes constraints that give rise to this graded hemispheric arrangement. We then summarize empirical evidence from a variety of studies (behavioral, evoked response potential, functional imaging) across different populations (children, adolescents, and adults; left handers and individuals with developmental dyslexia) that supports the claims that hemispheric lateralization is graded rather than binary and that this graded organization emerges dynamically over the course of development. Perturbations of this system either during development or in adulthood provide further insights into the principles governing hemispheric organization. © 2015 New York Academy of Sciences.

  3. Gender and Racial Differences: Development of Sixth Grade Students' Geometric Spatial Visualization within an Earth/Space Unit

    Science.gov (United States)

    Jackson, Christa; Wilhelm, Jennifer Anne; Lamar, Mary; Cole, Merryn

    2015-01-01

    This study investigated sixth-grade middle-level students' geometric spatial development by gender and race within and between control and experimental groups at two middle schools as they participated in an Earth/Space unit. The control group utilized a regular Earth/Space curriculum and the experimental group used a National Aeronautics and…

  4. Updating Maryland's sea-level rise projections

    Science.gov (United States)

    Boesch, Donald F.; Atkinson, Larry P.; Boicourt, William C.; Boon, John D.; Cahoon, Donald R.; Dalrymple, Robert A.; Ezer, Tal; Horton, Benjamin P.; Johnson, Zoe P.; Kopp, Robert E.; Li, Ming; Moss, Richard H.; Parris, Adam; Sommerfield, Christopher K.

    2013-01-01

    With its 3,100 miles of tidal shoreline and low-lying rural and urban lands, “The Free State” is one of the most vulnerable to sea-level rise. Historically, Marylanders have long had to contend with rising water levels along its Chesapeake Bay and Atlantic Ocean and coastal bay shores. Shorelines eroded and low-relief lands and islands, some previously inhabited, were inundated. Prior to the 20th century, this was largely due to the slow sinking of the land since Earth’s crust is still adjusting to the melting of large masses of ice following the last glacial period. Over the 20th century, however, the rate of rise of the average level of tidal waters with respect to land, or relative sea-level rise, has increased, at least partially as a result of global warming. Moreover, the scientific evidence is compelling that Earth’s climate will continue to warm and its oceans will rise even more rapidly. Recognizing the scientific consensus around global climate change, the contribution of human activities to it, and the vulnerability of Maryland’s people, property, public investments, and natural resources, Governor Martin O’Malley established the Maryland Commission on Climate Change on April 20, 2007. The Commission produced a Plan of Action that included a comprehensive climate change impact assessment, a greenhouse gas reduction strategy, and strategies for reducing Maryland’s vulnerability to climate change. The Plan has led to landmark legislation to reduce the state’s greenhouse gas emissions and a variety of state policies designed to reduce energy consumption and promote adaptation to climate change.

  5. Identify the consumption patterns of the second generation Chinese middle class. Does culture influence their consumption habits?

    OpenAIRE

    Liu, Kim Man

    2012-01-01

    Background: The 1978 political social reform in China has led to the emergence of the rapid and fast growing urban ‘middle class’ population. With the rise of the large population of middle class consumers, global market developers and opportunists are targeting this group of people to maximize their profits in developing countries. This research aimed to identify the consumption patterns of the second generation Chinese middle class and to investigate if their unique Chinese culture influenc...

  6. Middle East Respiratory Syndrome (MERS)

    Science.gov (United States)

    Middle East Respiratory Syndrome Coronavirus; MERS-CoV; Novel coronavirus; nCoV ... for Disease Control and Prevention website. Middle East Respiratory Syndrome (MERS): Frequently asked questions and answers. www. ...

  7. Inflated Grades, Enrollments & Budgets

    Directory of Open Access Journals (Sweden)

    J. E. Stone

    1995-06-01

    Full Text Available Reports of the past 13 years that call attention to deficient academic standards in American higher education are enumerated. Particular attention is given the Wingspread Group's recent An American Imperative: Higher Expectations for Higher Education. Low academic standards, grade inflation, and budgetary incentives for increased enrollment are analyzed and a call is made for research at the state level. Reported trends in achievement and GPAs are extrapolated to Tennessee and combined with local data to support the inference that 15% of the state's present day college graduates would not have earned a diploma by mid 1960s standards. A conspicuous lack of interest by public oversight bodies is noted despite a growing public awareness of low academic expectations and lenient grading and an implicit budgetary impact of over $100 million. Various academic policies and the dynamics of bureaucratic control are discussed in relationship to the maintenance of academic standards. The disincentives for challenging course requirements and responsible grading are examined, and the growing movement to address academic quality issues through better training and supervision of faculty are critiqued. Recommendations that would encourage renewed academic integrity and make learning outcomes visible to students, parents, employers, and the taxpaying public are offered and briefly discussed.

  8. Predicting Middle School Students' Use of Web 2.0 Technologies out of School Using Home and School Technological Variables

    Science.gov (United States)

    Hughes, Joan E.; Read, Michelle F.; Jones, Sara; Mahometa, Michael

    2015-01-01

    This study used multiple regression to identify predictors of middle school students' Web 2.0 activities out of school, a construct composed of 15 technology activities. Three middle schools participated, where sixth- and seventh-grade students completed a questionnaire. Independent predictor variables included three demographic and five computer…

  9. Identifying Factors in Successful Transformations from Junior High to Middle School: A Multi-Case Study Analysis

    Science.gov (United States)

    Shapiro, Michael N.

    2016-01-01

    This dissertation investigated the reasons that school districts chose to change the structure of their middle grades learning environments from the traditional junior high school to the newer middle school model. The study answers the following research questions: According to the perceptions of teachers, school and district administrators, and…

  10. Activities for Studying Ponds (Limnology), Grade Level 5-6. Environmental Education Series, Bulletin No. 247-D.

    Science.gov (United States)

    Montgomery County Public Schools, Rockville, MD.

    This bulletin is one in a series of environmental education activity guides for grades K-12, developed and field-tested by teachers in the Montgomery County (Maryland) Public Schools. Primarily for use in the middle grades four through six, the guides are not intended to constitute complete units in themselves. They are, rather, a compilation of…

  11. The Impact of Computer-Assisted Writing on Improving Writing Scores for Urban Eighth-Grade Students

    Science.gov (United States)

    Williams-Butler, LaTilya

    2016-01-01

    The purpose of this study was to investigate the impact standards-based aligned computer-assisted writing instruction had on improving writing scores for eighth-grade students that attend an urban middle school. The researcher wanted to remedy the problem of low writing achievement of eighth-grade students and determine if writing across the…

  12. Story Telling: Research and Action to Improve 6th Grade Students' Views about Certain Aspects of Nature of Science

    Science.gov (United States)

    Kahraman, Feray; Karatas, Faik Özgür

    2015-01-01

    This study is a four-week section of ongoing attempts that aim to improve 6th grade students' understandings of the nature of science. The study was carried out in a sixth grade science and technology class at a rural middle school with 15 students on the basis of action research methodology. During the study, four different stories based on the…

  13. Effects of the 5th and 7th Grade Enhanced Versions of the "keepin' it REAL" Substance Use Prevention Curriculum

    Science.gov (United States)

    Elek, Elvira; Wagstaff, David A.; Hecht, Michael L.

    2010-01-01

    This study assessed the outcomes of adapting the culturally-grounded, middle school, substance-use prevention intervention, "keepin' it REAL" ("kiR"), to target elementary school students and to address acculturation. At the beginning of 5th grade, 29 schools were randomly assigned to conditions obtained by crossing grade of implementation (5th,…

  14. TCGA_LowerGradeGliomas

    Science.gov (United States)

    TCGA researchers analyzed nearly 300 cases of diffuse low- and intermediate-grade gliomas, which together comprise lower-grade gliomas. LGGs occur mainly in adults and include astrocytomas, oligodendrogliomas and oligoastrocytomas.

  15. Transitions between subclasses of bullying and victimization when entering middle school.

    Science.gov (United States)

    Williford, Anne; Boulton, Aaron J; Jenson, Jeffrey M

    2014-01-01

    We examined the effects of depressive symptoms, antisocial attitudes, and perspective-taking empathy on patterns of bullying and victimization during the transition from late elementary (4th grade to 5th grade) to middle school (6th grade) among 1,077 students who participated in the Youth Matters (YM) bullying prevention trial. Latent transition analysis was used to establish classes of bullying, victimization, bully-victimization, and uninvolvement. The intervention had a positive impact on children as they moved from elementary to middle school. More students in the YM group transitioned from the involved statuses to the uninvolved status than students in the control group during the move to middle school. Elementary school bullies with higher levels of depressive symptoms were less likely than other students to move to an uninvolved status in the first year of middle school. Students who held greater antisocial attitudes were more likely to be a member of the bully-victim status than the uninvolved status during the move to middle school. Perspective-taking empathy, however, was not a significant predictor of status change during the transition to middle school. Implications for school-based prevention programs during the move to middle school are noted. © 2013 Wiley Periodicals, Inc.

  16. The Rise of Political Islam in Turkey

    Science.gov (United States)

    2008-01-01

    and 90 in France , selected and pre- pared by the Diyanet in conjunction with German and French authori- ties. (The preparation includes instruction...authors that if Gülen were to return, secularists would liken it to the return of the Ayatollah Khomeini from France in 1979. To prevent problems for the...including Denizli, Gaziantep, and Kahramanmaraş. The economic upswing created a new middle class— the so-called “Anatolian bourgeoisie ”—with strong roots

  17. The link between middle school mathematics course placement and achievement.

    Science.gov (United States)

    Domina, Thurston

    2014-01-01

    The proportion of eighth graders in United States public schools enrolled in algebra or a more advanced mathematics course doubled between 1990 and 2011. This article uses Early Childhood Longitudinal Study's Kindergarten Cohort data to consider the selection process into advanced middle school mathematics courses and estimate the effects of advanced courses on students' mathematics achievement (n = 6,425; mean age at eighth grade = 13.7). Eighth-grade algebra and geometry course placements are academically selective, but considerable between-school variation exists in students' odds of taking these advanced courses. While analyses indicate that advanced middle school mathematics courses boost student achievement, these effects are most pronounced in content areas closely related to class content and may be contingent on student academic readiness. © 2014 The Author. Child Development © 2014 Society for Research in Child Development, Inc.

  18. Being Left Behind Amidst Africa’s Rising Imagery: The Maasai In The World Of Information And Communication Technologies (ICTs

    Directory of Open Access Journals (Sweden)

    Eric E Otenyo

    2017-07-01

    Full Text Available Today the media is replete with stories about Africa rising and enjoying middle –income status. Those promoting the narrative of Africa rising include the World Bank and western –trained elites. The narrative of success assumes that prosperity trickles down to Indigenous communities, who are pictured consuming mobile phones and tablets. At the same time, Hollywood and western media outlets continue to present images of Indigenous Maasai as a cultural export to be consumed. With emphasis on social media narratives, this paper interrogates the continued marginalisation of the Maasai people amidst the myth of a rising Africa. In sum, the Africa rising myth and penetration of ICTs in rural areas masks the dispossession of Maasai means of livelihood, and therefore worsening the groups’ conditions of living.

  19. High and rising health care costs.

    Science.gov (United States)

    Ginsburg, Paul B

    2008-10-01

    The U.S. is spending a growing share of the GDP on health care, outpacing other industrialized countries. This synthesis examines why costs are higher in the U.S. and what is driving their growth. Key findings include: health care inefficiency, medical technology and health status (particularly obesity) are the primary drivers of rising U.S. health care costs. Health payer systems that reward inefficiencies and preempt competition have impeded productivity gains in the health care sector. The best evidence indicates medical technology accounts for one-half to two-thirds of spending growth. While medical malpractice insurance and defensive medicine contribute to health costs, they are not large enough factors to significantly contribute to a rise in spending. Research is consistent that demographics will not be a significant factor in driving spending despite the aging baby boomers.

  20. Compton suppression through rise-time analysis

    International Nuclear Information System (INIS)

    Selvi, S.; Celiktas, C.

    2007-01-01

    We studied Compton suppression for 60 Co and 137 Cs radioisotopes using a signal selection criterion based on contrasting the fall time of the signals composing the photo peak with those composing the Compton continuum. The fall time criterion is employed by using the pulse shape analysis observing the change in the fall times of the gamma-ray pulses. This change is determined by measuring the changes in the rise times related to the fall time of the scintillator and the timing signals related to the fall time of the input signals. We showed that Compton continuum suppression is achieved best via the precise timing adjustment of an analog rise-time analyzer connected to a NaI(Tl) scintillation spectrometer

  1. Middle Eastern power systems

    International Nuclear Information System (INIS)

    Anon.

    1992-01-01

    Middle Eastern Power systems have evolved independently of each other over many decades. The region covers a wide geographical area of over 4 million square kilometers with an estimated population in 1990 of over 120 million people. This paper discusses the present status and future power system developments in the Middle East with emphasis on the Mashrequ Arab Countries (MAC). MAC consists of Egypt, Iraq, Jordan, Lebanon, Syria, Yemen, and the six Gulf Cooperation Council (GCC) countries, namely, Bahrain, Kuwait, Qatar, Saudi Arabia, Oman, and the United Arab Emirates (UAE). Interconnections within MAC and possible extensions to Turkey, Europe, and Central Africa are discussed. A common characteristic of the MAC power systems is that they are all operated by government or semi-government bodies. The energy resources in the region are varied. Countries such as Iraq, Egypt, and Syria have significant hydro power resources. On the other hand, the GCC countries and Iraq have abundant fossil fuel reserves

  2. Middle Eastern solutions

    International Nuclear Information System (INIS)

    Boersma, M.

    2001-01-01

    The need to consider the Middle East as a group of distinct countries and not as one single market and to tailor the services offered by companies is stressed. The cultures, political and social conditions, forms of the oil and gas industry in the countries making up the Middle East and their technology requirements are different and vary widely. The approach taken by Shell Global Solutions to these differences is described and illustrated with Shell's experiences in Oman and Saudi Arabia. Shell has found that Omanis are keen to work in their oil and gas industry, and to protect their country's natural environment. Saudi also have intense pride in their oil industry and here Shell supports refinery operators reduce costs while maintaining strict quality control. Shell has been selected to help Saudi Arabia develop its natural gas reserves; as part of the Core Venture 3 project, Shell will build a power desalination plant

  3. Let's End the Grading Game.

    Science.gov (United States)

    Edwards, Clifford H.; Edwards, Laurie

    1999-01-01

    Argues that grades have negative effects on learning and self-concept. States that while grading has a long tradition of sorting children for college entrance, there is limited evidence that grades serve a valid purpose. Argues that this practice should be abolished and an evaluation system established that provides a more valid estimate of…

  4. Four Steps in Grading Reform

    Science.gov (United States)

    Guskey, Thomas R.; Jung, Lee Ann

    2012-01-01

    The field of education is moving rapidly toward a standards-based approach to grading. School leaders have become increasingly aware of the tremendous variation that exists in grading practices, even among teachers of the same courses in the same department in the same school. Consequently, students' grades often have little relation to their…

  5. The rise of precarious employment in Germany

    OpenAIRE

    Brady, David; Biegert, Thomas

    2017-01-01

    Long considered the classic coordinated market economy featuring employment security and relatively little employment precarity, the German labor market has undergone profound changes in recent decades. We assess the evidence for a rise in precarious employment in Germany from 1984 to 2013. Using data from the German Socio-Economic Panel (SOEP) through the Luxembourg Income Study, we examine low-wage employment, working poverty, and temporary employment. We also analyze changes in the demogra...

  6. Rising sea levels and small island states

    International Nuclear Information System (INIS)

    Leatherman, S.P.

    1994-01-01

    A review is given of the problems small island nations face with respect to sea level rise caused by global warming. Many small island nations are very vulnerable to sea level rise. Particularly at risk are coral reef atolls, which are generally quite small, lie within three metres of current sea levels, and have no land at higher elevations to relocate populations and economic activity. Volcanic islands in the Pacific have high ground, but it is largely rugged, high relief and soil-poor. The most vulnerable islands are those that consist entirely of atolls and reef islands, such as Kirabai, Maldives, Tokelau and Tuvalu. Small island states, which by themselves have little power or influence in world affairs, have banded together to form the Strategic Alliance of Small Island States (AOSIS). This alliance had grown to include 42 states by the time of the 1992 U.N. Earth Summit. Although the greenhouse effect is mainly caused by industrial nations, developing countries will suffer the most from it. Choices of response strategy will depend on environmental, economic and social factors. Most small island nations do not have the resources to fight sea level rise in the way that the Dutch have. Retreat can occur as a gradual process or as catastrophic abandonment. Prohibiting construction close to the water's edge is a good approach. Sea level histories for each island state should be compiled and updated, island geomorphology and settlement patterns should be surveyed to determine risk areas, storm regimes should be determined, and information on coastal impacts of sea level rise should be disseminated to the public

  7. Rugged calorimeter with a fast rise time

    International Nuclear Information System (INIS)

    McMurtry, W.M.; Dolce, S.R.

    1980-01-01

    An intrinsic 1-mil-thick gold foil calorimeter has been developed which rises to 95% of the energy deposited in less than 2 microseconds. This calorimeter is very rugged, and can withstand rough handling without damage. The time constant is long, in the millisecond range, because of its unique construction. Use of this calorimeter has produced 100% data recovery, and agreement with true deposition to less than 10%

  8. Peer Victimization and Internalizing Symptoms in Middle School Children

    OpenAIRE

    Grills, Amie E.

    2000-01-01

    The primary purpose of this investigation was to examine the relationships among peer victimization, global self-worth, social support, and internalizing behaviors (e.g., anxiety, social anxiety, and depression). Of particular interest were the potential mediating and moderating roles of global self-worth and social support in the anticipated relationships between peer victimization and internalizing symptoms. All sixth grade children from a public middle school completed self-report measur...

  9. Sensitivity to Verbally and Physically Harassing Behaviors and Reported Incidents in Junior High/Middle School Students.

    Science.gov (United States)

    Turner, Penelope B.

    This thesis investigates the sensitivity of junior high/middle school students to statements depicting verbal and physical sexual harassment. The independent variables that were investigated included gender, grade level, age, size of district, grades received, participation in sports, birth order, developmental level, and self-esteem. Students…

  10. Relationships of French and English Morphophonemic Orthographies to Word Reading, Spelling, and Reading Comprehension during Early and Middle Childhood

    Science.gov (United States)

    Abbott, Robert D.; Fayol, Michel; Zorman, Michel; Casalis, Séverine; Nagy, William; Berninger, Virginia W.

    2016-01-01

    Two longitudinal studies of word reading, spelling, and reading comprehension identified commonalities and differences in morphophonemic orthographies--French (Study 1, n = 1,313) or English (Study 2, n = 114) in early childhood (Grade 2)and middle childhood (Grade 5). For French and English, statistically significant concurrent relationships…

  11. On the Formation of Verb Compounds in Early Middle Japanese

    Directory of Open Access Journals (Sweden)

    Wenchao LI

    2013-12-01

    Full Text Available This paper is dedicated to the formation of verb compounds in Early Middle Japanese, a stage of the Japanese language used in the Heian Period (794–1185. The findings reveal that current verb compounds have come a long way from Old Japanese. Multiple verbs in Old Japanese are assigned to an associate type, rather than a compounding type of relation. Thus, the serial constituents receive equal syntactic weight, giving rise to the extensive use of the coordinate type and succession type of multi-verbs. In Early Middle Japanese, the combinations of the two constituents seem much tighter, giving rise the frequent use of the modifier-predicate V-V. The conclusion emerging from this study is that it was not until Early Middle Japanese that verb compounds in the strict sense appeared. Moreover, two types of verb weakening are observed in Early Middle Japanese: (a transformation of the first verb into a prefix, (b grammaticalization of the second verb into a directional/resultative complement.

  12. Origin of human motor readiness field linked to left middle frontal gyrus by MEG and PET

    DEFF Research Database (Denmark)

    Pedersen, Jane Rygaard; Johannsen, P; Bak, Christen Kjeldahl

    1998-01-01

    Combined magnetoencephalography and positron emission tomography identified a prior source of activity in the left middle frontal gyrus duping uncued movements of the right index finger Voluntary movements gave rise to a change in the cortical electrical potential known as the Bereitschaftspotent......Combined magnetoencephalography and positron emission tomography identified a prior source of activity in the left middle frontal gyrus duping uncued movements of the right index finger Voluntary movements gave rise to a change in the cortical electrical potential known...... sources subsequently to be active were mapped to the supplementary motor area, premotor cortex, and motor cortex (M1), all in the left hemisphere. (C) 1998 Academic Press....

  13. Beneficiation and leaching study of a muti-Au carrier and low grade refractory gold ore

    Science.gov (United States)

    Li, W. J.; Song, Y. S.; Chen, Y.; Cai, L. L.; Zhou, G. Y.

    2017-09-01

    Detailed mineralogy and beneficiation and leaching study of a muti-Au carrier, low grade refractory gold ore from a beneficiation plant in Henan Province, China, was investigated. Mineral liberation analysis, scanning electron microscopy, element phase analysis and etc. by a mineral liberation analyser were used for mineralogical characterization study of this ore. The present work describes an experimental study on the effect of traditional parameters (such as grinding fineness and reagent regimes), middling processing method and flowsheet construction on the total recovery and the assay of the floatation concentrate. Two-step floatation and part of middling combined to the floatation tailing for gold leaching process resulted in high gold grade (g.t-1) and gold recovery (%) for this refractory gold ore. This process opens the possibilities of maximizing Au grade and recoveries in a muti-Au carrier and low grade refractory gold ore where low recoveries are common.

  14. World medical schools: The sum also rises.

    Science.gov (United States)

    Rigby, Perry G; Gururaja, Ramnarayan P

    2017-06-01

    There is a worldwide shortage of doctors, which is true in most countries and on most continents. To enumerate the number of medical schools in the world at two different times, showing the trends and relating this to population is a beginning. The number is actually going up and has done so for some time; this has increased the supply of physicians and broadened healthcare delivery. The number to count for geographic and regional information about the medical schools relates directly to the supply of doctors. Regions were chosen from WHO and Foundation for the Advancement of International Medical Education and Research data to illustrate geographic distributions, physicians per patient and kinetics. The number of medical schools has consistently been rising around the world. However, world order is reverting to disorder, considering wars, disease and beleaguered stand-offs. None. Eight countries contain 40% of medical schools; however, several locations are rising faster than the rest. Some regions are stable, but sub-Saharan Africa, the Caribbean, South Asia and South America have increased the most in percentage recently, but not uniformly. Medical schools are related not only by geography, political boundaries and population but are concentrated in some regions. Graduate Medical Education positions appear to be short on a worldwide basis, as well as in some regions and countries. The number of medical schools is increasing worldwide and the identification of rapidly rising geographic areas is useful in exploring, planning and comparing regions. Controversy continues in a variety of locations, especially concerning Graduate Medical Education. In addition to funding, faculty candidates and accreditation, new schools are confronting a variety of choices in standards and quality, sizing and regional concerns.

  15. The economic consequences of rising oil prices

    International Nuclear Information System (INIS)

    Lescaroux, F.

    2006-05-01

    In the context of rising crude oil prices observed in the last five years, this paper attempts to shed light on the possible consequences of a costlier barrel. We shall begin with a brief presentation of the main results of the analyses conducted in the last 30 years, concerning the impact of energy prices on economic activity. We shall then interpret these analyses and their conclusions, and try to draw a number of lessons about the anticipated effects of the recent trend in energy prices. (author)

  16. Sea level rise in the Arctic Ocean

    OpenAIRE

    Proshutinsky, Andrey; Pavlov, Vladimir; Bourke, Robert H.

    2001-01-01

    The article of record as published may be found at http://dx.doi.org/10.1029/2000GL012760 About 60 tide-gauge stations in the Kara, Laptev, East-Siberian and Chukchi Seas have recorded the sea level change from the 1950s through 1990s. Over this 40-year period, most of these stations show a significant sea level rise (SLR). In light of global change, this SLR could be a manifestation of warming in the Artic coupled with a decrease of sea ice extent, warming of Atlantic waters, changes in...

  17. The rise and fall of the ridge

    Energy Technology Data Exchange (ETDEWEB)

    Sorensen, Paul [Brookhaven National Laboratory, Upton, NY 11973 (United States)

    2011-04-01

    Recent data from heavy ion collisions at RHIC show unexpectedly large near-angle correlations that broaden longitudinally with centrality. The amplitude of this ridge-like correlation rises rapidly with centrality, reaches a maximum, and then falls in the most central collisions. In this talk we explain how this behavior can be easily understood in a picture where final momentum-space correlations are driven by initial coordinate space density fluctuations. We propose {nu}{sub n}{sup 2}/{epsilon}{sub n,part}{sup 2} as a useful way to study these effects and explain what it tells us about the collision dynamics.

  18. Consumerism and wellness: rising tide, falling cost.

    Science.gov (United States)

    Domaszewicz, Alexander

    2008-01-01

    Annual employer-sponsored health plan cost increases have been slowing incrementally due to slowing health care utilization--a phenomenon very likely tied to the proliferation of health management activities, wellness programs and other consumerism strategies. This article describes the sharp rise in recent years of consumer-directed health plans (CDHPs) and explains what developments must happen for genuine consumer-directed health care to realize its full potential. These developments include gathering transparent health care information, increasing consumer demand for that information and creating truly intuitive data solutions that allow consumers to easily access information in order to make better health care decisions.

  19. Diagnostics from three rising submillimeter bursts

    International Nuclear Information System (INIS)

    Zhou, Ai-Hua; Li, Jian-Ping; Wang, Xin-Dong

    2016-01-01

    In this paper we investigate three novel rising submillimeter (THz) bursts that occurred sequentially in Super Active Region NOAA 10486. The average rising rate of the flux density above 200 GHz is only 20 sfu GHz −1 (corresponding to spectral index α of 1.6) for the THz spectral components of the 2003 October 28 and November 4 bursts, but it attained values of 235 sfu GHz −1 (α = 4.8) in the 2003 November 2 burst. The steeply rising THz spectrum can be produced by a population of highly relativistic electrons with a low-energy cutoff of 1 MeV, but it only requires a low-energy cutoff of 30 keV for the two slowly rising THz bursts, via gyrosynchrotron (GS) radiation based on our numerical simulations of burst spectra in the magnetic dipole field case. The electron density variation is much larger in the THz source than in the microwave (MW) source. It is interesting that the THz source radius decreased by 20%–50% during the decay phase for the three events, but the MW source increased by 28% for the 2003 November 2 event. In the paper we will present a formula that can be used to calculate the energy released by ultrarelativistic electrons, taking the relativistic correction into account for the first time. We find that the energy released by energetic electrons in the THz source exceeds that in the MW source due to the strong GS radiation loss in the THz range, although the modeled THz source area is 3–4 orders smaller than the modeled MW source one. The total energies released by energetic electrons via the GS radiation in radio sources are estimated, respectively, to be 5.2 × 10 33 , 3.9 × 10 33 and 3.7 × 10 32 erg for the October 28, November 2 and 4 bursts, which are 131, 76 and 4 times as large as the thermal energies of 2.9 × 10 31 , 2.1 × 10 31 and 5.2 × 10 31 erg estimated from soft X-ray GOES observations. (paper)

  20. Hydrodynamics in a swarm of rising bubbles

    International Nuclear Information System (INIS)

    Riboux, G.

    2007-04-01

    In many applications, bubbles are used to agitate a liquid in order to enhance mixing and transfer. This work is devoted to the study of the hydrodynamics in a stable bubble column. Experimentally, we have determined the properties of the velocity fluctuations inside and behind a homogeneous swarm of rising bubbles for different bubble sizes and gas volume fractions α: self-similarity in α 0,4 , spectrum in k -3 and integral length scale controlled by buoyancy. Numerically, we have reproduced these properties by means of large-scale simulations, the bubbles being modeled by volume-forces. This confirms that the dynamics is controlled by wake interactions. (author)

  1. The rising home birth trend in America

    OpenAIRE

    Nurlan Aliyev; Chastidy Roldan; Bulent Cakmak

    2015-01-01

    In recent years home birth rates are increased in the whole world, mainly in the United States (US). Between 2004-2012, non-hospital births increasing rate is 89% in the US. Home birth increased especially among the married, non-Hispanic, over 35 years of age, multipar and singleton pregnancies. However the high rate of cesarean birth did not increase in recent years in the US, now it has been stable at 32%. It is reported that the stability of the cesarean rate is related to rising rate of h...

  2. Nuclear costs: why do they keep rising?

    International Nuclear Information System (INIS)

    MacKerron, Gordon

    1992-01-01

    Nuclear power has performed badly in recent years as a new investment everywhere except Japan and Korea. This has mainly been for orthodox financial and economic reasons. Among the factors contributing to this loss of competitiveness, persistently rising real capital costs have been particularly important. While the nuclear industry has believed it could control and reduce capital costs, increasing regulatory stringency has made designs more complex and correspondingly more costly. These cost increasing factors have far outweighed traditional cost reducing factors (like learning). The only lasting way to meet increasing stringency in safety at acceptably low cost is likely to be the development of new and simpler reactor designs. (author)

  3. Low-rise shear wall failure modes

    International Nuclear Information System (INIS)

    Farrar, C.R.; Hashimoto, P.S.; Reed, J.W.

    1991-01-01

    A summary of the data that are available concerning the structural response of low-rise shear walls is presented. This data will be used to address two failure modes associated with the shear wall structures. First, data concerning the seismic capacity of the shear walls with emphasis on excessive deformations that can cause equipment failure are examined. Second, data concerning the dynamic properties of shear walls (stiffness and damping) that are necessary to compute the seismic inputs to attached equipment are summarized. This case addresses the failure of equipment when the structure remains functional. 23 refs

  4. Middle Helladic Period

    DEFF Research Database (Denmark)

    Sarri, Kalliopi

    1999-01-01

    and their quality was improved considerably toward the end of this period. The profound cultural innovations of the Middle Helladic period were initially interpreted as a result of violent population movement and troubles provoked by the coming of the first Indo-European races. However, this matter does no more...... Helladic period is considered as a period of economic and social decline it was the time during which the mainland features merged with the insular influence, that is all the Aegean elements which led to the creation of the Mycenaean civilization were mixed in a creative way....

  5. MIDDLE CLASS MOVEMENTS

    OpenAIRE

    Dr. K. Sravana Kumar

    2016-01-01

    The middle class is placed between labour and capital. It neither directly awns the means of production that pumps out the surplus generated by wage labour power, nor does it, by its own labour, produce the surplus which has use and exchange value. Broadly speaking, this class consists of the petty bourgeoisie and the white-collar workers. The former are either self-employed or involved in the distribution of commodities and the latter are non-manual office workers, supervisors and profession...

  6. Effects of music on assertive behavior during exercise by middle-school-age students.

    Science.gov (United States)

    Mills, B D

    1996-10-01

    The purpose of this study was to assess the association of a particular style of music and assertive behavior in middle-school-aged students during exercise. Participants were students enrolled in a public middle school (Grades 6, 7, and 8, N = 502). A statistically significant relationship was found between the number of assertive behaviors occurring while listening to fast tempo music and grades and between difference scores and grades. Difference scores were obtained by subtracting the number of assertive behaviors occurring while listening to fast tempo music from those while listening to slow tempo music. Discriminant function analysis showed the number of assertive behaviors when listening to fast tempo music and difference scores were predictive of membership by grade. The higher the more assertive behaviors were emitted when listening to fast tempo music.

  7. A middle Pleistocene through middle Miocene moraine sequence in the central Transantarctic Mountains, Antarctica

    Science.gov (United States)

    Balter, A.; Bromley, G. R.; Balco, G.; Thomas, H.; Jackson, M. S.

    2017-12-01

    Ice-free areas at high elevation in the central Transantarctic Mountains preserve extensive moraine sequences and drift deposits that comprise a geologic record of former East Antarctic Ice Sheet thickness and extent. We are applying cosmogenic-nuclide exposure dating to determine the ages of these moraine sequences at Roberts Massif and Otway Massif, at the heads of the Shackleton and Beardmore Glaciers, respectively. Moraines at these sites are for the most part openwork boulder belts characteristic of deposition by cold-based ice, which is consistent with present climate and glaciological conditions. To develop our chronology, we collected samples from 30 distinct ice-marginal landforms and have so far measured >100 3He, 10Be, and 21Ne exposure ages. Apparent exposure ages range from 1-14 Ma, which shows that these landforms record glacial events between the middle Pleistocene and middle Miocene. These data show that the thickness of the East Antarctic Ice Sheet in this region was similar to or thicker than present for long periods between the middle Miocene and today. The time range represented by these moraine sequences indicates that they may also provide direct geologic evidence for East Antarctic Ice Sheet behavior during past periods of warmer-than-present climate, specifically the Miocene and Pliocene. As the East Antarctic Ice Sheet is the largest ice sheet on earth, understanding its sensitivity to warm-climate conditions is critical for projections of ice sheet behavior and sea-level rise in future warm climates.

  8. Gas-rise velocities during kicks

    Energy Technology Data Exchange (ETDEWEB)

    White, D.B. (Sedco Forex (FR))

    1991-12-01

    This paper reports on experiments to examine gas migration rates in drilling muds that were performed in a 15-m-long, 200-mm-ID inclinable flow loop where air injection simulates gas entry during a kick. These tests were conducted using a xanthum gum (a common polymer used in drilling fluids) solution to simulate drilling muds as the liquid phase and air as the gas phase. This work represents a significant extension of existing correlations for gas/liquid flows in large pipe diameters with non- Newtonian fluids. Bubbles rise faster in drilling muds than in water despite the increased viscosity. This surprising result is caused by the change in the flow regime, with large slug-type bubbles forming at lower void fractions. The gas velocity is independent of void fraction, thus simplifying flow modeling. Results show that a gas influx will rise faster in a well than previously believed. This has major implications for kick simulation, with gas arriving at the surface earlier than would be expected and the gas outflow rate being higher than would have been predicted. A model of the two-phase gas flow in drilling mud, including the results of this work, has been incorporated into the joint Schlumberger Cambridge Research (SCR)/BP Intl. kick model.

  9. Rising synchrony controls western North American ecosystems

    Science.gov (United States)

    Black, Bryan A.; van der Sleen, Peter; Di Lorenzo, Emanuele; Griffin, Daniel; Sydeman, William J.; Dunham, Jason B.; Rykaczewski, Ryan R.; Garcia-Reyes, Marisol; Safeeq, Mohammad; Arismendi, Ivan; Bograd, Steven J.

    2018-01-01

    Along the western margin of North America, the winter expression of the North Pacific High (NPH) strongly influences interannual variability in coastal upwelling, storm track position, precipitation, and river discharge. Coherence among these factors induces covariance among physical and biological processes across adjacent marine and terrestrial ecosystems. Here, we show that over the past century the degree and spatial extent of this covariance (synchrony) has substantially increased, and is coincident with rising variance in the winter NPH. Furthermore, centuries‐long blue oak (Quercus douglasii) growth chronologies sensitive to the winter NPH provide robust evidence that modern levels of synchrony are among the highest observed in the context of the last 250 years. These trends may ultimately be linked to changing impacts of the El Niño Southern Oscillation on mid‐latitude ecosystems of North America. Such a rise in synchrony may destabilize ecosystems, expose populations to higher risks of extinction, and is thus a concern given the broad biological relevance of winter climate to biological systems.

  10. Rising incidence of Merkel cell carcinoma

    DEFF Research Database (Denmark)

    Lyhne, Dorte; Lock-Andersen, Jørgen; Dahlstrøm, Karin

    2011-01-01

    Abstract Merkel cell carcinoma (MCC) is a rare, aggressive, skin cancer of obscure histogenesis, the incidence of which is rising. There is no consensus on the optimal treatment. Our aim was to evaluate the staging, investigation, treatment, and follow-up of MCC in eastern Denmark, and to investi......Abstract Merkel cell carcinoma (MCC) is a rare, aggressive, skin cancer of obscure histogenesis, the incidence of which is rising. There is no consensus on the optimal treatment. Our aim was to evaluate the staging, investigation, treatment, and follow-up of MCC in eastern Denmark......, and to investigate the incidence. We suggest guidelines for treatment. First we reviewed the medical records of 51 patients diagnosed with MCC from 1995 until 2006 in eastern Denmark. The nation-wide incidence of MCC was extracted from the Danish Cancer Registry for the calculations for the period 1986-2003. We...... reviwed published papers about MCC based on a MEDLINE search. Fourteen of the 51 patients developed recurrence, and 37 (73%) died during the study period. Mean follow-up was 13 months (range 1-122). A total of 153 patients were identified in the Danish Cancer Registry, and showed that incidence rates had...

  11. Colliding Epidemics and the Rise of Cryptococcosis

    Directory of Open Access Journals (Sweden)

    Christina C. Chang

    2015-12-01

    Full Text Available Discovered more than 100 years ago as a human pathogen, the Cryptococcus neoformans–Cryptococcus gattii (C. neoformans–C. gattii complex has seen a large global resurgence in its association with clinical disease in the last 30 years. First isolated in fermenting peach juice, and identified as a human pathogen in 1894 in a patient with bone lesions, this environmental pathogen has now found niches in soil, trees, birds, and domestic pets. Cryptococcosis is well recognized as an opportunistic infection and was first noted to be associated with reticuloendothelial cancers in the 1950s. Since then, advances in transplant immunology, medical science and surgical techniques have led to increasing numbers of solid organ transplantations (SOT and hematological stem cell transplantations being performed, and the use of biological immunotherapeutics in increasingly high-risk and older individuals, have contributed to the further rise in cryptococcosis. Globally, however, the major driver for revivification of cryptococcosis is undoubtedly the HIV epidemic, particularly in Sub-Saharan Africa where access to care and antiretroviral therapy remains limited and advanced immunodeficiency, poverty and malnutrition remains the norm. As a zoonotic disease, environmental outbreaks of both human and animal cryptococcosis have been reported, possibly driven by climate change. This is best exemplified by the resurgence of C. gattii infection in Vancouver Island, Canada, and the Pacific Northwest of the United States since 1999. Here we describe how the colliding epidemics of HIV, transplantation and immunologics, climate change and migration have contributed to the rise of cryptococcosis.

  12. Modeling the Middle Jurassic ocean circulation

    Directory of Open Access Journals (Sweden)

    Maura Brunetti

    2015-10-01

    Full Text Available We present coupled ocean–sea-ice simulations of the Middle Jurassic (∼165 Ma when Laurasia and Gondwana began drifting apart and gave rise to the formation of the Atlantic Ocean. Since the opening of the Proto-Caribbean is not well constrained by geological records, configurations with and without an open connection between the Proto-Caribbean and Panthalassa are examined. We use a sea-floor bathymetry obtained by a recently developed three-dimensional (3D elevation model which compiles geological, palaeogeographical and geophysical data. Our original approach consists in coupling this elevation model, which is based on detailed reconstructions of oceanic realms, with a dynamical ocean circulation model. We find that the Middle Jurassic bathymetry of the Central Atlantic and Proto-Caribbean seaway only allows for a weak current of the order of 2 Sv in the upper 1000 m even if the system is open to the west. The effect of closing the western boundary of the Proto-Caribbean is to increase the transport related to barotropic gyres in the southern hemisphere and to change water properties, such as salinity, in the Neo-Tethys. Weak upwelling rates are found in the nascent Atlantic Ocean in the presence of this superficial current and we discuss their compatibility with deep-sea sedimentological records in this region.

  13. Functionally Graded Materials Database

    Science.gov (United States)

    Kisara, Katsuto; Konno, Tomomi; Niino, Masayuki

    2008-02-01

    Functionally Graded Materials Database (hereinafter referred to as FGMs Database) was open to the society via Internet in October 2002, and since then it has been managed by the Japan Aerospace Exploration Agency (JAXA). As of October 2006, the database includes 1,703 research information entries with 2,429 researchers data, 509 institution data and so on. Reading materials such as "Applicability of FGMs Technology to Space Plane" and "FGMs Application to Space Solar Power System (SSPS)" were prepared in FY 2004 and 2005, respectively. The English version of "FGMs Application to Space Solar Power System (SSPS)" is now under preparation. This present paper explains the FGMs Database, describing the research information data, the sitemap and how to use it. From the access analysis, user access results and users' interests are discussed.

  14. The Implications of Grade Inflation

    DEFF Research Database (Denmark)

    Smith, David E.; Fleisher, Steven

    2011-01-01

    The authors review current and past practices of the grade inflation controversy and present ways to return to each institution’s established grading guidelines. Students are graded based on knowledge gathered. Certain faculty members use thorough evaluative methods, such as written and oral pres...... have been profiled in the news. The model is provided to ensure that degree candidates are academic experts in their field, having earned the credential through rigorous study....

  15. Fellows in the Middle: Fabulous Field Trips

    Science.gov (United States)

    West, Mary Lou

    2008-05-01

    Montclair State University's NSF GK-12 Program focuses on grades 7 and 8 in five urban public school districts in northern New Jersey. Each year four fieldtrips are taken by the students, middle school teachers, and graduate student Fellows. Many interdisciplinary hands-on lessons are written for use before, during and after each trip with this year's theme of Earth history. The Sterling Hill Mine trip evoked lessons on geology, economics, crystal structure, density, and pH. A virtual trip (webcam link) to scientists in the rainforest of Panama prompted critical thinking, categorizing layers and animals, and construction of model food webs. In the field trip to the NJ School of Conservation the students will build model aquifers, measure tree heights, and measure stream flow to compare to their Hackensack River. Finally the students will travel to MSU for a Math/Science Day with research talks, lab tours, hands-on activities, and a poster session. In January 2008 seventeen teachers, Fellows, and grant personnel took a field trip to China to set up collaborations with researchers and schools in Beijing and Xi'an, including the Beijing Ancient Observatory. All field trips are fabulous! Next year (IYA) our theme will be planetary science and will feature field trips to the Newark Museum's Dreyfuss Planetarium, BCC Buehler Challenger & Science Center, and star parties. We look forward to invigorating middle school science and mathematics with exciting astronomy. Funded by NSF #0638708

  16. Soil Structure Interaction Effect on High Rise and Low Rise Buildings

    OpenAIRE

    Divya Pathak; PAresh H. SHAH

    2000-01-01

    Effect of supporting soil on the response of structure has been analyzed in the present study. A low rise (G+ 5 storey) and a high rise (G+12 storey) building has been taken for the analysis. For both type of buildings, the response of building with and without consideration of soil structure interaction effect has been compared.Without interaction case is the case in which ends of the structure are assumed to be fixed while in interaction case, structure is assumed to be...

  17. [Vulnerability assessment on the coastal wetlands in the Yangtze Estuary under sea-level rise].

    Science.gov (United States)

    Cui, Li-Fang; Wang, Ning; Ge, Zhen-Ming; Zhang, Li-Quan

    2014-02-01

    To study the response of coastal wetlands to climate change, assess the impacts of climate change on the coastal wetlands and formulate feasible and practical mitigation strategies are the important prerequisite for securing coastal ecosystems. In this paper, the possible impacts of sea level rise caused by climate change on the coastal wetlands in the Yangtze Estuary were analyzed by the Source-Pathway-Receptor-Consequence (SPRC) model and IPCC definition on the vulnerability. An indicator system for vulnerability assessment was established, in which sea-level rise rate, subsidence rate, habitat elevation, inundation threshold of habitat and sedimentation rate were selected as the key indicators. A quantitatively spatial assessment method based on the GIS platform was established by quantifying each indicator, calculating the vulnerability index and grading the vulnerability index for the assessment of coastal wetlands in the Yangtze Estuary under the scenarios of sea-level rise. The vulnerability assessments on the coastal wetlands in the Yangtze Estuary in 2030 and 2050 were performed under two sea-level rise scenarios (the present sea-level rise trend over recent 30 years and IPCC A1F1 scenario). The results showed that with the projection in 2030 under the present trend of sea-level rise (0.26 cm x a(-1)), 6.6% and 0.1% of the coastal wetlands were in the low and moderate vulnerabilities, respectively; and in 2050, 9.8% and 0.2% of the coastal wetlands were in low and moderate vulnerabilities, respectively. With the projection in 2030 under the A1F1 scenario (0.59 cm x a(-1)), 9.0% and 0.1% of the coastal wetlands were in the low and moderate vulnerabilities, respectively; and in 2050, 9.5%, 1.0% and 0.3% of the coastal wetlands were in the low, moderate and high vulnerabilities, respectively.

  18. Models for the rise of the dinosaurs.

    Science.gov (United States)

    Benton, Michael J; Forth, Jonathan; Langer, Max C

    2014-01-20

    Dinosaurs arose in the early Triassic in the aftermath of the greatest mass extinction ever and became hugely successful in the Mesozoic. Their initial diversification is a classic example of a large-scale macroevolutionary change. Diversifications at such deep-time scales can now be dissected, modelled and tested. New fossils suggest that dinosaurs originated early in the Middle Triassic, during the recovery of life from the devastating Permo-Triassic mass extinction. Improvements in stratigraphic dating and a new suite of morphometric and comparative evolutionary numerical methods now allow a forensic dissection of one of the greatest turnovers in the history of life. Such studies mark a move from the narrative to the analytical in macroevolutionary research, and they allow us to begin to answer the proposal of George Gaylord Simpson, to explore adaptive radiations using numerical methods. Copyright © 2014 The Authors. Published by Elsevier Inc. All rights reserved.

  19. FIRE EVACUATION FROM HIGH-RISE BUILDINGS

    Directory of Open Access Journals (Sweden)

    Korol'chenko Aleksandr Yakovlevich

    2012-10-01

    Full Text Available The authors argue that no collapse of structures is likely in the event of a fire emergency in multistoried buildings, rather, other fire-related factors may endanger the lives of people inside high-rise buildings exposed to the fire emergency, including open fire, sparks, high ambient temperature, smoke and toxic combustion products, reduced concentration of oxygen, and combined influence of various factors. In case of fire, the temperature inside buildings reaches 1100 °С. It exceeds the temperature of the ambient air acceptable for humans by far (70 °С. The experiments demonstrate that combustion products contain hundreds of toxic chemical compounds. The most hazardous of them include carbon oxide, carbon dioxide, chloride and cyanic hydrogen, aldehydes and acrolein. The author provides the pattern of their influence on the human body. The smoke consists of unburned particles of carbon and aerosols. The size of particles fluctuates within 0.05-50 MMK. Smoke produces a physiological and psychological impact on human beings. It has been proven that dangerous fire factors emerge within the first five to ten minutes of the emergency situation. Evacuation is the principal method of safety assurance. However, the velocity of propagation of smoke and heat is so high that even if the fire prevention system is in operation, people may be blocked both on the floors that are exposed to the fire and those that escape its propagation. New evacuation and rescue methods are recommended by the author. Various ways and methods of use of life-saving facilities are also provided. Safe evacuation is feasible from buildings where the number of stories does not exceed 10- 12. During evacuation, high density human streams are formed inside buildings, therefore, the period of stay in a burning building is increased. The calculations have proven that a two-minute delay of evacuation converts into a safe evacuation of only 13-15% of people. Low reliability of

  20. Exploring the unprecedented rise in Danish burglary

    DEFF Research Database (Denmark)

    Sorensen, David W.M.

    2012-01-01

    burglary increased so dramatically. This paper explores four sets of possible explanations for the increase, namely: Changes in public reporting, police recording and insurance practices; changes in population age, drug use and economic recession; increasing crime tourism; and impediments policing caused...... by the National Police Reform of 2007. While some or all of these factors may have contributed to the overall rise, none of them come close to explaining it on their own. This absence of evidence is especially interesting in light of widespread assumptions in the media and among some police about foreign burglary......-year period 2005-2010, plus data on long term crime trends (1990-2010) and other social indicators....

  1. AHP 21: Review: The Sun Rises

    Directory of Open Access Journals (Sweden)

    Mark Bender

    2012-12-01

    Full Text Available The Sun Rises is a model study contextualizing an oral narrative tradition in the social and ritual fabric of a remote community in northeast India. In many ways a companion volume to Himalayan Tribal Tales (Blackburn 2008, the text presents the first substantial translation of a key ritual text of the Apantani Valley dwellers in Arunachal Pradesh, located on the contested border between China (Tibet and India. The Apatani speak a Tibeto-Burman language, practice intensive rice agriculture in carefully terraced fields, and number about 35,000. Their clans populate several centuries-old villages. Until recently, they were separated from the lowlands of Assam and surrounded only by peoples practicing various forms of shifting agriculture. The valley dwellers have increasingly encountered modernization over the last few decades, including Indian and global popular culture, and Christianity. ...

  2. Understanding the Rise of African Business

    DEFF Research Database (Denmark)

    Jorem, Kaja Tvedten; Jeppesen, Søren; Hansen, Michael W.

    of African firm strategy and performance that takes into account the specificities of the African business environment and African firm capabilities. The paper starts by juxtaposing the widespread pessimistic view of African business with more recent, optimistic studies on African firms’ performance....... The latter suggests that profound improvements in African business performance are indeed under way: with the private sector playing a more important role as an engine of growth, with the rise of a capable African entrepreneurial class, and with the emergence of dynamic and competitive African enterprises...... in the literature, the authors suggest an analytical framework for understanding African business performance, underlining the interplay between contextual specificities, firm capabilities, and firm strategy....

  3. Analysis of Sea Level Rise in Action

    Science.gov (United States)

    Gill, K. M.; Huang, T.; Quach, N. T.; Boening, C.

    2016-12-01

    NASA's Sea Level Change Portal provides scientists and the general public with "one-stop" source for current sea level change information and data. Sea Level Rise research is a multidisciplinary research and in order to understand its causes, scientists must be able to access different measurements and to be able to compare them. The portal includes an interactive tool, called the Data Analysis Tool (DAT), for accessing, visualizing, and analyzing observations and models relevant to the study of Sea Level Rise. Using NEXUS, an open source, big data analytic technology developed at the Jet Propulsion Laboratory, the DAT is able provide user on-the-fly data analysis on all relevant parameters. DAT is composed of three major components: A dedicated instance of OnEarth (a WMTS service), NEXUS deep data analytic platform, and the JPL Common Mapping Client (CMC) for web browser based user interface (UI). Utilizing the global imagery, a user is capable of browsing the data in a visual manner and isolate areas of interest for further study. The interfaces "Analysis" tool provides tools for area or point selection, single and/or comparative dataset selection, and a range of options, algorithms, and plotting. This analysis component utilizes the Nexus cloud computing platform to provide on-demand processing of the data within the user-selected parameters and immediate display of the results. A RESTful web API is exposed for users comfortable with other interfaces and who may want to take advantage of the cloud computing capabilities. This talk discuss how DAT enables on-the-fly sea level research. The talk will introduce the DAT with an end-to-end tour of the tool with exploration and animating of available imagery, a demonstration of comparative analysis and plotting, and how to share and export data along with images for use in publications/presentations. The session will cover what kind of data is available, what kind of analysis is possible, and what are the outputs.

  4. Middle East gas

    International Nuclear Information System (INIS)

    Thomas, V.

    2001-01-01

    Despite the significant contribution of the Middle East countries of Bahrain, Iran, Iraq, Kuwait, Qatar, Saudi Arabia and the United Arab Emirates in the Arabia Gulf to the world's oil output, they are placing increasing emphasis on natural gas as a source of exports and to fuel domestic economic growth. The region accounts for 35% of the world's proven gas resource base, with Iran and Qatar holding major reserves. The region is becoming increasingly important in global liquefied natural gas (LNG) trade and details of key LNG projects and the major players in this area are given; a key advantage is the region's position between the two main markets - the Asia Pacific and the Atlantic Basin. Brief details are also given of gas pipeline projects and gas-to-liquid (GTL) projects in the region

  5. Duplicated middle cerebral artery

    Science.gov (United States)

    Perez, Jesus; Machado, Calixto; Scherle, Claudio; Hierro, Daniel

    2009-01-01

    Duplicated middle cerebral artery (DMCA) is an anomalous vessel arising from the internal carotid artery. The incidence DMCA is relatively law, and an association between this anomaly and cerebral aneurysms has been documented. There is a controversy whether DMCA may have perforating arteries. This is an important fact to consider in aneurysm surgery. We report the case of a 34-year-old black woman who suffered a subarachnoid hemorrhage and the angiography a left DMCA, and an aneurysm in an inferior branch of the main MCA. The DMCA and the MCA had perforating arteries. The aneurysm was clipped without complications. The observation of perforating arteries in our patient confirms that the DMCA may have perforating arteries. This is very important to be considered in cerebral aneurysms surgery. Moreover, the DMCA may potentially serve as a collateral blood supply to the MCA territory in cases of MCA occlusion. PMID:22140405

  6. Grade inflation at a north american college of veterinary medicine: 1985-2006.

    Science.gov (United States)

    Rush, Bonnie R; Elmore, Ronnie G; Sanderson, Michael W

    2009-01-01

    Grade inflation, an upward shift in student grade-point averages without a similar rise in achievement, is considered pervasive by most experts in post-secondary education in the United States. Grade-point averages (GPAs) at US universities have increased by roughly 0.15 points per decade since the 1960s, with a 0.6-point increase since 1967. In medical education, grade inflation has been documented and is particularly evident in the clinical setting. The purpose of this study was to evaluate grade inflation over a 22-year period in a college of veterinary medicine. Academic records from 2,060 students who graduated from the College of Veterinary Medicine at Kansas State University between 1985 and 2006 were evaluated, including cumulative GPAs earned during pre-clinical professional coursework, during clinical rotations, and at graduation. Grade inflation was documented at a rate of approximately 0.2 points per decade at this college of veterinary medicine. The difference in mean final GPA between the minimum (1986) and maximum (2003) years of graduation was 0.47 points. Grade inflation was similar for didactic coursework (years 1-3) and clinical rotations (final year). Demographic shifts, student qualifications, and tuition do not appear to have contributed to grade inflation over time. A change in academic standards and student evaluation of teaching may have contributed to relaxed grading standards, and technology in the classroom may have led to higher (earned) grades as a result of improved student learning.

  7. Rising workload or rising work pressure in general practice in the Netherlands.

    NARCIS (Netherlands)

    Bakker, D.H. de; Hutten, J.B.F.; Steultjens, M.; Schellevis, F.

    2002-01-01

    Background: General practice in the Netherlands seems to be in a crisis. Worries about shortages of GP's, the first strike of general practitioners in 2001 and the rapid increase of triage systems in out of hours care are signs that work pressure and/or workload are rising. But systematic evidence

  8. Practicing Good Habits, Grade 4.

    Science.gov (United States)

    Van Cong Lau; And Others

    This illustrated textbook was designed for teaching civics and values to fourth grade students in Vietnam. It is divided into six chapters: (1) At School (recapitulation of the grade three program, friendship, respect for the teacher, team work, discipline, honor); (2) In the Street: Traffic Regulations; (3) At Home (the extended family spirit,…

  9. Graded geometry and Poisson reduction

    OpenAIRE

    Cattaneo, A S; Zambon, M

    2009-01-01

    The main result of [2] extends the Marsden-Ratiu reduction theorem [4] in Poisson geometry, and is proven by means of graded geometry. In this note we provide the background material about graded geometry necessary for the proof in [2]. Further, we provide an alternative algebraic proof for the main result. ©2009 American Institute of Physics

  10. Compositionally Graded Multilayer Ceramic Capacitors.

    Science.gov (United States)

    Song, Hyun-Cheol; Zhou, Jie E; Maurya, Deepam; Yan, Yongke; Wang, Yu U; Priya, Shashank

    2017-09-27

    Multilayer ceramic capacitors (MLCC) are widely used in consumer electronics. Here, we provide a transformative method for achieving high dielectric response and tunability over a wide temperature range through design of compositionally graded multilayer (CGML) architecture. Compositionally graded MLCCs were found to exhibit enhanced dielectric tunability (70%) along with small dielectric losses (filters and power converters.

  11. Strong states in a troubled region: anatomies of a Middle Eastern regional conflict formation

    NARCIS (Netherlands)

    Leenders, R.; Harpviken, K.B.

    2010-01-01

    This article calls for closer attention to the Middle East in the wider debate on the purported rise of new modes of armed conflict following the end of the Cold War, particularly in relation to the notion of ‘regional conflict formations’ (RCFs). In so doing, it presents and analyses three main

  12. Postgraduate Education in Radiation Oncology in Low- and Middle-income Countries

    DEFF Research Database (Denmark)

    Eriksen, J. G.

    2017-01-01

    Radiation therapy is one of the most cost-effective ways to treat cancer patients on both a curative and palliative basis in low- and middle-income countries (LMICs). Despite this, the gap in radiation oncology capacity is enormous and is even increasing due to a rapid rise in the incidence...

  13. Volcanology of the Alarcon Rise, Gulf of California

    Science.gov (United States)

    Portner, R. A.; Clague, D. A.; Dreyer, B. M.; Martin, J. F.; Paduan, J. B.

    2012-12-01

    The Alarcon Rise is a ~50 km long intermediate-rate (~50mm/a) spreading center at the southern end of the Gulf of California. In Spring 2012, an MBARI-led expedition to Alarcon Rise mapped a ~1.5- 3km wide swath of the ridge axis at 1-m resolution and completed 9 dives with the ROV Doc Ricketts (Clague et al., this session). Pillow, lobate, and sheet flows occur along the entire axis. An inflated zone of the axis south of the midpoint along the Rise is dominated by a large sheet/lobate flow that erupted from en echelon fissures that extends for 8 km. This flow extends laterally away from the fissures for at least 2 km and covered nearly all prior flows and pillow mounds in its path. The middle of the segment contains a 1km across flat-topped volcano, virtually unmodified by fissures and faults, which dissect a 2.5 km across shield 5 km to the north. The NE and SW parts of the axis are characterized by more abundant pillow mounds and less voluminous sheet flows. Many of the pillow mounds, especially those in the northern third of the axis are small, steep sided mounds. Examination of sand and slit sized fractions of the basal cm of 87 cores collected by the ROV shows that basaltic pyroclasts with fluidal or bubble-wall (limu o Pele) morphologies are ubiquitous along the entire ridge. A rugged dome-like structure about 0.5x1.2kmx75m tall occurs about 9 km from the northern end of the ridge axis. Its crest is at a depth of 2330 m. Linear ridge-parallel faults and ridges cross-cut or terminate into the dome. These ridges extend several km both NE and SW along strike from the dome. Extensive sampling during two ROV dives shows that the entire dome is constructed of coarse blocky breccia and minor lineated flows of rhyolite. Dacite, andesite, and basaltic andesite flows occur on adjacent slopes to the north, south and west, and exhibit medium- to large-diameter pillow morphologies. Many of these flows and the flanks of the dome are mantled by abundant coarse- to fine

  14. Rhinoplasty in Middle Eastern Patients.

    Science.gov (United States)

    Sajjadian, Ali

    2016-01-01

    Rhinoplasty in patients of Middle Eastern origin requires complete understanding of nasal morphology and an individualized approach to create a racially congruent and aesthetically pleasing outcome. In this article, common anatomic features and characteristics and detailed steps, surgical techniques, and operative maneuvers that can lead to predictable outcome in rhinoplasty of Middle Eastern patients are discussed. Copyright © 2016 Elsevier Inc. All rights reserved.

  15. Are Middle Schools More Effective

    Science.gov (United States)

    Bedard, Kelly; Do, Chan

    2005-01-01

    While nearly half of all school districts have adopted middle schools, there is little quantitative evidence of the efficacy of this educational structure. We estimate the impact of moving from a junior high school system, where students stay in elementary school longer, to a middle school system for on-time high school completion. This is a…

  16. Bibliography of Research Support for K-8th Grade Inclusive Education

    Science.gov (United States)

    National Center on Schoolwide Inclusive School Reform: The SWIFT Center, 2014

    2014-01-01

    Presented here are references to books, chapters, and peer-reviewed journal articles that provide evidence for improved student outcomes through inclusive education in elementary and middle schools (K-8th grades). Not included here are the broad evidence bases for each feature in the SWIFT framework.

  17. The Effects of Issue Investigation and Action Training on Eighth-Grade Students' Environmental Behavior.

    Science.gov (United States)

    Ramsey, John M.

    1993-01-01

    Reports the instructional effects of a formal environmental education methodology, issue investigation and action training (IIAT), on eighth-grade students. Focuses on whether IIAT can improve responsible environmental behavior in middle school students and whether variables associated with responsible adult environmental behavior will be…

  18. Patterns of Vaginal, Oral, and Anal Sexual Intercourse in an Urban Seventh-Grade Population

    Science.gov (United States)

    Markham, Christine M.; Peskin, Melissa Fleschler; Addy, Robert C.; Baumler, Elizabeth R.; Tortolero, Susan R.

    2009-01-01

    Background: This study examines the prevalence of vaginal, oral, and anal intercourse among a population of urban, public middle school students, the characteristics of early sexual initiators, and the sequence of sexual initiation. Such data are limited for early adolescents. Methods: A total of 1279 seventh-grade students (57.3% female, 43.6%…

  19. Effects of Classwide Peer Tutoring on the Performance of Sixth Grade Students during a Volleyball Unit

    Science.gov (United States)

    Ayvazo, Shiri; Ward, Phillip

    2009-01-01

    This investigation examined the effects of Classwide Peer Tutoring (CWPT), a variation of peer tutoring on the volleyball skills of four 6th grade middle school students purposefully selected from an intact class of 21 students. Participants were average to low skilled males and females. A single subject A-B-A-B withdrawal design was used to…

  20. Hypermedia-Based Problem Based Learning in the Upper Elementary Grades: A Developmental Study.

    Science.gov (United States)

    Brinkerhoff, Jonathan D.; Glazewski, Krista

    This paper describes the application of problem-based learning (PBL) design principles and the inclusion of teacher and study scaffolds to the design and implementation of a hypermedia-based learning unit for the upper elementary/middle school grades. The study examined the following research questions: (1) Does hypermedia-based PBL represent an…

  1. Rising cyclin-CDK levels order cell cycle events.

    Directory of Open Access Journals (Sweden)

    Catherine Oikonomou

    Full Text Available Diverse mitotic events can be triggered in the correct order and time by a single cyclin-CDK. A single regulator could confer order and timing on multiple events if later events require higher cyclin-CDK than earlier events, so that gradually rising cyclin-CDK levels can sequentially trigger responsive events: the "quantitative model" of ordering.This 'quantitative model' makes predictions for the effect of locking cyclin at fixed levels for a protracted period: at low cyclin levels, early events should occur rapidly, while late events should be slow, defective, or highly variable (depending on threshold mechanism. We titrated the budding yeast mitotic cyclin Clb2 within its endogenous expression range to a stable, fixed level and measured time to occurrence of three mitotic events: growth depolarization, spindle formation, and spindle elongation, as a function of fixed Clb2 level. These events require increasingly more Clb2 according to their normal order of occurrence. Events occur efficiently and with low variability at fixed Clb2 levels similar to those observed when the events normally occur. A second prediction of the model is that increasing the rate of cyclin accumulation should globally advance timing of all events. Moderate (<2-fold overexpression of Clb2 accelerates all events of mitosis, resulting in consistently rapid sequential cell cycles. However, this moderate overexpression also causes a significant frequency of premature mitoses leading to inviability, suggesting that Clb2 expression level is optimized to balance the fitness costs of variability and catastrophe.We conclude that mitotic events are regulated by discrete cyclin-CDK thresholds. These thresholds are sequentially triggered as cyclin increases, yielding reliable order and timing. In many biological processes a graded input must be translated into discrete outputs. In such systems, expression of the central regulator is likely to be tuned to an optimum level, as we

  2. Can salt marshes survive sea level rise ?

    Science.gov (United States)

    Tambroni, N.; Seminara, G.

    2008-12-01

    Stability of salt marshes is a very delicate issue depending on the subtle interplay among hydrodynamics, morphodynamics and ecology. In fact, the elevation of the marsh platform depends essentially on three effects: i) the production of soil associated with sediments resuspended by tidal currents and wind waves in the adjacent tidal flats, advected to the marsh and settling therein; ii) production of organic sediments by the salt marsh vegetation; iii) soil 'loss' driven by sea level rise and subsidence. In order to gain insight into the mechanics of the process, we consider a schematic configuration consisting of a salt marsh located at the landward end of a tidal channel connected at the upstream end with a tidal sea, under different scenarios of sea level rise. We extend the simple 1D model for the morphodynamic evolution of a tidal channel formulated by Lanzoni and Seminara (2002, Journal of Geophysical Research-Oceans, 107, C1) allowing for sediment resuspension in the channel and vegetation growth in the marsh using the depth dependent model of biomass productivity of Spartina proposed by Morris et al. (2002, Ecology, 83, pp. 2869 - 2877). We first focus on the case of a tide dominated salt marsh neglecting wind driven sediment resuspension in the shoal. Results show that the production of biomass plays a crucial role on salt marsh stability and, provided productivity is high enough, it may turn out to be sufficient to counteract the effects of sea level rise even in the absence of significant supply of mineral sediments. The additional effect of wind resuspension is then introduced. Note that the wind action is twofold: on one hand, it generates wind waves the amplitude of which is strongly dependent on shoal depth and wind fetch; on the other hand, it generates currents driven by the surface setup induced by the shear stress acting on the free surface. Here, each contribution is analysed separately. Results show that the values of bottom stress induced by

  3. Characteristics of functional tension of qualified skiers when passing rises of different difficulty

    Directory of Open Access Journals (Sweden)

    J.K. Khmelnytska

    2015-10-01

    Full Text Available Purpose: studying of main functional changes in organism of qualified female skiers when passing rises of different difficulty. Materials: 12 female skiers of combined team of Ukraine of 21-34 years’ age were tested. Pedagogic observation included: speed metering (system of GPS- navigation, pulse metering (telemetric register of heart beats rate Polar RS800. In process of ski track passing we registered content of exhaled air (radio-telemetric gas-analytic complex MetaMax 3B, Cortex. Sportswomen fulfilled control passing of competition 6 km distance (2 circles, 3 km each in classic style on ski rollers. Ski track was determined by coach. In the course of track’s passing we registered indicators of speed and track profile with discreteness 1 sec. Assessment of special workability and realization of functional potentials was determined by characteristics of external breathing at the end of each rise. Results: it was found that the highest correlation belonged to the following indicators: frequency of breathing (r = 0.38; oxygen consumption (r = 0.29; ventilation equivalent by О 2(r = 0.68. We detected high interconnection between length of distance and ventilation equivalent by СО 2 (r=0.61. It was determined that factors of organism’s anaerobic efficiency change according to relief of track. They increase on rises and reduce on descends. With it increase on long rises is much higher than on middle size rises. Conclusions: effectiveness of different difficulty rises’ overcoming depends on potentials of anaerobic mechanisms and their realization that, to certain extent, influence on sport efficiency.

  4. Single-gender mathematics and science classes and the effects on urban middle school boys and girls

    Science.gov (United States)

    Sudler, Dawn M.

    This study compared the differences in the Criterion-Referenced Competency Test (CRCT) mathematics and science achievement scores of boys and girls in Grade 7 at two urban middle schools. The data allowed the researcher to determine to what degree boys and girls in Grade 7 differ in their mathematics and science achievements within a single-gender environment versus a coeducational learning environment. The study compared any differences between boys and girls in Grade 7 within a single-gender environment in the subjects of mathematics and science, as measured by the CRCT assessments. The study also compared differences between boys and girls in Grade 7 within a coeducational environment in the subjects of mathematics and science, as measured by the CRCT assessments. Two middle schools were used within the study. One middle school was identified as a single-gender school (Middle School A); the other was identified as a coeducational school (Middle School B). This quantitative study applied the use of a descriptive research design. In addition, CRCT scores for the subjects of mathematics and science were taken during the spring of 2008 from both middle schools. Data were measured using descriptive statistics and independent t test calculations. The frequency statistics proceeded to compare each sample performance levels. The data were described in means, standard deviations, standard error means, frequency, and percentages. This method provided an excellent description of a sample scored on the spring 2008 CRCT mathematics and science assessments.

  5. Sea level rise and the geoid: factor analysis approach

    OpenAIRE

    Song, Hongzhi; Sadovski, Alexey; Jeffress, Gary

    2013-01-01

    Sea levels are rising around the world, and this is a particular concern along most of the coasts of the United States. A 1989 EPA report shows that sea levels rose 5-6 inches more than the global average along the Mid-Atlantic and Gulf Coasts in the last century. The main reason for this is coastal land subsidence. This sea level rise is considered more as relative sea level rise than global sea level rise. Thus, instead of studying sea level rise globally, this paper describes a statistical...

  6. Exposure to Violence and Sexual Risk among Early Adolescents in Urban Middle Schools

    Science.gov (United States)

    Coyle, Karin K.; Guinosso, Stephanie A.; Glassman, Jill R.; Anderson, Pamela M.; Wilson, Helen W.

    2017-01-01

    This article examines the relationship between exposure to violence, fear of exposure to violence, and sexual risk among a sample of urban middle school youth. The sample included 911 seventh-grade students who completed self-report surveys. Approximately 20% of the sample reported at least one direct threat or injury with a weapon in the past 3…

  7. Electronic Bullying and Victimization and Life Satisfaction in Middle School Students

    Science.gov (United States)

    Moore, Page Malmsjo; Huebner, E. Scott; Hills, Kimberly J.

    2012-01-01

    This study examined the nature and prevalence of electronic bullying and victimization in a sample of middle school students in a southeastern USA school. Relationships among measures of electronic bullying and victimization and global and domain-specific life satisfaction were also investigated. A total of 855 7th and 8th grade US students…

  8. Diverse Voices: Middle Years Students' Insights into Life in Inclusive Classrooms

    Science.gov (United States)

    Katz, Jennifer; Porath, Marion; Bendu, Charles; Epp, Brent

    2012-01-01

    Thirty-one middle school students (grades 4-7) were interviewed at length about their perspectives regarding academic and social inclusion of students with disabilities; the barriers they perceive to a compassionate, inclusive learning community; and what they believe helps overcome these barriers. In discussing the inclusion of students with…

  9. "It's a Lot of Hectic in Middle School": Student-Teaching in an Urban Classroom.

    Science.gov (United States)

    Meyer, Jim

    1999-01-01

    Relates the experience of a college professor who spent two months as a student teacher in an eighth-grade language arts classroom in an urban public school. Discusses middle school teaching verses college teaching, coming to know the students, discipline, student testing, accountability, teaching writing, the failure of teacher-training programs,…

  10. Norms for Participation in a Middle School Mathematics Classroom and Its Effect on Student Motivation

    Science.gov (United States)

    Megowan-Romanowicz, M. Colleen; Middleton, James A.; Ganesh, Tirupalavanam; Joanou, Jamie

    2013-01-01

    In this article we examine how students engage in learning mathematical concepts in the middle grades of an urban public school in the Southwestern United States. In the context of a 3-year National Science Foundation-funded longitudinal study of the development of students' rational number understanding, we encountered differing levels of…

  11. Mathematics Attitudes and Mathematics Outcomes of U.S. and Belarusian Middle School Students

    Science.gov (United States)

    Lipnevich, Anastasiya A.; MacCann, Carolyn; Krumm, Stefan; Burrus, Jeremy; Roberts, Richard D.

    2011-01-01

    Two multivariate studies examined the applicability of the theory of planned behavior in gauging students' attitudes toward mathematics, as well as the predictive power of mathematics attitudes in explaining students' grades in mathematics. Middle-school students from the United States (N = 382) and Belarus (N = 339) participated. Confirmatory…

  12. Teaching a New Conceptual Framework of Weight and Gravitation in Middle School

    Science.gov (United States)

    Stein, Hana; Galili, Igal; Schur, Yaron

    2015-01-01

    Empirical studies have reported difficulties, confusion, and lack of understanding among students at all levels of instruction regarding the issue of weight--gravitation--weighing relationships. This study examined the impact of a new conceptual framework of weight, on a small group of 7th-grade students (N?=?14) in a middle school in Israel. This…

  13. STEAM Enacted: A Case Study of a Middle School Teacher Implementing STEAM Instructional Practices

    Science.gov (United States)

    Herro, Danielle; Quigley, Cassie

    2016-01-01

    This paper examines the implementation practices of a 6th grade middle school teacher enacting STEAM (science, technology, engineering, art and math) teaching in his classroom after participating in a 45-hour STEAM professional development. Case study is used to detail the process, successes, and challenges. Project-based learning, technology…

  14. Student and Teacher Perceptions of a Single-Sex Middle School Learning Environment.

    Science.gov (United States)

    Smith, Nancy

    A study of a single-sex learning environment was conducted in a public school, Edward Hand Middle School in Lancaster, Pennsylvania; sixth, seventh, and eighth grade students were grouped homogeneously by sex for all major subjects for a period of one semester and grouped heterogeneously for one semester. The study examined the effects that the…

  15. The Relation of Cultural Context and Social Relationships to Career Development in Middle School

    Science.gov (United States)

    Howard, Kimberly A. S.; Ferrari, Lea; Nota, Laura; Solberg, V. Scott H.; Soresi, Salvatore

    2009-01-01

    This study examined the role of supportive relationships (i.e., family, teacher, and peer) and agency (i.e., self-efficacy, motivation, and goal-setting orientation) on three outcomes: academic grades, distress, and career decidedness. Data from 588 middle school youth from Northern (N=322) and Southern (N=266) Italy were analyzed using path…

  16. Cultural Socialization and Ethnic Pride among Mexican-Origin Adolescents during the Transition to Middle School

    Science.gov (United States)

    Hernández, Maciel M.; Conger, Rand D.; Robins, Richard W.; Bacher, Kelly Beaumont; Widaman, Keith F.

    2014-01-01

    The relation between cultural socialization and ethnic pride during the transition to middle school was examined for 674 fifth-grade students (50% boys; M[subscript age] = 10.4 years) of Mexican origin. The theoretical model guiding the study proposes that parent-child relationship quality is a resource in the transmission of cultural values from…

  17. Differentiating Instruction through Multiple Intelligences in a Middle School Mathematics Classroom

    Science.gov (United States)

    Jones, Marcella

    2017-01-01

    Eighth grade students at a middle school in a southern state were required a mathematics pass rate of 67.6% to meet annual yearly progress (AYP). Black and Hispanic students performed below the required pass rate on state assessments; thus, the school did not make AYP from 2007-2010. In an attempt to address low test scores in mathematics, the…

  18. South Dakota Middle School Mathematics Teachers' Perceptions of Teaching Competencies

    Science.gov (United States)

    Bleecker, Heather A.

    2017-01-01

    This quantitative research study investigates South Dakota middle school (grades 5-8) mathematics teachers' perceptions of teaching competencies including general pedagogical knowledge (GPK) and mathematical pedagogical content knowledge (MPCK). The study also considered how teacher characteristics relate to teacher competencies. The study…

  19. "I Have Shakespeare in My Blood": Reading Intervention with Middle School Boys

    Science.gov (United States)

    Guenther, Leah

    2017-01-01

    This research investigates the impact of teaching Shakespeare to below-grade-level readers in an English Language Arts classroom on Chicago's South Side. The students studied are five middle school boys who were observed over a two-year course of study under the same teacher who, after finding success with this method, found herself asking, how is…

  20. Engineering-Based Problem Solving in the Middle School: Design and Construction with Simple Machines

    Science.gov (United States)

    English, Lyn D.; Hudson, Peter; Dawes, Les

    2013-01-01

    Incorporating engineering concepts into middle school curriculum is seen as an effective way to improve students' problem-solving skills. A selection of findings is reported from a science, technology, engineering and mathematics (STEM)-based unit in which students in the second year (grade 8) of a three-year longitudinal study explored…

  1. 75 FR 14565 - NIST Summer Institute for Middle School Science Teachers; Availability of Funds

    Science.gov (United States)

    2010-03-26

    ... areas of science, technology, engineering and mathematics (STEM) at the middle school level (grades 6-8... encourage them to inspire students to pursue careers in STEM fields. DATES: Proposals must be received at... educational institutions that are teaching students in the areas of Science, Technology, Engineering and...

  2. Teaching Mathematical Problem Solving to Middle School Students in Math, Technology Education, and Special Education Classrooms

    Science.gov (United States)

    Bottge, Brian A.; Heinrichs, Mary; Mehta, Zara Dee; Rueda, Enrique; Hung, Ya-Hui; Danneker, Jeanne

    2004-01-01

    This study compared two approaches for teaching sixth-grade middle school students to solve math problems in math, technology education, and special education classrooms. A total of 17 students with disabilities and 76 students without disabilities were taught using either enhanced anchored instruction (EAI) or text-based instruction coupled with…

  3. Increasing Motivation and Engagement in Elementary and Middle School Students through Technology-Supported Learning Environments

    Science.gov (United States)

    Godzicki, Linda; Godzicki, Nicole; Krofel, Mary; Michaels, Rachel

    2013-01-01

    This action research project report was conducted in order to increase motivation and engagement in elementary and middle school students through technology-supported learning environments. The study was conducted from August 27, 2012, through December 14, 2012 with 116 participating students in first-, fourth-, fifth- and eighth-grade classes. To…

  4. The Relations between Bullying Exposures in Middle Childhood, Anxiety, and Adrenocortical Activity

    Science.gov (United States)

    Carney, JoLynn V.; Hazler, Richard J.; Oh, Insoo; Hibel, Leah C.; Granger, Douglas A.

    2010-01-01

    This exploratory study investigated how exposure to bullying at school in middle childhood is associated with student anxiety levels and adrenocortical activity at a time preceding lunch when anxiety about potential bullying would potentially be higher. Ninety-one sixth-grade students (55 female and 36 male) reported being exposed one or more…

  5. Eight Voices of Empowerment: Student Perspectives in a Restructured Urban Middle School

    Science.gov (United States)

    Horn, Brian R.

    2017-01-01

    This article explores student empowerment in a restructured urban Title I middle school. The study includes data from eight participants in an action research project that involved a critical inquiry unit in an eighth-grade language arts class that asked students, "How are you empowered and disempowered by school?" Findings reveal that…

  6. Teachers' Views about Multiple Strategies in Middle and High School Mathematics

    Science.gov (United States)

    Lynch, Kathleen; Star, Jon R.

    2014-01-01

    Despite extensive scholarship about the importance of teaching mathematics with multiple strategies in the elementary grades, there has been relatively little discussion of this practice in the middle and high school levels or in the context of introductory algebra. This article begins our exploration of this practice by addressing the following…

  7. Early-Adolescents' Reading Comprehension and the Stability of the Middle School Classroom-Language Environment

    Science.gov (United States)

    Gámez, Perla B.; Lesaux, Nonie K.

    2015-01-01

    This study examined teachers' language use across the school year in 6th grade urban middle-school classrooms (n = 24) and investigated the influence of this classroom-based linguistic input on the reading comprehension skills of the students (n = 851; 599 language minority learners and 252 English-only) in the participating classrooms. Analysis…

  8. An Evaluation of Supplemental Reading Instruction for At-Risk Middle School Readers

    Science.gov (United States)

    Berkeley, Sheri; Lindstrom, Jennifer H.; Regan, Kelley; Nealy, Allison; Southall, Candice; Stagliano, Christina

    2012-01-01

    One middle school's implementation of corrective reading was evaluated for student reading outcomes and treatment fidelity. Findings indicated that sixth-, seventh-, and eighth-grade students made progress in decoding and oral reading fluency over the school year; however, students did not demonstrate greater gains during the semester enrolled in…

  9. Examining the Relationship between Self-Esteem, Mattering, School Connectedness, and Wellness among Middle School Students

    Science.gov (United States)

    Watson, Joshua C.

    2018-01-01

    With data collected from 254 middle grade (5-8) students enrolled in a rural, southern school district, this study sought to determine the influence of self-esteem, mattering, and school connectedness on students' overall wellness. Using a two-step hierarchical multiple regression analysis, the author found that school connectedness significantly…

  10. Daily Reports of Witnessing and Experiencing Peer Harassment in Middle School

    Science.gov (United States)

    Nishina, Adrienne; Juvonen, Jaana

    2005-01-01

    Two studies examined daily incidents of peer harassment in urban middle schools. Sixth-grade students (M age=11 years) described their daily personal experiences and witnessed accounts of peer harassment, and rated their negative feelings across a 2-week period. In Study 1 (n=95), within-subject analyses across 4 days revealed that both personally…

  11. Students' Perception of School Violence and Math Achievement in Middle Schools of Southern Italy

    Science.gov (United States)

    Caputo, Andrea

    2013-01-01

    This study aims at both investigating bullying episodes occurring at school across different grades (from 6 to 8) and evaluating whether educational achievement in math can be predicted on the ground of students' perception of school violence. The sample was composed of 11,064 students coming from middle schools of Southern Italy. Standardized…

  12. A Case Study of Career Change Professionals in Middle School Teaching

    Science.gov (United States)

    Cutler, Jessica Lynn

    2017-01-01

    The entrance of second-career professionals to the middle grades math/science education field indicates a shift from the typical work avenues to the field of Education. School culture/climate may also be affected by the insertion of older, experienced second-career professionals. Many educators will refer to the feeling of a "calling" to…

  13. The Impact of Middle-School Students' Feedback Choices and Performance on Their Feedback Memory

    Science.gov (United States)

    Cutumisu, Maria; Schwartz, Daniel L.

    2016-01-01

    This paper presents a novel examination of the impact of students' feedback choices and performance on their feedback memory. An empirical study was designed to collect the choices to seek critical feedback from a hundred and six Grade 8 middle-school students via Posterlet, a digital assessment game in which students design posters. Upon…

  14. Cognitive Attributes of Adequate and Inadequate Responders to Reading Intervention in Middle School

    Science.gov (United States)

    Miciak, Jeremy; Stuebing, Karla K.; Vaughn, Sharon; Roberts, Greg; Barth, Amy E.; Fletcher, Jack M.

    2014-01-01

    No studies have investigated the cognitive attributes of middle school students who are adequate and inadequate responders to Tier 2 reading intervention. We compared students in Grades 6 and 7 representing groups of adequate responders (n = 77) and inadequate responders who fell below criteria in (a) comprehension (n = 54); (b) fluency (n = 45);…

  15. Effects of Year-Round Education on Texas Middle School Student Performance

    Science.gov (United States)

    Coopersmith, Michael

    2011-01-01

    This study was designed to investigate the effects of the year-round calendar on student performance in Texas middle schools as measured by achievement on the Texas Assessment of Knowledge and Skills (TAKS) test. In the State of Texas, 15 schools served students in grades six through eight using the year-round calendar in 2009-2010. The 15…

  16. Video Games vs. Reading and School/Cognitive Performances: A Study on 27000 Middle School Teenagers

    Science.gov (United States)

    Lieury, Alain; Lorant, Sonia; Trosseille, Bruno; Champault, Françoise; Vourc'h, Ronan

    2016-01-01

    Video games are a very common leisure activity among teenagers and the aim of this study is to analyse their relations with cognitive and school performances. This study is part of a broad survey, conducted on 27,000 French teenagers (14.5 years old) in middle school (9th grade). The survey contained both a questionnaire on leisure activities…

  17. Drivers of Pontocaspian Biodiversity Rise and Demise

    Science.gov (United States)

    Wesselingh, Frank; Flecker, Rachel; Wilke, Thomas; Leroy, Suzanne; Krijgsman, Wout; Stoica, Marius

    2015-04-01

    In the past two million years, the region of the Black Sea Basin, Caspian Basin and adjacent Anatolia and the Balkans were the stage of the evolution of a unique brackish water fauna, the so-called Pontocaspian fauna. The fauna is the result of assembly of genera with a Paratethyan origin and Anatolian origins during the Early Pleistocene. The rapid diversification of the Pontocaspian fauna is the result of the very dynamic nature of the lakes (the Caspian Sea is technically a lake) and seas in the region in the past two million years. In most times the various lake basins were isolated (like today), but in other episodes connections existed. Regional and global climate as well as the regional tectonic regimes were main drivers of lake basin evolution. Over the past 80 years a major biodiversity crisis is hitting the Pontocaspian faunas due to environmental degradation, pollution and invasive species. In the new EU-ETN PRIDE (Drivers of Pontocaspian Biodiversity Rise and Demise)we will be documenting the geological context of past diversifications and turnover events. We present examples of rapid turnover (biodiversity crises) in the Quaternary, assess driving forces and draw implications for the nature of the current human-mediated biodiversity crisis in the region.

  18. Gas demand to rise in the Usa

    International Nuclear Information System (INIS)

    Anon.

    2000-01-01

    Could US consumption of natural gas rise by as much as 13 quadrillion Btu (quads) over the next 20 years? A new study conducted for the American Gas Foundation by Washington Policy and Analysis says it's certainly a possibility if appropriate policies are implemented. 'Fueling the Future: Natural Gas and New Technologies for a Cleaner 21. Century', confirms what natural gas industry professionals have long suspected: changes in US energy policy that favor increased use of natural gas could improve air quality, conserve energy and reduce reliance on imported oil from politically unstable countries. Consequently, the study forecasts that the environmental, economic and efficiency advantages of natural gas-combined with advances in gas-related technologies and the introduction of new end-use technologies - could help push. US gas consumption into the 35-quad range over the next two decades. Currently, American gas demand is close to 22 quads a year. The study tracks two scenarios: a 'current projection', which shows gas demand reaching nearly 30 quads by 2020, and an 'accelerated projection', which foresees demand topping 35 quads by then based on the adoption of national policies encouraging greater use of natural gas. (authors)

  19. The Rise of Islamic Feminism in Kuwait

    Directory of Open Access Journals (Sweden)

    Haya al-Mughni

    2012-01-01

    Full Text Available The paper examines the emergence of Islamic Feminism in Kuwait, based on the writings and personal accounts of leading Islamist women activists.  It begins with an analysis of the socio-political factors that led to the creation of Islamic groups in the 1980s. It then outlines the role of women in the growth of the Islamic movement and shows how the contradictions between women’s contributions to the Islamic cause and the secondary role they play within the Islamic organizations controlled by men were conducive to the rise of Islamic feminism in the 1990s. The paper also demonstrates how the involvement of islamist women in the struggle for suffrage forging a coalition with liberal women activists had played a decisive role in changing the position of islamist groups towards the enfranchisement of women. The last two sections of the paper look at the participation of islamist women activists in the re-definition of the dichotomy between the public and private spheres and at their involvement in the process of interpretation of Islamic sources, known as Ijtihâd. The paper concludes that the engagement of islamist women activists in the discourse of women’s rights can be powerful agent of change towards a more egalitarian society.

  20. China's rising hydropower demand challenges water sector.

    Science.gov (United States)

    Liu, Junguo; Zhao, Dandan; Gerbens-Leenes, P W; Guan, Dabo

    2015-07-09

    Demand for hydropower is increasing, yet the water footprints (WFs) of reservoirs and hydropower, and their contributions to water scarcity, are poorly understood. Here, we calculate reservoir WFs (freshwater that evaporates from reservoirs) and hydropower WFs (the WF of hydroelectricity) in China based on data from 875 representative reservoirs (209 with power plants). In 2010, the reservoir WF totaled 27.9 × 10(9) m(3) (Gm(3)), or 22% of China's total water consumption. Ignoring the reservoir WF seriously underestimates human water appropriation. The reservoir WF associated with industrial, domestic and agricultural WFs caused water scarcity in 6 of the 10 major Chinese river basins from 2 to 12 months annually. The hydropower WF was 6.6 Gm(3) yr(-1) or 3.6 m(3) of water to produce a GJ (10(9) J) of electricity. Hydropower is a water intensive energy carrier. As a response to global climate change, the Chinese government has promoted a further increase in hydropower energy by 70% by 2020 compared to 2012. This energy policy imposes pressure on available freshwater resources and increases water scarcity. The water-energy nexus requires strategic and coordinated implementations of hydropower development among geographical regions, as well as trade-off analysis between rising energy demand and water use sustainability.

  1. The rise and fall of refineries

    International Nuclear Information System (INIS)

    Chretien, D.

    2002-01-01

    This paper described the rise and fall of refineries in Montreal. Well before Calgary, Montreal was the hub of activity for oil refineries because Montreal was the principle consuming market for petroleum products in Canada. The location was good, particularly since the soil was clay which helped prevent soil infiltration of petroleum. The first refinery in Montreal was constructed in 1916 by Esso, followed by Texaco in 1921 and Gulf in 1931. Initially oil was shipped by boat to the Port of Montreal from Saudi Arabia. Later, the petroleum came mostly from Venezuela. At the beginning of the 1980s many refineries were closed because they became obsolete and upgrading them would have been too costly. Only 3 refineries remain in Quebec, of which 2 are in Montreal. They are owned by Shell and PetroCanada. The third refinery in Quebec is in St-Romuald and is owned by UltraMar. One of the major contributing factors to the decline of the refining industry in Montreal was the decision in 1984 by former Prime Minister Trudeau to force Canadian provinces to purchase their petroleum from Alberta. This caused the petrochemical industry to locate in Sarnia in Ontario, leaving the Montreal refining centre to become obsolete. 3 figs

  2. The Implementation of a Geospatial Information Technology (GIT)-Supported Land Use Change Curriculum with Urban Middle School Learners to Promote Spatial Thinking

    Science.gov (United States)

    Bodzin, Alec M.

    2011-01-01

    This study investigated whether a geospatial information technology (GIT)-supported science curriculum helped students in an urban middle school understand land use change (LUC) concepts and enhanced their spatial thinking. Five 8th grade earth and space science classes in an urban middle school consisting of three different ability level tracks…

  3. Shapes and rising velocities of single bubbles rising through an inner subchannel

    International Nuclear Information System (INIS)

    Tomiyama, Akio; Nakahara, Yusuke; Adachi, Yoshihiro; Hosokawa, Shigeo

    2003-01-01

    Shapes and velocities of single air bubbles rising through stagnant and flowing waters in an inner subchannel are measured by making use of fluorocarbon tubes. It is confirmed that (1) bubble shapes and motions in the subchannel are by far different from those in simple geometry, and they depend on the ratio λ of the bubble diameter to the subchannel hydraulic diameter, (2) when λ > 0.9, a part of a bubble intrudes into neighboring subchannels, and thereby a kind of void drift takes place even with a single bubble, (3) the terminal velocity V T of a small bubble (λ T for cell-Taylor bubbles (λ > 0.9) is presented, and (5) the rising velocity V B in laminar an turbulent flow conditions are well evaluated by substituting the proposed V T models and the ratio of the maximum liquid velocity to the mean liquid velocity into the Nicklin correlation. (author)

  4. Impact of Attending Jump Start Literacy Camp on Reading Achievement among Third and Fourth Grade Students

    Science.gov (United States)

    Padgett, Carrie B.

    2010-01-01

    The Jump Start Literacy Camp was developed as a means to combat summer learning loss. The camp utilized high-energy activities to target phonemic awareness, phonics, vocabulary, fluency, and comprehension. This study examined the effects of the Jump Start Literacy Camp on reading achievement for rising third and fourth grade students in an urban…

  5. The Relation of Visual and Auditory Aptitudes to First Grade Low Readers' Achievement under Sight-Word and Systematic Phonic Instructions. Research Report #36.

    Science.gov (United States)

    Gallistel, Elizabeth; And Others

    Ten auditory and ten visual aptitude measures were administered in the middle of first grade to a sample of 58 low readers. More than half of this low reader sample had scored more than a year below expected grade level on two or more aptitudes. Word recognition measures were administered after four months of sight word instruction and again after…

  6. Effect of Grade Retention in First Grade on Psychosocial Outcomes

    OpenAIRE

    Wu, Wei; West, Stephen G.; Hughes, Jan N.

    2010-01-01

    In a 4-year longitudinal study, the authors investigated effects of retention in first grade on children’s externalizing and internalizing behaviors; social acceptance; and behavioral, cognitive, and affective engagement. From a large multiethnic sample (n = 784) of children below the median on literacy at school entrance, 124 retained children were matched with 251 promoted children on the basis of propensity scores (probability of being retained in first grade estimated from 72 baseline var...

  7. Middle cerebral artery flow velocity waveforms in fetal hypoxaemia.

    Science.gov (United States)

    Vyas, S; Nicolaides, K H; Bower, S; Campbell, S

    1990-09-01

    In 81 small-for-gestational age fetuses (SGA) colour flow imaging was used to identify the fetal middle cerebral artery for subsequent pulsed Doppler studies. Impedence to flow (pulsatility index; PI) was significantly lower, and mean blood velocity was significantly higher, than the respective reference ranges with gestation. Fetal blood sampling by cordocentesis was performed in all SGA fetuses and a significant quadratic relation was found between fetal hypoxaemia and the degree of reduction in the PI of FVWs from the fetal middle cerebral artery. Thus, maximum reduction in PI is reached when the fetal PO2 is 2-4 SD below the normal mean for gestation. When the oxygen deficit is greater there is a tendency for the PI to rise, and this presumably reflects the development of brain oedema.

  8. Operating experiences since rise-to-power test in high temperature engineering test reactor (HTTR)

    International Nuclear Information System (INIS)

    Tochio, Daisuke; Watanabe, Shuji; Motegi, Toshihiro; Kawano, Shuichi; Kameyama, Yasuhiko; Sekita, Kenji; Kawasaki, Kozo

    2007-03-01

    The rise-to-power test of the High Temperature Engineering Test Reactor (HTTR) was actually started in April 2000. The rated thermal power of 30MW and the rated reactor outlet coolant temperature of 850degC were achieved in the middle of Dec. 2001. After that, the reactor thermal power of 30MW and the reactor outlet coolant temperature of 950degC were achieved in the final rise-to-power test in April 2004. After receiving the operation licensing at 850degC, the safety demonstration tests have conducted to demonstrate inherent safety features of the HTGRs as well as to obtain the core and plant transient data for validation of safety analysis codes and for establishment of safety design and evaluation technologies. This paper summarizes the HTTR operating experiences for six years from start of the rise-to-power test that are categorized into (1) Operating experiences related to advanced gas-cooled reactor design, (2) Operating experiences for improvement of the performance, (3) Operating experiences due to fail of system and components. (author)

  9. Rising utilization of inpatient pediatric asthma pathways.

    Science.gov (United States)

    Kaiser, Sunitha V; Rodean, Jonathan; Bekmezian, Arpi; Hall, Matt; Shah, Samir S; Mahant, Sanjay; Parikh, Kavita; Morse, Rustin; Puls, Henry; Cabana, Michael D

    2018-02-01

    Clinical pathways are detailed care plans that operationalize evidence-based guidelines into an accessible format for health providers. Their goal is to link evidence to practice to optimize patient outcomes and delivery efficiency. It is unknown to what extent inpatient pediatric asthma pathways are being utilized nationally. (1) Describe inpatient pediatric asthma pathway design and implementation across a large hospital network. (2) Compare characteristics of hospitals with and without pathways. We conducted a descriptive, cross-sectional, survey study of hospitals in the Pediatric Research in Inpatient Settings Network (75% children's hospitals, 25% community hospitals). Our survey determined if each hospital used a pathway and pathway characteristics (e.g. pathway elements, implementation methods). Hospitals with and without pathways were compared using Chi-square tests (categorical variables) and Student's t-tests (continuous variables). Surveys were distributed to 3-5 potential participants from each hospital and 302 (74%) participants responded, representing 86% (106/123) of surveyed hospitals. From 2005-2015, the proportion of hospitals utilizing inpatient asthma pathways increased from 27% to 86%. We found variation in pathway elements, implementation strategies, electronic medical record integration, and compliance monitoring across hospitals. Hospitals with pathways had larger inpatient pediatric programs [mean 12.1 versus 6.1 full-time equivalents, p = 0.04] and were more commonly free-standing children's hospitals (52% versus 23%, p = 0.05). From 2005-2015, there was a dramatic rise in implementation of inpatient pediatric asthma pathways. We found variation in many aspects of pathway design and implementation. Future studies should determine optimal implementation strategies to better support hospital-level efforts in improving pediatric asthma care and outcomes.

  10. The rise and fall of gluten!

    Science.gov (United States)

    Aziz, Imran; Branchi, Federica; Sanders, David S

    2015-08-01

    Mankind has existed for 2·5 million years but only in the last 10,000 years have we been exposed to wheat. Wheat was first cultivated in the Fertile Crescent (South Western Asia) with a farming expansion that lasted from about 9000BC to 4000BC. Thus it could be considered that wheat (and gluten) is a novel introduction to man's diet! Prior to 1939 the rationing system had already been devised. This led to an imperative to try to increase agricultural production. Thus it was agreed in 1941 that there was a need to establish a Nutrition Society. The very roots of the society were geared towards necessarily increasing the production of wheat. This goal was achieved and by the end of the 20th century, global wheat output had expanded 5-fold. Perhaps as a result the epidemiology of coeliac disease (CD) or gluten sensitive enteropathy has changed. CD is a state of heightened immunological responsiveness to ingested gluten in genetically susceptible individuals. CD now affects 1 % or more of all adults, for which the treatment is a strict lifelong gluten-free diet. However, there is a growing body of evidence to show that a far greater proportion of individuals without coeliac disease are taking a gluten-free diet of their own volition. This clinical entity has been termed non-coeliac gluten sensitivity (NCGS), although the condition is fraught with complexities due to overlap with other gluten-based constituents that can also trigger similar clinical symptoms. This review will explore the relationship between gluten, the rising prevalence of modern coeliac disease, and the new entity of NCGS along with its associated uncertainties.

  11. Mathematical modeling of the Phoenix Rising pathway.

    Directory of Open Access Journals (Sweden)

    Chad Liu

    2014-02-01

    Full Text Available Apoptosis is a tightly controlled process in mammalian cells. It is important for embryogenesis, tissue homoeostasis, and cancer treatment. Apoptosis not only induces cell death, but also leads to the release of signals that promote rapid proliferation of surrounding cells through the Phoenix Rising (PR pathway. To quantitatively understand the kinetics of interactions of different molecules in this pathway, we developed a mathematical model to simulate the effects of various changes in the PR pathway on the secretion of prostaglandin E2 (PGE2, a key factor for promoting cell proliferation. These changes include activation of caspase 3 (C3, caspase 7 (C7, and nuclear factor κB (NFκB. In addition, we simulated the effects of cyclooxygenase-2 (COX2 inhibition and C3 knockout on the level of secreted PGE2. The model predictions on PGE2 in MEF and 4T1 cells at 48 hours after 10-Gray radiation were quantitatively consistent with the experimental data in the literature. Compared to C7, the model predicted that C3 activation was more critical for PGE2 production. The model also predicted that PGE2 production could be significantly reduced when COX2 expression was blocked via either NFκB inactivation or treatment of cells with exogenous COX2 inhibitors, which led to a decrease in the rate of conversion from arachidonic acid to prostaglandin H2 in the PR pathway. In conclusion, the mathematical model developed in this study yielded new insights into the process of tissue regrowth stimulated by signals from apoptotic cells. In future studies, the model can be used for experimental data analysis and assisting development of novel strategies/drugs for improving cancer treatment or normal tissue regeneration.

  12. Turkish Children's Drawing of Nature in a Certain Way: Range of Mountains in the Back, the Sun, Couple of Clouds, a River Rising from the Mountains

    Science.gov (United States)

    Ulker, Riza

    2012-01-01

    This study reveals that Turkish kindergarten through 8th Grade (K-8) students draw nature pictures in a certain way; range of mountains in the background, a sun, a couple of clouds, a river rising from the mountains. There are similarities in the K-8 students' nature drawings in the way these nature items are organized on a drawing paper. We…

  13. Mathematics Preservice Teachers Are Literacy Educators Too: Learning How to Administer and Use Data from the Texas Middle School Fluency Assessment to Plan Instruction

    Science.gov (United States)

    Brooks. Benita R.

    2017-01-01

    House Bill (HB) 2237 (80th Legislature), Section 6: Adolescent Reading Assessment requires districts and public charter schools to administer the Texas Middle School Fluency Assessment (TMSFA) or some other state approved alternative assessment to students in grade seven who do not demonstrate reading proficiency on the grade six state reading…

  14. Gender discrimination in exam grading?

    DEFF Research Database (Denmark)

    Rangvid, Beatrice Schindler

    2018-01-01

    Girls, on average, obtain higher test scores in school than boys, and recent research suggests that part of this difference may be due to discrimination against boys in grading. This bias is consequential if admission to subsequent education programs is based on exam scores. This study assesses t...... tendencies are in accordance with statistical discrimination as a mechanism for grading bias in essay writing and with gender-stereotyped beliefs of math being a male domain....... are scored twice (blind and non-blind). Both strategies use difference-in-differences methods. Although imprecisely estimated, the point estimates indicate a blind grading advantage for boys in essay writing of approximately 5-8% SD, corresponding to 9-15% of the gender gap in essay exam grades. The effect...

  15. Progressive problems higher grade physics

    CERN Document Server

    Kennedy, William

    2001-01-01

    This book fully covers all three Units studied in Scotland's Higher Grade Physics course, providing a systematic array of problems (from the simplest to the most difficult) to lead variously abled pupils to examination success.

  16. Grade 6 Science Curriculum Specifications.

    Science.gov (United States)

    Alberta Dept. of Education, Edmonton. Curriculum Branch.

    This material describes curriculum specifications for grade 6 science in Alberta. Emphases recommended are: (1) process skills (50%); (2) psychomotor skills (10%); (3) attitudes (10%); and (4) subject matter (30%). Priorities within each category are identified. (YP)

  17. Middle School Teacher Misconceptions and Anxieties Concerning Space Science Disciplinary Core Ideas in NGSS

    Science.gov (United States)

    Larsen, Kristine

    2017-01-01

    The Disciplinary Core Ideas (DCI) of the Next Generation Science Standards (NGSS) are grouped into the broad disciplinary areas of Physical Sciences, Life Sciences, Earth and Space Sciences, and Engineering, Technology and Application of Science, and feature learning progressions based on endpoint targets for each grade band. Since the Middle School DCIs build on the expected learning achievements to be reached by the end of Fifth Grade, and High School DCI similarly build on the expected learning achievements expected for the end of Eighth Grade, the Middle School grade band is of particular importance as the bridge between the Elementary and High School curriculum. In states where there is not a special Middle School Certification many of these science classes are taught by teachers prepared to teach at the Elementary level (and who may have limited content background). As a result, some pre-service and in-service teachers have expressed reduced self-confidence in both their own science content knowledge and their ability to apply it in the NGSS-based classroom, while decades of research has demonstrated the pervasiveness of science misconceptions among teachers. Thus the adoption of NGSS has the potential to drive talented teachers out of the profession who feel that they are ill-prepared for this sweeping transition. The key is providing rigorous education in both content and pedagogy for pre-service teachers and quality targeted professional development for in-service teachers. This report focuses on the Middle School Space Sciences grade band DCIs and presents research on specific difficulties, misconceptions and uncertainties with the material demonstrated by pre-service education students over the past four years in a required university science content course, as well as two year-long granted workshop series for current Middle School teachers. This information is relevant to the development of both new content courses aligned with NGSS for pre

  18. Improving GRADE evidence tables part 2

    DEFF Research Database (Denmark)

    Langendam, Miranda; Carrasco-Labra, Alonso; Santesso, Nancy

    2016-01-01

    OBJECTIVES: The Grading of Recommendations Assessment, Development, and Evaluation (GRADE) working group has developed GRADE evidence profiles (EP) and summary of findings (SoF) tables to present evidence summaries in systematic reviews, clinical guidelines, and health technology assessments. Exp...

  19. Massachusetts Early Warning Indicator System (EWIS). "Technical Descriptions of Risk Model Development": Early and Late Elementary Age Groupings (Grades 1-6)

    Science.gov (United States)

    Massachusetts Department of Elementary and Secondary Education, 2013

    2013-01-01

    The Massachusetts Department of Elementary and Secondary Education (Department) created the grades 1-12 Early Warning Indicator System (EWIS) in response to district interest in the Early Warning Indicator Index (EWII) that the Department previously created for rising grade 9 students. Districts shared that the EWII data were helpful, but also…

  20. Graded/Gradient Porous Biomaterials

    Directory of Open Access Journals (Sweden)

    Xigeng Miao

    2009-12-01

    Full Text Available Biomaterials include bioceramics, biometals, biopolymers and biocomposites and they play important roles in the replacement and regeneration of human tissues. However, dense bioceramics and dense biometals pose the problem of stress shielding due to their high Young’s moduli compared to those of bones. On the other hand, porous biomaterials exhibit the potential of bone ingrowth, which will depend on porous parameters such as pore size, pore interconnectivity, and porosity. Unfortunately, a highly porous biomaterial results in poor mechanical properties. To optimise the mechanical and the biological properties, porous biomaterials with graded/gradient porosity, pores size, and/or composition have been developed. Graded/gradient porous biomaterials have many advantages over graded/gradient dense biomaterials and uniform or homogenous porous biomaterials. The internal pore surfaces of graded/gradient porous biomaterials can be modified with organic, inorganic, or biological coatings and the internal pores themselves can also be filled with biocompatible and biodegradable materials or living cells. However, graded/gradient porous biomaterials are generally more difficult to fabricate than uniform or homogenous porous biomaterials. With the development of cost-effective processing techniques, graded/gradient porous biomaterials can find wide applications in bone defect filling, implant fixation, bone replacement, drug delivery, and tissue engineering.

  1. A longitudinal study of school connectedness and academic outcomes across sixth grade.

    Science.gov (United States)

    Niehaus, Kate; Rudasill, Kathleen Moritz; Rakes, Christopher R

    2012-08-01

    The current longitudinal study examines the extent to which school connectedness (i.e., students' perceptions of school support and the number of adults with whom they have a positive relationship) is associated with academic outcomes across sixth grade for students from high poverty neighborhoods. Data were collected from 330 sixth-grade students attending two middle schools in a large public school district. Specifically, students completed a survey to assess their perceived connection to the school environment, and academic information regarding students' grades, attendance, and discipline referrals was obtained from school records. Results from latent growth curve modeling showed that, on average, students' perceptions of school support declined significantly across the sixth-grade year. However, students who reported less decline, or growth, in school support across sixth grade had higher academic achievement at the end of the year than students who reported more decline in school support. Sixth-grade boys were at a greater risk for negative outcomes (i.e., lower school support, lower GPAs, and more discipline referrals) across the school year than girls. Results point to the importance of perceived connectedness to school in helping economically disadvantaged students experience a safe and successful transition to middle school. Copyright © 2012 Society for the Study of School Psychology. All rights reserved.

  2. Hardwood log grades and lumber grade yields for factory lumber logs

    Science.gov (United States)

    Leland F. Hanks; Glenn L. Gammon; Robert L. Brisbin; Everette D. Rast

    1980-01-01

    The USDA Forest Service Standard Grades for Hardwood Factory Lumber Logs are described, and lumber grade yields for 16 species and 2 species groups are presented by log grade and log diameter. The grades enable foresters, log buyers, and log sellers to select and grade those log suitable for conversion into standard factory grade lumber. By using the apropriate lumber...

  3. 7 CFR 810.2204 - Grades and grade requirements for wheat.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 7 2010-01-01 2010-01-01 false Grades and grade requirements for wheat. 810.2204... OFFICIAL UNITED STATES STANDARDS FOR GRAIN United States Standards for Wheat Principles Governing the Application of Standards § 810.2204 Grades and grade requirements for wheat. (a) Grades and grade requirements...

  4. Middle Eastern Christians in Europe

    DEFF Research Database (Denmark)

    Sparre, Sara Cathrine Lei; Hunter, Alistair; Jørgensen, Anne Rosenlund

    This booklet, published in English, Danish, Swedish and Arabic, has the aim to present overall findings of the research project Defining and Identifying Middle Eastern Christians in Europe (DIMECCE) to a broader audience.......This booklet, published in English, Danish, Swedish and Arabic, has the aim to present overall findings of the research project Defining and Identifying Middle Eastern Christians in Europe (DIMECCE) to a broader audience....

  5. ‘Why have STI rates increased in the middle age population?’ -A critical review

    OpenAIRE

    Monsell, Ellen

    2013-01-01

    Background- Recent reports have shown that individuals aged 45-64 are at an increased risk of contracting a sexually transmitted infection, with rates rising steadily over the last several years. Sexual health research has historically focused on the needs and behaviours of the young, with more recent interest into the needs of the older population. This has led to an interest into the literature available regarding the population in the middle of these two groups; the ‘middle age’ population...

  6. The Few, the Changing, the Different: Pubertal Onset, Perceived School Climate and Body Image in Ethnically Diverse Sixth Grade Girls

    OpenAIRE

    Morales, Jessica

    2012-01-01

    The present study examined the impact of pubertal onset, race/ethnicity, and school racial/ethnic composition on girls' body image and perceived school climate (school safety, school liking, and loneliness in school) during the middle school transition. The sample (N = 1,626) included 6th grade Black, Mexican American, White, and Asian girls from 20 diverse middle schools. Hierarchical analyses supported both the early-timing and stressful change hypothesis. That is, experiencing pubertal ons...

  7. An experimental investigation of temperature rise during compaction of pharmaceutical powders.

    Science.gov (United States)

    Krok, Alexander; Mirtic, Andreja; Reynolds, Gavin K; Schiano, Serena; Roberts, Ron; Wu, Chuan-Yu

    2016-11-20

    During pharmaceutical powder compaction, temperature rise in the compressed powder can affect physiochemical properties of the powder, such as thermal degradation and change in crystallinity. Thus, it is of practical importance to understand the effect of process conditions and material properties on the thermal response of pharmaceutical formulations during compaction. The aim of this study was to examine the temperature rise of pharmaceutical powders during tableting, in particular, to explore how the temperature rise depends on material properties, compression speed and tablet shape. Three grades of microcrystalline cellulose (MCC) were considered: MCC Avicel pH 101, MCC Avicel pH 102 and MCC DG. These powders were compressed using a compaction simulator at various compaction speeds (10-500mm/s). Flat faced, shallow convex and normal convex tablets were produced and temperature distributions on the surface of theses tablets upon ejection were examined using an infrared thermoviewer. It was found that an increase in the compaction speed led to an increase in the average surface temperature. A higher surface temperature was induced when the powder was compressed into a tablet with larger surface curvature. This was primarily due to the increasing degree of powder deformation (i.e. the volume reduction) and the effect of interparticule/wall friction. Copyright © 2016 Elsevier B.V. All rights reserved.

  8. Sun Radio Interferometer Space Experiment (SunRISE)

    Science.gov (United States)

    Kasper, Justin C.; SunRISE Team

    2018-06-01

    The Sun Radio Interferometer Space Experiment (SunRISE) is a NASA Heliophysics Explorer Mission of Opportunity currently in Phase A. SunRISE is a constellation of spacecraft flying in a 10-km diameter formation and operating as the first imaging radio interferometer in space. The purpose of SunRISE is to reveal critical aspects of solar energetic particle (SEP) acceleration at coronal mass ejections (CMEs) and transport into space by making the first spatially resolved observations of coherent Type II and III radio bursts produced by electrons accelerated at CMEs or released from flares. SunRISE will focus on solar Decametric-Hectometric (DH, 0.1 space before major SEP events, but cannot be seen on Earth due to ionospheric absorption. This talk will describe SunRISE objectives and implementation. Presented on behalf of the entire SunRISE team.

  9. Characterization of Anisotropic Behavior for High Grade Pipes

    Science.gov (United States)

    Yang, Kun; Huo, Chunyong; Ji, Lingkang; Li, Yang; Zhang, Jiming; Ma, Qiurong

    With the developing requirement of nature gas, the property needs of steel for pipe line are higher and higher, especially in strength and toughness. It is necessary to improve the steel grade in order to ensure economic demand and safety. However, with the rise of steel grade, the differences on properties in different orientations (anisotropic behaviors) become more and more obvious after the process of hot rolling, which may affect the prediction of fracture for the pipes seriously (Thinking of isotropic mechanical properties for material in traditional predict way). In order to get the reason for anisotropic mechanics, a series of tests are carried out for high grade steel pipes, including not only mechanical properties but also microstructures. Result indicates that there are obviously anisotropic behaviors for high grade steel pipes in two orientations (rolling orientation and transverse orientation). Strength is better in T orientation because Rm is higher and Rt 0.5 rises more in T orientation, and toughness is better in L orientation because of the higher Akv and SA in L orientation under a same temperature. Banded structures are formed in T orientation, and the spatial distribution of inclusion and precipitated phases are different in T, L and S orientation. The anisotropic arrangement for the matrix in space (banded structures), which is formed after the process of hot rolling, may affect the mechanical properties in different orientation. Moreover, the elasticity modulus of particles is different from the elasticity modulus of matrix, deformation between particles and matrix may cause stress concentration, and damage forms in this place. Because of the different distribution of particles in space, the level of damage is anisotropic in different orientations, and the anisotropic mechanical properties occur finally. Therefore, the anisotropic mechanical properties are determined by the anisotropic microstructures, both the anisotropic of matrix and the

  10. Rise and Shock: Optimal Defibrillator Placement in a High-rise Building.

    Science.gov (United States)

    Chan, Timothy C Y

    2017-01-01

    Out-of-hospital cardiac arrests (OHCA) in high-rise buildings experience lower survival and longer delays until paramedic arrival. Use of publicly accessible automated external defibrillators (AED) can improve survival, but "vertical" placement has not been studied. We aim to determine whether elevator-based or lobby-based AED placement results in shorter vertical distance travelled ("response distance") to OHCAs in a high-rise building. We developed a model of a single-elevator, n-floor high-rise building. We calculated and compared the average distance from AED to floor of arrest for the two AED locations. We modeled OHCA occurrences using floor-specific Poisson processes, the risk of OHCA on the ground floor (λ 1 ) and the risk on any above-ground floor (λ). The elevator was modeled with an override function enabling direct travel to the target floor. The elevator location upon override was modeled as a discrete uniform random variable. Calculations used the laws of probability. Elevator-based AED placement had shorter average response distance if the number of floors (n) in the building exceeded three quarters of the ratio of ground-floor OHCA risk to above-ground floor risk (λ 1 /λ) plus one half (n ≥ 3λ 1 /4λ + 0.5). Otherwise, a lobby-based AED had shorter average response distance. If OHCA risk on each floor was equal, an elevator-based AED had shorter average response distance. Elevator-based AEDs travel less vertical distance to OHCAs in tall buildings or those with uniform vertical risk, while lobby-based AEDs travel less vertical distance in buildings with substantial lobby, underground, and nearby street-level traffic and OHCA risk.

  11. Does a Rise in Income Inequality Lead to Rises in Transportation Inequality and Mobility Practice Inequality?

    Directory of Open Access Journals (Sweden)

    Joko Purwanto

    2016-06-01

    Full Text Available Social and economic inequalities have sharpened in the late 20th century. During this period, Europe has witnessed a rising unemployment rate, a declining wages for the least qualified workers, a slowing of income growth, and an increasing gap between the richest and the poorest. Based on the hypothesis of the relation between socio-economic condition and mobility behaviour, it is necessary to ask how these socio-economic inequalities manifest themselves in transportation: does a rise in income inequality lead to a rise in transportation inequality and mobility practice inequality? This question is particularly relevant today as some European countries are facing high socio-economic inequalities following the financial crisis that started in 2008. Using results from transport, car ownership and mobility surveys as well as household surveys from the Paris (Île-de-France region between eighties and late nineties, this paper tries to answer this question. The results show how inequalities in transportation and mobility practice have decreased during the period in spite of an increase in income inequalities. We find that the evolution of socio-economic inequality, most specifically income inequality was simply one of the determining factors of the evolution of inequalities in transportation and mobility practice. In fact, the most important role in that evolution is not played by the evolution of income inequality but by the evolution of elasticity between transportation and income. Reducing the effects of this elasticity should be the main target of transport policies to diminish inequality in transportation and mobility practice.

  12. Progressive Collapse of High-Rise Buildings from Fire

    Directory of Open Access Journals (Sweden)

    Pershakov Valerii

    2016-01-01

    Full Text Available Considers ensuring the stability of structures of high-rise buildings against progressive collapse due to fire, proposed measures to ensure the stability of high-rise buildings due to progressive collapse. The analysis of large fires in high-rise buildings with progressive collapse and review of the literature on the issue of progressive collapse. The analysis of the Ukrainian normative documents on progressive collapse resistance.

  13. Rising damp in building walls: the wall base ventilation system

    Energy Technology Data Exchange (ETDEWEB)

    Guimaraes, A.S.; Delgado, J.M.P.Q.; Freitas, V.P. de [Faculdade de Engenharia da Universidade do Porto, Laboratorio de Fisica das Construcoes (LFC), Departamento de Engenharia Civil, Porto (Portugal)

    2012-12-15

    This work intends to validate a new system for treating rising damp in historic buildings walls. The results of laboratory experiments show that an efficient way of treating rising damp is by ventilating the wall base, using the HUMIVENT technique. The analytical model presented describes very well the observed features of rising damp in walls, verified by laboratory tests, who contributed for a simple sizing of the wall base ventilation system that will be implemented in historic buildings. (orig.)

  14. The social values at risk from sea-level rise

    International Nuclear Information System (INIS)

    Graham, Sonia; Barnett, Jon; Fincher, Ruth; Hurlimann, Anna; Mortreux, Colette; Waters, Elissa

    2013-01-01

    Analysis of the risks of sea-level rise favours conventionally measured metrics such as the area of land that may be subsumed, the numbers of properties at risk, and the capital values of assets at risk. Despite this, it is clear that there exist many less material but no less important values at risk from sea-level rise. This paper re-theorises these multifarious social values at risk from sea-level rise, by explaining their diverse nature, and grounding them in the everyday practices of people living in coastal places. It is informed by a review and analysis of research on social values from within the fields of social impact assessment, human geography, psychology, decision analysis, and climate change adaptation. From this we propose that it is the ‘lived values’ of coastal places that are most at risk from sea-level rise. We then offer a framework that groups these lived values into five types: those that are physiological in nature, and those that relate to issues of security, belonging, esteem, and self-actualisation. This framework of lived values at risk from sea-level rise can guide empirical research investigating the social impacts of sea-level rise, as well as the impacts of actions to adapt to sea-level rise. It also offers a basis for identifying the distribution of related social outcomes across populations exposed to sea-level rise or sea-level rise policies

  15. The social values at risk from sea-level rise

    Energy Technology Data Exchange (ETDEWEB)

    Graham, Sonia, E-mail: sonia.graham@unimelb.edu.au [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia); Barnett, Jon, E-mail: jbarn@unimelb.edu.au [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia); Fincher, Ruth, E-mail: r.fincher@unimelb.edu.au [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia); Hurlimann, Anna, E-mail: anna.hurlimann@unimelb.edu.au [Faculty of Architecture, Building and Planning, The University of Melbourne, Architecture and Planning Building, Parkville, Victoria 3010 (Australia); Mortreux, Colette, E-mail: colettem@unimelb.edu.au [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia); Waters, Elissa, E-mail: elissa.waters@unimelb.edu.au [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia)

    2013-07-15

    Analysis of the risks of sea-level rise favours conventionally measured metrics such as the area of land that may be subsumed, the numbers of properties at risk, and the capital values of assets at risk. Despite this, it is clear that there exist many less material but no less important values at risk from sea-level rise. This paper re-theorises these multifarious social values at risk from sea-level rise, by explaining their diverse nature, and grounding them in the everyday practices of people living in coastal places. It is informed by a review and analysis of research on social values from within the fields of social impact assessment, human geography, psychology, decision analysis, and climate change adaptation. From this we propose that it is the ‘lived values’ of coastal places that are most at risk from sea-level rise. We then offer a framework that groups these lived values into five types: those that are physiological in nature, and those that relate to issues of security, belonging, esteem, and self-actualisation. This framework of lived values at risk from sea-level rise can guide empirical research investigating the social impacts of sea-level rise, as well as the impacts of actions to adapt to sea-level rise. It also offers a basis for identifying the distribution of related social outcomes across populations exposed to sea-level rise or sea-level rise policies.

  16. Using Data Mining Techniques Examination of the Middle School Students’ Attitude towards Mathematics in the Context of Some Variables

    OpenAIRE

    Aksoy, Esra; Narli, Serkan; Idil, Feriha Hande

    2016-01-01

    The aim of this study is to examine middle school students’ attitude towards mathematics in the context of their mathematic learning preferences using data mining which is data analysis methodology that has been successfully used in different areas including educational domains. ‘How do I actually learn?’ questionnaire and attitude scale were applied to 702 middle school students studying in three different cities of Turkey. Demographic data (gender, grade level, parents’ education level, pre...

  17. Predicting Change in Early Adolescent Problem Behavior in the Middle School Years: A Mesosystemic Perspective on Parenting and Peer Experiences

    OpenAIRE

    Véronneau, Marie-Hélène; Dishion, Thomas J.

    2010-01-01

    The transition into middle school may be a risky period in early adolescence. In particular, friendships, peer status, and parental monitoring during this developmental period can influence the development of problem behavior. This study examined interrelationships among peer and parenting factors that predict changes in problem behavior over the middle school years. A longitudinal sample (580 boys, 698 girls) was assessed in Grades 6 and 8. Peer acceptance, peer rejection, and their interact...

  18. Differences in grip force control between young and late middle-aged adults.

    Science.gov (United States)

    Zheng, Lianrong; Li, Kunyang; Wang, Qian; Chen, Wenhui; Song, Rong; Liu, Guanzheng

    2017-09-01

    Grip force control is a crucial function for human to guarantee the quality of life. To examine the effects of age on grip force control, 10 young adults and 11 late middle-aged adults participated in visually guided tracking tasks using different target force levels (25, 50, and 75% of the subject's maximal grip force). Multiple measures were used to evaluate the tracking performance during force rising phase and force maintenance phase. The measurements include the rise time, fuzzy entropy, mean force percentage, coefficient of variation, and target deviation ratio. The results show that the maximal grip force was significantly lower in the late middle-aged adults than in the young adults. The time of rising phase was systematically longer among late middle-aged adults. The fuzzy entropy is a useful indicator for quantitating the force variability of the grip force signal at higher force levels. These results suggest that the late middle-aged adults applied a compensatory strategy that allow allows for sufficient time to reach the required grip force and reduce the impact of the early and subtle degenerative changes in hand motor function.

  19. Functionally Graded Mo sintered steels

    Directory of Open Access Journals (Sweden)

    Manuel Cisneros-Belmonte

    2016-12-01

    Full Text Available Functionally graded materials (FGM, the multi-materials, strive to satisfy the numerous requirements demanded of parts in a given combination of compositions and microstructures. The required material compatibility lead the manufacturing process and the achieving of an interface, not always diffuse. Powder metallurgy is one of the techniques used in manufacturing functionally graded materials, in particular the compaction matrix of the possible techniques for forming these materials. In this paper, a process of forming a functionally graded steel based on the use of a high molybdenum steel with cooper and other steel with copper, without molybdenum, is proposed with the aim of concentrating this element to the surface of the workpiece, increasing the mechanical strength. The study is completed with the evaluation of physical properties (density and porosity distribution, mechanical properties (hardness, tensile strength and elongation and microstructural analysis by optical and scanning electron microscopy.

  20. 7 CFR 51.304 - Combination grades.

    Science.gov (United States)

    2010-01-01

    ... Regulations of the Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections, Marketing Practices), DEPARTMENT OF AGRICULTURE REGULATIONS AND STANDARDS UNDER THE AGRICULTURAL MARKETING ACT OF 1946... Standards for Grades of Apples Grades § 51.304 Combination grades. (a) Combinations of the above grades may...

  1. On-Demand Grades: The Effect of Online Grade Book Access on Student Mastery and Performance Goal Orientations, Grade Orientation, Academic Self Efficacy, and Grades

    Science.gov (United States)

    Seldow, Adam Lowell

    2010-01-01

    With the widespread growth of broadband Internet access, teachers, and in many cases, schools and school districts are transitioning from traditional paper-based grade books to student accessible online (Web-based) grade books. Online grade books offer students 24/7, on demand access to grades and various other student data, and have the potential…

  2. Assessment on vulnerability of coastal wetlands to sea level rise in the Yangtze Estuary, China

    Science.gov (United States)

    Cui, L.; Ge, Z.; Zhang, L.

    2013-12-01

    The Yangtze Delta in China is vital economic hubs in terms of settlement, industry, agriculture, trade and tourism as well as of great environmental significance. In recent decades, the prospect of climate change, in particular sea level rise and its effects on low lying coastal areas have generated worldwide attention to coastal ecosystems. Coastal wetlands, as important parts of coastal ecosystem, are particularly sensitive to sea level rise. To study the responses of coastal wetlands to climate change, assess the impacts of climate change on coastal wetlands and formulate feasible and practical mitigation strategies are the important prerequisites for securing the coastal zone ecosystems. In this study, taking the coastal wetlands in the Yangtze Estuary as a case study, the potential impacts of sea-level rise to coastal wetlands habitat were analyzed by the Source-Pathway-Receptor-Consequence (SPRC) model. The key indicators, such as the sea-level rise rate, subsidence rate, elevation, daily inundation duration of habitat and sedimentation rate, were selected to build a vulnerability assessment system according to the IPCC definition of vulnerability, i.e. the aspects of exposure, sensitivity and adaptation. A quantitatively spatial assessment method on the GIS platform was established by quantifying each indicator, calculating the vulnerability index and grading the vulnerability. The vulnerability assessment on the coastal wetlands in the Yangtze Estuary under the sea level rise rate of the present trend and IPCC A1F1 scenario were performed for three sets of projections of short-term (2030s), mid-term (2050s) and long-term (2100s). The results showed that at the present trend of sea level rise rate of 0.26 cm/a, 92.3 % of the coastal wetlands in the Yangtze Estuary was in the EVI score of 0 in 2030s, i.e. the impact of sea level rise on habitats/species of coastal wetlands was negligible. While 7.4 % and 0.3 % of the coastal wetlands were in the EVI score of

  3. Planning of Low-rise Urban Housing Areas

    DEFF Research Database (Denmark)

    Svensson, O.

    In many countries industrialization of house building has led to the building of large, monotonous housing areas with high-rise construction. In Denmark, however, smaller, varied housing areas with low-rise construction and urban features have become predominant. This report contains guidelines...... for the planning of such housing areas....

  4. The Rise of Conservatism since World War II.

    Science.gov (United States)

    Carter, Dan T.

    2003-01-01

    Discusses the rise of the conservatism movement in the United States since World War II. States that laissez-faire capitalism and the rise of communism contributed to the popularity of conservatism in the United States. Focuses on the role of U.S. Presidents, such as Richard Nixon and Ronald Reagan. (CMK)

  5. The rise and fall of V4334 Sagittarii (Sakurai's object)

    NARCIS (Netherlands)

    Duerbeck, HW; Liller, W; Sterken, C; Benetti, S; van Genderen, AM; Arts, J; Kurk, JD; Janson, M; Voskes, T; Brogt, E; Arentoft, T; Dijkstra, R

    CCD UBVRi photometry of the final helium flash object V4334 Sgr (Sakurai's object) carried out during 1997-1999 is presented, and the light curve from its prediscovery rise to the dust obscuration phase is constructed. The optical light curve can be divided into four sections, the rise to maximum,

  6. Mechanism of rising cross sections in hadron-hadron collisions

    International Nuclear Information System (INIS)

    Gershtejn, S.S.; Logunov, A.A.

    1985-01-01

    The interaction of sea constituents with each other and valence quarks, occurring in high-energy hadron collisions, is shown to explain the experimentally observed law for the rise of total cross sections, as well as the energy value at which this rise starts and the difference in these energy values for πN, KN and NN(N-barN) reactions

  7. Fast rise times and the physical mechanism of deep earthquakes

    Science.gov (United States)

    Houston, H.; Williams, Q.

    1991-01-01

    A systematic global survey of the rise times and stress drops of deep and intermediate earthquakes is reported. When the rise times are scaled to the seismic moment release of the events, their average is nearly twice as fast for events deeper than about 450 km as for shallower events.

  8. The New Woman in "The Sun Also Rises"

    Science.gov (United States)

    Yu, Xiaoping

    2010-01-01

    Hemingway is a famous American writer and a spokesman of the Lost Generation. His life attitude of the characters in the novels influenced the whole world. His first masterpiece "The Sun Also Rises" contributes a lot to the rise of feminism and make the world began to be familiar with a term: The New Woman through the portrayal of Brett.…

  9. The U.S. Role in Restructuring the Middle East

    Directory of Open Access Journals (Sweden)

    Arslan Muhammetkurbanovich Gurbangeldiyev

    2015-12-01

    Full Text Available Within the framework of global leadership strategy, cooperation with regional powers turns out to be beneficial for the U.S. In the beginning of the XXI century, the United States relied on Turkey in the Middle East, but “neo-Ottoman” ambitions of Turkish government have caused such strong fears in Washington that in order to control its influence on the neighboring countries, the United States decided to limit the mediating role of Ankara in overall conflicts and dissentions in the region, by giving the prerogative to the other Sunni countries. At the same time, in order to deter the Sunni countries as a whole, US decided to soften its stance on Shiite Iran - a longtime political opponent. The situation in Iraq and the passive position of the U.S. in Syria allowed Shiite Iran to expand its influence in the region. The emerging Sunni-Shiite conflict in the Middle East provoked the rise of extremism in the region, as well as the armed conflict in Yemen. One of the main problems that threatens the regional and global security is a newly emerged radical terrorist organization ISIL, which to fight against, the U.S. provides a military and technical support to the Iraqi Kurds striving for their own sovereignty. The possibility of a rise of a Kurdish state in the region, in turn, poses a threat to the territorial integrity of Iran, Turkey, Syria and Iraq.

  10. Disposal of Kitchen Waste from High Rise Apartment

    Science.gov (United States)

    Ori, Kirki; Bharti, Ajay; Kumar, Sunil

    2017-09-01

    The high rise building has numbers of floor and rooms having variety of users or tenants for residential purposes. The huge quantities of heterogenous mixtures of domestic food waste are generated from every floor of the high rise residential buildings. Disposal of wet and biodegradable domestic kitchen waste from high rise buildings are more expensive in regards of collection and vertical transportation. This work is intended to address the technique to dispose of the wet organic food waste from the high rise buildings or multistory building at generation point with the advantage of gravity and vermicomposting technique. This innovative effort for collection and disposal of wet organic solid waste from high rise apartment is more economical and hygienic in comparison with present system of disposal.

  11. The advisability of high-rise construction in the city

    Science.gov (United States)

    Sergievskaya, Natalia; Pokrovskaya, Tatyana; Vorontsova, Natalya

    2018-03-01

    In this article there discusses the question of advisability high-rise construction, the reasons for its use, both positive and negative sides of it. On the one hand, a number of authors believe that it is difficult to avoid high-rise construction due to the limited areas in very large cities. On the other hand, a number of other authors draw attention to the problems associated with high-rise construction. The author of the article analyses examples of high-rise construction in several countries (UAE, Dubai "Burj Khalifa"; Japan "Tokyo Sky Tree"; United States of America, "Willis Tower"; Russia "Federation Tower") and proves the advisability of high-rise construction in the city.

  12. Sea level rise and the geoid: factor analysis approach

    Directory of Open Access Journals (Sweden)

    Alexey Sadovski

    2013-08-01

    Full Text Available Sea levels are rising around the world, and this is a particular concern along most of the coasts of the United States. A 1989 EPA report shows that sea levels rose 5-6 inches more than the global average along the Mid-Atlantic and Gulf Coasts in the last century. The main reason for this is coastal land subsidence. This sea level rise is considered more as relative sea level rise than global sea level rise. Thus, instead of studying sea level rise globally, this paper describes a statistical approach by using factor analysis of regional sea level rates of change. Unlike physical models and semi-empirical models that attempt to approach how much and how fast sea levels are changing, this methodology allows for a discussion of the factor(s that statistically affects sea level rates of change, and seeks patterns to explain spatial correlations.

  13. The rise of sea level. To understand and to anticipate

    International Nuclear Information System (INIS)

    2013-03-01

    By proposing and briefly commenting graphs and drawings, this publication propose brief presentations of the main issues related to sea level rise: global warming and climate disturbance, description of the phenomenon of sea level rise (difference between sea ice and ground ice, melting of glaciers), increase of sea level rise during the twentieth century, territories at risk (examples of Greenland, Tuvalu, Shanghai), acceleration of ice melting during the twenty first century with many coastal areas at risk, already noticed and possible future impacts in France (glaciers runoff, threatened coasts, example of the Xynthia tempest), how to be united and to anticipate (a threat for millions of people, adaptation to sea level rise, limitation of global warming to limit sea level rise)

  14. Functionally Graded Material: An overview

    CSIR Research Space (South Africa)

    Mahamood, RM

    2012-07-01

    Full Text Available -3146. [50] X. Jin, L. Wu, L. Guo, H. Yu, and Y. Sun, ?Experimental investigation of the mixed-mode crack propagation in ZrO2/NiCr functionally graded materials,? Engineering Fracture Mechanics, vol. 76(12), (2009), pp. 1800-1810. [51] Z. Cheng, D. Gao... by stable crack growth,? Engineering Fracture Mechanics, vol.72(15), (2005), pp. 2359-2372. [47] Z.-H. Jin, and R.H. Dodds Jr, ?Crack growth resistance behavior of a functionally graded material: computational studies,? Engineering Fracture Mechanics...

  15. On the union of graded prime ideals

    Directory of Open Access Journals (Sweden)

    Uregen Rabia Nagehan

    2016-01-01

    Full Text Available In this paper we investigate graded compactly packed rings, which is defined as; if any graded ideal I of R is contained in the union of a family of graded prime ideals of R, then I is actually contained in one of the graded prime ideals of the family. We give some characterizations of graded compactly packed rings. Further, we examine this property on h – Spec(R. We also define a generalization of graded compactly packed rings, the graded coprimely packed rings. We show that R is a graded compactly packed ring if and only if R is a graded coprimely packed ring whenever R be a graded integral domain and h – dim R = 1.

  16. A Contemporary Prostate Cancer Grading System: A Validated Alternative to the Gleason Score

    Science.gov (United States)

    Epstein, Jonathan I.; Zelefsky, Michael J.; Sjoberg, Daniel D.; Nelson, Joel B.; Egevad, Lars; Magi-Galluzzi, Cristina; Vickers, Andrew J.; Parwani, Anil V.; Reuter, Victor E.; Fine, Samson W.; Eastham, James A.; Wiklund, Peter; Han, Misop; Reddy, Chandana A.; Ciezki, Jay P.; Nyberg, Tommy; Klein, Eric A.

    2016-01-01

    Background Despite revisions in 2005 and 2014, the Gleason prostate cancer (PCa) grading system still has major deficiencies. Combining of Gleason scores into a three-tiered grouping (6, 7, 8–10) is used most frequently for prognostic and therapeutic purposes. The lowest score, assigned 6, may be misunderstood as a cancer in the middle of the grading scale, and 3 + 4 = 7 and 4 + 3 = 7 are often considered the same prognostic group. Objective To verify that a new grading system accurately produces a smaller number of grades with the most significant prognostic differences, using multi-institutional and multimodal therapy data. Design, setting, and participants Between 2005 and 2014, 20 845 consecutive men were treated by radical prostatectomy at five academic institutions; 5501 men were treated with radiotherapy at two academic institutions. Outcome measurements and statistical analysis Outcome was based on biochemical recurrence (BCR). The log-rank test assessed univariable differences in BCR by Gleason score. Separate univariable and multivariable Cox proportional hazards used four possible categorizations of Gleason scores. Results and limitations In the surgery cohort, we found large differences in recurrence rates between both Gleason 3 + 4 versus 4 + 3 and Gleason 8 versus 9. The hazard ratios relative to Gleason score 6 were 1.9, 5.1, 8.0, and 11.7 for Gleason scores 3 + 4, 4 + 3, 8, and 9–10, respectively. These differences were attenuated in the radiotherapy cohort as a whole due to increased adjuvant or neoadjuvant hormones for patients with high-grade disease but were clearly seen in patients undergoing radiotherapy only. A five–grade group system had the highest prognostic discrimination for all cohorts on both univariable and multivariable analysis. The major limitation was the unavoidable use of prostate-specific antigen BCR as an end point as opposed to cancer-related death. Conclusions The new PCa grading system has these benefits: more

  17. Is the U.S. Retirement System Contributing to Rising Wealth Inequality?

    Directory of Open Access Journals (Sweden)

    Sebastian Devlin-Foltz

    2016-10-01

    Full Text Available Data from the Survey of Consumer Finances for 1989 through 2013 reveal five broad findings. First, overall retirement plan participation was stable or rising through 2007, though overall participation fell noticeably in the wake of the Great Recession and has remained lower. Second, cohort-based analysis of life-cycle trajectories shows that participation in retirement plans is strongly correlated with income, and that the recent decline in participation is concentrated among younger and low- to middle-income families. Third, the shift in the type of pension coverage from defined benefit (DB to defined contribution (DC occurred within—not just across—income groups. Fourth, retirement wealth is less concentrated than nonretirement wealth, so the growth of retirement wealth relative to nonretirement wealth helped offset the increasing concentration in nonretirement wealth. Fifth, the shift from DB to DC had only a modest effect in the other direction because DC wealth is more concentrated than DB wealth.

  18. The role of executive function in children's competent adjustment to middle school.

    Science.gov (United States)

    Jacobson, Lisa A; Williford, Amanda P; Pianta, Robert C

    2011-01-01

    Executive function (EF) skills play an important role in children's cognitive and social functioning. These skills develop throughout childhood, concurrently with a number of developmental transitions and challenges. One of these challenges is the transition from elementary into middle-level schools, which has the potential to significantly disrupt children's academic and social trajectories. However, little is known about the role of EF in children's adjustment during this transition. This study investigated the relation between children's EF skills, assessed both before and during elementary school, and sixth grade academic and social competence. In addition, the influences of the type of school setting attended in sixth grade on children's academic and behavioral outcomes were examined. EF assessed prior to and during elementary school significantly predicted sixth grade competence, as rated by teachers and parents, in both academic and social domains, after controlling for background characteristics. The interactions between type of school setting and EF skills were significant: Parents tended to report more behavioral problems and less regulatory control in children with weaker EF skills who were attending middle school. In contrast, teachers reported greater academic and behavioral difficulty in students with poorer EF attending elementary school settings. In conclusion, children's performance-based EF skills significantly affect adjustment to the academic and behavioral demands of sixth grade, with parent report suggesting greater difficulty for children with poorer EF in settings where children are provided with less external supports (e.g., middle school).

  19. The Role of Executive Function in Children’s Competent Adjustment to Middle School

    Science.gov (United States)

    Jacobson, Lisa A.; Williford, Amanda P.; Pianta, Robert C.

    2012-01-01

    Executive function (EF) skills play an important role in children’s cognitive and social functioning. These skills develop throughout childhood, concurrently with a number of developmental transitions and challenges. One of these challenges is the transition from elementary into middle-level schools, which has the potential to significantly disrupt children’s academic and social trajectories. However, little is known about the role of EF in children’s adjustment during this transition. This study investigated the relation between children’s EF skills, assessed both before and during elementary school, and sixth grade academic and social competence. In addition, the influences of the type of school setting attended in sixth grade on children’s academic and behavioral outcomes were examined. EF assessed prior to and during elementary school significantly predicted sixth grade competence, as rated by teachers and parents, in both academic and social domains, after controlling for background characteristics. The interactions between type of school setting and EF skills were significant: parents tended to report more behavioral problems and less regulatory control in children with weaker EF skills who were attending middle school. In contrast, teachers reported greater academic and behavioral difficulty in students with poorer EF attending elementary school settings. In conclusion, children’s performance-based EF skills significantly affect adjustment to the academic and behavioral demands of sixth grade, with parent report suggesting greater difficulty for children with poorer EF in settings where children are provided with less external supports (e.g., middle school). PMID:21246422

  20. Sleep Habits of Elementary and Middle School Children in South Texas.

    Science.gov (United States)

    Surani, Salim; Hesselbacher, Sean; Surani, Saherish; Sadasiva, Sreevidya; Surani, Zoya; Surani, Sara S; Khimani, Amina; Subramanian, Shyam

    2015-01-01

    Background. Sleep difficulties, including insufficient sleep and inadequate sleep hygiene, have been prevalent among children. Sleep deprivation can lead to poor grades, sleepiness, and moodiness. We undertook this study to assess the prevalence of sleep abnormalities among elementary and middle school students in South Texas and how the groups compare with one another. Method. After approval from the appropriate school district for a sleep education program, a baseline survey was taken of elementary and middle school students, using the Children's Sleep Habit Questionnaire-Sleep Self-Report Form, which assessed the domains of bedtime resistance, sleep onset delay, sleep anxiety, sleep duration, night awakening, and daytime sleepiness. Results. The survey was completed by 499 elementary and 1008 middle school children. Trouble sleeping was reported by 43% in elementary school, compared with 29% of middle school children. Fifty percent of middle school children did not like sleeping, compared with 26% in elementary school. Bedtime resistance, sleep onset delay, and nighttime awakening were more common among elementary school students. Daytime sleepiness was more common among the middle school children when compared to elementary school children. Conclusions. Sleep abnormalities are present in elementary school children with changes in sleep habits into middle school.

  1. Sleep Habits of Elementary and Middle School Children in South Texas

    Directory of Open Access Journals (Sweden)

    Salim Surani

    2015-01-01

    Full Text Available Background. Sleep difficulties, including insufficient sleep and inadequate sleep hygiene, have been prevalent among children. Sleep deprivation can lead to poor grades, sleepiness, and moodiness. We undertook this study to assess the prevalence of sleep abnormalities among elementary and middle school students in South Texas and how the groups compare with one another. Method. After approval from the appropriate school district for a sleep education program, a baseline survey was taken of elementary and middle school students, using the Children’s Sleep Habit Questionnaire-Sleep Self-Report Form, which assessed the domains of bedtime resistance, sleep onset delay, sleep anxiety, sleep duration, night awakening, and daytime sleepiness. Results. The survey was completed by 499 elementary and 1008 middle school children. Trouble sleeping was reported by 43% in elementary school, compared with 29% of middle school children. Fifty percent of middle school children did not like sleeping, compared with 26% in elementary school. Bedtime resistance, sleep onset delay, and nighttime awakening were more common among elementary school students. Daytime sleepiness was more common among the middle school children when compared to elementary school children. Conclusions. Sleep abnormalities are present in elementary school children with changes in sleep habits into middle school.

  2. Probabilistic commentary: the rise and fall, and rise again, of risk assessment

    International Nuclear Information System (INIS)

    Hendrie, J.M.

    1985-02-01

    Probabilistic risk assessment is mainly concerned with assessing the risks of nuclear power plants. Historically, the field of PRA began with a Senate request for a report on the safety of nuclear reactors in 1972. A quantitative report called WASH-1400 was eventually prepared and published in 1975, and in summary, it stated that nuclear reactors warranted only a low-grade concern in modern society. Criticism of this report and public perception of its results were highly visible subjects in the media, and the criticism led to the fact that PRA fell into disfavor. After Three Mile Island, it was recognized that PRA was a valuable tool for understanding such accidents, and PRA became a bit more popular again by the end of 1979. The usefulness of PRA was also supported by a German study in 1979. PRA played a significant role in the hearings on the Indian Point reactor. The present NRC regards PRA as an important tool in regulatory practice

  3. Are Ghanaian Diaspora Middle Class? Linking Middle Class to ...

    African Journals Online (AJOL)

    2015-06-24

    Jun 24, 2015 ... Enfin, nous analyserons l'influence de cette élite dans le .... In other words, many people who are considered middle class, sometimes in a month ..... the same area, will in future help my children to have a network of friends .... Ghanaian politics since 1992, where the ruling party does not win an election to.

  4. Role of bacterial biofilm in development of middle ear effusion.

    Science.gov (United States)

    Tawfik, Sedeek Abd El-Salam; Ibrahim, Ahmed Aly; Talaat, Iman Mamdoh; El-Alkamy, Soliman Samy Abd El-Raouf; Youssef, Ahmed

    2016-11-01

    Biofilms have been implicated in the development of several chronic upper respiratory tract infections. Role of bacterial biofilms has been well studied in the pathogenesis of chronic rhinosinusitis. However, its impact on development of middle ear effusion is still a matter of debate. To study the extent of surface adenoid biofilm and evaluate its role in the pathogenesis of chronic otitis media with effusion in children. The study was carried out on 40 children in Alexandria Main University Hospital between 1 and 16 years of age without sex predilection, who were divided into two groups. The first group (20 children) had otitis media with effusion associated with adenoid hypertrophy, whereas the second group (20 children) had adenoid hypertrophy without middle ear effusion. Adenoidectomy with ventilation tube insertion was done for group 1 cases, whereas, only Adenoidectomy was done for group 2 cases. The samples were processed for the detection of biofilms by scanning electron microscopy. The biofilm formation was graded according to extension. Biofilm formation was detected on all samples for group 1. Adenoids removed from patients with otitis media with effusion had higher-grade biofilm formation than the other group (P 0.0001). No correlation was found between adenoid size and biofilm formation. In pediatric population, adenoid surface biofilm formation may be involved in the pathogenesis otitis media with effusion.

  5. The Climate Science Special Report: Rising Seas and Changing Oceans

    Science.gov (United States)

    Kopp, R. E.

    2017-12-01

    GMSL has risen by about 16-21 cm since 1900. Ocean heat content has increased at all depths since the 1960s, and global mean sea-surface temperature increased 0.7°C/century between 1900 to 2016. Human activity contributed substantially to generating a rate of GMSL rise since 1900 faster than during any preceding century in at least 2800 years. A new set of six sea-level rise scenarios, spanning a range from 30 cm to 250 cm of 21st century GMSL rise, were developed for the CSSR. The lower scenario is based on linearly extrapolating the past two decades' rate of rise. The upper scenario is informed by literature estimates of maximum physically plausible values, observations indicating the onset of marine ice sheet instability in parts of West Antarctica, and modeling of ice-cliff and ice-shelf instability mechanisms. The new scenarios include localized projections along US coastlines. There is significant variability around the US, with rates of rise likely greater than GMSL rise in the US Northeast and the western Gulf of Mexico. Under scenarios involving extreme Antarctic contributions, regional rise would be greater than GMSL rise along almost all US coastlines. Historical sea-level rise has already driven a 5- to 10-fold increase in minor tidal flooding in several US coastal cities since the 1960s. Under the CSSR's Intermediate sea-level rise scenario (1.0 m of GMSL rise in 2100) , a majority of NOAA tide gauge locations will by 2040 experience the historical 5-year coastal flood about 5 times per year. Ocean changes are not limited to rising sea levels. Ocean pH is decreasing at a rate that may be unparalleled in the last 66 million years. Along coastlines, ocean acidification can be enhanced by changes in the upwelling (particularly along the US Pacific Coast); by episodic, climate change-enhanced increases in freshwater input (particularly along the US Atlantic Coast); and by the enhancement of biological respiration by nutrient runoff. Climate models project

  6. 7 CFR 810.404 - Grades and grade requirements for corn.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 7 2010-01-01 2010-01-01 false Grades and grade requirements for corn. 810.404... OFFICIAL UNITED STATES STANDARDS FOR GRAIN United States Standards for Corn Principles Governing the Application of Standards § 810.404 Grades and grade requirements for corn. Grade Minimum test weight per...

  7. 7 CFR 810.1804 - Grades and grade requirements for sunflower seed.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 7 2010-01-01 2010-01-01 false Grades and grade requirements for sunflower seed. 810... AGRICULTURE OFFICIAL UNITED STATES STANDARDS FOR GRAIN United States Standards for Sunflower Seed Principles Governing the Application of Standards § 810.1804 Grades and grade requirements for sunflower seed. Grade...

  8. Attendance Policies and Student Grades

    Science.gov (United States)

    Risen, D. Michael

    2007-01-01

    The details described in this case study examine the issues related to attendance policies and how such policies might be legally used to affect student grades. Concepts discussed should cause graduate students in educational administration to reflect on the issues presented from various points of view when the students complete an analysis of the…

  9. Grading Rubrics: Hoopla or Help?

    Science.gov (United States)

    Howell, Rebecca J.

    2014-01-01

    The purpose of the study was to offer some quantitative, multivariate evidence concerning the impact of grading rubric use on academic outcome among American higher education students. Using a pre-post, quasi-experimental research design, cross-sectional data were derived from undergraduates enrolled in an elective during spring and fall 2009 at…

  10. Transportation: Grade 8. Cluster IV.

    Science.gov (United States)

    Calhoun, Olivia H.

    A curriculum guide for grade 8, the document is devoted to the occupational cluster "Transportation." It is divided into five units: surface transportation, interstate transportation, air transportation, water transportation, and subterranean transportation (the Metro). Each unit is introduced by a statement of the topic, the unit's…

  11. [Relationship between cyberbullying and the suicide related psychological behavior among middle and high school students in Anhui Province].

    Science.gov (United States)

    Wang, Gengfu; Fang, Yu; Jiang, Liu; Zhou, Guiyang; Yuan, Shanshan; Wang, Xiuxiu; Su, Puyu

    2015-11-01

    To examine the prevalence rate of cyberbullying in middle and high school students in Anhui Province and explore the relationship between cyberbullying and suicide related psychological behavior. A total of 5726 middle and high school students from the 7th to the 12th grades in three regular middle schools and three regular high schools recruited from three cities in the Anhui Province (Tongling, Chuzhou, and Fuyang). Tongling, Chuzhou, and Fuyang are in the south, middle and north of Anhui, respectively. Each city was selected one regular middle school and one regular high school, and 8 classes were selected form each grade from each school. A stratified cluster random sampling method was used to randomly select 5726 participants among the six schools. Self-reports on cyberbullying and suicide related psychological behavior were collected. Among these 5726 adolescents, 46.8% of them involved in cyberbullying. Among them, 3.2% were bullies, 23.8% were victims, and 19.8% were both. Prevalence rates of suicide idea, suicide plan, suicide preparation, suicide implementation were 19.3%, 6.9%, 4.7% and 1.8%, respectively. Cyberbullying involvement, as victims, bullies or bully-victims, increased the risk of four kinds of suicide related psychological behavior (suicide idea, suicide plan, suicide preparation, suicide implementation) (P Cyberbullying has become a common occurrence in middle and high school students. Additionally, cyberbullying is closely related to suicide related psychological behavior among middle and high school students.

  12. Cooperative learning and algebra performance of eighth grade students in United Arab Emirates.

    Science.gov (United States)

    Alkhateeb, Haitham M; Jumaa, Mustafa

    2002-02-01

    This study investigated the effect of cooperative learning on eighth grade students' performance in algebra. 54 boys and 57 girls in four middle-school mathematics classes of Grade 8 in the UAE participated. Over a 3-wk. period, two classes (57 students) were taught using a cooperative learning method, and the other two classes (54 students) were taught using the traditional lecture method. Analysis of covariance using pretest scores as a covariant showed no statistically significant increase in the algebra performance for students in the cooperative learning groups compared with the traditional groups. However, boys in the cooperative setting improved significantly on the performance test compared with boys in the traditional setting.

  13. Effect of laryngoscopy on middle ear pressure during anaesthesia induction.

    Science.gov (United States)

    Degerli, Semih; Acar, Baran; Sahap, Mehmet; Horasanlı, Eyup

    2013-01-01

    The procedure of laryngoscopic orotracheal intubation (LOTI) has many impacts on several parts of the body. But its effect on middle ear pressure (MEP) is not known well. The purpose of this study is to evaluate the MEP changes subsequent to insertion of endotracheal tube with laryngoscope. 44 patients were included in this study with a normal physical examination of ear, nose and throat. A standard general anaesthesia induction without any inhaler agent was performed to the all patients. The MEP measurements for both ears were applied under 1 minute; before induction (BI) and after intubation (AI) with a middle ear analyzer. Also hemodynamic parameters were recorded before induction and after intubation. Of the 44 patients were 25 women and 19 men with a 43.5±15.1 mean age. A statistically significant rise in MEP was seen in all patients subsequent to insertion of endotracheal tube (Ptube, size and type of the blades, drugs and face masking time. But on the other hand in our opinion cardiovascular and haemodynamic response to LOTI has the most impact over the middle ear mucosa with mucosal venous congestion.

  14. Large Topographic Rises on Venus: Implications for Mantle Upwelling

    Science.gov (United States)

    Stofan, Ellen R.; Smrekar, Suzanne E.; Bindschandler, Duane L.; Senske, David A.

    1995-01-01

    Topographic rises on Venus have been identified that are interpreted to be the surface manifestation of mantle upwellings. These features are classified into groups based on their dominant morphology. Atla and Beta Regiones are classified as rift-dominated, Dione, western Eistla, Bell, and Imdr Regiones as volcano-dominated, and Themis, eastern Eistla, and central Eistla Regiones as corona-dominated. At several topographic rises, geologic indicators were identified that may provide evidence of uplifted topography (e.g., volcanic flow features trending upslope). We assessed the minimum contribution of volcanic construction to the topography of each rise, which in general represents less than 5% of the volume of the rise, similar to the volumes of edifices at terrestrial hotspot swells. The total melt volume at each rise is approximated to be 10(exp 4) - 10(exp 6) cu km. The variations in morphology, topography, and gravity signatures at topographic rises are not interpreted to indicate variations in stage of evolution of a mantle upwelling. Instead, the morphologic variations between the three classes of topographic rises are interpreted to indicate the varying influences of lithospheric structure, plume characteristics, and regional tectonic environment. Within each class, variations in topography, gravity, and amount of volcanism may be indicative of differing stages of evolution. The similarity between swell and volcanic volumes for terrestrial and Venusian hotspots implies comparable time-integrated plume strengths for individual upwellings on the two planets.

  15. U.S. Pacific coastal wetland resilience and vulnerability to sea-level rise

    Science.gov (United States)

    Thorne, Karen M.; MacDonald, Glen M.; Guntenspergen, Glenn R.; Ambrose, Richard F.; Buffington, Kevin J.; Dugger, Bruce D.; Freeman, Chase; Janousek, Christopher; Brown, Lauren N.; Rosencranz, Jordan A.; Homquist, James; Smol, John P.; Hargan, Kathryn; Takekawa, John Y.

    2018-01-01

    We used a first-of-its-kind comprehensive scenario approach to evaluate both the vertical and horizontal response of tidal wetlands to projected changes in the rate of sea-level rise (SLR) across 14 estuaries along the Pacific coast of the continental United States. Throughout the U.S. Pacific region, we found that tidal wetlands are highly vulnerable to end-of-century submergence, with resulting extensive loss of habitat. Using higher-range SLR scenarios, all high and middle marsh habitats were lost, with 83% of current tidal wetlands transitioning to unvegetated habitats by 2110. The wetland area lost was greater in California and Oregon (100%) but still severe in Washington, with 68% submerged by the end of the century. The only wetland habitat remaining at the end of the century was low marsh under higher-range SLR rates. Tidal wetland loss was also likely under more conservative SLR scenarios, including loss of 95% of high marsh and 60% of middle marsh habitats by the end of the century. Horizontal migration of most wetlands was constrained by coastal development or steep topography, with just two wetland sites having sufficient upland space for migration and the possibility for nearly 1:1 replacement, making SLR threats particularly high in this region and generally undocumented. With low vertical accretion rates and little upland migration space, Pacific coast tidal wetlands are at imminent risk of submergence with projected rates of rapid SLR.

  16. Population health in an era of rising income inequality: USA, 1980-2015.

    Science.gov (United States)

    Bor, Jacob; Cohen, Gregory H; Galea, Sandro

    2017-04-08

    Income inequality in the USA has increased over the past four decades. Socioeconomic gaps in survival have also increased. Life expectancy has risen among middle-income and high-income Americans whereas it has stagnated among poor Americans and even declined in some demographic groups. Although the increase in income inequality since 1980 has been driven largely by soaring top incomes, the widening of survival inequalities has occurred lower in the distribution-ie, between the poor and upper-middle class. Growing survival gaps across income percentiles since 2001 reflect falling real incomes among poor Americans as well as an increasingly strong association between low income and poor health. Changes in individual risk factors such as smoking, obesity, and substance abuse play a part but do not fully explain the steeper gradient. Distal factors correlated with rising inequality including unequal access to technological innovations, increased geographical segregation by income, reduced economic mobility, mass incarceration, and increased exposure to the costs of medical care might have reduced access to salutary determinants of health among low-income Americans. Having missed out on decades of income growth and longevity gains, low-income Americans are increasingly left behind. Without interventions to decouple income and health, or to reduce inequalities in income, we might see the emergence of a 21st century health-poverty trap and the further widening and hardening of socioeconomic inequalities in health. Copyright © 2017 Elsevier Ltd. All rights reserved.

  17. Step-change: how micro-entrepreneurs enter the upcoming middle-class market in developing and emerging countries

    NARCIS (Netherlands)

    Babah Daouda, Falylath

    2017-01-01

    In developing and emerging (D&E) countries, the large number of poor people, most of whom are female, earn a living based on small-scale self-employed units established in subsistence marketplaces in the large informal sector. With the recent rise of middle-classes in developing and emerging

  18. The Evolution of Middle Schools.

    Science.gov (United States)

    George, Paul S.

    2001-01-01

    Over the past 30 years, Florida's 500 middle schools have become more sizeable, racially segregated, and security conscious. Other features include interdisciplinary team organization, warring curricula, block schedules, integrated technology, inclusion, ability grouping, corporate practices, and female and minority principals committed to…

  19. Antinuclear movement in Middle Tennessee

    International Nuclear Information System (INIS)

    Dwyer, L.E.

    1977-01-01

    This is a social anthropological analysis of the antinuclear movement in Middle Tennessee. This social movement was determined to halt the construction of proposed nuclear power plants in Tennessee, especially one the Tennessee Valley Authority (TVA) intended to build in Middle Tennessee. The data for the study were gathered by participant-observation interviewing, and the examination of documents from February 1973 through March 1975. The treatment of the data is based on transactional analysis and portions of the network model. This social movement was composed of a series of informally organized cells connected by a loose network of people who visited and talked with one another. Individual cells tended to be organized on a geographical basis, as was communication. Activity-initiators, however, often contacted antinuclear personnel in other Middle Tennessee cells. Movement activity for many of the antinuclear activists was short-lived. The strategic maneuvers of the movement utilized all the structurally and legally possible alternatives and the nuclear opponents hoped that the public would pressure public officials to oppose nuclear plants. Although the antinuclear activists worked very hard, they did not succeed in halting the planned construction of the Middle Tennessee nuclear plant. Indeed, they had not succeeded in the summer of 1977

  20. Middle Level Learning Number 47

    Science.gov (United States)

    Lapham, Steven S.; Hanes, Peter; Turner, Thomas N.; Clabough, Jeremiah C.; Cole, William

    2013-01-01

    This issue's "Middle Level Learning" section presents two articles. The first is "Harriet Tubman: Emancipate Yourself!" (by Steven S. Lapham and Peter Hanes). "Argo," which won the 2012 Oscar for best picture, was about a daring escape of six U.S. diplomats from Iran during the 1979 hostage crisis. Now imagine the…

  1. The RiSE climbing robot: body and leg design

    Science.gov (United States)

    Saunders, A.; Goldman, D. I.; Full, R. J.; Buehler, M.

    2006-05-01

    The RiSE robot is a biologically inspired, six legged climbing robot, designed for general mobility in scansorial (vertical walls, horizontal ledges, ground level) environments. It exhibits ground reaction forces that are similar to animal climbers and does not rely on suction, magnets or other surface-dependent specializations to achieve adhesion and shear force. We describe RiSE's body and leg design as well as its electromechanical, communications and computational infrastructure. We review design iterations that enable RiSE to climb 90° carpeted, cork covered and (a growing range of) stucco surfaces in the quasi-static regime.

  2. Anthropogenic forcing dominates sea level rise since 1850

    DEFF Research Database (Denmark)

    Jevrejeva, Svetlana; Grinsted, Aslak; Moore, John

    2009-01-01

    The rate of sea level rise and its causes are topics of active debate. Here we use a delayed response statistical model to attribute the past 1000 years of sea level variability to various natural (volcanic and solar radiative) and anthropogenic (greenhouse gases and aerosols) forcings. We show...... that until 1800 the main drivers of sea level change are volcanic and solar radiative forcings. For the past 200 years sea level rise is mostly associated with anthropogenic factors. Only 4 ± 1.5 cm (25% of total sea level rise) during the 20th century is attributed to natural forcings, the remaining 14 ± 1...

  3. Leasing instruments of high-rise construction financing

    Science.gov (United States)

    Aleksandrova, Olga; Ivleva, Elena; Sukhacheva, Viktoria; Rumyantseva, Anna

    2018-03-01

    The leasing sector of the business economics is expanding. Leasing instruments for high-rise construction financing allow to determine the best business behaviour in the leasing economy sector, not only in the sphere of transactions with equipment and vehicles. Investments in high-rise construction have a multiplicative effect. It initiates an active search and leasing instruments use in the economic behaviour of construction organizations. The study of the high-rise construction sector in the structure of the leasing market participants significantly expands the leasing system framework. The scheme of internal and external leasing process factors influence on the result formation in the leasing sector of economy is offered.

  4. Smartphone-based grading of apple quality

    Science.gov (United States)

    Li, Xianglin; Li, Ting

    2018-02-01

    Apple quality grading is a critical issue in apple industry which is one economical pillar of many countries. Artificial grading is inefficient and of poor accuracy. Here we proposed to develop a portable, convenient, real-time, and low cost method aimed at grading apple. Color images of the apples were collected with a smartphone and the grade of sampled apple was assessed by a customized smartphone app, which offered the functions translating RGB color values of the apple to color grade and translating the edge of apple image to weight grade. The algorithms are based on modeling with a large number of apple image at different grades. The apple grade data evaluated by the smartphone are in accordance with the actual data. This study demonstrated the potential of smart phone in apple quality grading/online monitoring at gathering and transportation stage for apple industry.

  5. Breast cancer in South-Eastern European countries since 2000: Rising incidence and decreasing mortality at young and middle ages.

    Science.gov (United States)

    Dimitrova, Nadya; Znaor, Ariana; Agius, Dominic; Eser, Sultan; Sekerija, Mario; Ryzhov, Anton; Primic-Žakelj, Maja; Coebergh, Jan Willem

    2017-09-01

    Marked variations exist in the incidence and mortality trends of major cancers in South-Eastern European (SEE) countries which have now been detailed by age for breast cancer (BC) to seek clues for improvement. We brought together and analysed data from 14 cancer registries (CRs), situated in SEE countries or directly adjacent. Age-standardised rate at world standard (ASRw) and truncated incidence and mortality rates during 2000-2010 by year, and for four age groups, were calculated. Average annual percentage change of rates was estimated using Joinpoint regression. Annual incidence rates increased significantly in countries and age groups, by 2-4% (15-39 years), 2-5% (40-49), 1-4% (50-69) and 1-6% (at 70+). Mortality rates decreased significantly in all age-groups in most countries, but increased up to 5% annually above age 55 in Ukraine, Serbia, Moldova and Cyprus. The BC data quality was evaluated by internationally agreed indicators which appeared suboptimal for Moldova, Bosnia and Herzegovina and Romania. The observed variations of incidence trends reflect the influence of risk factors, as well as levels of early detection activities (screening). While mortality rates were mostly decreasing, probably due to improved cancer care and introduction of more effective systemic treatment regimens, the worrying increasing mortality trends in the 55-plus age groups in some countries have to be addressed by health professionals and policymakers. In order to assess and monitor the effects of cancer control activities in the region, the CRs need substantial investments. Copyright © 2017 Elsevier Ltd. All rights reserved.

  6. Alternative education programmes and middle school dropout in Honduras

    Science.gov (United States)

    Marshall, Jeffery H.; Aguilar, Claudia R.; Alas, Mario; Castellanos, Renán Rápalo; Castro, Levi; Enamorado, Ramón; Fonseca, Esther

    2014-05-01

    Honduras has made steady progress in expanding post-primary school coverage in recent years, but many rural communities still do not provide a middle (lower secondary) school. As a result, Honduras has implemented a number of middle school alternative programmes designed to meet the needs of at-risk populations throughout the country. This article analyses dropout in three of the four main alternative lower secondary school programmes in Honduras over a three-year period for a cohort of roughly 5,500 students. The results show that these programmes are indeed reaching a vulnerable population in the country, but dropout rates are generally very high - upwards of 50 per cent in some cases - between Grades 7 and 9. Furthermore, even in the control school comparison samples made up of formal lower secondary schools, about 25 per cent of children leave school between Grades 7 and 9. The authors' analysis includes propensity score matching (PSM) methods that make more focused comparisons between students in alternative programmes and control samples. These results show that dropout rates in alternative programmes are not much different than in control schools, and only significant in one programme comparison, when taking into account family background characteristics like socioeconomic status (SES). Multivariate analysis within alternative programme samples finds that attrition is lower in those learning centres which have adopted key features of formal schools, such as university-educated teachers. The results highlight the tremendous variation in the alternative middle school sector in terms of programme features, school quality and student outcomes, as well as the challenges of expanding this sector to meet the growing demand for lower secondary schooling in Honduras.

  7. The Effect of Grade Configuration on the Academic Achievement of Special Needs Students: The Case of New Jersey

    Science.gov (United States)

    Nelson, Derrick E.

    2013-01-01

    For over thirty years, research has been conducted on the relative benefits of integrating the sixth through eighth grades within the structure of the K-8 elementary school or of establishing a freestanding middle school structure. While the available research clearly supports the positive effects of the K-8 structure on academic achievement in…

  8. The Misplaced Math Student: Lost in Eighth-Grade Algebra. The 2008 Brown Center Report on American Education. Special Release

    Science.gov (United States)

    Loveless, Tom

    2008-01-01

    This new study is being released as an advance excerpt of the 2008 Brown Center Report on American Education. This new report finds that the nation's push to challenge more students by placing them in advanced math classes in eighth grade has had unintended and damaging consequences, as some 120,000 middle-schoolers are now struggling in advanced…

  9. Developmental Trajectories of Boys’ Driven Exercise and Fasting During the Middle School Years

    Science.gov (United States)

    Davis, Heather A.; Guller, Leila; Smith, Gregory T.

    2016-01-01

    Boys appear to engage in eating disorder behavior, particularly nonpurging compensatory behaviors such as driven exercise and fasting, at higher rates than previously thought. Little is known about the development of these behaviors in adolescent boys. In a sample of 631 non-binge eating and non-purging boys studied once in 5th grade and 6 times over the 3 years of middle school (grades 6 through 8), we found that (a) for some youth, driven exercise and fasting were present from grade 6; (b) different boys progressed along different trajectories of engagement in driven exercise and fasting, with some boys engaging in no driven exercise or fasting (65.8% and 83.5%, respectively), some boys engaging in driven exercise and fasting throughout middle school (25.2% and 16.5%, respectively), and other boys discontinuing engagement in driven exercise (9%); (c) 5th grade depression, eating expectancies, and thinness expectancies predicted subsequent trajectory group membership; and (d) boys engaging in driven exercise and fasting in 8th grade remained distressed. Boys’ engagement in driven exercise and fasting behavior merits the attention of researchers and clinicians. PMID:26707543

  10. [Risk assessment of different grades of hypertension during the treatment of patients with acute pulpitis].

    Science.gov (United States)

    Chen, Hong-tao; Wang, Wen-ying; Wang, Jin; Liang, Ya-ping; Wang, Xiao-ting; Hou, Guang-min; Ji, Ai-ping

    2016-02-18

    To evaluate the vital signs changes, influence factors in different grades of hypertension patients during the treatment of acute pulpitis, in order to obtain the risk prevention measures. In this study, 90 different grades of hypertension patients with acute pulpitis were recruited from February 2014 to February 2015 in the Department of Oral Emergency, Peking University School and Hospital of Stomatology. The information about the patients'general health, oral treatment, life signs of change information was collected. Patients were divided into high risk group, middle risk group, and low risk group (30 patients for each group). (1) Compared with the preoperative, systolic blood pressure (90%), diastolic blood pressure (80%), heart rate increase (100%) were increased in the high risk group. The increase rates of the middle risk group and the low risk group were significantly lower than those of the high risk group (Ppulpitis treatment. Dentist should take some measures to avoid the risks.

  11. Effects of traditional teaching vs a multisensory instructional package on the science achievement and attitudes of English language learners middle-school students and English-speaking middle-school students

    Science.gov (United States)

    Crosley, Haver

    This research was designed to determine the relative effectiveness of a Multi-sensory Instructional Package (MIP) (Dunn & Dunn, 1992) versus Traditional Teaching (TT) on the science achievement- and attitude-test scores of middle-school English Language Learner (ELL) and English-speaking sixth-, seventh-, and eighth-grade middle-school students. The dependent variables were students' science- and attitude-test scores. The independent variables were the two instructional strategies, ELL and English-speaking (Non-ELL) status, and three grade levels. The sample consisted of 282 sixth-, seventh-, and eighth-grade ELL and Non-ELL middle-school students. Learning Styles: The Clue to You! (LS: CY) (Burke & Dunn, 1998) was administered to determine learning-style preferences. The control groups were taught sixth-, seventh-, and eighth-grade science lessons traditionally and the experimental groups were instructed on the same units using MIPs. The Semantic Differential Scale (SDS) (Pizzo, 1981) was administered to reveal attitudinal differences. All three groups experienced both traditional and multi-sensory instruction in all three sub-units. The data subjected to statistical analyses supported the use of an MIP rather than a traditional approach for teaching science content to both ELLs and English-speaking middle-school students. Analysis of variance (ANOVA) revealed a positive and significant impact on achievement scores. Furthermore, the students indicated significantly more positive attitudes when instructed with an MIP approach.

  12. Analysis of coastal protection under rising flood risk

    Directory of Open Access Journals (Sweden)

    Megan J. Lickley

    2014-01-01

    Full Text Available Infrastructure located along the U.S. Atlantic and Gulf coasts is exposed to rising risk of flooding from sea level rise, increasing storm surge, and subsidence. In these circumstances coastal management commonly based on 100-year flood maps assuming current climatology is no longer adequate. A dynamic programming cost–benefit analysis is applied to the adaptation decision, illustrated by application to an energy facility in Galveston Bay. Projections of several global climate models provide inputs to estimates of the change in hurricane and storm surge activity as well as the increase in sea level. The projected rise in physical flood risk is combined with estimates of flood damage and protection costs in an analysis of the multi-period nature of adaptation choice. The result is a planning method, using dynamic programming, which is appropriate for investment and abandonment decisions under rising coastal risk.

  13. Application of tuned mass dampers in high-rise construction

    Science.gov (United States)

    Teplyshev, Vyacheslav; Mylnik, Alexey; Pushkareva, Maria; Agakhanov, Murad; Burova, Olga

    2018-03-01

    The article considers the use of tuned mass dampers in high-rise construction for significant acceleration and amplitude of vibrations of the upper floors under dynamic wind influences. The susceptibility of people to accelerations in high-rise buildings and possible means of reducing wind-induced fluctuations in buildings are analyzed. The statistics of application of tuned mass dampers in high-rise construction all over the world is presented. The goal of the study is to identify an economically attractive solution that allows the fullest use of the potential of building structures in high-rise construction, abandoning the need to build massive frames leading to over-consumption of materials.

  14. Can False Advertising Give Rise to Antitrust Liability? (2)

    OpenAIRE

    Christopher Cole

    2014-01-01

    With the Retractable Technologies case, is the theory that false advertising can give rise to violations of the Sherman Act, while rarely invoked, gaining traction? Christopher A. Cole (Crowell & Moring)

  15. Can False Advertising Give Rise to Antitrust Liability?

    OpenAIRE

    Christopher Cole

    2014-01-01

    With the Retractable Technologies case, is the theory that false advertising can give rise to violations of the Sherman Act, while rarely invoked, gaining traction? Christopher A. Cole (Crowell & Moring)

  16. African Gifts of the Spirit: Pentecostalism & the Rise of a ...

    African Journals Online (AJOL)

    African Gifts of the Spirit: Pentecostalism & the Rise of a Zimbabwean Transnational Religious Movement by David Maxwell (Ohio: Ohio University Press, 2006) – XI + 250 pp., ISBN 13:978-0-8124-1738-6, Paperback.

  17. Special considerations for testing rising rotating stem MOVs

    International Nuclear Information System (INIS)

    Moffa, A.

    1992-01-01

    Rising stem gate and globe valves have one plane of motion: linear. The stem is either pushed or pulled into position. For rising and rotating stems however, there are two planes of motion: linear and rotational. The stem is twisted in addition to being pushed or pulled into position. Typical motor operated valve (MOV) sizing equations account only for the linear requirements of the valve to open or close. Theoretical calculations performed for a two-dimensional system predict that in the running load region, rotational torque requirements far exceed the linear requirements. To validate the theoretical model, torque testing of rising rotating stem valves was preformed, using Liberty Technologies Valve Operation Test and Evaluation System (VOTES). Theoretical and empirical data have produced a new perspective for operational requirements and a guideline for testing rising rotating stem valves

  18. Prognostic Value of Absolute versus Relative Rise of Blood ...

    African Journals Online (AJOL)

    maternal outcome than a relative rise in the systolic/diastolic blood pressure from mid pregnancy, which did not reach this absolute level. We conclude that in the Nigerian obstetric population, the practice of diagnosing pregnancy hypertension on ...

  19. The Rise of Pan-Islamism in Britain

    National Research Council Canada - National Science Library

    Shepard, Scott

    2006-01-01

    .... This thesis explains what is fueling the rise of pan-Islamism in Britain. For many Muslims, their religious identity is stronger than their British identity because they are alienated from the rest of society...

  20. Rising public debt profile in Nigeria: risks and sustainablity issues ...

    African Journals Online (AJOL)

    Rising public debt profile in Nigeria: risks and sustainablity issues. ... and state governments has echoed new concerns for policy stakeholders in Nigeria. ... the share of concessional loan in external debt stock and develop Public-Private ...