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Sample records for brain practicum breeze

  1. Warm Breeze

    Institute of Scientific and Technical Information of China (English)

    1999-01-01

    Middle-aged female painter Wang Yingchun is a first-grade artist at the Research Instituteof Chinese Painting. With a solid foundation in: Chinese painting, oil painting andsculpture she began to experiment in the early 1980s with stone carving, murals, folkart, landscapes, flowers and birds, cubism, expressionism and abstractionism. Living ina time of social transformation, she felt pressed to create her own artistic style. Aftervisiting South America, she produced a batch of works which drew the essence of theBeast Group and used a new technique, without sketching the contours of flowers, sothat the paintings look wild, romantic and exuberant. This painting Warm Breeze displaysWang’s style: While extensively studying the paintings of various schools, she makes hertraditional Chinese ink paintings tinted with modern color.

  2. Rethinking the Practicum: Limitations and Possibilities

    Science.gov (United States)

    Grudnoff, Lexie

    2011-01-01

    Teachers and policy makers often view the practicum as being the critical component of initial teacher education (ITE) programmes. While numerous studies have investigated the practicum in ITE, less attention has been given to the role practicum plays in the transition from preparation to teaching. This study investigated 12 New Zealand first-year…

  3. Skill Acquisition and Perception Change of Counselor Candidates During Practicum.

    Science.gov (United States)

    Delaney, Daniel J.; And Others

    The practicum is designed to provide supervised experience in the development of well trained counselors. A study at the University of Illinois using 10 post-master's degree students enrolled in a one semester supervised practicum investigated the relationship between the practicum and: (1) the development of counselor skills of empathy, warmth…

  4. Determining the Impact of Online Practicum Facilitation for Inservice Teachers

    Science.gov (United States)

    Frey, Timothy

    2008-01-01

    This study investigated the impact of a project-based graduate practicum experience that was facilitated online. The study investigated the effects of the online practicum experience by: (a) using quantitative data to assess the learning and professional growth of the practicum participants in comparison to a group of teachers that did not…

  5. Cosmic rays in a galactic breeze

    Science.gov (United States)

    Taylor, Andrew M.; Giacinti, Gwenael

    2017-01-01

    Motivated by the discovery of the nonthermal Fermi bubble features both below and above the Galactic plane, we investigate a scenario in which these bubbles are formed through galacto-centric outflow. Cosmic rays (CR) both diffusing and advecting within a galactic breeze outflow, interacting with the ambient gas present, give rise to γ -ray emission, providing an approximately flat surface brightness profile of this emission, as observed. Applying the same outflow profile further out within the disk, the resultant effects on the observable CR spectral properties are determined. A hardening in the spectra due to the competition of advective and diffusive propagation within a particular energy range is noted, even in the limiting case of equal CR diffusion coefficients in the disk and halo. It is postulated that this hardening effect may relate to the observed hardening feature in the CR spectrum at a rigidity of ≈200 GV .

  6. Cosmic Rays in a Galactic Breeze

    CERN Document Server

    Taylor, Andrew M

    2016-01-01

    Motivated by the discovery of the non-thermal Fermi bubble features both below and above the Galactic plane, we investigate a scenario in which these bubbles are formed through Galacto-centric outflow. Cosmic rays (CR) both diffusing and advecting within a Galactic breeze outflow, interacting with the ambient gas present, give rise to gamma-ray emission, providing an approximately flat surface brightness profile of this emission, as observed. Applying the same outflow profile further out within the disk, the resultant effects on the observable CR spectral properties are determined. A hardening in the spectra due to the competition of advective and diffusive propagation within a particular energy range is noted, even in the limiting case of equal CR diffusion coefficients in the disk and halo. It is postulated that this hardening effect may relate to the observed hardening feature in the CR spectrum at a rigidity of $\\approx 200$ GV.

  7. Scholarship of Teaching in Rehabilitation Counseling Practicum

    Science.gov (United States)

    Kiener, Michael

    2007-01-01

    Understanding how students learn is a common goal for most educators; however pedagogical research in rehabilitation counselor education is limited. This study employed action research to investigate how six students learned beginning counseling skills in a rehabilitation counseling practicum class. Approximately 150 data points were analyzed by…

  8. Metaphor and Pedagogy in the Design Practicum

    Science.gov (United States)

    Logan, Cheri

    2008-01-01

    This paper discusses the ways in which the long-established tradition of the design "practicum" continues to structure teaching and learning in undergraduate programmes. It draws on an in-depth empirical study of one degree course in graphic design and accompanying research in a small number of professional graphic design studios; this dual focus…

  9. The Teaching Practicum in Thailand: Three Perspectives

    Science.gov (United States)

    Phairee, Chatpong; Sanitchon, Nalinee; Suphanangthong, Irada; Graham, Steve; Prompruang, Jidapa; de Groot, Freek Olaf; Hopkins, Dave

    2008-01-01

    This article examines the teaching practicum in Thailand as it occurs in three settings: "Rajabhats"--four-year universities which offer an additional period of teaching practice, and where the vast majority of EFL teachers are educated; regular universities; and a TESOL short course certificate program for non-Thais preparing to teach English as…

  10. The Influence of Soil Moisture, Coastline Curvature, and Land-Breeze Circulations on Sea-Breeze Initiated Precipitation

    Science.gov (United States)

    Baker, David R.; Lynn, Barry H.; Boone, Aaron; Tao, Wei-Kuo; Simpson, Joanne

    2000-01-01

    Idealized numerical simulations are performed with a coupled atmosphere/land-surface model to identify the roles of initial soil moisture, coastline curvature, and land breeze circulations on sea breeze initiated precipitation. Data collected on 27 July 1991 during the Convection and Precipitation Electrification Experiment (CAPE) in central Florida are used. The 3D Goddard Cumulus Ensemble (GCE) cloud resolving model is coupled with the Goddard Parameterization for Land-Atmosphere-Cloud Exchange (PLACE) land surface model, thus providing a tool to simulate more realistically land-surface/atmosphere interaction and convective initiation. Eight simulations are conducted with either straight or curved coast-lines, initially homogeneous soil moisture or initially variable soil moisture, and initially homogeneous horizontal winds or initially variable horizontal winds (land breezes). All model simulations capture the diurnal evolution and general distribution of sea-breeze initiated precipitation over central Florida. The distribution of initial soil moisture influences the timing, intensity and location of subsequent precipitation. Soil moisture acts as a moisture source for the atmosphere, increases the connectively available potential energy, and thus preferentially focuses heavy precipitation over existing wet soil. Strong soil moisture-induced mesoscale circulations are not evident in these simulations. Coastline curvature has a major impact on the timing and location of precipitation. Earlier low-level convergence occurs inland of convex coastlines, and subsequent precipitation occurs earlier in simulations with curved coastlines. The presence of initial land breezes alone has little impact on subsequent precipitation. however, simulations with both coastline curvature and initial land breezes produce significantly larger peak rain rates due to nonlinear interactions.

  11. Research on Teaching Practicum--A Systematic Review

    Science.gov (United States)

    Lawson, Tony; Çakmak, Melek; Gündüz, Müge; Busher, Hugh

    2015-01-01

    The aim of the present study is to conduct a systematic review research which focuses on research studies into the school practicum. In order to identify the main issues and also to provide a contemporary picture of practicum, 114 studies published on the topic are reviewed and analysed in terms of: (i) aims, (ii) main participants, (iii)…

  12. National Depression Screening Day: An Undergraduate Practicum Experience

    Science.gov (United States)

    Kay, Theresa S.; Rangel, Dianna K.

    2009-01-01

    Several authors have described the many benefits of undergraduate practica, how to organize an undergraduate practicum experience, and different undergraduate practicum activities. This article provides a description of the process of organizing and implementing National Depression Screening Day at a university campus as an undergraduate practicum…

  13. Great Expectations: The TESOL Practicum as a Professional Learning Experience

    Science.gov (United States)

    Canh, Le Van

    2014-01-01

    The practicum as a learning opportunity for prospective teachers of ESL or EFL remains underexplored. Most of the studies that have been documented in the TESOL practicum literature were conducted in either North America or a few Asian contexts with novice teachers. In this study the author used diaries by five Vietnamese EFL student teachers as…

  14. Burning out during the Practicum: The Case of Teacher Trainees

    Science.gov (United States)

    Kokkinos, Constantinos M.; Stavropoulos, George

    2016-01-01

    The purpose of the present study was to empirically examine the link between practicum-related stressors, perceived general practicum stress, personal variables (i.e. general and teaching self-efficacy, epistemological beliefs, conceptions about teaching and learning, and trait anxiety) and burnout dimensions in a sample of 174 Greek student…

  15. Rehabilitation Counseling Practicum: A National Survey of Design and Implementation

    Science.gov (United States)

    Dalgin, Rebecca Spirito; Bruch, Lori A.; Barber, Gerianne

    2010-01-01

    This national study documents current processes and practices used in the master's level rehabilitation counseling practicum such as type of supervision provided, training setting, activities related to rehabilitation skill development, written documentation used during practicum, and use of microskills training. Results are described in relation…

  16. Gestalt Therapy and the Counseling Practicum: A Marriage.

    Science.gov (United States)

    Witchel, Robert

    This paper briefly summarizes the literature relating to the counseling practicum experience, as well as reviews the development and basic principles of Gestalt therapy. A marriage between the Gestalt therapy approach and the counseling practicum is developed as follows: "Experiential learning, the here-and-now, I-and-thou, and integrating…

  17. Peer Observation and Reflection in the ELT Practicum

    Science.gov (United States)

    Day, Richard R.

    2013-01-01

    The purpose of this study was to determine if peer observation (PO) in an ELT practicum for graduate students led to reflective teaching. The 15 students in the practicum taught EFL at two universities in rural Thailand in eight-week intensive courses. Five questions were investigated: (1) Did PO help the students engage in reflective teaching?…

  18. An innovative clinical practicum to teach evidence-based practice.

    Science.gov (United States)

    Brancato, Vera C

    2006-01-01

    A clinical practicum was successfully implemented for RN to BSN students to apply evidence-based practice to actual clinical problems affecting nursing practice. The author describes how this practicum was implemented and the requisite resources and support systems. This senior-level capstone course enabled students to understand and value a lifelong learning approach to evidence-based practice.

  19. Dynamical analysis of sea-breeze hodograph rotation in Sardinia

    Directory of Open Access Journals (Sweden)

    N. Moisseeva

    2014-09-01

    Full Text Available This study investigates the diurnal evolution of sea-breeze rotation over an island in the mid-latitudes. Earlier research on sea-breezes in Sardinia shows that the onshore winds around various coasts of the island exhibit both the theoretically predicted clockwise rotation as well as seemingly anomalous anti-clockwise rotation. A non-hydrostatic fully compressible numerical model (WRF is used to simulate wind fields on and around the island on previously-studied sea-breeze days and is shown to accurately capture the circulation on all coasts. Diurnal rotation of wind is examined and patterns of clockwise and anti-clockwise rotation are identified. A dynamical analysis is performed by extracting individual forcing terms from the horizontal momentum equations. Analysis of several regions around the island shows that the direction of rotation is a result of a complex interaction between near-surface and synoptic pressure gradient, Coriolis and advection forcings. An idealized simulation is performed over an artificial island with dramatically simplified topography, yet similar dimensions and latitude to Sardinia. Dynamical analysis of the idealized case reveals a rather different pattern of hodograph rotation to the real Sardinia, yet similar underlying dynamics. The research provides new insights into the dynamics underlying sea-breeze hodograph rotation, especially in coastal zones with complex topography and/or coastline.

  20. Practicum y evaluación de competencias

    Directory of Open Access Journals (Sweden)

    Aurelio Villa Sánchez

    2004-01-01

    Full Text Available El artículo destaca el papel del Practicum en el desarrollo de competencias que permitan la transferencia de conocimientos a situaciones de trabajo, en congruencia con el enfoque del Proceso de Convergencia Europea de Educación Superior. Señala los elementos clave de un Practicum, el sentido y significado que en él adquieren las competencias y el significado que cobra como espacio ideal para evaluarlas. En consecuencia, sugieren ideas dirigidas a orientar el modo de incorporar la evaluación de competencias en la evaluación del Practicum.

  1. A Comparison of Methods for Providing Evaluative Feedback to Practicum Students on Segments of Teaching during Special Education Practicum in Rural Areas.

    Science.gov (United States)

    Deasy, Gia; And Others

    West Virginia University provides on-the-job practicum experience to rural special education teachers who are pursuing certification while working on "out-of-field" permits. An important aspect of the competency-based practicum experience is evaluative feedback. Two methods of evaluative feedback were used with 22 practicum students who…

  2. Granulation of coke breeze fine for using in the sintering process

    Directory of Open Access Journals (Sweden)

    Mohamed F.M.

    2010-01-01

    Full Text Available Coke breeze is the main fuel used in the sintering process. The value of -3+1 mm. represents the most favorable particle size for coke breeze in the sintering process. About 20% of total coke fines (-0.5 mm are produced during different steps of preparation. Introducing these fines during the sintering process proves to be very harmful for different operating parameters. Thus ,this study aims at investigating the production of granules resulting from these fines using molasses as organic binder and its application in sintering of an iron ore. The results showed that the granules having the highest mechanical properties were obtained with 14.5 wt % molasses addition. The sintering experiments were performed by using coke breeze in different shapes (-3+1 mm in size, coke breeze without sieving and coke breeze granules -3+1 mm. The reduction experiments, microscopic structure and X-ray analysis for the produced sinter were carried out. The results revealed that, all sinter properties (such as shatter test, productivity of sinter machine and blast furnace, reduction time and chemical composition for produced sinter by using coke breeze with size -3+1 mm and coke breeze granules were almost the same. The iron ore sinter which was produced by using coke breeze without sieving yielded low productivity for both sinter machine and blast furnace. Furthermore, using coke breeze without sieving in sintering of an iron ore decreases the vertical velocity of sinter machine and increases the reduction time.

  3. Sea Breeze Front Storm and Its Composite Analysis in Beibu Gulf

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    [Objective] The aim was to study the sea breeze front storm and its composite analysis in Beibu Gulf. [Method] By dint of routine observation data, ground automatic meteorology data and European numerical mode grid data, rainstorm caused by sea breeze in Guangxi during 1990 and 2007 and the strong convection triggered by sea breeze on June 5 in 2008 were expounded. The main characteristics of the configuration of circulation in the low and high latitude of breeze front of middle scale were summarized. [Resu...

  4. Narrative inquiry in a nursing practicum.

    Science.gov (United States)

    Lindsay, Gail M; Smith, Faith

    2003-06-01

    One approach to creating research-based nursing education is to think and write narratively about the daily life of a BScN program student and her teacher in diverse settings and over time. Gail, as a nurse-teacher, and Faith, as a nursing student and now Public Health Nurse, reconstruct their teaching-learning experiences in an integrated practicum in maternal-child health services as a narrative inquiry. After presenting this reconstruction of experience at a conference on maternal scholarship, further inquiry into their experiences shows how narrative inquiry matters to construction of nursing praxis and to life-long learning as a nurse. Teaching-learning relationships are seen as a template for a student's connections to people experiencing nursing care and to other clinicians. Construction of stories to live by that take into account becoming a nurse, constructing knowledge and enacting caring-healing nursing practices is illuminated through narrative inquiry.

  5. Sea breezes and coastal jets in southeastern Spain

    Science.gov (United States)

    Kottmeier, Christoph; Palacio-Sese, Pablo; Kalthoff, Norbert; Corsmeier, Ulrich; Fiedler, Franz

    2000-11-01

    Sea breezes and low-level jet (LLJ) streams are studied in the region between the Eastern Castilla-La Mancha and the Mediterranean coast of southeastern Spain. The simplified concept of two-dimensional terrain and meteorological conditions explains the spatially and diurnally varying wind system consistently. The changes, as a function of time, height and distance to the coast, of temperature, pressure and wind as well as of certain observed phenomena, such as LLJs and strongly baroclinic zones, result from the response of the mesoscale flow to differential heating. Wind changes are generally found to be consistent with mesoscale changes in geostrophic winds as estimated from station pressure measurements. The LLJs mark the penetration depth of the sea breeze during daytime, where a baroclinic zone develops at the transition between continental air masses and marine air masses, typically at a distance of 150 km from the coast. The analysis is based on aerological data and ground-based measurements from the European Field Experiment in a Desertification Threatened Area (EFEDA) experiments in 1991 and 1994 as well as on 3-hourly data from three synoptic stations of the Spanish meteorological network for April-October in 1991 and 1994. After corrections were made for instrument errors and atmospheric tides, diurnal pressure variations document vertically integrated mass fluxes perpendicular to the coast. Amplitudes of diurnal pressure and temperature changes scatter significantly and are largest in midsummer. They are weakly correlated and pressure amplitudes remain large in spring and autumn when diurnal temperature changes are reduced. With about 6 h delay to the regular development of onshore winds at the coast during daytime, pronounced wind peaks are observed over the eastern plateau at Albacete and Barrax in the late afternoon. Case studies show that they are accompanied by development of baroclinically driven LLJs, whereas winds at Tomelloso, 220-km inland

  6. Accuracy of Wind Prediction Methods in the California Sea Breeze

    Science.gov (United States)

    Sumers, B. D.; Dvorak, M. J.; Ten Hoeve, J. E.; Jacobson, M. Z.

    2010-12-01

    In this study, we investigate the accuracy of measure-correlate-predict (MCP) algorithms and log law/power law scaling using data from two tall towers in coastal environments. We find that MCP algorithms accurately predict sea breeze winds and that log law/power law scaling methods struggle to predict 50-meter wind speeds. MCP methods have received significant attention as the wind industry has grown and the ability to accurately characterize the wind resource has become valuable. These methods are used to produce longer-term wind speed records from short-term measurement campaigns. A correlation is developed between the “target site,” where the developer is interested in building wind turbines, and a “reference site,” where long-term wind data is available. Up to twenty years of prior wind speeds are then are predicted. In this study, two existing MCP methods - linear regression and Mortimer’s method - are applied to predict 50-meter wind speeds at sites in the Salinas Valley and Redwood City, CA. The predictions are then verified with tall tower data. It is found that linear regression is poorly suited to MCP applications as the process produces inaccurate estimates of the cube of the wind speed at 50 meters. Meanwhile, Mortimer’s method, which bins data by direction and speed, is found to accurately predict the cube of the wind speed in both sea breeze and non-sea breeze conditions. We also find that log and power law are unstable predictors of wind speeds. While these methods produced accurate estimates of the average 50-meter wind speed at both sites, they predicted an average cube of the wind speed that was between 1.3 and 1.18 times the observed value. Inspection of time-series error reveals increased error in the mid-afternoon of the summer. This suggests that the cold sea breeze may disrupt the vertical temperature profile, create a stable atmosphere and violate the assumptions that allow log law scaling to work.

  7. Application of fine-grained coke breeze fractions in the process of iron ore sintering

    Directory of Open Access Journals (Sweden)

    M. Niesler

    2014-01-01

    Full Text Available The testing cycle, described in the paper, included fine-grained coke breeze granulation tests and iron concentrate sintering tests with the use of selected granulate samples. The use of granulated coke breeze in the sintering process results in a higher process efficiency, shorter sintering duration and fuel saving.

  8. Impacts of topography and land degradation on the sea breeze over eastern Spain

    NARCIS (Netherlands)

    Miao, J.F.; Kroon, L.J.M.; Vilà-Guerau de Arellano, J.; Holtslag, A.A.M.

    2003-01-01

    A three-dimensional non-hydrostatic atmospheric model RAMS, version3b, is used to examine the impact of complex topography on the sea breeze under heterogeneous and degradation land use characteristics. In the study, it is shown that topography plays an important role in the sea-breeze circulation b

  9. Sea breeze-induced wind sea growth in the central west coast of India.

    Digital Repository Service at National Institute of Oceanography (India)

    Aboobacker, V.M.; Seemanth, M.; Samiksha, S.V.; Sudheesh, K.; Kerkar, J.; Vethamony, P.

    in the northwest direction, and grow progressively while propagating towards the coast. Relationships between wind speed and wind sea height have been derived, and they fairly explain the generation of wind seas by the sea breeze system. Since, the land breeze...

  10. The impact of sea breeze under different synoptic patterns on air pollution within Athens basin.

    Science.gov (United States)

    Mavrakou, Thaleia; Philippopoulos, Kostas; Deligiorgi, Despina

    2012-09-01

    Air quality in densely populated urban coastal areas is directly related to the coupling of the synoptic and the local scale flows. The dispersion conditions within Athens basin, under the influence of different meteorological forcings, lead to distinct spatio-temporal air pollution patterns. The aim of the current observational research is to identify and examine the effect of sea breeze under different atmospheric circulation patterns on air pollution levels for a one-year study period (2007). The study employs surface pressure maps, routine meteorological observations at two coastal sites and nitrogen monoxide (NO), nitrogen dioxide (NO(2)) and ozone (O(3)) concentrations from a network of four air quality stations within the Athens basin. A three-step methodology is applied that incorporates a set of criteria for classifying atmospheric circulation and identifying sea breeze events under each circulation pattern. Two types of sea breeze development are identified (pure sea breeze-PSB and modified sea breeze-MSB) with distinct characteristics. Sea breeze is found to develop more frequently under offshore compared to onshore and parallel to the shoreline background flows. Poor dispersion conditions (high nitrogen oxides-NO(x) and O(3) concentrations) are connected to the pure sea breeze cases and to those cases where sea breeze interacts with a moderate northerly flow during the warm period. The levels of NO(x) and O(3) for the northern Athens basin area are found to be significantly higher during the sea breeze days compared to the Etesian days. Regarding the diurnal variation of ozone for the sea breeze days, peak concentrations and higher intra-daily ranges are observed. Day-to-day pollution accumulation (build-up effect) is measured for O(3) at the northern stations in the Athens basin.

  11. Dispersal of seeds by the tropical sea breeze.

    Science.gov (United States)

    Greene, D F; Quesada, M; Calogeropoulos, C

    2008-01-01

    Given the dependence of most wind-pollinated and wind-dispersed species on low relative humidity (RH) for abscission, and the minimization of RH in the early afternoon, there ought to be a marked directional bias in seed dispersal at sites with a strong local diurnal circulation. We filmed the abscission of seeds of five wind-dispersed tropical species near the coast of Mexico (Jalisco). We found that (1) most abscission occurred during the period from 10:00 to 17:00 hours; (2) there was a strong bias for landward dispersal due to the midday sea breeze; (3) the little nocturnal dispersal that occurred was toward the sea (due to the night land breeze); (4) there was no abscission in the absence of wind (i.e., indoors) except for one species; and (5) holding relative humidity constant, the proportion of seeds diurnally abscising is strongly correlated with horizontal wind speed. We predict that a similar bias (this time for upslope dispersal) for xerochastic dispersal will occur in complex terrain. We conclude that in coastal and mountainous terrain, dispersal models (and inverse modeling efforts) must include a directionality term.

  12. Hot Jupiter Breezes: Time-dependent Outflows from Extrasolar Planets

    CERN Document Server

    Owen, James E

    2015-01-01

    We explore the dynamics of magnetically controlled outflows from Hot Jupiters, where these flows are driven by UV heating from the central star. In these systems, some of the open field lines do not allow the flow to pass smoothly through the sonic point, so that steady-state solutions do not exist in general. This paper focuses on this type of magnetic field configuration, where the resulting flow becomes manifestly time-dependent. We consider the case of both steady heating and time-variable heating, and find the time scales for the corresponding time variations of the outflow. Because the flow cannot pass through the sonic transition, it remains subsonic and leads to so-called breeze solutions. One manifestation of the time variability is that the flow samples a collection of different breeze solutions over time, and the mass outflow rate varies in quasi-periodic fashion. Because the flow is subsonic, information can propagate inward from the outer boundary, which determines, in part, the time scale of the...

  13. ECO RISK MANAGEMENT IN MINING, ECO PRACTICUM

    Directory of Open Access Journals (Sweden)

    Slobodan Radosavljević

    2011-11-01

    Full Text Available Environmental protection is a key factor for sustainable development in the area of exploitationof natural energy resources. Solving problems in this field requires a quality strategic positioning ecoexploitation sites, which is the most burdened by environmental problems, based on modernscientific approaches and definitions. Realistically frequent criticism and environmental hazards inmining the potential of various statements. There is a long-term disruption of natural flow and overallecological balance of the system. Demonstrated environmental destruction and damage of smaller orlarger extent the result, which can be accessed from the aspect of taking corrective action by the state.A complex analysis of the causes, the analysis of environmental risks and the definition of preventiveenvironmental strategy, hardly can speak, at least in the forms of modern analytical andmethodological approaches. The basis of determining the initiation of interest on takingresponsibility for local environmental priorities and their protection in areas of intensive exploitationof works. It is a negative impact on human health and the need to preserve the total ecosystem.Analysis of environmental risks is becoming logistically purpose and need with which to be flexible,adaptable, and efficiently organize and manage access to environmental reality and truth in thecontext of improvements, now and in the near future. This paper presents real experiences andresearch results in environmental practicum proposals and implementation of modern concepts,methods and models for the analysis of environmental risks.

  14. Evaluating Teacher-Candidates’ Teaching in the Extended Practicum

    Directory of Open Access Journals (Sweden)

    Edwin G. Ralph

    2004-07-01

    Full Text Available This study reports the aggregate results of the evaluations of the teaching performance of 17 cohorts of teacher-candidates (n = 374, who completed their extended practicum during their pre-service teacher-education program at one Western Canadian university. Over a 15-year period, one of the researchers served as the College Supervisor for these cohorts in their respective four-month internship in schools in a variety of locations throughout the province. The teacher-candidates’ final evaluations on nine categories of teaching performance revealed varying levels of strength among the skill areas. Implications of the findings are drawn: (a for the undergraduate program administrators, faculty members, and practicum-program personnel at the university connected to this study, and (b for other teacher-education institutions interested in making use of this information to help inform their deliberations in assessing/improving their own pre-service and practicum initiatives.

  15. Idealized WRF model sensitivity simulations of sea breeze types and their effects on offshore windfields

    Science.gov (United States)

    Steele, C. J.; Dorling, S. R.; von Glasow, R.; Bacon, J.

    2013-01-01

    The behaviour and characteristics of the marine component of sea breeze cells have received little attention relative to their onshore counterparts. Yet there is a growing interest and dependence on the offshore wind climate from, for example, a wind energy perspective. Using idealized model experiments, we investigate the sea breeze circulation at scales which approximate to those of the southern North Sea, a region of major ongoing offshore wind farm development. We also contrast the scales and characteristics of the pure and the little known corkscrew and backdoor sea breeze types, where the type is pre-defined by the orientation of the synoptic scale flow relative to the shoreline. We find, crucially, that pure sea breezes, in contrast to corkscrew and backdoor types, can lead to substantial wind speed reductions offshore and that the addition of a second eastern coastline emphasises this effect through generation of offshore "calm zones". The offshore extent of all sea breeze types is found to be sensitive to both the influence of Coriolis acceleration and to the boundary layer scheme selected. These extents range, for example for a pure sea breeze produced in a 2 m s-1 offshore gradient wind, from 0 km to 21 km between the Mellor-Yamada-Nakanishi-Niino and the Yonsei State University schemes respectively. The corkscrew type restricts the development of a backdoor sea breeze on the opposite coast and is also capable of traversing a 100 km offshore domain even under high along-shore gradient wind speed (>15 m s-1) conditions. Realistic variations in sea surface skin temperature and initializing vertical thermodynamic profile do not significantly alter the resulting circulation, though the strengths of the simulated sea breezes are modulated if the effective land-sea thermal contrast is altered. We highlight how sea breeze impacts on circulation need to be considered in order to improve the accuracy of both assessments of the offshore wind energy climate and

  16. Interactions between the thermal internal boundary layer and sea breezes

    Energy Technology Data Exchange (ETDEWEB)

    Steyn, D.G. [The Univ. of British Columbia, Dept. of Geography, Atmospheric Science Programme, Vancouver (Canada)

    1997-10-01

    In the absence of complex terrain, strongly curved coastline or strongly varying mean wind direction, the Thermal Internal Boundary Layer (TIBL) has well known square root behaviour with inland fetch. Existing slab modeling approaches to this phenomenon indicate no inland fetch limit at which this behaviour must cease. It is obvious however that the TIBL cannot continue to grow in depth with increasing fetch, since the typical continental Mixed Layer Depths (MLD) of 1500 to 2000 m must be reached between 100 and 200 km from the shoreline. The anticyclonic conditions with attendant strong convection and light winds which drive the TIBL, also drive daytime Sea Breeze Circulations (SBC) in the coastal zone. The onshore winds driving mesoscale advection of cool air are at the core of TIBL mechanisms, and are invariably part of a SBC. It is to be expected that TIBL and SBC be intimately linked through common mechanisms, as well as external conditions. (au)

  17. Cooperating Teachers' Roles and Responsibilities in a MATESOL Practicum

    Science.gov (United States)

    Payant, Caroline; Murphy, John

    2012-01-01

    Responding to a gap in relevant literatures, this study explores cooperating teachers' perceptions of their roles and responsibilities as contributors to the practicum experiences of preservice teachers of English as a second language who were pursuing a master's degree. Research tools featured focus group and individual interviews with 11…

  18. Assessing the Performance in EFL Teaching Practicum: Student Teachers' Views

    Science.gov (United States)

    Merç, Ali

    2015-01-01

    This study aims to find out whether or not pre-service EFL teachers are satisfied with the way their performance in teaching practice is measured. A questionnaire was developed to elicit student teachers' views related to the components of the measurement policies employed in the two practicum courses at Anadolu University English Language Teacher…

  19. Fostering Theory-Practice Reflection in Teaching Practicums

    Science.gov (United States)

    Stenberg, Katariina; Rajala, Antti; Hilppo, Jaakko

    2016-01-01

    This article presents a design for supporting theory-practice reflection in teacher practicums. This design is based on three design principles that promote a transformative stance towards the creation of novel pedagogical approaches: mutual transformation of theory and practice, co-design among supervising teachers, university lecturers and…

  20. Explicating Practicum Program Theory: A Case Example in Human Ecology

    Science.gov (United States)

    Chandler, Kathryn M. M.; Williamson, Deanna L.

    2013-01-01

    This study explicated the theory underpinning the Human Ecology Practicum Program offered in the Department of Human Ecology at the University of Alberta. The program has operated for 40 years but never been formally evaluated. Using a document analysis, focus group and individual interviews, and a stakeholder working group, we explored…

  1. Microsimulations: Bridging Theory and Practice in the Composition Practicum

    Science.gov (United States)

    Brooks, Ronald Clark

    2007-01-01

    Many new teaching assistants have concerns about keeping authority in the classroom. These concerns make it more difficult for the teachers of the composition practicum to focus discussions on other important pedagogical issues. This study found that microsimulations were an effective way of allowing graduate students to respond to challenges to…

  2. The Impact of Facebook in Teaching Practicum: Teacher Trainees' Perspectives

    Science.gov (United States)

    Goktalay, Sehnaz Baltaci

    2015-01-01

    Prompt feedback is one of the critical components of teacher education programs. To reap the greatest benefit from the teaching practicum process, the quality of feedback as well as its implementation by stakeholders, supervisors, cooperating teachers, and teacher trainees, takes on great importance. The purpose of this study is to examine how Web…

  3. Enhancing Practicum Supervision with Asynchronous and Synchronous Technologies

    Science.gov (United States)

    Teo, Yiong Hwee; McNamara, Sue; Romeo, Geoff; Gronn, Donna

    2015-01-01

    Three video/web conferencing technologies (Pocket Camcorder, Skype, Adobe Connect) were used in regional schools in Australia to determine whether the technologies are appropriate for the needs of the university supervisor, trainee teachers and supervising teachers with regard to practicum teaching placements. Findings revealed that Pocket…

  4. Pre-Service Music Teachers' Concerns before a Practicum Stint

    Science.gov (United States)

    Ramanaidu, Ramesh Rao; Wellington, Edna; Chew, Lim Zek; Hassan, Nik Rozalind Nik

    2014-01-01

    A crucial element in any teacher training programme is teaching practice. Terms such as practicum, refers to teaching practice which is embedded in the teacher training programme itself. Such stints become more challenging for a teacher, for their teaching would be observed and assessed by a teacher educator. The purpose of this study was to…

  5. The seasonal characteristics of the breeze circulation at a coastal Mediterranean site in South Italy

    DEFF Research Database (Denmark)

    Federico, S.; Pasqualoni, L.; Sempreviva, Anna Maria;

    2010-01-01

    at about 600 m from the coastline in a flat open area at the foot of a mountain chain located in a region of complex orography. We study the seasonal behaviour of the sea-land breeze circulation by analysing two years of hourly data of wind speed and direction, temperature, radiation and relative humidity......We present a study on the characteristics of the sea breeze flow at a coastal site located in the centre of the Mediterranean basin at the southern tip of Italy. This study is finalized to add new data on breeze circulations over a narrow peninsula and present a unique experimental coastal site...... from a surface meteorological station, eighteen-months data from a wind profiler, and two-year data from the ECMWF analysis. Results show that breezes dominate the local circulation and play a major role for the local climate. They are modulated by the season, through the sea-land temperature...

  6. Temperature, comfort and pollution levels during heat waves and the role of sea breeze.

    Science.gov (United States)

    Papanastasiou, Dimitris K; Melas, Dimitris; Bartzanas, Thomas; Kittas, Constantinos

    2010-05-01

    During the summer of 2007 several Greek regions suffered periods of extreme heat, with midday temperatures of over 40 degrees C on several consecutive days. High temperatures were also recorded on the east coast of central Greece, where a complex sea breeze circulation system frequently develops. The more intense events occurred at the end of June and July. The highest temperatures were observed on 26 June and 25 July, while the sea breeze developed only on 25 July. Meteorological data collected at two sites-a coastal urban location and an inland suburban site that is not reached by the sea breeze flow-as well as pollution data collected at the urban site, were analysed in order to investigate the relationship between sea breeze development and the prevailing environmental conditions during these two heat wave events. The analysis revealed that sea breeze development affects temperature and pollution levels at the shoreline significantly, causing a decrease of approximately 4 degrees C from the maximum temperature value and an increase of approximately 30% in peak PM10 levels. Additionally, several stress indices were calculated in order to assess heat comfort conditions at the two sites. It was found that nocturnal comfort levels are determined mainly by the urban heat island effect, the intensity of which reaches up to 8 degrees C, while the applied indices do not demonstrate any significant daytime thermal stress relief due to sea breeze development.

  7. Scaling Characteristics of Developing Sea Breezes Simulated in a Water Tank

    Science.gov (United States)

    Yuan, Renmin; Sun, Jianning; Luo, Tao; Wu, Xuping

    2013-09-01

    Sea-breeze circulations in a stably stratified environment have been simulated in a water tank. The floor of the tank was divided into two halves representing land and sea; the land side was heated from the bottom of the tank, and the sea side was insulated by an underlying sponge slab. The temperature profiles over both land and sea sides, the land-sea temperature difference, and the horizontal temperature distributions were measured. Particle tracking velocimetry was applied to obtain the two-dimensional velocity field orthogonal to the coastline. It was shown that the overall flow consists of a closed circulation caused by the horizontal temperature difference between land and sea, and a strong updraft occurring at the sea-breeze front. The dimensionless governing parameters are calculated from the measurements and used to characterize the developing sea breezes. The analysis confirms the scaling laws for sea-breeze velocity and depth. The results indicate that the scaling characteristics of the sea-breeze translation speed during the developing period are different to those during the following maintaining period. A criterion for the onset of the sea breeze is proposed based on these results.

  8. An assessment of pre-service language teachers’ practicum observation forms: descriptive observation vs. critical observation

    OpenAIRE

    Genc, Bilal; Buyukkarci, Kagan

    2013-01-01

    Practicing the role of teacher and auditing/observing experienced teachers are essential parts of practicum studies of pre-service teachers. Regarding observation we differentiate between two kinds of practice: descriptive observation and critical observation. In this paper we reported on 38 pre-service teachers’ weekly practicum study observation reports of the classes they taught and audited over a twelve week period during their practicum study. The study examined the level of critical obs...

  9. Idealized WRF model sensitivity simulations of sea breeze types and their effects on offshore windfields

    Directory of Open Access Journals (Sweden)

    C. J. Steele

    2012-06-01

    Full Text Available The behaviour and characteristics of the marine component of sea breeze cells have received little attention relative to their onshore counterparts. Yet there is a growing interest and dependence on the offshore wind climate from, for example, a wind energy perspective. Using idealized model experiments, we investigate the sea breeze circulation at scales which approximate to those of the Southern North Sea, a region of major ongoing offshore wind farm development. We also contrast the scales and characteristics of the pure and the little known corkscrew and backdoor sea breeze types, where the type is pre-defined by the orientation of the synoptic scale flow relative to the shoreline. We find, crucially, that pure sea breezes, in contrast to corkscrew and backdoor types, can lead to substantial wind speed reductions offshore and that the addition of a second eastern coastline emphasises this effect through generation of offshore "calm zones". The offshore extent of all sea breeze types is found to be sensitive to both the influence of Coriolis acceleration and to the boundary layer scheme selected. These extents range, for example for a pure sea breeze produced in a 2 m s−1 offshore gradient wind, from 10 km to 40 km between the Mellor-Yamada-Nakanishi-Niino and the Yonsei State University schemes, respectively. The corkscrew type restricts the development of a backdoor sea breeze on the eastern coast and is also capable of traversing a 100 km offshore domain even under high gradient wind speed (>15 m s−1 conditions. Realistic variations in sea surface skin temperature during the sea breeze season do not significantly affect the circulation, suggesting that a thermal contrast is only needed as a precondition to the development of the sea breeze. We highlight how sea breeze impacts on circulation need to be considered in order to improve the accuracy of

  10. A case study of a distance-based public health nursing/community health nursing practicum.

    Science.gov (United States)

    Vandenhouten, Christine; Block, Derryl

    2005-01-01

    Facilitating a distance-based public health/community health nursing practicum for RN to BSN students posed challenges and opportunities. Challenges included time involved in arranging the practicum, relationship building with agencies and staff, communicating with students, and the need for flexible practicum scheduling. Exposure to practice models from across the nation allowed students to compare and contrast these public health nursing models. Programs planning to offer this type of course should consider faculty workload particularly during the semester prior to teaching the practicum.

  11. Developing critical literacy in a PARFOR teaching practicum module

    Directory of Open Access Journals (Sweden)

    William Mineo Tagata

    2016-06-01

    Full Text Available Abstract: This paper aims to describe a distance education experience that took place in a teaching practicum module of PARFOR (National Plan for Educating Primary and Secondary School Teachers at the Federal University of Uberlândia. With the aim of promoting a discussion about race and ethnicity in Brazil, the materials and activities of this module were devised in a critical literacy perspective (KNOBEL AND LANKSHEAR, 2011; COPE AND KALANTZIS, 2012. The paper begins with a discussion of relevant issues concerning learning and literacy in distance education today, and then moves on to a brief description of this teaching practicum module. After an analysis of two tasks from this module, we conclude by reflecting on some of the shortcomings regarding the implementation of the course, and suggesting ways in which they could be overcome.

  12. Numerical study of the evolution of a sea-breeze front under two environmental flows

    Science.gov (United States)

    Liang, Zhaoming; Wang, Donghai

    2015-06-01

    The evolution of a sea-breeze front (SBF) in parallel and offshore environmental flows was investigated by using high-resolution simulations of two SBF cases from the Bohai Bay region, China. The results show that the combination of a distinct vertical wind shear caused by the sea-breeze circulation with a neutral or slightly stable atmospheric stratification associated with the thermal inner boundary layer promoted the occurrence and maintenance of a Kelvin-Helmholtz billow (KHB). In a parallel environmental flow, the SBF evolved into a few connected segments because of the inhomogeneity of the sea-breeze direction and intensity as it penetrated inland. A significant upward vertical motion occurred at the two ends of the SBF segment owing to the sea-breeze convergence and was accelerated by the KHB. The KHB made a notable contribution to the intensity at the ends of the segment, whereas the intensity at the middle segment was primarily attributed to the convergence between the sea breeze and the parallel flow. In the offshore environmental flow, the clockwise rotation of the offshore flow varying with time increased the downstream convergence of the interface between the sea breeze and the offshore flow and pushed the downstream convergence zone to an orientation consistent with the offshore flow. The air parcels ascending from the downstream part of the SBF were continuously lifted by the downstream convergence zone during their advection, leading to a significant downstream development of the SBF. The significant upward vertical motion caused by the sea-breeze convergence behind the upstream end of the SBF was shifted to the upstream end of the SBF by the KHB, which enhanced the intensity of the upstream end of the SBF.

  13. Idealized WRF model sensitivity simulations of sea breeze types and their effects on offshore windfields

    Directory of Open Access Journals (Sweden)

    C. J. Steele

    2013-01-01

    Full Text Available The behaviour and characteristics of the marine component of sea breeze cells have received little attention relative to their onshore counterparts. Yet there is a growing interest and dependence on the offshore wind climate from, for example, a wind energy perspective. Using idealized model experiments, we investigate the sea breeze circulation at scales which approximate to those of the southern North Sea, a region of major ongoing offshore wind farm development. We also contrast the scales and characteristics of the pure and the little known corkscrew and backdoor sea breeze types, where the type is pre-defined by the orientation of the synoptic scale flow relative to the shoreline. We find, crucially, that pure sea breezes, in contrast to corkscrew and backdoor types, can lead to substantial wind speed reductions offshore and that the addition of a second eastern coastline emphasises this effect through generation of offshore "calm zones". The offshore extent of all sea breeze types is found to be sensitive to both the influence of Coriolis acceleration and to the boundary layer scheme selected. These extents range, for example for a pure sea breeze produced in a 2 m s−1 offshore gradient wind, from 0 km to 21 km between the Mellor-Yamada-Nakanishi-Niino and the Yonsei State University schemes respectively. The corkscrew type restricts the development of a backdoor sea breeze on the opposite coast and is also capable of traversing a 100 km offshore domain even under high along-shore gradient wind speed (>15 m s−1 conditions. Realistic variations in sea surface skin temperature and initializing vertical thermodynamic profile do not significantly alter the resulting circulation, though the strengths of the simulated sea breezes are modulated if the effective land-sea thermal contrast is altered. We highlight how sea breeze impacts on circulation need to be

  14. Breeze transients as triggers for the initiation of deep moist convection on mountains slopes

    Science.gov (United States)

    Giaiotti, D.; Stel, F.; Gladich, I.; Giacomini, A.

    2010-09-01

    Deep moist convection frequency is characterized by seasonal and diurnal cycles, related to the interplay between the different elements which force and sustain it: onset, instability, wind pattern. Besides the instability diurnal cycles, the low level triggers initiating the convective motions are considered responsible for the modulations of the cycle. In some areas, like in the southern side of the Alpine ridge, the onset and the reversal of breezes produce microscale areas of flow convergence, at the lower levels, due breezes transients and breezes interaction with the orography. This work presents a numerical analysis of the convection initiation generated by breezes transients. The Weather Research and Forecasting model (WRF) has been used to make simplified case studies and real cases simulations in which orography, solar radiation exposure and sea surface temperature variations are considered. General results support the thesis that the daily modulation of thunderstorm development is significantly accounted by the trigger effect of breezes transients, when synoptic winds are negligible of course. The results produced by the large set of simulations are compared with the climatological data of convective cells development in the Northeastern Italian region.

  15. Large-eddy simulation of sea breeze at an idealized peninsular site

    Science.gov (United States)

    Rizza, Umberto; Miglietta, Mario Marcello; Anabor, Vagner; Degrazia, Gervasio A.; Maldaner, Silvana

    2015-08-01

    A high-resolution large-eddy simulation (LES) has been performed to simulate a sea-breeze circulation over an idealized peninsular domain. The simulation is forced with the surface latent/sensible heat fluxes and the large-scale horizontal pressure gradient that are obtained from a mesoscale simulation. This methodology allows the investigation of the physical phenomena that are peculiar for a sea-breeze circulation and that generally require spatial resolution approximately equal to 100 m or less. Here, small-scale dynamical effects associated to these phenomena, i.e. the interaction between the sea-breeze front with the convective turbulence generated over-land, the formation of the zero-velocity layer, and the development of the Kelvin-Helmholtz billows, are investigated. Results from the present numerical study have revealed the formation of a zero-velocity layer that is initially near the ground then it rises to define a well-marked sea-breeze depth. Scaling analysis applied to the LES output fields reveals that during the phase of inland penetration the scaling laws for sea-breeze strength and depth have both a proportionality coefficient equal to 0.15.

  16. Lake breezes in the southern Great Lakes region and their influence during BAQS-Met 2007

    Directory of Open Access Journals (Sweden)

    D. M. L. Sills

    2011-02-01

    Full Text Available Mesoscale observations from the BAQS-Met field experiment during the summer of 2007 were integrated and manually analyzed in order to identify and characterize lake breezes in the southern Great Lakes region of North America, and assess their potential impact on air quality. Lake breezes were found to occur on 90% of study days, often occurring in conditions previously thought to impede their development. They affected all parts of the study region, including southwestern Ontario and nearby portions of southeast Michigan and northern Ohio, occasionally penetrating inland from 100 km to over 200 km. Occurrence rates and penetration distances were found to be higher than previously reported in the literature. This more accurate depiction of observed lake breezes allows a better understanding of their influence on the production and transport of pollutants in this region.

    The observational analyses were compared with output from subsequent runs of a high-resolution numerical weather prediction model. The model accurately predicted lake breeze occurrence in a variety of synoptic wind regimes, but selected cases showed substantial differences in the detailed timing and location of lake-breeze fronts, and with the initiation of deep moist convection. Knowledge of such strengths and weaknesses will assist with interpretation of results from air quality modelling driven by this meteorological model.

  17. Warm Breeze from the starboard bow: a new population of neutral helium in the heliosphere

    CERN Document Server

    Kubiak, M A; Sokół, J M; Swaczyna, P; Grzedzielski, S; Alexashov, D B; Izmodenov, V V; Moebius, E; Leonard, T; Fuselier, S A; Wurz, P; McComas, D J

    2014-01-01

    We investigate the signals from neutral He atoms observed from Earth orbit in 2010 by IBEX. The full He signal observed during the 2010 observation season can be explained as a superposition of pristine neutral interstellar He gas and an additional population of neutral He that we call the Warm Breeze. The Warm Breeze is approximately two-fold slower and 2.5 times warmer than the primary interstellar He population, and its density in front of the heliosphere is ~7% that of the neutral interstellar helium. The inflow direction of the Warm Breeze differs by ~19deg from the inflow direction of interstellar gas. The Warm Breeze seems a long-term feature of the heliospheric environment. It has not been detected earlier because it is strongly ionized inside the heliosphere, which brings it below the threshold of detection via pickup ion and heliospheric backscatter glow observations, as well as by the direct sampling of GAS/Ulysses. Possible sources for the Warm Breeze include (1) the secondary population of inters...

  18. Urban effects of Chennai on sea breeze induced convection and precipitation

    Indian Academy of Sciences (India)

    Matthew Simpson; Sethu Raman; R Suresh; U C Mohanty

    2008-12-01

    Doppler radar derived wind speed and direction profiles showed a well developed sea breeze circulation over the Chennai, India region on 28 June, 2003. Rainfall totals in excess of 100 mm resulted from convection along the sea breeze front. Inland propagation of the sea breeze front was observed in radar reflectivity imagery. High-resolution MM5 simulations were used to investigate the influence of Chennai urban land use on sea breeze initiated convection and precipitation. A comparison of observed and simulated 10 m wind speed and direction over Chennai showed that the model was able to simulate the timing and strength of the sea breeze. Urban effects are shown to increase the near surface air temperature over Chennai by 3.0 K during the early morning hours. The larger surface temperature gradient along the coast due to urban effects increased onshore flow by 4.0m s−1. Model sensitivity study revealed that precipitation totals were enhanced by 25 mm over a large region 150 km west of Chennai due to urban effects. Deficiency in model physics related to night-time forecasts are addressed.

  19. The Role of the Prepracticum in Lessening Student Teacher Stress: Student Teachers' Perceptions of Stress during Practicum

    Science.gov (United States)

    Danyluk, Patricia

    2013-01-01

    Research on the student teaching practicum indicates that it is a time of enormous stress. The purpose of this study was to gather information from student teachers regarding their perceptions of stress while in the midst of their practicum. The questions were designed to gather information that could be used to create a less stressful practicum.…

  20. The Role of the Prepracticum in Lessening Student Teacher Stress: Student Teachers' Perceptions of Stress during Practicum

    Science.gov (United States)

    Danyluk, Patricia

    2013-01-01

    Research on the student teaching practicum indicates that it is a time of enormous stress. The purpose of this study was to gather information from student teachers regarding their perceptions of stress while in the midst of their practicum. The questions were designed to gather information that could be used to create a less stressful practicum.…

  1. The Effectiveness of an Embedded Approach to Practicum Experiences in Educational Leadership: Program Candidates' Perspectives

    Science.gov (United States)

    Chandler, Mary; Chan, Tak Cheung; Jiang, Binbin

    2013-01-01

    This study examined how effective an embedded practicum experience in an educational leadership program in a Southeastern University is in serving the purpose of preparing educational leaders to meet future challenges. Findings of this study confirm practicum areas that met the educational demands and highlight areas that need improvement to…

  2. Supporting Inclusive Practicum Experiences for International Students across the Social Sciences: Building Industry Capacity

    Science.gov (United States)

    Felton, Kathleen; Harrison, Gai

    2017-01-01

    Practicum experiences are critical learning environments for developing requisite skills, knowledge, behaviours and attitudes across the professions. Evidence suggests that international students in professional social and behavioural science programs struggle across a number of dimensions while on practicum. Key issues for these students coalesce…

  3. Influences on Preservice Writing Instruction during the Secondary English as an Additional Language Practicum in Australia

    Science.gov (United States)

    Nguyen, Minh Hue; Brown, Jill

    2016-01-01

    Informed by a sociocultural perspective on second language teacher education, the present qualitative study investigates three preservice teachers' (PSTs) writing instruction during the English as an Additional Language (EAL) practicum in Australian secondary schools in relation to the multidimensional context of the practicum and the PSTs'…

  4. Do We Need More "Doing" Activities or "Thinking" Activities in the Field Practicum?

    Science.gov (United States)

    Lee, Mingun; Fortune, Anne E.

    2013-01-01

    How do MSW students learn new professional skills in the field practicum? Does students' reflection affect the use of other learning activities during the field practicum? Students in field practica participate in activities that involve observation, doing (participatory), and conceptual linkage. In this study of MSW students, conceptual…

  5. A Database Practicum for Teaching Database Administration and Software Development at Regis University

    Science.gov (United States)

    Mason, Robert T.

    2013-01-01

    This research paper compares a database practicum at the Regis University College for Professional Studies (CPS) with technology oriented practicums at other universities. Successful andragogy for technology courses can motivate students to develop a genuine interest in the subject, share their knowledge with peers and can inspire students to…

  6. Early Childhood Practicum Students' Professional Growth in the USA: Areas of Confidence and Concern

    Science.gov (United States)

    Wee, Su-Jeong; Weber, Elsa K.; Park, Soyeon

    2014-01-01

    This research examines specific areas of confidence and concern as expressed by 40 American undergraduate early childhood students on a practicum (supervised field-based internships); if their beliefs changed over the course of their practicum, and if prior teaching experience had an impact on their confidence levels. Areas of confidence and…

  7. Developing Teaching Skills through the School Practicum in Turkey: A Metasynthesis Study

    Science.gov (United States)

    Tas, Mükerrem Akbulut; Karabay, Aysegül

    2016-01-01

    Using a metasynthesis approach, this study examined general teaching skills in previous studies on school practicum. The results and suggestions from 53 qualitative primary research studies that focused on school practicum in Turkey were reviewed. Data were collected using document analysis and content analysis using the NVivo10 programme. The…

  8. Between Signification and Illumination: Unfolding Understandings of an A/r/tographical Turn on Practicum

    Science.gov (United States)

    Carter, Mindy R.; Irwin, Rita L.

    2014-01-01

    School associates (SA's), or cooperating teachers (CT's), have arguably been one of the most powerful influences on the teacher candidate's (TC) pre-service experience. For this reason, most studies about the practicum have focused on this relationship. However, while observing one visual art student's practicum as her Faculty Advisor (FA) for the…

  9. Examining the Practicum Experience to Increase Counseling Students' Self-Efficacy

    Science.gov (United States)

    Ikonomopoulos, James; Vela, Javier Cavazos; Smith, Wayne D.; Dell'Aquila, Julia

    2016-01-01

    Counseling graduate students may begin practicum with low self-efficacy regarding their counseling abilities and skills. In the current study, we implemented a small-series (N = 11) single-case research design to assess the effectiveness of the practicum experience to increase counseling students' self-efficacy. Analysis of participants' scores on…

  10. Research Practicum in Rehabilitation Counselor Education: Learning Research through Hands-on Experience

    Science.gov (United States)

    Miller, Susan M.; Rintelmann, Kristen

    2007-01-01

    The purpose of this paper is to discuss the research thesis as an educational tool and to propose the research practicum as an alternative to the thesis in rehabilitation counselor education programs. The research practicum has the potential to become an important learning opportunity which will provide rehabilitation counseling students with…

  11. Unveiling Pre-Service Teachers' Attitudes toward Teaching: The Role of Pedagogical Practicums

    Science.gov (United States)

    Morales Cortés, Yimer Andrés

    2016-01-01

    This article reports a research developed at Universidad Pedagógica y Tecnológica de Colombia with a group of pre-service teachers that was immersed in an English teaching practicum. The main purpose of this inquiry was to find out the role that practicum exerted on novice teachers' attitudes towards teaching. Data were collected through…

  12. An Evaluation Study on the Educational Value of Teaching Practicum in Secondary Schools

    Science.gov (United States)

    Baek, Sun-Geun; Ham, Eun Hye

    2009-01-01

    The purpose of this study is to evaluate the educational value of teaching practicum in secondary schools. For this purpose, on the basis of literature review and interviews, three evaluation criteria for measuring educational value of teaching practicum are constructed as follows: (1) practical teaching competence, (2) readiness for teacher, and…

  13. "Unruly Pupils" in Pre-Service English Language Teachers' Teaching Practicum Experiences

    Science.gov (United States)

    Gao, Xuesong; Benson, Phil

    2012-01-01

    The teaching practicum is a pivotal event for pre-service teachers to experience the transition from being students to being teachers. This paper examines the emergence of "unruly pupils" as a central concern for pre-service English language teachers in their teaching practicum. The inquiry relates the pre-service teachers' perceived challenge of…

  14. From Learner to Teacher: Practice, Language, and Identity in a Teaching Practicum

    Science.gov (United States)

    Trent, John

    2013-01-01

    This paper reports on a qualitative study that investigated the lived experiences of a group of pre-service English language teachers during a teaching practicum in Hong Kong. Multiple, in-depth interviews with student teachers were conducted during a 6-week practicum to understand the students' experiences of becoming teachers. A…

  15. Local and Global--Conflicting Perspectives? The Place of Overseas Practicum in Preservice Teacher Education

    Science.gov (United States)

    Cruickshank, Kenneth; Westbrook, Ros

    2013-01-01

    International practicum is disappearing from teacher education programs with the increasing pressures for "local experience". International practicum is seen as too different from local contexts to develop preservice teachers to meet professional standards. This study explores the teaching development of a group of 24 preservice teachers from a…

  16. Beginner Pre-Service Special Education Teachers' Learning Experience during Practicum

    Science.gov (United States)

    Nonis, Karen P.; Jernice, Tan Sing Yee

    2011-01-01

    In Singapore, training for pre-service special education (PSSE) teachers is supported by a ten-week special education teaching (SET) practicum process in special school setting. In the first four weeks of SET practicum PSSE teachers are familiarized with their pupils, class routines, school culture and administrative processes within the school.…

  17. Issues and Concerns Faced by Undergraduate Language Student Teachers during Teaching Practicum Experiences

    Science.gov (United States)

    Ali, Mohd Sofi; Othman, Abdul Jalil; Karim, Abdul Faruk Abdul

    2014-01-01

    This study examined specific issues and concerns faced by Bachelor of Education student teachers majoring in Language and Literature during their 12-week teaching practicum experience. Specifically, three main areas of concerns were examined. They were: (1) specific issues and concerns related to the implementation of teaching practicum faced by…

  18. The Teaching Practicum as a Locus of Multi-Leveled, School-Based Transformation

    Science.gov (United States)

    El Kadri, Michele Salles; Roth, Wolff-Michael

    2015-01-01

    The teaching practicum is often considered as a compulsory activity for enculturating new members into the teacher community by providing opportunities to experience teaching in action. However, the practicum is rarely conceptualized in terms of its transformative potential. In this study, we report the results of a two-year ethnography study of a…

  19. Student Teachers' Views of Practicums (Teacher Training Placements) in Turkish and English Contexts: A Comparative Study

    Science.gov (United States)

    Busher, Hugh; Gündüz, Müge; Cakmak, Melek; Lawson, Tony

    2015-01-01

    How student teachers experience their transformation into serving teachers in the liminal social spaces of the school-based practicum (teaching practice) is of key importance to them, their future students and their educators. The practicum is a challenging experience for student teachers, even with help from university and school-based mentors,…

  20. Early Childhood Practicum Students' Professional Growth in the USA: Areas of Confidence and Concern

    Science.gov (United States)

    Wee, Su-Jeong; Weber, Elsa K.; Park, Soyeon

    2014-01-01

    This research examines specific areas of confidence and concern as expressed by 40 American undergraduate early childhood students on a practicum (supervised field-based internships); if their beliefs changed over the course of their practicum, and if prior teaching experience had an impact on their confidence levels. Areas of confidence and…

  1. The impact of land and sea surface variations on the Delaware sea breeze at local scales

    Science.gov (United States)

    Hughes, Christopher P.

    The summertime climate of coastal Delaware is greatly influenced by the intensity, frequency, and location of the local sea breeze circulation. Sea breeze induced changes in temperature, humidity, wind speed, and precipitation influence many aspects of Delaware's economy by affecting tourism, farming, air pollution density, energy usage, and the strength, and persistence of Delaware's wind resource. The sea breeze front can develop offshore or along the coastline and often creates a near surface thermal gradient in excess of 5°C. The purpose of this dissertation is to investigate the dynamics of the Delaware sea breeze with a focus on the immediate coastline using observed and modeled components, both at high resolutions (~200m). The Weather Research and Forecasting model (version 3.5) was employed over southern Delaware with 5 domains (4 levels of nesting), with resolutions ranging from 18km to 222m, for June 2013 to investigate the sensitivity of the sea breeze to land and sea surface variations. The land surface was modified in the model to improve the resolution, which led to the addition of land surface along the coastline and accounted for recent urban development. Nine-day composites of satellite sea surface temperatures were ingested into the model and an in-house SST forcing dataset was developed to account for spatial SST variation within the inland bays. Simulations, which include the modified land surface, introduce a distinct secondary atmospheric circulation across the coastline of Rehoboth Bay when synoptic offshore wind flow is weak. Model runs using high spatial- and temporal-resolution satellite sea surface temperatures over the ocean indicate that the sea breeze landfall time is sensitive to the SST when the circulation develops offshore. During the summer of 2013 a field campaign was conducted in the coastal locations of Rehoboth Beach, DE and Cape Henlopen, DE. At each location, a series of eleven small, autonomous thermo-sensors (i

  2. Breezes Along the Coast of Tamaulipas, Northeastern Mexico: Contribution to the Wind Energy Potencial

    Science.gov (United States)

    Orozco, J. M.; Rivas, D.

    2012-12-01

    The near-surface wind along the coast of northeastern Mexico and western Gulf of Mexico, with emphasis on the breeze regime, is characterized. Wind data from the North American Regional Reanalysis (NARR) for the period from 2000 to 2010 are used, which are validated by comparison with surface in-situ observations (weather stations). The validation shows a good agreement between the NARR product and the observations. The preliminary results show that the diurnal frequency associated with breezes has a significant contribution to the variability of the wind in the study area. This suggests that the breeze regime can be important for the wind power generation, and given the extensive coastal plain of Tamaulipas, the implementation of electricity-generation prototypes in the area is possible.

  3. 78 FR 62300 - Prairie Breeze Wind Energy LLC; Supplemental Notice That Initial Market-Based Rate Filing...

    Science.gov (United States)

    2013-10-15

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Prairie Breeze Wind Energy LLC; Supplemental Notice That Initial Market... in the above-referenced proceeding, of Prairie Breeze Wind Energy LLC's application for...

  4. Land Breeze and Thermals: A Scale Threshold to Distinguish Their Effects

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    Land breeze is a type of mesoscale circulation developed due to thermal forcing over a heterogeneous landscape. It can contribute to atmospheric dynamic and hydrologic processes through affecting heat and water fluxes on the land-atmosphere interface and generating shallow convective precipitation. If the scale of the landscape heterogeneity is smaller than a certain size, however, the resulting land breeze becomes weak and becomes mixed up with other thermal convections like thermals. This study seeks to identify a scale threshold to distinguish the effects between land breeze and thermals. Two-dimensional simulations were performed with the Regional Atmospheric Modeling System (RAMS) to simulate thermals and land breeze. Their horizontal scale features were analyzed using the wavelet transform. The thermals developed over a homogeneous landscape under dry or wet conditions have an initial scale of 2-5 km during their early stage of development. The scale jumps to 10-15 km when condensation occurs. The solution of an analytical model indicates that the reduced degree of atmospheric instability due to the release of condensation potential heat could be one of the contributing factors for the increase in scale.The land breeze, on the other hand, has a major scale identical to the size of the landscape heterogeneity throughout various stages of development. The results suggest that the effects of land breeze can be clearly distinguished from those of thermals only if the size of the landscape heterogeneity is larger than the scale threshold of about 5 km for dry atmospheric processes or about 15 km for moist ones.

  5. Impact of sea breeze on wind-seas off Goa, west coast of India

    Indian Academy of Sciences (India)

    S Neetu; Satish Shetye; P Chandramohan

    2006-04-01

    After withdrawal of the Indian Summer Monsoon and until onset of the next monsoon,i.e.,roughly during November-May, winds in the coastal regions of India are dominated by sea breeze.It has an impact on the daily cycle of the sea state near the coast.The impact is quite significant when large scale winds are weak.During one such event,1 –15 April 1997,a Datawell directional waverider buoy was deployed in 23 m water depth off Goa,west coast of India.Twenty-minute averaged spectra,collected once every three hours,show that the spectrum of sea-breeze-related ‘wind-seas’ peaked at 0.23 ± 0.05 Hz. These wind-seas were well separated from swells of frequencies less than 0.15 Hz.The TMA spectrum (Bouws et al 1985) matched the observed seas spectra very well when the sea-breeze was active and the fetch corresponding to equilibrium spectrum was found to be 77 ± 43 km during such occasions. We emphasize on the diurnal cycle of sea-breeze-related sea off the coast of Goa and write an equation for the energy of the seas as a function of the local wind.

  6. Impact of Bay-Breeze Circulations on Surface Air Quality and Boundary Layer Export

    Science.gov (United States)

    Loughner, Christopher P.; Tzortziou, Maria; Follette-Cook, Melanie; Pickering, Kenneth E.; Goldberg, Daniel; Satam, Chinmay; Weinheimer, Andrew; Crawford, James H.; Knapp, David J.; Montzka, Denise D.; Diskin, Glenn S.; Dickerson, Russell R.

    2014-01-01

    Meteorological and air-quality model simulations are analyzed alongside observations to investigate the role of the Chesapeake Bay breeze on surface air quality, pollutant transport, and boundary layer venting. A case study was conducted to understand why a particular day was the only one during an 11-day ship-based field campaign on which surface ozone was not elevated in concentration over the Chesapeake Bay relative to the closest upwind site and why high ozone concentrations were observed aloft by in situ aircraft observations. Results show that southerly winds during the overnight and early-morning hours prevented the advection of air pollutants from the Washington, D.C., and Baltimore, Maryland, metropolitan areas over the surface waters of the bay. A strong and prolonged bay breeze developed during the late morning and early afternoon along the western coastline of the bay. The strength and duration of the bay breeze allowed pollutants to converge, resulting in high concentrations locally near the bay-breeze front within the Baltimore metropolitan area, where they were then lofted to the top of the planetary boundary layer (PBL). Near the top of the PBL, these pollutants were horizontally advected to a region with lower PBL heights, resulting in pollution transport out of the boundary layer and into the free troposphere. This elevated layer of air pollution aloft was transported downwind into New England by early the following morning where it likely mixed down to the surface, affecting air quality as the boundary layer grew.

  7. The Effects of Highly Detailed Urban Roughness Parameters on a Sea-Breeze Numerical Simulation

    Science.gov (United States)

    Varquez, Alvin Christopher G.; Nakayoshi, Makoto; Kanda, Manabu

    2015-03-01

    We consider the effects of detailed urban roughness parameters on a sea-breeze simulation. An urban roughness database, constructed using a new aerodynamic parametrization derived from large-eddy simulations, was incorporated as a surface boundary condition in the advanced Weather Research and Forecasting model. The zero-plane displacement and aerodynamic roughness length at several densely built-up urban grids were three times larger than conventional values due to the consideration of building-height variability. A comparison between simulations from the modified model and its default version, which uses uniform roughness parameters within a conventional method, was conducted for a 2-month period during summer. Results showed a significant improvement in the simulation of surface wind speed but not with temperature. From the 2-month study period, a day with an evident sea-breeze penetration was selected and simulated at higher temporal resolution. Sea-breeze penetration weakened and was more delayed over urbanized areas. The slow sea-breeze penetration also lessened heat advection downwind allowing stronger turbulent mixing and a deeper boundary layer above urban areas. Horizontal wind-speed reduction due to the increased urban surface drag reached heights of several hundreds of metres due to the strong convection.

  8. Idealised numerical simulations of aerodynamic roughness length effects on sea breeze characteristics

    Energy Technology Data Exchange (ETDEWEB)

    Prtenjak, M.T. [Zagreb Univ. (Croatia). Andrija Mohorovicic Geophysical Inst.

    2002-07-01

    A two-dimensional hydrostatic meso-{gamma}-scale model was used to study possible effects of a step change in roughness on the daytime sea breeze. Idealised numerical simulations with the length of aerodynamical roughness (z{sub 0}) ranging from 0.05 m to 1.0 m and by an increase of 0.05 m in all land grid points were made. Two z{sub 0} effects could be pointed out: an increase in the mixing process and a reduction in the wind speeds in the surface layer. An increase of both heights and magnitudes of the sea breeze circulation, caused by a vertical extension of the turbulent field, followed a faster inland penetration of the sea breeze. The second effect resulting from a successive increase in z{sub 0} values was a retardation of the sea breeze front near the ground, visible in its slope. This effect allowed the already faster inland penetration of the marine air high above the land. (orig.)

  9. Characteristics of Sea Breeze Front Development with Various Synoptic Conditions and Its Impact on Lower Troposphere Ozone Formation

    Institute of Scientific and Technical Information of China (English)

    Hyo-Eun JI; Soon-Hwan LEE; Hwa-Woon LEE

    2013-01-01

    To examine the correlation between the sizes of sea breeze fronts and pollutants under the influence of synoptic fields,a numerical simulation was conducted in the southeast coastal area of the Korean Peninsula,where relatively high concentrations of pollutants occur because of the presence of various kinds of industrial developments.Sea breeze and sea breeze front days during the period 2005-09 were identified using wind profiler data and,according to the results,the number of days were 72 and 53,respectively.When synoptic forcing was weak,sea breeze fronts moved fast both in horizontal fields and in terms of wind velocity,while in thc case of strong synoptic forcing,sea breeze fronts remained at the coast or moved slowly due to strong opposing flows.In this case,the sea breeze front development function and horizontal potential temperature difference were larger than with weak synoptic forcing.The ozone concentration that moves together with sea breeze fronts was also formed along the frontal surfaces.Ozone advection and diffusion in the case of strong synoptic forcing was suppressed at the frontal surface and the concentration gradient was large.The vertical distribution of ozone was very low due to the Thermal Internal Boundary Layer (TIBL) being low.

  10. Photovoltaic at Hollywood and Desert Breeze Recreational Centers

    Energy Technology Data Exchange (ETDEWEB)

    Ammerman, Shane [Clark County Comprehensive Planning Department, NV (United States)

    2015-09-24

    Executive Summary Renewable Energy Initiatives for Clark County Parks and Recreation Solar Project DOE grant # DE-EE0003180 In accordance with the goals of the Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy for promoting solar energy as clean, carbon-free and cost-effective, the County believed that a recreational center was an ideal place to promote solar energy technologies to the public. This project included the construction of solar electricity generation facilities (40kW) at two Clark County facility sites, Desert Breeze Recreational Center and Hollywood Recreational Center, with educational kiosks and Green Boxes for classroom instruction. The major objectives and goals of this Solar Project include demonstration of state of the art technologies for the generation of electricity from solar technology and the creation of an informative and educational tool in regards to the benefits and process of generating alternative energy. Clark County partnered with Anne Johnson (design architect/consultant), Affiliated Engineers Inc. (AEI), Desert Research Institute (DRI), and Morse Electric. The latest photovoltaic technologies were used in the project to help create the greatest expected energy savings for60443 each recreational center. This coupled with the data created from the monitoring system will help Clark County and NREL further understand the real time outputs from the system. The educational portion created with AEI and DRI incorporates material for all ages with a focus on K - 12. The AEI component is an animated story telling the fundamentals of how sunlight is turned into electricity and DRI‘s creation of Solar Green Boxes brings environmental education into the classroom. In addition to the educational component for the public, the energy that is created through the photovoltaic system also translates into saved money and health benefits for the general public. This project has helped Clark County to further add to its own

  11. Unveiling Pre-Service Teachers’ Attitudes Toward Teaching: The Role of Pedagogical Practicums

    Directory of Open Access Journals (Sweden)

    Yimer Andrés Morales Cortés

    2016-07-01

    Full Text Available This article reports a research developed at Universidad Pedagógica y Tecnológica de Colombia with a group of pre-service teachers that was immersed in an English teaching practicum. The main purpose of this inquiry was to find out the role that practicum exerted on novice teachers’ attitudes towards teaching. Data were collected through interviews, questionnaires, verbal reports, and artifacts. The results evidenced the English practicum provided the teachers being trained opportunities to consider what teaching entails. Thus, the participants were able to reflect, develop awareness, positive attitudes, and satisfaction towards their teaching practice.

  12. Nearshore Coastal Dynamics on a Sea-Breeze Dominated Micro-Tidal Beach (NCSAL)

    Science.gov (United States)

    Torres-Freyermuth, A.; Puleo, J. A.; Ruiz de Alegría-Arzaburu, A.; Figlus, J.; Mendoza, T.; Pintado-Patino, J. C.; Pieterse, A.; Chardon-Maldonado, P.; DiCosmo, N. R.; Wellman, N.; Garcia-Nava, H.; Palemón-Arcos, L.; Roberts, T.; López-González, J.; Bravo, M.; Ojeda, E.; Medellín, G.; Appendini, C. M.; Figueroa, B.; González-Leija, M.; Enriquez, C.; Pedrozo-Acuña, A.; Salles, P.

    2014-12-01

    A comprehensive field experiment devoted to the study of coastal processes on a micro-tidal beach was conducted from March 30th to April 12th 2014 in Sisal, Yucatán México. Wave conditions in the study area are controlled by local (i.e., sea-breezes) and meso-scale (i.e., Nortes) meteorological events. Simultaneous measurements of waves, tides, winds, currents, sediment transport, runup, and beach morphology were obtained in this experiment. Very dense nearshore instrumentation arrays allow us the study of the cross-/along- shore variability of surf/swash zone dynamics during different forcing conditions. Strong sea-breeze wind events produced a diurnal cycle with a maximum wind speed of 14 m/s. The persistent sea-breeze system forces small-amplitude (Hs1 m) Norte event, lasting 48 hours, reached the coast on April 8th generating a long-period swell (Tp>10 s) arriving from the NNW. This event induced an eastward net sediment transport across a wide surf zone. However, long-term observations of sand impoundment at a groin located near the study area suggests that the net sediment transport in the northern Yucatan peninsula is controlled by sea-breeze events and hence swash zone dynamics play an important role in the net sediment budget of this region. A comparative study of surf and swash zone dynamics during both sea-breeze and Norte events will be presented. The Institute of Engineering of UNAM, throughout an International Collaborative Project with the University of Delaware, and CONACYT (CB-167692) provided financial support. The first author acknowledges ONR Global for providing financial support throughout the Visiting Scientist Program.

  13. From burden to spritual growth: Korean students' experience in a spiritual care practicum.

    Science.gov (United States)

    So, Woi Sook; Shin, Hye Sook

    2011-01-01

    Little is known about how students learn spiritual caregiving. A phenomenological study was conducted to examine the experience of Korean nursing students in a spiritual care practicum. Interviews with 12 students were analyzed and organized into 40 themes, 17 theme clusters, and five categories describing their experience in the practicum. Students initially experienced burdens and helplessness,followed by improvement of coping skills, self-reflection, and spiritual growth.

  14. Photovoltaic at Hollywood and Desert Breeze Recreational Centers

    Energy Technology Data Exchange (ETDEWEB)

    Ammerman, Shane [Clark County Comprehensive Planning Department, NV (United States)

    2015-09-24

    Executive Summary Renewable Energy Initiatives for Clark County Parks and Recreation Solar Project DOE grant # DE-EE0003180 In accordance with the goals of the Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy for promoting solar energy as clean, carbon-free and cost-effective, the County believed that a recreational center was an ideal place to promote solar energy technologies to the public. This project included the construction of solar electricity generation facilities (40kW) at two Clark County facility sites, Desert Breeze Recreational Center and Hollywood Recreational Center, with educational kiosks and Green Boxes for classroom instruction. The major objectives and goals of this Solar Project include demonstration of state of the art technologies for the generation of electricity from solar technology and the creation of an informative and educational tool in regards to the benefits and process of generating alternative energy. Clark County partnered with Anne Johnson (design architect/consultant), Affiliated Engineers Inc. (AEI), Desert Research Institute (DRI), and Morse Electric. The latest photovoltaic technologies were used in the project to help create the greatest expected energy savings for60443 each recreational center. This coupled with the data created from the monitoring system will help Clark County and NREL further understand the real time outputs from the system. The educational portion created with AEI and DRI incorporates material for all ages with a focus on K - 12. The AEI component is an animated story telling the fundamentals of how sunlight is turned into electricity and DRI‘s creation of Solar Green Boxes brings environmental education into the classroom. In addition to the educational component for the public, the energy that is created through the photovoltaic system also translates into saved money and health benefits for the general public. This project has helped Clark County to further add to its own

  15. A case study of sea breeze blocking regulated by sea surface temperature along the English south coast

    Directory of Open Access Journals (Sweden)

    J. K. Sweeney

    2013-09-01

    Full Text Available The sensitivity of sea breeze structure to sea surface temperature (SST and coastal orography is investigated in convection-permitting Met Office Unified Model simulations of a case study along the south coast of England. Changes in SST of 1 K are shown to significantly modify the structure of the sea breeze. On the day of the case study the sea breeze was partially blocked by coastal orography, particularly within Lyme Bay. The extent to which the flow is blocked depends strongly on the static stability of the marine boundary layer. In experiments with colder SST, the marine boundary layer is more stable, and the degree of blocking is more pronounced. The implications of prescribing fixed SST from climatology in numerical weather prediction model forecasts of the sea breeze are discussed.

  16. Quality improvement on chemistry practicum courses through implementation of 5E learning cycle

    Science.gov (United States)

    Merdekawati, Krisna

    2017-03-01

    Two of bachelor of chemical education's competences are having practical skills and mastering chemistry material. Practicum courses are organized to support the competency achievement. Based on observation and evaluation, many problems were found in the implementation of practicum courses. Preliminary study indicated that 5E Learning Cycle can be used as an alternative solution in order to improve the quality of chemistry practicum course. The 5E Learning Cycle can provide positive influence on the achievement of the competence, laboratory skills, and students' understanding. The aim of the research was to describe the feasibility of implementation of 5E Learning Cycle on chemistry practicum courses. The research was based on phenomenology method in qualitative approach. The participants of the research were 5 person of chemistry laboratory manager (lecturers at chemistry and chemistry education department). They concluded that the 5E Learning Cycle could be implemented to improve the quality of the chemistry practicum courses. Practicum guides and assistant competences were organized to support the implementation of 5E Learning Cycle. It needed training for assistants to understand and implement in the stages of 5E Learning Cycle. Preparation of practical guidelines referred to the stages of 5E Learning Cycle, started with the introduction of contextual and applicable materials, then followed with work procedures that accommodate the stage of engagement, exploration, explanation, extension, and evaluation

  17. NUMERICAL EXPERIMENT ON THE EFFECT OF URBANIZATION UPON SUMMER LAND-SEA BREEZES IN THE COASTLAND OF GUANGXI

    Institute of Scientific and Technical Information of China (English)

    WEN Wei-jun; SHEN Tong-li; DING Zhi-ying; SONG Jie-hui

    2010-01-01

    The 2003-2006 observations were utilized to analyze the surface characteristics of summer land-sea breezes along the coastland of Guangxi and the Weather Research and Forecast model was applied to simulate the breeze structure on August 1-2,2006.Results show that 1)the intensity and distributions of the breezes reproduced from improved urban underlying surface were close to observations.In the daytime the coastwise urban band was a convergent belt of sea breeze,corresponding to the centers of torrential rains; in the nighttime hours the surface of the Gulf of Tonkin(the Vietnamese name)or the Northern Bay(the Chinese name)acted as a convergent zone of land breezes,likely to produce convectivecloud cluster; 2)the experiment on urbanization showed the heat island effect enhancing(weakening)the sea(land)breeze development.Furthermore,the heat island effect mitigated the atmospheric cooling viaradiation over the cities in the night,weakening sinking motion correspondingly,thereby suppressing the dominant factor responsible for the steady development of temperature inversion.As a result,the inversion vigor was reduced greatly,but nevertheless no strong effect of the decreased subsidence was found upon the inversion height.

  18. A climatological study of sea breeze clouds in the southeast of the Iberian Peninsula (Alicante, Spain)

    Energy Technology Data Exchange (ETDEWEB)

    Azorin-Molina, C. [Grupo de Climatologia, Universidad de Barcelona, Barcelona, Cataluna (Spain)]. E-mail: cazorin@ceam.es; Sanchez-Lorenzo, A. [Grupo de Climatologia, Universidad de Barcelona, Barcelona, Cataluna (Spain); Calbo, J. [Grupo de Fisica Ambiental, Universidad de Girona, Campus Montilivi, Cataluna (Spain)

    2009-01-15

    Sea breezes blow under anticyclonic weather types, weak surface pressure gradients, intense solar radiation and relatively cloud-free skies. Generally, total cloud cover must be less than 4/8 in order to cause a thermal and pressure difference between land and sea air which allows the development of this local wind circulation. However, many numerical and observational studies have analyzed the ability of sea breezes to generate clouds in the convective internal boundary layer and in the sea breeze convergence zone. Accordingly, the aim of this study is to statistically analyze the impact of sea breezes on cloud types in the convective internal boundary layer and in the sea breeze convergence zone. The study area is located in the southeast of the Iberian Peninsula (province of Alicante, Spain) and the survey corresponds to a 6-yr study period (2000-2005). This climatological study is mainly based on surface cloud observations at the Alicante-Ciudad Jardin station (central coastal plain) and on an extensive cloud observation field campaign at the Villena-Ciudad station (Prebetic mountain ranges) over a 3-yr study period (2003-2005). The results confirm the hypothesis that the effect of sea breezes on cloud genera is to increase the frequency of low (Stratus) and convective (Cumulus) clouds. Sea breezes trigger the formation of thunderstorm clouds (Cumulonimbus) at the sea breeze convergence zone, which also have a secondary impact on high-level (Cirrus, Cirrocumulus, Cirrostratus), medium-level (Altostratus, Altocumulus) and low-level clouds (Stratus, Stratocumulus, Nimbostratus) associated with the Cumulonimbus clouds (e.g., Cumulonimbus anvil). [Spanish] Las brisas marinas soplan bajo tipos de tiempo anticiclonicos, debiles gradientes de presion atmosferica, radiacion solar intensa y cielos practicamente despejados. Por lo general, la cobertura nubosa total debe ser inferior a 4/8 para que se genere un diferencial termico y de presion entre el aire sobre las

  19. Reducibility mill scale industrial waste via coke breeze at 850-950ºC

    Directory of Open Access Journals (Sweden)

    Gaballah N.M.

    2015-01-01

    Full Text Available Mill scale is a very attractive industrial waste due to its elevated iron content (about = 69.33% Fe besides being suiTab. for direct recycling to the blast furnace via sintering plant. In this paper the characteristics of raw materials and the briquettes produced from this mill scale were studied by different methods of analyses. The produced briquettes were reduced with different amounts of coke breeze at varying temperatures, and the reduction kinetics was determined. The activation energy of this reaction ≈ 61.5 kJ/mole for reduction of mill scale with coke breeze in the form of briquettes with 2% molasses where the chemical reaction interface model is applicable.

  20. The Relationship Between Sea Breeze Forcing and HF Radar-Derived Surface Currents in Monterey Bay

    Science.gov (United States)

    2014-06-01

    and Mr. Richard Lind, to whom I owe great appreciation. I would like to thank Mr. Mike Cook again for making me an expert in Matlab . He also assisted...such as aircraft, lidar , radiosondes and wind profilers, have been used over the years to measure the horizontal and vertical movement of sea breeze...useful, and it was made easy due to the existing MATLAB HFR_Progs toolbox. Using harmonic analysis for winds was not a common idea, but it provided

  1. Investigation of sea-breeze convergence in Salento Peninsula (southeastern Italy)

    Science.gov (United States)

    Comin, Alcimoni Nelci; Miglietta, Mario Marcello; Rizza, Umberto; Acevedo, Otavio Costa; Degrazia, Gervasio Annes

    2015-06-01

    The frequency, the location and the characteristics of convective rainfall events induced by the convergence of different sea breeze systems on a Mediterranean peninsula (Salento, in southeastern Italy) are analyzed. Such events have been studied considering satellite/radar images and output fields from two Limited Area Models in the summer period of 2011-2013. A total of 20 days have been detected in which the precipitation due to sea-breeze convergence was clearly observed in satellite and radar images. The synoptic conditions associated with these events have been identified considering the averages of some relevant meteorological parameters in the selected days and the anomaly with respect to the climate. The presence of a cold trough in the central Mediterranean basin appears as a fundamental ingredient for the occurrence of sea breeze convergence and associated precipitation. High-resolution simulations with two state-of-art numerical models have revealed that both of them are generally able to simulate a convergence pattern correctly, apart from a couple of cases for each model. The higher rainfall amounts occur with weak synoptic wind, and weak-to-moderate values of Convective Available Potential Energy (CAPE). When the synoptic wind is of moderate intensity, the region of convergence moves toward the Adriatic coast for a prevailing southerly component, and toward the Ionian coast for a prevailing northerly component. On the opposite, the skin sea surface temperature is relatively uniform and the difference between the Ionian and the Adriatic Seas, surrounding the peninsula on the east and west side, is generally smaller than 1 K, having only a marginal effect on the sea breeze patterns. Similarly, the value of CAPE before the occurrence of rainfall has low prognostic value. The results shows that limited area models with a grid spacing of few km appear as appropriate tools for the simulation for such relatively small scale phenomena.

  2. A sea breeze induced thunderstorm over an inland station over Indian South Peninsula - A case study

    Science.gov (United States)

    Bhate, Jyoti; Kesarkar, Amit P.; Karipot, Anandakumar; Bala Subrahamanyam, D.; Rajasekhar, M.; Sathiyamoorthy, V.; Kishtawal, C. M.

    2016-10-01

    The dynamic interaction of sea breeze with the prevailing synoptic flows can give rise to meteorological conditions conducive for the occurrence to the thunderstorms over coastal and adjoining regions. Here, we present a rare case study of the genesis of the thunderstorm that occurred on 4th May 2011 at 1500Z over Gadanki (13.5°N, 79.2°E), one of the tropical inland stations (100 km) near to the east coast of the Indian peninsula. The objective of present work is to understand the underlying physical mechanism of initiation of such convection over this region. A set of meteorological observations obtained from microwave radiometer profiler, eddy covariance flux tower system, and Doppler weather radar, are used for investigating the convection genesis characteristics. In conjunction with observations, to bridge the gap of lack of high resolutional spatial observations, the high-resolution (2 km) model analysis is developed using Weather Research and Forecasting (WRF) model and four-dimensional data assimilation technique. The analysis of thermodynamical and dynamical indices carried out from the model analysis as well as observations. Results obtained from this study indicated the presence of a wind discontinuity line and a warm air advection from the north Indian region towards Gadanki caused this area hot dry and convectively active. The sea breeze front propagated over hot and dry area few hours before the genesis of the thunderstorm. The moisture flux convergence increased with the inland propagation of sea breeze front. We found that the inland penetration of sea-breeze front caused advection of moist and cold air over warm and dry region; reduction in dew point depression causing bulging of dry line and lowering of lifting condensation level; development of shear in wind direction and speed; increase in low level convergence and vertical velocity, upward transport of moist air and finally increase in helicity of the environment. The wind shear instability

  3. The Use of Per Session Clinical Assessment with Clients in a Mental Health Delivery System: An Investigation into How Clinical Mental Health Counseling Practicum Students and Practicum Instructors Use Routine Client Progress Feedback

    Science.gov (United States)

    Yates, Chad Michael

    2012-01-01

    The purpose of this study was to investigate how clinical mental health counseling practicum students and practicum instructors use per session assessment feedback with clients they served at a university counseling center. Per session assessment and feedback has been shown to increase the treatment outcomes that counselors achieve while treating…

  4. Information technologies at physics practicums in a subject-oriented school

    Directory of Open Access Journals (Sweden)

    Tishchenko Lyudmila V.

    2016-01-01

    Full Text Available The paper suggests a new method of implementing an activity approach in a physicsoriented program. Such method implies the use of a system which comprises three types of practical sessions: a laboratory practicum, a practical training aimed at analyzing physical processes on the basis of computerized modeling and a problem-solving practicum. A methodology used for holding practicums provides for an active use of information technologies. At laboratory sessions we use computerized sensors, tablets with an integrated data recorder, an electronic oscilloscope and process data in Excel tables. At practicums aimed at analyzing physical processes, we develop programs in Visual Basic and Рascal in order to visualize physical processes in the form of motion trajectories, dynamic charts; besides, we conduct computer experiments. At problem-solving practicums we use our own PowerPoint “Study Guide for an Interactive Whiteboard”, which contains a database of graphic and pictorial physics problems for students of 10–11 grades. Knowledge of information technologies facilitates students’ adaptation in modern society, improves education quality.

  5. Developing an Operational Mental Health Center with Service Provisions for the Public School System. Maxi II Practicum.

    Science.gov (United States)

    Tatoul, Warren P.

    The purpose of the practicum was to develop an effective relationship between a community mental health center and the public schools. To highlight the potential effectiveness of such a relationship, the practicum involved specific provisions for services to classes of socially maladjusted and/or emotionally disturbed children. The results of the…

  6. Evaluating Creative Thinking of Rn-Bsn Students in the Course of Clinical Case Study and Practicum

    Science.gov (United States)

    Ku, Ya-Lie

    2015-01-01

    This case study evaluated creative thinking of RN-BSN students in the course of clinical case study and practicum. Study design used quantitative and qualitative evaluations of creative thinking of RN-BSN students by triangulation method in the course of clinical case study and practicum. Sixty RN-BSN students self-perceived the changing levels of…

  7. Reducing Staphylococcus aureus bacterial counts in a dental clinic using an Ionic Breeze air purifier: a preliminary study.

    Science.gov (United States)

    Hubar, J Sean; Pelon, William; Strother, Elizabeth A; Sicard, F Scott

    2009-01-01

    Aerosols and droplets generated by dental procedures are contaminated with blood and bacteria and represent a potential route for the transmission of disease. This study sought to determine if Ionic Breeze air purifiers are effective in collecting and destroying bacteria found in dental aerosols (such as Staphylococcus aureus). This study placed one Sharper Image Professional Series Ionic Breeze Quadra unit and one Ionic Breeze GP unit (with germicidal protection) in dental operatories within the Louisiana State University School of Dentistry. After six hours of operation, bacterial samples were collected and streaked over surfaces of petri dishes containing trypticase soy sucrose bacitracin agar that had been supplemented with 5% sheep blood. The samples were incubated at 37 degrees C for 48 hours; at that point, the microbial colonies were counted. Additional testing was performed on suspect colonies to identify S. aureus strains and to determine if any of those isolates were pathogenic with or without antibiotic resistance. The Ionic Breeze GP unit killed more than 99% of all bacteria on the stainless steel collecting blades. The non-germicidal Ionic Breeze Quadra air purifier collected numerous bacteria that were found to include some pathogenic strains of S. aureus; however, none of these were resistant to antibiotics.

  8. Modelling tidal influence on sea breezes with models of different complexity

    Directory of Open Access Journals (Sweden)

    Jana Fischereit

    2016-09-01

    Full Text Available Tides influence both the formation and development of sea breezes. The aim of this study is to investigate the tidal influence to decide which model complexity is needed to reproduce the main influence of tides in a numerical model of coastal meteorology. Two processes are considered: (a the influence of tides on sea breezes through the effect of tidal currents on the surface wind and (b the thermal influence through the flooding and drying of mudflats in the intertidal area. The processes are considered separately by representing the ocean in the non-hydrostatic mesoscale atmosphere model METRAS with different complexity, ranging from a homogeneous stationary surface to a shallow-water model coupled to METRAS with a two-way exchange of momentum. The model system is applied in a case study to the German Bight, where large mudflats exist at low tide.The results show that the main influence of tides originates from a change in the mudflat heat budget through flooding and drying. The influence of tidal currents on the surface wind is small. Therefore, we conclude that no coupled atmosphere-ocean model is needed to reproduce the main influence of tides on sea breezes in a numerical model. Instead, we suggest to use an atmosphere model which simulates the change of surface cover in the intertidal area and includes a realistic spatial sea surface temperature distribution. For this it is essential to simulate the change in surface cover with the correct timing because the results show that the atmosphere reacts very sensitively to that change.

  9. Impact of sea breeze of the sea off Goa, west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Neetu, S.; Shetye, S.R.; Chandramohan, P.

    . OBSERVATIONS AND ANALYSIS The wind observations were made using an anemometer located on the terrace of the main building ofthe National Institute of Oceanography, Goa. The height ofthe anemometer was about 50 m above sea level. The recorded data were ten...Goa is oriented along approximately 340°. Hence the sea breeze at the height of about 50 metres above sea level recorded by the anemometer is almost along the coastline. Though this angle might have come under the influence of the shape of the building on which...

  10. Estimating the seaward extent of sea breeze from QuickSCAT scatterometry

    Digital Repository Service at National Institute of Oceanography (India)

    Aparna, M.; Shetye, S.R.; Shankar, D.; Shenoi, S.S.C.; Mehra, P.; Desai, R.G.P.

    wind vectors spaced equally along the normal to the coast, but the differing coordinates of wind vectors in the swath during each pass of the satellite does not meet this requirement. Hence, we define a set of regularly spaced 0.1C176 C2 1C176 cells (C...023107$05.00 L13601 1of4 averaged. The wind vectors thus chosen were considered equally spaced. To enhance the local signal (herein, that associated with the sea-breeze system), the mean of the wind vectors over all the cells was subtracted from each...

  11. Using Breeze for Communication and Assessment of Internships: An Exploratory Study

    Directory of Open Access Journals (Sweden)

    Kelly Wilkinson

    2008-07-01

    Full Text Available An important component of internships is the connection between students, universities and employers. “High-quality internships . . . encourage contact between faculty and students as well as develop cooperation among students,” (Implementing and Assessing Internships, 2002, 67. This “good practice” must exist to ensure good performance assessment (Implementing and assessing internships 2002. Students in an internship program were given web cameras and access to the software Breeze to use for a video journal. Focus groups were conducted to determine the students’ opinions of using this type of assessment. Students overwhelmingly preferred this type of assessment and saw the benefits of using the technology beyond the internship.

  12. Theoretical calculations of interactions between urban breezes and mountain slope winds in the presence of basic-state wind

    Science.gov (United States)

    Seo, Jaemyeong Mango; Ganbat, Gantuya; Han, Ji-Young; Baik, Jong-Jin

    2017-02-01

    Many big cities around the world are located near mountains. In city-mountain regions, thermally and topographically forced local winds are produced and they affect the transport of pollutants emitted into the urban atmosphere. A better understanding of the dynamics of thermally and topographically forced local winds is necessary to improve the prediction of local winds and to cope with environmental problems. In this study, we theoretically examine the interactions of urban breezes with mountain slope winds in the presence of basic-state wind within the context of the response of a stably stratified atmosphere to prescribed thermal and mechanical forcing. The interactions between urban breezes and mountain slope winds are viewed through the linear superposition of individual analytical solutions for urban thermal forcing, mountain thermal forcing, and mountain mechanical forcing. A setting is considered in which a city is located downwind of a mountain. In the nighttime, in the mountain-side urban area, surface/near-surface horizontal flows induced by mountain cooling and mountain mechanical forcing cooperatively interact with urban breezes, resulting in strengthened winds. In the daytime, in the urban area, surface/near-surface horizontal flows induced by mountain heating are opposed to urban breezes, giving rise to weakened winds. It is shown that the degree of interactions between urban breezes and mountain slope winds is sensitive to mountain height and basic-state wind speed. Particularly, a change in basic-state wind speed affects not only the strength of thermally and mechanically induced flows (internal gravity waves) but also their vertical wavelength and decaying rate. The examination of a case in a setting in which a city is located upwind of a mountain reveals that basic-state wind direction is an important factor that significantly affects the interactions of urban breezes with mountain slope winds.

  13. Numerical simulation of sea breeze characteristics observed at tropical coastal site, Kalpakkam

    Indian Academy of Sciences (India)

    P Jamima; J Lakshminarasimhan

    2004-06-01

    Sea breeze characteristics around Kalpakkam tropical coastal site are studied using an Advanced Regional Prediction System (ARPS) mesoscale model, which is non-hydrostatic, compressible atmospheric prediction model following the terrain coordinate system. Various options such as surface physics, atmospheric radiation physics, Coriolis force, microphysics, cumulus parameterization and 1.5 level TKE closure scheme for diffusion are included in the model. A joint meteorological field experiment was carried out by IITM-Pune and IGCAR at Kalpakkam by deploying state-of-the-art sensors and tether balloon systems for observing the height profiles of meteorological parameters. The data obtained from the field experiment are used here to compare the results from numerical simulations. From the simulated results, it is seen that duration of the sea breeze is 6 hours which agrees well with the observations. The height of the Thermal Internal Boundary Layer (TIBL) is also simulated from the vertical profiles of potential temperature. Simulated wind speed and wind directions are compared with the 50m tower data and potential temperature profiles are compared with the kytoon data. Results are in good agreement with the observed values except during night time wherein a small difference is seen in the wind speed.

  14. Spalding Junior High, Unit 1 Dropout Prevention Program. Maxi 2 Practicum.

    Science.gov (United States)

    Wilson, Joe C.

    The purpose of this practicum was to develop strategies to reduce the dropout rate at Spalding Junior High, Unit 1, Griffin, Georgia. Potential dropouts were identified and specific strategies were used to assist students in solving problems which caused them to become potential dropouts. Some of the strategies developed were: (1) faculty…

  15. Career Awareness: One Means for Meeting the Changing Role of Education. Maxi II [Practicum.

    Science.gov (United States)

    Auteri, Rose Mary P.

    This practicum was designed to improve creative problem-solving skills in children through the use of career concepts. Although the full program was developed for youngsters in grade three through six, this project exposed fifth and sixth graders at the Northside School, Levittown, New York to the Career Awareness Program for a period of weeks.…

  16. The Development and Evaluation of the Multi-Unit Elementary School. Maxi II Practicum Report.

    Science.gov (United States)

    Durham, Joe D.

    The purpose of this practicum was to show the development and evaluation of a multi-unit elementary school (MUS-E) using Individually Guided Education. As an organizational structure capable of permitting planned change. MUS-E provides for the growth of its students on an individual basis, provides in-service for its teachers, involves the public…

  17. Program for Hearing Impaired Children: Preschool Phase. Maxi II Practicum Report.

    Science.gov (United States)

    Drew, Herbert A., Jr.

    Reported are results of a practicum from which a regional program for hard of hearing preschool children was developed and implemented which provided direct classroom services, parent counseling and inservice educational programs for school districts in the southeast region of Massachusetts. Noted is the delivery model of an educational…

  18. Program for Hearing Impaired Adolescents: Secondary School Phase. Maxi II Practicum Report.

    Science.gov (United States)

    Lynch, Edward J.

    Described in the practicum report is the design, implementation, and evaluation of the first comprehensive high school program for five hearing impaired adolescents in Southeastern Massachusetts. Sections focus on the following topics: the Southeastern region's need for a high school hearing impaired program, the impact of the state invitation to…

  19. Improving Child Management Practices of Parents and Teachers. Maxi I Practicum. Final Report.

    Science.gov (United States)

    Adreani, Arnold J.; McCaffrey, Robert

    The practicum design reported in this document was based on one basic assumption, that the adult perceptions of children influence adult behavior toward children which in turn influences the child's behavior. Therefore, behavior changes by children could best be effected by changing the adult perception of, and behavior toward, the child.…

  20. Career Guidance: An Implementation Model for Small High Schools. A Maxi I Practicum.

    Science.gov (United States)

    Stevens, Richard; And Others

    The purpose of this practicum was to design, develop, and implement a career guidance program for small high schools. The program description would act as a model for implementation at other high schools desiring a career guidance program. The method of communicating the program to others was the writing of a "how to" book which others would use…

  1. Improving Student Attitudes in Three Elementary Schools Through a Life Leadership Program. Maxi 1 Practicum.

    Science.gov (United States)

    Beesley, Earl G.; And Others

    The purpose of this practicum was to improve elementary student attitudes toward school, teachers, and administrators through implementation of a LIFE Leadership Program. The program was implemented in three Dallas Independent School District (DISD) elementary schools at the fourth-grade, fifth-grade, and sixth-grade levels. The same grade levels…

  2. Scrutinizing Practicum for a More Powerful Teacher Education: A Longitudinal Study with Pre-Service Teachers

    Science.gov (United States)

    Serdar Tülüce, Hande; Çeçen, Sevdeger

    2016-01-01

    This study aims to explore the role of school-based practicum in promoting pre-service English language teachers' professional development through the use of a longitudinal design in combination with qualitative methods. To achieve this aim, pre-service teachers were asked to successively reflect on video-recordings of their micro-lessons in their…

  3. "We Are Left in Limbo!": Chinese EFL Student Teachers' Teaching Practicum Experience

    Science.gov (United States)

    Yan, Chunmei; He, Chuanjun

    2015-01-01

    Tensions between vision and reality in the teaching practicum is a significant issue in research and practice globally, but scanty attention has been awarded to research into areas of tension in teaching practice itself. This paper reports on a study that examines a cohort of Chinese English as a Foreign Language (EFL) student teachers'…

  4. Experiences of Student Speech-Language Pathology Clinicians in the Initial Clinical Practicum: A Phenomenological Study

    Science.gov (United States)

    Nelson, Lori A.

    2011-01-01

    Speech-language pathology literature is limited in describing the clinical practicum process from the student perspective. Much of the supervision literature in this field focuses on quantitative research and/or the point of view of the supervisor. Understanding the student experience serves to enhance the quality of clinical supervision. Of…

  5. Practicum Learnings for Counseling and Art Therapy Students: The Shared and the Particular

    Science.gov (United States)

    Van Lith, Theresa; Voronin, Lorelei

    2016-01-01

    Practicum experience in counseling and therapy training can be an anxiety-inducing time as students begin to apply their acquired theoretical knowledge. On-site supervisors closely monitor students' development by making use of example-based involvements to provide valuable insights and learning opportunities. This paper examines the findings from…

  6. A Practicum-Based Teacher Training Program for Preschool Handicapped Children. Final Report.

    Science.gov (United States)

    Colarusso, Ronald P.

    Described in the final report is a 3-year project which prepared 25 teachers at Master's degree level in a practicum based teacher training program for preschool handicapped children. Stressed are the program's objective of developing effective teachers able to cope with behavioral and educational problems irrespective of purported etiologies or…

  7. Cultivating Pre-Service Teachers' Classroom Management Skills through Teaching Practicum: A Reflective Practice

    Science.gov (United States)

    Ragawanti, Debora Tri

    2015-01-01

    Classroom management is commonly believed to be the key to the success of an instruction. Many student teachers, however, might find it very challenging to handle their classrooms. It is, therefore, necessary to advance their professional practice in the context of a real classroom such as through teaching practicum and reflective practice. This…

  8. Unfolding Case-Based Practicum Curriculum Infusing Crisis, Trauma, and Disaster Preparation

    Science.gov (United States)

    Greene, Catie A.; Williams, Amy E.; Harris, Pamela N.; Travis, Sterling P.; Kim, Sharon Y.

    2016-01-01

    The authors evaluated an unfolding case-based approach to a practicum in counseling course infusing crisis, trauma, and disaster preparation for changes in students' crisis self-efficacy across a semester. The course, informed by constructivist-developmental pedagogy and centered on the unfolding case, resulted in significant increases in…

  9. Pre-Service Primary Teachers Negotiating Physical Education Identities during the Practicum

    Science.gov (United States)

    Fletcher, Tim; Kosnik, Clare

    2016-01-01

    This research examined the ways in which pre-service primary teachers' experiences of physical education during the practicum influenced the development of their identities as teachers of physical education. Guided by a social constructivist view of identity, semi-structured interviews were conducted with 10 pre-service teachers over one academic…

  10. "L'arte D'arrangiarsi": Evaluation of an Innovative Practice in a Preservice Practicum

    Science.gov (United States)

    Macy, Marisa; Squires, Jane

    2009-01-01

    Building on Opportunities for Student Teaching and Learning (BOOST) is a community-based summer preschool program developed, implemented, and coordinated by student teachers, university supervisors, and faculty. Ten preservice graduate students participated in BOOST practicum activities during the spring and summer terms of their 1-year Early…

  11. Practicum Experiences as Sources of Pre-Service Teachers' Self-Efficacy

    Science.gov (United States)

    Martins, Maria; Costa, João; Onofre, Marcos

    2015-01-01

    This study examines physical education pre-service teachers' (PTs) self-efficacy and practicum experiences as self-efficacy sources through a mixed-method approach. For the quantitative phase, a self-efficacy questionnaire was applied to 141 PTs. Results showed a stronger self-efficacy in the relationship with students and discipline promotion.…

  12. Dangerous Practices: The Practicum Experiences of Non-Indigenous Pre-Service Teachers in Remote Communities

    Science.gov (United States)

    Auld, Glenn; Dyer, Julie; Charles, Claire

    2016-01-01

    This paper seeks to explore the risks of providing preservice teachers with professional experiences in remote communities. In particular this paper focuses on the risks associated with this kind of professional experience. Twelve pre-service teachers were interviewed whilst on a three-week practicum around Katherine and in Maningrida in the…

  13. Bridging Community Generational Gaps through Experiential Learning: A College Nursing Student Practicum for Elderly Patients

    Science.gov (United States)

    Pate, Jane D.

    2013-01-01

    At the study site, an elder care practicum was adopted after nursing students demonstrated a lack of interest in the well-being of elderly patients. The purpose of the study was to determine if there was a change in college nursing students' attitudes toward nursing home residents as a result of increased intergenerational exposure following…

  14. Making the Grade: Describing Inherent Requirements for the Initial Teacher Education Practicum

    Science.gov (United States)

    Sharplin, Elaine; Peden, Sanna; Marais, Ida

    2016-01-01

    This study explores the development, description, and illustration of inherent requirement (IR) statements to make explicit the requirements for performance on an initial teacher education (ITE) practicum. Through consultative group processes with stakeholders involved in ITE, seven IR domains were identified. From interviews with academics,…

  15. Steps to Opening Scientific Inquiry: Pre-Service Teachers' Practicum Experiences with a New Support Framework

    Science.gov (United States)

    Rees, Carol; Pardo, Richard; Parker, Jennifer

    2013-01-01

    This qualitative multiple-comparative case study investigates (1) The reported experiences and impressions of four pre-service teachers (PTs) on practicum placement in four different classrooms (grades 1-9) where a new Steps to Inquiry (SI) framework was being utilized to support students conducting open inquiry; (2) The relative dispositions of…

  16. A Social Media Practicum: An Action-Learning Approach to Social Media Marketing and Analytics

    Science.gov (United States)

    Atwong, Catherine T.

    2015-01-01

    To prepare students for the rapidly evolving field of digital marketing, which requires more and more technical skills every year, a social media practicum creates a learning environment in which students can apply marketing principles and become ready for collaborative work in social media marketing and analytics. Using student newspapers as…

  17. Bridging Community Generational Gaps through Experiential Learning: A College Nursing Student Practicum for Elderly Patients

    Science.gov (United States)

    Pate, Jane D.

    2013-01-01

    At the study site, an elder care practicum was adopted after nursing students demonstrated a lack of interest in the well-being of elderly patients. The purpose of the study was to determine if there was a change in college nursing students' attitudes toward nursing home residents as a result of increased intergenerational exposure following an…

  18. Assessing the Impact of Sequencing Practicums for Welding in Agricultural Mechanics

    Science.gov (United States)

    Rose, Malcolm; Pate, Michael L.; Lawver, Rebecca G.; Warnick, Brian K.; Dai, Xin

    2015-01-01

    This study examined the impact of sequencing practicums for welding on students' ability to perform a 1F (flat position-fillet lap joint) weld on low-carbon steel. Participants were randomly assigned a specific practice sequence of welding for using gas metal arc welding (GMAW) and shielded metal arc welding (SMAW). A total of 71 participants…

  19. Online Learning Management Systems (LMS) and Sense of Community: A Pre-Service Practicum Perspective

    Science.gov (United States)

    Rideout, Glenn; Bruinsma, Robert; Hull, John; Modayil, Jacob

    2007-01-01

    This paper examines the impact of the implementation of an online learning management system (LMS) on pre­-service teachers during their major pre-­service practicum. The LMS enabled students to remain connected to peers, professors, and supervisors while new relationships were formed with in­school personnel such as mentor teachers, principals,…

  20. Designing and Implementing the TESOL Teaching Practicum Abroad: Focus on Interaction

    Science.gov (United States)

    Tomas, Zuzana; Farrelly, Rai; Haslam, Mara

    2008-01-01

    The practical teaching course, also known as the "practicum", is an essential component in graduate TESOL programs in the United States. The rationale behind this course is to allow preservice teachers the opportunity "to acquire the practical skills and knowledge needed to function as effective language teacher[s]". Traditionally, practicum…

  1. Intercultural Teacher Education: Challenges and Ethical Dilemmas on an International Practicum

    Science.gov (United States)

    Chan, Jenny; Parr, Graham

    2012-01-01

    Interest is growing in the potential of international intercultural teaching practicums to connect students to international dimensions of education and to productively disturb the conceptions of teaching, diversity and culture that some pre-service teachers bring with them into their teaching. This paper reports on an international teaching…

  2. Super or Superfluous in the South Pacific?: Unearthing the Benefits of an Overseas Teaching Practicum

    Science.gov (United States)

    Fitzsimmons, Phil; McKenzie, Barbra

    2006-01-01

    This article discusses the findings of a project that sought to understand the professional, and perhaps the personal, benefits gained from participating in an overseas teaching practicum. Using in-situ classroom observations, semi-structured interviews and informal discussions, it became apparent that the participating students believed they had…

  3. Results of a Practicum Offering Teaching-Focused Graduate Student Professional Development

    Science.gov (United States)

    Richards-Babb, Michelle; Penn, John H.; Withers, Michelle

    2014-01-01

    Providing chemistry graduate students with opportunities to learn about evidence-based teaching and to practice teaching skills in a mentored environment is crucial to their professional development. Herein is described the model for a graduate-level teaching practicum course specifically focused on the chemistry discipline. This course addressed…

  4. When Communities Collide: The Shared Construction and Defence of Community and Identity during a Teaching Practicum

    Science.gov (United States)

    Trent, John

    2014-01-01

    This article describes the results of a qualitative multiple case study investigation of the experiences of preservice teachers during a teaching practicum in Hong Kong. The study uses in-depth interviews with pairs of student teachers and their school-based supporting teachers to understand how the former positioned themselves as particular types…

  5. Aboriginal Post-Interns' Views of Their Rural Teaching-Practicum

    Science.gov (United States)

    Gerard, Jessi; Lapointe, Joshua; Ralph, Edwin; Walker, Keith

    2013-01-01

    In this article, two indigenous post-interns, who completed their 16-week extended-teaching practicum sessions in rural schools in one Western Canadian province, assess their school-based internship experiences. They summarize their perspectives in three areas: 1) the elements they perceived as positive during the internship, 2) the challenging…

  6. Preservice EAL Teaching as Emotional Experiences: Practicum Experience in an Australian Secondary School

    Science.gov (United States)

    Nguyen, Minh Hue

    2014-01-01

    Drawing on activity theory, this qualitative case study examines the emotional experiences of Maria, a preservice teacher of English as an additional language (EAL) during the practicum in an Australian secondary school setting and the factors shaping these emotions. Data included interviews with the preservice teacher before and after the…

  7. Using Arts-Based Activities to Foster Transformative Learning during a Teaching Practicum in Kenya

    Science.gov (United States)

    Black, Glenda; Bernardes, Rogerio

    2012-01-01

    This essay explores and presents strategies we, as Canadian faculty facilitators of a teaching practicum in Kenya, used to foster the pre-service teachers' knowledge and understanding of critical reflection and transformative learning processes by using arts-based activities. Participation in the arts-based activities while in Kenya encouraged the…

  8. Creating a Sustainable and Supportive Teaching Practicum in Rural and Regional Locations

    Science.gov (United States)

    Ryan, Josephine; Jones, Melitta; Walta, Caroline

    2012-01-01

    The study described in this paper Creating an effective practicum model for rural and regional preservice teachers is designed to address the ongoing difficulties experienced by schools and universities as they seek to provide high quality preservice teacher education for individuals in rural areas. Lecturers from the regional campuses of two…

  9. Transforming the Existing Model of Teaching Practicum: A Study of Chinese EFL Student Teachers' Perceptions

    Science.gov (United States)

    Yan, Chunmei; He, Chuanjun

    2010-01-01

    This paper reports on a study of Chinese pre-service teachers' perceived problems in their teaching practicum. Reflective paper-writing was employed to investigate the views of 210 student teachers on an English as a foreign language (EFL) teacher education programme in Central China. The findings highlight six major problems. The paper points out…

  10. Developing Primary Pre-Service Teachers' Mathematical Content Knowledge during Practicum Teaching

    Science.gov (United States)

    Livy, Sharyn L.; Vale, Colleen; Herbert, Sandra

    2016-01-01

    While it is recognised that a teachers' mathematical content knowledge (MCK) is crucial for teaching, less is known about when different categories of MCK develop during teacher education. This paper reports on two primary pre-service teachers, whose MCK was investigated during their practicum experiences in first, second and fourth years of a…

  11. Examining Interaction in the Teaching Practicum: Issues of Language, Power and Control

    Science.gov (United States)

    Hyland, Fiona; Lo, Margaret M.

    2006-01-01

    This study examines the post-observation interactions between six English as a Second Language (ESL) student teachers and their university tutors during their teaching practicum in Hong Kong. Data consist of interviews with university tutors, transcriptions of recorded conferences and stimulated recall interviews with student teachers. Case…

  12. Counseling Skills Pre-Practicum Training at Guidance and Counseling Undergraduate Programs: A Qualitative Investigation

    Science.gov (United States)

    Aladag, Mine

    2013-01-01

    This study was aimed to describe counseling skills pre-practicum training at guidance and counseling undergraduate programs in Turkey. A descriptive study was conducted based upon qualitative data. The research group of this study consisted of 11 guidance and counseling undergraduate programs voluntarily participate into study. The Survey Form…

  13. DESARROLLO DE COMPETENCIAS EN EL PRACTICUM DE MAESTROS: ABPY COACHING MULTIDIMENSIONAL

    Directory of Open Access Journals (Sweden)

    Antonio J. Rodríguez-Hidalgo

    2015-01-01

    Full Text Available Esta investigación pretende contribuir al conocimiento de la influencia del Practicumen el desarrollo de competencias por parte de los maestros y maestras en su formación inicial. Se expone una revisión de estudios en esta materia y la evolución de la metodología docente empleada en Practicum en la Facultad de Ciencias de la Educación de la Universidad de Córdoba. Se presentan las bases del modelo actual de Practicum, focalizado en el Aprendizaje Basado en Problemas mediante Coaching Multidimensional (modelo ABP-CM especialmente diseñado para potenciar el desarrollo de competencias. Se realizó un estudio pretest/postest con la finalidad de estudiar el impacto del Practicum bajo el modelo ABP-CM sobre la propia percepción del alumnado del desarrollo de sus competencias. Entre pretest y postest solo medió la experiencia formativa de Prácticum I del grado de Educación Primaria. En el pretest participaron 145 estudiantes y en el postest 196. Los datos se recogieron mediante un cuestionario auto-informe compuesto por ítems sobre el grado auto-percibido de desarrollo de competencias transversales, específicas y prácticas. Los resultados muestran un avance significativo en el desarrollo auto-percibido de la mitad de las competencias. Se vieron mejoradas: un tercio de las competencias transversales (especialmente las personales y sistémicas; más dela mitad de las competencias específicas; y tres cuartas partes de las competencias concretas de Practicum. La naturaleza de muchas de las competencias más beneficiadas es concordante con la naturaleza de las estrategias docentes empleadas, lo que nos lleva a inferir que el modelo ABP-CM desarrollado en Practicum es un buen catalizador para el desarrollo y cristalización de competencias.

  14. Evaluation of the Practicum for Teaching Degrees from the Students’ Perspective

    Directory of Open Access Journals (Sweden)

    Michelle Mendoza-Lira

    2014-09-01

    Full Text Available The Practicum –understood not only as external practices developed by future teachers in schools, but also as the tutorials, seminars and projects done at the University–, is an essential component of initial teacher training. Given the importance of this topic, this paper includes the results obtained in a trans-sectional quantitative descriptive study focused on learning how sampled students from the Primary Teaching and Preschool Teaching Degree Programs from a public university in Madrid evaluate the organization of Practicums I and II, and the support they received from related personnel from the University and the education institution where the practicums took place. A questionnaire was designed to obtain this information from students from these programs and was answered by 426 students. To validate the questionnaire, the Lawshe’s formula was used, which establishes a Content Validity Index (CVI of 0.62, with ten expert judges for agreement not to be reached by chance. In addition, the information provided by the sample was coded in a database for further processing with SPSS 15.0. Using this software, descriptive analyzes were performed to determine the distribution of the sample in each of the variables defined in this study. Finally, results showed a clear tendency to perceive the training institution (the University and its most representative agent (tutor as insufficient to meet the demands for emotional, professional and pedagogical support. On the contrary, centers where practicum is conducted and collaborating teachers are seen not only as the main sources of orientation and guidance during the Practicum, but also as references in the acquisition and development of professional competences.

  15. Impact of land-sea breezes at different scales on the diurnal rainfall in Taiwan

    Science.gov (United States)

    Huang, Wan-Ru; Wang, Shih-Yu

    2014-10-01

    The formation mechanism of diurnal rainfall in Taiwan is commonly recognized as a result of local forcings involving solar thermal heating and island-scale land-sea breeze (LSB) interacting with orography. This study found that the diurnal variation of the large-scale circulation over the East Asia-Western North Pacific (EAWNP) modulates considerably the diurnal rainfall in Taiwan. It is shown that the interaction between the two LSB systems—the island-scale LSB and the large-scale LSB over EAWNP—facilitates the formation of the early morning rainfall in western Taiwan, afternoon rainfall in central Taiwan, and nighttime rainfall in eastern Taiwan. Moreover, the post-1998 strengthening of a shallow, low-level southerly wind belt along the coast of Southeast China appears to intensify the diurnal rainfall activity in Taiwan. These findings reveal the role of the large-scale LSB and its long-term variation in the modulation of local diurnal rainfall.

  16. Nursing student and professor perceptions and assessments of the achievement of practicum competencies: A mixed method approach.

    Science.gov (United States)

    Fuentes-Pumarola, Concepció; Ballester-Ferrando, David; Gelabert-Vilella, Sandra; Bosch-Farré, Cristina; Malagón-Aguilera, M Carme; Rascón-Hernán, Carolina; Bonmatí-Tomàs, Anna; Fernandez-Peña, Rosario

    2016-10-01

    Within the context of the European Higher Education Area's requirement of competency-based assessments, the objective of the present study was to evaluate the Nursing Degree Practicum experience at the University of Girona (Spain) and ascertain student and faculty perceptions of the degree of competency achieved as a result of the practicum. This cross-sectional, descriptive, study combined quantitative analysis of a questionnaire and qualitative analysis of focus group comments. In the quantitative part of the study, 163 fourth-year nursing students completed the questionnaire; the qualitative analysis was derived from a focus group of 5 students and 5 professors. On the questionnaire, overall practicum evaluation was 8.39 on a 10-point Likert scale; scores evaluating the nurse mentor/instructor and nursing professor were 8.43 and 7.98, respectively. The geriatrics practicum experience received the lowest overall score (7.81), while the surgical practicum received the lowest score on the adequacy of knowledge acquired in the classroom in previous courses (5.54). The best scores were earned by the mental health and intensive/emergency care practicum experiences (a mean of 9.05 and 8.70, respectively). Students and professors in the focus group agreed that the practicum met the Nursing degree program's competency goals, highlighting practical activity as the best methodology to evaluate competencies. Participants highlighted the importance of reflective practice and the role of the nurse mentor/instructor in student learning, and indicated that it is essential for the university and the health care centers where students take practicum courses to maintain a strong relationship and good communication. Finally, feedback from the nurse mentor/instructor and Nursing professor was very important to students, both to motivate them and to help them learn.

  17. Observed and simulated sea breeze characteristics over Rayong coastal area, Thailand

    Science.gov (United States)

    Phan, Tung Thanh; Manomaiphiboon, Kasemsan

    2012-05-01

    This work presents the detailed characterization of sea breeze (SB) over the Rayong coastal area, one of the most rapidly developed and highly industrialized areas during the last decade in Thailand, using observation data analysis and fine-resolution (2 km) mesoscale meteorological modeling with incorporation of new land cover and satellite-derived vegetation fraction data sets. The key characteristics considered include frequency of SB occurrence, sea-breeze day (SBD) identification, degree of inland penetration, and boundary layer development. It was found that SBs occur frequently in the winter due mainly to relatively large land-sea temperature contrasts and minimally in the wet season. Monthly mean SB onset and cessation times are at around 12-15 local time (LT) and 18-21 LT, respectively, and its strength peaks during the early- to mid-afternoon. Monthly SB hodographs generally exhibit clockwise rotations, and SB inland penetration (at PCD-T tower) ranges widely with the monthly means of 25-55 km from the coast. Mesoscale MM5 modeling was performed on two selected SBDs (13 January and 16 March 2006), on which the SBs are under weak and onshore strong influences from background winds, respectively. Simulated near-surface winds and temperature were found to be in fair-to-acceptable agreement with the observations. The SB circulation along the Rayong coast is clearly defined with a return flow aloft and a front on 13 January, while it is enhanced by the onshore background winds on 16 March. Another SB along the Chonburi coast also develops separately, but their fronts merge into one in the mid-afternoon, resulting in large area coverage by the SB. Simulated planetary boundary layer height over the land area is significantly affected by a thermal internal boundary layer (TIBL) induced by an SB, which is found to be low near the coast and increases toward the front (up to 800-1,000 m along the Rayong coast).

  18. An Israeli haboob: Sea breeze activating local anthropogenic dust sources in the Negev loess

    Science.gov (United States)

    Crouvi, Onn; Dayan, Uri; Amit, Rivka; Enzel, Yehouda

    2017-02-01

    Meso-scale weather systems, such as convective haboobs, are considered to be an important dust generation mechanism. In Israel, however, rather than of meso-scale weather systems, most dust storms are generated by synoptic-scale systems, originating from Sahara and Arabia. Consequently, only distal sources of suspended and deposited dust in Israel are currently reported. Here we report the first detailed study on the merging of synoptic- and meso-scale weather systems leading to a prominent dust outbreak over the Negev, Israel. During the afternoon of May 2nd, 2007, a massive dust storm covered the northern Negev, forming a one kilometer high wall of dust. The haboob was associated with PM10 concentrations of 1000-1500 μg m-3 that advanced at a speed of 10-15 m s-1 and caused temporary closure of local airports. In contrast to most reported haboobs, this one was generated by a sea breeze front acting as a weak cold front enhanced by a cold core cyclone positioned over Libya and Egypt. The sea breeze that brought cold and moist marine air acted as a gravity current with strong surface winds. The sources for the haboob were the loessial soils of the northwestern Negev, especially agricultural fields that were highly disturbed in late spring to early summer. Such surface disturbance is caused by agricultural and/or intensive grazing practices. Our study emphasizes the importance of local dust sources in the Negev and stresses loess recycling as an important process in contemporary dust storms over Israel.

  19. Preservice physical educators' self-efficacy beliefs toward inclusion: the impact of coursework and practicum.

    Science.gov (United States)

    Taliaferro, Andrea R; Hammond, Lindsay; Wyant, Kristi

    2015-01-01

    The purpose of this study was to investigate the effect of completion of an adapted physical education (APE) course with an associated on-campus practicum on preservice physical educators' self-efficacy beliefs toward the inclusion of individuals with specific disabilities (autism, intellectual disabilities, physical disabilities, and visual impairments). Preservice students in physical education teacher education (N = 98) at a large U.S. Midwestern university enrolled in 1 of 2 separate 15-wk APE courses with an associated 9-wk practicum experience were surveyed at the beginning, middle, and conclusion of each course. Results of 4 separate 2-factor fixed-effect split-plot ANOVAs revealed significant improvements in self-efficacy beliefs from Wk 1 to Wk 8 and from Wk 1 to Wk 15 across all disability categories. Significant differences between courses were found only for autism in Time 1.

  20. Effects of a senior practicum course on nursing students' confidence in speaking up for patient safety.

    Science.gov (United States)

    Kent, Lauren; Anderson, Gabrielle; Ciocca, Rebecca; Shanks, Linda; Enlow, Michele

    2015-03-01

    As patient advocates, nurses are responsible for speaking up against unsafe practices. Nursing students must develop the confidence to speak up for patient safety so that they can hold themselves, as well as their peers and coworkers, accountable for patients' well-being. The purpose of this study was to examine the effects of a senior practicum course on confidence for speaking up for patient safety in nursing students. Confidence in speaking up for patient safety was measured with the Health Professional Education in Patient Safety Survey. The study showed a significant increase in nursing students' confidence after the senior practicum course, but there was no significant change in students' confidence in questioning someone of authority.

  1. Lessons learned from an accelerated post-master's nurse educator certificate program: teaching the practicum course.

    Science.gov (United States)

    Flood, Lisa Sue; Powers, Mary Ellen

    2012-01-01

    Nursing faces current and future shortages in the practice arena. The nurse educator shortage exacerbates the nursing shortage.This article describes an innovative and collaborative approach developed to increase the supply of nurse educators. An overview of the initial offering of this post-master's nurse educator certificate program, a grant-funded, cohort-based program, delivered online in an accelerated format, is provided. Particular attention is given to the nursing education practicum, a precepted teaching experience. This course is viewed as a culminating course, wherein the role transition from expert practitioner to novice educator occurs as students connect the experiential aspects of the practicum with knowledge gained in didactic courses and enter a new community of practice. Lessons learned and recommendations for future cohorts are discussed.

  2. CULTIVATING PRE-SERVICE TEACHERS’ CLASSROOM MANAGEMENT SKILLS THROUGH TEACHING PRACTICUM: A REFLECTIVE PRACTICE

    OpenAIRE

    Debora Tri Ragawanti

    2015-01-01

    Classroom management is commonly believed to be the key to the success of an instruction. Many student teachers, however, might find it very challenging to handle their classrooms. It is, therefore, necessary to advance their professional practice in the context of a real classroom such as through teaching practicum and reflective practice. This study is aimed at identifying classroom management problems of student-teachers as revealed in their reflective journal entries and to demonstrate ho...

  3. Nursing Practicum in Gynaecology and Obstetrics – Early Influence Possibilities for a Specialty

    Science.gov (United States)

    Kasch, R.; Baum, P.; Dokter, M.; Zygmunt, M.; Wirkner, J.; Lange, A.; Fröhlich, S.; Merk, H.; Kasch, J.

    2015-01-01

    Background: The shortage of skilled personnel is ubiquitous, basic and further training is a key aspect in the recruitment of new medical colleagues. The significance of the nursing practicum in its function as gateway to the gynaecology and obstetrics discipline is practically unexplored. Methods: In an online questionnaire, medical students in all German faculties were questioned about the practica in their courses. The questionnaire reached 9079 medical students. 149 participants in nursing practica were selectively asked to answer 140 questions. We analysed those students who could, on the basis of their experiences in nursing practica, imagine undertaking an internship (clinical elective) in gynaecology (internship yes “Iy”) separately from those who could not or were still undecided (internship no “In” or, respectively, internship perhaps “Ip”). Results: Altogether 149 medical students who participated in a nursing practicum in the gynaecology discipline were selected, of these 94.9 % were female. 92 (61.7 %) of the students replied that, after their gynaecological nursing practicum, they wanted to undertake an internship in gynaecology (Iy); 39 (26.2 %) answered negatively (In) and 18 (12.1 %) were still undecided (Ip). With regard to the parameters gender, age and duration of study, there were no significant differences among the 3 groups (χ2 0.83). Besides the didactic and professional quality of the training, Iy also mentioned having had a higher practical orientation. They attained their aims more frequently, were better integrated in the health-care team and acquired more practical competences. Satisfaction with the practicum was evaluated as highest among the Iy. Discussion: Those students who could imagine taking an internship in gynaecology were seen to be more satisfied with their practica than those participants who declined or were undecided. The high proportion of females is an early indicator for a feminisation of the

  4. El aprendizaje de la enseñanza reflexiva en el contexto del Practicum de Magisterio

    Directory of Open Access Journals (Sweden)

    Ana RODRÍGUEZ MARCOS

    2009-11-01

    Full Text Available RESUMEN: Este trabajo forma parte de un proyecto interdisciplinar de investigación- acción-colaborativa, centrado en el aprendizaje de la enseñanza reflexiva en el contexto del Practicum de Magisterio. Describe la valoración de la experiencia y del «portfolio» utilizado por los profesores participantes de la Universidad.ABSTRACT: This work forms a part of an interdisciplinary project of collaborativeaction- research centred on the learning of the reflective teaching, within the context of the Initial Teacher Education Practicum. We describe hear the assessment of the experience and of the portfolio used by the professors involved.RÉSUMÉ: Cette étude fait partie d'un projet interdisciplinaire de rechercheaction de collaboration, centrée sur l'apprentissage de l'enseignement réflexif dans le contexte du «Practicum» dans la formation initiale des professeurs. Elle décrit la valoration de l'expérience et du portfolio utilisé par les professeurs de l'Université concernés.

  5. The influence of the summer sea breeze on thermal comfort in Funchal (Madeira). A contribution to tourism and urban planning.

    Energy Technology Data Exchange (ETDEWEB)

    Lopes, Antonio; Lopes, Sergio; Joao Alcoforado, Maria [Univ. de Lisboa (Portugal). Centro der Estudos Geograficos; Matzarakis, Andreas [Freiburg Univ. (Germany). Meteorological Inst.

    2011-10-15

    Tourism plays a crucial role for the development of coastal areas. Despite the mildness of Madeira's climate, very hot days can occur during summer, a situation to which most tourists from northern Europe (the majority of foreign tourists) are poorly adapted. As sea breezes strongly contribute to moderate heat stress in urban environments, their influence on the thermal comfort on the island has been studied. Sea breezes occurred on 84 % of the days during the period under study (May to October 2006). They usually start around 09:30 h and end after 22:00 h, with an average duration of about 12:50 hours and a mean velocity of 2.9 m/s. Physiologically Equivalent Temperature (PET) was used to evaluate the thermal comfort of a sample of days during the summer of 2006. It was concluded that most of the sites in the city are ''slightly comfortable'' during normal days with sea breeze, but only shore sites and the highest green areas offer some comfort during hot days. Inside the city, the thermal perception is generally ''hot'' and strong heat stress can occur. As sea breezes are important to mitigate heat stress, some basic guidelines were presented: urban planners should take advantage of this wind system avoiding dense construction near the shoreline that would act as a barrier to the renewal of the air inside the city. In terms of tourism, planners and local authorities should provide solutions to mitigate the negative effects during hot periods, creating a system to warn and relocate more vulnerable tourists to places near the shore line, to the mountains, to gardens and air-conditioned buildings. In combination with other components (beauty of the island, gastronomy, cultural values and safety), climate information can be a factor of attractiveness to tourists. (orig.)

  6. Air pollutant transport in a coastal environment. Part 1: Two-dimensional simulations of sea-breeze and mountain effects

    Science.gov (United States)

    Lu, Rong; Turco, Richard P.

    1994-01-01

    Over the southern California coastal region, observations of the vertical distributions of pollutants show that maximum concentrations can occur within temperature inversion layers well above the surface. A mesoscale model is used to study the dynamical phenomena that cause such layers, including sea breezes and mountain flows, and to study the characteristics of air pollutant transport in a coastal environment capped by a temperature inversion. The mathematical and physical structure of the model is described. Two-dimensional simulations corresponding to four configurations of coastal plains and mountains are discussed. The simulations reveal that pollutant transport over a coastal plain is strongly influenced by the topographic configuration, including the height of coastal mountains and their distance from the coastline. Sea breezes induced by land-sea thermal contrasts, as well as upslope winds induced along mountain flanks, both create vertical transport that can lead to the formation of elevated pollution layers. The sea-breeze circulation generates pollution layers by undercutting the mixed layer and lofting pollutants into the stable layer. Heating of mountain slopes acts to vent pollutants above the mountain ridge during the day; during the evening, pollutants can be injected directly into the inversion layer from the decaying upslope flows. In a land-sea configuration with mountains close to the coastline, the sea breeze and heated-mountain flow are strongly coupled. In the afternoon, this interaction can produce upslope flow from which polluted air is detrained into the inversion layer as a return circulation. When the mountains lie farther inland, however, pollutants may be trapped aloft when the mixed layer stabilizes in the late afternoon. As the nocturnal boundary layer forms over the coast in the evening, polluted mixed-layer air is effectively left behind in the inversion layer. In the Los Angeles Basin, the formation mechanism for elevated

  7. Evaluation of weather research and forecasting model parameterizations under sea-breeze conditions in a North Sea coastal environment

    Science.gov (United States)

    Salvador, Nadir; Reis, Neyval Costa; Santos, Jane Meri; Albuquerque, Taciana Toledo de Almeida; Loriato, Ayres Geraldo; Delbarre, Hervé; Augustin, Patrick; Sokolov, Anton; Moreira, Davidson Martins

    2016-12-01

    Three atmospheric boundary layer (ABL) schemes and two land surface models that are used in the Weather Research and Forecasting (WRF) model, version 3.4.1, were evaluated with numerical simulations by using data from the north coast of France (Dunkerque). The ABL schemes YSU (Yonsei University), ACM2 (Asymmetric Convective Model version 2), and MYJ (Mellor-Yamada-Janjic) were combined with two land surface models, Noah and RUC (Rapid Update Cycle), in order to determine the performances under sea-breeze conditions. Particular attention is given in the determination of the thermal internal boundary layer (TIBL), which is very important in air pollution scenarios. The other physics parameterizations used in the model were consistent for all simulations. The predictions of the sea-breeze dynamics output from the WRF model were compared with observations taken from sonic detection and ranging, light detection and ranging systems and a meteorological surface station to verify that the model had reasonable accuracy in predicting the behavior of local circulations. The temporal comparisons of the vertical and horizontal wind speeds and wind directions predicted by the WRF model showed that all runs detected the passage of the sea-breeze front. However, except for the combination of MYJ and Noah, all runs had a time delay compared with the frontal passage measured by the instruments. The proposed study shows that the synoptic wind attenuated the intensity and penetration of the sea breeze. This provided changes in the vertical mixing in a short period of time and on soil temperature that could not be detected by the WRF model simulations with the computational grid used. Additionally, among the tested schemes, the combination of the localclosure MYJ scheme with the land surface Noah scheme was able to produce the most accurate ABL height compared with observations, and it was also able to capture the TIBL.

  8. Identifying a Sea Breeze Circulation Pattern Over the Los Angeles Basin Using Airborne In Situ Carbon Dioxide Measurements

    Science.gov (United States)

    Brannan, A. L.; Schill, S.; Trousdell, J.; Heath, N.; Lefer, B. L.; Yang, M. M.; Bertram, T. H.

    2014-12-01

    The Los Angeles Basin in Southern California is an optimal location for a circulation study, due to its location between the Pacific Ocean to the west and the Santa Monica and San Gabriel mountain ranges to the east, as well as its booming metropolitan population. Sea breeze circulation carries air at low altitudes from coastal to inland regions, where the air rises and expands before returning back towards the coast at higher altitudes. As a result, relatively clean air is expected at low altitudes over coastal regions, but following the path of sea breeze circulation should increase the amount of anthropogenic influence. During the 2014 NASA Student Airborne Research Program, a highly modified DC-8 aircraft completed flights from June 23 to 25 in and around the LA Basin, including missed approaches at four local airports—Los Alamitos and Long Beach (coastal), Ontario and Riverside (inland). Because carbon dioxide (CO2) is chemically inert and well-suited as a conserved atmospheric tracer, the NASA Langley Atmospheric Vertical Observations of CO2 in the Earth's Troposphere (AVOCET) instrument was used to make airborne in situ carbon dioxide measurements. Combining measured wind speed and direction data from the aircraft with CO2 data shows that carbon dioxide can be used to trace the sea breeze circulation pattern of the Los Angeles basin.

  9. Interstellar neutral helium in the heliosphere from IBEX observations. IV. Flow vector, Mach number, and abundance of the Warm Breeze

    CERN Document Server

    Kubiak, M A; Bzowski, M; Sokol, J M; Fuselier, S A; Galli, A; Heirtzler, D; Kucharek, H; Leonard, T W; Moebius, D J McComas E; Park, J; Schwadron, N A; Wurz, P

    2016-01-01

    With the velocity vector and temperature of the pristine interstellar neutral (ISN) He recently obtained with high precision from a coordinated analysis summarized by McComas et al.2015b, we analyzed the IBEX observations of neutral He left out from this analysis. These observations were collected during the ISN observation seasons 2010---2014 and cover the region in the Earth's orbit where the Warm Breeze persists. We used the same simulation model and a very similar parameter fitting method to that used for the analysis of ISN He. We approximated the parent population of the Warm Breeze in front of the heliosphere with a homogeneous Maxwell-Boltzmann distribution function and found a temperature of $\\sim 9\\,500$ K, an inflow speed of 11.3 km s$^{-1}$, and an inflow longitude and latitude in the J2000 ecliptic coordinates $251.6^\\circ$, $12.0^\\circ$. The abundance of the Warm Breeze relative to the interstellar neutral He is 5.7\\% and the Mach number is 1.97. The newly found inflow direction of the Warm Bree...

  10. Atmospheric electrical field measurements near a fresh water reservoir and the formation of the lake breeze

    Directory of Open Access Journals (Sweden)

    Francisco Lopes

    2016-06-01

    Full Text Available In order to access the effect of the lakes in the atmospheric electrical field, measurements have been carried out near a large man-made lake in southern Portugal, the Alqueva reservoir, during the ALqueva hydro-meteorological EXperiment 2014. The purpose of these conjoint experiments was to study the impact of the Alqueva reservoir on the atmosphere, in particular on the local atmospheric electric environment by comparing measurements taken in the proximity of the lake. Two stations 10 km apart were used, as they were located up- and down-wind of the lake (Amieira and Parque Solar, respectively, in reference to the dominant northwestern wind direction. The up-wind station shows lower atmospheric electric potential gradient (PG values than the ones observed in the down-wind station between 12 and 20 UTC. The difference in the atmospheric electric PG between the up-wind and the down-wind station is ~30 V/m during the day. This differential occurs mainly during the development of a lake breeze, between 10 and 18 UTC, as a consequence of the surface temperature gradient between the surrounding land and the lake water. In the analysis presented, a correlation is found between the atmospheric electric PG differences and both wind speed and temperature gradients over the lake, thus supporting the influence of the lake breeze over the observed PG variation in the two stations. Two hypotheses are provided to explain this observation: (1 The air that flows from the lake into the land station is likely to increase the local electric conductivity through the removal of ground dust and the transport of cleaner air from higher altitudes with significant light ion concentrations. With such an increase in conductivity, it is expected to see a reduction of the atmospheric electric PG; (2 the resulting air flow over the land station carries negative ions formed by wave splashing in the lake's water surface, as a result of the so-called balloelectric effect

  11. Clients becoming teachers: Speech-language pathology students' understanding of rehabilitation following clinical practicum in a rehabilitation setting.

    Science.gov (United States)

    Attrill, Stacie; Gunn, Simon

    2010-04-01

    There has been limited research investigating the conceptual development of rehabilitation in speech-language pathology (SLP) students. The aim of this study was to describe SLP students' understanding of rehabilitation following completion of a clinical practicum in a rehabilitation setting. This study was conducted using a qualitative approach according to grounded theory methodology. Semi-structured interviews were conducted with 10 SLP students who had completed a practicum in a rehabilitation setting. Interview data analysis revealed the emergence of five axial categories. Clients becoming teachers was identified as the core category, as the notion that clients were fundamental to students' understanding of rehabilitation occurred reliably throughout the data and related to all other categories. A theoretical model was proposed that demonstrated successive levels of support to students in the acquisition of their understanding of rehabilitation on practicum. Students' understanding of rehabilitation was derived from client-related interactions and factors experienced on practicum in rehabilitation settings. Rehabilitation practicum provided students with a rich and complex learning environment that may facilitate the development of the "core skills" identified for rehabilitation practice.

  12. Evaluation of the atmospheric model WRF on the Qatar peninsula for a converging sea-breeze event

    Science.gov (United States)

    Balan Sobhana, Sandeepan; Nayak, Sashikant; Panchang, Vijay

    2016-04-01

    Qatar, a narrow peninsula covering an area of 11437 sq km, extends northwards into the Arabian Gulf for about 160km and has a maximum width of 88km. The convex shape of the coast-line and narrowness of the peninsula results in the Qatar region experiencing complex wind patterns. The geometry is favorable for formation of the land-sea breeze from both coastal sides of the peninsula. This can lead to the development of sea breeze convergence zones in the middle of the country. Although circulations arising from diurnal thermal contrast of land and water are amongst most intensively studied meteorological phenomena, there is no reported study for the Qatar peninsula and very few studies are reported for the Arabian Gulf region as whole. It is necessary to characterize the wind field for applications such as assessing air pollution, renewable energy etc. A non-hydrostatic mesoscale model, Weather Research and Forecast (WRF) with a nested high resolution grid permits the investigation of such fine scale phenomena. Data from eighteen land based Automated Weather Stations (AWS) and two offshore buoys deployed and maintained by the Qatar Meteorological Department were analyzed. Based on the analysis a clear case of sea breeze convergence were seen on 18 September 2015. Model simulations were used to investigate the synoptic conditions associated with the formation of this event. The season is characterized by week ambient north westerly wind over the Arabian Gulf. The WRF model performance is validated using observed in-situ data. Model simulations show that vertical extent of sea breeze cell was up to 1 km and the converging sea breeze regions were characterized with high vertical velocities. The WRF simulation also revealed that with high resolution, the model is capable of reproducing the fine scale patterns accurately. The error of predictions in the inner domain (highest resolution) are found to be relatively lower than coarse resolution domain. The maximum wind speed

  13. The Epistemography of an Urban and Regional Planning Practicum: Appropriation in the Face of Resistance. WCER Working Paper No. 2010-8

    Science.gov (United States)

    Bagley, Elizabeth

    2010-01-01

    In this paper, the author describes an ethnographic study of a graduate-level practicum at a large Midwestern university in order to examine one of the ways urban planners develop expertise. The graduate students in the practicum were guided in the production of a site plan for a developing area by a planner with 34 years of planning experience.…

  14. A Proposal for Methodology for Negotiation Practicum with Effective Use of ICT: A Technology Enhanced Course for Communication for Trust Building

    Science.gov (United States)

    Yamamoto, Tosh; Tagami, Masanori; Nakazawa, Minoru

    2012-01-01

    This paper purports to demonstrate a problem solving case in the course of the development of methodology, in which the quality of the negotiation practicum is maintained or raised without sacrificing the class contact hours for the lessons for reading comprehension skills, on which the essence of negotiation practicum is solely based. In this…

  15. [Formula: see text]Official Position of the American Academy of Clinical Neuropsychology (AACN): Guidelines for Practicum Training in Clinical Neuropsychology.

    Science.gov (United States)

    Nelson, Aaron P; Roper, Brad L; Slomine, Beth S; Morrison, Chris; Greher, Michael R; Janusz, Jennifer; Larson, Jennifer C; Meadows, Mary-Ellen; Ready, Rebecca E; Rivera Mindt, Monica; Whiteside, Doug M; Willment, Kim; Wodushek, Thomas R

    2015-01-01

    Practical experience is central to the education and training of neuropsychologists, beginning in graduate school and extending through postdoctoral fellowship. However, historically, little attention has been given to the structure and requirements of practicum training in clinical neuropsychology. A working group of senior-level neuropsychologists, as well as a current postdoctoral fellow, all from a diverse range of settings (The AACN Practicum Guidelines Workgroup), was formed to propose guidelines for practicum training in clinical neuropsychology. The Workgroup reviewed relevant literature and sought input from professional organizations involved in education and training in neuropsychology. The proposed guidelines provide a definition of practicum training in clinical neuropsychology, detail entry and exit criteria across competencies relevant to practicum training in clinical neuropsychology, and discuss the relationship between doctoral training programs and practicum training sites. The proposed guidelines also provide a methodology for competency-based evaluation of clinical neuropsychology practicum trainees and outline characteristics and features that are integral to an effective training environment. Although the guidelines discussed below may not be implemented in their entirety across all clinical neuropsychology practicum training sites, they are consistent with the latest developments in competency-based education.

  16. Effect of the catalyzing combustion of coke breeze on the energy saving in sinter process

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The mechanism of additive ZC-1 for catalyzing combustion of coke breeze in sintering of iron one fines was studied by using X-ray Diffraction, TGA and GC (Gas Chromatographer), by which energy saving was achieved on sinter pot test. The results show that the distance between cleavage planes is enlarged and the π-electrons are re-distibuted because of the insertion of cations/molecules of ZC-1 into the cleavage planes of carbon , resulting in the weakening of C-C bond, improving the adsorption of oxygen and lowering the activation energy of gasification of carbon from 25.8 kJ/mol to 18.9 kJ/mol , and the burning rate being increased and combustion residual reduced, all of which can lead to lower solid fuel consumption . Compared with the sintering test without addition of additives , the solid fuel consumption is reduced by 16.0%, meanwhile, the rate of finished sinter, the output of finished sinter and the tumbling index are increased by 2.03%, 7.0% and 3.71%, respectively, with incorporating 0.2% of additive ZC-1 in the sintering mixture, which is in agreement with the catalyzing mechanism of ZC-1.

  17. Fire Whirl Evolution Observed during a Valley Wind-Sea Breeze Reversal

    Directory of Open Access Journals (Sweden)

    Daisuke Seto

    2011-01-01

    Full Text Available This observational study documented the atmospheric environment of a prescribed fire conducted in a narrow valley when a small fire whirl developed during a mesoscale wind reversal. Based on analysis of in situ meteorological measurements, it is hypothesized that the fire whirl formed due to the presence of strong vertical wind shear caused by the interaction of a sea breeze front with a weaker up-valley wind. Vorticity generated by the interaction of the wind shear and the fire front was estimated to be ~0.2 s−1. Peak turbulence kinetic energy was caused by the wind shear rather than the buoyancy generated by the fire front. It was also found that the convective Froude number itself may not be sufficient for fire whirl prediction since it is less relevant to the near-surface boundary-layer turbulence generated by environmental wind shear. Observations from this case study indicate that even low-intensity prescribed fires can result in the formation of fire whirls due to mesoscale changes in the ambient atmospheric environment.

  18. Uma teoria termodinâmica para brisas: teste utilizando simulações numéricas A thermodynamic theory for breezes: test using numeric simulations

    Directory of Open Access Journals (Sweden)

    Clênia Rodrigues Alcântara

    2008-03-01

    Full Text Available O objetivo deste trabalho foi testar uma teoria termodinâmica em brisas marítimas-terrestres acopladas com brisas de vale-montanha através de simulações numéricas tridimensionais em uma região da costa leste do Nordeste Brasileiro, considerando a presença e a ausência da topografia. Embora o contraste de temperatura entre as superfícies seja importante na formação da brisa, a eficiência termodinâmica é fundamental na determinação da sua intensidade. Tem-se que a inclinação faz com que a diferença de pressão entre dois pontos fique maior durante o dia e menor durante a noite contribuindo para a formação de brisas marítimas mais intensas e de brisas terrestres menos intensas, respectivamente. A máxima queda de pressão ocorre por volta de três horas antes da máxima intensidade da brisa. Isso porque grande parte da energia disponibilizada para as circulações é gasta para vencer dissipação, principalmente, no período diurno, quando esses processos são realmente efetivos. Do ponto de vista puramente termodinâmico a inclinação da montanha atua para intensificar a brisa durante o dia e para enfraquecê-la durante a noite.In this work we test a thermodynamic theory for sea-land breeze coupled with valley-mountain breeze through tri-dimensional numeric simulations. We verify the presence of such a breeze in Northeast Brazil's east coast and perform experiments with and without the topography of the region. Although the temperature contrast between two surfaces is important in forming the breezes, the thermodynamic efficiency is a key parameter for the breeze intensity. The presence of the slope causes the pressure difference between two points to increase during the day and to decrease during the night. This contributes for more intense daytime breeze and less intense nighttime ones. The maximum pressure drop occurs about three hours prior the maximum intensity of the sea breeze. This is because most of the available

  19. Surface current dynamics under sea breeze conditions observed by simultaneous HF radar, ADCP and drifter measurements

    Science.gov (United States)

    Sentchev, Alexei; Forget, Philippe; Fraunié, Philippe

    2017-02-01

    Ocean surface boundary layer dynamics off the southern coast of France in the NW Mediterranean is investigated by using velocity observations by high-frequency (HF) radars, surface drifting buoys and a downward-looking drifting acoustic Doppler current profiler (ADCP). The analysis confirms that velocities measured by HF radars correspond to those observed by an ADCP at the effective depth z f = k -1, where k is wavenumber of the radio wave emitted by the radar. The radials provided by the radars were in a very good agreement with in situ measurements, with the relative errors of 1 and 9 % and root mean square (RMS) differences of 0.02 and 0.04 m/s for monostatic and bistatic radar, respectively. The total radar-based velocities appeared to be slightly underestimated in magnitude and somewhat biased in direction. At the end of the survey period, the difference in the surface current direction, based on HF radar and ADCP data, attained 10°. It was demonstrated that the surface boundary layer dynamics cannot be reconstructed successfully without taking into the account velocity variation with depth. A significant misalignment of ˜30° caused by the sea breeze was documented between the HF radar (HFR-derived) surface current and the background current. It was also found that the ocean response to a moderate wind forcing was confined to the 4-m-thick upper layer. The respective Ekman current attained the maximum value of 0.15 m/s, and the current rotation was found to be lagging the wind by approximately 40 min, with the current vector direction being 15-20° to the left of the wind. The range of velocity variability due to wind forcing was found comparable with the magnitude of the background current variability.

  20. Portafolio Practicum II/III 2011-2012. Grado en Enfermería

    OpenAIRE

    2011-01-01

    El documento incluye información sobre los aspectos básicos previos al inicio de las prácticas clínicas: documentos a consultar, recomendaciones, normas, cómo usar el portafolio-cuaderno de prácticas y un listado con las actuaciones a realizar durante el periodo de prácticas clínicas correspondiente al Practicum II y III. También incluye actividades a realizar y reflexiones sobre lo aprendido. Los Estudiantes registran en el portafolio cuantitativa y cualitativamente la implementación de dich...

  1. ONLINE PRACTICUM MONITORING SYSTEM FOR LYCEUM OF THE PHILIPPINES UNIVERSITY BATANGAS CAMPUS

    OpenAIRE

    Janice E. Velasquez; Jacqueline V. Vengco

    2014-01-01

    The main objective of this study to make the monitoring procedure trouble-free by developing a system which would be accessible through the internet. Students will have their own user accounts which will give them the capability to upload reports and on-site pictures thereby minimizing the time and effort spent in going to and from the company’s location to the university and vice versa. Similarly, the practicum coordinator of the college will be given their own accounts to access, downloa...

  2. Interaction Of Mesoscale Convective Systems With The Land - Sea Breezes Along The Guinea Coast Of West Africa

    Science.gov (United States)

    Coulibaly, A.; Omotosho, B. J.; Sylla, M. B.; Fink, A. H.

    2015-12-01

    1-3 hourly METARS/SYNOP observation data of wind (speed and direction), air temperature over land, covering the period 1983-2012, were used in order to characterize land-sea breezes (LSB) over five coastline stations (Abidjan, Accra, Lomé, Cotonou and Ikeja-Lagos) in the Guinean Coast, West Africa. In additional to this, 8 years (2003-2010) sea surface temperature (SST) data from adjacent Atlantic Ocean and monthly METARS/SYNOP observation data of precipitation (1983-2012) were also used. Based on wind speed and direction, the wind roses of all months over all stations have been plotted. These wind roses reveal that, globally, the northerly winds occurred rarely for the months of February, March, and April at Cotonou (Benin Republic).This is seen for other stations (Lomé and Accra). The night/morning time northerly winds appear at all stations, except Accra where there is no northerly wind or is very weak. According to the stations basis, the period of that night/morning northerly winds varies, except in summer period (July - September), where the normal s/w monsoon winds can weaken override at all stations. Set criteria based on the diurnal reversal of wind direction, and the thermal gradient necessary to drive the wind circulation, was used to identify land-sea breeze days. On station-wide basis, sea-breezes occur, at least all period of year, but less frequent in the summer months, where the minimum value of monthly mean temperature gradient is observed for selected stations.

  3. CULTIVATING PRE-SERVICE TEACHERS’ CLASSROOM MANAGEMENT SKILLS THROUGH TEACHING PRACTICUM: A REFLECTIVE PRACTICE

    Directory of Open Access Journals (Sweden)

    Debora Tri Ragawanti

    2015-01-01

    Full Text Available Classroom management is commonly believed to be the key to the success of an instruction. Many student teachers, however, might find it very challenging to handle their classrooms. It is, therefore, necessary to advance their professional practice in the context of a real classroom such as through teaching practicum and reflective practice. This study is aimed at identifying classroom management problems of student-teachers as revealed in their reflective journal entries and to demonstrate how such journal can help them develop their classroom management skills. The participants were 10 student-teachers of the English Department, Satya Wacana Christian University, Salatiga, Central Java, who underwent their teaching practicum at SMP 2 Salatiga. Through the participants’ journals, it was found that the problems lie in managing critical moments, activity, techniques, grouping and seating, authority, tools, and working with people. Further in this study, both pre- and in-service tertiary teachers, curriculum designers, and policy makers will be taken to deeply examine how reflective practice can help cultivate the pre-service’s classroom management skills and to consider the implication for pedagogical practices and innovations in curriculum development.

  4. Learning to be a midwife in the clinical environment; tasks, clinical practicum hours or midwifery relationships.

    Science.gov (United States)

    Ebert, Lyn; Tierney, Olivia; Jones, Donovan

    2016-01-01

    Discussions continue within the midwifery profession around the number of and type of clinical experiences required to ensure competent midwifery graduates. Introduction of the three year Bachelor of Midwifery in Australia, almost two decades ago, was intended to reduce the pressure students were under to complete their academic requirements whilst ensuring students developed midwifery practice that encapsulates the philosophical values of midwifery. Currently, midwifery students are mandated to achieve a minimum number of clinical skills and Continuity of Care Experience (CCE) relationships in order to register upon completion of their degree. To achieve these experiences, universities require students to complete a number of clinical practicum hours. Furthermore students are required to demonstrate competent clinical performance of a number of clinical skills. However, there is no evidence to date that a set number of experiences or hours ensures professional competence in the clinical environment. The aim of this paper is to promote discussion regarding the mandated requirements for allocated clinical practicum hours, specified numbers of clinical-based skills and CCE relationships in the context of learning to be a midwife in Australia.

  5. Review of: Maddie Breeze: Seriousness and Women’s Roller Derby. Gender, Organization and Ambivalence. London u.a.: Palgrave Macmillan 2015.

    Directory of Open Access Journals (Sweden)

    Wiebke Dierkes

    2016-12-01

    Full Text Available In her autoethnographic study in the field of sports sociology Maddie Breeze presents a captivating analysis of the roller derby scene. Starting from empirical material she develops a new sociological concept of 'seriousness' and '(wanting-to-be-taken-seriously' which contrasts with established, linear and normative models – both are re-conceived as a contradictory and ambivalent practice. Thus, Breeze is able to show how new forms of identity and of organization can be successfully established in processes of transformation, without having to negate or dismiss previous ones. A highly recommendable book, not only for sports sociologists.

  6. A Promising Practicum Pilot--Exploring Associate Teachers' Access and Interactions with a Web-Based Learning Tool

    Science.gov (United States)

    Petrarca, Diana

    2013-01-01

    This paper explores how a small group of associate teachers (i.e., the classroom teachers who host, supervise, and mentor teacher candidates during practicum placements) accessed and interacted with the Associate Teacher Learning Tool (ATLT), a web-based learning tool created specifically for this new group of users. The ATLT is grounded in…

  7. A Model for Providing Guidance Services in Elementary Schools: A Generalist-Preventive Approach. Implemented Model. Maxi II Practicum.

    Science.gov (United States)

    Horne, Sydney B.

    The purpose of this practicum was to develop, implement, and evaluate a model for elementary school guidance at Northwoods Elementary School, if the need for such a model could be demonstrated. The need was demonstrated, the model was developed and tested. Subsequent investigation demonstrated that guidance services were increased as a result of…

  8. The Establishment of a Comprehensive High School Renewal Site in the Erie, Pa. Public Schools. Maxi II Practicum.

    Science.gov (United States)

    Cianflocco, Sam C.

    This practicum report describes in detail the efforts of a High School Task Force made up of 21 teachers to establish and operate a model high school as part of a new 4-4-4 educational plan for the Erie, Pennsylvania, schools. The Strong Vincent Comprehensive High School Renewal Site utilized curriculum revision, quarter course offerings, and…

  9. The Efficacy of Consulting Practicum in Enhancing Students' Readiness for Professional Career in Management Information Systems: An Empirical Analysis

    Science.gov (United States)

    Akpan, Ikpe Justice

    2016-01-01

    Consulting practicum (CP) is a form of experiential learning technique to prepare students for professional careers. While CP has become a popular way to help students acquire the essential practical skills and experience to enhance career readiness and ensure a smooth transition from college to employment, there is a lack of empirical studies…

  10. Effectieve kenmerken van een digitaal biologie practicum in het hoger onderwijs : analyse van logfiles met een onderwijseffectiviteitsmodel

    NARCIS (Netherlands)

    Beetsma, IJtje

    2010-01-01

    Het onderzochte digitale biologie practicum is ingevoerd als vervanging van het gebruik van proefdieren in het onderwijs en wordt al jaren met succes in het universitaire onderwijs gebruikt. De vervanging van het gebruik van proefdieren bestaat uit videobeelden van experimenten. In voorliggend onder

  11. A Critical Look at a Blended English Language Teacher Education Program with an Emphasis on the Practicum

    Science.gov (United States)

    Koç, Ebru Melek

    2016-01-01

    The aim of the present study was to explore what types of difficulties student teachers enrolled in a Bachelor of Arts (B.A.) in English Language Teacher Education program offered in a blended format and their cooperating teachers encountered during the student teacher practicum. The participants were 21 fourth grade student teachers and 12…

  12. German Literature and Culture under "Revue": Learner Autonomy and Creativity through the Theme-Based Theater Practicum

    Science.gov (United States)

    Koerner, Morgan

    2012-01-01

    This article proposes a theatrically oriented, thematically structured course model for the upper level undergraduate German curriculum. The traditional focus on staging a single play in the German foreign language theater practicum neglects theater's potential to explore other literary genres and cultural texts and runs the danger of…

  13. Practicum in a Self-Contained Environment: Pre-Service Teacher Perceptions of Teaching Students with Disabilities

    Science.gov (United States)

    Rust, Ryan; Sinelnikov, Oleg

    2010-01-01

    The purpose of this study was to explore pre-service physical education teacher perceptions of teaching students with disabilities and professional preparation in a self-contained environment during a student teaching practicum. Data collection included formal interviews, informal interviews, direct observation with field notes, and critical…

  14. Teaching Practicum Assessment in Post-Apartheid Teacher Education: Is It Self-Serving or Serving Students?

    Science.gov (United States)

    Davids, M. Noor

    2015-01-01

    This article investigates common understandings and practices of a group of supervisors assessing students during the Teaching Practicum in South Africa. In the light of this context and the need for a constructivist approach to develop students to be able to teach in diverse contexts, the question that the research intends to answer is as…

  15. Articulating Learning Objectives for an Undergraduate Teaching Assistant Program: Merging Teaching Practicum, Leadership Seminar, and Service Learning

    Science.gov (United States)

    Murray, Jeffrey W.

    2015-01-01

    Since its inception in 2009, the Undergraduate Teaching Assistant Program (in the Department of Focused Inquiry at Virginia Commonwealth University) has evolved and expanded into an amalgamation of three distinct but overlapping elements: (i) teaching practicum, (ii) leadership seminar, and (iii) service learning experience. But only recently have…

  16. Investigating the Stress Levels of Early Childhood, Primary and Secondary Pre-Service Teachers during Teaching Practicum

    Science.gov (United States)

    Geng, Gretchen; Midford, Richard; Buckworth, Jenny

    2015-01-01

    This study investigated stress levels of pre-service teachers (PSTs) across three categories of teaching context: early childhood, primary and secondary. This paper focused on exploring the stressors in the completion of tasks in teaching practicum in the three categories of teaching context and an awareness of and access to support systems. The…

  17. Learning to Teach English Language in the Practicum: What Challenges do Non-Native ESL Student Teachers Face?

    Science.gov (United States)

    Gan, Zhengdong

    2013-01-01

    This study investigates the challenges sixteen non-native preservice ESL teachers in a Bachelor of Education (English Language) (BEdEL) programme from Hong Kong experienced in an eight-week teaching practicum. Qualitative data from semi-structured interviews and reflective journals were collected from all 16 participants to obtain a detailed…

  18. Learning "Rules" of Practice within the Context of the Practicum Triad: A Case Study of Learning to Teach

    Science.gov (United States)

    Chalies, Sebastien; Escalie, Guillaume; Stefano, Bertone; Clarke, Anthony

    2012-01-01

    This case study sought to determine the professional development circumstances in which a preservice teacher learned rules of practice (Wittgenstein, 1996) on practicum while interacting with a cooperating teacher and university supervisor. Borrowing from a theoretical conceptualization of teacher professional development based on the postulates…

  19. Online learning management systems (LMS and sense of community: A pre-service practicum perspective

    Directory of Open Access Journals (Sweden)

    Glenn Rideout

    2008-05-01

    Full Text Available This paper examines the impact of the implementation of an online learning management system (LMS on pre-service teachers during their major pre-service practicum. The LMS enabled students to remain connected to peers, professors, and supervisors while new relationships were formed with in-school personnel such as mentor teachers, principals, and students. The quantitative data analysis revealed that pre-service teachers perceived a higher sense of community when it included pre-service teachers only than when it included teaching faculty and part-time practicum supervisors. The online LMS was identified as the best predictor of a sense of community among pre-service teachers, when compared to other variables, and not a significant predictor when community included part-time practicum supervisors. The paper concludes with an examination of the perspectives of provincial Ministries of Education and Teachers Federations in relation to the role and evaluation of educational technology initiatives. Résumé: Cet article examine l’impact de l’implantation d’une plateforme eLearning (LMS sur de futurs enseignants en stage. La plateforme a permis aux étudiants de rester en contact avec leurs pairs, leur professeurs et leurs superviseurs, alors que de nouvelles relations se formaient avec la collectivité de l’école les accueillant pour leur stage (mentor, directeur d’école et élèves. L’analyse des données quantitatives a révélé que les futurs enseignants percevaient un meilleur esprit communautaire quand seuls les futurs enseignants en faisaient partie par opposition à une communauté composée des futurs enseignants, des professeurs de leur programme et les superviseurs à temps partiel de leur stage. La plateforme LMS a été identifiée comme le meilleur prédicteur de l’esprit communautaire chez les futurs enseignants par comparaison avec d’autres variables, et un prédicteur non significatif quand la communauté incluait

  20. Watching Teacher Candidates Watch Themselves: Reflections on a Practicum Program in Turkey

    Directory of Open Access Journals (Sweden)

    Akcan Sumru

    2010-05-01

    Full Text Available This article presents the findings of a study that investigates pre-service English teachers’ reflections on their teaching performance after watching their videotaped lessons in company with their university supervisor. This study, conducted during the spring semester practicum program in the 2007-2008 academic year, examines how the teacher candidates felt about their teaching while watching a video of a real lesson taught in a classroom. The findings of this study suggest that after the teacher candidates watched their own teaching with the supervisor, they made specific comments about teacher talk and about students’ participation and interest in the lesson. The findings also show that the use of video recording in the practicum program provided opportunities for reflection and helped teacher candidates evaluate their performance more critically. Key words: Non-native speaker pre-service English teachers, practicum, reflective teaching, videobased reflection sessions Este artículo presenta los hallazgos de un estudio que investiga las reflexiones de futuros profesores de inglés respecto a su desempeño docente después de haber visto con su asesor de práctica de la universidad las grabaciones de sus propias clases. Este estudio, realizado durante la práctica semestral de primavera en el periodo académico 2007-2008, examina cómo se sintieron los practicantes respecto a su forma de enseñar cuando veían un video de una clase dictada en un salón de clase real. Los hallazgos del estudio sugieren que después de que los practicantes o futuros docentes observaron en compañía de su supervisor su forma de enseñar, hicieron comentarios relacionados especialmente con la forma de hablar de los profesores y con la participación e interés de los estudiantes en la clase. Los hallazgos también muestran que la grabación en video en el programa de práctica docente generó oportunidades para reflexionar y ayudó a los

  1. Utilizing TRMM to Analyze Sea Breeze Thunderstorm Patterns During El Nino Southern Oscillations and Their Effects upon Available Fresh Water for South Florida Agricultural Planning and Management

    Science.gov (United States)

    Cooley, Clayton; Billiot, Amanda; Lee, Lucas; McKee, Jake

    2010-01-01

    Water is in high demand for farmers regardless of where you go. Unfortunately, farmers in southern Florida have fewer options for water supplies than public users and are often limited to using available supplies from surface and ground water sources which depend in part upon variable weather patterns. There is an interest by the agricultural community about the effect weather has on usable surface water, however, research into viable weather patterns during La Nina and El Nino has yet to be researched. Using rainfall accumulation data from NASA Tropical Rainfall Measurement Mission (TRMM) satellite, this project s purpose was to assess the influence of El Nino and La Nina Oscillations on sea breeze thunderstorm patterns, as well as general rainfall patterns during the summer season in South Florida. Through this research we were able to illustrate the spatial and temporal variations in rainfall accumulation for each oscillation in relation to major agricultural areas. The study period for this project is from 1998, when TRMM was first launched, to 2009. Since sea breezes in Florida typically occur in the months of May through October, these months were chosen to be the months of the study. During this time, there were five periods of El Nino and two periods of La Nina, with a neutral period separating each oscillation. In order to eliminate rainfall from systems other than sea breeze thunderstorms, only days that were conducive to the development of a sea breeze front were selected.

  2. METHODS OF EXPERIMENTAL VERIFICATION OF STEINER THEOREM IN PHYSICAL PRACTICUM AND LABORATORY WORK

    Directory of Open Access Journals (Sweden)

    Zharilkasin Iskakov

    2014-07-01

    Full Text Available In this paper, the technique of laboratory work on experimental verification of Steiner’s Theorem in laboratory conditions is developed. To do this, specially designed experimental device was used. The main part of such device is a simple physical pendulum, swinging freely about the axis of suspension, consisting of a cylindrical disc set on a thin rod. To determine the moment of inertia of cylindrical body about the axis of vibrations, property of a physical quantity additivity was used. When processing experimental results, functional approximation by a least squares method was applied; as a result, the empirical expression of Steiner’s Theorem was achieved. Results of experimental studies were very close to the results of theoretical calculations. Laboratory work can be easily repeated for a body of arbitrary shape. The methodology used can be recommended for physical practicum in universities as an effective and easy way of experimental verification of Steiner’s theorem.

  3. The University Teacher role in the Magistery degree Practicum at Infantil and Primary Education

    Directory of Open Access Journals (Sweden)

    Marta Liesa Orús

    2009-10-01

    Full Text Available This article shows the conclusions of an investigation plan which was showed in the Human Sciences Facultity and Education of Huesca, in the election of assistances for the realisation of the Act of Improvement Program of Education, with the tittle of "School Practices I, II and III from the view of the credits ECTS.One of the main aims of this project was to know the attitude of the University teachers before the school practices course, that is why we did a cuestionary to a big number of partners of Faculty Education of Huesca, Zaragoza and Teruel, with the purpose that they could transmit us their thougths and to be able to offer a solution to elaborate and develop the new plans of teacher degree, specially, refered to practicum.

  4. Failure to Fail in a Final Pre-service Teaching Practicum

    Directory of Open Access Journals (Sweden)

    Patricia J. Danyluk

    2015-12-01

    Full Text Available This article presents a Canadian perspective on the issue of failure to fail in Bachelor of Education programs. The issue of failure to fail in Bachelor of Education programs is one that had not been explored in any great detail. What literature does exist focuses on the strain that a teacher experiences when s/he mentors a student teacher (Siebert, Clark, Kilbridge, & Peterson, 2006 and the wide variety of situations that can result in failure (Sudzina & Knowles, 1992. This study examines whether the issue of failure to fail in final pre-service practica exist and, if so, why? Twelve interviews were conducted at a mid-sized Canadian university in Ontario with university supervisors and associate teachers on the topic of teacher candidate failure during the final teaching practicum. All participants had experience with teacher candidates struggling during practicum. Faculty commented on their supervision of student teachers in Ontario, other provinces in Canada, and the United States. Results indicate that both university supervisors and associate teachers find the decision to fail a student teacher difficult, taking an emotional toll on both the supervisor and the student. University faculty report the decision to fail results in additional work for the faculty responsible; however, failure to fail an underperforming student teacher could diminish the reputation of professional programs. Associate teachers feel a sense of betrayal when their recommendations to fail an under-performing student are not followed by the university. These findings have implications for improving the quality of field experiences and support for students, associate teachers, and faculty in Bachelor of Education programs.

  5. Collaborative design and use of an agency feedback form for student clinical practicum experience in community/public health nursing.

    Science.gov (United States)

    Reilly, Janet Resop; Collier, Jill; Edelstein, Janice; Vandenhouten, Chris; Hovarter, Rebecca; Hansen, Judith M; Stewart, Stephanie; Turner, Mary Jo

    2012-01-01

    Evaluation of students in community and public health (C/PH) nursing clinical practica is a challenge, especially when preceptors are expected to evaluate students from different academic nursing programs. The need for a standardized student evaluation tool was identified during federally funded collaborative meetings held between C/PH academic and practice partners in Northeastern Wisconsin. This article focuses on the development and appraisal of the standardized Agency Feedback Form (AFF) for Student Practicum Experience in Community/Public Health Nursing, which was designed to meet the identified need. Four baccalaureate nursing programs implemented the AFF for 3 purposes: (1) to provide a consistent and easy evaluation form for preceptors to complete; (2) to communicate useful information about students' individual professional behaviors observed during practicum; and (3) to increase students' and preceptors' understanding of the population-based nursing interventions, using the Public Health Intervention Wheel. Future uses and implications of the AFF are also discussed.

  6. Teaching effectiveness and learning outcomes of baccalaureate nursing students in a critical care practicum: a lebanese experience.

    Science.gov (United States)

    Makarem, S; Dumit, N Y; Adra, M; Kassak, K

    2001-01-01

    This process-product replicated study examines the relationship between the clinical teacher behavior effectiveness of critical care instructors and baccalaureate nursing students' learning outcomes in a critical care practicum. Teacher behaviors that were found to be significantly associated with student learning outcomes included flexibility, giving opportunity to observe, quality of answering questions, quality of discourse, feedback specificity, and concern for the learner's progress and problems.

  7. A WebCT Discussion Forum during a TESL Practicum: Pre-service Teachers’ Perceptions of Learning

    Directory of Open Access Journals (Sweden)

    Susan Parks

    2010-02-01

    Full Text Available Within teacher education programs, the use of discussion forums offers potential for creating learning communities whereby participants can negotiate meaning and engage in knowledge construction (Lock, 2006; Murphy, 2000. To this end, the present article draws on the findings of a larger research project which focused on a discussion forum activity carried out with pre-service English second language (ESL teachers during a practicum in Francophone schools in the province of Quebec. The specific question addressed in this article is: How do pre-service teachers view the discussion forum activity in relation to the practicum experience? Data were gathered using a survey questionnaire adapted from Arnold and Ducate (2006 and semi-structured interviews. Of particular note with respect to the results is that students who participated in the discussion forum perceived the exchanges as useful in terms of their professional development as teachers. As few studies have focused on the use of discussion forums in conjunction with a practicum, areas for future research have been identified.

  8. Reorganization of Practicum in Initial Teacher Education: A Search for Challenges in Implementation by Ex-Ante Evaluation

    Directory of Open Access Journals (Sweden)

    Laila Niklasson

    2015-10-01

    Full Text Available The background of the study is a perceived need of increasing quality in practice during Initial Teacher Education (ITE in Sweden. In order to achieve higher quality, the government encourages reorganization towards a limited number of practice schools, competence development for supervisors and research focusing on the selected practice schools.  The aim of this study is to present and critically discuss prerequisites for implementation of the reform. The paper focuses on how a preliminary logic model and a SWOT analysis can show challenges encountered during the implementation of the reorganization. By using the logic model and the SWOT analysis an ex-ante evaluation was carried out in two steps. The results disclosed that the motivation behind reorganization, improving the quality of practicum, might meet some challenges. Indicators of higher quality being attained are not provided; the local organization is expected to construct such indicators during the process. In contrast to the challenges the results showed that the implementation was supported by earlier good relations and a common idea of developing practicum in ITE. The implication for implementation is a need to have a dialogue about indicators for quality among different stakeholders in ITE. Without such a dialogue it can be disputed whether the change in practicum was successful.

  9. A numerical study of sea breeze circulation observed at a tropical site Kalpakkam on the east coast of India, under different synoptic flow situations

    Indian Academy of Sciences (India)

    C V Srinivas; R Venkatesan; K M Somayaji; A Bagavath Singh

    2006-10-01

    A simulation study of the sea breeze circulation and thermal internal boundary layer (TIBL) characteristics has been carried out at the tropical site Kalpakkam on the east coast of India, for operational atmospheric dispersion prediction. The community based PSU/NCAR MM5 Mesoscale meteorological model is used for the study. Three cases on typical days in summer (24 May 2003), southwest (SW) monsoon (1 July 2001) winter season (2 February 2003) with different largescale flow pattern are studied. The MM5 model is used with 3 nested domains with horizontal grid resolutions 18 km, 6 km and 2 km and 26 vertical levels. The model is integrated for 24 hours in the above cases with initial and boundary conditions taken from NCEP-FNL analyses data. Observations of 10 meteorological stations and coastal boundary layer experiments conducted at Kalpakkam are used for comparison and validation of the simulation. The characteristics of simulated sea breeze and TIBL at Kalpakkam are seen to vary in the above cases according to the prevailing large-scale winds and surface fluxes. The sea breeze circulation is seen to develop early with larger strength and inland propagation in the summer case under the influence of moderate synoptic wind and strong heating conditions than in the SW monsoon and winter cases. The horizontal and vertical extents of TIBL are found to be larger in the summer case than in other cases. Although model parameters agree in general with observations, all the fine features are not clearly captured and some slowness in model sea breeze development is also seen. The results indicate the need to improve i) the initial conditions by assimilation of available surface/upper air observations to reduce model bias and ii) surface net radiation parameterisation. The model could predict the essential features of the local circulation and further improvement is expected with better initial condition data and incorporation of more realistic surface data.

  10. The role of refinery flaring events and bay breezes on a high surface ozone episode during the Houston, Texas DISCOVER-AQ field campaign

    Science.gov (United States)

    Loughner, C.; Follette-Cook, M. B.; Fried, A.; Pickering, K. E.

    2015-12-01

    The highest observed surface ozone concentrations in the Houston metropolitan area in 2013 occurred on September 25, which coincided with the Texas DISCOVER-AQ (Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality) field campaign. Surface ozone was elevated throughout the Houston metropolitan area with maximum 8-hour average ozone peaking along the western shore of Galveston Bay, reaching 124 ppbv, almost 50 ppbv above the current EPA standard of 75 ppbv. The NASA P-3B aircraft observed plumes from refinery flares west and northwest of Galveston Bay that were transported over the water. Continental air pollution from the north was transported into the Houston metropolitan area where it mixed with locally generated emissions. A bay breeze circulation formed causing pollutants that were transported out over the water in the morning to recirculate back inland where they mixed with freshly emitted pollution near the bay breeze convergence zone. The highest surface ozone concentrations were reported near the bay breeze front. This ozone episode will be presented using measurements made during the DISCOVER-AQ field campaign and a CMAQ model simulation with integrated source apportionment, which tracks the contribution of emissions source groups and regions on ozone concentrations.

  11. The role of bay breezes and regional transport on a high surface ozone episode during the Houston, Texas DISCOVER-AQ field campaign

    Science.gov (United States)

    Loughner, C.; Follette-Cook, M. B.; Pickering, K. E.; Estes, M. J.

    2014-12-01

    The highest observed surface ozone concentrations in the Houston metropolitan area in 2013 occurred on September 25, which coincided with the Texas DISCOVER-AQ (Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality) field campaign. Surface ozone was elevated throughout the Houston metropolitan area. Maximum 8-hour average ozone peaked along the western shore of Galveston Bay, reaching 124 ppbv, almost 50 ppbv above the current EPA standard of 75 ppbv, at La Porte Sylvan Beach. Continental air pollution from the north and northeast was transported into the Houston metropolitan area where it mixed with locally generated emissions. A bay breeze circulation formed causing pollutants that were transported out over the water in the morning to recirculate back inland where they mixed with freshly emitted pollution near the bay breeze convergence zone. The highest surface ozone concentrations were reported near the bay breeze front at La Porte Sylvan Beach. This ozone episode will be presented using measurements made during the DISCOVER-AQ field campaign and WRF and CMAQ model simulations.

  12. Development of Competency of Instruction Quality Scale and Evaluation of Practicum Scale

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    The aim of this study is to develop data collection tools for evaluation of school practice courses and for perceptions of teacher candidates regarding teacher competencies for effective teaching. Three hundred and eighty-eight last year undergraduate students from seven programs of faculties of education at two state universities participated in the study. Items of the 5-point Likert scale were written according to the dimensions of the constructs with respect to the related literature. The items were reviewed by three experts, one of whom is in the educational measurement and two of whom are in the science and biology education departments. Dimensionalities of the two-dimensional Evaluation of Practicum Scale (EPS) and one-dimensional Competency of Instruction Quality Scale (CIQS) were analyzed using factor analysis. Unweighted least squares estimation method and Promax rotation were used in the factor analysis procedures. Cronbach's a coefficients were 0.89 and 0.83 for the two dimensions of EPS and 0.82 for CIQS.

  13. Collaborative Reflection through Dilemma Cases of Science Practical Work during Practicum

    Science.gov (United States)

    Yoon, Hye-Gyoung; Kim, Mijung

    2010-02-01

    In the goal of science teacher education, the role of reflection to cultivate the teacher as a transformative practitioner has been largely recognised. Reflective thinking is crucial for teachers to be mindfully and knowledgeably situated in teaching and transforming their actions. This study looks into the dilemmas of teaching practical work in elementary science classes and the roles of reflective thinking. Five preservice teachers, one inservice teacher, and one science teacher educator participated in the process of collaborative reflection (reflective writing on dilemma cases, sharing, and discussing) of teaching practical work during the preservice teachers' practicum. All participants wrote and shared two cases of his/her own dilemmas after teaching or observing lessons with science experiments. Preservice teachers also participated in a survey questionnaire and interviews to share their perspectives of practical work and the process of reflection. Looking into their reflection and discussion on the dilemmas of teaching through science practical work, the study attempts to explore how to make collaborative learning opportunities through reflective thinking. The findings of this study showed that the dilemmas of science practical work emerged in various dimensions of teachers' expectation and classroom interactions. Discussions on dilemma cases could facilitate reflecting and learning from different perspectives among participants. Based on these findings, we further discuss the implication of interactive reflection and discussion on dilemmas of practical work to enhance science teaching and develop collaborative communities in science teacher education.

  14. VOICES OF PRE-SERVICE ENGLISH TEACHERS: REFLECTING MOTIVATIONS DURING PRACTICUM LEARNING

    Directory of Open Access Journals (Sweden)

    PAULUS KUSWANDONO

    2014-07-01

    Full Text Available After Dewey (1933 and Schön (1983, 1987, education scholars began to look further at the concepts of reflection for learning. Following these concepts, there have been plenty of studies on reflection, particularly those discussing teachers’ classroom experiences and their endeavour to develop professional skills. However, educational practitioners in Indonesia (as in the rest of the world often criticise preservice teachers’ (PSTs lack of content knowledge, which they claim should be ‘prioritised’ during a teacher education course. Such pressing situations may have made it difficult to model or experience reflective practice. Against these odds, this research paper addresses issues related to the identity and professional development of thirteen English PSTs during their campus and school-based practicum in an Indonesian university. This study collected empirical data through PSTs’ reflective journals, questionnaires, individual interviews, focus group discussion, and autobiography. The study examines problems encountered by PSTs, namely their motivations to become teachers. This study signifies that teacher education needs to provide more reflective dialogues to shape PSTs’ identity and professionalism.

  15. A public-policy practicum to address current issues in human, animal, and ecosystem health.

    Science.gov (United States)

    Herrmann, John A; Johnson, Yvette J; Troutt, H Fred; Prudhomme, Thomas

    2009-01-01

    There are recognized needs for cross-training health professionals in human, animal, and ecosystem health and for public health policy to be informed by experts from medical, science, and social science disciplines. Faculty members of the Community Health and Preventive Medicine Section at the University of Illinois at Urbana-Champaign, College of Veterinary Medicine, and the Institute of Government and Public Affairs, University of Illinois at Urbana-Champaign, have offered a public-policy course designed to meet those needs. The course was designed as a practicum to teach students the policy-making process through the development of policy proposals and to instruct students on how to effectively present accurate scientific, demographic, and statistical information to policy makers and to the public. All students substantially met the learning objectives of the course. This course represents another model that can be implemented to help students learn about complex, multifactorial issues that affect the health of humans, animals, and ecosystems, while promoting participation in public health policy development.

  16. Predictors of Taiwanese baccalaureate nursing students' physio-psycho-social responses during clinical practicum.

    Science.gov (United States)

    Chen, Ya-Wen; Hung, Chich-Hsiu

    2014-01-01

    The nursing educational process may contribute to stress in nursing students, particularly during clinical rotations. This descriptive study explored the relationships between perceived stress, coping behaviors, personality traits, and physio-psycho-social responses in a clinical practicum among baccalaureate nursing students and identified predictors for physio-psycho-social responses. A cross-sectional design was employed. One hundred and one juniors enrolled in a four-year baccalaureate nursing program in Taiwan participated in this study. Four structured questionnaires were utilized to collect data. Multiple regression analysis showed that three predictors accounted for 53.2% of the variance in students' physio-psycho-social responses, including perceived stress, students' gender, and personality traits. The implication for nursing educators is providing immediate assistance and appropriate support to guide students through difficult learning when they need. Nursing instructors also should pay attention to students' gender-linked differences and be aware of individuals' personality traits, especially those with emotional instability, unsocial behaviors, and depressive signs.

  17. [An experience applying the teaching strategies of cooperative learning and creative thinking in a mental-health nursing practicum for undergraduates at a technical college].

    Science.gov (United States)

    Huang, Yu-Hsien; Lin, Mei-Feng; Ho, Hsueh-Jen; Chang, Lu-Na; Chen, Shiue

    2015-04-01

    Lack of knowledge and experience is prevalent in undergraduate students who are taking their clinical practicum for mental-health nursing. This issue negatively affects the learning process. This article shares an experience of implementing a practicum-teaching program. This program was developed by the authors to facilitate the cooperative learning and clinical care competence of students. A series of multidimensional teaching activities was designed by integrating the strategies of peer cooperation and creative thinking to promote group and individual learning. Results indicate that the program successfully encouraged the students to participate more actively in the learning process. Additionally, the students demonstrated increased competence in empathetic caring toward patients, stronger friendship relationships with peers, and improved self-growth. The authors hope this teaching program provides a framework to increase the benefits for students of participating in clinical practicums and provides a teaching reference for clinical instructors.

  18. Severe Weather Caused by Heat Island and Sea Breeze Effects in the Metropolitan Area of São Paulo, Brazil

    Directory of Open Access Journals (Sweden)

    Felipe Vemado

    2016-01-01

    Full Text Available The Metropolitan Area of São Paulo (MASP is one of the most populated regions of the planet with one of the largest impervious regions as well. This research work aims to characterize MASP heat island (HI effect and its interaction with the local sea breeze (SB inflow in rainfall amounts and deep convection. The combined SB-HI produces direct circulation over the MASP and produces severe weather and socioeconomic impacts. All SB-HI episodes between 2005 and 2008 are identified and analyzed with surface and upper air measurements, weather radar, and satellite data. The current work indicates that intense SB-HI episodes are related to air and dew point temperatures above 30°C and 20°C, respectively, right after the passage of the SB front over MASP. Results indicate that the precipitation related to SB-HI episodes is up to 600 mm or about four times higher than that in rural or less urbanized areas in its surroundings. Measurements indicate that 74% of SB-HI episodes are related to NW winds in earlier afternoon hours. Moving cold fronts in southern Brazil tend to intensify the SB-HI circulation in MASP. A conceptual model of these patterns is presented in this paper.

  19. Análisis de contenido de la herramienta de evaluación del Practicum en Enfermería

    OpenAIRE

    Perpiñá Galvañ, Juana; Peña Rodríguez, Antonio; Cabañero Martínez, María José; Sanjuán Quiles, Ángela; Ramos-Pichardo, Juan Diego; Oliver-Roig, Antonio; Gabaldón Bravo, Eva María

    2013-01-01

    Las dificultades manifestadas, en los primeros meses de funcionamiento de la herramienta informatizada de evaluación del Practicum del Grado en Enfermería, por alumnos, tutores y profesores hace necesario analizar la pertinencia de los objetivos de aprendizaje y de sus criterios de evaluación incluidos en la herramienta. Se realizó un análisis de contenido de la herramienta de evaluación del Practicum mediante el juicio de expertos. El grupo de expertos estuvo formado por 8 profesores que ana...

  20. El Practicum en Psicopedagogía: análisis comparativo entre áreas de conocimiento

    Directory of Open Access Journals (Sweden)

    Eva Mª ESPIÑEIRA BELLÓN

    2016-01-01

    Full Text Available En el presente artículo presentamos el proceso y los resultados de una investigación en la que, tras reflexionar sobre el concepto de Practicum y, de manera específica, sobre el Practicum de la titulación de Psicopedagogía impartida en la Universidad de A Coruña, se realiza una evaluación teniendo en cuenta la opinión del alumnado que ha cursado dicha materia, en cuanto a la relevancia que le otorga a los objetivos planificados y la posterior consecución de éstos. Los resultados se diferencian teniendo en cuenta el área a la que pertenece el profesorado que lo ha tutorizado. En lo metodológico, es una investigación descriptiva, tipo encuesta, desde la que se interviene en una muestra significativa del alumnado de último curso de la titulación en el año 2012/13 a través de un cuestionario, cuya validez (didáctica y contenido y fiabilidad (consistencia interna han sido debidamente establecidas (juicio de expertos y una experiencia piloto para el cálculo del alfa de Cronbach. Los resultados muestran que el programa de Practicum presenta un buen desarrollo de la mayoría de los objetivos, sobre todo los referidos a habilidades, en donde las medias de los objetivos mejor valorados superan la puntuación de 4. Esto último pone de manifiesto claras líneas de innovación y de mejora en los ámbitos a nivel conceptual y actitudinal.

  1. A Case of Expert-Novice Conversational Reflection During an Initial Education Practicum on the CLIL Approach

    OpenAIRE

    Escobar Urmeneta, Cristina; Evnitskaya, Natalia; Horrillo Godino, Zoraida

    2009-01-01

    III Colloquium on Semi-Immersion in Catalonia III Encuentro sobre Semi-Inmersión en Cataluña In nearly all pre-service teacher education programmes, the most common model of professionalization consists in providing student-teachers with opportunities to apply knowledge gained in a theoretical phase in a systematic, structured and supervised way (Molina Ruiz 2008) during the practicum period, in accordance with the principles of Technical Rationality (Schön 1983). Schön identifies gaps ...

  2. Exploring Reflective Teaching through Informed Journal Keeping and Blog Group Discussion in the Teaching Practicum

    Directory of Open Access Journals (Sweden)

    Insuasty Edgar Alirio

    2010-11-01

    Full Text Available This article reports the findings of a study which examined how student teachers could be empowered as more reflective practitioners through journal keeping and blog group discussions. It was carried out with six student teachers who developed their practicum over six months. Data were collected through journals, blogs, metaphors, conferences and a questionnaire. The results demonstrated that student teachers enriched their perceptions about what reflective teaching implied. Furthermore, journal keeping was approached as an informed process by virtue of which student- teachers could go beyond the descriptive documentation of what happened in their classes. Their journal entries also revealed reflective references, most of which were mainly focused on evaluating teaching, diagnosing and solving problems. Este artículo reporta los resultados de un estudio que examinó cómo se podía potenciar los practicantes como docentes más reflexivos a través del uso de diarios y discusiones mediante blogs. En el estudio participaron seis practicantes, quienes desarrollaron sus prácticas durante seis meses. Los datos se recogieron a través de diarios, blogs, metáforas, conferencias y cuestionarios. Los resultados demostraron que los practicantes enriquecieron sus percepciones acerca de lo que significa la enseñanza reflexiva. Por otra parte, el diligenciamiento del diario, el cual se hizo como un proceso informado, les permitió ir más allá de una etapa descriptiva y enfocarse en la evaluación del proceso de enseñanza, la identificación y solución de los problemas que surgieron en la clase.

  3. A modeling study of convection initiation prior to the merger of a sea-breeze front and a gust front

    Science.gov (United States)

    Abulikemu, Abuduwaili; Xu, Xin; Wang, Yuan; Ding, Jinfeng; Zhang, Shushi; Shen, Wenqiang

    2016-12-01

    Convection initiation (CI) prior to the merger of a sea-breeze front (SBF) with a gust front (GF) in North China is investigated using a real-data Weather Research and Forecasting (WRF) simulation with a high resolution of 444.4 m. The overall evolution of the GF and SBF is well reproduced by the simulation. The GF was produced by the decaying convective storm over northern Beijing, while the SBF came from the Bohai Sea. Several convective cells were generated between the two fronts even though they were still about 25-30 km far away from each other. During the development of these cells, the low-level convergence and conditional instability averaged within the intermediate area between the two fronts were enhanced significantly, both of which favored the initiation of convection. Vertical momentum budgets were conducted in the intermediate area as well as along the backward trajectories of parcels within a selected convective cell. The vertical acceleration was decomposed into dynamic and buoyant components, respectively. The diagnostic results showed that the dynamic acceleration dominated in the low level, while buoyant acceleration became evident only when the parcel reached a high altitude above 2 km. Therefore the dynamic forcing appeared to be more relevant to CI. The dynamic acceleration was further decomposed into four terms based on anelastic approximation. The positive dynamic acceleration was mainly caused by fluid extension associated with the low-level convergence, while fluid twisting in the vertical contributed negatively to the dynamic acceleration. The other two terms related to horizontal curvature and height variation of density were negligibly small.

  4. Development of a Mobility Training Program for Young Adult Trainable Mentally Handicapped Clients at the Ray Graham Training Center. Maxi II Practicum Report.

    Science.gov (United States)

    Jordan, Ellen M.

    Provided is a practicum report on a travel training program initiated at the Ray Graham Training Center (Chicago, Illinois) for 40 trainable mentally handicapped young adults. The center is described in terms of the geographic area and clients served, staff roles, parent role, and curriculum. It is noted that a prime impetus for the development of…

  5. Pre-Service Science Teachers' Views on Their Online Argumentation about What Is Happening in Middle School Science Classrooms during Their Practicum Period

    Science.gov (United States)

    Kaya, Osman Nafiz; Dogan, Alev; Kilic, Ziya; Ebenezer, Jazlin

    2004-01-01

    In this study, Pre-service Science Teachers' (PSTs) views about the potential benefits and existing barriers of their argumentation on the World Wide Web about what is happening in middle school science classrooms during two semesters of their practicum experiences were investigated. "Special Web Group" called the "Collaborative Action Research in…

  6. Understanding Legitimate Teacher Authority in a Cross-Cultural Teaching Context: Pre-Service Chinese Language Teachers Undertaking Teaching Practicum in International Schools in Hong Kong

    Science.gov (United States)

    Lai, Chun; Gu, Mingyue; Hu, Jingjing

    2015-01-01

    Legitimate teacher authority is fundamental to effective teaching, but is often a thorny issue that teachers need to grapple with when teaching in cross-cultural teaching contexts. By interviewing 18 pre-service Chinese language teachers on their understanding of legitimate teacher authority throughout teaching practicum at international schools…

  7. What Type of Feedback Do Student Teachers Expect from Their School Mentors during Practicum Experience? The Case of Spanish EFL Student Teachers

    Science.gov (United States)

    Martínez Agudo, Juan de Dios

    2016-01-01

    Mentorship represents a vital component in all teacher education programmes since mentors' feedback plays an essential role in shaping candidate teachers' professional identity. The quality of feedback provided by school mentors during the practicum experience constitutes the main focus of this study. This research paper aimed at investigating…

  8. Identification and interpretation of representative ozone distributions in association with the sea breeze from different synoptic winds over the coastal urban area in Korea.

    Science.gov (United States)

    Hwang, Mi-Kyoung; Kim, Yoo-Keun; Oh, In-Bo; Lee, Hwa Woon; Kim, Cheol-Hee

    2007-12-01

    To aid the studies of long-term impact assessment of cumulative ozone (O3) exposures, the representative 8-hr O3 pollution patterns have been identified over the Greater Seoul Area (GSA) in Korea. Principal component analysis and two-stage clustering techniques were used to identify the representative O3 patterns, and numerical and observational analyses were also used to interpret the identified horizontal distribution patterns. The results yielded three major O3 distribution patterns, and each of the three patterns was found to have strong correlations with local and synoptic meteorological conditions over the GSA. For example, pattern 1, accounting for 46% of O3 concentration distributions, mostly occurred under relatively weak westerly synoptic winds. The predominant features of this pattern were infrequent high O3 levels but a distinct gradient of O3 concentration from the western coastal area to the eastern inland area that was mainly induced by the local sea breeze. Pattern 2, accounting for 31% of O3 concentration distributions, was found with higher O3 levels in the western coastal area but lower in the eastern inland area. This is due to the modified sea breeze under the relatively stronger easterly opposing synoptic wind, affecting the high O3 occurrence in the western coastal area only. However, pattern 3, accounting for 21% of O3 concentration distributions, showed significantly higher O3 concentrations over the whole GSA mainly due to the retarded and slow-moving sea-breeze front under the weak opposing synoptic flow. Modeling study also indicated that local and synoptic meteorological processes play a major role in determining the high O3 concentration distribution patterns over the GSA.

  9. A scale model wind tunnel study of dispersion in the Cleveland area. Laboratory simulation of lake breeze effects on diffusion from ground level emissions

    Science.gov (United States)

    Hoydysh, W. G.

    1974-01-01

    A wind tunnel simulation of the diffusion patterns in a sea breeze was attempted. The results indicate that the low level onshore flow was well simulated for neutral, stable, unstable, and elevated inversion conditions. Velocity, turbulence, shear stress, and temperature data were taken, and the spread of emissions from ground level sources was investigated. Comparison is made with theoretical predictions by E. Inoue and with the open, homogeneous plane field results of Pasquill. Agreement with the predictions by Inoue is good, and the comparison with Pasquill's results shows that the wind tunnel flows are shifted two categories towards more stable. The discrepancy may be explained as a matter of averaging time.

  10. INTERSTELLAR NEUTRAL HELIUM IN THE HELIOSPHERE FROM IBEX OBSERVATIONS. IV. FLOW VECTOR, MACH NUMBER, AND ABUNDANCE OF THE WARM BREEZE

    Energy Technology Data Exchange (ETDEWEB)

    Kubiak, Marzena A.; Swaczyna, P.; Bzowski, M.; Sokół, J. M. [Space Research Centre of the Polish Academy of Sciences (CBK PAN), 00-716 Warsaw (Poland); Fuselier, S. A.; McComas, D. J. [Southwest Research Institute, San Antonio, TX (United States); Galli, A.; Wurz, P. [Physikalisches Institut, Universität Bern, Bern (Switzerland); Heirtzler, D.; Kucharek, H.; Leonard, T. W.; Möbius, E.; Park, J.; Schwadron, N. A., E-mail: mkubiak@cbk.waw.pl [Space Science Center and Department of Physics, University of New Hampshire, Durham, NH (United States)

    2016-04-15

    Following the high-precision determination of the velocity vector and temperature of the pristine interstellar neutral (ISN) He via a coordinated analysis summarized by McComas et al., we analyzed the Interstellar Boundary Explorer (IBEX) observations of neutral He left out from this analysis. These observations were collected during the ISN observation seasons 2010–2014 and cover the region in the Earth's orbit where the Warm Breeze (WB) persists. We used the same simulation model and a parameter fitting method very similar to that used for the analysis of ISN He. We approximated the parent population of the WB in front of the heliosphere with a homogeneous Maxwell–Boltzmann distribution function and found a temperature of ∼9500 K, an inflow speed of 11.3 km s{sup −1}, and an inflow longitude and latitude in the J2000 ecliptic coordinates 251.°6, 12.°0. The abundance of the WB relative to ISN He is 5.7% and the Mach number is 1.97. The newly determined inflow direction of the WB, the inflow directions of ISN H and ISN He, and the direction to the center of the IBEX Ribbon are almost perfectly co-planar, and this plane coincides within relatively narrow statistical uncertainties with the plane fitted only to the inflow directions of ISN He, ISN H, and the WB. This co-planarity lends support to the hypothesis that the WB is the secondary population of ISN He and that the center of the Ribbon coincides with the direction of the local interstellar magnetic field (ISMF). The common plane for the direction of the inflow of ISN gas, ISN H, the WB, and the local ISMF is given by the normal direction: ecliptic longitude 349.°7 ± 0.°6 and latitude 35.°7 ± 0.6 in the J2000 coordinates, with a correlation coefficient of 0.85.

  11. Modelling the chemistry and transport of bromoform within a sea breeze driven convective system during the SHIVA Campaign

    Science.gov (United States)

    Hamer, P. D.; Marécal, V.; Hossaini, R.; Pirre, M.; Warwick, N.; Chipperfield, M.; Samah, A. A.; Harris, N.; Robinson, A.; Quack, B.; Engel, A.; Krüger, K.; Atlas, E.; Subramaniam, K.; Oram, D.; Leedham, E.; Mills, G.; Pfeilsticker, K.; Sala, S.; Keber, T.; Bönisch, H.; Peng, L. K.; Nadzir, M. S. M.; Lim, P. T.; Mujahid, A.; Anton, A.; Schlager, H.; Catoire, V.; Krysztofiak, G.; Fühlbrügge, S.; Dorf, M.; Sturges, W. T.

    2013-08-01

    We carry out a case study of the transport and chemistry of bromoform and its product gases (PGs) in a sea breeze driven convective episode on 19 November 2011 along the North West coast of Borneo during the "Stratospheric ozone: Halogen Impacts in a Varying Atmosphere" (SHIVA) campaign. We use ground based, ship, aircraft and balloon sonde observations made during the campaign, and a 3-D regional online transport and chemistry model capable of resolving clouds and convection explicitly that includes detailed bromine chemistry. The model simulates the temperature, wind speed, wind direction fairly well for the most part, and adequately captures the convection location, timing, and intensity. The simulated transport of bromoform from the boundary layer up to 12 km compares well to aircraft observations to support our conclusions. The model makes several predictions regarding bromine transport from the boundary layer to the level of convective detrainment (11 to 12 km). First, the majority of bromine undergoes this transport as bromoform. Second, insoluble organic bromine carbonyl species are transported to between 11 and 12 km, but only form a small proportion of the transported bromine. Third, soluble bromine species, which include bromine organic peroxides, hydrobromic acid (HBr), and hypobromous acid (HOBr), are washed out efficiently within the core of the convective column. Fourth, insoluble inorganic bromine species (principally Br2) are not washed out of the convective column, but are also not transported to the altitude of detrainment in large quantities. We expect that Br2 will make a larger relative contribution to the total vertical transport of bromine atoms in scenarios with higher CHBr3 mixing ratios in the boundary layer, which have been observed in other regions. Finally, given the highly detailed description of the chemistry, transport and washout of bromine compounds within our simulations, we make a series of recommendations about the physical and

  12. Modelling the chemistry and transport of bromoform within a sea breeze driven convective system during the SHIVA Campaign

    Directory of Open Access Journals (Sweden)

    P. D. Hamer

    2013-08-01

    Full Text Available We carry out a case study of the transport and chemistry of bromoform and its product gases (PGs in a sea breeze driven convective episode on 19 November 2011 along the North West coast of Borneo during the "Stratospheric ozone: Halogen Impacts in a Varying Atmosphere" (SHIVA campaign. We use ground based, ship, aircraft and balloon sonde observations made during the campaign, and a 3-D regional online transport and chemistry model capable of resolving clouds and convection explicitly that includes detailed bromine chemistry. The model simulates the temperature, wind speed, wind direction fairly well for the most part, and adequately captures the convection location, timing, and intensity. The simulated transport of bromoform from the boundary layer up to 12 km compares well to aircraft observations to support our conclusions. The model makes several predictions regarding bromine transport from the boundary layer to the level of convective detrainment (11 to 12 km. First, the majority of bromine undergoes this transport as bromoform. Second, insoluble organic bromine carbonyl species are transported to between 11 and 12 km, but only form a small proportion of the transported bromine. Third, soluble bromine species, which include bromine organic peroxides, hydrobromic acid (HBr, and hypobromous acid (HOBr, are washed out efficiently within the core of the convective column. Fourth, insoluble inorganic bromine species (principally Br2 are not washed out of the convective column, but are also not transported to the altitude of detrainment in large quantities. We expect that Br2 will make a larger relative contribution to the total vertical transport of bromine atoms in scenarios with higher CHBr3 mixing ratios in the boundary layer, which have been observed in other regions. Finally, given the highly detailed description of the chemistry, transport and washout of bromine compounds within our simulations, we make a series of recommendations about

  13. Atmospheric boundary layer in a mountain valley during katabatic wind and valley breeze. Atmosphaerische Grenzschicht in einem Gebirgstal bei Berg- und Talwind

    Energy Technology Data Exchange (ETDEWEB)

    Freytag, C.

    1988-06-01

    This work is an attempt to investigate physical relationships during katabatic wind and valley breeze in a large Alpine valley. Being experimental in character, the work is oriented to measuring results. From measurements along the axis of the valley and in the adjacent medium-range mountains, as they were carried out during the MERKUR experiment, the budgets of mass, energy, and impulse for individual areas of the valley atmosphere could be calculated. These budgets serve as basic data for investigating the circulation, energetics, and dynamics of the mountain wind system. The introductory paragraphs give a brief overview on the state of research and open questions. The description of the experiment and of the courses of katabatic wind and valley breeze during the case study make up the second part of the work. The main part comprises the setting down of budget equations and the demonstration of the time curve and spatial structure of the individual terms. The questions raised are then discussed in the light of the author's measurements and other authors' results. Conclusions from the budget analyses are completed by simple model calculations. (orig.).

  14. [The relationship between the contents and the level of achievement of objectives in an occupational health nursing practicum].

    Science.gov (United States)

    Nakatani, Junko; Hara, Yoshiko; Ikeda, Tomoko; Ishihara, Itsuko

    2010-03-01

    The purpose of this study was to evaluate the program and teaching methods of the occupational health nursing practicum in order to enforce students' learning experience in the clinical practice. Self-evaluation sheets graded from levels 1 to 4 were from 63 students, and statistical analysis was performed in relation to their performance levels. The results of the analysis of 63 students' performance sheets indicated that the students achieved 3 points above average in all 14 course objectives. Scales analysis of the students' evaluation sheets also revealed that students' achievement levels were lower at the Industrial Health Organization in comparison with those at the industrial enterprises. To make students' practice more valuable, students' assessment skills of the workers and working environment should be emphasized in the classroom teaching and experience of learning at the laboratory. Moreover, the course objectives should be sufficiently linked to the practice areas in order to differentiate between the features of the Health organizations and enterprises.

  15. A case study of the Scaffolding Clinical Practicum Model: is it culturally competent for Hispanic nursing students?

    Science.gov (United States)

    Lujan, Josefina; Vasquez, Rebecca

    2010-07-01

    The Institute of Medicine, Office of Minority Health, and the Health Resources and Services Administration have called for culturally competent teaching methods to promote the success of Hispanic nursing students. The article responds to this call by analyzing an innovative clinical practicum teaching method, the Scaffolding Clinical Model, in relation to the cultural competence needs of Hispanic nursing students. The analysis is presented through a case study of a cohort of predominantly (90%) Hispanic baccalaureate nursing students at a university on the United States-Mexico border. The cultural competence of the Scaffolding Clinical Model is analyzed by identifying how well it acknowledges and fosters the application of the four metaparadigms of Hispanic culture--conquest, collectivism, familism, and personalism--for Hispanic students. The metaparadigms are described and specific examples are offered about how the Model promotes application of the metaparadigms to accomplish cultural competence for Hispanic students. Recommendations for educators are also presented.

  16. Perspectives of Implementers on the Student Teacher Practicum Program of a Philippine University: Inputs for Program Improvement

    Directory of Open Access Journals (Sweden)

    Generoso N. Mazo

    2015-11-01

    Full Text Available This study sought to determine the perspectives of the 316 program implementers of the Student Teacher Practicum Program in the Leyte Normal University, Tacloban City. Using the descriptive survey method the inquiry focused on the importance, objectives, relevance, and competencies of the program. The Statistical Program for Social Sciences (SPSS was used to test the level of significance between the perspectives of “in-campus” and “off-campus” respondents. The implementers construed the program as Very Important, Very Effective in attaining its objectives, Very Relevant, and the competencies Very Useful. The null hypotheses were not rejected on the aspects of importance, attaining the objectives and competencies while on the aspect of relevance it was rejected.

  17. 机械设计基础课程设计教学探索%Exploration of teaching method on mechanical design basic practicum

    Institute of Scientific and Technical Information of China (English)

    黄永玉; 李积元

    2015-01-01

    Practicum of mechanical design basic is an important practical teaching link,through the practicum,it can enable students to use the theory and method of mechanical design more fully,to grasp the general rules,cultivate the ability to solve practical problems in mechanical engineering. There are some problems in practicum such as lacking awareness of the team,having no enough attention to the task, shortage of calculation and drawing power. In view of the problems in practicum,it's necessary to carry out the reform from design topic,process tracking,assessment and curriculum teaching. Then the suggestions about synergy between teaching and practicum,topic diversification,innovation method,application of computer technology,improving evaluation method and so on were be recommended,in order to mobilize the enthusiasm of the students,improve the quality of practicum.%机械设计基础课程设计是重要的实践性教学环节,通过课程设计,使学生综合运用所学的机械设计的理论知识和方法,掌握设计的一般规律,培养解决机械工程中实际问题的能力.鉴于目前课程设计中普遍存在学生对设计任务重视不够、缺乏团队意识以及计算和画图能力不足等问题,有必要从课程设计的选题、过程跟踪、考核以及课程的教学方面加以改革,提出了理论授课与课程设计相结合、设计题目的多样化、引入创新方法和计算机技术以及考核方法的改进等建议,从而调动学生的积极性,提高课程设计的质量.

  18. Wind: backing the breeze

    Energy Technology Data Exchange (ETDEWEB)

    Wood, Elisa

    2005-11-15

    Wind development in the US rises when the 1.9 cents/kWh production tax credit (PTC) is in force and drops when it languishes. In 2005 Congress renewed the subsidy before it expired, giving the industry more than two years of assurance that the credit will be in force. The American Wind Energy Association predicts that the United States will have seen 2500 MW of new wind capacity installed during 2005, a record-breaker with almost 50% more development than the previous record year, 2001. Beyond that, the trade group expects strong and steady growth of 2000 MW during 2006 and 2007, the year the credit once again ends. Emerging Energy Research, an independent firm that analyses wind markets, technologies and strategies, forecasts that wind development could reach 3000 MW in 2006, and rise even higher in 2007. 2004 saw a meagre 389 MW of new wind projects caused by the expiry of PTC. The author reviews the demand for wind energy in the US, offshore wind potential - estimated at 900,000 MW, and emerging companies. (UK)

  19. Analyses on characteristics of sea-land breeze over Donghai island of Zhanjiang in February of 2011%湛江东海岛二月海陆风环流特征研究

    Institute of Scientific and Technical Information of China (English)

    徐峰; 王晶; 张羽; 张书文; 黄克鑫

    2012-01-01

    The average wind characteristics and sea-land breeze characteristics are analyzed by using the data of wind profiler during February 2011 on Donghai island of Zhanjiang. The results show that: the prevailing wind direction is northeasterly on Donghai island during February 2011 at an altitude of 150 m and the total frequency of occurrences of three directions E, ENE, NE is 66. 6% , in contrast, the total frequency of occurrences of westerly is only 1 % . There is an obvious difference of occurrence frequency between westerly winds and easterly winds. The hourly changes of average monthly wind speed is restricted to small range about 1 m/s from 1:00 to 15:00; and fluctuation becomes larger during 15:00 to 20:00, the maximal speed of 2. 1 m/s appears at 16:00. In February, only two days meet the conditions of sea-land hreeze. In sea-!and breeze day, the common duration of sea breeze is from 13:00 to 20:00, lasting 7 h, and land breeze's common duration is from 2:00 to 7:00, lasting 5 h. The mean speed of land breeze is 0. 8 m/s, which are smaller than 2. 1 m/s of sea breeze. The vertical height of land breezeis about 1200 m during the sea-land breeze day, which differs slightly from sea breeze. The wind speeds of both sea breeze ami land breeze have the similar (rends of increasing first and then decreasing with increasing altitude. The maximal wind speed of sea breeze appears at 750 m, and that of land breeze appears at 500 m. The sea breeze circulation is much stronger than land breeze in the region of 500 to 750 m height. The wind direction basically remains unchanged above 2 km and that is the large-scale uniform systematic west wind circulation.%利用2011年2月湛江东海岛风廓线雷达资料,系统分析了湛江东海岛2月平均风场特征及海陆风特征,结果表明:2月湛江东海岛150 m高度处以东偏北出现频率最大,在E、ENE和NE三个方位的风向出现频率之和为66.6%,偏西七个方位的风向出现频率之和仅为1

  20. Brain Basics

    Medline Plus

    Full Text Available ... News About Us Home > Health & Education > Educational Resources Brain Basics Introduction The Growing Brain The Working Brain ... to mental disorders, such as depression. The Growing Brain Inside the Brain: Neurons & Neural Circuits Neurons are ...

  1. Brain Basics

    Science.gov (United States)

    ... News About Us Home > Health & Education > Educational Resources Brain Basics Introduction The Growing Brain The Working Brain ... to mental disorders, such as depression. The Growing Brain Inside the Brain: Neurons & Neural Circuits Neurons are ...

  2. The Role of In-Service Teacher in Supervising Pre-Service Teachers during Teaching Practicum Program

    Directory of Open Access Journals (Sweden)

    Diah Latifah

    2015-01-01

    Full Text Available This study analyzes the role of in-service teacher in supervising the pre-service teachers during the Teaching Practicum Program and in building the pre-service teachers’ character to be competent music teachers in the future. This study implements narrative inquiry as the method of research. Narrative inquiry method explains the variety of cases during the process of supervision by the in-service teacher. In addition, the research was held in Pasundan 8 Senior High School Bandung and was analyzed further by using qualitative methods with interactive analysis as it is formulated in the research question of this study. Results show that the supervision by an in-service teacher has been successfully enhanced the ability of pre-service teachers in teaching art and culture, particularly music lesson. The competence of pre-service teachers can be achieved by giving them examples, model, and music experience from in-service of the pre-service teachers.

  3. Brain herniation

    Science.gov (United States)

    ... herniation; Uncal herniation; Subfalcine herniation; Tonsillar herniation; Herniation - brain ... Brain herniation occurs when something inside the skull produces pressure that moves brain tissues. This is most ...

  4. Florida Agriculture - Utilizing TRMM to Analyze Sea Breeze Thunderstorm Patterns During El Nino Southern Oscillations and Their Effects Upon Available Fresh Water for South Florida Agricultural Planning and Management

    Science.gov (United States)

    Billiot, Amanda; Lee, Lucas; McKee, Jake; Cooley, Zachary Clayton; Mitchell, Brandie

    2010-01-01

    This project utilizes Tropical Rainfall Measuring Mission (TRMM) and Landsat satellite data to assess the impact of sea breeze precipitation upon areas of agricultural land use in southern Florida. Water is a critical resource to agriculture, and the availability of water for agricultural use in Florida continues to remain a key issue. Recent projections of statewide water use by 2020 estimate that 9.3 billion gallons of water per day will be demanded, and agriculture represents 47% of this demand (Bronson 2003). Farmers have fewer options for water supplies than public users and are often limited to using available supplies from surface and ground water sources which depend in part upon variable weather patterns. Sea breeze thunderstorms are responsible for much of the rainfall delivered to Florida during the wet season (May-October) and have been recognized as an important overall contributor of rainfall in southern Florida (Almeida 2003). TRMM satellite data was used to analyze how sea breeze-induced thunderstorms during El Nino and La Nina affected interannual patterns of precipitation in southern Florida from 1998-2009. TRMM's Precipitation Radar and Microwave Imager provide data to quantify water vapor in the atmosphere, precipitation rates and intensity, and the distribution of precipitation. Rainfall accumulation data derived from TRMM and other microwave sensors were used to analyze the temporal and spatial variations of rainfall during each phase of the El Nino Southern Oscillation (ENSO). Through the use of TRMM and Landsat, slight variations were observed, but it was determined that neither sea breeze nor total rainfall patterns in South Florida were strongly affected by ENSO during the study period. However, more research is needed to characterize the influence of ENSO on summer weather patterns in South Florida. This research will provide the basis for continued observations and study with the Global Precipitation Measurement Mission.

  5. El Practicum en los estudios de Pedagogía de la Universidad de Oviedo. Estudio empírico desde la perspectiva de sus protagonistas: alumnado, tutores y profesorado

    OpenAIRE

    Hevia Artime, Isabel

    2009-01-01

    Estudio centrado en el análisis del Practicum de Pedagogía en la Facultad de Ciencias de la Educación de la Universidad de Oviedo desde la perspectiva de sus protagonistas (alumnos/as, profesores/as y tutores/as). El objetivo principal de éste es mejorar la calidad formativa de Practicum a partir de las demandas realizadas por estas personas y de los ajustes necesarios derivados de los cambios en el Sistema Educativo Superior en el contexto europeo. La primera parte del trabajo consta de m...

  6. The “ Journey to Becoming” Pre - Service T eachers’ Experiences and Understandings of Rural School Practicum in a South African Context

    Directory of Open Access Journals (Sweden)

    Tabitha Grace Mukeredzi

    2016-02-01

    Full Text Available That rural schools suffer from issues of “hard to staff” and “harder to stay” has been well documented in extant literature. However, the literature seems to indicate inadequate teacher preparation for work in rural schools. Literature also demonstrates that teaching in rural settings ostensibly requires relevant knowledge and, skills to cope with various eventualities, and complexities in those contexts. One way to cope with these complexities is for teacher education programmes to adequately prepare pre-service teachers for work in rural environments. This paper reports the experiences and understandings of 15 Bachelor of Education student teachers who took part in a four-week residential teaching practice whilst living alongside the community in a rural South African setting. The researcher sought to understand their experiences and conceptions of rural school teaching during their professional “journeys to becoming” professionals through this form of residential practicum in a rural setting. The pre-service teachers’ daily reflective journals and audio-taped collaborative reflection sessions constitute the data of evolving constructions of the value of this rural residential practicum towards their understanding of rurality, rural teaching and rural life as they develop as teachers. The paper illustrates that exposure to rurality in teacher preparation promotes better understanding of rural issues and pedagogy, dispelling myths and misconceptions and, broadening students’ career prospects in these settings which may ultimately foster interest in country teaching

  7. Research on the Interaction of Tianjin Urban Heat Island Circulation and Sea Breeze Circulation%天津地区城市热岛环流与海风环流相互作用的研究

    Institute of Scientific and Technical Information of China (English)

    东高红; 尉英华; 解以扬; 刘一玮; 李英华

    2015-01-01

    Using the mesoscale TJ-WRF model data and encryption automatic weather station (AWS)data, etc.,we analyze the distribution characteristics of Tianjin urban heat island circulation and sea breeze cir-culation as well as the interaction of them.Through several typical weather cases (Local strong thunder-storms seen in urban areas and the weather without any processes affected by the sea breeze),the trigger mechanism of the interaction between urban heat island circulation and sea breeze circulation for local thun-derstorms is analyzed.The results show that the extended height of urban heat island circulation is near 800 hPa,spatial extention is about 20 km,and the upward motion is obvious.The extended height of sea breeze circulation is near 800-750 hPa and spatial extention is about 40-60 km.The stretch height of the sea breeze front is about 950-900 hPa in the forefront of the sea breeze circulation,and the upward speed is 0.2 m·s-1 on average,slightly stronger than the heat island circulation.The sea breeze can weaken the urban heat island effect while the urban heat island can block the sea breeze circulation.With the sea breeze circulation pushed near to the urban,the sea breeze circulation and the urban heat island circulation encounter,then the two circulations get superimposed and the upward motion is significantly strength-ened,causing the maximum upward speed to go up to 0.6 m·s-1 .Under the favorable weather conditions the local severe thunderstorms can be triggered.%利用中尺度数值模式(TJ-WRF)模拟资料及天津加密自动气象站资料等,选取几个典型天气过程(城区附近局地强雷暴天气过程、受海风影响明显的无天气过程)个例,分析研究天津城市热岛环流与海风环流的空间结构特征及相互作用;重点对城市热岛环流与海风环流相互作用触发局地强雷暴的机制进行分析。结果表明:城市热岛环流的伸展高度基本在800 hPa

  8. Brain Basics

    Medline Plus

    Full Text Available ... Basics will introduce you to some of this science, such as: How the brain develops How genes and the environment affect the brain The basic structure of the brain How different parts of the brain communicate and work with each other How changes in the brain ...

  9. Brain Fingerprinting

    Directory of Open Access Journals (Sweden)

    Ravi Kumar

    2012-12-01

    Full Text Available Brain Fingerprinting is a scientific technique to determine whether or not specific information is stored in an individual's brain by measuring a electrical brain wave response to Word, phrases, or picture that are presented on computer screen. Brain Fingerprinting is a controversial forensic science technique that uses electroencephalography (EEG to determine whether specific information is stored in a subject's brain.

  10. Brain Fingerprinting

    Directory of Open Access Journals (Sweden)

    ravi kumar

    2012-12-01

    Full Text Available Brain Fingerprinting is a scientific technique to determine whether or not specific information is stored in an individual's brain by measuring a electrical brain wave response to Word, phrases, or picture that are presented on computer screen. Brain Fingerprinting is a controversial forensic science technique that uses electroencephalograph y (EEG to determine whether specific information is stored in a subject's brain

  11. Brain Tumors

    Science.gov (United States)

    A brain tumor is a growth of abnormal cells in the tissues of the brain. Brain tumors can be benign, with no cancer cells, ... cancer cells that grow quickly. Some are primary brain tumors, which start in the brain. Others are ...

  12. 高职院校法律专业实践教学存在的问题与对策%Practicum for Law Major Students in Higher Vocational Colleges:Problems and Countermeasures

    Institute of Scientific and Technical Information of China (English)

    文川

    2015-01-01

    Law program in higher vocational college demands extensive practice, and practicum is of great importance to the cultivation of students' professional competency. However, there are deviations in value orientation of practicum of law pro-gram in China's higher vocational colleges:the practicum is marginalized and in lack of uniqueness, the practicum teaching platform is disjointed with the real jobs in society, the coordination mechanism in students fostering is missing, etc. In order to correct the deviations, this paper holds that we should stress on practice instead of theory, focus on non judicial personnel cultivation instead of judicial personnel cultivation, turn from the single and one-way education toward multiple and coordi-nated education, and create own uniqueness in practicum design instead of using the featureless model.%高职法律专业是实践性很强的专业,实践教学对培养学生法律运用能力至关重要。我国高职法律专业实践教学价值取向存在偏离:实践教学被边缘化、选择的实践教学平台与实际就业岗位脱节、实践教学缺乏自身特色、协同育人机制缺失等。纠正偏离需要由重理论向重实践转变、由重司法型人才培养向重非司法型人才培养转变、由单一单向育人向多元协同育人转变、由趋同实践教学向特色实践教学转变。

  13. Brain components

    Science.gov (United States)

    ... can make complex movements without thinking. The brain stem connects the brain with the spinal cord and is composed of ... structures: the midbrain, pons, and medulla oblongata. The brain stem provides us with automatic functions that are necessary ...

  14. Brain surgery

    Science.gov (United States)

    Craniotomy; Surgery - brain; Neurosurgery; Craniectomy; Stereotactic craniotomy; Stereotactic brain biopsy; Endoscopic craniotomy ... cut depends on where the problem in the brain is located. The surgeon creates a hole in ...

  15. Brain Malformations

    Science.gov (United States)

    Most brain malformations begin long before a baby is born. Something damages the developing nervous system or causes it ... medicines, infections, or radiation during pregnancy interferes with brain development. Parts of the brain may be missing, ...

  16. Brain Basics

    Medline Plus

    Full Text Available ... science, such as: How the brain develops How genes and the environment affect the brain The basic ... that with brain development in people mental disorders. Genes and environmental cues both help to direct this ...

  17. Brain Basics

    Medline Plus

    Full Text Available ... can lead to mental disorders, such as depression. The Growing Brain Inside the Brain: Neurons & Neural Circuits ... tailored treatments, and possibly prevention of such illnesses. The Working Brain Neurotransmitters Everything we do relies on ...

  18. Harvesting wind energy from the sea breeze in peri-urban coastal areas by means of small scale wind turbines - Case study: Viladecans, Llobregat Delta, northeast of Iberian Peninsula

    Science.gov (United States)

    Rojas, Jose I.; Cabrera, Barbara; Mazon, Jordi

    2016-04-01

    Wind speed data recorded during 18 years (1993-2010) in the Llobregat Delta (15 km south of Barcelona city; northeast of the Iberian Peninsula) were used to assess the wind energy generated by off-grid small scale wind turbines (the IT-PE-100 and the HP-600W) for the whole year and for the sea breeze period. The computations were made using QBlade, FAST and AeroDyn simulation tools and manufacturer power curves. Using manufacturer data, the HP-600W with hub-height 8 m would deliver 157 kWh during the whole year (78 kWh during the sea breeze period), with an average power of 18 W (37 W). In this work, the results of the simulations are compared with power and energy production data measured in an HP-600W turbine installed in situ from December 2014 to April 2016. Also, the measured power is compared to the power obtained by applying the measured wind in the period 2014-2016 to the manufacturer power curve and the power curve obtained with the simulations. The results of the computations agree with the experimental data, thus validating the proposed approach for wind resource estimation. The feasibility of using a vertical axis wind turbine for obtaining wind energy from the local, thermal wind regimes is also studied. This research confirms that the sea-breeze is an interesting wind energy resource for micro-generation in peri-urban coastal areas where large-scale wind farms cannot be implemented.

  19. Anatomy of the Brain

    Science.gov (United States)

    ... Menu Brain Tumor Information Brain Anatomy Brain Structure Neuron Anatomy Brain Tumor Symptoms Diagnosis Types of Tumors Risk Factors ... form Brain Tumor Information Brain Anatomy Brain Structure Neuron Anatomy Brain Tumor Symptoms Diagnosis Types of Tumors Risk Factors ...

  20. Assisting undergraduate nursing students to learn evidence-based practice through self-directed learning and workshop strategies during clinical practicum.

    Science.gov (United States)

    Zhang, Qi; Zeng, Tieying; Chen, Ying; Li, Xiaopan

    2012-07-01

    To equip undergraduate nursing students with basic knowledge and skills and foster positive attitudes toward evidence-based practice (EBP), a pilot learning program during their clinical practicum was developed in a teaching hospital in China. This article describes the specific learning process through which self-directed learning and workshop strategies were used, and a pre- and post-intervention survey were conducted to evaluate the effectiveness of the learning strategies. The findings show a significant improvement in their perceptions of EBP knowledge, attitudes and beliefs, and behavior levels. Beginning competencies in EBP were achieved. Participants reported great satisfaction and have found this program helpful in promoting their analytical and problem-solving abilities, independent learning ability, and cooperative and communication abilities as well.

  1. 基于双ER P系统的实训课程体系研究%Practicum curriculum system based on double ERP

    Institute of Scientific and Technical Information of China (English)

    王泓

    2014-01-01

    随着越来越多的企业通过引进 ERP 系统来完善企业信息化,相应地对于 ERP 的人才需求也逐步上升。目前高校的 ERP教学也逐渐从注重理论教学转到强调提高学生实际操作能力的实验教学上来。采用真实的 ERP 系统作为实验环境,模拟企业信息化流程而开展的实训课程是目前普遍采用的实践教学手段之一。通过分析比较国内外高校 ERP 系统教学情况,特别是对国内外ERP系统经行对比,提出了双ERP系统的实训课程模式,旨在能够提供给企事业单位高素质的 ERP人才。双 ERP系统的实训课程体系包括如何选择实训课程采用的 ERP系统,如何设置实训课程内容以及如何对学生的实训成果进行定量和定性的考评。重点分析了如何进行实训成果的定量考核,说明具体的考核方法并给出评价 ERP系统实训评分表的样例。%With the increasing number of groups improving their enterprise informatization,there are more requirements on ERP talent.Today,colleges and universities pay more attentions to experimental teaching than theory teaching.It is a commonly accepted practicum by using a real ERP as an experimental environment and simulating enterprise informationization process.The author suggest a practicum curriculum system based on double ERP by analyzing different ERP teaching in college both at home and abroad,especially comparing different ERP systems.The aim of the course is to provide high quality ERP talent for enterprise.Double ERP system practicum curriculum includes how to select the ERP systems which are used in the class,how to prepare and design the content of practicum and how to give the mark.Analyze how to make the qualitative evaluation and design the marking sheet sample of this course in this paper.

  2. 海风锋在渤海西岸局地暴雨过程中的作用%The Role of Sea Breeze Front in Local Storm of Bohai Coast

    Institute of Scientific and Technical Information of China (English)

    东高红; 何群英; 刘一玮; 解以扬; 戴云伟

    2011-01-01

    利用常规观测资料、地面加密自动站资料、多普勒雷达观测资料及中尺度TJ-WRF模式输出资料,对2009年7月6日天津宁河地区出现的暴雨天气过程进行了分析,重点分析了渤海湾海风锋对沿岸局地暴雨的触发机理。结果表明:此次局地暴雨过程是在有利天气背景条件下发生的,暴雨发生地存在局地层结不稳定和较好的水汽条件。海风锋本身有一辐合抬升区,区域内有弱对流存在;当海风锋移到局地存在层结不稳定且水汽充足的区域,其抬升区的辐合上升运动迅速加强,从而触发该地区雷暴的新生发展;海风锋与迎面移来的雷暴相遇,会对雷暴的加速发展起到加强作用。利用中尺度WRF模式输出资料进行分析看到,两条辐合线相交处易激发出强雷暴,雷暴出现在近地层大气暖干区的北端、湿空气的交汇处;海风锋对雷暴的新生发展有明显的触发抬升作用。%Using the data obtained by conventional observations,ground densified automatic weather stations, Doppler radar observations and mesoscale TJ-WRF model,we analyze the heavy rain occurring on 6 July 2009 at Ninghe District of Tianjin and highlight the trigger mechanism of coastal local storm caused by sea breeze front of the Bohai Gulf.The results show that the heavy rain occurred in the favorable weather conditions,and there were local instability and adequate vapor conditions.Sea breeze front itself has a convergent uplift area where weak convection exists;when sea breeze front moves to the unstable and adequate vapor areas,it will strengthen the convergence positive movement of convergent uplift area and lead to the new storm development.The meeting of the sea breeze front and thunderstorm will play a strengthened role in its development.By analyzing the data obtained by mesoscale WRF model,we can see that at the warm and dry ground in front area near the north end of the wet air interchange

  3. [Midwifery clinical practicum education].

    Science.gov (United States)

    Kao, Chien-Huei; Gau, Meei-Ling

    2013-06-01

    Midwifery is a practical facet of the health sciences that emphasizes professional competence-oriented teaching and learning. Cognitive and practical processes integrate and build midwifery student professional knowledge, attitudes, and skills. Clinical education is a teaching method and strategy used to prepare midwifery students for professional practice. Midwifery clinical teaching plans are designed using literature review, expert opinions, and student comments and determine total required hours and caseloads. Midwifery clinical teaching activities and methods promote self-reflection, childbirth education fundamentals, learning by role model observation, and learning role function through overseas observership programs. This paper discusses midwifery education dilemmas and coping methods in Taiwan.

  4. Brain Basics

    Medline Plus

    Full Text Available ... have been linked to many mental disorders, including autism , obsessive compulsive disorder (OCD) , schizophrenia , and depression . Brain ... studies show that brain growth in children with autism appears to peak early. And as they grow ...

  5. Brain Basics

    Medline Plus

    Full Text Available ... depression. The Growing Brain Inside the Brain: Neurons & Neural Circuits Neurons are the basic working unit of ... but sometimes give rise to disabilities or diseases. neural circuit —A network of neurons and their interconnections. ...

  6. Brain Basics

    Medline Plus

    Full Text Available ... than ever before. Brain Imaging Using brain imaging technologies such as magnetic resonance imaging (MRI), which uses ... depression experience when starting treatment. Gene Studies Advanced technologies are also making it faster, easier, and more ...

  7. Brain Basics

    Medline Plus

    Full Text Available ... Real Life Brain Basics in Real Life—How Depression affects the Brain Meet Sarah Sarah is a ... blues" from time to time. In contrast, major depression is a serious disorder that lasts for weeks. ...

  8. Brain Basics

    Medline Plus

    Full Text Available ... the brain cannot effectively coordinate the billions of cells in the body, the results can affect many ... unit of the brain and nervous system. These cells are highly specialized for the function of conducting ...

  9. Brain Diseases

    Science.gov (United States)

    The brain is the control center of the body. It controls thoughts, memory, speech, and movement. It regulates the function of many organs. When the brain is healthy, it works quickly and automatically. However, ...

  10. Brain Basics

    Medline Plus

    Full Text Available ... related to changes in the anatomy, physiology, and chemistry of the nervous system. When the brain cannot ... their final destination. Chemical signals from other cells guide neurons in forming various brain structures. Neighboring neurons ...

  11. Brain Basics

    Medline Plus

    Full Text Available ... in the anatomy, physiology, and chemistry of the nervous system. When the brain cannot effectively coordinate the billions ... the basic working unit of the brain and nervous system. These cells are highly specialized for the function ...

  12. Brain Basics

    Medline Plus

    Full Text Available ... affect many aspects of life. Scientists are continually learning more about how the brain grows and works ... early brain development. It may also assist in learning and memory. Problems in making or using glutamate ...

  13. PROSPECTS FOR COKE BREEZE RECOVERY

    Directory of Open Access Journals (Sweden)

    D. N. Mihnovets

    2012-01-01

    Full Text Available Researches give grounds to believe in the possibility of receiving briquettes from coke waste mixed with peat dry coal and their use for smelting iron in the cupola or as a household fuel.

  14. Brain Basics

    Medline Plus

    Full Text Available ... such as depression. The Growing Brain Inside the Brain: Neurons & Neural Circuits Neurons are the basic working unit ... final destination. Chemical signals from other cells guide neurons in forming various brain structures. Neighboring neurons make connections with each other ...

  15. Brain Aneurysm

    Science.gov (United States)

    A brain aneurysm is an abnormal bulge or "ballooning" in the wall of an artery in the brain. They are sometimes called berry aneurysms because they ... often the size of a small berry. Most brain aneurysms produce no symptoms until they become large, ...

  16. The Brain.

    Science.gov (United States)

    Hubel, David H.

    1979-01-01

    This article on the brain is part of an entire issue about neurobiology and the question of how the human brain works. The brain as an intricate tissue composed of cells is discussed based on the current knowledge and understanding of its composition and structure. (SA)

  17. 架空输电线路微风振动防治措施介绍及瞻望%Measures of Introduction and Look Forward to Prevent Breeze Vibration of Overhead Power Transmission Lines

    Institute of Scientific and Technical Information of China (English)

    李阔; 成印健; 成志

    2013-01-01

    随着输电线路大量兴建,输电线路微风振动问题也越来越引起线路工作人员的重视。为了防止线路因微风振动引起的破坏,在线路设计时要加强措施来防止振动破坏。采用自阻尼导线和防振线夹来防振是一种通过改变线路自身组成部分特性来防振的措施,采用护线条、阻尼线、防振锤、阻尼弹簧间隔棒这些消振装置来防振是另外一种有效的防振措施,两种方法可根据具体情况来选择采用。同时,在超高压乃至特高压迅速发展的今天,利用阻尼线与防振锤混合消振装置以及阻尼弹簧间隔棒来防止微风振动已经越来越受到电力工作者的青睐,成为了一种趋势。%Along with the power transmission lines of construction ,the problem to prevent breeze vibration has caused line workers' atten-tion more and more. To prevent lines for vibration caused by the breeze destruction,in the line design people must strengthen the measures to pre-vent the vibration damage. Adopting the damping wires and vibration- proof line clip to prevent vibration is an effective way by which changing the line itself component characteristics. Adopting Armor Rod, Damping Line, Vibration- proof Hammer,damping spring spacer these vibrating de-vices to prevent vibration is another kind of effective vibration control measures . The two methods can be adopted according to the specific condi-tions. At the same time when the extra high voltage system and even ultra high voltage system is on the development, Using damping line and vi-bration- proof hammer mixed vibrating device class and damping spring spacer to prevent breeze vibration has got the favour of power workers more and more.

  18. Inquiry Into Reflective Practices of Student Teachers Majoring in English Education During Practicum%学生教师反思实践模式探索

    Institute of Scientific and Technical Information of China (English)

    詹颖

    2015-01-01

    尽管国内学者对教师反思实践的理论进行了热烈的探讨,但他们的研究集中于在职教师实践性知识的发展上,甚少涉及学生教师的反思实践。在该研究中,我们设计了反思干预方案,让一群英语教育专业学生教师在实习期间进行小组反思,收集自己的教学点滴,与学校和大学指导老师开三方会议,利用翔实的自我评价表和总结性评价表进行自评和他评。通过分析学生教师实习后的总结日志,我们发现学生教师在实习期间能对教学的各个方面进行不同程度的反思,该反思实践对他们的专业成长起到了促进作用。%Although Chinese educators heatedly have discussed the theories of reflective practices,their research has centered on the development of practical knowledge of in-service teachers and seldom explored the reflective practices of pre-service teachers. In the current study,we designed intervention on reflective practices of student teachers majoring in English education during their practicum. They were required to reflect collectively,collect their teaching data,had meeting with school mentors and university tutors,and self and peer assess their teaching using as pre - designed assessing scheme. Through analysis of 41 student teachers ’ journals written after practicum,the findings shows that the intervention seemed to urge student teachers to reflective different aspects of teaching in a varied degree. In addition, the reflective practices appeared to facilitate student teachers ’ professional development in terms of reflective ability,understanding of teaching,teaching skills and classroom management as well as self-knowledge and understanding of teaching profession.

  19. Integrated Design of Basic Training, Practicum and End-of-Course Assignment Modules in the Teacher Training Degree: Perception of University Teachers, Students, and School Teachers

    Science.gov (United States)

    Torremorell, Maria Carme Boqué; de Nicolás, Montserrat Alguacil; Valls, Mercè Pañellas

    Teacher training at the Blanquerna Faculty of Psychology and Educational and Sports Sciences (FPCEE), in Barcelona, has a long pedagogical tradition based on teaching innovation. Its educational style is characterised by methods focused on the students' involvement and on close collaboration with teaching practice centres. Within a core subject in the Teacher Training diploma course, students were asked to assess different methodological proposals aimed at promoting the development of their personal, social, and professional competences. In the assessment surveys, from a sample of 145 students, scores for variables very satisfactory or satisfactory ranged from 95.8 % to 83.4 % for the entire set of methodological actions under analysis. Data obtained in this first research phase were very useful to design basic training modules for the new Teacher Training Degree. In the second phase (in process), active teachers are asked for their perception on the orientation of the practicum, its connection with the end-of-course assignment, and the in-service student's incidence on innovation processes at school.

  20. Practicum sin fronteras: estudio de un caso de acción y reflexión intercultural y pedagógica

    Directory of Open Access Journals (Sweden)

    Ana IGLESIAS RODRÍGUEZ

    2013-07-01

    Full Text Available La formación docente del presente siglo XXI reclama una nueva contextualización de las prácticas educativas a la luz de amplios marcos globales bajo la cual hay que interpretar las especificidades culturales de los itinerarios formativos. Este estudio de caso describe algunas de las oportunidades y desafíos del Practicum Internacional de la Universidad de Salamanca para los aprendices de maestro en colaboración con instituciones educativas del Reino Unido. Más allá de la confrontación viva con la cultura como diversidad, los numerosos agentes implicados en el mismo establecieron un diálogo entre perspectivas pedagógicas diferentes que potenciaron procesos de acción docente colaborativa, interpelación mutua y reflexión conjunta de enorme valor en los ámbitos lingüístico, pedagógico y cultural. Mantenemos que ese diálogo fértil atraviesa fronteras y ya define, en sí mismo, una experiencia educativa de vinculación efectiva por cuanto sitúa la dimensión intercultural en el centro mismo de la trayectoria formativa del profesorado europeo.

  1. “多方当事人调解诊所课程”的调研报告%A Report on Multiparty Mediation Practicum

    Institute of Scientific and Technical Information of China (English)

    翁洁

    2012-01-01

    This report was targeted at the course of Multiparty Mediation Practicum. It discussed the authorg observation and investigation of the teaching contents and methods, class characteristics as well as the assess ment methods of this course. Then detailed analyses were made on the course orientation, class structure and teacher student function of it in the hope that they could contribute to the improvements in the research and practice of the teaching attitude toward, objective of, and means of the legal education in China.%文章将“多方当事人调解诊所课程”作为调查研究的对象,通过对该课程的授课内容与方式、课堂特点、考核方式等方面的观察与记录,从课程定位、课堂构成、师生功能三个方面对该课程进行了分析并得出了相关结论,以期能为我国法学教育教学态度、目标、方式、手段等方面的研究与切实改善提供有益的参考。

  2. Brain Autopsy

    Science.gov (United States)

    ... why a family should consider arranging for a brain autopsy upon the death of their loved one. To get a definitive ... study of tissue removed from the body after death. Examination of the whole brain is important in understanding FTD because the patterns ...

  3. Brain Basics

    Medline Plus

    Full Text Available ... Brain Imaging Using brain imaging technologies such as magnetic resonance imaging (MRI), which uses magnetic fields to take pictures of ... to slow or stop them from progressing. Functional magnetic resonance imaging (fMRI) is another important research tool in understanding ...

  4. Brain Basics

    Medline Plus

    Full Text Available ... and are working to compare that with brain development in people mental disorders. Genes and environmental cues both help to direct ... comparing such children to those with normal brain development may help scientists to pinpoint when and where mental disorders begin and perhaps how to slow or stop ...

  5. Brain peroxisomes.

    Science.gov (United States)

    Trompier, D; Vejux, A; Zarrouk, A; Gondcaille, C; Geillon, F; Nury, T; Savary, S; Lizard, G

    2014-03-01

    Peroxisomes are essential organelles in higher eukaryotes as they play a major role in numerous metabolic pathways and redox homeostasis. Some peroxisomal abnormalities, which are often not compatible with life or normal development, were identified in severe demyelinating and neurodegenerative brain diseases. The metabolic roles of peroxisomes, especially in the brain, are described and human brain peroxisomal disorders resulting from a peroxisome biogenesis or a single peroxisomal enzyme defect are listed. The brain abnormalities encountered in these disorders (demyelination, oxidative stress, inflammation, cell death, neuronal migration, differentiation) are described and their pathogenesis are discussed. Finally, the contribution of peroxisomal dysfunctions to the alterations of brain functions during aging and to the development of Alzheimer's disease is considered.

  6. Brain radiation - discharge

    Science.gov (United States)

    Radiation - brain - discharge; Cancer-brain radiation; Lymphoma - brain radiation; Leukemia - brain radiation ... Decadron) while you are getting radiation to the brain. It may make you hungrier, cause leg swelling ...

  7. Brain tumor - primary - adults

    Science.gov (United States)

    ... Vestibular schwannoma (acoustic neuroma) - adults; Meningioma - adults; Cancer - brain tumor (adults) ... Primary brain tumors include any tumor that starts in the brain. Primary brain tumors can start from brain cells, ...

  8. Brain Basics

    Medline Plus

    Full Text Available ... highly developed area at the front of the brain that, in humans, plays a role in executive functions such as ... Higher Death Rate Among Youth with Psychosis Delayed Walking Link ...

  9. Brain Basics

    Medline Plus

    Full Text Available ... the brain, which is linked to thought and emotion. It is also linked to reward systems in ... or-flight response and is also involved in emotions and memory. anterior cingulate cortex —Is involved in ...

  10. Brain Basics

    Medline Plus

    Full Text Available ... Some people who develop a mental illness may recover completely; others may have repeated episodes of illness ... in early detection, more tailored treatments, and possibly prevention of such illnesses. The Working Brain Neurotransmitters Everything ...

  11. Brain Basics

    Medline Plus

    Full Text Available ... that contains codes to make proteins and other important body chemicals. DNA also includes information to control ... cells required for normal function and plays an important role during early brain development. It may also ...

  12. Brain Basics

    Medline Plus

    Full Text Available ... of the cell from its surrounding environment and controls what enters and leaves the cell, and responds ... via axons) to form brain circuits. These circuits control specific body functions such as sleep and speech. ...

  13. Brain Basics

    Medline Plus

    Full Text Available ... in early detection, more tailored treatments, and possibly prevention of such illnesses. The Working Brain Neurotransmitters Everything ... can cause tremors or symptoms found in Parkinson's disease. Serotonin —helps control many functions, such as mood, ...

  14. Brain Basics

    Medline Plus

    Full Text Available ... Offices and Divisions Careers@NIMH Advisory Boards and Groups Staff Directories Getting to NIMH National Institutes of ... electrical signals. The brain begins as a small group of cells in the outer layer of a ...

  15. Brain Basics

    Medline Plus

    Full Text Available ... These circuits control specific body functions such as sleep and speech. The brain continues maturing well into ... factors that can affect our bodies, such as sleep, diet, or stress. These factors may act alone ...

  16. 本科生光通信实习课程的建设与实践%Construction and Practice of Optical Communication Practicum for Undergraduates

    Institute of Scientific and Technical Information of China (English)

    阎春生; 李明宇; 林远芳; 时尧成; 胡海洋; 伊蔚

    2012-01-01

    The specialized practice is important for college students in improving the practical experience, grasping the development of the industry, and enhancing the engineering literacy. In view of the characteristics of optical communication equipment, the optical communication internship was successfully set up in cooperation with industry leading companies in the sharing of teaching and research instruments, where college students can use the advanced equipment of the industry by doing optical communication testing experiments, and learn about industry information and career development by visitinOg enterprises and attending industry engineering lectures. Years of practice proves that the construction of the optical communication practicum achieved good results, providing experience and reference for professional practice of optical communication in China.%专业实习是大学生提高实践经验、了解行业动态以及增强工程素养的重要环节.针对光通信专业仪器设备昂贵、产品生产环境苛刻以及产品测试复杂的特点,通过与行业知名企业合作,教学与科研仪器分时复用等途径,成功地开设了光通信实习课程,使学生通过光通信测试实验能够接触和使用本行业高瑞的仪器设备,通过参观企业和听业内工程师讲座了解行业信息和职业发展方向,获得了良好的效果,为我国光通信专业实习提供了很好的经验.

  17. Language Practicum : The "Interface" between Classroom Learning and Real-world Communication%语言实践:课堂学习与独立交际之间的接口

    Institute of Scientific and Technical Information of China (English)

    李同路

    2012-01-01

    To provide smooth transitions from classroom learning to real-world communication, language practicum should be integrated into formal curriculum. Under the guidance of the instruc- tor, students interact with local people in real situations to accomplish certain communicative tasks in the target language. Through such experiential learning, it aims to enhance language proficiency, communicative skills, and intercultural competence. As a formal instructional activity, the language practicum should be goal-oriented, well-structured, and validly assessed.%为了充分利用目的语环境,语言实践应纳入正规课程安排之中,以建立课堂教学与独立交际之间的“接口”。其核心是在课堂教学基础上,系统训练学生在自然语言环境中与当地人进行交流的能力,并辅以文化适应内容,以促进学生的语言能力、交际能力与文化能力的综合培养。作为围绕交际任务展开的体验式教学活动,语言实践应有明确的目的,清晰的计划,严谨的结构,有效的评估。

  18. Experiences and Implications of American Professional Development School and leaching Practicum Reforms%美国教师专业发展学校与教育实习改革的经验与启示

    Institute of Scientific and Technical Information of China (English)

    胡惠闵; 汪明帅

    2011-01-01

    作为教师教育课程重要组成部分,教育实习一直受到教育界的普遍关注。本文分析了美国教育实习变革的背景,引出了教师专业发展学校作为未来教师培养基地的现实基础;并以斯坦福大学的教育学院教师教育项目为例,解读了作为合作伙伴的教师专业发展学校在未来教师实习过程中所扮演的重要角色;从合作、实践和反思三个方面分析了美国的经验及对我国的启示。%Integral to a teacher education program, teaching practicum is always the focus in education. This paper analyzes the background of American teaching practicum reforms which legitimizes the realistic bases of professional development school (PDS) as the s

  19. Brain death.

    Science.gov (United States)

    Wijdicks, Eelco F M

    2013-01-01

    The diagnosis of brain death should be based on a simple premise. If every possible confounder has been excluded and all possible treatments have been tried or considered, irreversible loss of brain function is clinically recognized as the absence of brainstem reflexes, verified apnea, loss of vascular tone, invariant heart rate, and, eventually, cardiac standstill. This condition cannot be reversed - not even partly - by medical or surgical intervention, and thus is final. Many countries in the world have introduced laws that acknowledge that a patient can be declared brain-dead by neurologic standards. The U.S. law differs substantially from all other brain death legislation in the world because the U.S. law does not spell out details of the neurologic examination. Evidence-based practice guidelines serve as a standard. In this chapter, I discuss the history of development of the criteria, the current clinical examination, and some of the ethical and legal issues that have emerged. Generally, the concept of brain death has been accepted by all major religions. But patients' families may have different ideas and are mostly influenced by cultural attitudes, traditional customs, and personal beliefs. Suggestions are offered to support these families.

  20. Exploring Reflective Teaching through Informed Journal Keeping and Blog Group Discussion in the Teaching Practicum (Exploración de la enseñanza reflexiva en la práctica docente a través de la escritura informada de diarios y de discusiones grupales mediante "blogs")

    Science.gov (United States)

    Insuasty, Edgar Alirio; Zambrano Castillo, Lilian Cecilia

    2010-01-01

    This article reports the findings of a study which examined how student teachers could be empowered as more reflective practitioners through journal keeping and blog group discussions. It was carried out with six student teachers who developed their practicum over six months. Data were collected through journals, blogs, metaphors, conferences and…

  1. Facilitating Professional Development during International Practicum: Understanding Our Work as Teacher Educators through Critical Incidents (Facilitando el desarrollo profesional durante la práctica internacional: Comprendiendo nuestro trabajo como formadores de profesores a través de incidentes críticos)

    Science.gov (United States)

    Williams, Judy; Grierson, Arlene

    2016-01-01

    This collaborative self-study details the experiences of an Australian teacher educator and a Canadian teacher educator, who led teacher candidates on international practicum placements to the Cook Islands and Kenya respectively. Focusing on critical incidents, they collaboratively analyzed dilemmas that occurred when providing professional…

  2. Watching Teacher Candidates Watch Themselves: Reflections on a Practicum Program in Turkey (Observación de candidatos a profesores que se observan a sí mismos: reflexiones sobre un programa de práctica docente en Turquía)

    Science.gov (United States)

    Akcan, Sumru

    2010-01-01

    This article presents the findings of a study that investigates pre-service English teachers' reflections on their teaching performance after watching their videotaped lessons in company with their university supervisor. This study, conducted during the spring semester practicum program in the 2007-2008 academic year, examines how the teacher…

  3. Brain computer

    Directory of Open Access Journals (Sweden)

    Sarah N. Abdulkader

    2015-07-01

    Full Text Available Brain computer interface technology represents a highly growing field of research with application systems. Its contributions in medical fields range from prevention to neuronal rehabilitation for serious injuries. Mind reading and remote communication have their unique fingerprint in numerous fields such as educational, self-regulation, production, marketing, security as well as games and entertainment. It creates a mutual understanding between users and the surrounding systems. This paper shows the application areas that could benefit from brain waves in facilitating or achieving their goals. We also discuss major usability and technical challenges that face brain signals utilization in various components of BCI system. Different solutions that aim to limit and decrease their effects have also been reviewed.

  4. Silicon Brains

    Science.gov (United States)

    Hoefflinger, Bernd

    Beyond the digital neural networks of Chap. 16, the more radical mapping of brain-like structures and processes into VLSI substrates has been pioneered by Carver Mead more than 30 years ago [1]. The basic idea was to exploit the massive parallelism of such circuits and to create low-power and fault-tolerant information-processing systems. Neuromorphic engineering has recently seen a revival with the availability of deep-submicron CMOS technology, which allows for the construction of very-large-scale mixed-signal systems combining local analog processing in neuronal cells with binary signalling via action potentials. Modern implementations are able to reach the complexity-scale of large functional units of the human brain, and they feature the ability to learn by plasticity mechanisms found in neuroscience. Combined with high-performance programmable logic and elaborate software tools, such systems are currently evolving into user-configurable non-von-Neumann computing systems, which can be used to implement and test novel computational paradigms. The chapter introduces basic properties of biological brains with up to 200 Billion neurons and their 1014 synapses, where action on a synapse takes ˜10 ms and involves an energy of ˜10 fJ. We outline 10x programs on neuromorphic electronic systems in Europe and the USA, which are intended to integrate 108 neurons and 1012 synapses, the level of a cat's brain, in a volume of 1 L and with a power dissipation design an intelligent technical response.

  5. Robot brains

    NARCIS (Netherlands)

    Babuska, R.

    2011-01-01

    The brain hosts complex networks of neurons that are responsible for behavior in humans and animals that we generally call intelligent. I is not easy to give an exact definition of intelligence – for the purpose of this talk it will suffice to say that we refer to intelligence as a collection of cap

  6. Instructional ladders in computer networks practicums%计算机网络实践课程的阶梯式教学法

    Institute of Scientific and Technical Information of China (English)

    刘春波; 钟安鸣; 顾兆军

    2012-01-01

    尽管大力加强了计算机网络实践教学的人力和物力投入,但教学效果却难以尽如人意.经分析,学生基础不一、接受能力不同是重要原因.阶梯式教学法则可以有效地解决这个问题.它将一个复杂的、高级的教学目标分解为从低级到高级、难度逐渐增大的多个目标,使得终极目标对于每一个学生都是可以实现的.在计算机网络实践课程中,依据教学目标,将网络协议分析和网络应用编程两个模块的教学分别划分为三级阶梯.教学实践表明,在教学目标有所提高的情况下,能够较好实现目标的学生比例从1/2提高到2/3.%Despite a great deal of human and material resources have been devoted to computer network practical teaching, teaching effect is difficult to satisfactory. It is found that students have different basis and different accept capacities is an important cause. Laddered teaching method can effectively solve this problem. It breaks down a complex advanced teaching objective into multiple targets whose difficulty increases gradually from lower to higher so that the ultimate goal can be achieved for each student. In computer networks practicums, teaching processes of network protocol analyzing module and network application programming module are both designed as three-stair ladders according to the teaching objectives. Teaching practices show that in the case of enhanced teaching objective, the proportion of students who can well achieve the objective increases from 1/2 to 2/3.

  7. Brain tumor - children

    Science.gov (United States)

    ... children; Neuroglioma - children; Oligodendroglioma - children; Meningioma - children; Cancer - brain tumor (children) ... The cause of primary brain tumors is unknown. Primary brain tumors may ... (spread to nearby areas) Cancerous (malignant) Brain tumors ...

  8. Understanding Brain Tumors

    Science.gov (United States)

    ... to Know About Brain Tumors . What is a Brain Tumor? A brain tumor is an abnormal growth
 ... Tumors” from Frankly Speaking Frankly Speaking About Cancer: Brain Tumors Download the full book Questions to ask ...

  9. Brain Tumors (For Parents)

    Science.gov (United States)

    ... Old Feeding Your 1- to 2-Year-Old Brain Tumors KidsHealth > For Parents > Brain Tumors Print A ... radiation therapy or chemotherapy, or both. Types of Brain Tumors There are many different types of brain ...

  10. Brain and Nervous System

    Science.gov (United States)

    ... Your 1- to 2-Year-Old Brain and Nervous System KidsHealth > For Parents > Brain and Nervous System Print ... brain is quite the juggler. Anatomy of the Nervous System If you think of the brain as a ...

  11. The Creative Brain.

    Science.gov (United States)

    Herrmann, Ned

    1982-01-01

    Outlines the differences between left-brain and right-brain functioning and between left-brain and right-brain dominant individuals, and concludes that creativity uses both halves of the brain. Discusses how both students and curriculum can become more "whole-brained." (Author/JM)

  12. Brain and Addiction

    Science.gov (United States)

    ... Search Term(s): Teens / Drug Facts / Brain and Addiction Brain and Addiction Print Your Brain Your brain is who you are. It’s what ... solve problems, and make decisions. How Does Your Brain Communicate? The brain is a complex communications network ...

  13. Quantum Brain?

    CERN Document Server

    Mershin, A; Skoulakis, E M C

    2000-01-01

    In order to create a novel model of memory and brain function, we focus our approach on the sub-molecular (electron), molecular (tubulin) and macromolecular (microtubule) components of the neural cytoskeleton. Due to their size and geometry, these systems may be approached using the principles of quantum physics. We identify quantum-physics derived mechanisms conceivably underlying the integrated yet differentiated aspects of memory encoding/recall as well as the molecular basis of the engram. We treat the tubulin molecule as the fundamental computation unit (qubit) in a quantum-computational network that consists of microtubules (MTs), networks of MTs and ultimately entire neurons and neural networks. We derive experimentally testable predictions of our quantum brain hypothesis and perform experiments on these.

  14. Animating Brains

    Science.gov (United States)

    Borck, Cornelius

    2016-01-01

    A recent paper famously accused the rising field of social neuroscience of using faulty statistics under the catchy title ‘Voodoo Correlations in Social Neuroscience’. This Special Issue invites us to take this claim as the starting point for a cross-cultural analysis: in which meaningful ways can recent research in the burgeoning field of functional imaging be described as, contrasted with, or simply compared to animistic practices? And what light does such a reading shed on the dynamics and effectiveness of a century of brain research into higher mental functions? Reviewing the heated debate from 2009 around recent trends in neuroimaging as a possible candidate for current instances of ‘soul catching’, the paper will then compare these forms of primarily image-based brain research with older regimes, revolving around the deciphering of the brain’s electrical activity. How has the move from a decoding paradigm to a representational regime affected the conceptualisation of self, psyche, mind and soul (if there still is such an entity)? And in what ways does modern technoscience provide new tools for animating brains? PMID:27292322

  15. 行动研究对实习支教学生教学反思能力发展的影响%The Effect of Action Research on Pre-service English Teachers' Teaching Reflection during Their Practicum

    Institute of Scientific and Technical Information of China (English)

    张双华; 周艳斌

    2013-01-01

    Teaching reflection is an important means for teachers'professional development .It is also one of the essential abilities an intern should try to develop during his practicum .This study combines questionnaire survey with interview to investigate how the intern's action research affects his/her teaching reflection during his/her teaching practicum .Results indicate that carrying out ac-tion research has significantly improved interns'teaching reflection ,and the teaching journals ,col-laborative talks with peer interns and their action research reports all are some important forms of teaching reflection widely employed by interns .Based on the results of this study ,some suggestions for facilitating interns'teaching reflection are made at the end .%教学反思是促进教师专业成长的重要途径,也是实习学生在教育实习期间需要发展的重要能力。本研究通过问卷结合访谈的方式调查了实习学生在实习支教期间开展的教育行动研究对其教学反思能力的影响。研究发现,教育行动研究的开展有效地促进了实习学生的教学反思能力发展;为开展行动研究而撰写的教学日志、与同事的讨论、行动研究报告等都是开展教学反思的重要手段,得到广泛应用。在此基础上,研究为如何发展实习支教学生支教期间的教学反思能力提出了建议。

  16. 基于“课堂学习研究”的高师实践教学模式探索%Exploration on Learning Study-Based Practicum Model

    Institute of Scientific and Technical Information of China (English)

    詹颖

    2016-01-01

    作为教师专业成长的起点,教育实习是学会教学和自我发展的过程。而无论是人本主义教育模式,还是传统工艺型模式,抑或是行为主义模式在提升学生教师的“实践性知识”上都有所欠缺。本文提出基于“课堂学习研究”的高师实践教学模式,其特色是以变易学习理论为指导进行学生教师的集体行动研究。学生教师深入一课不断挖掘自己对教学的理解和认识,同时把自己所学和学生所需进行有益结合,从而在实践共同体中成长为一名教师熟手,并且持有自己的教学信念。%As a starting point of teacher professional growth, practicum is a process of learning to teach and achieve self-development. However, humanistic education model, traditional process model or behavioral model seems powerless in increasing student teachers’ practical knowledge.This paper proposes a learning study-based practicum model which characterizes student teachers’act research in communities under the guidance of variation theory.Student teachers focus on one lesson and enhance their understanding of teaching and students’learning needs and difficulties. They gradually become experienced teachers and generate their own teaching bel iefs.

  17. Brain glycogen

    DEFF Research Database (Denmark)

    Obel, Linea Lykke Frimodt; Müller, Margit S; Walls, Anne B

    2012-01-01

    activity and memory formation. In line with the great spatiotemporal complexity of the brain and thereof derived focus on the basis for ensuring the availability of the right amount of energy at the right time and place, we here encourage a closer look into the molecular and subcellular mechanisms...... underlying glycogen metabolism. Based on (1) the compartmentation of the interconnected second messenger pathways controlling glycogen metabolism (calcium and cAMP), (2) alterations in the subcellular location of glycogen-associated enzymes and proteins induced by the metabolic status and (3) a sequential...

  18. Samen een practicum immunologie ontwerpen

    NARCIS (Netherlands)

    Versluis, K.; Savelkoul, H.F.J.

    2014-01-01

    Een ontwikkelteam van docenten werkt samen met immunologen van Wageningen Universiteit aan een lessenserie. Hoogleraar Savelkoul: "Ik kan in een dag een Elisa-expert van je maken". Het project wordt begeleid door Arjen Nawijn, leraar STOAS.

  19. Brain Tumor Surgery

    Science.gov (United States)

    ... Meningitis Brain swelling Stroke Excess fluid in the brain Coma Death Recovery Time Recovery time depends on: The procedure performed. The part of the brain where the tumor is/was located. The areas ...

  20. Brain injury - discharge

    Science.gov (United States)

    ... and caregivers. Biausa.org. www.biausa.org/brain-injury-family-caregivers.htm#Manage the Home . Accessed December 8, 2016. ... Caregiver Alliance; National Center on Caregiving. Traumatic brain injury. ... www.caregiver.org/traumatic-brain-injury . Accessed ...

  1. Traumatic Brain Injury

    Science.gov (United States)

    Traumatic brain injury (TBI) happens when a bump, blow, jolt, or other head injury causes damage to the brain. Every year, millions of people in the U.S. suffer brain injuries. More than half are bad enough that ...

  2. 针对微风发电的城市风场特性初步研究%A Preliminary Research of Urban Wind Farm Characteristics for the Breeze Power Generation

    Institute of Scientific and Technical Information of China (English)

    李登君; 韦雅文; 季丰

    2013-01-01

    近年来,风电行业在全球都获得了快速发展。但传统风电机组在城市环境中却难以正常工作。为了实现在城市中进行微风发电,就需要探究其原因,对城市风场特性进行分析和研究。本研究以南京作为代表城市,使用便携式风速仪和固定式气象站对城市环境中的风场特性进行了观测和分析。根据结果,总结出影响风力发电效果的城市风场特性主要有三大方面:低风速、频变风向和湍流。最后对照传统风力发电选址的技术标准提出城市风力发电的发展方向。%In recent years, the wind power industry in the world has achieved rapid growth. But traditional wind turbine is difcult to work properly in an urban environment. A preliminary study of urban wind farm characteristics was made in order to fnd out the reason and make the generation breeze in urban area to become reality. In this study, portable anemometer and fxed weather station were used to observe and analysis for the characteristics of urban wind farm in Nanjing city, which was made as representative. According to the measurement results, the three mainly infuencing factors of urban wind farm characteristics that impact the efect of wind power generation are:low wind velocity, frequent changing wind direction and turbulence. At last, the direction of development for urban wind power generation was put forward according to the technical standards of address selection for traditional wind power generation.

  3. Observation on the characteristics of sea-land breezes and its influence to air quality over Pearl River Delta region during dry season%珠三角干季海陆风特征及其对空气质量影响的观测

    Institute of Scientific and Technical Information of China (English)

    吴蒙; 罗云; 吴兑; 范绍佳

    2016-01-01

    Based on the sounding data obtained from the boundary layer observation experiment over Pearl River Delta (PRD) region during October 2004 and the corresponding hourly PM2.5 data, the characteristics of sea-land breezes and its influenceson quality over PRD region were discussed by Recirculation Factor (RF) and other methods. Recirculation factor was a useful tool to represent the atmospheric horizontal transmission capacity.With the influence of the cold air and warm air confront with each other during pollution days, the sea-land breezes occurred frequently as a result of the weak system wind, and air quality index had significant relation with the RF, the RF of 100~400m was about 0.5~0.8. The horizontal transmission capacity of vertical wind field was weak under the influence of sea-land breezes, not conducive to the spread of pollutants. As PRD controlled by cold air overall, the RF of vertical windreach up to 0.9, and sea-land breezes circulation was hard to developing,so the horizontal transmissions capacity was powerful and the pollutants could be spread effectually. Among the observations, the frequency of sea-land breezes was about 47.8%at the coastal station, and the 72.7%of sea-land breezes day was pollution day, the wind directionhad visible change in clockwise over time. The sea breeze occurred in 16:00, and reached the maximum in 20:00 with the influence height was about 600~800m. In the night, sea breeze may transport the pollutants back to inland, and gave rise to a peak value of PM2.5 concentration appeared at 19:00 to 21:00 in inland station.%通过2004年10月在珠江三角洲(以下简称“珠三角”)开展大气边界层观测试验得到的垂直风温资料和逐时PM2.5浓度资料,利用局地环流指数(RF)等方法研究了珠三角海陆风特征及其对空气质量的影响.结果表明:局地环流指数是表征局地大气输送能力的有效指标;冷暖气团对峙导致珠三角污染日背景风场较弱,沿海海

  4. 教育实习如何真正走进中小学——以美国和新加坡为分析对象%How to Really Implement the Practicum into Schools: To Take United States and Singapore for Example

    Institute of Scientific and Technical Information of China (English)

    汪明帅; 陈传东

    2011-01-01

    In order to bridge "theory and practice" for student teachers, universities must build robust partnership with schools. However, the outstanding problems of practicum in current china include the inefficient cooperation between Teachers Colleges and schools, lack of the steady practice base and that the schools don't support the new teachers' teaching. To change this situation, this article analyzes the practicum in the United States and Singapore. Educational practice in both countries shows that: we should deeply understand the important role of primary and secondary schools in initial teacher education, guarantee the continuity of the practicum stages and stress the guidance of school cooperating teachers.%我国现行的教育实习存在高师院校与实习学校的合作形式松散、缺乏稳固的实习基地、现有的实习学校并不切实支持新教师实习等问题。本文基于对美国和新加坡教育实习实践经验的分析,提出我们应该在深刻认识中小学教师教育重要性的基础上,注重实习的阶段性和连续性,并重视中小学指导教师在教育实习中的突出作用。

  5. Imaging brain development: the adolescent brain.

    Science.gov (United States)

    Blakemore, Sarah-Jayne

    2012-06-01

    The past 15 years have seen a rapid expansion in the number of studies using neuroimaging techniques to investigate maturational changes in the human brain. In this paper, I review MRI studies on structural changes in the developing brain, and fMRI studies on functional changes in the social brain during adolescence. Both MRI and fMRI studies point to adolescence as a period of continued neural development. In the final section, I discuss a number of areas of research that are just beginning and may be the subject of developmental neuroimaging in the next twenty years. Future studies might focus on complex questions including the development of functional connectivity; how gender and puberty influence adolescent brain development; the effects of genes, environment and culture on the adolescent brain; development of the atypical adolescent brain; and implications for policy of the study of the adolescent brain.

  6. Brain AVM (Arteriovenous Malformation)

    Science.gov (United States)

    ... a brain scan for another health issue or after the blood vessels rupture and cause bleeding in the brain (hemorrhage). Once diagnosed, a brain AVM can often be treated successfully to prevent complications, such as brain damage or stroke. Find out why Mayo Clinic is the best ...

  7. Brain and Nervous System

    Science.gov (United States)

    ... the left side; when you're listening to music, you're using the right side. It's believed that some people are more "right-brained" or "left-brained" while others are more "whole-brained," meaning they use both halves of their brain to the same degree. The outer layer of ...

  8. Inhibition and Brain Work

    OpenAIRE

    Buzsáki, György; Kaila, Kai; Raichle, Marcus

    2007-01-01

    The major part of the brain’s energy budget (~60%–80%) is devoted to its communication activities. While inhibition is critical to brain function, relatively little attention has been paid to its metabolic costs. Understanding how inhibitory interneurons contribute to brain energy consumption (brain work) is not only of interest in understanding a fundamental aspect of brain function but also in understanding functional brain imaging techniques which rely on measurements related to blood flow...

  9. Fanning the Optimal Breeze with an Abanico

    Science.gov (United States)

    Goon, Grace; Marthelot, Joel; Reis, Pedro; MIT EGS Lab Team

    Flexible hand-held fans, or abanicos, are universally employed as cooling devices that are both portable and sustainable. Their to and fro axial motion about one's hand generates an airflow that increases the evaporation rate near the skin and refreshes. We study this problem in the context of fluid-structure interaction, through precision model experiments. We first characterize the elastic properties of a semi-circular thin plates with various thickness and evaluate their aerodynamic performance in a custom built apparatus. The air velocity profile that results from the flapping motion of the fan is characterized for different driving conditions. A systematic variation of the geometric and elastic parameters, along with an exploration of the parameter space of the periodic driving motion (amplitude and frequency), allows us to establish optimal design and operational conditions for maximal output of the generated airflow, while minimizing the input power.

  10. Sea breeze generated waves and coastal morphology

    NARCIS (Netherlands)

    Verhagen, H.J.; Savov, B.

    1999-01-01

    For the determination of the stability of coastlines, coastal erosion and the design of erosion protection studies, the “local” wave climate is the most important input parameter. For morphology, “local” means just outside the breaker line. On relatively calm days the local wave climate is strongly

  11. Vivências e percepções dos estágios pedagógicos: estudo com alunos de licenciaturas em ensino Experiences and perceptions during practicum: a study with preservice teachers

    Directory of Open Access Journals (Sweden)

    Susana Caires

    2003-12-01

    Full Text Available Centrado na última etapa da formação inicial de professores - os estágios pedagógicos - o presente trabalho explora alguns dos aspectos mais significativos da estreia na profissão docente. Incidindo na perspectiva dos professores-estagiários, o repertório explorado abarca as principais vivências e percepções associadas ao “tornar-se-professor”, dando a conhecer alguns dos maiores ganhos e dificuldades inerentes a este processo. Tomando as respostas de 229 professores-estagiários da Universidade do Minho no Inventário de Vivências e Percepções de Estágio (Versão para as Licenciaturas em Ensino, aplicado no início e no final do estágio, detectaram-se oscilações positivas na forma como os professores-estagiários vivenciam esta etapa formativa. Entre as cinco dimensões do questionário (“Socialização Profissional e Institucional”, “Aspectos sócio-emocionais”, “Aprendizagem e Desenvolvimento Profissional”, “Apoio/Recursos/Supervisão” e “Aspectos Vocacionais”, destaquem-se os maiores níveis de satisfação e ganho percebidos pelos sujeitos nas dimensões “Socialização Profissional e Institucional”, “Aprendizagem e Desenvolvimento Profissional” e “Aspectos Vocacionais”.Focusing on the last stage of the Initial Teacher Education - the practicum experience/preservice program - this paper explores some of the most significant aspects of the initial teaching experience. Concentrating on preservice teacher’s perspectives, the paper encloses the main experiences and perceptions related to “becoming a teacher”, presenting some of the major gains and difficulties inherent to this process. The answers of a group of 229 student teachers from Minho University to the “Inventory of Experiences and Perceptions at Practicum” (Version for Teacher Education Students, applied at the beginning and at the end of the practicum, showed positive oscillations in the way student teachers live this

  12. Exercise-induced Alteration in Brain Activity during Motor Performance under Cognitive Stress

    Science.gov (United States)

    2014-07-02

    obtained according to previous studies ( Halliday et al. 1995; Johnson & Shinohara 2012; Rosenberg et al. 1989). Perceived exertion and physiological...after exercise: a quantitative synthesis. Psychophysiology 41:563-574, 2004 Halliday DM, Rosenberg JR, Amjad AM, Breeze P, Conway BA, and Farmer SF. A...Breeze P, Brillinger DR, and Halliday DM. The Fourier approach to the identification of functional coupling between neuronal spike trains. Progress

  13. Epidemiology of Brain Tumors.

    Science.gov (United States)

    McNeill, Katharine A

    2016-11-01

    Brain tumors are the commonest solid tumor in children, leading to significant cancer-related mortality. Several hereditary syndromes associated with brain tumors are nonfamilial. Ionizing radiation is a well-recognized risk factor for brain tumors. Several industrial exposures have been evaluated for a causal association with brain tumor formation but the results are inconclusive. A casual association between the common mutagens of tobacco, alcohol, or dietary factors has not yet been established. There is no clear evidence that the incidence of brain tumors has changed over time. This article presents the descriptive epidemiology of the commonest brain tumors of children and adults.

  14. Biomechanics of the brain

    CERN Document Server

    Miller, Karol

    2011-01-01

    With contributions from scientists at major institutions, this book presents an introduction to brain anatomy for engineers and scientists. It provides, for the first time, a comprehensive resource in the field of brain biomechanics.

  15. Mild Traumatic Brain Injury

    Science.gov (United States)

    ... Videos mild Traumatic Brain Injury 94447 reads Please Log in You must be logged in to access ... Brain Injury (DCoE) to promote the processes of building resilience, facilitating recovery and supporting reintegration of returning ...

  16. Brain aneurysm repair

    Science.gov (United States)

    ... aneurysm repair; Dissecting aneurysm repair; Endovascular aneurysm repair - brain; Subarachnoid hemorrhage - aneurysm ... Your scalp, skull, and the coverings of the brain are opened. A metal clip is placed at ...

  17. Aneurysm in the brain

    Science.gov (United States)

    ... aneurysms Medical problems such as polycystic kidney disease , coarctation of the aorta , and endocarditis High blood pressure, ... Read More Aneurysm Brain aneurysm repair Brain surgery Coarctation of the aorta Endovascular embolization Epilepsy - overview Incidence ...

  18. Pediatric Brain Tumor Foundation

    Science.gov (United States)

    ... you insights into your child's treatment. LEARN MORE Brain tumors and their treatment can be deadly so ... Cancer Foundation joins the PBTF Read more >> Pediatric Brain Tumor Foundation 302 Ridgefield Court, Asheville, NC 28806 ...

  19. Genetic Brain Disorders

    Science.gov (United States)

    A genetic brain disorder is caused by a variation or a mutation in a gene. A variation is a different form ... mutation is a change in a gene. Genetic brain disorders affect the development and function of the ...

  20. Childhood Brain Tumors

    Science.gov (United States)

    Brain tumors are abnormal growths inside the skull. They are among the most common types of childhood ... still be serious. Malignant tumors are cancerous. Childhood brain and spinal cord tumors can cause headaches and ...

  1. Brain cancer spreads.

    Science.gov (United States)

    Perryman, Lara; Erler, Janine T

    2014-07-30

    The discovery that ~20% of patients with brain cancer have circulating tumor cells breaks the dogma that these cells are confined to the brain and has important clinical implications (Müller et al., this issue).

  2. Brain Death Determination.

    Science.gov (United States)

    Spinello, Irene M

    2015-09-01

    In the United States, each year 1% to 2% of deaths are brain deaths. Considerable variation in the practice of determining brain death still remains, despite the publication of practice parameters in 1995 and an evidence-based guideline update in 2010. This review is intended to give bedside clinicians an overview of definition, the causes and pitfalls of misdiagnosing brain death, and a focus on the specifics of the brain death determination process.

  3. Brain cancer spreads

    DEFF Research Database (Denmark)

    Perryman, Lara; Erler, Janine Terra

    2014-01-01

    The discovery that ~20% of patients with brain cancer have circulating tumor cells breaks the dogma that these cells are confined to the brain and has important clinical implications (Müller et al., this issue).......The discovery that ~20% of patients with brain cancer have circulating tumor cells breaks the dogma that these cells are confined to the brain and has important clinical implications (Müller et al., this issue)....

  4. Brain-Actuated Interaction

    OpenAIRE

    Millán, José del R.; Renkens, F.; Mouriño, J.; Gerstner, W.

    2004-01-01

    Over the last years evidence has accumulated that shows the possibility to analyze human brain activity on-line and translate brain states into actions such as selecting a letter from a virtual keyboard or moving a robotics device. These initial results have been obtained with either invasive approaches (requiring surgical implantation of electrodes) or synchronous protocols (where brain signals are time-locked to external cues). In this paper we describe a portable noninvasive brain-computer...

  5. Primary lymphoma of the brain

    Science.gov (United States)

    Brain lymphoma; Cerebral lymphoma; Primary lymphoma of the central nervous system; Lymphoma - brain ... The cause of primary brain lymphoma is not known. People with a weakened immune system are at high risk for primary lymphoma of the brain. ...

  6. The connected brain

    NARCIS (Netherlands)

    van den Heuvel, M.P.

    2009-01-01

    The connected brain Martijn van den Heuvel, 2009 Our brain is a network. It is a network of different brain regions that are all functionally and structurally linked to each other. In the past decades, neuroimaging studies have provided a lot of information about the specific functions of each separ

  7. Brain emotional learning based Brain Computer Interface

    Directory of Open Access Journals (Sweden)

    Abdolreza Asadi Ghanbari

    2012-09-01

    Full Text Available A brain computer interface (BCI enables direct communication between a brain and a computer translating brain activity into computer commands using preprocessing, feature extraction and classification operations. Classification is crucial as it has a substantial effect on the BCI speed and bit rate. Recent developments of brain-computer interfaces (BCIs bring forward some challenging problems to the machine learning community, of which classification of time-varying electrophysiological signals is a crucial one. Constructing adaptive classifiers is a promising approach to deal with this problem. In this paper, we introduce adaptive classifiers for classify electroencephalogram (EEG signals. The adaptive classifier is brain emotional learning based adaptive classifier (BELBAC, which is based on emotional learning process. The main purpose of this research is to use a structural model based on the limbic system of mammalian brain, for decision making and control engineering applications. We have adopted a network model developed by Moren and Balkenius, as a computational model that mimics amygdala, orbitofrontal cortex, thalamus, sensory input cortex and generally, those parts of the brain thought responsible for processing emotions. The developed method was compared with other methods used for EEG signals classification (support vector machine (SVM and two different neural network types (MLP, PNN. The result analysis demonstrated an efficiency of the proposed approach.

  8. The Blue Collar Brain

    Directory of Open Access Journals (Sweden)

    Guy eVan Orden

    2012-06-01

    Full Text Available Much effort has gone into elucidating control of the body by the brain, less so the role of the body in controlling the brain. This essay develops the idea that the brain does a great deal of work in the service of behavior that is controlled by the body, a blue collar role compared to the white collar control exercised by the body. The argument that supports a blue collar role for the brain is also consistent with recent discoveries clarifying the white collar role of synergies across the body's tensegrity structure, and the evidence of critical phenomena in brain and behavior.

  9. Neuroradiology of the Brain.

    Science.gov (United States)

    Yeager, Susan

    2016-03-01

    A variety of imaging modalities are currently used to evaluate the brain. Prior to the 1970s, neurologic imaging involved radiographs, invasive procedures for spinal and carotid artery air and contrast injection, and painful patient manipulation. The brain was considered inaccessible to imaging and referred to as "the dark continent." Since then, advances in neuroradiology have moved the brain from being a dark continent to evaluation techniques that illuminate brain contents and pathology. These advances enable quick acquisition of images for prompt diagnosis and treatment. This article reviews anatomy, diagnostic principles, and clinical application of brain imaging beyond plain radiographs.

  10. Instant BrainShark

    CERN Document Server

    Li, Daniel

    2013-01-01

    Filled with practical, step-by-step instructions and clear explanations for the most important and useful tasks. ""Instant BrainShark"" is a step-by-step guide to creating online presentations using BrainShark. The book covers digital marketing best practices alongside tips for sales conversions. The book is written in an easy-to-read style for anybody to easily pick up and get started with BrainShark.Instant BrainShark is for anyone who wants to use BrainShark to create presentations online and share them around the community. The book is also useful for developers who are looking to explore

  11. Whither brain death?

    Science.gov (United States)

    Bernat, James L

    2014-01-01

    The publicity surrounding the recent McMath and Muñoz cases has rekindled public interest in brain death: the familiar term for human death determination by showing the irreversible cessation of clinical brain functions. The concept of brain death was developed decades ago to permit withdrawal of therapy in hopeless cases and to permit organ donation. It has become widely established medical practice, and laws permit it in all U.S. jurisdictions. Brain death has a biophilosophical justification as a standard for determining human death but remains poorly understood by the public and by health professionals. The current controversies over brain death are largely restricted to the academy, but some practitioners express ambivalence over whether brain death is equivalent to human death. Brain death remains an accepted and sound concept, but more work is necessary to establish its biophilosophical justification and to educate health professionals and the public.

  12. Effect of practicum experiences on pre-professional physical education teachers' intentions toward teaching students with disabilities in general physical education classes Efeito de experiências práticas nas intenções de professores de educação física não capacitados para ensinar, na escola regular, alunos com deficiência

    Directory of Open Access Journals (Sweden)

    M. Kathleen Ellis

    2012-09-01

    Full Text Available The purpose of this study was to examine the effect of practicum experiences on pre-professional physical education teachers' intentions toward working with individuals with disabilities. Pre-professional physical education teachers were students in their respective university's PETE programs and were categorized based on level of practicum experience. Over a three year period, a total of 596 PETE students completed the Physical Educators' Intention toward Teaching Individuals with Disabilities (PEITID questionnaire (Rizzo, 2007. Significant differences were found among groups for overall intention to teach students with disabilities in their general physical education classroom. Additionally, trends of more positive intentions among pre-professionals with greater practicum experiences lead to higher Quality of Experience and Perceived Competence. The results of this study indicated that the level and quality of practicum experience significantly influence pre-professional teachers' intentions and competence toward teaching individuals with disabilities. (138 wordsO objetivo deste estudo foi examinar o efeito de experiências práticas nas intenções dos professores de educação física não capacitados com relação ao trabalho com pessoas com deficiência. Participaram da pesquisa professores de educação física matriulados como estudantes em programas de capacitação (PETE em suas respectivas universidades, categorizados com base no nível de experiência prática. Num período de três anos, 596 alunos PETE preencheram o questionário PEITID - Physical Educators' Intention toward Teaching Individuals with Disabilities (Rizzo, 2007. Foram encontradas diferenças significativas entre os grupos que tinham a intenção de ensinar alunos com deficiência em turmas regulares de educação física. Além disso, as intenções mais positivas entre os professores não capacitados com mais experiência prática se relacionam com a maior Qualidade

  13. Brain size, sex, and the aging brain.

    Science.gov (United States)

    Jäncke, Lutz; Mérillat, Susan; Liem, Franziskus; Hänggi, Jürgen

    2015-01-01

    This study was conducted to examine the statistical influence of brain size on cortical, subcortical, and cerebellar compartmental volumes. This brain size influence was especially studied to delineate interactions with Sex and Age. Here, we studied 856 healthy subjects of which 533 are classified as young and 323 as old. Using an automated segmentation procedure cortical (gray and white matter [GM and WM] including the corpus callosum), cerebellar (GM and WM), and subcortical (thalamus, putamen, pallidum, caudatus, hippocampus, amygdala, and accumbens) volumes were measured and subjected to statistical analyses. These analyses revealed that brain size and age exert substantial statistical influences on nearly all compartmental volumes. Analyzing the raw compartmental volumes replicated the frequently reported Sex differences in compartmental volumes with men showing larger volumes. However, when statistically controlling for brain size Sex differences and Sex × Age interactions practically disappear. Thus, brain size is more important than Sex in explaining interindividual differences in compartmental volumes. The influence of brain size is discussed in the context of an allometric scaling of the compartmental volumes.

  14. Tasting Teaching Flavors: A Group of Student-Teachers´ Experiences in their Practicum Saboreando el gusto de la enseñanza: Experiencias de un grupo de estudiantes-maestros en su práctica

    Directory of Open Access Journals (Sweden)

    Xatlí Zuleta Garzón

    2005-10-01

    Full Text Available Student-teachers expect their experience in the practicum to show them what teaching truly involves. Most of them are willing to put into practice all the theories and concepts they have learned and to find out if these actually work. This article reports on a study conducted on the experiences of four primary school student-teachers. The study led to the identification of their difficulties, to looking at how they felt about those difficulties, and to how they dealt with them. Instruments for data collection were the journals and group conferences used by the practice counselor and a semi-structured interview. The study revealed that a constant reflective practice allows practitioners to deal with all the different situations they have to face, and more so, to go beyond them.Los estudiantes-maestros esperan que la práctica docente les muestre lo que es realmente la enseñanza. La mayoría de ellos están deseosos de poner en práctica todas las teorías y conceptos aprendidos y averiguar si verdaderamente funcionan. Este artículo da cuenta de un estudio en el que se describe la experiencia de cuatro estudiantes-practicantes. El objetivo principal del estudio fue identificar las dificultades que enfrentan, examinar qué actitudes tuvieron frente a esas dificultades y cómo las superaron. Los instrumentos utilizados para la recolección de datos incluyeron diarios, charlas en grupo e individuales realizadas por el director de práctica y una entrevista semi-estructurada. El estudio reveló que una constante reflexión permite que los practicantes superen las dificultades y vayan más allá de las mismas.

  15. Brain iron homeostasis.

    Science.gov (United States)

    Moos, Torben

    2002-11-01

    Iron is essential for virtually all types of cells and organisms. The significance of the iron for brain function is reflected by the presence of receptors for transferrin on brain capillary endothelial cells. The transport of iron into the brain from the circulation is regulated so that the extraction of iron by brain capillary endothelial cells is low in iron-replete conditions and the reverse when the iron need of the brain is high as in conditions with iron deficiency and during development of the brain. Whereas there is good agreement that iron is taken up by means of receptor-mediated uptake of iron-transferrin at the brain barriers, there are contradictory views on how iron is transported further on from the brain barriers and into the brain extracellular space. The prevailing hypothesis for transport of iron across the BBB suggests a mechanism that involves detachment of iron from transferrin within barrier cells followed by recycling of apo-transferrin to blood plasma and release of iron as non-transferrin-bound iron into the brain interstitium from where the iron is taken up by neurons and glial cells. Another hypothesis claims that iron-transferrin is transported into the brain by means of transcytosis through the BBB. This thesis deals with the topic "brain iron homeostasis" defined as the attempts to maintain constant concentrations of iron in the brain internal environment via regulation of iron transport through brain barriers, cellular iron uptake by neurons and glia, and export of iron from brain to blood. The first part deals with transport of iron-transferrin complexes from blood to brain either by transport across the brain barriers or by uptake and retrograde axonal transport in motor neurons projecting beyond the blood-brain barrier. The transport of iron and transport into the brain was examined using radiolabeled iron-transferrin. Intravenous injection of [59Fe-125]transferrin led to an almost two-fold higher accumulation of 59Fe than of

  16. Handbook of Brain Connectivity

    CERN Document Server

    Jirsa, Viktor K

    2007-01-01

    Our contemporary understanding of brain function is deeply rooted in the ideas of the nonlinear dynamics of distributed networks. Cognition and motor coordination seem to arise from the interactions of local neuronal networks, which themselves are connected in large scales across the entire brain. The spatial architectures between various scales inevitably influence the dynamics of the brain and thereby its function. But how can we integrate brain connectivity amongst these structural and functional domains? Our Handbook provides an account of the current knowledge on the measurement, analysis and theory of the anatomical and functional connectivity of the brain. All contributors are leading experts in various fields concerning structural and functional brain connectivity. In the first part of the Handbook, the chapters focus on an introduction and discussion of the principles underlying connected neural systems. The second part introduces the currently available non-invasive technologies for measuring struct...

  17. Brain-gut interactions.

    OpenAIRE

    Bonaz, Bruno

    1994-01-01

    International audience; Our digestive tract has an autonomous functioning but also has a bidirectional relation with our brain known as brain-gut interactions. This communication is mediated by the autonomous nervous system, i.e., the sympathetic and parasympathetic nervous systems, with a mixed afferent and efferent component, and the circumventricular organs located outside the blood-brain barrier. The vagus nerve, known as the principal component of the parasympathetic nervous system, is a...

  18. Consciousness, brain, neuroplasticity

    OpenAIRE

    Askenasy, Jean; Lehmann, Joseph

    2013-01-01

    Subjectivity, intentionality, self-awareness and will are major components of consciousness in human beings. Changes in consciousness and its content following different brain processes and malfunction have long been studied. Cognitive sciences assume that brain activities have an infrastructure, but there is also evidence that consciousness itself may change this infrastructure. The two-way influence between brain and consciousness has been at the center of philosophy and less so, of science...

  19. Consciousness, brain, neuroplasticity.

    Science.gov (United States)

    Askenasy, Jean; Lehmann, Joseph

    2013-01-01

    Subjectivity, intentionality, self-awareness and will are major components of consciousness in human beings. Changes in consciousness and its content following different brain processes and malfunction have long been studied. Cognitive sciences assume that brain activities have an infrastructure, but there is also evidence that consciousness itself may change this infrastructure. The two-way influence between brain and consciousness has been at the center of philosophy and less so, of science. This so-called bottom-up and top-down interrelationship is controversial and is the subject of our article. We would like to ask: how does it happen that consciousness may provoke structural changes in the brain? The living brain means continuous changes at the synaptic level with every new experience, with every new process of learning, memorizing or mastering new and existing skills. Synapses are generated and dissolved, while others are preserved, in an ever-changing process of so-called neuroplasticity. Ongoing processes of synaptic reinforcements and decay occur during wakefulness when consciousness is present, but also during sleep when it is mostly absent. We suggest that consciousness influences brain neuroplasticity both during wakefulness as well as sleep in a top-down way. This means that consciousness really activates synaptic flow and changes brain structures and functional organization. The dynamic impact of consciousness on brain never stops despite the relative stationary structure of the brain. Such a process can be a target for medical intervention, e.g., by cognitive training.

  20. Consciousness, brain, neuroplasticity

    Directory of Open Access Journals (Sweden)

    Jean-Jacques Marcel Askenasy

    2013-07-01

    Full Text Available Subjectivity, intentionality, self-awareness and will are major components of consciousness in human beings. Changes in consciousness and its content following different brain processes and malfunction have long been studied. Cognitive sciences assume that brain activities have an infrastructure, but there is also evidence that consciousness itself may change this infrastructure. The two-way influence between brain and consciousness has been at the center of philosophy and less so, of science. This so-called bottom-up and top-down interrelationship is controversial and is the subject of our article. We would like to ask: how does it happen that consciousness may provoke structural changes in the brain?The living brain means continuous changes at the synaptic level with every new experience, with every new process of learning, memorizing or mastering new and existing skills. Synapses are generated and dissolved, while others are preserved, in an ever-changing process of so-called neuroplasticity. Ongoing processes of synaptic reinforcements and decay occur during wakefulness when consciousness is present, but also during sleep when it is mostly absent.We suggest that consciousness influences brain neuroplasticity both during wakefulness as well as sleep in a top-down way. This means that consciousness really activates synaptic flow and changes brain structures and functional organization. The dynamic impact of consciousness on brain never stops despite the relative stationary structure of the brain. Such a process can be a target for medical intervention e.g. by cognitive training.

  1. Preliminary research on the carbonyl compounds under of sea-land breeze at the west coast of the Pearl River Estuary%珠江口西岸冬季海陆风背景下羰基化合物的初步研究

    Institute of Scientific and Technical Information of China (English)

    庄延娟; 王伯光; 刘灿

    2011-01-01

    A field observation was continuously conducted at Xinken, Guangzhou, China, using DNPH-HPLC/UV method to measure the composition and the concentration of volatile carbonyl compounds under sea-land breeze in the winter period from December 7th-9th, 2008. The distribution of carbonyl and their sources were studied. The results show that 17 carbonyl species were detected with a concentration range from 7.78×10 9 to 31.78×10-9. The concentrations of most carbonyls were higher on the ground than on the roof. Acetone was the most abundant carbonyl species at Xinken,followed by formaldehyde and acetaldehyde. The three compounds accounted for more than 70% of all measured carbonyls. Two different variation trends of the carbonyl compounds at Xinken were found. The first one was on December 8th suggesting the long-distance transport of urban pollutants while the other one was on December 7th and December 9th showing the influence of sea-land breeze. Based on the ratios among formaldehyde, acetaldehyde and propanal and the component correlation analysis, it indicates that the carbonyl compounds were mainly impacted by the urban anthropogenic pollution sources which had a close relationship with the long-distance transport and sea-land breeze influence. Secondary products from atmospheric photochemical reactions and local emission from vegetation were also the important contributors.%于2008年12月7~9日对珠江三角洲新垦的大气环境进行连续加强观测,采用DNPH-HPL洲分析方法测量了冬季海陆风条件下大气挥发性羰基化合物的组成及浓度水平,研究了污染特征和来源.结果表明,新垦大气中共检测到17种挥发性羰基化合物,浓度变化范围为7.78×10-9~31.78×10-9,大多数物质地面浓度高于楼顶.其中浓度最高的污染物是丙酮,其次是甲醛和乙醛,三者占总羰基化合物浓度的比例高于70%.大气挥发性羰基化合物的浓度分布呈现出以12月8日为代表的受城区污

  2. The Emerging Scholarly Brain

    CERN Document Server

    Kurtz, Michael J

    2010-01-01

    It is now a commonplace observation that human society is becoming a coherent super-organism, and that the information infrastructure forms its emerging brain. Perhaps, as the underlying technologies are likely to become billions of times more powerful than those we have today, we could say that we are now building the lizard brain for the future organism.

  3. One brain, two selves

    NARCIS (Netherlands)

    Reinders, AATS; Nijenhuis, ERS; Paans, AMJ; Korf, J; Willemsen, ATM; den Boer, JA

    2003-01-01

    Having a sense of self is an explicit and high-level functional specialization of the human brain. The anatomical localization of self-awareness and the brain mechanisms involved in consciousness were investigated by functional neuroimaging different emotional mental states of core consciousness in

  4. Demystifying the Adolescent Brain

    Science.gov (United States)

    Steinberg, Laurence

    2011-01-01

    Understanding the nature of brain development in adolescence helps explain why adolescents can vacillate so often between mature and immature behavior. Early and middle adolescence, in particular, are times of heightened vulnerability to risky and reckless behavior because the brain's reward center is easily aroused, but the systems that control…

  5. The Resilient Brain

    Science.gov (United States)

    Brendtro, Larry K.; Longhurst, James E.

    2005-01-01

    Brain research opens new frontiers in working with children and youth experiencing conflict in school and community. Blending this knowledge with resilience science offers a roadmap for reclaiming those identified as "at risk." This article applies findings from resilience research and recent brain research to identify strategies for reaching…

  6. Radiation Injury to the Brain

    Science.gov (United States)

    ... Tumors Brain Tumors Brain Disorders AVMs Radiosurgery Gamma Knife Linac Radiotherapy Overview Childhood Brain Tumors IMRT Radiation Therapy Radiation Injury Treatment Day Making a Decision Centers of Excellence Publications Definitions Q & ...

  7. Teen Brain: Still Under Construction

    Science.gov (United States)

    ... Brain Reprints For more information Share The Teen Brain: Still Under Construction Download PDF Download ePub Order ... the ups and downs of adolescence. The "Visible" Brain A clue to the degree of change taking ...

  8. Coping changes the brain

    Directory of Open Access Journals (Sweden)

    Jordan M. Nechvatal

    2013-02-01

    Full Text Available One of the earliest and most consistent findings in behavioral neuroscience research is that learning changes the brain. Here we consider how learning as an aspect of coping in the context of stress exposure induces neuroadaptations that enhance emotion regulation and resilience. A systematic review of the literature identified 15 brain imaging studies in which humans with specific phobias or posttraumatic stress disorder were randomized to stress exposure therapies that diminished subsequent indications of anxiety. Most of these studies focused on functional changes in the amygdala and anterior corticolimbic brain circuits that control cognitive, motivational, and emotional aspects of physiology and behavior. Corresponding structural brain changes and the timing, frequency, and duration of stress exposure required to modify brain functions remain to be elucidated in future research. These studies will advance our understanding of coping as a learning process and provide mechanistic insights for the development of new interventions that promote stress coping skills.

  9. Epilepsy and Brain Tumors

    Institute of Scientific and Technical Information of China (English)

    Zhi-yi Sha

    2009-01-01

    @@ Epidemiology It is estimated 61,414 new cases of primary brain tumors are expected to be diagnosed in 2009 in the U.S. The incidence statistic of 61,414 persons diagnosed per year includes both malignant (22,738) and non-malignant (38,677) brain tumors. (Data from American Brain Tumor Association). During the years 2004-2005, approximately 359,000 people in the United States were living with the diagnosis of a primary brain or central nervous system tumor. Specifically, more than 81,000 persons were living with a malignant tumor, more than 267,000 persons with a benign tumor. For every 100,000 people in the United States, approximately 131 are living following the diagnosis of a brain tumor. This represents a prevalence rate of 130.8 per 100,000 person years[1].

  10. Brain Fingerprinting Technology

    Directory of Open Access Journals (Sweden)

    Ms.J.R.Rajput

    2015-01-01

    Full Text Available Brain Fingerprinting is a new computer-based technology to identify the perpetrator of a crime accurately and scientifically by measuring brain-wave responses to crime-relevant words or pictures presented on a computer screen. Brain Fingerprinting has proven 100% accurate in over 120 tests, including tests on FBI agents, tests for a US intelligence agency and for the US Navy, and tests on real-life situations including felony crimes. Brain fingerprinting is based on finding that the brain generates a unique brain wave pattern when a person encounters a familiar stimulus Use of functional magnetic resonance imaging in lie detection derives from studies suggesting that persons asked to lie show different patterns of brain activity than they do when being truthful. Issues related to the use of such evidence in courts are discussed. The author concludes that neither approach is currently supported by enough data regarding its accuracy in detecting deception to warrant use in court. In the field of criminology, a new lie detector has been developed in the United States of America. This is called “brain fingerprinting”. This invention is supposed to be the best lie detector available as on date and is said to detect even smooth criminals who pass the polygraph test (the conventional lie detector test with ease. The new method employs brain waves, which are useful in detecting whether the person subjected to the test, remembers finer details of the crime. Even if the person willingly suppresses the necessary information, the brain wave is sure to trap him, according to the experts, who are very excited about the new kid on the block.

  11. Selective vulnerability in brain hypoxia

    DEFF Research Database (Denmark)

    Cervos-Navarro, J.; Diemer, Nils Henrik

    1991-01-01

    Neuropathology, selective vulnerability, brain hypoxia, vascular factors, excitotoxicity, ion homeostasis......Neuropathology, selective vulnerability, brain hypoxia, vascular factors, excitotoxicity, ion homeostasis...

  12. Investigation on medical students' attitudes towards body donation and human anatomy practicum%医学生对遗体捐献及人体解剖学实习态度的调查

    Institute of Scientific and Technical Information of China (English)

    赵晗洁; 张鹏; 李震中; 樊平

    2012-01-01

    目的 调查当前人体解剖学教学遗体的使用情况及医学生对遗体捐献和解剖实习课的态度,为人体解剖学教学提供建议.方法 对河北医科大学300名在校生进行现场问卷调查,对所得数据进行对比分析.结果 解剖实习课教学用尸体数量严重不足,直接影响解剖教学质量;医学生对解剖实习课态度欠佳,对遗体捐献了解程度较低;影响遗体捐献的主要因素是传统观念、缺乏人文关怀和遗体捐献程序复杂.结论 应对遗体捐献工作加强宣传、做好人文关怀;简化捐献程序、加强立法,以缓解解剖实习课尸源不足;通过教学改革提高学生解剖课实习兴趣及人文素养.%Objective To investigate the current application of teaching cadavers and attitudes of medical students towards body donation and anatomy practicum and to make proposals on teaching and learning of human anatomy.Methods A on the spot questionnaire survey among 300 students studying in Hebei Medical University was conducted and the acquired data were contrasted analyzed.Results The teaching cadavers were insufficient and the quality of anatomy education was directly affected.Medical students took unfavorable attitudes towards anatomy practice and knew little about body donation.The main factors affected body donations were traditional concepts,lack of humanistic concern and complicated procedures of donation.Conclusions The short of teaching cadavers would be relieved by enhancing propaganda and legislation,emphasizing humanistic concern,simplifying procedures of donation.By means of anatomy teaching reformations,the learning interest and humanistic literacy of medical students are supposed to be improved.

  13. Lutein and Brain Function

    Directory of Open Access Journals (Sweden)

    John W. Erdman

    2015-10-01

    Full Text Available Lutein is one of the most prevalent carotenoids in nature and in the human diet. Together with zeaxanthin, it is highly concentrated as macular pigment in the foveal retina of primates, attenuating blue light exposure, providing protection from photo-oxidation and enhancing visual performance. Recently, interest in lutein has expanded beyond the retina to its possible contributions to brain development and function. Only primates accumulate lutein within the brain, but little is known about its distribution or physiological role. Our team has begun to utilize the rhesus macaque (Macaca mulatta model to study the uptake and bio-localization of lutein in the brain. Our overall goal has been to assess the association of lutein localization with brain function. In this review, we will first cover the evolution of the non-human primate model for lutein and brain studies, discuss prior association studies of lutein with retina and brain function, and review approaches that can be used to localize brain lutein. We also describe our approach to the biosynthesis of 13C-lutein, which will allow investigation of lutein flux, localization, metabolism and pharmacokinetics. Lastly, we describe potential future research opportunities.

  14. Cannabinoids on the Brain

    Directory of Open Access Journals (Sweden)

    Andrew J. Irving

    2002-01-01

    Full Text Available Cannabis has a long history of consumption both for recreational and medicinal uses. Recently there have been significant advances in our understanding of how cannabis and related compounds (cannabinoids affect the brain and this review addresses the current state of knowledge of these effects. Cannabinoids act primarily via two types of receptor, CB1 and CB2, with CB1 receptors mediating most of the central actions of cannabinoids. The presence of a new type of brain cannabinoid receptor is also indicated. Important advances have been made in our understanding of cannabinoid receptor signaling pathways, their modulation of synaptic transmission and plasticity, the cellular targets of cannabinoids in different central nervous system (CNS regions and, in particular, the role of the endogenous brain cannabinoid (endocannabinoid system. Cannabinoids have widespread actions in the brain: in the hippocampus they influence learning and memory; in the basal ganglia they modulate locomotor activity and reward pathways; in the hypothalamus they have a role in the control of appetite. Cannabinoids may also be protective against neurodegeneration and brain damage and exhibit anticonvulsant activity. Some of the analgesic effects of cannabinoids also appear to involve sites within the brain. These advances in our understanding of the actions of cannabinoids and the brain endocannabinoid system have led to important new insights into neuronal function which are likely to result in the development of new therapeutic strategies for the treatment of a number of key CNS disorders.

  15. Bilirubin oxidation in brain.

    Science.gov (United States)

    Hansen, T W

    2000-01-01

    Bilirubin is a product of heme catabolism which by virtue of its lipid solubility can cross the blood-brain barrier and enter the brain. Neonatal jaundice is a common transitional phenomenon which is due to the combination of increased heme catabolism and rate limitations as far as hepatic conjugation and biliary excretion of bilirubin. In the great majority of cases this is an innocuous condition, which is even posited to have some beneficial effects due to the ability of bilirubin to quench free oxygen radicals. However, because bilirubin is neurotoxic, hyperbilirubinemia in the newborn may exceptionally result in death in the neonatal period, or survival with severe neurological sequelae (kernicterus). Bilirubin enters the brain through an intact blood-brain barrier. Clearance of bilirubin from brain partly involves retro-transfer through the blood-brain barrier, and possibly also through the brain-CSF barrier into CSF. Work in our lab during the past 5 years has substantiated earlier work which had suggested that bilirubin may also be metabolized in brain. The responsible enzyme is found on the inner mitochondrial membrane, and oxidizes bilirubin at a rate of 100-300 pmol bilirubin/mg protein/minute. The enzyme activity is lower in the newborn compared with the mature animal, and is also lower in neurons compared with glia. Studies of different rat strains have documented genetic variability. The enzyme is cytochrome-c-dependent, but has as yet not been unequivocally identified. The rate of oxidation of bilirubin is such that this enzyme probably contributes meaningfully to the clearance of bilirubin from brain.

  16. [Soul and brain].

    Science.gov (United States)

    Lain Entralgo, P

    1993-01-01

    After an overview of Medieval and Modern World thought on the questions of relations between the soul and the brain, the author presents the ideas--mostly representative of the majority of medical thinking--of two medical authors from the end of the XIX and beginning of the XX centuries: Paul Flechsig and Santiago Ramón y Cajal. Both support the idea that research into the brain may prove to be the principal resource for the construction of a scientific theory on the soul. Brain research would therefore result in the rational belief in the inmortality of the soul and the rational knowledge and government of Man's psychic life.

  17. Brain Projects Think Big

    OpenAIRE

    Segev, Idan; Schürmann, Felix

    2013-01-01

    When you read these words, hundreds of millions of nerve cells are electrically and chemically active in your brain. This activity enables you to recognize words, sense the world, learn, enjoy, and create new things, and be curious about the world around you. Indeed, our brains – those of Homo sapiens – are the most fascinating physical substances ever to have emerged on earth, some 200,000 years ago. The brain is so curious and ambitious that it strives to understand itself and cure its frag...

  18. Brain Drain: A Child's Brain on Poverty. Poverty Fact Sheet

    Science.gov (United States)

    Damron, Neil

    2015-01-01

    "Brain Drain: A Child's Brain on Poverty," released in March 2015 and prepared by intern Neil Damron, explores the brain's basic anatomy and recent research findings suggesting that poverty affects the brain development of infants and young children and the potential lifelong effects of the changes. The sheet draws from a variety of…

  19. Postnatal brain development

    DEFF Research Database (Denmark)

    Jernigan, Terry L; Baaré, William F C; Stiles, Joan;

    2011-01-01

    constantly with the environment. This is a protracted process, beginning in the third week of gestation and continuing into early adulthood. Reviewed here are studies using structural imaging techniques, with a special focus on diffusion weighted imaging, describing age-related brain maturational changes......After birth, there is striking biological and functional development of the brain's fiber tracts as well as remodeling of cortical and subcortical structures. Behavioral development in children involves a complex and dynamic set of genetically guided processes by which neural structures interact...... in children and adolescents, as well as studies that link these changes to behavioral differences. Finally, we discuss evidence for effects on the brain of several factors that may play a role in mediating these brain-behavior associations in children, including genetic variation, behavioral interventions...

  20. Postnatal brain development

    DEFF Research Database (Denmark)

    Jernigan, Terry L; Baaré, William F C; Stiles, Joan

    2011-01-01

    After birth, there is striking biological and functional development of the brain's fiber tracts as well as remodeling of cortical and subcortical structures. Behavioral development in children involves a complex and dynamic set of genetically guided processes by which neural structures interact...... constantly with the environment. This is a protracted process, beginning in the third week of gestation and continuing into early adulthood. Reviewed here are studies using structural imaging techniques, with a special focus on diffusion weighted imaging, describing age-related brain maturational changes...... in children and adolescents, as well as studies that link these changes to behavioral differences. Finally, we discuss evidence for effects on the brain of several factors that may play a role in mediating these brain-behavior associations in children, including genetic variation, behavioral interventions...

  1. Brain versus Machine Control.

    Directory of Open Access Journals (Sweden)

    Jose M Carmena

    2004-12-01

    Full Text Available Dr. Octopus, the villain of the movie "Spiderman 2", is a fusion of man and machine. Neuroscientist Jose Carmena examines the facts behind this fictional account of a brain- machine interface

  2. Brains on video games.

    Science.gov (United States)

    Bavelier, Daphne; Green, C Shawn; Han, Doug Hyun; Renshaw, Perry F; Merzenich, Michael M; Gentile, Douglas A

    2011-11-18

    The popular press is replete with stories about the effects of video and computer games on the brain. Sensationalist headlines claiming that video games 'damage the brain' or 'boost brain power' do not do justice to the complexities and limitations of the studies involved, and create a confusing overall picture about the effects of gaming on the brain. Here, six experts in the field shed light on our current understanding of the positive and negative ways in which playing video games can affect cognition and behaviour, and explain how this knowledge can be harnessed for educational and rehabilitation purposes. As research in this area is still in its early days, the contributors of this Viewpoint also discuss several issues and challenges that should be addressed to move the field forward.

  3. Right Hemisphere Brain Damage

    Science.gov (United States)

    ... or hemispheres. Each hemisphere is responsible for different body functions and skills. In most people, the left side of the brain contains the person's language functions. The right side contributes to a number ...

  4. Brain Tumors and Fatigue

    Science.gov (United States)

    ... can help calm the mind. Meditation, guided imagery, music therapy, and yoga are just a few worth investigating. Home Donor and Privacy Policies Find Resources Disclaimer Donate Subscribe Login American Brain Tumor Association 8550 W. Bryn Mawr Ave. Ste ...

  5. Deep brain stimulation

    Science.gov (United States)

    ... a device called a neurostimulator to deliver electrical signals to the areas of the brain that control ... neurostimulator, which puts out the electric current. The stimulator is similar to a heart ...

  6. Pediatric brain tumors

    Energy Technology Data Exchange (ETDEWEB)

    Poussaint, Tina Y. [Department of Radiology, Boston, MA (United States); Panigrahy, Ashok [Children' s Hospital of Pittsburgh of University of Pittsburgh Medical Center, Department of Radiology, Pittsburgh, PA (United States); Huisman, Thierry A.G.M. [Charlotte R. Bloomberg Children' s Center, Johns Hopkins Hospital, Division of Pediatric Radiology and Pediatric Neuroradiology, Baltimore, MD (United States)

    2015-09-15

    Among all causes of death in children from solid tumors, pediatric brain tumors are the most common. This article includes an overview of a subset of infratentorial and supratentorial tumors with a focus on tumor imaging features and molecular advances and treatments of these tumors. Key to understanding the imaging features of brain tumors is a firm grasp of other disease processes that can mimic tumor on imaging. We also review imaging features of a common subset of tumor mimics. (orig.)

  7. Brain derived neurotrophic factor

    DEFF Research Database (Denmark)

    Mitchelmore, Cathy; Gede, Lene

    2014-01-01

    Brain Derived Neurotrophic Factor (BDNF) is a neurotrophin with important functions in neuronal development and neuroplasticity. Accumulating evidence suggests that alterations in BDNF expression levels underlie a variety of psychiatric and neurological disorders. Indeed, BDNF therapies are curre......Brain Derived Neurotrophic Factor (BDNF) is a neurotrophin with important functions in neuronal development and neuroplasticity. Accumulating evidence suggests that alterations in BDNF expression levels underlie a variety of psychiatric and neurological disorders. Indeed, BDNF therapies...

  8. Operation Brain Trauma Therapy

    Science.gov (United States)

    2014-10-01

    positive reports. However, recent reviews from the field of cancer suggest that often the literature on pre-clinical work is over-inflated –even when...in microglia cells in the brain, although it is also present in macrophages in the peripheral compartments. Importantly Iba-1 is highly up- regulated... ultrastructural analyses were performed. These studies confirmed the diffuse nature of the axonal injury while also confirming that the brain regions assessed

  9. Transcranial brain stimulation: closing the loop between brain and stimulation

    DEFF Research Database (Denmark)

    Karabanov, Anke; Thielscher, Axel; Siebner, Hartwig Roman

    2016-01-01

    PURPOSE OF REVIEW: To discuss recent strategies for boosting the efficacy of noninvasive transcranial brain stimulation to improve human brain function. RECENT FINDINGS: Recent research exposed substantial intra- and inter-individual variability in response to plasticity-inducing transcranial brain...... transcranial brain stimulation. Priming interventions or paired associative stimulation can be used to ‘standardize’ the brain-state and hereby, homogenize the group response to stimulation. Neuroanatomical and neurochemical profiling based on magnetic resonance imaging and spectroscopy can capture trait......-related and state-related variability. Fluctuations in brain-states can be traced online with functional brain imaging and inform the timing or other settings of transcranial brain stimulation. State-informed open-loop stimulation is aligned to the expression of a predefined brain state, according to prespecified...

  10. Brain hypoxia imaging

    Energy Technology Data Exchange (ETDEWEB)

    Song, Ho Chun [Chonnam National University Medical School, Gwangju (Korea, Republic of)

    2007-04-15

    The measurement of pathologically low levels of tissue pO{sub 2} is an important diagnostic goal for determining the prognosis of many clinically important diseases including cardiovascular insufficiency, stroke and cancer. The target tissues nowadays have mostly been tumors or the myocardium, with less attention centered on the brain. Radiolabelled nitroimidazole or derivatives may be useful in identifying the hypoxic cells in cerebrovascular disease or traumatic brain injury, and hypoxic-ischemic encephalopathy. In acute stroke, the target of therapy is the severely hypoxic but salvageable tissue. {sup 18}F-MISO PET and {sup 99m}Tc-EC-metronidazole SPECT in patients with acute ischemic stroke identified hypoxic tissues and ischemic penumbra, and predicted its outcome. A study using {sup 123}I-IAZA in patient with closed head injury detected the hypoxic tissues after head injury. Up till now these radiopharmaceuticals have drawbacks due to its relatively low concentration with hypoxic tissues associated with/without low blood-brain barrier permeability and the necessity to wait a long time to achieve acceptable target to background ratios for imaging in acute ischemic stroke. It is needed to develop new hypoxic marker exhibiting more rapid localization in the hypoxic region in the brain. And then, the hypoxic brain imaging with imidazoles or non-imidazoles may be very useful in detecting the hypoxic tissues, determining therapeutic strategies and developing therapeutic drugs in several neurological disease, especially, in acute ischemic stroke.

  11. Pediatric brain death determination.

    Science.gov (United States)

    Mathur, Mudit; Ashwal, Stephen

    2015-04-01

    Clinical guidelines for the determination of brain death in children were first published in 1987. These guidelines were revised in 2011 under the auspices of the Society of Critical Care Medicine, the American Academy of Pediatrics, and the Child Neurology Society, and provide the minimum standards that must be satisfied before brain death can be declared in infants and children. After achieving physiologic stability and exclusion of confounders, two examinations including apnea testing separated by an observation period (24 hours for term newborns up to 30 days of age, and 12 hours for infants and children from 31 days up to 18 years) are required to establish brain death. Apnea testing should demonstrate a final arterial PaCO2 20 mm Hg above the baseline and ≥ 60 mm Hg with no respiratory effort during the testing period. Ancillary studies (electroencephalogram and radionuclide cerebral blood flow) are not required to establish brain death and are not a substitute for the neurologic examination. The committee concluded that ancillary studies may be used (1) when components of the examination or apnea testing cannot be completed, (2) if uncertainty about components of the neurologic examination exists, (3) if a medication effect may be present, or (4) to reduce the interexamination observation period. When ancillary studies are used, a second clinical examination and apnea test should still be performed and components that can be completed must remain consistent with brain death.

  12. Imaging brain plasticity after trauma

    Institute of Scientific and Technical Information of China (English)

    Zhifeng Kou; Armin Iraji

    2014-01-01

    The brain is highly plastic after stroke or epilepsy;however, there is a paucity of brain plasticity investigation after traumatic brain injury (TBI). This mini review summarizes the most recent evidence of brain plasticity in human TBI patients from the perspective of advanced magnetic resonance imaging. Similar to other forms of acquired brain injury, TBI patients also demonstrat-ed both structural reorganization as well as functional compensation by the recruitment of other brain regions. However, the large scale brain network alterations after TBI are still unknown, and the ifeld is still short of proper means on how to guide the choice of TBI rehabilitation or treat-ment plan to promote brain plasticity. The authors also point out the new direction of brain plas-ticity investigation.

  13. Scintigraphic evaluation of brain death

    Energy Technology Data Exchange (ETDEWEB)

    Park, C. H.; Bai, M. S.; Cho, K. K.; Kim, S. J.; Yoon, S. N.; Cho, C. W. [College of Medicine, Ajou Univ., Suwon (Korea, Republic of)

    1997-07-01

    A law recognizing brain death is a life saving legal measure in patients suffering from badly diseased organs such as kidney, liver, heart, and lung. Such law is being discussed for legalization at the Korean National Assembly. There are various criteria used for brain death in western world and brain scintiscan is one of them. However, the scintiscan is not considered in establishing brain death in the draft of the law. The purpose of this report is to spread this technique in nuclear medicine society as well as in other medical societies. We evaluated 7 patients with clinical suspicion of brain death by various causes. The patient's age ranged from 5 to 39 years. We used 5-20mCi {sup 99m}Tc-HMPAO (d.1-hexamethyl propylene amine oxime) or ECD (Ethyl Cysteinate Dimer), lipophilic agents that cross BBB (blood brain barrier). A dynamic study followed by static or SPECT (single photon emission tomography) was performed. Interpretive criteria used for brain death were 1) no intracranial circulation 2) no brain uptake. The second criteria is heavily used. Five of 7 patients were scintigraphically brain dead and the remaining 2 had some brain uptake excluding the diagnosis of scintigraphic brain death. In conclusion, cerebral perfusion study using a lipophilic brain tracer offers a noninvasive, rapid, easy, accurate and reliable mean in the diagnosis of brain death. We believe that this modality should be included in the criteria of brain death in the draft of the proposed Korean law.

  14. Brain Network Modelling

    DEFF Research Database (Denmark)

    Andersen, Kasper Winther

    Three main topics are presented in this thesis. The first and largest topic concerns network modelling of functional Magnetic Resonance Imaging (fMRI) and Diffusion Weighted Imaging (DWI). In particular nonparametric Bayesian methods are used to model brain networks derived from resting state f...... for their ability to reproduce node clustering and predict unseen data. Comparing the models on whole brain networks, BCD and IRM showed better reproducibility and predictability than IDM, suggesting that resting state networks exhibit community structure. This also points to the importance of using models, which...... allow for complex interactions between all pairs of clusters. In addition, it is demonstrated how the IRM can be used for segmenting brain structures into functionally coherent clusters. A new nonparametric Bayesian network model is presented. The model builds upon the IRM and can be used to infer...

  15. Mind, brain and psychotherapy

    Directory of Open Access Journals (Sweden)

    Sheth Hitesh

    2009-01-01

    Full Text Available There is long-standing debate about superiority of mind over brain, in other words about superiority of mind over matter. And outcome of this debate is going to decide future of psychiatry. The psychiatrists believing in materialism may say that brain is all and by changing neurotransmitters level with new molecules of drugs would cure all illnesses. On the other hand, antipsychiatry activists and some psychotherapists oppose all types of treatment despite of convincing evidence that drug therapy is effective (although sometimes it is not as effective as it claims to be. However, truth lies somewhere in between. Pharmacotherapy and psychotherapy are like two legs of psychiatry and psychiatry cannot walk into a future on one leg. The studies have shown that judicious use of pharmacotherapy along with psychotherapy gives better outcome than any one of them used alone. We must heal dichotomy between mind and brain before we heal the patients.

  16. Brain abscess: Current management

    Directory of Open Access Journals (Sweden)

    Hernando Alvis-Miranda

    2013-01-01

    Full Text Available Brain abscess (BA is defined as a focal infection within the brain parenchyma, which starts as a localized area of cerebritis, which is subsequently converted into a collection of pus within a well-vascularized capsule. BA must be differentiated from parameningeal infections, including epidural abscess and subdural empyema. The BA is a challenge for the neurosurgeon because it is needed good clinical, pharmacological, and surgical skills for providing good clinical outcomes and prognosis to BA patients. Considered an infrequent brain infection, BA could be a devastator entity that easily left the patient into dead. The aim of this work is to review the current concepts regarding epidemiology, pathophysiology, etiology, clinical presentation, diagnosis, and management of BA.

  17. Brain abscess: Current management

    Science.gov (United States)

    Alvis Miranda, Hernando; Castellar-Leones, Sandra Milena; Elzain, Mohammed Awad; Moscote-Salazar, Luis Rafael

    2013-01-01

    Brain abscess (BA) is defined as a focal infection within the brain parenchyma, which starts as a localized area of cerebritis, which is subsequently converted into a collection of pus within a well-vascularized capsule. BA must be differentiated from parameningeal infections, including epidural abscess and subdural empyema. The BA is a challenge for the neurosurgeon because it is needed good clinical, pharmacological, and surgical skills for providing good clinical outcomes and prognosis to BA patients. Considered an infrequent brain infection, BA could be a devastator entity that easily left the patient into dead. The aim of this work is to review the current concepts regarding epidemiology, pathophysiology, etiology, clinical presentation, diagnosis, and management of BA. PMID:24174804

  18. Brains, genes, and primates.

    Science.gov (United States)

    Izpisua Belmonte, Juan Carlos; Callaway, Edward M; Caddick, Sarah J; Churchland, Patricia; Feng, Guoping; Homanics, Gregg E; Lee, Kuo-Fen; Leopold, David A; Miller, Cory T; Mitchell, Jude F; Mitalipov, Shoukhrat; Moutri, Alysson R; Movshon, J Anthony; Okano, Hideyuki; Reynolds, John H; Ringach, Dario; Sejnowski, Terrence J; Silva, Afonso C; Strick, Peter L; Wu, Jun; Zhang, Feng

    2015-05-06

    One of the great strengths of the mouse model is the wide array of genetic tools that have been developed. Striking examples include methods for directed modification of the genome, and for regulated expression or inactivation of genes. Within neuroscience, it is now routine to express reporter genes, neuronal activity indicators, and opsins in specific neuronal types in the mouse. However, there are considerable anatomical, physiological, cognitive, and behavioral differences between the mouse and the human that, in some areas of inquiry, limit the degree to which insights derived from the mouse can be applied to understanding human neurobiology. Several recent advances have now brought into reach the goal of applying these tools to understanding the primate brain. Here we describe these advances, consider their potential to advance our understanding of the human brain and brain disorders, discuss bioethical considerations, and describe what will be needed to move forward.

  19. Metastatic Brain Tumors

    Directory of Open Access Journals (Sweden)

    Ersin Haciyakupoglu

    2014-04-01

    Full Text Available Metastatic tumor is secondary spread to the central nervous system of primer systemic cancers originating from tissues other than the central nervous system. In adults; there are metastases respectively from lungs, breasts, malign melanoma, renal cell carcinoma, colon and thyroid cancers. 30-60% of lung cancers metastasis to the brain. In children there are quite a few cerebral metastases. Most commonly leukemia, lymphoma, osteogenic sarcoma, rhabdomyosarcoma and germ cell tumors metastasis to the brain. %50 of malign melanoma, lung, breast and colon cancers intend to make multipl metastases but renal cell cancers intend to make solitary metastasis.While lung cancers metastasis to brain in 6-9 months after the definitive diagnosis, renal cancers in 1 year, colon cancers in 2 years, breast cancers and malign melanoma in 3 years metastasis to brain. In 6% of cases there are cerebral metastasis while there isn’t a symptom of a primary tumor. For treatment corticosteroids, surgery, Radiotherapy(RT, Chemotherapy(CT and Stereotactic Radiosurgery(SRS can be implemented. Small cell lung cancers, lymphoma, germ cell tumors are sensitive to RT and CT. Non small cell lung cancers, renal, colon cancers and malign melanoma are radioresistant. The purposes in the surgery of the metastatic brain tumors are; total resection of tumors without neurologic deficits, decreasing the intracranial pressure and decreasing the dose of postoperative radiotherapy. Key Words: Metastatic brain tumors, Stereotactic radiosurgery, Malign melanoma, Lung cancers, Renal cell carcinoma, Radiotherapy, Chemotherapy [Cukurova Med J 2014; 39(2.000: 191-202

  20. Contextualizing aquired brain damage

    DEFF Research Database (Denmark)

    Nielsen, Charlotte Marie Bisgaard

    2014-01-01

    Contextualizing aquired brain damage Traditional approaches study ’communicational problems’ often in a discourse of disabledness or deficitness. With an ontology of communcation as something unique and a presupposed uniqueness of each one of us, how could an integrational approach (Integrational...... for people with aquired brain injuries will be presented and comparatively discussed in a traditional versus an integrational perspective. Preliminary results and considerations on ”methods” and ”participation” from this study will be presented along with an overview of the project's empirical data....

  1. Brain Image Motion Correction

    DEFF Research Database (Denmark)

    Jensen, Rasmus Ramsbøl; Benjaminsen, Claus; Larsen, Rasmus

    2015-01-01

    The application of motion tracking is wide, including: industrial production lines, motion interaction in gaming, computer-aided surgery and motion correction in medical brain imaging. Several devices for motion tracking exist using a variety of different methodologies. In order to use such devices...... offset and tracking noise in medical brain imaging. The data are generated from a phantom mounted on a rotary stage and have been collected using a Siemens High Resolution Research Tomograph for positron emission tomography. During acquisition the phantom was tracked with our latest tracking prototype...

  2. Brain, body and culture

    DEFF Research Database (Denmark)

    Geertz, Armin W.

    2010-01-01

    This essay sketches out a biocultural theory of religion which is based on an expanded view of cognition that is anchored in brain and body (embrained and embodied), deeply dependent on culture (enculturated) and extended and distributed beyond the borders of individual brains. Such an approach...... uniquely accommodates contemporary cultural and neurobiological sciences. Since the challenge that the study of religion faces, in my opinion, is at the interstices of these sciences, I have tried to develop a theory of religion which acknowledges the fact. My hope is that the theory can be of use...

  3. Osmotherapy in brain edema

    DEFF Research Database (Denmark)

    Grände, Per-Olof; Romner, Bertil

    2012-01-01

    on outcome, or leads to worse outcome. Here we describe the action and potentially beneficial and adverse effects of the 2 most commonly used osmotic solutions, mannitol and hypertonic saline, and present some critical aspects of their use. There is a well-documented transient intracranial pressure (ICP......, osmotherapy can be negative for outcome, which may explain why we lack scientific support for its use. These drawbacks, and the fact that the most recent Cochrane meta-analyses of osmotherapy in brain edema and stroke could not find any beneficial effects on outcome, make routine use of osmotherapy in brain...

  4. Staff-Development Program. Maxi I Practicum.

    Science.gov (United States)

    Tutalo, Anthony J.

    Described are various aspects of a program to train school personnel to meet the special needs of mainstreamed children. The staff development program is discussed in terms of program responsibility, strategy, and steps taken by the principal in the implementation procedure. The four stages of Project RETAP, a special education in-service program…

  5. A Practicum for Oral Cancer Teaching.

    Science.gov (United States)

    Barr, Charles E.; Goldberg, Marshal D.

    1983-01-01

    A hospital-based method for teaching general practice dental residents, involving patients for whom the residents are responsible, is described. Residents present prepared cases of dental patients according to a predetermined protocol: a talk, complete documentation of clinical history and laboratory findings, and discussion of therapy and…

  6. Focus Group Effects on Field Practicum Preferences

    Science.gov (United States)

    Sandel, Mark H.; Cohen, Harriet L.; Thomas, Cecilia L.; Barton, Thomas R.

    2006-01-01

    During the coming years the need for professionals to work with the nation's elders will increase several fold. This will place a great responsibility on university educational programs to prepare enough qualified future professionals to work in the greatly expanding field of gerontology. Prior research has identified several nonacademic and…

  7. Preceptor Leadership Style and the Nursing Practicum.

    Science.gov (United States)

    Lockwood-Rayermann, Suzy

    2003-01-01

    Preceptors' leadership characteristics influence nursing students' clinical experience. Preceptors' leadership styles can be assessed with the Myers Briggs Type Indicator or Hersey and Blanchard's Leader Behavior Analysis II instrument, which identifies four styles based on situational leadership. (Contains 25 references.) (SK)

  8. An Evaluation of Teaching Practice: Practicum

    Directory of Open Access Journals (Sweden)

    Aijaz Ahmed Gujjar

    2011-12-01

    Full Text Available Teaching practice is an important place in teacher training, it is the theoretical part of teacher training. The purpose of this study was to evaluate the teaching practice, for the purpose a 22 item questionnaire was developed and pilot tested, the internal consistency (Cronbach Alpha value of the questionnaire was 0.73.Five research questions were made for the study. 650 student teachers throughout the country from 26 teacher training institutions were considered the sample of the study, by selecting 25 student teachers randomly from each institution. The data collected through questionnaire was coded and analyzed through SPSS XII and Stat Pac calculator in terms of frequency, percentage and chi square. The study finds that majority of the student teachers is not given demonstration lessons in all the subjects, duration of teaching practice is not appropriate to develop teaching skills, the method of evaluation in practical component is not appropriate, choice of the student teachers is not considered while assigning the lesson, proportion of theory and practice not appropriate. It is recommended that that the student teachers should be given demonstration lessons before practice teaching, the duration of the teaching practice may be increased, theory and practice should be made proportionate, the student teachers should be made responsible for what they do, this can only be achieved if their choice in the selection of lesson is also considered.

  9. A Reflective Approach to Teaching Practicum Debriefing

    Science.gov (United States)

    Minott, Mark A.

    2012-01-01

    Over the past 20 years, the teaching profession has embraced the notion of the teacher as reflective practitioner, which has led to an increased emphasis on teacher education programs offering learning experiences that model and encourage reflective practice. This qualitative instrumental case study research explored the usefulness, benefits, and…

  10. Why is there confusion in practicum terminology?

    NARCIS (Netherlands)

    Hennissen, Paul; Crasborn, Frank

    2012-01-01

    Uitgaande van de verschillende relaties van opleiders en begeleiders van leraren ten opzichte van nieuwe leraren die zij op de werkplek ondersteunen, wordt in deze bijdrage een onderscheid gemaakt in drie verschillende ‘typen’ lerarenopleiders en de uiteenlopende benamingen daarvoor. Daarbij wordt t

  11. Brain and Behavior Research Foundation.

    Science.gov (United States)

    ... Stress Disorder View All > Donate DONATE TODAY! > The Brain & Behavior Research Foundation is committed to alleviating the suffering caused ... and breakthroughs in scientific research. Copyright © 2016 the brain & behavior research foundation Privacy Policy Legal Notices and Disclaimers

  12. Development of the Young Brain

    Medline Plus

    Full Text Available ... Health (2 items) Military Service Members (1 item) Prevention Suicide Prevention (8 items) Research BRAIN Initiative (5 ... Health (2 items) Military Service Members (1 item) Prevention Suicide Prevention (8 items) Research BRAIN Initiative (5 ...

  13. Concussion and Traumatic Brain Injury

    Science.gov (United States)

    ... turn JavaScript on. Feature: Concussion Concussion and Traumatic Brain Injury Past Issues / Summer 2015 Table of Contents Children ... body, may have a concussion or more serious brain injury. Concussion Signs Observed Can't recall events prior ...

  14. Development of the Young Brain

    Medline Plus

    Full Text Available ... Institute Announcements (24 items) Development of the Young Brain May 2, 2011 For more than twenty years, ... Giedd has studied the development of the adolescent brain. Decades of imaging work have led to remarkable ...

  15. Development of the Young Brain

    Medline Plus

    Full Text Available ... 3 items) Institute Announcements (24 items) Development of the Young Brain May 2, 2011 For more than ... Adolescents Brain Anatomy and Physiology Institute Announcements Contact the Press Office 301-443-4536 NIMHpress@nih.gov ...

  16. Brain imaging and autism

    Energy Technology Data Exchange (ETDEWEB)

    Zilbovicius, M. [Service Hospitalier Frederic Joliot (CEA/DSV/DRM), INSERM CEA 0205, 91 - Orsay (France)

    2006-07-01

    Autism is a neuro-developmental disorder with a range of clinical presentations, from mild to severe, referred to as autism spectrum disorders (ASD). The most common clinical ASD sign is social interaction impairment, which is associated with verbal and non-verbal communication deficits and stereotyped and obsessive behaviors. Thanks to recent brain imaging studies, scientists are getting a better idea of the neural circuits involved in ASD. Indeed, functional brain imaging, such as positron emission tomography (PET), single positron emission tomograph y (SPECT) and functional MRI (fMRI) have opened a new perspective to study normal and pathological brain functions. Three independent studies have found anatomical and rest functional temporal abnormalities. These anomalies are localized in the superior temporal sulcus bilaterally which are critical for perception of key social stimuli. In addition, functional studies have shown hypo-activation of most areas implicated in social perception (face and voice perception) and social cognition (theory of mind). These data suggest an abnormal functioning of the social brain network. The understanding of such crucial abnormal mechanism may drive the elaboration of new and more adequate social re-educative strategies in autism. (author)

  17. Thinking about the brain

    CERN Document Server

    Bialek, W

    2002-01-01

    We all are fascinated by the phenomena of intelligent behavior, as generated both by our own brains and by the brains of other animals. As physicists we would like to understand if there are some general principles that govern the structure and dynamics of the neural circuits that underlie these phenomena. At the molecular level there is an extraordinary universality, but these mechanisms are surprisingly complex. This raises the question of how the brain selects from these diverse mechanisms and adapts to compute "the right thing" in each context. One approach is to ask what problems the brain really solves. There are several examples - from the ability of the visual system to count photons on a dark night to our gestalt recognition of statistical tendencies toward symmetry in random patterns - where the performance of the system in fact approaches some fundamental physical or statistical limits. This suggests that some sort of optimization principles may be at work, and there are examples where these princi...

  18. Hypoxia and brain development

    NARCIS (Netherlands)

    Nyakas, Csaba; Buwalda, Bauke; Luiten, P.

    1996-01-01

    Hypoxia threatens brain function during the entire life-span starting from early fetal age up to senescence. This review compares the short-term, long-term and life-spanning effects of fetal chronic hypoxia and neonatal anoxia on several behavioural paradigms including novelty-induced spontaneous an

  19. How Body Affects Brain.

    Science.gov (United States)

    Suzuki, Wendy A

    2016-08-09

    Studies show that physical exercise can affect a range of brain and cognitive functions. However, little is known about the peripheral signals that initiate these central changes. Moon et al. (2016) provide exciting new evidence that a novel myokine, cathepsin B (CTSB), released with exercise is associated with improved memory.

  20. Aging Brain, Aging Mind.

    Science.gov (United States)

    Selkoe, Dennis J.

    1992-01-01

    Discusses the aging process related to physical changes of the human neural structure involved in learning, memory, and reasoning. Presents evidence that indicates such alterations do not necessarily signal the decline in cognitive function. Vignettes provide images of brain structures involved in learning, memory, and reasoning; hippocampal…

  1. Diagnosis of brain death

    Directory of Open Access Journals (Sweden)

    Calixto Machado

    2010-06-01

    Full Text Available Brain death (BD should be understood as the ultimate clinical expression of a brain catastrophe characterized by a complete and irreversible neurological stoppage, recognized by irreversible coma, absent brainstem reflexes, and apnea. The most common pattern is manifested by an elevation of intracranial pressure to a point beyond the mean arterial pressure, and hence cerebral perfusion pressure falls and, as a result, no net cerebral blood flow is present, in due course leading to permanent cytotoxic injury of the intracranial neuronal tissue. A second mechanism is an intrinsic injury affecting the nervous tissue at a cellular level which, if extensive and unremitting, can also lead to BD. We review here the methodology of diagnosing death, based on finding any of the signs of death. The irreversible loss of cardio-circulatory and respiratory functions can cause death only when ischemia and anoxia are prolonged enough to produce an irreversible destruction of the brain. The sign of such loss of brain functions, that is to say BD diagnosis, is fully reviewed.

  2. From Ear to Brain

    Science.gov (United States)

    Kimura, Doreen

    2011-01-01

    In this paper Doreen Kimura gives a personal history of the "right-ear effect" in dichotic listening. The focus is on the early ground-breaking papers, describing how she did the first dichotic listening studies relating the effects to brain asymmetry. The paper also gives a description of the visual half-field technique for lateralized stimulus…

  3. Nourish Your Brain

    Science.gov (United States)

    ... foods may also help protect brain function. The antioxidants in leafy greens, dark-skinned vegetables, and cruciferous ... SoresRead Article >>SeniorsPressure SoresPressure sores occur on your skin and are caused by staying in one position ...

  4. Campaign for the Brain.

    Science.gov (United States)

    Marshall, Jolene

    2017-04-01

    A stroke alert is an emergency. An event in the brain can end in long-term deficits that may be prevented if attention is given to the signs. The message needs to be told. Be fast. This is a poem to promote code stroke.

  5. The Brain's Versatile Toolbox.

    Science.gov (United States)

    Pinker, Steven

    1997-01-01

    Considers the role of evolution and natural selection in the functioning of the modern human brain. Natural selection equipped humans with a mental toolbox of intuitive theories about the world which were used to master rocks, tools, plants, animals, and one another. The same toolbox is used today to master the intellectual challenges of modern…

  6. The cost of brain diseases

    DEFF Research Database (Denmark)

    DiLuca, Monica; Olesen, Jes

    2014-01-01

    Brain diseases represent a considerable social and economic burden in Europe. With yearly costs of about 800 billion euros and an estimated 179 million people afflicted in 2010, brain diseases are an unquestionable emergency and a grand challenge for neuroscientists.......Brain diseases represent a considerable social and economic burden in Europe. With yearly costs of about 800 billion euros and an estimated 179 million people afflicted in 2010, brain diseases are an unquestionable emergency and a grand challenge for neuroscientists....

  7. Brain metastases from colorectal cancer

    DEFF Research Database (Denmark)

    Vagn-Hansen, Chris Aksel; Rafaelsen, Søren Rafael

    2001-01-01

    Brain metastases from colorectal cancer are rare. The prognosis for patients with even a single resectable brain metastasis is poor. A case of surgically treated cerebral metastasis from a rectal carcinoma is reported. The brain tumour was radically resected. However, cerebral, as well...... as extracerebral, disease recurred 12 months after diagnosis. Surgical removal of colorectal metastatic brain lesions in selected cases results in a longer survival time....

  8. Robust brain-computer interfaces

    NARCIS (Netherlands)

    Reuderink, Boris

    2011-01-01

    A brain-computer interface (BCI) enables direct communication from the brain to devices, bypassing the traditional pathway of peripheral nerves and muscles. Current BCIs aimed at patients require that the user invests weeks, or even months, to learn the skill to intentionally modify their brain sign

  9. Brain metastasis from esophageal carcinoma

    Directory of Open Access Journals (Sweden)

    Almasi Saeid

    2004-10-01

    Full Text Available Brain metastasis from esophageal carcinoma is rare. In our center, among 301 cases of esophageal cancer referred for radiotherapy during a 14-year period, brain metastasis from esophageal carcinoma was detected in one case. An unusual case of esophageal carcinoma that presented with brain metastasis is reported.

  10. Brain Dominance & Self-Actualization.

    Science.gov (United States)

    Bernhoft, Franklin O.

    Numerous areas associated with brain dominance have been researched since Bogen and Sperry's work with split-brain patients in the 1960s, but only slight attention has been given to the connection between brain dominance and personality. No study appears in the literature seeking to understand optimal mental health as defined by Maslow's…

  11. Brain Injury Association of America

    Science.gov (United States)

    ... Only) 1-800-444-6443 Welcome to the Brain Injury Association of America (BIAA) Brain injury is not an event or an outcome. ... misunderstood, under-funded neurological disease. People who sustain brain injuries must have timely access to expert trauma ...

  12. Brain MRI in Parkinson's disease

    NARCIS (Netherlands)

    Meijer, F.J.A.; Goraj, B.M.

    2014-01-01

    In this review article, conventional brain MRI and advanced MRI techniques in Parkinson`s disease (PD) are discussed, with emphasis on clinical relevance. Conventional brain MRI sequences generally demonstrate limited abnormalities specific for PD and in clinical practice brain MRI is mainly used to

  13. Brain Temperature: Physiology and Pathophysiology after Brain Injury

    Directory of Open Access Journals (Sweden)

    Ségolène Mrozek

    2012-01-01

    Full Text Available The regulation of brain temperature is largely dependent on the metabolic activity of brain tissue and remains complex. In intensive care clinical practice, the continuous monitoring of core temperature in patients with brain injury is currently highly recommended. After major brain injury, brain temperature is often higher than and can vary independently of systemic temperature. It has been shown that in cases of brain injury, the brain is extremely sensitive and vulnerable to small variations in temperature. The prevention of fever has been proposed as a therapeutic tool to limit neuronal injury. However, temperature control after traumatic brain injury, subarachnoid hemorrhage, or stroke can be challenging. Furthermore, fever may also have beneficial effects, especially in cases involving infections. While therapeutic hypothermia has shown beneficial effects in animal models, its use is still debated in clinical practice. This paper aims to describe the physiology and pathophysiology of changes in brain temperature after brain injury and to study the effects of controlling brain temperature after such injury.

  14. In Search of...Brain-Based Education.

    Science.gov (United States)

    Bruer, John T.

    1999-01-01

    Debunks two ideas appearing in brain-based education articles: the educational significance of brain laterality (right brain versus left brain) and claims for a sensitive period of brain development in young children. Brain-based education literature provides a popular but misleading mix of fact, misinterpretation, and fantasy. (47 references (MLH)

  15. Training brain networks and states.

    Science.gov (United States)

    Tang, Yi-Yuan; Posner, Michael I

    2014-07-01

    Brain training refers to practices that alter the brain in a way that improves cognition, and performance in domains beyond those involved in the training. We argue that brain training includes network training through repetitive practice that exercises specific brain networks and state training, which changes the brain state in a way that influences many networks. This opinion article considers two widely used methods - working memory training (WMT) and meditation training (MT) - to demonstrate the similarities and differences between network and state training. These two forms of training involve different areas of the brain and different forms of generalization. We propose a distinction between network and state training methods to improve understanding of the most effective brain training.

  16. Contextualizing aquired brain damage

    DEFF Research Database (Denmark)

    Nielsen, Charlotte Marie Bisgaard

    Contextualizing aquired brain damage Traditional approaches study ’communicational problems’ often in a discourse of disabledness or deficitness. With an ontology of communcation as something unique and a presupposed uniqueness of each one of us, how could an integrational approach (Integrational...... Linguistics) help facilitate a new methodological perspective on the study of problems in interpersonal communication and could such a research contribute to develop a methodology that studied ”howabledness” (a term borrowed from Pirkko Raudaskoski) rather than disabledness? A study on ”inclusion” at a centre...... for people with aquired brain injuries will be presented and comparatively discussed in a traditional versus an integrational perspective. Preliminary results and considerations on ”methods” and ”participation” from this study will be presented along with an overview of the project's empirical data....

  17. How brains make decisions

    CERN Document Server

    Yukalov, V I

    2014-01-01

    This chapter, dedicated to the memory of Mino Freund, summarizes the Quantum Decision Theory (QDT) that we have developed in a series of publications since 2008. We formulate a general mathematical scheme of how decisions are taken, using the point of view of psychological and cognitive sciences, without touching physiological aspects. The basic principles of how intelligence acts are discussed. The human brain processes involved in decisions are argued to be principally different from straightforward computer operations. The difference lies in the conscious-subconscious duality of the decision making process and the role of emotions that compete with utility optimization. The most general approach for characterizing the process of decision making, taking into account the conscious-subconscious duality, uses the framework of functional analysis in Hilbert spaces, similarly to that used in the quantum theory of measurements. This does not imply that the brain is a quantum system, but just allows for the simple...

  18. Spectromicroscopy of Brain Tissue

    Science.gov (United States)

    Frazer, Bradley; Cannara, Rachel; Gilbert, Benjamin; Destasio, Gelsomina; Ogg, Mandy; Gough, Kathy

    2001-03-01

    X-ray PhotoElectron Emission Microscopy (X-PEEM) was originally developed for studying the surface microchemistry of materials science specimens. It has then evolved into a valuable tool to investigate the magnetic properties of materials and the microchemistry of cells and tissues. We used the MEPHISTO X-PEEM instrument, installed at the UW-Synchrotron Radiation Center to detect trace concentrations of non-physiological elements in senile brain tissue specimens. These tissues contain a large number of plaques, in which all the compounds and elements that the brain does not need are disposed and stored. We hypothesized that plaques should contain elements, such as Si, B, and Al which are very abundant on the Earth crust but absent from healthy tissues. We verified this hypothesis with MEPHISTO and found evidence of Si and B, and suspect Al. We also found a higher than normal concentration of Fe.

  19. MRI brain imaging.

    Science.gov (United States)

    Skinner, Sarah

    2013-11-01

    General practitioners (GPs) are expected to be allowed to request MRI scans for adults for selected clinically appropriate indications from November 2013 as part of the expansion of Medicare-funded MRI services announced by the Federal Government in 2011. This article aims to give a brief overview of MRI brain imaging relevant to GPs, which will facilitate explanation of scan findings and management planning with their patients. Basic imaging techniques, common findings and terminology are presented using some illustrative case examples.

  20. Operation Brain Trauma Therapy

    Science.gov (United States)

    2013-10-01

    investigators. This included resveratrol , N-acetylcysteine, necrostatin, INO-1001, glibenclamide, AER 271, edaravone, melatonin, fluoxetine, amphetamine...significantly ameliorates cortical damage following traumatic brain injury. Exp Neurol. 2000;161:631-637. 34. Sullivan PG, Rabchevsky AG , Hicks RR, et al...Berges L. Dependency of cyclosporine tissue distribution and metabolism on the age and gender of rats after a single intravenous dose. Internat J

  1. Controllability of Brain Networks

    OpenAIRE

    Gu, Shi; Pasqualetti, Fabio; Cieslak, Matthew; Grafton, Scott T.; Bassett, Danielle S.

    2014-01-01

    Cognitive function is driven by dynamic interactions between large-scale neural circuits or networks, enabling behavior. Fundamental principles constraining these dynamic network processes have remained elusive. Here we use network control theory to offer a mechanistic explanation for how the brain moves between cognitive states drawn from the network organization of white matter microstructure. Our results suggest that densely connected areas, particularly in the default mode system, facilit...

  2. The diagnosis of brain death

    Directory of Open Access Journals (Sweden)

    Goila Ajay

    2009-01-01

    Full Text Available Physicians, health care workers, members of the clergy, and laypeople throughout the world have accepted fully that a person is dead when his or her brain is dead. Although the widespread use of mechanical ventilators and other advanced critical care services have transformed the course of terminal neurologic disorders. Vital functions can now be maintained artificially for a long period of time after the brain has ceased to function. There is a need to diagnose brain death with utmost accuracy and urgency because of an increased awareness amongst the masses for an early diagnosis of brain death and the requirements of organ retrieval for transplantation. Physicians need not be, or consult with, a neurologist or neurosurgeon in order to determine brain death. The purpose of this review article is to provide health care providers in India with requirements for determining brain death, increase knowledge amongst health care practitioners about the clinical evaluation of brain death, and reduce the potential for variations in brain death determination policies and practices amongst facilities and practitioners. Process for brain death certification has been discussed under the following: 1. Identification of history or physical examination findings that provide a clear etiology of brain dysfunction. 2. Exclusion of any condition that might confound the subsequent examination of cortical or brain stem function. 3. Performance of a complete neurological examination including the standard apnea test and 10 minute apnea test. 4. Assessment of brainstem reflexes. 5. Clinical observations compatible with the diagnosis of brain death. 6. Responsibilities of physicians. 7. Notify next of kin. 8. Interval observation period. 9. Repeat clinical assessment of brain stem reflexes. 10. Confirmatory testing as indicated. 11. Certification and brain death documentation.

  3. The Albanian Brain Drain phenomena and the Brain Gain strategy

    Directory of Open Access Journals (Sweden)

    Arta Musaraj

    2011-06-01

    Full Text Available Qualitative human resources remain one of the main problem of Eastern Europe and in particular Western Balkan countries. After 20 years of deep economic, political and social transformation, those countries are facing the problem of the highly qualified human resources they lost in these two decades, while in most of cases there is no a real measurement of the weight and impact these phenomena of Brain Drain has in the quality of the work force. Most of them are trying to set up and apply Brain Gain strategies at a national level. The paper aims to analyze and evaluate the influence that the missing of a previous qualitative and quantitative evaluation of the Phenomena of Brain Drain in Albania, has in the successful application of the Brain Gain strategy. The research objective will be fulfilled by analyzing the evolution of the Brain Drain phenomena, by an introduction of the Albanian characteristic and shape of  Brain Drain from 1990, by analyzing the Brain Gain strategy applied in the country comparing it to a successful application. The paper analyzes factors and variables which may affect the successful application of Brain Gain in Albania while  evidences the importance of stakeholder approach in objectives and aims of Brain Gain program and strategy and the use of the  Balance Scorecard as a strategic management system in “brain gain” strategy set up and application in the case of Albania and those of other countries of the region as well.

  4. The domesticated brain: genetics of brain mass and brain structure in an avian species

    Science.gov (United States)

    Henriksen, R.; Johnsson, M.; Andersson, L.; Jensen, P.; Wright, D.

    2016-01-01

    As brain size usually increases with body size it has been assumed that the two are tightly constrained and evolutionary studies have therefore often been based on relative brain size (i.e. brain size proportional to body size) rather than absolute brain size. The process of domestication offers an excellent opportunity to disentangle the linkage between body and brain mass due to the extreme selection for increased body mass that has occurred. By breeding an intercross between domestic chicken and their wild progenitor, we address this relationship by simultaneously mapping the genes that control inter-population variation in brain mass and body mass. Loci controlling variation in brain mass and body mass have separate genetic architectures and are therefore not directly constrained. Genetic mapping of brain regions indicates that domestication has led to a larger body mass and to a lesser extent a larger absolute brain mass in chickens, mainly due to enlargement of the cerebellum. Domestication has traditionally been linked to brain mass regression, based on measurements of relative brain mass, which confounds the large body mass augmentation due to domestication. Our results refute this concept in the chicken. PMID:27687864

  5. Asymptomatic brain tumor detected at brain check-up

    Energy Technology Data Exchange (ETDEWEB)

    Onizuka, Masanari; Suyama, Kazuhiko; Shibayama, Akira; Hiura, Tsuyoshi; Horie, Nobutaka; Miyazaki, Hisaya [Sankoukai Miyazaki Hospital, Isahaya, Nagasaki (Japan)

    2001-09-01

    Brain check-up was performed in 4000 healthy subjects who underwent medical and radiological examinations for possible brain diseases in our hospital from April 1996 to March 2000. Magnetic resonance imaging revealed 11 brain tumors which consisted of six meningiomas, three pituitary adenomas, one astrocytoma, and one epidermoid cyst. The detection rate of incidental brain tumor in our hospital was 0.3%. Nine patients underwent surgery, with one case of morbidity due to postoperative transient oculomotor nerve paresis. The widespread use of brain check-up may increasingly detect asymptomatic brain tumors. Surgical indications for such lesions remain unclear, and the strategy for treatment should be determined with consideration of the patient's wishes. (author)

  6. Effect of AVP on brain edema following traumatic brain injury

    Institute of Scientific and Technical Information of China (English)

    XU Miao; SU Wei; HUANG Wei-dong; LU Yuan-qiang; XU Qiu-ping; CHEN Zhao-jun

    2007-01-01

    Objective: To evaluate plasma arginine vasopressin (AVP) level in patients with traumatic brain injury and investigate the role of AVP in the process of brain edema. Methods: A total of 30 patients with traumatic brain injury were involved in our study. They were divided into two groups by Glasgow Coma Scale: severe traumatic brain injury group (STBI, GCS≤ 8) and moderate traumatic brain injury group (MTBI, GCS>8).Samples of venous blood were collected in the morning at rest from 15 healthy volunteers (control group)and within 24 h after traumatic brain injury from these patients for AVP determinations by radioimmunoassay. The severity and duration of the brain edema were estimated by head CT scan.Results: plasma AVP levels (ng/L) were (mean±SD): control, 3.06±1.49; MTBI, 38.12±7.25; and STBI, 66.61±17.10.The plasma level of AVP was significantly increased within 24 h after traumatic brain injury and followed by the reduction of GCS, suggesting the deterioration of cerebral injury (P<0.01). And the AVP level was correlated with the severity (STBI r=0.919, P<0.01; MTBI r=0.724, P<0.01) and the duration of brain edema (STBI r=0.790, P<0.01; MTBI r=0.712, P<0.01). Conclusions: The plasma AVP level is closely associated with the severity of traumatic brain injury. AVP may play an important role in pathogenesis of brain edema after traumatic brain injury.

  7. Consistent 4D Brain Extraction of Serial Brain MR Images

    OpenAIRE

    Wang, Yaping; Li, Gang; Nie, Jingxin; Yap, Pew-Thian; Guo, Lei; Shen, Dinggang

    2013-01-01

    Accurate and consistent skull stripping of serial brain MR images is of great importance in longitudinal studies that aim to detect subtle brain morphological changes. To avoid inconsistency and the potential bias introduced by independently performing skull-stripping for each time-point image, we propose an effective method that is capable of skull-stripping serial brain MR images simultaneously. Specifically, all serial images of the same subject are first affine aligned in a groupwise mann...

  8. Brain and learning in adolescence

    DEFF Research Database (Denmark)

    Gerlach, Christian; Evans, Karen

    2007-01-01

    The brain consists of a vast amount of cells, or neurons, which constitute the basic operative unit in the brain. During the period of the highest prenatal brain development (10 - 26 weeks after conception), it is estimated that the brain grows at a rate of 250,000 neurons per minute. At birth...... the brain contains the majority of the cells it will ever have with estimates ranging from 15 - 32 billions. This span does not only reflect that cell counting is imprecise but also that the number of cells varies considerably from person to person. After birth new neurons are only produced in limited...... numbers. The by far most conspicuous changes in the brain following birth occur in the connections between neurons; new ones are formed and old ones are either strengthened or eliminated. And there is plenty of room for change given that any particular neuron is often connected with several thousand other...

  9. Cognition and brain functional aging

    Directory of Open Access Journals (Sweden)

    Hui-jie LI

    2014-03-01

    Full Text Available China has the largest population of elderly adults. Meanwhile, it is one of the countries showing fastest aging speed in the world. Aging processing is always companied with a series of brain structural and functional changes, which result in the decline of processing speed, working memory, long-term memory and executive function, etc. The studies based on functional magnetic resonance imaging (fMRI found certain aging effects on brain function activation, spontaneous activity and functional connectivity in old people. However, few studies have explored the brain functional curve during the aging process while most previous studies explored the differences in the brain function between young people and old people. Delineation of the human brain functional aging curve will promote the understanding of brain aging mechanisms and support the normal aging monitoring and early detection of abnormal aging changes. doi: 10.3969/j.issn.1672-6731.2014.03.005

  10. Brain tumors in infants

    Directory of Open Access Journals (Sweden)

    Seyyed Mohammad Ghodsi

    2015-01-01

    Full Text Available Background: Brain tumors in infants have different clinical presentations, anatomical distribution, histopathological diagnosis, and clinical prognosis compared with older children. Materials and Methods: A retrospective analysis was done in patients <12 months old who were operated on for primary brain tumor in Children's Hospital Medical Center since 2008 to 2014. Results: Thirty-one infants, 20 males and 11 females, with the mean age of 7.13 months (0.5–12 were enrolled. There were 16 supratentorial and 15 infratentorial tumors. The presenting symptoms included increased head circumference (16; bulge fontanel (15; vomiting (15; developmental regression (11; sunset eye (7; seizure (4; loss of consciousness (4; irritability (3; nystagmus (2; visual loss (2; hemiparesis (2; torticollis (2; VI palsy (3; VII, IX, X nerve palsy (each 2; and ptosis (1. Gross total and subtotal resection were performed in 19 and 11 cases, respectively. Fourteen patients needed external ventricular drainage in the perioperative period, from whom four infants required a ventriculoperitoneal shunt. One patient underwent ventriculoperitoneal shunting without tumor resection. The most common histological diagnoses were primitive neuroectodermal tumor (7, followed by anaplastic ependymoma (6 and grade II ependymoma. The rate of 30-day mortality was 19.3%. Eighteen patients are now well-controlled with or without adjuvant therapy (overall survival; 58%, from whom 13 cases are tumor free (disease free survival; 41.9%, 3 cases have residual masses with fixed or decreased size (progression-free survival; 9.6%, and 2 cases are still on chemotherapy. Conclusion: Brain tumors in infants should be treated with surgical resection, followed by chemotherapy when necessary.

  11. Evaluation in the Teaching Practicum of the English Program at the Universidad de la Amazonía La evaluación en la práctica docente del Programa de Licenciatura en Inglés de la Universidad de la Amazonía

    Directory of Open Access Journals (Sweden)

    Claudia Rodríguez Ferreira

    2009-04-01

    Full Text Available The following article summarizes the research study which sought to examine the process of evaluation in the teaching practicum of the undergraduate program in English language teaching at Universidad de la Amazonía , in Florencia, Caquetá , Colombia . The purpose of this project was to establish which evaluation paradigm promotes the professional development of the student teacher whilst inside the actual conditions of her/his work. The research process was based on participant, non- participant observations and interviews with a group of 17 student teachers and their counsellor. The results showed some features of the critical paradigm of evaluation that contributed to the professional development of the subjects involved in the practicum (student teachers and counsellor. It was also found that it is very important to encourage the formation of critical and progressive professionals .El siguiente artículo resume la investigación que buscó examinar el proceso de evaluación en las prácticas de formación profesional docente en el programa de Licenciatura en Inglés de la Universidad de la Amazonía , en Florencia (Caquetá - Colombia. El propósito de este proyecto fue establecer qué paradigma de evaluación promueve el desarrollo profesional del maestro en formación en medio de las condiciones en las cuales desarrolla su labor. El proceso de investigación se basó en las observaciones participantes y no participantes, y en una entrevista a profundidad con un grupo de 17 maestros en formación y su consejero. Los resultados mostraron algunas características del paradigma crítico de evaluación que contribuyeron al desarrollo profesional de los sujetos involucrados en la práctica (maestros en formación y consejero. También se encontró que es muy importante promover la formación de profesionales críticos y progresivos .

  12. Analysis of and countermeasures for stressors among nursing students in different periods of clinical practicum in hepatobiliary specialized hospital%肝胆专科医院护生不同实习阶段压力源的分析与对策

    Institute of Scientific and Technical Information of China (English)

    常艳琴; 王志红; 刘栋梅; 杨远

    2013-01-01

    目的:探索肝胆专科医院护生在不同实习阶段压力、压力源及对策.方法:采用自行设计的压力源量表,对2011年5月至2012年3月在我院实习的68名护生进行问卷调查.结果:肝胆专科医院护生实习早期排在首位的压力源为时间分配及工作量,实习中、后期则为病人护理;护生的压力在三个阶段均处于中度水平.结论:在实习早期,通过向护生传授时间管理方法,使带教计划透明化,缓解护生在时间及工作量分配方面压力;实习中、后期则可通过开展人文和心理教育、“一对一导师制”带教,缓解护生在病人护理方面压力.%Objective: To investigate the stressors and stress levels among nursing students in different periods of clinical practicum in hepatobiliary specialized hospital. Methods: From May, 2011 to March, 2012, 68 nursing students in Eastern Hepatobiliary Surgery Hospital were investigated by a self-developed questionnaire and stressor scale. Results: In the early stage, workload and time allocation were the primary stressors. However, in the middle and the late stage, the primary stressors for nursing students were both about patient care. The stress levels of nursing students were moderate in all the three practicum stages. Conclusion: In the early stage, nursing students should learn methods for time allocation with a clear teaching plan. For stressors about patient care, humanities and psychology education are needed.

  13. Brain-computer interface

    DEFF Research Database (Denmark)

    2014-01-01

    A computer-implemented method of providing an interface between a user and a processing unit, the method comprising : presenting one or more stimuli to a user, each stimulus varying at a respective stimulation frequency, each stimulation frequency being associated with a respective user......-selectable input; receiving at least one signal indicative of brain activity of the user; and determining, from the received signal, which of the one or more stimuli the user attends to and selecting the user-selectable input associated with the stimulation frequency of the determined stimuli as being a user...

  14. Operation Brain Trauma Therapy

    Science.gov (United States)

    2012-10-01

    kg rH  Male Wistar rat  Hemodilution did not  Hemodilution did  HCT to 60 in  2008 (Chopp  group)  IP d1,  d2  and  d3 ; +/‐  isovolemic  hemodilution...Nicotinamide Vitamin B3 has shown dramatic beneficial effects on all aspects of outcome evaluated including function, neuropathology, and blood-brain...with a promising 4 h time window (1). Nicotinamide is commercially available as vitamin B3. It represents an example of an agent that could be readily

  15. Gut Microbiota-brain Axis

    Science.gov (United States)

    Wang, Hong-Xing; Wang, Yu-Ping

    2016-01-01

    Objective: To systematically review the updated information about the gut microbiota-brain axis. Data Sources: All articles about gut microbiota-brain axis published up to July 18, 2016, were identified through a literature search on PubMed, ScienceDirect, and Web of Science, with the keywords of “gut microbiota”, “gut-brain axis”, and “neuroscience”. Study Selection: All relevant articles on gut microbiota and gut-brain axis were included and carefully reviewed, with no limitation of study design. Results: It is well-recognized that gut microbiota affects the brain's physiological, behavioral, and cognitive functions although its precise mechanism has not yet been fully understood. Gut microbiota-brain axis may include gut microbiota and their metabolic products, enteric nervous system, sympathetic and parasympathetic branches within the autonomic nervous system, neural-immune system, neuroendocrine system, and central nervous system. Moreover, there may be five communication routes between gut microbiota and brain, including the gut-brain's neural network, neuroendocrine-hypothalamic-pituitary-adrenal axis, gut immune system, some neurotransmitters and neural regulators synthesized by gut bacteria, and barrier paths including intestinal mucosal barrier and blood-brain barrier. The microbiome is used to define the composition and functional characteristics of gut microbiota, and metagenomics is an appropriate technique to characterize gut microbiota. Conclusions: Gut microbiota-brain axis refers to a bidirectional information network between the gut microbiota and the brain, which may provide a new way to protect the brain in the near future. PMID:27647198

  16. Gut microbiota: the brain peacekeeper

    OpenAIRE

    2016-01-01

    Gut microbiota regulates intestinal and extraintestinal homeostasis. Accumulating evidence suggests that the gut microbiota may also regulate brain function and behavior. Results from animal models indicate that disturbances in the composition and functionality of some microbiota members are associated with neurophysiological disorders, strengthening the idea of a microbiota-gut-brain axis and the role of microbiota as a peacekeeper in the brain health. Here, we review recent discoveries on t...

  17. Gut Microbiota-brain Axis

    Institute of Scientific and Technical Information of China (English)

    Hong-Xing Wang; Yu-Ping Wang

    2016-01-01

    Objective:To systematically review the updated information about the gut microbiota-brain axis.Data Sources:All articles about gut microbiota-brain axis published up to July 18,2016,were identified through a literature search on PubMed,ScienceDirect,and Web of Science,with the keywords of"gut microbiota","gut-brain axis",and "neuroscience".Study Selection:All relevant articles on gut microbiota and gut-brain axis were included and carefully reviewed,with no limitation of study design.Results:It is well-recognized that gut microbiota affects the brain's physiological,behavioral,and cognitive functions although its precise mechanism has not yet been fully understood.Gut microbiota-brain axis may include gut microbiota and their metabolic products,enteric nervous system,sympathetic and parasympathetic branches within the autonomic nervous system,neural-immune system,neuroendocrine system,and central nervous system.Moreover,there may be five communication routes between gut microbiota and brain,including the gut-brain's neural network,neuroendocrine-hypothalamic-pituitary-adrenal axis,gut immune system,some neurotransmitters and neural regulators synthesized by gut bacteria,and barrier paths including intestinal mucosal barrier and blood-brain barrier.The microbiome is used to define the composition and functional characteristics of gut microbiota,and metagenomics is an appropriate technique to characterize gut microbiota.Conclusions:Gut microbiota-brain axis refers to a bidirectional information network between the gut microbiota and the brain,which may provide a new way to protect the brain in the near future.

  18. Chernobyl birds have smaller brains.

    Directory of Open Access Journals (Sweden)

    Anders Pape Møller

    Full Text Available BACKGROUND: Animals living in areas contaminated by radioactive material from Chernobyl suffer from increased oxidative stress and low levels of antioxidants. Therefore, normal development of the nervous system is jeopardized as reflected by high frequencies of developmental errors, reduced brain size and impaired cognitive abilities in humans. Alternatively, associations between psychological effects and radiation have been attributed to post-traumatic stress in humans. METHODOLOGY/PRINCIPAL FINDING: Here we used an extensive sample of 550 birds belonging to 48 species to test the prediction that even in the absence of post-traumatic stress, there is a negative association between relative brain size and level of background radiation. We found a negative association between brain size as reflected by external head volume and level of background radiation, independent of structural body size and body mass. The observed reduction in brain size in relation to background radiation amounted to 5% across the range of almost a factor 5,000 in radiation level. Species differed significantly in reduction in brain size with increasing background radiation, and brain size was the only morphological character that showed a negative relationship with radiation. Brain size was significantly smaller in yearlings than in older individuals. CONCLUSIONS/SIGNIFICANCE: Low dose radiation can have significant effects on normal brain development as reflected by brain size and therefore potentially cognitive ability. The fact that brain size was smaller in yearlings than in older individuals implies that there was significant directional selection on brain size with individuals with larger brains experiencing a viability advantage.

  19. Brain and Behavior: a Review

    Directory of Open Access Journals (Sweden)

    Rivera Urbina, Guadalupe N.

    2012-08-01

    Full Text Available The contribution of many scientific disciplines allows us to know surprising aspects of the relationship between the brain and its functions. Current technology and the convergence of these disciplines are essential to understand the complex brain mechanisms underlying behavior. In this paper will be described some scientific disciplines whose studies help to understand the biological substrates of normal and altered behavior. We will describe some pathologies or neuropsychological disorders and, in addition, we will review some of the known neurobiological mechanisms that control our brain functions. This allows us to conclude that the behavior and brain functions depend on complex biological mechanisms, many of which are still to be elucidated.

  20. Epidemiological features of brain tumors

    Directory of Open Access Journals (Sweden)

    Živković Nenad

    2013-01-01

    Full Text Available Brain tumors account for 1.4% of all cancers and 2.4% of all cancer-related deaths. The incidence of brain tumors varies and it is higher in developed countries of Western Europe, North America, Australia and New Zealand. In Serbia, according to data from 2009, malignant brain tumors account for 2. 2 of all tumors, and from all cancer­related deaths, 3.2% is caused by malignant brain tumors. According to recent statistical reports, an overall incidence of brain tumors for benign and malignant tumors combined is 18.71 per 100,000 persons/year. The most common benign brain tumor in adults is meningioma, which is most present in women, and the most common malignant tumor is glioblastoma, which is most present in adult men. Due to high mortality, especially in patients diagnosed with glioblastoma and significant brain tumor morbidity, there is a constant interest in understanding its etiology in order to possibly prevent tumor occurrence in future and enable more efficient treatment strategies for this fatal brain disease. Despite the continuously growing number of epidemiological studies on possible factors of tumor incidence, the etiology remains unclear. The only established environmental risk factor of gliomas is ionizing radiation exposure. Exposure to radiofrequency electromagnetic fields via cell phone use has gained a lot of attention as a potential risk factor of brain tumor development. However, studies have been inconsistent and inconclusive, so more definite results are still expected.

  1. Brain death: the European perspective.

    Science.gov (United States)

    Citerio, Giuseppe; Murphy, Paul G

    2015-04-01

    Some of the seminal steps toward the recognition and definition of brain death were European. There is a general consensus on both the medical concept of brain death in Europe as well as the minimum fundamental clinical standards that are required for its diagnosis-the absence of consciousness, brainstem reflexes, and the ability to breathe in the absence of reversible or confounding conditions. Two aspects of brain death determination are addressed in this article. The authors analyze how brain death is diagnosed across Europe, identifying both the similarities and differences that exist between countries (the latter mainly concerning ancillary tests, timing, and the number of physicians involved in the brain death determination). In addition, they describe the very considerable variations in when brain death determinations are made between and within individual European countries, and propose that they are due to differences in the end-of-life care practices in patients with irreversible brain injuries, medical attitudes, and organ donation practices. Although legislation is available to standardize the brain death diagnosis process in most individual European countries, there are still disparities across Europe as a whole. The current variation in practice makes a continental consensus for the definition of brain death imperative.

  2. Gut Microbiota-brain Axis

    OpenAIRE

    2016-01-01

    Objective: To systematically review the updated information about the gut microbiota-brain axis. Data Sources: All articles about gut microbiota-brain axis published up to July 18, 2016, were identified through a literature search on PubMed, ScienceDirect, and Web of Science, with the keywords of “gut microbiota”, “gut-brain axis”, and “neuroscience”. Study Selection: All relevant articles on gut microbiota and gut-brain axis were included and carefully reviewed, with no limitation of s...

  3. The Leadership Brain for Dummies

    CERN Document Server

    Sprenger, Marilee B

    2010-01-01

    Discover how scientific knowledge of the brain can make you a better leader. Based upon the latest breakthroughs in neuroscience and advances in brain-based education, Leadership Brain For Dummies gives you the edge to influence, lead, and transform any team or organization. Drawing concrete connections between the growing scientific knowledge of the brain and leadership, this book gives you the skills to assess your strengths and weaknesses as a leader, adopt a style of leadership that suits your characteristics, determine the learning styles of individual employees, and conduct training sess

  4. Normal language in abnormal brains.

    Science.gov (United States)

    Piattelli-Palmarini, Massimo

    2017-02-27

    There is little doubt that, in the adult, specific brain lesions cause specific language deficits. Yet, brain localizations of linguistic functions are made problematic by several reported cases of normal language in spite of major brain anomalies, mostly, but not exclusively, occurring early in life. The signal cases are hydrocephaly, spina bifida and hemispherectomy. These cases are discussed and possible solutions are suggested: namely a vast redundancy of neurons and/or the role of microtubules as neuron-internal processors and key factors in signaling and guiding the growth and reconfiguration of the brain.

  5. Radio-induced brain lesions

    Directory of Open Access Journals (Sweden)

    Gorgan Mircea Radu

    2014-03-01

    Full Text Available Introduction : Radiotherapy, an important tool in multimodal oncologic treatment, can cause radio-induced brain lesion development after a long period of time following irradiation.

  6. NANOROBOTS IN BRAIN TUMOR

    Directory of Open Access Journals (Sweden)

    Sayyed Tarannum, Garje Dattatray H

    2011-02-01

    Full Text Available Nanomedicine is the process of diagnosing, treating, and preventing disease and traumatic injury, of relieving pain, and of preserving and improving human health, using molecular tools and molecular knowledge of the human body. In the relatively near term, nanomedicine can address many important medical problems by using nanoscale-structured materials and simple nanodevices that can be manufactured today, including the interaction of nanostructured materials with biological systems. The authors predict that technology-assisted medicine and robotics in particular, will have a significant impact over the next few decades. Robots will augment the surgeon’s motor performance, diagnosis capability, and senses with haptics (feel, augmented reality (sight, and ultrasound (sound. Robotic devices have been used in cardiac surgery, urology, fetal surgery, pediatrics, neurosurgery, orthopedics, and many other medical disciplines. In this article, we present the Nanorobot drug delivery to brain tumor, paying special attention to the transformation trends of organizations, and the integration of robots in brain tumor and underscoring potential repercussions which may deserve more attention and further research.

  7. Brain Injury: A Manual For Educators.

    Science.gov (United States)

    Connor, Karen; Dettmer, Judy; Dise-lewis, Jeanne E.; Murphy, Mary; Santistevan, Barbette; Seckinger, Barbara

    This manual provides Colorado educators with guidelines for serving students with brain injuries. Following an introductory chapter, chapter 2 provides basic information on the brain including definitions of brain injury and its severity, incidence of brain injury, and characteristics of students with brain injury. Chapter 3 considers…

  8. Playing with your Brain: Brain-Computer Interfaces and Games

    NARCIS (Netherlands)

    Nijholt, Anton; Tan, Desney; Bernhaupt, R.; Tscheligi, M.

    2007-01-01

    In this workshop we investigate a possible role of brain-computer interaction in computer games and entertainment computing. The assumption is that brain activity, whether it is consciously controlled and directed by the user or just recorded in order to obtain information about the user’s affective

  9. Competing and collaborating brains: multi-brain computer interfacing

    NARCIS (Netherlands)

    Nijholt, Anton; Hassanieu, Aboul Ella; Azar, Ahmad Taher

    2015-01-01

    In this chapter we survey the possibilities of brain-computer interface applications that assume two or more users, where at least one of the users’ brain activity is used as input to the application. Such ‘applications’ were already explored by artists who introduced artistic EEG applications in th

  10. Educating the Human Brain. Human Brain Development Series

    Science.gov (United States)

    Posner, Michael I.; Rothbart, Mary K.

    2006-01-01

    "Educating the Human Brain" is the product of a quarter century of research. This book provides an empirical account of the early development of attention and self regulation in infants and young children. It examines the brain areas involved in regulatory networks, their connectivity, and how their development is influenced by genes and…

  11. Resting state brain activity and functional brain mapping

    Institute of Scientific and Technical Information of China (English)

    Zhao Xiaohu; Wang Peijun; Tang Xiaowei

    2007-01-01

    Functional brain imaging studies commonly use either resting or passive task states as their control conditions, and typically identify the activation brain region associated with a specific task by subtracting the resting from the active task conditions. Numerous studies now suggest, however, that the resting state may not reflect true mental "rest" conditions. The mental activity that occurs during"rest" might therefore greatly influence the functional neuroimaging observations that are collected through the usual subtracting analysis strategies. Exploring the ongoing mental processes that occur during resting conditions is thus of particular importance for deciphering functional brain mapping results and obtaining a more comprehensive understanding of human brain functions. In this review article, we will mainly focus on the discussion of the current research background of functional brain mapping at resting state and the physiological significance of the available neuroimaging data.

  12. Brains studying brains: look before you think in vision

    Science.gov (United States)

    Zhaoping, Li

    2016-06-01

    Using our own brains to study our brains is extraordinary. For example, in vision this makes us naturally blind to our own blindness, since our impression of seeing our world clearly is consistent with our ignorance of what we do not see. Our brain employs its ‘conscious’ part to reason and make logical deductions using familiar rules and past experience. However, human vision employs many ‘subconscious’ brain parts that follow rules alien to our intuition. Our blindness to our unknown unknowns and our presumptive intuitions easily lead us astray in asking and formulating theoretical questions, as witnessed in many unexpected and counter-intuitive difficulties and failures encountered by generations of scientists. We should therefore pay a more than usual amount of attention and respect to experimental data when studying our brain. I show that this can be productive by reviewing two vision theories that have provided testable predictions and surprising insights.

  13. New Advances in Brain Research.

    Science.gov (United States)

    Seita, Lori Perkins

    2002-01-01

    Recent findings in brain research suggest the implementation of contemporary instructional practices is in order for base practices. Incorporating best practice research is critical for students to be competitive in a global market. This article provides a brief overview of educational philosophy, recent findings on brain research and language…

  14. Maximizing Teaching through Brain Research

    Science.gov (United States)

    Pattridge, Gregory C.

    2009-01-01

    Teachers and parents who read about the brain on the Internet should do so critically to determine fact from opinion. Are the assertions real about certain methods/strategies that claim to be based on brain research? Will they make a difference in their teaching and in achievement levels? Turning theory into fact take time and replication of solid…

  15. Aging, Brain Size, and IQ.

    Science.gov (United States)

    Bigler, Erin D.; And Others

    1995-01-01

    Whether cross-sectional rates of decline for brain volume and the Performance Intellectual Quotient of the Wechsler Adult Intelligence Scale-Revised were equivalent over the years 16 to 65 was studied with 196 volunteers. Results indicate remarkably similar rates of decline in perceptual-motor functions and aging brain volume loss. (SLD)

  16. Traumatic Brain Injury Inpatient Rehabilitation

    Science.gov (United States)

    Im, Brian; Schrer, Marcia J.; Gaeta, Raphael; Elias, Eileen

    2010-01-01

    Traumatic brain injuries (TBI) can cause multiple medical and functional problems. As the brain is involved in regulating nearly every bodily function, a TBI can affect any part of the body and aspect of cognitive, behavioral, and physical functioning. However, TBI affects each individual differently. Optimal management requires understanding the…

  17. Acute brain hemorrhage in dengue

    Institute of Scientific and Technical Information of China (English)

    Somsri Wiwanitkit; Viroj Wiwanitkit

    2014-01-01

    Dengue is a tropical arboviral infection that can have severe hemorrhagic complication.Acute brain hemorrhage in dengue is rare and is a big challenge in neurosurgery.To perform surgery for management of acute brain hemorrhage in dengue is a controversial issue.Here, the authors try to summarize the previous reports on this topic and compare neurosurgery versus conservative management.

  18. Tumor Microenvironment in the Brain

    Energy Technology Data Exchange (ETDEWEB)

    Lorger, Mihaela [Leeds Institute of Molecular Medicine, University of Leeds, St. James’s University Hospital, Beckett Street, Leeds, LS9 7TF (United Kingdom)

    2012-02-22

    In addition to malignant cancer cells, tumors contain a variety of different stromal cells that constitute the tumor microenvironment. Some of these cell types provide crucial support for tumor growth, while others have been suggested to actually inhibit tumor progression. The composition of tumor microenvironment varies depending on the tumor site. The brain in particular consists of numerous specialized cell types such as microglia, astrocytes, and brain endothelial cells. In addition to these brain-resident cells, primary and metastatic brain tumors have also been shown to be infiltrated by different populations of bone marrow-derived cells. The role of different cell types that constitute tumor microenvironment in the progression of brain malignancies is only poorly understood. Tumor microenvironment has been shown to be a promising therapeutic target and diagnostic marker in extracranial malignancies. A better understanding of tumor microenvironment in the brain would therefore be expected to contribute to the development of improved therapies for brain tumors that are urgently required due to a poor availability of treatments for these malignancies. This review summarizes some of the known interactions between brain tumors and different stromal cells, and also discusses potential therapeutic approaches within this context.

  19. Brain Tumor Epidemiology Consortium (BTEC)

    Science.gov (United States)

    The Brain Tumor Epidemiology Consortium is an open scientific forum organized to foster the development of multi-center, international and inter-disciplinary collaborations that will lead to a better understanding of the etiology, outcomes, and prevention of brain tumors.

  20. Notch Signaling and Brain Tumors

    DEFF Research Database (Denmark)

    Stockhausen, Marie; Kristoffersen, Karina; Poulsen, Hans Skovgaard

    2011-01-01

    Human brain tumors are a heterogenous group of neoplasms occurring inside the cranium and the central spinal cord. In adults and children, astrocytic glioma and medulloblastoma are the most common subtypes of primary brain tumors. These tumor types are thought to arise from cells in which Notch...

  1. Adolescent Brain Development and Drugs

    Science.gov (United States)

    Winters, Ken C.; Arria, Amelia

    2011-01-01

    Research now suggests that the human brain is still maturing during adolescence. The developing brain may help explain why adolescents sometimes make decisions that are risky and can lead to safety or health concerns, including unique vulnerabilities to drug abuse. This article explores how this new science may be put to use in our prevention and…

  2. Brain Health Fitness: Beyond Retirement

    Science.gov (United States)

    Anand, Raksha; Chapman, Sandra B.; Rackley, Audette; Zientz, Jennifer

    2011-01-01

    The greatest accomplishment of the 20th century--the doubling of the human lifespan--has brought issues related to brain health to the forefront of public health policy. Given that our bodies are outlasting our minds, maximizing brain health is the scientific cause of this millennium. In this paper, we address three major issues related to…

  3. Language and the Developing Brain.

    Science.gov (United States)

    Eliot, Lise

    2001-01-01

    Discusses the centers of language in the brain and the critical period for language acquisition. Explains developmental milestones of language development--receptive language, babbling, short phrases, full sentences--in the context of brain development. Emphasizes parents' role in language development, including talking to the child, dialogic…

  4. Brain aging and therapeutic interventions

    DEFF Research Database (Denmark)

    This book brings together most up-to-date information on different aspects of brain aging and on the strategies for intervention and therapy of age-related brain disorders. It includes 18 chapters by leading researchers, and each chapter is a comprehensive and critical review of the topic...

  5. Your Brain and Nervous System

    Science.gov (United States)

    ... dientes Video: Getting an X-ray Your Brain & Nervous System KidsHealth > For Kids > Your Brain & Nervous System Print A A A What's in this article? ... the spinal cord and nerves — known as the nervous system — that let messages flow back and forth between ...

  6. PERSONALITY CHANGES IN BRAIN INJURY

    OpenAIRE

    Garcia, Patricia Gracia; Mielke, Michelle M.; Rosenberg, Paul; Bergey, Alyssa; Rao, Vani

    2011-01-01

    Traumatic brain injury (TBI) is frequently complicated by alterations in mood and behaviour and changes in personality. We report mild personality changes post-TBI as a possible indicator of traumatic brain injury, but not of injury severity or psychiatric complications.

  7. Brain Research: Implications for Learning.

    Science.gov (United States)

    Soares, Louise M.; Soares, Anthony T.

    Brain research has illuminated several areas of the learning process: (1) learning as association; (2) learning as reinforcement; (3) learning as perception; (4) learning as imitation; (5) learning as organization; (6) learning as individual style; and (7) learning as brain activity. The classic conditioning model developed by Pavlov advanced…

  8. Development of the Young Brain

    Medline Plus

    Full Text Available ... Services Research (4 items) Genetics (3 items) Brain Anatomy and Physiology (9 items) RDoC (2 items) Research ... Services Research (4 items) Genetics (3 items) Brain Anatomy and Physiology (9 items) RDoC (2 items) Research ...

  9. Development of the Young Brain

    Medline Plus

    Full Text Available ... Services Research (4 items) Genetics (3 items) Brain Anatomy and Physiology (9 items) RDoC (2 items) Research Funding (2 ... Services Research (4 items) Genetics (3 items) Brain Anatomy and Physiology (9 items) RDoC (2 items) Research Funding (2 ...

  10. Development of the Young Brain

    Science.gov (United States)

    ... Services Research (4 items) Genetics (3 items) Brain Anatomy and Physiology (9 items) RDoC (2 items) Research Funding (2 ... Services Research (4 items) Genetics (3 items) Brain Anatomy and Physiology (9 items) RDoC (2 items) Research Funding (2 ...

  11. 实践中学习教学——香港师范生专业实践能力的培养理念评析%Learning to Teach during of Developing Teachers' Professional the Practicum:On the Idea Competence in Practice in Hong Kong

    Institute of Scientific and Technical Information of China (English)

    王夫艳

    2012-01-01

    教育实践是师范生体验教育现实、学习教学的关键路径,拓展了师范生专业学习的空间。香港职前教师教育追求实践的教育价值,将反思作为实践中学习教学的根本理念,创设挑战与支持性的反思环境,通过建构专业自我、研究与试验、专业对话等策略增进师范生的实践体验,提升师范生的专业实践能力。%Practicum, providing more room for professional learning, is critical for student teachers to experience education- al reality and learn to teach. In pursuit of educative practieum, preserviee teacher education in Hong Kong considers reflection as the fundamental idea. In a reflective context with an appropriate mix of challenge and support, it aims to enhance student teach- ers' field experience and develop their professional competence in practice by constructing professional self, research, experi- ment and professional conversation.

  12. Traumatic Brain Injury: Hope Through Research

    Science.gov (United States)

    ... dura. Collectively, these three membranes form the meninges. brain death - an irreversible cessation of measurable brain function. Broca's ... Education Fact Sheets Hope Through Research Know Your Brain Preventing ... and Death of a Neuron Order Publications CONTACT US Contact ...

  13. The Art of Changing the Brain

    Science.gov (United States)

    Zull, James E.

    2004-01-01

    The understanding of fundamental neurological processes that enables the brain to analyze good learning produces physical changes in brain. The use of several regions of brain in the learning process and problem solving techniques are discussed.

  14. Brain death: the Asian perspective.

    Science.gov (United States)

    Chua, Hoe Chin; Kwek, Tong Kiat; Morihara, Hirofumi; Gao, Daiquan

    2015-04-01

    Asia is the largest and most populous continent in the world with people from many diverse ethnic groups, religions and government systems. The authors surveyed 14 countries accounting for the majority of Asia's population and found that, although the concept of brain death is widely accepted, there is wide variability in the criteria for certification. Although most Asian countries have adopted the "whole-brain" concept of brain death, most countries with past colonial links to the United Kingdom follow the UK "brainstem" concept of brain death. Despite this difference, most countries require only neurologic testing of irreversible coma and absent brainstem reflexes as criteria for certification of brain death. Variability exists in the number of personnel required, qualifications of certifying doctors, need for repeat examination, minimum time interval between examinations, and requirement for and choice of confirmatory tests.

  15. Artistic explorations of the brain

    Directory of Open Access Journals (Sweden)

    Eberhard E Fetz

    2012-02-01

    Full Text Available The symbiotic relationships between art and the brain begin with the obvious fact that brain mechanisms underlie the creation and appreciation of art. Conversely, many spectacular images of neural structures have remarkable aesthetic appeal. But beyond its fascinating forms, the many functions performed by brain mechanisms provide a profound subject for aesthetic exploration. Complex interactions in the tangled neural networks in our brain miraculously generate coherent behavior and cognition. Neuroscientists tackle these phenomena with specialized methodologies that limit the scope of exposition and are comprehensible to an initiated minority. Artists can perform an end run around this impasse by representing the brain’s many functions in a manner that can communicate to a wide and receptive audience. This paper explores the ways that brain mechanisms can provide a largely untapped subject for artistic exploration.

  16. Sino-Danish Brain Circulation

    DEFF Research Database (Denmark)

    Bertelsen, Rasmus Gjedssø; Du, Xiangyun; Søndergaard, Morten Karnøe

    2014-01-01

    China is faced with urgent needs to develop an economically and environmentally sustainable economy based on innovation and knowledge. Brain circulation and research and business investments from the outside are central for this development. Sino-American brain circulation and research...... and investment by overseas researchers and entrepreneurs are well described. In that case, the US is the center of global R&D and S&T. However, the brain circulation and research and investments between a small open Scandinavian economy, such as Denmark, and the huge developing economy of China are not well...... understood. In this case, Denmark is very highly developed, but a satellite in the global R&D and S&T system. With time and the growth of China as a R&D and S&T power house, both Denmark and China will benefit from brain circulation between them. Such brain circulation is likely to play a key role in flows...

  17. Optogenetic mapping of brain circuitry

    Science.gov (United States)

    Augustine, George J.; Berglund, Ken; Gill, Harin; Hoffmann, Carolin; Katarya, Malvika; Kim, Jinsook; Kudolo, John; Lee, Li M.; Lee, Molly; Lo, Daniel; Nakajima, Ryuichi; Park, Min Yoon; Tan, Gregory; Tang, Yanxia; Teo, Peggy; Tsuda, Sachiko; Wen, Lei; Yoon, Su-In

    2012-10-01

    Studies of the brain promise to be revolutionized by new experimental strategies that harness the combined power of optical techniques and genetics. We have mapped the circuitry of the mouse brain by using both optogenetic actuators that control neuronal activity and optogenetic sensors that detect neuronal activity. Using the light-activated cation channel, channelrhodopsin-2, to locally photostimulate neurons allows high-speed mapping of local and long-range circuitry. For example, with this approach we have mapped local circuits in the cerebral cortex, cerebellum and many other brain regions. Using the fluorescent sensor for chloride ions, Clomeleon, allows imaging of the spatial and temporal dimensions of inhibitory circuits in the brain. This approach allows imaging of both conventional "phasic" synaptic inhibition as well as unconventional "tonic" inhibition. The combined use of light to both control and monitor neural activity creates unprecedented opportunities to explore brain function, screen pharmaceutical agents, and potentially to use light to ameliorate psychiatric and neurological disorders.

  18. Antimicrobial peptides in the brain.

    Science.gov (United States)

    Su, Yanhua; Zhang, Kai; Schluesener, Hermann J

    2010-10-01

    Antimicrobial peptides (AMPs) are an evolutionarily conserved component of the innate immune system of many species. The brain is an immunologically privileged organ but can produce a robust immune response against pathogens and cell debris, promoting rapid and efficient clearance. AMPs may be critically involved in the innate immune system of the brain. Though the mechanisms of AMPs' action in the brain still need further elucidation, many studies have shown that AMPs are multifunctional molecules in the brain. In addition to antimicrobial action, they take part in congenital and adaptive immune reactions (immunoregulation), function as signaling molecules in tissue repair, inflammation and other important processes through different mechanisms, and they might, in addition, become diagnostic markers of brain disease.

  19. Rapid brain scanning radiopharmaceutical

    Science.gov (United States)

    Sargent, III, Thornton W.; Shulgin, Alexander T.; Mathis, Chester A.

    1987-01-01

    A method for detecting the blood flow in animals, particularly in the brain, is provided wherein a detectable amount of a novel radioactive compound of the formula I is administered to one animal: ##STR1## wherein R.sub.1 and R.sub.2 are independently alkyl of 1 to 6 carbon atoms or benzyl; R.sub.3 is alkyl of 1 to 6 carbon atoms, benzyl, cyclopropylalkyl of 4 to 6 carbon atoms, or cyanoalkyl of 2 to 6 carbon atoms; R.sub.4 is hydrogen, benzyl or alkyl of 1 to 6 carbon atoms; with the provisos that R.sub.4 is not isopropyl and when R.sub.4 is methyl, R.sub.3 is not benzyl; and X is a radioactive halogen.

  20. The polyphonic brain

    DEFF Research Database (Denmark)

    Sturm, Irene; Treder, Matthias S.; Dähne, Sven

    Rapid changes in the stimulus envelope (indicating tone onsets) elicit an N1-P2 ERP response, as has been shown for clicks and sine waves, musical tones and for speech. Canonical Correlation Analysis with temporal embedding (tkCCA), a multivariate correlation-based method, allows to extract brain...... responses to these changes in continuous auditory stimuli. Here, we (1) probe, whether tkCCA can be applied to track changes in the stimulus envelope in the EEG of subjects who were presented with semi-artificial monophonic music clips of three instruments. (2) On polyphonic trials, composed of the same...... parts as in 1), we explore, whether the tkCCA-filters 10 20 derived in 1) can recover a representation of each instrument’s part from the EEG where subjects listened to the polyphonic stream. (3) We explore, whether, eventually, such a representation is influenced by focused attention....