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Utilizing reflected countertransference Applying the reflection process as a teaching tool in supervision.

There are times when teaching cannot proceed through the abstract presentation of content and must progress by the demonstration of what is to be taught. This is true whenever a student is unable, for whatever reason, to appropriately apply such abstract material to the concrete task before him. This may be due to a number of factors, one of the most common of which is the lack of qualitatively similar experiences to which to refer. The teaching of complicated processes such as psychotherapy is an example, especially when the trainee is relatively unsophisticated and/or seems unable to abstract from discussion of blocking phenomena, where it may become necessary to "act in" the feeling tones which are to be the cues for the behaviour to be learned, instead of persisting with abstract interpretations. When, in supervision, a supervisee recreates the conditions existing in the therapeutic situation, this procedural behaviour is called the "Reflection Process". This process often appears to be unconsciously motivated by the need of the supervisee to solicit from the supervisor a practical demonstration which he does not know how to solicit otherwise. Even if the Reflection Process is due mainly to unresolved, unconscious conflicts of the supervisee, it can be a useful clue as to what transference-countertransference problems he is having difficulties with. The fact that such behaviour on the part of the supervisee may arise out of unresolved unconscious conflictual material should not become a reason for dismissing it. Instead, supervisors should become proficient at recognizing the countertransferential feelings in themselves, which can be an accurate reflection of the feelings troubling the supervisee in his dealings with this patient; and they should recognize the distress signal on the part of the supervisee, which can often be responded to constructively. In the supervision, the supervisor at times can, almost unwittingly, come to play the role which the supervised therapists plays in the supervised therapy and, if not aware of the Reflector Process, he may not realize that the countertransferential feelings which underly his assuming that role may not be primarily a response to the character of the therapist he is supervising but rather to that of the patient. They may also be a reflection of the process problem in the supervised therapy. It is not essential that this process be labeled in the supervision; what is essential is that its ramifications be recognized by the supervisor.

Allied Health Personnel↗

Assessing students' self-reflective thinking in the classroom: the self-reflective thinking questionnaire.

The development of a questionnaire to assess students' use of self-reflective thinking in the classroom is described. On the basis of a literature search, items were selected. The items are students' self-report measures and open-ended questions. The participants were 96 fourth grade secondary vocational students from six classes in The Netherlands, all of whom were used to learning in cooperative groups. Complementary data were selected to validate this questionnaire. Visual inspection of the frequencies indicated a difference between levels of students' self-reflecting thinking. Between-subjects t tests showed that students' motivational engagement and marks could be used to validate the measure of self-reflective thinking. The implication of the questionnaire to assess students' self-reflective thinking within the classroom are discussed.

Adolescent↗

Reflection in clinical teaching: an analysis of reflection-on-action and its implications for staffing residents.

In order to improve clinical teaching in the ambulatory care setting, clinical teachers need to know the range of instructional strategies available to them. One potentially useful strategy is that of reflection. In this paper, reflective practice will be described in the context of the professional training of physicians, with the purpose of improving clinical teaching. An example of reflective practice--a transcript of a video tape of an attending physician and a resident in a general internal medicine clinic--will be analyzed. In this transcript, reflective comments by both the attending physician and resident are integrated into the original dialogue.

Ambulatory Care↗

Degradation, amorphization, and recrystallization of ion bombarded Si(111) surfaces studied by in situ reflection electron microscopy and reflection high energy electron diffraction techniques.

In this paper we report the effect of noble gas ions bombardment on the degradation of atomically flat Si(111) surfaces at room and high (400 degrees C-600 degrees C) temperatures. Reflection high energy electron diffraction (RHEED) and reflection electron microscopy (REM) have been used to characterize the topography and structure of the as-implanted and post annealed surface layers. It is shown that the fading of the specularly reflected beam is not directly related to the amorphization of the surface. This experimental study has also evidenced the difficulties one meets to regrow a defect-free material after amorphization by noble gas bombardment. For high temperature for which the amorphization is not possible, the surface loses its stepped structure and turns into a monocrystalline but atomically rough surface. This roughness is a function of substrate temperature.

Argon↗

Characterization of the annealed (0001) surface of sapphire (alpha-Al2O3) and interaction with silver by reflection electron microscopy and scanning reflection electron microscopy.

Annealed (0001) surfaces of single-crystal sapphire (alpha-Al2O3) rod have been studied in the electron microscope using reflection electron microscopy (REM), scanning reflection electron microscopy (SREM), and reflection high energy electron diffraction (RHEED). Annealed surfaces of (0001) sapphire are vicinal and characterized by close-packed (0001)-oriented terraces separated by faceted multiple-height steps, with edges parallel to energetically preferred low-index directions (less than 1010 greater than and less than 1120 greater than). These structural features are not seen on cleaved surfaces or polished surfaces treated at temperatures less than 1,250 degrees C. Oxygen-annealing produces clean surfaces which prove useful for investigating the interaction of deposited metals with the (0001) sapphire. Both REM and SREM (with microdiffraction spots) techniques have been used to observe fine structure of flat Ag islands on the scale of 1-100 nm on the (0001)-oriented terraces as well as aggregations at the steps. A preliminary result on interaction with Cu is also included.

Aluminum Oxide↗

Hygrothermal degradation of (3-glycidoxypropyl)trimethoxysilane films studied by neutron and X-ray reflectivity and attenuated total reflection infrared spectroscopy.

Thin films of organosilanes have great technological importance in the areas of adhesion promotion, durability, and corrosion resistance. However, it is well-known that water can degrade organosilane films, particularly at elevated temperatures. In this work, X-ray and neutron reflectivity (XR and NR) were combined with attenuated total reflection infrared (ATR-IR) spectroscopy to study the chemical and structural changes within thin films of (3-glycidoxypropyl)trimethoxysilane (GPS) after exposure for various periods of time to air saturated with either D2O or H2O at 80 degrees C. For NR and XR, ultrathin (approximately 100 A) films were prepared by spin-coating. Both D2O and H2O provide neutron scattering contrast with GPS. Variations in the neutron scattering length density (SLD) profiles (a function of mass density and atomic composition) with conditioning time were measured after drying the samples out and also swelled with H2O or D2O vapor at room temperature. For samples that were dried out prior to measurement, little or no change was observed for H2O conditioning up to 3.5 days, but large changes were observed after 30 days of conditioning. The range of conditioning time for this structural change was narrowed to between 4 and 10 days with XR. The SLD profiles indicated that the top portion of the GPS film was transformed into a thick low-density layer after conditioning, but the bottom portion showed little structural change. A previous NR study of as-prepared GPS films involving swelling with deuterated nitrobenzene showed that the central portion of the film has much lower cross-link density than the region nearest the substrate. The present data show that the central portion also swells to a much greater extent with water and hydrolyzes more rapidly. The chemical degradation mechanism was identified by IR as hydrolysis of siloxane bonds. For ATR-IR, GPS films were prepared by dip-coating, which resulted in a greater and more variable thickness than for the spin-coated samples. The IR spectra revealed an increase in vicinal silanol generation over the first 3 days of conditioning followed by geminal silanol generation. Thus, the structural change detected by NR and XR roughly coincided with the onset of geminal silanol generation. Finally, little change in the reflectivity data was observed for films conditioned with D2O at 80 degrees C for 1 month. This indicates that hydrolysis of Si-O-Si is much slower with D2O than with H2O.

Journal Article↗

Humpty Dumpty: reflection and reflective nursing practice.

The recent increase in the amount of published work relating reflection and reflective practice to nurses and nursing practice suggests that nurses value the opportunities which this approach is believed to provide. There also appears to be an underlying assumption that we all share the same concepts, hence the association with Humpty Dumpty. Indications of attempts to mechanize the processes and to endow the perceived skills with an élitism are becoming evident. In contrast, there are other attempts to foster the notion of accepting uncertainty, unpredictability and the opportunity for increased understanding to emerge. In this paper, the roots of some of these concepts are traced. The appropriateness of traditional values and assumptions, based on natural science perspectives, in relation to reflective processes and the practice of nursing is questioned. The development of a multi-faceted approach which takes account of differing contexts and the factors which influence them is suggested.

Humans↗

Reflections on the role of the nursing development facilitator in clinical supervision and reflective practice.

The notions of clinical supervision and reflective practice are attracting considerable interest across the spectrum of nursing. This paper focuses upon how the two were linked together and, with the support of an independent survey, were used to evaluate the nursing development facilitator role. It is argued that reflective practice, as a model of clinical supervision, may provide a forum for nurses to explore the value of their actions. Linked to this, the personal knowledge that is revealed may mirror reality and as a result it is argued that there is benefit in evaluating practice through reflection.

Attitude of Health Personnel↗

Reflectance in situ hybridization (RISH): detection, by confocal reflectance laser microscopy, of gold-labelled riboprobes in breast cancer cell lines and histological specimens.

A method for reflectance in situ hybridization (RISH) is presented. The importance of the method is demonstrated by results obtained on cytological and histological breast cancer specimens. Scattering reflectance signals from 1-nm colloidal-gold particles after RNA/RNA in situ hybridization, using digoxigenin-labelled riboprobes, were detected by confocal scanning laser microscopy. The mRNA expression of two ras-related genes, rho B and rho C, was analysed in human histological breast cancer specimens and in human breast cancer cell lines. Horizontal (x, y) and vertical (z) optical sections after three-dimensional imaging were used for visualization. A marked heterogeneity (between individual cells and between specimens) was noted for the expression of the rho B gene, both in cytological and in histological samples. On the other hand, rho C was always expressed and showed no heterogeneity. This method allows the identification of several cellular constituents in an heterogeneous tissue structure, as demonstrated by the simultaneous detection of rho B (or rho C) by reflectance and of DNA, cytokeratin and/or vimentin by fluorescence.

Antibodies, Monoclonal↗

A reflected energy prediction model for long-range hydroacoustic reflection in the oceans.

Acoustic energy from underwater earthquakes and explosions can propagate over long distances with very little attenuation in the deep ocean. When this sound encounters a seamount, island, or continental margin, it can scatter and again propagate over long distances. Hydrophones in the deep sound channel can detect these reflections tens of minutes or hours after arrivals from the direct source-to-receiver path. This paper presents the Reflected Energy Prediction (REP) model, a model for predicting these reflected arrivals. For a given source and receiver, the REP model uses a detailed knowledge of the underwater environment and components of the Hydroacoustic Coverage Assessment Model, HydroCAM, to predict the impulse response of the ocean. When this impulse response is convolved with a source function, a waveform envelope prediction is made that can be compared with recorded data. In this paper we present the model and a few applications of the model using data recorded from earthquakes and explosions in the Atlantic and Indian Oceans. These examples illustrate the use of the model and initial steps toward model calibration.

Journal Article↗

Reflections on reflections.

Most cochlea models consider the system as a pair of channels separated by a flexible membrane (basilar membrane). In the part of the wave where the stiffness of the membrane dominates, traveling waves are set up. Because of varying propagation conditions the speed of propagation diminishes most rapidly when the wave approaches the region where the basilar membrane shows resonance for the frequency under consideration. It might be expected that such a rapid change of propagation velocity gives rise to reflection. In this paper a one-dimensional model is considered in such a way that resonance properties stand out clearly. The results show that even when extremely little damping occurs (damping factor less than 10(-3)) virtually no reflection is evident. under conditions of low damping the nature of the response is such that it is incompatible with inner hair cell or nerve fiber responses from the cochlea: some kind of "sharpening mechanism" should be present. Limitations of the model considered should be studied further to verify the conclusions in more general cases. Despite these limitations the present model serves to illustrate typical physical phenomena, like reflection and energy dissipation, quite well.

Basilar Membrane↗

Reflections on reflective practice.

In recent years, a wide range of professions have adopted 'reflective practice' as an approach to professional development, and many professions have made it a mandatory dimension of their membership credentialling process. Despite the fact that it has been widely taken up in the professional world, there are many different conceptualizations and ideas about what it is. In this paper, six theoretical underpinnings of reflective practice are considered, and suggestions are made about how we can begin to incorporate reflection into our own practices.

Education, Professional↗

Nonlinear and bistable reflection minima at lambda = 10.6 microm in an attenuated total reflection configuration with a highly doped n-GaAs film.

n-GaAs can be so highly doped that its plasma frequency is larger than the associated frequency of a CO2 laser emission line, leading to a negative real part of the dielectric permittivity. We studied linear and nonlinear reflection properties of structures composed of such thin highly doped n-GaAs film in an attenuated total reflection (ATR) configuration. We show that deep reflection minima coincide with the excitation of Brewster-type modes of the multilayer structure. These minima feature strong nonlinear and bistable behavior and are sensitive to geometrical and material parameters. The proposed ATR configuration can be used to determine doping concentrations with an accuracy of better than 1 partper thousand and different deformation potentials of the higher-conduction bands in n-GaAs.

Journal Article↗

Effect of nonparallelism of guiding air-liquid layers on the reflection dip in attenuated total reflection.

The effect attributable to the nonparallelism of the guiding layer of a planar waveguide on the reflection dip of the attenuated total reflection (ATR) spectrum is investigated. It is considered that the reflected light from a nonparallel waveguide is, indeed, the superposition of a series of beams propagating in different directions. The ATR spectra are numerically calculated with various inclination values. Compared with those of the corresponding parallel ones, with the inclination of waveguides exceeding 1 microrad, the characteristics of the ATR spectra begin to differ considerably, and when the inclination reaches 10 microrad, the sensitivity of sensors based on the waveguide is reduced by 62.7% and 67.3% for the free space coupling structure and the prism coupling structure, respectively. When the inclination becomes larger than 100 microrad, the ATR phenomenon cannot be observed any longer.

Journal Article↗

Specular reflection and diffuse reflectance spectroscopy of soils.

Studies on the occurrence and effects of specular reflection in midinfrared spectra of soils have shown that distortions due to specular reflection occur for both organic (humic acid) and non-organic fractions (carbonates, silica, ashed fraction of soil). The results explain why the spectra of CaCO(3) in limed soils do not match published spectra and offer an explanation as to why the presence of inorganic C interferes with the development of calibrations for organic C. These results may also have implications for the use of mid-infrared spectra for quantitative and qualitative analysis of soils. For example, libraries of spectra collected by means other than diffuse reflectance would be largely useless for comparing mineral spectra to soil spectra. To obtain the best results with forages and grains, it is necessary to develop separate calibrations for different products, but this has not seemed to be a problem for diverse sets of soil samples with C contents of 0 to 5%. Mid-infrared calibrations have also appeared to be more robust than the corresponding near-infrared calibrations in that fewer outliers are found. However, the results discussed here indicate that at least for some soil types (e. g., large differences in mineralogy or C contents), separate calibrations may be necessary.

Artifacts↗

Bloch wave treatment of symmetry and multiple beam cases in reflection high energy electron diffraction and reflection electron microscopy.

Bloch wave equations for the multiple beam cases in reflection high energy electron diffraction (RHEED) are derived from the integral equation by forward- and back-scattering Green function operators. A linearization is achieved through separation in a forward- and a back-scattering component for each beam. This leads to a set of fundamental equations similar to the transmission case, but with a non-Hermitian matrix, and the beams may be entered as either forward-, back-scattered, or both. The number of beams needed to be included in RHEED calculations is thus reduced, and so are the computing time and computer space required. The systematic row case, corresponding to reflections from planes parallel to the crystal surface, is treated in detail and illustrated by calculations of dispersion surfaces and rocking curves for Au(001). Symmetry relations for the systematic row and between reciprocal rows are discussed and illustrated.

Crystallography↗

A comparative study of mid-infrared diffuse reflection (DR) and attenuated total reflection (ATR) spectroscopy for the detection of fungal infection on RWA2-corn.

An investigation into the rapid detection of mycotoxin-producing fungi on corn by two mid-infrared spectroscopic techniques was undertaken. Corn samples from a single genotype (RWA2, blanks, and contaminated with Fusarium graminearum) were ground, sieved and, after appropriate sample preparation, subjected to mid-infrared spectroscopy using two different accessories (diffuse reflection and attenuated total reflection). The measured spectra were evaluated with principal component analysis (PCA) and the blank and contaminated samples were classified by cluster analysis. Reference data for fungal metabolites were obtained with conventional methods. After extraction and clean-up, each sample was analyzed for the toxin deoxynivalenol (DON) by gas chromatography with electron capture detection (GC-ECD) and ergosterol (a parameter for the total fungal biomass) by high-performance liquid chromatography with diode array detection (HPLC-DAD). The concentration ranges for contaminated samples were 880-3600 microg/kg for ergosterol and 300-2600 microg/kg for DON. Classification efficiency was 100% for ATR spectra. DR spectra did not show as obvious a clustering of contaminated and blank samples. Results and trends were also observed in single spectra plots. Quantification using a PLS1 regression algorithm showed good correlation with DON reference data, but a rather high standard error of prediction (SEP) with 600 microg/kg (DR) and 490 microg/kg (ATR), respectively, for ergosterol. Comparing measurement procedures and results showed advantages for the ATR technique, mainly owing to its ease of use and the easier interpretation of results that were better with respect to classification and quantification.

Food Analysis↗

How well does reflectance pulse oximetry reflect intrapartum fetal acidosis?

OBJECTIVE: The purpose of this study was to determine the sensitivity and specificity for acidosis of intrapartum fetal oxygen saturation measured by reflectance pulse oximetry. STUDY DESIGN: Intrapartum fetal oxygen saturation values per labor stage were correlated with umbilical artery pH, base excess and PCO(2) by regression analysis. Receiver operating characteristic curve analysis was performed with the use of historic umbilical arterial cutoff values; a fetal oxygen saturation cutoff range with optimal sensitivity and specificity was calculated. RESULTS: Mean fetal oxygen saturation was 42.8%, over the mean 132 minutes of 107 recordings. Overall areas under the sensitivity and specificity curves were 0.77 for pH and PCO(2), decreasing sharply toward birth; all areas for base excess were poor (approximately 0.5). Depending on stage and umbilical artery parameter, fetal oxygen saturation cutoffs were 33% to 36%, with sensitivities of 0.67 to 0.8 and specificities of 0.62 to 0.90. CONCLUSION: Fetal oxygen saturation sensitivities and specificities for acidosis do not yet justify the supplementation of cardiotocography with routine reflectance pulse oximetry.

Acidosis↗