Reflection Type Research Articles

Representations of the Super-Yangian of Type D(n, m)

AbstractWe consider the classification problem for finite-dimensional irreducible representations of the Yangians associated with the orthosymplectic Lie superalgebras $$\mathfrak {osp}_{2n|2m}$$ osp 2 n | 2 m with $$n\geqslant 2$$ n ⩾ 2 . We give necessary conditions for an irreducible highest weight representation to be finite-dimensional. We conjecture that these conditions are also sufficient and prove the conjecture for a class of representations with linear highest weights. The arguments are based on a new type of odd reflections for the Yangian associated with $$\mathfrak {osp}_{2|2}$$ osp 2 | 2 . In the Appendix, we construct an isomorphism between the Yangians associated with the Lie superalgebras $$\mathfrak {osp}_{2|2}$$ osp 2 | 2 and $$\mathfrak {gl}_{1|2}$$ gl 1 | 2 .

Личностно-групповые детерминанты прощения в ситуации меж- и внутриэтнического взаимодействия

This study is relevant due to growing inter- and intra-group tensions, which can be alleviated through forgiveness. The aim of the study is to identify how personality and group factors influence forgiveness in inter- and intra-ethnic interactions among representatives of different ethnic and language groups. Hypothesis: Personality and group factors – represented by subjective qualities aligned with the mentalities and cultural values of representatives from different ethnic and language groups – significantly influence forgiveness in inter- and intra-ethnic interactions. Participants: Students of Korolenkov University (Glazov, Udmurt Republic) aged from 17 to 30 years (N = 249, M = 20.3; SD = 2.8, 88 men, 161 women), grouped into three samples based on their ethnicity and language: Slavic (n = 105), Finno-Ugric (n =7 1), Turkic (n = 73). Methods (tools): The study employed multiple methodologies, including “Methodology for Diagnosing Manifestation of Ethnicity” (V. Yu. Khotinets) to assess objective criteria related to ethnicity, a Russian-language version of the Heartland Forgiveness Scale (adapted by S. K. Nartova-Bochaver, A. A. Adamyan) to diagnose the ability to forgive in inter- and intra-ethnic interaction. Additionally, the research utilized several methodologies to explore personality and group factors, including “Methodology of Self-Attitude Analysis” (S. R. Pantileev), “Short Dark Triad Test” (D. Paulhus, K. Williams, adapted by M. S. Egorov, M. A. Sitnikov, O. V. Parshikov), “PEN” questionnaire (H. Eysenck, S. Eysenck adapted by A. G. Shmelev), “Self-Actualization Test” (E. Shostrom, adapted by L. Ya. Gozman, M. V. Croz), “Tolerance to Uncertainty” (S. Budner, adapted by G. U. Soldatova), “The Differential Type of Reflection” (D. A. Leontiev, E. N. Osin). Results: Acceptance of self-actualizing personality values and systemic reflection are universal determinants of forgiveness in inter-ethnic interaction. The specific determinants of forgiveness of “others” in the Slavic ethnic and language group are agency, activity, integrity; in the Finno-Ugric group – independence of traditional values and behaviors from outside influences; in the Turkic group – the level of maturity of personality and systemic reflection. In the intra-ethnic interaction context, the determinants of forgiveness are proactivity and agency in the Slavic group; in the Finno-Ugric – prosocial orientation; in the Turkic – emotional self-control, prosocial orientation and reflexivity. Main conclusions: Forgiveness that aligns with the mentalities and cultural values of the reference ethnic group manifests proactive behavior of a reflective personality. Practical Significance: The research results can aid specialists involved in the sociocultural and socio-psychological adaptation of refugees and relocated people.

Reflective Psychological Counselling as a Special Type of Social and Interpersonal Influence Designed to Offer Psychological Support

This theoretical article discusses a new approach to psychological support known as reflective psychological counselling. In this approach, the primary focus is on reflection, while the main method is progressive reflection. This counselling method allows psychologists to use various successful solutions for client challenges, integrate approaches from other fields and foster a distinctive and impactful therapeutic practice. Also, this theoretical article describes specific methods within reflective psychological counselling. The primary method, progressive reflection, provides a pathway for problem-solving and learning how to identify solutions. At the same time, special emphasis is placed on techniques such as reflective listening, guided decentring, positional analysis, and self-determination. Additionally, several specialized methods are designed for situations where clients must make decisions and take responsibility. These include the method of focused reflection, the “tree of contradictions” for addressing internal conflicts, the method for constructing and transforming the problem field, philosophical reflection and fostering a deep awareness of universal life principles. Finally, this theoretical article consolidates the key concepts of reflective psychological counselling and its objectives in psychotherapy and outlines the stages, methods and techniques that facilitate various types of reflection.

Development of a Deployable Reflector Antenna for the Synthetic Aperture Radar Satellite, Part 2: Manufacturing and Qualification of the Main Reflector Using a Honeycomb Sandwich Composite Structure

A deployable reflector antenna (DR-A) is a structure that can be stored in a large-diameter Synthetic Aperture Radar (SAR) antenna and be mounted onto a launch vehicle. Considering the performance of the launch vehicle, it is necessary to develop a lightweight, high-performance antenna structure. The solid-type deployable reflector antenna is composed of a number of unit main reflectors. To reduce the weight of the antenna, a lightweight main reflector must be developed. In this paper, following “Development of Deployable Reflector Antenna for the SAR Satellite (Part 1)”, the manufacturing and qualification of the main reflector using honeycomb sandwich composites are described. Four types of composite main reflectors were manufactured with variables in the manufacturing process. The manufacturing variables include the curing process of the structure, the application of an adhesive film between the sheet and the core, and the venting path inside of the sandwich core. After manufacturing the main reflector, we performed weight measurements, non-destructive testing (NDT), surface error measurement using a Coordinate Measurement Machine (CMM), and modal testing for each type of composite main reflector. Through the research and development process, we found that a perforated hole is necessary when excluding the adhesive film during bonding of an aramid core and a CFRP sheet, and a lightweight composite reflector could be developed through this process. We selected the main reflector with the best performance and developed a composite main reflector that can be applied to satellites.

A New Caffeine Detection Method Using a Highly Multiplexed Smartphone-Based Spectrometer.

Smartphones equipped with highly integrated sensors are increasingly being recognized as powerful tools for rapid on-site testing. Here, we propose a low-cost, portable, and highly multiplexed smartphone-based spectrometer capable of collecting three types of spectra-transmission, reflection, and fluorescence-by simply replacing the optical fiber attached to the housing. Spectral analysis is performed directly on the smartphone using a custom-developed app. Furthermore, we introduce a high signal-to-noise ratio (SNR) caffeine detection scheme that leverages aspirin and salicylic acid as fluorescent probes, allowing for the rapid and straightforward detection of caffeine in various samples. The fluorescence quenching of the probes was found to be linearly related to the caffeine concentration (0-200 μM), and the recoveries of the commercially available caffeine-containing samples were in the range of 98.0333-105.6000%, with a limit of detection (LOD) of 2.58 μM. The reliability and stability of the on-site assay using the smartphone spectrometer were verified. More importantly, this spectrometer demonstrates great potential as a versatile device for use outside of laboratory settings by enabling different operating modes tailored to various scenarios.

The Lambert diffuse reflection model revisited.

The Lambert diffuse reflection model is used widely in computerized prediction of sound in rooms as well as for outdoor scenarios. One seemingly surprising consequence of the model was pointed out by Borish [J. Audio Eng. Soc. 34, 539-545 (1986)]: A diffusely reflecting, non-absorbing wall seems to give a 3 dB stronger reflection than a specularly reflecting wall for a source and receiver along the same plane normal. Similar observations have been made by others, and it is usually commented that the two reflection types distribute the reflected energy in different directions. The aspect of energy conservation does not seem to have been sorted out entirely. It is shown here that the difference between an omnidirectional receiver, like a microphone, and a surface element receiver, which can give the total reflected power, explains the claim. Analytic solutions and numerical evaluations of the well-known integrals for a single infinite wall confirm that energy conservation is indeed maintained and also lead to a spatial distribution of the Lambert reflection strength, which differs substantially from the previously published values. The special case can serve as a useful benchmark test of implementations of diffuse reflections, which follow Lambert's law.

Study of illumination and reflection performances on light-colored pavement materials

To accurately assess the light effects of light-colored pavement materials, a reflection measurement device was applied to evaluate the reflective characteristics of pavement materials equipped with light-colored aggregates and recycled glass. DIAlux evo software was employed for luminance-based lighting calculations to analyze the impact of reflection characteristics on lighting performance. The study highlights the necessity of using reflection characteristics to evaluate pavement lighting efficiency and confirms the energy-saving advantages of light-colored pavements. The results demonstrate that light-colored aggregates significantly increase the average luminance factor of asphalt pavements, converting the reflection type to diffuse reflection, while glass aggregates enhance specular reflection. Light-colored pavements effectively improve the luminous environment of road surface, ensuring both good visual performance and comfort, while reducing energy consumption per kilometer. From the perspective of light reflection mechanisms, diffuse reflective materials are most advantageous for energy-efficient lighting.

Climate change and disturbance interact to alter landscape reflectivity (albedo) in boreal forests across a large latitudinal gradient in Siberia

Boreal forests form the largest terrestrial biome globally. Climate change is expected to induce large changes in vegetation of high latitude ecosystems, but there is considerable uncertainty about where, when, and how those changes will occur. Such vegetation change produces major feedback to the climate system, including by modifying albedo (reflectivity). Our study used the LANDIS-II forest landscape model to project forest dynamics on four representative landscapes (1 M ha) for 280 years into the future under a range of climate scenarios across a broad latitudinal gradient in Siberia. The model estimated the albedo of the vegetation and any snow on each landscape grid-cell through time to quantify surface albedo change in response to climate change and disturbances. We found that the shortening of the snow-covered season (winter) decreased annual average albedo dramatically, and climate change facilitated the invasion of tundra by boreal trees in the northernmost landscape (reducing albedo in all seasons). However, in other landscapes, albedo increased in summer due to disturbances (fire, wind, insects, harvest), eliminating or reducing leaf area in the short-term, and in the mid-term by promoting more reflective forest types (deciduous, light conifers). This increased albedo was somewhat ephemeral and under climate change was overwhelmed by the shortening of the snow-covered season that greatly reduced albedo. We conclude that the primary driver of the overall reflectivity of boreal ecosystems is not vegetation, but rather, the length of the snow-covered season. Because climate change is likely to dramatically shorten the snow season, the concurrent reduction of albedo has the potential to act as a powerful positive feedback for climate change. Managing natural and anthropogenic disturbances may be the only tool with potential to mitigate the reduction of albedo by climate change in boreal ecosystems because management to encourage more reflective forest types has relatively small effect.

Study on the influence of expansion waves on the reflection type of shock wave in double-wedge configurations

Abstract This paper investigates how variations in the relative positioning between the expansion fan emitted from the triple point in the shock/shock interference on double-wedge geometries in confined spaces and the incidence point of oblique shocks influence the transition of oblique shock reflection types, and understands the roles of expansion waves in inhibiting MR. Predictive analysis through the shock polar line provides critical values for the transition of oblique shock reflection types under the influence of expansion fan effects. The position where the shock/expansion fan undergoes post-oblique reflection on the opposite sidewall can be controlled by adjusting the model’s contraction ratio (H 1/H 2). This study uses the density-based solver blastFOAM in openFOAM to numerically solve the Euler equations, conducting inviscid calculations of shock/shock interactions induced by double wedges in confined spaces with ideal gases. This study compares pressure values in different regions obtained from numerical simulations and examines the reflection types of oblique shocks on opposite sidewalls, confirming the feasibility of shock polar analysis and the accuracy of theoretical predictions.

New type of high-power laser protection coatings with both high reflectivity and low thermal conductivity

With the rapid development of laser technology, the threat of laser to equipment is increasing. However, there is not any high power laser protection materials without flame and smoke during irradiation. In this study, we combine the advantages of high reflection type and thermal insulation type laser protection materials, exploring a series of RE2Zr2O7(RE = Y, La, Sm, Eu, Yb) ceramics with high reflectivity and low thermal conductivity and investigate their laser ablation behaviors. The results show RE2Zr2O7(RE = Y, La, Sm, Eu, Yb) all have high reflectivity close to the reflectivity of metal and relatively low thermal conductivity comparable to YSZ-2.5 W / (m·K). The laser ablation results display that all five kinds of coatings stay intact irradiated under 500 W/cm2 for 10 s which indicates their great laser protection ability. After irradiated under 1000 W/cm2 for 10 s, Y2Zr2O7 and La2Zr2O7 coatings are still intact and the back surface temperature of La2Zr2O7 is lower which is about 261 °C. Besides, La2Zr2O7 coating also have advantages of no flame and smoke which is suitable for environmental protection. In conclusion, La2Zr2O7 has great potential application in high power laser protection.

The study of newly-qualified teachers’ psychological well-being and personal reflection

Introduction. The article examines the peculiarities of psychological well-being and satisfaction with the profession of novice teachers in connection with personal reflection. The purpose of the study is to reveal the specifics of psychological well-being and personal reflection of teachers at the initial stage of professional development. Materials and Methods. The study follows a systematic approach and the concept of psychological well-being (K Riff). In order to achieve the purpose of the research, the authors used theoretical (analysis, comparison, generalization, systematization) and empirical (tests) methods, as well as methods of statistical information processing. To collect relevant data, the methods were presented by means of a Google form via an online resource. The research sample consisted of 162 newly-qualified teachers from Omsk and the Omsk region whose work experience ranged between 6 months and 5 years. Results. The authors of the article obtained the following results: - analyzed and summarized Russian and international research investigations on issues of psychological well-being, the level of development of reflection and novice teachers satisfaction with their profession; - the empirical results of the study are presented, which reflect the priority indicators of psychological well-being, the level and types of personal reflection, the level of satisfaction with the professional development of newly-qualified teachers; the specifics of psychological well-being and personal reflection of teachers are revealed, the types of teachers at the initial stage of professional development are described. Conclusions. The specifics of psychological well-being and personal reflection of novice teachers are determined by difficulties in managing the environment, building interaction with colleagues and self-acceptance, readiness for personal growth and autonomy, and there is also insufficient development of reflection skills, in particular, reflection on communication and real activity, which affects satisfaction with professional activities. The types of novice teachers have been identified depending on the specifics of psychological well-being, the level of development and type of personal reflection, and satisfaction with profession.

Who cares about academic welfare in empirical data collection? Exploring the deficit in personal and psychological care for researchers in research ethics processes

ABSTRACT Ethics applications in academic research rarely account for the personal care and wellbeing of the researchers who undertake research. This paper reflects on the practice of carrying out research where the experiences of the participant and reflections of the researcher themselves are closely aligned. Such instances encourage the revisiting of difficult, troubling, and sometimes traumatic periods of the researchers’ personal life history. This article reflects on research conducted during a doctoral thesis which uses qualitative methods to understand the experiences of thirteen working-class professional services and administrative staff. I suggest that this type of personal reflection is involuntary, it is not actively pursued yet becomes inseparable from the conduct of research. Echoing the work of Brown and Wild ([2022]. Ethical Dilemmas in Education: Considering Challenges and Risks in Practice. Open University Press) this paper calls for additional support mechanisms to be implemented for researchers who conduct this sort of involuntary reflexivity in qualitative research, making suggestions for practical solutions within UK institutions.

Práctica reflexiva del profesorado en formación de la carrera de Historia, Geografía y Ciencias Sociales de la Pontificia Universidad Católica de Valparaíso

Introduction: The objective of the research is to identify what type of reflection the pre-services teachers in the History, Geography and Social Sciences program at the Pontifical Catholic University of Valparaíso develop at the end of their professional practice, in order to recognize challenges and training opportunities for the promotion of reflective practice. Methodology: Qualitative descriptive research that analyzed the performances of 33 pre-service teachers in their reflection protocol, identifying the type of reflection carried out: descriptive, comparative or critical. Results: The majority pre-service teachers, when evaluating the impact of their teaching, based on their students' learning and reflecting pedagogically, develop a descriptive reflection, to the detriment of a comparative and critical one. When it is requested to analyze the impact of pedagogical practice from the opinions of the students, this is of the comparative type. Discussions: Systematic reflection on educational practice constitutes a possibility for the formation of teaching identity. Conclusions: It is important to understand reflective practice as a key competence of teaching practice, which is consolidated as a space for continuous learning and reflection par excellence due to its approach and experience of teaching work.

Reflecting on Different Aspects of Classroom Teaching: Mirrors on the Road of Educators' Self-Professional Development

Nowadays, the topic of teacher professional development (TPD), has attracted a great deal of attention. Professional development aims to help teachers become aware of and learn the different skills and strategies they need to cope with different teaching contexts and situations as well as learners with different needs, interests, and backgrounds. Undoubtedly, reflection can be viewed as a pivotal tool on the road to teachers’ continuous professional development. Reflection is not but a mirror that reflects educators’ practices, shedding light on the positive as well as the negative aspects of the lesson to make informed decisions to address these issues or any other emerging challenges. After combing the literature, the researcher identified some areas where there is much still to be revealed. Therefore, the current study aims to reveal educators’ awareness of reflection and if they are involved in any type of reflection as a means of self-development. The study aims to investigate the different ways (if any) in which in-service language teachers engage with any form of reflection. Finally, the study aims to present teachers’ views on whether pursuing reflection has any positive impact on teachers' teaching, personality, and practices. Qualitative research was adopted as the method where the aim is to paint a clear picture of participants, their views as well as their practices. Therefore, interviews were implemented and they could successfully result in rich type of data. The data showed that participants resorted to reflecting on the different aspects of their classes. Implications for teachers and stakeholders were made clear whereas suggestions for future research were provided.

Study on the performance of flat-plate collectors with a bottom-mounted non-tracking broken line type reflector

The current flat-plate collectors commonly utilize non-tracking reflectors, primarily in a flat configuration, which is not optimal because it has a large reflection loss at varying solar altitude angles. Broken line type structures have been proven to exhibit better light concentration effects. However, existing research has focused solely on broken line type reflector installed at the top of the collector, leaving a gap in the study of broken line type reflector installed at the bottom. This paper investigates this aspect. Mathematical models for the performance analysis of collectors with/without bottom-mounted reflectors are established. The accuracy of the models is verified using the light tracing software, TracePro. The study includes the simulation analyses of the collector's performance and reflection losses under different conditions. The results indicate that the plate type reflector and broken line type reflector increase the heat collection by 27.92 % and 34.4 %, respectively. So the reflector can make the collector effectively operate in a wider range of ambient temperatures and radiation intensity. Increasing the horizontal length of the collector or adopting a series arrangement can effectively reduce reflection losses. This study provides theoretical guidance for the optimization design of flat-plate collectors with bottom-mounted broken line type reflectors.

On nonnegative invariant quartics in type A

The equivariant nonnegativity versus sums of squares question has been solved for any infinite series of essential reflection groups but type A. As a first step to a classification, we analyse An-invariant quartics. We prove that the cones of invariant sums of squares and nonnegative forms are equal if and only if the number of variables is at most 3 or odd.

Influence of specularity factor on heat transport in nanoribbons of different sizes

In this paper, the phonon heat transfer in two-dimensional conductors with different types of phonon reflection from the boundaries is examined. Heat conductors with arbitrary ratios of width W to length L are studied assuming that the mean free path between phonon-phonon collisions is infinite. The integral equations for the angular distribution functions of the incident and reflected phonons at a specific point on the conductor boundary were proposed. To solve these integral equations a new iterative method is proposed. The proposed iterative approach formally corresponds to taking into account subsequent collisions of phonons with the edges of the conductor. It ensures the convergence of the desired solution for any W/L ratio and for any value of the specularity coefficient p. Interpolation formulae are found to describe with sufficient accuracy the solution of the system of integral equations in the entire region of the specularity coefficient p from 0 to 1, and the W/L ratios ranging from 10 to 0.01. These formulae allow the construction of the isolines of the thermal conductance coefficient values, from which it is possible to determine the necessary values of W/L and parameter p to get the desired value of the thermal conductance.

On the electromagnetic wave interaction with subluminal, luminal, and superluminal mirrors

As predicted by A. Einstein [Ann. Phys. (Leipzig) 17, 891 (1905)], the electromagnetic wave reflected at a moving mirror is frequency-upshifted and intensified as high as the mirror velocity is close to the speed of light in vacuum. However, at this limit the mirror reflectivity vanishes, because the higher the wave frequency the more transparent matter is. To resolve this paradox, we analyse the electromagnetic wave propagation in medium where the refractive index modulation moves at the speed of light in vacuum. Although the luminal and superluminal modulations are unconditionally transparent for the incident radiation, they both can reflect. We find the new type of the electromagnetic wave reflection with the increasing in time frequency inside the luminal mirror. If the modulation disappears the high frequency radiation is released as a short wavepacket.

Reflective and ruminative types of self-consciousness among young adults with perfectionistic personality traits

Introduction and objective: Motives for self-observation can be diverse. This study aims to determine whether young adults with perfectionistic personality traits are closer to the ruminative or reflective type of private self-consciousness. Materials and methods: The study involved 183 healthy individuals aged 18–30 years (M = 20.87, SD = 3.24), with women accounting for 57%. The Big Three Perfectionism Scale (BTPS) by Smith and the Rumination-Reflection Questionnaire (RRQ) by Trapnell and Campbell were used. Results: The results indicate that perfectionism is positively related to the ruminative type of self-consciousness. Reflexivity, as cognitive curiosity about oneself, represents a more mature way of functioning for which perfectionism is unnecessary. In contrast, perfectionism is strongly associated with critical self-examination and has much in common with the ruminative form of self-consciousness. Self-critical perfectionism thus becomes a strategy whereby increased rumination, i.e. ruminating about past and potential failures, leads individuals to believe they are preventing future failures. Conversely, grandiose perfectionism protects against rumination. Individuals do not perceive their mistakes and, therefore, do not ruminate about them. Conclusions: Based on the Three Big Perfectionism Scale, the results confirm the association of the ruminative type of private self-consciousness with perfectionism and its absence between the reflective type and perfectionism.

Anthropological turn in musical culture of the XX century

The anthropological turn in the system of cultural and musicological reflection determines the transformation of the image of man in the culture of the XX century. The ontological and phenomenological dimensions of the presentation of a person in the media space are changing. If the semiological turn was defined as a movement of structuralist and post-structuralist studies, and the visual turn is associated with the transformation of visual practices, the emergence of a certain visual environment, then the anthropological turn in music touches on the deep psycho-physiological foundations of the formation of a musical image. The purpose of the article is to determine the cultural characteristics of these turns as an aesthetic and anthropological phenomenon. The methodology is presented with comparative and systemic approaches, which makes it possible to determine the integrity of performance in music as a meta-cultural and meta-artistic integrity. The scientific novelty. The anthropological turn occurs as a systemogenesis of cultural paradigms. Systemogenesis is the uneven development of system components (subsystems). A person as a cultural phenomenon can be considered as a system, albeit in a certain context, from a certain point of view. Systemogenesis of reflection as an anthropological turn characterizes the change of the image of a person in different realities of reflection — philosophical, cultural, and art. These paradigms, in fact, musical, creative, and artistic become ecological, because they are lifesaving in terms of preserving the integrity of a person, culture, in particular musical and performing culture. The anthropological turn indicates the artist-performer behind the realization of the musical space, music as the integrity of culture. Semiological is related to notation systems, information transmission and understanding of music as a symbolic phenomenon. The visual turn characterizes the communicative aspects of performance in musical culture as a whole. The results. Cultural genesis in performance is a system genesis of paradigms dominated by either a symbiotic or a monistic paradigm, focused on authenticity, creativity, deconstruction, decomposition, etc. All this can be noted as paradigms of creativity in general. The integrity of the modeling of the modern musical space is being formed, in particular a genetic algorithm with all the properties of sound and other configurations of a synthetic vision of an artistic image. The practical significance of the article. The practical significance of the work lies in the fact that practicing musicians and musicologists join the modern cultural reflection focused on the ecosystem approach. In particular, performing activities in music are oriented both on the anthropological constants of the performer and on preserving the traditions of national performing schools. In post-classical musical cultural studies, performing activity is interpreted as a certain systemogenesis. The creation of new systems of performing culture arises as a self-sufficient synthesis based on an appeal to the origins of national musical culture, and the entire corpus of problems of performing art is presented in the context of premodern, modern and postmodern types of reflection.