Real Immersion Research Articles

Professional adaptation of university students in the changing world of professions

Introduction. The relevance of the problem of the article is determined by the need to improve approaches to the professional adaptation of university students in the conditions of rapid changes in the world of work and professions. The subject of the study is various forms of professional adaptation of students.Aim. The present research aims to identify the forms of university students’ professional adaptation, which have the greatest potential for adapting students to the future profession. The hypothesis of the study was the assumption that one of the new and effective forms of professional adaptation of students at the university can be their project activities.Methodology and research methods. The research methodology was mainly based on the community-based and activity-based approaches. The empirical basis of the article is the results of the research on the adaptation of students in Russian universities (2022 May–June). The conducted research was implemented using the methods of online survey, focus group, semi-formalised interview.Results. The main results of the study are the following: characteristics of the forms of professional adaptation of students at the university, the assessment of its main background factors, as well as the development by students of the norms of the academic environment as a predictor of mastering work and professional ethics, the problems of implementing project activities as a new form of adaptation to the profession. The scope of application of the research results is the practice of university project training and the development of programmes for professional students’ adaptation.In conclusion, project-based learning is considered as one of the most promising forms of students’ professional adaptation, the potential of which is not fully used. An important conclusion of the authors is that there is the need to focus student projects on an external customer in order to create a situation of students’ real immersion in the professional environment.Scientific novelty. The authors considered new forms of professional adaptation of students at the university and justified the significance of the revealed adaptation forms.Practical significance. The practical significance of the article is the possibility of using the results and conclusions of the study in the elaboration of university adaptation programmes for students and the improvement of their professional adaptation practices.

EURO-INTEGRATION PARADIGM OF IMPLEMENTATION OF INNOVATIVE TECHNOLOGIES IN THE PROCESS OF DEVELOPMENT OF EMOTIONAL INTELLIGENCE OF FUTURE SPECIALISTS IN THE CONDITIONS OF DISTANCE EDUCATION

The scientific article is devoted to the analysis of the features of the integration of innovative AR/VR-technologies in the process of developing the emotional intelligence of future specialists in the conditions of European integration changes and approaches to training a competitive specialist. The article analyzes the main models and approaches to determining the functional role of emotional intelligence in the process of performing professional tasks. The work details the main vectors of introducing the components of augmented reality both in the educational and cultural space and in the scientific and research plane. An analysis of the features and factors of the implementation of AR/VR-technologies in the context of the implementation of the competence approach in higher education and modern research on the impact of augmented reality on the emotional states of the individual and the educational process in the conditions of distance learning was carried out. The article describes the experience of the complex implementation of elements of augmented reality in the program for the development of emotional stability of future specialists, which was implemented as part of the certification program for future specialists in socionomic professions “Self-management: development of the professional and personal potential of an individual”, which was implemented using the MOODLE system in conditions of distance learning. The implementation of augmented reality components into a complex program was based on the implementation of the MARE methodology. The described experience of cooperation between applicants and teachers on the basis of the Laboratory of Psychophysiological Research, the Laboratory of Health Psychology and the STEM-Laboratory of Melitopol State Pedagogical University named after Bohdan Khmelnytskyi stands out as innovative in the research. Within the framework of the corresponding concept of cooperation, an integrative approach in the process of developing the emotional intelligence of an individual, which is based on a complex combination of traditional psychodiagnostic and training technologies with innovative AR/VR technologies, has been developed and implemented. According to the results, it was found that the implementation of a psychocorrective program with elements of AR technologies helped to increase the level of development of the components of emotional intelligence of the individual. The introduction of elements of AR/VR-technologies into the educational process provides an opportunity to deeply influence the emotional world of an individual, the possibility of visualization and reproduction of certain emotional states, the possibility of close to real immersion in one’s own emotional world, its active cognition and the development of emotional self-regulation, stress resistance and the ability to understand emotional another person’s world.

Assessment of the environmental compatibility and antifouling performance of an innovative biocidal and foul-release multifunctional marine coating

The control of marine biofouling has raised serious environmental concerns, thus the continuous release of toxic and persistent biocidal agents applied as anti-biofouling coatings have triggered the search for non-toxic strategies. However, most of them still lack rigorous evaluation of their ecotoxicity and antifouling effects under real scenarios and their correlation with simulated assays. In this work, the biocide releasing risk and ecotoxicity of a biocidal and foul-release polydimethylsiloxane (PDMS)-based marine coating containing grafted Econea biocide (<0.6 wt.%) were evaluated under simulated real mechanical wear conditions at a pilot-scale system, and under extreme wear scenarios (washability settings). The coating system demonstrated low environmental impact against the model Vibrio fischeri bacterium and marine algae, associated with the effective biocide grafting in the coating matrix and subsequent biocide release minimization. This multifunctional coating system also showed auspicious antifouling (AF) effects, with an AF performance index significantly higher (API > 89) than a single foul-release system (AF < 40) after two and half years at a real immersion scenario in the Portuguese shore of the Atlantic Ocean. These field results corroborated the antibiofilm performance evaluated with Pseudoalteromonas tunicata at simulated dynamic marine conditions after seven-week assays. This eco-friendly multifunctional strategy, validated by both simulated testing conditions and real field tests, is believed to be a powerful tool for the development of AF technologies and a potential contribution to the quest for new environmentally friendly antifouling solutions.

Aplicação de técnicas de gestão de projetos no desenvolvimento e aprimoramento de um festival multicultural alternativo sem fins lucrativos no Brasil

Devido à crescente expansão do cenário cultural independente no Brasil, surgem, a cada dia, diferentes formas de expressar e representar essas demandas que brotam no âmago da sociedade, ramificando-se em diversos expoentes, dentre os quais, existem os festivais multiculturais. O meio da contracultura não tem como objetivo principal a geração de lucro, devido a esta característica, configura-se uma deficiência de gestão, onde controle e planejamento não são tidos como fatores críticos no desenvolvimento destes festivais. O objetivo desta pesquisa visa identificar as melhores técnicas para aplicação na gestão de projetos para o desenvolvimento e aprimoramento de um festival multicultural alternativo sem fins lucrativos. Este estudo foi ambientado na busca desta meta através da imersão real no desenvolvimento e acompanhamento de dois festivais no estado do Rio Grande do Sul, assim como a aplicação e interpretação de um questionário respondido por 60 organizadores de diversos festivais em todo o território Brasileiro. Foi possível delinear o perfil de gestão nos festivais multiculturais, assim como seus desafios internos e externos. Apesar de enfrentar dificuldades iniciais, o objetivo foi alcançado e a aplicação das ferramentas nos festivais acompanhados obteve grande êxito com resultados altamente positivos e ganhos para os organizadores, aumentando a qualidade, controle e autonomia quanto a produção dos eventos.

Geomatics Techniques for Submerged Heritage: a Mobile App for Tourism

The tourism sector is one of the major industries in Italy that has a high impact on local communities in terms of employment and economy. To show the results of a research project highlighting the use of new technology in the tourism sector, the Geomatics Laboratory of the Mediterranea University of Reggio Calabria has developed a mobile application for tourism. The case study is "Calarcheo Park", a nonaccessible underwater archaeological park located in Reggio Calabria, near the remains of the old walls of the ancient city of Reggio Calabria (Reghion, dating back to about the VIII B.C.). The main aim of this paper is to describe the process to relive and re-propose the experience of a real immersion through a journey in virtual reality. Particular attention was given to the research part concerning the simplification processes of the models inserted within an app for tourism sector. The concept app includes scenarios (seabed) and objects (Castle and artefact) obtained from three-dimensional models realized through photogrammetric techniques, therefore "heavy" models in terms of space necessary to store them, recall them and possibly process them. Considering the visualization purpose, and the metric precision needed, the 3d models were reconstructed using a rapid method. To minimize the difficulties during the direct underwater survey carried out by a human operator (e.g. limited time available during the survey, accentuated inaccuracy due to human errors), the operations were carried out using an experimental ROV (Remote Operated Vehicles), widely used to explore underwater environments, equipped with cameras to perform photogrammetric acquisition in a single dive. To enhance the results and quality of the 3d model, a procedure to improve the image quality, and optimizing the processing is also described. This work therefore illustrates the possibilities of using 3D models created by geomatics techniques within virtual environments for apps for tourism purposes

$$L^p$$ harmonic 1-forms on totally real submanifolds in a complex projective space

Let $$\pi : {\mathbb {S}}^{2n+1}\rightarrow {\mathbb {C}}P^n$$ be the Hopf map and let $$\phi$$ be a totally real immersion of a $$k(\ge 3)$$-dimensional simply connected manifold $$\Sigma$$ into $${\mathbb {C}}P^n$$. It is well known that there exists an isotropic lift $${\overline{\phi }}$$ into $${\mathbb {S}}^{2n+1}$$ preserving the second fundamental form. Using this isotropic lift, we obtain a vanishing theorem for of $$L^{p}$$ harmonic 1-forms on a complete noncompact totally real submanifold in a complex projective space provided the $$L^k$$ norm of the traceless second fundamental form $$\Phi$$ is sufficiently small. Moreover, we prove that if the $$L^k$$ norm of $$\Phi$$ is finite, then the dimension of $$L^p$$ harmonic 1-forms on a complete noncompact totally real submanifold in a complex projective space is finite. As consequences, we obtain a vanishing theorem and a finiteness result for $$L^2$$ harmonic 1-forms on a complete noncompact minimal Lagrangian submanifold in a complex projective space.

Research on 3D architectural scenes construction technology based on augmented reality

This paper presents a framework of architecture scene based on augmented reality, which can help designers to analyze and evaluate the design scheme at the early stage of architecture design. First, we used Revit to construct the 3D architectural model, and then we extracted the scene feature points with AKAZE algorithm, and applied the visual vocabulary tree to identify the architectural scene. Finally, the monocular SLAM technology was used to register the virtual 3D building model of the real outdoor scene, and the architecture scene construction system based on augmented reality was implemented. The experimental results show that the proposed framework has the characteristics of a real immersion and easy spread and can help designers to make a more reasonable evaluation of the architectural design scheme.

Influence of Carbon Nanotubes‐Based Coatings on the High‐Temperature Compression Strength of Al2O3‐C Foam Filter Structures

Materials for steel‐melt filtration have to fulfill different thermomechanical requirements and especially withstand the thermal shock attack in the beginning of casting. In particular, carbon‐bonded alumina materials provide an excellent thermomechanical performance and have been used in functional components such as submerged entry nozzles, stoppers, and sliding gates for several years. The present study investigates the mechanical high‐temperature behavior of Al2O3‐C foam filter structures with coatings based on carbon nanotubes+Al2O3‐nanosheets (CNT‐ANS) and carbon nanotubes+Al2O3‐nanospheres (CNT‐ANB) at 1100 and 1450 °C. The foam filters are tested in an electromechanical testing machine under argon atmosphere in quasi‐static compression. The tests show a brittle material behavior at 1100 °C with higher compressive strength of the coated filter samples. At 1450 °C, a loss of strength occurs, accompanied by an increase in plastic deformation. Rupture of struts and behavior of the coatings are microstructurally analyzed by scanning electron microscopy. As the mechanical load during the tests is much longer than in real immersion tests, the high‐temperature performance is considered trustworthy.

THE SUBMERGED HERITAGE: A VIRTUAL JOURNEY IN OUR SEABED

Abstract. On 21 and 22 August 1972, a young diver near the coast of Riace Marina (South Italy) found two bronze statues representing one of the highest moments of the sculptural production and the most important archaeological discovery of the last century: the Riace Bronzes. The Geomatics Laboratory of the Mediterranean University of Reggio Calabria sets a goal to relive and re-propose the experience of a real immersion and the exciting moment of the discovery: an immersive journey in the interest of interactivity in virtual reality. Immersive Virtual Reality tries to combine the real and the virtual world, even involving our senses. In other words, it allows us to enter into the scenery like the virtual reality one, but without being just simple spectators. We become protagonists and we can participate and decide what to do and how to do it. Unity 3D is the multi-platform development environment used. The scenarios and the objects included in the scene from three-dimensional models were realized through photogrammetric techniques (seabed and bronzes). Remote Operated Vehicles (ROVs) have been widely used in recent times by researchers to explore underwater environments, both in shallow and deep water, for different types of studies. The seabed was detected through the aid of an experimental ROV (realized in a broader project of agreement with the IPCF CNR Messina). The use of a grid of known dimensions assisted the ROV’s use in order to correct the effects of distortion effects obtained in water. The proposed app is still being perfected and completed.

A study on the durability of structural concrete incorporating electric steelmaking slags

The durability of structural concrete mixes prepared with electric steelmaking aggregates is tested for use in normal and aggressive environments. Samples of “pumpable” and “self-compacting” concrete mixes are shown to have good physical characteristics, mechanical properties and dimensional stability. The mixes were subjected to severe freezing-thawing and drying-wetting tests up until deterioration, to assess their resistance to inland environments. Real immersion in the tidal zone of a harbor and laboratory tests on reinforcement bar corrosion were also performed to evaluate the quality and utility of this sort of concrete in marine environments. The behavior of the mixes in these exposure tests was satisfactory, confirming their suitability for use in structural applications exposed to different environments.

Semi-Parallel, Semi-Symmetric Immersions and Chen’s Equality

Recently, B. Y. Chen introduced a new invariant δ(n1,n2,…,nk) of a Riemannian manifold and proved a basic inequality between the invariant and the extrinsic invariant if, where H is the mean curvature of an immersion Mn in a real space form Rm(e) of constant curvature e. He pointed out that such inequality also holds for a totally real immersion in a complex space form. The immersion is called ideal (by B. Y. Chen) if it satisfies the equality case of such inequality identically. In this paper we classify ideal semi-parallel immersions in an Euclidean space if their normal bundle is flat, and prove that every ideal semi-parallel Lagrangian immersion in a complex space form is totally geodesic, moreover this result also holds for ideal semi-symmetric Lagrangian immersions in complex projective space and hyperbolic space.

Linking Class of Lagrangian or Totally Real Embeddings

Given a totally real embedding j of the 2-torus \(\mathbb{T}^{\text{2}}\) into ℂ2, one defines a 1-class σ1 – its linking class – which is a tool to detect arcwise connected components of the space of totally real embeddings EmbTr(\(\mathbb{T}^{\text{2}}\), ℂ2). We generalize the construction of the linking class to any totally real embedding j of a connected, oriented, compact manifold without boundary Mn into ℂn. We obtain an (n − 1)-class σn− 1 which is still an invariant for isotopy classes of totally real embeddings. We show that this class is nontrivial by computing it for some families of totally real embeddings. We then study the relationship between isotopy classes of ordinary embeddings and the linking class. With additional assumptions on Mn (n ≥ 4 and Mn parallelizable) we obtain the following: two totally real embeddings of Mn into ℂn which belong to the same isotopy class of totally real immersion, belong to the same isotopy class of ordinary embedding if and only if (1) their linking classes are the same (if n odd); (2) the images of their linking classes by the coefficient homomorphism μ: Hn− 1 (Mn, ℤ) → Hn− 1 (Mn, ℤ2) are the same (if n even).

On totally real spheres in complex space

Let M ,N be two totally real and real analytic submanifolds in Cn . We say that M and N are biholomorphically equivalent if there is a biholomorphic mapping F defined in a neighborhood of M such that F (M ) = N . As a standard fact of complexification, one knows that all totally real and real analytic embeddings of M in C n are biholomorphically equivalent if M is of maximal dimension n . However, the topology of the manifold plays a major role in the existence of totally real immersions or embeddings. For instance, R.O. Wells [23] proved that if an n-dimensional compact and orientable manifold M admits a totally real embedding in Cn , then its Euler number must vanish. It was also observed by Wells that if M is a manifold of dimension n and it admits a totally real immersion in Cn , then its complexified tangent bundle T cM = TM⊗C is trivial. Conversely, the triviality of T cM also implies the existence of totally real immersions of M in Cn . This was obtained by M.L. Gromov in [11] through the method of convex integration. A stronger result due to J.A. Lees [17] says that M also admits Lagrangian immersions in Cn . The sphere S k : x 2 1 + . . . + x 2 k+1 = 1 in R k+1 gives us a trivial totally real embedding of S k in Ck+1. On the other hand, the works of Gromov [11], AhernRudin [1] and Stout-Zame [21] tell us that S k admits a totally real and real analytic embedding in Ck if and only if k = 1, 3. Our main result is the following. Theorem 1.1. If k ≤ 4, all totally real and real analytic embeddings of S k in Cn are biholomorphically equivalent. If k ≥ 5 and nk = k + 2[ k−1 4 ], there exist totally

An exotic totally real minimal immersion of S3 in ℂP3 and its characterisation

In a previous paper, B.-Y. Chen defined a Riemannian invariant δ by subtracting from the scalar curvature at every point of a Riemannian manifold the smallest sectional curvature at that point, and proved, for a submanifold of a real space form, a sharp inequality between δ and the mean curvature function. In this paper, we extend this inequality to totally real submanifolds of a complex space form. As a consequence, we obtain a metric obstruction for a Riemannian manifold Mn to admit a minimal totally real (i.e. Lagrangian) immersion into a complex space form of complex dimension n. Next we investigate three-dimensional submanifolds of the complex projective space ℂP3 which realise the equality in the inequality mentioned above. In particular, we construct and characterise a totally real minimal immersion of S3 in ℂP3.

A computer model for wetting hysteresis 2. A virtual wettability scanning balance

We described previously a computer model for wetting hysteresis based on a theoretical analysis of the Wilhelmy wetting experiment. Applying this model to a number of virtual surfaces, we demonstrated that surface heterogeneity causes hysteresis in the wetting trace of an otherwise perfect solid. We now develop a model for the two-meniscus case to emulate liquid membrane wetting. This experiment scans a suspended solid specimen with a film of liquid contained in a loop attached to a vertical drive. After showing how variations in the size and proportion of surface energy domains affect the appearance of virtual wetting traces, we estimate the proportion of the surface covered randomly by two materials having different wettabilities, using real immersion and liquid membrane wetting data. The traces produced by the two models match the measured traces well. We are also able to mimic the effect of macroscale heterogeneity superimposed on surfaces featuring wetting hysteresis caused by microscale heterogeneity, specifically, fibers with non-uniform applications of finishing agents.

On slant immersions into Kähler manifolds

Let φ: M-*N be an isometric immersion of a Riemannian manifold into an almost Hermitian manifold with almost complex structure /. Then, φ is called slant if the angle between jφ*(X) and <p*(TpM) is constant for any X^TPM and any p^M. The typical examples of slant immersions are Kahler immersions and totally real immersions, where the slant angles are 0 and π/2, respectively. A slant immersion is called proper if it is neither a Kahler immersion nor a totally real immersion. In the case where M is a Riemann surface and N is a Kahler manifold, the slant angle was introduced as the Kdhler angle and studied by S. S. Chern and J. G. Wolf son [CW]. Examples of slant immersions of a Riemann sphere S into a complex projective space CP were given as the Veronese sequence of harmonic maps from S, which are classified in [BO] and [BJRW] in the case where S has constant curvature (see also [01]). The present concept of slant immersion was first introduced and studied by B. Y. Chen [C]. The examples of proper slant immersions into C are given in [C-T], Recently, Tazawa [T] has given examples of slant immersions into C with any given slant angle. However, there are a few results on slant submanifolds in CP. In this case, any general method to check whether given an immersion is slant or not is not known.