Kinematic projection in modern technologies

The trajectories and coordinates of unmanned aircrafts spatial location determination is researched with the help of kinematic projection means. The methodology offered below considers the formation of two mobile and independent kinematic projection centers raised into the air by drones. The electromagnetic radio waves emitted by them, penetrating an unknown aircraft object, form two independent projecting rays intersecting at the searched aircraft location point. In this case, the searched object spatial location instantaneous (at a certain point in time) point will be placed on an imaginary “picture plane” on a line connecting the points projections generated by drones interceptors projecting rays. As far as all of the projection objects in this case are movable, all the moving trajectory projection of the searched aircraft will be displayed on the monitor. The introduction of another “picture plane”, perpendicular to the main one, will help to build an axonometric mapping not only for projections, but also for the aircraft spatial movement trajectory itself. Each point of this trajectory gives an information about the “instantaneous” coordinates of the aircraft spatial location. The method of application of kinematic projection for display of a trajectory of movement and search of coordinates of moving objects is described. In kinematic projection, all its key components, namely the object, the center of projection, the image plane and the projecting rays, are in continuous motion with certain speeds and accelerations. Kinematic projection deepens the field of practical application of descriptive geometry. This is confirmed by the example of practical application of kinematic projection presented in the article for improvement of remote control of tillage equipment in automated land treatment complexes. The main technical support for the practical application of kinematic projection are stationary radio towers or unmanned aerial vehicles (BPLA), such as drones. They are equipped with video cameras and electromagnetic radiation devices. This equipment serves as a center of kinematic projection. The projecting rays generated by the projection center will be received by a stationary command post (center). It is equipped with a radar system (radar) and modern computer equipment with appropriate software. This equipment, in this case, performs the function of a “picture plane”, which will reflect the trajectory of agricultural machinery. Actuators and controls of the movement of tillage equipment are equipped with receivers of control radio waves and means of automated control. The use of kinematic projection helps to improve the quality of tillage. This is ensured by the fact that its use is carried out automatically and eliminates possible errors of operators. Kinematic projection can also be used in military affairs to detect enemy drones in the airspace. In this case, use a kind of kinematic projection with its two centers of generation of projecting rays. This is an example of the solution of the so-called “inverse problem” of kinematic projection, which provides the ability to search for the coordinates of the motion of the projected object at a known trajectory of its motion. The main advantage of kinematic projection is the ability to identify and display an object on a computer screen not only in a flat view, but also taking into account its spatial coordinates.

WAYS OF EXPRESSING THE SUBJECT IN THE AVAR LANGUAGE

This article is devoted to the ways of expressing the subject in the Avar language, in which case word forms expressing subjective actions are singled out as the subject. In the Avar language, the subject, predicate and direct object form the basis of a three-part sentence of transitional semantics and a two-part sentence of intransitive semantics. The subject is coordinated with the predicate verb in class and number.

Strange nominative case in topicalized object pronominal relative clauses

In an online production experiment, we investigated the effect of sentence position on the preference for either a nominative or object form of an object pronoun restricted by a relative clause in Dutch. Results show a significant preference for the nominative form of the restricted object pronoun in sentence-initial position as it was chosen in 95% of the cases. In the original object position this percentage is only 20%. The preference for a nominative pronominal object is considered a grammatical norm violation. We account for this in terms of a combination of two factors. First, the presence of the relative clause makes the object ‘long’. Second, the sentence-initial position is a syntactic position that is relatively far removed from the original object position. We argue that when a long object is topicalized, there are too many intervening elements between the pronoun and the verb of which it is the complement. If the distance between the pronominal object and the verb has become too long, the object case fades from the working memory. This then results in the appearance of nominative case as the default case for topicalized object pronominal relative clauses in Dutch.

Coloured Light as a Tool for Working with Architectural Form in the Night Environment of the City

For the past decades the light environment of the evening city has become a critical component of the architectural and administrative activities. Today, the lighting systems not only allow making an object or an entire street ‘visible’ in the evening, but also provide for the development of their new architectural image. The opportunities offered by the white artificial light were appreciated to work with the illuminated polychrome objects long ago. The white light with various spectral properties is capable sometimes to influence dramatically the perception of the architectural form, as with its high intensity under the darkness adaptation conditions it has the capability to ‘absorb’ (turn off) the ‘object’ colour of the illuminated facade surface. In particular, the specifics creates an ‘evening’ object image different from the daily one, where the colour scheme used in the material object is often not critical. In contrast, the chromatic light under certain conditions allows not only maintaining the colouristic nature of the environment existing under the natural lighting conditions, but also developing and unifying it in a unique manner, creating a new colour palette. The description of the main areas of the evening environment arrangement with the chromatic light is provided. A significant work experience has been already accumulated in this field by the light design experts. The colour light opportunities and, even more so, the technologies of dealing with it have not been appreciated and adopted by architects to the full extent yet. The article considers the application specifics of the colour light as a fully functional instrument for dealing with the object form under the night urban conditions. The results of an experiment to study the interaction between the colour of material objects and the colour light based on the analysis of Moscow polychrome, which was carried out in the laboratory of the Moscow Architectural Institute (State Academy), are presented. Visual observations enabled to determine the impact of light with the colour light filters selected for the experiment on the colour samples typical for a number of historical periods in the Moscow architecture. The colour samples typical for the facades of buildings erected in a number of historical periods in the capital architecture were illuminated in the darkness with the light of slide projectors with IL and R, G, B glass light filters, and changes in their visual perception were assessed using the NCS atlas, then the identified colour shifts were determined with the use of E. Rabkin’s atlas by three parameters (λ, P, L). A hypothesis was expressed about the possible use of the results of such studies not only in the architectural colour lighting of the modern urban environment, but also in such a new application area as restoration, preservation and interactive integration of the historical and architectural heritage sites into the programmable image-bearing environment.

Effects of stereopsis on vection, presence and cybersickness in head-mounted display (HMD) virtual reality

Stereopsis provides critical information for the spatial visual perception of object form and motion. We used virtual reality as a tool to understand the role of global stereopsis in the visual perception of self-motion and spatial presence using virtual environments experienced through head-mounted displays (HMDs). Participants viewed radially expanding optic flow simulating different speeds of self-motion in depth, which generated the illusion of self-motion in depth (i.e., linear vection). Displays were viewed with the head either stationary (passive radial flow) or laterally swaying to the beat of a metronome (active conditions). Multisensory conflict was imposed in active conditions by presenting displays that either: (i) compensated for head movement (active compensation condition), or (ii) presented pure radial flow with no compensation during head movement (active no compensation condition). In Experiment 1, impairing stereopsis by anisometropic suppression in healthy participants generated declines in reported vection strength, spatial presence and severity of cybersickness. In Experiment 2, vection and presence ratings were compared between participants with and without clinically-defined global stereopsis. Participants without global stereopsis generated impaired vection and presence similarly to those found in Experiment 1 by subjects with induced stereopsis impairment. We find that reducing global stereopsis can have benefits of reducing cybersickness, but has adverse effects on aspects of self-motion perception in HMD VR.

Facing Change and Changing Masks

The primary focus of this chapter is the fixed-form mask in its many manifestations, beginning with ‘Death Masks Re-membered’. The difference between performance masks and death masks is theorised, including a discussion of photographs of the death masks of notable figures. The fascination of modernist painters with African masks in British, French and German museums is discussed with reference to the Picasso Primitif exhibition (2017) and to the history of anthropological exhibitions of the ‘savage’ during the early years of Modernism. Indigenous masquerade is further explored by commentary on photographic portraits of the ‘other’, with consideration of the rapport between subject and photographer. Painted images of the mask object and disguised individuals by Paul Cézanne, James Ensor, Émil Nolde and Pablo Picasso are contrasted with Edward Sheriff Curtis’s photos of Native American masking. Modernist innovations in masquerade, like the dance scenography of Loïe Fuller, highlight alternative methods of changing the body image, as well as transforming the human figure into a part-object form (an aspect exhibited also in a painting by Margaret Macdonald Mackinstosh). Modernist Pierrots in Berlin, Copenhagen and St Petersburg, for example, suggest that playful disguise was an almost-universal impulse in Modernism across Europe and the United Kingdom.

Making Object Shape Explicit for Toddlers With Late Language Emergence

Purpose Toddlers with late language emergence have difficulty acquiring an object vocabulary that is well defined by shape early in development. Without object words, subsequent language growth is delayed. The current study tested an intervention scaffold that highlights object shape during word teaching so that toddlers with late language emergence may establish themselves in the early stages of object word learning. Method Four toddlers with late language emergence participated in a brief dose of two interventions that differed only in semantic scaffold—a co-speech shape gesture or a co-speech indicator gesture. Co-speech refers to the word model and gesture occurring simultaneously. Shape gestures explicitly conveyed object form, whereas indicator gestures directed attention to the object. A single-subject experimental design tracked naming of taught objects and untaught exemplars. The study compared the mean number of phonemes produced in names between conditions. Results The four participants (a) extended more names to novel exemplars, (b) named more exemplar types, and (c) named more exemplar tokens when learned with shape gestures than with indicating gestures. The shape gesture advantage was confirmed with “percentage of nonoverlapping data” analysis. Not only did the shape gesture increase naming over the indicator gesture but more sounds were also mapped on average in the shape condition. Conclusion The current study used a semantic approach to the word learning problem in toddlers with late language emergence. We conclude that co-speech shape gestures led to semantic enrichment and facilitated phonological binding of the word representation. Future experiments should focus on a component analysis in parent-implemented interventions for greater carryover in the child's natural environment (i.e., external validity).

Cloud web-technology for contest procedures organization for quality of educational resources estimation

Problem and goal. The article represents the description, model and result of the development of application software available on the Internet to automate the organization of competitive procedures. The relevance of the creation of automated systems for assessing the quality of educational resources is due to the need to ensure the availability and efficiency of evaluation and competitive procedures in educational institutions. Methodology. The study is aimed at the design and development of a cloud portal-designer, which allows to automate competitive activities in educational institutions. In contrast to the existing similar developments, the created system represents the applied software for creation and carrying out competitive actions in educational institutions. Results. The work is of practical value for educational institutions of all levels and individual communities in need of automated systems of competitive evaluation of educational resources. Conclusion. For the first time, a projective cloud environment for automating the assessment of the quality of educational resources that have an object form (digital educational resource, teacher activity, information system, information environment, lesson, etc.) is proposed, and for which it is possible to build a criterion model of quality.

ФОРМА ЯК ЗАСІБ СТВОРЕННЯ ХУДОЖНЬОГО ОБРАЗУ В АРТ-ДИЗАЙНІ

Purpose. Disclosure of decorative and functional features of forms of art object and analysis of their creative and aesthetic content. Methodology. In the course of the research, the purpose of field surveys and generally scientific methods of analysis, synthesis and analogies were used. Results. As a result of a theoretical study, the primary stages of art-form object formation are determined; its characteristic features and peculiarities of ideological and ideological ideas and creative language are revealed. The close relationship between form and content, which forms an imaginative, symbolic, spiritual and aesthetic art object with the emotional power of influence and impression, is considered. Scientific novelty. The article analyses and explores the peculiarities of creating an art object form to convey an artistic image and an author's idea. The features and stages of forming an art object form as a complex, multifaceted phenomenon are presented, which allows becoming more aware of its functional, material and artistic features. Practical significance. Research findings can be used as promising areas for research in design theory and practice. The main defining features and features of building an art object can be applied directly in the creative work of designers.

Comprehensive In Vitro Testing of Calcium Phosphate-Based Bioceramics with Orthopedic and Dentistry Applications

Recently, a large spectrum of biomaterials emerged, with emphasis on various pure, blended, or doped calcium phosphates (CaPs). Although basic cytocompatibility testing protocols are referred by International Organization for Standardization (ISO) 10993 (parts 1–22), rigorous in vitro testing using cutting-edge technologies should be carried out in order to fully understand the behavior of various biomaterials (whether in bulk or low-dimensional object form) and to better gauge their outcome when implanted. In this review, current molecular techniques are assessed for the in-depth characterization of angiogenic potential, osteogenic capability, and the modulation of oxidative stress and inflammation properties of CaPs and their cation- and/or anion-substituted derivatives. Using such techniques, mechanisms of action of these compounds can be deciphered, highlighting the signaling pathway activation, cross-talk, and modulation by microRNA expression, which in turn can safely pave the road toward a better filtering of the truly functional, application-ready innovative therapeutic bioceramic-based solutions.