Picture Changes Research Articles

How the image drawing method can act as an alternative barometer of librarian instruction


 
 
 Previously, I examined changes in pictures of school libraries drawn over time by university students in a teacher training program taking a course on the importance of school libraries. The results revealed an increased tendency to depict librarians; even so, librarians featured in only 12 of 32 pictures. This study compares my results with those for similar teacher and teacher librarian courses by other teachers and (in most cases) at other universities. Besides my course, only 1 of 15 other courses revealed an increased tendency to draw a librarian, with no significant differences in proportion of students who depicted librarians among the courses, revealing that my lectures successfully communicated the importance of school librarians. Also, 4 of 11 courses that focused on information media revealed an increased to draw PC(s). These results show that the image drawing method may suffice as an alternative barometer for librarian instruction.
 
 

Effects of rotational conformation on electronic properties of 4,4′-bis(carbazol-9-yl)biphenyl (CBP): the single-molecule picture and beyond

ABSTRACT 4,4-bis(carbazol-9-yl)biphenyl (CBP) is a commonly used hole-transport host material in phosphorescent organic light-emitting devices (PhOLEDs). Despite its widespread use, device degradation is observed that most likely involves excited states and ionic species. The present work aims at providing a first step towards a detailed CBP characterisation by computing excited-state properties and ionised species of CBP using time-dependent density functional theory (TD-DFT) and the Bethe-Salpeter equation (BSE) based on the GW method. The investigation reveals a strong dependence of the absorption spectrum on the interactions of the phenyl and carbazole units, which is computed for 1.6 k ground-state rotamers using the efficient GW-BSE method. A similar approach using a set of 1.6 k excited-state rotamers shows a significantly smaller dependence on fragment orientation for emission. In order to model ensembles of gas-phase CBP molecules, spectra are simulated employing a Boltzmann distribution for different temperatures based on the relative ground-state energies of the rotamers. This approach reveals that certain absorption bands experience almost no change in the ensemble picture while others vanish, which can be understood in terms of the geometry-dependence of the excited states due to the phenyl-carbazole interactions.

Innovative technologies in merchandising

The article summarizes and systematizes modern high-tech digital tools that allow modeling the behavior of a modern consumer and ensuring the efficiency of the functioning of trade enterprises by increasing sales. It has been established that merchandising has an impressive arsenal of high-tech tools, which include: projection showcase, interactive showcase, virtual shelf, 3D showcase, Aislelabs and Prism Skylabs devices, mobile applications, Fetch Robotics and Lowe's robots, ERP system, Amazon Prime Air system, etc. A projection showcase is a showcase glass (screen) covered with a special film (opaque, translucent or completely transparent) of rear projection. A projector is installed behind the screen, which transmits an image to the screen, which is clearly visible from the outside. An interactive showcase (interactive wall, touch showcase) is a video screen that interacts with a person; most often, they use multitouch technology (touch showcases) and contactless sensor technology (Kinect showcases). A virtual shelf is an LCD panel or video wall, with a Kinect system attached to the back, which “reads” human movements and allows you to control the system from a distance. The 3D showcase is an electronic counter with technology that allows 3D images to be literally projected in the air, combined with motion sensors. The motion sensor allows the showcase to react to the trajectory of passers-by, that is, the showcase is static as long as no one walks past it, and as soon as the sensors detect the movement of a person in the reach, the showcase comes to life, the colors, lighting, picture change. Digital technologies in retail are a new interactive advertising tool for attracting and retaining customer attention. Due to the effect of surprise inherent in all interactive solutions in advertising, virtual showcases (interactive walls) attract attention, keep the visitor for a long time, stimulate to make a purchase or receive information.

A multi-objective Optimisation Approach to Explore Decarbonisation Pathways in a Dynamic Policy Context

Climate policy is changing fast in the European Union, with country leaders raising the bloc’s ambition to reduce greenhouse gas emissions by 2030 and 2050. However, there is uncertainty about the allocation of decarbonisation effort between EU member states. This paper develops a multi-objective optimisation framework to provide insights to decision makers in this policy context by exploring trade-offs between stronger decarbonisation goals and higher costs. Applying this approach we find that, unless the 2030 policy objective is very ambitious, small changes in emission abatement do not entail large changes in costs. The picture changes when decision-making explicitly accounts for external costs of emissions of greenhouse gases and air pollutants in the optimisation procedure. In this case the costs to comply with a specific 2030 target rise faster the more ambitious the target becomes, but most decisions lead to negative social costs, which means that decarbonisation will be beneficial to the national economy. We also address the required level of investments and public expenditures for implementing specific policy mixes and the attainability of climate neutrality by 2050 as pledged by the EU. Although the modelling framework has been developed for a specific country and is tailored to the specific EU policy circumstances, the proposed methodology is entirely suitable for other world regions with a demanding decarbonisation roadmap.

Genetic polymorphism under cyclical selection in long-lived species: The complex effect of age structure and maternal selection

Maternal selection and overlapping generations can facilitate the stable coexistence of alleles under temporally fluctuating environment. Using mathematical models, we considered the complex effect of both factors on the maintenance of genetic polymorphism in cyclically changing environments. We concentrated on asymmetric cyclic selection, which allows describing fluctuations of environments by analogy of food resources cycles with rare peaks and prolonged decline of prey abundance.The complex effect of maternal selection and overlapping generations turned out to work as follows: although overlapping generations always tend to dilate the polymorphism region, odd and even external cycles produce different types of polymorphism regions. Maternal selection under external odd cycles extends the coexistence region comparing with classic selection. Even cycles produce a part of parameter region, where the picture changes radically, and classic selection becomes more effective in maintaining polymorphism.Our models have clear biological interpretation, because we tried to model a situation demonstrated by natural populations of arctic foxes. The litter size being a major life history trait is a sex-limited female trait. It is influenced by maternal selection with cyclical fluctuations because of oscillations in food abundance. Arctic fox is a long-lived species having an age structure. The obtained results showed that compared with the simple Mendelian inheritance in the classic model, this trait inheritance allows polymorphism to be maintained in a wider range of the parameter that characterizes the advantage of survival in a small litter. Besides, adding overlapping generations to the model further broadens the parameter space for the protected polymorphism. Thus, this study shows that maternal selection and overlapping generations increases the chances of maintaining polymorphism in populations of arctic foxes.

The EFT likelihood for large-scale structure in redshift space

We study the EFT likelihood for biased tracers in redshift space, for which the bias expansion of the galaxy velocity field v⃗g plays a fundamental role. The equivalence principle forbids stochastic contributions to v⃗g to survive at small k. Therefore, at leading order in derivatives the form of the likelihood \U0001d4ab[̃δg|δ,v⃗] to observe a redshift-space galaxy overdensity ̃δg(̃x⃗) given a rest-frame matter and velocity fields δ(x⃗), v⃗(x⃗) is fixed by the rest-frame noise. If this noise is Gaussian with constant power spectrum, \U0001d4ab[̃δg|δ,v⃗] is also a Gaussian in the difference between ̃δg(̃x⃗) and its bias expansion: redshift-space distortions only make the covariance depend on δ(x⃗) and v⃗(x⃗). We then show how to match this result to perturbation theory, and that one can consistently neglect the field-dependent covariance if the bias expansion is stopped at second order in perturbations. We discuss qualitatively how this affects numerical implementations of the EFT-based forward modeling, and how the picture changes when the survey window function is taken into account.

Key dental challenges during COVID-19 pandemic: oral health monitoring in patients with chronic oral mucosal diseases

To develop an effective system of an interactive dynamic telemonitoring of oral health in patients with oral lichen planus (LP) during the COVID-19 pandemic. The observational longitudinal prospective cohort study (follow-up for 12 months) involved 53 patients (19 men and 34 women aged 49-65 years) with various forms of LP in persistent remission. During the entire observation period dentists carried out telemonitoring (through a Telegram group) of oral health of patients with LP registering the preservation/coming out from remission, as well as the causes of exacerbation of LP. The developed interactive monitoring system based on the use of available video feedback communication technologies (via Telegram, WhatsApp, Viber messengers) provided stable remission in 28.3% of patients with LP (mainly typical and hyperkeratotic forms) and effective relief of exacerbations (mainly erosive-ulcerative forms) associated with the new coronavirus infection COVID-19 in 35.8% of cases, exacerbation of concomitant systemic pathology (excluding COVID-19) in 16.9%, local traumatic risk factors in 15.1%, development of post-vaccination reactions in 3.9%. COVID-19-associated exacerbation of LP is a polymorphic symptom complex manifested by a change in classical clinical picture and heavier course of skin-mucosal dermatosis due to the addition of new, atypical for LP, manifested COVID-19-associated intraoral symptoms and generalization of skin lesions. Periods of exacerbation of LP in COVID-19 patients are significantly longer, with shorter remissions than in the prepandemic period. Interactive telemonitoring of oral health in patients with chronic oral mucosal diseases is a safe and effective tool for dispensary observation, management and maintenance of social communications during periods of social isolation.

Цитоморфологічні зміни паренхіматозних органів трупів котів у ранньому постмортальному періоді в аспекті судово-ветеринарної експертизи

The cytomorphological changes of a cat’s cadaver’s parenchymal organs in the early postmortem period in the aspect of forensic veterinary examination are established in the work. The aim of the work is to clarify the processes of necrobiosis at the cellular level under aerobic environment in the first day after the death of the animal as a cytomorphological criterion in terms of forensic veterinary examination in deciding the age of death in the early postmortem period. It is proved that the most dynamic cytomorphological changes are found in the spleen and pancreas tissue; cytoarchitectonics of liver, lung and heart tissue changes less intensively. Intense cytomorphological changes in kidney tissue and brain were not observed. It was found that parenchymal organs samples cytological research after the first day of the postmortem period to determine the cells histological topography is impossible. It was found that the cytoarchitectonics dynamics of kidney and brain tissue is uninformative to solve the problems of forensic veterinary examination, but the necrobiosis of liver, lung and heart cells is moderately informative. High informativeness of cytomorphological picture change in spleen and pancreas tissue has been established, as the intensity of cytomorphological changes dynamics and their informativeness to solve the question of the age of death are directly correlated. It is recommended to use the cytological rapid method as an additional in the practice of forensic veterinary examination to address the issue of animal death age in terms of its non-obviousness before the appearance of late cadaveric phenomena.

ОСОБЕННОСТИ ТЕЧЕНИЯ COVID-19 У ДЕТЕЙ РАЗЛИЧНЫХ ВОЗРАСТНЫХ ГРУПП

Materials and methods: a pilot open observational prospective study of 218 pediatric patients with laboratory-verified COVID-19 diagnosis was performed. The main epidemiological data were analyzed, including the age structure, as well as the features of the clinical course of this disease. The development of COVID-19 pneumonia was recorded in 11,5% of cases (25 patients), while more often pneumonia was recorded in children of the first year of life, as well as over 12 years of age (23,5% and 20% of cases, respectively) than in children of other age groups (p<0,05). CT-1 stage was recorded in 13 patients (52% of cases), CT-2 stage in 10 patients (40% of cases), CT-3 stage in 2 patients (8% of cases). The leading clinical symptoms of COVID-19 in children were: hyperemia of the mucous membranes of the pharynx – 100% of cases (218 patients); increased body temperature – 95,9% of cases (209 patients), while the average figures were 37,6 (36,6; 38,2)0 С; cough – 19,7% of cases (43 patients, of which 21 with pneumonia); diarrhea – 17,9% of cases (39 patients); vomiting – 6,4% of cases (14 patients); change in the auscultatory picture – 3,7% of cases (8 patients with pneumonia). In infants with COVID-19, diarrhea was more often recorded in comparison with patients in the age group over 13 years old (35% and 4% of cases, respectively; p=0,001). The development of cough was less often recorded in children of the first year of life, in Compared with patients over 13 years of age (9% and 40% of cases, respectively; p=0,004), the same trend was observed in COVID-19 pneumonia (25% and 89% of cases, respectively, p=0,02). Thus, the clinical picture of COVID-19 in pediatric patients is characterized by non-specific symptoms. There is a definite trend towards more frequent development of COVID-19 pneumonia in patients in the first year of life, as well as in puberty. Infants with COVID-19 pneumonia are characterized by a high incidence of atypical course of the disease, while adolescents are more likely to show a manifest clinical picture of COVID-19.

POLR3A-related hypomyelinating leukodystrophy: case report and literature review

Hypomyelinating leukodystrophies (HL) is a group of genetically heterogeneous neurodegenerative disorders characterized by a lack of brain myelin deposition. One of the most common autosomal recessive HL is HL type 7 caused by mutations in the POLR3A gene. We reported the first clinical case of a Russian patient with HL type 7.Proband is a 7‑year‑old patient with HL type 7. The diagnosis was confirmed by genealogy, neurological examination, brain magnetic resonance imaging and molecular genetic testing. Two compound‑heterozygous variants in the POLR3A gene were revealed in the patient. Each variant was described earlier in patients with variable clinical manifestations of neurodegenerative diseases. The peculiarities of clinical manifestations in our patient were the manifestation of the disease in the first year of life, the predominance of cerebellar symptoms, a movement limitation of the jaw, leading to worsening of dysarthria, a delay in the formation of permanent teeth and short stature. The course of the disease was moderate that could be explained by different effect of the variants in the POLR3A gene.POLR3A‑related disease is a group of clinically heterogeneous disorders manifesting from early childhood to adulthood and characterized by isolated spastic ataxia or ataxia combined with oligodontia and hypogonadotropic hypogonadism, isolated or complicated spastic paraplegia, as well as a combination of ataxia with extrapyramidal symptoms. Our case report demonstrates the complexity of diagnostic process in the absence of a peculiar clinical picture and specific changes in brain imaging.

КРУГЛІ ПЛИТИ НА ПРУЖНІЙ ОСНОВІ ЗІ ЗМІННИМ КОЕФІЦІЄНТОМ ПОСТЕЛІ

The paper considers the application of the analytical method - the method of direct integration - to the calculation of building structures in the form of round and annular plates and slabs lying on a continuous variable elastic basis. The application of the proposed approach allowed to obtain solutions of a wide class of problems, the mathematical summary of which are differential equations with variable coefficients or systems of such equations, and at the same time to evaluate the possibilities and accuracy of calculation of finite elements. The base reaction is described by the Winkler model with a variable bed ratio. With respect to the bending of round and annular plates, formulas for the function of deflections and its derivatives, transverse force and bending moments are obtained. The method is applicable under any given boundary conditions on the contours. The calculation is reduced to determining from the given boundary conditions of the unknown constants of integration and numerical realization of the obtained solutions. The found formulas of the general form are transformed for practically important case when the factor of a bed and loading have the form of polynomials. It is shown that in this case dimensionless fundamental functions are represented by static series. To calculate the coefficients of static series, the corresponding recurrent relations are derived. The calculations show that the discrepancy in the results of the calculation of the deflections of the FEA and the author’s method (AM) is insignificant (not more than 1%), and the results of the calculation of radial and circumferential moments differ significantly, and this difference sometimes reaches 12-14%. However, when the grid is condensed in the circumferential direction, the picture changes, there is a convergence of the results obtained by two methods. This indicates the inaccuracy of the finite element analysis performed on the basis of automatic partitioning of the finite element grid. And this, in turn, leads to "blind" reinforcement of reinforced concrete slabs, in which it is possible, both re-reinforcement of the structure and its insufficient reinforcement.

Emulsion-assisted thermal recovery method in heterogeneous oilsands reservoir

To prevent the steam from channeling and breakthrough in heterogeneous oil sands reservoirs, oil-in-water (O/W) emulsion is proposed and developed as a plugging agent in this study. However, one suspects that increased temperature destabilizes emulsion, promoting oil/water separation and thus to lose its plugging benefits induced by “Jamin effect”. This intuitive picture changes when the emulsion flows through heated porous media. In this paper, we show that increasing temperature enhances emulsion plugging effect, after a critical temperature reaches. O/W emulsions were firstly prepared at room temperature (~20 °C) individually using eight different surfactants and then injected in sandpacks at temperatures ranging from 20 °C to 140 °C. Experimental results show that the emulsion plugging strength at temperature of 140 °C is three times greater than that at room temperature (20 °C) and still shows a rising trend with temperature up to 140 °C. Measurements of the median droplet sizes of the effluents at different temperatures showed that there was no phase separation during the flow tests. This is because that the “snap-off” and “fingering induced break-up” processes keep the emulsion droplets dynamically stable during the flowing process. It is the changing hydrophilic-lipophilic characteristic of the surfactant molecules, as the temperature increases, that causes a parabola trend with a minimum of IFT and thus influences the emulsion plugging effect. What we expect following steam injection into the reservoir is that the achieved emulsion plugging strength could still be maintained or even enhanced so that the emulsion slug will not be easily displaced away by further steam injection, thus optimizing thermal recovery performance. By carefully selecting surfactant on the basis of its hydrophilic-lipophilic characteristic, an optimum emulsion system, contributing expected plugging strength at elevated temperatures, was designed, applied and verified for effective conformance control in heterogeneous parallel-sandpack. The experimental results demonstrate the designed emulsion can achieve conformance control in parallel-sandpack with a permeability ratio of 10 Darcy: 5 Darcy at room temperature and the conformance performance is still maintained as the temperature increases, up to 99 °C.

Dispersion relations of interface and quasi-confined phonon modes in ZnO/BeZnO quantum wells

The long-wave optical phonon frequencies of BexZn1−xO alloys are determined within the modified random-element isodisplacement model. The results indicate a two-mode behavior for A1 and E1 branches of the optical phonons. The dispersions of the interface and quasi-confined modes in the polar ZnO/BexZn1−xO quantum wells are calculated within the dielectric continuum model up to x=0.2. In the absence of strain, the quantum wells yield as many as three distinct frequency ranges for the IF modes. However, the quasi-confined modes have two separate frequency ranges with boundaries determined by the ZnO-like and ZnO phonons. With the inclusion of strain, the boundaries of the frequency ranges for each mode are modified but without any change in the overall picture.

The Rich Get Richer and the Poor Get Poorer: Behavior of Investors in Pharmaceutical Firms Post-IPOs

This paper analyzes stocks’ price behavior after IPO events in the pharmaceutical sector and explores the role of social media in determining this behavior. The results indicate positive and significant cumulative average abnormal returns (CAAR) of 3.70% in the first 20 days following an IPO until the end of quiet period, and a decline of tens of percent over the next three years. However, when dividing the sample into two sub-samples according to firm size, using a separation market value of $500 million, the overall picture changes dramatically. Firms with a market value lower than $500 million yielded a positive yet not significant CAAR 20 days post-IPO and a significant negative CAAR from day 50 onwards. Firms with a market value higher than $500 million experienced a significant positive CAAR from day 20 after the IPO and throughout the following year. These findings can be attributed to the limited attention of investors. Attention to the new IPOs increases until the end of quiet period and, in the case of small-sized firms, diminishes during the post-IPO years. An examination of social media and share returns demonstrates a robust correlation between the two, which may indicate that investors’ attention to these firms is also reflected in social media.

The Status of VNN (Viral Nervous Necrosis)-lnfected Grouper Fish Tissue with Chlorella vulgaris Extract as Anti-Virus Candidate

To date, the most common problem in Grouper fish cultivation is VNN (Viral Nervous Necrosis) virus attack. Visual and histological observations on the fish behavior can be done to diagnose the presence of VNN. Chlorella vulgaris is believed to be one of the natural alternative ingredients that have the potential to be a VNN anti-virus. The purpose of this study is to determine the potential use of C. vulgaris extract as a candidate for VNN antivirus by conducting histological observations on the organ tissue of Grouper fish. The method used in this study was a qualitative approach with histopathological techniques examining the fish organs such as brain, kidney and eyes from each treated fish. The clinical symptom observation was carried out for 14 days. Then, the harvested organs were brought for tissue preparation and observed again with a light microscope. In this case, the histopathological changes can be assessed using a semiquantitative scoring method. The results reveal that the Grouper fish had several symptoms such as darkening body-color, abdominal bloating, abnormal swimming behavior, and decreased appetite. It is also found that there was a change in the histological picture between the infected fish without treatment and the infected fish with the administration of C. vulgaris extract. There were a number of lesions such as vacuolization, hemorrhagic, hypertrophy, and necrosis in the kidney, eye, and brain of the infected fish. Of all the treatments given, treatment (D) shows a little damage to the fish kidney, eye, and brain respectively by 26.7%, 33.3% and 33.3%. Therefore, it can be said that the administration of C. vulgaris as an alternative feed and antivirus candidate can be used as a natural immune-stimulant to enhance the immune system of Grouper fish.

Change in Pictures: Creating best practices in archiving ecological imagery for reuse

The research data repository of the Environmental Data Initiative (EDI) is building on over 30 years of data curation research and experience in the National Science Foundation-funded US Long-Term Ecological Research (LTER) Network. It provides mature functionalities, well established workflows, and now publishes all ‘long-tail’ environmental data. High quality scientific metadata are enforced through automatic checks against community developed rules and the Ecological Metadata Language (EML) standard. Although the EDI repository is far along in making its data findable, accessible, interoperable, and reusable (FAIR), representatives from EDI and the LTER are developing best practices for the edge cases in environmental data publishing. One of these is the vast amount of imagery taken in the context of ecological research, ranging from wildlife camera traps to plankton imaging systems to aerial photography. Many images are used in biodiversity research for community analyses (e.g., individual counts, species cover, biovolume, productivity), while others are taken to study animal behavior and landscape-level change. Some examples from the LTER Network include: using photos of a heron colony to measure provisioning rates for chicks (Clarkson and Erwin 2018) or identifying changes in plant cover and functional type through time (Peters et al. 2020). Multi-spectral images are employed to identify prairie species. Underwater photo quads are used to monitor changes in benthic biodiversity (Edmunds 2015). Sosik et al. (2020) used a continuous Imaging FlowCytobot to identify and measure phyto- and microzooplankton. Cameras at McMurdo Dry Valleys assess snow and ice cover on Antarctic lakes allowing estimation of primary production (Myers 2019). It has been standard practice to publish numerical data extracted from images in EDI; however, the supporting imagery generally has not been made publicly available. Our goal in developing best practices for documenting and archiving these images is for them to be discovered and re-used. Our examples demonstrate several issues. The research questions, and hence, the image subjects are variable. Images frequently come in logical sets of time series. The size of such sets can be large and only some images may be contributed to a dedicated specialized repository. Finally, these images are taken in a larger monitoring context where many other environmental data are collected at the same time and location. Currently, a typical approach to publishing image data in EDI are packages containing compressed (ZIP or tar) files with the images, a directory manifest with additional image-specific metadata, and a package-level EML metadata file. Images in the compressed archive may be organized within directories with filenames corresponding to treatments, locations, time periods, individuals, or other grouping attributes. Additionally, the directory manifest table has columns for each attribute. Package-level metadata include standard coverage elements (e.g., date, time, location) and sampling methods. This approach of archiving logical ‘sets’ of images reduces the effort of providing metadata for each image when most information would be repeated, but at the expense of not making every image individually searchable. The latter may be overcome if the provided manifest contains standard metadata that would allow searching and automatic integration with other images.

Global trends in clinical trials involving pluripotent stem cells: a systematic multi-database analysis

Pluripotent stem cells (PSCs) hold great potential for novel therapeutic approaches to regenerate or replace functionally impaired tissues. Since the introduction of the induced pluripotent stem cell technology in 2006, the number of scientific publications on this topic has constantly been increasing. However, so far no therapy based on PSCs has found its way into routine clinical use. In this study, we examined research trends related to clinical trials involving PSCs based on data obtained from ClinicalTrials.gov, the ICTRP database from the World Health Organization, as well as from a search of all individual databases that are included in the ICTRP using a multistep search algorithm. Following a stringent inclusion/exclusion procedure 131 studies remained that could be classified as clinical trials involving PSCs. The magnitude of these studies (77.1%) was observational, which implies that no cells were transplanted into patients, and only a minority of studies (22.9%) were of an interventional study type. The number of clinical trials involving induced pluripotent stem cells (iPSCs, 74.8%) was substantially higher than the one involving embryonic stem cells (ESCs, 25.2%). However, the picture changes completely when focusing on interventional studies, where in the majority (73.3%) of cases ESCs were used. Interestingly, also the study duration was significantly shorter for interventional versus observational trials (p = 0.002). When focusing on the geographical study regions, it became obvious that the greatest part of all observational trials was performed in the USA (41.6%) and in France (16.8%), while the magnitude of interventional studies was performed in Asian countries (China 36.7%, Japan 13.3%, South Korea 10.0%) and in the field of ophthalmology. In summary, these results indicate that only a limited number of trials were focusing on the actual transplantation of PSCs into patients in a rather narrow field of diagnoses. The future will tell us, if the iPSC technology will ultimately overcome the current challenges and will finally make its way into routine clinical use.

Geometrical framework for picture changing operators in the pure spinor formalism

It is well known in NSR string theory, that vertex operators can be constructed in various “pictures”. Recently this was discussed in the context of pure spinor formalism. NSR picture changing operators have an elegant super-geometrical interpretation. In this paper we provide a generalization of this super-geometrical construction, which is also applicable to the pure spinor formalism.

Avant-garde Design of Vadуm Meller

The aim of the article is to conduct in-depth analysis of design activity of a leading Ukrainian avant-gardist Vadym Meller with the focus on his stage design and stage costume. Methodology of the research is determined by application of historical method and method of art criticism, namely formal stylistic analysis. Novelty of the research. The research includes detailed analysis of design activity of Vadym Meller and his ideological relationship with the Bauhaus. It is for the first time when problems and reconstruction experience of stage costume based on sketches by V. Meller, conducted by the Museum of Theater, Music and Cinema of Ukraine, have been studied. The article introduces the term costume construction which shows constructive approach of the artist to staging a play as a whole. Stage costume is seen being integrated into the stage setting; it interacts with the setting by movements and recurrence of colours. Thorough choice of details let the stage picture change, reinforcing the content of the play. Conclusion. Avant-garde design of Vadym Meller proves the fact that high quality of his art is the result of special search of inner-driven stylistic compliance with the spirit of the time. This idea provides basis for contemporary designers to reconsider the approach to interaction with avant-garde trends: not only to borrow avant-gardists forms and colours, but also to consider artistic searches and techniques to resolve ethical issues.

Low-Cost Covid-19 Screening Protocol

Background: COVID19 still not under human medical control, still killing people every were, virus lethality is unpredictable, time needed till having an effective drug or vaccine is still unclear, and humanity economic resources are being exhausted. Low-cost COVID-19 screening program is of great importance all over the world due to early general inventory of COVID-19 +ve patients before the onset of pulmonary symptoms in highly susceptible population (city, village, hospital clinics…etc). Hypothesis: Blood picture changes in COVID-19 +ve patients as lymphocytopenia , increased D-dimer>1000 µg/L(>1µg/ml) and mild elevation of serum Ferritin [early (survivors >400µg/L)and late (non-survivors >1000 µg/L)] occur early prior to pulmonary symptoms, and portable chest X ray hence can be used as reliable indicator for early COVID-19 diagnosis and this may save the use of CT chest as well as swab-PCR. Conclusion: We can screen out COVID 19 endemic zones and run the outpatient clinics in hospitals with the least coast during the period of lack of effective drug or vaccine against COVID 19 epidemic.