bluuebunny/crossref_metadata_2025 huggingface dataset:
2. Development of Artistic Creativity in Students by Studying and Applying Ornamental Motives in the Textile Art Course
Authors: Arbuz-Spatari Olimpiada
Published: May 2020

In the training process within the textile art course, a system of methods of studying and applying the elements of the plastic language is used within the proposed methodology, which was followed by the development of artistic creativity in the students of the plastic art faculty. These methods were developed and applied in the course of textile art for the compartments: elaboration of creative compositions; consciously applying the elements of plastic language; studying and applying ornamental motifs in the textile art course. The methods developed for the textile art course, in their interaction, will contribute to the development of the student’s artistic creativity, helping him to execute the creative product in the field of textile arts.
5. The Innovative Praxeology: Suggestions for Implementing in Artistic Education
Authors: Bularga Tatiana
Published: May 2020

The process of artistic perception in instructive and formative actions is identified with the educative action itself. In this process the considerable weight rests on the participative state kid to the design, development and evaluation/self-evaluation (through prescription of individual behavioural maps, anticipating practical actions, varying operations, performing the tasks by choosing the optimal variants for solving) and the dynamics of professional competence of teachers to achieve gradually the theoretical design process and practical actuating, by identifying educational content and valuable actions, diagnosing the individual resources, planning, forming hypotheses, sequential and final evaluation. In our statements we proceed from the reality that the artistic activity differs much from other human activities through its ontological specifics, which requires taking into account the opportunities and challenges that arise in individual potential manifestation of the child, act that expresses by transposing the theoretical prescriptions into practical actions indisputable by the presence of emotional-affective reactions, by developing projects and logistical maps of action, is not waiting for certain stimuli coming from outside, but by enhancing the artistic intentions and decisions of child – subjects of education.
11. “Seeing Is Believing”: The Importance of Visual Factors in Music Performance Assessment
Authors: Iușcă Dorina Geta
Published: May 2020

The criteria recommended for the performance of internal assessment are the ones included in the national model for school inspection applied by the inspectors in the school inspectorate or the Ministry of Education (with subsequent names) who carry out internal assessments. Educational establishments can also decide on certain additional criteria - in line with the specific needs. All educational establishments must perform the annual assessment of activity, regarding school development, educational programs, curricular and extracurricular activities, quality of the teaching-learning process, human resources development, relations with the community and European dimension in the education offered. A tricky problem is represented by the specific assessment of Children Centres and Clubs that carry out non-formal activity, without school programs and handbooks approved by the Ministry of Education. Carrying out an analysis of the manner of assessing formal and non-formal educational units, the need to readjust the internal and external assessment was identified. At the level of school inspectorates, school inspection is carried out by a team consisting of specialised inspectors who know the specificity of those educational units. The main problem is represented by the external assessment carried out by ARACIP with the help of standard specific means: fields, indicators, reference descriptors and specific descriptors. Through the study performed, a series of proposals on the beneficial amendments for the quality assessment within Children Centres and Clubs is identified.
Housing Privatization in Transition Countries: Institutional Features and Outcomes
Authors: Broulíková Hana M. , Montag Josef
Published: May 2020

We provide an overview of housing privatization policies and outcomes in transition economies. Our primary aim is to collect and systematize key information concerning the institutional features of housing privatization in individual countries: we identify the initial conditions, the timeframe of housing privatization and its culmination, the extent of housing privatization, who decided about its terms and conditions, who was entitled to privatize the housing, and at what price. Furthermore, using micro-data covering all transition countries, we present new estimates of the extent of housing privatization, its dynamics during the second half of the 2000s, and the resulting housing tenure structure.
Antimicrobial activity of different substituted meso-porphyrin derivatives
Authors: Sălăgeanu Luminița , Muntean Delia , George Horhat Florin , Lascu Anca , Anghel Diana , Bagiu Iulia Cristina , Fagadar-Cosma Eugenia
Published: May 2020

The increasing resistance against classical antibiotic treatment forces the researchers to develop novel non-toxic antimicrobial agents. The aim of this study was to determine the antimicrobial properties of seven different porphyrins having distinctive hydrophobicity/hydrophilicity: P1 meso-tetra(4-methoxy-phenyl)porphyrin, P2 Zn(II)-meso-5,10,15,20-tetrapyridylporphyrin, P3 meso-tetra(p-tolyl)porphyrin, P4 5,10,15,20-tetraphenylporphyrin; P5 (5,10,15,20-tetraphenylporphinato) dichlorophosphorus(V) chloride, P6 5,10,15,20-tetrakis-(N-methyl-4-pyridyl) porphyrin-Zn(II) tetrachloride, P7 Zn(II)-5,10,15,20-meso-tetrakis-(4-aminophenyl)porphyrin. The meso-porphyrin derivatives were screened for their antimicrobial activity against six reference strains: Streptococcus pyogenes ATCC 19615, Staphylococcus aureus ATCC 25923, Escherichia coli ATCC 25922, Klebsiella pneumoniae ATCC 700603, Pseudomonas aeruginosa ATCC27853 and Candida albicans ATCC 10231. The antimicrobial activity of these samples was evaluated by the agar disk diffusion method and dilution method, with the determination of the minimum inhibitory concentration (MIC), the minimum bactericidal concentration (MBC) and the minimum fungicidal concentration (MFC). The most significant result is provided by the water-soluble P5 manifesting an obvious antimicrobial activity against Streptococcus pyogenes. On the other hand, P6 is a moderately active derivative against Streptococcus pyogenes and Escherichia coli and P7 presents moderate activity against Streptococcus pyogenes and Staphylococcus aureus. All the tested porphyrin bases, presenting hydrophobic character, have no antimicrobial activity under the investigated conditions. The common characteristics of the porphyrins that act as promising antimicrobial agents in the non-irradiated methods are: the cationic nature, the increased hydrophilicity and the presence of both amino functional groups grafted on the porphyrin ring and the coordination with Zn or phosphorus in the inner core.
Optimization of Wire EDM Process Parameters for Medical Grade Nickel Titanium Shape Memory Alloy
Authors: Kulkarni Vinayak N , Gaitonde V N , Nalavade K S , Doddamani Mrityunjay , Naik Gajanan M
Published: May 2020

Nickel Titanium (NiTi) alloys are the class of smart materials classified under shape memory alloys. The traditional machining of these alloys is hard because of various inherent mechanical characteristics of these alloys. Therefore, non-traditional machining process such as wire electro discharge machining (WEDM) has been employed for machining of such alloys. The present study is focused on multi-performance characteristic simultaneous optimization of WEDM process parameters, in which three system control factors, namely, pulse on time (TON), pulse off time (TOFF) and wire feed (WF) are considered for simultaneously maximizing material removal rate (MRR), while minimizing surface roughness (SR) and tool wear rate (TWR). The simultaneous optimization is performed using Taguchi’s Quality Loss Function. Analysis of means and analysis of variance have been carried out to identify the significance level of each system control factor. The different levels of settings and the optimized setting have been analysed using scanning electron microscope images for surface morphological studies. The multi-response optimization investigations revealed that TON is the major contributing factor and optimal performance values were obtained at TON of 125μs, TOFF of 25μs and at WF of 4 m/min.
Preloaded Bolted Joint Made with a Single Row of Fasteners
Authors: Michael Welch
Published: May 2020

The purpose of this technical note is to present a method of analysis of a joint made using a single row of bolts, typical of a bolts around the edge of a closure plat or a simple bracket. Classical analysis methods are applied to the joint subjected to combinations of both in-plane and out-of-plane loads and moments. An analysis of loads and stresses in a single bolt is developed. The note brings together a number of concepts and links them into a practical design analysis process that is applicable for many cases of joints made with a single bolt or a single line of bolts and are adequate to demonstrate the structural integrity of the joint. In some cases finite element methods may be more appropriate, and the methods discussed can be used in the validation process.
The Status of Conditional Syllogism in Syllogistics
Authors: Mahmmoud Yagoubi , Fatahine Moussa
Published: May 2020

The form of the conditional syllogism resembles that of the categorical syllogism, while its subject matter is at least a conditional premise, but its conclusion is always conditional conjunctive or disjunctive. This mixed structure to which we apply the rules of the categorical syllogism, is a structure of which Aristotle did not have an idea, and which the Stoics did not conceive, and which the non-Arabian logicians did not know until in modern times. But what we have to notice here is the putting of a conditional matter in the form of the categorical syllogism, and it is this kind of hybridization, if we dare to say, which generated this mixed structure which appeared for the first time in the history of logic in the treatise on the logic of Ibn Sina and which can be considered a discovery by this author until proof to the contrary, and that the ancient Arabian logicians have taken the habit of exhibiting in their treatises.
Perspectives on the Notion of Truth in Arabic Philosophy
Authors: Mlika Hamdi
Published: May 2020

In the present paper, I assume that the notion of “truth” in philosophy would not have been clarified and tackled properly, if philosophers did not take into account earlier Arabic Medieval research contributions and build upon previous research findings. In the first place, I embark on the scrutiny of the rich aspect (or nature) of the Arabic Lexicon in terms of the “truth” meaning. In the second place, I take on the assumption that Arabic linguistic traditions imply different kinds of truths, depending on various spheres of human thoughts and actions based on the logical approach to “truth” (from Al-Kindi up to Averroes via Al-Farabi and Avicenna) and the term “al-haqiqha” as transliterated from Arabic, remain central. In conclusion, I take on an approach to “truth” that gives worth to logical perspectives at the very heart of Medieval Arab traditions in the light of what I would label as the “Omni-cultural Universality of Logic and Science”.
Reaching the Goal of Alchemy – or: What Happens When You Finally Have Created the Philosophers’ Stone?
Authors: Forster Regula
Published: May 2020

Alchemy is the art of transforming base metals into precious ones, usually silver and/or gold. The most important method conceived to reach this goal was the creation of the elixir, also called the philosophers’ stone, which, applied to the prime-matter, would lead to an accelerated process of ripening of metals, eventually ending in gold. How did Arabo-Islamic alchemists suppose that the transmutation worked? What were the conditions the adept had to fulfil in order to succeed? And what did they think would happen when one finally has created the philosophers’ stone? Will the economy collapse because gold and silver will lose their validity? Will the alchemist simply lean back and enjoy? Or will the world end, because man has finally attained the knowledge that should be God’s only?
A Numerical Investigation of Transient Groundwater Flows with a Phreatic Surface Along Complex Hillslopes
Authors: Zerihun Yebegaeshet T.
Published: May 2020

Most of the existing models for analyzing unconfined flows in hillslope aquifers are based on the Boussinesq (1877) equation. In the development of these models, the assumption of negligible bed-normal velocity was employed, thus restricting their application to shallow groundwater-flow situations. On the basis of a non-hydrostatic pressure approach, a ground-water-flow model that considers the effects of the vertical curvature of the flow streamlines and the three-dimensional geometry of the underlying bedrock was proposed. A dissipative two-four finite-difference scheme was utilized to discretize and solve the model equation. The applicability of the model was assessed by conducting numerical experiments on transient unconfined flows in convergent- and divergent-type hillslope aquifers with non-uniform bedrock slopes. The numerical results for the phreatic-surface profiles and outflow discharges were compared to the experimental data, and a good agreement was obtained. The results of the comparison attested that the dynamics of the hillslope drainage processes were accurately portrayed by the proposed model. This study highlights the necessity of considering the effects of the plan shape and the profile curvature of complex hillslopes in order to improve the overall performance of the computational model.
Association between Oral Health-Related and Health-Related Quality of Life
Authors: Sekulić Stella , John Mike T. , Davey Cynthia , Rener-Sitar Ksenija
Published: May 2020

Objectives

To investigate the correlation between the four dimensions of Oral Health-Related Quality of Life (OHRQoL) and Health-Related Quality of Life (HRQoL) constructs in a dental patient population.

Methods

A cross-sectional study carried out at HealthPartners, Minnesota, USA. This study is a secondary data analysis of available adult dental patients’ data. The instruments used to assess the OHRQoL and HRQoL constructs were the Oral Health Impact Profile–version with 49 items (OHIP-49) and Patient-Reported Outcome Measures Information System (PROMIS) measures v.1.1 Global Health instruments Patient Reported Outcome Measures (PROMs), respectively. We used Structural Equation Modeling to determine the correlation between OHRQoL and HRQoL.

Results

Two thousand and seventy-six dental patients participated in the study. OHRQoL and HRQoL scores correlated with 0.56 (95%CI:0.52–0.60). The OHRQoL and Physical Health dimension of HRQoL correlated with 0.55 (95%CI:0.51–0.59). The OHRQoL and Mental Health dimension of HRQoL correlated with 0.51 (95%CI:0.47–0.55). When adjusted for age, gender, and depression, the correlation coefficients changed only slightly and resulted in 0.52 between OHRQoL and HRQoL Physical Health, and 0.47 between OHRQoL and HRQoL Mental Health. Model fit statistics for all analyses were adequate and indicated a good fit.

Conclusions

OHRQoL and HRQoL overlap greatly. For dental practitioners, the OHRQoL score is informative for their patients’ general health status and vice versa. Study results indicate that effective therapeutic interventions by dentists improve patients’ OHRQoL as well as HRQoL.
A Keynesian Approach to Fiscal Policy for Full Employment and Continuous Time Debt Dynamics
Authors: Tanaka Yasuhito
Published: May 2020

It is widely argued that public debt is a burden on the future generations. We analyze another aspect of public debt as an economic stimulus program, that is, the measure to realize full employment from an under-employment state. Using a continuous time version of a dynamic analysis of debt-to-GDP ratio we show that a fiscal policy to realize full employment from a state of under-employment can reduce the debt-to-GDP ratio. More precisely we show that the larger the extra growth rate (increasing rate) of real GDP by a fiscal policy is, the smaller the debt-to-GDP ratio at the time when full employment is realized is. Also we show that even if the marginal propensity to consume is very small (including zero), an aggressive fiscal policy can realize full employment without increasing the debt-to-GDP ratio. Further, we consider a condition to realize full employment from a state of under-employment within one year without increasing debt-to-GDP ratio.
“This Time of Isolation” Or about the Forgotten Meanings of Theatre
Authors: Jighirgiu Octavian
Published: May 2020

The individual’s alienation, the dehumanizing relationship with the technological advancement, the communication crisis and the entire theoretical field targeting the current collective psychosis are now moving into a pragmatism which is brutal, cruel, and immediate. The pandemic concerns all of us at the same extent, each of us is directly affected; the enemy is reproducing itself and is felt physically, therefore consciously, on a global scale. It is a lesson about another way of “being”, we are challenged to survive to ourselves according to the principle which is so well-rooted in the world of the theatre: “play this, is you can!” But, “this time of isolation” gives something to us as well, not only does it take something from us. It is a good time for reflection. The vulnerability of the human being proves to be, at this point, above all, the sole meaning of the search. Deprived of its primordial element, the gathering, it requires a return to the sacred nature of the beginning. The contextual reassessment must begin from the actor. The indefinite suspension of the humankind’s right to social interaction is transformed, therefore, from a sign of clinical death of the theatre, into a thorough working formula. We are not launching this hypothesis with the intention of establishing postulates, but we are rather trying to make an anticipative exercise on the edge of a hole, which if ignored, can turn into an abyss.
King Lear’s Fool
Authors: Cornici Antonella
Published: May 2020

Shakespeare does not introduce the Fool in his plays by accident or in order to entertain or to amuse. On the contrary, his lines are earnest, filled with undertones, his advices are witty, and their purpose is to amend the one they are aimed at, to point out their mistakes, to warn them, and even to intervene in the play’s plot. The journey of the Fool in King Lear shows that, without this character, the play would be situated somewhere at the border with the Irrational. All the characters seem to be lacking reason, they act without logic. By bringing in the Fool, one is presented the image of the “standstill” in which England’s Royalty was. All the irrationality is transferred to the King. The rest of the characters are, thus, “saved”, their actions being justified by affections that darken their minds and, obviously, accountable for those senseless actions is no one else but Lear.

The disappearing of the Fool in King Lear remains a mystery that directors have “deciphered” in many ways. Shakespeare inserted this character in the middle of the first act and kept him throughout the play until the third act; then, gradually, the king’s fool disappeared. The manner this happens is almost imperceptible.

The productions of this play are not numerous, King Lear, as critic Marina Constantinescu noticed, is, perhaps, one of the most difficult plays of Shakespeare, profoundly philosophical, linguistically complicated, filled with human nuances, sophisticatedly put on page.

The performances to which we will make reference for the monologue of the Fool from King Lear are by Andrei şerban (2008 and 2012, Bulandra Theater) and Tompa Gábor (2006, Cluj National Theater).
Theatrical Event and Alternative Advertising in the Romanian Theater
Authors: Tătar-Vîstras Ivona
Published: May 2020

In the last years, the exclusive integration of advertising in the marketing mix has become a word-out manner of acting at an operational level. The autonomy of advertising in the management process has become inherent and, generally, closer to the area of communication than the other elements of the mix (price, place, product). The communication policies of an institution or company have separated more and more from the traditionally recognized marketing component. At the same time, in the case of Romanian theater (and, in general, in the cultural environment), but especially in the sector of independent theater, we can see a novel operational process, whereby not only the nature of the cultural service governs the media plan, but the reverse also applies. “Direct marketing” approaches seem to add an outer layer to the institutional communication segment and to dictate even an artistic-aesthetic direction to the organization.
Finite Volume Scheme for AMSS Model
Authors: Handlovičová Angela
Published: May 2020

We propose a new finite volume numerical scheme for the approximation of the Affine Morphological Scale Space (AMSS) model. We derive the basic scheme and its iterative improvement. For both schemes, several numerical experiments using examples where the exact solution is known are presented. Then the numerical errors and experimental order of convergence of the proposed schemes is studied.
Efficient 3D Shape Registration by Using Distance Maps and Stochastic Gradient Descent Method
Authors: Okock Polycarp Omondi , Urbán Jozef , Mikula Karol
Published: May 2020

This paper presents an efficient 3D shape registration by using distance maps and stochastic gradient descent method. The proposed algorithm aims to find the optimal affine transformation parameters (translation, scaling and rotation) that maps two distance maps to each other. These distance maps represent the shapes as an interface and we apply level sets methods to calculate the signed distance to these interfaces. To maximize the similarity between the two distance maps, we apply sum of squared difference (SSD) optimization and gradient descent methods to minimize it. To address the shortcomings of the standard gradient descent method, i.e., many iterations to compute the minimum, we implemented the stochastic gradient descent method. The outcome of these two methods are compared to show the advantages of using stochastic gradient descent method. In addition, we implement computational optimization’s such as parallelization to speed up the registration process.
Macrophage Image Segmentation by Thresholding and Subjective Surface Method
Authors: Park Seol Ah , Sipka Tamara , Krivá Zuzana , Ambroz Martin , Kollár Michal , Kósa Balázs , Nguyen-Chi Mai , Lutfalla Georges , Mikula Karol
Published: May 2020

We introduce two level-set method approaches to segmentation of 2D macrophage images. The first one is based on the Otsu thresholding and the second one on the information entropy thresholding, both followed by the classical subjective surface (SUBSURF) method. Results of both methods are compared with the semi-automatic Lagrangian method in which the segmentation curve evolves along the edge of the macrophage and it is controlled by an expert user. We present the comparison of all three methods with respect to the Hausdorff distance of resulting segmentation curves and we compare also their perimeter and enclosed area. We show that accuracy of the automatic SUBSURF method is comparable to the results of the semi-automatic Lagrangian segmentation.
Improved Accuracy of Vehicle Counter for Real-Time Traffic Monitoring System
Authors: Setiadi De Rosal Ignatius Moses , Fratama Rizki Ramadhan , Partiningsih Nurul Diyah Ayu
Published: May 2020

This research proposes a background subtraction method with the truncate threshold to improve the accuracy of vehicle detection and tracking in real-time video streams. In previous research, vehicle detection accuracy still needs to be optimized, so it needed to be improved. In the vehicle detection method, there are several parts that greatly affect, one of which is the thresholding technique. Different thresholding methods can affect the results of the background and foreground separation. Based on the results of testing the proposed method can improve accuracy by more than 20% compared to the previous method. The thresholding method has a considerable influence on the final result of vehicle object detection. The results of the average accuracy of the three types of time, i.e. morning, daytime, and afternoon reached 96.01%. These results indicate that the vehicle counting accuracy is very satisfying, moreover, the method has also been implemented in a real way and can run smoothly.
A patient with idiopathic normal pressure hydrocephalus and amyotrophic lateral sclerosis. Coincidence or a genetic link between the diseases?
Authors: Eleftheriou Andreas , Nilsson Martin , Lundin Fredrik
Published: May 2020

Background:

Idiopathic normal pressure hydrocephalus (iNPH) is usually regarded as a disease characterized by gait and balance disturbance, cognitive dysfunction, and urinary symptoms. The pathophysiology of iNPH is still unknown, but the increased number of familial cases raises the suspicion of a genetic component. The C9ORF72 expansion is known to cause frontotemporal lobar degeneration and ALS, and its prevalence is found among Finnish iNPH patients.

Case Presentation:

We report an interesting case of a patient with possible iNPH who also developed ALS.

Conclusion:

Our case raises the theory of coexistence of gene-induced etiology.

Key Message:

Our case also raises the question of a genetic link between iNPH and ALS.
Ectopic breast tissue carcinoma—a case report
Authors: Rodrigues Isabel , Pereira Nuno , Varelas Ana , Coimbra Nuno , Leal Conceição , Lencastre Luís , Ferreira Ana , Azevedo Isabel , Pereira Helena
Published: May 2020

Background:

Ectopic breast cancer is a rare entity and an important diagnostic and treatment challenge.

Case Presentation:

46-year-old female with previous history of resection of ectopic axillary breast tissue who was referred to our Institution after a second resection following an increase in left axillary volume. Histology reported a ductal ectopic breast tissue carcinoma that invaded the deep layer of the dermis and was positive for estrogen and progesterone receptors and Human Epidermal growth factor Receptor-type 2. After being referred to our Institution, surgical margin re-excision and sentinel node biopsy were performed. The patient initiated hormone therapy and underwent adjuvant radiotherapy to the breast and axilla (50 Gy/25 fractions, in daily 2 Gy fractions with a 3D conformal radiation therapy technique) and boost with bolus to the axilla (to complete 60 Gy). She remains in follow-up, with no recurrence to date.

Conclusion:

A high index of suspicion is required for the timely diagnosis of this rare condition. Since there are no specific guidelines, treatment remains a challenge.
DESFECHO FUNCIONAL DO PACIENTE DE TRAUMA CRANIOENCEFÁLICO APÓS A ALTA DA UNIDADE DE TERAPIA INTENSIVA
Authors: Costa Ana Maria Paulo , Pereira Samanta Erlen Martins , Câmara Paulo Marcelo Sá Palácio , Bastos João Vitor Câmara Diógenes , Martins David Jonathan Nogueira , Bastos Vasco Pinheiro Diógenes
Published: May 2020

O traumatismo cranioencefálico (TCE) é uma lesão advinda de um trauma externo que gera alterações cranianas, podendo causar fraturas ou afetar as estruturas cerebrais ocasionando prejuízos cognitivos ou funcionais, permanentes ou momentâneos. O presente estudo teve como objetivo avaliar o desfecho funcional do paciente de trauma cranioencefálico após a alta da UTI, traçando o perfil sociodemográfico e verificando o tempo de permanência no setor, o nível de independência funcional, o grau de força muscular entre outras variáveis importantes. A pesquisa foi de caráter exploratório, transversal, descritivo e de abordagem quantitativa dos dados coletados. A coleta de dados foi realizada em um hospital de referência em Trauma na cidade de Fortaleza/CE, no período de maio a setembro/2018. A amostra do estudo foi de 57 pacientes onde houve 14 óbitos, sendo a idade média de 37,32 ± 18,13 anos. Houve o acometimento de deformidades tais como lesões por pressão 39,53% (n=17) e fraturas de face 13,95% (n=6). Com tempo de permanência da UTI em média de a 20,30 ± 16,18 dias. Os valores da Escala de Medical Research Council (MRC) e Escala de Medida de Independência Funcional (MIF) se correlacionam visto que apenas três pacientes foram classificados com independência funcional enquanto 100% da amostra apresentaram valores abaixo da normalidade para a força muscular. Conclui-se que os pacientes de TCE após alta da UTI manifestam prejuízos como fraqueza muscular grave, nível de independência prejudicado afetando sua qualidade de vida.
Direct Epitaxial Nanometer-Thin InN of High Structural Quality on 4H-SiC by Atomic Layer Deposition
Authors: Hsu Chih-Wei , Deminskyi Petro , Martinovic Ivan , Ivanov Ivan G. , Palisaitis Justinas , Pedersen Henrik
Published: May 2020

Indium nitride (InN) is a highly promising material for high frequency electronics given itslow band gap and high electron mobility. The development of InN-based devices is hamperedby the limitations in depositing very thin InN films of high quality. We demonstrate growth ofhigh-structural-quality nanometer thin InN films on 4H-SiC by atomic layer deposition (ALD).High resolution X-ray diffraction and transmission electron microscopy show epitaxial growthand an atomically sharp interface between InN and 4H-SiC. The InN film is fully relaxed already after a few atomic layers and shows a very smooth morphology where the low surfaceroughness (0.14 nm) is found to reproduced sub-nanometer surface features of the substrate. Raman measurements show an asymmetric broadening caused by grains in the InN film. Our results show the potential of ALD to prepare high quality nanometer-thin InN films for subsequent formation of heterojunctions.
A Study of Hybridization Understanding from Algorithmic to Conceptual – Is Algorithmic an End Point for Students?
Authors: Manchester Gianna J. , Winter Julia , Hickey Sean P. , Wegwerth Sarah
Published: May 2020

This paper details the results of a qualitative study examining the reasoning students use to solve common hybridization theory assessment questions and their mental images of hybrid and atomic orbitals. The data were collected through think-aloud interviews as students worked through a five-question questionnaire. Prior to recruitment, the study was deemed to be exempt from IRB review by Sterling IRB. Prior to start of interviews participants provided verbal consent. The resulting transcripts and answers were analyzed following the practices of grounded theory and constant comparative analysis. Coding schemes can be found in the Supplementary Information section. Results, conclusions, and implications for teaching are presented in the manuscript.
Natural Compounds as Inhibitors of SARS-CoV-2 Main Protease (3CLpro): A Molecular Docking and Simulation Approach to Combat COVID-19
Authors: Rehman Md Tabish , AlAjmi Mohamed F , Hussain Afzal
Published: May 2020

Recently, the emergence and dissemination of SARS-CoV-2 has caused high mortality and enormous economic loss. In the fight against COVID-19, the rapid development of new drug molecules is the need of hour. However, the conventional approaches of drug development is time consuming and costly in nature. In this study, we have adopted an alternative approach to identify lead molecules from natural sources using high throughput virtual screening approach. Ligands from natural compounds library from Selleck Inc (L1400) have been screened to evaluate their ability to bind and inhibit the main protease (Mpro or 3CLpro) of SARS-CoV-2, which is a potential drug target. We found that Kaempferol, Quercetin, and Rutin were able to bind at the substrate binding pocket of 3CLpro with high affinity (105-106 M-1) and interact with the active site residues such as His41 and Cys145 through hydrogen bonding and hydrophobic interactions. In fact, the binding affinity of Rutin was much higher than Chloroquine (1000 times) and Hydroxychloroquine (100 times) and was comparable to that of the reference drug Remdesivir, which is in clinical trials to treat COVID-19 patients. The results suggest the potential of natural compounds (flavonoids) as novel inhibitors of SARS-CoV-2 with comparable potency as that of Remdesivir.
A DFT Study on the Electrocatalytic Reduction of CO2 to CO by a Molecular Chromium Complex
Authors: Moreno Juan J. , Hooe Shelby L. , Machan Charles
Published: May 2020

A variety of molecular transition metal-based electrocatalysts for the reduction of carbon dioxide (CO2) have been developed to explore the viability of utilization strategies for addressing its rising atmospheric concentrations and the corresponding effects of global warming. Concomitantly, this approach could also meet steadily increasing global energy demands for value-added carbon-based chemical feedstocks as non-renewable petrochemical resources are consumed. Reports on the molecular electrocatalytic reduction of CO2 mediated by chromium (Cr) complexes are scarce relative to other earth-abundant transition metals. Recently, our group reported a Cr complex that can efficiently catalyze the reduction of CO2 to carbon monoxide (CO) at low overpotentials. Here, we present new mechanistic insight through a computational (DFT) study, exploring the origin of kinetic selectivity, relative energetic positioning of the intermediates, speciation with respect to solvent coordination and spin state, as well as the role of the redox-active bipyridine moiety. Importantly, these studies suggest that under certain reducing conditions, the formation of bicarbonate could become a competitive reaction pathway, informing new areas of interest for future experimental studies.
The Legal Saga of Exclusion Clauses in Malaysia
Authors: Meng Tan Pei
Published: May 2020

One of the issues that could affect the success or the sustainability of a business organisation is its ability to manage the legal risk of liability that it faces in running its business. One common tool utilised by businesses is to insert an exclusion or limitation clause in their contracts. This would allow them to predict and apportion the possible amount of liability that could arise from breach of contract or negligence. The courts usually exercise caution in allowing such clauses to be enforced in order to prevent unfairness especially to the weaker party. Malaysia is of no exception. The Malaysian courts have display willingness to strike down the validity of an exclusion clause to ensure that a business organisation does not escape liability arising from its own fault. The Federal Court and the Court of Appeal decision in Bourke v CIMB Bank Bhd (2018) are good examples of such an approach. However, the legal reasoning adopted by the courts in this case has led to numerous confusions on the legal principles of contract law in Malaysia. It is therefore necessary to examine the legal position of exclusion clauses in Malaysia today and to determine what is the most appropriate way forward. This research found that there are difficulties with the legal coherency and application of Bourke in future cases.
Questions on utilization of different height balloon sources of optical radiation for calibration of network of ground microtelescopes for tracking of orbital satellites
Authors: Asadov H. H. , Mamedova U. F.
Published: May 2020

One of ways to increase accuracy of ground tracking of orbital satellites is high accuracy calibration of network of microtelescopes used for this purpose. To attain high accuracy utilization of stable laser sources of radiation is most expedient. To install such sources the balloon platforms mounted at some height are practiced. But utilization of only one fixed height of all sources for calibration could lead to insufficient value of signal/noise ratio due to unpredictable atmospheric events. At the same time utilization of sources with different spectral characteristics can complicate the required methodic for analysis. Authors suggest utilization of same type lasers and carrying out of calibration using platforms installed at different heights. Nonapparent function of dependence of laser beams divergence on height of balloon installation is considered for analysis. Some integrated limitation is imposed on this function. It is assumed that number of microtelescopes receiving optical radiation of one source linearly depends on height of the source. It is required to find out the optimum type of suggested non-apparent function upon which target functional composed as sum of all calibration signals could reach maximum. Utilization of such property of target functional for checking up of carried out calibration procedure is suggested. Providing for the required type of suggested non-apparent function is technically resolvable task because the beam divergence is controlled parameter and height of platform can be measured with sufficient accuracy.
Reducing operational costs of thermal vacuum testing of spacecraft via gaseous nitrogen thermal conditioning technology
Authors: Mikhalkin V. M. , Pastushenko O. V. , Dvirniy V. V. , Dvirniy G. V. , Shevchuk A. A.
Published: May 2020

Many new thermal vacuum testing programs for ground testing of spacecraft require ensuring high accuracy temperature regime in a wide temperature range. Thermal vacuum tests are notable for significant material costs. Therefore, the requirement to reduce operating costs, including those associated with ensuring the temperature regime, is not less relevant. This explains the increased interest in promising energy-efficient technologies, one of which is based on the thermal conditioning of gaseous nitrogen. Systems with gaseous nitrogen thermal conditioning units have an optimal combination of operational and technical characteristics and, compared to systems where liquid nitrogen is poured into cryogenic screens, have lower consumption of liquid nitrogen and electrical energy, especially in stabilized temperature regime. The risk of contamination of the thermal vacuum chamber and the test object due to leaks of the liquid coolant is eliminated. Due to the fact that the properties of nitrogen quite accurately correspond to the ideal gas law, modeling of such systems is relatively simple, and the characteristics are predictable and stable. The article provides a brief analysis of the characteristics of gaseous nitrogen thermal conditioning units of two leading foreign manufacturers and the results of the practical application of four foreign manufactured thermal conditioning units with different characteristics in a typical thermal vacuum chamber. We considered the main directions of improving the characteristics of thermal conditioning units by foreign manufacturers. The conclusion is made about the high efficiency and economic feasibility of gaseous nitrogen thermal conditioning technology in most cases of thermal vacuum testing.
PROSPECTS FOR IMPROVING THE FOUNDATIONS OF THE RUSSIAN CONSTITUTIONAL SYSTEM
Authors: Grudinin Nikita
Published: May 2020

The article deals with some areas of improvement of the foundations of the constitutional system in modern Russia. The author formulated proposals on strengthening the institutions of direct and representative democracy, strengthening the democratic legal nature of the Russian Federation’s statehood, as well as imposing on the state the responsibility for protecting nature, the environment and ensuring environmental safety.
ACTUAL PROBLEMS OF LEGAL REGULATION OF DIGITALIZATION OF AGRICULTURE IN THE RUSSIAN FEDERATION
Authors: Lotorev Evgeniy
Published: May 2020

This article is aimed at a comprehensive analysis of the phenomenon of digitalization as a process of creating a new product in digital form. The leading approach to the study of this problem is to determine the specifics of legal regulation and the presence of a significant number of administrative barriers that prevent the initiative implementation of digitalization elements in individual farms.
WAGE LEGAL SYSTEM BASED ON THE CONCEPT OF THE PANCASILA WELFARE STATE
Authors: Zulkarnaen Ahmad Hunaeni
Published: May 2020

Indonesia as a Welfare State based on Pancasila is tasked with carrying out people's prosperity, the state is allowed to interfere in the private lives of its citizens, one of which interferes in the Employment field including in the wage field, which has a variety of main problems including: Low wages for lower workers, lowest wage gap and highest, Variation in the wage component, Unclear relationship between wages and productivity, Workers' living needs, Social inequality, Work performance, and Human values and self-esteem. So, the purpose of this article is to analyze the legal system of remuneration based on theories and viewpoints of legal goals. The conclusion of this article is that the legal system of remuneration needs to be assessed based on theories of legal objectives such as ethical theory, utility theory and theorizing theory and based on legal objectives from the point of view, namely the point of view of positive-normative or dogmatic juridical law, where the objective of wage law is at emphasize the legal certainty, the point of view of legal philosophy, where the goal of wage law is emphasized in terms of justice, and the viewpoint of the sociology of law, where the purpose of wage law is emphasized on the benefit aspect. The results of the study are based on the theories and the objectives of the legal field, it is expected to be able to describe the wage legal system that can be in line with the ultimate goal of industrial relations, namely “the welfare of all parties (employers and workers)” or the wage legal system that fulfills a decent living for humanity that correlates with company productivity or profit.
ON SOME NON-DERANGED PERMUTATION: A NEW METHOD OF CONSTRUCTION
Authors: I Suleiman , A.I Garba , A Mustafa
Published: May 2020

In this paper, we construct a permutation group via a composition operation on some permutations generated from the structure  for prime and  as defined by [1]. Thus, providing a new method of constructing permutation group from existing ones.
IS TRADE OPENNESS IMPACT ON HEALTH LEVEL RISING? EVIDENCE FROM PANEL DATA ACROSS UPPER-MIDDLE INCOME COUNTRIES
Authors: MANAVGAT Gökçe
Published: May 2020

The transfer of capital and goods, technology and information to other countries through cross-border trade has led to economic integration among countries. This situation has caused the change in the life structure of the individuals in many areas and thus the welfare as well. This change may also affect the health levels of countries. Particularly, with the new technology and knowledge, the methods and practices related to new treatment and diseases to be transferred to countries via foreign trade have played a role in influencing the health levels of countries. In this respect, the importance of trade openness on impact of the level of health in countries also has begun to be discussed. The new discussion area in foreign trade for healthcare is that the trade openness level whether impact on health outcomes for especially in the less development and developing countries.
This study examines the effect of trade openness on the health outcomes of 13 countries in upper-middle income- World Bank classification- Middle East and Asia countries by using a panel data method over 1990-2017. Our finding shows that the trade openness has a statistically significant and positive effect for both health outcomes. In addition, the positive and significant effect of GDP per capita and R&D expenditures share in GDP on health level are also among the other notable results of the study that it has impact on improving the health outcomes through the spillover of new technologies and information with more focus on foreign trade in these countries.
ESCOLHAS TEÓRICO-METODOLÓGICAS
Authors: GAMA HÉLIO FERNANDO LOBO NOGUEIRA DA
Published: May 2020

Realizar um movimento dialético e fenomenológico em busca da essência ou sentido das relações sociais que se estabelecem com o desenvolvimento do turismo em lugares de identidades singulares no Brasil e em Cuba foi a perspectiva metodológica que desenvolvemos e empreendemos em tese de doutorado. Conceituamos turismo como um fenômeno social que se dá pelo deslocamento de pessoas a lugares, expressão da era moderna que envolve a oferta de serviços econômicos de hospitalidade, cuja racionalidade impacta socialmente as comunidades hospedeiras. Compartilhamos a tese que o turismo merece a atenção pelas suas próprias características, mas também enquanto elemento central de diversas mudanças socioculturais e políticas na sociedade contemporânea. Esse enfoque epistemológico e metodológico se fez necessário no sentido de buscar compreender as dimensões do fenômeno a partir do viés de um pesquisador considerado como sujeito situado na investigação. As interpretações da realidade são marcadas pela intersubjetividade que se estabelece no contato/confronto do observador e dos sujeitos sociais em análise. Este contato é, acima de tudo, humanizado, como quando turistas e comunidades hospedeiras se inter-relacionam, descobrem o outro, a alteridade, seres culturalmente diferentes em contato, em convivência. Trata-se de experiência social que se dá em um determinado lugar. O objetivo do presente trabalho é compartilhar princípios e pressupostos teóricos dessa perspectiva metodológica desenvolvida e vivenciada em investigações empíricas em Sociologia do Turismo, afirmando a tese de sua legitimidade dada à adequação com a especificidade do objeto de estudos.
Destino turístico inteligente e a experiência turística:
Authors: Santos Saulo Ribeiro dos , Gonçalves Gândara José Manoel , Lucas Leite Angela Roberta , Gomes de Souza Anderson
Published: May 2020

A experiência turística tornou-se um dos maiores termômetros de medição em um destino turístico, pois, a partir da experiência do visitante é possível compreender como a oferta turística tem promovido impactos positivos na percepção do mesmo sobre o conjunto de produtos e serviços ofertados. Desta forma, destinos turísticos inteligentes utilizam como premissa a identificação desta experiência e sua medição como forma de estar em permanente monitoramento do turista com fim a analisar os dados e informações para que o mesmo esteja em constante atualização e manter-se competitivo no contexto nacional e internacional. Portanto, objetiva-se no presente trabalho compreender a percepção dos turistas quanto à sua experiência durante sua estadia na cidade de São Luís (Maranhão) quanto à oferta turística. Como base metodológica utilizou-se material bibliográfico coletado nas principais bases de dados, e também das indicações do projeto espanhol ao qual este trabalho é resultado. Quanto ao caráter é descritivo e exploratório, e a caracteriza-se também como empírico, onde aplicou-se no campo entre os meses de janeiro a abril de 2017 o questionário com base nas orientações do projeto espanhol. A análise foi qualitativa com o uso de software SPSS. Os resultados apontam que os entrevistados percebem o alto valor patrimonial existente nas construções históricas presente no centro da cidade, assim como identificam que São Luís enquanto capital e destino indutor no estado do Maranhão possui boa infraestrutura em determinados aspectos quanto aos pilares de um destino turístico inteligente. Quanto à experiência turística destacaram que é boa, e, portanto, conclui-se que é fundamental a aplicação de diretrizes públicas e privadas em São Luís para que o destino esteja cada vez mais preparado para atender e superar as expectativas do visitante e também esteja de acordo com as orientações conceituais de desenvolvimento e evolução do destino com foco num modelo de destino turístico inteligente.