bluuebunny/crossref_metadata_2025 huggingface dataset:
Strategic Digital Reality Risks Management Technologies
Authors: Malinetskiy G.G. , Kapelko O.N.
Published: January 2021

A number of strategic risks are taken into account in the formation and development of computer reality. Moreover, we estimated that the possibility of implementing some risks and the likelihood of other risks are significantly underestimated. Nassim Taleb identified various risks as “Black swans” and “Mandelbrot Grey swans”. They are characterized by power laws of probability density distribution, which makes their parameters difficult to predict. We find ourselves in a “fast world” extensively studied in overcoming the “barrier problem”. Artificial intelligence systems are given “last decisions” based on risk results. This use of digital technology is unacceptable. LEM noted: “unheard-of fast cars make mistakes unheard-of fast,” and the cost of an error can affect the fate of humanity too high. International control mechanisms are needed similar to those that in the XX century restrained the quantitative growth and qualitative improvement of nuclear charges and their means of delivery, as well as to create such weapons. The risk analysis is based on the theory of the humanitarian and technological revolution associated with the transition from the industrial to the post-industrial phase of civilization development. There is a gradual transition from the world of things to the world of people. A bifurcation point is set here, after which different trajectories are possible. One of the further trajectories in the terminology of J.Attali is associated with the era of hypercontrol and the formation of hyperimperia. The founder of the Davos economic forum K. Schwab considers this scenario as the main one. The analysis of the trajectory clarifies the huge risks on this path, as well as the need for efforts to preserve the gains of culture and avoid this scenario. Within the framework of the risk management paradigm, specific measures are proposed to avoid many negative consequences of the introduction of digital technologies.
Keywords: digital reality, risk management, strategic deterrence, humanitarian and technological revolution, digital education
Usage of Cellulose Acetate Butyrate Based Oligomeric Structures on Cotton Fabric Coatings
Authors: YILDIZ Zehra , ÖNEN Hacer Ayşen , DEHMEN Ozan Gazi , GÜNGÖR Atilla
Published: January 2021

In this study, the hydroxyl groups of cellulose
acetate butyrate (CAB) oligomer were reacted with toluene diisocyanate-hydroxyethyl
methacrylate (TDI-HEMA) adduct, in order to improve properties of CAB such as
flexibility, thermal stability etc. Then the obtained modified CAB oligomer was
characterized by FTIR and 1H NMR analysis. UV-curable coating
formulations were prepared by using the modified CAB oligomer, and then applied
on cotton fabrics in order to reinforce cotton fabrics and make them durable to
outdoor environments. Cotton fabrics were treated with a commercial washing
detergent, alkali solution, and an enzyme prior to the UV-coating, in order to
increase the adhesion between the cotton fabric and coating layer. Washed and
coated fabrics were evaluated in terms of absorbency, tensile, and adhesion
properties, respectively. Light microscopy was employed to observe the effects
of washing processes on fibre, and to show the abrasion deformation on coated
fabric. Results proved that the best washing process in fibrillation was found
as enzymatic washing due to the having the highest adhesion strength and the
least deformation against abrasion.
Investigation of the situations affecting vocational school students' anxiety levels and academic achievements
Authors: BAYRAKTAR Muhammet , DOĞAN Mehmet
Published: January 2021

Objectives: In this study, we aim to determine the prevalence of anxiety and evaluate its relationship with academic performance in a vocational school of health services students, which causes significant disability and loss of labor and is frequently seen with mood disorders in the society.
Methods: A sample was not selected for the research, it was aimed to reach all students. Of the 1093 students who are attending the school, 849 (77.7%) students participated in the study. In order to determine the level of anxiety in students, a questionnaire form consisting of the Beck Anxiety Inventory and descriptive features were applied by the online survey method.
Results: Of the students; 80.1% are female, 98.1% are single, 57.1% are in their first year, and the average age is 20.25 ± 1.81. The total scale score was found 9.42 ± 8.65 and it was 9.90 ± 8.69 for female students and 7.49 ± 8.24 for male students. Variable levels of anxiety were detected in 38.8% of the participants. There was no statistically significant relation found between anxiety level and academic performance, but both anxiety levels and academic performances were affected by the gender of participants.
Conclusions: Making psychological evaluations of students while they are starting their higher education and checking their statuses periodically using standard self-report tools by using technological instruments; would make it possible to make necessary interventions by noticing the situations that may adversely affect their academic success, social life, mental and cognitive development in the early stages.
The perception concerning the COVID-19 pandemic: case of Turkey
Authors: HOŞGÖR Haydar , AKÖZLÜ Zeynep , GÜNDÜZ HOŞGÖR Derya
Published: January 2021

Objectives: This study aims to evaluate the level of knowledge and perception of the Turkish society about the COVID-19 pandemic.
Methods: This cross-sectional study whose sampling consists of 903 adults.
Results: About half (49.6%) of the participants' information sources about COVID-19 composed of printed and visual media tools such as television, radio, newspaper, etc. 57.5% of the participants stated that their self-knowledge levels about COVID-19 were at a good level, whereas 19.7% of them at a very good level. 64.4% of the participants stated that their health would be seriously damaged if they get this virus; 58.9% of them thinks that this virus will severely damage their place of the resident; 50.9% of them stated that they trust that this crisis will be handled effectively by the health authorities of Turkey. Participants rated themselves an average of 8.7 points on compliance with COVID-19 measures. It was found that the participants had a 55% confidence in the Coronavirus Scientific Advisory Board (Turkey) and the World Health Organization (WHO) regarding COVID-19.
Conclusions: Like all over the world, health authorities also in Turkey have taken several measures in the context of fighting against the pandemic and they expect society to comply with these measures. The fact that individuals in the society fulfill their individual responsibilities by confirming the accuracy of the information took place in printed/visual and social media from reliable sources is an important factor in reducing the effects of infectious diseases.
Farming with drip sea water irrigation for Salicornia production in Tierra del Fuego, Argentina
Authors: Oscar Bianciotto Oscar Bianciotto , Fernando Aras Martin Fernando Aras Martin , Luciano Selzer Luciano Selzer , Jesús Ortega García Jesús Ortega García , Gea Pandita Gea Pandita , Leonor Angelica Galindo Cárdenas Leonor Angelica Galindo Cárdenas , Aldo Robledo Aldo Robledo , Rueda Puente Edgar Omar
Published: January 2021

Farming for the sustainable production of halophyte crops should begin with the popular knowledge of saline and beneficial plants. On this way, the use of drip irrigation with seawater supply for the production of the halophytic specie Salicornia magellanica was evaluated in a small-scale culture in three growth periods; a randomized design of fifteen plantings were developed in each treatment (n=15), with two irrigation flows in two plant stages (two and seven months of initial pre-planting growth in pots). At the same time, another hydroponic growing experiment was carried out with four different concentrations of seawater (0 – 11 – 20 – 33 g.L of salts) to determine the optimal concentration. The irrigation flow showed different effects on the production parameters and plant age, where the highest yields were recorded in more developed plants in the third season. In the hydroponics with sea water those with low concentration, had a greater and significant values in survival of plants, largest length and number of shoots. These results made it possible to model the consumption of seawater for crops in Tierra del Fuego, Argentina optimizing its use in order to reduce the cost of the provision of seawater for micro crops far from the sea coast.
Tool Materials for Turning Machine-Building Stainless Steel 09Kh17N7Yu
Authors: Mokritskiy B.Y. , Sitamov E.S.
Published: January 2021

Hard-to-process specialized stainless steel grade 09Kh17N7Yu has become widely used in various fields of mechanical engineering due to its unique performance properties. The existing recommendations for its processing are outdated and do not meet modern requirements for the performance of metal-cutting tools. This necessitated the need to develop recommendations for modern high-performance machine tools. The paper presents methods of solving this problem based on the example of turning by typical domestic replaceable hard-alloyed cutting plates. Relationships between the tool wear and the operating time were obtained. Design solutions for tool materials to be used under specified operating conditions were developed. A significant outcome of the paper was the use of simulation modeling in the Deform software environment, which allowed the authors to develop new coatings for the hard alloy VK8, which provided a significant (up to 3 times) increase in tool life. Using modelling, it was also possible to design new tool materials for new or expected operating conditions. The following main criteria sufficient for modeling were identified: tool wear, temperature in the cutting zone, stresses in the tool material and deformation of the tool material. The results obtained can be used as the basis for the so-called data bank, which can be used in production enterprises.
Calculating the Load on the Rod Suspension in Unsteady Oscillation Motion of the Well Pumping Unit Rods
Authors: Mamedov V.T. , Aslanov D.N. , Damirova D.R.
Published: January 2021

The efficiency of a rod pumping unit is determined by the straightness of its rod string, which is impacted by the load when the rod string is in motion. Determining the dependence of the load impacting the rod suspension on the dynamic forces is one of the major issues in ensuring its straightness. In order to provide equal distribution of the stresses along the entire length of the polished rod under dynamic loading, it is necessary to determine the load on its surface, which is impossible without the equation of unsteady motion of the rod string. To this end, the article examines the issues related to the equation of unstable motion of well pumping unit rods. Formulae for calculating the loads acting on the rod suspension point are derived, and the equation of the rod string motion and load on the polished rod after the initial deformation is obtained.
Sensors of Rapidly Changing Pressure Based on Jet Force
Authors: Makarov V.A. , Korolev F.A. , Tyutyaev R.E.
Published: January 2021

Static and dynamic characteristics of rapid response pneumatic digital systems are determined with the help of pneumatic-galvanometric sensors that consist of pneumatic optical converters, electrical bridge circuits and magnetoelectric galvanometers. This paper presents theoretical and experimental studies of the pneumatic optical converter whose mode of operation is based on the jet force effect on a plate of limited dimensions commensurate with the dimensions of the contact area between the jet and the plate. The investigations are based on the equality of moments of the jet force and the counter-moment of the rod that the plate is fixed on. The sensitivity and other static characteristics of the converter (linearity, measurement rage) as well as other parameters necessary for interpreting the readings, calculating errors and calibrating the scale are determined. The natural frequency is sufficient to control dynamic processes controlled by pneumatic systems. For the design of converters, it is proposed to use the aggregate criterion of the quality factor that equals the product of the sensitivity and the natural frequency squared. The performed calculations are verified by experiments.
A Comparative Assessment of Tribotechnical Characteristics of Solid Lubricant Coatings Deposited Using the Closed Field Unbalanced Magnetron Sputtering Ion Plating Technique for Various Operating Conditions
Authors: Khopin P.N. , Silchenko O.B.
Published: January 2021

This paper presents a comparative assessment of the tribotechnical characteristics of friction pairs with solid lubricant coatings (SLC) based on the MoS2 suspension application of VNII NP 212 and SLCCFUBMSIP deposited by the closed field unbalanced magnetron sputter ion plating (CFUBMSIP) of combined compositions MoS2+Ti, MoS2+Zr, MoS2+Cr , MoS2+W. It was established that under normal atmospheric conditions in the friction modes corresponding to the contact friction temperature of 157 °С, the life of SLCCFUBMSIP was 42.1% higher, and the coefficient of friction (ffr) was on average 2 times lower than that of SLC VNII NP 212. The average value of the life reduction coefficient for SLCCFUBMSIP during the transition from normal atmospheric conditions to water was 2.98. Under normal atmospheric conditions and in water, the SLCCFUBMSIP coefficient of friction was in the range of 0.02–0.04, and in an oil environment it ranged from 0.03 to 0.08. SLCCFUBMSIP based on pure MoS2 in normal atmospheric conditions, in water and oil was practically unusable.
Społeczne, demograficzne, ekonomiczne i geograficzne uwarunkowania zarządzania budżetem domowym w Polsce
Authors: Abramczyk Damian
Published: January 2021

Podstawowym zadaniem gospodarstw domowych jest wydatkowanie, a tym samym zaspokajanie potrzeb jego użytkowników. Każdy z nas, bez względu na wiek, płeć, sytuację osobistą czy zdrowotną tworzy gospodarstwa domowe, wydatkuje, generuje dochody do budżetu rodziny. Na przestrzeni lat proces zarządzania dochodami i wydatkami ewoluował. W dzisiejszych czasach, w dobie ogólnego dostępu do informacji zmiany te są bardzo istotne. Jednak czy jesteśmy świadomi zmian w strukturze gospodarowania budżetem domowym oraz jego wpływie na społeczeństwo? W poniższym artykule przedstawiona zostanie struktura zmian w zarządzaniu budżetem gospodarstw domowych w ujęciu demograficznym, ekonomicznym oraz społecznym w oparciu o dane statystyczne, empiryczne oraz dostępną literaturę naukową. Przedstawione zostaną wyniki badań Fundacji Kronenberga przy banku Citi Handlowy, dotyczące koniunktury gospodarstw domowych oraz postaw Polaków wobec finansów. Zostanie wybrany również najkorzystniejszy wariant zarządzania budżetem domowym oraz zostaną przedstawione wskazówki mające na celu upowszechnienie oraz usprawnienie procesu gospodarowania budżetem domowym.
Sources of Income among Polish Students from Silesian Region, their Attitude to Saving, Investing and risk
Authors: Kałuża Wioleta , Brocka Dagmara
Published: January 2021

The purpose of this article is to examine the attitude to saving, investing and risk of students, as an important group of potential clients of financial institutions. Students who are just entering the financial markets and are getting familiar with the offer constitute a large potential target group. In this paper, published research show how students manage their funds from various sources, as well as their willingness to use the savings and investment offer. It is also shown to what extent students use the offer available, their attitude to using the offer and their financial awareness which has an impact on the complacency on the financial markets.
Edukacja w zakresie funkcjonowania systemu podatkowego jako przejaw ochrony praw podatnika
Authors: Ołówko Natalia
Published: January 2021

Artykuł ma na celu przybliżenie praw przysługujących podatnikom zawartych zarówno w ustawie zasadniczej, jak i w Ordynacji podatkowej oraz skonfrontowanie ich ze stopniem wiedzy podatników o podstawach funkcjonowania systemu podatkowego. Pokazanie, jak istotny jest problem nieświadomości społeczeństwa w kontekście znajomości podatków na podstawie wyników przeprowadzonych badań ma również zwrócić uwagę na potrzebę przeprowadzania akcji i inicjatyw edukacyjnych. Projekty tego typu, przeprowadzane głównie przez Ministerstwo Finansów i Krajową Izbę Doradców Podatkowych są niezwykle istotne i powinny zostać zintensyfikowane w ramach zwiększania świadomości podatników o obowiązkach oraz prawach, jakie im przysługują. W artykule zostają wymienione również przykłady takowych inicjatyw mających miejsce w przeszłości.
Ocena zmian w zakresie cen transferowych w Polsce i ich wpływ na obowiązki podatników
Authors: Przydatek Karol
Published: January 2021

W ostatnim czasie miały miejsce duże zmiany w zakresie cen transferowych zwiększające wymogi dokumentacyjne wielu przedsiębiorstw. Jak każde zmiany prawne, mają one przynieść określone efekty. Historia cen transferowych w Polsce sięga już pierwszej połowy dwudziestego wieku i można zauważyć sukcesywny rozwój przepisów w ich zakresie. Ostatnio wprowadzone przepisy dotyczące cen transferowych przyczyniły się do zmiany zakresu obowiązków dla poszczególnych grup podatników. W niniejszej pracy zostaną poddane analizie zmiany w zakresie cen transferowych i ich wpływ na obowiązki podatników.
Efektywność inwestycji na rynku kryptowalut i inwestycji na rynku giełdowym – ujęcie porównawcze
Authors: Wyderka Dominika , Saganowski Tomasz
Published: January 2021

W internetowym świecie coraz częściej wykorzystywane są systemy wirtualnych walut. Do najbardziej popularnych i zdecentralizowanych należy bitcoin. Celem artykułu będzie ocena opłacalności inwestycji na dwóch różnych rynkach – giełdowym oraz rynku kryptowalut. W pracy podjęto również próbę scharakteryzowania kryptowaluty bitcoin.
Rzecznik Finansowy – analiza działalności w zakresie alternatywnych metod rozstrzygania sporów
Authors: Liwoch Piotr
Published: January 2021

Artykuł traktuje o stosunkowo nowym podmiocie – Rzeczniku Finansowym – który przede wszystkim podejmuje działania na rzecz ochrony klienta indywidualnego korzystającego z usług podmiotów rynku finansowego. W niniejszej publikacji autor przedstawia, ujętą w ustawie z dnia 5 sierpnia 2015 r. o rozpatrywaniu reklamacji przez podmioty rynku finansowego i o Rzeczniku Finansowym, procedurę postępowania reklamacyjnego, a także podejmuje próbę analizy działalności Rzecznika Finansowego w obszarze alternatywnych metod rozstrzygania sporów oraz przedstawia postulaty w zakresie rozwoju tej instytucji w kolejnych latach. Celem niniejszego artykułu jest porównanie i ukazanie podobieństwa funkcji i zadań Rzecznika Finansowego z Rzecznikiem Ubezpieczonych w kontekście ewolucji instytucji prawnych, a także przedstawienie kompetencji Rzecznika Finansowego w obszarze ADR.
Pranie pieniędzy w świetle regulacji finansowych
Authors: Jaszek Tomasz
Published: January 2021

Proceder prania pieniędzy zalicza się do kategorii przestępstw o charakterze gospodarczym. Skala tego zjawiska stanowi temat wielu dyskusji i rozważań na arenie międzynarodowej. Światowe organizacje takie jak OECD czy FATF podejmują liczne inicjatywy wobec realnego zagrożenia dla rynku finansowego. Efektem współpracy międzynarodowej jest opracowanie przez Unię Europejską istotnej regulacji prawnej, rozpoznawanej jako Dyrektywa AML IV, którą państwa członkowskie obowiązane są wprowadzić do krajowego porządku prawnego. Konceptem unijnej regulacji jest wzmocnienie spójności oraz wiarygodności sektora finansowego Wspólnoty. Także w Polsce zostały opracowane rozwiązania prawno-instytucjonalne, których zamysłem jest skuteczne i efektywne zwalczanie procesu prania pieniędzy. Celem niniejszego artykułu jest przegląd polskich rozwiązań regulacyjnych mających na celu przeciwdziałanie procederowi prania pieniędzy.
TIEMPO DE INTERRUPCIÓN DE NEGOCIOS EN LA CIUDAD DE MÉXICO POR DAÑOS DIRECTOS Y EFECTOS INDIRECTOS EN EDIFICIOS A CAUSA DEL SISMO DEL 19S DE 2017
Authors: Ortiz Soto David , Reinoso Angulo Eduardo
Published: January 2021

Después del sismo ocurrido el 19 de septiembre de 2017 en México, una gran cantidad de negocios establecidos en la Ciudad de México dejó de operar temporalmente e incluso de forma definitiva. De acuerdo con lo observado tras este evento destructivo, en este trabajo se identifican las fuentes de interrupción del negocio: Protocolos de seguridad iniciales, Suspensión de servicios públicos de suministro, Efectos de vecindario y Daños en los componentes del edificio, y se propone un modelo para determinar el tiempo de interrupción de negocio, IN, con base en la inactividad de la edificación. Con la finalidad de tener valores de referencia para los datos de entrada, se documentan los tiempos de evaluación de edificios, restablecimiento de servicios públicos, demolición de edificios, entre otros aspectos relevantes para la CDMX. Finalmente, los conceptos se ejemplifican con un negocio formal hipotético establecido en una edificación de dos niveles de mampostería confinada y en los resultados se obtiene que habría una paralización total de las actividades empresariales por más de un mes debido a daños menores en la infraestructura de energía eléctrica y algunos daños estructurales en la planta alta. Además, se concluye que, aunque la interrupción de negocios depende de múltiples factores, la participación de los Ingenieros Estructuristas es trascendental para minimizar el tiempo de IN, especialmente en la evaluación de la seguridad de los edificios y la rehabilitación de las infraestructuras.
IDENTIFICACIÓN DE MODOS DE TORSIÓN EMPLEANDO LA MEDICIÓN DE VIBRACIONES AMBIENTALES Y EL ANÁLISIS ESPECTRAL EN DOS EDIFICIOS DE CONCRETO REFORZADO
Authors: Godfrey Montero Richard , Schmidt Díaz Víctor , Esquivel Salas Luis Carlos , Liu Kuan Yi Cheng
Published: January 2021

En esta investigación se realizó un análisis espectral de la respuesta estructural de dos edificios de concreto reforzado, de 18 m y 56 m de altura y con distintos niveles de irregularidad en planta, al ser sometidos a vibraciones ambientales. Específicamente, se han usado el método básico (BFD) y de descomposición en el dominio de la frecuencia (FDD) sobre registros de vibración ambiental adquiridos mediante tres acelerómetros triaxiales para la identificación de las frecuencias y los modos naturales de vibración. Para cada edificio se identificaron al menos tres modos de vibración en un rango de frecuencias comprendido entre 1,0 Hz y 6,0 Hz. Los modos con mayor densidad espectral fueron exhibidos entre las frecuencias de 1,0 Hz y 3,0 Hz. De las formas modales, se evidenció que, entre más irregularidad en planta, mayor será la presencia de modos de torsión y el acoplamiento de estos con modos de flexión.
EVALUACIÓN INTEGRAL DE LA SEGURIDAD ESTRUCTURAL DE EDIFICACIONES EXISTENTES DAÑADAS POR SISMOS DE GRAN MAGNITUD
Authors: Razo Carrasco Daniela Giovanna , Domínguez Octavio García
Published: January 2021

Se presenta una metodología para realizar una evaluación integral de la seguridad estructural de edificaciones de concreto reforzado existentes, afectadas por sismos intensos con base en trabajos de campo y resultados de análisis numéricos. También puede ser aplicada a construcciones nuevas sobre las cuales se tengan incertidumbres de su integridad o comportamiento estructural, o bien a estructuras que han sido reforzadas y se desea verificar la eficacia de este. La metodología incluye recomendaciones para el monitoreo del deterioro de la rigidez lateral y la integridad estructural, a través de la evolución de los parámetros que caracterizan el comportamiento dinámico estructural.
Natalia Sergéyevna Goncharova
Authors: Tejedor Estupiñan Ricardo Alonso
Published: January 2021

Fue una representante principal del movimiento de vanguardia de la pintura rusa, así como pionera y fundadora el denominado neoprimitivismo, en el cual evocó parte de la iconografía tradicional ortodoxa cristiana y, a su vez, de temas judíos y medievales.
Evidence-Based Approaches in Children with Hypothermia
Authors: MİSYAĞCI Nazlı Melis , HAYLI Çiğdem Müge
Published: January 2021

The normal level of functioning of various metabolic processes in our body depends on normal body temperature. It is very important to maintain the patient's normal body temperature before, during, and after surgery to prevent possible complications. The occurrence of postoperative hypothermia is higher than hyperthermia. Pediatric hypothermia is a condition that needs to beprevented. Today, the use of various methods helps to prevent hypothermia; and guidelines exist for the prevention and management of hypothermia, supported by research that makes this process more reliable. With this mini-review, we aim to create a common multidisciplinary approach to prevent hypothermia. This study is about the current views addressing the maintenance of normal body temperature and discusses the risk factors predisposing to hypothermia and the goals of evidence-based hypothermia management in pediatric patients.
A meta-analysis on STEM studies in early childhood education
Authors: YÜCELYİĞİT Seçil , TOKER Zerrin
Published: January 2021

The increasing number of studies on the STEM approach necessitates a holistic and comparative evaluation of the results. This study aims to investigate and evaluate the cumulative results of the experimental studies used STEM approach for preschool children. In this study, the meta-analysis method was used. Despite a great number of studies about STEM education, only a limited number of studies were accessed by the keywords “preschool”, “early childhood” and “experimental study”. The effect size obtained (0.556) is at a level that can be considered as moderate according to the classification used in meta-analysis studies. STEM studies aimed at preschool children have positive effects on children's learning and development. However, more experimental studies on STEM in the preschool field are needed. It can be suggested that preschool teachers can be encouraged to design and implement STEM practices in their class. For further research, the results of the meta-analysis can be supported by content analysis, and a similar study can be conducted for the other grade levels.
Some questions of the analysis of mappings of metric and partially ordered spaces
Authors: Zhukovskaia Tatiana V. , Zhukovskiy Evgeny S. , Serova Irina D.
Published: January 2021

The questions of existence of solutions of equations and attainability of minimum values of functions are considered. All the obtained statements are united by the idea of existence for any approximation to the desired solution or to the minimum point of the improved approximation. The relationship between the considered problems in metric and partially ordered spaces is established. It is also shown how some well-known results on fixed points and coincidence points of mappings of metric and partially ordered spaces are derived from the obtained statements. Further, on the basis of analogies in the proofs of all the obtained statements, we propose a method for obtaining similar results from the theorem being proved on the satisfiability of a predicate of the following form. Let (X,≤) − be a partially ordered space, the mapping Φ:X×X→{0,1} satisfies the following condition: for any x∈X there exists x^'∈X such that x^'≤x and Φ(x^',x)=1. The predicate F(x)=Φ(x,x) is considered, sufficient conditions for its satisfiability, that is, the existence of a solution to the equation F(x)=1. This result was announced in [Zhukovskaya T.V., Zhukovsky E.S. Satisfaction of predicates given on partially ordered spaces // Kolmogorov Readings. General Control Problems and their Applications (GCP–2020). Tambov, 2020, 34-36].
Elements of analytical solutions constructor in a class of time-optimal control problems with the break of curvature of a target set
Authors: Lebedev Pavel D. , Uspenskii Alexander A.
Published: January 2021

A planar velocity control problem with a disc indicatrix and a target set with a smooth boundary having finite discontinuities of second-order derivatives of coordinate functions is considered. We have studied pseudo-vertices-special points of the goal boundary that generate a singularity for the optimal control function. For non-stationary pseudo-vertices with discontinuous curvature, one-way markers are found, the values of which are necessary for analytical and numerical construction of branches of a singular set. It is proved that the markers lie on the border of the spectrum-the region of possible values. One of them is equal to zero, the other takes an invalid value -∞. In their calculation, asymptotic expansions of a nonlinear equation expressing the transversality condition are applied. Exact formulas for the extreme points of branches of a singular set are also obtained based on markers. An example of a control problem is presented, in which the constructive elements are obtained using the developed methods (pseudo-vertex, its markers, and the extreme point of a singular set), are sufficient to construct a singular set and an optimal result function in an explicit analytical form over the entire area of consideration.
Tópicos e diversidade temática em Biblioteconomia e Ciência da Informação
Authors: Santos Gildenir Carolino Santos
Published: January 2021

O novo cenário que estamos vivenciando tem nos chamado a repensar o papel da editoração científica como suporte educacional à universidade, pois, em uma sociedade organizada em torno das Tecnologias digitais e informacionais e comunicacionais, nunca esteve tão presentes neste momento de pandemia para que ela possa aprimorar e desenvolver  recursos informacionais online das publicações para atender as necessidades editoriais da comunidade usuária interna e externa, visto que as bibliotecas universitárias estão cumprindo esse papel na sociedade conectada, pois são fundamentais para a produção do conhecimento científico. Desse novo panorama, damos início a este editorial comemorando e celebrando mais uma edição concluída da RDBCI como publicação contínua em 2020, vinculada ao Sistema de Bibliotecas de uma instituição pública e reconhecida mundialmente. É com este impacto que destacamos que no momento atual as bibliotecas universitárias, como sempre fizeram e continuam, estão colaborando e participando ativamente da construção de textos e auxiliando para o crescimento da editoração científica e aumento da produção científica neste momento tão diferenciado.
TERAPI FOTODINAMIK ANTIMIKROBA: PROSPEK BARU DALAM PENANGANAN PANGAN?
Authors: Indrawati Renny , Lolita Amelia Myristi , Limantara Leenawaty
Published: January 2021

Terapi fotodinamik antimikroba merupakan kombinasi reaksi fisika dan kimia yang melibatkan interaksi antara sensitizer, cahaya, dan oksigen, untuk menghasilkan spesi oksigen reaktif yang dapat memicu kematian sel mikroba. Sensitizer merupakan senyawa kimia yang dapat teraktivasi oleh cahaya. Senyawa yang dapat digunakan sebagai sensitizer antara lain adalah dari kelompok zat warna dengan struktur trisiklik (riboflavin, metilen biru, eritrosin), tetrapirol (klorofil, porfirin, ftalosianina), serta fukokoumarin (psoralen, ksantotoksin). Cahaya yang digunakan tidak terbatas pada rentang ultra-violet, sebagaimana telah banyak diaplikasikan pada metode disinfeksi, tetapi juga dapat berasal dari rentang panjang gelombang cahaya tampak. Pembentukan spesi oksigen reaktif dapat melalui jalur mekanisme transfer energi ataupun transfer elektron. Metode inaktivasi mikroba secara fotodinamik menawarkan perlakuan tanpa panas, waktu kerja yang singkat, meminimalkan kemungkinan berkembangnya resistensi mikroba, serta ramah lingkungan. Kajian pustaka ini akan membahas tentang komponen terapi fotodinamik antimikroba, mekanisme reaksi, perkembangan penelitian di dalam dan luar negeri, serta prospek aplikasinya dalam penanganan pangan.
BIOSINTESIS NANOPARTIKEL EMAS MENGGUNAKAN EKSTRAK ETANOL DAUN JAMBU BOL PUTIH
Authors: GM Astri Wiyani , Putri Suriati Eka , Syahrir Muhammad
Published: January 2021

Penelitian ini bertujuan untuk mengetahui volume bioreduktor yang sesuai untuk pembentukan nanopartikel emas serta mengetahui karakteristik nanopartikel emas yang dihasilkan. Larutan HAuCl4 25 ppm direduksi menggunakan ekstrak etanol daun jambu bol putih dengan metode microwave dan tanpa microwave selama 120 detik pada suhu 80o C. Penentuan waktu reaksi optimum menggunakan spektrofotometer UV-Vis pada beragam variasi waktu dimana ekstrak daun jambu bol putih mereduksi Au menjadi Auo. Karakterisasi nanopartikel emas menggunakan instrumen scanning electron microscope dan X-Ray Difraction.  Hasil penelitian menunjukkan bahwa volume optimum untuk pembentukan AuNP adalah pada volume 0,75 mL karena memiliki absorbansi dan tingkat kestabilan yang tinggi. Morfologi Nanopartikel yang dihasilkan tidak seragam, beragregasi, berbentuk kubik (FCC) dan ukuran yang dihasilkan rata-rata 17,13 nm.
UJI KUALITATIF FLAVONOID, ALKALOID, TANIN PADA KOMBINASI KUNYIT (CURCUMA LONGA) COKLAT (THEOBROMA CACAO L)
Authors: Khanifah Farach , Puspitasari Evi , S Awwaludin
Published: January 2021

Kunyit merupakan tanaman yang memiliki aktivitas biologi salah satunya dapat berfungsi sebagai antibakteri, antiinflamasi dan antidepresan. Coklat masuk ke Indonesia pada zaman Belanda dan menjadi minuman yang digemari oleh masyarakat Indonesia. Senyawa yang terkandung dalam coklat seperti flavonoid, epitaken, katekin, kafein dll. Manfaat coklat sebagai antioksidan, antidepresi dll. Beberapa penelitian melaporkan bahwa senyawa metabolit skunder yang sering dijadikan sebagai indikator aktivitas biologi tanaman adalah flavonoid, alkaloid dan tanin. Pada penelitian menggunakan rimpang kunyit yang berusia 9 bulan dan biji coklat (kakao) yang telah di panen. Penelitian ini bertujuan untuk uji kualitatif flavonoid, alkaloid dan tanin dari kunyit, coklat dan kombinasi kunyit coklat (1:1). Kunyit dan coklat tersebut di maserasi dengan menggunakan pelarut etanol 96%. Sampel yang di ekstraksi dengan perbandingan 1:10 , serbuk halus kunyit sebanyak 1000 gram dan didapatkan Ekstrak kental etanol 52,9% serbuk halus biji coklat sebanyak 1000 gram dan didapatkan 38,7% ekstrak kental etanol. Hasil uji kualitatif ekstrak etanol Coklat mengandung senyawa alkaloid,  flavonoid dan tanin. Ekstrak etanol Kunyit positif mengandung senyawa flavonoid, tanin dan tidak mengandung senyawa alkaloid. kombinasi coklat kunyit (1:1) positif flavonoid, tanin dan negatif alkaloid.
PERBANDINGAN METODE POTENSIOMETRI DAN SPEKTROFOTOMETRI PADA PENENTUAN FORMALIN
Authors: Umaningrum Dewi , Nurmasari Radna , Astuti Maria Dewi
Published: January 2021

Penelitian tentang penentuan formalin menggunakan metode potensiometri dan spektrofotometri telah dilakukan. Tujuan dari penelitian ini adalah untuk membandingkan hasil pengukuran kadar formalin antara metode potensiometri dengan metode standar spektrofotometri. Metode penelitian diawali dengan membuat sensor formalin yang digunakan untuk mengukur kadar formalin menggunakan selulosa asetat sebagai ionofor. Tahap berikutnya adalah mengukur kadar formalin sampel menggunakan sensor dan metode standar spektrofotometri. Hasil pengukuran kadar formalin kemudian dibandingkan diantara kedua metode tersebut. Hasil penelitian menunjukkan bahwa konsentrasi formalin yang terukur menggunakan metode spektrofotometri sebesar 1,275; 2,071 dan 2,978 ppm, sedangkan menggunakan metode potensiometri sebesar 1,40; 2,08 dan 3,07 ppm. Berdasarkan perhitungan didapatkan harga thitung < ttabel untuk DB(n–2) menunjukkan tidak ada perbedaan yang bermakna antara metoda potensiometri dengan metoda spektrofotometri pada penentuan formalin.Kata kunci: formalin, spektrofotometri, potensiometri
SINTESIS BEADS KITOSAN TERIKAT-SILANG TRIPOLIOSFAT DENGAN PENAMBAHAN POROGEN UNTUK ABSORPSI ASAM HUMAT
Authors: Askia Jihan , Ariyani Dahlena , Santoso Uripto Trisno
Published: January 2021

Sintesis beads kitosan-TPP untuk absorpsi asam humat telah dilakukan. Penelitian ini bertujuan untuk mengetahui pengaruh konsentrasi TPP, porogen (NaHCO3), persentase penggembungan dan kapasitas absorpsi. Beads kitosan-TPP disintesis dengan meneteskan larutan kitosan 2% (b/v) ke dalam larutan tripolifosfat. Beads kitosan-TPP kemudian dikarakterisasi stabilitas, porositas, persentase pembengkakan, serta penentuan kapasitas absorpsi. Hasil penelitian menunjukkan penambahan TPP dengan konsentrasi 0,75% (b/v) menunjukkan stabilitas beads kitosan-TPP yang baik, penambahan porogen (NaHCO3) menghasilkan pori yang lebih besar pada beads kitosan-TPP, persentase swelling terbesar adalah 76,51%, dan kapasitas aborpsi asam humat pada beads kitosan-TPP pada λmaks 200 nm adalah 25% atau 1,50 (mg/g) dan pada λmaks 400 nm 66,57% atau 11,34 (mg/g).
TINDAK BAHASA GURU DALAM PEMBELAJARAN BAHASA INDONESIA DI KELAS VIII SMPN 7 BANJARMASIN
Authors: Khairunnisa  , Fatah Yasin Moh. , Noortyani Rusma
Published: January 2021

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HUBUNGAN BUDAYA MEMBACA DENGAN HASIL BELAJAR BAHASA INDONESIA PESERTA DIDIK KELAS XII SMAN 4 BANJARMASIN
Authors: Cayu Dahniar Hestira , Hermawan Sainul , Noortyani Rusma
Published: January 2021

Penelitian ini bertujuan mendeskripsikan budaya membaca serta hasil pembelajar lalu mendeskripsikan hubungan budaya membaca dengan hasil belajar peserta didik di SMAN 4 Banjarmasin. Metode penelitian menggunakan metode deskriptif kuantitatif. Teknik analisis yang digunakan pada penelitian ini, yaitu korelasi product moment. Hasil analisis menunjukkan: (1) skor rata-rata budaya membaca peserta didik sebesar 108,55 dan tergolong dalam kategori sedang; (2) nilai rata-rata (mean) hasil belajar peserta didik sebesar 79,26 dan tergolong kategori sedang; (3) terdapat perolehan koefisien positif dan signifikan dengan angka korelasi sebesar 0,513. Hasil korelasi ini tergolong hubungan yang agak rendah karena angka koefisien korelasi terdapat pada selang 0.400-0.600. Berdasarkan hasil analisis di atas, Ha diambil dan Ho dibuang. Ha yang diambil dalam penelitian: ada hubungan yang baik dan relevan antara budaya membaca dengan hasil belajar Bahasa Indonesia.
KEMAMPUAN MENGANALISIS STRUKTUR TEKS CERAMAH MENGGUNAKAN MEDIA YOUTUBE PADA PESERTA DIDIK KELAS XI IPS 1
Authors: Aprianty Desi , Effendi Rustam , Hermawan Sainul
Published: January 2021

Penelitian ini bertujuan untuk mengukur kemampuan menganalisis struktur  teks ceramah menggunakan media youtube pada peserta didik kelas XI IPS 1. Metode yang digunakan pada penelitian ini adalah metode deskriptif dan jenis penelitian yang digunakan adalah kuantitatif. Penelitian ini berupa hasil kerja peserta didik menjawab soal stuktur teks dengan pokok bahasan teks ceramah. Penelitian ini diambil di kelas XI IPS 1 SMAN 4 Banjarmasin. Teknik pengumpulan data melalui observasi dan tes. Kemudian langsung dianalisis dengan teknik analisis deskriptif kuantitatif. Hasil kemampuan menganalisis struktur teks ceramah peserta didik menunjukkan bahwa nilai mean yang didapat adalah 82,1 berada dalam kategori tinggi. Pada aspek pokok bahasan setiap paragraf, nilai mean yang didapat adalah 78,1 berada dalam kategori cukup. Pada aspek menyusun struktur teks ceramah, nilai mean yang didapat adalah 78,0 berada dalam kategori cukup.
KEMAMPUAN MENULIS TEKS PROSEDUR OLEH PESERTA DIDIK KELAS VII SMP MUHAMMADIYAH 1 BANJARMASIN TAHUN AJARAN 2018-2019
Authors: Rakhmi Yunita , Zulkifli  , Alfianti Dewi
Published: January 2021

Penelitian ini bertujuan untuk mendeskripsikan proses pembelajaran dan mendeskripsikan hasil kemampuan menulis teks prosedur peserta didik kelas VII SMP Muhammadiyah 1 Banjarmasin. Jenis penelitian ini menggunakan dekriptif kuantitatif. ‘Dalam proses pembelajaran guru tidak sepenuhnya berpedoman pada RPP. Hasil penelitian menunjukkan peserta didik memperoleh nilai rata-rata 73,75 (56%) dalam menulis teks prosedur. Peserta didik yang belum mencapai ketuntasan 11 orang (44%), sedangkan peserta didik yang telah mencapai ketuntasan 14 orang (56%) dari seluruh sampel yang berjumlah 25 peserta didik. Maka kemampuan menulis peserta didik kelas VII SMP Muhammadiyah 1 Banjarmasin tidak tuntas secara  penilaian klasikal.
Investigation of the Safety of Radiopaque Compounds Based on Notification Cards on Adverse Reactions Registered in the Republic of Crimea
Authors: Matveev A. V. , Krasheninnikov A. E. , Egorova E. A.
Published: January 2021

Objective. At the present stage of medicine development, the use of X-ray contrast agents tends to grow constantly and more than 60 million doses of radiopaque compounds (ROCs) are annually used.The objective of the study was to investigate adverse reactions (ARs) arising from the use of ROCs in patients living in the Republic of Crimea.

Material and methods. The objects of the study performed were 69 notification cards on ARs to ROCs, which were registered in the regional database (registry) of spontaneous messages called ARCADe (Adverse Reactions in Crimea, Autonomic Database) in 2009–2018.

Results. A larger number of cases of ARs identified in the Republic of Crimea were due to the administration of water-soluble low-osmolar ROCs (iohexol, iopromide, iodixanol) to patients for kidney examination. The main clinical manifestations were immediate hypersensitivity reactions. The number of ARs posing a threat to a patient’s life exceeded 30% of all cases of ARs registered in the Republic of Crimea. Twelve patients (17.4%) required hospitalization or its prolongation to relieve an emerging AR; temporary disability due to ARs to ROCs were observed in 2 cases. The measures to reduce the severity of ARs included drug discontinuation and correction in 65 cases (94.2%). A drug suspected of causing ARs was not discontinued in 3 cases (4.3%); however, additional drugs were needed to correct the ARs.

Conclusion. Investigating the safety of ROCs on the basis of analyzing the notification cards on ARs registered in the Republic of Crimea in 2009–2018 could confirm the severity and seriousness of these reactions established by other researchers, which requires an individual approach to choosing a ROC, its dose, as well as monitoring of a patient’s health status both during the administration of agents and soon after the end of diagnostic procedures using ROCs.
Preoperative Risk Prediction Models for Short-Term Revision and Death After Total Hip Arthroplasty
Authors: Venäläinen Mikko S. , Panula Valtteri J. , Klén Riku , Haapakoski Jaason J. , Eskelinen Antti P. , Manninen Mikko J. , Kettunen Jukka S. , Puhto Ari-Pekka , Vasara Anna I. , Mäkelä Keijo T. , Elo Laura L.
Published: January 2021

Background:

Because of the increasing number of total hip arthroplasties (THAs), even a small proportion of complications after the operation can lead to substantial individual difficulties and health-care costs. The aim of this study was to develop simple-to-use risk prediction models to assess the risk of the most common reasons for implant failure to facilitate clinical decision-making and to ensure long-term survival of primary THAs.

Methods:

We analyzed patient and surgical data reported to the Finnish Arthroplasty Register (FAR) on 25,919 primary THAs performed in Finland between May 2014 and January 2018. For the most frequent adverse outcomes after primary THA, we developed multivariable Lasso regression models based on the data of the randomly selected training cohort (two-thirds of the data). The performances of all models were validated using the remaining, independent test set consisting of 8,640 primary THAs (one-third of the data) not used for building the models.

Results:

The most common outcomes within 6 months after the primary THA were revision operations due to periprosthetic joint infection (1.1%), dislocation (0.7%), or periprosthetic fracture (0.5%), and death (0.7%). For each of these outcomes, Lasso regression identified subsets of variables required for accurate risk predictions. The highest discrimination performance, in terms of area under the receiver operating characteristic curve (AUROC), was observed for death (0.84), whereas the performance was lower for revisions due to periprosthetic joint infection (0.68), dislocation (0.64), or periprosthetic fracture (0.65).

Conclusions:

Based on the small number of preoperative characteristics of the patient and modifiable surgical parameters, the developed risk prediction models can be easily used to assess the risk of revision or death. All developed models hold the potential to aid clinical decision-making, ultimately leading to improved clinical outcomes.

Level of Evidence:

Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.
Karakteristik Campuran Minyak dari Minyak Sawit Merah Murni dengan Minyak Kelapa atau Minyak Inti Sawit [Characteristics of Oil Mixtures from Virgin Red Palm Oil with Coconut Oil or Palm Kernel Oil]
Authors: Hasibuan Hasrul Abdi , Siregar Lerissa Aulia
Published: January 2021

The use of virgin red palm oil (VRPO) as a food product is very useful because it used as a source of fat and bioactive compounds (carotene, tocopherol, and tocotrienol). Increasing the use of VRPO can be conducted by blending it with lauric oils (coconut oil and palm kernel oil) containing medium-chain triacylglycerol (MCT) to produce a healthy oil. This research was conducted to examine the physicochemical properties of VRPO with coconut oil (CNO) or palm kernel oil (PKO) blends at a weight ratio of 100:0 - 0:100. The results showed that the mixtures of VRPO with CNO or PKO influenced the free fatty acid content, carotene content, fatty acids composition, iodine value, melting point, and solid fat content. Enhancing the amount of CNO or PKO onto VRPO causes the blends to have eutectic behavior (easy to melt). The VRPO: CNO and VRPO: PKO blends, at the ratio of 20:80 and 30:70, respectively, can be used as cooking oil. The VRPO: CNO blends at the ratio of 99:1 – 95:5 can be used for baking shortening while the VRPO: PKO blend at the ratio of 70:30 can be used for table margarine.

ABSTRAK

Penggunaan minyak sawit merah murni (virgin red palm oil, VRPO) sebagai produk pangan sangat bermanfaat karena VRPO sebagai sumber lemak dan senyawa bioaktif (karoten, tokoferol dan tokotrienol). Peningkatan pemanfaatan VRPO dapat dilakukan dengan memadukannya dengan minyak laurat (minyak kelapa dan minyak inti sawit) yang mengandung medium chain triacylglycerol (MCT) untuk menghasilkan campuran minyak sehat. Penelitian ini dilakukan untuk mengkaji sifat fisikokimia campuran minyak dari VRPO dengan minyak kelapa (coconut oil, CNO) atau minyak inti sawit (palm kernel oil, PKO) pada rasio berat 100:0 - 0:100. Hasil penelitian menunjukkan bahwa campuran minyak dari VRPO dengan CNO atau PKO mempengaruhi kadar asam lemak bebas, kadar karoten, komposisi asam lemak, bilangan iodin, titik leleh dan kandungan lemak padat. Peningkatan jumlah CNO atau PKO ke dalam VRPO menyebabkan campuran memiliki perilaku eutektik (mudah mencair). Campuran VRPO dengan CNO dan VRPO dengan PKO, masing-masing pada rasio 20:80 dan 30:70 dapat digunakan sebagai minyak goreng. Campuran VRPO dengan CNO pada rasio 99:1 - 95:5 dapat digunakan sebagai produk shortening untuk roti sementara campuran VRPO dengan PKO pada rasio 70:30 dapat digunakan untuk margarin meja.