bluuebunny/crossref_metadata_2025 huggingface dataset:
PREDICTION OF DYNAMIC PARAMETERS OF STRUCTURES BASED ON MODAL ANALYSIS USING FDD
Authors: Priyatmoko Ricky , Arfiadi Yoyong
Published: May 2022

Dynamic behavior and system identification are important topic in monitoring and maintaining existing infrastructures. System identification using Frequency Domain Decomposition (FDD) is an operational modal analysis (OMA) in frequency domain used on experiment of shear frame model with random vibration method is validated by comparing output of FDD data using acceleration input from simulated model with output of FDD using acceleration result of experimental model. The result of acceleration data is recorded using USB accelerometer X16-1D then calibrated and analyzed using Matlab programs, data_procces.m and solve FDD_eksperiment.m to estimate the modal parameter of model structure. Compared with parameter modal of simulation model, FDD method with input simulated acceleration resulted in difference of 1.757% in first frequency and 0.462% in second frequency. Meanwhile for FDD method using acceleration of experimental model, resulted in difference of 6.3126% in first frequency and 7.7327% in second frequency. FFD method is fairly accurate in predicting the frequency of structure, but for difference of mode shapes in experimental is very big compared to simulated model therefore it can be concluded that, this modal parameter is cannot be detected in experimental model.
CHARACTERISTIC OF CONTRACTION AND DISCHARGE COEFFICIENT FOR FLOW UNDER SLUICE GATE
Authors: Sunik Sunik
Published: May 2022

The contraction coefficient (Cc) and discharge coefficient (Cd) always rise in flow while sluice gate operated with variation of open gate and discharge (Q). This experimental research used prototype model made from fiberglass (horizontal channel), sluice gate installed on it. Two models of trapezoid baffle block installed as three rows, specified location 25 cm after sluice gate pair using sill with different dimension. Water depth (y) and velocity (v) were measured during each running test then Froude number, contraction coefficient (Cc) and discharge coefficient (Cd) were calculated. The result showed that trapezoid baffle block model T2 (used no sill, sill 2 cm and sill 2.7 cm, Fr = 0.11 - 0.75) gives the better performance modelling of Cc and Cd in term of the initial Froude number with R2 = 0.8086 (Cc) and R2 = 0.8273 (Cd).
PENGARUH TINGGI RIB TERHADAP DEFORMASI PADA KOMBINASI FONDASI SARANG LABA-LABA DAN TIANG BOR DENGAN PENDEKATAN ELEMEN HINGGA TIGA DIMENSI
Authors: Hamdhan Indra Noer , Sahib Yasmin Jihan Fahira
Published: May 2022

Spiders Nest Construction (SNC) is the foundation in the form of flat concrete plates which are reinforced with upright ribs and soil repair between ribs. The KSLL and bored pile are combined to obtain a foundation with high structural rigidity. This study reviews the magnitude of deformation that occurs in the foundation model with a variation of rib height KSLL 1 m, 1.5 m, and 2 m which are varied with 10 bored pile with diameter of 0.6 m in zig-zag configuration with the soil model Mohr-Coulomb and Hardening Soil. In the Mohr-Coulomb soil model the stress state limits are explained using friction angles (φ), cohesion (c) and dilatation angles (ψ). In the Hardening Soil model the soil stiffness is explained much more accurately by using three different stiffnesses namely E50 triaxial stiffness, Eur unloading / reloading stiffness and Eoed oedometer stiffness. In contrast to the Mohr-Coulomb model, the Hardening Soil model takes into account modulei dependence on rigidity. This means that all rigidity increases with pressure. Modeling on PLAXIS 3D shows that the most effective deformation occurs on a foundation with a rib thickness of 0.15 with 10 bored pile and a rib height of 1.5 m. The modeling results show the deformation value that occurs in the Hardening Soil soil model with a rib height of 1 m is 17.91 cm, reduced by 31.491% to 12.27 cm when the thickness of the rib is added to 1.5 m. Whereas in the Mohr-Coulomb soil model, the deformation that occurred on the foundation with a rib height of 1 m was 25.43 cm and reduced 48.997% to 12.97 cm when the rib height was added to 1.5 m.
PENGUJIAN KUAT TEKAN BETON DENGAN CAMPURAN AGREGAT LOKAL (BATU PECAH SELANGIT PASIR SIRING AGUNG)
Authors: Sani Santi
Published: May 2022

Beton dalam teknik sipil memegang peranan penting karena sering kali digunakan sebagai struktur dalam konstruksi beton. Struktur beton sangat dipengaruhi oleh komposisi dan kualitas bahan-bahan pencampur beton tersebut. Bahan pencampur beton adalah agregat kasar (split) agregat halus (pasir), semen dan air. Bahan tersebut harus dicampur sedemikian rupa sehingga dapat menghasilkan suatu kekuatan rata-rata yang diinginkan. Bahan material beton tersebut banyak juga terdapat di wilayah Kabupaten Musi Rawas sebagai sumber daya alam yang melimpah dan salah satunya adalah agregat kasar dari daerah Selangit Kecamatan Selangit dan pasir dari daerah Siring Agung Kecamatan Tugumulyo. Setelah melakukan pengujian agregat kasar (split) dan agregat halus (pasir) dan dinyatakan bahan tersebut dapat dipakai sebagai bahan pencampur beton untuk pembuatan struktur pada kontruksi bangunan. Pada perancangan beton ini dilakukan pendekatan yaitu dengan kuat tekan yang diinginkan yaitu sebesar 20 MPa maka campuran beton yang dipakai adalah 1 : 1,52 : 3,83 untuk 3 spesimen campuran dengan susunan campuran beton teoritis tiap m³ semen Portland 333,33 kg, Air 190 kg, Agregat halus 510,07 kg, Agregat kasar 1311,60 kg. Hasil didapatkan adalah pada umur 28 hari rata-rata kuat tekan beton sebesar 303,70 kg/cm² atau 25, 20 MPa melampaui kuat tekan yang telah ditetapkan. Penelitian yang dilakukan menghasilkan bahwa bahan agregat halus (pasir) Siring Agung dan agregat kasar Selangit dapat dipakai sebagai bahan campuran beton sebagai struktur kontruksi beton.
ANALISIS RISIKO PENGEMBANG PERUMAHAN DI DAERAH ISTIMEWA YOGYAKARTA SAAT PANDEMI COVID-19
Authors: Samudra Gregorius Dian , Ervianto Wulfram I.
Published: May 2022

Pada penghujung tahun 2019 dunia digemparkan adanya virus corona sehingga pada awal ta-hun 2020 WHO menetapkan COVID-19 sebagai pandemi. Virus corona tidak hanya menyerang sistem pernafasan manusia saja, namun juga berdampak pada sektor properti khususnya di Dae-rah Istimewa Yogyakarta.. Penelitian ini bertujuan untuk mengetahui bagaimana dampak adanya pandemi COVID-19 bagi pengembang perumahan, mengidentifikasi variabel risiko yang ada dan menganalisis faktor risiko yang memiliki frekuensi tertinggi dan dampak tertinggi bagi pengembang perumahan. Pengumpulan data dilakukan dengan menyebarkan kuesioner kepada responden dengan cara membagikan lembar kuesioner ke pengembang perumahan. Perbandingan rasio harga perumahan terhadap harga konsumen. Analisa frekuensi dan dampak dengan menggunakan standard deviasi dan nilai mean. Hasilnya adalah adanya gelembung kecil pada triwulan I tahun 2020 pada rasio harga rumah. Sedangkan variabel penurunan daya beli masyarakat memiliki frekuensi tinggi dengan nilai mean 3,50 dan dampak yang tinggi dengan nilai mean 3,67. Yang menunjukkan adanya penurunan daya beli masyarakat pada saat pandemi COVID-19 terjadi.
Fusion of ancient philosophy and art of medical science in the making of basics of medical ethics
Authors: Kozlova OV , Khristenko DN
Published: May 2022

In the modern world, a human being comes across the double absolute priority given to the values of medical ethics. On the one hand, moral ideals are metaphysical by nature. On the other hand, a human being treats ethical standards of medical ethics pragmatically. In this aspect, the key players of the ancient world who developed the metaphysical basics of medical ethics were especially important. The study is aimed at determining the contribution of ancient thinkers into development of fundamental basics of medical ethics. The works of ancient thinkers were taken as materials for the study. The study methods are represented by system analysis, dialectic method, phenomenological and hermeneutical approaches that enable to interpret the ideas of thinkers in relation to creating the basics of medical ethics. It has been established during the study that thinking based on the integration of rational, empirical and metaphysical principles has been developed in the ancient world. Metaphysical provisions of Plato and Aristotle manifested through the works of Galen make it is possible to conclude on eclectic philosophical views of Claudius Galen. Eclecticism is not just about plain borrowing of ideas, but about new fusion of physics, logics, and metaphysics in relation to understanding human health and disease. It can be stated that the first stage of nature cognition (natural philosophy) is the most important stage of developing sense-making basics of medical ethics. This period turns into a starting point for the emerging basics of fused humanitarian and natural science- based knowledge and formation of medical ethics principles.
Social stratification in W.L. Warner research
Authors: Baturenko S. A.
Published: May 2022

The relevance of the work is due to the transformations of the system of social stratification and opportunities for social mobility, as well as the need to search for relevant approaches for their study in Europe and the United States in the 30–40s of the XX century. The article is devoted to the analysis of studies of the class structure of the American sociologist and social anthropologist William Lloyd Warner. His vision of the social structure of American society is original and based on extensive empirical research. The article analyzes the methodological foundations and features of Warner’s empirical research. One of the tasks set by the author of the article is to consider the heuristic potential of one of the most well-known approaches to the study of social stratification in world sociology. W.L. Warner was instrumental in transforming the sociological explanation of the system of social stratification in the first half of the twentieth century. He described the main characteristics of the social structure of society in the 30–40s of the XX century, for the first time showing it in a new light, as consisting of six classes. Warner is credited with introducing the method of participatory observation into sociology in the study of the system of social stratification, as well as updating the categorical apparatus introduced by the sociologist from his own experience in anthropological research. Warner's research group developed the standard index of status characteristics, well-known in world sociology, which simplifies complex quantitative calculations, which is still used in empirical sociology. The author of the article made an attempt to trace the research logic of the American sociologist, as well as to show the relationship between various methodological components of the theory of social stratification and innovative methods of empirical sociology.
Empirical models of the structure of personal qualities of leaders: a radicalist type of social action (results of applied research)
Authors: Oseev A. A.
Published: May 2022

The article is devoted to the methodological and methodological foundations of the study of the personal qualities of managers and ordinary employees of organizations. In contrast to the author’s previous works devoted to the study of the personal qualities of leaders, including civil servants, in the works of Plato, Aristotle and M. Weber, where empirical models of the structure of the personal qualities of leaders of goal-rational, value-rational, affective and traditional types of social action were presented (according to M Weber), this publication presents the combined results of research conducted at different times in different organizations on empirical models of the structure of personal qualities of managers and ordinary workers of the “radicalist type of social action”, which expands the understanding of the conceptual approach about the four types of social action by M. Weber. And the empirical models themselves can be useful for solving applied problems in the field of organization management.

   The more the work of collecting empirical data continued, the more interesting the theoretical and practical question became. How common are people of the radicalist type of social action? In what types of social institutions, in what professions is the radicalist type represented most vividly? What in the structure of personal qualities distinguishes the radicalist behavior of representatives of peaceful professions (civil servants, doctors, teachers, etc.) from certain categories of professional military personnel? If radicalist behavior is a professionally important quality of workers, then how to measure the propensity of an individual to engage in radicalist behavior?

   The analysis showed that on this scale, conservatism–radicalism, the features are located at different, opposite “poles of the same coordinate axis”. Therefore, as in the study of traditional behavior, the following areas of sociological research of radicalist behavior are distinguished. Within the framework of the first direction, the main attention in the structure of personal qualities is paid to the traditional component, fidelity to “following the habit” (according to M. Weber); in the structure of this type of personality, conservative traits are dominant in comparison with those who are inclined to a radical, radical change and breakdown of established orders and traditions. Within the framework of the second direction, the main attention in the structure of personal qualities is paid to adherence to traditions, which is equally combined with a radicalist attitude, a willingness to innovate. Within the framework of the third direction, which is important for the tasks of our new study, in the structure of personality traits, radicalistic traits dominate over conservative ones; Distrust of authorities, a tendency to break habits, a willingness to innovate, and a radicalist attitude towards change are clearly manifested.
Health as a value and practice: society, family, personality. Review of the monograph by E.N. Novoselova
Authors: Karpova V. M.
Published: May 2022

The reviewed monograph is devoted to a comprehensive and versatile sociological study of the phenomenon of health, assessment of its state in the Russian population, analysis of factors that have a significant impact on it, the study of the value of health, its declarativeness, and representation primarily in normative ideas, but not in the minds of the population, description of the practices of a healthy lifestyle and their prevalence in modern Russian society.

The relevance of this study is due to both the general goals of the socio-demographic policy of the Russian Federation, aimed at saving the population by improving its health, and the current agenda for combating the COVID–19 pandemic and the need to assess its impact not only on the actual state of public health but also on health-saving people practices.

The monograph traces, analyses in detail, and comprehensively the revealed contradiction between the declarative high value of health and the intransitivity of the real practices of the population, which often do not correspond to the lines of self-preserving behavior. Based on a large array of empirical studies, the significant role of the family institution in shaping healthy lifestyle practices, educating future generations in line with a conscious attitude to one’s health is shown. At the same time, the high potential of the family in the transmission of behavioral patterns of unhealthy behavior is emphasized, which is noted by the author as the dual nature of the family influences adherence to healthy lifestyle practices.

Special attention is paid to the urgent problem of combating the COVID-19 pandemic: based on the latest most relevant research data, an analysis is made of changes in attitudes towards health and hygiene practices, and an assessment is made of the impact of the pandemic and the restrictive measures being introduced on the mental health of the population.
The main stages of urbanization and their comprehension in contemporary sociological theory
Authors: Vershinina I. A.
Published: May 2022

The article discusses the main stages of urbanization, which are distinguished on the basis of Soja’s concept of urban revolutions. The specificity of the spatial organization of each of the stages is analyzed. Particular attention is paid to the features of the current stage of urbanization, in which there are not only cities, but also more complex spatial formations, such as agglomerations. The article focuses on the postmetropolis as the main contemporary spatial form, according to Soja, which is replacing the traditional metropolis. This process is a result of the development of information and communication technologies. The transformation of the suburbs is also considered; the suburbs are turning from homogeneous residential areas into multifunctional “edge cities” and even “edgeless cities”, which are extremely difficult to map due to their dispersal over vast territories. Modern urbanization demonstrates a spatial morphology that reflects the changes caused by the formation of a postindustrial society, globalization and scientific and technological progress.
BEŞİNCİ SINIF İNGİLİZCE DERSİ ÖĞRETİM PROGRAMININ KAPSAYICI EĞİTİM İLKELERİ ETRAFINDA İNCELENMESİ
Authors: GÜLTEKİN TALAYHAN Özgül , SAKIZ Halis
Published: May 2022

Kapsayıcı eğitim, Türkiye dâhil dünya genelinde yaygınlık kazanan bir eğitim modeli haline gelmiştir. Kapsayıcı eğitim, öğrencilerin farklı ihtiyaçlarını, bireysel özelliklerini, yeterlilik ve eğitim düzeylerini ve kültürel yapılarını dikkate alarak, eğitim sisteminde ayrımcılığı azaltmayı, okul ve toplum süreçlerine katılımı artırmayı ve bu amaç doğrultusunda gerekli içerik, yaklaşım, yapı ve strateji değişikliklerinin yapılmasını öngören bir süreçtir. Öğrencilerin farklı ilgi ve ihtiyaçlarını karşılayan öğretim ortamlarının sağlanması için; öğretim uygulamalarının, öğrenme ortamlarının, kullanılacak içerik, yaklaşım ve stratejilerin nasıl olması gerektiğini açıklayan öğretim programlarının kapsayıcılığının sağlanması büyük önem taşımaktadır. Bu sebeple, bu çalışmanın amacı; 5. Sınıf İngilizce dersi öğretim programını kapsayıcı eğitim ilkeleri etrafında incelemek ve bir yarıyılı kapsaması planlanan, kapsayıcı eğitim değerlerine uygun bir öğretim programı önerisi hazırlamaktır. Çalışmadaki programda yer verilen özellikler, tüm devrelere ve tüm derslere uyarlanabilir niteliktedir.
MÜZİK EĞİTİMİ ALMIŞ OKUL ÖNCESİ ÖĞRETMENLİĞİ LİSANS ÖĞRENCİLERİNİN UZAKTAN EĞİTİME İLİŞKİN GÖRÜŞLERİ
Authors: AKINCI Mehmet Şahin
Published: May 2022

Times Eğitimin amaçlarından iki tanesi: Çağın gereksinimleriyle şekillenme ve ulaşılabilirliğini güçlendirmedir. Öğrencilerin kolay ulaşılabilir özelliklerde eğitim alabilmesi için ülkeler ve eğitim otoriteleri uzaktan eğitim (UE) faaliyetleri üzerinde çalışmışlardır. Gelişen teknolojik aygıtlar, internetin kolay ulaşılabilirliği ve yaygınlığı, öğrencilerin eğitim almada çeşitli nedenlerle yaşadıkları olumsuzluklar ve daha birçok nedenden dolayı UE’ nin tercih edilirliği yükselmiştir. 2020 Mart ayı ortasına kadar önceden planlanmış faaliyetlerle sürdürülmüş olan UE, Covid-19 hastalığı nedeniyle neredeyse dünyanın tüm eğitim kurumlarında mecburi olarak uygulanmaya başlamıştır. UE yöntemi ile müzik dersi almış olan eğitim fakültesi okul öncesi öğretmenliği lisans öğrencilerinin UE’ ye ilişkin görüşlerini tespit etmeyi amaçlayan bu araştırmaya, lisans seviyesinde 103 okul öncesi öğretmenliği bölümü öğrencisi katılmıştır. Betimsel tarama modelinde yürütülmüş olan çalışmada veriler araştırmacı tarafından hazırlanmış olan anket aracılığı ile elde edilmiştir. Katılımcıların UE’yi takip etmeleri ile kısıtlama süreçlerindeki eğitim tercihleri; müzik bilgilerinin üstüne yenilerini eklemeleri ile günlük çalışma süreleri arasındaki ilişki, araştırmada anlamlı farklılık gösteren bulgulardan bazılarıdır.
Classification of Odometers: A Short Elementary Proof
Authors: Hric Roman , Výbošťok Miroslav
Published: May 2022

The paper deals with odometers (i.e. adding machines) of general type. We give a characterization of self-conjugacies of odometers which enables us to present an elementary proof of a classification of odometers given by Buescu and Stewart in [2]. The paper might also serve as a very quick introduction to odometers.
Assessment of Slope Stability under Bounded Uncertainties Using Differential Evolution and Particle Swarm Optimization
Authors: Vu Vu Truong
Published: May 2022

In the assessment of slope stability, the uncertainty of soil properties affects directly the factor of safety, which is the objective function to be minimized. Therefore, we propose an approach that treats the uncertainties as additional variables besides three common variables, i.e. the radius of the critical slip surfaceRand its centre coordinatesX, Y. This approach is also compared with two other approaches:i)minimizing the objective function (with variablesR, XandY) at all vertices of the feasible region defined by lower and upper bounds of uncertainties, and then choosing the best solution from them;ii)using the two-level optimization in which the optimal solution (R, XandY) satisfies the least favourable condition of uncertainties at these vertices. The proposed approach with extra variables shows the efficiency in finding good solutions with a significant decrease of computation time. The study also shows that both Differential Evolution and Particle Swarm Optimization can find good solutions, although the former is marginally better.
A Soil-Pile Response under Coupled Static-Dynamic Loadings in Terms of Kinematic Interaction
Authors: Al-Jeznawi Duaa , Mohamed Jais I. B. , Albusoda Bushra S.
Published: May 2022

Although the axial aptitude and pile load transfer under static loading have been extensively documented, the dynamic axial reaction, on the other hand, requires further investigation. During a seismic event, the pile load applied may increase, while the soil load carrying capacity may decrease due to the shaking, resulting in additional settlement. The researchers concentrated their efforts on determining the cause of extensive damage to the piles after the seismic event. Such failures were linked to discontinuities in the subsoil due to abrupt differences in soil stiffness, and so actions were called kinematic impact of the earthquake on piles depending on the outcomes of laboratory tests and other numerical analyses. In this research, numerical modeling is used to explore the kinematic forces created in a single pile erected in two sand layers under two different conditions (dry and saturated states). Based on the obtained results from the physical model, the maximum bending moment was observed at a depth around 200 mm below the ground surface in the loose sand layer, then these values gradually reduced until it becomes negative in the dense sand layer. It has been demonstrated that this modeling may be used to predict how a pile foundation would respond to “kinematic” loading generated by ground movements during a seismic event. Consequently, the current findings could be used in the design and construction of bored aluminum or steel piles in Al-Karbala soil.
Ensemble Tree Machine Learning Models for Improvement of Eurocode 2 Creep Model Prediction
Authors: Daou Hikmat , Raphael Wassim
Published: May 2022

Ensemble tree machine learning models have proved useful for solving poorly understood and complex problems. This paper aims to calibrate the Eurocode 2 creep model by inserting a correction coefficient to the model. The correction coefficient is calculated using ensemble tree (bagging and boosting) models. The results showed that the insertion of the correction coefficient obtained by both the bagging and boosting models into the Eurocode 2 model led to significantly higher prediction accuracy. These approaches may lead to a better performance prediction, thereby reducing the effect of the time-dependent deformation on concrete structures.
The Impact of Covid-19 to Domestic Water Usage and Rainwater Harvesting at an Office Building in Jakarta
Authors: Kurniawan Vittorio , Sutandi Arianti , Untari Liucius Yenny , Tiffanyputri Anugerah , Saka Channy , Sutanto Maria Kevinia
Published: May 2022

COVID-19 transforms many social fabric and people adopt new lifestyle due to the pandemic. It compels people to regularly wash their hands which lead to increasing water demand. The research on an office building in Central Jakarta, Indonesia, during 2018 - 2020 indicates 31.23 % increase in water demand per capita per day. The pandemic also reduces the effectiveness of the building’s rainwater harvesting (RWH) system because people require more water while its RWH remains unchanged. Note that the last sentence cannot be applied universally or in absolute manner due to the variability of annual rainfall and the difference in buildings’ characteristics.
Lifestyle, sleep quality, and overall mental health of nursing students
Authors: Juchnowicz Dariusz , Tulej Zuzanna , Karakuła Kaja , Rog Joanna
Published: May 2022

Introduction:Lifestyle is often a decisive factor influencing both, somatic health and mental health. The aim of the study was to evaluate the quality of life, sleep quality and general mental health of nursing students.

Material and method:The study used the diagnostic survey method. The study was cross-sectional. A questionnaire was used, which was made available to the respondents via the Internet. The survey included the demographic questionnaire, the Fantastic Life Inventory, the Pittsburgh Sleep Quality Questionnaire (PSQI) and the General Health Questionnaire (GHQ-30). A total number of 165 nursing students (151 female and 14 male), aged from 19 to 53, participated in the study. All calculations were made using version 24 of the SPSS statistical package.

Results:The general mental health of students, as measured by the GHQ-30 scale, was quite good – the mean score on the GHQ30 scale – M = 9.21 (SD = 7.80). The average lifestyle quality index in the Fantastic Life Inventory Scale (M = 34.99; SD = 6.19) indicated a high quality of lifestyle.

As many as 81% (N = 134) of the respondents followed the principles of rational nutrition and consumed a balanced diet, 92% (N = 152) did not abuse alcohol, 86% (N = 142) did not smoke, 93% (N = 154) had never used other psychoactive substances. However, 57% (N = 94) of respondents did not undertake physical activity or undertook it on an insufficient level. Most of the subjects experienced sleep disturbances, the most common being difficulty falling asleep – 78.8% (N = 130), and waking up during the night or early in the morning – 70.3% (N = 116).

Conclusions:The quality of lifestyle and general mental health of the respondents was good. A significant influence of the quality of life on the occurrence of mental health disorders has been demonstrated.
Growth and formation of Scots pine stands in Eastern Polissia of Ukraine
Authors: Zhezhkun Anatoly M.
Published: May 2022

The purpose of the research is to study the current state, features of growth and formation of Scots pine (Pinus sylvestris L.) stands in Eastern Polissia of Ukraine.

The structure of pine stands by origin, age, the density of stocking, site indices, forest types and health condition was analysed. Features of the formation of stands were studied at the permanent sample plots. Visual assessment of health condition, as well as signs of pest and disease damage of trees, other defects and external signs that caused stem defects was carried out. The age structure of pine stands was not optimal: there was an excess of mature stands and a lack of young stands. The health condition of mixed pine stands was relatively better than that of pure pine stands. Mixed pine stands were characterised by high biological resistance and accumulated significant wood stock under regular sylvicultural maintenance. The dynamics of forestry and evaluation indicators of reference pine stands were evaluated and comparison of their growth with stocked pine stands was performed.
High temperature transformation of iron-bearing minerals in basalt: Mössbauer spectroscopy studies
Authors: Kądziołka-Gaweł Mariola , Wojtyniak Marcin , Klimontko Joanna
Published: May 2022

The high temperature decomposition of basalt from Lower Silesia (Poland) was followed by Mössbauer spectroscopy investigation. The Fe content of the sample was ~9.0 at.%. The X-ray diffraction analysis shows that augite (37%) and olivine (12%) are major Fe-bearing mineral components. The sample also contains significant amount of anorthite (22%) and nepheline (17%). The sample was heated at various temperatures between 200°C and 1100°C for three hours. Up to a temperature of 500°C changes in contribution of Fe-bearing minerals are insignificant. Heating in the temperature range from 500°C to 1100°C leads to a systematic increase in contribution of iron oxides at the cost of contribution of silicate minerals, like augite and olivine. Mössbauer spectrum obtained after heating at 1100°C showed hematite as the main iron oxide phase. The ratio of Fe3+/Fetot in the non-heated sample was equal to 0.51 and after heating at 1100°C this ratio amounted to 0.89.
CQ *-algebras of measurable operators
Authors: Triolo Salvatore
Published: May 2022

We study, from a quite general point of view, a CQ*-algebra (X, 𝖀0) possessing a sufficient family of bounded positive tracial sesquilinear forms. Non-commutative L
2-spaces are shown to constitute examples of a class of CQ*-algebras and any abstract CQ*-algebra (X, 𝖀0) possessing a sufficient family of bounded positive tracial sesquilinear forms can be represented as a direct sum of non-commutative L
2-spaces.
New design method for power transformer in contactless charging of storage batteries for undersea robot
Authors:   Institute of Marine Technologies, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia, Gerasimov V.А. , Komlev А.V. ,   Institute of Marine Technologies, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia, Filozhenko А.Yu. ,   Institute of Marine Technologies, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
Published: May 2022

Object and purpose of research. The research object is a special power transformer, which is a necessary functional element of the contactless battery charging system for autonomous undersea robots. There are separate primary and secondary parts of the transformer with a non-magnetic gap between windings and center-tocenter shift. It is to be taken into account during its design and requires a special purpose method, which is the focus of this study. The suggested method makes it possible to achieve the design parameters for the transformer using a ferrite cup-shaped magnetic conductor optimized for specific power, taking into account onboard undersea robot specifics. Materials and methods. The method suggests a system of relative units with a basic value of the outside core diameter. The method is based on the coefficient of magnetic coupling between windings and relative turn inductance completely defining the transformer electromagnetic properties as a function of relative gap and center-to-center shift between windings [1]. Calculations are done using mathematical modeling in Ansys Maxwell and Solidworks software packages. Design parameters of the transformer to provide maximum charge power are determined by maximum ampere turns related to admissible overheating of magnetic conductor with a full use of magnetic conductor aperture. Main results. The number of ampere turns and cross-section of windings are calculated, as well as the invertor frequency is determined at a given supply voltage and range of ferrite cup-shaped magnetic conductors. The calculated transformer parameters have to ensure the maximum wattage at admissible overheating of windings and given nonmagnetic gaps and center-to-center shifts. A case study and full-scale experiment has confirmed the choice of solutions and drawn conclusions. Conclusion. The use of the transformer designed by this method in the system raises the total efficiency of autonomous undersea robots.
Exact and approximate expressions for mutual inductance coefficients and electrodynamic forces of co-axial turns and planar (disk) coils with current
Authors:   Krylov State Research Centre, St. Petersburg, Russia, Tsitsikyan G.N. , Kunaev S.N. ,   Krylov State Research Centre, St. Petersburg, Russia
Published: May 2022

Object and purpose of research. The paper is concerned with the mutual inductance coefficients of co-axial circuits in a planar coil system. Known modifications for mutual inductance and electrodynamic forces in a system of co-axial circuits are written, and relations for their calculation are compared. Materials and methods. For this purpose the methods of mathematical physics and theoretic electric engineering are used. Main results. Alternative expressions are given for mutual inductance coefficients of co-axial coils and electrodynamic forces between the live coils. Curves of mutual inductance are plotted for planar coils with the distance between planes equal to 2 cm and the distance between coil turns Р equal to 1 сm and the distance between coil turns N equal to 0.5 сm, 0.4 сm & 0.3 сm. Conclusion. Relations have been derived for calculation of mutual inductance coefficients and electrodynamic forces at current passage in planar co-axial coils, which are very important for wireless transfer of power.
The quantitative content determination of main groups of biologically active substances in batches of Viburnum opulus fruits
Authors: Khvorost Olga P. , Leontiiev Bohdan S. , Fedchenkova Yuliia A. , Skrebtsova Kateryna S.
Published: May 2022

Aim. To determine the quantitative content of the main groups of biologically active substances (BAS) in batches of Viburnum opulus fruits using pharmacopeial methods for their subsequent use in the standardization of the plant raw material.Materials and methods. For the study, 6 batches of air-dried Viburnum opulus fruits crushed to a particle size of 1 – 2 mm and harvested in different regions of Ukraine in the mass fruiting phase in October-November 2020 were used. The quantitative determination of polyphenols and tannins was performed using the spectrophotometric method at a wavelength of 760 nm calculated with reference to pyrogallol and dried substance. The total amount of hydroxycinnamic acids was determined according to the method of the SPhU (State Pharmacopoeia of Ukraine) 2.0 described in the monograph “Kidney TeaN” calculated with reference to rosemary acid. The total amount of organic acids was determined by the titrimetric method according to the method of the monograph of the SPhU 2.1 “Rose hipsN” calculated with reference to malic acid.Results and discussion. The quantitative content of polyphenols (calculated with reference to pyrogallol and dried substance) in batches of Viburnum opulus fruits varied by about 1.4 times from 1.74 ± 0.01 % to 2.36 ± 0.01 %. According to the results obtained, the quantitative content of tannins (calculated with reference to pyrogallol and dried substance) in batches of Viburnum opulus fruits varied by 1.7 times from 0.73 ± 0.01 % to 1.23 ± 0.01 %. The quantitative content of the total amount of hydroxycinnamic acids calculated with reference to rosemary acid in batches of Viburnum opulus fruits ranged by 1.2 times from 3.96 ± 0.01 % to 4.73 ± 0.01 %. The quantitative content of the total amount of organic acids calculated with reference to malic acid in batches of Viburnum opulus fruits fluctuated more than 1.3 times from 6.80 ± 0.01 % to 9.08 ± 0.01 %.Conclusions. The quantitative content of the main groups of biologically active substances has been determined in 6 batches of Viburnum opulus fruits harvested in different regions of Ukraine using pharmacopoeial methods: polyphenols (varied by 1.4 times), tannins (varied by 1.7 times), the total amount of hydroxycinnamic (varied by 1.2 times), and the total amount of organic acids (varied by 1.3 times) calculated with reference to dried substance. The content of the groups of biologically active substances in batches of Viburnum opulus fruits slightly correlates with the place of the raw material harvesting. Thus, the selected methods of the SPhU 2.0 are quite suitable for determining the quantitative content of polyphenols, tannins and of the total amount of hydroxycinnamic and organic acids in batches of Viburnum opulus fruits; they can be used in further studies to standardize the raw material.
UN PARADIGMA EN UN LABERINTO: BORGES Y LA FILOSOFÍA OCCIDENTAL
Authors: Mualem Shlomy
Published: May 2022

Una de las características más notables en la obra de Jorge Luis Borges es su tratamiento constante y casi obsesivo de doctrinas y temas filosóficos. Por otro lado, él mismo admite que es "sencillamente un hombre de letras que refleja en sus escritos su propia confusión y el respetado sistema de confusiones que llamamos filosofía de literatura". ¿Cuál es la raíz de este interés borgesiano por la filosofía y cómo se entrelazan en su escritura la filosofía y la literatura, el mito y el logos? En el presente ensayo analizaré estas cuestiones a fin de iluminar las complejas interrelaciones entre la filosofía y la literatura en los textos del "filósofo literario", tal vez más destacado de nuestro tiempo. Al mismo tiempo, propongo una novedosa interpretación de la metáfora dominante del laberinto borgesiano, eintento demostrar que la convención común entre los comentaristas de Borges, que lo ven como un escéptico "llano" o un nihilista radical, es bastante inexacta; que su actitud entre la filosofía y el racionalismo es más ambivalente que negativa y que su búsqueda de la verdad está más cerca de la búsqueda permanente de Sócrates que del hihilismo de los sofistas.
SOBRE DECADENCIA, FINALES DEL MUNDO, FINALES DE LA HISTORIA A PROPÓSITO DE LA IDEA DE NUEVA EDAD MEDIA DE UMBERTO ECO
Authors: Turiso Sebastián Jesús
Published: May 2022

Este artículo tiene como objetivo hacer una crítica desde la filosofía de la historia de la falsa historia comparativa partiendo del estudio de la historia de las ideas y desde la mentalidad. En la elaboración del artículo se ha recurrido a tomar en cuenta las diferentes reflexiones que se han hecho acerca de la decadencia o la llegada de una nueva Edad Media en nuestro presente. Para ello, tomaremos como punto de partida la reflexión de Umberto Eco acerca de la Edad Media y sus paralelismos con nuestro presente. Finalmente, si queremos ser rigurosos, veremos que no es posible considerar la existencia de un eterno retorno dentro de la historia.
EMERGENCIA DEL SUJETO EN JUDITH BUTLER: ENTRE FOUCAULT Y FREUD
Authors: Martínez Ariel
Published: May 2022

El presente trabajo se propone analizar algunas claves sobre la teoría del sujeto que Judith Butler construye a partir de refeencias provenientes tanto del psicoanálisis como del pensamiento foucaultiano. Por ello se traza un recorrido sobre algunas categorías que constituyen la plataforma analítica que sustenta el pensamiento de la autora. Finalmente se exponen algunas críticas y propuestas al respecto.
ANÁLISIS NO-HERMENÉUTICO DEL SER DE LOS VALORES
Authors: Banda Marroquín Obdulio Italo
Published: May 2022

No existen los valores ni fuera de la mente humana, ni como creados por ella. Lo que se denomina "valores", es el reaccionar emotivo de la conciencia valorante ante aquellos estímulos que impactan en su afectividad. La mente humana se vale de categorías axiológicas creadas para expresar el impacto que, según sean las circunstancias, le producen aquellas situaciones o entidades.
La familia en la Teoría Crítica: Dominación y utopía
Authors: Sembler Camilo
Published: May 2022

La familia representa un problema clave en la filosofía política moderna. En este artículo se examinan las principales claves filosóficas a partir de las cuales la Teoría Crítica buscó descifrar el significado de la familia en la sociedad capitalista. Siguiendo la herencia de Hegel y Marx, el estudio de la familia es abordado por esta tradición desde laperspectiva de una crítica dialéctica de la ideología. Esto supone evidenciar su significado para la reproducción de la dominación, así como las posibilidades utópicas latentes en la vida familiar.
La verdad sin comillas
Authors: Rastier François
Published: May 2022

Traducción de Enrique Ballón Aguirre
Las Alarmantes Implicaciones del Proyecto 1619
Authors: Meier Thomas
Published: May 2022

Analizo las propuestas del Proyecto 1619, conectado con la Critical Race Theory (CRT). Demuestro que sus postulados son pseudocientíficos, más parecidos al esoterismo que a cualquier metodología racional o científica. Motivaré un punto de vista objetivo, que no quiere ver el mundo a través de lentes ideológicos. Argumento que la propuesta del Proyecto 1619 es falaz, ya que viéndolo con métodos de filosofía de la ciencia, demostraré que no es posible falsificarla.
Prognostic factors following resection of intracranial metastases
Authors: Henderson Duncan , Zafar Arif , Bjornson Anna , Razak Adam , Achawal Shailendra , Danciut Mihai , Smith Aubrey , O’Reilly Gerry , Rajaraman Chittoor , Bahl Anuj
Published: May 2022

Background:

The aim of this study was to identify prognostic factors associated with resection of intracranial metastases.

Methods:

A retrospective case series including patients who underwent resection of cranial metastases from March 2014 to April 2021 at a single center. This identified 112 patients who underwent 124 resections. The median age was 65 years old (24–84) and the most frequent primary cancers were nonsmall cell lung cancer (56%), breast adenocarcinoma (13%), melanoma (6%), and colorectal adenocarcinoma (6%). Postoperative MRI with contrast was performed within 48 hours in 56% of patients and radiation treatment was administered in 41%. GraphPad Prism 9.2.0 was used for the survival analysis.

Results:

At the time of data collection, 23% were still alive with a median follow-up of 1070 days (68–2484). The 30- and 90-day, and 1- and 5-year overall survival rates were 93%, 83%, 35%, and 17%, respectively. The most common causes of death within 90 days were as follows: unknown (32%), systemic or intracranial disease progression (26%), and pneumonia (21%). Age and extent of neurosurgical resection were associated with overall survival (P < 0.05). Patients aged >70 had a median survival of 5.4 months compared with 9.7, 11.4, and 11.4 for patients <50, 50–59, and 60–69, respectively. Gross-total resection achieved an overall survival of 11.8 months whereas sub-total, debulking, and unclear extent of resection led to a median survival of 5.7, 7.0, and 9.0 months, respectively.

Conclusion:

Age and extent of resection are potential predictors of long-term survival.
Relationship Between Tax Accrual/ Correction Rate and Economic Growth
Authors: GÜMÜŞ ÖZUYAR Sevilay Ece , YILMAZ Mustafa , AKCAN Ahmet Tayfur
Published: May 2022

Tax revenues are one of the main factors necessary for the continuation of the economic activities of the countries. Tax revenues are of vital importance for countries. Collection of all accrued taxes increases public revenues. However, not all accrued taxes can be collected. In the study, the relationship between the accrual/collection rate of taxes and economic growth was investigated using annual data for the period 1970-2020. ARDL Boundary Test is used to investigate the relationship between the variables. According to the results of the study, there is a significant long-term relationship between tax collection rates and economic growth. In addition, according to the results of the long-term coefficient equation, a positive and significant result was determined between the accrual/collection rate of taxes and economic growth.
Laudatio for Benoît Pugin, the First Solvias Leading Scientist
Authors: L'Eplattenier François
Published: May 2022

On June 25, 2001, Prof. Dr. François L'Eplattenier presented the first 'Solvias Leading Scientist' award to Dr. Benoît Pugin, Solvias AG.
Monitoring of the Drying Process by Direct Solid-Phase Microextraction
Authors: Besse Jacques , Fornage Antoine , Luisier Jean-Luc , N'Zébo Hervé
Published: May 2022

SPME is known as a rapid and convenient method for analyzing air-borne organic compounds in closed systems ('headspace SPME'). In this investigation we have applied this technique to the monitoring of the drying process of chemicals containing small amounts of organic solvents under
specific conditions. Interesting results were found and some of them are presented and discussed in this paper.
A circular process for phosphoric acid plant wastewater facilitated by selective electrodialysis
Authors: Monat Lior , Zhang Wei , Jarošíková Alice , Haung Hao , Bernstein Roy , Nir Oded
Published: May 2022

Phosphoric acid production generates large volumes of industrial wastewater that cannot be treated efficiently by existing processes because of its low pH and high precipitation potential. At present, the wastewater is generally stored in evaporation ponds that are prone to breaches, leakage, and flooding. We developed an alternative three-step process for the treatment of phosphoric acid wastewater including selective electrodialysis, reverse osmosis, and neutralization. Testing the process with synthetic wastewater yielded promising results. An exceptional Na/Ca selectivity (up to 18.3 was observed in low-pH electrodialysis, enabling the separation of concentrated H2SO4 without gypsum scaling. Sulfate removal from the electrodialysis diluate prevented scaling in the subsequent high-recovery (>90%) reverse osmosis step, generating high-quality water. A final reaction between the reverse osmosis concentrate and natural phosphate rock enabled P recovery and neutralization of remaining acidity. The electric-power requirement of the process was estimated to be 4.4 kWh per m3 of wastewater, from which 0.78 m3 of clean water, ~3 kg H2SO4, and ~2.5 kg P were recovered. Overall, lab-scale results indicate that this process would be a sustainable and techno-economically viable solution for the treatment of hazardous wastewater byproducts of the phosphoric acid industry
Alternating one-phase and two-phase crystallization mechanisms in octahedral patchy colloids
Authors: Garaizar Adiran , Higginbotham Tim , Sanchez-Burgos Ignacio , tejedor andres , Sanz Eduardo , ESPINOSA JORGE R.
Published: May 2022

Colloidal systems possess unique features to investigate the governing principles behind liquid-to-solid transitions. The phase diagram and crystallization landscape of colloidal particles can be finely tuned by the range, number and angular distribution of attractive interactions between the constituent particles. In this work, we present a computational study of colloidal patchy particles with high-symmetry bonding—six patches displaying octahedral symmetry—that can crystallize into distinct competing ordered phases: a cubic simple (CS) lattice, a body-centered cubic (BCC) phase, and two face-centered cubic (FCC) solids (orientationally ordered and disordered). We investigate the underlying mechanisms by which these competing crystals emerge from a disordered fluid at different pressures. Strikingly, we identify instances where the structure of the crystalline embryo corresponds to the stable solid, while in others it corresponds to a metastable crystal whose nucleation is enabled by its lower interfacial free energy with the liquid. Moreover, we find the exceptional phenomenon that, due to a subtle balance between volumetric enthalpy and interfacial free energy, the CS phase nucleates via crystalline cubic nuclei rather than through spherical clusters as the majority of crystal solids in nature. Finally, by examining growth beyond the nucleation stage, we uncover a series of alternating one-phase and two-phase crystallization mechanisms, depending on whether or not the same phase that nucleates keeps growing. Taken together, we show that an octahedral distribution of attractive sites in colloidal particles results in an extremely rich crystallization landscape where subtle differences in pressure crucially determine the crystallizing polymorph.