bluuebunny/crossref_metadata_2025 huggingface dataset:
Protection of art gallery and museum collections from vibration
Authors: Trevor-jones David , McNulty Martin
Published: February 2023

Awareness that works in museum collections might be at risk of damage from exposure to vibration has existed in the art world at least since the 1970s. The acute risk is greatest when works are being moved. Early attempts at measurement and risk evaluation were focussed on works in
transit. The assumption was that works at rest, exhibited or stored in gallery conditions, were no more vulnerable to vibration than the buildings housing them. That may hold true for conventional paintings, whatever their medium, age or even condition. Artefacts may be at greater risk. As
practicable methods for monitoring emerged, especially during nearby construction, attention turned to the vulnerability of art objects more widely. Few verifiable cases of damage caused by exposure to vibration have been reported but the perception of risk has nonetheless increased. A necessarily
precautionary approach has become ever more cautious, especially encouraged by the hypothesis that all objects are susceptible to accumulated exposure and eventual fatigue failure. Yet there is no numerical or experiential evidence to support that. A summary of a comprehensive literature review
leads here to an attempt at numerical analysis of the risk, taking Michaelangelo's 'David' as a case study.
Predicting the behavior of commercially available building foundation isolation materials using a four-parameter fractional Zener model
Authors: Bradley Colin , Golden Matthew , Musafere Faiz , Havin Josh
Published: February 2023

In this paper we apply a four-parameter fractional Zener model to describe the short and long term creep behavior of a viscoelastic building foundation isolating material currently in use globally in noise and vibration mitigation applications. Building from the classical rheological
models composed of springs and dashpots suitably combined (Maxwell, Kelvin-Voight, Zener), we include a fractional derivative component in the form of a Scott-Blair element composed of a Riemann-Liouville derivative of non-integer order. The parameters are identified empirically through measured
stress-strain results and hysteresis curves for the material in compression. The model is then compared to the results of a 168h constant load creep test of three commercially available materials.
Accurate reconstruction of point and transfer mobilities using the round-trip method
Authors: McGee Ramin , Meggitt Joshua , Smith John , Elliott Andrew
Published: February 2023

The round trip method enables the indirect determination of point and transfer mobilities along interfaces that cannot be easily excited. One embodiment of the method requires excitation at a subset of points either side of the interface, while responses are measured along it. This
is typically done by instrumented hammer or shaker. Alternatively, the excitation required can be generated by equipment operational in use, using the concept of the generalised transmissibility. In the present paper, we investigate the sensitivity of the round-trip method with respect to
the number of remote measurement positions used, their locations, and signal-to-noise-ratio. Numerical and experimental examples are provided which demonstrate that there exists an optimum number of excitation and response positions for the accurate reproduction of point and transfer FRFs.
A mass-spring analogy for modeling the acoustic behaviour of a metamaterial
Authors: Lopez Maël , Dupont Thomas , Panneton Raymond
Published: February 2023

Absorbing sound almost completely at specific frequencies with conventional acoustic materials whose thickness is at least 60 times smaller than the wavelength is a challenge, particularly at low frequencies. Fort this purpose, acoustic metamaterials are of a great interest. Here, the
metamaterial is called multi-pancake cavities. It is composed of a main pore with a repetition of thin annular cavities (pancake cavities). Previous research has shown that this repetition increases the effective compressibility of the main pore. This increase makes it possible to decrease
the effective sound speed in the material and, consequently, the main pore resonance frequencies. At these resonances, the metamaterial presents absorption peaks, the first one can have a wavelength to material thickness ratio of more than 60 (subwavelength material). To complete the analysis
and prediction of absorption peaks (especially secondary peaks) of these metamaterials, it is proposed to adapt a conventional mass-spring model to this metamaterial. Due to the small cavity length-to-diameter ratios, radial propagation is considered inside the annular cavities. This model
shows a good agreement with the results obtained by finite element method and by impedance tube measurements. Finally, comparisons with previous theoretical approaches are presented and discussed.
Synchronization in multi-sensor measurements: importance and methods
Authors: Dare Tyler
Published: February 2023

Measurement methods with multiple sensors are powerful tools in assessing and diagnosing noise. As sensor counts increase, the number of sensors can exceed the number of available channels in a single data acquisition system. In these cases, multiple data acquisition systems can be
used, but synchronizing the sampling of each system is critical for an accurate measurement. In this tutorial, different methods of synchronization are discussed, along with the benefits and drawbacks of each. Additionally, methods of post-processing data to synchronize measurements are presented
for use in cases where hardware-based synchronization is not feasible.
The use of a parametric array source and nearfield scanning in the characterisation of panel materials for underwater acoustics
Authors: Wang Lian , Wang Lian , Humphrey Victor
Published: February 2023

The properties of the materials used in underwater acoustics are important for applications such as acoustic windows, reflectors and baffles, acoustic barriers or screens, decoupling materials, and anechoic coatings. To characterise the performance of such materials at frequencies above
1 kHz, measurements are typically undertaken on samples of the material in the form of finite sized panels. Such measurements suffer from uncertainty due to the finite size of the panel (leading to contaminating signals from edge diffraction), and the difficulty in simulating the ideal plane-wave
insonification. This paper describes work at the UK National Physical Laboratory to minimise these effects by use of: (i) a parametric array as a sound source that provides a directional beam and short broadband pulses; and (ii) nearfield scanning using a hydrophone to sample the complex sound
pressure field interacting with the test sample, decomposing the sound field into its plane-wave components. Results are presented of these techniques applied to measurements in laboratory test tanks at frequencies between a few kilohertz and a few hundred kilohertz to determine the reflection
and transmission performance of a range of test samples, including panels consisting of homogeneous polymers and materials with regular periodic structure.
Acoustical Effects of Surgical and N95 Masks on Speech Perception in Open-Plan Offices
Authors: Ganatra Pooja
Published: February 2023

Wearing face masks provides some protection against infection from COVID-19. Face masks can also change how people communicate and subsequently affect speech signal quality. This study investigated how two common face mask types affect acoustic analysis of speech perception. Quantitative
and qualitative assessments were carried out in terms of measuring the sound pressure levels and playing back to a group of people, respectively. The responses gauged proved that masks alter the speech signal with downstream effects on speech intelligibility of a speaker. Masks muffle speech
sounds at higher frequencies and hence the acoustic effect of a speaker wearing a face mask is equivalent to the listener having a slight high frequency hearing loss. When asked on the perception of audibility, 83% of the participants were able to clearly hear the no mask audio clip, however,
41% of the participants thought it was moderately audible with the N95 and face shield masks. Due to no visual access, face masks act as communication barriers with 50% of the people finding to understand a person because they could not read their lips. Nevertheless, based on these findings
it's reasonable to hypothesize that wearing a mask would attenuate speech spectra at similar frequency bands.
Adaptive Array Reduction in Acoustic Beamforming (Virtual Presentation)
Authors: Liu Yu
Published: February 2023

Acoustic beamforming is a widely used source localisation technique where an array of microphones is placed in the acoustic far-field to gather unique contributions of acoustic pressure waves. The spatial and temporal relationship of these pressure contributions are sensitive to the
microphone array design. To date, most acoustic beamformers are constructed using a spiral-based array configuration, yet in recent years, a new technique for developing array patterns has emerged that unlocks flexibility and convenient customisation, yielding improved acoustic source imaging
to its predecessors. These arrays are developed using an iterative microphone removal process, known as an array reduction method. A cost-function is developed that combines the penalty of spatial aliasing images, known as sidelobes, and the resolution of the acoustic source, known as the
main lobe. Microphones are iteratively removed from a larger initial array to arrive at an array with a desired number of microphones, frequency range and spatial constraints. The use of array reduction method arrays has expanded into array designs for o set source locations, irregular areas,
and the most recent advancement, array pairing. This paper provides a brief summary of the development of the array reduction techniques and some example results of its application.
PENGARUH JENIS PEREKAT DAN UKURAN PARTIKEL SERAT POHON PISANG (Musa acuminate) PADA PEMBUATAN FIBER BOARD UNTUK APLIKASI PLAFON (Variabel jenis perekat)
Authors: Maxi Millian  , Bambang Kusmartono
Published: February 2023

Fiber board merupakan sebuah panel homogen yang dibuat dari serat lingo sellulosa, yang dikombinasi dengan resin sintetik atau bahan perekat lainnya, yang direkatkan secara bersamaan dalam keadaan panas dan bertekanan. Bahan additive dapat ditambahkan selama proses pembuatan untuk merubah atau memperbaiki sifat yang dihasilkan. Fiber board ini biasanya dimanfaatkan sebagai panel, isolasi, dan cover pada kontruksi bangunan dimana dibutuhkan kekuatan pada setiap lembarannya. Selain itu juga dapat digunakan sebagai komponen pada pintu, cabinet, almari, dan peredam suara.

Penelitian ini dilakukan untuk memperoleh Fiber board dari pelepah pisang dengan variabel jenis perekat. Pelepah pisang di jemur sampai kering kemudian di giling. Untuk proses pembuatan fiber board  yaitu siapkan serat, urea formaldehyde, dan jenis perekat (PVAC, styrofoam, gondorukem, Polistirena resin, dan Poly Ethylene Theraphalate) dengan masing-masing berat 250 gr kemudian di aduk menjadi satu setelah itu di masukan kedalam cetakan yang berukuran 10x20x15cm yang diberi alas besi yang telah dilapisi alumunium foil, lalu ditekan dan cetakan diangkat ke atas degan cara pelan-pelan setelah itu di atasnya di kasih besi juga,kemudian di masukkan kedalan alat kempa panas, di tinggu sampai 10 menit.
PENGAMBILAN MINYAK ATSIRI DARI RIMPANG TEMULAWAK DENGAN PROSES EKSTRAKSI MENGGUNAKAN PELARUT N-HEKSAN (Variabel Volume Pelarut dan Waktu Ekstraksi)
Authors: Dwiki Novendratama  , Ganjar Andaka
Published: February 2023

Temulawak (Curcuma xantorrhiza Roxb.) merupakan salah satu jenis tanaman obat penting yang banyak digunakan sebagai bahan baku industri obat di Indonesia. Rimpang temulawak mengandung zat kurkumin, minyak atsiri, pati, protein, lemak, selulosa dan minyak. Di antara komponen tersebut yang paling banyak kegunaannya adalah pati, minyak atsiri dan kurkuminoid.

Penelitian ini bertujuan mengetahui pengaruh jumlah volume pelarut dan waktu ekstraksi dalam pengambilan minyak temulawak dengan metode ekstraksi menggunakan pelarut n-heksan. Temulawak dengan ukuran yang sudah terbentuk serbuk disiapkan. Kemudian serbuk temulawak ditimbang sebanyak 100 g untuk dilakukan proses ekstraksi menggunakan pelarut n-heksan dengan jumlah volume pelarut yang digunakan sebagai variabel sebanyak 300 - 500 mL dengan suhu yang digunakan 60-62oC dan kecepatan pengadukan yang digunakan 300 rpm selama 120 menit. Sedangkan untuk variabel waktu ekstraksi digunakan waktu selama 60-180 menit, dengan jumlah volume pelarut n-heksan sebanyak 500 mL. Setelah sampel selesai di ekstraksi, selanjutnya hasil ekstraksi difiltrasi. Hasil dari filtrasi kemudian dilakukan proses distilasi hingga didapatkan minyak yang tertinggal di labu distilasi (residu) dan sudah tidak ada yang menetes lagi di penampung hasil distilasi (distilat). Sampel dituang ke dalam botol penampung yang sudah diketahui beratnya. Sehingga dapat diketahui berat sampel yang terambil untuk mencari persentase minyak terambil.

Dari hasil penelitian dengan jumlah bahan 100 g didapatkan bahwa semakin banyak jumlah volume pelarut yang digunakan maka persentase randemen semakin banyak dan semakin lama waktu ekstraksi maka persentase randemen semakin banyak juga. Pada variabel jumlah volume pelarut didapatkan jumlah volume pelarut yang optimal pada 500 mL n-heksan dengan persentase randemen sebesar 13,3%. Sedangkan untuk variabel waktu ekstraksi didapatkan kondisi optimal pada lama waktu ekstraksi 150 menit dengan persen minyak terambil sebesar 14%.
Kompetensi Manajerial Kepala Sekolah Dalam Meningkatkan Kinerja Guru Pada SD Negeri 50 Kota Ternate
Authors: Adnan Fadillah , Hasan Said , Marwan Marwan
Published: February 2023

This study aims to 1). find out the ability of school principals to develop programs to improve teacher performance; 2) knowing the ability of the Principal in Carrying Out Activities to Improve Teacher Performance; and 3) knowing the ability of the Principal in Conducting Evaluations to Improve Teacher Performance. This study uses a descriptive method, namely a qualitative approach by uncovering certain social situations that describe reality correctly, formed by words based on relevant data collection and analysis techniques. The results of the study show that the principal has the ability to develop programs, carry out activities and carry out evaluations to improve teacher performance at SD Negeri 50 Kota Ternate.
The The influence of the competence and training of state civil servants on work performance in the West Java provincial education office
Authors: Mulyeni Sri
Published: February 2023

This study aims to test empirically competence and training on work performance in institution. This analysis uses independent variables, competency and performance. The dependent variabel is worK performance. The sample of this research are employees who work at the Education Office of West Java Province as many as 86. The sample was taken by purposive sampling metode. Data analysis using multiple linear regression analysis, by testing the hypothesis test statistic t. the results of this study indicate that competence significantly positively influences performance which ultimately leads to work performance. Based on hypothesis testing using the t test partially, it is obtained that H1 is rejected and H2 is accepted, which means that there is a positive and significant influence with a sig value of 0.000 < 0.005 between competency varables on training. The coefficient of determination (R2) is 0.487, meaning that the contribution of competence and training variabels to work performance variable is 0.487 or 48,7%, while the remaining 51,33% is influenced by other variables which are ignored or not examined in this study.
Peran Perbankan Syariah Dalam Meningkatkan Usaha Bagi Pengusaha Mikro di Kota Surakarta
Authors: Agustina Frichillia Elvira
Published: February 2023

Salah satu peran bank syariah dalam mengembangkan perekonomian suatu negara termasuk Indonesia sangatlah besar, hampir semua sektor yang berkaitan dengan kegiatan keuangan akan membutuhkan berbagai jasa perbankan. Oleh karena itu, kita sangat membutuhkan dunia perbankan saat ini dan di masa yang akan datang, baik perusahaan maupun perorangan. Terkait dengan fungsi perbankan yaitu sebagai lembaga keuangan yang menghimpun dan menyalurkan dana masyarakat serta memperlancar transaksi perdagangan. Usaha Kecil dan Menengah (UMKM) yang merupakan salah satu kekuatan yang dapat mendorong pertumbuhan ekonomi. UMKM saat ini berkembang sangat pesat sehingga perbankan syariah memiliki peluang untuk menumbuhkan perekonomian suatu daerah. Keberadaan Bank BSI (Btpn Syariah) KCP Surakarta memberikan hasil dan dampak bagi usaha mikro dan menengah. Hal ini terlihat dari membaiknya bisnis nasabah pasca pembiayaan di Bank BSI (BTPN Syariah) KCP Surakarta. Selain itu, nasabah juga mengalami peningkatan pendapatan, peningkatan volume penjualan, dan penambahan karyawan baru dalam usahanya setelah pembiayaan Bank BSI (BTPN Syariah) KCP Surakarta. Teknik analisis data diawali dengan menelaah semua data yang tersedia dari berbagai sumber yaitu dari wawancara, observasi yang telah dituliskan dalam catatan lapangan, dokumen pribadi
Machine learning y lógicas semióticas: el caso de la publicidad digital
Authors: Zelcer Mariano
Published: February 2023

Este artículo propone una aproximación a los procesos de aprendizaje automático por computadora desde una perspectiva semiótica peirciana. Para ello, trabaja en un territorio privilegiado para la observación de la articulación de la datificación de los usuarios con su posterior gestión mediante sistemas informáticos de aprendizaje por computadora: la publicidad digital. A partir de un caso real, se da cuenta de los modos en los que el machine learning articula lógicas abductivas e inductivas, poniendo foco en los modos en que los sistemas informáticos generan hipótesis a partir de la identificación de semejanzas y las ponen a prueba en investigaciones experimentales, cuyos resultados funcionan como input que realimenta el aprendizaje.
La decisión está: la seguridad vuelve
Authors: Manrique Rodrigo , Muñoz Marco
Published: February 2023

Postulada en la campaña presidencial del 2015, la promesa de “derrotar al narcotráfico” constituyó uno de los ejes del gobierno de Mauricio Macri, posicionándose como una problemática central en la agenda securitaria de Cambiemos. La implementación, en abril de 2016, del Programa Barrios Seguros en el Barrio Padre Carlos Mugica significó un primer paso en ese sentido. Dicha política implicó la intervención de las fuerzas de seguridad federales, bajo la coordinación del Ministerio de Seguridad de la Nación, en uno de los territorios considerados de “alta peligrosidad” por el discurso oficial.El presente trabajo propone analizar el discurso político-mediático respecto a la implementación de dicho programa en el Barrio Mugica. Particularmente, busca examinar el modo en que el diario La Nación y el gobierno de Cambiemos representan el rol de las fuerzas de seguridad en el marco de la lucha contra el narcotráfico en este territorio. Para ello, parte del estudio de las noticias y comunicados oficiales publicados en el período 2016-2017 por parte del mencionado medio, en su versión online, así como por el Ministerio de Seguridad de la Nación, en sus diversas plataformas digitales.
INDUSTRIALIZATION, PRODUCTION, AND PROCESSING OF CASSAVA (Manihot Esculenta Crantz) FOR THE EXTRACTION OF FLOUR AND POTENTIAL COMMERCIAL USAGE
Authors: Rosario Máximo Mejía
Published: February 2023

Cassava flour can be made into high-quality flour as a partial substitute for wheat flour and other cereals. Also, cassava can be presented in food formulations such as bread, pasta, cookies, cake mixes, pizza dough, arepas, empanadas, pancakes, etc. The flour of cassava provides convenience in the baking area before a society concerned about good health and nutrition, with the obtaining of bread with high fiber content. This would add to the production of bread and other products. In addition to a decrease in the raw material, a component in terms of nutrition and health are not found in many current bakery foods and that society demands today. The content of crude fiber in cassava flour is greater than in wheat flour, this characteristic makes the products made with said flour acquire greater nutritional value since it presents fiber contents similar to those of wholemeal flours. Cassava flour is gluten-free and low in fat, low in calories, and sugar, making it a good alternative for people with celiac disease, diabetes, hypertension, or cholesterol tall. It can also be consumed by people with sensitive digestive disorders due to its easy digestion. Cassava for flour production has a high potential worldwide and could reduce wheat imports for bakeries.
WITH THESE I KNOW IT WILL OR IT WILL NOT RAIN: INDIGENOUS INDICATORS OF RAINFALL IN MWANGA DISTRICT, TANZANIA
Authors: Lusiru Sifuni Nikombolwe
Published: February 2023

Weather forecasting is crucial to planning activities which should be undertaken in, and by, various earth systems. Forecasting the characteristics of rainfall, including the start and end of the rainy season, as well as the amount of rainfall to be received in the coming season, is very important in planning for rainfall-related activities and adapting to rainfall-related hazards. Through quantitative and qualitative techniques, this study sought to identify the indigenous indicators used in forecasting rainfall in Mwanga District, Tanzania. Being a semi-arid area and mostly relying on rain-fed agriculture, rainfall forecasting is crucial in planning agricultural activities and adapting to rainfall-related hazards. The identified indicators of the start of rainfall included the sun burning very intensely, the direction of wind, the appearance of clouds in the sky during the dry season, the budding and flowering of some trees, and the behavior of certain animals and birds. Regarding the end of the rainy season, the farmers observed the flowering of some vegetation, the appearance of mushrooms in the land, cold weather, and wind. Besides, the farmers observed wind, the intensity of the sun, high temperatures, as well as the appearance of some butterflies and ants to forecast the amount of rainfall that will be received in the coming season. Although traditional rainfall forecasting is very important, its accuracy has been decreasing due to increasing climate change and variability. Therefore, it is better to use a combination of indicators than relying on one or a few indicators to increase the accuracy of predictions. Further, indigenous knowledge of weather forecasting should be documented to increase the number of people who can use it effectively. It should also be integrated with modern technologies to improve its accuracy
HYDRO-GEOCHEMICAL AND QUALITY ASSESSMENT OF GROUNDWATER FROM SEDIMENTARY FORMATION IN THE MIDDLE BENUE TROUGH, NIGERIA
Authors: W. W Akaamaa , S.B Onoja , T.U. Nwakonobi , M.O. Udochukwu
Published: February 2023

Nasarawa State in Nigeria, is host to several mineral deposits. The groundwater resources in the State plays an important role in the socio-economic life of the people in terms of domestic, industrial and agricultural water supply. The effect of climate change, on the surface and groundwater resources, couple with the anthropogenic and geogenic activities on the quality of the various groundwater sources remained uncertain. Two hundred (200) water samples were collected randomly from boreholes and hand-dug wells from five locations (20 each) in Nasarawa South: Keana, Obi, Lafia and Awe Local Government Areas of the State, referred to as Middle Benue trough. 100 samples were collected during peak of dry season and another 100 during peak of rainy season. Cations, anions and heavy metals were analyzed using atomic absorption spectrometry (AAS); with aim of determining their concentrations in relation to suitability within the tolerance limit. The results revealed that heavy metals such as lead (Pb), manganese (Mn), Magnesium (Mg) and arsenic (As) have concentrations above World Health Organization (WHO 2017) and SON (2015) standards. The high concentrations are mostly associated with the Baryte and Lead-zinc mineralization present in Keana / Awgu formations in the Middle Benue Trough. Zinc (Zn), copper (Cu), cadmium (Cd), and iron (Fe2+) have their concentrations within World Health Organization (WHO 2017) drinking water permissible limits. The cations and anions present in the groundwater in the study areas had varying levels in terms of physico-chemical and bacteriological quality. In some areas bacteriological contamination rendered water sources unfit for human consumption, but suitable for agricultural purposes. Therefore, regular monitoring of the water sources in the affected areas are highly recommended.
Clarification of recycled water of gas cleaning of a blast furnace using a water-dispersible flocculant
Authors: Еремеев Д.Н. , Груздев С.В.
Published: February 2023

Приведены результаты лабораторного тестирования по подбору оптимального флокулянта для осветления оборотной воды газоочистки доменной печи. Лабораторное тестирование проводили по стандартной методике отстаивания (осветления) в стаканах. Показано, что применение жидкого вододисперсионного флокулянта АТЕ12520 позволяет успешно удалять взвешенные вещества и мутность из оборотной воды газоочистки. Предложенная программа реагентной обработки была рекомендована к промышленным испытаниям для осветления оборотной воды системы газоочистки доменной печи одного из металлургических заводов в России. Рекомендуемый для испытаний диапазон дозировки флокулянта АТЕ12520 (по товарному реагенту) в расчете на сточную воду, поступающую в радиальный отстойник, составляет 0,3–0,5 г/м3.

The results of laboratory testing of choosing the optimal flocculant for clarification of recycled water of blast furnace gas cleaning are presented. Laboratory testing was carried out according to the standard method of sedimentation (clarification) in glasses. It has been shown that the use of ATE 12520 liquid water-dispersible flocculant provides for the successful removal of suspended solids and turbidity from gas cleaning recycled water. The proposed chemical treatment program was recommended for commercial testing of the clarification system of gas cleaning recycled water of a blast furnace at one of the ironworks in Russia. The ATE 12520 flocculant dosage range recommended for testing (as commercial chemical) in terms of wastewater supplied to the circular sedimentation tank is 0.3–0.5 g/m3.
Combining ultrasonic treatment and ozonation for wastewater treatment of dyeing plants
Authors: Пилипенко М.В. , Дубина А.В. , Лихавицкий В.В.
Published: February 2023

Представлены результаты исследования эффективности очистки модельных и реальных сточных вод красильно-отделочных производств комбинированием ультразвуковой обработки и озонирования. Изучено влияние времени обработки, концентрации озона в газовой смеси на эффективность очистки. Эффективность очистки оценивали по оптической плотности и ХПК. В результате исследований было показано повышение эффективности очистки сточной воды до 12% при комбинировании флотации озоновоздушной смесью вместо воздуха с ультразвуковой обработкой. Данный эффект может быть связан, в первую очередь, с диспергированием пузырьков озоновоздушной смеси, что приводит к увеличению их суммарной поверхности и, соответственно, к увеличению кинетики массообмена – растворения озона.

The results of studying the efficiency of purification of model and real wastewater from dyeing and finishing works by combining ultrasonic treatment and ozonation are presented. The effect of the treatment time, ozone concentration in the gas mixture on the purification efficiency has been studied. The purification efficiency was evaluated by optical density and COD. As a result of the study up to 12% increase in the efficiency of wastewater treatment was shown while combining flotation with ozone-air mixture instead of air with ultrasonic treatment. This effect can be associated, first of all, with the dispersion of ozone-air mixture bubbles that results in an increase in the surface area, and, accordingly, in an increase in the kinetics of mass transfer – ozone dissolution.
Approaches to developing a digital transformation model for the Russian economy in the context of global challenges
Authors: Nogovitsyn M. A.
Published: February 2023

Aim. The presented study aims to propose and substantiate the structure and content of a model of the digital transformation of the Russian economy in the context of the implementation of the advanced economic development model to ensure the growth of gross domestic product (GDP) and technological sovereignty.Tasks. The authors analyze the current strategy for the digital transformation of the domestic economy; determine the directions and nature of its changes; formulate the concept of a digital transformation model for the Russian economy; propose and substantiate its structure and content; identify systems of interrelations and interactions between its key elements.Methods. The results and conclusions of this study are obtained by applying general and special scientific methods and techniques. The general scientific methods used include analysis and synthesis, forecasting, modeling, induction and deduction, scientific abstraction, observation, expert assessments, etc. Factor analysis is used as a special scientific method.Results. The strategic priorities of the formation and implementation of the digital transformation model for the Russian economy are analyzed and justified, including trends for technological sovereignty and a model of advanced development. The concept of the digital transformation model is clarified, its structure and content are presented as a complex dynamic system comprising a technological platform, a digital core (generating unique technologies and providing competitive advantages to the country at the global level), and cybersecurity subsystems ensuring efficiency and sustainability.Conclusions. The model of the digital transformation of national economy is a complex dynamic system that requires increased attention to ensuring its sustainability. The equilibrium state of such systems can be achieved using a stable mechanism of interaction between the strategy and the core of the model; rapid and high-quality generation and scaling of technologies from the core to the economy; a stable mechanism for strengthening and creating new relationships between the core of the model and high-tech markets. The model’s effectiveness is associated with Russia’s standing in the global economy in 2030, and it can be confirmed by such indicators as GDP growth, technological sovereignty (at least in critical areas) and technological parity with developed countries, a high share of high-tech industries in the structure of the economy, etc. Under the modern conditions of increased turbulence, all the proposals regarding the structure of the digital transformation model can be fairly considered as an intermediate working option with a solid foundation in the form of dedicated technologies and interconnections between elements.
Marketplace: Business management in a bilateral market
Authors: Torpishchev T. R.
Published: February 2023

Aim. The presented study aims to develop recommendations aimed at optimizing the entrepreneurial activity of a marketplace.Tasks. The author briefly describes the functioning of a marketplace; justifies the classification of the marketplace as a two-way platform; identifies and formalizes platform management tools; determines approaches to pricing; substantiates the need to choose different strategies depending on the stage of the marketplace lifecycle.Methods. Based on the performed analysis, the author uses Tirol and Roche's basic model of bilateral platforms, the concepts of subsidized pricing and price discrimination in combination with the basic methodological approaches of entrepreneurship theory.Results. Additions are made to the definition of the concept of marketplace, and the viability of considering it as a bilateral platform is substantiated. The study highlights and formalizes business management tools in the bilateral market, identifies the most effective approaches to pricing and substantiates the need to apply different strategies at different stages of the marketplace lifecycle. The author develops recommendations aimed at optimizing the entrepreneurial activity of the marketplace.Conclusions. Marketplace is actually a bilateral platform. At different stages of its lifecycle, different strategies are needed to optimize different indicators. It seems appropriate to use a subsidized pricing model.
Integrated reporting as a tool for increasing business information transparency in the era of digital transformation
Authors: Ignatova I. O. , Shmarova L. V.
Published: February 2023

Aim. The presented study aims to determine the information value of integrated reporting based on an analysis of information contained in the presented reporting model.Tasks. The authors analyze the content of integrated reporting; identify the information requests of its users and the use scope of data contained in it; consider the key factors of enterprise value creation reflected in integrated reporting.Methods. To analyze the content of integrated reporting, determine the information requests of its users and the use scope of its data, this study uses general scientific methods, such as examination of scientific literature, laws, and regulations, systematization of materials, analysis of schemes and comparable data presented in the form of tables, generalization and formalization of the obtained results. To identify the benefits that the company and its network receive from the transition to integrated reporting, the following general scientific methods are used: description and comparison, synthesis, detailing, abstraction, induction, deduction, systems approach, and chronological analysis.Results. A systems analysis of the integrated reporting model is performed. The components that make up the value of the organization are identified and information requests from the users of integrated reporting are determined. The use scope of public reporting data is defined. The factors of company value creation are considered. The benefits of the transition to integrated reporting are identified.Conclusions. The decision of companies to introduce integrated reporting into their accounting practices significantly contributes to increasing the transparency of the organization’s activities and improving its image, since the innovative reporting model contains information not only about the company’s performance, but also about future opportunities and threats to its development.
Ensuring the economic security of innovation activities of Russian enterprises
Authors: Anatskiy A. O.
Published: February 2023

Aim. The presented study aims to develop an economic security management system for innovation activities of Russian enterprises.Tasks. The author identifies the theoretical and practical aspects of ensuring the economic security of innovation activities of Russian enterprises and develops a model for ensuring the economic security of innovation activities with allowance for the identified problematic factors.Methods. This study uses the methods of bibliographic research, system analysis, synthesis, communication, and analogy; information and analytical collections of the Institute for Statistical Studies and Economics of Knowledge of the National Research University – Higher School of Economics; the results of Global Innovation Index research.Results. It is shown that creation of conditions necessary for conducting safe activities in the field of innovation facilitates the implementation of strategic goals to ensure Russia’s economic security and will also allow the country’s economy to switch to an innovative path of development. By investigating the methodology for calculating the global innovation index, the author proves that national policy in the field of ensuring the economic security of innovation activities should be carried out in five key directions: improving the system of institutions engaged in these activities, ensuring human capital development, expanding the strategic infrastructure of innovation activities, developing the domestic market of innovative goods, and developing the business through the application of the results of innovation activities.Conclusions. Implementation of state policy in these areas will make it possible to achieve high indicators of economic security of innovation activities. An unstructured, fragmented state policy that supports only certain key areas will not produce the desired result, which will be expressed in achieving a high degree of protection of innovation activities from internal and external threats.
SILICOSIS: A CURSE THAT NEEDS IDENTIFICATION
Authors: C. Singh Suresh , Yadav Pankaj , Kumar Awadesh , Kumar Arun , S. Bhoj Harendra , Gupta Amit , Verma Amit , K. Singh Harsh , Mishra Sonal , P. Sinha Rajeshwar
Published: February 2023

Silicosis is a well-known occupational lung illness that is frequently found in silica dust-exposed industries like stone
mining, sandblasting, quarrying, ceramics, and other industrial jobs like grinding, oil and gas, brick- and pottery-making
and berglass production. It is frequently characterized by coughing and shortness of breath. It is sporadically linked to tumors, tuberculosis (TB)
and lung cancer-causing agents like mycobacterial infections, autoimmune illnesses, etc. One of the most common occupational diseases in the
world, silicosis poses serious health risks to employees, especially in developing nations like India.
NORMATIVE DATA FOR RNFL THICKNESS IN NORTH INDIAN PAEDIATRIC POPULATION
Authors: Geevarghese Rabecca M.
Published: February 2023

Optical coherence tomography (OCT) is an established medical
imaging technique that uses light to capture micrometre resolution,
three-dimensional images from optical scattering media (e.g,
biological tissue). Optical coherence tomography is based on lowcoherence interferometry, typically employing near infrared light. The
use of relatively long wavelength light allows it to penetrate into the
scattering medium.
At present, OCT imaging is used extensively for imaging the macula,
optic nerve and RNFL, and aids in analysing the morphology and
1,2 quantifying changes in various disease states .
A STUDY OF ASSOCIATION OF LOW IRON STATUS AND FEBRILE SEIZURES IN CHILDREN AGED 6 MONTHS TO 60 MONTHS
Authors: Kurella Sai Surabhi , raju m.s. , vidya D.L. , Venkateswarlu M.
Published: February 2023

Background: Febrile seizures are the most common type of childhood seizures. The peak incidence is at 18 months of
age. Iron deciency alters the development of the hippocampus, neurons, delayed myelin maturation, slowing of auditory
and visual evoked potentials, impairment of energy metabolism, alteration in synaptic neurotransmitter which lessens the seizure threshold. These
effects are aggravated during febrile episodes thereby increasing the risk of occurrence of febrile seizures. To know the association Objective:
between low iron status with or without anemia and febrile seizures. A tot Results: al of 111 children with febrile seizures were taken into study.
Among them, 68 children (61.1%) had low serum iron levels and 43 (38.7%) children had normal serum iron levels. Iron deciency anemia was
found in 46 (41.4%) of them. Low iron status even without the development of anemia increa Conclusion: ses the risk of febrile seizures through
various nonhematological manifestations of iron deciency.
A RARE CASE OF POST TUBERCULAR PLEURAL EFFUSION WITH SEROPOSITIVE SYSTEMIC LUPUS ERYTHEMATOSUS WITH NSIP PATTERN INTERSTITIAL LUNG DISEASE
Authors: Kolte Sagar , Sontakke Anil , Ali Saood
Published: February 2023

Connective tissue disorders like systemic lupus erythematosus can have serious pulmonary complications like ILD. In
this case report we had studied 25year male patient who came to OPD of Department of Respiratory Medicine NKPSIMS
AND RC Nagpur Maharashtra, with complaint of breathlessness on exertion since 3-4 years and was on medication. Patient was case of post
tubercular pleural effusion with Systemic Lupus Erythematosus(seropositive) with ILD. X ray chest showed prominent broncho-vascular
markings in bilateral lung lobes. Pulmonary Function test showed Moderate Restriction with moderate obstruction with small airway disease.
ANA & Anti-cardiolipin antibody tests were positive. Patient got symptomatically relief after starting tab Deazacort (oral steroids) and inhaled
corticosteroids formoterol and beclomethasone (Inhaler) with hydroxychloroquine tablet. Thus, concluding that early treatment of SLE leads to
better remission of ILD.
PROGNOSTIC FACTORS FOR LYMPH NODE INVOLVEMENT, DISEASEFREE SURVIVAL AND OVERALL SURVIVAL IN PENILE CANCER
Authors: Guimaraes Corradi Rodrigo , Lopes Salazar Andre , Afonso Reis Edna
Published: February 2023

Background Penile Cancer (PC) is a rare neoplasm. The most important PC prognostic factor is inguinal lymph node
(ILN) involvement (pN+). Inguinal lymphadenectomy (ILND) is the most accurate method for ILN staging. Due to high
morbidity and quality of life impairment, alternative staging modalities have been researched. This epidemiological study aims to assess risk
factors to determine prognosis in PC patients. A retrospective review was Methods conducted on 84 PC patients. Mean age was 58.68 (12.98)
years. Thirty-Eight (45.3%) patients underwent ILND. The main reasons were primary tumor staging (pT2 and up) and palpable nodes (cN+) in
physical examination. For pN+ risk, cN+, tumor inltration of penile body, dartos, spongios Results um and corpora cavernosa, as well as
perineural and lymph vascular invasion (LVI) were signicant. For recurrence and metastasis, cN+, penile body invasion, LVI, corpora
cavernosa invasion and pN+ showed statistical signicance. In overall survival (OS) evaluation, cN+, LVI, penile body, dartos, spongiosum and
corpora cavernosa invasion, pT and pN+ presented worst prognosis. In multivariate analysis, cN+ was a risk factor for pN+. Cox regression
analysis was also performed. Factors that decreased disease-free survival (DFS), were cN+, penile body, dartos or corpora cavernosa invasion
and pN+. When applied to OS, cN+, penile body invasion, LVI, dartos invasion, pT and pN+ were related to worst survival. Most patients
(67.5%) stayed disease free. Recurrence was more common on ILN (14.3%). When metastatic (10.7%), mortality was 55.6%.
Conclusion This study conrmed several risk factors for pN+, DFS and OS on PC patients.
BRADYCARDIA-AN ALARMING SIGN IN DENGUE FEVER
Authors: Haritha Reddy Bathala , Charan Sai Sandhireddy , Kumar Reddy Rachepalli Sandesh
Published: February 2023

Dengue Fever is one of the most common vector borne disease which is caused by bite of Aedes aegypti in Tropical parts of world. Bleeding
manifestations are most common signs due to Thrombocytopenia. Relative Bradycardia which is becoming one of the cause of mortality in Dengue
Fever. This study aims to observe, changes in Heart rate in Dengue Fever. Materials and methods: This was an observational study done at
Narayana medical college and hospital, Nellore, from June 2021 to October 2022 on 150 patients satisfying inclusion and exclusion criteria,
demographic data and clinical features and laboratory evaluation was done for patients in the study vitals signs (pulse/heart rate, Blood pressure,
respiratory rate, temperature) was noted for all patients. Results: Out of 150 patients, 43.3% have relative bradycardia and 30% patients have
absolute bradycardia with ECG showing sinus bradycardia in 28% of patients. Conclusion: Relative bradycardia in dengue fever patients is
present in association with thrombocytopenia and is important contributing factor to mortality in patients with dengue fever.
A CLINICAL OBSERVATIONAL STUDY OF SKIN CHANGES SEEN IN PREGNANCY.
Authors: Sindhu C , Priyadarshini Anuradha , Veeraraghavan Mahalakshmi
Published: February 2023

Pregnancy is a state of signicant metabolic, endocrinological, immunological and vascular changes which lead to varied cutaneous changes. The
cutaneous manifestations could be physiological changes, pregnancy specic dermatoses and skin conditions that are affected by pregnancy. The
aim of this study was to nd the incidence of pregnancy dermatoses and characterize the various cutaneous manifestations seen in pregnant women.
Methods: It was a cross-sectional descriptive study done over 2-year period from September 2016 to September 2018. All pregnant women
presenting to the dermatology outpatient with complaints of skin disorders were recruited for the study. Informed consent was taken and the
detailed examination ndings recorded. A total of 200 pregnant women were included i Results: n the study. Mean age was 25.5 years. Majority of
participants were primigravida 130(65%). Most common presenting complaint (126 cases, 63%) was itching. Majority of participants (113)
presented in the third trimester. Physiological skin changes pertaining to pregnancy was noted in 91(45.5%) participants, 156(78%) had pregnancy
non-specic dermatoses and 39(19.5%) had pregnancy specic dermatoses. Hyperpigmentation and striae gravidarum were seen in 24% pregnant
women. Among the pregnancy-nonspecic dermatoses infections was the most common condition (76 cases, 38%). Fungal infections constituted
the majority, followed by viral and bacterial infections. STI were seen in 5 patients. Polymorphic eruption of pregnancy was the most common
pregnancy specic dermatoses seen in 38 (19%) women. Thirty-three of these patients were primi in their 3rd trimester, 5 were in 2nd trimester.
Atopic eruption of pregnancy was seen only in 1(0.5%) participant. Hyperpigmentation and stria Conclusion: e gravidarum are the most common
physiological changes seen in pregnancy. Pregnancy predisposes to a wide variety of infections of which fungal infections are most common,
followed by viral. Polymorphic eruption of pregnancy is the most common pregnancy specic dermatoses.
Komitmen Uni Eropa Dalam Mengurangi Kemiskinan di Romania
Authors: Blegur Graha Christi , Barus Lita Sari
Published: February 2023

Setelah disepakatinya Strategi Eropa 2020, Uni Eropa memiliki sejumlah program inisiatif dan mekanisme serta platform untuk memastikan tujuan dari Strategi 2020 tercapai. Secara kawasan, Strategi 2020 tidak mencapai target, namun progress dari setiap negara cukup menunjukan perubahan positif. Salah satunya adalah negara Romania yang pada tahun 2010 baru tiga tahun menjadi anggota Uni Eropa dan menjadi satu negara paling miskin saat Strategi Eropa 2020 diterapkan. Dengan indicator AROPE serta pengukuran yang dimiliki oleh Uni Eropa, Romania menjadi negara kedua dengan progress pengurangan angka kemiskinan paling banyak (secara %) dalam jangka waktu 10 tahun. Mulai dari negara tinggi % kemiskinan menjadi negara dengan progress yang cukup baik di antara negara lain di Uni Eropa. Komitmen Uni Eropa dan kerjasama antar negara dalam perspektif integrase kawasan melalui teori neofungsionalisme menjadi alat bantu dari penelitian ini untuk melihat platform dan mekanisme apa yang menyebabkan progress dari Romania serta bagaimana komitmen Uni Eropa, khususnya melalui platform Strategi Eropa 2020.