bluuebunny/crossref_metadata_2025 huggingface dataset:
Lead-Free BiFeO3-Based Piezoelectrics: A Review of Controversial Issues and Current Research State
Authors: Kim Sangwook , Nam Hyunwook , Calisir Ilkan
Published: June 2022

Lead-free electroceramics represent an emerging area of research that has the potential to enable new green advances in electronics. Research has mainly focused on the development of new piezoelectric materials for replacing lead containing oxides exhibiting superior electromechanical behavior. Lead-free BiFeO3-based materials are not only the promising candidates to replace lead-based materials but also show intriguing properties which may inspire innovative material design for the next generation of lead-free piezoceramics. This review aims to highlight the current state of research and overlooked aspects in lead-free BiFeO3-based ceramics, which could be insightful in elucidating certain controversial issues. Current strategies to reduce high conductivity, influence of chemical heterogeneity on both functional properties and crystal structure, effective heat treatment procedures, and the role of pseudo-cubic structures on the enhancement of piezoelectric properties are subjects of highlighted within this review as they have a significant impact on the quality of BiFeO3-based lead-free piezoelectrics (but are often disregarded).
Accelerating Effects of Flow Behavior Index n on Breakup Dynamics for Droplet Evolution in Non-Newtonian Fluids
Authors: Zhang Jinsong , Han Yufeng , Wang Zhiliang
Published: June 2022

This paper studied the evolution of NaAlg solution micro-droplet in a coaxial microchannel. The Bird–Carreau model was used to characterize the flow properties of NaAlg solution. As the mass fraction decreased, the flow behavior index n also decreased, indicating that the NaAlg solution was increasingly shear-thinning. There were three stages during the micro-droplet evolution, which were the growth stage, the squeezing stage, and the pinch-off stage. This paper led the flow behavior index n to estimate the effects of rheological property on the breakup dynamics of micro-droplet. We proposed two new prediction models of the minimum neck width wm which were affected by |n| in the squeezing and pinch-off stages for the non-Newtonian fluids. In addition, this paper indicated the rate ratio Qd/Qc was another factor on the wm model in the squeezing stage and the H(λ) of Stokes mechanism was a function governed by |n|2 in the pinch-off stage.
Phase Equilibrium and Microstructure Examinations of Eutectic Fe-C-Mn-B Alloys
Authors: Pashechko Mykhaylo , Tisov Oleksandr
Published: June 2022

In this study, we analyzed the quaternary Fe-C-Mn-B system to create new eutectic cast alloys for coating deposition and additive manufacturing. Experimental samples were fabricated via the wire arc manufacturing method with argon shielding using Kemppi Pro 5200 Evolution equipment. Annealing was performed in a vacuum electric furnace at 1273 K for 350 h. For phase analyses, Jeol Superprobe 733 equipment was used. Metallographic and differential thermal analyses were used to reveal the eutectic structure of the samples. Examinations of the quaternary Fe-C-Mn-B system demonstrated that several eutectic alloys existed in the system. Four isothermal pseudo-ternary sections of the Fe-C-Mn-B system were studied: “Fe3B”-Fe3C-“Fe3Mn”; Fe2B-“Fe2C”-“Fe2Mn”; “Fe3B”-Fe3C-“Fe1.2Mn”; “Fe23B6”-“Fe23C6”-“Fe23Mn”. Broad eutectic concentrations enabled us to overcome parameter fluctuations during additive manufacturing. In each isothermal section, two dissimilar phase regions were determined: one with a ternary Fe-C-B composition and the other with a ternary Fe-C-Mn composition. Depending on the manganese content, two types of solid solutions could be formed: (Fe, Mn)α or (Fe, Mn)γ.
The Local Structure and Metal-Insulator Transition in a Ba3Nb5−xTixO15 System
Authors: Pugliese G. M. , Capone F. G. , Tortora L. , Stramaglia F. , Simonelli L. , Marini C. , Kondoh Y. , Kajita T. , Katsufuji T. , Mizokawa T. , Saini N. L.
Published: June 2022

The local structure of the filled tetragonal tungsten bronze (TTB) niobate Ba3Nb5−xTixO15 (x = 0, 0.1, 0.7, 1.0), showing a metal-insulator transition with Ti substitution, has been studied by Nb K-edge extended X-ray absorption fine structure (EXAFS) measurements as a function of temperature. The Ti substitution has been found to have a substantial effect on the local structure, that remains largely temperature independent in the studied temperature range of 80–400 K. The Nb-O bonds distribution shows an increased octahedral distortion induced by Ti substitution, while Nb-Ba distances are marginally affected. The Nb-O bonds are stiffer in the Ti substituted samples, which is revealed by the temperature dependent mean square relative displacements (MSRDs). Furthermore, there is an overall increase in the configurational disorder while the system with Nb 4d electrons turns insulating. The results underline a clear relationship between the local structure and the electronic transport properties suggesting that the metal-insulator transition and possible thermoelectric properties of TTB structured niobates can be tuned by disorder.
Modification Strategies of Ni-Based Catalysts with Metal Oxides for Dry Reforming of Methane
Authors: Gao Xingyuan , Lin Weihao , Ge Zhiyong , Ge Hongming , Kawi Sibudjing
Published: June 2022

Syngas generated from the catalytic dry reforming of methane (DRM) enables the downstream production of H2 fuel and value-added chemicals. Ni-based catalysts with metal oxides, as both supports and promoters, are widely applied in the DRM reaction. In this review, four types of metal oxides with support confinement effect, metal-support interaction, oxygen defects, and surface acidity/basicity are introduced based on their impacts on the activity, selectivity, and stability of the Ni-based catalyst. Moreover, the structure–performance relationships are discussed in-depth. Finally, conclusive remarks and prospects are proposed.
Molecular-Scale Hardware Encryption Using Tunable Self-Assembled Nanoelectronic Networks
Authors: Venkataraman Anusha , Amadi Eberechukwu , Papadopoulos Chris
Published: June 2022

Nanomaterials are promising alternatives for creating hardware security primitives that are considered more robust and less susceptible to physical attacks compared to standard CMOS-based approaches. Here, nanoscale electronic circuits composed of tunable ratios of molecules and colloidal nanoparticles formed via self-assembly on silicon wafers are investigated for information and hardware security by utilizing device-level physical variations induced during fabrication. Two-terminal electronic transport measurements show variations in current through different parts of the nanoscale network, which are used to define electronic physically unclonable functions. By comparing different current paths, arrays of binary bits are generated that can be used as encryption keys. Evaluation of the keys using Hamming inter-distance values indicates that performance is improved by varying the ratio of molecules to nanoparticles in the network, which demonstrates self-assembly as a potential path toward implementing molecular-scale hardware security primitives. These nanoelectronic networks thus combine facile fabrication with a large variety of possible network building blocks, enabling their utilization for hardware security with additional degrees of freedom that is difficult to achieve using conventional systems.
Chemical Composition and Anti-Urolithiatic Activity of Extracts from Argania spinosa (L.) Skeels Press-Cake and Acacia senegal (L.) Willd
Authors: El oumari Fatima Ezzahra , Bousta Dalila , Imtara Hamada , Lahrichi Anissa , Elhabbani Radouane , El mouhri Ghita , Al kamaly Omkulthom , Saleh Asmaa , Parvez Mohammad Khalid , Grafov Andriy , Sqalli Houssaini Tarik
Published: June 2022

Ethnobotanical studies have reported the traditional medicinal uses of Acacia senegal (L.) Willd. and Argania spinosa (L.) Skeels against kidney stone formation and other chronic kidney diseases. The present work is undertaken to study the litholytic activity and the inhibiting activity of calcium oxalate crystallization by bioactive compounds identified in Argania spinosa (L.) Skeels press-cake (residue of Argan oil) and in Acacia senegal (L.) Willd. The litholytic activity was studied in vitro on cystine and uric acid stones using a porous bag and an Erlenmeyer glass. The study of the inhibiting activity of calcium oxalate crystallization, was based on temporal measurements of the optical density, registered at a 620 nm wavelength for 30 min using an ultraviolet–visible spectrophotometer. The silylation method was performed to identify phytochemicals, followed by gas chromatography coupled with mass spectrophotometry (GC/MS) analysis. The results show significant litholytic activity of Argania Spinosa press-cake hydro-ethanolic extract on uric acid and cystine stones, respectively, with dissolution rates (DR) of 86.38% and 60.42% versus 3.23% and 9.48% for the hydro-ethanolic extract of Acacia senegal exudate. Furthermore, the percentages of nucleation inhibition are 83.78% and 43.77% (p ˂ 0.05) for Argania spinosa and Acacia senegal, respectively. The results point to the detection of 17 phytochemicals in Argania spinosa press-cake extract, the majority of which are phenolic acids and have potent anti-urolithiatic action.
Synthesis, Crystal Structures, Lipophilic Properties and Antimicrobial Activity of 5-Pyridylmethylidene-3-rhodanine-carboxyalkyl Acids Derivatives
Authors: Żesławska Ewa , Zakrzewski Robert , Nowicki Arkadiusz , Korona-Głowniak Izabela , Lyčka Antonín , Kania Agnieszka , Zborowski Krzysztof Kazimierz , Suder Piotr , Skórska-Stania Agnieszka , Tejchman Waldemar
Published: June 2022

The constant increase in the resistance of pathogenic bacteria to the commonly used drugs so far makes it necessary to search for new substances with antibacterial activity. Taking up this challenge, we obtained a series of rhodanine-3-carboxyalkyl acid derivatives containing 2- or 3- or 4-pyridinyl moiety at the C-5 position. These compounds were tested for their antibacterial and antifungal activities. They showed activity against Gram-positive bacteria while they were inactive against Gram-negative bacteria and yeast. In order to explain the relationship between the activity of the compounds and their structure, for selected derivatives crystal structures were determined using the X-ray diffraction method. Modeling of the isosurface of electron density was also performed. For all tested compounds their lipophilicity was determined by the RP-TLC method and by calculation methods. On the basis of the carried-out research, it was found that the derivatives with 1.5 N···S electrostatics interactions between the nitrogen atom in the pyridine moiety and the sulfur atom in the rhodanine system showed the highest biological activity.
Monitoring of Pollutants Content in Bottled and Tap Drinking Water in Italy
Authors: Russo Giacomo , Laneri Sonia , Di Lorenzo Ritamaria , Neri Ilaria , Dini Irene , Ciampaglia Roberto , Grumetto Lucia
Published: June 2022

The concentration levels of thirteen organic pollutants and selected heavy metals were investigated in 40 plastics bottled and tap water samples. Some of the selected contaminants have an ascertained or suspected endocrine disrupting activity, such as Bisphenol A (BPA) and its analogs, and Bis 2-ethylhexyl phthalate (DEHP), which are used by industries as plasticizers. The most frequently detected pollutants were Bisphenol AF (BPAF) (detection frequency (DF) = 67.5%, mean 387.21 ng L−1), DEHP (DF = 62.5%, mean 46.19 µg L−1) and BPA (DF = 60.0%, mean 458.57 ng L−1), with higher concentration levels found in tap waters. Furthermore, a possible level of exposure to thirteen pollutants via drinking water intake was calculated. Our findings show that, even though the occurrence of contaminants and heavy metals in drinking waters does not pose an immediate, acute health risk for the population, their levels should be constantly monitored and “hard-wired” into everyday practice. Indeed, the health impact to the continuous and simultaneous intake of a huge variety of xenobiotics from various sources by humans is complex and still not fully understood.
Identification of Anti-Proliferative Compounds from Genista monspessulana Seeds through Covariate-Based Integration of Chemical Fingerprints and Bioactivity Datasets
Authors: Díaz Luis , Cely-Veloza Willy , Coy-Barrera Ericsson
Published: June 2022

Genista monspessulana (L.) L.A.S. Johnson (Fabaceae) is a Mediterranean plant introduced to South America and other regions for ornamental purposes. However, it is considered an invasive shrub due to its reproductive vigor in many areas. Unlike other Genista plants, G. monspessulana has few studies disclosing its biologically active components, particularly cytotoxic agents against cancer cells. Thus, as part of our research on anti-proliferative bioactives, a set of ethanolic seed extracts from ten accessions of G. monspessulana, collected in the Bogotá plateau, were evaluated against four cell lines: PC-3 (prostate adenocarcinoma), SiHa (cervical carcinoma), A549 (lung carcinoma), and L929 (normal mouse fibroblasts). Extracts were also analyzed through liquid chromatography coupled with mass spectrometry (LC/MS) to record chemical fingerprints and determine the composition and metabolite variability between accessions. Using multiple covariate statistics, chemical and bioactivity datasets were integrated to recognize patterns and identify bioactive compounds among studied extracts. G. monspessulana seed-derived extracts exhibited dose-dependent antiproliferative activity on PC-3 and SiHa cell lines (>500 µg/mL < IC50 < 26.3 µg/mL). Seven compounds (1–7) were inferred as the compounds most likely responsible for the observed anti-proliferative activity and subsequently isolated and identified by spectroscopic techniques. A tricyclic quinolizidine (1) and a pyranoisoflavone (2) were found to be the most active compounds, exhibiting selectivity against PC-3 cell lines (IC50 < 18.6 µM). These compounds were used as precursors to obtain a quinolizidine-pyranoisoflavone adduct via Betti reaction, improving the activity against PC-3 and comparable to curcumin as the positive control. Results indicated that this composition–activity associative approach is advantageous to finding those bioactive principles efficiently within active extracts. This correlative association can be employed in further studies focused on the targeted isolation of anti-proliferative compounds from Genista plants and accessions.
Metformin Promotes Axonal Regeneration and Functional Recovery in Diabetic Rat Model of Sciatic Nerve Transection Injury
Authors: Ma Junxiong , Liu Jun , Chen Yu , Yu Hailong , Xiang Liangbi
Published: June 2022

In our previous study, metformin was able to promote nerve regeneration after sciatic nerve crushing in rats under diabetic conditions. However, a crush injury also has a strong ability to spontaneously recover. Therefore, in our present study, a model of transection injury of the sciatic nerve in diabetic rats was utilized to detect whether metformin could still promote nerve regeneration. Diabetes was induced via an injection of 50 mg/kg of streptozotocin in rats. After transection injury of the sciatic nerve, the rats were randomly divided into a high-dose metformin group (500 mg/kg/d), mid-dose metformin group (200 mg/kg/d), low-dose metformin group (30 mg/kg/d) and control group (normal saline). The metformin or normal saline was intraperitoneally injected for 4 weeks. Then, behavioral, electrophysiological and morphometric analyses were performed. The results showed that metformin could significantly promote functional restoration and axonal regeneration of the sciatic nerve after transection injury under diabetic conditions. Furthermore, high doses and middle doses of metformin presented more of this ability than a low dose of metformin. In conclusion, metformin is able to accelerate sciatic nerve repair after transection injury under diabetic conditions, showing the therapeutic potential of metformin in the management of nerve injuries during diabetes mellitus.
Early Introduction of Allergenic Foods and the Prevention of Food Allergy
Authors: Trogen Brit , Jacobs Samantha , Nowak-Wegrzyn Anna
Published: June 2022

The increasing prevalence of food allergies is a growing public health problem. For children considered high risk of developing food allergy (particularly due to the presence of other food allergies or severe eczema), the evidence for the early introduction of allergenic foods, and in particular peanut and egg, is robust. In such cases, the consensus is clear that not only should such foods not be delayed, but that they should be introduced at approximately 4 to 6 months of age in order to minimize the risk of food allergy development. The early introduction of allergenic foods appears to be an effective strategy for minimizing the public health burden of food allergy, though further studies on the generalizability of this approach in low-risk populations is needed.
The Tapeworm and Maria Callas’ Diet: A Mystery Revealed
Authors: Zarzo Inmaculada , Merino-Torres J. Francisco , Trelis María , Soriano Jose M.
Published: June 2022

Maria Callas’ diet, also known as the tapeworm diet, is a non-food-based hazardous treatment. This study aims to justify whether Maria Callas used this treatment for weight loss. To investigate this, we searched in the ‘white’, ‘grey’, and ‘black’ literature. The historical facts about the use of tapeworm pills seem to be inconsistent and include fake news. In the case of Maria Callas, it has been confirmed by her biography and personal communications that she was diagnosed with a beef tapeworm due to eating uncooked meat. This discredits the hypothesis that she consumed tapeworm pills.
Increased Insulin Resistance in Hepatitis-C Infection—Association with Altered Hepatic Function Testing
Authors: Mishra Praveen Raman , Bharti Akash , Arora Ridhi , Mir Irfan Ahmad , Punia V. P. S.
Published: June 2022

Introduction: Hepatitis C virus (HCV) infection is a serious global public health problem. It is estimated that 2% to 3% of the world’s population is infected with the virus. It was found that chronic hepatitis C is an independent predictor of the development of type 2 diabetes mellitus. Infection with HCV or the inflammatory response to HCV infection likely contributes to the development of insulin resistance (IR), which increases the risk of developing type 2 diabetes in the long term. This study aimed to assess the insulin resistance in hepatitis C and its correlation with various metabolic parameters. Materials and Methods: This cross-sectional observational study was conducted at a tertiary care hospital in North India in the Department of Internal Medicine with hepatitis C-positive patients attending an out-patient or in-patient department. We took a total of 100 patients aged > 18 years and divided them into two groups: Group A with hepatitis C (cases) and Group B without hepatitis C (controls). There were a total of 50 hepatitis C patients and 50 patients without hepatitis C. Results: A total of 100 patients were included in the present study after obtaining informed consent. There was a significantly higher level of serum ferritin and insulin in group A patients than group B patients. There was a positive correlation of insulin resistance with the serum insulin, ferritin levels, cholesterol, LDL and triglyceride level and a negative correlation with the serum HDL level. The incidence of insulin resistance was positively correlated with changes in fibrosis in the liver due to the hepatitis C infection. Conclusions: From our study, we found that there is an increased incidence of insulin resistance in the patients with hepatitis-C infection, and insulin resistance is associated with the presence of altered hepatic function test results.
Aesthetic Gadgets: Rethinking Universalism in Evolutionary Aesthetics
Authors: Kiianlinna Onerva
Published: June 2022

There is a growing appetite for the inclusion of outcomes of empirical research into philosophical aesthetics. At the same time, evolutionary aesthetics remains in the margins with little mutual discussion with the various strands of philosophical aesthetics. This is surprising, because the evolutionary framework has the power to bring these two approaches together. This article demonstrates that the evolutionary approach builds a biocultural bridge between our philosophical and empirical understanding of humans as aesthetic agents who share the preconditions for aesthetic experience, but are not determined by them. Sometimes, philosophers are wary of the evolutionary framework. Does the research program of evolutionary aesthetics presuppose an intrinsic aesthetic instinct that would determine the way we form aesthetic judgments, regardless of the environment with which we interact? I argue that it does not. Imitation and mindreading are considered to be central features of the aesthetic module. Recently, and contrary to the prior view, it has been shown that imitation and mindreading are not likely to be innate instincts but socially learned, yet evolved patterns of behavior. Hence, I offer grounds for the idea that the cognitive aesthetic module(s) is socially learned, too. This outcome questions the need for the traditional differentiation between empirical and philosophical aesthetics.
Ultra-Broadband and Low-Loss Silicon-Based Power Splitter Based on Subwavelength Grating-Assisted Multimode Interference Structure
Authors: Shi Yuchen , Shao Bo , Zhang Zhekang , Zhou Taotao , Luo Fan , Xu Yin
Published: June 2022

High-performance and compact power splitters are fundamental components in on-chip photonic integrated circuits (PICs). We propose a silicon-based power splitter based on a subwavelength grating (SWG)-assisted multimode interference (MMI) structure. To shorten the device size and enhance the device performance, an inverse-tapered SWG is embedded in the central region of the MMI and two rows of uniform SWG are embedded on both sides, together with two right-angled cutting structures on the input side. According to the results, the MMI length was obviously reduced to 3.2 μm (5.2 μm for conventional MMI structure under the same waveguide width), while the insertion loss (IL) and reflection loss were 0.08 dB and <−35 dB, respectively. Moreover, the allowable working bandwidth could be extended to 560 nm by keeping IL <0.6 dB, covering the whole optical communication band. On the basis of these features, we believe that such a power splitter is very promising for building on-chip large-scale PICs where power splitting is indispensable.
Green Assessment of Chromatographic Methods Used for the Analysis of Four Methamphetamine Combinations with Commonly Abused Drugs
Authors: Alharthy Saif A. , Alharthi Muath A. , Almalki Sultan A. , Alosaimi Sattam H. , Aqeel Abdullah H. , Altowairqi Sultan A. , Alsalahat Izzeddin , Panda Dibya Sundar , Alsheikh Mona Y. , Naguib Ibrahim A.
Published: June 2022

Numerous agents with anxiolytic or stimulant effects have the potential to be overused, and their misuse is associated with serious side effects. In Saudi Arabia, the estimated percentage of Saudis who abuse drugs is around 7–8% and the age range is 12–22 years. Methamphetamine, captagon, tramadol, heroin, and cannabis/cannabinoids have been proven to be the most commonly abused drugs in Saudi Arabia, with methamphetamine being at the top of the list. The present study focuses on the chromatographic analytical methods used for the analysis of methamphetamine in combination with commonly abused drugs, aiming to point out the greenest among them. These mixtures have been chosen as they are analyzed periodically and frequently in criminal evidence and forensic medicine. Therefore, the chances of hazards for analysts and the environment are high if the mixtures are not handled appropriately. This study aims to compare 23 chromatographic methods used for the analysis of methamphetamine mixtures in four major combinations, and to assess their greenness by using three greenness assessment tools, namely, NEMI, ESA and AGREE, to recommend the greenest analytical method. The NEMI results were proven to have low discriminating abilities and, accordingly, the comparisons are based on ESA and AGREE scores. The analysis results show that the safest methods with the most eco-friendly results (based on ESA and AGREE) are the GC-MS method proposed by Mohammed et al. to analyze methamphetamine and captagon mixtures (ESA = 79 and AGREE = 0.57), the UHPLC–MS-MS method proposed by Busardò et al. to analyze methamphetamine and cannabis/cannabinoid mixtures (ESA = 78 and AGREE = 0.57), the LC-MS method proposed by Herrin et al. to analyze methamphetamine and tramadol mixtures (ESA = 81 and AGREE = 0.56), and the LC-MS method proposed by Postigo-et al to analyze methamphetamine and heroin mixtures (ESA = 76 and AGREE = 0.58).
Systemic Nationalism — the Baltics states on the way from pseudo-democracy to a new fascism
Authors:   Diplomatic Academy of the Ministry of Foreign Affairs of Russia, Zhilina Ludmila Nikolaevna
Published: June 2022

The article shows that today all the Baltic countries are united in their views on the outcome of the Second World War and relations with Russia. Official propaganda, the elite and the ruling circles of the Baltic States constantly position Russia as the main threat to stability in the region and the world and constantly replicate the thesis of the USSR's fault in the current problems of the development of their state. It is emphasized that Latvia, like Lithuania and Estonia, evokes associations of a consistent anti-Russian irritant in the domestic and international public consciousness. The author shows that in the Baltic countries the phenomenon of collaboration during the Second World War had a specific national peculiarity and was associated with the hope of local elites that the military presence of Germany would allow them to recreate the nation-states in the former, pre-war format. The author notes that attempts to compensate for the inability to conduct a creative policy with Russophobia and revanchism will end, unfortunately, not tomorrow. The author examines the main reasons why the authorities of the Baltic countries are so tolerant of neo-Nazis. However, at the same time, Russia stands for balancing and leveling relations with the Baltic States and maintaining them at a level that allows for a fairly effective political dialogue and developing economic ties. Moreover, as the author notes, the situation can change quite quickly and radically with the appearance of real independent personalities in this political environment who are able to resolutely defend the truly national interests of the population of their countries, which, ultimately, will restore the regional and international authority of the Baltic countries and increase their attractiveness both politically and economically.
Competitiveness of leasing goods
Authors:   Department of International Commerce of the Russian Academy of National Economy and Public Administration under the President of the Russian Federation, Nikolaeva M. A.
Published: June 2022

The article discusses the concepts of leasing goods, their competitiveness, signs of competing goods. The types of leasing competitor goods are given. The criteria and indicators of competitiveness assessment are shown, as well as two models of competitiveness assessment, and one of them is the author's.
Advertising as a tool for promoting a hospitality product
Authors:   Professor of the Department of Tourism and Hospitality of the Voronezh State University of Engineering Technologies, Glagoleva L. E. , Zatsepilina N. P. ,   Department of Tourism and Hospitality of the Voronezh State University of Engineering Technologies, Kovaleva E. N. ,   Department of Higher Mathematics and Information Technologies of the Voronezh State University of Engineering Technologies, Zatsepilina L.S. ,   Faculty of Secondary Vocational Education of the Voronezh State University of Engineering Technologies, Sandberg A. B. ,   Faculty of Continuous Education of the Voronezh State University of Engineering Technologies, Sekhniev M. E. ,   Faculty of Economics and Management of the Voronezh State University of Engineering Technologies
Published: June 2022

The article considers advertising as an objective opportunity to promote projects in the service sector. It is shown that advertising can be considered as a means of mass communication, which, together with the activities of various media, has a predominant way of disseminating information, provides new opportunities for integrated marketing programs in the hospitality sector. The specifics of service management in this area of the market lies in the fact that advertising actively solves the problems of generating demand and stimulating supply, increasing sales through a system of measures aimed at building and maintaining certain relationships between the client and the seller of services.
Psychological weapons as a tool of the West’s hybrid war against Russia (part two)
Authors:   Ulyanovsk State University, Russia, Ulyanovsk, Kapkanshchikov Sergey Gennadyevich
Published: June 2022

The article reveals the structure of the leading economic and non-economic tools of the Western countries anti-Russian hybrid war with an emphasis on informational and psychological weapons. The main component of its widespread use in modern Russia is a cognitive weapon aimed at a radical change in the mentality of the population. In the economic sphere, the use of psychological weapons is associated with the widespread penetration of many purely liberal myths into the public consciousness, such as the myths about the unconditional advantages of private property over state property, the expediency of conscious formation of a budget surplus and, accordingly, the persistent accumulation of the National Wealth Fund in the conditions of resources underemployment, the investment of a significant part of international reserves in foreign financial assets, the counteraction to accelerating inflation by pursuing a purely restrictive monetary policy, the need for the full opening of the domestic economy to the outside world. Closely connecting the imposition of such false theories, designed to form a fake reality, with the destructive actions of the fifth column of pseudo-liberal national traitors, the author makes proposals aimed at the organizational consolidation of patriotic statist economists in modern Russia.
New approach of the Fed to the implementation of monetary policy
Authors:   Primakov National Research Institute of World Economy and International Relations of Russian Academy of Sciences (IMEMO RAS), Russia, Ranneva Nonna Alexandrovna
Published: June 2022

The focus of the article — current framework of implementation of monetary policy by the Federal Reserve System (the Fed), which is substantially different from the framework used before the crisis of 2007–2009. The contemporary regime was evolving gradually and for some time the Fed discussed two possible alternatives — return to the previously used regime or remain in the framework, formed after the crisis of 2007–2009. It took about 10 years for the Fed to decide: to conduct monetary policy in the "ample reserves" regime in which control over the short-term rates is exercised through the setting of administered rates, avoiding the need to actively manage the supply of reserves. In the article we discuss the similarities and differences between regimes with limited and ample-reserves, and the effectiveness of new regime during the pandemic crisis. Since the selected monetary policy implementation framework does not rely on precise adjustments of the supply of reserves to control short-term interest rates, the shift to operating at historically maximum reserve levels resulting from large-scale asset purchases during 2020–2021 was smooth, and the effective federal funds rate and other rates remained relatively stable in this period. We also consider the peculiarities of the use of standard and unconventional monetary policy tools during the COVID-19 pandemic, the reasons for introducing in 2021 the new tools and facilities of the Fed, and possible path of monetary policy in the conditions of growing infl ation and the removal of the current level of accommodation in 2022.
FAKTOR-FAKTOR YANG BERHUBUNGAN DENGAN KETERAMPILAN KADER DALAM STIMULASI DAN DETEKSI DINI TUMBUH KEMBANG BALITA
Authors: Islamiyati Islamiyati , Sadiman Sadiman
Published: June 2022

Monitoring pertumbuhan balita di Posyandu merupakan upaya yang sangat strategis untuk mendeteksi terjadinya gangguan perkembangan. Kader posyandu merupakan kelompok yang paling banyak berinteraksi dengan masyarakat, sehingga memiliki posisi yang sangat baik dan cara yang efektif untuk mendeteksi gangguan pertumbuhan dan perkembangan anak sejak dini. Tujuan penelitian untuk mengetahui faktor-faktor yang berhubungan dengan keterampilan kader dalam melakukan deteksi dini pertumbuhan dan perkembangan anak. Metode penelitian kuantitatif dengan rancangan cross sectional, dilakukan  September- Oktober 2020 di wilayah kerja Puskesmas Sritejokencono Lampung Tengah. Sampel 85 orang kader posyandu. Variabel dependen keterampilan kader dalam melakukan deteksi dini pertumbuhan perkembangan balita, variabel independen lama menjadi kader, pengalaman, dukungan tenaga kesehatan, pengetahuan, sikap, motivasi dan  sarana prasarana. Instrumen penelitian menggunakan kuisioner dan lembar unujk kerja. Hasil analisis data menggunakan uji regresi logistik ganda,  66% kader kurang terampil dalam melakukan deteksi dini tumbuh kembang anak. Simpulan ada hubungan yang simultan antara pengetahuan kader, sikap, motivasi dan dukungan tenaga kesehatan dengan keterampilan kader dalam melakukan stimulasi dan deteksi dini tumbuh kembang anak. Faktor dominan adalah pengetahuan dimana kader yang memiliki pengetahuan baik akan memiliki keterampilan 13,9 kali lebih baik dibandingkan kader yang memiliki pengetahuan kurang.
Ecological products and the role of influencers and greenfluencers in their promotion
Authors: Martovič Matej , Klementis Martin
Published: June 2022

Ecological themes are becoming a new phenomenon of the 21st century. More and more people are aware of social responsibility and the impact of their behavior on the environment. The aim of this paper is to analyze green energy in the offer of electricity providers. The analysis deals with the involvement of influencers and greenfluencers in the campaigns of electricity providers. It is the influencers and greenfluencers that can reach the right target group that has an ecological mindset. The question is whether the involvement of influencers and greenfluencers in green energy campaigns is effective. The aim of the paper is to find out how effective are green energy campaigns in Slovakia on the basis of an analysis. To do that, the paper used the social media measurement and reporting tool Zoomsphere.
Ticari Dışa Açıklık ve Ekonomik Büyüme Bağlantısı: BRICS Örneği
Authors: YENİPAZARLI Aslı , CAMBAZOĞLU Birgül , BEGEÇ Enis
Published: June 2022

Küreselleşmenin yayılma ve yansımasının sorgulandığı dünyada ticari açıklık ve ekonomik büyüme ilişkisi önemini korumaktadır. Geçmişten günümüze çeşitli zaman ve mekân farklılığına dayalı olarak bu ilişkiyi sorgulayan çalışmaların bazılarının negatif ve bazıları ise pozitif ilişki olduğuna dair bulgular sunmaları, bu hususta konsensüs sağlanamadığını göstermektedir. Bu doğrultuda BRICS örneklemi için ticari açıklık ve ekonomik büyüme arasında ilişki olup olmadığının ve varsa bu ilişkinin yönünün tespitiyle diğer araştırmalarda bulunan farklılıkların nedeninin açıklanmasının literatüre katkı sağlayacağı düşünülmektedir. Bu çerçevede çalışmanın amacı, BRICS ülkeleri için 1996-2020 yılları arasında literatür bulgularına ek olarak ekonomik büyüme üzerinde ticari açıklık derecesinin etkisinin ortaya konmasıdır. Çalışmanın sonucunda elde edilen bulgular: Dışa açıklık oranı ve döviz kuru değişkenlerinin, incelenen dönem aralığında ekonomik büyüme üzerindeki anlamlı olmakla birlikte pozitif yönlü tesirine karşın doğrudan yabancı yatırımlar değişkeninin ekonomik büyüme üzerinde etkisinin istatiksel olarak anlamlı olmadığına dairdir.
Devletin Dijitalleşmesini Tartışmak: Dijital Hükümet Literatürü Üzerine Bibliyometrik Bir Analiz
Authors: BUDAK Nazan , ÖZÇELİK Abdullah
Published: June 2022

Bu çalışma, bibliyometrik analiz yöntemi kullanarak, devletin dijitalleşmesiyle ilgili bilimsel çalışmaların genel görünümünü farklı açılardan ortaya koymayı amaçlamaktadır. Dijital hükümet, kamu sektörünün kamu yönetiminin bir sonraki aşamasına dönüşümünü ve Bilgi ve İletişim Teknolojisi (BİT) tabanlı hizmetlerin sunulmasını temsil eder. Devletin dijitalleşmesi kamu hizmetlerini iyileştirmenin, insanların katılımını, şeffaflığı, hesap verebilirliği ve kapsayıcılığı artırmanın bir yoludur. Çalışmada 1998'den 2022'e kadar WoS veri tabanındaki 764 doküman incelenmiştir. Dökümanlar Bibliometrix R Studio yazılımı ile sınıflandırılıp tasnif edilmiş ve görselleştirilmiştir. Çalışma "Digital Government”, “Digital Governance” anahtar kelimeleri kullanılarak filtrelenmiştir. Bu alanda 77 ülkede toplam 1465 yazarın çalışma yaptığı görülmüştür. En çok yayın yapan ülke 469’la ABD’dir. Yine en çok atıf yapan ülke 3876 ile ABD’dir. En fazla çalışma yapan kurum 47 yayınla Center for Technology in Government ve University at Albany, bu alanda en çok yayın yapan yazar 106 yayınla Marijn Janssen ve en üretken yayıncı Government Information Quartely dergisidir.
Molecular study of Cryptosporidium spp. among diarrheal patients at Wasit province, Iraq
Authors: Alkhanaq May Naji , Al-Hadidi Ghadeer Thamer
Published: June 2022

Cryptosporidium is a coccidian protozoan parasite infecting alimentary system and epithelial respiratory tract of humans and a wide range of vertebrates such as mammals, birds, reptiles, and fish. This study was carried out in Al-Kut city, Iraq, in two major hospitals: Al-Kut Hospital for Gynecology, Obstetric and Pediatric and Al-Karama Teaching Hospital, which included collection of stool samples from diarrheal patients. 96 stool samples taken from patients with different ages and both genders were examined by multiplex PCR technique. The results showed that the percentage of Cryptosporidium spp. infection was 39.6% and 4.2% for C. parvum and C. hominis, respectively. There are no statistically significant associates between gender and Cryptosporidium infection. The higher infection for C. parvum (41.2%) appeared in females, while the higher infection for C. hominis was found in male (4.8%). The study showed that the percentage of C. parvum infection in the rural areas is more than the urban, where the percentage in rural areas (52.9%) showed a significant difference at p = 0.004, while the infection rate for C. hominis was 6.7% in urban area. Regarding the water source, higher cryptosporidiosis rate was found in participants who used bottled water than in those who used tap water, and there is statistical significant between C. parvum infection and water source (p = 0.03), while the high infection in individuals who used bottled water were 58%. The present study aimed to determine the common Cryptosporidium species in diarrhea samples.
The physical characteristics and yield of grey oyster mushroom (Pleurotus sajor-caju) cultivated on sawdust and sago hampas as substrate
Authors: Mering Michelle Ngassy , Bolhassan Mohamad Hasnul , Awg-Adeni Dayang Salwani
Published: June 2022

In Malaysia, sawdust is widely used as a substrate for the cultivation of grey oyster mushrooms (Pleurotus sajor-caju). Due to the scarcity and increasing cost of sawdust, this research investigated the feasibility of employing sago hampas as an alternative substrate for the cultivation of P. sajor-caju. In Sarawak, sago hampas were discarded into the river together with wastewater or incinerated, causing water and air pollution. In this study, P. sajor-caju was grown in five different formulations which are 100% sawdust (100SD) as control, 100% sago hampas (100SH), 75% sawdust + 25% sago hampas (75SD:25SH), 50% sawdust + 50% sago hampas (50SD:50SH), and 25% sawdust + 75% sago hampas (25SD:75SH). The substrate was mixed with rice bran and calcium carbonate at a dry matter basis in the ratio of 100:10:1. For the biological efficiency, 50SD:50SH recorded the highest yield (115.07%) compared to singular substrate 100SD (19.52%) and 100SH (37.04%). The higher lignin content and moisture-holding capacity in 100SD might not give better physical characteristics of P. sajor-caju. At the end of the study, supplementation sawdust with sago hampas especially formulation 50SD:50SH is recommended as the best formulation to reduce sawdust and utilise sago hampas as an alternative substrate for P. sajor-caju.
Novel technology of high-aspect-ratio etch utilizing coverage-controllable atomic layer deposition
Authors: Kumakura Sho , Sasagawa Hironari , Nishizuka Tetsuya , Kihara Yoshihide , Honda Masanobu
Published: June 2022

We demonstrated a coverage-controllable sidewall protective film by controlling the degree of oxidation during plasma-enhanced SiO2 atomic layer deposition (ALD) as a novel technology to suppress bowing in a high-aspect-ratio-contact (HARC) hole etch process. By depositing SiO2 protective film with atomic order on only the top-local region of patterns, to suppress bowing was achieved during HARC etch without the shrinkage of the bottom critical dimension (CD) and etch-stop. In addition, we investigated the parameters that determine the ALD coverage to estimate the coverage profile of sidewall protective film. By analyzing the relationship between activation time and ALD film thickness at each AR, we confirmed that the coverage is determined by the transport of oxygen radical based on the Knudsen transport model. Furthermore, we developed an ALD simulator from the transport model, and successfully estimated the coverage of protective film during etching to improve the verticality of the HARC profile with small bowing-bottom CD bias.
How do smart devices control and changes the lifestyle habits of human being? A study in the context of Bangladesh
Authors:   Department of Sociology, University of Barishal, Bangladesh, Yasmin Farhana , Hossain Md. Alamgir ,   Department of Computer Science and Engineering, Prime University, Bangladesh
Published: June 2022

Abstract: Purpose: The research has been conducted to find out how the smart device is changing and controlling human’s social, cultural, and economic lifestyles. Research methodology: The study is quantitative in nature. The multiple-choice questionnaire has been prepared to collect the data from 261 respondents through the survey method using Google format and focusing on the simple random sampling technique. Here, data were analyzed through Microsoft Excel, handmade calculation. Results: The research found that respondents’ social life (71.65%), economic life (80.84%), and cultural life (79.31%) are shaped by smart devices in a positive way. Their social life (28.35%), economic life (19.16%), and cultural life (20.69%) are also shaped by smart devices in a negative way. The portion of positive change and control is more than the portion of negative. Limitations: The study is limited by sample size, geographical area, and data which are taken by using Google format instead of face-to-face interaction with respondents due to the COVID-19 pandemic. Contribution: All sorts of people will be benefited from studying this study. They will be understood how participants adopt western culture ignoring their own tradition, value system, and culture. Keywords: 1. Change 2. Control 3. Habit 4. Lifestyle 5. Smart devices
Optimal Power Allocation and Capacity Analysis for D2D-Enabled Vehicular Communications
Authors:   Research Scholor, ECE Department, University College of Engineering, JNTUK,Kakinada, Padmavathi* T , Cheepurupalli Dr. Kusma Kumari ,   Department o f Electronics and Communication Engineering, Gayatri Vidya Parishad College of Engineering(Autonomous),VisakhapatnamIndia, Madhu Dr. R. ,   Asst.Professor, University College of Engineering, JNTUK, Kakinada
Published: June 2022

Wireless Communication is important to recover transmitted information by accommodating reliable Information flow to allow safety, mobility and environmental applications. In cellular communication resources are shared with the users to improve spectral reuse and enhance channel capacity. Device-to-Device (D2D) communication has become a promising technology for wireless engineers to optimize the network performance. In vehicular environment, the design of resource allocation schemes for D2D-enabled networks need to be properly addressed because of the fast channel variations due to high mobility. In this work, Radio Resource Management (RRM) for D2D-based V2X (Vehicle to Everything) communications including both vehicle-to-infrastructure (V2I) and vehicle-to-vehicle (V2V) communication are implemented. Power is allocated based on slowly varying large-scale fading information of wireless channels of LTE standard The objective is to maximize the ergodic capacity of V2I connections by ensuring reliability for each V2V link. Sum ergodic capacity of all V2I links is first taken as the optimization goal to maximize the general V2I link throughput. Minimum ergodic capacity maximization is then taken into consideration to offer a more uniform capacity performance throughout all V2I links. Various algorithms that gives optimal power allocation are proposed and compared. Here, the capacity maximization between highway areas and urban areas are compared and concluded that capacity maximization will be higher in urban areas then on highways.
Design of Variable Fractional Delay Filter using FIR Filter Approximation
Authors:   Associate Professor Department Of ECE, Gayatri Vidya Parishad College Of Engineering (Autonomous) Visakhapatnam, AP, India., Cheepurupalli* Kusma Kumari , Babu T.Narendra ,   M.Tech VLSI Design And Embedded Systems Department Of ECE, Gayatri Vidya Parishad College Of Engineering (Autonomous) Visakhapatnam, AP, India., Siva Dadi Sita ,   Assistant Professor Department Of ECE, Gayatri Vidya Parishad College Of Engineering (Autonomous), Visakhpatnam. AP, India., Sankaracharyulu P.V.S. ,   M.Tech VLSI Design And Embedded Systems Department Of ECE, Gayatri Vidya Parishad College Of Engineering (Autonomous), Visakhapatnam AP, India.
Published: June 2022

Beamforming plays an important role in the field of wireless communication. Beamforming means combination of a radio frequency (RF) signals from multiple antennas to form a single direction beam. This technique improves the quality of communication and reduces the interference of signal. In beam forming technique, different phases signals can be achieved with different signals and the received phase delay signals are converted into same phase, multiply with weight factor and combined this signals to form a beam in desired direction. The required phase delays are generated by using a Variable fractional delay filter. Variable fractional delay filter is design by using a direct form of a FIR filter structure. Variable fractional delay filter is calculated by two different phase signals from digital antennas and those two different phase signals are converted to in- phase and added together to form a beam forming. As the order of the filter increases, the delay also increases. The filter coefficients of the variable fractional delay filter are calculated my using a Lagrange interpolation method. The variable fractional delay filter is designed by using software Xilinx version 14.3.
Fiber- vs. Microwave-based 5G Transport: a Total Cost of Ownership Analysis
Authors: Lashgari Maryam , Tonini Federico , Capacchione Massimiliano , Wosinska Lena , Rigamonti Gabriele , Monti Paolo
Published: June 2022

Answering a key question from operators, the paper compares the techno-economic performance of fiber and microwave-based 5G transport deployments using vendor's inventories and real-life field deployment scenarios. Results highlight how microwave gains vary based on the geo-types, the fiber trenching, and microwave equipment costs.