bluuebunny/crossref_metadata_2025 huggingface dataset:
Wi-Fi Radio Wave-Based Continuous Zero-Effort Two-Factor Authentication Utilizes Machine Learning
Authors: AlQahtani Ali Abdullah S. , Alshayeb Thamraa
Published: January 2023

Two-factor authentication (2FA) is a widely adopted security measure that requires users to provide an additional layer of authentication beyond a username and password in order to access protected resources. While traditional 2FA methods rely on the user to manually enter a code or token, the use of machine learning (ML) has the potential to revolutionize 2FA by enabling automatic and continuous verification of a user’s identity. In this paper, we propose a continuous zero effort 2FA system that uses ML to verify a user’s identity based on the unique characteristics of their environment, including beacon frame characteristics and RSSI values collected from Wi-Fi access points (APs). This system allows for seamless and automatic authentication without requiring any additional input or action from the user beyond their initial login. Additionally, the continuous authentication feature of the proposed system ensures that access to protected resources is maintained only when the user’s two devices are co-located. Through experiments, we demonstrate the effectiveness of the proposed system in determining the location of the user’s devices based on beacon frame characteristics and Received Signal Strength Indicator (RSSI) values. The proposed system offers a convenient and secure solution for 2FA that utilizes the power of ML to enable automatic and continuous authentication. Furthermore, its scalability, flexibility, and adjustability make it a promising option for organizations and users who need a secure and convenient authentication system. Finally, we have included three Python codes in the appendix, which provide further insights into our evaluation and analysis of the proposed system.
Comments on “BSIF: Blockchain-Based Secure, Interactive, and Fair Mobile Crowdsensing”
Authors: Wang Haiyan , Luo Fucai , Yan Xingfu
Published: January 2023

Mobile crowdsensing (MCS) is a promising sensing paradigm which allows users to outsource a range of sensing tasks to a crowd of mobile workers with mobile devices. Location-dependent MCS, as the name implies, is a geographically-dependent sensing paradigm in which service requestors outsource location-specific tasks to many workers with mobile devices, and the workers accepting the tasks collect data at a particular location by physically arriving at the desired locations. Many efforts have been devoted to protecting location privacy of the workers accepting the tasks while ensuring task allocation accuracy and efficiency. In 2022, Wang et al. proposed BSIF, a blockchain-based MCS system (published in IEEE Journal on Selected Areas in Communications (JSAC)) that can prevent not only illegitimate participants but also location privacy leakage. For the purpose of protecting location privacy, they proposed a location-based symmetric key generation algorithm, which coordinates session keys for the target ranges between the service requestor and the workers accepting the tasks without revealing the location information. However, in this paper, we will point out a flaw in their location-based symmetric key generation algorithm, which indicates that BSIF does not work. Furthermore, we propose a novel approach to achieve the location-based symmetric key generation using a witness encryption scheme. 
Political Improvement for Long-Term Repair Plans and the Execution of Maintenance Reserves for Multi-Family Housing Complexes
Authors:   Chungbuk National University, Research Institute of Human Ecology, Lee Je-Soon , Park Kyoung-Ok
Published: January 2023

Background/Objectives: Because of poor or inadequate regulations, long-term repair arrangements do not often reflect the management needs of multi-family housing complexes. This study gives political improvement suggestions for multi-family housing complex long-term repair plans that included establishment, reviews, plan coordination, and maintenance reserve accumulation and execution.
Methods: Long-term repair plan and reserve accounting documents for multi-family housing complexes from 1994 to 2021 were examined using frequency and percentage. The Multi-family Housing Management Act of South Korea includes an obligation to have long-term repair plans for the targeted multi-family housing complexes.
Results: 1) The long-term repair plan execution funds needed in 2020 were calculated by the Korean Housing Managers’ Association’s computer program and found to be 3.64 times greater than in 1994. 2) The long-term repair reserve was used in part for elevators and CCTV and fire fighting equipment repairs; however, no legal repair periods were considered. 3) The long-term repair reserve rate was highest 20 to 30 years after construction, at which time residents find the required expenses difficult to afford.
Conclusion/Implications: The case study highlighted several problems: (1) missed work types when the long-term repair plan was established; (2) insufficient repair reserve accumulation because of the Multi-family Housing Management Act regulation that states that repairs need only commence one year after construction and limits repairs to some work types to three to 20%; and (3) no unified area standard for long-term repair plans and K-APT reserves, which altered long-term plans to short-term plans and had three years of field application review and coordination.
Integrasi Metode Pembelajaran Sosiodrama dan Media Komik Bergambar dalam Pembelajaran Menulis Teks Sesorah Sesuai Unggah-Ungguh Bahasa Jawa
Authors: Handayani Sri
Published: January 2023

Dalam proses pembelajaran guru sangat berperan penting untuk menentukan keberhasilan dan efektivitas pembelajaran. Pemilihan metode pembelajaran yang tepat dan penggunaan media pembelajaran juga dapat berpengaruh positif terhadap proses pembelajaran. Penelitian ini bertujuan untuk mendeskripsikan dan menjelaskan mengenai pengintegrasian metode sosiodrama dan media komik bergambar dalam pembelajaran Sesorah sesuai unggah-ungguh bahasa Jawa. Penelitian ini berbentuk penelitian studi kasus yang dilakukan di kelas XI MPLB 3 SMKN 1Surakarta. Teknik pengamgurubilan data dengan menggunakan observasi pada saat proses pembelajaran Sesorah dan wawancara dengan narasumber, siswa. Analisis data menggunakan analisis jalinan-mengalir dan analisis interaktif dengan tahapan, pengumpulan data, reduksi data, sajian data, dan penarikan simpulan. Dari hasil penelitian dapat ditemukan bahwa penggunaan metode sosiodrama dan media komik bergambar dapat menambah keaktifan siswa. Selanjutnya, pembelajaran menjadi lebih efektif dan interaktif, semula masih berpusat pada guru, menjadi berpusat pada siswa. Pada akhirnya, hasil belajar siswa pada materi Sesorah menjadi lebih baik dari sebelumnya, karena minat belajar meningkat dan situasi pembelajarannya mengalami perubahan yang signifikan.
Peran Komitmen Profesional Antara Work Life Balance dan Kepuasan Kerja Guru Tingkat Menengah Atas
Authors: Rismayanti Febry Dwi , Nugroho Yohanes Arianto Budi
Published: January 2023

This research aims to prove whether the influence of Work life balance on Job Satisfaction mediated by Professional Commitment. The research was conducted by disseminating research tools in the form of questionnaires to some people of DKI Jakarta who have professions as teachers at the high school level by using random clustering sampling techniques. The sample in this study numbered 55 respondents. Data processing is done using the help of applications in the form of IBM SPSS software version 26.0 for Windows with Process v3.5 by Andrew F. Hayes. The results of the study have shown (1) a significant positive influence between Work life balance and Professional Commitment. (2) The same happens to the influence of Professional Commitment with Job Satisfaction. (3) There are also significant positive results between Work life balance and Job Satisfaction. (4) However, the results showed that there is no mediation role of Professional Commitment in this research model.Keywords : Work Life Balance, Professional Commitment, Job Satisfaction
Stenotrophomonas maltophilia Bacteremia: From Diagnosis to Treatment
Authors: Aysert-Yildiz Pinar , Yildiz Yesim , Habibi Hamid , Eser Sedanur , Ozgen-Top Ozge , Ozger Hasan Selcuk , Dizbay Murat
Published: January 2023

Objective: There are many difficulties in diagnosing and treating Stenotrophomonas maltophilia bacteremia. In this study, we aimed to evaluate “true” and “false-positive bacteremia” and assess mortality risk factors and the impact of different treatment regimens.

Materials and Methods: Hospitalized adult patients with S. maltophilia-positive blood cultures were assessed by a two-stage analysis. First, the clinical significance of blood cultures was assessed, and patients were divided into “true” and “false-positive bacteremia” groups. Then, excluding false positives, we analyzed the antimicrobial regimens and the factors associated with 28-day mortality in true bacteremia cases performing univariate and multivariate analyses.

Results: The study included 127 out of 138 patients with S. maltophilia bacteremia. True bacteremia was identified in 51.2% and false-positive bacteremia in 48.8% of patients. In the true bacteremia group, hypotension, nosocomial bacteremia, concomitant infections, a source of bacteremia, two positive blood culture sets, and 28-day mortality were more common. The 28-day mortality was 50.7% among true bacteremia cases. In multivariate analysis, age and solid tumor were the independent predictors of 28-day mortality. Early effective antimicrobial therapy and different antimicrobial regimens, including trimethoprim-sulfamethoxazole (SXT), fluoroquinolones (FQs), and tigecycline (TGC), did not have any significant impact on survival.

Conclusion: Patients with S. maltophilia bacteremia should first be assessed regarding clinical significance. Clinical findings, the presence of multiple positive blood culture sets and the primary sources of bacteremia are useful parameters while discriminating true from false-positive bacteremia. Patients with advanced age and solid tumors should be followed carefully in terms of mortality. Antimicrobial regimens, including SXT, FQs, or TGC, can be preferred in patients with S. maltophilia bacteremia considering antimicrobial resistance and adverse effects or toxicity.

Keywords: Stenotrophomonas maltophilia, true bacteremia, false-positive bacteremia, blood contamination, mortality, treatment
HIV Pre-Exposure Prophylaxis in Central and Eastern Europe-Gains and Challenges in An Ever-Changing World
Authors: Gokengin Deniz
Published: January 2023

Pre-exposure prophylaxis (PrEP) is an effective prevention tool for controlling the HIV epidemic. Since its approval in the United States in 2012 and Europe in 2016, it has become available on a global scale offered as a registered strategy in clinical studies or demonstration projects with a slow and steady increase. In the second quarter of 2022, PrEP became available in 78 countries globally, with around 3 million people having started using PrEP. Europe has been much slower than the rest of the world to roll out PrEP; nevertheless, currently, PrEP is nationally available and reimbursed in 21 countries; generics are available but not reimbursed in 14 countries. PrEP is not formally implemented in 20 countries, which are mostly Central and Eastern European countries. There are significant disparities between countries in terms of PrEP availability, accessibility, and usage, most likely due to social, cultural, and political differences. The major barriers to PrEP use are reported to be lack of knowledge of people in need, not being reimbursed, and low perception of HIV. PrEP uptake globally and regionally still lacks the power to have an impact on controlling the epidemic. High prioritization of PrEP targets will offer us a realistic chance of reaching the Joint United Nations Programme on HIV/AIDS (UNAIDS) goal of a 90% reduction in HIV infections by 2030 compared to 2010.

Keywords: pre-exposure prophylaxis, Central Europe, Eastern Europe, HIV infection, prevention
Evaluation of Acute Human Immunodeficiency Virus Infection Cases
Authors: Ozan-Kose Sevgi , Soyak Firuze , Cakmak-Sen Akide , Kutlu Murat , Sayın-Kutlu Selda
Published: January 2023

Objective: Acute HIV infection (AHI) is a stage with a rapid decrease in CD4+ T lymphocyte count, high viremia, and high transmissibility. Early diagnosis of AHI represents an opportunity for treatment and prevention of transmission. Therefore, we aimed to determine the clinical and laboratory findings in patients with acute HIV infection.

Methods: Patients diagnosed with AHI among newly diagnosed HIV-infected patients were evaluated in the study. AHI diagnosis was defined as an HIV RNA result of at least 10,000 copies/ml with one of the following criteria: a negative or indeterminate HIV antibody test result in a person with a reactive Ag/Ab test result or a patient with a negative Ag/Ab test result has HIV RNA detected in serum or plasma or HIV serology positivity in a patient with signs and symptoms of AHI starting 2-6 weeks after high-risk HIV exposure. In addition, the history, clinical, and laboratory findings of patients with AHI were analyzed retrospectively.

Results: One hundred six patients had a new HIV diagnosis during the study period. Of those, 12 (11.3%) were AHI. 10 (83.3%) of the patients with AHI were male, and seven were men who had sex with men. The mean age of the patients was 30 (21-50) years. Fourth-generation ELISA was negative in one patient initially; the repeated test was positive ten days later. While the 4th generation ELISA test of two patients was positive at the time of diagnosis, the confirmation test result was indeterminate. The 4th generation ELISA test was positive in nine patients with AHI symptoms starting 10-30 days after unprotected sexual intercourse. The duration of the patient’s complaints until the admission was found to be 13 (7-30) days. The most common findings were fever, diarrhea, fatigue, sore throat, lymphadenopathy, rash, nausea, and vomiting.

Conclusion: The AHI rate was 11.3% in newly diagnosed cases of HIV infection. Awareness of AHI’s signs and symptoms to initiate early diagnosis and treatment. Thus, a better HIV infection course and reduced HIV transmission can be achieved.
Prevalence of SARS-CoV-2 Variants in COVID-19 Positive Patients
Authors: Aydogan Okan , Saylan Ezgi Gozun , Guven Ozlem , Ayaz Akif , Yigitbasi Turkan
Published: January 2023

Objective: Of the existing variants, alpha (B.1.1.7), beta (B.1.351), gamma (P.1), delta (B.1.617.2), and omicron (B.1.1.529) were defined as variants of concern (VOCs) by World Health Organization. We aimed to retrospectively assess the distribution of VOCs in patients with positive COVID-19 real-time polymerase chain reaction (RT-PCR) test.

Methods: Between April 2021 and December 31, 2021, 4260 patients whose clinical samples were sent with a COVID-19 PCR test request were included in the study. Of the patients whose samples were evaluated, 2173 (51%) were male, and 2087 (49%) were female. Viral nucleic acid isolation was performed by treating nasopharyngeal swabs, bronchoalveolar lavage, and tracheal aspirate samples with viral nucleic acid buffer (vNAT).

SARS-CoV-2 variants were detected by Bio-Speedy® SARS-CoV-2 Variant Plus kit (Bioeksen AR-GE Technologies, Turkey), which targets variant-specific genome regions only found in B.1.1.7, B.1.351, and P.1 as well as ORF1ab and N gene regions. We used Bio-Speedy® SARS-CoV-2 Emerging Plus kit and CFX96 DX real-time PCR system to detect SARS-Cov-2 variants; N D3L mutation was targeted to detect the alpha variant, SL452R mutation to detect the delta variant, and S E484K mutation, which is widespread, to detect the gamma and the mu variants.

Results: SARS-CoV-2 RT-PCR was positive in 773 (18.14%) of 4260 samples, and different SARS-CoV-2 variants were detected in 316 (40.88%) of positive samples. 407 (52.65%) of the patients with real-time polymerase chain reaction (RT-PCR) positive test were women, and the mean age was 41.7 years. While no variant type was detected in 457 (59.12%) of the patients, the alpha variant was detected in 156 (20.18%) and the delta variants in 137 (17.72%) patients.

Conclusion: In our study, we found that the alpha variant was the dominant type in April, May, and June, and the delta variant became dominant as of July until the end of the year. Decreased rates of delta variants towards the end of 2021 and an increase in the other variants suggest the omicron variant, widely spread globally. Therefore, we believe that the omicron variant has been our country’s dominant type since November 2021. In conclusion, molecular surveillance studies that are planned in the light of epidemiological data and assessment of the frequency and genomic analyzes of regional and global variants are required.
Decolonialidade e farmacolonialidade
Authors: Carneiro Saulo
Published: January 2023

Resumo

O presente trabalho almeja refletir sobre a possibilidade da abertura de novas perspectivas interpretativas sobre a história da maconha no Brasil. Para tanto, amparamo-nos na influência teórica da História do Tempo Presente, na concepção da reinterpretação do passado atentando para a influência do presente e os usos políticos do passado. Conjuntamente, ambicionamos articular estas ideias com as ideias decoloniais do grupo Modernidade/Colonialidade (M/C), e também com a ideia mais recente de farmacolonialidade, apontando para as influências da racionalidade eurocêntrica na construção dos saberes sobre a maconha, seus usos e usuários no território brasileiro ao longo da história.

Palavras-chave: Decolonialidade. Farmacolonialidade. Maconha. Medicina.

 

Abstract

The present work aims to reflect on the possibility of opening new interpretative perspectives on the history of marijuana in Brazil. To this end, we draw on the theoretical influence of the History of Present Time, in the conception of reinterpretation of the past, paying attention to the influence of the present and the political uses of the past. Together, we aim to articulate these ideas with the decolonial ideas of the Modernity/Coloniality (M/C) group, and also with the more recent idea of pharmacoloniality, pointing to the influences of Eurocentric rationality in the construction of knowledge about marijuana, its uses and users in the Brazilian territory throughout history.

Keywords: Decoloniality. Pharmacoloniality. Marijuana. Medicine.
Improvement of the technology of volumetric reduction of bushings made of tin-bronze during the repair of machines
Authors:   Golinitskiy P.V. Leonov O.A. Shkaruba N.Zh.
Published: January 2023

An inverse linear relationship between the decrease in the diameter of the hole of the deformable bushing and the ratio of the working diameter of the matrix to the outer diameter of the bushing is determined. It is established that there is a direct linear relationship between the reduction in the diameters of the bushings and the difference between the outer diameter of the bushing and the working diameter of the crimping die. It is found that the thicker the wall of the crimped bushing, the greater the height of the working part of the matrix and the press force. With small interferences, a smaller working area of the matrix and the force required for compression are required. The rational parameters of the matrix are substantiated, at which the bushing is deformed only for the formation of an allowance for a single finishing treatment.
Keywords: bushing, crimping die, plastic deformation, compression ratio, degree of deformation, rational parameters of the matrix.
metr@rgau-msha.ru
PARENTAL INVOLVEMENT AND INFLUENCE IN THE DEVELOPMENT OF TALENTS FOR INDIVIDUALS WITH AUTISM SPECTRUM DISORDER. THREE MODERN CASE STUDIES
Authors: Eunice Meng Yin Tan  , Kenneth Kin-Loong Poon
Published: January 2023

Individuals with ASD who display savant skills are a paradox. How can individuals with ASD, who appear to be intellectually challenged in their general independence skills, display savant skills that are far more developed than those of individuals with higher intelligence? What is it about ASD that predisposes individuals with ASD to savant skills? This paper examines the lives of three famous individuals who have autism spectrum disorder (ASD) and possess a diverse set of well-documented savant abilities. These individuals are Kim Peek, Leslie Lemke, and Matt Savage. Apart from Matt Savage, the other two individuals who display savant skills have low cognitive abilities and are unable to perform simple daily skills. Kim Peek, for example, was unable to perform general self-care tasks, such as combing his hair or dressing.
ANALISIS PENGARUH RADIUS BENDING PADA PROSES BENDING MENGGUNAKAN PELAT SPCC-SD TERHADAP PERUBAHAN STRUKTUR MIKRO
Authors: Istianto Budhi Rahardja  , Nana Rahdiana  , Dodi Mulyadi  , Sumanto  , Abduh Al Afghani  , Anwar Ilmar Ramadhan  , Sukarman
Published: January 2023

Paper ini membahas tentang pengaruh radius bending pada kualitas hasil bending dan pengaruhnya terhadap perubahan microstructure. Proses bending merupakan salah satu proses pembentukan logam (metal forming) dengan metode pembentukan dingin. Pada proses bending salah satu hal yang harus diperhatikan adalah penggunaan radius bending dan besarnya gaya yang diberikan. Penelitian ini menggunakan metode ekperimental dengan menggunakan material baja carbon rendah SPCC-SD dengan ketebalan 1.0 mm. Spesifikasi material SPCC-SD mengacu pada JIS-3141. Peneitian dilakukan pada proses bending dengan menggunakan mesin power press berkapasitas 40 ton pada proses pembuatan omega clamp 1.5 Inchi. Pengamatan difokuskan pada zona radius bending R 0.8 mm dan R 2.5 mm. Hasil pengujian mengkonfirmasi bahwa terjadi keretakan disekitar zona bending R 0.8 mm sedangkan pada zona radius bending R 2.5 mm tidak ditemukan. Penelitian ini juga mengkonfirmasi adanya perubahan microstructure pada penggunaan radius bending R 0.8 mm. Pada penggunaan zona bending R 0.8 mm telah dikonfirmasi terjadi perubahan menjadi butiran pearlite berdiameter 3.09 -6.97 µm. Sementara pada zona bending R 2.0 hanya terjadi perubahan pergeseran pearlite ke pusat bending dan tidak sampai terbentuk butiran pearlite.

Kata kunci: Struktur micro, Pembentukan baja, Baja karbon rendah, Pearlit, Radius penekukan

 

This paper study the influence of bending radius on bending results' quality and its effect on microstructure changes. The bending process is one of the metal forming types with the cold forming process. In the bending process, one thing to consider is using a bending radius, and a total force applied. This study used an experimental method using low-carbon steel material SPCC-SD with a thickness of 1.0 mm. SPCC-SD material specifications used according to JIS-3141. The research was carried out in the bending process using a 40-ton capacity power press machine for the 1.5-inch omega clamp manufacturing process. The investigation focused on bending radius zones. It found cracks around R 0.8 mm' bending zone while the R 2.5 mm bending radius zone not observed. The investigation confirmed the changes in the microstructure in the use of a 1.0 mm bending radius. Using the R 0.8 mm bending zone, confirmed that there changed size grain to 3.09 μm-6.97 μm diameter pearlite. While in the bending zone R 2.0, there was only a change in the pearlite shift to the bending center and without changed the pearlite grain.

Keywords: Microstructure, Metal forming, Low-carbon steel, Pearlite, Bending radius
IMPLEMENTASI MATERIAL TITANIUM PADA SEPEDA LISTRIK SEBAGAI RANGKA YANG EFISIEN
Authors: Cahyo Wibowo  , Fathan Mubina Dewadi  , Abduh Al-Afgani
Published: January 2023

Titanium memiliki sifat yang baik dalam menahan korosi. Selain menahan karat, sifat titanium ini cukup lentur hingga mampu menahan benturan dari permukaan yang bergelombang sehingga jadi kenyamanan sendiri bagisi pengendara sepeda. Berbeda dengan material besi, pada material besi rentan korosi. Penelitian ini merupakan jenis penelitian kuantitatif dengan metode komparatif, penelitian komparatif bertujuan untuk membandingkan antar 2 penelitian yaitu penelitian sebelumnya dengan penelitian yang sedang dijalankan. Dari hasil penelitian yang telah dilakukan, maka didapatkan beberapa kesimpulan, antara lain material titanium memiliki massa jenis yang lebih kecil daripada material HK-40 yang digunakan pada penelitian sebelumnya, material titanium memiliki massa frame yang lebih kecil daripada material HK-40 yang digunakan pada penelitian sebelumnya, daya yang terbuang pada material titanium tidak sebesar pada material HK-40.Kata kunci: Titanium, Material, EfisienTitanium has good properties in resisting corrosion. In addition to resisting rust, this titanium sulfate is flexible enough to be able to withstand surfaces that create a ride to create its own comfort for the bike. Unlike iron material, iron material is susceptible to corrosion. This research is a type of quantitative research with a comparative method, comparative research aims to compare two previous studies with the current research. From the results of the research that has been carried out, several conclusions were obtained, including the density of titanium material which is smaller than the HK-40 material used in previous studies, titanium material has a smaller frame mass than the HK-40 material used in the study. Previously, the power wasted on titanium material was not as big as on HK-40 material.Keywords: Titanium, Material, Efficient
ANALISIS EFEKTIVITAS LIQUID SECTION HEAT EXCHANGER DENGAN TUBE IN TUBE HEAT EXCHANGER DARI SISI APLIKATIF
Authors: Fathan Mubina Dewadi
Published: January 2023

Penelitian ini menjelaskan tentang aplikasidari LSHX yang lebih baik daripada jenis heat exchanger lainnyaagar penggunaan penukar kalor tipe ini lebih efektif dan dapat diaplikasikan di beberapa sektor-sektor misal industri, penelitian dan lain sebagainya. Dalam menganalisis data penelitian yang akan dijadikan sebuah optimasi, langkah awal yaitu mengumpulkan semua vaiabel serta populasi dan sampel penelitian. Kemudian analisis variabel inti atau sampel yang akan dijadian fokus penelitian. Langkah terakhir dengan membandingkan sampel dan populasi sehingga data yang dianalisis dapat dijadikan pembanding untuk menentukan data yang lebih baik dari data penelitian sebelumnya. Nilai-nilai yang didapat setelah melakukan penelitian ini yaitu nilai Qmax sebesar 2,241 kW pada heat exchanger jenis LSHX dan 5,657 kW pada heat exchanger jenis shell and tube. Nilai selisih temperatur (∆TLMTD) sebesar 6,2 K pada heat exchanger jenis LSHX dan 11,87 K pada heat exchanger jenis shell and tube. Nilai efektivitas sebesar 87,59% pada heat exchanger jenis LSHX dan 37,35% pada heat exchanger jenis shell and tube.Kata kunci: Heat Exchanger, LSHX, Efisien.This study describes the application of LSHX which is better than other types of heat exchangers so that the use of this type of heat exchanger is more effective and can be applied in several sectors such as industry, research, and so on. In analyzing research data that will be used as an optimization, the first step is to collect all variables as well as the population and research samples. Then analyze the core variables or samples that will be the focus of the research. The last step is to compare the sample and population so that the analyzed data can be used as a comparison to determine which data is better than previous research data. The values obtained after conducting this research are the Qmax value of 2,241 kW on the LSHX type heat exchanger and 5,657 kW on the shell and tube type heat exchanger. The temperature difference value (TLMTD) is 6.2 K for the LSHX heat exchanger and 11.87 K for the shell and tube heat exchanger. The effectiveness value is 87.59% on the LSHX type heat exchanger and 37.35% on the shell and tube type heat exchanger.Keywords: Heat Exchanger, LSHX, Efficient
A Comparative Study: The Precision of CNC Machines Using a Sliding Mode Controller (SMC) and a Wi-Fi ESP32
Authors: Hermana Rifki , Fahrur Aza Muhammad , Setyoadi Yuris
Published: January 2023

Computerized numerical control (CNC) is one example of advances in automated machine technology. CNC can fulfil high precision and complex product specifications. Industrial CNC milling is still expensive regarding the hardware and software required to operate it. As a result, CNC milling machines are only used by large companies, with only a few mid-sized industries using them. It makes it impossible for medium enterprises to compete with large industries in terms of quality and output. This research aims to develop a CNC that uses an offline Wi-Fi controller based on ESP32 as an application that supports CNC machine work processes for use in small and medium enterprises. In an experiment, the precision of a CNC milling machine equipped with a sliding mode controller (SMC) controller was compared with that of a CNC machine equipped with an ESP-32 Wi-Fi controller. The CNC milling process with SMC control exceeds the tolerance limits in three dimensions based on the results of ten tests, namely length, width, and height or depth. Six values, two in each dimension of length, width, and height or depth, exceeded tolerance limits due to the CNC milling machine's ESP32 Wi-Fi control. Therefore, the CNC with SMC control is more accurate than the ESP32 Wi-Fi control because there are fewer failures with the former. This research has been carried out and provides input for the implementation of SMC, which can be considered in the CNC milling process.
An Energy Evaluation in a Vapor Compression Refrigeration System Utilizing R32 Refrigerant
Authors: Hasanudin Hasanudin , Duta Suhendar Ananda , Abdulah Amri , Lintang Azizah Renata , Khoirudin  , Karyadi  , Murtalim  , Al Afgani Abduh
Published: January 2023

This article reports the results of a study into the efficiency of refrigeration systems. The efficiency of the refrigerant-based cooling system is a significant issue due to its connection to global warming. Vapour compression refrigeration (VCR) systems utilise the inverted Rankine cycle to provide cooling process. Existing systems are evaluated and controlled, and their efficacy is either maintained or improved. A VCR device explores evaporator load variations at five different rpm levels as test equipment for measuring the performance coefficient of R32 refrigerant. A 365-watt compressor drives the VCR system. R32 is a more eco-friendly alternative to R22 as a refrigerant. Interpolation and extrapolation were utilized and adapted to convert the system's experimental enthalpy value to total performance. Genetron was chosen to evaluate enthalpy alongside other factors, such as VCR performance. Genetron properties was used to double-check the experiment's findings. The highest CoP was found and evaluated at a speed of 400 rpm (1st level) with the result about 3.17. The lowest value for CoP was found and achieved at the maximum attainable rpm, which was 2.53. The association between CoP and fan speed is inversely proportional during evaporator loading. Genetron properties software validation results produced an average CoP value of less than 10% compared to experimental data. In addition, this work significantly contributes to the study of VCR performance through the development of test devices for the provided VCR system
GOVERNMENT MANAGEMENT PRACTICES AND FRACTAL METHODOLOGY
Authors:   Vladimir State University named after A.G. and N.G. Stoletovs, Vladimir, Russia, Savelev Igor I. , Potapova Elena P. ,   Vladimir Branch of the RANEPA, Pozdnyakova Polina A. ,   Vladimir Branch of the RANEPA
Published: January 2023

The socio-economic environment that changed at the beginning of 2022 and the unprecedented speed of transformation to restraint and new complexity became the challenge to the status quo of professional competencies of civil servants, who need for a real managerial breakthrough, to strengthen anti-fragility in confronting the deteriorating conditions of the implementation of management practice to destroy this status quo in order to repeatedly improve the systematic approach to management in conditions of chaos.
ANALYSIS OF TRENDS ON A POSSIBLE REDUCTION IN THE NUMBER OF INSURERS IN RUSSIA
Authors:   St. Petersburg State University of Aerospace Instrumentation, St. Petersburg, Russia, Makarenko Evgeny A. ,   St. Petersburg Polytechnic University of Peter the Great, St. Petersburg, Russia, Tcerkasevich Larisa V. ,   St. Petersburg Institute of Economics, St. Petersburg, Russia, Samorukov Vyacheslav I. ,   Saint Petersburg State Agrarian University, Saint Petersburg, Russia
Published: January 2023

The article considers the current situation related to the size of the authorized capital of insurers in the Russian market, and made a forecast about the further dynamics of the decrease in the number of operating insurers and reinsurers in the market. The situation for compliance with the license was analyzed in the context of the new requirements of the Central Bank of the Russian Federation for classical insurers, life insurers and reinsurers. Assumptions are made about the probability of withdrawal or additional capitalization of a number of insurers, depending on belonging to holdings or financial and industrial groups. An analysis is made of the use of the size of the authorized capital in the criterial assessments of the financial component of the contractor in the implementation of competitive purchases within the framework of the Federal Law of the Russian Federation. A proposal was made to change the approach to the historically established system of assessments.
CURRENT TRENDS IN THE DEVELOPMENT OF INSURANCE RUSSIAN MARKET
Authors:   Dagestan State University, Makhachkala, Russia, Filina Marina A.
Published: January 2023

The article is devoted to the study of the problems of the insurance market of the Russian Federation in the context of modern challenges. The key indicators of the insurance market of Russia are investigated: the total premium, the amount of insurance payments, the number of insurance companies, etc. Statistical methods of data processing and comparative analysis were used in the preparation of the article. The conclusion is made about the features of the industry structure of the insurance services market, the main trends and the immediate prospects of its development. Special attention is paid to measures to support the insurance business by the megaregulator in the face of current challenges.
THEATER ACTIVITY APPLICATION AS SUCCESS IN SPEECH FORMATION IN YOUNGER SCHOOLCHILDREN WITH COMBINED SPEECH DISORDERS
Authors:   Vladimir State University named after A.G. and N.G. Stoletovs, Vladimir, Russia, Usenkova Ekaterina V.
Published: January 2023

The article includes an analysis of the concept and meaning of coherent monological speech of younger schoolchildren, the problems of coherent speech disorders in schoolchildren with combined speech disorders, as well as the conditions for the effective inclusion of theatrical activities in the process of correction of coherent speech of elementary school children. The theatrical activities in correctional speech therapy classes has a positive impact on the comprehensive development of the personality of younger schoolchildren with combined speech disorders, namely, contributes to the increase of mental and speech activity, motivation for communication.
PROBLEMS OF STATE POLICY IN THE FIELD OF UNEMPLOYMENT REGULATION IN RUSSIA
Authors:   Russian State Social University, Moscow, Russia, Parasotskaya Nataliya N. , Lutovinova Nataliya V. ,   Russian State Social University, Moscow, Russia, Ilyin Viktor A. ,   College of the Russian State Social University, Moscow, Russia, Chizhikova Vera V. ,   College of the Russian State Social University, Moscow, Russia
Published: January 2023

This article analyzes the impact of the COVID-19 pandemic on the global economy and labor market, as well as on the Russian Federation. The main problem is the impact of the crisis on the structure of the economy, as well as the demand for labor in the context of types of employment and professional qualification groups of workers.
WAYS TO INCREASE THE EFFICIENCY OF AGRICULTURAL LAND USE AS PART OF THE FIXED CAPITAL OF AGRIBUSINESS ENTERPRISES
Authors:   Azov-Black Sea Engineering Institute, Don State Agrarian University, Zernograd, Russia, Butkova Oksana V.
Published: January 2023

The place of the enterprise in agricultural production, its financial condition, and competitiveness in the market depend on the increase in the efficiency of the use of land resources by the organization of the agroindustrial complex (AIC). Nevertheless, the scientific literature does not pay enough attention to the problem of increasing the efficiency of agricultural land use. The study identified the components of the fixed capital of agricultural enterprises, the structure of natural capital, the place of land resources as part of the fixed and natural capital of agricultural formations; factors affecting the efficiency of agricultural land use of agricultural enterprises in the south of the Rostov region. Factor analysis, analogy, synthesis, observation, modeling, concretization, abstraction, classification, grouping, abstract-logical, economic-statistical research methods are used to solve the problems. The main problems of effective use of agricultural lands of agricultural enterprises in the south of the Rostov region are the refusal to use scientifically based crop rotations, violation of the timing of agrotechnical measures, the use of traditional methods of tillage and seed material of outdated breeding. Appropriate measures have been developed and proposed to eliminate the identified problems. Their reasonable combination will improve the financial condition of agro-industrial enterprises and create conditions for sustainable development of rural areas.
IMPLEMENTATION OF THE INVENTORY MANAGEMENT MECHANISM AS A TOOL TO IMPROVE THE EFFICIENCY OF THE ENTERPRISE
Authors:   State University of Management, Moscow, Russia, Fedorov Аleksey V.
Published: January 2023

The article discusses the issues of organization and implementation of a management mechanism for one of the key assets of the enterprise – stocks. Their role in the work of enterprises is quite large, so the development of an inventory management strategy is an urgent task. The inefficiency of such management results in significant losses and resource constraints. Without the use of a strategic comprehensively developed mechanism for organizing work, it is impossible to find a compromise solution that will allow management to achieve efficiency in enterprise management. The lack of methodical inventory management and errors in determining the necessary volumes of raw materials for the production and maintenance of production facilities lead to interruptions in work, disruption of the sales schedule, which significantly affects the financial results of the enterprise. The solution to the problem, according to the author, should be sought in the development of a strategy for regulating funds and the introduction of a stock management mechanism. The implementation of the developed methodology will allow to ensure a balance in the formation of reserves and the achievement of the planned results.
IMPLEMENTATION AND DEVELOPMENT OF AN ENERGY MANAGEMENT SYSTEM IN ORDER TO IMPROVE THE ENERGY EFFICIENCY OF ENTERPRISES OF THE FUEL AND ENERGY COMPLEX
Authors:   Moscow university named after A. S. Griboyedov, Murugov Il’ya K.
Published: January 2023

In this paper, on the example of one of the territorial network organizations of the city of Moscow, the issue of introducing and developing an energy management system for enterprises of the fuel and energy complex is considered. The energy management system includes technical and organizational measures aimed at reducing the volume of irrational consumption of fuel and energy resources, reducing energy losses and increasing the energy efficiency of the object of study. By analyzing the quality of the provided power supply services, assessing the accident rate of equipment and calculating the losses of electricity in it, the quantitative level of saving fuel and energy resources as a result of the implementation of recommended energy-saving measures was determined. Various methods have been proposed to improve the energy efficiency of enterprises of the fuel and energy complex, which are the most effective, provided that the company's employees are involved in the work within the framework of the energy management system.
THE SYSTEM OF INDICATORS OF EFFICIENCY IN A COMPREHENSIVE ECONOMIC ANALYSIS OF THE ACTIVITIES OF A COMMERCIAL ORGANIZATION
Authors:   Academy of Social Management, Moscow, Russia, Dadashev Alikhan Z.
Published: January 2023

The article considers the indicators that characterize the effectiveness of resource management of a commercial organization. The system of indicators, within the framework of which the indicators characterizing the efficiency of production activity, efficiency of investment and financial activity are selected, is offered. To analyze and assess the effectiveness of resource management of the enterprise as a whole, along with the profitability of assets offered an indicator of human capital efficiency. The corresponding calculations are made on the basis of the accounting (financial) statements of the Tver Carriage Works for 2018–2020.
ORGANIZATIONAL AND METHODOLOGICAL APPROACHES TO THE ECONOMIC ANALYSIS OF THE ACTIVITIES OF FINANCIAL AND CREDIT ORGANIZATIONS
Authors:   Belgorod State National Research University, Belgorod, Russia, Kalutskaya Natalia A. , Kovalenko Yulia N. ,   Plekhanov Russian University of Economics, Moscow, Russia, Kovalenko Svetlana N. ,   Plekhanov Russian University of Economics, Moscow, Russia
Published: January 2023

The article presents the main components of economic analysis, presents a study of the relationship between managerial and financial analysis of the banking sector of the economy, as well as the study of these terms. Despite the individual nature of the indicators of each economic entity, including financial and credit organizations, studies of these coefficients are reflected in the general economic system. Therefore, it is important to show the relationship between several approaches to analysis in order to improve the business environment of a financial and credit organization. The synthesis method is used when combining analytical approaches to identify their connection with improving the efficiency of banks. At the same time, an understanding of the sequence of work characteristic of financial analysis and the preparation of a specific strategy in terms of economic development for banks has been formed. Some shortcomings have been identified that complicate the accounting of a financial and credit organization and the analysis of activities in general. The types of internal management analysis are determined, the signs of financial and management analysis of a financial and credit organization are formed, similarities and differences, their interrelation are established.
MANAJEMEN PERAN SERTA MASYARAKAT DALAM PENGEMBANGAN SEKOLAH
Authors: Suharto Nugraha , Sofyan Edy
Published: January 2023

Kepmendiknas No. 044/U/2002, the government provides a forum for the community to participate and channel their aspirations in supporting education through the Board of Education at the district level and the School Committee in each education unit or group of education units (schools). With the existence of the Education Council and school committee, the level of concern and participation of the community in helping the government realize quality education is expected to be better and increase to realize community-based education. Implementation of Kepmendiknas No. 044 / U / 2002 there are several problems that need to be resolved immediately, including: (1) Not all communities and  education stakeholders in the regions understand Kepmendiknas No. 044 / U / 2002 concerning Education Councils and School Committees; (2) Not all districts and schools have implemented Kepmendiknas No. 044/U/2002 as appropriate; (3) There are still many people who do not understand the School Committee, and consider the School Committee to be the same as the Education Organizing Auxiliary Board (BP3); and (4) The impact of the Board of Education and the School Committee has not had much effect on improving the quality of educational services and learning outcomes. With the decentralization model of education, schools as educational units that have been a very passively empowered need to be encouraged to become strong, independent, professional institutions in providing optimal services to students and the community. This is the core of school-based management (SBM) which is applied especially in primary and secondary education in the country. One of the most important elements in this management is the role of society represented through boards of education and school committees.
The Effect of Social Media Marketing and Electronic Word of Mouth on the Instagram Platform on Purchase Decisions at Tokopedia
Authors: Dara Nursimah , Kusumawati Indah , Mayratih Siska
Published: January 2023

The purpose of this study was to determine the effect of social media marketing and electronic word of mouth on purchasing decisions at Tokopedia, either partially or simultaneously at Tokopedia. This study uses the associative method with a quantitative approach. Sampling of 96 people. Techniques and tools of data collection is a questionnaire or questionnaire. Descriptive data analysis technique was used to describe the description of respondents' responses and data distribution, while inferential statistical analysis was used to test hypotheses. The data processing is assisted by Microsoft Excel and SPSS software version 25. Based on the correlation test of social media marketing (X1), and electronic word of mouth (X2) with purchasing decisions (Y) have a strong relationship. Social Media Marketing and Electronic Word of Mouth can project Purchase Decisions with a positive influence, this can be seen from the equation Y = 4,513+0,421X1 1+0,447X21 + e which means that the higher the application of social media marketing and electronic word of mouth, the higher or higher the purchase decision. Social media marketing and electronic word of mouth have a contribution of 61,10% while the remaining 38.90% is influenced by other variables classified in epsilon, namely other factors that influence purchasing decisions but are not examined in this study
Aspectos educativos para la prevención y tratamiento del pie diabético
Authors: Solórzano Segovia Jorge , Segovia Medina María , Delgado Armijos Maryuri , Santana Bermello Andreina Isabel
Published: January 2023

Determinar los aspectos educativos que inciden en la prevención y tratamiento del pie diabético. Se llevó a efecto un estudio observacional y transversal de tipo descriptivo, a 30 pacientes entre 30 y 60 años de edad, con base a datos obtenidos en el centro médico JS SALUD del cantón Montecristi, Manabí, Ecuador, desde julio a diciembre de 2021. Basándose en las variables género, ocupación laboral, área financiera, factores educativos, factores de riesgo, tipo de tratamiento, antecedentes patológicos personales. Con base a los datos tabulados, los aspectos educativos predominan, nivel de estudios, ingresos económicos, ocupación laboral. En cuanto a la prevención y tratamiento del pie diabético imperó antecedentes patológicos, tipo de tratamiento, cumplimiento para su efectividad, factores de riesgo y se presentó en mayor porcentaje en hombres. El pie diabético es la mayor complicación de la diabetes, que pasa por complicaciones microvasculares y macrovasculares que sigue creciendo en pacientes con síndrome de pie diabético de la población estudiada. Los aspectos educativos son relevantes, dado que, a mayor nivel de educación, las probabilidades de tener una vida saludable, preventiva para el pie diabético es más alta, debido a que adquieren conocimiento sobre su enfermedad, posibles complicaciones, prevención, tratamientos y esto les permite adquirir una cultura de cuidados y atenciones que elevan su calidad de vida.