bluuebunny/crossref_metadata_2025 huggingface dataset:
Invitación a Eventos con Motivo del Cuarto Centenario de la Facultad de Derecho
Authors: (UNAM) Facultad De Derecho
Published: October 2023

La Facultad de Derecho de la Universidad Nacional Autónoma de México, tiene el honor de invitar a usted(es) a las conferencias que sustenta el Doctor Luís Recaséns Siches, los días 11, 16, y 18 de junio, a las 19.30 bs., en el aula * Jacinto Pallares” de esta Facultad, sobre el tema: COMPARACION ENTRE EL PENSAMIENTO JURIDICO DE LOS ESTADOS UNIDOS Y LA TILOSOTIA DEL DERECHO EUROPEO - HISPANOAMERICANO, con motivo del Cuarto Centenario de la propia Facultad.
An Overview of Emerging Global Trends in Higher Education
Authors: Bakshi Brig Rohit
Published: October 2023

Abstract: Development in modern society imposes a need for changes in the higher educational system. The key actors in production of knowledge, promoting social, technological and pedagogical research are Universities and higher education institutions. The primary goals of higher education institutions are to improve the quality of learning and teaching through the use of new technology. Access to the internet and easy mobility across the countries has resulted in more penetration in the country. Technology and Artificial Intelligence has helped higher education institutions in shifting gears to more accessible form of student and teacher assessment encompassing student-teachers specific feedback, evaluation, proctored online examinations and much more. Higher education institutions have adapted to more experiential learning methodology The continuing revolution in the global trends in higher education is intensifying. However, issues like quality, access and internationalisation have predominated the higher education system for some time. The 21st century is emerging as a knowledge economy. The workforce segments require advanced education and efficient research skills. The purpose of the higher education system is to prepare students with new skills, broader knowledge base and competency to be a part of a more complex world
What is the influence of BOSQU as a learning medium?
Authors: Bausir Umar , Rahmasari Elfrida
Published: October 2023

The use of learning media according to the conditions and needs of students has an influence on learning motivation and mastery of students' mathematical concepts, so teachers need to know the media criteria that must be used so that students can be liked and accepted. Quizizz is one of the learning media in the form of quizzes and is based on 4.0. Teachers can choose Quizizz as a learning media based on games and technology. This study aimed to describe the effect of using Quizizz media on junior high school students learning motivation and mastery of mathematical concepts. This research is pre-experimental quantitative research, namely one group pre-test – post-test design (before and after). The number of samples in this study was 28 students, consisting of one class. The instruments used were questionnaires and test sheets. Data collection techniques were carried out in the form of questionnaires and tests. Based on the results of the research data analysis, it was found that the value of Sig. (2-tailed) learning motivation is 0.000 <0.05. So it can be concluded that there is an influence of Quizizz learning media on student learning motivation. Furthermore, it was found that the value of Sig. (2-tailed) mastery of mathematical concepts is 0.000 <0.05. So it can be concluded that there is an influence of Quizizz learning media on students' mastery of mathematical concepts. 05. So, it can be concluded that there is an influence of Quizizz learning media on student learning motivation. Furthermore, it was found that the value of Sig. (2-tailed) mastery of mathematical concepts is 0.000 <0.05. So it can be concluded that there is an influence of Quizizz learning media on students' mastery of mathematical concepts. 05. So, it can be concluded that there is an influence of Quizizz learning media on student learning motivation. Furthermore, it was found that the value of Sig. (2-tailed) mastery of mathematical concepts is 0.000 <0.05. So it can be concluded that there is an influence of Quizizz learning media on students' mastery of mathematical concepts
Foreign direct investment and international trade across the former Soviet economies: What do we know after 30 years of research?
Authors:   Department of Macroeconomics and International Trade Theory, Faculty of Economic Sciences, University of Warsaw, Poland, Gurshev Oleg
Published: October 2023

Aim/purpose – This paper surveys three decades of empirical literature on foreign direct investment (FDI) and international trade across the former Soviet economic space. In this survey, we outline the current state of research, discuss data limitations, and iden- tify topics for further studies. Design/methodology/approach – The methodology used in this study is a systematic literature review. Multiple databases were searched, including Google Scholar, IDEAS (RePEc), JSTOR, Web of Science, and others. In total, 59 papers published between 1990 and 2023 were analyzed. Findings – Our findings are severalfold. First, we highlight severe data collection prob- lems related to foreign equity and trade outside the Baltics, Ukraine, Russia, and some Central Asian Republics (CARs). As a result, we point out the limited availability of studies that use contemporary data and cover important economic events, such as the European accession of the Baltics, the formation of new preferential trade agreements, and economic re-integration centered around Russia, and Ukraine’s political stability. Research implications/limitations – This study should assist researchers in identifying prospective research directions in post-communist economic research. The main limita- tions of this survey are i) the total number of papers surveyed (59), ii) the focus on em- pirical studies, and iii) the specific geographical area considered. Originality/value/contribution – Despite the critical role of FDI and trade in transition- al economies, plenty of relevant topics have remained undiscovered (e.g., the relation- ship between outward FDI and profit shifting). To the best of our knowledge, no system- atic survey has been done on these two areas of research. Keywords: Foreign direct investment, international trade. JEL Classification: F13, F15, F23, P33.
Attitudes and behaviors of individuals aged 90 and over towards rational use of drugs: cross-sectional research
Authors: KARAKAŞ Neşe , DENİZ Serdar , BENTLİ Recep
Published: October 2023

Introduction: The current study was aimed to evaluate the attitudes and behaviors of individuals 90 years and older living in Malatya regarding rational drug use.
Methods: This cross-sectional, descriptive study was carried out with people aged 90 and over (n=1022) living in Malatya province and its districts. Face-to-face interview method was used to collect study data. In the first part of the form used for data collection, the descriptive characteristics of the participants were questioned, and in the second part, the attitudes and behaviors towards rational drug use were examined. Rational drug use features are evaluated by World Health Organization (WHO) prescribing indicators.
Results: The frequency of rational drug use was 84.1%, and the rate of over-the-counter drug use was 19.2% among individuals 90 years and older. 52.3% of the participants had over-the-counter medication at home for use, when necessary, without doctor's recommendation. The most commonly available over-the-counter group of drugs at home were painkillers.
Conclusion: The frequency of rational drug use in individuals aged 90 and older has been determined higher than in the literature on individuals aged 65 and older. Education, guidance and counseling programs can be created to increase rational drug use within elderly people communities.
Keywords: rational drug use; oldest-old; elderly; attitude; behavior
Curbing Promiscuous Sex through the Practice of Fasting: An Islamic Approach
Authors: Mansor Nurul Husna , Abdullah Raihanah , Mohamad Nor Azmawaty Mohamad Nor , Mohammad Jodi Khairul Hamimah Mohammad Jodi
Published: October 2023

Promiscuous sex is a social issue that is now rampant and has implications on society that includes an alarming increase in premarital sex among adolescence, the increase in numbers of children out-of-wedlock, rising infidelity cases and divorce rates. To curb the problem of promiscuous sex, Islamic law has recognized the practice of fasting as a practical approach to control sexual desire and fornication. This paper intends to evaluate how the philosophy and practice of fasting in Islam help curb promiscuous sexual behavior. This study employs a qualitative research design using interviews, a content analysis approach that examined various materials sourced from primary and secondary data related to the topic under study. The documents encompass Holy al-Qur’an, al-Hadith, theses, books, and academic journal articles focusing on topics of fasting practice to curb promiscuous sex. Data gathered were grouped into codes, categories, and themes. Fasting is not just about suppressing hunger and thirst but includes restraining the self from doing things that are forbidden in Islam. Interestingly, the practice of fasting in Islam helped shaped human sexual behavior through the formation of spiritual, physiological and psychological aspects. The findings can be utilized by stakeholders especially in formulating rehabilitation modules for cases of promiscuous sex.
The Popularizing of Sunni Doctrine in Southeast Asia: Sifat Dua Puluh in Malay Kitab Jawi in the 19th Century
Authors: Burhanudin Jajat
Published: October 2023

Sifat Dua Puluh (twenty attributes of God) is a specific term of Malay to convey the doctrine of the Sunni school in Southeast Asia. Adapted from a renowned book of Yusuf al-Sanusi, Umm al-Barāhīn, this term began to appear in the 19th century as a leading Islamic theme in the kitab Jawi of Malay scholars in Mecca (Jawa). The scholars translated the book into Malay and expounded its contents in the form of commentaries (sharḥ), a rising style of writing kitab Jawi on the doctrine of the period. This article is to present a historical analysis of the way Sifat Dua Puluh became an established concept of Sunni theology in the Southeast Asian context, which served to convey the Sunni creeds in a popularly vernacular expression of the Muslims in the region. Sifat Dua Puluh was taken as the Islamic subject transmitted of the period, alongside the reprinting of kitab Jawi to disseminate the concept to Southeast Asia.
Variable species establishment in response to microhabitat indicates different likelihoods of climate-driven range shifts
Authors: Chardon Nathalie , McBurnie Lauren , Goodwin Katie , Pradhan Kavya , Lambers Janneke Hille Ris , Angert Amy L.
Published: October 2023

Climate change is causing geographic range shifts globally, and
understanding the factors that influence species’ range expansions is
crucial for predicting future changes in biodiversity. A common, yet
untested, assumption in forecasting approaches is that species will
shift beyond current range edges into new habitats as they become
macroclimatically suitable, even though microhabitat variability could
have overriding effects on local population dynamics. We aim to better
understand the role of microhabitat in range shifts through its impacts
on establishment by i) examining microhabitat variability along large
macroclimatic gradients, ii) testing which of these microhabitat
variables explain plant recruitment and seedling survival, and iii)
predicting microhabitat suitability beyond species range limits. We
transplanted seeds of 25 common tree, shrub, forb, and graminoid species
across and beyond their current elevational ranges in the Washington
Cascade Range, USA, along a large elevational gradient spanning a broad
range of macroclimates. Over five years, we recorded recruitment,
survival, and microhabitat characteristics rarely measured in
biogeographic studies. We asked whether microhabitat variables correlate
with elevation, which variables drive species establishment, and whether
microhabitat variables important for establishment are already suitable
beyond leading range limits. We found that only 30% of microhabitat
parameters covaried in the expected way with elevation. We further
observed extremely low recruitment and moderate seedling survival in our
study system, and these were generally only weakly explained by
microhabitat. Moreover, species and life stages responded in contrasting
ways to soil biota, soil moisture, temperature, and snow duration.
Microhabitat suitability predictions suggest that distribution shifts
are likely to be species-specific, as different species have different
suitabilities, and availabilities, of microhabitat beyond their present
ranges, thus calling into question large-scale macroclimatic projections
that will miss such complexities. We encourage further research on
species responses to microhabitat and the inclusion of microhabitat in
range shift forecasts.
Programmed Death-Ligand 1 (PD-L1) Expression in Patients with Primary or Secondary Myelofibrosis
Authors: Socola Francisco , Ibrahim Moayed , Murphree Catherine , Patel Kirtesh , Mastrodomenico Matthew , Saba Nakhle S. , Safah Hana , Schmid Janet
Published: October 2023

It has been described in mice models that Primary Myelofibrosis (PMF)
with JAK2-V617F mutation has an increased expression of programmed
death-ligand 1 (PD-L1) in megakaryocytes leading to cancer immune
evasion by inhibiting the T-lymphocytes. To prove this hypothesis, we
quantified PD-L1 expression on 29 bone marrow (BM) biopsies. We created
a scoring system to quantify PD-L1 expression in megakaryocytes. We
obtained 14 BM with JAK2 positive PMF, 5 JAK2 negative PMF and 10
patients with normal BM biopsies. PD-L1 expression was higher in the
JAK2 positive group compared to the control group with a score of 212.6
vs 121.1 (t-value 2.05,p-value 0.025). In addition, the score was higher
in the PMF group regardless of JAK2 mutational status when compared to
the control group with score of 205.9 vs 121.1(t-value 2.12,p-value
0.021). There was no difference in the PD-L1 score between the JAK2
negative vs the control group 187.2 vs 121.1 (t-value 1.02,p-value
0.162). These findings suggest that PMF patients with a JAK2 mutation
have a higher PD-L1 expression in megakaryocytes compared to the control
group. We postulate that the combination of checkpoint and JAK2
inhibitors may be an active treatment option in JAK2 mutated PMF given
the higher PD-L1 expression.
Performance Evaluation Of Cloud Based Elliptic Curve Cryptographic Digital Signature E-Voting System For The Conduct Of Election In Nigeria
Authors:   Department of Computer Science Adekunle Ajasin University Akungba-Akoko, Ondo State, Nigeria., Akingbesote A.O , Babatobi F.J. , Akinwumi D. A.
Published: October 2023

ABSTRACT Elections in Nigeria are characterized with poor voters’ turnout. One of the reasons attributed to this is the insecurity of the votes of the electorates. To resolve this, scholars have adopted various mechanisms and technologies, for example, the use of Rivest-Shamir-Adleman (RSA), Advanced Encryption StandardAES) and Elliptic Curves Cryptography (ECC). While these have added value to the body of knowledge in the conduct of elections in Nigeria, However, literature reveals that issue of insecurity of votes of electorate is still a current debate. The reason attributed to this, is due to the poor performance in terms of their key size, key strength and encryption time. This is addressed by using a Cloud based Elliptic Curve Cryptographic Digital signature (ECCDS) E-Voting system. The concept of the proposed system is to automatically encrypts, signs, decrypts votes and verifies the signed votes. The system is built on a hybridized security algorithms, these are; The ECC and Digital Signature Algorithm. This has a smart contractor that protect electorate votes against integrity modification in the cloud environment. The prototype demonstration is conducted during the students’ union election in Adekunle Ajasin University where the University ICT department is used as the cloud based network Infrastructure center. Three evaluation metrics are used. These are the key size, key strength and encryption time. The evaluation metrics shows a better performance of RSA, AES and ECC systems over the ECCD when considering the encryption time. The ECC and AES also perform better using the key size. For example, we recorded 167 bits for ECCDS, while RSA, AES and ECC algorithms recorded 163, 1024 and 64 bits respectively from one of the experiments under the key size. However, the beauty and the strength of good security system is the decryption time which is the key strength. From the experiment conducted using Key strength as the metric, we observed that ECCDS key strength is higher than that of AES, ECC and RSA. It means that it will take longer time for any intruder to decrypt the system when using the ECCDS model. This satisfy both the electorates and Electoral commission request and is very reliable and produces effective results. Keywords: E-voting, Integrity, Elliptic Curve, Cryptography, Digital Signature. CISDI Journal Reference Format Akingbesote. A.O., Babatobi, F.J. & Akinwumi, D. A. (2023): Performance Evaluation Of Cloud Based Elliptic Curve Cryptographic Digital Signature E-Voting System For The Conduct Of Election In Nigeria. Computing, Information Systems, Development Informatics &Allied Research Journal. Vol 13No 2, Pp 1-.14. Availableonlineathttps://www.isteams.net/cisdijournal. dx.doi.org/10.22624/AIMS/CISDI/V14N3P1
Design of a Distributive Robotic Vehicle Controller for Nigeria Toll Gate
Authors:   Department of Computer Science Adekunle Ajasin University Akungba-Akoko, Ondo State, Nigeria., Akingbesote A. O. , Akinwumi D. A. , Akingbesote B. O.
Published: October 2023

Nigeria toll gate was established in 1978 with the objectives of generating income to the Federal Government for the maintenance of the roads and also create employment for Nigerians. However, the tolls were demolished by President Obasanjo’s government on the first of January 2004 at a cost of about #200 to #400 million naira. Among the reasons given were the issue of corruption, traffic congestion and keeping vehicles waiting for long. In 2012, the Buhari led administration re-lunched the toll gates with similar objectives. While the issue of corruption is still on the high side, that of waiting time of vehicle is also a great challenge. This research addresses the waiting time issue by proposing a Distributive Robotic Vehicle Controller (DRVC) for Nigeria toll gate. This DRVC uses counter to count the incoming vehicles on each service lane to know the length of queue of the vehicles. If the length of the queue in any of the lanes reaches the given threshold, then control switches to the lane with smallest queue length. Two approaches were used to demonstrate the proof of concept of the designed system. The first is the mathematical model and the second is the prototype demonstration on the first, we use the Non Preemptive Queuing M/M/c queuing model and on the second a discrete event simulator known as Arena software is used. Evaluation of this work is carried out with the current un-controlled existing system based on waiting time and waiting costs. The result reveal that the proposed DRVC had a better and high waiting time gain difference compared to the un-controlled system Also, we recorded lower waiting costs compared to the conventional un-controlled system. However, at the peak, they almost have the same performance, this is attributed to the fact the threshold of all the lane are reached and more vehicles have to wait. This model is hope to play a significant role in traffic control in our various toll gate in Nigeria Keywords: Robot, vehicle, arrival time, queue length, waiting time
Application of the fink identity to Jensen-type inequalities for higher order convex functions
Authors: Bosnjak Marija , Krnic Mario , Pecaric Josip
Published: October 2023

The focus of this paper is the application of the Fink identity in obtaining Jensen-type inequalities for higher order convex functions. In addition to the basic form, we establish superadditivity and monotonicity relations that correspond to the Jensen inequality in this setting. We also obtain the corresponding Lah-Ribaric inequality. The obtained results are valid for functions of even degree of convexity. With this method, we derive some new bounds for the differences of power means, as well as some new H?lder-type inequalities.
Series expansions for powers of sinc function and closed-form expressions for specific partial bell polynomials
Authors: Qi Feng , Taylor Peter
Published: October 2023

In the paper, with the aid of the Fa? di Bruno formula, in terms of the central factorial numbers and the Stirling numbers of the second kinds, the authors derive several series expansions for any positive integer powers of the sinc and sinhc functions, discover several closed-form expressions for partial Bell polynomials of all derivatives of the sinc function, establish several series expansions for any real powers of the sinc and sinhc functions, and present several identities for central factorial numbers of the second kind and for the Stirling numbers of the second kind.
Expanding Diabetes Specialty Care in a Community Primary Care Practice Center
Authors: Gunasekaran Uma
Published: October 2023

  

Parkland Health is the safety-net health system of Dallas County, TX, serving the indigent and underserved individuals of the county. The Diabetes Specialty Clinic is located on the main campus of Parkland Health adjacent to the main hospital. Primary care is provided to residents at community-oriented primary care clinics (COPCs), which are located in underserved areas throughout Dallas County.
Análisis de las cuentas por cobrar y su incidencia en la rentabilidad de la empresa SERIMTEC S.A., de la ciudad de Guayaquil, año 2022
Authors:   Instituto Superior Tecnológico Vicente Rocafuerte, Guarderas Alvarado Madeleyne Michelle , Concha Ramírez Jhonny ,   Instituto Superior Tecnológico Vicente Rocafuerte
Published: October 2023

El presente estudio se centre en analizar como la gestión de las cuentas por cobrar puede afectar la rentabilidad de la empresa SERIMTEC S.A., entidad dedicada a distribuidor de productos de Información Tecnológica, lo que incluye: Equipos de computación Servidores PCs y Portátiles, componentes, periféricos, accesorios, productos para redes y equipos electrónicos, especializado en la importación rápida de productos para reparación de portátiles, como: pantallas, inversores, baterías, adaptadores de corriente, discos duros, memorias Y partes para Servidores, Impresoras y Plotters en la ciudad de Guayaquil, debido al tipo de actividad que maneja gestiona como modalidad de pago la concepción de créditos a clientes, haciendo que sea indispensable contar con herramientas que le permitan una adecuada administración de su cartera. Los problemas dentro de la entidad se denotan de falta de mecanismos para la recuperación de la cartera de créditos que podrían afectar el rendimiento de liquidez del negocio, por lo cual, surgen la presente investigación para profundizar como se administran estos recursos y la influencia que tendrían dentro de la fase financiera del negocio al visualizar su representación en los estados financieros. Como parte metodológica para describir el tipo de investigación, el enfoque y los instrumentos de recolección de datos a utilizar. Posteriormente, se presenta un análisis de resultado y el desarrollo de la propuesta del estudio. Como último punto, con la información conseguida se procede con el desarrollo de las conclusiones y recomendaciones
Análisis de un manual de control interno de inventarios (NIC 2) en Mipymes de la ciudad de Guayaquil, año 2022
Authors:   Instituto Superior Tecnológico Vicente Rocafuerte, Martínez Cabeza Scarlet Dayana , Sánchez Quinde Maira ,   Instituto Superior Tecnológico Vicente Rocafuerte
Published: October 2023

En el presente trabajo el análisis de un manual de control interno de inventarios (NIC 2) en MiPymes de la ciudad de Guayaquil, año 2022, así como también se evaluará el método de valuación de inventarios y control interno que utiliza de las MiPymes de la ciudad de Guayaquil actualmente, se examinaran los costos del manejo de los inventarios para el año 2022 para proponer el manual de control interno y manejo de los inventarios. Este estudio tiene un enfoque de investigación analítico descriptivo, la población corresponde al personal analizado, principalmente al personal involucrado en el área de inventarios. Los datos fueron obtenidos a través de los instrumentos y técnicas de recolección de la información como son la entrevista con preguntas cerradas. Dentro de las principales conclusiones se propuso un manual de control interno que le permita a la empresa operar adecuadamente con eficiencia y eficacia, asignar adecuadamente el espacio destinado para la bodega, donde se permita manejar, controlar y supervisar el inventario disponible para la venta, minimizar las perdidas por obsolescencia o deterioro, acompañado de un Software MONICA 9 automatizado que permita el manejo de los inventarios eficientemente y de esta manera conocer el valor real del inventario en tiempo forma para la toma de decisiones
Análisis de las devoluciones del Iva a empresas exportadoras de camarón de la ciudad de Guayaquil año 2022
Authors:   Instituto Superior Tecnológico Vicente Rocafuerte, León Avilés Ronaldo Aníbal , Rivera Pizarro Cinthya ,   Instituto Superior Tecnológico Vicente Rocafuerte
Published: October 2023

El Impuesto al Valor Agregado (IVA) es uno de los tributos indirectos que mayor ingreso le genera a la administración tributaria ecuatoriana, por ende, a manera de beneficio se establece en el Art.72 de la Ley de Régimen Tributario Interno la devolución de IVA pagado a exportadores. El presente trabajo se trata de Analizar las devoluciones del IVA a empresas exportadoras de camarón de la ciudad de Guayaquil año 2022, para lo cual ha establecido un secuencial y ordenado proceso de investigación, donde a través de la introducción toma en consideración los aspectos y las variables que constituyen el motivo del estudio. Actualmente no existe una adecuada sistematización de los procesos lo que genera costos tanto a la administración por que debe contar con funcionarios capacitados que revisen los procesos y al contribuyente y en ciertos casos debe asumir costos tributarios indirectos ya que debe ya que debe contratar a personal para preparar la documentación solicitada por la administración. La administración Tributaria bajo ciertos parámetros puede realizar a varios contribuyentes el proceso para determinar si el valor correcto fue devuelto de acuerdo a la normativa tributaria
Gestión financiera y su incidencia en la rentabilidad en Pymes comerciales en la ciudad de Guayaquil periodo 2021-2022
Authors:   Instituto Superior Tecnológico Vicente Rocafuerte, Asanza Tacuri Olinda Maria , Avendaño Briones Ángel ,   Instituto Superior Tecnológico Vicente Rocafuerte
Published: October 2023

En el presente trabajo de investigación tiene como objetivo analizar la gestión financiera y su incidencia en la rentabilidad en PYMES comerciales en la ciudad de Guayaquil en los periodos del 2021 hasta el 2022, para lo cual se ha desarrollado un método hipotético deductivo mediante el tipo de investigación descriptiva de diseño no experimental, en donde se procedió a utilizar como fuente de análisis los estados financieros de los último cinco años en lo que la contadora facilitó la información de la empresa, una herramienta de análisis fue el análisis vertical y horizontal. Por otra parte, para medir la gestión financiera se utilizó los índices financieros y para medir la rentabilidad se empleó los ratios de rentabilidad, a su vez se aplicó la ficha de observación y entrevista como técnica para recabar información y determinar la efectividad de las variables. Los principales resultados de la investigación revelan que la empresa cuenta con pequeños márgenes de utilidad por los costos y gastos elevados de mantenimiento, también al no obtener nuevos contratos públicos lo que es su fuente de financiamiento para la empresa por la situación política, cambios de gobierno y la pandemia que afectó al último año investigado
The Influence of the Diameter of the Infrarenal Abdominal Aortic Aneurysm on the Outcome of Treatment
Authors:   Clinic for Vascular and Endovascular Surgery, Kalmykov Egan L. ,   Ryazan State Medical University, Suchkov Igor’ A. ,   Ryazan State Medical University, Kalinin Roman E. ,   Ryazan State Medical University, Ne’matzoda Okildzhon ,   Republican Scientific Center for Cardiovascular Surgery, Dodkhoyev Dzhamshed S. ,   Avicenna Tajik Medical University, Sharipov Firdavs K. ,   Republican Scientific Center for Cardiovascular Surgery
Published: October 2023

INTRODUCTION: Abdominal aortic aneurysm (AAA) is usually asymptomatic, and its first manifestation in most cases is a dissection or rupture, with a mortality rate exceeding 90%. Until now, the aspect of the possible effect of the diameter of the AAA on mortality after surgical treatment has not been practically studied. AIM: To study the influence of the size of AAA as a risk factor for fatality in its surgical treatment. MATERIALS AND METHODS: This study is retrospective. The study included 226 patients who underwent open and endovascular procedures for an infrarenal abdominal aortic aneurysm (iAAA) in the period 2011–2015 on the basis of the Department of Cardiovascular Surgery of the Ryazan State Medical University (Ryazan, Russia) and in 2011–2017 at the Republican Scientific Center of Cardiovascular Surgery (RSCSC) (Dushanbe, Tajikistan). There were 60 patients from Dushanbe and 166 from Ryazan. The work is part of a study on the treatment of patients with AAA and registered on the platform ClinicalTrials.gov (NCT04935268). RESULTS: Of the total number of patients with iAAA (n = 226), the number of males and females was 174 (77%) and 52 (23%), respectively, and the average age was 69.4 ± 2.6 years. The diameters of aneurysms in the RT and in the RF did not differ statistically significantly, the comorbidity rate per patient reached 1.84. In the RF and RT the number of operated patients for AAA was 31.3% and 26.7% (p > 0.05), respectively. The average diameter of the AAA in patients who survived surgery for the treatment of iAAA was 57.0 mm [53.5; 60.5] and 59.0 mm [48.0; 73.0] (p > 0.05, U = 2953.5; Z = 0.91), respectively. The diameter of the AAA in deceased patients after surgery (planned and rupture) in the RT and the RF is 60.0 mm [55.0; 65.5] and 72.0 mm [53.5; 80.5] (p > 0.05, U = 129.0; Z = 1.14), respectively. In the RT, the size of the AAA is not associated with a fatal outcome (57.0 mm [53.5; 60.5] and 60.0 mm [55.0; 65.5]; p > 0.05 (U = 207.0; Z = 1.49)). In the RF the size of the AAA in deceased patients was statistically significantly larger than in survivors — 72.0 mm [53.5; 80.5] and 59.0 mm [48.0; 73.0], respectively; p = 0.029 (U = 1394.5; Z = 2.18). The 30-day mortality rate after planned and emergency operations was comparable between the patients of the two clinics. CONCLUSION: The diameter of the AAA is a risk factor for the development of a fatal outcome after treatment.
Study of Carbon Material Possibilities in Bearings for Hip Arthroplasty Using Mathematical Modeling and Bench Tests
Authors:   Penza State University, Mitroshin Aleksandr N. , Ksenofontov Mikhail A. ,   Penza State University, Kosmynin Dmitriy A. ,   Penza State University
Published: October 2023

INTRODUCTION: One of the most effective methods of surgical treatment of late-stage coxarthrosis is total hip replacement. However, the steady increase in the number of primary endoprosthetics results in the increase of revision surgeries. Our proposed solution to use carbon material in bearings will decrease the number of revision surgeries due to component wear, and may also significantly reduce the risk of aseptic loosening. AIM: To compare stress and torque of the head and liner structures with bearings made of carbositall with diameters of 28 mm and 38 mm using mathematical modeling and to compare the volume wear of bearings made of ceramics and carbositall using bench tests. MATERIALS AND METHODS: Mathematical modeling was used to assess the stresses in the proposed design. The mathematical model was created by software-based methods in ANSYS 5.7 environment. Structures with diameters of 28 mm and 38 mm were studied. A physical model of a bearing made of carbositall was made for bench testing. In accordance with requirements of GOST 31621-2012, a torque test of a carbositall bearing was performed. In accordance with GOST R ISO 14242-3-2013, a study of volume wear of bearings made of ceramics and carbositall was performed. RESULTS: Mathematical modeling of a bearing made of carbositall with a size of 38 mm in comparison with a bearing with a diameter of 28 mm showed a decrease in intensity of compressive and tensile stresses with a natural increase in the safety factor for components made of carbositall. Based on the results of the torque test of bearing for hip arthroplasty, the torque was 1.1 Nm. This indicator is 26.6% lower than the maximum permissible according to GOST 1.5 Nm. The torque index was 1.10 Nm. As a result of a comparative test for wear of bearing made of ceramic and carbositall, the mass loss of the ceramic head was 0.009 g, the mass loss of the ceramic liner was 0.013 g. The head made of carbositall lost 0.006 g, while the liner lost 0.009 g. In total, the mass loss of the carbon bearing is 31.8% less than that of the ceramic one. CONCLUSION: A large-diameter bearing showed the best strength characteristics of the carbon part of the structure, however, the strength limit of the titanium sleeve decreased. The torque of the carbon bearing was 1.1 Nm, which is 26.6% lower than the maximum permissible index, and the volume wear of the bearing made of carbositall is 31.8% less than the volume wear of the bearing made of ceramics.
The Condition of the Oral Mucosa in Workers of the City of Ryazan
Authors:   Ryazan State Medical University, Mezhevikina Galina S. , Vagner Vladimir D. ,   Ryazan State Medical University, Kokunova Anzhela S. ,   Ryazan State Medical University
Published: October 2023

INTRODUCTION: Malignant neoplasms are the cause of significant socio-economic losses of society, and therefore their early diagnosis, as well as the diagnosis of precancerous diseases and the identification of risk factors for their occurrence remain urgent tasks of medicine. AIM: To study the prevalence of precancerous and oncological diseases of the oral mucosa (OM) in workers of Ryazan State Instrument–Making Enterprise (RSIME). MATERIALS AND METHODS: In May–June 2022, 301 employees of RSIME aged from 19 to 74 years were examined for the first time. During the examination, a clinical dental check-up and autofluorescence stomatoscopy were performed. The results of the examination were recorded in a card for assessing the dental status of adults, approved by World Health Organization. RESULTS: After a preventive examination of the workers of RSIME, 30.6% of the examined patients were found to have diseases and pathological changes in the OM, 9.8% was diagnosed with leukoplakia. From the total number of examined patients: 25.9% have a sanitized mouth, 32.9% smoke, and the most of smokers are people from 19 to 44 years old. CONCLUSION: The data obtained confirm the expediency of regular periodic medical examinations using screening diagnostic methods.
A Rare Variant of Varicose Transformation of Subcutaneous Veins in the Popliteal Region Due to an Incompetent Perforator Veins
Authors:   Ryazan State Medical University, Shanayev Ivan N. , Pshennikova Kristina S. ,   Regional Clinical Cardiology Dispensary, Khashumov Ruslan M. ,   Ryazan State Medical University
Published: October 2023

INTRODUCTION: Localization of varicose-transformed subcutaneous veins in the popliteal space immediately aims both ultrasound diagnostics doctors and surgeons for the pathology of the short saphenous vein. However, this does not always correspond to reality. A rather rare cause of transformation of subcutaneous veins may be an incompetent perforator vein. The article presents a clinical case of varicose transformation of subcutaneous veins of the popliteal region through an incompetent perforator vein. Initially, the patient was diagnosed with the bulge of the subcutaneous veins within the short saphenous vein. Subsequently, during a duplex scan in a specialized department, an incompetent perforator vein of the popliteal region was revealed, which was confirmed intraoperatively. The article also describes the structural features of the perforator vein of this localization. CONCLUSION: An incompetent perforator vein of the popliteal region may be the cause of a false positive diagnosis of varicose transformation in the system of the short saphenous vein. A large arterial branch from the popliteal artery is located next to the perforator vein of the popliteal region at the subaponeurotic level, which requires their separation before resection of the vein.
Total Ankle Joint Replacement. Difficulties, Errors, Misconceptions, Historical Retrospective, Modernity and Perspective of Development. Part 1
Authors:   Tsivyan Novosibirsk Research Institute of Traumatology and Orthopaedics, Skuratova Liliya K. , Luchshev Matvey D. ,   Tsivyan Novosibirsk Research Institute of Traumatology and Orthopaedics, Gudi Sergey M. ,   Tsivyan Novosibirsk Research Institute of Traumatology and Orthopaedics, Stolyarov Aleksey A. ,   Sanatorium named after M. Y. Lermontov, Pakhomov Igor’ A. ,   Tsivyan Novosibirsk Research Institute of Traumatology and Orthopaedics
Published: October 2023

INTRODUCTION: The general problem of ankle joint replacement is characterized primarily by the continuing compliance of the majority of orthopedic traumatologists to the surgical treatment of the ankle area arthrodesis as the ‘gold standard’ for the treatment of patients with crusarthrosis. This is explained by the surgical tradition, insufficient awareness of the professional community about the achievements concerning the technical characteristics of modern endoprostheses and the results of their use. The search and analysis of scientific literary sources were carried out in the PubMed and eLibrary databases. The search depth is 50 years. Due to the accumulation and the necessity to analyze a significant amount of information on the topic, the article is divided into 2 parts. The analysis of domestic trends in ankle arthroplasty and the reasons for their failures is carried out. CONCLUSION: For many years, in the treatment of late stages of degenerative and dystrophic diseases of the ankle joint, as well as traumatic injuries, preference to arthrodesiswas given. However, this surgical procedurehas its disadvantages and complications, some of which worsen in the future. Similar to other joints, the search for technical solutions for ankle arthroplasty began. Most of the founddomestic publications on development of varying technical innovations and approaches are characterized by a lack of clinical data and results. Thus, the article reflects the difficulties of switching to organ-preserving level of interventions in regards to the ankle joint, namely, joint replacement.
Telemedicine: Definition, Implementation Features, Effectiveness and Prospects for Use in Cardiology
Authors:   Ryazan State Medical University, Pravkina Ekaterina A. , Pereverzeva Kristina G. ,   Ryazan State Medical University, Budanova Irina V. ,   Ryazan State Medical University, Yakushin Sergey S. ,   Ryazan State Medical University
Published: October 2023

INTRODUCTION: Information and communication technologies in healthcare were realized in the advent of telemedicine (TM). This article presents current definitions, as well as describes the existing difficulties of terminology and classification. The main documents regulating the use of TM technologies in Russia at present are given. It is noted that the development of TM and its introduction into clinical practice is associated with a number of barriers that are associated with patients, medical professionals, as well as various technical, legal, ethical and economic problems. The presented article refers to a narrative review focused on some sources for the purpose of an unstructured description of the direction of interest. The search for literary sources was carried out in PubMed, eLibrary systems for 1995–2023 by keywords: telemedicine, telemedicine technologies, telemedicine in cardiology, telemedicine efficiency, remote control systems, telemonitoring, telemedicine in practice. The article presents the information about the role of TM in certain groups of cardiac patients, namely in patients with implanted medical devices, hypertension, chronic heart failure, high cardiovascular risk, as well as the elderlypatients and in cardiac rehabilitation. Changes in the areas of TM use are discussed, namely, attempts to use it in emergency pathology, in particular in acute coronary syndrome. CONCLUSION: Despite the absence of a common global practice and approaches to TM and the well-known barriers restraining its development, the prospects of this direction are beyond doubt. The spread of new TM technologies contributes to the improvement of providing health services system. It allows doctors to work with patients more efficiently and increases the opportunities of patients to receive expert advice. The accumulated scientific knowledge, the gradual adaptation of TM to the user’s needs, taking into account practical experience, make it possible to use this technology successfully in different groups of cardiac patients. In the future, artificial intelligence will be connected and trained to expand the opportunities for remote data analysis and the possibility of remote monitoring of patients' health, related regulatory issues will be resolved, as well as of the liability of the parties will be clearly defined. In the context of increasing demand for TM with an increase in the level of security of services provided and data protection, a global spread of advanced professional knowledge and skills is expected to improve public health.
TANGGUNG JAWAB PEMILIK KAPAL ATAS KASUS TUMPAHAN MINYAK MT ALYARMOUK DI PERAIRAN KEPULAUAN RIAU BERDASARKAN CONVENTION ON CIVIL LIABILITY FOR OIL POLLUTION DAMAGE 1992
Authors: Muqtarib Muqtarib
Published: October 2023

ABSTRAK

Indonesia merupakan negara yang memiliki wilayah laut yang sangat luas, diperkirakan luasnya mencapai 3.273,310 Km. Dengan wilayah laut yang sangat luas itu, Indonesia tentu tidak akan luput dari berbagai permasalahan seperti pencemaran laut, termasuk juga pencemaran akibat tumpahan minyak. Pada tahun 2015 terdapat kecelakaan kapal antara MT Alyarmouk (Libya) dengan MV Sinar Kapuas (Singapura), kecelakaan tersebut mengakibatkan lambung MT Alyarmouk menumpahkan 4.500 ton minyak mentah ke perairan perbatasan Singapura-Indonesia, yang  berakibat pada tercemarnya perairan Kepulauan Riau. Metode penelitian yang digunakan dalam penelitian ini adalah pendekatan yuridis normatif serta metode analisis dengan menggunakan pendekatan yuridis kualitatif. Berdasarkan hasil penelitian, ketentuan-ketentuan dalam Convention On Civil Liability For Oil Pollution Damage 1992 (CLC 1992) mewajibkan General National Maritime Transport Company selaku pemilik dari MT Alyarmouk bertanggung jawab secara mutlak atas pencemaran yang terjadi, selanjutnya pemilik kapal tersebut juga harus memberikan kompensasi sebagai bentuk tanggung jawabnya, kepada pihak yang dirugikan akibat pencemaran tersebut.

ABSTRACT

Indonesia is a country that has a very large sea area, an estimated area of 3,273,310 km. With such a vast sea area, Indonesia will certainly not escape various problems such as marine pollution, including pollution due to oil spills. In 2015 there was a ship accident between MT Alyarmouk (Libya) and MV Sinar Kapuas (Singapore), the accident resulted in MT Alyarmouk's hull spilling 4,500 tons of crude oil into the waters of the Singapore-Indonesia border, which resulted in contamination of the waters of the Riau Islands. The research method used in this research is a normative juridical approach and an analytical method using a qualitative juridical approach. Based on the result of the research, provisions in the Convention On Civil Liability For Oil Pollution Damage 1992 (CLC 1992) require the General National Maritime Transport Company as the owner of MT Alyarmouk is absolutely responsible for the pollution that occurs, then the owner of the ship must also provide compensation as a form of responsibility, to the party who is harmed by the pollution.
Perancangan visual display katalog produk dengan pendekatan ergonomi
Authors: Advendina Gisella Biaz , Kurnianingtyas Chandra Dewi
Published: October 2023

Sistem informasi diperlukan oleh perusahaan untuk meningkatkan penjualan, misalnya katalog produk sebagai alat untuk mempromosikan produk dan menarik minat calon pembeli. Meskipun katalog produk merupakan alat pemasaran yang umum digunakan, namun masih banyak katalog yang tidak mempertimbangkan aspek ergonomi yang penting bagi pengguna. Tujuan penelitian ini adalah untuk menciptakan display visual katalog yang mudah digunakan dan efisien bagi pengguna, sehingga pengguna dapat dengan cepat dan mudah mendapatkan informasi tentang produk yang dibutuhkan. Langkah awal dalam penelitian ini adalah mengumpulkan informasi yang diperlukan untuk kemudian dilakukan perancangan dengan metode kreatif. Selanjutnya, hasil rancangan katalog produk dievaluasi berdasarkan aspek ergonomi dengan menganalisis ukuran huruf, komposisi warna, beserta efek psikisnya. Analisis ukuran huruf menunjukkan bahwa ukuran huruf aktual melebihi ukuran huruf rekomendasi, maka dapat diketahui bahwa ukuran huruf pada display website katalog produk sudah ideal dan sesuai dengan rekomendasi. Hasil analisis warna pada tampilan website juga memberikan legibility yang bagus dan memberikan efek bersih dan menenangkan. Dari analisis visual display katalog produk dengan pendekatan ergonomi ini disimpulkan bahwa ukuran huruf, ketinggian display, jarak pandang mata, dan komposisi warna pada website katalog produk sudah ideal.