bluuebunny/crossref_metadata_2025 huggingface dataset:
DIGITALIZATION IN THE AGRICULTURAL SPHERE AND ITS DEVELOPMENT TRENDS
Authors:   Poltava State Agrarian University, Panasenko Nataliia
Published: December 2022

Introduction. The article analyzes the definitions of the concept “digitalization” formulated by various authors. The author's definition is proposed, according to which digitalization in management is digital data processing in combination with a developed toolkit to support management decision-making. The role of digitalization in solving the main tasks in the management of the agrarian sphere at the state level is defined. A number of economic-mathematical models are proposed, the use of which in the conditions of digitalization will ensure an increase in the effectiveness of management decisions. On the basis of the conducted research, the priority measures for the implementation and development of digitalization in the management of the agrarian sphere have been determined. Materials and methods. The methodological basis of the research is general and special scientific methods: analysis and synthesis; deduction and induction; comparison and generalization. A systematic approach was used to determine the connections between phenomena and processes, an abstract-logical approach was used to clarify the concept of digitalization, and a monographic approach was used to study and analyze literary sources. Results and discussion. A large number of weakly formalized and non-formalized tasks arising in the process of managing socio-economic systems and the presence in this field of a significant number of vaguely defined concepts require the combination of the digitalization process with a system of economic-mathematical models and intelligent technologies. Based on this, we proposed the definition of digitalization in management - it is digital data processing in combination with a developed toolkit to support management decision-making. In the process of decision-making in the management of the agrarian sphere, a prominent place should be occupied by models of trend and factor forecasting that reflect seasonal fluctuations of indicators, a comprehensive integrated assessment of the state of development of this sphere, methods of multi-criteria optimization and decision-making in situations of risk and uncertainty, simulation computer modeling of economic processes. Digitalization makes it possible to effectively apply these methods and models. Conclusions. Digitalization significantly changes the traditional approach to management processes in the agrarian sphere and opens up new opportunities for the effective application of economic and mathematical models in these processes, which are combined into a single system. The development and research of digital equivalents of real management decisions makes it possible to assess in real time the consequences of these decisions and the risks associated with them and to choose the best option for management actions.
STRENGTH-WEAKNESS-OPPORTUNITY-THREATS (SWOT) ANALYSIS OF EXTRAORDINARY LEGAL EFFORTS, EXECUTIONS, AND EXAMINATIONS IN ADDRESSING THE CORRUPTION CHALLENGES IN INDONESIA
Authors: Sinaga Henry D.P.
Published: December 2022

One of the great expectations for dealing with the challenge of corruption in Indonesia is to strengthen the role of Extraordinary, Execution and Examination Legal Remedies, which are the (legal) structure of the Attorney General's Office. Based on a literature review using the Strength-Weakness-Opportunity-Threats (SWOT) Analysis, it can be concluded that revitalizing the Extraordinary Legal Remedies, Execution, and Examination sections can improve the optimization of the Attorney's performance in dealing with corruption in Indonesia. This revitalization is based on a SWOT analysis which shows that there are still weaknesses and threats, both internally and externally, at the Attorney General's Office. It is necessary to consider the existence of sub-monitoring and evaluation, as well as sub-reporting and analysis to strengthen the duties and functions of Extraordinary Legal Remedies, Execution, and Examination to minimize existing weaknesses and threats.
CONSIDERING BOSTON CONSULTING GROUP'S MATRIX OF STRENGTHENING COMPETITIVENESS AND GOOD GOVERNANCE IN INDONESIA:
Authors: Sinaga Benny R.P.
Published: December 2022

The government must address several problems through good governance of tin mining companies in Indonesia in connection with tin reserves in Indonesia which are expected to run out in the next ten years. This study is sufficient to use a literature review to answer the existing problems. It was concluded that the reduced competitiveness of tin mining companies in specific years and the many obstacles they faced could be corrected by implementing the Boston Consulting Group (BCG) Matrix strategy.
BUSINESS PROCESS REDESIGN OF DIGITAL LIBRARIES IN INDONESIA
Authors: Barus Leo
Published: December 2022

Minat siswa dan mahasiswa di Indonesia untuk mengunjungi perpustakaan masih sangat jauh dari harapan, sehingga perlu untuk memperbaiki dan meningkatkan kemampuan perpustakaan digital. Dengan mempergunakan studi literature, disimpulkan bahwa perbaikan dan peningkatan minat baca siswa dan mahasiswa di Indonesia dapat dilakukan dengan mendesain ulang proses bisnis perpustakaan digital.
Managing Geotechnical Uncertainty With Simulation Models: An Introduction
Authors: Look Burt
Published: December 2022

In a standard deterministic analysis discrete scenarios are considered, and a moderately conservative “characteristic” value is used as a design basis. However, fixed or exact values in a real-world geotechnical site seldom occurs. Deterministic approaches may not explicitly consider the ground uncertainty. Simulations using various probabilities provides for this uncertainty as each parameter input is treated as a random variable within certain measured ranges or ability to evaluate. Monte Carlo (MC) sampling is a traditional technique for generating random numbers to sample from a probability distribution. When low probability events occur, a small number of MC iterations might not sample sufficient quantities of these outcomes for inclusion in the simulation model. Latin Hypercube (LH) sampling uses stratification of the input probability distributions, to overcome the limitations of Monte Carlo sampling. The simulation results show low probability outcomes are included in the sampling for the simulation model. At a high number of simulation iterations both provide similar outputs, but at low simulation iterations the LH is more reliable. However, both the MC and LH sampling suffer from impractical values at low or high probability events when the normal probability density function (PDF) is adopted. The normal PDF is commonly used in statistical modelling. Non-normal PDFs often represent the best fit PDF when a goodness of fit test is carried out. The errors associated with using the common normal PDF are shown with the above-mentioned simulation models. This best fit PDF applies whether simulation models as described above is used or even with simple “what if” sensitivity models in traditional analysis.
Geotechnical Considerations Associated With The Poatina Power Station Cavern
Authors: Sainsbury David , Stacey Kevin , Sainsbury Bre-Anne , Hills Peter
Published: December 2022

The Poatina Power Station Cavern was designed with a focus on the newly emerging rock mechanics theory and principles that were rapidly developing during the 1950’s and 60’s. This included measurement of the in-situ rock mass stress condition and photo-elastic analysis of the induced stress around the planned underground openings. These studies led to the adoption of many ‘firsts’ in rock mechanics that included a trapezoidal roof shape, installation of stress relieving slots and fully encapsulated grouted rebar bolts. Based on historical documentation of the construction of the cavern, a three- dimensional numerical model of the cavern construction sequence has been developed. The model is able to provide an accurate match to the observed and monitored ground conditions during construction that includes observed failure modes and instrumentation data. Based on the calibrated model outcomes, Hydro Tasmania was able to undertake a more informed review of the risks associated with the current and future ground support capacity and were able to reliably assess rehabilitation requirements for the cavern support system.
EFFECTS OF LAND-USE CHANGES ON SOIL CHEMICAL PARAMETERS IN KAKAMEGA-NANDI FOREST COMPLEX
Authors: Wabusya Moses , Pili N.N. , Bekuta B.K. , Tsingalia H.M. , Kakembo V.
Published: December 2022

 

 

 

Background. Carbon lost in form of carbon dioxide contributes to climate change corresponding to altered soil chemical properties and plant growth. Land-uses that minimize carbon loses are highly encouraged. Unfortunately, in the Kakamega-Nandi Forest Complex, the Kenyan government continues to promote shamba systems (now Plantation Establishment for Livelihood Improvement Scheme) where the forest adjacent communities are allocated bush land plots to provide land for small-scale agriculture, cash crop farming and planting of tree seedlings for a specified period of time inside the forest. Objective. This study analyzed six land-uses and their effect on the dynamics of soil chemical parameters using landsat images and recent soil geochemical surveys. Methodology. Land cover and vegetation changes were determined using a series of multispectral Landsat images. A total of seven sets of image datasets were downloaded from the Glovis web portal (http://glovis.usgs.gov/) for the years 1985 to 2015 with the cloud cover ranging from 1 to 10% taken in the dry season. The land-use/cover classification scheme adopted was based on expertise knowledge and literature of land-use/cover activities.  Results. The results show that (i) small-small agriculture has increased while bush-land has decreased between 1985 and 2015; (ii) smallholder farming of maize, pasture and sugarcane depleted soil organic carbon whereas perennial tree plantations (regenerated forests) increased soil carbon stocks; (iii) nitrogen decreased in all tested land-uses except in maize plantations; (iv) phosphorus remained unchanged in all land-uses, potassium significantly decreased in tea plantations while sugarcane and regenerated forests land-uses had decreased soil calcium stocks. Implications. The study provides evidence for the review of the shamba system. Conclusion. The study has shown that land-use changes through the application of the shamba system alter the dynamics of soil chemical parameters key among them are soil organic carbon, nitrogen and calcium. Cultivation of annual crops decreases soil carbon stocks which may lead to an influx of carbon dioxide in the atmosphere and increased vulnerability to climate change.
IDENTIFICACIÓN DE NECESIDADES DE INVESTIGACIÓN SOBRE LA DINÁMICA DE CARBONO Y NITRÓGENO EN SISTEMAS AGROFORESTALES DE CAFÉ EN MÉXICO
Authors: Ayala-Montejo Diana , Monterroso Rivas Alejandro Ismael , Baca Del Moral Julio , Escamilla Prado Esteban , Sánchez Hernández Rufo , Pérez Nieto Joél , Rajagopal Indumathi , Alegre Orihuela Julio César , Valdes Velarde Eduardo
Published: December 2022

Background. Current research advances related to carbon and nitrogen dynamic and the environmental problems, that impact on the socioeconomic functions of agroforestry systems, and the importance of their floristic diversity, have not yet been analyzed in an integrated way for coffee agroforestry systems in Mexico. Objective. It consisted to identify the areas in need of research on carbon and nitrogen dynamic in coffee agroforestry systems in Mexico. Methodology. Publications were compiled until 2018, on the potential of agroforestry systems to keep carbon and nitrogen reserves, which influence in the carbon and nitrogen biogeochemical cycles, and greenhouse gas emissions, as well as socioeconomic importance, productive diversification, and the problems faced by small producers with their ability to adapt to climatic variations. This information was organized and subjected to a cluster analysis with the NVivo12 program, which allowed evaluating the frequency of research for each topic and the relationship between them. Results. 43% of publications are related to carbon storage and 13% on nitrogen dynamic in agroforestry systems, while 37 and 35% evidenced their environmental importance and ability to adapt to climatic variations, respectively. The socioeconomic characteristics show that there is a productive diversity, a floristic composition in multi-strata and traditional management, which affects on carbon and nitrogen dynamic, since the quality of organic matter depends on the diversity of the floristic composition of the system and the type of management applied by the producer. Implications. At present this analysis contributes to detect the advances of investigations on carbon and nitrogen dynamic to generate integrated research according to the Mexican national reality. Conclusions. Researchs should focus on: (1) the productive diversification and carbon and nitrogen dynamic; (2) effect of socioeconomic variations on carbon and nitrogen dynamic; (3) degree of sensitivity of carbon and nitrogen dynamic to climatic variations; (4) identification of adaptive capacities, that allows carbon and nitrogen dynamic to be maintained.
Analysis of Project Activities for Strengthening Pancasila Student Profiles (P5) through the Manufacturing of VCO Products
Authors: Ayub Syahrial , Agustina Agustina , Makhrus Muh.
Published: December 2022

This study aims to analyze the stages of making Virgin Coconut Oil (VCO) at SMAN 1 Sekotong, West Lombok, NTB Indonesia. Making Virgin Coconut Oil (VCO) products is one of the Projects to Strengthen Pancasila Student Profiles (P5) in the independent curriculum. The research objectives were achieved with qualitative descriptive methods and what was found during the research. Data was collected by observation, interviews with teachers directly involved in this project. The results of the analysis show the stages of making Virgin Coconut Oil (VCO) starting from selecting good coconuts, making coconut milk, separating the first coconut milk, and separating the second coconut milk and finally getting Virgin Coconot Oil (VCO).
The Impact of Elements of Integrated Marketing Communication on Planned Brand Identity
Authors: KILIÇ Hilal , ELHADARY Tariq , TÜRKER Onur
Published: December 2022

This study investigates how the integrated marketing communication elements, which come to the fore in academic studies and sectoral applications, impact brand identities built in the context of global sportswear brands.The purpose of this study is to identify which aspects of integrated marketing communication, such as websites, social media, advertising, public relations, direct marketing, and brand elements (logo, name, and colour), have an effect on brand identity and how brand awareness is shaped as a result of this impact.Analyses have revealed that the name affects the fictionalised brand identity from public relations, website, and brand elements of Integrated Marketing Communication.
İnternet Reklamcılığına Yönelik Tutumların Ölçülmesi: X, Y ve Z Kuşakları Arasında Karşılaştırmalı Bir İnceleme
Authors: SOLAK Bahadır Burak , GAZİ Mehmet Ali
Published: December 2022

Bu çalışma, internet reklamcılığına yönelik tutumun X, Y ve Z kuşakları arasındaki farklılıklarını incelemektedir. Bu kapsamda farklı kuşaklardan katılımcıların bilgi, eğlence, sosyal rol, materyalizm, sahtecilik, sinirlendirme, değer yozlaşması, tutum ve davranışsal tepki boyutları bağlamındaki tutumları "İnternet Reklamcılığına Yönelik Tutum Ölçeği” kullanılarak ölçülmüştür. Araştırma, 20.09.2022 – 27.09.2022 tarihleri arasında, nicel araştırma yöntemlerinden anket tekniği kullanılarak yaşları 18-58 arasında değişen her kuşağı eşit sayıda temsil eden 150 kişiden oluşan bir örneklem üzerinde yapılmıştır. Bulgular, X kuşağının internet reklamcılığına karşı olumsuz bir tutuma sahip olduğunu, Y ve Z kuşağının ise olumlu bir tutuma sahip olduğunu göstermektedir. Bununla birlikte çalışmada, X kuşağının internet reklamlarına karşı korumacı olduğu, Y kuşağının ise daha rasyonel bir yaklaşım benimsediği tespit edilmiştir. Araştırma, internet reklamcılığındaki nesiller arası farklılıkları kavramsallaştırmaya ayrıca internet reklamcılığının tüketici ihtiyaç ve isteklerinin doğru bir şekilde anlaşılmasında nasıl bir rol oynadığını göstermeye çalıştı.
Two nonnegative solutions for two-dimensional nonlinear wave equations
Authors: Georgiev Svetlin , Majdoub Mohamed
Published: December 2022

We study a class of initial value problems for two-dimensional nonlinear wave equations. A new topological approach is applied to prove the existence of at least two nonnegative classical solutions. The arguments are based upon a recent theoretical result.
A derivative-type operator and its application to the solvability of a nonlinear three point boundary value problem
Authors: Castillo René Erlín , Sultan Babar
Published: December 2022

In this paper we introduce an operator that can be thought as a derivative of variable order, i.e. the order of the derivative is a function. We prove several properties of this operator, for instance, we obtain a generalized Leibniz’s formula, Rolle and Cauchy’s mean theorems and a Taylor type polynomial. Moreover, we obtain its inverse operator. Also, with this derivative we analyze the existence of solutions of a nonlinear three-point boundary value problem of “variable order”.
Implementation of Role-Playing Learning Models in Biology Lessons of High School Students
Authors: Gusmaweti  , Meiliza ARDILLA  , Wince Hendri
Published: December 2022

This study aims to look at differences in biology learning outcomes using role playing models and conventional methods (lectures, discussions, question and answer) of class X SMA Negeri Lubuk Linggau. This type of research is experimental research. The population in the study were all students of class X SMA Negeri 1 Lubuk Linggau. Sampling was carried out by purposive sampling technique, then the determination of the experimental class and control class was carried out by random method. Obtained class X.1 as the experimental class, and class X.2 as the control class. The research instrument was used in the form of test questions for cognitive aspects of student learning outcomes, and observation sheets for affective and psychomotor aspects of learning outcomes.  Hypothesis testing was carried out by t-test. The results showed that the average score for biology learning outcomes for students using Role Playing was 74.70 and 66.80 with conventional methods. There is a significant difference at the 0.05% alpha level. The results of observations of student learning in the experimental class affective aspects 90.8 and psychomotor and 91.3, while in the control class affective aspects 64.8 and psychomotor 66.6. It can be concluded that the application of the Role Playing method in biology learning is better than conventional learning.
Study of bone marrow aspirations -5 years review from a single center in Kuwait- An audit
Authors: Sunny Joseph Varghese  , Hanan Jasim Alwazzan  , Lamis Mohamed Tawfiq  , Fady Ashraf Youssef
Published: December 2022

We reviewed the bone marrow examination (BME) studies performed in the last five-year period with the objective to find out the findings and ascertain the role of this procedure in the diagnosis at Al Adan hospital, this public teaching hospital of the state of Kuwait in Middle East. Samples were collected after history taking and clinical examination. Blood samples analyzed for CBC parameters along with biochemical and viral markers. Bone marrow aspiration samples were collected and stained with May Grunwald Giemsa stain, trephine biopsy processed and stained with Hematoxylin & Eosin along with Perl’s stain for iron and Reticulin stain. All samples were analyzed and results pooled by the team of hematopathologists. We reviewed 264 cases for BME and found ages ranging from 07 months to 95 years and 170 males and 94 females were included in the study. The array of conditions included 53% of clonal haemopoietic disorders including leukemias, Myelo Proliferative Neoplasm (MPN) , Myelo Dysplastic Syndrome (MDS), & Plasma cell disorders. 3.5% aplastic anemias, while only 5.4 % with nutritional causes and 28.5% of cases having various reactive causes; Metastatic deposits were found in 1.5% and haemophagocytosis in 3.5% of the subjects. Results were in concordance with studies conducted from developed nations. Our study concludes that bone marrow examination is crucial in diagnosis to elucidate the various etiology of afflictions of bone marrow and helps in proper management in this Middle East country.
The response of blood plasma metabolite concentrations of anestrus lactating buffalo to CIDR-eCG with or without melatonin treatment
Authors: Ramadan Tamer Awad , Sharma    Rakesh Kumar , Phulia Sushil Kumar , Balhara Ashok Kumar , Ghuman Sarvpreet Singh , Singh Inderjeet
Published: December 2022

The objective of this study was to compare the efficiency of CIDR-eCG protocol with or without melatonin treatment on blood plasma metabolites in anestrus Murrah buffaloes during out-of-breeding season. Twelve lactating Murrah buffaloes were allotted to control and treated groups each of six animals. Treated buffaloes were implanted with melatonin (18 mg melatonin / 50 kg body weight) for 45 days, then animals of both groups received CIDR for 9 days. All animals received 500 IU eCG intramuscularly one day before CIDR removal and 10 µg GnRH on the day of AI. The animals were subjected to estrus detection daily as per farm routine. At weekly intervals, blood samples were collected to determine the concentration of blood plasma metabolites over 84 days’ period between June and September. All buffaloes exhibited estrus after CIDR removal. CIDR-eCG preceded with melatonin treatment increased plasma total protein, albumin, cholesterol and HDL-cholesterol (P<0.05) in comparison to only CIDR treated control. Buffaloes treated with melatonin plus CIDR exhibited increased (P<0.01) plasma glucose on days 28, 53 and 55 and reduction (P<0.01) in HDL and AST at time of pregnancy diagnosis, while plasma concentration of phosphorus was the highest (P<0.05) at day 84. In conclusion, CIDR-eCG treatment preceded with melatonin implantation improved reproductive performance and altered blood metabolite composition of lactating buffaloes during out-of-breeding season as compared to CIDR-eCG only.
Safe-Haven Effectiveness of Cryptocurrency: Evidence from Stock Markets of COVID-19 Worst-Hit
African Countries
Authors: RAIFU Isiaka Akande , OGBONNA Ahamuefula Ephraim
Published: December 2022

The study assessed the hedge or safe-haven property of five cryptocurrencies for stocks of
three COVID-19 worst-hit African countries. We address two main concerns bordering on the
predictive capacity of African stocks for cryptocurrency returns and the safe-haven property
that cryptocurrencies could offer to African stocks. A distributed lag model, with explicitly
incorporated salient statistical features, was adopted based on its efficient management of
parameter proliferation and estimation biases. We ascertained the model’s in-sample
predictability and evaluate its out-of-sample forecasts performance in comparison with the
historical average model, using Clark and West statistics. While African stocks significantly
predicted cryptocurrency returns, the cryptocurrency-stocks nexus revealed the diversifier and
safe-haven property of cryptocurrencies for African stocks in periods of normalcy and
crisis/pandemic, respectively. Our predictive model outperformed the historical average model in
the out-of-sample. Our results may be sensitive to cryptocurrency-stocks nexus and sample
periods but not the out-of-sample forecast horizons
Research on the Interconnections between Human Capital and the Education System in Romania
Authors: GRUESCU Riana Maria
Published: December 2022

The progress of a society depends on and can only be sustained through permanent education, which implies the acquisition of new knowledge, and in this way human capital can be exploited to the maximum. Through education, any individual acquires the ability to develop his potential, and in order to do this, he must undertake a process of education through which he accumulates knowledge and skills, harmoniously develops his personality, as well as shapes his character. Through education and culture, creativity, adaptability, but also other necessary qualities are developed, and as the finality of education, insertion and social integration are of particular importance for any graduate, contributing to his fulfilment from several points of view, material, spiritual, moral.The article analyses the participation in education of the Romanian population, the evolution of the teaching staff and the general expenses for education in the period 2010-2021.© 2022 The Author(s). Published by RITHA Publishing. This article is distributed under the terms of the license CC-BY 4.0., which permits any further distribution in any medium, provided the original work is properly cited.
Un nuevo contrato cronosocial. Imaginando un arte del tiempo
Authors:   UB, Bassas Vila JAVIER , FRIERA RAQUEL ,   INSTITUTO DEL TIEMPO SUSPENDIDO
Published: December 2022

Este texto presenta el Instituto del Tiempo Suspendido, un pro-yecto artístico y filosófico que propone alternativas a la polí-tica del tiempo en nuestras sociedades. Para ello, utiliza dos estrategias principalmente. Por una parte, aprovecha el arte contemporáneo como una disciplina indisciplinada en la que se pueden armar espacios y tiempos no sometidos a la política neoliberal actual. Por otra parte, se apoya en la reflexión filo-sófica y política para contestar la relación entre poder y tiempo a través de conceptos como crononormatividad, cronodiver-sidad, régimen temporal o tiempo indeterminado. Al final del texto, se ofrece un enlace para realizar un “juicio temporal”.
Jababacoa=Jababacoa
Authors:   UCM, Alonso LORETO , Gárciga LUIS , Galvagni EDUARDO , DEL POZO DIEGO ,   USAL
Published: December 2022

Este paper visual da cuenta del proyecto Jababacoa del colectivo artístico C.A.S.I.T.A (Loreto Alonso, Eduardo Galvagni y Diego del Pozo) + Luis Gárciga. El proyecto comenzó con la instalación de un taller de confección textil en el Museo Histórico de Guanabacoa (La Habana, Cuba). Con máquinas de coser modernas y todos los materiales necesarios, se convocó a las antiguas trabajadoras de los talleres textiles que hasta los años noventa podían encontrarse en el municipio de Guanabacoa. Se trataba de la creación de un espacio, pero también de una reconstrucción de la historia oral de estas mujeres, así como de la oportunidad para compartir posiciones y preguntas sobre modos de producción y nuevos imaginarios. Con los materiales documentales y las ideas que surgieron en la colaboración, realizamos una instalación audiovisual con proyecciones de videomapping que se presentó en el Centro de Desarrollo de las Artes Visuales para la XIII Bienal de La Habana en 2019.
La fragilidad como resistencia colectiva. Sobre Frágiles, de Remedios Zafra
Authors:   UCM, Moreno Sainz Ezquerra YERA
Published: December 2022

Reseña del libro Frágiles, de Remedios Zafra
Epílogo. Una vida más alla del trabajo
Authors: WEEKS KATHI
Published: December 2022

Epílogo del libro El problema del trabajo, Madrid, Traficantes de sueños, 2020. Cesión por parte de la autora y la editorial
Todo lo que puedes hacer en el trabajo (no olvides sonreír): Cuerpos 24/7 y emociones hiperflexibles
Authors:   INVESTIGADOR INDEPENDIENTE, Marcos Barquilla LUCAS
Published: December 2022

Pensando con-junto a diferentes imágenes y propuestas artísticas, el texto invita a reflexionar alrededor de los presentes escenarios de flexibilidad y corto plazo: la disolución de las barreras de los tiempos de trabajo y no trabajo, así como la fragmentación de la experiencia temporal. Un recorrido por algunos de losimaginarios de la inestabilidad y la precariedad temporal, física y emocional.
Peformance Analysis of Automatic Voltage Regulator (AVR) as a 3-Phase AC Generator Excitation Voltage Supply Controller
Authors: Liliana Liliana
Published: December 2022

Tegangan yang dihasilkan oleh generator akan senantiasa berubah karena beban yang terus berfluktuasi. Tegangan keluaran harus dijaga agar tetap konstan dalam  nilai yang diinginkan untuk menjamin pasokan daya keluaran generator agar dapat memenuhi kebutuhan beban.,  maka dibutuhkan alat yang disebut dengan AVR (Automatic Voltage Regulator). AVR bertujuan mengatur besarnya arus eksitasi yang dipasok ke generator dan besarnya arus eksitasi berbanding lurus dengan besarnya tegangan yang dihasilkan oleh generator. Penelitian ini bertujuan untuk menganalisis unjuk kerja AVR dalam menjaga kestabilan tegangan dan daya keluaran generator. Pemantauan kinerja AVR yang dipasang pada generator dilaksanakan selama 31 hari. Hasil pemantauan dan analisis setelah generator dipasang AVR dapat diketahui bahwa tegangan keluaran berada dalam kestabilan dengan variasi nilai antara 11,59 kV sampai dengan 11,8 kV sedangkan daya keluaran generator juga masih dalam kestabilan dengan variasi nilai antara 38,1MW sampai dengan 38,3 MW.

 

Kata Kunci : Generator, Automatic Voltage Regulator, arus eksitasi, daya keluaran, tegangan keluaran
CLEAROSO: A Cleaning Robot for the Solar Panels
Authors: Deshmukh Nikheel N. , Chitale Devendra , Kamath Raghavendra C.
Published: December 2022

Non-renewable power sources being sustainable have a major impact on controlling global warming. Solar energy is one of the prominent non-renewable energy sources that has been increasingly utilized in recent years to generate solar power using solar panels. The accumulation of dust (also known as soiling) on the surface of solar panels reduces the quantity of sunlight reaching the solar cells beneath, lowering the efficiency of the solar panel. To fully utilize their specified capacity, they must be cleaned regularly, often with water. Cleaning solar panels, especially when large in numbers, consumes much time. The cleaning of solar panels has become complex, complicated, and ultimately costly due to the growing water shortage problem in most parts of the world. The current study also suggests the development of a solar panel cleaning robot to address the issues connected with the traditional technique of solar panel cleaning. In the present work, an appropriate methodology was developed to balance the robot on the solar panel, having the ability to clean the panels with no wastage of water and no damage to the panels. Since the proposed cleaning process is automated, cleaning time was significantly reduced, and the usage of water and the effort of the personnel was eliminated. Several cleaning trials were conducted using the robot, and the result indicated an increase in the overall efficiency of the solar panel cleaning process.
The Swiss Primary Ciliary Dyskinesia registry: objectives, methods and first results
Authors: Goutaki Myrofora , Eich Marc O. , Halbeisen Florian S. , Barben Juerg , Casaulta Carmen , Clarenbach Christian , Hafen Gaudenz , Latzin Philipp , Regamey Nicolas , Lazor Romain , Tschanz Stefan , Zanolari Maura , Maurer Elisabeth , Kuehni Claudia E. , For the Swiss PCD Registry (CH-PCD) Working Group
Published: December 2022

Primary ciliary dyskinesia (PCD) is a rare, hereditary, multiorgan disease caused by defects in the structure and function of motile cilia. It results in a wide range of clinical manifestations, most commonly in the upper and lower airways. Central data collection in national and international registries is essential to studying the epidemiology of rare diseases and filling in gaps in knowledge of diseases such as PCD. For this reason, the Swiss Primary Ciliary Dyskinesia Registry (CH-PCD) was founded in 2013 as a collaborative project between epidemiologists and adult and paediatric pulmonologists. We describe the objectives and methodology of the CH-PCD, present initial results, and give an overview of current and ongoing projects.
The registry records patients of any age, suffering from PCD, who are treated and resident in Switzerland. It collects information from patients identified through physicians, diagnostic facilities and patient organisations. The registry dataset contains data on diagnostic evaluations, lung function, microbiology and imaging, symptoms, treatments and hospitalisations.
By May 2018, CH-PCD has contacted 566 physicians of different specialties and identified 134 patients with PCD. At present, this number represents an overall 1 in 63,000 prevalence of people diagnosed with PCD in Switzerland. Prevalence differs by age and region; it is highest in children and adults younger than 30 years, and in Espace Mittelland. The median age of patients in the registry is 25 years (range 5–73), and 41 patients have a definite PCD diagnosis based on recent international guidelines. Data from CH-PCD are contributed to international collaborative studies and the registry facilitates patient identification for nested studies.
CH-PCD has proven to be a valuable research tool that already has highlighted weaknesses in PCD clinical practice in Switzerland.

Trial registration number
NCT03606200
Health-related quality of life and stress-related post-transplant trajectories of lung transplant recipients: a three-year follow-up of the Swiss Transplant Cohort Study
Authors: Bleisch Barbara , Schuurmans Macé M. , Klaghofer Richard , Benden Christian , Seiler Annina , Jenewein Josef
Published: December 2022

BACKGROUND
Lung transplantation (LTx) provides a viable option for the survival of end-stage lung diseases. Besides survival as a clinical outcome measure, health-related quality of life (HRQoL) and psychological distress have become important outcomes in studies investigating the effectiveness of LTx in the short- and long-term.

OBJECTIVE
To assess and compare HRQoL trajectories of patients after LTx prior to and over a follow-up period of three years post-transplant, and to identify differences regarding distress, HRQoL and patient-related outcomes.

METHODS
In this longitudinal study, 27 lung transplant recipients were prospectively examined for psychological distress (Symptom Checklist short version-9; SCL-K-9), health-related quality of life (EuroQOL five dimensions questionnaire; EQ-5D), depression (HADS-Depression scale), and socio-demographic and medical outcomes at two weeks, three months, six months and three years following LTx. Additionally, potential outcome-related predictors for LTx-outcomes at three years post-transplant were assessed. Data were collected in accordance with guidelines set by the STROBE (strengthening the reporting of observational studies in epidemiology) statement.

RESULTS
Lung transplant recipients showed the most pronounced improvements in HRQoL and reduction in psychological distress between two weeks and three months post-transplant, with relative stable HRQoL and distress trajectories thereafter. The most important predictors of poor somatic health trajectories over time were the pre-transplant disease severity score and the pre-transplant HADS-Depression score. In addition, idiopathic pulmonary fibrosis (IPF) and pre-transplant extracorporeal membrane oxygenation (ECMO)-use predicted poorer survival, while cystic fibrosis was associated with better survival three years post-transplant.

COMCLUSION
Lung transplantation yields significant survival and HRQoL benefits, with its peak improvement at three months post-transplant. The majority of patients can preserve these health changes in the long-term. Patients with a worse HRQoL and higher psychological distress at six months post-transplant tended to have a poorer survival post-transplant. Other risk factors for poorer survival included IPF, pre-transplant ECMO-use, pre-transplant symptoms of depression, high pre-transplant disease severity and worse somatic disease severity trajectories. The majority of LTx-recipients were unable to work due to illness-related reasons.
Cardiac involvement in Churg-Strauss syndrome mimicking acute coronary syndrome
Authors: Rigamonti Fabio , De Benedetti Edoardo , Letovanec Igor , Rosset Antoine , Chizzolini Carlo
Published: December 2022

Churg-Strauss syndrome (CSS) is a rare multisystemic disorder of unknown origin and cardiac involvement is one of the most serious manifestations of the disease, accounting for approximately one-half of deaths attributable to CSS. Cardiac manifestation can be acute and mimic acute coronary syndrome (ACS). In this setting checking the blood leucocyte count can reveal hypereosinophilia and lead to a diagnosis of CSS.
How Necessary Is Empirical Antibiotic Therapy in COVID-19 Patients before ICU infections develop? An Observational Study
Authors: MENEKSE Sirin , DENİZ Secil
Published: December 2022

Introduction: There have been few studies reporting empirical antibiotic use in Covid-19 patients, particularly in those admitted to the intensive care unit (ICU). This study evaluated empirical antibiotic use in patients admitted to the ICU with Covid-19
Methods: This two-center retrospective study included 79 consecutive patients who were admitted to the ICU due to Covid-19 infection between October 1 and December 31, 2020, and received empirical antibiotics. The patients were classified into two groups: those who developed ICU infections after 48 hours of ICU admission despite empirical antibiotic therapy (Group 1), and those who received empirical antibiotic therapy during the ICU stay, but were free of ICU infections (Group 2).
Results: In Group 1, 37 patients (46.8%) developed ICU infections after a median of 12 days (IQR 5.5-15.5) of ICU stay. The cumulative antibiotic use until the detection ICU infections was 395 antibiotic days corresponding to 1070 DOTs/1000 hospital days. The median antibiotic use was 9 days (IQR 4-15.5). In Group 2, 42 patients (53.2%) received empirical antibiotic therapy for a median of 5 ICU days (IQR 3-8.3) and for a total of 256 antibiotic days (1051 DOTs/1000 hospital days). Twenty–three patients received empirical antibiotic therapy during the entire ICU stay. The median ICU stay was 6.5 days (IQR 4-10) and the median antibiotic use was 5 days (IQR 3-8.2).
Discussion and Conclusion: Our findings are alarming and raise doubt about the potential role of antibiotics in the initial therapy of Covid-19 patients at the time of ICU admission and suggest the need to narrow or tailor antibiotic use based on clear laboratory and radiologic indications.
Evaluation of the Relationship between Psoas: lumbar Vertebral Index and Serum Inflammatory Markers in Elderly Patients
Authors: KARA Mustafa , BAYRAM Serkan
Published: December 2022

Aims: We investigated the relationship between novel inflammatory parameters and Psoas:lumbar vertebra index (PLVI) in elderly patients and assessed which parameter would have a stronger relationship with sarcopenia.

Method: We retrospectively evaluated the prospective recorded data of patients aged over 65 who were admitted to our hospital between June 2019 and September 2020. We used the PLVI calculated using the cross-sectional area of the L4 vertebral body and the left and right psoas muscles by using computer tomography, to assess central sarcopenia. Laboratory tests were evaluated, which consisted of white blood cell (WBC), albumin, neutrophils, lymphocytes, hemoglobin, C-reactive protein, platelets, Neutrophil to lymphocyte ratio (NLR), and platelet to lymphocyte ratio (PLR).

Results: Six hundred and eleven patients (351 females and 260 males) with a mean age (and standard deviation) of 73.7 ± 6.8years were included in this study. Statistically significant relationships were found between age and PLVI. Patient age was also significant correlated with albumin, platelets, lymphocytes, hemoglobin, and NLR. Statistically significant relationships were found between gender and PLVI. Gender was also significant correlated with albumin, platelets, lymphocytes, hemoglobin, and NLR. Psoas:lumbar vertebral index was significantly correlated with platelets and hemoglobin.

Conclusion: According to our results, the inflammatory panel, which included NLR, PLR, CRP, and WBC, were not significantly associated with low PLVI in elderly Turkish people. Central sarcopenia was detected especially in elderly and female participants. Although the inflammatory markers were not associated with sarcopenia, platelet and hemoglobin levels were observed to be significantly correlated with sarcopenia.
Exploring the Effects of Lucilia sericata Larvae on Biofilm-forming Bacteria in Wounds
Authors: EGRİBEL Merve , SİREKBASAN Serhat , ÇAKAN Hüseyin , POLAT Erdal
Published: December 2022

Objective: Biofilm-induced chronic wound infections are among the most significant causes of treatment failures. Healing chronic wounds with biofilm is a major issue worldwide due to high costs and adverse effects on patients. In this study, we aimed to investigate the impacts of Lucilia sericata larvae on biofilm-forming bacteria in chronic wounds.

Method: We recruited 30 patients applying to Istanbul University-Cerrahpasa, Traditional and Complementary Medicine Research and Application Center, Wound Healing Unit, between December 2019 and March 2021. We obtained swab cultures before and immediately after applying Larval Debridement Therapy (LDT). After identifying isolated bacteria, we examined all agents by susceptibility and biofilm formation.

Results: While isolating only a single bacterial genus/species in 19 patients, we could detect more than one bacterial genus/species in 11 of them. Moreover, we observed biofilm formation in bacteria isolated from 21 patients, but it was not the case in bacteria grown in 9 patients. Following LDT, we discovered that the biofilm layer on wounds was removed in a short time (two to three sessions).

Conclusion: Although many methods are adopted in healing chronic wounds with biofilm formation, they often remain ineffective. The therapy with L. sericata larvae, a simple and effective method, may promote rapid healing of biofilm-forming wounds.
The Long-Term Results Of Suture And Graft Techniques Used To Increase Tip Projection and Rotation In Open Technique Septorhinoplasty
Authors: CAN Sermin , BAYINDIR Tuba , ERDEM Tamer , TOPRAK Serdar Ferit
Published: December 2022

Background: In this study, we aimed to evaluate the long-term results of suture and graft techniques used to increase tip projection and rotation in Open Technique Septorhinoplasty.

Methods: In this study, the data of 89 patients who underwent Open Technique Septorhinoplasty were analysed retrospectively. The patients were divided into groups 1,2,3,4 and 5 according to the suture and graft techniques used. Preoperative and postoperative photographs of all patients included in the study at the 1st, 3rd, 6th, 12th, 36th and 60th months were analyzed. To measure and compare these techniques, tip projection and rotation losses were measured on all photographs using a computer program called Imagej.

Results: A statistically significant increase was found between the preoperative mean Nasolabial Angle (NLA), Type Angle (TA), Byrd–Hobar Method (BHM) and Nasofacial Angle (NFsA) measurement values and the measurement values at 36th months postoperatively in Groups 1 and 4 (p < 0.05). In Group 2, a statistically significant increase was found between preoperative mean NLA, TA and BHM measurement values and postoperative 36th month measurement values (p < 0.05). In group 1 only, there was a statistically significant difference between the preoperative mean TA, BHM, Simons Method (SM), Goode Method (GM) and Powell-Modified Baum Method (PMBM) measurement values and the postoperative measurement values at 60th months (p < 0.05).

Conclusions: Our results showed that suture techniques were more effective on projection and rotation than graft techniques in the long term.
Nerve Conduction Studies in post COVID-19 Patients Without Neuropathic Complaints
Authors: ÖZDOĞRU Derya , ERDEM Miray , FİDANCİ Halit , ARLİER Zülfikar
Published: December 2022

Objective: Neurological diseases related to the coronavirus disease (COVID-19) are known. In this study, it was aimed to find out whether the peripheral nervous system is affected in patients with a history of COVID-19 (post COVID-19) without neurological findings.

Methods: Patients with a positive history of the nose swap polymerase chain reaction test and clinical signs of COVID-19 (post COVID-19 patients), and controls who have not had COVID-19 were included in this retrospective cohort study. Neurological examinations of post-COVID-19 patients and controls should have been normal. Nerve conduction studies including median, ulnar, posterior tibial and peroneal nerves were applied to all participants.

Results: Thirty controls (14 males, 16 females) and 32 post COVID-19 patients (19 males, 13 females) were included. The mean ages of postCOVID-19 patients and controls were 49.7±10.9 and 38.0±7.6 years, respectively. Age and gender were not different between post COVID-19 patients and controls (p=0.122, p=0.316122). Nerve conduction study findings of median, ulnar, posterior tibial and sural nerves were not different between the two groups (p>0.05).

Conclusion: This study may show that routine nerve conduction studies are not subclinically affected in post COVID-19 patients without neurological findings.
Vaccine Hesitation in Parents of Children with Food Allergy
Authors: KAN Ahmet , TÜRE Mehmet , YILMAZ Kamil , AKIN Alper , KARTAL Gülşah , ŞEN Velat
Published: December 2022

Objective: The term vaccine hesitation means “rejection or delay of vaccines despite the availability of vaccine services”. Parents may delay the vaccination of their children when their children have a history of food allergies. The present study aims to evaluate the factors about vaccine hesitancy of parents with food allergic children.

Methods: A cross-sectional survey research, created by the researchers, was conducted to the parents of children who were already followed up with food allergy by the pediatric allergy department.

Results: The parents of 190 children with a median age of 24 (2-60) months who were followed up for food allergy were included in the study. The median follow-up period of the patients was 15.5 (4–160). Forty-four (23.1%) participants had delayed at least one vaccination of their children due to food allergy in the past. The most common vaccine hesitancy was toward the measles-mumps-rubella vaccine. The study also found that there were more delays in vaccination in children with egg allergy (100%) than in those without egg allergy (75.3%) (p = 0.01). As a result of our study, it was determined that the most frequent information about vaccination was obtained from doctors (89.5%)

Conclusions: It was understood that a substantial proportion of parents with food allergic children had vaccine hesitancy in the past. Families obtaining complete and accurate information about food allergy and vaccine interactions, especially from the health system, will prevent unnecessary delay due to vaccine hesitations.