bluuebunny/crossref_metadata_2025 huggingface dataset:
The Impact of Coffee Certification on the Economic Performance of Indonesian Actors
Authors:   ICIS/ Maastricht University, Astuti Esther Sri , Kemp Rene ,   ICIS/ Maastricht University, Offermans Astrid ,   International Centre for Integrated Assessment and Sustainable Development (ICIS), Maastricht University, The Netherlands, Corvers Ron ,   ICIS/ Maastricht University
Published: March 2023

The prevailing assumption among consumers in the North is that buying certified coffee contributes positively to the economic performance of Southern actors, particularly smallholder farmers. In this paper we examine the impact of coffee certification on the economic performance of Indonesian actors (farmers, traders, exporters, and Indonesian roasters) and analyze how economic rent is distributed among them. Questionnaire results and in-depth interviews revealed that all Indonesian actors benefit financially from certification on a price per kilogram measurement, but the differences between certified and non-certified actors are small. The paper finds that the economic rent from certification is distributed very unequally along the coffee value chain where roasters receive 95.46 percent (Robusta) and 83.66 percent (Arabica) of the total economic rent (retailers excluded). Overall, farmers enjoy a small direct benefit from certification in the form of a higher price per kilogram for their coffee, and possible benefits regarding increased productivity and quality resulting from training and advice in crop management.
Book Review | Rice: Global Networks and New Histories edited by Francesca Bray, Peter A. Coclanis, Edda L. Fields-Black, and Dagmar Schäfer
Authors:   Food and Agriculture Organization of the United Nations, Italy, Dawe David
Published: March 2023

A great book to read for all students of food and agriculture. It is a history book above all else, but like most good history, many of the stories it contains are highly relevant to today’s policy debates
Climate-Smart Agriculture: Do Young People Care?
Authors:   Philippine Rice Research Instiitute, Manal IV Jaime , Saludez Fredierick ,   Development Communication Division, Philippine Rice Research Institute, Layaoen Myriam ,   Development Communication Division, Philippine Rice Research Institute, Pagdanganan Argie ,   Development Communication Division, Philippine Rice Research Institute, Berto Jayson ,   Development Communication Division, Philippine Rice Research Institute, Frediles Christian ,   Development Communication Division, Philippine Rice Research Institute, Balmeo Katherine ,   Development Communication Division, Philippine Rice Research Institute, Villaflor Jennifer ,   Development Communication Division, Philippine Rice Research Institute
Published: March 2023

This paper is about the information-seeking and information-sharing behavior on climate-smart agriculture (CSA) of high school students who participated in the Infomediary Campaign in 2014. This seeks to answer five research questions: (1) What are the indicators that searching and sharing of information by the infomediaries transpired? (2) What are the characteristics of infomediaries who are most likely to share information on CSA? (3) What sort of information can be competently shared by high school students? (4) How is information transferred from the information source (PhilRice) to the farmers? (5) What evidence suggests that information transferred was put to good use by the intended recipients? A survey (N=388) was conducted among eight randomly selected schools, from the pool of 108 schools, nationwide. Focus group discussions, individual interviews, and participant observation were likewise conducted. The Stakeholder Theory and Livelihoods Approach were combined to unpack the findings in this research. Results show that females are more likely to share information than males (p=.071). Land tenurial status (p=.430) and familial background (p=.052) do not seem to influence the information-seeking behavior of young people. Information that is easy to understand and reinforced elsewhere was shared often by students as compared with more complex ones. Several pathways were generated in documenting the infomediation process on CSA with the schools as the nucleus of agricultural information. These are: (1) PhilRice to farmers, (2) PhilRice to teachers to farmers, and (3) PhilRice to teachers to students to farmers.
Determinants of Demand for Fertilizer: A Case for India
Authors:   UWF Center for Research and Economic Opportunity University of West Florida, Pensacola formerly in Emporia State University, School of Business, Chakraborty Kalyan
Published: March 2023

In India, agriculture contributes 14 percent to GDP and provides subsistence to two-thirds of the population. One of the top priorities of the Indian government is to provide food security to more than 1.25 billion people. Hence, increasing farm productivity is viewed as a primary goal for the government. Agricultural growth, with its forward and backward links to the industry and service sectors, is directly linked to India’s economic growth. Using national time-series data, this study estimates a demand function for fertilizer using a simple linear regression model and explores the relationship between demand and various non-price factors. The results from the regression analysis found that non-price factors are more important than the price of fertilizer in determining fertilizer demand. This study recommends that to increase agricultural output, government subsidy policies need to be geared toward the use of balanced nutrients for improving soil conditions, at the same time, provide an incentive to fertilizer manufacturing firms to develop new environmentally-sustainable products for agriculture.
Yield and Income Effects of Ecologically-based Rodent Management in Mekong River Delta, Vietnam
Authors:   Faculty of Economics and Rural Development, Vietnam National University of Agriculture, Trau Quy, Gia Lam, Hanoi City, Vietnam, Ninh Ho Ngoc , Aragon Corazon ,   Department of Agricultural Economics, College of Economics and Management, University of the Philippines Los BaÃ±os, Laguna 4031, Philippines, Palis Florencia ,   Department of Social Sciences, University of the Philippines Los BaÃ±os, Laguna 4031, Philippines, Rejesus Roderick ,   Department of Agricultural and Resource Economics, North Carolina State University, Raleigh, NC 27695-8109, Singleton Grant ,   International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines
Published: March 2023

Regression-based strategies along with propensity score matching (PSM) were used to assess the farm-level economic impact of community action (CA) strategies associated with ecologically based rodent management (EBRM). The paddy yield and real net income of rice farmer beneficiaries of the EBRM approach in An Giang Province, Mekong River Delta, Vietnam, were analyzed using panel data from 151 rice farmers. PSM along with the difference-indifference framework using the fixed-effect approach were found to be the most appropriate methods to evaluate the farm-level economic impact of the adoption of the CA strategies. The EBRM through CA did not replace what the farmers were doing, but rather built on their practices and incorporated a scientific basis by encouraging farmers to work together at key times of a cropping season. In terms of labor use for rodent control, CA only entailed an additional 0.3 man-days/ha for every CA. Normally, for a 40-hectare (ha) rice field, around 30 persons participated in each CA including men, women, and children. With two to three times done in a season, a total of 1 man-day/ha is as an additional labor for the whole season. The adoption of the EBRM through CA had a significant and positive impact on paddy yield and real net income of rice farmers. The mean paddy yield increased by 0.43-0.45 ton per ha and real net income of the beneficiaries increased by VND1.16–1.19 million/ha (approximately USD65-67/ha). These findings imply that the adoption of the CA strategies in rodent pest management as part of EBRM may not only have partly contributed to food security and increased household income of the rice farmer-beneficiaries but also to environmental improvement in these communities.
Recent Changes in the Bioeconomics of Lobster and Mud Crab Mariculture in Vietnam
Authors:   University of Western Australia, Petersen Elizabeth , Glencross Brett ,   University of Stirling, Phuong Truong Ha ,   Research Institute for Aquaculture No 3, Tuan Vu An ,   Research Institute for Aquaculture No 3, Tuan Le Anh ,   Nha Trang University
Published: March 2023

The purpose of this paper is to compare trends in the bioeconomics of tropical spiny lobster and mud crab mariculture in Vietnam between 2010 and 2013 using survey processes and bioeconomic analysis. Results show that tropical spiny lobster and mud crab grow-out mariculture remained strongly economically viable in Vietnam despite significant changes in the bioeconomic environment over a three-year period. The most notable changes to the grow-out of tropical spiny lobster were a significant decrease in harvest biomass due to decreased stocking densities and poor feeding techniques. Findings highlight the potential for improvement in stocking and feeding regimes in Vietnam’s lobster and crab mariculture industry, which is likely to have positive environmental and economic benefits. There remains significant scope for increasing the size and quality of the seed used and, in the case of crabs, improvements in availability and affordability of hatchery-produced seed. Similarly, there remains significant scope for optimization of feeding rates and improvement of feeding quality.
Assessment of Neighborhood and Spillover Effects on Technical Efficiency of Irrigated Rice Farmers
Authors:   Social Sciences Division (SSD), International Rice Research Institute (IRRI), Villanueva Donald , Pede Valerien ,   Social Sciences Division (SSD), International Rice Research Institute (IRRI), Sumalde Zenaida ,   University of the Philippines Los Banos (UPLB), Garcia Yolanda ,   University of the Philippines Los Banos (UPLB), Rodriguez U-Primo ,   University of the Philippines Los Banos (UPLB)
Published: March 2023

Neighborhood and spillover effects on technical efficiency were investigated among 270 randomly drawn farming households from 18 irrigated villages in Guimba, Nueva Ecija, Philippines, using a two-step procedure. In the first stage, stochastic frontier production function was used to estimate farmer’s technical efficiency; in the second stage, appropriate spatial econometric models of technical efficiency were estimated. Spatial econometric models adopted in this study detected spatial dependency on technical efficiency in the error term of the spatial model across seasons and locations, which can be associated with unobserved factors that similarly influence farmers’ technical efficiencies at the same time. Farm size, income, and regular contact and consultation with agricultural technicians were found to significantly affect technical efficiency. Results of the spatial regression show that owner-cultivator status and loamy soil are associated with increased technical efficiency. The local government of Guimba can use findings of this study in formulating agricultural policies and implementing essential interventions to improve the technical efficiency of rice farmers.
Prevalencia de trastornos musculoesqueléticos en la empresa de calzado Getty S.A.C. - Trujillo 2023
Authors: Boy Vasquez Enrique Jannier , Catalán Corcuera César Humberto , Ruiz Ulloa Luis Rafhael
Published: March 2023

El propósito de este trabajo de investigación fue determinar la prevalencia de trastornos musculoesqueléticos de los trabajadores de la empresa Gretty. Método. Estudio descriptivo, cuantitativo y transversal. Participaron 6 trabajadores del área de fabricación a los que se le aplicó el cuestionario nórdico de Kuorinka y se realizó una evaluación postural mediante la metodología REBA. Resultados. La prevalencia de los trastornos musculoesqueléticos por segmento fue en mayor porcentaje principalmente en la región del hombro (24%), seguido del cuello y muñeca (19%). El predominio de la afección de fue más en el lado derecho, y según la metodología REBA, se obtuvo niveles de riesgo medio y alto. Conclusión. Existe una elevada prevalencia de trastornos musculoesqueléticos en los trabajadores del área de fabricación de calzado, principalmente en el aparato locomotor (miembros superiores); y los puestos de trabajos con mayores niveles de riesgo fueron armado 1, pegado, perfilado y alistado, donde se determinó una intervención urgente. Finalmente, se halló que la zona más afectada fue en el lado derecho del cuerpo.
Parque nacional el Veladero una reflexión de su vulnerabilidad
Authors: Tapia Guillen Franco Ernesto , Carbajal Avila Jazmin , Castellanos Meza Carmelo , López Ruiz Blanca Estela
Published: March 2023

El parque nacional El Veladero es un área natural protegida en el municipio de Acapulco de Juárez Guerrero, México. La presente reflexión obedeció a una investigación de tipo básica descriptiva, con enfoque mixto; cualitativamente se analizaron los factores sociales que llevaron a la invasión de terrenos en el área protegida y de forma cuantitativa para comparar estadísticamente el impacto al ambiente. De 1980 al 2011 se perdió el 13.52 por ciento de la extensión de su área, debido a las invasiones, conformadas por 489 hectáreas que representan 13 polígonos. Es innegable la degradación y pérdida de gran parte de su ecosistema, así como la vulnerabilidad de los asentamientos irregulares. Se requiere una coordinada participación de los actores sociales, a través de las autoridades municipales para detener la invasión, garantizar su restauración y conservación.
Hacia un modelo de evaluación de sistemas de alerta temprana para actividad volcánica: algunas reflexiones conceptuales
Authors: Estrada García Edgar Riquelme
Published: March 2023

El estudio y la aplicación de principios teóricos y criterios combinados con un acucioso estudio de campo permitieron evaluar la eficiencia de la implementación del Sistema de Alerta Temprana (SAT) en la localidad de Penipe, Ecuador. El arsenal teórico contenido en la Sociología del Riesgo dotó al autor de un marco útil y claro para abordar el objeto de estudio. La medición de variables como el liderazgo, la comunicación y capacitación contribuyeron a identificar las fortalezas, amenazas y vulnerabilidades en la puesta en práctica del referido sistema, y a construir las bases de la propuesta conceptual. Dentro de las recomendaciones, se encuentran el fortalecimiento del liderazgo en la comunidad, las actividades de capacitación - especialmente medidas preventivas – así como la modernización de los equipos de monitoreo.
Análisis fisicoquímico de miel de tres especies de abejas en el Oriente de Honduras
Authors: Torres Mejía Fredy , Torres Mejía Juan Alexander , Bautista Cruz Marcos Donaly , Pérez Licona Elvin
Published: March 2023

Se realizó el análisis fisicoquímico de miel de tres especies de abejas en el departamento del Paraíso, Tetragonisca angustula, Apis mellifera, y Melipona beecheii en Honduras, donde se caracterizaron los grados Brix, acidez, humedad y la densidad relativa de la miel de  cada especie; según el análisis de varianza tenemos que existen diferencias significativas en las cuatro variables fisicoquímicas evaluadas en la miel de las tres especies de abejas (P <0.05), y de acuerdo al análisis de separación de medias de Duncan, se denota que los tres promedios de la miel observadas no son homogéneas a un nivel de significancia del 0.95 em las cuatro variables evaluadas. La Tetragonisca angustula es la miel más ácida con 3.26 de pH, y es la que más humedad tiene con 28.72%, además es la miel más transparente con un color claro, y denotan ausencia de espuma y cristales. La Apis mellifera tiene los grados Brix mas altos 85.603, y tiene la acidez mas baja con 3.838, por lo que la miel es más dulce, además tiene menor contenido de humedad con 13.027%, y tiene la densidad relativa más alta con 1.428, es la miel menos transparente y se denotan ausencia de espuma y cristales. En lo que corresponde a la Melipona beecheii es la miel con menor grados Brix con 68.9, y es la miel con la densidad relativa más baja, con 1.382, su aspecto es transparente oscuro, y no presenta cristales ni espuma. La apicultura de especies nativas mejora la calidad de vida de todo el ecosistema y ayuda a todos los sistemas de producción agricultura, y dado a que ha sido toda una tradición milenaria en nuestra Región, esta es parte del patrimonio biocultural de Mesoamérica.
El impacto positivo del outsourcing contable en las empresas comerciales en Trujillo – Perú
Authors: Pastor Quispe Yosimar Isaías , Sevilla Gamarra Marco Antonio , Arias Pereyra Guillermo Paris
Published: March 2023

El articulo revisión literaria científica por nombre lleva el impacto positivo del outsourcing contable en las empresas comerciales en Trujillo – Perú, fue no experimental, descriptiva. Este tema tiene un rol muy importante que ha evolucionado desde hace mucho tiempo, que ha generado que las empresas han sobresalido por el método, outsourcing, no es más que un servicio de tercerización o subcontratación. Dentro de ello hemos explicado en la metodología de qué manera hemos elaborado y como hemos encontrado la información con fuentes confiables y así para poder desarrollarlo, seguidamente en los resultados se ha mencionado lo que como es el impacto positivo, que hallazgos se ha realizado, los beneficios, minimización de gastos y como es su comportamiento del outsourcing contable en las empresas comerciales de Trujillo; esto es en base de nuestros objetivos generales y específicos.
Determinantes del nivel de eficiencia de la educación Matemática en entorno rural de Ñeembucú: caso nivel medio del colegio nacional Tacuruty – Cerrito
Authors: Sanabria Villalba Mariela , López Enciso Derlis Javier
Published: March 2023

La investigación identificó las determinantes de la eficiencia de la formación matemática de la Educación Media del centro educativo rural: Colegio Nacional Tacuruty – Cerrito del año 2021. Se analizaron variables como: elementos intervienen en la formación matemática, práctica pedagógica adoptada por un docente rural y elementos que materializan la trasformación de la práctica pedagógica. Se trabajo con una metodología de nivel descriptivo, de diseño no experimental de corte trasversal con enfoque cuantitativo. Se utilizó como técnicas de recolección de datos la entrevista y la encuesta. La población estuvo conformada por 65 alumnos del nivel medio y 3 docentes de la asignatura de matemáticas de dicho nivel.  Los resultados permiten concluir que las determinantes del nivel de eficiencia de la educación Matemática en entorno rural de Ñeembucú, tomando como referencia el caso del Nivel medio del Colegio Nacional Tacuruty – Cerrito, son los elementos físicos, socioambientales y culturales, las prácticas pedagógicas óptimas que se traducen en elementos que materializan la trasformación de la práctica pedagógica del docente en el área de matemática. Se concluye que, pese a las características propias de a educación rural, esta no ve influenciada en la formación de los estudiantes del nivel medio de la institución objeto de estudio.
CLONED OR HIJACKED JOURNALS: A FORM OF ACADEMIC CYBERCRIME
Authors: Kumar Akhilesh
Published: March 2023

While entire academic world was busy on the debate of predatory or low-quality journals and publications, a severe academic form of cybercrime has emerged as ‘Hijacked Journals/Cloned Journals, which is more severe than the predatory one. Many such cloned journals are identified but yet many might have remained. Cloned journals posed a challenge not only towards a scientific publication but also towards publication industry and diluted the science. This case study is carried out to investigate the fraudulent behavior and features of cloned and hijacked journals. A journal ‘Adalya’ was selected from the list of cloned journals available on the website of UGC. An observational study has been carried out of home page of the original ‘Adalya’ and its cloned variant ‘Adalya Journal’. It was observed that cloned journals could be identified easily if a researcher is aware. Such cloned websites seem catchier but with unclear information, publishes content beyond their scope or multidisciplinary in nature, provides no clear physical address and location of publication, attracts the author with a promise to publish their article in couple of hours, issues publication certificate, provides fake digital object Identifiers (DOIs), websites not rich and have no clear information. The easiest way to get rid from such fraudulent cloned journals is that to verify the records of journal on ISSN Portal, SCOPUS and Clarivate Master Journal List As on country has full control over Internet of Things, its better for authors to save themselves from such cloned journals by keeping them updated about it.
A conceptual approach to the creation of an information system of industry analytics for the fleet
Authors: Kazmina Olesya A. , Kazmin Sergei A. , Pyshkina Nadezhda Y. , Kholopova Anna A.
Published: March 2023

The article presents a description of the concept of creating an information system for industry analytics for the fleet. The system was developed on the basis of the analytical platform QlikView. The purpose of creating an information system of industry analytics for the fleet is the operational preparation of analytics on fleet indicators in the required sections based on the analysis of large amounts of data in a single space. The need to create such a system is associated with the need for operational management decision-making based on a variety of analytics and regular monitoring of industry indicators, which is associated with time-consuming processing and analysis of large amounts of data, visualization of indicators in the required sections. The use of the developed system will optimize the current business processes of enterprises of the industry at any level.
Aspects of Designing the Ice-Resistant Drilling Platform to be Operated in the Taz Bay of the Gulf of Ob
Authors: Blagovidova Irina L. , Ivanova Olga A. , Babak Aleksandra S. , Rodkina Anna V.
Published: March 2023

Prospects for presence of gas production areas of the Taz Bay of the Gulf of Ob have been determined by the authors of the paper. Approaches to determining the optimal ice-resistant shape of the platform support base are considered. Scenarios of extreme ice impacts on structures operated in the Gulf of Ob have been determined. An assessment of global actions to occur during interaction of platforms with ice features was given, which directly affects the choice of the platform design and the way of securing it on the seabed. A calculation of global ice actions, determined by both domestic and foreign procedures, was performed. The obtained results of global ice actions, determined by use of several procedures prescribed by the main regulatory documents, were analyzed in various scenarios of the “platform/ice features” interaction. The prospects of further research were investigated.
Wheeled vessel dynamics at change of heading
Authors: Grosheva Ludmila S. , Plyushchaev Valery I.
Published: March 2023

Manoeuvring of a wheeled vessel is carried out by changing the ratio of rotation speeds of propeller wheels located along the sides in the stern of the vessel. The article on the basis of the mathematical model of the wheeled vessel considers the dynamic characteristics of the vessel-control system complex when changing the course of the vessel. It is proposed to include sections of own movements of the vessel-control system complex (movements along which would be carried out without external influences) when synthesizing the trajectory of movement when changing course. Described is an algorithm for controlling the change in the ship's heading using its own movements of the ship control system complex. The results of mathematical modeling of the dynamic characteristics of the complex are given when implementing the algorithm for the transition of the vessel to a new course using the proposed approach.
Methodology for assessing the comparative efficiency of cargo transportation by water transport
Authors: Nikulina Marina V. , Platov Juri I.
Published: March 2023

The article is aimed at the implementation of the tasks set by the strategy for the development of inland water transport, and increasing its role through the optimal distribution of cargo transportation between modes of transport on the basis of strategic management and regulation by state bodies. To this end, a methodology for assessing comparative efficiency for strategic planning and current regulation is proposed, taking into account the interests of three subjects: the transport system, the consumer of its services (cargo owners) and the national economy (society) as a whole. Two groups of indicators are given: cost and physical, reflecting the energy efficiency and environmental friendliness of transportation. Cost indicators are developed on the basis of the previously used costs, which differ in the content of the efficiency coefficient of capital costs or fixed assets. The novelty of this coefficient lies in determining the size of the rate of return, both for simple and extended reproduction, taking into account the depreciation rate and changes in the value of cash flows during the life cycle by discounting. Therefore, the value of the reduced costs is treated as the cost of transportation. Based on the proposed cost and physical indicators, calculations are given for three types of transport, showing the efficiency of the proposed approach, an analysis of the results is given, and preliminary conclusions are drawn about the adequacy of the approach.
Development of river transport infrastructure: strategic objectives, problems and prospects
Authors: Dreiband Dmitry V. , Korshunov Dmitry A. , Nichiporuk Andrey O.
Published: March 2023

The article examines the current state of inland water transport infrastructure. An analysis of the achieved indicators on the volume of cargo transportation and cargo turnover was carried out, a comparison with foreign countries and a forecast of the development of transportation according to these indicators were presented. Special attention is paid to the issues of financing and maintaining the infrastructure of inland water transport. The comparison on the track component with ground, competing modes of transport (rail and road) showed that budget investments in the infrastructure of inland water transport are more efficient and rational. However, this was not reflected in the targets of the Transport Strategy of the Russian Federation for changing the proportions of the distribution of freight traffic in the country's transport complex and increasing funding for the development of water transport infrastructure. The authors of the article identified a number of problems in the field of development of inland water transport, which are of an infrastructural nature, and also made proposals for their elimination.
Cobb-Douglas production function for evaluating seaport activity
Authors: Botnaryuk Marina V. , Ksenzova Natalya N.
Published: March 2023

The purpose of the article is to study the dependencies of factors and develop a model of the production and economic activity of the seaport based on the Cobb-Douglas production function. To achieve the goal, the following methods were used: analysis and synthesis of scientific literature, econometric methods. The subject of the study is the regularities of the development of the production system (seaport) and its elements over time. The results are obtained: a two-factor Cobb-Douglas model was built, it characterizes the production process of the seaport. An assessment of the relationship between the production volumes of a stevedoring company and the main factors of production (fixed assets and labor resources) was made. The information base for the development of the model was the statistical data on the stevedoring company's PJSC “NCSP” work for the reporting period. The practical significance is as follows: using the methods of correlation-regression analysis, the Cobb-Douglas model was built. The tightness of the relationship between the volume and factors of production; the significance and quality of the constructed mathematical model were assessed.
Analysis of the amplitude-frequency characteristics of the on-board pitching obtained during the operational flight
Authors: Sichkarev Viktor I. , Umrikhin Viktor P. , Privalenko Alexey A.
Published: March 2023

Problems with ensuring the safety of navigation of vessels in waves and with optimizing the parameters of the vessel's movement currently arise, in particular, due to the inability to use new achievements in navigation of related scientific disciplines, such as the theory of ship pitching, oceanography. This is partly due to the lack of methods for obtaining the spectrum of actual waves in the vicinity of a ship that is on an operational voyage and does not have the ability to make stops to record waves, the absence of ship pitching recorders in the widespread practice of navigation and the lack of software for complex processing of the necessary information. At present, the SGUVT has created software and hardware complexes suitable for use by the full-time crew on ships in operation.

Modern software and hardware complex provides the possibility of automated recording of the ship's pitching and its processing. The pitching record can be processed to obtain an amplitude.
On the choice of a mathematical model for constructing the trajectory of the vessel in the decision support system by the boatmaster
Authors: Galeev Rustem E.
Published: March 2023

The article shows that modeling the movement of ships allows you to build predictive trajectories of movement of both your own vessel and other vessels in the water area. The issues of modeling and software construction of the proposed dynamic trajectory of the vessel as part of the ship's decision support system in navigation (DSS) are considered. The analysis of mathematical models of vessel movement that have proven themselves positively in research and design practice is carried out. The adequacy of the mathematical model was assessed taking into account the definition of the limits of its applicability, i.e. identification of typical modes of movement and the design (type) of the vessel for which the selected model can be used. The analysis of theoretical calculations and oscillograms of full-scale tests of serial vessels is carried out, showing that the dynamics of river displacement vessels is characterized by a number of specific features. The method of choosing a mathematical model of ship movement in order to create a DSS when controlling movement at short distances in cramped navigation conditions is proposed.
Effects of Uremic Pruritus on Dermatological and Kidney Disease Quality of Life in Patients Receiving Hemodialysis
Authors: TEKİN GÜL Duygu , KILIÇ AKÇA Nazan
Published: March 2023

Aim: This study was conducted in order to determine the dermatological and kidney disease quality of life of patients with uremic pruritus receiving hemodialysis treatment.
Material and Methods: The present study was a descriptive study. The sample comprised 200 of HD patients. The participants were required to complete patient information form, 5-D-Itch scale, Dermatological Quality of Life Index (DLQI) and Kidney Disease Quality of Life Form (KDQOL-36) were used to collect the data of the study.
Results: It was determined that the DLQI score average of the patients with pruritus was 11.57±4.74 and that the dermatological quality of life of 60.6% of the patients was largely or extremely affected. It was revealed that the average KDQOL-36 score of the patients with pruritus was 59.36±12.27, and their kidney disease quality of life was of moderate level. Pruritus severity explained a moderate amount of the variability of DLQL (crude R2 =.181) and KDQOL-36 (crude R2 =.184).
Conclusion: It was determined that as the severity of uremic pruritus increased, DLQI and KDQO-36 decreased. Therefore, timely treatment, nursing care and counseling are recommended to monitor level of pruritus, dermatological and general quality of life to improve the quality of life in HD patients.
Assessment of Periodontal Disease and the Presence of Pulp Stone: Retrospective Radiologic Study
Authors: YEMENOĞLU Hatice , KÖSE Taha , GÜNAÇAR Dilara Nil , ÇEBİ Ahmet Taylan
Published: March 2023

Aim: To evaluate the relationship between the severity of periodontal disease and the presence of pulp stones using panoramic radiographies.
Material and Methods: The study included 96 individuals aged 18-45 years. The patients were divided into four groups as control (periodontally healthy), gingivitis, stage 1-2 periodontitis and stage 3-4 periodontitis. The patients' panoramic radiographs and dental examination records were evaluated retrospectively and any pulp stones were recorded. The Chi-square test was used to determine the relationship between the presence of pulp stones and other parameters.
Results: Evaluating the findings on a patient basis, the highest pulp stones were seen in the stage 3-4 (79.2%) group, and the least pulp stones were observed in the control group (20.8%). There was a statistically significant difference between the control group and the gingivitis group (p=0.017), the control group and the stage 3-4 group (p<0.001), and the stage 1-2 and stage 3-4 groups (p=0.001). On a tooth basis, the most pulp stones were observed in the stage 3-4 (14.9%) group, and the least pulp stones were observed in the control group (1.7%).
Conclusion: The severity of periodontitis was associated with increased pulp stones. The diagnosis and treatment of patients with endodontic-periodontal problems should be carefully planned accordingly. The presence of pulp stones, which can complicate accessing root canals in endodontic treatment, should be comprehensively investigated.
Avaliação de investimentos externos em infraestrutura crítica : exemplos no setor de energia da Alemanha, da Austrália, dos Estados Unidos e da Rússia
Authors: Sanchez-Badin Michelle Ratton , Morais Ana Maria , Bonini Carolina Bianchini , Misra Manu
Published: March 2023

Nos últimos anos houve um aumento na implementação de Instrumentos de Avaliação dos Investimentos Externos (IAIEs) em diversos países desenvolvidos e emergentes. A preocupação em controlar a entrada de investimentos estrangeiros em determinados territórios refletia, inicialmente, preocupações com a segurança nacional dos países anfitriões. Porém, mais recentemente, outros conceitos têm sido incorporados à chave de segurança nacional, entre eles o de indústrias domésticas estratégicas e de infraestrutura crítica, o que inclui produção e fornecimento de energia. Diante disso, o objetivo deste artigo é analisar o funcionamento de IAIEs em quatro países selecionados a partir da relevância de atuação dos seus instrumentos, no caso dos investimentos no setor de energia, sendo eles: Alemanha, Austrália, Estados Unidos e Rússia. Com esta seleção pretende-se entender a dinâmica de funcionamento de tais instrumentos de avaliação, identificar os fundamentos para tais avaliações no setor de energia e traçar uma análise de similaridades e diferenças entre os casos.
Propostas de reforma tarifária no Brasil : uma análise comparativa
Authors: Kume Honorio
Published: March 2023

Uma reforma tarifária deve buscar dois objetivos: número reduzido de alíquotas e menor dispersão da proteção efetiva entre setores. Este trabalho avalia a redução de tarifas sugerida por Ipea, Centro de Debate de Políticas Públicas do Centro de Estudos de Integração e Desenvolvimento (CDPP/Cindes), fórmula suíça, de Maurício Moreira e Felipe Souza, e corte linear de 40%. Os resultados mostram que elas proporcionam uma redução significativa da proteção efetiva e nominal, sem alterar a ordenação dos setores. A maior homogeneidade da proteção é atingida pela fórmula suíça, enquanto a redução das alíquotas é obtida com os critérios do Ipea e do CDPP/Cindes. O corte linear é mais útil para enfrentar as pressões políticas.
O Debate sobre liberalização das importações de forma unilateral ou por meio de acordos comerciais : uma análise exploratória
Authors: Kume Honório , Nonnenberg Marcelo José Braga , Ribeiro Fernando José da Silva Paiva , Andrade Gerlane Gonçalves de , Oliveira Helena Nobre de
Published: March 2023

Este trabalho objetiva fornecer subsídios à discussão sobre a melhor maneira de reduzir o nível de proteção no Brasil sobre produtos industrializados: se através de uma redução tarifária unilateral ou se por meio da celebração de acordos comerciais. Os resultados sugerem que, em geral, os dezenove países de América Latina e Caribe, Europa e Ásia Central, leste da Ásia e Pacífico e sul da Ásia firmaram a maioria dos acordos comerciais após o processo de redução de tarifas. Nesse sentido, os acordos comerciais não parecem ter sido usados como estratégia para promover maior liberalização em lugar da abertura unilateral. Portanto, há indicações de que os países optaram pela abertura unilateral, com os acordos comerciais desempenhando um papel complementar.
Impactos da parceria econômica abrangente regional (RCEP) para as macrorregiões brasileiras
Authors: Gelatti Elisangela , Gurgel Angelo Costa , Burnquist Heloisa Lee
Published: March 2023

O crescimento dos países da Ásia-Pacífico, sobretudo da China, vem se consolidando como um fator central da economia internacional, ganhando mais relevância com a Parceria Econômica Abrangente Regional (Regional Comprehensive Economic Partnership – RCEP), um dos maiores acordos regionais de livre-comércio de bens e serviços em negociação no contexto global. Este trabalho tem como objetivo analisar os potenciais impactos do RCEP para o Brasil e suas macrorregiões. Para tal, utiliza-se de um Modelo de Equilíbrio Geral Computável para a Economia Brasileira (PAEG). Os resultados mostram que o RCEP deverá impactar negativamente a economia brasileira, especialmente o agronegócio, devido aos desvios de comércio gerados pelo acordo. Haveria algum ganho para os setores industrial e de serviços, porém insuficientes para compensar as perdas do setor do agronegócio. Uma possível adesão do Brasil ao RCEP, ao contrário, afetaria positivamente o agronegócio e elevaria o produto interno bruto (PIB) e o bem-estar em todas as macrorregiões brasileiras. Contudo, alguns setores industriais poderiam sofrer perdas de produção e de exportação.
Nova rota da seda na América Latina : entre adesões e hesitações
Authors: Lopes Filho Carlos Renato da Fonseca Ungaretti , Nunes Ticiana Gabrielle Amaral , Di Marco Giulia Marianna Rodrigues , Mendonça Marco Aurélio Alves de
Published: March 2023

O artigo analisa a recente evolução das relações econômicas entre América Latina e Caribe e China, conferindo destaque à expansão da Iniciativa do Cinturão e Rota (Belt and Road Initiative – BRI), ou Nova Rota da Seda, na região. O estudo justifica-se pelo perceptível adensamento e diversificação das transações entre a região e o país asiático nos últimos anos. A pesquisa se utiliza da geoeconomia como ferramenta analítica e da Economia Política Internacional como marco teórico-conceitual para explicar esse processo. Empiricamente, verificam-se a expressividade do aumento das interações nos campos de comércio, o investimento, o financiamento, além de contratos de infraestrutura, assim como são analisados os casos específicos de países latino-americanos que aderiram à BRI, destacando-se suas particularidades. Argumenta-se que a adesão desses países à iniciativa não constitui um fenômeno homogêneo, mas dotado de potenciais e desafios plurais, que só podem ser efetivamente compreendidos por meio de análises de casos.
TD 2859 - Retorno da educação técnica no Brasil : um estudo em painel e cross-section entre 2007 e 2018
Authors: Rosa Thiago Mendes , Cruz Bruno de Oliveira , Araújo Luiz Rubens Câmara de
Published: March 2023

Neste trabalho, estima-se o retorno da educação técnica no Brasil entre 2007 e 2018. Construímos um painel de trabalhadores por meio da Relação Anual de Informações Sociais (Rais) e, como estratégia de identificação, utiliza-se a descrição das ocupações definidas no Catálogo Nacional de Cursos Técnicos (CNCT) do Ministério da Educação. Este catálogo define as ocupações relacionadas aos diversos cursos técnicos no Brasil. Os resultados mostram um prêmio salarial positivo e significante entre 21,3% e 24,9% para os trabalhadores nas ocupações técnicas, controlando por variáveis observáveis disponíveis na Rais (como escolaridade, idade, tamanho da empresa e tempo de duração do vínculo). Mesmo quando restringimos a amostra para jovens de 18 anos, o prêmio salarial se mantém positivo e significativo, ainda que em valores menores (5,8% a 7,8%). Realiza-se também uma análise de consistência com duas coletas da Pesquisa Nacional por Amostra de Domicílios (PNAD) (2007 e 2014), nas quais há um questionário suplementar para o ensino técnico. Novamente, o prêmio salarial se mantém em valores positivos e significantes, exceto em 2014 para os jovens de 18 anos. Uma possível explicação para esse resultado é o mercado de trabalho mais restrito devido ao início da recessão econômica. Com base nos prêmios salariais encontrados, foi realizada uma análise de custo-benefício, sugerindo a viabilidade do ensino técnico, do ponto de vista exclusivamente privado, se a mensalidade for de até R$ 8.595,10 (a uma taxa de desconto de 6,0%).
TD 2860 - Investimento externo direto e aquisições no Brasil : os efeitos sobre as empresas receptoras
Authors: Vaz Paulo , Sabino Jean
Published: March 2023

Nos últimos dez anos, o número de fusões e aquisições de empresas por investidores estrangeiros dobrou como proporção do investimento externo direto (IED) em países em desenvolvimento. No Brasil, esse tipo de modalidade de IED corresponde a 70% das operações registradas entre 2012 e 2020. A partir dos microdados identificados de registros declaratórios de IED, direcionados a empresas brasileiras em funcionamento, e seu enriquecimento com dados administrativos, realiza-se um levantamento do padrão dessas transações no país, sua concentração espacial e setorial, o perfil das empresas receptoras e a origem dos recursos. Posteriormente, utilizando-se da heterogeneidade do mês de recebimento do IED, estimam-se os efeitos sobre o crescimento das empresas receptoras, a remuneração média, a proporção de trabalhadores com ensino superior, a probabilidade de exportar e os investimentos em inovação. Os resultados estimados através de um staggered difference-in-differences não apresentam tendências prévias e sugerem efeitos heterogêneos quanto ao porte da empresa nacional. Para as pequenas, há efeitos positivos sobre o crescimento, a remuneração média, a chance de exportar e os investimentos em inovação, com efeitos negativos sobre a proporção de trabalhadores com ensino superior. Para empresas maiores, o efeito é oposto ou nulo. Na média, há uma redução no quadro de funcionários, que se inicia poucos meses após a fusão e/ou aquisição por sócio estrangeiro, inclusive quanto a investimentos em pesquisa e desenvolvimento (P&D). Nesse processo, altera-se a composição educacional da força de trabalho empregada e mantém-se constante a remuneração média. Os resultados sugerem ainda que os efeitos mencionados são também heterogêneos entre os setores. Políticas públicas direcionadas à atração de IED destinados à aquisição (total ou parcial) de empresas brasileiras devem considerar as especificidades de cada cenário.
Believing and belonging in multicultureel Europa: een minderheidsperspectief
Authors: Fleischmann Fenella
Published: March 2023

As a consequence of international migration, religion has returned – if it had ever disappeared – as an important group boundary in contemporary society. This is evident in research on attitudes and social contacts that repeatedly shows social segregation and negative stereotyping particularly between Muslims and non-Muslims, but also between religious and non-religious individuals. The research outlined in this inaugural lecture focuses on the question under what conditions this group boundary becomes stronger, and when it takes on a more symbolic character or fades altogether. Drawing on large-scale survey research I aim to establish when people with a migration background can identify with and participate in European societies that are prevalently secular but where an anti-Islamic discourse is strong. What role do length of stay and intergroup friendship relations play in this process? I will argue that in addition to counting practice frequencies and the importance of religion, we need to better understand the different meanings that immigrants derive from their religion to get a grip on how and why religion acts as a social boundary in contemporary society.
AVIATION ACCIDENT AND INCIDENT FORECASTING COMBINING OCCURRENCE INVESTIGATION AND METEOROLOGICAL DATA USING MACHINE LEARNING
Authors: Caetano Mauro
Published: March 2023

Studies on safety in aviation are necessary for the development of new technologies to forecast and prevent aeronautical accidents and incidents. When predicting these occurrences, the literature frequently considers the internal characteristics of aeronautical operations, such as aircraft telemetry and flight procedures, or external characteristics, such as meteorological conditions, with only few relationships being identified between the two. In this study, data from 6,188 aeronautical occurrences involving accidents, incidents, and serious incidents, in Brazil between January 2010 and October 2021, as well as meteorological data from two automatic weather stations, totaling more than 2.8 million observations, were investigated using machine learning tools. For data analysis, decision tree, extra trees, Gaussian naive Bayes, gradient boosting, and k-nearest neighbor classifiers with a high identification accuracy of 96.20% were used. Consequently, the developed algorithm can predict occurrences as functions of operational and meteorological patterns. Variables such as maximum take-off weight, aircraft registration and model, and wind direction are among the main forecasters of aeronautical accidents or incidents. This study provides insight into the development of new technologies and measures to prevent such occurrences.
Perilampus neglectus and other neglected species: new records of Palaearctic Perilampidae (Hymenoptera, Chalcidoidea), with a key to European species of Perilampus
Authors: Mitroiu Mircea-Dan , Koutsoukos Evangelos
Published: March 2023

New faunistic records of Palaearctic Perilampidae (Hymenoptera: Chalcidoidea) are given, based on newly collected material in South-East Europe, South Korea and specimens from the Natural History Museum in London. Euperilampus Walker, 1871 is recorded for the first time in South Korea, with females of E. sinensis Bouček, 1978 being discovered and described for the first time. The genera Perilampus Latreille, 1809 and Steffanolampus Peck, 1974 are recorded for the first time in Greece. Perilampus noemi Nikol’skaya, 1952, collected on Crete and Salamina islands (Greece), is recorded for the first time in Europe. The following species are new to Greece: P. aeneus (Rossius, 1790), P. laevifrons Dalman, 1822, P. micans Dalman, 1820, P. minutalis Steffan, 1952, P. neglectus Bouček, 1956, P. ruficornis (Fabricius, 1793), P. tristis Mayr, 1905, and S. salicetum (Steffan, 1952). The following species are new to Romania: P. aeneus, P. auratus (Panzer, 1798), P. aureoviridis Walker, 1833, P. chrysonotus Förster, 1859, and P. laevifrons. The following species are new to Turkey: P. auratus, P. cephalotes Bouček, 1956, P. ruficornis, and P. tristis. Additionally, P. cephalotes and P. polypori Bouček, 1971 are new to Austria; P. masculinus Bouček, 1956 is new to Sweden; P. ruficornis is new to South Korea; and P. tristis is new also to Cyprus and Spain. The first host record for P. cephalotes and a new host record for P. laevifrons are also given. A key to 20 European species of Perilampus is included. Each species is diagnosed using macrophotography to facilitate its future recognition. The males of P. intermedius Bouček, 1956 and P. neglectus are described for the first time.