bluuebunny/crossref_metadata_2025 huggingface dataset:
The Effects of the Political Turbulences on the Stock Exchange Indices
Authors: Simion Luciana , Antonia Mihai
Published: August 2022

Political turbulence is known to influence the velocity of economic development and reduce investments. Our paper aims to point up the linkage between political instability and the evolution of the Romanian capital market. We model the volatility of two of the Bucharest Stock Exchange indices BET and BET-NG using a GARCH/ARCH approach for daily data between 2010 and 2021. Results highlight the interconnections between political and economic policy uncertainty and the financial market. In both cases, for BET and BET-NG, our study shows that different types of political events have different levels of influence on the indices’ volatility. Unexpected “shock” type events with negative impacts resulted in much higher volatility than positive events. When there were events that had fiscal connotations, they had a much greater power of penetration in the investment environment because it comes down to figures and calculations that had a direct, measurable impact. There is a need for political involvement, certainty, lack of ambiguity, and predictability, both from a legislative point of view and how it is applied.
Appeasement 2.0 - Russia’s expansion in the Black Sea region as a prelude to dominance in the Mediterranean and the Levant
Authors: Bran Alexandra-Carmen
Published: August 2022

With Russian troops gathering at the Ukrainian border at the time of writing, Europe and the West are facing a real possibility of a full-scale continental war unprecedented for our generation. The purpose of this paper is to bring forth arguments that the security in the Black Sea area is of vital importance for both the present and future developments in the entire continent. Most recent studies on this topic focus on Russia’s intentions in Ukraine and the weak responses coming from the West. Scholars are divided when it comes to Mr. Putin’s ultimate goals. While some view the recent developments as a bluff, others are concerned that the troop movements might pave the way for a full invasion of Ukraine which will lead to a domino effect. This paper will focus on qualitative analysis. Mr. Putin’s and Russia’s intentions in the Black Sea will be analyzed from primary sources (such as Presidential speeches), while scholarly articles, research papers and policy documents will be used to build a bridge between history, politics and current affairs. The focus will be to establish the extent to which the recent developments in the area are a prelude to an ‘old’ Russian dream of access to the Mediterranean. A compare and contrast approach to appeasement will be used in order to make predictions on the possible outcomes. Our results will show that Mr. Putin is using the Black Sea security as a bargaining chip in his confrontation with the West with the ultimate goal of gaining dominance in the Mediterranean space. This paper will contribute to the recent literature on Eastern European security and how the West continues to misinterpret the dynamics and history of the region.
Formulas for counteracting cyber threats in regards to computer products supply chains
Authors: Enache Gabriela Ioana
Published: August 2022

Technological evolutions have brought truly meaningful benefits, but also new challenges for which suppliers of computer product supply chains have had to find solutions. Cyber-attacks are being conducted by teams of cybercriminals who are highly skilled in computer science. There have been many episodes where governments of some countries financially supported such an attack on a public company or institution. The cyber-attacks problem is not new, and the economic damage it can do is truly impactful. I’ve undergone an analysis of relevant literature in order to identify the key factors and the limitations that supply chains are facing when it comes to computer products. Following ample research, I’ve formulated the research questions which I believe to be essential in providing answers that can bring contributions to the field: “What are the main challenges that computer products supply chains are facing?”, and “In what way can we limit these attacks?”

The results of the analysis classify the challenges in three key dimensions: hijacking updates, undermining code signing, and destroying the free access code. These challenges can be diminished by different strategies of securing the supply chains. I have identified three essential ways to secure the computer products supply chains: risk management, vulnerability management, and practices for disclosing the identified vulnerabilities.

The results of the study show that the challenges to public or private organizations can be limited by having a good understanding of the framework behind a cyber attack, as well as close collaboration between the supplier and the customer.
Circular economy: adopting new green trends in marketing for a sustainable consumer experience based on Internet of Things
Authors: Constantinescu Raluca , Muntean Denisa-Roxana
Published: August 2022

This paper presents the result of a research of the literature regarding circular economy, green trends in marketing, green IoT and consumer experience. Green concept was the main driver to link current marketing strategies for a sustainable consumer experience seen through consumers’ buying behaviour nowadays. The key aspects of this paper consist of analysing the basic concepts of green IoT and green marketing, combined to create a greener consumer experience, becoming a meaningful part of the circular economy. Climate change and protecting our environment are the biggest challenges of the modern world. Energy consumption is at the highest level ever, and a solution addressed to these challenges should be found in order for businesses and consumers to fulfil their needs. Circular economy is considered also part of the solution, but people should become more aware about the principle of circularity, and what it means in practice. Considering applying green marketing and green IoT concepts into practice, this paper could offer a solution. Even if the green concept should be applied by both businesses and consumers, we didn’t cover the consumer side, more specifically how they should act upon to become “greener” in their choices. Further research could be explored to find ways and means to educate the consumers.
AI, intelligent robots and Romanian drivers’ attitudes towards autonomous cars
Authors: Sanda Emanuel
Published: August 2022

Products and services based on some form of Artificial Intelligence are beginning to represent an ever-increasing presence in consumers’ daily lives. Already, technologies such as algorithms based on machine learning, digital personal assistants, chatbots, smart devices generically labeled as the Internet of Things, and ultimately physical robots, are all becoming a daily presence in consumers’ lives, conscientiously or unconscientiously, all incorporating a certain degree and level of development and application of Artificial Intelligence.

Artificial Intelligence is not without controversy and the debate around it concentrates on several aspects. From the get go, even attempting to define AI will lead to unavoidable debates about what it is and what it is not, how broad can the definition be, so as to cover many of the things we presently call Artificial Intelligence. Once a definition is agreed, usually a broad one, several categories emerge that could represent current applications of Artificial Intelligence, such as recommender algorithms, intelligent assistants, chatbots, and intelligent robots – with respect to the latter, autonomous vehicles are perhaps the most common occurrence. All of these applications of AI have many things in common, but none like the fact that their success depends on being able to feed on enormous amounts of consumer generated data. This opens the door to how this data, largely personal in its nature, is used and the underlying privacy issues that accompany it. To compound the problem, some promote the idea that Artificial Intelligence could advance to a level called AGI where machines would develop self-conscious attributes capable of escaping human control with all accompanying perils to the very existence of humanity.

Equally important is how AI may impact on people’s lives, at present, but especially in the future, and how individuals eventually perceive, position themselves and are willing to accept Artificial Intelligence.

This paper presents the results of a survey conducted among Romanian drivers in 2021 aimed at revealing how they position themselves in relation to the emergence of autonomous, self-driving cars. It identifies both potential benefits which drivers may associate with self-driving cars, as well as risks and concerns they might have. The balance between the two is critical in driving up acceptance of these technological advancements in our vehicles which are set to become the norm in a nearer or more distant future.
Alternative Unemployment Rates in Romania
Authors: Ștefan George , Paraschiv Anca , Volintiru Clara
Published: August 2022

Official statistics and usual metrics place Romania at a relatively low level of unemployment. This paper shows why this can be misleading, considering various specificities of the Romanian economy. Looking at such factors as structural features, a high number of people employed in agriculture, involuntary part-time workers, etc. we show that there are alternative metrics for unemployment that can constitute better diagnostic tools for public policies and labor market reform. The alternative unemployment metrics presented here, show that the real unemployment figures in Romania are much closer to those in Mediterranean economies like Greece, Italy, and Spain that have been struggling with high unemployment. Furthermore, we emphasize possible directions and measures to be implemented in Romania to reduce unemployment (especially structural) and to support inter-regional social cohesion and sustainable economic growth. Given the current context of the economic downturn in the post-COVID-19 and the projected impact on vulnerable groups and the risk of poverty, it is more important than ever to develop sound evidence for the policy-making process.
MENDELEY. El Facebook de los investigadores
Authors:   Universidad de Salamanca, Alonso Arévalo Julio
Published: August 2022

Los gestores de referencias bibliográficas se han convertido en herramientas indispensables para los investigadores. A través de ellas, se puede organizar toda la información consultada en bases de datos, sitios web, repositorios, blogs, documentos a texto completo, archivos digitalizados de todo tipo y otras fuentes de información. Este nuevo libro sobre Mendeley, escrito por el bibliotecario Julio Alonso Arévalo, tiene el objetivo mostrar cómo sacarle el mejor provecho a esta herramienta. Para ello, presenta una descripción de las características del sistema, muestra las ventajas que tiene para el trabajo del bibliotecario y de los investigadores, establece comparaciones con otros gestores y muestra, de una manera muy sencilla, cómo usarlo.
Surveying “Paradise’s only map”: Andrew Marvell and Early Modern Science
Authors:   Institute of British & American Studies Center for International Area Studies Hankuk University of Foreign Studies, Cho Hyunyoung
Published: August 2022

Andrew Marvell has rarely been studied in relation to early modern science, even though his poetry reveals his interest in the scientific and technological developments of his time. In this study, I make a claim that Marvell’s poetic innovation of the country house poetry results from his active engagement with the new insights of early modern science, articulated most famously by Francis Bacon. In his poetic innovation, Marvell draws upon the new empirical and analytic methodology of early modern science. My focus is the poet’s impersonation of an estate surveyor. By taking up the role of an analytic and yet poetic surveyor, the poet maps out the discursive field of multiple visions competing at the historical juncture, which used to be hidden behind the monolithic vision of a utopian community in earlier precedents of the genre. In this poetic map, the surveyor-poet manages to capture not only the ascending logic of land improvement, represented by his lord, Sir Thomas Fairfax, but also the alternative views, namely, Diggers’ proto-communist ideas and fenmen’s protest against agrarian modernization. The poetic map delineates the contours of the discursive conflict surrounding the land in mid-seventeenth century England, the locus of the birth of capitalism.
A Study on the Possibility of New Convergence in Physical Theatre: Theater-Re‘s Nature of Forgetting
Authors:   Institute of British & American Studies Center for International Area Studies Hankuk University of Foreign Studies, Joo Hayoung
Published: August 2022

Physical theatre is a form of theatrical performance that tells a story primarily through physical movements rather than language. Physical theatre provides a live, human experience, which is very different from any other form, and audiences are affected much more viscerally. The performance, emphasizing the metaphorical aspect, allows the audience to use their imagination to the maximum and induces emotional immersion through the dynamics of mime, gestures, physical movements, modern dance, and acrobatics. Since the 2000s, scientific studies on human behavior and cognitive neuroscience have caught the attention of physical performance researchers and performers, who have started to question the correlation between physical performance and cognitive behavior and neuroscience. The convergence of cognitive science and performance has developed in the direction of reviving “working memory” and “implicit memory” and activating “sensory memory” in people living with dementia in need of behavioral correction. Theatre Re’s The Nature of Forgetting (2017) received the great attention of the 2017 London International Mime Festival with a sell-out run. It is a powerful and explosive physical theatre piece about what is left when memory and recollection are gone. The process of “forgetting” that takes place in the human brain seems to be perfectly realized on stage with the emphasized “physicality”.
Jonathan Livingston Seagull: The Flight of a Philosophical Seagull and the Rediscovery of Part 4 and its Textual Rebirth
Authors:   Institute of British & American Studies Center for International Area Studies Hankuk University of Foreign Studies, Chung Gil-Wha
Published: August 2022

The personified storytelling of the protagonist Jonathan of Jonathan Livingston Seagull spreads out with its picture/photo images, which has a mystic metamorphosis motif while learning and developing through torture. Jonathan’s dialogue with his mother that seems to narrate the Kantian philosophy is about knowledge well-known with his question, “What can I know?” Jonathan’s philosophical flight is going to confront the existential situation that accelerates his conversion. Jonathan’s fable is an expression of free will to escape from a comfortable life. It is a narrative of adventure about a being deserted in the universe, and today in the early 21st century, it invokes us an ecological imagination of how to confront the extreme state of environmental crisis and how to overcome it. This novella that conveys a lesson of an adventure of selfhood, or contains a fable of adventurous seagulls can be read from new perspectives from the situation of an era. Its topic sentence as a proverb, “The gull sees farthest who flies highest.” has its Absolute Superlative whose deep structure we need to understand. Unlike its original English versions, only those of the Korean translation has its proverb with a picture/photo image, published by Munyechulpansa in 1973 and 1986 per se. In the Complete Korean Edition of 2015, the decorative sentence is finally excluded. This article involves a study on incongruities in its construction between the narrative and picture/photo images, and the rediscovery of Part 4 and its effect.
Lago y Sáenz. La materia y el vacío
Authors: Ramírez Potes Francisco , Clavijo García Liliana Andrea , Gutiérrez Paz Jaime
Published: August 2022

Manuel Lago (Popayán, 1932) y Jaime Sáenz (Cali, 1932) una vez concluyeron su formación como arquitectos en la Universidad de Cornell y la Universidad de Notre Dame, respectivamente, retornaron a Cali para asociarse como Lago & Sáenz y configurar así una de las firmas de arquitectura más sobresalientes y activas en el país, cuyos proyectos rápidamente alcanzaron reconocimiento en publicaciones internacionales. El libro a través de magníficas fotografías, gran cantidad de material documental inédito y la fuerza expresiva de los dibujos y bocetos, expone la evolución de una firma emblemática en la arquitectura moderna colombiana y muestra su exploración de la materia y el espacio en la oposición de cualidades: lleno-vacío; peso-levedad; natural-artificial, para destacar las condiciones del paisaje a través de volúmenes elementales con honestidad constructiva. Asimismo, exalta el uso del vacío como medio para establecer e intensificar las relaciones de los edificios con el entorno inmediato a través de la construcción de espacios urbanos, públicos y abiertos de carácter colectivo. Este libro permite además una lectura simultánea e interpretativa de la obra realizada por Lago & Sáenz y constituye un verdadero aporte a la historia cultural, al ir más allá de la valoración crítica y la historiografía tradicional de la arquitectura, y al abordar el contexto de las redes profesionales, académicas, artísticas, económicas y sociales en que se producen sus obras.
Formulación del proyecto de diseño en sistemas sociales complejos.
Authors: Uribe Becerra Miguel
Published: August 2022

El proceso en el que los profesionales de diseño identifican y definen el problema a abordar no es suficientemente considerado en la enseñanza y práctica del diseño industrial, opuesto al diseño a partir de problemas definidos o de la concepción intuitiva de la respuesta de diseño. Este método lo entiende como un proceso variable y complejo donde el diseñador al observar la realidad y comprender la situación problema ya preconfigura una respuesta de diseño; entender el problema, aún en sus etapas tempranas, nunca se trata de un proceso desligado de la comprensión misma de la solución del problema; por lo tanto el proceso de investigación propia del diseño no es un proceso secuencial ni puede ser abordado mediante métodos clásicos de investigación. El diseño industrial actualmente no solo se ocupa de resolver los problemas formulados, el diseño busca los problemas observándolos desde una perspectiva e intención muy particulares, de modo que su método de investigación lleva consigo la premisa de una respuesta práctica al problema que aborda; su propósito no es tanto comprender la realidad, como transformarla; su fin último se materializa en productos, estructuras o sistemas y no en la descripción de fenómenos existentes. Este desarrollo metodológico realiza aportes epistemológicos en la definición del campo disciplinar al ampliar su concepción como disciplina desde la misma formulación del problema a abordar y propone herramientas flexibles y adaptativas aplicables a las etapas iniciales de los procesos de identificación de necesidades en entornos sociales. El libro hace un recorrido teórico basado en diversos autores para ubicar la investigación para el diseño en un campo muy particular, permitiendo desligarse de métodos tradicionales, y lo que resulta más útil para el estudiante de diseño, apartarla de la concepción del proceso secuencial donde es necesario generar conocimientos o llevar a cabo un proceso de investigación que culmina con un texto base que define el problema y contiene los requerimientos que deberá cumplir la propuesta de solución o diseño propiamente dicho. Se destacan dos herramientas metodológicas para su aplicación: la identificación del problema dentro de las competencias del diseño mediante la observación ubicada del problema con usuario, necesidad y contexto identificados, y su análisis dentro de un entorno social complejo mediante la elaboración de un árbol temático que permite ordenar las variables del problema para la identificación de sus relaciones.
Methodology of analysis of directive speech acts in English and Arabic academic discourse
Authors: Alhaded Hashem Hani Shehadeh , Shavtikova Aurika , Savalkha Odai Naim Mokhammad
Published: August 2022

This article presents the author's methodology for analyzing directive speech acts in English and Arabic academic discourse, developed during the writing of the author's dissertation research. The purpose of the article is to describe and confirm the effectiveness of the methodology for analyzing directive speech acts within the framework of two academic discourses. In addition to substantiating the choice of research methods and respondent groups, the article presents a written discursive test with situational examples developed on the basis of the classification of directive speech acts by J. Serle (1979). We propose the study of directive speech acts from the point of view of grammatical, cultural, social and lexical aspects. The purpose of this article is an attempt to propose the author's methodology for analyzing directive speech acts in a comparative aspect within the framework of academic discourse functioning in English and Arabic. The novelty of the research lies in the fact that earlier in Russian and foreign linguistics, no attempts were made to develop a methodology for analyzing directive speech acts in a comparative perspective of English and Arabic. In conclusion, the author makes a conclusion about the effectiveness of the proposed method of analysis, and also notes the prospects for further research on the proposed topic. The results of the article can be used in the compilation of methodological complexes for teaching comparative linguistics, as well as courses on discourse analysis in higher educational institutions.
Political parties' portrayal attempts in creating an image of Aceh's women politicians
Authors: Mardhiah Ainol , Puspasari Cindenia , Anismar Anismar , Mulyadi Mulyadi
Published: August 2022

This study aims to provide an overview of political imagery done by political parties for their female politicians. The constructivist paradigm with a descriptive qualitative approach is used in this study. The informants were the chairman of the DPC of the Democratic Party, the PPP Party, the PKB Party, the chairman of the PDI-P DPD, and female politicians from these parties. The data analysis technique used in this study was the Interactive Model Data Analysis method. The results show that the political parties establish a positive image of women politicians, including involving all women members of the political party in every activity carried out by the party, both in a formal party and non-formal activities within the community. In every activity in the community, political parties attempted to provide the public with an understanding of the importance of the presence of women in the political space, because women will understand women's needs and produce feminist policies. The political imagery was done through political communication media, interpersonal (face to face), groups, mainstream media, and modern media. Political image establishment attempted by political parties for female politicians still has not shown a promising direction. Therefore, political parties must form a positive image for female politicians of their parties. This should be done massively by utilising various media of political communication, involving all community groups, such as the Ulama, Academics, and Non-Governmental Organisations.
Consumption practices of women in the JN Surabaya taklim council
Authors: Srinarwati Dwi Retnani
Published: August 2022

Currently, in Indonesia, many religious institutions serve as a forum for women's empowerment, service, and advancement, in the form of educational institutions, Islamic boarding schools, Taklim Council, socio-religious organisations, and women's NGOs. All of them have a concern for improving women's standard of living. Therefore, the recitation is a religious institution deeply rooted in Islamic society, one of which is the JN Surabaya Taklim Council. This study aims to determine women's consumption practices in the JN Surabaya Taklim Council. The type of research chosen in this study is qualitative research with a form of qualitative descriptive research. In this study, the JN Surabaya recitation council members were research informants. The conclusion of this study shows that women's consumption practices in the Salafi Taklim Council are studied as objects or behaviours that appear, as values, and meanings, until they are continued as 'signs'. Consuming signs as a hyperreality and hyperreality occurs through a process preceded by simulacra, which becomes the simulation process's vehicle.
Development of the Electricity Demand Response Mechanism for Renewable Integration and Consumer Engagement in Latvia. Doctoral Thesis
Authors:   ,   Rīga Stradiņš University, Siliņeviča Veronika
Published: August 2022

The key principle of electricity market design is the maximisation of public welfare. In the context of rational electricity consumption, social welfare is the sum of consumer surplus, supplier surplus and congestion rents in order to maximise the benefits to society. For decades, the importance of balancing supply and demand has been emphasised in discussions on the security of the electricity sector. It has been reasonably assumed that electricity demand is inelastic, mainly by studying supply potential. However, the current understanding of supply and demand in the electricity system needs to address the three main challenges of European energy policy: sustainability, security of supply and competitiveness, while guaranteeing fairness in energy distribution. The aim of the research is to develop a conceptual framework for the integration of renewable energy sources and consumer involvement, based on the technology of a Demand Response aggregator – an information and technology company – in the Latvian electricity sector. The Thesis consists of an introduction, four chapters, conclusions, recommendations and a bibliography. The introduction explains the actuality of the research topic, defines the aims and objectives of the research, its subject and object, puts forward the research hypothesis, and determines the scientific novelty and practical significance of the research. In the first and second chapters, a theoretical and methodological framework, economic and institutional foundations and peculiarities of Demand Response in the energy sector, electricity price factors, the new role of electricity end-users and the possibilities of optimising demand response are provided. In the third chapter, the author analyses the macroeconomic and physical indicator trends of the energy sector, the renewable energy sources and electricity system prices, calculates approximate dependence formulae and coefficients of determination; develops a methodology for a comprehensive analysis of correlation and regression dependence of physical and system price indicators of the electricity sector based on an appropriate adaptation of classical mathematical models, and contributes to the literature on the impact of the state aid on the electricity market. In the fourth chapter, the author has proposed and developed a new two-level technical model for optimisation of demand response services, which proposes to solve the problem of reducing electricity consumption in the first stage and, in the second stage, to solve the optimisation problem of which group of active consumers' loads to disconnect in case of electricity shortages, thus, to respond to electricity market prices. The main text of the Thesis is 155 pages. The bibliography contains 137 sources. Additionally, 48 tables, 31 figures and 2 annexes are included in the Thesis.
Resultados de la liberación endoscópica del túnel del carpo. Serie de casos
Authors: Sandoval Alejandro , Vernaza-Obando Daniel , Torres Daniela , Martínez-Cano Juan Pablo , Lombana Álvaro José , Campo Hugo Darío
Published: August 2022

Introducción. El síndrome del túnel carpiano es la neuropatía compresiva más común en consulta médica. Su tratamiento quirúrgico consiste en la liberación del ligamento transverso del carpo.

Objetivo. Describir los resultados y las complicaciones postoperatorias presentadas en pacientes sometidos a liberación endoscópica del túnel del carpo.

Materiales y métodos. Estudio de serie de casos retrospectivo que incluyó los pacientes mayores de 14 años a los que se les realizó liberación endoscópica del túnel del carpo entre enero 2011 y diciembre 2014 en la Fundación Valle del Lili (Cali, Colombia). Se realizó seguimiento al mes y a los seis meses postoperatorios y se evaluaron desenlaces clínicos y complicaciones.

Resultados. Se incluyeron 270 pacientes que fueron operados durante el tiempo del estudio. 27 de ellos no asistieron al control del primer mes postoperatorio, por lo que se perdió su seguimiento, y de los 243 evaluados, 171 no tenían síntomas residuales (alteraciones sensitivas, alteraciones de la fuerza o despertares nocturnos). Al sexto mes postoperatorio solo 146 pacientes asistieron al seguimiento, de los cuales 124 no presentaban síntomas residuales. La complicación más frecuente fue el dolor crónico de los pilares, presente en 23 de 146 pacientes. No hubo ninguna lesión neurovascular.

Conclusión. La liberación endoscópica del túnel del carpo es un procedimiento seguro y efectivo para el tratamiento quirúrgico del síndrome del túnel carpiano.

Nivel de evidencia: IV.
Colgajo libre paraescapular en la cobertura de quemaduras eléctricas. Reporte de caso
Authors: Díaz-Battle Luis Carlos , Carrascal-Carrasquilla Octavio de Jesús , Camargo-Lozada Marly Esperanza , Pichón-de la Rosa Kelly Johanna
Published: August 2022

Introducción. La reconstrucción del miembro superior representa un desafío. Las quemaduras eléctricas producen lesiones devastadoras en las cuales los colgajos libres son una de las mejores alternativas para realizar cobertura temprana con resultados satisfactorios.

Caso clínico. Hombre de 46 años con quemaduras eléctricas de alto voltaje con compromiso del 35% de la superficie corporal total; las quemaduras, que eran de II y III grado, se localizaban en el tronco y las extremidades. El paciente, fue manejado por unidad de cuidados intensivos, cirugía plástica, ortopedia y clínica de heridas, presentaba defecto de cobertura residual en la muñeca, compromiso del nervio mediano y arteria cubital, exposición de tendones flexores y extensores y arteria radial sin lesiones. Al día 23 de hospitalización se le realizó reconstrucción del nervio mediano con injerto de nervio sural, y cobertura con un colgajo libre paraescapular. A los cuatro meses posoperatorio tenía una evolución satisfactoria.

Conclusión. El sistema subescapular permite realizar colgajos libres quiméricos útiles para la liberación de articulaciones contraídas, la reducción del riesgo de infección, la protección de estructuras vitales y la disminución de la estancia hospitalaria, así mismo ayuda a evitar la amputación y permite la rehabilitación temprana.
Necrosis avascular idiopática del hueso grande. Reporte de caso
Authors: Gómez-Sánchez Alba , Pardo-García Juan María , Jiménez-Díaz Verónica , García Lamas Lorena
Published: August 2022

Introducción. La necrosis avascular (NAV) del hueso grande es una enfermedad rara y de etiología desconocida que suele aparecer en personas jóvenes y causa dolor crónico e impotencia funcional en la muñeca. Existen múltiples tratamientos para esta patología; sin embargo, actualmente no hay un consenso claro sobre las indicaciones de estas técnicas.

Presentación del caso. Mujer de 27 años quien asistió al Servicio de Cirugía Ortopédica y Traumatología de una institución de tercer nivel de atención por dolor en la muñeca izquierda que comenzó ocho meses atrás. Como único antecedente de importancia, había presentado un golpe en el área. En la radiografía que presentó la paciente no se encontraron alteraciones. Se ordenó resonancia magnética nuclear (RMN) que mostró fractura trabecular extensa del hueso grande con signos de pseudoartrosis y edema óseo, por lo que se inició manejo conservador. En la RMN de control, realizada un año después, se observó persistencia de edema óseo, por lo que se sospechó NAV del hueso grande y se realizó tomografía axial computarizada que confirmó el diagnóstico. La paciente fue tratada mediante resección artroscópica del polo proximal del hueso grande con buenos resultados a corto plazo.

Conclusión. Es necesario realizar nuevos estudios con resultados a largo plazo y que comparen las diferentes opciones terapéuticas para esclarecer el mejor tratamiento de esta rara enfermedad.
Osteomielitis hematógena subaguda del carpo con artritis séptica secundaria en paciente pediátrico. Reporte de caso
Authors: Vergara-Amador Enrique , Tobón-Jiménez Andrés , Martínez-Villegas Tomás , Trejos-Carvajal Álvaro Daniel
Published: August 2022

Se presenta el caso de un paciente masculino de cinco años de edad con diagnóstico de osteomielitis hematógena subaguda de hueso grande, escafoides, trapecio, semilunar y segmento distal del radio de su mano izquierda, con artritis séptica intercarpiana y radiocarpiana. El menor no tenía antecedente de lesiones previas y el diagnóstico clínico fue confirmado mediante exámenes de laboratorio, radiografías, resonancia magnética y hallazgos intraquirúrgicos.

Los cultivos microbiológicos resultaron negativos. Al paciente se le proporcionó manejo con drenaje quirúrgico y tratamiento antibiótico endovenoso, con lo que se obtuvo mejoría clínica postoperatoria.

La osteomielitis en el carpo es una infección poco frecuente en población pediátrica y que en la mayoría de los casos se asocia con lesiones cutáneas de base. El presente caso es interesante ya que el paciente no solo presento una osteomielitis del carpo aislada, sino que esta estaba acompañada de artritis séptica secundaria.
Criptorquidia: evolução à medio e longo prazo dos pacientes submetidos à orquidopexia em hospital do ABC paulista
Authors: Costa Filha Giane Prata da , Dourado Matheus Silveira Carneiro Ildefonso , Santos Luis Ricardo Longo dos
Published: August 2022

Objetivo: Avaliar a evolução tardia dos pacientes operados na região do ABC paulista, identificando eventuais complicações e sua correlação com condições perioperatórias. Métodos: análise retrospectiva do prontuário de pacientes tratados cirurgicamente, com avaliação de resultados tardios e complicações associadas. Resultados: A maioria dos pacientes perdeu seguimento e o número de cirurgias bilaterais ou unilaterais não foi significativamente diferente. 27,78% dos pacientes que fizeram espermograma tiveram resultado normal enquanto 63,64% tiveram testículos eutróficos ao ultrassonografia (USG) doppler. Conclusão: Apesar da perda de acompanhamento que limitou as correlações entre as condições perioperatórias e os resultados tardios do tratamento, dos pacientes acompanhados até a idade adulta, a maioria apresentou espermograma anormal, enquanto os exames de USG doppler e dosagem de testosterona foram predominantemente normais.
Effects regularly exercising in two different PM2.5 concentration
Authors: Bahri Samsul , Resmana Dadan , Safei Imam
Published: August 2022

Performing exercise or physical activities for a long duration under the exposure of air pollution becomes an unhealthy combination and will increase the risks of the individual inhaling more pollutant. Studies that examine an individual performing physical activities regularly in two public sport centers with different levels of air pollution have not been extensively documented, therefore the purpose of this study is  to evaluate effects of regular exercise on  aerobic capacity, force vital capacity (FVC), and hematological profile among individuals in an environment with similar climatic characteristics but different concentrations of air pollution. This trial composed 15 males (age range from 16 to 18) from Bandung City, Indonesia. Two public sport centers with similar climatic conditions (temperature, and humidity), but different concentrations of air pollutants are selected. Participants performed exercises three times a week for three consecutive weeks at each research site, with a two-week break.  Participants’ aerobic capacity, respiratory capacity, and blood sample are measured before and after they exercised at each site.  The measured parameters in both sites are compared and analyzed. Aerobic capacity, FVC, and RBC after participants exrcised in the area with lower air pollution show higher value than exercised in the area with higher air pollution. Manwhile WBC is shown to be high after participants exercised in the area with higher air pollution. This happened because air pollution has effect to human physiological characteristics. This research shows that exercising at sport center with high air pollution had negative effect on hematology profile and could affect the development of aerobic and respiratory capacities. The limitations in this study are the unknown intensity when doing regular physical exercise so that in future studies it is recommended to determine whether the intensity will affect the variables in the research subject.
Социалната работа като процес — институционализация, иден- тификация и интернационализация. Ситуационен анализ на здравната система на Република България
Authors: Terziev Venelin , Ivanov Ivan
Published: August 2022

Настоящият монографичен труд дава кратък обзор на съвременните подходи в изследванията на социалната политика и социалната работа, като акцентира върху концептуалните основи, историческото развитие и съвре- менните измерения на социалните политики. Направен е детайлен анализ на елементите и характеристиката на пазара на труда, неговата същност и особености, видове, структура и основни потоци, както и институциите на пазара на труда. Във втората част е направен преглед на текущото състояние на здравната система в България, като е отделено основно внимание на фи- нансирането на лечебните заведения, лекарствената политика, миграцията на медицински кадри и заплащането на труда на медицинския персонал. В третата част е направен критичен анализ на влиянето на пандемичната криза върху системата на здравеопазването в България.
Atomistic Insights into the Oxidation of Flat and Stepped Platinum Surfaces Using Large-Scale Machine Learning Potential-based Grand-Canonical Monte Carlo
Authors: Xu Jiayan , Xie Wenbo , Han Yulan , Hu Peijun
Published: August 2022

Understanding catalyst surface structure changes under reactive conditions has become an important topic with the increasing interest in operando measurement and modelling. In this work, we develop a workflow to build machine learning potentials (MLPs) for simulating complicated chemical systems with large spatial and time scales, in which the committee model strategy equips the MLP with uncertainty estimation, enabling active learning protocol. The methods are applied to constructing PtOx MLP based on explored configurations from bulk oxides to amorphous oxidised surfaces, which cover most ordered high-oxygen-coverage platinum surfaces within an accessible energy range. This MLP is used to perform large-scale grand canonical Monte Carlo simulations to track detailed structure changes during oxidations of flat and stepped Pt surfaces, which is normally inaccessible to costly ab initio calculations. These structural evolution trajectories reveal the stages of surface oxidation without laboriously manual construction of surface models. We identify the building blocks of oxide formation and elucidate the surface oxide formation mechanism on Pt surfaces. The insightful interpretations of the oxide formation are likely to be general for other metal surfaces. We demonstrate that these large-scale simulations would be a powerful tool to investigate realistic structures and the formation mechanisms of complicated systems.
Can an Emergency Surgery Scheduling Software Improve Residents’ Time Management and Quality of Life?
Authors: Lee James , Aoude Ahmed , Alhalabi Becher , Watt Ayden , Lessard Lucie
Published: August 2022

Background: Operating room efficiency is invaluable.  Particularly in public health systems, where resources are limited and patient loads are high, efficient systems underpin the continued delivery of high quality care. In addition to impacting patients, the implementation of efficient healthcare tools has the potential to improve staff quality of life. In the face of growing surgical resident attrition and healthcare worker burnout, developments in standard practice, such as the implementation of the 80-hour work week, are necessary to improve quality of life.
Materials and methods: A new online scheduling software (ORNET.CA) was created, installed, and piloted in a Level I Trauma Center after instructing users (physicians and nurses) on its use. A 20-item survey was then distributed to all users to assess the effect implementation of the software had on their quality of life.
Results: ORnet was shown to improve communication between hospital staff and physicians, reduce workflow interruptions, and improve the quality of the working environment. The survey showed that 60% of residents and 50% of attending staff believed that ORNET.CA improved their quality of life.
Conclusions: We present data from a novel emergency operating room scheduling system that allowed surgical residents and attending physicians to better plan their on-call shifts. Staff (resident and physician) reported survey results suggest that implementation of this system resulted in an improved quality of life and a decrease in stress and anxiety levels.
Rethinking Modern Hospital Architecture Through COVID-19
Authors: Park Jeffrey KiHyun
Published: August 2022

Lately, the premier ateliers of contemporary architecture -- such as Herzog & de Meuron, or the Office of Metropolitan Architecture -- are showing increasing interest in hospital design, once the realm of highly specialized architectural firms. This trend towards reevaluating hospital design and architecture is most opportune, as the COVID-19 pandemic urges us all to rethink the ways in which our healthcare institutions can be better designed. This commentary is a discussion on the emerging issues of contemporary hospital architecture, especially as reinforced by the pandemic. For instance, while hospital architecture today focuses on individualized care, providing each patient with hotel-like rooms, the pandemic has reminded us of the issue of capacity and inequality in these limited and costly spaces. To what extent should hospitals be centralized or decentralized? Specialized or despecialized? This commentary discusses how COVID-19 has provided insight into some of contemporary hospital architecture’s greatest problems; specifically, it argues that the hospital of the future must exist on a more decentralized platform, both physically and digitally, and be more flexible in function.
Measurement of Nonlinear RCS of Electronic Targets for Nonlinear Detection
Authors: Oh Soo Young , Cha Kyu Ho , Hong Hayoung , Park Hongsoo , Hong Sun K.
Published: August 2022

The conventional radar technology is based on linear detection—i.e., the same transmit and receive frequencies are used. However, with linear radars, difficulties arise when detecting electronic objects with relatively small radar cross section (RCS). To overcome these limitations, a nonlinear radar that can detect nonlinear responses (i.e., harmonic and intermodulation) scattered by electronic devices due to nonlinear interaction can be utilized. Nonlinear radars require a different analysis from linear radars for analyzing RCS. In this paper, we present an experimental analysis of the nonlinear RCS of various electronic devices. Unlike linear radars, RCS in nonlinear radars is determined by the amount of nonlinear responses backscattered to the radar. Therefore, we derive a radar equation accustomed to harmonic radars that consists of nonlinear RCS. We then obtain and analyze the nonlinear RCS of various targets from the measured harmonic responses of the targets based on the nonlinear radar equation.
Compact 28 GHz Folded Butler Matrix Using Low-Temperature Co-fired Ceramics
Authors: Nam Seunggoo , Choi Sehwan , Ryu Jongin , Lee Jaeyoung
Published: August 2022

This paper introduces a miniaturized Butler matrix design method using a folded structure. The Butler matrix was fabricated in multilayers using low-temperature co-fired ceramics (LTCC) and designed to operate at 28 GHz. The conventional one-plane Butler matrix has a major disadvantage in that the length and volume of the system inevitably have to be increased. By using the proposed folded structure, the length can be reduced more than two times compared to the general one-layer Butler matrix. In order to minimize the loss of the Butler matrix, it was designed in a stripline structure by forming a ground plane on the upper and lower surfaces of each layer. A signal is transmitted between the layers through via holes. A 4 × 4 Butler matrix was fabricated and measured for the demonstration of the proposed concept. The proposed Butler matrix was measured through a precisely calibrated antenna chamber with closed cell absorbers. The dimensions of the fabricated Butler matrix are 14 mm × 20 mm × 1.52 mm. The beam of the fabricated Butler matrix can be properly steered in a total of four directions.
Iterative Method for Modeling a Wireless Power Transfer System with Nonlinearity of Voltage Rectifier
Authors: Song Eakhwan , Ahn Jangyong , Kim Jiseong
Published: August 2022

In this paper, we developed an iterative method for modeling a wireless power transfer (WPT) system with nonlinearity. The proposed method can determine the steady-state characteristics of the nonlinear rectifier circuit based on the converging iteration. Additionally, the transfer response of the receiving voltage can be identified with respect to the operating frequency by employing the proposed method in the frequency domain. The proposed method was applied to a WPT system that was designed based on the Qi specification. The circuit simulation and measurement results successfully validated the application of the proposed iterative method.
Antibacterial Activity of Stachys sylvatica Against Some Human Eye Pathogens
Authors: DÜLGER Görkem , DÜLGER Başaran
Published: August 2022

The ethanol extracts obtained from the leaves of Stachys sylvatica L. (Lamiaceae) were evaluated for their antibacterial activity against some human eye pathogens by disc diffusion method against hospital isolates of Bacillus cereus, Pseudomonas aeruginosa, Klebsiella pneumoniae, Staphylococcus capitis, Staphylococcus aureus, Staphylococcus epidermidis, Moraxella nonliquefaciens and Cutibacterium acnes. Besides, Penicillin, Ampicillin and Tobramycin as antibacterial antibiotics were used as a positive reference standard to determine the sensitivity of the isolates. The extracts showed a potential antibacterial effect against Staphylococcus capitis, Moraxella nonliquefaciens and Cutibacterium acnes, with inhibition zones of 22.4 mm, 21.6 mm and 20.2 mm, respectively. The extracts also exhibited a moderate effect against the other bacterial isolates. The plant may be useful in the treatment of eye infections.