bluuebunny/crossref_metadata_2025 huggingface dataset:
Parallel Virtual Memory for Time Shared Environments
Authors: Reis Verônica L. M. , Campos Luis Miguel , Scherson Isaac D.
Published: September 2022

This paper analyses the issues involved in providing virtual distributed shared memory for time-shared parallel machines. We study the performance of two different page management policies, namely, static and dynamic page allocation under two widely accepted scheduling policies: Gang scheduling and independent processor scheduling. The performance of each page management policy is studied under different replacement scopes (local versus global replacement). Results obtained after extensive simulations show that dynamic page allocation performs better throughout all the environments simulated. We also observe a better performance of independent processor over gang scheduling as well as a similar performance between local and global replacement scope.
Performance Portability of XL HPF Compiler on IBM SP2 and SMP Multiprocessors
Authors: Zaafrani Abderrazek , Tian Xinmin
Published: September 2022

High Performance Fortran (HPF) is a data-parallel programming language that allows the programmer to specify the data decomposition onto the processors while the compiler takes care of the tedious tasks of communication generation and computation partitioning. Shifting some of the complex tasks from the user to the compiler should encourage programmers to write and port code to parallel machines especially if the compiler implements these tasks efficiently. In this paper, performance results and analysis of a subset of the SPEC92 is presented for the XL HPF compiler on IBM SP2 machines. In addition to obtaining good performance from the compiler, one of the the main concerns of HPF users is portability. Experimental results and analysis are presented in this paper to investigate performance portability (consistency) first across multiprocessor architectures and then across compilers. For performance portability across multiprocessor machines, the same XL HPF compiler used for the IBM SP2 distributed memory machine experiment is also used to compile and execute the same applications but on IBM SMP machines. The comparable speedup and behaviour obtained for both machines indicates that HPF compilers can be portable across different architectures. For performance portability across compilers, various HPF programming techniques and recommendations are introduced to increase the chances of obtaining performance consistency with different HPF compilers.
Performance Evaluation of a Microarchitecture With Multiple Flows of Control
Authors: Santos Francisco , Santos Rafael R. , Santos Anna Dolejsi , C. Filho Eliseu M. , Navaux Philippe O. A.
Published: September 2022

This work presents a new approach to exploit the Instruction-Level Parallelism. In the MULFLUX microarchitecture each branch instruction spawns two different flows, corresponding to the two possible branch paths. Instructions from both flows are executed speculatively in parallel. Cycles consumed by discarded instructions are not visible, because the correct instructions also have been executed. The concept of multiple flows of control as exploited in this research work has provided promising results, with performance gains of up to 109% for a configuration supporting up to 16 aclive flows. Among the configurations considered here, the configuration with a maximum of 4 aclive flows exhibited the best compromise between performance and resource replication: it provided a performance gain of 105% and full dispatch width utilization of up to 41%.
Selecting Directions for Parallel RAMS Performance Optimization
Authors: Mendes Celso L. , Panetta Jairo
Published: September 2022

This paper presents the results from a preliminary performance evaluation of parallel RAMS, a numerical weather prediction model designed to simulate atmospheric phenomena at a regional level. The main goal in our work was to study in detail the performance of the current RAMS version, and to uncover aspects of its code where opportunities for optimization exist. We present our observations on both computation and communication performance of RAMS executing on a distributed memory parallel platform, and analyze their contributions to total program performance. From the observed data, we present simulations that predict bounds on potential performance gains for possible load balancing strategies.
Modelagem e Avaliação de Desempenho de Agregados Conectados por Tecnologia SCI
Authors: Ávila Rafael B. , De Rose Cesar A. F. , Navaux Philippe O. A. , Hexsel Roberto A. , Heiβ Hans-Ulrich
Published: September 2022

SCl é uma das mais promissoras tecnologias de comunicação da atualidade na construção de agregados de estações para processamento de alto desempenho, principalmente pelo oferecimento do modelo de memória compartilhada. Sua utilização na prática, entretanto, é ainda cercada de questões técnicas como topologias de construção de agregados, expectativa de desempenho e padrões de referências a dados compartilhados. Este artigo apresenta um projeto que visa a resolução de tais questões por meio de modelos de simulação de hardware e de programas sobre agregados SCI. O texto expõe os objetivos e principais atividades previstas para a pesquisa. Ao final são apresentados os resultados obtidos na primeira fase do projeto, com a avaliação de desempenho de um agregado baseado em máquinas PC multiprocessadas utilizando o sistema Linux.
Um Modelo de Programação Paralela Simples para Arquiteturas Distribuídas de Baixo-Custo
Authors: Paulino Hervé , Silva Fernando , Lopes Luís
Published: September 2022

Este artigo descreve o desenho e implementação de um sistema de programação paralela para ambientes distribuídos, o di_pSystem. Este sistema proporciona aos utilizadores um modelo de programação próximo de um modelo de memória partilhada tomando a implementação de aplicações mais intuitiva e transparente. O modelo de programação é suportado por uma camada de software, entre a aplicação do utilizador e o sistema operativo, que gere a comunicação, a distribuição e balanceamento de trabalho no sistema. Esta camada permite esconder do utilizador muita da complexidade associada à implementação de aplicações em arquitecturas distribuídas mantendo no entanto o sistema competitivo em termos de performance. As primitivas de comunicação do sistema são implementadas utilizando o MPI como backbone. Os resultados iniciais indicam que o sistema tem uma performance próxima do MPI, facto que se atribui à sua capacidade de balancear o trabalho no sistema dinamicamente.
Um Algoritmo Distribuído para Detecção e Localização de Falhas em Redes tipo Hipercubo
Authors: Nascimento Saulo Rodrigues do , Henriques Marco Aurélio Amaral
Published: September 2022

Este trabalho propõe um algoritmo distribuído para detecção e localização de enlaces e nós falhos em redes tipo hipercubo quando estes, em conjunto, não excedem (n-1), sendo n a dimensão do hipercubo. Tal algoritmo é executado de forma paralela em todos os nós não-falhos, utilizando trocas de mensagens entre vizinhos. Cada nó do hipercubo mantém em memória informação das condições de falha de sua vizinhança. São necessários três estágios de trocas de mensagens entre vizinhos para que todos os nós se informem da presença ou não de algum enlace ou nó vizinho defeituoso. O custo total da operação é da ordem de O(n2). A eficiência e a correção do algoritmo foram verificados através de diversos testes realizados em hipercubos de 8 a 64 nós nos quais falhas foram geradas aleatoriamente.
Parallel Space-Time Adaptive Processing On a Cluster of Personal Computers
Authors: Silva Fernando , Lamont Gary B.
Published: September 2022

This work evaluates the capabilities and the performance of the Air Force Institute of Technology's Pile-of-PCs for parallel digital signal processing using space-time adaptive processing (STAP) under the Linux OS. The MITRE RT_STAP Benchmark version 1.1 is ported and executed on it, as well as on a cluster of six Sun SPARC workstations connected by a Myrinet network (the AFIT NOW), and on a IBM SP for comparison. Modifications to the RT_STAP benchmark source code are performed to accommodate the BLAS routines obtained from the US Department of Energy's Accelerated Strategic Computing Initiative, and the FFTPACK from the Netlib repository, allowing improvements in the sustained Gflops/sec rales. However, the Pile-of-PCs also reveals limited scalability as a result of severe communication overheads imposed by RT ST AP cornerturn operations. Analysis of experimental data indicates that the PC Cluster outperforms AFIT NOW but needs interconnection network improvements to be globally competitive to multicomputers such as the IBM SP.
LogP Modelling of List Algorithms
Authors: Amme W. , Braun P. , Löwe W. , Zehendner E.
Published: September 2022

We present techniques for distributing lists for processing on distributed and shared memory architectures. The LogP cost model is extended for evaluating the schedules for the given problems and architectures. We consider both bounded and unbounded lists. The theoretical results are confirmed by measurements on a KSR-1.
On the Effectiveness of the Scheduling Algorithm of the Dynamically Trace Scheduled VLIW
Authors: Souza A. F. de , Rounce P.
Published: September 2022

In a machine that follows the dynamically trace scheduled VLIW (DTSVLIW) architecture, VLIW instructions are built dynamically through a scheduling algorithm that can be implemented in hardware. These VLIW instructions are cached so that the machine can spend most of its time executing VLIW instructions without sacrificing any binary compatibility. This paper evaluates the effectiveness of the DTSVLIW instruction scheduling algorithm by comparing it with the first come first served (FCFS) algorithm, used for microinstruction compaction, and the Greedy algorithm, used by the Dynamic Instruction Formatting architecture. In order to perform these comparisons, we have performed experiments using the SPECint95 benchmark suite.
Investigating the Relative Performance of Static and Dynamic Instruction Scheduling
Authors: Tate Daniel , Steven Gordon , Findlay Paul
Published: September 2022

There are two distinct groups of research into ILP. Those that strongly favour static instruction scheduling and those that favour dynamic instruction scheduling. This paper introduces powerful static and dynamic scheduling models and combines them within the framework of a single simulation environment. Both individual models achieve respectable speedups; dynamic schedullng significantly out-performs static scheduling when an idealised processor model with perfect branch prediction is used. However, when a realistic branch predictor is substituted, the roles are reversed, and static scheduling achieves the higher performance. Similarly, static scheduling performs better in the absence of branch prediction or when processor resources are restricted. Finally, we combine static scheduling with out-of-order instruction issue. Disappointingly, when an ideal out-of-order processor is used, scheduled code fails to match the performance of unscheduled code. Furthermore, with realistic branch predictlon, out-of-order issue fails to improve the performance of scheduled code.
A Robust Causal Order Protocol
Authors: Lima George Marconi de A. , Macêdo Raimundo J. de A.
Published: September 2022

This paper presents a robust causal order protocol implemented for the BCG platform (Reliable Group Communication Base) developed at LaSiD/UFBA (Distributed System Laboratory at UFBA). It was designed using a symmetric message recovery approach in which any process of the group can detect and retransmit missing messages providing a reliable message recovery mechanism. Its algorithm, based on certain properties and structures of the BCG, makes the proposed protocol more flexible than similar protocols published to date. Data collected from experiments are also reported.
PAD Cluster: An Open, Modular and Low Cost High Performance Computing System
Authors: Bernal Volnys Borges , Kofuji Sergio Takeo , Sipahi Guilherme Matos , Anderson Allan G. , Lobo Netto Marcio
Published: September 2022

This work presents the PAD Cluster, the result of PAD Elebra Project. lt was built on COTS (commodity off-the shelf) components. lt is shown the hardware and software architecture of the cluster. Some performance results are presented in the implementation of an user level communication library. Cluster management tools for a single point of control are also presented.
Using Operand Factorization to Compress DSP Programs
Authors: Pannain Ricardo , Centoducatte Paulo , Araujo Guido
Published: September 2022

We propose a method for compressing programs running on embedded DSPs. Program expression trees are decomposed into opcode and operand sequences called patterns. We show that DSP program patterns have exponential frequency distribution. Based on that, we encode patterns using a mix of a variable-length and fixed-length codewords. A decompression engine is proposed, which converts patterns into uncompressed instruction sequences. The experimental results reveal an average compression ratio of 67% for typical DSP programs running on TMS320C25 processor. This ratio includes an estimate of the size of the decompression engine.
Sthreads: Multithreading for SCI clusters
Authors: Rehling Enno
Published: September 2022

Threads are in widespread use as a model for concurrent programming. In our effort to supply a broad range of tools for the SCI platform, we have created Sthreads, a library that simplifies the adaptation of programs written for the Pthreads library to SCI Cluster hardware. This paper presents the design decisions we made, and a performance evaluation comparing the Sthreads library to Pthreads.
Técnicas para Categorização de Padrões de Compartilhamento em Sistemas Software DSM
Authors: Castro M. C. S. de , Amorim C. L. de
Published: September 2022

ln this paper, we introduce a new categorization algorithm called RITMO to determime precisely sharing patterns in software distributed shared memory (DSM). RITMO is based on the page sharing state information generated at run-time by a finite state machine (FIESTA). RITMO categorizes dynamically pages according to their inherent sharing patterns in contrast with the induced sharing patterns used in current algorithms. The main advantage of this approach is to enable RITMO to categorize accurately irregular applications in which finegrain memory accesses often mask inherent sharing patterns making categorizations based on induced patterns inexact. Both FIESTA and RITMO are transparent to the programmer and do not require compiler or hardware assistance. Furthermore, they add no extra messages to the protocol and intrusion is kept extremely low. Through detailed execution-driven simulation of six benchmark applications running on TreadMarks with 8 processors we show that RITMO categorization is highly precise on classifying pages that are responsible for more than 93% of the application page faults, as either single-writer or migratory in tive out of six benchmarks. In both irregular applications tested, 50% (in Water-Nsq) and 8% (in Barnes2) of pages which correspond to 26% and 60% of the application page faults respcctively, have induced sharing patterns different from their inherent sharing patterns which were precisely determined by RITMO. Also, our results show that prefetching and forwarding could be efficiently implemented due to the RITMO accuracy, reducing remote data overheads from 14% (in BarnesTmk) up to 90% (in Em3d). As a result, the application execution time improved from 7% (Barnes2) to 38% (Em3d). Our conclusion is that RITMO based on FIESTA is a effcctive technique to improve software DSM performance in a large class of applications.
Cache na WWW: Limitações e Potencial
Authors: Murta Cristina Duarte , Almeida Virgílio A. F.
Published: September 2022

WWW caching systems are essential for Web performance and scalability. Web cache workloads and goals show important differences when compared with traditional caching systems, such as memory caches. This article points out and discusses these differences. In order to illustrate our discussion, we present characterization of ten workloads from Web caches. The analysis focuses on the parameters response size and access patterns. We discuss the influence of the characterized parameters in cache performance according to relevant metrics for the WWW and we show directions for the design of Web cache replacement policies.
Servidores Cache WWW em Arquiteturas Multiprocessadas
Authors: Paixão Goedson Teixeira , Meira Jr. Wagner , Sanches Fernando Caixeta
Published: September 2022

O grande crescimento em popularidade da World Wide Web tem motivado várias pesquisas com o objetivo de reduzir a latência observada pelos usuários. Os servidores cache têm se mostrado uma ferramenta muito importante na busca desse objetivo. Embora a utilização de servidores cache tenha contribuído para diminuir o tráfego na Internet, as estratégias de cooperação utilizadas na composição de grupos (clusters) de caches normalmente trazem uma degradação de desempenho aos servidores não sendo, por isso, escaláveis o suficiente para acompanhar o crescimento atual da WWW. Neste trabalho, propomos uma nova forma de cooperação entre servidores cache que não cause um impacto tão grande no seu desempenho, permitindo, assim, a criação de grupos de servidores cache que sejam capazes de crescer junto com a demanda dos seus usuários.
Effect of misoprostol on cervical transition pain in office hysteroscopy: Results of a tertiary center
Authors: ÖLMEZ Fatma , OĞLAK Süleyman Cemil , GÖKLÜ Mehmet Rıfat , TUNÇ Şeyhmus , ÖZER Mehmet
Published: September 2022

Objective: Office hysteroscopy is a method that has become increasingly popular because of its low complication rate, rapid recovery, and cost-effectiveness. Pain is the biggest obstacle to the successful completion of office hysteroscopy procedures. Thus, the present study aimed to investigate the efficacy of misoprostol in providing cervical ripening, and thus reducing pain during the cervical transition of hysteroscopy.

Methods: This research was conducted as an observational case-control study. Seventy-nine patients who underwent office hysteroscopy were included. Twenty-nine patients were administered 200 μg of vaginal misoprostol 4 h before office hysteroscopy, whereas the control group consisting of 50 patients was not provided with premedication for cervical dilatation. Patients were asked to rate their pain between 0 and 10 using the visual analog scale (VAS) 30 min after the procedure.

Results: VAS pain scores after diagnostic office hysteroscopy (3.61 ± 0.61) and operative office hysteroscopy (4.45 ± 0.82) were significantly lower in the misoprostol group than in the control group patients. None of the patients experienced serious side effects caused by misoprostol and requested to end the procedure.

Conclusion: A significant reduction in the VAS pain score was detected in patients who were administered 200 μg of vaginal misoprostol 4 h before office hysteroscopy. Misoprostol facilitated transition by providing cervical maturation and reduced the risk of pain-related unsuccessful hysteroscopy.
Sistemik immün-inflamasyon indeksinin ülseratif kolitteki önemi
Authors: ADANIR Haydar , AKINCIOĞLU Pırıl
Published: September 2022

Amaç: Bu çalışmada, ülseratif kolit (ÜK) hastalarında sistemik immün-inflamasyon indeks (Sİİ) düzeyi ile hastalık aktivitesinin yanı sıra tutulum yaygınlığı arasındaki ilişkiyi değerlendirmek amaçlandı.

Yöntemler: Akdeniz Üniversitesi Tıp Fakültesi Hastanesi Gastroenteroloji Polikliniği’nde ÜK tanısıyla takip edilen 272 hasta retrospektif olarak tarandı. Mayo endoskopik skoruna göre 82 hasta remisyonda, 190 hasta aktif hasta olarak kabul edildi. Aktif hasta grubu hastalığın tutulum yaygınlığı açısından Montreal sınıflamasına göre E1 (proktit), E2 (sol kolon tutulumu), E3 (yaygın kolit) şeklinde gruplandırıldı. Gruplar arasında C-reaktif protein (CRP), eritrosit sedimentasyon hızı (ESH), nötrofil-lenfosit oranı (NLO), trombosit-lenfosit oranı (PLO) ve Sİİ değerlerinin aktivasyon şiddeti ve tutulum yaygınlığı ile ilişkisi karşılaştırıldı.

Bulgular: CRP, ESH, NLO, PLO ve Sİİ değerlerinin remisyondaki hasta grubuna kıyasla aktif grupta belirgin olarak daha yüksek olduğu saptandı (p
Understanding Logical Evidence, With Lessons From The Paradoxes
Authors: Becker Arenhart Jonas R. ,   Philosophy Documentation Center
Published: September 2022

In this paper, I discuss the relation between logical theory and evidence in the context of an anti-exceptionalist approach to logic. I hold not only that current versions of anti-exceptionalism failed to appreciate the fact that logical evidence is theory laden, but also that benefits for the view are expected when we engage with the appropriate philosophy of science. I make the discussion more vivid by considering the cases of both the Liar and Russell paradoxes, and disputes between the classical and dialetheist approaches to them. Disputes between these parties involve different understandings of the logical terminology involved in the evidence (the paradoxes), and they illustrate how the data gets contaminated with theory. As a result of the discussion, I conclude that pragmatical considerations are better guides to evaluate disputes in such cases, with scientific fertility being the criterion of legitimacy for a logical system.
GOVERNANÇA CORPORATIVA E EXTERNALIDADES: UM OLHAR SOBRE O DESENVOLVIMENTO PLURIDIMENSIONAL NA AGENDA 2030
Authors: Olsson Giovanni , Kruger Silvana Dalmutt
Published: September 2022

O estudo teve por objetivo analisar a governança corporativa, na perspectiva de suas externalidades e sustentabilidade, diante das contribuições da Agenda 2030 da Organização das Nações Unidas na nova matriz de desenvolvimento pluridimensional. A pesquisa é de cunho exploratório, realizada por meio de revisão integrativa da literatura, com  abordagem qualitativa. A análise resgata a convergência de marcos teóricos da academia com a ação política articulada pela Organização das Nações Unidas, com novos atores internacionais, especialmente organizações não governamentais e corporações, em torno das externalidades negativas do contexto econômico e do consumo, que refletem em inúmeras preocupações com o futuro da humanidade. O Pacto Global e a Agenda 2030 evidenciam-se como um novo marco regulatório, com elevado potencial de convergência de práticas de governança e de sua replicação no meio empresarial. Os resultados indicam a necessidade do diálogo entre diversos atores públicos e privados, especialmente no contexto das externalidades, para nortear iniciativas em prol do desenvolvimento pluridimensional efetivamente inclusivo, ponderando os direitos humanos e a dignidade dos indivíduos, independente de localização geográfica, ideologias ou crenças.
A quem serve a educação “para todos”?
Authors: Bem Deborah , Gonçalves Josiane Peres
Published: September 2022

Esse texto pretendeu refletir sobre as contradições que permeiam a educação escolar, com ênfase no caso do Brasil. Nesse sentido, o intuito é refletir sobre a situação atual da educação brasileira inserida em uma sociedade regida pelo capital, bem como a sua estruturação histórica - que se estabeleceu através de marcadores de exclusão social como racismo, desigualdade de gênero, marginalização e outros – e sua intrínseca relação com a conjuntura política do país. Para tanto, realizou-se uma breve retomada histórica da educação escolar no país e uma, igualmente breve, análise da conjuntura política brasileira a partir do golpe de 2016 e quais os reflexos disso na escola – enfatizando o movimento “escola sem partido”. O referencial teórico que norteou esse texto foi o materialismo histórico-dialético sob orientação da pedagogia histórico-crítica.  Para finalizar, apresentou-se algumas possibilidades de luta e resistência, à luz da pedagogia histórico-crítica, que visam a superação desse quadro catastrófico que se instaurou no país.
A Rational Approach to Handle Uncertainty and Complexity in Marine Systems Design
Authors: Brett Per Olaf , Garcia Agis Jose Jorge , Ebrahimi Ali , Erikstad Stein Ove , Asbjørnslett Bjørn Egil
Published: September 2022

Years of volatile shipping market dynamics have intensified the need for more effective handling of uncertainty in conceptual and basic ship design processes. More recently, necessary climate remedial efforts in shipping have revealed the complexity associated with the facts-based selection of proper “green” technologies and ship design solutions, the control of their resulting extra costs and operational and commercial consequences. Naval architects and marine engineers and their ship design firms or shipyard affiliations, more than ever, have seen their expertise, knowledge, work practices, toolboxes and business concepts challenged - to the extent of capacity limits and perhaps beyond? Thus, the development of more advanced tools, more effective business concepts and efficient work procedures becomes increasingly important. Improved design processes must come, hand-with-hand, with new and refreshed expertise. This paper builds on the premise that uncertainty and complexity influence the effectiveness of the decision-making process in ship design. We argue, therefore, that to improve the way daily ship design activities are carried out it is necessary to better understand the influence of uncertainty and complexity on such transactions and to implement methods and tools to eliminate or reduce the associated detrimental effects on design quality and efficiency.

The purpose of this paper is to explore, contrast, discuss and provide quantitative facts as to what are these inherent uncertainties and complexities and how do they influence effective decision making relating to conceptual ship design approaches and their design firms’ competitiveness. This complementary research work combines, summarizes and reports the research findings from two recent finalized PhD Thesis; Effectiveness in Decision-Making in Ship Design under Uncertainty and Handling Ship Design Complexity to enhance Competitiveness in Ship Design.

The research work is well-grounded in the systems theory paradigm and this paper presents its results in the form of specific ways in which a revised systemic ship design approach can help ship designers and their firms to better handle uncertainty and complexity in their future dealings with a dynamic market situation and immature “greening” technologies based on the findings in the PhD Thesis.
An Area-Specific Survivability Assessment for Passenger Ships
Authors: Mauro Francesco , Vassalos Dracos
Published: September 2022

The survivability of a passenger ship after an accident is assessed by a probabilistic framework covering hazards like collisions and groundings. Such assessments are a key determinant  for the internal ship arrangement and layout, affecting ship design and operation, The framework pertains to static assessment, but it is common to use the same damage definitions for dynamic calculations. In the latter case, besides the breach characteristics, the environmental condition selection is of paramount importance. In the specific, irregular waves modelling, it is necessary to simulate the damage scenarios. In the common dynamic approaches to survivability, attention is paid to the significant wave height of the calculation, considering the wave period constant. The wave height is not always reflecting real scenarios but is derived from statistics of collisions (GOALS project). However, wave height and period influence ship dynamic in waves (in intact or damaged conditions), impacting survivability after damage. Aiming to a direct assessment of ship survivability and the probability of loss of lives determination in realistic operational scenarios, it is essential to properly study the influence of combined variations of wave height and periods and their occurrence. In the present study, dynamic simulations are carried out in site-specific conditions derived from the Global Wave Statistics. Critical cases are derived from conventional survivability analyses on a sample passenger ship. The same cases are then analysed using wave height and period combinations typical of the main sea areas of interest for passenger ships. This enhanced analysis allows to clearly identify the limiting environmental conditions for the critical damage cases, evaluating the effective survivability of the ship to a specific damage in an operational area.
Hilando luchas por el derecho a la educación: narrativas colectivas y personales para la inclusión desde el modelo social de la discapacidad
Authors: Calderón Almendros Ignacio , Rascón Gómez María Teresa
Published: September 2022

El presente trabajo pretende cuestionar y contribuir a la transformación de aquellas culturas, políticas y prácticas educativas que conducen a la exclusión al devaluarlas diferencias. Para ello se recuperan una serie de relatos y construcciones colectivas que abordan la diversidad humana y el derecho a la educación inclusiva, y que permiten salir de las fronteras de la normalidad, creando nuevas cartografías vitales y sociales dirigidas por el deseo. La metodología utilizada, que aúna procesos de investigación-acción participativacon investigación biográfica y narrativa, así como la envergadura del proyecto, nos permiten comprender las construcciones cotidianas y complejas así como los mecanismos decolaboración que ponen en práctica docentes, estudiantes y familias activistas que buscan el reconocimiento de la diversidad funcional en las escuelas. Las historias se entrelazan y construyen unas a otras, promoviendo saberes y acciones cargados de las experiencias duras,habitualmente invisibilizadas por la institución; esas acciones están cargadas de la emoción por promover movimientos sociales y cambios educativos. Asimismo, los resultados obtenidos evidencian que la conformación de las redes de apoyo mutuo y resistencia favorecenprocesos de resiliencia, apuntan a transformaciones estructurales y actúan en beneficio de todas las personas en las escuelas.
Programa de apoyo a la transición a la vida adulta en Andalucía para la juventud extutelada. Potencialidades y retos en los márgenes de la emancipación
Authors: Sevillano-Monje Verónica , Martín-Gutiérrez Ángela
Published: September 2022

Las investigaciones nacionales e internacionales han evidenciado los retos a los que tienen que enfrentarse la juventud tutelada y extutelada cuando alcanzan la mayoría deedad. Los programas de apoyo a la transición a la vida adulta reportan resultados positivos en los jóvenes que se encuentran en esta etapa. Sin embargo, son necesarias las evaluaciones continuas de estos recursos. Esta investigación tiene como objetivo evidenciar las potencialidades y los retos del programa de Alta Intensidad Mayoría de Edad +18 de la Junta de Andalucía (España) que desarrolla una entidad sevillana, un recurso que no ha sido evaluado de manera exhaustiva en sus 20 años de recorrido. Para ello, se realizaron entrevistas semiestructuradas a 19 profesionales (orientadores, directores, educadores e informantes clave) y 7 jóvenes con trayectorias de éxito egresados del programa. Los resultados muestran que las potencialidades del programa son la valoración positiva del mismo, el proceso de acompañamiento socioeducativo y la capacitación social, académica y laboral de los jóvenes. Con respecto a los retos se destacan los recursos institucionales, la situación de partida de los jóvenes al acceder al programa y las funciones y dedicación que tienen los orientadores. Se concluye que el programa contribuye a la preparación a la vida adulta de la juventud extutelada, dotándola de las herramientas necesarias para la emancipación. No obstante, tambiénse deja patente la necesidad de aumentar los recursos (humanos, estructurales y temporales) para mejorar la intervención de los profesionales.
Clinical significance of copeptin as an early predictor of renal graft dysfunction in renal transplant recipients
Authors: Lee Yoo Jin , Heo Chang Min , Park Sihyung , Kim Il Hwan , Park Jin Han , Ko Junghae , Park Bong Soo , Kim Yang Wook
Published: September 2022

Background: Copeptin is the carboxyl-terminal part of the vasopressin precursor protein, and its concentration is an independent predictor of the onset of chronic kidney disease and a rapid decline in the glomerular filtration rate. The glomerular filtration rate is regarded as the best indicator of kidney transplant function and is a predictor of graft and patient survival. We investigated the clinical significance of copeptin as an early predictor of renal graft dysfunction in renal transplant recipients.Methods: We measured serum creatinine, cystatin C, and copeptin concentrations in renal transplant recipients on the day of their operation, as well as on postoperative days 3, 7, 30, and 365. Acute rejection was defined as a sudden decrease in renal function accompanied by histological changes.Results: Eight renal transplant recipients were enrolled in the study from July 2018 to December 2019. Four patients experienced histologically confirmed transplant rejection. All four cases involved acute T-cell rejection. No significant correlation was found between the copeptin level and the presence or absence of rejection at any time point. In subgroup analyses, changes in creatinine, the estimated glomerular filtration rate, cystatin, and copeptin did not show statistical significance.Conclusions: We anticipated that copeptin would be useful to identify individuals at high risk of transplant rejection; however, our study failed to show an association. Further research will be needed to overcome the limitations of this study.
Rectal Ozone therapy role in the quality of life of a Heart Failure patient.
Authors: Cespedes-Suarez Javier , Conde-Perez Pedro , Sanchez-Arnot Joao , Calunga-Fernandez Jose Luis , Rodriguez-de-Celis Yisel , Rodriguez-Perellada Carmen Luisa
Published: September 2022

Heart Failure (HF) is a nosological entity with multiple pathophysiological aspects including the phenomenon of Ischemia-Reperfusion (I/R) 6. It is reported to be a heterogeneous syndrome resulting from structural damage to the myocardial fiber which occurs through various mechanisms. On the other hand, ozone therapy has shown a protective role against I/R phenomenon observed in clinical situations such as HF and circulatory shock. On this point, our objective was to evaluate rectal ozone therapy effect in a patient with decompensated heart failure and diabetes mellitus type 2, treated at our Cardiozono Medical Center, in Luanda, Angola.
Variables to be measured before and after rectal ozone therapy were: functional classification, biochemical parameters and left ventricular ejection fraction. As a result, rectal ozone therapy was able to improve the clinical condition of our patient, the renal and hepatic function tests were also improved and the ejection fraction of the left ventricle was significantly increased. As a conclusion we have that rectal ozone therapy, complementary to conventional treatment, improved the quality of life of this patient, as well as, the ejection fraction of the left ventricle was significantly increased, reflecting the cardioprotective effect of rectal ozone therapy.
Use of ozone therapy to control chronic pain in equine laminitis.
Authors: Silva Fransael Franklyn Araújo , Do Nascimento Eduardo Michelon , De Paula Liliane Aparecida Oliveira , Sandri Deborah , Pagliosa Geane Maciel , Guirro Erica Cristina Bueno do Prado , Lopes Maristela de Cássia Seudo
Published: September 2022

Purpose. Laminitis is the inflammation of the dermal and epidermal blades of the hull. The use of ozone has already demonstrated promising effects in horses, through postoperative analgesia, antioxidant effect in athletic animals and even chronic laminitis. Thus, the objective of this article is to describe the use of ozone therapy in different methodologies (intramuscular points, acupoints and footbath) in the aid of pain control in an equine with chronic laminitis.
Methods. An equine male, 513 kg, English Thoroughbred, seven years old, was referred with severe claudication with 20 days of evolution, after transportation of approximately 780 km, after its acquisition. Upon clinical examination, the animal demonstrated degree 4 of claudication (scale from 1 to 4) and alternating support of the thoracic limbs. The radiographic examination showed rotation of the distal phalanx in all digits and the diagnosis was chronic laminitis. The initial therapeutic protocol was meloxican (0.6 mg/kg, SID, IM) for two days, flunixin meglumine (1.1 mg/kg, SID, IM) for three days, followed by firocoxib (0.1 mg/kg, SID, PO) for more than 120 days. During all the treatment, the use of omeprazole (4 mg/kg, SID, PO) and acepromazine (0.01 mg/kg, BID, IM) was maintained, as well as corrective hoof trimming and bandaging with soft material on the sole. In order to promote better analgesia and greater patient comfort with minimal adverse effects, the use of firocoxib was interrupted and 20 ozone therapy sessions were instituted. The protocol consisted of bilateral administration of oxygen / ozone (40 ug/ml, IM) in pre-scapular, scapular, post-scapular and acupuncture points (LI11 POINT), as well as ozonized footbath for hoof cleaning.
Results. Two months after the beginning of treatment the patient showed significant improvement of body condition and better walking with evolution to score 2 of claudication, without any side effect.
Discussion. The pain control verified in this patient can be explained by the action of ozone in the inflammatory cascade, that is, altering the degradation of arachidonic acid and with it the inhibition of pro-inflammatory cytokines.
Conclusion. We concluded that the ozone therapy technique was satisfactory in controlling chronic laminitis pain.
Protective effect of rectal ozone therapy against oxidative stress in immunoglobulin A deficiency.
Authors: Díaz Luis Jacqueline , Menéndez Cepero Silvia , Machado Cano María Julia , Fariñas Rodríguez Lucia , Roque Morgado Maikel
Published: September 2022

The excess in the production of free radicals produces an imbalance between the prooxidants and antioxidants in favor of the former; which causes loss of redox control signaling and damage to biomolecules such as proteins, lipids and deoxyribonucleic acid. When homeostasis is altered in the redox metabolism of cells that participate in the immune response, they usually evolve into a situation of oxidative stress that facilitates cell dysfunction and death. The objective of our work was to study the effect of ozone on the regulation of redox status, necessary to maintain normal immune function in patients with immunoglobulin A deficiency. Patients and methods: The Research Ethics Committee conducted and approved a clinical trial and whose patients gave informed consent for inclusion. Sixty patients were randomly assigned to two groups: one receiving ozone rectal insufflation (study group-SG) and the second using Hebertrans® (control-GC group), subcutaneously. Pro-oxidant parameters (malondialdehyde-MDA and advanced oxidation protein products-AOPP) and antioxidant parameters (superoxide dismutase1-SOD1, catalase-CAT, glutathione peroxidase-GPx and total antioxidant capacity of serum) were measured. They were measured at the beginning and one month after treatment. Results: In the SG the MDA and the APOP of patients ?15 years, decreased significantly (p = 0.000) with respect to the control group. SOD1 in the SG increased in patients ?15 years (p = 0.006) and from 16 to 30 years of age (p = 0.040) with respect to GC. CAT in patients ?15 years of the SG increased significantly (p=0.001) with respect to initial values. The final result of the total antioxidant capacity in the SG was significantly (p=0.000) higher in patients ? 15 years, similar results were obtained in GPx (p=0.013). Conclusions: With ozone therapy, beneficial effects on the oxidation reduction balance were achieved. Medical ozone therapy may be an additional treatment option, for immunoglobulin A deficient patients with oxidative stress.
Study of left ventricle ejection fraction and natriuretic peptides in patients with heart failure treated with systemic medical ozone.
Authors: Cespedes-Suarez Javier Cecilio , Conde-Perez Pedro , Calunga-Fernandez José Luis , Martin-Serrano Yanisley , Carballosa-Peña María Rosa , Arenas-Falcon Benjamin , Rodriguez-Parrellada Carmen Luisa
Published: September 2022

Heart Failure (HF) is a prevalent disease and is a frequent reason for consultation. It is a complex entity that presents multiple pathophysiological aspects, and it is sometimes difficult to establish an adequate diagnosis, since its signs and symptoms may overlap with those of other diseases. For a better diagnosis and control of this pathology, it is currently essential to follow up through echocardiography and the determination of natriuretic peptides, since this increase significantly in patients with heart failure, having a negative predictive value for these patients. For this reason, we set out to study the effects of rectal ozone treatment on cardiac contractility and natriuretic peptides in patients with heart failure.
We conducted a study with two groups of 6 patients each, who had a diagnosis of Class II-III Chronic HF according to the functional classification of the New York Heart Association (NYHA) and the American Cardiology College / American Heart Association (ACC/AHA), Echocardiogram with a Left Ventricular Ejection Fraction (LVEF) less than 50% and dosage of Elevated Natriuretic Peptides. We administer ozone rectally through insufflation, with a 20-session protocol (increasing concentration and volume every 5 sessions until reaching 300 ml), performing the following treatment scheme: 5 sessions with 25 ?g/ml concentration and 200 ml volume, 5 sessions with 30 ?g/ml and 250 ml, 5 sessions with 35 ?g/ml and 300 ml and the last 5 sessions with 40 ?g/ml and 300 ml volume.
As a result, it was obtained that ozone treatment through rectal insufflation, through its anti-inflammatory and immunomodulatory effects, was able to improve the clinical status of the study group, significantly reducing below 50% the values of the natriuretic peptide that was elevated at the beginning and the ejection fraction of the left ventricle was significantly increased. Concluding in this way that ozone administration by rectal route as a complement to conventional treatment significantly increased the ejection fraction of the left ventricle, and decreased the values of natriuretic peptide, significantly improving the quality of life of these patients.
Occurrence of blaKPC gene in clinical isolates of Pseudomonas aeruginosa from Brazil
Authors: Lima Jailton Lobo da Costa , Ximenes Rafael Matos , Maciel Maria Amélia Vieira
Published: September 2022

Pseudomonas aeruginosa is one of the main microorganisms causing healthcare-related infections. The rise of carbapenem-resistant P. aeruginosa (CRPA) strains has become a serious public health problem. Dissemination of the enzyme Klebsiella pneumoniae carbapenemase (KPC) encoded by the blaKPC gene cause the inactivation of β-lactam antibiotics being one of the mechanisms involved in this resistance. Given the above, the objective of this review was to evaluate the occurrence of the blaKPC gene in clinical isolates of P. aeruginosa in Brazil. For this, the online databases used were: Lilacs, SciELO and PubMed. The search for articles included articles published from 2012 to 2020, using the following keywords: blaKPC (KPC), Pseudomonas aeruginosa, and Brazil (in Portuguese and English). Initially, 30 publications eligible for inclusion in this review were identified. After the first analysis, two articles were excluded due to duplication. Subsequently, titles and abstracts were evaluated, 15 articles were excluded because they did not fit the theme, and 13 articles that met the inclusion criteria were read in full. In these studies, the presence of the blaKPC gene was investigated in 566 clinical isolates of P. aeruginosa in Brazil, with 86 (15.2%) positive samples found. Pernambuco was the state with the highest number of articles and positive samples, respectively, 38.5% (5/13), and 65.1% (56/86). This study reinforces the need to investigate the occurrence of this gene in all regions of the country in CRPA, aiming to understand how its dissemination occurs and to promote prevention and therapeutic strategies.
Calf circumference is an independent predictor of postoperative complications in the surgical treatment of head and neck cance
Authors: Oliveira Neyara dos Santos , Reis Tercio Guimarães , Carneiro Adriele Luana , Souza Suzane Pereira , Serra Maurício Gomes da Silva , Bessa Júnior José de , Oliveira Márcio Campos
Published: September 2022

Introduction: The prevalence of malnutrition is high among head and neck cancer (HNC) patients and negatively impacts their quality of life, treatment, and survival rates. Objective: To identify preoperative nutritional variables capable of predicting postoperative complications in surgically treated HNC patients. Methods: This was a prospective cohort study of HNC patients referred for surgery as initial treatment. Results: Sixty patients were included in the study; they had a median age of 65.5 years, were mostly men (85%), and most had low education levels (90%) and low household income (78.3%). The incidence rate of severe postoperative complications (grades II, III, IV, and V according to the Clavien-Dindo grading system) was found to be 50%. The nutritional variables under investigation, namely calf circumference (CC), triceps skinfold, body mass index, and adductor pollicis muscle thickness were shown to predict postoperative complications in HNC patients, especially CC, which was found to be an independent predictor of complications (OR=0.8; 95%CI: 0.65–0.96). Each 1-cm increase in calf circumference was associated with a 20% decrease in the risk of postoperative complications. Conclusion: Our findings show the nutritional variables studied are useful in the prognostic assessment of HNC surgery.
Validação de um procedimento operacional padrão para higienização oral de pacientes intubados e traqueostomizados
Authors: Matos Bruno Augusto Barros e , Maia Margani Cadore Weis , Souza Verusca Soares de , Ribeiro Mara Regina Rosa , Oliveira João Lucas Campos de
Published: September 2022

Introdução: Em Unidades de Terapia Intensiva, a higienização bucal é ação de cuidado diretamente relacionada à segurança do paciente e qualidade do cuidado, sendo uma das principais formas de prevenção da Pneumonia Associada à Ventilação Mecânica. Apesar disso, as recomendações e a padronização sobre a higienização bucal entre pacientes críticos são difusas. Objetivo: Construir e validar um procedimento operacional padrão (POP) para higiene bucal realizada pela enfermagem a pacientes intubados e traqueostomizados em Unidade de Terapia Intensiva (UTI). Métodos: Estudo metodológico desenvolvido em cinco etapas: subsídio técnico-científico; construção do POP; recrutamento e seleção de experts; validação de face e conteúdo do POP e apresentação da versão final. O POP foi submetido à validação por juízes com expertise acadêmica e/ou clínica (n=13) de todas as regiões do Brasil, os quais apreciaram os critérios de validade: Abrangência, Clareza, Coerência, Criticidade, Objetividade, Redação científica; Relevância, Sequência e Unicidade. Foram calculados os Índices de Validade de Conteúdo (IVC) de cada critério, item do POP e o IVC geral. Resultados: Os experts eram enfermeiros(as) (38,5%), cirurgiãs-dentistas (38,5%), médicos(as) (15,4%) e fisioterapeuta (7,7%). Nenhum item do POP obteve IVC inferior a 0,80. O IVC geral foi de 0,95 e sugestões dos experts foram majoritariamente acatadas (78,6%). A versão final, disponível como infográfico, contempla ilustrativamente as etapas do processo de higienização bucal do paciente intubado e traqueostomizado. Conclusão: O POP alcançou validade de face e conteúdo satisfatória. A versão validada possui 43 itens processuais para higiene bucal de pacientes intubados e traqueoestomizados.