bluuebunny/crossref_metadata_2025 huggingface dataset:
The Oswestry-Bristol Classification
Authors: Sharma Nikhil , Brown Ashley , Bouras Theodoros , Kuiper Jan H. , Eldridge Jonathan , Barnett Andrew
Published: December 2019

Aims

Trochlear dysplasia is a significant risk factor for patellofemoral instability. The Dejour classification is currently considered the standard for classifying trochlear dysplasia, but numerous studies have reported poor reliability on both plain radiography and MRI. The severity of trochlear dysplasia is important to establish in order to guide surgical management. We have developed an MRI-specific classification system to assess the severity of trochlear dysplasia, the Oswestry-Bristol Classification (OBC). This is a four-part classification system comprising normal, mild, moderate, and severe to represent a normal, shallow, flat, and convex trochlear, respectively. The purpose of this study was to assess the inter- and intraobserver reliability of the OBC and compare it with that of the Dejour classification.

Methods

Four observers (two senior and two junior orthopaedic surgeons) independently assessed 32 CT and axial MRI scans for trochlear dysplasia and classified each according to the OBC and the Dejour classification systems. Assessments were repeated following a four-week interval. The inter- and intraobserver agreement was determined by using Fleiss’ generalization of Cohen’s kappa statistic and S-statistic nominal and linear weights.

Results

The OBC showed fair-to-good interobserver agreement and good-to-excellent intraobserver agreement (mean kappa 0.68). The Dejour classification showed poor interobserver agreement and fair-to-good intraobserver agreement (mean kappa 0.52)

Conclusion

The OBC can be used to assess the severity of trochlear dysplasia. It can be applied in clinical practice to simplify and standardize surgical decision-making in patients with recurrent patella instability. Cite this article: Bone Joint J 2020;102-B(1):102–107
A 15-year follow-up of transfemoral amputees with bone-anchored transcutaneous prostheses
Authors: Hagberg Kerstin , Ghassemi Jahani Shadi-Afarin , Kulbacka-Ortiz Katarzyna , Thomsen Peter , Malchau Henrik , Reinholdt Carina
Published: December 2019

Aims

The aim of this study was to describe implant and patient-reported outcome in patients with a unilateral transfemoral amputation (TFA) treated with a bone-anchored, transcutaneous prosthesis.

Methods

In this cohort study, all patients with a unilateral TFA treated with the Osseointegrated Prostheses for the Rehabilitation of Amputees (OPRA) implant system in Sahlgrenska University Hospital, Gothenburg, Sweden, between January 1999 and December 2017 were included. The cohort comprised 111 patients (78 male (70%)), with a mean age 45 years (17 to 70). The main reason for amputation was trauma in 75 (68%) and tumours in 23 (21%). Patients answered the Questionnaire for Persons with Transfemoral Amputation (Q-TFA) before treatment and at two, five, seven, ten, and 15 years’ follow-up. A prosthetic activity grade was assigned to each patient at each timepoint. All mechanical complications, defined as fracture, bending, or wear to any part of the implant system resulting in removal or change, were recorded.

Results

The Q-TFA scores at two, five, seven, and ten years showed significantly more prosthetic use, better mobility, fewer problems, and an improved global situation, compared with baseline. The survival rate of the osseointegrated implant part (the fixture) was 89% and 72% after seven and 15 years, respectively. A total of 61 patients (55%) had mechanical complications (mean 3.3 (SD 5.76)), resulting in exchange of the percutaneous implant parts. There was a positive relationship between a higher activity grade and the number of mechanical complications.

Conclusion

Compared with before treatment, the patient-reported outcome was significantly better and remained so over time. Although osseointegration and the ability to transfer loads over a 15-year period have been demonstrated, a large number of mechanical failures in the external implant parts were found. Since these were related to higher activity, restrictions in activity and improvements to the mechanical properties of the implant system are required. Cite this article: Bone Joint J 2020;102-B(1):55–63
Retextualização, correção textual e trabalho docente: alguns apontamentos
Authors: Silva Cícero Da
Published: December 2019

Neste artigo, objetiva-se discutir processos de retextualização, correção textual e trabalho docente envolvendo a produção escrita na escola. A abordagem do objeto de investigação parte de uma perspectiva de análise interpretativista, sendo a pesquisa de natureza bibliográfica, fundamentada nos estudos dos gêneros do discurso na perspectiva bakhtiniana (BAKHTIN, 2006), com ênfase na retextualização (DELL’ISOLA, 2007; MARCUSCHI, 2007; SILVA; ANDRADE; MOREIRA, 2015), nas tipologias de correção e no trabalho docente envolvendo a produção textual (SERAFINI, 1995; FIAD, 2009; GONÇALVES, 2009; RUIZ, 2010; GASPAROTTO; MENEGASSI, 2013). Com base nos resultados da pesquisa, pode-se afirmar que a retextualização é um processo que faz parte do cotidiano envolvendo a comunicação (oral ou escrita) em diferentes esferas sociais, em especial, a produção textual em sala de aula. Ademais, as intervenções docentes durante o processo de produção escrita devem ser articuladas com a reescrita de textos do gênero alvo da produção e esta deve assumir lugar de destaque nesse processo, favorecendo a interlocução, a reflexão coletiva, a aprendizagem dos parceiros em sala de aula e a ampliação da capacidade comunicativa dos aprendizes em processo de formação.
Rap: a voz da resistência em sala de aula
Authors: Oliveira Valdeci Batista de Melo , Boniatti André
Published: December 2019

Este artigo apresenta uma proposta de aplicação didática de letras do rap nacional, para as últimas séries do Ensino Fundamental, inserindo-o na escola, de modo a valorizar esse gênero poético/musical, compreendido, aqui, como forma de expressão e resistência dos segmentos juvenis e jovens da classe social trabalhadora. Essa abordagem didática do rap também se justifica por acreditarmos que o estilo musical traz para o ambiente escolar, ainda no calor da hora, a efetividade das periferias de onde esses grupos provêm. Na sala de aula, as práticas, os desafios, as lutas, os medos e as esperanças dessa efetividade, plasmada no rap, contêm energias que podem ser força motriz para os alunos problematizá-la questioná-la e ultrapassá-la, quando for possível. Para além da apreciação meramente gustativa o rap pode também proporcionar momentos de debate e de reflexão sobre os espaços de vivências, práticas e valores da vida social e seu entorno. Com a aplicação desta proposta julgamos também poder incentivar a leitura literária e a produção escrita dos alunos e colaborar para que eles encontrem a si mesmos, para além dos estreitos roteiros e estereótipos traçados pelo “establishment”, e reciclem seu aparato cognitivo-afetivo, percebendo condições de possiblidades dentro da divisão internacional do trabalho, imposta a países como o Brasil. Para essa discussão, inicialmente são abordados, de forma sucinta, alguns aspectos referentes à escola, à leitura e às contradições existentes nessa instituição secular, com base teórica em Gnerre (1994), Soares (2005), Orlandi (1998) e Zilbermam (1999). Em seguida, destaca a origem do rap, suas peculiaridades e possibilidades de abordagens pedagógicas, tomando como base os estudos de Duarte, Guimarães e Andrade (1999), Fonseca (2011), entre outros. Na sequência, duas letras de rap nacional são analisadas e complementadas com sugestões de encaminhamentos metodológicos, finalizando com algumas considerações sobre o trabalho aqui exposto.
O ético e o estético no ensino de literatura: o sujeito e sua experiência
Authors: Barbosa Everton Almeida , Cocco Marta Helena
Published: December 2019

Neste artigo reunimos reflexões sobre o ensino de literatura, enfatizando a percepção do mundo como aspecto importante na preparação para a leitura da palavra. Essa proposição tem o intuito de oferecer um complemento aos estudos e pesquisas centradas no aluno/leitor e em sua relação direta com o texto, direcionando as reflexões para a relação eu/outro e para a figura do professor. O artigo consiste em uma discussão teórica, baseada em relatos de experiência de Paulo Freire (1989) e Tzvetan Todorov (2006). Partindo da afirmação de Freire de que a leitura de mundo vem antes da leitura da palavra, procuramos definir o status das atividades ética e estética, a partir de Mikhail Bakhtin (2006), mostrando os limites entre elas e como essa reflexão pode auxiliar no ensino de leitura do texto literário. Em outra via, a partir dos relatos de Freire e Todorov, propomos uma reflexão sobre o conceito de “experiência”, segundo Walter Benjamin (1994) e Jorge Larrosa (2014), no intuito de evidenciar a necessidade de afirmação do sujeito autor/leitor/professor.
Multi-channel residual network model for accurate estimation of spatially-varying and depth-dependent defocus kernels
Authors: Cao Yanpeng , Ye Zhangyu , He Zewei , Yang Jiangxin , Cao Yanlong , Tisse Christel-Loic , Yang Michael Ying
Published: December 2019

Digital projectors have been increasingly utilized in various commercial and scientific applications. However, they are prone to the out-of-focus blurring problem since their depth-of-fields are typically limited. In this paper, we explore the feasibility of utilizing a deep learning-based approach to analyze the spatially-varying and depth-dependent defocus properties of digital projectors. A multimodal displaying/imaging system is built for capturing images projected at various depths. Based on the constructed dataset containing well-aligned in-focus, out-of-focus, and depth images, we propose a novel multi-channel residual deep network model to learn the end-to-end mapping function between the in-focus and out-of-focus image patches captured at different spatial locations and depths. To the best of our knowledge, it is the first research work revealing that the complex spatially-varying and depth-dependent blurring effects can be accurately learned from a number of real-captured image pairs instead of being hand-crafted as before. Experimental results demonstrate that our proposed deep learning-based method significantly outperforms the state-of-the-art defocus kernel estimation techniques and thus leads to better out-of-focus compensation for extending the dynamic ranges of digital projectors.
Electromagnetically induced holographic imaging using monolayer graphene
Authors: Hafiz Asad , Qamar Sajid
Published: December 2019

Graphene exhibits remarkable optical and electronic properties when interacts with electromagnetic field. These properties play a vital role in a broad range of applications, such as, optical communication, optical storage, biomedical imaging and security purposes. Based on electromagnetically induced grating (EIG), we study lensless holographic imaging via quantized energy levels of two-dimensional (2D) monolayer graphene model. We observe that by exploiting electromagnetically induced grating (EIG), holographic interference patterns via electromagnetically induced classical holographic imaging (EICHI) and, non locally, electromagnetically induced quantum holographic imaging (EIQHI) can be obtained in the infrared range (THz) of the spectrum. We notice that for EIQHI one can obtain image magnification using monolayer graphene via manipulation of certain controllable parameters. The scheme provides an experimentally viable option for the classical and quantum mechanical holographic imaging and possibilities for the design of graphene-based quantum mechanical devices which can have many applications.
Synthesis of Formic Acid Catalyzed and Cyclized Novel Modified Route for N,7-diphenyl-7H-benzo[7,8]chromeno-[2,3-d]pyrimidin-8-amine Derivatives and Study of their Antimicrobial Profile
Authors: Bhola Y. , Dodeja K. , Dholaria P. , Naliapara Y.
Published: December 2019

A new series of N,7-diphenyl-7H-benzo[7,8]chromeno[2,3-d]pyrimidin-
8-amine derivatives was synthesized using formic acid as catalyzed
and solvent. The structures of new derivatives were confirmed by the
spectral data and elemental analyses. Moreover, antimicrobial and
antifungal activities has been carryout using S. aureus, S. pyogenes, E.
coli, P. aeruginosa, C. albicans, A. niger and drugs nystatin, greseofulvin,
ciprofloxacin, chloramphenicol for all the present compounds
Regression Analysis and Docking Study of 4-Quinolylhydrazone Based Compounds as Antituberculosis Agents
Authors: Bisen C.V. , Patle M.R. , Patle R.M.
Published: December 2019

In present study, at the beginning, the molecules whose biological properties are known are well-thought-out as a known set for regression analysis model building purpose. Using the Datawarrior software the descriptors were calculated for known set. Novel substituted 4-hydrazinylqunoline molecules were designed, improved and their descriptors were calculated. Morever, the regression analysis model was used to determine the biological activities of these new molecules. Along with this, the inhibition studies for 1QPQ and 1KNC by molecular docking method were also carried out to validate the therapeutic nature of these molecules. Accordingly, it can be concluded that these moieties on further studies may evident to be therapeutic representative against Mycobacterium tuberculosis.
Proposta de um modelo geométrico e computacional para simulação de fluência estática em concretos asfálticos
Authors: De Oliveira Junior Marcone , De Farias Márcio Muniz , Rodrigues Igor Augusto
Published: December 2019

Neste trabalho, os autores buscam representar, de forma simplificada, o esqueleto sólido correspondente aos agregados graúdos componentes de uma mistura asfáltica, a fim de incorporá-los na modelagem numérica do material via Método dos Elementos Finitos. Para isso, são analisadas a granulometria e a forma dos agregados graúdos e consideradas essas características na modelagem geométrica do problema, fazendo uso de modelos com empacotamentos randômicos gerados tridimensionalmente. Do ponto de vista constitutivo os agregados graúdos são considerados sólidos elásticos lineares e a Matriz de Agregados Finos (MAF) é considerado um material contínuo viscoelástico. A fim de validar o modelo, são comparados resultados experimentais de ensaios de fluência estática com ensaios virtuais simulados utilizando a técnica descrita, apresentando resultados bastante satisfatórios.
es-cueto, o el ensayo como distinción
Authors: Surghi Carlos
Published: December 2019

El presente texto despliega una lectura del ensayista argentino Sergio Cueto. Partiendo de su último libro, Intimidad de las cosas (2018), es que nos proponemos relevar las diversas características del ensayo entendido como distinción, es decir, como modo de singularidad en la escritura. Para ello nuestro trabajo estudia la relación entre pensamiento y expresión, que en nuestro autor se evidencia no solo en sus libros más recientes, Cinco retratos (2010), Kafka. Una construcción (2009), sino también en sus primeros libros: Seis estudios girrianos (1993), Maurice Blanchot. El ejercicio de la paciencia (1997). Analizamos, entonces, lo que hemos identificado como orientaciones constantes en la escritura de Cueto, las que van desde su interés por el interrogante que suponen las cosas como pregunta filosófica, hasta la poesía entendida en tanto que expresión de lo real, pasando también por el humor como pensamiento de la extravagancia, o la música como advenimiento de una experiencia imposible.
Raúl Tuñón: zona de pasajes
Authors: Rogers Geraldine
Published: December 2019

Propongo pensar los vínculos entre crónica y poesía como un rasgo fundamental y duradero de la escritura de Raúl Tuñón, orientada desde temprano a la exploración activa de formas reversibles e impuras que transitan entre lo poético y lo prosaico, el arte y la vida, lo real y lo imaginario. A partir de un corpus formado por poemas de los años 1930 y crónicas poco conocidas e inéditas fuera del soporte periodístico, considero su escritura como una zona de múltiples pasajes donde dos modalidades famosamente contrastadas por Mallarmé, poesía y reportaje, convergen y divergen, en dinámica tensión.
FINALIZANDO UM ANO DE TRABALHO, CONSTRUINDO UM PERIÓDICO CIENTÍFICO DE QUALIDADE
Authors: Oliveira Anselmo Gomes de , Silveira Dâmaris
Published: December 2019

Ao publicarmos o último número do volume 31, estaremos encerrando mais um ano de atividades do periódico Infarma - Ciências Farmacêutica. Neste momento gostaríamos de registrar nossos sinceros agradecimentos a todos: aos autores, que confiam que os resultados de seu trabalho será analisado da melhor forma possível antes de ser publicado; aos revisores, editores associados e membros do corpo editorial, que dedicam um tempo precioso para analisar as submissões e dar os encaminhamentos necessários para que o que for publicado tenha a qualidade almejada; a Diretoria e Conselheiros do Conselho Federal de Farmácia, que apoiam e dão subsídios para a publicação desse periódico, que tem completa autonomia nas decisões editoriais.
PREVALÊNCIA DE ENTEROPARASITOSE E SUA ASSOCIAÇÃO COM PERFIL HEMATOLÓGICO E BIOQUÍMICO EM ADULTOS EM CAMETÁ, PARÁ, BRASIL
Authors: Teixeira Lídia Mendes da Silva , Loiola Bárbara Roberta da Costa , Lima Enzo Pantoja , Mello Amanda Gabryelle Nunes Cardoso
Published: December 2019

A prevalência de enteroparasitose e sua associação com perfil hematológico e bioquímico, em adultos de ambos os gêneros, na faixa etária 18 e 65 anos, residentes na cidade de Cametá, Brasil, foi avaliada, por meio de um estudo prospectivo, quantitativo e transversal. Foram coletadas amostras de 76 individuos para exames parasitológicos, hemogramas e bioquímicos. Em 18 amostras (23,68% dos participantes) não foi detectada qualquer infecção por enteroparasita e 58 (76,31%) apresentaram helmintos e/ou protozoários. Quanto às alterações hematológicas, houve uma leve diminuição nos níveis de hemoglobina, hematócrito, VCM, HCM e aumento de leucócitos e segmentados, porém não significativos quando correlacionados com a presença dos parasitas. No que se refere aos parâmetros bioquímicos, não houve diferenças significativas entre o grupo controle (n=18) e os participantes positivos (n=58) do estudo. Entretanto, foi observado um aumento significativo nos níveis de triglicerídeos, colesterol total e fração LDL (p<0,0001) dos participantes positivos em relação aos negativos. Das 58 amostras positivas, 40 estavam infectadas por apenas um enteroparasita e 18 por dois ou mais parasitas. Independentemente do número, apenas alterações bioquímicas foram observadas, sugerindo que o parasita utiliza as lipoproteínas plasmáticas do hospedeiro como veículos lipídicos, para promover uma resposta de fase aguda.
Effects of Early Warning Score (EWS) Tutorial Simulation on Nurses' Knowledge and Clinical Performance
Authors: Damayanti Roshy , Trisyani Yanny , Nuraeni Aan
Published: December 2019

Background: The Early Warning Score (EWS) system has been recommended for early identification tool of deterioration. However, its implementation has not been optimal; one of which is due to the low level of knowledge and understanding of EWS among nurses.Purpose: This study aimed to determine the effects of EWS tutorial simulation on nurses’ knowledge and clinical performance.Methods: This study employed a pretest posttest quasi-experimental design with a control group. Purposive sampling was used to recruit the samples of 42 respondents each in the intervention group and control group. The data were collected using the questionnaires to measure the knowledge and clinical performance, and analyzed using Chi square, Wilcoxon and Mann-Whitney tests.Results: The results showed that there were differences in the pre-test and post-test of knowledge and clinical performance in the intervention group and control group (p<0.001). There was also a significant difference in clinical performance between the intervention group and the control group (p<0.001). However, no significant difference in knowledge was found between.Conclusions: Tutorial simulation of EWS had an effect on increasing nurses’ clinical performance. Although there was no significant difference in knowledge between the intervention group and the control group, but the intervention group showed a better value than the control group. EWS tutorial simulation can be used as one of the training methods to increase nurses' knowledge and clinical performance in EWS.
The Quality of Life of Women with Cervical Cancer in Indonesia: A Cross-Sectional Study
Authors: Afiyanti Yati , Wardani Ice Yulia , Martha Evi
Published: December 2019

Background: Cervical cancer have significant impacts on the quality of life (QOL) of the women experiencing it. Limited studies are exploring QOL among Indonesian women diagnosed with cervical cancer.Purpose: This study aimed to investigate the QOL of women with cervical cancer who received radiation therapy and chemotherapy. Methods: A cross-sectional study was conducted to evaluate the QOL among 164 women with cervical cancer undergoing treatment. A consecutive sampling technique was used to recruit the samples. The EORTC QLQ-C 30 and QLQ-CX 24 were used to measure the QOL and sexual-related symptoms. The data collected were analyzed and presented as descriptive statistics in the form of means and standard deviations.  Results: The mean of the global health status of general well-being and QOL of the women was 54.56 ± 25.47. In the QOL subgroups of functional status, the physical function (55.94) and role functions (55.34) were most frequently reported to affect QOL. Regarding sexual-related symptoms of the women, sexual worry (52.72) and menopause symptoms (48.03) were the two most prevalent symptoms which impacted QOL.Conclusions: The quality of life of women with cervical cancer in Indonesia was generally at the higher end of the scale, and yet the majority of the women reported high prevalent symptoms of cancer and adverse effects of treatments. Comprehensive, high quality and culturally sensitive care for women with cervical cancer needs to be implemented in Indonesia, which has unique social and cultural beliefs.
Decision making process for prioritizing replacement of medical equipment considering Non-technical Factors
Authors: Alqahtani Tariq Mohamed Y.
Published: December 2019

The decision to replace a large number of medical equipments is, necessarily, a multicriteria one. The author work set out to look into the current system being used at the level of the Ministry of Health in the Kingdom of Saudi Arabia to prioritize the replacement of medical equipment. That system, as it operates, is inefficient and does not utilize available resources competently. It relied mostly on technical data and specifications of medical equipment on the replacement list. The author believes that, relevant non-technical data should be used to enhance the quality of replacement prioritization decision. Current decision support systems do not take this into account, this represent a shortfall in existing knowledge. A review of relevant literature of existing Multi-Criteria Decision Making (MCDM) systems, both in the healthcare and other industries, was undertaken. This included AHP, PROMETHEE, VIKOR and Factorial Surveys (vignette). The author chose a new hybrid approach; it included the combination of AHP and vignette. This allowed weighting of non-technical data (identified as attributes throughout the thesis work) and incorporation of responses as obtained from respondents to the vignettes. The hybrid system was tested on the ground by applying it to theoretical medical equipment tender. The author found that, the use non-technical factors have merits in deciding on medical equipment priority replacement list. It is not certain if the newly developed hybrid system would be robust enough to solve the shortcomings of the existing system.
Antimicrobial Application and Assessment of Green Synthesized Silver Nanoparticles Using Aqueous Leaf Extract of Ficus Copiosa
Authors: Timi David , Gopalakrishnan Subramaniyam , Maino Macquin
Published: December 2019

Plant mediated green-synthesized silver nanoparticles (AgNPs) and the bioactivity on pathogenic micro-organisms is discussed. In the present investigation, aqueous leaf extracts of a medicinal plant, Ficus copiosa was utilized to construct AgNPs. The synthesized AgNPs was characterized by Ultraviolet-visible (UV-vis), Fourier Transform-infrared (FT-IR), X-ray Diffraction (XRD) spectrometer and Scanning Electron Microscopy (SEM) analysis. The phytosynthesized AgNPs exhibited comparable antimicrobial activity with two reference antibiotics against five indicator micro-organisms including two gram-positive (G+) bacteria, two gram-negative (G-) bacteria and a Protozoa (Pz). Study of the minimum inhibition concentration shows the two gram-negative bacteria to be more susceptible to AgNPs than the two gram-positive bacteria. The organisms included in the study are namely, B. Subtilis (G+), S. aureus (G+), E. coli (G-), S. pneumonia (G-) and T. vaginalis (Pz). Agar Disc diffusion technique was employed to assess the efficacy of the silver nanoparticles on the micro-organisms.
Towards an Enterprise Model for the Academic Researcher
Authors: Eyitayo Oduronke , Leburu-Dingalo Tebo K.
Published: December 2019

We are in an age where there are several societal and scientific challenges that are facing humanity. The academic researcher is not left out of this entire dilemma. The same researcher who is expected to be active in research within the university system is also expected to be committed to teaching and service assignments. The research task itself requires a lot of processes scattered around various work, culture, people and structure such as writing proposals, liaising with the research department, looking for materials in the library, learning appropriate applications with the Information Technology (IT) department etc. 

The study is based on a case study of the University of Botswana. It uses the Nadler-Tushman Congruence Framework to perform a gap analysis on the current system. The outcome from the study is a proposed model to help align work, culture, people and structure. The blueprint provided by the model will allow one to see the real impact of change, identifying where gaps and opportunities exist, and understand how and where things can be improved for the benefit of all stakeholders.   The paper also proposes that a more detailed model can be achieved using The Open Group Architecture Framework (TOGAF) architecture model.
My children… think it’s cool that Mum is a uni student: Women with caring responsibilities studying online.
Authors: Stone Cathy Margaret Mary , O'Shea Sarah Elizabeth
Published: December 2019

Much has been written about the growing influence and reach of online learning in higher education, including the opportunities that this can offer for improving student equity and widening participation. One area of student equity in which online learning has an influence is that of gender equity, particularly for mature-age students. This article explicitly explores how the dual identities of student and family carer are managed by women studying online. It highlights the largely invisible yet emotional and time-consuming additional load that many women are carrying and discusses the importance of this being recognised and accommodated at an institutional level. Online study has the potential to facilitate a more manageable and achievable study path for students with caring responsibilities, most of whom are women. Institutional understanding and awareness are required for this potential to be truly realised, thereby reducing educational inequity.
Ideal mathematical model of shock compression and shock expansion
Authors: Šmída Zdeněk , Kolarčík Kamil , Honus Stanislav
Published: December 2019

Shock compression and expansion are phenomena which occur mainly in screw or vane compressors. They occur when there is an imbalance in the built-in and total pressure ratio. These are phenomena that have a negative impact on the operation of these machines and, in general, cause instability in operation, an increase in energy consumption and an overall worsening of the operational economy. The aim of this article is to present newly discovered information regarding making work processes of said compressors more effective, as in many cases, shock phenomena are subconsciously underestimated. The set aim was reached by creating an ideal simulation of isothermal compression of an ideal gas with the implementation of shock phenomena, which were performed on a screw compressor with the operating pressure 7 bar and a flow performance of 3 440 l min−1. Based on the simulations performed, the hypotheses which set forth that the impact of shock phenomena ultimately leads to a sudden increase in compressor power consumption were confirmed. E.g. at 6 bar, the instantaneous power consumption increases by about 5.74% during shock compression and by about 55.95% during shock expansion. This paper deals with new insights and at the same time presents the follow-up research.
Mapping of Lineament Structures from Aeromagnetic and Landsat Data Over Ankpa Area of Lower Benue Trough, Nigeria
Authors: Ikechukwu Boniface Ijeh , Maxwell Omeje , Faith Onyeujo Oluchi , Sunday Joel Emmanuel , Oladotun Adewoyin Olusegun , Charles Olawole Olukunle
Published: December 2019

Structural analysis of aeromagnetic and Landsat data over Ankpa area, Benue state was carried out to delineate the basement topography, hydrocarbon potentials, groundwater availability and the structures that control basin formation. The Landsat imagery generated from this study was further processed using Geomatica software (version 9.0). The results obtained revealed that the drainage pattern is dendritic which could be associated to the lithological, structural and topographic differences. Also, this may indicate the presence of alluvial rocks, typically of the same geology, mainly of sedimentary rocks. This present study is in good agreement with the areas in the lineament map of high-density structures. The observation showed that the study area constitutes densely lineaments that cut across each other, which may be attributed to groundwater availability and upward migration of hydrocarbon-bearing formation. The structural trend is predominantly in the NE-SW direction and agrees with the Landsat data structural trends. Significantly, this NE-SW trend is in agreement with the trend of Benue Trough (NE –SW) and could be that they have the same structural control.
Identity and Cultural Memory in Cvit razgovora naroda i jezika iliričkoga aliti rvackoga [The Flower of Conversation of Illyrian or Croatian People and Language] (1747) by Filip Grabovac
Authors: Šutalo Goranka , Tomašić Josipa
Published: December 2019

This article deals with the textual construction of identity and the strategy of remembrance in Cvit razgovora naroda i jezika iliričkoga aliti rvackoga [The Flower of Conversation of Illyrian or Croatian people and language] (1747) by Filip Grabovac. Using the imagological analytical apparatus, the phenomenon of constituting confessional (Catholic) identity and (dominant Eastern Orthodox) alterity is discussed. The analysis focuses on textual construction or representation of confessional identities, or alterities, wherein numerous value-charged expressions are present. Given the importance of the sociohistorical context in imagological research, the paper takes into account not only the history of literature, but also the history of culture. In addition to imagological treatment, Grabovac’s text is also examined within the framework of cultural memory; discursive strategies of remembrance which maintain the constructed identity are analysed, firm reference points of memory and symbolic figures to which memory adheres are identified.
Wild Bird Workshop: A Professional Development Opportunity for Educators
Authors: Ortiz Janel L. , Conkey April A. T. , Brennan Leonard A. , Fedynich La Vonne , Green Marybeth
Published: December 2019

The lack of environmental education in many primary and secondary school systems is likely due to overloaded school curricula, lack of funds, large classroom sizes, and other contributing factors. Through the integration of hands-on activities following the training of teachers, we can improve the impact of environmental education. Our goals in this study were to (1) develop a new kit-based, hands-on, experiential wildlife curriculum for grades K–12, focused on wild birds; (2) train educators on the curriculum through a professional development workshop; and (3) evaluate participants on their affinities for, perceptions of, and attitudes toward wildlife and birds. The results suggested that the workshop was minimally effective in influencing positive responses or improvement in perceived knowledge about birds, though in general the educators came into the workshop with positive perceptions and attitudes toward wildlife. Participants emphasized in their responses the importance of outdoor lessons and the potential for integrating citizen science in the classroom. Opportunities such as this can arm teachers with tools for the classroom and create stewards of the environment and conservationists through hands-on activities in field techniques and real-world research.
Weld Geometry Investigation on Dissimilar Boron Steel Laser Welded for TWB Application
Authors: M. Salleh M. N. , Ishak M. , Aiman M. H. , Quazi M. M. , Hanafi A. M.
Published: December 2019

The pulse wave (PW) mode is an excellent replacement for continuous wave (CW) mode f laser welding in the tailor-welded blank (TWB) application for the automotive ndustry. Due to its ability to produce higher peak power in low power laser pulse mode, he weld penetration and high weld quality can be achieved similarly to the utilization of very high power laser of CW mode. This present work was carried out to investigate the ffect of pulse laser welding parameters of a dissimilar thickness of boron steel for the TWB application. Low power fibre laser with 200 W average power was chosen in this xperimental work. Response surface method (RSM) was used for the design of xperiment (DOE) by applying Box-behnken design (BBD) since there were three rocess factors involved. The process factors are peak power (PP), welding speed (WS) nd focal position (FP) and tensile strength is the response for the weld joint. The metallurgical analysis was conducted at the cross section of sample possessing highest nd lowest tensile strength. Boron steel was successfully welded by using low power fibre aser with PW mode in butt joint configuration. It was found that the highest tensile trength possessed fracture located at the base metal, which is convincing the strength of he joint. For microstructure, finer grain produced at the centre of the fusion zone (FZ) ompared to the FZ near the transition line which produced coarser and medium grain. Finer grain size in FZ contributes to the higher microhardness value and tensile strength f the joint compared to the BM region.
Performance Evaluation of CNT/MoS2 Hybrid Nanofluid in Machining for Surface Roughness
Authors: Gugulothu Srinu , Pasam Vamsi Krishna
Published: December 2019

Present work is motivated by the high thermal conductivity of MWCNT and low coefficient of friction due to MoS2 nanoparticles which can significantly improve the heat transfer and lubrication performance of hybrid nanofluids than nanofluids. Hybrid nanofluids are prepared with CNT/MoS2 nanoparticles of 1wt% in sesame oil, neem oil and mahua oil by varying hybrid ratio (i.e. 1: 1; 1:2 and 2:1) and surfactant. The hybrid nanofluid composition is evaluated based on stability analysis from sedimentation and zeta potential studies. The concentration of nanoparticles is varied by preparing CNT/MoS2 hybrid nanofluid using obtained composition for stability and selected the optimal concentration for the lowest coefficient of friction obtained in friction test. The property of thermal conductivity is also evaluated for varying concentration of hybrid nanofluid at room temperature. The contact angle for CNT/MoS2 hybrid nanofluids is evaluated with a contact angle meter to understand the lubrication effect. Experimental findings for stable hybrid nanofluid are found to be sesame oil, SDS with 15% content of nanoparticle weight and 1:2 hybrid ratio. From friction test, it is observed that 2 wt%concentration is optimal for least coefficient of friction (0.038). Minimum surface roughness (Ra) is observed with 2 wt% of hybrid nanofluid compared to dry machining and conventional cutting fluid. Optimum conditions for minimum surface roughness are evaluated in turning of AISI1040 steel with the use of 2wt% of CNT/MoS2 hybrid nanofluid in RSM. Ra value is observed to decrease with an increase in cutting speed and increased with an increase in feed and depth of cut.
Satisfacción laboral en docentes de la facultad de medicina de una universidad pública
Authors: Cruz Boullosa Víctor , Bernui Leo Ivonne
Published: December 2019

Introducción. La satisfacción laboral es importante para lograr un servicio de calidad en la organización. Objetivo. Determinar la satisfacción laboral en docentes nombrados del Departamento Académico de Ciencias Morfológicas de la Facultad de Medicina de la Universidad Nacional Mayor de San Marcos, en el año 2014. Métodos. Estudio transversal. Se aplicó el cuestionario del Índice Descriptivo del Trabajo (JDI) a 21 docentes nombrados, mediante el cual se determinó la satisfacción laboral general y cinco dimensiones específicas: trabajo actual, remuneración, oportunidades, colegas y supervisión. Resultados. Se entrevistaron 14 docentes de anatomía y 7 docentes de histología y embriología. Se encontró un 71% de varones, con una edad promedio 62,3 años, la mayoría con un tiempo de servicio entre 30 a 39 años (61%). La dimensión con mayor puntaje promedio fue la satisfaccióncon el trabajo actual (35,1 puntos); mientras la dimensión con mayor insatisfacción es la remuneración (17,8 puntos). Conclusión. A pesar de la edad y tiempo de servicio, los docentes de morfología mostraron satisfacción por el trabajo actual, independiente de la remuneración y otras variables.
Gestión de Riesgos de Desastres en Albergues en el distrito del Rímac
Authors: Espinoza Campos Eric
Published: December 2019

En agosto del 2016, el Municipio Distrital del Rímac (MDR) aprueba un Plan de Rehabilitación ante Riesgo de Desastre del distrito del Rímac.- En noviembre del 2016, se produce un incendio en el sector de Cantagallo en el distrito del Rímac resultando 300 familias afectadas/damnificadas de la comunidad Shipibo-Coniba quienes reciben la ayuda humanitaria de parte de la Municipalidad del Rímac y de la Municipalidad Metropolitana de Lima (MML).- La etapa post-desastre en este caso ha demostrado la dificultad de ayuda oportuna a un sector de ciudadanos del distrito del Rímac. Una variable es la ubicación de espacios públicos para reubicar personas, porque se destinó un espacio de albergue en el denominado campo de MARTINETI en el distrito del Cercado de Lima, es decir encontrar una solución en otro distrito. Otra variable es el bajo nivel de coordinación de los funcionarios entre entidades estatales. Un factor de ayuda fue que la población afectada /damnificada estaba concentrada en un sector, y pertenece a una misma comunidad cultural. Este factor facilita la comunicación y las coordinaciones con los funcionarios públicos. La actual situación de zonas de albergue/refugio en la MDR necesita ser corregida por personal calificado.
Miradas de la crisis contemporánea: la Gran Recesión 2008-2009
Authors: Lechuga Montenegro Jesús , Vega Miranda Faustino
Published: December 2019

En este trabajo se estudian las causas del origen de la crisis 2008-2009, desde tres posiciones teóricas. Primero, la historia económica, cuyo enfoque ayuda a contextualizar el cambio de modelo de un Estado Benefactor a un Estado Neoliberal. Los historiadores consideran que la dinámica del periodo neoliberal se refiere a un evento de largo horizonte de acuerdo a las acciones post crisis y porque no existen caminos alternativos viables contra la teoría que pugna la libertad a ultranza. Segundo, desde la teoría económica convencional la principal causa de la crisis fue la falta de mecanismos de mercado para regular la actividad económica; posición que se contrapone con un enfoque heterodoxo: el Estado debe intervenir en los procesos económicos. Finalmente, la Economía Política Marxista estudia los hechos desde una categoría relativamente reciente, la financiarización, donde el modelo de acumulación se basa en las finanzas. El sector financiero se extiende a casi todos los sectores de la vida económica y esa penetración tan abrumadora ha contribuido a la fragilidad del sistema. El objetivo es hacer una lectura de los distintos enfoques, en conjunto, para comprender de manera más adecuada el fenómeno en estudio.
Segregación de la política fiscal en el esquema de metas de inflación
Authors: León León Josefina , Hurtado Ramos Juan Carlos , Alvarado Gutiérrez César D.
Published: December 2019

La política fiscal gozó de gran popularidad durante el periodo de posguerra como principal herramienta de la estabilidad macroeconómica. Con el paso del tiempo comenzó a perder relevancia, quedando relegada sólo para estabilizar los ciclos. El artículo tiene como objetivo revisar por qué la política fiscal ha sido relegada a un segundo plano dentro de los análisis teóricos y analizar su papel implícito en el Nuevo Consenso Monetario. Si bien es cierto que la política monetaria ha sido la encargada de crear las condiciones necesarias para generar estabilidad, la política fiscal resulta crucial para alcanzar el objetivo sobre la tasa de inflación.
Velocidad de convergencia de un algoritmo de punto proximal escalarizado inexacto para minimización multiobjetivo cuasi-convexa en espacios Euclidianos
Authors: Papa Quiroz Erik , Cruzado Acu˜na Segundo
Published: December 2019

En este art´ıculo presentamos un an´alisis sobre la tasa de convergencia de un algoritmo de punto proximal escalarizado inexacto para resolver problemas irrestrictos de minimizaci´on multiobjetivo cuasi-convexas deﬁnidos en espacios Eu-clidianos, donde las funciones vectoriales son localmente Lipschitz. Bajo algunas hip´otesis naturales, probamos que la sucesi´on generada por el algoritmo converge lineal y superlinealmente hacia un punto cr´ıtico Pareto-Clarke del problema.
La actuación ética en el ejercicio profesional del contador y la aplicación de la responsabilidad social empresarial
Authors: Piedra Luna Jorge Humberto
Published: December 2019

Los sucesivos escándalos empresariales han puesto de manifiesto que la formación profesional de los contadores no es suficiente. Las tendencias actuales de la profesión contable están enmarañadas en innumerables casos de fraude y corrupción, no solo en Ecuador, sino en toda la región de Latinoamericana; esto afecta a los usuarios de la información financiera, a saber, a inversionistas, a órganos de control y al propio Estado, los cuales se encuentran interesados en la razonabilidad que presentan los estados financieros para la toma de decisiones adecuadas. La ética profesional es una necesidad que ha prevalecido en el tiempo, constituyéndose en un eje transversal para cada individuo formado con valores y principios sobre los cuales recae su actuación sobre la sociedad. Por tal motivo, el objetivo de este trabajo es determinar la actuación ética en el ejercicio profesional del contador y la aplicación de la responsabilidad social empresarial, mediante la revisión epistemológica para una nueva percepción de la profesión. La metodología aplicada para la consecución del objetivo planteado fue la revisión bibliográfica del enfoque epistemológico que ha determinado al contador como un profesional íntegro, quien antepone los intereses de la empresa antes que los propios, además, actúa de acuerdo con los objetivos que perciba la empresa y la sociedad.
Colonialidad del poder y colonialidad del género
Authors: Cariño Trujillo Carmen
Published: December 2019

En este trabajo reflexiono desde los conceptos colonialidad del poder (Quijano, 1992) y colonialidad de género (Lugones, 2008) elementos clave para sentipensar las luchas de las mujeres indígenas en el continente en defensa de la vida buena o buen vivir en sus territorios. Las mujeres junto con sus pueblos/nacionalidades indígenas se movilizan por la defensa de la tierra-territorio-vida, esto no es una novedad, pero en los últimos años se ha vuelto más visible su participación en la medida que la amenaza a los territorios atenta a elementos fundamentales en la reproducción de la vida que antes no habían sido de interés para el Capital. Frente a eso me interesa también poner atención en las formas en las cuales las mujeres de los territorios construyen y resisten desde ontologías otras en de defensa de la vida. Pensar la realidad de nuestros países desde la colonialidad del poder y la colonialidad del género implica entre otras cosas, partir de la existencia de estructuras de dominación, explotación y exterminio que han sido reproducidas a lo largo de los últimos cinco siglos en Abya Yala y que han llevado a la clasificación del mundo y la pretensión de imposición de un mundo que niega la existencia de mundos otros que habitan estos territorios y que han sido perseguidos, masacrados, invisibilizados pero que existen y re-existen (Albán, 2013: 204) en estos territorios.
Aníbal Quijano
Authors: Ríos Burga Jaime R.
Published: December 2019

El aporte teórico de Aníbal Quijano al pensamiento social, la teoría social y teoría sociología mundial, latinoamericana y caribeña es fecundo y original. El presente artículo intenta reconstruir algunas de sus ideas en su última etapa creativa que confluyen en su preocupación por construir un nuevo horizonte de sentido histórico de una civilización de vida. Una contribución creativa que en su continuidad sigue los aportes civilizatorios andino de Guaman Poma y Mariátegui planteándonos hoy el desafío de seguir enriqueciendo tntracivilizatoria y transculturalmente su construcción metateórica y teórica sociológica con nuevas preguntas y respuestas uniendo lo que la modernidad/colonialidad separó: lo verdadero, bueno y bello.
Oscar Jara Holliday. La educación popular latinoamericana. Historia y claves éticas, políticas y pedagógicas
Authors: Caycho Figueroa Maritza
Published: December 2019

Oscar Jara Holliday, sociólogo y educador peruano-costarricense, especialista en teoría y metodología educativa y cambio social; reconocido por su importante aporte teórico metodológico a la sistematización de experiencias a nivel latinoamericano y por su larga trayectoria como educador popular. El libro es parte sustantiva de su tesis doctoral presentada al Doctorado Latinoamericano de Educación de la Universidad de Costa Rica, aprobada con mención honorífica. El propósito de la investigación es analizar e interpretar los fundamentos éticos, políticos y pedagógicos de la Educación Popular a partir del análisis crítico de seis décadas de procesos socio educativos impulsados por esta corriente en Latinoamérica, para determinar sus principales aportes teóricos y prácticos.
Reflexiones en torno a la crisis y la migración laboral
Authors: Barrantes Serrano Briseida
Published: December 2019

Dos elementos en los cimientos de la sociedad han determinado cuáles son los factores que provocan una desigualdad, prejuicios, estereotipos y actitudes que han sido encaminados hacia la promoción de la discriminación que genera su aplicación en distintos terrenos de la vida cotidiana, dentro del orden establecido y que en este siglo XXI se han acentuado. Uno es el factor ideológico y el otro es el sistema económico preponderante. Ambos se juntan para que las multitudes de personas que migran de un lugar a otro se convierten en víctimas de la xenofobia, como también de las campañas de odio e intolerancia, las cuales se acentúan dependiendo del origen étnico, sexo, edad, etc. Lucrar de los miles de seres humanos que quieren llegar o permanecer en un destino que los llena de ilusiones y esperanzas, es una doble discriminación, tan perversa de opresión y explotación producto de las debilidades de políticas públicas que impulsen el desarrollo y generación de empleos decentes que disminuyan los niveles de desigualdad y pobreza a la que se enfrentan las personas trabajadoras y sus familias.