bluuebunny/crossref_metadata_2025 huggingface dataset:
PENGARUH KOMPRES HANGAT AIR SERAI TERHADAP PENURUNAN INTENSITAS NYERI ARTHRITIS RHEUMATOID PADA LANSIA DI LEMBANG EMBATAU KECAMATAN TIKALA TAHUN 2021
Authors: Saalino Valentina , Algarini Allo Olgrid , Tangga Martinus
Published: July 2022

Latar Belakang:

Artritis rhematoid  merupakan suatu penyakit autoimun yang menyerang jaringan yang melapisi sendi sehingga mengakibatkan nyeri, pembengkakan, peradangan dan kerusakan pada sendi. Manajemen nyeri dapat diatasi dengan terapi non farmakologis salah satunya adalah kompres hangat air serai. Kompres hangat berfungsi untuk melebarkan pembuluh darah dan melancarkan sirkulasi darah, sehingga dapat mengurangi kekakuan dan menurunkan sensasi rasa nyeri.

Tujuan:

Penelitian ini bertujuan untuk mengetahui pengaruh kompres hangat air serai terhadap penurunan intesitas nyeri arthritis rheumatoid pada lansia di Lembang Embatau Kecamatan Tikala tahun 2021.

Metode:

Penelitian ini akan dilaksanakan  pada bulan April sampai dengan bulan Juli 2021. Desain penelitian ini adalah quasi ekperimental pre-post design. Teknik pengambilan sampel yang digunakan adalah purposive sampling, dengan jumlah populasi sebanyak 21 dan sampel 11 orang. pengukuran skala nyeri arthritis rheumatoid menggunakan Numeric Ranting Scale.

Hasil:

Hasil penelitian  diperoleh mayoritas responden berusia 60-80 tahun sebanyak 6 orang (54.5%), sebanyak 7 orang (63.6%) berjenis kelamin laki-laki, sebelum dilakukan intervensi 6 orang (54.5%) dengan nyeri sedang skala 4-7, kemudia setelah dilakukan penelitian diperoleh mayoritas nyeri ringan sebanyak 9 orang (81.8%). Hasil ujitberpasangan diperoleh nilai (p= 0,000) < α (0,05).

Kesimpulan:

Kesimpulan penelitian ini bahwa ada pengaruh kompres hangat air serai  terhadap penurunan intensitas nyeri arthiritis rheumatoid pada lansia. Diharapkan kepada lansia dapat memanfaatkan tanaman serai untuk menurunkan nyeri arthritis rheumatoid.
Temas Selectos en Medicina Interna Vol. 5
Authors: Molina Barriga Stalin Vicente , Jarrín López Francisco Xavier , Urquizo Albán Ligia Elena , Rizzo Ortega Alvaro Adrian , Cuenca Jiménez María José
Published: July 2022

Con el desarrollo de esta obra, el objetivo principal de los autores es que la presente se convierta en una forma de enseñanza que transmita conocimientos para ser aplicados en la práctica cotidiana, ademas que sea de utilidad en momentos decisivos en los que los profesionales deban actuar con diligencia, efectividad, sensibilidad y agudeza. Debido a que es en estas circunstancias que el paciente espera lo mejor del saber de sus médicos.
Investigation of Millimeter Wave’s Cross Polarization Discrimination in Sand and Dust Storms
Authors:   Kwara State University, Malete, Musa Abdulwaheed
Published: July 2022

The performance of electromagnetic wave links in sand and dust storms has received considerable interest of researchers in recent time, especially with emphasis on the signal attenuation. However, phase rotation and cross-polarization have not been sufficiently treated. This work investigates the cross-polarization discrimination as a result of sand and dust storms at high frequency such as the millimeter wave band. The paper introduces simple mathematical models of wave propagation in sand and dust storms, and developed based on the forward scattering amplitude of sand and dust particles using the Rayleigh technique. The suitability of the Rayleigh approximation for the models are validated by setting three different conditions. The results show that that the technique is valid for determining the scattering of ellipsoidal sand and dust particles for the sizes considered and frequency range. The scattering coefficients are thus derived and models for attenuation and phase rotation are proposed in terms of visibility. The results obtained from the proposed models show close agreement with some earlier published results when compared. Differential attenuation and differential phase rotation are computed and the cross-polarization discriminations are then predicted using the parameters from the models as inputs. The attenuation during dry sand and dust storms becomes significant only when the visibility is low and severe. At such visibility, the cross-polarization discriminations also become low (i.e. significant) and the same trend and pattern is found as the frequency is increased.
Software Architecture for Smart Cities: A Systematic Literature Review of Quality Attributes
Authors:   epartment of Computer Science Ahmadu Bello University Zaria, Nigeria, Abdullahi Muhammad Shaheed
Published: July 2022

Background: A Smart City leverages on Information and Communications Technologies (ICTs), and several other infrastructures for improvement of citizens’ quality of life, efficiency in managing all aspects of city’s operations and services. Having the right architecture in developing smart city applications is paramount to achieving the minimum set of Quality Attributes (QAs). Several architectures and frameworks were proposed that are aimed at satisfying different set of QAs. However, there is a little or no effort in developing a product line architecture that satisfies all QAs that are considered common and essential to smart city applications. Aim: This work is aimed at reviewing existing smart city architectures and frameworks to identify the QAs each of these architecture and frameworks satisfy, categorizing these QAs into high level QAs as well as proposing key QAs for smart city. Method: To achieve this objective, a Systematic Literature Review (SLR) was conducted and two research questions (RQs) were defined, and the result was analyzed using descriptive statistics techniques. Results: Sixteen (16) architectures/frameworks were reviewed, and identified eight (8) high-level QAs, among which four (4) were proposed as key Quality Attributes for smart city.
Enhancing Heart Disease Prediction Using Ensemble Techniques
Authors:   Department of Computer Science, National Mathematical Centre Abuja, Nigeria, Sada Wasilah , Kiyea Celinus ,   Department of Computer Science Ahmadu Bello University Zaria, Nigeria.
Published: July 2022

Background: Cardiovascular diseases are recognized generally to be among the number one illnesscausing death across the globe. Predicting heart disease using a computer-aided technique makes it easier for medical practitioners to diagnose and thereby savinglives andreducingcosts. Feature selection has become an essential component for developing Machinelearning models. It chooses the most relevant features from the available dataset,thereby shortening the training period, making the model easier to train, improving generalization and decreasing overfitting without necessarily compromising the system’s accuracy. Aim:The purpose of this work is to design and build an optimal model forthe prediction of heart diseases,especially at an early stage by considering certain features that are most relevant forthe prediction without compromising the system’s accuracy. Method: The Cleveland UCI dataset with 303 instances wereused in trainingthe model and the findings showthat selectKBest is an effective tool in improving the prediction of heart diseases. The performance metrics Accuracy, Sensitivity, Precision were measured.Results: the study found that when hybridizing k-Nearest Neighbor Bagging, Decision TreeBagging, Gradient Boosting generated the highest accuracy of 90%, 85% and 88% respectively.
Assessing User’s Perception on Security Challenges of Selected E-Commerce Websites in Nigeria
Authors:   Sokoto State University, Sokoto and National Open University of Nigeria, Aliyu Mansur
Published: July 2022

Online shopping websites in Nigeria were assumed to be associated with security challenges such as intrusion, and abuse of users’ privacy. This study assessed users’ perception on the security challenges of selected e-commerce websites in Nigeria. The study was conducted in the Sokoto metropolis. The survey was based on ten (10) selected e-commerce websites, viz: Jumia, Konga, Olx, Jiji, Deal Dey, Taafoo, Adibba, Yudala, Kaymu, and Wakanow. A total of 200 Structured questionnaire was administered on the participants of the study based on their online shopping experience and their access to the Internet within the Sokoto metropolis. 296 responses were found usable for data analysis at the end of the survey. A descriptive analysis in form of frequency was conducted to achieve the main objective of the study. It was found that Konga, Jiji, Jumia, and OLX are the most visited e-commerce websites in Nigeria. The study discovered that privacy and security challenges are of great concern to these e-commerce websites in Nigeria. They also provide high-quality and very cheap products, provides up-to-date adverts on their websites and very easy pick-up and home delivery services. Based on the findings of this study, the following recommendations were made. Stronger security measures should be taken by e-commerce websites to earn users' trust; the e-commerce sites should engage in user awareness programs to familiarize users with security measures.
THE EFFECT OF BIOAUGMENTATION OF PETROLEUM CONTAMINATED SOIL BY MICROORGANISMS IMMOBILIZED ON MINERAL CARRIERS
Authors:   Yessenov University, KHOZHANEPESSOVA Fariza , Serikbayeva Akmaral ,   Yessenov University
Published: July 2022

Abstract. Oil pollution may arise either accidentally or operationally whenever oil is produced, transported, stored and processed or used at sea or on land. Oil spills are a major menace to the environment as they severely damage the surrounding ecosystems. To improve the survival and retention of the bioremediation agents in the contaminated sites, bacterial cells must be immobilized. This work presents the results of studies on the oil-oxidizing activity of microorganisms-oil-degraders cells free and immobilized on mineral sorbents of cells, carried out in the field at the Karazhanbas field in the Mangistau region. The highest oil destruction activity was observed in microorganisms-oil destructors immobilized on expanded clay. Keywords: Bacteria, biodegradation, crude oil, soil, immobilization.
APPLICATION OF MICROBIOLOGICAL METHODS OF INCREASING OIL RECOVERY
Authors:   Yessenov University, Eralkhanova Aikerim , Karazhanova Maral ,   Yessenov University
Published: July 2022

Abstract. The nascent article presents information about the benefits of applied microbiological methods related to promising technologies, extracting residual oil. On the basis of the accumulated of the coming time excised exposed horizons, in which was made to go to the development of a method of this and uneven refinement in various geological and technical conditions. Now, thanks to the efforts of petroleum science and practice, the oil industry of Kazakhstan owns almost all the technologies widely used in the world to increase oil recovery. Based on the analysis of technical means and technologies for the development of oil field reserves at a late stage, to develop and industrially use a technological complex to increase the efficiency of oil production based on the latest achievements of oilfield science and practice. In this regard, interest in the search for ways and means to increase secondary oil production, and in particular to microbiological methods, has now increased markedly. Microbial technologies are based on the use of physiological and biochemical features of microorganisms introduced into the reservoir: their ability to grow in a wide range of temperatures, pressure, salinity, in aerobic and anaerobic conditions and to use petroleum as a source of nutrition for life. The main areas of application of the method are defined, namely: stimulation of wells, cleaning of wells from paraffin, changing the viscosity of fluids, modification of heavy oils and bitumen in the reservoir, increasing oil recovery of reservoirs with hard-to-recover reserves. Key words: oil recovery; microorganisms; bacteria; microbiological method; late stage of development; oil-displacing agents; application criteria; bioreagents.
FACTORS OF UNIVERSITY BRAND FORMATION (BASED ON THE RESULTS OF A FOCUS GROUP STUDY CONDUCTED AT YESSENOV UNIVERSITY, AKTAU)
Authors:   Yessenov University, Mambetova Altyn , Kayupova Farida ,   Yessenov University, Abidin Abubakir ,   Yessenov University
Published: July 2022

Abstract. The process of globalization is an important and at the same time very difficult process. Depending on one's own needs, opportunities and goals of obtaining higher education, many factors have to be taken into account when making a decision in the conditions of the present time. Today, there are many universities and educational programs on the educational services market, which often only complicates the selection process, since a large amount of information (sometimes contradictory) creates a number of additional questions. In this regard, the brand of the university is becoming more important and relevant, so understanding its role and place in the process of choosing a university is an important task for sociology. Educational brands have their own specifics, different from the brands of the traditional commercial sector. Despite the obvious commercialization of education in general and the fact that recently higher education institutions are most often considered in the context of the educational services market, universities are still non–profit organizations, and higher education is a social institution. The process of globalization in the modern world has transformed the perception of higher education: higher education has turned from an intangible limited resource into a product, has become part of the international market of educational services. In order to be economically profitable in the current conditions of a market economy, universities are forced to fight for a place in the market, resorting to such methods as increasing student enrollment, absorbing weaker educational institutions, opening branches, increasing tuition fees, as well as improving branding strategies. Since November 1, 2021, a CSR sociological center has been established on the basis of Yesenov University at the Department of the Assembly of the People of Kazakhstan. The main goal of CSR YU is to carry out fundamental and applied research works that are relevant and of practical importance in the context of the implementation of innovative educational strategies of Yessenov University. This article is based on the results of a sociological study conducted to determine the state of such key indicators of the university's image as the «brand index» and the «happiness index» of Yessenov University and to identify the optimal set of tools for the effective development of the YU brand. The article analyzes the main approaches to brand research, describes the main stages of conducting and the results of a comprehensive study. Keywords: globalization, education, sociology of education, Kazakhstan, Yesenov University, university, image, educational brand, university brand, social image of the university.
SERIKBOL KONDYBAY: KAZAKH MYTHOLOGIES
Authors:   Yessenov University, Tabyldiyeva Oryngul
Published: July 2022

Abstract. The article discusses the evaluation of S. Kondybai's works, as well as the most important of them – the problem of Kazakh mythology. Serikbol Kondybai's works were evaluated as "a rare phenomenon in national spirituality, a solar hero, a global phenomenon." At the same time, in the works of Kazakh mythology, the problems of myths, ideas about the ancient, primitive Universe of ancestors, its individual worlds, about the life of the primitive peoples of this universe are considered in detail and defined. Myth is the first stage of the spiritual culture of mankind, therefore, mastering Kazakh mythology can help to take a fresh look at what is still unclear in Kazakh psychology, customs, culture and literature, history. A myth is not a made-up lie, not an artificial world, but the reality of a real people about the world and about themselves, based on historical, spiritual experience, which is considered true. The mythology of Kazakhstan is a unified system of ideas about the ancient nomadic tribal life, numbering several thousand years of participation in famous places of modern Kazakhstan. In his work "Introduction to Kazakh mythology" S. Kondybai raises the question of whether there is a mythology. The answer is in the oral heritage -in psalms and chronicles, in various fairy tales, in the form of riddles and religious rituals, as well as in the fact that the vocabulary of the Kazakh language is deeply hidden. The heritage representing the mythical existence is transmitted to the real society and is used for literary and national-forming, educational purposes. Society is continuously evolving in time and space and therefore constantly changing in mythology. The myth is a collection of unforgettable heritage of our ancestors, passed down from generation to generation. At the same time, legends are a set of beliefs that give meaning to our lives. Keywords: myth, kazakh myth, mythical consciousness, argykazak mythology, spiritual world, phenomenon, cultural studies, religious mythology, national spirituality, space.
A Study on Mechanical Properties of Austenitic Stainless Steel Welds Using ArcTig Welding
Authors: Kim Tae-Wan , Ju Woo-Hyeon , Jeon Sung-Hyun , Kim Yu-Chan
Published: July 2022

With recent increase in the demand for stainless steels, the necessity of improving stainlesssteel welding output is likewise increasing. Gas tungsten arc welding (GTAW), which can obtain clean welds, is conventionally used for stainlesssteel welding. With GTAW, however, it is difficult to meet the rising demand owing to low productivity. Alternatively, ArcTig is a welding process with increased energy density through direct electrode cooling. It is thus possible to achieve highproductivity keyhole welding, which can effectively replace GTAW. However, the mechanical properties of ArcTig welds have not been properly discussed hitherto. Accordingly, these were adequately discussed in this study. Tensile, bending, hardness, and impact tests were performed to evaluate the mechanical properties of welds, with macro and micro structures also being analyzed. The test results showed that there were no internal defects in the welds, and mechanical properties were satisfied.
BOOK SYMPOSIUM ON ERNEST SOSA’S EPISTEMIC EXPLANATIONS
Authors: Littlejohn Clayton ,   University of Arkansas Press
Published: July 2022

In this paper, I want to discuss a problem that arises when we try to understand the connections between justification, knowledge, and suspension. The problem arises because some prima facie plausible claims about knowledge and the justification for judging and suspending are difficult to reconcile with the possibility of a kind of knowledge or apt belief that a thinker cannot aptly judge to be within her reach. I shall argue that if we try (as we should) to accommodate the possibility of this kind of knowledge, we should reject a widely held view about justification. We can correct this mistaken view about the connection between justification and knowledge by connecting justification to a kind of competence, but not the one we might have expected. In the course of this discussion, I shall flag some questions about the explanatory ambitions of the telic virtue-theoretic approach
Prognostic Value of Programmed Death Ligand-1 in Discriminating Patients With Lymph Node–Negative, p53–Wild-Type, or Low-BRCA1/2-Expression Pancreatic Ductal Adenocarcinoma
Authors: Chen Xianlong , Zhang Yue , Mo Shengwei , Ma Heng , Lu Zhaohui , Yu Shuangni , Chen Jie
Published: July 2022

Context.—

Alterations in the tumor microenvironment affect the response to immunotherapy and are associated with clinical outcomes. However, the role of B7 family checkpoint molecules in pancreatic ductal adenocarcinoma (PDAC) remains unclear.

Objective.—

To investigate the expression of programmed death ligand-1 (PD-L1), B7 homolog 3 (B7-H3), and B7 homolog 4 (B7-H4) and the association of these molecules with pathologic features, DNA damage repair (DDR) molecules, immune infiltrates, and survival in PDAC.

Design.—

The expression of B7 family molecules, densities of immune cells, and DDR status were evaluated by using immunohistochemical assays in tissue microarrays.

Results.—

Positive PD-L1 expression on tumor cells (TCs) and stromal cells (SCs) was observed in 30.3% (80 of 264) and 20.5% (54 of 264) of patients, respectively, whereas B7-H3 showed positivity in 81.3% (195 of 240) and 87.9% (211 of 240) of patients, respectively. B7-H4 was detected exclusively in tumor cells, with a positivity rate of 76.0% (193 of 254). PD-L1 on TCs was an independent predictor of worse disease-free survival, whereas B7-H3 on TCs was an independent factor of improved survival. The prognostic significance of PD-L1 was more discriminative in lymph node–negative, p53–wild-type, and low-BRCA1/2-expression tumors. B7-H3 on SCs was negatively correlated with CD45RO T cells, whereas PD-L1 on SCs was related to high densities of CD3, CD4, CD8, CD45RO, and Foxp3 T cells and B7-H4 was more common in tumors with a low CD8 status.

Conclusions.—

We identified B7 family checkpoint molecules as potentially prognostic indicators, combined with different DDR molecular statuses and complex immune infiltrates, in PDAC.
LibraryThing and Literary Works Revisited: Are Social and Library Cataloging Just as Complementary as they were a Decade Ago?
Authors: Hider Philip , Steele Gemma
Published: July 2022

Providing access to literary works remains a challenge for catalogers and metadata librarians, notwithstanding modern advances such as the introduction of the Guidelines on Subject Access to Individual Works of Fiction, Drama etc. and the Library of Congress Genre/Form Terms. This study explores how harnessing the social cataloging of fiction and other belles-lettres might help meet this challenge. Samples of records from the catalogs of a university and a public library were compared with their equivalents in the LibraryThing (LT) platform, using a similar study reported in this journal ten years prior as a baseline. Most of the library titles were found in LT, and most were linked to tags that still offered additional access points of considerable value beyond the subject and genre headings included in the library records. However, the number of relevant and useful tags attached to each title varied considerably, as indeed did the quantity and quality of the headings. The authors analyze how the tags complemented the headings and identify genre, setting, theme, characters, and authorial attributes as key elements of description for social catalogers of literary works.
A experiência de se elaborar uma tecnologia cuidativo-educacional à luz da Teoria das Transições
Authors: Bittencourt Marina Nolli , Marcon Samira Reschetti , Oliveira Angellica Fernandes de , Landim Valquiria Mira , Santos Junior Darci Francisco dos , Freitas Bruna Hinnah Borges Martins de
Published: July 2022

Objetivo: relatar a experiência da primeira fase da elaboração de uma tecnologia cuidativo-educacional (TCE)para a promoção da saúde mental infantil. Método: relato de experiência,sobre a primeira fase da elaboração de um manual à luz da Teoria das Transições de Meleis e do Modelo de Inteligência Emocional de Goleman. Resultados: o manual foi elaborado considerando a infância como um período de natureza desenvolvimental, tendo comofacilitadores a escola e as características emocionais positivas da criança, podendo ser inibida por fatores relacionados ao contexto social negativo. Em relação ao padrão de resposta, obteve-se um padrão de resposta emocional positivo da criança, por meio da promoção da saúde mental, a partir do fortalecimento das competências emocionais das crianças. Conclusão: a escolha da Teoria promove a comunicação de forma efetiva e a utilização do Modelo de Inteligência Emocional de Goleman possibilita que a TCE obtenha compreensão, multiplicação e execução.
Potencialidades e fragilidades institucionais no cuidado ao idoso com hipertensão
Authors: Braga Johrdy Amilton da Costa , Bordoni Mérida Zilanda Barbosa , Brito Elorides de , Mendes Maíra dos Santos , Barros Iarema Fabieli Oliveira de , Leon Elisa Brosina de
Published: July 2022

Objetivo: avaliar a capacidade institucional de cuidado ao paciente hipertenso nos serviços de saúde destinados aos idosos, a partir da percepção das equipes de saúde. Método: estudo transversal, com 53 profissionais de saúde das instituições ambulatoriais especializadas no cuidado ao idoso na cidade de Manaus, Amazonas, Brasil. Aplicou-se a Avaliação da Capacidade Institucional para Atenção às Condições Crônicas (ACIC). Os dados são apresentados em valores de média. Resultados: as potencialidades foram nas dimensões: autocuidado apoiado (6,1 ± 2,7), organização da atenção à saúde (5,5 ± 2,1) e desenho do sistema de prestação de serviços (5,1 ± 2,6). As fragilidades foram: sistema de informação clínica (3,9 ± 2,7), recursos da comunidade (4,0 ± 2,9), integração dos componentes do modelo de atenção (4,1 ± 2,7) e suporte às decisões (4,4 ± 2,9). Conclusão: de acordo com o ACIC, as instituições apresentaram capacidade básica na prestação decuidado ao paciente hipertenso.
Crianças com necessidades de saúde especiais em um serviço de pronto atendimento pediátrico: estudo transversal
Authors: Bastos Mayara Pacheco da Conceição , Santos Andressa Silva Torres dos , Ledo Beatriz Cabral , Moraes Juliana Rezende Montenegro Medeiros de , Cabral Ivone Evangelista , Góes Fernanda Garcia Bezerra
Published: July 2022

Objetivos: rastrear crianças com necessidades de saúde especiais em um serviço de pronto atendimento pediátrico e analisar suas demandas de cuidado. Método: estudo transversal, desenvolvido de março a junho de 2019, em serviço hospitalar de emergência infantil, no município de Rio das Ostras, Rio de Janeiro, Brasil. Aplicaram-se a versão brasileira do Children with Special Health Care Needs Screener (CSHCN Screener®) e o instrumento caracterizador de demandas com familiares cuidadores de crianças. Utilizou-se a estatística descritiva. Resultados: crianças com necessidades de saúde especiais corresponderam a 5,1%, dentre 235 famílias rastreadas. Os principais domínios de necessidades de saúde foram maior utilização de serviços e dependência de medicamentos. Dentre as demandas de cuidados, destacaram-se os cuidados habituais modificados. Conclusão: as seis demandas de cuidados foram identificadas entre as crianças rastreadas. Recomenda-se a adoção do CSHCN Screener® para ampliar a visibilidade e indicar estratégias assistenciais a esse grupo populacional.
PIV Measurements of a Tip Leakage Vortex
Authors: Judge Carolyn Q. , Oweis Ghanem F. , Ceccio Steven L. , Jessup Stuart D. , Chesnakas Christopher J. , Fry David J.
Published: July 2022

The tip-leakage vortex occurring on a ducted rotor was examined using both three component Laser Doppler Velocimetry (LDV) and planar Particle Imaging Velocimetry (PIV). The vortex strength and core size were examined for different vortex cross sections downstream of the blade trailing edge. The variability of these quantities are observed with PIV and the average quantities are compared between LDV and PIV. Developed cavitation is also examined for the leakage vortex. The implication of vortex variability on cavitation inception is discussed.
3-D LDV Mapping of the Flow About a Waterjet-Powered Hull in a Tow Tank
Authors: Chesnakas Christopher J.
Published: July 2022

A three-velocity-component Laser Doppler Velocimetry (LDV) system has been developed at the David Taylor Model Basin (DTMB) for use in obtaining the flow field around tow-tank surface ship models. The system configuration and operation is described and a detailed analysis of the uncertainty associated with the system measurements is presented. Results of measurements on a waterjet-powered destroyer hull are presented. On this hull, velocity fields are shown ahead of the inlet, inside the inlet, and at the exit of the jet. Pitot tube measurements are combined with the velocity measurements at the propulsor exit to obtain the static pressure field. It is shown how these measurements are used to obtain mass-flow and flow distortion coefficients so that the pro­pulsive performance may be evaluated.
Effect of Model Propeller Trailing Edge Details on Powering Performance
Authors: Michael Thad J. , Jessup Stuart D.
Published: July 2022

Until recently, model propellers tested at the US Navy's David Taylor Model Basin (DTMB) incorporated relatively sharp trailing edges without fall scale features such as anti-singing trailing edges. These propellers have shown good agreement between design calculations and model measurements. With the advent of NURBS surface representation of model propeller geometry, new propeller models have been manufactured with fall scale trailing edge details. Problems have arisen in achieving predicted open water performance. Discrepancies have been attributed to trailing edge flows over beveled edges, and variations in trailing edge shape due to manufacturing problems. The analysis included detailed trailing edge measurements, an open water test. and panel method computations.
The Effect of Propeller Loading on Thrust Deduction
Authors: Hadler J. B.
Published: July 2022

The propulsion factor called thrust-deduction fraction, t, trets the interaction of the propeller with the hull when the ship is underway and is an important element in determining the propulsive performance of a vessel. The reduced pressure field created by the propeller at the stern of a ship effectively increases the ship's resistance. The naval architect treats this increase in resistance as a deduction from the propeller thrust.
State of the Art - Cavitation Test Facilities and Experimental Methods
Authors: Etter Robert J.
Published: July 2022

Cavitation tunnels have played a critical role in the development of ships and other naval vehicles and the associated research applicable to the engineering of these vehicles. Particularly important has been the use of cavitation tunnels in the development of propulsion systems. The paper reviews some aspects of the historical development of the modern cavitation tunnel. It includes aspects of tunnel design such as size, speed, pressure range, acoustics, and materials. Model construction, installation, and instrumentation are discussed. Initially, the most innovative development occurred in 1895 with the invention of the cavitation tunnel by Sir Charles Parsons. More than 100 years later, the cavitation tunnel is still the key test facility used for cavitation research, test and evaluation. Technologies currently used for performance evaluation have changed greatly over those used only a decade or two ago. This has been in part due to incredible innovations in the area of instrumentation and digital electronics as well as the need to characterize modern propulsors in ways not previously required. The evolution of cavitation tunnel capabilities and the use of the tunnel in a large marine research, development, and design organization is largely reviewed by considering the various cavitation tunnels which have been constructed and utilized at the David Taylor Model Basin over several decades.
The Future of Webb's Towing Tank
Authors: Van Hooff R. W. , Gallagher N. J. , Compton R. H.
Published: July 2022

Webb Institute is.one of the few remaining institutions in the United States, devoted to educating students in Naval Architecture and Marine Engineering at the undergraduate level. Within the context of its educational program, a towing tank was constructed to be able to give hands-on experience to its students in the area of resistance and, later, seakeeping experiments. The facility was named the Robinson Model Basin (RMB) in honor of Admiral Robinson, Webb's president from 1945 to 1950. The primary purpose of the towing tank was always to serve the educational program, although some research and development work was, of course, performed by the Webb faculty. It suffices to mention the work on wave resistance by Ward, the trawler series by Nevitt, the springing research by Hoffman and Van Hooff, among others. What we wish to address now is the towing tank as it relates to: modem trends in the maritime business and in naval architecture education. The primary purpose of this contribution is to solicit the comments of attendees of the 26􀂀 ATTC on our conclusions. We welcome your suggestions.
Unsteady PIV for regular head waves
Authors: Longo J. , Shao J. , lrvine M. , Gui L. , Stern F.
Published: July 2022

Phase-averaged results from a towing tank experiment of regular head waves are documented. Uniform flow, free surface elevation, and headwave flowfields are measured with a towed particle image velocimetry system in the Iowa Institute of Hydraulic Research towing tank of a two-dimensional, deep-water, long­wavelength (A.=4.572 m), low wave steepness (Ak=0.025) progressive head wave. The towing speed is 1.53 m/s which corresponds to Fr=0.28 for a 3.048 m surface combatant which will be the focus of a future study for measuring the unsteady boundary layer and wake with the present measurement system. Uniform-flow measurements are conducted first to establish the resolution of the mean variables, levels of turbulence in three normal stresses and two Shear stress components, and uncertainties which are roughly 0.65% for the axial flow (U) and 0.5% for the transverse (V) and vertical components (W). Then, tests are conducted in headwaves at five elevations to map the orbital wave patterns. The data is phase-averaged and Fourier analyzed to determine the harmonic content in the measured headwave patterns. Results are compared with deep-water progressive wave theory to evaluate the qualities of the harmonic amplitudes and phases of the data. The 0th harmonic results for U, V, W=l, 0, 0 to within the resolution of the measurement system. The 1st harmonic of U,W are generally within 1- 2% of the theoretical harmonic amplitudes and demonstrate same exponential decay with increasing distance from the free surface as theory. Differences between experiment and theory of the 1st harmonic phase of U, W are observed in the results that are not fully understood but described with possible explanations. The data will be archived at the IIHR towing tank website at http://www.iihr.uiowa.edu/-towtank.
Numerical Studies of Directional Wavemaker Performance
Authors: O'Dea John F. , Newman J. Nicholas
Published: July 2022

The performance of a multi-unit wavemaker for generating directionally-spread waves has been studied using the three-dimensional, radiation-diffraction code WAMIT. Design choices of wavemaker geometry (including type of motion, total number of units and size of individual units) affects various parameters of performance, including quality of radiated waves and inertial load that actuators must overcome. The sensitivity of generated waves to these variables is demonstrated.
High-Speed Planing Craft Model Tow Tank Testing
Authors: Fu Thomas C. , Russell Lauren , Rice James R. , Fullerton Anne M. , Ratcliffe Toby
Published: July 2022

Tow tank testing of high speed planing craft differs from traditional displacement hull testing in several aspects, even when the objectives are similar. While the sinkage and trim of a displacement ship does change with speed, the changes are relatively small and do not result in large changes to their waterline length and wetted surface area. Planing craft, due to dynamic lift, undergo large changes in waterline length and wetted surface area from their at rest values. Additionally, validation of computational fluid dynamics codes for conventional monohull and unconventional multihull planning craft has made necessary the measurement of additional data beyond just resistance and the development of specialized capabilities for planing craft testing. This paper will describe several of the measurement techniques and procedures now utilized at the Naval Surface Warfare Center Carderock Division (NSWCCD) when tow tank testing planing craft.
Rocha e Mar
Authors: Vicentini Daniela
Published: July 2022

Nos primeiros meses de pandemia, em 2020, fiz aquarelas pela observação repetida do encontro da água e da rocha no mar. Esse motivo foi surgindo como um diálogo que trouxe o dar-me conta, de sobressalto, do acaso que me fez conectar com esse encontro de forças. Trechos da escrita de um diário que acompanhou esses meses se tornaram desenhos que procuram trazer a vista longínqua do mar e o brilho nas águas, em nanquim prata sobre papel sulfurize. Essa série se constitui de encontros que ocorrem também com o vídeo Leão Marinho e com um pequeno objeto deixado pelo mar na areia, registrado em fotografia.
Sentidos e significados para a escolha da profissão professora de música: por uma compreensão narrativa
Authors: Mateiro Teresa , Audrá Giulliana
Published: July 2022

O objetivo deste trabalho é tornar perceptíveis os sentidos e significados da narrativa de uma estudante de pós-graduação, a fim de compreender como ocorreu sua escolha pela profissão professora de música. Os ensaios autobiográficos, orais e escritos, entendidos como prática de formação e método de investigação foram produzidos durante quinze semanas em uma disciplina do curso de Mestrado em Educação Musical, oferecida durante o ano de 2019. Dez temáticas foram abordadas: escolha da profissão; antecedentes familiares, musicais e educacionais; ser professor e músico; atuação profissional com música; aprendizagem musical; música no contexto escolar; experiências formativas marcantes; experiências com composição e improvisação; experiências com educação musical não formal; e como as experiências musicais se relacionam aos estudos teóricos e às visões epistemológicas de autores das áreas de educação e, especialmente, de educação musical. Para apresentar a história da estudante, uma série de cortes foi realizada para permitir olhar sua trajetória para além do percurso biográfico. A pergunta que norteou esta pesquisa foi: qual o caminho trilhado por ela para decidir pela profissão professora de música? Ao interpretar as narrativas, foram destacadas as relações entre as dimensões pessoais e profissionais que conduziram suas escolhas de formação, assim como os processos de mudança que se refletem em sua história de vida. Os eixos selecionados para discussão foram: os primeiros anos escolares, as experiências musicais e de formação e a decisão pela educação musical. É uma história singular que pretende, acima de tudo, ser educativa.
Leberjeva hereditarna optična nevropatija – pregled bolezni z analizo prisotnosti v Sloveniji
Authors: Šega Rok , Burgar Jan , Fakin Ana , Petrović Pajić Sanja , Volk Marija , Hawlina Marko , Glavač Damjan , Jarc-Vidmar Martina
Published: July 2022

Leberjeva hereditarna optična nevropatija (LHON) je redka dedna mitohondrijska bolezen, ki povzroča slepoto najpogosteje pri mladih odraslih. Navadno se izrazi kot subakutna, neboleča izguba vida na eno oko, ki ji sledi poslabšanje vida drugega očesa v nekaj tednih do mesecih. Bolezen večinoma pušča trajne posledice, le pri nekaterih bolnikih lahko v redkih primerih pride do delnega spontanega izboljšanja vida. Razmerje med moškimi in ženskimi bolniki se ocenjuje na 3 : 1. V zadnjih letih je z razvojem zdravilne učinkovine idebenone možno podporno farmakološko zdravljenje, ki lahko prispeva k delnemu izboljšanju vidne funkcije. Bolezen zaradi svoje redkosti velikokrat ostane ne- ali napačno diagnosticirana. V članku predstavljamo štiri klinične primere bolnikov, pri katerih se je po obsežnem in dolgotrajnem diagnosticiranju izkazalo, da imajo LHON. Od leta 1996 se v Sloveniji vodi baza bolnikov z redkimi dednimi očesnimi boleznimi. Na tej podlagi je ocenjena prevalenca LHON 1/72.000. Ob sumu na bolezen so ključni družinska anamneza slabovidnosti po materini strani, genetsko testiranje in napotitev na obravnavo ter zdravljenje v terciarno ustanovo.
Fechas para recordar: la guerra de Malvinas en las nuevas efemérides digitales del 2 de abril (2020-2021)
Authors: Bottazzi Florencia
Published: July 2022

En este trabajo indagaremos las efemérides del 2 de abril –Día del Veterano y de los Caídos en la guerra de Malvinas– producidas durante el período 2020-2021 a partir de la noción de género editorial y desde un enfoque enunciativo.
Las mediaciones editoriales, lejos de ser accesorias, vehiculizan determinados modos de leer y construir sentido, “moldeando” nuestra memoria lectora y formas de acceder al texto. En esa dirección, nos interesa investigar cuál es el relato de la guerra de Malvinas que allí se construye y de qué forma se manifiesta la subjetividad pedagógica en estos materiales.
La guerra de Malvinas en la historieta argentina. Aportes para un estado de la cuestión (I)
Authors: Bórquez Néstor
Published: July 2022

El artículo analiza la relación de la historieta argentina con la guerra de Malvinas. En esta primera parte propondremos un recorrido por las principales obras colectivas –publicadas en torno al trabajo individual de los historietistas–. Partiendo de la evolución cronológica de acercamiento al conflicto, desde la finalización del mismo y hasta el siglo XXI, presentaremos una clasificación basada en los aspectos generacionales y regionales, como así también de aquellas miradas con un énfasis más nacionalista o épico.
Cristina Ruiz Urbón y Javier Blasco (eds.) Nueva poesía erótica de los Siglos de Oro
Authors: Ferreira Barrocal Jorge
Published: July 2022

Reseña de la antología Nueva poesía erótica de los Siglos de Oro, al cuidado de los profesores Ruiz Urbón y Blasco Pascual.
Ángela Pradelli: Dos Soldados
Authors: Codaro Laura
Published: July 2022

Reseña sobre Dos Soldados de Ángela Pradelli (Buenos Aires: Emecé, 2022, 230 pp.)
“Alguien te pone en la palma de la mano su dolor”. Entrevista a la escritora Ángela Pradelli
Authors: Codaro Laura
Published: July 2022

Entrevista a la escritora Ángela Pradelli.
Memorias recientes de un conflicto de 40 años: Las últimas representaciones culturales de la guerra de Malvinas
Authors: Schlickers Sabine , Torres Victoria
Published: July 2022

Introducción al monográfico Memorias recientes de un conflicto de 40 años: Las últimas representaciones culturales de la guerra de Malvinas.
Virtual reconstruction of the Trinity Cathedral in Stavropol-on-Volga in the first half of the twentieth century: sources, methods and research technologies
Authors: Lysenko Kristina Dmitrievna
Published: July 2022

This work is devoted to the current direction of historical urbanism – the creation of virtual reconstruction of objects of historical urban development. Specifically, the task of creating a 3D reconstruction of the Trinity Cathedral in Stavropol-on-Volga (currently Togliatti, Samara region) is being solved. This cathedral was rebuilt four times and moved twice, and in the end it was blown up and flooded during the construction of Kuibyshev (Zhigulevskaya) Hydroelectric power station in 1955. The main purpose of the study is the reconstruction of the final version of the appearance of the stone temple in the middle of the twentieth century. The work contains a study of the history of the cathedral, the urban area where it was located, as well as a description of the process of creating a virtual reconstruction and related problems. Due to the complete loss of the building, as well as the lack of development of its virtual reconstruction at the last stage of its existence, the creation of a 3D model of the Trinity Cathedral is an urgent project that will contribute to the preservation of the common cultural heritage of the city of Togliatti, and will also probably help attract public attention and investors who can help in the restoration and preservation of this monument historical and cultural heritage. The study was conducted with the support of the Togliatti Museum of Local Lore, which provided numerous materials for research with the desire to place the virtual reconstruction obtained during this work in its exposition.
Experience of using 3D reconstructions of cultural heritage objects in museum practice (on the example of the Trinity Cathedral in Stavropol-on-Volga)
Authors: Lysenko Kristina Dmitrievna
Published: July 2022

This article is a logical continuation of the author's article "Virtual reconstruction of the Trinity Cathedral in Stavropol-on-Volga in the first half of the twentieth century: sources, methods and research technologies", which contains a more detailed account of the history of the city of Stavropol-on-Volga and the Trinity Cathedral, as well as a description of the process of developing a virtual reconstruction. The subject of this study is the analysis of foreign and domestic experience in the use of virtual reconstructions in museum practice, as well as a description of the author's experience in preparing and placing materials for the virtual reconstruction of the monument of historical and cultural heritage in the museum exposition of the Togliatti Museum of Local Lore.   The Trinity Cathedral, built in 1738 in Stavropol, was one of the very first buildings of the city. It was the city-forming and uniting Kalmyks, accustomed to nomadism, in one place on the basis of religion. Due to the complete loss of the building, as well as the lack of development of its virtual reconstruction at the last stage of its existence, the creation of a 3D model of the Trinity Cathedral is an urgent project that will contribute to the preservation of the common cultural heritage of the city of Togliatti, and will also probably help attract public attention and investors who can help in the restoration and preservation of this monument historical and cultural heritage.
Identifying Factors Contributing to the Level of Industry 4.0 Technologies Adoption among SMEs in Different Countries
Authors: Zaidi Nurul Izzati Naqibah , Nazmudeen Mohamed Saleem , Mohiddin Fadzliwati
Published: July 2022

Industry Revolution (IR) 4.0 technologies are considered crucial in industries to gain competitive advantage and optimize their performance. This study aims to compare different levels of adoption of IR 4.0 technologies from various industries in developed and developing countries. The comparison of countries on IR 4.0 technologies adoption from basic to advanced levels are shown in this research paper using our unique simplistic approach. Also, we identify what are the contributing factors that affect the level of adoption of these technologies. It has been concluded that developed countries are slightly higher in adopting technologies compared to developing countries. Research conducted is qualitative and descriptive, using secondary data from eight different countries from developing and developed categories.