bluuebunny/crossref_metadata_2025 huggingface dataset:
Nefrectomia parcial robótica
Authors: Hampl Daniel Sá Rego , Neto Elísio Alves Balbino , Milfont José Cocisfran A. , Bruno Leandro Marchetti
Published: July 2022

A nefrectomia parcial é a principal ferramenta para o tratamento de massas renais suspeitas de carcinoma de células renais (CCR) em adultos, assim como tumores renais sólidos e massas renais císticas complexas.
Ureteroscopia flexível
Authors: Danilovich Alexandre , Perpétuo Daniel , Franco Marcelo
Published: July 2022

A ureteroscopia flexível tem papel fundamental na condução dos tumores uroteliais do trato urinário superior, pois contribui para o diagnóstico, o tratamento e o seguimento. A ureteroscopia flexível evita erro de 2% a 15% no diagnóstico da tomografia, assim aumentando a segurança, e seleciona melhor o tratamento definitivo.
Terapia focal no câncer de próstata
Authors: Abreu André , Fortes Helena , Almeida Ricardo de
Published: July 2022

Neste capítulo, abordaremos o papel da imagem no contexto da terapia focal, desde a seleção dos pacientes elegíveis a ela até os aspectos de imagem mais comumente encontrados no pós-tratamento.
The Role of Intellectual Property in Business Law Rolul proprietăţii intelectuale în dreptul afacerilor
Authors: Bliznets Ivan
Published: July 2022

The article analyzes the role of intellectual property in the modern economy, its impact on innovation processes. The features of management and commercialization of intellectual property are analyzed.
Patented Devices and Methods for Utilization in Tissue Engineering
Authors: Jian Mariana , Cobzac Vitalie , Viorel Nacu
Published: July 2022

This paper describes the patented methods and devices which were obtained during researches in projects conducted in the Laboratory of Tissue Engineering and Cell Cultures of SUMPh “N. Testemitanu”. Patented devices and methods are part of tissue engineering domain and are of economic, technical and medical importance, because they allow an effi cient, safe and qualitative process for grafts obtaining for transplantation.
High-Efficiency Seed Dehydration System
Authors: Popescu Victor , Balan Mihail , Tofan Grigore , Balan Tatiana , Volconovici Onorin , Curdov Igor
Published: July 2022

This article is devoted to estimating the effectiveness of dehydration of suspended seeds. To address this issue, a dehydration system has been developed, based on which research has been conducted. Convection and microwaves were used as the treatment agent. Thus, the results obtained on the example of drying the grape seeds, showed that the dehydration in a suspended layer ensures the increase of the process speed and reduces the drying time. Moreover, the developed system allows of reducing energy consumption and increasing the quality of grape seeds, for later use in the food industry, medicine, cosmetology, pharmaceutics etc.
The Role of Parents in Satisfying the Needs of the Teenagers Connected to the Online Environment
Authors: Baiasu Alina Gabriela
Published: July 2022

The psychic transformations the teenager is subjected to are generated by the needs and requirements he experiences, not only by the puberty needs, which take other forms now, but also by the needs emerging at this level of growth. In this article we will talk about the emotional needs of the teenagers, related to the online environment and we will consider both constructive behavior and what parents should avoid in their relationship to their children. Teenagers’ connection to their own emotional needs (safety, belonging, empathy and honesty, autonomy, trust, spontaneity, etc.) as well as the involvement of the parents in gratifying them reflects in the degree of vitality and well-being of the child. Apart from the undeniable benefits, the development of the technology and the accessibility of the online environment also draw undesirable consequences which can lead to major damage of psychic, social and school functioning. It is essential for the parents to be present in their teenagers’ life, be available and informed about the age characteristics, internet traps, ways of preventing the risks in the online, influencing and maintaining their children’s excitement and joy, as well as spontaneity and innocence.
KEBIJAKAN KETAHANAN PANGAN DAN LITERASI PANGAN MASYARAKAT (Studi Penelitian Tentang Literasi Pangan Mendukung Ketahanan Pangan di Kota Semarang)
Authors: Widyastomo Rahmad Purwanto
Published: July 2022

Abstrak

Tujuan penelitian tentang ketahanan pangan dan pentingnya literasi pangan masyarakat adalah  mendskripsikan ketahanan pangan di Kotra Semarang berdasarkan dokumen perencanaan daerah dan  kebijakan ketahanan pangan dan gizi  telah dilaksanakan  berdasarkan kewenangan pemerintah daerah. Konsumsi bahan pangan pokok penduduk sangat tergantung pada beras (produksi hanya memenuhi 15% dari kebutuhan penduduk) dan memerlukan dukungan dari kabupaten sekitar. Demikian pula bahan pangan sayur mayur, buah-buahan, daging dan ikan lebih besar dari kabupaten sekitar. Pemahaman masyarakat tentang pangan beragam semakin baik dan memerlukan dukungan perguruan tinggi, kalangan dunia usaha dan media massa mengenalkan pangan beragam, piring panganku dan perilaku hidup bersih dan sehat melalui Gerakan Masyarakat Sehat (Germas) dan kelembagaan Kota Sehat semakin penting peranannya dalam masyarakat.

Kata kunci : kebijakan ketahanan pangan, pangan beragam dan gizi 

Abstract

The purpose of research on food security and the importance of community food literacy is to describe food security in Kotra Semarang based on regional planning documents and policies on food security and nutrition that have been implemented under the authority of the local government. Consumption of staple foods of the population is highly dependent on rice (production only meets 15% of the population's needs) and requires support from the surrounding district. Likewise, food ingredients for vegetables, fruits, meat and fish are bigger than the surrounding districts. The public's understanding of diverse food is getting better and requires the support of universities, the business community and the mass media to introduce diverse food, my food plate and clean and healthy living behavior through the Healthy Community Movement (Germas) and the Healthy City institution whose role is increasingly important in society.

 

Keywords: food security policy, diverse food and nutrition
Temas Selectos en Medicina Interna Vol. 3
Authors: Ríos Quinte Raúl Jonathan , Salazar Santana Sandy Carola , Torres Castillo Kelvin Alexander , Navarrete Bolaños Karla Abigail , Calle Mourin Ricardo Enrique , Montenegro Salas Daniela Stephanie , López García Marlon Andrés , Gavilanes Acosta Daisy Maribel , Barahona Ochoa Katty Magdalena , Ponce Alencastro Jhon Alexander , González Romero Daniel Andrés , Encalada Granda Santiago Leonel , Vela Yar Jorge Steeven , Coello Merino Jenny Antonella , Curipoma Aguinsaca Verónica Alejandra , Bravo Otoya Andrea Estefania , Abarca Aldean Silvana Patricia , Hidalgo Robalino Liliana del Carmen , Ramírez Ruiz Carlos Jaír
Published: July 2022

La presente edición ofrece una serie de temas sobre Medicina Interna en la práctica médica. Se hace una presentación clásica de la patología o procedimiento tomando en cuenta el accionar del médico general o el interno residente en dicha especialidad. Cuando ha sido posible se incluye un estudio de caso y bibliografía más reciente con epidemiología del Ecuador o Latinoamérica.
IoT para o Gerenciamento Remoto da Irrigação: Análise da Confiabilidade do Sistema
Authors: Pinheiro André Luis Albuquerque , Figueiredo Alan Emanuel Santos , Feitosa Francisco Cleber da Conceição , Sousa Francisco Rondynelle Rodrigues , Santos Francisco Gauberto Barros dos , Esmeraldo Guilherme Álvaro Rodrigues Maia , Feitosa Robson Gonçalves Fechine
Published: July 2022

O presente trabalho descreve um sistema de gerenciamento remoto da irrigação localizada, com ênfase na confiabilidade do sistema, que recebe como entrada, dados de sensores, e informações de acionamento oriundas do usuário; e, como saída, são gerados gráficos, além da automação do acionamento da irrigação. A análise da confiabilidade do sistema mostrou que: um dos sensores de umidade do solo apresentou problemas de corrosão após 10 dias de uso; foi necessário utilizar um multiplexador de portas analógicas, devido o número limitado de portas do ESP8266; e, a placa de circuito impresso apresentou melhores resultados com relação a problemas de falhas de conexão entre componentes, resistência e durabilidade.
Estudo de métricas de ranking na rede de citação de artigos científicos Cora
Authors: Bianch Samuel O. S. , Silva Juliana S. , Silva João G. R.
Published: July 2022

A publicação de artigos científicos é uma ação essencial no meio acadêmico. Contudo, definir qual artigo ou publicação científica tem a maior relevância entre os autores é um desafio para os pesquisadores. Assim, o objetivo deste estudo é analisar a aplicação de algumas métricas de ranking em uma base de dados de citações, denominada Cora, na perspectiva de verificar, qual a métrica apresenta rankings mais próximos aos rankings gerados por outras métricas. A métrica que mais se correlaciona às demais tende a ser uma métrica que, de um modo amplo, se aproxima da classificação de outras considerações matemáticas utilizadas por outras métricas, o que a torna uma boa indicação quando necessário a classificação de postos para bases de dados de artigos científicos e suas citações. Para as comparações entre as métricas foram utilizados coeficientes de correlação. Resultados quantitativos indicaram que as métricas Betweenness e Grau são as que mais se correlacionam às demais, o que as tornam boas indicações para o problema.
Epidemiologic and Antifungal Susceptibility Profile of Candiduria Among Patients Hospitalized in The Nephrology and Intensive Care Unit Wards, Tehran, Iran
Authors: Ahmadi Faezeh , Daie Ghazvini Roshanak , Hashemi Seyed Jamal , Ramezanalipour Zahra , Chabavizadeh Javaher , Rafat Zahra , Roostaei Davoud
Published: July 2022

Background: One of the most prevalent infections in hospitalized patients is candiduria. As the prevalence of this infection is increasing, new epidemiologic and therapeutic data can be used as a guide for the management of patients. Objectives: This research aimed to determine the epidemiological and antifungal susceptibility profile of candiduria. Methods: A total of 104 patients admitted to the nephrology and ICU wards of Bu Ali and Labbafinezhad hospitals in Tehran, Iran, were studied in this cross-sectional investigation. Urine samples were examined using direct smear, culture, and PCR-sequencing techniques. The culture plates were subjected to colony count. The clinical and laboratory standards institute (CLSI) document M27 4th ed was used to assess susceptibility to amphotericin B, itraconazole, caspofungin, and fluconazole. Results: Out of 104 patients, 26 (25%) were diagnosed with candiduria. Most patients were between the ages of 64 - 79 years (n = 9, 34.61%) and female (n = 17, 23.94%). Stroke and urinary catheterization were the most common underlying diseases. Candida glabrata (n = 10, 38.64%) was the most common cause of candiduria. Caspofungin and amphotericin B were the most effective antifungal medicines. Conclusions: Candida glabrata has been identified as the most common cause of candiduria. Due to the increasing antifungal resistance in this species, proper treatment of patients is a crucial concern. Caspofungin exhibited potent antifungal activity against all tested isolates. Still, regardless of its favorable in vitro activity, due to its poor glomerular filtration or tubular secretion in vivo, it has sub-therapeutic antifungal concentrations in the urine.
Effect of Common Chicory Essence and Phototherapy on Serum Bilirubin Levels in Preterm Infants Admitted to Neonatal Intensive Care Unit: An In Vitro Study
Authors: Faal Gholamreza , Bijari Bita , Zardast Mahmood , Shariati Maryam
Published: July 2022

: Jaundice is a common neonatal disorder that occurs in most term and preterm infants. Chicory or dandelion flower has long been used in the treatment of jaundice. This study aimed to investigate the effect of common chicory essence and phototherapy on serum bilirubin levels in preterm infants admitted to the neonatal intensive care unit (NICU) of Valiasr Hospital in Birjand, Iran. This in vitro study was conducted on preterm infants with gestational age of less than 37 weeks and weight less than 2500 g. Bilirubin levels in blood samples from 21 infants were measured before and after the addition of chicory essence or distilled water. Then, phototherapy was performed, and bilirubin levels were measured again. Data were analyzed using SPSS (version 21). The mean weight of infants was 1542.8 ± 453.5 g. In the chicory essence group, the mean total serum bilirubin was 5.29 ± 1.55 and 0.18 ± 0.07 mg/dL before and after the intervention, respectively (P < 0.001). The mean indirect serum bilirubin was 4.96 ± 1.59 and 0.18 ± 0.07 mg/dL before and after the intervention, respectively (P < 0.001). The mean changes in total bilirubin in the distilled water and chicory groups were 5.15 ± 1.70 and 5.43 ± 1.99 mg/dL, respectively (P = 0.62). The results showed that both distilled water and chicory essence decreased direct and total serum bilirubin concentrations. The indirect bilirubin changes were not significant, and there was no difference in the total bilirubin changes between the two groups. Totally, the chicory essence had no effect on reducing the serum bilirubin level in preterm infants.
Comparison of Moderate and High-Intensity Interval Training for Plasma Levels of Orexin-A, Insulin, and Insulin Resistance in Women with Overweight/Obesity
Authors: Allahverdi Hajar , Minasian Vazgen , Hovsepian Silva
Published: July 2022

Background: This study compared the effect of moderate and high-intensity interval training on plasma levels of orexin-A, insulin, and insulin resistance in women with overweight or obesity. Methods: Thirty-six women were voluntarily selected and optionally assigned into high-intensity interval training (HIIT; BMI = 29.43 ± 3.16 kg/m2, n = 12), moderate-intensity interval training (MIIT; BMI = 27.63 ± 2.82 kg/m2, n = 12), and control groups (BMI = 28.77 ± 4.28 kg/m2, n = 12). The exercise program consisted of selected high-intensity and moderate-intensity exercises with 75 - 95% and 65 - 80% of the heart rate reserve of initial fitness level for 30 - 60 minutes each session and three times a week. Plasm levels of orexin-A and other biochemical parameters were measured pre-and post‐interventions. Results: Following exercise interventions, plasma levels of orexin-A improved (MIIT: 23.23% vs. HIIT: 23.27%). Also, glucose (MIIT: -8.83 vs. HIIT: -6.01%), insulin (MIIT: -20.02% vs. HIIT: -25.38%), insulin resistance index (MIIT: -8.37% vs. HIIT: -3.28%), and body fat percentage (MIIT: -6.46% vs. HIIT: -7.23%) reduced in both MIIT and HIIT groups, but between-group differences were not statistically significant (P ≥ 0.05). A significant increase in the cardiorespiratory endurance of participants was observed (MIIT: 10.10 vs. HIIT: 14.83%) in both HIIT and MIIT exercise groups (P ≤ 0.05). Conclusions: The findings showed that HIIT and MIIT could improve orexin and some cardio-metabolic health biomarkers in sedentary women with overweight/obesity.
Petróleo, empresas e gestão do território: uma análise sobre o mercado de combustíveis no município de Serrinha
Authors: Silva John Wolter Oliveira , Léda Renato Leone Miranda
Published: July 2022

O presente artigo tem como objetivo analisar o processo de gestão territorial realizado pela atuação das empresas Postos de Revenda de Combustíveis (PRCs) no município de Serrinha/BA. Trata-se de um recorte da pesquisa intitulada “Estratégias e práticas espaciais das distribuidoras e postos de combustíveis como agentes de gestão do território em escala local – O caso do município de Serrinha/BA”, desenvolvida no âmbito do Curso de Geografia do Departamento Educação da Universidade do Estado da Bahia, Campus XI – Serrinha. Os PRCs representam uma parcela do conjunto de atividades ligadas ao setor do petróleo, se distribuem por todo o território nacional formando uma densa rede de estações de abastecimentos de veículos automotores, interconectados com as bases de distribuição regionais das principais empresas, como BR, Ipiranga, Raízen, Alesat, dentre outras. O arcabouço teórico-metodológico desta investigação ampara-se na perspectiva da abordagem qualitativa, sem excluir, necessariamente, o levantamento e análise de dados quantitativos, utilizando-os de modo complementar; com a discussão de pressupostos da Ciência Geográfica como Gestão do Território, Redes Geográficas e Circuitos Espaciais Produtivos e Círculos de Cooperação numa leitura de caráter geográfico-econômico aplicada na atuação empresas revendedoras de combustíveis na gestão do território no município de Serrinha/BA. Os procedimentos adotados foram a produção de mapeamento da configuração espacial dos PRCs de Serrinha/BA, pelo exercício de análise de imagens e da pesquisa de campo com visita aos 26 PRCs do município para aplicação de questionário e realização de entrevistas com gerentes e responsáveis, além do registro fotográfico da área dos postos e adjacências. Portanto, este trabalho, demonstrou o emaranhado de postos e distribuidoras que atuam nesta face do setor do petróleo no município, apresentando um potencial de disputas concorrenciais de preço e qualidade dos produtos e serviços, com tendência de expansão dessas relações ao considerarmos as transformações socioespaciais que um município tende a vivenciar no avançar do tempo histórico-geográfico.
Involvement of phospholipase C in the norepinephrine-induced hypertrophic response in Cardiomyocytes
Authors: Tappia Paramjit , Elimban Vijayan , Dhalla Naranjan
Published: July 2022

Norepinephrine (NE) is known to mediate cardiomyocyte hypertrophy through the G protein coupled a1 -adrenoceptor (a1 -AR) and the activation of the phosphoinositide-specific phospholipase C (PLC). Since the by-products of PLC activity are important downstream signal transducers for cardiac hypertrophy, the role of and the regulatory mechanisms involved in the activation of PLC isozymes in cardiac hypertrophy are highlighted in this review. The discussion is focused to underscore PLC in different experimental models of cardiac hypertrophy, as well as in isolated adult and neonatal cardiomyocytes treated with NE. Particular emphasis is laid concerning the a1 -AR-PLC-mediated hypertrophic signalling pathway. From the information provided, it is evident that the specific activation of PLC isozymes is a primary signalling event in the a1 -AR mediated response to NE as well as initiation and progression of cardiac hypertrophy. Furthermore, the possibility of PLC involvement in the perpetuation of cardiac hypertrophy is also described. It is suggested that specific PLC isozymes may serve as viable targets for the prevention of cardiac hypertrophy in patient population at-risk for the development of heart failure.
The awareness survey of clinical trials among medical students of south rajasthan, India
Authors: Malav Puja , Jhalani Gopal , Yadav Harsh , Dhaked Sunita , Bhatt Ravi
Published: July 2022

Background / Aim: Clinical trials are becoming more popular in India, but its awareness among the medical professionals remains far from satisfactory. Clinical research/trial can help medical students in developing the critical thinking abilities necessary for medical practice. In this era of evidence-based medicine, the integration of medical education and clinical research is crucial to ensure that scientific findings are translated into clinical practice. The present study aimed to find out the awareness about clinical trial among undergraduates. Methods: After obtaining approval from the Institutional Ethics Committee, this cross-sectional study was conducted on students from first to final year and interns after taking their consent. A sample of 390 respondents was analysed. A structured questionnaire was used to measure the objective of this study. The proportion of successfully answered questions in each group was computed and the results were sorted into pre-determined grades as follows: As excellent - 80-100 %, moderate - 50-80 % and terrible - less than 50 %. Results: Out of 390 undergraduate students, for the statement regarding the concept of clinical trials, around 28.2 % fell in the good category, 57.7 % in the average category and 14.1 % in the poor category. Regarding the statement about role of the United States Food and Drug Administration (US FDA) in approving new drug, 34.1 % were poor responders, 52.6 % were average and 13.3 % were good. The statements regarding the participation in the clinical research study showed that majority were in the poor and average response category (45.6 % and 41.5 %, respectively) as compared to only 12.8 % in the good category. Conclusions: The overall awareness of clinical trials was low among students, the medical undergraduates are future innovators, clinicians and scientific explorers. It would be better if they are trained at earlier days of learning about clinical trials/research and medical ethics. These can be made a part of medical curriculum so that they can build their concrete future.
The importance of a multidisciplinary diagnostic and therapeutic approach to painful symphysis syndrome in athletes
Authors: Vukosavljević Katarina , Bojović Miloš , Drljačić Dragana , Vukušić Kristina
Published: July 2022

Painful symphysis syndrome (pubalgia) in athletes is a particular injury, a painful condition, and dysfunction of the femoroinguinal region, which occurs due to the disproportion in strength between the abdominal wall muscles and the muscles of the lower extremities. This study aims to theoretically analyze the importance of a multidisciplinary diagnostic and therapeutic approach to painful symphysis syndrome in athletes. More than seventy causes of pubalgia have been presented in literature, most commonly linked to sports factors. Activities that include repetitive strong kicks, rotational movements, circumduction, and torsion, are risk factors. The syndrome was first registered in football players, and it mostly occurs in male athletes under the age of forty. Establishing a diagnosis is difficult, due to the complex anatomy and the overlapping of symptoms between different groin injuries. The therapeutic approach depends on the complexity of the injuries and the dynamics of the patient's recovery. It entails observing the principles of initiating treatment with minimally invasive modalities and reserving surgical treatment as the final therapeutic option, after which it is necessary to conduct an appropriate rehabilitation program, tailored to the pain and the dynamics of recovery. Most athletes resume their sports activities after two to three months, with no recurrence of pubalgia after surgical treatment. However, bearing in mind that the occurrence of pubalgia prevents the patients from engaging in sports activities over a prolonged period, special attention should be directed towards the prevention of this painful syndrome. Taking this into consideration, prevention should begin at the earliest age, through a daily program of exercises for strengthening the muscles of the anterior abdominal wall, with special emphasis on the oblique and transverse abdominal muscles.
An Examination Of The Statistical Behavior Of Planing Craft Peak Vertical Accelerations In Irregular Waves
Authors: Grimsley Jennifer , Liu Yu , Hou Gene
Published: July 2022

Planing craft operating at high speeds in waves can experience high, repetitive vertical accelerations. Due to the random, nonlinear nature of vertical accelerations, the data are best handled using statistical processes. Vertical acceleration criteria for planing craft design exist in a wide range of different statistical forms. Structural criteria currently require statistical averaging of extreme (Peak) value data. Other criteria such as habitability criteria consider the Root Mean Square (RMS) of the entire (Parent) data signal. Historically, Peak vertical accelerations were thought to fit the Exponential distribution as reported by Fridsma (1971). Design regression methods of Savitsky, Brown (1976) and Hoggard, Jones (1980) as well as classification standards adopted this conclusion. However, several published papers have raised doubt to the accuracy and validity of this Exponential distribution assumption. This paper examines the statistical behavior and distribution of Peak vertical accelerations data for planing craft in irregular waves to determine if the Exponential distribution is appropriate. This study is a continuation of research that initiated as a feasibility study of four (4) data sets as discussed in Grimsley (2009) and is now extended to an additional twenty-four (24) data sets collected from full-scale and model scale testing of different planing hulls.
Test Platform Development for Measuring SES Response to Wave Loads
Authors: Kouvaras Nicholas , Dhanak Manhar , Xiros Nikolaos
Published: July 2022

The goal of this project is to develop a test platform for measuring SES response to wave loads. The platform is designed and built incorporating a self-propelled vehicle with data acquisition and navigation capabilities. Theoretical analysis is performed, various hardware and electronic parts are designed and built and software applications developed. Wave tank experiments are conducted for test platform evaluation and determination of vehicle response to a range of wave conditions. Furthermore, a 3D model of the AIRCAT scale model SES is created. The theoretical analysis shows that the scale effects in some cases are great, so resonance phenomena cannot be observed. The experimental results clearly show that the heave, pitch and aircushion excess pressure fluctuations increase as mean aircushion excess pressure increases. The bow skirt arrangement needs improvements and further experimentation is necessary in order to draw conclusions about the wave loads applied on the skirt.
Free Surface Measurements of Large-Scale Breaking Transom Waves using Quantitative Visualization
Authors: Beale Kristine L.C. , Fu Thomas C. , Wyatt Donald C. , Walker Don C.
Published: July 2022

Experimental observations support the physical understanding of breaking ship waves, a challenging multiphase flow regime. The Quantitative Visualization (QViz) measuring technique allows non-uniform flows which are typically difficult to characterize.

Advanced image processing algorithms have been developed to allow the standard QViz approach to obtain detailed, time-varying free surface elevations of the waves generated behind a transom-stern. The resulting surface roughness and free-wave spectral content provide a method of breaking-wave region assessment, as well as guidance and verification for numerical models.
A Directional Wave Array Using Ultrasonic Sensors
Authors: Fullerton Anne , Fullerton Brian , Fu Thomas
Published: July 2022

A typical approach to determining wave direction is to assume that the sea surface is made up of several sinusoidal waves of various frequencies and directions. One method to determine wave direction as a function of frequency is to use an array of time-series point measurements of water elevation. These multi-element arrays can either be linear or polygonal, and utilize phase, time and path differences to determine wave direction. Typically, pressure gages or capacitance wave probes are used in a directional wave array, however, recently at the Naval Surface Warfare Center, Carderock Division, a directional wave array was employed using five ultrasonic level sensors in an array to quantify wave direction in the Maneuvering and Seakeeping basin (MASK). Two methods were then used to calculate wave direction, a phase/path/time difference method of Esteva which yields a mean direction for each frequency bin, and the Maximum Likelihood Method (MLM), which yields a directional spectrum for each frequency bin. Testing in the MASK was performed to assess the feasibility of using the array on a moving vessel to measure directional seas in the field.

The sensors' sampling rate was set at 20 Hz and the five sensors were set up in "slave-master" mode, with the “master” driving the four “slaves” to sample concurrently. This method helped to reduce cross-talk between the sensors and their subsequent dropouts and spikes. Data was collected using LabView software with custom written real-time analysis in MATLAB. Wave direction was measured with regular and irregular waves, with unidirectional and bi-directional systems ninety degrees apart. Tests were performed with the array in a stationary position, as well as with forward motion and simulated pitch and roll motions to assess the potential of using the array on a moving vessel. Results with the stationary array from the basin are good, with the array correctly measuring regular waves of a single frequency from two directions, as well as irregular waves from two directions. Results from the system undergoing motions have increased variability.
Modeling of a Towed Array: Scale Model Experiments and Numerical Simulations
Authors: Seto Mae L. , Williams Christopher D.
Published: July 2022

This paper looks at developing a numerical model of a ship and its tow system as the tow system is winched in during high sea states. The focus is on the vertical plane dynamics with the ship and tow system moving at constant heading and constant speed. The goal is to develop the Ship-Tow Interaction in Sea State (STISS) model to determine, for e.g. whether the tow system can be winched in / out without interacting with any part of the transom. STISS makes it possible to decide for a given tow system what ships of opportunity can be used as the tow platform based on only static characteristics of the tow, the tow depth as a function of scope and speed, ship transom geometry, and the ship RAOs. A unique blend of model scale tests and numerical modeling is used to help develop the STISS model. Semi-captive scale model tests of the ship with a deployed tow system were performed in a flume tank to provide validation data for up to 10 knots full scale. The partially validated STISS predictions appear reasonable and the model is awaiting full scale validation. The ability to make predictions for this complex tow condition has not been reported in the literature.
Experimental Facilities for the Simulation of Breaking Bow Waves and the Hull Boundary Layer
Authors: Duncan James H. , Shakeri Mostafa , Maxeiner Eric , Tavakolinejad Mohammad
Published: July 2022

In this paper, two experimental facilities that simulate separate regions of the flow about a slender ship moving at constant speed in calm water are described. In the first facility, divergent bow waves are simulated. These waves are generated by a method known as 2D+T in which a two dimensional wave maker moves horizontally and deforms in a manner that approximates the profile of the intersection of one side of a ship hull and a fixed vertical plane oriented normal to the ship's path. In the second facility, the spray generation and air bubble entrainment processes near the water surface along the hull boundary layer are simulated. The boundary layer simulation is created with a suddenly started vertically oriented surface piercing flat wall created by a stainless steel belt (a 15-m long loop that extends 1 meter below the water surface and driven by two vertically oriented rollers placed about 7.5 m apart) moving horizontally at full-scale ship speeds in a large water tank.
Design and Use of a 3DoF Motion Mechanism for Large Amplitude Forced Oscillation Model Testing
Authors: Grant David , Bassler Christopher , Percival Scott , Walker Don
Published: July 2022

Forced motion testing is one of the basic tools of hydrodynamic model testing. It is used to determine ship performance – from the most basic resistance testing to more advanced seakeeping and loads testing. A novel three degree-of-freedom motion mechanism is described, which enables large amplitude, forced oscillation model testing. The mechanism has been used to produce extreme roll angles about a virtual center of roll that can be adjusted on the- fly in the control software. The mechanism has also been used to enable forced sway and forced heave testing, and can also be used to produce combinations of all three motions. Basic theory and details of the concept design, detailed design, construction considerations, and control software as well as experimental uses and considerations for future improvements are presented and discussed.
Facility Comparison on Model Calm Water Resistance Characteristics of a Trimaran
Authors: Royce Richard , Qi Jianjun , Datla Raju , Waters Jennifer , Bucknall Richard , Greig Alistair , Smith Tristan
Published: July 2022

Few efforts have been made to compare model test results from different facilities for possible bias on the measurements. The purpose of this study was to investigate the differences in model test results of a trimaran hullform that exist among the towing tank facilities at four academic institutions: Webb Institute, United States Naval Academy (USNA) and University College London (UCL) and Stevens Institute of Technology. Two models (at 1/125th scale and 1/80th scale) of a US navy’s 268m trimaran concept design were built and tested at the four facilities to study the optimal side-hull location for calm water resistance. The model is equipped to facilitate movement of the side-hull location both longitudinally and laterally. Model tests were conducted for various outrigger locations over a range of Froude numbers from 0.1 to 0.5. The measurements included resistance, trim and heave. The agreement among the four facilities was found to be acceptable and the differences were explained in terms blockage effects and test methodologies.
Toward a More Rational Approach for Planning Ship Model Turbulence Stimulation
Authors: Murphy Jason C. , Schultz Michael P. , White Gregory J. , Pavkov Mark E.
Published: July 2022

Specifying the type, size, and position of turbulence stimulation devices for towing tank models can be a challenging endeavor. This is particularly true when testing small-scale models and/or models operating at low speeds. Presently, the guidance for test engineers comes primarily in the form of empirical relations provided in classic papers on the subject and from one’s own testing experience. In the present work, an alternative approach is investigated. Specifically, the use of the local Reynolds number based on the momentum thickness in the model hull boundary layer, Rn_, and the pressure gradient parameter, K, to guide the sizing and placement of turbulence stimulation devices is explored. This approach is common in wind tunnel transition studies, but to the authors’ knowledge, has not received a great deal of attention in the towing tank community. This is likely due to the difficulty in measuring these quantities in a towing tank. To avoid this issue, these parameters were calculated for the hull geometry of interest using simple, web-based computational fluid dynamics (CFD) codes. Experiments were carried out using models instrumented with flush-mounted hot-film anemometers. The output signals from the anemometers were analyzed and were able to detect the fraction of time that the boundary layer was turbulent, termed intermittency. Results from both a flat plate model and a wall-sided, two-dimensional model with streamwise curvature are presented and indicate that the present approach has merit. For example, the intermittency observed in the boundary layer correlates well with Rn_. Also, the effective ‘jump’ in Rn_ provided by the turbulence stimulation device is clearly observed in the results. However, further research is required in order to produce a useful tool for test engineers to size and place turbulence stimulation devices on models.
Hull Forms with Low Cruise Speed Resistance and High Speed Dynamic Stability-Experiments and Computations
Authors: Ranzenbach Robert , Bowles Jeffrey
Published: July 2022

The performance of three different shaped hulls was evaluated by experiments and computations to identify a hull form that provides low calm water resistance at cruise speed while remaining dynamically stable at high speed. The target cruise speed was at a length Froude number of 0.45, and the target high speed was at a length Froude number of 1.0.

The three hybrid hulls utilized a common round bilge after body shape derived from the NPL systematic series mated to different bow shapes:

_ Hull #1- Double Chine

_ Hull #2- Round Bottom with Spray Rail

_ Hull #3- Single Chine

The 1:20 model-scale experiments were performed at the SSPA Towing Tank to evaluate the calm water resistance and dynamic stability characteristics of the three hulls. Two displacements and up to three Longitudinal Center of Gravity positions were evaluated for each model. A computational study using STAR-CCM+, a Reynolds Averaged Navier-Stokes solver, was performed to investigate a limited number of the test conditions evaluated at SSPA. The computations included time-accurate runs designed to duplicate the dynamic stability testing methodology utilized in the experiments. Model #3- Single Chine was found to represent the lowest drag of the candidate hull forms at cruise speed while retaining dynamic stability at high speed. The calm water-resistance of this hybrid hull shape at cruise speed was found to be within 8.5% of a purely round bilge hull form as represented by the NPL systematic series.
Probabilistic-Based Design ofWaterjet Propulsors for Surface Effect Ships
Authors: Kramer Matthew , Motley Michael , Young Yin Lu
Published: July 2022

Surface Effect Ships (SES) have great potential to increase the speed and cargo capacity of modern surface vessels. The resistance characteristics of an SES vary widely as a function of speed, with notable presence of one or more drag humps. The magnitude of these drag humps has been shown to be greatly affected by changes in water depth (Mantle, 1973; Van Dyck, 1972; Doctors, 2006). Additional variations in resistance due to sea state must also be accounted for and consequently, the selection and sizing of an appropriate propulsion system is not trivial. For highly loaded applications, SESs typically employ the use of waterjet propulsion. The propulsion system must satisfy many criteria, including cavitation avoidance, powering limitations, and maximizing fuel efficiency. These three goals are difficult to meet simultaneously, particularly when the performance of the system over the full operational range needs to be considered. Hence, an appropriate methodology is necessary to choose the optimal solution. The objective of this work is to develop a systematic methodology for the first-order design of a waterjet by optimizing the overall efficiency and satisfying all performance requirements over the entire operating regime, as opposed to selecting a discrete number of design points. In this work, a preliminary design of a waterjet propulsion system for a full-scale SES with a top speed of 40 knots is performed with consideration for cavitation inception and variations in resistance due to changes in water depth and sea state. The resistance characteristics are determined from model tests as reported by Van Dyck (1972). The waterjet performance is then predicted for various nozzle sizes using one-dimensional momentum theory. The optimal waterjet size is then selected based on the joint probability distribution of the operational space as functions of the vessel speed and resistance. Finally, the thrust characteristics of the optimal waterjet are presented and compared against ones designed for the endurance speed and top speed.
Analysis Of A Torpedo Anchor During Installation In A Deepwater Ocean Basin
Authors: Sales Junior Joel Sena , Franchi Wilson Roberto , Trindade Marcela , Fernandes Antonio Carlos , de Carvalho e Silva Daniel Fonseca
Published: July 2022

On deep water applications the mooring lines can be held in place by VLA (Vertical Load Anchoring) systems. This is to avoid a too large anchoring radius. An alternative that has been used is the so-called torpedo anchor. The name torpedo comes from its installation, and is, in fact, a pile with side fins that improve the anchoring properties by soil friction. However, these fins are far ahead from the pile mid-section which leads to an unstable situation during launching through the water, when the pile is released 100 m from the sea bottom. The kinetic energy at the touch point on the bottom ensures the pile penetration into the sea floor. In order to access the directional stability and other factors of torpedo-anchors launching, a 1:15 scaled model was constructed and launched in several conditions on a 15 m water depth basin (LabOceano). The present paper discusses the model tests instrumentation, data acquisition and analysis of the results.
Projeto de reestruturação do programa 5S em uma indústria do setor moveleiro
Authors: Tokarz Barbara , Pereira Delcio , Fagundes Alexandre Borges , Beuren Fernanda Hänsch
Published: July 2022

O objetivo deste trabalho é descrever o processo de reestruturação da metodologia 5S aplicada em uma indústria do ramo moveleiro. O trabalho tem caráter descritivo, e foi desenvolvido em três fases: i. levantamento do problema; ii. reestruturação de processo; iii. treinamento das equipes. O processo de avaliação do 5S foi reestruturado, e diversos treinamentos foram realizados com as equipes da empresa, implicando em uma melhoria nos resultados de auditorias de 5S na organização. O trabalho constatou a importância do comprometimento de todos os colaboradores, do alinhamento de liderança e alta gerência da organização, e a aplicação de um método de avaliação claro e transparente para o sucesso da metodologia 5S. As etapas apresentadas no trabalho, bem como o método de avaliação e o comitê de 5S propostos podem ser aplicados em outras organizações, destacando o valor do trabalho.
Planejamento tributário: proposta para uma empresa de fornecimento de refeições preparadas
Authors: Broietti Cleber , Valério Erica Dias , Nishi Josiane Mitiko , Soato Jean Marcelo Arruda
Published: July 2022

Uma maneira de reduzir os dispêndios tributários de uma empresa através das disposições legais é por meio do planejamento tributário. O presente estudo teve como objetivo realizar planejamento tributário e assim identificar o regime mais adequado para uma empresa de pequeno porte localizada em uma cidade no norte do Paraná, cuja atividade é de fornecimento de refeições preparadas. A pesquisa classifica-se quanto aos objetivos como exploratória, quanto à abordagem como qualitativa e utiliza o estudo de caso nos procedimentos metodológicos. Por conseguinte, dispondo das informações dos demonstrativos contábeis fornecidas pela empresa, foi executada uma simulação com os três regimes tributários, simples nacional, lucro presumido e lucro real com a finalidade de verificar qual seria o regime menos oneroso. A análise dos tributos obedeceu a legislação vigente dos regimes conforme o ramo de atividade da empresa. A opção pelo simples nacional resultou na menor tributação acarretando a potencialização do resultado da empresa, gerando maior lucro. Contudo, pode-se observar uma diferença exorbitante nos dispêndios tributários entre os diferentes tipos de tributação, produzindo percentuais de lucratividade distintos. A pesquisa contribuiu de maneira teórica para a área de Contabilidade Tributária, pois utilizou como amostra, um ramo de atividade ainda pouco explorado em outros estudos.
Análisis crítico de la violencia estetizada. Caso del colectivo Los Ingrávidos en México
Authors: Martínez Morales María
Published: July 2022

This paper deals with a study of experimental cinema as a political action based on an approach to the artistic creation process of the Los Ingrávidos collective. The work analyzes the methodology approached by the group to delve into the process of creating the work Sangre Seca and Trasmision/Desencuadre, with the aim of understanding the social and political articulation through the experimental cinema of a group that emerges in the face of situations of Live violence in Mexico City. For this, we approach a study of the image of an emotion cinema that works with archive material for the construction of counter-narratives, images that challenge the information offered by the media offering other readings. As a result of the study, we expose arguments that claim the formative power of the image to articulate alternative actions in cases of aestheticized violence.

El presente trabajo aborda un estudio del cine experimental como acción política a partir de una aproximación al proceso de creación artística del colectivo Los Ingrávidos. El trabajo analiza la metodología abordada por el colectivo para adentramos en el proceso de creación de la obra Sangre Seca y Trasmisión/Desencuadre, con el objetivo de comprender la articulación social y política a través del cine experimental de un colectivo que emerge ante las situaciones de violencia vividas en la ciudad de México. Para ello, nos acercamos a un estudio de la imagen de un cine de agitación que trabaja con material archivo para la construcción de contra-relatos, imágenes que desafían la información ofrecida por los medios de comunicación ofreciendo otras lecturas. Como resultado del estudio, exponemos argumentos que reclaman la potencia formadora de la imagen para articular acciones alternativas ante casos de violencia estetizada.
Textiles maternos: una revolución reflexiva de las mujeres latinoamericanas frente al patriarcado social
Authors: León Río Belén
Published: July 2022

In this article we want to make known the creative and organizational process of activist art of Latin American women in whose experimental projects textile materials and techniques would be protagonists as a means of showing society their insubordination to the power of patriarchy and social injustice. These women who silently embroider in the streets the names of their murdered companions, who collect the garments of those disappeared migrants who plot fictions from the creative in search of their interiority, would focus our attention through these maternal textiles as emotional symbols impregnated by the energy of the new contemporary martyrs that are made visible through their artistic actions and the community of volunteers committed to these projects. They, like the great goddesses, would carry the cloak, the veil and in their hands the thread, the spindle and the distaff, thus presiding over the birth of forms, the passing of time and the fertile power of the goddess as a symbol of creation and of social transformation.

En este artículo queremos dar a conocer el proceso creativo y organizativo del arte activista de las mujeres latinoamericanas en cuyos proyectos experimentales serían protagonistas los materiales y técnicas textiles como medio de mostrar a la sociedad su insumisión ante el poder del patriarcado y la injusticia social. Estas mujeres que bordan en silencio en las calles los nombres de sus compañeras asesinadas, que recogen las prendas de aquellos migrantes desaparecidos que traman ficciones desde lo creativo en busca de su interioridad, focalizarían nuestra atención a través de estos textiles maternos como símbolos emotivos impregnados por la energía de los nuevos mártires contemporáneos que se hacen visibles a través de sus acciones artísticas y la comunidad de voluntarias comprometidas con estos proyectos. Ellas al igual que las grandes diosas portarían el manto, el velo y en sus manos el hilo, el huso y la rueca presidiendo así el nacimiento de las formas, el devenir del tiempo y el poder fecundo de la diosa como símbolo de creación y de transformación social.