bluuebunny/crossref_metadata_2025 huggingface dataset:
Braila Suspension Bridge: Construction Methodology of the Pylons
Authors: Berber Oguz , Inoue Manabu , Cetinkaya Tunc , Shima Takanori , Koc Cihat
Published: June 2022

The 2 km long suspension bridge with a main span greater than 1 km which crosses the Danube River is the focal point of the 23 km highway project in Braila/ Romania. The bridge will carry two lanes of highway traffic in each direction. IHI Infrastructure Systems Co., Ltd. is the EPC contractor for the project together with Astaldi SpA.

To accelerate the bridge construction, the slip-form method was chosen for the construction of the concrete pylons and precast cross beams were installed by the heavy lifting method. This paper discusses the effects of the pylon’s construction method on the structural design and geometry control of the pylons during construction.
The New City Bridge in Drammen, Norway. Designing a new urban landmark for an extreme environment.
Authors: Escallón Miguel , Rando Mario , Solbjør Thor Olav , Halaczek Bartlomiej
Published: June 2022

Following a competitive tender in 2018, the City of Drammen, Norway, has commissioned a new bridge, which will replace the city bridge (Bybrua), an ageing structure across the river Drammenselva. Located at the heart of Drammen, the bridge will be a pivotal link in the local infrastructure network, improving connectivity for public transportation (bus lanes) and cycle networks while providing a safe and enjoyable route for pedestrians. Once finished, the bridge will significantly improve the quality of the public realm, providing direct access to the platforms of the local main station as well as tying into two new urban plazas at both ends of the bridge including the barrier free access to the re-developed riverbank. The design stage faced several technical challenges, including the spanning of a 170m-wide river with poor bedding conditions as well as the construction above live railway of the Drammen Station. Concerns over ice loading, temperature extremes and the impact of a marine climate had to be addressed and new concepts for pedestrian and road safety on deck were developed. Located in a prominent spot, great diligence has been given to developing a modern architectural language that is both elegant and functional and defines the bridge as a new landmark for the city. The paper explores the development of the design from concept to tender stage and discusses the technical and architectural challenges and how they have been addressed by the interdisciplinary team of engineers, architects, landscape architects and designers.
Reconstruction of the Vilemov Viaduct on the railway line Rumburk - Sebnitz
Authors: Kalíšek Pavel , Rusňák Marek , Sláma Jakub , Šoukalová Gabriela , Šťasta Petr , Václavík Dalibor
Published: June 2022

On the railway track from Rumburk to Sebnitz, near the village Vilémov u Šluknova, there is a seven- span bridge structure with a total length of 217.3 m. In the first half of 2021, five bridge spans of the original riveted steel structures from 1904, which was at the end of its service life, were replaced by welded steel truss bridge superstructures.

Two remaining adjacent arched spans were also part of the renovation and their stone arches were rehabilitated as part of this process.

The outermost stone arches have a span of 7.00 m and the span of each of the five inner steel truss superstructures is 36.80 m.

The bridge crosses the Vilemov Brook valley and at its highest point it stands 34.20 m above the existing terrain. The height of the bridge in particular, combined with an unfavourable course of the terrain below the bridge, was the reason for the chosen erection procedure - a combination of longitudinal launching and lowering onto the bridge piers through a set of temporary structures.

FIRESTA, as the leading participant of the association of companies "Společnost – most přes Karolinino údolí", is the supplier of production and assembly documentation for the whole bridge and manufacturer of three out of five of the aforementioned new steel superstructures. In total about 581 t of structural steel was used for the production of all five steel spans.
New beam element for horizontally curved steel-concrete composite box girder bridges
Authors: Campo-Rumoroso Iván , Ramos-Gutiérrez Óscar Ramón , Cambronero-Barrientos Francisco
Published: June 2022

Box girder cross-sections are typically used in the design of bridges in curved alignments due to their excellent torsional properties. However, beam elements available for the analysis of those bridges including torsion and distortion effects are scarce and limited to specific geometries. The intend of the new proposed finite element is to provide a tool for the analysis and design of any symmetrical steel-concrete composite box girder bridge in either straight or curved alignment including torsion and distortion effects.
Toward Crack-based Assessment of Shear-distressed Reinforced Concrete Infrastructure
Authors: Zaborac Jarrod , Bayrak Oguzhan , Hrynyk Trevor
Published: June 2022

The prioritization of repair and rehabilitation efforts for concrete infrastructure is typically informed by damage observed during routine field inspections. Field observations are qualitatively categorized into condition states based on pre-established measurement limits that do little to account for the member-specific details that affect structural behaviour. As a result, conventional strategies do not typically provide reliable, quantitative predictions about the implications of observed damage. Several mechanics-based approaches for the assessment of shear-distressed reinforced concrete structures have been proposed within the last decade. This paper presents an overview and brief comparison of two assessment procedures. Ultimately, this research aims to develop recommendations for refined numerical procedures that assist infrastructure renewal experts to successfully manage the existing infrastructure inventory.
Finite element analysis of wind turbine tower with a tapered cross-section using various finite element models
Authors: Parol Jafarali , Al-Sanad Shaikha , Ashour Mohammad , Husain Rayan , Al-Baghli Hussain , Al-Asfour Fatemah , Al-Duaij Hamad , Al-Khayat Muhammad
Published: June 2022

In this paper, we present the finite element analysis results for a wind turbine tower using three different finite element models. A typical three-bladed upwind onshore wind turbine, with rated power production of 2 MW, is chosen as a reference case study. Tapered cross-section of the wind turbine tower has been incorporated in the inner product while estimating the stiffness matrix of the finite element model. Linear static analysis is carried out for a typical aero thrust load applied at the tip of the tower. The finite element results are benchmarked using 3-D linear and quadratic brick and shell elements using ANSYS. It is shown here that Euler-Bernoulli beam model predicts the response of the wind turbine tower quite accurately. The beam model is computationally more efficient compared to shell and solid element models without compromising the accuracy of the results.
Nonlinear Analysis of Reinforced Concrete Structural Elements
Authors: Waghmare Ambadas , Ramaswamy Ananth
Published: June 2022

Nonlinear analysis of reinforced concrete elements is the focus of the present study. A concrete damage plasticity model available in Abaqus commercial software has been modified using user defined modules to include the concrete stiffness degradation and growth in the Poisson’s ratio in plain concrete with increase in compressive strain. In reinforced concrete the degradation of cracked concrete in compression, tension stiffening effects and bond slip have been considered to enhance the prediction of responses observed in reinforced concrete elements under various loadings. The model predicts the salient features of multiaxial response observed in experiments on plain and reinforced concrete elements subjected to various loads.
D4R7. New Danube Crossing at Bratislava
Authors: Bajo Pavía Carlos , Martín-Tereso López Luis , Candel Hernandis José Vicente , Włodzimirski Wojciech , Morávková Božena , Vöröš Ivan , Chalupec Adrián , Kopčák Juraj , Simón-Talero José Manuel , Carriazo Ángel , Merino Ramón , Stráský Jiří , Novotny Petr
Published: June 2022

Bratislava Bypass project – D4R7 comprises D4 Highway with a length of 27 km and R7 Expressway with a length of 32 km. It was established as a Public-Private Partnership including design, construction, financing, operation, and maintenance. More than 100 concrete and steel bridges were executed within the project with different typologies, box-girder, beam bridges, post- tensioned slabs and culverts, ecoducts, cyclist and pedestrian bridges, as well as refurbishment of several structures in one of the major interchanges in Bratislava – Prievoz.

The most significant part of the D4R7 project is the 6th crossing over the river Danube, its floodplain, and adjacent area in Bratislava including the environmentally protected area of Natura 2000. It consists of a 3 km long highway elevated on the bridges and viaducts.
Nonlinear Behavior Identification of HDR-S Bearing Using Neural Network for Seismic Structural Design
Authors: Montes Katrina , Dang Ji , Igarashi Akira , Tan Yuqing , Himeno Takehiko
Published: June 2022

The initial parameter selection is the bottleneck of optimization method in determining the nonlinear parameter of seismic isolators during seismic isolation design. Bilinear model is easy to understand physically but more complicated nonlinear models are hard to explain due to hidden characteristics. Therefore, this study used a machine learning based approach which aims to classify the suitable nonlinear model and predict the nonlinear parameters of an HDR-S experiment data at both low and room temperature. The trained neural network model A shows that at low amplitude, Bilinear Model was classified, however at higher amplitude, Modified Park-Wen model governs. On the other hand, neural network model B successfully predicted the five parameters of Modified Park-Wen model and solve the initial parameter assumption problem of KH Method. The proposed inverse approach can be used to train an ANN model using more complicated nonlinear models.
Externally prestressed concrete: anchor block 3D yield design
Authors: Fliscounakis Agnès , Ferradi Mohammed-Khalil , Arquier Mathieu
Published: June 2022

In externally prestressed structures, anchors and deviators are used to connect tendons to the main structure. Those reinforced concrete blocks are exposed to large stress concentration and in many cases need 3D non-linear computation to be assessed properly, especially when they are beyond the standard framework. This local stress computation remains a great challenge for externally prestressed bridge design or large span girders design and is often poorly evaluated.

This paper presents the results of a nonlinear 3D analysis of an anchor block belonging to an 80 meters long externally prestressed box girder. This analysis has been done for an actual engineering study (Roissy Charles de Gaulle Airport, Paris) to understand the concrete stress behaviour and cracking causes at the anchorage zone. Each reinforcing bar is modelled, plain concrete is described by the Rankine criterion, and finite elements are 10-nodes tetrahedrons. Then, a yield design computation is performed to assess the safety factor on the ultimate state loading. For the collapse load, an elastoplastic analysis is computed thanks to a static approach and a kinematic approach. This dual approach gives an error estimation in constitutive law. Eventually, stress flaws and rebars constrains are analysed in order to understand the general behaviour of the anchor.
Full-scale Fatigue Simulations for Reinforced Concrete Bridge Slabs with Multi-scale FEM System with Solid-Liquid Two Phase Model
Authors: Takahashi Yuya , Furukawa Tomoya , Fang Jie , Ishida Tetsuya , Tsuchiya Satoshi
Published: June 2022

This paper presents fatigue analysis studies with a full-scale bridge model with multi-scale integrated analysis and a study of the disintegration progress on the upper surface of bridge deck slabs. A full-scale bridge model considering one span of reinforced concrete (RC) decks on steel girders was developed, and it was shown that the relationship between the fatigue lives of the full- scale model and the single-panel model can be reversed whether the condition is dry or wet. Fatigue damage propagation can originate from internal horizontal cracks under wet conditions. In addition, a numerical analysis of fatigue using a disintegration propagation model was conducted, and it reproduced the behavior and damage progress in actual structures. With the sensitivity analyses with various parameters, the dominant factor governing the disintegration progress on the RC slabs was determined, which can be applied to the prediction of disintegration progress.
Computational Sensitivity Analysis for Construction Stage Models
Authors: Fußeder Martin , Bletzinger Kai-Uwe
Published: June 2022

This paper is about sensitivity analysis and discusses how computational approaches like adjoint sensitivity analysis can be adopted for structural analysis models which consider the construction stage process. It is also shown how the sensitivities can be visualized by sensitivity maps and how these can significantly support the use of sensitivity analysis in structural engineering practice. In addition to the methodological developments, the paper also focuses on demonstrating the application of the approach. By means of an example, sensitivity distributions based on a holistic building model and a construction stage model are computed and compared. In that regard, the paper discusses how sensitivity analysis can provide information about the properties of the used models and how sensitivity data can assist the model assessment.
An Engineering Approach to Analyze Displacement Rate in Embedded Rail System Coupled with Bridge
Authors: Stančík Vojtěch , Ryjáček Pavel
Published: June 2022

Estimation of coupling parameters is the key for calculating the interaction between embedded rail system (ERS) and a bridge. It was proven recently that material parameters of polymer-based elastic poured compound (EPC) and other parts of ERS are subjected to change with temperature and displacement rate. Both effects have been discussed in the scientific literature quite thoroughly. However, very little is known to this day about how to address the displacement-rate along the bridge. Therefore, a new engineering approach for analyzing the bridge-ERS track relative displacement-rate is discussed in this contribution. What parameters are affecting the displacement-rate in the ERS? How is the displacement rate in ERS longitudinally distributed? How should be the displacement rate in ERS calculated considering longitudinal and vertical loads? These questions are answered in the paper based on the results of a vast parametric analysis.
An analysis of the potential for improving cement efficiency through functionally graded concrete elements with durability-driven concrete specification
Authors: Forsdyke Jessica C. , Lees Janet M.
Published: June 2022

Cement, the primary binding component of concrete, is responsible for 5-6% of global CO2 emissions. In functionally graded concrete elements, properties are optimised by varying the concrete mix composition over the volume, allowing for allocation of cement intensive mixes only where necessary for resistance of load or aggressive substances. In practice, this is achieved by layering of different concrete mixes within the same formwork, providing an opportunity for reduction in overall cement content compared to conventional methods where a single concrete mix is used for entire elements. This work discusses possible applications for functionally graded elements that are optimised for durability resistance. Potential cement savings for various scenarios are calculated by comparison of traditional homogeneous concrete elements with functionally graded layered ones. The results show that the potential for reducing overall cement demand of structures whilst maintaining equivalent performance is significant.
Application of Damped Outriggers in Renovation of Super Tall Building Structures
Authors: Hu Daohang , Zhao Xin
Published: June 2022

The primary task of super tall buildings renovation is to reduce the engineering amount for existing structures. The additional viscous damping device can effectively increase the structural energy consumption of super tall buildings under earthquakes, thereby reducing the internal force and deformation response of the structure, and achieving the purpose that reduce the amount of renovation works. Assembling the deformation amplification device can effectively improve the energy consumption capacity of the viscous damping device. There are two damping types of deformation amplification for super tall buildings: toggle brace dampers and damped outriggers. Toggle brace dampers is suitable for high-rise building structures with shearing deformation, and damped outriggers is suitable for high-rise building structures with bending deformation. Based on the actual engineering case, this paper studies the viscous damper (damped outriggers) with outrigger deformation amplification device. Firstly, the sensitivity of installing damped outriggers on different equipment floors is analyzed, and the influence of different installation positions on the efficiency of damped outriggers is determined. Secondly, the reasonable number of damped outriggers is studied to effectively reduce the reconstruction work of the existing structure and control the number and parameters of viscous dampers in a reasonable range. Finally, the influence of the damped outrigger on the structural response of the unbuilt part is analyzed, and how to further optimize the structural members of the unbuilt part is studied.
Experimental and numerical study on unequal lateral impact behavior of Circular RC and CFRPRC components
Authors: Liu Yanhui , Khalil Al-Bukhaiti , Zhao Shichun , Hussein Abas , Nan Xu , Lang Yang , Yan Xing Yu , Han Daguang
Published: June 2022

The dynamic response of Reinforced Concrete (RC) and Carbon Fiber Reinforced Polymers with Reinforced Concrete (CFRPRC) is studied. These tests were performed on RC members covered in one to six layers of CFRP. Once the energy is high, the two components' deflection-time histories are produced. It increases component impact resistance in studies. Component deflection is reduced by carbon fiber reinforced polymer (CFRP). RC members shear while CFRPRC components bend due to significant concrete damage. It fractures more easily when wrapped with CFRP. The model's predictions match the tests adequately. A numerical simulation study looked at the impact force of members under unequal-span lateral collisions. Regardless of impact velocity, lateral impact on an unequal span induces severe shear failure of RC members. However, CFRPRC component bending deformation reflects impact velocity. Increasing the reinforcement ratio of RC members has little effect on the impact resistance of CFRPRC components. To avoid steel fracture, greater reinforcing ratios are used.
Hyperbox Modelling for Externally Bonded Carbon Fibre Reinforced Polymers on Beams
Authors: Chua Alvin , Jason Maximino Ongpeng , Kathleen Aviso
Published: June 2022

Carbon fibre reinforced polymers (CFRPs) are common retrofitting materials accounting for their high strength, light weight, durability, among others. Due to the lack of a worldwide consensus, much research about externally bonded (EB) FRPs on beams focus on determining the shear capacity contribution (𝑉𝑉𝑓𝑓), in which a parameter called the effective strain (𝜀𝜀𝑓𝑓𝑓𝑓) is often used. The 𝜀𝜀𝑓𝑓𝑓𝑓 is often limited by the governing failure mode (typically debonding). Factors like the complexity of shear phenomenon and composite systems hinder such consensus. Machine learning (ML) applications have been used to model complex behaviour using datasets. A hyperbox modelling ML approach with mixed-integer linear programming (MILP) is used, providing interpretability and versatility in results modelling. This study determines the 𝑉𝑉𝑓𝑓 sufficiency of EB CFRPs on beams while minimizing prediction errors through the 8 rule-based models produced for the EB CFRP configurations.
Mismatching Skills, The Currect Problem Among Vocational Graduates in East Java
Authors: Luthfi Indana
Published: June 2022

Preliminary study at Trenggalek Regency show that most of vocational graduates from multimedia department work as shopkeeper on the department stores or as a salesman/saleswoman. This fact realize us that the purpose of vocational high school is not achieved yet. The research aims to describe and present mismatching skills data among vocational graduates. This study is descriptive with quantitative approach which focuses on multimedia department. The data will gained from 2 public schools. This data is collected from students who graduate on 2017 school year in SMK Raya and three generation graduates from SMKN Jaya. The method that been used are documentation and interview from career center at each school. As a result from 279 vocational graduates on multimedia department, graduates who study in the suitable field is 9%, who continue their study in the different field 27%, who work on the appropiate field approximately 18%, who get their work in the different field around 38%, and 8% of graduates still in the waiting period. Finally, the conclusion is vocational graduates can’t fill yet the job market at suitable field. Therefore, role of all education stakeholder are needed to reduce mismatching skills between background of study and field of work.
Influence of Footing Size and Matric Suction on the Behavior of Shallow Foundations in Collapsible Soil
Authors: Vianna Ana P.F. , Cintra José C.A. , Aoki Nelson
Published: June 2022

This work analyses the influence of footing size and soil matric suction on the behavior of shallow foundations on unsaturated sandy soil, in terms of bearing capacity and settlements. Fourteen plate load tests were performed at the Experimental Site of USP/São Carlos. Rigid metal plates were used, with diameters varying between 0.20 m and 0.80 m and reinforced concrete footings, with circular base diameter 1.50 m. All the plates and the footings were installed at a depth of 1.5 m. These tests were conducted either with matric suction monitoring using tensiometers installed at the bottom of the hole or with soil flooding. The important role of the matric suction was confirmed. A reduction of the matric suction close to zero causes a great decrease in the bearing capacity and a significant increase in the settlement. In relation to the footing size (B), the bearing capacity as well as the settlements did not present a constant linear increasing variation. This work also proved the importance of considering the soil collapsibility in unsaturated soil shallow foundations design. When this factor is not considered, the calculated allowable bearing capacity may cause very high settlements if soil flooding occurs.
Characterizing Protein Conformational Spaces using Efficient Data Reduction and Algebraic Topology
Authors: Joshi Arpita , Haspel Nurit , González Eduardo
Published: June 2022

Datasets representing the conformational landscapes of protein structures are high-dimensional and hence present computational challenges. Efficient and effective dimensionality reduction of these datasets is therefore paramount to our ability to analyze the conformational landscapes of proteins and extract important information regarding protein folding, conformational changes, and binding. Representing the structures with fewer attributes that capture the most variance in the data makes for a quicker and more precise analysis of these structures. In this study, we make use of dimensionality reduction methods for reducing the number of instances and for feature reduction. The reduced dataset that is obtained is then subjected to topological and quantitative analysis. In this step, we perform hierarchical clustering to obtain different sets of conformation clusters that may correspond to intermediate structures. The structures represented by these conformations are then analyzed by studying their high-dimensional topological properties to identify truly distinct conformations and holes in the conformational space that may represent high energy barriers. Our results show that the clusters closely follow known experimental results about intermediate structures as well as binding and folding events. Doi: 10.28991/HEF-SP2022-01-01 Full Text: PDF
PEMANFAATAN LIMBAH KULIT JERUK MANIS SEBAGAI PEKTIN DENGAN METODE EKSTRAKSI
Authors: Tambunan Anugrah Yunika , Azhari Azhari , Dewi Rozanna , ZA Nasrul , Mulyawan Rizka
Published: June 2022

Pektin merupakan salah satu kelompok karbohidrat yang larut dalam air yang terdapat pada dinding sel dan jaringan interseluler tanaman tertentu. Dalam penelitian ini bahan dasar yang digunakan dalam pembuatan pektin adalah kulit buah jeruk manis (Citrus Cinensis). Proses pembuatan pektin yang digunakan adalah proses ekstraksi padat cair, yaitu salah satu proses pembuatan pektin dengan proses transfer difusi komponen terlarut dari padatan inert kedalam pelarutnya atau dipakai untuk memisahkan analit yang ada di padatan  menggunakan pelarut organik. Adapun tujuan dari penelitian ini adalah untuk menghasilkan pektin dari limbah kulit buah jeruk manis. Sampel kulit jeruk manis 10 gr diekstraksi dengan menggunakan pelarut HCl dan pencucian pektin dengan etanol. Konsentrasi etanol yang digunakan adalah (0,06, 0,08, dan 0,1N) dengan suhu ekstraksi 60°C, 70°C. Serta 80°C. Hasil terbaik dengan kondisi optimum pada penelitian proses pembuatan pektin dari limbah kulit buah jeruk manis secara ekstraksi adalah pada konsentrasi 0,1 N dan suhu 80°C diperoleh rendemen 31,81 %, kadar air 1,80%, kadar metoksil 10,39% dan kadar galakturonat sebesar 86,24%..
Encapuchados juveniles (anarcos y feministas): crucigrama para la comunicación política de AMLO
Authors: Sánchez-Gudiño Hugo
Published: June 2022

El presente artículo es producto de una revisión documental cuyo objetivo consistió en: elaborar un balance crítico de la Estrategia de Comunicación Política del Presidente mexicano Andrés Manuel López Obrador(AMLO) frente a los colectivos Encapuchados autodenominados Anarcos y Feministas Separatistas que demandaban el cese a la violencia en contra de las Mujeres y un alto al Feminicidio. Se aplicó un planteamiento teórico –metodológico enfocado en 3 líneas de acción: la Sociedad Red, los Movimientos Sociales y la Política Pop. El método utilizado no se circunscribió únicamente en la revisión y análisis documental del Movimiento de Protesta Juvenil frente al Gobierno federal, sino que además se recurrió a técnicas etnográficas como el estudio directo de las activistas y grupos sociales, así como entrevistas personales y la observación participante con los actores políticos centrales de la protesta en esta investigación de tipo cualitativa. Se encontró que los Colectivos Encapuchados Anarcos y Feministas vulneraron y debilitaron las Narrativas Mediáticas de la 4T, así como la figura presidencial con cientos de consignas en las redes sociales y en las calles que exigían al gobierno federal igualdad y justicia para las mujeres asesinadas, desaparecidas, y todos los casos de violencia de género que han quedado impunes.Por lo que se concluye que este vertiginoso movimiento de las Encapuchadas y sus banderas de lucha se han convertido en un crucigrama difícil de resolver para el gobierno que encabeza López Obrador.
Crisis económica y Estado de bienestar, estudio exploratorio en Cádiz, España
Authors: Oñate-Tenorio Antonio , Muñoz-Sánchez Práxedes
Published: June 2022

El presente artículo es una revisión de la literatura existente y el análisis de los datos obtenidos en un estudio piloto cuyo objetivo principal es la búsqueda de la asociación entre crisis económica y Estado de bienestar. Se estudia el entroncamiento de la crisis en categorías como ciudadanía, resiliencia, transformaciones sociales, movimientos y grupos sociales, y su indagación en sectores de la salud, socio-comunitarios y en ciudadanía en general. El principal motivo de la investigación son las consecuencias de la recesión económica de los años 2008/09, que ha pasado a la historia económica mundial por su intensidad y por ser la primera crisis económica verdaderamente global. A partir de la investigación teórica se precisa de una metodología cualitativa para analizar sus discursos sobre la relación existente entre crisis económica y Estado de bienestar. La investigación concluye que la crisis económica no fue la causa, sino la excusa para justificar la crisis del Estado de bienestar, y enfrenta desafíos de índole político que cuestionan su razón de ser en eficacia y legitimidad.
SISTEMA CONSTRUTIVO LIGHT STEEL FRAMING: AVALIAÇÃO DO DESEMPENHO DE PLACAS DE MADEIRA RECONSTITUÍDA
Authors: Carrasco Edgar Vladimiro Mantilla , Rezende Janaina Costa , Rodrigues Francisco Carlos , Marques Júlio Cezar Silva , Mantilla Judy Norka Rodo
Published: June 2022

Levando em conta as ações transversais do sistema construtivo Light Steel Framing (LSF), o desempenho estrutural depende do comportamento ao cisalhamento das chapas de fechamento das paredes, em função dos módulos de elasticidade e de deformação transversal, entre outros fatores. Assim, o objetivo deste trabalho foi determinar o módulo de elasticidade nas direções longitudinal e transversal, das chapas de fechamento em compensado estrutural, por meio de ensaios à flexão estática em três pontos, nos quais foram seguidas as prescrições da NBR 9533 (ABNT, 2012), e compará-lo com resultados de pesquisas similares que usaram chapas Oriented Strand Board (OSB) no contraventamento do sistema LSF. Após análise dos resultados dos valores obtidos dos módulos de elasticidade em pesquisas que foram utilizadas chapas de OSB, e comparados com os resultados da presente pesquisa concluiu-se que é possível utilizar o compensado estrutural no sistema construtivo LSF destacando-se inclusive um desempenho superior.
DESIGN ORIENTADO À INTERCULTURALIDADE COMO FERRAMENTA PARA A SUSTENTABILIDADE CULTURAL
Authors: Pozzer Christiano Hagemann , Jacques Jocelise Jacques , Ribeiro Vinícius Gadis
Published: June 2022

O presente artigo propõe uma análise teórica nos temas sustentabilidade cultural e interculturalidade na prática de projeto do design. Sua abordagem tem início ao questionar se o design com orientação intercultural, quando realizado de maneira consciente do caráter sistêmico do desenvolvimento sustentável, poderia se configurar em uma ferramenta junto às políticas de sustentabilidade cultural. Para tal, tem-se como objetivo definir e explorar o conceito de sustentabilidade cultural e sua relação com o desenvolvimento sustentável, descrever os princípios do design com orientação intercultural e investigar suas alternativas praxiológicas. Por fim, é proposto um modelo teórico de análise onde paradigmas do design orientados à interculturalidade podem se inserir na dinâmica da sustentabilidade cultural. Dessa forma, este trabalho pretende contribuir aos estudos críticos do design e estimular comportamentos orientados para a cultura da sustentabilidade.
TEXTILE WASTE REVALUATION SYSTEM: FROM DESIGN TO IMPLEMENTATION
Authors: Massi Fernanda De Oliveira , Graciano Bheatriz Silvano , Da Silva Guimel Macedo , De Sampaio Claudio Pereira , Martins Suzana Barreto
Published: June 2022

Este artigo descreve e discute o processo de planejamento e o estágio atual da implementação de um sistema de revalorização de resíduos têxteis pós-consumo e industriais em uma cooperativa de catadores da cidade de Londrina, denominado Banco de Resíduos Têxteis (BRT). Este sistema representa uma nova oportunidade de negócio para a cooperativa, buscando criar postos de trabalho e renda para os catadores cuja situação econômico-financeira tem sido agravada pela pandemia de Covid19 que afeta o Brasil e o mundo. As bases teórico-metodológicas deste estudo incluem o Design de Sistemas, Design para a Sustentabilidade, Economia Circular e Distribuída, entre outras, e a metodologia de pesquisa baseia-se na Pesquisa-Ação em Design, complementada com outros métodos auxiliares. Os resultados iniciais incluem a definição do modelo de operação do BRT, do fluxo de produção, desenvolvimento de produtos e aquisição de equipamentos que serão instalados na cooperativa para processamento dos resíduos têxteis, além da articulação com uma empresa parceira para fornecimento inicial de materiais para testes de produção.
TRAINING DESIGN STUDENTS TO BUILD A BETTER FUTURE
Authors: Gallindo Viviane Magalhães , Silva Arlindo , Abinaya N
Published: June 2022

Até o momento, durante a evolução humana, nós (humanos) temos ido contra a natureza em vez de nos adaptar e evoluir com ela e, neste aspecto, o surto de Covid-19 tem sido uma experiência humi- lhante. Muitas das chamadas soluções são concebidas sem considerar ou avaliar as consequências negativas que todos enfrentamos hoje e que vão piorar com o tempo se não forem feitas alterações. Afirmamos que os designers têm a responsabilidade de intensificar a evolução humana como nosso papel neste reino material (Margolin, 2002). Para isso, propomos o conceito de um jogo de simulação (Second Planet) que visa moldar as ações dos alunos de design em direção a soluções que irão melhorar a evolução humana. Como uma simulação, os alunos seriam capazes de prototipar, testar e implementar suas soluções no Segundo Planeta, onde as consequências de suas soluções poderiam ser analisadas a partir de dimensões sociais, ambientais e éticas sem causar danos no mundo real. Uma ferramenta para promover uma mudança de comportamento do aluno face à implementação da responsabilidade social no Design.
Penerbangan otomatis pesawat tanpa awak sayap tetap menggunakan flight controller berbasis iNav
Authors: Akbar Auriza Rahmad , Imron Ali
Published: June 2022

Pesawat tanpa awak (UAV) dapat dikendalikan secara manual dengan remote control atau secara otomatis dengan flight controller (FC). Sangat sedikit penelitian yang membahas konfigurasi penerbangan otomatis UAV sayap tetap dengan memakai firmware iNav. Oleh karena itu, penelitian ini bertujuan untuk melakukan penerbangan otomatis pada UAV jenis sayap tetap dengan iNav. UAV yang digunakan adalah model SkySurfer X8 dengan bentang sayap 1.40 m. FC yang digunakan adalah Matek F405-Wing. Metode penelitian ini terdiri atas lima tahap: perakitan, konfigurasi, pengujian, pengambilan dan pemrosesan data, dan analisis data. Berdasarkan hasil uji terbang, UAV berhasil terbang secara otomatis mengikuti skenario yang diberikan. Skenario terpanjang berupa persegi berukuran 600×600 m pada ketinggian 100 m, yang ditempuh dalam waktu sekitar 2 menit dengan kecepatan sekitar 65 km/jam. Hasil dari penelitian ini berupa prosedur perakitan, konfigurasi, operasi, dan hasil data uji terbang diharapkan dapat menjadi acuan dalam penelitian UAV sayap tetap menggunakan iNav.
Analisis Pembelajaran Daring dan Kemampuan Literasi Sains Biologi serta Berpikir Kritis Siswa di SMA Negeri 1 Woha pada Masa Pandemi Covid-19
Authors: Putri Riana Meilya , Setiadi Dadi , Mahrus Mahrus , Jamaluddin Jamaluddin
Published: June 2022

Literasi sains dan berpikir kritis merupakan aspek penting yang bisa dijadikan bekal bagi generasi jaman sekarang yang harus dimiliki untuk menghadapi tantangan masa kini dan masa depan. Tujuan penelitian ini adalah untuk mengetahui pelaksanaan pembelajaran daring serta kemampuan literasi sains biologi dan berpikir kritis siswa di SMA Negeri 1 Woha pada masa pandemi covid-19. Metode penelitian yang digunakan adalah deskriptif. Populasi penelitian adalah seluruh siswa kelas XI SMA Negeri 1 Woha. Sampel penelitian sebanyak 49 orang siswa yang berada di kelas XI IPA 1 dan XI IPA 2. Instrumen yang digunakan adalah lembar pedoman wawancara dan soal tes literasi sains biologi serta berpikir kritis. Hasil penelitian menunjukkan bahwa pandemi covid-19 memengaruhi proses pembelajaran. Beberapa faktor pendukung guru dalam melaksanakan pembelajaran yaitu ketersediaan media pembelajaran dan kuota serta jaringan yang stabil di sekolah. Faktor penghambat adalah jaringan yang dimiliki oleh peserta didik di rumah masing-masing serta adanya peserta didik yang masih belum memiliki laptop untuk menunjang pembelajaran. Nilai kemampuan literasi sains biologi peserta didik adalah 49,79% dan nilai kemampuan berpikir kritis peserta didik adalah 55,23%. Berdasarkan hasil penelitian dapat disimpulkan bahwa kemampuan literasi sains biologi dan berpikir kritis di SMA Negeri 1 Woha dikategorikan rendah. Rendahnya kemampuan literasi sains biologi dan berpikir kritis ini dipengaruhi oleh beberapa faktor yaitu minat membaca yang masih rendah, alat evaluasi yang belum mengarah pada pengembangan literasi sains biologi, kurangnya minat belajar siswa dan pengetahuan siswa yang masih terpotong-potong sehingga siswa sulit untuk mengaitkan konsep yang satu dengan yang lainnya.
Spectrophotometric evaluation of effects of heavy metals on human erythrocytes.
Authors: Khawar Anwar  , Muhammad Usman Anjum  , Muhammad Adnan Sadiq  , Erum Bashir  , Khawaja Shakeel Ghani
Published: June 2022

Objective: To study the effect of heavy metals on the human erythrocytes. Study Design: Experimental Study. Setting: Department of Chemistry Hazara University, Mansehra. Period: January 2017 to June 2017. Material & Methods: Erythrocytes were isolated and prepared by the standard method from blood samples. The standard absorption spectra were recorded in the range of 200-800nm using double‐beam UV‐visible spectrophotometer. Heavy metals were prepared in laboratory as per given protocol. Erythrocyte samples were treated with prepared metals. Absorbance of these samples was recorded. The spectrum of these treated samples was compared with the standard spectra of erythrocytes to look for any variations that might have occurred. Results: It was observed that human erythrocytes exhibited altered behavior with each metal which was evident by shifting in peaks in UV/Visible spectra. The absorption maxima changed from higher to lower wavelengths with every metal tested. It was also observed that this change was more pronounced in case of Lead, Cadmium and Mercury while similar changes were also observed with Arsenic and Selenium. Conclusion: This study showed that erythrocytes exhibited different behavior with different metals as evident by the shift of peaks in UV/Visible spectra. The absorption maxima were shifted towards lower wavelengths suggesting that these metals do exert an effect on human erythrocytes.
Elementos para a História do Catolicismo Popular
Authors: Azzi Riolando
Published: June 2022

Estamos ainda em busca de uma exata conceituação do «catolicismo popular», expressão ampla, complexa e ainda não muito bem delimitada. Não é muito fácil, de fato, estabelecer os marcos divisórios entre o que é o catolicismo oficial e o popular, entre o que ainda é catolicismo ou já simplesmente sincretismo religioso...
Condicionamentos sociais do Catolicismo Popular
Authors: Rolim Francisco C.
Published: June 2022

Com este título — Condicionamentos sociais do Catolicismo Popular — temos diante de nós um tema aparentemente claro, que à primeira vista pode parecer sem discussão. Ninguém nega, por exemplo, que o fenômeno religioso, qualquer que ele seja, necessita de tais e quais condições para que ocorra em determinado tempo, se realize por determinados agentes, através de determinados meios. Diríamos que o catolicismo popular, como fenômeno de caráter religioso, transcorre em determinado espaço sócio-geográfico, mais ou menos densamente povoado, onde seus praticantes se movem e se intercomunicam...
Psicologia social e Catolicismo Popular
Authors: Valle Edênio
Published: June 2022

Apesar da grande abertura evidenciada pela Teologia contemporânea em relação às ciências que se ocupam do homem e da sociedade, não é particularmente cômoda a posição do psicólogo que deve falar sobre o catolicismo popular a um público altamente especializado em Teologia...
Upaya Meningkatkan Kualitas Profesionalisme Guru di Masa Pandemi: Pelatihan Penelitian Tindakan
Authors: Sriyanto Sriyanto , Febrianta Yudha , Yuwono Pratik Hari , Murniawaty Indri
Published: June 2022

The development of the teaching profession during the pandemic declined, because limited interaction and mobility made some teachers reluctant to innovate and be creative in learning. The purpose of this activity is to improve the quality of teacher professionalism through Classroom Action Research training. The methods used are discussions, lectures, and practice of proposal preparation, implementation, and preparation of reports and articles in journals. The result of this service is that the teacher has an understanding of Classroom Action Research after attending the training, can determine problems based on the results of learning reflections, prepare proposals, compile reports and articles in journals.
Unlocking the Full Potential of NMR Using Machine Learning: A Case Study of a Gas Field With an Oil Problem
Authors:   Petro-Innovations, Cuddy Steve
Published: June 2022

This paper describes the application of machine-learning techniques for unlocking the full potential of nuclear magnetic resonance (NMR), using a case study from the Seven Heads gas field. This field has long been recognized but was not developed due to a variety of technical challenges, including the thin-bedded nature of the sediments and the presence of both mobile and immobile viscous residual oil. The oil is a highly viscous liquid which, if produced, could block production tubing due to the shallow depth of the reservoir and associated low pressures. To produce dry gas successfully, identification of both oil and gas zones was necessary to enable gas zones to be perforated and oil zones to be excluded. During the development drilling campaign, the reservoir was appraised using a formation evaluation program specifically designed to address the presence of oil within the thinly bedded reservoir. In conjunction with core data and high-resolution electric logs, NMR logs were used to identify and avoid perforating zones with higher oil saturations. Formation fluid types were derived from the NMR using a pattern recognition technique that analyzes the entire shape of the T1 and T2 distributions to derive the volumes of gas, oil, and water. This machine-learning technique was calibrated using Dean and Stark fluid analysis data and enabled the prediction of continuous water, gas, and oil saturation curves. The results were used to ensure that the perforation strategy avoided oil-bearing sands. This paper describes how the NMR, together with machine learning, has enabled a complex tight gas field to be developed.
Formation Evaluation Using NMR, Mud Gas, and Triple-Combo Data – A Norwegian Logging-While-Drilling Case History
Authors:   Baker Hughes, Thern Holger , Kotwicki Artur ,   Aker BP, Ritzmann Nicklas ,   Baker Hughes, Petersen Jon ,   Baker Hughes, Mohnke Oliver ,   Baker Hughes
Published: June 2022

The presence of gas in hydrocarbon reservoirs has a distinct effect on commonly used porosity logging measurements such as density, neutron, and nuclear magnetic resonance (NMR). Although the effect of gas on NMR measurements is well understood, it remains difficult to estimate true formation porosity and hydrocarbon (HC) saturation exclusively from NMR data in gas-bearing formations. The hydrogen index (HI) of gas is much smaller than one and causes an underestimation of the measured NMR porosity. Unless temperature, pressure, HC composition, and saturation in the volume sensed by NMR are known accurately, compensating for the effect of gas is not easily accomplished. This paper compares different approaches for NMR gas zone analysis, and it introduces a new method integrating NMR logging data with a HI curve derived from mud gas surface logging. The results are connected to a full and consistent petrophysical reservoir description. Data and results from two wells drilled in a North Sea clastic reservoir are presented. The reservoir is dominated by thick units of sandstone, deposited in a submarine turbidite fan, with high porosity and high permeability. The wells were logged with triple-combo (i.e., gamma ray, density, neutron, and resistivity), NMR, and formation tester (FT) tools while drilling across gas, oil, and water intervals. Basic mud gas data are available from surface logging. Uncorrected NMR porosity shows an average porosity underestimation of 6 p.u. in the gas zone compared to triple-combo computer-processed interpretation (CPI) processing. The standalone evaluation of NMR data by a T2 cutoff approach and dual wait-time (DTW) data processing reduces the average porosity mismatch but results in zones of under- and overcorrection of the gas effect. Combining NMR DTW data with density improves the results and reduces the average porosity mismatch to less than 2 p.u. Compositional information from the mud gas data validates an inferred trend of fluid property variation in gas and oil zones across the reservoir and is used to derive a continuous HI log for further improving porosity and gas saturation estimation. Complementary to the results of the integrated data evaluation, we show independent results from mud gas data evaluation using a recently implemented method that provides independent porosity, permeability, and saturation indexes. Adverse conditions for the different approaches, including invasion, variations in mineralogy, and the limited vertical resolution of mud gas data, are discussed. Finally, the benefits and potential of combining NMR, mud gas, and triple-combo data are summarized.