bluuebunny/crossref_metadata_2025_split huggingface dataset:
VARIÁVEIS HIDRODINÂMICAS E SEDIMENTOLÓGICAS NO BAIXO CURSO DO RIO CABAÇAL EM CÁCERES – MT
Authors: Paula Willian Cosme da Silveira de , Cunha Sandra Baptista da , Souza Célia Alves de 
Published: May 2022

A presente pesquisa foi realizada no baixo curso do rio Cabaçal afluente do rio Paraguai com o objetivo de avaliar as variáveis hidrodinâmicas e sedimentológicas. No trabalho de gabinete foi realizado um levantamento bibliográfico e definidas as seções de coleta no canal de pose dos dados de campo foi realizado os cálculos de área da seção, vazão, descarga sólida suspensa e correlação das variáveis hidrodinâmicas e sedimentológicas. No trabalho de campo foi mensurada a profundidade com auxílio de um sonar Garmin, a largura do canal foi coletada com fita métrica, a velocidade foi adquirida com molinete fluviométrico, os sedimentos de fundo foram coletados com uma draga do tipo amostrador de mandíbulas e os sedimentos suspensos foram adquiridos com uma garrafa de Van Dorn. As fotografias aéreas foram adquiridas com um drone Dji Mavic Air Fly More. Em laboratório foi realizada a análise granulométrica dispersão total e o método de peneiramento, a matéria orgânica foi adquirida pelo meio de calcinação e os sedimentos suspensos foram realizados pelo método de evaporação. Na área de estudo a velocidade variou entre 0,5 a 1,56 m/s-1 no período de estiagem e 2,01 a 2,51 m/s-1 no período de cheia, a vazão na área da seção variou entre 39.65 a 223,84 no período de estiagem e 206.21 a 501.70 m³/s-1 no período de cheia, a descarga sólida suspensa variou de 253,50 a 1.585,86 ton/dia na estiagem e 1.787,84 a 5.947,34 ton/dia na cheia. Nos sedimentos de fundo predominou areia fina, variou entre 52.5% a 88.85% no período de cheia e 46.25% a 64.15% no período de estiagem.
O USO DO “FORTALEZA EM MAPAS” COMO FERRAMENTA GEOTECNOLÓGICA NO ENSINO DE GEOGRAFIA: UMA PROPOSTA METODOLÓGICA
Authors: Nunes da Silva Thaís Helena , Araújo Bruna Gabriele De Oliveira Araújo , Da Cruz Maria Lúcia Brito 
Published: May 2022

É fundamental compreender que os avanços tecnológicos hoje se inserem na educação, como o exemplo das geotecnologias. Mediante as aulas de Geografia no contexto do ensino de Cartografia a utilização das geotecnologias, pode representar uma ferramenta que auxilia o discente a observar e entender conceitos como: espaço, paisagem, lugar, região, escalas ou conhecer lugares geograficamente distante, assim, propiciando novas experiências. Contudo, é fundamental que os professores tenham o conhecimento sobre os diferentes tipos de geotecnologias. Dessa forma, o estudo proposto mostra o site “Fortaleza em Mapas” como ferramenta pedagógica para os alunos de escolas no município de Fortaleza. Em decorrência do momento atípico vivenciado em todo o mundo de COVID-19, é fundamental destacar que o trabalho é uma proposta metodológica. Hoje ao trabalhar metodologias alternativas do ensino de Geografia é importante ser atrelado às competências e habilidades da BNCC, com o intuito de orientar a aprendizagem dos discentes. Práticas como esta são alicerçadas por meio da metodologia da pesquisa-ação, com a finalidade de vivenciar e analisar o objeto de estudo. Assim, o estudo pretende auxiliar docentes na construção de aulas mais dinâmicas e atrativas ao realizar a análise de diferentes bairros do município de Fortaleza. É evidenciado que a utilização de metodologias como essas podem proporcionar uma maior interação entre alunos na aula de Geografia. Sabemos o quanto é importante desmistificar a Geografia enquanto uma disciplina decorativa e mecânica em sala de aula. O site “Fortaleza em Mapas” propicia uma melhor compreensão por parte dos alunos, visto que, por se tratar de um local que faz parte do seu dia a dia, facilita a explicação e a compreensão. O intuito de utilizar essa ferramenta é propor debates em sala que promovam o desenvolvimento crítico dos alunos, além de fazê-los entender os principais aspectos de um mapa.
Blended learning or full online: Increase student mood and motivation during the new normal era
Authors: Aru Fantiro Frendy , Arifin Bustanol , Muzakki Abdurrohman , Setiawan Edi 
Published: May 2022

The purpose of this study is to improve students' mood state and motivation to learn through blended learning versus full online. This research is quantitative with the use of experimental methods. Participants in this study were students from University of Muhammadiyah Malang (n=42) who take physical education courses. The forty-two participants were allocated to the blended learning group (n=21) and full online group (n=21). The instruments in this study used the mood states and motivation questionnaire. The intervention program was carried out for four weeks with three weekly meetings. The raw data in this study will be analyzed using the SPSS application to find the mean and standard deviation, normality test, and homogeneity test. Independent sample t-test was used to test the difference in pre-test and post-test mood state scores and student motivation. The level of significance used in this study is 0.05. The study results found that there was a significant difference in effect between blended learning and full online and the data proved that blended learning had a better effect than full online. This research contributes to developing a learning system that can be used in the new normal era so that lecturers can create optimal lectures.
PENGARUH INFLASI, NILAI TUKAR DAN TINGKAT SUKU BUNGA TERHADAP INDEKS HARGA SAHAM GABUNGAN (Studi pada Bursa Efek Indonesia Periode 2015-2017)
Authors: Alvian Linda Amalia , Azari Chasan , Herman Herman 
Published: May 2022

This study aims to determine the effect of inflation, exchange rates (IDR/USD) and interest rates (BI Rate) on the Composite Stock Price Index (CSPI) in Indonesia Stock Exchange from 2015 to 2017. This study uses quantitative method. The data is monthly time series data, from 36 data from January 2015 to December 2017. The data analysis method is multiple linear regression analysis with a significant level of 0.05. The analysis shows that inflation, the exchange rate (IDR/USD) and the interest rate (BI Rate) have a strong relationship with the Composite Stock Price Index (CSPI). Simultaneously the variable inflation, exchange rate (IDR/USD) and interest rate (BI Rate) have an significant effect on the Composite Stock Price Index (CSPI). Partially the inflation variable, exchange rate (IDR/USD) and interest rate (BI Rate) have a negative effect on the Composite Stock Price Index (CSPI).
PEMBERDAYAAN MASYARAKAT KOTA DALAM MENSUKSESKAN ECO MASJID YANG BERKEADABAN
Authors: Arijulmanan Arijulmanan , Rosyid Abdul , Ja'far Budi , Komarudin Komarudin , Helmia Rizki , Husri Zainul 
Published: May 2022

Pemberdayaan masyarakat kota dalam mensukseskan eco masjid yang berkeadaban di kelurahan Curug Mekar Kecamatan Bogor Barat Kota Bogor dengan melakukan: sosialisasi pemahaman masyarakat tentang pentingnya belajar ilmu agama semenjak dini, pemahaman tentang pentingnya perilaku hidup bersih dan pemanfaatan Eco Masjid sangat menunjang bagi kesehatan warga masyarakat dan sekitarnya. Begitu juga pemahaman masyarakat tentang kesadaran dalam menggali sumber daya yang ada sesuai dengan keahlian mereka masing-masing dengan cara membuat usaha-usaha atau kegiatan baru yang bermanfaat dapat dilakukan di rumah masing-masing. Selain itu masyarakat semakin paham akan pentingnya penghijauan lingkungan dengan menanam pohon-pohon yang bermanfaat, sehingga menjadikan lingkungan yang sejuk, indah dan nyaman. Masjid yang berlokasi di Kelurahan Curug Mekar tidak hanya sebagai tempat ibadah mahdhah namun telah difungsikan sebagai pusat kegiatan eco masjid dan program pemberdayaan bagi warga sekitar mengingat mayoritas mereka komunitas muslim. Bentuk-bentuk program pendampingan antara lain: (1) Kegiatan Majelis Taklim, (2) Taman Pendidikan Al-Qur’an, (3) Pelatihan Manajemen Masjid, (4) Sosialisasi Eco Masjid, dan (5) Bakti sosial, dan lainnya. Dengan demikian, keberadaan masjid berfungsi sebagai sentral dan merupakan pusat aspirasi kaum muslimin. Masjid yang berlokasi di Kelurahan Curug Mekar, Kecamatan Bogor Barat melalui peran Dewan Kemakmuran Masjidnya telah mampu melaksanakan program eco masjid bagi jamaah masyarakat sekitarnya. Pemberdayaan masyarakat di Kelurahan Curug Mekar melalui program eco masjid telah melahirkan perubahan perilaku positif pada penerima manfaatnya dan berimplikasi pada meningkatnya pemahaman dan pengamalan eco masjid bagi warga Kelurahan Curug Mekar.
MENUJU SERTIPIKASI WAKAF TANAH BERBASIS SISTEM TEKNOLOGI DI KABUPATEN CIANJUR
Authors: Solihah Cucu , Abdulghani Tarmin 
Published: May 2022

Wakaf menjadi kegiatan filontropi Islam yang memiliki dimensi luas dan memberikan banyak manfaat bagi kesejahteraan kehidupan manusia. Guna mewujudkan manfaatnya perlu ditunjang dengan kekuatan hukum berupa sertifikat akta wakaf. Pengabdian masyarakat ini memberikan suatu inovasi yang memberikan kemudahan bagi masyarakat yang mewakafkan tanah hingga terbit sertifikat dengan teknologi sebagai sarananya. Metode pelaksanaan diawali dengan mengumpulkan data-data yang mendukung dan memudahkan pada saat pengembangan sistem, menganalisis permasalahan pada sistem (SIWAK), menemukan suatu desain sistem dan mengembangkan perangkat lunak sebagai alternatif sistem yang akan membantu masyarakat dalam mensertifikatkan wakaf tanah sekaligus merealisasikan kebijakan pemerintah terkait sertipikat berupa layanan PTSL (Pendaftara Tanah Sistematis Lengkap).
Shape Memory Alloy Actuated Vortex Generators: Alloy Design
Authors: Benafan O. , Gaydosh D.J. , Bigelow G.S. , Noebe R.D. , Calkins F.T. , Nicholson D.E. 
Published: May 2022

Abstract
Aerodynamic devices, such as vortex generators, are often used to reenergize flow and improve aerodynamic performance of aircraft control surfaces. Often the static, non-moving surfaces are designed for specific flight conditions and decrease performance, such as increasing drag and fuel consumption, at other conditions. One example is vortex generators (VGs), small vanes located throughout the aircraft surfaces. VGs are typically not required for the entire flight profile but are essential for conditions such as low speeds during take-off and landing. The static nature of standard VGs stems from the inability to adapt conventional actuators due to mass, complexity, or footprint constraints given their small size and placement on outer surfaces of the aircraft. Shape memory alloys (SMAs) present an opportunity to enable actuation of such devices with a minimal mass and dimension, while still providing high energy densities. Additionally, SMAs can be passively used as sensors if carefully "tuned" to respond to the altitude temperature differential and passively actuate without the need for heaters, active controls, or additional sensors and instrumentation. In this work, the authors report on the development of low temperature SMAs for passively actuating VGs based on temperature changes from ground to cruise altitudes.
Influence of Stress on the Transition Behaviour of NiTi Shape Memory Alloys for Actuator Applications
Authors: Eyer P. , Trauth A. , Weidenmann K. A. 
Published: May 2022

Abstract
Shape memory alloys (SMA) stand out due to the ability that they can be deformed and then return to their initial shape by heating. This process results in a high actuation energy density. All SMA manufacturing methods, regardless of which matrix material is used, result in heat input into the SMA, which could induce a phase transformation and therefore disable the actuator function. In this regard, options to increase the transition temperatures of NiTi alloys above the processing temperatures are fundamental. In this study, the influence of the pre-tension on the transformation temperatures of SMA wires was investigated as a way to prevent phase transformation due to heat impact during the production of SMA-polymer-actuators. Applying a pre-tension of 400 MPa to the NiTi wire, the austenite start temperature could be increased by a factor of 1.9 whereas it could be increased by a factor of 2.2 with a pre-tension of 550 MPa. Therefore, after preloading the wires, a phase transformation should not be induced when the wire contacts the polymer droplets. However, the shift of the phase transformation has to be further investigated.
Development and Mechanical Testing of Low Hysteresis Shape Memory Alloys
Authors: Montagnoli Andre , John Neha , Young Marcus L. , Tad Calkins F. , Nicholson Douglas E. 
Published: May 2022

Abstract
Shape memory alloys (SMAs) have gained attention in recent years as a powerful mechanism for mechanical actuation in space applications. One issue facing this technology is that most commercially available SMAs yield a high amount of energy loss due to their relatively large hysteresis, which can translate into an increase in the overall cost of the mission. Low hysteresis shape memory alloys (LHSMAs), which exhibit a much narrower hysteresis, are needed to minimize this energy loss. Previous studies have shown that elemental additions of Cu, Co, and Pd to the NiTi-based SMA can result in shape memory alloys with a much lower thermal hysteresis, due to better phase compatibility. This present work investigated seven alloy compositions to identify LHSMAs with less than 20 °C hysteresis and develop processing routes for these LHSMAs to determine potential candidates for space actuation applications.
Shape Memory Materials Database (SMMD): Finding Data Anomalies and Trends
Authors: Caltagirone P.E. , Benafan O. , Bostic S.A. 
Published: May 2022

Abstract
A comprehensive shape memory materials database (SMMD) repository is being developed that provides access to a large collection of information on shape memory materials (SMMs) in a single source. The collection of point data and metadata provides insight into actuation properties, structural performance, chemical data, processing records, and similar factors pertinent to shape memory alloys, polymers, and ceramics. The data is organized in a 2D and 3D visualization platform allowing users to gain immediate access to data insights and trends with only a few button clicks. All data points have full traceability to the original source to verify findings and create a link to researchers and scientists within the community. In addition to millions of datapoints already displayed, the web-application also offers access to analysis tools, references to international standards, and resources pertinent to the SMM community.
A New Constitutive Modeling Approach for Shape Memory Alloys
Authors: Landis Chad M. , Kyriakides Stelios , Jiang Dongjie 
Published: May 2022

Abstract
A new thermomechanical constitutive modeling approach for shape memory alloys (SMAs) that undergo a martensite to austenite phase transformation and the associated pseudoelastic and shape memory responses is presented. The novelty of this new formulation is that a single transformation surface is implemented in order to capture the forward and reverse phase transformations, as well as the reorientation and detwinning of the martensite phase. The framework is akin to the usual flow theory plasticity with kinematic hardening, however in addition to the transformation strain there is also a transformation entropy that is directly related to the martensite volume fraction appearing in prior theories. A transformation surface in effective stress and effective temperature space is introduced and an associated flow rule governs the evolution of the transformation strain and entropy. In order to capture the multitude of SMA behaviors, a transformation potential function is introduced in transformation strain and entropy space for the derivation of the back stresses and back temperatures that define the kinematic hardening behavior. It is this potential function that governs all of the important behaviors within the model. After the description of the general theory, specific forms for the transformation surface and the transformation potential are devised and results for the behaviors captured by the model are provided for a range of thermomechanical loadings. The model is then implemented in finite element calculations to investigate the structural response of shape memory alloy tubes, bars, and beams.
Combination of Solid and Porous Nitinol Implants in Surgical Treatment of Extensive Post-Excision Thoracic Defects in Cancer Patients
Authors: Topolnitskiy Evgeniy , Chekalkin Timofey , Marchenko Ekaterina , Yasenchuk Yuri , Kang Ji-hoon , Yahia L'Hocine 
Published: May 2022

Abstract
Radical surgical intervention for chest wall tumors is typically accompanied by the lesion of osteochondral structures and the appearance of complex post-resection defects, which result in functional and aesthetic impairment. After extensive resection of the chest wall, it is vitally important that it be simultaneously repaired, including restoring the osteochondral framework and the integrity of the integumentary tissues as well as maintaining the anatomical and physiological volume of the mediastinum and the pleural cavities. Porous and solid Nitinol implants and their successful deployment in surgical treatments have encouraged insights for immediate and delayed osteoplasty in cancer patients. The novel aspect of this work consists in this surgical method of post-excision defect repair is performed using a proprietary approach and customized NiTi-based implants. The results indicate that the suggested surgical approach and tactics using one-step repair are one of the promising techniques even though the case is aggravated with extensive chest wall lesions. The approach can be performed safely and can be recommended as a routine procedure with a high success rate. Combined Nitinol implants seem to be very good reinforcing biomaterials that enabled the reliable repair of thoracic post-excisional defects of various sizes with good functional, clinical, and cosmetic outcomes.
Nitinol Continuously Flat-Rolled Sheet and their Properties
Authors: Keck Andreas , Plaskonka-Weisenburger Katarzyna , Knoll Stefan , Ulmer Jochen , Pelton Alan 
Published: May 2022

Abstract
The continuous rolling of Nitinol alloys is a metalworking process with the ability to produce large quantities of sheet with uniform properties for the use in actuation applications in motion systems with cyclic loads. Great advantages of continuous rolling in comparison with other manufacturing methods are the cold work and heat treatment steps and their ability to influence the properties of the product and keep them in a very tight window over the width and the length of the process. Those tightly controlled properties are key-requirements to use the continuous rolled Nitinol material for subsequent automated processes like stamping in progressive dies or deep- drawing. It is also required for efficient reel-to-reel laser or EDM cutting. The primary objective of this work is to evaluate and obtain the properties of Nitinol continuously flat-rolled sheets and optimization of the process parameters by fatigue evaluation.
Comparative Analysis of Process-Induced Strain Glass States in Austenitic and Martensitic NiTi Shape Memory Alloy Plates
Authors: John Neha S. , Ashmore Bailey , Wall Michael T. , Wheeler Robert W. , Young Marcus L. , Giri Anit. K. 
Published: May 2022

Abstract
In this work, a new method of processing shape memory alloys was utilized to understand the effects of disrupting the martensitic long range order and forming amorphous nanodomains with martensitic short range order. Based on the obtained results, strain glass alloy states were analyzed and confirmed using various characterization methods to determine trends and compare two alloys, Ni49.5Ti50.5 and Ni50.8Ti49.2. For Ni49.5Ti50.5 a 33% thickness reduction was required to obtain a cold work-induced strain glass state, while for Ni50.8Ti49.2 a 24% reduction was required.
The Assessment of Physical and Mechanical Property Variability in a New Generation of Low Inclusion NiTi Alloy
Authors: Yin Weimin , Sczerzenie Frank , LaFond Rich 
Published: May 2022

Abstract
There is an increasing demand for high quality Nitinol medical devices and implants to accommodate to the rapid growth in the biomedical market. Extensive studies have confirmed the significant impact of micro-cleanliness of Nitinol on fatigue life. Ultra-clean Nitinol material is required for most critical medical applications such as cardiovascular and neurovascular devices for which integrity and durability are critical. This poses challenges for upstream manufacturers to consistently produce ultra-low inclusion Nitinol mill products. This work is a comprehensive to evaluate hot rolled bars and coils of a new commercial scale ultra-clean Nitinol alloy. The robustness of the alloy production process and stability of product properties was confirmed by examining a large number of mill products manufactured in different campaigns. Extensive characterization and multiple approaches of inclusion analysis demonstrated the consistent ultra-high cleanliness of the products.
Hot Forming of Nitinol: Fundamental Investigations and Applications
Authors: Zende Stefan , Pohler Moritz , Bittigkoffer Lucas , Feth Nils-Agne 
Published: May 2022

Abstract
Nitinol's thermomechanical properties are well studied and understood below the so-called martensite death (MD) temperature, above which martensite cannot be induced by mechanical stress: Even at high stresses Nitinol stays in the austenite phase. This paper presents tensile tests performed well above MD (&gt;150 °C) with Nitinol specimens laser cut from tube. The investigations show that Nitinol drastically changes its mechanical properties in this temperature range: The superelastic plateau shortens and finally vanishes. Furthermore, Nitinol starts becoming more ductile.
SHAPE: Shape Memory Alloys via Halide-Activated Pack Eqilibration
Authors: King Andrew S. , Lipke David W. , Dempsey Ryan D. , Lipke David W. 
Published: May 2022

Abstract
Achieving stringent chemistry standards is necessary for additive manufacturing of Nitinol shape memory alloys. This work describes an elevated temperature gas-solid reaction processing technique that can be used to precisely regulate the chemistry and phase transformation behaviors of Nitinol components. The technique, Shape memory alloys via Halide-Activated Pack Equilibration (SHAPE), employs established principles of chemical vapor transport to equilibrate a substrate against reactive pack mixtures designed to regulate the chemical potentials of nickel and titanium in accordance with Gibbs' phase rule as means to precisely control substrate phase and elemental composition. The results suggest that SHAPE may find crosscutting potential especially when paired with additive manufacturing or fusion welding of Nitinol to improve product quality. Notwithstanding future applications, SHAPE is limited by solid-state diffusion that, in turn, limits the practical thickness of suitable components to about 1 mm. Opportunities for continued development have been identified for application to other compositions, and to further refine microstructure control.
Surface Characterization and Corrosion Resistance of Generation I-III Nitinol with Various Surface Finishes
Authors: Pipes Robert M. , Nagaraja Srinidhi , Pelton Alan R. , Hempel Philipp , Yazici Adna , Siddiqui Danyal 
Published: May 2022

Abstract
Although improvements in fatigue performance with increasing Nitinol microstructural purity have been previously characterized, there is limited information on whether corrosion resistance is impacted by reductions in inclusion size and distribution. The objective of this study is to characterize the surface oxide for different Nitinol microstructural purities and determine its influence on corrosion susceptibility. To assess the surface oxide, X-ray photoelectron spectroscopy (XPS) and electrochemical impedance spectroscopy (EIS) were performed on Nitinol heart valve frames with a variety of purities and surface finishes.