bluuebunny/crossref_metadata_2025 huggingface dataset:
Evaluation of Delamination Area of Composite Materials Based on Multiscale Features of Ultrasonic Lamb Waves and Neural Network
Authors: Zhang Penghui , Wu Hui , Ma Shiwei , Huang Kaihua
Published: August 2024

To address the problem of quantitative analysis for delamination damage in composite materials, a method of evaluating delamination area based on Lamb waves multiscale features is proposed. In this method, the Lamb wave scattering signals are collected from composite plate with delamination defects using finite element simulation, and the multiscale feature vectors of time-frequency domain are extracted by using complete ensemble empirical mode decomposition with adaptive noise algorithm. In addition, the delamination area can be evaluated and predicted through a generalized regression neural network by taking advantage of nonlinear mapping capability. The hyperparameters of the neural network are also optimized using genetic algorithm, and the feature vectors calculated at different scales are assigned to the network for training and verification. The results show that the multiscale features of delamination damage are more accurate and stable for the model. The mean value and the mean square deviation of mean absolute percentage error proposed in this study is 13.35 % and 4.35 %, respectively, indicating that the overall performance is better than using single scale features and traditional signal decomposition methods.
Aging-Related Cooling Performance Evaluation and Fabrication Conditions Optimization for Alkane-Based Phase Change Microcapsule-Modified Asphalt
Authors: Tang Yunhong , Wu Chaofan , Wang Xiaodong , Zhang Henglong , Chen Zihao , Yang Xue
Published: August 2024

Phase change microcapsules (PCMCs) have been developed as asphalt binder additives that can lower the peak road temperatures or extend the time it takes to reach the peak temperatures in hot summer times. However, few studies pay much attention to the possible cooling performance decline of PCMC-modified asphalt (PCMA) caused by the degradation of PCMCs during asphalt binder preparation and service processes. In this research, one type of PCMC with a phase change point of 37°C was chosen for the preparation of PCMA. The impact of PCMCs on performance grade, storage stability and cooling effects of PCMA was evaluated. The degradation of PCMCs in asphalt binder after thin-film oven tests and pressure aging vessel (PAV) aging tests was investigated from both perspectives of PCMCs and PCMA. Additionally, the optimal design and preparation conditions for PCMA were discussed based on the cooling efficiency. The results demonstrate that the introduction of PCMCs can endow asphalt with better cooling performance while not causing adverse effects on binder performance grade and storage stability. The results from morphology and enthalpy of PCMCs to rheological behavior and cooling performance of PCMA consistently illustrate the massive damage of PCMCs and cooling performance deterioration of PCMA caused by aging. Increasing the dosage of microcapsules and reducing the binder preparation temperature contribute to the sustainable cooling performance based on orthogonal experiment results.
Shaking Table Test on the Seismic Behavior of Fractured Rock Slopes with Dipping and Anti-dipping Layered Structures
Authors: Wang Tong , Liu Xian-feng , Yuan Sheng-yang , Hou Zhao-xu , Zhang Jun , Xu Jia-hang , Li Jian-guo , Jiang Guan-lu , Hu Jin-shan
Published: August 2024

Rock slopes with layered fractured structure are widely distributed in the mountainous areas of Southwest China. Under earthquake, these slopes are highly susceptible to disasters such as collapse, landslides, etc., adversely impacting the operation safety of transportation systems. This study aims to investigate the difference in seismic behaviors of two types of fractured rock slopes with typical dipping and anti-dipping layered structures. To do so, two sets of large-scale shaking table tests on the two typical fractured rock slopes were performed. The emphasis was made on the different failure mechanism of these slopes tested when subjected to four different seismic loadings with step-wise increase in amplitudes up to 0.7 g. We observed a three-stage destabilization process in both cases. For the dipping slope, the initial formation of microcracks and then their rapid development was followed by generation of terraced sliding surface through slope, whereas the formation of microcracks was followed by toppling of rock front until final collapse for the anti-dipping slope. Both slopes exhibit elevation amplification effects upon seismic loads as previously observed in other studies of similar slopes. The acceleration amplification effects near the bedrock interface and within slopes are more significant in the dipping case compared to the anti-dipping one. These effects are much enhanced at the top of slopes considered when the peak input acceleration exceeds 0.4 g. Further, Hilbert marginal spectrum analysis indicates that a sliding failure surface above the midslope was formed for the dipping slope, whereas the anti-dipping slope experienced more severe damages at the slope shoulder. The outcomes of this study are of important potential to assist the risk assessment and early warning of seismic hazards of fractured rock slopes.
As expressões idiomáticas no ensino de espanhol como língua estrangeira
Authors: Rios Tatiana Helena Carvalho
Published: August 2024

Neste trabalho consideramos alguns aspectos da teoria fraseológica e da Lingüística Aplicada para observar como as expressões idiomáticas são apresentadas no ensino de espanhol como língua estrangeira. Retomamos as competências propostas por Almeida Filho (1998) e Navarro (2005) e propomos ainda a competência idiomática, que seria o conhecimento das conotações lexicalizadas de uma língua estrangeira. Concluímos que, apesar dos avanços inquestionáveis das duas áreas e de suas contribuições para a integração dos idiomatismos e de outros tipos de unidades fraseológicas nos materiais didáticos e nas aulas de línguas estrangeiras, os estudos sobre esse tema ainda podem avançar e a questão tende a ser tratada de forma cada vez mais adequada.
O gênero entrevista pingue-pongue
Authors: Silva Nívea Rohling da
Published: August 2024

Temos por objetivo apresentar uma análise do gênero entrevista pinguepongue, do jornalismo de revista. Serão apresentadas as regularidades apreendidas a partir do estudo da dimensão social do gênero, a saber: (a) os horizontes temporal e espacial; (b) os participantes da interação discursiva; (c) o projeto discursivo do gênero. A partir desta pesquisa podemos definir o gênero entrevista pingue-pongue como discurso citado da entrevista face a face, ou seja, um enquadramento do discurso do entrevistado a partir de uma reenunciação da entrevista face a face. A fundamentação teóricomedotodológica insere-se na teoria de gêneros do discurso e da análise dialógica do discurso do Círculo de Bakhtin (ADD). Os dados de pesquisa são compostos pelas entrevistaspingue-pongues (totalizando 52 entrevistas) publicadas nas revistas semanais CartaCapital, ISTOÉ e Veja, no período de 4 de outubro a 8 de novembro de 2006, época de cobertura do segundo turno das eleições presidenciais no Brasil.
Gêneros textuais no ensino fundamental
Authors: Nascimento Erivaldo Pereira do
Published: August 2024

O presente trabalho se propõe a relatar e analisar uma experiência de formação continuada, fundamentada em sequência didática com gêneros textuais, para professores de Língua Portuguesa, do Ensino Fundamental, no Município de João Pessoa-PB. O projeto teve como embasamento a Teoria Enunciativo-Discursiva de Bakhtin (2000) e as orientações teóricas do grupo de Genebra (Bronckart (1999), Schneuwly (1994, 1997), Schneuwly e Dolz (2001, 2004). A experiência foi realizada durante todo o ano de 2008, atendendo a aproximadamente 150 professores da rede municipal, assistidos por 10 professores da UFPB, UEPB e CEFET-PB. O trabalho foi operacionalizado por meio de formação teórica, elaboração e análise de recursos didáticos como planos de aula e sequências didáticas por cada professor e sua devida aplicação em sala de aula. Neste trabalho, relatamos uma análise da experiência realizada, sobretudo das principais dificuldades apresentadas pelos professores em formação no trabalho com os gêneros textuais, na perspectiva adotada, utilizando como corpus os relatórios de acompanhamento dos professores formadores.
Surface ocean-lower atmospheric processes in the Indian Ocean: Current understanding, knowledge gaps, and future directions
Authors: Kumar Ashwini , Tegtmeier Susann , Fernandes Sheryl Oliveira , Biswas Haimanti , Girach Imran , Roxy M. K. , Kurian Siby , Marandino Christa A. , Sarma V. V. S. S. , Shenoy Damodar M.
Published: August 2024

Our understanding of surface ocean and lower atmosphere processes in the Indian Ocean (IO) region shows significant knowledge gaps mainly due to the paucity of observational studies. The IO basin is bordered by landmasses and an archipelago on 3 sides with more than one-quarter of the global population dwelling along these coastal regions. Therefore, interactions between dynamical and biogeochemical processes at the ocean–atmosphere interface and human activities are of particular importance here. Quantifying the impacts of changing oceanic and atmospheric processes on the marine biogeochemical cycle, atmospheric chemistry, ecosystems, and extreme events poses a great challenge. A comprehensive understanding of the links between major physical, chemical, and biogeochemical processes in this region is crucial for assessing and predicting local changes and large-scale impacts. The IO is one of the SOLAS (Surface Ocean-Lower Atmosphere Study) cross-cutting themes as summarized in its implementation strategy. This article attempts to compile new scientific results over the past decade focusing on SOLAS relevant processes within the IO. Key findings with respect to monsoon and air–sea interactions, oxygen minimum zones, ocean biogeochemistry, atmospheric composition, upper ocean ecosystem, and interactions between these components are discussed. Relevant knowledge gaps are highlighted, with a goal to assist the development of future IO research programs. Furthermore, we provided several recommendations to conduct interdisciplinary research to advance our understanding on the land–ocean–atmospheric interaction in the IO.
Mathematical representation ability of class VII students on ARIAS learning model viewed from self-renewal capacity
Authors: Ula Nurul Afifatul , Dewi Nuriana Rachmani
Published: August 2024

This study aims to describe: 1) The effectiveness of the ARIAS learning for mathematical representation ability; 2) The ability of mathematical representation viewed from Self-Renewal Capacity (SRC). The method used is mixed methods with a population of class VII students of SMP N 40 Semarang 2019/2020 school year. Samples were taken by random class technique, obtained VII C as an experimental class and VII B as a control class. Subjects were taken using the purposive sampling technique, and 9 subjects were selected based on the student’s SRC category. The methods of data collection using tests, questionnaires and interviews. The results showed that (1) ARIAS learning was effective against MRA; (2) Subjects with high SRC tend to meet all indicators of MRA; subjects with moderate SRC, S-04 and S-05 tend to meet all indicators of MRA, S-06 were less able to write down the steps for solving mathematical problems in words; Subjects with low SRC, S-07 was less able to create mathematical equations or models from the representations given and write down the steps for solving mathematical problems in words, S-08 and S-09 were unable to create mathematical equations or models from the representations given and write down the steps for solving mathematical problems in words.
Analyzing the Effect of Using the Geoboard for Learning the Pythagorean Theorem
Authors: Juárez-López José Antonio , Vázquez-Serrano David , Paternina-Borja Oscar , Ponce de León-Palacios Manuel
Published: August 2024

This research considered the need to implement didactic materials during learning the Pythagorean theorem as one of the topics present in mathematics curricula around the world. The objective was to analyze the effect of the use of the geoboard in the learning of the Pythagorean theorem with high school students. The contributions of the theory of figurative concepts and concrete didactic materials were considered. The method used was a case study design by applying a task with concrete material with ten students. Among the main results, the construction of figures on the geoboard was obtained by analyzing the students' mental images. It was also possible to demonstrate visual skills and reasoning development when implementing this material. In conclusion, the effect of use of the geoboard in the study of the Pythagorean theorem allowed the recognition of the difference in the unit of measurement between the legs and the hypotenuse. Also, the development of the skills allowed the students to build the concept of the relationship between the figures built within the square of the hypotenuse with the area of the squares corresponding to the legs.
Analysis of Students' Mathematical Problem Solving Ability Based on Learning Interest
Authors: Purba Novi Wulandari , Hasanah Rusi Ulfa
Published: August 2024

This research aimed to describe the ability to solve mathematical problems based on learning interests. The method used in this research was qualitative descriptive research. The research subjects were class X1 MIA 1 SMA Kartika 1-4 Pematang Siantar students. The selection of research subjects used a purposive sampling technique. The research instruments in this study were learning interest questionnaires, tests of mathematical problem solving abilities and interview guidelines. The data analysis technique used in this study was data reduction, data presentation, and drawing conclusions. The results show that subject student S30 with high learning interest can fulfill all indicators of mathematical problem solving abilities, including understanding problems, making solving plans, doing calculations, and re-checking the results obtained. Subject student S18 with moderate learning interest can fulfill the four indicators of problem solving ability, but the student is less able to plan problem solving, implement plans, and re-examine the results obtained. Subject student S2 with low learning interest can only meet the indicators of understanding the problem.
KEEFEKTIFAN MODEL PjBL DENGAN TUGAS CREATIVE MIND-MAP UNTUK MENINGKATKAN KONEKSI MATEMATIK SISWA
Authors: Ainurrizqiyah Zulfa , Mulyono Mulyono , Sutarto Hery
Published: August 2024

TujuanÂ  penelitian ini adalah untuk mengetahuiÂ  peningkatan kemampuan koneksi matematik, apakah terdapat perbedaan serta manakah yang lebih baik antara pembelajaran dengan model PjBL dengan tugas creative mind-map dan pembelajaran ekspositori pada siswa kelas X materi Trigonometri. Penelitian eksperimen yang dilakukan dengan pre and posttest control group design ini memiliki populasi yakni siswa kelas X SMAN 1 Sukorejo tahun ajaran 2014/2015. Dengan menggunakan cluster random sampling, terpilih sampel yaitu siswa kelas XB sebagai kelas kontrol dengan pembelajaran ekspositori dan XC sebagai kelas eksperimen dengan model PjBL dengan tugas creative mind-map. Data kemampuan koneksi matematik dianalisis menggunakan uji proporsi, uji beda rata-rata. Berdasarkan uji proporsi, diperoleh lebih dari 75 % siswa kelas eksperimen mencapai nilai ketuntasan belajar, yaitu 75. Selain itu, diperoleh adanya perbedaan hasil kemampuan koneksi matematik antar kedua kelas dimana kelas eksperimen lebih baik daripada siswa kelas kontrol. Sedangkan untuk peningkatan menggunakan uji t berpasangan dan gain ternormalisasi dengan hasilnya yaitu terdapat peningkatan kemampuan koneksi matematik pada kelas eksperimen dengan kriteria tinggi.
The Effectiveness of SSCS Learning Model with KNWS Strategy towards Mathematical Creative Thinking Ability and Self Confidence of Students
Authors: Warda Asa Kuntifatin , Mashuri Mashuri , Amidi Amidi
Published: August 2024

Type of this study is quantitative. The purpose of this study was to determine the effectiveness of SSCS learning model with KNWS strategy towards mathematical creative thinking ability and self confidence of students. The populations of this study was students at grade VIII SMP Muhammadiyah 8 Semarang academic year 2016/2017. The sampling was done by cluster random sampling technique, which were chosen VIIIA as experiment class and VIIIC as control class. Data collection methods used documentation, a test, a questionnaire, and an observation. The result of this study stated that the mathematical creative thinking ability of the experiment class students had reached the classical completeness, percentage of mastery learning on mathematical creative thinking ability of the experiment class students was better than that percentage of the control class students, average of test result on mathematical creative thinking ability of the experiment class students was better than that average of the control class students, average of self confidence score of the experiment class students was better than that average of the control class students, teacher ability and the learning activities at the experiment class students included in good category, response of the experiment class students to joint the learning is positive.
Problem solving ability of seventh grade students viewed from geometric thinking levels in search solve create share learning model
Authors: Wijayanti Kristina , Nikmah Aizzatun , Pujiastuti Emi
Published: August 2024

The purposes of this study was to know wether the studentâ€™s problem solving ability on SSCS and PBL learning models achive the mastery learning ; to compare the the studentâ€™s problem solving ability on SSCS  and PBL learning models; to describe the problem solving ability student on SSCS learning model viewed from geometry thinking levels, and to know the quality of SSCS learning models. The method used was a mixed method. The population of this study was all students of SMP N 10 Semarang. The sample was chooseb by simple random sampling technique  and class VII D as control class and VII G as experiment class.The quantitative data was analyzed by z-test to and the equivalence of two means.  The qualitative data was analyzed  through the validity test, data display, data reduction, and conclusion .  Results indicated that either SSCS and PBL learning models have achieve the mastery learning of poblem solving ability test but there was no difference between students' problem solving abilitiy in the  SSCS and PBL  learning models. Students with PreRecognition and Visual  canâ€™t fully identify the properties of figure so it makes difficulty in solving problem. Students with Analysis level solve  problem  using the properties of certain figures.
Mathematical communication ability of 7th grade students viewed from indonesian language ability in experiential learning model
Authors: Sari Intan , Suyitno Hardi
Published: August 2024

Communication ability need to be improved so that students can solve math problems well. This study aims to determine 1) the completeness of learning mathematics communication 7th grade students with experiential learning models; 2) the influence of Indonesian language ability on mathematical communication ability; 3) mathematical communication ability of students who have very high Indonesian language ability; 4) mathematical communication ability of students who have high Indonesian language ability; 5) mathematical communication ability of students who have medium Indonesian language ability. This study uses a combination method. The population in this study is 7th grade students in one of the junior high schools in the city of Semarang year 2018/2019. Sampling by random sampling technique and subject selection with purposive sampling technique. The results show that (1) mathematical communication ability of 7th grade students with experiential learning models can achieve learning completeness; (2) there is an influence of Indonesian language ability on students' mathematical communication ability in the experiential learning model; (3) students with very high Indonesian language ability have been able to reach all indicators of written communication ability; (4) students with high Indonesian language ability have been able to reach all indicators of written mathematical communication ability even though there are still errors in making conclusions; (5) students with medium Indonesian language ability are only able to master two indicator of written mathematical communication ability.
Studentâ€™s mathematical connection reviewed from learning motivation in Advance Organizer Learning assisted by Schoology
Authors: Pratama Rizky Sandy , Mulyono Mulyono
Published: August 2024

Abstract
The research aims to determine if advanced Organizer learning is effective with the ability of the studentâ€™s mathematical connection and describing the mathematical connection ability of students reviewed from the motivation to learn at Advanced Organizer Learning Assisted schoology. The research method used is mixed method with sequential explanatory design. The research population is class IX Junior High School 33 Semarang, while the sample is IX C class as the research class. Samples were taken using the random sampling cluster technique. Subjects of the study were taken using purposive sampling techniques, so obtained six research subjects were selected based on the category of motivational learning. Methods of collecting data using observations, tests, polls, and interviews. The results showed that (1) the proportion of the students ' mathematical connection ability to the study of Schoology advanced Organizer is achieving the classical, average mathematical connection ability of students in Advance Organizer learning With the help of schoology reaching the Minimum Submission Criteria (MSC), and the mathematical connection ability of students after receiving Advance Organizer learningassisted schoology increased by 0.8. The results showed that Advance Organizer learning assisted schoology effectively on the ability of student mathematical connection. (2) Subjects with high learning motivation tend to meet all mathematical connection indicators. Subjects with motivational learning are likely to meet two of the three mathematical connection indicators. Subjects with low learning motivation tend to meet one of three mathematical connection indicators.
Mathematical writing ability through Cooperative Learning with Think Talk Write (TTW)
Authors: Anisah Anisah , Asikin Mohammad , Hidayah Isti
Published: August 2024

The objectives of this research are to test the efectiveness of cooperative learning with TTW strategy on mathematical writing ability and to analyze mathematical writing ability of eighth grade students based on self-esteem on cooperative learning with TTW strategy. This research is a mix methode research. The population is eighth grade students of SMP Negeri 1 Jeruklegi Cilacap at the year of academic 2018/2019. The selection of quantitative samples uses cluster random sampling while the qualitative subjects uses purposive sampling. The results showed that cooperative learning with TTW strategy is effective on mathematical writing ability, and students with low self-esteem level generally have mathematical writing ability with low criteria on written text and drawing aspect and moderate on mathematical expression aspect, while students with high self-esteem level have mathematical writing ability with high criteria on all aspects.
The development of Augmented Reality-based learning media to improve studentsâ€™ ability to understand mathematics concept
Authors: Pujiastuti Heni , Haryadi Rudi , Arifin Alif Maulana
Published: August 2024

This research aims to develop an Augmented Reality-based learning media. This research is a type of development research. The development model used is the ADDIE model, which consists of five stages, namely, analysis, design, development, implementation, evaluation. The results of this study are in the form of cards that have been coded, Augmented Reality applications in Android, and student guide worksheets. The results of the validation of media and material experts indicate that this Augmented Reality-based learning media product is valid and feasible to use. The use of Augmented Reality based learning media in learning activities can improve students understanding of mathematical concept ability. This can be seen from the average n-gain obtained 0.61, which is included in the height category. Each indicator of the concept of understanding also shows big and medium improvement. This Augmented Reality based learning media also gets positive responses from students with an average percentage score of 87.50%.
Do quantum effects influence the energy of polariton states?
Authors: Avramenko Aleksandr
Published: August 2024

If an ensemble of molecules is placed inside a nano-scaled Fabry-Pérot cavity capable of trapping a photon resonant with a transition level of the molecule, the photonic and molecular (excitonic) states will exchange energy. If the exchange of energy between the two states is faster than the decay rate of either state, a pair of hybridized light-matter states known as polaritons may form. Polaritons involving a single photon and one type of molecular excitation can be modeled using a two-level Hamiltonian, with the eigenvalues of the matrix serving as the energies of the polariton states. At resonance, the separation between the two polariton states is referred to as the Rabi splitting, and is proportional to the square root of the concentration of the molecules involved in the coupling. In this manuscript data from previously reported cavity polariton measurements is analyzed, and it is found that while the relationship between the square root of the concentration and Rabi splitting holds for the overall energy difference between the polariton states, it is observed that this relationship does not hold for individual polariton energy levels. The basic particle in a box model and harmonic oscillator models of quantum mechanics are invoked in an attempt to qualitatively account for this discrepancy.
“Buffalo Soldiers . . . It’s Time to Refuse to Ride”
Authors: Schulze-Oechtering Castañeda Michael
Published: August 2024

This paper examines the multiracial coalition politics of Tyree Scott, one of Seattle’s preeminent Black radicals during the 1970s. A former construction contractor who became a community organizer in the late 1960s, Scott blossomed into one of the most vocal proponents of Third World solidarity in Seattle from the 1970s until his untimely death in 2003. By drawing on an archival collection of materials left by Scott including letters, reports, essays, and speeches, I unpack an analogue that he continually referenced throughout his long life as an activist: the “New Buffalo Soldier.” In Scott’s writings, he presented activists of color who neglected the plight of other aggrieved racial groups as yet another manifestation of Black soldiers who fought on the side of Manifest Destiny in the 1800s. To give further context to Scott’s analysis, this article pays particular attention to his interactions with Indigenous activists in the Pacific Northwest, as well as members of the International Indian Treaty Council (IITC). Moreover, it situates Scott’s analysis of past and present Buffalo Soldiers as a critical element of his local organizing, which, by the mid-1970s, sought to link struggles against institutionalized racism in the Seattle construction industry, the legal repression of local activists, and Third World decolonization. While critiques of settler colonialism remain an understudied aspect of the history of Black radicalism, this article shows that at least for Scott, political education around settler colonialism played a critical role in shaping a radical coalition politics.
Ethical Challenges in Contemporary Global Narratives
Authors: Charlot Vanessa
Published: August 2024

Reflecting on the contemporary luxury of truth, the author contemplates its elusive nature and occasional appearance during moments of introspection. Drawing parallels between the unassuming arrival of truth and the bold, impactful statements made in the face of adversity, the narrative weaves personal experiences—such as attending a conference and grappling with one's Haitian heritage—into a broader exploration of truth in the context of war, imperialism, and the role of photography. The author explores the challenges of encapsulating truth in photographs, especially amid the complexities of war, and highlights the historical role of images in visual imperialism, emphasizing the interconnectedness of histories like the ongoing genocide in Palestine and the imposition of occupation on Haitian land. The abstract concludes with a reflection on the transient nature of safety within the largest imperialist power and the collective responsibility to recognize dignity beyond geopolitical boundaries.
Tomorrow Never Came
Authors: Scott Jamaal
Published: August 2024

What is tomorrow? Cause for most of us tomorrow never came
Tomorrow comes for the news, but it’s the same sad story just a different name
You might not know this word cause tomorrow is a foreign concept when you’re Black
Especially when we lost so many loved ones after saying see you tomorrow, and they never came back
It ain’t no secret that we are under attack
But the crazy part is, it’s by the same system that’s supposed to have our back
The People’s Artist: In Loving Memory of Eugene Eda Wade, 1939–2021
Authors: Jeffery Hannah
Published: August 2024

When we think of the Black community mural movement in the United States, our minds typically think of Bill Walker in Chicago. But throughout the sixties and seventies and even into the eighties, another visionary artist was standing shoulder to shoulder with Walker, creating transformative art that brought joy, inspiration, and love into people’s lives across the nation. Eugene Eda Wade, the self-described “little old dirt-poor boy born in a shack” in Scotlandville, Louisiana, is an unforgettable artist. It became abundantly clear to me after just a few moments in his presence that Eda, as he was known to many, was brimming with monumental creativity and compassion, and he was an artist who had the clear purpose of devoting his life to making art for the people.
Hearing Timbre at the Crossroads
Authors: Morrison Landon
Published: August 2024

I recently taught a graduate music seminar titled “Timbre at the Crossroads,” which focused on how the idea of timbre has been constructed across disciplinary frames, in various times and places, by many different actors. A grounding premise was that timbre is best understood as a relational entity, a name placed on a set of sonic parameters, the bounds of which lack clear consensus and are constantly being negotiated. Listening in multiple directions, we engaged with a wealth of cross-disciplinary scholarship that has come to define the contemporary field of timbre studies, including sources from music theory, (ethno)musicology, composition, psychoacoustics, history, linguistics, sociology, and science and technology studies. Likewise, we moved freely between time scales, making macro-historical connections between eighteenth-century organological treatises and twenty-first-century assisted-orchestration software, while also tuning into the micro-temporal aspects of timbre as a multidimensional aspect of sound and musical expression. This broad spectrum of methodologies revealed the extent to which timbre is entangled with a vast range of epistemic instruments, cultural practices, and listening techniques, yielding numerous, often incongruent, answers to even the most basic of questions: what is timbre? Against this backdrop, Nina Sun Eidsheim’s book The Race of Sound: Listening, Timbre, and Vocality in African American Music (2019) makes a significant contribution to timbre studies by undertaking a critical examination of timbre, race, and identity.
Checking in with the CENFAD Emerging Scholar
Authors: Johnson Joseph
Published: August 2024

A brief interview with the current winner of the CENFAD Emerging Scholar grant, Elías Gonzalez.
"The Third Reich’s Elite Schools: A History of the Napolas" by Helen Roche, reviewed by Andrew Santora
Authors: Santora Andrew
Published: August 2024

A review of Helen Roche's 2022 publication, The Third Reich's Elite Schools: A History of the Napolas, completed by PhD candidate Andrew Santora.
Engaged Scholarship and Housing Security
Authors: Findlay Isobel , Bradford Lori
Published: August 2024

In this special issue on Engaged Scholarship and Housing Security, we share the insights of emergent approaches, digital tools, advocate-scholars, and community champions doing the hard work. We recognize, support, and highlight research and researchers of all types who are using engaged scholarship, community-based approaches, and/or community-driven and managed research and activities around housing security, including those using diverse and multiple ways of knowing about housing security.
Engaged Scholarship in the Context of Housing Insecurity and the Built Environment
Authors: Bradford Lori , Kirychuk Shelly , Martin Wanda , McPhedran Kerry
Published: August 2024

In this issue, Wanda Martin, Kerry McPhedran, Shelley Kirychuk, and Lori Bradford, ESJ’s editor-in-chief, explores the concept of engaged scholarship within the realm of housing insecurity and the built environment. They shared their insights and experiences regarding the challenges and opportunities inherent in engaged scholarship, particularly in addressing inequities in housing and the built environment.
Формування багатокомпонентних твердих розчинів у системі cBN—TiC—VN—Al за умов спікання композитів під високим тиском
Authors: Білявина Н.М. , Туркевич В.З. , Курилюк А.М. , Стратійчук Д.А. , Наконечна О.І.
Published: August 2024

Методом рентгеноструктурного аналізу детально досліджено кристалічну структуру карбіду титану (TiC) і нітриду ванадію (VN), які поряд із супутніми фазами містяться в композитах, отриманих HPHT (high pressure, high temperature) спіканням (7,7 ГПа, 1750—2300 °С) сумішей cBN—TiC—VN—Al двох складів (об. %): 60 : 17,5 : 17,5 : 5 і 60 : 25 : 15 : 5. Встановлено, що в результаті твердофазної взаємодії між TiC та VN, а також між TiC та алюмінієм зв’я'зки у продуктах спікання утворюються багатокомпонентні тверді розчини — (Ti,V)(C,N) та (V,Ti)N за температур 1750—1900 °С і (Ti,V,Al)(C,N) та (V,Ti)(N,C) за температур 2000—2350 °С. Кристалічні структури цих розчинів належать до модифікованої структури типу NaCl, яка містить додаткову правильну систему точок для розміщення атомів азоту та вуглецю. Визначено їх елементний склад. На основі аналізу отриманих у роботі рентгеноструктурних даних та отриманих раніше даних XEDS досліджень встановлено, що утворення зазначених твердих розчинів відбувається за двома основними механізмами: по-перше, це дифузія вивільнених у результаті розпаду VN та cBN потоків атомів азоту, які через наявний у реакційній зоні градієнт температур прямують до поверхні композита; по-друге, це міжфазна взаємодія металів Ti та V через границі зерен фаз TiC та VN, що контактують, а також міжфазна взаємодія зерен фази TiC з рідким алюмінієм зв’я'зки. У перспективі виготовлена певним способом суміш дрібнокристалічних багатокомпонентних карбонітридів (Ti,V)(C,N) та (V,Ti)(N,C) може слугувати функціональною домішкою для покращення механічних властивостей виробів з медичного титану ТВ6.
Medicina regenerativa de cartílago: efecto del tratamiento con ácido hialurónico reticulado bifásico en lesiones osteocondrales
Authors: Álvarez José Luis , Francioni Nicolás , Operti Clara , Orellana Marcelo Fabián , Santiago Octavio , Sarrio Leandro , Stur Mariel , Mardegan Issa Joao  Paulo , Fonseca Santiago , Feldman Sara
Published: August 2024

Objetivo: Evaluar si el tratamiento con ácido hialurónico reticulado bifásico de lesiones osteocondrales promovería la regeneración del tejido cartilaginoso, favoreciendo así la reparación de la lesión.
Materiales y Métodos: Quince conejos hembra adultos fueron divididos aleatoriamente en tres grupos: grupo 1, de control; grupo 2 y grupo 3, sometidos a una estrategia quirúrgica de lesión osteocondral en la rodilla derecha (4 mm de diámetro, 5 mm de profundidad), el grupo 3 recibió tratamiento con 0,2 ml de ácido hialurónico por vía intrarticular después de la cirugía. Se realizaron controles clínicos, bioquímicos, histopatológicos y estudios por imágenes.
Resultados: Se detectaron menos casos de dolor a la palpación en el grupo 3 que en el grupo 2 a partir de los 45 días. En la resonancia magnética, casi todas las muestras del grupo 3 tenían signos de regeneración del tejido cartilaginoso en el sitio de la lesión, sin edema óseo, ni derrame articular significativo. Los estudios histopatológicos de las muestras del grupo 3 indicaron un aumento de la matriz extracelular propia de tejido cartilaginoso, comparada con la del grupo 2, con hipercelularidad, dada por condrocitos, los que formaban grupos isogénicos axiales y coronales.
Conclusiones: Este estudio brinda evidencias de que el tratamiento con ácido hialurónico reticulado bifásico en unidades experimentales de conejos con lesión osteocondral no tuvieron dolor en etapas tempranas después de la lesión, a diferencia de las unidades intervenidas y sin dicho tratamiento. A su vez, los estudios por imágenes e histopatológico mostraron la reparación del tejido dañado.
Fractura del fragmento de Wagstaffe-Le Fort en un paciente con luxofractura de tobillo. Equivalente cuadrimaleolar. Reporte de un caso
Authors: Romero Ante Juan Manuel , Carrasco Vélez Felipe
Published: August 2024

Se presenta el caso de una paciente que sufre una luxofractura del tobillo izquierdo con compromiso trimaleolar, pero, en la tomografía computarizada prequirúrgica, se documenta el compromiso adicional del tubérculo de Wagstaffe-Le Fort, por lo que se decide considerarlo como un equivalente cuadrimaleolar diferente de los descritos previamente con el compromiso del fragmento anterolateral de la tibia (Tillaux-Chaput). Este caso permite un enfoque de 360° de las lesiones de tobillo que afectan la congruenciaarticular y se propone un análisis osteo-ligamentario para su tratamiento definitivo, favoreciendo las reparaciones anatómicas para disminuir la necesidad de fijaciones transindesmales sin afectar el desenlace quirúrgico.
Académico Dr. Eduardo A. Zancolli (1924-2024)
Authors: Cagnone Juan Carlos
Published: August 2024

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Prevention of NICU Admission Hypothermia in Moderate- and Late-Preterm Infants
Authors: Winkler Amanda E. , Chou Joseph H. , West Elizabeth , Bleiler Carolyn , Bell Janet , Gilbert Jeanne , Duzyj Christina M. , Roumiantsev Sergei , Lerou Paul H. , Aurora Megan
Published: August 2024

BACKGROUND

Neonatal hypothermia is a common and preventable cause of neonatal morbidity and mortality. Although hypothermia prevention has been extensively studied in infants <32 weeks’ gestation, the authors of few studies have targeted moderate- and late-preterm infants (MLPIs) in the delivery room.

METHODS

This quality improvement initiative was conducted from June 2019 to June 2023 at the Massachusetts General Hospital NICU and Labor and Delivery Unit. All inborn MLPIs 32 + 0/7 to 36 + 6/7 weeks’ gestation admitted to the NICU were included. We expanded thermoregulatory measures typically used in protocols for infants <32 weeks’ gestation, including increasing delivery room ambient temperature to 74°F and thermal mattress use. The primary outcome was hypothermia (<36.5°C) after NICU admission. The balancing measure was hyperthermia (≥38 °C).

RESULTS

During the study period, there were 566 inborn MLPIs with a mean gestational age of 34 + 3/7 weeks and a mean birth weight of 2269 g. Special cause variation in neonatal hypothermia incidence was observed with a decrease from a mean baseline of 27% to 7.8% postintervention. Special cause variation was observed in hyperthermia incidence, with an increase from 1.4% to 6.2% postintervention largely initially associated with noncompliance with the protocol for thermal mattress removal.

CONCLUSIONS

The expansion of several thermoregulation techniques commonly used in infants <32 weeks’ gestation, particularly thermal mattress use, was associated with a decreased incidence of NICU admission hypothermia in MLPIs, with an increase in mild hyperthermia predominantly associated with concomitant polyethylene wrap use.
Creep and Shrinkage of Nonproprietary Ultra-High-Performance Concrete
Authors: Tatum Garrett , Martinez Lautaro , Brenkus Natassia
Published: August 2024

This paper presents the results of the experimental evaluation of four nonproprietary ultra-high-perfor¬mance concrete (UHPC) mixture proportions current¬ly being used for industrial applications by various precast concrete producers across the United States and Canada. The main objective of this research was to acquire data about the effects that creep and shrinkage phenomena produced with UHPC materials. Shrinkage was assessed by the ASTM C157 testing method modified by ASTM C1865 and ASTM C1698. Creep was evaluated by the ASTM C512 testing method modified by ASTM C1856. Results for creep and shrinkage strains and creep coefficient are pre¬sented and discussed. Comparisons with conventional concrete are also made. This detailed characterization of creep and shrinkage properties of the nonproprietary UHPC mixture proportions advances the understanding of UHPC materials and phenomena and offers useful information for further research on applications of UHPC for prestressed concrete structural components.
Quando una autorità si appella a sé stessa: l’ipotesi del giudicato del Supremo Tribunale della Segnatura Apostolica
Authors: Michowicz Przemysław
Published: August 2024

W niniejszym artykule autor poszukuje teoretycznych odpowiedzi dotyczących precyzyjnego wskazania techniki, za pomocą której sędziowie Trybunału Sygnatury Apostolskiej uznają autorytet wcześniejszej sentencji wydanej przez inny skład orzekający, jednakże przynależny do tego samego rodzaju Trybunału. Rozważania koncentrują się zatem wokół doktrynalnej dyskusji, przedmiotem której jest skuteczność i przewaga zastosowania przez Sygnaturę typowego dla systemów prawa precedensowego zasady stare decisis lub użyteczności argumentu interpretacyjnego ex auctoritate. Dociekania uwzględniają formalne i materialne przesłanki współczesnej i opublikowanej (niestety tylko częściowo) jurysprudencji Trybunału Sygnatury Apostolskiej bez pominięcia obowiązujących przepisów prawa, w granicach których i na podstawie których orzeka tenże Trybunał.
Kullanıcı deneyimleri bağlamında Instagram reklamlarının gözetleme kapitalizmi çerçevesinde incelenmesi
Authors: Apaydın Salih
Published: August 2024

Kullanıcıları ürün olarak gören ve hiçbir şey yapmadan sosyal ağlarda veya internet sitelerinde vakit geçirmelerini finansal gelire dönüştüren bu olgunun adı: Gözetleme kapitalizmidir. Kullanıcıların attığı her adımı, vakit geçirmek için yaptığı gerekli veya gereksiz her şey veriye dönüşür ve bu veri de şirketlere ya da reklam verenlere satılarak paraya dönüştürülmektedir. Kullanıcı verilerini paraya dönüştürme işlevini en iyi şekilde gerçekleştirenler sahip oldukları uygulama, web sitesi ve sosyal paylaşım siteleriyle birçok insanın gündelik yaşamında mutlaka kullandığı Meta, Microsoft ve Google gibi küresel şirketlerdir. Gözetleme kapitalizminin başını çeken bu şirketler kullanıcılardan elde ettikleri verileri, internet ortamında bir şey satmak isteyen tüm şirketlere satmaktadır. Gözetleme kapitalizmi pek çok teknolojiyi devreye sokar ama herhangi bir teknolojiyle eşit tutulamaz. Faaliyetleri platformları devreye sokabilir ama bu faaliyetler platformlarla aynı değildir. Makine zekasını devreye sokar ancak makinelere indirgenemez. Algoritmalar üretir ve onlara dayanır ama algoritmalarla aynı değildir. Bu tanımlamalar bağlamında çalışmada bireylerin yaşamlarını birçok yönden etkileyen gözetleme kapitalizminin kanunlarını bireylerin deneyimleri aracılığıyla anlama çabasının ortaya konulması amaçlanmıştır.
Elde edilen bulgular gözetleme kapitalizminin, post-panoptik bir araç olarak Instagram gibi sosyal medya platformları aracılığıyla kullanıcı deneyimlerini etkilediğini aynı zamanda tüketici davranışlarını izleyerek ve analiz ederek daha etkili reklam stratejileri ortaya koyduğunu işaret etmektedir.
CONTENT OF BOWMAN-BIRK INHIBITOR IN SEEDS OF SOYBEAN VARIETIES OF ODESA SELECTION
Authors: Malinovskii V. , Sichkar V. , Levytskyi А. , Lapinska А.
Published: August 2024

The article shows that proteolysis (enzymatic hydrolysis of proteins) is a fundamental biological reaction that underlies such biological processes as digestion, reutilization of tissue proteins, immunity, neuroendocrine regulation, inflammation and dystrophy, and in some cases, as defense against pathogens. The most important regulators of proteolysis are inhibitors of proteolytic enzymes, which make them effective factors influencing the state of a significant number of biological processes. There are 2 inhibitors of proteolytic enzymes in soybeans: Kunitz inhibitor (KI), which inhibits trypsin, and Bowman-Birk inhibitor (BBI), which inhibits trypsin, chymotrypsin, elastase, cathepsins, and microbial proteases. Unlike the KI inhibitor, the BBI inhibitor is thermostable and remains in soy products (meal, cake) after defatting. Therefore, it is important to use soy products with a minimum content of BBI in feeding animals. Goal of work. To determine the content of BBI in promising soybean varieties of Odesa selection. Materials and methods. 12 soybean varieties of the Odesa selection were studied (Euridika, Orpheus, Aurora, Pivdenna zorya, Ariadna, Phoenix, Vasylkivska, Taverna, Serenada, Odesitka, Zmina, Zvytyaga). After grinding the beans and defatting the flour with acetone, the inhibitor was extracted with acetate buffer (0.05 M, pH 4.5) and the extract was mixed with three volumes of acetone. After keeping the mixture at a temperature of -16°C for 2 days, the precipitate was centrifuged and dissolved in 0.5% NaHCO3. The content of BBI was determined by the effect on chymotrypsin, the activity of which was assessed by the rate of casein hydrolysis by Kunitz-Levytskyi method. Results. It was established that the content of BBI in the investigated soybean varieties varies from 93.6 ?g/g (Euridika) to 368.8 ?g/g (Serenada). The soybean varieties Taverna (323.8 ?g/g), Vasylkivska (290.9 ?g/g), as well as Zmina (282.0 ?g/g) and Ariadna (263.0 ?g/g) are characterized by a high content of BBI. Conclusion. New soybean varieties of the Odesa selection contain a small amount of BBI and can be used in animal feeding after conventional heat treatment without additional BBI removal.
Application of Tamarind Seed Powder as a Natural Coagulant in Drinking Water Purification
Authors: Hoonka Vaibhav , Tiwari Manish , Khare Arun Kumar , Tiwari Preeti , Lodhi Ashish
Published: August 2024

The quest for sustainable and environmentally friendly methods of drinking water purification has gained momentum as traditional chemical coagulants face scrutiny for their environmental and health impacts. This research investigates the use of tamarind seed powder as a natural coagulant for drinking water purification. Tamarind seeds, often considered agricultural waste, are rich in mucilage and polysaccharides that contribute to their coagulation properties. This study explores the effectiveness of tamarind seed powder in removing turbidity, organic matter, and contaminants from drinking water, compares its performance with conventional coagulants, and assesses its environmental and economic benefits. The findings suggest that tamarind seed powder is a viable and sustainable alternative for drinking water treatment.