bluuebunny/crossref_metadata_2025 huggingface dataset:
Assessment of the consequences of the destruction of the Kakhovska hpp dam on irrigated lands in the zone of influence of the Kakhovsky water reservoir
Authors: Dorosh Y. , Ibatullin Sh. , Dorosh O. , Sakal О. , Dorosh А. , Tarasenko А.
Published: May 2024

According to preliminary estimates by scientists of the Institute of Land Use of the National Academy of Sciences, it was established that the area of irrigated agricultural land, which is in the zone of influence of the Kakhovsky Reservoir, including the occupied territories, amounted to 1,267.8 thousand hectares, of which about 500 thousand hectares had potential irrigation. The need for a more detailed study of the spatial identification of irrigated lands has been proven. The area of irrigated land in the area of influence of the Kakhovsky Reservoir was clarified by spatial comparison and digitization of: irrigation schemes, boundaries of land plots, boundaries of irrigated fields according to indices of vegetation and soil moisture using GIS technologies and remote sensing of the Earth. This makes it possible to calculate the area of agricultural land, the irrigation of which will be complicated due to the destruction of the dam of the Kakhovska HPP and changes in the Kakhovsky reservoir. In the future, it is important to determine and evaluate the impact of hostilities and other negative phenomena of armed aggression in this region on land use and infrastructure.
Based on a preliminary analysis of hydrography and water channels, the scientists of the Institute of Land Use of the National Academy of Sciences of the Russian Academy of Sciences determined administrative districts whose land irrigation depended on the Kakhovsky Reservoir.
It is proposed to introduce the accounting of reclaimed land, as well as land affected by hostilities in the cadastre.
We believe that monitoring of irrigated and drained lands, and lands that will be returned to circulation after the elimination of the effects of hostilities, should be an element of land monitoring.
Management of the historical and cultural value of territories through the formation of historical areas of cities
Authors: Martyn А. , Novakovska I. , Novakovsky D
Published: May 2024

Lands on which cultural heritage monuments, their complexes (ensembles), historical and cultural protected territories, protected archaeological territories, open-air museums, memorial museums-manors are located, in accordance with the legislation of Ukraine, belong to lands of historical and cultural purpose. The organization and establishment of the boundaries of the territories of historical and cultural purpose, restrictions on their use and their regime-forming objects is carried out in accordance with the projects and technical documentation of land management. For the territories of the nature reserve fund and other nature conservation purposes, health, recreational, historical and cultural, forestry purposes, water fund lands and water protection zones, the land legislation establishes the same procedure for developing the composition and geodetic and cartographic substantiation of land management projects, as well as for their approval and approval . This provision has existed for a long time, despite the fact that the given list combines six categories of land with different legal regimes.

The boundaries of historical areas and the modes of their use are indicated in the documentation on land management, urban planning and scientific project documentation on the protection of cultural heritage, which determines the need for their mutual consistency. The article examines the legal and organizational provisions of the formation of the historical and cultural potential of the historical areas of cities. In connection with the discrepancies in the legal acts, proposals for the codification of legal norms regarding the composition and distribution of land by category, setting restrictions, regulation of construction, landscape protection zones and archaeological layer are substantiated. The proposed approaches to the definition and calculation of the economic efficiency of historical areas include a variety of methods that allow for the assessment of both quantitative and qualitative aspects of the preservation of cultural heritage.
Decision Considerations and Strategies for Lip Surgery in Patients with Cleft lip/Palate: A Qualitative Study
Authors: Ann Trotman Carroll
Published: May 2024

Objective: To qualitatively assess surgeons’ decision making for lip surgery in patients with cleft lip/palate (CL/P). Design: Prospective, non-randomized, clinical trial. Setting: Clinical data institutional laboratory setting. Patients, Participants: The study included both patient and surgeon participants recruited from four craniofacial centers. The patient participants were babies with a CL/P requiring primary lip repair surgery (n=16) and adolescents with repaired CL/P who may require secondary lip revision surgery (n=32). The surgeon participants (n=8) were experienced in cleft care. Facial imaging data that included 2D images, 3D images, videos, and objective 3D visual modelling of facial movements were collected from each patient, and compiled as a collage termed the ‘Standardized Assessment for Facial Surgery (SAFS)’ for systematic viewing by the surgeons. Interventions: The SAFS served as the intervention. Each surgeon viewed the SAFS for six distinct patients (two babies and four adolescents) and provided a list of surgical problems and goals. Then an in-depth-interview (IDI) was conducted with each surgeon to explore their decision-making processes. IDIs were conducted either ‘in person’ or virtually, recorded, and then transcribed for qualitative statistical analyses using the Grounded Theory Method. Results: Rich narratives/themes emerged that included timing of the surgery; risks/limitations and benefits of surgery; patient/family goals; planning for muscle repair and scarring; multiplicity of surgeries and their impact; and availability of resources. In general, there was surgeon agreement for the diagnoses/treatments. Conclusions: The themes provided important information to populate a checklist of considerations to serve as a guide for clinicians.
Perspectivas afroncentradas de ensino em Comunicação:
Authors: Conceição dos Santos Pedro Henrique , Rodrigues Geisa
Published: May 2024

Este trabalho reúne as experiências de práticas docentes e discute sobre perspectivas afrocentradas de ensino na área da Comunicação Social. A partir dos relatos apresentados, a partir de um recorte espaço-temporal – da disciplina ministrada pelos autores no ano de 2020, na Universidade Federal Fluminense –, pretendemos analisar a importância e a urgência dos temas étnico-raciais na formação de graduandos da área, tanto em relação ao mercado de trabalho quanto à formação acadêmica. Com o avanço de políticas públicas que dirimiram as desigualdades socioeconômicas no Brasil, como é o caso das cotas raciais em universidades, percebemos a necessidade de um outro aprofundamento dentro do ambiente do Ensino Superior: temas, disciplinas, bibliografia e professores negros.
Mercado editorial e interseccionalidade
Authors: Moreno Fernandes Pablo , Da Silva Moura Rannyson
Published: May 2024

Tomando como base as listas de livros mais vendidos entre os anos de 2020 e 2022, publicadas pela PublishNews e Amazon, o artigo tem como objetivo analisar a relação entre consumo no mercado editorial e as interseccionalidades, buscando evidenciar quais vozes são consumidas pela população brasileira. A metodologia é pautada na roleta interseccional, ferramenta proposta por Fernanda Carrera (2021) e que visa mostrar o potencial da comunicação como caminho para expor injustiças representacionais e discursivas. A partir da análise feita, foi possível perceber que as listas de livros mais vendidos revelam matrizes de privilégio ao serem compostas, majoritariamente, por sujeitos que remetem ao padrão universalizado: homens, brancos e estadunidenses. Em contraponto, as minorias sociais são vistas esporadicamente, como uma cota de diversidade.
Performance como estratégia mercadológica
Authors: Dos Santos Moura Amanda
Published: May 2024

Neste artigo, refletimos sobre como as mudanças sociais ecoam no mercado e, muitas vezes, transformam os discursos publicados na conta do Instagram da revista feminina brasileira Glamour. Pensamos, então, sobre como esses discursos são apresentados, e se reforçam ou refutam outros já existentes em uma sociedade estruturalmente racista (ALMEIDA, 2018), como a brasileira. Além disso, analisamos como as branquitudes fundamentam e colaboram com a construção dessa representação das mulheres negras, considerando especificamente o contexto digital. Para tal, refletimos sobre a atuação da revista Glamour nas publicações em sua conta de Instagram no Dia da Consciência Negra, 20 de novembro, no ano de 2022, especialmente, em relação à raça, racismo e gênero. Levando em consideração, principalmente, os conceitos de performance (AMARAL; SOARES; e POLIVANOV, 2018); capital solidário (CAMPANELLA, 2014); coerência expressiva (SÁ e POLIVANOV, 2012); e daltonismo racial (BONILLA-SILVA, 2006; HAMILTON, 2020; e NOBLE, 2016).
A ideologia da gestão da diversidade
Authors: Andrelo Roseane , Marques Leonardo
Published: May 2024

A atuação dos movimentos sociais no início da década de 1970 provocou, dentre outras coisas, uma transformação nas relações trabalhistas ao inserir, na realidade das organizações, funcionários pertencentes aos grupos subalternizados. Desse momento em diante, o setor administrativo viu-se afetado com a possibilidade iminente de um conflito, para controlar e evitar esse fenômeno iniciou-se uma estratégia chamada “gestão da diversidade”, que estabeleceu uma ideologia para lidar com as diferenças sociais no contexto organizacional. Nos anos seguintes, coube a atuação dos gestores, acadêmicos da área administrativa e a mídia especializada difundir os ideais da “gestão da diversidade”. A tarefa deste artigo é compreender como as revistas Exame e Istoé Dinheiro abordam o tema da diferença social nas organizações e quais são seus conteúdos ideológicos. Os resultados obtidos apontam para: 1) o vínculo entre gestão da diversidade e o retorno financeiro; 2) a fragilidade do termo diversidade; 3) a fixação de papéis entre as diferentes identidades; 4) o uso da comunicação como ferramenta de apoio.
Por uma perspectiva unitária na análise interseccional em Comunicação
Authors: Brochado Samara , Conceição dos Santos Pedro Henrique
Published: May 2024

Neste artigo, apresentamos a importância de uma perspectiva unitária em análises interseccionais na Comunicação. Partimos da ideia de que, no momento em que há uma relação de opressão no qual, atualmente, toma uma forma específica derivada da organização socioeconômica em vigência, ela deve ser percebida de modo unitário, havendo uma dialética conexão com a esfera da reprodução social. Associando os métodos da roleta interseccional, da teoria da reprodução social com a análise de conteúdo, investigaremos como a produção de publicações do Geledés, para a rede social digital Facebook, com foco no tema “interseccionalidade”, atualiza o conceito de “classe” como categoria interseccional.
FIGURATIONS OF THE FUTURE
Authors: Krøijer Stine
Published: May 2024

Built around key events, from the eviction of a self-managed social centre in Copenhagen in 2007 to the Climate Summit protests in 2009, this book contributes to anthropological literature on contemporary Euro-American politics foreshadowing recent waves of public dissent. Stine Krøijer explores political forms among left radical and anarchist activists in Northern Europe focusing on how forms of action engender time. Drawing on anthropological literature from both Scandinavia and the Amazon, this ethnography recasts theoretical concerns about body politics, political intentionality, aesthetics, and time.
THE LIVING ANCESTORS
Authors: Jokic Zeljko
Published: May 2024

This phenomenologically oriented ethnography focuses on experiential aspects of Yanomami shamanism, including shamanistic activities in the context of cultural change. The author interweaves ethnographic material with theoretical components of a holographic principle, or the idea that the “part is equal to the whole,” which is embedded in the nature of the Yanomami macrocosm, human dwelling, multiple-soul components, and shamans’ relationships with embodied spirit-helpers. This book fills an important gap in the regional study of Yanomami people, and, on a broader scale, enriches understanding of this ancient phenomenon by focusing on the consciousness involved in shamanism through firsthand experiential involvement.
MAKING UBUMWE
Authors: Purdeková Andrea
Published: May 2024

Since the end of the Rwandan genocide, the new political elite has been challenged with building a unified nation. Reaching beyond the better-studied topics of post-conflict justice and memory, the book investigates the project of civic education, the upsurge of state-led neo-traditional institutions and activities, and the use of camps and retreats shape the “ideal” Rwandan citizen. Rwanda’s ingando camps offer unique insights into the uses of dislocation and liminality in an attempt to anchor identities and desired political roles, to practically orient and symbolically place individuals in the new Rwandan order, and, ultimately, to create additional platforms for the reproduction of political power itself.
MATTERS OF TESTIMONY
Authors: Chare Nicholas , Williams Dominic
Published: May 2024

In 1944, members of the Sonderkommando—the “special squads,” composed almost exclusively of Jewish prisoners, who ensured the smooth operation of the gas chambers and had firsthand knowledge of the extermination process—buried on the grounds of Auschwitz-Birkenau a series of remarkable eyewitness accounts of Nazi genocide. This careful and penetrating study examines anew these “Scrolls of Auschwitz,” which were gradually recovered, in damaged and fragmentary form, in the years following the camp’s liberation. It painstakingly reconstructs their historical context and textual content, revealing complex literary works that resist narrow moral judgment and engage difficult questions about the limits of testimony.
WHO KNOWS TOMORROW?
Authors: Calkins Sandra
Published: May 2024

Although uncertainty is intertwined with all human activity, plans, and aspirations, it is experienced differently: at times it is obsessed over and at times it is ignored. This ethnography shows how Rashaida in north-eastern Sudan deal with unknowns from day-to-day unpredictability to life-threatening dangers. It argues that the amplification of uncertainty in some cases and its extenuation in others can be better understood by focusing on forms that can either hold the world together or invite doubt. Uncertainty, then, need not be seen solely as a debilitating problem, but also as an opportunity to create other futures.
ENGAGING WITH STRANGERS
Authors: McDougall Debra
Published: May 2024

The civil conflict in Solomon Islands (1998-2003) is often blamed on the failure of the nation-state to encompass culturally diverse and politically fragmented communities. Writing of Ranongga Island, the author tracks engagements with strangers across many realms of life—pre-colonial warfare, Christian conversion, logging and conservation, even post-conflict state building. She describes startling reversals in which strangers become attached to local places, even as kinspeople are estranged from one another and from their homes. Against stereotypes of rural insularity, she argues that a distinctive cosmopolitan openness to others is evident in the rural Solomons in times of war and peace.
DESIRES FOR REALITY
Authors: Halligan Benjamin
Published: May 2024

As with many aspects of European cultural life, film was galvanized and transformed by the revolutionary fervor of 1968. This groundbreaking study provides a full account of the era’s cinematic crises, innovations, and provocations, as well as the social and aesthetic contexts in which they appeared. The author mounts a genuinely fresh analysis of a contested period in which everything from the avant-garde experiments of Godard, Pasolini, Schroeter, and Fassbinder to the “low” cinematic genres of horror, pornography, and the Western reflected the cultural upheaval of youth in revolt—a cinema for the barricades.
DISRUPTED LANDSCAPES
Authors: Dorondel Stefan
Published: May 2024

The fall of the Soviet Union was a transformative event for the national political economies of Eastern Europe, leading not only to new regimes of ownership and development but to dramatic changes in the natural world itself. This painstakingly researched volume focuses on the emblematic case of postsocialist Romania, in which the transition from collectivization to privatization profoundly reshaped the nation’s forests, farmlands, and rivers. From bureaucrats abetting illegal deforestation to peasants opposing government agricultural policies, it reveals the social and political mechanisms by which neoliberalism was introduced into the Romanian landscape.
TROPICS OF VIENNA
Authors: Bach Ulrich E.
Published: May 2024

The Austrian Empire was not a colonial power in the sense that fellow actors like 19th-century England and France were. It nevertheless oversaw a multinational federation where the capital of Vienna was unmistakably linked with its eastern periphery in a quasi-colonial arrangement that inevitably shaped the cultural and intellectual life of the Habsburg Empire. This was particularly evident in the era’s colonial utopian writing, and Tropics of Vienna blends literary criticism, cultural theory, and historical analysis to illuminate this curious genre. By analyzing the works of Leopold von Sacher-Masoch, Theodor Herzl, Joseph Roth, and other representative Austrian writers, it reveals a shared longing for alternative social and spatial configurations beyond the concept of the “nation-state” prevalent at the time.
COMING OF AGE
Authors: Kalb Martin
Published: May 2024

In the lean and anxious years following World War II, Munich society became obsessed with the moral condition of its youth. Initially born of the economic and social disruption of the war years, a preoccupation with juvenile delinquency progressed into a full-blown panic over the hypothetical threat that young men and women posed to postwar stability. As Martin Kalb shows in this fascinating study, constructs like the rowdy young boy and the sexually deviant girl served as proxies for the diffuse fears of adult society, while allowing authorities ranging from local institutions to the U.S. military government to strengthen forms of social control.
Technical Systems Effectiveness Management Technique
Authors: Sazonov K. , Mikhailov R. , Ratoushin A.
Published: May 2024

Currently, the task of performing a target function by a technical system with minimal resource costs is urgent. Obtaining the beneficial effect of a vehicle depends on many factors, which can become the basis for the formation of a control effect on the functional part of the system. At the same time, it is necessary to take into account the importance of a useful (target) effect in order to manage the technical systems effectiveness. The purpose of this article is to describe an instrument that allows adaptively redistributing the resource spent on the implementation of a purposeful process in the vehicle, based on the requirements of the consumer function and the target effect. As a result of the conducted research, the article proposes a technique for redistributing the resource of a technical system in the interests of its effectiveness management. The features of the presented technique are the visibility of its results presentation, as well as the possibility of application in evaluating the effectiveness and it`s management in relation to various types of technical systems, which will allow to substantiate the practical significance of obtained results.
Penerapan Pembelajaran Matematika Realistik Berbantuan GeoGebra untuk Meningkatkan Kemampuan Komunikasi Matematis Siswa SMP
Authors: Nopiyani Dian , Turmudi  , Prabawanto Sufyani
Published: May 2024

Penelitian ini dilatarbelakangi oleh adanya fakta bahwa kemampuan komunikasi matematis di Indonesia tergolong rendah. Model maupun pendekatan yang digunakan dalam proses pembelajaran menjadi salah satu faktor pendukung keberhasilan pembelajaran matematika di kelas. Tujuan dari penelitian ini yaitu untuk menganalisis kemampuan komunikasi matematis siswa SMP dengan pembelajaran matematika realistik berbantuan GeoGebra. Metode penelitian yang digunakan yaitu kuasi eksperimen. Penelitian dilakukan di sebuah SMP Negeri di Lembang, Bandung. Hasil analisis menunjukkan bahwa instrumen tes valid dan reliabel sehingga dapat digunakan untuk pretes dan postes. Hasil penelitian menunjukkan bahwa kemampuan komunikasi matematis siswa yang memperoleh pembelajaran matematika realistik berbantuan GeoGebra lebih baik daripada siswa yang memperoleh pembelajaran matematika realistik tanpa GeoGebra. Hasil penelitian juga menunjukkan bahwa terdapat respon yang positif dari siswa terhadap pembelajaran matematika realistik dengan GeoGebra.
The research was taken because the fact shows that the mathematical communication skill in Indonesia is weak. Models and approaches which are used in learning process being one of the factors that supports the success of mathematical learning. The purpose of this study is to analyze the mathematical communication skill of students in Junior High School by using Realistic Mathematics Education with GeoGebra. This study used a quasi-experiment method. It was held in a Junior High School in Lembang, Bandung. The result of this study showed that mathematical communication of students who learned mathematics using Realistic Mathematics Education with GeoGebra are better than students who learned mathematics using Realistic Mathematics Education with no GeoGebra. The result also indicated that there are positive responses from students toward Realistic Mathematics Education with GeoGebra.
Kaitan antara Gaya Belajar, Kemandirian Belajar, dan Kemampuan Pemecahan Masalah Siswa SMP dalam Pelajaran Matematika
Authors: Sundayana Rostina
Published: May 2024

Pada umumnya kemandirian belajar dan kemampuan pemecahan masalah matematika  siswa SMP masih rendah. Guru sebagai pelaksana kegiatan belajar mengajar, menjadi faktor utama yang menjadi penyebab masalah tersebut terjadi. Salah satu upaya yang dapat dilakukan guru adalah menciptakan suasana belajar yang cocok dengan jenis gaya belajar siswa (auditorial, visual, ataupun kinestetik), sehingga diharapkan tujuan pembelajaran dapat dicapai secara efektif. Penelitian ini dilakukan di SMP Negeri 2 Tarogong Kidul  kelas IX pada tahun ajaran 2015-2016 semester ganjil. Metode penelitian yang digunakan berupa penelitian eksplanatif komparatif-asosatif.  Dari hasil penelitian terungkap bahwa: 1) Tidak terdapat perbedaan kemampuan pemecahan masalah matematik, antar siswa ditinjau dari jenis gaya belajarnya. 2) Tidak terdapat perbedaan tingkat kemandirian belajar matematika antar siswa ditinjau dari gaya belajarnya. 3) Kemandirian belajar siswa mempengaruhi tingkat kemampuan pemecahan masalah matematis siswa. Dari hasil penelitian tersebut menunjukkan bahwa setiap siswa, baik yang mempunyai gaya belajar auditorial, visual, ataupun kinestetik mempunyai tingkat kemandirian belajar dan kemampuan pemecahan masalah matematik  yang sama. Selain itu, diketahui pula bahwa semakin tinggi tingkat kemandirian belajar siswa, maka semakin tinggi pula kemampuan pemecahan masalah matematis siswa.
In general, independent learning and problem-solving ability mathematics junior high school students is still low. Teachers practice teaching and learning activities, the main factor that causes the problem from happening. One of the efforts that teachers can do is to create a learning environment that matches the kind of student learning styles (auditory, visual, or kinesthetic), so hopefully learning objectives can be achieved effectively. This research was conducted in Tarogong South Junior High School 2 class IX in odd semester of school year 2015-2016. The method used in the form of comparative research explanation associative. From the results of the study revealed that: 1) There is no difference in mathematical problem-solving skills, among students in terms of the type of learning style. 2) There is no difference in the level of independence of learning mathematics among students in terms of learning styles. 3) Independence of student learning affects the level of students' mathematical problem-solving ability. From the results of these studies indicate that each student, both of which have auditory learning style, visual, or kinesthetic have this level of independent learning and problem-solving skills the same mathematical. In addition, it is also known that the higher the level of independence of student learning, the higher the students' mathematical problem-solving ability.
Upaya Peningkatan Kemampuan Pemecahan Masalah Matematis Siswa dengan Pendidikan Matematika Realistik Indonesia
Authors: Wahyuni Reni
Published: May 2024

Penelitian ini merupakan suatu penelitian tindakan kelas yang berkolaborasi dengan guru matematika di sekolah sehingga tujuan penelitian adalah untuk memperbaiki proses pembelajaran sehingga memiliki dampak pada upaya peningkatan kemampuan pemecahan masalah matematis siswa kelas VIIc MTs Diniyah Puteri Pekanbaru. Secara teoritis dipilihlah suatu proses pembelajaran yang sesuai dengan masalah di kelas tersebut adalah Pendidikan Matematika Realistik Indonesia (PMRI) sebagai penerapannya.  Pada penelitian ini didesain dengan menerapkan pendekatan PMRI berdasarkan karakteristik PMRI. Penelitian ini terdiri dari dua siklus untuk memperbaiki proses pembelajaran dan melihat kemampuan pemecahan masalah matematis siswa. Berdasarkan hasil analisis data dengan menggunakan lembar pengamatan pada siklus 1 dan siklus 2 maka terjadi perbaikan proses pembelajaran yang terlihat dari kegiatan aktifan siswa dalam belajar, bekerja sama, rasa ingin tahu , diskusi dan memberikan respon pada presentasi kelompok. Selanjutnya jika ditinjau tes kemampuan pemecahan masalah matematis siswa maka diperoleh rata-rata 63.15 dengan ketuntasan sebanyak 11 siswa sedangkan pada siklus II memperoleh rata-rata 70,70 dengan ketuntasan sebanyak 15 siswa. Secara klasikal terjadi peningkatan ketuntasan sebanyak 4 orang dari siklus 1 ke siklus 2 maka dapat disimpulkan bahwa pendekatan PMRI dapat memperbaiki proses pembelajaran dan meningkatkan kemampuan pemecahan masalah matematis siswa kelas VIIc MTs Diniyah Puteri Pekanbaru.
This research is classroom action research in collaboration with schools' mathematics teachers so that the purpose of research is to improve the learning process so as to have an impact on improving the students' mathematical problem-solving ability VIIc grade MTs Diniyah Puteri Pekanbaru. Theoretically chosen a learning process that is appropriate to the problem in the class is Indonesian Realistic Mathematics Education (PMRI) as its application. In this study was designed to implement an approach based on the characteristics PMRI. The study consisted of two cycles to improve the learning process and see the students' mathematical problem-solving ability. Based on the analysis of data using observation sheet in cycle 1 and cycle 2, the improvements were visible learning process of the students in learning activities, working together, curiosity, discussion and responses to the group presentation. Furthermore, if the review test students' mathematical problem-solving ability, then gained an average of 63.15 with a mastery of as many as 11 students while in the second cycle obtain an average of 70.70 with a mastery of as many as 15 students. Traditionally an increase of completeness of 4 people from cycle 1 to cycle 2 it could be concluded that PMRI approach could improve the learning process and improve students' mathematical problem-solving ability class VIIc MTs Diniyah Puteri Pekanbaru.
Mengembangkan Kemampuan Komunikasi Matematik Siswa melalui Strategi Think Talk Write
Authors: Nuraeni Reni , Luritawaty Irena Puji
Published: May 2024

Penelitian ini didasarkan pada permasalahan rendahnya kemampuan komunikasi matematik siswa. Sebagai alternatif dari permasalahan tersebut, dilakukan penelitian dengan penerapan strategi think talk write dalam pembelajaran. Penelitian ini mengkaji pencapaian kemampuan komunikasi matematik siswa yang memperoleh strategi pembelajaran think talk write dengan pembelajaran konvensional. Penelitian ini merupakan penelitian kuasi eksperimen dengan menggunakan teknik purposive sampling. Populasi dalam penelitian ini adalah seluruh siswa salah satu MTs swasta di Kabupaten Garut. Untuk sampel penelitiannya diambil dua kelas tingkat VII, satu kelas sebagai kelas kontrol dan satu kelas lainnya sebagai kelas eksperimen. Instrumen yang digunakan dalam penelitian berupa tes kemampuan komunikasi matematik. Analisis data dilakukan dengan uji statistik deskriptif dan inferensial. Hasil penelitian menunjukkan bahwa pencapaian kemampuan komunikasi matematik siswa yang memperoleh strategi pembelajaran think talk write lebih baik daripada siswa yang memperoleh pembelajaran konvensional.
This research is based on the issues of mathematical communication skills students lack. As an alternative to that problem, conducted research with the implementation of the strategy think talk write in the study. This research examines the achievements of mathematical communication skills students acquire learning strategies think talk write with conventional learning. This research was quasi experimental study by using purposive sampling technique. The population in this study are all the students one of MTs in Garut. The research sample is taken for two grade levels VII, one class as the control class and one other class as a experiment class. The instruments used in the study of mathematical communication ability tests. The data analysis done with test descriptive statistics and inferensial. The results showed that the achievement of mathematical communication skills students acquire learning strategies think talk write better than students who get conventional instruction.
Meninjau Kemampuan Penalaran Matematis Siswa SMP melalui Wawancara Berbasis Tugas Geometri
Authors: Siregar Nurfadilah
Published: May 2024

Studi awal atau biasa disebut dengan pilot study merupakan studi pendahuluan yang dilakukan oleh kebanyakan peneliti sebagai suatu hal yang penting dalam proyek penelitian selanjutnya. Pada tulisan ini, penulis memaparkan hasil wawancara yang dilakukan dengan dua orang siswa kelas VIII pada salah satu sekolah menengah pertama di Kabupaten Bandung Barat terkait dengan menggali penalaran matematis siswa SMP. Wawancara dilakukan dengan menggunakan pedoman wawancara berbasis tugas geometri. Diperoleh hasil bahwa penalaran matematis kedua siswa tersebut terkait penyelesaian tugas geometri masih rendah. Siswa lebih cenderung menyelesaikan tugas secara langsung tanpa mengetahui alasan mereka menjawab tugas geometri tersebut.
Preliminary study or commonly called the pilot study is a study conducted by most researchers as an important issue in future research projects. In this paper, the author present results of interviews conducted with two students in eighth grade at one of junior high school in West Bandung regency about digging their mathematical reasoning. Interviews were conducted by using a task-based geometry. The results indicate that mathematical reasoning of the students’ related to the completion of geometry task still low. Students more likely to complete tasks directly without knowing the reason they answered the geometry tasks.
Peningkatan Kemampuan Representasi Matematis Siswa Kelas X2 SMAN 1 Gedung Meneng Menggunakan Bahan Ajar Matriks Berbasis Pendekatan Saintifik
Authors: Ramziah Siti
Published: May 2024

Penelitian ini bertujuan untuk meningkatkan aktivitas dan kemampuan representasi matematis siswa kelas X2 SMA Negeri 1 Gedung Meneng dalam menggunakan bahan ajar matriks yang dikembangkan dengan pendekatan saintifik. Penelitian menggunakan metode classroomaction research atau penelitian tindakan kelas yang memiliki desain yang berupa daur spiral dengan empat langkah utama yaitu: perencanaan, tindakan, pengamatan dan refleksi. Pengumpulan data pada penelitian ini menggunakan observasi dan tes. Semua data yang dikumpulkan kemudian dianalisis dan dapat disimpulkan bahwa bahan ajar matriks yang dikembangkan menggunakan pendekatan saintifik dapat meningkatkan aktivitas siswa yang dapat dilihat dari besarnya peningkatan aktivitas siswa tersebut sebesar 9,9%.Bahan ajar matriks yang dikembangkan menggunakan pendekatan saintifik dapat meningkatkan kemampuan representasi matematis siswa yang dapat dilihat dari besarnya peningkatan kemampuan tersebut sebesar 8,15% yang diiringi juga dengan meningkatnya hasil belajar siswa secara klasikal sebesar 10,3%.
This study aims to improve the activity and the ability of the mathematical representation X2 grade students of SMA Negeri 1 Gedung Meneng in using teaching materials matrix developed by scientific approach. Research method iss classroom action research or action research that has a design in the form of a spiral cycle with four main steps: planning, action, observation and reflection. Collecting data in this study used observation and tests. All data collected was analyzed and concluded that the teaching material matrix developed using a scientific approach could increase the activity of students. It could be seen from the increasing in the student activity by 9.9%. Teaching materials matrix developed using a scientific approach could improve students' mathematical representation that could be seen from the large increasing in the ability of 8.15% which accompanied by increasing student learning outcomes in classical amount to 10.3%.
Peningkatan Kemampuan Pemecahan Masalah Matematis Siswa melalui Pembelajaran Berbasis Masalah
Authors: Sumartini Tina Sri
Published: May 2024

Penelitian ini dilatarbelakangi oleh hasil-hasil penelitian terdahulu yang menunjukkan bahwa kemampuan pemecahan masalah matematis siswa belum sesuai dengan yang diharapkan. Salah satu pembelajaran untuk meningkatkan kemampuan pemecahan masalah matematis adalah pembelajaran berbasis masalah. Tujuan penelitian ini adalah untuk mengetahui peningkatan kemampuan pemecahan masalah  matematis siswa sebagai akibat dari pembelajaran berbasis masalah.  Penelitian ini adalah kuasi eksperimen yang menerapkan dua pembelajaran yaitu pembelajaran berbasis masalah dan  pembelajaran konvensional. Populasi dalam penelitian ini adalah siswa di salah satu SMK di Kabupaten Garut. Pengambilan sampel dilakukan secara purposive sampling, dan diperoleh dua kelas sebagai sampel penelitian. Instrumen penelitian yang digunakan adalah tes kemampuan pemecahan masalah matematis. Berdasarkan hasil analisis tersebut diperoleh kesimpulan bahwa: (1) peningkatan kemampuan pemecahan masalah matematis siswa yang mendapat pembelajaran berbasis masalah lebih baik daripada siswa yang mendapat pembelajaran konvensional, (2) Kesalahan-kesalahan yang dilakukan oleh siswa ketika mengerjakan soal-soal yang berkaitan dengan kemampuan pemecahan masalah matematis adalah kesalahan karena kecerobohan atau kurang cermat, kesalahan mentransformasikan informasi, kesalahan keterampilan proses, dan kesalahan memahami soal.
This research is motivated by the results of previous studies that showed that students' mathematical problem-solving ability is not as expected. One lesson to improve mathematical problem solving is based learning problems. The purpose of this study was to determine the increase in students' mathematical problem-solving ability as a result of problem-based learning. This study is a quasi-experimental study that applies two problem-based learning and conventional learning. The population in this study were students in one of the vocational schools in Garut. Sampling was done by purposive sampling and obtained two classes as the study sample. The research instrument used was a test of mathematical problem-solving abilities. Based on these results we concluded that: (1) the increase in students' mathematical problem-solving ability that gets problem-based learning better than students who received conventional learning, (2) mistakes made by student when working on the problems related to mathematical problem-solving ability was a mistake due to carelessness or less closely, transform fault information, error process skills, and misunderstanding question.
Profil Kemampuan Koneksi Matematika Siswa SMP dalam Memecahkan Masalah Matematika Ditinjau dari Gender
Authors: Apriyono Fikri
Published: May 2024

Penelitian ini bertujuan untuk mendeskripsikan profil kemampuan koneksi matematika dalam memecahkan masalah matematika ditinjau gender. Pemilihan subjek laki-laki dan perempuan berdasarkan tingkat kemampuan yang setara dilihat dari tes kemampuan matematika dan nilai rapor. Penelitian ini menggunakan metode kualitatif dimana data yang diperoleh berupa kata-kata tertulis atau lisan dari orang-orang dan perilaku yang dapat diamati. Teknik pengumpulan datanya dilakukan dengan pemberian tes pemahaman konsep dan wawancara. Dalam penelitian ini diamati siswa laki-laki dan perempuan SMPN 4 Jember kelas VIII. Peneliti melakukan wawancara pada kedua subjek penelitian. Wawancara tersebut direkam kemudian hasilnya ditranskripkan dan dikodekan. Untuk memperoleh data yang valid, data yang diperoleh ditriangulasi. Kemudian data yang valid dianalisis untuk memperoleh kesimpulan. Hasilnya berupa kemampuan koneksi matematika siswa SMP kelas VIII pada materi aljabar dan geometri.
This study aimed to describe the profile of mathematics connection ability to solve problems in terms of gender. Selection of male and female subjects based on equal ability level viewed from math skills tests and grades. This study uses a qualitative method where data is obtained in the form of words written or spoken of the people and the behaviors that can be observed. Data collection techniques were conducted by giving the concept understanding tests and interviews. This study observed both boys and girls in class VIII of SMPN 4 Jember. The researcher conducted interviews to both the research subjects. The interview was recorded and then the result was transcribed and coded. To obtain valid data, the data obtained were triangulated. Then the valid data were analyzed to obtain valid conclusions. The result is the mathematics connection ability class VIII of junior high school students of on the algebra and geometry matter. This article illustrates preparation of your paper using MS-WORD. Papers should not be numbered.
Postnatal cytomegalovirus infection and pulmonary vascular disease in extremely premature infants: A case series
Authors: Stanford A.H. , Chatmethakul T. , Rios D.R. , Giesinger R.E. , Thomas B. , Bischoff A.R. , Weiner L. , McNamara P.J.
Published: May 2024

BACKGROUND:

Pulmonary vascular disease (PVD) is a major determinant of both morbidity and mortality in extremely low birth weight infants. It is biologically plausible that postnatal cytomegalovirus (pCMV) infection may lead to PVD in premature infants secondary to pneumonitis or via derangement of pulmonary vascular development directly through endothelial dysfunction. Uncertainty remains, however, regarding thresholds for intervention in premature infants with cardiorespiratory instability and presumed CMV infection likely secondary to the limited understanding of the natural history of the disease.

METHODS/RESULTS:

We describe four cases of premature infants with clinical and echocardiography features of PVD, in the setting of postnatally acquired CMV. All patients had atypical PVD trajectories, refractory to vasodilator treatment, which improved after initiation of CMV treatment.

CONCLUSION:

We highlight the need to consider postnatally acquired CMV infection in patients with PVD non-responsive to standard pulmonary vasodilator therapies or disease severity which is out of proportion of the usual clinical trajectory. Treatment of extremely premature infants with CMV-associated PVD may have positive impact on cardiorespiratory health, although duration of therapy remains uncertain.
Performance improvement of PV systems during dynamic partial shading conditions using optimization algorithms
Authors: Sonam Soma Keerthi , R. Balamurugan , N. Karuppiah
Published: May 2024

PV power plants encounter varying levels of irradiance, temperature fluctuations, and partial shading because of the differences in sunlight conditions. Partial shading can cause an increase in the power loss, leading to a reduction in efficiency. Maximum Power Point Tracking (MPPT) is of utmost importance in the functioning of photovoltaic (PV) systems for electricity generation because it is indispensable for maximizing power extraction from PV modules, thereby increasing the overall power output. In situations where partial shading is present, the utilization of MPPT algorithms to achieve maximum power output becomes complex because of the existence of multiple distinct peak power points, each having a unique local optimum. To overcome this issue, a method is proposed that uses Darts Game Optimization (DGO), a game-based optimization process, to efficiently determine and extract the maximum power from various local optimal peaks. A population-based optimization method known as the Darts Game Optimization algorithm exists. In this approach, the optimization process begins by creating a population of random players. Then, the algorithm iteratively updates and improves the population to search for the best player or solution. In this study, the DGO algorithm was applied to the MPPT process for voltage optimization in the PV procedure. The DC-DC converter is utilized to capture the maximum available power, and the findings demonstrate that the DGO algorithm efficiently identifies the global maximum, resulting in accelerated convergence, reduced settling time, and minimized power oscillation. Through simulations, the feasibility and effectiveness of the DGO centered MPPT approach was confirmed and compared with MPPT algorithms relying on perturb and observe (P&O) and Particle Swarm Optimization (PSO). The simulation results offer compelling evidence that the DGO algorithm, as proposed in this study, proficiently traces the global maximum, thereby substantiating its practicality and efficiency.
Pemanfaatan serbuk biji pepaya dalam pengolahan air Sungai Manunggal Kota Yogyakarta
Authors: Kumalasari Vita
Published: May 2024

Berdasarkan data Dinas Lingkungan Hidup Kota Yogyakarta tahun 2021 air Sungai Manunggal Kota Yogyakarta termasuk dalam kategori cemar berat, dengan kandungan COD 31,14 mg/L, BOD 10,88 mg/L, nitrit 0,59 mg/L dan total coliform 6.325.000 MPN/100 mL pada titik pantau Jembatan Mangkukusuman. Hal ini menunjukkan bahwa kandungan COD, BOD, nitrit dan total coliform dalam air Sungai Manunggal melebihi baku mutu kelas II menurut Peraturan Gubernur DIY Nomor 20 Tahun 2008, sehingga jika akan digunakan harus dilakukan pengolahan terlebih dahulu. Kandungan senyawa aktif alkaloid, flavonoid, glikosida antrakinon, tanin, triterpenoid atau steroid, saponin dalam serbuk biji pepaya menjadikannya berpotensi sebagai biokoagulan dan desinfektan alami. Tujuan penelitian ini untuk mengetahui efektivitas dari serbuk biji pepaya pada konsentrasi 6 gr/L, 6,5 gr/L dan 7 gr/L dalam menurunkan kandungan COD, BOD, nitrit dan total coliform dalam sampel air Sungai Manunggal. Penelitian eksperimental ini menggunakan rancangan Pretest-Posttest Control Group Design, kemudian dihitung efisiensinya. Sampel air yang digunakan diambil dari Sungai Manunggal pada titik pantau jembatan Mangkukusuman Kota Yogyakarta. Dari hasil penelitian menunjukkan bahwa serbuk biji pepaya dengan dosis 6 gr/mL, 6,5 gr/mL dan 7 gr/mL efektif menurunkan kandungan nitrit dan total Coliform, tetapi tidak efektif menurunkan kandungan COD dan BOD dalam sampel air Sungai Manunggal Kota Yogyakarta.
Kata kunci : Biokoagulan; desinfektan; serbuk biji pepaya
Analisis efektivitas biaya terapi anemia pada pasien hemodialisis GGK di RS X
Authors: Purnomo Lenis Sufiya , Dewi Lucia Vita Inandha , Hanifah Inaratul Rizkhy
Published: May 2024

Pasien Gagal Ginjal Kronis (GGK) yang menjalani hemodialisis akan mengalami komplikasi anemia, maka membutuhkan terapi anemia yaitu terapi tunggal Asam Folat dan terapi kombinasi Asam Folat –Eritropoietin (EPO). Meskipun terdapat perbedaan dari segi biaya dan efektivitas, keduanya masih menjadi pilihan utama dalam pengobatan. Beberapa peneliti menyebutkan bahwa terapi kombinasi terbukti lebih efektif dari terapi tunggal. Penelitian ini bertujuan untuk mengetahui terapi mana yang lebih cost effective.Pengambilan data sudah dilakukan bulan Agustus 2023, dengan sampel pasien anemia yang terdiagnosa GGK dan sedang menjalani hemodialisis di bulan Januari-Desember 2022. Data diambil secara retrospektif dari rekam medis dan billing. Analisis efektivitas biaya dilakukan dengan menghitung biaya medis langsung, efektivitas terapi, nilai Average Cost Effectiveness Ratio (ACER) dan Incremental Cost Effectiveness Ratio (ICER) serta dilakukan analisis sensitivitas. Hasil penelitian menunjukkan terapi kombinasi Asam Folat-Eritropoietin (EPO) lebih efektif dengan persentase sebesar 53% dibandingkan dengan terapi tunggal Asam Folat sebesar 46%. Rata-rata biaya medis terapi tunggal sebesar Rp911.835,00 dan terapi kombinasi Asam Folat-Eritropoietin (EPO) sebesar Rp1.155.769,00 dengan nilai ACER Rp2.183.119,00. Maka disimpulkan terapi kombinasi paling cost effective dengan nilai ICER Rp3.593.961,00 per persen aktivitas.
Kata kunci: Anemia; asam folat; eritropoietin
Effect of Annealing Temperature on Mechanical Properties of AISI 1045 Carbon Steel
Authors: Moraida Hasanah  , Susilawati Susilawati , Zahar Intan , Mulyadi Yadi , Rahmadsyah Rahmadsyah
Published: May 2024

Research on the effect of of annealing temperature variations on the mechanical properties of AISI 1045 carbon steel has been conducted by varying the annealing temperatures. The samples used in this study had a diameter of 20 mm and a length of 30 mm. Since AISI 1045 steel is very important in the manufacturing industry, extensive research and development. This study aims to analyze the microstructure formed during the annealing process at different temperatures, to determine the impact of annealing temperature on the hardness values of AISI 1045 steel, and to evaluate the corrosion rate of the steel. The samples were heated in a furnace for 1 hour at temperatures of 250°C, 500°C, 750°C, and 1000°C. After removal from the furnace, the samples were returned to room temperature. Subsequently, hardness tests, corrosion rate tests, and microstructural observations were conducted using a Scanning Electron Microscope (SEM). The results indicated that a hardness of 119.3 HRC could be achieved at 500°C, and a corrosion rate of 0.0014 mm/y could be achieved at 1000°C. The values obtained from these tests, supported by the SEM observations, suggest that AISI 1045 carbon steel exhibits good mechanical properties after the annealing process.