bluuebunny/crossref_metadata_2025 huggingface dataset:
Flux and stable isotope fractionation of CO2 in a mesic prairie headwater stream
Authors: Norwood Brock S. , Stotler Randy L. , Brookfield Andrea , Sullivan Pamela L. , Macpherson G. L.
Published: May 2023

The carbon dioxide (CO2) fluxes from headwater streams are not well quantified and could be a source of significant carbon, particularly in systems underlain by carbonate lithology. Also, the sensitivity of carbonate systems to changes in temperature will make these fluxes even more significant as climate changes. This study quantifies small-scale CO2 efflux and estimates annual CO2 emission from a headwater stream at the Konza Prairie Long-Term Ecological Research Site and Biological Station (Konza), in a complex terrain of horizontal, alternating limestones and shales with small-scale karst features. CO2 effluxes ranged from 2.2 to 214 g CO2 m−2 day−1 (mean: 20.9 CO2 m−2 day−1). Downstream of point groundwater discharge sources, CO2 efflux decreased, over 2 m, to 3–40% of the point-source flux, while δ13C-CO2 increased, ranging from −9.8 ‰ to −23.2 ‰ V-PDB. The δ13C-CO2 increase was not strictly proportional to the CO2 flux but related to the origin of vadose zone CO2. The high spatial and temporal variability of CO2 efflux from this headwater stream informs those doing similar measurements and those working on upscaling stream data, that local variability should be assessed to estimate the impact of headwater stream CO2 efflux on the global carbon cycle.
methodological maintenance of teachers
Authors: Levcov Anton Nikolaevich
Published: May 2023

Methods of working with young teachers on the example of the experience of the IMC Krasnoselsky district of St. Petersburg
Redes (e cidades)
Authors: Savério Sposito Eliseu
Published: May 2023

Neste texto, o conceito de rede, em suas múltiplas determinações, é tratado, em termos histórico e etimológico, como rede geográfica, tendo como exemplo empírico e estruturante, a internet. Definida historicamente e com conteúdos que se transformam e se intensificam nas últimas décadas, a rede é enfocada, também, como rede urbana, no caso brasileiro, sem se esquecer de referências importantes como a globalização. A relação entre redes de cidades e cidades em rede é uma tentativa de expor uma interpretação teórica comparativa entre elementos que se complementam, contradizem e se interrelacionam. A utilização de mapas e gráficos propicia a visualização da internet em sua escala mais ampla e das redes geográficas como eventos empíricos.
TiO2 Nanoparticles in Cancer Therapy as Nanocarriers in Paclitaxel’s
Delivery and Nanosensitizers in Phototherapies and/or Sonodynamic
Therapy
Authors: Tonelli Fernanda M.P. , Tonelli Flávia C.P. , Cordeiro Helon G.
Published: May 2023

Nanomaterials have been offering improvements in different areas due to their unique
characteristics, but cytotoxicity associated with their use is still a topic that concerns researchers.
Causing cell death, at first glance, may seem to be a problem and the studies regarding signaling
pathways involved in this toxicity are still in their infancy. However, there are scenarios in which
this feature is desirable, such as in cancer treatment. Anti-cancer therapies aim to eliminate the
cells of malignant tumors as selectively as possible. From this perspective, titanium dioxide (TiO2)
nanoparticles (NPs) deserve to be highlighted as important and efficient tools. Besides being able
to induce cell death, these NPs can also be used to deliver anti-cancer therapeutics. These drugs
can be obtained from natural sources, such as paclitaxel (an antitumoral molecule derived from a
vegetal source). The present review aims to explore the recent knowledge of TiO2 NPs as nanocarriers
(promoting the nanodelivery of paclitaxel) and as nanosensitizers to be used in phototherapies
and/or sonodynamic therapy aiming to treat cancer. Signaling pathways triggered by this nanomaterial
inside cells leading to apoptosis (a desirable fate when targeting tumor cells) and challenges
related to the clinical translation of these NPs will also receive attention.
Conventional versus Aspiration-type Needles in CT-guided Biopsy for Chest
Pathologies/Lesions: A Comparative Study
Authors: Sekino Hirofumi , Ishii Shiro , Yamakuni Ryo , Suenaga Hiroki , Kuroiwa Daichi , Fukushima Kenji , Ito Hiroshi
Published: May 2023

Background:

Larger sample volume can be obtained in one needle pass using an aspiration-type semi-automatic cutting biopsy needle (STARCUT® aspiration-type needle; TSK Laboratory, Tochigi, Japan) in comparison to the conventional semi-automatic cutting biopsy needle.

Objective:

To evaluate and compare the safety and effectiveness of aspiration-type semi-automatic cutting biopsy needles and non-aspiration-type biopsy needles when performing computed tomography (CT)-guided core needle biopsies (CNBs).

Methods:

A total of 106 patients underwent CT-guided CNB for chest lesions between June 2013 and March 2020 at our hospital. Non-aspiration-type cutting biopsy needles were used in 47 of these patients, while aspiration-type needles were used in the remaining 59 patients. All needles used were 18- or 20-gauge biopsy needles. Parameters, like forced expiratory volume in 1-second percent (FEV1.0%), the maximum size of the target lesion, puncture pathway distance in the lung, number of needle passes, procedure time, diagnostic accuracy, and incidence of complications, were measured. Comparisons were made between the needle-type groups.

Results:

No significant difference was observed in terms of diagnostic accuracy. However, the procedure time was shorter and a lesser number of needle passes were required with the aspiration-type cutting biopsy needle compared to the non-aspiration-type needle. Pneumothorax and pulmonary hemorrhage were the complications encountered, however, their incidence was not significantly different between the two types of needles.

Conclusions:

The aspiration-type semi-automatic cutting biopsy needle had similar diagnostic accuracy as the non-aspiration-type biopsy needle, with added advantages of a lesser number of needle passes and shorter procedure time.
The Participation of Ca2+ Channels in Epilepsy: A Bibliometric Analysis
of the Scientific Literature in Latin America
Authors: Rubio Carmen , Gallardo Noel , Mena Vanessa , Portilla Alonso , Rubio-Osornio Moisés
Published: May 2023

Background:

Bibliometric analysis allows us to quantify and evaluate scientific activity,
and it has become increasingly important in all areas of scientific literature. Thanks to these analyses,
we can infer where science should put greater efforts into elucidating the underlying mechanisms of
diseases that have yet to be fully described or investigated.

Objective:

This paper delves into published articles related to the involvement of calcium (Ca2+) channels
in epilepsy, which is a condition with a high prevalence in Latin America.

Methods:

We followed the scientific publication on SCOPUS and analyzed the impact of publications
from Latin America in the field of epilepsy and the study of Ca2+ channels. We identified the countries
with the largest number of publications and found that 68% of them were experimental (animal models),
while 32% were clinical. We also identified the main journals, growth over time, and citation
numbers.

Results:

We found a total of 226 works produced by Latin American countries from 1976 to 2022.
The countries that have contributed the most to the topic are Brazil, Mexico, and Argentina, with occasional
collaborations between them to make contributions to the study of epilepsy and Ca2+ channels.
Additionally, we found that the journal with the most citations is Nature Genetics.

Conclusion:

The number of authors per article ranges from 1 to 242, and neuroscience journals are the
preferred target for researchers, with a predilection for publishing original articles, although 26% of
the publications are review articles.
Nanostructured Lipid Carriers for Targeting Central Nervous System:
Recent Advancements
Authors: Ojha Smriti , Mishra Sudhanshu
Published: May 2023

Background:

Lipid nanocarriers (NLCs) have undergone significant research over the past
two decades to determine how well they target drugs to important parts of the human body, such as the
central nervous system (CNS), the heart region, tumor cells, etc.

Objective:

The objective of this review paper was to review and critically summarize recent progress
in NLC for targeting CNS.

Methods:

The structure, classification, elements, and numerous preparation techniques have been carefully
outlined in this paper, along with their benefits and drawbacks, as demonstrated by several research
investigations.

Results:

This review focuses on recent developments in NLCs for brain targeting of bioactives with
special attention to their surface modifications, formulation aspects, pharmacokinetic behavior, and effectiveness
for treating a variety of brain disorders.

Conclusion:

Poorly water-soluble bioactive substances’ physicochemical properties and behavior,
such as aqueous dispersibility and oral bioavailability, can be greatly improved using lipid nanocarriers.
Due to the brain's complicated structure and numerous protective systems, drug distribution to the
brain has remained a difficult problem for scientists. The employment of an appropriate nanocarrier
technology and an alternate drug delivery method, such as nose-to-brain drug delivery, could overcome
the problem of brain targeting and increase the therapeutic effectiveness of CNS-acting medications.
The pharmaceutical business has recently transformed various innovative drug delivery methods
that address the drawbacks of conventional drug delivery systems and offer a good benefit-to-risk ratio.
Factors Influencing Adolescents’ Use of Social Media for Nutrition Intervention
Authors: Md Jamri Hazirah , Setiyaningrum Zulia , Abd Talib Ruzita , Buhari Siti Sabariah
Published: May 2023

Adolescents are the largest population using social media in daily life, and their use is influenced by a wide range of factors. Hence, it is applied in nutrition intervention, which improved their health. However, some intervention lacks participation and engagement. This study identifies factors influencing adolescents’ social media use for nutrition interventions. An in-depth interview was conducted virtually for 30 to 60 minutes focusing on nutrition-related matters with 15 adolescents. Almost all of them were interested to participate in nutrition interventions on social media. User characteristics, environmental factors, and social media features were identified as the factors impacting them.
Quality of Sleep Data Validation From the Xiaomi Mi Band 5 Against Polysomnography: Comparison Study
Authors: Concheiro-Moscoso Patricia , Groba Betania , Alvarez-Estevez Diego , Miranda-Duro María del Carmen , Pousada Thais , Nieto-Riveiro Laura , Mejuto-Muiño Francisco Javier , Pereira Javier
Published: May 2023

Background

Polysomnography is the gold standard for measuring and detecting sleep patterns. In recent years, activity wristbands have become popular because they record continuous data in real time. Hence, comprehensive validation studies are needed to analyze the performance and reliability of these devices in the recording of sleep parameters.

Objective

This study compared the performance of one of the best-selling activity wristbands, the Xiaomi Mi Band 5, against polysomnography in measuring sleep stages.

Methods

This study was carried out at a hospital in A Coruña, Spain. People who were participating in a polysomnography study at a sleep unit were recruited to wear a Xiaomi Mi Band 5 simultaneously for 1 night. The total sample consisted of 45 adults, 25 (56%) with sleep disorders (SDis) and 20 (44%) without SDis.

Results

Overall, the Xiaomi Mi Band 5 displayed 78% accuracy, 89% sensitivity, 35% specificity, and a Cohen κ value of 0.22. It significantly overestimated polysomnography total sleep time (P=.09), light sleep (N1+N2 stages of non–rapid eye movement [REM] sleep; P=.005), and deep sleep (N3 stage of non-REM sleep; P=.01). In addition, it underestimated polysomnography wake after sleep onset and REM sleep. Moreover, the Xiaomi Mi Band 5 performed better in people without sleep problems than in those with sleep problems, specifically in detecting total sleep time and deep sleep.

Conclusions

The Xiaomi Mi Band 5 can be potentially used to monitor sleep and to detect changes in sleep patterns, especially for people without sleep problems. However, additional studies are necessary with this activity wristband in people with different types of SDis.

Trial Registration

ClinicalTrials.gov NCT04568408; https://clinicaltrials.gov/ct2/show/NCT04568408

International Registered Report Identifier (IRRID)

RR2-10.3390/ijerph18031106
Increasing temperature and decreasing humidity were related to running speed in age group runners in ‘Berlin Marathon’ (Preprint)
Authors: Weiss Katja , Valero David , Villiger Elias , Scheer Volker , Thuany Mabliny , Aidar Felipe J , de Souza Raphael Fabricio , Cuk Ivan , Nikolaidis Pantelis , Knechtle Beat
Published: May 2023

BACKGROUND

The influence of environmental conditions on marathon running performance and pacing has been widely investigated among professional runners. However, environmental conditions' influence on recreational marathoners' pacing is less known.

OBJECTIVE

The aim of the present study was to investigate whether environmental conditions such as temperature, barometric pressure, humidity, precipitation, sunshine, cloud cover, wind speed and dew point are associated with the pacing of recreational marathoners for men and women.

METHODS

A total of 668,509 (520,521 men and 147,988 women) runners' records from ‘Berlin Marathon’ races between 1999 and 2019 were considered for analysis. Correlations and Ordinary Least Squares (OLS) regressions between time-adjusted averages for temperature, barometric pressure, humidity, precipitation, sunshine, cloud cover, wind speed and dew point, and race times and paces were investigated for performance groups in intervals of 00:30 h:min for race times between 02:30 h:min to 06:00 h:min and longer.

RESULTS

Both increasing temperature and decreasing humidity during the day were negatively related to running speed in recreational marathoners competing in the ‘Berlin Marathon’ where men were more affected than women. OLS showed, however, that the model can only predict 10% of the race pace with weather factors as predicting variables.

CONCLUSIONS

The susceptibility to temperature and humidity grew as the race progressed. Although weather affected running speeds and results, it was not a significant predictor of pacing. These findings can be used by coaches and athletes to better plan and control their hydration and running pace considering weather conditions.

CLINICALTRIAL

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The Effect of Road Conditions on Acacia mangium Timber Hauling Performance
Authors: Yuniawati Yuniawati , Andini Sarah
Published: May 2023

The quality of timber could be affected by timber hauling, primarily when it remained in the forest and became vulnerable to pests and fungi attacks. Additionally, road conditions could also influence the slickness of hauling. Therefore, this study aimed to identify the effect of road conditions on hauling performance, cost, and soil deterioration. This research analyzed four types of road conditions in Acacia mangium plantations in West Java and Banten, including dry, wet, uphill, and downhill roads. The results indicated that the average hauling performance of 6.604 m3km/hour on the uphill road was the least among all road types. The uphill soil road had the highest average hauling cost of 30,685 IDR/m3km and the deepest average rut of 17.503 cm compared to others. These results would provide better information on low-cost and environmentally friendly timber hauling productivity.
Road Access under Thirty Two Bridge Constructions in Karnali Highway: An Analysis of Socio-economic Impact in Community
Authors: Malla, PhD Dalip Kumar
Published: May 2023

The ground conditions of Nepal, road transport is not possible in all places. Without roads, development cannot accelerate and economic and social changes cannot occur. Construction of bridges to connect roads has become a very important issue. After the bridge is built on the road, the access of road transport to the settlements in those remote places becomes easier. It plays a role in making the daily life of the people living in that place easier as well as including the contribution of women in economic development. The bridge construction program is anticipating limited adverse impacts of land acquisition and resettlement confined to the area near the bridge works. Based on experience, adverse social impacts are likely to be temporary during the project work, such as temporary land leasing for the contractor operations. Access to the Bridge helps the beneficiaries. The construction provides a bridge, which provides for communities to access all weather. The bridge has accessibility, reducing travel time and improving access to economic centers and social services, whereas the community is easy for their livestock. They can easily market their agricultural products on the market. The impact of these bridges would increase the internal and external tourism market as well as assist those provinces. It is believed that after the construction of the bridge, the standard of living of the citizens living in that place will improve and the agricultural products produced by them will find the market easily. By saving time on the one hand and helping, in financial gain, on the other hand, the bridges constructed here will have a positive impact on the lives of the people.
Robust Transmission using Efficient Adaptive Modulation and Coding in Modern OFDM Systems
Authors: Patil Ameykumar Arunrao
Published: May 2023

Abstract: OFDM (Orthogonal Frequency Division Multiplexing) as a special multi-carrier transmission technology has good resistance to narrow-band interference and frequency selective fading ability. Using adaptive modulation and coding in an OFDM systems in comparison with traditional fixed modulation techniques, it becomes possible to take full advantage of spectrum resources enhancing bandwidth efficiency and system capacity making it suitable for the high-speed and reliable mobile communication systems in the future. In AMC (Adaptive Modulation and Coding) technique, modulation method, coding rate, and/or other signal transmission parameters are dynamically adapted to the channel conditions to increase the system performance in terms of Bit Error Rate (BER) and throughput (bps) in various conditions such as channel mismatch, Doppler spreads, fading, etc. The purpose of this paper is to investigate the effect of adaptive modulation and coding in an OFDM system in terms of bit error rate and SNR over fading communication channels. In this paper, we have considered fixed and adaptive modulation technique in an OFDM system over AWGN and RICEAN channel with convolutional and BCH coding. An OFDM system model is simulated in MATLAB programming environment to obtain the simulation result. From the comparative simulation result analysis in terms of BER v/s SNR, it can be concluded that Adaptive modulation with Convolutional coding over RICEAN channel significantly reduces bit error rate giving better trade-off between SNR and BER than all other options considered here.
Zebra Crossing Detection Using Concatenation of SIFT-Gabor Features
Authors: Madake Prof. Jyoti
Published: May 2023

Abstract: Zebra-crossing recognition is a challenging activity for visually impaired navigating safely. This paper proposes a zebra-crossing scene recognition model-based fusion of texture features and geometrical features. The Gabor features for 8 orientations are extracted for different orientations Zebra Crossing lines. The SIFT is employed for keypoint detection and description. The final features vector is obtained by concatenating Gabor and SIFT features. The feature vector is optimized using K-means clustering and Principle Component Analysis (PCA). The optimized feature vectors were classified using five Classifiers, SVM, Random Forest, Decision Tree, Naïve Bayes Classifiers. The proposed model successfully recognizes the crosswalks with 89% accuracy. The different classifier models are evaluated for Precision, Accuracy, F1 Score, Recall, and RoC. This paper specifies the classification of two class positive which is zebra-crossing and negative which is no zebra-crossing. The designed system will classify either the crosswalk is detected or not on the basis of percentage specified for each class. This can be done by matching the features of the trained dataset. Those features are matched with the real videos or images to recognize the motion and classify into specific class. More specific crosswalk detection in real time can be executed to get more specific type of positive and negative class and classification.
MediChain: Medical Record Management System
Authors: Katile Urvashi
Published: May 2023

Abstract: Currently, Electronic Health Records are managed using a client-server architecture by which healthcare providers retain data stewardship. But this strategy has problems with security and privacy, a single point of failure, fragmented data, and susceptibility. Blockchain is a brand-new, developing technology for distributed databases that uses cryptography to ensure the security, incorruptibility, and integrity of data. These characteristics allow secure and reliable data storage. Blockchain-based record management system uses smart contracts to ensure the privacy of patients. This health record management platform will store the user’s hospital, lab, pharmacy, and insurer records. It will increase the speed of information storing and exchange So that all patients can easily access individual medical records in different hospitals and clinics. This will help doctors and patients with diagnoses and also various insurance companies to check the medical records by getting access to records from the platform and also this will help the researchers and scientists.
Mood Music Recommendation Using Emotion Detection
Authors: Nand Rugwed
Published: May 2023

Abstract: The proposed mood music recommendation system leverages the power of deep learning and emotion detection technology to provide personalized and dynamic music recommendations to users. The system uses various modalities such as facial expressions, speech patterns, and voice tone to detect the user's emotional state. The system then recommends songs and playlists that are aligned with the user's mood, thereby enhancing their overall music listening experience. One of the key advantages of the proposed system is its adaptability to changes in the user's emotional state. As the user's mood changes, the system can dynamically adjust the music recommendations to ensure that the user is constantly provided with music that is appropriate to their current emotional state. This adaptability is crucial as emotions can be unpredictable and constantly changing. By providing music that is tailored to the user's current mood, the system can help them manage their emotions and improve their well-being Overall, the proposed system has the potential to revolutionize the music streaming industry by providing users with a highly personalized and dynamic music listening experience. The use of emotion detection technology and deep learning algorithms can help users manage their emotions and enhance their overall listening experience, thereby contributing to their overall well-being. The proposed system represents an exciting step towards the development of intelligent and adaptive music recommendation systems.
De la conjunción a la conexión. Los cambios de la comunicación y el poder en el semiocapitalismo
Authors: Samela Gabriela , Lenarduzzi Victor
Published: May 2023

Este artículo aborda los aportes teóricos de Franco Berardi sobre la comunicación en el contexto contemporáneo. A partir de las transformaciones culturales vinculadas a la digitalización se revisan los principales ejes que, desde la perspectiva del autor y en diálogo con otros autores, permiten repensar categorías básicas de las teorías de la comunicación. En primer lugar, se aborda el concepto de semiocapitalismo. Luego se analizan la expansión de los automatismos tecnosemióticos como aspecto decisivo del régimen de poder contemporáneo, caracterizado en términos de gobernanza. Finalmente, se recupera el encuadre de la comunicación enmarcado en la tensión entre “conjunción” y “conexión”. Así se daría, con el predominio de la segunda, la tendencia a la producción del “efecto enjambre”.
Procesamiento cognitivo de fake news políticas. Revisión de estudios experimentales
Authors: Paz García Pamela A. , Danieli Natalia E. , Moreano Freire Isaac E.
Published: May 2023

¿Qué son las fake news? ¿Cuáles son sus incidencias en la vida política contemporánea? ¿Por qué las personas son susceptibles —o no— a este tipo de informaciones? Manteniendo estas preguntas como eje, se propone una revisión sistemática de trabajos experimentales sobre susceptibilidad versus identificación de fake news políticas, publicados entre 2017 y 2022, en español, inglés y portugués. Se identifican como factores de susceptibilidad el bajo rendimiento del pensamiento analítico, la congruencia ideológica y los escenarios de confianza (noticias compartidas), mientras el pensamiento analítico de alto rendimiento, el conocimiento político, el tiempo de deliberación, y las fuentes y formatos periodísticos más institucionalizados funcionan con frecuencia como factores de discernimiento. Se aborda la necesidad de seguir avanzando en la creación y divulgación de estrategias efectivas para que la ciudadanía pueda distinguir la veracidad de la información política que consume, dada su importancia para la vida democrática.
Pensar en irse o en volver, en las alturas de La Habana. Análisis de las películas Regreso a Ítaca (2014) y El techo (2016)
Authors: Castro Avelleyra Anabella
Published: May 2023

Un personaje sueña con irse y el otro piensa en volver. Los separa la edad, la experiencia vital y su capacidad para habitar el pasado o el futuro. Los une la migración, el destino insular y una azotea. Este artículo se propone realizar un análisis de las películas Regreso a Ítaca (Laurent Cantet, 2014) y El techo (Patricia Ramos, 2016) que contemple cómo determinados aspectos narrativos, estéticos y de puesta en escena contribuyen a la configuración de imaginarios en torno a los procesos migratorios e identitarios. Con este fin, se recuperarán algunas reflexiones teóricas en torno a cuestiones como los imaginarios sociales, el cine y lo transnacional, y se estudiará la construcción de personajes y la configuración de cronotopos en el texto fílmico.
La investigación como responsabilidad docente. Un análisis de las políticas educativas en Colombia y Chile
Authors: Palencia Salas Viviana , Verdugo Peñaloza Alejandro
Published: May 2023

La investigación docente se ha convertido en un deber, una responsabilidad y un desafío en el quehacer educativo. Por ello, el objetivo de este estudio es analizar en las políticas educativas los propósitos y las condiciones para implementar la investigación en la labor docente y en la formación inicial en Chile y Colombia. Enmarcada en el enfoque cualitativo, se realizó un análisis documental en el que se revisaron 11 documentos. Los resultados obtenidos demostraron como responsabilidad docente en ambos países: la labor de investigar sobre su práctica y la disciplina que se enseña, así como el fomento del desarrollo de habilidades investigativas en los estudiantes de todos los niveles del sistema educativo. En Colombia se menciona con mayor detalle las condiciones para incentivar la investigación docente, mientras que en Chile no se expone en profundidad la acción de investigar, pero sí se resalta la reflexión y la innovación.
2 Decades of Poverty Reduction and Partnership: The Story of the Japan Fund for Poverty Reduction, 2000–2021
Authors:   Asian Development Bank
Published: May 2023

本書では、ADBの開発途上加盟国において、総額10億ドルを超える、合計520ものプロジェクトを支援してきたJFPRの歩みを紹介しています。その中で、インド洋大津波や新型コロナウイルス感染症パンデミックのような危機に際してJFPRが果たした重要な役割や一貫した貧困削減への取り組み、地域社会における強靭性構築への貢献を知ることができます。
Numerical simulation of nanofluid flow due to a stretchable rotating disk
Authors: Ayano Mekonnen , Otegbeye Olumuyiwa , Mathunjwa Jochonia
Published: May 2023

In this study, a steady magnetohydrodynamic (MHD) flow due to stretchable rotating disk in the presence of gyrotactic microorganisms is investigated. The governing equations modeling the flow are solved numerically using the newly introduced simple iteration method (SIM) that seeks to linearize a system using relaxation technique that effectively decouples the system. To verify the convergence and accuracy of the method, solution error and residual error analysis are carried out, respectively. The obtained results suggest that the SIM is a highly efficient method that produces convergent and highly accurate solutions. The effects of various parameters as well as combined parameter effects on the solution profiles are also investigated. An increase in the Hall and permeability parameters leads to a corresponding rise in the microorganism?s density and nanoparticle volume fraction.
PENGEMBANGAN INSTRUMEN KETERAMPILAN BELAJAR DAN BERINOVASI (4C) PADA PEMBELAJARAN IPA SISWA KELAS V SD
Authors: N.L.R.A. Dewi  , I.W. Lasmawan  , I.K. Gading
Published: May 2023

Penelitian ini bertujuan untuk mengembangkan instrumen asesmen keterampilan belajar dan berinovasi (4C) pada mata pelajaran IPA Kelas V SD. Penelitian ini merupakan penelitian pengembangan dengan menggunakan model ADDIE. Data yang dikumpulkan berupa data relevansi indikator dengan variabel dan relevansi item dengan indikator serta kepraktisan instrument asesmen keterampilan belajar dan berinovasi (4C).  Data tentang relevansi indikator dengan variabel  dan relevansi item dengan indikator diperoleh dari 2 orang ahli. Data kepraktisan diperoleh dari 3 praktisi yang berasal dari guru kelas V SD. Data dianalisis dengan formula Gregory.  Hasil analisis menunjukkan bahwa: 1) Karakteristik instrumen asesmen keterampilan belajar dan berinovasi (4C) terlihat pada komponen, bentuk,tampilan dan materi tes yang digunakan. 2) Nilai  rata-rata CV sebesar 1 yang berarti nilai validitas sangat tinggi. 3) Nilai rata-rata kepraktisan instrument adalah 4,83 yang terkategori sangat praktis. Dengan demikian, produk yang berupa instrumen asesmen keterampilan belajar dan berinovasi (4C) pada pembelajaran IPA kelas V SD layak digunakan.
PENGEMBANGAN PERANGKAT PEMBELAJARAN IPA BERORIENTASI HOTS PADA SISWA KELAS V SD
Authors: I.G. Surya  , I.B.P. Arnyana  , I.G. Margunayasa
Published: May 2023

Penelitian dan pengembangan ini bertujuan untuk: (1) memperoleh instrumen hasil belajar IPA dan sikap toleransi siswa kelas IV SD yang valid dan reliabel pada Gugus X Kecamatan Kintamani. Penelitian ini menggunakan rancangan penelitian pengembangan. Model pengembangan yang digunakan adalah model pengembangan 4D yaitu define, design, develop, and disseminate. Namun tahap disseminate tidak dilakukan diakibatkan oleh terjadinya sebuah pandemi Covid19. Pada tahap define, dilakukan penyusunan kisi-kisi instrumen hasil belajar IPA dan sikap toleransi. Pada tahap design, kisi-kisi tersebut dijabarkan menjadi butir instrumen. Pada tahap develop, dilakukan uji validitas isi (content) dengan teknik Lawshe untuk menghitung Content Validity Ratio (CVR) dan uji reliabilitas oleh validator. Untuk menguji instrumen hasil belajar IPA menggunakan rumus KR20 sedangkan instrumen sikap toleransi menggunakan rumus Alpha Cronbach. Subjek penelitian melibatkan dua orang dosen ahli dan tiga orang rekan guru kelas IV yang berperan sebagai validator. Hasil penelitian ini menunjukkan bahwa instrumen hasil belajar IPA dengan bentuk tes pilihan ganda yang berjumlah 20 butir soal dinyatakan valid dan reliabilitas dengan nilai α = 0,72. Hasil instrumen sikap toleransi siswa dengan bentuk angket yang berjumlah 25 butir pernyataan dinyatakan valid dan reliabilitas dengan nilai r11 = 0,83.
PENGEMBANGAN E-LKPD BERBASIS LIVEWORKSHEET UNTUK MENINGKATKAN KEMAMPUAN BERPIKIR KRITIS PADA PEMBELAJARAN IPA TEMA SUMBER ENERGI KELAS IV SD
Authors: K.L.S. Utami  , I.W. Suastra  , N.K. Suarni
Published: May 2023

Penelitian ini bertujuan untuk mengetahui rancang bangun E-LKPD berbasis liveworksheet dalam meningkatkan kemampuan berpikir kritris pada pembelajaran IPA tema Sumber Energi kelas IV SD serta teruji validitas, kepraktisan dan efektifitasnya. Desain penelitian ini menggunakan modelpengembangan ADDIE yang terdiri dari 5 fase, yaitu analyze, design, developmen, implementation dan evaluation. Validasi dilakukan oleh dua dosen ahli, 3 guru kelas IV dan 60 siswa kelas IV untuk uji coba lapangan. Data dikumpulkan dengan metode kuisioner dan tes. Jenis kuesioner yaitu kuesioner validitas dan kuesioner kepraktisan. Instrumen tes yang digunakan berupa tes objektif. Teknik analisis yang digunakan adalah analisis validitas dan realibilitas instrument, analisis kepraktisan E-LKPD dan analisis efektifitas E-LKPD. Hasil penelitian pada instrumen pertama yaitu pengembangan E-LKPD dengan instrumen sebanyak 20 butir soal yang valid. Selanjutnya dilakukan analisis uji validitas isi untuk instrumen kemampuan berpikir kritis IPA pada 60 siswa kelas IV SD. E-LKPD berbasis liveworksheet yang dikembangkan secara umum terkategori sangat valid dengan skor rata-rata 3,75. Uji reliabilitas pada instrument yaitu r = 0,876 (tinggi). Kepraktisan E-LKPD menunjukan hasil yang praktis dan efektif. Efektivitas E-LKPD dilakukan 60 siswa menggunakan desain penelitian pretest dan posttest. Uji t –test 60 siswa kelas IVA dan IVB menunjukkan adanya perbedaan yang signifikan antara rata-rata nilai sebelum perlakuan kelas IVA sebesar 27,50 dan IVB sebesar 16,17  dengan rata-rata nilai sesudah perlakuan. Sebagai pembanding pretest dan posttest menggunakan KKM sekolah untuk mata pelajaran IPA yaitu 65.
EFEKTIVITAS PENGEMBANGAN E-LKPD DALAM UPAYA MENINGKATKAN MOTIVASI BELAJAR MATERI TEMATIK SISWA KELAS V SEKOLAH DASAR
Authors: N.W.B. Artini  , N.K. Suarni  , D.P. Parmiti
Published: May 2023

Penelitian ini bertujuan untuk 1) menghasilkan karakteristik e-LKPD, 2) mengetahui validitas  e-LKPD, 3) mengetahui kepraktisan e-LKPD, 4) menganalisa tingkat keefektivan e-LKPD materi tematik Subtema Manusia dan Lingkungan bagi siswa sekolah dasar. Jenis penelitian pengembangan dengan menggunakan model pengembangan 4D. Sampel penelitian diambil dengan teknik simple random sampling yang berjumlah 60 yang dibagi menjadi kelompok kontrol dan eksperimen. Data dikumpulkan melalui observasi, instrumen uji ahli, dan kuesioner motivasi belajar serta pre-test dan  posttest. Teknik analisis data secara kualitatif dan kuantitatif. Hasil penelitian menunjukkan bahwa pengembangan e-LKPD merupakan salah satu strategi pembelajaran yang dapat diterapkan sebagai solusi meningkatkan efektivitas dan motivasi sesuai dengan karakteristik peserta didik. Oleh karena itu, dapat disimpulkan bahwa e-LKPD cukup efektif meningkatkan hasil posttest dan motivasi belajar siswa sehingga perlu dikembangkan.
PENGEMBANGAN BUKU CERITA BERGAMBAR BERMUATAN PENDIDIKAN KARAKTER UNTUK MENINGKATKAN KEMAMPUAN MEMBACA PADA SISWA KELAS II SD
Authors: K.M.A. Dwiyasari  , I.B.P. Arnyana  , I.G. Astawan
Published: May 2023

Penelitian ini bertujuan untuk mengenghasilkan media pembelajaran Buku cerita bergambar bermuatan Pendidikan karakter yang valid, praktis dan efektif untuk meningatkan kemampuan membaca siswa kelas II Sekolah Dasar. Penelitian ini merupakan penelitian pengembangan (Research and Development) dengan mengadaptasi model pengembangan ADDIE. Data dikumpulkan dengan instrumen berupa kuesioner dan tes hasil belajar. Data validitas produk diuji oleh 2 ahli media,  2 ahli bahasa,  2 ahli materi menggunakan lembar kuesioner, uji kepraktisan guru kelas II SD sebanyak 5 orang dan 11 siswa menggunakan lembar kuesioner. Pengujian efektivitas dilakukan oleh 30 siswa menggunakan desain one group pretest-posttest dengan tes pilihan ganda. Data dianalisis secara kualitatif dan kuantitatif. Hasil penelitian menunjukkan bahwa media buku cerita bergambar bermuatan pendidikan karakter untuk meningkatkan kemampuan membaca siswa kelas II Sekolah Dasar dinyatakan (1) valid ditinjau dari aspek media pembelajaran dengan hasil 95%, materi pembelajaran SD dengan hasil 97,24%, dan Bahasa dengan hasil 93,33% ; (2) praktis ditinjau dari perspektif praktisi (guru) dan peserta didik dengan diperolah hasil 100% sangat praktis; (3) efektif dalam meningkatkan kemampuan membaca peserta didik dengan hasil uji t menunjukkan bahwa perbedaan rata-rata = -16.000 dengan simpangan baku = 8,242 dan galat baku rata-rata = 1,505. Nilai t = -10,633 dengan Sig. (2-tailed) = 0,000. Karena 0,000 < 0,05 maka dapat dinyatakan bahwa H0 ditolak. Dengan hal tersebut dapat disimpulkan bahwa terdapat peningkatan kemampuan membaca siswa kelas II SD N 1 Banyuning sebelum dan sesudah dibelajarkan menggunakan buku cerita bergambar bermuatan pendidikan karakter.
Problems Implementing Academic Supervision in Pandemic and New Normal Period in Senior High School
Authors: Menda Febi Eldami , Yari Dwikurnaningsih
Published: May 2023

Implementing academic supervision in schools has yet to be carried out optimally. Supervisors still need to follow up on the results of supervision. This research aims to analyze the problem of implementing academic supervision during the pandemic and the new normal. This type of research is qualitative. The research subjects were school principals and teachers. Data was collected through interviews, open questionnaires, FGDs, and documentation studies. The data analysis technique uses descriptive qualitative analysis. The results of this study indicate that during the pandemic academic supervision activities could not be carried out due to the problem of unsupported internet access, teachers' ability to operate IT was still low, especially teachers who were age adrift and school principals did not know for sure the mechanisms for implementing online supervision. In the new normal period, the problem with this academic supervision activity was that the preliminary meeting stage was sometimes not carried out, so teachers were usually given a sudden schedule of supervision activities, academic supervision activities had not used a variety of approaches and methods, and follow-up supervision had not been carried out. It was concluded that during the pandemic and new normal, the implementation of supervision still experienced problems that needed to be of concern to the school principal so that in the future, the implementation of supervision could be carried out more optimally.
Autopercepção dos efeitos de um treinamento de comunicação oral em situações de fala em público
Authors: Batista Denis de Jesus , Conceição Aline Santos da
Published: May 2023

Introdução: os treinamentos para o desenvolvimento da comunicação oral podem melhorar a autopercepção da fala e da voz, principalmente, em situações de fala em público. Objetivo: descrever a autopercepção dos efeitos de um treinamento para a comunicação oral dos locutores de uma rádio universitária em situações de fala em público. Método: este é um estudo antes e após intervenção. Foi aplicado o Programa de Desenvolvimento da Expressividade para Comunicação Oral em oito locutores durante oito encontros de duas horas de duração. O questionário de Autoavaliação das Habilidades de Voz e Fala em Diversos Contextos Comunicativos foi aplicado no primeiro e no último encontro. Resultados: a amostra constituiu-se, majoritariamente, por mulheres jovens, solteiras e estudantes, que trabalhavam por meio período durante três dias. As situações de fala em público que no início do treinamento ocorriam eventualmente passaram a ser mais frequentes. Houve redução nos sintomas de nervosismo, ansiedade, preocupação e confusão no conteúdo durante o discurso. A percepção de tremor e quebras na voz reduziram, e o sintoma de fala mais rápido aumentou. Houve relato prévio de que os interlocutores avaliavam a sua dicção variável com a situação, e ao final, afirmaram que era igual ao habitual. No término, segundo eles, as pessoas avaliavam a sua comunicação como boa. Conclusão: o treinamento resultou discretamente na autopercepção positiva para organização do discurso e nos sintomas de desvios vocais e alterações na fala dos locutores.
Percepções dos pais acerca da participação e comunicação de seus filhos com paralisia cerebral não oralizados
Authors: Rezende Ana Carolina Franzolin Araujo , Passos Paula Mello P. , Chun Regina Yu Shon
Published: May 2023

Introdução: O conhecimento das percepções de familiares acerca da participação e comunicação de seus filhos com PC (Paralisia Cerebral) não oralizados contribui com processos educacionais e terapêuticos centrados na pessoa e na família. Objetivo: Conhecer aspectos da participação e comunicação de crianças e adolescentes com PC não oralizados, bem como fatores que favorecem ou dificultam o uso da CSA (Comunicação Suplementar e/ou Alternativa) no ambiente familiar e na escola. Método: Estudo descritivo e transversal de abordagem qualitativa, com amostra de cinco mães de alunos com PC não oralizados. Resultados: As mães relatam barreiras à participação de seus filhos e reconhecem a importância da comunicação nas interações e nas atividades familiares. Mencionam, também, não terem alcançado uso funcional da CSA, em casa, mas expressam satisfação com o nível de comunicação que têm com seus filhos. Por outro lado, abordam dificuldades de comunicação quando não identificam os desejos de seus filhos ou quando eles estão com outros interlocutores. Conclusão: Os achados evidenciam participação reduzida das crianças e do adolescente do estudo, e pouco, ou nenhum uso da CSA. Diante das dificuldades relatadas pelas participantes, os achados reforçam a necessidade de equipar os familiares, no sentido de promoverem a participação e a comunicação de seus filhos. Reforça-se a importância de profissionais de CSA e professores de educação especial trabalhar em parceria com os familiares, a fim de expandir as maneiras como interagem e se comunicam com seus filhos, e vice-versa, visando uma maior participação dos mesmos.
Kesantunan dalam percakapan film garis waktu Karya Fiersa Besari
Authors:   Universitas Tidar, Cahyaningtyas Ratna , Astuty Astuty ,   Universitas Tidar, Herpindo Herpindo ,   Universitas Tidar
Published: May 2023

The research entitled "Politeness in Conversation from Fiersa Besari's Garis Waktu Film" is motivated by the occurrence of misunderstandings between speakers and speech partners, causing speech participants to feel offended by the speech received. This is because the speech participants pay less attention to matters relating to the principle of language politeness. The gap between this research and other research is that this research examines compliance and violation based on the six maxims of language politeness according to Leech and analyzes the compliance and violation from the point of view of the speech partner's acceptance as a measure of whether the speech conveyed by the speaker complies with or violates the principle of language politeness based on Yule's 'face' theory. This study aims to obtain a description of the form of compliance and violation of the principle of language politeness in the conversation of the movie Timeline by Fiersa Besari. The method used is descriptive qualitative. The researcher uses the listening method followed by the note-taking technique to collect data, while to analyze the data the researcher uses the commensurate method followed by the Pilah Elemen Penentu (PUP) technique. The result of this research shows 46 data. All data are divided into 31 data of the principle of language politeness compliance which includes maxims (1) praise, (2) generosity, (3) humility, (4) sympathy, and (5) agreement. Then 15 data of violations of the principles of language politeness which include maxims (1) praise and (2) agreement. The results of this study can be applied in class VIII learning with KD 3.16. This research only focuses on the compliance and violation of the principles of language politeness in the conversation of the movie Timeline, further researchers can develop an analysis of the causal factors and language politeness strategies. Keywords: context, form of speech, politeness principles
Ethical issues of pharmacotherapy and clinical trials in patients with dementia
Authors: Kazakov AS , Zyryanov SK
Published: May 2023

Dementia raises many ethical issues associated with stages of dementia such as the appearance of preclinical and asymptomatic patients who are, however, at risk of dementia. Thus, physicians come across ethical issues about preventive measures, disclosure of risks and protection from stigmatization and discrimination. Despite efforts to prevent dementia, it is also necessary to solve ethical issues related to the study of ways to alleviate the symptoms of clinical dementia, with the need for additional protection of patients with dementia when prescribing pharmacotherapy. One of the possible ways to solve these issues should be to use an integrated approach to conducting clinical trials and analyzing the ethical, legal and social consequences of dementia, for which it is necessary to include the collection of ethics-related data in the design of the dementia study itself.
Análisis comparativo de modelos de propagación en la telefonía móvil en la banda de 1900 MHz (LTE) a través de mediciones de campo eléctrico en la ciudad de Ambato
Authors: Flores Nuñez Anthonny , Moreno Hugo , Ribadeneira Jefferson , Moreno Avilés David
Published: May 2023

El presente artículo ofrece un análisis comparativo de los modelos de propagación Hata Extendido, SUI con factor de corrección de frecuencia y Ericsson 9999, en los sistemas de telefonía móvil que operan en la banda de 1900 MHz (LTE) a través de mediciones de campo eléctrico con la finalidad de establecer una recomendación de un modelo de propagación existente que se ajuste a las características del casco urbano de la ciudad de Ambato. Inicialmente se ubicaron cinco estaciones base, luego se escogieron dos estaciones base que trabajan en la banda y tecnología antes mencionada. Posteriormente se trazaron 4 limites radiales en los alrededores de las estaciones base y se realizaron 4 campañas de mediciones de campo eléctrico con el equipo Narda SRM-3006 en un total de 48 puntos por 6 minutos por punto. Además, se determinó las coordenadas de los puntos de medición mediante el equipo Spectra Precision Mobile Mapper 50 donde se obtiene las distancias y alturas de terreno con gran precisión, con los datos recolectados se realizó el cálculo de las pérdidas de propagación para la obtención del campo eléctrico teórico de cada modelo de propagación. Para evaluar qué modelo se ajusta más a las mediciones se realizó una comparación de valores de campo eléctrico medido con respecto a los valores de campo eléctrico teórico de cada modelo, mediante una comparación del RMSE. Finalmente se concluyó que el modelo SUI con factor de corrección de frecuencia es el que tiene mejor ajuste al entorno urbano de la ciudad de Ambato.