21st Century Research Articles

StudyNotion - An Edtech Website

In an era defined by rapid technological advancement, education stands as a crucial arena ripe for transformation. Our Edtech website emerges as a beacon of innovation, aiming to revolutionize traditional learning paradigms through the seamless integration of cutting-edge technology. With a multifaceted approach, our platform offers a comprehensive suite of tools and resources tailored to meet the diverse needs of students, educators, and institutions alike. At the heart of our platform lies a commitment to accessibility and inclusivity, ensuring that learning opportunities transcend geographical boundaries and socioeconomic barriers. Through interactive modules, engaging content, and personalized learning pathways, we empower learners to cultivate their intellectual curiosity and unlock their full potential. For educators, our platform serves as a dynamic hub for professional development, fostering collaboration, and knowledge sharing within a vibrant community of practice. From virtual classrooms to collaborative project management tools, we provide the scaffolding necessary to facilitate effective teaching in the digital age.Furthermore, our platform harnesses the power of data analytics and artificial intelligence to deliver actionable insights and personalized recommendations, facilitating data-driven decision-making and enhancing learning outcomes. In essence, our Edtech website represents more than just a digital learning platform; it embodies a vision for the future of education—one where technology serves as a catalyst for empowerment, innovation, and lifelong learning. Join us on this transformative journey as we redefine the possibilities of education in the 21st century and beyond. This abstract succinctly captures the essence of the Edtech website, highlighting its goals, features, and the transformative potential it holds for education.The abstract for the Edtech Website project encapsulates the endeavor to create an innovative educational platform tailored for diverse learners. This project aims to develop a user-friendly website offering interactive learning resources, personalized study tools, and collaborative features. Key objectives include providing seamless navigation, curating diverse educational content, implementing adaptive learning algorithms, and fostering real-time collaboration among students and educators. Emphasizing scalability, compatibility, and security, the website seeks to empower learners globally with accessible, engaging, and personalized learning experiences, ultimately fostering academic excellence and lifelong learning opportunities.

The Influence of Learning Models cooperative Make a Match type and media based Canva app against level HOTS thinking of students

Build existence The Indonesian nation with character in the 21st century is challenge for Indonesian nation. This model help student understand material in a way effective through card answers and games ask answer so that learning become more fun and not boring. Formulation problem is there is influence of learning models cooperative type Make a Match against level think HOTS students in the eyes social studies class IV Gugus RA Kartini, Bumi Raya District, Regency Morowali, Is there is media- based influence Canva app against level think HOTS students in the eyes social studies class IV Gugus RA Kartini, Bumi Raya District, Regency Morowali. Research purposes Analyze influence of learning models cooperative Make a Match type against level think HOTS students in the eyes social studies class IV Gugus RA Kartini, Bumi Raya District, Regency Morowali, Analyzing media- based influence Canva app against level think HOTS students in the eyes social studies class IV Gugus RA Kartini, Bumi Raya District, Regency Morowali. method study experiment is method research conducted​ with experiment, which is used For know influence variable independent ( treatment ) towards variable dependent ( result ) in controlled conditions.​ Research result Analysis statistics descriptive aim For describe achievement results Study so that known HOTS thinking level of students with apply the learning model cooperative Make a Match type in class experiment and use application media Canva- based classes control.

Państwowość zachodnioukraińska 1918–1923 oraz teorie losowości XX – początku XXI wieku

In the article author focused on the understudied and disputable aspects of the Ukrainian Revolution of 1914–1923, mainly on how Western Ukrainian statehood was established and developed in 1918–1919, as well as some specific issues of the political history of the West-Ukrainian People’s Republic (WUPR) in 1918–1923. By applying the theories of randomness introduced by scientists in the 20th – early 21st centuries (generally, Nassim Nicholas Taleb, Michele Wucker, Peter Grassberger, Edward Lorenz), the author puts forward an approach to the events of the early 20th century Ukrainian history, which is completely different to what has been suggested before, in its “Galician” form.

The “Finance‐Extraction‐Transitions Nexus”: Geographies of the Green Transition in the 21st Century

The “<scp>Finance‐Extraction‐Transitions</scp> Nexus”: Geographies of the Green Transition in the 21^st Century

Predictive Analysis of use of AI-Driven GPTs in Nanomaterials Research Breakthroughs in the 21st Century

Purpose: The 21st century has seen an unprecedented surge in nanomaterials research, driven by conventional scientific approaches and the advent of potent AI-based tools. This paper focus on comparative analysis, scrutinizing the trajectory of nanomaterial breakthroughs achieved with and without the integration of AI-based Generative Pre-trained Transformers (GPTs). Historically, advances in nanomaterials have occurred during several historical periods, characterized by the discovery of materials like carbon nanotubes, metamaterials, and self-assembling nanostructures. These turning points, which depended on simulations and testing, influenced a variety of fields, including materials science, electronics, and medicine. On the other hand, the age enabled by AI-based GPTs saw a rapid improvement in fields such as artificial intelligence (AI) assisted material design, predictive simulations, automation of synthesis processes, and the development of self-learning nanomaterials and AI-driven nanorobots. Methodology: This paper uses exploratory research methodology to analyse, compare, evaluate, interpret, and create new knowledge to address the use of AI-Driven GPTs in Nanomaterials Research Breakthroughs in the 21st Century by collecting relevant information using appropriate keywords through Google, Google scholar, and AI-driven GPT search engines. Analysis &amp; Discussion: When comparing the timelines, research procedures, and material design were significantly expedited by the inclusion of AI-based GPTs. In addition to accelerating discoveries, automation and AI-driven approaches reduced research expenses, which may democratize access to nanotechnology. These GPTs delved into uncharted chemical territory, discovering new compounds with uses in electronics, energy, and medicine. However, issues with data accessibility, bias in AI models, and moral questions about self-learning nanomaterials continue to be crucial topics that demand close attention in order to make responsible and fair progress. Originality/Value: AI-based GPTs stand as transformative catalysts in nanomaterials research, complementing traditional methodologies. While their integration promises accelerated progress, the responsible and beneficial evolution of AI-powered nanotechnology mandates addressing challenges related to data, bias, and ethical implications for a sustainable future in this burgeoning field.

A Machine Learning Approach for Detection and Classification of Colon Cancer using Convolutional Neural Network Architecture

In both developing and developed countries, cancer has become one of the most fearsome health ailments in the 21st century. Among the different variants of cancer, colon cancer is the 3rd most prevalent cancer globally and the 2nd deadliest form of cancer. Early diagnosis is very critical for the successful treatment of colon cancer. In recent times, machine-learning approaches have made significant strides in IoT-assisted healthcare systems. Computer-aided diagnostic systems driven by deep learning algorithms can detect colon cancer with great accuracy, assisting the medical profession in quick diagnosis and developing quick remedies against it. In our approach, we have developed a deep learning model based on convolutional neural network architecture to accurately classify and detect colon cancer. The developed model has been trained with 10,000 histopathological images of the colon, divided into two classes: colon adenocarcinoma and colon benign tissues, each containing 5000 images. We have also employed various performance metrics in our research to monitor the performance of our machine-learning model. The proposed model has been trained for 30 epochs with a batch size of 32 and achieved an overall accuracy of 98.79%.

Cytopathology: From its humble beginnings to the birth of the cytopathology fellowship.

Cytopathology or cytology as a field has grown remarkably in the 20th and 21st centuries with recent advances shaping the way we train our future colleagues and how we currently practice. This article explores the history of cytopathology tracing back as early as the 18th century with focus on the birth of the cytopathology fellowship in the United States.

Keterampilan Berpikir Kritis Buku Ensiklopedia Famili Malvaceae Melalui Penelitian Pengembangan

The 21st century is called the information century for all aspects of life. One of the abilities that 21st century education must have is critical thinking. Statistics on critical thinking abilities of biology students show that these abilities are still lacking. The use of teaching materials is one method for training critical thinking skills. The Encyclopedia Book is an instructional resource created during this project. To improve the quality of a product developed in the form of an encyclopedia, development research is needed. Seven types of plants from the Malvaceae family which are often found in the Banua Botanical Gardens are included in the encyclopedia created. The EDR (Educational Design Research) research method was applied in the study of making this encyclopedia. In terms of developing students' critical thinking skills, the results of the expected effectiveness test are in the good category with a total average score of 76.3%, while actual effectiveness is in the very good category with a total average score of 87.13%. This is suitable for use as a teaching tool both in theory and practice.

Recent and projected changes in climate patterns in the Middle East and North Africa (MENA) region

Observational and reanalysis datasets reveal a northward shift of the convective regions over northern Africa in summer and an eastward shift in winter in the last four decades, with the changes in the location and intensity of the thermal lows and subtropical highs also modulating the dust loading and cloud cover over the Middle East and North Africa region. A multi-model ensemble from ten models of the Coupled Model Intercomparison Project—sixth phase gives skillful simulations when compared to in-situ measurements and generally captures the trends in the ERA-5 data over the historical period. For the most extreme climate change scenario and towards the end of the twenty-first century, the subtropical highs are projected to migrate poleward by 1.5°, consistent with the projected expansion of the Hadley Cells, with a weakening of the tropical easterly jet in the summer by up to a third and a strengthening of the subtropical jet in winter typically by 10% except over the eastern Mediterranean where the storm track is projected to shift polewards. The length of the seasons is projected to remain about the same, suggesting the warming is likely to be felt uniformly throughout the year.

Scientific Study of Brassinosteroids on Production of Fruit Crops: A Review

Brassinosteroids (BRs) are considered as the sixth group of plant growth regulators with significant growth promoting activity in many horticulture and agriculture crops. This phytohormone was discovered from the pollen of Brassica napus L. on the basis of their ability to promote growth. Currently, more than 70 BRs have been isolated from different plant species, but only three viz., Brassinolide (BL), 24-Epibrassinolide (EBL) and 28-Homobrassinolide (HBL) are found to be the most biologically active forms and extensively used in various crops. They are eco-friendly, effective at very low concentration, cost effective and almost always have synergetic effect when interacts with other phytohormones. Owing to diverse physiological roles and cross talk with other hormones influence on plant growth and development, they are being collectively referred as ‘pleiotropic phytohormone’. Although, BRs were discovered towards the end of twentieth century, but the dynamic applications and outcomes were reported mainly during the inception of twenty first century, hence BRs were termed as ‘hormone of the twenty-first century’. The application of BRs at different growth stages have been reported to positively influences such as nutrients uptakes, growth, yield and quality attributes on many fruit crops which includes tropical, sub-tropical and temperate fruit crops at very low concentrations have great roles in terms of growth, yield, fruit quality and stress tolerance mechanisms, which results to lucrative adventure of farming community. This review article will provide an elucidated insight into the application of BR in different fruit crops.

Cultural Sociology in Mexico: Meaning-Making as Hybridization, Power, and Cultural Structure

This article analyzes how, at a very early stage, Mexican cultural sociologists explained meaning-making processes using a set of factors external to the cultural sphere and how, more recently, they have emphasized that such meaning-making processes have analytical autonomy. Mexican cultural sociology is marked by a dominant model based on the works of Gramsci, Bourdieu, and the Birmingham School that was built in the late 1970s; this model was derived from the analysis of cultural consumption and reached the peak of its development in the 1990s with the concept of cultural hybridization and efforts to introduce semiotics into cultural interpretation. At the beginning of the 21st century, decolonial theory and the ‘strong program’ in cultural sociology opened new avenues of reflection in Mexican cultural sociology.

Net primary production annual maxima in the North Atlantic projected to shift in the 21st century

Abstract. Shifts in the day of peak net primary production (NPP) were detected in different biogeochemical provinces of the North Atlantic (25–65° N). Most provinces displayed a shift toward earlier peak NPP, with the largest change points in the 21st century and in the northern parts of the domain. Furthermore, the occurrences of the first day with a mixed-layer depth (MLD) shallower than 40 m and the day of peak NPP are positively correlated over most of the domain. As was the case for the day of peak NPP, the largest change points for the day of MLD shallower than 40 m occur around or after the year 2000. Daily output from two fully coupled CMIP6 Earth system models, EC-Earth3-CC and NorESM2-LM, for the period 1750–2100 and under the SSP5-8.5 scenario, were used for the analysis. The ESM NPP data were compared with estimates derived from Carbon, Absorption and Fluorescence Euphotic-resolving (CAFE) satellite-based data. The ESMs showed significant differences from the CAFE model, though the timing of peak NPP was well captured for most provinces. The largest change points in the day of peak NPP occur earlier in EC-Earth3-CC than in NorESM2-LM. Although SSP5-8.5 is a scenario with very high warming, EC-Earth3-CC generates change points for most provinces in the early part of the 21st century, before the warming has deviated far from lower-emissions scenarios. NorESM2-LM displays the largest change points centered around the mid 21st century, with two out of eight provinces displaying the largest change point before the year 2050. The early timing of the detected shifts in some provinces in both ESMs suggests that similar shifts could already have been initiated or could start in the near future. This highlights the need for long-term monitoring campaigns in the North Atlantic.

Unstable interdecadal relationship between the Pacific Decadal Oscillation and eastern China summer precipitation in simulated warm interglacial epochs and twenty-first century

The modern connection between the Pacific Decadal Oscillation (PDO) and eastern China summer precipitation (ECSP) at the decadal scale has been extensively studied. However, whether this correlation is stable during the warmer backgrounds in the past and future remains unclear. Clarifying this issue may yield meaningful insights into past PDO reconstruction and decadal climate projection in eastern China (EC). Based on the FGOALS-f3-L, which performs best in reproducing the observed PDO pattern and the decadal PDO–ECSP relationship among 10 models under the framework of the coupled Model Intercomparison Project phase 6 (CMIP6), we find an unstable relationship between the PDO and ECSP at the decadal scale during the last Interglacial (LIG), mid-Holocene, and the twenty-first century under the Shared Socioeconomic Pathway (SSP) SSP5–8.5 scenario. The PDO-related ECSP roughly shows a west–east dipole pattern with excessive precipitation in the east during the LIG, whereas the mid-Holocene witnesses a generally decreased ECSP, except for South and Northeast China. Under the SSP5–8.5 scenario, the PDO-related decadal ECSP exhibits excessive precipitation in the west but a deficit in the east, especially in South and Northeast China. This instability is ascribed to changes in the vertical motions and moisture divergence associated with various configurations of large-scale atmospheric circulations from the lower to upper troposphere. Furthermore, these diverse atmospheric circulation patterns relate to the variations in the convective heating over the western North Pacific and the propagation of extratropical Rossby waves, which are connected with the different PDO patterns and the mean state differences in the westerly jet stream locations during the past and future warm periods

Modelling 21st century refugia and impact of climate change on Amazonia's largest primates

Edaphic and vegetation conditions can render climatically suitable sites inadequate for a species to persist, constraining the amount of suitable habitat and the possibilities of tracking preferred climatic conditions as they shift in response to climate change. We combined climatic and remotely sensed data to model current and future distributions of nine extant taxa of ateline primates across the Amazon basin. We used the models to identify and quantify potential range changes and refugia of suitable habitat from the present to the latter half of the 21st century. We applied an ensemble forecasting approach for species distribution models using 596 spatially rarefied occurrences. We parameterised these models combining reflectance data from a basin‐wide Landsat TM/ETM+ image composite, and three sets of bioclimatic layers containing data for the current time period, and two different (moderate and worst‐case) climate change scenarios for 2041–2070. Eight out of nine taxa are likely to experience pronounced range losses, with seven of them predicted to lose over 50% of their currently suitable habitats irrespective of climate change scenarios. Modelled ateline richness exhibited a broad decrease in high‐richness areas, and a possible redistribution along the northernmost parts of western Amazonia. Refugia from 21st century climate change for the whole complex were mostly concentrated in western Amazonia, especially in its southern part. We identified hotspots of vulnerability to climate change and 21st century refugia for all Amazonian atelines while accounting for habitat characteristics that are important to guarantee the continued existence of suitable habitats for these strictly arboreal taxa. Increasing the understanding of climate change impacts on Amazonia's largest primates can help to inform spatial conservation planning decisions and management to sustain forest‐dwelling biodiversity over large areas such as Amazonia.

Characteristics of extreme meteorological droughts over the Brazilian Pantanal throughout the 21st century

The Brazilian Pantanal is a remarkable ecosystem, encompassing vital aspects such as fish, fruit, and grain production, greenhouse gas emission regulation, temperature and precipitation modulation, and groundwater recharge. However, 2019 and 2020 experienced prolonged and severe drought that profoundly impacted the Pantanal region. Although these impacts are still under review, their effects on wildlife, vegetation, and the local population are undeniable. To enhance our understanding of the magnitude and consequences of the 2019/2020 drought, the present study conducted a comprehensive evaluation of drought occurrences in the Pantanal biome. Utilizing two well-established drought indices, the standard precipitation index (SPI) and the standard precipitation evapotranspiration index (SPEI), we analyzed the available observational data provided by the Climate Research Unit (CRU). Additionally, we endeavored to project droughts throughout the 21st century, thereby facilitating the visualization of potential reoccurrences of hazardous events in the Pantanal area. Two regional climate model (RCM) ensembles, the Eta ensemble (E1) and CORDEX ensemble (E2), along with representative concentration pathways (RCP4.5 and RCP8.5 scenarios) were used to project the severity of droughts in the Brazilian Pantanal until 2098/2099. The findings indicate that the hydrological year of 2019/2020 was the driest on record in the Pantanal over the past 80 years. The E1 ensemble did not project such an extreme event, whereas the E2 ensemble forecasted extreme droughts before the 2040s under the RCP4.5 and RCP8.5 scenarios. Using the SPEI, both ensembles showed similar results, with extreme droughts projected toward the end of the 21st century. Notably, the SPI demonstrated effectiveness in detecting short-term droughts, while the SPEI was more efficient for long-term assessments, projecting extreme drought events for the last two decades. The SPEI, employed with the Eta and CORDEX ensembles, can provide valuable insights into drought projections. Moreover, the potential recurrence of extreme droughts, characterized by significant below-average precipitation spanning vast areas throughout the hydrological year, poses a severe threat to the Pantanal biome in this century.

An Englishman abroad: Evening Land and the struggles of Peter Watkins within Scandinavian film culture of the 1970s

This article analyses Aftenlandet (Evening Land), a film made for the Danish Film Institute in 1976 by Peter Watkins, one of the world’s most politically radical directors and a pioneer of docudrama. The aim is to provide a detailed historical account of the life cycle of a key but hitherto critically neglected film in the director’s career: his last to be professionally funded for nearly 25 years and one that saw Watkins working within the very particular milieu of Denmark, investigating, often controversially, the perceived political fault lines of Danish society during the 1970s. The article traces how this English-born filmmaker came to be working in Scandinavia, details the production of Evening Land and provides a close critical reading of the film’s various themes and techniques as well as considering its reception and aftermath. Correspondence and production files from Watkins’ own personal archive reveal the difficulties the filmmaker clearly experienced as something of ‘an Englishman abroad’ attempting to find a place for himself within Scandinavian film culture of the period. The article asserts that this experience eventually contributed to Watkins’ decision to quit Scandinavia altogether following the completion of Evening Land, a decision that would inadvertently propel Watkins out of the world of professional filmmaking for nearly a quarter century. The article argues, however, that Evening Land, a film long obscure and critically neglected, still has cultural resonance and applicability to our own times in the twenty-first century.

Normalizing Relations from the Cold War to the Present: Continuing War, Pursuing Peace, and Building Empire

Abstract “Normalization of relations” is a phrase of recent origin, widely used by scholars, politicians, and journalists. Defining normalization, however, is remarkably difficult. While we know a great deal about specific instances of normalization, we lack a sustained study of normalization itself, a gap this article begins to address. Using case studies of U.S. relations with China, Vietnam, and Cuba, this article examines the idea of normalization, its history, and its consequences. Focusing on pivotal moments in which “normalization” was at stake, we argue that in the American rendering, normalization was a process that unfolded in three phases. In turn, normalizing relations became a key nonmilitary means through which U.S. officials escalated and then deescalated the Cold War. Like other facets of U.S. diplomacy of the postwar period, normalization policies were premised on many of the assumptions and institutions of the “liberal international order” and have endured into the twenty-first century.

The carbonate pump feedback on alkalinity and the carbon cycle in the 21st century and beyond

Abstract. Ocean acidification is likely to impact all stages of the ocean carbonate pump, i.e. the production, export, dissolution and burial of biogenic CaCO3. However, the associated feedback on anthropogenic carbon uptake and ocean acidification has received little attention. It has previously been shown that Earth system model (ESM) carbonate pump parameterizations can affect and drive biases in the representation of ocean alkalinity, which is critical to the uptake of atmospheric carbon and provides buffering capacity towards associated acidification. In the sixth phase of the Coupled Model Intercomparison Project (CMIP6), we show divergent responses of CaCO3 export at 100 m this century, with anomalies by 2100 ranging from −74 % to +23 % under a high-emission scenario. The greatest export declines are projected by ESMs that consider pelagic CaCO3 production to depend on the local calcite/aragonite saturation state. Despite the potential effects of other processes on alkalinity, there is a robust negative correlation between anomalies in CaCO3 export and salinity-normalized surface alkalinity across the CMIP6 ensemble. Motivated by this relationship and the uncertainty in CaCO3 export projections across ESMs, we perform idealized simulations with an ocean biogeochemical model and confirm a limited impact of carbonate pump anomalies on 21st century ocean carbon uptake and acidification. However, we highlight a potentially abrupt shift, between 2100 and 2300, in the dissolution of CaCO3 from deep to subsurface waters when the global-scale mean calcite saturation state reaches about 1.23 at 500 m (likely when atmospheric CO2 reaches 900–1100 ppm). During this shift, upper ocean acidification due to anthropogenic carbon uptake induces deep ocean acidification driven by a substantial reduction in CaCO3 deep dissolution following its decreased export at depth. Although the effect of a diminished carbonate pump on global ocean carbon uptake and surface ocean acidification remains limited until 2300, it can have a large impact on regional air–sea carbon fluxes, particularly in the Southern Ocean.

Tetrahedral Representative-Based Reaction Kinetics Teaching Materials with an Ethnoscience Approach to Improve Students' Critical Thinking Ability

Critical thinking is part of the skills needed in science learning in the 21st century. However, the PISA test results show that the level of critical thinking abilities of students in Indonesia is still relatively low. This research was carried out as an effort to overcome this, by developing teaching materials on reaction kinetics based on tetrahedral representations with an ethnoscience approach to improve students' critical thinking skills. This research was carried out in development stages involving 5 expert and practitioner validators and 66 students. Data was collected using questionnaires, observation sheets and test instruments. The data analysis technique used is descriptive data analysis technique, namely by describing the validity, practicality and effectiveness of the teaching materials being developed. The results of this research show that the teaching materials developed are very valid with a validity score of 90.91% and very practical with a practicality score of 90.97%. These results indicate that the teaching materials developed are suitable for use in order to improve students' critical thinking abilities.

Empowering Learning Through Game Creation: Investigating the Impact of Educational Technology on Learners’ Engagement and Attainment Level in Subject-Based Game Design (Phase I)

Empowering Learning Through Game Creation: Investigating the Impact of Educational Technology on Learners’ Engagement and Attainment Level in Subject-Based Game Design (Phase I)