bluuebunny/crossref_metadata_2025_split huggingface dataset:
Interpreting summertime hourly variation of NO2 columns with implications for geostationary satellite applications
Authors: Chatterjee Deepangsu , Martin Randall V. , Li Chi , Zhang Dandan , Zhu Haihui , Henze Daven K. , Crawford James H. , Cohen Ronald C. , Lamsal Lok N. , Cede Alexander M. 
Published: November 2024

Abstract. Accurate representation of the hourly variation in the NO2-column-to-surface relationship is essential for interpreting geostationary observations of NO2 columns. Previous research indicated inconsistencies in this hourly variation. This study employs the high-performance configuration of the GEOS-Chem model (GCHP) to analyze daytime hourly NO2 total columns and surface concentrations during summer. We use measurements from globally distributed Pandora sun photometers and aircraft observations over the United States. We correct Pandora total NO2 vertical columns for (1) hourly variations in effective temperature driven by vertically resolved contributions to the total column and (2) changes in local solar time along the Pandora line of sight. These corrections increase the total NO2 columns by 5–6 × 1014 molec. cm−2 at 09:00 and 18:00 across all sites. Fine-scale simulations from GHCP (∼12 km) reduce the normalized bias (NB) against Pandora total NO2 columns from 19 % to 10 % and against aircraft measurements from 25 % to 13 % in Maryland, Texas, and Colorado. Similar reductions are observed in NO2 columns over the eastern US (17 % to 9 %), the western US (22 % to 14 %), Europe (24 % to 15 %), and Asia (29 % to 21 %) when compared to 55 km simulations. Our analysis attributes the weaker hourly variability in the total NO2 column to (1) hourly variations in column effective temperature, (2) local solar time changes along the Pandora line of sight, and (3) differences in hourly NO2 variability from different atmospheric layers, with the lowest 500 m exhibiting greater variability, while the dominant residual column above 500 m exhibits weaker variability.
Improved calculation of single-scattering properties of frozen droplets and frozen-droplet aggregates observed in deep convective clouds
Authors: Kim Jeonggyu , Park Sungmin , McFarquhar Greg M. , Baran Anthony J. , Cha Joo Wan , Lee Kyoungmi , Lee Seoung Soo , Jung Chang Hoon , Lim Kyo-Sun Sunny , Um Junshik 
Published: November 2024

Abstract. During multiple field campaigns, small quasi-spherical ice crystals, commonly referred to as frozen droplets (FDs), and their aggregates (frozen-droplet aggregates, FDAs) have been identified as the predominant habits in the upper regions of deep convective clouds (DCCs) and their associated anvils. These findings highlight the significance of FDs and FDAs for understanding the microphysics and radiative properties of DCCs. Despite the prevalence of FDs and FDAs at the tops of DCCs where they directly contribute to cloud radiative effect, the detailed single-scattering properties (e.g., scattering-phase function P11 and asymmetry parameter g) of FDs and FDAs remain highly uncertain. This uncertainty is mainly due to insufficient in situ measurements and the resolution of cloud probes, which hinder the development of idealized shape models for FDs and FDAs. In this study, two shape models, the Gaussian random sphere (GS) and droxtal (DX), are proposed as possible representations for the shapes of FDs and FDAs measured in situ. A total of 120 individual models of GSs and 129 models of DXs were generated by varying their shapes. Furthermore, by attaching these individual models in both a homogeneous and heterogeneous manner, three different types and a total of 404 models of FDAs were created: (1) aggregates of GSs; (2) aggregates of DXs; and (3) combinations of GSs and DXs, which are called habit mixtures (HMs). The P11 and g values of the developed models were calculated using a geometric optics method at a wavelength of 0.80 µm and then compared with those obtained using a polar nephelometer (PN) during the CIRCLE-2 field campaign to assess the models. Both individual-component ice crystals (i.e., either GS or DX) and homogeneous-component aggregates (i.e., either aggregates of GSs or aggregates of DXs) showed substantial differences compared with the PN measurements, whereas the P11 of the HMs was found to most accurately match the P11 measured in situ, reducing the differences to +0.87 %, +0.88 %, and −5.37 % in the forward-, lateral-, and backward-scattering regions, respectively. The g value of the HMs was found to be 0.80, which falls within the range of the PN measurement (0.78 ± 0.04). The root-mean-square error for the HM was minimized to a value of 0.0427. It was shown that the novel HMs developed in this study demonstrated better performance than in previous research where HMs were developed indirectly by weighting the calculated P11 of shape models to interpret in situ measurement. The results of this study suggest potential implications for enhancing the calculation of single-scattering properties of ice crystals in DCCs.
On Weighted Sums of Horadam Numbers
Authors: Prabha Sivaraman Nair  
Published: November 2024

For nonzero integers p,q with p-q≠1, let (U_n )_(n≥0) be the Lucas sequence of the first kind defined by U_n=pU_(n-1)-qU_(n-2) for n≥2 with initial terms U_0=0 and U_1=1. In this paper, we provide explicit formulas for evaluating the weighted sums ∑_(k=1)^n▒k^m U_k and ∑_(k=1)^n▒k^m U_(k+r) using binomial coefficients for nonnegative integers m and arbitrary integers r. Furthermore, we extend these summation formulas to the Horadam sequence (W_n )_(n≥0) defined by the same recursion W_n=pW_(n-1)-qW_(n-2) for n≥2 with arbitrary initial terms W_0 and W_1.
КОНЦЕПЦИЯ АНТИКРИЗИСНОГО МАРКЕТИНГА ПРЕДПРИЯТИЙ МАЛОГО БИЗНЕСА
Authors: Н.Н. ДАВИДЧУК , А.М. ПЯТАЧЕНКО 
Published: November 2024

В статье рассмотрена роль антикризисного маркетинга в деятельности предприятий малого бизнеса в эпоху экономической нестабильности. Представлены результаты исследования различных электронных научных баз в области кризисного маркетинга. Выделена информационная концепция маркетинга, которая предоставляет большие возможности для выживания предприятий малого бизнеса в кризисных условиях. Выделено, что ключевыми фокусами антикризисного маркетинга предприятий малого бизнеса являются мониторинг информации о состоянии рынка, оптимизация затрат, внедрение цифровых технологий, перенос маркетинговой деятельности в онлайн-среду, коммутантая и патентная инновационные стратегии, поддержание лояльности существующих клиентов. Разработана концепция антикризисного маркетинга для предприятий малого бизнеса в которой представлены миссия, цель, задачи и стратегии,направленные на поддержание и улучшение конкурентоспособности в условиях экономической нестабильности. Построена модель успешности антикризисного маркетинга.
The paper examines the role of anti-crisis marketing in the activities of small businesses in the era of economic instability. The results of a study of various electronic scientific databases in the field of crisis marketing are presented. It is highlighted the information concept of marketing which provides great opportunities for the survival of small businesses in crisis conditions and that the key focuses of anti-crisis marketing for small businesses are monitoring information about the state of the market, cost optimization, the introduction of digital technologies, the transfer of marketing activities to the online environment, switching and patent innovation strategies, maintaining the loyalty of existing customers. The concept of anti-crisis marketing for small businesses has been developed, which presents the mission, goal, objectives and strategies aimed at maintaining and improving competitiveness in conditions of economic instability. A model of the success of anti-crisis marketing has been built.
адаптация человеческого капитала к цифровой экономике через трансформацию системы высшего образования
Authors: А.П. БАХОВА , Е.А. БЮЛЛЕР , С.К. ЧИНАЗИРОВА 
Published: November 2024

В условиях быстрого распространения цифровых технологий и цифровой трансформации во всех сферах жизни современное развитие общества привело к четвертой промышленной революции и новой эпохе социального развития. Все эти процессы, связанные с цифровизацией, указывают на необходимость внесения своевременных и адекватных изменений в социально-экономическую систему и, соответственно, в трудовые ресурсы. Переход к полностью цифровой экономике кажется невозможным без квалифицированных кадров и экспертов. Известно, что главным элементом всех процессов позитивных изменений и двигателем развития является человеческий капитал. Поэтому развитие современного общества порождает потребность в цифровой грамотности среди населения и во всех сферах профессиональной деятельности. Развитие высококачественных человеческих ресурсов является важной целью стратегии устойчивого развития страны. Если говорить о формировании качественного человеческого капитала, то нельзя обойти вниманием новый и важный вопрос адаптации системы высшего образования к новым условиям и использования возможности формирования человеческого капитала именно с необходимыми знаниями, навыками и умениями в связи с цифровизацией. В условиях новой формации образование должно служить развитию самостоятельного управления обучением и индивидуальной творческой инициативы, но, к сожалению, сегодня образование ориентировано на массовое обучение без результата и качества.
With the rapid spread of digital technologies and digital transformation in all spheres of life, the modern development of society has led to the fourth industrial revolution and a new era of social development. All these processes associated with digitalization indicate the need to make timely and adequate changes in the socio-economic system and, consequently, in the workforce. The transition to a fully digital economy seems impossible without qualified human resources and experts. It is known that the main element of all processes of positive change and the engine of development is human capital. Therefore, the development of modern society generates the need for digital literacy among the population and in all spheres of professional activity. The development of high-quality human resources is an important goal of the country's sustainable development strategy. If we talk about the formation of high-quality human capital, we cannot ignore the new and important issue of adapting the higher education system to new conditions and using the opportunity to form human capital with the necessary knowledge, skills and abilities in connection with digitalization. In the conditions of the new formation, education should serve the development of independent learning management and individual creative initiative, but, unfortunately, today education is focused on mass learning without results and quality.
The Role of Media Diplomacy in Shaping the State’s International Image
Authors: Yemets Valentyna 
Published: November 2024

The article attempts to determine the role of media diplomacy in shaping the state's image in the international arena.
Media diplomacy under the conditions of globalization transformed geopolitical relations and changed the hierarchical system of foreign policy decision-making, highlighting the competition among states for the opportunity to influence public opinion. The information policy of the state involves not only the dissemination of positive information about it in the international information space, but also the integration of politicians, state government structures, non-state actors, famous personalities, and opinion leaders into the brand management system of the state's national policy. At the same time, the use of social media platforms in the implementation of diplomatic activities has led to the fact that any user of a social network today is not only a consumer of information, but also a direct supplier and distributor of it, meaning they have the opportunity to influence the adoption of certain decisions at the state level and shape in this way the image of the state. The article analyzes the use of media diplomacy mechanisms in the formation of Ukraine's image, identifies positive and negative aspects, and discusses prospects for its development.
Poland’s Cultural Diplomacy in Ukraine
Authors: Lutsyshyn Halyna , Kornat Lesia , Lukachuk Olena 
Published: November 2024

The article examines the peculiarities of the implementation of the Republic of Poland's implementation of cultural diplomacy in Ukraine. Considerable attention is paid to the analysis of the basic foundations and principles of the development of Polish cultural diplomacy in modern modern times, and the activities of governmental and non-governmental institutions working in the field of cultural diplomacy. It is noted that the development of Poland's cultural diplomacy has been positively influenced by its EU membership, the modernization and expansion of cultural infrastructure, the growing number of cultural institutions in Poland, and the intensification of Ukrainian-Polish cultural cooperation The activities of cultural diplomacy actors such as the Polish Institute in Kyiv, the Center for Polish Culture and European Dialogue in Ivano-Frankivsk, the Mickiewicz Institute, the Stefan Batory Foundation, the Other Space Foundation, the Krzysztof Skubiszewski Foundation, and the Lane Kirkland Program, and their roles in developing and strengthening Ukrainian-Polish cultural cooperation are analyzed. Since the onset of Russia's full-scale invasion of Ukraine, it is noted that the Polish government has continued to advance cultural diplomacy in Ukraine. The Polish Institute, in particular, has been implementing numerous cultural and artistic projects at various levels. Support for the Polish diaspora during the war has intensified, Polish culture is being increasingly promoted, and scientific diplomacy is actively progressing, particularly through joint Ukrainian-Polish research, scientific exchanges, and academic mobility programs for scholars.
Chromolaena odorata Extract as an Eco-Friendly Reducing Agent for Graphene Oxide
Authors: Ananpreechakorn Watsayod , Wongma Krittaphat , Sumphao Theerawut , Phewphong Sunti , Anuwongsa Nattawat , Wattanasarn Hassakorn 
Published: November 2024

Chromolaena odorata (Siam weed) was researched for its application as a novel reducing agent. Graphene oxide (GO) was prepared via a modified Hummers method, and its reduction was achieved using an aqueous extract of Chromolaena odorata leaves. The use of conventional reducing agents typically results in hydrophobic reduced graphene oxide (rGO), which leads to agglomeration in solvents. However, the green reduction method using Chromolaena odorata extract achieved a homogeneous dispersion, which is crucial for applications requiring simple preparation techniques such as magnetic stirring, ultrasonic sonication, and vacuum mixing. Characterization of the rGO revealed a broad peak around 24.12º in the x-ray diffraction (XRD) pattern, an increased ID / IG ratio of 1.09 from Raman spectroscopy, and a high C:O ratio of 5.07 from energy dispersive x-ray spectroscopy (EDS). Additionally, BET analysis demonstrated an increase in surface area and pore volume, while FESEM analyses showed a uniform morphology with clear structural defects and minimal oxygen content. FTIR spectra further confirmed the reduction process, indicated significant decrease in oxygen-related peaks. These findings highlight the potential of Chromolaena odorata as a sustainable reducing agent for the environmentally friendly synthesis of high-quality rGO.
Miskonsepsi terhadap Komersialisasi dan Komodifikasi Akad dalam Fikih Muamalah Kontemporer (Analisis Maqasidus Syariah)
Authors: Khulwah Juhrotul 
Published: November 2024

Penerapan akad-akad dalam fikih muamalah kontemporer sering kali mengalami miskonsepsi, terutama terkait komersialisasi dan komodifikasi yang dilakukan oleh masyarakat maupun lembaga. Ketertarikan terhadap praktik muamalah ini didorong oleh nilai etika dan transparansi yang terdapat dalam ekonomi Islam, seperti yang diterapkan oleh lembaga keuangan syariah. Namun, praktik akad yang tidak sesuai dengan hukum syariah dapat mengurangi daya tarik dan integritas sistem tersebut. Tujuan dari penelitian ini adalah untuk meluruskan Kembali tentang pengaplikasian akad-akad yang sesuai dengan hukum ekonomi syariah (muamalah). Metode yang digunakan adalah Pustaka atau library research, metode library research merupakan salah satu metode dari penelitian jenis kualitatif. Data data dan bahan yang digunakan untuk mengkaji dalam penelitian inibersumber dari buku, jurnal, kitab dan lain sebagainya. Berdasarkan penelitian terungkap bahwa banyak sekali terjadi miskonsepsi terhadap komersialisasi dan komodifikasi akad dalam praktik muamalah di dalam Masyarakat, banyak sekali akad yang seharusnya tidak dibolehkan mengambil keuntungan tetapi dalam praktiknya diambil keuntungan, maka harus diluruskan lagi bahwa dalam fikih muamalah ada dua jenis akad yang sudah paten yaitu akad tabaruk dan akad tijarah, tidak boleh dicampur adukkan antara keduanya, karena akan menghilangkan ciri khas dari ekonomi Islam yang dikenal oleh Masyarakat, yaitu system ekonomi yang memegang erat prinsip dan etika. Penelitian ini menyimpulkan bahwa diperlukan edukasi lebih lanjut mengenai perbedaan akad untuk mencegah komersialisasi yang tidak sesuai, serta pentingnya peran aktif lembaga keuangan syariah dan pemerintah dalam menjaga integritas praktik keuangan syariah agar sesuai dengan prinsip Maqasid Syariah.
Rotación de jefes de alta gerencia y su impacto en la jefatura financiera de la Corporación Nacional de Telecomunicaciones.
Authors: Macías Zambrano Gabriela Lissette , Feijó Cuenca Tito Eliecer 
Published: November 2024

En las instituciones tanto públicas como privadas la alta gerencia está representada por sus directivos, quienes se ocupan de la toma de decisiones, dirigir, evaluar, así como aprobar o negar los proyectos a sus subordinados, sin embargo, cuando es constante la rotación del personal que preside estos cargos se puede generar incertidumbre entre los colaboradores, tiempos de respuesta más prolongados e interrupción de la productividad. En la Corporación Nacional de Telecomunicaciones (CNT) Regional Cuatro – Manabí, una de las áreas que presenta afectaciones directas cuando existe rotación de un cargo gerencial es la jefatura financiera y soporte - Manabí, debido a que se interrumpe gran parte de sus procesos hasta la habilitación del nuevo directivo. El presente trabajo tiene como objetivo determinar el Impacto de la rotación de jefes de alta gerencia en la eficiencia de la jefatura financiera de la Corporación Nacional de Telecomunicaciones, paro lo cual se realizó un análisis de la rotación de jefes de alta gerencia en CNT utilizando en la investigación la metodología no experimental-transversal la que se sustenta en métodos y técnicas científicas como son la observación y las encuestas aplicadas en la agencia de Regional 4 de CNT EP, siendo esta investigación de carácter exploratoria, descriptiva y explicativa.
STRATEGI PEMBELAJARAN KOOPERATIF UNTUK MENINGKATKAN KEAKTIFAN SISWA SEKOLAH DASAR
Authors: FR Christiananda, Dewi Anggraini, dkk  
Published: November 2024

Penelitian ini bertujuan untuk mengetahui dampak strategi pembelajaran kooperatif terhadap keaktifan siswa. Metode yang digunakan dalam penelitian ini adalah metode kualitatif dengan menggunakan pendekatan berbasis literatur, yaitu mencari referensi melalui artikel dan sumber lain yang dianggap relevan dan informatif. Pennelitian ini menggunakan studi kepustakaan yaitu dengan menganalisis pustaka-pustaka yang relevan dengan konteks penelitian. Hasil dan pembahasan menunjukkan bahwa strategi pembelajaran adalah rencana pelaksanaan kegiatan pembelajaran yang dapat dilakukan guru dan siswa untuk mencapai tujuan pembelajaran secara efektif dan efisien. Strategi pembelajaran kooperatif mampu menciptakan keaktifan siswa dalam pembelajaran karena pembelajaran ini melakukan diskusi dengan kelompoknya masing-masing.
PENERAPAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING UNTUK MENINGKATKAN KEAKTIFAN BELAJAR IPS DI SEKOLAH DASAR
Authors: Checil Checilia Melita Sukmawati, Dewi Anggraini, Isna Rahmawati 
Published: November 2024

Penelitian ini merupakan penelitian kualitatif studi lapangan dengan memaparkan serta mengungkapkan fakta-fakta yang ada dilapangan untuk meningkatkan pembelajaran IPS Kegiatan Ekonomi, subjek penelitiannya adalah siswa kelas IV SD Negeri 2 Brangkal tahun ajaran 2023/2024. Penerapan model pembelajaran berbasis masalah pada kegiatan IPS dan ekonomi dilakukan melalui langkah sebagai berikut: 1) mengorientasikan siswa pada masalah, 2) mengorganisasikan siswa, 3) mencari, menganalisis, dan mendiskusikan masalah dalam metode kelompok, 4) menyajikan solusi dan hasil diskusi 5) menganalisis dan mengevaluasi proses pemecahan masalah. Penerapan model pembelajaran berbasis masalah terbukti meningkatkan pembelajaran IPS bagi siswa kelas 4. Proses pembelajaran meliputi keaktifan dan keterlibatan siswa yang terus berkembang seiring dengan semakin meningkatnya keberhasilan guru dalam menerapkan pembelajaran berbasis model problem based learning. Peningkatan proses pembelajaran juga signifikan dalam meningkatkan hasil belajar dengan demikian, penerapan model pembelajaran berbasis masalah diyakini mampu meningkatkan efektivitas pembelajaran sosiologi kegiatan ekonomi.
Kata kunci : Problem based learning, peningkatan pembelajaran, IPS
THE EFFECT OF PIN LENGTH AND COMPRESSIVE FORCE IN DOUBLE SIDE FRICTION STIR WELDING ON BENDING STRENGTH OF AA1100
Authors: Sukma Satriawan  , Setiawan Agus , Pebrianti Dwi , Binti MD. Zain Zainah 
Published: November 2024

Many new welding methods have emerged to improve connection results, including friction stir welding (FSW). FSW is a welding method that is widely used in welding aluminium alloys. FSW method on AA1100 aluminium material has not yet obtained the maximum bending strength so it is necessary to study the improvement of the quality of FSW joints using the welding method on both sides or double side friction stir welding (DFSW). This study aims to determine the effect of pin length and downward force on double side friction stir welding (DFSW) on the bending strength of AA1100 aluminium . The independent variables of this study are pin length (1.5 mm, 2 mm, 2.5 mm) and downward force (30 kg, 35 kg, 40 kg, 45 kg). The controlled variables are shoulder diameter of 25 mm, machine table translational speed of 10 mm/min, spindle rotation speed of 1750 rpm, base plate temperature of 250ºC, and AA1100 plate thickness of 3.6 mm with butt joint type welding connection model. The method used in this research is experimental using the factorial design of experiment (DOE) data analysis method. The results of this study indicate that pin length and downward force have a significant effect on the bending strength of DFSW welded joints on AA1100. The maximum bending strength value of the welded joint was 289.59 MPa at a pin length variation of 2 mm and a compressive force of 35 kg. The percentage of weld defects including tunnel and flash in welded joints with maximum bending strength is identified as the least and the micro test results also show the least FeAl3 particle grains.