bluuebunny/crossref_metadata_2025 huggingface dataset:
Reliable water vapour isotopic composition measurements at low humidity using frequency-stabilised cavity ring-down spectroscopy
Authors: Casado Mathieu , Landais Amaelle , Stoltmann Tim , Chaillot Justin , Daëron Mathieu , Prié Fréderic , Bordet Baptiste , Kassi Samir
Published: August 2024

Abstract. In situ measurements of water vapour isotopic composition in polar regions has provided needed constrains of post-deposition processes involved in the archiving of the climatic signal in ice core records. During polar winter, the temperatures, and thus the specific humidity, are so low that current commercial techniques are not able to measure the vapour isotopic composition with enough precision. Here, we make use of new developments in infrared spectroscopy and combine an optical-feedback frequency-stabilised laser source (OFFS technique) using a V-shaped cavity optical feedback (VCOF) cavity and a high-finesse cavity ring-down spectroscopy (CRDS) cavity to increase the signal-to-noise ratio while measuring absorption transitions of water isotopes. We present a laboratory infrared spectrometer leveraging all these techniques dedicated to measure water vapour isotopic composition at low humidity levels. At 400 ppmv, the instrument demonstrates a precision of 0.01 ‰ and 0.1 ‰ in δ18O and d-excess, respectively, for an integration time of 2 min. This set-up yields an isotopic composition precision below 1 ‰ at water mixing ratios down to 4 ppmv, which suggests an extrapolated precision in δ18O of 1.5 ‰ at 1 ppmv. Indeed, thanks to the stabilisation of the laser by the VCOF, the instrument exhibits extremely low drift and very high signal-to-noise ratio. The instrument is not hindered by a strong isotope–humidity response which at low humidity can create extensive biases on commercial instruments.
Performance evaluation of an online monitor based on X-ray fluorescence for detecting elemental concentrations in ambient particulate matter
Authors: Trebs Ivonne , Lett Céline , Krein Andreas , Matsumoto Kawaguchi Erika , Junk Jürgen
Published: August 2024

Abstract. Knowledge of the chemical composition of particulate matter (PM) is essential for understanding its source distribution, identifying potential health impacts of toxic elements and to develop efficient air pollution abatement strategies. Traditional methods for analysing PM composition, such as collection on filter substrates and subsequent offline analysis with e.g., inductively coupled plasma mass spectrometry (ICP-MS), are time-consuming and prone to measurement errors due to multiple preparation steps. Emerging near-real time techniques based on non-destructive Energy Dispersive X-ray Fluorescence (EDXRF) offer advantages for continuous monitoring and source apportionment. This study characterises the Horiba PX-375 EDXRF monitor by applying a straightforward performance evaluation including (a) limit of detection (LoD), (b) identification and quantification of uncertainty sources, and (c) investigating and comparing measurement results from three contrasting sites in Luxembourg (urban, semi-urban, rural). We used multi-element reference materials (ME-RMs) from UC Davis for calibration and performed measurements during spring and summer 2023. The LoDs for toxic elements like Ni, Cu, Zn, and Pb were below 3 ng m-3 at one-hour time resolution. Higher LoDs were observed for lighter elements (e.g., Al, Si, S, K, Ca). Expanded uncertainties ranged between 5 and 25 % for elemental concentrations above 20 ng m-3 and were maximal for concentrations below 10 ng m-3, reaching 60–85 %. Elemental analysis revealed S and mineral elements (Fe, Si, Ca, Al) as dominant contributors to PM10. Toxic elements (As, Ni, Pb) were often below the LoD, suggesting minimal exposure risk in the sampled areas. Our results explained on average 51–74 % of the gravimetric PM10 mass at the three sites. The study highlights the suitability and importance of the continuous PX-375 particle monitor for future air quality monitoring and source apportionment studies, particularly under changing emission scenarios and air pollution abatement strategies.
The 1538 eruption at Campi Flegrei resurgent caldera: implications for future unrest and eruptive scenarios
Authors: Rolandi Giuseppe , Troise Claudia , Sacchi Marco , Di Lascio Massimo , De Natale Giuseppe
Published: August 2024

Abstract. The recent unrest in the Campi Flegrei caldera which began several decades ago, poses a high risk to a densely populated area, due to significant uplift, very shallow earthquakes of intermediate magnitude and the potential for an eruption. Given the high population density it is crucial, especially for civil defense purposes, to consider realistic scenarios for the evolution of these phenomena, particularly seismicity and potential eruptions. The eruption of 1538, the only historical eruption in the area, provides a valuable basis for understanding how unrest episodes in this caldera may evolve toward an eruption. In this paper, we provide a new historical reconstruction of the precursory phenomena of the 1538 eruption, analyzed considering recent volcanological observations and results obtained in the last few decades. This allows us to build a coherent picture of the mechanism and possible evolution of the present unrest, including expected seismicity, ground uplift and eruptions. Our work identifies two main alternative scenarios, providing a robust guideline for civil protection measures, and facilitating the development of effective emergency plans in this highly risky area.
Estimates of critical loads and exceedances of acidity and nutrient nitrogen for mineral soils in Canada for 2014–2016 average annual sulphur and nitrogen atmospheric deposition
Authors: Cathcart Hazel , Aherne Julian , Moran Michael D. , Savic-Jovcic Verica , Makar Paul A. , Cole Amanda
Published: August 2024

Abstract. The steady-state Simple Mass Balance model was applied to natural and semi-natural terrestrial ecosystems across Canada to produce nation-wide critical loads of acidity (maximum sulphur, CLmaxS; maximum nitrogen, CLmaxN; minimum nitrogen, CLminN) and nutrient nitrogen (CLnutN) at 250 m resolution. Parameterization of the model for Canadian ecosystems was considered with attention to the selection of the chemical criterion for damage at a site-specific resolution, with comparison between protection levels of 5 % and 20 % growth reduction (approximating commonly chosen base-cation-to-aluminum ratios of 1 and 10 respectively). Other parameters explored include modelled base cation deposition and site-specific nutrient and base cation uptake estimates based on North American tree chemistry data and tree species and biomass maps. Soil critical loads of nutrient nitrogen were also mapped using the Simple Mass Balance model. Critical loads of acidity were estimated to be low (e.g., below 500 eq-1 ha yr-1) for much of the country, particularly above 60° N latitude where base cation weathering rates are low due to cold annual average temperature. Exceedances were mapped relative to annual sulphur and nitrogen deposition averaged over 2014–2016. Results show that under a conservative estimate (5 % protection level), 10 % of Canada’s Protected and Conserved Areas in the study area experienced exceedance of some level of soil critical load of acidity while 70 % experienced exceedance of soil critical load of nutrient nitrogen.
Determination of the Atmospheric Volatility of Pesticides using Chemical Ionisation Mass Spectrometry
Authors: Jackson Olivia Mae , Voliotis Aristeidis , Bannan Thomas J. , O'Meara Simon P. , McFiggans Gordon , Johnson Dave , Coe Hugh
Published: August 2024

Abstract. Pesticides have been found to be transported through the atmosphere away from fields on application. A key indicator of a pesticide’s likelihood to reside in the atmosphere is its vapour pressure. Within this study we evaluate a novel method, the Filter Inlet for Gases and AEROsols (FIGAERO) coupled with a chemical ionisation mass spectrometer using a set of calibration compounds, poly-ethylene glycols (PEGs). Two methods of compound delivery onto the filter have been tested: atomisation and syringe deposition. Delivery results are consistent with previous studies, highlighting the lack of suitability of the syringe method. The successful calibration using the atomisation method was then used to determine the vapour pressure of 6 pesticides. This is the first-time particle phase pesticides have been measured with online mass spectrometry. The pesticides have then been compared to widely accepted standard literature values used in industry as well as values determined by a common environmental model also used in industry to give an indication of pesticide volatilities. Results showed that measurements from the FIGAERO-CIMS were consistent with reported literature values for some compounds, others differed by up to 2 orders of magnitude. Determinations of Dicamba, MCPA and MCPP volatility using the FIGAERO-CIMS showed them to be semi-volatile in agreement with literature values to be within an order of magnitude. Mesostrione exhibited the largest difference in volatility with the FIGAERO-CIMS measuring a low volatility of 4.12x10-8 Pa at 298 K (compared to a literature value of 5.7x10-6 Pa). The difference for 2,4-D of one order of magnitude perhaps can be explained by the smaller particles deposited on the FIGAERO filter compared to the aerosolised PEG calibration particles, leading to evaporation at lower Tmax values and a lower measured vapour pressure. The atmospheric implications of the pesticide volatilities are also discussed. A pesticide’s volatility is often a key indicator of the likelihood of the potential for short- or long-range transport occurring, thus determining a pesticide’s fate in the atmosphere and potential for environmental pollution from transportation in the air.
Learning from a large-scale calibration effort of multiple lake models
Authors: Feldbauer Johannes , Mesman Jorrit P. , Andersen Tobias K. , Ladwig Robert
Published: August 2024

Abstract. Process-based hydrodynamic lake models are commonly used for simulating water temperature, enabling testing of different scenarios and drawing conclusions about possible water quality developments or changes in important ecological processes such as methane gas emissions. Even though there are several models available, a systematic comparison regarding their performance is missing so far. In this study, we calibrated four different one-dimensional hydrodynamic lake models for a global dataset of 73 lakes to compare their performance in reproducing water temperature and estimated parameter sensitivity for the calibrated parameters. The models performance and parameter sensitivity showed a relation to the lake characteristics and model structure. No single model was the best, with each model performing better than the rest in at least some of the lakes. From the findings, we advocate the application of model ensembles. Nonetheless, we also highlight the need to further improve both weather forcing data, individual models, and multi-model ensemble techniques.
Reconstructing long-term (1980–2022) daily ground particulate matter concentrations in India (LongPMInd)
Authors: Wang Shuai , Zhang Mengyuan , Zhao Hui , Wang Peng , Kota Sri Harsha , Fu Qingyan , Liu Cong , Zhang Hongliang
Published: August 2024

Abstract. Severe airborne particulate matter (PM, including PM2.5 and PM10) pollution in India has caused widespread concern. Accurate PM concentrations are fundamental for scientific policymaking and health impact assessment, while surface observations in India are limited due to scarce sites and uneven distribution. In this work, a simple structured, efficient, and robust model based on the Light Gradient-Boosting Machine (LightGBM) was developed to fuse multisource data and estimate long-term (1980–2022) historical daily ground PM concentrations in India (LongPMInd). The LightGBM model shows good accuracy with out-of-sample, out-of-site, and out-of-year cross-validation (CV) test R2 values of 0.77, 0.70, and 0.66, respectively. Small performance gaps between PM2.5 training and testing (delta RMSE of 1.06, 3.83, and 7.74 µg m−3) indicate low overfitting risks. With great generalization ability, the openly accessible, long-term, and high-quality daily PM2.5 and PM10 products were then reconstructed (10 km, 1980–2022). This showed that India has experienced severe PM pollution in the Indo-Gangetic Plain (IGP), especially in winter. PM concentrations have significantly increased (p<0.05) in most regions since 2000 (0.34 µgm-3yr-1). The turning point occurred in 2018 when the Indian government launched the National Clean Air Programme, and PM2.5 concentrations declined in most regions (−0.78 µgm-3yr-1) during 2018–2022. Severe PM2.5 pollution caused continuous increased attributable premature mortalities, from 0.73 (95 % confidence interval (CI) [0.65, 0.80]) million in 2000 to 1.22 (95 % CI [1.03, 1.41]) million in 2019, particularly in the IGP, where attributable mortality increased from 0.36 million to 0.60 million. LongPMInd has the potential to support multiple applications of air quality management, public health initiatives, and efforts to address climate change. The daily and monthly PM2.5 and PM10 concentrations are publicly accessible at https://doi.org/10.5281/zenodo.10073944 (Wang et al., 2023a).
Short Communication: A database of the global distribution of (U-Th)/He ages and U, Th contents of goethites
Authors: Monteiro Hevelyn S. , Farley Kenneth A. , Vasconcelos Paulo M.
Published: August 2024

Abstract. Terrestrial supergene goethites of known ages record information on changes in weathering conditions through time. Here we present a database of (U-Th)/He ages and U and Th contents of goethites from different weathering environments around the globe. By consolidating published data collected at four different laboratories and unpublished data collected at the Noble Gas Laboratory at Caltech, we aim to give an overview of the work carried out by geochronologists and geochemists in the last 20 years. The database contains 2597 (U-Th)/He ages of goethites from 10 countries; most of the ages come from Brazil and Australia.
The effect of slab touchdown on anticrack arrest in propagation saw tests
Authors: Rosendahl Philipp L. , Schneider Johannes , Bobillier Grégoire , Rheinschmidt Florian , Bergfeld Bastian , van Herwijnen Alec , Weißgraeber Philipp
Published: August 2024

Abstract. Understanding crack phenomena in the snowpack and their role in avalanche formation is imperative for hazard prediction and mitigation. Many studies have explored how structural properties of snow contribute to the initial instability of the snowpack, focusing particularly on failure initiation within weak snow layers and the onset of crack propagation. This work addresses the subsequent stage, the effect of slab touchdown after weak layer failure in mixed-mode loading (compresive anticrack (mode I) and shear (mode II) loading). Here we show that slab touchdown reduces the energy release rate, potentially leading to crack arrest, even in static considerations. This finding challenges the notion that dynamic properties of snow layers and spatial snowpack changes alone dictate arrest, highlighting the critical role of mechanical interactions between the slab, weak layer, and base layer. By integrating these findings into the broader context of snowpack stability analysis, we contribute to a more nuanced understanding of avalanche initiation mechanisms. By offering a comprehensive model that can be applied in diverse geophysical settings (https://github.com/2phi/weac), this work extends the scope of avalanche science, promising new strategies for hazard assessment and mitigation.
Distribution of Sports Load by the Smart Photovoltaic Cell Switching System
Authors: Liu Huasen , Jin Xueyu
Published: August 2024

In order to discuss the allocation effect of an intelligent photovoltaic cell switching system on sports load, this paper, based on the ZigBee sensing model, designs the information allocation module for collecting sports load status based on the spectral characteristic analysis of model parameters and the real-time observation of sports load status, and obtains the initial data. In-depth analysis of the correlation analysis of intelligent photovoltaic cell switching system on sports load allocation, and judge the influence degree of sports load allocation. The results show that in the monitoring of sports load status, the data acquisition frequency of 28 to 30 kHz can reach -50 dB, and the maximum oxygen uptake VO2, the number of max indicators reached 33.21 ± 3.09 and O2, the number of P indicators is 362.57 ± 98.71, and the number of METs is 9.06 ± 1.21. Therefore, we show that the smart photovoltaic cell switching system has a positive correlation with the sports load distribution, and the smart photovoltaic cell switching system has a practical effect on the sports load distribution.
PENGARUH TEKNIK ISOLASI DNA GENOM TANAMAN TEMBAKAU TERHADAP KUALITAS DAN KUANTITAS HASIL EKSTRAKSI
Authors: Tanzil Ahmad Ilham , Fanata Wahyu Indra Duwi
Published: August 2024

Tobacco plants are an important plantation commodity in Indonesia. However, problems often occur in cultivation. These obstacles include abiotic and biotic stress. To overcome this problem, it is necessary to improve plant varieties through molecular-based breeding programs. This biotechnology program needs to carry out optimization research on the DNA isolation process so that the results produced can be used for further analysis. The method used uses a comparison of extraction techniques using tools and grinding with chemicals. Meanwhile, tobacco leaf samples were used with a comparison of wet samples and dry samples. From the results obtained, the treatment of the grinding method with chemicals and wet samples was able to increase the quality and quantity of DNA concentration.
IDENTIFIKASI JAMUR ANTAGONIS ASAL MEDIA LIMBAH JAMUR MERANG DAN POTENSINYA DALAM MENEKAN Rhizctonia solani PENYEBAB PENYAKIT PENYAKIT HAWAR PELEPAH PADI (Oryza sativa L.)
Authors: Miftahussurur Ahmad Daffa , Adhi Satriyo Restu , Sugiarto Sugiarto
Published: August 2024

One of the main diseases of rice is sheath blight caused by the fungus Rhizoctonia solani. The aim of this research is to isolate fungi originating from straw mushroom media waste which have antagonistic properties to the fungus R. solani. The research was carried out at the Biotechnology Laboratory, Faculty of Agriculture, Singaperbangsa University Karawang. The stages of this research consisted of: (1) isolation and identification of antagonist fungi from straw mushroom media waste, (2) in-vitro antagonism test using a Completely Randomized Design (CRD) repeated three times, (3) pathogenicity test of antagonist fungi on germination rice seeds. From the experimental results, 9 isolates of antagonistic fungi were obtained, 7 fungal genera were identified, consisting of 4 genera Trichoderma sp. and 3 genera Aspergillus sp. Based on the AUCGC results and the percentage of inhibition, the results show that several fungi from straw mushroom media waste have the ability to antagonize and inhibit R. solani. Treatment of JMA2 (Trichoderma sp.) and R. solani in the antagonism test gave the smallest AUCGC value of 29.38 and the largest inhibition percentage of up to 31.22%.
KAJIAN STILISTIKA: ANALISIS GAYA BAHASA DALAM LIRIK LAGU “QESSET HOBB” RAMY AYACH
Authors: Arsal Fathur Riyadhi , Supianudin Asep , Wiwaha Rizzaldy Satria
Published: August 2024

Language gives birth to beautiful literary works when composed with the right diction. Currently, many Arabic songs are viral on social media. The virality of Arabic songs is due to several factors, including music genres, arrangements, and expressions of feelings that contain language styles. Using a qualitative methodology, the researchers provided descriptive explanations for the discussion's outcomes. The read-note approach is then used to evaluate the acquired data. Specifically, by carefully reading and hearing the words to Qesset Hobb songs and comprehending the significance of each phrase. Then recording the majas found and categorizing them using Keraf's stylistic theory. Then, interpreting the meaning of the song lyrics to get a picture of the storyline and language style in it related to the data source, then drawing conclusions from the data that has been analyzed. According to the findings of this study, there are at least 13 different varieties of majas, separated into 9 rhetorical majas and 4 metaphorical. Overall, the song "Qesset Hobb" employs rhetorical devices such as exaggeration, litotes, pleonasm, alliteration, assonance, anastrophe, apostrophe, erotesis, and zeugma. Metaphors, personification, metonomia, and paronomasia are all examples of figurative language.
DINAMIKA ORGANISASI MAJELIS ADAT BUDAYA MELAYU INDONESIA (MABMI) DALAM MELESTARIKAN BUDAYA MELAYU DI KOTA MEDAN
Authors: Raharja Febrian Syah , Puspitawati Puspitawati
Published: August 2024

The establishment of the Unitary State of the Republic of Indonesia after the end of the Deli Malay kingdoms, made all government structures and attributes change. Deli Malay culture is increasingly neglected in the city of Medan, which is a multicultural society. Medan is a city that has many overseas communities and comes from various regions. Majelis Adat Budaya Melayu Indonesia (MABMI) was established in 1973, as a forum for the association of traditional leaders who became the shield of Malay customs. The purpose of the research is to find out the problems, challenges and roles carried out by MABMI institutions in preserving Malay culture in Medan City. This research uses a qualitative descriptive method. The results of this study are that the Indonesian Malay Cultural Customary Council has carried out positive planning on the development of Malay culture in Medan City, in accordance with its role as a Community Organization in charge of preserving Malay culture. However, the implementation of Malay cultural development is still not optimal due to the lack of attention of most of the people of Medan City and the younger generation of Malays to their culture.
POTRET DINAMIKA KEHIDUPAN MASYARAKAT DESA BOJONG CATANG, SERANG-BANTEN
Authors: Maryani Maryani , Saffa Agista
Published: August 2024

ABSTRACT
The portrait of the dynamics of the Bojong Catang Village community is a description of the life of a village community that is still thick with religious norms and customary law, whose economic needs depend on natural livelihoods. The purpose of this research is to find out the life and development that occurs from time to time in the village of Bojong Catang. The method used in this research is descriptive qualitative. Data collection used interview and observation techniques with the village head, RT and villagers, then documentation. The results showed that Bojong Catang village has a diversity of life dynamics, such as local culture that is still maintained, the main source of livelihood by utilizing natural resources. There are significant changes in life in the community, there are also Bojong Catang Village programs, community migration/urbanization, and local languages are also still preserved in everyday life.
KOSAKATA ‘RESIDIVIS’ SEBAGAI STIGMA NEGATIF DALAM PEMBERITAAN MEDIA MASSA TEMPO.co
Authors: Ulfah Anisa , Khofifah Afni Nor , Itasari Adelia Dwi , Kalfin Muhammad Rio , Eka Putri Nafa Wahyuningtyas
Published: August 2024

Media massa sebagai platform bagi masyarakat untuk bisa mendapatkan berbagai informasi dapat menunjukkan keberpihakannya melalui sajian-sajian yang tergambar dalam pilihan kata-kata yang digunakan. Hal tersebut menjadi menarik untuk diteliti sehingga dapat mengungkapkan bentuk-bentuk bahasa dan maknanya, salah satunya ialah kosakata residivis. Penelitian dilakukan menggunakan pendekatan kualitatif dengan metode analisis wacana untuk memperoleh gambaran deskriptif terkait penggunaan kosakata residivis. Hasil analisis yang dilakukan pada data yang dikumpulkan dari media massa Tempo.co tahun 2020, menunjukkan adanya stigma negatif yang terbentuk dari penggunaan kosakata residivis. Stigma negatif tersebut dibedakan menjadi dua jenis, yaitu stigma kasar dan stigma sarkasme. Adapun makna penggunaan kosakata residivis dibedakan menjadi lima kategori, yaitu idiomatik, metafora, leksikon, eufemisme, dan disfemisme. Dengan demikian, dapat disimpulkan bahwa dalam konteks ini, penggunaan kosakata residivis dapat membentuk stigma negatif melalui teks-teks berita yang disajikan oleh Tempo.co. Hal ini juga menunjukkan keberpihakan media massa pada kepentingan masyarakat untuk memberikan sanksi sosial kepada para pelaku kejahatan yang berulang sehingga meresahkan masyarakat.
PENGARUH PROMOSI DAN BRAND IMAGE TERHADAP KEPUTUSAN PEMBELIAN PRODUK SCARLETT PADA MARKETPLACE SHOPEE
Authors: Suyitno Suyitno , Wahyuningsih Yulie , Agustin Laily
Published: August 2024

There has been a significant increase in the level of public consumption of goods and services, with the transition of public spending from offline to online, because shopping online is easier, faster and cheaper. This study aims to determine the level of influence of promotions and brand image on purchasing decisions for Scarlett products on the Shopee marketplace. This study uses an explanatory method approach to explain the effect of promotion (X1) and brand image (X2) on purchasing decisions (Y). This study uses descriptive analysis techniques and Multiple Linear Regression Analysis. The number of samples in this study were 100 people. Samples were taken based on non-probability sampling with purposive sampling. Data collection techniques using primary data and secondary data. The results of this study indicate that promotion has a positive and significant effect on purchasing decisions for Scarlett products at the Shopee marketplace as evidenced by the t-count 4.183 > 1.984 t-table and a significance value of 0.000 <0.05; Brand image has a positive and significant effect on purchasing decisions for Scarlett products on the Shopee marketplace as evidenced by the t-count 8.016 > 1.984 t-table and a significance value of 0.000 <0.05; Promotion and brand image simultaneously influence purchasing decisions, as evidenced by the calculated F value of 95,715 > 3,939 F table and a significance value of 0.000 <0.05. The research results can be used by e-Commerce companies to optimize promotional media and build a brand image by maintaining service quality.
PERAN FINANCIAL CAPABILITY DAN FINANCIAL SECURITY DALAM MENINGKATKAN FINANCIAL SATISFACTION PEMILIK UMKM SEKTOR PARIWISATA DI MADURA
Authors: Umairoh Mayada Pasha , Gitayuda M. Boy Singgih , Purnamawati Purnamawati
Published: August 2024

This article discusses the roles of financial capability and financial security in enhancing the financial satisfaction of Micro, Small, and Medium Enterprises (MSMEs) in the tourism sector in the Madura Region. Tourism in Madura holds significant economic potential, with MSMEs playing a crucial role in local economic development. Financial satisfaction serves as a subjective indicator of an individual's financial well-being. This study employs a descriptive approach using a quantitative method. The results of multiple linear regression analysis indicate that both financial capability and financial security exert a positive and significant influence on financial satisfaction. These findings substantiate the research hypothesis and underscore the importance of enhancing financial capability and financial security among tourism MSME owners in Madura. They offer valuable insights for MSME owners, local governments, educational institutions, and other stakeholders, facilitating the support of growth in the tourism sector MSMEs in Madura.
PENGARUH IKLAN DAN HARGA TERHADAP KEPUTUSAN PEMBELIAN MELALUI MINAT BELI SEBAGAI VARIABEL INTERVENING PADA UD ANUGERAH GRESIK
Authors: Muhajir Ali
Published: August 2024

This research aims to determine the influence of advertising and price on purchasing interest, the influence of advertising and price on purchasing decisions, the influence of advertising on purchasing decisions through purchasing interest as an intervening variable and the influence of price on purchasing decisions through purchasing interest as an intervening variable at UD. Gresik Award. This research used the Purposive Sampling method with the Slovin formula so that 93 respondents could be obtained. The research was carried out with partial tests and path analysis using SPSS 25. The results of the coefficient of determination test based on the R Square value show that advertising, price and purchasing interest influence purchasing decisions by 41.4%. The results of the research show that advertising influences purchasing interest, price influences purchasing interest, advertising influences purchasing decisions, price influences purchasing decisions, advertising influences purchasing decisions through purchasing interest as an intervening variable and price influences purchasing decisions through purchasing interest as a variable. intervening.
PENGARUH PROFITABILITAS, UMUR PERUSAHAAN DAN FINANCIAL LEVERAGE TERHADAP UNDERPRICING SAHAM INITIAL PUBLIC OFFERING PADA PERUSAHAAN YANG TERDAFTAR DI BURSA EFEK INDONESIA TAHUN 2019- 2022
Authors: Setyorini Ani , Darmayanti Novi , Rachmaniyah Fatichatur
Published: August 2024

Current business progress and developments make it easy for people to recognize various investments, one of which is stocks. Investors can find out several terms in purchasing shares, one of which is the initial public offering (IPO) which is used by companies to obtain additional capital obtained from investors. This study aims to determine the effect of profitability, firm age and financial leverage on the underpricing of Initial Public Offering shares. Using a quantitative research method using a sample of 21 companies that experienced stock underpricing in 2019-2022. The data analysis technique in this study used multiple linear regression analysis using SPSS version 26. This research tested using the t test and F test. The results of this study indicate that partially profitability, firm age and financial leverage have a significant effect on initial public offering stock underpricing. Simultaneously profitability, firm age and financial leverage have a significant effect on initial public offering stock underpricing.
BELAJAR GEOMETRI DARI SUDUT PANDANG FILOSOFI EPISTIMOLOGI BAGI SISWA SD/MI
Authors: Suratiningsih Suratiningsih , Prasetyo Sigit
Published: August 2024

Learning geometry from an epistemological philosophy perspective for elementary school students is very important to implement. This research aims to provide an overview of the basic concepts of geometry in the basic education curriculum. Epistemology philosophical theory relevant to geometry learning. The practice of integrating philosophy of epistemology in geometry education for elementary school or Madrasah Ibtidaiyah students. The research method used is a qualitative research method, emphasizing data collection and descriptive data analysis. The data collection method is by collecting and selecting journal articles, books, papers that are relevant to the research topic. Data is collected and analyzed thematically according to relevant topics. The results of the research show that learning geometry is very important for elementary school and Madrasah Ibtidaiyah students. The concept of epistemological philosophy encourages students to think critically. The practice of teaching geometry from an epistemological perspective using activities to explore geometric concepts through sensory experiences is very suitable for elementary school or Madrash Ibtidaiyah students. From this research it can be concluded that this learning is able to help students form attitudes in behavior and critical thinking skills.
PENGEMBANGAN LKPD BERBASIS CONTEXTUAL TEACHING LEARNING PADA PEMBELAJARAN PENDIDIKAN PANCASILA KELAS IV SD
Authors: Hariyati Dwi Srirejeki , Yulianti Yulianti , Sulistyowati Prihatin
Published: August 2024

Teaching materials are an important component used by teachers in the learning process. With teaching materials combined with daily activities, it can help teachers easily achieve learning goals for students. One of these teaching materials is the LKPD (Student Worksheet) teaching material. The purpose of this study is to develop LKPD based on Contextual Teaching Learning in Class IV Elementary School Cooperative Lifestyle Learning and to determine the feasibility, practicality, and effectiveness of the LKPD. This type of research is a type of research and development or commonly called Research and Development (R&D). In this study, product development was carried out using a 4-D model development design developed by Thiagarajan with the stages of Define, Design, Development and Dissemination. Based on the results of this study, it shows that LKPD can increase learning interest and good learning outcomes. It can be concluded that the LKPD teaching materials based on Contextual Teaching Learning are valid, practical, and effective for use by grade V elementary school students.
UPAYA MENINGKATKAN KEMAMPUAN MEMBACA DAN MEMIRSA MELALUI MEDIA DISPLAY PADA MATERI MENGENAL HURUF ABJAD
Authors: Abdullah Tarisa T , Jusuf Harni , Pratiwi Wiwik
Published: August 2024

This research aims to improve the reading and viewing skills of grade 2 students at SDN 1 Limboto Barat on material about recognizing the alphabet. The problem identified was the low reading and viewing ability of students, where around 12 students had not reached the Minimum Completeness Criteria (KKM). To overcome this problem, this research applies display media as a learning aid. The method used in this research is Classroom Action Research (PTK) which involves four main stages: observation, planning, action, and reflection. At the observation stage, researchers identify students' problems and needs. The planning stage involves preparing learning strategies using display media. The action stage involves implementing the plans that have been prepared, while the reflection stage is used to evaluate the effectiveness of the actions taken. Data is collected through observation and tests. The results showed significant improvements in students' reading and viewing abilities. Before the action, only 44.44% of students reached the KKM. However, after using display media, the percentage of students who achieved the KKM increased to 84.71%. Based on these results, it can be concluded that the use of display media is effective in improving the reading and viewing abilities of grade 2 students at SDN 1 Limboto Barat. This research makes a positive contribution to efforts to improve the quality of learning, especially in material about recognizing the alphabet, and can be used as a reference for teachers in implementing innovative learning strategies.
IMPLEMENTASI PENDEKATAN TARL UNTUK MENINGKATKAN HASIL BELAJAR PESERTA DIDIK PADA PELAJARAN BAHASA INDONESIA
Authors: Susanti Nila Dwi , Amin Siti Maghfirotun , Muawanah Muawanah , Indrati Joeli , Idayati Nurul
Published: August 2024

Factors that influence low student learning outcomes due to less interactive learning activities and lack of variation in approaches, methods, and learning media applied in the classroom, teachers need to innovate by making improvements to improve student learning outcomes through learning with the Teaching at the right level (TaRL) approach. The method used in this study is the Classroom Action Research (CAR) method. This study was conducted in two cycles, each cycle consisting of four stages according to the Kemmis model, namely planning, acting, observing, and reflecting. Based on the results of the study, it can be concluded that the application of the TaRL approach to improve student learning outcomes can run well and is said to have been successful. This is evidenced by the results of observations of teacher activities in cycle I which reached 76% then increased in cycle II to 96%. Likewise, the results of student observations in cycle I reached 78% and increased significantly in cycle II to 90%. The learning outcomes of class IV-B students at SDN Margorejo VI/524 Surabaya experienced a very significant increase. This is proven based on the percentage of student learning outcomes completion which was 44% in the pre-cycle, then increased after the cycle I actions were carried out to 60%, and increased to 84% in cycle II.
DETERMINATION OF POSITIONS OF UKRAINE IN GLOBAL DIGITAL ECONOMY INDICES ON THE BASIS OF THE LOCAL GOVERNMENTS
Authors: Shvedun V. , Seidova-Bohoslovska E. , Kovalchuk V.
Published: August 2024

The authors determine the positions of Ukraine in global digital economy indices on the basis of the local governments. The authors indicate the following subsystems of providing the digital economy infrastructure: technical (ICT capabilities in terms of individual sectors of the economy); information and technological (digital technologies); staffing (human capital); regulatory (institutional environment); financial and economic (investment opportunities of economic entities). The authors indicate a number of generally accepted parameters that allow to determine the level of digitalization within the economy and society: Internet coverage; the use of broadband Internet; the percentage of smartphone owners; mobile Internet coverage; the share of society with digital skills, public online services, etc. The authors propose to use the following main rating indices of digitalization: Digital Economy and Society Index (DESI); Digital Evolution Index (DEI); Digital Adoption Index (DAI); ICT Development Index (IDI); Global Innovation Index (GII); Networked Readiness Index (NRI); Digitization Index of the Economy (Boston Consulting Group ‒ e-Intensity); IMD World Digital Competitiveness Index (WDCI).
FEATURES OF THE FORMATION AND IMPLEMENTATION OF THE GLOBAL ENERGY "GREEN" TRANSITION POLICY
Authors: Treskov A.
Published: August 2024

The article examines the peculiarities of the formation and implementation of the global energy "green" transition policy. The global trends in the construction of climate-neutral energy are characterized. Features of various models of formation and implementation of energy "green" transition policy in the world are determined. The directions for improving the state energy policy of Ukraine are outlined, taking into account global trends in the formation and implementation of the energy "green" transition policy in the world.
POSSIBILITIES AND EXPERIENCE IN DEVELOPING MOTORCYCLE TOURISM IN LVIV REGION: PUBLIC ADMINISTRATION ASPECT
Authors: O. Postupna , Gorkun M.
Published: August 2024

The article summarizes domestic and international experience in developing motorcycle tourism and outlines its potential for the social rehabilitation of the population. It also identifies the opportunities for developing motorcycle tourism at the regional level (using Lviv Region as an example) and clarifies the role of regional public administration bodies and tourism entities in this process.
It is understood that the development of motorcycle tourism reflects the evolution of a specific motorcycle travel culture. From its inception to contemporary forms, motorcycle tourism has evolved into a lifestyle, combining adventure, speed, and the exploration of new routes. In Ukraine, this form of tourism holds great potential due to diverse natural landscapes and historical-cultural treasures.
To further develop motorcycle tourism, the organization and hosting of regional motorcycle festivals require collaboration among public authorities, motorcycle clubs, tourism enterprises, hospitality establishments, and other stakeholders.
Considering the ongoing Russian-Ukrainian war, which creates significant obstacles to the development of motorcycle tourism in Ukraine, primarily threatening people's lives and health, the western Ukrainian regions can serve as centers for organizing such events and motorcycle trips. Therefore, motorcycle tourism is not only a promising direction for the region's tourism industry but also can become a new form of social and physical rehabilitation for individuals with war-related physical (shrapnel wounds, gunshot wounds, burns, etc.) and psychological (post-traumatic stress disorder, anxiety disorders, etc.) traumas. It provides an opportunity to shift the dominant consciousness of a traumatized individual from a depressive state to an active interest in motorcycle travel with like-minded individuals, offering relaxation and freedom of movement across diverse natural landscapes.
Forecasting Meningitis Outbreak with a Climate-Inspired Model
Authors: T. F. Aminu , O. M. Bamigbola
Published: August 2024

Recently, meningitis outbreaks have posed substantial public health issues across the world, prompting effective preventative and control measures. Therefore, this work proposes a unique method for estimating meningitis incidence by incorporating atmospheric data into a predictive model, christened as climate-based predictive meningitis model (CBPMM). The CBPMM is created using machine learning formalities, with meteorological data serving as a key component of the predictor. The model incorporates powerful prediction techniques that analyze historical data and environmental patterns comprehensively and thus, provide useful insights for early identification and proactive intervention strategies. With infection transmission rate at 0.88, carrier natural recovery rate 0.06, and the efficacy of treatment is 0.001, ; it implies that the infectious disease persists in the community. However, when ; that is, the disease is controllable. The CBPMM marks a huge step forward in meningitis surveillance, providing healthcare authorities with information to promptly limit the effect of outbreaks.
On Fitting Live-Streaming Data: A Level Three Polynomial Component Probability Model Development
Authors: C. N. Okolo , K. U. Kenneth , E. O. Emeka
Published: August 2024

A new probability distribution termed Stream distribution is proposed and studied. This distribution is a mathematical combination of level three polynomial components and exponential distribution. The mathematical and statistical properties of the development are studied, with empirical emphasis: on the inequality relationship within the measures of central tendency, and the coefficient of variation. The model parameter was estimated using the method of maximum likelihood, where the asymptotic and consistent properties are numerically studied as well. The flexibility of Stream distribution is shown, through an application to a Live-Streaming data set and showed high efficiency in the inferential performance. The distribution is therefore recommended for forecasting needs in the light of live online audience engagement.
English – Kalabari Word Formation Systems: Convergence and Divergence
Authors: E. C. Rise , E. N. Isaac
Published: August 2024

The study is designed to examine the contrast that exist in the morphological processes of word formation in English and Kalabari languages. The English language is an Indo-European language, while Kalabari is a Niger-Congo Ijoid language. The crux of the investigation is to examine the distinct morphological features in the two languages. These languages are chosen because Kalabari is the first language and English is the second language spoken in the locality. The learning of a second language oftentimes is affected by the features of the first language of the learner. Learners and speakers of one language apply rules of their native language into the second language resulting into grammatical and morphological inaccuracies. This study identifies the similarities that may enhance English learning by Kalabari speakers as well as the differences that may pose challenges to the Kalabari learner of English as a second language. The different shades of morphological processes such as compounding, affixation, conversion, backformation, reduplication, among others are treated. While both languages share some morphological processes, they also exhibit unique morphological differences. This study navigates and gets immersed in the fundamental concepts of morphology, contrastive analysis, grammar, inflection, and pedagogy. The theoretical foundation here aligns with the principles set forth by Harris and Lado (the contrastive analysis) an approach that juxtaposes different languages to identifying the distinctions and similarities in the two languages. The study makes use of descriptive research design since the study is aimed to undertake a contrastive study of the morphological processes of the two different languages. The lexicological development of Kalabari in comparison with English constitute an important launching pad to catapult the former into the technological age of the present century. This is perhaps what the Kalabari speaker, and by extension, other speakers of the Niger Congo phylum would need to be fully part of the technological inventions of his times as a world citizen.
The Use and Evaluation of Corpus-Based English Language Teaching
Authors: S. Jacobs , E. N. Isaac
Published: August 2024

This paper investigates the use and evaluation of corpus-based English Grammar teaching. The primary focus is on advancing language education methodologies by integrating corpus linguistics into pedagogical practices. Through a nuanced exploration of qualitative and quantitative dimensions, the research aims at enhancing grammar learning outcomes. The qualitative aspect employs purposeful sampling, capturing the perspectives of language learners and instructors immersed in corpus-based teaching. The quantitative phase employs a randomized controlled trial to evaluate the impact of corpus-based teaching on language proficiency. Rigorous pre-and post-assessments, complemented by statistical analysis, illuminate the quantitative gains achieved by learners exposed to this innovative pedagogical approach. A critical component of the study lies in the meticulous selection of the corpus. Criteria such as size, genre diversity, and representativeness guide this process, ensuring a comprehensive examination of linguistic features. The ethical dimensions of the research are upheld through strict adherence to informed consent, participant confidentiality, and privacy standards. The research timeline delineates distinct phases, allowing for systematic progress from corpus selection to data analysis. Theoretical framework underpinning CBLT is a complex and dynamic amalgamation of linguistic theories but in this thesis, we use the communicative language teaching framework (CLT). The research design encompasses a quasi-experimental approach, employing a mixed-methods approach combining qualitative measures of language proficiency assessments with qualitative insights gathered through surveys and interviews. The findings are that the use of CBLT in teaching aspects of English grammar is more result oriented than the use of traditional teaching methods. This study has not only contributed to the theoretical foundations of language education but also provide practical insights for educators and policymakers seeking to optimize language learning strategies.