bluuebunny/crossref_metadata_2025_split huggingface dataset:
Eigenvalues and bifurcation for Neumann problems with indefinite weights
Authors: Calanchi Marta , Ruf Bernhard 
Published: July 2023

We consider eigenvalue problems and bifurcation of positive solutions for elliptic equations with indefinite weights and with Neumann boundary conditions. We give complete results concerning the existence and non-existence of positive solutions for the superlinear coercive and non-coercive problems, showing a surprising complementarity of the respective results.
For more information see https://ejde.math.txstate.edu/special/01/c4/abstr.html
Bifurcation from infinity with oscillatory nonlinearity for Neumann problems
Authors: Chhetri Maya , Mavinga Nsoki , Pardo Rosa 
Published: July 2023

We consider a sublinear perturbation of an elliptic eigenvalue problem with Neumann boundary condition. We give sufficient conditions on the nonlinear perturbation which guarantee that the unbounded continuum, bifurcating from infinity at the first eigenvalue, contains an unbounded sequence of turning points as well as an unbounded sequence of resonant solutions. We prove our result by using bifurcation theory combined with a careful analysis of the oscillatory behavior of the continuum near the bifurcation point.
For more information see https://ejde.math.txstate.edu/special/01/c5/abstr.html
mean value property and zeros of holomorphic functions (Gauss, Poisson, Bolzano, and Cauchy meet in the complex plane)
Authors: Mawhin Jean 
Published: July 2023

An existence condition for a zero of holomorphic functions in a disk is stated and proved in a very simple way using the mean value property. It contains as special cases Bolzano's theorem and Brouwer fixed point theorem in a disk for holomorphic functions, the fundamental theorem of algebra and an asymptotic condition for the existence of zeros of transcendental entire functions. An elementary proof of the used mean value property is given.
For more information see https://ejde.math.txstate.edu/special/01/m2/abstr.html
Oscillatory solutions and critical exponents for fully nonlinear equations
Authors: Pacella Filomena , Stolnicki David 
Published: July 2023

We study existence and nonexistence of radial positive solutions for a class of fully nonlinear equations involving Pucci's extremal operators. By analyzing the periodic orbits of an associated dynamical system we are able to give estimates on the range of the exponents for which entire oscillating solutions exist. This, in turn, allows to improve previous bounds on the critical exponents defined in [2].
For more information see https://ejde.math.txstate.edu/special/01/p1/abstr.html
Twin positive solutions for resonant singular (p,q)-equations
Authors: Onete Florin I. , Papageorgiou Nikolaos S. , Radulescu Vicentiu D. 
Published: July 2023

We consider a Dirichlet (p,q)-equation with a reaction having the combined effects of a singular term and of a resonant perturbation. Using an auxiliary problem to bypass the singularity and variational tools from critical point theory, with truncation and comparison techniques, we show that the problem has two positive smooth solutions. For more information see https://ejde.math.txstate.edu/special/01/r1/abstr.html
asymmetric problem at resonance with a one-sided Ahmad-Lazer-Paul condition
Authors: Recova Leandro L. , Rumbos Adolfo J. 
Published: July 2023

In this article, we study the semilinear elliptic boundary value problem $$\displaylines{ -\Delta u = -\lambda_1u^{-}+g(x,u),\quad \text{in }\Omega;\cr u =0,\quad \text{on }\partial\Omega, }$$ where \(u^{-}\) denotes the negative part of \(u:\Omega\to \mathbb{R}\); \(\lambda_1\) is the first eigenvalue of the N-dimensional Laplacian with Dirichlet boundary conditions in a connected, open, bounded set \(\Omega\subset\mathbb{R}^N\), \(N\geq 2\); and \(g: \overline{\Omega}\times\mathbb{R}\to\mathbb{R}\) is a continuous function. Assuming a one-sided Ahmad-Lazer-Paul condition, we establish conditions for existence and multiplicity of solutions by using variational methods and infinite-dimensional Morse Theory
For more information see https://ejde.math.txstate.edu/special/01/r2/abstr.html
Effect of Financial Literacy and Fintech Payment of Financial Management Behavior with Internal Locus of Control as Moderator
Authors: Hidayati Aulia Riska , Nugroho Dwiyanjana Santyo 
Published: July 2023

This study examines private university students in West Jakarta which aims to determine the effect of financial literacy and fintech payments on financial management behavior with internal locus of control as a moderator variable. The dependent variables used are financial literacy and fintech payments. The analysis of this study used multiple linear regression with SPSS 27 (Statistical Package for Social Science). The results of this study indicate that: (a) financial literacy influences financial management behavior; (b) fintech payments affect financial management behavior; (c) internal locus of control strengthens the relationship between financial literacy and financial management behavior; (d) the internal locus of control strengthens the relationship between fintech payments and financial management behavior.
Keywords:financial literacy, fintech payments, financial management behavior, locus of control
Analisis Tingkat Kesejahteraan Masyarakat di Desa Tebing Batu Kecamatan Sebawi Kabupaten Sambas Kalimantan Barat
Authors: Ariska Nurul , Wahyuni Sri , Ronaldi Ronaldi 
Published: July 2023

Penelitian ini dilakukan untuk mengetahui tingkat kesejahteraan masyarakat di Desa Tebing Batu. Penelitian ini memaparkan tingkat kemiskinan yang berada di Desa Tebing Batu,yaitu terdapat di Dusun Tebing Rubuh. Dusun Tebing Rubuh merupakan wilayah yang menerima bantuan PKH terbanyak dibandingkan dengan dusun-dusun yang ada di Desa Tebing Batu. Penelitian ini merupakan jenis penelitian kuantitatif dengan pendekatan analisis statistik inferensial. Hasil penelitian ini menunjukkan bahwa di Desa Tebing Batu dari 37 sampel yang digunakan dalam penelitian ini terdapat 20 orang yang tergolong ke (KS l), 7 orang yang tergolong ke (KS ll), 8 orang yang tergolong ke (KS lll), dan ada 2 orang yang tergolong ke (KS lll) plus. Sebagian besar pekerjaan masyarakat di Desa Tebing Batu Dusun Tebing Rubuh yang berasal dari peserta tahapan keluarga sejahtera I, II, III dan III plus adalah pekebun dan petani.
PERANCANGAN KONSEP VISUAL PROTOTYPE USER INTERFACE GAME HERO OF PANDEMIC SEBAGAI MEDIA INTERAKTIF
Authors: Berliana Hilya Rahma , Ramdhan Asep 
Published: July 2023

Pada era digital saat ini berbagai media pembelajaran semakin menarik dan beragam, salah satunya adalah aplikasi pada smartphone. Pembelajaran menggunakan game adalah salah satu cara agar pembelajaran dapat lebih menyenangkan dan mudah dipahami. Pada perancangannya diperlukan user interface dan memiliki fungsi serta peranan penting dalam media elektronik. User interface merupakan alat atau tools penghubung antara pengguna (user) agar dapat mudah dan mengerti menggunakan sebuah media digital aplikasi. Tujuan dari perancangan prototype ini adalah untuk membuat user interface yang membantu untuk user atau target audiens dapat berinteraksi dengan mudah juga sebagai pembelajaran dengan cangkupan batasan materi tentang virus yaitu Sars-Cov-2 pengetahuan umum dengan materi sederhana kepada anak-anak berusia 10-15 tahun dengan cara yang menyenangkan.
Perancangan Instalasi Pengolahan Air Limbah Domestik pada Industri Pertambangan PT X
Authors: Soyan Rhesa Valerio , Sofiyah Evi Siti , Zahra Nurulbaiti Listyendah 
Published: July 2023

Kegiatan industri pertambangan pada PT X menghasilkan air limbah domestik yang terdiri dari blackwater dan greywater. Fasilias di PT X yang menghasilkan air limbah domestik adalah hunian pekerja, kantor, kantin, dan binatu (laundry). Sumber greywater berasal hunian pekerja, kantin, dan binatu. Sedangkan blackwater berasal dari toilet hunian pekerja dan kantor. Efluen air limbah masih melebihi baku mutu. Instalasi Pengolahan Air Limbah Domestik (IPALD) dibutuhkan untuk mengolah air limbah domestik agar dapat memenuhi baku mutu. Pada perancangan ini diawali dengan perhitungan debit air limbah domestik dari setiap fasilitas pada PT X, kemudia dilakukan analisis karakteristik greywater dan blackwater. Data debit dan karakteristik air limbah tersebut dijadikan sebagai dasar acuan dalam perhitungan unit IPALD. Unit IPALD yang digunakan yaitu oil and grease trap, bak pengmpul, biofilter anaerob-aerob, bak pengendap, dan desinfeksi. Efisiensi untuk unit oil and grease trap adalah 95%, biofilter anaerob 85% untuk BOD dan COD, biofilter aerob 80% untuk BOD dan COD, bak pengendap 90% dan 75% untuk ammonia dan TSS, dan unit desinfeksi 95% untuk total koliform. Berdasarkan perancangan ini air limbah hasil pengolahan nilainya telah memenuhi baku mutu
Current Situation of Solid Waste Management to Archive Sustainability in Klungkung Regency, Bali
Authors: Suhardono Sapta , Septiariva Iva Yenis , Prayogo Wisnu , Suryawan I Wayan Koko , Sari Mega Mutiara 
Published: July 2023

Most of the area in Klungkung Regency has a waste management system that needs to meet technical requirements regarding the compartment, sorting, collecting, transporting, and processing. Coverage of handling urban waste is still far from the target of 80% in 2019 (46% in 2013), and the amount of waste generation that is still recycled is still minimal (4.95 m3 in 2017). This research aims to make a master plan or strategy implemented to improve service coverage and the quality of solid waste management in the future. This research was conducted by conducting a direct survey and secondary data collection. The strategy adopted is to increase the utilization of waste infrastructure and facilities; increasing the capacity of solid waste facilities according to service targets; improving the quality of landfill management in the direction of sanitary landfills; developing regional final processing site management, and applying waste handling technology that is appropriate and environmentally friendly. The Millennium Development Goals (MDGs) contain the seriousness of improving sanitation conditions, which require increased public access to sanitation facilities in half of the population without access to sanitation. Increased population access to proper sanitation (domestic wastewater, solid waste and environmental drainage) to 100% at the level of basic needs.
Spatial Market Integration of Major Copra Markets in India
Authors: Abinaya R. , Easwaran R. Salvadi , Shivakumar K. M. , Prahadeeswaran M. , Raja N. 
Published: July 2023

Aim: The main aim of the study is to estimate the degree of market integration among the selected major Copra markets in India.
Place and Duration of Study: The study was carried out using the secondary data of average monthly prices of copra obtained from the AGMARKNET website from the period of 2014-2021 for Tamil Nadu and Karnataka. Copra price series data of Tamil Nadu (Anaimalai, Avalpoondurai, and Vellakoil markets) and Karnataka (Tiptur market) has been utilized for the study.
Methodology: The time-series econometric tools including the Augmented Dickey-Fuller (ADF) test, Johansen cointegration test, and Granger causality test were used for analyzing the level of market integration. E-views software has been utilized to perform the entire analysis.
Results: The unit root effects were applied to the price series for copra in the selected markets, and they were stationary at their first difference. The long-run equilibrium relationship among the copra markets revealed that the selected markets were integrated with each other. Tiptur market exhibited a bidirectional causational relationship with Anaimalai, Avalpoondurai, and Vellakoil markets. The Granger Causality test revealed the Tiptur market as the lead market, as it influenced the prices of Anaimalai, Avalpoondurai, and Vellakoil Copra markets.
Conclusion: India's coconut market is prone to volatility and uncertainty due to frequent price fluctuations. Price changes typically result from altered market conditions brought on by seasonal and annual variations in output, in addition to competition from other edible oils. The government can put measures into place to lessen price fluctuations with the aid of integrated market information and the information would also benefit the Copra producers and other market players to select the most effective market.
Exploring the Impacts of Menstrual-Pelvic Pain on School Activity in Rural Secondary School Girls
Authors: Obiekwe Sochima Johnmark , Ezeugwunne Ifeoma Priscillia , Ekwebene Onyeka Chukwudalu , Nwaugochi Ifeanyi Emmanuel , Edeh Gabriel Chidera , Modum Ezenwa Robinson , Nwoye Christian Chukwunulu , Okechukwu Iheohakara Franklin 
Published: July 2023

Aims: Pelvic pain (PP) during menstruation (Dysmenorrhea) is one of the common complaints of women. menstruation has a great negative impact on the quality of life of women both psychologically, behavioural and social well-being. This study is to determine the prevalence of PP during menstruation among secondary school girls.
Methodology: A cross-sectional study design conducted among female students at some selected high schools in Anambra state, South-eastern Nigeria in February 2023. A total of 392 study participants were recruited using a convenience sampling technique. A pretested self-administered structured questionnaire was employed. Microsoft excel and SPSS version 26 were used for data entry and analysis respectively.
Results: 392 female adolescent high school students aged between 8-19 years old with a mean age at menarche 12.85±1.47 years. 58.9% reported having their menstrual bleeding lasting for 4 days. The prevalence of PP during menstruation was 86.31% with 29.90% with a numerical pain rating of 10. 39.20% reported taking painkillers gotten over the counter, 71.43% reported the pain affecting their activities in school, majority 32.7% don’t socialize with their classmate and 32.0% do not concentrate in classes. While 29.4% do not participate in school outdoor sports activities, 20.3% don’t participate in other school social activities. Statistically significant associations existed between PP during menses and age, age at menarche, bleeding length and bleeding intensity (p<0.05). The school participation of Participants with severe PP during menses were significantly affected (p=0.0001).
Conclusion: PP during menstruation was highly prevalent in this study, and highly affected the students’ participation in school activities. The implication of this study highlights the importance of raising awareness, improving access to healthcare services, integrating menstrual health education into the curriculum, and adopting a multidisciplinary approach to support affected adolescents.
Adverse Events Following COVID-19 Vaccination in Anambra State, South East Nigeria
Authors: L. Obi-Nwosu Amaka , Eze Eze Chijioke , C. Ibeh Christian , O. Nwosu Betrand , I. Ezemenahi Sylvia , C. Azudialu Bede , M. Ulochukwu Chinyere , D. Obi-Nwosu Ifechukwu 
Published: July 2023

The use of safe and effective vaccination is critical to control of pandemics. Vaccines remain the bedrock in management of infectious diseases outbreaks. There has always been hesitancy to vaccination due to the fear of adverse events. It is therefore necessary that post vaccination adverse events be studied for effective enlightenment of the general populace.
Objective: We aimed to investigate the adverse reactions following COVID-19 vaccination in Anambra state, South East Nigeria.
Methods: Using a cross-sectional study design, 433 subjects aged 18years or older who had received any dose of the four COVID-19 vaccines (Moderna, Astra Zeneca, Pfizer and J&J (Janssen) were selected using a multi-stage sampling technique. The subjects were interviewed about COVID-19 vaccine related adverse reactions using self-administered questionnaire. Descriptive statistics (mean, standard deviation) and analytical statistics were performed and level of significance set at < 0.5 using SPSS V24.
Results: Of the 433 subjects finally studied, 62.8% were females and 22.4% were married. About 69% of them had tertiary education. Those who received the second dose of their respective vaccines were 44.8% while 11.5% had received a booster dose. Approximately half (50.3%) of the COVID-19 vaccines had adverse events. The most common types of adverse events (AEs) were local pain at injection site (62.1%) followed by headache (54.3%) and then fatigue (50.1%). Majority of the adverse events were mild to moderate in severity. Those who had only local adverse events were 70.2% while 45% had systemic adverse events.
Conclusion: In this study, severe adverse events were rare, even after the second dose. Most of the adverse events were mild to moderate in severity and therefore awareness campaign should be created to enlighten the community about the adverse effects of COVID-19 vaccines.
Method Development and Validation of UV-Spectrophotometric Estimation of Hydroxychloroquine Sulphate in Bulk and Pharmaceutical Dosage Form
Authors: Masne Tejaswini , Rangari Shyam , Gupta Krishna , Umekar Milind 
Published: July 2023

Aims: The devised method for estimating hydroxychloroquine sulphate in bulk and pharmaceutical dose forms (tablets) is the subject of this work. The method can therefore be applied to regular quantitative analysis and stability. The following describes the planned work's goal and scope:

To create an appropriate spectrophotometric method for tablet-based hydroxychloroquine sulphate estimation.
Carry out the method's validation.

Methodology: These techniques include the area under curve (AUC) method-I and the A1% solution method based on absorbance measurement, or method-II, both of which are chosen at wavelengths of 329.4 nm using a UV-visible spectrophotometer with a 1 cm matched quartz cell and 0.01N acetic acid with water as a solvent.
Results: Plots of the hydroxychloroquine sulphate absorption spectra in 0.01N acetic acid were made. 329.4 nm was found to be the average maximum. With correlation coefficients of 0.9992 and 0.999 (r2>0.999) for AUC and 1%, respectively, and a linear connection between the absorbance and drug concentration in concentration ranges of 5-35 g/mL, it is clear that the method is linear. The percentage of medication calculated by various methods was close to 100.12, and 99.41% of the results were consistent with the label claim of the commercially available tablet formulation. As per ICH requirements, the validation parameter research was completed.
Conclusion: The described UV methods offer good accuracy and precision with reduced limits of detection and quantification. They are straightforward, trustworthy, and highly selective. These disclosed methods are ideal for routine quantitative analysis in pharmaceutical dosage forms due to the decreased time required for analysis of hydroxychloroquine sulphate. The time-saving, low-cost alternative to the expensive high-performance liquid chromatographic technology is the applied spectrophotometric approaches.
Feasibility of Drain Discharge Under 50 M Lateral Spacing Controlled Subsurface Drainage in Saline Vertisols of TBP Command Area
Authors: Meti Hanamantappa , Vishwanath J. , Balanagoudar S. R. , Veeresh H. , Karegoudar A. V. 
Published: July 2023

Surface and subsurface drainage discharge water from irrigated agriculture field is normally varies compared with the quality of the canal water supply as the drain discharge water from different locations or facilities will varied in their quality characteristics. Hence, quality assessment or feasibility studies of drain discharge both in short and long term adoption of both conventional and controlled SSD under different drain spacing is prerequisite for its reuse in crop production and efforts are being made elsewhere for reuse of drainage discharge in crop production. Such, feasibility studies on characterization of drain discharge from different subsurface drainage systems are lacking in TBP command area. Hence, it is proposed to conduct this experiment. A plot experiment was conducted during rabi -2021 at Agricultural Research Station, Gangavati (Karnataka) to study the the characterization of drain discharge water for its reuse as an irrigation water. The experiment was laid out as a conventional and controlled subsurface drainage system (SSD). Among the treatments, the collected water samples from six different sampling stations revealed that, drain discharge under conventional subsurface drainage system (SSD) varied from 3.66 to 0.63 compared to 1.38 to 0.42 mm/day under controlled subsurface drainage system. Electrical conductivity of drain discharge water under conventional SSD varied from 3.89 to 1.24 ds/m as against 1.01 to 0.81 ds/m under controlled SSD respectively. While, salt output was varied from 29.0 to 11.0 under conventional compared to 16.5 to 2.5 kg/ha under controlled SSD system. Finally, the subsurface drainage system drain water samples were not suitable for reuse as irrigation water to paddy in the R/S season as per the classification of irrigation water quality particularly for poorly drained black soils in the TBP command area.
Nutrient Status of Acid Sulphate Soils of Upper Kuttanad of Kerala, India
Authors: Amrutha K. K. , Beena V. I. , Geetha P. 
Published: July 2023

Chemical characterization of acid sulphate soils of Upper Kuttanad, Kerala was done to study its present nutrient status due to the impact of heavy flood that occurred in 2018. Extreme acidity is the major issue with this type of soil. Among the collected soil samples, 53.33 per cent of soil samples fall under very strongly acidic group (4.5 to 5) and 33.33 per cent comes under strongly acidic category (5.1 to 5.5). Lower values of EC in Upper Kuttanad indicate that this area is less affected by saltwater intrusion. More than 90 per cent of the samples were rich in organic carbon content. Among the major nutrients, 40 per cent of the soil samples recorded low available P content (<10 kgha-1). The availability of potassium, calcium, and magnesium increased with flooding. Almost all the samples collected from the acid sulphate soils of Upper Kuttanad showed high available sulphur status. It ranged from 20.20 to 3361.50 mgkg-1. The hike in micronutrient status showed the impact of flooding in these locations. The cation exchange capacity of the collected soil ranged from 5.92 to 30.64 cmol (+) kg-1 and showed a positive correlation with organic carbon (0.779***), available potassium (0.571*) and available iron (0.717*). This paper helps in understanding the present nutrient status in acid sulphate rice soils of Upper Kuttanad after the flood and adoption of suitable management practices.