bluuebunny/crossref_metadata_2025_split huggingface dataset:
Characteristics and utilization of black soils in Indonesia
Authors: Sulaeman Yiyi , Sukarman Sukarman , Neswati Risma , Nurdin Nurdin , Basuki Tony 
Published: July 2023

Black soils store a high amount of soil organic carbon (SOC) and play a crucial role in climate change, food security, and land degradation neutrality. However, data and information regarding black soils in tropical regions, including Indonesia, are limited. This study aimed to characterize and identify the utilization of black soils in Indonesia based on legacy soil survey data. We collated 142 soil pedon samples of Mollisols from articles, technical reports, and existing datasets. The site information (site position, elevation, land use type, parent material) and selected physicochemical properties were stored in a spreadsheet, from which exploratory data analysis was conducted. The result showed that the median SOC content was 1.53%, ranging from 0.6 to 8.2 %; cation exchange capacity was 30 cmol kg<sup>-1</sup>, ranging from 9 to 95 cmol kg<sup>-1</sup>; base saturation was 87%, ranging from 11 to 100 %; and bulk density was 1.21 g cm<sup>-3</sup>, ranging from 1.13 to 1.36 g cm<sup>-3</sup>. Other soil characteristics (particle size distribution, exchangeable bases, pH, pore, and water retention) varied with horizon type and land use/land cover. The black soils have been used for paddy fields, dryland farming, and gardens with low management intensity. Main cultivated crops include rice (<em>Oryza sativa</em>), corn (<em>Zea mays</em>), cassava (<em>Manihot esculenta</em>), sweet potato (<em>Ipomoea batatas</em>), and nutmeg (<em>Myristica fragrans</em>), clove (<em>Syzygium aromaticum</em>), coconut (<em>Cocos nucifera</em>), and cocoa (<em>Theobroma cocoa)</em>. Threats to black soil functions include soil erosion, carbon loss, and nutrient imbalance. Soil and water conservation measures, integrated soil nutrient management, and agroforestry are among the best land management practices for black soils.
Special Issue on Recent Trends in Additive Manufacturing
Authors: Furumoto Tatsuaki , Sasahara Hiroyuki 
Published: July 2023

Additive manufacturing (AM) has undergone rapid development in the past decade. Owing to its capacity to produce complex and functional parts in various industries, it has been recognized as a remarkable scientific and industrial technique. It is used to enhance weight-saving production and reduce the number of parts, with metal-based AM techniques in particular being recognized as the most promising AM techniques developed thus far. This is because of their high potential for direct production through the selective solidification of metal materials from three-dimensional, computer-aided design data. The medical, aerospace, and part molding industries are some of the many expected to reap particular benefit from the ability to produce high-quality models with reduced manufacturing costs and lead times.
The objective of this special issue is to collect recent research works focused on recent trends in AM. This issue includes 7 papers covering the following topics:
- Metal-based powder bed fusion using a laser beam (PBF-LB/M)
- Wire and arc-based AM (WAAM)
- Fused deposition modeling (FDM)
This special issue is expected to help readers understand the recent trends in AM, leading in turn to further research on AM.
We deeply appreciate the contributions of all authors and thank the reviewers for their incisive efforts.
PENGUATAN KETAHANAN KELUARGA MELALUI BIMBINGAN PERKAWINAN CALON PENGANTIN (Studi Kasus Di Kantor Urusan Agama Kecamatan Pesantren Kota Kediri)
Authors: Kholilurrohman Ibrohim 
Published: July 2023

Penelitian ini mengkaji tentang penguatan ketahanan keluarga melalui bimbingan perkawinan bagi calon pengantin di Kantor Urusan Agama Kecamatan Pesantren Kota Kediri. Penelitian ini bertujuan untuk mengetahui seberapa pengaruh bimbingan pernikahan terhadap penguatan ketahanan keluarga, dengan metode penelitian Kualitatif untuk mengambil data dari informan di KUA Kecamatan Pesantren, pasangan pengantin yang mengikuti dan yang tidak mengikuti bimbingan perkawinan. Hasil penelitian ini adalah a). Proses pelaksanaan bimbingan perkawinan di KUA Kecamatan pesantren sudah berjalan, namun penerapan peraturannya belum maksimal, karena masih ada calon pasangan pengatin yang tidak ikut bimbingan perkawinan. Padahal, secara peraturan, bimbingan perkawinan wajib dilaksanakan bagi calon pengantin yang hendak melangsungkan perkawinan b.) Pengaruh bimbingan perkawinan terhadap penguatan ketahanan keluarga sangat banyak. Karena dari mengikuti bimbingan perkawinan tersebut, calon pengantin mengetahui hal-hal yang belum di ketahui tentang pernikahan dan berumah tangga. Kesimpulannya, yang mengikuti bimbingan, masih ada yang bingung tentang perkawinan, apalagi yang tidak mengikuti bimbingan perkawinan. Rata-rata pengangantin yang mengikuti bimbingan perkawinan, memiliki nilai ketahanan yang baik. Meskipun ada yang tidak mengikuti bimbingan perkawinan tapi nilai ketahanannya baik, itu karena mereka mempelajari mater-materi tentang perkawinan dan rumah tangga secara mandiri, secara tidak langsung mereka juga mengikuti bimbingan, akan tetapi tidak mendapat legalitas dari KUA.

Kata kunci : Bimbingan Perkawinan, Ketahanan Keluarga, Calon Pengantin
Experimental study on the electro oxidation-adsorption process for removing chlorate from sewage treatment plant effluent
Authors: Park Sungwon , Han Ihnsup , Oh Heekyong 
Published: July 2023

Abstract
Wastewater treatment plants face the challenge of controlling disinfection by-products, such as carcinogenic trihalomethanes, which are formed when disinfectants react with organic compounds and humic substances in water sources. To ensure the prevention of water pollution, effective control measures must be implemented to mitigate the release of these harmful by-products into water bodies. This study focused on the application of an electrooxidation-adsorption hybrid process for the treatment of chlorate, a prevalent disinfection by-product found in sewage plant effluent. The investigation aimed to evaluate the impact of various parameters including current density, empty bed contact time (EBCT), granular activated carbon (GAC) injection amount, electrode installation spacing, and pH on the treatment efficiency. Optimal operating conditions were determined, including a current density of 75 A/m2 , an EBCT of 5 minutes, a GAC injection amount of 2.0 w/v (%), an electrode installation spacing of 2 cm, and a pH of 2. These conditions demonstrated effective removal of disinfection by-products, even in the presence of coexisting pollutants. The findings highlight the viability of the electrooxidation-adsorption process as a promising approach for the treatment of disinfection by-products in sewage treatment plant effluent. This research contributes to the development of efficient strategies for mitigating the environmental impact of wastewater treatment processes and ensuring the protection of public water resources.
Compulsory Education Reform, Family Barriers and Female Labour Supply in Turkey: Regression Discontinuity Design with Heterogeneous Treatment Effects
Authors: Zayim Gülen Derya , Kayaoğlu Ayşegül 
Published: July 2023

Abstract
This study investigates heterogeneous treatment effects of compulsory education reform in Turkey on demand for education and labour supply decisions across gender groups and family status using a Regression Discontinuity Design. Although increasing the compulsory schooling years has successfully narrowed the gender gap in labour supply, we find that this effect was only through higher labor force participation of single women and women without children. In other words, our results signify that marriage and fertility have shadowed the human capital effect of higher education. Therefore, policymakers should mainly focus on supply-side policies to mitigate family barriers to raise female labour force participation in Turkey.
JEL Classification: J12, J13, J22, J24
Resting heart rate is associated with the prevalence of chronic kidney disease in Korean adult: The Korean National Health and Nutrition Survey
Authors: Park Dong-Hyuk , Chung Choon Hee , Lee Dong Hoon , Lee Eun Young , Jeon Justin 
Published: July 2023

Abstract
Background
Chronic kidney disease (CKD) poses a significant health challenge, yet early detection remains difficult. Resting heart rate (RHR) has been shown to be a reliable indicator of type 2 diabetes, prompting interest in its potential as an independent predictor of CKD. This study aimed to investigate the association between RHR and CKD prevalence, as well as explore potential interactions between RHR and other risk factors for CKD in a sample of 25,246 adults.
Methods
Data from the Korean National Health and Nutrition Examination Survey (2011–2014) were utilized for this study, with 19,210 participants included after screening. Logistic regression analysis was employed to examine the relationship between RHR and CKD prevalence. Stratified analyses were conducted based on known risk factors for CKD.
Results
Participants with an RHR ≥ 90 bpm exhibited a 2.07-fold [95% confidence interval (CI): 1.30–1.73] and 2.22-fold higher prevalence of CKD in men and women, respectively, compared to those with an RHR < 60 bpm. The association between RHR and CKD prevalence was particularly pronounced in younger participants (40–59 years vs. ≥60 years), individuals with diabetes (yes vs. no), and those with a longer duration of diabetes (≥ 7 years vs. <7 years).
Conclusion
Elevated RHR was found to be significantly associated with a higher prevalence of CKD in both men and women, independent of demographic, lifestyle, and medical factors. These findings suggest that RHR could serve as a valuable predictor for undiagnosed CKD.
Systematic Review on Methods for OTN Network Planning
Authors: Silva Gleyse K. , Souza Rafael L. , Ribeiro Sandro , Filho Carmelo J. A. Bastos , Chaves Daniel A. R. 
Published: July 2023

Abstract
This paper presents a systematic review applying the PRISMA methodology with a Systematic Review Protocol (SRP) on the definitions of methods, techniques, and algorithms used for optical transport network (OTN) planning. OTN has been extensively used worldwide, and many issues still need to be studied. We conducted a comprehensive review of the relevant studies to provide insight into the recent progress and the research gaps in the field. According to the analyzed studies, research questions and open issues are associated with using Machine learning, Resilience, and Energy Consumption. These approaches are highlighted as future research directions to enable the development of OTN planning.
Frequency Reconfigurable Antenna Performance Analysis with Various Light Sources
Authors: REJI V , Manimegalai C. T. 
Published: July 2023

Abstract
This research presents a frequency reconfigurable antenna analysis for wireless applications using multiple light sources. The antenna is constructed on a Roger substrate with (44x28) mm2 dimensions. The antenna comprises two parallel tuner arrangements in addition to a V-shaped radiating section. Two optical PIN photodiodes are connected to the two parallel monopole tuners, which serve as the antenna's switching component and are utilized to adjust the resonant frequency. These two PIN photodiode switches work in the 600–1050 nm wavelength range. To analyze the antenna performance, four different optical sources are used. They are White colour LED lamp, 650 nm optical fiber, red LEDs, and IR LEDs. In every cases, the antenna performance analysis are carried out for all the four logic state of the switches (00, 01,10,11). Under white lamp test conditions, the antenna's maximum gain is 6 dBi, and when red LEDs are employed as the optical source, its maximum bandwidth is 21%. The antenna reconfigurable frequencies are 3.5GHz and 5-5.8GHz (5, 5.2, 5.5, 5.8 GHz).
Minding menopause in patients with cognitive impairment: a patients' perspective and reflections on clinical practice
Authors: Thomas Elias , Verdonk Petra , Rhodius-Meester Hanneke , Muller Majon 
Published: July 2023

Abstract
Many women experience impairment in cognitive function during perimenopause. These symptoms are often not attributed to perimenopause by women themselves, by family and friends, and by health care professionals. In this piece, we present a case in which perimenopausal complaints were attributed to early dementia and discuss mechanisms contributing to the low level of awareness of perimenopausal amongst patients and clinicians. Stigma amongst women and health care professionals impairs the recognition of perimenopausal complaints, and consideration of treatment options by clinicians. We advocate for increased awareness amongst patients and physicians by increasing education and incorporating potential menopause-related symptoms in general clinical guidelines.
On the class of unbounded-U-Dunford-Pettis operators
Authors: Zraoula Larbi , Ouba Issam , H'michane Jawad , Wahbi Bouazza El 
Published: July 2023

Abstract
The aim of this paper is to introduce and study a new class of operators between Banach lattices based on the unbounded norm topology, nominated "unbounded-U-Dunford-Pettis operators". Namely, we give some characterizations of this class, we study the relations between this class and other classes of operators known in the literature of operator theory on Banach lattices, and we study the duality problem for this class of operators.
2010 Mathematics Subject Classification. 46B42, 47B60, 47B65.
Laser Diode based THz-TDS System with 133 dB peak Signal-to-Noise Ratio
Authors: Cherniak Vladyslav , Kubiczek Tobias , Kolpatzeck Kevin , Balzer Jan C. 
Published: July 2023

Abstract
Terahertz time-domain spectroscopy (THz-TDS) has emerged as a powerful and versatile tool in various scientific fields. These include – among others – imaging, material characterization, and layer thickness measurements. While THz-TDS has achieved significant success in research environments, the high cost and bulky nature of most systems have hindered widespread commercialization of this technology. Two primary factors contributing to the size and cost of these systems are the laser and the optical delay unit (ODU). Consequently, our group has focused on developing THz-TDS systems based on compact monolithic mode-locked laser diodes (MLLDs). The ultra-high repetition rate (UHRR) of the MLLD has the added benefit that it allows us to utilize shorter ODUs, thereby reducing the overall cost and size of our systems. However, achieving the necessary precision in the ODU to acquire accurate terahertz time-domain signals remains a crucial aspect.To address this issue, we have developed and enhanced an interferometric extension for UHRR-THz-TDS systems. This extension is inexpensive, compact, and easy to incorporate. In this article, we present the system setup, the extension itself, and the algorithmic procedure for reconstructing the delay axis based on the interferometric reference signal. We evaluate a dataset comprising 10,000 signal traces and report a standard deviation of the measured terahertz phase at 1.6 THz as low as 3 mrad. Additionally, we demonstrate a remaining peak-to-peak jitter of only 20 fs and a record-high peak dynamic range of 133 dB after averaging. The method presented in this paper allows for simplified THz-TDS system builds, reducing bulk and cost. As a result, it further facilitates the transition of terahertz technologies from laboratory to field applications.
Nano-Scale Charge Trapping Memory based on Two-Dimensional Conjugated Microporous Polymer
Authors: Nayfeh Ammar , Rezk Ayman , Ansari Md. Hasan , Ranjeesh Kayaramkodath , Gaber Safa , Kumar Dayanand , Merhi Areej , Kaafarani Bilal R. , Hassine Mohamed , Elatab Nazek , Shetty Dinesh 
Published: July 2023

Abstract
There is a growing interest in new semiconductor nanostructures for future high-density high-performance flexible electronic devices. Two-dimensional conjugated microporous polymers (2D-CMPs) are promising candidates because of their inherent optoelectronic properties. Here, we are reporting a novel donor-acceptor type 2D-CMP based on Pyrene and Isoindigo (PI) for a potential nano-scale charge-trapping memory application. We exfoliated the PI polymer into ~ 2.5 nm thick nanoparticles (NPs) and fabricated a Metal-Insulator-Semiconductor (MIS) device with PI-NPs embedded in the insulator. Conductive AFM (cAFM) is used to examine the confinement mechanism as well as the local charge injection process, where ultrathin high-κ alumina supplied the energy barrier for confining the charge carrier transport. We have achieved a reproducible on-and-off state and a wide memory window (ΔV) of 1.5 V at a relatively small reading voltage. Furthermore, a theoretical analysis is developed to affirm the measured charge carriers’ transport and entrapment mechanisms through and within the fabricated MIS structures. The PI-NPs act as a nanoscale floating gate in the MIS-based memory with deep trapping sites for the charged carriers. Moreover, our results demonstrate that the synthesized 2D-CMP can be promising for future low-power high-density memory applications.
Adaptive control and Modulation Techniques of Five-Level Diode-Clamped-Based Shunt Active Power Filters under Disturbed System Voltages
Authors: Mohammadtabar Kaveh , Fereidouni Alireza 
Published: July 2023

Abstract
This paper aims to improve the performance of five- level neutral-point-clamped-based (FL-NPC) shunt active power filters (SAPFs) that employ the direct current regulation (DCR) strategy for compensating nonlinear loads. In the DCR strategy, a main controller, which is usually a PI controller, is required to regulate the DC-bus voltage and, simultaneously, provide the reference current, while a modulation technique is used to generate the desired reference current. An adaptive PI-type fuzzy logic controller (A-PI-FLC) and an adaptive hysteresis current control (AHCC) are proposed to advance the DCR operation by providing fast DC-bus voltage regulation and modulating the reference current with a predefined constant switching frequency particularly in transient conditions, respectively. However, their superior performance may be jeopardized when voltage-type faults (sags/swells) emerge in the power system. These faults can interfere in the DC-bus voltage control and, in turn, deteriorate the modulation performance, which ultimately lead to degrada- tion of the SAPF performance. Thus, a supplementary controller (SC) is proposed and included in the control system to protect it from these faults. Extensive simulation studies are presented to validate the outstanding performance of the proposed control approaches in enhancing the performance of FL-NPC SAPFs.
Information Theory and thermodynamic properties of diatomic molecules using Molecular potential
Authors: Onyeaju M. C. , Omugbe E. , Onate C. A. , Okon I. B. , Eyube E. S , Okorie U.S , Ikot A.N , Ogwu D.A , Osuhor O.P 
Published: July 2023

Abstract
In this paper, the bound state solution of the non-relativistic wave equation with a molecular potential function has been obtained in a closed-form using the Nikiforov-Uvarov method. The solutions of the bound state are then applied to study the information-theoretic measures such as the one-dimensional Shannon and Renyi entropic densities. The expectation values for \(⟨r⟩\), \(⟨{r}^{2}⟩,\) and \(⟨{p}^{2}⟩\) were obtained to verify Heisenberg’s uncertainty principle. Utilizing the energy spectrum equation, the thermodynamic vibrational partition function is obtained via the Poisson summation. Other thermodynamic function variations with absolute temperature have been obtained numerically for four diatomic molecules (H2, N2, O2, and HF). The Shannon global entropic sum inequality has also been verified. The Renyi sum for constrained index parameters satisfies the global entropic inequality. The thermodynamic properties of the four molecules are similar and conform to works reported in the existing literature. The obtained vibrational energies are in fair agreement with the ones obtained using other forms of potential energy. The result further indicates that the lowest bounds for the Shannon, Renyi, and Heisenberg inequalities are ground states phenomena.
Chemical recycling of waste cellulose denim fabric and re-dyeing process
Authors: Peng Lan , Chen Yang , Wan Zhen , Zhu Yuhan , Guo Fei , Zhu Doudou , Yi Changhai 
Published: July 2023

Abstract

At present, incineration and burial are the most common ways to dispose of waste cellulose which amount could reach three million tons per year, these ways not only cause serious environmental pollution but also brings a great amount of cellulose waste that could still be recycled. In this work, the chemical method is taken to study recycle of waste cellulose denim fabric, mixed sodium hydroxide and sodium hyposulfite solution were used to achieve the purpose of separating dye from waste cellulose. Only treated after 20 min, indigo separation can reach 87.33%, and the strength loss rate of waste cellulose denim fabric is only 22.24%, which could realize the recyclization of waste cellulose, and as proved, recycled indigo can be used to redye the cellulose denim fabric. The optimal conditions for indigo separation are as follows: the weight of sodium hydroxide on the fabric is 10%, the weight of sodium hydrosulfite on the fabric is 10%, the reaction temperature is 60℃, and the reaction time is 20min. According to the test results of the UV-Vis spectrophotometer, the concentration of indigo in the dye separation solution is 0.36 g/L, and the recovery rate of the dye is 75.91%. The K/S of yarn dyed with indigo separation solution can reach 1.76, which is close to the properties of yarn dyed with standard indigo.
Adaptive Handover Control Parameters Based on Cell Load Capacity in a B5G/6G Heterogeneous Network
Authors: Mohamed Maryhan , Elbadawy Hesham , Ammar Abdelhady 
Published: July 2023

Abstract

The handover (HO) process is one of the essential processes in mobile network management and becomes an indispensable solution for quality of service (QoS) improvement during a user's mobility. In the B5G/6G network, the deployment of small cells increased to keep up with the growth of mobile traffic. This deployment will increase the number of handovers between cells. Ping-Pong HO (PPHO) and radio link failure (RLF) are considered the two major problems in HO that may occur. So, the challenge is to set the handover control parameters (HCPs) carefully to find out the proper HO decision that should be appropriate to the environmental constraints. Therefore, in our paper, we propose an adaptive HCPs algorithm that adapts to environmental constraints such as reference signal received power (RSRP), signal to interference plus noise ratio SINR, user (UE) velocity, cell load factor, and time of stay (ToS) for the UE in the cell. In the proposed model, we have immunity to RLF, and in addition to that, we significantly minimize the amount of PPHO compared to other workers. Subsequently, we improve the HO's performance and thereby provide better throughput for serving the UE in the network than that of other workers. The proposed algorithm is implemented on different handover categories in a two-tier B5G/6G heterogeneous network. In the simulation results, our proposed model is evaluated using two frequency plans. By using frequency plan 1, the UE mean throughput increased from 270 Kbps to 281 Kbps when the serving cell was fully loaded. By using frequency plan 2, the UE mean throughput increased from 6 Mbps to 20 Mbps when the serving cell was fully loaded. In addition, the amount of ping-pong handover (PPHO) between overlapped small cells decreased and will not exceed one PPHO compared to another literature model.