bluuebunny/crossref_metadata_2025_split huggingface dataset:
Urban green service equity in Xiamen based on network analysis and concentration degree of resources
Authors: Yang Qiuxia , Zhan Huanqi , Huang Jian 
Published: April 2022

Abstract
This article considers Xiamen’s two districts as examples to help identify the supply and demand of green services by focusing on the spatial equity of green space in microregions. Based on network and concentration methods, the results show there are great differences in equity enjoyed by residents. The equity value of Tong’an is generally higher than that of Jimei district, and the value of the periphery of the central urban area is generally higher than that of the inner area. Jimei relies more on traffic facilities than Tong’an. This study finds that the carrying capacity of rail transit cannot be ignored in accessibility. By measuring under three travel modes, the distribution density of green space in Jimei and Tong’an is basically similar. The main reason why Jimei’s accessibility perform better than Tong’an district is traffic. Based on the service coverage rate (C) and the recreation opportunity index (R), this article obtained the regional evenness index, and found the overall characteristics of “high in the south and low in the north.” This study suggests differences in spatial performance at the micro level are often complex, and consideration of different explanatory variables such as population may provide directions for policymaking.
Experimental and simulation studies of a continuous reactive distillation for an esterification process
Authors: Mekala Mallaiah 
Published: April 2022

Abstract
Esterification of acetic acid and methanol to produce methyl acetate and water has been studied in a continuous packed bed catalytic reactive distillation column. Indion 180, an ion-exchange resin solid catalyst has loaded in an equivalent Katapak-S into the reactive section of the column. The experiments were conducted under different operating conditions of reboiler temperature, total feed flow rate of the reactants, methanol to acetic acid mole ratio, feed location of acetic acid and methanol with respect to reactive section, reflux ratio and catalyst amount to investigate the composition of distillate and reboiler respectively. The maximum methyl acetate composition and acetic acid conversion is obtained at reboiler temperature of 80 °C, reflux ratio of 2, total feed flow rate of 16.3 g/min, catalyst loading of 60 g and mole ratio of methanol to acetic acid is 1. From the experimental investigations, it is found that the composition of the methyl acetate in the distillate is 95% by mole at an optimized experimental condition. The experimental data has been compared with equilibrium and non-equilibrium model predictions and found that non-equilibrium model is able to predict the experimental data reasonably good. The calculated error from equilibrium model relative to experimental data is 4.71% and rate based model relative to experimental data is 0.61%. It is observed that the error is less in rate based model compared to equilibrium model.
A survey of approximate arithmetic circuits and blocks
Authors: Chen Ke , Yin Peipei , Liu Weiqiang , Lombardi Fabrizio 
Published: April 2022

AbstractApproximate computing has become an emerging research topic for energy-efficient design of circuits and systems. Many approximate arithmetic circuits have been proposed, therefore it is critical to summarize the available approximation techniques to improve performance and energy efficiency at a acceptable accuracy loss. This paper presents an overview of circuit-level techniques used for approximate arithmetic. This paper provides a detailed review of circuit-level approximation techniques for the arithmetic data path. Its focus is on identifying critical circuit-level approximation techniques that apply to computational units and blocks. Approximate adders, multipliers, dividers, and squarer are introduced and classified according to their approximation methods. FFT and MAC are discussed as computational blocks that employ an approximate algorithm for implementation.
Comprehensive review of the properties of fly ash-based geopolymer with additive of nano-SiO2
Authors: Han Qiaoyi , Zhang Peng , Wu Jingjiang , Jing Yuting , Zhang Deng , Zhang Tianhang 
Published: April 2022

AbstractNano-SiO2is a non-toxic, tasteless, and pollution-free material with hydroxyl groups that facilitate the adsorption of water on its surface. Nano-SiO2is characterized by small particle size, high purity, low density, large surface area, and good dispersion properties. In addition, nano-SiO2has excellent stability, reinforcement, thixotropy, and optical and mechanical properties. The additive of nano-SiO2can enhance the mechanical properties and microstructure of concrete. Therefore, nano-SiO2is widely used as an additive in the field of building materials. Geopolymers have excellent mechanical properties, acid–alkali resistance, fire resistance, and high-temperature resistance. In addition, mineral waste and construction waste can be used as raw materials for geopolymers. Therefore, geopolymers have the potential to substitute ordinary Portland cement and have good prospects for application as construction materials. The application of nanomaterials in geopolymer products has shown that nano-SiO2is effective in increasing the rate of geopolymerization reaction and reducing the setting time of geopolymers in a controlled quantity. Related results indicate that an appropriate quantity of nano-SiO2can make the microstructure of fly ash-based geopolymers denser and produce higher mechanical strength. In this study, based on the mechanism of geopolymerization, the effects of nano-SiO2on the properties of fly ash-based geopolymers including compressive strength, microstructure, hardening properties, shear bond strength, durability, and practical applications have been summarized. This study can provide a basis for understanding the effects of nano-SiO2on the mechanical properties and durability of fly ash-based geopolymers.
Selection of high-yield maize hybrid under different cropping systems based on stability and adaptability parameters
Authors: Ruswandi Dedi , Azizah Elia , Maulana Haris , Ariyanti Mira , Nuraini Anne , Poppy Indriani Nyimas , Yuwariah Yuyun 
Published: April 2022

Abstract
The intercropping of maize with other food crops is a current solution to problems in food crop production and crop failures. The objectives of the study were to (i) select adaptive maize hybrids in intercropping as well as sole-cropping systems, and (ii) test the ideal cropping system to evaluate best hybrids for intercropping. This study used 12 maize hybrids with different genetic backgrounds. Planting was carried out for two seasons using four cropping systems. Hybrids were selected according to their adaptability and stability based on parametric, nonparametric, and multivariate analyses. The results showed that G10 had high yield for all cropping systems. G10 was also selected as an adaptive hybrid for sole-cropping, whereas G9 was selected as an adaptive hybrid for intercropping. The L5 and L4 were ideal environments for evaluating hybrids under different cropping systems. The selected hybrids should be evaluated and disseminated for small-holder farmers in Indonesia.
Insights from genomic studies on the role of sex steroids in the aetiology of endometriosis
Authors: Saunders Philippa T K 
Published: April 2022

Endometriosis is a chronic neuro-inflammatory disorder the defining feature of which is the growth of tissue (lesions) that resembles the endometrium outside the uterus. Estimates of prevalence quote rates of ~10% of women of reproductive age, equating to at least 190 million women world-wide. Genetic, hormonal and immunological factors have all been proposed as contributing to risk factors associated with the development of lesions. Twin studies report the heritable component of endometriosis as ~50%. Genome-wide association studies (GWAS) have identified single nucleotide polymorphisms (SNPs) that appear over-represented in patients with endometriosis, particularly those with more extensive disease (stage III/IV). In different sample populations, there has been replication of SNPs near genes involved in oestrogen and other steroid regulated pathways including ESR1 (oestrogen receptor alpha), GREB1, HOXA10, WNT4 and MAPK kinase signalling. Comparisons with GWAS conducted on other patient cohorts have found links with reproductive traits (age at menarche) and disorders (fibroids, endometrial and ovarian cancer) and common co-morbidities (migraine, depression, asthma). In summary, genetic analyses have provided new insights into the hormone-regulated pathways that may contribute to increased risk of developing endometriosis some of which may act in early life. New studies are needed to clarify the relationship between the many SNPs identified, the genes that they regulate and their contribution(s) to development of different forms of endometriosis. We hope that more advanced methods allowing integration between GWAS, epigenetic and tissue expression data will improve risk analysis and reduce diagnositic delay.

Lay summary
Endometriosis is a debilitating reproductive disorder affecting ~10% of reproductive-age women, and those assigned female at birth, which causes a range of symptoms including chronic pain and infertility. The reason why some, but not all these individuals, develop the lesions that characterise the disease are poorly understood, but recently attention has focused on genetic risk factors to explain why the incidence is higher in some families. Studies on large cohorts of patients with comparison of their DNA to women without endometriosis or with other disorders have documented changes in genes associated with steroid hormone production or action. The results provide further evidence that endometriosis shares genetic risk factors with other disorders of the reproductive system and a platform for new ideas related to risk, biomarkers and therapies.
On the Ambiguous Nature of Theory in Educational Design-based Research – Reflecting and Structuring from an IS Perspective
Authors: Oppl Sabrina 
Published: April 2022

Background: The lack of commonly accepted models of educational Design-based Research (DBR) hinders the effectiveness of knowledge transfer and theory development in this field. Such models are well established in information systems (IS) research. The structured approaches to DBR in IS research have the potential to inform educational research practice for facilitating the interplay between theoretical and practical advancements.
Method: We compare existing approaches to identify compatibility in terms of objectives and structured process designs in the two fields based on a literature review. Having established common ground, we examine the role of theory as a result of DBR and identify potential for synthesis of existing concepts. Finally, we transfer an DBR contribution types model from IS and evaluate its applicability by reflecting it against outcomes in educational DBR.
Findings: We show a compatibility of the goals and characteristics of DBR in both disciplines and identify a common underlying understanding that enables a transfer of concepts and models. The nature of DBR outcomes in educational research is found to be ambiguous, in particular with respect to the role of theory. This hampers the development of generalizable and transferable findings. DBR in IS provides more coherent models of the role of theory and the processes that lead to its development and validation. We show that these models can inform the implementation of educational DBR.
Contribution: The paper contributes to the advancement of educational DBR by transferring models from IS research after thoroughly examining the compatibility of DBR in both fields. The more structured approach to examine and assess DBR outcomes enables to improve the generalizability and transferability of findings in educational research.
Regulación genética de la determinación sexual y diferenciación gonadal en peces teleósteos
Authors: Enríquez-Valencia Cruz Elena , Prieto-Mojica Camilo Alberto , Gómez-Balanta Francy Zorayda 
Published: April 2022

Comprender el control en la determinación y la diferenciación del sexo en peces es fundamental para mejorar aspectos de manejo, productividad, economía y conservación de las especies. El objetivo de esta revisión es brindar información de los principales mecanismos genético-moleculares de determinación y diferenciación sexual en peces teleósteos. La búsqueda de información se desarrolló entre 2019 – 2021 a través de bases de datos bibliográficas utilizando frases como: “sex determination fish”, “sexual differentiation fish” y “sex neotropical fish”. La selección de la información se realizó llevando en consideración máximo 10 años de publicación, descartando documentos considerados como tesis de maestría o doctorado. La determinación del sexo puede ser definido por sistemas cromosómicos como XX/XY, ZZ/ZW, XX/X0, ZZ/Z0, XX1, XX2 y X1X2Y o modulado por diferentes genes autosómicos tales como cyp19a1, foxl2, figla, dmrt1, sox9, amh, gsdf, sin embargo, a pesar de los grandes avances en la investigación en el área molecular, el proceso de regulación en la determinación y diferenciación del sexo en peces aún no está completamente dilucidado, especialmente en especies Neotropicales.
STUDI ANALISIS PROGRAM BIMBINGAN KONSELING KOMPREHENSIF BERBASIS ISLAM UNTUK MENINGKATKAN RESILIENSI SISWA
Authors: Asror Moh 
Published: April 2022

Tujuan penelitian ini menjelaskan tentang (1) bagaimana pelaksanaan program bimbingan konseling komprehensif berbasis Islam di SMA 1 Gebog Kudus, (2) bagaimana upaya guru bimbingan konseling dalam meningkatkan resiliensi melalui program bimbingan konseling komprehensif berbasis Islam di SMA 1 Gebog Kudus. Penelitian ini menggunakan pendekatan kualitatif. Penelitian dilakukan di SMA 1 Gebog Kudus. Informan meliputi guru bimbingan konseling, kepala sekolah, wakil kepala, komite sekolah, siswa dan orangtua. Pengumpulan data dilakukan dengan wawancara, observasi, dan dokumentasi. Data yang diperoleh dianalisis dengan langkah-langkah reduksi data, penyajian data, dan kesimpulan. Pengambilan sampel menggunakan tehnik nonprobality sampling, dengan penentuan menggunakan purposive sampling. Hasil yang diperoleh dalam penelitian ini menunjukkan bahwa (1) pelaksanaan program bimbingan konseling komprehensif berbasis Islam dalam meningkatkan resiliensi siswa SMA 1 Gebog Kudus Tahun 2017/2018 sudah berjalan dengan baik dibuktikan dengan adanya kegiatan bimbingan konseling yang terjadwal. Kegiatan tersebut meliputi menentukan tujuan program, menyusun program, melaksanakan program bimbingan konseling terdiri dari layanan dasar, layanan responsif, layanan perencanaan individual dan dukungan sistem, serta dengan melakukan evaluasi program bimbingan konseling sudah berjalan dengan baik;, (2) Upaya guru bimbingan konseling dalam pelaksanaan program bimbingan konseling komprehensif berbasis Islam dalam meningkatkan resiliensi siswa di SMA 1 Gebog Kudus dengan cara mengintegrasikan program bimbingan konseling dengan nilai-nilai agama, melakukan bimbingan secara komprehensif, melakukan koordinasi dan komunikasi kerjasama dengan berbagai pihak.
Virtual Social Networks Addiction and High-Risk Group among Health Science Students in Iran: A Latent Class Analysis
Authors: Torkian Samaneh , Malek Mohammadi Neda , Mohammadizadeh Mehdi , Shahesmaeili Armita 
Published: April 2022

Background and Purpose: Virtual social networks (VSNs) are among the most popular communication paths that have become an integral part of most people's lives, including students. This study aimed to investigate the prevalence of VSNs addiction and their related factors, and identify the patterns of addictive-related factors among the students in Kerman, Iran in 2019.
Materials and Methods:This cross-sectional study was conducted on 400 students from Kerman University of Medical Sciences. The study instrument was a standardized questionnaire. Descriptive analysis, logistic regression models, and latent class analysis were used to analyze the data. The data were analyzed using SPSS26, Stata12 and WinLTA (v. 3.1) software.
Results: 50% of the participants were male, staying in dormitory. The number of individuals in the levels of education in the four groups was equal. Around 0.5% of the students were addicted and 36.5% were at the risk of addiction to VSNs. The most commonly used VSNs was the Telegram (76.8%), and most students (28.8%) spent between 2-3 hours a day on VSNs. In the multivariate model, using 1-2 hours (AOR = 3.33, 95% CI: 1.07 - 10.19), 2-3 hours (AOR = 7.33, 95% CI: 2.50 - 21.52) and more than 3 hours a day (AOR = 18.54, 95% CI: 6.05 - 56.8) of VSNs were associated with an increased odds of being at the risk of VSNs addiction. The Latent Class Analysis showed that high-risk addictive factors including using Telegram for entertainment, providing accommodation in the dormitory, and having a graduate degree significantly influenced the classification.
Conclusion: More than one-third of Kerman college students were found to be at the risk of VSNs addiction. Providing appropriate interventions including alternative activities as well as raising knowledge especially for undergraduate students is urgently needed.
Analisis Strategi Bauran Pemasaran berdasarkan Prinsip Syariah (Studi Kasus: Meryva Shop di Kulonprogo, Yogyakarta)
Authors: Fadah Isti , Vijonta Desva Kansa , Sofianti Septarina Prita Dania , Yuswanto Istatuk Budi 
Published: April 2022

This study aims to determine and analyze the suitability of the application of the marketing mix at Meryva Shop with sharia principles. This marketing mix consists of product (product), price (price), place (place), & promotion (promotion) which is often referred to as the 4Ps. Meryva Shop is one of the Micro Small and Medium Enterprises (UMKM) which is engaged in the culinary and textile businesses. Some of its products in the culinary field are Drinkita, Snackita, and Iki Suki; Meanwhile, for the textile sector, women's clothing is varied, namely, pajamas and negligee suits. Meryva Shop has 2 places to run its business, namely through anstore offline located at Ndalem Giripeni Housing 106, Kulonprogo, and anstore online using theplatform Shopee. The method used in this research is qualitative. This study uses primary and secondary data with interviews, observations, and documentation as data collection techniques. The informants used are the owner of the Meryva Shop itself and several of its customers. The results of this study indicate that the application of the four marketing mixes at Meryva Shop, namely the product mix, price, place/distribution channel, and promotion is in accordance with sharia principles.

Keywords: Culinary, Marketing Mix, Meryva Shop, Sharia Principles, Textile.
Implementasi Model Discovery Learning Dalam Pembelajaran Matematika Pada Pokok Bahasan Persamaan Kuadrat Melalui Blended Learning
Authors: Chotimah Triyana Rizka Chusnul , Astutiningtyas Erika Laras , Ikaningtiyas Fitria 
Published: April 2022

Penelitian ini di laksanakan di SMK Muhammadiyah 1 Sukoharjo pada tanggal 30 september-1 Desember 2021 melalui kegiatan progam asistensi mengajar. Tujuan penelitian adalah untuk menganalisis proses kegiatan belajar mengajar dengan model discovery learning melalui blended learning yang diterapkan secara tatap muka dan daring. Penelitian ini termasuk penelitian deskriptif dengan pendekatan kualitatif. Subjek penelitiannya yaitu siswa kelas XI TEI. Teknik pengumpulan data dengan menggunakan observas. Hasil penelitian yaitu 1) Peneliti melakukan kegiatan observasi, 2) Peneliti melaksanakan proses pembelajaran dengan tahapan : kegiatan pendahuluan, kegiatan inti, dan kegiatan penutup pembelajaran
The influence of sediment supply on the stratigraphic evolution of an ancient passive margin deep-marine slope channel system, Windermere Supergroup, British Columbia, Canada
Authors: Fraino Patricia E. , Arnott R. William C. , Navarro Lilian 
Published: April 2022

ABSTRACTAt the Castle Creek study area a superbly exposed continental-slope channel-complex set of the Isaac Formation termed ICC1 crops out. ICC1 is 220 m thick and exposed over 5 km parallel to bedding and consists of four vertically stacked channel complexes—lower channel complex (LC), and three upper channel complexes (termed UC1–UC3). Based on differences in lithological and textural makeup, and stratal trends, two styles of channel fill and stacking pattern are recognized—disorganized stack of bottom-up channel fills (LC, UC1, and UC2), and organized lateral-offset stack of laterally accreting channel fills (UC3). Bottom-up channel fills show an upward and axis-to-margin fining and thinning, and were filled by poorly sorted, density-stratified flows. In contrast, channel fills of UC3 exhibit negligible upward and lateral fining and thinning and were filled by flows enriched in coarse and very coarse sand and were only negligibly stratified in their lower part. Accordingly, the lower, depositionally important part of the flow had a plug-like density profile with limited overspill that caused circulation patterns in channel bends to resemble those in rivers. Notably, the grain-size makeup of late-stage channel fills of UC3 indicates a change in the makeup of the sediment supply, namely grain size and sorting. Note that this systematic upward change in sediment texture and channel type is observed in most (5 of 8) Isaac slope channel-complex sets at the Castle Creek study area. These changes reflect a change from hinterland- to shelf-dominated sediment supply interpreted to be associated with a long-term rise of relative sea level that progressively expanded continental-shelf accommodation and retention of coarse relict and palimpsest sediment. During short-term relative sea-level falls this increasingly voluminous source of coarse, moderately well-sorted siliciclastic and minor carbonate sediment eventually came to dominate the supply of coarse sediment to the shelf edge, and in turn, controlled the character of turbidity currents that remobilized sediment farther down the continental slope and possibly onto the basin floor.
Equal Quality Distribution of Two-Phase Fluid by Isokinetic Principle
Authors: Liu Ming , Niu Pengman , Zhang Xingkai , Zheng Weibiao , Wang Zhihui , Wang Dong 
Published: April 2022

Summary
In thermal recovery of heavy oil, phase separation often occurs when a steam-water stream turns to branches in a junction and distributor, thereby resulting in a significant quality deviation between branches. Although a lot of efforts have been made during the past decades, the problem is still not well solved. Inspired by the principle of the isokinetic probe, this paper builds a new model of distribution. The major change is that the inner space of the main pipe is isolated into fan-shaped isokinetic flow channels, each connecting to a side branch. Flow control devices are installed at the outlet of each branch. Moreover, a swirler is used to convert the incoming flow pattern into a uniform swirling gas core-annular flow before the new isokinetic dividing system. Computational fluid dynamics (CFD) simulations were conducted to reveal the characteristics of gas-liquid two-phase flow within the distributor. The characteristics of both under isokinetic and nonisokinetic flow conditions were analyzed. The most interesting result is that once the uniform swirling gas core-annular flow is formed, liquid film flow becomes very stable and is almost unaffected by the operation deviations from the isokinetic condition, whereas gas flow is much more sensitive to the deviations. The more deviation of isokinetic condition, the more deflection of gas flow or phase separation will take place and the greater quality deviation will be. Air-water two-phase flow experiments were also conducted to verify the CFD results.