bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on Torque Ripple and Influencing Factors of Hydro-Generator
Authors: Qiu Hongbo , He Kun 
Published: January 2023

Background:
The safe and stable operation of large-capacity hydro-generators is of great
significance to the power grid. However, due to the armature reaction and the stator slots of the
hydroelectric generator, the torque ripple of the generator is usually large. Long time running under
the condition of large torque ripple will cause damage to the generator components and even threaten
the safety of the power grid.

Objective:
To study the factors affecting the torque ripple of the hydro-generator and reduce the
torque ripple.

Methods:
A 24 MW bulb tubular hydro generator is taken as an example, a two-dimensional transient
electromagnetic field model was established, and the correctness of the model was verified by
experiments. The causes of armature reaction and cogging effect on motor torque are analyzed. The
effects of these two factors on torque ripple are studied respectively. The torque ripple under different
working conditions is calculated, and the main factors causing and increasing torque ripple
during normal operation of hydro generator are determined.

Results:
The torque ripple increases approximately linearly with the increase of the 7th and 11th
harmonic contents, while it increases nonlinearly with the increase of the 5th harmonic contents.
When the excitation current increases from 720 A to 960 A, the torque ripple is increased by
11.4kN•m. In addition, when the excitation current increases from 720A to 840A (Rated excitation
current of the generator is 840A), the torque ripple increases greatly, the torque ripple increases by
6.6kN•m. When the excitation current exceeds the rated excitation current, due to the influence of
magnetic saturation, the increasing extent of torque ripple gradually decreases. When the excitation
current increases from 840A to 960A, the torque ripple increases only by 4.8kN•m.

Conclusion:
Due to the armature reaction, the harmonic magnetic potential will be generated in the
generator, which will affect its torque ripple. The torque ripple of the generator will increase obviously
with the increase of harmonic content. When the generator is in no-load operation, the slot
effect is the main cause of the torque ripple. In the actual operation of the generator, it usually
needs to adjust the excitation current to make the generator meet the requirements of various working
conditions.
Quality by Design Driven Formulation Development, Optimization of Rosuvastatin Calcium Loaded Floating Microballoons: In Vitro and In Vivo Characterization
Authors: Kothamasu Sasikanth , Swain Suryakanta , Bhanoji Rao Muddana Eswara , Jena Bikash Ranjan 
Published: January 2023

Background:
The prime intent of this study was to formulate, optimize and evaluate the floating microballoons of rosuvastatin calcium to extend the stomach or gastrointestinal residence time, dissolution rate, and bioavailability of the drug.

Objective:
Rosuvastatin calcium-loaded floating microballoons were prepared by solvent evapora-tion technique and systematic optimization of such formulations by response surface methodology using Box-Behnken Design, with the selected independent variables like concentration of HPMC K4M (X1), K15M (X2), and K100M (X3) and dependent variables as mean particle size in μm (R1), % entrapment efficiency (R2), and % drug released at 12h (R3).

Methods:
For each of the studied response variables, the trial formulations were subsequently eval-uated for in vitro floating lag time, drug content, total floating time, and drug content, and the data analysis through optimization was carried out by placing the experimental data with an appropriate mathematical model.

Results:
In vivo pharmacokinetics study parameters for the optimized batch showed a 4 to 5 folds elevation of peak plasma concentration (Cmax), the area under the curve (AUC) data, and reduction of time to reach peak concentration (Tmax) value compared to marketed product (p < 0.05). As per ICH guidelines, the stability study results show that floating microballoons remain stable for 6 months.

Conclusion:
Hence, the floating microballoons of rosuvastatin calcium are a valuable technique to improve the solubility, dissolution, and bioavailability of a poorly water-soluble drug, rosuvastatin calcium.
Peer Effect on Environmental Information Disclosure: Evidence from
High-polluting Industries in China
Authors: Ji Zhiying , Chen Zhuo , Chen Jun 
Published: January 2023

Background:
Among the research on the influencing factors of environmental information
disclosure, scholars rarely identify the factors from the perspective of the enterprise’s external environment,
especially peer enterprise behavior. In fact, the disclosure of environmental information by most
enterprises in China is still only voluntary, and the form of disclosure is so chaotic that it is easy to be
influenced by other enterprises.

Objective:
This study aimed to determine whether a firm's EID is affected by peer firms and contribute
to the existing literature on the influencing factors of EID.

Methods:
An analytical framework incorporating the herd behavior hypothesis, the legitimate theory,
and the stakeholder theory is constructed, and fixed effect estimation, as well as a two-stage least
square, is used to test the hypotheses.

Results:
There is a peer effect on environmental information disclosure of high-polluting firms. It has
been observed that the focal firm imitates the disclosure behavior of small peer firms more than the
large peer firms. Moreover, a peer effect of environmental disclosure on sensitive and non-sensitive information
is also reported, but the peer effect on sensitive information is larger than that on nonsensitive
information.

Conclusion:
First, policymakers need to realize that there is a peer effect involved in EID among highpolluting
firms and improve the binding force of environmental regulations. Second, there are “demonstration
effects” involved in EID. In the practice of regulations on disclosure, the smaller firms need to
be under stricter scrutiny and set as models of EID to improve the efficiency of supervision and regulation.
Third, enterprises have a stronger peer effect on the disclosure of sensitive information. Governments
should strengthen the supervision of sensitive information disclosure.
Construction of User Electricity Behavior Portrait based on QFPAKmeans
Clustering
Authors: Yu Xiuwen , Li Yuancheng 
Published: January 2023

Background:
With the further opening of the electricity sales market, based on the current
power reform situation, it is more emphasized to focus on the market and customers and carry
out value marketing. Therefore, further mining the user value has become a necessary means for the
transformation of power grid enterprises, and the construction of power user behavior portraits has
very practical significance for the business expansion of power grid companies and the improvement
of customer service levels.

Objective:
In order to further explore user value, a method of user electricity behavior portrait based
on QFPAK-means (quantum flower pollination K-means) clustering is proposed.

Methods:
Through the quantum flower pollination algorithm, considering the overhead cost, the
optimal classification number is automatically determined, and on this basis, K-means clustering is
completed. In the meantime, the typical power consumption patterns of users are extracted by using
the K-means clustering algorithm based on quantum flower pollination, and the features are extracted
as the power consumption behavior portraits of users.

Results:
Through the comparative simulation of different methods, the effectiveness of the proposed
algorithm is verified, which can provide outstanding guidance for power grid companies to expand
their business and improve customer service levels.

Conclusion:
A method of user electricity behavior portrait based on QFPAK-means clustering is
proposed to further explore user value, and the experimental results demonstrate the effectiveness
and advantage of the proposed method.
Ultra-brief Assessment of Working Memory Capacity: Ambulatory Assessment Study Using Smartphones
Authors: Hakun Jonathan G , Roque Nelson A , Gerver Courtney R , Cerino Eric S 
Published: January 2023

Background
The development of mobile technology with substantial computing power (ie, smartphones) has enabled the adaptation of performance-based cognitive assessments to remote administration and novel intensive longitudinal study designs (eg, measurement burst designs). Although an “ambulatory” cognitive assessment paradigm may provide new research opportunities, the adaptation of conventional measures to a mobile format conducive to intensive repeated measurement involves balancing measurement precision, administration time, and procedural consistency.

Objective
Across 3 studies, we adapted “complex span” tests of working memory capacity (WMC) for ultra-brief, smartphone-based administration and examined their reliability, sufficiency, and associations with full-length, laboratory-based computerized administrations.

Methods
In a laboratory-based setting, study 1 examined associations between ultra-brief smartphone adaptations of the operation span, symmetry span, and rotation span tasks and full-length computerized versions. In study 2, we conducted a 4-day ecological momentary assessment (EMA) study (4 assessments per day), where we examined the reliability of ultra-brief, ambulatory administrations of each task. In study 3, we conducted a 7-day EMA study (5 assessments per day) involving the ultra-brief rotation span task, where we examined reliability in the absence of extensive onboarding and training.

Results
Measurement models in study 1 suggest that comparable estimates of latent WMC can be recovered from ultra-brief complex span task performance on smartphones. Significant correlations between the ultra-brief tasks and respective full-length versions were observed in study 1 and 2, ranging from r=0.4 to r=0.57. Results of study 2 and study 3 suggest that reliable between-person estimates of operation span, symmetry span, rotation span, and latent WMC can be obtained in 2-3 ultra-brief administrations (equivalent to <1 day of testing in an EMA study design). The results of study 3 replicated our findings, showing that reliable between-person estimates of rotation span may be obtained in as few as 2 ultra-brief administrations in the absence of extensive onboarding and training. In addition, the modification of task parameterization for study 3 improved the estimates of reliability of within-person change.

Conclusions
Ultra-brief administration of complex span tasks on smartphones in a measurement burst design can generate highly reliable cross-sectional estimates of WMC. Considerations for future mobile cognitive assessment designs and parameterizations are discussed.
Proteomic predictors of incident diabetes: Results from the Atherosclerosis Risk in Communities (ARIC) Study
Authors: Rooney Mary R. , Chen Jingsha , Echouffo-Tcheugui Justin B. , Walker Keenan A. , Schlosser Pascal , Surapaneni Aditya , Tang Olive , Chen Jinyu , Ballantyne Christie M. , Boerwinkle Eric , Ndumele Chiadi E. , Demmer Ryan T. , Pankow James S. , Lutsey Pamela L. , Wagenknecht Lynne , Liang Yujian , Sim Xueling , Dam Rob van , Tai E Shyong , Grams Morgan E. , Selvin Elizabeth , Coresh Josef 
Published: January 2023

<p> </p>
<p><strong>Introduction: </strong>The plasma proteome preceding diabetes can improve our understanding of diabetes pathogenesis.</p>
<p><strong>Methods: </strong>In 8,923 Atherosclerosis Risk in Communities (ARIC) Study participants (aged 47-70 years, 55% women, 20% Black), we conducted discovery and internal validation for associations of 4,955 plasma proteins with incident diabetes. We externally validated results in the Singapore Multiethnic Cohort (MEC) nested case-control (624 cases, 1,214 controls). We used Cox regression to discover and validate protein associations and risk prediction models (elastic net regression with cardiometabolic risk factors and proteins) for incident diabetes. We conducted a pathway analysis and examined causality using genetic instruments. </p>
<p><strong>Results: </strong> There were 2,147 new diabetes cases over a median of 19 years. In the discovery sample (N=6,010), 140 proteins were associated with incident diabetes after adjustment for 11 risk factors (p<10-5). Internal validation (N=2,913) showed 64 of the 140 proteins remained significant (p<0.05/140). Forty-seven of the 63 (75%) available proteins were validated in MEC. Twenty-two of the 47 proteins had novel associations with diabetes. Prediction models (27 proteins selected by elastic net) developed in discovery had a C-statistic of 0.731 in internal validation with ∆C-statistic=0.011 (p=0.04) beyond 13 risk factors including fasting glucose and HbA1c. Inflammation and lipid metabolism pathways were over-represented among the diabetes-associated proteins. Genetic instrument analyses suggested plasma SHBG, ATP1B2, and GSTA1 play causal roles in diabetes risk.</p>
<p><strong>Conclusions: </strong>We identified 47 plasma proteins predictive of incident diabetes, established causal effects for three proteins, and identified diabetes-associated inflammation and lipid pathways with potential implications for diagnosis and therapy. </p>
A Microsphere-Based Rubber Curing Model for Tire Production Simulation
Authors: Berger Thomas , Kim Sang-hyub , Kaliske Michael 
Published: January 2023

ABSTRACT
In this contribution, a constitutive model for rubber is presented that describes the material in its unvulcanized and vulcanized state as well as during its phase transition. The model is based on the microsphere approach to represent the three-dimensional macroscopic behavior by a set of one-dimensional microscopic chains. When the uncured rubber is exposed to large temperature, the polymer chains build-up crosslinks among each other and the material changes its properties from soft viscoplastic to stiffer viscoelastic behavior. The state of cure over time at different temperatures is identified via a moving die rheometer (MDR) test. Based on this experimental data, a kinetic model is fitted to represent the state of cure in the simulation. The material model changes from the description of an unvulcanized state to a vulcanized state based on the current degree of cure in a thermomechanically consistent manner and fulfills the second law of thermodynamics. The curing model framework is suitable to combine any given material models for uncured and cured rubber.
The presented material formulation is applied to an axisymmetric tire production simulation. Therefore, the kinetic state of cure approach is fitted to MDR experimental data. The uncured and cured material model parameters are fitted separately to experiments by a gradient based fitting procedure. The in-molding and curing process of a tire production is simulated by a finite element approach. Subsequently, the simulated footprint of the tire is compared to experimental results. It can be shown that the quality of the footprint could be optimized solely by changing the shape of the green tire.
Teachers’ Problematic In Implementing Online Learning During Pandemic Era At State Madrasa Ibtidaiyah 3 Central Aceh
Authors: Maulida  
Published: January 2023

This study aims to describe the teachers’ problems in implementing online learning during pandemic era at State Madrasa Ibtidaiyah 3 Central Aceh. The research method uses descriptive qualitative. Data collection techniques through observation, interviews and documentation. The results of the study show that the teachers’ problematic in implementing online learning during the Covid-19 pandemic related to the limitations of teacher competence in using technology, some students do not have an android for online learning, very little time to manage online learning, difficulties in making online learning media, limited internet network availability and expensive internet quotas, lack of parental supervision in carrying out learning. To overcome this problem, various efforts have been made, such as: attending training or seminars related to online learning, giving assignments to students via Short Message Service or students taking assignments to school, participating in training to create online learning media, increasing online learning time, teachers providing funds for internet quotas, the teacher coordinates with the parents. Although many problems are felt by teachers during pandemic, they continue to try to implement online learning to students so that the expected learning objectives are achieved even though they are not optimal.
Involvement of The Jemaah Ahmadiyah Indonesia (JAI) in Promoting “Peaceful Islam” Through The Website
Authors: Adeni  , Silviatul Hasanah  , Andi Faisal Bakti  
Published: January 2023

The existence of Jemaah Ahmadiyah Indonesia (JAI) is still considered controversial in Indonesia. However, this community seems to be voicing peaceful Islam through their official website media. By using a qualitative method based on a netnographic approach (online observation), several steps are taken, namely visiting the Ahmadiyah website at https://ahmadiyah.id/, entering the keyword “peaceful Islam (Islam Damai)” to select related articles, then classifying and analyzing the data. This paper concludes that Ahmadiyah is involved in promoting harmony in Indonesia amidst the issue of radicalism. What they do is adjust their views and movements to the principles of the state within the framework of the Unitary State of the Republic of Indonesia (NKRI). The peaceful Islam they promote can be seen from the narratives of the articles they post, such as Universal Islam, Islam and equality of human rights, Islam and the reinterpretation of jihad, Islam is not a religion of war (taking up arms, relations between Islam and non-Muslims, Islam and Europe civilization, Islam and love for all, hatred for none. The involvement of JAI in promoting harmony has become a counter-narrative against other communities that have cornered Ahmadiyah.
Maps and Critiques of Epistemology in Local Islamic Studies in Nusantara
Authors: Turhamun  
Published: January 2023

This paper analyzes research that discusses local Islamic studies to be mapped and describes the criticisms circulating in the analysis of local Islamic studies in the archipelago by both insiders and outsiders. This research found that the local Islamic studies pioneered by Gertz with the epistemology of Abangan, Santri, and Priyayi have become role models for subsequent researchers. In general, researchers after Gertz agreed with Islam as a system, but many disagreed with the classification of the pro-day rather than Islam as a system. Next came Nur Syam's collaborative epistemology, Woodward’s acrylate epistemology, and others. Criticisms of Abangan, Santri, and Priyayi Epistemology have sprung up after many researchers such as Harsja W. Bachtiar, Zaini Muchtarom, Nur Syam, Mark R. Woodward, Robert W. Hefner. It was Hefner's research and Niels Mulder who conducted the study with the same point of view but in different locations of the study. The local Islam study also developed in the context of urban Islamic studies, which is depicted with lifestyle changes, especially fashion but still accompanied by religious values. Urban Islam shows how the ability of unlimited relations or known as transnational. Through the fashion movement, they identified themselves as modern and shaleh or shalehah.
Utilization of Digital Learning Media in Islamic Education to Increase Literacy and Innovation in the Era of Modern Technology
Authors: Hamdi  , Setria Utama Rizal  , Muhammad Redha Anshari  , Nurul Hikmah  
Published: January 2023

With the advancement of the times, all activities are very close to technology, especially young people who are not separated from technological activity patterns. The pattern of activity in the sense that can provide benefits and global competitiveness in the era of Modern Technology, this can be implemented by utilizing Digital Learning Media in developing Islamic education to increase literacy and innovation in the era of modern technology or can be known as society 5.0, seeing the lack of literacy among youth, low literacy makes it difficult to innovate in the era of revolution so that intellectual power will not be honed and unable to globally competitive. The purpose of this study is to find out the innovation of digital learning media in developing Islamic Education and forming a young generation who intellectually innovate high through digital literacy. The method used by researchers in this study is to use qualitative research. The analysis method used is a qualitative descriptive method. This idea describes the concentration of digital learning media in developing Islamic Education to improve digital literacy in the era of modern technology. The results showed that: Digital learning media innovation is very appropriate as a way to develop Islamic Education and form a young generation of intellectuals who can compete globally in bringing up new innovations in the form of a digital library-based digital literacy web.
Recent Advances, Challenges, Opportunities, Product Development and Sustainability of Main Agricultural Wastes for the Aquaculture Feed Industry – A Review
Authors: Kari Zulhisyam Abdul , Sukri Suniza Anis Mohamad , Rusli Nor Dini , Mat Khairiyah , Mahmud M.B. , Zakaria Nik Nur Azwanida , Wee Wendy , Hamid Noor Khalidah Abdul , Kabir Muhammad Anamul , Ariff Nik Shahman Nik Ahmad , Abidin Shahriman Zainal , Zakaria Muhammad Khairulanam , Goh Khang Wen , Khoo Martina Irwan , Van Doan Hien , Tahiluddin Albaris , Wei Lee Seong 
Published: January 2023

Abstract
Million tonnes of agricultural waste are generated annually worldwide. Agricultural wastes possess similar profiles to the main products but are lower in quality. Managing these agricultural wastes is costly and requires strict regulation to minimise environmental stress. Thus, these by-products could be repurposed for industrial use, such as alternative resources for aquafeed to reduce reliance on fish meal and soybean meal, fertilisers to enrich medium for growing live feed, antimicrobial agents, and immunostimulatory enhancers. Furthermore, utilising agricultural wastes and other products can help mitigate the existing environmental and economic dilemmas. Therefore, transforming these agricultural wastes into valuable products helps sustain the agricultural industry, minimises environmental impacts, and benefits industry players. Aquaculture is an important sector to supply affordable protein sources for billions worldwide. Thus, it is essential to explore inexpensive and sustainable resources to enhance aquaculture production and minimise environmental and public health impacts. Additionally, researchers and farmers need to understand the elements involved in new product development, particularly the production of novel innovations, to provide the highest quality products for consumers. In summary, agriculture waste is a valuable resource for the aquafeed industry that depends on several factors: formulation, costing, supply, feed treatment and nutritional value.