bluuebunny/crossref_metadata_2025 huggingface dataset:
Zircon U–Pb geochronology and Hf isotopic compositions of igneous rocks from Sumatra: implications for the Cenozoic magmatic evolution of the western Sunda Arc
Authors: Lai Yu-Ming , Liu Ping-Ping , Chung Sun-Lin , Ghani Azman A. , Lee Hao-Yang , Quek Long Xiang , Li Shan , Roselee Muhammad Hatta , Murtadha Sayed , Lintjewas Lediyantje , Iizuka Yoshiyuki
Published: January 2023

Sumatra is located at the western end of the Sunda Arc, which resulted from the subduction of the Indo-Australian Plate beneath the Eurasian Plate. In this study, we report detailed zircon U–Pb and Hf isotope data for Cenozoic igneous rocks from the entire island of Sumatra to better constrain the temporal and spatial distribution of arc magmatism. The new dataset, combined with literature information, identifies the following two magmatic stages: (1) Paleocene to Early Eocene (66–48 Ma) and (2) Early Miocene to Recent (23–0 Ma), with a 25 myr-long period of magmatic quiescence in between. The magmatic zircons show predominantly positive and high ε
Hf
(
t
) values, ranging from +19.4 to +7.1 in western Sumatra, +17.1 to +1.6 in central Sumatra and +18.0 to +7.0 in eastern Sumatra, indicating an isotopically juvenile magma source in the mantle wedge along the western Sunda Arc. We explain the negative and low ε
Hf
(
t
) values (+0.5 to −13.1) of young samples around the supervolcano Toba as evidence for the subduction of sediment. We argue for a change in the subduction processes, where the first magmatic stage ceased owing to the termination of the Neo-Tethyan subduction and the following stage corresponded to the modern Sunda subduction.
Robust laser ablation Lu–Hf dating of apatite: an empirical evaluation
Authors: Glorie Stijn , Hand Martin , Mulder Jacob , Simpson Alexander , Emo Robert B. , Kamber Balz , Fernie Nicholas , Nixon Angus , Gilbert Sarah
Published: January 2023

Recent developments in laser-ablation Lu–Hf dating have opened a new opportunity to rapidly obtain apatite ages that are potentially more robust to isotopic resetting compared to traditional U–Pb dating. However, the robustness of the apatite Lu–Hf system has not been systematically examined. To address this knowledge gap, we conducted four case studies to determine the resistivity of the apatite Lu–Hf system compared to the zircon and apatite U–Pb system. In all cases, the apatite U–Pb system records a secondary (metamorphic or metasomatic) overprint. The apatite Lu–Hf system, however, preserves primary crystallization ages in unfoliated granitoids at temperatures of at least
c.
660°C. Above
c.
730°C, the Lu–Hf system records isotopic resetting by volume diffusion. Hence, in our observations for apatites of ‘typical’ grain sizes in granitoids (
c.
0.01–0.03 mm
2
), the closure temperature of the Lu–Hf system is between
c.
660 and
c.
730°C, consistent with theoretical calculations. In foliated granites, the Lu–Hf system records the timing of recrystallization, while the apatite U–Pb system tends to record younger cooling ages. We also present apatite Lu–Hf dates for lower crustal xenoliths erupted with young alkali basalts, demonstrating that the Lu–Hf system can retain a memory of primary ages when exposed to magmatic temperatures for a relatively short duration. Hence, the apatite Lu–Hf system is a new insightful addition to traditional zircon (or monazite) U–Pb dating, particularly when zircons/monazites are absent or difficult to interpret due to inheritance or when U and Pb isotopes display open system behaviour. The laser-ablation-based Lu–Hf method allows campaign-style studies to be conducted at a similar rate to U–Pb studies, opening new opportunities for magmatic and metamorphic studies.
Introduction to the Special Section on Selected Papers from ICCPS 2021
Authors: Al Faruque Mohammad , Oishi Meeko Mitsuko
Published: January 2023

The articles in this special section are based on selected papers presented at the 2021 ACM/IEEE International Conference on Cyber-Physical Systems (ICCPS 2021), a premier single-track conference that promotes development of fundamental principles that underpin the integration of cyber and physical elements, as well as the development of technologies, tools, architectures, and infrastructure for the design and implementation of CPS.  ICCPS 2021 focused on contributions related to smart and connected cities, autonomous CPS, verification and control, security and privacy, and human health and biomedical CPS.
From Inanimate Object to Agent: Impact of Pre-beginnings on the Emergence of Greetings with a Robot
Authors: Rudaz Damien , Tatarian Karen , Stower Rebecca , Licoppe Christian
Published: January 2023

The very first moments of co-presence, during which a robot appears to a participant for the first time, are often “off-the-record” in the data collected from human-robot experiments (video recordings, motion tracking, methodology sections, etc.). Yet, this “pre-beginning” phase, well documented in the case of human-human interactions, is not an interactional vacuum: It is where interactional work from participants can take place so the production of a first speaking turn (like greeting the robot) becomes relevant and expected. We base our analysis on an experiment that replicated the interaction opening delays sometimes observed in laboratory or “in-the-wild” human-robot interaction studies—where robots can require time before springing to life after they are in co-presence with a human. Using an ethnomethodological and multimodal conversation analytic methodology (EMCA), we identify which properties of the robot's behavior were oriented to by participants as creating the adequate conditions to produce a first greeting. Our findings highlight the importance of the state in which the robot originally appears to participants: as an immobile object or, instead, as an entity already involved in preexisting activity. Participants’ orientations to the very first behaviors manifested by the robot during this “pre-beginning” phase produced
a priori
unpredictable sequential trajectories, which configured the timing and the manner in which the robot emerged as a social agent. We suggest that these first instants of co-presence are not peripheral issues with respect to human-robot experiments but should be thought about and designed as an integral part of those.
Online Learning for Network Resource Allocation
Authors: Salem Tareq Si
Published: January 2023

Motivation. Connectivity and ubiquity of computing devices enabled a wide spectrum of network applications such as content delivery, interpersonal communication, and intervehicular communication. New use cases (e.g., autonomous driving, augmented reality, and tactile internet) require satisfying user-generated and machine-generated demand with stringent low-latency and high-bandwidth guarantees.
Online Resource Allocation with Noisy Predictions
Authors: Maghakian Jessica
Published: January 2023

Brief Biography: Jessica Maghakian is a final-year PhD candidate in Operations Research at Stony Brook University. She has collaborated with several industry partners and interned at Microsoft Research NYC. Jessica's research combines data-driven decision making with traditional online algorithms approaches to solve challenging resource allocation problems that arise in IT infrastructure systems. Her work has been awarded an NSF Graduate Research Fellowship, a Stony Brook University STRIDE Fellowship for excellence in visualization, science communication and decision-support, and a Best Paper Nomination at ACM e-Energy. She received her Bachelors of Science from the Massachusetts Institute of Technology (MIT) with a double major in Mathematics and Brain and Cognitive Sciences.
Public Health Preparedness for Extreme Heat Events
Authors: Hess Jeremy J. , Errett Nicole A. , McGregor Glenn , Busch Isaksen Tania , Wettstein Zachary S. , Wheat Stefan K. , Ebi Kristie L.
Published: January 2023

Heat is a dangerous hazard that causes acute heat illness, chronic disease exacerbations, adverse pregnancy outcomes, and a range of injuries. Risks are highest during extreme heat events (EHEs), which challenge the capacity of health systems and other critical infrastructure. EHEs are becoming more frequent and severe, and climate change is driving an increasing proportion of heat-related mortality, necessitating more investment in health protection. Climate-resilient health systems are better positioned for EHEs, and EHE preparedness is a form of disaster risk reduction. Preparedness activities commonly take the form of heat action plans (HAPs), with many examples at various administrative scales. HAP activities can be divided into primary prevention, most important in the pre-event phase; secondary prevention, key to risk reduction early in an EHE;and tertiary prevention, important later in the event phase. After-action reports and other postevent evaluation activities are central to adaptive management of this climate-sensitive hazard.
Effect of Hydrothermal Reaction Temperature on Fluorescent Properties of Carbon Quantum Dots Synthesized from Lemon Juice for Adsorption Applications
Authors: Deme Gadisa , Belay Abebe , Andoshe Dinsefa Mensur , Barsisa Gemechu , Tsegaye Diriba , Tiruneh Solomon , Seboka Cherinet
Published: January 2023

Photoluminescent carbon quantum dots (CQDs) were synthesized from lemon juice precursors via single-step, hydrothermal techniques under different temperatures to control the optical properties. The synthesized CQDs were characterized by PL, illuminated UV analyzer chamber, UV–vis spectroscopy, X-ray diffractometer, Fourier-transformed infrared spectrophotometry, and zeta potential techniques. The results show that the synthesized CQDs had an excellent blue–green emission extending up to the infrared region with high quantum yield (Φ) in the range of 14%–41%. The effect of reaction temperature and the aging of CQDs on the emission spectra of CQDs are also investigated. Furthermore, the adsorption effect of the synthesized CQDs was evaluated on methylene blue (MB) dyes. The result indicated the synthesized CQDs have excellent adsorbent properties with a removal efficiency of 60%–82% and an extremely fast adsorption rate of 6 × 10−2 min−1 for MB dyes.
The Microbiota-Dependent Treatment of Wuzhuyu Decoction for Chronic Migraine Model Rat Associated with Anxiety-Depression Like Behavior
Authors: Nan Nan , Wang Qi , Li Mei-Jing , Xu Yong-Song , Guo Xiao-Meng , Xu Rui , Ma Zhe , Wang Si-Hui , Li Jing , Zhao Hui , Gong Mu-Xin
Published: January 2023

We previously found that Wuzhuyu Decoction (WZYD) could affect central and peripheral 5-HT to relieve hyperalgesia in chronic migraine (CM) model rats, possibly related to gut microbiota. However, the exact role of gut microbiota has not been elucidated. Accumulating evidence points to the possibility of treating central nervous system disease via the gut-brain axis. In our study, the inflammatory soup-induced CM model rats presented depression- and anxiety-like behaviors which both related to insufficient 5-HT. It was found that antibiotic administration caused community dysbiosis, and proteobacteria became the main dominant bacteria. The bacteria related to short-chain fatty acids and 5-HT generation were reduced, resulting in reduced levels of 5-HT, tryptophan hydroxylase, and secondary bile acids. Functional prediction-revealed sphingolipid signaling pathway in CM rats was significantly decreased and elevated after WZYD treatment. The effect of WZYD could be weakened by antibiotics. The CM rats exhibited anxiety- and depression-like behavior with 5-HT and number of neurons decreased in the CA1 and CA2 regions of hippocampal. The treatment of WZYD could recover to varying degrees. Antibiotics combined with WZYD attenuate the effect of WZYD on increasing the 5-HT content and related protein expression in the brain stem, plasma and colon, reducing CGRP, c-Fos, and inflammatory factors. And antibiotics also led to colon length increasing and stool retention, so that the antimigraine effect was weakened compared with WZYD. This experiment revealed that gut microbiota mediated WZYD treatment of CM rats with anxiety-depression like behavior.
Reconstruction of Severely Atrophied Mandible and Simultaneous Implant Insertion with an Inverted Sandwich Technique
Authors: Etemadi Sh Milad , Tamizifar Alireza , Aghajani Fatemeh , Saei Mahshad
Published: January 2023

Objectives. To reconstruct and rehabilitate a severely atrophied mandible. Case presentation. A 40-year-old female patient with the chief complaint of denture instability was admitted to our care. In our opinion, the optimum reconstructive method for their severely atrophied mandible (width of 4 mm) was bone grafting with an inverted sandwich technique. 2 split-thickness autogenous calvarial grafts were attained. 4 onlay bone blocks were prepared, placed with an inverted sandwich technique, and fixed with 8 lag screws. 4 implants (Osstem, ⌀4×10 mm) were placed simultaneously, and an immediate post-operation cone beam computed tomography confirmed the proper placement of the grafts and implants. No complications were reported within 4 and 8 months following graft and implant placement. Final impressions for full dental rehabilitation were taken at the 8-month follow-up. Conclusion. Split-thickness calvarial grafts and simultaneous implant placement seem to be a very efficient and promising approach for major reconstruction of the mandible. However, further studies are recommended.
TCM Prescription Generation via Knowledge Source Guidance Network Combined with Herbal Candidate Mechanism
Authors: Hou Jiaxin , Song Ping , Zhao Zijuan , Qiang Yan , Zhao Juanjuan , Yang Qianqian
Published: January 2023

Traditional Chinese medicine (TCM) prescriptions have made great contributions to the treatment of diseases and health preservation. To alleviate the shortage of TCM resources and improve the professionalism of automatically generated prescriptions, this paper deeply explores the connection between symptoms and herbs through deep learning technology, and realizes the automatic generation of TCM prescriptions. Particularly, this paper considers the significance of referring to similar underlying prescriptions as herbal candidates in the TCM prescribing process. Moreover, this paper incorporates the idea of referring to the potential guidance information of corresponding prescriptions when model extracts symptoms representations. To provide a reference for inexperienced young TCM doctors when they prescribe, this paper proposes a dual‐branch guidance strategy combined with candidate attention model (DGSCAM) to automatically generate TCM prescriptions based on symptoms text. The format of the data used this paper is the “symptoms‐prescription” data pair. The specific method is as follows. First, DGSCAM realizes the extraction of key information of prescription‐guided symptoms through a dual‐branch network. Then, herbal candidates in the form of prescriptions that can treat symptoms are proposed in view of the compatibility knowledge of TCM prescriptions. To our knowledge, this is the first attempt to use prescriptions as herbal candidates in the prescription generation process. We conduct extensive experiments on a mixed public and clinical dataset, achieving 37.39% precision, 25.04% recall, and 29.99% F1 score, with an average doctor score of 7.7 out of 10. The experimental results show that our proposed model is valid and can generate more specialized TCM prescriptions than the baseline models. The DGSCAM developed by us has broad application scenarios and greatly promotes the research on intelligent TCM prescribing.
Mechanisms of Action of Mesenchymal Stem Cells in Metabolic-Associated Fatty Liver Disease
Authors: Yi Sitong , Cong Qingwei , Zhu Ying , Xu Qiumin
Published: January 2023

Metabolic-associated fatty liver disease (MAFLD) is currently the most common chronic liver disease worldwide. However, its pathophysiological mechanism is complicated, and currently, it has no FDA-approved pharmacological therapies. In recent years, mesenchymal stem cell (MSC) therapy has attracted increasing attention in the treatment of hepatic diseases. MSCs are multipotent stromal cells that originated from mesoderm mesenchyme, which have self-renewal and multipotent differentiation capability. Recent experiments and studies have found that MSCs have the latent capacity to be used for MAFLD treatment. MSCs have the potential to differentiate into hepatocytes, which could be induced into hepatocyte-like cells (HLCs) with liver-specific morphology and function under appropriate conditions to promote liver tissue regeneration. They can also reduce liver tissue injury and reverse the development of MAFLD by regulating immune response, antifibrotic activities, and lipid metabolism. Moreover, several advantages are attributed to MSC-derived exosomes (MSC-exosomes), such as targeted delivery, reliable reparability, and poor immunogenicity. After entering the target cells, MSC-exosomes help regulate cell function and signal transduction; thus, it is expected to become an emerging treatment for MAFLD. In this review, we comprehensively discussed the roles of MSCs in MAFLD, main signaling pathways of MSCs that affect MAFLD, and mechanisms of MSC-exosomes on MAFLD.
Successful Expulsion of a Golf Ball from the Sigmoid Colon Using Volume Laxatives
Authors: Grantham James P. , Hii Amanda , Bright Tim , Liu David
Published: January 2023

Background. Rectal foreign bodies form a surprisingly frequent cause of presentation to the emergency department. The materials inserted constitute a wide range of size, shape, and texture with each presenting a unique set of challenges. Despite a seemingly innocuous presentation, if not recognised early and managed accordingly, significant complications can develop including obstruction, perforation, and sphincteric injury. The existing doctrines advocate endoscopic intervention after simple measures fail and advise against the use of laxative therapy due to concerns for complications that may arise. The authors of this study challenge this notion, provided certain conditions are met. Case Presentation. We report the case of a 14-year-old boy who inserted a golf ball into his rectum, which subsequently migrated proximally into the sigmoid colon on plain radiographic films. The patient was asymptomatic on presentation, and there was no clinical evidence of bowel injury or mechanical bowel obstruction. Endoscopic removal of the golf ball was pursued under general anaesthesia. Despite protracted efforts, the golf ball was not able to be retrieved endoscopically. In an attempt to avoid aggressive surgery, volume laxatives were administered with successful passage of the golf ball several hours later. Conclusions. This case discusses the unique technical challenges, which may be encountered when attempting to retrieve a large, spherical, and non-confirming foreign body entrapped above the rectosigmoid junction and how these factors can complicate endoscopic retrieval. The authors advocate that in the absence of a mechanical bowel obstruction, patients with foreign bodies possessing physical properties that are amenable to spontaneous passage, a trial of strong aperients, should be considered first line. The author’s contention is that direct escalation to removal of foreign body in theatre can be resource draining and may expose the patient to additional risk.
On the Construction of Traveling Water Waves with Constant Vorticity and Infinite Boundary
Authors: Shrestha Pawan , KC Durga Jang , Sharma Ramjee
Published: January 2023

The issue of whether there is a closed orbit in the water waves in an infinite boundary condition is an outstanding open problem. In this work, we first discuss the various developments on the structure of water waves in the context of finite bottom conditions. We then focus on the behavior of water for the kinematic boundary for the infinite depth. We present some findings to address this issue by creating a water wave profile for the zero and constant vorticity conditions through the application of the Crandall–Rabinowitz theorem.
Methicillin-Resistant and Biofilm-Producing Staphylococcus aureus in Nasal Carriage among Health Care Workers and Medical Students
Authors: Saud Bhuvan , Khatri Gita , Amatya Neetu , Paudel Govinda , Shrestha Vikram
Published: January 2023

Antimicrobial resistance (AMR) is a global threat. It has been portrayed as a slow tsunami. Multidrug resistance and extensive drug resistance exacerbate the already-existing AMR problem. The aim of the study was to access the colonization of methicillin-resistant and biofilm-producing Staphylococcus aureus among healthcare workers (HCWs) and medical students (MSs). A cross-sectional study was designed. A total of 352 participants (176 were HCWs and 176 were MSs) were enrolled from different hospitals and medical colleges in Kathmandu, Nepal. Nasal cavity swab samples were collected and inoculated on Mannitol salt agar at standard in-vitro environmental conditions. Isolates were identified based on colony characteristics, staining properties, and biochemical tests. Identified isolates were tested for antibiotic susceptibility and biofilm production. Out of 352 participants, 65.3% were S. aureus carriers; among the carriers, 52.2% were HCWs and 47.8% were MSs. Of the total isolates, 47.4% isolates were methicillin-resistant S. aureus (MRSA) and 73.9% isolates were multidrug-resistant (MDR). Among MDR isolates, out of 109 MRSA isolates, 86.2% were MDR and out of 121 MSSA isolates, 62.8% were MDR where isolates were mainly resistant to erythromycin. In addition, 68.7% isolates were biofilm-forming; the results were similar in both MRSA and MSSA. Variables such as profession and educational level showed statistical significance (

p

 < 0.05) with MRSA, MSSA, and biofilm producers. In conclusion, asymptomatic colonization of healthcare workers by drug-resistant S. aureus is increasing at alarming rates. This reflects the lack of proper hygiene practice as well as improper disinfection of workplace of study population.
Injuries in Physical Education Teacher Students: Differences between Sex, Curriculum Year, Setting, and Sports
Authors: Barendrecht Maarten , Barten Carl C. , van Mechelen Willem , Verhagen Evert , Smits-Engelsman Bouwien C. M.
Published: January 2023

Background. Injury risk is high in Physical Education Teacher Education (PETE) students. Insights into specific injury locations per sex, setting, sports, and curriculum year are needed to develop preventive measures. Purpose. To compare injury distributions by body locations in PETE students and how these distributions differ by sex, type, onset, curriculum year, settings, or sports. Methods. In a historical cohort study over 14 years, data from 2899 students (male 76.2%, n = 1947) enlisted in the first three years of a PETE curriculum were analysed. Injuries reported at the institution’s medical facility were categorised per sex, body location, onset, type, setting, sports, and curriculum year. Results. Forty-three percent (n = 1247) of all students (female 54.9%, n = 523, male 37.2%, and n = 429) reported a total of 2129 injuries (freshmen 56.4%; 2nd year 28.2%; 3rd year 15.5%). The most prevalent sudden onset injury locations (63.4% of all injuries) were the ankle (32.5%) and knee (16.6). The most prevalent gradual onset injuries were the lower leg (27.8%) and knee (25.2%). Joint/ligament injuries (45.8%) and muscle/tendon injuries (23.4%) were the most prevalent injury types. Proportions for injury locations and injury types differed significantly between curriculum years. Injury prevalence per setting and sport differed significantly between the sexes. Injury locations differed significantly between sports and between the sexes per sport. Conclusion. A differential approach per injury location, onset, type, sex, setting, sports, and curriculum year is needed to develop adequate preventive measures in PETE studies. The engagement of precurricular, intracurricular, and extracurricular stakeholders is needed in the development of these measures.
Performance Optimization of Slotted Blades for Low-Specific Speed Centrifugal Pumps
Authors: Ke Qidi , Tang Lingfeng
Published: January 2023

Centrifugal pumps are widely used for the transport of fluids, but low-specific-speed centrifugal pumps widely have problems with serious backflow and low efficiency. In this paper, a low-specific-speed centrifugal pump with a specific speed of 55 is used as a research object. By combining numerical simulation and orthogonal experiment, the pressure distribution and velocity distribution of the flow channel are analyzed, the priority of each geometric factor for slits on pump performance is determined, the geometric parameter structure of the slotted blade is optimized by entropy weight on TOPSIS, the optimal impeller slit solution is obtained. The results show that with a balance of head and efficiency, the order of influence of the factors is: slit center width

b
>

diameter of slit

D
>

shrinkage ratio of slit

f
>

depth of slit

h
>

deflection angle of slit

β

. The optimal combination of slit geometry parameters is: slit center width is 3 

m
m

, diameter of the slit is 200 

m
m

, shrinkage ratio of the slit is 0.5, depth of the slit is 6 

m
m

, and the deflection angle of the slit is 20°. Through ANSYS FLUENT simulation and experiment of closed pump experiment system, confirmed that hydraulic performance is improved.
AC-DC UPF charging circuit for two-wheeler electric vehicle application
Authors: Karike Swathi , Donepudi Sudha Rani , Raju Kuthuri Narasimha
Published: January 2023

Extinction and the emission of greenhouse gases from fossil fuels led the field of energy studied took a revolutionary turn towards non-conventional natural sources achieving zero-pollution power. Electric vehicles (EVs) are trending in this new era to reduce the global warming. Due to limitations in storage systems, electric vehicles are not much popular but to reduce the pollution from vehicles, EVs are in must condition and recommended for (public/personal) transportation. EV (battery) is charged through a DC source (converting the available AC supply to DC). The conversion process diminishes the input source power factor and is a worrying factor. This paper addresses the power factor issue while charging the battery of EVs. The paper focuses on maintaining the unity power factor on the source side while charging the battery of the EV from AC-DC conversion. The model is developed and the results are discussed (for three different battery levels) using MATLAB/Simulink software.
Modelling methods and structure topology of the switched reluctance synchronous motor type machine: a review
Authors: Abdullah Norrimah , Shukor Fairul Azhar Abdul , Othman Raja Nor Firdaus Kashfi Raja , Ahmad Suhairi Rizuan Che , Nasir Nur Ashikin Mohd
Published: January 2023

The switched reluctance synchronous motors (SRSM) have been utilised as replacements for induction motors (IM) and permanent magnet synchronous motors (PMSM). The SRSM is a feasible solution for electric motors because of its robust and straightforward structure, resulting in low maintenance, manufacturing, and operating costs. However, the SRSM has several flaws, including low mean torque, low torque density and excessive torque ripples. The SRSM performance can be improved by considering the structure topology and driving system. This paper reviewed the performance characteristic of SRSM based on the structural topology. Several literature studies on the segmented structure topologies of SRSM were compared with the conventional structures. The performance of the SRSM can be estimated by using either numerical or analytical methods. The FEA and BEM are numerical techniques extensively used to optimise electrical motor performance. Although the numerical method can accurately estimate motor performance, the significant drawback is quite complicated, time-consuming, and difficult to implement the control algorithm with FEA software. However, the analytical method, especially the MEC method, is faster in evaluating motor performance and significantly reduces computational complexity, either with or without solving high-dimensional system matrices.
A universal model of three-phase asynchronous motors for electrical power system analysis
Authors: Solar Laura Collazo , Montiel Ángel A. Costa , Llanes Miriam Vilaragut , Santos Vladimir Sousa , Núñez Carlos de la Incera
Published: January 2023

The high incidence of three-phase asynchronous motors (TAM) in global energy consumption and its influence on the operation of electrical systems makes it necessary to develop models that allow their analysis effectively. Based on this, this paper presents a universal model of TAM based on the relationship between the active and reactive power of the TAM and the deviation of voltage and frequency. It can be applied to any general-purpose TAM and is very useful when representing these motors in electrical power system studies. The model parameters were obtained from a statistical analysis performed on 70 TAM of different classifications. The results are validated by comparing them with those obtained from the solution of the equivalent circuit, demonstrating its validity by less than 6% errors.
A novel topology for single-inductor single input triple output DC-DC power converter
Authors: Sreelatha Edara , Pandian Alagappan , Kuppusamy Mohana Sundaram
Published: January 2023

A single input triple output (SITO) DC-DC power converter circuit derived from a single inductor boost converter is proposed in this paper. Like multi-level inverters, many electronic circuit applications need multiple DC output voltages. Using different power supply circuits increases the system cost, size, and weight. The multiple-input, multiple-output power conversion system integrates multiple sources and outputs and uses a single controller. The integrated operation results in simple structure, low cost, and size, making it suitable for different power conversions, including renewable sources. In this series, the proposed single-inductor single-input triple-output (SI-SITO) DC-DC power converter is designed to produce three independent DC output voltages and two dependent output voltages. The proposed circuit is derived from a conventional boost converter made up of a single inductor. The advantage of this proposed circuit is the use of minimum components and simple control strategies. The design and performance analysis is done using Mat Lab simulation. The experimental results show the benefits of the proposed circuit.
Reduction in the use of fossil fuels by improving the interconnection power system oscillation
Authors: Tsebia Mohammed , Bentarzi Hamid
Published: January 2023

Many international organizations have called for reducing usage of renewable energy as a means to reduce carbon dioxide emissions, this paper studies the case of electricity production based to fossil fuels. Currently existing solutions is to shift from fossil fuels to clean renewable energy. Electrical interconnections are used between large-scale areas; these interconnections have a major problem that is the phenomenon of oscillations. The amount of fossil energy used by power plants depends on the electrical load required. with these conditions it is not possible to reduce the amount of energy required to satisfy the electrical load required. The solution proposed in this paper is the improvement of interarea oscillation using phasor measurement unit technology for real-time monitoring and accuracy of measurements. We tested the proposed solution for the north African power system. The results show the importance of improving interconnection networks to reduce fossil fuels use.
Voltage regulation of DC micro grid system using PV and battery coupled SEPIC converter
Authors: Rao Rajaboyana Narendra , Sreenivasulu Meda , Ramakrishna Busharaju
Published: January 2023

This paper deals with the voltage regulation of DC micro grid system using photovoltaic and battery coupled single-ended primary-inductor converter (SEPIC) converter. SEPIC converter is a DC-to-DC boost converter, it can produce non pulsating DC current with less ripples when compared to buck and buck boost converters. Non pulsating DC current is the demanding condition required in maximum power point tracking (MPPT) applications and battery charging. This paper presents the simulation of the converters for both open and closed loop systems. Firstly, the proposed PV coupled SEPIC converter and the battery coupled buck boost converters are integrated to regulate the voltage in micro grid, and it is compared with the conventional methods in terms of output voltage, ripple voltage and power. The ripple voltage has been reduced to 0.1 V from 0.3 V in the proposed method. Secondly, PI and PID controllers are employed individually to SEPIC and buck boost converter for the voltage regulation of the DC micro grid system. The performance of the closed loop analysis is done in terms of time domain specifications, and it reveals that PID controller has the better response. The proposed system is simulated using MATLAB/Simulink and the prototype has been developed to verify the simulated results.
Modelling of a PV system: a case study Kosovo
Authors: Bylykbashi Blerina , Filkoski Risto V.
Published: January 2023

The modeling of a photovoltaic (PV) system used for the needs of the industrial sector is presented in this paper. Its analysis was done analytically using real one-year measurements during the system monitoring period and software-wise using premium PV*SOL software. System generated energy, maximum power point (MPP) voltage, final yield and average generated power are included in the analysis. The highest summer energy produced for real conditions is in July with 2811.86 kWh, the highest MPP voltage also presented in July with a value of 400 V. The final yield with a value of 103.07 kWh/kWp and the highest average power 16.6 kW as well. during the month of July. Where it can be seen that due to the Mediterranean atmospheric conditions in the place of application of the PV system, during the summer months the parameters are higher than during the winter months.
Grade 11 Students’ Multiple Intelligences: Inputs Towards Developing and Evaluating Technologically-Mediated Learning Materials on Discourse Development Patterns
Authors: Discutido Roy A.
Published: January 2023

Learners around the world possess varying degrees of intelligence. With that, teachers should be aware of the multiple intelligence of the learners to consider them when preparing teaching materials or classroom activities. This is to aid the deteriorating performance of the learners specifically in language learning. As seen in the results of international assessments or even in national achievement tests, learners showed that they were not able to master the required competencies and one of the reasons is the ability to comprehend.  This study aimed to determine the extent of use of the multiple intelligences of the Grade 11 students of Cainta Senior High School in the Division of Rizal which served as inputs in developing and evaluating technologically-mediated learning materials on discourse development patterns during the school year 2020-2021. With two groups of respondents, the students and the teachers, the developed material based on the multiple intelligence of the learners was evaluated in terms of authenticity, automaticity, clarity, comprehensibility, meaningfulness, and technicality. Using t-test, the gathered data was treated. The results revealed that there is no significant difference between the evaluation of students and teacher respondents whom both said that the technologically-mediated language learning material is very highly acceptable for teaching and learning the different discourse development patterns using the students’ multiple intelligences.
Selected Profile and Factors Affecting the Academic Performance in Social Studies of Grade 10 Students: Input for an Intervention Program
Authors: Nicolas Rowena E.
Published: January 2023

Education is deemed to be an important tool for social mobility. Because of this, quality education is one of the many goals of Filipinos who wanted to have an improvement in their lives. However, one major issue in Philippine education is the poor academic performance of the students. Thus, this paper focuses on the profile of selected Grade 10 students of Bagong Silangan High School and its impact on their academic performance in Social Studies. The study utilized a descriptive research design.  Pearson correlational statistical analysis was done to determine the relationship among variables. Results showed that most of the student respondents’ parents were high school graduates (43.81%), do not have occupation (57.78%), have family monthly income ranging from 10,000-19,999 (43.17%) and have 3 siblings (25.40%).  Results also revealed that the extent of the factors affecting the academic performance of students in Social Studies in terms of teachers’ competency, learning environment, parents’ aspiration, student-parents relationship and peer relationship are all high. In addition, there is a moderate positive and negative correlation between the factors affecting the academic performance of students and their academic performance in Social Studies in terms of teachers’ competency, parents’ occupation, learning environment and peer relationship with Pearson r’s of 0.015,0.403, - 0.069 and -5984.   An intervention program was recommended and prepared based on the results of the study.
Delivering A Transformational Learning Experience Online
Authors: Vergara Raymond Allan
Published: January 2023

This study aims to explore how to deliver a transformational learning experience in an online classroom. Using qualitative action research, it examined expectations and experience of learners who participated in an online event marketing undergraduate course for a term. This study finds that experiential lessons, such as storytelling lectures and collaborative project requirements, and the teacher’s caring attitude and enthusiasm help learners master concepts, enhance skills, and develop positive attitudes, values, and beliefs towards learning. It also finds that teachers should focus on nurturing learner engagement to keep them motivated and persist in the course. This study contributes to the discussion on event marketing and management pedagogy, transformational teaching, and transformative learning experience.
Open Admission’s Grade-Entry Requirements and Academic Performance in Junior High School: An Analysis
Authors: De Leon Orlando Jr.
Published: January 2023

Private high-school admission procedures frequently involve testing prospective students to determine their eligibility for enrollment, but this changed because of the COVID-19 pandemic. Numerous schools were adversely affected by the situation. To survive the economic crisis and declining enrollment among schools, many private schools altered their admissions policies. Even admission test providers have switched to online testing with increased prices of two to three times. The introduction of open admission did away with the requirement for an entrance exam but required applicants to submit their grades from the previous two academic years, which served as a benchmark for their potential academic performance in the school. The researcher used this chance to conduct a descriptive-correlational study to determine whether the grade-entry requirements can accurately predict the learners' academic performance. The general averages of the respondents for the previous two academic years were correlated with their general averages for the current academic year, which served as a quantitative representation of their academic performance at the school where they were admitted. The learners' grade-entry requirements revealed a statistically significant relationship between those averages and their academic performance in the school. Furthermore, the school of origin and initial admission status, whether qualified or waitlisted, were also correlated with their general averages, and it was found that only the latter has a statistically significant relationship with academic performance. The researcher suggested that grade-entry requirements could already be used as a reliable indicator of the prospective academic performance of admission applicants, even without an admission test.
Prevalence of Burnout Among Health Care Workers at Dr. Saiful Anwar General Hospital During COVID-19 Pandemic: A Cross-Sectional Study
Authors: Daryanto Besut , Putri Frilya Rachma , Kurniawan Jemmy , Ilmawan Muhammad , Fajar Jonny Karunia
Published: January 2023

Pendahuluan: Sebagai garda terdepan dalam penanganan COVID-19, tenaga kesehatan merupakan salah satu pihak yang paling terdampak oleh pandemi COVID-19. Menghadapi berbagai macam tantangan, seperti risiko tertular dan menularkan virus, tenaga kesehatan memiliki risiko lebih besar untuk mengalami burnout.

Tujuan: Penelitian ini bertujuan untuk melihat prevalensi burnout beserta faktor yang berasosiasi terhadap burnout pada tenaga kesehatan di Rumah Sakit Umum Daerah Dr. Saiful Anwar (RSSA) selama pandemi COVID-19.

Metode: Penelitian ini menggunakan desain studi potong-lintang dengan menggunakan kuesioner yang disebarkan secara daring kepada seluruh tenaga kesehatan di RSSA. Penilaian burnout menggunakan Maslach Burnout Inventory-Human Services Survey (MBI-HSS). Asosiasi dianalisis menggunakan regresi logistik dan disajikan dalam odds ratio (OR) dengan confidence interval 95% (CI 95%).

Hasil: Sebanyak 444 tenaga kesehatan di RSSA ikut serta dalam penelitian ini. Sebanyak 21,6% dari seluruh partisipan mengalami burnout. Partisipan dengan usia >40 tahun memiliki risiko 3,7 kali lebih rendah mengalami burnout dibandingkan dengan yang berusia <30 tahun. Sedangkan partisipan yang bekerja 70-100 dan >100 jam per minggu, masing-masing memiliki risiko 2,4 dan 4,5 kali lipat lebih tinggi dibandingkan dengan yang bekerja <70 jam per minggu.

Kesimpulan: Hampir seperlima tenaga kesehatan di RSSA mengalami burnout selama pandemi COVID-19, terutama mereka yang berusia <30 tahun dan bekerja >70 jam per minggu.
Evaluasi Profil kuman dan Sensitivitas Antibiotik dari Pasien Pneumonia selama Setahun di RSUD. Saiful Anwar Malang
Authors: Tantular Rezki , Jane Sugiri , Andreas Santoso , Kristo Kurniawan , Yusuf Mustofa , Abdul Haris
Published: January 2023

Pendahuluan: Pneumonia adalah infeksi pada jaringan paru(alveoli) yang disebabkan oleh bakteria,virus atau jamur

Metode: Studi retrospektif di Rumah Sakit Saiful Anwar Malang pada bulan Januari – Mei 2019. Sampel yang digunakan adalah sampel sputum, spesimen  bronkoskopi dan cairan pleura dari pasien pneumonia pada Instalasi Rawat Inap, Rawat Jalan, dan Ruang Perawatan Intensif. Pengolahan data menggunakan Microsoft Excel 2016.

Hasil: Pneumonia lebih sering terjadi pada laki-laki (58%) dibandingkan perempuan (42%) dengan rata-rata usia 56- 75 tahun. Profil kuman didapatkan patogen terbanyak pada sputum dari Instalasi Rawat Inap adalah Klebsiella pneumoniae ss. pneumoniae sensitif Piperacillin/Tazobactam (sensitivitas 100%); dari Rawat Jalan adalah Klebsiella pneumoniae ss. pneumoniae sensitif Amikacin (sensitivitas 100%); dari Ruang Perawatan Intensif adalah Klebsiella pneumoniae ss. pneumoniae sensitif Ceftazidim (sensitivitas 100%).

Kesimpulan: Patogen terbanyak pada sampel dari Instalasi Rawat Jalan adalah Klebsiella pneumoniae ss. pneumoniae sensitif Ertapenem (sensitivitas 100%) sedangkan dari Ruang Perawatan Intensif adalah Pseudomonas aeruginosa spesimen bronkoskopi. Patogen terbanyak pada cairan pleura dari Instalasi Rawat Inap adalah Pseudomonas aeruginosa sedangkan dari Ruang Perawatan Intensif adalah Escherichia coli. Tidak dapat dilakukan uji sensitivitas antibiotik pada isolat sampel spesimen bronkoskopi dari Instalasi Rawat Jalan, sampel cairan pleura dari Instalasi Rawat Inap serta Perawatan Intensif karena jumlah isolat yang kurang dari 30.
Sexual dysfunction in Hypertension: Challenge in diagnostic and treatment
Authors: Fatma Siti
Published: January 2023

Disfungsi seksual merupakan kasus yang cukup banyak terjadi, baik sebagai komplikasi dari penyakit kronik atau salah satu gejala dari depresi, tetapi jarang didiagnosis sehingga masalah tersebut tidak teratasi dan bisa menyebabkan penurunan kualitas hidup pasien. Kesulitan dalam diagnosis maupun terapi ini bisa terjadi karena disfungsi seksual merupakan keluhan yang jarang diungkap oleh pasien terutama penderita penyakit kronik, selain itu disfungsi seksual juga mempunyai hubungan dua arah dengan kondisi depresi. Skrining faktor hormonal, vaskular, neurogenik, dan farmakologi perlu dikerjakan untuk penilaian klinis pasien dengan disfungsi seksual, sehingga bisa diberikan tindak lanjut yang adekuat.
Nean Oju Obá: enfrentamentos e aquilombamento de estudantes negras(os) da Universidade Federal da Paraíba
Authors: Oliveira Rosiane Trabuco , Velame João Vítor , Silva Weverson Bezerra , Silva Uliana Gomes da , Santos Ana Margarida Andrade , Santiago Marina Prado
Published: January 2023

Este artigo apresenta as articulações de estudantes e egressos negros(as) dos cursos de Antropologia e Ciências Sociais, assim como da pós-graduação em Antropologia da Universidade Federal da Paraíba e discute as relações étnico-raciais, racismos, identidade e seus efeitos sobre a dinâmica do campo científico da antropologia. O debate parte da atuação do coletivo Nean Oju Obá para garantir o ingresso de candidates negres na Pós-Graduação em Antropologia por meio do Curso Negritudes na Pós. Em suma, o Coletivo forma um espaço de resistência e aquilombamento, na defesa de direitos e combate aos racismos, sobretudo, o racismo institucional.
Vencendo demanda! Rita Segato e algumas reflexões sobre a colonialidade do poder no campo da Antropologia
Authors: Assis Yérsia Souza de , Gomes Larisse Louise Pontes
Published: January 2023

O livro de Segato, como bem sintetizado no título, reúne oito ensaios produzidos pela professora em diferentes momentos de sua carreira. Nessa edição, as leitoras e leitores contam também com um prefácio pensado para o Brasil junto à introdução, intitulada “Colonialidade do poder e antropologia por demanda”, seguida dos ensaios. Assinalamos também que a obra conta com uma nota produzida pelas tradutoras: Danú Gontijo e Danielli Jatobá.