bluuebunny/crossref_metadata_2025_split huggingface dataset:
Decoupled compact ultra‐wideband MIMO antennas covering 3300∼6000 MHz for the fifth‐generation mobile and 5GHz‐WLAN operations in the future smartphone
Authors: Wong Kin‐Lu , Chen Yu‐Han , Li Wei‐Yu 
Published: September 2023

AbstractDecoupled compact UWB multi‐input multi‐output (MIMO) antennas to cover 3300∼6000 MHz in the future smartphone applications are presented. The obtained UWB can cover the fifth‐generation (5G) mobile operation in 3300∼5000 MHz and 5GHz‐wireless wide area network (WLAN) operation in 5150∼5875 MHz to achieve seamless wireless internet access in future wireless communications. The UWB MIMO antennas are based on the coupled‐fed inverted‐F antenna in the planar structure, allowing it easy to implement by printing on the inner surface of the side‐edge frame of the smartphone. Good decoupling between two UWB antennas spaced by 3 mm only and having a small total length of 35 mm (about 0.385λ at 3300 MHz) is obtained without external decoupling structures. The isolation of two nearby UWB antennas is better than 10 dB and the envelope correlation coefficient (ECC) thereof is less than 0.1 in 3300∼6000 MHz. With two UWB antennas as a building block, it is easy to implement at least four MIMO antennas in the future smartphone for at least 4 x 4 MIMO operations in 3300∼6000 MHz for future wireless communications. Details of the proposed UWB MIMO antennas for future smartphone applications are presented.
A Frequency Selective Feedback Receiver for Multi‐Bands Operation
Authors: Kim Hyoung Soo , Beck Sungho , Chae Kwanyeob , Lim Kyutae , Laskar Joy , Tentzeris Manos M. 
Published: September 2023

AbstractFor a frequency‐division duplex (FDD) wide‐band code‐division multiple‐access (WCDMA) system, transmit (TX) signal leakage at the receiver input degrades the receiver performance. To cancel this TX leakage, a frequency selective feedback was previously proposed, but it had an unpredictable feedback loop characteristic due to the uncertainty of the duplexer impedance. This paper presents a new method to achieve TX leakage cancellation regardless of the duplexer impedance. In addition, a local oscillator (LO) phase shift technique is proposed to apply this method for multi‐band. A receiver adopting these proposed techniques is implemented using a 0.18‐μm CMOS process to prove the concept. The measured TX attenuations of the high‐ and low‐band are 17‐dB and 20‐dB, respectively, and the measured noise Figure (NF) degradations of the high‐ and low‐band are 0.6‐dB and 0.5‐dB, respectively. The measurement results demonstrate effectiveness of the proposed techniques.
Interpersonal violence in colonial era in Papua, Indonesia: A case study of trauma patterns of a Biak individual
Authors: Putri Rizky Sugianto , Koesbardiati Toetik , Murti Delta Bayu , Kinaston Rebecca Lorraine 
Published: September 2023

AbstractIn many world regions, conflict resulting from power struggles can lead to interpersonal violence. In the recent colonial past, tribes in Papua and Papua New Guinea engaged in war and raiding that resulted in interpersonal violence, abduction, slavery, and casualties. This case study focuses on the analysis of a colonial period individual from Biak Island, Papua, Indonesia, using a biocultural approach. Only the cranium was available for analysis. Standard osteological methods were used to determine that the individual was likely a young to mid‐aged (26‐ to 42‐year‐old) adult female. Skeletal lesion type and patterning were observed macroscopically with digital photography and a newly developed ultraviolet light photography technique. Multiple sharp force trauma injuries were identified on the frontal, temporal, and occipital bones of the cranium. Interpreting the pattern of trauma within the context of the colonial period in Papua, it is suggested that this female individual may have been murdered, possibly as a slave taken during tribal warfare. This report is a significant resource for future bioarchaeological studies in Papua as it provides one of the only accounts of skeletal trauma during the colonial period in the region.
A modified tilt controller for AGC in hybrid power system integrating forecasting of renewable energy sources
Authors: Vidyarthi Prabhat Kumar , Kumar Ashiwani 
Published: September 2023

AbstractThis article emphasizes the intermittent characteristics of renewable energy sources (RESs) and explores the role of forecasting in improving the performance of the automatic generation control (AGC) mechanism of the interconnected power system. Due to hybridization of power system basic AGC controller (PID, TID, and ID‐T) are insufficient to stabilized the system parameters. So, a new type of fractional order integral tilted derivative controller (FIDN‐T) has been proposed, which give better performance in terms of settling time, undershoot and overshoot in case of RESs with real data forecasting also. FIDN‐T has been compared with some existing controller which give the results better than basic controller. In order to optimize the different parameters of the proposed controller, a new modified Opposition‐based Sea‐horse Optimization (OSHO) algorithm has been proposed. The OSHO is compared with a few existing, well‐known meta‐heuristic algorithms to show its superiority. The analysis has been conducted under different operating conditions, including step and random disturbances as well as the IEEE‐39 bus, to verify the robustness as well as adaptability of the suggested controller. The comprehensive results of the studies provide strong evidence in support of the effectiveness and efficacy of the suggested control methods and suggest that it has the potential to be implemented in real‐world power systems for improved performance and stability.
The open‐loop and closed‐loop Nash equilibrium of the local and remote stochastic game for multiplicative noise systems with inconsistent information
Authors: Li Xin , Qi Qingyuan 
Published: September 2023

AbstractIn this article, the local and remote stochastic nonzero‐sum game for a multiplicative noise system with inconsistent information is investigated, in which the multiplicative noise can cause nonlinear characteristics of linear systems, making it difficult to solve the optimal linear feedback Nash equilibrium. For the considered local and remote stochastic nonzero‐sum game, the local player and the remote player obtain different information sets, which leads to inconsistent information between the two players. The goal is that each player is desired to minimize their own cost function. Our approach is based on a combination of orthogonal decomposition and completing square techniques, which allow us to derive a set of coupled Riccati equations that characterize the optimal feedback explicit (closed‐loop) Nash equilibrium. The contributions of this article are summarized as follows. First, the optimal open‐loop Nash equilibrium is obtained in terms of the forward and backward stochastic difference equations (FBSDEs) by adopting the Pontryagin maximum principle. Second, the closed‐loop Nash equilibrium of this local and remote stochastic nonzero‐sum game for a multiplicative noise system with inconsistent information is obtained by using the orthogonal decomposition methods. Finally, a simulation example is given to illustrate the validity of theoretical results and discuss potential extensions to more complex systems.
Cost‐effectiveness analysis of dinutuximab β for the treatment of high‐risk neuroblastoma in China
Authors: Shen An‐Le , Zhao Jie , Yu Li‐Ting , Zhang An‐An , Wu Bin , Fang Ye , Han Ya‐Li , Li Chen‐Sui‐Zi , Li Zhi‐Ling , Gao Yi‐Jin , Zhang Shun‐Guo 
Published: September 2023

AbstractBackgroundDinutuximab β can be used to treat children with high‐risk neuroblastoma (NB). Due to its high price, whether dinutuximab β is cost‐effective for the treatment of high‐risk NB remains uncertain. Therefore, assessing the cost‐effectiveness of dinutuximab β in children with high‐risk NB is of high importance.MethodsThe health utilities and economic outcomes in children with high‐risk NB were projected using a partitioned survival model. The individual patient data (IPD) of add‐on treatment with dinutuximab β (GD2 group) were derived from the literature, while the IPD of traditional therapy (TT group) were obtained from retrospective data of Shanghai Children's Medical Center. Treatment costs included drugs, adverse event‐related expenses, and medical resource use. Utility values were obtained from the literature. Costs and quality‐adjusted life‐years (QALYs) were measured over a 10‐year time horizon. Deterministic sensitivity analyses (DSA) and probabilistic sensitivity analyses (PSA) were also conducted.ResultsCompared with the TT group, QALY increased in the GD2 group by 0.72 with an increased cost of $171,269.70, leading to an incremental cost‐effectiveness ratio of 236,462.75$/QALY. DSA showed that the price of dinutuximab β was the main factor on the results than other parameters. Compared with the TT group, the GD2 group could not be cost‐effective in the PSA at the $37,920/QALY threshold.ConclusionResults found that dinutuximab β is not a cost‐effective treatment option for children with high‐risk NB unless its price is significantly reduced.
Revolutionizing epoxy performance: A new flame retardant with phosphorus and maleimide for enhanced cure behavior, thermal stability, flame retardancy, and mechanical properties
Authors: Ranjith Ayyappan , Mahendran Arunjunai Raj , Rajkumar Thangamani 
Published: September 2023

AbstractA novel phosphorus‐based maleimide, tris[4‐(2,5‐dioxopyrrol‐1‐yl)phenyl] phosphite (TDPPI), was employed as a flame retardant in epoxy with moderate transparency, enhanced thermal stability, and improved mechanical strength. SEM studies ascertained the uniform dispersion of TDPPI and its compatibility with the epoxy. Differential scanning calorimetry showed that the epoxy compounded with 2.5 wt% of TDPPI achieved 100% curing with the glass transition temperature of 43.8°C. The thermogravimetric study revealed that the presence of 2.5 wt% of TDPPI in epoxy increased the residual mass found at 600°C by 23%. The epoxy thermoset compounded with 2.5 wt% of TDPPI passed the Underwriter's Laboratory (UL‐94) test with V‐1 classification and achieved the limiting oxygen index of 30.7% with a reduced burning rate of about 58.7%. At 1.5 wt% of the TDPPI, the resulting epoxy thermoset exhibited an enhancement in the tensile strength (23%), Young's modulus (37%), flexural strength (9%), and Izod impact strength (37%) relative to the neat epoxy. In conclusion, 2.5 wt% of TDPPI is adequate for imparting flame retardancy to epoxy composites with improved mechanical strength because of the maleimide‐phosphorus synergistic effect.Highlights
TDPPI is a phosphorus and maleimide containing flame retardant.
TDPPI improves thermal stability, flame retardancy and mechanical strengths.
Only 2.5 wt% of TDPPI is required for epoxy to achieve high flame retardancy.
Maleimide presence lowers phosphorus requirement for epoxy flame retardancy.
TDPPI is a promising new flame retardant material for epoxy.
Theoretical insights into photo‐induced behavior for 3‐(1H‐phenanthro[9,10‐d]imidazol‐2‐yl)‐9‐phenyl‐9H‐carbazol‐4‐ol fluorophore: Solvation effects
Authors: Liu Chang , Chen Han , Feng Lu , Zhao Jinfeng , Fan Liming 
Published: September 2023

AbstractExcited‐state intramolecular proton transfer (ESIPT) reaction, as one of the most fundamental photochemical behaviors, plays a crucial role in the design of novel optical materials. This study investigates the photo‐induced hydrogen bonding behaviors and related ESIPT process of 3‐(1H‐phenanthro[9,10‐d]imidazol‐2‐yl)‐9‐phenyl‐9H‐carbazol‐4‐ol (CHPHI) in solvents with varying polarities. Based on analyses of the core‐valence bifurcation (CVB) index, geometrical structure parameters, topological analysis, and infrared (IR) vibrational spectra, we infer that light excitation facilitates the enhancement of intramolecular hydrogen bonding. This phenomenon can promote the ESIPT process. In particular, we have observed that the enhancement of hydrogen bonding becomes more pronounced as solvent polarity weakens. To further investigate the relationship between solvent polarity and ESIPT behavior, we conduct an exploration of the frontier molecular orbitals (MOs) in CHPHI. Finally, by comparing the magnitudes of excited‐state barriers in different solvents, we claim that nonpolar solvents drive the ESIPT reaction for CHPHI fluorophore.
Rapid changes of mRNA expressions of cardiac ion channels affected by Torsadogenic drugs influence susceptibility of rat hearts to arrhythmias induced by Beta‐Adrenergic stimulation
Authors: Hadova Katarina , Kmecova Jana , Ochodnicka‐Mackovicova Katarina , Kralova Eva , Doka Gabriel , Bies Pivackova Lenka , Vavrinec Peter , Stankovicova Tatiana , Krenek Peter , Klimas Jan 
Published: September 2023

AbstractDrug‐induced long QT syndrome (LQTS) and Torsades de Pointes (TdP) are serious concerns in drug development. Although rats are a useful scientific tool, their hearts, unlike larger species, usually do not respond to torsadogenic drugs. Consequently, their resistance to drug‐induced arrhythmias is poorly understood. Here, we challenged rats with rapid delayed rectifier current (Ikr)‐inhibiting antibiotic clarithromycin (CLA), loop diuretic furosemide (FUR) or their combination (CLA + FUR), and examined functional and molecular abnormalities after stimulation with isoproterenol. Clarithromycin and furosemide were administered orally at 12‐h intervals for 7 days. To evaluate electrical instability, electrocardiography (ECG) was recorded either in vivo or ex vivo using the Langendorff‐perfused heart method under basal conditions and subsequently under beta‐adrenergic stimulation. Gene expression was measured using real‐time quantitative PCR in left ventricular tissue. Indeed, FUR and CLA + FUR rats exhibited hypokalemia. CLA and CLA + FUR treatment resulted in drug‐induced LQTS and even an episode of TdP in one CLA + FUR rat. The combined treatment dysregulated gene expression of several ion channels subunits, including KCNQ1, calcium channels and Na+/K + ‐ATPase subunits, while both monotherapies had no impact. The rat with recorded TdP exhibited differences in the expression of ion channel genes compared to the rest of rats within the CLA + FUR group. The ECG changes were not detected in isolated perfused hearts. Hence, we report rapid orchestration of ion channel reprogramming of hearts with QT prolongation induced by simultaneous administration of clarithromycin and furosemide in rats, which may account for their ability to avoid arrhythmias triggered by beta‐adrenergic stimulation.
Environmental, social, governance: The future of process safety management or repeat of the past?
Authors: Hoff Rainer , Shell Kathy 
Published: September 2023

AbstractSites have implemented process safety management (PSM) systems, initially for Occupational Safety and Health Administration (OSHA) PSM and the Environmental Protection Agency (EPA) risk management program (RMP) compliance. Then later, they adapted those systems for risk‐based process safety (RBPS). They discovered the power of leveraging these foundational systems of procedures, tools, and practices for numerous follow‐on initiatives: for example, action management, API‐1173, SIS/IEC‐61511; cybersecurity/IEC 62443; API‐754/Vision 2020 metrics; ISO 14001. Today, companies are increasingly serious about environmental, social, governance (ESG) issues, and demonstrate progress by leveraging the S&P global corporate sustainability assessment (CSA). Interestingly, 63% of the CSA elements rely on information directly or indirectly produced by PSM systems. The existing PSM systems may require additional data collection, or additional lifecycles, in their business processes to satisfy the ESG/CSA requirements. Process safety professionals have a critically important role in supporting local and corporate ESG initiatives. ESG initiatives are indeed the “new game in town” to promote continuous improvement in process safety.
Booklice Liposcelis bostrychophila are efficiently attracted by the combination of 2,3,5,6‐tetramethylpyrazine and ultraviolet light
Authors: Tanaka Kohjiro , Ozawa Rika , Takabayashi Junji , Ochiai Masanori , Hayakawa Yoichi 
Published: September 2023

AbstractBACKGROUNDBooklice Liposcelis bostrychophila are frequently found almost everywhere, including private houses and cleanrooms of factories and institutes. They often cause serious hygienic as well as agricultural problems, but a useful trap has not been developed so far. Therefore, an effective way to monitor and capture booklice is required.RESULTSWe here identified a new attractant, 2,3,5,6‐tetramethylpyrazine (TMP), which efficiently captured booklice in combination with UV light. When booklice placed at both right and left edges of an assay tray were exposed to light stimulus from the center, test insects gathered at the center. The attraction was stronger with shorter wavelengths than longer ones: 365‐nm ultraviolet (UV) light showed the strongest attraction of four tested light wavelengths. We found that cocoa powder attracted booklice weakly but significantly under total darkness. Furthermore, the cocoa smell was confirmed to enhance the attraction to light at all tested wavelengths irrespective of the difference between two brands of cocoa powders. Gas chromatography–mass spectrometry indicated that both cocoa products contain TMP as a major odor compound. Exposure of booklice to TMP significantly enhanced the attraction to UV light: the combined use with TMP almost doubled the attraction compared to the light only. By contrast, TMP homologs, pyrazine and dimethylpyrazines, showed strong repellent activities under UV light exposure.CONCLUSIONTMP enhanced the UV light attraction for booklice while pyrazine and dimethylpyrazines diminished it. Use of these attractant and repellent pyrazine derivatives together with UV light would enable us to develop a practical new way to monitor and capture booklice. © 2023 Society of Chemical Industry.
Critical assessment of medical devices on reliability, replacement prioritization and maintenance strategy criterion: Case study of Malaysian hospitals
Authors: Amran Mohd Effendi , Aziz Sa'ardin Abdul , Muhtazaruddin Mohd Nabil , Masrom Maslin , Haron Habibah Norehan , Bani Nurul Aini , Mohd Izhar Mohd Azri , Usman Sahnius , Sarip Shamsul , Najamudin Siti Sara , Zamzam Aizat Hilmi , Ahmad Kamil Ahmad Safwan , Azilah Nurul Farhana , Muhammad‐Sukki Firdaus 
Published: September 2023

AbstractThe Biomedical Engineering Maintenance Services (BEMS) is a comprehensive maintenance program that ensures the safety and reliability of medical devices. Significant and crucial devices are identified and prioritized for best practice prior to the equipment life cycle to mitigate functional problems, alarmed by the Fourth Industrial Revolution (4IR) underlying the modernization agenda. A model of multi‐criteria decision‐making (MCDM) to prioritize medical devices according to their criticality is presented in this paper, with the utilization of quality function deployment (QFD) and fuzzy logic in the development of the model through a quantitative survey of experts from all regions in Malaysia. As a result, a customized version of the Asset Criticality Assessment (ACA) is developed and is recommended for use in more than 144 Ministry of Health (MOH) hospitals. Subsequently, real data of four selected devices are pulled from the Asset and Services Information System (ASIS) to demonstrate a relevant and comparable end‐result using the QFD and fuzzy logic. In essence, the key contribution of the customized ACA model is that it assesses a promising evaluation with a broader range on both the performance of medical devices and the appropriate asset replacement choices. This leads to an effective maintenance strategy for each device and the modernization of reliability computation metrics.
Event‐triggered control of power buffers in DC microgrids over an unreliable network
Authors: Qian Yangyang , Premakumar Abhiram V. P. , Wan Yan , Lin Zongli , Shamash Yacov A. , Davoudi Ali 
Published: September 2023

AbstractPower buffers can help improve the inertia in DC microgrids and supply the additional power demand during short load transients. This article investigates distributed event‐triggered control of power buffers over an unreliable network, subject to packet losses and transmission delays. For each power buffer, a distributed event‐triggered control law regulates the input impedance while altering its stored energy. Moreover, a dynamic event‐triggered communication mechanism determines the time sequence of control updates and data transmissions among power buffers. An appealing feature of this mechanism is a designable positive minimum inter‐event time despite packet losses and transmission delays. The closed‐loop system is shown to be exponentially stable. Controller/hardware‐in‐the‐loop studies validate the theoretical findings.
Learning to see, seeing to learn: Impacts of an online tool on volunteers' observational practices during aquatic macroinvertebrate identification
Authors: Louw Marti , Sanford‐Dolly Camellia W. 
Published: September 2023

AbstractScientific observation is a disciplinary‐informed way of looking at the world that requires the coordination of domain knowledge and perceptual skills with specialized tools and techniques to systematically identify objects, organisms, specimens, or phenomena of interest. Identification is a particular form of skilled observational practice where the observer recognizes key features for classification. Learning to see like a scientist is crucial for many citizen science activities, yet participants often have limited access to training and resources needed to practice. We posit that observational fluency development in taxonomic identification activities for citizen science has two components: (1) increased accuracy in noticing relevant features, and (2) use of more disciplinary‐based explanatory language; and self‐efficacy is crucial while developing these competencies. This study explores the extent to which an interactive visual identification platform supports learners' observational fluency development in the context of aquatic macroinvertebrate identification in environmental education. We examined changes in water quality monitoring volunteers' accuracy, self‐efficacy, and explanatory language use after participation in a training that integrated the online identification (ID) tool. Methods included surveys, focus groups, and an ID accuracy task before and after training. Our findings indicate that learners, especially novices, demonstrated increased self‐efficacy and accuracy in specimen identifications after participating in a training utilizing the online tool. They also shifted their ID justifications, incorporating more scientific terminology and salient diagnostic characters, and fewer generic descriptive adjectives. Results suggest that trainings using dynamic visual tools can positively impact observational fluency development and the quality of data contributed by volunteers.