bluuebunny/crossref_metadata_2025_split huggingface dataset:
Malignant hypercalcemia revealing a diffuse large B‐cell lymphoma in a patient with a previous diagnosis of chronic myelomonocytic leukemia: An uncommon hematological coexistence
Authors: Diallo Alpha Oumar , Marcou Amelie , Lespinasse Jérémie , Cordoba‐Sosa Zaida , Andrès Emmanuel , Docquier Léa , Lorenzo‐Villalba Noel 
Published: September 2023

Key Clinical MessageA 76‐year‐old patient previously admitted to the cardiology department for replacement of a right ventricular lead on a double‐chamber pacemaker was admitted to the internal medicine department 15 days after for bronchopneumopathy. His past medical history was relevant for Type 2 diabetes mellitus, heart failure due to dilated hypokinetic heart disease, transcatheter aortic valve implantation (TAVI), and chronic myelomonocytic leukemia (CMML‐0) diagnosed in 2021. Twenty‐four hours after admission, the patient's general condition deteriorated abruptly, with the onset of drowsiness and psychomotor retardation. Laboratory exams revealed hypercalcemia at 4.18 mmol/L. Intensive hydration, calcitonin, and zoledronic acid were initiated and the patient was transferred to the nephrology intensive care unit where he underwent two sessions of hemodialysis to normalize serum calcium levels before readmission to internal medicine. Laboratory exams revealed low parathyroid hormone, normal 1‐25‐OH vitamin D, and increased parathyroid hormone‐related peptide. Thoracoabdominal and positron emission tomography (PET) scan showed diffuse abdominopelvic peritoneal carcinosis associated with low‐grade pleural effusion and multiple supra‐ and sub‐diaphragmatic adenopathies, leading to a search for a solid tumor. The patient's clinical condition worsened leading to a transfer to the intensive care unit. The biopsy of a peritoneal carcinosis nodule confirmed the diagnosis of diffuse large B‐cell lymphoma. Specific treatments were unsuccessful and the patient expired.
The utility of H2 receptor antagonists in preventing infusion‐related reactions to paclitaxel chemotherapy
Authors: Tsang Corey , Robinson Jessica , Wheatley‐Price Paul F. , Brule Stephanie Y. , Moore Sara M. 
Published: September 2023

AbstractBackgroundPaclitaxel has a risk of infusion‐related reactions (IRRs) and despite no prospective evidence, is often given with premedication including a corticosteroid, H1 antagonist, and H2 antagonist (H2RA). Backorders impacted the supply of intravenous H2RAs at our center, and it was removed as routine premedication. The authors compared the incidence of IRR in patients treated without H2RA to patients receiving standard H2RA premedication.MethodsThe authors reviewed outpatients starting paclitaxel at the Ottawa Hospital from December 2019 to October 2021. Two cohorts were created: patients treated without H2RA premedication (intervention), and those receiving standard H2RA (control). Demographics, treatment, and IRR information were collected retrospectively. Primary end point was rate of grade ≥2 IRRs during first two doses of paclitaxel.ResultsA total of 182 patients were treated without H2RA premedication, compared to 184 control patients treated during non‐backorder periods. Baseline characteristics included: median age, 63 years; 86% female; and primary tumor 52% breast/24% gynecologic/10% gastric/esophageal/8% lung/6% other. There were no significant differences between cohorts in baseline characteristics. There was no difference in the rate of grade ≥2 IRR between cohorts; 12.1% (22 of 182; 95% confidence interval [CI], 7.7%–17.7%) for patients treated without H2RA, and 15.1% (28 of 185; 95% CI, 10.3%–21.1%) for control patients. The rate of grade ≥3 IRRs were also similar, 4.4% in intervention cohort versus 3.8% in control cohort.ConclusionsThe removal of H2RAs from premedication for paclitaxel did not result in an increased incidence of IRRs. The use of H2RAs in preventing IRRs to paclitaxel should be re‐evaluated.
Evincing Structural, Electronic, and Magnetic Attributes of LaFe0.5A0.5O3 (A = Co, Cr, and Ti): DFT‐GGA Recapitulation
Authors: Tariq Saad , Mubarak A. A. , Mahmood Asif , Ramay Shahid Mahmood 
Published: September 2023

AbstractIn this article, density functional theory studies are being performed on LaFe0.5A0.5O3 (A = Co, Cr, and Ti) (LFAO). The structural stability of LFAO is inspected using ground state optimization, and enthalpy of formation. The results unveil that LFAO is a ferromagnetic half metallic compound. The calculated magnetic moments, Curie temperature, and electronic band gap are found to change with substitution atoms. All these attributes are explained in detail using DOS and Fermi surface analysis. The results match well with the available literature. The Seebeck coefficient, electrical and thermal conductivity with respect to a time constant are computed using BoltzTrap code. The present dopant compounds show p‐type character with a hole charge carrier. It is expected that studied compounds can be useful for novel spintronic and thermoelectric applications.
Secure access of resources in software‐defined networks using dynamic access control list
Authors: Ramprasath J. , Seethalakshmi V. 
Published: September 2023

SummarySoftware‐defined networking (SDN) creates a platform to dynamically configure the networks for on‐demand services. SDN can easily control the data plane and the control plane by implementing the decoupling concept. SDN controller will regulate the traffic flow and creates the new flow label based on the packet dump received from the OpenFlow virtual switches. SDN governs both data information and control information toward the destination based on flow label, but it does not contain security measure to restrict the malicious traffic. The malicious denial‐of‐service (DoS) attack traffic is generated inside the SDN environment; it leads to the service unavailability. This paper is mainly focused on the detection of DoS attacks and also mitigates the malicious traffic by dynamically configuring the firewall. The SDN with dynamic access control list properties is emulated by mininet, and the experimental results exemplify the service unavailable gap between acceptance and rejection ratio of the packets.
Fork‐shaped frequency and pattern reconfigurable antenna
Authors: Thanki Poonam , Raval Falguni 
Published: September 2023

SummaryThis paper presents the fork‐shaped antenna that can reconfigure frequency and pattern. The size of the proposed antenna is 29 × 23 mm2. Four PIN diodes are used to reconfigure frequency and pattern of the proposed antenna. The proposed antenna operates at various frequencies, that is, 3, 3.1, 3.2, 3.72, 4.9, 5, 5.2 and 5.5 GHz, and has a pattern tilt from −170° to +170° in yz plane in various switching modes of PIN diodes. The proposed antenna is simulated in high‐frequency structure simulator (HFSS). In HFSS, lumped RLC elements are used to reconfigure pattern and frequency. PIN diodes are incorporated in fabricated prototype for switching to validate the simulated results. The proposed antenna shows a good matching in simulated and measured results.
Evolutionary optimization for pattern synthesis and reduction of mutual coupling of linear antenna arrays
Authors: Ram Gopi 
Published: September 2023

SummaryOptimal design of antenna arrays to minimize the mutual coupling effects in the geometrical arrangements of the linear antenna array (LAA) and circular antenna array (CAA) is dealt with in this work. Two different cases are considered to reduce the effect of LAA and CAA: Case‐1 in which the current excitations of the antenna array are considered to get the optimal radiation pattern of two geometry called LAA and CAA and Case‐2 in which inter‐element spacing and current excitations are both optimized for LAA geometry. A cost function that involves the mutual coupling factor as an optimization factor is developed to reduce the side lobe level (SLL), which takes mutual coupling effects into consideration. Excitation values and inter‐elemental spacing are optimized using particle swarm optimization (PSO). In LAA, for 8‐, 12‐, 16‐element arrays, SLLs are reduced by −15.52, −16.71, and −17.78 dB in Case‐1. For the same sets of element arrays, SLLs were reduced by −17.35, −19.71, and −20.26 dB in Case‐2. In CAA, the current excitations of the antenna array are optimized. For 8‐, 12‐, and 16‐ element arrays, SLLs are reduced to −7.405, −10.52, and −9.43 dB, respectively. The arrays coded with the help of MATLAB based computation and the results obtained by MATLAB are validated by using CST.
Multiband carrierless amplitude and phase index modulation
Authors: Puerta Rafael , Vesga Luis Felipe Ariza , Jaramillo‐Ramirez Daniel 
Published: September 2023

SummaryAs 5G standards continue to evolve, the need for communication systems with higher data rates is clear. However, the available bandwidth in the spectrum in most of the cases is limited and is not sufficient to satisfy future demands. Higher data rates drive the need for more efficient schemes to transmit information. Currently, there are different physical‐layer (PHY) technologies that enable increasing data rates with a limited bandwidth such as flexible multicarrier waveforms and channel coding schemes. Index modulation (IM), which uses alternative ways to transmit extra information compared to traditional communication systems, is an innovative PHY solution to increase capacity and spectral efficiency (SE). In this paper, a new IM scheme based on multicarrier quadrature amplitude modulation/carrierless amplitude phase (QAM/CAP) modulation is presented. The property used by this scheme is, provided a contiguous fixed bandwidth, the feasibility to transmit the same amount of data by transmitting different number of contiguous frequency bands by adjusting their bandwidths. To increase the SE, an extra degree of freedom is generated by dynamically changing the distribution of the frequency bands being transmitted, that is, the number of bands used and its bandwidths and subcarrier frequencies. Simulation results are presented to validate the feasibility of the proposed scheme.
Performance analysis of two‐way wireless‐powered Amplify‐and‐Forward relaying in the presence of co‐channel interference
Authors: Soleimani‐Nasab Ehsan , Javadi Sepideh 
Published: September 2023

SummaryIn this paper, we investigate the performance assessment of a bidirectional relaying system using energy harvesting techniques. We assume independent and nonidentically distributed (i.n.i.d.) Nakagami‐m fading channels where the amplify‐and‐forward relay is subject to co‐channel interference (CCI) due to transmissions of other transmitters. Two different scenarios, namely, scenario I and scenario II are evaluated. In scenario I, both end‐sources provide the required energy for the relay, whereas the relay also harvests energy from the co‐channel interferes. Then, in the first phase of cooperation, both end‐sources send the information to the relay, and after amplifying the received signal, relay transfers information to the appropriate destination in the second time‐slot. In the scenario II, both end‐sources harvest energy from the relay. After that, the information cooperative transmission is done similar to the first scenario. For both considered scenarios, tight closed‐form expressions of outage probability, symbol error probability, ergodic capacity, and throughput are obtained at arbitrary signal‐to‐noise‐ratios (SNRs). To get more insights, simplified high SNR results for both scenarios are also deduced where the diversity orders are obtained. Monte Carlo simulation results are presented to validate the correctness of our proposed analysis. Our results explicitly demonstrate that the first scenario has a better performance than the second one in the medium and high SNR region, whereas the second scenario outperforms the first one in the low SNR regime.
Terahertz indoor channel optimization and wedge fading characteristics analysis based on multisignal sources
Authors: Jing Qingfeng , Liang Yewen 
Published: September 2023

SummaryIndoor wireless communication systems are rapidly expanding, creating a growing demand for individual data rates. This paper explores the influence of the indoor source layout on the received signal for future ultrawideband indoor terahertz communication systems. The optimization of the number, distance, and arrangement of sources can improve the indoor signal coverage efficiency and reduce the fluctuation of the signal‐to‐noise ratio (SNR) of each position indoors. The optimization results for the number, distance, and arrangement of sources demonstrate that optimal coverage can be achieved using nine sources with a distance factor of 0.15 in a rectangular arrangement located in the center of the room in an office environment of 15 × 12 × 2.5 m (L × W × H) in size. Increasing the number of sources has little effect on the uniformity of the indoor signal power distribution. Under the optimal coverage, the SNR fluctuation in an empty room can be reduced from 10.77 to 2.5 dB, which guarantees that users can obtain nearly the same communication quality regardless of their location. Moreover, the impact characteristics of two typical wedges fading, namely, fixed shadow objects and moving human bodies, under one or multiple sources are also analyzed. Multisource distribution is found to significantly improve the shadow attenuation effect of wedge fading when there are fixed objects or people walking indoors. In addition, the moving human body attenuation model is extended by combining a Markov process with a ray‐tracing simulation. The results show that the probability of the ideal state under a multisource distribution is significantly higher than that under a single‐source distribution, and it is less influenced by the number of people.
A robust auto‐adaptive approach for serial acquisition of generalized multi‐carrier spread spectrum in multipath fading mobile channels
Authors: Jouini Abdelhafid , Maali Abdelmadjid , Benssalah Mustapha , Mesloub Ammar , Baudoin Genevieve , Hamadouche Mhamed 
Published: September 2023

SummaryIn this paper, a new robust auto‐adaptive approach for pseudo‐noise (PN) code acquisition is proposed. It is applied to the generalized multi‐carrier direct‐sequence code‐division multiple‐access (MC DS‐CDMA) systems communicating over frequency‐selective multipath Rayleigh fading channels. This new approach is based on the constant false alarm rate (CFAR) detection algorithm, referred here as automatic selection partial sum ordered statistics (ASPSOS)‐CFAR. The proposed approach does not require any prior information about the background environment and uses maximum likelihood estimation (MLE) method to detect the interfering signals group in the ranked cells for the full reference window. Once this group is identified and censored, the remaining smaller ranked cells are combined to form an estimate of the background noise level to compute the adaptive threshold. Through simulations, the performance of the proposed detector is analyzed and compared with traditional CFAR detectors based on fixed or automatic censoring algorithms. The obtained results show that the proposed detector eliminates the drawbacks of the previously related detectors and offers a robust detection performance to enhance the acquisition process in heterogeneous background environments.
Cooperative quadrature spatial modulation with Euclidean distance and capacity optimized antenna selection
Authors: Cogen Fatih , Aydin Erdogan 
Published: September 2023

SummaryIn this study, new cooperative‐quadrature spatial modulation techniques based on Euclidean distance and capacity optimized antenna selection techniques (EDAS‐CQSM and COAS‐CQSM) are proposed for cooperative communication systems. The considered cooperative system consists of three terminals that are the source terminal (ST), relay terminal (RT), and destination terminal (DT). The decode‐and‐forward (DF) cooperative technique is considered to retransmit the signal at the RT. In order to improve the performance of the conventional QSM demodulator in the RT and DT, both antenna selection techniques have been used in both the ST and RT to reduce performance degradation due to error propagation of the DF scheme. Therefore, the overall performance of the considered CQSM system has been increased. Furthermore, computer simulations have shown that the proposed EDAS/COAS‐CQSM systems have better the performances than the cooperative spatial modulation (CSM), CQSM, EDAS‐CSM, COAS‐CSM, and traditional DF‐based cooperative system with the same bit rate.
Multiple material domain‐based computational tools for ease assessment of modal parameter in photonic crystal fibers
Authors: Paul Dimpi , Biswas Rajib , Saikia Gunjan 
Published: September 2023

SummaryWe report here the development of two computational tools PCFPS (Photonic Crystal Fiber Parameter Study) and PCFPA (Photonic Crystal Fiber Parameter Analysis), equipped with graphical user interface (GUI) for modeling of photonic crystal fiber. The tools are based on different structural parameters, and they provide characteristic analysis of the modal parameters from the structural parameters. The main feature of PCFPS is that it enables the user to find out the values of each defining modal parameter that has an immense contribution towards the manufacture of photonic crystal fiber. Additionally, PCFPA allows the user to observe the variation in the modal parameters with respect to the changes in structural parameters (such as d, Λ, d/Λ, and λ/>Λ). Besides their ease of use, these two schemes have high computational precision and adaptability, giving a novel platform to optical engineers to modulate the microstructured fibers according to their requirement.
DACASN: Dynamic ant routing‐based channel accessing cognitive sensor network in Internet of Things
Authors: Arulanantham Dhandapani , Palanisamy Chenniappan 
Published: September 2023

SummaryThe Internet of Things (IoT) is a structure with sensors, base station, gateway, and network servers. Users can access the information contained in it and use it as they need. These sensors are embedded in several data collection locations in a uniform or random manner to collect data. The users in many parts of the world obtain such data that fit their requirements. For example, sensors are used in remote areas to monitor various areas such as forests, wildlife sanctuaries, fields, industrial needs, human condition, and changes in the ocean. The changes like these that take place in the open spaces require the selection of the best routing method and seamless delay reduction in data collection helps to immediately reach those involved in it. In the proposed protocol, dynamic ant routing‐based channel accessing cognitive sensor network (DACASN) in the IoT, cognitive sensors are used. It is made with the knowledge of choosing a channel for communication as well as selecting the parameters for path selection and setting the most accurate path with the channel knowledge and communicating with the internet server. The sensors set the paths for this route selection using the centrifugal method and the anticolonial method. As a result, it can be seen in the results and discussion section that the quality of the routing information is high because it is delivered to the destination in the shortest possible time.
Pollen carryover, pollinator movement, and spatial context impact the delivery of pollination services in apple orchards
Authors: Hung Keng‐Lou James , Fan Sophia L. , Strang Caroline G. , Park Mia G. , Thomson James D. 
Published: September 2023

AbstractAssessing the relative contributions of different pollinator taxa to pollination services is a central task in both basic eco‐evolutionary research and applied conservation and agriculture. To that end, many studies have quantified single‐visit pollen deposition and visitation frequency, which together determine a pollinator species' rate of conspecific pollen delivery. However, for plant species that require or benefit from outcrossing, pollination service quality further depends upon the ratio of outcross to self‐pollen deposited, which is determined by two additional pollinator traits: pollen carryover and movement patterns among genetically compatible plant individuals. Here, we compare the pollination capacities of managed honey bees, native bumble bees, and native mining bees in apple—a varietally self‐incompatible commercial crop—when pollen carryover and pollinator movement patterns are considered. We constructed simulation models of outcross pollen deposition parameterized using empirically measured single‐visit pollen deposition, visitation frequency, and probabilities of intertree movement exhibited by each pollinator type, as well as pollen carryover patterns simulated based on parameters reported in the literature. In these models, we also explicitly specified the spatial relationships among cross‐compatible trees based on field‐realistic orchard layout schemes. We found that estimated pollination service delivery was considerably reduced for all pollinator types when pollen carryover and pollinator movement patterns were considered, as compared to when only single‐visit pollen deposition and visitation frequency were considered. We also found that the performance of different pollinator types varied greatly across simulated orchard layout schemes and pollen carryover scenarios, including one instance where bumble and mining bees reversed their relative rankings. In all simulations, native bumble and mining bees outperformed managed honey bees in terms of both outcross pollen delivery per unit time and per flower visited, with disparities being greatest under scenarios of low pollen carryover. We demonstrate the degree to which pollination studies may reach inaccurate conclusions regarding pollination service delivery when pollen carryover and pollinator movement patterns are ignored. Our finding of the strong context dependence of pollination efficiency, even within a single plant–pollinator taxon pair, cautions that future studies in both basic and applied pollination biology should explicitly consider the ecological context in which pollination interactions take place.
Synthesis and investigation of structural, morphological and dielectric properties of Ba‐ordered BaTiO3 perovskite oxide
Authors: Maurya Ram Sundar , Yadav Vedika , Cheema Harshpreet , Sharma Minakshi , Alvi P. A. , Kumar Satyam , Sonkar Piyush Kumar , Kumar Upendra 
Published: September 2023

AbstractThe samples with A‐site cation ordering Ba1−x/2Ti1−xNbxO3 (BTN) with 0 ≤ x ≤ 0.010 were synthesized via the conventional ceramic route by calcining at 1200°C and sintered at 1350°C. The preliminary study of the phase of prepared samples was determined through X‐ray diffraction (XRD) analysis. The Rietveld refinement analysis indicates the tetragonal phase in BTN0 sample, whereas the doped samples exhibit a combination of tetragonal and cubic phases. Presence of Raman band at 308 cm−1 suggests the presence of tetragonal in all samples. The dielectric constant was observed to be 1500 (BTN0), 3000 (BTN5) and 1680 (BTN10) while tangent loss found 0.6 (BTN0), 0.04 (BTN5) and 0.07 (BTN10). All the sample shows same Curie temperature (120°C) due to Ba‐site cation ordering in the sample. Ferroelectric nature in all samples was also confirmed by modified Curie‐Weis law. Based on the current studies, the present materials can be explored as a potential candidate for ferroelectric‐memory devices, dielectric capacitor and energy harvesting applications.