bluuebunny/crossref_metadata_2025 huggingface dataset:
Cascaded parametric amplification based on spatiotemporal modulations
Authors: Yang Qianru , Hu Hao , Li Xiaofeng , Luo Yu
Published: October 2022

Active devices have drawn considerable attention owing to their powerful capabilities to manipulate electromagnetic waves. Fast and periodic modulation of material properties is one of the key obstacles to the practical implementation of active metamaterials and metasurfaces. In this study, to circumvent this limitation, we employ a cascaded phase-matching mechanism to amplify signals through spatiotemporal modulation of permittivity. Our results show that the energy of the amplified fundamental mode can be efficiently transferred to that of the high harmonic components if the spatiotemporal modulation travels at the same speed as the signals. This outstanding benefit enables a low-frequency pump to excite parametric amplification. The realization of cascaded parametric amplification is demonstrated by finite-difference time-domain (FDTD) simulations and analytical calculations based on the Bloch–Floquet theory. We find that the same lasing state can always be excited by an incidence at different harmonic frequencies. The spectral and temporal responses of the space-time modulated slab strongly depend on the modulation length, modulation strength, and modulation velocity. Furthermore, the cascaded parametric oscillators composed of a cavity formed by photonic crystals are presented. The lasing threshold is significantly reduced by the cavity resonance. Finally, the excitation of cascaded parametric amplification relying on the Si-waveguide platform is demonstrated. We believed that the proposed mechanism provides a promising opportunity for the practical implementation of intense amplification and coherent radiation based on active metamaterials.
Scalable fast benchmarking for individual quantum gates with local twirling
Authors: Zhang Yihong , Yu Wenjun , Zeng Pei , Liu Guoding , Ma Xiongfeng
Published: October 2022

With the development of controllable quantum systems, fast and practical characterization of multi-qubit gates has become essential for building high-fidelity quantum computing devices. The usual way to fulfill this requirement via randomized benchmarking demands complicated implementation of numerous multi-qubit twirling gates. How to efficiently and reliably estimate the fidelity of a quantum process remains an open problem. This work thus proposes a character-cycle benchmarking protocol and a character-average benchmarking protocol using only local twirling gates to estimate the process fidelity of an individual multi-qubit operation. Our protocols were able to characterize a large class of quantum gates including and beyond the Clifford group via the local gauge transformation, which forms a universal gate set for quantum computing. We demonstrated numerically our protocols for a non-Clifford gate—controlled-

(
T
X
)

and a Clifford gate—five-qubit quantum error-correcting encoding circuit. The numerical results show that our protocols can efficiently and reliably characterize the gate process fidelities. Compared with the cross-entropy benchmarking, the simulation results show that the character-average benchmarking achieves three orders of magnitude improvements in terms of sampling complexity.
Broadband silicon-based tunable metamaterial microfluidic sensor
Authors: Jing Xufeng , Qin Guihong , Zhang Peng
Published: October 2022

Tunable metamaterial absorbers play an important role in terahertz imaging and detection. We propose a multifunctional metamaterial absorber based on doped silicon. By introducing resonance and impedance matching into the absorber, a broadband absorption greater than 90% in the range of 0.8–10 THz is achieved. At the same time, the light regulation characteristics of the doped semiconductor are introduced into the absorber, and the precise amplitude control can be achieved in the range of 0.1–1.2 THz by changing the pump luminous flux. In addition, based on the principle of light-regulating the concentration of doped silicon carriers, the medium-doped silicon material is replaced by a highly doped silicon material, and a sensor with a sensitivity of up to 500 GHz/RIU is realized by combining the wave absorber with the microfluidic control. Finally, the broadband absorption characteristics and sensing performance of alcohol and water on the prepared device are verified by experiments, indicating that the absorber may have great potential in the field of sensor detection.
Dual role of an essential HtrA2/Omi protease in the human malaria parasite: Maintenance of mitochondrial homeostasis and induction of apoptosis-like cell death under cellular stress
Authors: Singh Shweta , Datta Gaurav , Jain Shaifali , Thakur Vandana , Arora Priya , Muneer Azhar , Asad Mohd , Ali Shakir , Mohmmed Asif
Published: October 2022

Members of the HtrA family of serine proteases are known to play roles in mitochondrial homeostasis as well as in programmed cell death. Mitochondrial homeostasis and metabolism are crucial for the survival and propagation of the malaria parasite within the host. Here we have functionally characterized a Plasmodium falciparum HtrA2 (PfHtrA2) protein, which harbours trypsin-like protease activity that can be inhibited by its specific inhibitor, ucf-101. A transgenic parasite line was generated, using the HA-glmS C-terminal tagging approach, for localization as well as for inducible knock-down of PfHtrA2. The PfHtrA2 was localized in the parasite mitochondrion during the asexual life cycle. Genetic ablation of PfHtrA2 caused significant parasite growth inhibition, decreased replication of mtDNA, increased mitochondrial ROS production, caused mitochondrial fission/fragmentation, and hindered parasite development. However, the ucf-101 treatment did not affect the parasite growth, suggesting the non-protease/chaperone role of PfHtrA2 in the parasite. Under cellular stress conditions, inhibition of PfHtrA2 by ucf-101 reduced activation of the caspase-like protease as well as parasite cell death, suggesting the involvement of protease activity of PfHtrA2 in apoptosis-like cell death in the parasite. Under these cellular stress conditions, the PfHtrA2 gets processed but remains localized in the mitochondrion, suggesting that it acts within the mitochondrion by cleaving intra-mitochondrial substrate(s). This was further supported by trans-expression of PfHtrA2 protease domain in the parasite cytosol, which was unable to induce any cell death in the parasite. Overall, we show the specific roles of PfHtrA2 in maintaining mitochondrial homeostasis as well as in regulating stress-induced cell death.
‘Show gay people for the often-awful people they are’: Reframing queer monstrosity
Authors: Brassington Thomas
Published: October 2022

Monsters have an established presence on screen as a cipher for queer identities. However, such presentations are often limiting, with queer monsters being either irredeemably evil or eliciting viewer sympathies for their helpless monstrous condition. Both forms of queer monster are highly queerphobic, but the issue this article takes with this representational binary is that it stifles the depictions of monstrous queer characters. To offer a counterpoint, I draw attention to BBC America’s Killing Eve (2018–22) and its queer monster Villanelle (Jodie Comer). I argue that Villanelle presents a new vision of the queer monster, where queerness and monstrosity are not interlocked parts of her characterization – a disconnect that allows her to be a more compelling monster and express her queerness in a plethora of ways. In this article, I focus on two ways in which Villanelle’s queerness manifests in the show: her fashion and style; and her sense of humour. I demonstrate that Villanelle’s queer humour and style provide her with a means to be a more dangerous and effective assassin, whilst also facilitating a means for expressing her queerness in complex ways. Her style, for example, enables her to dip in and out of both butch and femme aesthetics as she pleases and her humour provides a means to disarm her targets. In all, this article points towards Villanelle’s mercurial character as a positive form of queer representation, for her constant flitting creates a queer character who can be awful and provides a means for queerness to be displayed through multiple, yet legible, ambiguities.
Présentation
Authors: Costa João Paulo , Umbelino Luís António
Published: October 2022

Ce dossier thématique, consacré au passage du philosophe Emmanuel Falque par l’Université de Coimbra, à la Faculté des Lettres, dans le cadre de la Journée Internationale d’études philosophiques, intitulée «L’im‑pensable: Aux confins de la phénoménalité», qui a eu lieu le 26 mai 2022, donne encore une fois la parole au philosophe lui‑même, avec des articles et un entretien inédit, en présentant aussi un ensemble d’articles qui font écho à son projet philosophique.
A tempest in a skull
Authors: Falque Emmanuel
Published: October 2022

“A Tempest in a Skull”. The expression comes from Victor Hugo's Les Miserables, but it says just as much about Freud's life as it does about ours. No one is probably more 'disturbed', or descends to the depths of chaos, than when he or she takes on the trappings of a 'tidy' being, or is caught up in a cosmetic life apparently made of order and beauty.

Of course, “everything is fine” does not always hide “everything is bad”. But we must also recognize that there is often a 'tempest' in a skull, and that it is precisely at this moment that everything changes, and everything is modified within us. Based on this phenomenon, the leitmotiv "so much exception, so much modification" thus becomes the new imperative of phenomenology - not out of attachment to the tragic or the pathetic, but on the contrary to reach that part of us which is inexpressible and which is the strongest part of our existentiality. Garcia Lorca's Duende, as the “spirit of aching Spain”, will express in its own way this force “that burns the blood”, the only one capable of touching our own depths, magnified and exorcised by the rhythm of Andalusian singers.
Methodological and mechanistic context for the interpretation of leaf-level spectral chlorophyll-a fluorescence
Authors: Rajewicz Paulina A.
Published: October 2022

Boreal forests assimilate a substantial fraction of global atmospheric CO2 and thus play a key role in the global carbon cycle. However, due to the prevalence of evergreen species, monitoring photosynthetic dynamics of boreal forests is challenging when using conventional greenness- or vegetation-indices. Fortunately, an increasing body of evidence suggests that chlorophyll-a fluorescence (ChlF) – a weak red-to-far-red radiation emitted by the chlorophyll a molecules nanoseconds after light absorption – can enhance our capacity to assess photosynthetic dynamics in evergreen-dominated ecosystems. However, before extracting complete information embedded in the ChlF, comprehensive understanding and quantitative characterization of the mechanisms that connect the measured ChlF to photosynthesis across various scales are essential. In this thesis, I discuss several challenges that we currently need to face to leverage the full potential of ChlF. I present a roadmap through these challenges, towards a more comprehensive interpretation of ChlF. The main focus is laid on the challenges concerning ChlF measured at a leaf-level in methodological and mechanistic contexts. In other words, this thesis contributes to the interpretation of ChlF by contextualizing the influence that methodological and mechanistic factors have on leaf-level spectral ChlF. An impact of methodological factors, measuring geometry and sample arrangements, on spectral ChlF was analysed. Results indicate that ChlF shape is less dependent on measuring geometry as compared to ChlF magnitude and that if needle-mats are used, measuring geometry does not lower the comparability between studies using different setups. Mechanical factors were investigated in terms of their effect on spatial and temporal variation in spectral ChlF. The diversity of species and light environments within an ecosystem was shown to generate a temporarily-invariant, baseline variation in leaf spectral ChlF, as well as contrasting seasonal photosynthetic acclimation patterns. Consequently, I suggest the need for considering both the methodological and mechanistic contexts in the interpretation of ChlF.
PRACTICING THE DOCTRINE OF UNFAIR CONTRACTUAL CLAUSES
Authors: Pronina N.A. , Buyanov A.V.
Published: October 2022

The article is devoted to the problem of the practical significance of correct contractual work. Since thecivil turnover functions at the expense of contracts, to the extent that correct contractual work will avoidnumerous risks for organizations, as well as various costs and losses, as the consequences of poor-qualitycontractual work. The analysis of judicial practice made it possible to identify the circumstances includedin the subject of evidence in disputes about unequal contractual conditions. Using the modeling method,the work provides examples of hypothetical contractual conditions that are most effective for the situationsunder study. As a conclusion, some ways of negotiating and formulating contractual terms were identified.
Mathematical Modeling and Optimization of Low Energy Beam Line in 2MV Pelletron Accelerator
Authors: Farhat Mahnoor
Published: October 2022

The 2 MV 6SDH-2 tandem pelletron accelerator installed at CASP, GC University Lahore has evolved over the past years from acceptance tests to an extremely reliable and convenient research tool in the field of particle accelerator physics, hav-ing capability of providing variety of ion beams from few keV to several MeV in energy. Many electrostatic and magnetic devices are employed to steer an ion beam in an accelerator system all the way from ion source to experimental setup. Mathematical modeling and optimization of low energy beamline has been done for this accelerator. Several ion optics and steering devices are provided in the pre-acceleration beamline for ion beam manipulation and in order to optimize the overall beam transmission. As the quality of the beam from the accelerator depends upon the design of these electrostatic and magnetic devices, optimum settings are derived by manually adjusting voltages and currents provided to low energy beam-line components. From these calibrations and optimization measurements, calculations has been done for mass analysis magnets, steering and focusing components and the results has been represented. From the results, it has been found that there exists a complex relationship between the effects of different voltages and currents in order to tune the desired output current and beam profile at the end-stations. Details of experiments and data analysis are presented.
A Reappraisal of the Diagnostic Performance of B-Mode Ultrasonography for Mild Liver Steatosis
Authors: Lee Chul-min , Yoon Eileen L. , Nakajima Atsushi , Yoneda Masato , Toyoda Hidenori , Yasuda Satoshi , Lee Jonghyun , Kim Mimi , Kang Bo-Kyeong , Nguyen Mindie H. , Jun Dae Won , Sumida Yoshio
Published: October 2022

INTRODUCTION:

Previous studies have shown that ultrasonography has high specificity (80%–100%) but low sensitivity (50%–70%) in diagnosing fatty liver; sensitivity is especially low for mild steatosis. In this study, we aimed to reappraise the diagnostic performance of B-mode ultrasonography (B-USG) for fatty liver disease.

METHODS:

We performed a retrospective, multinational, multicenter, cross-sectional, observational study (6 referral centers from 3 nations). We included 5,056 participants who underwent both B-USG and magnetic resonance proton density fat fraction (MRI-PDFF) within a 6-month period. The diagnostic performance of B-USG was compared with that of MRI-PDFF as a reference standard for fatty liver diagnosis, using sensitivity, specificity, positive and negative predictive values, diagnostic accuracy, and area under the receiver operating characteristic curve (AUC).

RESULTS:

B-USG showed a sensitivity of 83.4%, specificity of 81.0%, and AUC of 0.822 in diagnosing mild liver steatosis (6.5% ≤MRI-PDFF ≤14%). The sensitivity, specificity, and AUC in diagnosing the presence of fatty liver disease (MRI-PDFF ≥6.5%) were 83.4%, 81.0%, and 0.822, respectively. The mean PDFF of B-USG–diagnosed nonfatty liver differed significantly from that of diagnosed mild liver steatosis (3.5% ± 2.8% vs 8.5% ± 5.0%, P < 0.001). The interinstitutional variability of B-USG in diagnosing fatty liver was similar in diagnostic accuracy among the 6 centers (range, 82.8%–88.6%, P = 0.416).

DISCUSSION:

B-USG was an effective, objective method to detect mild liver steatosis using MRI-PDFF as comparison, regardless of the etiologies and comorbidities.
Dificultades de las personas mayores para desarrollar envejecimiento saludable durante la pandemia por coronavirus
Authors: Silva Jiménez Diego , Lizondo Valencia Romina , Méndez-Celis Paula , Arancibia Morales Diego , Silva Silva Javier
Published: October 2022

El envejecimiento saludable consiste en el fomento y mantención de una buena nutrición, actividad física, salud mental e integración social, sin embargo, el confinamiento asociado a la pandemia pudo obstaculizar estos procesos. Objetivo: conocer cuáles fueron las principales dificultades de las personas mayores para desarrollar envejecimiento saludable durante la pandemia por coronavirus. Método: revisión narrativa sobre el tema considerando las siguientes variables: estereotipos, salud mental, salud física y social de la persona mayor. Resultados: la pandemia, medido a través de las variables estudiadas, impactó sobre el desarrollo del envejecimiento saludable, provocando aislamiento social y perdida de la actividad física debido a las cuarentenas. Conclusión: la pandemia ha significado un desafío para el envejecimiento saludable de las personas mayores, que debemos prontamente ser capaces de superar, aunando esfuerzos para disminuir los estigmas del grupo etario, que generaron un aislamiento forzado y mayor vulnerabilidad.
Caminos fenomenológicos de acceso al sufrimiento
Authors: Ruiz Aragoneses Rosa , López Mateo María de las Mercedes
Published: October 2022

El presente estudio tiene por objeto comprobar si la narratividad y el método hermenéutico-fenomenológico son una vía de acceso al conocimiento de la experiencia ajena del sufrimiento. Para ello, se empleará como caso concreto de estudio el Centro de Humanización de la Salud San Camilo en Madrid (de aquí en adelante CEHS) a través de cinco entrevistas semidirigidas a un grupo de residentes y su posterior análisis descriptivo. En consecuencia, la pregunta de hipótesis a la que queremos responder es la siguiente: ¿podemos acceder a la esfera privada del sufrimiento del otro a través de su narratividad? Los resultados muestran que la escucha y el despliegue de la narratividad no solo sirven para aproximarnos más al sufrimiento ajeno, sino que existe ya en esta puesta en común una experiencia de sanación para nuestros mayores.
La contribución de la teología de los sentidos en la estimativa del cuidado del final de la vida en sociedades espiritualmente plurales
Authors: Noriega Roberto
Published: October 2022

La persona que se enfrenta con el final de su vida tiene necesidades varias que deben ser satisfechas para un adecuado cuidado integral, que incluye la atención y el acompañamiento espiritual.

La evolución hacia sociedades espiritualmente plurales y las novedosas posibilidades existentes reclaman una actualización de la sensibilidad del acompañante respecto a la persona doliente que atiende.

La teología de los sentidos permite captar mejor la realidad del individuo enfermo y es una ayuda que puede ser incorporada en instrumentos que mejoren los estándares de evaluación cualitativa de la atención familiar o residencial.
Comprehensive Literacy Instruction within Classroom Contexts: Teachers’ Perceptions of Best Practices for Literacy
Authors: Manak Jennifer , Bahlmann Bollinger Chelsey , Shimek Courtney , Barrett-Tatum Jennifer , Wellman Debra
Published: October 2022

This study illuminates the voices of literacy teachers. Findings from this study were based on a questionnaire about what teachers perceive as best practices in literacy instruction. We received 44 fully completed questionnaires. The 44 teacher respondents ranged from Pre-K through 6th grade with experience ranging from 1 to 20+ years of teaching. Teachers came from rural, suburban, and urban schools, with 40% of these teachers in Title I schools. More than 130 best practices in literacy instruction were identified by our teacher participants. Teachers’ responses illustrated many of the components of comprehensive literacy instruction that covered a broad array of practices from the initiation of instruction through the assessment of student learning. Literacy teachers’ responses were organized into three themes: Preparing for Instruction, Literacy Instruction, and Student Assessment and Differentiation.
The Impact of Digital Transactions on Employees' Performance at University of Hail
Authors: Alshammari Hammad , Alturifi Mohammad
Published: October 2022

This study aims at investigating the impact digital transactions on employees’ performance at the university of Hail in Saudi Arabia. The main purpose of the study is to investigate the impact of adoption a digitalized work system by administrators at University of Hail in increasing employees' performance. Descriptive analytical approach was implemented using survey questionnaire. The sample of the study consisted of (200) male and female administrators selected using simple random sampling procedure. The result showed that there is a significant correlation between the implementation degree of digital transactions at University of Hail and employees' performance. In light of the results, the following recommendations
were suggested:-University of Hail needs to take more consideration to capitalizing the advantages of using digital transactions as one of the major variables having a positive impact on employees' performance.-Keeping abreast with new technological advances in digital transaction is a must if higher education institutions wish to be well informed about the changes worldwide.-Engaging employees in the implementation of digital transactions in the various deanships, administrations and departments at University of Hail ensures a full adoption of such a modern technology, which will, in turn, have a positive impact on employees' performance.
The Influence of Entrepreneurial Ecosystem on SMEs Industry in Malaysia
Authors: Aziz Zarith Delaila Abd , Hussein Norashikin , Rahman Nor Azian Abdul
Published: October 2022

The rise of Small Medium Enterprise (SMEs) businesses leads to the dynamic and competitive environment. To excel in the market, companies have spent a substantial amount of money, time and resources by designing right strategies to sustain. However, this SMEs businesses faces few challenges such as small capital investment, short of talent, limited access to infrastructure and support mechanism. Despite the government’s several institutional and policy support for enhancing the capacity of this Small Medium scale enterprises, the results have fallen short of expectations. Given the increased demand for Small Medium Enterprise’s products, creating a viable entrepreneurial ecosystem model for SMEs in Malaysia is critical. This is because the entrepreneurial ecosystem is a system of interrelated components that influence the speed and ability with which entrepreneurs, particularly SMEs can create and scale new ventures in a sustainable manner. As a result, this study seeks (1) to analyse the demographic profile of Malaysian small and medium enterprise and (2), determine the extent at which entrepreneurial ecosystem affect the Small Medium Enterprise in Malaysia. This study is important to investors, the ministry, the government, academics and even business owners because it provides a comprehensive model for understanding the SMEs entrepreneurial processes and how ecosystems emerge, change and influence entrepreneurship activities.
Wpływy europejskie na drodze do odrodzenia narodowego Turków
Authors: Skowron Emilia
Published: October 2022

The Turkish Republic, unlike the Ottoman Empire, became a state of one nation, the Turks. The process of changes, the aim of which was to preserve the country’s sovereignty was aiming for the modernization and Europeanization of the country. The weakened Ottoman state required restoration, so the need for changes was noticed very early, using the achievements of Europeans. During the transformation of the state, reforms of Mustafa Kemal Atatürk turned out to be crucial, as he fully achieved what in previous centuries was only in the phase of deliberation or partial implementation. The article analyzes the process of changes that took place from the crisis of the Ottoman Empire to the first years of the Turkish Republic, focusing mainly on the reforms implemented by Atatürk. For the whole picture of changes, it is important to recall the ideas and trends that inspired him to undertake such actions.
Pochodzenie Słowian w świetle analiz genetycznych i genomicznych. podstawowe informacje o metodach i przegląd dotychczasowych wyników badań – z punktu widzenia archeologa
Authors: Jędrzejewska Sylwia
Published: October 2022

Bearing in mind the interdisciplinary nature of the origin of Slavs, in the process of reviewing the issue in relation with archaeology, the debate and the results of research carried out by representatives of other areas of science must be taken into consideration. The goal of this article is a review of the published results of an analysis of fossil and contemporary genetic material, coupled with discussing interpretation thereof in relation with the issue at hand. The work presents a selection of surveys which, according to the author, provide representatives of humanities with insight into the latest state of research. The presentation is preceded by introductory information about the examined material and the analysis methods as well as the conditioning factors. A methodological challenge was faced in the form of connecting data provided by geneticists and the findings from other disciplines, including archaeology, as indicated in the final part of the article.
Heme delivery to heme oxygenase-2 involves glyceraldehyde-3-phosphate dehydrogenase
Authors: Dai Yue , Fleischhacker Angela S. , Liu Liu , Fayad Sara , Gunawan Amanda L. , Stuehr Dennis J. , Ragsdale Stephen W.
Published: October 2022

Heme regulatory motifs (HRMs) are found in a variety of proteins with diverse biological functions. In heme oxygenase-2 (HO2), heme binds to the HRMs and is readily transferred to the catalytic site in the core of the protein. To further define this heme transfer mechanism, we evaluated the ability of GAPDH, a known heme chaperone, to transfer heme to the HRMs and/or the catalytic core of HO2. Our results indicate GAPDH and HO2 form a complex in vitro. We have followed heme insertion at both sites by fluorescence quenching in HEK293 cells with HO2 reporter constructs. Upon mutation of residues essential for heme binding at each site in our reporter construct, we found that HO2 binds heme at the core and the HRMs in live cells and that heme delivery to HO2 is dependent on the presence of GAPDH that is competent for heme binding. In sum, GAPDH is involved in heme delivery to HO2 but, surprisingly, not to a specific site on HO2. Our results thus emphasize the importance of heme binding to both the core and the HRMs and the interplay of HO2 with the heme pool via GAPDH to maintain cellular heme homeostasis.
A rank correlation based translation model for simulating wind speed time series
Authors: Wang Chenwei , Xiao Qing
Published: October 2022

The translation model is a useful tool for simulating non-Gaussian wind speed time series, it employs marginal transformation to fit the distribution function of wind speed, and deploys a Gaussian process with a specified autocorrelation function (ACF)

ρ
Z

(
τ
)

${\rho }_{Z}\left(\tau \right)$

to match the ACF of wind speed. However, determining

ρ
Z

(
τ
)

${\rho }_{Z}\left(\tau \right)$

requires solving an integral equation, which is not computationally convenient. In this paper, an easy-to-use method is presented for determining

ρ
Z

(
τ
)

${\rho }_{Z}\left(\tau \right)$

. Based on Spearman’s rank correlation coefficient, a rank ACF is proposed to characterize the time-dependent behavior of wind speed time series, whereby

ρ
Z

(
τ
)

${\rho }_{Z}\left(\tau \right)$

can be specified by an analytical formula. In the case that only discrete values of

ρ
Z

(
τ
)

${\rho }_{Z}\left(\tau \right)$

are available, a Laguerre polynomial based model is developed to fit

ρ
Z

(
τ
)

${\rho }_{Z}\left(\tau \right)$

. Furthermore, if the distribution function of wind data is unknown, the kappa distribution is introduced to fit the quantile function of wind speed. Finally, a case study is conducted to check the proposed method, the results indicate that the rank correlation based translation model can yield a satisfactory representation for statistical features of wind speed time series.
Performance investigation of various modulation techniques in coherent optical orthogonal frequency division multiplexing (CO-OFDM) system
Authors: Sachdeva Shippu , Sindhwani Manoj
Published: October 2022

One of the essential aspects of life is communication and in all communication systems, modulation and demodulation perform a crucial role in the transmission of transmitter-to-receiver data. Using various multiplexing techniques such as FDMA, CDMA and TDMA to work with the communication system, faced various problems such as low bit rate, multi-path fading, ISI and time dispersion. The incorporation of the OFDM approach gives an attractive solution to the aforementioned issues. OFDM transmitters and OFDM receivers with different modulation techniques are included in the OFDM-based different communication system. CO-OFDM was recently suggested and its extreme robustness against polarisation mode dispersion and chromatic dispersion was demonstrated in proof-of-concept transmission experiments. Optical fiber-based wired networks and also free space wireless networks require a premier technique for multiplexing i.e. CO-OFDM. In this paper, we investigated the performance of various modulation techniques which highlights several benefits such as channel robustness and greater efficiency of the available spectrum where multicarrier is used as high data rate bit streams from a single source are divided into the number of small subcarriers. OFDM is commonly regarded as discrete multitone (DMT) in this case. So in this review article, OFDM systems are also incorporated with their advantages and applications.
Interventions for reducing late-onset sepsis in neonates: an umbrella review
Authors: Razak Abdul , Alhaidari Omar Ibrahim , Ahmed Javed
Published: October 2022

Objectives

Neonatal sepsis is one of the leading causes of neonatal deaths in neonatal intensive care units. Hence, it is essential to review the evidence from systematic reviews on interventions for reducing late-onset sepsis (LOS) in neonates.

Methods

PubMed and the Cochrane Central were searched from inception through August 2020 without any language restriction. Cochrane reviews of randomized clinical trials (RCTs) assessing any intervention in the neonatal period and including one or more RCTs reporting LOS. Two authors independently performed screening, data extraction, assessed the quality of evidence using Cochrane Grading of Recommendations Assessment, Development and Evaluation, and assessed the quality of reviews using a measurement tool to assess of multiple systematic reviews 2 tool.

Results

A total of 101 high-quality Cochrane reviews involving 612 RCTs and 193,713 neonates, evaluating 141 interventions were included. High-quality evidence showed a reduction in any or culture-proven LOS using antibiotic lock therapy for neonates with central venous catheters (CVC). Moderate-quality evidence showed a decrease in any LOS with antibiotic prophylaxis or vancomycin prophylaxis for neonates with CVC, chlorhexidine for skin or cord care, and kangaroo care for low birth weight babies. Similarly, moderate-quality evidence showed reduced culture-proven LOS with intravenous immunoglobulin prophylaxis for preterm infants and probiotic supplementation for very low birth weight (VLBW) infants. Lastly, moderate-quality evidence showed a reduction in fungal LOS with the use of systemic antifungal prophylaxis in VLBW infants.

Conclusions

The overview summarizes the evidence from the Cochrane reviews assessing interventions for reducing LOS in neonates, and can be utilized by clinicians, researchers, policymakers, and consumers for decision-making and translating evidence into clinical practice.
Some estimates for commutators of bilinear pseudo-differential operators
Authors: Yang Yanqi , Tao Shuangping
Published: October 2022

We obtain a class of commutators of bilinear pseudo-differential operators on products of Hardy spaces by applying the accurate estimates of the Hörmander class. And we also prove another version of these types of commutators on Herz-type spaces.
Landscape ecological modeling to identify ecologically significant regions in Tumkur district, Karnataka
Authors: Ramachandra T. V. , Setturu Bharath , Bhatta Vinayaka
Published: October 2022

Temporal land use and land cover (LULC) information of a landscape provide an overview of the drivers of change, and impacts on the socio-ecological system. This necessitates organizing diverse data of a landscape, which provides insights into sustainable management. Spatial heterogeneity with landscape dynamics influences biotic and abiotic processes. The knowledge of LULC dynamics aids in assessing the feedback between socio-ecological systems across the urban and rural environments. Visualizing likely landscape changes through modeling help in the decision-making for sustainable landscape management. The current chapter accounts for changes in LULC patterns of the agrarian district Tumkur in Karnataka State, considering temporal remote sensing data of three decades, using geospatial techniques and modeling. Land use (LU) analyses indicate an increase in horticulture area from 0.94 (1989) to 1.02% (2019) due to an increase in commercial cropping. An upsurge of built-up cover from 0.02 to 2.11% (1989–2019) with the enhanced socio-economic activities with the industrialization and infrastructure development across the Tumkur to Bangalore highway. Spatial patterns of landscape dynamics
assessed through spatial matrices highlight of increase in urbanization with land conversion from agriculture and forest cover in the outskirts of the Tumkur city center. Ecologically significant regions (ESR) were identified at disaggregated levels through aggregate metrics incorporating bio-geo-climatic, social, hydrological, and ecological aspects. The study region is divided into 9 × 9 km grids for computing metrics at disaggregated levels. ESR is delineated based on the composite metric of all variables, depicts 17 grids (11%) under ESR 1, indicating the highest sensitivity, 29% area (46 grids) as ESR 2 (higher sensitivity), 45% (70 grids) as ESR 3 (high sensitivity), and the rest is 15% (24 grids) in ESR 4 (moderate sensitivity). The outcome of the current research would provide critical management approaches required for managing natural resources and will be valuable for policy and planning purposes in pursuing Sustainable Development Goals (SDGs) at the regional scale.
“The Angel of the Topos Shall Bless You”: Preliminary Report on the Cult of the Altar-Angels in Late Antique Egypt
Authors: Krueger Frederic
Published: October 2022

This article presents a first look at some of the key sources and hypotheses of ongoing research on a significant yet ill-studied figure in late antique Egyptian-Christian piety: The “Angel of the Altar,” or “of the Topos,” and later “of the Sacrifice” as he is still invoked in the Coptic liturgy today. Since the 4th century, church canons and literary works aiming to instill fear of the altar in monks and clerics warn of the angel guarding it, who can only be seen by monastic and clerical leaders in visions which become a common feature of post-Chalcedonian Coptic homiletics. This angel figure is identified with God’s destructive power defending the ark/altar/temple in the Old Testament. The “Angel of the Altar” also has the crucial liturgical function of lifting the Eucharistic offering to God. He is even considered the true dispenser or withholder of the Eucharist, overshadowing and potentially nullifying the actions of the priest. Originally an impersonal figure, he is sometimes identified with the specific archangel assigned to the church in question, such as Michael or Raphael. In a further step, it seems that some monastic communities who built their corporate identities on the fame of their respective patron saint began to identify the latter with the “Angel of the Altar,” appropriating the concept for the cult of saints. Documentary papyri show how monastic leaders invoked the Angel as superhuman punisher and blesser in the economic interest of the monastery. It is probably in this context that the variant “Angel of the Topos” emerged, amounting to what seems to be the only technical term for “patron saint of a place” in Coptic.
The Shabti of the Lady of the House Iahhetep and the Emergence of Female Shabtis in the New Kingdom
Authors: Glanzmann Rahel
Published: October 2022

This paper is divided into two main sections. The first section represents the publication of a shabti preserved in the Musée du Louvre in Paris (Inv. No. E 3088). This shabti belonged to a Lady of the House named Iahhetep. It dates to the 18th Dynasty under Pharaoh Thutmosis III. It is notable because it is one of the first known shabtis to exhibit female features in its outer appearance: the Hathor wig. The second section of this paper deals with female shabtis in general. It illustrates their iconographic variety and outlines their role as transitional figurines within the movement from mummiform shabtis towards the production of shabtis in the dress of daily life. Furthermore, female shabtis may have served as a vehicle of the owner’s self-presentation and may thus be regarded as a manifestation of the self-confidence and self-awareness of elite women of the period.
La tablette comptable British Museum EA 29558
Authors: Dautais Louis , Gabolde Marc , Birin Kévin
Published: October 2022

This article contains the edition and preliminary discussion of the writing-tablet EA 29558 kept at the British Museum. The document, written in hieratic, comes from the Hay collection and was purchased by the Museum in 1868. A followed translation is offered as well as a dating (mid-18th dynasty). This accounting document shows a circuit of production and distribution of the srm.t-beverage, most probably within the Theban region.
The Cost of Winning the Pregnancy Lottery
Authors: Meyer Michaela D.E.
Published: October 2022

In this essay, I narrate my experience with secondary infertility through autoethnography. Nearly three million women in the United States struggle with secondary infertility, defined as the inability to become pregnant and/or carry a child to term after the successful birth of a first child. Through a layered autoethnographic account, I illustrate the simultaneously embodied and disembodied experiences of my journey with secondary infertility utilizing Cloud’s concept of the “null persona.”1 By stressing common experiences on this path—painfully slow lag times toward diagnosis, increased psychological distress, demanding and rigorous physical treatments, and the exorbitant costs associated with assisted reproductive technologies—my work contributes to academic conversations about both infertility and the value of autoethnographic methods to chronicle and critique “past experience to make better, hopeful experiences possible.”2
Embroidery in Abya Yala
Authors: Dillon Lorna
Published: October 2022

In these Dialogues, Lorna Dillon brings together essays that explore the relationship between fiber art and social justice in Latin America. The authors discuss Chilean arpilleras, needlework projects and the struggle for peace in Colombia, the Mexican Embroidering for Peace Movement, and Margarita Cabrera’s fabric sculptures about the US-Mexico borderlands. The section brings the work of scholars from different regions into dialogue. Beatriz Elena Arias López, Berit Bliesemann de Guevara, and Berena Torres Marín reflect on textile initiatives undertaken by peace signatories of the former guerrilla group FARC. Mathilda Shepard analyzes the work of the Tejedoras de Mampuján, asking what it means to speak of justice, reparations, and reconciliation in the wake of the plantation. Danielle House reflects on Mexican embroidery. She considers violence in Mexico and the way the victims it consumes have been framed as “ungrievable.” Mónica Salazar discusses symbolic resistance in participatory needlework projects about the US-Mexico border. Dillon writes about Chilean arpilleras and Colombian testimonial textiles. She draws parallels among the different artistic practices discussed in the collected essays, tracing the emergence of a supranational artistic movement that generates meaning through a multiplicity of practices. The Dialogues demonstrate the new signifying processes that these needlework groups use, as well as the way they articulate meanings that extend beyond the stitches and semiotics of their clothwork.
Introduction to the Dialogues on Repairing the Fabric of Society through Needlework
Authors: Dillon Lorna
Published: October 2022

In these Dialogues, Lorna Dillon brings together essays that explore the relationship between fiber art and social justice in Latin America. The authors discuss Chilean arpilleras, needlework projects and the struggle for peace in Colombia, the Mexican Embroidering for Peace Movement, and Margarita Cabrera’s fabric sculptures about the US-Mexico borderlands. The section brings the work of scholars from different regions into dialogue. Beatriz Elena Arias López, Berit Bliesemann de Guevara, and Berena Torres Marín reflect on textile initiatives undertaken by peace signatories of the former guerrilla group FARC. Mathilda Shepard analyzes the work of the Tejedoras de Mampuján, asking what it means to speak of justice, reparations, and reconciliation in the wake of the plantation. Danielle House reflects on Mexican embroidery. She considers violence in Mexico and the way the victims it consumes have been framed as “ungrievable.” Mónica Salazar discusses symbolic resistance in participatory needlework projects about the US-Mexico border. Dillon writes about Chilean arpilleras and Colombian testimonial textiles. She draws parallels among the different artistic practices discussed in the collected essays, tracing the emergence of a supranational artistic movement that generates meaning through a multiplicity of practices. The Dialogues demonstrate the new signifying processes that these needlework groups use, as well as the way they articulate meanings that extend beyond the stitches and semiotics of their clothwork.
The Garden of Eden Revisited
Authors: Gaete Miguel A.
Published: October 2022

This article examines the view of South America as the Garden of Eden through the lens of three German romantic artists: Johann Moritz Rugendas, Otto Grashof and Carl Alexander Simon. I discuss some of their paintings and drawings of the jungles of Brazil and the forests of Chile, along with notes and entries from their travelogues, to determine the extent to which specific elements from the German Weltanschauung, together with a colonialist gaze, drove their depiction of South America. The general argument is that linkages between South America and paradise raised by German artists throughout the nineteenth century would not have meant a glorification of South American nature, as is usually maintained. On the contrary, they should be read as the conjunction of factors such as racial assumptions prompted by new scientific disciplines, a sense of cultural superiority, and an intense obsession with both the past and an idea of purity projected onto distant lands. This, in turn, would have been part of a series of appropriative discourses concerning regions beyond Europe, put into practice by German romantic explorers of the time. In this fashion, this essay proposes a reoriented interpretation of these artists and their work, challenging the prevalent idea that the development of romantic landscape painting in South America was almost entirely determined by European aesthetic trends such as the sublime and the picturesque.
Bordando por la paz y la memoria
Authors: House Danielle
Published: October 2022

In these Dialogues, Lorna Dillon brings together essays that explore the relationship between fiber art and social justice in Latin America. The authors discuss Chilean arpilleras, needlework projects and the struggle for peace in Colombia, the Mexican Embroidering for Peace Movement, and Margarita Cabrera’s fabric sculptures about the US-Mexico borderlands. The section brings the work of scholars from different regions into dialogue. Beatriz Elena Arias López, Berit Bliesemann de Guevara, and Berena Torres Marín reflect on textile initiatives undertaken by peace signatories of the former guerrilla group FARC. Mathilda Shepard analyzes the work of the Tejedoras de Mampuján, asking what it means to speak of justice, reparations, and reconciliation in the wake of the plantation. Danielle House reflects on Mexican embroidery. She considers violence in Mexico and the way the victims it consumes have been framed as “ungrievable.” Mónica Salazar discusses symbolic resistance in participatory needlework projects about the US-Mexico border. Dillon writes about Chilean arpilleras and Colombian testimonial textiles. She draws parallels among the different artistic practices discussed in the collected essays, tracing the emergence of a supranational artistic movement that generates meaning through a multiplicity of practices. The Dialogues demonstrate the new signifying processes that these needlework groups use, as well as the way they articulate meanings that extend beyond the stitches and semiotics of their clothwork.
The Authority of the Village Government in the Management of Village Funds during the Covid-19 Pandemic
Authors: Hamdani Fathul , Fauzia Ana
Published: October 2022

The Covid-19 emergency condition requires a change in the priority of using village funds, which was originally to finance government administration, development implementation, community development, and community empowerment switch to village cash direct assistance activities. Mekarsari Village basically had several priorities before the arrival of the Covid-19 pandemic, one of which was the improvement of infrastructure such as roads and government agencies such as village offices due to the earthquake that hit Lombok Island in mid-2018. The purpose of this study is to examine how the impact of the Covid-19 pandemic in Mekarsari Village is, then examine the authority of the Mekarsari Village Government in managing village funds in the Covid-19 pandemic era and how to optimize it, and examine what obstacles are faced by the Mekarsari Village Government in managing funds. village during the Covid-19 pandemic. In this study, the author applies the normative-empirical legal research method using a statutory, conceptual, and sociological approach. The results of the study indicate that the very broad function of the village government is the foundation for the sustainability of effective village government in carrying out local policies, especially in dealing with the Covid-19 pandemic. Then the Mekarsari Village Government has also established a village fund program to support village development so that they are able to optimally manage human and natural resources in order to alleviate new poverty due to the Covid-19 pandemic.