bluuebunny/crossref_metadata_2025 huggingface dataset:
Superiority of optimal broadband filter sets under lower noise levels in multispectral color imaging
Authors: Li Sui‐Xian
Published: March 2021

Optimizing multispectral cameras with broadband or narrowband optical filters is necessary for accurate color reproduction and spectral reconstruction. However, optimal broadband filter sets can provide better performance than narrowband filter sets under certain circumstances; previous studies have not addressed this. Herein, after selecting optimal filter sets by using the multi‐objective optimization method, the optimal broadband and narrowband filter sets were systematically compared. Ten different noise variation levels and five distinct spectral channels were employed to process the imaging simulations. Moreover, typical commercial absorption glass filters were used as the broadband filters, and the transmittance curves of the narrow filters were generated by Gaussian functions with varying parameters rather than specific physical modalities. The results indicated that all the selected optimal broadband filter sets exhibited a better performance at lower noise levels, and all the optimal narrowband filter sets had comparatively stronger anti‐noise features, although the optimal filter sets had a better performance than the suboptimal filter sets for both broadband or narrowband filter sets. The dependence of the two different types of the filters on noise levels for optimal performance is significant for designing multispectral cameras, especially for broadband multispectral imaging sensors during high‐quality spectral acquisition.
The nature of night eating syndrome: Using network analysis to understand unique symptomological relationships
Authors: Beauchamp Marshall T. , Allison Kelly C. , Lundgren Jennifer D.
Published: March 2021

Objectives

Despite the initial characterization of night eating syndrome (NES) in 1955, the definition and operationalization of its symptoms has varied considerably. To standardize the definition of NES and its symptoms, Allison et al. developed research diagnostic criteria. Even so, conceptualization and intervention of NES remains guided by medical models, which assume that pathology is driven by a distinct, underlying causal mechanism. Conversely, recent work on other eating disorders (EDs) has used network analysis to reconceptualize ED psychopathology and treatment by identifying (a) unique relationships between key symptoms, and (b) the symptoms most central to specific EDs. The present study examined NES symptoms through network analysis to identify the most central symptoms within the NES network.

Method

Regularized partial correlation networks were estimated using 144 individuals in a community sample diagnosed with NES. Participants completed semi‐structured interviews, self‐report measures, and food/sleep diaries to measure NES symptoms, nonspecific health domains (e.g., sleep disturbance, overall mood, stress, and circadian rhythm functioning), and transdiagnostic ED symptoms.

Results

Depressed mood, poor sleep quality, and a strong urge to eat upon awakening at night were highly central to the psychopathology network for NES and were significantly more central than most other NES symptoms and nonspecific health domains.

Discussion

This study provides insight on the unique symptomological relationships of NES and sets the stage for future work that can identify causal linkages among NES symptoms. These symptoms represent key elements of the core psychopathology of NES and should represent primary targets for intervention.
Aflatoxin, microbial contamination, sensory attributes, and morphological analysis of pistachio nut coated with methylcellulose
Authors: Moslehi Zeinab , Mohammadi Nafchi Abdorreza , Moslehi Marzie , Jafarzadeh Shima
Published: March 2021

Pistachio is a nut with high consumption that could be affected by aflatoxin contamination, which affects the consumption market; therefore, broad studies seem to be necessary for this area. In the current study, pistachio nuts (Abbasali variety) were coated with different concentrations (0.1%, 0.5%, 1%, and 2%) of methylcellulose (MC) by immersion method and then stored in the incubator (25°C) for four months. The inhibitory effect of hydrocolloid coating on microbial (mold, yeast, and total count) and aflatoxin (B1, B2, G1, G2, and total aflatoxin) contamination, as well as sensory attributes (flavor, color, crispiness, aroma, and total acceptability), was investigated during storage periods. Results showed that the storage period had a significant effect on yeast, mold, and total count. HPLC analysis results showed that coating with MC had a significant inhibitory effect on aflatoxin contamination, and the highest amount of aflatoxin contamination was related to the control sample (3.5%). All samples except sample coated with MC 0.5% had appropriate total acceptability. Regarding the inhibitory effect of MC edible coating on aflatoxin contamination, its application on pistachio nut could be a promising approach to control the fungus infection and reduce aflatoxin production in coated pistachio.
Female mice may have exacerbated catabolic signalling response compared to male mice during development and progression of disuse atrophy
Authors: Rosa‐Caldwell Megan E. , Lim Seongkyun , Haynie Wesley A. , Brown Jacob L. , Deaver John William , Morena Da Silva Francielly , Jansen Lisa T. , Lee David E. , Wiggs Michael P. , Washington Tyrone A. , Greene Nicholas P.
Published: March 2021

Background

Muscle atrophy is a common pathology associated with disuse, such as prolonged bed rest or spaceflight, and is associated with detrimental health outcomes. There is emerging evidence that disuse atrophy may differentially affect males and females. Cellular mechanisms contributing to the development and progression of disuse remain elusive, particularly protein turnover cascades. The purpose of this study was to investigate the initial development and progression of disuse muscle atrophy in male and female mice using the well‐established model of hindlimb unloading (HU).

Methods

One hundred C57BL/6J mice (50 male and 50 female) were hindlimb suspended for 0 (control), 24, 48, 72, or 168 h to induce disuse atrophy (10 animals per group). At designated time points, animals were euthanized, and tissues (extensor digitorum longus, gastrocnemius, and soleus for mRNA analysis, gastrocnemius and extensor digitorum longus for protein synthesis rates, and tibialis anterior for histology) were collected for analysis of protein turnover mechanisms (protein anabolism and catabolism).

Results

Both males and females lost ~30% of tibialis anterior cross‐sectional area after 168 h of disuse. Males had no statistical difference in MHCIIB fibre area, whereas unloaded females had ~33% lower MHCIIB cross‐sectional area by 168 h of unloading. Both males and females had lower fractional protein synthesis rates (FSRs) within 24–48 h of HU, and females appeared to have a greater reduction compared with males within 24 h of HU (~23% lower FSRs in males vs. 40% lower FSRs in females). Males and females exhibited differential patterns and responses in multiple markers of protein anabolism, catabolism, and myogenic capacity during the development and progression of disuse atrophy. Specifically, females had greater mRNA inductions of catabolic factors Ubc and Gadd45a (~4‐fold greater content in females compared with ~2‐fold greater content in males) and greater inductions of anabolic inhibitors Redd1 and Deptor with disuse across multiple muscle tissues exhibiting different fibre phenotypes.

Conclusions

These results suggest that the aetiology of disuse muscle atrophy is more complicated and nuanced than previously thought, with different responses based on muscle phenotypes and between males and females, with females having greater inductions of atrophic markers early in the development of disuse atrophy.
Unpacking professional shame: Patterns of White male engineering students living in and out of threats to their identities
Authors: Huff James L. , Okai Benjamin , Shanachilubwa Kanembe , Sochacka Nicola W. , Walther Joachim
Published: March 2021

Background

Although prior research has provided robust descriptions of engineering students' identity development, a gap in the literature exists related to students' emotional experiences of shame, which undergird the socially constructed expectations of their professional formation.

Purpose

We examined the lived experiences of professional shame among White male engineering students in the United States. We conceptualize professional shame to be a painful emotional state that occurs when one perceives they have failed to meet socially constructed expectations or standards that are relevant to their identity in a professional domain.

Method

We conducted unstructured interviews with nine White male engineering students from both a research‐focused institution and a teaching‐focused institution. We used interpretative phenomenological analysis to examine the interview transcripts.

Results

The findings demonstrated four themes related to how participants experienced professional shame. First, they negotiated their global, or holistic, identities in the engineering domain. Second, they experienced threats to their identities within professional contexts. Third, participants responded to threats in ways that gave prominence to the standards they perceived themselves to have failed. Finally, they repaired their identities through reframing shame experiences and seeking social connection.

Conclusions

The findings demonstrate that the professional shame phenomenon is interwoven with professional identity development. In experiencing professional shame, White male students might reproduce the shame experience for themselves and others. This finding has important implications for the standards against which members from underrepresented groups may compare themselves and provides insight into the social construction of engineering cultures by dominant groups.
Golgi apparatus components in Entamoeba histolytica and Entamoeba dispar after monensin treatment
Authors: Talamás‐Lara Daniel , Acosta‐Virgen Karla , Chávez‐Munguía Bibiana , Lagunes‐Guillén Anel , Salazar‐Villatoro Lizbeth , Espinosa‐Cantellano Martha , Martínez‐Palomo Adolfo
Published: March 2021

Highly dynamic ribosomes, glycogen granules, thinly fibrillar material, and multiple membrane‐bound vesicles are embedded in the matrix‐rich cytoplasm of Entamoeba spp. trophozoites. The absence of a Golgi apparatus in these amoebae has been commonly accepted. Here we challenge this observation by incubating Entamoeba histolytica and Entamoeba dispar with monensin, an ionophore that produces swelling of the Golgi apparatus. We observe changes in the trophozoites through standard transmission electron microscopy, cryofixation and cryosubstitution, and analyze the label and expression of known resident proteins of the cis‐GM130 and trans‐TGN38 Golgi network through confocal microscopy and Western blot assays. Cryosubstitution and standard methods using the treatment, preserved membranous lamellae resembling Golgi components. GM130 and TGN38 Golgi antigens were found by immunoelectron, immunoblot, and co‐localization by confocal microscopy using the reagent NBD C6‐ceramide. Our results indicate that previously undetected Golgi apparatus components are present in the cytoplasm of E. histolytica and E. dispar.
The role of teicoplanin in the treatment of SARS‐CoV‐2 infection: A retrospective study in critically ill COVID‐19 patients (Tei‐COVID study)
Authors: Ceccarelli Giancarlo , Alessandri Francesco , Oliva Alessandra , Borrazzo Cristian , Dell'Isola Serena , Ialungo Anna Maria , Rastrelli Elena , Pelli Massimiliano , Raponi Giammarco , Turriziani Ombretta , Ruberto Franco , Rocco Monica , Pugliese Francesco , Russo Alessandro , d'Ettorre Gabriella , Venditti Mario
Published: March 2021

Teicoplanin has a potential antiviral activity expressed against severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) and was suggested as a complementary option to treat coronavirus disease 2019 (COVID‐19) patients. In this multicentric, retrospective, observational research the aim was to evaluate the impact of teicoplanin on the course of COVID‐19 in critically ill patients. Fifty‐five patients with severe COVID‐19, hospitalized in the intensive care units (ICUs) and treated with best available therapy were retrospectively analysed. Among them 34 patients were also treated with teicoplanin (Tei‐COVID group), while 21 without teicoplanin (control group). Crude in‐hospital Day‐30 mortality was lower in Tei‐COVID group (35.2%) than in control group (42.8%), however not reaching statistical significance (p = .654). No statistically significant differences in length of stay in the ICU were observed between Tei‐COVID group and control group (p = .248). On Day 14 from the ICU hospitalization, viral clearance was achieved in 64.7% patients of Tei‐COVID group and 57.1% of control group, without statistical difference. Serum C‐reactive protein level was significantly reduced in Tei‐COVID group compared to control group, but not other biochemical parameters. Finally, Gram‐positive were the causative pathogens for 25% of BSIs in Tei‐COVID group and for 70.6% in controls. No side effects related to teicoplanin use were observed. Despite several limitations require further research, in this study the use of teicoplanin is not associated with a significant improvement in outcomes analysed. The antiviral activity of teicoplanin against SARS‐CoV‐2, previously documented, is probably more effective at early clinical stages.
Building a local climate reference dataset: Application to the Abruzzo region (Central Italy), 1930–2019
Authors: Curci Gabriele , Guijarro Jose A. , Di Antonio Ludovico , Di Bacco Mario , Di Lena Bruno , Scorzini Anna Rita
Published: March 2021

Reliable secular time series of essential climatic variables are a fundamental element for the assessment of vulnerability, impact and adaptation to climate change. Here, we implement a readily portable procedure for building an upgradable long‐term homogeneous climate dataset using monthly and daily observations of temperature and precipitation over a given area of interest, exemplified here with Abruzzo, a region in Central Italy characterized by complex orography. We process the dataset according to a preliminary ranking of stations based on data quantity and quality, and we exploit the Climatol algorithm for inhomogeneity correction. The corrected time series show trends in broad agreement with external databases (CRU, Berkeley Earth, E‐OBS), and highlight the importance of relying on a local network for a better representation of gradients and variability over the territory. We estimate that maximum (TX) and minimum temperature (TN) increased by ~1.6 and ~2.2°C/century, respectively, over the period 1930–2019, while in the recent decades 1980–2019 we found an accelerated trend of ~5.7 and ~3.9°C/century. Precipitation (RR) decreased by ~10%/century in 1930–2019, while it has been increasing at a rate of ~26%/century in 1980–2019. The Köppen–Geiger climate classification is sensitive to the increase of precipitation in the recent decades, which is attributable to decreased summer precipitation overcompensated by more rain in late spring and early autumn. The cold climate types are retreating upwards along the slopes of the mountain ranges. Over the period 1980–2019, extreme values are also displaying significant trends. Every 2 years, there is one less frost day (TN <0°C) and one more summer day (TX >25°C) in the Apennines area, while there is one more tropical night (TN >20°C) in the Adriatic coastal area. Precipitation extremes are increasing, especially along the coast, with rain accumulated in the rainiest days increasing at a rate of 1–2%/year.
Analyzing the effect of temperature on optical performance of dual‐layer liquid crystal displays
Authors: Gong Xin , Lv Guo‐Qiang , Li Jun‐Jun , Hu Zi‐Ang , Wang Zi , Feng Qi‐Bin
Published: March 2021

The effect of temperature on optical performance of a dual‐layer liquid crystal display (LCD) is investigated by considering LC material parameter and structural deformation of LC panels simultaneously. First, the optical anisotropy of LC material under the influence of temperature is calculated theoretically. Then, the thermal deformations of the dual‐layer LC panels caused by temperature are simulated. Combined with the two factors, the change in optical performance of a dual‐layer LCD under the influence of temperature can be analyzed. In white state, the color in the central area of a dual‐layer LCD is shifted towards blue, and a yellowish border in the edge area may appear. In gray or black state, there may be a light leakage in the edge area of a dual‐layer LCD under the influence of temperature.
Electromagnetic shielding behavior of epoxy multi‐hybrid composites comprises of E‐glass fiber, Ag nanoparticle, and Ni nanosheet: A novel approach
Authors: Merizgui Tahar , Gaoui Bachir , Sebaey Tamer A. , Prakash V. R. Arun
Published: March 2021

High performance epoxy based EMI shielding hybrid composites were prepared and characterized for their mechanical, magnetic, and Electromagnetic Interference (EMI) shielding behavior. The aim of this research was to enhance the electromagnetic interference shielding effect of a nanocomposite at high frequency with good mechanical strength. The shielding effectiveness of the epoxy composite was improved via the addition of E‐glass/silver nanoparticle and nickel nanosheets. The reinforcements were silane surface modified to enhance the adhesion and dispersion of reinforcements with matrix. The composites were prepared via hand layup process using glass fiber, silver nanoparticle, and Ni nanosheets followed by room temperature curing. The characterization of hybrid composites was done in accordance with ASTM standards. The results revealed that the Ag and Ni along with E‐glass fiber improved conductivity, permittivity, and permeability of epoxy composite. Similarly, the mechanical behavior of nanocomposite was found to be increased for tensile, flexural, and Izod impact toughness. Moreover, a maximum wave attenuation of –48 dB was observed for 3‐mm thick composite shielding material in “J” band frequency. These mechanically sound high EMI shielding lightweight polymer composites could be used as potential material for aerospace, defense, tele‐communication, and satellite data transfer applications. Besides the reduction of EMI effect between electronic gadgets could improves the utility and life span of electromagnetic devices and gadgets in several engineering applications.
A comparison of thermally conductive polyamide 6‐boron nitride composites produced via additive layer manufacturing and compression molding
Authors: Bragaglia Mario , Lamastra Francesca R. , Russo Pietro , Vitiello Libera , Rinaldi Marianna , Fabbrocino Francesco , Nanni Francesca
Published: March 2021

Thermally conductive but electrically insulating polymer matrix composites are of great interest in many engineering applications such as thermal management applications (i.e., heat sinks in microelectronic packaging, cooling of mechatronic components and mechanisms). Among possible functional fillers, hexagonal boron nitride seems to be one of the most promising choice due to its high thermal conductivity, and in this work, it was used as filler of polyamide 6 matrix. The resulting composites were first prepared in the form of pellets, extruded into filaments, and successively 3D printed, with the aim to study and compare the thermal performances of the 3D printed samples to the ones manufactured using traditional compression molding technique. The thermal conductivity of 25% wt and 45% wt loaded compression molded samples were 1 and 2.5 W/mK, respectively, while the neat polymer showed a thermal conductivity of 0.29 W/mK. 3D printed samples showed the same trend, namely increasing thermal conductivity with filler amount, despite a great influence of the 3D printing processing parameters (i.e., melt rheology and printing temperature), which lower the resulting thermal conductivity. 3D printed 25% and 45% by weight loaded samples showed a through plane thermal conductivity of 0.67 and 0.92 W/mK, respectively, and in‐plane thermal conductivity of 0.96 and 1.52 W/mK due to the presence of porosity and filler alignment along the printing direction.
Early screening for protective and risk factors—Polish adaptation of the Devereux Early Childhood Assessment
Authors: Sikorska Iwona , Adamczyk‐Banach Magdalena , Polak Mateusz
Published: March 2021

There is a lack of Polish‐language assessment instruments measuring resilience in preschool children. One of the most comprehensive instruments is the Devereux Early Childhood Assessment (DECA): a parent‐ or teacher‐report instrument that measures children's protective and risk factors. It is used to guide resilience training, and to screen for behavioral problems. We validated the Polish adaptation of DECA among parents and teachers of 526 preschool children aged 2–5 years. The DECA scale showed very good internal reliability with Cronbach's ɑs in the  .76–.94 range and decent criterion validity, in terms of correlations with the the Emotionality Activity and Sociability Scale for Children, Locus of Control Scale in Preschoolers and Social Development Scales. A confirmatory factor analysis of the three‐factor model with weighted least square mean and variance adjusted estimation yielded satisfactory fit. Results thus indicate that the Polish version of the DECA scale may be used to assess resilience in children.
A comparison of reweighting estimators of average treatment effects in real world populations
Authors: Lin Chen‐Yen , Kaizar Eloise , Faries Douglas , Johnston Joseph
Published: March 2021

Regulatory agencies typically evaluate the efficacy and safety of new interventions and grant commercial approval based on randomized controlled trials (RCTs). Other major healthcare stakeholders, such as insurance companies and health technology assessment agencies, while basing initial access and reimbursement decisions on RCT results, are also keenly interested in whether results observed in idealized trial settings will translate into comparable outcomes in real world settings—that is, into so‐called “real world” effectiveness. Unfortunately, evidence of real world effectiveness for new interventions is not available at the time of initial approval. To bridge this gap, statistical methods are available to extend the estimated treatment effect observed in a RCT to a target population. The generalization is done by weighting the subjects who participated in a RCT so that the weighted trial population resembles a target population. We evaluate a variety of alternative estimation and weight construction procedures using both simulations and a real world data example using two clinical trials of an investigational intervention for Alzheimer's disease. Our results suggest an optimal approach to estimation depends on the characteristics of source and target populations, including degree of selection bias and treatment effect heterogeneity.
An initial exploration of Bayesian model calibration for estimating the composition of rocks and soils on Mars
Authors: Hébert Claire‐Alice , Lawrence Earl , Myers Kary , Colgan James P. , Judge Elizabeth J.
Published: March 2021

The Mars Curiosity rover carries an instrument, ChemCam, designed to measure the composition of surface rocks and soil using laser‐induced breakdown spectroscopy (LIBS). The measured spectra from this instrument must be analyzed to identify the component elements in the target sample, as well as their relative proportions. This process, which we call disaggregation, is complicated by so‐called matrix effects, which describe nonlinear changes in the relative heights of emission lines as an unknown function of composition due to atomic interactions within the LIBS plasma. In this work, we explore the use of the plasma physics code ATOMIC, developed at Los Alamos National Laboratory, for the disaggregation task. ATOMIC has recently been used to model LIBS spectra and can robustly reproduce matrix effects from first principles. The ability of ATOMIC to predict LIBS spectra presents an exciting opportunity to perform disaggregation in a manner not yet tried in the LIBS community, namely via Bayesian model calibration. However, using it directly to solve our inverse problem is computationally intractable due to the large parameter space and the computation time required to produce a single output. Therefore, we also explore the use of emulators as a fast solution for this analysis. We discuss a proof of concept Gaussian process emulator for disaggregating two‐element compounds of sodium and copper. The training and test datasets were simulated with ATOMIC using a Latin hypercube design. After testing the performance of the emulator, we successfully recover the composition of 25 test spectra with Bayesian model calibration.
Evaluation of the cost-utility of phosphate binders as a treatment option for hyperphosphatemia in chronic kidney disease patients: a systematic review and meta-analysis of the economic evaluations
Authors: Chaiyakittisopon Kamolpat , Pattanaprateep Oraluck , Ruenroengbun Narisa , Sapankaew Tunlanut , Ingsathit Atiporn , Mckay Gareth J. , Attia John , Thakkinstian Ammarin
Published: March 2021

Background

Uncontrolled hyperphosphatemia in chronic kidney disease (CKD) patients commonly results in vascular calcification leading to increased risk of cardiovascular disease. Phosphate binders (PBs) are used for hyperphosphatemia and can be calcium-based (CBPBs) or non-calcium-based (NCBPBs), the latter being more expensive than CBPBs. In this study, we used meta-analysis approaches to assess the cost-utility of PBs for hyperphosphatemia in CKD patients.

Methods

Relevant studies published prior to June 2019 were identified from PubMed, Scopus, the Cochrane Library, the National Health Service Economic Evaluation Database, and the Cost-Effectiveness Analysis Registry. Studies were eligible if they included CKD patients with hyperphosphatemia, compared any PBs and reported economic outcomes. Meta-analysis was applied to pool incremental net benefit (INB) across studies stratified by country income.

Results

A total of 25 studies encompassing 32 comparisons were eligible. Lanthanum carbonate, a NCBPB, was a more cost-effective option than CBPBs in high-income countries (HICs), with a pooled INB of $3984.4 (599.5–7369.4), especially in pre-dialysis patients and used as a second-line option with INBs of $4860.2 (641.5–9078.8), $4011.0 (533.7–7488.3), respectively. Sevelamer, also a NCBPB, was not more cost-effective as a first-line option compared to CBPBs with a pooled INB of $6045.8 (− 23,453.0 to 35,522.6) and $34,168.9 (− 638.0 to 68,975.7) in HICs and upper middle-income countries, respectively.

Conclusions

Lanthanum carbonate was significantly more cost-effective than CBPBs as a second-line option for hyperphosphatemia in pre-dialysis patients in HICs. However, the use of sevelamer is not more cost-effective as a first-line option compared to CBPBs.
Correction to: Antihypertensive constituents in Sanoshashinto
Authors: Wu Jianbo , Nakashima Souichi , Shigyo Marina , Yamasaki Mutsumi , Ikuno Sumire , Morikawa Aoi , Takegami Shigehiko , Nakamura Seikou , Konishi Atsuko , Kitade Tatsuya , Matsuda Hisashi
Published: March 2021

The article Antihypertensive constituents in Sanoshashinto, written by Jianbo Wu, Souichi Nakashima, Marina Shigyo, Mutsumi Yamasaki, Sumire Ikuno, Aoi Morikawa, Shigehiko Takegami, Seikou Nakamura, Atsuko Konishi, Tatsuya Kitade and Hisashi Matsuda, was originally published Online First without Open Access.
The mediational role of intimate partner acceptance and psychological adjustment in the relationship between intimate partner control and marital adjustment
Authors: İyiaydın Ayşegül Aracı , Sümer Zeynep Hatipoğlu
Published: March 2021

Grounded in Interpersonal Acceptance-Rejection Theory (IPARTheory), this exploratory study investigated the associations among perceived intimate partner rejection, intimate partner control, psychological maladjustment, and marital adjustment. Perceived behavioral control in intimate partner relationships has been under-researched within the context of IPARTheory. Although the role of behavioral control in child/adolescent-parent relationships has been well-established, insufficient exploration of the phenomenon in marriage relationships calls for new empirical findings. The conveniently selected sample consisted of 624 (360 female, 264 male) married individuals living in big cities of Turkey. Intimate Partner Acceptance-Rejection/Control Questionnaire, Personality Assessment Questionnaire, Dyadic Adjustment Scale, and Demographic Form were utilized to gather data. Structural Equation Modeling was utilized as the primary analysis to test the proposed sequential mediational model of the study. The results indicated that intimate partner behavioral control was significantly and indirectly associated with marital adjustment through the mediating effects of intimate partner rejection and psychological maladjustment. Moreover, intimate partner rejection had direct effects on psychological maladjustment and marital adjustment. The indirect effect of intimate partner rejection on marital adjustment via the mediation of psychological maladjustment was found to be significant. Lastly, the sequential mediation by intimate partner rejection and psychological maladjustment in the relationship between intimate partner control and marital adjustment was also significant. This study adds to the existing literature on IPARTheory by showing that perceived intimate partner behavioral control is quite negatively related to marital adjustment. Results underscore how perceived behavioral control by a spouse triggers rejection and diminishes the psychological adjustment of the controlled partner.
Switched time delay control based on artificial neural network for fault detection and compensation in robot manipulators
Authors: Maincer Dihya , Mansour Moufid , Hamache Amar , Boudjedir Chemseddine , Bounabi Moussaab
Published: March 2021

This work proposes a switched time delay control scheme based on neural networks for robots subjected to sensors faults. In this scheme, a multilayer perceptron (MLP) artificial neural network (ANN) is introduced to reproduce the same behavior of a robot in the case of no faults. The reproduction characteristic of the MLPs allows instant detection of any important sensor faults. In order to compensate the effects of these faults on the robot’s behavior, a time delay control (TDC) procedure is presented. The proposed controller is composed of two control laws: The first one contains a small gain applied to the faultless robot, while the second scheme uses a high gain that is applied to the robot subjected to faults. The control method applied to the system is decided based on the ANN detection results which switches from the first control law to the second one in the case where an important fault is detected. Simulations are performed on a SCARA arm manipulator to illustrate the feasibility and effectiveness of the proposed controller. The results demonstrate that the free-model aspect of the proposed controller makes it highly suitable for industrial applications.
Design of Sand‐Based, 3‐D‐Printed Analog Faults With Controlled Frictional Properties
Authors: Braun Philipp , Tzortzopoulos Georgios , Stefanou Ioannis
Published: March 2021

Laboratory experiments with surrogate materials play an important role in fault mechanics. They can improve the current state of knowledge by testing various scientific hypotheses in a repeatable and controlled way. Central in these experiments is the selection of appropriate analog, rock‐like materials. Here, we investigated the frictional properties of sand‐based, 3‐D‐printed materials. We performed uniaxial compression tests, direct shear, and inclined plane tests in order to determine a) the main bulk mechanical parameters of this new analog material, b) its viscous behavior, c) its frictional properties, and d) the influence of some printing parameters. Complete stress‐strain/apparent friction‐displacement curves were presented including the post‐peak, softening behavior, which is a key factor in earthquake instability. Going a step further, we printed rock‐like interfaces of custom frictional properties. Based on a simple analytical model, we designed the a) maximum, minimum, and residual apparent frictional properties, b) characteristic slip distance, c) evolution of the friction coefficient with slip, and d) dilatancy of the printed interfaces. This model was experimentally validated using interfaces following a sinusoidal pattern, which led to an oscillating evolution of the apparent friction coefficient with slip. Our approach could be used for simulating earthquake‐like instabilities in the laboratory and mimic the periodical rupture and healing of fault sections. Additionally, our tests showed the creation of a gouge‐like layer due to granular debonding during sliding, whose properties were quantified. The experimental results and the presented methodology make it possible to design new surrogate laboratory experiments for fault mechanics and geomechanics.
EM1‐Signature in the North Fiji Basin: Evidence for Stagnant Slab‐Derived Mantle Upwelling Beneath the Trench‐Distal Back‐Arc Basin
Authors: Oh Jihye , Lee Insung , Stuart Finlay M. , Park Munjae , Kim Jonguk
Published: March 2021

Basaltic volcanism at the mature back‐arc spreading axis in the North Fiji Basin (NFB) exhibits significant geochemical heterogeneity from depleted mid‐ocean ridge basalt (MORB) to enriched MORB compositions. The volatile and Sr‐Nd‐Pb‐He isotope composition of basaltic glasses from the Central Spreading Ridge (CSR) of the NFB suggests that a second enrichment mantle component is present in addition to the previously observed Samoan mantle plume. The hydrous OIB‐like basalts from the northern CSR have a weak enriched mantle 1 (EM1) isotopic signature and negative correlation between Ba/Th and Zr/Hf ratios, similar to rejuvenated Samoan lavas associated with tectonic driven volcanism. The EM1 signature is distinct from shield‐stage Samoan basalts and back‐arc basin basalts from the Lau Basin by high Ba/La ratio and negative correlation between Ba/Th and Ba/Ta ratios, indicating contributions from dehydrated and altered oceanic crust and sediments. Our new geochemical data suggest that focused melting above the mantle transition zone (MTZ) triggered by dehydration of stagnant slab can be a source of the EM1‐like melts containing both elevated 3He/4He ratios (up to 12.52 RA) and altered oceanic slab components. Given the spatial coincidence of the inferred EM1 basalts with the clustered deep earthquakes, our results support the presence of detached oceanic slabs in the MTZ beneath the northern NFB.
Resolving Wave Propagation in Anisotropic Poroelastic Media Using Graphical Processing Units (GPUs)
Authors: Alkhimenkov Yury , Räss Ludovic , Khakimova Lyudmila , Quintal Beatriz , Podladchikov Yury
Published: March 2021

Biot's equations describe the physics of hydromechanically coupled systems establishing the widely recognized theory of poroelasticity. This theory has a broad range of applications in Earth and biological sciences as well as in engineering. The numerical solution of Biot's equations is challenging because wave propagation and fluid pressure diffusion processes occur simultaneously but feature very different characteristic time scales. Analogous to geophysical data acquisition, high resolution and three dimensional numerical experiments lately redefined state of the art. Tackling high spatial and temporal resolution requires a high‐performance computing approach. We developed a multi‐ graphical processing units (GPU) numerical application to resolve the anisotropic elastodynamic Biot's equations that relies on a conservative numerical scheme to simulate, in a few seconds, wave fields for spatial domains involving more than 1.5 billion grid cells. We present a comprehensive dimensional analysis reducing the number of material parameters needed for the numerical experiments from ten to four. Furthermore, the dimensional analysis emphasizes the key material parameters governing the physics of wave propagation in poroelastic media. We perform a dispersion analysis as function of dimensionless parameters leading to simple and transparent dispersion relations. We then benchmark our numerical solution against an analytical plane wave solution. Finally, we present several numerical modeling experiments, including a three‐dimensional simulation of fluid injection into a poroelastic medium. We provide the Matlab, symbolic Maple, and GPU CUDA C routines to reproduce the main presented results. The high efficiency of our numerical implementation makes it readily usable to investigate three‐dimensional and high‐resolution scenarios of practical applications.
Aerosol Climatology Over South and Southeast Asia: Aerosol Types, Vertical Profile, and Source Fields
Authors: Banerjee Tirthankar , Shitole A. S. , Mhawish Alaa , Anand A. , Ranjan R. , Khan Md F. , Srithawirat T. , Latif Mohd T. , Mall R. K.
Published: March 2021

Aerosol climatology during typical haze dominating period over South and Southeast Asia was explored using several Earth‐Observing A‐Train satellite products retrieved in between 2010 and 2020. Comparatively high aerosol optical depth (AOD) with dominance of fine and UV‐absorbing aerosols are noted across the Indo‐Gangetic plain, South Asia (IGP; AOD: 0.58; UVAI: 0.74) against weak UV‐absorbing fine aerosols over Southeast Asia (SEA; AOD: 0.26; UVAI: 0.07). Among inland IGP sites, decadal mean AOD resembles in Lahore (0.72 ± 0.45), Delhi (0.81 ± 0.46), Kanpur (0.84 ± 0.42), and Varanasi (0.78 ± 0.45); all exhibiting bimodal AOD distribution with a first peak in early November followed by a second in early January. In contrast, except mainland site Chiang Mai, all SEA maritime cities resemble in having typical September‐October AOD peak, with the presence of fine and UV‐neutral aerosols. Urban hotspots across IGP and SEA (except Dhaka, Chiang Mai) denote a spatially consistent minor increasing trend in AOD (0.2–1.8 × 10−2 year−1) while increase in UVAI is more prominent over upper IGP. Dust aerosols dominate only in Karachi (46%) against strong UV‐absorbing smoke aerosols over rest of the IGP (71–91%), and UV‐neutral smoke aerosols across SEA (84–92%). Vertical stratification of aerosol types is noted across IGP as in lower atmosphere (<4 km) polluted dust/urban aerosols remain abundant, with gradual decrease in dust aerosols from upper to lower IGP and consequent increase in smoke aerosols. At upper atmosphere (>4 km), however, dust aerosols clearly dominate. Over SEA, smoke are the most abundant aerosols across the atmospheric column followed by polluted dust. No evidence of intracontinental transport of aerosols from IGP to Southeast Asia or vice versa is, however, noted.
Spatial and Temporal Distribution of Sea Salt Aerosol Mass Concentrations in the Marine Boundary Layer From the Arctic to the Antarctic
Authors: Jiang Bei , Xie Zhouqing , Lam Paul K. S. , He Pengzhen , Yue Fange , Wang Longquan , Huang Yikang , Kang Hui , Yu Xiawei , Wu Xudong
Published: March 2021

Global warming, increases in sea surface temperatures (SST), and reductions in sea ice may lead to changes in the distribution of global sea salt aerosol (SSA) concentrations, which may in turn affect the global climate. However, there are few global‐scale observations of SSA over marine environments. Here, we report SSA mass concentrations observed along the cruise tracks of the Chinese Polar Research Expedition in summer 2008–2018. We found the following: (1) There are significant differences between SSA concentrations in sea areas at different latitudes, and that of the Arctic Ocean was significantly lower than other sea areas; (2) over the last 10 years, the SSA concentrations in the Bering Sea were significantly higher in 2016 than in 2012, and trends from the Arctic Ocean and Southern Ocean are similar, as both showed a minimum in 2014; (3) the sea‐air temperature differences among the various marine regions studied may contribute to the different distribution of SSA concentrations; (4) sea ice fraction and SST are probably the main factors controlling the interannual changes in SSA concentrations in the Arctic Ocean and Bering Sea, respectively; and (5) The large sea‐air temperature difference in the Southern Ocean may promote the emission of SSA. Therefore, the SST parameterization of GEOS Chem model in the low SST sea area (the Southern Ocean) may have an excessively large effect on suppressing SSA emission resulting in a significant underestimation of the GEOS‐Chem model in the Southern Ocean (−62%).
Assessing the Representation of Synoptic Variability Associated With California Extreme Precipitation in CMIP6 Models
Authors: Norris Jesse , Hall Alex , Chen Di , Thackeray Chad W. , Madakumbura Gavin D.
Published: March 2021

Days of extreme precipitation over California are evaluated in Coupled Model Intercomparison Project Phase 6 (CMIP6) models and the ERA‐Interim reanalysis. In the current climate, the model spread in composited precipitation on extreme precipitation days is closely related to the magnitude of composited integrated vapor transport (IVT) across models, a proxy for the intensity of atmospheric rivers. Most models underestimate the magnitude of IVT associated with extreme precipitation, according to ERA‐Interim. This is due mostly to the contribution of moisture, which almost all models overestimate, while the contribution of lower‐tropospheric wind speed is generally closer to the reanalyses. Moreover, most models underestimate the variance in the latitude of maxima of numerous variables among days of extreme California precipitation. That is, in the general circulation models there is a lack of diversity in the latitude of the disturbances bringing winter precipitation to California. In the future climate, most models project a decrease in the frequency of southward‐displaced disturbances among California extreme precipitation days. Hence, the greatest increases in extreme precipitation are over northern California. However, the historical underestimate of the latitudinal variance of disturbances calls into question the reliability of these projections. This bias should be especially considered for dynamical downscaling efforts over the region.
Image restoration model using Jaya‐Bat optimization‐enabled noise prediction map
Authors: S. P Premnath , Renjit J. Arokia
Published: March 2021

Image restoration approaches are introduced to restore the latent clear images from the degraded images. However, the performance of the existing approaches remains an open problem, which may leads to the further development of advanced image restoration techniques. Therefore, an effective image restoration method is developed for restoring the input image from various noises, like impulse noise and random noise. The generation of pixel map, identification of noisy pixel, and the enhancement of pixel are the three major phases involved in the proposed method. Initially, the noisy pixel map generation is performed from the input image, and then the noisy pixels are identified based on deep convolutional neural network, which is trained by the proposed Jaya‐Bat algorithm. The Jaya‐Bat algorithm is developed by combing the Jaya optimization algorithm and Bat algorithm. Once the noisy pixels are identified, the pixel enhancement is done using the neuro fuzzy system. The experiment is carried out using Statlog (landsat satellite) dataset, and the developed method achieves the maximal peak signal to noise ratio of 51.03 dB, maximal structural similarity index of 0.848 for the image with random noise, and the maximal second derivative like measure of enhancement 62.96 dB with impulse noise, respectively.
Fusobacterium nucleatum impedes remission of colitis in a mouse model
Authors: Yamashita Taiga , Tai Shoya , Tsukahara Takamitsu , Inoue Ryo
Published: March 2021

The role of Fusobacterium nucleatum, often associated with intestinal diseases, in the remission of dextran sulfate sodium (DSS)-induced colitis was investigated. Female mice were divided into groups DC (DSS control) and DF (DSS + F. nucleatum). F. nucleatum (1.0 × 1010 cfu/mouse/day) in phosphate-buffered saline (PBS) was orally given to DF, while DC had PBS only. All mice had DSS in drinking water. In Experiment 1, mice underwent 2 inflammation phases, an in-between recovery phase and had their disease activity indices (DAI) calculated. Experiment 2 was similarly conducted, except that mice were dissected 3 days postrecovery, and had blood and colonic mucosal samples collected. In Experiment 1, DF had significantly (P < .05) higher DAI than DC, during the recovery and 2nd inflammation phases. In Experiment 2, genus Bacteroides was significantly (P < .05) higher and family Lachnospiraceae significantly lower in cecal mucosa-associated microbiota of DF than in that of DC. We concluded that F. nucleatum can impede colitis remission.
Par3/integrin β1 regulates embryo adhesion via changing endometrial luminal epithelium polarity
Authors: Peng Jiali , Li Xiaoling , Zhang Yan , Hu Jian , Shang Yunjie , Yin Yuchen , Xiao Zhuoni
Published: March 2021

The objective is to investigate the pathophysiological significance of Par3 and integrin β1 with regard to the functionality of the endometrial luminal epithelium (LE). Design: laboratory study; setting: university research laboratory. Analysis involved endometrial aspirates and endometrial adenocarcinoma cells (HEC-1A) and endometrial carcinoma cells (RL95-2). We first examined the expression and localization of Par3 and integrin β1 in HEC-1A cells and RL95-2 cells. Then we knocked down Par3 and integrin β1 in HEC-1A cells and RL95-2 cells, respectively, and found that Par3/integrin β1 affected embryo adhesion by regulating the intercellular tight junctions’ (TJs’) structure and thus the polarity of the endometrial LE. These findings were also confirmed in the endometrium specimens from human and mice. The main outcome measures were the expression and localization of Par3 and integrin β1 in the endometrial epithelial cell lines and endometrium specimens and the regulations of Par3 and integrin β1 on TJs, polarity, and embryo adhesion. Following the knockdown of Par3 in HEC-1A cells, there was a reduction in the complexity of the TJs and cell polarity, and the adhered blastocysts number was significantly increased. However, the reduction of integrin β1 in RL95-2 cells resulted in effects that directly opposed those following the knockdown of Par3 in HEC-1A cells. Estrogen and progesterone reduced the expression of Par3 and promoted the expression of integrin β1 in HEC-1A cells. Par3/integrin β1 regulates embryo adhesion by regulating intercellular TJs’ structure and polarity of endometrial LE under the action of ovarian hormones.
A Crimson Rosella for Josephine
Authors: Fishburn Matthew
Published: March 2021

A hitherto unrecorded engraving, dated 1803, can now be shown to be the first depiction of an Australian Crimson Rosella (Platycercus elegans) made in France. The engraving was made by François Nicolas Martinet, the ornithological specialist famous for his work with the Comte de Buffon. Quite apart from the intrinsic interest of the image, its history sheds light on the earliest phase of the collection of Josephine Bonaparte at Malmaison, her property on the western outskirts of Paris, and the substantial work she was overseeing in the first years of the century, especially in respect of the natural history collections made during the voyage to Australia of Nicolas Baudin in 1800–04. The plate also provides the key to the story of Martinet’s final, abandoned publication, a work that was advertised in 1804 but never completed, copies of which are held in the Smithsonian Libraries and Archives and in Trinity College, Hartford, CT.