bluuebunny/crossref_metadata_2025 huggingface dataset:
Integration of propelled yaw control on wing tips: a practical approach to the Icaré solar-powered glider
Authors: Schneider Johannes , Frangenberg Michael , Notter Stefan , Scholz Werner , Fichter Walter , Strohmayer Andreas
Published: September 2022

In this practical approach to distributed propulsion, the solar-powered manned motorglider icaré 2 has been used as a testbed for wingtip propulsion. The large wingspan and slow cruising speed of icaré 2 are highly suitable to assess the influence and potential of propellers at the wingtips for yaw control. The paper describes the work of a multidisciplinary team consisting of researchers, engineers, pilots and students, starting from the initial idea to use propellers at the wingtips of icaré 2 up to the actual flight test campaign. First, the design and development of the modular wingtip pods are described to house the propeller, electric motor, battery and further sensors and control systems. Furthermore, the modifications required for integrating the wingtip pods on the aircraft itself are outlined and the electrical and mechanical interfaces are defined and described. To obtain a permit to fly for the new configuration of the aircraft, several tests on system level of the wingtip pods needed to be conducted and documented for the authorities. Finally, the flight test campaigns carried out to date are outlined and described including the planning, lessons learned and results.
Dandy–Walker malformation and variants: clinical features and associated anomalies in 28 affected children—a single retrospective study and a review of the literature
Authors: Di Nora A. , Costanza G. , Pizzo F. , Di Mari A. , Sapuppo A. , Basile A. , Fiumara A. , Pavone P.
Published: September 2022

Objective

To investigate the clinical characteristics, the neuroimaging features and associated anomalies observed in children affected by Dandy–Walker malformations (DWM) and variants (DWV) in a single tertiary hospital in Catania and compare our data to their existent in the literature.

Methods

A retrospective case series using the medical records has been performed on 28 children diagnosed with DWM and DWV admitted to a single tertiary section of Pediatric Neurology, Department of Catania, Italy from January 2005 to January 2021. We reviewed the neuroimaging using the new diagnostic criteria of Klein et al.

Results

Associated anomalies were frequently reported. Among these, hydrocephalus was found in 13/28 (48%), and hydrocephalus plus corpus callosum anomalies in three children (10%). We described corpus callosum, cardiac and genitourinary anomalies in 2/28 (7%), 3/28 (10%), and 3/28 (10%), respectively. The most common clinical features were the developmental delay and epilepsy observed in 19/28 (67%) and in 9/28 (32%) of the cases. The first exam at the diagnosis was MRI in 17/28 patients, followed by transfontanellar ultrasound in 5/28, computed tomography in 4/28 and prenatal ultrasound in 2/28. To note, a child with DWM was affected by Down syndrome and one by congenital disorders of N-linked glycosylation (CDG-IId).

Conclusions

Children with DWV were more commonly observed than children with DWM. Hydrocephalus is an anomaly, frequently and equally reported in both DWM and DMV. Perinatal complications were frequent adverse events with severe respiratory distress and need for cardiopulmonary resuscitation. Cognitive involvement and epilepsy were the most common comorbidities. Single DWV is associated with a better developmental outcome.
Proportionality of Trade Secret Remedies in European Union – In Comparison with Patent Law Enforcement
Authors: Mylly Ulla-Maija
Published: September 2022

In academic discourse it has been pointed out that many European courts do not pay sufficient attention to assessing the proportionality of patent law remedies. Article 3 of the Enforcement Directive (IPRED), which harmonizes the remedies for all intellectual property rights (IPRs), requires that remedies be proportionate. However, it seems that this requirement is often overlooked, with more attention being paid to the rest of Art. 3, namely the requirements that remedies be efficient and dissuasive. This article contributes to the discussion on the potential over-enforcement of IPRs, but focuses in particular on analyzing the remedies available under the Trade Secret Directive (TSD). Special attention will be paid to the explicit proportionality factors under the TSD. The availability of the bona fide defense under the TSD will also be analyzed. In this article, comparisons will be made between remedies under patent law and those under trade secret law. This article argues that the trade secret regime differs from the patent regime. Therefore, balancing the various interests under the TSD proportionality factors and the bona fide defense is more important under the trade secret regime than under the patent regime. This article seeks both to identify the differences between the two regimes and to dissect possibilities for a more balanced approach to enforcement practices under the IPRED for patent rights.
Behind the Wheel: Systematic Review of Factors Associated with Safe School Bus Transportation for Children with Neurodevelopmental Disorders
Authors: Chan Lynette Y. L. , Senserrick Teresa , Saggers Beth
Published: September 2022

School buses facilitate access to education for many children. This research aimed to systematically review factors associated with safe school bus transportation for children with neurodevelopmental disorders (NDDs). Searches of 5 databases, combining terms denoting NDDs and school buses, for English publications since 2000, yielded only 12 relevant articles among 1524 records. Literature was limited to parent-based studies, guidelines, reviews or commentaries. There was scant attention to the immediate roles of bus drivers and aides. Literature recommendations included increased attention to the needs of children with NDDs and improved communication, collaboration, support and training across all key stakeholders, particularly to improve implementation of individual child safety plans. Further research is needed on this critical support service for many families.
Racial and Ethnic Disparities in Health Status and Community Functioning Among Persons with Untreated Mental Illness
Authors: Snowden Lonnie R. , Cordell Katharan , Bui Juliet
Published: September 2022

Using  6 years of data from the National Survey of Drug Use and Health, the present study investigated ethnic minority-White disparities in self-rated health and community functioning for persons with untreated mental illness. Comparing minority and White persons with untreated severe mental illness (SMI) and mild and moderate mental illness (MMMI), the study sought evidence of “double jeopardy”: that minority persons with mental illness suffer an added burden from being members of ethnic minority groups. For African Americans with SMI and MMMI, results indicated that the odds were greater of living in poverty, being unemployed, and being arrested in the past year, and for African Americans with SMI, the odds were greater of reporting fair/poor health. For Native Americans/Alaska Native persons with MMMI, the odds were greater of living in poverty and being arrested in the past year. For Latinx persons with SMI and MMMI, the odds were greater of living in poverty and for Latinx persons with SMI the odds were greater of reporting fair/poor health. Results indicate that African Americans with mental illness suffer pervasive adversity relative to Whites and Native Americans/Alaska Natives and Latinx persons do so selectively.
A Study of Immigrant Latinas Perspectives of Caring for their Diabetes
Authors: Titus Sharon K. , Quiles–Pollard Gina
Published: September 2022

Hispanic–Americans are disproportionately affected by type 2 diabetes compared to non-Hispanic Whites. Five million adult Hispanic Americans are estimated to have been diagnosed with T2D. Among US Hispanics, Mexicans have the highest rate (14.4%) of diabetes. Further, Hispanics are also twice as likely as non-Hispanics Whites to die from diabetes, making it the fifth leading cause of their death and a serious health problem in Hispanic communities. Yet, little is understood of what rural immigrant Latinas do to care for their diabetes health. In-depth interviews (3 focus groups) and thematic analysis found 16 Latinas had T2D on average for 9 years; all emigrated to the USA from Mexico, lived in the USA for an average of 27 years, and worked (60%). Within the domain of “What do you do to take care of your health?” Latinas desired to adhere to exercise, controlled diet, and medications, but perceived a powerful barrier to a healthy life was the American lifestyle that included long work days, more money to purchase unhealthy foods and a desire for them, and a lack of time for other forms of exercise. Despite the Latina participants’ years of experience about living with T2D in the US, they still struggled to adhere to healthy behaviors. Future research should address the longer time Hispanic immigrants live in the US with the more at-risk they become for diminished health.
Multiple spatial residual network for object detection
Authors: Dong Yongsheng , Jiang Zhiqiang , Tao Fazhan , Fu Zhumu
Published: September 2022

Many residual network-based methods have been proposed to perform object detection. However, most of them may lead to overfitting or cannot perform well in small object detection and alleviate the problem of overfitting. We propose a multiple spatial residual network (MSRNet) for object detection. Particularly, our method is based on central point detection algorithm. Our proposed MSRNet employs a residual network as the backbone. The resulting features are processed by our proposed residual channel pooling module. We then construct a multi-scale feature transposed residual fusion structure consists of three overlapping stacked residual convolution modules and a transpose convolution function. Finally, we use the Center structure to process the high-resolution feature image for obtaining the final prediction detection result. Experimental results on PASCAL VOC dataset and COCO dataset confirm that the MSRNet has competitive accuracy compared with several other classical object detection algorithms, while providing a unified framework for training and reasoning. The MSRNet runs on GeForce RTX 2080Ti.
Fusion of SAR and Multi-spectral Time Series for Determination of Water Table Depth and Lake Area in Peatlands
Authors: Krzepek Katrin , Schmidt Jakob , Iwaszczuk Dorota
Published: September 2022

Peatlands as natural carbon sinks have a major impact on the climate balance and should therefore be monitored and protected. The hydrology of the peatland serves as an indicator of the carbon storage capacity. Hence, we investigate the question how suitable different remote sensing data are for monitoring the size of open water surface and the water table depth (WTD) of a peatland ecosystem. Furthermore, we examine the potential of combining remote sensing data for this purpose. We use C-band synthetic aperture radar (SAR) data from Sentinel-1 and multi-spectral data from Sentinel-2. The radar backscatter $$\sigma ^0$$

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0

, the normalized difference water index (NDWI) and the modified normalized difference water index (MNDWI) are calculated and used for consideration of the WTD and the lake size. For the measurement of the lake size, we implement and investigate the methods: random forest, adaptive thresholding and an analysis according to the Dempster–Shafer theory. Correlations between WTD and the remote sensing data $$\sigma ^0$$

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0

as well as NDWI are investigated. When looking at the individual data sets the results of our case study show that the VH polarized $$\sigma ^0$$

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0

data produces the clearest delineation of the peatland lake. However the adaptive thresholding of the weighted fusion image of $$\sigma ^0$$

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0

-VH, $$\sigma ^0$$

σ
0

-VV and MNDWI, and the random forest algorithm with all three data sets as input proves to be the most suitable for determining the lake area. The correlation coefficients between $$\sigma ^0$$

σ
0

/NDWI and WTD vary greatly and lie in ranges of low to moderate correlation.
A Contextualized Acceptance Model for Proactive Smart Services
Authors: Graf-Drasch Valerie , Röglinger Maximilian , Wenninger Annette , Hosseini Sabiölla
Published: September 2022

Thanks to digital technologies, information about customer needs and contexts is becoming accessible ever more easily and service providers are more closely connected to customers. This development enables services to act on behalf of customers and to proactively initiate the customer interactions. Such services are so-called proactive smart services (PASS) and are a subgroup of smart services. Research suggests that service providers often face the challenge to gain customers’ acceptance of innovative services. In response to this call for action and the change in customer interaction, which can have far-reaching consequences in the lives of customers, we examined the antecedents that explain customers’ acceptance of PASS using a contextualized approach. Hence, we identified PASS-specific antecedents, developed a contextualized acceptance model (UTAUT2-PASS) while drawing from general acceptance theory, and validated it empirically. A comparison of our contextualized model with UTAUT2 as an established yet uncontextualized model confirmed the outperformance of our contextualized model. Our findings advance the academic understanding of PASS and help service providers design PASS for customer acceptance.
Research on the performance of hydraulic vibratory hammer with coupled dynamic model
Authors: Lulu Gao , Dongyue Wang , Shite Wang
Published: September 2022

Hydraulic vibratory hammer is a key equipment during piling process, and mechanical, hydraulic part of the hammer and workload are coupled with each other during operation. The vibration performance depends on the design parameters and the driving system. In order to investigate the vibration performance, a coupled dynamic model is established for hydraulic vibratory hammer, in which the mechanical model of hammer, hydraulic model for driving, and the model of workload are included. The filed test was carried out to validate the dynamic model under idle and operating conditions. Pressure and flow of the hydraulic driving system and acceleration of the mechanical part were obtained during different test conditions. The results of test and simulation were analyzed in time and frequency domain to validate the coupled dynamic model. Then, effects of different eccentric block parameters on the vibration performance were investigated based on the validated model, including radius, thickness, and angle of the eccentric block. Further the design parameters of optimal vibration performance of the hammer are obtained under the constraints of hammer structure, in which the angle is 90°, thickness is 190 mm, and radius is 175 mm.

Article Highlights

We established a coupled dynamic model of the hydraulic vibratory hammer, including the mechanical model of hammer, hydraulic model for driving, and the simplified model of workload.;

The field test is proceeded to validate the model under idle and operating condition; the dynamic response of the mechanical part and hydraulic driving part is analyzed in time and frequency domain;

The performance of the hammer is analyzed with the coupled dynamic model, in which better performance of the hammer is obtained. The model-based method also provides a rapid and economical solution for the performance optimization of the hammer.
Experimental investigation of ribbing pattern effect on the bonding qualities of water jet cut steel reinforcement
Authors: Higuchi Rayna , Jewett Jackson L. , Carstensen Josephine V.
Published: September 2022

With the rise of interest in digital fabrication of reinforced concrete structures, a great number of structural concrete designs that depart from standard prismatic shapes are being suggested. This has prompted an exploration of steel reinforcement strategies that are alternative to the classical deformed or “ribbed” rebars. One such is to cut internal reinforcement from steel plates using a waterjet cutting machine. Advantages of automated waterjet cutting steel reinforcement include high precision and accuracy, and minimal expense for increasing the complexity of (2D) reinforcement layouts. However, it is not known how the application of ribbing patterns along the cut edge of reinforcing bars affects the steel–concrete bond. This work conducts experimental pullout tests of waterjet-cut steel plate reinforcement with three different ribbing patterns and compares the bond strength with equivalent classic rebars. Two of the tested geometries averaged within 90–91% of the pull-out force of conventional rebar, demonstrating viability of this alternative reinforcement method.
Cerebro-oculo-nasal syndrome, a congenital anomaly: A rare case report
Authors: Anzali Babak Choobi , Talebiazar Nasim , Goli Rasoul , Arad Mansour , Norouzrajabi Samira , Muhammadi Sheida , Babamiri Behnam
Published: September 2022

Abstract

Introduction and importance

The most common congenital defect involving the face and jaws is cleft lip and palate. Exactly where they appear is determined by the locations at which fusion of the various facial processes failed to occur. The lip or the lip and palate together fail to close in approximately 1–1.5 in every 1000 babies born.

Case presentation

The present case report is of a 36-week- and 4-day-old male fetus with a birth weight of 2100 gr, a height of 41 cm, and a head circumference of 35 cm. He was born to a 42-year-old mother by Cesarean section at Kosar Obstetrics and Gynecology Hospital, Urmia, Iran. In the initial physical examination, hydrocephalus, eye abnormalities, cleft lip, and cleft palate were observed. Unfortunately, the newborn expired two days after birth.

Clinical discussion

The main characteristics of this syndrome are mental retardation, anophthalmia or microphthalmia, abnormal nostrils, and disorders of the central nervous system.

Conclusion

Early diagnosis during pregnancy using diagnostic methods and proper management of this abnormality should be strongly emphasized to prevent further harm to the newborn and the mother with this syndrome.

Highlights
Aseptic non-union fracture of ulna but union fracture of radius following internal fixation procedure: A case report
Authors: Ismiarto Yoyos Dias , Prasetiyo Gregorius Thomas , Putra Edo Pramana , Prasetya Wemdi Priya
Published: September 2022

Abstract

Introduction and importance

Fractures of the forearm typically can be managed by surgical fixation with high success rate. However, some proportion of patients may show post-operative complications, including non-union fracture.

Case presentation

We report a unique case of ulnar non-union but union fracture of radius which concurrently happened in a woman presenting 1 year after open reduction internal fixation (ORIF) procedure. The patient did not have any complaints but there is some swelling in the ulnar region. Intraoperative findings revealed a darkening tissue near the ulnar implants with the histopathological analysis showed infiltration of lymphocytes, polymorphonuclear (PMN) cells, histiocytes, and some giant cells. Culture from the non-union tissue of ulna also showed no growth of microorganism which suggest an aseptic case of non-union.

Clinical discussion

This case was successfully managed by performing re-ORIF along with bone grafting. At the follow-up visits two months and six months after surgery, there is no complaints or complications observed and union of ulna was already achieved.

Conclusions

We suggest that although rare, non-union fractures of ulna and union fractures of radius may happened concurrently in the same patient. Non-union fracture of forearm can be successfully managed by internal fixation with bone grafting.

Highlights
Diagnostic performance of the six-item cognitive impairment test as first-step screening for dementia: a meta-analysis
Authors: Park Seong-Hi
Published: September 2022

Objective:

Dementia, a slowly progressive disease, is poorly diagnosed. One reason is that it is difficult to use the screening tools. The six-item cognitive impairment test (6-CIT) is brief, with six items, and has a confirmed scoring system that can easily be used by an average individual. This review aimed to analyze the predictive validity of the 6-CIT including comparisons with other tools such as the Mini-Mental State Examination (MMSE).

Methods:

Literature searches were performed on the MEDLINE, EMBASE, CINAHL, and PsycArticles using the dementia and 6-CITas keywords. The Quality Assessment of Diagnostic Accuracy Studies-2 was applied to assess the risk of bias.

Results:

Seven studies with 6,831 participants that met the selection criteria were included. The pooled sensitivity of the 6-CIT analyzed in seven studies was 0.82 (95% CI 0.73–0.89), the pooled specificity was 0.87, and the summary receiver operating characteristic (sROC) curve was 0.90 (SE = 0.04). The diagnostic performance of the 6-CIT and MMSE was compared in three studies. The pooled sensitivity of the 6-CIT was 0.85, the pooled specificity was 0.91, and the sROC curve was 0.91, whereas the MMSE values were 0.70, 0.93, and 0.68, respectively.

Conclusion:

This review presents evidence that the 6-CIT has excellent dementia screening performance and could be used as a potential alternative to the MMSE. The 6-CIT may provide an opportunity for early detection of dementia.
Policing Interfaith Marriages: Constitutional Infidelity of the Love Jihad Ordinance
Authors: Sonkar Sumit
Published: September 2022

The Indian Constitution guarantees that individuals have the freedom to choose their partners free from state interference. However, the Uttar Pradesh Vidhi Virudh Dharma Samparivartan Pratishedh Adhyadesh, 2020 (Uttar Pradesh Prohibition of Unlawful Religious Conversion Law, 2020) prohibits religious conversion to the extent that it assumes all conversions are illegal, which may have a negative impact on interfaith marriages involving consenting adults. The author argues that the provisions of the Uttar Pradesh Ordinance forbidding religious conversion are vague and inadequate for addressing forceful or unlawful conversion for marriages, do not demonstrate any reasonable relation to the object of the legislation, and are constitutionally repugnant. The author concludes that by conferring police powers on state agencies to intervene in interfaith marriages, the Uttar Pradesh Ordinance erodes citizens’ freedom to choose a partner and their individual autonomy, privacy, and personal liberty—rights that are enshrined under India’s constitution.
Placing the 2020 Belarusian Protests in Historical Context: Political Attitudes and Participation during Lukashenko’s Presidency
Authors: Hansen Michael A. , Ford Nicolè M.
Published: September 2022

In the wake of the most recent protests in Belarus following the 2020 Presidential Election, it is useful to explore patterns of satisfaction with the political system, confidence in political institutions, and political participation at different points in time during President Lukashenko’s rule. We utilize Wave 3 of the World Values Study (WVS) and Wave 7 of the Joint European Values Study (EVS)/WVS to (1) analyze whether citizens’ dissatisfaction with the Belarusian government differed between 1996 and 2018, and (2) whether there was a change in political participation during that period. Responses over time suggest that satisfaction with the government and confidence in institutions was not lower in 2018 than it had been in 1996. However, as we discuss in the article, this may be an artifact of authoritarian consolidation and concern/fears about revealing preferences. We also find that the willingness to engage in protests remained more or less the same between these two time periods, especially among those dissatisfied with the political system. These results suggest that once highly dissatisfied citizens took to the streets in 2020, a number of internal and external factors might have triggered a bandwagon effect that pushed other citizens to also join the demonstrations.
THE MEANING OF THE WAVE IN THE FINAL SCENE OF EURIPIDES’IPHIGENIA TAURICA
Authors: Duranti Marco
Published: September 2022

This article offers a new interpretation of the wave which, in the finale of Euripides’Iphigenia Taurica, prevents the Greek ship from leaving the Taurian land, thus making it necessary for the goddess Athena to intervene. My contention is that the wave is the predictable consequence of the sacrilege which the Greeks are committing by stealing Artemis’ cult statue from the Taurian temple. Therefore, we can detect inITthe same religious offence–punishment–compensation structure that can be found in Aeschylus’Eumenides. However, unlike in Aeschylus’ tragedy, inITAthena's final decrees compensate only the goddess Artemis and not the human characters: after deeply suffering as instruments of the divine will, not even in the future will they be allowed to fulfil their desires. Thus, we may say that a supernatural ‘wave’ prevents humans from leaving in accordance with their will.
Impact of in-furrow fertilizers on winter wheat grain yield and mineral concentration
Authors: Finch B. A. , Reed V. T. , Williams J. E. , Sharry R. L. , Arnall D. B.
Published: September 2022

Placement of fertilizer in the seed furrow to increase nutrient availability is a common practice in row-crop production. While in-furrow application of fertilizer is widely utilized in the production of winter wheat (Triticum aestivum L.), there is a lack of work evaluating new formulations and nutrient combinations that are available. The objective of this study was to quantify the effects of in-furrow fertilizer products and combinations of products on winter wheat grain yield, nitrogen and mineral concentrations. Trials were conducted across five site-years in central Oklahoma using 11 fertilizer formulations placed in-furrow at the time of planting. In locations that soil test phosphorus (STP) levels or potassium were above sufficiency, the use of in-furrow fertilizers did not improve yield over the control. Inconsistency of response was noted at locations where STP levels were below the critical threshold. While one location showed no response to the addition of P regardless of source, two other locations had significant yield responses from three or more P-containing fertilizers. The addition of both sulphur and zinc resulted in increased yield over the base product at one low STP location. Nutrient concentrations were also influenced in nutrient-limited soils; however, no trends in response were present. Based upon the results of this study, the application of in-furrow fertilizer has the potential to increase winter wheat grain yield and nutrient concentration, when soil nutrients are limiting. As expected the addition of fertilizer when soil test levels are at or above a sufficiency did not increase grain yield.
Should linguistics be applied and, if so, how?
Authors: White Lydia
Published: September 2022

Research on second language (L2) acquisition in the generative tradition (GenSLA) addresses the nature of interlanguage competence, examining the roles of Universal Grammar, the mother tongue and the input in shaping the acquisition, representation and use of second languages. This field is sometimes dismissed by applied linguists as irrelevant because it does not provide direct applications for language teaching. However, the assumption that theories must have applications involves a fundamental misconception: linguistic theories explore the nature of grammar; GenSLA theories explore the nature of language learning. No such theory entails that language must be taught in a particular way. Nevertheless, potential applications can be identified: examples are presented that describe aspects of language that do not need to be taught, properties that might benefit from instruction, and cases where textbooks provide inadequate information. I argue that linguistic theory and GenSLA theory have more to offer in terms of considering what aspects of language might or might not be taught rather than how languages should be taught.
Is music on the wane? A small mixed methods study exploring musical learning in the school reception class in the East of England
Authors: Digby Julie
Published: September 2022

This small-scale mixed methods study sought to explore the nature of the musical learning in the Reception year. Research data from the questionnaires (n = 39) provide some evidence that little has changed over the last two decades in some aspects of the music provision for children aged 4 and 5 years. However, interviews with eight Reception teachers revealed some unexpected findings on account of some contemporary barriers. Qualitative data suggest that children’s entitlement to develop their innate musicality within the Foundation stage curriculum may be at risk, as some teachers find the challenges of ‘fitting it all’ is difficult to accomplish.
Effect of cigarette smoke condensate on mouse embryo development and expression of pluripotency and apoptotic genes in vitro
Authors: Banafshi Omid , Mohammadi Ebrahim , Abdi Mohammad , Ghaderi Ebrahim , Assadollahi Vahideh , Khadem Erfan Mohammad Bagher , Rezaei Mohammad Jafar , Fathi Fardin
Published: September 2022

The aim of the present study was to investigate the effect of cigarette smoke condensate (CSC) on in vitro development of mouse embryos. In total 3000 NMRI mice 2PN embryos were divided into six groups (n = 500). The test group was exposed to 20, 40, 80, 160 or 320 μg/ml of CSC. In the control group, CSC was not added to the culture medium during the development of 2PN embryos. The effects of 20 and 80 μg/ml of CSC on genes involved in pluripotency and apoptosis, and also, the aryl hydrocarbon receptor gene was assessed in the blastocysts. Our results showed that CSC had an adverse effect on the viability of mouse embryos at the concentrations of 80, 160 and 320 μg/ml compared with the control group (P < 0.05). In contrast, it had positive effects on the viability of mouse embryos at the concentrations of 20 and 40 μg/ml compared with the control group (P < 0.05). The 20 and 80 μg/ml concentrations of CSC increased the expression of pluripotency, apoptotic, and aryl hydrocarbon receptor genes in the blastocyst embryo stage compared with the control group (P < 0.05). It can be concluded that concentrations higher than 40 μg/ml of CSC have an adverse effect on mouse embryo development in the preimplantation stages. Also, 20 and 80 μg/ml concentrations of CSC have a significant effect on the expression of pluripotency, apoptotic, and the aryl hydrocarbon receptor genes in the blastocyst embryo stage compared with the control group.
Stromatolite photomorphogenesis: lighting up their shape
Authors: Ojakangas Gregory W. , Awramik Stanley M. , Storrie-Lombardi Michael C.
Published: September 2022

Most stromatolites are built by photosynthetic organisms, for which sunlight is a driving factor. We examine stromatolite morphogenesis with modelling that incorporates the growth rate of cyanobacteria (the dominant stromatolite-builder today, and presumably through much of the past), as a function of the amount of irradiance received. This function is known to be non-monotonic, with a maximum beyond which growth rate decreases. We define optimal irradiance as that which generates maximal growth, and we find fundamentally different morphologies are predicted under suboptimal and superoptimal direct irradiance. When the direct irradiance is suboptimal, narrow widely spaced columns are predicted, with sharp apices resembling conical stromatolites. When it is superoptimal, broad, closely spaced, flattened domical forms appear. Such disparate morphologies could also occur as a result of other vector-flux-dependent growth factors (e.g. currents). A differential equation is developed that describes the rate of change of the radius of curvatureRat the apex of a growing stromatolite column, allowing simple simulations of the time evolution ofRfor model stromatolites. The termphotomorphismis proposed to describe the disparate morphologies that may arise due to the effects described here (andphotomorphogenesisas the process). Model results appear to explain, at least qualitatively, the morphologies of a number of stromatolites. If stromatolites are encountered on Mars, our model suggests that they are quite likely to be conical in form, owing to likely suboptimal irradiance since Mars has always received less irradiance than Earth.
The Rights of Nature as a Bridge between Land-Ownership Regimes: The Potential of Institutionalized Interplay in Post-Colonial Societies
Authors: Putzer Alex , Lambooy Tineke , Breemer Ignace , Rietveld Aafje
Published: September 2022

Despite the growing prominence and use of Rights of Nature (RoN), doubts remain as to their tangible effect on environmental protection efforts. By analyzing two initiatives in post-colonial societies, we argue that they do influence the creation of institutionalized bridges between differing land-ownership regimes. Applying the methodology of inter-legality, we examine the Ecuadorian Constitution of 2008 and the Ugandan National Environment Act 2019. We identify five normative spheres that influence land-ownership regimes. We find that the established Ecuadorian RoN have an institutionalized effect on the nation's legal system. Their more recently established Ugandan counterpart shows potential to develop in the same direction.
Convolutional Neural Networks as a Tool for Raman Spectral Mineral Classification Under Low Signal, Dusty Mars Conditions
Authors: Berlanga Genesis , Williams Quentin , Temiquel Nathan
Published: September 2022

NASA's Mars 2020 and ESA's ExoMars will collect Raman measurements in dusty field conditions obscuring underlying rocks. This presents a challenge for remote Raman measurements at distances where mechanical or ablative sample cleaning is not straightforward. Historically, probing broad lithostratigraphic suites has been thwarted by the need for pristine targets and high‐quality spectra. We provide a means of identifying Raman spectra of common rock‐forming silicate, carbonate, and sulfate minerals under low signal‐to‐noise‐ratios, Mars‐like conditions using a convolutional neural network (CNN). The CNN was trained on the Machine Learning Raman Open Data set data set with 500,000+ Raman spectra of hand samples/powder mixtures (5,000+ spectra/mineral class). Diversity in sample microtopography, orientation, and crystallinity simulated varying laser focuses and spectral quality, and no traditional spectral preprocessing such as cosmic ray or baseline removal was employed. The CNN identified low‐intensity Raman scatterers (micas and amphiboles), mixed minerals, and distinguished between mineral endmembers with +99% success. We present among the first known implementations of “big data” machine learning using varied, high‐volume Raman spectral datasets. The pattern recognition abilities of CNNs can facilitate scientist Raman spectral interpretation on Earth and autonomous rover decision‐making on planets like Mars; increasing scientific yield, correcting human classification errors, reducing the need for thorough target dust removal during evaluative measurements, and streamlining the data communications pipeline—saving time and resources. This study examines an end‐to‐end development process for creating a deep learning algorithm sensitive to varieties of Raman spectra and provides guidelines for CNN model development at the interface of Raman spectroscopy, deep learning, and planetary science.
Scale‐Dependent Kurtosis of Magnetic Field Fluctuations in the Solar Wind: A Multi‐Scale Study With Cluster 2003–2015
Authors: Roberts O. W. , Alexandrova O. , Sorriso‐Valvo L. , Vörös Z. , Nakamura R. , Fischer D. , Varsani A. , Escoubet C. Philippe , Volwerk M. , Canu P. , Lion S. , Yearby K.
Published: September 2022

During the lifetime of the Cluster mission, the inter‐spacecraft distances in the solar wind have changed from the large, fluid, scales (∼104 km), down to the scales of protons (∼102 km). As part of the guest investigator campaign, the mission achieved a formation where a pair of spacecraft were separated by ∼7 km. The small distances and the exceptional sensitivity of the search coil magnetometer provide an excellent data set for studying solar wind turbulence at electron scales. In this study, we investigate the intermittency of the magnetic field fluctuations in the slow solar wind. Using 20 time intervals with different constellation orientations of Cluster we cover spatial scales between 7 and 104 km. We compare time‐lagged increments from a single spacecraft with spatially lagged increments using multiple spacecraft. As the turbulent cascade proceeds to smaller scales in the inertial range, the deviation from Gaussian statistics is observed to increase in both temporal and spatial increments in the components transverse to the mean field direction. At ion scales, there is a maximum of kurtosis, and at sub‐ion scales, the fluctuations are only weakly non‐Gaussian. In the compressive component the deviation from Gaussian statistics is variable: it may increase throughout the inertial and sub‐ion ranges, but also, it may have a maximum at magnetohydrodynamic scales associated with large scale magnetic holes. The observations show differences in kurtosis of time and space increments when the spacecraft pairs are transverse to the flow, indicating its spatial anisotropy.
Spatio‐Temporal Variability of Suspended Sediment Fronts (SSFs) on the Inner Shelf of the East China Sea: The Contribution of Multiple Factors
Authors: Du Yunfei , Zhang Jicai , Wei Zilu , Yin Wenbin , Wu Hui , Yuan Yeping , Wang Ya Ping
Published: September 2022

Modulated by a host of complex processes, suspended sediment fronts (SSFs) on the inner shelf of the East China Sea persist strongly and vary notably. Using hourly suspended sediment concentration data collected by the Geostationary Ocean Color Imager over the period 2011–2021, a gradient‐based edge detection algorithm was implemented to extract SSFs; the frontal probability (FP) and seasonal and interannual variability were identified and interpreted. Pronounced frontal activity is principally confined to the nearshore waters within the 60‐m isobaths and decreases with increasing offshore distance. Frontogenesis is mainly determined by the bottom topography and tide‐induced mixing. Empirical orthogonal function decompositions reveal that the seasonal cycle dominates the variability of SSFs, which responds to the cycles of winds and related changes in coastal currents and upwelling. The highest FPs are identified in winter when wind‐induced suspended sediment transport and resuspension reach their annual maxima. In summer, stratification and the intrusion of Kuroshio subsurface water are not conducive to frontogenesis. Furthermore, the discharge of the Yangtze River has a certain influence on the frontal variability in the waters around the Zhoushan Archipelago. Notably, the interannual variability of SSFs is modulated by the El Niño‐Southern Oscillation. These findings, based on a comprehensive dataset of SSFs over 10 years, can usefully inform the studies of marine pollutant transport, sedimentary dynamics, fisheries, and wider ecological processes in the study area.
Radar Observed Structural Features and Evolution Mechanism of a Squall Line‐Like Rainband in a Linear Mesoscale Convective System
Authors: Kang Yanzhen , Chang Jun , Peng Xindong , Liang Xiaogang , Wang Shigong
Published: September 2022

In this study, multi‐source data, especially weather radar data, were used in the analysis of structural features and evolution of a squall line‐like rainband (SLLR) of a linear mesoscale convective system (MCS) in the eastern slope of the Taihang Mountains on 12 and 13 August 2018 and reached the following conclusions: (a) The SLLR, located in north of the linear MCS, exhibited a significant horizontal gradient of reflectivity and large vertical extension. The front‐to‐rear flow that appeared between the surface and the stratosphere was lifted upward immediately in front of a cold pool that formed rearward‐tilting updrafts. (b) As the SLLR passed over, surface meteorological quantities changed drastically, coinciding with the heavy precipitation. (c) The SLLR, when propagating northeastward, showed a complex convective development of sequential intensification, weakening, and re‐intensification within a 2.5‐hr period. The temporal intensification was related not only to the development of a low‐level rear‐inflow jet but also to the dynamic interaction between the vertical environmental wind shear and the cold pool. The lifted rear‐inflow jet, which formed over a vertically stacked horizontal vorticity couplet behind the leading edge, provides a reasonable explanation for the intensification of the SLLR, resulting in the reduction of the cold pool circulation and enhancement of the convective updraft. Topographic forcing might play a crucial role in the re‐intensification of the SLLR, which suggests the importance of the cold pool and topography in structural features and convective evolution of the squall line‐like rain bands.
Future Food Security in Africa Under Climate Change
Authors: Beltran‐Peña Areidy , D’Odorico Paolo
Published: September 2022

Africa is a major hotspot of food insecurity with climate change and population growth as major drivers. Irrigation expansion can sustainably increase agricultural productivity and adapt crops to climate change. We use agro‐hydrological, climate, and socio‐economic models to quantify crop production with irrigation expansion and perform food security analyses for different adaptation scenarios for African countries under baseline and 3°C warmer climate conditions. We find that under a 3°C warmer climate the total food production in Africa can only feed 1.35 billion people, when the continent's population is expected to reach 3.5 billion, leaving a food deficit equivalent to 2.15 billion people. Increasing agricultural productivity with irrigation alone will not be enough to achieve food self‐sufficiency. Therefore, future food demand will likely be met by other means such as cropland expansion or greater reliance on imports which would further expose African populations to uncertainty from the volatility in global food prices.
A Late Cenozoic Kinematic Model for Fault Motion Within Greater Cascadia
Authors: Wilson Douglas S. , McCrory Patricia A.
Published: September 2022

Widely accepted tectonic reconstructions indicate at least 100 km of coast‐parallel northwestward translation of the Sierra Nevada block of California and 15–20° clockwise rotation of most of Oregon since the current phase of Basin and Range extension began ∼17 Ma. These reconstructions require at least 100 km of convergence between the central Coast Range of Oregon and rigid North America in mainland British Columbia, yet there is little discussion of how such convergence might be distributed. This study offers a kinematic model of the distribution of such deformation, constrained by geodesy, paleomagnetism, and fault offsets in Nevada, California and Oregon. The model includes differential rotation across the thrust faults of the Yakima fold and thrust belt (YFTB), compressive right‐lateral faulting in the Washington Cascade Range, substantial thrust faulting within the Puget Lowland, and oroclinal bending and doming in the Olympic Mountains. Shortening across YTFB along 120°W longitude is modeled as 47 km, across Puget Lowland at 123°W (Olympia‐Bellingham) is 94 km, and total shortening between the central Oregon Coast Range and northern Washington (Corvallis‐Bellingham) is 125 km. Current motion of the coastal regions above the Cascadia subduction zone results from both permanent deformation of the continent and elastic coupling to the subducting plate. Permanent deformation in the model is based on extrapolating geodesy from east of 120°W or south of 40°N, indicating a very uniform convergence velocity with the Juan de Fuca plate for northernmost California and Oregon near 31 mm/yr at N61°E.
Inter‐Calibration Between the Electron Flux Measurements of FengYun‐3B and Van Allen Probe‐A Based on Electron Phase Space Density Conjunctions
Authors: Zhu Changbo , Zhang Xianguo , Zhang Hui , Li Xingji , Zong Weiguo , Li Jiawei , Huang Cong , Zhang Chenxuan , Xiang Zheng , Chang Zheng , Wang Chunqin , Zhang Shenyi , Sun Yueqiang , Zhang Xiaoxin
Published: September 2022

Cross‐satellite calibration of energetic particle fluxes is essential to understanding Earth's radiation belt dynamics and modeling the space radiation environment. Using the method of comparing phase space density (PSD) conjunctions in the same set of phase space coordinates, we perform a cross‐satellite calibration of energetic electron fluxes measured by the Low Earth Orbit Chinese FengYun‐3B satellite (FY‐3B) and the near‐equatorial Highly Eccentric Orbit Van Allen Probe‐A (VAP‐A), respectively. VAP‐A provides pitch angle resolved electron (directional) differential fluxes while FY‐3B provides omnidirectional electron differential fluxes. Before calculating the PSDs from FY‐3B high energy electron detector (HEED), a method is introduced to estimate the local pitch angle of FY‐3B based on the installation direction information of HEED and the T89c magnetic field model. We calculate the calibration factors by using the PSD conjunctions inferred from the two satellites for three fixed sets of (μ, K, L*) during the geomagnetic storm times. The calibration factors range from 0.76 to 0.86 varying with fixed sets of (μ, K, L*), which indicates that the electron differential fluxes from FY‐3B are higher than that from VAP‐A. During geomagnetic quiet times, we perform calibration by using independent Gaussian fitting analysis of the number of points with the unaveraged PSDs of FY‐3B and VAP‐A for three fixed sets of (μ, K, L*), with the corresponding calibration factors of 0.78, 0.72, and 0.46. The calibrated electron differential fluxes of FY‐3B measured at the high magnetic latitudes, can be used in the future modeling of the radiation belt electron dynamics.
Assessment of Turbulent Mixing Associated With Eddy‐Wave Coupling Based on Autonomous Observations From the Arctic Canada Basin
Authors: Son E. Y. , Kawaguchi Y. , Cole S. T. , Toole J. M. , Ha H. K.
Published: September 2022

Interaction between mesoscale eddies and near‐inertial internal waves can contribute to enhanced turbulence mixing but quantitative knowledge from in situ observations is still lacking. This study reveals how eddy/near‐inertial wave interactions (ENIs) can affect the variability of turbulent mixing in the ice‐covered Canada Basin of the Arctic Ocean. We use data from five Ice‐Tethered Profiler with Velocity (ITP‐V) systems that autonomously obtained vertical profiles of horizontal velocity as well as temperature and salinity, which enabled quantification of ENI‐caused turbulent mixing using a fine‐scale parameterization. From the ITP‐V observations in 2013–2015, 67 anticyclones were detected, of which 90% had a deep core at 150–250 m depth. The remaining eddies had a shallow core, typically embedded in the Pacific Summer Water (PSW). Just over one third of the eddies showed evidence of ENI with enhanced near‐inertial internal wave amplitude (NIW) near the eddy cores. For these ENI cases, the parameterized turbulence dissipation rate was O (10−10–10−8 W kg−1), the larger estimates being several orders of magnitude greater than the background level. For the deep eddies, the ENI process can largely be accounted for by the classical theory, NIWs are trapped inside the negative relative vorticity core of anticyclones. For one shallow eddy, the NIW signal was greatest below the core. We postulate that a vertically elongated system of NIWs cannot be constrained vertically within such small‐cored eddies. It is also interpreted that the wave enhancement below the core was supported by the isopycnal slope near the PSW through its geostrophic shear.