bluuebunny/crossref_metadata_2025_split huggingface dataset:
Transnational regimes of labor and statelessness: Intersections of citizenship regimes and local norms in East and Southeast Asia
Authors: Ishii Sari K. 
Published: March 2020

AbstractThis article offers a review of the literature on transnational labor regimes and statelessness to pursue further theorization from East and Southeast Asian contexts. The main focus is on how local norms (local sense of belonging, local moral code, and local hierarchies) are entangled with national‐level citizenship regimes to legitimate the discrimination of certain people to be statelessness and secure low‐wage migrant workers for thenew global labor regime. First, traditional literature on citizenship and statelessness was reviewed; binary theoretical frameworks (including citizens/excluding non‐citizens) based on political recognition were indicated as the main limitations. Second, recent theories arguing for an intersection between national citizenship regimes and anew global labor regimewere reviewed. Third, recent theories that illuminate the importance of local contexts in determining citizens' rights were reviewed based on formal exclusion and informal inclusion as well as formal inclusion and informal exclusion. Finally, it was concluded that further theorization is needed on how citizenship regimes and local norms intersect to produce statelessness, securing low‐wage migrant workers for the global labor regime through theglobal assemblages approach. Through the paper, East and Southeast Asia were illuminated as potentially fruitful research sites for further theorization on the topic.
Developing teacher content understanding by integrating pH and logarithms concepts
Authors: Glassmeyer David , Smith Andrew , Gardner Kimberly 
Published: March 2020

AbstractLogarithms are notorious for being a difficult concept to understand and teach. Research suggests that learners can be supported in understanding logarithms by making connections between mathematics and science concepts such as pH. This study investigated how an integrated chemistry and mathematics lesson impacted 29 teachers’ understanding of the logarithmic relationship and pH. Pre‐ and post‐test data indicated 23 teachers improved their understanding of logarithms and 28 improved their understanding of pH, suggesting that teacher educators in both science and mathematics context can use this approach to foster better understanding with their teachers and ultimately school students. Our analysis also identified professional development components and teacher characteristics associated with gains in understanding of pH and logarithms, which mathematics and science teacher educators can use to strategically adapt and implement the lesson within other teacher education settings.
“Racial Classification Is Meaningless”: Why Racial Classification in South Africa Is Unintelligible for Some Eritrean Refugees
Authors: Tewolde Amanuel Isak 
Published: March 2020

ObjectiveThe article's objective is to explore how Eritrean refugees self‐identified in the face of racial classification in South Africa.MethodsA qualitative approach and one‐on‐one interviews were conducted with participants.ResultsAs part of a larger study that resulted in diverse themes, this article discusses Eritrean refugees who interpreted the South African racial classification system as meaningless.ConclusionThe rejection of the host country's racial classification scheme emerged among some first‐generation Eritrean refugees who did not have racial self‐awareness in Eritrea and who were strongly embedded in their ethnic communities and enclaves in urban South Africa, isolated from the host community. Furthermore, some refugees' rejection of the racial system in South Africa reinforces some South African nationals' call for the dismantling of the apartheid‐inherited classification.
ZEITLUPE facilitates the rhythmic movements of Nicotiana attenuata flowers
Authors: Cortés Llorca Lucas , Li Ran , Yon Felipe , Schäfer Martin , Halitschke Rayko , Robert Christelle A.M. , Kim Sang‐Gyu , Baldwin Ian T. 
Published: March 2020

SUMMARYCircadian organ movements are ubiquitous in plants. These rhythmic outputs are thought to be regulated by the circadian clock and auxin signalling, but the underlying mechanisms have not been clarified. Flowers of Nicotiana attenuata change their orientation during the daytime through a 140° arc to balance the need for pollinators and the protection of their reproductive organs. This rhythmic trait is under the control of the circadian clock and results from bending and re‐straightening movements of the pedicel, stems that connect flowers to the inflorescence. Using an explant system that allowed pedicel growth and curvature responses to be characterized with high spatial and temporal resolution, we demonstrated that this movement is organ autonomous and mediated by auxin. Changes in the growth curvature of the pedicel are accompanied by an auxin gradient and dorsiventral asymmetry in auxin‐dependent transcriptional responses; application of auxin transport inhibitors influenced the normal movements of this organ. Silencing the expression of the circadian clock component ZEITLUPE (ZTL) arrested changes in the growth curvature of the pedicel and altered auxin signalling and responses. IAA19‐like, an Aux/IAA transcriptional repressor that is circadian regulated and differentially expressed between opposite tissues of the pedicel, and therefore possibly involved in the regulation of changes in organ curvature, physically interacted with ZTL. Together, these results are consistent with a direct link between the circadian clock and the auxin signalling pathway in the regulation of this rhythmic floral movement.
Inactivation of Plasmodium falciparum in whole blood using the amustaline and glutathione pathogen reduction technology
Authors: Sow Cissé , Laughhunn Andrew , Girard Yvette A. , Lanteri Marion C. , Amar El Dusouqui Soraya , Stassinopoulos Adonis , Grellier Philippe 
Published: March 2020

BACKGROUNDRisk of transfusion‐transmitted (TT) malaria is mainly associated with whole blood (WB) or red blood cell (RBC) transfusion. Risk mitigation relies mostly on donor deferral while a limited number of countries perform blood testing, both negatively impacting blood availability. This study investigated the efficacy of the pathogen reduction system using amustaline and glutathione (GSH) to inactivate Plasmodium falciparum in WB.STUDY DESIGN AND METHODSWB units were spiked with ring stage P. falciparum infected RBCs. Parasite loads were measured in samples at time of infection, after 24 hours at room temperature (RT), and after a 24‐hour incubation at RT post‐treatment with 0.2 mM amustaline and 2 mM GSH. Serial 10‐fold dilutions of the samples were inoculated to RBC cultures and maintained up to 4 weeks. Parasitemia was quantified by cytometry.RESULTSThe P. falciparum viability assay has a limit of detection of a single live parasite per sample. Input parasite titer was >5.7 log10 TCID50 per mL. A 24‐hour incubation at RT paused parasite development in controls, but they retained viability and infectivity when tested in culture. In contrast, no infectious parasites were detected in the amustaline/GSH‐treated sample after 4 weeks of culture.CONCLUSIONA robust level of P. falciparum inactivation was achieved in WB using amustaline/GSH treatment. Parasite log reduction was >5.7 log10 TCID50 per mL. Development of such a pathogen reduction system may provide an opportunity to reduce the risk of TT malaria and improve blood availability.
Frequency of CD36 deficiency in Thais analyzed by quantification of CD36 on cell surfaces and in plasma
Authors: Phuangtham Roongaroon , Santoso Sentot , Leelayuwat Chanvit , Komvilaisak Patcharee , Ding Haoqiang , Romphruk Amornrat V. 
Published: March 2020

BACKGROUNDAnti‐CD36s, developing after transfusion or during pregnancy, play an important role in immune‐mediated bleeding disorders among Asian populations. Currently, little is known about the clinical relevance of anti‐CD36. Here, we aimed to determine the frequency of CD36 deficiency in Thais by analyzing CD36 expression on cell surfaces and in plasma.STUDY DESIGN AND METHODSThe expression and deficiency of CD36 on platelets and monocytes were determined by flow cytometry. Mutations in the CD36 gene were analyzed by nucleotide sequencing. Soluble CD36 (sCD36) in plasma was quantified with enzyme‐linked immunosorbent assay.RESULTSFifteen of 700 blood donors (2.14%) were identified as CD36 deficient. The frequencies of Type I and II CD36 deficiency were 0.43% and 1.71%, respectively. Type I individuals exhibited c.1163A > T, c.429 + 4insG, and c.1156C > T. Type II individuals exhibited c.879 T > C, c.329‐330delAC, c.818 + 108delAACT, c.1125 + 13C > A, and c.1163A > T. CD36 on donor platelets (n = 685) showed a wide distribution of expression levels (mean fluorescence intensity, 16.71 ± 8.68). In the normal phenotype (n = 14), sCD36 concentration was 58.84 ± 11.68 ng/mL, which was significantly correlated with platelet CD36 expression (r2= 0.8551). In Type II–deficient individuals (n = 6), a similar sCD36 concentration was detected (53.67 ± 8.17 ng/mL). However, sCD36 could not be detected in Type I individuals (n = 3).CONCLUSIONCD36 Type I deficiency was found, indicating the potential for immune‐mediated platelet disorders in Thais. However, the underlying mutations differed from those reported in Japan and China. Interestingly, sCD36 could not be detected in plasma of Type I–deficient individuals. This finding may lead to the use of plasma to identify individuals at risk and to allow screening of large cohorts.
The effects of sex, body length, and different habitats on the serum protein electrophoresis of the broad‐snouted caiman (Caiman latirostris)
Authors: Fonseca Leandro A. , Dornelas Lorraine R. S. M. , Orozco Andres M. O. , Souto Pollyanna C. , Bento Lucas D. , Nóbrega Yhuri C. , Santos Marcelo R. D. , Carvalho Filho Wilson P. , Ermita Pedro A. N. , Girardi Fabricia M. 
Published: March 2020

AbstractBackgroundKnowledge of mammalian inflammatory responses is vast; however, many aspects of the inflammatory response in non‐mammalian vertebrates, such as reptiles, remain unclear, including those regarding acute‐phase proteins (APPs). Recent studies have focused on the use of serum protein electrophoresis (SPE) to assess inflammatory responses in the broad‐snouted caiman (Caiman latirostris) and other reptiles.ObjectivesThe purpose of this study was to examine the effects of sex, body length, and different habitats on SPE patterns in C latirostris using sodium dodecyl sulfate‐polyacrylamide gel electrophoresis (SDS‐PAGE).MethodsA total of 40 animals of both sexes and varying body lengths were collected; of these, 23 were free‐living in an industrial complex (site 1), and 17 were captive on a rural property (site 2). Sodium dodecyl sulfate‐polyacrylamide gel electrophoresis was performed to fractionate different serum protein constituents.ResultsSex affected protein levels, with females showing higher serum levels of total protein, as well as the 90‐, 66‐, and 58‐kDa proteins compared with males. Similarly, body length affected protein levels, with male adults >1.70 m in length showing the lowest serum levels of 152‐, 58‐, 54‐, and 27‐kDa proteins of all other animals. Finally, habitat affected protein levels, with animals at site 1 showing higher serum levels of 152‐ and 41‐kDa proteins compared with those at site 2.ConclusionsThis preliminary study was the first to evaluate the SPE of C latirostris using SDS‐PAGE. Further studies to identify the proteins in each band with more specific and sensitive techniques (eg, mass spectrometry) should be conducted to elucidate the standard of APPs in reptiles better.
Impact of wind on copper footprints in a large river‐connected lake
Authors: Yuan Weihao , Wang Hua , Fan Lili , Deng Yanqing , Zeng Yichuan 
Published: March 2020

AbstractIn this study, a particle‐tracking model was used to simulate the Cu footprints in Poyang Lake under the dual action of complex wind field and lake flow patterns. When ignoring the wind field, the results showed that the gravity flow and top‐lifted flow both drove Cu particles to move from south to north, and the backward flow slowed down the velocity of Cu particles, but did not affect the final trend. When considering the wind field, wind‐driven currents had an effect on the horizontal lake flow patterns. Under the influence of wind‐driven current, the top‐lifted flow was the most vulnerable, the backward flow ranks the second and the gravity flow ranks the third. The results demonstrated the importance of the effect of wind on lake circulation and mixing. Better knowledge on heavy metal footprints in large river‐connected lake was provided to guide the future water management.
Direct Numerical Simulations of Horizontally Oblique Flows Past Three-Dimensional Circular Cylinder Near a Plane Boundary
Authors: Ji Chunning , Zhang Zhimeng , Xu Dong , Srinil Narakorn 
Published: March 2020

Abstract
Understanding hydrodynamics of a free-spanning pipeline subjected to omni-directional flows is important to engineering design. In this study, horizontally oblique flows past a three-dimensional circular cylinder in the vicinity of a plane boundary are numerically investigated using direct numerical simulations. Parametric studies are carried out at the normal Reynolds number of 500, a fixed gap-to-diameter ratio of 0.8 and five flow inclination angles (α) ranging from 0 deg to 60 deg with an increment of 15 deg. Two distinct vortex-shedding modes are observed: parallel (α ≤ 15 deg) and oblique (α ≥ 30 deg) vortex shedding. The wake evolution is further divided into two or three stages depending on α. The occurrence of the oblique vortex shedding is accompanied by the base pressure gradient along the cylinder span and the resultant axial flows near the cylinder base. The total hydrodynamic drag and lift force coefficients decrease from being the parallel mode to the oblique mode, owing to the intensified three-dimensionality of wake flows and the phase differences in the spanwise vortex shedding. The independence principle (IP) is found to be valid in predicting hydrodynamic forces and wake patterns when α ≤ 15 deg. This IP might produce unacceptable errors when α &gt; 15 deg. In comparison with the mean drag force, the fluctuating lift force is more sensitive to the inclination angle. The IP validity range is substantially smaller than that in the case of flow past a wall-free cylinder. Such finding would be practically useful for vortex-induced vibration prediction.
Transmission and Reflection Characteristics of Perforated Submerged Single and Multiple Artificial Reef Units
Authors: Lokesha  , Vallam Sundar , Annamalaisamy Sannasiraj Sannasi 
Published: March 2020

Abstract
Submerged breakwaters formed by natural rocks dissipate the incident wave energy. Continuous quarrying of rocks has resulted in its depletion, leading researchers to look for alternate materials for the formation of such barriers. Thus, the concept of artificial reef units has evolved which has been gaining importance owing to the flexibility in molding to any desired shapes and sizes, workability and also due to the fact that it creates a habitable environment to marine flora and fauna. From the hydrodynamic performance perspective, artificial reef units are proven to be more efficient in reducing wave transmission on the lee side (e.g., Southern Caribbean shore of Dominican Republic and Vaan Island, Tuticorin, India). A comprehensive experimental investigation to examine the effect of trench width on hydrodynamic characteristics of the submerged reef system was carried out. The trench width was varied by incorporating single, double, and multiple perforated submerged trapezoidal artificial reef units. The focus of the present study is mainly on the influence of the number of reef units, relative crest width, and relative trench width of the submerged reef system on its transmission and reflection characteristics. The relative trench width was found to be an influential factor on wave transmission past the structure, and the least wave transmission was achieved for the reef configuration with eight units. The details of the experimental investigation, results and discussion are reported in this paper.
Investigation on Friction, Anti-wear, and Extreme Pressure Properties of Different Grades of Polyalphaolefins With Functionalized Multi-walled Carbon Nanotubes as an Additive
Authors: Kumar Homender , Harsha A. P. 
Published: March 2020

Abstract
In the present investigation, the COOH-functionalized multi-walled carbon nanotubes (MWCNTs) having an outer diameter of 20–30 nm and length 1−2 μm were dispersed in four different grades of polyalphaolefins (PAOs; i.e., PAO 4, PAO 6, PAO 40, and PAO 100) at various concentrations (0.025, 0.05, 0.075, 0.10, and 0.15 wt%) to evaluate friction, anti-wear, and extreme pressure properties. The tribological test was conducted as per ASTM standard using four-ball tester. The test results showed that with the addition of MWCNTs, the friction and wear properties of PAOs had been improved significantly as compared to the base oils. It was also observed that MWCNTs exhibited excellent anti-wear properties than friction properties. The possible reasons for the improvement in friction and wear properties are discussed with the aid of various analytical tools.
Compressive Sensing-Based Reconstruction of Lissajous-Like Nodding Lidar Data
Authors: Benson Michael T. , Sathishchandra Harish , Clayton Garrett M. , Andersson Sean B. 
Published: March 2020

Abstract
In this article, a compressive sensing-based reconstruction algorithm is applied to data acquired from a nodding multibeam Lidar system following a Lissajous-like trajectory. Multibeam Lidar systems provide 3D depth information of the environment, but the vertical resolution of these devices may be insufficient in many applications. To mitigate this issue, the Lidar can be nodded to obtain higher vertical resolution at the cost of increased scan time. Using Lissajous-like nodding trajectories allows for the trade-off between scan time and horizontal and vertical resolutions through the choice of scan parameters. These patterns also naturally subsample the imaged area. In this article, a compressive sensing-based reconstruction algorithm is applied to the data collected during a relatively fast and therefore low-resolution Lissajous-like scan. Experiments and simulations show the feasibility of this method and compare the reconstructions to those made using simple nearest-neighbor interpolation.
Human Driver Modeling Based on Analytical Optimal Solutions: Stopping Behaviors at the Intersections
Authors: Han Jihun , Karbowski Dominik , Kim Namdoo , Rousseau Aymeric 
Published: March 2020

Abstract
Safe and energy-efficient driving of connected and automated vehicles (CAVs) must be influenced by human-driven vehicles. Thus, to properly evaluate the energy impacts of CAVs in a simulation framework, a human driver model must capture a wide range of real-world driving behaviors corresponding to the surrounding environment. This paper formulates longitudinal human driving as an optimal control problem with a state constraint imposed by the vehicle in front. Deriving analytically optimal solutions by employing optimal control theory can capture longitudinal human driving behaviors with low computational burden, and adding the state constraint can assist with describing car-following features while anticipating behaviors of the vehicle in front. We also use on-road testing data collected by an instrumented vehicle to validate the proposed human driver model for stop scenarios at intersections. Results show that vehicle stopping trajectories of the proposed model are well matched with those of experimental data.
Spatial Iterative Learning Control for Multi-material Three-Dimensional Structures
Authors: Afkhami Zahra , Pannier Christopher , Aarnoudse Leontine , Hoelzle David , Barton Kira 
Published: March 2020

Abstract
Iterative learning control (ILC) is a powerful technique to regulate repetitive systems. Additive manufacturing falls into this category by nature of its repetitive action in building three-dimensional structures in a layer-by-layer manner. In literature, spatial ILC (SILC) has been used in conjunction with additive processes to regulate single-layer structures with only one class of material. However, SILC has the unexplored potential to regulate additive manufacturing structures with multiple build materials in a three-dimensional fashion. Estimating the appropriate feedforward signal in these structures can be challenging due to iteration varying initial conditions, system parameters, and surface interaction dynamics in different layers of multi-material structures. In this paper, SILC is used as a recursive control strategy to iteratively construct the feedforward signal to improve part quality of 3D structures that consist of at least two materials in a layer-by-layer manner. The system dynamics are approximated by discrete 2D spatial convolution using kernels that incorporate in-layer and layer-to-layer variations. We leverage the existing SILC models in literature and extend them to account for the iteration varying uncertainties in the plant model to capture a more reliable representation of the multi-material additive process. The feasibility of the proposed diagonal framework was demonstrated using simulation results of an electrohydrodynamic jet printing (e-jet) printing process.
Magnetically Actuated Artificial Microswimmers as Mobile Microparticle Manipulators
Authors: Buzhardt Jake , Tallapragada Phanindra 
Published: March 2020

AbstractMicroscale swimming robots have been envisaged for many biomedical applications such as targeted drug delivery, where the microrobot will be expected to navigate in a fluid environment while carrying a payload. We show that such a payload does not have to be physically bound to the swimmer, but may be instead manipulated by the microrobot through hydrodynamic interaction. We consider a magnetically actuated artificial microswimmer, whose locomotion induces a disturbance velocity field in the fluid, which moves a cargo particle in its vicinity. The problem investigated in this paper is therefore one of coupled locomotion-manipulation of two bodies in a fluid. The swimmer is actuated by a uniform, rotating magnetic field of constant strength leading to net motion in the direction perpendicular to the plane of rotation if the frequency associated with the periodic magnetic field is above a critical frequency. Below this critical frequency, the swimmer tumbles in place without net locomotion. Controlled motion of the particle and swimmer is achieved by switching the planes of rotation of the magnetic field and the frequency of the magnetic field above and below the critical frequency. The results of this paper show that microswimmers can be utilized as mobile manipulators of microparticles in a fluid.