bluuebunny/crossref_metadata_2025_split huggingface dataset:
Impact of de novo donor‐specific HLA antibodies on pediatric kidney transplant prognosis in patients with acute declined or stable allograft function
Authors: Fylaktou Asimina , Karava Vasiliki , Vittoraki Angeliki , Zampetoglou Argyroula , Papachristou Marianthi , Antoniadis Nikolaos , Iniotaki Aliki , Mitsioni Andromach , Printza Nikoleta 
Published: January 2022

AbstractBackgroundThis retrospective multicenter long‐term cohort study investigates de novo donor‐specific HLA antibodies (dnDSA) impact on allograft survival in pediatric kidney transplantation (KTx), depending on allograft function at dnDSA detection.MethodsSeventy patients with dnDSA screening in the context of acute allograft dysfunction (AAD) (>50% serum creatinine increase) or routine follow‐up were included during a 20‐year period. Number of dnDSA specificities and HLA total mean fluorescence intensity (MFI‐sum) were collected.ResultsMedian follow‐up time was 8.6 years. Among the 22 dnDSA+ patients, 8 patients presented AAD. Compared with dnDSA− patients, allograft survival was shorter only in dnDSA+/AAD+ patients, regardless of dnDSA detection during the 5‐year post‐transplant period (9 patients) or later (13 patients) (log rank p < .001 and p < .001, respectively). One dnDSA+/AAD−, 7 dnDSA+/AAD+, and 5 dnDSA− patients lost their allograft. Allograft survival was shorter in dnDSA+/AAD+ patients compared with the 16 dnDSA−/AAD+ patients (log rank p < .001) but did not differ between dnDSA+/AAD− and dnDSA−/AAD− patients (log rank p = .157). dnDSA+/AAD+ and dnDSA−/AAD+ patients presented higher risk of allograft failure compared with the other patient groups after adjustment for recipient age at KTx, donor type, and incidence of delayed graft function (HR 11.322, 95% CI 3.094–41.429, p < .001). Concurrent MFI‐sum >10 000 and multiple dnDSA specificities were more significantly associated with AAD, compared with each factor separately (p < .001).ConclusionsIn pediatric KTx, AAD shortens allograft survival in dnDSA+ patients, regardless of dnDSA time detection, and is commonly observed when high MFI‐sum concurs with multiple dnDSA specificities. dnDSA without AAD incidence does not determinately affect allograft survival.
The motivational value of listening during intimate and difficult conversations
Authors: Weinstein Netta , Itzchakov Guy , Legate Nicole 
Published: January 2022

AbstractOutcomes of conversations, including those dealing with controversial, deeply personal, or threatening disclosures, result not only from what is said but also from how listeners receive these messages. This article integrates the motivational framework of self‐determination theory (SDT) and the expanding literature on interpersonal listening to explore the reasons why high‐quality listening is so impactful during these conversations. We describe why high‐quality listening is a specific and distinguishable autonomy‐supportive motivational strategy, and argue that there is much to gain by considering that listening can satisfy basic psychological needs, in particular for autonomy and relatedness. We argue that SDT can help explain why high‐quality listening is effective, especially in reducing defensiveness, bridging divides, and motivating change. The discussion focuses on ways motivation science can build more effective interventions for behavioral change by harnessing listening as an interpersonal strategy.
Why in Spanish “Nos Ponemos Contentos” But not “Satisfechos”: A Cognitive‐Linguistic Review of The “Change‐of‐State Verb Ponerse + Adjective” Construction*
Authors: Martín‐Gascón Beatriz 
Published: January 2022

AbstractConstructionist approaches to language have often viewed metaphors and metonymies either as motivating factors or constraints on lexical‐constructional integration (Goldberg 1995, 2006; the Lexical‐Constructional Model: Butler & Gonzálvez 2014, Gonzálvez 2020, Ruiz de Mendoza & Mairal 2008, Ruiz de Mendoza & Galera 2014). In a similar spirit, the present article provides a detailed study of the role of metaphor in the analysis of the Spanish resultative change‐of‐state construction “ponerse (‘put CL’) + adjective” by examining a list of metaphorical motion constructions of this kind, which are frequent in everyday language when describing temporary arousal states. By paying special attention to constraints in its lexical and constructional structure, we aim to examine whether the metaphor a change of temporary state is a change of temporary location is attested in this type of construction in the Spanish language (i.e., whether it plays a role and, if so, of what kind). It is presumed that the metaphors under analysis in connection to “ponerse + adjective” constructions systematically motivate the meaning of this change‐of‐state verb in Spanish when coappearing with an evaluative adjective, as long as the fact that the latter profiles a normally temporary (short duration) arousal state.
Multilocus species delimitation and phylogeny of the genus Calommata (Araneae, Atypidae) in southern China
Authors: Li Fan , Xu Xin , Zhang Zengtao , Liu Fengxiang , Yang Zizhong , Li Daiqin 
Published: January 2022

AbstractSpecies delimitation is critical to our understanding of evolution, biodiversity, and conservation. However, delimiting species boundaries can be challenging, especially when intraspecific divergence is high (and interspecific divergence is low), and gene flow and incomplete lineage sorting are present. Mygalomorph spiders have become models for examining a variety of evolutionary and biogeographical questions. However, their extreme morphological homogeneity and high genetic structuring make delimiting mygalomorph species especially challenging. Integrative approaches to species delimitation, which combine multiple lines of evidence, have been used to infer the limits of many mygalomorph groups in an independent and reproducible way. Yet molecular species delimitation and phylogenetic relationships of the purseweb spider family Atypidae remain scarce. In this study, we explored the phylogeny and species delimitation of Calommata spiders from southern China using data sets including three mitochondrial (COI, 16S, and 12S) and two nuclear (28S, H3) markers. Our phylogenetic analyses yielded a well‐supported clade containing all southern Chinese Calommata and a sister relationship between C. signata and three new species within it. Based on the single‐locus and multilocus species delimitation analyses, we delimited four Calommata species from southern China: one known species (C. signata) and three new species (C. yuanjiangica sp. n., C. hangzhica sp. n. and C. jinggangica sp. n.). This study thus provides a framework for determining the limits of C. signata sensu lato species and calls for further study of systematics and evolutionary relationships within Calommata and other atypid lineages.
Ink Rheology Regulates Stability of Bioprinted Strands
Authors: Talluri Dhanvanth J. S. , Nguyen Huan T. , Avazmohammadi Reza , Miri Amir K. 
Published: January 2022

Abstract
Three-dimensional (3D) extrusion bioprinting typically requires an ad hoc trial-and-error optimization of the ink composition toward enhanced resolution. The ink solutions are solidified after leaving cone-shaped or cylindrical nozzles. The presence of ink instability not only hampers the extrusion resolution but also affects the behavior of embedded cellular components. This is a key factor in selecting (bio)inks and bioprinting design parameters for well-established desktop and handheld bioprinters. In this work, we developed an analytical solution for the process of ink deposition and compared its predictions against numerical simulations of the deposition. We estimated the onset of ink instability as a function of ink rheological properties and nozzle geometry. Our analytical results suggest that enhancing the shear-thinning behavior of the ink shortens the toe region of the deposition. Such an extrusion process is often desired, as it leads to faster depositions. However, we demonstrated that such conditions increase the possibility of lateral buckling of the strand once touching the substrate defined as instability in this study. The present study serves as a benchmark for detailed simulations of the extrusion process for optimal bioprinting.
A Multi-Objective Optimization Approach for Multi-Vehicle Path Planning Problems Considering Human–Robot Interactions
Authors: Chirala Venkata Sirimuvva , Venkatachalam Saravanan , Smereka Jonathon M. , Kassoumeh Sam 
Published: January 2022

Abstract
There has been unprecedented development in the field of unmanned ground vehicles (UGVs) over the past few years. UGVs have been used in many fields including civilian and military with applications such as military reconnaissance, transportation, and search and research missions. This is due to their increasing capabilities in terms of performance, power, and tackling risky missions. The level of autonomy given to these UGVs is a critical factor to consider. In many applications of multirobotic systems like “search-and-rescue” missions, teamwork between human and robots is essential. In this article, given a team of manned ground vehicles (MGVs) and UGVs, the objective is to develop a model that can minimize the number of teams and total distance traveled while considering human–robot interaction (HRI) studies. The human costs of managing a team of UGVs by a MGV are based on human–robot interaction (HRI) studies. In this research, we introduce a combinatorial, multi-objective ground vehicle path planning problem that takes human–robot interactions into consideration. The objective of the problem is to find: ideal number of teams of MGVs-UGVs that follow a leader–follower framework where a set of UGVs follow an MGV and path for each team such that the missions are completed efficiently.
Simultaneous Human-Robot Matching and Routing for Multi-Robot Tour Guiding Under Time Uncertainty
Authors: Fu Bo , Kathuria Tribhi , Rizzo Denise , Castanier Matthew , Yang X. Jessie , Ghaffari Maani , Barton Kira 
Published: January 2022

AbstractThis work presents a framework for multi-robot tour guidance in a partially known environment with uncertainty, such as a museum. In the proposed centralized multi-robot planner, a simultaneous matching and routing problem (SMRP) is formulated to match the humans with robot guides according to their selected places of interest (POIs) and generate the routes and schedules for the robots according to uncertain spatial and time estimation. A large neighborhood search algorithm is developed to efficiently find sub-optimal low-cost solutions for the SMRP. The scalability and optimality of the multi-robot planner are evaluated computationally under different numbers of humans, robots, and POIs. The largest case tested involves 50 robots, 250 humans, and 50 POIs. Then, a photo-realistic multi-robot simulation platform was developed based on Habitat-AI to verify the tour guiding performance in an uncertain indoor environment. Results demonstrate that the proposed centralized tour planner is scalable, makes a smooth tradeoff in the plans under different environmental constraints, and can lead to robust performance with inaccurate uncertainty estimations (within a certain margin).
Effects of Mustard Husk, Wheat Straw, and Flaxseed Residue Blending on Combustion Behavior of High Ash Coal and Petroleum Coke Blends
Authors: Kumar Pritam , Nandi Barun Kumar 
Published: January 2022

Abstract
This present work reports the combustion studies of coal, petroleum coke (PC) and biomass blends to assess the effects of the mustard husk (MH), wheat straw (WS), and flaxseed residue (FR) blending toward improvement of coal combustion characteristics. Ignition temperature (TS), maximum temperature (TP), burnout temperature (TC), activation energy (AE), and thermodynamic parameters (ΔH, ΔG, and ΔS) were analyzed to evaluate the impact of biomass and PC blending on coal combustion. Experimental results indicate that coal and PC have inferior combustion characteristics compared to MH, WS, and FR. With the increase in WS content in blends from 10 to 30%, TS reduced from 371 to 258 °C and TP decreased from 487 to 481 °C, inferring substantial enhancements in combustion properties. Kinetic analysis inferred that blended fuel combustion could be explained mostly using reaction models, followed by diffusion-controlled and contracting sphere models. Overall, with the increase in FR mass in blends from 10 to 30%, AE decreased from 108.97 kJ/mol to 70.15 kJ/mol signifying ease of combustion. Analysis of synergistic effects infers that higher biomass addition improves coal and PC blends’ combustion behavior through catalytic effects of alkali mineral matters present in biomass. Calculation of thermodynamic parameters signified that combustion of coal and PC is challenging than biomasses; however, blending of biomass makes the combustion process easier.
Center-Oriented Aiming Strategy for Heliostat With Spinning-Elevation Tracking Method
Authors: Waghmare Sainath A. , Puranik Bhalchandra P. 
Published: January 2022

Abstract
Spinning-elevation (SE) tracking system produces a decent image on the receiver surface; however, it is subjected to large variations in tracking speed. In this research, a graphical ray tracing (GRT) model for center-oriented spinning-elevation (COSE) tracking method is developed to evaluate tracking angles. Instead of a target, a heliostat is pointed toward the on-field center point of the tower. Therefore, a spinning-axis of rotation is a line joining a heliostat, and a center of the tower and elevation-axis is perpendicular to it. This aiming strategy has shown a substantial reduction in rotations of spinning-motor. In contrast, the elevation-motor runs at slightly higher rotations than the target-oriented SE method for the same application. Also, COSE tracking method obtains better shape of the reflected image with less aberration on the receiver surface as compared with SE and the traditional Azimuth-elevation (AE) method.
Aerodynamic Design and Wind Tunnel Tests of Small-scale Horizontal-axis Wind Turbines for Low Tip Speed Ratio Applications
Authors: Siram Ojing , Kesharwani Neha , Sahoo Niranjan , Saha Ujjwal K. 
Published: January 2022

Abstract
In recent times, the application of small-scale horizontal axis wind turbines (SHAWTs) has drawn interest in certain areas where the energy demand is minimal. These turbines, operating mostly at low Reynolds number (Re) and low tip speed ratio (λ) applications, can be used as stand-alone systems. The present study aims at the design, development, and testing of a series of SHAWT models. On the basis of aerodynamic characteristics, four SHAWT models viz., M1, M2, M3, and M4 composed of E216, SG6043, NACA63415, and NACA0012 airfoils, respectively have been developed. Initially, the rotors are designed through blade element momentum theory (BEMT), and their power coefficient have been evaluated. Thence, the developed rotors are tested in a low-speed wind tunnel to find their rotational frequency, power and power coefficient at design and off-design conditions. From BEMT analysis, M1 shows a maximum power coefficient (Cpmax) of 0.37 at λ = 2.5. The subsequent wind tunnel tests on M1, M2, M3, and M4 at 9 m/s show the Cpmax values to be 0.34, 0.30, 0.28, and 0.156, respectively. Thus, from the experiments, the M1 rotor is found to be favourable than the other three rotors, and its Cpmax value is found to be about 92% of BEMT prediction. Further, the effect of pitch angle (θp) on Cp of the model rotors is also examined, where M1 is found to produce a satisfactory performance within ±5° from the design pitch angle (θp, design).
An In-Depth Experimental Investigation of the Outdoor Performance of Wafer and Thin Film Photovoltaics Technologies in a Tropical Climate
Authors: Ramgolam Yatindra Kumar , Shamachurn Heman , Coret Jonathan Yannick 
Published: January 2022

Abstract
The photovoltaics (PV) industry is booming at an impressive rate. Knowledge of the outdoor performance of different PV technologies under different climatic conditions is becoming increasingly important for all stakeholders. The aim of this research was to perform the outdoor characterization of three PV technologies in a tropical climate and evaluate their performances with the aid of a set of key performance indicators. An innovative energy autonomous outdoor test facility has been used to measure the weather conditions and the IV curves of mono-Si, poly-Si, and Copper Indium Gallium diSelenide (CIGS) PV modules. Each IV curve was sampled within less than a second, for every 10 min, between sunrise and sunset for a whole year, representing a data set of around 28,000 IV curves of 240 points each. The variations of current, voltage, and power were thoroughly studied for changes in temperature and irradiance. This paper reports the variations of temperature coefficients of current, voltage, and power with the intensity of light. While PV module documentation only presents the temperature coefficients of the short circuit current and open circuit voltage at standard test conditions, this paper additionally provides highly valuable information to PV system designers on the variation of these coefficients in the field. The research is also the first to report the variations of the fill factor with temperature and irradiance. In general, the wafer technologies were found to have a better performance than the thin film technology. Moreover, the open-circuit temperature coefficient was found to improve for higher irradiances only for the wafer technologies, while that for the thin-film technology experienced a degradation. The temperature coefficient of current for the mono-Si module was found to be positive at low irradiance levels, but negative at higher irradiance levels.
Assessing Early Stage Design Sketches and Reflections on Prototyping
Authors: Das Madhurima , Yang Maria C. 
Published: January 2022

Abstract
Designers routinely create informal “thinking” sketches to explore a design space, “talking” sketches to communicate design ideas during the early phases of the design process, and “learning” prototypes to test potential concepts. This study presents two new tools to assess novice designers’ sketch attributes and prototyping reflections in the context of an introductory design course. First, it proposes a rubric for assessing the quality of early-stage design sketches including line smoothness, proportion, and understandability. Of particular note is the contribution of assessing understandability as a metric for sketches as communication tools. This study also presents a tool to capture designer reflections after each iteration of a prototype. Not only does this record what is learned about a design but also designers’ personal and emotional reactions to the process. Sketching-related results show a positive correlation between sketch quality and understandability, indicating the importance of sketch quality especially when designers use sketches to communicate. Results also indicate that early-stage sketch quantity, but not quality, is linked with design outcomes. This study also finds a link between the frequency of sketching and higher maximum sketch quality scores (i.e., at least one highly rated sketch) as well as a correlation between individuals’ maximum sketch quality scores and overall design outcomes. Preliminary results around prototyping indicate that reflection on both the technical and emotional aspects of prototyping may be a worthwhile area of further study. Finally, several results point to novice designers’ lack of consistent focus on users in their prototyping reflections and presentations.
An Articulated Robotic Forceps Design With a Parallel Wrist-Gripper Mechanism and Parasitic Motion Compensation
Authors: Bazman Merve , Yilmaz Nural , Tumerdem Ugur 
Published: January 2022

Abstract
In this paper, a novel four degrees-of-freedom (4DOF) articulated parallel forceps mechanism with a large orientation workspace (±90deg in pitch and yaw, 360deg in roll rotations) is presented for robotic minimally invasive surgery. The proposed 3RSR-1UUP parallel mechanism utilizes a UUP center leg that can convert thrust motion of the 3RSR mechanism into gripping motion. This design eliminates the need for an additional gripper actuator, but also introduces the problem of unintentional gripper opening/closing due to parasitic motion of the 3RSR mechanism. Here, position kinematics of the proposed mechanism, including the workspace, is analyzed in detail, and a solution to the parasitic motion problem is provided. Human-in-the-loop simulations with a haptic interface are also performed to confirm the feasibility of the proposed design.
The Application of Ethnographic Methods to Engineering for Global Development: The Case of the Improvised Betel Nut Cutter
Authors: Bhattacharjya Bibhuti Ranjan , Medhi Saurav Kamal , Kakoty Sashindra Kumar 
Published: January 2022

Abstract
This technical brief is an attempt to report a case analysis of Engineering for Global Development (EGD) research from India. As a part of the engineering design and research project, two models of improvised betel nut cutter (IBNC) are designed, manufactured and field-tested. Engineering ethnography is adopted as a research tool during the design process of IBNC. The “engineering ethnography” facilitated the participation of local stakeholders in the design process which is found to be effective for contextual understandings of the target community’s needs, aspirations, constraints, and socio-cultural norms and values. The technological intervention is expected to solve the problems like finger cut and health drudgery (musculoskeletal pain, back pain, etc.) of the women involved in the supari business in Assam, India. It will also improve productivity and efficiency in the supari cutting practices of women. This case analysis depicts the effectiveness of trans-disciplinary effort in solving complex engineering problems at the bottom of the pyramid (BoP). Evidence gathered from this study is expected to be a useful resource for future endeavors in EGD research.
Deep Generative Tread Pattern Design Framework for Efficient Conceptual Design
Authors: Lee Mingyu , Park Youngseo , Jo Hwisang , Kim Kibum , Lee Seungkyu , Lee Ikjin 
Published: January 2022

Abstract
Tire tread patterns have played an important role in the automotive industry because they directly affect automobile performances. The conventional tread pattern development process has successfully produced and manufactured many tire tread patterns. However, a conceptual design process, which is a major part of the whole process, is still time-consuming due to repetitive manual interaction works between designers and engineers. In the worst case, the whole design process must be performed again from the beginning to obtain the required results. In this study, a deep generative tread pattern design framework is proposed to automatically generate various tread patterns satisfying the target tire performances in the conceptual design process. The main concept of the proposed method is that desired tread patterns are obtained through optimization based on integrated functions, which combine generative models and tire performance evaluation functions. To strengthen the effectiveness of the proposed framework, suitable image pre-processing, generative adversarial networks (GANs), two-dimensional (2D) image-based tire performance evaluation functions, design generation, design exploration, and image post-processing methods are proposed with the help of domain knowledge of the tread pattern. The numerical results show that the proposed automatic design framework successfully creates various tread patterns satisfying the target tire performances such as summer, winter, or all-season patterns.