bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ultrasound‐guided totally implantable venous access ports placement via right brachiocephalic vein in pediatric population: A clinical debut
Authors: Ding Wei , Qiu Lu , Li Tianyu , Su Weiwei , Yu Qian , Hu Tianshen , Wang Chunxin , Fan Chen , Wang Weidong 
Published: July 2022

AbstractBackground and objectivesTo investigate the feasibility and safety of ultrasound‐guided totally implantable venous access ports (TIVAPs) via the right brachiocephalic vein (BCV) in pediatric patients.MethodsA single‐institute retrospective review was performed on 35 pediatric patients with predominantly hematological malignancies (88.6%) who underwent TIVAP implantation via ultrasound‐guided right BCV approach from July 2018 to June 2021. The catheter tip was adjusted to be positioned at the cavoatrial junction under pulsed fluoroscopic guidance. Technical success rate, procedural information, and TIVAP‐related complications were evaluated.ResultsAll the pediatric TIVAP devices were successfully implanted via right BCV access. Venous access was successful by first attempt in 32 children (91%), two cases (5.7%) required a second attempt, and one patient (2.9%) required a third attempt. The mean procedural time was 44.6 ± 6.4 minutes (range: 34–62 minutes). No intraoperative complications occurred. The average TIVAP indwelling time was 564 ± 208 days (range: 193–1014 days), with a cumulative 19,723 catheter‐days. Overall, three patients (8.6%) experienced four postoperative complications (two cases of local hematoma and two catheter dysfunctions) at a rate of 0.2 per 1000 catheter‐days. No other complications such as wound dehiscence, delayed incision healing, catheter‐related thrombosis (CRT), catheter malposition/fracture, surgical site infection, catheter‐related bloodstream infection (CRBSI), pinch‐off syndrome, and drug extravasation were observed during follow‐up.ConclusionsUltrasound‐guided right BCV access for TIVAP placement in pediatric patients appears to be technically feasible, safe, and effective. Further large‐sample, prospective studies are warranted.
On the effect of nocturnal radiation fog on the development of the daytime convective boundary layer: A large‐eddy simulation study
Authors: Schwenkel Johannes , Maronga Björn 
Published: July 2022

AbstractThe potential effect of failing to predict nocturnal deep radiation fog on the development of the daytime convective boundary layer (CBL) is studied using large‐eddy simulations. Typical spring and autumn conditions for the mid‐latitudes are used to perform simulations in pairs. Fog formation is allowed in one simulation of each pair (nocturnal fog [NF]) and is suppressed in the other (clear sky [CS]). This allows for the identification of properties (temperature, humidity, boundary‐layer depth), conditions, and processes in CBL development that are affected by fog. Mixing‐layer temperatures and boundary‐layer depths immediately after fog dissipation in CSs are shown to be up to 2.5 K warmer and 200 m higher, respectively, than the NF counterparts. Additionally, greater water vapor mixing ratios are found in the CSs. However, owing to greater temperatures, relative humidities at the CBL top are found to be less in CSs than in the corresponding NFs. This relative humidity difference might be an indication that cloud formation is suppressed to some extent. The magnitude of the differences between CSs and NFs during the day is mainly correlated to the fog depth (in terms of duration and liquid water path), whereas the key processes responsible for differences are the atmospheric long‐wave cooling of the fog layer (for temperature development) and droplet deposition (for water vapor mixing ratio development).
Serving rural low‐income markets through a social entrepreneurship approach: Venture creation and growth
Authors: Prado Andrea M. , Robinson Jeffrey A. , Shapira Zur 
Published: July 2022

AbstractResearch SummaryRural communities in developing countries often exhibit high poverty levels, lack of skilled labor, and limited infrastructure. Through an analysis of three social ventures serving rural low‐income markets in Latin America, we explore how social entrepreneurs create and grow their ventures. We advance a multilevel framework that incorporates three main levels within the creation and growth process of social ventures serving these markets. At the individual level, founders are continuously revising goals and acquiring new capabilities. At the community‐relations level, they engage in explicit efforts to ground business operations in the community. At the organizational level, they pursue innovative business models. These processes are dynamic and interdependent. This framework contributes to the research on social venture creation and growth in uncertain and resource‐constrained environments.Managerial SummaryPhilanthropy or base of the pyramid (BoP) initiatives by multinational corporations have sought to alleviate poverty in rural low‐income communities in developing countries. Social entrepreneurship constitutes an alternative mechanism to generate social impact by bringing products and services to this market segment in a financially sustainable way. However, the creation and growth of a social venture in this context pose multiple challenges given the socioeconomic conditions of its populations and the limited access to public infrastructure. Based on a comparative analysis of three Latin American enterprises, our research suggests the following takeaways for social entrepreneurs seeking to serve these communities: (a) be willing to change goals and acquire new capabilities (e.g., business training); (b) see the community not only as customers or beneficiaries but also as a source of useful resources to deploy in the venture's operation; and (c) innovate in business model components (e.g., distribution, marketing, human resource management) that, due to limiting conditions in these communities, require a different approach than in mainstream markets.
Structural and Magnetic Properties of Dimeric and Tetrameric Copper (II) Complexes with Simple Bidentate Ligands and Phosphate Bridges
Authors: Sureshbabu Popuri , Upadhyay Chandan , Sabiah Shahulhameed 
Published: July 2022

AbstractMonomeric [Cu(DACH)(L)]2+ (DACH=1,2‐diaminocyclohexane) heteroleptic copper(II) complexes (1–4) on reaction with diphenyl phosphate yielded dinuclear phosphate bridged copper(II) complexes [Cu2L2(dpp)3]+ (5–7), [dpp=diphenyl phosphate; L=bpy (5), Phen (6), 5, 6 dimethyl phenanthroline, (7)] and a tetra‐nuclear [Cu4(2,9‐dmp)2(dpp)4(OH)2]2+ complex (8) (2, 9 dmp=2, 9 dimethyl phenanthroline). Interestingly, isomeric ligands 5,6‐dmp and 2,9‐dmp yielded dinuclear complex 7 and tetra‐nuclear complex 8 triggered by steric effects. Even though the initial combination contains mixed bidentate ligands, the resulting complexes have only one type of bidentate ligand around the copper(II) ions. These reactions involve ligand expulsion to form the phosphate bridged complexes. All the phosphate bridged complexes 5–8 were characterized by elemental analysis, absorption spectrum, FT‐IR, ESI‐MS, and single‐crystal XRD. The molecular structures show Cu(II) in square pyramidal/trigonal bipyramidal geometry with phosphate in μ‐1,3‐bridging mode. All complexes exhibit intra‐antiferromagnetic interactions with negative J values from variable temperature magnetic susceptibility study by SQUID measurements.
One‐Pot Microwave‐Assisted Synthesis, in Vitro Anti‐inflammatory Evaluation and Computer‐Aided Molecular Design of Novel Sulfamide‐Containing Bisphosphonates Derivatives
Authors: Amira Aϊcha , K'tir Hacène , Aouf Zineb , Khaldi Taha , Bentoumi Houria , Khattabi Latifa , Zerrouki Rachida , Ibrahim‐Ouali Malika , Aouf Nour‐Eddine 
Published: July 2022

AbstractAn eco‐friendly and one‐step microwave‐assisted green synthesis of new functionalized bisphosphonates derivatives was described by a three‐component reaction of aromatic sulfamide with triethyl orthoformate and diethyl phosphite. The synthesized compounds were characterized by 1H, 13C, 31P NMR and IR analysis. Some of these compounds were tested for in vitro anti‐inflammatory activity and showed moderate inhibition compared to diclofenac as standard drug. Furthermore, to rationalize the observed biological data, several in silico approaches have been used to explain Structure‐Activity Relationship study (SAR) based on DFT calculation, molecular docking, pharmacodynamic, pharmacokinetic and toxicity profiles of sulfamide‐containing bisphosphonates derivatives as anti‐inflammatory drugs. The results of the in vitro and in silico activities prove that the compound 4 b have the ideal structural requirements for further development of novel anti‐inflammatory agents.
Precarious situations: A prelude to hiring more hubristic chief executive officers
Authors: Hill Aaron D. , Recendes Tessa , Yang Yuting 
Published: July 2022

AbstractResearch SummaryWe build upon evidence suggesting the precariousness of the situation organizations face when trying to fill chief executive officer (CEO) openings affects both which executives seek and accept such positions and which executives are sought and endorsed by those tasked with hiring. We argue that while more precarious situations likely deter some executives from pursuing and/or accepting such opportunities, more hubristic executives' tendencies make them likely to do so despite the associated challenges. Concordantly, those tasked with filling CEO openings likely view more hubristic executives as particularly important for combatting the challenges of more precarious situations, leading them to seek and endorse such executives. Using multiple conceptualizations of precarious situations, we find support for our arguments in a sample of CEO changes in S&P 500 firms.Managerial SummaryWhy do organizations select more hubristic executives to fill CEO openings? We answer this question by highlighting the role that situational precariousness plays. Specifically, not all CEO openings are equally attractive to prospective CEOs and not all prospective CEOs are equally attractive to decision makers tasked with filling such openings. We argue and find support for the notion that more hubristic executives' tendencies make them more likely to pursue and accept CEO opportunities at organizations in more precarious situations while those tasked with filling CEO openings likewise believe more hubristic executives' tendencies are particularly important given the precarious situations those organizations face. Our findings advance knowledge of CEO hubris and provide insights for practice.
Collaborations that hurt firm performance but help employees’ careers
Authors: Piezunka Henning , Grohsjean Thorsten 
Published: July 2022

AbstractResearch SummaryWhen a firm and a competitor collaborate with the same partner, they compete for the shared partner's resources and attention. Such “peer competition” has been shown to negatively affect a firm's access to resources and its performance. One might expect that also the employees’ careers to suffer as a result. However, we argue that the firm's employeesbenefitfrom such collaborations. They leverage these collaborations to build social capital—helping their mobility and careers. We find empirical support for our theory using a large sample dataset of video game companies. Our study points to an important yet hitherto neglected agency conflict: employees seek interfirm collaborations that benefit them personally but hurt their firm.Managerial SummaryWe show that some alliances can be detrimental to a firm's performance yet can benefit its employees. Specifically, we find that collaborating with the same partner as a competing firm hurts firm performance but can be leveraged by employees to advance their careers—by using the opportunity to connect with competing firms and find better job opportunities. We also find that firms often take on more collaboration than is good for them but entering many collaborations can benefit employees. Our study shows that the interests of firms and their employees are not always aligned when it comes to interfirm collaborations.
The option value in complements within platform‐based ecosystems
Authors: Toh Puay Khoon , Agarwal Shiva 
Published: July 2022

AbstractResearch SummaryWithin platform‐based ecosystems, what drives platform owners' investment decision to enable third‐party complements onto their platforms? Departing from the conventional focus on the complementarity value that these complements add to platform owners, we examine how uncertainty in the complementary product market drives this decision. We offer a novel perspective on third‐party complements—they contain option value allowing the platform owner to defer its own entry into the market. Thus, uncertainty increases investment in enabling complements, especially with greater “downside risk” in the market or learning‐by‐observing. We demonstrate this perspective using numerical examples, simulations, and data on Apple's iPhone ecosystem from 2010 to 2015. This perspective brings together literatures on complementarity value and entry into the complementary market, and indicates that complements generate more than complementarity value within platform‐based ecosystems.Managerial SummaryTo manage complements within a platform‐based ecosystem, the platform owner needs to understand how complements add value. Conventionally, complements are seen to render the platform more attractive. We offer a different view—complements can be seen as real options for the platform owner to learn about the product‐market potential and decide later if it should enter the market with its own product. Using data from Apple's iPhone ecosystem, we demonstrate this option value and show that it is salient when “downside risk” of the market is high or learning‐by‐observing is possible. Our analysis suggests that without considering such option value, platform managers may have underestimated the value‐add of complements on their platforms. Our findings also contribute to recent discussions about platform owners' entry into third‐party spaces.
Biodegradable Films from Spray Dried Starch Inclusion Complexes with Bioactive Compounds—The Effect of Glycerol and pH
Authors: Marinopoulou Anna , Zoumaki Maria , Goulas Athanasios , Raphaelides Stylianos , Karageorgiou Vassilis 
Published: July 2022

AbstractIn the present study, thermoplastic films are prepared using spray dried starch‐bioactive compound systems powders with different concentrations of glycerol (20% or 40%). The starch‐based films are produced by casting after dissolution under neutral (pH 7) or alkaline conditions (pH 12). Results reveal that elevated glycerol contents lead to increased moisture and hygroscopicity which is related to the availability of more ─OH groups. ANOVA shows that the glycerol concentration, the pH value, and the interactions of bioactive compounds with glycerol, bioactive compounds with pH, and glycerol with pH, influence significantly the mechanical properties of the thermoplastic starch films. Young's modulus of elasticity increases alongside with glycerol content, indicating improved flexibility of the films. Stress decreases with higher glycerol contents and lower pH while strain on the contrary, increases as the glycerol and pH increase in the films. Significant differences are also observed in water adsorption and water vapor transmission rate values. As expected, water adsorption increases with increasing relative humidity (RH) with the glycerol content positively affecting the water uptake by the films. Microscopic examination indicates the homogeneous distribution of the bioactive compounds in the matrix of the films.
Person‐centered assessment of apathy and resistance to care in people living with dementia: Review of existing measures
Authors: Mast Benjamin T. , Ertle Emilee M. , Kolanowski Ann , Mountain Gail , Moniz‐Cook Esme , Halek Margareta 
Published: July 2022

AbstractIntroductionThe review described in this paper builds upon the Dementia Care Practice Recommendations (DCPR) published by the Alzheimer's Association in 2018 and addresses behavior change and the need for targeted outcome measures that evolve from person‐centered frameworks and help evaluate interventions. Apathy and resistance to care (RTC) are two specific behavioral expressions of unmet need or distress exhibited by people living with dementia, which are upsetting to formal and family caregivers and compromise quality of life for people living with dementia.MethodsWe conducted literature searches of major databases (PsycInfo, PubMed, EBSCO, CINAHL) for papers examining apathy and RTC constructs in samples of people living with dementia. Reliability and validity coefficients were reviewed and reported, along with examination of whether each measure facilitates contextual understanding of behavior.ResultsThree stand‐alone measures of RTC and ten measures of apathy were identified and reviewed. The RTC measures demonstrated good psychometric properties but do not include the perspective of the person living with dementia or contextual aspects of the behavior. The identified apathy measures demonstrated fair to good psychometric properties, and although there is greater consideration of context, none adequately include the perspective of the person living with dementia.DiscussionAlthough reliable and valid measures have been developed to measure apathy and RTC in people living with dementia, there is greater need for conceptually driven measurement of behavior context and for tools that elicit and include the perspective of the person living with dementia.
The Italian version of the Virtual Dementia Tour: Manual translation and an analysis of consistency, validity, and reliability of its pre‐ post‐experience survey
Authors: Morganti Francesca , Brignoli Paola , Beville Paula Kay 
Published: July 2022

AbstractIntroductionClinical indications on how to approach caregiving with a person living with dementia underline the need “to have an empathic attitude” requiring the caregiver to view the world from the perspective of the person with dementia. However, it is not easy for the caregiver to understand the perspective their patients have on day‐to‐day experiences. To put the caregivers in the person with dementia's shoes, the Virtual Dementia Tour (VDT) was developed in 2001, and has been administered to millions of health professionals, community leaders, and family caregivers.MethodIn this paper we present the Italian version of the VDT and discuss its internal validity and test–retest reliability for the pre–post experience survey defined by the VDT procedure.ResultsAn Italian sample (N = 419; mean age = 44.8; standard deviation 14.2) completed the tour and a 5‐item survey provided before and after the experience revealed the disposition toward people with dementia changed.DiscussionThe VDT Italian version wasrevealed to be valid in supporting a positive perspective change in the perception of dementia as is seen in the original VDT used in English‐speaking countries.Highlights
Empathy predicts a higher quality of caregiving for the person living with dementia.
The Virtual Dementia Tour (VDT) provides an experience from the person living with dementia's perspective and supports empathy.
We present the first Italian version of VDT and its manual translation and validation.
Italian VDT internal consistency and test–retest reliability were calculated.
Results confirms the reliability and validity of the Italian VDT for empathy.
A Uniqueness Theorem for Incompressible Fluid Flows with Straight Streamlines
Authors: Guilfoyle Brendan 
Published: July 2022

AbstractIt is proven that the only incompressible Euler fluid flows with fixed straight streamlines are those generated by the normal lines to a round sphere, a circular cylinder or a flat plane, the fluid flow being that of a point source, a line source or a plane source at infinity, respectively. The proof uses the local differential geometry of oriented line congruences to integrate the Euler equations explicitly.
Portable dynamic ultrasonography is a useful tool for the evaluation of suspected syndesmotic instability: a cadaveric study
Authors: Hagemeijer N. C. , Lubberts B. , Saengsin J. , Bhimani R. , Sato G. , Waryasz G. R. , Kerkhoffs G. M. M. J. , DiGiovanni C. W. , Guss D. 
Published: July 2022

Abstract
Purpose
Portable ultrasonography (P-US) is increasingly used to diagnose syndesmotic instability. The aim of this study was to evaluate syndesmotic instability by measuring the distal tibiofibular clear space (TFCS) in a cadaveric model using P-US with progressive stages of syndesmotic ligamentous transection under external rotation stress.

Methods
Ten fresh lower leg cadaveric specimens amputated above the proximal tibiofibular joint were used. Using P-US, the TFCS was evaluated in the intact stage and after progressive sectioning of the (1) anterior–inferior tibiofibular ligament (AITFL), (2) interosseous ligament (IOL), and (3) posterior–inferior tibiofibular ligament (PITFL). The TFCS was measured in both the unstressed (0 Nm) state and with 4.5, 6.0, 7.5, and 9.0 Nm of external rotation stress using a bone hook placed on the first metatarsal bone at each stage of ligamentous transection stage using both P-US and fluoroscopy.

Results
When assessed with P-US, partial syndesmotic injury encompassing the AITFL and IOL resulted in significant TFCS widening at 4.5 Nm of external rotation torque when compared to intact state with a TFCS-opening of 2.6 ± 2 mm, p = 0.01. In contrast, no significant differences in TFCS were detected using fluoroscopy. Only a moderate correlation was found between P-US and fluoroscopy.

Conclusion
P-US is a useful tool in diagnosing syndesmotic instability during external rotation stress examination. TFCS-opening increased as additional ligaments of the syndesmosis were transected, and application of 4.5 Nm torque was sufficient to detect a difference of 2.6 mm after the IOL cut.
Monitoring of shear heating effects during injection molding of rubber to improve the process control
Authors: Ramini Mattia , Agnelli Silvia 
Published: July 2022

AbstractThis work aims to get new insights into the “process monitoring tool” proposed by the authors for the online monitoring of the shear heating phenomenon during injection molding of technical rubber parts. The online monitoring is based on direct measurement of the surface rubber temperature (shear heating temperature,TSH) by an infrared thermal camera of the rubber as it leaves the extruder barrel of the injection molding machine. The measured rubber temperature is a process indicator giving the thermal history of the rubber compound injection and process safety. Therefore, this fast process control is applied to industrial applications to investigate the processing behavior of ethylene acrylate (AEM) rubber compounds. In particular, the relationships betweenTSHvs injection pressure, vs injection speed, vs screw speed rotation and vs screw length over diameter ratio (L/Dratio) and vs AEM rubber compound properties variation due to exceeding the shelf life are investigated. The results show thatTSHis manly influenced by the screwL/Dratio, followed by injection pressure and screw speed rotation (especially if are set to higher levels), whereas the injection speed is the least effective parameter to reduceTSH. Furthermore, a previously found robust correlation between the shear heating parameter (ηSH) and the minimum torque measured in rheometric laboratory tests (ML) is used to show the noteworthy deviation from the proportional trend when the AEM rubber compound exceeded it shelf life. Therefore, the coefficient of determination of$${\text{log}}\eta_{{{\text{SH}}}}$$logηSHvsMLcurves provides a good indication of process stability, while it is running.