bluuebunny/crossref_metadata_2025_split huggingface dataset:
Block-based state-expanded network models for multi-activity shift scheduling
Authors: Römer Michael 
Published: July 2023

AbstractThis paper presents new mixed-integer linear programming formulations for multi-activity shift scheduling problems (MASSP). In these formulations, the rules governing shift feasibility are encoded in block-based state-expanded networks in which nodes are associated with states and arcs represent assignments of blocks of work or break periods inducing state transitions. A key advantage of these formulations is that for the anonymous MASSP in which all employees are considered as equal only a single network with integer flow variables is needed as long as the network encodes all shift composition rules. A challenging aspect is that the networks can become very large, yielding huge models that are hard to solve for large problem instances. To address this challenge, this paper proposes two exact modeling techniques that substantially reduce the size of the model instances: First, it introduces a set of aggregate side constraints enforcing that an integer flow solution can be decomposed into paths representing feasible shifts. Second, it proposes to decouple the shift composition from the assignment of concrete activities to blocks of work periods, thereby removing a large amount of symmetry from the original model. In a computational study with two MASSP instance sets from the literature dealing with shift scheduling problems, we demonstrate the effectiveness of these techniques for reducing the both size of the model instances and the solution time: We are able to solve all instances, including more than 70 previously open instances, to optimality–the vast majority of them in less than 30 min on a notebook computer.
A Successive Linear Relaxation Method for MINLPs with Multivariate Lipschitz Continuous Nonlinearities
Authors: Grübel Julia , Krug Richard , Schmidt Martin , Wollner Winnifried 
Published: July 2023

AbstractWe present a novel method for mixed-integer optimization problems with multivariate and Lipschitz continuous nonlinearities. In particular, we do not assume that the nonlinear constraints are explicitly given but that we can only evaluate them and that we know their global Lipschitz constants. The algorithm is a successive linear relaxation method in which we alternate between solving a master problem, which is a mixed-integer linear relaxation of the original problem, and a subproblem, which is designed to tighten the linear relaxation of the next master problem by using the Lipschitz information about the respective functions. By doing so, we follow the ideas of Schmidt, Sirvent, and Wollner (Math Program 178(1):449–483 (2019) and Optim Lett 16(5):1355-1372 (2022)) and improve the tackling of multivariate constraints. Although multivariate nonlinearities obviously increase modeling capabilities, their incorporation also significantly increases the computational burden of the proposed algorithm. We prove the correctness of our method and also derive a worst-case iteration bound. Finally, we show the generality of the addressed problem class and the proposed method by illustrating that both bilevel optimization problems with nonconvex and quadratic lower levels as well as nonlinear and mixed-integer models of gas transport can be tackled by our method. We provide the necessary theory for both applications and briefly illustrate the outcomes of the new method when applied to these two problems.
“Balanced” or “polarized” entrepreneurial ecosystem types? Evidence from Italy
Authors: Cavallo Angelo , Colombelli Alessandra , D’Amico Elettra , Paolucci Emilio 
Published: July 2023

AbstractEntrepreneurial ecosystems (EE) are particular systems of interdependent actors and relations that directly or indirectly support the creation and growth of new ventures. EE can vary a lot, based on a unique and dynamic combination of several elements whose relevance can differ across regions. Most studies acknowledged, or ex-ante assumed, that EE elements are all relevant to the same extent, yet others suggest that some EE elements are more important in creating the environmental conditions necessary to foster entrepreneurship in a specific territory. In this paper, we contend that research should provide evidence on this territory-specific matter. Specifically, more evidence is needed on the relevance of each EE element at regional level—as we lack empirical analysis that discriminates between EE types according to elements’ importance. To fill this gap, we assess and characterize the existence of EE types at the regional level in Italy. Our findings suggest that four EE types exist, and they are characterized by a balanced combination of EE elements. On the basis of our results, we generate propositions providing insights that may be useful for future research and policymaking.
Sexting Among Australian Adolescents: Risk and Protective Factors
Authors: Howard Dominika , Jarman Hannah K. , Clancy Elizabeth M. , Renner Heidi M. , Smith Rachel , Rowland Bosco , Toumbourou John W. , Fuller-Tyszkiewicz Matthew , Klettke Bianca 
Published: July 2023

AbstractAlthough consensual sending of sexts between adolescents is considered developmentally appropriate, it may also entail a range of negative consequences. Current sexting research lacks a comprehensive theoretical framework identifying a range of risk and protective factors underpinning adolescent consensual sending of sexts across individual, interpersonal, and distal levels. Further, there is a lack of systematic evaluation of how the importance of these factors may vary across adolescent age. This study investigated the utility of the Social Development Model to predict a range of risk and protective factors across individual, family, peer, school, and community-level factors. The sample included 1302 teenagers from Victoria, Australia (Mage = 14.54, SD = 1.14, 50.8% girls). Results indicated that 146 (11.7%) participants sent a sext (76 boys and 70 girls). Logistic regression analyses revealed that the Social Development Model accounted for 45.8% of variance in sexting, with greater likelihood of sending sexts being associated with older age, prior sexual activity, school sector, physical activity, lifetime substance use, greater depressive symptoms, sensation seeking, and perceived substance availability in the community. Multigroup analyses revealed that lifetime substance use was associated with a greater likelihood of sending sexts among younger teens. Among older adolescents, adaptive coping was associated with reduced engagement in sexting, while higher parental overcontrol and family conflict increased the odds of sending sexts. Overall, sexting is associated with a range of modifiable factors potentially amenable to intervention.
Characteristics of eco-friendly perovskite solar cell with moth-eye nanostructure array
Authors: Wahba Afaf Salah , Abdel-Latif Ghada Yassin , El-Sherbiny Shamia , Areed Nihal F. F. , Hameed Mohamed Farhat O. , Obayya S. S. A. 
Published: July 2023

AbstractA novel design of tin perovskite (CH3NH3SnI3) solar cell (PSC) is proposed and analyzed for energy harvesting application. The suggested PSC is lead free where moth-eye nanostructures are implemented in the active material to improve the light trapping and hence the light absorption. The suggested SC is numerically studied using finite difference time domain (FDTD) via Lumerical software package. The geometrical parameters and position of the nanostructures are studied to maximize the absorption and hence the optical efficiency. The reported PSC covered by the moth-eye nanostructures exhibits marked light trapping compared to the conventional planar structure with photocurrent density of 46.0082 (mA/cm2), an optical generation rate of 3.38 e28 (m−3. s−1) and an ultimate efficiency of 31.76%. Therefore, an enhancement of 14.496% is obtained compared to the traditional PSC due to the localized surface plasmons (LSP) modes around the moth eye nanostructures. The suggested design is an efficient replacement to lead—perovskite owing to excellent photovoltaic properties, cheap fabrication cost, suitable band gap of 1.02 eV, eco-friendly and great performance in converting sunlight to electrical energy.
Volume exclusion effects in perovskite charge transport modeling
Authors: Abdel Dilara , Courtier Nicola E. , Farrell Patricio 
Published: July 2023

AbstractDue to their flexible material properties, perovskite materials are a promising candidate for many semiconductor devices such as lasers, memristors, LEDs and solar cells. For example, perovskite-based solar cells have recently become one of the fastest growing photovoltaic technologies. Unfortunately, perovskite devices are far from commercialization due to challenges such as fast degradation. Mathematical models can be used as tools to explain the behavior of such devices, for example drift-diffusion equations portray the ionic and electric motion in perovskites. In this work, we take volume exclusion effects on ion migration within a perovskite crystal lattice into account. This results in the formulation of two different ionic current densities for such a drift-diffusion model – treating either the mobility or the diffusivity as density-dependent while the other quantity remains constant. The influence of incorporating each current density description into a model for a typical perovskite solar cell configuration is investigated numerically, through simulations performed using two different open source tools.
Knowing what it is
Authors: Jago Mark 
Published: July 2023

AbstractEssentialists understand modal properties in terms of the essences of things. Given this view, it is natural to think that our knowledge of modality ultimately derives from our knowledge of the essences of things. Is that view plausible? Do we genuinely have knowledge of the essences of things, in a form substantial enough to ground our modal knowledge? The more we pack into the notion of essence to allow it to underpin modal properties, the harder it is to claim genuine knowledge. I will argue that realists about essence of a certain kind can have the best of both worlds. They can co-opt a conventionalist explanation of our knowledge of essence, but against the background of a fully realist notion of essence.
Does students’ exposure to websites moderate the positive relationship between print exposure and text comprehension?
Authors: Strømsø Helge I. 
Published: July 2023

AbstractIn this study, I investigated the print exposure and website exposure of undergraduates in relation to their scores on a text comprehension test. Print exposure was measured with a national version of the author recognition test, whereas a new website recognition test was developed to measure students’ exposure to texts on the internet. The participants’ reading attitudes and number of years in higher education were included as control variables. Exploratory factor analysis suggested that three factors are measured by the website recognition test: (1) lifestyle topics; (2) news and culture; and (3) social activity. The results showed that only print exposure predicted text comprehension significantly and positively, but not for students with a high score on the website recognition test. Moderation analyses indicated that the pattern was clearest for the social activity factor of the website recognition measure. Hence, high activity on social media seems to diminish or remove the positive relationship between print exposure and text comprehension. The results confirm that print exposure relates positively to important aspects of students’ literacy, while further studies should be carried out to investigate the potential negative relationship between website exposure and literacy.
Advancement of electrically rechargeable multivalent metal-air batteries for future mobility
Authors: Alemu Molla Asmare , Getie Muluken Zegeye , Worku Ababay Ketema 
Published: July 2023

AbstractThe demand for newer, lighter, and smaller batteries with longer lifespans, higher energy densities, and generally improved overall battery performance has gone up along with the need for electric vehicles. Alternatives must be found because lithium sources are limited and the metal is expensive. Aligned with this, efforts are being carried out to enhance the battery performance of electric vehicles and have shown promise in allaying consumer concerns about range anxiety and safety. This demonstrates that the electric car market will remain very dynamic in the coming decades, with costs continuing to fall. However, developing advanced energy storage technologies from more abundant resources that are cheaper and safer than lithium-ion batteries is a viable option for future mobility and product sustainability. This paper recapitulates the current state of multivalent particularly zinc and iron metal-air battery applications for electric mobility. The cycle capability, range, costs, service life, safety, discharge, and charging rate are all investigated. Factors hampering the further development and marketing of these technologies in connection with possible solutions are also conferred.
R&D project portfolio selection using the Iterative Trichotomic Approach in order to study how subjectivity of the weights is reflected in the selected projects of the final portfolio
Authors: Mavrotas George , Makryvelios Evangelos 
Published: July 2023

AbstractProject portfolio selection is a common problem in modern organizations. The allocation of resources to projects taking into account (a) the multi-criteria evaluation of projects and (b) the policy requirements for the final portfolio, is often addressed with a combination of multi-criteria analysis for the evaluation part and integer programming for the optimization part. However, the final portfolio is sensitive to changes in the importance of criteria, due to the multi-criteria evaluation of the projects which is the driver of the optimization. In the proposed approach, we take into account the inherent subjectivity expressed in the weights of criteria using a variation of the Iterative Trichotomic Approach method (Mavrotas and Pechak in Int J Mult Criteria Decis Mak 3:79–97, 2013). Specifically, we use an iterative process that starts considering portfolios that emerge from optimizing separately each criterion and gradually converging to the original set of criteria weights. The additional information provided to the decision maker by the proposed method, is that she/he can realize if the selection or exclusion of a specific project in the final portfolio is objective or it depends on the subjective weights and to what extent, while the conventional MCDA-IP approach does not differentiate the selected projects according to the imposed degree of subjectivity. The method is illustrated with a real data application from a project portfolio selection problem in Greece with 540 R&D projects that have to follow sectoral and geographical constraints.
The Differential Effect of Oxytocin on Mindfulness in People with Different Resilience Level
Authors: Lau Way Kwok-Wai , Sanchez Vidaña Dalinda I. , Tai Alan Pui-Lun , Chan Jackie Ngai-Man , Ngan Lionel Ho-Man , Leung Mei-Kei , Lau Benson Wui-Man 
Published: July 2023

Abstract
Objectives
Mindfulness skills have been shown to be an important attribute for mental and general well-being. The neurohormone oxytocin and resilience are established biological and psychological factors that are associated with mindfulness. This study aimed to elucidate the interaction of resilience and oxytocin levels as independent variables to predict mindfulness facets in university students.

Method
Participants (n = 96) were university students in Hong Kong who previously participated in a resilience study with no history of mental health disorders or substance abuse. Mindfulness and resilience were measured using the Chinese versions of the Five Facet Mindfulness Questionnaire and the Connor-Davidson Resilience Scale, respectively. Saliva samples were collected to measure oxytocin levels using an enzyme-linked immunosorbent assay kit. A moderator analysis was conducted to assess the associations between oxytocin levels (predictor) and the five facets of mindfulness (outcomes) under the moderation effect of resilience (moderator).

Results
The interaction between oxytocin and resilience levels predicted the nonreactivity facet of mindfulness. Specifically, oxytocin levels significantly and positively predicted nonreactivity in participants with low or moderate resilience levels, but not in those with high resilience.

Conclusion
This study showed the influence of oxytocin levels on mindfulness was significant only in participants with low or moderate resilience, suggesting that oxytocin might act on other factors instead of influencing mindfulness in individuals with high levels of resilience.

Pre-registration
This study is not pre-registered.
The activity of cuproptosis pathway calculated by AUCell algorithm was employed to construct cuproptosis landscape in lung adenocarcinoma
Authors: Lin Weixian , Wang Jiaren , Ge Jing , Zhou Rui , Hu Yahui , Xiao Lushan , Peng Quanzhou , Zheng Zemao 
Published: July 2023

AbstractCuproptosis is a recently described copper-dependent cell death pathway. Consequently, there are still few studies on lung adenocarcinoma (LUAD)-related cuproptosis, and we aimed to deepen in this matter. In this study, data from 503 patients with lung cancer from the TCGA-LUAD cohort data collection and 11 LUAD single-cells from GSE131907 as well as from 10 genes associated with cuproptosis were analyzed. The AUCell R package was used to determine the copper-dependent cell death pathway activity for each cell subpopulation, calculate the CellChat score, and display cell communication for each cell subpopulation. The PROGENy score was calculated to show the scores of tumor-related pathways in different cell populations. GO and KEGG analyses were used to calculate pathway activity. Univariate COX and random forest analyses were used to screen prognosis-associated genes and construct models. The ssGSEA and xCell algorithms were used to calculate the immunocyte infiltration score. Based on data from the GDSC database, the drug sensitivity score was calculated using oncoPredict. Finally, in vitro experiments were performed to determine the role of TLE1, the most important gene in the prognostic model. The 11 LUAD single-cell samples were classified into 8 different cell populations, from which epithelial cells showed the highest copper-dependent cell death pathway activity. Epithelial cell subsets were significantly positively correlated with MAKP, hypoxia, and other pathways. In addition, cell subgroup communication showed highly active collagen and APP pathways. Using the Findmark algorithm, differentially expressed genes (DEGs) between epithelial and other cell types were identified. Combined with the bulk data in the TCGA-LUAD database, DEGs were enriched in pathways such as EGFR tyrosine kinase inhibitor resistance, Hippo signaling pathway, and tight junction. Subsequently, we selected 4 genes (out of 112) with prognostic significance, ANKRD29, RHOV, TLE1, and NPAS2, and used them to construct a prognostic model. The high- and low-risk groups, distinguished by the median risk score, showed significantly different prognoses. Finally, we chose TLE1 as a biomarker based on the relative importance score in the prognostic model. In vitro experiments showed that TLE1 promotes tumor proliferation and migration and inhibits apoptosis.
The Metaverse’s Thirtieth Anniversary: From a Science-Fictional Concept to the “Connect Wallet” Prompt
Authors: Smethurst Reilly , Barbereau Tom , Nilsson Johan 
Published: July 2023

AbstractThe metaverse is equivocal. It is a science-fictional concept from the past; it is the present’s rough implementations; and it is the Promised Cyberland, expected to manifest some time in the future. The metaverse first emerged as a techno-capitalist network in a 1992 science fiction novel by Neal Stephenson. Our article thus marks the metaverse’s thirtieth anniversary. We revisit Stephenson’s original concept plus three sophisticated antecedents from 1972 to 1984: Jean Baudrillard’s simulation, Sherry Turkle’s networked identities, and Jacques Lacan’s schema of suggestible consumers hooked up to a Matrix-like capitalist network. We gauge the relevance of these three antecedents following Meta’s recent promise to deliver a metaverse for the mainstream and the emergence of blockchain-oriented metaverse projects. We examine empirical data from 2021 and 2022, sourced from journalistic and social media (BuzzSumo, Google Trends, Reddit, and Twitter) as well as the United States Patent and Trademark Office. This latest chapter of the metaverse’s convoluted history reveals a focus not on virtual reality goggles but rather on techno-capitalist notions like digital wallets, crypto-assets, and targeted advertisements. The metaverse’s wallet-holders collect status symbols like limited-edition profile pictures, fashion items for avatars, tradable pets and companions, and real estate. Motivated by the metaverse’s sophisticated antecedents and our empirical findings, we propose a subtle conceptual re-orientation that respects the metaverse’s equivocal nature and rejects sanitised solutionism. Do not let the phantasmagorical goggles distract you too much: Big Meta is watching you, and it expects you to become a wallet-holder. Blockchain proponents want this as well.
1-absorbing and weakly 1-absorbing prime submodules of a module over a noncommutative ring
Authors: Groenewald Nico 
Published: July 2023

AbstractIn this study, we aim to introduce the concepts of 1-absorbing prime submodules and weakly 1-absorbing prime submodules of a unital module over a noncommutative ring with nonzero identity. This is a new class of submodules between prime submodules (weakly prime submodules) and 2-absorbing submodules (weakly 2-absorbing submodules). Let R be a noncommutative ring with a nonzero identity $$1\ne 0$$

1
≠
0

and M an R-module. A proper submdule P of M is said to be a 1-absorbing prime submodule (weakly 1-absorbing prime submodule) if for all nonunits $$x,y\in R$$

x
,
y
∈
R

and $$m\in M$$

m
∈
M

with xRyRm$$\subseteq $$
⊆
P$$(\left\{ 0\right\} \ne $$

(

0

≠

xRyRm$$\subseteq P)$$

⊆
P
)

, then $$xy\in (M:_{R}P)$$

x
y
∈
(
M

:
R

P
)

or $$m\in P$$

m
∈
P

. Various properties and characterizations of these classes of submodules are considered.