bluuebunny/crossref_metadata_2025_split huggingface dataset:
Entwinement as a possible alternative to complexity
Authors: Erdmenger Johanna , Gerbershagen Marius 
Published: March 2020

Abstract
Unlike the standard entanglement entropy considered in the holographic con- text, entwinement measures entanglement between degrees of freedom that are not associated to a spatial subregion. Entwinement is defined for two-dimensional CFTs with a discrete ℤN gauge symmetry. Since the Hilbert space of these CFTs does not factorize into tensor products, even the entanglement entropy associated to a spatial subregion cannot be defined as the von Neumann entropy of a reduced density matrix. While earlier works considered embedding the density matrix into a larger, factorizing Hilbert space, we apply a gauge invariant approach by using a density matrix uniquely defined through its relation to the local algebra of observables. We furthermore obtain a fully gauge invariant definition of entwinement valid for general CFTs with ℤN gauge symmetry in terms of all observables acting on the degrees of freedom considered. Holographically, entwinement is dual to the length of non-minimal geodesics present for conical defects or black holes. In this context, we propose a definition of entwinement for thermal states dual to the BTZ black hole. Our results show that “entwinement is enough” to describe the full bulk geometry for the conical defect and provide strong hints that the same holds true for the BTZ black hole. Thus, it provides an alternative to holographic complexity for the theories considered.
Tödliche Hirnmassenblutung infolge Vitamin-K-Mangels bei einem 9 Wochen alten Säugling
Authors: Bohnert S. , Monoranu C.-M. , Siauw C. , Al-Tinawi F. , Bohnert M. 
Published: March 2020

ZusammenfassungIntrakranielle Blutungen sind im Säuglingsalter seltene, aber lebensbedrohende Ereignisse. Neben Gefäßmissbildungen, Stoffwechseldefekten sowie Störungen der Blutgerinnung kommen v. a. nichtakzidentielle Traumata, Schütteltrauma in Betracht. Die klinische Diagnostik umfasst hinsichtlich der Blutungsgenese neben Sonographie und MRT als apparatives Verfahren auch eine Fundoskopie sowie laborchemische Analysen, insbesondere der Gerinnungsparameter. Für die Blutgerinnung ist das fettlösliche Vitamin K essenziell: Frühe, klassische und späte Vitamin-K-Mangel-Blutungen werden dabei unterschieden. Um ein gehäuftes Wiederauftreten von Vitamin-K-Mangel-Blutungen bei Neugeborenen und jungen Säuglingen zu verhindern, bedarf es einer hinreichenden Aufklärung der Eltern. Eine Verweigerung der Prophylaxe scheint Folge einer weltanschaulich begründeten Ablehnung der Schulmedizin und ein zunehmendes Phänomen in wohlhabenden Industrieländern zu sein.
Production of multiple bacteriocins, including the novel bacteriocin gassericin M, by Lactobacillus gasseri LM19, a strain isolated from human milk
Authors: Garcia-Gutierrez Enriqueta , O’Connor Paula M. , Colquhoun Ian J. , Vior Natalia M. , Rodríguez Juan Miguel , Mayer Melinda J. , Cotter Paul D. , Narbad Arjan 
Published: March 2020

AbstractBacteriocins are antimicrobial peptides produced by bacteria, and their production is regarded as a desirable probiotic trait. We found that Lactobacillus gasseri LM19, a strain isolated from human milk, produces several bacteriocins, including a novel bacteriocin, gassericin M. These bacteriocins were purified from culture and synthesised to investigate their activity and potential synergy. L. gasseri LM19 was tested in a complex environment mimicking human colon conditions; it not only survived, but expressed the seven bacteriocin genes and produced short-chain fatty acids. Metagenomic analysis of these in vitro colon cultures showed that co-inoculation of L. gasseri LM19 with Clostridium perfringens gave 16S ribosomal RNA metagenomic profiles with more similarity to controls than to vessels inoculated with C. perfringens alone. These results indicate that L. gasseri LM19 could be an interesting candidate for maintaining homeostasis in the gut environment.
On the Existence of Schur-like Forms for Matrices with Symmetry Structures
Authors: Mehl Christian 
Published: March 2020

AbstractSchur-like forms are developed for matrices that have a symmetry structure with respect to an indefinite inner product induced by a Hermitian and unitary Gram matrix. It is characterized under which conditions these forms can be computed by structure-preserving unitary transformations. The main results combines and generalizes the two well-known results from the literature that on the one hand any normal matrix can be unitarily diagonalized and on the other hand a Hamiltonian matrix can be transformed to Hamiltonian Schur form via a unitary similarity transformation if and only if its purely imaginary eigenvalues satisfy certain conditions that involve the sign characteristic of the matrix under consideration.
Aggregation of the nearest consistency matrices with the acceptable consensus in AHP-GDM
Authors: Lin Changsheng , Kou Gang , Peng Yi , Alsaadi Fawaz E. 
Published: March 2020

AbstractAnalytic hierarchy process (AHP) is widely used in group decision making (GDM). There are two traditional aggregation methods for the collective preference in AHP-GDM: aggregation of the individual judgments (AIJ) and aggregation of the individual priorities (AIP). However, AHP-GDM is sometimes less reliable only under the condition of AIJ and AIP because of the consensus and consistency of the individual pair-wise comparison matrices (PCMs) and prioritization methods. In this paper, we propose aggregation of the nearest consistent matrices (ANCM) with the acceptable consensus in AHP-GDM, simultaneously considering the consensus and consistency of the individual PCMs. ANCM is independent of prioritization methods while complying with the Pareto principal of social choice theory. Moreover, ANCM is easy to program and implement in resolving highly complex group decision making problems. Finally, two numerical examples illustrate the applications and advantages of the proposed ANCM.
Daily Worry in Trauma-Exposed Afghan Refugees: Relationship with Affect and Sleep in a Study Using Ecological Momentary Assessment
Authors: Koch Theresa , Liedl Alexandra , Takano Keisuke , Ehring Thomas 
Published: March 2020

Abstract
Background
Repetitive negative thinking—and worry as a common variant—have been suggested to be transdiagnostic maintaining factors of psychopathology in refugees. Using an ecological momentary assessment (EMA) approach, this study tested the feasibility of EMA and the hypothesis of a self-reinforcing relationship (a) between worry and affect and (b) between worry and sleep in refugees. Additionally, we examined whether worry interacts with postmigration stress to impact on affect and sleep.

Methods
For 1 week, 45 trauma-exposed Afghan refugees received five prompts per day asking them to report on momentary levels of worrying and negative as well as positive affect. In addition, sleep quality was assessed in the morning and the occurrence of postmigration stress at night.

Results
Our findings did not indicate a bidirectional relationships (a) between worry and affective experiences and (b) between worry and poor sleep quality. However, worry experienced on a given day predicted increased negative affect on the next day; in turn, positive affect predicted decreased worrying on the next day. Hypotheses on the interaction between worry and stress in predicting affect and sleep were not supported.

Conclusion
These preliminary findings suggest unidirectional effects of daily worry on negative affect and positive affect on daily worry. However, the low compliance rate and the small sample size precludes drawing firm conclusions. Implications for further EMA research among refugees are discussed.
Understanding students’ game experiences throughout the developmental process of the number navigation game
Authors: Bui Phuong , Rodríguez-Aflecht Gabriela , Brezovszky Boglárka , Hannula-Sormunen Minna M. , Laato Samuli , Lehtinen Erno 
Published: March 2020

AbstractSerious games for learning have received increased attention in recent years. However, empirical studies on students’ gaming experiences throughout the developmental process of serious games and discussions regarding game design are missing. The aims of the present study were to analyze students’ gaming experiences while playing four consecutive versions of the Number Navigation Game (NNG)—a mathematical game-based learning environment focusing on flexibility and adaptivity with whole-number arithmetic; and to provide an extensive review of the NNG developmental and design process over 3 years with focus on how and why the design decisions were made, and how those choices affected students’ gaming experiences. The study employed a mixed-methods design of quantitative and qualitative research. The Game Experience Questionnaire about eight core game experience dimensions was answered by different groups of students at primary schools in Finland in three different experiments after students played four versions of the NNG from 2014 to 2016. Six semi structured interviews related to students’ game experiences, preferences and game features of the latest version of NNG were conducted. Overall, results indicate that improvement in game’s usability and clarity in the user interface has positive impacts on students’ game experiences. Furthermore, there seems to be a clear advantage in having better aesthetics and value in improving extrinsic elements that could contribute to maintain players’ enthusiasm and situational interest in serious games.
Systemkombinierende untertägige Pumpspeicherkraftwerke für eine integrative und effiziente Energietransformation
Authors: Pikl Franz Georg , Richter Wolfgang , Zenz Gerald 
Published: March 2020

ZusammenfassungPumpspeicherkraftwerke sind ein effizientes und langlebiges Nonplusultra für ausgeglichene und stabile elektrische Energiesysteme. Unterirdische Pumpspeicherkraftwerke werden zum vielversprechenden Ansatz zur Bewältigung verschiedener Herausforderungen und ermöglichen zudem vollkommen neue und in mehrfacher Weise einsetzbare Anlagenkonzepte. Thermische Pumpspeicherkraftwerke als mechanisch und thermisch kombinierte Energiespeicher bilden die innovative technologische Evolution für eine universelle und ressourceneffiziente, regenerative Energieversorgung.
The token’s secret: the two-faced financial incentive of the token economy
Authors: Drasch Benedict J. , Fridgen Gilbert , Manner-Romberg Tobias , Nolting Fenja M. , Radszuwill Sven 
Published: March 2020

AbstractMulti-sided platforms are omnipresent in today’s digital world. However, establishing a platform includes challenges: The platform utility usually increases with the number of participants. At an early stage, potential participants expect the platform utility to be low and lack an incentive to join (i.e., “chicken and egg” problem). Blockchain-enabled utility tokens hold the promise to overcome this problem. They supposedly provide a suitable financial incentive for their owners to join the platform as soon as possible. In the first half of 2018, investors seemed to believe in the presumption and spent more than US$ 17.6 billion in token sales. To date, we know little about this financial incentive in the context of the token economy. For this purpose, we model the token value development and the associated incentives in a multi-sided blockchain-enabled platform. The resulting findings suggest that blockchain-enabled utility tokens can help to overcome the “chicken and egg” problem. However, these tokens lead to contradictory incentives for platform participants, and can even inhibit platform usage. The contribution of our work is twofold: First, we develop one of the first models for token value development. Second, our research contributes to a deeper understanding of the utility token’s financial incentive.
On inharmonicity in bass guitar strings with application to tapered and lumped constructions
Authors: Kemp Jonathan A. 
Published: March 2020

AbstractIn this study, the inharmonicity of bass guitar strings with and without areas of lowered and raised mass near the saddle is studied. Using a very high sample rate of over 900 kHz enabled finite difference time domain simulation to be applied for strings that simultaneously have nonzero stiffness and linear density which varies along the length of the string. Results are compared to experiments on specially constructed strings. Perturbation theory is demonstrated to be sufficiently accurate (and much more computationally efficient) for practical design purposes in reducing inharmonicity. The subject of inharmonicity is well known in pianos but has not been studied extensively in bass guitar strings. Here, the inharmonicity is found to be low in the lowest (open string) pitch on the five string bass guitar ($${B}_0$$B0) given typical standard construction. Conversely, the inharmonicity is high (around 100 cents at the 10th partial) when that string is sounded when stopped at the 12th fret and very high (around 100 cents at the 6th partial) when that string is stopped at the 21st fret. Bass guitar strings were constructed with three different constructions (standard, tapered and lumped) in order to demonstrate how incorporating a lump of raised mass near the saddle can achieve close to zero inharmonicity for the lower frequency partials. This also has potential in terms of improving the use of higher fret numbers for musical harmony (reducing beating) and also in controlling pitch glide that has, with some exceptions, often been attributed solely to nonlinear behaviour.
Relationship between interference control and working memory with academic performance in high school students: The Adolescent Student Academic Performance longitudinal study (ASAP)
Authors: Dubuc Marie‐Maude , Aubertin‐Leheudre Mylène , Karelis Antony D. 
Published: March 2020

ABSTRACTIntroductionThe purpose of this study was to explore the relationship between interference control and working memory with academic performance in both female and male high school students using a longitudinal design.MethodsOne hundred and eighty‐seven grade seventh to ninth students (mean age: 13.1 ± 1.0 years old) from a French‐Canadian high school located in Montreal, Canada, completed a 3‐year prospective study. Interference control (Flanker task), working memory (N‐back task) and academic performance (grades in science, mathematics, language and the overall average) were assessed every year during the 3‐year study.ResultsFemale students had significantly higher grades than male students for overall average, science and language at year 1 as well as higher grades for overall average and language at year 3 (p < 0.05). However, no differences were found between genders for any measures of interference control or working memory at year 1 and 3. Furthermore, we noted that the relations between cognitive control with our academic performance measures differ according to gender. Finally, our results showed that neither interference control nor working memory seem to be the primary predictor for any of our academic performance measures in both female and male students.ConclusionsResults of the present study indicate that cognitive control measures were not able to explain the gender differences in academic performance. Our results also show that interference control and working memory were weakly related to academic performance and that these associations had a poor ability to predict variations in academic performance during a 3‐year period.
SPOT-Disorder2: Improved Protein Intrinsic Disorder Prediction by Ensembled Deep Learning
Authors: Hanson Jack , Paliwal Kuldip K. , Litfin Thomas , Zhou Yaoqi 
Published: March 2020

Abstract
Intrinsically disordered or unstructured proteins (or regions in proteins) have been found to be important in a wide range of biological functions and implicated in many diseases. Due to the high cost and low efficiency of experimental determination of intrinsic disorder and the exponential increase of unannotated protein sequences, developing complementary computational prediction methods has been an active area of research for several decades. Here, we employed an ensemble of deep Squeeze-and-Excitation residual inception and long short-term memory (LSTM) networks for predicting protein intrinsic disorder with input from evolutionary information and predicted one-dimensional structural properties. The method, called SPOT-Disorder2, offers substantial and consistent improvement not only over our previous technique based on LSTM networks alone, but also over other state-of-the-art techniques in three independent tests with different ratios of disordered to ordered amino acid residues, and for sequences with either rich or limited evolutionary information. More importantly, semi-disordered regions predicted in SPOT-Disorder2 are more accurate in identifying molecular recognition features (MoRFs) than methods directly designed for MoRFs prediction. SPOT-Disorder2 is available as a web server and as a standalone program at https://sparks-lab.org/server/spot-disorder2/.
Runaway Slaves in Antebellum Baltimore: An Urban Form of Marronage?
Authors: Müller Viola Franziska 
Published: March 2020

AbstractThe starting point of this article is the observation that thousands of enslaved people escaped bondage and managed to find refuge in the city of Baltimore between 1800 and 1860. There, they integrated into a large free black community. Given the use of the term “urban marronage” to categorize slave flight to cities in some historical literature, this chapter discusses the concept of marronage and its applicability to the urban context of antebellum Baltimore. It examines individual escapees from slavery, the communities they joined, and the broader slaveholding society to emphasize that the interplay and mutual relations of all three should be considered when assessing the applicability of this concept. Discussing the historiography around marronage and the arguments that speak both in favour of and against applying the concept of urban maroons to Baltimore's runaway slaves, this article ultimately dismisses its suitability for this case. In the process, this examination reveals the core of the concept, which, above all, concerns the aspect of resistance. In this context, it will be argued that resistance in the sense of rejecting the control of the dominant society should be included in the general definition of marronage.
What was ‘Indian’ Political Economy? On the separation of the ‘social’, the ‘economic’, and the ‘ethical’ in Indian nationalist thought, 1892–1948
Authors: KARAK ANIRBAN 
Published: March 2020

AbstractThis article argues that to gauge the significance of state planning in mid-twentieth century India, it is necessary to study the trajectory of what was called ‘Indian political economy’ during the late nineteenth century and first half of the twentieth. Through a close reading of selected texts, I demonstrate that the transmutation of Indian political economy into an abstract science of economics was a function of Indian nationalists’ inability to hold together the ‘social’, ‘economic’, and ‘ethical’ spheres within a single conceptual framework. The separation of these three spheres was the enabling factor behind the conceptualization of planning as a purely technical process of economic management. Further, the article contends that these conceptual developments cannot be adequately explained with reference to either ‘elite’ interests or the insidious effects of ‘colonial’ discourses. Rather, the narrative demonstrates that economic abstractions can—and must—be grounded in the historical development of capitalist social forms that transformed the internal fabric of Indian society. Drawing on a theory of capitalism as a historically specific form of social mediation, I argue that a Marxian social history of Indian state planning can overcome certain limitations inherent in extant approaches. Finally, the interpretation proposed here opens up the possibility of putting Indian history in conversation with a broader development during the first half of the twentieth century, namely the separation of political economy into economics and sociology.
The impact of long-term moderate level of vaccination coverage for epidemiology of varicella in Lu'an, China: should we change immunisation strategy now?
Authors: Qin Wei , Meng Xiangmei , Zhang Liang , Wang Yao , Xu Xiaokang , Li Kaichun , Xie Shaoyu 
Published: March 2020

Abstract
As China implements the voluntary vaccination programme of one-dose of varicella vaccine (VarV) for decades, robust estimates of the impact of voluntary vaccination era on epidemiology of varicella are needed. We estimated the vaccination coverage (VC) of VarV by using surveillance data on immunisation. The descriptive epidemiological method was used to describe the changing epidemiology of varicella from 2007 to 2018. The screening method was used to estimate the vaccine effectiveness (VE) of VarV. The overall VC for VarV was 71.7%, ranged from 47.7% to 79.5% among 2008–2017 birth cohorts. In total, 16 660 varicella cases were reported during 2007–2018, the incidence increased from 10.0 cases per 100 000 population in 2007 to 65.2 cases per 100 000 population in 2018. A shift in age group of varicella was observed since 2012, with the age increased from 5–9 years to 10–14 years. The overall VE was 79.9%, and the VE increased from 60.1% in 2008 birth cohort to 96.2% in 2017 birth cohort. We found that the overall VE for VarV is moderate, but appears highly effective within 5 years after vaccination. In addition, a shift varicella infection to older ages has occurred at the long-term moderate level VC of one-dose VarV. Therefore, to contain the incidence of varicella and prevent any potential shift to older ages, the introduction of VarV into routine immunisation programme is likely needed in Lu'an.
Drift of Pancake Ice Floes in the Winter Antarctic Marginal Ice Zone During Polar Cyclones
Authors: Alberello Alberto , Bennetts Luke , Heil Petra , Eayrs Clare , Vichi Marcello , MacHutchon Keith , Onorato Miguel , Toffoli Alessandro 
Published: March 2020

AbstractHigh temporal resolution in situ measurements of pancake ice drift are presented, from a pair of buoys deployed on floes in the Antarctic marginal ice zone during the winter sea ice expansion, over 9 days in which the region was impacted by four polar cyclones. Concomitant measurements of wave‐in‐ice activity from the buoys are used to infer that the ice remained unconsolidated, and pancake ice conditions were maintained over at least the first 7 days. Analysis of the data shows (i) the fastest reported ice drift speeds in the Southern Ocean; (ii) high correlation of drift velocities with the surface wind velocities, indicating absence of internal ice stresses >100 km from the ice edge where remotely sensed ice concentration is 100%; and (iii) presence of a strong inertial signature with a 13 hr period. A Lagrangian free drift model is developed, including a term for geostrophic currents that reproduce the 13 hr period signature in the ice motion. The calibrated model provides accurate predictions of the ice drift for up to 2 days, and the calibrated parameters provide estimates of wind and ocean drag for pancake floes under storm conditions.