bluuebunny/crossref_metadata_2025_split huggingface dataset:
Powers of monomial ideals with characteristic-dependent Betti numbers
Authors: Bolognini Davide , Macchia Antonio , Strazzanti Francesco , Welker Volkmar 
Published: April 2022

AbstractWe explore the dependence of the Betti numbers of monomial ideals on the characteristic of the field. A first observation is that for a fixed prime p either the i-th Betti number of all high enough powers of a monomial ideal differs in characteristic 0 and in characteristic p or it is the same for all high enough powers. In our main results, we provide constructions and explicit examples of monomial ideals all of whose powers have some characteristic-dependent Betti numbers or whose asymptotic regularity depends on the field. We prove that, adding a monomial on new variables to a monomial ideal allows to spread the characteristic dependence to all powers. For any given prime p, this produces an edge ideal such that all its powers have some Betti numbers that are different over $$\mathbb {Q}$$
Q
and over $$\mathbb {Z}_p$$

Z
p

. Moreover, we show that, for every $$r \ge 0$$

r
≥
0

and $$i \ge 3$$

i
≥
3

there is a monomial ideal I such that some coefficient in a degree $$\ge r$$

≥
r

of the Kodiyalam polynomials $${\mathfrak {P}}_3(I),\ldots ,{\mathfrak {P}}_{i+r}(I)$$

P
3

(
I
)

,
…
,

P

i
+
r

(
I
)

depends on the characteristic. We also provide a summary of related results and speculate about the behavior of other combinatorially defined ideals.
A system for electric vehicle’s energy-aware routing in a transportation network through real-time prediction of energy consumption
Authors: Modi Shatrughan , Bhattacharya Jhilik 
Published: April 2022

AbstractTo tackle the problem of range anxiety of a driver of an electric vehicle (EV), it is necessary to accurately estimate the power/energy consumption of EVs in real time, so that drivers can get real-time information about the vehicle’s remaining range. In addition, it can be used for energy-aware routing, i.e., the driver can be provided with information that on which route less energy consumption will take place. In this paper, an integrated system has been proposed which can provide reliable and real-time estimate of the energy consumption for an EV. The approach uses Deep Auto-Encoders (DAE), cross-connected using latent space mapping, which consider historical traffic speed to predict the traffic speed at multiple time steps in future. The predicted traffic speed is used to calculate the future vehicle speed. The vehicle speed, acceleration along with wind speed, road elevation, temperature, battery’s SOC, and auxiliary loads are used as input to a multi-channel Convolutional Neural Network (CNN) to predict the energy consumption. The prediction is further fine-tuned using a Bagged Decision Tree (BDT). Unlike other existing techniques, the proposed system can be easily generalized for other vehicles as it is independent of internal vehicle parameters. Comparison with other benchmark techniques shows that the proposed system performs better and has a least mean absolute percentage error of 1.57%.
Attempting to measure the intensity of opposing feelings in elections: A polarization approach to Catalonia’s independence case
Authors: Maza Adolfo , Hierro María 
Published: April 2022

AbstractThis paper addresses the Catalonian political process for independence. Based on the outcome of the 2017 Catalonian Regional Election, it firstly innovates by building an independence-feeling indicator for each municipality. Subsequently, we resort to the concept of polarization to assess the level of inherent conflict. Besides, we evaluate to what extent polarization can be explained by different variables. Then, in the second part of the paper, we redo the analysis but, to handle the potential aggregation problem that arises with geographically reference data (MAUP problem), we compute for each municipality two (antiindependence-feeling and proindependence-feeling) indicators rather than one. In doing so, we avoid merging votes that offset each other and, by applying the polarization index, we not only test for (inter-) polarization but also (intra-) polarization (within municipalities). The results show important differences. More specifically, although polarization across municipalities is relatively small, there is a high level of polarization within them. Moreover, while population density, Catalan proficiency and place of birth are instrumental when explaining polarization if a single indicator is computed, in the case of two indicators unemployment rate, age and wealth also emerge as remarkable variables, while among the three previous ones the importance of population density decreases.
Integrated weld preparation designs for the joining of L-PBF and conventional components via TIG welding
Authors: Geisen Ole , Müller Vinzenz , Graf Benjamin , Rethmeier Michael 
Published: April 2022

AbstractLaser powder bed fusion (L-PBF) of entire assemblies is not typically practical for technical and economic reasons. The build size limitations and high production costs of L-PBF make it competitive for smaller, highly complex components, while the less complex elements of an assembly are manufactured conventionally. This leads to scenarios that use L-PBF only where it’s beneficial, and it require an integration and joining to form the final product. For example, L-PBF combustion swirlers are welded onto cast parts to produce combustion systems for stationary gas turbines. Today, the welding process requires complex welding fixtures and tack welds to ensure the correct alignment and positioning of the parts for repeatable weld results. In this paper, L-PBF and milled weld preparations are presented as a way to simplify the Tungsten inert gas (TIG) welding of rotationally symmetrical geometries using integrated features for alignment and fixation. Pipe specimens with the proposed designs are manufactured in Inconel 625 using L-PBF and milling. The pipe assembly is tested and TIG welding is performed for validation. 3D scans of the pipes before and after welding are evaluated, and the weld quality is examined via metallography and computed tomography (CT) scans. All welds produced in this study passed the highest evaluation group B according to DIN 5817. Thanks to good component alignment, safe handling, and a stable welding process, the developed designs eliminate the need for part-specific fixtures, simplify the process chain, and increase the process reliability. The results are applicable to a wide range of components with similar requirements.
Improving the fatigue life of printed structures using stochastic variations
Authors: van den Broek Sander , Wolff Johannes , Scheffler Sven , Hühne Christian , Rolfes Raimund 
Published: April 2022

AbstractAdditive manufacturing allows designers to create geometries that would not be possible or economical to manufacture using traditional manufacturing processes. Production with these technologies does, however, introduce a large amount of variation and additional unknowns. These random variations from idealized geometry or material properties can harm the performance of the design. The current work presents an approach to improve the fatigue life of such structures, and simultaneously reduce its influence from random variations in local thickness. Following an initial numerical study, the results are experimentally validated. Experimental results show a significant improvement in fatigue life in the redesigned sample with a tailored thickness distribution.
Economics of the community mechanism
Authors: Ogaki Masao 
Published: April 2022

AbstractThis paper discusses the importance of the community mechanism that complements the market and power mechanisms in an economic system during an era of crisis, defined as a mechanism for resource allocation by which at least one person proposes voluntary cooperation, and the proposal is not rejected. While this community mechanism can function alongside homo economicus in win–win situations, it can be further activated with social preferences for altruism and reciprocity and with norms or worldviews that encourage cooperation. Other factors that relate to these include the character strengths that contribute to community and society known as virtues, with the concept of wellbeing related to virtues being known as eudaimonia. Some aspects of the acquisition of virtues can be viewed as changing preferences, and there is empirical evidence suggesting changes in trust relate to changes in preferences. Leadership is an example of the virtue of justice, and servant leadership seems important for the community mechanism, as does perspective taking. For evaluating policies, normative economics based only on consequentialism may not be sufficient, and virtue ethics seems essential when the community mechanism is important.
The Soliton Wave Solutions and Bifurcations of the (2 + 1)-Dimensional Dissipative Long Wave Equation
Authors: Yang Deniu , Zhang Juan 
Published: April 2022

AbstractWith the help of the bifurcation theory of dynamical differential system and maple software, we shall devote ourselves to research travelling wave solutions and bifurcations of the (2 + 1)-dimensional dissipative long wave equation. The study of travelling wave solutions for long wave equation derives a planar Hamiltonian system. Based on phase portraits, we obtain exact explicit expressions of some bounded traveling wave solutions and some important singular traveling wave solutions, under different parametric conditions.
Paternal investment, stepfather presence and early child development and growth among Serbian Roma
Authors: Čvorović Jelena 
Published: April 2022

Abstract
Research on paternal investment and child growth and development is limited outside of high-income countries. Using nationally representative data from low-resource Serbian Roma communities, this study examined father investment (direct care), its predictors and the associations between paternal investment, stepfather presence and child physical growth and early development. The sample included 1222 children aged 35–59 months, out of which 235 were living with biological fathers. Child outcomes included height-for-age Z-scores, stunting and early child developmental score. Roma paternal investment was relatively low. There was a positive association of father investment and children's height, and no association with developmental score. The presence of father vs. stepfather did not exert any influence on children. Instead, maternal and child characteristics explained both the overall development and height for Roma children. Thus, older children, born to literate, lower parity mothers of higher status and greater investment had better developmental and growth outcomes; girls were the preferred sex, owing to expected fitness benefits. Reverse causality emerged as the most likely pathway through which the cross-sectional association of father direct care with child growth may manifest, such that Roma fathers tend to bias their investment towards taller, more endowed children, because of greater fitness pay-off.
Caught between sovereignty and solidarity? A multidimensional revisitation of EU mass–elite congruence
Authors: Pareschi Andrea , Giglioli M. F. N. , Baldini Gianfranco 
Published: April 2022

AbstractThis article undertakes a critical revisitation of mass–elite congruence on EU matters, taking stock of 30 years of research and addressing durable ambiguities flagged by recent scholarship. Its specific contribution leverages EUEngage elite and mass survey data gathered in 2016 in 10 European countries. Examining congruence at both the country and the party level, we carry out an uncommon multidimensional analysis that encompasses general European integration and certain key sub-dimensions. At both levels, we perform a distinctive systematization of multiple approaches to the assessment of EU issue congruence, probing the substantive consistency of ensuing results. The findings qualify and soften the conventional wisdom of a chasm between pro-European elites and lukewarm citizens. While most countries exhibit pro-EU elite bias in terms of averages and proportions alike, mass–elite alignment is the rule when the general dimension and its sub-dimensions are understood as binary. Party-level analyses display different outcomes, depending on whether party positions are derived from elites' self-placement or their voters' perceptions, yet discrepancies are generally lower than in past assessments. Altogether, ‘constraining dissensus’ chiefly emerges along sub-dimensions concerning decision-making authority, as opposed to sub-dimensions evoking solidarity and burden-sharing. The layered panorama of congruence and incongruence implies a dependence of mass–elite interplays on context and sub-dimensions, drawing attention to the mediating role of critical junctures and elite entrepreneurship.
Effect of maternal employment on child nutritional status in Bale Robe Town, Ethiopia: a comparative cross-sectional analysis
Authors: Ketema Bezawit , Bosha Tafese , Feleke Fentaw Wassie 
Published: April 2022

Abstract
Adequate nutrition is essential for early childhood to ensure healthy growth, proper organ formation, and function, a strong immune system, neurological and cognitive development. The main aim of the present study was to assess the effect of maternal employment on nutritional status among children aged 6–23 months in the town of Bale Robe, Ethiopia. A community-based comparative cross-sectional study was conducted on about 597 (293 unemployed and 304 employed) having children aged 6–23-month-old children sampled were employed with a multistage sampling technique. A face-to-face interview was conducted using a structured pretested questionnaire. Descriptive statistics, binary and multivariable logistic regression analyses were used for the statistical analysis. The magnitude of stunting (39.9 %), underweight (39⋅9 %) and wasting (22⋅2 %) was greater in 6–23-month-old children born to employed mothers than their counterparts in unemployed ones [stunted (31⋅3 %), underweight (24⋅0 %) and wasted (11⋅8 %)]. Being a girl [AOR 0⋅31; 95 % CI (0⋅17, 0⋅54)] in employed mothers and [AOR 0⋅29; 95 % CI (0⋅16, 0⋅51)] in unemployed people significantly protected stunting. This study demonstrated that the nutritional status of 6–23-month-old children is better among unemployed mothers than among employed mothers. Therefore, concerted efforts may decrease child undernutrition in a study area.
The Azerbaijani Diaspora in Turkey: Integration, Reintegration, and the Production of Identity
Authors: Garibova Jala 
Published: April 2022

AbstractThe youngest generation of the Azerbaijani diaspora in Turkey was formed almost immediately after the downfall of the Soviet Union, resulting in the increased emigration of Azerbaijanis to foreign countries, in particular to Turkey, where the language barrier is minimal due to linguistic proximity. This article is an attempt to investigate the dynamics of identity production (and, consequently, senses of belonging) of the most recent generations of the Azerbaijani diaspora in Turkey in relationship to their linguistic and cultural repertoires. While language and culture are key factors in identity production, linguistic and cultural practices may be influenced by various social factors. I have therefore tried to examine the identity paradigms of Azerbaijanis living in Turkey in the frameworks of their ethno-national, socio-cultural, and socio-communicative perceptions. The survey I conducted for this purpose mostly covers post-Soviet immigrants to Turkey and, to a lesser extent, earlier generations of Azerbaijanis who settled in Turkey during Soviet times.
The chondrichthyan fossil record of the Florida Platform (Eocene–Pleistocene)
Authors: Perez Victor J. 
Published: April 2022

AbstractAs of September 2019, the Florida Museum of Natural History (FLMNH) had a curated collection of 117,449 chondrichthyan specimens from Florida, spanning the Eocene through the Pleistocene. Herein, I evaluate the completeness of the chondrichthyan fossil record from Florida based on the FLMNH collection, while analyzing patterns in taxonomic and ecomorphological diversity. At least 70 chondrichthyan taxa were recognized, representing 10 orders, 26 families, and 42 genera; of which, 20 taxa represent first occurrences from Florida. A sample of 107,698 specimens was organized into 12 time bins to analyze taxonomic and ecomorphological diversity, with an expectation that diversity patterns would correspond with global climate events (e.g., the Eocene–Oligocene transition and the middle Miocene climatic optimum). However, diversity patterns were obscured by pervasive sampling bias, attributable to variable collection methods, research prioritizations, and regional lithologic controls. Sampling is particularly poor for smaller specimens and older geologic units (e.g., the Paleogene). Despite incomplete sampling of the Florida chondrichthyan fossil record, there was an apparent turnover along the Atlantic and Gulf Coastal Plains from a lamniform- to carcharhiniform-dominated chondrichthyan fauna that occurred during the Eocene. This turnover corresponded with the extinction of many lamniform taxa with grasping-dominated dentition types (e.g.,Brachycarcharias,Jaekelotodus, andMacrorhizodus). Selachian taxa that survived the late Eocene extinctions were predominantly represented by cutting-dominant dentition types. As cutting aids in the dismemberment of prey, this may reflect a macroevolutionary trend toward active predation and scavenging on larger prey, such as marine mammals, teleost fish, and other sharks.
Performance of loop-mediated isothermal amplification (LAMP) for detection of Schistosoma mansoni infection compared with Kato–Katz and real-time PCR
Authors: Allam A.F. , Kamel M.A.-N. , Farag H.F. , Raheem H.G. , Shehab A.Y. , Hagras N.A.-E. 
Published: April 2022

Abstract
The performance of loop-mediated isothermal amplification (LAMP) for detection of Schistosoma mansoni DNA from stool and urine samples in comparison with Kato–Katz and real-time polymerase chain reaction (PCR) was studied. After obtaining informed consent, 50 children participated in the present study and agreed to submit stool and urine samples. Stool samples were examined by Kato–Katz. Both real-time PCR and LAMP techniques were applied on stool and urine samples. The overall prevalence of S. mansoni was 46% in stool and urine samples as detected by the employed techniques, and 90% of cases had light infection intensity. The highest percentage of infection was diagnosed by real-time PCR (44%), followed by Kato–Katz (42%) and LAMP in the stool (36%), while the lowest percentages of infection were diagnosed by real-time PCR and LAMP in urine samples (24% and 14%, respectively). Kato–Katz, real-time PCR and LAMP showed 100% specificity where the sensitivity was 91.3%, 95.7% and 78.3%, respectively, in stool samples. Real-time PCR and LAMP showed lower sensitivity in urine samples. The LAMP assay is a promising technique for S. mansoni diagnosis in endemic countries of moderate and high-intensity infection. Yet, it needs further optimization, particularly in urine samples.
Compositional and functional features of the gut microbiota of the intertidal snailNerita yoldiialong China's coast
Authors: Zhu Ya-Jie , Liao Ming-Ling , Ding Meng-Wen , Wang Zhao-Kai , Dong Yun-Wei 
Published: April 2022

AbstractThe gut microbiota plays an important role in animals’ survival in their local environments. The intertidal rocky shore is a key interface of oceanic, atmospheric and terrestrial environments, and the transmission modes of microbes between an intertidal host and the environment are complex and largely ignored. In the present study, we characterized the gut microbiota of the intertidal snailNerita yoldii, which is experiencing a northward range shift under the combined impacts of climate change and anthropogenic seascape transformation, and also determined the nearby environmental microbiota on the rock and in the seawater at five locations along the snail's distribution range in China. The gut microbial communities were significantly different from the environmental microbial communities, and the dominant phyla were Tenericutes, Cyanobacteria and Bacteroidetes, and Proteobacteria in the gut, rock and seawater microbial communities, respectively. At the genus level,Mycoplasma, with a relative abundance of 48.0 ± 10.2%, was the dominant genus in the gut microbial community, however, the relative abundances of this genus on the rock and in the water were low. These results imply that the gut microbial community of the intertidal snailN. yoldiiis relatively independent from the environmental microbial community, and the dominant genusMycoplasmain the gut, that is rare in the environment, can potentially assist the snail living in the harsh intertidal environment, especially at its northernmost distribution range edge.
Peacemaking in a shifting world order: A macro-level analysis of UN mediation in Syria
Authors: Hellmüller Sara 
Published: April 2022

AbstractFailures to bring internationalised civil wars, such as in Syria, Libya, or Yemen, to a negotiated agreement have led to a questioning of the UN's role in peacemaking. The literature explains such mediation outcomes by examining micro-level aspects pertaining to either the mediation process or the conflict context. While both are important, they are influenced by macro-level dynamics related to world politics that have received less attention. Yet, such an awareness of the structural context in which mediation takes place is particularly relevant in times of tectonic shifts in world politics, such as the current change in world order from unipolarity to multipolarity. This article fills this gap by exploring the mechanisms through which macro- and micro-level factors interact in mediation, illustrated by the case of the UN mediation in Syria. The article thereby makes two contributions. First, it provides an analysis of the link between world politics and UN mediation by complementing micro-level explanations with a macro-level perspective. Second, it allows for a better understanding of UN mediation in internationalised civil wars, and particularly in Syria. Overall, the article contributes to reflections on how the UN can keep its relevance in peacemaking in a shifting world order.
Detection of abnormal ship trajectory based on the complex polygon
Authors: Weng Jinxian , Li Guorong , Zhao Yahui 
Published: April 2022

AbstractShip anomaly detection is a vital aspect for monitoring navigational safety in specific water areas. Considering the effect of water channel boundaries, we propose the detection of an abnormal ship trajectory based on the complex polygon (DATCP) method to detect ship anomalies in this study. With the automatic identification systems (AIS) data from the Yangtze River estuary, a case study is created to verify the effectiveness of the proposed DATCP method. The case study results reveal that the proposed DATCP method can provide higher detection accuracy than the conventional A* algorithm. The feature analysis results indicate that ship anomalies are significantly influenced by ship type, time period, weather conditions and ship traffic characteristics.