bluuebunny/crossref_metadata_2025_split huggingface dataset:
Seismic performance of RC frame buildings accounting for the out-of-plane behavior of masonry infills
Authors: Gesualdi G. , Viggiani L. R. S. , Cardone D. 
Published: July 2020

AbstractPast earthquakes have repeatedly shown that damage to masonry infills can produce large economic losses and even jeopardize human lives. Nevertheless, in current design practice masonry infills are ignored, while available macro-models for nonlinear analysis focus the attention on the In-Plane (IP) behavior of masonry infills only, while neglecting the Out-Of-Plane (OOP) collapse mechanism. The main objective of this study is to investigate the seismic performance of RC frame buildings accounting for the interaction between IP and OOP behavior of masonry infills. To this end, a suitable nonlinear model, able to capture the IP stiffness and strength reduction due to the OOP displacement demand (and vice versa) is implemented. The selected model incorporates a routine that removes infills from the structural model when either IP or OOP collapse occurs. Different building models, representative of typical residential buildings, realized in Italy (and other European countries) from 50’s to 90’s, are examined through nonlinear response-time history analysis at different earthquake intensity levels, with return period ranging from 30 to 5000 years. Two alternative infill configurations (single layer and double layer with inner cavity) are considered, in accordance with the construction practice of the time. The comparison between the models with and without IP/OOP interaction points out the relevance of the OOP behavior towards an accurate evaluation of the seismic performance of RC frame buildings. A set of fragility curves is tentatively proposed, for different building performance levels, ranging from immediate occupancy to life safety.
Asymptotics of Nahm sums at roots of unity
Authors: Garoufalidis Stavros , Zagier Don 
Published: July 2020

AbstractWe give a formula for the radial asymptotics to all orders of the special q-hypergeometric series known as Nahm sums at complex roots of unity. This result is used in Calegari et al. (Bloch groups, algebraic K-theory, units and Nahm’s conjecture. arXiv:1712.04887, 2017) to prove Nahm’s conjecture relating the modularity of Nahm sums to the vanishing of a certain invariant in K-theory. The power series occurring in our asymptotic formula are identical to the conjectured asymptotics of the Kashaev invariant of a knot once we convert Neumann–Zagier data into Nahm data, suggesting a deep connection between asymptotics of quantum knot invariants and asymptotics of Nahm sums that will be discussed further in a subsequent publication.
Power Struggle or Strengthening the Party: Perspectives on Xi Jinping’s Anticorruption Campaign
Authors: Kautz Carolin 
Published: July 2020

AbstractThis review essay analyzes the literature dealing with Xi Jinping’s anticorruption campaign. It identifies two major debates in the literature that see the campaign either as an inner-Party power struggle or as a genuine attempt to deal with the problem of corruption and organizational issues the Party is facing. In a second step, the review essay links these two understandings to larger trends in the understanding of the Chinese Communist Party in the literature. These understandings focus either on elite politics and theories of factionalism or connect to the larger debate on the decline versus resilience of the Party. It concludes that different understandings of Xi’s campaign are not mutually exclusive but adopt different points of focus and are rooted in different debates on the Chinese Communist Party.
Entwicklung eines Fragebogens für softwareentwickelnde Unternehmen zur internen Bestimmung des agilen Reifegrads
Authors: Jungnickel Katharina , Minge Michael , Thüring Manfred 
Published: July 2020

ZusammenfassungIn diesem Beitrag der Zeitschrift Gruppe. Interaktion. Organisation. (GIO) wird die Entwicklung und Validierung eines Fragebogens zur Ermittlung des agilen Reifegrads eines Softwareunternehmens auf Basis der Einschätzung seiner Mitarbeitenden vorgestellt. Agilität ist mittlerweile ein zentrales Thema für viele Firmen, insbesondere in der Softwarebranche. Die Gründe hierfür liegen in der hohen Volatilität der Märkte, der weltweit fortschreitenden Digitalisierung, der globalen Vernetzung der Wertschöpfungsketten und dem Zwang zu kürzeren Innovationszyklen. Dieser Entwicklung kann man mit den herkömmlichen, kaskadierenden Entwicklungsmethoden nicht mehr Rechnung tragen, so dass sie zunehmend durch agile Ansätze abgelöst werden. Agile Vorgehensweisen ermöglichen es, komplexe Anforderungen zu bearbeiten und flexibel auf Veränderungen zu reagieren. Trotz ihrer Vorteile stellt die Umsetzung agiler Prinzipien viele Unternehmen allerdings vor große Herausforderungen. Entscheidend für den Erfolg von Agilität ist nicht nur die Einführung bestimmter Methoden und Techniken, sondern insbesondere auch deren Wahrnehmung und subjektive Bewertung durch die Mitarbeitenden. Um subjektive Sichtweisen und Urteile erfassen zu können, ein Fragebogen vorgestellt, der von Mitarbeitenden ausgefüllt werden kann und der den intern wahrgenommenen agilen Reifegrad des Unternehmens repräsentiert. Da er über Abteilungen und Hierarchieebenen hinweg einsetzbar ist, liefert er ein differenziertes Bild zu geteilten Werten aber auch zu Unterschieden in der Belegschaft. Hiervon ausgehend lassen sich Maßnahmen konzipieren, die die Agilisierung des Unternehmens weiter vorantreiben. Die Anforderungen an den Fragebogen wurden aus Publikationen zu agilen Reifegradmodellen und dem Agilen Manifest abgeleitet. Darauf aufbauend wurde ein Itempool von zunächst 128 Items generiert. Nach Interviews mit sechs Fachexpert*innen wurde dieser Pool auf 53 Items reduziert. Im Rahmen einer Online-Umfrage sind diese 53 Items auf einer jeweils 7‑stufigen Likert-Skala durch 200 Personen beantwortet worden. Durch eine Hauptkomponentenanalyse mit Varimax-Rotation ist eine fünfdimensionale Variante mit 26 Items entstanden, die für eine interne Einschätzung des agilen Reifegrades verwendet werden kann. Zukünftige Arbeiten gelten der weiteren Optimierung des Instruments.
Applications of metaplectic cohomology and global-local contact holonomy
Authors: Schempp Walter J. 
Published: July 2020

AbstractThe purpose of the paper is to elucidate by global-dual contact holonomy why one might expect the Foucault spherical pendulum’s spin echo-stabilized, symplectic swing-plane through the rotation axis of the spinning earth to follow a parallel vector field as time passes at a velocity depending on the latitude of the swivel’s location. The spinor geometric foundations of the paradigmatic Foucault spherical pendulum experiment of global-local contact holonomy exploit Hopf–Rinow type minimizing geodesic trajectories which appear as inertial traces designed by swing-planes on the terrestrial circular floor panel which is situated beneath the covariant motion of the oscillating pendulum device and where the linear traces are designing diameters of the spin structure induced Poincaré conformal hyperbolic open disc model. The quantum field theoretical evidence of the existence and uniqueness of categorizing parallel vector fields around smooth loops follows in terms of the open-book foliation with Hilbert space structures placed on the covariant pages.
Slope Management Survey by Comparative Study of the Anbalagan and SAS Methods in Precinct 20, Putrajaya, Malaysia
Authors: Mukhlisin Muhammad , Zainal Nur Syahira 
Published: July 2020

Abstract
A landslide occurred on 22 March 2007 in Precinct 9, Putrajaya, Malaysia, burying 27 cars and forcing the evacuation of about 1,200 people. There are some slopes in Putrajaya area that need to be observed to ensure the safety value of the slope. This study was performed in order to ensure the safety of the slope in Precinct 20, Putrajaya, because the location of the slope is quite close to an area of apartments and housing. The main purpose of this slope evaluation comparison of the Anbalagan and SAS (Slope Assessment System) methods in Precinct 20, Putrajaya, is to find the effectiveness of the slope evaluation method and to observe the changes of the slopes in 2012. A slope and landslide inventory system is established to help the team responsible for enhancing the slope management in Putrajaya especially for future development. The five slopes in Precinct 20, Putrajaya, were visited to detect slope distress, which is the major potential of landslide. Aerial photos were collected and an airborne survey was carried out to provide basic information for the slope and landslide inventory as well as to produce a base map and spatial layers for the slope hazard analysis. Therefore, geological and geotechnical studies and observation were done at the chosen sites to compare the data results from the Anbalagan method and the SAS method to find out their effectiveness and relevant that is applicable to this area. The results show that the SAS and Anbalagan methods can be used to evaluate the same slope although these methods use different approaches. The parameters for the SAS method are more related to the geometry of the slope while the Anbalagan parameters are more related to geological factors.
Integrated Hydrogeological and Hydrochemical Studies in an Agri-horticulture Intensive Watershed at Narkhed, Nagpur, Maharashtra and Pandhurna, Chindwara, Madhya Pradesh - A Case Study from Central India
Authors: Quamar Rafat , Mishra Ashutosh Kumar , Janipella Ramesh , Pujari Paras R. , Padmakar Chintalapudi , Balwant Pandurang , Dhyani Shalini , Deshpande Leena , Verma Parikshit , Jyothi Veligeti 
Published: July 2020

Abstract
The present study is an attempt to investigate the impact of intensive agriculture and horticulture activities on the hydrogeological and hydrochemical regime in a watershed in Central India. The study area covers 137 km2 and the land use land cover (LULC) study shows that 39.72% area is agri-horticulture land, and 29.78% of the land is covered with other vegetation. Groundwater budgeting is aimed to estimate stage of groundwater development and to examine the contribution of different competing users (domestic, agriculture and industries) on groundwater usage. The groundwater budgeting results show that the stage of groundwater development is 100.26%, thus the study area falls under the over-exploited category as per GEC 2015 norms. The groundwater quality indicates the elevated concentration of nitrate (&gt;45 mg/L) in 41% samples of pre-monsoon season and 80% samples in the post-monsoon season. The elevated concentration of nitrate in groundwater samples of the post-monsoon season indicates the contamination due to the non-point sources like excessive use of fertilizers in horti-agriculture. The sodium adsorption ratio (SAR) values indicate that groundwater is suitable for irrigation. However, physico-chemical water quality results show that 74% samples of pre-monsoon and 85% samples of the post-monsoon season are found unsuitable for drinking as compared to acceptable limits of drinking water specification BIS 10500:2012.
The study area needs intervention measures both on the supply side and demand side to bring the development stage and water quality to safer limits. Long term mitigation strategies for the revival of the natural streams should also be adopted to increase water availability in the study area. Precision agriculture, promotion of organic farming, minimization of water use, soil amendments for soil moisture retention and prevention of the runoff must be included in the management practices to improve the health of the watershed and for the long term sustainability.
A Methodology for Runtime Detection and Extraction of Threat Patterns
Authors: Bellas Christos , Naskos Athanasios , Kougka Georgia , Vlahavas George , Gounaris Anastasios , Vakali Athena , Papadopoulos Apostolos , Biliri Evmorfia , Bountouni Nefeli , Granadillo Gustavo Gonzalez 
Published: July 2020

AbstractAs the confidentiality and integrity of modern health infrastructures is threatened by intrusions and real-time attacks related to privacy and cyber-security, there is a need for proposing novel methodologies to predict future incidents and identify new threat patterns. The main scope of this article is to propose an advanced extension to current Intrusion Detection System (IDS) solutions, which (i) harvests the knowledge out of health data sources or network monitoring to construct models for new threat patterns and (ii) encompasses methods for detecting threat patterns utilizing also advanced unsupervised machine learning data analytic methodologies. Although the work is motivated by the health sector, it is developed in a manner that is directly applicable to other domains.
Quasi-Adiabatic SRAM Based Silicon Physical Unclonable Function
Authors: Takahashi Yasuhiro , Koyasu Hiroki , Kumar S. Dinesh , Thapliyal Himanshu 
Published: July 2020

AbstractSilicon Physical Unclonable Function (PUF) is a general hardware security primitive for security vulnerabilities. Recently, Quasi-adiabatic logic based physical unclonable function (QUALPUF) has ultra low-power dissipation; hence it is suitable to implement in low-power portable electronic devices such radio frequency identification (RFID) and wireless sensor networks (WSN), etc. In this paper, we present a design of 4-bit QUALPUF which is based on static random access memory (SRAM) for low-power portable electronic devices and then shows the post-layout simulation and measurement results. To evaluate the uniqueness and reliability, the 4-bit QUALPUF is implemented in 0.18 $$\upmu$$
μ
m standard CMOS process with 1.8 V supply voltage. The 4-bit QUALPUF occupies 58.7$$\times$$
×
15.7 $$\upmu \mathrm {m}^{2}$$

μ

m

2

of layout area. The post-layout simulation results illustrate that the uniqueness calculated from the inter-die HDs of the 4-bit QUALPUF is 47.58%, the average reliability is 95.10%, and the the energy dissipation is 29.73 fJ/cycle/bit. The functional measurement results of the fabricated chip are the same as the post-layout simulation results.
The impact of atorvastatin on cardiometabolic risk factors in brothers of women with polycystic ovary syndrome
Authors: Krysiak Robert , Szkróbka Witold , Okopień Bogusław 
Published: July 2020

Abstract
Background
Women with polycystic ovary syndrome (PCOS) are characterized by increased cardiometabolic risk. The aim of the current study was to compare the impact of atorvastatin on plasma levels of cardiometabolic risk factors between men whose sisters had either PCOS or were unaffected.

Methods
The study population consisted of two age-, fat-free mass index-, blood pressure- and plasma lipid-matched groups of men with elevated total and LDL cholesterol levels: 20 brothers of PCOS probands (group 1) and 20 brothers of healthy women (group 2). Both groups were then treated with atorvastatin (40 mg daily) for the following 6 months. At the beginning and at the end of the study, we assessed plasma lipid levels, glucose homeostasis markers and levels of dehydroepiandrosterone sulfate, testosterone, bioavailable testosterone, uric acid, high-sensitivity C-reactive protein (hsCRP), homocysteine, fibrinogen and 25-hydroxyvitamin D.

Results
At the beginning of the study, both treatment arms differed in the degree of insulin resistance, calculated bioavailable testosterone, as well as in plasma levels of dehydroepiandrosterone sulfate, uric acid, hsCRP and 25-hydroxyvitamin D. Although atorvastatin reduced total and LDL cholesterol levels, this effect was stronger in group 2 than group 1. In group 2, atorvastatin exerted also a more potent impact on hsCRP, fibrinogen and homocysteine. An unfavorable impact on insulin sensitivity was observed only in group 1; while, statistically significant changes in uric acid and 25-hydroxyvitamin D levels were found only in group 2.

Conclusion
The obtained results suggest that cardiometabolic effects of atorvastatin are less pronounced in male siblings of PCOS probands than in brothers of unaffected women.
Informal Networks: Dark Sides, Bright Sides, and Unexplored Dimensions
Authors: Horak Sven , Afiouni Fida , Bian Yanjie , Ledeneva Alena , Muratbekova-Touron Maral , Fey Carl F. 
Published: July 2020

AbstractInformal networking can be seen as a positive activity with beneficial outcomes for individuals, firms, and society as a whole, but informal networking can also lead to collusion, cliques, nepotism, and other forms of unethical or corrupt conduct – largely related to research on emerging markets. To date, the construction of informal networks and their cultural intertwinement and development have not been a focus of international management and organization studies, a gap that this special issue seeks to address. This special issue contributes to a better understanding of the dynamics of informal networks and their ambivalence, in which the same networks have different modes of operation and have positive and negative sides intermittently or simultaneously. We demonstrate the context in which informal networks operate, highlight their complexity, and encourage dialogue among scholars studying informal networks in a variety of countries. Using a context-based and comparative perspective allows us to conceptualize informal networks in a more integrated and balanced way. Understanding the workings of informal networking – known variously asguanxi, yongo, jentinho, wasta,andblat– in culturally specific settings, places Western values, social structures, and ideals of behavior in perspective and tests Western-centered assumptions, narratives, and theories. Because informal networking is a conventional way of conducting business in many countries, as depicted in this special issue, defining the bright (positive) and the dark (negative) sides of informal networks is critical for responsible management and business success at multinational corporations.
On the primitive ideals of nest algebras
Authors: Orr John Lindsay 
Published: July 2020

AbstractWe show that Ringrose's diagonal ideals are primitive ideals in a nest algebra (subject to the continuum hypothesis). This answers an old question of Lance and provides for the first time concrete descriptions of enough primitive ideals to obtain the Jacobson radical as their intersection. Separately, we provide a standard form for all left ideals of a nest algebra, which leads to insights into the maximal left ideals. In the case of atomic nest algebras, we show how primitive ideals can be categorized by their behaviour on the diagonal and provide concrete examples of all types.
Cohomology of fiber-bunched twisted cocycles over hyperbolic systems
Authors: Backes Lucas 
Published: July 2020

AbstractA twisted cocycle taking values on a Lie group G is a cocycle that is twisted by an automorphism of G in each step. In the case where G = GL(d, ℝ), we prove that if two Hölder continuous twisted cocycles satisfying the so-called fiber-bunching condition have the same periodic data then they are cohomologous.
Self-perceived general health among community-dwelling Portuguese older adults: do men and women differ?
Authors: Alarcão Violeta , Costa Joana , Madeira Teresa , Peixoto-Plácido Catarina , Fernandes Elisabete , Sousa-Santos Nuno , Santos Osvaldo , Nicola Paulo Jorge , Lopes Carla , Gorjão-Clara João 
Published: July 2020

AbstractEvidence on how gender intersects with relevant social constructs in later phases of life is scarce. This investigation examined gender inequalities in perceived health status (self-perceived general health; SPGH) by Portuguese elderly community-dwellers while considering psycho-social and socio-demographic determinants. This study used data from a representative sample of community-dwellers aged ≥65 years (N = 920), who were enrolled in the Portuguese Elderly Nutritional Status Surveillance System (PEN-3S) project. Associations between SPGH and socio-demographic and psycho-social variables, functionality and self-reported morbidity were tested; indirect effects of relevant predictors on SPGH were also tested using a bootstrap method. Gender inequalities in health were found: women significantly rated their health worse than men; overall, participants rated their health as fair. Education, functional status, depression symptoms and self-reported morbidity significantly predicted SPGH among women, whereas only the latter two were associated with SPGH among men. For both genders, depression was the strongest predictor of SPGH. Mediation analyses detected indirect effects of cognitive function and loneliness feelings on SPGH among older adults. Results herein provide insights on the predictive role of psycho-social variables on SPGH and support the need for considering the context when addressing the correlates of SPGH among Portuguese older adults. Altogether, these findings might support cost-effective interventions targeting the most vulnerable groups of the population to inequalities in health and its predictors.
A Distributed Approach for the Implementation of Geometric Reconstruction-Based Visual SLAM Systems
Authors: Ramos Neto Otacílio de Araújo , Lima Filho Abel Cavalcante , Nascimento Tiago P. 
Published: July 2020

SUMMARYVisual simultaneous localization and mapping (VSLAM) is a relevant solution for vehicle localization and mapping environments. However, it is computationally expensive because it demands large computational effort, making it a non-real-time solution. The VSLAM systems that employ geometric reconstructions are based on the parallel processing paradigm developed in the Parallel Tracking and Mapping (PTAM) algorithm. This type of system was created for processors that have exactly two cores. The various SLAM methods based on the PTAM were also not designed to scale to all the cores of modern processors nor to function as a distributed system. Therefore, we propose a modification to the pipeline for the execution of well-known VSLAM systems so that they can be scaled to all available processors during execution, thereby increasing their performance in terms of processing time. We explain the principles behind this modification via a study of the threads in the SLAM systems based on PTAM. We validate our results with experiments describing the behavior of the original ORB-SLAM system and the modified version.