bluuebunny/crossref_metadata_2025_split huggingface dataset:
High gain, wide-angle QCTO-enabled modified Luneburg lens antenna with broadband anti-reflective layer
Authors: Biswas Soumitra , Mirotznik Mark 
Published: July 2020

AbstractThe gradient-index (GRIN) Luneburg lens antenna offers significant benefits, e.g. high aperture efficiency, low-power, minimal cost, wide beam scanning angle and broad bandwidth, over phased array antennas and reflector antennas. However, the spherical shape of the Luneburg lens geometry complicates the integration of standard planar feed sources and poses significant implementation challenge. To eliminate the feed mismatch problem, the quasi-conformal transformation optics (QCTO) method can be adopted to modify the lens’ spherical feed surface into a planar one. However, Luneburg lenses designed with QCTO method are limited to poor performance due to the presence of the reflections and beam broadening arising from the quasi-conformal mapping. In this paper, we present a new method of implementing QCTO-enabled modified Luneburg lens antenna by designing a broadband anti-reflective layer along with the modified lens’s planar excitation surface. The proposed anti-reflector layer is inherently broadband in nature, has a continuously tapered inhomogeneous dielectric permittivity profile along its thickness, and ensures broadband impedance matching. To show the new QCTO modified Luneburg lens antenna, an example lens antenna was designed at Ka-band (26–40 GHz) and fabricated using fused deposition modeling (FDM) based additive manufacturing technique. Electromagnetic performance of the lens antenna was experimentally demonstrated.
Large-scale controls of propagation of the Madden-Julian Oscillation
Authors: Jiang Xianan , Maloney Eric , Su Hui 
Published: July 2020

AbstractWith widespread influence on global climate and weather extremes, the Madden-Julian Oscillation (MJO) plays a crucial role in subseasonal prediction. Our latest global climate models (GCMs), however, have great difficulty in realistically simulating the MJO. This model inability is largely due to problems in representation of MJO’s cumulus organization. This study, based on a series of idealized aqua-planet model experiments using an atmospheric-only GCM, clearly demonstrates that MJO propagation is strongly modulated by the large-scale background state in which the lower-tropospheric mean moisture gradient and zonal winds are critical. Therefore, when tuning climate models to achieve improved MJO simulations, particular attention needs to be placed on the model large-scale mean state that is also significantly affected by cumulus parameterizations. This study indicates that model biases in representing MJO propagation may be related to the widely reported double-ITCZ (intertropical convergence zone) problem in climate models.
Fully compressible simulations of waves and core convection in main-sequence stars
Authors: Horst L. , Edelmann P. V. F. , Andrássy R. , Röpke F. K. , Bowman D. M. , Aerts C. , Ratnasingam R. P. 
Published: July 2020

Context. Recent, nonlinear simulations of wave generation and propagation in full-star models have been carried out in the anelastic approximation using spectral methods. Although it makes long time steps possible, this approach excludes the physics of sound waves completely and requires rather high artificial viscosity and thermal diffusivity for numerical stability. A direct comparison with observations is thus limited.
Aims. We explore the capabilities of our compressible multidimensional Seven-League Hydro (SLH) code to simulate stellar oscillations.
Methods. We compare some fundamental properties of internal gravity and pressure waves in 2D SLH simulations to linear wave theory using two test cases: (1) an interval gravity wave packet in the Boussinesq limit and (2) a realistic 3 M⊙ stellar model with a convective core and a radiative envelope. Oscillation properties of the stellar model are also discussed in the context of observations.
Results. Our tests show that specialized low-Mach techniques are necessary when simulating oscillations in stellar interiors. Basic properties of internal gravity and pressure waves in our simulations are in good agreement with linear wave theory. As compared to anelastic simulations of the same stellar model, we can follow internal gravity waves of much lower frequencies. The temporal frequency spectra of velocity and temperature are flat and compatible with the observed spectra of massive stars.
Conclusion. The low-Mach compressible approach to hydrodynamical simulations of stellar oscillations is promising. Our simulations are less dissipative and require less luminosity boosting than comparable spectral simulations. The fully-compressible approach allows for the coupling of gravity and pressure waves in the outer convective envelopes of evolved stars to be studied in the future.
Huddlen Sie schon?
Authors: Kurmann Jörg , Schirk Petra 
Published: July 2020

ZusammenfassungDas Huddle-Board ist eine Alternative, um in kurzen Meetings Einzelprozesse voranzutreiben und Erfolge oder auch Probleme zu benennen. Erfahren Sie mehr über das transparente Instrument, das auf Zahlen und Fakten basiert.
Mitarbeiter nachhaltig motivieren
Authors: Hößl Irene 
Published: July 2020

ZusammenfassungEin wichtiger Faktor bei der Motivation ist das Verhalten der Führungskraft. Doch muss sich jeder auch selbst motivieren. Lesen Sie, welche Tools greifen und welchen Rahmen es braucht, Pflegende nachhaltig zu motivieren.
Term Labor Induction and Cesarean Delivery Risk among Obese Women with and without Comorbidities
Authors: Glazer Kimberly B. , Danilack Valery A. , Field Alison E. , Werner Erika F. , Savitz David A. 
Published: July 2020

Objective Findings of the recent ARRIVE (A Randomized Trial of Induction Versus Expectant Management) trial, showing reduced cesarean risk with elective labor induction among low-risk nulliparous women at 39 weeks' gestation, have the potential to change interventional delivery practices but require examination in wider populations. The aim of this study was to identify whether term induction of labor was associated with reduced cesarean delivery risk among women with obesity, evaluating several maternal characteristics associated with obesity, induction, and cesarean risk.
Study Design We studied administrative records for 66,280 singleton, term births to women with a body mass index ≥30, without a prior cesarean delivery, in New York City from 2008 to 2013. We examined elective inductions in 39 and 40 weeks' gestation and calculated adjusted risk ratios for cesarean delivery risk, stratified by parity and maternal age. We additionally evaluated medically indicated inductions at 37 to 40 weeks among women with obesity and diabetic or hypertensive disorders, comorbidities that are strongly associated with obesity.
Results Elective induction of labor was associated with a 25% (95% confidence interval: 19–30%) lower adjusted risk of cesarean delivery as compared with expectant management at 39 weeks of gestation and no change in risk at 40 weeks. Patterns were similar when stratified by parity and maternal age. Risk reductions in week 39 were largest among women with a prior vaginal delivery. Women with comorbidities had reduced cesarean risk with early term induction and in 39 weeks.
Conclusion Labor induction at 39 weeks was consistently associated with reduced risk of cesarean delivery among women with obesity regardless of parity, age, or comorbidity status. Cesarean delivery findings from induction trials at 39 weeks among low-risk nulliparous women may generalize more broadly across the U.S. obstetric population, with potentially larger benefit among women with a prior vaginal delivery.
Key Points
Nonstandard conditionally specified models for nonignorable missing data
Authors: Franks Alexander M. , Airoldi Edoardo M. , Rubin Donald B. 
Published: July 2020

SignificanceWe consider data-analysis settings where data are missing not at random. In these cases, the two basic modeling approaches are 1) pattern-mixture models, with separate distributions for missing data and observed data, and 2) selection models, with a distribution for the data preobservation and a missing-data mechanism that selects which data are observed. These two modeling approaches lead to distinct factorizations of the joint distribution of the observed-data and missing-data indicators. In this paper, we explore a third approach, apparently originally proposed by J. W. Tukey as a remark in a discussion between Rubin and Hartigan, and reported by Holland in a two-page note, which has been so far neglected.
DNA methylation enables transposable element-driven genome expansion
Authors: Zhou Wanding , Liang Gangning , Molloy Peter L. , Jones Peter A. 
Published: July 2020

Significance
We examined recent whole-genome data of 53 organisms and found that the substantial differences in their genome sizes can be largely explained by the proportion of transposable elements (TEs) within them. TEs coexist with their host largely because CpG methylation suppresses their transcription. Genome expansion is therefore dependent to a large extent on the action of DNA methyltransferases, which evolved at roughly the same time as TEs. A long-term outcome of CpG methylation is an increase in C-to-T transition mutations both in the TEs and host DNA, which leads to a decreased proportion of CpG dinucleotides over evolutionary time. The survival of TEs in the host genome also provides extra DNA that may be repurposed for host regulatory functions.
HCMV-induced signaling through gB–EGFR engagement is required for viral trafficking and nuclear translocation in primary human monocytes
Authors: Fulkerson Heather L. , Chesnokova Liudmila S. , Kim Jung Heon , Mahmud Jamil , Frazier Laura E. , Chan Gary C. , Yurochko Andrew D. 
Published: July 2020

SignificanceHuman cytomegalovirus (HCMV) pathogenesis relies upon viral infection of monocytes, as this is the key cell type mediating the hematogenous dissemination of HCMV throughout the host. Here we report that HCMV glycoprotein B surprisingly remains bound to the epidermal growth factor receptor (EGFR) throughout the duration of viral postentry events to induce chronic signaling through EGFR. This chronic EGFR signaling is required to facilitate viral localization to correct trafficking vesicles, as well as promoting nuclear translocation of viral DNA into the monocyte nucleus, both of which are necessary for infection of monocytes. Our data highlight how HCMV regulates the EGFR kinase externally and, uniquely, internally to promote separate and distinct events required for productive infection, spread, and persistence.
Krüppel-like factor 17 upregulates uterine corin expression and promotes spiral artery remodeling in pregnancy
Authors: Wang Can , Wang Zhiting , He Meiling , Zhou Tiantian , Niu Yayan , Sun Shengxuan , Li Hui , Zhang Ce , Zhang Shengnan , Liu Meng , Xu Ying , Dong Ningzheng , Wu Qingyu 
Published: July 2020

Significance
In pregnancy, blood vessels in the uterus increase in size, providing more blood supply and nutrients to the growing fetus. Corin is an enzyme that boosts this process. In this study, we sought to understand how uterine corin production is controlled. In experiments with human uterine cells and pregnant mice, we identified a protein, called Krüppel-like factor 17 (KLF17), which turns on the corin gene in the pregnant uterus. In genetically modified mice, Klf17 deficiency prevents uterine corin production, decreases uterine vessel size, and causes high blood pressure in pregnancy. These results show that KLF17 is a gene-controlling protein important for uterus function in pregnancy.
Molecular basis of the selective processing of short mRNA substrates by the DcpS mRNA decapping enzyme
Authors: Fuchs Anna-Lisa , Wurm Jan Philip , Neu Ancilla , Sprangers Remco 
Published: July 2020

Significance
In eukoryotes, 3′ to 5′ mRNA degradation is a major pathway to reduce mRNA levels and, thus, an important means to regulate gene expression. Herein, messenger RNA (mRNA) is hydrolyzed from the 3′ end by the exosome complex, producing short capped RNA fragments, which are decapped by DcpS. Our data show that DcpS is only active on mRNA that have undergone prior processing by the exosome. This DcpS selection mechanism is conserved from yeast to humans and is caused by the inability of the enzyme to undergo structural changes that are required for the formation of a catalytically active state around long mRNA transcripts. Our work thus reveals the mechanistic basis that ensures an efficient interplay between DcpS and the exosome.
Progression from remodeling to hibernation of ribosomes in zinc-starved mycobacteria
Authors: Li Yunlong , Corro Jamie H. , Palmer Christopher D. , Ojha Anil K. 
Published: July 2020

SignificanceWe previously reported that hibernation of 70S ribosomes in mycobacteria is induced as a response to zinc starvation. Because zinc limitation also induces ribosome remodeling, our findings raise questions about the conditions for ribosome remodeling and hibernation. Here, we show that the two processes are induced at different concentrations of zinc and that the caseinolytic protease system plays a crucial role in zinc-dependent inhibition of hibernation during remodeling. The findings offer insights into the molecular pathway underlying the transition from remodeling of ribosomes to hibernation in response to progressive zinc depletion in mycobacteria. This study is also a demonstration of reactivation of hibernating ribosomes by zinc. Finally, this study correlates ribosome hibernation with streptomycin tolerance inMycobacterium tuberculosisduring infection.
Bayesian approach to inverse scattering with topological priors
Authors: Carpio Ana , Iakunin Sergei , Stadler Georg 
Published: July 2020

Abstract
We propose a Bayesian inference framework to estimate uncertainties in inverse scattering problems. Given the observed data, the forward model and their uncertainties, we find the posterior distribution over a finite parameter field representing the objects. To construct the prior distribution we use a topological sensitivity analysis. We demonstrate the approach on the Bayesian solution of 2D inverse problems in light and acoustic holography with synthetic data. Statistical information on objects such as their center location, diameter size, orientation, as well as material properties, are extracted by sampling the posterior distribution. Assuming the number of objects known, comparison of the results obtained by Markov Chain Monte Carlo (MCMC) sampling and by sampling a Gaussian distribution found by linearization about the maximum a posteriori estimate show reasonable agreement. The latter procedure has low computational cost, which makes it an interesting tool for uncertainty studies in 3D. However, MCMC sampling provides a more complete picture of the posterior distribution and yields multi-modal posterior distributions for problems with larger measurement noise. When the number of objects is unknown, we devise a stochastic model selection framework.
Development and performance evaluation of a piezoceramic coated flapping wing
Authors: Nagarajan Bhuvana , Dutta Soma , Pratap Rudra 
Published: July 2020

Abstract
Flapping wing applications require actuators that are light in weight and can produce large displacements. A piezoceramic coated flapping wing without any other amplification mechanism is developed for micro and nano aerial vehicles. The dragonfly wing shaped structure with the piezoceramic coating produced a lift of 0.99 mN which was 1.3 times the mass of the wing. The results obtained from the experiments to mimic the kinematic motions of the wing using the coated piezoceramic actuator are also reported.
Tailoring superconducting states in superconductor-ferromagnet hybrids
Authors: Stellhorn A , Sarkar A , Kentzinger E , Barthel J , Bernardo A Di , Nandi S , Zakalek P , Schubert J , Brückel T 
Published: July 2020

Abstract
We present results of a comprehensive investigation of two phenomena arising in superconductor(S)/ferromagnet(F) heterostructures of Nb on FePd with a lateral magnetic domain pattern: domain-superconductivity and spin-triplet Cooper pair generation. Resistivity measurements in a magnetic field applied out-of-plane to a Nb/FePd (S/F) sample with high magnetocrystalline anisotropy give evidence of stray field generated domain-wall- and reverse-domain-superconductivity. A corresponding bilayer comprising low magnetocrystalline anisotropy exhibits spin-triplet Cooper pair generation and a notable high variation of the S critical temperature due to spin-triplet generation (ΔT
c) of 100 mK in an in-plane applied field. Using reference samples we can clearly distinguish stray field from proximity effects. The relevance of the characteristic S and F length scales related to the observed proximity effects is discussed.
Characterizing the Accuracy of ALMA Linear-polarization Mosaics
Authors: Hull Charles L. H. , Cortes Paulo C. , Gouellec Valentin J. M. Le , Girart Josep M. , Nagai Hiroshi , Nakanishi Kouichiro , Kameno Seiji , Fomalont Edward B. , Brogan Crystal L. , Moellenbrock George A. , Paladino Rosita , Villard Eric 
Published: July 2020

Abstract
We characterize the accuracy of linear-polarization mosaics made using the Atacama Large Millimeter/submillimeter Array (ALMA). First, we observed the bright, highly linearly polarized blazar 3C 279 at Bands 3, 5, 6, and 7 (3 mm, 1.6 mm, 1.3 mm, and 0.87 mm, respectively). At each band, we measured the blazar’s polarization on an 11 × 11 grid of evenly spaced offset pointings covering the full-width at half-maximum (FWHM) area of the primary beam. After applying calibration solutions derived from the on-axis pointing of 3C 279 to all of the on- and off-axis data, we find that the residual polarization errors across the primary beam are similar at all frequencies: the residual errors in linear polarization fraction P
frac and polarization position angle χ are ≲0.001 (≲0.1% of Stokes I) and ≲ 1° near the center of the primary beam; the errors increase to ∼0.003–0.005 (∼0.3%–0.5% of Stokes I) and ∼1°–5° near the FWHM as a result of the asymmetric beam patterns in the (linearly polarized) Q and U maps. We see the expected double-lobed “beam squint” pattern in the circular polarization (Stokes V) maps. Second, to test the polarization accuracy in a typical ALMA project, we performed observations of continuum linear polarization toward the Kleinmann–Low nebula in Orion (Orion-KL) using several mosaic patterns at Bands 3 and 6. We show that after mosaicking, the residual off-axis errors decrease as a result of overlapping multiple pointings. Finally, we compare the ALMA mosaics with an archival 1.3 mm Combined Array for Research in Millimeter-wave Astronomy polarization mosaic of Orion-KL and find good consistency in the polarization patterns.
History of Decision-Making: Development and its Applications
Authors: Amrozi Yusuf , Usman Indrianawati , Ali Ramdhani Muhammad 
Published: July 2020

Abstract
The purpose of this paper is to outline the development of decision making management and implementation of decision making management in an organization. The approach used to explain development of decision making management through literature studies. Whereas application of decision-making management through field research. The case study used in this article was the model of new employees recruitment with the model of Analytic Hierarchy Process. In this model of decision-making, there are three designs to be implemented; First, modeling management. Second, database management. Third, interface management. Management of modeling is used to find the optimum solution to selected alternative decisions. Database management is used as a store of data, including data and information on the knowledge, problems, and solution decisions. The management interface is used as an inter-system communication management with decision-makers. The contributions of this paper is to elaborate the development of decision making management and to provide the optimum solution in selecting the new employees in an organization quickly and accurately.
Combination of Cryptography Algorithm Knapsack and Run Length Enconding (RLE) Compression in Treatment of Text File
Authors: Marto Hasugian Paska , Barita Nauli Simangunsong Pandi , Iqbal Panjaitan Muhammad , Wahyuni Dewi , Fadillah Rezky Syarifah 
Published: July 2020

Abstract
The Knapsack algorithm cryptographic method is asymmetric cryptography in which the encryption key is different from the decryption key. In addition to text file security issues, the issue of the size of a text file is also a consideration. Large text files can be compressed by doing the compression process. Run Length Encoding (RLE) algorithm is an algorithm that reduces the size of a text file, if the text has a lot of repetition of characters. The combination of Knapsack and RLE algorithms can guarantee Text files cannot be seen by unauthorized users and can guarantee text files can be stored in low capacity media files. In this study, the authors made a combination of knapsack and RLE algorithm in text files. In the Knapsack algorithm there will be an increase in the size of the text file, this can be seen in the example of a case where the size of the plaintext (the original message) is 9 bytes, then after the encryption process the text file size becomes 7 bytes. Because of that the use of a combination of encryption and data compression is better because the file becomes smaller than the combination of data compression and encryption. Plaintext that has a lot of repetition of characters will be well compressed.
The influence of Customer Advocacy to Purchase Intentions in Green Packaging
Authors: Rahadian Bram , Fadly Prayogo Rafi , Sodikin Alit , Saribanon Euis 
Published: July 2020

Abstract
The innovation in green packaging is growing rapidly amid the rise of going green behavior. Garbage is one of the most concrete problems in the world. We aim this research in calculating a potential in green packaging business as a supplier. We use 109 samples calculated by slovin’s method. We use SPSS simple regression and the conclusion is customer advocacy is strongly influencing purchase intention and the growth of other sectors that need packaging to distribute. It means is a potential business to bring environmentally friendly behaviors especially supporting food&beverages and logistics activities. The result is customer advocacy is strongly influencing purchase intention and the curve show X and Y are distributed normally. So the conclusion is Green Packaging is a potential business judging from the development and growth of the logistics business.
Impact And Sustainability Of Digital Transformation In Pelni Logistics
Authors: Iman Yusadi Farhan , Saputra Rahmat , Suprapto  , Saribanon Euis 
Published: July 2020

Abstract
The purpose of this study is to examine benefits of digital application in logistics process and sustainable impact on implementation of digitalization in Pelni Logistics compared to manual system. Digitalization is an important device to create a reliable and sustainable transportation system and supply of goods. At present many companies are performing digitalization. The transformation concept of digitalization focus on production/service process. This study used a qualitative descriptive method. Data collection techniques were conducted by interviewing 4 informants. The study shows that the concept of digitalization can increase production/service, operational process can be well integrated, real-time information can provide more efficiency that will contribute to company profits and can create more varied products/services.