cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Chaos-based Wireless Communication Resisting Multipath Effects
Creators: name: Yao, Junliang
name: Li, Chen
name: Ren, Haipeng
name: Grebogi, Celso
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences
subject: 94A05

description: In additive white gaussian noise (AWGN) channel, chaos has been proved to be the optimal coherent communication waveform in the sense of using very simple matched filter to maximize the signal-to-noise ratio (SNR). Recently, Lyapunov exponent spectrum of the chaotic signals after being transmitted through a wireless channel has been shown to be unaltered, paving the way for wireless communication using chaos. In wireless communication systems, inter-symbol interference (ISI) caused by multipath propagation is one of the main obstacles to achieve high bit transmission rate and low bit error rate (BER). How to resist multipath effect is a fundamental problem in a chaos-based wireless communication system (CWCS). In this paper, implementation of a CWCS is presented. It is built to transmit chaotic signals generated by a hybrid dynamical system and then to filter the received signals by using the corresponding matched filter to decrease the noise effect and to detect the binary information. We find that the multipath effect can be effectively resisted by regrouping the return map of the received signal and by setting the corresponding threshold based on the available information. We show that the optimal threshold is a function of the channel parameters and of the transmitted information symbols. Practically, the channel parameters are time-variant, and the future information symbols are unavailable. In this case, a suboptimal threshold (SOT) is proposed, and the BER using the SOT is derived analytically. Simulation results show that the CWCS achieves a remarkable competitive performance even under inaccurate channel parameters.
description: 9 pages, 6 figures, 1 table
Polygonatum franchetii Hua 1892
Creators: name: Floden, Aaron J.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Asparagaceae
Polygonatum
Polygonatum franchetii

description: Polygonatum franchetii Hua (1892: 392)
 Type (lectotype, here designated):— CHINA. Su-tchuen oriental [now Chongqing], District de Tchen-keou-tin, 2500 m alt., Farges 395 (P000687008 [digital photo!], image viewable at http://coldb.mnhn.fr/catalognumber/mnhn/p/p00687088; isolectotype: P00038310 [digital photo!], image viewable at http://coldb.mnhn.fr/catalognumber/mnhn/p/p00038310).
description: Published as part of Floden, Aaron J., 2015, Lectotypification of Polygonatum franchetii and P. tsinlingense (Asparagaceae), pp. 299-300 in Phytotaxa 218 (3) on page 300, DOI: 10.11646/phytotaxa.218.3.9, http://zenodo.org/record/13635537
Mejoramiento del proceso de matrículas de pregrado y postgrado de la División Financiera en la Universidad de Cartagena
Creators: name: Forero Meriño, Jhonatan Danir
name: Sanes Tous, Jessica
Publisher: name: Universidad de Cartagena
Year: 2015
Subjects: Calidad total
Mejoramiento de procesos
Gestión de procesos

description: Tesis (Administrador Industrial).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración Industrial, 2015
description: El presente proyecto de grado busca explicar factores y variables que inciden en la congestión del procedimiento de Matrícula Financiera de la Universidad de Cartagena. Los cuales pueden ocasionar insatisfacción por parte del usuario al no otorgarle un servicio eficiente y oportuno.
title: Vergleichbares Outcome nach Implantation einer muskelschonenden Kurzschaft-Prothese via antero-lateraler vs. transglutealer Zugang – Prospektive, randomisierte klinische und Ganganalyse-Studie
Creators: name: Flörkemeier, Thilo
name: Budde, Stefan
name: Radtke, Kerstin
name: Seehaus, Frank
name: Jakubowitz, Eike
name: Windhagen, Henning
name: Von Lewinski, Gabriela
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: Hüft-Endoprothetik
subject: Kurzschaft
subject: Minimal-invasiv
subject: 610 Medical sciences; Medicine

description: Fragestellung: Über die letzten Jahre wurden vermehrt Kurzschaftprothesen implantiert, da einerseits die Krafteinleitung physiologischer sein soll, andererseits die Implantation einer Kurzschaftprothese die Muskelansätze der Glutealmuskulatur schonen soll. In den vergangenen Jahren Studien[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2015)
The Relationship Of Training & Development Practices and Organizational Performance (The Case of Commercial Bank Of Ethiopia)
Creators: name: Guta, Firehiwot
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: The study objective is to investigate the relationship of training and development and organizational performance in CBE under West Addis Ababa District. An explanatory crosssectional survey study and quantitative approach was used to provide empirical data to help address the existing research gap. The study consisted sample of 125 employees selected through stratified simple random sampling. The respondents answered questionnaire items adopted from previous researchers using Likert`s traditional questionnaire. The findings showed that CBE has had experienced inefficiency in TNA and Training evaluation elements of its T&D practices. An inferential relationship was computedusing Pearson correlation analysis to investigate their relationship with organizational performance under the BSC measurement framework, which CBE is currently practicing. Therefore, it is found that both TNA and training evaluation elements has strong positive relation with all the four dimensions, i.e. financial, customer, internal process and learning & growth performance in CBE. As a result, in order to achieve effectiveness in its T&D programs, CBE is recommended as the TNA and training evaluations needs to be systematically linked and derived from the overall organizational strategies, plans and policies, rather than being piecemeal, standalone activities, designed to react to the current organizational conditions
Sport Generated by New Media in the COVID-19 Crisis: An Analysis of Female Fitness Enthusiasts
Creators: name: Matteucci, Ivana
Publisher: name: QuiEdit
Year: 2021

description: The global spread of the COVID-19 pandemic has lead to the integration of physical activity, through the Web, into everyday life, giving rise to new concepts of identity and unprecedented forms of sociality. The aim of the present investigation was to understand and interpret the experiences of a group of Web users, namely their multi-faceted digital identity, social interactions, and the emerging relationship between their offline and online lives. We were thus able to verify the hypothesis that the online and offline worlds can become integrated generating an augmented reality both in terms of identity and relationships. Specifically, we investigated a Facebook group of female fitness enthusiasts, who were obliged to alter their approach to sport and physical activity following the adoption of government measures to contain the spread of the virus: lockdown (phase 1) and post-lockdown (phase 2). The research was conducted using both qualitative methodology, consisting of participant observation and semi-structured interviews, and the quantitative tool of the questionnaire. Our results show that the physical world and digital world brought together digital communication strategies and real physical bodies moving towards a connected integrated model of sports and physical activity.
description: Italian Sociological Review, Vol 11, No 5S (2021): Sport in the Context of Migration and Health Crises (Guest Editors: Bortoletto N., Michelini E., Porrovecchio A.)
Evaluation of ultrasound sensors for transcranial photoacoustic sensing and imaging
Creators: name: Kirchner, Thomas
name: Villringer, Claus
name: Laufer, Jan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Medical Physics (physics.med-ph)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Biomedical photoacoustic (PA) imaging is typically used to exploit absorption-based contrast in soft tissue at depths of several centimeters. When it is applied to measuring PA waves generated in the brain, the acoustic properties of the skull bone cause not only strong attenuation but also a distortion of the wavefront, which diminishes image resolution and contrast. This effect is directly proportional to bone thickness. As a result, transcranial PA imaging in humans has been challenging to demonstrate. We measured the acoustic constraints imposed by the human skull to design an ultrasound sensor suitable for transcranial PA imaging and sensing. We imaged the phantoms using a planar Fabry-Perot sensor and employed a range of piezoelectric and optical ultrasound sensors to measure the frequency dependent acoustic transmission through human cranial bone. Transcranial PA images show typical frequency and thickness dependent attenuation and aberration effects associated with acoustic propagation through bone. The skull insertion loss measurements showed significant transmission at low frequencies. In comparison to conventional piezoelectric sensors, the performance of plano-concave optical resonator (PCOR) ultrasound sensors was found to be highly suitable for transcranial PA measurements. They possess high acoustic sensitivity at a low acoustic frequency range that coincides with the transmission window of human skull bone. PCOR sensors showed low noise equivalent pressures and flat frequency response which enabled them to outperform conventional piezoelectric transducers in transcranial PA sensing experiments. Transcranial PA sensing and imaging requires ultrasound sensors with high sensitivity at low acoustic frequencies, and a broad and ideally uniform frequency response. We designed and fabricated PCOR sensors and demonstrated their suitability for transcranial PA sensing.
Modeling root water uptake: root water compensation and hydraulic redistribution
Creators: name: Verma, Parikshit
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: Root water uptake by plants mediates the exchange of water, carbon and energy between land surface and atmosphere and is important in hydrological, climatological, agricultural and ecological studies. Field measurements show that root water uptake could be significantly affected by root water compensation and hydraulic redistribution. We thus use a root water uptake model able to describe these two mechanisms and show their importance when vegetation is growing in shallow water-table environments or duplex soils. The model is based on the Richards equation for the water-flow in soils, with a term for root water uptake being a function of the water potential difference between root xylem and the soil. We describe the flow in the xylem using the Darcy's equation. The model is used in three studies aimed at highlighting the role that root water compensation and hydraulic redistribution might have on the overall root water uptake. In the first study, the model in one dimension is applied to a site near Sydney, Australia, to investigate how native trees growing on duplex soils are able to sustain transpiration rate despite long periods with little or no rain. The model was able to reproduce sap-flux data and the pattern of soil, root and leaf water potential for several months. Scenarios with different root depths showed that trees were able to adjust their water-uptake rates from different soil layers based on soil moisture availability; thus, root water compensation appears to be a key mechanism to maintain sustained transpiration rates. In a second study we investigated the contribution of root water compensation and hydraulic redistribution to root water uptake in shallow water-table environments. We compared the results of our model with a more commonly used root water uptake model. In the third study, we extended the 1D-model to two dimensions, thereby being able to simulate horizontal hydraulic redistribution and the interaction between species with different root systems. In the 2D-model, the roots were assumed to be a continuum in soil and the root systems were described in terms of xylem conductivity fields. Scenarios are presented to show that the 2D-model is able to reproduce observed flow patterns through roots in parts of the soil with different degrees of moisture. The studies presented in this thesis show the further development and use of a modeling approach that is gaining increasing interest in the recent literature. These studies present a realistic description of the role that root water compensation and hydraulic redistribution play in plant water use. The 2D-model introduces a representation of the root system that allows for modelling vertical (hydraulic lift) and horizontal hydraulic redistribution of water in soil, and an efficient description of the interaction between species with different root systems.
How COVID-19 Pandemic Lockdown Has Affected Sports Practice
Creators: name: Mazza, Barbara
Publisher: name: QuiEdit
Year: 2021

description: The recent pandemic generated by COVID-19 has changed how sports are habitually practised, necessitating a form of at-home sport to enable practitioners to continue exercising and training. This also touches upon how sports are ‘delivered’, with home-based consumers having control over the times, ways and spaces given to sport, as transmitted by digital means. During lockdown, opportunities to take advantage of apps and content and/or follow online lessons on social networks notably intensified. These changes in sports practice generate a series of research objectives, to determine: how digital media has created a new environment for socializing and sports practice; how digital devices are used to play home sports; and which players encourage people to exercise at home. With these objectives in mind, a two-phase research was launched at the SapienzaSport centre. The first questioned a group of about 600 practitioners, with a relatively high cultural and socioeconomic level along with access to digital opportunities, to investigate their sports habits during lockdown. The goal was to focus on those not negatively affected by the digital divide. The second phase aimed at studying the subsequent implications, starting from September 2020 (when sports-related activities resumed in Italy), while understanding whether and in what way doing physical activity had changed. In this paper we report and analyse the main results.
description: Italian Sociological Review, Vol 11, No 5S (2021): Sport in the Context of Migration and Health Crises (Guest Editors: Bortoletto N., Michelini E., Porrovecchio A.)
Pazliddinov Shokirov.pdf
Creators: name: Shokirov, Azamatjon
name: Pazliddinov, Abdulvohid
Publisher: name: figshare
Year: 2023
Subjects: Clinical pharmacy and pharmacy practice

description: Abstract The data was collected from parents in favor of the Google Form questionary by us in order to find out the number of children who got fungal otolaryngologic diseases after Coronavirus infection. The main aim of this research was to detect any increase in the number of fungal infections among children after the Coronavirus pandemic. As the viral high transmitted disease, coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus (SARS-CoV-2), has been an emerging global public health event. Till October 19th, 2022, COVID-19 has rapidly spread to 212 countries and caused nearly 618 million laboratory-confirmed cases and more than 6.5 million deaths globally. Even after the pandemic its effects remain and influence people. This article summarizes answers collected by Google Form from parents that have children who experienced Coronavirus infection. 32 responses were collected from parents in Google Survey, according to these data, 23 of them first time in children’s lifetime, noticed a fungal infection in ________________________________________________________________ "Экономика и социум" №3(106) 2023 www.iupr.ru their children during and after the COVID-19 pandemic. This means that during the pandemic overusing medications, such as antibiotics and steroids, and also an immunosuppressive effect of the virus caused well spread of fungal infections. Key words: fungal infections, post-COVID-19, children, pandemic, data analysis, Google Form, Candida albicans, Aspergillus fumigatus.
Greatly enhanced intensity-difference squeezing for narrow-band quantum metrology applications
Creators: name: Zhang, Da
name: Li, Changbiao
name: Zhang, Zhaoyang
name: Li, Feng
name: Zhang, Yiqi
name: Zhang, Yanpeng
name: Xiao, Min
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Narrow-band intensity-difference squeezing beams have important applications in quantum metrology and gravitational wave detection. The best way to generate narrow-band intensity-difference squeezing is to employ parametrically-amplified four-wave mixing process in high-gain atomic media. Such IDS can be further enhanced by cascading multiple parametrically-amplified four-wave mixing processes in separate atomic media. The complicated experimental setup, added losses and required high-power pump laser with the increase of number of stages can limit the wide uses of such scheme in practical applications. Here, we show that by modulating the internal energy level(s) with additional laser(s), the degree of original intensity-difference squeezing can be substantially increased. With an initial intensity-difference squeezing of $-8.5\pm0.4$ dB using parametrically-amplified-non-degenerate four-wave mixing process in a three-level $Λ$-type configuration, the degree of intensity-difference squeezing can be enhanced to $-11.9\pm0.4$ dB/$-13.9\pm0.4$ dB (corrected for losses) when we use one/two laser beam(s) to modulate the involved ground/excited state(s). More importantly, a maximal noise reduction of $-9.7\pm0.4$ dB (only corrected for electronic noise) is observed below the standard quantum limit, which is the strongest reported to date in phase insensitive amplification in four-wave mixing. Applying the model to quantum metrology, the signal-to-noise ratio is improved by 23 dB compared to the conventional Mach-Zehnder interferometer under the same phase-sensing intensity, which is a 14-fold enhancement in rms phase measurement sensitivity beyond the shot noise limit. Our results show a low-loss, robust and efficient way to produce high degree of IDS and facilitate its potential applications.
description: 16 pages, 4 figures
title: Endoprothetische Versorgung des Kniegelenks bei Patienten mit Skeletaler Dysplasie
Creators: name: Günther, Daniel
name: Kendoff, Daniel
name: Schmidl, Stefan
name: Omar, Mohamed
name: Gehrke, Thorsten
name: Haasper, Carl
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: Knieendoprothetik
subject: Minderwuchs
subject: Skeletale Dysplasie
subject: 610 Medical sciences; Medicine

description: Fragestellung: Minderwuchs stellt eine große Herausforderung in der modernen endoprothetischen Versorgung dar. In diesem Patientengut besteht eine hohe Prädisposition für arthrotische Veränderungen. Die anatomischen Gegebenheiten unterscheiden sich oft stark von der Normalpopulation.[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2015)
Doing Sport Online? Managing Sport Training During COVID-19
Creators: name: Borghi, Giorgio
name: Caire, Maria
name: Ferrero Camoletto, Raffaella
Publisher: name: QuiEdit
Year: 2021

description: The Covid-19 pandemic has provided an unparalleled experience of disruption of individual everyday routinary lives as well as of societal organization. Sport as a field of practices and as an economic sector has been strongly affected by the lockdown as a global response, suffering from the shutdown of competitive sports at all levels and from the postponement of mega-events. Within these hard times, imposing strong limitations to the possibility for athletes and the general population to move around, work out and socialize, sport workers were compelled to come up with new ways to make people exercise: one of the solutions adopted has been by using social media and online platforms to host training activities.In this article we will analyze data from an online survey involving coaches, athletic trainers and other sport workers from three sport sub-fields: a team sport, basketball; an individual sport, tennis; and a wide array of activities, the fitness and wellness world. We will focus on the impact of “going online” in those three sport subfield, exploring the different attitudes and practices adopted to adjust sport training by providing exercising through online communication devices without physical co- presence.
description: Italian Sociological Review, Vol 11, No 5S (2021): Sport in the Context of Migration and Health Crises (Guest Editors: Bortoletto N., Michelini E., Porrovecchio A.)
title: Endoprothetische Behandlung von Folgezuständen Typ 1 proximaler Humerukopffrakturen – Mittelfristiger Vergleich der Schaftlosen Hemiprothese mit der Inversen Totalprothese
Creators: name: Seebauer, Ludwig
name: Liebhardt, Michael
name: Hench, Maximilian
name: Franz, Daniel
name: Hamberger, Markus
name: Koch, Michael
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: Schaftlose Schulterhemiprothese
subject: Inverse Schultertotalprothese
subject: Frakturfolgezustände nach proximaler Humerusfraktur
subject: Posttraumatische Endoprothese bei proximaler Humerusfraktur
subject: 610 Medical sciences; Medicine

description: Fragestellung: Bei der endoprothetischen Versorgung posttraumatischen Arthrosen oder Nekrosen mit geringfügiger Tuberkulafehlpositionierung nach Humeruskopffraktur (Frakturfolgezustand Typ 1 n. Boileau) wird als Therapie der Wahl die Verwendung anatomischer Hemiprothesen empfohlen. Neuere Studien[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2015)
Probing the distance-duality relation with high-$z$ data
Creators: name: Holanda, R. F. L.
name: Busti, V. C.
name: Lima, F. S.
name: Alcaniz, J. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Measurements of strong gravitational lensing jointly with type Ia supernovae (SNe Ia) observations have been used to test the validity of the cosmic distance duality relation (CDDR), $D_L(z)/[(1+z)^2D_A(z)]=η=1$, where $D_L(z)$ and $D_A(z)$ are the luminosity and the angular diameter distances to a given redshift $z$, respectively. However, several lensing systems lie in the interval $1.4 \leq z \leq 3.6$ i.e., beyond the redshift range of current SNe Ia compilations ($z \approx 1.50$), which prevents this kind of test to be fully explored. In this paper, we circumvent this problem by testing the CDDR considering observations of strong gravitational lensing along with SNe Ia and { a subsample from} the latest gamma-ray burst distance modulus data, whose redshift range is $0.033 \leq z \leq 9.3$. { We parameterize their luminosity distances with a second degree polynomial function and search for possible deviations from the CDDR validity by using four different $η(z)$ functions: $η(z)=1+η_0z$, $η(z)=1+η_0z/(1+z)$, $η(z)=(1+z)^{η_0}$ and $η(z)=1+η_0\ln(1+z)$. Unlike previous tests done at redshifts lower than $1.50$, the likelihood for $η_0$ depends strongly on the $η(z)$ function considered, but we find no significant deviation from the CDDR validity ($η_0=0$). However, our analyses also point to the fact that caution is needed when one fits data in higher redshifts to test the CDDR as well as a better understanding of the mass distribution of lenses also is required for more accurate results.
description: 7 pages, 3 figures, I table, JCAP in press
Vorticity phase separation and defect lattices in the isotropic phase of active liquid crystals
Creators: name: Caballero, Fernando
name: You, Zhihong
name: Marchetti, M. Cristina
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We use numerical simulations and linear stability analysis to study the dynamics of an active liquid crystal film on a substrate in the regime where the passive system would be isotropic. Extensile activity builds up local orientational order and destabilizes the quiescent isotropic state above a critical activity value, eventually resulting in spatiotemporal chaotic dynamics akin to the one observed ubiquitously in the nematic state. Here we show that tuning substrate friction yields a variety of emergent structures at intermediate activity, including lattices of flow vortices with associated regular arrangements of topological defects and a new state where flow vortices trap pairs of $+1/2$ defect that chase each other tail. These chiral units spontaneously pick the sense of rotation and organize in a hexagonal lattice, surrounded by a diffuse flow of opposite rotation to maintain zero net vorticity. The length scale of these emergent structures is set by the screening length $l_η=\sqrt{η/Γ}$ of the flow, controlled by the shear viscosity $η$ and the substrate friction $Γ$, and can be captured by simple mode selection of the vortical flows. We demonstrate that the emergence of coherent structures can be interpreted as a phase separation of vorticity, where friction plays a role akin to that of birth/death processes in breaking conservation of the phase separating species and selecting a characteristic scale for the patterns. Our work shows that friction provides an experimentally accessible tuning parameter for designing controlled active flows.
The Effects of Reward Practices on Employees' Turnover Intention with reference to MIDI
Creators: name: Sharew, Fanaye
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Human resource is the most important resources in the organization. Making an effort to retain skilled and efficient workforce is very essential for the achievement of the given objective. However, the issue of employee turnover exists in most of the organization throughout the world. To prevent an excessive employee turnover rate, an organization has to set an effective retention mechanism. Among a blend of employee retention mechanisms, reward management is the one which has a great impact on turnover. The main objective of this study was to assess the effects of Reward Practices on Employees' Turnover Intention in MIDI. The specific objectives were to examine their relationships, and to measure the level of employees' turnover intention. An explanatory research design with survey method is applied in this study. The total number of population was 148.Out of total population108sample size were drawn and used stratified sampling technique. The study used both primary and secondary source of data. The correlation result implied that pay has strong negative relationship (r=-573, p<0.01) with employees' turnover intention, moderate negative relationship obtained with benefit (r=-0.363, p<0.01), similarly, moderate negative relationship obtained with promotion (r=-0.423, p<0.01), strong negative relationship obtained with recognition & appreciation (r=-0.542, p<0.01), work environment also found (r=-0.720, p<0.01). Whereas, training & development (r=-0.202, p>0.01) weak relationship is obtained with turnover intention. The result that obtained from regression analysis implied, 62.2% of variation in employees' turnover intention is explained by pay, benefits, promotion, recognition & appreciation, training & development and work environment. Among these independent variables, work environment has a greater rate of change. Concerning the existing employees' level of intention, the findings indicated that there is a high level of turnover intention in the Institute. In order to minimize and control the existing turnover intent of employees', the researcher recommended that the concerned parties have to revise and improve the existing reward practices.
Single-shot, transverse self-wakefield reconstruction from screen images
Creators: name: Majernik, N.
name: Lynn, W.
name: Andonian, G.
name: Xu, T.
name: Piot, P.
name: Rosenzweig, J. B.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: A single-shot method to reconstruct the transverse self-wakefields acting on a beam, based only on screen images, is introduced. By employing numerical optimization with certain approximations, a relatively high-dimensional parameter space is efficiently explored to determine the multipole components of the transverse-wakefield topology up to desired order. The reconstruction technique complements simulations, which are able to directly describe the wakefield composition based on experimental conditions. The technique is applied to representative simulation results as a benchmark, and also to experimental data on wakefield observations driven in dielectric-lined structures.
description: 10 pages, 8 figures
Impacto y procesos sociales generados en los participantes del subproyecto “Vinculación de padres de familia a la casa del menor trabajador; con la metodología de las escuelas para padres”. Carmen de Bolívar año 2000
Creators: name: Castillo Santos, Ferrmina Del
Publisher: name: Universidad de Cartagena
Year: 2000
Subjects: Menores - protección - Colombia
Menor trabajador - Colombia

description: Tesis (Trabajador Social) -- Universidad de Cartagena. Facultad de ciencias sociales y educación. Programa de trabajo social, 2000
description: Vinculación de los padres de familia a la institución con la metodología de las escuelas para padres reconstruyendo experiencias para lograr en los jóvenes, familias e institución una mayor comprensión del proceso.
Please Lower Small Cell Antenna Heights in 5G
Creators: name: Ding, Ming
name: Perez, David Lopez
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In this paper, we present a new and significant theoretical discovery. If the absolute height difference between base station (BS) antenna and user equipment (UE) antenna is larger than zero, then the network capacity performance in terms of the area spectral efficiency (ASE) will continuously decrease as the BS density increases for ultra-dense (UD) small cell networks (SCNs). This performance behavior has a tremendous impact on the deployment of UD SCNs in the 5th-generation (5G) era. Network operators may invest large amounts of money in deploying more network infrastructure to only obtain an even worse network performance. Our study results reveal that it is a must to lower the SCN BS antenna height to the UE antenna height to fully achieve the capacity gains of UD SCNs in 5G. However, this requires a revolutionized approach of BS architecture and deployment, which is explored in this paper too.
description: Final version in IEEE: http://ieeexplore.ieee.org/document/7842150/. arXiv admin note: substantial text overlap with arXiv:1608.06694
title: Frequency modulation stimulated Raman scattering scheme for real-time background correction with a single light source
Creators: name: Wallmeier, Kristin
name: Würthwein, Thomas
name: Lemberger, Nick S.
name: Brinkmann, Maximilian
name: Hellwig, Tim
name: Fallnich, Carsten
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2023
Subjects: subject: 530 Physics
subject: 621 Applied physics

description: A frequency modulation (FM) scheme for stimulated Raman scattering (SRS) is presented with a single fiber-based light source. Pulse-to-pulse wavelength-switching allows real-time subtraction of parasitic signals leaving only the resonant SRS signal with a noise reduction of up to 30 % compared to digital subtraction schemes, leading effectively to a contrast improvement by a factor of up to 8.3. The wide tuning range of the light source from 1500 cm(^−1) to 3000 cm(^−1) and the possibility to separately adjust the resonant and the nonresonant wavenumber for every specimen allow to investigate a variety of samples with high contrast and high signal-to-noise ratio, e. g., for medical diagnostics.
description: Finanziert durch den Open-Access-Publikationsfonds der Westfälischen Wilhelms-Universität Münster (WWU Münster).
Geometry and Dynamics of Gaussian Wave Packets and their Wigner Transforms
Creators: name: Ohsawa, Tomoki
name: Tronci, Cesare
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: Symplectic Geometry (math.SG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We find a relationship between the dynamics of the Gaussian wave packet and the dynamics of the corresponding Gaussian Wigner function from the Hamiltonian/symplectic point of view. The main result states that the momentum map corresponding to the natural action of the symplectic group on the Siegel upper half space yields the covariance matrix of the corresponding Gaussian Wigner function. This fact, combined with Kostant's coadjoint orbit covering theorem, establishes a symplectic/Poisson-geometric connection between the two dynamics. The Hamiltonian formulation naturally gives rise to corrections to the potential terms in the dynamics of both the wave packet and the Wigner function, thereby resulting in slightly different sets of equations from the conventional classical ones. We numerically investigate the effect of the correction term and demonstrate that it improves the accuracy of the dynamics as an approximation to the dynamics of expectation values of observables.
description: 23 pages
title: Das femorale Offset nach trochantären Frakturen: eine prospektive Beobachtungsstudie
Creators: name: Bücking, Benjamin
name: Boese, Christoph
name: Seifert, Vinzenz
name: Ruchholtz, Steffen
name: Frink, Michael
name: Lechler, Philipp
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: Femorales Offset
subject: Hüftbiomechanik
subject: proximale Femurfraktur
subject: proximaler Femurnagel
subject: 610 Medical sciences; Medicine

description: Fragestellung: Wohingegen die Rekonstruktion des femoralen Offsets wurde als wichtiger prognostischer Faktor im Rahmen der Hüftgelenksendoprothetik identifiziert, ist über dessen Einfluss nach proximalen Femurfrakturen wenig bekannt. Das Ziel der aktuellen Studie war es, den Einfluss des femoralen[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2015)
Feb 8 Monday.
Creators: name: Graves, Robert, 1895-1985
Publisher: name: University of Victoria Libraries
Year: 2021
Subjects: subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Graves, Robert, 1895-1985
valueUri: http://id.worldcat.org/fast/31293

description: Page from Robert Graves diary manuscript. The diary includes 1,546 pages with 117 enclosures: letters, clippings, photographs post cards, notes, games.
Sports Brands Communication in the ‘COVID’ Age: Strategies, Representations, Identity and Consumption
Creators: name: Russo, Giovanna
name: Tallarita, Loredana
Publisher: name: QuiEdit
Year: 2021

description: The paper investigates the role of brand communication during the first period of pandemic age, in which Sport and PA were also called to redesign behaviours, cultural and consumer practices as well as to answer new questions of meaning. The new spirit of the time we are living in, is characterized by the domination of the medical-scientific language, and by a strong contraction of the economy in which trends and fashions appear scaled down and subordinate to new goals of well-being. The pandemic has increased the digitized experiences of sports practices, bringing out more and more aspects of individualism, narcissism, which are combined with a continuous search for well-being, health, beauty, fashion. Sports brands therefore appear as social spaces to observe the changes in sports communication and its consumption practices. The paper analysis how – during the first lockdown – the story-telling of sports brands has changed values, going to new socially responsible commitments in terms of global health and security. Following the multidimensional theory of communication, some emblematic cases of global sports brands are investigated through qualitative methods, in order to highlight the emergence of new issues: representations, identities, rules and consumption as innovative aspects of sports cultural production. The aim is to show sport and PA as a sort of pandemic “domestication” of the social reality we are experiencing.
description: Italian Sociological Review, Vol 11, No 5S (2021): Sport in the Context of Migration and Health Crises (Guest Editors: Bortoletto N., Michelini E., Porrovecchio A.)
2DeteCT -- A large 2D expandable, trainable, experimental Computed Tomography dataset for machine learning
Creators: name: Kiss, Maximilian B.
name: Coban, Sophia B.
name: Batenburg, K. Joost
name: van Leeuwen, Tristan
name: Lucka, Felix
Publisher: name: arXiv
Year: 2023
Subjects: subject: Image and Video Processing (eess.IV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Recent research in computational imaging largely focuses on developing machine learning (ML) techniques for image reconstruction, which requires large-scale training datasets consisting of measurement data and ground-truth images. However, suitable experimental datasets for X-ray Computed Tomography (CT) are scarce, and methods are often developed and evaluated only on simulated data. We fill this gap by providing the community with a versatile, open 2D fan-beam CT dataset suitable for developing ML techniques for a range of image reconstruction tasks. To acquire it, we designed a sophisticated, semi-automatic scan procedure that utilizes a highly-flexible laboratory X-ray CT setup. A diverse mix of samples with high natural variability in shape and density was scanned slice-by-slice (5000 slices in total) with high angular and spatial resolution and three different beam characteristics: A high-fidelity, a low-dose and a beam-hardening-inflicted mode. In addition, 750 out-of-distribution slices were scanned with sample and beam variations to accommodate robustness and segmentation tasks. We provide raw projection data, reference reconstructions and segmentations based on an open-source data processing pipeline.
Performance studies of D-meson tagged jets in pp collisions at $\sqrt{s}=7\,\mathrm{TeV}$ with ALICE
Creators: name: Aiola, Salvatore
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present the current status of the measurement of jets that contain a D meson (D-tagged jets) with ALICE. D-meson candidates, identified via their hadronic decay channels, were combined with the other charged tracks reconstructed with the central tracking system, using the anti-$k_{\rm T}$ jet-finding algorithm. The yield of D-tagged jets was extracted through an invariant mass analysis of the D-meson candidates. A Monte Carlo simulation was used to determine the detector performance and validate the signal extraction techniques.
description: 4 pages, 3 figures, Proceedings of the Hot Quarks 2016 Workshop
A SYSTEMATIC FRAMEWORK FOR ANALYZING THE SECURITY AND PRIVACY OF WIRELESS COMMUNICATION PROTOCOL IMPLEMENTATIONS
Creators: name: Karim, Imtiaz
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: System and network security

description: Wireless communication technologies, such as cellular ones, Bluetooth, and WiFi, are fundamental for today’s and tomorrow’s communication infrastructure. Networks based on those technologies are or will be increasingly deployed in many critical domains, such as critical infrastructures, smart cities, healthcare, and industrial environments. Protecting wireless networks against attacks and privacy breaches is thus critical. A fundamental step for the security and privacy of these networks is ensuring that their protocols are implemented as mandated by the standards. These protocols are however quite complex and unfortunately, the lack of secure-by-design approaches for these complex protocols often induces vulnerabilities in implementations with severe security and privacy repercussions. For these protocols, the standards are thousands of pages long, written in natural language, describe the high-level interaction of the protocol entities, and most often depend on human interpretation—which is open to misunderstanding and ambiguity. This inherently entails the question of whether these wireless protocols and their communication equipment implement the corresponding standards correctly or whether the implementations introduce vulnerabilities that can have severe consequences.
Análisis sociolingüístico de la metáfora en el habla de Cartagena
Creators: name: Martínez Martínez, Yuranis Del Carmen
name: Pineda Martínez, Yaquelin Libeth
Publisher: name: Universidad de Cartagena
Year: 2014
Subjects: Variantes y variables
Metafora
Variacionismo
Comunidad de habla

description: Tesis (Profesional en Lingüística y Literatura) -- Universidad de Cartagena. Facultad de ciencias humanas. Programa de lingüística y literatura.
description: La metáfora es un recurso que está presente en todos los ámbitos de la vida para dar forma lingüística a temas que son difíciles de explicar; por ésta razón, las reflexiones en torno a ella han ocupado un lugar importante en el pensamiento del hombre. De allí que en la presente investigación se analice, desde un punto de vista sociolingüístico, las metáforas usadas por los hablantes cartageneros, con el fin de determinar la incidencia de los factores sociales en el uso de éstas.
title: Nachwuchsgewinnung für unser Fachgebiet
Creators: name: Klima, Stefan
name: Hepp, Pierre
name: Hammer, Niels
name: Steinke, Hanno
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: Studium
subject: Fachkräftemangel
subject: Lehre
subject: 610 Medical sciences; Medicine

description: Fragestellung: Wer wird uns später einmal behandeln? Der zunehmende Ärztemangel in unserem Fach lässt eine unzureichende Patientenversorgung in den kommenden Jahrzehnten erwarten. Neben zunehmender Feminisierung des Arztberufes und dem modernen Verständnis einer „work-life-balance“[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2015)
Test-beam Performance Results of the FASTPIX Sub-Nanosecond CMOS Pixel Sensor Demonstrator
Creators: name: Braach, Justus
name: Buschmann, Eric
name: Dannheim, Dominik
name: Dort, Katharina
name: Kugathasan, Thanushan
name: Munker, Magdalena
name: Snoeys, Walter
name: Švihra, Peter
name: Vicente, Mateus
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Within the ATTRACT FASTPIX project, a monolithic pixel sensor demonstrator chip has been developed in a modified 180 nm CMOS imaging process technology, targeting sub-nanosecond timing precision for single ionising particles. It features a small collection electrode design on a 25 micrometers-thick epitaxial layer and contains 32 mini matrices of 68 hexagonal pixels each, with pixel pitches ranging from 8.66 to 20 micrometers. Four pixels are transmitting an analog output signal and 64 are transmitting binary hit information. Various design variations are explored, aiming at accelerating the charge collection and making the timing of the charge collection more uniform over the pixel area. Signal treatment of the analog waveforms, as well as reconstruction of digital position, time and charge information, is carried out off-chip. This contribution introduces the design of the sensor and readout system and presents performance results for various pixel designs achieved in recent test beam measurements with external tracking and timing reference detectors. A time resolution below 150 ps is obtained at full efficiency for all pixel pitches.
description: 15 pages, 15 figures, content as published in NIM A as part of a special issue for the ULITIMA 2023 conference
Feb 9 Tuesday (Shrove)
Creators: name: Graves, Robert, 1895-1985
Publisher: name: University of Victoria Libraries
Year: 2021
Subjects: subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Graves, Robert, 1895-1985
valueUri: http://id.worldcat.org/fast/31293

description: Page from Robert Graves diary manuscript. The diary includes 1,546 pages with 117 enclosures: letters, clippings, photographs post cards, notes, games.
Employees Perception towards Base Pay versus Benefits and its effect on their Turnover Intention: a Case of Bank of Abyssinia S.C
Creators: name: Kebede, Hiwot
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: This study has tried to establish the relationship & influence of Base Pay and Benefit Packages to employees' turnover intention as a case in Bank of Abyssinia, a major financial institution in Ethiopia. In doing so, the study tried to investigate possible perception differences between managerial & clerical category of employees regarding relationship & influence of base pay & benefit packages to turnover intention. An assessment of employees' perception to the overall reward practice of the Bank is also made. To answer these research questions, data was collected through questionnaire & interview from a sample of the Bank's employees who are selected through stratified & simple random sampling methods. Quantitative data was presented using Statistical Package for Social Sciences (SPSS) and is described &analyzed using various statistical measures & methods. The findings of the research showed the Bank's overall reward management practice is perceived satisfactorily by its employees and the overall turnover intention of the Bank's employees is relatively low. It was established base pay & benefit packages have a strong relationship to employees' turnover intention. Yet, the research showed a perception difference of the said relationship among the managerial & clerical category of employees. As such, benefit packages have a stronger relationship & effect to the turnover intention for clerical category of employees and base pay has a stronger relationship & influence to turnover intention of managerial category of employees. In conclusion, the research has shown the Bank's reward management system is perceived satisfactorily by employees& hence contributed to a low turnover intention. The Bank is recommended to develop compensation strategies that address the separate perceptions of the clerical & managerial categories of employees towards base pay & benefit packages