bluuebunny/crossref_metadata_2025 huggingface dataset:
Avaliação de Imagens Obtidas com o Sensor Micasense na Estimativa da Batimetria em Corpos D’água Opticamente Rasos
Authors: Andrade Laura Coelho de , Ferreira Italo Oliveira , Medeiros Nilcilene das Graças , Teixeira Victória Gibrim , Santos Felipe Catão Mesquita
Published: April 2021

O levantamento batimétrico é parte integrante do estudo da hidrografia e consequentemente dos corpos d’água existentes. Ultimamente, tem sido notória a disseminação da importância da preservação dos corpos hídricos existentes no planeta. Nesse âmbito, os levantamentos batimétricos são a peça chave para o cálculo do assoreamento ao longo dos anos, estimativa de volume, erosão nas bordas, cálculo dos sedimentos em suspensão, dentre outros. Esses estudos são realizados, usualmente, por meio de ecobatímetros, os quais utilizam da onda sonora para obtenção da profundidade. Todavia, os levantamentos com esses equipamentos são demorados e na maioria das vezes possuem um custo elevado. Dessa forma, com o avanço tecnológico, inúmeros trabalhos nessa área já foram feitos com dados de sensoriamento remoto, muitos utilizando imagens orbitais. Com o surgimento dos RPA’s (Remotely Pilot Aircraft), incontáveis benefícios para o mapeamento costeiro podem ser obtidos, principalmente no quesito agilidade. Diante do exposto, o presente estudo tem como objetivo principal a avaliação da estimativa da batimetria obtida com o sensor multiespectral Micasense vinculado a uma aeronave autônoma não tripulada. Os resultados encontrados mostraram que a metodologia descrita, em conjunto com o sensor escolhido, pode ser empregada em diversos estudos de cunho ambiental ou que objetivam a melhor gestão de recursos hídricos, sobretudo em águas límpidas. Todavia, deve-se existir alguns cuidados principalmente na execução do levantamento aerofotogramétrico, atentando-se para o fato de que diferentes locais irão conter diferentes taxas de componentes opticamente ativos e consequentemente resultados distintos.
Monitoramento Fitossanitário Utilizando Sensoriamento Remoto: Avanços e Desafios
Authors: Barros Pedro Paulo da Silva , Rosalen David Luciano , Iost Filho Fernando Henrique , Martins George Deroco , Di Leo Néstor
Published: April 2021

Problemas fitossanitários, como doenças, pragas e plantas daninhas, que competem com as plantas cultivadas por recursos e, consequentemente, prejudicam seu pleno desenvolvimento, são responsáveis por perdas significativas no setor agrícola, ano após ano. Portanto, conhecer o status sanitário da lavoura é um fator crucial no planejamento de ações de manejo, além de embasar políticas públicas de investimento e de proteção, a serem adotadas, com o objetivo de prevenir perdas produtivas e de assegurar a segurança alimentar da nação. Quando expostas a esses problemas, as plantas ativam respostas de defesa, cujos mecanismos moleculares são muito complexos. Nos estágios iniciais de um ataque de pragas ou de uma doença, embora os sintomas ainda não sejam visíveis no dossel, as plantas reagem com diferentes mecanismos fisiológicos, tais como a redução da taxa de fotossíntese, que induz a um aumento da fluorescência e da emissão de calor. Dessa forma, plantas estressadas produzem uma assinatura espectral que difere da assinatura de uma planta saudável. Dentro do Sensoriamento Remoto, inúmeras pesquisas têm estudado a relação entre diferentes problemas fitossanitários com a resposta espectral registrada em sensores multi ou hiperespectrais (sejam imageadores ou não imageadores, ativos ou passivos e embarcados em plataformas terrestres, aéreas ou orbitais). Nesse contexto, o objetivo desta revisão é descrever o estado da arte da tecnologia de Sensoriamento Remoto aplicada a aspectos fitossanitários de lavouras, nos níveis de coleta de dados terrestre, aéreo e orbital, envolvendo diferentes modalidades de sensores.
O Cenário de Editais de Licitação Pública de Sistema de Informação Territorial para Administrações Municipais: Diagnóstico e Proposta de Requisitos Utilizando Técnicas de Engenharia de Requisitos
Authors: Nubiato Everton Leandro , Delazari Luciene Stamato
Published: April 2021

A gestão do espaço territorial urbano é uma necessidade e uma obrigação dos municípios brasileiros que precisam de instrumentos capazes de fornecer conhecimento a respeito do território. Neste sentido, as administrações públicas municipais têm buscado soluções eficientes e eficazes que proporcionem a ordenação, o controle e a manutenção do espaço territorial, as quais permitam a conjugação de dados cadastrais, bases cartográficas e processos de gestão territorial, ou seja, há demanda por aquisição de sistemas de informação territorial para atender às necessidades por gestão do espaço urbano. Para se obter um sistema de informação territorial que possa ter critérios de qualidade e desempenho bem definidos e conhecidos do mercado, a fim de subsidiar a administração pública em processos licitatórios, pode-se aplicar técnicas da engenharia de software para elicitação, análise, documentação e validação de requisitos do sistema. Todavia, o desenvolvimento de um projeto de engenharia de software para definição de requisitos de sistema não é algo simples e requer capacidade técnica e profissional, além de recursos financeiros, o que pode ser um grande desafio para as administrações públicas municipais. Neste contexto, a proposta deste artigo é apresentar os resultados da aplicação de técnicas de engenharia de software na verificação e validação das especificações técnicas encontradas em editais de licitação de administrações públicas municipais, a fim de registrar o cenário brasileiro, bem como fazer uma proposta inicial de um documento de requisitos o qual possa contribuir para uma futura padronização de sistemas de informação territorial em administrações públicas municipais.
Effective Factors in Adopting Electronic Books E books by Students in Electronic Era
Authors: Nazari Malihe , Abdekhoda Mohammedhiwa
Published: April 2021

The current study was conducted with the aim of identifying effective factors in students’ utilise of e-books by combining the Expectancy Disconfirmation Theory and Technology Acceptance Model. The current study is a descriptive-analytical study using confirmatory factor analysis. The study population included students of Tabriz University of Medical Sciences. A randomised sampling method was used from the available population, including 140 participants selected as the study population, and the research instrument was a questionnaire constructed based on the Expectance Disconfirmation Theory (EDT) and Technology Acceptance Model (TAM). The findings indicate that factors of the TAM, that is, perceived usefulness (PU) (=β0.64) and perceived ease of use (PEOU) (=β 0.42) have a positive and significant effect on student’s use of e-books. Other findings indicate that the suggested model is able to depict over 47 per cent of effective factors in using e-books by students. Thus, the combination of TAM and EDT models is appropriate for depicting students’ behavior in using e-book. The results of this study clearly identified the effective factors in student’s use of e-books, including PU, PEOU, confirmation, and user satisfaction. The results of current study can be beneficial for the implementation of e-books in libraries and educational settings.
Analysing Open Access Uptake by Academic and Research Institutions in India
Authors: Nazim Mohammad
Published: April 2021

The commitment to Open Access (OA) movement has started revolutionising the outline of conventional scholarly publishing practices and welcoming the new wind to scientific research across the world. Motivating by the changing scenario, the study strives to analyse OA uptake by the Indian academic and research institutions concerning their research productivity. Publication data of 36 universities have been retrieved from the 2020 record of CWTS Leiden Ranking database. Findings of the study show that around 23 per cent of all publications of these universities are openly accessible, and their median OA publications proportion is much lower (around half) than the median measure of universities worldwide (43 %). ‘Green OA’ reserved the first place with 17 per cent of occurrence, and Biomedical and Health Sciences have achieved the highest median (34.37 %). The study concludes with a vision towards increasing the global collaboration of the academic institutions regarding OA following the account of the Indian achievements.
Measurement of the Dielectric Constant and Loss Tangent of Polyester / Walnut Shells by the Cavity Perturbation Method at the Microwave X-band Frequencies
Authors: Mathloom Ahmed R.
Published: April 2021

In this paper, the cavity perturbation method was used to measure the dielectric properties of materials that are important for understanding the response to microwave waves, in terms of the ability of these materials to store energy and dissipate it as heat, respectively. Compounds (polyester / walnut shells) were prepared, and for different weight concentrations of walnut shells (WS) additive, the proportions ranged between (0% - 25%). The used cavity is rectangular in shape with a theoretically resonance frequency of around (9.9978 GHz) and exiting the dominant mode (TE101). The study shows the highest values of each dielectric constant with a weight concentration (25%) of the walnut shells, and the loss tangent without any material change to the sample. These compounds have been found to be useful in applications of electromagnetic materials such as microwave engineering and protection from biological influences when exposed to the field of microwaves, which is why it is very important to test their dielectric properties.
Tailored Physical and Optical Traits of TiO Thin Film formed Via Spray Pyrolysis Strategy: Influence of Annealing Temperature Change
Authors: Hussein M.L. , Kadhim Ghada A. , Salim Ali Aqeel
Published: April 2021

Based on the worldwide technological interest, titanium oxide (TiO) thin film with its adapted form is well-known in the solar batteries and optoelectronic devices. Hence, we prepared a thin film upon a glass substrate using a chemical spray pyrolysis approach. Varied annealing temperatures (303, 323, 373, 423, 473 and 523 K) were used to establish the physicochemical properties of TiO thin film. The transmittance spectra values were observed between 50% and 70% with extinction coefficient value ~ 0.28 cm‒1. Consequently, the bandgap of the TiO were steadily decreased with enlarging the annealing temperature from 3.5 eV up to 2.8 eV.
Detecting Levels and Innovative Applications for the Detection of Aromatic Compounds Using Multivariate Curve Analysis and Spectroscopy Data
Authors: Zeyad Al-Ibadi , Alboedam Muthana , Katanov Ilya , Sura Al-Zubaidi
Published: April 2021

Rapid technological developments and the increasing complexity of matrix work are increasing interest in finding robust technical solutions and fast and assertive data analysis. The data can be filtered to obtain spectral data in more useful spectral bands, the developed algorithms allow quantification of the spectral mixture, and it can be measured with or without titration. We focused in this study is on samples within the range of wavelengths (459,466,462,464 nm), different strategies are utilized to check Aromatic compounds. These enable us to survey a specific degree of ordinary compounds, much the same as benzene, toluene and xylene, and so on. In this study compares data analysis, received from sensor between A polynomial approximation PolyFit method and Processors Gases method, and compares the results of each, a method with the multivariate curve resolve - alternate least squares (MCR - ALS) regression strategy of analyzing spectral data of information with a different concentration. Additionally, adequately moo deviations of the anticipated values were accomplished from the genuine values, the standard deviation. And, the amended range was normalized to their region and to some degrees smooth. The autofluorescence establishment was subtracted, for the pure extend investigation, by utilizing logical approaches.
The Sensitivity of V2O5:Sm2O3 Thin Films against NO2 Toxic Gas
Authors: Noori A.J. , Ahmed R.A. , Ibrahim I.M.
Published: April 2021

Vanadium oxide V2O5 thin films with variation doping ratios of Sm2O5 (2, 4, 6, and 8 % wt.) on corn glass and p- type silicon substrates were prepared by pulsed laser method. The X-ray diffraction peaks for V2O5 decreases with doping ratio of Sm2O3. FESEM images for V2O5 and doped thin films illustrates clusters with a homogeneous distribution in nano scale. The energy gap varied upon the increment of doping concentration, starting from 2.610 eV to 2.7 eV. Gas sensor measurement of pure and doped V2O5 demonstrated a sensitivity to NO2 gas, and the sensitivity expanded upon the increment of operation temperature. The greatest sensitivity was found to be about 99%, while best response time of 10s and recovery time of 18s were recorded using the 4% Sm2O3 sample at 50 °C.
社區影響反饋問卷: 使用手冊
Authors: LAU Ka Hing , SNELL Robin Stanley
Published: April 2021

服務學習是香港以及全球不少中學及大學廣為採用、深具成效的一種經驗教學法。透過學生、導師、社區夥伴及教育機構的攜手合作，服務學習帶領學生走出課室去服務社區。學生得以學以致用，服務社區。社區在另一方面給予學生生動實在的教育，同時也受益於學生的服務。 現時針對服務學習的研究普遍著重對學生發展的益處，較少對社區夥伴或所服務社區的影響。其中一個原因是，現已有不少可以量度服務學習對學生學習的影響的工具，但對於有效地量度服務學習對社區的影響仍然存在不少困難，並且缺乏工具。 有見及此，我們希望此「社區影響反饋問卷」能填補這個缺口。此問卷旨於從社區夥伴的角度，去瞭解服務學習對他們以及服務受眾的影響。問卷涵蓋三個範疇並通過三方面評估服務學習對社區夥伴的影響，即：實現機構使命、增加機構資源，及獲得新知識、洞見、想法及技巧。同時亦包括量度服務受眾獲益於服務學習項目的程度、對整體社區影響、社區協作夥伴會否繼續參與及推薦服務學習等題項，藉此取得相關的關鍵績效指標。 此用戶手冊詳細介紹此「社區影響反饋問卷」可以如何使用。附錄亦載有問卷的中譯本。我們希望中譯本能協助更多社區夥伴參與評估服務學習項目對社區的影響，並將他們的經驗轉化成範例，促進服務學習的進一步發展，並為社區帶來更深遠及持續的好處。
Interactive Mind Map: A Model for Pedagogical Resource
Authors: Tavares Luis Antonio , Meira Matheus Carvalho , Amaral Sérgio Ferreira do
Published: April 2021

This paper presents an extension of the mind map pedagogical tool, a conception in which the mind map becomes interactive and dynamic. We took advantage of all the mind map’s learning potential and benefits, and we add new ones when we propose the interactive mind map tool. We develop a model in which the teacher would have an authoring tool for creating a mind map with its elements, relationships, and interactive content related to each map element. The proposed tool is rich media, as it incorporates different types of media, allowing it to reach students with different learning profiles and needs. Furthermore, the technological aspect brings the school closer to the student’s reality.
How to draw the line – Raman spectroscopy as a tool for the assessment of biomedicines
Authors: Kamp Christel , Becker Björn , Matheis Walter , Öppling Volker , Bekeredjian-Ding Isabelle
Published: April 2021

Biomedicines are complex biochemical formulations with multiple components that require extensive quality control during manufacturing and in subsequent batch testing. A proof-of-concept study has shown that an application of Raman spectroscopy can be beneficial for a classification of vaccines. However, the complexity of biomedicines introduces new challenges to spectroscopic methodology that require advanced experimental protocols. We further show the impact of analytical protocols on vaccine classification using R as an Open Source data analysis platform. In conclusion, we advocate for standardized and transparent experimental and analytical procedures and discuss current findings and open challenges.
Etiologies, profile patterns and characteristics of children with short stature in Jordan
Authors: Alassaf Abeer , Gharaibeh Lobna , Ibrahim Sarah , Odeh Rasha
Published: April 2021

Objectives

Childhood growth influences their social and psychological behavior, and abnormal growth may reflect underlying pathological etiologies. It is important to diagnose children with short stature as early as possible to be able to manage treatable causes. We aim to study etiologies and characteristics of short stature in children in Jordan.

Methods

This is a cross-sectional retrospective review of the medical records of children diagnosed with short stature at a referral university hospital. Clinical characteristics, auxological, laboratory, and radiological investigations were collected and analyzed.

Results

Among a total of 551 children diagnosed with short stature, the number of boys was significantly higher than girls, 304 (55.2%) and 247 (44.8%), respectively with a p-value of 0.015. Average age at presentation for all patients was 10.24 ± 3.23, with no significant difference between boys and girls. Pathological etiology was higher than normal variants 55.7 and 44.3%, respectively with p=0.007. Constitutional delay of growth and puberty (CDGP) was the most frequent cause in the normal variant group, 59.8%. Among the pathological group, the most common etiology was growth hormone deficiency (32.2%) with mean age of presentation of 9.40 years and was not significantly different from the age in other etiological groups, 9.44 years and p=0.931.

Conclusions

Growth monitoring of children should start at an early age for boys and girls. Referral to the pediatric endocrine clinic should be considered when growth problems are suspected for accurate diagnosis and etiology profiling.
Energy efficiency in mechanical pulping – definitions and considerations
Authors: Sandberg Christer , Ferritsius Olof , Ferritsius Rita
Published: April 2021

Production of mechanical pulps requires high specific electrical energy compared to many other attrition processes. In Scandinavia, the lowest specific refining energy for production of thermomechanical pulp is around 1800 kWh/t for newsprint quality, which is roughly 60 times higher than for crushing of stone to a similar size distribution. The high specific energy demand for refining has naturally motivated large efforts in the search for improved efficiency. It is always practical to be able to quantify improvements in efficiency for comparison of process designs and of different machine types. However, there is no commonly accepted definition of efficiency for mechanical pulping processes. In published work within mechanical pulping, energy efficiency has been presented in different ways. In this paper, we discuss definitions of energy efficiency and aspects that ought to be considered when energy efficiency is presented. Although focus of this work is on energy efficiency for refiner processes, the principles can be applied to other types of mechanical pulping processes such as stone groundwood.
Polyphenylene sulfide-coated wrench composites by nanopinning effect
Authors: Liu Yusong , Meng Fanbin , Huang Jichuan , Ni Lijuan , Shen Yingdong , Zhang Liyan
Published: April 2021

When using a wrench, the nut is easily damaged due to improper operation or impact. Although coating a polymer layer on the surface of the wrench can effectively solve the above problem, the layer is easy to be deboned due to the lack of adhesion between the polymer and the surface of the wrench. Herein, we implemented an anodizing treatment strategy on the surface of the wrench to obtain a porous oxide film. Interestingly, during the anodization process, micro-nanopores with a specific diameter can be obtained by adjusting the voltage, temperature, and electrolyte concentration. Furthermore, the ammonium fluoride/ethylene glycol electrolyte was used to etch the formed large hole to form the large hole sleeve small hole structure. In order to inject polyphenylene sulfide (PPS) molecules into multiscale holes to form a pinning effect, we also used nano molding technology to inject PPS into the metal surface. The results showed that the adhesion between PPS and the wrench was greatly improved compared with the commonly used dip coating method.
Pressure and size dependent investigation of ultrasonic and thermal properties of ScRu intermetallic
Authors: Khan Mohd Aftab , Kumar Mahendra , Yadav Chandreshvar Prasad , Pandey Dharmendra Kumar
Published: April 2021

The present work is focused on the determination of elastic, mechanical, ultrasonic and thermal properties of ScRu intermetallic under the variation of pressure 0–60 GPa and particle size 5–40 nm. Initially, the second order elastic constants (SOECs) have been computed under a potential model approach, in which interaction potential is defined by Coulomb and Born–Mayer potentials. Later on, the estimation of mechanical, ultrasonic and thermo-physical parameters has been performed using SOECs. The ultrasonic velocities are estimated in the same pressure/particle size range for wave propagation along 〈100〉 crystallographic direction. It is found that elastic constants, ultrasonic velocities, Debye average velocity, specific heat at constant volume, thermal energy density, thermal conductivity and melting point enhance with increase in pressure and decay in particle size in chosen intermetallic. The analysis of the obtained results reveals that the elastic, mechanical and thermal properties of ScRu intermetallic shall enhance effectively under pressure in comparison to decay in particle size.
State-Dependent Behavior of a Crushable Sand in Drained Triaxial Tests
Authors: Yu Fangwei
Published: April 2021

This article presents a laboratory experimental study on the state-dependent behavior of a crushable sand that was crushed progressively in a number of the drained triaxial tests. The critical state line of sand showed a straight line in the e-logp′ plane, in the e-p′α=0.7 plane and in the q-p′ plane despite of involving the progressive particle breakage. It showed a family of the relations between stress ratio and dilatancy factor rather than a unique stress-dilatancy relation. While increasing the initial void ratio or the initial confining pressure, the peak-state friction and maximum dilatancy angles of sand showed a decrease, but the peak-state basic friction angle of sand increased. Linear representation was revealed for the relations of the maximum dilatancy angle - the peak-state stress ratio and the peak-state basic friction angle - the peak-state stress ratio. An increase in the peak-state state parameter resulted in a linear decrease of the peak-state friction and dilatancy angles of sand, but a linear increase of the peak-state basic friction angle of sand. It revealed a unique linear friction-dilatancy relation of sand incorporating the progressive particle breakage. The peak-state volumetric strain and deviator strain of sand increased while increasing the initial void ratio or the initial confining pressure or the peak-state state parameter, but decreased with increasing the peak-state stress ratio. The peak-state dilatancy factor d incorporating the progressive particle breakage decreased linearly with increasing the peak-state stress ratio, but linearly increased along the increase of the peak-state state parameter. Dilatancy of sand should be dependence of the pressure and density of sand as well as the progressive particle breakage.
Experimental study on properties of mechanical resistance of polyamide in clay soil
Authors: Sivapriya S.V. , Gokul Krishnan J. , Reddy Bijivemula Sruthi , Roshan R. , Mohammed Syed
Published: April 2021

The presence of clay soil causes problems at the base of the structure: it swells when wet and shrinks when dry, which provides a reduction in the resistance to cutting of the soil. Plastic waste in the form of polyamide powder (PA-12) from the 3D printing industry can be used to improve the mechanical properties of the soil. This experimental study is an attempt to combine these two objectives of stabilizing the soil by using waste PA-12. The mechanical and shear resistant properties gave us confidence in choosing PA-12 as a stabilizer in clay soils, making them composite soils.
Approximation of Torricelli's law with Euler's method and an instrumented water tank with ultrasonic sensor
Authors: Serrano Pérez Edgar
Published: April 2021

In this work, the development of a computer system that has as processing core, an Arduino Nano based board, that collects and processes the signals of a low-cost ultrasonic sensor is presented. The computer system allows monitoring the evolution over time of the height of the water into a container once it begins to empty through a hole in the bottom of it, thus revisiting Torricelli's law with a technological approach using a instrumented container by a computerized electronic data capture and processing data system. The work presents the electrical connection diagrams to interconnect the microcontroller based board and the ultrasonic sensor, as well as the source code used during data acquisition and processing. A comparison of the experimental results is made with results obtained when using the particular analytical solution for the problem, also with the results obtained from implementing the Euler method in obtaining an approximate numerical solution. The presented computer system can be modified and adapted for various academic, educational and research purposes in the various fields of computer engineering, computer systems and mechatronics.
Das Wist-Jubiläumsfragespiel: 19 aus 71
Authors: Beck Hanno
Published: April 2021

1971 wurde die Zeitschrift WiSt von den Herausgebern Prof. Dr. Dr. h.c. Erwin Dichtl und Prof. Dr. Dr. h.c. mult. Otmar Issing ins Leben gerufen.In unserer Serie beantworten Autorinnen und Autoren der Zeitschrift 19 Fragen aus 71. Warum gerade 19 aus 71? Die Zahlen sind an das Jahr 1971 angelehnt. Für den Fragebogen haben wir uns unter anderem den „Proust´schen Fragebogen“ zum Vorbild genommen. Ursprünglich ist dieser ein beliebtes Gesellschaftsspiel, das einen fast unendlichen Spielraum von Antwortmöglichkeiten gibt: Die Person kann alles über sich preisgeben oder ein Rätsel bleiben. Gedacht ist es als ein Spiel, ein launiger Zeitvertreib, um einen kurzen, persönlichen Blick hinter den offiziellen Autorenlebenslauf zu werfen und unsere Autorinnen und Autoren etwas näher kennenzulernen.Aus 71 Fragen wählen wir für jeden Teilnehmer zufällig 19 Fragen aus. Von diesen können die Autorinnen und Autoren insgesamt fünf Fragen mit solchen aus dem Pool der übrigen 52 Fragen austauschen. Der vollständige Fragenkatalog ist auf unserer Homepage abrufbar. In diesem Heft fragen wir Prof. Dr. Hanno Beck.
Soziale Innovation
Authors: Herstatt Cornelius , Kruse Daniel J.
Published: April 2021

Dieser Beitrag befasst sich mit unterschiedlichen Sichtweisen auf Soziale Innovation und zeigt verschiedene Facetten dieses neuen Innovationsbegriffs auf. Wir geben ferner einen Überblick über den aktuellen Forschungsstand mit Blick auf Perspektiven und Besonderheiten.
Agilität und Agilitätsmanagement
Authors: Sellinger Matthias , Thomaschewski Dieter , Völker Rainer
Published: April 2021

Im Beitrag beschäftigen sich die Autoren mit einem der aktuellen Top-Trends in der Managementliteratur und der betrieblichen Praxis - dem Agilitätsmanagement. Nach einer kurzen Einführung wird skizziert, welche Managementaufgaben durch Agilität angesprochen werden und wie die Ambidextriedebatte hilft festzustellen, wann sich Agilität lohnt.
Wie der DAX® zu seinen Punkten kommt: Berechnung eines Aktienindex unter Berücksichtigung ausgewählter Ereignisse
Authors: Ostendorf Ralf Jürgen , Mays Victor
Published: April 2021

Die Indizes der DAX®-Familie gelten als die bedeutendsten deutschen Aktienindizes. Als Kennzahl dienen sie u.a. als Grundlage für Finanzderivate oder dazu, die Kursentwicklungen eines Marktes auf einen Blick zu verdeutlichen. Die vorliegende Fallstudie soll die Bedeutung verschiedener Einflüsse auf einen Index und dessen Berechnung verdeutlichen.
Realoptionsmodelle für Investitionsentscheidungen
Authors: Kram Marius , Gschmack Sigrid
Published: April 2021

Die im Investitionscontrolling verwendeten Realoptionsmodelle für Investitionsentscheidungen werden inzwischen auch in der Unternehmensbewertung eingesetzt. Besonders bei der Bewertung von Wachstumsunternehmen bringen die Realoptionsmodelle Vorteile gegenüber der traditionell verwendeten Discounted Cash Flow-Methode (DCF-Methode) mit sich.
Management-Control-Systeme in deutschen Start-ups
Authors: Kister Niklas , Knauer Thorsten , Schwering Anja
Published: April 2021

Aufgrund ihrer komplexitätsreduzierenden Eigenschaften sind Management-Control-Systeme (MCS) ein wichtiges Instrument für die Professionalisierung von Start-ups. MCS können helfen, Unsicherheit zu vermeiden und das Insolvenzrisiko reduzieren. Dieser Beitrag gibt einen Einblick in die Verwendung von MCS in deutschen Start-ups und untersucht ausgewählte Einflussfaktoren auf die Einführung von MCS.
Controlling in digitalen Geschäftsmodellen
Authors: Guggemos Tobias
Published: April 2021

Für die Erfassung einer modernen Controlling-Funktion werden aktuelle Veränderungen von Geschäftsmodellen diskutiert. Daraus leiten sich neue Schwerpunkte in den Tätigkeiten und Kompetenzen von Controllern ab. Neben Business Analytics steht das Controlling von Geschäftsmodellinnovationen aufgrund des dynamischen Umfelds zunehmend im Vordergrund.
Retourencontrolling im Online-Handel
Authors: Deges Frank
Published: April 2021

Retouren sind ein elementarer Bestandteil eines jeden E-Commerce Geschäftsmodells. Sie verursachen hohe Kosten und belasten durch ihre zeitverzögerte Umsatzbereinigung den Erfolgsausweis und die Profitabilität. Es werden Instrumente und Maßnahmen aufgezeigt, mit denen Online-Händler ihre Retourenquoten senken und die Verarbeitung und Wiederverwertung von Retouren kostenoptimiert steuern können.
SAP® S/4HANA-Transformationsprojekte im Finanzbereich
Authors: Alexander Svatopluk , Fahn Sven , Pedell Burkhard , Speth Michael
Published: April 2021

Der Beitrag zeigt die Ergebnisse einer Kurzumfrage bei Verantwortlichen für SAP® S/4HANA-Transformationsprojekte im deutschsprachigen Raum. Dabei wurden insbesondere die verfolgten Ziele, die gewählten Bereitstellungsoptionen und Transformationsansätze, die Ausgestaltung des Managements von Transformationsprojekten (Business Case und Projektmanagementansatz) sowie Risiken und Herausforderungen erhoben. Es wurde auch nach dem Einfluss der COVID-19-Pandemie auf SAP® S/4HANA-Transformationsprojekte gefragt.
Tor, Tor, Tor!
Authors: Berding Klaus , Hoffjan Andreas
Published: April 2021

Das Deutsche Fußballmuseum ist ein lebendiger Erlebnis- und Erinnerungsort der deutschen Fußballgeschichte. Dabei steht die Information über fußballhistorische Ereignisse und die Entwicklung des Sports in all seinen Facetten ebenso im Mittelpunkt wie soziale und gesellschaftliche Themen rund um den Fußballsport. Das Deutsche Fußballmuseum ist mit jährlich über 200.000 Besucherinnen und Besuchern eine der meistbesuchten und wirtschaftlich erfolgreichsten Kultur- und Freizeiteinrichtungen in Nordrhein-Westfalen. Verantwortlich für das Deutsche Fußballmuseum ist die DFB-Stiftung Deutsches Fußballmuseum gGmbH. Die Gesellschafterversammlung der gemeinnützigen GmbH besteht zu gleichen Teilen aus Vertretern des DFB-Präsidiums und der Stadt Dortmund.
Evaluating the Parenting of Caregiving Grandparents
Authors: Forman Sylvia
Published: April 2021

Background and Purpose: In Philadelphia, over 15,000 grandparents are primary caregivers for grandchildren.  Children raised by grandparents have increased risk for health and behavior issues.  The SOWN Grandfamily Resource Center (GFRC) provides social services and parenting education for caregiving grandparents.  This project investigates whether the annual Department of Human Services (DHS) Parenting pre- and post-survey measures parenting changes for grandparents participating in the GFRC.  Methods: Selected DHS survey questions were grouped into subscales measuring social support and parenting practices.  Associations between social support and parenting were examined, and average subscale scores and percentage of grandparents demonstrating positive beliefs and practices were compared between 16 matched pre- and post-surveys using paired t-tests and McNemar’s tests.  Results:  McNemar’s tests determined the changes from pre- to post-survey were not statistically significant, with p-values between .625 and 1.  The change in mean score for nurturing behavior was statistically significant, .  Social support had a moderate, statistically significant, positive association with all parenting measures.  Conclusion:  Participants averaged 4.1 years of GFRC participation and demonstrated high levels of initial knowledge and parenting practice, but not a significant change from pre to post.  The positive association between social support and parenting practice is supported by research that a caregiver’s distress negatively impacts parenting.  Social relevance:  The parenting qualities included here can alleviate some of the health and behavior problems experienced by children exposed to trauma as well as reduce the parenting stress experienced by caregiving grandparents.
Public Health Protection Against Bioterrorism via Respiratory Pathogenic Viral and Bacterial Agents using Protective Face Masks
Authors: Brookstein David
Published: April 2021

The widespread respiratory transmission of the Covid-19 virus has taught us the importance of face masks to mitigate both the community spread of the virus and protection of wearers by face masks.  As such, there could be an extremely adverse public health possibility where respiratory pathogenic agents could be spread as a means of bioterrorism.  While eventually vaccines could mitigate wide spread infection, protective face masks are an important way to immediately   prevent respiratory infections from various pathogenic agents.  In view of the possibility of respiratory-based bioterrorism it is critical that the public might have to adopt universal usage of face masks.  The CDC recommends that all families stockpile respiratory protection as part of their personal pandemic plan because face masks should be worn by all individuals during a pandemic especially one caused by bioterrorism.
Multidisciplinary Assessment and Management of a Complex Patient Who Underwent Bariatric Surgery for Clinically Severe Obesity: A Case Report
Authors: Sarwer David
Published: April 2021

No abstract submitted. Let me know if you need one and I'll add one.
Perjanjian Pembiayaan Leasing Terkait Hukum Jaminan Dalam Upaya Pengembangan Hukum Perjanjian Di Indonesia Dikaitkan Dengan Politik Hukum
Authors: Nahrowi Nahrowi , Masyrofah Masyrofah
Published: April 2021

Regulations that become positive state laws, when they are made, cannot be separated from political influence, both from the executive, legislative and social conditions. This factor affects the speed of regulation. This economic interests content includes those in power, owners of capital, or the community's interests. The history of regulation development in the legal politics behind the regulation include leasing and guarantees, starting from buying and selling in the Civil Code, guarantees when lending and borrowing up to the minister of Finance. How is the development of leasing and guarantee law, the laws that govern it and how the rule of law corridors to the regulatory needs of the development of treaties on assets are the focus of discussion in this journal article.Keywords: Leasing; Guarantee Law; Legal Politics AbstrakPeraturan yang menjadi hukum positif negara, saat dibuat  tidak lepas dari pengaruh politik, baik pengaruh pihak eksekutif, legislatif dan kondisi sosial masyarakat. Anasir ini mempengaruhi cepat tidaknya suatu peraturan saat dibuat, muatan kepentingan ekonomi pemegang kekuasaan, pemilik modal ataupun kepentingan masyarakat. Sejarah perkembangan suatu peraturan dari waktu kewaktu, dapat terlihat politik hukum dibalik peraturan tersebut, misalkan ketentuan leasing dan jaminan, berawal dari jual-beli yang ada dalam KUHPerdata, jaminan saat pinjam meminjam sampai dengan Peraturan-peraturan Menteri Keuangan. Bagaimana perkembangan leasing dan hukum jaminan, perundang-undangan yang mengaturnya serta bagaimana koridor negara hukum terhadap kebutuhan peraturan dari perkembangan perjanjian-pejanjian dalam harta kekayaan menjadi fokus pembahasan dalam artikel jurnal ini.Kata Kunci: Leasing; Jaminan; Kebijakan Hukum
Firearms Injuries Involving Young Children in the United States During the COVID-19 Pandemic
Authors: Cohen Joanna S. , Donnelly Katie , Patel Shilpa J. , Badolato Gia M. , Boyle Meleah D. , McCarter Robert , Goyal Monika K.
Published: April 2021

OBJECTIVES

Increased rates of firearm ownership, school closures, and a suspected decrease in supervision during the coronavirus disease 2019 (COVID-19) pandemic place young children at increased risk of firearm injuries. We measured trends in firearm injuries in children and inflicted by children discharging a firearm during the pandemic and correlated these changes with a rise in firearm acquisition.

METHODS

In this cross-sectional study with an interrupted time series analysis, we used multiyear data from the Gun Violence Archive. We compared trends in (1) firearm injuries in children younger than 12 years old and (2) firearm injuries inflicted by children younger than 12 years old during the pre-COVID-19 period (March to August in the years 2016–2019) and during the first 6 months of the COVID-19 pandemic (March 2020 to August 2020). Linear regression models were developed to evaluate the relationship between firearm injuries and new firearm acquisitions.

RESULTS

There was an increased risk of (1) firearm injuries in young children (relative risk = 1.90; 95% confidence interval 1.58 to 2.29) and (2) firearm injuries inflicted by young children (relative risk = 1.43; 95% confidence interval 1.14 to 1.80) during the first 6 months of the COVID-19 pandemic as compared to the pre-COVID-19 study period. These increased incidents correlate with an increase in new firearm ownership (P < .03).

CONCLUSIONS

There has been a surge in firearm injuries in young children and inflicted by young children during the first 6 months of the COVID-19 pandemic. There is an urgent and critical need for enactment of interventions aimed at preventing firearm injuries and deaths involving children.
Remote and non-invasive monitoring of patients with COVID-19 by smartphone
Authors: Mazzu-Nascimento Thiago , Nogueira Evangelista Danilo , Abubakar Obeedu , Geraldo Alves Souto Bernardino , Domingues Lucas Vinicius , Furtado Silva Diego , Nogueira-de-Almeida Carlos Alberto
Published: April 2021

The pandemic caused by the new coronavirus (SARS-COV-2) has led to more than two million deaths in the world by March 2021. The worldwide call to reduce transmission is enormous. Recently, there has been a rapid growth of telemedicine and the use of mobile health (mHealth) in the context of the COVID-19 pandemic. Smartphone accessories such as a flashlight, camera, microphone, and microprocessor can measure different clinical parameters such as oxygen saturation, blood pressure, heart rate, breathing rate, fever, pulmonary auscultation, and even voice analysis. All these parameters are of great clinical importance when evaluating suspected patients of COVID-19 or monitoring infected patients admitted in various hospitals or in-home isolation. In remote medical care, the results of these parameters can be sent to a call center or a health unit for interpretation by a qualified health professional. Thus, the patient can receive orientations or be immediately referred for in-patient care. The application of machine learning and other artificial intelligence strategies assume a central role in signal processing and are gaining much space in the medical field. In this work, we present different approaches for evaluating clinical parameters that are valuable in the case of COVID-19 and we hope that soon all these parameters can be measured by a single smartphone application, facilitating remote clinical assessments.
Processos de habilitações ao clero secular de Mariana (1745-1764)
Authors: Faria Duarte Josimar
Published: April 2021

O estudo em tela versa sobre os Processos de habilitação ao clero secular de Mariana, durante o governo episcopal de frei Manuel da Cruz (1745-1764). O instrumento de pesquisa consistiu no uso do método prosopográfico, proposto pela história regional. As fontes de sustentação empíricas utilizadas foram documentos manuscritos consultados no Arquivo Eclesiástico da Arquidiocese de Mariana (AEAM). O aparato teórico conceitual refere-se à recente historiografia sobre império, redes, conexões e relações entre centro e periferia, poder central e poder local. Os resultados dessa pesquisa são apresentados aqui a partir de narrativas modais.
A História ilustrada e diligente de Olegário Herculano de Aquino e Castro (1892-1906)
Authors: Detoni Piero
Published: April 2021

Este artigo reabilita as prescrições historiográficas de um estudioso esquecido pelos círculos de leitores de História da Historiografia brasileira. Falamos de Olegário Herculano de Aquino e Castro, presidente do (IHGB) e do (STF) no alvorecer republicano. Acredita-se que Olegário Herculano teve papel de destaque na defesa das atividades do IHGB em um momento de profundas incertezas, pois era capaz de moderar a herança do passado monárquico e as expectativas republicanas. É possível dizer que o seu discurso oficial, considerado uma fala autorizada e percebido em suas alocuções presidenciais, seja produto e produtor da experiência historiográfica vivida no IHGB das primeiras décadas republicanas. Apesar de não serem consensuais, as suas prescrições sinalizavam para os interesses de uma parcela significativa dos sócios da agremiação carioca. Em suma, o nosso artigo pretende abordar os contextos epistêmicos (e políticos) que enredavam as reflexões de Olegário Herculano, bem como apresentar ao público em geral esse homem de letras e de Estado ainda pouco conhecido.
Evaluation of proteinase K-resistant prion protein (PrPres) in Korean native black goats carrying a potential scrapie-susceptible haplotype of the prion protein gene (PRNP)
Authors: Won Sae-Young , Kim Yong-Chan , Jeong Byung-Hoon
Published: April 2021

Prion disease is a fatal neurodegenerative disease with a broad host range in humans and animals. It is caused by proteinase K-resistant prion protein (PrPres). In previous studies, a heterogeneous infection in Cervidae and Caprinae was reported. Chronic wasting disease (CWD) has been frequently reported as the only prion disease in Korea that occurs in livestock. Thus, there is a possibility of transmission of CWD to Korean native black goats. However, PrPres has not been investigated thus far in Korean native black goats. We found strong linkage disequilibrium between c.126G>A and c.414T>C (r2 = 1) and between c.718C>T and c.126G>A (r2 = 0.638). In addition, the haplotype GTGTAAAC (representing codons 42, 102, 127, 138, 143, 146, 218 and 240) showed the highest frequency with 45.1%. Among 41 Korean native black goats, 20 animals (48.78%) were homozygous for the susceptible haplotypes (histidine at codon 143, asparagine at codon 146 and arginine at codon 154). Interestingly, we did not detect PrPres bands in any of the tested animals, including the 20 animals carrying potential scrapie susceptible haplotypes.
First record of Caecilia guntheri Dunn, 1942 (Gymnophiona, Caeciliidae) in Central America
Authors: Elizondo-Lara Luis Carlos
Published: April 2021

I report the first encounter in Central America of an individual of Caecilia guntheri Dunn, 1942 (Gymnophiona, Caeciliidae). The individual was observed and collected in a primary evergreen submontane forest in Cerro Pirre, Darien Province, Republic of Panama. It was identified mainly by the low counts of secondary and primary folds. The encounter of this individual of C. guntheri highlights the disjunct populations and apparently the results of dispersion of this species from South to Central America by biotic exchange as result of the closure of the Isthmus of Panama.
Pengaruh Pelimpahan Wewenang Terhadap Kualitas Pelayanan di Kantor Kecamatan Cileunyi
Authors: Qohar Usep Muhammad Abdul , Hidayat Asep
Published: April 2021

AbstractThe implementation of effective and efficient service quality in the Sub-district office environment illustrates the implementation of delegation of authority given by the Regent to the District Head. Where the District Head carries out some of the functions the Regent gives to provide services to the community in the sub-district environment. As regulated by the Regent of Bandung Regency No. 60 of 2011 concerning the delegation of authority for some of the Regent's affairs to the District Head. But in reality on the ground, there are some problems regarding services that have not yet been implemented which have resulted in ineffective implementation of services to the community. The purpose of this study is to determine how much influence the authority, responsibility and accountability regarding the transfer of authority in the District of Cileunyi. This study uses a theory from Hasibuan which consists of three authority delegation variables, namely authority, responsibility, accountability. As for service quality using the theories of Zeithaml, Parasuraman, Leonard quoted by Hardiyansyah. The sample used was 30 employees in the Cileunyi District office. The research method used is a quantitative method with an associative approach that aims to determine the relationship of one or more variables, namely the influence of delegation of authority to the quality of service in the district of Cileunyi. The results of this study indicate that the influence of delegation of authority (authority, responsibility, accountability) has an influence on the quality of service in the Cileunyi District office of 0.555 or 55.5%, then it is included in the "High" influence criteria. For the remaining 100% - 55.5% = 44.5% influenced by other variables not examined by researchers.
Pengawasan Pajak Reklame di Badan Pengelolaan Pendapatan Daerah Kota Bandung
Authors: Ikhsan Irfan Saeful , Pikri Faizal
Published: April 2021

This research is motivated by the author's interest in the efforts of the Bandung City Regional Revenue Management Agency in monitoring the billboard tax. Based on the observations made, there is a problem, namely the advertisement tax revenue is not in accordance with the expected target due to the lack of direct implementation of the advertisement tax supervision, there are still taxpayers who put up billboards but do not report first, lack of human resources in monitoring the billboard tax supervision. in the Regional Revenue Management Agency. The research method used in this research is a qualitative approach with descriptive research type. Data collection techniques using through interviews, observation, documents and triangulation. The results of this study indicate that the advertisement tax supervision has implemented the characteristic theory of effective supervision. However, there are still dimensions that have not worked well, among others: in an organizational realistic dimension because the number of human resources under supervision is not sufficient. inhibiting factors, namely limited human resources, lack of awareness of taxpayers of local taxes, and the determination of the potential for advertisement tax that has not been on target. Efforts are made to monitor the billboard tax, namely increasing the number of human resources and increasing their competence through education and training, increasing the socialization of understanding about the billboard tax to the public, conducting periodic supervision of taxpayers so that there are no deviations or deviations. there are data errors submitted by taxpayers, and strict enforcement of the implementation of billboard tax supervision.