bluuebunny/crossref_metadata_2025 huggingface dataset:
Growth of centimeter-scale perovskite single-crystalline thin film via surface engineering
Authors: Deng Yu-Hao , Yang Zhen-Qian , Ma Ren-Min
Published: July 2020

Modern electronic and photonic devices rely on single-crystalline thin film semiconductors for high performance and reproducibility. The emerging halide perovskites have extraordinary electronic and photonic properties and can be synthesized via low cost solution-based methods. They have been used in a variety of devices with performance approaching or over the devices based on conventional materials. However, their solution based growth method is intrinsically challenge to grow large scale single-crystalline thin film due to the random nucleation and isotropous growth of the crystal. Here, we report the growth of centimeter-scale perovskite single-crystalline thin films by controlling the nucleation density and growth rate of the crystal under a spatially confined growth condition. The hydrophobic treatment on substrates inhibits nucleation and accelerates the growth of single-crystalline thin film, providing enough space for initial nucleus growing up quickly without touching each other. Single-crystalline perovskite thin-film with an aspect ratio of 1000 (1 cm in side length, 10 μm in thickness) has been successfully grown. The low trap density and the high mobility of the as-grown thin film show a high crystallinity. The photodetector based on the perovskite thin film has achieved a gain ~ 104, benefitting from the short transit time of the carries due to the high mobility and thin thickness of the active layer. Our work opens up a new route to grow large scale perovskite single-crystalline thin films, providing a platform to develop high- performance devices.
Inhibitory effects of Mezoneuron benthamianum root extracts on oral cariogenic microorganisms and 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging radical
Authors: Osamudiamen Paul M. , Oluremi Bolaji B. , Osamudiamen Fisayo T. , Aiyelaagbe Olapeju O.
Published: July 2020

Background

Chewing sticks are commonly used as oral hygiene tool in Africa and reactive oxygen species have been linked to the cause of degenerative diseases because of their ability to induce oxidative damage to biological molecules. Plants have been a long source of dietary antioxidants as most plants have been found to exhibit excellent antioxidant potentials. Mezoneuron benthamianum is a plant that is used locally as chewing sticks in southwest, Nigeria, but its use as a therapeutic agent in dental caries, a disease caused by bacteria especially Streptococcus mutans is poorly investigated. This study was therefore designed to investigate the anticaries activities of the crude extracts of M. benthamianum root against four clinical oral pathogens (Staphylococccus aureus, Escherichia coli, Pseudomonas aeruginosa and Streptococcus mutans) and the antioxidant activities using 2,2-diphenyl-1-picrylhydrazyl (DPPH).

Results

The results of this study showed that M. benthamianum had a consistent activity against all the bacterial organisms tested, with the ethyl acetate extract having the highest anticaries activity with minimum inhibitory concentration values of 78 and 156 μg/mL, while the hexane extract had the least anticaries activity with MIC values of 2500 μg/ml against S. mutans and E. coli respectively. The results also revealed that the ethyl acetate and aqueous methanol extract exhibited a higher antioxidant activity (IC50 = 23.70 and 21.30 μg/mL) than standard ascorbic acid (IC50 = 38.20 μg/mL).

Conclusion

This study demonstrated the anticaries and antioxidant potentials of M.benthamianum and therefore justifies the folkloric use of M. benthamianum in oral hygiene.
Isolation and characterization of Pasteuria parasitizing root-knot nematode, Meloidogyne incognita, from black pepper fields in India
Authors: Mhatre Priyank Hanuman , Eapen Santhosh J , Chawla Gautam , Pervez Rashid , N Agisha V , Tadigiri Sirisha , M Nagesh
Published: July 2020

Root-knot nematode (RKN), Meloidogyne incognita, is one of the most lingering and difficult to manage pest of black pepper in India. The options for controlling RKN are becoming increasingly limited due to the potential risk involved in environmental and health hazards. Biological control using Pasteuria is one of the most effective and efficient ways of nematode management. Pasteuria spp. are obligate parasites of plant-parasitic nematodes and completely inhibit their fecundity. There is also a tremendous opportunity for the discovery of native strains adapted to local environmental conditions and nematode species. Therefore, in the present study, efforts were made to isolate the native strain of Pasteuria from the fields of black pepper. Random sampling was done from black pepper-growing areas of Kerala and Karnataka states of India. Out of 39 samples, Pasteuria was found in 8 samples from the fields of ICAR-IISR, Kozhikode, Kerala, India. The host range study revealed that the identified Pasteuria strain was very specific to M. incognita and completed its life cycle in RKN. Infected females laid no eggs or egg masses; thus, Pasteuria prohibited the total fecundity of the nematodes. The Pasteuria strain was named as IISR-MiP for it was found in the fields of ICAR-IISR and its specificity towards M. incognita. The average size of the identified Pasteuria strain IISR-MiP endospore was 2.75 μm. Light as well as scanning electron micrographs revealed 3 types of endospore attachments viz., conventional, inverted, and sideways. Further, it was found that endospores attached to the nematode cuticle in the maximum number in a conventional type of attachment (87.62%), followed by inverted (6.55%) and sideways attachments (5.82%). The inverted and sideways attachments were unique to the biology of Meloidogyne-Pasteuria interactions, indicating the presence of collagen-like fibres on the entire surface of Pasteuria endospores. Pasteuria strain IISR-MiP had the potential biocontrol capabilities and provided an opportunity for its evaluation against M. incognita on black pepper under field conditions.
ψ*-closed sets in fuzzy topological spaces
Authors: Allah M. A. Abd , Nawar A. S.
Published: July 2020

In this paper, we introduce a new class of fuzzy sets, namely, fuzzy ψ*-closed sets for fuzzy topological spaces, and some of their properties have been proved. Further, we introduce fuzzy ψ*-continuous, fuzzy ψ*-irresolute functions, and fuzzy ψ*-closed (open) functions, as applications of these fuzzy sets, fuzzy T1/5-spaces, fuzzy $$ {T}_{1/5}^{\psi \ast } $$

T

1
/
5

ψ
∗

-spaces, and fuzzy ψ*T1/5-spaces.
Raman tensor of layered black phosphorus
Authors: Zhu Yanming , Zheng Wei , Wang Weiliang , Zhu Siqi , Li Linxuan , Cheng Lu , Jin Mingge , Ding Ying , Huang Feng
Published: July 2020

Black phosphorus has a strong Raman anisotropy on the basal and cross planes due to its orthorhombic crystal structure. However, almost all the studies on black phosphorus’ anisotropy focus on basal plane with the cross plane neglected. Here, we performed a systematic angle-resolved polarized Raman scattering on both the basal and cross planes of black phosphorus and obtained its integral Raman tensors. It is discovered that when the polarization direction of excitation light is along different crystal axes, the Raman intensity ratio (Ixx : Iyy: Izz) of $$ {A}_g^1 $$

A
g
1

mode is 256:1:5. Besides, via calculation, it is confirmed that the strong Raman anisotropy mainly comes from different differential polarizability alone different directions. This phenomenon is also observed when it comes to the $$ {A}_g^2 $$

A
g
2

mode.
Who’s your coach? The relationship between coach characteristics and birth attendants’ adherence to the WHO Safe Childbirth Checklist
Authors: George Emily R. , Hawrusik Rebecca , Marx Delaney Megan , Kara Nabihah , Kalita Tapan , Semrau Katherine E.A.
Published: July 2020

Background: Research demonstrates that coaching is an effective method for promoting behavior change, yet little is known about which attributes of a coach make them more or less effective. This post hoc, sub-analysis of the BetterBirth trial used observational data to explore whether specific coaches’ and team leaders' characteristics were associated with improved adherence to essential birth practices listed on the World Health Organization Safe Childbirth Checklist.

Methods: A descriptive analysis was conducted on the coach characteristics from the 50 BetterBirth coaches and team leaders. Data on adherence to essential birth practices by birth attendants who received coaching were collected by independent observers. Bivariate linear regression models were constructed, accounting for clustering by site, to examine the association between coach characteristics and attendants’ adherence to practices. 

Results: All of the coaches were female and the majority were nurses. Team leaders were comprised of both males and females; half had clinical backgrounds. There was no association between coaches’ or team leaders’ characteristics, namely gender, type of degree, or years of clinical training, and attendants’ adherence to essential birth practices. However, a significant inverse relationship was detected between the coach or team leader’s age and years of experience and the birth attendants’ adherence to the checklist. 

Conclusion: Younger, less experienced coaches were more successful in promoting essential birth practices adherence in this population. More data is needed to fully understand the relationship between coaches and birth attendants.
Single-transcript multiplex in situ hybridisation reveals unique patterns of dystrophin isoform expression in the developing mammalian embryo
Authors: Hildyard John C. W. , Crawford Abbe H. , Rawson Faye , Riddell Dominique O. , Harron Rachel C. M. , Piercy Richard J.
Published: July 2020

Background: The dystrophin gene has multiple isoforms: full-length dystrophin (dp427) is principally known for its expression in skeletal and cardiac muscle, but is also expressed in the brain, and several internal promoters give rise to shorter, N-terminally truncated isoforms with wider tissue expression patterns (dp260 in the retina, dp140 in the brain and dp71 in many tissues). These isoforms are believed to play unique cellular roles both during embryogenesis and in adulthood, but their shared sequence identity at both mRNA and protein levels makes study of distinct isoforms challenging by conventional methods.

Methods: RNAscope is a novel in-situ hybridisation technique that offers single-transcript resolution and the ability to multiplex, with different target sequences assigned to distinct fluorophores. Using probes designed to different regions of the dystrophin transcript (targeting 5', central and 3' sequences of the long dp427 mRNA), we can simultaneously detect and distinguish multiple dystrophin mRNA isoforms at sub-cellular histological levels. We have used these probes in healthy and dystrophic canine embryos to gain unique insights into isoform expression and distribution in the developing mammal.

Results: Dp427 is found in developing muscle as expected, apparently enriched at nascent myotendinous junctions. Endothelial and epithelial surfaces express dp71 only. Within the brain and spinal cord, all three isoforms are expressed in spatially distinct regions: dp71 predominates within proliferating germinal layer cells, dp140 within maturing, migrating cells and dp427 appears within more established cell populations. Dystrophin is also found within developing bones and teeth, something previously unreported, and our data suggests orchestrated involvement of multiple isoforms in formation of these tissues.

Conclusions: Overall, shorter isoforms appear associated with proliferation and migration, and longer isoforms with terminal lineage commitment: we discuss the distinct structural contributions and transcriptional demands suggested by these findings.
Providing a policy framework for responsible gene drive research: an analysis of the existing governance landscape and priority areas for further research
Authors: Thizy Delphine , Coche Isabelle , de Vries Jantina
Published: July 2020

The progress in gene drive research has made the possibility of a future release in the environment probable. This prospect is raising new questions related to the adequacy of the policy frameworks in place to manage and regulate the research and its outcomes responsibly. A number of international mechanisms are exploring how to evaluate this technology. Amongst them, the Convention of Biological Diversity and the Cartagena Protocol, the review mechanisms of the World Health Organisation, and the International Union for Conservation of Nature are offering international fora for dialogue, while regional entities, such as the African Union, are developing specific frameworks to build their preparedness for oversight of gene drive organisms. In this manuscript, we review the existing regulatory landscape around gene drive research and map areas of convergence and divergence, as well as gaps in relation to guidelines for community engagement in gene drive research.
Fitness cost of insecticide resistance on the life-traits of a Anopheles coluzzii population from the city of Yaoundé, Cameroon
Authors: Nkahe Diane Leslie , Kopya Edmond , Djiappi-Tchamen Borel , Toussile Wilson , Sonhafouo-Chiana Nadege , Kekeunou Sevilor , Mimpfoundi Remy , Awono-Ambene Parfait , Wondji Charles Sinclair , Antonio-Nkondjio Christophe
Published: July 2020

Background: Pyrethroid resistance is rapidly expanding in An. gambiae s.l. populations across Sub-Saharan Africa. Yet there is still not enough information on the fitness cost of insecticide resistance . In the present study, the fitness cost of insecticide resistance on Anopheles coluzzii population from the city of Yaoundé was investigated.

 Methods: A resistant An. coluzzii colony was established from field collected mosquitoes resistant to both DDT and pyrethroid and selected for 12 generations with deltamethrin 0.05%. The Ngousso laboratory susceptible strain was used as control. A total of 100 females of each strain were blood fed and allowed for individual eggs laying, and then different life traits parameters such as fecundity, fertility, larval development time, emergence rate and longevity were measured. The TaqMan assay was used to screen for the presence of the L1014F and L1014S kdr mutations.

Results:  Field collected mosquitoes from the F0 generation had a mortality rate of 2.05% for DDT, 34.16% for permethrin and 50.23% for deltamethrin. The mortality rate of the F12 generation was 30.48% for deltamethrin, 1.25% for permethrin  and 0% for DDT. The number of eggs laid per female was lower in the resistant colony compared to the susceptible (p <0.0001). Insecticide resistant larvae were found with a significantly long larval development time (10.61±0.33 days) compare to susceptible (7.57±0.35 days). The number of emerging females was significantly high in the susceptible group compared to the resistant . The adults lifespan was also significantly high for susceptible (21.73±1.19 days) compared to resistant (14.63±0.68 days). Only the L1014F-kdr allele was detected in resistant population..

Conclusion: The study suggests that pyrethroid resistance is likely associated with a high fitness cost on An.coluzzii populations. The addition of new tools targeting specifically larval stages could improve malaria vectors control and insecticide resistance management.
APT3: Automated Product Traceability Trees Generated from GPS Tracks
Authors: Zhang Yaguang , Krogmeier James V. , Ault Aaron , Buckmaster Dennis
Published: July 2020

Abstract.

With increasing concerns about food safety in many countries, product traceability has become an important risk-management tool. It enables the identification of possible sources of defective goods and facilitates the withdrawal and recall of affected products to protect consumers from foodborne diseases. However, it is troublesome for farmers to maintain the records required by high-precision product traceability during harvesting because traditional traceability systems usually involve human labor in paperwork or expenses for equipment purchase and installation; in either case, the resulting records are tedious. In this article, a fully automatic algorithm is proposed for efficiently generating product traceability trees to visualize and store the full transport record of wheat from fields to elevators. Extending previous work on harvesting activity recognition via GPS tracks, this algorithm powers our fully automatic prototype product traceability system, APT3, and demonstrates great potential for tracing products solely with the GPS logs of the vehicles involved in harvest and transport. From the output traceability trees, the product yielded at any point in the field can be tracked all the way to the elevator where it was sold or stored by starting from the corresponding leaf node in the traceability tree and walking to the root of the tree. Furthermore, each truckload of product unloaded at any destination elevator can be traced back to where the product was harvested by following the tree in the opposite direction. In this way, the traceability records can be clearly visualized for farmers and easily used by other algorithms. Keywords: GPS, Harvesting, Precision agriculture, Product traceability, Traceability trees.
Minimization of the Rayleigh-Doppler error of differential absorption lidar by frequency tuning: a simulation study
Authors: Späth Florian , Behrendt Andreas , Wulfmeyer Volker
Published: July 2020

We present simulations suggesting that it is possible to minimize the systematic errors of differential absorption lidar (DIAL) measurements caused by the Rayleigh-Doppler effect by selecting an online frequency close to one of the inflection points on either side of the absorption line. Thus, it seems advantageous to select an absorption line of suitable cross section at these points on the line slopes rather than at the peak. First, we extend the classical simulation study of Ansmann (1985) for another water vapor absorption line but again with the online frequency at the line peak. As expected, we also found large systematic errors of more than 40% at the edges of aerosol layers and clouds. Second, we simulate the systematic errors for other online frequencies away from the peak for the same input profile. The results demonstrate that the errors vanish close to the inflection points. Since both the shape of the absorption lines and the width of the broadened backscatter signal depend on the atmospheric conditions, these optimum frequencies vary slightly with height and climatology. Third, we calculate the errors for a typical aerosol profile of the planetary boundary layer obtained from lidar measurements. With this case, we discuss how to select practically the online frequency so that the errors are minimized for all heights of interest. We found that the error reduces from 20 to < 1% at the top of the planetary boundary layer while, at the same time, the error reduces from 6 to 2% in 5 km.
Fontes Documentais de Acervos Escolares e o Ensino de História do Distrito Federal
Authors: De Assis Portela Cristiane
Published: July 2020

Neste artigo apresento reflexões sobre a experiência de constituição de um centro de memórias em uma escola pública do Distrito Federal- DF, o Centro de Ensino Médio Elefante Branco- CEMEB. Em um primeiro momento o texto descreve o processo de concepção e constituição do Centro de Memória(s) do Elefante Branco desde setembro de 2019, analisando as escolhas e os procedimentos para a identificação e classificação do conjunto documental. Em seguida busco problematizar as potencialidades do uso de fontes documentais de acervos escolares para os debates sobre identidade, pertencimento, memória, história local e patrimônio do Distrito Federal. Ao final, são sugeridas algumas possibilidades de uso deste tipo de fonte, exemplificando a partir de três documentos identificados no acervo.
O Poder Eclesiástico em Campanha (MG) e a Persistência do Patrimônio Edificado Religioso (1739-1825)
Authors: Rios de Carvalho Márcio Eurélio , Fernando Ribeiro Lopes Weigson
Published: July 2020

O artigo busca sistematizar algumas noções gerais sobre a organização eclesiástica de Minas Gerais, tomando como estudo de caso uma vila remanescente do período colonial mineiro – Campanha da Princesa –, que tem na religiosidade uma marca identitária, oriunda dos primeiros anos de colonização e povoamento do Sul mineiro. Indiretamente, procura-se abordar a presença do Estado e da Igreja como duas instituições centrais na dinâmica de controle social do Estado português nas Minas, por meio da política do Padroado. Recupera-se alguns dados iniciais e gerais sobre os principais templos religiosos erigidos nessa localidade, entre 1739 e 1825, com o intuito de demonstrar que todos eles possuem uma historicidade, particularmente aquelas relativas às modificações consideráveis na sua distribuição pelo espaço urbano e na sua importância histórica.
Intervenciones urbanísticas en clave higienista
Authors: Petrocelli Santiago Pablo
Published: July 2020

En todo proceso de planificación urbana subyace un particular sistema de valores, creencias y acciones que orienta las formas de pensar y gestionar la ciudad. La coyuntura, que coloca nuevamente a la Ciudad de Buenas Aires en el foco de una epidemia, genera una oportunidad para la discusión y elaboración de nuevos paradigmas urbanos, para lo cual la experiencia local del urbanismo higienista resulta un aporte relevante. En ese sentido, el objetivo de este trabajo es trazar un panorama de los problemas y enfoques que más calaron en las políticas urbanísticas de la Ciudad de Buenos Aires de fines del siglo XIX y comienzos del siglo XX; en articulación con su configuración socioespacial, el rol del Estado y de los profesionales de la ciudad en la representación y reconfiguración de problemas, intereses y realidades urbanas. En ese entonces, el higienismo atravesó el imaginario político argentino, en el cual permeó la idea de que el ordenamiento del espacio devendría en un ordenamiento de la sociedad, y que frente a la crisis epidemiológica, el Estado liberal debía dar paso a un Estado interventor para el saneamiento de la ciudad. En concordancia, la Municipalidad de Buenos Aires realizó múltiples intervenciones, físicas y normativas.
Premios Arquisur Investigación
Authors: Varios Autores
Published: July 2020

Trabajos producidos por alumnos o profesionales en formación.
Premios Arquisur Extensión
Authors: Varios Autores
Published: July 2020

Trabajos que incorporan el vínculo con la comunidad y se desarrollan en el marco de actividades curriculares durante un lapso acotado dentro del ciclo académico.
Premios Arquisur Extensión
Authors: Varios Autores
Published: July 2020

Proyectos aprobados en el marco de la convocatoria de Organismos Estatales, indistintamente subsidiados o no.
Resistência à fadiga cíclica dos instrumentos Reciproc e Mtwo nos movimentos rotatório e reciprocante
Authors: GAVINI Giulio , AKISUE Eduardo , Akemi Sacaguti KAWAKAMI Dirce , CALDEIRA Celso Luiz , de DEUS Gustavo , Priori ALCALDE Murilo , Táccio de Miranda CANDEIRO George
Published: July 2020

Objetivo: O objetivo do presente estudo foi avaliar a influência da liga (NiTi convencional e M-Wire) e do movimento (reciprocante e rotação contínua) na resistência à fadiga cíclica. Métodos: Quinze limas Reciproc R25 (VDW GmbH, Munique, Alemanha) foram usadas em movimento reciprocante (MR), enquanto trinta limas Mtwo 25.07 (VDW GmbH, Munique, Alemanha) foram usadas em MR (n=15) ou em rotação contínua (RC) (n=15). Os instrumentos foram submetidos a ensaios dinâmicos movidos por motor elétrico, que permitiram reproduzir o movimento de pecking motion, a 300rpm de velocidade. Os instrumentos simularam a instrumentação de um canal radicular curvo com 40o e 5mm de raio de curvatura. A fratura dos instrumentos foi detectada por um sensor digital, e o tempo e o número de ciclos foram registrados. Os dados foram analisados estatisticamente pelos testes ANOVA e de Tukey (p<0,05). Resultados: Os instrumentos Reciproc R25 movidos por MR alcançaram número significativamente maior (p<0,05) de ciclos antes da fratura (1.777,68±334,2 ciclos), quando comparados aos instrumentos MT 25.07 movidos por MR (610,67±126,3 ciclos) ou RC (432,23±183,2 ciclos). Conclusões: O movimento reciprocante mostrou resistência à fadiga cíclica significativamente maior, e os instrumentos de NiTi M-Wire apresentaram maior resistência à fadiga cíclica do que os instrumentos rotatórios de NiTi convencional.
Procedimento endodôntico regenerativo usando fibrina rica em plaquetas e leucócitos associada à cirurgia apical: relato de caso
Authors: MACHADO Georgia Luiza , BASTOS Hugo , ALMEIDA Amanda Caroliny , Suruagy PADILHA Walter , da Silva LIMOEIRO Ana Grasiela
Published: July 2020

Introdução: A cirurgia parendodôntica é uma alternativa ao tratamento endodôntico convencional, principalmente em casos envolvendo lesões perirradiculares associadas a processos osteolíticos, em que a terapia endodôntica convencional ou seu retratamento não obtiveram sucesso. Novos métodos terapêuticos têm ganhado espaço na clínica odontológica para esse tipo de caso, entre os quais se destaca a fibrina rica em plaquetas e leucócitos, que, ao concentrar e permitir uma liberação mais prolongada dos fatores de crescimento, promove uma modulação do processo reparador. Esse processo é baseado na otimização da regeneração tecidual através da inserção da membrana de fibrina. Objetivo: O objetivo do presente trabalho é apresentar, por meio do relato de um caso clínico, a utilização de fibrina rica em plaquetas e leucócitos em cirurgia parendodôntica, com intuito de reparo ósseo. Resultados: O acompanhamento clínico e tomográfico foi realizado após 190 dias, momento no qual foi constatada ausência de sintomatologia, bem como completo reparo da lesão e restabelecimento do osso cortical vestibular, além de ausência de lesão detectável em tomografia. Conclusão: No caso clínico relatado, houve uma completa regeneração tecidual da área envolvida na lesão.
Long-wavelength GaInNAs/GaAs Vertical-cavity Surface-emitting Laser for Communication Applications
Authors: Chaqmaqchee Faten A.
Published: July 2020

This paper presents a comprehensive study of optical and electrical properties of vertical-cavity surface-emitting lasers(VCSELS) for long wavelength communication applications. The device consists of GaInNAs/GaAs multi-quantum wells QWs that enclosed between standard top and bottom epitaxially grown on AlGaAs/GaAs distributed Bragg reflectors. The impact of driven currents and injecting optical powers through QWs layers on the output light emission is addressed. Room temperature spectra measurements are performed at various applied currents using 980 nm pump laser and maximum intensity amplitude at around 21 dB was achieved.
Representações sociais sobre escola e identidade profissional docente: Um estudo com estagiários em um curso de Licenciatura em Ciências no Brasil
Authors: Guridi Verónica Marcela , Cazetta Valéria , Viviani Luciana Maria , Dominguez Celi Rodrigues Chaves , Cubero Josely , Pioker-Hara Fabiana Curtopassi , Faht Elen Cristina
Published: July 2020

Este trabalho pretende investigar representações sociais de estudantes de um curso de Licenciatura em Ciências da Natureza de uma universidade pública brasileira, procurando responder às seguintes questões: Quais são as representações sociais de escola que os licenciandos trazem consigo? Qual a importância dessas representações no processo de constituição da identidade profissional docente? Como parte das atividades de uma disciplina de prática de ensino, foram coletados dados que incorporam narrativas textuais com apoio de material iconográfico, produzidos por 79 estudantes, entre os anos de 2011 e 2013. Por meio de uma análise qualitativa de representações sociais sobre a instituição escolar sob uma perspectiva cultural e histórica, foram identificadas três concepções predominantes: 1 – Os espaços escolares produzem um jogo de abertura e fechamento, com diversos níveis de controle e disciplina; 2- as relações pedagógicas estão associadas à autoridade, disciplina e transmissão de conhecimentos; e 3- os objetos da escola apontam para a ideia da instituição como ambiente isolado da sociedade mais ampla, com sua própria cultura. A presença dessas representações indica a prevalência de um longo processo de produção e de reconhecimento de aspectos da cultura escolar por parte dos estagiários, o que poderia ser considerado pelas propostas de formação docente que pretendam adotar posturas reflexivas.
Single-agent Finite Impulse Response Optimizer vs Simulated Kalman Filter Optimizer
Authors: Ab Rahman Tasiransurini , Ab. Aziz Nor Azlina , Abdul Aziz Nor Hidayati
Published: July 2020

Single-agent Finite Impulse Response Optimizer (SAFIRO) is a new estimation-based optimization algorithm which mimics the work procedure of the ultimate unbiased finite impulse response (UFIR) filter. In a real UFIR filter, the horizon length, N, plays an important role to obtain the optimal estimation. In SAFIRO, N represents the repetition number of estimation part that needs to be done in find-ing an optimal solution. On the other hand, Simulated Kalman Filter (SKF) is also an estimation- based optimization algorithm inspired by the estimation capability of Kalman filtering. In literature, substantial amount of works has been devoted to SKF, both in applied research and fundamental enhancements. Thus, in this paper, a performance comparison of both SAFIRO and SKF is presented. It is found that the SAFIRO outperforms the SKF significantly.
A Tutorial on Population-based Simulated Kalman Filter
Authors: Abdul Aziz Nor Hidayati , Ab. Aziz Nor Azlina , Muhammad Badaruddin , Md Yusof Zulkifli , Mohd Azmi Kamil Zakwan , Mohamad Mohd Saberi , Tsuboi Yusei
Published: July 2020

Simulated Kalman Filter (SKF) is an estimation-based optimization algorithm which is established based on the Kalman filtering framework. Even since the SKF algorithm is introduced in 2015, there is no tutorial been published on SKF. One may find that the equations and flowchart of the algorithm is not easy to understand. Hence, this paper provides a tutorial on SKF algorithm that emphasizes on a numerical example for easy and intuitive explanations. This tutorial would be important to those who work on the fundamentals and applications of SKF as well as to students who are new to optimization research.
Reduction in the Viability of Human Cervical Cancer HeLa Cell Line via Indirect Co-culture With Amniotic Fluid-Derived Mesenchymal Stem Cells
Authors: Rahmatizadeh Faramarz , Pashaei-Asl Fatima , Mohammadi Dehcheshmeh Manijeh , Rahbar Sara , LaleAtaei Maryam , Gholizadeh-Ghaleh Aziz Shiva , Soleimani Rad Jafar , Pashaiasl Maryam
Published: July 2020

Objectives: This experiment was carried out to evaluate the impacts of unmodified human amniotic fluid-derived mesenchymal stromal/stem cells (hAF-MSCs) on the viability of HeLa cells, as well as the impact of these cells on the expression of common proapoptotic and pro-survival genes in tumor cells by establishing an indirect co-culture system. Materials and Methods: To this end, an indirect co-culture system was established, and hAF-MSCs were co-cultured with HeLa cells at a ratio of 1:2 for five days. The cell viability of co-cultured tumor cells was determined after the incubation period. Then, several parameters were examined, including the gene expression of tumor protein 53 (TP53), BCL2-associated X protein (BAX), B-cell lymphoma 2 (BCL-2), and cyclin-dependent kinase inhibitor 1A (CDKN1A). Finally, gene regulatory networks were analyzed as well. Results: The results of this study confirmed that the co-culture of hAF-MSCs with HeLa cells could decrease the viability of tumor cells. The reduction of HeLa cell viability was accompanied by an increase in BAX, TP53, and CDKN1A while a decrease in BCL2 gene expression. Eventually, the analysis of the regulatory network revealed that the co-culture of Hela ¬cells with hAF-MSCs activated several transcriptional factors and microRNAs which regulated the expression of these genes. Conclusions: In general, hAF-MSCs exerted the inhibitive effects on the growth of HeLa cells, along with alterations in the expression of common pro-apoptotic and pro-survival genes in a timely and concentration-dependent manner.
Ist das Monopol mit vollständiger Preisdifferenzierung Pareto-optimal?
Authors: Lerch Achim
Published: July 2020

Bezüglich der Paretoptimalität des Monopols mit vollständiger Preisdifferenzerung bestehen nach wie vor Missverständnisse, die der vorliegende Beitrag auszuräumen versucht.
Peer-to-Peer-Ökonomie
Authors: Ritzer-Angerer Petra
Published: July 2020

Die Peer-to-Peer-Ökonomie ist die Vision einer Wirtschafts- und Gesellschaftsordnung, die den Kapitalismus zukünftig ablösen könnte. Peer-to-Peer-Netzwerke waren ursprünglich eine Innovation der Informatik. Innerhalb der letzten 20 Jahre hat sich aus ersten Programmierungen die Sharing Economy entwickelt. Diese stellt eine Zwischenstufe in der Entwicklung hin zu einer echten Peer-to-Peer-Ökonomie dar.
Organisationale Identität
Authors: Bramlage Jack K. , Scherm Ewald
Published: July 2020

Identität gibt Mitgliedern einer Organisation Orientierung und beeinflusst deren Handlungen. Um dies jedoch für die Organisation nutzbar zu machen, muss die Identität einer Organisation aktiv entwickelt werden. Dies ist aufgrund verschiedener Einflussfaktoren und Wechselwirkungen kein leichtes Unterfangen.
Controlling wissensbasierter Wertschöpfung - ein Ansatz mit ISO 30401
Authors: Breßler Julia , Pawlowsky Peter , Schnauffer Hans-Georg
Published: July 2020

Die intangible Ressource „Wissen“ und deren Management sind eine wichtige Wertquelle für Organisationen. Wissensmanagement – im Besonderen Wissenscontrolling – ist ein Mittel, um diesen potenziellen Wert zu erschließen. Im vorliegenden Beitrag werden unterschiedliche Ebenen des Controllings von wissensbezogener Wertschöpfung diskutiert und ein Rahmenwerk auf Basis der ISO 30401 skizziert.
Net Working Capital Optimierung mit Prescriptive Analytics bei der Robert Bosch GmbH
Authors: Reitzenstein Björn , Pinzger Alexander , Pottmeyer Thomas
Published: July 2020

Der Mehrwert von Analysetools sind Informationen, die in einem operativen Transformationsprozess von Daten generiert werden. Bei der täglichen Arbeit ermöglichen es diese Anwendungen, komplexe Zusammenhänge und Treiber auch ohne spezielle Programmier- oder Datenanalysekenntnisse zu verstehen. Mit True Financial Analytics im Speziellen werden so Optimierungspotenziale in allen Bereichen des Net Working Capital ermittelt.
Verbindung von ergebnis- und verhaltensorientiertem Controlling bei der Steuerung von Lieferanten
Authors: Eßig Michael , Glas Andreas H. , Henne Florian
Published: July 2020

Die Forschung zu organisationaler Kontrolltheorie unterscheidet traditionell zwischen ergebnis- und verhaltensorientierten Steuerungsansätzen. Während verhaltensorientierte Ansätze in ihrer notwendigen Detaillierung dann an ihre Grenzen stoßen, wenn die Komplexität in Vorhaben kaum mehr überschaubar wird, sind ergebnisorientierte Ansätze auf eine hohe Verlässlichkeit, Stichhaltigkeit und Präzision der Messgrößen angewiesen. Dieser scheinbare Gegensatz führte dazu, dass lange Zeit ein Ansatz dem anderen konfrontativ gegenübergestellt worden ist. Eine komplementäre Nutzung wird erst seit vergleichsweise kurzer Zeit diskutiert. Diese Lücke greift dieser Beitrag auf und stellt am Beispiel von ergebnisorientierten Anreiz-verträgen – sogenannten Performance-Based Contracts (PBC) – vor, wie die Kennzahlen der Verträge (ergebnisorientierter Ansatz) einem zusätzlichen Performance Measurement (verhaltensorientierter Ansatz) bedürfen.
Einsatz von Big Data und Predictive Analytics in der Unternehmensplanung - Ergebnisse einer Befragungsstudie
Authors: Bley Christopher , Giesel Alexander , Ruhwedel Franca
Published: July 2020

Der Einfluss von Business Intelligence (BI) auf die Unternehmensplanung nimmt zu. So führt die wachsende Bedeutung von Big Data dazu, dass die etablierte Unternehmensplanung immer häufiger durch Predictive Analytics ergänzt und teils ersetzt wird. Die Befragung von 49 Controllingleitern und CFOs zeigt, dass dem Thema großes Interesse entgegengebracht wird, jedoch erst wenige Unternehmen die Potenziale ausschöpfen.
Nutzengeführtes Target Costing für die additive Fertigung
Authors: Seidenschwarz Werner , Zaepernick Nikolai , Seidenschwarz Vanessa , Ruck Martin
Published: July 2020

Mit der additiven Fertigung steht eine neuartige Technologie zur Verfügung, der das Potenzial zugeschrieben wird, Entwicklungs- und Fertigungsvorgänge fundamental zu verändern. Mithilfe von repräsentativen Beispielen werden Nutzen- und Kostenaspekte in entsprechenden Target Costing-Anwendungen verdeutlicht. Das Spektrum reicht dabei von Klein- und Großserien bis hin zu verschiedenen Servicestufen, dargestellt mit dem Instrument der Servicetreppe.
Additive Manufacturing (AM) im Ersatzteilmanagement
Authors: Pfähler Kathrin , Morar Dominik , Kemper Hans-Georg
Published: July 2020

Ein vielversprechendes und innovatives Anwendungsgebiet der Technologie Additive Manufacturing (AM) stellt die AM-basierte Ersatzteilversorgung (AM-E) dar. Die Aufbereitung von AM-E-Erfahrungswissen ist für erfolgreiche Projekte unerlässlich. Das hier vorgestellte Konzept zur Entscheidungsunterstützung basiert auf AM-E-spezifischen Rahmenbedingungen zur Strukturierung und Nutzung von AM-E-Erfahrungswissen.
Controlling in der Produktentwicklung
Authors: Janka Marc
Published: July 2020

Gemeinhin gilt die Annahme, dass das Controlling für viele deutsche Unternehmen auch oder besonders in der Produktentwicklung von großer Bedeutung ist und vor allem unter Umfeldunsicherheit ein wesentlicher Erfolgsfaktor sein kann. Der vorliegende Beitrag zeigt unter Anwendung einer für die Controlling-Forschung neuartigen Methode zur Schätzung von Mischverteilungen mittels partieller Regressionen (englisch finite mixture partial least squares [FIMIX-PLS]), ob diese Annahme für alle Unternehmen gleichermaßen gilt.
Effektivitäts- und Effizienzbewertung des Produktionscontrollings
Authors: Sejdić Goran
Published: July 2020

Im Artikel wird eine Methode vorgestellt, mit der die Effektivität und Effizienz des Produktionscontrollings im Allgemeinen sowie die Auswirkung von Echtzeitdaten auf die Effektivität und Effizienz des Produktionscontrollings im Speziellen untersucht werden kann.
Stand und Entwicklung nichtfinanzieller Kennzahlen im Rahmen der Unternehmenssteuerung und ihre Rolle im Steuerungssystem der Vorstandsvergütung
Authors: Knauer Thorsten , Hermanns Martin , Schwering Anja , Winkelmann Sandra
Published: July 2020

Durch den Deutschen Rechnungslegungs Standard 20 und die sog. Corporate Social Responsibility-Richtlinie sind nichtfinanzielle Kennzahlen im Rahmen der Unternehmenssteuerung zunehmend in den Fokus gerückt. Trotz dieser regulatorischen Signale etabliert sich deren Nutzung in der Praxis nur langsam. Im vorliegenden Beitrag wird daher ein Überblick über die Bedeutung, die Hintergründe und den Stand der Implementierung nichtfinanzieller Kennzahlen in der Unternehmenssteuerung im Allgemeinen und insbesondere im Hinblick auf das Steuerungssystem der Vorstandsvergütung gegeben.
Verfahren zur Messung und Bewertung des Social Impacts
Authors: Kirsch Tim Lukas , Janka Marc , Einhorn Stefanie , Heinicke Xaver , Günther Thomas
Published: July 2020

Der Social Impact, d. h. die nachhaltige Wertschöpfung für alle Stakeholder einer Unternehmung, nimmt an Bedeutung zu. Der vorliegende Beitrag liefert einen Überblick über Verfahren, die zur Mes­sung und Bewertung von Social Impact in der Privatwirtschaft angewandt werden können. Anhand von fiktiven, aber realitätsnahen Beispielen werden die praktische Anwendbarkeit der einzelnen Ver­fahren aufgezeigt und Herausforderungen für die Unternehmen dargestellt.
BI-gestütztes Controlling-Cockpit für den Unternehmensbereich IT
Authors: Growe Alexander , Boehle Marco , Schön Dietmar
Published: July 2020

Aufgrund der sich verändernden Rolle der Unternehmens-IT hin zum Innovationstreiber kommt dem IT-Controlling eine zunehmend größere Bedeutung zu. Das hier vorgestellte Business-Intelligence-gestützte Controlling-Cockpit zeigt auf, wie durch eine auf die Anforderungen des Unternehmens abgestimmte Kennzahlenübersicht die Analyse und Steuerung des IT-Bereichs unterstützt werden kann.
Risikoorientiertes Kundenbeziehungsmanagement
Authors: Burgartz Thomas , Krämer Andreas
Published: July 2020

Das Management von Risiken ist Bestandteil der Führung eines Unternehmens. Auch im Kundenbeziehungsmanagement setzt sich immer mehr die Sichtweise durch, dass eine effiziente Steuerung eines Unternehmens auch ein strukturiertes Management der Risiken bedingt. Ein wirksames Risikomanagement trägt zur Vermeidung bestandsgefährdender Schäden bei und birgt das Potenzial, die optimale Ausrichtung des Unternehmens zu unterstützen und zur Senkung der Kapitalkosten beizutragen.
СОЦІАЛЬНО-ЕКОНОМІЧНІ І СОЦІАЛЬНО-ПОЛІТИЧНІ ЧИННИКИ ЗГУРТОВАНОСТІ ГРОМАД (НА ПРИКЛАДІ ЗАХІДНОГО ПРИКОРДОННЯ УКРАЇНИ)
Authors: Holovka Anatoliy
Published: July 2020

Наукова стаття присвячена дослідженню поняття згуртованості місцевих громад в умовах передачі значних повноважень від державних органів місцевим самоврядним одиницям. Метою публікації є виявлення соціально-економічних та соціально-політичних факторів згуртованості місцевих громад у прикордонних регіонах Західної України. Представлено класифікацію методів підвищення згуртованості громад шляхом, по-перше, створення рівних можливостей участі в процесі управління та вирішення місцевих проблем, по-друге, активізації економічного розвитку та посилення конкурентоспроможності громад та регіону на основі наявних конкурентних переваг. Виокремлено напрямки та засоби реалізації інклюзивної політики на місцях та визначення драйверів економічного зростання прикордонних (включно гірських) територій як чинників згуртування місцевих громад.
ESCALATION OF CRISIS IN POLITICAL SYSTEMS
Authors: Kostetska Lidiia
Published: July 2020

Transformational changes have been taking place in the political systems in many countries of the world over the last few decades. This issue arouses the great interest of scientists and researchers. In the article, I pay particular attention to the study of the “traditional” and “new” party systems and their role in the country’s contemporary political life. Given the challenge of the day, I see populism as a problem with its impact on democracy along with such issues as the role of populist parties and the citizens’ attitude to them; the analysis of problems developing in the political process, particularly, in parties and movements of the populist type; the formation and development of multi-party systems and democracy as a whole.Populism is considered in the article as a political ideology. This phenomenon is investigated as a component of the political parties’ activities, especially, of the Ukrainian parties. A comparative analysis of populist parties in the European Union and Ukraine has been carried out.I analyze the main factors of populism’s influence on the party-political system on the examples of the European countries and Ukraine. I also prove that populism has always occupied a special place in the implementation of programs of political leaders and parties. It is noted that populism remains the current day phenomenon of both the party-political system and the socio-economic life of the countries in the world. Having a considerable influence over the politics of the countries, where functioning of democratic institutions is relatively inexperienced, populism has a rather clear manifestation in the modern political space and the “old” democracies. There is a clear link between increasing populism and exacerbating socio-economic problems. The inability of the political establishment, including the democratic one, to respond effectively to new problems and challenges is an important factor contributing to the emergence and growth of populist influence.The in-depth analysis of the populist rhetorical and political effects on the development of modern democracy is particularly important, i. e. the margins between the reality and virtuality, truth and falsehood are leveling; facts lose their value; deconstruction of truth takes place; traditional ideologies are destroyed; moral relativism, hypocrisy and  double standards are spreading out.
Estado e economia no institucionalismo de Douglass North
Authors: FIANI RONALDO
Published: July 2020

RESUMO As ideias de Douglass North, apesar de seu prêmio Nobel de 1993, ainda são pouco conhecidas entre os economistas brasileiros. Esse desconhecimento é deplorável não apenas pela relevância de suas ideias para a teoria atual do desenvolvimento, mas também por sua nova (e bastante heterodoxa) contribuição para a análise do papel econômico do Estado moderno. Este artigo apresenta uma síntese da discussão de North sobre o papel institucional do Estado no sistema econômico. Mostra-se que, no pensamento de North, esse papel compreende não apenas a aplicação dos direitos de propriedade, mas, mais importante, a definição e atribuição desses direitos.
The elusive quest for the rule of law: promoting judicial reform in Latin America
Authors: SANTISO CARLOS
Published: July 2020

ABSTRACT While there exists a consensus on the centrality of the rule of law both for economic development and democratic consolidation, the political economy of legal and judicial reform remains largely under-theorized. The review essay underscores the tensions and trade-offs between the different strategies and objectives of judicial reform in Latin America. Contrasting the experiences of Argentina and Brazil, it high- lights the delicate balance between independence and accountability. It also assesses the role of donor institutions, and in particular the multilateral development banks, in promoting judicial reform. It argues for a more realistic approach to judicial governance, focusing on feasible reforms.
Progresso tecnológico, termos de troca e desenvolvimento desigual
Authors: OREIRO JOSÉ LUÍS
Published: July 2020

RESUMO Este artigo apresenta uma versão modificada do modelo de crescimento de dois setores de Dutt, com o objetivo de demonstrar a existência de uma relação inversa entre o declínio nos termos de troca e o desenvolvimento desigual entre o Norte e o Sul. Mostra-se que no caso em que o progresso tecnológico é reversível, no sentido de que as empresas do Norte podem reverter à adoção de tecnologias intensivas no uso de bens primários fabricados no Sul, essa reversão foi induzida pelo declínio dos termos de troca; esse declínio será seguido por uma redução, não por um aumento, no estoque de capital no Norte em relação ao estoque de capital no sul. Este resultado é uma generalização do modelo de Dutt, que considera uma situação em que o progresso tecnológico é irreversível.
Globalización y Crisis Financieras en América Latina
Authors: FRENKEL ROBERTO
Published: July 2020

RESUMO O artigo enfoca as crises financeira e monetária ocorridas no contexto da globalização financeira na América Latina. É apresentado em quatro seções. Uma visão sintética do processo de globalização financeira e o papel desempenhado pela AL é apresentado na primeira seção. A segunda seção apresenta um modelo que abrange as crises dos anos oitenta e noventa. A posição assumida pelo FMI é discutida. A terceira seção examina outros processos de globalização financeira nacional que não levaram a crises. As “medidas de prevenção de crises”, largamente baseadas nessas experiências, são então comentadas. Por fim, a quarta seção discute os caminhos nacionais que levam à “integração financeira segmentada” e apresenta algumas reflexões sobre problemas de coordenação internacional.
Renda Básica: A resposta está sendo soprada pelo vento
Authors: SUPLICY EDUARDO MATARAZZO
Published: July 2020

RESUMO Em palestra sobre o desenvolvimento da ideia de uma Renda Básica Incondicional proferida no dia 17 de agosto de 2002, na Universidade de São Paulo, o professor Phillipe Van Parijs afirmou que a introdução de um programa como esse, em países continentais como o Brasil, deve ser feita de forma gradual.