bluuebunny/crossref_metadata_2025 huggingface dataset:
The Impact of Rain Exposure During Loading of Wood Pellets for Ocean Shipment: An Experimental Study
Authors: Lee Jun Sian , Sokhansanj Shahab , Lau Anthony K. , Lim Jim
Published: January 2021

Highlights

A cut-off curve was delineated that specifies the rainfall conditions at which loading of wood pellets must be stopped.

The relationship between the amount of water sprayed and the pellet durability and fines content was quantified.

Very light rainfall events (less than 0.5 mm h-1) had little impact on the durability of wood pellets.

Abstract. On the west coast of Canada, port terminals are frequently exposed to seasonal rainfall events, which can impact the loading operations at the terminals. Wood pellets, one of the bulk materials frequently handled in Canadian ports, are known to disintegrate when exposed to water. However, the extent to which the exposed pellets degrade, in terms of their durability and fines content, is not quantified in the literature. This exploratory research quantifies the impact of liquid water on wood pellets and delineates a cut-off curve specifying the rainfall conditions at which the loading of wood pellets needs to be halted. For example, loading may continue for at least 30 min at rainfall intensities of less than 0.5 mm h-1 before the durability of the wood pellets drops from 99.5% to 96.5%. The results also showed that the durability and fines content of wetted pellets have a strong correlation with the amount of water that the wood pellets are exposed to. Keywords: Durability, Fines, Loading, Moisture content, Rain, Wood pellets.
Process Development for Antioxidant Extraction from Wet Pomegranate Peel
Authors: Wu Xingzhu , Venkitasamy Chandrasekar , McHugh Tara , Pan Zhongli
Published: January 2021

Highlights

A novel process for antioxidant extraction from wet pomegranate peel (WPP) was developed using water as solvent.

Effects of extraction parameters on extract yield, quality, composition, and color were quantified.

Extraction from WPP achieved 10% higher extract yield compared with dried peel.

The WPP extraction process is more energy-efficient than extraction from dried peel.

Abstract. Pomegranate peel (PP) is underused as animal feed or discarded in landfills, causing environmental pollution, even though it has a unique polyphenol profile with health-promoting properties. Past research has focused on the potential utilization of dried pomegranate peel (DPP), involving extended processing time, energy usage, and potential quality loss. The objective of this study was to develop a process to extract water-soluble antioxidants from wet pomegranate peel (WPP) and compare its antioxidant attributes with that of DPP. The WPP was sliced and ground into two sizes, and phenolics were extracted in water at different temperatures (20°C, 30°C, 40°C, 50°C, and 60°C), solvent (water) ratios (1:1, 2:1, 4:1, 6:1, and 8:1), and extraction times (2, 3, 4, 5, and 6 min). WPP extraction was compared with DPP extraction using hot air (HA, 40°C) and infrared radiation (IR, 60°C). The total phenolic yield (TPY) from WPP ranged from 10.37% to 12.80%, and the extraction rate increased significantly with increasing extraction time, temperature, and solvent ratio. DPPH scavenging activity (DSA), an important indicator of antioxidant activity, was in the range of 5.366 to 6.591 g g-1 and decreased only with the increase in temperature. Extraction using WPP particles resulted in 10% more extract yield and 2.5% more TPY compared to DPP powders with similar DSA. This study demonstrated that WPP could be used for the extraction of phenolic compounds with high antioxidant activity and without energy-intensive drying. Keywords: . Infrared drying, Peel composition, Polyphenol, Principal component analysis, Wet pomegranate peel.
Effect of Yb3+ concentration on upconversion luminescence and optical thermometry sensitivity of La2MoO6: Yb3+, Er3+ phosphors
Authors: Miao Juhong , Chen Mingyuan , Chen Zichen , Zhang Lei , Wei Song , Yang Xinye
Published: January 2021

L

a

2

M
o

O

6

:

Y

b

3
+

,

E

r

3
+

upconversion (UC) micro-crystals with a tetragonal structure were fabricated through a modified sol–gel method. The samples are found to be spherical in shape with a diameter of about 300 nm. Upon excitation of 980 nm light, the UC emission spectra of the phosphors exhibit green and red bands corresponding to the characteristic transitions of

E

r

3
+

ions. As

Y

b

3
+

concentration rises, the green emission intensity increases and reaches the maximum at 2.0%

Y

b

3
+

content, while the ratio of green/red emission intensities (

I
G

/

I
R

) declines monotonically. Temperature sensing capability was studied employing the fluorescent intensity ratio technique from the thermally coupled levels

2

H

11

/

2

and

4

S

3

/

2

of

E

r

3
+

in temperature range of 293

∼

533 K. It is interesting to find that

Y

b

3
+

concentration has influence on the absolute sensitivity

S
A

, while the relative sensitivity

S
R

is almost independent of

Y

b

3
+

content. Furthermore, excellent thermal stability and high temperature sensitivity is also demonstrated in the 2.0%

Y

b

3
+

-doped sample with the obtained maximum

S
A

and

S
R

as high as

0.008

K

−
1

and

1.093

%

K

−
1

, respectively. The experimental results indicate that

Y

b

3
+

/

E

r

3
+

co-doped

L

a

2

M
o

O

6

phosphors can be excellent candidates for temperature sensing applications.
Compact and low-cost superfluorescent fiber source assisted narrow linewidth Yb-Raman fiber amplifier
Authors: Song Jiaxin , Lai Wenchang , Ma Pengfei , Xiao Hu , Liu Wei , Zhou Pu
Published: January 2021

Recent work has shown that temporally stable optical sources are
required in a narrow linewidth Yb-Raman fiber amplifier to suppress
the spectral broadening phenomenon. Superfluorescent fiber sources
(SFSs) with different spectral widths are used as the Raman-pumped
lasers in a 200-watt level narrow linewidth Yb-Raman fiber amplifier
for the first time to the best of our knowledge. The experimental
results reveal that the spectral broadening phenomenon could be well
controlled by using the broadband SFS. Therefore, the narrow linewidth
operation could be well maintained during the power scaling process.
Moreover, the suppression of the spectral broadening phenomenon would
deteriorate when the spectral width of the SFS decreases. This work
could provide a compact, low-cost choice for the Raman-pumped laser in
narrow linewidth Yb-Raman fiber amplifiers.
High-accuracy and rapid azimuth calibration for polarizing elements in ellipsometry by differential spectral analysis on the ellipse azimuth
Authors: Tu Huatian , Zheng Yuxiang , Shan Yao , Chen Yao , Zhang Haotian , Zhang Rongjun , Wang Songyou , Lee YoungPak , Chen Liangyao
Published: January 2021

We propose an accurate and rapid azimuth calibration method for polarizing elements in ellipsometry. Over 200 calibrations were achieved simultaneously at different wavelength points in a spectral range of 550–650 nm without any calibrated element. The azimuth of the polarizer was determined from the differential spectral analysis on the ellipse azimuth of reflected light. The information of the ellipse azimuth is experimentally acquired in the spectral range by a rotating polarizing element and a spectrometer. The presented method was performed and verified with Si and Au bulk, respectively, showing reliability and feasibility for efficient and reliable calibration in ellipsometry.
100  kHz krypton-based flow tagging velocimetry in a high-speed
flow
Authors: Grib Stephen W. , Jiang Naibo , Hsu Paul S. , Stauffer Hans U. , Felver Josef J. , Roy Sukesh , Schumaker S. Alexander
Published: January 2021

Krypton (Kr)-based tagging velocimetry is demonstrated in a

K
r

/

N

2

jet at 100 kHz repetition rate using
a custom-built burst-mode laser and optical parametric oscillator
(OPO) system. At this repetition rate, the wavelength-tunable, narrow
linewidth laser platform can generate up to 7 mJ/pulse at resonant Kr
two-photon-excitation wavelengths. Following a comprehensive study, we
have identified the 212.56 nm two-photon-excitation transition as
ideal for efficient Kr-based velocimetry, producing a long-lived (

∼

40

µ

s

) fluorescence signal from
single-laser-pulse tagging that is readily amenable to velocity
tracking without the need for a second “read” laser pulse. This
long-lived fluorescence signal is found to emanate from

N

2

—rather than from Kr—following
efficient energy transfer. Successful flow velocity tracking is
demonstrated at multiple locations in a high-speed

K
r

/

N

2

jet flow. The 100 kHz repetition rate
provides the ability to perform time-resolved velocimetry measurements
in high-speed and even hypersonic flow environments, where standard
velocimetry approaches are insufficient to capture the relevant
dynamics.
Holographic tomography: techniques and biomedical applications [Invited]
Authors: Balasubramani Vinoth , Kuś Arkadiusz , Tu Han-Yen , Cheng Chau-Jern , Baczewska Maria , Krauze Wojciech , Kujawińska Małgorzata
Published: January 2021

Holographic tomography (HT) is an advanced label-free optical
microscopic imaging method used for biological studies. HT uses
digital holographic microscopy to record the complex amplitudes of a
biological sample as digital holograms and then numerically
reconstruct the sample’s refractive index (RI) distribution in three
dimensions. The RI values are a key parameter for label-free
bio-examination, which correlate with metabolic activities and
spatiotemporal distribution of biophysical parameters of cells and
their internal organelles, tissues, and small-scale biological
objects. This article provides insight on this rapidly growing HT
field of research and its applications in biology. We present a review
summary of the HT principle and highlight recent technical advancement
in HT and its applications.
Complexity-guided Fourier phase retrieval from noisy data
Authors: Butola Mansi , Rajora Sunaina , Khare Kedar
Published: January 2021

Reconstruction of a stable and good quality solution from noisy single-shot Fourier intensity data is a challenging problem for phase retrieval algorithms. We examine behavior of the solution provided by the hybrid input–output (HIO) algorithm for noisy data, from the perspective of the complexity guidance methodology that was introduced by us in an earlier paper [J. Opt. Soc. Am. A 36, 202 (2019)JOAOD60740-323210.1364/JOSAA.36.000202]. We find that for noisy data, the complexity of the solution outside the support keeps increasing as the HIO iterations progress. Based on this observation, a strategy for controlling the solution complexity within and outside the support during the HIO iterations is proposed and tested. In particular, we actively track and control the growth of complexity of the solution outside the support region with iterations. This in turn provides us with guidance regarding the level to which the complexity of the solution within the support region needs to be adjusted, such that the total solution complexity is equal to that estimated from raw Fourier intensity data. In our studies, Poisson noise with mean photon counts per pixel in the Fourier intensity data ranges over four orders of magnitude. We observe that the performance of the proposed strategy is noise robust in the sense that with increasing noise, the quality of the phase solution degrades gradually. For higher noise levels, the solution loses textural details while retaining the main object features. Our numerical experiments show that the proposed strategy can uniformly handle pure phase objects, mixed amplitude-phase objects, and the case of dc blocked Fourier intensity data. The results may find a number of applications where single-shot Fourier phase retrieval is critical to the success of corresponding applications.
Cascaded optical resonator-based programmable photonic integrated circuits
Authors: Park Taewon , Jeong Youngjae , Yu Kyoungsik
Published: January 2021

Programmable photonic integrated circuits have mainly been developed based on the single wavelength channel operation of fundamental building blocks consisting of Mach-Zehnder interferometers (MZIs) with tunable phase shifters. We propose and study optical circuit models consisting of cascaded optical resonators that enable the independent operation of multiple wavelength channels in a more compact footprint than the conventional MZIs. By adopting experimental values reported for silicon micro-ring resonators, the fidelities of different types of 2×2 unitary transformations and higher-dimensional unitary transformations are examined by employing the Reck algorithm and the Clements algorithm.
Inter-half-cycle spectral interference in high-order harmonic generation from monolayer MoS2
Authors: Cao Jiayuan , Li Fangshu , Bai Ya , Liu Peng , Li Ruxin
Published: January 2021

The enhancement of even-order harmonics near the cut-off of high-order harmonic spectra from monolayer MoS2 has been experimentally observed recently by several groups. Here we demonstrate that this enhancement can be interpreted as a result of spectral interference between half-cycles with opposite polarity by adopting a fully quantum mechanical calculation. We found that, due to the energy modulation induced by Berry connections, only half-cycles with the same polarity can generate high-order harmonics near the cut-off frequency, thus the lack of destructive interference leads to the enhanced intensity of the corresponding even-order harmonics. The explanation is supported by the frequency shift of the measured harmonic peaks. Our finding revealed the role of inter-half-cycle interference in high-harmonic generation (HHG) from non-centrosymmetric materials.
Fully integrated 45-GHz harmonically mode-locked ring laser with an intra-cavity Mach–Zehnder filter
Authors: Nielsen Lars , Heck Martijn J. R.
Published: January 2021

Wavelength division multiplexing (WDM) systems can utilize the full capacity of a single optical fiber and thereby keep up with the increasing demand for higher bandwidths within datacenters. A single mode-locked laser diode emits a comb of wavelengths and can thus, in principle, be used to generate all the channels of a WDM system. However, achieving a large channel spacing of much more than 20–30 GHz can be troublesome, since this depends directly on making the cavity smaller. To circumvent this, harmonic mode-locking can be utilized, as this increases the channel spacing while keeping the cavity size fixed. In this work, we show that a monolithically integrated 45-GHz harmonically mode-locked ring laser based on an intra-cavity Mach–Zehnder filter is feasible on a generic integration platform. True harmonic mode-locking was achieved with no measurable RF peak at the fundamental frequency. The pulse train exhibits an autocorrelation trace width of

∼

2.5

p
s

FWHM, RF linewidth of

∼

0.44

M
H
z

, and 3-dB comb bandwidth of

∼

240

G
H
z

.
Effects of larval rearing substrates on some life-table parameters of Lutzomyia longipalpis sand flies
Authors: Aguiar Martins Kelsilandia , Meirelles Maria Helena de Athayde , Mota Tiago Feitosa , Abbasi Ibrahim , de Queiroz Artur Trancoso Lopo , Brodskyn Claudia Ida , Veras Patrícia Sampaio Tavares , Mothé Fraga Deborah Bittencourt , Warburg Alon
Published: January 2021

Sand flies are the insects responsible for transmitting Leishmania parasites, the causative agents of leishmaniasis in humans. However, the effects of sand fly breeding sites on their biology and ecology remain poorly understood. Herein, we studied how larval nutrition associated with putative breeding sites of the sand fly Lutzomyia longipalpis affects their oviposition, development, microbiome, and susceptibility to Leishmania by rearing L. longipalpis on substrates collected from an endemic area for leishmaniasis in Brazil. The results showed that female L. longipalpis select the oviposition site based on its potential to promote larval maturation and while composting cashew leaf litter hindered the development, larvae reared on chicken feces developed rapidly. Typical gut microbial profiles were found in larvae reared upon cashew leaf litter. Adult females from larvae reared on substrate collected in chicken coops were infected with Leishmania infantum, indicating that they were highly susceptible to the parasite. In conclusion, the larval breeding sites can exert an important role in the epidemiology of leishmaniasis.
Molecular evidence of the hybrid origin of Cryptocoryne ×purpurea Ridl. nothovar. purpurea (Araceae)
Authors: Rosazlina Rusly , Jacobsen Niels , Ørgaard Marian , Othman Ahmad Sofiman
Published: January 2021

Natural hybridization has been considered a source of taxonomic complexity in Cryptocoryne. A combined study of DNA sequencing data from the internal transcribed spacer (ITS) of nuclear ribosomal DNA and the trnK-matK region of chloroplast DNA was used to identify the parents of Cryptocoryne putative hybrids from Peninsular Malaysia. Based on the intermediate morphology and sympatric distribution area, the plants were tentatively identified as the hybrid Cryptocoryne ×purpurea nothovar. purpurea. The plants were pollen sterile and had long been considered as hybrids, supposedly between two related and co-existing species, C. cordata var. cordata and C. griffithii. The status of C. ×purpurea nothovar. purpurea was independently confirmed by the presence of an additive ITS sequence pattern from these two parental species in hybrid individuals. An analysis of the chloroplast trnK-matK sequences showed that the hybridization is bidirectional with the putative hybrids sharing identical sequences from C. cordata var. cordata and C. griffithii, indicating that both putative parental species had been the maternal parent in different accessions.
Quality of top webpages providing abortion pill information for Google searches in the USA: An evidence-based webpage quality assessment
Authors: Pleasants Elizabeth , Guendelman Sylvia , Weidert Karen , Prata Ndola
Published: January 2021

Background

In the United States, the internet is widely used to seek health information. Despite an estimated 18 million Google searches on abortion per year and the demonstrated importance of the abortion pill as an option for pregnancy termination, the top webpage search results for abortion pill searches, as well as the content and quality of those webpages, are not well understood.

Methods

We used Google’s Custom Search Application Programming Interface (API) to identify the top 10 webpages presented for “abortion pill” searches on August 06, 2018. We developed a comprehensive, evidence-based Family Planning Webpage Quality Assessment Tool (FPWQAT), which was used to assess webpage quality for the five top webpages presenting text-based educational content.

Results

Of the top webpages for “abortion pill” searches, a plannedparenthood.com page was the top result and scored highest on our assessment (81%), providing high-quality and useable information. The other four webpages, a Wikipedia.com page and three anti-abortion information webpages, scored much lower on our assessment (14%-43%). These four webpages had lower quality of information in less useable formats. The anti-abortion pages also presented a variety of disinformation about the abortion pill.

Conclusions

Both the lack of accurate clinical content on the majority of top webpages and the concerning disinformation they contained raise concerns about the quality of online abortion pill information, while underlining challenges posed by Google search results to informed choice for consumers. Healthcare providers and consumers must be informed of online abortion pill content that is not based in current clinical evidence, while advocates and policymakers should push for online information that is credible and useable. These changes are imperative given the importance of sound abortion pill information for reproductive decision-making at a time when in-person abortion services are further challenged in the US.
Comparison of parasite load by qPCR and histopathological changes of inner and outer edge of ulcerated cutaneous lesions of cutaneous leishmaniasis
Authors: Thomaz Caio , de Mello Cintia Xavier , Espíndola Otávio de Melo , Shubach Armando de Oliveira , Quintella Leonardo Pereira , de Oliveira Raquel Vasconcelos Carvalhaes , Duarte Adriane Corrêa Gomes , Pimentel Maria Inês Fernandes , Lyra Marcelo Rosandiski , Marzochi Mauro Celio de Almeida
Published: January 2021

Background

Cutaneous leishmaniasis (CL) is an infectious vector-borne disease caused by protozoa of the Leishmania genus that affects humans and animals. The distribution of parasites in the lesion is not uniform, and there are divergences in the literature about the choice of the better sampling site for diagnosis–inner or outer edge of the ulcerated skin lesion. In this context, determining the region of the lesion with the highest parasite density and, consequently, the appropriate site for collecting samples can define the success of the laboratory diagnosis. Hence, this study aims to comparatively evaluate the parasite load by qPCR, quantification of amastigotes forms in the direct exam, and the histopathological profile on the inner and outer edges of ulcerated CL lesions.

Methods

Samples from ulcerated skin lesions from 39 patients with confirmed CL were examined. We performed scraping of the ulcer inner edge (base) and outer edge (raised border) and lesion biopsy for imprint and histopathological examination. Slides smears were stained by Giemsa and observed in optical microscopy, the material contained on the smears was used to determine parasite load by quantitative real-time PCR (qPCR) with primers directed to the Leishmania (Viannia) minicircle kinetoplast DNA. The histopathological exam was performed to evaluate cell profile, tissue alterations and semi-quantitative assessment of amastigote forms in inner and outer edges.

Principal findings

Parasite loads were higher on the inner edge compared to the outer edge of the lesions, either by qPCR technique (P<0.001) and histopathological examination (P< 0.003). There was no significant difference in the parasite load between the imprint and scraping on the outer edge (P = 1.0000).

Conclusion/Significance

The results suggest that clinical specimens from the inner edge of the ulcerated CL lesions are the most suitable for both molecular diagnosis and direct parasitological examination.
Identifying causative mechanisms linking early-life stress to psycho-cardio-metabolic multi-morbidity: The EarlyCause project
Authors: Mariani Nicole , Borsini Alessandra , Cecil Charlotte A. M. , Felix Janine F. , Sebert Sylvain , Cattaneo Annamaria , Walton Esther , Milaneschi Yuri , Cochrane Guy , Amid Clara , Rajan Jeena , Giacobbe Juliette , Sanz Yolanda , Agustí Ana , Sorg Tania , Herault Yann , Miettunen Jouko , Parmar Priyanka , Cattane Nadia , Jaddoe Vincent , Lötjönen Jyrki , Buisan Carme , González Ballester Miguel A. , Piella Gemma , Gelpi Josep L. , Lamers Femke , Penninx Brenda W. J. H. , Tiemeier Henning , von Tottleben Malte , Thiel Rainer , Heil Katharina F. , Järvelin Marjo-Riitta , Pariante Carmine , Mansuy Isabelle M. , Lekadir Karim
Published: January 2021

Introduction

Depression, cardiovascular diseases and diabetes are among the major non-communicable diseases, leading to significant disability and mortality worldwide. These diseases may share environmental and genetic determinants associated with multimorbid patterns. Stressful early-life events are among the primary factors associated with the development of mental and physical diseases. However, possible causative mechanisms linking early life stress (ELS) with psycho-cardio-metabolic (PCM) multi-morbidity are not well understood. This prevents a full understanding of causal pathways towards the shared risk of these diseases and the development of coordinated preventive and therapeutic interventions.

Methods and analysis

This paper describes the study protocol for EarlyCause, a large-scale and inter-disciplinary research project funded by the European Union’s Horizon 2020 research and innovation programme. The project takes advantage of human longitudinal birth cohort data, animal studies and cellular models to test the hypothesis of shared mechanisms and molecular pathways by which ELS shapes an individual’s physical and mental health in adulthood. The study will research in detail how ELS converts into biological signals embedded simultaneously or sequentially in the brain, the cardiovascular and metabolic systems. The research will mainly focus on four biological processes including possible alterations of the epigenome, neuroendocrine system, inflammatome, and the gut microbiome. Life-course models will integrate the role of modifying factors as sex, socioeconomics, and lifestyle with the goal to better identify groups at risk as well as inform promising strategies to reverse the possible mechanisms and/or reduce the impact of ELS on multi-morbidity development in high-risk individuals. These strategies will help better manage the impact of multi-morbidity on human health and the associated risk.
Bacterial nucleomodulins: A coevolutionary adaptation to the eukaryotic command center
Authors: Hanford Hannah E. , Von Dwingelo Juanita , Abu Kwaik Yousef
Published: January 2021

Through long-term interactions with their hosts, bacterial pathogens have evolved unique arsenals of effector proteins that interact with specific host targets and reprogram the host cell into a permissive niche for pathogen proliferation. The targeting of effector proteins into the host cell nucleus for modulation of nuclear processes is an emerging theme among bacterial pathogens. These unique pathogen effector proteins have been termed in recent years as “nucleomodulins.” The first nucleomodulins were discovered in the phytopathogensAgrobacteriumandXanthomonas, where their nucleomodulins functioned as eukaryotic transcription factors or integrated themselves into host cell DNA to promote tumor induction, respectively. Numerous nucleomodulins were recently identified in mammalian pathogens. Bacterial nucleomodulins are an emerging family of pathogen effector proteins that evolved to target specific components of the host cell command center through various mechanisms. These mechanisms include: chromatin dynamics, histone modification, DNA methylation, RNA splicing, DNA replication, cell cycle, and cell signaling pathways. Nucleomodulins may induce short- or long-term epigenetic modifications of the host cell. In this extensive review, we discuss the current knowledge of nucleomodulins from plant and mammalian pathogens. While many nucleomodulins are already identified, continued research is instrumental in understanding their mechanisms of action and the role they play during the progression of pathogenesis. The continued study of nucleomodulins will enhance our knowledge of their effects on nuclear chromatin dynamics, protein homeostasis, transcriptional landscapes, and the overall host cell epigenome.
O Discurso Inaugural do Real Colégio dos Nobres (1766)
Authors: Martins Ana Isabel Correia , Scatolin Adriano
Published: January 2021

O italiano Miguel António Ciera profere a 14 de Abril de 1766 o Discurso Inaugural do Real Colégio dos Nobres, instituição im-pulsionada pelo Ministro Sebastião Carvalho e Mello, sob o patronato régio de D. José I. O Discurso, escrito em latim e estruturado em doze capítulos, apresenta reflexões em prol das Letras e das Humanidades, discorre sobre questões de Fi-losofia Política, num equilíbrio sensato entre críticas e elogios a uma classe privilegiada que se almeja que seja cada vez mais versada nos diversos assuntos de Estado. Este panegírico incide sobretudo na imprescindibilidade de uma formação in-tegral, como se de uma segunda natureza se tratasse, fortale-cida nos princípios da ética e da moral para que os jovens no-bres pudessem desempenhar de forma activa e competente os papéis para os quais estariam destinados. A eloquência do orador, a estrutura argumentativa da prelecção, tão ao estilo ciceroniano, comprovam que tanto ao nível da res como dos verba este discurso é de assinalável relevância para o estado de arte e para o estudo da História pedagogia no século XVIII, em Portugal.
Volver (se) escritura (en) el viaje: Notas sobre latinoamericanas en tránsito (Francisca Espínola y la condesa de Merlín)
Authors: Calomarde Nancy Azucena
Published: January 2021

En este trabajo me interesa interrogar dos relatos disímiles, realizados por mujeres que proyectan lugares de enunciación antitéticos: uno, el regreso de una letrada desde una metrópoli europea a un enclave colonial americano, el de Mercedes de Santa Cruz y Montalvo y, otro, el que realiza una viajera (no-escritora), Francisca Espínola, entre dos periferias geoculturales desde la provincia de Buenos Aires a la comuna francesa de Sète. De ambos recorridos se derivan diferencias sustantivas en la escritura de los textos Viaje a La Habana y Memoria de un viaje a Francia de una argentina de la provincia de Buenos Aires. La narración de este último –entre Buenos Aires, Sète y Marsella– reviste particular interés para mi artículo ya que se trata de un texto casi desconocido y de iniciación literaria (acaso ocasional) que expone diversos dispositivos y tretas de construcción del lugar de «la mujer que escribe» y que busca su diferenciación. En mi hipótesis, estos textos exhiben un modo peculiar de escritura donde la distancia territorial opera como un catalizador de los vínculos entre nación, letra y género.
Parodia y política en El Conspirador. Autobiografía de un hombre público (1892) de Mercedes Cabello de Carbonera
Authors: Cárdenas Mónica
Published: January 2021

La escritora peruana Mercedes Cabello de Carbonera (1842- 1909), como parte de su proyecto de novela moderna, publicó seis novelas en las que representó la sociedad limeña anterior a la Guerra del Pacífico (1879- 1883). La última de ellas se titula El Conspirador. Autobiografía de un hombre público. Novela político-social (1892) y es también la que mejor problematiza, a través de la parodia, el proyecto ético-estético de su autora. En este artículo, analizamos tres aspectos: el travestismo de los personajes, la carnavalización de la ciudad letrada y la reflexión metaliteraria a través del género autobiográfico. Creemos que a través de ellos se configura una estilización paródica (Bajtin, Hutcheon, Tran-Gervat) de distintos géneros vigentes en la segunda mitad del siglo XIX (novela política, novela picaresca, relato de costumbres, novela sentimental) que le permite a la autora, por un lado, reescribir y subvertir su propia intencionalidad realista reflejada en la denominación “político-social”, y por el otro, reflexionar acerca del valor de la novela como instrumento civilizatorio.
Jesús Cano Reyes (ed.). Bobby Deglané. Crónicas de la guerra civil española. Sevilla: Renacimiento (Espuela de Plata), 2019.
Authors: López Sánchez Raquel
Published: January 2021

Reseña de la referencia bibliográfica Jesús CANO REYES (ed.). Bobby Deglané. Crónicas de la guerra civil española. Sevilla: Renacimiento (Espuela de Plata), 2019. ISBN: 9788417146863
Rosalba Campra. Los dobleces de la realidad. Exploraciones narrativas. León: Editorial EOLAS, 2019.
Authors: Eudave Cecilia
Published: January 2021

Reseña de Cecilia Eudave (Universidad de Guadalajara, México): Rosalba Campra. Los dobleces de la realidad. Exploraciones narrativas. León: Editorial EOLAS, 2019. ISBN: 978-84-17315-95-5.
Volumes by tree species can be predicted using photogrammetric UAS data, Sentinel-2 images and prior field measurements
Authors: Kukkonen Mikko , Kotivuori Eetu , Maltamo Matti , Korhonen Lauri , Packalen Petteri
Published: January 2021

Photogrammetric point clouds obtained with unmanned aircraft systems (UAS) have emerged as an alternative source of remotely sensed data for small area forest management inventories (FMI). Nonetheless, it is often overlooked that small area FMI require considerable field data in addition to UAS data, to support the modelling of forest attributes. In this study, we propose a method whereby tree volumes by species are predicted with photogrammetric UAS data and Sentinel-2 images, using models fitted with airborne laser scanning data. The study area is in a managed boreal forest area in Eastern Finland. First, we predicted total volume with UAS point cloud metrics using a prior regression model fitted in another area with ALS data. Tree species proportions were then predicted by nearest neighbor (-NN) imputation based on bi-seasonal Sentinel-2 images without measuring new field plot data. Species-specific volumes were then obtained by multiplying the total volume by species proportions. The relative root mean square error (RMSE) values for total and species-specific volume predictions at the validation plot level (30 m Ã 30 m) were 9.0%, and 33.4â62.6%, respectively. Our approach appears promising for species-specific small area FMI in Finland and in comparable forest conditions in which suitable field plots are available.kk
A családi fészekben élő fiatal felnőttek és fogyasztói döntéseik (In the family nest living young adults and their consumer decisions)
Authors: Neulinger Ágnes , Zsótér Boglárka
Published: January 2021

Fiatal felnőttek nagyarányú jelenléte a szülői háztartásokban nemcsak Magyarországon és Európában jellemző, de a fejlett ipari országokban általánosan megfigyelhető jelenség. Az Európai Unióban élő 18–34 év közötti fiatalok 46%-a él együtt legalább egyik szülőjével, a magyar fiatalok esetében hasonló az arány. A fiatalok kitolódó felnőtté válása azt is jelenti, hogy a szülők egyre későbbi időponttól kezdve rendelkeznek szabadabban idejükkel és anyagi forrásaikkal, a fiatal felnőttek döntései pedig részben szüleik részvételével történik. Jelen cikk arra keresi a választ, hogy a szülői fészekben élő vagy a szüleiktől részben függő fiatalok milyen döntési mintákkal rendelkeznek, illetve vásárlási döntéseikben mennyire önállóak. A kérdés vizsgálatát a szülői háztól függő egyetemista fiatalok körében végzett kérdőíves megkérdezés segítségével a szerzők elemezték, és arra is lehetőségük volt, hogy a családtagok által írt rövid esszék segítségével a kérdést több oldalról vizsgálják meg. Eredményeik szerint a szülői háztól függő fiatal felnőttek önálló döntésre képes, sok esetben szakértő fogyasztók, döntéseik önállóságát azonban a termékkategória, a családdal való kapcsolattartás gyakorisága, a családforma és a nemi szerepek is befolyásolják. ____ High ratio of adult children is still living in their parents’ home. This is a significant phenomenon that can be observed in Hungary and throughout Europe, while influences living trends globally. In the EU, 46% of youth between 18-34 years live with at least one of their parents and this same statistic holds true in the case of Hungary. This postponement of adulthood allows parents to enjoy more free time and have higher disposable income from later in life. The young adults, however, in the household make their consumer decisions under parental control. The purpose of this study is to explore the decisionmaking styles of young adults and their independence from their parents in shopping-related decision-making through a literature review and primary study. The survey focused on university students who are dependent on their parental home and short essays were also collected from family members of the target group in order to gain a more complex view on this phenomenon. According to the results the following conclusion can be made: young adults living in their parents’ home are competent consumers with individual decisions, in addition, they are consumer experts within the family in many cases. However, their independent shopping-related decision-making is influenced by product category, frequency of connection to the family home, family form and also sex role orientations.
ERP-rendszerek a számítási felhőben (cloud computing) - A felhőtechnikával összefüggő új ERP-kiválasztási kritériumok elemzése (ERP systems within cloud – Criteria for selection of ERP systems in a cloud environment)
Authors: Szabó Gyula , Benczúr András , Molnár Bálint
Published: January 2021

Néhány éve vonult be a köztudatba a cloud computing fogalom, mely ma már a szakirodalomban és az informatikai alkalmazásokban is egyre nagyobb teret foglal el. Ez az új IT-technológia a számítási felhő számítástechnikai szolgáltatásaihoz kapcsolódó ERP-rendszerek szabványosítását, elterjedését eredményezi. A szerzők cikkükben áttekintést adnak a cloud computing mai helyzetéről és a számítási felhőben működő adatfeldolgozó rendszerekkel (kiemelten ERP) kapcsolatos felhasználói elvárásokról, illetve kezdeti, németországi alkalmazási tapasztalatokról. Külön tárgyalják az ERP-rendszerek új kiválasztási céljait és kritériumait, melyek a felhőkörnyezet speciális lehetőségei miatt alakultak ki. _____ The concept of ‘Cloud’ as an IT notion emerged in the past years and proliferated within the business and IT professional community. The concept of cloud gained awareness both in the professional and scientific literature and in the practice of IT/IS world. The cloud has a profound impact on the Business Information Systems, especially on ERP systems. Indirectly, the cloud leads to a massive standardization on ERP systems and their services. In this paper, the authors provide a literature overview about the current situation of Cloud Computing and the requirements established by end-users against the other data processing facilities and systems, outstandingly the ERP systems. The majority of investigated cases are based on samples from Germany. Furthermore, the initial experiences of application are discussed. Separately, the recent selection objectives and criteria for ERP systems are investigated that came into existence because the appearance of Cloud in the IT environment.
Heimat als kritisches kulturpolitisches Programm
Authors: Anders Kenneth , Fischer Lars
Published: January 2021

Während eine unfruchtbare ideologiekritische Debatte möglichen Kontaminierungen im Heimatbegriff nachspürt, schlagen die Autoren vor, die Auseinandersetzung mit dem eigenen Raum in einer Programmatik der regionalen Selbstbeschreibung zu führen. Die dafür geeigneten Arbeitsweisen der Landschaftskommunikation sind offen und nicht auf eine politische Zuordnung angewiesen - denn regionale Beschreibungen ermöglichen kollektive Wissensprodukton.
Wenn wir gemeinsam Verantwortung übernehmen, schaffen wir Heimat für alle!
Authors: Scurrell Babette , Stauß Claudia
Published: January 2021

Babette Scurrell und Claudia Stauß widmen sich in ihrem Beitrag den Erfahrungen von engagierten Bürger*innen mit der Gestaltung von Heimat. Anhand von Erkenntnissen aus dem Programm »Neulandgewinner« und dem Beispiel des Kulturhauses Mestlin beleuchten sie den politischen Rahmen und die regulatorischen Voraussetzungen dafür, dass engagierte Akteure vor Ort Gesellschaft selbst gestalten und Zukunft erfinden können. Unterschiedliche Menschen und Vereine in vielen kleinen Gemeinden zeigen mit Zivilcourage und Mut, wie Zivilgesellschaft funktionieren kann und was es braucht, um im ländlichen Raum gut zu leben. Bürgerschaftliches Engagement braucht als Partner eine handlungsfähige, flexible und verantwortungsvolle Verwaltung, und auch der ländliche Raum muss mit einer ausreichenden Grundstruktur ausgestattet werden. Bei Heimatpolitik geht es um Lokalpolitik, eine Politik vor Ort, bei den Menschen, mit den Menschen und für die Menschen, um sie ernst zu nehmen, zu stärken und zu unterstützen.
Städte als Gestalter des Wandels und kulturelle Heimat für alle
Authors: Stausberg Christina
Published: January 2021

Christina Stausberg geht in ihrem Beitrag der Frage nach, was »Heimat« für die kommunale Kulturpolitik bedeutet. Der Deutsche Städtetag hat bereits 2017 seine Hauptversammlung unter das Motto »Heimat. Zukunft. Stadt« gestellt, um den Wert der Städte für das Zusammenleben der Menschen in der Gesellschaft zu verdeutlichen, als Heimat in einer unruhiger werdenden Welt. Insofern ist »Heimat« für die kommunale Kulturpolitik eher ein praktischer Begriff - die Stadt als Heimat für alle Menschen, die in ihr leben. Weltoffentheit und Heimat sind dabei zwei Seiten einer Medaille. Kommunale Kulturpolitik steht vor der Herausforderung, aktuelle gesellschaftliche Entwicklungen in ihrer Steuerungs- und Fördersystematik abzubilden und Kunst und Kultur die Freiräume zu verschaffen, damit sie ihre wichtige gesellschaftliche und identitätsstiftende Funktion entfalten können.
Les recherches examinant le rapport entre les médias et la petitesse (smallness)
Authors: Bersipont Rémy
Published: January 2021

Cet article propose une synthèse des recherches interrogeant le rapport entre les médias et la petitesse (smallness). Par le biais d’une méthode mixte, il montre que l’audiovisuel et les politiques médiatiques constituent les objets les plus régulièrement étudiés. Longtemps marginales au sein de l’agenda scientifique, les publications ayant pour thématique la presse écrite connaissent, depuis le milieu des années 2010, une croissance notable sous l’impulsion de la révolution numérique. Après avoir classifié la littérature en quatre idéal-types disciplinaires (l’économie politique des médias, l’économie des médias, les études en journalisme et les cultural studies), nous mettons en évidence que, au sein du corpus analysé, les recherches appartiennent principalement à la première tradition scientifique. L’article analyse ensuite les principaux résultats auxquels sont parvenus les chercheurs œuvrant au sein de chacun des courants identifiés avant de conclure en proposant plusieurs pistes de recherche.
Neural Network based Diagnostic of PEM Fuel Cell
Authors: Kahia Hichem , Aicha Saadi , Herbadji Djamel , Herbadji Abderrahmane , Bedda Said
Published: January 2021

This paper focuses in finding a suitable, effective, and easy to use method, to avoid the frequent mistakes that are presented by the poor flow of water inside the fuel cell during its operation. Towards this aim, the artificial intelligence technology is proposed. More specifically, a neural network model is used to enable monitoring the influence of the humidity content of the fuel cell membrane, through employing electrochemical impedance spectroscopy method (EIS analysis). This technique allows analyzing and diagnosing PEM fuel cell failure modes (flooding & drying). The benefit of this work is summed up in the demonstration of the existence in a simple way that helps to define the state of health of the PEMFC.
Investigation on the Optimal Angle of a Flow-Field Design Based on the Leaf-Vein Structure for PEMFC
Authors: Lian Yutao , Xie Qizhen , Zheng Minggang
Published: January 2021

As a critical component, the bipolar plate appreciably affects the performance of proton exchange membrane fuel cell (PEMFC). The flow field structure on the bipolar plate is significant in transporting the internal reaction gas and excess water. In the nature, the leaf veins provide efficient branch networks to the plant, contributing to distribute the nutrients in the whole system. By bionic means, a similar branching structure can be used to design flow channels on the bipolar plates for PEMFC, which helps distribute the reactant gas evenly and manage the water better. In this paper, a three-dimensional isothermal single phase model of the bio-inspired flow channel design based on the leaf vein pattern was presented. The effect of the angle between the main channel and sub-channels on the performance of PEMFC was studied at various cases. A PEMFC of 10.24cm2 activation area was assembled and examined experimentally. The results showed that increasing the angle appropriately was beneficial to improving the uniform oxygen distribution and excess water removal. After comprehensively analyzing the electrochemical performance, species distribution, and power loss of PEMFC, the optimal angle was presented.
Autoevaluación del aprendizaje clínico en estudiantes de enfermería. Validación de rúbrica
Authors: Espinosa Fernández María Bruna , Brito Herrera Bárbara , Celedón Ivonne Jaime , Magni Acevedo Carolina , Galvez Carvajal Roxana
Published: January 2021

Introducción. La autoevaluación es la forma de evaluación que hace una persona de sí misma; supone aspectos claves para el desarrollo de la madurez, como son autocrítica, autoconocimiento, autoconcepto y la capacidad de reflexionar, lo que genera conocimiento a partir de la práctica. La capacidad para la autoevaluación se aprende, y los estudiantes deben ejercitarse en ello, tomando conciencia por sí mismos de sus logros, errores y aspectos a mejorar. El estudiante debe contar con instrumentos confiables y válidos para que el proceso sea objetivo.Objetivo. Determinar el alcance de la rúbrica como instrumento confiable para la autoevalua-ción del aprendizaje clínico de los estudiantes de enfermería producto de la experiencia intrahos-pitalaria.Metodología: Investigación con metodología cuantitativa. El docente aplicó una rúbrica para evaluar la práctica clínica al mismo tiempo que el estudiante. Se realizó análisis de confiabilidad a través del Coeficiente Alpha de Cronbach y Coeficiente de Correlación Intraclase (CCI). Se aplicó t de Student para verificar diferencia de medias.Resultados: Participaron 37 estudiantes. Se obtuvo una rúbrica con Coeficiente Alpha de Cronbach de .750, CCI de ,655. Las puntuaciones obtenidas por los docentes como heteroevalua-ción y estudiantes como autoevaluación no evidenciaron diferencias estadísticamente significati-vas, p-valor > 0,05. Conclusiones: De acuerdo con los resultados obtenidos, se puede aseverar que una rúbrica válida y confiable es un instrumento objetivo para ser utilizado por los estudiantes. La autoevaluación es la reflexión sobre el propio desempeño, lo cual estimula habilidades metacognitivas y genera aprendizaje en los estudiantes
Bosna i Hercegovina - država ili protektorat?
Authors: Trlin Davor , Oruč Esad ,   International Burch University
Published: January 2021

In this paper, through the analysis of the normative framework for the operation of these institutions, but also their activity, and the application of international standards in BiH, we will try to find an answer to the question of whether Bosnia and Herzegovina is a state or a protectorate. A lot has been achieved through the implementation of the Dayton Agreement, but most of it was due to the activity of the international community. According to the General Framework Agreement for Peace, this activity does not envisage a protectorate. However, especially in the first years of the functioning of post-Dayton Bosnia and Herzegovina, many constitutional and legal theorists tried to define the legal nature of Bosnia and Herzegovina's dependence on the international community in certain elements (which later softened). The results showed no unambiguous answer. In the last fifteen years, this issue has moved to the periphery of interest in domestic and regional constitutional and legal science. But it seems the time to re-establish it has come, especially in light of the announcement of changes in the attitudes of key actors in the international community towards Bosnia and Herzegovina. We are also interested in the issue related to this central research, which is the degree of sovereignty of the state of Bosnia and Herzegovina inside and outside, given the Dayton construct of the international community's involvement in the constitutional and political system of Bosnia and Herzegovina.