bluuebunny/crossref_metadata_2025_split huggingface dataset:
Vélemények a home office-ról – előnyök, hátrányok
Authors: Kis Éva Irén 
Published: April 2020

A home office, amely a távmunka otthonról végzett verziója, és egyre elterjedtebb nem csak a multinacionális, de a kisebb cégeknél is, mint foglalkoztatási forma. Alkalmazását az informatika fejlődése teszi lehetővé, népszerűségét az egyén oldaláról az otthoni munkavégzés kényelmi elemei, a munkába járás idejének megtakarítása indokolja. A munkáltatóknak költségmegtakarítást tesz lehetővé, és meghatározott tevékenységi körökben előnyös lehet a munkaerőhiány kezelésében, a tehetségekért folytatott konkurenciaharcban. Elvileg egyik eszköze lehet a foglalkoztatottság további növelésének is Ugyanakkor pozitívumok mellett negatív tulajdonságokkal, hatásokkal is jellemezhető mind a munkavállalók, mind a munkáltatók oldaláról. A preferenciák, illetve a home office alkalmazás körülményeinek feltárására cikk szerzője kérdőíves kutatást végzett az ország vezető távközlési vállalatcsoportjának munkatársai körében. A felmérés alapján kialakult kép akár már a közeljövő hazai tendenciáit is tükrözheti. Opinions about home office – advantages and disadvantagesHome office is a version of remote work done at home, and it is a form of employment more and more widely used not only by multinational companies but smaller ones, as well. Its application is enabled by the development of informatics, and its popularity is rooted in the comfort elements of doing work at home and sparing the time of travelling to and from work. It allows the employers to save costs and in certain activity fields, it can be useful in managing labour shortage and in the competition for talented people. In principle, it can be a tool of increasing employment, as well. At the same time, besides the positive factors, it has negative features and impacts, too, on both the employees’ and the employers’ side. In order to explore the preferences and the circumstances of applying home office, the author implemented a query-based survey involving the employees of Hungary’s leading telecommunications company group. The picture gained from the survey might even reflect the domestic trends of the near future.
A duális képzés eredményességre gyakorolt hatása
Authors: Kocsis Zsófia 
Published: April 2020

Világszerte kihívást jelent a felsőoktatási intézményeknek, hogy képzéseivel előkészítse a hallgatók munkaerőpiaci elhelyezkedését. A felsőoktatási politikai reformok keresik a megfelelő megoldást erre, s az egyik ilyen megoldásnak tekintjük a duális képzést. A duális képzés célja az egyetemek és a munkaadók közötti kooperáció támogatása, amelynek többek között a német szakképzésben vannak hagyományai (Baethge & Wolter, 2015; Göhringer, 2002). Tanulmányunkban kvantitatív és kvalitatív adatokra támaszkodva vizsgáljuk a Magyarországon 2015-ben indult duális képzés és a hagyományos típusú képzésben résztvevő hallgatók tapasztalatit, valamint a munka és a tanulás integrációját, és az eredményességi percepciókat. Arra a kérdésre kerestük a választ, hogy melyik hallgató csoportnak jobb a tanulmányi eredménye, s milyen fejlődést érzékelnek a munkavégzéssel kapcsolatos képességeikben. Eredményeink azt mutatták, hogy a duális hallgatóknak jobbak a tanulmányi eredményeik, mint a hagyományos képzésben lévőké. A kutatás interjús részében fény derült arra, hogy a hallgatók jelentős képességfejlődést érzékelnek, azonban eredményeink további kvantitatív eljárások lebonyolítására hívja fel a figyelmet.Universities worldwide are challenged to prepare their students for expectation of the labor market. Higher education policy reforms are looking for the right solution, our opinion is that a dual education can be one of the best solution. The purpose of dual education is to confirm relationship between higher education institutions and employers, which has traditions in German vocational training (Baethge & Wolter, 2015; Göhringer, 2002). In our research based on quantitative and qualitative data, we examine the experiences of students in dual education and traditional education, the balance between work and study, and the academic performance of students. During the research, we tried to find the answer to the questions of which student group had better academic achievement and how they thought improvement in their abilities. The results have shown that dual students have better academic performance than those in traditional education. Based on the qualitative part of the research, the students perceive significant development of skills. Our results encourage us to call for further quantitative procedures.
Largely Suppressed Magneto-Thermal Conductivity and Enhanced Magneto-Thermoelectric Properties in PtSn
4
Authors: Fu Chenguang , Guin Satya N. , Scaffidi Thomas , Sun Yan , Saha Rana , Watzman Sarah J. , Srivastava Abhay K. , Li Guowei , Schnelle Walter , Parkin Stuart S. P. , Felser Claudia , Gooth Johannes 
Published: April 2020

Highly conductive topological semimetals with exotic electronic structures offer fertile ground for the investigation of the electrical and thermal transport behavior of quasiparticles. Here, we find that the layer-structured Dirac semimetal PtSn
4
exhibits a largely suppressed thermal conductivity under a magnetic field. At low temperatures, a dramatic decrease in the thermal conductivity of PtSn
4
by more than two orders of magnitude is obtained at 9 T. Moreover, PtSn
4
shows both strong longitudinal and transverse thermoelectric responses under a magnetic field. Large power factor and Nernst power factor of approximately 80–100
μ
W·cm
-1
·K
-2
are obtained around 15 K in various magnetic fields. As a result, the thermoelectric figure of merit

z
T

is strongly enhanced by more than 30 times, compared to that without a magnetic field. This work provides a paradigm for the decoupling of the electron and hole transport behavior of highly conductive topological semimetals and is helpful for developing topological semimetals for thermoelectric energy conversion.
Ozone Gas: Scientific Justification and Practical Guidelines for Improvised Disinfection using Consumer-Grade Ozone Generators and Plastic Storage Boxes.
Authors: Dennis Robert , Cashion Avery , Emanuel Steven , Hubbard Devin 
Published: April 2020

We describe direct measurements of ozone concentration achievable in small enclosed containers (plastic storage boxes) for use as improvised decontamination systems for small articles such as disposable PPE (N95 masks, nitrile gloves, etc.), clothing, mail and small packages, food, and other miscellaneous articles. The emphasis is on the reliable and sustained generation of ozone gas concentrations of sufficient concentration and duration to create an effective virucidal environment to achieve more than 95% to 99% viral inactivation, based upon the data already published in the peer-review literature on this topic.
The suggestion that ozone be used to inactivate virus is certainly not a new idea. Our objective in this report is to make clear that the necessary levels of ozone can be improvised using simple, easy-to-use, inexpensive, and widely available supplies, and that there is every theoretical and experimental reason to believe that this approach is as highly effective in viral inactivation by ozone as are the far more expensive, complex, cumbersome, and less available equivalent ozone (and other) disinfectant systems that have themselves become unavailable during times of pandemic crisis.
Using multiple types of readily available commercial ozone generators, concentration in the tested improvised enclosure is tracked over time to assess ozone charging and decay rates, and the ozone quenching effects of items placed in the box. Generator performance is compared against published ozone dosage values for virucidal and antimicrobial activity. Bubbler and box-fan-type ozone generators were found to be effective at achieving and maintaining target concentrations of 10ppm ozone or higher, whereas automotive cigarette lighter and universal serial bus type plug in “air freshener” ozone generators could not achieve the target concentrations in these experiments. Calculations and practical guidelines for assembly and effective use of an ozone box for improvised decontamination are offered.
The majority of this report is directed toward the scientific justification and rationale for this approach. The end of the document summarizes the findings and offers simplified designs for the construction and use of ozone boxes as an improvised method of disinfection.
Níveis de aprendizagem para o tópico de funções no Ensino Médio
Authors: Nasser Lilian , Cardoso Eduarda de Jesus 
Published: April 2020

A Teoria de van Hiele para o Desenvolvimento do Pensamento Geométrico tem sido considerada como guia ao ensino e à aprendizagem de Geometria. Este modelo consiste em dois grandes princípios: descrição da estrutura cognitiva, caracterizada por níveis mentais hierárquicos a serem atingidos pelos alunos e pela metodologia de ensino para que estes níveis sejam alcançados, orientando professores quanto à tomada de decisão relacionada ao ensino. A partir de um estudo sobre os modelos de desenvolvimento do pensamento sobre a linguagem de funções, este trabalho tem o objetivo de relatar o processo de testagem e validação de um modelo de níveis de desenvolvimento para a aquisição do conceito de função, baseado no modelo de Van Hiele. Para isso, foram aplicadas atividades variadas a alunos do Ensino Médio. Os resultados comprovam a validade da escala proposta, já que a classificação dos alunos da amostra se distribuiu por todos os níveis, obedecendo a hierarquia.

Palavras-chave: Função. Teoria de van Hiele. Níveis de aprendizagem. Classificação dos alunos. Intervenção didática.
Dust Destruction by Drift-induced Sputtering in Active Galactic Nuclei
Authors: Tazaki Ryo , Ichikawa Kohei 
Published: April 2020

Abstract
Recent mid-infrared high spatial resolution observations have revealed that active galactic nuclei (AGNs) may host a polar dust region with the size of several pc, and such dust may be carried by radiation from the central engine. The polar dust emission often exhibits very weak or absence of the silicate 10 μm emission feature. A possible explanation is that the polar dust is dominated by micron-sized large grains because these grains do not show the silicate feature, while it remains unclear how large grains are preferentially supplied to the polar region. Here, we propose a new scenario describing the prevalence of large grains at the polar region. We show that grains are accelerated to the hypersonic drift velocity by the radiation pressure from AGN, and the hypersonic drift results in dust destruction via kinetic sputtering. Sputtering destroys small grains faster than the large ones, and thus larger grains will be preferentially blown over longer distance. Although the hypersonic drift, or kinetic sputtering, tends to be suppressed for very small grains due to the Coulomb drag, they might also be disrupted by Coulomb explosion. Removal of small grains and/or survival of large grains may explain the lack of a silicate 10 μm emission feature in polar dust emission.
Solar Flare Predictive Features Derived from Polarity Inversion Line Masks in Active Regions Using an Unsupervised Machine Learning Algorithm
Authors: Wang Jingjing , Zhang Yuhang , Hess Webber Shea A. , Liu Siqing , Meng Xuejie , Wang Tieyan 
Published: April 2020

Abstract
The properties of the polarity inversion line (PIL) in solar active regions (ARs) are strongly correlated to flare occurrences. The PIL mask, enclosing the PIL areas, has shown significant potential for improving machine-learning-based flare prediction models. In this study, an unsupervised machine-learning algorithm, Kernel Principle Component Analysis (KPCA), is adopted to directly derive features from the PIL mask and difference PIL mask, and use those features to classify ARs into two categories—non-strong flaring ARs and strong-flaring (M-class and above flares) ARs—for time-in-advance from one hour to 72 hr at a 1 hr cadence. The two best features are selected from the KPCA results to develop random-forest classifiers for predicting flares, and the models are then evaluated and compared to similar models based on the R value and difference R value. The results show that the features derived from the PIL masks by KPCA are effective in predicting flare occurrence, with overall better Fisher ranking scores and similar predictive statistics as the R value characteristics.
Isotropic Scaling Features Measured Locally in the Solar Wind Turbulence with Stationary Background Field
Authors: Wu Honghong , Tu Chuanyi , Wang Xin , He Jiansen , Yang Liping , Wang Linghua 
Published: April 2020

Abstract
The scaling anisotropy is crucial to interpret the nonlinear interactions in solar wind turbulence. Previous observations provide diverse results and the structure function analyses are also reported to be an approach to investigate the scaling anisotropy based on a local magnetic field. However, the determination of the sampling angle with respect to the local background magnetic field requires that the observed time series for the average are time stationary. Whether or not this required time stationarity is compatible with the measurements has not been investigated. Here we utilize the second-order structure function method to study the scaling anisotropy with a time-stationary background field. We analyze 88 fast solar wind intervals each with time durations ≥ 2 days measured by WIND spacecraft in the period 2005–2018. We calculate the local magnetic field as the average of the time series

whose time stationarity is fulfilled by our criterion ϕ < 10° (ϕ is the angle between the two averaged magnetic fields after cutting

into two halves). We find for the first time the isotropic scaling feature of the magnetic-trace structure functions with scaling indices

and

, respectively, with the local magnetic field parallel and perpendicular to the solar wind velocity directions. The scaling for the velocity-trace structure functions is also isotropic and the indices are

and

. We also find that with increasing ϕ threshold to 90°, the scaling index of the magnetic-trace structure function in the parallel direction decreases to −0.81, while the rms of the instantaneous angle between magnetic field and solar wind velocity increases up to 45° at the timescale 150 s, indicating a mix of perpendicular measurements into parallel ones at large scales.
Nicole Mitchell, Jazz and the Dialectics of the Afrofuturist Imaginary
Authors: Tyldesley Mike 
Published: April 2020

Cet article examinera trois CD de la flûtiste jazz afro-américaine Nicole Mitchell, et les utilisera pour étudier l’afrofuturisme. Elle proposera que l’afrofuturisme soit perçu comme un imaginaire, plutôt que simplement comme un « genre » de production artistique. Elle montrera l’influence de l’écrivain afrofuturiste Octavia Butler sur Mitchell, puis exposera les diverses manières par lesquelles Butler et Mitchell ont exprimé l’imaginaire afrofuturiste. Elle proposera que nous trouvons deux orientations qui sont visiblement apparemment radicalement différentes dans les productions artistiques afrofuturistes : « fantasme spatial » d’une part, et critique sociale « réaliste » d’autre part. Cet exposé conclura en soutenant que cela montre que l’imaginaire afrofuturiste doit plutôt être examiné dialectiquement, et que ces orientations contradictoires peuvent être perçues comme des éléments essentiels d’un ensemble complexe.
A Systematic Review of the Applicability and Efficacy of Eye Exercises
Authors: Rawstron John Albert , Burley Celeste D. , Elder Mark J. 
Published: April 2020

Purpose:
To examine the current scientific evidence base regarding the efficacy of eye exercises as used in optometric vision therapy.

Methods:
A search was performed of the following databases: Allied and Complementary Medicine Database, Cochrane Database of Systematic Reviews, Cochrane Register of Controlled Trials, EMBASE, and MEDLINE. Relevant articles were reviewed and analyzed for strengths and weaknesses. Pertinent sections of classic texts were studied to provide a historical basis and to serve as a source for additional early references.

Results:
Forty-three refereed studies were obtained. Of these, 14 were clinical trials (10 controlled studies), 18 review articles, 2 historical articles, 1 case report, 6 editorials or letters, and 2 position statements from professional colleges. Many of the references listed by the larger reviews were unpublished or published in obscure or nonrefereed sources and therefore were not accessible.

Conclusions:
Eye exercises have been purported to improve a wide range of conditions including vergence problems, ocular motility disorders, accommodative dysfunction, amblyopia, learning disabilities, dyslexia, asthenopia, myopia, motion sickness, sports performance, stereopsis, visual field defects, visual acuity, and general well-being. Small controlled trials and a large number of cases support the treatment of convergence insufficiency. Less robust, but believable, evidence indicates visual training may be useful in developing fine stereoscopic skills and improving visual field remnants after brain damage. As yet there is no clear scientific evidence published in the mainstream literature supporting the use of eye exercises in the remainder of the areas reviewed, and their use therefore remains controversial.

J Pediatr Ophthalmol Strabismus
2005;42:82–88.
Large-Angle Strabismus and Primary True Muscle Transplantation
Authors: Amitava A. K. , Goswami Anup K. , Mishra Amit 
Published: April 2020

Background:
Large-angle strabismus often demands a series of surgeries to achieve satisfactory alignment. This often necessitates bilateral surgery, which patients may be reluctant to undergo.

Methods:
Three patients with large-angle esotropia, not amenable to standard recession and resection procedures, underwent primary true muscle transplantation wherein a fragment of resected extraocular muscle was used to elongate the medial rectus muscle.

Results:
Postoperative deviation was within ± 10 PD of orthophoria and was maintained at follow-up of 6 to 12 months. There was mild underaction of the weakened muscle.

Conclusion:
True muscle transplantation is a good option because it permits correction of large-angle strabismus with two-muscle surgery, provides a satisfactory cosmetic alignment, and appears safe and predictable.

J Pediatr Ophthalmol Strabismus
2005;42:211–215.
Épigraphie et mise en scène de la domination sociale dans la Gaule méridionale tardive (IV e-VIe s.)
Authors: Stein Christian 
Published: April 2020

On possède peu d’inscriptions gauloises qui mentionnent des membres des élites au IV  s. Le corpus exploitable fait moins d’une quinzaine de textes et brille surtout par l’absence des clarissimes, ou du moins d’individus explicitement indiqués comme tels. Comme on sait par ailleurs que ce groupe est tout de même assez fourni en Gaule au IV e s., on en arrive vite à l’idée que l’épigraphie n’était pas à leurs yeux un moyen de se mettre en scène dans l’espace social. Il est cependant perceptible que les choses changèrent aux V e et VIe s. en Gaule méridionale : dans un contexte d’effondrement de l’Empire d’Occident, les inscriptions commémorant les membres des grandes familles gallo-romaines sont désormais relativement nombreuses. La lettre III, 12 de Sidoine Apollinaire, à propos de la tombe et de l’épitaphe de son grand père, permet de percevoir ce changement de sensibilité envers l’épigraphie.
The Possible Uses and Challenges of Nanomaterials in Mast Cell Research
Authors: Duguay Brett A. , Lu Lei , Arizmendi Narcy , Unsworth Larry D. , Kulka Marianna 
Published: April 2020

AbstractMast cells are tissue-resident immune cells that are involved in inflammation and fibrosis but also serve beneficial roles, including tissue maintenance, angiogenesis, pathogen clearance, and immunoregulation. Their multifaceted response and the ability of their mediators to target multiple organs and tissues means that mast cells play important roles in numerous conditions, including asthma, atopic dermatitis, drug sensitivities, ischemic heart disease, Alzheimer disease, arthritis, irritable bowel syndrome, infections (parasites, bacteria and viruses), and cancer. As a result, mast cells have become an important target for drug discovery and diagnostic research. Recent work has focused on applying novel nanotechnologies to explore cell biology. In this brief review, we will highlight the use of nanomaterials to modify mast cell functions and will discuss the potential of these technologies as research tools for understanding mast cell biology.
Unexpected high abyssal ophiuroid diversity in polymetallic nodule fields of the northeast Pacific Ocean and implications for conservation
Authors: Christodoulou Magdalini , O'Hara Timothy , Hugall Andrew F. , Khodami Sahar , Rodrigues Clara F. , Hilario Ana , Vink Annemiek , Martinez Arbizu Pedro 
Published: April 2020

Abstract. The largest and commercially appealing mineral deposits
can be found in the abyssal sea floor of the Clarion-Clipperton Zone (CCZ), a
polymetallic nodule province, in the NE Pacific Ocean, where experimental
mining is due to take place. In anticipation of deep-sea mining impacts, it
has become essential to rapidly and accurately assess biodiversity. For this
reason, ophiuroid material collected during eight scientific cruises from
five exploration licence areas within CCZ, one area being protected from mining
(APEI3, Area of Particular Environmental Interest) in the periphery of CCZ
and the DISturbance and re-COLonisation (DISCOL) Experimental Area (DEA),
in the SE Pacific Ocean, was examined. Specimens were genetically analysed
using a fragment of the mitochondrial cytochrome c oxidase subunit I (COI).
Maximum-likelihood and neighbour-joining trees were constructed, while four
tree-based and distance-based methods of species delineation (automatic barcode gap discovery, ABGD; barcode index numbers, BINs;
general mixed Yule–coalescent, GMYC; multi-rate Poisson tree process, mPTP) were employed to propose secondary species hypotheses (SSHs)
within the ophiuroids collected. The species delimitation analyses'
concordant results revealed the presence of 43 deep-sea brittle star SSHs,
revealing an unexpectedly high diversity and showing that the most
conspicuous invertebrates in abyssal plains have been so far considerably
underestimated. The number of SSHs found in each area varied from five (IFREMER area) to 24 (BGR (Federal Institute for Geosciences and Natural Resources,
Germany) area) while 13 SSHs were represented by
singletons. None of the SSHs were found to be present in all seven areas while
the majority of species (44.2 %) had a single-area presence (19 SSHs).
The most common species were Ophioleucidae sp. (Species 29), Amphioplus daleus (Species 2)
and Ophiosphalma glabrum (Species 3), present in all areas except APEI3. The biodiversity
patterns could be mainly attributed to particulate organic carbon (POC) fluxes that could explain the
highest species numbers found in BGR (German contractor area) and UKSRL (UK Seabed Resources Ltd, UK
contractor area) areas. The five exploration contract areas belong to a
mesotrophic province, while conversely the APEI3 is located in an
oligotrophic province, which could explain the lowest diversity as well as
very low similarity with the other six study areas. Based on these results
the representativeness and the appropriateness of APEI3 to meet its purpose
of preserving the biodiversity of the CCZ fauna are questioned. Finally,
this study provides the foundation for biogeographic and functional analyses
that will provide insight into the drivers of species diversity and its role
in ecosystem function.