bluuebunny/crossref_metadata_2025 huggingface dataset:
Kinetics and Mechanisms of Ligand-Exchange of Cu(Methionine)2 by Polyamines
Authors: Moheman Abdul , Bhawani Showkat Ahmad , Siddiqi Khwaja Salahuddin
Published: January 2023

The kinetics of ligand substitution reaction of Cu(methionine)2 complex by polyamines has been followed conductometrically above pH 9.0 at 25 oC. Millimolar solution of the Cu(NO3)2 and methionine in 1:2 molar ratio in water shows increase in conductance with time. When a polyamine (en, dien and trien) is added to the complex, the conductance increases at a rapid rate due to substitution of methionine by polyamine leading to the formation of [Cu(polyamine)2]. It was observed that the exchange of methionine by polyamine proceeds in a first order process. Since the rate of the reaction varies with the size of polyamines they can be placed in the following, en > dien > trien. In acidic pH range the absorption spectrum varies negligibly. However, the concentration of methionine does not have any influence on the absorption spectra.
Compact non-volatile ferroelectric electrostatic doping optical memory based on the epsilon-near-zero effect
Authors: Zhang Yong , Li Lei , Xie Han , Jiang Zhi , Li Yang , Wang Tongtong , Yao Danyang , Liu Yan , Han Genquan , Hao Yue
Published: January 2023

With the booming development of optoelectronic hybrid integrated circuits, the footprint and power consumption of photonic devices have become the most constraining factors for development. To solve these problems, this paper proposes a compact, extremely low-energy and non-volatile optical readout memory based on ferroelectric electrostatic doping and the epsilon-near-zero (ENZ) effect. The writing/erasing state of an optical circuit is controlled by electrical pulses and can remain non-volatile. The device works on the principle that residual polarization charges of ferroelectric film, which is compatible with CMOS processes, are utilized to electrostatically dope indium tin oxide to achieve the ENZ state. Simulation results show that a significant modulation depth of 10.4 dB can be achieved for a device length of 60 µm with an energy consumption below 1 pJ.
Automatic depth map retrieval from digital holograms using a depth-from-focus approach
Authors: Madali Nabil , Gilles Antonin , Gioia Patrick , Morin Luce
Published: January 2023

Recovering the scene depth map from a computer-generated hologram is a problem that remains unsolved, despite the growing interest in the subject. In this paper, we propose to study the application of depth-from-focus (DFF) methods to retrieve the depth information from the hologram. We discuss the different hyperparameters that are required for the application of the method and their impact on the final result. The obtained results show that DFF methods can be used for depth estimation from the hologram if the set of hyperparameters is well chosen.
Accelerating superluminal laser focus generated by a long-focal-depth mirror with high numerical aperture
Authors: Fan Quanping , Wang Yiming , Miao Zhuanglei , Yang Zuhua , Fan Wei , Chen Yong , Liu Dongxiao , Zhang Qiangqiang , Wei Lai , Zang Huaping
Published: January 2023

The long-focal-depth mirror is a novel reflective element proposed in recent years. Due to the advantages of negligible dependence on wavelength and high damage threshold, it is suitable to focus ultra-short laser pulses with broadband spectra and high intensity with a focal depth of centimeter scale. To the best of our knowledge, the focusing properties of this mirror has been only studied under low numerical aperture (NA). In this paper, we extend it to the case of high NA and it is proved that an accelerating superluminal laser focus can be always generated by this extension, in which the degree of acceleration increases with the increase of NA. And the velocity of laser focus increases approximately linearly from c to 1.6c for NA = 0.707. Due to its properties of tight focusing, the Richards-Wolf integrals have been used to study the intensity distribution of each polarization component for different kinds of incident light. And these are linearly polarized light, radially polarized light, azimuthally polarized light, linearly polarized light with spiral phase, and linearly polarized light with ultrashort pulses. From comparisons of numerical results, the intensity distributions are obviously different for different kind of incident light, and accelerating superluminal laser focus with special structure (such as the hollow conical beam) can be produced under appropriate condition. We believe this study can expand the fields of application for the long-focal-depth mirror.
Wavelength selection of dual-mechanism LiDAR with reflection and fluorescence spectra for plant detection
Authors: Chen Bowen , Shi Shuo , Gong Wei , Xu Qian , Tang Xingtao , Bi Sifu , Chen Biwu
Published: January 2023

With the continuous expansion and refinement in plant detection range, reflection, and fluorescence spectra present great research potentials and commercial values. Referring technical advantages with hyperspectral and fluorescence lidar for monitoring plants, the synchronous observation with reflection and fluorescence signals achieved by one lidar system has attracted wide attention. This paper plans to design and construct a dual-mechanism lidar system that can obtain spatial information, reflection, and fluorescence signals simultaneously. How to select the optimal detected bands to the dual-mechanism lidar system for monitoring plants is an essential step. Therefore, this paper proposes a two-step wavelength selection method to determine the optimal bands combination by considering the spectral characteristic of reflection and fluorescence signals themselves, and the hardware performance of lidar units comprehensively. The optimal bands combination of 4 reflection bands of 481 nm, 541 nm, 711.5 nm, 775.5 nm, and 2 fluorescence bands of 686.5 nm, 737 nm was determined. Besides, compared with the original reflection or fluorescence bands, the overall accuracy and average accuracy of the optimal band combination were respectively improved by 2.51%, 15.45%, and 7.8%, 29.06%. The study demonstrated the reliability and availability of the two-step wavelength selection method, and can provide references for dual-mechanism lidar system construction.
Automated rolling shutter calibration with an LED panel
Authors: Huai Jianzhu , Zhuang Yuan , Wang Binliang , Zhang Chongyang , Shao Yuxin , Tang Jicheng , Yilmaz Alper
Published: January 2023

Cameras with rolling shutters (RSs) dominate consumer markets but are subject to distortions when capturing motion. Many methods have been proposed to mitigate RS distortions for applications such as vision-aided odometry and three-dimensional (3D) reconstruction. They usually need known line delay d between successive image rows. To calibrate d, several methods have been proposed that often involve complex procedures. This Letter proposes an easy RS calibration method by using an off-the-shelf light-emitting diode (LED) panel, using the fact that the RS causes the blinking LED columns to appear slanted in images by a static camera. The calibration starts with extracting the LED lights and then rectifies the images to remove the lens distortion and misalignment between the camera and the LED panel. Next, blocks of slanted bright LEDs are recognized and their inclination leads to the line delay estimate. Our method needs not to move the camera, adjust the ambient light, or calibrate camera intrinsic parameters beforehand, and it can usually estimate the line delay given two LED panel images in one second. Extensive tests with industrial cameras and consumer cameras of wide-angle and fish-eye lenses validate its competitive accuracy relative to the established methods.
Thickness-dependent Auger scattering in a single WS2 microcrystal probed with time-resolved terahertz near-field microscopy
Authors: ter Huurne Stan E. T. , van Hoof Niels J. J. , Gómez Rivas Jaime
Published: January 2023

Time-resolved terahertz (THz) spectroscopy has been shown as a powerful
technique to non-invasively determine the charge carrier properties in
photoexcited semiconductors. However, the long wavelengths of
terahertz radiation reduce the applicability of this technique to
large samples. Using THz near-field microscopy, we show THz
measurements of the lifetime of 2D single exfoliated microcrystals of
transition metal dichalcogenides (WS2). The increased
spatial resolution of THz near-field microscopy allows spatial mapping
of the evolution of the carrier lifetime, revealing Auger assisted
surface defect recombination as the dominant recombination channel.
THz near-field microscopy allows for the non-invasive and
high-resolution investigation of material properties of 2D
semiconductors relevant for nanoelectronic and optoelectronic
applications.
Magnetically driven micro-optical choppers fabricated by two-photon polymerization
Authors: Lei Xiaonan , Peng Sida , Niu Yahua , Sun Shengzhi , Zhu Yi , Qiu Jianrong
Published: January 2023

In this Letter, a series of magnetically driven micro-optical choppers based on customized photoresist were fabricated by two-photon polymerization (TPP) technology. Synthetic Fe3O4 nanoparticles (NPs) were modified and dispersed in the original photoresist to achieve magnetic field response. After accurately formulating a magnetic photoresist containing Rhodamine B to reduce the light transmittance, four micro-optical choppers with different slot widths were printed using optimized processing parameters. The micro-optical choppers were remotely manipulated to rotate by the external magnetic field. More importantly, the function demonstration of the micro-optical choppers with an excellent chopping effect was achieved at a given light wavelength of 515 nm. The magnetically driven micro-optical choppers provide a new approach, to the best of our knowledge, for the fabrication of external field-responsive optical components.
Freight Fleet Glasses – Augmented Reality Einsatz zur Unterstützung eines automatisierten und vernetzten Flottenmanagements
Authors: Heinbach Christoph , Dreesbach Tobias , Thomas Oliver
Published: January 2023

Innovative Wearable-Technologien haben sich in Form von Smart Glasses (dt.: Datenbrillen) für eine anwender- und prozessorientierte Bereitstellung von Informationen mit einem hohen betrieblichen Nutzen für lagerlogistische Prozesse etabliert. Durch die Verarbeitung von Detailinformationen in Echtzeit sowie die Anbindung an bestehende Informationssysteme, wird der Technologieeinsatz zur Bewältigung komplexer und datengetriebener Arbeitsaufgaben in einem dynamischen Betriebsumfeld auch für das Reparatur- und Instandhaltungsmanagement von Fahrzeugflotten hochrelevant. In Kombination mit einer visuellen Überlagerung von Objekten oder Inhalten in die reale Umgebung durch Augmented Reality (AR) eröffnen sich weitere Potenziale. In diesem Beitrag zeigen die Autoren die Einsatzbereiche von AR für ein automatisiertes und vernetztes Flottenmanagementsystem auf, das im Rahmen eines vom Bundesministerium für Wirtschaft und Klimaschutz geförderten Konsortialforschungsprojekts entsteht. Dazu wird der neuartige Ansatz Freight Fleet Glasses zur kontextadaptiven und automatisierten Ausführung identifizierter Werkstattprozesse präsentiert. Eine Einblendung fahrzeugspezifischer Reparatur- und Instandhaltungsdaten sowie die Dokumentation der Arbeitsprozesse mithilfe einer integrierten Kamera unterstützen die Arbeitsprozesse und den Informationsaustausch des vernetzten Systems. Im Anschluss wird das präsentierte Konzept in das Entwicklungsvorhaben Smart Managed Freight Fleet eingeordnet. Abschließend werden Implikationen für die Akteure im Flottenmanagement im Kontext der digitalen Transformation der Güterverkehrsbranche formuliert. AR-Technologien erhöhen die Prozesseffizienz und können gewinnbringend integriert werden, um nicht ausgeschöpfte Dienstleistungspotenziale für das Flottenmanagement zu heben.
Marktdominanz von Maklern auf Onlineimmobilienportalen in Deutschland und Kalifornien
Authors: Behler Cedric , Gärtner Philip , Linke Hans-Joachim
Published: January 2023

Der Marktanteil von Maklern als wichtige Kenngröße zum Verkaufsprozess auf dem Wohnimmobilienmarkt ist nicht erst seit der Einführung des Bestellerprinzips ein intensiv diskutiertes Thema, zu dem überraschend wenig belastbare Informationen zur Verfügung stehen. Da dieser Missstand des Informationsmangels auch bei vielen weiteren Aspekten von Immobilienmärkten auftritt, ist in jüngerer Vergangenheit verstärkt zu beobachten, dass Daten von Onlineimmobilienportalen, als am weitesten verbreiteter Vermarktungsmöglichkeit, analysiert werden. Diese Studie fügt sich mit einer vergleichenden Analyse der Maklerquote auf dem deutschen sowie dem US-amerikanischen (Teilmarkt Kalifornien) Onlineimmobilienmarkt in diese Bemühungen zur Steigerung der Transparenz ein. Hierzu wurden von marktführenden Immobilienportalen in Deutschland und den USA Angebotsdaten ausgewertet. Die statistische Analyse der insgesamt 69.711 Inserate umfasst dabei sowohl einen aggregierten Vergleich der Maklerquoten zwischen Deutschland und Kalifornien, als auch eine detaillierte Untersuchung über Unterschiede in der Häufigkeit eines Maklereinbezugs zwischen verschiedenen Marktsegmenten mittels einer logistischen Regression. Die zentrale Erkenntnis ist, dass die Maklerquote auf Immobilienportalen mit 98 % in Kalifornien signifikant über der Quote von rund 88 % in Deutschland liegt. Dies bestätigt die anhand der Analyse der Literatur abgeleitete Forschungsfrage, dass sich der Immobilienhandel in den betrachteten Ländern unterscheidet und in Kalifornien dabei häufiger Makler zum Einsatz kommen. Im Detail zeigt sich, dass in beiden Untersuchungsgebieten Eigenschaften wie Objektart und -standard einen Einfluss auf die Chance der Vermarktung mit oder ohne Makler haben. Im Ländervergleich sind dabei teils gleich- und teils gegenlaufende Effekte zu beobachten.
ESR1 gene amplification and MAP3K mutations are selected during adjuvant endocrine therapies in relapsing Hormone Receptor-positive, HER2-negative breast cancer (HR+ HER2- BC)
Authors: Ferrando Lorenzo , Vingiani Andrea , Garuti Anna , Vernieri Claudio , Belfiore Antonino , Agnelli Luca , Dagrada Gianpaolo , Ivanoiu Diana , Bonizzi Giuseppina , Munzone Elisabetta , Lippolis Luana , Dameri Martina , Ravera Francesco , Colleoni Marco , Viale Giuseppe , Magnani Luca , Ballestrero Alberto , Zoppoli Gabriele , Pruneri Giancarlo
Published: January 2023

Background

Previous studies have provided a comprehensive picture of genomic alterations in primary and metastatic Hormone Receptor (HR)-positive, Human Epidermal growth factor Receptor 2 (HER2)-negative breast cancer (HR+ HER2- BC). However, the evolution of the genomic landscape of HR+ HER2- BC during adjuvant endocrine therapies (ETs) remains poorly investigated.

Methods and findings

We performed a genomic characterization of surgically resected HR+ HER2- BC patients relapsing during or at the completion of adjuvant ET. Using a customized panel, we comprehensively evaluated gene mutations and copy number variation (CNV) in paired primary and metastatic specimens. After retrieval and quality/quantity check of tumor specimens from an original cohort of 204 cases, 74 matched tumor samples were successfully evaluated for DNA mutations and CNV analysis. Along with previously reported genomic alterations, including PIK3CA, TP53, CDH1, GATA3 and ESR1 mutations/deletions, we found that ESR1 gene amplification (confirmed by FISH) and MAP3K mutations were enriched in metastatic lesions as compared to matched primary tumors. These alterations were exclusively found in patients treated with adjuvant aromatase inhibitors or LHRH analogs plus tamoxifen, but not in patients treated with tamoxifen alone. Patients with tumors bearing MAP3K mutations in metastatic lesions had significantly worse distant relapse-free survival (hazard ratio [HR] 3.4, 95% CI 1.52–7.70, p value 0.003) and worse overall survival (HR 5.2, 95% CI 2.10–12.8, p-value < 0.001) independently of other clinically relevant patient- and tumor-related variables.

Conclusions

ESR1 amplification and activating MAP3K mutations are potential drivers of acquired resistance to adjuvant ETs employing estrogen deprivation in HR+ HER2- BC. MAP3K mutations are associated with worse prognosis in patients with metastatic disease.
MYB and ELF3 differentially modulate labor-inducing gene expression in myometrial cells
Authors: Shchuka Virlana M. , Khader Nawrah , Dorogin Anna , Shynlova Oksana , Mitchell Jennifer A.
Published: January 2023

Spontaneous uterine contractions are initiated when smooth muscle cells (SMCs) within the uterine muscle, or myometrium, transition from a functionally dormant to an actively contractile phenotype at the end of the pregnancy period. We know that this process is accompanied by gestational time point-specific differences in the SMC transcriptome, which can be modulated by the activator protein 1 (AP-1), nuclear factor kappa beta (NF-κβ), estrogen receptor (ER), and progesterone receptor (PR) transcription factors. Less is known, however, about the additional proteins that might assist these factors in conferring the transcriptional changes observed at labor onset. Here, we present functional evidence for the roles of two proteins previously understudied in the SMC context—MYB and ELF3—which can contribute to the regulation of labor-driving gene transcription. We show that the MYB and ELF3 genes exhibit elevated transcript expression levels in mouse and human myometrial tissues during spontaneous term labor. The expression of both genes was also significantly increased in mouse myometrium during preterm labor induced by the progesterone antagonist mifepristone (RU486), but not during infection-simulating preterm labor induced by intrauterine infusion of lipopolysaccharide (LPS). Furthermore, both MYB and ELF3 proteins affect labor-driving gene promoter activity, although in surprisingly opposing ways: Gja1 and Fos promoter activation increases in the presence of MYB and decreases in the presence of ELF3. Collectively, our study adds to the current understanding of the transcription factor network that defines the transcriptomes of SMCs during late gestation and implicates two new players in the control of labor timing.
lncRNA-disease association prediction based on the weight matrix and projection score
Authors: Wang Bo , Zhang Chao , Du Xiao-xin , Zheng Xiao-dong , Li Jing-you
Published: January 2023

With the development of medical science, long noncoding RNA (lncRNA), originally considered as a noise gene, has been found to participate in a variety of biological activities. Several recent studies have shown the involvement of lncRNA in various human diseases, such as gastric cancer, prostate cancer, lung cancer, and so forth. However, obtaining lncRNA-disease relationship only through biological experiments not only costs manpower and material resources but also gains little. Therefore, developing effective computational models for predicting lncRNA-disease association relationship is extremely important. This study aimed to propose an lncRNA-disease association prediction model based on the weight matrix and projection score (LDAP-WMPS). The model used the relatively perfect lncRNA-miRNA relationship data and miRNA-disease relationship data to predict the lncRNA-disease relationship. The integrated lncRNA similarity matrix and the integrated disease similarity matrix were established by fusing various methods to calculate the similarity between lncRNA and disease. This study improved the existing weight algorithm, applied it to the lncRNA-miRNA-disease triple network, and thus proposed a new lncRNA-disease weight matrix calculation method. Combined with the improved projection algorithm, the lncRNA-miRNA relationship and miRNA-disease relationship were used to predict the lncRNA-disease relationship. The simulation results showed that under the Leave-One-Out-Cross-Validation framework, the area under the receiver operating characteristic curve of LDAP-WMPS could reach 0.8822, which was better than the latest result. Taking adenocarcinoma and colorectal cancer as examples, the LDAP-WMPS model was found to effectively infer the lncRNA-disease relationship. The simulation results showed good prediction performance of the LDAP-WMPS model, which was an important supplement to the research of lncRNA-disease association prediction without lncRNA-disease relationship data.
Healing rate of macular edema secondary to branch retinal vein occlusion in two years after initiation of intravitreal ranibizumab later combined with other treatment as needed and characteristics of refractory cases
Authors: Kawakami Setsuko , Wakabayashi Yoshihiro , Watanabe Yoko , Umazume Kazuhiko , Yamamoto Kaori , Goto Hiroshi
Published: January 2023

Purpose

To investigate the 2-year healing rate of macular edema (ME) secondary to branch retinal vein occlusion (BRVO) treated initially with intravitreal ranibizumab (IVR) and later combined with other treatment as needed, and the characteristics of refractory cases.

Methods

130 patients (130 eyes) with BRVO-ME who received IVR initially were studied. Anti-vascular endothelial growth factor drug was additionally administered when ME relapsed or persisted. Photocoagulation was performed when the non-perfusion area (NPA) was ≥5 disc diameter (DD), and/or when ME relapsed due to microaneurysm. Patients were classified into a healed group [ME resolved in <2 years or mild ME remained without best-corrected visual acuity (BCVA) loss for ≥6 months] or refractory group (ME persisted for ≥2 years).

Results

110 eyes were classified into the healed group, and 20 eyes into the refractory group. The healed group and refractory group had, respectively, mean follow-up periods of 21.2 and 37.4 months, and frequencies of NPA ≥5 DD of 55.5 and 25.0% (p = 0.015). In the healed group, mean BCVA (logMAR) improved significantly compared to baseline in all the periods until 24 months after treatment initiation and at the last visit (p<0.001). In the refractory group, mean BCVA improved significantly compared to baseline until 12 months after treatment initiation (p<0.05 for all periods), but was not significantly different at 18 or 24 months or at the last visit.

Conclusion

In patients with BRVO-ME treated initially with IVR and later given additional treatments as needed, the healing rate was 84.6%. In eyes that healed within 2 years, BCVA improved relative to baseline throughout 24 months and at the last visit. In refractory eyes, BCVA improved only until 12 months, and thereafter deteriorated to baseline level at the last examination.
Colorectal cancer screening in Semarang, Indonesia: A multicenter primary health care based study
Authors: Purnomo Hery Djagat , Permatadewi Cecilia Oktaria , Prasetyo Agung , Indiarso Didik , Hutami Hesti Triwahyu , Puspasari Dik , Listiana Devia Eka , Suhartono  , Armatussolikha Herna Rizkia , Priyadi Suryanto Setyo , Sadono Sri , Silvina  , Nurhayati  , Samsudin  , Ahnaf  , Hidayanto Muhammad , Nugroho Puriyanto Wahyu , Rakhmawati Nur Dian , Susanto Agus , Setiawan Mukti , Sonny Mochamad
Published: January 2023

Colorectal cancer (CRC) is a major public health problem in Indonesia. It ranks among the top four cancers with high mortality rates. CRC screening is expected to improve early diagnosis that can reduce mortality and morbidity rate. Primary health care-based CRC screening in Indonesia has not yet been performed. This study was conducted to obtain information about prevalence, adenoma detection rate and public compliance for CRC screening in Semarang, Indonesia. This cross-sectional study was done across 10 primary health care centers in Semarang during April—October 2021. The screening method used Immunochromatography Faecal Occult Blood Tests (I-FOBT) as the primary test. Patients with positive I-FOBT result would be referred to Kariadi hospital for colonoscopy and histology examination. A total of 221 patients were included, 66.1% were female, mean age was 59.38 ± 7.48 years. Participation rate was 63%, 37 patients (16.7%) were I-FOBT positive, 26 patients (70.27%) underwent colonoscopy. Colonoscopy compliance rate was 70.27%. The colonoscopy results were haemorrhoid (30.8%), polyps (30.8%), malignancy (19.2%), colitis (7.7%), diverticulosis (7.7%), and normal (3.8%). The adenoma detection rate was 26.9%. BMI abnormality (overweight and obese) (OR 10.968; 95% CI 2.33–51.55) and family history of malignancy (OR 18.800; 95% CI 5.13–68.85) increased the risk of colorectal cancer and adenoma and respectively. The prevalence of I-FOBT positive in primary health care centers is high. The CRC screening program based on primary care should be considered. Public awareness education should be considered to increase colonoscopy compliance.
MMKE: Multi-trial vector-based monkey king evolution algorithm and its applications for engineering optimization problems
Authors: Nadimi-Shahraki Mohammad H. , Taghian Shokooh , Zamani Hoda , Mirjalili Seyedali , Elaziz Mohamed Abd
Published: January 2023

Monkey king evolution (MKE) is a population-based differential evolutionary algorithm in which the single evolution strategy and the control parameter affect the convergence and the balance between exploration and exploitation. Since evolution strategies have a considerable impact on the performance of algorithms, collaborating multiple strategies can significantly enhance the abilities of algorithms. This is our motivation to propose a multi-trial vector-based monkey king evolution algorithm named MMKE. It introduces novel best-history trial vector producer (BTVP) and random trial vector producer (RTVP) that can effectively collaborate with canonical MKE (MKE-TVP) using a multi-trial vector approach to tackle various real-world optimization problems with diverse challenges. It is expected that the proposed MMKE can improve the global search capability, strike a balance between exploration and exploitation, and prevent the original MKE algorithm from converging prematurely during the optimization process. The performance of the MMKE was assessed using CEC 2018 test functions, and the results were compared with eight metaheuristic algorithms. As a result of the experiments, it is demonstrated that the MMKE algorithm is capable of producing competitive and superior results in terms of accuracy and convergence rate in comparison to comparative algorithms. Additionally, the Friedman test was used to examine the gained experimental results statistically, proving that MMKE is significantly superior to comparative algorithms. Furthermore, four real-world engineering design problems and the optimal power flow (OPF) problem for the IEEE 30-bus system are optimized to demonstrate MMKE’s real applicability. The results showed that MMKE can effectively handle the difficulties associated with engineering problems and is able to solve single and multi-objective OPF problems with better solutions than comparative algorithms.
Reseña de Suñol, V.; Miranda, L. R. (eds.). La educación en la filosofía antigua: Ética, retórica y arte en la formación del ciudadano. Buenos Aires, Miño y Dávila.
Authors: Sain Abril
Published: January 2023

Reseña de Suñol, V.; Miranda, L. R. (eds.). La educación en la filosofía antigua: Ética, retórica y arte en la formación del ciudadano. Buenos Aires, Miño y Dávila.
La asociación entre mythos y logos en el Fedón, o sobre cómo alcanzar el logos más difícil de refutar
Authors: Macías Julián
Published: January 2023

En el Fedón, tras ofrecer numerosos argumentos a favor de la inmortalidad del alma, se introduce un mythos acerca de su vida ultraterrena. Dado el tenor del tema en cuestión y las limitaciones humanas para dar con un logos estrictamente verdadero al respecto, Sócrates y sus allegados acuerdan en que se debe buscar el “más difícil de refutar” (85d1) entre los logoi humanos. Este trabajo intenta determinar en qué medida la asociación entre el mito presentado hacia el final del diálogo y los argumentos precedentes contribuye a ese objetivo. En este sentido pretende mostrar, por un lado, que el mito mencionado posee los caracteres atribuidos a la noble mentira en R. II-III  –texto que plantea la necesidad de acudir a relatos que, aunque ficticios, resultan útiles para instaurar la justicia en el alma del auditorio–; y, por el otro, que en virtud de su carácter persuasivo, el mito contribuye a fortalecer el logos hasta allí desarrollado para volverlo lo más irrefutable posible, generando confianza en la necesidad de llevar adelante una vida virtuosa, inclusive en el auditorio que no forma parte del círculo filosófico.
Usos de la refutación y postulación de princípios no hipotéticos en República VI-VII y Sofista
Authors: Álvarez Lucas
Published: January 2023

Siguiendo la propuesta de aquellos intérpretes que se ocupan de señalar continuidades en la metodología empleada por Platón a lo largo de su obra, en este trabajo consideraremos al diálogo Sofista como un punto de confluencia de la refutación de cuño socrático y el método hipotético expuesto en República. Específicamente, intentaremos identificar en aquella obra tardía el punto culminante de dicho método, i.e. el principio no hipotético aludido por Sócrates. Asimismo, esa tarea nos conducirá a pensar, por un lado, en la relación entre Platón y su maestro y, por el otro, en el lugar que le cabe al diálogo Sofista y a su interlocutor principal, el Extranjero de Elea, en el proyecto filosófico de Platón.
Dialectic and Refutation in Plato. On the Role of Refutation in the Search for Truth
Authors: Marcos Graciela
Published: January 2023

While refutation is usually related to Plato's early, Socratic, dialogues, this paper is aimed at exploring the link between refutation and dialectic in some of his middle and late dialogues. First, it argues that refutation assumes a constructive role in the Phaedo, where the best logos is the least refutable, and also in the Republic, where the philosopher is invited to fight his way through all elenchoi. Then, it tries to show that the gymnasia of Prm. 130a ff. is aimed at training young Socrates to come to the aid of the theory he embraces preventing it from being refuted. He should travel and explore all the paths, by assuming a hypothesis as well as the opposite one. This methodology paves the way on which Plato advances in the Sophist, where the antinomic structure of the gymnasia gives way to a “constructive” dialectic in which the aporia is solved and a thesis is established by refutation. The last section of this paper is devoted to analysing Sph. 251c-252e, where the positive and constructive function of the elenchus is especially clear. Plato argues for the symploke eidon by exploring all the hypotheses that are open to the search and refuting those that ultimately represent obstacles to his position. The symploke is the truth which remains when all the hypotheses that contradict it have been refuted. The conclusion is that the elenchus does not disappear but is put at the service of the truth, as an essential part of the method for attaining a positive doctrine.
A note on Aristotle’s Physics I 7, 190a31-34
Authors: Torrente Luca
Published: January 2023

In this note I will defend the correct understanding of a passage (Physics I 7, 190a31-34) that has been largely misunderstood by many modern commentators. The reason for the misleading translations and interpretations can be found in the presence of the problematic expression τόδε τι. In what follows, I will argue that there is no mention in this text of the expression τόδε τι, at least in its technical sense, that can be traced in Aristotle’s philosophy. At the beginning I will give my translation of the passage in question and some information about the context of Physics I 7. Secondly, I will give an account of the language categories of “coming to be” and I will show that Physics I 7, 190a31-34 continues in all respects this linguistic analysis. Finally, I will discuss the work of ancient commentators, which can be read according to my interpretation.
Freud e (a ausência de) Pandora
Authors: Fernandez de Souza Pedro
Published: January 2023

A teoria freudiana da feminilidade é objeto de vários estudos. Tencionamos trazer uma contribuição a esse debate, mas, em vez de abordarmos os textos em que a mulher aparece explicitamente sob a pena freudiana, cuidamos de ler um texto específico de Freud em que ela não aparece, mas deveria aparecer. Trata-se do texto Zur Gewinnung des Feuers, de 1932, em que o pai da psicanálise interpreta o mito de Prometeu. O fato é que, em Hesíodo, a figura da primeira mulher (Pandora) é central, e sem ela o mito não pode ser compreendido em sua inteireza. Na versão de Freud, Pandora inexiste – ela não entra em consideração e não é sequer mencionada. Por isso, em vez do mito de Prometeu e Pandora, temos em Freud o mito de Prometeu – e isso não é sem consequências. Assim, a escrita masculina de Freud jazeria não somente ali onde ele discorre sobre a mulher, mas também onde ela sequer aparece.
A persuasividade dos Asseríveis e dos Argumentos no Estoicismo Antigo
Authors: Dinucci Aldo , Rudolph Kelli
Published: January 2023

Na primeira parte, fazemos um levantamento das ocorrências de pithanon (‘persuasivo’) e termos afins em textos e fragmentos do estoicismo antigo referentes à persuasão de asseríveis e argumentos e em textos e fragmentos em que a lógica estoica se apresenta como ferramenta para evitar a persuasão dos sofismas e o sábio estoico como aquele que capaz de vencer essa persuasão por sua perícia em dialética. Feito isso, consideramos criticamente as teses de Chiaradona, Sedley e Tieleman, para quem Crisipo está interessado em formas extralógicas de discurso. Avaliaremos também a tese de Tieleman segundo a qual Crisipo usa premissas persuasivas para fins construtivos. Em nossas conclusões, descartamos a tese sobre o reconhecimento de verdades extralógicas por Crisipo com base no ideal do sábio estoico. Concluímos que, no estoicismo, (1) pithanon refere-se principalmente a falsas afirmações, argumentos e representações e (2) que o sábio estoico não pode ser persuadido, mas pode persuadir seus ouvintes a fim de preparar suas almas para receber as doutrinas estoicas.
Os limites e possibilidades do jogo didático Kallipolis: o jogo dos governos
Authors: Brinati Furtado Daniela , Da Silva Fortes Fábio , Boechat Marcílio Luca
Published: January 2023

O presente artigo tem como objetivo apresentar as premissas e justificativas que embasam o processo de elaboração e teste do projeto Kallipolis: o jogo dos governos. O projeto consistiu  no desenvolvimento de um jogo que tem como objetivo ilustrar e criar um ambiente no qual um estudante ou interessado em filosofia  descubra e pense a partir das reflexões que Platão apresenta no oitavo livro d’A República. Em vista disso, primeiro discorremos brevemente sobre os fundamentos filosóficos que embasam a concepção do jogo, isto é, como pensamos os seus elementos a partir do livro VIII d’A República de Platão. Em seguida, explicamos a metodologia que propusemos para sua elaboração e testagem e, a partir do que foi observado no processo de realização dos testes, discutimos e apontamos algumas  potencialidades e limitações do jogo em vista de seu uso pelo professor de Filosofia no Ensino Médio.
Baltimore Hebrew Institute Collection: A Jewish Studies Library Re-imaged
Authors: Mael Elaine
Published: January 2023

The Baltimore Hebrew University (BHU) was one of a handful of independent Jewish studies institutions in the United States during the twentieth century. Located in the heart of the Baltimore Jewish community, it grew from a small teachers’ college to a doctoral degree-granting university over the course of its many decades. Several factors, including shifting educational trends, pragmatic economic considerations, and societal expectations altered the academic landscape for this institution; dwindling enrollment forced the once-thriving school to consider options for re-location, re-organization, or closure. A little more than ten years ago, BHU’s programs, faculty, and library were incorporated into a large public university located in nearby Towson, Maryland. As part of this move, the extensive resources of the BHU library were integrated with the much larger library of Towson University (TU), and both collections are now housed in one multi-storied building in the middle of a busy urban university campus. This article addresses the phenomenon of merging two disparate library collections and focuses on both the positive and negative results of consolidating academic libraries of different sizes, content, and cultural heritage. The author was a former librarian at BHU and is currently a librarian at TU.
Jewish Identity and American Acceptance: Welcoming a Firstborn Son in Two Classic Children's Books
Authors: Schneider Emily
Published: January 2023

Jewish-American-themed children’s fiction often includes descriptions of ritual observance. Yet, although ritual circumcision (brit milah, or bris) is a requirement in halacha (Jewish religious law) for all newborn males, this event is virtually absent from Jewish children’s books; the incorporation of a surgical procedure would create obvious narrative difficulties. Sydney Taylor and Sadie Rose Weilerstein, two of the most important twentieth century Jewish-American children’s authors, each wrote a series of books including a newborn son.  Instead of a bris, they both included the less common, nonsurgical ritual of pidyon ha-ben. Thus, they eluded a problematic description, while informing readers about a lesser-known Jewish practice.
History of YIVO’s Prewar Archival Collections from 1925 to 2001
Authors: Halpern Stefanie
Published: January 2023

This article discusses YIVO's prewar collections, their looting and dispersion during the Holocaust, and the various subsequent efforts to recover them. The article includes a brief overview of YIVO's founding and prewar activities; a discussion of the Nazi looting of YIVO's materials during the Holocaust and the heroic efforts by Jews to save these materials during and after the war; YIVO's shift of its headquarters to New York City in 1939–1940; the US Government restitution of materials to YIVO in 1947; and efforts to reclaim additional materials from Lithuania from 1989 to 2001. The article closes with a brief note on YIVO's newly completed Vilna Collections Project to digitally reunite YIVO's pre-war materials in New York City with materials housed in three Lithuanian repositories.
System Architecture for Development and Supervision of Robotic Astronomical Telescope
Authors: Bartkowiak Patryk , Patelski Radosław , Kwiatkowska Marta , Pazderski Dariusz
Published: January 2023

In this paper the novel control and communication scheme designed to ease the development and maintenance of the robotic astronomical telescope device is presented. The proposed solution allows the user to remotely access any signal in the controller of the telescope without imposing any additional overhead during telescope operation. The implemented scheme can be used by both an automated control system and human operators for easy supervision, control, and maintenance of the device.
Nomes de cidades
Authors: Szubris Elisandra Benedita
Published: January 2023

Este estudo pretende demonstrar como a significação de nomes próprios de cidades é afetada por demandas sociais de pertencimento e identificação da população/ administração com as denominações locais. Partimos do ponto de vista de uma perspectiva relacional da linguagem, na Semântica da Enunciação (DIAS 2016, 2018a, 2018b), que assume que há razões enunciativas para as formas da língua se configurarem de tal modo. Como procedimento de análise, organizamos enunciados dispostos em redes enunciativas, tomadas como rede de sentidos, que podem demonstrar a heterogeneidade das relações históricas e sociais que afetam a enunciação desses nomes. Como resultado, mostramos que a significação dos nomes nas formações nominais é ativada por perspectivas de sentidos que se dispersam entre os domínios dos referenciais históricos e das pertinências enunciativas.
Saussure-Benveniste
Authors: Figueiredo Camila Pilotto , Neumann Daiane
Published: January 2023

O presente artigo tem por objetivo discutir acerca dos princípios semiológicos no pensamento de Ferdinand de Saussure e de Émile Benveniste, a fim de compreender de que forma esses princípios se erigem, bem como se inter-relacionam na reflexão de cada um desses linguistas. O ponto de chegada do texto é pensar em como, a partir da análise de tais princípios, pode-se observar a construção de um método de trabalho que caracteriza a linguística saussuriana e a linguística benvenistiana. Ademais, a reflexão aqui empreendida auxilia na compreensão acerca de como os linguistas explicaram o fenômeno da língua, considerando os diferentes pontos de vista, segundo os quais a analisaram.
Mistakes Made by Students While Posing Problems for Equations Containing Algebraic Fractional Expressions
Authors: Tastepe Mehtap , Yanik Huseyin Bahadir
Published: January 2023

Conceptual and procedural knowledge has historically been one of the most discussed subjects in mathematics. In this study, errors in equations including algebraic fractional expressions were examined to determine where ninth-grade students in their comprehension of these expressions. The study employed a holistic multiple-case strategy, and the gathered data were evaluated using content analysis. The results indicate that students made the most mistakes with the definitions of quotient and fraction-whole. Certain sorts of errors in the job are applicable to all fraction interpretations, while others appear to be fraction-specific. Depending on the type of fraction, the mistake circumstances varies.
The Evaluation of the Emergency Remote Teaching Process in Higher Education During Pandemic: TRNC Sample
Authors: Aygun Bahar , Ulak Huseyin , Oznacar Behcet
Published: January 2023

The objective of this study is to define the factors that hinder an effective online education through the opinions of the instructors regarding the transition process to emergency remote education due to the COVID-19 global pandemic as well as to determine the measures that are possible to be taken for the enhancement of the qualities in the field of education. As a qualitative research method, a phenomenological pattern is applied to the study for a detailed version of the teachers’ experiences throughout the study. While composing the study group, the criterion sampling method is applied accordingly. The study group of this work is composed of 13 instructors who are determined from 7 universities which are actively functioning within TRNC. A semi-structured interview form with four questions, observation, and document analysis are used to collect data in order to increase the credibility of this study and to provide a thorough review of the issue. The outcome of this work indicates that problems occurred due to technical substructure inadequacies, thus the instructors encountered problems with the lessons that required application. It is found that the instructors need training for technology utilisation in teaching. It is considered that this work is to contribute to higher education institutions for the measurements to be taken for the betterment of the emergency remote teaching process and to enhance the quality of the teaching.
The Effects of Movie-Enriched Extensive Reading on TOEFL IBT Vocabulary Expansion and TOEFL IBT Speaking Section Score
Authors: Abdulrahman Soran Abubakr , Kara Saban
Published: January 2023

A wealth of research has been conducted to compare extensive and intensive reading thanks to their increasing popularity in educational settings globally. However, only a limited number of studies have been conducted to measure the effects of movie-enriched extensive reading activities. To this aim, the present study was undertaken to investigate the effects of movie enriched extensive reading on freshman students` TOEFL IBT vocabulary expansion and TOEFL IBT speaking section scores. In this regard, 40 students studying at an international private university in Erbil, Iraq was divided into two groups using a stratified random sampling method. Control group students (N=20) read and analyzed six graded readers by employing intensive reading, whereas experimental group students (N=20) actively participated in reading prominent novels and watching movie versions of them. A mixed methods design was employed to gather qualitative and quantitative data, respectively, so they were utilized to make better interpretations. Quantitative data were collected through 2 vocabulary and speaking exams related to TOEFL IBT as pre-test and post-test. Additionally, qualitative data were collected through interviews. Results of the independent samples t-test revealed that experimental group students` speaking and vocabulary scores increased significantly, whereas they were not significant enough in the control group. Moreover, students` attitudes towards reading novels and watching movies changed positively based on the interview transcripts. In light of the findings, this study may have some implications for researchers, educators, and authorities seeking opportunities to integrate extensive reading into the curriculum.
Thermal Characteristics of Coconut Shells as Boiler Fuel
Authors: Yulianto Muhamad , Hartulistiyoso Edy , Nelwan Leopold Oscar , Agustina Sri Endah , Gupta Chandra
Published: January 2023

Agricultural waste products, such as wood, rice husk, corn waste, and coconut shells, are abundantly available  and can potentially be used as an energy source, particularly  for direct combustion in boilers. Because coconut production increases every year, it would be useful to find an alternative use for coconut shells, which are a type of coconut waste. As coconut shells can be used as fuel in boilers, the aim of this study was to evaluate the thermal characteristics of coconut shells in this regard. This study used experimental results to evaluate the performance of a boiler when coconut shells were used as solid fuel. The variations in feed rate were 5, 7.5, and 10 kg/h, and the water flow rates varied between 1 litre per minute (lpm), 2 lpm, and  3 lpm. Temperature data were collected every second via data acquisition , and the mass flow rate of the flue gas was collected every 5 min using a pitot tube equation. One of the parameters evaluated in determining the success of coconut shells as boiler fuel is the thermal efficiency of the boiler. The results showed that the maximum thermal efficiency reached approximately 62.04%, and the maximum flue gas temperature was approximately 500 ℃ for a biomass mass flow rate of 7.5 kg/h. The maximum water temperature of the boiler was 99 ℃, which was reached at a minimum water flow rate of 1 lpm. The results showed that coconut shells are suitable for use as boiler fuel.