bluuebunny/crossref_metadata_2025 huggingface dataset:
IDENTIFIKASI PENGENALAN WAJAH UNTUK SISTEM PRESENSI MENGGUNAKAN METODE KNN (K-NEAREST NEIGHBOR)
Authors:   Telkom University, Yulianti Dwi , Triastomoro Iwan ,   Universitas Telkom, Sa’idah Sofia ,   Universitas Telkom
Published: July 2022

Attendance is an activity that is so important and cannot be separated from a teaching and learning activity to calculate and see student attendance. In this Final Project, research on the automatic attendance system is carried out through facial recognition identification (face recognition) using a webcam as a system input, then the resulting image capture results from each image will be processed through feature extraction using the LBPH (Local Binary Pattern Histogram) method and classification with the KNN (K-Nearest Neighbor) method and the help of OpenCV library-based Python software. The research in this Final Project obtained an average accuracy value in facial recognition using LBPH (Local Binary Pattern Histogram) of 93.9%, with an average FAR value of 4.66% and an average FRR value of 1.33%. For the classification of KNN (K-Nearest Neighbor) using Euclidean Distance when k = 1 obtained an accuracy of 100% with a computation time of 34 ms, at the time of k = 3 an accuracy of 98% with a computation time of 37 ms was obtained and at the time of k = 5 an accuracy of 88% with a computation time of 42 ms.
ANALISIS USER EXPERIENCE MAHASISWA TERHADAP SISTEM INFORMASI SIASAT MENGGUNAKAN USER EXPERIENCE QUESTIONNAIRE
Authors:   Universitas Kristen Satya Wacana, Ratmoko Eirene , Pakereng Magdalena ,   Universitas Kristen Satya Wacana
Published: July 2022

The current development of information systems needs to be reviewed whether the quality of the information system is able to answer the needs of its users. One of the information system technologies is the Satya Wacana Academic Information System (SIASAT), which until now there has been no research that discusses the level of user experience satisfaction when using the SIASAT. Therefore, an analysis of the student SIASAT user experience was carried out using the User Experience Questionnaire (UEQ) method. UEQ is a measurement measured from aspects of its use and aspects of experience including compressive impressions with a questionnaire scale. UEQ has 26 questions covering 6 scales, including the attractiveness, perspicuity, efficiency, dependability, stimulation, and novelty scales. The final result of the study concluded that for the attractiveness scale, the evaluation value was normal and the benchmark was Bad. The perspicuity scale gets a positive evaluation value and the benchmark is Above Average. The efficiency scale gets a normal evaluation value and a Bad benchmark. The dependability scale gets normal evaluation values and Bad benchmark. The stimulation scale gets a normal evaluation value and a Bad benchmark. The novelty scale gets a negative evaluation score and the benchmark is Bad.
ANALISIS TINGKAT KEPUASAN PELANGGAN PADA RUDANG HOTEL BERASTAGI MENGGUNAKAN METODE CUSTOMER SATISFACTION INDEX (CSI)
Authors: Harmaja Okta Jaya , Purba Windania , Siregar Maxwell Paulus , Manurung Henry Triadi , Sirait Fransisco Andreas
Published: July 2022

Service quality is very important in the hospitality industry because of the great competition in the industry. Therefore, the hotel must provide the best service to its guests. This study was conducted to see how the quality of service at the Rudang Berastagi hotel to guests using the CSI method to calculate the level of customer satisfaction at the Rudang Berastagi Hotel as an evaluation material to improve hotel services in the future. Data processing in this study was carried out using the Python programming language through Google Colab. Based on the calculation of guest satisfaction at Rudang Berastagi Hotel through a questionnaire of 110 respondents, it was found that the guests were satisfied with the services provided by Rudang Berastagi Hotel with a satisfaction level of 78.4% using the Customer Satisfication Index (CSI) method. According to the questionnaires that have been distributed, it is concluded that question number 1 with the contents of the questions having a complete, comfortable, clean, and well-organized room interior gets the highest mean value of 4.27%.
Service Quality and Customer Satisfaction with Complaint Management in The Nigerian Telecommunication Industry
Authors: Osayande Festus , Ogunode Philips Olatunde , Adejimi Seun Oyebola
Published: July 2022

This study examined “service quality and customer satisfaction with complaint management in the Nigeria’s telecommunication industry”. Specifically, it aimed at finding out the extent to which customers are satisfied or dissatisfied with the quality of services provided by mobile telecommunication operators and to investigate the extent to which dissatisfied customers complain regarding the services of their mobile telecommunication providers. The research instrument (questionnaire) was administered on a total of five hundred (500) randomly selected customers of MTN, GLOBACOM, Airtel, 9mobile, and Multi-links. Data obtained were coded and analyzed using descriptive and inferential statistics such as the frequency tables, One-way Analysis of Variance (ANOVA) and the ‘t’ test for the difference between two population means. The sampling technique used in the study was the multi-stage cluster sampling. The findings from the research revealed that the proportion of customers who are satisfied with the services provided by mobile telecommunication firms is the same as those that are dissatisfied. It was thus recommended that telecommunication service providers should take bold steps to improve on their services in order to enhance customer satisfaction as this is key to achieving growth and profitability.
Interactive Forms in Training Sessions as a Factor in Motivating Entrepreneurship Students to Study the Culture of Speech
Authors:   Synergy University, Ushakova Elena V. , Sycheva Elena O. ,   Synergy University
Published: July 2022

The article considers interactive forms of organizing training sessions in the discipline “Russian language and culture of speech” as part of professionally oriented training of the students of “Entrepreneurship” direction. The article substantiates the necessity of using an activity approach which implies taking into account the communication needs of students and the specifics of their future professional activities. The main difficulties faced by students and teachers in the process of mastering and teaching the discipline are analyzed. It is argued that the condition for the effective formation of communication competence in all its aspects is a practice-oriented approach to the organization of classes that can motivate students to study the course. The article discusses the practice of using interactive forms of teaching in the classroom in the discipline “Russian language and culture of speech”. The paper demonstrates the tasks developed by the authors and outlines the goals and stages of case- studies and didactic games aimed at developing communication skills. The analysis of the use of interactive forms of training was carried out, it was revealed that besides helping students to master the culture of speech they also contribute to the development of team interaction skills, help to bridge the gap between theoretical knowledge and real communication situations, stimulate creative and cognitive activity, and increase motivation for the study of the culture of speech. At the same time, communication skills, speech norms are not learned in isolation, but in the context of certain situations of business communication that are important for the future professional activity of an entrepreneur. Prospects for further research are outlined – the development of teaching technologies that contribute to the formation of a students’ sustainable interest in the discipline and, as a result, the successful mastery of business communication skills in oral and written forms.
Quantitative Characterization of Magnetic Flux Rope Properties for Two Solar Eruption Events
Authors: He Wen , Hu Qiang , Jiang Chaowei , Qiu Jiong , Prasad Avijeet
Published: July 2022

In order to bridge the gap between heliospheric and solar observations of coronal mass ejections (CMEs), one of the key steps is to improve the understanding of their corresponding magnetic structures like the magnetic flux ropes (MFRs). But it remains a challenge to confirm the existence of a coherent MFR before or upon the CME eruption on the Sun and to quantitatively characterize the CME-MFR due to the lack of direct magnetic field measurements in the corona. In this study, we investigate MFR structures originating from two active regions (ARs), AR 11719 and AR 12158, and estimate their magnetic properties quantitatively. We perform nonlinear force-free field extrapolations with preprocessed photospheric vector magnetograms. In addition, remote-sensing observations are employed to find indirect evidence of MFRs on the Sun and to analyze the time evolution of magnetic reconnection flux associated with the flare ribbons during the eruption. A coherent “preexisting” MFR structure prior to the flare eruption is identified quantitatively for one event from the combined analysis of the extrapolation and observation. Then the characteristics of MFRs for two events on the Sun before and during the eruption forming the CME-MFR, including the axial magnetic flux, field line twist, and reconnection flux, are estimated and compared with the corresponding in situ modeling results. We find that the magnetic reconnection associated with the accompanying flares for both events injects a significant amount of flux into the erupted CME-MFRs.
SNIa Cosmology Analysis Results from Simulated LSST Images: From Difference Imaging to Constraints on Dark Energy
Authors: Sánchez B. O. , Kessler R. , Scolnic D. , Armstrong R. , Biswas R. , Bogart J. , Chiang J. , Cohen-Tanugi J. , Fouchez D. , Gris Ph. , Heitmann K. , Hložek R. , Jha S. , Kelly H. , Liu S. , Narayan G. , Racine B. , Rykoff E. , Sullivan M. , Walter C. W. , Wood-Vasey W. M. ,   The LSST Dark Energy Science Collaboration (DESC)
Published: July 2022

The Vera Rubin Observatory Legacy Survey of Space and Time (LSST) is expected to process ∼106 transient detections per night. For precision measurements of cosmological parameters and rates, it is critical to understand the detection efficiency, magnitude limits, artifact contamination levels, and biases in the selection and photometry. Here we rigorously test the LSST Difference Image Analysis (DIA) pipeline using simulated images from the Rubin Observatory LSST Dark Energy Science Collaboration Data Challenge (DC2) simulation for the Wide-Fast-Deep survey area. DC2 is the first large-scale (300 deg2) image simulation of a transient survey that includes realistic cadence, variable observing conditions, and CCD image artifacts. We analyze ∼15 deg2 of DC2 over a 5 yr time span in which artificial point sources from Type Ia supernova (SNIa) light curves have been overlaid onto the images. The magnitude limits per filter are u = 23.66 mag, g = 24.69 mag, r = 24.06 mag, i = 23.45 mag, z = 22.54 mag, and y = 21.62 mag. The artifact contamination levels are ∼90% of all detections, corresponding to ∼1000 artifacts deg–2 in g band, and falling to 300 deg–2 in y band. The photometry has biases <1% for magnitudes 19.5 < m < 23. Our DIA performance on simulated images is similar to that of the Dark Energy Survey difference-imaging pipeline on real images. We also characterize DC2 image properties to produce catalog-level simulations needed for distance bias corrections. We find good agreement between DC2 data and simulations for distributions of signal-to-noise ratio, redshift, and fitted light-curve properties. Applying a realistic SNIa cosmology analysis for redshifts z < 1, we recover the input cosmology parameters to within statistical uncertainties.
A VLA View of the Flared, Asymmetric Disk around the Class 0 Protostar L1527 IRS
Authors: Sheehan Patrick D. , Tobin John J. , Li Zhi-Yun , van ’t Hoff Merel L. R. , Jørgensen Jes K. , Kwon Woojin , Looney Leslie W. , Ohashi Nagayoshi , Takakuwa Shigehisa , Williams Jonathan P. , Aso Yusuke , Gavino Sacha , Gregorio-Monsalvo Itziar de , Han Ilseung , Lee Chang Won , Plunkett Adele , Sharma Rajeeb , Aikawa Yuri , Lai Shih-Ping , Lee Jeong-Eun , Lin Zhe-Yu Daniel , Saigo Kazuya , Tomida Kengo , Yen Hsi-Wei
Published: July 2022

We present high-resolution Karl G. Jansky Very Large Array (VLA) observations of the protostar L1527 IRS at 7 mm, 1.3 cm, and 2 cm wavelengths. We detect the edge-on dust disk at all three wavelengths and find that it is asymmetric, with the southern side of the disk brighter than the northern side. We confirm this asymmetry through analytic modeling and also find that the disk is flared at 7 mm. We test the data against models including gap features in the intensity profile, and though we cannot rule such models out, they do not provide a statistically significant improvement in the quality of fit to the data. From these fits, we can, however, place constraints on allowed properties of any gaps that could be present in the true, underlying intensity profile. The physical nature of the asymmetry is difficult to associate with physical features owing to the edge-on nature of the disk, but it could be related to spiral arms or asymmetries seen in other imaging of more face-on disks.
Radio Detection of an Elusive Millisecond Pulsar in the Globular Cluster NGC 6397
Authors: Zhang Lei , Ridolfi Alessandro , Blumer Harsha , Freire Paulo C. C. , Manchester Richard N. , McLaughlin Maura , Kremer Kyle , Cameron Andrew D. , Zhang Zhiyu , Behrend Jan , Burgay Marta , Buchner Sarah , Champion David J. , Chen Weiwei , Dai Shi , Feng Yi , Fu Xiaoting , Guo Meng , Hobbs George , Keane Evan F. , Kramer Michael , Levin Lina , Li Xiangdong , Ni Mengmeng , Pan Jingshan , Padmanabh Prajwal V. , Possenti Andrea , Ransom Scott M. , Tsai Chao-Wei , Venkatraman Krishnan Vivek , Wang Pei , Zhang Jie , Zhi Qijun , Zhang Yongkun , Li Di
Published: July 2022

We report the discovery of a new 5.78 ms period millisecond pulsar (MSP), PSR J1740−5340B (NGC 6397B), in an eclipsing binary system discovered with the Parkes radio telescope (now also known as Murriyang) in Australia and confirmed with the MeerKAT radio telescope in South Africa. The measured orbital period, 1.97 days, is the longest among all eclipsing binaries in globular clusters (GCs) and consistent with that of the coincident X-ray source U18, previously suggested to be a “hidden MSP.” Our XMM-Newton observations during NGC 6397B’s radio-quiescent epochs detected no X-ray flares. NGC 6397B is either a transitional MSP or an eclipsing binary in its initial stage of mass transfer after the companion star left the main sequence. The discovery of NGC 6397B potentially reveals a subgroup of extremely faint and heavily obscured binary pulsars, thus providing a plausible explanation for the apparent dearth of binary neutron stars in core-collapsed GCs as well as a critical constraint on the evolution of GCs.
Low-speed Impacts into Ice–Dust Granular Mixtures
Authors: Brisset Julie , Cox Christopher , Metzger Jessica , Miletich Thomas , Mohammed Nadia , Rascon Allison , Forczyk Laura , Dove Adrienne , Colwell Joshua
Published: July 2022

We present the results of a series of laboratory low-speed impacts (< 4 m s−1) of centimeter-sized spherical projectiles into simulated dry and icy regolith samples. The target material was comprised of JSC-1 (Johnson Space Center) lunar simulant grains in the size range 100–250 μm, mixed with similar-sized water ice grains. Impacts were performed under vacuum, either at room temperature for JSC-1 samples or at cryogenic temperatures (<150 K) for icy mixtures. We measured the ejecta masses from a collection plate and impact crater dimensions from post-impact crater photographs. We find that both the ejecta masses and crater diameters followed trends predicted by established scaling laws, albeit with different fitting parameters, and we were able to fit a strength regime π scaling to our measured crater diameters. The water ice in our target material took two forms: grains mixed with the regolith grains and frost from air condensation coating regolith grains. In both cases, the presence of water ice in the sample led to lower ejected masses and smaller crater sizes. In addition, our measured crater sizes were several orders of magnitude larger than expected for impacts into solid rock or water ice. Using our measured scaling parameters, we applied our findings to a planetary context for the study of secondary craters on icy moons, as well as eroding collisions occurring in Saturn’s rings. We found that the deviation of our measurements from solid targets and from commonly used scaling parameters allowed us to reconcile our measurements with the models in both cases.
Ejecta Formation, Early Collisional Processes, and Dynamical Evolution after the DART Impact on Dimorphos
Authors: Ferrari Fabio , Raducan Sabina D. , Soldini Stefania , Jutzi Martin
Published: July 2022

NASA’s DART spacecraft is planned to reach and impact asteroid Dimorphos, the small moon of binary asteroid (65803) Didymos, at a velocity of 6 km s−1 in late 2022 September. DART will be the first mission to test the “kinetic impactor” technique, aimed at deflecting the orbital path of a potentially hazardous asteroid. The success and effectiveness of this technique resides in the efficiency of momentum exchange between the spacecraft and the impacted target. This depends on many factors, including the cratering process, the formation of ejecta, and their fate, as they remain in the system or escape from it, carrying momentum away. Here we provide an overview of the cratering process, including ejecta formation and their subsequent dynamical evolution. We use different methodologies to model the physics of the problem, including smoothed particle hydrodynamics to model the cratering and ejecta formation process after the hypervelocity impact, N-body granular simulations to model early collisional processes between ejecta fragments right after cratering, and high-fidelity planetary propagation to model the dynamical evolution of ejecta during their purely ballistic phase. We highlight the key features of each phase and their role in defining the dynamical fate of ejecta. We investigate the effect of surface cohesion in the impacted target and identify the qualitative behavior of ejecta particles as a function of the key parameters of the problem. We provide quantitative estimates for the specific case study related to the DART–Dimorphos scenario and a selected range of target properties.
In vitro antifungal activity of Morinda citrifolia (noni) extract against Candida albicans
Authors: Miguel Camila Botelho , Oliveira Renato Ventresqui , Rodrigues Wellington Francisco , Tavares Gustavo , Joinhas Sandro Calderano , Gomes da Cruz Maria Auxiliadora , Rezende Célia Fabrício de Souza , Alvarenga Andréa Maria Pasquini , Mateus Weder da Silva , Silveira Marcia Laina , Bucek Elizabeth Uber , Bovi Weslley Guimarães , De Oliveira Carlo José Freire , Da Costa Thiago Alvares , Lazo-Chica Javier Emilio , Paulino Tony de Paiva
Published: July 2022

Introduction: Candida albicans is the main agent of the most common fungal infection, Candidiasis. It is an opportunistic and dangerous pathogen, especially in immunosuppressed patients. The biological properties of Morinda citrifolia (noni) make it a potent antifungal. In this study, antifungal effect of M. citrifolia was evaluated to verify its effect on human cells.

Methodology: Extract of M. citrifolia was used against strains of C. albicans (cEC 1291). Glucose consumption in C. albicans biofilm was determined at different concentrations of M. citrifolia, and germ tube formation was evaluated in the presence and absence of M. citrifolia. Fungicidal activity was determined by the kinetics of fungal cell death. THP-1 and HeLa cells were used for cell viability and apoptosis, and cell proliferation assays, respectively.

Results: Cells treated with M. citrifolia maintained higher concentration of glucose than the control group (p < 0.05). Germ tube formation was inhibited in cells treated with M. citrifolia (p < 0.05). M. citrifolia exerted a cytotoxic effect on C. albicans cells with 99.99% lethality after 6.82 h (1:1 and 1:2), and reduced the viability of THP-1 cells by 25% and 67% after 12 and 36 h, respectively. Annexin V expression in THP-1 increased in groups that received higher concentrations of M. citrifolia (p < 0.05), reducing the proliferation of THP-1 and HeLa cells (2.8-fold). A greater cytotoxic effect was observed in fungal cells.

Conclusions: These results indicate that M. citrifolia exerts biological activity against C. albicans and reduces the viability and proliferation of human cells.
Relationship between emotional expressions and lifestyle changes among university students during COVID-19 lockdown in Lebanon
Authors: Ibrahim José-Noel , Fares Chirine , Bader Robert
Published: July 2022

Introduction: Emotional expressivity plays an important role in terms of communication and interpersonal relationships in the context of society. Our research aims at assessing the perception of emotional expressivity and its association with lifestyle changes during COVID-19 lockdown among university students in Lebanon.

Methodology: A total of 742 participants completed an anonymous online questionnaire including socio-demographic characteristics, lifestyle habits, and emotional expression evaluated through the Berkeley Expressivity Questionnaire (BEQ). Participants also reported their perception of the relationship between emotional expressivity and lifestyle changes experienced during lockdown.

Results: The expression of positive emotions was decreased among students who have a weight loss from decreased eating during lockdown. Moreover, significantly lower negative emotions and increased positive emotions were found to be associated respectively with the increase in quality and quantity of distance learning, which emphasizes the psychological investment in education. In terms of extensive time spent on TV and social media, results point towards increased emotional expressivity, particularly positive emotions and impulse facets. Finally, changes in social interaction during this period impacted all facets of emotional expressivity.

Conclusions: In the context of lockdown due to the pandemic, emotional aspects were associated by university students with lifestyle changes. Our research highlights the beneficial role of social networking, distance learning, physical activity, and well-balanced nutrition on emotional regulation in this particularly stressful situation, thus the importance of a global approach to emotional expressivity including the social aspects and biological ones.
Correlation between Level of Serum Transaminases and Duration of Antiepileptic Drugs in Epilepsy Children in Sanglah Hospital
Authors: Suwarba I Gusti Ngurah Made , Santhi Anak Agung Ratna Purnama , Mahalini Dewi Sutriani
Published: July 2022

BACKGROUND: Some antiepileptic drugs (AEDs), particularly sodium valproate, phenytoin, phenobarbital, and carbamazepine induce and increase production of hepatic enzymes. The adverse metabolic effects of AEDs treatments have become main concern, however data about evaluation of serum transaminases and duration of AEDs in Indonesia still limited. AIM: The aim of the study was to investigate correlation of AEDs and serum transaminases in children with epilepsy. METHODS: This cross-sectional research was conducted in pediatric neurology outpatient clinic in Sanglah Hospital. The target was children with epilepsy who had taken AEDs for at least 6 months. Data were collected from January 2020 to the number of samples were achieved. The exclusion criteria were concomitant liver disease, taking drugs which induce elevated serum transaminase or alcohol abuse. Data including age, gender, nutritional status, type, and duration of AEDs were obtained from medical record. Correlation was analyzed by Pearson’s or Spearman’s correlation, p < 0.05 was considered significant. RESULTS: Total 148 epileptic children enrolled in this study. Aspartate transaminase (AST) and alanine aminotransferase (ALT) level were highest in the group receiving combination therapy (34.37 ± 24.9 U/L and 35.96 ± 23.3 U/L). There was a significant negative correlation between duration of carbamazepine and AST (r = –0.723, p = 0.0001) and ALT (r = –0.457, p = 0.009), as well as duration of valproic acid with AST and ALT (r = –0.689 and –0.677, p = 0.0001). Duration of phenobarbital administration was positively correlated with AST and ALT (r = 0.546 and 0.425, p = 0.0001). Combination therapy also had positive correlation with AST and ALT (r = 0.815 and 0.781, p = 0.0001, respectively). CONCLUSION: Duration administration of carbamazepine and valproic acid had negative correlation with AST and ALT; however, phenobarbital and combination therapy were positively correlated with AST and ALT.
Expanded range of eight orchid bee species (Hymenoptera, Apidae, Euglossini) in Costa Rica
Authors: McDonald Elise , Podesta Jacob , Fortuin Christine , Gandhi Kamal
Published: July 2022

The Monteverde region of Costa Rica is a hotspot of endemism and biodiversity. The region is, however, disturbed by human activities such as agriculture and urbanisation. This study provides a list of orchid bees (Hymenoptera: Euglossini) compiled from field surveys conducted during January-October 2019 in the premontane wet forest of San Luis, Monteverde, Costa Rica. We collected 36 species of Euglossine bees across four genera. We provide new geographic distribution and elevation data for eight species in two genera. Due to their critical role in the pollination of orchids and other plants, the distribution and abundance of Euglossine bees has relevance to plant biodiversity and conservation efforts. This is especially important in a region with a high diversity of difficult-to-study epiphytic orchids, such as in the Monteverde region.

A total of 2,742 Euglossine male individuals across four genera (Eufriesea,Eulaema,EuglossaandExaerete) were collected in this study. Updated geographic distributions and elevation ranges were established for eight species of Euglossini in two genera:Eufriesea mussitans(Fabricius, 1787),Eufriesea rufocauda(Kimsey, 1977),Euglossa dodsoni(Moure, 1965),Euglossa dressleri(Moure, 1968),Euglossa hansoni(Moure, 1965),Euglossa ignita(Smith, 1874),Euglossa tridentata(Moure, 1970) andEuglossa turbinifex(Dressler, 1978). These are the first recorded occurrences of these species in the Monteverde region of Costa Rica, according to the Global Biodiversity Information Facility (GBIF) database (https://doi.org/10.15468/9f9kgp). This study also established expanded elevation ranges forEuglossa allosticta,Euglossa bursigera,Euglossa mixta,Euglossa heterostictaandEuglossa maculabris, though these five species have been previously recorded in the Monteverde region and, thus, are not described in detail here. Additionally, our capture of 123Eufriesea concavaindividuals is significant, as it indicates its abundance in this region. Prior to this study, there was a single record ofE. concavain the Monteverde region, documented in 1993.
Affective Knowledge-enhanced Emotion Detection in Arabic Language: A Comparative Study
Authors: Serrano-Guerrero Jesus , Alshouha Bashar , Romero Francisco P. , Olivas Jose A.
Published: July 2022

Online opinions/reviews contain a lot of sentiments and emotions that can be very useful, especially, for Internet suppliers which can know whether their services/products are meeting their customers’ expectations or not. To detect these sentiments and emotions, most applications resort to lexicon-based approaches. The major issue here is that most well-known emotion lexicons have been developed for English language; nevertheless, in other languages such as Arabic, there are fewer available tools, and many times, the quality of them is poor.

The goal of this study is to compare the performance of two different types of algorithms, shallow machine learning-based and deep learning-based, when dealing with emotion detection in Arabic language. To improve the performance of the algorithms, two lexicons, which were originally developed in other languages and translated into Arabic language, have been used to add emotional features to different information models used to represent opinions. All approaches have been tested using the dataset SemEval 2018 Task 1: Affect in Tweets and the dataset LAMA+DINA. The semantic approaches outperform the classical algorithms, that is, the information provided by the lexicons clearly improves the results of the algorithms. Particularly, the BiLSTM algorithm outperforms the rest of the algorithms using word2vec. On the contrary to other languages, the best results were obtained using the NRC lexicon.
Selaginella wuyishanensis (sect. ﻿Tetragonostachyae, Selaginellaceae), a new species from East China and its phylogenetic position based on molecular data
Authors: Xu Ke-Wang , Chen Shui-Fei , Song Qiang , Zheng Xiao , Li Meng , Fang Yan-Ming , Wei Hong-Jin , Ding Hui , Zhou Xin-Mao , Duan Yi-Fan
Published: July 2022

A new spikemoss species, Selaginella wuyishanensis, is described and illustrated based on materials collected from Fujian Province, East China. The new species can be distinguished from S. lutchuensis Koidzumi and S. albociliata P. S. Wang by its leaves with extremely long cilia (up to 8 mm) and distinctly white margins, ovate ventral sporophylls, and sporophyll-pteryx completely inverted on dorsal sporophylls. In the present work, a molecular phylogeny, taxonomic description, distribution information, line drawing, and photographs of this new species are presented. A morphological comparison is also given to distinguish it from morphologically similar species in Selaginella sect. Tetragonostachyae (Hook. & Grev.) Hieron. & Sadeb.
Numerical solution of fractional variational and optimal control problems via fractional-order Chelyshkov functions
Authors: Ahmed A. I. , Al-Sharif M. S. , Salim M. S. , Al-Ahmary T. A.
Published: July 2022

In this paper, we present a new numerical method based on the fractional-order Chelyshkov functions (FCHFs) for solving fractional variational problems (FVPs) and fractional optimal control problems (FOCPs). The fractional derivatives are considered in the Caputo sense. The operational matrix of fractional integral for FCHFs, together with the Lagrange multiplier method, are used to reduce the fractional optimization problem into a system of algebraic equations. Some results concerning the approximation errors are discussed and the convergence of the presented method is also demonstrated. The performance of the introduced method is tested through several examples. Some comparisons with recent numerical methods are introduced to show the accuracy and effectiveness of the presented method.
Jesús y María entre el islam y el cristianismo en las inscripciones árabes de la Casa del Conde de Toledo
Authors: Marquer Julie
Published: July 2022

En este artículo nos proponemos destacar la originalidad de las inscripciones árabes que adornan el arco de la llamada Casa del Conde de Toledo, fechadas en el siglo XV. La principal inscripción del arco es una oración a Santa María escrita en aljamiado, lengua romance con grafía árabe muy elaborada, y las secundarias, más legibles, repiten ora en aljamiado, ora en árabe los nombres de Jesús y de Santa María. Además, en el segmento en árabe, Jesús está nombrado en su versión musulmana, ʿĪsā, y se insiste en su filiación con María como una reminiscencia de uno de los principales desacuerdos entre islam y cristianismo en torno a la figura de Jesús.
A partir de una lectura paralela a la de Rodrigo Amador de los Ríos, proponemos un análisis epigráfico y lingüístico, antes de estudiar el contenido y el sentido de los textos. Analizando el contexto, la relación entre artesano y comitente, y comparando con otras inscripciones mudéjares que plantean problemáticas similares, acabamos por considerar estas inscripciones como un reflejo de la voluntad por parte de los comitentes cristianos de sintetizar varias tradiciones religiosas y culturales. No pensamos sin embargo que haya que entender esta conciliación entre islam y cristianismo como la expresión de una apertura hacia creencias ajenas sino más bien como un intento hegemónico de abarcar a todos debajo del poder cristiano.
La recepción de la documentación árabe en los cartularios del Archivo Capitular de Toledo: traducciones y adaptaciones de cartas árabes entre el latín y el romance
Authors: Miguel-Franco Ruth
Published: July 2022

El objetivo de este trabajo es estudiar los modos en los que la documentación árabe emitida por las notarías mozárabes de Toledo es incluida en dos cartularios elaborados en el scriptorium catedralicio: Toledo, Biblioteca Capitular, 42-20 (1190) y Madrid, Archivo Histórico Nacional, 987B (1257 p. q.). Estos volúmenes tienen en común que no copian las cartas árabes de forma literal, sino que las traducen y resumen. No obstante, también presentan diferencias importantes: mientras que Toledo, Biblioteca Capitular, 42-20 copia algunas firmas árabes, en Madrid, Archivo Histórico Nacional, 987B el árabe está completamente ausente. Además, los volúmenes también se diferencian en la colocación de los resúmenes del árabe en el conjunto de documentos copiados y, sobre todo, en la lengua meta de las traducciones: latín en el primer caso, romance en el segundo. De este modo, el análisis de los mecanismos de recepción del árabe en estos dos cartularios nos proporciona información sobre la convivencia de lenguas en la Toledo medieval y documenta los cambios en el panorama lingüístico en el periodo que medió entre la elaboración de los dos cartularios.
Critical Commitments to Partnership in Global Service-Learning
Authors: Long Kaitlin , Benavides Mac , Gott Trisha , Azubuike Chibuzor
Published: July 2022

In addition to many global disruptions due to the COVID-19 pandemic, institutions of higher education within the United States were forced to move classes online, and put a pause to many initiatives. Areas that were particularly affected by the pandemic were education abroad and global service-learning (GSL) programs. As GSL programs resume operations with partners around the world, there exists an opportunity to redefine partnerships with the goal of reciprocity at the center (Bartleet et al., 2019; Brown et al., 2016; Grain et al., 2019). In this study, authors conducted interviews with partner organizations in a GSL program at a large, public university in the Midwest. Through this work, the authors developed a set of guiding questions to help GSL scholar-practitioners relaunch their programs with the goal of reciprocal partnerships.
La monetazione lombarda dalla fine del duecento al 1378
Authors: Travaini Lucia
Published: July 2022

Il testo prende in esame la monetazione lombarda tra fine XIII secolo e 1378, evidenziando sostanziali cambiamenti monetari; specialmente a Milano intorno alla metà del Trecento si osserva una notevole stabilità monetaria in controtendenza rispetto ad altri Stati, segno di una grande capacità di visione da parte delle autorità milanesi.

The paper presents the Lombard coinages between the late thirteenth century and 1378, pointing to the many monetary changes of the period. Particularly for Milan, unlike other States, one can observe in the mid fourteenth century an important monetary stability fruit of a competent vision on the part of the Milanese authorities.
«Pace, pace, morte ai dazi e alle gabelle!»
Authors: Grillo Paolo
Published: July 2022

Il contributo mostra che anche se per oltre un quarto di secolo, fra il 1311 e il 1338, la Lombardia fu scossa da scontri civili e da grandi conflitti internazionali, non bisogna sopravvalutarne la capacità distruttiva, dato che in realtà gran parte delle paghe dei mercenari e delle ricchezze saccheggiate veniva reintrodotta nei circuiti economici locali. Furono più gravi, probabilmente, i danni indiretti, quali l’aumento delle tasse o l’insicurezza dei commerci, ma dopo il precoce consolidamento del dominio sovracittadino di Azzone Visconti fra il 1329 e il 1339, la regione conobbe un periodo di relativa pace, che permise di recuperare rapidamente le perdite subite negli anni precedenti e di evitarne eventuali conseguenze a lungo termine.
Il mercato internazionale dei panni e le industrie tessili Lombarde nel Trecento
Authors: Poloni Alma
Published: July 2022

Questo articolo è un tentativo di delineare, nei suoi snodi principali, l’evoluzione delle industrie tessili delle città dell’attuale Lombardia nel corso del Trecento. La prima parte ricostruisce le caratteristiche del mercato internazionale dei panni di lana nella seconda metà del secolo, in una fase cioè per la quale sono disponibili fonti, soprattutto toscane, di eccezionale valore informativo. Questa indagine consente di ridimensionare l’idea, proposta in vari contributi da John H. Munro e per lo più accettata dalla storiografia, che nel corso del Trecento le industrie laniere europee si siano riorientate verso la lavorazione di tessuti di qualità elevata, o addirittura di lusso. In realtà il settore di mercato nel quale si concentravano la maggior parte delle produzioni europee era quello dei panni di qualità media o medio-bassa. Milano e Como rappresentano però, insieme a Firenze, le uniche eccezioni italiane a questo trend generale. Le due città lombarde si specializzarono in effetti nella fabbricazione di panni di qualità medio-alta. La seconda parte del saggio cerca di definire, entro i limiti imposti da una situazione documentaria tutt’altro che favorevole, come e quando Milano e Como abbiano intrapreso questa strada che, tra l’altro, non fu la stessa scelta da altre due manifatture lombarde di rilievo, quelle di Monza e di Brescia. Uno spazio più ridotto èriservato all’industria dei fustagni, che gode di un’attenzione di gran lunga minore da parte della storiografia nazionale e internazionale. Anche in questo caso vengono tuttavia formulate alcune ipotesi sull’andamento della produzione nel corso del Trecento.
Il credito rurale
Authors: Menant François
Published: July 2022

Il credito è un fattore maggiore delle mutazioni agrarie e sociali che toccano le campagne lombarde nella «congiuntura del primo Trecento». Esso contribuisce fortemente alla crisi sociale tramite l’indebitamento che colpisce molti contadini e che termina con la vendita o la confisca delle loro terre: le sue conseguenze sono la ridistribuzione e la concentrazione dei patrimoni, accompagnate da riclassificazioni sociali. D’altra parte, il credito costituisce una risorsa fondamentale per il dinamismo economico della Lombardia del Trecento. Dopo aver esaminato i meccanismi e gli effetti del credito, il saggio si concentra sul formulario utilizzato dai notai. L’ultima parte del contributo presenta una tipologia dei protagonisti illustrata da alcuni case-studies forniti da studi recenti su Milano e altre città lombarde: vi compaiono prestatori e debitori di vario livello sociale, comunità e chiese.
Carestie in area lombarda tra fine duecento e metà Trecento
Authors: Albini Giuliana
Published: July 2022

All’interno del recente dibattito sulla «crisi del Trecento», il saggio pone l’attenzione sulle carestie in area lombarda, comprendendo in tale espressione sia le manifestazioni più blande di rialzo dei prezzi, legate alla penuria di alcuni generi alimentari, sia le carestie vere e proprie, sino alle più drammatiche che hanno portato alla mortalità per fame. Il focus è stato posto sulle notizie reperibili nelle cronache relative all’Italia centro-settentrionale, nelle quali sono state individuate notizie di crisi annonarie, dal secondo Duecento alla prima metà del Trecento. Un rapido sondaggio su fonti di natura diversa (in particolare statuti cittadini in materia annonaria) ha confermato che la preoccupazione delle autorità cittadine per il regolare approvvigionamento di beni alimentari si riflette in un moltiplicarsi di provvedimenti che tendono a regolamentare il flusso in città di beni alimentari. Le città lombarde, dunque, erano permeabili alle crisi e tendevano a compensare la produzione locale con l’acquisto di prodotti a lunga distanza. Il mito storiografico di una Lombardia autosufficiente e non toccata dalle crisi di sussistenza deve dunque essere ampiamente ridimensionato.
«Cho ’l nome di Dio e di Ghuadangno»: Invito alle carte dei mercanti
Authors: Nicolaj Giovanna
Published: July 2022

In questo primo intervento, l’Autore mette in evidenza l’importanza e la portata dei documenti commerciali e finanziari nel quadro generale della documentazione privata, sottolineando in particolare la coesistenza in questo genere documentario di due tipi diplomatici, l’instrumentum notarile e la scritta mercantile. Tali documenti sono anche la traccia di percorsi antropologici e esistenziali ricorrenti, pur nei diversi contesti storici.
In this first paper, the Author points out the importance and purport of commercial and financial records in the general framework of private documentation. Specifically, she emphasizes the coexistence of two diplomatic types in this documentary kind of charters: the notary instrumentum and the merchant scritta. Additionally, these records are also tracks left along anthropological and existential paths, which are recurrent through different historical contexts.
Le societates amalfitane tra sistema normativo e prassi giuridica
Authors: Galante Maria
Published: July 2022

La documentazione commerciale del territorio amalfitano è limitata, frammentaria e discontinua. Tuttavia, le pur scarse fonti collocabili tra l’età ducale e il primo periodo angioino possono fornire utili informazioni sulle modalità di partecipazione degli Amalfitani alle imprese commerciali e sui tipi di contratto che furono stipulati in tempi diversi. Un confronto effettuato con le compilazioni normative locali – la Tabula de Amalpha e le Consuetudines civitatis Amalphie – rivela una sostanziale corrispondenza tra la norma e la prassi. Le pur varie forme di contratto presentano gli stessi aspetti documentari: all’origine essi sono scritti dallo scriba di curia in curialesca amalfitana, poi, dalla metà del XIII secolo, sono redatti da un pubblico notaio in scrittura comune. Tali documenti presentano le medesime forme della locale documentazione privata e non mostrano elementi originali quanto a schemi compositivi e a sistemi di corroborazione. Durante il XIV secolo la charta amalfitana cade definitivamente in disuso e viene sostituita dall’instrumentum notarile. Aumentano considerevolmente i tipi di documento commerciale: ai contratti di commenda e di colonna si aggiungono documenti di procura, ricevute, apodixae, prestiti; tutti comunque, indipendentemente dalle modalità di redazione – instrumentum, documento in registro, imbreviatura o cedola – sono legati al circuito notarile.
The trading documentation of the Amalfi area is limited, fragmentary and discontinuous. There are a few specific sources dated between the Ducal age and the first period of the Angevin rule in Southern Italy. However, they can provide useful information about how the Amalfitans participated in trading enterprises and about the types of contracts that were stipulated at different times. The comparison with normative compilations of definite local origin, the Tabula de Amalpha and the Consuetudines civitatis Amalphie, is useful and establishes the stable correspondence between regulation and practice. The forms of commercial companies present the same documentary aspect : originally, they were written by the scribes of the curia in the “curialesca” of Amalfi, then, from the middle of the XIIIth century, they were also redacted by public notaries in common writing ; these documents follow the styles and forms of the local private document and they dont’s show original elements such as compositional scheme or validation systems. During the late XIVth century the definitive disuse of the charta “curialesca” and the exclusive use of notarial instrumentum took place. The range of commercial documents expanded considerably : are added documents of attorney, receipts, apodixae and mortgage and sale of goods contracts. This miscellaneous documentation is however bound, indipendently of its modality of redaction – that is instrumentum, document logged in a notarial register, imbreviatura and cedula – to the notarial circuit.
Des marchands sans livres de comptes ?
Authors: Arnoux Mathieu
Published: July 2022

L’opposition entre une Europe méditerranéenne (particulièrement la Toscane), riche en archives commerciale et en livres de comptes, et des régions septetrionales où les sources sont rares, est un thème classique de l’histoire économique. Les recherches récentes n’ont pas modifié cette opposition mais une enquête moins orientée sur les archives commerciales éclaire un autre fonctionnement de l’économie européenne, dans lequel la mise en écriture des relations commerciales ne passe pas par l’enregistrement des transactions par les auteurs mais plutôt par l’échange de lettres authentiques faisant mémoire des engagements des partenaires, qui seront restituées et détruites à l’issue de l’opération. Dans cette perspective, l’opposition entre nord et sud de l’Europe n’est plus entre commerce « lettré » et « illettré » mais entre archives des compagnies conservées à l’intérieur du réseau des acteurs et pièce justificatives de transactions menées à bien, cannelées ou détruites, à moins qu’un conflit entre les parties n’ait justifié leur conservation. Les sources relatives aux affaires de Jacques Coeur éclairent ce fonctionnement des relations commerciales et permettent de comprendre comment s’organisèrent les relations entre les deux Europes marchandes.
The contrast between northern countries, where merchant archives and especially ledgers, are rare, and Mediterranean regions, mostly Tuscany, with abondant archives and many ledgers, is a classic topic in commercial history. Recent research has not change this landscape: archival findings remain exceptional in northern Europe, and most of them are about Italian or Spanish merchants. Yet, an inquiry less archive-oriented provides a different idea of late-medieval European trade: northern merchants did not keep ledgers when there was not credit involved in their relations, but they had to record their transactions in authentic letters which where exchanged between partners at the end of a deal, then destroyed or cancelled. The opposition between northern and southern region is not between learnt and illiterate trade, but between archive of companies preserved inside the firm network and records of the operations, which usually vanished unless there was conflict between partners. Evidence from the Jacques Coeur trial provide new clues to understand how European merchant, with different kinds of literacy, could deal together.