bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparison of Basic Learning Outcomes of Electricity and Electronics Using Realistic Mathematics Learning Models And Discovery in Electricity Students of Elfatah Christian Vocational School Manado
Authors: Ridwan Ridwan , Litamahuputty Novian , Kilis Billy
Published: July 2024

Pada penelitian ini diketahui bahwa selama proses pembelajaran Dasar Listrik dan Elektronika secara umum masih berpusat pada guru, siswa kurang dilibatkan dalam kegiatan pembelajaran di kelas dan juga hasil belajar siswa belum mencapai kriteria ketuntasan minimal. Oleh karena itu, perlu dikembangkan suatu model pembelajaran untuk mendampingi pembelajaran yang melibatkan siswa. Tujuan penelitian ini adalah untuk mengetahui perbandingan hasil belajar dasar listrik dan elektronika dengan menggunakan model pembelajaran Realistic Mathematics and Discovery pada siswa kelas X kelistrikan di SMK Kristen Elfatah Manado. Penelitian ini merupakan penelitian Quasy Experimental Design. Penelitian ini dilaksanakan pada kelas eksperimen X Listrik A dengan menggunakan model pembelajaran Matematika Realistik dan kelas kontrol X Listrik B dengan menggunakan model pembelajaran Discovery. Teknik pengumpulan data menggunakan tes objektif, observasi, wawancara, dan dokumentasi. Teknik analisis data menggunakan uji-t. Berdasarkan uji t diperoleh thitung lebih besar dari ttabel atau 3,786 lebih besar dari 2,028. Dengan demikian dapat dinyatakan Ho ditolak dan Ha diterima. Dengan demikian dapat disimpulkan bahwa siswa yang diberi perlakuan pembelajaran Matematika Realistik mempunyai hasil belajar yang lebih baik dibandingkan siswa yang diberi perlakuan pembelajaran menggunakan model penemuan.
Implementasi Teknologi dalam Manajemen Pemasaran Pendidikan: Tantangan dan Peluang
Authors: Yandra Rezali , Mahfudnurnajamuddin Mahfudnurnajamuddin , Suriyanti Suriyanti
Published: July 2024

Dengan semakin berkembangnya teknologi digital, sektor pendidikan menghadapi transformasi signifikan dalam berbagai aspek, termasuk manajemen pemasaran. Perubahan ini mendorong institusi pendidikan untuk mengadopsi teknologi guna meningkatkan efektivitas pemasaran dan mencapai audiens yang lebih luas. Tujuan dari penelitian ini yaitu mengkaji implementasi teknologi dalam manajemen pemasaran pendidikan serta tantangan dan peluang yang terkait. Dengan menggunakan metode studi literatur, penelitian ini menganalisis berbagai sumber informasi yang relevan dengan topik tersebut. Hasil penelitian menunjukkan bahwa teknologi memainkan peran krusial dalam transformasi pemasaran pendidikan, memungkinkan institusi pendidikan untuk mencapai audiens yang lebih luas dan memperkuat hubungan dengan calon siswa. Namun, tantangan seperti kesenjangan digital, kurangnya keterampilan teknologi di kalangan staf pendidikan, dan masalah keamanan data juga perlu diatasi. Meskipun demikian, terdapat peluang besar untuk inovasi dalam pemasaran pendidikan melalui teknologi, dengan penggunaan analisis data dan kecerdasan buatan untuk personalisasi yang lebih baik. Implikasi dari penelitian ini adalah perlunya investasi dalam infrastruktur TIK, pelatihan keterampilan teknologi, dan perhatian yang lebih besar terhadap keamanan data
Implementasi Kepemimpinan Adaptif Kepala Sekolah untuk Keberhasilan di Era Disrupsi
Authors: Elmanisar Velnika , Utami Batina Yulia , Gistituati Nurhizrah , Anisah Anisah
Published: July 2024

Kepala sekolah memegang peranan krusial dalam pengembangan dan peningkatan mutu sekolah. Penelitian ini bertujuan untuk mengeksplorasi implementasi prinsip kepemimpinan adaptif oleh kepala sekolah dalam menghadapi tantangan era disrupsi. Metode penelitian yang digunakan adalah studi literatur dengan pendekatan deskriptif. Analisis dilakukan melalui content analysis terhadap berbagai referensi terkait. Hasil penelitian menunjukkan bahwa kepemimpinan adaptif, yang melibatkan kemampuan untuk mengarahkan, mengelola, dan memberdayakan anggota organisasi, sangat penting dalam merespon perubahan yang cepat dan kompleks. Kepala sekolah yang efektif mampu berpikir visioner, berkomitmen terhadap perubahan berkelanjutan, dan mendorong kolaborasi tim untuk mencapai tujuan jangka panjang sekolah. Penerapan kepemimpinan adaptif diharapkan dapat meningkatkan kompetensi guru dan prestasi siswa, serta mempersiapkan sekolah menghadapi revolusi industri 4.0.
Kreativitas Siswa Sekolah Dasar melalui Pembelajaran Berdiferensiasi
Authors: Witarsa Ramdhan , Herlina Herlina , Sofiarni Evi
Published: July 2024

Kreativitas merupakan salah satu faktor penting keberhasilan seseorang dalam menjalani kehidupannya. Kreativitas siswa sekolah dasar masih tergolong rendah hingga saat ini. Riset ini bertujuan untuk menguji tingkat kreativitas siswa sekolah dasar kelas 6 setelah diterapkannya pembelajaran berdiferensiasi.  Penelitian tindakan kelas diadopsi sebagai metode riset. Metode ini termasuk jenis riset kuantitatif. Subjek riset berjumlah 40 siswa dengan rincian 20 siswa laki-laki dan 20 siswa perempuan. Metode pengumpulan data menggunakan lembar observasi aktivitas guru, lembar observasi aktivitas siswa, dan tes kreativitas siswa. Analisis data menggunakan teknik analisis perbandingan nilai rata-rata sederhana. Kreativitas siswa meningkat sebesar 30% melalui penerapan pembelajaran berdiferensiasi. Peningkatan kreativitas siswa tersebut terjadi pada pra siklus ke siklus 1 sebesar 20%, dan 10% peningkatan terjadi pada siklus 1 ke siklus 2. Penerapan pembelajaran berdiferensiasi yang saat ini banyak diterapkan di sekolah dasar memberikan dampak positif terhadap terlaksananya kurikulum Merdeka dengan baik. Guru-guru di sekolah dasar juga merasakan manfaatnya secara signifikan.
Pengembangan Asesmen Pembelajaran Matematika untuk Menguji Kemampuan Bernalar Kritis dan Kreatif Siswa Sekolah Menengah Atas
Authors: Priyanto Agus , Hartoyo Agung , Noviani Evi
Published: July 2024

Penelitian ini bertujuan untuk mengembangkan asesmen pembelajaran matematika untuk menguji kemampuan bernalar kritis dan kreatif. Subjek uji coba penyebaran dalam penelitian adalah siswa kelas X IPA-2 SMA Negeri 3 Sanggau. Objek penelitian ini adalah asesmen pembelajaran matematika pada materi Sistem Persamaan Linear Tiga Variabel (SPLTV) untuk menguji kemampuan bernalar kritis dan kreatif siswa SMA Negeri 3 Sanggau. Hasil penelitian menunjukkan bahwa asesmen pembelajaran matematika sangat layak untuk digunakan, dimana hasil validasi dari ahli materi, ahli bahasa, dan ahli media menunjukkan asesmen SPLTV dikategorikan sangat layak dengan persentase secara berurutan yakni 90,27%, 91,67%, dan 92,96%. Sehingga dari hasil tersebut secara keseluruhan asesmen pembelajaran matematika materi SPLTV ini sangat layak untuk digunakan pada asesmen pembelajaran di kelas 10. Sedangkan hasil ujicoba asesmen bernalar kritis terhadap 35 siswa memperlihatkan hasil 8 siswa berada pada kategori baik, 14 siswa berada pada kategori cukup dan 13 orang siswa dengan kategori kurang. Sedangakan berdasarkan kemampuan berpikir kreatif memperlihatkan 5 siswa berada pada kategori baik, 18 siswa berada pada kategori cukup dan 12 orang siswa dengan kategori kurang.
TRATAMENTO DE TRANSTORNOS MENTAIS COM CÉLULAS-TRONCO: UMA ÁREA PROMISSORA EM EVOLUÇÃO
Authors: Rodrigues Fabiano de Abreu Agrela , Carvalho Luiz Felipe , Nascimento Flávio Henrique dos Santos , Kostic Velibor
Published: July 2024

Este resumo aborda a aplicação de células-tronco pluripotentes induzidas (iPSCs) na pesquisa de doenças mentais. As iPSCs, derivadas de células somáticas como as da pele, são reprogramadas para um estado pluripotente, permitindo a diferenciação em vários tipos de células neurais. Este processo abre novas possibilidades para a modelagem de doenças psiquiátricas, como esquizofrenia e transtorno bipolar, em um contexto genético específico do paciente. Discutimos a importância da oligodendrogênese e a modulação de sinais de cálcio nas células neurais, aspectos cruciais para compreender e tratar transtornos mentais. Esses modelos baseados em iPSCs fornecem uma plataforma inovadora para desenvolver estratégias terapêuticas personalizadas e testar medicamentos, refletindo um avanço significativo na pesquisa biomédica e no tratamento de doenças neuropsiquiátricas.
Securing Machine Learning: Understanding Adversarial Attacks and Bias Mitigation
Authors: Lakhani Archit , Rohit Neyah
Published: July 2024

This paper offers a comprehensive examination of adversarial vulnerabilities in machine learning (ML) models and strategies for mitigating fairness and bias issues. It analyses various adversarial attack vectors encompassing evasion, poisoning, model inversion, exploratory probes, and model stealing, elucidating their potential to compromise model integrity and induce misclassification or information leakage. In response, a range of defence mechanisms including adversarial training, certified defences, feature transformations, and ensemble methods are scrutinized, assessing their effectiveness and limitations in fortifying ML models against adversarial threats. Furthermore, the study explores the nuanced landscape of fairness and bias in ML, addressing societal biases, stereotypes reinforcement, and unfair treatment, proposing mitigation strategies like fairness metrics, bias auditing, de-biasing techniques, and human-in-the-loop approaches to foster fairness, transparency, and ethical AI deployment. This synthesis advocates for interdisciplinary collaboration to build resilient, fair, and trustworthy AI systems amidst the evolving technological paradigm.
Analysis of the Effectiveness of Based Public Services Information and Communication Technology (ICT)
Authors: Pramashanti Ditya , . Okparizan , Septiawan Armauliza
Published: July 2024

This research is entitled: Analysis of the Effectiveness of Public Services Based on Information and Communication Technology (ICT): Study of the National Public Service Complaint Management System for People's Online Aspiration and Complaint Services (SP4N LAPOR) at the Communication and Information Service of the Riau Islands Province. The aim of the research is to determine the effectiveness of public services that utilize information and communication technology (ICT) with the SP4N LAPOR Application service at the Riau Islands Province Communication and Informatics Service (Diskominfo). The SP4N LAPOR Application is an application that can be used for category purposes. reporting in the form of aspirations and appreciation, as well as requests for public information and complaints and reports in the reporting completion category. and one of the government's efforts to provide high-quality public services for the community. In measuring the level of program effectiveness, researchers used Champbel theory (in Mutiarin and Arif, 2014). Also this research is descriptive in nature by applying qualitative methods. Informants were determined by applying purposive sampling techniques. In data collection, research instruments were used, including field observations and interviews with several informants. Then documentation studies are used for the documents in the research. Meanwhile, data analysis techniques are carried out through data reduction, displaying data and drawing conclusions on research that has been carried out. In the research results, it was found that the effectiveness of ICT- based public services with the SP4N LAPOR application in the Riau Islands Province Communication and Information Service (Diskominfo) was running quite effectively, although there were a number of obstacles, including limited reliability human resources in the field of information technology and obstacles. others in the form of the Riau Islands Provincial Government, especially Diskominfo, do not yet have an Information and Communication Technology (ICT) master plan and an Electronic Based Service System (SPBE) architecture.
Analysis of the Quality of Community Satisfaction in Public Services in Tanjungpinang Class I State Detention House
Authors: Rachma Diannita , Samin Rumzi , Hadi Basalamah Rezal
Published: July 2024

This thesis research is entitled: Analysis of the Quality of Community Satisfaction in Public Services at the Tanjungpinang Class I State Detention House. This research was carried out in response to complaints from community members, especially from the families of Correctional Inmates (WBP) at the Class I Tanjungpinang State Detention House (Rutan). The aim of this research is to find out and analyze public satisfaction with public services at the Class I Tanjungpinang State Detention House and to find out and analyze the obstacles to public satisfaction with public services at the Tanjungpinang Class I State Detention House. To answer the problem formulation, researchers used research methods with a qualitative descriptive approach and data analysis techniques based on the theory of Milles & Huberman (2014). Meanwhile, to determine the level of satisfaction in public services. Researchers use indicators based on (Bernes, 2003:71), which describes the level of satisfaction with public services through five criteria, namely: Core Products or Services; Support Services System; Technical Performance; Elements of Interaction with Customers and Emotional Elements. The results of the research show that public satisfaction with the services provided by the management of the Tanjungpinang Class I State Detention House (Rutan) is not satisfactory and does not meet community expectations. It is recommended that the Head of the Tanjungpinang Class I State Detention House provide training to his employees so that they gain skills and are more insightful in carrying out their duties.
Advancing Precision Particle Background Estimation for Future X-Ray Missions: Correlated Variability between the Alpha Magnetic Spectrometer and Chandra/XMM-Newton
Authors: Sarkar Arnab , Grant Catherine E. , Miller Eric D. , Bautz Mark , Schneider Benjamin , Foster Rick F. , Schellenberger Gerrit , Allen Steven , Kraft Ralph P. , Wilkins Dan , Falcone Abe , Ptak Andrew
Published: July 2024

Galactic cosmic-ray (GCR) particles have a significant impact on the particle-induced background of X-ray observatories, and their flux exhibits substantial temporal variability, potentially influencing background levels. In this study, we present 1 day binned high-energy reject rates derived from the Chandra-ACIS and XMM-Newton EPIC-pn instruments, serving as proxies for the GCR particle flux. We systematically analyze the ACIS and EPIC-pn reject rates and compare them with the AMS proton flux. Our analysis initially reveals robust correlations between the AMS proton flux and the ACIS/EPIC-pn reject rates when binned over 27 day intervals. However, a closer examination reveals substantial fluctuations within each 27 day bin, indicating shorter-term variability. Upon daily binning, we observe finer temporal structures in the data sets, demonstrating the presence of recurrent variations with periods of ∼25 days and 23 days in the ACIS and EPIC-pn reject rates, respectively, spanning the years 2014–2018. Notably, during the 2016–2017 period, we additionally detect periodicities of ∼13.5 days and 9 days in the ACIS and EPIC-pn reject rates, respectively. Intriguingly, we observe a time lag of ∼6 days between the AMS proton flux and the ACIS/EPIC-pn reject rates during the second half of 2016. This time lag is not visible before 2016 and after 2017. The underlying physical mechanisms responsible for this time lag remain a subject of ongoing investigation.
Multiwavelength Emission of the Gamma-Ray Burst Prompt Phase. I. Time-resolved and Time-integrated Polarizations
Authors: Li Jia-Sheng , Lan Mi-Xiang , Wang Hao-Bing
Published: July 2024

The time-integrated polarization degree (PD) in the prompt optical band of a gamma-ray burst (GRB) was predicted to be less than 20%, while the time-resolved one can reach as high as 75% in the photosphere model. Polarizations in the optical band during the GRB prompt phase have not previously been studied in the framework of the magnetic reconnection model. Here, a three-segment power law of the energy spectrum is used to reconstruct the Stokes parameters of the magnetic reconnection model. Multiwavelength light curves and polarization curves from the optical band to MeV gamma rays in the GRB prompt phase are studied. We found that, depending mainly on the jet dynamics, there is a long-lasting high-PD phase in all calculated energy bands for the typical parameter sets. The time-resolved PD could be as high as 50%, while the time-integrated one is roughly 17% in the optical band. The time-resolved PD in X-rays can reach 60% and the time-integrated one is around 30%–40%. The evolution of polarization angle (PA) is random in both optical and gamma-ray bands for the photosphere model, while it is roughly constant in the synchrotron models. Therefore, future time-resolved PA observations in the prompt optical or gamma-ray band could distinguish between the photosphere and synchrotron models.
On the Interacting/Active Lifetime of Supernova Fallback Disks around Isolated Neutron Stars
Authors: Xu Kun , Yang Hao-Ran , Jiang Long , Chen Wen-Cong , Li Xiang-Dong , Liu Jifeng
Published: July 2024

The fallback disk model is widely accepted to explain long-period neutron stars (NSs) that cannot be simulated by magnetic dipole radiation. However, there was no confirmed detection of disks from the newly discovered long-period pulsars GLEAM-X 162759.5-523504.3 and GPM J1839-10 and the slowest known isolated NS 1E 161348-5055. This might be because the disks have either been in a noninteracting/inactive state where their emission is too weak to be detected or have been disrupted. In this work, we conduct simulations to examine the lifetime of supernova fallback disks around isolated NSs. We assume that the disks' mass varies in a self-similar way, and their interaction with the NS occurs only in an interacting/active state. Our results reveal that nearly all the interacting lifetimes for the disks are shorter than 105 yr, while the existence lifetimes are considerably longer.
1991T-like Supernovae*
Authors: Phillips M. M. , Ashall C. , Brown Peter J. , Galbany L. , Tucker M. A. , Burns Christopher R. , Contreras Carlos , Hoeflich P. , Hsiao E. Y. , Kumar S. , Morrell Nidia , Uddin Syed A. , Baron E. , Freedman Wendy L. , Krisciunas Kevin , Persson S. E. , Piro Anthony L. , Shappee B. J. , Stritzinger Maximilian , Suntzeff Nicholas B. , Chakraborty Sudeshna , Kirshner R. P. , Lu J. , Marion G. H. , Polin Abigail , Shahbandeh M.
Published: July 2024

Understanding the nature of the luminous 1991T-like supernovae (SNe) is of great importance to SN cosmology as they are likely to have been more common in the early Universe. In this paper, we explore the observational properties of 1991T-like SNe to study their relationship to other luminous, slow-declining Type Ia supernovae (SNe Ia). From the spectroscopic and photometric criteria defined in Phillips et al., we identify 17 1991T-like SNe from the literature. Combining these objects with 10 1991T-like SNe from the Carnegie Supernova Project-II, the spectra, light curves, and colors of these events, along with their host galaxy properties, are examined in detail. We conclude that 1991T-like SNe are closely related in essentially all of their UV, optical, and near-infrared properties—as well as their host galaxy parameters—to the slow-declining subset of Branch core-normal SNe and to the intermediate 1999aa-like events, forming a continuum of luminous SNe Ia. The overriding difference between these three subgroups appears to be the extent to which 56Ni mixes into the ejecta, producing the premaximum spectra dominated by Fe iii absorption, the broader UV light curves, and the higher luminosities that characterize the 1991T-like events. Nevertheless, the association of 1991T-like SNe with the rare Type Ia circumstellar material SNe would seem to run counter to this hypothesis, in which case 1991T-like events may form a separate subclass of SNe Ia, possibly arising from single-degenerate progenitor systems.
Formal model for Acyrthosiphon pisum, Aphis fabae, Myzus persicae and Sitobion avenae using the ALMaSS subpopulation approach
Authors: Thomsen Peet , Duan Xiaodong , Topping Christopher John
Published: July 2024

Aphids are one of the most harmful insect species for crops and are thus an important group to model in ALMaSS because they drive both management and natural enemy dynamics. Due to the enormous number of aphids, using an agent-based method to model aphids is not feasible. To deal with this, we propose creating an Aphid model using a spatial subpopulation model approach. Built on the dynamic landscape model in ALMaSS, subpopulations are assumed to occupy the landscape in a set of regular grid cells of equal size. The aphid population will be tracked in each grid using a stage-structured population model; population size and behaviour will depend on the habitat structure under the grid. They will develop, reproduce, and die based on the aphids’ physiological processes, the effects of predators, and the grids’ weather and vegetation host conditions. Aphid dispersal by flying and local movement to adjacent grids will interconnect the populations in the grid cells.
Three new species of Pestalotiopsis (Amphisphaeriales, Sporocadaceae) were identified by morphology and multigene phylogeny from Hainan and Yunnan, China
Authors: Yin Changzhun , Zhang Zhaoxue , Wang Shi , Ma Liguo , Zhang Xiuguo
Published: July 2024

Pestalotiopsis fungi are widely distributed all over the world, mainly as plant pathogens, endophytes or saprobes from multiple hosts. In this study, the sequence data analysis based on internal transcribed spacer (ITS), partial beta-tubulin (tub2) and partial regions of translation elongation factor 1 alpha (tef1α) combined with morphological characteristics was used to identify strains isolated from the diseased leaves of Aporosa dioica and Rhaphiolepis indica, as well as some rotted leaves from Yunnan and Hainan Provinces in China as three new species, viz., Pestalotiopsis aporosae-dioicaesp. nov., P. nannuoensissp. nov. and P. rhaphiolepidissp. nov.
Notes on the genus Syzygium (Myrtaceae) from Cambodia, Thailand, Vietnam, China and Taiwan
Authors: Chantaranothai Pranom
Published: July 2024

Syzygium kampotense is a new species from Cambodia. Syzygium cerasiforme, S. foxworthianum, and S. angkae and S. thorelii are new records from Cambodia, Vietnam and China, respectively. Syzygium prainianum subsp. minor and S. densinervium var. insulare are placed under S. prainianum and S. densinervium, respectively. Eugenia cochinchinensis, E. eburnea and E. ripicola, are reduced to synonymy under S. pellucidum. Lectotypes for Eugenia densiflora var. angustifolia, E. pellucida and E. pellucida var. contracta are designated.
Royaume-Uni. Le droit du travail, un enjeu essentiel des prochaines élections législatives
Authors: Freyssinet Jacques
Published: July 2024

Les élections législatives du 4 juillet 2024 au Royaume-Uni devraient mettre fin à quatorze années de gouvernements conservateurs et permettre des inflexions dans la politique économique et sociale. L’un des domaines importants des changements potentiels concerne le droit du travail. Le programme du parti travailliste contient un nombre élevé d’engagements. Nous en retenons quatre qui constituent des enjeux cruciaux dans le contexte actuel : les contrats zéro heure, les procédures de licenciement et réembauche, la survie des droits hérités des directives communautaires, les entraves à l’exercice du droit de grève.
Europe. Ryanair ou la difficile construction d’un syndicalisme européen de terrain (2017-2023)
Authors: Vandewattyne Jean , Bauraind Bruno
Published: July 2024

Malgré l’hostilité de la compagnie aérienne irlandaise low cost Ryanair envers toute forme de représentation des travailleurs et de négociation collective, elle n’a pas échappé à la conflictualité sociale. En 2018, l’organisation collective des salariés a abouti à des grèves offensives de dimension européenne. Par la suite, les problèmes rencontrés par le Boeing 737 Max et la pandémie de Covid-19 freinent ce mouvement et contribuent à le relocaliser sur des enjeux nationaux. Ce conflit n’en reste pas moins riche d’enseignements quant aux conditions de possibilité de l’européanisation de la grève et aux modalités d’un syndicalisme européen de terrain, mais aussi aux difficultés de sa structuration sur le temps long.
Le rire sur la palette
Authors: Gomez-Géraud Marie-Christine
Published: July 2024

Le motif du rire, qui apparaît dans les représentations du Christ à la Renaissance, ne disparaît pas de la peinture religieuse à l’époque de la Contre-Réforme, contrairement à ce que l’on croit parfois : sa présence indirecte ou discrète suggère même l’allégresse spirituelle ou la réalité de l’Incarnation.
Appartenance et liberté, l’histoire de Sophie
Authors: Woolf Sophie
Published: July 2024

Ce récit à deux voix d’une patiente et de sa Gestalt-thérapeute est l’histoire de l’émancipation douloureuse de Sophie hors des zones connues du conformisme social et patriarcal qui voudrait qu’une bonne victime soit celle qui se tait. Car le silence est la violence ultime imposée à qui a besoin, plus que tout, de retrouver sa souveraineté. Parler, dire, écrire, publier en est ici l’antidote. Cette narration du fil d’un travail thérapeutique approfondi en Gestalt est aussi éclairée par l’analyse socioclinique qui lui garde toute sa complexité. Écrire vaut ici achèvement d’un cycle de contact.
Protection du marché du travail dans l’espace et dans le temps
Authors: Ferragina Emanuele , Danilo Filetti Federico
Published: July 2024

Cette étude 2 mesure et interprète l’évolution de la protection du marché du travail dans 21 pays à revenu élevé sur trois décennies, en utilisant les concepts de « diversité institutionnelle » et de « trajectoire de changement » déjà développés dans la littérature, notamment par G. Esping-Andersen. Le niveau de protection du marché du travail est évalué en tenant compte de quatre dimensions institutionnelles (protection de l’emploi, protection contre le chômage, maintien du revenu, politique active de l’emploi) et du changement de la composition de la force de travail. Il tient compte de l’évolution conjointe des institutions du marché du travail, de leurs complémentarités et de leurs relations avec le système social. La nature multidimensionnelle de la protection du marché du travail est traitée à l’aide d’une analyse en composantes principales et les caractéristiques des trajectoires de changement des pays avec un score composite. La contribution à la littérature scientifique est triple. Premièrement, une typologie révisée tient compte des processus de changement entre 1990 et 2015 et regroupe les pays sur la base des niveaux de coordination et de solidarité. Deuxièmement, nous constatons que malgré un écart persistant, une grande majorité des économies coordonnées, qui ont connu une baisse du niveau de protection du marché du travail, se sont rapprochées des économies libérales. Enfin, une taxonomie à cinq catégories des trajectoires de changement (libéralisation, dualisation, flexicurité, dé-dualisation, protection renforcée) montre que ces trajectoires ne sont pas toujours dépendantes ni cohérentes avec les variétés institutionnelles précédemment développées dans la littérature scientifique.
Transforming Traditional Labs into Virtual Computing Labs for Distance Education
Authors: Gercek Gokhan , Saleem Naveed
Published: July 2024

Abstract---The demand for on-line courses continues to rise in academia because (1) on-line courses remove time barriers that would otherwise restrict a student from pursuing academic endeavors, (2) they remove the distance barriers for academia in reaching potential students and (3) they can to some extent alleviate budgetary and physical constraints on the academia in imparting education to students. The on-line instruction mode rather easily accommodates courses in some disciplines such as history, sociology, and political science. However, it posits significant adoption challenges for courses that require hands-on computing experimentation such as computer networking, system administration, web application development and database administration. Nevertheless, given the demand for on-line courses, there is a need to devise strategies that would allow students to conduct computing experiments through remote access. This paper presents an approach to transform traditional computer labs into a virtual lab environment. Such transformation allows students to remotely conduct experiments that involve software and hardware interaction. The methodology presented here can be applied to a large number of computing courses encountered in Management Information Systems and Computer Sciences disciplines.
Discrete Event Simulation: State of the Art
Authors: Babulak Eduard , Wang Ming
Published: July 2024

Discrete event simulation technologies have been
extensively used by industry and academia to deal with
various industrial problems. By late 1990s, the discrete
event simulation was in doldrums as global manufacturing
industries went through radical changes. The simulation
software industry also went through consolidation. The
changes have created new problems, challenges and
opportunities to the discrete event simulation. This paper
reviews the discrete event simulation technologies; discusses
challenges and opportunities presented by both global
manufacturing and the knowledge economy. The authors
believe that discrete event simulation remains one of the
most effective decision support tools but much need to be
done in order to address new challenges. To this end, the
paper calls for development of a new generation of discrete
event simulation software.
A Virtual Laboratory for Digital Design
Authors: Donzellini Giuliano , Ponta Domenico
Published: July 2024

This paper presents a virtual laboratory for
digital design, specifically conceived for educational
application and for supporting project work both locally
and at distance: the Deeds. It covers combinational and
sequential logic networks, finite state machines,
microcomputer interfacing and programming at assembly
level. The virtual lab is based on three simulator integrated
together, combined with a large repository of application
projects, available on the web. The paper contains an
example of a laboratory session, structured accordingly to
the Project Based Learning methodology.
Interactive Web-based e-learning for Studying Flexible Manipulator Systems
Authors: Azad Abul K. M.
Published: July 2024

Abstractâ?? This paper presents a web-based e-leaning facility for simulation, modeling, and control of flexible manipulator systems. The simulation and modeling part includes finite difference and finite element simulations along with neural network and genetic algorithm based modeling strategies for flexible manipulator systems. The controller part constitutes a number of open-loop and closed-loop designs. Closed loop control designs include the classical, adaptive, and neuro-model based strategies. Matlab software package and its associated toolboxes are used to implement these. The Matlab web server is used as the gateway between the facility and web-access. ASP.NET technology and SQL database are utilized to develop web applications for access control, user account and password maintenance, administrative management, and facility utilization monitoring. The reported facility provides a flexible but effective approach of web-based interactive e-learning facility of an engineering system. This can be extended to incorporate additional engineering systems within the e-learning framework.
Motor-Manipulatory Behaviours and Learning: an Observational Study
Authors: Bilotta Eleonora , Gabriele Lorella , Servidio Rocco , Tavernise Assunta
Published: July 2024

In this paper we investigated the role of motor-manipulatory behaviour in the learning modalities of thirty-five primary school children interacting with a Lego MindStorms kit. In particular, by means of an observational taxonomy of childrenâ??s behaviour, we analysed the video records of two observational sessions regarding the learning activities during the building of a small robot. Our results demonstrated that motor-manipulatory behaviours are strictly linked to cognitive processes, and that the acquisition of new knowledge can be considered as the result of a gradual experience of integration between both perceptual and manipulative behavioural routines.
Pour une histoire des pétrarquismes ibériques, de Sá de Miranda aux poètes des Flores de poetas ilustresde España (1526-1605)
Authors: Behar Roland
Published: July 2024

Dans la péninsule Ibérique comme dans le reste de l’Europe, le pétrarquisme est sans doute le mouvement poétique majeur du xvie siècle, tant en portugais qu’en castillan. L’histoire conjointe des pétrarquismes des deux couronnes et des deux langues, depuis leurs origines communes – quand Francisco Sá de Miranda, Juan Boscán et Garcilaso de la Vega rapportent le pétrarquisme d’Italie dans les années 1520 – jusqu’au moment où, à l’aube du xviie siècle, le pétrarquisme cesse d’être le modèle de référence de l’invention poétique, est celle d’une mode – liée à celle, plus générale, de l’italianisme codifié dans le Courtisan de Castiglione. Ils suscitèrent des oppositions, vives parfois, qui contribuèrent à définir comme telle cette mode, firent l’objet de théorisations et de compilations dans des cartapacios, adoptèrent des formes éditoriales précises – les recueils de Rimas, individuels (sur le mode des Rerum vulgarium fragmenta de Pétrarque) ou collectifs, manuscrits ou imprimés – et enfin se traduisirent par la diffusion d’une koiné littéraire commune à tous les poètes de la fin du xvie et du début du xviie siècle, passés maître dans l’art d’imiter Pétrarque et inventeurs, pour les plus géniaux, de nouveaux langages poétiques.
Mervyn Peake’s Gormenghast Novels: a Baroque Hostility to Straight Lines
Authors: Mantrant Sophie
Published: July 2024

Can Peake’s Gormenghast novels be termed baroque? This paper suggests the beginnings of an answer by examining one aspect which is usually considered a distinguishing feature of baroque art, namely, its marked preference for curves, broken lines, spirals or arabesques over straight lines. Peake’s baroque resistance to the constraint of linearity is evidenced by two different types of ‘deviations’: the numerous peripheral episodes or subsidiary diegetic strands and the countless lavish descriptions, both elements throwing into relief Peake’s baroque urge to show all. A close examination of these deviations leads to more general reflections on the opposition fixity/fluidity in the novels, the stress being laid on the metamorphic quality of the gigantic imaginative world created by Peake.
Genetic diversity analysis of traditional and improved rice genotypes in Sri Lanka
Authors: Shyamalee H.A.P.A. , Ranawake A.L.
Published: July 2024

The objective of the present study was to find the genetic diversity of eight improved varieties and eighty-four traditional accessions of rice using nine polymorphic simple sequence repeat (SSR) markers. The SSR markers detected 32 alleles ranging from 2 to 5, with an average of 3.55 alleles per locus, indicating a high genetic diversity. The number of effective alleles (ne) ranged from 1.85 (RM208) to 3.84 (RM493), with an average of 2.64 alleles per locus, which reconfirms an existing broad genetic diversity. Nei’s genetic diversity index (Nei, 1973) was very high (0.5955), indicating a high mean expected heterozygosity (HE). RM493 recorded the maximum polymorphism information content (PIC) value (0.8814). The mean PIC value was 0.5955 for the used SSR markers. Out of nine SSR markers, seven scored more than 0.5 PIC values, proving their potential to be used as genetic markers. Shannon’s information index (I) ranged from 0.65 (RM208) to 1.36 (RM493), with a mean value of 1.00. All genetic diversity indicators, na, ne, HE, PIC and I reflect the high genetic differentiation in representative sample of rice genotypes. According to the unweighted pair group method with arithmetic mean dendrogram and Nei’s genetic distance, the ninety-two rice genotypes were classified into seven groups at an ~85 level of similarity with additional sub-clusters within each group. Rice genotypes with significant genetic divergence can be chosen for upcoming breeding programmes by assessing their positions within the dendrogram. In the dendrogram, genotypes sharing the same name were not clustered together, indicating their distinct genetic backgrounds despite them sharing the same name. The traditional rice accessions clustered together in the dendrogram can be further analysed using more polymorphic SSR markers.
The South African economy: Its growth and change
Authors: Ternpelhoff J.W.N.
Published: July 2024

No abstract available.
Russia and the Anglo-Boer War 1899-1902
Authors: Eloff C.C.
Published: July 2024

No abstract available.
Agrariese geskiedenis en streekhistoriese navorsing
Authors: Eloff C.C.
Published: July 2024

Today, farming still ranks as one of the key industries in the national economy of most countries. As a result of this, during the last forty years, keen interest in the agricultural past has taken root especially in Europe and the USA. It was, however, only after World War II that the study of agrarian history was put on a systematic, organised, and scientific basis. One of the main reasons for this is the wide interest being shown in social and economic history, and the recognition of the role which agriculture plays (or has played) in society as a whole. On account of its nature and scope, the study of agrarian history calls for an interdisciplinary approach, which implies a cognisance of the contents and implementation of the methods used by other social sciences. Local and regional history, in particular, can benefit from 'n knowledge of the agrarian past, since agriculture has for centuries been the pivot on which socio-economic activities in rural areas hinged. In contrast with the situation abroad, the study of agrarian history in South Africa is still in its infancy and very little research has yet been done in this sphere.
High-risk HPV Prevalence Estimates among Older Patients: Implications for Cervical Cancer Screening Programs
Authors: Mittal Sneha , Kansal Yamini , Singh Bhumika , Gupta Vineeta
Published: July 2024

Background:

Due to the heterogeneity of existing studies and wide range of human papilloma virus (HPV) prevalence in India, further research into the incidence of HR-HPV and its spectrum of genotypes is essential to develop screening policies. This study aimed to determine the incidence and demographic distribution of HR-HPV among cisgender female patients attending a tertiary care facility in North India.

Materials and Methods:

This study was conducted in the Department of Obstetrics and Gynaecology, SGRR Institute of Medical and Health Sciences, Dehradun, India. HPV-DNA test results of 653 female patients were assessed for HR-HPV positivity, genotyping, and age-based differences via Chi-square analysis.

Results:

Overall prevalence of HR-HPV was 4.90%, HPV-16 was 1.37%, HPV-18 was 0.76%, and HPV non-16,18 was 2.7%. In patients ≤ 50 years, prevalence of HPV-16 was 0.97%, HPV-18 was 0.38%, and HR-HPV non-16,18 was 2.71%. In patients > 50 years, prevalence of HPV-16 was 2.89%, HPV-18 was 2.17%, and HR-HPV non-16,18 was 2.89%. The difference in the prevalence of HPV-16,18 between patients ≤ and > 50 years was found to be highly statistically significant (P = 0.007485). The difference in the prevalence of total HR-HPV between patients ≤ and > 50 years was not found to be statistically significant (P = 0.059905).

Conclusion:

Our study’s finding of higher HR-HPV positivity rates in patients > 50 years emphasizes the need for continued HR-HPV-DNA-based screening of this cohort. With widespread use in post-menopausal patients, HPV screening can serve as an important armamentarium in the fight against cervical cancer.
Clinical Spectrum of Dermatological Disorders at an Urban Health Center in East Delhi
Authors: Soni Sonika , Garg Taru , Acharya Anita , Sarkar Rashmi
Published: July 2024

Dermatological disorders constitute a significant proportion of primary health care (PHC) setups. The pattern of dermatological disorders varies among different countries and different parts of the same country owing to climatic and geographical variations, level of education, access to health care, etc. To study the clinical spectrum of patients presenting with dermatological disorders at an urban health center (UHC) in East Delhi. To identify the various risk factors associated with dermatological disorders in study subjects. A total of 1,148 patients who reported skin diseases for the first time at the Dermatology Outpatient Clinic at UHC in East Delhi were recruited. Detailed demographic data, history, and examination and potential risk factors of skin diseases (socioeconomic status, level of education, occupation, comorbidities, and addictions) were recorded on a predesigned proforma. A total of 616 (53.7%) patients had infectious dermatoses and 532 (46.3%) had non-infectious dermatoses. Among the infectious dermatoses, fungal diseases (44.8%) were the most common followed by parasitic infections (31.17%) and bacterial infections (9.74%). Among the non-infectious group, eczematous disorders (28.01%) were the most common, followed by pigmentary disorders (21.62%) and acne (19.55%). A significant association between level of education, occupation, and comorbidities with the distribution of infectious and non-infectious dermatoses was found. As a significant proportion of patients with a vivid spectrum of dermatological disorders present at the PHC setups, therefore dermatologists supervise that specialty clinics should be held regularly at these centers along with the availability of all the basic investigations to aid diagnosis and management.
The Glowport – Illuminated vitrectomy trocar cannulas
Authors: Chandrakanth Prithvi , Verghese Shishir , Chandrakanth KS , Basaiawmoit Priya , Joseph Verghese
Published: July 2024

The use of small-gauge trocar cannulas during transconjunctival sutureless pars plana vitrectomy (PPV) facilitates the smooth transition of instruments into the posterior segment and reduces trauma. However, room lighting is routinely dimmed during PPV, thereby making cannula visualization difficult and hence compromising efficient instrument exchange. We report the use of a frugal, fluorescent “glow-in-the-dark” ring placed over vitrectomy cannulas to visualize the cannula entry, thereby providing a smooth and efficient instrument exchange. We 3D-printed phosphorescent rings of optimum inner diameter to comfortably fit around the trocar cannula (The Glowport). Two such rings are fitted into the two trocar cannulas prior to surgery initiation. The cannulas are then passed via sclerostomy as performed in routine PPV. The light from the fiberoptic endo-illuminator is focused over the rings for approximately 5 seconds to activate the photoluminescence. Under mesopic conditions, the fluorescence provides visualization of the cannula entry and helps in the facilitation of smooth entry and exchange of instruments into the globe for performing vitreoretinal surgical procedures, which helps in reducing ocular touch errors as well as surgical time. The Glowport is a frugal device retrofitted onto the trocar cannulas and helps in the smooth entry and exchange of instruments under darkroom conditions, which are required in vitreoretinal surgery.
Oral Vitamin D Treatment in Patients with Telogen Effluvium: Clinical and Dermoscopic Evaluation
Authors: El-Tatawy Rania Ahmed , Gheida Shereen , Soliman Ghada Adbel Moamen , Ismail Mayada
Published: July 2024

Background:

Telogen effluvium (TE) is the most common hair loss. Vitamin D is related to hair and skin diseases due to its immunomodulatory and anti-inflammatory effects.

Objective:

To investigate Vitamin D serum level role in TE pathogenesis.

Patients and Methods:

Forty females with TE were collected and twenty age- and sex-matched healthy individuals as controls. Serum 25(OH) Vitamin D level was estimated prior and 3 months after oral Vitamin D.

Results:

The mean serum 25(OH) Vitamin D levels were significantly lower in TE patients than controls (13.31 ± 5.8 ng/ml vs. 33.61 ± 8.16 ng/ml) respectively, P < 0.001. The mean serum 25(OH) Vitamin D levels before treatment in acute TE was 12.31 ± 6.88 ng/ml, compared to 10.6 ± 3.9 ng/ml in chronic TE without a significant difference, (P = 0.544). The mean serum 25(OH) Vitamin D levels in TE group after 3 months oral Vitamin D therapy were 38.4 ± 15.22 ng/ml with significant increase compared to pretreatment level, (P < 0.001). However, without a significant difference between acute TE (45.4 ± 9.22 ng/ml) and chronic TE (42.1 ± 10.6 ng/ml), (P = 0.711).

Conclusion:

Oral Vitamin D has a promising effect in TE treatment, but the results need to be verified on a larger scale with evidence-based recommendation regarding the exact dose and treatment duration.
Evaluation of Relationship between Intrinsic Radiosensitivity (Survival Fraction at 2 Gy) and Gamma-H2AX Test and Apoptosis of Lymphocytes in Breast Cancer Patients
Authors: Bahreyni Toosi Mohammad Taghi , Azimian Hossein , Salek Roham , Tabatabaei Seyed Abbas , Forghani Mohammad Naser , Dolat Elham
Published: July 2024

Background:

Radiotherapy is one of the routine treatment strategies for breast cancer (BC) patients. Different responses of the patient to radiation due to different intrinsic radiosensitivity (RS) were induced to the researcher try to introduce a standard assay for the prediction of RS. Clonogenic assay is recognized as a gold standard method in this subject but because of some of its disadvantages, it is needed for alternative assays. In this study, two assays were evaluated for this reason in ten BC patients with different RSs.

Methods:

The peripheral blood of 10 volunteers with BC was obtained, and the peripheral blood mononuclear cells were extracted. After exposed with 2 Gy, survival fraction at 2 Gy (SF2) was calculated by clonogenic assay. γ-H2AX assay was performed for all patients, and apoptosis assay was evaluated for three represented categorized patients.

Results:

RS of patients showed SF2 and categorized in three groups (high, medium, and low RS). Double-strand breaks (DSBs) were decreased in high radiosensitive patients, but the residual DSBs were clearly higher than other two groups. It is shown that the repair system in these patients is lower active than others. Apoptosis frequency in patient 4 is highly active which could induce the enhancement of her RS.

Conclusion:

γ-H2AX and apoptosis assays could predict the intrinsic RS, but evaluation of them separately is not sufficient for this aim. It is necessary to consider all the parameters together and consideration of the combination of assays could fit a better prediction of intrinsic RS.