bluuebunny/crossref_metadata_2025 huggingface dataset:
Evidence for Gravitational-wave-dominated Emission in the Central Engine of Short GRB 200219A
Authors: Lü Hou-Jun , Yuan Yong , Lan Lin , Zhang Bin-Bin , Zou Jin-Hang , Peng Zong-Kai , Shen Jun , Liang Yun-Feng , Wang Xiang-Gao , Liang En-Wei
Published: July 2020

GRB 200219A is a short gamma-ray burst (GRB) with extended emission (EE) lasting ∼90 s. By analyzing data observed with the Swift/BAT and Fermi/GBM, we find that a cutoff power-law model can adequately fit the spectra of the initial short pulse with

keV. More interestingly, together with the EE component and early X-ray data, it exhibits plateau emission smoothly connected with a ∼t
−1 segment and followed by an extremely steep decay. The short GRB composed of those three segments is unique in the Swift era and is very difficult to explain with the standard internal/external shock model of a black hole central engine, but could be consistent with the prediction of a magnetar central engine from the merger of an NS binary. We suggest that the plateau emission followed by a ∼t
−1 decay phase is powered by the spin-down of a millisecond magnetar, which loses its rotation energy via GW quadrupole radiation. Then, the abrupt drop decay is caused by the magnetar collapsing into a black hole before switching to EM-dominated emission. This is the first short GRB for which the X-ray emission has such an intriguing feature powered by a magnetar via GW-dominated radiation. If this is the case, one can estimate the physical parameters of a magnetar, the GW signal powered by a magnetar and the merger-nova emission are also discussed.
Analyse macro-économique des politiques de l’emploi en Algérie dans une perspective d’un développement durable
Authors: Mendil Djamila
Published: July 2020

En Algérie, la population jeune âgée de moins de 25 ans constitue une opportunité à valoriser pour assurer un développement durable. Les jeunes sont les premières victimes du chômage alors que des politiques ont été élaborées pour promouvoir la création d’emplois. Les politiques menées depuis plus de trois décennies se sont traduites par un mouvement continu de la baisse du taux de chômage, sans pour autant qu’il s’agisse d’emplois durables. Une analyse des différentes politiques d’emploi entreprises par les autorités éclaire sur le lien entre l’emploi et la sphère macro-économique. Cette étude nous permet de faire le constat que, pour le cas de l’Algérie, l’investissement dans le domaine des énergies renouvelables et le développement des investissements directs étrangers peut être un moteur de création d’emplois durables. Classification JEL : J08, J64, E24
Quelle caractérisation du savoir-être ? Une revue de la littérature en deux temps
Authors: Faure Frédéric , Cucchi Alain
Published: July 2020

Malgré une très large utilisation, sous différents vocables, la notion de savoir-être est encore mal cernée. Cet article vise à en clarifier le concept et à en identifier les différentes dimensions sur la base d’une revue de la littérature menée en deux temps. Une première approche nous a permis de recenser les différentes définitions en vigueur et d’en souligner les divergences. Afin d’approfondir notre exploration conceptuelle, dans une seconde phase de notre analyse de la littérature, nous avons constitué un corpus de 39 références puisées dans des travaux académiques en sciences de gestion, en sciences de l’éducation et en psychologie, complétées par des rapports professionnels. Les différentes occurrences collectées ont été réparties par codage thématique dans vingt-huit catégories émergeant de l’analyse de contenu. Nous avons ensuite procédé à une analyse quantitative par factorisation et échelonnement multidimensionnel (MDS) nous permettant d’en caractériser les relations conceptuelles et de les regrouper en huit dimensions réparties dans deux grands volets : les ressources personnelles et les comportements. Une grille de caractérisation du savoir-être présentant toute la diversité de la notion a ainsi émergé. La discussion questionne le rôle du contexte d’application dans la sollicitation des dimensions du savoir-être en situation et le développement des pratiques professionnelles associées.
La diffusion au sein d’un réseau d’acteurs hétérogènes des innovations sociales générées par l’écotourisme : le cas d’un parc national du Gabon
Authors: Mbongui-Kialo Sylvain
Published: July 2020

Cet article ne porte pas directement sur l’écotourisme mais sur les innovations sociales qu’il génère dans le contexte spécifique des territoires protégés. Les recherches antérieures ont considérablement amélioré la compréhension du rôle joué par les innovations sociales pour la lutte contre la pauvreté, la dégradation des ressources naturelles ou encore les évolutions sociodémographiques, laissant ouverte la question de la diffusion des innovations sociales émanant de l’activité écotouristique dans les aires protégées. Pour y répondre, nous nous appuyons sur l’analyse de contenu de 45 entretiens semi-directifs menés dans un parc national du Gabon. Nos résultats mettent en évidence le rôle majeur des stratégies de cooptation dans le traitement des controverses entre les parties prenantes qui bloquent la diffusion des innovations sociales générées par l’écotourisme. Les résultats sont discutés et permettent de présenter le processus de traduction à l’œuvre dans le cas étudié. Des recommandations à l’attention des praticiens sont également formulées. Notre étude débouche sur des pistes de recherche futures consistant notamment à approfondir l’apport des stratégies de cooptation dans la diffusion des innovations sociales issues de l’écotourisme auprès des parties prenantes réticentes.
La co-production dans les écoles primaires : revue systématique de littérature
Authors: Honingh Marlies , Bondarouk Elena , Brandsen Taco
Published: July 2020

La co-production est définie comme la participation des citoyens à la conception et la prestation de services. Dans les écoles primaires, la co-production consiste à faire coopérer les parents et les enseignants pour améliorer le développement éducatif des enfants. Dans cet article, nous présentons les résultats d’une revue systématique de la littérature de recherche sur la co-production dans les écoles primaires, afin de montrer quelles recherches ont été menées et quelles preuves de l’efficacité de la co-production ont été obtenues dans ce domaine. Après trois étapes successives de sélection des articles de recherche, un premier corpus de 3 121 articles a finalement été réduit à 122 articles, qui ont ensuite été analysés en détail. Généralement, la co-production dans le domaine de l’enseignement cible plutôt des publics particuliers, ce qui la rend difficile à généraliser, mais certaines conclusions paraissent pouvoir s’appliquer plus largement. La co-production semble effectivement améliorer l’acquisition du savoir par les élèves. Enfin, si les relations parents-enseignants peuvent parfois être difficiles et ambiguës, la formation des enseignants semble être un outil efficace pour améliorer les relations de co-production. Remarques à l’intention des praticiens Bien que la co-production à l’école soit de plus en plus répandue, son utilisation a surtout été testée avec des groupes socio-économiques particuliers. De nouveaux travaux sont nécessaires pour savoir si cette méthode gagnerait à être généralisée. La co-production à l’école requiert une approche sur mesure. Les conclusions des recherches suggèrent qu’elle n’est efficace que lorsqu’elle est adaptée au contexte. Il est donc fallacieux de parler de la co-production en milieu scolaire comme d’un phénomène univoque ; il existe de nombreuses formes de co-production à l’école. Investir dans la formation des enseignants se révèle utile pour surmonter les résistances initiales.
Phénoménologie du stop : la bureaucratie de proximité et la citoyenneté quotidienne des groupes marginalisés
Authors: Nisar Muhammad Azfar
Published: July 2020

L’accès limité à l’espace public pour les groupes marginalisés reste un thème peu étudié dans les recherches sur la citoyenneté dans l’administration publique. Afin de combler cette importante lacune dans la recherche, nous nous appuyons dans le présent article sur des méthodes de recherche ethnographiques pour étudier l’influence de la police de proximité sur la citoyenneté quotidienne des Khawaja Sira – un groupe marginalisé de transgenres au Pakistan. La citoyenneté au quotidien est considérée comme le droit inaliénable et constant de chaque citoyen d’être présent, visible et mobile dans l’espace public d’une communauté. La discussion souligne que par une application sélective de la loi, une hyper-surveillance et une police morale, les travailleurs de première ligne peuvent contribuer à restreindre la citoyenneté des groupes sociaux marginalisés. Nous examinons également les implications théoriques et pratiques qui soulignent les intersections entre mobilité, espaces quotidiens et interactions entre l’administrateur et le citoyen. Remarques à l’intention des praticiens Par une application sélective de la loi, une hyper-surveillance et une police morale, les travailleurs de première ligne peuvent contribuer à restreindre la citoyenneté des groupes sociaux marginalisés. L’accès à l’espace public est souvent refusé de manière disproportionnée aux groupes sociaux marginalisés comme les membres de la communauté LGBT. Les travailleurs de première ligne des différents services devraient être sensibilisés à l’identité et aux besoins spécifiques des groupes marginalisés afin d’améliorer la prestation de services de proximité.
La Chevalerie Ogier en alexandrins rimés : édition des quinze premières laisses
Authors: Ott Muriel , Winling Paloma
Published: July 2020

Édition critique des quinze premières laisses (594 vers) de la Chevalerie Ogier en alexandrins rimés à partir des quatre témoins manuscrits connus, cet article, issu d’un travail de recherche en Master mené par P. Winling sous la direction de M. Ott à l’Université de Strasbourg en 2015–2016, propose une autre hypothèse de datation de l’œuvre (à partir de 1360), précise la localisation en aire picarde nord-orientale, et met en évidence, dans l’extrait étudié, les qualités du manuscrit de Paris ( P ). Le texte édité d’après P est accompagné des variantes des trois autres manuscrits, de notes explicatives, et des rubriques qui figurent en tête de laisse dans le manuscrit de Chantilly.
Moyens d’orientation et de navigation des Vikings, marins accomplis en Atlantique Nord (fin VIII e –XI e siècles)
Authors: de Craecker-Dussart Christiane
Published: July 2020

Peu de contributions traitent des Vikings sous les aspects scientifiques et techniques. Le sujet traité ici tente de percer un des mystères de la navigation ancienne : comment les Vikings ont-ils pu traverser l’Atlantique Nord, sans carte ni itinéraire écrit ou boussole, pour aboutir en Amérique du Nord-Est, cinq siècles avant que Christophe Colomb ne découvre l’Amérique centrale ? Une étude critique et scientifique des sources et travaux relatifs aux principaux instruments suggérés – pierre de soleil, cadran de position et sablier, mais aussi log, sonde et girouette – ne permet pas de conclure à l’emploi des trois premiers, qui restent donc des hypothèses à confirmer. Par contre, une navigation rudimentaire à l’estime, à l’horizontale et surtout à vue (au jugé, au naturel et donc non instrumentale), sur des bateaux exceptionnels, permet de comprendre comment ces marins audacieux, mais prudents et chevronnés, ont pu relever un tel défi.
Maître : approche archéologique
Authors: Dubreucq Éric
Published: July 2020

Qu’il existe des maîtres, c’est une évidence quotidienne ; que la notion en soit instable et difficile en est peut-être une autre. Je propose d’esquisser une archéologie de cette problématisation en examinant deux points de repère discursifs situés au début du XX e  siècle : la conception normative du pouvoir magistral de Durkheim et celle, libertaire, de sa critique radicale par Neill. Mon propos ne sera pas d’inviter à trancher entre ces deux positions, mais bien plutôt à y repérer une antinomie pratico-discursive du pouvoir éducatif et de la subjectivation des enfants, du jeu qui s’installe, en eux, entre gouvernement de soi et gouvernement par autrui.
L’exemplarité des enseignants et des éducateurs
Authors: Dupeyron Jean-François
Published: July 2020

Parmi les différents aspects des « crises » touchant l’éducation scolaire contemporaine, la question de l’exemplarité de l’enseignant et de l’éducateur nous semble occuper une place non négligeable : les professionnels se trouvent chargés de la responsabilité d’incarner ou d’illustrer de façon irréprochable un modèle de comportement que l’institution scolaire, en raison de sa crise permanente, ne soutient guère par sa propre légitimité. Cet article étudie donc la question de l’éthique de l’exemplarité comme modèle possible d’action éducative : que signifie ce modèle ? Est-il pertinent et légitime ? L’argumentation se nourrit du retour aux Anciens (Plutarque, les Stoïciens, Montaigne) mais pose également de façon plus actuelle la question de la nature du savoir éthique construit ou transmis par les postures d’exemplarité.
Colimits of crossed modules in modified categories of interest
Authors: Aytekin Ali , Emir Kadir
Published: July 2020

In this paper, we give the constructions of the coequalizer and coproduct objects for the category of crossed modules, in a modified category of interest (MCI). In other words, we prove that the corresponding category is finitely cocomplete.
On simultaneous recovery of sources/obstacles and surrounding mediums by boundary measurements
Authors: Fang Xiaoping , Deng Youjun , Tsui Wing-Yan , Zhang Zaiyun
Published: July 2020

We consider a particular type of inverse problems where an unknown source embedded in an inhomogeneous medium, and one intends to recover the source and/or the medium by knowledge of the wave field (generated by the unknown source) outside the medium. This type of inverse problems arises in many applications of practical importance, including photoacoustic and thermoacoustic tomography, brain imaging and geomagnetic anomaly detections. We survey the recent mathematical developments on this type of inverse problems. We discuss the mathematical tools developed for effectively tackling this type of inverse problems. We also discuss a related inverse problem of recovering an embedded obstacle and its surrounding medium by active measurements.
Engineering Pedagogy: on the Way to "Education 4.0"
Authors: Polyakova Tatiana Yurievna
Published: July 2020

The Editorial continues the discussion on engineering education initiated by Editor-in-Chief of the journal Matthias Utesch and follows the submissions of Matthias Utesch, Manuel Castro, Elio Sancristobal, Thrasyvoulos Tsiatsos, and David Guralnick. It is devoted to the critical issues of Engineering Pedagogy in the past and at present.
Generalizable Models for Online Professional Learning Communities for America's K-12 Teachers
Authors: Johnson Jennie Larry , Khan Adil Akhtar
Published: July 2020

America's teachers are burning out. The emergence of teacher-centered online professional learning communities (PLCs) is a relatively new phenomenon with unestablished boundaries. The questions to be answered are: (1) What are the opportunities, issues, and challenges associated with online PLCs for K-12 teachers? (2) What are generalizable models for designing, implementing, and managing online PLCs for K-12 teachers? An exhaustive review gathered, organized, evaluated, coded, analyzed, and synthesized 45 relevant studies, dissertations, articles, and reports that examined online teacher PLCs. The goal was to identify and highlight conflicts, contradictory ideas among findings. The intent was to bridge gaps between theories and principles to create a common framework and generalizable models. This study was relevant because it sought to identify opportunities, issues, and challenges associated with online teacher PLCs and successful evidence-based micro-level, meso-level, and macro-level replicable practices for broader generalization.
Administration of Mega and Open Universities With Technological Singularity Beyond Master-Human
Authors: Sisman-Ugur Serap , Kurubacak Gulsun
Published: July 2020

The aim of this study is to foresee a futuristic view of how open universities can achieve their sustainability in the context of technological singularity. Technological singularity predicts that artificial intelligence will prevent human intelligence in the future. Not only can artificial intelligence radically change human habits, but it can also alter learning practices. The foundation of a revolutionary transformation on humanity learning will be established for both the open universities and for the technological singularity beyond master-human. Thus, open universities are not only sustainable, but, at the same time, they can be transformed into ecological learning environments. The framework of the internalizations and predictions of the study participants on open and distance learning environments will help us save open universities in the future.
Faculty Organizational Service
Authors: Bart William
Published: July 2020

The purpose of this chapter is to list and review some of the problems facing university faculty as they engage in their organizational service activities. University faculty members typically engage in three types of activities: (1) teaching and instruction, (2) research and scholarly compositions, and (3) service and organizational functioning. This chapter focuses on the third type of activities for university faculty members, namely, service and organizational functioning. For the purpose of simplicity, the expression “organizational service” will be used to replace the longer expression “service and organizational functioning.” This chapter will provide a list and a review of problems in organizational service for university faculty members. In addition to a listing of problems, the chapter will present possible solutions for the problems.
An Effective Pedagogy Toolkit for Learning in an Intelligent Virtual Environment
Authors: Kamath R. S. , Kamat R. K.
Published: July 2020

Throughout the progression of the pedagogy, educators are striving hard to bring up the systems centering on effective learning. This omnipresent trend has led to the ontogeny of innovative and culmination of many congregation technologies such as virtual reality (VR), artificial intelligence (AI), and natural language processing (NLP) ensuing as intelligent virtual learning environment (IVLE). Technology-enhanced encyclopedism can facilitate pupils with influential and high-quality learning experiences as compared to the traditional learning approach. This chapter portrays learning in intelligent virtual environment as an effective pedagogy approach. The pedagogic tool developed by the authors captures text written in English as an input and creates the envisioned virtual setting. The ability of natural language interface (NLI) for VR-based learning systems is the most significant attainment of the present work, which brings a novel perspective in the field pedagogy.
Rodent LD50 Tests
Authors: Dearden John C.
Published: July 2020

Rodent LD50 values have been used for almost a century as a measure of potential human toxicity from drugs and other chemicals. However, they have been found not, on the whole, to be good models for human toxicity. One reason for this could be the often-high variability of LD50 values. It has recently been shown that by using median LD50 values, very good correlations have been found with human lethal dosages. Bearing in mind the millions of rodent lives sacrificed, many with no good reason, it is proposed that some reparation could be made by more investigations using median values of already available rodent LD50 values.
Chemometric Modeling of Structurally Diverse Carbamates for the Inhibition of Acetylcholinesterase (AChE) Enzyme in Alzheimer's Disease
Authors: Kumar Vinay , Saha Achintya
Published: July 2020

In this research, we have developed two-dimensional quantitative structure-activity relationship (2D-QSAR) and group-based QSAR (GQSAR) models employing a dataset of 78 carbamate derivatives (acetylcholinesterase enzyme inhibitors). The developed models were validated using various stringent validation parameters. From the insights obtained from the developed 2D-QSAR and GQSAR models, we have found that the structural features appearing in the models are responsible for the enhancement of the inhibitory activity against the AChE enzyme. Furthermore, we have performed the pharmacophore modeling to unveil the structural requirements for the inhibitory activity. Additionally, molecular docking studies were performed to understand the molecular interactions involved in binding, and the results are then correlated with the requisite structural features obtained from the QSAR and pharmacophore models.
Ethical Computing for Data Protection
Authors: Lee Wanbil W.
Published: July 2020

Data protection is a chronic problem. Technology has had a social and ethical impact on our professional, social, and private lives. It is imperative for computing practitioners and researchers to link the ethical dilemmas and the technologies to the relevant ethical theories. This paper argues that the cause is rooted in our indifference to ethics—one doesn't take ethics as seriously into consideration as one should when formulating information security policies and protection standards—and proposes an ethics-based approach that can lessen the incidence of hacking or make hacking exasperate, aiming at mitigation rather than eradication. Central to this approach is ethical computing preconditioned on a sound understanding of the applicable theories of ethics and a shift of view of risk and ethics.
Perceptions and Attitudes of Future Primary Education Teachers on Technology and Inclusive Education
Authors: Pinto-Llorente Ana María , Sánchez-Gómez María Cruz
Published: July 2020

The goal of the current research was to explore the perceptions of the students in the last year of a degree in Primary Education towards technology and inclusive education. It employed a mixed method research with a combined use of qualitative and quantitative methods. The research population was comprised of 153 learners, and the quantitative sample consisted of 104 participants and the qualitative one 57. Quantitative data collection was conducted using a validated questionnaire, while the qualitative data were collected through individual semi-structured interviews. On analysing the results, it was emphasized the effectiveness of technology to design and implementation of inclusive practices. However, the results also pointed out the necessity to train students technically as well as pedagogically in the use of technological tools. Moreover, it was highlighted the lack of training in inclusive education and inclusive practices during the degree, training that students considered essential to be ready for their future careers.
Training on Social Economy Entrepreneurship
Authors: Padilla-Zea Natalia , Aceto Stefania , Burgos Daniel
Published: July 2020

Social PlaNet is a gamified learning platform to train social economy entrepreneurship, which has been developed in the Social Seducement Erasmus+ project. The main aim of this project is offering a labour option to long-term unemployed people in scenarios with poor working offers by promoting self-employment and local development. As a result of the shared work of partners from different disciplines, Social PlaNet has been developed based on the selection of a good pedagogical approach, the challenges of managing disadvantaged groups of people and the need to increase motivation while keeping the process similar to reality. From this research, the gamification approach inserted in a graphic scenario has been revealed as a good option to promote the acquisition of soft and inter-personal skills. Furthermore, the figure of facilitator is a engine to foster, guide and monitor the group of these groups of potential social entrepreneurs.
CD11c+ T-bet+ B Cells Require IL-21 and IFN-γ from Type 1 T Follicular Helper Cells and Intrinsic Bcl-6 Expression but Develop Normally in the Absence of T-bet
Authors: Levack Russell C. , Newell Krista L. , Popescu Maria , Cabrera-Martinez Berenice , Winslow Gary M.
Published: July 2020

CD11c+ T-bet+ B cells generated during ehrlichial infection require CD4+ T cell help and IL-21 signaling for their development, but the exact T cell subset required had not been known. In this study, we show in a mouse model of Ehrlichia muris that type 1 T follicular helper (TFH1) cells provide help to CD11c+ T-bet+ B cells via the dual secretion of IL-21 and IFN-γ in a CD40/CD40L-dependent manner. TFH1 cell help was delivered in two phases: IFN-γ signals were provided early in infection, whereas CD40/CD40L help was provided late in infection. In contrast to T-bet+ T cells, T-bet+ B cells did not develop in the absence of B cell–intrinsic Bcl-6 but were generated in the absence of T-bet. T-bet–deficient memory B cells were largely indistinguishable from their wild-type counterparts, although they no longer underwent switching to IgG2c. These data suggest that a primary function of T-bet in B cells during ehrlichial infection is to promote appropriate class switching, not lineage specification. Thus, CD11c+ memory B cells develop normally without T-bet but require Bcl-6 and specialized help from dual cytokine-producing TFH1 cells.
SARS-CoV-2 as a Factor to Disbalance the Renin–Angiotensin System: A Suspect in the Case of Exacerbated IL-6 Production
Authors: Franco Rafael , Rivas-Santisteban Rafael , Serrano-Marín Joan , Rodríguez-Pérez Ana I. , Labandeira-García José L. , Navarro Gemma
Published: July 2020

Fever in infections correlates with inflammation, macrophage infiltration into the affected organ, macrophage activation, and release of cytokines involved in immune response, hematopoiesis, and homeostatic processes. Angiotensin-converting enzyme 2 (ACE2) is the canonical cell surface receptor for SARS-CoV-2. ACE2 together with angiotensin receptor types 1 and 2 and ACE2 are components of the renin–angiotensin system (RAS). Exacerbated production of cytokines, mainly IL-6, points to macrophages as key to understand differential COVID-19 severity. SARS-CoV-2 may modulate macrophage-mediated inflammation events by altering the balance between angiotensin II, which activates angiotensin receptor types 1 and 2, and angiotensin 1–7 and alamandine, which activate MAS proto-oncogene and MAS-related D receptors, respectively. In addition to macrophages, lung cells express RAS components; also, some lung cells are able to produce IL-6. Addressing how SARS-CoV-2 unbalances RAS functionality via ACE2 will help design therapies to attenuate a COVID-19–related cytokine storm.
Establishment and internal validation of preoperative nomograms for predicting the possibility of testicular salvage in patients with testicular torsion
Authors: Zheng Wan-Xiang , Hou Guang-Dong , Zhang Wei , Wei Di , Gao Xue-Lin , Chen Mei-Hong , Huang Lu-Guang , Yan Fei , Zhang Geng , Yu Lei , Liu Fei , Zhang Bo , Yuan Jian-Lin
Published: July 2020

This study aimed to establish nomograms to preoperatively predict the possibility of testicular salvage (TS) in patients with testicular torsion. The clinical data of 204 patients with testicular torsion diagnosed at Xijing Hospital and Tangdu Hospital (Xi'an, China) between August 2008 and November 2019 were retrospectively analyzed. Univariate and multivariate logistic regression analyses were used to determine the independent predictors of TS. Based on multivariate regression coefficients, nomograms to predict possibility of TS were established. The predictive ability of the nomograms was internally validated by receiver operating characteristic (ROC) curves and calibration plots. The duration of symptoms ranged from 2 h to 1 month, with a median of 3.5 days. Thirty (14.7%) patients underwent surgical reduction and contralateral orchiopexy, while the remaining 174 (85.3%) underwent orchiectomy and contralateral orchiopexy. Finally, long symptom duration was an independent risk predictor for TS, while visible intratesticular blood flow and homogeneous testicular echotexture under color Doppler ultrasound were independent protective predictors. Internal validation showed that the nomograms, which were established by integrating these three predictive factors, had good discrimination ability in predicting the possibility of TS (areas under the ROC curves were 0.851 and 0.828, respectively). The calibration plots showed good agreement between the nomogram-predicted possibility of TS and the actual situation. In conclusion, this brief preoperative prediction tool will help clinicians to quickly determine the urgency of surgical exploration.
Temporal and Bathymetric Variation of Epiphytic Microalgae on Posidonia oceanica (L.) Delile Leaves in Gökçeada (North Aegean, Turkey)
Authors: Guresen Aysu , Guresen Sedat Ozan , Aktan Yelda
Published: July 2020

Epiphytic microalgae attached to Posidonia oceanica leaves play a significant role through primary production, nutrient cycling and trophic fluxes in benthic ecosystems. Due to their sensitivity, epiphytic microalgae respond to environmental alterations more quickly than their host. The aim of this study is therefore to evaluate the ecological quality in Gökçeada Underwater Park (North Aegean) using epiphytic microalgal composition and abundance. In this respect, P. oceanica shoots are collected at 6m, 15m and 28m in May, July, October 2009 and January 2010 to estimate the microalgal composition and abundance. Also, P. oceanica descriptors and physico-chemical parameters in the water column of the meadow lower limit are measured. Leaf surface improvement through greater depths, have provided a convenient substratum for epiphytic colonization. A total of 56 taxa belonging to epiphytic microalgae are composed of Bacillariophyceae (91%), Cyanophyceae (7%) and Dinophyceae (2%). Temporal and bathymetric dynamics of the epiphytic community structure and abundance depend on the environmental parameters; such as leaf surface, nutrients and turbidity. Also, a mucilage phenomenon, resulted in a low diversity due to the dominancy of filamentous cyanobacteria. Necessary data is supplied for a less evaluated region affected by agricultural activities and urbanization in the recent years.
Havacılık Alanında Kullanılan Birleştirme Yöntemleri
Authors: BAŞTEKELİ Emin Orhun
Published: July 2020

Günümüzde helikopter ve uçak gibi uçan platformların motor ve gövde parçalarının imalatı büyük ölçüde çözülebilir ve çözülemez birleştirme tekniklerine dayanmaktadır. Özellikle çözülemez birleştirme tekniklerinin kullanıldığı kısımlarda ise sınırlı yerlerde yapıştırıcı kullanılmakta, ancak büyük ölçüde perçin, kaynak ve lehim bağlantıları kullanılmakta ve gün geçtikçe bağlantı verimliliği yüksek ve yeni, daha hafif ve dayanıklı birleştirme prosesleri üzerine çalışmalar yapılmaktadır. Özellikle yerli ve milli uçak ve helikopter yapımına hız verildiği şu günlerde, ülkemiz adına bu birleştirme tekniklerinin ve birleştirme felsefesinin anlaşılması ülkemiz mühendisleri için daha büyük önem arz etmektedir. Bu çalışmada hava taşıtlarının imalinde yoğun olarak kullanılan birleştirme teknolojileri, malzemeleri ve birleştirme konsepti ile ilgili genel kapsamda bilgi verilmekte ve güncel teknolojiler anlatılmaktadır.
The effect of polishing agents on the transverse strength of heat cured acrylic resin bases
Authors: Suraskurmar Tiysha , Syafrinani Syafrinani
Published: July 2020

Introduction: Heat cured acrylic resin is frequently used denture base material whereby transverse strength is one of the mechanical properties that must be observed. A rough surface absorbs water, reduces strength of denture bases, thus polishing should be done. Pumice is the most abrasive material used in dentistry. Eggshell and tooth-paste can be used as alternative abrasive materials. This study aims to determine the differences in value of trans-verse strength of HCA resin once polished using pumice, eggshells, and toothpaste. Method: This laboratory ex-perimental study using sample sized 65x10x2.5 mm with 30 samples in total for 3 groups. Transverse strength was measured using Universal Testing Machine. The data were analyzed using one-way Anova. Result: The comparison ratio of transverse strength between HCA resin after polishing with pumice, eggshells and tooth paste is 93.63 : 118.42 : 105.91 MPa. It shows there were significant differences in transverse strength between groups with sig-nificant value p was 0.001 which less than 0.05. Conclusion: The value of transverse strength varies according to polishing material used. Eggshell has the highest transverse strength value compared to pumice and toothpaste.
Augustine’s Theological Method And Contribution To The Christian Theology
Authors: Objantoro Enggar
Published: July 2020

Today, the world is influenced by many views, such as secularism and atheism, which affect many people, so they are far from God.  Because of them, moral and ethical standards are not based on the belief of God, but just on the humanity standard.  For Christianity, the views cause many of God's believers to leave the Scripture's truths.  To solve the problem, Christians must learn from the Christian theologian who has a significant contribution to Christian theology.  One of the Christian theologians is Augustine.  Augustine was one of Christian’s famous theologians, in which his theology/thoughts are influenced Christian theology today.  This research uses a library research method to explore Augustine's ideas.  The books that expose about Augustine's views are used to find Augustine's theology.  The result of the research is that Augustine's theology is necessary and relevant to Christian's theology today to confront the world's views so that the people of God do not live far from God.
Dayak Tunjung Cosmology and the Theology of Communio Sanctorum An Exploration of Contextual Theology in Synthetic Model of Stephen B. Bevans
Authors: Damianus Yohanes
Published: July 2020

The revelation of God through the history is being permeated in human beings’ culture. Eventually, its proclamation too brought in itself the culture elements. Since, the culture itself is holy, because it is exactly part of the revelation, and one culture can be in dialogue with other (s) one because God has taken the culture as a context for His own revelation. In missiology, theological reflection tries to further offer and define what the church has been doing since its presence, a practice of a contextual theological reflection. In this space of thought, the church doctrine on communio sanctorum will be in dialogue with a Dayak Tunjung cosmology, an effort to make a synthesis between theology and culture so that the two communities can live and grow together in their respective traditions. The synthetic model of contextual theology offered by Stephen B. Bevans will be used as a framework. The reflection will go to make a synthetic model of theology of Dayak Tunjung cosmology and communio sanctorum in its three categories, mainly cosmological, ritual, and communal life. God, through his Holy Spirit, continuously renews the human beings together with their whole culture aspects.
Penerapan Metode Profile Matching Pada Sistem Pendukung Keputusan Untuk Memilih Calon Penerima Beasiswa Bidikmisi
Authors: Fasya Firmanda , Arifin Muchamat Zainal , Muttaqin Zenal , Sukur Rahmat Saleh , Kusrini Kusrini
Published: July 2020

Penetilian ini bersifat eksperimen dengan melakukan analisis perhitungan dengan Microsoft Excell yang menerapkan metode Profile Matching untuk memilih penerima beasiswa Bidikmisi. Persyaratan-persyaratan dalam aturan pemberian beasiswa Bidikmisi diimplementasikan menjadi kriteria-kriteria pada proses perhitungan dalam Microsoft Excell untuk menghasilkan suatu keluaran yang berisi informasi perankingan nilai prioritas para calon penerima beasiswa Bidikmisi. Informasi nilai prioritas ini dapat dipakai untuk mengetahui calon mana yang berhak menerima maupun yang tidak berhak menerima beasiswa Bidikmisi. Kata Kunci— Beasiswa, Eksperimen, Memilih, Perhitungan, , Penerima.
SISTEM PENDUKUNG KEPUTUSAN PENGUKUR KINERJA KARYAWAN PADA RUMAH MAKAN WONG SOLO KEDIRI MENGGUNAKAN METODE TOPSIS
Authors: Saharlan Ellita , Suryawan Muhaji Bayu
Published: July 2020

Saat ini rumah makan Wong Solo masih menggunakan cara manual  untuk mengetahui kelompok karyawan yang berprestasi dan kurang kompeten, maka dari itu dibuatlah sebuah penelitian yang berjudul “Sistem Pendukung Keputusan Pengukur Kenierja Karyawan pada Rumah Makan Wong Solo Kediri Menggunakan Metode TOPSIS (Technique For Other Reference by Similarity Ideal Solution), Tujuan penelitian ini adalah mampu mengimplementasikan metode TOPSIS dalam sistem pendukung keputusan untuk mengukur kinerja karyawan dan mampu membangun sistem pendukung keputusan yang membantu mengukur kinerja Karyawan Wong Solo.Metode penelitian ini menggunakan beberapa tahapan yaitu: menyusun perencanaan, melaksanakan tindakan, melaksanakan pengamatan, melakukan refleksi. Adapun sumber data diperoleh dari observasi, wawancara, dan study Literature. Kemudian Landasan teori yang akan digunakan dalam sistem pendukung keputusan penilai kinerja karyawan rumah makan Wong Solo dengan Metode TOPSIS.Berdasarkan analisa data yang dilakukan, diperoleh kesimpulan bahwa Metode TOPSIS dapat diterapkan ke dalam sistem pendukung keputusan pengukur kinerja karyawan yang digunakan sebagai rekomendasi HRD rumah makan Wong Solo Kediri untuk menentukan karyawan terbaik dan terburuk. Perhitungan menggunakan  Metode ini sesuai dengan perhitugan manual. Diharapkan dengan adanya sistem ini, pihak Rumah Makan Wong Solo khususnya HRD dapat mengukur kinerja karyawan dengan lebih efisien dan cepat dari pada dengan cara manual.
SISTEM INFORMASI EKSPEDISI PENGIRIMAN PAKET DAN DOKUMEN BERBASIS WEB MENGGUNAKAN PHP DAN MYSQL PADA PT. KERTA GAYA PUSAKA
Authors: Wijayanti Nike , Abijono Heri
Published: July 2020

Tugas akhir ini merancang sistem tracking ekspedisi pada Kerta Gaya Pusaka yang bermanfaat untuk pengguna, agar dapat menawarkan dan menyebarkan informasi yang baik dengan mudah dan cepat serta dapat memberikan inspirasi kepada pembaca untuk mengetahui informasi ekspedisi termudah. Pembuatan sistem tracking dilakukan dengan menggunakan pemrograman website sehingga memudahkan pengguna dalam mendapatkan informasi. Metode penelitian yang digunakan berdasarkan informasi secara langsung dan akurat, sehingga dapat memperoleh sasaran yang tepat bagi pengguna. Perancangan sistem menggunakan bahasa pemrograman  PHP dan database MySQL yang dipublikasikan dari hosting online sebagai editor dan domain berbayar sebagai alamat website. Hasil yang diharapkan dapat diperoleh secara tepat sasaran bagi pengguna. Sehingga website ekspedisi menjadi salah satu praktik terbaik dalam pengembangan ilmu
Sistem Pendukung Keputusan Seleksi Atlet Panahan menggunakan Logic Fuzzy metode AHP-TOPSIS
Authors: Praningki Tutus , Bayu Muhaji , Pramono Agus
Published: July 2020

Panahan adalah cabang olahraga di induk organisasi PERPANI. Pelatihan yang dibentuk guna mencitakan atlet panaha terbaik dalam perkembangannya selalu berudaha mengikuti kejuaraan dengan langkah pelatihan atlet panahan secara teratur. Proses seleksi atlet pada PERPANI dinilai masih manual dan belum terperinci. Dalam penilaian yang bersifat subjektif (berdasarkan kepentingan pribadi), dapat menimbulkan kecemburuan pada proses penyeleksian seorang atlet. Diperlukan sebuah sistem guna membantu solusi tersebut, sistem dengan Logic Fuzzy metode AHP-TOPSIS dipilih untuk menyeleksi atlet panahan. Penulis menggunakan 6 kriteria dan 24 subkriteria dalam sistem. Proses penentuan bobot kriteria menggunakan Logic Fuzzy pada perhitungannya. Penelitian ini menggunakan Bahasa perograman PHP dan menggunakan MySQL sebagai basisdatanya. Penelitian ini berhasil memberikan hasil sistem pendukung keputusan menggunakan Logic Fuzzy metode AHP-TOPSIS mampu mengatasi permasalah dalam melakukan seleksi atlet panahan. Kata Kunci: MySQL, Seleksi Atlet Panahan, PHP, Logic Fuzzy, AHP-TOPSIS
Yeni Nesil Çevreci Kompozit Traversler
Authors: YAZICI Ozan
Published: July 2020

Dünyanın farklı bölgelerinde birçok kompozit travers teknolojisi geliştirilmiştir. Bu teknolojiler geleneksel traversler olarak nitelenen çelik travers, ahşap travers ve beton traverslere potansiyel bir alternatif olarak ortaya çıkmıştır. Çelik ve betondan farklı olarak kompozit traversler, ahşap travers davranışını taklit edecek şekilde tasarlanabilir ve neredeyse bakım gerektirmeyip, çevresel açıdan daha üstündürler. Bu çalışma kapsamında demiryollarında farklı miktar ve uzunluklarda fiber içeren Tip 1, Tip 2 ve Tip 3 gibi kompozit traversler hakkında bilgi verilerek bu traverslerin kullanımı ve performans karşılaştırılması detaylı olarak yapılmıştır. Kompozit traversler ile konvansiyonel tip olan ahşap, çelik ve beton traverslerin karşılaştırılması yapılmış olup kompozit traverslerin kullanımı sırasında meydana gelen zorluklardan bahsedilerek bu traverslerin demiryollarında geniş çapta kullanım alanı bulabilmesi için hem teknik hem de maliyet açısından ne gibi hususları karşılamaları gerektiği hakkında tavsiyelerde bulunulmuştur.
Demiryolu Yol Altyapısının Parçalanmış Atık Lastik - Kum Karışımları ile Stabilizasyonu
Authors: UMU Seyfettin Umut , OKUR Derviş Volkan
Published: July 2020

Atık lastiklerin, inşaat mühendisliği uygulamalarında kullanımı son 30-40 yıl içinde oldukça yaygınlaşmıştır. Geoteknik mühendisliği uygulamalarında olumlu sonuçlar elde edilmiştir. Yol inşaatlarındaki stabilite ve oturma problemlerine karşı, istinat ve dolgu duvarlarında ise hafif malzeme ihtiyacına karşılık geri dolgu malzemesi olarak kullanılmaktadırlar. Çalışmanın amacı yapay olarak oluşturulan demiryolu altyapısına etki eden tekrarlı yükler altında malzeme davranışının incelenmesidir. Bu çalışmada, demiryolu altyapısı temel malzemesi olarak seçilen temiz standart kum örneği ile atık araç lastiklerinden parçalama ve öğütülme yolu ile elde edilen toz, çubuk ve amorf malzeme kütlece %5/95, %10/90 ve %15/85 oranlarında karıştırılmış ve oluşturulan karışım numuneler üzerinde rezonant kolon (RC) deneyleri yapılmıştır. Elde edilen veriler, 100 kPa efektif basınç altında, %5 oranında toz atık lastik karışımı içeren numunelerin kayma modüllerinin, 100 kPa referans örneğe göre, %0,001 birim kayma deformasyon seviyelerinde %26, %0,01 birim kayma deformasyon seviyelerinde %18 ve %0,1 birim kayma deformasyon seviyelerinde ise %35 civarında daha yüksek olduğunu göstermiştir.
Evaluation of the Effect of Caffeine on the Cerebellar Cortex of Mercury Treated Wistar Rats
Authors:   Department of Human Anatomy, Faculty of Basic Medical Sciences, Ahmadu Bello University Zaria, Nigeria, Ema Emem-Obong , Musa Sunday ,   Department of Human Anatomy, Faculty of Basic Medical Sciences, Ahmadu Bello University Zaria, Nigeria, Iliya Ibrahim ,   Department of Human Anatomy, Faculty of Basic Medical Sciences, Federal University, Dutse, Nigeria
Published: July 2020

Mercury is a toxic heavy metal that constitutes a significant environmental and health problem, with evidences indicating the central nervous system as the main target. This study was therefore designed to evaluate the effect of caffeine on the histology of the cerebellum of mercury treated Wistar rats. Twenty adult male Wistar rats were distributed into four groups (n=4). Administration was as follows: Control (distilled water, 1 ml/kg), mercury chloride (HgCl2), 16.6 mg/kg body weight, low dose caffeine (20.7 mg/kg) with mercury chloride (16.6 mg/kg), high dose caffeine (41.5 mg/kg) with mercury chloride (16.6 mg/kg). The administrations lasted for 28 days via oral route daily. Histological evaluation was carried out with haematoxylin and eosin, and cresyl violet stains. Beam walking test (BWT) for motor coordination was carried out. Alteration in the cerebellar cortex histoarchitecture seen in mercury chloride group was ameliorated in the groups treated with caffeine. The result of BWT test showed an increase in the time taken to locate the platform after mercury chloride administration but was decreased after administration of caffeine (p>0.05). The administration of caffeine protect against mercury chloride toxicity to the cerebellum of Wistar rats.
Cultural Transfer and Bilinguslism in the documentary 389 Miles: Living the Border by Luis Carlos Davies
Authors: Van Hecke An
Published: July 2020

A utilização de múltiplas línguas nos filmes envolve frequentemente a estereotipagem negativa de personagens pertencentes à uma minoria representada nesses filmes. É o caso de alguns filmes de Hollywood em que o espanhol está associado a personagens exóticos ou perigosos, confirmando de forma persistente a posição dominante da língua inglesa. No documentário 389 Miles: Living the Border (2009), o impacto linguístico e cultural da migração é visto de uma perspectiva bastante diferente. Enquanto a maioria dos documentários sobre a fronteira méxico-americana é predominantemente em inglês, possivelmente com legendas em espanhol, ou principalmente em espanhol com legendas em inglês, em 389 Miles ambas as línguas são utilizadas de forma igual. O narrador conta a história em inglês, mas utiliza ambas as línguas nas entrevistas. Há também alguns personagens que mudam do inglês para o espanhol. O objetivo deste artigo é triplo: numa primeira instância, procura examinar o documentário com o uso de alguns conceitos básicos da Teoria dos Polissistemas. O segundo objetivo é explorar a diversidade linguística. Numa terceira instância, este artigo pretende lançar mais luz sobre dois poderosos símbolos mexicanos: a Virgem de Guadalupe e a máscara do lutador. O objetivo final é descobrir como o bilinguismo nos documentários muda a nossa percepção sobre outras culturas, a travessia de fronteiras e a migração.
Application of low-cost fine particulate mass monitors to convert satellite aerosol optical depth to surface concentrations in North America and Africa
Authors: Malings Carl , Westervelt Daniel M. , Hauryliuk Aliaksei , Presto Albert A. , Grieshop Andrew , Bittner Ashley , Beekmann Matthias ,   R. Subramanian
Published: July 2020

Abstract. Low-cost particulate mass sensors provide opportunities
to assess air quality at unprecedented spatial and temporal resolutions.
Established traditional monitoring networks have limited spatial resolution
and are simply absent in many major cities across sub-Saharan Africa (SSA).
Satellites provide snapshots of regional air pollution but require
ground-truthing. Low-cost monitors can supplement and extend data coverage
from these sources worldwide, providing a better overall air quality
picture. We investigate the utility of such a multi-source data integration
approach using two case studies. First, in Pittsburgh, Pennsylvania, both
traditional monitoring and dense low-cost sensor networks are compared with
satellite aerosol optical depth (AOD) data from NASA's MODIS system, and a
linear conversion factor is developed to convert AOD to surface fine
particulate matter mass concentration (as PM2.5). With 10 or more
ground monitors in Pittsburgh, there is a 2-fold reduction in surface
PM2.5 estimation mean absolute error compared to using only a single
ground monitor. Second, we assess the ability of combined regional-scale
satellite retrievals and local-scale low-cost sensor measurements to improve
surface PM2.5 estimation at several urban sites in SSA. In Rwanda, we
find that combining local ground monitoring information with satellite data
provides a 40 % improvement in surface PM2.5 estimation accuracy with
respect to using low-cost ground monitoring data alone. A linear AOD-to-surface-PM2.5 conversion factor developed in Kigali, Rwanda, did not
generalize well to other parts of SSA and varied seasonally for the same
location, emphasizing the need for ongoing and localized ground-based
monitoring, which can be facilitated by low-cost sensors. Overall, we find
that combining ground-based low-cost sensor and satellite data, even without
including additional meteorological or land use information, can improve and
expand spatiotemporal air quality data coverage, especially in data-sparse
regions.