bluuebunny/crossref_metadata_2025 huggingface dataset:
RESEARCH ON THE NOISE POLLUTION FROM DIFFERENT VEHICLE CATEGORIES IN THE URBAN AREA
Authors: Danilevičius Algimantas , Karpenko Mykola , Křivánek Vítězslav
Published: March 2023

The noise pollution inside urban areas is one of the common problems for the inhabitants. The different levels of a noise are generated from the large amount of sources, including traffic flow on a road of urban areas. Therefore, it is essential to measure and evaluate the road traffic noise in urban areas and its population exposure in order to obtain models of a traffic noise as well as the noise mapping. The current research includes establishing a traffic noise from the different types of vehicles caused by the speed in urban areas and different road pavements (dry, wet and covered with a snow) with generalising the obtained data for more accurate using in future traffic noise models and the noise mapping. The study region is Vilnius (Lithuania), the speed range for different categories of the vehicles in the collected data is 40…130 km/h, with wide ranges of a noise level 20…180 dB. The approach presented in this research of experimental measurements is based on Statistical Pass-By (SPB) method with data proceeding upon implementation of Pearson correlation coefficient. In course of the analysis of the obtained results, it was found that the level of the curves of noise depends on the vehicles’ speed what corresponds to the best-measured values and can be used in the traffic noise models and the noise mapping.
Modeling the Solar Corona with an Implicit High-order Reconstructed Discontinuous Galerkin Scheme
Authors: Liu XiaoJing , Feng Xueshang , Zhang Man , Zhao Jingmin
Published: March 2023

The present study aims to apply an implicit high-order reconstructed discontinuous Galerkin (DG) scheme (rDG(P
1
P
2)) to simulate the steady-state solar corona. In this scheme, a piecewise quadratic polynomial solution, P
2, is obtained from the underlying piecewise linear DG solution, P
1, by least-squares reconstruction with a weighted essentially nonoscillatory limiter. The reconstructed quadratic polynomial solution is then used for the computation of the fluxes and source terms. In addition, an implicit time integration method with large time steps is considered in this work. The resulting large linear algebraic system of equations from the implicit discretization is solved by the cellwise relaxation implicit scheme which can make full use of the compactness of the DG scheme. The code of the implicit high-order rDG scheme is developed in Fortran language with message passing interface parallelization in Cartesian coordinates. To validate this code, we first test a problem with an exact solution, which confirms the expected third-order accuracy. Then we simulate the solar corona for Carrington rotations 2167, 2183, and 2210, and compare the modeled results with observations. We find that the numerical results basically reproduce the large-scale observed structures of the solar corona, such as coronal holes, helmet streamers, pseudostreamers, and high- and low-speed streams, which demonstrates the capability of the developed scheme.
Identifying 46 New Open Cluster Candidates in Gaia EDR3 Using a Hybrid pyUPMASK and Random Forest Method
Authors: Chi 迟 Huanbin 焕斌 , Wei 卫 Shoulin 守林 , Wang 王 Feng 锋 , Li 李 Zhongmu 忠木
Published: March 2023

Open clusters (OCs) are regarded as tracers to understand stellar evolution theory and validate stellar models. In this study, we presented a robust approach to identifying OCs. A hybrid method consisting of pyUPMASK and the random forest (RF) algorithm is first used to remove field stars and determine more reliable members. An identification model based on the RF algorithm built based on 3714 OC samples from Gaia DR2 and EDR3 is then applied to identify OC candidates. The OC candidates are obtained after isochrone fitting, advanced stellar population synthesis model fitting, and visual inspection. Using the proposed approach, we revisited 868 candidates and preliminarily clustered them by the friends-of-friends algorithm in Gaia EDR3. Excluding OCs that have already been reported, we focused on the remaining 300 unknown candidates. From high to low fitting quality, these unrevealed candidates were further classified into Class A (59), Class B (21), and Class C (220). As a result, 46 new reliable OC candidates among Classes A and B are identified after visual inspection.
Resurrection of Type IIL Supernova 2018ivc: Implications for a Binary Evolution Sequence Connecting Hydrogen-rich and Hydrogen-poor Progenitors
Authors: Maeda Keiichi , Michiyama Tomonari , Chandra Poonam , Ryder Stuart , Kuncarayakti Hanindyo , Hiramatsu Daichi , Imanishi Masatoshi
Published: March 2023

Long-term observations of synchrotron emission from supernovae (SNe), covering more than a year after the explosion, provide a unique opportunity to study the poorly understood evolution of massive stars in the final millennium of their lives via changes in the mass-loss rate. Here we present a result of our long-term monitoring of the peculiar Type IIL SN 2018ivc using the Atacama Large Millimeter/submillimeter Array. Following the initial decay, it showed unprecedented rebrightening starting ∼1 yr after the explosion. This is one of the rare examples showing such rebrightening in the synchrotron emission and the first case at millimeter wavelengths. We find it to be in the optically thin regime, unlike the optically thick centimeter emission. As such, we can robustly reconstruct the distribution of the circumstellar matter and thus the mass-loss history in the final ≳1000 yr. We find that the progenitor of SN 2018ivc had experienced a very high mass-loss rate (≳10−3
M
⊙ yr−1) ∼1500 yr before the explosion, which was followed by a moderately high mass-loss rate (≳10−4
M
⊙ yr−1) up until the explosion. From this behavior, we suggest that SN 2018ivc represents an extreme version of a binary evolution toward SNe IIb, which bridges the hydrogen-poor SNe (toward SNe Ib/c, without a hydrogen envelope) and hydrogen-rich SNe (SNe IIP, with a massive envelope).
Inventory of tiger and ground beetles (Coleoptera, Caraboidea: Cicindelidae and Carabidae) in two sampling seasons of the Gorongosa National Park
Authors: Serrano Artur , Baptista Martim , Carvalho Rui , Boieiro Mário , Mendes Sara , Bartz Marie , Timóteo Sérgio , Azevedo-Pereira Henrique , Aguiar Carlos , Alves da Silva António , Alves Joana , Briones Maria , Borges Paulo , Sousa José , Martins da Silva Pedro
Published: March 2023

The Gorongosa National Park (Mozambique) is one of the most emblematic protected areas in Africa, well known for its vertebrate biodiversity and restoration ecology efforts following the Mozambican civil war in 1992. The invertebrate biodiversity of Gorongosa National Park is still poorly studied, although the scarce information available indicates the existence of a rich number of species, particularly ground-beetles. The study of Caraboidea beetles is key for designing conservation practices since they are frequently used as biodiversity and ecological indicators and provide valuable information to help decision making. Therefore, the diversity assessment of Caraboidea beetles using standardized methodologies, can be used to quantify the effects of climate change in areas identified as vulnerable to antropogenic pressures, such as the Gorongosa National Park

We report the occurrence of five tiger beetles (Cicindelidae) and 93 ground beetles (Carabidae) species/morphospecies in Gorongosa National Park from a field survey funded by the ECOASSESS project. Sampling was performed in the four main habitat types present in the park (miombo tropical forest, mixed dry forest, transition forest and grasslands) between October 25th and November 25th. In this sampling window, the turnover of Caraboidea species from the dry season to the wet season was recorded for the first time. Twenty-seven species of ground-beetles are new records to Mozambique, including three new subgenera and two new genera. Additional information on species phenology and habitat preferences is also provided.
Two new species of Diaporthe (Diaporthaceae, Diaporthales) in China
Authors: Zhu Ya-Quan , Ma Chun-Yan , Xue Han , Piao Chun-Gen , Li Yong , Jiang Ning
Published: March 2023

Species of Diaporthe have been reported as plant endophytes, pathogens and saprobes on a wide range of plant hosts. Strains of Diaporthe were isolated from leaf spots of Smilax glabra and dead culms of Xanthium strumarium in China, and identified based on morphology and molecular phylogenetic analyses of combined internal transcribed spacer region (ITS), calmodulin (cal), histone H3 (his3), translation elongation factor 1-alpha (tef1) and β-tubulin (tub2) loci. As a result, two new species named Diaporthe rizhaoensis and D. smilacicola are identified, described and illustrated in the present study.
New records of water mites (Acari, Hydrachnidia) from Portugal revealed by DNA barcoding, with the description of Atractides marizae sp. nov.
Authors: Pešić Vladimir , Jovanović Milica , Espiridião Oliveira Amália , Pedro Ana , Freira Marvin , Morais Maria Manuela
Published: March 2023

This study presents the first results of DNA barcoding of water mites from Portugal. DNA barcodes were recovered from 19 water mite specimens morphologically assigned to eight species, seven of them newly reported from Portugal. Two species, Torrenticola hispanica (Lundblad, 1941) and A. cultellatus (K. Viets, 1930) were discovered more than 80 years after they were first described, and Atractides marizaesp. nov. is described as new for science.
Vers un nouvel ordre mondial ?
Authors: Duclos Michel , Euvé François
Published: March 2023

La guerre en Ukraine a d’importantes conséquences géopolitiques. Le but de la Russie est d’ébranler l’ordre du monde promu par les Occidentaux. Pour l’instant, le système international tient mais on observe une divergence croissante entre les pays du Sud et l’Occident, sur laquelle jouent la Russie et la Chine. Les Européens doivent entreprendre de reconstituer l’ordre mondial sur de nouvelles bases, prenant davantage en compte les pays du Sud.
La polarisation de la Cour suprême des États-Unis
Authors: Burtin Olivier
Published: March 2023

La décision de la Cour suprême américaine de mettre fin au droit constitutionnel à l’interruption volontaire de grossesse marque une étape symbolique forte dans l’histoire de cette institution. Elle représente l’aboutissement d’une évolution de la jurisprudence caractéristique du tournant conservateur des années 1980. En conséquence de cette décision, la Cour a perdu en popularité et des voix s’élèvent pour la réformer.
La délibération en comité de bioéthique
Authors: Lagrée Jacqueline
Published: March 2023

La pratique de la délibération a profondément modifié la profession médicale en mettant l’accent sur la collaboration et l’accord du patient, ainsi que sur la dimension collégiale de certaines décisions. À quoi engage-t-elle et peut-on espérer son extension à d’autres domaines ?
The COURAGE Registry: A Digital Gateway to Non-Conformist and Dissident Culture in (Post-)Socialist Eastern Europe
Authors: Apor Péter , Horváth Sándor , Scheibner Tamás
Published: March 2023

Cet article revient sur la méthode et la conception de la base de données numérique COURAGE, élaborée dans le cadre du projet H2020 COURAGE : Cultural Opposition – Understanding the Cultural Heritage of Dissent in the Former Socialist Countries . La base présente des collections documentant les activités culturelles de groupes ou d’individus marginalisés, réduits au silence, interdits de territoire, persécutés ou empêchés de poursuivre leurs activités par les autorités socialistes d’Europe de l’Est dans la seconde moitié du XX e  siècle.
Principles for an Online Resource: Project for the Study of Dissidence and Samizdat
Authors: Komaromi Ann
Published: March 2023

À partir du projet mené par les Bibliothèques de l’Université de Toronto depuis 2011, cet article revient sur les principes d’organisation d’une ressource en ligne sur le samizdat et la dissidence, phénomènes de réseaux. Comment numériser et présenter des données peu nombreuses mais représentatives ? Comment garantir la souplesse nécessaire à un travail collaboratif ? Comment citer d’importants projets et collections, qu’ils soient institutionnels ou pas ? Et comment assurer la diffusion des résultats de valorisation dans des formats divers ?
Typologies des parcours du Samizdat/Tamizdat dans le portail Free Voices in USSR and their Echo in the West : nouvelles frontières de l’étude de la réception interculturelle
Authors: Pieralli Claudia
Published: March 2023

L’article analyse le projet et portail en ligne Free Voices in USSR: independent Literature, Arts and Thought (1953-1991) and their Echo in the West . Il s’agit d’en discuter les choix thématiques, terminologiques et méthodologiques, les critères de sélection des objets décrits, les outils, les motivations scientifiques et finalement, de présenter ses possibles prolongements en termes de catalogage, d’inventaire, de création de collections numériques dédiées à la recherche scientifique.
Le fonds Antoni Nowak-Przygodzki : une source remarquable sur l’histoire des réfugiés d’Europe centrale et orientale en France après 1945
Authors: Durin-Hornyik Veronika
Published: March 2023

Les archives sont fondamentales afin de reconstituer l’histoire. L’existence ou le manque de sources déterminent le champ d’études de l’historien tandis que l’étude de l’itinéraire des archives apporte une réflexion généalogique à sa recherche. Cet article tente d’exposer ce double enjeu à travers la découverte du fonds d’un exilé politique polonais installé en France après 1945, afin de reconstituer l’histoire d’une institution qui était restée jusque-là inédite.
Being Identified as a Double Threat to Communism and Nationalism: Dissidents from the Turkish Minority in Bulgaria During 1984-1990’s and the Archival Resources
Authors: Korkmaz Nuri
Published: March 2023

Les politiques menées dans la Bulgarie communiste pour créer une société sans classes ont entraîné une fragmentation profonde de la population bulgare. L’identité ethnique et religieuse de la minorité turque a été perçue comme une menace. Aussi, une campagne a été menée pour remplacer les noms turcs par des noms bulgares. Les politiques oppressives du parti communiste bulgare ont créé des sentiments hostiles dans la minorité turque avec le « processus de renaissance ». Les revendications démocratiques n’étaient pas bien accueillies par le gouvernement et certains dissidents furent emprisonné, d’autres envoyés en exil. Les manifestations massives contre le gouvernement communiste ont eu un impact catastrophique sur le régime communiste dans le pays, et ont mis fin au régime totalitaire.
Echoes of the Silent Church: Exile, Memory and Spiritual Resistance in the journal Catacombes (1971-1992)
Authors: Ramsay Iona
Published: March 2023

La revue bimensuelle Catacombes , publiée en français par les exilés roumains Sergiu et Nicole Grossu à Paris entre 1971 et 1992, offre un aperçu des préoccupations de certaines communautés d’exilés de l’Europe de l’Est en Europe occidentale, et de leur rôle dans le développement de formations politiques de la droite radicale en Occident. En s’intéressant à l’histoire et à la circulation de Catacombes , cet article interroge le rôle que certaines publications en exil ont joué dans la culture politique de la fin de la guerre froide, et sur la manière dont l’histoire de ces publications a été racontée. Il questionne la manière dont Catacombes a contribué à développer des solidarités entre les exilés d’Europe de l’Est et les communautés chrétiennes, en France mais aussi dans le reste de l’Europe occidentale et en Amérique latine. Il examine également comment l’implication de ces groupes dans Catacombes ont contribué à transformer la revue en un site de convergence entre différents courants de la politique chrétienne traditionnaliste et antilibérale, qui ont collectivement fait appel aux expériences des chrétiens des pays de l’Europe socialiste.
The Archive as Witness of Intertextual Lithuanian-Russian Dissidence links
Authors: Nikiforova Basia
Published: March 2023

L’article étudie les dissidents lituaniens et russes et les transferts culturels et intellectuels à l’est du Rideau de fer. Les échanges ont contribué à produire des archives de la dissidence artistique lituanienne. Les archives du poète dissident lituanien Tomas Venclova permettent de réinterpréter le concept de censure externe et interne. Tandis que les archives de Vladimir Tarasov, données en 2020 au Radvila Palace Museum of Art (Vilnius), donnent à voir le contexte de Diktat idéologique dans lequel les artistes ont dû travailler dans les années 1960 à 1980.
Les archives de l’exil et de la dissidence de l’Europe de l’Est socialiste en France : fonds identifiés dans le cadre du projet DISSINVENT
Authors: Labeÿ Marion
Published: March 2023

Ce portfolio est l’un des résultats du projet de recherche DISSINVENT qui se propose d’identifier, de rendre visibles nationalement et internationalement et de valoriser les collections produites par les dissidences « de l’Est » en exil en France entre 1945 et 1991.
Aux origines du Sommet franco-africain : un nouvel outil au service de la politique africaine de la France (1973-1981)
Authors: Durez Aymeric
Published: March 2023

En 1973, s’est tenu le premier sommet franco-africain. Présenté par les dirigeants français et africains comme une « réunion de famille », liée aux relations étroites entretenues par la France avec les anciens membres de la Communauté française, ce premier sommet visait surtout à répondre à un climat de crise dans un contexte de remise en cause du système de coopération mis en place au début des années 1960 par certains partenaires de la France. Après le décès de Georges Pompidou et l’élection de Valéry Giscard d’Estaing le 19 mai 1974, la tenue d’une nouvelle réunion en 1975 permet d’acter l’annualité de ces rencontres et le principe d’une alternance entre la France et un pays africain pour l’accueil de la conférence. L’objectif de cet article est d’étudier l’évolution du Sommet entre sa première formule en 1973 et sa huitième édition en 1981. Les réflexions de l’exécutif français sur la définition du sommet, sur son élargissement à de nouveaux membres et sur son degré d’institutionnalisation, permettent de saisir l’évolution des objectifs de la politique de la France en Afrique en lien avec le contexte international et national.
Factors affecting willingness and future intention to eat insects in students of an edible insect course
Authors: Shelomi M.
Published: March 2023

Interest in insects as food has increased globally over the last decade. Factors affecting willingness to eat insects in countries without traditions of edible insects have been studied predominantly in Europe, and with a predominant focus on consumer attributes such as levels of food neophobia or disgust. This study examined attitudes in Taiwan, where edible insects are not commonly consumed, and included attributes of edible insects as a food innovation, using Diffusion of Innovations Theory as the framework to model explanatory variables affecting consumer choice. These choices not only included willingness to eat insect products in varying levels of disguise, but also the desire, intention, and probability of actually eating insects within the next month, in order to identify factors affecting passive rejection from lack of supply instead of active rejection. Taiwanese students of an edible insect course were surveyed on their willingness and intention to eat insects, and their views towards novel foods, insects in general, and insects as food. Food neophobia and levels of disgust or fear of insects had the strongest effects on respondent willingness and intent to eat insects. Processed insect products were seen as more acceptable, yet also riskier and less acceptable to less innovative consumers. Concern over the environmental footprint of one’s diet correlated with a willingness to replace traditional meat with insects, but otherwise was not a significant predictor of likelihood to eat insects. Variables related to insect product supply such as trialability and observability were not significant, but perceived approval or disapproval from peers and family strongly correlated with willingness to eat insects. Strongly neophobic and entomophobic consumers may remain unwilling to add insects to their diets even if they are educated on the rationale for doing so.
Low-cost piezoelectric sensors and gamma ray attenuation fabricated from novel polymeric nanocomposites
Authors: Mahdi Shaimaa Mazhar , Habeeb Majeed Ali
Published: March 2023

This study looks at the synthesis of innovative PEO/PVA/SrTiO3/NiO nanocomposites for piezoelectric sensors and gamma shielding applications that are low weight, elastic, affordable and have good gamma ray attenuation coefficients. The impact of SrTiO3/NiO on the structural characteristics of the PEO/PVA mixture is investigated. The polymer mixture PEO/PVA received additions of SrTiO3/NiO at concentrations of (0, 1, 2, 3 and 4) weight percent by the casting method. On the top surface of the films PEO/PVA/SrTiO3/NiO NCs, scanning electron microscopy reveals several randomly distributed aggregates or fragments that are consistent and coherent. An optical microscope image collection reveals that the blend*s additive distribution of NPs was homogenous. Gamma ray shielding application results show that the attenuation coefficient of PVA/PEO/SrTiO3/NiO NCs is increased by increasing concentration of SrTiO3/NiO nanoparticles. Radiation protection is another application for it. The pressure sensor application findings of NCs show that, when the applied pressure rises, electrical capacitance (Cp) increase.
Comparison measures for Pythagorean $ m $-polar fuzzy sets and their applications to robotics and movie recommender system
Authors: Kumam Wiyada , Naeem Khalid , Riaz Muhammad , Khan Muhammad Jabir , Kumam Poom
Published: March 2023

The perception of comparison measures is vitally significant in more or less every scientific field. They have many practical implementations in areas such as medicine, molecular biology, management, meteorology, etc. In this article, novel similarity, distance, and correlation comparison measures for Pythagorean $ m $-polar fuzzy sets are proposed. The leading qualities of these comparison measures are investigated. The numerical examples are provided to demonstrate their formulation. In P$ m $FSs, elements are allowed to duplicate finitely, which supports the usage of the measures put forward in here-and-now situations where we ponder time and again to reach some decision. The three algorithms are proposed to discuss the applications of comparison measures for P$ m $FSs in robotics and movie recommender systems.
The Hermite-Hadamard type inequalities for quasi $ p $-convex functions
Authors: Sezer Sevda , Eken Zeynep
Published: March 2023

In this paper, the Hermite-Hadamard inequality and its generalization for quasi $ p $-convex functions are provided. Also several new inequalities are established for the functions whose first derivative in absolute value is quasi $ p $-convex, which states some bounds for sides of the Hermite-Hadamard inequalities. In the context of the applications of results, we presented some relations involving special means and some inequalities for special functions including digamma function and Fresnel integral for sinus. In addiditon, an upper bound for error in numerical integration of quasi p-convex functions via composite trapezoid rule is given.
Konflikti v prostorskem načrtovanju: kritični pregled teoretičnih pristopov k zmanjševanju konfliktnosti
Authors: Goluža Maruša
Published: March 2023

Članek obravnava, kako različne smeri teorije prostorskega načrtovanja obravnavajo konflikte in kakšne pristope za zmanjševanje konfliktnosti uporabljajo. Konflikte smo predstavili skozi tri koncepte: javni interes, družbena produkcija prostora in težko rešljivi problemi. Celostni racionalni pristop se izogiba konfliktom z zanašanjem na objektivnost strokovnega znanja, deliberativni pristop skuša reševati konflikte z deliberacijo med enakopravnimi akterji, poststrukturalistični pristop pa konflikte označuje kot osnovo za izražanje različnih strokovnih in vrednotnih argumentov. Kljub zavedanju, da je tudi stroka lahko vir konfliktov in pristranska, deliberacija v stroki v teoriji ni posebej izpostavljena. Za zmanjševanje konfliktnosti prostorskega načrtovanja so zato potrebni pristopi, ki temeljijo na znanosti in formaliziranih postopkih, kot tudi pristopi, ki temeljijo na deliberaciji med akterji. //

Conflicts in spatial planning: Critical evaluation of theoretical approaches to conflict management

The article examines how different strands of planning theory conceptualize and deal with spatial conflicts. Conflicts are first presented in terms of three concepts: public interest, social production of space, and wicked problems. The rational approach avoids conflicts by relying on unbiased scientific knowledge, the deliberative approach resolves conflicts through deliberation between equal actors, while the post-structuralist approach sees conflicts as necessary to reveal actors’ different interests and value judgments. Despite the awareness that scientific knowledge is not always impartial, deliberation in the scientific sphere continues to be overshadowed by approaches facilitating citizen involvement. Knowledge-based approaches and the formalization of planning processes are essential alongside deliberation to tame the conflictual nature of spatial planning.
Les ponts : motifs et symboles dans les traditions populaires byzantines, néo-grecques et balkaniques (en guise d’appendice à l’étude de M. le Professeur Gérard Gros « de l’imaginaire du pont à l’imagerie mariale »)
Authors: Pétalas Dimitri
Published: March 2023

Dans cette étude on examine la symbolique du pont – ainsi que des motifs liés à celle-ci – dans le folklore des Balkans (le domaine byzantin et néo-grec inclus) et même parfois en dehors de cette région (Asie Mineure, Europe Centrale et Orientale, France), qu’il s’agisse des chansons populaires, des légendes orales, etc. L’accent est surtout mis sur le pont : en tant que passage périlleux conduisant à l’Autre monde ou gardé par un être maléfique, surnaturel ou non, que le héros doit vaincre (Charon, un dragon, une sorcière, mais aussi le voïvode turc) ; en tant qu’édifice dans lequel on doit emmurer un être innocent (l’épouse du maître maçon, un frère et une sœur jumeaux…), afin qu’il ne soit pas détruit par les divinités du fleuve dont il vient brusquement maîtriser la force ; en tant que symbole marial dans la poésie savante de l’Église d’Orient.
Domination seigneuriale et réforme grégorienne. À propos d’un livre récent
Authors: Barthélemy Dominique
Published: March 2023

La récente Nouvelle Histoire du Moyen Âge, en ses chapitres centraux, offre le spectacle inquiétant d’une disparition du temps humain et social, des drames, des entreprises et des combats au profit de l’exposition de théories encore peu débattues. On relève ici avec regret un risque d’appauvrissement, tant dans l’histoire des seigneuries que dans celle de l’Église, et on rappelle qu’une « nouvelle histoire » se doit plutôt de compléter et retoucher avec une certaine modestie les histoires antérieures, en présentant des avancées récentes et en frayant la voie à des avancée futures.
Puiser l’eau et arroser les terres en plaine languedocienne. État des connaissances sur les puits à roue et les norias de Castelnau-le-Lez (Hérault)
Authors: Caliste Lisa , Desagher Julia , Rousset Valérie
Published: March 2023

Depuis septembre 2019, une opération ponctuelle a été menée sur les équipements hydrauliques du quartier Notre-Dame-de-Sablassou (Castelnau-le-Lez, Hérault) par le Service Inventaire et Connaissance des Patrimoines, associée à une étude d’archéologie du bâti de la noria du Clos de l’Armet. Ce quartier présente une concentration particulièrement élevée d’aménagements liés à l’élévation de l’eau, en particulier des puits équipés d’une roue actionnée grâce à l’énergie d’un animal de trait (puits à roue et norias). Massivement répandus dans la plaine littorale, de l’Aude à la Camargue, et dans les vallées languedociennes, ils répondent aux besoins domestiques et agricoles, dans des zones géographiques où l’eau disponible est avant tout présente dans des nappes aquifères plus ou moins profondes. L’étude menée à partir du corpus castelnauvien a permis d’éclaircir la question du vocabulaire employé pour désigner les engins élévatoires et, plus avant, d’en éclairer les caractéristiques techniques et les usages. La noria désigne d’abord, à partir du milieu du XIXe siècle, époque où elle apparaît dans nos sources, les mécanismes qui succèdent à ceux des puits à roue attestés depuis la fin du Moyen Âge et construits en nombre au cours des XVIIe et XVIIIe siècles dans les jardins potagers comme dans les jardins d’agrément à Montpellier et ses environs. L’évolution des termes employés est liée au changement des matériaux et de puissance de ces nouveaux mécanismes. Ces installations, qui ont connu un rebond lors de la crise du phylloxéra, ont perduré dans la plaine languedocienne dépourvue d’aménagements hydrauliques de grande envergure jusqu’au milieu du XXe siècle, époque de construction du canal de la Compagnie Nationale du Bas-Rhône-Languedoc (BRL).
Quand le Roussillon met de l’eau dans son vin : l’hydraulique agricole dans la lutte contre le phylloxéra
Authors: Sintès Quentin
Published: March 2023

La deuxième moitié du XIXe siècle est marquée par de profondes mutations des systèmes agro-écologiques des Pyrénées-Orientales. Dans cet espace méditerranéen où la maîtrise de l’irrigation est pourtant ancienne et séculaire, la sécheresse estivale et les crues récurrentes posent la question d’un aménagement rationnel des cours d’eau. Des projets de barrages-réservoirs sont alors formulés. Dans la conjoncture favorable du Second Empire, l’extension de la vigne dans les plaines, au détriment des cultures irriguées, vient finalement résoudre l’aporie du stress hydrique qui frappe le Roussillon. Mais l’arrivée brutale du phylloxéra dans les années 1870 vient bousculer cette trajectoire. Des propriétaires-viticulteurs découvrent qu’un des seuls remèdes efficaces contre ce puceron dévastateur consiste à submerger les vignes d’une épaisse couche d’eau pendant une trentaine de jours. Cette période illustre la genèse de la monoculture viticole dans les Pyrénées-Orientales et de certains ouvrages d’art, comme le barrage des Bouillouses, qui façonnent encore aujourd’hui les territoires de l’eau roussillonnais.
Preparation and Characterization of Hydroxyapatite/Zinc Composites with Alginate for Bone Scaffold Application
Authors: Ramadhani Jane , Tajalla Gusti Umindya Nur , Parmita Ade Wahyu Y.P. , Rachmantyo Riska , Wibowo Arie
Published: March 2023

Studies on hydroxyapatite are plentiful since the compounds are alike to the bone and sometimes combined with Zn to fabricate a longstanding structure and improve cell regeneration. However, construct a 3D model of HAp-Zn through sintering required high energy. Therefore, this study performed a low-temperature process using alginate, taking a role as a matrix, to achieve an interconnected porous structure while maintaining mechanical properties. The variations of alginate concentrations (0%, 2%, 4%, and 6%) were mixed with HAp-Zn powder using PBS and CaCl2. The bone scaffold was then characterized using XRD, FTIR, SEM, and compressive test. The XRD result showed that alginate addition did not change the HAp-Zn structure and phase. The degree of crystallinity and crystallite size was found to decrease with the increasing composition of alginate. The FTIR spectra also displayed an intermolecular interaction between HAp-Zn and SA. On the other hand, the SEM observation contained well interconnectivity with 50-200 μm of pore size. It led to an incline in ultimate compressive strength and modulus of elasticity with the uppermost value was 2.05 ± 0.06 MPa and 0.037 ± 0.001 GPa respectively in 6% of alginate.
The Effect of Temperature Controller on the Gasification Performance Using Downdraft Gasifier with Three-Stages Gasifying Agent
Authors: Mujiarto Sigit , Sudarmanta Bambang , Fansuri Hamzah
Published: March 2023

Gasification is a technology that can convert biomass into alternative energy. Temperature control in this study is used to control the temperature in the oxidation zone of the gasification process. The weakness in the gasification process is the instability of the syngas produced as a result of the changes in temperature and raw materials in the reactor. Thus, one way to stabilize the syngas produced in the gasification reactor is to control the temperature by controlling the rotational speed of the blower. In this study, the gasification reactor used was a downdraft gasifier type with a 3-level air input made from palm hemp pellets. The results of the study that the performance indicators for gasification without temperature control obtained syngas composition results CO = 21.12 % v, H2 = 12.39 % v, and CH4 = 1.33 % v. The calorific value (LHV) of syngas is 4524.97 kJ/kg, the efficiency of cold gas is 58.34%, and the tar content is 77.33 mg/Nm3. While gasification with temperature control results obtained syngas composition CO = 26.12% v, H2 = 9.3% v, and CH4 = 1.32% v. The calorific value (LHV) is 4746.82 kJ/kg, the efficiency of cold gas is 61.23%, and the tar content is 60.95 mg/Nm3. The results obtained using temperature control showed an increase in LHV of about 4.9%, an increase in gas efficiency of 2.89% cold, and a decrease in tar content of 16.4 mg/Nm3. The results of this study can be used to further optimize the syngas gasification process.
SAND as Granular Damper Material to Increase Stability Limits during Turning of Steel Pipe
Authors: Suhardjono  , Wahjudi Arif , Sampurno
Published: March 2023

The occurrence of chatter during machining processes is a serious problem because of an excessive vibration that consequently dropped the quality of the machined surface. Especially on the turning process of tube shaped workpieces e.g. steel pipe that has relatively low stability limit represented by low critical depth of cut due to the naturally low dynamic stiffness of steel pipe. A cheap and simple method to increase the stability limits during the turning process of steel pipe has been developed in this research by using “Sand” as granular damper material to dissipate the elevated vibration energy. An experimental research is performed to investigate the performance of the sand damper by doing the cutting process of two different diameter the steel pipe that is filled up by sand. The result of the experiment shows that the 3 inch nominal diameter with fully filled of Sand can increase the stability limits from the critical depth of cut 0.68 mm (empty or without sand) up to 3.27 mm (full) or elevate by 4.8 times (almost fivefold). On the other hand, the 2.5 inch nominal diameter by filling with full of sand can improve stability limits from the critical depth of cut 0.95 mm (without sand) up to 3.05 mm or increase by 3.2 times. In simple words, the result of this research can be concluded that the increasing of the stability limits means also the elevated of the quantitative performance or the production rate of the turning process of Steel pipe almost up to fivefold. Keywords: Stability limits, chatter, sand damper, turning, steel pipe, vibration.
Research on 3-D Precise Mapping System for Deformation Defects of Submarine Pipeline
Authors: Zhou Peng , Peng Xiaoqing , Zhu Hai , Ren Xueyu , Lin Peiweng , Wang Kaichuang , Li Haonan , Zhou Zhonghui , Chen Jiawang , Li Jun , Chen Xuehua , Cao Guomin , Gao Xu
Published: March 2023

Abstract The submarine oil pipeline has many advantages, such as large oil transportation capacity, and being fast and economical. However, long-term laid submarine oil pipelines are affected by reciprocating load of water flow, subsidence caused by soil liquefaction, ship
anchorage operation, etc. In severe cases, it causes overall distortion of a small section of the submarine pipeline, profoundly affecting the safety of the submarine pipeline, which is a significant safety hazard for the health of the marine environment and potentially impacting social and
economic benefits. Taking the Cezi-Zhenhai submarine pipeline in the sea area between Ningbo and Zhoushan as an example, many deformation defects in the pipeline have been found through internal inspection, and there is a trend of further deterioration. However, the existing external detection
of submarine pipeline deformation can only collect limited data through mechanical dots for rough inversion. This does not meet the accuracy requirements of repairing existing submarine pipeline clamps. Therefore, we propose a real-time visualization surveying and mapping system for the submarine
pipeline based on a 3-D laser and a separately designed electronic control system. Our research team performed actual mapping work for the Cezi-Zhenhai submarine pipeline and achieved an excellent mapping control effect. A steady monitoring image and good control effect of moving parts are
obtained, and the data obtained by 3-D laser processing perfectly represent the actual state of the submarine pipeline. Predictably, the large-scale application of this system will provide a solid technical guarantee for the health of submarine pipelines.
Research on the Isobaric Transfer Method and Device for Sediment of Full-Ocean Depth
Authors: Zhou Qixiao , Wang Hao , Zhang Peihao , Gao Qiaoling , Li Haonan , Chen Jiawang
Published: March 2023

Abstract In this study, a sediment isobaric transfer device based on the principle of volume displacement was built, and the work process of the device was explained. A physical model was built in hydraulic analysis software AMESim to simulate the actual working conditions.
The influences of pre-charge pressure and volume of accumulator, diameter, and length of the hydraulic pipeline and opening pressure of safety valve on the pressure fluctuation and pressure steady-time during transfer process were studied. The transfer system was optimally designed based on
the results of parametric analysis. The sea trial verified that the system could transfer sediment with a pressure exceeding 90 MPa into a culture vessel with low-pressure fluctuating pressure.
Achieving the cure of follicular lymphoma: is it time to finalize treatment strategies to reach this goal in a subset of patients?
Authors: Passucci Mauro , Assanto Giovanni , Pulsoni Alessandro
Published: March 2023

NO ABSTRACT AVAILABLE
Domestic tourism as a recovery strategy in the face of COVID-19: Insights from South Africa
Authors: Nyikana Siyabulela , Bama Hilary K.N
Published: March 2023

Orientation: This article drew from an interpretivist research orientation.Research purpose: This study aimed at contextualising domestic tourism as a strategic tool with which the tourism sector can recover from coronavirus disease 2019 (COVID-19) in South Africa.Motivation for the study: The impact of COVID-19 on the economy, and tourism in particular, has been devastating in South Africa. Given the historical overreliance on international tourism receipts, the importance of domestic tourism was highlighted during the reduced lockdown levels. This study was therefore motivated by the potential of this market to offset some of the losses to international tourism in times of uncertainty.Research design, approach and method: This study involved a qualitative research design where in-depth, semistructured interviews were conducted with purposefully selected key resource stakeholders (n = 20) in domestic tourism. These interviews were recorded, transcribed verbatim and thematically analysed.Main findings: The study found that the stakeholders were satisfied with how the government initially dealt with the pandemic, although they were very critical of the lack of communication. Additionally, they noted that domestic tourism is an important springboard for recovery in the country but only if effective collaboration between the private and public sectors is enhanced.Practical/managerial implications: Recommendations are made for more communication amongst stakeholders, which in turn will result in better collaborations and ultimately achieving effective use of domestic tourism as a cornerstone for further development and recovery.Contribution/value-add: This study makes a modest contribution to tourism research, especially in the face of external shocks such as that of the COVID-19 pandemic.
Factors influencing strategic decision-making in South African small businesses
Authors: Van Wyk Ireze , Venter Peet
Published: March 2023

Orientation: Good strategic decision-making (SDM) is vital for continuous long-term business performance and sustainability.Research purpose: This study aimed to determine the influencing factors of SDM in small-, medium- and micro-enterprises (SMMEs) and how they relate to each other.Motivation for the study: Strategic decision-making literature for SMMEs is underrepresented, particularly in South Africa. This article addressed this gap by investigating these factors, thereby improving the current understanding of SDM and enhancing environmental scanning and effective SDM in SMMEs.Research design, approach, and method: A qualitative approach was adopted, implementing the interactive qualitative analysis (IQA) research technique involving a focus group session and interviews. Themes where identified through inductive and deductive coding. A total of 13 SMME owners participated in the study.Main findings: The main findings identified five categories of influencing factors, namely Risk, SMEracter, Operations, Limitations and/or Opportunities and/or Rewards. The sub-themes highlighted unique influencing factors such as ‘fuzzy feel good’, financial potential, time, capacity, core of the entity and ‘engine’. The findings also highlight how the five categories of influencing factors relate to each other in the SDM context.Practical/managerial implications: The findings provide SMME managers and/or owners with insight into that which influences their SDM, and how these factors relate to each other. Such knowledge improves SDM, environmental scanning, and assists in identifying how to mitigate influencing factors during SDM.Contribution/value-add: This article makes a theoretical contribution by providing additional insights pertaining to the influencing factors of SDM in SMME, and how they relate to each other, adding to the body of knowledge related to SDM in SMME.
Emerging market entrepreneurs’ narratives on managing business ethical misconduct
Authors: Lingwati Emeldah , Mamabolo Anastacia
Published: March 2023

Orientation: South Africa’s entrepreneurial landscape faces multiple challenges that minimise the growth of established firms. Ethical misconduct is one of the main challenges entrepreneurs encounter in their business activities.Research purpose: To gain deeper insight into the entrepreneurs’ narratives of the types and management of ethical misconduct when engaging in entrepreneurial activities.Motivation for the study: Entrepreneurs are central to economic development and alleviating challenges, such as poverty, employment creation and economic inclusion. Therefore, managing challenges that hinder their growth will contribute to the country’s economic development.Research design, approach and method: This study used narrative qualitative research to gather data on business ethical misconduct types and their management strategies. A sample of 17 established entrepreneurs participated in one-hour semi-structured interviews. Focusing on established entrepreneurs with more than three years in business provided real experiences of ethical misconduct and their management. Thematic narrative analysis was used to analyse the participants’ experiences and develop key themes from the data.This study used narrative qualitative research to gather data on business ethical misconduct types and their management strategies. A sample of 17 established entrepreneurs participated in one-hour semi-structured interviews. Focusing on established entrepreneurs with more than three years in business provided real experiences of ethical misconduct and their management. Thematic narrative analysis was used to analyse the participants’ experiences and develop key themes from the data.Practical/managerial implications: This study provides an ethical misconduct management framework that entrepreneurs could use in business practice and teaching.Contribution/value-add: This study contributes to entrepreneurial ethics literature and South African entrepreneurship knowledge development.
Antimicrobial susceptibility of bacterial uropathogens in a South African regional hospital
Authors: Naidoo Alicia , Kajee Afsana , Mvelase Nomonde R. , Swe Swe-Han Khine
Published: March 2023

Background: Urinary tract infections are common bacterial infections affecting millions worldwide. Although treatment options for urinary tract infections are well established, with ciprofloxacin long considered one of the antibiotics of choice, increasing antibiotic resistance may delay the initiation of appropriate therapy. While this increase in antimicrobial resistance has been demonstrated in multiple studies around the world, there is a dearth of information from developing countries.Objective: This study aimed to describe the antimicrobial susceptibility patterns of commonly isolated bacterial uropathogens in a South African hospital.Methods: Antimicrobial susceptibility data of isolates obtained from urine specimens at the RK Khan Hospital, a regional hospital in KwaZulu-Natal, South Africa, between January 2018 and December 2020 were retrieved from the hospital’s laboratory information system and analysed to determine the differences in resistance rates between the most frequently isolated bacterial uropathogens.Results: Of the 3048 bacterial urinary pathogens isolated between 2018 and 2020, Escherichia coli (1603; 53%) was the most common, followed by Klebsiella spp. (437; 14%). Both E. coli and Klebsiella spp. showed high rates of resistance to amoxicillin/clavulanic acid (29.8% and 42.3%) and ciprofloxacin (37.7% and 30.4%). Nitrofurantoin resistance was low among E. coli (6.2%) but high among Klebsiella spp. (61.3%).Conclusion: E. coli and Klebsiella spp. in this study were highly resistant to amoxicillin/clavulanic acid and ciprofloxacin, two of the frequently prescribed oral treatment options.What this study adds: This study highlights the importance of regular local antimicrobial resistance surveillance to inform appropriate empiric therapy.