bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimisation of Operational Parameters of a Spiral Classifier Using Design of Experiment (DOE)
Authors: Ackah K. , Owusu C. , Amoah F. 
Published: July 2020

Abstract
Classifying Mn Ore to improve upon the grade and the properties has become a crucial activity for the Mn industry since it increases the market value of the ore. Ghana Manganese Company (GMC) has renovated their oxide washing plant by integrating it with a spiral classifier to make a batch system operating process. Particle size of <3.35mm (Mn grade of 43-47%) obtained from the primary section of the plant served as feed to the classifier and with the plant condition (i.e. at 60 min washing time, 30 rev/min speed of spirals and feed tonnage of 6 t), Mn grade of 49% was achieved. This paper focused on the optimisation of some selected operational parameters of the classifier to obtain a Mn grade >50% using Design of Experiment (DOE). Series of test works were designed using the DOE for the classifier using the constraints of washing time (30-90 min), speed of spirals (20-40 rev/min) and feed tonnage (6-9 t). The outcome of the test work after simulation showed that all the selected parameters had a great influence on Mn grade. The spiral speed and feed tonnage correlated negatively to the Mn grade with washing time correlating positively. Operating the spiral classifier at a feed rate, spiral speed and washing time of 6 t, 25 rev/min, and 30 min, respectively, yielded Mn grade of 53%. A Confirmatory test using the established conditions gave a Mn grade of 53%, which is a 4% increment in the previous Mn grade which was 47%. The outcome of the studies is the new established operational conditions which is adhered to by the plant, producing a manganese concentrate grade ranging between 52-54%.

Keywords: Design of Experiment (DOE), Spiral Classifier, Grade, Manganese
Land cover and land use change analysis: Its impacts on rangeland ecosystems in Kakooge County, Nakasongola district, Uganda
Authors: Mbaziira James 
Published: July 2020

The paper presents and reviews the land cover and land use changes within a rangeland ecosystem and their impacts for a period of 18 years (1987–2005) in Nakasongola district, specifically, Kakooge County. The study used ArcGIS 10.2 data, field observations and community perceptions. Results showed a typical change in built areas, bush lands and subsistence farmlands expanded by 822.2% in 1987 and 61.7% in 2015, while commercial farmland, forest plantations, wetlands and woodland declined by 1.5%, 67.5%, 37.6% and 6.5% respectively. The changes in land cover and land uses originated from poverty, charcoal production, occurrence of drought, and introduction of pine plantations by 41%, 37%, 55% and 50%. Similarly, this resulted into frequent droughts, reduced soil productivity, food insecurity, and wood fuel crisis by 98%, 67%, 33%, and 36%, respectively. There was also general decline of land holding per household from 1.6ha to 1.5ha. Thus, such cumulative effectscontribute to rangeland degradation calling for appropriate management measures like strengthening environmental monitoring and ecosystem conservation strategies, extending poverty alleviation programmes and integrating of tree planting into the farming system in a more collaborative way to halt the outpacing impacts.
Integrating Remote Sensing and GIS to Model Forest Fire Rik in Virunga Massif, Central - Eastern Africa
Authors: Kayijamahe C.B , Rwanyiziri G , Mugabowindekwe M , Tuyishimire J 
Published: July 2020

This study aimed at developing a forest fire risk model using a combination of GIS and Remote sensing techniques, which helped to identify the level of forest fire vulnerability in Virunga Massif, located at the edge of central and eastern Africa. The Analytic Hierarchical Process (AHP) approach was employed to rank and weigh the key variables and combine them into different fire risk input factors which were later integrated into the main forest fire risk model. The main input datasets, which were linked with a potential source of a forest fire, include the land cover (specifically vegetation type data generated through the Landsat 8 image classification); topographic variables such as slope, elevation and aspect retrieved from the existing Digital Elevation Model (DEM) of Rwanda; the concentration of illegal activities and proximity to beehives sites; as well as visibility from the road and human settlements. Input factor maps were generated, assigned weights and combined in a GIS environment to produce a Virunga massif fire risk model map, which was validated using the existing burnt areas map, and ground truth points recorded using GPS. The study found that the ignition factors are the most forest fire triggering factors in Virunga massif, followed by topographic factors which play a major role in the fire spreading across the ecosystem. The high forest fire risk areas were found in steep slope location around the peaks of the volcanoes, whereas areas with the lowest risk of forest fire were found inside the forest at gentle slopes. The model was validated at 75% accuracy using ground truth data. The study proposes measure to halt the ignition factors through prevention of illegal activities in the Virunga massif for the successful prevention of the forest fire risk in the ecosystem, with much effort invested during the dry season, along with the relocation of beehives to a farther distance from the ecosystem’s edge.
Keywords: Forest Fire Risk Modelling, Biodiversity, Illegal Activities, Ignition Factors, Topographic Factors, Analytic Hierarchy Process
Innovative Geospatial Solutions for Land Tenure Mapping
Authors: Koeva M. , Stöcker C , Crommelinck S , Chipofya M , Kundert K , Schwering A , Sahib J , Zein T , Timm C , Humayun M.I , Crompvoets J , Tan E , Casiano C , Nkerabigwi P 
Published: July 2020

There are millions of unrecorded land rights in sub-Saharan Africa, which are still not mapped. Therefore, there is a clear demand for innovative solutions for land tenure recording, as also written in the target 1.4 of UN Sustainable Development Goals (SDGs). In response to this need, the consortia of “its4land” European Commission Horizon 2020 project developed the “its4land toolbox” based on the continuum of land rights and fit-for-purpose approach. The advanced technological solutions of the toolbox include smart sketch maps, Unmanned Aerial Vehicles (UAVs), interactive boundary delineator, as well as sharing and publishing land information via geocloud services. The solutions are based on specific needs, market opportunities, and readiness of end-users. Moreover, aiming in scaling up broader governance implications are examined. During the project lifetime, the main technical tasks included tool development, prototyping, and demonstration of the tools to local, regional, national, and international users and stakeholders. Furthermore, equal emphasis was placed on needs assessment, governance, capacity, and business modeling. The current paper presents the unique its4land land administration toolbox in which the key exploitable results of the project are integrated in a joint used case in Rwanda.
Keywords: Fit-for-Purpose; Land Tenure; UAV; Boundary Delineation; Land
A Mobile Phone-based Multimedia Application Could Improve Maternal Health in Rural Southwestern Uganda: Mixed Methods Study
Authors: Musiimenta Angella , Tumuhimbise Wilson , Mugyenyi Godfrey , Katusiime Jane , Atukunda Esther , Pinkwart Niels 
Published: July 2020

Background: Reducing maternal and infant mortality rates remains challenging. Illiteracy, lack of reliable information, long distances to health centers continue to limit access to quality maternal healthcare in Uganda. Mobile health technologies could be promising affordable strategies for enhancing access to maternal health services. However, there is lack of studies assessing the experiences of illiterate rural pregnant women regarding these technologies.
Objective: To explore how illiterate pregnant women perceive a maternal health mobile application composed of tailored video and audio messages, appointment reminders and calling function.
Methods: We purposively sampled illiterate pregnant women initiating antenatal care at Mbarara Regional Referral Hospital. We carried out three focus group discussions with 14 women to elicit information on perceptions of the proposed mobile phone based multimedia application. We used STATA 13 to describe study participants and their preferences.
Results: Pregnant women anticipated that intervention would enhance maternal health by reminding them to attend antenatal appointments, enabling transport cost and time saving, providing tailored information that is easy to understand, and recall. However, financial constraints and phone sharing would limit the functionality.Conclusion: Mhealth application may provide acceptable and affordable alternative approaches to providing maternal health services, especially in settings where face-to-face approaches are challenging.
Polish Experiences in Handling Water Hazards during Mine Shaft Sinking
Authors: Czaja Piotr , Kamiński Paweł , Dyczko Artur 
Published: July 2020

The geological structure of most Polish mining regions is rich in groundwater, making shaft sinking difficult. In recent years, more than a dozen shafts, some almost 700 m deep, have been sunk in Poland using various methods of water hazard elimination. The vast majority of shafts that pass through aquifer formations have been sunk using artificial rock freezing, waterproof tubing, and concrete lining. Generally, this system has proven to be very effective. However, there have been cases of complications during sinking, including occasional flooding. This paper presents two cases of highly problematic flooding in shaft sunk using the freezing method, both leading to considerable construction delays and a significant increase in shaft sinking costs. The first case involved water inflow into the bottom section of the R-XI shaft at KGHM with rocks near the melting point of ice. In the other case, problems occurred passing through an Albian layer in the S. 1.3 shaft sunk for the Lubelski Węgiel Bogdanka S.A. mining corporation, where the freezing process was carried out while it was necessary to heat the rocks in the upper part of the shaft to protect the final lining from damage.
La necesaria simbiosis entre el Trabajo Social y el desarrollo regional: formación y perfil profesional para la intervención social en el territorio
Authors: Enríquez Pérez Isaac 
Published: July 2020

A través del presente artículo, reivindicando la relevancia del ejercicio de la interdisciplinariedad, se expone una estrategia teórico/metodológica para incursionar en lo que consideramos como una relación o incidencia recíproca entre la disciplina del Trabajo Social y la teoría y política del desarrollo regional. A su vez, se reconoce que entre ambas pueden suscitarse complementariedades y vinculaciones bidireccionales, pues el Trabajador Social requiere –en su formación y ejercicio profesional– de los estudios sobre el desarrollo y demás conocimientos y herramientas que contribuyan a inscribir y contextualizar la cuestión social y sus problemáticas en el territorio, en tanto construcción sociohistórica dotada de una dinámica desequilibrada y desigual que amerita de la promoción, participación e intervención social ejercidas por este profesionista. Son precisamente estas acciones, destrezas y habilidades las que le ayudarán a contribuir –tras aprovechar su sólida formación teórico/metodológica e instrumental– en el diseño y adopción de proyectos de desarrollo local/regional que precisan de una sensibilización respecto a los problemas sociales, así como de un diálogo con otros profesionistas y especialistas.Through this article, claiming the relevance of the exercise of interdisciplinarity, a theoretical/ methodological strategy is exposed to venture into what we consider as a relationship or reciprocal incidence between the discipline of Social Work and the theory and politics of regional development. At the same time, it is recognized that there can be two-way complementarities and links between the two, since the Social Worker requires –in their training and professional practice– development studies and other knowledge and tools that help to inscribe and contextualize the social issue and its problems in the territory, as a sociohistorical construction endowed with an unbalanced and uneven dynamics that merits the promotion, participation and social intervention exercised by this professional. It is precisely these actions, skills and abilities that will help you to contribute - after taking advantage of your solid theoretical / methodological and instrumental training - in the design and adoption of local / regional development projects that require awareness of social problems, as well as from a dialogue with other professionals and specialists.
El conjunto termal de la llamada Villa del Camino Viejo de las Sepulturas (Balazote, Albacete)
Authors: García Entero Virginia 
Published: July 2020

Entre las construcciones más emblemáticas y fáciles de identificar en los asentamientos romanos rurales, genéricamente conocidos bajo el apelativo de villa, se encuentran las dependencias termales, índice no sólo del grado de comodidad que alcanzaron estos establecimientos, sino también, en función de las dimensiones, esquema de uso y programa decorativo empleado, de la riqueza de sus propietarios. El conjunto termal de la villa albacetense del Camino Viejo de Las Sepulturas (Balazote), hasta ahora conocido tan sólo muy parcialmente, formó parte, por las razones expuestas, de un grupo de edificios balnearios rústicos asociados a grandes latifundios bajo imperiales y verdaderos conjuntos palatinos. Las fotografías inéditas de su excavación y el estudio exhaustivo del sistema constructivo nos ha permitido interpretar esta importante instalación termal y establecer una hipótesis de reconstrucción de su esquema de funcionamiento.Among the more emblematic and easy to identify constructions in Román rural sites, generically known as villa, are the thermal rooms. These rooms indícate not only the level of comfort reached by the Román villae but also, according to the dimensions, function plan and decorative programe, the owner's wealth. The thermal building of the villa of Camino Viejo de las Sepulturas (Balazote, Albacete) up to date known only quite partíally, was, considering the above mentioned characteristics, a part of a group of rustic bath suites associated with large states dating from the Late Román Empire and with real palatine complexes. The unpublished photographs of its excavation and the comprenhensive study of the system allowed us to these rievant thermal as well as to establish a hypothesis of its function plan.
Nestabilna brazgotina kot kronična rana in možnost nastanka Marjolinovega ulkusa
Authors: Emeršič Luka , Stritar Albin 
Published: July 2020

Marjolinov ulkus (MU) je redka, vendar izjemno agresivna oblika ulcerativnega ploščatoceličnega karcinoma, ki nastane iz kronične rane, najpogosteje po opeklinski poškodbi. Naš cilj je opozoriti na nevarnost maligne preobrazbe nestabilne brazgotine kot kronične rane (nastanek Marjolinovega ulkusa) ter možnosti njenega zdravljenja pri nas ter drugod po svetu. V Univerzitetnem kliničnem centru Ljubljana na Kliničnem oddelku za plastično, rekonstrukcijsko, estetsko kirurgijo in opekline smo v obdobju zadnjih 13 let obravnavali 5 bolnikov, operiranih zaradi nestabilne brazgotine, ki se je izkazovala kot kronična rana. Za potrebe članka smo opravili pregled angleške literature na temo ulceracije nestabilne opeklinske brazgotine.
Marjolinov ulkus je epiteliomska sprememba, ki jo je možno preprečiti. Vsaka večja rana, ki se prepusti sekundarnemu celjenju, ima potencial za razvoj v kronično rano, ki lahko ulcerira in vodi v maligno spremembo. Še posebej moramo biti pozorni pri opeklinskih ranah ter brazgotinah. Če se pojavi kronična rana, je potrebna biopsija in kasnejše zdravljenje. Uspešnost zdravljenja je bila največja, kadar se je rana obravnavala, še preden se je preobrazila.
Zastrupitev z ricinom: prikaz primera
Authors: Razinger Gašper , Brvar Miran 
Published: July 2020

Kloščevec (Ricinus communis) v Sloveniji poznamo predvsem kot okrasno rastlino, medtem ko v toplejših delih sveta raste prosto v naravi kot plevel. Rastlina je v celoti strupena, saj vsebuje močan strup ricin, katerega največja koncentracija se nahaja v semenih. Kloščevec je gospodarsko pomemben za proizvodnjo ricinusovega olja.
V prispevku je opisan bolnik, ki se je zastrupil z zaužitjem semen kloščevca. Zastrupitev z ricinom je potekala z omotico, glavobolom, bolečino v prsnem košu, dušenjem, slabostjo, bruhanjem in odvajanjem tekočega blata.
Ricin je toksični protein in je eden najmočnejših znanih rastlinskih strupov. Mehanizem njegovega delovanja je zavora sinteze proteinov v celici. Z ricinom se lahko zastrupimo z zaužitjem, vdihom, preko kože in vnosom v podkožje ali v mišice. Način vnosa pogojuje smrtni odmerek in klinično sliko. Zdravljenje zastrupitve z ricinom je simptomatsko. Skrbi nas uporaba ricina v teroristične namene, predvsem v obliki aerosola. V razvoju sta aktivna in pasivna imunizacija.
“Le debemos un gallo a Asclepio”. El canto político del cisne socrático
Authors: Bieda Esteban 
Published: July 2020

Mucho se ha escrito acerca del significado de las últimas palabras de Sócrates en el Fedón(118a7-8): “Critón, debemos un gallo a Asclepio. Pues bien, ¡páguenselo! Y no se descuiden…”. En el presente trabajo nos proponemos retomar el enigma de la deuda con Asclepio a fin de rescatar cierto matiz político presente en él. Para ello, tras reseñar brevemente las principales interpretaciones que se han dado en el último siglo, nos detendremos en la concepción socrática del nacimiento y de la vida en tanto fenómenos eminentemente políticos para, a partir de allí, repensar el statusde su muerte en esa misma clave.
Revisión sistemática de intervenciones en prosocialidad y empatía en personas con TEA
Authors: Bru Luna Lluna María , Martí-Vilar Manuel , González Sala Francisco 
Published: July 2020

El DSM-5 enmarca el trastorno del espectro autista (TEA) dentro de los trastornos del desarrollo neurológico, cuyo rasgo más característico son las alteraciones de la conducta social, que incluyen afectaciones en prosocialidad y empatía. El objetivo del presente trabajo es determinar la efectividad de las diferentes intervenciones dirigidas a mejorar la prosocialidad y la empatía en personas con TEA e identificar factores determinantes. Para ello, se ha llevado a cabo una revisión sistemática según las directrices PRISMA de los artículos encontrados en las bases de datos Web of Science, PubMed, ScienceDirect y Dialnet. Los resultados indican un incremento en las puntuaciones en prosocialidad y empática para las personas con TEA mediante diferentes técnicas de intervención, aunque parece ser que los factores determinantes son el grado de lenguaje receptivo y expresivo, las habilidades de comunicación no verbal, el razonamiento fluido, el CI y la frecuencia en la implementación.
The DSM-5 frames the autism spectrum disorder (ASD) within the neurodevelopmental disorders, whose most characteristic features are the alterations of social behavior. These include affectations in prosociality and empathy. The objective of this study is to determine the effectiveness of the different interventions aimed at improving prosociality and empathy in people with ASD and identifying determining factors for it. To this end, a systematic review of the articles found in the Web of Science, PubMed, ScienceDirect and Dialnet databases has been carried out following the PRISMA guidelines. The results indicate that an increase in prosociality and empathy scores for people with ASD is possible through different intervention techniques, and it seems that the determining factors are the degree of receptive and expressive language, nonverbal communication skills, fluid reasoning, IQ and the frequency of implementation.
Méthodologies en Administration publique : analyse comparative de la recherche au
Canada et en Australie
Authors: Charbonneau1 Étienne , Zekri Catherine , Castellanos Mariana , Kimvi Serguei  M. , Saël Emmanuel , Pli D. Abel , Ainsley Luc , Adandé2 H. Victor 
Published: July 2020

Plusieurs études relèvent une diversification des méthodes en Administration
publique contemporaine. Cette étude fait un état des lieux systématique et comparé,
sur une décennie, des méthodes de recherche publiées dans deux revues nationales en
administration publique. Les recherches publiées en Administration publique au
Canada, ainsi qu’en Australie, semblent en décalage sur la communauté mondiale en
Administration publique au plan méthodologique. Notre revue systématique révèle
toutefois peu de différences entre les deux revues : les entrevues et analyses
qualitatives de contenu sont courantes dans les deux échantillons, mais les
techniques quantitatives utilisées demeurent élémentaires. Il s’agit d’une
particularité qui n’est pas partagée avec la recherche en science politique
canadienne.
Reform of the International Monetary System
Authors: Taylor John B. 
Published: July 2020

An argument that a rules-based reform of the international monetary system, achieved by applying basic economic theory, would improve economic performance.
In this book, the economist John Taylor argues that the apparent correlation of monetary policy decisions among different countries—largely the result of countries' concerns about the exchange rate—causes monetary policy to deviate from effective policies that stabilize inflation and the economy. He argues that a rules-based reform of the international monetary system, achieved by applying basic economic theory, would improve economic performance.
Taylor shows that monetary polices in recent years have been deployed either defensively, as central banks counteract forces from abroad that affect the exchange rate, or offensively, as central banks attempt to move the exchange rate to gain a competitive advantage. Focusing on the years from 2005 to 2017, he develops an empirical framework to examine two monetary policy instruments: the policy interest rate (the more conventional of the two) and the size of the balance sheet. He finds that an international contagion in central bank decisions about the policy interest rate has accentuated the deviation from standard interest rate rules that have worked in the past. He finds a similar contagion in decisions about the size of the balance sheet. By considering a counterfactual policy in the estimated model, Taylor is able to estimate by how much the policy of recent years has increased exchange rate volatility. After several rounds of monetary actions and reactions aimed at exchange rates, Taylor finds, the international monetary system is left with roughly the same interest rate configuration, but much larger balance sheets to unwind.