bluuebunny/crossref_metadata_2025 huggingface dataset:
Application of modified concrete to remove surfactants from water
Authors: Kuźmiński Kamil , Morawski Antoni W. , Janus Magdalena
Published: October 2018

In these studies two types of modified concretes in photocatalytic mineralization of anionic surfactant sodium dodecylbenzenesulfonate (NaDBS) were used. Commercial TiO2-P25 and nitrogen modified TiO2-N as photocatalysts for concrete modification were employed. The studies were conducted in the special designed reactor which was a simple model of the secondary settler used at the sewage treatment plant. The mineralization of anionic surfactant NaDBS after 18 h of UV light irradiation amounted to 48% for concrete modified by TiO2-P25 and 37% for concrete modified by TiO2-N.
Photocatalytic decomposition of surfactants on nitrogen modified TiO2
Authors: Kuźmiński Kamil , Morawski Antoni W. , Janus Magdalena
Published: October 2018

In these studies advanced oxidation processes such as: photolysis, ozonation and photocatalysis for anionic and cationic surfactants decomposition were used. Nitrogen modified titanium dioxide and commercial TiO2-P25 were used for photocatalytic tests. UV-C lamp and different dose of ozone: 186, 383, 478 and 563 mg/(dm3·h) were used. The optimal system for anionic and cationic surfactants decomposition was connection of ozonation with UV-C irradiation.
One or more water demand patterns? - Calibration of the selected water network model
Authors: Kowalska Beata , Kowalski Dariusz , Suchorab Paweł , Iwanek Małgorzata
Published: October 2018

Calibration is one of the key steps in creating a numerical model of water supply networks. Calibration is performed on the basis of the results of the field measurement campaign and it should result in a consistent match of the simulation results with the results of the measurements. In the article the process and the results of the calibration of the selected water network model with the use a single (generalized) water demand pattern and using 11 patterns prepared for selected, characteristic consumers have been presented. Calibration was performed using the trial and error method in EPANET 2.0 and the optimization method in WaterGEMS.
The use of mathematical modelling to analyse the process of mixing waters from different sources in water supply system
Authors: Szuster – Janiaczyk Agnieszka , Brodziak Rafał , Bylka Jędrzej
Published: October 2018

One of the processes that significantly determines the quality of water to consumers is the process of mixing water from different sources in the water mains. Put to the network two or more chemically and biologically stable waters may result in the formation of water that will be deprived of these features. This article presents the german guidelines for analysing water quality for mixing waters from different sources, in various proportions. Then performed an analysis of utility the mathematical models,including quality criteria, for use in network control. An IT tool has been developed to manage selected water quality processes using mathematical modeling. The basis for implementing the tool was a network model created in Epanet integrated with the Matlab.
Changes of catalytic mass grains morphology as a result of their surface covering with iron compounds
Authors: Dobrzański Maciej , Jodłowski Andrzej
Published: October 2018

There were operational problems of not having the ability to remove manganese compounds in one of the country's groundwater treatment plants, despite the fact that the filters were some years earlier fitted with the Multiman 3M catalytic bed inserts. The paper presents the results of analysis of morphological characteristics of fresh and blocked catalytic grains. An equivalent diameter, circularity, convexity, and compactness were used to describe the morphological characteristics of the catalytic mass grains. The obtained results confirmed the assumption that the grains of the catalytic mass were blocked by iron hydroxide and that the cause of WTP operating problems was the failure of the aerator, which resulted in the penetration of iron hydroxide through the upper sand bed layer into the lower catalytic mass layer.
Maintenance of reusable mine workings during the augering mining of coal seams
Authors: Bondarenko Volodymyr , Symanovych Hennadii , Kovalevska Iryna , Chervatiuk Viktor
Published: October 2018

The augering mining of thin and very thin coal seams has been proposed for using the efficiency of this task, related to the stability of reusable mine workings. The interrelation has been established and optimized between the support loading parameters in the extraction working during the augering mining of thin and very thin coal seams with the stress-strain characteristics of the protective monolithic strip of variable rigidity. The strength properties of sand-cement stone for the erection of rigid and yieldable parts of the protective strip are studied. The regression equations are obtained, which allow to determine the rational force, deformation and geometric parameters of the “support – protective strip” system elements during the extraction workings maintenance.
Modeling the process of hydromechanical amber extraction
Authors: Malanchuk Yevhenii , Moshynskyi Viktor , Korniienko Valerii , Malanchuk Zinovii
Published: October 2018

The paper represents a process of hydromechanical amber extraction modeling to obtain input data and substantiate operation parameters of mining equipment to develop the improved hydromechanical technique of amber extraction. Intensification of amber mining process is possible when sandy deposit is saturated by water and air. Moreover, mechanical impact by means of vibration is added. Amber displacement within sandy deposit is considered. The deposit is characterized by environmental resistance when influence factors act on the process of amber surfacing. Amber concentration distribution over a deposit surface involving determination of floating periods of different amber fractions in terms of different operation modes as well as computer experiment concerning the amber grades and its distribution over amber-bearing deposit involved the use of computer environment Matlab. Adequate mathematical model to solve one-dimensional boundary problems for systems of parabolic and elliptic differential equations within partial first-order derivatives on one spatial variable and time has been developed. The model describes accurately the behaviour of different amber fractions within amber-bearing deposit in terms of vibration effect as well as water and air supply.
Expanding of spheres the application of borehole hydro-production technology to develop deposits of non-traditional hydrocarbons
Authors: Pedchenko Mykhailo , Pedchenko Larysa
Published: October 2018

The reserves of oceanic hydrates of methane and natural bitumen in times exceed the stocks of traditional oil and gas. The purpose is the analysis of the adaptation possibility of borehole mining technology for the development of bituminous sands deposits and marine gas hydrates was the purpose of the study. The variants of the HBM technology adaptation for the development of bituminous sands and gas hydrates deposits are proposed. The method of extracting gas hydrates based on HBM technology involves them removal without the energy consumption for phase transition. The main advantages of the development of bituminous sands deposits on the basis of HBM technology are: the possibility them extraction in the range of depths 75 – 200 m, the potential high rate of bitumen extraction, the separation of bitumen from the rock in production, the minimum impact on the environment, the possibility of conducting extraction of natural bitumen in areas covered with water.
Investigation of muck drawing in blocks with trapezoid sills
Authors: Stupnik Mykola , Kalinichenko Olena
Published: October 2018

The article is aimed at determining regularities of muck drawing in blocks and developing the technology of enhancing of muck ore parameters through shaping a trapezoid block sill. To confirm the suggested assumptions, study regularities of forming and determine contours of crests after full muck drawing from the second stage blocks, laboratory experiments have been conducted on drawing muck ore on the boundary with solidifying backfill massif of I stage stopes. For the first time there have been determined numerical dependencies of ore losses in crests on the contact with the solidifying backfill massif of the I stage stopes after ore drawing from the II stage blocks on the dead stope height and dips of side surfaces of trapezoid basis of sill pillars when forming the trapezoid sill with inclined side surfaces of the lower part of the I stage stopes. There are developed methods of calculating ore losses in crests on the contact with the solidifying backfill massif of I stage stopes after muck drawing from the II stage blocks. There are proposed methods of determining optimal parameters of mining ore deposits considering minimization of re losses in crests and increase of muck extraction from II stage blocks.
Results of the experimental research of the heat-transfer jet pressure to the rock surface during thermal reaming of the borehole
Authors: Voloshyn Oleksii , Potapchuk Iryna , Zhevzhyk Oleksandr , Zhovtonoha Mykola
Published: October 2018

The performed analysis of scientific sources confirms the existence of a small number of publications devoted to the experimental research of the gasdynamics and plasmodynamics of jets used as a heat-transfer medium in the thermal methods of mine rocks destruction. There are almost no experimental and theoretical publications related to the multiple-jet plasmotrons research. The expediency of own experimental researches performing has been substantiated concerning the lateral inflow of heat-transfer medium high-speed jets on the borehole surface. An experimental research has been made of the interaction between the heat-transfer medium high-speed jets and the surface of the borehole imitated by the through duct. The further prospects of this work are the following: to determine the gas velocity along the lateral surface of the through duct and the value of the heating capacity coefficient from the heat-transfer medium to the lateral surface of the through duct, which imitates the rock surface in the borehole. These parameters are required for creating a mathematical model of the brittle destruction of rocks.
Ash as an alternative source of raw materials
Authors: Svietkina Olena , Tarasova Hanna , Netiaha Olha , Lysytska Svitlana
Published: October 2018

The objective of the work is to study the aluminosilicate fractionation from fly ash, physical and mechanical properties of fly ash derived from the Thermal Power Plants (TPP) wastes. Ash, carbon concentrate (unburned carbon), ash concentrate and products of their treatment with reagents were tested by optical methods. The particle morphology of the objects of research was studied with the scanning electron microscope REM-100. The composition of the ash phases was investigated using the X-ray diffractometer DRON-2. A dispersed analysis of the TPP fly ash suggests a conclusion that it is advisable to separate particles of a narrow grain-size class within the range from 40 to 150 μm with an ash content of about 33%. The first product may be enriched by flotation method. Such a coal product may be used as a reducing medium in metallurgical processes, agglomeration, etc. The calorific capacitance of the concentrate is about 6000 kcal/kg (25000 kJ/kg).
The study of melting process of the new plugging material at thermomechanical isolation technology of permeable horizons of mine opening
Authors: Sudakov Andrii , Dreus Andrii , Sudakova Diana , Khamininch Oleksandr
Published: October 2018

The article presents the results of experimental and theoretical studies, the purpose of which was to substantiate the technology of drilling wells isolation using new thermoplastic composite material. The basis of the proposed material is gravel, and secondary polyethylene terephthalate acts as a binding material. The use of the proposed insulation material avoids a number of disadvantages specific for traditional grouting mortars. The technology of material application provides its melting in a well by thermomechanical drilling. The article deals with the issues, related to the substantiation of the optimal formulation of a thermoplastic composite material based on secondary polyethylene terephthalate, and the determination of rational operating parameters of thermomechanical drilling, which allow to melt effectively the material at the bottom of a well. The possibility of material application for the insulation of absorbing horizons in borehole conditions has been proved. Based on the analysis of the heat balance at the bottom of a well, the calculation procedure has been proposed and the dependences of the velocity and time of thermomechanical melting of the grouting thermoplastic composite material on the operating parameters of drilling, thermal properties and geometric characteristics of the drill bit, have been determined.
Analysis of patterns of the open-pit mine water influx formation in the conditions of the Inhulets iron ore deposit using a three-dimensional geofiltration model
Authors: Tymoshchuk Vasyl , Sherstiuk Yevheniia , Morozova Tamara
Published: October 2018

The purpose is to study the patterns of groundwater influxe formation within the north-eastern side of the Private Joint-Stock Company “Inhuletskyi hirnycho-zbahachuvalnyi kombinat” (PJSC INHZK) open-pit mine in the conditions of disturbed hydrodynamic regime of the eastern adjacent side of the open-pit mine by the developed three-dimensional geofiltration model. The patterns have been determined of the open-pit mine water influx formation on the basis of a complex analysis of the actual data related to geological and hydrogeological structure of the iron ore deposit, the intensity and character of groundwater influx within the eastern side of the open-pit mine, and the results of numerical simulation of geofiltrational processes. By the results of inverse problems solutions, the geofiltration model reflects adequately the geological, hydrogeological, and geotechnical conditions of the studied territory where the technogenically disturbed hydrodynamic regime have been formed; the calculated values of the open-pit mine water influx within the eastern side of the open-pit mine and its north-eastern site, have been determined. It has been found that the values of groundwater influx and their distribution within the eastern side of the open-pit mine and its north-eastern site depend on the manner of the water-permeable alluvial strata occurrence on the eroded surface of seat clays, and the existence of a technogenic aquifer near the rock-disposal dump base at the adjacent site of the open-pit mine. The results of this research form the basis for a substantiation of technical solutions for dewatering the north-eastern side of the PJSC INHZK open-pit mine in the conditions of further development of mining operations, and for determining the hydrodynamic parameters of dewatering facilities.
Scientific and methodological foundations to develop numerical hydrodynamical models of mine fields in Donbas
Authors: Zahrytsenko Alina , Podvigina Olena , Dereviahina Nataliia
Published: October 2018

The paper considers specific character of hydrogeological problems arising during the whole cycle of a mining enterprise operation; the most reliable their solutions are implemented in the context of numerical hydrodynamical models of mine fields. Basic approaches to schematize laminated carbonic formation through simplification of natural rock mass permeability have been substantiated; prediction algorithm of its changes during temporal transformation has been developed. Numerous identification problems solving in the process of modeling mine fields has helped understand that water inflow amount cannot be correlated with the extension of mining area. Within the areas with roof caving, permeability of carbonic formation is a time variable which value increases 10 – 15 times in the context of rock displacement, halves after 5 –10 years and nears natural values after 15 –20 years. In the context of Western Donbas, the modularized schemes have been tested while solving problems concerning filtration control within mine fields and their surface influence areas with high confidence of hydrogeological forecasts.
Development of a three-parameter model of the shoe brake contact interaction with the drum in mine hoisting machine
Authors: Zabolotnyi Kostiantyn , Zhupiiev Oleksand , Molodchenko Artur
Published: October 2018

For safe operation of mine hoisting machines (MHM) in the mining industry, it is necessary to provide high constructive reliability of brake systems, in particular, brake systems based on the block brake. The contact interaction of the brake with the translational movement of the shoes applied in MHM, remains insufficiently studied. In particular, it is necessary to develop a technique for accurate determination of the braking moment and forces in the elements of the brake linkage, as well as to study the nature of the pressure distribution along the brake beam. The purpose of this article is to simulate the contact interaction of the MHM brake taking into account the coefficient of friction, the ratio of the flexural stiffness to the longitudinal stiffness of a beam, as well as the ratio of the transverse stiffness of a lining to the flexural stiffness of a beam. The application of the developed model will help to reduce the maximum contact pressure in the shoe brakes of the mine hoisting machines and will allow more accurate calculation of the braking moment value compared to existing methods.
Comparison of Case-Based Reasoning and Dempster Shafer on Expert System of Cassava Disease Identification
Authors: Minarni  , Warman Indra , Yuhendra  , Handayani Wenda
Published: October 2018

This study aims to develop a web-based expert system that can identify cassava disease using Case-Based Reasoning Method and Shafer Dempster Method, and to know the performance comparison of both based on the accuracy of identification. Case-Based Reasoning (CBR) is a computer-generated system that uses old knowledge to solve new problems. CBR provides solutions to new cases by looking at the oldest cases that are closest to new cases. The identification process is done by entering new cases containing the symptoms to be identified into the system, then perform the process of calculating the value of similarity between the new case and the base case using the nearest neighbor method. Dempster Shafer based on two ideas is the idea of obtaining degrees of confidence of subjective possibilities and the rule of dempster safer itself to combine degrees of confidence based on the evidence obtained. This expert system is built using PHP programming language and MySQL data base. The output of the system is the percentage of identification result of both methods. Testing and analysis results show that Case-Based Reasoning provides better identification accuracy than Dempster Shafer.
Implementation of Maximum Power Point Tracking to Improving the Solar Cell Efficiency
Authors: Bandri Sepannur , Zulkarnaini Zulkarnaini , Sofian Andi
Published: October 2018

The sun is one of renewable energy sources. The use of sunlight using solar panels as a power plant began to be developed to reduce the use of fossil fuels. Solar panels have the advantage of being environmentally friendly because they do not have pollution-generating waste, are inexpensive and easy to apply. The power generated by solar panel is influenced by temperature and light intensity factor. The main problem of using solar panels is its efficiency is still low. This research presents an attempt to improve the energy conversion efficiency by solar panels by using Maximum Power Point Tracking method. The main principle of this method is adjusting the output voltage from the solar panel to obtain maximum power for different intensity of sunlight. The solar panel output voltage setting is performed using a buck boost converter controlled by MPPT system. The simulation results show that the use of this method of solar panel output power is higher by 64,78% -87,06% than without MPPT.
The Risk Analysis of Andalas University Hospital Construction Project
Authors: Zaidir  , Putri Melani Novia , Hasan Alizar
Published: October 2018

Construction project activities have various risks during their implementation. Every work item on the project has different levels of risk and can affect the project so that it will have an impact on increasing cost and time of project completion. PT. Adhi Karya Tbk is carrying out the project of Andalas University Hospital, where in its implementation there will be many possibilities of risks that will occur. Therefore, it is necessary to identify and analyze the variables of risks that may occur as well as proposing appropriate risk mitigation measures for minimize the potential risks. Risk identification and risk analysis were done using Risk Breakdown Structure (RBS) and Analytic Hierarchy Process (AHP) method respectively. Based on data compilation, variables of risk are grouped in 4 types, namely risk of engineering consist of 8 variables, risk of production consist of 5 variables, risk of construction consist of 9 variables and risk of financial consist of 2 variable, with total of risk are 24 variables. Risk analysis with AHP method is obtained 5 (five) risk priority based on the highest value on each risk type. The five priority risks were a risks of increasing of material prices (extreme), a risk of increasing of procurement costs (high), workplace accidents risk in the project area (medium), mistaken translating the DED to shop drawing (medium) and a quality of goods and services produced by vendors not meet the specifications in contract (medium). To reduce the possibility and impact the risks posed mitigation measures for the risk priority highest were proposed.
Seismic Performance of Existing R/C Building with Irregular Floor Plan Shape
Authors: Agus  , Ridwan Muhammad , Ramadhana Febriyan
Published: October 2018

Bu33333333ilding with irregular floor plan has the eccentricity of force to the centre of building isappears to be more susceptible to deformation and damage when subjected to earthquake movements than with regular floor plan. This study aims to determine the seismic performance of buildings with the irregular floor plan in displacement and drift by service and ultimate performance limit.The object of research is Padang Pariaman public works office building. The evaluation method used non-linear static analysis(Pushover) which is one method to evaluate the seismic performance of the building.Pushover analysis performed by providing a static load in the lateral direction gradually to achieve a specific displacement target. This research is based on SNI-1726-2012, ATC-40 and FEMA 356. The results of the analysis show that the maximum lateral force of 10909.9 kN occurs in step-6 pushover analysis with a displacement of 0.165 m, maximum drift = 0.0705 m and maximum in-elastic drift = 0.025 m.This means the building is included in the IO (Immediate Occupancy) performance level. Although there is damage from small to medium level, still has a big threshold against the collapse, which means the building is safe against the earthquake.
Development of a Relative Vulnerability Index (RVI) for Estimation of Building Vulnerability towards Tsunami Hazard
Authors: Honesti Leli , Majid Muhd Zaimi Abd , Djali Nazwar , Muchlian Meli , Syofyan Z
Published: October 2018

Tsunami hazard is an adverse event, which causes damage to properties and loss of life. The study on the effects of tsunami hazard on building vulnerability can help establish and improve the resilience of the building. The problem in assessing the building vulnerability towards tsunami hazard is significant whereby available models for assessing the risk are not applicable for buildings in Padang, Indonesia. The study developed a new Relative Vulnerability Index (RVI) model to estimate building vulnerability for assessment the risk. Literature review was carried out with regards to model development. The model was grouped in two categories of vulnerability, namely the Water Inundation (WI) and the Building Vulnerability (BV). The water inundation comprises tsunami inundation factor. Then, the building bulnerability consists of both internal and external factors. Contribution of each factor is 1/3 or 33.33% of the overall weighting of the new RVI scores. The new RVI model has applied a formula of 1/3 water (tsunami) inundation factor + 1/3 internal factor + 1/3 external factor. The total value of all weights put together should be equal to 100. To use the model, it is necessary to investigate two internal and external factors based on the characteristics of a building and specific geographichal feature of an area. In conclusion, this study has successfully developed a new RVI model for building vulnerability towards tsunamis. In comparison to other approaches, the model offers an adaptable methodology for the characteristics of the buildings and spesific geographical features of the area.
Literature Review on Relationship Building for Community-academic Collaboration in Health Research and Innovation
Authors: Chak Choiwai Maggie
Published: October 2018

In response to European Commission Horizon 2020’s call for ‘science-for-and-with-community’, scholars have recognized the need to conduct ‘responsible research and innovation’ and engage more with communities to combat today’s complex health challenges. Hence, higher priority has been placed to cooperate with communities in health research and innovation development to better match societal values, needs and expectations. Accordingly, the approach of community-based participatory research (CBPR), the ‘gold standard’ within the community-engaged research spectrum, is the most widely discussed. However, it is seldom achieved in reality, as it requires establishment and maintenance of open, transparent, trustful and ongoing relationships between community partners and academia to succeed. Paradoxically, despite of the significance of quality collaborative relationship to the quality and success of community-academic collaboration, the key elements to achieve it were seldom discussed.Herein, the literature review aimed to (1) discuss the previous experiences and challenges in building and sustaining community-academic collaborative relationships; (2) examine the relationship building strategies for quality collaborative relationships; and (3) identify the potential research gaps for future research.Focusing on the area of health research and innovation, peer-reviewed articles, books and grey literature related to building and sustaining relationships in community-academic collaboration published between 1998 and 2018 were identified using the Web of Science, PubMed and Google Scholar bibliographic databases and Google search engine. Literature available in full-texts and English language with a focus on relationship aspects of community-academic collaboration were examined. Previous literature suggested thatacademics and community members encountered common challenges in experiencing inequitable relationships, distrust, divide between academia and community, uncommon norms of power sharing, dissemination of results and lack of resources for maintaining long-term relationships. Two approaches of relationship building: (1) personal qualities and competence, and (2) actions for relationship building from the beginning to the end stages of collaborative relationship were discussed. Literature revealed that the ways that academics approach, collaborate, communicate with and maintain in the community had significant impact on both current and future collaborative relationships. In addition, academics differed in acceptance and readiness towards community engagement, which could be attributed to the differences in personal qualities and competence. Future research should target on identifying the factors contributing to such individual differences and compare its impact on the quality of relationship with community, so as to better cultivate individuals’ readiness and capacity towards community engagement and effective relationship building with community.
The Formation of Food Cluster in Indonesia
Authors: Lantu Donald Crestofel , Herliana Sri , Rosmiati Mia , Aina Qorri , Lawiyah Nur
Published: October 2018

Cluster has an important role in developing the existing resources in an area to be economic value. Companies gain competitive advantage through competing with each other. However, there is now an increased awareness that to ensure survival, it is necessary to balance industrial advocacy and personal interests. Thus, cluster operations are characterized by competition and cooperation, where the role of quadruple helix plays a role in it. SME clusters occur in every country, considering that SMEs are an important element in the economy of the country. Most SMEs in developing countries are located in industrial clusters. Despite the limitations in organizational resources and capacity, the grouping of companies in geographic proximity is capable of improving the performance of the companies within them. Therefore, cluster formation becomes the main attraction for deeper examination, how clusters are formed and how the process and role of elements in it. This study involves two different case studies of the chips and milk dairy clusters, both located in Cimahi, West Java. West Java is one of the provinces that have potential in the development of food and beverage clusters. This research uses qualitative data approach and supported by literature data support. From the analysis result, both clusters have different cluster forming approach, where the formation of clusters of chips, formed spreads and dairy cluster vertically.
Determinant Factors of Information Technology Adoption in Creative Business and The Result of Its Application: Case of SMEs Cluster in South Bandung
Authors: Dhewanto Wawan , Lestari Yuliani Dwi , Heliana Sri , Aliya Qonita Himmatul , Lawiyah Nur
Published: October 2018

The expansion of information technology and electronic commerce in Indonesia has provides the opportunities for entrepreneurs to develop their business. It can be seen from the rapid growth of SMEs and creative business in Indonesia increased from year to year. Most SMEs have adopted information technology and electronic commerce (e-commerce) for their business. E-commerce was really famous in today business to be discussed. In general e-commerce is radically changing traditional ways of doing business. The government says ecommerce has huge potential to build the economy of the nation because the large number of internet users increase continuously and become the first factors of adopting technology of ecommerce by the organization. Various research has been analyzed widely the adoption of ecommerce by SMEs. The purpose of this research is to examine determinant factors of adoption of technology ecommerce in SMEs and the impact on their organizational business as a result of level of success. Firstly, empirically investigate the determinants factors in internal and external by conducting interview. Secondly, provide new direction addressing why the business adopt ecommerce and what are concerning factors in adopting ecommerce with a successful. Analysis was done by comparing and analyzing six SMEs in South Bandung in a cluster that have same of types of products and adopt technology ecommerce but have a different in many ways. As the result of this study, limited human resource capacity and skills is the main constrains faced by SMEs when adopting technology ecommerce.
Chercheur-ressource: questions d’engagements sur le terrain
Authors: Pelé-Peycelon Marine , Alcade Céline
Published: October 2018

Notre communication envisage la notion de ressource à travers la façon dont le chercheur peut être instrumentalisé comme une ressource par et pour le terrain qu’il observe. Nous analyserons de quelle manière s'est construit ce processus d'instrumentalisation et quelles ont été les problématiques de positionnement et d’analyse du chercheur. Dans ce but nous nous appuierons sur deux enquêtes de terrain (Pelé-Peycelon & Veillard, 2017) ; (Alcade, 2017) qui présentent des similarités méthodologiques (ancrage ethnographique, immersion, observation participante). Nous avons identifié plusieurs modalités selon lesquelles nous avons été utilisées comme ressources. D’une part, nous avons été sollicitées par les acteurs de nos terrains au service de l’activité que nous observions. Nous avons également par notre présence, ouvert un espace de réflexivité dont les acteurs se sont saisis en faveur de l’amélioration de leurs pratiques. Etre ressource a finalement constitué une ressource supplémentaire pour nous dans notre recherche. Cela nous a donné accès à des données qui auraient été sinon invisibilisées et ont enrichi l’analyse que nous pouvions faire des contextes et situations étudiés.
Concevoir des ressources pour enseigner, un levier pour le développement des compétences informationnelles des professeurs?
Authors: Messaoui Anita
Published: October 2018

Les enseignants français conçoivent depuis longtemps leurs ressources d’enseignement. Avec l’accroissement des ressources numériques, ces tâches de conception se sont complexifiées. Quelles sont les compétences informationnelles en jeu dans le travail de conception des ressources d’enseignement ? Peut-on définir une expertise documentaire des enseignants en rapport avec leur travail sur les ressources ? Notre contribution propose de répondre à ses questions en nous basant sur l’analyse du travail documentaire d’une enseignante d’anglais de collège pendant la préparation d’une nouvelle leçon. À partir de l’approche documentaire du didactique et du concept de schème, deux schèmes documentaires ont été identifiés et caractérisés : « sélectionner une ressource » et « garder la trace d’une ressource ». Des connaissances et des règles d’action associées à ces schèmes ont été mises en évidence, prouvant que ces deux schèmes constituent une mise en action des compétences « évaluer une information » et « retrouver une information ».
Digital preservation of language, cultural knowledge and traditions of the indigenous Semai
Authors: Renganathan Sumathi , Kral Inge
Published: October 2018

In this paper we describe two community-based participatory research projects in an Orang Asli community that set out to document their local knowledge and culture. We describe how with the support of technology we are able to document indigenous oral traditions and practices that are on the verge of disappearing. The Semai are the largest Orang Asli community in Peninsular Malaysia and mainly live in the states of Perak and Pahang. Like in many other indigenous contexts, the Semai peoples’ transition from an oral culture to a literate culture is relatively recent. In this paper we discuss how our long-term relationship has facilitated two projects using digital media technology that focus on the documentation of local knowledge and culture of the community members in a Semai-speaking village in Perak. Elders in this community, having local knowledge accumulated over generations through direct experiences and participation, were the main source of information for these documentation projects, while younger people assisted with film and audio recording, editing, as well as language transcription and translation. The elders in this Semai community recognise the value and importance of transmitting their local culture and knowledge to the next generation. The projects described in this paper led to the production of two short films in 2014, and a book project, which began in early 2017, is currently underway. Thus, this paper highlights how technology is an enabler in the preservation of endangered indigenous knowledge and culture.
Social media influencers - shaping consumption culture among Malaysian youth
Authors: Khalid Nur Leila , Jayasainan Sheila Yvonne , Hassim Nurzihan
Published: October 2018

This study reveals the significance of social networking sites (SNS) that created vast opportunities for cultural awareness and consumption among youth SNS users in Malaysia. Simplicity and user-friendly features on Instagram had heightened interest and growth of its users where the ability to “hashtag” on Instagram identifies current trends based on user-generated images and videos that enable users to generate search results instantaneously. Researchers have argued that SNS users at present trust peer recommendations more than search engines and this phenomenon is evident from their resonance with “social media influencers” (SMIs) who are capable of influencing massive followers through reviews of products, services and social trends on their social media accounts; particularly on dining out and “cafehopping” as a social experience. This study examined the curation of Instagram posts by SMIs and found that their visibility of content created shared voices and reinforced cultural identities among their followers. The content analysis deployed in this study also investigated feedback on the selected SMI’s curation of posts and established that peer engagement is a tangible socialization process that would contribute to the youths’ future use of Instagram as a social, cultural and educational tool.
Continuous Quality Improvement for Calculus Using Mentor-Mentee Approach
Authors: Abdul Karim Samsul Ariffin , Hasni Mohd Mughti , Zainuddin Nooraini
Published: October 2018

This paper proposes mentor-mentee event as a method to improve the performance of the students in Calculus subject for Foundation Third Semester in Universiti Teknologi PETRONAS (UTP). About 40 mentees are selected based on their course work (CW) marks and 20 mentors are chosen from UTP undergraduate students (UG). All the mentees must complete 12 hours within two-days event. In this event, active learning (AL) and cooperative learning (CL) are utilized as a learning method, this includes brainstorming, think pair share, think problem solving (TPS), pair work, turn to neighbor summaries, and etcetera. All the outcomes are analyzed through statistical measurements. From the results, it indicates that, Mentor-Mentee Event has improved significantly the performance of the mentees in the final exam.
Perimetrie in der neuroophthalmologischen Funktionsdiagnostik: Indikation – Methoden – Topodiagnostik
Authors: Ungewiss Judith , Schiefer Ulrich
Published: October 2018

Die Beurteilung von Gesichtsfeldbefunden ist in der neuroophthalmologischen Funktionsdiagnostik elementar: So ist es mithilfe der Perimetrie möglich, bei unklaren Sehstörungen oder dem Verdacht auf Sehbahnläsionen auf nicht invasive Weise Aussagen zur Funktion und Topodiagnostik zu treffen. Bei mehrfacher Untersuchung kann der Verlauf entsprechender Erkrankungen oder auch die Effizienz eines therapeutischen Verfahrens bewertet werden. Dieser Beitrag soll Grundlagen der Gesichtsfelduntersuchung und -diagnostik vermitteln. Dabei wird der Fokus insbesondere auf den Stellenwert der Perimetrie in der neuroophthalmologischen Funktionsdiagnostik gelegt. Sowohl kinetische als auch statische Perimetrieverfahren werden hierbei adressiert, zudem werden gängige Untersuchungsraster und -strategien ebenso wie verschiedene Befunddarstellungsformen und Indizes zur Verlaufsbeurteilung gegenübergestellt. Die Skotomklassifikation und topodiagnostische Bedeutung der Gesichtsfelddefekte werden unter Berücksichtigung von Qualitätsparametern und Plausibilitätskontrollen besprochen.
Biceps Tendon Changes in Youth Softball Pitchers Following an Acute Bout of Pitching
Authors: Barfield Jeff , Plummer Hillary , Anz Adam , Andrews James , Oliver Gretchen
Published: October 2018

Because pitch counts do not exist for softball, pitchers may throw between 1200 and 1500 pitches over 3-day tournaments. With this workload, a common symptom among softball pitchers is anterior shoulder pain. The purpose of this study was to examine long-head biceps tendon (LHBT) changes in youth softball pitchers following an acute bout of pitching. Nineteen softball pitchers (11.89±1.2 years; 158.23±9.71 cm; 61.59±14.76 kg) participated. Images of the LHBT were obtained prior to and immediately following a simulated game protocol. Repeated-measures MANOVA was used to determine if there was a difference in LHBT size before and after the simulated game protocol. There were significant increases in both transverse thickness (t
18=–2.76, p=0.013, 95% confidence interval=–0.050 to –0.007) and longitudinal thickness (t
18=–2.64, p=0.016, 95% confidence interval=–0.060 to –0.007) of the LHBT following an acute bout of pitching. Longitudinal and transverse thickness of the biceps tendon significantly increases following an acute bout of softball throwing. These changes may indicate an inflammation response of the biceps tendon and the biceps pulley.
Substanzgebrauch im Kontext von Trans*: Diagnostik und Implikationen
Authors: Kürbitz Laura , Becker Inga , Nieder Timo
Published: October 2018

Hintergrund Aufgrund von Minderheiten-stress leiden trans* Personen häufiger als cis* Personen an psychischen Störungen, jedoch nicht unbedingt auch häufiger unter schädlichem Gebrauch von psychoaktiven Substanzen. Dennoch kann die Frage der bedarfsgerechten Versorgung besonders dann komplex und relevant werden, wenn Minderheitenstress und schädlicher Konsum z. B. von Alkohol zeitgleich auftreten.

Ziel der Arbeit Es soll die Diagnostik und Versorgungspraxis einer bedarfsgerechten Behandlung von trans* Menschen und die Bedeutung von möglichen Problemen bei schädlichem Substanzkonsum diskutiert werden.

Material und Methoden Literaturrecherche zur Versorgungspraxis von trans* Personen im Suchthilfesystem. Exemplarische Vorstellung von Ergebnissen zum Alkohol- und Drogenkonsum aus einer klinischen Studie mit N=159 trans* Personen (European Initiative of Gender Incongruence, ENIGI), die zwischen 2007 und 2015 in Hamburg eine Behandlung gesucht und an der ENIGI-Studie teilgenommen haben. Darstellung von Wechselwirkungen zwischen Suchterkrankungen und transitionsunterstützenden Behandlungen.

Ergebnisse Trans* Personen haben sowohl transitionsbezogene als auch transitionsunabhängige Bedarfe, die sich an das Gesundheitssystem richten. Hierzu zählen auch Suchtbehandlungen. Allerdings zeigen Ergebnisse aus der Hamburger ENIGI-Studie, dass der Alkoholkonsum von Trans* Personen nicht als grundsätzlich auffällig oder klinisch relevant eingestuft werden kann. Bei insgesamt 5,8% der befragten Stichprobe wurde der Alkohol- oder Drogenkonsum als schädlich oder abhängig eingestuft.

Schlussfolgerungen Suchterkrankungen im Kontext von Trans* sollten im Rahmen eines integrativen und interdisziplinären Gesamtbehandlungsplans zielführend behandelt werden.
Erlösrelevanz depressiver Nebendiagnosen bei somatischen Krankenhauspatienten
Authors: Raths Susan , J. Grabe Hans , Fleßa Steffen
Published: October 2018

Hintergrund Depressionen treten häufig als Komorbidität bei stationären Krankenhauspatienten auf und sind mit vielen medizinischen, aber auch ökonomischen Negativeffekten verbunden (z. B. erhöhte Morbidität und Mortalität, verringerte Lebensqualität, verlängerte Liegezeit). Ziel der Untersuchung ist die Klärung der Frage, ob den zusätzlichen Kosten bei einer komorbiden Depression Erlöse auf Basis des G-DRG-Systems gegenüberstehen, um eine entsprechend notwendige Diagnostik und Therapie zu ermöglichen.

Methodik Zur Analyse der Erlösrelevanz depressiver Nebendiagnosen wurden stationäre Fälle mit vorab festgelegten depressiven Nebendiagnosen laut ICD-10 im Zeitraum von 2010 bis einschließlich 2014 anhand von Abrechnungsdaten des Universitätsklinikums Greifswald selektiert. Nachfolgend wurden die Falldaten unter Verzicht auf die Codierung einer Depression unter Berücksichtigung des jeweils geltenden Abrechnungsjahres recodiert und die Erlöse verglichen (n=6563).

Ergebnisse Bei 115 von 6563 Patienten (1,75%) mit vornehmlich unspezifischen rezidivierenden depressiven Störungen ist eine Veränderung des Erlöses durch die Dokumentation und Codierung nachweisbar. Unter Berücksichtigung des geltenden Basisfallwertes führt die Codierung zu einem Mehrerlös von 216 737,01 Euro für den gesamten Betrachtungszeitraum. Je Fall mit Erlöseffekt (n=115) entspricht dies einem Mehrerlös von durchschnittlich etwa 1885 Euro. Bezogen auf alle Fälle mit depressiver Diagnose entspricht dies einem Mehrerlös von 33,02 Euro. In überwiegendem Maße werden unspezifische Depressionsdiagnosen (z. B. F 32.8 Sonstige depressive Episode) codiert, die nicht schweregradsteigend im DRG-System berücksichtigt werden und demnach keinen Einfluss auf den Erlös haben.

Diskussion In nur sehr wenigen Fällen führt die Berücksichtigung depressiver Nebendiagnosen zu einer Erlössteigerung. Nur wenige depressive Diagnosen haben einen CCL, der mit 1 oder 2 eher gering ist und somit bei ohnehin vorherrschenden Mehrfachkomorbiditäten kaum ins Gewicht fällt. Aufgrund der Erlöskonstellation besteht derzeit kein ausreichender finanzieller Anreiz für die Krankenhäuser, Depressionen vermehrt zu erkennen und zu behandeln, da die zusätzlichen Kosten nicht in gleichem Maße zu erhöhten Erlösen führen. Im Sinne einer systemischen Behandlung müssen Depressionen insbesondere mit Blick auf die zahlreichen Negativeffekte dieser Komorbidität zukünftig stärker im Finanzierungssystem Berücksichtigung finden.
Reisen mit Kindern
Authors: Lindert J. , Kotsias-Konopelska S.
Published: October 2018

Immer mehr Familien mit Kindern unternehmen Auslandsreisen. Die Fortbewegungsmittel sind dabei sehr variabel und die Reiseplanung sehr individuell. Eine kinderärztliche Reiseberatung kann konkret zu einigen Themen erfolgen. Der erste Teil des Artikels befasst sich mit Empfehlungen bei Sonnenexposition, im zweiten Teil wird es um Zeitverschiebung, Klimaanpassung, Höhenkrankheit sowie Rad- und Autoreisen gehen. Als bester Sonnenschutz eignen sich v. a. die Vermeidung direkter Sonneneinstrahlung sowie das Tragen dunkler, dicht gewebter und locker sitzender Kleidung. Ergänzt werden diese Maßnahmen durch Auftragen von Sonnencreme mit passend hohem Lichtschutzfaktor (LSF) und idealerweise physikalischem UVFilter.
Mit Kindern auf Reisen
Authors: Schäfer K.
Published: October 2018

Gemeinsame Reisen können zu den Schmuckstücken im Erinnerungsschatz einer Familie werden. Die positiven Bilder, die unser aller Vorstellung beim Gedanken an einen bevorstehenden Urlaub beherrschen, brauchen aber ein Korrektiv, wie ihn die Arbeit von Unternehmen liefern kann, die sich ausschließlich mit Reisen auseinandersetzen, die völlig unerwartet verlaufen sind. Solche Unternehmen sind die medizinischen Assistancen, die die Leistungsversprechen ihrer Versicherungen in aktive Hilfe umsetzen. Der folgende Artikel gibt Denkanstöße, die dazu beitragen können, eine Reise gelingen zu lassen und dazu, dass Eltern und Kinder nicht allein auf sich selbst gestellt sind, wenn die Reise sich anders entwickeln als geplant.
Wenn einer eine Reise tut: Reisen mit Kindern und intestinale Infektionen als Souvenir
Authors: Maritz E. R. , Tariverdian N.
Published: October 2018

Familien unternehmen immer öfter Fernreisen. Intestinale Infektionen machen einen Großteil der Infektionen auf Reisen und bei Reiserückkehrern aus. Oft wenden sich Eltern vor Familienreisen mit Fragen primär an ihren Kinderarzt. Um kompetent beraten zu können, ist es wichtig, mögliche Infektionen im jeweiligen Reiseland zu kennen.

Die mit Abstand häufigste intestinale Infektion ist die Reisediarrhö, welche durch unterschiedliche – meist bakterielle – Erreger ausgelöst wird. Kinder sind dafür am anfälligsten. Dies liegt zum einen an der erhöhten Vulnerabilität bei noch unreifem Immunsystem und anfälligem Magen-Darm-Trakt und zum anderen an der erhöhten Exposition gegenüber Erregern in der Umgebung durch orales Erkunden (Geophagie). Wurmerkrankungen haben deshalb bei Kindern ebenfalls einen hohen Stellenwert. Bei Durchfallerkrankungen droht besonders bei Kleinkindern die Dehydratation, weswegen die Rehydratation wichtigstes Therapieprinzip ist. In der Prävention spielen allgemeine Hygienemaßnahmen die größte Rolle.