Razlike v zahtevah digitalnih in tiskanih matematičnih učbenikov: poudarek na poglavjih o geometriji

Textbooks have always played an important role in mathematics education. Textbook tasks are widely used by students, so it is important to examine their requirements in order to identify the opportunities students have to learn mathematics. Publishers now produce both printed and digital versions of textbooks. While the requirements of the tasks in printed textbooks have been well examined all over the world, the tasks in digital textbooks are yet to be analysed and systematically developed. The research presented in this paper encompasses the analysis and comparison of the tasks in the printed and digital versions of the same mathematics textbook set. The examined set covers Grades 1 to 4 of primary education in Croatia. The aim was to find what task requirements are predominant in the printed and the digital textbooks, and to determine whether these textbook versions provide a wide variety of task features. In addition, the features and capacities typical of digital tasks, such as interactivity and dynamics, are examined. These task features are particularly important in geometry education for comprehending visual and dynamic geometrical objects and relations. The results show that both the printed and the digital textbook tasks have traditional requirements, with an emphasis on closed answer forms. Moreover, the new opportunities afforded by digital tasks are not realised. These findings reveal the potential of digital tasks as a new area to be explored and developed. (DIPF/Orig.

Respiratory Complications from Acute Corrosive Poisonings in Adults

Introduction: Acute corrosive poisonings are caused by ingestion of corrosive chemicals which are most commonly used as household agents. Intoxications with these kind of agents produce numerous and severe post-corrosive complications of the upper gastrointestinal tract. On the other hand, our experience showed that corrosive agents may also cause injuries of the respiratory system, which makes the treatment very hard and additionally complicates the severe clinical condition of the patient. Objective: The aim of the study is to show the incidence of respiratory complications in acute corrosive poisonings, the need of various clinical investigations and also the treatment and final outcome of these kind of poisoning. Methods: We retrospectively analyzed clinical records of 415 patients hospitalized and treated at the University clinic for toxicology and urgent internal medicine, in Skopje, Republic of Macedonia, in the period between 2007 and 2011. The protocol consisted of methods for analyzing the systemic complications, with an accent on the post-corrosive respiratory complications. Results: From the total number of patients even 98 (23.61%) exhibited systemic complications, from which 51 (52.04%) are respiratory complications. The majority of patients are female (n=40, 78.43%) and the most common complication is pneumonia (n=47). The youngest patient in this study was 14 and the oldest was 87 years old. Conclusion: Besides the gastrointestinal complications in the acute corrosive poisonings respiratory complications are also very often. They complicate the clinical state of patient and very often lead to fatal endings

Identifying bottlenecks in the life cycle of plants living on cliffs and rocky slopes : lack of knowledge hinders conservation actions

Long term survival of plant populations relies on successful reproductive cycle to obtain generation turnover. Focusing on plant species of conservation concern, we brought together a group of plant conservationists from different countries to assess whether the already available information on plant reproductive biology and autecology is adequate for identifying which phases of single species life cycle might act as bottleneck. We compiled a list of 80 plant species of conservation concern living on European cliffs and rocky slopes, for which biological and autecological information was collected from scientific literature, technical reports, and expert knowledge. Results have shown that the available information on species reproductive biology and autecology is inadequate to identify bottlenecks in the life cycle of many species and to provide insights for the practical conservation of many more. Available knowledge is mainly referred to the flowering phase, less on seed production and much less on seedling establishment and on cloning. Meanwhile and noteworthy, flowering resulted to be the less critical phase for the fulfilment of the species life cycle. Overall, with this perspective article we aim to encourage a constructive debate among the scientific community members and policymakers to set up novel concerted strategies for the conservation of plant species of conservation concern. The challenge of the discussion is the implementation of the current approach with new biological and ecological information to be exclusively targeted at identifying the constraints that limit the generation turnover and furnishing specific indications for active management.peer-reviewe

Risanje v vlogi reprezentacij ucencevih temeljnih geometrijskih pojmov in prikazovanje dozivljanja pouka geometrije

The important role that geometry plays in the mathematics curriculum has been extensively documented. However, the reduction of geometry in school mathematics, and the focus on basic computation and procedures, raises the question of the competencies students acquire and the classroom atmosphere in geometry lessons. The goal of this multiple case study was to analyse four students’ conceptions of geometry and the emotional atmosphere in geometry lessons on an individual level. Drawings were used as external representations of the students’ geometrical ideas and the emotional atmosphere. The results show that the participants have a narrow understanding of geometry, and that geometry teaching in their classrooms is reduced to frontal teaching with very limited communication. Nevertheless, the emotional atmosphere in these four cases could be described as positive or ambivalent. Based on the data, the results are discussed not only with regard to the utility of drawings as a research method to gain insights into students’ conceptions of geometry and emotional atmosphere in geometry lessons, but also with regard to their theoretical and practical implications. (DIPF/Orig.

Koloniala monument, vandalism och avkolonialisering : En fallstudie i Joiri Minayas arbete

Denna uppsats är grundad i en fallstudie av den multidisciplinära konstnären Joiri Minayas arbete och den konstnärliga interventionen ”Ecubrimiento” av Columbusstatyn på Columbustorget i Santo Domingo, som genomfördes i januari 2021. Uppsatsen undersöker frågor om koloniala monument och deras närvaro i samtida postkoloniala stadsmiljöer. Fallstudien fokuserar på Minayas arbete med att förnya koloniala statyers budskap, utan att inverka på eller förstöra dem. Slutligen drivs en diskussion kring neo-kolonialism och hur koloniala monument kan leva vidare i en ny kontext för att skapa en dialog om avkolonialisering. Denna uppsats diskuterar relationen mellan en staty, en stad och en samtida konstnärs vision, men hanterar även frågor om förtryck och vandalism i relation till postkoloniala förhållanden.

Influence of Age on the Survival and Mortality Rate in Acute Caustic Poisonings

Objective: Acute poisonings with caustic substances can cause severe chemical injuries to the upper gastrointestinal tract, which can be localized from the mouth to the small intestines. They are seen very often among young people in their most productive years. The aim of this study is to examine the influence of patient’s age on the mortality rate and survival of patients with acute caustic poisonings, and also to analyze their correlation. Material and Methods: We studied medical records from 415 patients, aged between 14 and 90 years, who were hospitalized and treated at the University Clinic for toxicology and urgent internal medicine, Skopje, Republic of Macedonia, in the period between 2007 and 2011. Results: In the survey we included 415 patients with acute corrosive poisonings, from which 295 (71.08%) were females and 120 (28.92%) were males. 388 (93.49%) from the total number of patients ingested the corrosive agent with suicidal attempt and 27 (6.5%) ingested it accidentally. Conclusion: Unregulated production, import, packing and labeling of various caustic agents, due to inappropriate legislative, made them one of the most often abused substances in everyday life, especially in developing countries where the number of caustic poisonings rises

Vision of total renewable electricity scenario

This paper analyses the reality of total renewable electricity scenario (TRES) from renewable energy sources (RES) as a totally green strategy of electric energy production. The paper is based on the EREC's Agency forecast until the year 2040, which foresees the share of 82% of RES, extended to 100% of RES. The key element that creates conditions for achieving this ambitious scenario is an innovative combination of RES and pump storage hydroelectric (PSH) power plants, the so-called Concept-H, which can simultaneously use the energy of local RES (sun and wind) and local precipitation (natural waterflows) and in this way can provide continuous supply of electric power and energy to consumers. The methodology is based on the model of equivalent RES and equivalent reservoir that allows a comprehensive view of available RES and hydro system. The total required land use of RES system would be 29,517 km2 of RES (which would amount to about 0.5% of the total technical potential of using RES), total reservoir volumes would be 880 km3 (which is only 8% of all artificial reservoirs built in the world to the date) and the orientation estimate of investment in TRES would then be approximately 1% of world GDP in 2009, which clearly shows that the TRES is realistically feasible. It has been shown that implementation of the green strategy of energy balance fulfilling can be realized with present day technology. Precisely this fact shows that further increase of efficiency of RES and their combining into RES-PSH power plants, along with increase in the cost of classic power fuels and the growing needs for environment protection, the proposed solution of TRES realization could be widely important and thus become a serious alternative to the existing energy strategies and a guideline to decision makers throughout the world.Sustainable development Energy policy Renewable energy Hydro energy Electricity Concept-H

Respiratory Complications from Acute Corrosive Poisonings in Adults

Introduction: Acute corrosive poisonings are caused by ingestion of corrosive chemicals which are most commonly used as household agents. Intoxications with these kind of agents produce numerous and severe post-corrosive complications of the upper gastrointestinal tract. On the other hand, our experience showed that corrosive agents may also cause injuries of the respiratory system, which makes the treatment very hard and additionally complicates the severe clinical condition of the patient. Objective: The aim of the study is to show the incidence of respiratory complications in acute corrosive poisonings, the need of various clinical investigations and also the treatment and final outcome of these kind of poisoning. Methods: We retrospectively analyzed clinical records of 415 patients hospitalized and treated at the University clinic for toxicology and urgent internal medicine, in Skopje, Republic of Macedonia, in the period between 2007 and 2011. The protocol consisted of methods for analyzing the systemic complications, with an accent on the post-corrosive respiratory complications. Results: From the total number of patients even 98 (23.61%) exhibited systemic complications, from which 51 (52.04%) are respiratory complications. The majority of patients are female (n=40, 78.43%) and the most common complication is pneumonia (n=47). The youngest patient in this study was 14 and the oldest was 87 years old. Conclusion: Besides the gastrointestinal complications in the acute corrosive poisonings respiratory complications are also very often. They complicate the clinical state of patient and very often lead to fatal endings

Livskvalitet hos patienter med Sjögrens Syndrom

Bakgrund: Sjögrens syndrom är en autoimmun, inflammatorisk sjukdom som främst drabbar kvinnor. Sjukdomens komplexa symtombild medför att sjukdomen ofta är svårdiagnostiserad varför många patienter tvingas leva med symtom som orsakar lidande och i längden riskerar att ge svåra komplikationer på många av kroppens viktigaste organ. Syftet: var att beskriva hur patienter med Sjögrens syndrom upplever sin livskvalitet. Metoden: är en litteraturöversikt inspirerad av Goodmans sju steg. Resultatet: grundade sig på tio vetenskapliga artiklar, en kvalitativ och nio kvantitativa som togs fram ur databaserna CINAHL och PubMed. Resultatet visade att patienter med Sjögrens syndrom upplever både hög och låg livskvalitet i varierad grad inom områden som rör fysisk-, social- och psykiska aspekter. Tidigare diagnos av sjukdomen kan minska lidande, underlätta det dagliga livet samt i flera fall förhindra komplikationer. Fysisk aktivitet som regelbunden träning har visat ha en positiv inverkan samt att många patienter har hoppet om en ljusare framtid kvar. I resultatet framkom även att många patienter känt sig misstrodda av vårdpersonal varför mer kvalitativ forskning efterfrågas för att öka kunskap och förståelse inom vården.Background: Sjögrens syndrome is an autoimmune, inflammatory disease mainly affecting women. The syndromes set of complex symptoms makes diagnosis difficult why many patients of sjögrens live with symptoms causing suffering and eventually risking organ damage. Intent: to describe how patients of sjögrens syndrome experience their quality of life. Method: a literature survey inspired by the seven steps of Goodman. Result: based on ten scientific articles, nine quantitative and one qualitative from the databases PubMed and CINAHL. The result shows that patients of sjögrens syndrome experience both high and low quality of life regarding physical, social and mental aspects. Early diagnosis of the disease can alleviate suffering, help day to day life and in cases prevent complications. Physical activity such as regular workout has proven positive making many patients hopeful about the future. The results also showed that patients felt mistrusted by healthcare staff making more qualitative research required to increase the healthcare’s knowledge and understanding of sjögrens syndrome