60 research outputs found
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From Aha Moments to Ethnomethodology: A Conversation with Hugh Mehan
No full textOn April 1, 2015, Professor Hansun Waring’s doctoral seminar had the great pleasure and honor of being joined over Skype by Dr. Hugh (Bud) Mehan, Professor Emeritus at the University of California, San Diego and author of the 1979 classic Learning Lesson: Social Organization in the Classroom. Dr. Mehan has done extensive research on classroom organization and interaction, educational testing, tracking and untracking, construction of student identities in the classroom, and so on. He has managed to achieve the delicate and yet crucial balance that so many educators and education researchers aspire to—the balance between doing research and improving the world. He has not only shaped the academic discourse on education issues but has been directly working with the most vulnerable members of our society in overcoming and amending those issues. His work has been an inspiration to so many of us whose research passions and real-life concerns lie in education, classroom interaction, and social inequity.
The Skype meeting was proposed as a continuation of conversation inspired by Dr. Mehan’s invigorating invited lecture at the 4th Annual LANSI Conference at Teachers College in October 2014. Members of Dr. Waring’s Spring 2015 seminar (Nancy Boblett, Catherine Box, Sarah Creider, Donna Delprete, Rong Rong Le, Heidi Liu, Carol Lo, Saerhim Oh, Elizabeth Reddington, Gahye Song, Nadja Tadic, Junko Takahashi, and Di Yu) compiled a list of questions for Dr. Mehan in advance and asked follow-up questions to his responses during the meeting. We are very pleased to share with our journal readers a transcript of our conversation, and we hope you will find his words as inspiring and illuminating as we have
Overall Control - The Case against Dusko Tadic and the Concept of Control in the ILC-Articles on State Responsibility
No full textIn this text the author attempts to extract the criteria for establishing ''overall control'' as described by the Appeals Chamber of the International Criminal Tribunal for the Former Yugoslavia in the case against Dusko Tadic. This test was formulated by the ICTY Appeals Chamber in an effort to qualify the relationship between the Federal Republic of Yugoslavia and the army of the Serbian Republic in Bosnia. The legal question was whether this armed force could in fact be linked to the Federal Republic of Yugoslavia due to the high level of control the latter exercised over the group, thus making the conflict international and granting the civilians under its control the status as ''Protected Persons'' in the meaning of Geneva Convention IV, Article 3. The Appeals Chamber argued that the rules of attribution in International Law on State Responsibility must by necessity require the same standard of relationship for attribution of the acts of the armed force to the state, as International Humanitarian Law requires for finding that the participation of that force constitutes foreign involvement in an internal conflict. It thus sought guidance in the rules of attribution from International Law on State Responsibility and the Case Concerning Military and Paramilitary Activities in and against Nicaragua of the International Court of Justice. Rather than accepting the test devised in Nicaragua, often referred to as the ''effective control'' test, the Appeals Chamber found that it was not suitable for acts of ''organized groups'', where instead international law dictated the standard of ''overall control''. The author has examined all the criteria for establishing this standard of control and how it can be used to solve problems of control in International Law on State Responsibility. First, the criteria for concluding what qualifies a group as ''organized'' and which groups can come into question for use of the standard is investigated. The author examines the cases provided by the Appeals Chamber as illustrations of the use of the standard in international law, to extract the limits of these criteria. Second, the author evaluates the importance of support given to the group in the form of arms, training, funding and intelligence for establishing a potential to exercise control. Having done this the author continues to the level of direct control, exercised by the state over the group, and the standard required to qualify it as ''overall control''. Finally, the author uses the conclusions drawn to formulate a suggestion of how to phrase the ''overall control'' test for use in International Law on State Responsibility
Racism, Balkanism and Nesting Orientalism along the Balkan Route - The situation for migrants and locals at the border to Una Sana canton since 2015
No full textDiese Masterarbeit beschäftigt sich mit rassistischer Gewalt an der Grenze zwischen Kroatien und Bosnien und Herzegowina mit Fokus auf die Region Una-Sana Kanton. Seit 2015 ist die Zahl der Menschen, überwiegend aus dem Nahem Osten und Nordafrika, die über Südosteuropa in Richtung Europäische Union fliehen, deutlich gestiegen. Nach der formellen Schließung der sogenannten Balkanroute sind viele Menschen auf der Flucht an den Grenzen innerhalb dieser Region gestrandet. Eine der Folgen dieser EU-Migrationspolitik ist die gewaltsame Zurückweisung von Migranten von einem Staat in einen Anderen. Die Situation an der Grenze wird durch drei miteinander verbundene Dimensionen analysiert: Rassismus, Balkanismus und Nesting-Orientalismus. Auf globaler Ebene spiegelt sie die Spaltung zwischen dem globalen Norden und dem globalen Süden wider; innerhalb Europas markiert es die Hierarchie zwischen der EU und Südosteuropa; und innerhalb der Region stellt es die Grenze zwischen dem EU-Mitgliedstaat Kroatien und dem Beitrittskandidat Bosnien und Herzegowina dar. Basierend auf Expert*innen-Interviews mit Aktivist*innen, Journalist*innen, Forscher*innen und humanitären Arbeiter*innen, die sich mit dieser Grenze befassen, untersucht diese Arbeit, wie diskriminierende Grenzpraktiken Zugehörigkeit und Ausgrenzung erzeugen und verstärken. Es wird analysiert, wie Migrant*innen aus dem globalen Süden als Bedrohung konstruiert, unsichtbar gemacht und routinemäßiger Gewalt und Rechtsverweigerung ausgesetzt werden. Durch die Anwendung einer intersektionalen Perspektive von Rassismus, Balkanismus und Nesting-Orientalismus analysiert die Arbeit die Folgen dieser Gewalt sowohl für Migrant*innen als auch für lokale Bewohner*innen nach 2015. Letztlich trägt sie zu einem tieferen Verständnis der diskriminierenden Dimensionen der EU-Migrationspolitik und der Reproduktion globaler Machtasymmetrien an einer EU-Außengrenze bei.This master’s thesis investigates racial violence at the border between Croatia and Bosnia and Herzegovina, focusing on the Una-Sana Canton region. Since 2015, the number of people fleeing through Southeast Europe toward the European Union has increased significantly. Following the formal closure of the so-called Balkan Route, many people on the move have become stranded at borders within this region. One of the consequences of these EU migration policies has been violent pushbacks of migrants from one state to another. The situation at the border of interest is analyzed through three interconnected dimensions: Racism, Balkanism, and Nesting Orientalism. On a global level, it reflects the division between the Global North and the Global South; within Europe, it marks the hierarchy between the EU and Southeast Europe; and within the region, it represents the border between EU member state Croatia and EU candidate country Bosnia and Herzegovina. Drawing on semi-structured expert interviews with activists, journalists, researchers, and humanitarian workers dealing with this border, the research explores how racialized border practices produce and reinforce hierarchies of belonging and exclusion. It traces how migrants from the Global South are constructed as threats, rendered invisible, and subjected to routinized violence and denial of rights. By applying an integrated lens of Racism, Balkanism, and Nesting Orientalism, the thesis analyzes the consequences of this violence for both migrants and local communities after 2015. Ultimately, it contributes to a deeper understanding of the racialized dimensions of EU migration policies and the reproduction of global power asymmetries at an external EU border.vorgelegt von Vanja Tadic´Masterarbeit Universität Graz 2025Zusammenfassung auf Englisc
Supercritical CO2-assisted processes for development of added-value materials: Optimization of starch aerogels preparation and hemp seed extracts impregnation
No full textThe aim of the present study was the utilization of supercritical CO2 as a green medium in various processes: starch gel drying, supercritical extraction from hemp seed flour (SCE process), hemp seed oil (HSO) impregnation (SCI process), as well as integrated process of hemp seed flour (HSF) extraction and starch gels impregnation (SCE-SCI process) for development of added-value materials that can be used as phytopharmaceuticals. Optimization of starch aerogels was performed by variation of temperature (35 and 45 °C) and pressure (8, 10, and 20 MPa) in order to obtain materials with high porosity, which will enable maximal loading capacity for hemp seed extracts. Proposed scCO2-assisted processes of SCE from HSF, SCI and SCE-SCI were performed at pressure of 30 MPa and temperature of 60 °C. It was shown that conditions of starch gel drying significantly influenced material morphology (porosity was in a range of 48-82%, and specific surface area of 71-208 m2/g), which consequently determined aerogel loading capacity. FTIR analysis confirmed that scCO2 did not have effect on polymer composition nor it remained in polymer after drying process. The highest loading of both HSO and HSF extract (24.9% and 29.78%, respectively) was achieved when aerogel obtained at 10 MPa and 45 °C was tested as a carrier. Furthermore, chemical analysis showed that both HSO and HSF extract are rich in unsaturated fatty acids especially linoleic acid (54-59%) and α-linolenic acid (15-18%). These essential fatty acids have well-established health benefits including protection against cardiovascular, neurodegenerative and inflammatory diseases
Antioxidant and Physicochemical Properties of Hydrogen Peroxide-Treated Sugar Beet Dietary Fibre
No full textSideritis romana L. subsp. purpurea (Tal. ex Benth.) Heywood, a new chemotype from Montenegro
No full textA study on essential oil fractions of the Western Balkan endemic Sideritis romana L. subsp. purpurea (Tal. ex Benth.) Heywood collected in Montenegro is reported. The 24-h systematic steam distillation extraction procedure was performed. The gas chromatographic/mass spectrometric (GC/MS) analysis of the fractions showed γ-elemene and spathulenol as two main constituents, revealing a new chemotype of this plant species. Although varying in the content of these two main compounds, which makes the fractions quite different between each other, evaluation of the anti-Candida activity showed the lack of any significant efficacy
Complex scale-free networks with tunable power-law exponent and clustering
No full textThis article is made available through the Brunel Open Access Publishing Fund. It is distributed under a Creative Commons License (http://creativecommons.org/licenses/by/3.0/). Copyright @ 2013 Elsevier B.V.We introduce a network evolution process motivated by the network of citations in the scientific literature. In each iteration of the process a node is born and directed links are created from the new node to a set of target nodes already in the network. This set includes mm “ambassador” nodes and ll of each ambassador’s descendants where mm and ll are random variables selected from any choice of distributions plpl and qmqm. The process mimics the tendency of authors to cite varying numbers of papers included in the bibliographies of the other papers they cite. We show that the degree distributions of the networks generated after a large number of iterations are scale-free and derive an expression for the power-law exponent. In a particular case of the model where the number of ambassadors is always the constant mm and the number of selected descendants from each ambassador is the constant ll, the power-law exponent is (2l+1)/l(2l+1)/l. For this example we derive expressions for the degree distribution and clustering coefficient in terms of ll and mm. We conclude that the proposed model can be tuned to have the same power law exponent and clustering coefficient of a broad range of the scale-free distributions that have been studied empirically.EPSR
Utilization of supercritical CO2 in bioactive principles isolation from Helichrysum italicum and their adsorption on selected fabrics
No full textHelichrysum italicum (Roth) G. Don fil., Asteraceae, possesses numerous secondary plant metabolites with a wide range of biological activities. Yet, data on the potential of supercritical fluid extraction (SFE) in their isolation are scarce. This study provides analyses of the chemical profiles of extracts obtained by SFE with or without ethanol as a cosolvent using GC-FID, GC-MS, HPLC, and UHPLC-MS techniques. Among the compounds with proven biological activity identified, the presence of arzanol was confirmed. In the next step, the integrated process of supercritical fluid extraction and impregnation was applied to deliver active compounds to cotton gauze and polypropylene fabric for possible topical applications. The analytical procedures results showed a considerable affinity of both textile materials for incorporating active components present in the H. italicum. The study indicated the high-pressure techniques applied as very efficient in the isolation of bioactive components from H. italicum and their adsorption on selected carriers
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