D’après la Convention n° 182 de l’OIT, toutes les formes d’esclavage ou pratiques analogues, telles que la servitude pour dettes et le servage, la traite, le travail forcé, ainsi que le recrutement obligatoire des enfants dans les conflits armés figurent parmi les pires formes de travail des enfants. Ledit instrument regroupe l’ensemble de ces notions dans une seule et même catégorie pouvant donner lieu à une possible ambiguïté. Le but de ce travail est de faire toute la lumière sur les nuances qui distinguent chacune de ces notions en droit international, européen (en particulier, le droit du Conseil de l’Europe) et iranien. Cette thèse se compose de deux parties. La première partie traite de l’évolution du cadre juridique international, européen et iranien dans la lutte contre le travail des enfants dans son ensemble. La deuxième partie, quant à elle, se penche sur les formes particulièrement graves de travail des enfants, d’ordre économique, qui nécessitent de ce fait un régime juridique spécifique. / Child Labour and Child Exploitation in International, European and Iranian law (a Comparative Legal Study): According to the ILO’s Convention No. 182, all forms of slavery or similar practices, such as debt bondage and serfdom, trafficking, forced labour and compulsory recruitment of children for use in armed conflicts appear among the worst forms of child labour. The aforementioned Convention classifies all these concepts into a singlecategory which may give rise to a possible ambiguity. The aim of this thesis is to shed light on the nuances of each of these notions in international, European (in particular, Council of Europe) and Iranian law. This thesis consists of two parts. The first part deals with theevolution of the international, European and Iranian Legal framework in the fight against child labour in general. The second part particularly focuses on grave forms of child labour of economic nature which require a specific legal regime.

About one third of all edible food is wasted globally each year. This calls for improvements in resource and waste management. An interesting solution for organic waste is fly larvae composting, which both produces protein in the form of larvae and a nutrient rich residue. The larvae can be used as animal feed while the residue can be applied as an organic fertilizer, thus recycling the nutrients. Fly larvae composting with the black soldier fly (BSF), Hermetia illucens, is relatively new, but there is extensive research on how the treatment is affected by different parameters, e.g. temperature, moisture and type of organic waste that is treated. The role of bacteria has only been the topic of a few studies in recent years but has shown promising positive effects on larval growth. This study investigated the impact of bacteria isolated from BSF eggs on fly larvae composting of food waste by BSF larvae. The study was done in two experimental phases. In phase I, groups of three bacteria were added to each treatment together with the larvae and only single treatments were executed; in phase II triplicates of promising groups of three, two or single bacteria were evaluated. The results of phase I suggested that selected groupings of bacteria could either decrease or increase the bioconversion ratio and in general decrease the reduction ratio of the food waste, while the survival ratio did not seem to be impacted. However, in phase II no significant difference (p<0.05) between the treatments with bacteria and the control were found for any evaluated variables. Interestingly, the variation in resulting bioconversion ratio and reduction ratio (on a VS basis) was found to be reduced when one or more bacteria were present. The coefficient of variation in bioconversion ratio was 9.5% for the control compared to between 2.5% and 6.1% for treatments with bacteria. For the reduction ratio the variation was reduced from 5.6% and to between 0.9% and 4.6% for the bacteria treatments. Hence, seeding with bacteria may improve stability of the process, which is especially interesting when scaling up the process. / Globalt slängs ungefär en tredjedel av all ätbar mat. Därmed finns ett stort behov av säker och hållbar avfallshantering. En intressant lösning för organiskt avfall är fluglarvskompostering, som både producerar protein i form av larver och en näringsrik behandlingsrest. Larverna kan exempelvis användas som djurfoder medan behandlings-resten kan användas som gödselmedel, vilket innebär att näring kan återvinnas. Fluglarvskompostering med amerikansk vapenfluga (BSF), Hermetia illucens, är en relativt ny teknik men det finns redan omfattande forskning på hur olika processparametrar, t.ex. temperatur och vattenhalt, påverkar processen. Bakteriers roll har studerats endast i ett fåtal studier men de indikerar att tillsats av bakterier kan ha en positiv inverkan på larvernas tillväxt. Den här studien har därför undersökt hur tillsats av bakterier isolerade från BSF ägg påverkar fluglarvskompostering av matavfall med BSF larver. Studien gjordes i två experimentella delar. I fas I undersöktes effekten av tillsats av bakteriegrupper om tre bakterier till matavfallet samtidigt med larverna; i fas II utfördes triplikat av lovande bakteriegrupper med tre, två eller enstaka bakterier. Resultaten från fas I indikerade att olika bakteriegrupper antingen kunde höja eller sänka bioomvandlingskvoten och generellt gav en minskning i materialreduktions-kvoten medan överlevnadsgraden inte verkade påverkas i samma utsträckning. I fas II observerades däremot ingen signifikant skillnad (p<0,05) mellan någon av bakteriebehandlingarna och kontrollen för samtliga processvariabler. Variationen i resulterande bioomvandlingskvot och materialreduktionskvot (på VS basis) var dock lägre för bakteriebehandlingarna jämfört med kontrollen. Variationen i bioomvandlings-kvot var 9,5% för kontrollen jämfört med 2,5-6,1% för bakteriebehandlingarna. För materialreduktionskvoten minskade variationen från 5,6% till mellan 0,9% och 4,6%. Detta tyder på att tillsats av bakterier kan förbättra stabiliteten hos fluglarvskompostering, vilket är särskilt intressant vid uppskalning av processen.

<p>This study examines how the Roman emperors <i>c</i>. AD. 260–295 attempt at maintaining their power-bases through legitimation of their claims to power, with reference to various potentially powerful groups of society, such as the military, the inhabitants of the provinces and the senate in Rome. The purpose has been to discern the development of ‘Roman imperial ideology’ in an age which has frequently been referred to as an ‘age of military anarchy.’ Focus is on how claims to power could be expressed through visual media. Of such media, mainly the coins struck for the emperors <i>c</i>. AD 260-295 have been studied. A close investigation has been made of the iconography of these coins. Furthermore, the ways in which coin-images are modified and combined with various legends are studied. An additional purpose of this investigation has been to provide a comment on the general potential of conveying visual imagery and messages on objects such as coins and medallions. </p><p>The study argues that novel, intricate and multi-layered images were created on the coins struck for the emperors <i>c</i>. AD 260-295. Furthermore, it is suggested that these coin-images were created to assume the function of larger-scale expressions of imperial authority, such as triumphal arches and imperial statues. This adaption of coinage was made because there was a need for intensified communication of imperial authority. This need arose due to the incessant warfare of the age, and a process of regionalization of the empire, which was connected to this warfare. The conclusion is that these coins provide an illustration of the development of the Roman empire in the second half of the third century. This was a development by which the city of Rome lost its importance in favour of regional capitals, and ultimately in favour of Constantinople.</p>

This study examines how the Roman emperors c. AD. 260–295 attempt at maintaining their power-bases through legitimation of their claims to power, with reference to various potentially powerful groups of society, such as the military, the inhabitants of the provinces and the senate in Rome. The purpose has been to discern the development of ‘Roman imperial ideology’ in an age which has frequently been referred to as an ‘age of military anarchy.’ Focus is on how claims to power could be expressed through visual media. Of such media, mainly the coins struck for the emperors c. AD 260-295 have been studied. A close investigation has been made of the iconography of these coins. Furthermore, the ways in which coin-images are modified and combined with various legends are studied. An additional purpose of this investigation has been to provide a comment on the general potential of conveying visual imagery and messages on objects such as coins and medallions. The study argues that novel, intricate and multi-layered images were created on the coins struck for the emperors c. AD 260-295. Furthermore, it is suggested that these coin-images were created to assume the function of larger-scale expressions of imperial authority, such as triumphal arches and imperial statues. This adaption of coinage was made because there was a need for intensified communication of imperial authority. This need arose due to the incessant warfare of the age, and a process of regionalization of the empire, which was connected to this warfare. The conclusion is that these coins provide an illustration of the development of the Roman empire in the second half of the third century. This was a development by which the city of Rome lost its importance in favour of regional capitals, and ultimately in favour of Constantinople.

This thesis examines the experiences of girl child soldiers in Uganda in order to explore the gender gaps that exist in post-conflict programming and to engender meaningful policy solutions that target these gaps. This thesis uses a gender lens to analyze the challenges faced by Ugandan girls and to explore how entrenched gender norms feed into a singular narrative of conflict &ndash; dangerous boys and traumatized girls &ndash; that renders particular combatants &ndash; and their unique needs &ndash; invisible. Adopting a feminist methodology that prioritizes the importance of girls&rsquo; narratives and self-perceptions, the author argues that girl child soldiers must be meaningfully included in the design and implementation of programming aimed at serving their needs. A participatory action research methodology is presented as a promising way forward. It can help address specific gendered challenges in the post-conflict environment, while also recognizing and drawing upon the resiliency and strengths of the girl child soldiers themselves.

This thesis examines the experiences of girl child soldiers in Uganda in order to explore the gender gaps that exist in post-conflict programming and to engender meaningful policy solutions that target these gaps. This thesis uses a gender lens to analyze the challenges faced by Ugandan girls and to explore how entrenched gender norms feed into a singular narrative of conflict &ndash; dangerous boys and traumatized girls &ndash; that renders particular combatants &ndash; and their unique needs &ndash; invisible. Adopting a feminist methodology that prioritizes the importance of girls&rsquo; narratives and self-perceptions, the author argues that girl child soldiers must be meaningfully included in the design and implementation of programming aimed at serving their needs. A participatory action research methodology is presented as a promising way forward. It can help address specific gendered challenges in the post-conflict environment, while also recognizing and drawing upon the resiliency and strengths of the girl child soldiers themselves.

Vibratory gyroscopes have gained immense popularity in the microsystem technology because of their suitability to planar fabrication techniques. With considerable effort in design and fabrication, MEMS (Micro-electro-mechanical-system) vibratory gyroscopes have started pervading consumer electronics apart from their well known applications in aerospace and defence systems. Vibratory gyroscopes operate on the Coriolis principle for sensing rates of rotation of the r tating body. They typically employ capacitive or piezoresistive sensing for detecting the Coriolis force induced motion which is, in turn, used to determine the impressed rate of rotation. Interestingly, Nature also uses vibratory gyroscopes in its designs. Over several years, it has evolved an incredibly elegant design for vibratory gyroscopes in the form of dipteran halteres. Dipterans are known to receive mechanosensory feedback on their aerial rotations from halteres for their flight navigation. Insect biologists have also studied this sensor and continue to be fascinated by the intricate mechanism employed to sense the rate of rotation. In most Diptera, including the soldier fly, Hermetia illucens, the halteres are simple cantilever like structures with an end mass that probably evolved from the hind wings of the ancestral four-winged insect form. The halteres along with their connecting joint with the fly’s body constitute a mechanism that is used for muscle-actuated oscillations of the halteres along the actuation direction. These oscillations occur in the actuation plane such that any rotation of the insect body, induces Coriolis force on the halteres causing their plane of vibration to shift laterally by a small degree. This induced deflection along the sensing plane (out of the haltere’s actuation plane) results in strain variation at the base of the haltere shaft, which is sensed by the campaniform sensilla. The goal of the current study is to understand the strain sensing mechanism of the haltere, the nature of boundary attachments of the haltere with the fly’s body, the reasons of asymmetrical geometry of the haltere, and the interaction between both wings and the contralateral wing and haltere. In order to understand the haltere’s strain sensing mechanism, we estimate the strain pattern at the haltere base induced due to rotations about the body’s pitch, roll, and yaw axes. We model the haltere as a cantilever structure (cylindrical stalk with a spherical end knob) with experimentally determined material properties from nanoindentation and carry out analytical and numerical (finite element) analysis to estimate strains in the haltere due to Coriolis forces and inertia forces resulting from various body rotations. From the strain pattern, we establish a correlation between the location of maximum strain and the position of the campaniform sensilla and propose strain sensing mechanisms. The haltere is connected to the meta thoracic region of the fly’s body by a complicated hinge mechanism that actuates the haltere into angular oscillations with a large amplitude of 170 ◦ in the actuation plane and very small oscillation in the sensing plane. We aim to understand the reason behind the dissimilar boundary attachments along the two directions. We carry out bending experiments using micro Newton force sensor and estimate the stiffness along the actuation and sensing directions. We observe that the haltere behaves as a rigid body in the actuation direction and a flexible body in the sensing direction. We find the haltere to be a resonating structure with two different kinds of boundary attachments in the actuation and sensing directions. We create a finite element model of the haltere joint based on the optical and scanning microscope images, approximate material properties, and stiffness properties obtained from the bending experiments. We subsequently validate the model with experimental results. The haltere geometry has asymmetry along the length and the cross-section. This specific design of the haltere is in contrast to the the existing MEMS vibratory gyroscope, where the elastic beams supporting the proof mass are typically designed with symmetric cross-sections so that there is a mode matching between the actuation and the sensing vibrations. The mode matching provides high sensitivity and low bandwidth. Hence, we are interested in understanding the mechanical significance of the haltere’s asymmetry. First, we estimate the location of the maximum stress by using the actual geometry of the haltere. Next, by using the stiffness determined from bending experiments and mass properties from the geometric model, we find the natural frequencies along both actuation and sensing directions. We compare these findings with existing MEMS vibratory gyroscopes. The dipteran halteres always vibrate at the wing beat frequency. Each wing maintains 180 ◦ phase difference with its contralateral haltere and the opposite wing. Both wings and the contralateral wing-haltere mechanism exhibit coupled oscillatory motion through passive linkages. These linkages modulate the frequency and maintain the out- of-phase relationship. We explore the dynamics behind the out-of-phase behaviour and the frequency modulation of the wing-wing and wing-haltere coupled oscillatory motion. We observe that the linear coupled oscillatory model can explain the out-of-phase relationship between the two wings. However, a nonlinear coupled oscillator model is required to explain both frequency synchronization and frequency modulation of the wing with the haltere. We also carry out a finite element analysis of the wing-haltere mechanism and show that the out-of-phase motion between the wing and the haltere is due to the passive mechanical linkage of finite strength and high actuation force. The results of this study reveal the mechanics of the haltere as a rate sensing gyroscope and show the basis of the Nature’s design of this elegant sensor. This study brings out two specific features— the large amplitude actuated oscillations and the asymmetric geometry of the haltere structure— that are not found in current vibratory gyroscope designs. We hope that our findings inspire new designs of MEMS gyroscopes that have elegance and simplicity of the haltere along with the desired performance.

Behovet av bättre avfallshantering ökar ständigt då befolkningen ökar och jordbruket intensifieras. Avfallshanteringen idag är dåligt konstruerad för organiskt avfall i många länder då det hamnar på deponier som släpper ut växthusgaser till atmosfären vilket påverkar klimatet negativt. En möjlig lösning att implementera en metod som genererar en värdefull produkt så som fluglarvskompostering. Det är en organisk avfallsbehandlingsmetod som använder larver av den amerikanska vapenflugan som kan reducera mängden avfall. Avfallet omvandlas till larvernas biomassa som är proteinrik och kan användas som djurfoder. Behandlingsresterna kan användas som gödningsmedel eller producera biogas. Väldigt lite är känt gällande växthusgasutsläppen från fluglarvskompostering. Under nuvarande EU lagstiftning i produktionssammanhang så är flugan ett produktionsdjur, som inte tillåts att födas upp på matavfall innehållande animaliska biprodukter. Därför har vegetabiliskt matavfall undersökts i denna studie för att i produktionssammanhang kunna använda sig av fluglarvskompostering. De vegetabiliska avfallet som använts var apelsinskal och blomkål blandat med broccoli (i denna studie kallad blomkålsblandning). Vegetabiliskt avfall innehåller svåråtkomlig näring för larverna och för att de ska kunna tillgodose sig så mycket som möjligt gjordes förbehandlingar. Förbehandlingarna som utfördes var med svamp och med ammoniumlösning då dessa har visat sig spjälka upp svåråtkomlig näring. Matavfall är känt för att fungera bra i fluglarvskompostering och användes som referens. Utsläpp av växthusgaserna CO2, NH3, N2O och CH4 undersöktes genom användande av kammarteknik. Vid behandlingar av blomkålsblandningen förbättrade förbehandlingarna materialreduktionen endast lite, vilket var i genomsnitt 82 %, men den totala minskningen i detta substrat var större än för matavfall vars reduktion var 60 %. Reduktionen varierade mellan 38-86 % i behandlingarna av apelsinskal. Larvbehandlingen av matavfall resulterade i den högsta omvandlingskvoten. Båda vegetabiliska substraten förbehandlat med NH4+ hade höga utsläpp av NH3. Behandlingarna av blomkålsblandningen hade högre utsläpp av N2O men mindre än i konventionella avfallsbehandlingar som kompostering. De substrat som inte förbehandlats hade låga utsläpp av CH4, inklusive matavfallet jämfört med de förbehandlade substraten som var mindre än i aerobisk kompostering. När en behandlingsstrategi väljs för kompostering med fluglarver, för små gasutsläpp så bör svampförbehandlat substrat användas, medan substrat förbehandlat med NH4+ resulterar i högre materialreduktion. / The need for better waste management is increasing as the population increases and agriculture is intensified. Organic waste management today is poorly designed in many countries leading to waste ending up in landfills which results in more greenhouse gases being emitted to the atmosphere, contributing to the global climate change. A possible solution is to implement a method that generates a valuable product such as fly larvae composting, which is an organic waste treatment method that uses larvae of the black soldier fly that can reduce the amount of waste. The waste is converted to the larval biomass which is rich in protein and possible to use as animal feed. Treatment residues can be used as fertilizers or to produce biogas. Very little is known about greenhouse gas emissions from fly larvae composting. Under current EU legislation in production contexts, the fly is considered a production animal that is not allowed to be raised on food waste containing animal by-products. Therefore, in this study, vegetable waste was investigated in order to be able to use fly larvae composting in production contexts. The vegetable waste used was orange peels and cauliflower mixed with broccoli (in this study referred to as cauliflower mix). Vegetable waste contains nutrients which are hard to digest for larvae and in order to improve digestibility, pretreatments were performed. The pretreatments carried out were with fungus and ammonia solution, as these have been shown to make hardly bound nutrients available. Food waste is known to work well in fly larvae composting and was used as a reference. Emissions of greenhouse gases CO2, NH3, N2O and CH4 were measured using chamber technique. In the treatment of cauliflower mix, the pretreatment improved the material reduction only slightly, which was on average 82 % but the overall total reduction was greater than that for food waste which had a reduction at 60 %. The reduction ranged between 38-86 % among all of the treatments of orange peels. Larvae treatment on food waste resulted in the largest biomass conversion ratio. Both vegetable substrates pretreated with NH4+ had high emissions of NH3. The treatments of cauliflower mix had higher emissions of N2O but they were lower than what is generally expected in conventional waste treatments such as composting. The non-pretreated substrates had low emissions of CH4, including the food waste compared to the pretreated ones which nevertheless were lower than in aerobic composting. When selecting a treatment strategy for fly larvae composting, to achieve low gas emissions, fungus pretreated substrates should be used while substrates pretreated with NH4+ result in higher material reduction.

The first opera by Bohuslav Martinů (from the total of 16) named Voják a tanečnice (The Soldier and the Dancer), H. 162 was created in the initial years of Martinů's stay in Paris (1926-1927), when the effort to reflect different contemporary music trends and influences can be traced in his compositions. Voják a tanečnice is an original example of absorbing such influences on the background of the three-act comic opera. Together with the librettist, Jan Löwenbach, they tried to create a "new opera buffa", which was however not understood by the contemporary reviewers. The opera was first performed in Brno in 1928. The frequency of the first performances of Martinů's stage works in the National Theatre in Brno indicates that the first performance of his first opera was not a coincidence but a part of targeted dramaturgy at the Brno stage. The opera follows both the tradition of an opera and tendencies in art of the 1920's, e. g. playing with humour in music, the epic theatre inspirations or using ancient theme. Powered by TCPDF (www.tcpdf.org)

The aim of the present diploma thesis is to widen knowledge of the chemical regulation of weeds in row crops. To establish the effectiveness of herbicides, we set up a small lot at a carefully chosen spot in the potato-growing region near Strakonice. We conducted a comparison of the effects of three herbicide combinations on two potato varieties (Red Anna, Laura). Two combinations proved pre-emergent (Afalon 45 SC+Command 36 SC; Sencor 70 WG+Command 36 SC), one post-emergent (Titus 25 WG). Subsequently, we evaluated economic costs on weeds regulation and suggested preliminary measures to be taken.