Academic literature on the topic 'QLS cycle'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'QLS cycle.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "QLS cycle"

1

Ablal, MA, FD Jarad, and AA Adeyemi. "The Erosion Properties of Chlorine Dioxide and Hydrogen Peroxide on Bovine Teeth." International Journal of Dentistry and Oral Science (IJDOS) 2, no. 2 (2015): 42–46. https://doi.org/10.19070/2377- 8075-1500010.

Full text
Abstract:
Objectives: The aim of this study was to assess the erosion potential of chlorine dioxide and hydrogen peroxide on bovine teeth. Methods: Sixty bovine crowns were ground and polished to give flat surfaces. The crowns were subjected to heavy staining cycles then equally divided into 3 treatment groups; chlorine dioxide (ClO2), hydrogen peroxide (H2O2), and deionised water (H2O). Specimens in each group were immersed in 150 ml of the treatment for seven 2 min cycle in addition to an extra 30 min cycle. Specimens were gently dried after each 2 min cycle to take quantitative light-induced fluorescence (QLF) images while non- contact light profilometry (NCLP) scans were performed at the end of the seven 2 min and the extra 30 min cycles. Results: ClO2 specimens showed a significant increase in %ΔF only after the first 2 min cycle (p < 0.05); however, a significant increase in %ΔF within H2O2 specimens was found at the end of the seven recommended treatment cycles (p < 0.05). Conclusion: Chlorine dioxide does cause enamel erosion but to a lesser extent than that caused by hydrogen peroxide.
APA, Harvard, Vancouver, ISO, and other styles
2

Ngoi, Kok Kwong, and Hieng Kiat Jun. "Study of fabrication of fully aqueous solution processed SnS quantum dot-sensitized solar cell." Green Processing and Synthesis 8, no. 1 (2019): 443–50. http://dx.doi.org/10.1515/gps-2019-0012.

Full text
Abstract:
Abstract In this prelimnary work, the aim was to fabricate a simple tin (II) sulfide (SnS) quantum dot-sensitized solar cell (QDSSC) from aqueous solution. The SnS QDSSCs were characterized by using current-voltage test (I-V test), scanning electron microscopy (SEM), and ultraviolet-visible (UV-Vis) spectroscopy. SEM results showed the presence of TiO2 and SnS elements in the sample, confirming the successful synthesis of SnS quantum dots (QDs). The overall efficiency of QDSSCs increased when concentration of the precursor solutions, which were aqueous sodium sulfide and tin (II) sulfate decreased from 0.5 M to 0.05 M. On the other hand, for a fixed precursor concentration, the efficiency of QDSSC reduced once an optimal cycle of of successive ionic layer adsorption and reaction (SILAR) was achieved. The bandgap energies of QDs obtained by extrapolating the Tauc plot were used to predict the QDs size. In general, the QD size was bigger for samples prepared from precursor concentration of 0.5 M, and with higher number of SILAR cycle used. The best performance was obtained from sample prepared from 0.05 M precursor concentration with 4 SILAR cycles.
APA, Harvard, Vancouver, ISO, and other styles
3

Nasution, Yunidar Hayani, Nurhabibi, and Arifah. "Improving Student Learning Outcomes by Using Cooperative Learning Model on Q.S. Al-Hujurat Verse 13 Material in Elementary Schools." DARUSSALAM: Scientific Journal of Islamic Education 1, no. 1 (2024): 34–42. https://doi.org/10.62945/darussalam.v1i1.212.

Full text
Abstract:
This study aims to improve student learning outcomes in Islamic education learning using the cooperative learning model. This study uses a type of classroom action research. The design of this study uses the Kemmis & Mctaggart design with four steps, namely planning, action, observation and reflection. The subjects of this study were elementary school students. Data were obtained using test and observation techniques. The data obtained were then analyzed using descriptive statistical techniques. The results of the study indicate that the cooperative learning model can improve student learning outcomes in Islamic education learning. This can be seen in cycle I with an average percentage of 50% and in cycle II by 86%. So it can be stated that student learning outcomes have developed in cycle II. Improving student learning outcomes through the application of the cooperative learning model on the material of Q.S. Al-Hujurat Verse 13 was carried out for two cycles. Learning outcomes in cycle I were 66.67% and in cycle II by 76.67%. So it can be said that student learning outcomes improved better in cycle II. Based on this, the cooperative learning model can be used as one of the media that can be considered by teachers to overcome the problem of low student learning outcomes in Islamic religious education learning.
APA, Harvard, Vancouver, ISO, and other styles
4

Nurlaili, Laila Khairani, and Nurlatifah. "Improving Reading Ability of Q.S. An-Nasr with Demonstration Method and Problem Based Learning Model in Elementary School Students." DARUSSALAM: Scientific Journal of Islamic Education 1, no. 1 (2024): 22–33. https://doi.org/10.62945/darussalam.v1i1.211.

Full text
Abstract:
This study aims to improve students' reading ability in the letter An-Nasr by using the demonstration method and problem-based learning model. This study uses a type of classroom action research. The design of this study uses the Kemmis & Mctaggart design with four steps, namely planning, action, observation and reflection. The subjects of this study were elementary school students. Data were obtained using test and observation techniques. The data obtained were then analyzed using descriptive statistical techniques. The results of the study indicate that the demonstration method and problem-based learning model can improve students' reading ability in the letter An-Nasr in Islamic religious education learning. This can be seen in cycle I with an average percentage of 50% and in cycle II of 86%. So it can be stated that students' reading ability developed in cycle II. Improving students' reading ability through the application of the demonstration method and problem-based learning model on the material of the letter An-Nasr was carried out for two cycles. Learning outcomes in cycle I were 66.67% and in cycle II of 76.67%. So it can be stated that students' reading ability improved better in cycle II. Based on this, the demonstration method and problem-based learning model can be used as one of the media that can be considered by teachers to overcome the problem of low ability to read the Al-Quran in Islamic religious education learning.
APA, Harvard, Vancouver, ISO, and other styles
5

Chen, Ningning, Wei Zhou, Minzhe Chen, et al. "In Situ Phase Separation Strategy to Construct Zinc Oxide Dots-Modified Vanadium Nitride Flower-like Heterojunctions as an Efficient Sulfur Nanoreactor for Lithium-Sulfur Batteries." Materials 18, no. 11 (2025): 2639. https://doi.org/10.3390/ma18112639.

Full text
Abstract:
Exploring advanced sulfur cathode materials is important for the development of lithium-sulfur batteries (LSBs), but they still present challenges. Herein, zinc oxide dots-modified vanadium nitride flower-like heterojunctions (Zn-QDs-VN) as sulfur hosts are prepared by a phase separation strategy. Characterizations confirm that the flower structure with high specific surface area and pores improves active site exposure and electron/mass transfer. In situ phase separation enriches the Zn-QDs-VN interface, addressing the issues of uneven distribution and interface reduction of Zn-QDs-VN. Further theoretical computations reveal that ZnO-QDs-VN with optimized intermediate spin states can constitute a stable LiS* bond sequence, which can conspicuously facilitate the adsorption and conversion of LiPSs and reduce the battery reaction energy barrier. Therefore, the ZnO-QDs-VN@S cathode shows a high initial specific capacity of 1109.6 mAh g−1 at 1.0 C and long cycle stability (maintaining 984.2 mAh g−1 after 500 cycles). Under high S loading (8.5 mg cm−2) and lean electrolyte conditions (E/S = 6.5 μL mg−1), it also exhibits a high initial area capacity (10.26 mAh cm−2) at 0.2 C. The interfacial synergistic effect accelerates the adsorption and conversion of LiPSs and reduces the energy barriers in cell reactions. The study provides a new method for designing heterojunctions to achieve high-performance LSBs.
APA, Harvard, Vancouver, ISO, and other styles
6

Szwech, Julia, Gabriela Blecharz, Natalia Jańczyk, et al. "The Effects of Hormonal Contraception on Physical Performance and Health of Female Athletes: A Systematic Review." Quality in Sport 40 (April 3, 2025): 59410. https://doi.org/10.12775/qs.2025.40.59410.

Full text
Abstract:
Introduction Physical performance and health of female athletes are influenced by physiological changes from the menstrual cycle and hormonal contraception (HC). Hormonal fluctuations can affect muscle strength, endurance, regeneration, and psychological well-being, impacting sports results. HC prevents pregnancy, regulates menstrual cycles and alleviates premenstrual syndrome symptoms. However, it can also cause side effects such as nausea, headaches, weight gain, and mood swings. Aim of the study The aim of the study was to analyze the effects of hormonal contraception on the physical performance and health of female athletes. Materials and methodsThe article was created based on the PubMed and Cochrane databases. The literature was analyzed using following keywords: hormonal contraception, menstrual cycle, athletes, sex hormones, physical performance Results HC stabilizes hormone levels, potentially reducing performance fluctuations associated with the menstrual cycle. Some studies indicate a slight reduction in aerobic capacity and muscle strength in women using HC, compared to those with a natural cycle. In addition, HC has a positive effect on regeneration after intense training and reducing the risk of overtraining. Athletes reported better sleep quality and fewer cycle-related symptoms, allowing them to train more regularly. What is more, some research highlights estrogen’s anti-inflammatory effect, which supports muscle repair. Conclusion The use of HC use appears to have a minor impact on physical performance, especially among team athletes. However, subjective benefits may improve training comfort. Further research is needed to explore HC’s effects across various sports disciplines.
APA, Harvard, Vancouver, ISO, and other styles
7

Jigyasu, Aditya Kumar, Sahabjada Siddiqui, Asif Jafri, Md Arshad, Mohatashim Lohani, and Irfan Ali Khan. "Biological Synthesis of CdTe Quantum Dots and Their Anti-Proliferative Assessment Against Prostate Cancer Cell Line." Journal of Nanoscience and Nanotechnology 20, no. 6 (2020): 3398–403. http://dx.doi.org/10.1166/jnn.2020.17316.

Full text
Abstract:
Quantum dots (QDs) are semiconducting materials which have a wide array of applications starting from semiconducting devices, in humidity and pressure sensors and in medical imaging including cancer therapy. In the present study, cadmium telluride (CdTe) QDs were synthesized by a biological method using yeast cells, Saccharomyces cerevisiae in modified Czapek’s medium. QDs were characterized by transmission electron microscopy and X-ray diffraction. Cancer cells were treated with 2, 4, 8 and 16 μM concentrations of CdTe QDs for 24 h. The anti-proliferative activity was determined by using MTT assay, by evaluating the production of reactive oxygen species (ROS), and also by nuclear apoptosis and cell cycle analysis using a flow cytometer against human prostate carcinoma cell line PC-3. The size of the CdTe QDs was approximately 2 nm. In vitro anti-proliferative study showed that CdTe QDs induced cell death and nuclear apoptosis in a dosedependent manner. CdTe QDs induced significant increase in ROS level in PC-3 cells which was dose-dependent. Moreover, CdTe also arrested growth of PC-3 cells in the G2/M phase of the cell cycle. This study elucidates the apoptotic activity of CdTe QDs on prostate carcinoma which could provide useful insights to researchers for its clinical application.
APA, Harvard, Vancouver, ISO, and other styles
8

Brahma, Sanjaya, Cheung-Yi Wang, Yi-Hsuan Huang, Wen-Feng Lin, and Jow-Lay Huang. "One-Pot Bottom-Up Synthesis of SiO2 Quantum Dots and Reduced Graphene Oxide (rGO) Nanocomposite as Anode Materials in Lithium-Ion Batteries." C 11, no. 1 (2025): 23. https://doi.org/10.3390/c11010023.

Full text
Abstract:
Here, crystalline SiO2 quantum dots (QDs) of 3–5 nm size were grown within the layers of reduced graphene oxide (rGO) by a solution mode chemical growth process at a relatively low temperature (100 °C). The composite was applied as a negative electrode in a Li-ion half-cell battery and the electrochemical investigation confirmed a distinct first-cycle discharge/charge capacity (~865 mAhg−1/387 @ 51 mAg−1). The battery could retain a capacity of 296 mAhg−1 after 60 charge/discharge cycles with 99% coulombic efficiency. Furthermore, at a high current rate of 1.02 Ag−1, the battery was able to display an apparent rate capability (214.47 mAhg−1), indicating the high chemical and mechanical stability of the composite at a high current rate. A structural analysis revealed clear distinct diffraction peaks of SiO2 and high-resolution transmission electron microscopy images showed discrete atomic planes, thereby confirming the growth of crystalline SiO2 QDs within the layers of rGO.
APA, Harvard, Vancouver, ISO, and other styles
9

POST, Paul. "Life Cycle Rituals." Questions Liturgiques/Studies in Liturgy 83, no. 1 (2002): 10–29. http://dx.doi.org/10.2143/ql.83.1.565697.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Jeon, Eun-Young, and Su-Young Lee. "Remineralization effect according to application cycle of fluoride varnish: QLF-D analysis." Journal of Korean society of Dental Hygiene 16, no. 4 (2016): 525–30. http://dx.doi.org/10.13065/jksdh.2016.16.04.525.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "QLS cycle"

1

Dammak, Marwa. "Application du codage réseau aux plate-formes des jeux en ligne." Thesis, Cergy-Pontoise, 2018. http://www.theses.fr/2018CERG0961/document.

Full text
Abstract:
L’application de jeu en ligne massivement multijoueurs fournit une grandepartie du trafic Internet global. Le trafic est généralement composé d’unepetite partie de données utiles encapsulé dans des segments TCP, entrainantun volume élevé d’entêtes transmis via le réseau. Cela implique: 1) la tailledes paquets est trop petite pour un routage efficace et; 2) la bande passanterequise par le serveur augmente. Par conséquent, il est nécessaire de trouverdes techniques de transmission et de routage plus efficaces afin de réduire levolume de trafic et augmenter l’efficacité du réseau permettant de prendre encharge le nombre croissant des joueurs. D’autre part, la qualité d’expérience(QoE) dans le contexte des jeux en ligne est fortement liée à la consistance.Cette consistance est influencée par la qualité de service (QoS) offerte parle réseau, principalement en termes de délai, de gigue et d’ordre de paquets.Par conséquent, une solution qui améliore ces paramètres aidera à satisfairedavantage de joueurs et à améliorer la qualité de service.L’objectif de cette thèse est de proposer des solutions pour améliorerla qualité d’expérience des jeux en ligne en augmentant la consistance devue, en réduisant les délais et en augmentant l’efficacité du réseau. Pour leproblème de consistance, nous proposons une topologie de réseau cyclique.Cette topologie ordonnée facilite la mise en place des procédures de gestionet de contrôle de la transmission pour imposer un ordre causal entre tousles joueurs. Concernant le délai et l’efficacité du réseau, certains ont proposé l’application de la technique du tunnel, compression et multiplexage(TCM). Cependant, les paquets transmis avec TCM sont plus grands queceux d’origine, ce qui nécessite plus de temps pour les transmettre et augmente le risque de saturation au niveau des fils d’attente. Nous proposonsl’utilisation de la technique de codage réseau (NC) qui permet d’augmenterle débit dans certaines conditions de topologies et de routage. Cette technique permet aux nœuds intermédiaires d’encoder les paquets qu’ils reçoivent plutôt que d’effectuer une simple fonction de stockage et de transfert. Celapeut réduire la charge de trafic, réduire les délais et augmenter l’efficacité duréseau.Dans cette thèse, nous proposons des modifications pour améliorer latechnique TCM et nous évaluons ses performances. De plus, nous proposonsd’ajouter le concept de partition des joueurs et de changer la topologie d’unarbre à une forêt. Nous étudions ensuite la topologie cyclique. Nous concevons un protocole de routage optimisé sur une topologie en cycle baséesur la technique de codage réseau. Puis, nous évaluons ses performances entermes de délai, de charge et d’ordre. Les résultats montrent que l’utilisationdu codage NC permet de réduire la charge et le nombre de paquets transmis, garantir un ordre de paquet par période et de réduire le délai. Eneffet, on peut gagner jusqu’à 14% de latence avec notre protocole par rapport à un protocole de routage optimisé sans codage réseau. Par la suite,nous proposons un scénario de mise en pratique de cette solution sur une infrastructure Device-to-Device. Nous validons les limites théoriques du délaien utilisant des simulations réseau et nous discutons ensuite des contraintespratiques qui s’imposent lors de l’implémentation dans un réseau réel. Finalement, nous proposons des solutions pour ces contraintes<br>The application of massively multiplayer online games provides a large partof the global internet traffic. The traffic is typically encapsulated in TCPsegments of small size information (the so called payload) resulting in a highvolume of headers transmitted through the network. This implies the following: 1) the packets’ size is too small for efficient routing and; 2) thebandwidth required by the server seems to be increasing. Therefore, it isnecessary to find more efficient transmission and routing techniques to reduce the traffic’s volume and to increase the network’s efficiency in orderto support the growing number of players. On the other hand, Quality ofExperience (QoE) in the context of online games is strongly influenced byconsistency. This consistency is influenced by the quality of service (QoS) offered by the network, mainly in terms of delay, jitter and order of the packets.As a result, a solution that enhances these parameters will help in satisfyingmore players and subsequently improving QoE.The goal of this thesis is to propose solutions to enhance the QoE of onlinegames by increasing the consistency of view, reducing the delay and increasing the efficiency of the network. For consistency, we propose a cyclic networktopology. This ordered topology facilitates the implementation of transmission management and control procedures to impose a causal order betweenall players. As for the delay and the efficiency problem, some have proposed the application of Tunneling, Compression and Multiplexing (TCM)technique. However, the transmitted packets with TCM are larger than theoriginal ones, which requires more delay to transmit them and increases therisk of congestion. We propose the use of the Network Coding technique(NC) which makes it possible to increase the bit rate of the network undercertain topological and routing conditions. This technique allows intermediate nodes to encode the data they receive rather than perform a simple”store and forward” function. It can reduce the traffic load, reduce the delay and increase the network’s efficiency.In this thesis, we propose some modifications to enhance the TCM technique and evaluate its performance. Besides, we propose to add the playerspartition approach and change the topology from a tree to a forest. Afterwards, we investigate the cyclic topology. We design an optimized routingprotocol over a cycle topology based on the network coding technique andevaluate its performance in terms of delay and order. The results show thatby using NC coding, one can gain up to 14% of latency over an optimizedrouting protocol for the cycle topology without the use of network coding.Afterwards, we propose a practical implementation scenario of this solutionover a device-to-device (D2D) infrastructure. We finally validate the theoretical limits of delay using network simulations and discuss a number ofpractical constraints
APA, Harvard, Vancouver, ISO, and other styles
2

Sherrard-Smith, Eleanor. "Macroparasites of the Eurasian otter : distributions, life-cycles and population dynamics." Thesis, Cardiff University, 2013. http://orca.cf.ac.uk/48854/.

Full text
Abstract:
Potential alterations of host and parasite ranges are likely with climate change so an understanding of the host traits and ecological factors that can influence host-parasite interactions is vital for the effective protection of ecosystems. Accidental introductions of non-native species can place elevated stress on native ecosystems so that the examination of key species can act as early warning systems. The Eurasian otter, Lutra lutra¸ is a top predator and sentinel species for the health of European freshwater ecosystems and is therefore a suitable model for exploring parasite fauna introductions. In this PhD, the patterns and processes that define macro-parasitic infections were explored using evidence from post-mortems of 587 otters. Specifically, the invasive status of two helminths (Pseudamphistomum truncatum and Metorchis albidus: Trematoda; Opisthorchiidae) was investigated, both species having been identified in the UK otter populations for the first time within the last 10 years. Genetic variation, however, was similar across Europe indicating neither helminth is likely to have been a recent introduction to the UK., The distribution of both helminths as well as the only ectoparasite, Ixodes hexagonus (Arthropoda; Ixodidae), recovered from UK otters, were associated with abiotic factors, particularly temperature. The complexity of the parasite life cycles was investigated; otters act as a definitive host for both helminth species considered in this thesis and early stage intermediate hosts were identified for P. truncatum as the snail Radix balthica and the roach Rutilus rutilus. Metacercariae of M. ablidus were detected on chub (Leuciscus cephalus), rudd (Scardinius erythrophthalmus) and roach. Parasite aggregation and parasite fecundity of the P. truncatum populations were influenced by abiotic factors, region and season, whilst P. truncatum abundance was defined better by the biotic factors host age-class and condition demonstrating how multiple factors combine to produce parasite population dynamics in wild fauna. Ultimately, the data collated throughout this PhD was used to parameterise a susceptible-infected Susceptible-Infected (SI) model describing the host population dynamics of opisthorchiid trematodes. This model is applied to the P. truncatum system to examine which factors might determine the proportion of hosts that become infected.
APA, Harvard, Vancouver, ISO, and other styles
3

Appleton, Paul Lawrence. "Investigations on the cytology and life-cycle of the parasitic dinoflagellate Hematodinium sp associated with mortality of Nephrops norvegicus." Thesis, University of Glasgow, 1996. http://theses.gla.ac.uk/967/.

Full text
Abstract:
Dinoflagellate parasites of the genus Hematodinium are associated with heavy mortality of the Norway lobster (Nephrops norvegicus) off the west coast of Scotland. The Syndinean dinoflagellate has been isolated from N. norvegicus and has been successfully cultured axenically in vitro. Twelve isolates have been serially cultivated in a medium of 10% fetal calf serum in a balanced Nephrops saline with added antibiotics at 8-10°C. In this medium the parasite undergoes developmental changes that are believed to represent stages in the life cycle of the parasite in vivo. This is the first complete life cycle in vitro to be described for a Syndinean dinoflagellate. Flagellate dinospores arise in vitro from circulating sporogenic parasite forms - sporoblasts removed in the haemolymph from infected lobsters. Sporogenic parasites are recognised by the presence in the cytoplasm of structures not found in the trophont. These are (1) trichocysts and (2) flagellar hairs within swollen endoplasmic reticulum cisternae. Dinospores are of two types - a larger macrospore and a smaller, more active microspore. Individual isolates produce one or the other, not both. Condensation of chromosomes in the nucleus is more pronounced in the microspore than in the macrospore. Both spore types germinate after 18-62 days in the culture medium to produce the main multiplicative stage of the parasite in vitro - the multinucleate filamentous trophont. No fusion of flagellates has been observed and each type of spore can germinate independently of the presence of the other, indicating that the spores are not gametes. The filamentous trophonts correspond to the only form of the type species of the genus, Hematodinium perezi, found circulating in the blood of infected crabs by Chatton and Poisson (1931). (DXN004,487)
APA, Harvard, Vancouver, ISO, and other styles
4

Puckridge, James Terence. "The role of hydrology in the ecology of Cooper Creek, Central Australia : implications for the flood pulse concept /." Title page, abstract and contents only, 1999. http://web4.library.adelaide.edu.au/theses/09PH/09php9774.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Roussel, Kévin. "Évaluation et amélioration des plates-formes logicielles pour réseaux de capteurs sans-fil, pour optimiser la qualité de service et l'énergie." Thesis, Université de Lorraine, 2016. http://www.theses.fr/2016LORR0051/document.

Full text
Abstract:
Dans le domaine des réseaux de capteurs sans-fil (dits « WSN »), les piles réseau spécialisées constituent un domaine de recherche très actif depuis maintenant de nombreuses années. Toutefois, beaucoup de ces études, notamment concernant les couches basses de ces piles réseau, n’ont pas dépassé le stade de la théorie. Leurs implantations n’ont sauf exception pas fait l’objet d’efforts poussés ou systématiques, surtout dans le cadre des systèmes d’exploitation spécialisés. Nous nous proposons donc, dans cette thèse, de nous focaliser sur l’analyse des interactions entre les protocoles des couches basses et les plates-formes logicielles dédiées, et de les optimiser, notamment au niveau de l’implantation. Nous passons d’abord en revue et évaluons les différents systèmes d’exploitation spécialisés, et choisissons celui offrant les fonctionnalités, notamment temps-réel, que nous estimons nécessaires pour implanter des protocoles MAC / RDC novateurs et performants. Nous entreprenons ensuite un effort d’étude, d’amélioration et d’optimisation de ces couches basses des piles spécialisées, et montrons, avec une implantation concrète d’un de nos protocoles MAC / RDC avancés, que nous pouvons amener des progrès notables dans la qualité de service (QdS) des WSN, notamment avec un trafic réseau intense. Nous examinons en outre des inexactitudes inattendues dans les simulations / émulations effectuées par Cooja / MSPSim, et analysons les problèmes de fiabilité posés par l’utilisation de cet outil pour effectuer des évaluations de performances, notamment temporelles, de WSN. Nous proposons enfin de nouvelles pistes pour de futures améliorations et optimisations de ces couches basses des piles réseau spécialisées, afin d’améliorer encore la fiabilité, les performances et la consommation énergétique des WSN<br>In the field of wireless sensors networks (WSN), specialized network stacks have been a very active research field for many years. However, most of this research, especially on lower layers of the network stacks, did not go beyond theory. Their implementations have generally not been the subject of deep or systematic effort, especially within the framework of dedicated operating systems. We thus propose, in this thesis, to focus on interaction analysis between lower layers’ protocols and dedicated software platforms, and to optimize them, especially at the implementation level. We first review and evaluate the various dedicated operating systems, and choose the one offering the necessary features to implement efficient and innovative MAC/RDC protocols. We then study, improve and optimize these lower layers of specialized stacks, and show, with an actual implementation of one of our advanced MAC/RDC protocols, that we can bring significant improvements in the quality of service (QoS) of WSNs, especially under heavy network traffic. We also report inaccuracies in Cooja/MSPSim simulations/emulations, and analyze the reliability issues caused by the use of this tool for performing evaluations (especially time-related) of WSNs. We finally propose some new leads for future enhancements and optimizations of the lower layers of these specialized network stacks, in order to further improve the liability, performances and energy consumption of WSNs
APA, Harvard, Vancouver, ISO, and other styles
6

Roussel, Kévin. "Évaluation et amélioration des plates-formes logicielles pour réseaux de capteurs sans-fil, pour optimiser la qualité de service et l'énergie." Electronic Thesis or Diss., Université de Lorraine, 2016. http://www.theses.fr/2016LORR0051.

Full text
Abstract:
Dans le domaine des réseaux de capteurs sans-fil (dits « WSN »), les piles réseau spécialisées constituent un domaine de recherche très actif depuis maintenant de nombreuses années. Toutefois, beaucoup de ces études, notamment concernant les couches basses de ces piles réseau, n’ont pas dépassé le stade de la théorie. Leurs implantations n’ont sauf exception pas fait l’objet d’efforts poussés ou systématiques, surtout dans le cadre des systèmes d’exploitation spécialisés. Nous nous proposons donc, dans cette thèse, de nous focaliser sur l’analyse des interactions entre les protocoles des couches basses et les plates-formes logicielles dédiées, et de les optimiser, notamment au niveau de l’implantation. Nous passons d’abord en revue et évaluons les différents systèmes d’exploitation spécialisés, et choisissons celui offrant les fonctionnalités, notamment temps-réel, que nous estimons nécessaires pour implanter des protocoles MAC / RDC novateurs et performants. Nous entreprenons ensuite un effort d’étude, d’amélioration et d’optimisation de ces couches basses des piles spécialisées, et montrons, avec une implantation concrète d’un de nos protocoles MAC / RDC avancés, que nous pouvons amener des progrès notables dans la qualité de service (QdS) des WSN, notamment avec un trafic réseau intense. Nous examinons en outre des inexactitudes inattendues dans les simulations / émulations effectuées par Cooja / MSPSim, et analysons les problèmes de fiabilité posés par l’utilisation de cet outil pour effectuer des évaluations de performances, notamment temporelles, de WSN. Nous proposons enfin de nouvelles pistes pour de futures améliorations et optimisations de ces couches basses des piles réseau spécialisées, afin d’améliorer encore la fiabilité, les performances et la consommation énergétique des WSN<br>In the field of wireless sensors networks (WSN), specialized network stacks have been a very active research field for many years. However, most of this research, especially on lower layers of the network stacks, did not go beyond theory. Their implementations have generally not been the subject of deep or systematic effort, especially within the framework of dedicated operating systems. We thus propose, in this thesis, to focus on interaction analysis between lower layers’ protocols and dedicated software platforms, and to optimize them, especially at the implementation level. We first review and evaluate the various dedicated operating systems, and choose the one offering the necessary features to implement efficient and innovative MAC/RDC protocols. We then study, improve and optimize these lower layers of specialized stacks, and show, with an actual implementation of one of our advanced MAC/RDC protocols, that we can bring significant improvements in the quality of service (QoS) of WSNs, especially under heavy network traffic. We also report inaccuracies in Cooja/MSPSim simulations/emulations, and analyze the reliability issues caused by the use of this tool for performing evaluations (especially time-related) of WSNs. We finally propose some new leads for future enhancements and optimizations of the lower layers of these specialized network stacks, in order to further improve the liability, performances and energy consumption of WSNs
APA, Harvard, Vancouver, ISO, and other styles
7

Zagler, Martin. "Capital Taxation and Economic Performance." SFB International Tax Coordination, WU Vienna University of Economics and Business, 2007. http://epub.wu.ac.at/1516/1/document.pdf.

Full text
Abstract:
A new technology is a bold new combination of production factors that potentially yields a higher level of total factor productivity. The optimal combination of input factors is unknown when an innovation is pursued. A larger targeted innovation may require a greater change in the optimal combination of production factors employed and increases volatility alongside with economic growth. We show that economic policy can interfere in this relationship with by adjusting source based capital income taxes.<br>Series: Discussion Papers SFB International Tax Coordination
APA, Harvard, Vancouver, ISO, and other styles
8

Shih, Chung-Hung, and 施昌宏. "A DRX Cycles Adjustment Scheme with QoS Guarantee in LTE System." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/73309628234340801405.

Full text
Abstract:
碩士<br>國立交通大學<br>電信工程研究所<br>100<br>In the Long Term Evolution (LTE) system, Discontinuous Reception (DRX) has been introduced for power saving to extend the battery life of the User Equipment (UE). In this thesis, we take an overview of the DRX mechanism and further analysis the mechanism with bursty packet traffic model. We propose a scheme for DRX Cycle adjustment to enhance the power saving performance in different traffic conditions. Based on the analytical model, effects of the DRX parameters on the packet delay performance are also investigated. Simulation results show that the scheme can reduce the power consumption with satisfying the packet delay requirement and a trade-off relationship between power saving and packet delay performance.
APA, Harvard, Vancouver, ISO, and other styles
9

Chin-LienLiu and 劉晉連. "QUota-Oriented Interleaved Polling with Adaptive Cycle Time (QUIPACT):A Delay-Constrained Scheme for QoS Support in EPONs." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/75961696422184339539.

Full text
Abstract:
碩士<br>國立成功大學<br>電腦與通信工程研究所<br>98<br>This thesis proposes a Delay-Constrained Scheme for supporting the triple-play services in EPON networks. The proposed scheme adopts a fixed frame approach. In each frame, a mechanism is provided to enable real-time traffic to reserve sufficient bandwidth and control the delay variation to meet its transmission needs. In this manner, the proposed scheme can provide the necessary requirements, such as the guaranteed of the delay variation and delay bound for real-time traffic. Additionally, because the proposed scheme reserve the minimum bandwidth for the BE traffic, the BE traffic can be prevent from starvation. Furthermore, the proposed scheme can dynamically adjust transmission boundary between the real-time and the BE traffic according to the various requests of the subscribers. Finally, computer simulations have shown that the proposed scheme can have better performance than other QoS schemes in terms of throughput, jitter and delay bound.
APA, Harvard, Vancouver, ISO, and other styles
10

Wyndham, Timothy David. "Biogeochemical cycling and transport of trace metals in the inner Great Barrier Reef." Phd thesis, 2005. http://hdl.handle.net/1885/151593.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "QLS cycle"

1

Ben Slimane, Jamila, Ye-Qiong Song, Anis Koubaa, and Mounir Frikha. "Joint Duty Cycle Scheduling, Resource Allocation and Multi-constrained QoS Routing Algorithm." In Ad-hoc, Mobile, and Wireless Networks. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-22450-8_3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Echagüe, Juan, Manuel Prieto, Jesús Villadangos, and Vicent Cholvi. "A Distributed Algorithm to Provide QoS by Avoiding Cycles in Routes." In Quality of Service in the Emerging Networking Panorama. Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-30193-6_23.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Dutta, Dushyanta, Arindam Karmakar, and Dilip Kr Saikia. "Determining Duty Cycle and Beacon Interval with Energy Efficiency and QoS for Low Traffic IEEE 802.15.4/ZigBee Wireless Sensor Networks." In Advanced Computing, Networking and Informatics- Volume 2. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07350-7_9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Giallonardo, Ester, and Eugenio Zimeo. "Adding Semantics to QoS Requirements." In Engineering Reliable Service Oriented Architecture. IGI Global, 2011. http://dx.doi.org/10.4018/978-1-60960-493-6.ch006.

Full text
Abstract:
To lead the software-service revolution and to make real the promise of Business to Business interactions, QoS and Semantics play key roles in every phase of Web processes’ life-cycle. Ontology-based approaches for specifying QoS enable machines to reason autonomously and dynamically on QoS knowledge, aiding the development of open and large-scale distributed applications. This chapter presents the impact of Semantics for the management of QoS Requirements in Service-based Applications, focusing on the onQoS ontology, its role for specifying service requirements and to support queries for service discovery through the onQoS-QL language. The introduced concepts and the results presented in the chapter pave the way to new technology horizons where the semantics could represent the global glue for Web processes.
APA, Harvard, Vancouver, ISO, and other styles
5

Hebo, Abduletif. "Integration of Six Sigma Tools into the Quality Management System of Ethiopian Manufacturing Industries." In Business, Management and Economics. IntechOpen, 2024. http://dx.doi.org/10.5772/intechopen.114292.

Full text
Abstract:
A quality management system is a well-documented system that ensures consistency and improvements in working methods. Six Sigma contains a set of tools and techniques for process improvement. This chapter discusses the possibility of integrating Six Sigma tools into the quality management system of Ethiopian manufacturing industries. Both tools can be integrated through basic principles, improvement cycles, and/or insertion into existing integrated systems with new paradigms. Six Sigma’s Define-Measure-Analyze-Improve-Control (DMAIC) model can be integrated with ISO 9001 QMS’s Plan-Do-Check-Act (PDCA) cycle to improve all processes and all entire systems. Furthermore, five main principles of Six Sigma can be equivalently fit into the seven principles of ISO 9001. The analysis herein shows how this integration occurs and the related benefits for manufacturing organizations. In the comprehensive approach to excellence, where most improvement tools such as the BPR, BSC, Kaizen and ISO 9001 QMS were compiled under the TQM umbrella, Six Sigma improvement steps/cycles can be integrated into steps such as planning, design and analysis, and implementation and improvement.
APA, Harvard, Vancouver, ISO, and other styles
6

Kritikos, Kyriakos, and Dimitris Plexousakis. "Towards Aligning and Matchmaking QoS-Based Web Service Specifications." In Handbook of Research on Service-Oriented Systems and Non-Functional Properties. IGI Global, 2012. http://dx.doi.org/10.4018/978-1-61350-432-1.ch010.

Full text
Abstract:
QoS plays an important role in all service life-cycle activities, and consequently, has grabbed the researchers’ attention. Concerning QoS-based service description, the various approaches proposed adopt different meta-models and propose different QoS models mostly covering domain-independent NFPs and metrics. This lack of a common QoS meta-model and model causes serious accuracy problems in QoS-based service matchmaking. While mapping between QSDs is not difficult as they rely on similar meta-models, mapping between equivalent metrics specified even with the same meta-model is challenging. For this reason, a novel QoS metric matching algorithm has been proposed for metrics specified in the OWL-Q language. In this chapter, this algorithm is exploited for aligning OWL-Q specifications. Moreover, two novel QSM algorithms are proposed that advance the state-of-the-art by solving the problems of non-coverage of QoS demand metrics by QoS offers, erroneous matchmaking metrics, limited service categorization, and non-useful result production for over-constrained QoS demands.
APA, Harvard, Vancouver, ISO, and other styles
7

Chalke, Tejas, Madhura Bodkhe, Sunil Jayant Kulkarni, and Ajaygiri K. Goswami. "Application of Quantum Dots for Energy Conservation and Storage." In Advances in Chemical and Materials Engineering. IGI Global, 2024. http://dx.doi.org/10.4018/979-8-3693-2798-2.ch004.

Full text
Abstract:
Nanoscale semiconductor particles known as quantum dots have distinct electrical and optical characteristics. Quantum dots (QDs) show remarkable promise in the solar energy arena for enhancing solar cell performance. Their adjustable bandgap maximizes the use of the solar spectrum and raises the overall efficiency of energy conversion. As they provide adjustable emission colours, QDs are also essential to the advancement of energy-efficient light-emitting diodes (LEDs). QDs also improve thermoelectric materials, which makes it possible to convert waste heat into energy more effectively. In order to increase charge/discharge rates, energy density, and cycle life overall, quantum dots are being investigated for use in batteries and capacitors. The potential of quantum dots in supercapacitors is also examined in this article. Furthermore, their integration into smart windows offers a creative way to control interior temperatures and lessen the need for artificial lighting, which supports the construction of energy-efficient buildings.
APA, Harvard, Vancouver, ISO, and other styles
8

Krieger, Josh, and Ashika Jain. "Choked off: Tamponade." In Critical Care Emergencies, edited by Lillian Liang Emlet. Oxford University PressNew York, 2023. http://dx.doi.org/10.1093/med/9780190082581.003.0019.

Full text
Abstract:
Abstract Cardiac tamponade can present insidiously with nonspecific symptoms of dyspnea and tachycardia. Findings on exam can include cool extremities and peripheral edema with elevated jugular venous pressure. Chest radiography may demonstrate clear lungs with an enlarged cardiac silhouette. ECG may show low-amplitude QRS complexes with beat-to-beat variability in amplitude. Pericardial effusions are diagnosed with transthoracic echocardiography, and the first sign of tamponade is right atrial collapse during systole, followed by diastolic collapse of the right ventricle. Severity of tamponade can be judged by the presence of hypotension as well as the duration of right atrial collapse throughout the cardiac cycle. Tamponade can be temporized by administration of intravenous volume and is treated with pericardiocentesis.
APA, Harvard, Vancouver, ISO, and other styles
9

Katritsis, Demosthenes G., and A. John Camm. "Atrial fibrillation and supraventricular arrhythmias." In The ESC Textbook of Intensive and Acute Cardiovascular Care, edited by Marco Tubaro, Pascal Vranckx, Eric Bonnefoy-Cudraz, Susanna Price, and Christiaan Vrints. Oxford University Press, 2021. http://dx.doi.org/10.1093/med/9780198849346.003.0054.

Full text
Abstract:
The term supraventricular tachycardia (SVT) refers to atrial arrhythmias, including atrial fibrillation, atrioventricular nodal reentry, and atrioventricular reentry due to accessory pathway(s). In clinical practice, SVT may present as narrow- or wide-QRS tachycardias, and with the potential exception of atrial fibrillation, most of them are usually, although not invariably, manifest as regular rhythms. They are usually intrusive, symptomatic, and anxiety provoking but not dangerous. However, depending on their cycle length and the patient's background, they could also be, rarely, life-threatening conditions. In the acute setting, consideration of epidemiology data, clinical presentation, and the 12 lead ECG can provide diagnostic clues for differential diagnosis between SVT and ventricular arrhythmias, and guide appropriate therapy.
APA, Harvard, Vancouver, ISO, and other styles
10

Boyd, Lesley G., and Jill W. Fresen. "An Integrated Management Approach in a Higher Education Technology Support Unit." In Cases on Educational Technology Planning, Design, and Implementation. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-4237-9.ch012.

Full text
Abstract:
This case study is located in the Department for Education Innovation (EI), a teaching and learning support unit at the University of Pretoria in South Africa. The initial problem was the need to apply project management and quality management principles to the services offered by the department to faculty members. The authors describe the implementation of a formal, online, process-based Quality Management System (QMS) designed to self evaluate, document, and improve the Instructional Design (ID) process that guides the development of educational technology solutions in EI. The project was completed in 2005 and was included in a CEN (European Committee for Standardization) Good Practice Guide for outstanding implementations of quality approaches in e-learning. The QMS provides a mechanism to support a consistent project management approach, and the case illustrates successful integration between three cycles: Project Management (PM), Quality Management (QM), and the ADDIE (Analysis, Design, Development, Implementation, and Evaluation) instructional design process.
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "QLS cycle"

1

Malik Matin, Iik Muhamad, Susana Dwi Yulianti, Rifka Nur Cahyani, Nisrina Tsany Sulthanah, Dinda Kadarwati, and Noorlela Marcheta. "Performance of LORA Gateway MQTT Protocol Communication on Motor Cycle IoT-Based: A QoS Analysis." In 2024 7th International Conference on Information and Communications Technology (ICOIACT). IEEE, 2024. https://doi.org/10.1109/icoiact64819.2024.10912911.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Alsheyab, M. A. "Fatigue life evaluation of asphalt mixtures containing natural river sands and designed by bailey method." In Advanced Topics in Mechanics of Materials, Structures and Construction. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902592-26.

Full text
Abstract:
Abstract. This study aims to investigate the efficiency of Bailey method of optimizing the fatigue life of asphalt mixtures when natural sand is included in the mix at two coarseness levels of aggregate gradations: Fine-Graded (FG) and Coarse-Graded (CG), with three mixes which varied with the percentage of the natural river sand, were prepared at each coarseness level, namely: Corse-Graded with Quarry Sand only (CG-QS), Corse-Graded with Natural Sands only (CG-NS), Corse-Graded with Quarry and Natural Sands (CG-QNS), Fine-Graded with Quarry Sand only (FG-QS), Fine-Graded with Natural Sands only (FG-NS), and Fine-Graded with Quarry and Natural Sands (CG-QNS). The portions of the natural sand either in CG-QNS and FG-QNS mixes were minimized as possible without violating the Bailey ratios. The Beam Fatigue (BF) test was used to evaluate the performance of each mixture at a strain level of 1000 micro strain. The sensitivities of the volumetric measures with Nf were evaluated. The study’s findings indicate that the Number of Cycles to Failure (Nf) was generally decreasing with the increase of the natural sand in the mix at any strain levels. The Dust Proportion (DP) was the most significant volumetric. The Bailey gradation method successfully provided a similar gradation coarseness for CG-QNS compared to CG-QS, which resulted in comparable Nf and indicates a similar aggregate interlock.
APA, Harvard, Vancouver, ISO, and other styles
3

Hattori, T., R. Rungsawang, K. Ohta, and K. Tukamoto. "Spatio-temporal waveform of focused half-cycle THz pulses." In Quantum Electronics and Laser Science (QELS). Postconference Digest. IEEE, 2003. http://dx.doi.org/10.1109/qels.2003.238640.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Paulus, G. G. "Strong-field photoionization and absolute phase of few-cycle laser pulses." In Quantum Electronics and Laser Science (QELS). Postconference Digest. IEEE, 2003. http://dx.doi.org/10.1109/qels.2003.238326.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Aase, Svein Arne, Sten Roar Snare, Ole Christian Mjolstad, Havard Dalen, Fredrik Orderud, and Hans Torp. "QRS detection and cardiac cycle separation without ECG." In 2009 IEEE International Ultrasonics Symposium. IEEE, 2009. http://dx.doi.org/10.1109/ultsym.2009.5441469.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Sansone, G., E. Benedetti, F. Calegari, et al. "Isolated attosecond pulses in the few-cycle regime." In 2007 Quantum Electronics and Laser Science Conference. IEEE, 2007. http://dx.doi.org/10.1109/qels.2007.4431034.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Tavella, F., L. Veisz, A. Marcinkevicius, and F. Krausz. "Multiterawatt three-cycle optical parametric chirped pulse amplifier." In 2007 Quantum Electronics and Laser Science Conference. IEEE, 2007. http://dx.doi.org/10.1109/qels.2007.4431511.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Chini, Michael, Baozhen Zhao, He Wang, Yan Cheng, Suxing Hu, and Zenghu Chang. "Sub-cycle AC Stark Shift." In Quantum Electronics and Laser Science Conference. OSA, 2012. http://dx.doi.org/10.1364/qels.2012.qtu3h.7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Wegener, M., T. Tritschler, O. D. Mucke, U. Morgner, and F. X. Kartner. "Determining the carrier-envelope frequency and phase by few-cycle nonlinear optics in semiconductors." In Quantum Electronics and Laser Science (QELS). Postconference Digest. IEEE, 2003. http://dx.doi.org/10.1109/qels.2003.238318.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Shmuel Sternkla, Tal Arditi, and Er'el Granot. "Superluminal Brillouin amplification for sub-cycle interactions of modulated light." In 2007 Quantum Electronics and Laser Science Conference. IEEE, 2007. http://dx.doi.org/10.1109/qels.2007.4431753.

Full text
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!