Relevant bibliographies by topics / SPS

Academic literature on the topic 'SPS'

Author: Grafiati
Published: 4 June 2021
Last updated: 23 March 2023

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Journal articles on the topic "SPS"

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Orrù, Roberto, Roberta Licheri, Clara Musa, and Giacomo Cao. "Coupling SHS and SPS Processes." Advances in Science and Technology 88 (October 2014): 111–20. http://dx.doi.org/10.4028/www.scientific.net/ast.88.111.

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The consolidation of refractory ceramic powders at relatively milder conditions with respect to conventional methods represents an important target to achieve. Based on results recently reported in the literature, it is possible to state that the combination of the Self-propagating High-temperature Synthesis (SHS) with the Spark Plasma Sintering (SPS) technologies provides a useful contribution in this direction. Specifically, the two-steps processing route consisting in the synthesis of the ceramic powders by SHS and their subsequent densification by SPS is successfully utilized to obtain various dense MB2-based materials (M= Zr, Hf, Ta). In this regard, an important role is played by the SHS process, particularly for the synthesis of composite powders. Indeed, stronger interfaces are established among the different phases formed in-situ, so that diffusion phenomena are promoted during SPS. Additional benefits are produced by the use of the latter technology, due to the direct passage of the electric current through the powders undergoing sintering and the die containing them.
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Mei, Linlu, Vladimir Rozanov, Evelyn Jäkel, Xiao Cheng, Marco Vountas, and John P. Burrows. "The retrieval of snow properties from SLSTR Sentinel-3 – Part 2: Results and validation." Cryosphere 15, no. 6 (June 18, 2021): 2781–802. http://dx.doi.org/10.5194/tc-15-2781-2021.

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Abstract. To evaluate the performance of the eXtensible Bremen Aerosol/cloud and surfacE parameters Retrieval (XBAER) algorithm, presented in the Part 1 companion paper to this paper, we apply the XBAER algorithm to the Sea and Land Surface Temperature Radiometer (SLSTR) instrument on board Sentinel-3. Snow properties – snow grain size (SGS), snow particle shape (SPS) and specific surface area (SSA) – are derived under cloud-free conditions. XBAER-derived snow properties are compared to other existing satellite products and validated by ground-based and aircraft measurements. The atmospheric correction is performed on SLSTR for cloud-free scenarios using Modern-Era Retrospective Analysis for Research and Applications (MERRA) aerosol optical thickness (AOT) and the aerosol typing strategy according to the standard XBAER algorithm. The optimal SGS and SPS are estimated iteratively utilizing a look-up-table (LUT) approach, minimizing the difference between SLSTR-observed and SCIATRAN-simulated surface directional reflectances at 0.55 and 1.6 µm. The SSA is derived for a retrieved SGS and SPS pair. XBAER-derived SGS, SPS and SSA have been validated using in situ measurements from the recent campaign SnowEx17 during February 2017. The comparison shows a relative difference between the XBAER-derived SGS and SnowEx17-measured SGS of less than 4 %. The difference between the XBAER-derived SSA and SnowEx17-measured SSA is 2.7 m2/kg. XBAER-derived SPS can be reasonably explained by the SnowEx17-observed snow particle shapes. Intensive validation shows that (1) for SGS and SSA, XBAER-derived results show high correlation with field-based measurements, with correlation coefficients higher than 0.85. The root mean square errors (RMSEs) of SGS and SSA are around 12 µm and 6 m2/kg. (2) For SPS, aggregate SPS retrieved by XBAER algorithm is likely to be matched with rounded grains while single SPS in XBAER is possibly linked to faceted crystals. The comparison with aircraft measurements, during the Polar Airborne Measurements and Arctic Regional Climate Model Simulation Project (PAMARCMiP) campaign held in March 2018, also shows good agreement (with R=0.82 and R=0.81 for SGS and SSA, respectively). XBAER-derived SGS and SSA reveal the variability in the aircraft track of the PAMARCMiP campaign. The comparison between XBAER-derived SGS results and the Moderate Resolution Imaging Spectroradiometer (MODIS) Snow-Covered Area and Grain size (MODSCAG) product over Greenland shows similar spatial distributions. The geographic distribution of XBAER-derived SPS over Greenland and the whole Arctic can be reasonably explained by campaign-based and laboratory investigations, indicating a reasonable retrieval accuracy of the retrieved SPS. The geographic variabilities in XBAER-derived SGS and SSA both over Greenland and Arctic-wide agree with the snow metamorphism process.
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Fletcher, Iain M., and Mathew M. Monte-Colombo. "An investigation into the possible physiological mechanisms associated with changes in performance related to acute responses to different preactivity stretch modalities." Applied Physiology, Nutrition, and Metabolism 35, no. 1 (February 2010): 27–34. http://dx.doi.org/10.1139/h09-125.

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The aim of this study was to explore the potential mechanisms underlying performance changes linked to different warm-up stretch modalities. Twenty-one male collegiate–semiprofessional soccer players (age, 20.8 ±2.3 years) performed under 3 different warm-up conditions: a no-stretch warm-up (WU), a warm-up including static passive stretches (SPS), and a warm-up incorporating static dynamic stretches (SDS). Countermovement jump, drop jump, peak torque, heart rate, core temperature, movement kinematics, and electromyography (EMG) were recorded for each intervention. Significant increases (p < 0.001) in performance were recorded for the countermovement, drop jump, and peak torque measures when the SDS was compared with the WU and SPS trials. When mechanism data were analysed, heart rate was significantly higher (p < 0.001) in the SDS condition compared with the SPS and WU conditions (a pattern also shown with core temperature), whereas the WU condition heart rate was also significantly higher than the SPS condition heart rate. When EMG data were examined for the rectus femoris muscle, significantly greater (p < 0.01) muscle activity was observed in the SDS condition compared with the SPS condition. It seems the most likely mechanisms to explain the increase in performance in the SDS condition compared with the SPS condition are increased heart rate, greater muscle activity, and increased peak torque.
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Picornell Buendía, Mª Raquel, Arturo Pardo Giménez, and José Arturo De Juan Valero†. "Agronomic quantitative assessment of substrates based on spents of Agaricus bisporus and Pleurotus ostreatus." Acta agriculturae Slovenica 107, no. 2 (October 26, 2016): 355. http://dx.doi.org/10.14720/aas.2016.107.2.09.

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<p class="TNR12">In this work the agronomic viability of substrates based on spents of <em>Agaricus bisporus</em> (J.E.Lange) Imbach) (SAS) and <em>Pleurotus ostreatus</em> (Jacq.) P. Kumm. (SPS) was studied. In addition to the commercial substrate used as reference, six different treatments were considered. In this experiment, SPS and SAS were mixed in different ratios (from 6,000 g and 0 g, respectively, up to 3,000 g and 3,000 g, respectively). SAS was subjected to a heat treatment in a growing room ("cook out") and then to a maturation treatment which consisted of a controlled recomposting process in growing rooms. SPS was subjected to a pasteurizing heat treatment (60 °C - 65 °C, 8 h) and progressive decrease for at least 15 h to a "spawning" temperature (25 °C).</p>SPS (5,400 g) + SAS (600 g) and SPS (4,800 g) + SAS (1,200 g) were prepared substrates with biological efficiencies (BE) of 35.98 % and 39.68 % respectively, lower than the control (46.18 %) and acceptable yields. The average unit mass of fruiting body harvested was low.<strong></strong>
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Eremeeva, J. V., O. V. Myakisheva, V. S. Panov, V. Y. Lopatin, E. V. Ageev, A. V. Lizunov, A. A. Nepapushev, D. A. Sidorenko, D. Yu Mishunin, and E. V. Apostolova. "SPECIFIC FEATURES OF SPS-SINTERING OF BORON CARBIDE POWDERS PRODUCED BY DIFFERENT METHODS." Proceedings of the Southwest State University 21, no. 3 (June 28, 2017): 41–58. http://dx.doi.org/10.21869/2223-1560-2017-21-3-41-58.

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Mechanochemical and SHS methods are up-and-coming ways to produce finely dispersed boron carbide nano powder. With optimal process conditions the synthesized phases have ultra dispersed state with well-developed surfaces of the boundaries of grains and subgrains that have either a nano or microcrystalline structure, and that ensures its higher density after vibrocompaction treatment, which in its turn can result in a reduced burn-out rate and a slow-down absorption activity under the influence of neutron irradiation. The products of mechanochemical synthesis and SHS have specified composition and specific structural state and are related with fast solid-phase reactions. The presented research dealt with boron carbide powders that had been produced by mechanochemical or SHS methods, as well as by carbon char or amorphous boron reduction, or the reduction of boron carbide that had been produced by SPS sintering. The purpose of the research was to determine the most optimal SPS sintering modes and to investigate the structure and properties of the sintered boron carbide workpieces made from the powders produced by the above mentioned methods. Source materials for boron carbide synthesis by mechanochemical method or carbon reduction with subsequent crushing and grinding, as well as for SHS treatment were carbon char of PM-15 grade and amorphous boron of A grade taken in stoichiometric composition. SPS sintering of boron carbon powders produced as above mentioned took place at Spark Plasma Sintering (SPS) - Labox 650 plant in graphite dies of 15 mm in diameter in vacuum under 25… 50 MPa pressure. The study of В4С powder workpieces that had been produced by mechanical synthesis, SHS or carbon reduction or SPS sintering of carbon char and amorphous boron mixture, yielded the most efficient modes of SPS sintering for each powder under research. The highest relative density was observed with SPS sintering of В4С powders produced by mechanosynthesis or SHS.
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Hang, Dong, Amit D. Joshi, Xiaosheng He, Andrew T. Chan, Manol Jovani, Manish K. Gala, Shuji Ogino, et al. "Colorectal cancer susceptibility variants and risk of conventional adenomas and serrated polyps: results from three cohort studies." International Journal of Epidemiology 49, no. 1 (April 30, 2019): 259–69. http://dx.doi.org/10.1093/ije/dyz096.

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Abstract Background Increasing evidence suggests that conventional adenomas (CAs) and serrated polyps (SPs) represent two distinct groups of precursor lesions for colorectal cancer (CRC). The influence of common genetic variants on risk of CAs and SPs remain largely unknown. Methods Among 27 426 participants within three prospective cohort studies, we created a weighted genetic risk score (GRS) based on 40 CRC-related single nucleotide polymorphisms (SNPs) identified in previous genome-wide association studies; and we examined the association of GRS (per one standard deviation increment) with risk of CAs, SPs and synchronous CAs and SPs, by multivariable logistic regression. We also analysed individual variants in the secondary analysis. Results During 18–20 years of follow-up, we documented 2952 CAs, 1585 SPs and 794 synchronous CAs and SPs. Higher GRS was associated with increased risk of CAs [odds ratio (OR) = 1.17, 95% confidence interval (CI): 1.12-1.21] and SPs (OR = 1.09, 95% CI: 1.03-1.14), with a stronger association for CAs than SPs (Pheterogeneity=0.01). An even stronger association was found for patients with synchronous CAs and SPs (OR = 1.32), advanced CAs (OR = 1.22) and multiple CAs (OR = 1.25). Different sets of variants were associated with CAs and SPs, with a Spearman correlation coefficient of 0.02 between the ORs associating the 40 SNPs with the two lesions. After correcting for multiple testing, three variants were associated with CAs (rs3802842, rs6983267 and rs7136702) and two with SPs (rs16892766 and rs4779584). Conclusions Common genetic variants play a potential role in the conventional and serrated pathways of CRC. Different sets of variants are identified for the two pathways, further supporting the aetiological heterogeneity of CRC.
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Shafeeque Ahmed, K., Shanmugam Prabhakar Karthikeyan, and Sarat Kumar Sahoo. "Special Protection Schemes: A Survey and Vision for the Future." Applied Mechanics and Materials 839 (June 2016): 49–53. http://dx.doi.org/10.4028/www.scientific.net/amm.839.49.

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Any power system network is subjected to disturbances at any time and place. It is considered as one of the most stochastic system ever seen by the human beings. To enhance the power system reliability, System Protection Scheme (SPS) is an effective tool for utilizing the power grid during rare contingencies. This method is often employed as secondary protection schemes. SPS is also termed as Special Protection Scheme. SPS is referred with different names by different users such as IEEE as System Integrity Protection Scheme (SIPS), Bonneville Power Administration (BPA) as Remedial Action Scheme (RAS) and WECC and others as SPS. In India, only in late 90s, the concept of SPS was introduced to solve the above problem. In Indian power grid different SPS has been designed and implemented successfully. This paper presents a complete knowledge, need , general structure, characteristics and a brief description of the major SPS employed in various Indian Power grids. Post - commissioning performance of these SPS has also been analyzed briefly. Finally, highlights of major issues involved with the employment of SPS in the Indian scenario.
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Cleymans, Jean, Helmut Oeschler, and Krzysztof Redlich. "Particle ratios at SPS, AGS and SIS." Journal of Physics G: Nuclear and Particle Physics 25, no. 2 (January 1, 1999): 281–85. http://dx.doi.org/10.1088/0954-3899/25/2/016.

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Ollitrault, Jean-Yves. "Flow systematics from SIS to SPS energies." Nuclear Physics A 638, no. 1-2 (August 1998): 195c—206c. http://dx.doi.org/10.1016/s0375-9474(98)00413-8.

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Mei, Linlu, Vladimir Rozanov, Christine Pohl, Marco Vountas, and John P. Burrows. "The retrieval of snow properties from SLSTR Sentinel-3 – Part 1: Method description and sensitivity study." Cryosphere 15, no. 6 (June 18, 2021): 2757–80. http://dx.doi.org/10.5194/tc-15-2757-2021.

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Abstract. The eXtensible Bremen Aerosol/cloud and surfacE parameters Retrieval (XBAER) algorithm has been designed for the top-of-atmosphere reflectance measured by the Sea and Land Surface Temperature Radiometer (SLSTR) instrument on board Sentinel-3 to derive snow properties: snow grain size (SGS), snow particle shape (SPS) and specific surface area (SSA) under cloud-free conditions. This is the first part of the paper, to describe the retrieval method and the sensitivity study. Nine pre-defined SPSs (aggregate of 8 columns, droxtal, hollow bullet rosette, hollow column, plate, aggregate of 5 plates, aggregate of 10 plates, solid bullet rosette, column) are used to describe the snow optical properties. The optimal SGS and SPS are estimated iteratively utilizing a look-up-table (LUT) approach. The SSA is then calculated using another pre-calculated LUT for the retrieved SGS and SPS. The optical properties (e.g., phase function) of the ice crystals can reproduce the wavelength-dependent and angular-dependent snow reflectance features, compared to laboratory measurements. A comprehensive study to understand the impact of aerosols, SPS, ice crystal surface roughness, cloud contamination, instrument spectral response function, the snow habit mixture model and snow vertical inhomogeneity in the retrieval accuracy of snow properties has been performed based on SCIATRAN radiative transfer simulations. The main findings are (1) snow angular and spectral reflectance features can be described by the predefined ice crystal properties only when both SGS and SPS can be optimally and iteratively obtained; (2) the impact of ice crystal surface roughness on the retrieval results is minor; (3) SGS and SSA show an inverse linear relationship; (4) the retrieval of SSA assuming a non-convex particle shape, compared to a convex particle shape (e.g., sphere), shows larger retrieval results; (5) aerosol/cloud contamination due to unperfected atmospheric correction and cloud screening introduces underestimation of SGS, “inaccurate” SPS and overestimation of SSA; (6) the impact of the instrument spectral response function introduces an overestimation into retrieved SGS, introduces an underestimation into retrieved SSA and has no impact on retrieved SPS; and (7) the investigation, by taking an ice crystal particle size distribution and habit mixture into account, reveals that XBAER-retrieved SGS agrees better with the mean size, rather than with the mode size, for a given particle size distribution.
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Dissertations / Theses on the topic "SPS"

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Anders, Ylén. "Införande SPS Arvika Smide AB : SPS och ISO/TS 16949." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-31763.

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Rapporten är ett examensarbete som utförts i den avslutande delen av Högskoleingenjörsprogrammet i Maskinteknik. Examensarbetet är utfört av Anders Dedorsson Ylén, student vid fakulteten för hälsa, teknik- och naturvetenskap på Karlstads Universitet. Examensarbetet har utförts på Arvika Smide AB vars uppdrag gick ut på att införa SPS vid pressgrupp 5, samt undersöka hur väl företaget jobbar med ISO/TS 16949.  I rapporten finns en teoretisk del om SPS och ISO standarden ISO/TS 16949. Vidare beskrivs hur SPS använts som metod för att mäta maskinens duglighet och behov av underhåll, samt hur mätningarna utförts. Här beskrivs också av vad som skett vid renovering av smidespressen och vilka resultateten blev av mätningar gjorda efter arbetet. Lämplig metod för att se vart företaget befinner sig i sitt arbete med ISO/TS 16949 och förslag på förbättrat arbete med ISO/TS redovisas. Rapporten redovisar att SPS kan vara ett styrande medel vid tillståndsbaserat underhåll på en smidespress och hur företaget kan utveckla sitt arbete med ISO/TS 16949.
The report is a master thesis carried out in the final part of the Bachelor of Science education in Mechanical Engineering. The work is carried out by Anders Dedorsson Ylén, a student at the Faculty of Health, technology and natural science at the University of Karlstad. The work has been performed at Arvika Smide AB, whose mission was to introduce SPS at the pressgroup 5, and examine how well the company is working with ISO/TS 16949. The report contains a theoretical part about SPS and ISO standard ISO/TS 16949. It also describes how SPS can be used as a method for measuring machine condition and maintenance needs, and how the test's are carried out. It describes what has happened in the renovation of the forging press, and the results of measurements made after the renovation work was done. An appropriate method is presented to be able to see where the company is in its work with ISO/TS 16949 and suggestions for improved work with ISO/TS is suggested. The report shows that the SPS can be used as a guideline in condition-based maintenance of a forging press and how the company can improve its work with ISO/TS 16949.
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Sharkins, Anthony August. "Instrumentation for SPS-2." Ohio : Ohio University, 1996. http://www.ohiolink.edu/etd/view.cgi?ohiou1178043493.

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Larsson, Kerstin, and Josefina Lundmarck. "Målinriktad SPS - en utredning i processtabilitet." Thesis, Linköping University, Linköping University, Department of Management and Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-17390.

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Det statistiska kvalitetsverktyget Statistisk Processtyrning, SPS, introducerades på BT Products AB i Mjölby utifrån en specifik implementeringsprocess. Introduktionen utfördes i en målningsprocess och genom detta arbete kunde aktuell process utvärderas och orsaker bakom eventuell urskiljbar variation eftersökas. I gällande process målas gods till eldrivna truckar svarta genom elektrostatisk pulvermålning, där eftersträvad färgskikttjocklek är 70 µm. Målningen utförs automatiserat av fyra robotar och för att erhålla kunskap om processens uppförande studerades och analyserades utfallet statistiskt utifrån en bestämd kvalitetsindikator, färgskikttjockleken. Data samlades in utifrån denna indikator genom kontinuerlig mätning på utvalt objekt och med hjälp av en mätmall för att erhålla jämförbara observationer. Tillförlitligheten hos insamlad data analyserades och observationerna uppvisade en normalfördelning och slumpmässighet. En hög grad av autokorrelation sågs dock, varför transformation av data krävdes innan fortsatta studier kunde utföras. I och med denna transformation erhölls oberoende och därmed tillförlitliga residualer, vilka studerades i styrdiagram för att information om processens uppförande över tiden skulle erhållas. Observationerna är individuella och anges som variabeldata, varför stora skiftningar i processen studerades i x‑ och MR-diagram och små skiftningar i EWMA-diagram. Vid studie av dessa diagram kunde såväl alarm som trender identifieras och processen ansågs därmed vara instabil. Dessa företeelser antogs vara resultatet av urskiljbar variation, orsakad av kontrollerbara faktorer. I den efterföljande processutvärderingen kom därför arbetet att fokusera på identifikation av dessa faktorer. För denna identifikation sattes en fokusgrupp samman, vilka listade möjliga faktorer i ett Ishikawadiagram utifrån de sju M:en.

Uppkomna faktorer testades utifrån främst tre olika metoder; tvåfaktorförsök, enfaktorförsök och loggning. Faktorförsöken genomfördes genom målning av testplåtar, där skillnad i färgskikttjocklek beroende på vald faktornivå studerades. Loggning av faktorer utfördes parallellt med produktion, varpå dessa värden ställdes mot registrerade värden på färgskikttjockleken i en ANOVA- eller korrelationsanalys. Utifrån resultatet av dessa tester delades undersökta faktorer in i Signifikanta, Delvis signifikanta, Eventuellt signifikanta och Ej signifikanta. De faktorer som ansågs vara signifikanta är Fluidisering och Pulverbatch, vilka kan vara bidragande orsaker bakom den urskiljbara variationen som identifierats. Fluidiseringen har periodvis varit undermålig i ett av de pulverkök som förser robotarna med pulver, något som kan förklara uppvisad låg korrelation mellan robotarna och den höga nivå av autokorrelation som skådats. Vid ett test med fyra olika säckar från två olika batcher sågs även en varierad batchhärkomst påverka resultatet, med en skillnad i färgskikttjocklek på mellan 10 och 20 µm på testplåten. De Delvis signifikanta faktorerna, så som injektorplugg, elektrod och munstycken, kan påverka utfallet vid en hög grad av förslitning och troligen fås störst inverkan i de fall då dessa samverkar. Genom att utföra rekommenderade åtgärder beträffande de signifikanta faktorerna, med avseende på att minska variationen, kan processen åter studeras och utredas. Beroende på utfall kan en stabil process förbättras och i annat fall söks nya källor till variation.

 


 

The statistical quality tool Statistical Process Control (SPC) was introduced at BT Products AB in Mjölby following the process of SPC implementation. The current process is a powder coating process where parts for powered trucks are painted black. The electrostatic powder coating is performed by four automatized robots and the desired layer thickness is 70 µm. The process has been evaluated from a quality characteristic, specified as the layer thickness, and special causes behind variation were identified. Data has been collected continuously from the process by measuring objects in the production, using a self-developed measurement template to receive comparable data. Statistical tools have been used to evaluate whether the data were reliable or not. A normal probability plot confirmed that the observations were normally distributed and a scatter plot established randomness. Autocorrelation was detected and the data had to be transformed, why the independent and reliable residuals were used in the subsequent analysis. Control charts were used to study the process over time, where individual x- and MR-charts detected large shifts in the process, while EWMA-charts detected small shifts. Alarms, trends and abnormal patterns were identified in these control charts, which led to the conclusion that the process could be considered out of control. The special causes behind this variation were assumed to stem from controllable factors and the work was therefore focused on identifying these special causes.

Factors were listed in an Ishikawadiagram by a focus group and tested using mainly three different methods. Design of experiments was used to test a two factorial design, and single factors were tested by one-factor-tests. A sheet metal was painted in both test methods and the difference in layer thickness, dependent on chosen level of the factor, was studied. Other factors were logged parallel to the production. Additional observations were compared to the registered layer thickness on parts and the relation analysed using ANOVA- or correlation analyses. Examined factors from these tests were divided and categorized into Significant, Partially significant, Possibly significant and Not significant. Fluidisation and powder batch were identified as significant factors and thereby possible causes behind the identified variation. The fluidisation in one of the powder containers has at times been misbegotten, something that can explain the high level of autocorrelation and the low level of correlation between the robots. When testing the batches, four sacks from two different batches were used and a large difference in layer thickness was observed depending on powder origin. A high degree of wear of the partially significant factors, as injector nozzle, electrode and gun nozzle, could affect the result, but they likely have the largest impact when collaborating. By performing recommended actions, in an attempt to reduce the variation on the basis of the significant factors, the process once again can be studied and evaluated. Depending on the result, a stable process can be improved, alternatively, new sources behind variation identified.

 

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Bathelt, Jens. "Entwicklungsmethodik für SPS-gesteuerte mechatronische Systeme /." Düsseldorf : VDI-Verl, 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=015605073&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Liu, Jiayan. "Database design of Ohio SPS test." Ohio : Ohio University, 1997. http://www.ohiolink.edu/etd/view.cgi?ohiou1177094710.

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Byl, Céline. "Synthèse et caractérisation de nanocomposites à base de ZnO pour des applications thermoélectriques." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112045/document.

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Ce travail de thèse a pour objectif l’obtention de nanocomposites denses ZnO/SiO2 afin d’améliorer les propriétés thermoélectriques de l’oxyde de zinc. Ce manuscrit décrit différents aspects de l’élaboration tant en terme de synthèse que de densification de nanocomposites ZnO/SiO2 ainsi que leur caractérisation. Afin d’obtenir des nanoparticules en grande quantité, de bonne cristallinité et de taille inférieure à 10 nm, l’optimisation d’une synthèse par voie polyol en jouant sur différents paramètres (pH, température, taux d’hydrolyse, solvant, surfactant) a été réalisée. Nous avons pu mettre en évidence l’intérêt d’utiliser l’acide benzoïque comme surfactant pour éviter l’agglomération de ces nanoparticules. La modification de surface des nanoparticules par de la silice a ensuite été explorée. Cette modification a été réalisée par une méthode classique, le procédé Stöber, ainsi que par une technique moins conventionnelle, l’ALD. Une étude approfondie de la densification par SPS à la fois de l’oxyde de zinc et des nanoparticules recouvertes a été décrite. L’influence de la couche amorphe déposée sur la croissance cristalline des nanoparticules a été démontrée. Nous avons par ailleurs pu mettre en exergue une pollution importante par du carbone lors de la densification des composés entrainant des modifications importantes des propriétés de transport. Le résultat majeur de cette thèse est la mise en évidence de clusters d’oxyde de zinc fortement dopés dans ces composés qui remet en question les mécanismes de transport dans le ZnO
This study is focusing on the synthesis of nanocomposites of Al doped ZnO/SiO2 with high density in order to increase the thermoelectric properties of ZnO. This work describes the optimization of the synthesis by investigating the effect of different experimental parameters (temperature, type of surfactant, degree of hydrolysis, nature of the solvent, pH) to obtain large amount of nanoparticles with size below 10 nm and good crystallinity. We have identified that using benzoic acid as surfactant could avoid the formation of particle aggregates. The modification of nanoparticles surfaces with SiO2 was investigated by using two methods the Stöber process and ALD. The possibility of ZnO and nanocomposite powder densification by spark plasma sintering was also tackled as well as the role played by the main parameters of the method (applied pressure and the best moment of its application, heating rate). The influence of the amorphous shell on the limiting grain growth during the sintering was demonstrated. Furthermore, a carbon accumulation which modifies the thermoelectric properties in the densified pellet was demonstrated. The source of it was assigned in part to the densification process. The most significant result of this study was the finding of the presence of ZnO clusters strongly doped wich could have fundamental implications as it may reopen the discussion on the transport mechanism in ZnO
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Raimondi, Erica. "More Qualifications and Less Dropout? From Compulsory Schooling to Vocational Education in Italy." Doctoral thesis, Università degli studi di Trento, 2016. https://hdl.handle.net/11572/368112.

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Education continues to define social positions and reproduce social inequalities. Deficiencies in education may lead to disadvantages at both the individual and societal levels, and lower qualifications are usually obtained by already disadvantaged youths. One of the biggest problems in this regard is dropping out (also named early school-leaving)—i.e. young people who leave the education system before completing upper secondary school. Many interventions have attempted to prevent or discourage students from dropping out of school. Among them there are two straightforward systemic policies: raising the age of compulsory schooling and creating alternative tracks for completing education. They aimed to achieve the same goal—reducing dropping out—but using different strategies. Despite the diffusion of these reforms, it is not clear to what extent one or both may succeed in their goal. Both of these policies were actively pursued in Italy in a less than five-year period—from 1999 to 2003. In 1999, the so-called Berlinguer reform extended compulsory schooling from age 14 to 15, and in 2003 the State-Regions Congress introduced experimental vocational and training programmes (IFP). These intensive changes allow for the comparison of these two interventions in a single context one after the other, but no extensive studies have been made so far. The dissertation seeks to address this lacuna by making the best use of the available data. The broad question of the thesis is whether the extension of compulsory schooling and/or the creation of new vocational and training programmes have modified students’ (and families’) dropping-out decisions. To answer, propensity score matching, counterfactual time series, segmented regression, region fixed effect and individual multilevel cross-classified logistic analyses are used. The results are framed in the theoretical debates about education: its roles, its expansion, its contribute to (in)equality and its policies.
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Guzzo, Falci Paula. "Illiberal Secularism: A Critical Approach to the Study of Social and Religious Governance in Liberal Democracies." Doctoral thesis, Università degli studi di Trento, 2018. https://hdl.handle.net/11572/368572.

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Taking note of the emergence of illiberal forms of governance across Western Europe, a liberal and democratic region, this thesis endeavors to unravel one particular manifestation of this tendency, illiberal secularism. Specifically, it asks how secularism has been discursively (trans)formed in political contexts so as to allow for the emergence of illiberal forms of social and religious governance. To address this question, this thesis analyzes the discursive enactment of ideological secularism by Italian state actors in three cases—the Crucifix, the Burqa, and the Charter cases. Building on critical and discursive perspectives, this thesis argues that secularism is an ideology that shapes thinking and action and provides a conceptualization of, and an answer to, the problem of diversity. Thus, it proposes to study secularism as a political category that works as a stake in, and as a means through which contemporary contests over religion and diversity are conducted. In methodological terms, these considerations lead to a combined analytical endeavor, which focuses on both the conceptual grammar of secularism and the discursive practices through which state actors (re)construct this ideological formation. Conducting conceptual and critical discourse analyses, this thesis reveals the argumentative structures and the main ideational and relational assumptions of Italian state actors’ discourses. It demonstrates that, in all three cases, these actors revise secular–religious demarcations in ways that expand the secular power of the state over the religious realm and, moreover, allow for the revision of liberal entitlements and for the resetting of the boundaries that define the political community. Notably, this thesis finds that it is through the secularization of Christianity, the culturalization of liberalism, and the othering of Muslims that some state actors reconcile secularism and illiberalism, thereby promoting practices that restrict and violate important liberal values and achievements, such as religious freedom and political unity.
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Winkels, Adam. "Lepton pair production at the CERN SPS." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=32496.

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We interpret theoretically electron pair data observed in Pb(158 AGeV)-Au collisions at the CERN SPS by considering the system as an evolving fireball with parameters fit to experimental observables. Dilepton production in the QGP phase is found via standard finite temperature field theory techniques where annihilating quarks have thermally generated effective masses. After the phase transition, contributions from rho and omega meson decays are found via from experimentally determined forward scattering amplitudes which account for the effects of emission from a medium with finite temperature and density. All results are folded with a model which considers bias created by the CERES detector's acceptance. Our calculations agree well with existing data dilepton production at low and intermediate invariant masses.
Nous interprétons les données expérimentales sur les paires de leptons mesurées dans les collisions Pb-Au à 158 AGeV, au SPS du CERN. Nous traitons l'évolution du système hadronique en considérant une modélisation thermodynamique ajustée aux observables asymptotiques. La production de leptons dans la phase du plasma quark-gluon est obtenue avec les techniques reconnues de la théorie des champs à température finie, où les quarks ont des masses thermiques non-nulles. Après la transition de phase, les contributions des désintégrations des mésons rho et omega sont évaluées en partant des amplitudes de diffusion vers l'avant, ce qui tient compte des effets de milieu. Tous nos résultats sont filtrés par l'acceptance du détecteur CERES. Nos calculs sont en accord avec les données mesurées sur la production de dileptons de petite et moyenne masses invariantes.
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Raimondi, Erica. "More Qualifications and Less Dropout? From Compulsory Schooling to Vocational Education in Italy." Doctoral thesis, University of Trento, 2016. http://eprints-phd.biblio.unitn.it/1781/2/Doctoral_Thesis_Erica_Raimondi.pdf.

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Education continues to define social positions and reproduce social inequalities. Deficiencies in education may lead to disadvantages at both the individual and societal levels, and lower qualifications are usually obtained by already disadvantaged youths. One of the biggest problems in this regard is dropping out (also named early school-leaving)—i.e. young people who leave the education system before completing upper secondary school. Many interventions have attempted to prevent or discourage students from dropping out of school. Among them there are two straightforward systemic policies: raising the age of compulsory schooling and creating alternative tracks for completing education. They aimed to achieve the same goal—reducing dropping out—but using different strategies. Despite the diffusion of these reforms, it is not clear to what extent one or both may succeed in their goal. Both of these policies were actively pursued in Italy in a less than five-year period—from 1999 to 2003. In 1999, the so-called Berlinguer reform extended compulsory schooling from age 14 to 15, and in 2003 the State-Regions Congress introduced experimental vocational and training programmes (IFP). These intensive changes allow for the comparison of these two interventions in a single context one after the other, but no extensive studies have been made so far. The dissertation seeks to address this lacuna by making the best use of the available data. The broad question of the thesis is whether the extension of compulsory schooling and/or the creation of new vocational and training programmes have modified students’ (and families’) dropping-out decisions. To answer, propensity score matching, counterfactual time series, segmented regression, region fixed effect and individual multilevel cross-classified logistic analyses are used. The results are framed in the theoretical debates about education: its roles, its expansion, its contribute to (in)equality and its policies.
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Books on the topic "SPS"

1

Kongres, Socijalistička partija Srbije. Osnove programa SPS: Nacrt : Statut SPS : nacrt. Beograd: Socijalistička partija Srbije, 1992.

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Wellenreuther, Günter, and Dieter Zastrow. Speicherprogrammierte Steuerungen SPS. Wiesbaden: Vieweg+Teubner Verlag, 1988. http://dx.doi.org/10.1007/978-3-322-86651-6.

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Wellenreuther, Günter, and Dieter Zastrow. Lösungsbuch Speicherprogrammierte Steuerungen SPS. Wiesbaden: Vieweg+Teubner Verlag, 1988. http://dx.doi.org/10.1007/978-3-322-90929-9.

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Susavidge, Mary Ann. Columbia SPS: Insurance management. 2nd ed. Malvern, Pennsylvania: The Institutes, 2020.

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Center, Turner-Fairbank Highway Research, ed. Pavement treatment effectiveness, 1995 SPS-3 and SPS-4 site evaluations, national report. McLean, VA: U.S. Dept. of Transportation, Federal Highway Administration, Research and Development, Turner-Fairbank Highway Research Center, 1997.

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Ullah, Khan Amir, Saqib Mohammed, Bazaar Chintan (Organization : New Delhi, India), International Development Enterprises (India), and Rajiv Gandhi Institute of Contemporary Studies., eds. Hand-book on SPS regulations. New Delhi: Bazaar Chintan, 2005.

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Wellenreuther, Günter, and Dieter Zastrow. Automatisieren mit SPS — Theorie und Praxis. Wiesbaden: Vieweg+Teubner, 2008. http://dx.doi.org/10.1007/978-3-8348-9018-4.

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Wellenreuther, Günter, and Dieter Zastrow. Automatisieren mit SPS - Übersichten und Übungsaufgaben. Wiesbaden: Springer Fachmedien Wiesbaden, 2016. http://dx.doi.org/10.1007/978-3-658-11200-4.

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John, Karl-Heinz, and Michael Tiegelkamp. SPS-Programmierung mit IEC 1131-3. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-662-13024-7.

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Wellenreuther, Günter, and Dieter Zastrow. Automatisieren mit SPS Übersichten und Übungsaufgaben. Wiesbaden: Vieweg+Teubner Verlag, 2005. http://dx.doi.org/10.1007/978-3-322-92831-3.

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Book chapters on the topic "SPS"

1

Orlowski, Peter F. "SPS-Automatisierung." In Praktische Elektronik, 265–90. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-39005-0_10.

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Karaali, Cihat. "Speicherprogrammierbare (SPS)-Steuerungen." In Grundlagen der Steuerungstechnik, 157–79. Wiesbaden: Springer Fachmedien Wiesbaden, 2018. http://dx.doi.org/10.1007/978-3-658-16137-8_5.

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Adam, Hans-Joachim, and Mathias Adam. "Schaltnetze mit SPS." In SPS-Programmierung in Anweisungsliste nach IEC 61131-3, 71–89. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-46716-9_5.

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Adam, Hans-Joachim, and Mathias Adam. "Zeitfunktionen mit SPS." In SPS-Programmierung in Anweisungsliste nach IEC 61131-3, 109–22. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-46716-9_7.

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Adam, Hans-Joachim, and Mathias Adam. "Zähler mit SPS." In SPS-Programmierung in Anweisungsliste nach IEC 61131-3, 123–39. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-46716-9_8.

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Küfner, Hans-Jürgen. "Speicherprogrammierbare Steuerungen (SPS)." In Das Techniker Handbuch, 1655–86. Wiesbaden: Vieweg+Teubner Verlag, 1995. http://dx.doi.org/10.1007/978-3-322-96935-4_17.

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Küfner, Hans-Jürgen. "Speicherprogrammierbare Steuerungen (SPS)." In Das Techniker Handbuch, 1655–94. Wiesbaden: Vieweg+Teubner Verlag, 1999. http://dx.doi.org/10.1007/978-3-322-96955-2_17.

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John, Karl-Heinz, and Michael Tiegelkamp. "Standardisierte SPS-Funktionalität." In SPS-Programmierung mit IEC 1131-3, 203–32. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-662-13024-7_5.

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John, Karl-Heinz, and Michael Tiegelkamp. "Moderne SPS-Konfiguration." In SPS-Programmierung mit IEC 1131-3, 233–49. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-662-13024-7_6.

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John, Karl-Heinz, and Michael Tiegelkamp. "Innovative SPS-Programmiersysteme." In SPS-Programmierung mit IEC 1131-3, 251–92. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-662-13024-7_7.

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Conference papers on the topic "SPS"

1

Taherian, Salman, and Jean Bacon. "SPS." In the 5th international workshop. New York, New York, USA: ACM Press, 2007. http://dx.doi.org/10.1145/1376866.1376870.

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Trattner, Christoph, Denis Parra, Peter Brusilovsky, and Leandro Marinho. "SPS'15." In SIGIR '15: The 38th International ACM SIGIR conference on research and development in Information Retrieval. New York, NY, USA: ACM, 2015. http://dx.doi.org/10.1145/2766462.2767859.

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"Future SPS conferences." In ICASSP 2011 - 2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2011. http://dx.doi.org/10.1109/icassp.2011.5947736.

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"Future SPS conferences." In 2009 IEEE International Conference on Acoustics, Speech and Signal Processing. IEEE, 2009. http://dx.doi.org/10.1109/icassp.2009.4959503.

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"Future SPS conferences." In ICASSP 2013 - 2013 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2013. http://dx.doi.org/10.1109/icassp.2013.6637595.

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"Future SPS conferences." In ICASSP 2012 - 2012 IEEE International Conference on Acoustics, Speech and Signal Processing. IEEE, 2012. http://dx.doi.org/10.1109/icassp.2012.6289161.

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"SPS 2021 Committee." In 2021 IEEE International Conference on Autonomic Computing and Self-Organizing Systems (ACSOS). IEEE, 2021. http://dx.doi.org/10.1109/acsos52086.2021.00018.

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El-Tahan, H., and M. S. El-Tahan. "Ship Predictor System (SPS)." In CCECE '97. Canadian Conference on Electrical and Computer Engineering. Engineering Innovation: Voyage of Discovery. Conference Proceedings. IEEE, 1997. http://dx.doi.org/10.1109/ccece.1997.608273.

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Dhanasree, K., and C. Shobabindu. "SPS: Distributed view indexing." In 2015 IEEE International Conference on Computational Intelligence and Computing Research (ICCIC). IEEE, 2015. http://dx.doi.org/10.1109/iccic.2015.7435663.

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Bajaria, Hans J., and Richard P. Copp. "Statistical Problem Solving (SPS)." In SAE International Congress and Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1987. http://dx.doi.org/10.4271/870274.

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Reports on the topic "SPS"

1

Taya, Minoru. Spark Plasma Sintering (SPS) for Nanostructured Smart Materials. Fort Belvoir, VA: Defense Technical Information Center, February 2006. http://dx.doi.org/10.21236/ada443838.

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Prelec, Krsto. Acceleration of Pb Ions in the CERN SPS. Office of Scientific and Technical Information (OSTI), August 1988. http://dx.doi.org/10.2172/1119135.

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Cesaratto, J. M., and C. H. Rivetta. SPS High Bandwidth Transverse Feedback System - MD, Nov. 2012. Office of Scientific and Technical Information (OSTI), May 2014. http://dx.doi.org/10.2172/1131459.

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Nissen, Mark E. SPS and Beyond: Innovating Acquisition Through Intelligent Electronic Contracting. Fort Belvoir, VA: Defense Technical Information Center, January 1999. http://dx.doi.org/10.21236/ada371948.

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Cesaratto, J. M. SPS High Bandwidth Transverse Feedback System MD, Feb 6, 2013. Office of Scientific and Technical Information (OSTI), May 2014. http://dx.doi.org/10.2172/1131435.

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Cesaratto, J. M. SPS High Bandwidth Transverse Feedback System MD, Feb 5, 2013. Office of Scientific and Technical Information (OSTI), May 2014. http://dx.doi.org/10.2172/1131436.

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Cesaratto, J. M. SPS High Bandwidth Transverse Feedback System MD, Feb 3, 2013. Office of Scientific and Technical Information (OSTI), May 2014. http://dx.doi.org/10.2172/1131452.

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Cesaratto, John. SPS High Bandwidth Transverse Feedback System MD, Feb 2, 2013. Office of Scientific and Technical Information (OSTI), May 2014. http://dx.doi.org/10.2172/1131453.

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Cesaratto, J. M. SPS High Bandwidth Transverse Feedback System MD, Jan 30 2013. Office of Scientific and Technical Information (OSTI), May 2014. http://dx.doi.org/10.2172/1131454.

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Cesaratto, John. SPS High Bandwidth Transverse Feedback System MD, Jan 29, 2013. Office of Scientific and Technical Information (OSTI), May 2014. http://dx.doi.org/10.2172/1131455.

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