Bibliografie tematiche / SOA

Indice

Articoli di riviste
Tesi
Libri
Capitoli di libri
Atti di convegni
Rapporti di organizzazioni

Letteratura scientifica selezionata sul tema "SOA"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 8 giugno 2024

Cita una fonte nei formati APA, MLA, Chicago, Harvard e in molti altri stili

Scegli il tipo di fonte:

Consulta la lista di attuali articoli, libri, tesi, atti di convegni e altre fonti scientifiche attinenti al tema "SOA".

Accanto a ogni fonte nell'elenco di riferimenti c'è un pulsante "Aggiungi alla bibliografia". Premilo e genereremo automaticamente la citazione bibliografica dell'opera scelta nello stile citazionale di cui hai bisogno: APA, MLA, Harvard, Chicago, Vancouver ecc.

Puoi anche scaricare il testo completo della pubblicazione scientifica nel formato .pdf e leggere online l'abstract (il sommario) dell'opera se è presente nei metadati.

Articoli di riviste sul tema "SOA"

Pagel, Peter. "SOA? SOA!" Wirtschaftsinformatik und Management 1, n. 2 (maggio 2009): 3. http://dx.doi.org/10.1007/bf03248180.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Baghdadi, Youcef. "SOA Maturity Models: Guidance to Realize SOA". International Journal of Computer and Communication Engineering 3, n. 5 (2014): 372–78. http://dx.doi.org/10.7763/ijcce.2014.v3.352.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Liu, Shijie, Long Jia, Yongfu Xu, Narcisse T. Tsona, Shuangshuang Ge e Lin Du. "Photooxidation of cyclohexene in the presence of SO2: SOA yield and chemical composition". Atmospheric Chemistry and Physics 17, n. 21 (9 novembre 2017): 13329–43. http://dx.doi.org/10.5194/acp-17-13329-2017.

Testo completo

Abstract (sommario):

Abstract. Secondary organic aerosol (SOA) formation from a cyclohexene ∕ NOx system with various SO2 concentrations under UV light was investigated to study the effects of cyclic alkenes on the atmospheric environment in polluted urban areas. A clear decrease at first and then an increase in the SOA yield was found with increasing SO2 concentrations. The lowest SOA yield was obtained when the initial SO2 concentration was in the range of 30–40 ppb, while higher SOA yield compared to that without SO2 could not be obtained until the initial SO2 concentration was higher than 85 ppb. The decreasing SOA yield might be due to the fact that the promoting effect of acid-catalysed reactions on SOA formation was less important than the inhibiting effect of decreasing OH concentration at low initial SO2 concentrations, caused by the competition reactions of OH with SO2 and cyclohexene. The competitive reaction was an important factor for SOA yield and it should not be neglected in photooxidation reactions. The composition of organic compounds in SOA was measured using several complementary techniques including Fourier transform infrared (FTIR) spectroscopy, ion chromatography (IC), and Exactive Plus Orbitrap mass spectrometer equipped with electrospray interface (ESI). We present new evidence that organosulfates were produced from the photooxidation of cyclohexene in the presence of SO2.

Gli stili APA, Harvard, Vancouver, ISO e altri

Liu, Changgeng, Tianzeng Chen, Yongchun Liu, Jun Liu, Hong He e Peng Zhang. "Enhancement of secondary organic aerosol formation and its oxidation state by SO2 during photooxidation of 2-methoxyphenol". Atmospheric Chemistry and Physics 19, n. 4 (1 marzo 2019): 2687–700. http://dx.doi.org/10.5194/acp-19-2687-2019.

Testo completo

Abstract (sommario):

Abstract. 2-Methoxyphenol (guaiacol) is derived from the lignin pyrolysis and taken as a potential tracer for wood smoke emissions. In this work, the effect of SO2 at atmospheric levels (0–56 ppbv) on secondary organic aerosol (SOA) formation and its oxidation state during guaiacol photooxidation was investigated in the presence of various inorganic seed particles (i.e., NaCl and (NH4)2SO4). Without SO2 and seed particles, SOA yields ranged from (9.46±1.71) % to (26.37±2.83) % and could be well expressed by a one-product model. According to the ratio of the average gas-particle partitioning timescale (τ‾g-p) over the course of the experiment to the vapor wall deposition timescale (τg−w), the determined SOA yields were underestimated by a factor of ∼2. The presence of SO2 resulted in enhancing SOA yield by 14.04 %–23.65 %. With (NH4)2SO4 and NaCl seed particles, SOA yield was enhanced by 23.07 % and 29.57 %, respectively, which further increased significantly to 29.78 %–53.43 % in the presence of SO2, suggesting that SO2 and seed particles have a synergetic contribution to SOA formation. The decreasing trend of the τ‾g-p/τg-w ratio in the presence of seed particles and SO2 suggested that more SOA-forming vapors partitioned into the particle phase, consequently increasing SOA yields. It should be noted that SO2 was found to be in favor of increasing the carbon oxidation state (OSC) of SOA, indicating that the functionalization or the partitioning of highly oxidized products into particles should be more dominant than the oligomerization. In addition, the average N∕C ratio of SOA was 0.037, which revealed that NOx participated in the photooxidation process, consequently leading to the formation of organic N-containing compounds. The experimental results demonstrate the importance of SO2 on the formation processes of SOA and organic S-containing compounds and are also helpful to further understand SOA formation from the atmospheric photooxidation of guaiacol and its subsequent impacts on air quality and climate.

Gli stili APA, Harvard, Vancouver, ISO e altri

Zhang, Wenyu, Weigang Wang, Junling Li, Chao Peng, Kun Li, Li Zhou, Bo Shi, Yan Chen, Mingyuan Liu e Maofa Ge. "Effects of SO2 on optical properties of secondary organic aerosol generated from photooxidation of toluene under different relative humidity conditions". Atmospheric Chemistry and Physics 20, n. 7 (17 aprile 2020): 4477–92. http://dx.doi.org/10.5194/acp-20-4477-2020.

Testo completo

Abstract (sommario):

Abstract. Secondary organic aerosol (SOA) has great impacts on air quality, climate change and human health. The composition and physicochemical properties of SOA differ greatly because they form under different atmospheric conditions and from various precursors as well as differing oxidation. In this work, photooxidation experiments of toluene were performed under four conditions (dry, dry with SO2, wet and wet with SO2) to investigate the effect of SO2 under different relative humidities on the composition and optical properties of SOA at wavelengths of 375 and 532 nm. According to our results, the increase in humidity enhances not only light absorption but also the scattering property of the SOA. Oligomers formed through multiphase reactions might be the reason for this phenomenon. Adding SO2 slightly lowers the real part of the complex refractive index, RI(n), of toluene-derived SOA (RI(n)dry,SO2<RI(n)dry, RI(n)wet,SO2<RI(n)wet), which might be a result of the partitioning of low-oxidation-state products. The imaginary part of the complex refractive index, RI(k), is enhanced under dry conditions with SO2 compared to that of only dry conditions, which might be due to acid-catalyzed aldol condensation reactions. Wet conditions with SO2 shows the combined effect of SO2 and humidity. The extinction properties of toluene-derived SOA under wet conditions with SO2 increased by approximately 30 % compared to that of toluene-derived SOA formed under dry conditions. Our results suggest that various atmospheric conditions will affect the composition and optical proprieties of SOA, which has significant implications for evaluating the impacts of SOA on the rapid formation of regional haze, global radiative balance and climate change.

Gli stili APA, Harvard, Vancouver, ISO e altri

Matitaputty, Jenny Koce. "Totem: Soa and Its Role in the Indigenous Peoples Lives of Negeri Hutumuri - Maluku". Society 9, n. 2 (31 dicembre 2021): 429–46. http://dx.doi.org/10.33019/society.v9i2.358.

Testo completo

Abstract (sommario):

Soa is a combination of several genealogically territorial eyes of the house. Each Soa usually has a symbol in the form of Totem, which is the identity of each Soa. Soa is still maintained until now. Even every symbol or Totem is still present in implementing traditional ceremonies. This study aimed to discover Soa and its role based on Totem in Negeri Hutumuri, South Leitimur Sub-district, Ambon City. This research is qualitative. The data source was obtained by purposive sampling. The Soa heads and traditional elders were used as informants. Data collection techniques through interviews, participatory observation, and documentation. The results of the study show: 1) Soa in the life of the people of Negeri Hutumuri consists of 5 Soa, namely Soa Pattihutung, Soa Mokihutung, Soa Tutupasar, Soa Lapaut, and Soa Puasel. 2) The role of each Soa is based on the Totem: 1. Soa Pattihutung, with the symbol of the Soa pigeon is role as an honest leader in leadership (King); 2. Soa Mokihutung symbolizes the Soa Mangole bird in charge of maintaining maritime security (Kewang sea/marine police). 3. Soa Tutupasar with the symbol of Soa, namely Soa-Soa, in charge of maintaining forest security (Kewang land/forest police). 4. Soa Lapaut, with the symbol of the Soa snake, is in charge of maintaining security and order (police/soldiers). 5. Soa Puasel, with the symbol of the Soa frog maintaining the cleanliness of water and art in the Negeri Hutumuri.

Gli stili APA, Harvard, Vancouver, ISO e altri

Zhao, Defeng, Sebastian H. Schmitt, Mingjin Wang, Ismail-Hakki Acir, Ralf Tillmann, Zhaofeng Tan, Anna Novelli et al. "Effects of NOx and SO2 on the secondary organic aerosol formation from photooxidation of α-pinene and limonene". Atmospheric Chemistry and Physics 18, n. 3 (5 febbraio 2018): 1611–28. http://dx.doi.org/10.5194/acp-18-1611-2018.

Testo completo

Abstract (sommario):

Abstract. Anthropogenic emissions such as NOx and SO2 influence the biogenic secondary organic aerosol (SOA) formation, but detailed mechanisms and effects are still elusive. We studied the effects of NOx and SO2 on the SOA formation from the photooxidation of α-pinene and limonene at ambient relevant NOx and SO2 concentrations (NOx: < 1to 20 ppb, SO2: < 0.05 to 15 ppb). In these experiments, monoterpene oxidation was dominated by OH oxidation. We found that SO2 induced nucleation and enhanced SOA mass formation. NOx strongly suppressed not only new particle formation but also SOA mass yield. However, in the presence of SO2 which induced a high number concentration of particles after oxidation to H2SO4, the suppression of the mass yield of SOA by NOx was completely or partly compensated for. This indicates that the suppression of SOA yield by NOx was largely due to the suppressed new particle formation, leading to a lack of particle surface for the organics to condense on and thus a significant influence of vapor wall loss on SOA mass yield. By compensating for the suppressing effect on nucleation of NOx, SO2 also compensated for the suppressing effect on SOA yield. Aerosol mass spectrometer data show that increasing NOx enhanced nitrate formation. The majority of the nitrate was organic nitrate (57–77 %), even in low-NOx conditions (< ∼ 1 ppb). Organic nitrate contributed 7–26 % of total organics assuming a molecular weight of 200 g mol−1. SOA from α-pinene photooxidation at high NOx had a generally lower hydrogen to carbon ratio (H ∕ C), compared to low NOx. The NOx dependence of the chemical composition can be attributed to the NOx dependence of the branching ratio of the RO2 loss reactions, leading to a lower fraction of organic hydroperoxides and higher fractions of organic nitrates at high NOx. While NOx suppressed new particle formation and SOA mass formation, SO2 can compensate for such effects, and the combining effect of SO2 and NOx may have an important influence on SOA formation affected by interactions of biogenic volatile organic compounds (VOCs) with anthropogenic emissions.

Gli stili APA, Harvard, Vancouver, ISO e altri

Marais, E. A., D. J. Jacob, J. L. Jimenez, P. Campuzano-Jost, D. A. Day, W. Hu, J. Krechmer et al. "Aqueous-phase mechanism for secondary organic aerosol formation from isoprene: application to the Southeast United States and co-benefit of SO2 emission controls". Atmospheric Chemistry and Physics Discussions 15, n. 21 (13 novembre 2015): 32005–47. http://dx.doi.org/10.5194/acpd-15-32005-2015.

Testo completo

Abstract (sommario):

Abstract. Isoprene emitted by vegetation is an important precursor of secondary organic aerosol (SOA), but the mechanism and yields are uncertain. Aerosol is prevailingly aqueous under the humid conditions typical of isoprene-emitting regions. Here we develop an aqueous-phase mechanism for isoprene SOA formation coupled to a detailed gas-phase isoprene oxidation scheme. The mechanism is based on aerosol reactive uptake probabilities (γ) for water-soluble isoprene oxidation products, including sensitivity to aerosol acidity and nucleophile concentrations. We apply this mechanism to simulation of aircraft (SEAC4RS) and ground-based (SOAS) observations over the Southeast US in summer 2013 using the GEOS-Chem chemical transport model. Emissions of nitrogen oxides (NOx ≡ NO + NO2) over the Southeast US are such that the peroxy radicals produced from isoprene oxidation (ISOPO2) react significantly with both NO (high-NOx pathway) and HO2 (low-NOx pathway), leading to different suites of isoprene SOA precursors. We find a mean SOA mass yield of 3.3 % from isoprene oxidation, consistent with the observed relationship of OA and formaldehyde (a product of isoprene oxidation). The yield is mainly contributed by two immediate gas-phase precursors, isoprene epoxydiols (IEPOX, 58 % of isoprene SOA) from the low-NOx pathway and glyoxal (28 %) from both low- and high-NOx pathways. This speciation is consistent with observations of IEPOX SOA from SOAS and SEAC4RS. Observations show a strong relationship between IEPOX SOA and sulfate aerosol that we explain as due to the indirect effect of sulfate on aerosol acidity and volume, rather than a direct mechanistic role for sulfate. Isoprene SOA concentrations increase as NOx emissions decrease (favoring the low-NOx pathway for isoprene oxidation), but decrease as SO2 emissions decrease (due to the effect of sulfate on aerosol acidity and volume). The US EPA projects 2013–2025 decreases in anthropogenic emissions of 34 % for NOx (leading to 7 % increase in isoprene SOA) and 48 % for SO2 (35 % decrease in isoprene SOA). The combined projected decreases in NOx and SO2 emissions reduce isoprene SOA yields from 3.3 to 2.3 %. Reducing SO2 emissions decreases sulfate and isoprene SOA by a similar magnitude, representing a factor of 2 co-benefit for PM2.5 from SO2 emission controls.

Gli stili APA, Harvard, Vancouver, ISO e altri

Marais, E. A., D. J. Jacob, J. L. Jimenez, P. Campuzano-Jost, D. A. Day, W. Hu, J. Krechmer et al. "Aqueous-phase mechanism for secondary organic aerosol formation from isoprene: application to the southeast United States and co-benefit of SO2 emission controls". Atmospheric Chemistry and Physics 16, n. 3 (11 febbraio 2016): 1603–18. http://dx.doi.org/10.5194/acp-16-1603-2016.

Testo completo

Abstract (sommario):

Abstract. Isoprene emitted by vegetation is an important precursor of secondary organic aerosol (SOA), but the mechanism and yields are uncertain. Aerosol is prevailingly aqueous under the humid conditions typical of isoprene-emitting regions. Here we develop an aqueous-phase mechanism for isoprene SOA formation coupled to a detailed gas-phase isoprene oxidation scheme. The mechanism is based on aerosol reactive uptake coefficients (γ) for water-soluble isoprene oxidation products, including sensitivity to aerosol acidity and nucleophile concentrations. We apply this mechanism to simulation of aircraft (SEAC4RS) and ground-based (SOAS) observations over the southeast US in summer 2013 using the GEOS-Chem chemical transport model. Emissions of nitrogen oxides (NOx ≡ NO + NO2) over the southeast US are such that the peroxy radicals produced from isoprene oxidation (ISOPO2) react significantly with both NO (high-NOx pathway) and HO2 (low-NOx pathway), leading to different suites of isoprene SOA precursors. We find a mean SOA mass yield of 3.3 % from isoprene oxidation, consistent with the observed relationship of total fine organic aerosol (OA) and formaldehyde (a product of isoprene oxidation). Isoprene SOA production is mainly contributed by two immediate gas-phase precursors, isoprene epoxydiols (IEPOX, 58 % of isoprene SOA) from the low-NOx pathway and glyoxal (28 %) from both low- and high-NOx pathways. This speciation is consistent with observations of IEPOX SOA from SOAS and SEAC4RS. Observations show a strong relationship between IEPOX SOA and sulfate aerosol that we explain as due to the effect of sulfate on aerosol acidity and volume. Isoprene SOA concentrations increase as NOx emissions decrease (favoring the low-NOx pathway for isoprene oxidation), but decrease more strongly as SO2 emissions decrease (due to the effect of sulfate on aerosol acidity and volume). The US Environmental Protection Agency (EPA) projects 2013–2025 decreases in anthropogenic emissions of 34 % for NOx (leading to a 7 % increase in isoprene SOA) and 48 % for SO2 (35 % decrease in isoprene SOA). Reducing SO2 emissions decreases sulfate and isoprene SOA by a similar magnitude, representing a factor of 2 co-benefit for PM2.5 from SO2 emission controls.

Gli stili APA, Harvard, Vancouver, ISO e altri

Lin, Y. H., E. M. Knipping, E. S. Edgerton, S. L. Shaw e J. D. Surratt. "Investigating the influences of SO2 and NH3 levels on isoprene-derived secondary organic aerosol formation using conditional sampling approaches". Atmospheric Chemistry and Physics Discussions 13, n. 2 (1 febbraio 2013): 3095–134. http://dx.doi.org/10.5194/acpd-13-3095-2013.

Testo completo

Abstract (sommario):

Abstract. Filter-based PM2.5 samples were chemically analyzed to investigate secondary organic aerosol (SOA) formation from isoprene in a rural atmosphere of the southeastern US influenced by both anthropogenic sulfur dioxide (SO2) and ammonia (NH3) emissions. Daytime PM2.5 samples were collected during summer 2010 using conditional sampling approaches based on pre-defined high and low SO2 or NH3 thresholds. Known molecular-level tracers for isoprene SOA formation, including 2-methylglyceric acid, 3-methyltetrahydrofuran-3,4-diols, 2-methyltetrols, C5-alkene triols, dimers, and organosulfate derivatives, were identified and quantified by gas chromatography coupled to electron ionization mass spectrometry (GC/EI-MS) and ultra performance liquid chromatography coupled to electrospray ionization high-resolution quadrupole time-of-flight mass spectrometry (UPLC/ESI-HR-Q-TOFMS). Mass concentrations of six isoprene low-NOx SOA tracers contributed to 12–19% of total organic matter (OM) in PM2.5 samples collected during the sampling period, indicating the importance of the hydroxyl radical (OH)-initiated oxidation (so-called photooxidation) of isoprene under low-NOx conditions that leads to SOA formation through reactive uptake of gaseous isoprene epoxydiols (IEPOX) in this region. IEPOX-derived SOA tracers were enhanced under high-SO2 sampling scenarios, suggesting that SO2 oxidation increases aerosol acidity of sulfate aerosols needed for enhancing heterogeneous oxirane ring-opening reactions of IEPOX. No clear associations between isoprene SOA formation and high and low NH3 conditional samples were found. Furthermore, weak correlations between aerosol acidity and mass of IEPOX SOA tracers suggests that IEPOX-derived SOA formation might be modulated by other factors as well in addition to aerosol acidity. Positive correlations between sulfate aerosol loadings and IEPOX-derived SOA tracers for samples collected under all conditions indicates that sulfate aerosol could be a surrogate for surface area in the uptake of IEPOX onto preexisting aerosols.

Gli stili APA, Harvard, Vancouver, ISO e altri

Più fonti

Tesi sul tema "SOA"

Faravelon, Aurélien. "Une démarche de conception et d'implémentation de la protection de la vie privée basée sur le contrôle d'accès appliquée aux compositions de services". Thesis, Grenoble, 2013. http://www.theses.fr/2013GRENM036/document.

Testo completo

Abstract (sommario):

La vie privée et sa protection sont aujourd'hui largement discutées. Membres de la société civile, juristes ou encore techniciens, nous sommes tous appelés à nous emparer d'une notion que l'on nous présente à la fois comme menacée, désuète ou appartenant à nos libertés fondamentales. Aujourd'hui, les controverses autour de la protection de la vie privée ont pour origine des usages techniques. L'informatisation des fichiers étatiques et les possibilités accrues de surveillance issues des innovations en informatique et, plus récemment, les « usages sociaux » des outils numériques comme les « réseaux sociaux », provoquent de vives réactions. Pourtant, le recours à cette notion, notamment pour protéger les libertés individuelles, est-il complètement satisfaisant alors que, d'une part, les outils à l'origine de sa mise en question suscitent un large engouement, et que, d'autre part, ses contours sont mal définis? Nous adoptons, pour répondre à cette question, une position interdisciplinaire. D'une part, nous enquêtons d'un point de vue philosophique sur la « condition numérique » contemporaine afin d'en saisir les enjeux. Ce faisant, nous établissons que les outils numériques remettent en cause la notion de « frontiére ». Nous montrons simultanément que la possibilité d'une existence séparée est nécessaire pour constituer une subjectivité propre. Se pose alors la question de la mise en pratique d'une telle existence. Nous nous éloignons des approches déontologiques et utilitaristes qui guident actuellement la conception et l'évaluation des outils numériques pour leur préférer une approche fondée sur « l'éthique du souci de soi ». Cette approche nous conduit à établir que le code informatique constitue la structure de la condition numérique et qu'il s'agit de prendre en compte, dés la conception d'une application un ensemble de propriétés, comme la protection de la vie privée. Nous cherchons dans un second temps à aider les concepteurs d'applications à concevoir au mieux et à réaliser des applications qui permettent de protéger la vie privée des utilisateurs et des possesseurs des données. Notre domaine d'application est l'approche orientée services qui est aujourd'hui un largement utilisée. Nous nous concentrons sur son utilisation pour la réalisation d'applications à partir de compositions de services dynamiques et hétérogènes. Nous cherchons à protéger la vie privée à l'aide du contrôle d'accès. Pour ce faire, nous proposons de configurer les propriétés de contrôle d'accès des services au moyen d'une démarche dirigée par les modèles divisée en deux étapes. Au niveau conception, la composition et la politique de contrôle d'accès à un niveau abstrait sont spécifiées par des experts dédiés. Nous estimons que le contrôle d'accès doit être pris en compte dés la conception de l'application afin d'éviter le recours à la programmation manuelle. En rester à un niveau abstrait permet de s'adapter à l'état de la composition et à l'hétérogénéité et au dynamisme des services. Au niveau exécution, notre architecture permet de configurer les services concrets au moyen de proxies responsables de l'exécution du contrôle d'accès. Des transformations de modèles vers textes automatisées permettent de passer d'un niveau à l'autre afin de s'abstraire de la programmation manuelle et de garantir la protection des services concrets par les proxies. Notre approche a été validée par la réalisation d'un prototype et son utilisation sur un cas d'application
Privacy is hot topic. Lawyers, technicians and plain people are all concerned by this notion. Nowadays, most discussions focus on the effects of digital tools, such as social media or surveillance software. However, privacy is still ill-defined. Moreover, digital tools which endanger privacy are widely used. Should not we leave privacy aside and accept that we are, maybe more than ever, visible ?In this doctoral thesis, I address this question from a twofold viewpoint. I first inquire into the nature of our digital condition from a philosophical standpoint. I claim that digital artifacts rework the implementation of our frontiers, be them geographical or social. However, I contend that such frontiers are necessary. As I show that code defines the structure and the effects of digital tools, I point out that properties such as privacy management should be addressed right from the conception of software applications.Helping out designers to address such properties is the second issue I tackle. I focus on Service-Oriented Computing as it is a widely used paradigm. Most speci- fically, I deal with the composition of heterogenous and dynamic services. I define access control as an efficient mechanism to protect privacy and I propose a twofold generative approach to secure services compositions. The composition and its access control policies are separately defined at an abstract level. An expert is responsible for each of them. As we promote an abstract description of the application, we free the designer from technical complexity. At runtime, we propose an architecture which selects and protects the actual services by hiding them behind proxies which run the access control policy. Automated model transformations permit to generate the application from its specification. We thus bypass manual programming. We have implemented a modeling and execution environment and applied our approach to a use case in order to validate our work

Gli stili APA, Harvard, Vancouver, ISO e altri

Jelen, Václav. "Soa a projektové řízení Soa projektů". Master's thesis, Vysoká škola ekonomická v Praze, 2007. http://www.nusl.cz/ntk/nusl-3824.

Testo completo

Abstract (sommario):

V prostředí stále komplexnějších informačních systémů dramaticky rostou nároky na integraci jejich heterogenních částí. Řešení tohoto problému nabízí SOA ? service oriented architecture (architektura orientovaná na služby).

Gli stili APA, Harvard, Vancouver, ISO e altri

Pršala, Ondřej. "SOA Governance jako další vývojový stupeň zavádění SOA architektury". Master's thesis, Vysoká škola ekonomická v Praze, 2008. http://www.nusl.cz/ntk/nusl-5107.

Testo completo

Abstract (sommario):

The thesis is focused on administration and supervision of Service oriented architecture (SOA). The main idea of SOA is system decomposition to functional units, which contain bounded and well understandable functionality. This functionality, in form of service, is provided to other units through clearly described interface. Well-identified relationships between service provider and service consumer are created. SOA governance aims to manage these relationships, to monitor quality of services and to control adherence of stated rules and policies. These rules and policies are established by central team responsible for integration and architecture development. Starting point of successful architecture development is acquaintance of service portfolio and their inter-relationships. Each service should go through whole formal life-cycle, which particular phases have special policies applied. Main interest is devoted to run-time phase - run-time monitoring and run-time governance. Theory is complemented by practical examples of report generation and service monitoring with SLA adherence observation. The thesis also contains structural model of SOA governance taking into account infrastructural elements of SOA and information flows between them.

Gli stili APA, Harvard, Vancouver, ISO e altri

Peng, Qian, e Yang Qing Fan. "SOA and Quality". Thesis, Växjö University, Växjö University, Växjö University, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-5192.

Testo completo

Abstract (sommario):

This thesis emphasizes on investigating the relationship between the quality attributes and service oriented architecture (SOA). Due to quality attributes requirements drive the design of software architecture, it is necessary to maintain the positive quality of SOA and improve the negative quality of SOA. This thesis gives an introduction to SOA, Enterprise Service Bus (ESB) and MULE. Then, it covers information on quality of systems and tactics for achieving each quality attribute. Finally, we discuss the quality of SOA in detail, and illustrate how to set up a SOA and how to improve its quality using a case of an order for supermarket.

Order system

Gli stili APA, Harvard, Vancouver, ISO e altri

Neri, Valerio. "Geschäftsprozessmanagement und SOA". Norderstedt Books on Demand GmbH, 2007. http://deposit.d-nb.de/cgi-bin/dokserv?id=3005703&prov=M&dok_var=1&dok_ext=htm.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Peng, Qian, e YangQing Fan. "SOA and Quality". Thesis, Växjö universitet, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-5152.

Testo completo

Abstract (sommario):

Gli stili APA, Harvard, Vancouver, ISO e altri

Nichel, Valenzuela David Andrés. "Utilización de Workflow en SOA". Tesis, Universidad de Chile, 2007. http://www.repositorio.uchile.cl/handle/2250/104558.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Ekdahl, Rickard, e Jonas Vartiainen. "Anledningar till att implementera SOA". Thesis, Högskolan i Borås, Institutionen Handels- och IT-högskolan, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-20032.

Testo completo

Abstract (sommario):

Vi lever i en värld med konstanta förändringar. I en värld med beslut som drastiskt fattas från olika verksamhetledningars håll. Verksamheter behöver hela tiden kunna möta kraven från kunden och den tekniska utvecklingen. Hur ska man då göra detta? Uppsatsen vars titel är ”Anledningar att implementera SOA” kommer att behandla de anledningar till SOA-implementering som enligt oss är viktiga och prioriterade. Vår studie var kvalitativt inriktad. Den inleddes med en intervju som resulterade i en förståelse för vad SOA egentligen innebär, men även viktiga anledningar som intervjupersonen använde för att argumentera för SOA-implementering. Denna förståelse för SOA och anledningar till att implementera SOA jämfördes sedan med teori vilket resulterade i teorikapitlet. När teorikapitlet hade skapats behövdes det en delphistudie som utfördes med enkäter för att, i analysen, kunna diskutera hur prioriterade de framtagna anledningarna var. Intervjun har på så sätt skapat teorikapitlet och teorikapitlet har i sin tur skapat delphienkäten. Responsen på delphienkäten ledde fram till analysen som utfördes i enlighet med analysmetoden. Sist har vi i utvärderingen beskrivit hur vi ser på vår uppsats så här i efterhand. Uppsatsen är resulterad i en form av förståelse av hur verksamheter skiljer sig i sin uppfattning om ett paradigm (strategi). Dock skildrar uppsatsen det huvudsakliga om SOA och tar fram resultatet som studien går ut på, att ta fram de viktiga och prioriterade anledningarna, genom den anlys som har utförts. Med andra ord resulteraade studien i att det är viktigt att förstå sig på sin strategi och det är viktigt att förstå sig på sina grundpelare. Därför att med tiden förändras tekniken, så förändras också hur besluten tas vilket i sin tur påverkar sättet att styra strategiskt (governance) för att möta konkurrensen. Uppsatsen skildrar i den meningen hur pelarna bygger en stadig framtid. Det vill säga genom flexibilitet, lösa kopplingar och återanvändingsbarhet som för en ledning skapar en framtidsäkerhet och kostnadseffektiv konkurrans genom att bygga pelarna på det här sättet.

Gli stili APA, Harvard, Vancouver, ISO e altri

Lundkvist, Elin, e Gustav Persson. "From guess to success : How to govern service-oriented architectures". Thesis, Uppsala universitet, Företagsekonomiska institutionen, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-255163.

Testo completo

Abstract (sommario):

Service-oriented architecture (SOA) governance has been identified as the most important factor affecting the outcome of SOA within organisations. However, authors have failed to explain how organisations should govern specific aspects of its SOA, leaving a gap in the literature. Therefore, the purpose of this study was to investigate established SOA governance mechanisms in order to explain implications of governance in a SOA context. The research question of the study was to identify which SOA governance mechanisms do or do not provide support for different constituents of SOA. The study also contained three sub-questions; (i) Is there a difference between how SOA governance mechanisms support technical vs. non technical constituents of SOA? (ii) Is there any SOA governance mechanism that is more important than others? (iii) Is there a relation between the SOA governance mechanisms? The study was conducted using theories related to SOA and SOA governance. We identified the most academically accepted SOA governance mechanisms to test their support for different constituents of SOA. To get an holistic view of SOA, we used a SOA maturity framework to identify what the constituents of SOA really are. The support of the SOA governance mechanisms were then studied in relation to the different constituents of SOA, through interviews and observations, during a ten week internship at Scania. The results showed that as good as every SOA governance mechanism supports the constituents of SOA, although the level of support varied. In general, we found patterns separating the support for technological and non-technological constituents of SOA. The technological constituents of SOA were to a great extent provided the same support from SOA governance mechanisms, which also was true for the non-technological constituents of SOA. Interestingly, except for one SOA governance mechanism, the technological constituents of SOA and the non-technological obtained different levels of support from governance. The most important SOA governance mechanisms are the creation of standards and policies, having processes to create and enforce policies, processes for education, and establishing SOA skills and training. We can also conclude that there is a relationship between many of the SOA governance mechanisms, and that academics and practitioners therefore have to view SOA governance holistically, rather than independent governance mechanisms.

Gli stili APA, Harvard, Vancouver, ISO e altri

SOUZA, Brunno Wagner Lemos de. "Convergência entre BPM-SOA e UML-SOA: uma Análise comparativa de integração e de cenários". Universidade Federal de Pernambuco, 2016. https://repositorio.ufpe.br/handle/123456789/18365.

Testo completo

Abstract (sommario):

Submitted by Fabio Sobreira Campos da Costa (fabio.sobreira@ufpe.br) on 2017-03-02T13:55:41Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Dissertação Final-Biblioteca_Brunno.pdf: 2392204 bytes, checksum: ade7199e37779e870f0c3d398da9bb4d (MD5)
Made available in DSpace on 2017-03-02T13:55:41Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Dissertação Final-Biblioteca_Brunno.pdf: 2392204 bytes, checksum: ade7199e37779e870f0c3d398da9bb4d (MD5) Previous issue date: 2016-02-25
Neste trabalho, foram investigados e analisados conceitos fundamentais da metodologia de BPM (Business Process Modeling) através de sua notação BPMN (Business Process Modelling Notation), bem como o desenvolvimento de software por meio da UML (Unified Modeling Language), ambas atreladas à arquitetura SOA (Service-Oriented Architecture), com o objetivo de integrar as áreas de desenvolvimento de software e de gestão de empresas, a fim de possibilitar uma visão macro dos processos. Optou-se por analisar BPM, pois sua metodologia garante uma prática de desenvolvimento rápido do sistema, tornando-o flexível, e permite a sua reutilização, com uso de tecnologias legadas, pois empresas conseguem alcançar um maior controle dos processos de negócio. Já a UML possibilita a padronização na modelagem de software e, assim como BPM, com possível integração com SOA. O objetivo deste estudo é fazer a apresentação dos diversos cenários verificados a partir de um amplo levantamento da literatura que trata dessa integração. Dessa maneira, foi realizada uma comparação quantitativa e qualitativa dos cenários encontrados, a fim de definir qual é a melhor possibilidade de integração para uma empresa. Tudo isso para assegurar a interoperabilidade entre diferentes entidades, agregando valor e reduzindo custos de manutenção para as empresas. Através de descritores selecionados, foi feita uma busca em bases de dados específicas para levantar trabalhos publicados sobre a integração BPM-SOA e UML-SOA. Esse levantamento permitiu observar distintos cenários de integração, além das vantagens, desvantagens e problemas mencionados por seus autores. A finalidade é compreender quais os principais entraves relacionados à integração e implementação de BPM-SOA e UML-SOA que seja capaz de comprovar, quantitativa e qualitativamente, as integrações e apontar qual a melhor possibilidade.
In this study, we investigated and analyzed the fundamental concepts of BPM methodology (Business Process Modeling) through its BPMN notation (Business Process Modelling Notation) and software development through the UML (Unified Modeling Language), both linked to architecture SOA (Service-Oriented Architecture) with the aim of integrating the software development areas and business management, in order to provide a macro view of the processes. We chose to analyze BPM, because its methodology ensures a practice of rapid system development, making it flexible, and allows reuse, using legacy technologies, as companies can achieve greater control of business processes. Already the UML allows for standardization in software modeling and, as BPM, with possible integration with SOA. The aim of this study is to make the presentation of the various scenarios checked from a broad survey of the literature dealing with this integration. Thus, a quantitative and qualitative comparison of the scenarios found was carried out in order to define what is the best possibility of integration for a company. All this to ensure interoperability between different entities, adding value and reducing maintenance costs for companies. Through selected keywords, a search was made in specific databases for up papers on the integration BPM-SOA and UML-SOA. This survey allowed to observe different integration scenarios, beyond the advantages, disadvantages and problems mentioned by the authors. The purpose is to understand what the main obstacles related to the integration and implementation of BPM-SOA and SOA-UML to be able to prove quantitatively and qualitatively, the integrations and point out what the best possibility.

Gli stili APA, Harvard, Vancouver, ISO e altri

Più fonti

Libri sul tema "SOA"

Cho, Chŏng-jun. Kŭbyubang. Soa ŭibang. Kyŏnghŏm pibang soa pogam. Sŏul Tʻŭkpyŏlsi: Yŏgang Chʻulpʻansa, 1988.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

SOA governance. Upper Saddle River, NJ: Prentice Hall, 2011.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

SOA patterns. Shelter Island, NY: Manning, 2012.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

SOA cookbook: Design recipes for building better SOA processes. Birmingham, UK: Packt Pub., 2008.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

SOA in practice. Beijing: O'Reilly, 2007.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Liebhart, Daniel. SOA goes real. München: Carl Hanser Verlag GmbH & Co. KG, 2007. http://dx.doi.org/10.3139/9783446413191.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Rempp, Gerhard, Mark Akermann, Martin Löffler e Jens Lehmann. Model Driven SOA. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-14470-7.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Zeppenfeld, Klaus, e Patrick Finger. SOA und WebServices. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-76991-0.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Antoniades, Pericles. SOA Maturity Model. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-02453-0.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Erl, Thomas. SOA design pattern. Indianapolis: Prentice Hall, 2008.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Più fonti

Capitoli di libri sul tema "SOA"

Masak, Dieter. "SOA". In Xpert.press, 235–53. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-01659-2_9.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Kohlborn, Thomas, e Marcello La Rosa. "SOA Approaches". In Handbook of Service Description, 111–33. Boston, MA: Springer US, 2012. http://dx.doi.org/10.1007/978-1-4614-1864-1_5.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Finger, Patrick, e Klaus Zeppenfeld. "SOA Governance". In Informatik im Fokus, 87–96. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-76991-0_5.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Reiter, Michael. "SOA Models". In Contributions to Economics, 53–72. Heidelberg: Physica-Verlag HD, 1995. http://dx.doi.org/10.1007/978-3-642-95919-6_6.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Liebhart, Daniel. "SOA Grundlagen". In SOA goes real, 1–23. München: Carl Hanser Verlag GmbH & Co. KG, 2007. http://dx.doi.org/10.3139/9783446413191.001.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Liebhart, Daniel. "SOA einführen". In SOA goes real, 145–77. München: Carl Hanser Verlag GmbH & Co. KG, 2007. http://dx.doi.org/10.3139/9783446413191.007.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Král, Jaroslav, e Michal Žemlička. "SOA Worlds". In Communications in Computer and Information Science, 10–19. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-16419-4_2.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Shan, Tony C. "SOA Pragmatism". In Communications in Computer and Information Science, 23–28. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-88655-6_2.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Feuerlicht, George. "Next Generation SOA: Can SOA Survive Cloud Computing?" In Advances in Soft Computing, 19–29. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-10687-3_2.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Antoniades, Pericles. "SOA, Maturity Models, SOA MM and Relevant Work". In SOA Maturity Model, 9–17. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-02453-0_3.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Atti di convegni sul tema "SOA"

Leonid, Sheremetov,. "Semantic SOA 4 SOA Supply Networks". In Information Control Problems in Manufacturing, a cura di Bakhtadze, Natalia, chair Dolgui, Alexandre e Bakhtadze, Natalia. Elsevier, 2009. http://dx.doi.org/10.3182/20090603-3-ru-2001.00217.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Zhou, Sean, e Chris Brealey. "Develop SOA applications using rational SCA tools". In the 2010 Conference of the Center for Advanced Studies. New York, New York, USA: ACM Press, 2010. http://dx.doi.org/10.1145/1923947.1923996.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Muthusamy, Vinod, Hans-Arno Jacobsen, Tony Chau, Allen Chan e Phil Coulthard. "SLA-driven business process management in SOA". In the 2009 Conference of the Center for Advanced Studies. New York, New York, USA: ACM Press, 2009. http://dx.doi.org/10.1145/1723028.1723040.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Zhou, Sean, e Chris Brealey. "Develop SOA applications using rational SCA tools". In the 2009 Conference of the Center for Advanced Studies. New York, New York, USA: ACM Press, 2009. http://dx.doi.org/10.1145/1723028.1723087.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Muthusamy, Vinod, Hans-Arno Jacobsen, Phil Coulthard, Allen Chan, Julie Waterhouse e Elena Litani. "SLA-driven business process management in SOA". In the 2007 conference of the center for advanced studies. New York, New York, USA: ACM Press, 2007. http://dx.doi.org/10.1145/1321211.1321243.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Shan, Tony, Ephraim Feig, Thomas Bui e Jia Zhang. "Smarter SOA". In 2008 IEEE Congress on Services Part II (SERVICES-2). IEEE, 2008. http://dx.doi.org/10.1109/services-2.2008.51.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Müller, Hausi. "SOA governance". In the 2009 Conference of the Center for Advanced Studies. New York, New York, USA: ACM Press, 2009. http://dx.doi.org/10.1145/1723028.1723095.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Oliveira, Joyce Aline, Matheus Vargas e Roni Rodrigues. "SOA Reuse". In the XIV Brazilian Symposium. New York, New York, USA: ACM Press, 2018. http://dx.doi.org/10.1145/3229345.3229419.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Shan, Tony, Ephraim Feig, Thomas Bui e Jia Zhang. "Smarter SOA". In 2008 IEEE International Conference on Web Services (ICWS). IEEE, 2008. http://dx.doi.org/10.1109/icws.2008.145.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Zanuz, Luciano, Alexsandro Filippetto, Giovane Barcelos e Sergio Crespo C. S. Pinto. "SOA engine". In Companion the XIV Brazilian Symposium. New York, New York, USA: ACM Press, 2008. http://dx.doi.org/10.1145/1809980.1809988.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Rapporti di organizzazioni sul tema "SOA"

Seybold, Patricia. SOA—All Over Again. Boston, MA: Patricia Seybold Group, maggio 2005. http://dx.doi.org/10.1571/psgp5-12-05cc.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Michelson, Brenda. Observations from the Field: SOA. Boston, MA: Patricia Seybold Group, maggio 2006. http://dx.doi.org/10.1571/bda5-4-06cc.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Bellomo, Stephany. Suggestions for Documenting SOA-Based Systems. Fort Belvoir, VA: Defense Technical Information Center, settembre 2010. http://dx.doi.org/10.21236/ada537057.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Andress, Walter. Space Surveillance Network (SSN) Optical Augmentation (SOA). Fort Belvoir, VA: Defense Technical Information Center, aprile 1999. http://dx.doi.org/10.21236/ada371927.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Andress, Walter. Space Surveillance Network (SSN) Optical Augmentation (SOA). Appendix. Fort Belvoir, VA: Defense Technical Information Center, aprile 1999. http://dx.doi.org/10.21236/ada371925.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Michelson, Brenda. Web Services, Services and SOA: What Companies Care About. Boston, MA: Patricia Seybold Group, giugno 2005. http://dx.doi.org/10.1571/sa6-30-05cc.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Simanta, Soumya, Ed Morris, Grace A. Lewis, Sriram Balasubramaniam e Dennis B. Smith. A Scenario-Based Technique for Developing SOA Technical Governance. Fort Belvoir, VA: Defense Technical Information Center, giugno 2009. http://dx.doi.org/10.21236/ada512321.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

DiJaili, S. P. Novel operation of semiconductor optical amplifier (SOA) for optoelectronic applications. Office of Scientific and Technical Information (OSTI), marzo 1996. http://dx.doi.org/10.2172/491215.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Michelson, Brenda. Best Practices, Lessons Learned, and Takeaways from Enterprise SOA Practitioners. Boston, MA: Patricia Seybold Group, novembre 2005. http://dx.doi.org/10.1571/psgp11-23-05cc.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Klasky, Hilda B., Paul T. Williams e Bennett Richard Bass. UML and SOA Overview with Example Applications to the xLPR V.2 Project. Office of Scientific and Technical Information (OSTI), settembre 2013. http://dx.doi.org/10.2172/1093095.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Offriamo sconti su tutti i piani premium per gli autori le cui opere sono incluse in raccolte letterarie tematiche. Contattaci per ottenere un codice promozionale unico!