Bibliographies thématiques / Cfosat

Littérature scientifique sur le sujet « Cfosat »

Auteur : Grafiati
Publié le 20 avril 2024

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Articles de revues sur le sujet "Cfosat"

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Xu, Jingwei, Huanping Wu, Ying Xu, Nikolay V. Koldunov, Xiuzhi Zhang, Lisha Kong, Min Xu, Klaus Fraedrich et Xiefei Zhi. « Validation of Nadir SWH and Its Variance Characteristics from CFOSAT in China’s Offshore Waters ». Remote Sensing 15, no 4 (11 février 2023) : 1005. http://dx.doi.org/10.3390/rs15041005.

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The offshore waters of China are a typical monsoon−affected area where the significant wave height (SWH) is strongly influenced by the different seasonal mean flow in winter and summer. However, limited in situ validations of the SWH have been performed on the China–France Oceanography Satellite (CFOSAT) in these waters. This study focused on validating CFOSAT nadir SWH data with SWH data from in situ buoy observations for China’s offshore waters and the Haiyang−2B (HY−2B) satellite, from July 2019 to December 2021. The validation against the buoy data showed that the relative absolute error has a seasonal cycle, varying in a narrow range near 35%. The RMSE of the CFOSAT nadir SWH was 0.29 m when compared against in situ observations, and CFOSAT was found to be more likely to overestimate the SWH under calm sea conditions. The sea−surface winds play a key role in calm sea conditions. The spatial distributions of the CFOSAT and HY−2B seasonal SWHs were similar, with a two−year mean SWH−field correlation coefficient of 0.98. Moreover, the coherence between the two satellites’ SWH variance increased with SWH magnitude. Our study indicates that, in such typical monsoon−influenced waters, attention should be given to the influence of sea conditions on the accuracy of CFOSAT SWH, particularly in studies that combine data from multiple, long−duration space−based sensors.
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Li, Songlin, Huaming Yu, Kejian Wu, Xunqiang Yin, Shuyan Lang et Jiacheng Ye. « Validation of the Ocean Wave Spectrum from the Remote Sensing Data of the Chinese–French Oceanography Satellite ». Remote Sensing 15, no 16 (8 août 2023) : 3918. http://dx.doi.org/10.3390/rs15163918.

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Since the launch of CFOSAT on 29 October 2018, more than three years of observational data of ocean wave spectra with a frequency range of 0.02–0.26 Hz and a horizontal resolution of 70–90 km have been obtained. This study compares wave spectra retrieved from 6°, 8°, and 10° incidence angle beams and their combination provided by CFOSAT with corresponding data from 98 buoys from the National Data Buoy Center (NDBC) in order to validate the remote sensing wave spectral accuracy from 1 January 2020 to 31 December 2022. The correlation coefficient of frequency spectra (Rs) between CFOSAT and buoys is used to represent the accuracy of the spectral form; the root mean square (RMS) of the significant wave height (SWH) is used to represent the accuracy of the total energy. The results indicate that CFOSAT can retrieve reliable wave frequency spectral forms with a high significant wave height (Rs > 0.8 when SWH > 3 m; RS < 0.4 when SWH < 1 m). The low-frequency noise in the swell part causes the main error, the RMS of the swell height is 0.4 m whereas the RMS of wind wave height is 0.24 m, and the mask filter used for spectral partitioned provided by CFOSAT can eliminate the low-frequency noise and improve the Rs of 10° beam wave spectra from 0.59 to 0.64. For the wind wave spectra, the correct spectra have been achieved and the mask filter cannot improve the accuracy. The wave spectra from the 10° beam without mask filtering provides the best estimation of total energy, the RMS of SWH is 0.23 m, after the mask filtering, the best estimation of spectral form can be achieved, the Rs is 0.64. The novelty of this study is that we found the strong correlation between SWH and Rs, where the scatter of SWH and Rs can be fitted as: Rs = 1 − exp(−0.89·SWH + 0.20); according to this approximate formula, we can estimate the reliability of wave spectra provided by CFOSAT according to the SWH in any region, which is important for wave spectral assimilation in the numerical model. The validation of wave direction indicates that the accuracy of wave spectra in the directional component is poor; further research is needed on the causes of directional errors. Generally, this study is not only an evaluation of the quality of the CFOSAT spectral data, but also an important reference for a series of research requiring the CFOSAT spectral data.
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Ye, Haijun, Junmin Li, Bo Li, Junliang Liu, Danling Tang, Wuyang Chen, Hongqiang Yang et al. « Evaluation of CFOSAT Scatterometer Wind Data in Global Oceans ». Remote Sensing 13, no 10 (14 mai 2021) : 1926. http://dx.doi.org/10.3390/rs13101926.

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The China-France Oceanography SATellite (CFOSAT), launched on 29 October 2018, is a joint mission developed by China and France. To evaluate the CFOSAT wind product, L2B swath data with a spatial resolution of 25 × 25 km were compared with in situ measurements between December 2018 and December 2020. The in situ measurements were collected from 217 buoys. All buoy winds were adjusted to 10 m height using a simple logarithmic correction method. The temporal and spatial separations between the CFOSAT and in situ measurements were restricted to less than 30 min and 0.25°. The results indicate that the CFOSAT wind retrievals agree well with the buoy measurements. The root mean square errors (RMSEs) of wind vectors were 1.39 m s−1 and 34.32° and negligible biases were found. In the near shore under rain-free conditions, the RMSEs were enhanced to 1.42 m s−1 and 33.43°. Similarly, the RMSEs were reduced to 1.16 m s−1 and 30.41° offshore after the rain effect was removed. After winds less than 4 m s−1 were removed, the RMSE of wind directions was reduced to 19.69°. The effects of significant wave height, air-sea temperature difference, sea surface temperature, atmospheric pressure and ocean surface current on the wind residuals were assessed. The performance of wind retrievals under the passage of tropical cyclones was evaluated. The evaluation results show that the CFOSAT wind retrievals satisfy the accuracy requirements of scientific research, although some improvements are needed to enhance the performance.
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DONG Xiaolong, ZHU Di, LIN Wenming, ZHANG Kuo, YUN Risheng, LIU Jianqiang, LANG Shuyan, DING Zhenyu, MA Jianying et XU Xingou. « Orbit Performances Validation for CFOSAT Scatterometer ». Chinese Journal of Space Science 40, no 3 (2020) : 425. http://dx.doi.org/10.11728/cjss2020.03.425.

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Li, Zhen, Anton Verhoef et Ad Stoffelen. « Bayesian Sea Ice Detection Algorithm for CFOSAT ». Remote Sensing 14, no 15 (25 juillet 2022) : 3569. http://dx.doi.org/10.3390/rs14153569.

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This paper describes the adaptation of the Bayesian sea ice detection algorithm for the rotating fan-beam scatterometer CSCAT onboard the China–France Oceanography Satellite (CFOSAT). The algorithm was originally developed and applied for fixed fan-beam and rotating pencil-beam scatterometers. It is based on the probability of the wind and ice backscatter distances from the measurements to their corresponding geophysical model functions (GMFs). The new rotating Ku-band fan-beam design introduces very diverse geometry distributions across the swath, which leads to three main adaptations of the algorithm: (1) a new probability distribution function fit for the backscatter distances over open sea; (2) a linear ice GMF as a function of incidence angle; (3) the separation of outer swath wind vector cells ((WVCs) number 1, 2, 41, 42) from the other WVCs to form two sets of probability distribution function fits for these two WVC groups. The results are validated against sea ice extents from the active microwave ASCAT and the passive microwave SSMI. The validation shows good agreement with both instruments, despite the discrepancies with SSMI during the melting season, and this discrepancy is caused by the lower sensitivity of the passive microwave to detect the ice at a low concentration with a mixed water/ice state, while the scatterometer is more tolerant regarding this situation. We observed that the sea-ice GMF regression between HH and VV sea-ice backscatter at low and high incidence angles decorrelates at around −12 dB (28) and −20 dB (50) and an experiment with truncated backscatter values at these incidence angles is executed, which significantly improves the year-long average sea ice extents. In conclusion, the adapted algorithm for CSCAT works effectively and yields consistent sea ice extents compared with active and passive microwave instruments. As such, it can, in principle, contribute to the long-term global scatterometer sea ice record, and as the algorithm was adapted for a rotating fan-beam scatterometer, it also can serve as a guideline for the recently launched, dual-frequency, rotating fan-beam scatterometer WindRAD.
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Zhao, Xiaokang, Wenming Lin, Marcos Portabella, Zhixiong Wang et Yijun He. « Effects of rain on CFOSAT scatterometer measurements ». Remote Sensing of Environment 274 (juin 2022) : 113015. http://dx.doi.org/10.1016/j.rse.2022.113015.

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Li, Bo, Junmin Li, Shilin Tang, Ping Shi, Wuyang Chen et Junliang Liu. « Evaluation of CFOSAT Wave Height Data with In Situ Observations in the South China Sea ». Remote Sensing 15, no 4 (6 février 2023) : 898. http://dx.doi.org/10.3390/rs15040898.

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The wave spectrometer operated by the China–France Oceanography Satellite (CFOSAT) can provide global ocean wave observation data. Although a lot of work on calibration and verification has been carried out in the open oceans dominated by swells, the quality of the data in the relatively enclosed sea area with complex terrain still lacks sufficient examination. The objective of this study is to assess the performance of the significant wave height data of the CFOSAT in the South China Sea (SCS), a unique sea area characterized by semi-enclosed basin and multi-reef terrain, and to recognize the environmental factors affecting the data quality. Compared against the long-term observations from five mooring or buoy sites, we find that the data is well performed in the relatively open and deep areas of the SCS, with an average correlation coefficient as high as 0.87, and a low average root-mean-square error of 0.47 m. However, the combined effects of complex topography, monsoons, and swell proportion variation will affect the performance of data. In the southern deep areas, the waves may be affected by a large number of dotted reefs, leading to wave deformations and energy dissipation in different seasons. In the northern nearshore areas, waves tend to be sheltered by the land or distorted by the shallow topography effects. These processes make it difficult for the swell to fully develop as in the open oceans. The low proportion of swell is a disadvantage for the CFOSAT to correctly observe the wave data and may lead to possible errors. Our results emphasize the importance of more verification when applying the CFOSAT data in certain local seas, and the necessity to adjust the algorithm of inverting wave spectra according to specific environmental factors.
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Li, Zheng, Bingcheng Wan, Zexia Duan, Yuanhong He, Yingxin Yu et Huansang Chen. « Evaluation of HY-2C and CFOSAT Satellite Retrieval Offshore Wind Energy Using Weather Research and Forecasting (WRF) Simulations ». Remote Sensing 15, no 17 (25 août 2023) : 4172. http://dx.doi.org/10.3390/rs15174172.

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This study simulated the spatial distribution of wind speeds and wind energy density by using the WRF model, and we used the WRF-simulated results to evaluate the sea surface wind speeds retrieved from the HY-2C and CFOSAT satellite-borne microwave scatterometers over the Yellow Sea region. The main conclusions were as follows: (1) The combination of the MRF boundary layer parameterization scheme, the MM5 near-surface parameterization scheme, and the Global Data Assimilation System (GDAS) initial field demonstrated the best performance in simulating the 10 m wind speed in the Yellow Sea region, with a root-mean-square error (RMSE) of 1.57, bias of 1.24 m/s, and mean absolute percentage error (MAPE) of 17%. (2) The MAPE of the HY-2C inversion data was 9%, while the CFOSAT inversion data had an MAPE of 6%. The sea surface wind speeds derived from the HY-2C and CFOSAT satellite scatterometer inversions demonstrated high accuracy and applicability in this region. (3) The wind speed was found to increase with altitude over the Yellow Sea, with higher wind speeds observed in the southern region compared to the northern region. The wind power density increased with altitude, and the wind power density in the southern area of the Yellow Sea was higher than in the northern region. (4) The CFOSAT satellite inversion products were in good agreement with the WRF simulation results under low wind speed conditions. In contrast, the HY-2C satellite inversion products showed better agreement under moderate wind speed conditions. Under high wind speed conditions, both satellite inversion products exhibited minor deviations, but the HY-2C product had an overall overestimation, while the CFOSAT product remained within the range of −1 to 1 m/s. (6) The wind power density increased with the satellite-inverted 10 m wind speed. When the 10 m wind speed was less than 9 m/s, the wind power density exhibited a roughly cubic trend of increase. However, when the 10 m wind speed exceeded 9 m/s, the wind power density no longer increased with the rise in 10 m wind speed. These findings provide valuable insights into wind energy resources in the Yellow Sea region and demonstrate the effectiveness of satellite scatterometer inversions for wind speed estimation. The results have implications for renewable energy planning and management in the area.
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Li, Bo, Junmin Li, Junliang Liu, Shilin Tang, Wuyang Chen, Ping Shi et Yupeng Liu. « Calibration Experiments of CFOSAT Wavelength in the Southern South China Sea by Artificial Neural Networks ». Remote Sensing 14, no 3 (7 février 2022) : 773. http://dx.doi.org/10.3390/rs14030773.

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The wave data measured by CFOSAT (China France Oceanography Satellite) have been validated mainly based on numerical model outputs and altimetry products on a global scale. It is still necessary to further calibrate the data for specific regions, e.g., the southern South China Sea. This study analyses the practicability of calibrating the dominant wavelength by using artificial neural networks and mean impact value analysis based on two sets of buoy data with a 2-year observation period and contemporaneous ERA5 reanalysis data. The artificial neural network modeling experiments are repeated 1000 times randomly by Monte Carlo methods to avoid sampling uncertainty. Both experimental results based on the random sampling method and chronological sampling method are performed. Independent buoy observations are used to validate the calibration model. The results show that although there are obvious differences between the CFOSAT wavelength data and the field observations, the parameters observed by the satellite itself can effectively calibrate the data. In addition to the wavelength, nadir significant wave height, nadir wind speed, and the distance between the calibration point and satellite observation point are the most important parameters for the calibration. Accurate data from other sources, such as ERA5, would be helpful to further improve the calibration results. The variable contributing the most to the calibration effect is the mean wave period, which virtually provides relatively accurate wavelength information for the calibration network. These results verify the possibility of synchronous self-calibration for the CFOSAT wavelength data and provide a reference for the further calibration of the satellite products in other regions.
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Shao, Weizeng, Tao Jiang, Yu Zhang, Jian Shi et Weili Wang. « Cyclonic Wave Simulations Based on WAVEWATCH-III Using a Sea Surface Drag Coefficient Derived from CFOSAT SWIM Data ». Atmosphere 12, no 12 (2 décembre 2021) : 1610. http://dx.doi.org/10.3390/atmos12121610.

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It is well known that numerical models are powerful methods for wave simulation of typhoons, where the sea surface drag coefficient is sensitive to strong winds. With the development of remote sensing techniques, typhoon data (i.e., wind and waves) have been captured by optical and microwave satellites such as the Chinese-French Oceanography SATellite (CFOSAT). In particular, wind and wave spectra data can be simultaneously measured by the Surface Wave Investigation and Monitoring (SWIM) onboard CFOSAT. In this study, existing parameterizations for the drag coefficient are implemented for typhoon wave simulations using the WAVEWATCH-III (WW3) model. In particular, a parameterization of the drag coefficient derived from sea surface roughness is adopted by considering the terms for wave steepness and wave age from the measurements from SWIM products of CFOSAT from 20 typhoons during 2019–2020 at winds up to 30 m/s. The simulated significant wave height (Hs) from the WW3 model was validated against the observations from several moored buoys active during three typhoons, i.e., Typhoon Fung-wong (2014), Chan-hom (2015), and Lekima (2019). The analysis results indicated that the proposed parameterization of the drag coefficient significantly improved the accuracy of typhoon wave estimation (a 0.49 m root mean square error (RMSE) of Hs and a 0.35 scatter index (SI)), greater than the 0.55 RMSE of Hs and >0.4 SI using other existing parameterizations. In this sense, the adopted parameterization for the drag coefficient is recommended for typhoon wave simulations using the WW3 model, especially for sea states with Hs < 7 m. Moreover, the accuracy of simulated waves was not reduced with growing winds and sea states using the proposed parameterization. However, the applicability of the proposed parameterization in hurricanes necessitates further investigation at high winds (>30 m/s).
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Thèses sur le sujet "Cfosat"

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Santiago, Pelaez Zapata Daniel. « Beyond the Sea Surface : Exploring Ocean Wave Measurements From Multiple Perspectives ». Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASM004.

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Cette thèse explore les mesures de vagues océaniques sous plusieurs perspectives, étendant l'analyse au-delà de leur manifestation visuelle à la surface de la mer. Les limitations existantes dans les technologies de mesure entravent une compréhension complète d'aspects tels que le spectre directionnel des vagues, les processus de déferlement et les essaims de bulles générées par les vagues. Cette étude intègre des données provenant de différentes plates-formes, y compris de capteurs installés au fond, de bouées de surface et de satellites, abordant les limitations de couverture spatiale et temporelle. Une nouvelle technique basée sur la transformation en ondelettes pour l'estimation du spectre directionnel de vagues est présentée, montrant des performances cohérentes et des avantages par rapport aux méthodes conventionnelles. L'analyse de la propagation directionnelle des vagues révèle des distributions étroites au pic spectral et un élargissement asymétrique aux fréquences plus basses et plus élevées. La thèse compare également les données des bouées GPS avec les observations satellitaires de la mission CFOSAT/SWIM. Les propriétés acoustiques des vagues océaniques sont examinées à travers des mesures d'essaims de bulles, révélant une relation entre la vitesse du vent, la profondeur de l'essaim de bulles et la couverture d'écume. Le rôle de la circulation de Langmuir dans le transport des essaims de bulles est mis en évidence. Le bruit sous-marin et sa corrélation avec les variables environnementales sont étudiés à l'aide d'un hydrophone monté sur le fond. Dans l'ensemble, la thèse fournit une description complète des vagues océaniques, offrant des perspectives précieuses sur les interactions complexes entre l'air et la mer
This thesis explores ocean wave measurements from multiple perspectives, extending the analysis beyond their visual manifestation on the sea surface. Existing limitations in measurement technologies hinder a full understanding of aspects such as directional wave spectrum, wave breaking processes, and wave-induced bubble plumes. This study integrates data from various platforms, including bottom-mounted sensors, surface buoys, and satellites, addressing spatial and temporal coverage limitations. A novel wavelet-based technique for directional wave spectrum estimation is presented, showing consistent performance and advantages over conventional methods. Analysis of directional wave spreading reveals narrow distributions at the spectral peak and asymmetric broadening at lower and higher frequencies. The thesis also compares GPS buoy data with satellite-based observations from the CFOSAT/SWIM mission. The acoustic properties of ocean waves are examined through measurements of bubble plumes, revealing a relationship between wind speed, bubble plume depth, and whitecapping coverage. The role of Langmuir circulation in transporting bubble plumes is highlighted. Underwater noise and its correlation with environmental variables are investigated using a bottom-mounted hydrophone. Overall, the thesis provides a comprehensive description of ocean waves, offering valuable insights into complex air-sea interactions
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Bilson, Richard C. « Implementing overload and polymorphism in Cforal ». Waterloo, Ont. : University of Waterloo, [Dept. of Computer Science], 2003. http://etd.uwaterloo.ca/etd/rcbilson2003.pdf.

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Thesis (M.Math.)--University of Waterloo.
"A thesis presented to the University of Waterloo in fulfillment of the thesis requirement for the degree of Master of Mathematics in Computer Science". Includes bibliographical references.
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Aspler, Julia, et Elsa Axelsson. « The role of CFOs in family business acquisitions ». Thesis, Internationella Handelshögskolan, Jönköping University, IHH, Företagsekonomi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-48620.

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Abstract Background & Problem: Many family firms face a change in ownership in the near future. Acquisitions of family firms can therefore be a solution for the change in ownership. Due to special family firm characteristics, acquisitions of such companies can be complicated. Previous research shows that accountants and CFOs have a positive effect on the firm’s survival and growth. However, the CFOs’ roles in family business acquisitions have not been studied before.    Purpose: The purpose of this research is to explore what roles accountants and CFOs have in acquisitions of family firms.   Method: The base of this study is an abductive research approach with a qualitative research strategy. The main method was semi-structured interviews that was complemented with a document study of official documents from websites.    Conclusion: The empirical findings and analysis revealed that the CFOs in family firm acquisitions are important, but the CFOs’ roles in acquirer and acquiree differ. The CFOs in the selling family business is more of a bean counter in the process and provide material. The CFOs in the acquiring group is more of a business partner, conducting analyses and are involved in strategic decisions. The process of acquiring family firms is a special situation for the CFOs in the acquiring group since they need to adapt to the family firms’ informal culture.
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Malmros, Catrine, et Johnson Andrea. « Brandpåverkan på skyddskonstruktioner i funktionsskyddsrum : En undersökning av resthållfasthet i betongbalkar ». Thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-40032.

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In the beginning of the 21st century decisions were made regarding the decommission of the total defence in Sweden. Since then the security policy situation has changed, regarding both the risk of war and other types of treats such as terrorism. Due to this the total defence is now being re-established. The Swedish Fortifications Agency and Research Institutes of Sweden (RISE) has initiated the Centre of excellence for fortification (CFORT) to support the development of competence in fortification. In case of a crisis or war secured function shelters constitutes a significant part of the Swedish total defence by protecting important technology and activity.The purpose of this bachelor thesis is to investigate the remaining load bearing capacity in concrete constructions in secured function shelters after exposure to fire. This will provide a foundation for further research within the area of the effects of fire in secured function shelters. To achive this, experiments were conducted on nine concrete beams which were casted according to calculations based on the structural codes of the Swedish Fortifications Agency (FKR). Since fully scaled beams are difficult to manage and would not fit in the equipment being used, the beams were casted in a smaller size; 2000 x 150 x 210 mm. Samples of the concrete and the reinforcement were sent to the Swedish Cement and Concrete Research Institute (CBI) for tests which provided actual values of the compressive strength, yield point and modulus of elasticity. Six of the beams were in pairs exposed to fire in a specially built oven according to three different temperature curves. All the beams were later subjected to load until failure. Calculations regarding load bearing capacity were executed with both theoretical and actual values obtained from CBI. The results were compared to the results from the loading tests. During the last fire experiment the beams spalled, most likely due to the quickly rising temperature. The loading test showed that the strength of the beams which had not spalled were not significantly lower than the unaffected beams. Those beams showed a reduction of only 0 – 6 %. However, the beams which had spalled showed a reduce in strength of approximately 20 %.
Centrum för fortifikatorisk kompentens
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Alsuhaibani, Azzam A. « The Impact of Social Ties between CEOs and CFOs on Financial Reporting Quality ». Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case1532084149612262.

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Dimitrov, Dara K. « The Creation of Sustainable Development : What it means to CFOs in New Zealand ». The University of Waikato, 2009. http://adt.waikato.ac.nz/public/adt-uow20090304.163356/index.html.

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Nolli, Luciana Marangni. « Ayahuasca : potencial terapêutico na dependência ao álcool e atividade neural da proteína cFOS em modelo experimental ». reponame:Repositório Institucional da UnB, 2018. http://repositorio.unb.br/handle/10482/34164.

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Dissertação (mestrado)—Universidade de Brasília, Faculdade de Ciências da Saúde, Programa de Pós-Graduação em Ciências Farmacêuticas, 2018.
Fundação de Apoio à Pesquisa do Distrito Federal (FAP-DF).
As opções farmacológicas para o tratamento do alcoolismo possuem limitações, e estudos em humanos têm mostrado ser a ayahuasca, uma bebida psicoativa ancestral de uso religioso/ritualístico com ação serotoninérgica, uma possível opção terapêutica. Os objetivos deste estudo foram avaliar o impacto da ayahuasca no consumo de álcool por ratos Wistar que consumiram álcool durante 8 semanas segundo o protocolo IA2BC (intermittent access to 2-botttle choice), avaliar a expressão da proteína cFos e substância Nissl em regiões cerebrais relevantes no processo de dependência e o comportamento dos animais nos testes de campo aberto e labirinto em cruz elevado. Na 8o semana do protocolo IA2BC, os ratos foram divididos em 5 grupos de 12 animais e tratados por 5 dias com H2O (controle), naltrexona, um antagonista opioide utilizado no tratamento da dependência, ou com ayahuasca (Aya) nas doses 0,5, 1 e 2 X a dose ritualística. Um grupo sadio (n=4) não exposto ao álcool foi sacrificado na 7º semana e os outros grupos 18 dias depois do tratamento. O tratamento com naltrexona ou ayahuasca não diminuíram o consumo de álcool com relação à linha de base (7º. Semana), mas o consumo foi menor no grupo naltrexona em relação ao grupo H2O. A exposição ao álcool aumentou a expressão da cFos em todas as áreas cerebrais, de maneira significante principalmente no cortex medial pré-frontal e núcleo accumbens. Com relação ao grupo controle H2O, a cFos foi signficativamente menor no cortex medial pré-frontal para o grupo Aya0,5. O tratamento com naltrexona aumentou signficativamente a expressão de cFos no núcleo accumbens e estriado em relação ao grupo controle. A exposição ao álcool aumentou a densidade de corpusculos de Nissl nas regiões neurais investigadas para os grupos H2O, naltrexona e Aya2, grupos que também apresentaram aumento do peso do cérebro em relação ao grupo sadio. O tratamento com a naltrexona ou ayahuasca não tiveram impacto significativo no comportamento dos ratos expostos ao álcool nos testes comportamentais. O potencial da ayahuasca no tratamento da dependência ao álcool deve ser melhor investigado utilizando outros protocolos de exposição e tratamento. Adicionalmente, o aumento da expressão da cFos no estriado e núcleo accumbens em animais tratados com naltrexona (significativo) e ayahuasca não era esperado, e demanda estudos futuros.
Pharmacological options to treat alcohol addiction are limited, and human studies have demonstrated that ayahuasca, an ancestral infusion with serotoninergic action used in religious ceremonies, has a potential use in the treatment. The objectives of this studies were to evaluate the effect of ayahuasca treatment on alcohol consumption of Wistar rats exposed to alcohol during 8 weeks according to the IA2BC protocol (intermittent access to 2-bottle choice), evaluate the cFos expression and Nissl substance in neural areas relevant to chemical addiction, and the animal behavior in the open field and elevated plus-maze tests. On the 8th week of the IA2BC protocol, the animals were divided in 5 groups of 12 animals and treated daily for 5 days with H2O, naltrexone, an opioid antagonist used to treat alcohol addiction, and ayahuasca (Aya) at the 0.5, 1 or 2x the religious doses. A naïve group (n=4) not exposed to alcohol was sacrificed at the end of the 7th week and the other groups 18 hours after the last treatment. Treatment with either naltrexone or ayahuasca did not decrease the alcohol consumption compared to the baseline (7th week), but the consumption in naltrexone treated rats was significantly lower compared to the H2O group. Exposure to alcohol increase cFos expression in all regions, an increase that was significant mainly in the medial orbital cortex and accumbens nu, core regions. cFos was significantly lower in the Aya0.5 group compared with the H2O group in the medial orbital cortex. There was a significant increase in the cFos in the accumbens nu core and striatum for the naltrexone group. The exposure to alcohol increased the number of Nissl substance in the H2O, naltrexone and Aya2 groups, which also showed an increased brain weight compared to the naïve group. Treatment with naltrexone or ayahuasca did not have significant impact on the behavior of the animals in both tests. The potential of ayahuasca treatment on alcohol addiction/consumption needs to be further investigated using other treatment protocols. In addition, the increase of cFos in the accumbens nu core and striatum in rats treated with naltrexone (significant) or ayahuasca was not expected and also requires further investigation.
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Han, Feng. « Tournament Incentives vs. Equity Incentives of CFOs : The Effect on Firms' Risk Taking and Earnings Management ». Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc984224/.

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My dissertation consists of two essays on CFOs' promotion-based tournament incentives and performance-based equity incentives. The first essay examines the joint implications of CFOs' tournament incentives and equity incentives for firms' risk-taking. With the pay gap between the CEO and the CFO as the proxy for the CFO's tournament incentives, I find that the relationship between a firm's risk taking and the CFO's tournament incentives is non-monotonic. In particular, I show that below a certain level, increase in pay gap is associated with increase in firm risk taking (e.g., higher leverage, lower cash holding balance and higher R&D intensity). However, after reaching a certain level, the CEO-CFO pay gap negatively impacts risk-taking, as increase in pay gap is associated with lower leverage, higher cash holding balance and lower R&D intensity. With the CFO's pay-performance sensitivity as the proxy for the CFO's equity incentives, I find that the CFO's equity incentives negatively impact firm's R&D intensity, but have no significant impact on broader financial decisions such as capital structure and cash policy. Collectively, my findings indicate that CFO incentives play an important role in firm's risk-taking behaviors, and the effect of the CFO's tournament incentives is more pronounced. The second essay studies the impact of tournament incentives and equity incentives for CFOs on firms' earnings management, including accrual-based earnings management (e.g., total accruals, abnormal accruals) and real activities manipulation (e.g., abnormal discretionary expenditures, abnormal production costs). Measuring the CFO's tournament incentives as the pay gap between the CEO and the CFO, I show that the CFO's tournament incentives positively influence total accruals and abnormal accruals. Meanwhile, the CFO's equity incentives, measured as the CFO's pay-performance sensitivity, are found positively related to real activities manipulation proxies and total accruals. My findings show a consistent pattern before and after the passage of SOX (Sarbanes-Oxley Act of 2002), but the incentives' effects on earnings management have become less significant in the post-SOX period. Overall, the CFOs' tournament and equity incentives both play an important role in earnings management, but their relative importance lies in different earnings management techniques.
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Redon, Marie. « Evolution of the CFOs along with the Financialization process in France, a study of their reciprocal relationships ». Thesis, Paris Sciences et Lettres (ComUE), 2018. http://www.theses.fr/2018PSLED028/document.

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Cette thèse étudie l'évolution des carrières, des rôles et de l’influence des Directeurs Financiers au regard du processus de financiarisation en France. En analysant la financiarisation et les Directeurs Financiers à travers une approche institutionnaliste, cette recherche présente leurs relations réciproques depuis les années 1980. Alors que le processus de financiarisation a influencé l'évolution de la profession de Directeur Financier, ces derniers ont de leur côté contribué à la financiarisation de différentes manières. Au moyen d'une approche méthodologique mixte, basée sur 1 040 Curriculum Vitae de Directeurs Financiers et 58 entretiens, cette thèse offre une étude approfondie et à grande échelle de l'évolution des Directeurs Financiers au regard du processus de financiarisation en France
This dissertation investigates the evolution of the Chief Financial Officers’ (CFO) backgrounds, roles and agencies along with the financialization process in France. By studying financialization and CFOs from an institutional perspective, it presents their reciprocal relationships since the 1980s. While the financialization process has influenced the evolution of the CFO profession, CFOs also have various repercussions on financialization. Thanks to 1,040 resumes of CFOs and 58 interviews analyzed through a multiphase mixed method, this dissertation offers both a large scale and an in-depth study of the evolution of the CFOs along with the financialization process
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Anisimova, Margarita [Verfasser]. « Investigating the long-term effects of spike-timing-dependent plasticity and the activity-dependence of cFos expression in hippocampal pyramidal neurons using optogenetics : Untersuchung der Langzeiteffekte der Spike-Timing-abhängigen Plastizität und der Aktivitätsabhängigkeit der cFos-Expression in Hippocampus-Pyramiden-Neuronen mittels Optogenetik / Margarita Anisimova ». Hamburg : Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky, 2020. http://d-nb.info/1225041856/34.

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Livres sur le sujet "Cfosat"

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David, Parmenter. Winning CFOs. Hoboken, NJ, USA : John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118269152.

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Parmenter, David. Winning CFOs : Implementing and applying better practices. Hoboken, N.J : Wiley, 2011.

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Winning CFOs : Implementing and applying better practices. Hoboken, N.J : Wiley, 2011.

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Lindsay, Hugh. Strategic planning : What boards should expect from CFOs. Toronto : Canadian Institute of Chartered Accountants, 2003.

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(Firm), Greenwich Associates, dir. Six questions CFOs might ask today : Large corporate finance, 1992. Greenwich, CT (8 Greenwich Office Park, Greenwich 06831-5195) : Greenwich Associates, 1992.

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Lindsay, Hugh. Financial aspects of governance : What boards should expect from CFOs. Toronto : Canadian Institute of Chartered Accountants, 2004.

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Mellon, Elizabeth. The new CFOs : How financial teams and their leaders can revolutionize modern business. Philadelphia, PA : Kogan Page, 2012.

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Reed, G. Edward. Is there a pension plan crisis ? : The perspectives, reactions and strategies of Canada CFOs. Ottawa : Conference Board of Canada, 2004.

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Easton, Kenneth. $urviving your business debt : A financial survival guidebook for business owners, financial managers, and CFOs. Exeter, N.H : Pub. Works, 2006.

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Easton, Kenneth. $urviving your business debt : A financial survival guidebook for business owners, financial managers, and CFOs. Exeter, N.H : Pub. Works, 2006.

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Chapitres de livres sur le sujet "Cfosat"

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Senani, Raj, D. R. Bhaskar, A. K. Singh et V. K. Singh. « Design of Filters Using CFOAs ». Dans Analog Circuits and Signal Processing, 81–130. New York, NY : Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-5188-4_4.

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Neumüller, Martin, Panayot S. Vassilevski et Umberto E. Villa. « Space-Time CFOSLS Methods with AMGe Upscaling ». Dans Lecture Notes in Computational Science and Engineering, 253–60. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52389-7_25.

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Jha, Sahil Kumar, Shiva Aggarwal, Saurabh Yadav et Ram Bhagat. « Design of Inverse Filters Using CFOAs ». Dans Lecture Notes in Electrical Engineering, 1153–63. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9019-1_95.

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Senani, Raj, D. R. Bhaskar, A. K. Singh et V. K. Singh. « Synthesis of Sinusoidal Oscillators Using CFOAs ». Dans Analog Circuits and Signal Processing, 131–79. New York, NY : Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-5188-4_5.

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Senani, Raj, D. R. Bhaskar, A. K. Singh et V. K. Singh. « Advances in the Design of Bipolar/CMOS CFOAs and Future Directions of Research on CFOAs ». Dans Analog Circuits and Signal Processing, 223–40. New York, NY : Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-5188-4_8.

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Senani, Raj, D. R. Bhaskar, A. K. Singh et V. K. Singh. « Miscellaneous Linear and Nonlinear Applications of CFOAs ». Dans Analog Circuits and Signal Processing, 181–99. New York, NY : Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-5188-4_6.

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Senani, Raj, D. R. Bhaskar, A. K. Singh et V. K. Singh. « Realization of Other Building Blocks Using CFOAs ». Dans Analog Circuits and Signal Processing, 201–21. New York, NY : Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-5188-4_7.

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Senani, Raj, D. R. Bhaskar, V. K. Singh et R. K. Sharma. « Waveform Generators Using Current Conveyors and CFOAs ». Dans Sinusoidal Oscillators and Waveform Generators using Modern Electronic Circuit Building Blocks, 525–40. Cham : Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-23712-1_13.

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Egle, Ulrich, Thomas K. Birrer, Markus Rupp et Marco Passardi. « Inflation als Aufgabe des CFOs ». Dans Quick Guide Inflations-Management, 11–19. Wiesbaden : Springer Fachmedien Wiesbaden, 2023. http://dx.doi.org/10.1007/978-3-658-42509-8_2.

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Senani, Raj, D. R. Bhaskar, A. K. Singh et V. K. Singh. « CFOAs : Merits, Demerits, Basic Circuits and Available Varieties ». Dans Analog Circuits and Signal Processing, 25–48. New York, NY : Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-5188-4_2.

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Actes de conférences sur le sujet "Cfosat"

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Hauser, D., Dong Xiaolong, L. Aouf, C. Tison et P. Castillan. « Overview of the CFOSAT mission ». Dans IGARSS 2016 - 2016 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2016. http://dx.doi.org/10.1109/igarss.2016.7730512.

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Dong, Xiaolong, Di Zhu, Jintai Zhu et Tao Wang. « Progresses of development of CFOSAT scatterometer ». Dans IGARSS 2012 - 2012 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2012. http://dx.doi.org/10.1109/igarss.2012.6351594.

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Dong, Xiaolong, Di Zhu, Lei Zhang, Risheng Yun, Wenming Lin et Shuyan Lang. « Preliminary Results of the CFOSAT Scatterometer ». Dans IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2019. http://dx.doi.org/10.1109/igarss.2019.8899837.

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Zhu, Di, Lei Zhang, Xiaolong Dong, Risheng Yun, Wenming Lin et Shuyan lang. « Preliminary Calibrations of the Cfosat Scatterometer ». Dans IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2019. http://dx.doi.org/10.1109/igarss.2019.8898712.

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Xu, Xingou, Risheng Yun, Xiaolong Dong, Di Zhu et Shuyan Lang. « Data and processing of RFSCAT onboard CFOSAT ». Dans IGARSS 2016 - 2016 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2016. http://dx.doi.org/10.1109/igarss.2016.7730207.

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Tourain, C., D. Hauser, D. Alraddawi, L. Hermozo, R. Rodriguez Suquet, P. Schippers, L. Aouf et al. « Evolutions and Improvements in CFOSAT SWIM Products ». Dans IGARSS 2021 - 2021 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2021. http://dx.doi.org/10.1109/igarss47720.2021.9553274.

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Gouillon, Flavien, Guy Boutonnet, Laurent Clarac et Frédéric Menot. « On the CFOSAT mission ground segment development ». Dans 15th International Conference on Space Operations. Reston, Virginia : American Institute of Aeronautics and Astronautics, 2018. http://dx.doi.org/10.2514/6.2018-2376.

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Zhu, Di, Xiaolong Dong, Risheng Yun et Xingou Xu. « Recent advances in developing the CFOSAT scatterometer ». Dans IGARSS 2016 - 2016 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2016. http://dx.doi.org/10.1109/igarss.2016.7730515.

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Tourain, C., L. Hermozo, D. Hauser, L. Aouf, C. Peureux, V. Quet, A. Ollivier, A. Gounou, M. Averseng et J. M. Lachiver. « CFOSAT : Products Reprocessing and Contributions in Oceanography ». Dans IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2023. http://dx.doi.org/10.1109/igarss52108.2023.10283105.

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Lin, Wenming, Marcos Portabella, Shuyan Lang, Xiaolong Dong, Xingou Xu, Zhixiong Wang et Yijun He. « On the Quality of Cfosat Scatterometer Winds ». Dans IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2019. http://dx.doi.org/10.1109/igarss.2019.8898841.

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Rapports d'organisations sur le sujet "Cfosat"

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Global CFOs : Facing Growing Data Security Threats. IEDP Ideas for Leaders, octobre 2018. http://dx.doi.org/10.13007/717.

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Don't Let CFOs and Accountants Slow Innovation. IEDP Ideas for Leaders, janvier 2013. http://dx.doi.org/10.13007/117.

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CFOs Reborn as Agents of Organizational Change. IEDP Ideas for Leaders, juin 2013. http://dx.doi.org/10.13007/161.

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Promotion-Focus CEOs and CFOs Drive Strategic Growth. IEDP Ideas for Leaders, octobre 2019. http://dx.doi.org/10.13007/753.

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