Academic literature on the topic 'Window DEA'

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

Select a source type:

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

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

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

Journal articles on the topic "Window DEA"

1

김수영 and Moon-Gil Yoon. "Network DEA 모형과 DEA-window 분석을 이용한 저비용항공사 효율성 분석." Journal of the Aviation Management Society of Korea 17, no. 2 (April 2019): 117–32. http://dx.doi.org/10.30529/amsok.2019.17.2.007.

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

Shrestha, Milan, Gih-Keong Lau, Anand Asundi, and Zhenbo Lu. "Dielectric Elastomer Actuator-Based Multifunctional Smart Window for Transparency Tuning and Noise Absorption." Actuators 10, no. 1 (January 15, 2021): 16. http://dx.doi.org/10.3390/act10010016.

Full text
Abstract:
Soft actuators are compliant material-based devices capable of producing large deformation upon external stimuli. Dielectric elastomer actuators (DEA) are a type of soft actuator that operates on voltage stimuli. Apart from soft robotics, these actuators can serve many novel applications, for example, tunable optical gratings, lenses, diffusers, smart windows and so on. This article presents our current work on tunable smart windows which can regulate the light transmittance and the sound absorption. This smart window can promote daylighting while maintaining privacy by electrically switching between transparent and opaque. As a tunable optical surface scatters, it turns transparent with smooth surfaces like a flat glass; but it turns ‘opaque’ (translucent) with the micro-rough surface. The surface roughness is varied employing surface micro-wrinkling or unfolding using dielectric elastomer actuation. Moreover, this smart window is equipped with another layer of transparent micro-perforated dielectric elastomer actuator (DEA), which acts like Helmholtz resonators serving as a tunable and broader sound absorber. It can electrically tune its absorption spectrum to match the noise frequency for maximum acoustic absorption. The membrane tension and perforation size are tuned using DEA activation to tune its acoustic resonant frequency. Such a novel smart window can be made as cheap as glass due to its simple all-solid-state construction. In future, they might be used in smart green buildings and could potentially enhance urban livability.
APA, Harvard, Vancouver, ISO, and other styles
3

Park, Man Hee. "The Determination Method of Optimal Window Length in DEA Window Analysis." Academic Society of Global Business Administration 16, no. 3 (June 30, 2019): 185–200. http://dx.doi.org/10.38115/asgba.2019.16.3.185.

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

AlKhars, Mohammed A., Ahmad H. Alnasser, and Taqi AlFaraj. "A Survey of DEA Window Analysis Applications." Processes 10, no. 9 (September 12, 2022): 1836. http://dx.doi.org/10.3390/pr10091836.

Full text
Abstract:
This article aims to review, analyze, and classify the published research applications of the Data Envelopment Analysis (DEA) window analysis technique. The number of filtered articles included in the study is 109, retrieved from 79 journals in the web of science (WoS) database during the period 1996–2019. The papers are classified into 15 application areas: energy and environment, transportation, banking, tourism, manufacturing, healthcare, power, agriculture, education, finance, petroleum, sport, communication, water, and miscellaneous. Moreover, we present descriptive statistics related to the growth of publications over time, the journals publishing the articles, keyword terms used, length of articles, and authorship analysis (including institutional and country affiliations). To the best of the authors knowledge, this is the first survey reviewing the literature of the DEA window analysis applications in the 15 areas mentioned in the paper.
APA, Harvard, Vancouver, ISO, and other styles
5

Shawtari, Fekri Ali, Milad Abdelnabi Salem, and Izzeldin Bakhit. "Decomposition of efficiency using DEA window analysis." Benchmarking: An International Journal 25, no. 6 (August 6, 2018): 1681–705. http://dx.doi.org/10.1108/bij-12-2016-0183.

Full text
Abstract:
Purpose The purpose of this paper is to examine empirically the efficiency types of Islamic and conventional banks. It seeks to show whether the efficiency level of conventional and Islamic banks significantly differs from each other. In addition, it investigates the influential factors on each type of efficiency. Design/methodology/approach The paper utilises the data envelopment analysis in its windows version to estimate the efficiency scores reflecting the time variance and compares between banking models. The paper uses pure technical efficiency (TE) and scale efficiency to achieve the objective of the study. In addition, the panel data technique is adopted to assess the determinants of the efficiency of the banks econometrically. Findings The findings of panel regression initially indicate that the pure TE is higher for conventional banks compared to Islamic banks. However, the Islamic banks are more scale efficient than their conventional counterpart. Macro and micro indicators have different impacts on the both types of efficiency. However, the unique factors that show consistent influence on the efficiency types were loans/finance, non-interest income/finance/liquidity and GDP. Furthermore, the determinants are shaped differently for Islamic and conventional banks when the banking model is controlled for. Originality/value This paper examines the efficiency types using a unique window analysis approach to examine the types of efficiency with a longitudinal set of data from 1996 to 2011.
APA, Harvard, Vancouver, ISO, and other styles
6

Gupta, Seema. "Dynamic DEA Model using Window Analysis Approach with Weight Modeling." Journal of Scientific Research 66, no. 04 (2022): 100–106. http://dx.doi.org/10.37398/jsr.2022.660414.

Full text
Abstract:
This paper study dynamic DEA model and proposes weight modeling in window analysis for multi-time period performance evaluation. It uses the weights of inputs and outputs generated as a result of static temporal efficiency evaluation to restrict weight flexibility in dynamic DEA model and observe the efficiencies, thus obtained, over multi-time period. First the optimal range of weights are determined and then it is being applied in different windows to observe the stability and consistency of efficiency evaluations. We also define consistent efficiency index and give numerical illustration to observe the working of proposed model.
APA, Harvard, Vancouver, ISO, and other styles
7

Ghobadi, S., G. R. Jahanshahloo, F. Hosseinzadeh Lotfi, and M. Rostamy-Malkhalifeh. "Efficiency Measure Under Inter-Temporal Dependence." International Journal of Information Technology & Decision Making 17, no. 02 (March 2018): 657–75. http://dx.doi.org/10.1142/s0219622018500050.

Full text
Abstract:
In this paper, a linear programming (LP) model is proposed to estimate the efficiency of a decision-making unit (DMU) in the framework of dynamic Data Envelopment Analysis (DEA). Necessary and sufficient conditions required for characterizing dynamically efficient paths are established. An LP model is proposed to estimate the dynamic cost efficiency (DCE) measure. It is proved that the aggregate CE in an assessment window is a convex combination of CEs of available periods in the assessment window. In addition, it is shown that a DMU in an assessment window is dynamically efficient when the DMU is dynamically cost/revenue efficient. Mathematical relationships between relative, cost, revenue, and profit efficiencies are studied in the framework of dynamic DEA.
APA, Harvard, Vancouver, ISO, and other styles
8

DIKE, IJ. "DEA Window Analysis Efficiency Measurement of Selected Nigerian Bank." NIGERIAN ANNALS OF PURE AND APPLIED SCIENCES 4, no. 1 (August 20, 2021): 176–84. http://dx.doi.org/10.46912/napas.196.

Full text
Abstract:
This study analyzes the performance efficiency of six selected banks in Nigeria for the period 2010 – 2016. DEA window analysis was employed to establish the performance efficiency of the selected banks. The analysis is based on panel data for the period under review. The result of the DEA window analysis for the reviewed period showed that the average efficiency scores under constant returns to scale ranged from 84% to 91%. Under the variable returns to scale, the average efficiency scores ranged from 91% to 95%. The average inefficiency of the selected Nigeria commercial banks under the constant returns to scale model was in the range 9 – 16%. This inefficiency could be attributed to the excess of customers deposits on the balance sheet of the selected banks. The average scale efficiency for the banks was 93%. Guaranty Trust Bank was the most efficient bank on all measures. United Bank for Africa was the most inefficient bank under constant returns to scale and variable returns to scale. It was however, more scale efficient than three other banks, an indication that its inefficiency cannot be attributed to inappropriate scale size.
APA, Harvard, Vancouver, ISO, and other styles
9

Kim, Jin Se, and Sang Joon Lee. "A Static and Dynamic Efficiency Analysis on the Korean Professional Football Club Using DEA and DEA Window." Korean Journal of Sport Management 27, no. 1 (February 28, 2022): 49–68. http://dx.doi.org/10.31308/kssm.27.1.49.

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

Park, Man Hee. "Development and Application of DEA Window System with Dealing Negative Values." Journal of Korea Service Management Society 23, no. 3 (September 30, 2022): 28–48. http://dx.doi.org/10.15706/jksms.2022.23.3.002.

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

Dissertations / Theses on the topic "Window DEA"

1

Koudelka, Petr. "DEA analýza finančních úřadů ČR." Master's thesis, Vysoká škola ekonomická v Praze, 2015. http://www.nusl.cz/ntk/nusl-193090.

Full text
Abstract:
Data envelopment analysis models are common tools to measure efficiency of decision-making unit. This thesis presents several DEA-based approaches and describes data that are collected and closely watched by Czech Tax Offices. Presented methods are used to evaluate Tax Offices. Each Tax Office will be evaluated with efficiency rate by every presented approach. In the last part of this thesis, the Tax Offices will be ordered by achieved results and the methods will be compared.
APA, Harvard, Vancouver, ISO, and other styles
2

Goujon, Anne, C. Samir K, Markus Speringer, Bilal Barakat, Michaela Potancoková, Jakob Eder, Erich Striessnig, Ramon Bauer, and Wolfgang Lutz. "A harmonized dataset on global educational attainment between 1970 and 2060 - An analytical window into recent trends and future prospects in human capital development." Cambridge University Press (CUP), 2016. http://dx.doi.org/10.1017/dem.2016.10.

Full text
Abstract:
We hereby present a dataset produced at the Wittgenstein Centre (WIC) containing comprehensive time series on educational attainment and mean years of schooling (MYS). The dataset is split by 5-year age groups and sex for 171 countries and covers the period between 1970 and 2010. It also contains projections of educational attainment to 2060 based on several scenarios of demographic and educational development. The dataset is constructed around collected and harmonized empirical census and survey data sets for the projection base year. The article present the principles and methodology associated with the reconstruction and the projection, and how it differs from several previous exercises. It also proposes a closer look at the diffusion of education in world regions and how the existing gaps in terms of generations, gender, and geography - hence called the 3Gs - have been evolving in the last forty years.
APA, Harvard, Vancouver, ISO, and other styles
3

Cheong, Choong Wee Vincent. "Data acquisition from volatile memory a memory acquisition tool for Microsoft Windows Vista." Thesis, Monterey, Calif. : Naval Postgraduate School, 2008. http://edocs.nps.edu/npspubs/scholarly/theses/2008/Dec/08Dec%5FCheong.pdf.

Full text
Abstract:
Thesis (M.S. in Computer Science)--Naval Postgraduate School, December 2008.
Thesis Advisor(s): Vidas, Timothy M. "December 2008." Description based on title screen as viewed on January 30, 2009. Includes bibliographical references (p. 103-107). Also available in print.
APA, Harvard, Vancouver, ISO, and other styles
4

Gomes, Rahul. "Incorporating Sliding Window-Based Aggregation for Evaluating Topographic Variables in Geographic Information Systems." Diss., North Dakota State University, 2019. https://hdl.handle.net/10365/29913.

Full text
Abstract:
The resolution of spatial data has increased over the past decade making them more accurate in depicting landform features. From using a 60m resolution Landsat imagery to resolution close to a meter provided by data from Unmanned Aerial Systems, the number of pixels per area has increased drastically. Topographic features derived from high resolution remote sensing is relevant to measuring agricultural yield. However, conventional algorithms in Geographic Information Systems (GIS) used for processing digital elevation models (DEM) have severe limitations. Typically, 3-by-3 window sizes are used for evaluating the slope, aspect and curvature. Since this window size is very small compared to the resolution of the DEM, they are mostly resampled to a lower resolution to match the size of typical topographic features and decrease processing overheads. This results in low accuracy and limits the predictive ability of any model using such DEM data. In this dissertation, the landform attributes were derived over multiple scales using the concept of sliding window-based aggregation. Using aggregates from previous iteration increases the efficiency from linear to logarithmic thereby addressing scalability issues. The usefulness of DEM-derived topographic features within Random Forest models that predict agricultural yield was examined. The model utilized these derived topographic features and achieved the highest accuracy of 95.31% in predicting Normalized Difference Vegetation Index (NDVI) compared to a 51.89% for window size 3-by-3 in the conventional method. The efficacy of partial dependence plots (PDP) in terms of interpretability was also assessed. This aggregation methodology could serve as a suitable replacement for conventional landform evaluation techniques which mostly rely on reducing the DEM data to a lower resolution prior to data processing.
National Science Foundation (Award OIA-1355466)
APA, Harvard, Vancouver, ISO, and other styles
5

Stimson, Jared M. "Forensic analysis of Window's® virtual memory incorporating the system's page-file." Monterey, Calif. : Naval Postgraduate School, 2008. http://edocs.nps.edu/npspubs/scholarly/theses/2008/Dec/08Dec%5FStimson.pdf.

Full text
Abstract:
Thesis (M.S. in Computer Science)--Naval Postgraduate School, December 2008.
Thesis Advisor(s): Eagle, Chris S. "December 2008." Description based on title screen as viewed on February 2, 2009. Includes bibliographical references (p. 89-90). Also available in print.
APA, Harvard, Vancouver, ISO, and other styles
6

Vilà-Giménez, Ingrid. "Non-referential beat gestures as a window onto the development of children’s narrative abilities." Doctoral thesis, Universitat Pompeu Fabra, 2020. http://hdl.handle.net/10803/669319.

Full text
Abstract:
Co-speech gestures are children’s first path towards communication. Further in development, research has primarily focused on the role of iconic gestures in boosting children’s narrative abilities, while less is known about the effects of nonreferential gestures. The main goal of this PhD dissertation is to investigate the scaffolding role of non-referential beat gestures (i.e., rhythmic hand movements that are associated with prosodic prominence in oral discourse) in the development of oral narrative abilities in children. Given the fact that beat gestures act as highlighters of linguistic properties such as rhythm, information focus or discourse structure, we hypothesize that these gestures can help children frame discourse. In order to test this general hypothesis, this thesis includes three empirical studies ––each one described in a separate chapter. Study 1 is a longitudinal study which analyzes the speech and gestures produced by 45 14- to 58-month-old children in naturalistic interactions with their caregivers. Results show that the early production of beats, as opposed to the production of iconic gestures and hand flip gestures (i.e., non-referential gestures performed by turning the wrist of the hand), predicts later narrative abilities at 5 years of age. The other two studies (Study 2 and Study 3) use a between-subjects narrative training task with a pretest–posttest design to investigate whether non-referential beat gestures can be key in bolstering narrative discourse performance in a total of 91 5- to 6-year-old children. While the first study examines whether multimodal training in which children observe beat gestures can contribute to improving their narrative performance in terms of narrative structure, the second study analyzes whether training which encourages children to produce beat gestures ––as opposed to merely observing them–– can have the same effects in terms of narrative structure and fluency. The results of both studies demonstrate that children who observed beat gestures during training (Study 2) and children who were encouraged to produce them (Study 3) showed a significant gain in the quality of their posttest narrative performance as opposed to children who were exposed to the control conditions. Altogether, the results of the abovementioned studies show the importance of a less-studied gesture in children’s language development, i.e., beat gesture, and how this type of non-referential gesture has a strong link to children’s narrative development. While results from the Study 1 demonstrate the predictive role of beats in children’s later narrative abilities, results from Studies 2 and 3 reveal the essential role of training with beat gestures for short-term improvement in children’s narrative discourse performance. Moreover, these findings are relevant not only to understand the value of the multimodal integration between gesture and speech in child development, but also have important methodological implications for teachers and speech therapists working on narrative abilities.
Els gestos de la parla constitueixen una part essencial dels inicis de la comunicació. Més tard en el desenvolupament, la recerca s’ha focalitzat principalment en el paper que tenen els gestos icònics en la promoció de les habilitats narratives dels nens i nenes. Tanmateix, no s’ha fet gaire recerca sobre els efectes dels gestos no referencials. El principal objectiu d’aquesta tesi doctoral és investigar el rol potenciador dels gestos rítmics no referencials (i. e., moviments rítmics de les mans que estan associats amb la prominència prosòdica en el discurs oral) en el desenvolupament de les habilitats narratives orals dels nens i nenes. Tenint en compte que els gestos rítmics actuen com a marcadors de propietats lingüístiques com el ritme, el focus d’informació o l’estructura del discurs, esperem que aquests gestos puguin ajudar els nens i nenes a organitzar el discurs. Per demostrar aquesta hipòtesi general, aquesta tesi inclou tres estudis empírics ––cadascun descrit en un capítol. L’Estudi 1 és un estudi longitudinal que analitza la parla i els gestos produïts per 45 nens i nenes de 14 a 58 mesos en interaccions naturals amb els seus cuidadors. Els resultats mostren que la producció primerenca de gestos rítmics, en comparació amb la producció de gestos icònics i de gestos de volteig de les mans (i. e., gestos no referencials realitzats girant el canell de la mà), prediu les habilitats narratives posteriors, als 5 anys d’edat. Els altres dos estudis (Estudi 2 i Estudi 3) utilitzen una tasca d’entrenament narratiu entre subjectes amb un disseny pretest–posttest per investigar si els gestos rítmics no referencials poden ser essencials per reforçar el discurs narratiu en un total de 91 nens i nenes de 5 a 6 anys. Mentre que el primer estudi analitza si un entrenament multimodal en què els nens i nenes observen gestos rítmics pot contribuir a millorar les seves produccions narratives en termes d’estructura narrativa, el segon estudi analitza si un entrenament en què es motiva els nens i nenes a produir gestos rítmics ––a diferència de la seva simple observació–– pot tenir els mateixos efectes en termes d’estructura narrativa i fluïdesa del discurs. Els resultats dels dos estudis demostren que els nens i nenes que van observar gestos rítmics durant l’entrenament (Estudi 2) i els nens i nenes que van ser motivats a produir-los (Estudi 3) van mostrar un guany significatiu en la qualitat de les seves produccions narratives posteriors, a diferència dels nens i nenes que van ser exposats a les condicions control. En conjunt, els resultats dels estudis mencionats mostren la importància d’un gest menys estudiat en el desenvolupament del llenguatge dels nens i nenes, i. e., el gest rítmic, i com aquest tipus de gest no referencial té un fort lligam amb el desenvolupament narratiu dels nens i nenes. Mentre que els resultats de l’Estudi 1 demostren el rol predictiu dels gestos rítmics en les habilitats narratives més tardanes dels nens i nenes, els resultats dels Estudis 2 i 3 proven que l’entrenament multimodal amb gestos rítmics pot ajudar a millorar a curt termini les produccions narratives dels nens i nenes. A més, aquests resultats són rellevants no només per entendre el valor de la integració multimodal entre gest i parla en el desenvolupament dels nens i nenes, sinó que també tenen implicacions metodològiques importants per als mestres o logopedes que treballin les habilitats narratives.
Los gestos del habla constituyen una parte esencial de los inicios de la comunicación. Más tarde en el desarrollo, la investigación se ha focalizado principalmente en el papel que tienen los gestos icónicos en la promoción de las habilidades narrativas de los niños y niñas. Sin embargo, no se ha hecho mucha investigación sobre los efectos de los gestos no referenciales. El principal objetivo de esta tesis doctoral es investigar el rol potenciador de los gestos rítmicos no referenciales (i. e., movimientos rítmicos de las manos que están asociados con la prominencia prosódica en el discurso oral) en el desarrollo de las habilidades narrativas orales de los niños y niñas. Teniendo en cuenta que los gestos rítmicos actúan como marcadores de propiedades lingüísticas como el ritmo, el foco de información o la estructura del discurso, esperamos que estos gestos puedan ayudar a los niños y niñas a organizar el discurso. Para demostrar esta hipótesis general, esta tesis incluye tres estudios empíricos ––cada uno descrito en un capítulo. El Estudio 1 es un estudio longitudinal que analiza el habla y los gestos producidos por 45 niños y niñas de 14 a 58 meses en interacciones naturales con sus cuidadores. Los resultados muestran que la producción temprana de gestos rítmicos, en comparación con la producción de gestos icónicos y de gestos de volteo de las manos (i. e., gestos no referenciales realizados girando la muñeca de la mano), predice las habilidades narrativas posteriores, a los 5 años de edad. Los otros dos estudios (Estudio 2 y Estudio 3) utilizan una tarea de entrenamiento narrativo entre sujetos con un diseño pretest–postest para investigar si los gestos rítmicos no referenciales pueden ser esenciales para reforzar el discurso narrativo en un total de 91 niños y niñas de 5 a 6 años. Mientras que el primer estudio analiza si un entrenamiento multimodal en el que los niños y niñas observan gestos rítmicos puede contribuir a mejorar sus producciones narrativas en términos de estructura narrativa, el segundo estudio analiza si un entrenamiento en el que se motiva a los niños y niñas a producir gestos rítmicos ––a diferencia de su simple observación–– puede tener los mimos efectos en términos de estructura narrativa y fluidez del discurso. Los resultados de los dos estudios demuestran que los niños y niñas que observaron gestos rítmicos durante el entrenamiento (Estudio 2) y los niños y niñas que fueron motivados a producirlos (Estudio 3) mostraron una ganancia significativa en la calidad de sus producciones narrativas posteriores, a diferencia de los niños y niñas que fueron expuestos a las condiciones control. En conjunto, los resultados de los estudios mencionados muestran la importancia de un gesto menos estudiado en el desarrollo del lenguaje de los niños y niñas, i. e., el gesto rítmico, y cómo este tipo de gesto no referencial tiene un fuerte vínculo con el desarrollo narrativo de los niños y niñas. Mientras que los resultados del Estudio 1 demuestran el rol predictivo de los gestos rítmicos en las habilidades narrativas más tardías de los niños y niñas, los resultados de los Estudios 2 y 3 prueban que el entrenamiento multimodal con gestos rítmicos puede ayudar a mejorar a corto plazo las producciones narrativas de los niños y niñas. Además, estos resultados son relevantes no solo para entender el valor de la integración multimodal entre gesto y habla en el desarrollo de los niños y niñas, sino que también tienen implicaciones metodológicas importantes para los maestros o logopedas que trabajen las habilidades narrativas.
APA, Harvard, Vancouver, ISO, and other styles
7

Wos, Kenneth A. Davidson Kenneth L. "A climatology of polar low occurrences in the Nordic Seas and an examination of katabatic winds as a triggering mechanism." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School; Available from the National Technical Information Service, 1992. http://edocs.nps.edu/npspubs/scholarly/theses/1992/Dec/92Dec_Wos.pdf.

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

Cinti, Mariagrazia. "Quantificazione ed individuazione delle alterazioni dei dati nell'ambito di indagini di Informatica Forense." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amslaurea.unibo.it/2736/.

Full text
Abstract:
Si è voluto ricreare uno scenario di scorretta gestione di un reperto informatico, ideando e successivamente attuando una serie di test al fine di misurare le alterazioni subite dal sistema operativo (Windows XP). Sono state trattate le best practice operative (internazionali) nonché le disposizioni definite dalla normativa vigente (italiana).
APA, Harvard, Vancouver, ISO, and other styles
9

Edwards, Gregory W. "Wind turbine power generation emulation via doubly fed induction generator control." Thesis, Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Dec/09Dec%5FEdwards.pdf.

Full text
Abstract:
Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, December 2009.
Thesis Advisor(s): Julian, Alexander L. Second Reader: Cristi, Roberto. "December 2009." Description based on title screen as viewed on January 28, 2010. Author(s) subject terms: Double Fed Induction Generator (DFIG), Space Vector Modulation (SVM), wind turbine, Field Programmable Gate Array (FPGA), bi-directional power flow. Includes bibliographical references (p. 75). Also available in print.
APA, Harvard, Vancouver, ISO, and other styles
10

Unida, Roberto. "An investigation on the offshore wind energy potential in Italy and its deployment with floating turbines." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

Find full text
Abstract:
The thesis aim is to offer a general assessment of potential of offshore wind deployment in Italy. More specifically, it aids with the identification of the most promising locations and estimates the levelized cost of energy of the areas found suitable. Furthermore, the thesis develops a simple technical feasibility study at one of these sites, which specifically focuses on the design of the wind turbines foundations, considering and comparing different geotechnical solutions. It is been found that, in Italy, the offshore area suitable for the installation of wind farms is approximately 110,000 km2, with an estimated theoretical annual energy production of 188.25 TWh, more than half of the Italian electricity need. Locations identified as promising are the Adriatic Sea, and the Ionian Sea of the Apulia region and the South-West part of Sicily. For these areas the LCOE analysis has yielded values ranging between 90 $/kWh to 130 $/kWh, in line with European average. The case of study indicated that anchors’ cost strongly depends on local met-ocean conditions, as it is found by comparing the results obtained for the Italian case study with Hywind Scotland pilot floating wind farm, used as benchmark. Comparison between two different anchor solutions has also shown that the foundation choice has also a significant impact on the overall cost for a plant set-up.
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Window DEA"

1

Watkins, Dawn L. The spelling window. Greenville, S.C: Bob Jones University Press, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Caicoya, Sylvain. De Windows XP, Windows Vista à Windows 7. Paris: Micro application, 2009.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Mesters, J. P. Windows Vista. Paris: Micro application, 2007.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Traduction, Chabard Laurence, and Volto Bénédicte Traduction, eds. Windows 8. Paris: First interactive, 2012.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Saury, Jean-Georges. Windows Server 2003, Windows Server 2008. Paris: Micro application, 2007.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Windows XP. 2nd ed. Paris: First interactive, 2006.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Windows Vista. Paris: Micro application, 2007.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

McFedries, Paul. Windows 8. Paris: First interactive, 2013.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Windows XP. 3rd ed. Paris: First interactive, 2006.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Windows 7. 2nd ed. Paris: First interactive, 2012.

Find full text
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Window DEA"

1

Sengupta, Atanu, and Sanjoy De. "Measuring Efficiency of Indian Banks Using Window DEA Analysis." In India Studies in Business and Economics, 101–11. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4435-4_8.

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

Prokic, Tanja. "Vom Window-Shopping zum digitalen Bewertungsregime." In Edition Medienwissenschaft, 95–116. Bielefeld, Germany: transcript Verlag, 2022. http://dx.doi.org/10.14361/9783839457498-004.

Full text
Abstract:
Das Schaufenster des 20. Jahrhunderts bildet ein epochemachendes Schema, insofern hier der Touchscreen der vernetzten Mediengesellschaft des 21. Jahrhunderts präfiguriert ist. Das Schaufenster ist wie der Touchscreen ein Display und als solches zeichnet es sich als Schnittstelle aus. Eine Schnittstelle zwischen Innen und Außen, zwischen Absentem und Verborgenem, zwischen Imaginärem und Realem. Im Schaufenster werden Künste, Medientechnologien, Wissenschaften miteinander verschaltet, Affekte hervorgerufen und entsprechend eine ganze Begehrensstruktur ausgeprägt, die konstitutiv für die Aufmerksamkeitsökonomie des 21. Jahrhunderts ist.1 In der Co-Autorschaft von Psychotechnik, experimenteller Psychologie, Gestalttheorie, Designtheorie, Werbewissenschaft, Architektur, den Künsten und Medien wird der kalkulierte Eingriff in den Affekthaushalt auf Basis perzeptiver und psychischer Gesetzmäßigkeiten und damit die Programmierung einer skopischen Subjektivität möglich.2 Skopisch ist diese Subjektivität, insofern es sich bei ihr nicht um einfache Betrachtungsverhältnisse nach dem Schema »Subjekt betrachtet ausgestelltes Objekt« handelt, sondern um die Kommerzialisierung der Blickstruktur, welche die vom Schaufenster erzielte »Bildwirkung« (Casson 1930: 14) als Beachtungsverhältnisse einer neuen Aufmerksamkeitsökonomie installiert. Solche Beachtungsverhältnisse legen, wie exemplarisch an zwei recht unterschiedlichen Phänomenen - nämlich dem Selfie und der Cancel Culture - zu zeigen sein wird, den Grundstein für den invective gaze in der digitalen Medienkultur.
APA, Harvard, Vancouver, ISO, and other styles
3

Chen, Jian-li, and Ling-jie Meng. "Research on Technological Innovation Efficiency of China’s High-Tech Industry Based on Network SBM Model and DEA Window Analysis." In Proceedings of 2013 4th International Asia Conference on Industrial Engineering and Management Innovation (IEMI2013), 897–905. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-40060-5_86.

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

Veith, Michael, Cosima Lindemann, Andreas Kiefer, and Martin Koch. "Windkraft und Fledermausschutz im Wald – eine kritische Betrachtung der Planungs- und Zulassungspraxis." In Evidenzbasiertes Wildtiermanagement, 149–97. Berlin, Heidelberg: Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-65745-4_7.

Full text
Abstract:
ZusammenfassungDer Ausbau der Windenergie findet zunehmend im Wald statt, da hier häufig windhöffige und damit ökonomisch attraktive Standorte zu finden sind. Allerdings ist hier der Konflikt mit dem Artenschutz im Allgemeinen und dem Fledermausschutz im Speziellen besonders hoch. In diesem Beitrag beleuchten wir vor dem Hintergrund des gesetzlich vorgegebenen normativen Rahmens den artenschutzrechtlichen Teil der Windkraftplanung im Wald mit Bezug auf Fledermäuse – von der Untersuchungsplanung über die eingesetzten Methoden bis zur Bewertung. Bezogen auf Fledermäuse stehen hier insbesondere die Vermeidung der direkten Tötung sowie die Verminderung der Beeinträchtigung ihres Lebensraums im Fokus der Betrachtung. Bundesland-spezifische Arbeitshilfen stecken den Untersuchungsumfang, die einzusetzenden Erfassungsmethoden und den räumlichen und zeitlichen Untersuchungsrahmen ab. Sie empfehlen zudem Maßnahmen zur Kompensation potenziell negativer Auswirkungen eines Eingriffs. Ihr Effekt auf die methodische Qualität der Fachbeiträge zu Fledermäusen ist jedoch gering. Meist kommen im Rahmen der speziellen artenschutzrechtlichen Prüfung zu Fledermäusen die Quartierbaumsuche, Netzfang, unterschiedliche Varianten des akustischen Monitorings (aktiv und passiv) sowie die Radiotelemetrie zum Einsatz. Insbesondere bei der bevorzugt empfohlenen akustischen Erfassung mindern zahlreiche methodische Probleme auf der technischen und der analytischen Ebene die Aussagekraft. Auch der Erfolg des Fangs von Fledermäusen mit Netzen hängt von zahlreichen Parametern ab. Die Quartierbaumerfassung lässt sich in ihrem Erfolg deutlich durch die Radiotelemetrie verbessern. Zur sinnvollen Quantifizierung des Lebensraumanspruchs einer Fledermauspopulation jedoch werden mittels Radiotelemetrie in der Regel zu wenige Tiere zu kurz untersucht. Die Bewertung der erhobenen Daten, hier gezeigt anhand akustisch ermittelter Aktivitätsdichten, erfolgt subjektiv, da Bewertungskriterien fehlen. Die am häufigsten empfohlenen und somit umgesetzten Methoden der Konfliktvermeidung und -minimierung sind CEF- (= Continued Ecological Function) und FCS-Maßnahmen (= Favourable Conservation Status) sowie das Gondelmonitoring und die selektive Abschaltung der WEA. Auch diese Maßnahmen entfalten z. T. Schwächen; die Bewahrung und Entwicklung von Waldstandorten als/zu ökologisch wertvollen Lebensräumen sowie die Verminderung der Schlagopferzahl durch spezielle Algorithmen (ProBat-Tool) sehen wir jedoch als sinnvoll an. Abschließend formulieren wir Anregungen zur Verbesserung und Objektivierung der Eingriffsplanung von WEA im Wald.SummaryThe development of wind energy is concentrating in forests, as windy and thus economically favourable sites can often be found here. However, the conflict with species conservation in general and bat conservation in particular is especially high in forests. We here examine the impact assessment on bats in the context of the legally prescribed normative framework in wind farm planning in the forest – from the study design to the methods used and the assessment itself. With regard to bats, the focus here is on avoiding direct killing and reducing the impairment of their habitat. Guidance documents for the German federal states define the extent of the surveys, the survey methods, and the spatial and temporal scope of a survey. They also recommend measures to compensate for potential negative impacts of wind energy plants (WEP). However, their effect on the quality of the expert reports on bats is low. In most cases, the search for roost trees, mist netting, different types of acoustic monitoring (active and passive) and radio tracking are used. In particular, numerous methodological problems at the technical and analytical levels reduce the validity of acoustic surveys. The success of mist netting bats also depends on numerous parameters. The success of roost tree surveys can be significantly improved by radio tracking. However, for a meaningful quantification of the habitat requirements of a bat population, radio tracking is usually used on too few animals for too short a time. The evaluation of the collected data, shown here on the basis of acoustically determined activity densities, is subjective because evaluation criteria are lacking. The most frequently recommended and thus implemented methods of conflict mitigation are CEF (= Continued Ecological Function and FCS (= Favourable Conservation Status) measures as well as nacelle monitoring and selective shut-down of wind turbines. These measures also show some weaknesses, but we consider the maintenance and development of forest sites as or into ecologically valuable habitats, as well as the reduction of the number of bat fatalities by means of specific algorithms (ProBat tool), to be sensible. Finally, we make suggestions for improving and objectifying the impact assessment of wind-energy facilities in forests.
APA, Harvard, Vancouver, ISO, and other styles
5

Majce-Egger, Maria. "Johari-Window." In Wörterbuch der Psychotherapie, 337. Vienna: Springer Vienna, 2000. http://dx.doi.org/10.1007/978-3-211-99131-2_909.

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

Colhoun, O. "Windows." In Lexikon der Medizinischen Laboratoriumsdiagnostik, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-49054-9_3325-1.

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

Zhanxin, Ma, Ma Shengyun, and Ma Zhanying. "Program Design of DEA Based on Windows System." In Lecture Notes in Electrical Engineering, 699–707. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-1839-5_75.

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

Fink, Monika. "Alter Wein in neuen Schläuchen? Zu Techniken und Funktionen der Filmmusik von Ramin Djawadi in Game of Thrones." In „Beyond the Wall”: Game of Thrones aus interdisziplinärer Perspektive, 59–72. Wiesbaden: Springer Fachmedien Wiesbaden, 2022. http://dx.doi.org/10.1007/978-3-658-36145-7_4.

Full text
Abstract:
ZusammenfassungEs besteht wohl kein Zweifel, dass die Filmmusik des Komponisten Ramin Djawadi am weltweiten Erfolg der Serie Game of Thrones einen erheblichen Anteil hat. Djawadi gelang es, eine ideal auf die vielschichtige Phantasiewelt der Serie abgestimmte Klangwelt zu kreieren, die die zahlreichen Unwägbarkeiten und überraschenden Wendungen der Handlungsfolgen musikalisch reflektiert. Seine epische, stark emotionale und vor allem unglaublich bildhafte Tonsprache zeichnet sich, neben allen innovativen Aspekten im Sound Design, durch einen Rückgriff auf Kompositionstechniken aus, deren Ursprünge weit in die Musikgeschichte zurückreichen. In dem Beitrag werden die wesentlichen Techniken der Filmmusik, wie das Underscoring, die Mood-Technik und vor allem die subtile Leitmotivtechnik betrachtet, die sich durch sämtliche Staffeln hindurchzieht und mit deren Hilfe der hochkomplexen Handlung eine Einheit und ein innerer Zusammenhalt gewährt wird. Insbesondere eingegangen wird auf die Titelmusik sowie auf die Szene Light of the Seven, die zur ersten Szene des Finales der sechsten Staffel The Winds of Winter erklingt und die auch ein deutliches Beispiel dafür ist, wie die Wahrnehmung der Zuschauer mithilfe der Musik geleitet werden kann.
APA, Harvard, Vancouver, ISO, and other styles
9

Wittpahl, Volker. "Wie Klima funktioniert und warum sich die Atmosphäre erwärmt." In Klima, 32–52. Berlin, Heidelberg: Springer Berlin Heidelberg, 2020. http://dx.doi.org/10.1007/978-3-662-62195-0_2.

Full text
Abstract:
ZusammenfassungKlima ist im engeren Sinn definiert als das durchschnittliche Wetter bzw. als die statistische Beschreibung relevanter Größen mittels der Ermittlung von Durchschnitt und Variabilität über Zeitspannen im Bereich von Monaten, Jahren oder gar von Millionen von Jahren. Die Weltorganisation für Meteorologie (WMO)10 definiert den Zeitraum zur Mittelung einer Variable mit 30 Jahren; die wesentlichen Variablen sind Temperatur, Niederschlag und Wind. In einem weiter gefassten Sinn ist Klima der Zustand des Klimasystems einschließlich einer statistischen Beschreibung wie zum Beispiel mittlere Jahrestemperatur und -niederschlag aber auch die Eintrittswahrscheinlichkeit bzw. Häufigkeit von Ereignissen wie die mittlere Dauer von Dürren, Sturmhäufigkeit und Starkniederschlagen.
APA, Harvard, Vancouver, ISO, and other styles
10

Eichhorn, Thomas. "Englische Zusammenfassungen der Kapitel 1–9." In Die explorative Tympanoskopie mit Obliteration des runden/ovalen Fensters in der Behandlung des Hörsturzes, 163–72. Berlin, Heidelberg: Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-662-63326-7_10.

Full text
Abstract:
ZusammenfassungAs a whole the effect of an explorative tympanoscopy with sealing the round/oval window(s) in cases of a profound idiopathic unilateral sudden hearing loss (ISSNHL) has been analyzed (data: own study cases and review of literature) and the results have been compared to that of intratympanal steroid injections published elsewhere. In detail the topics of the chapters focused on: Comparison of epidemiologic data, anamnestic and clinical findings including hearing results of our study group with those published Time course of hearing improvement after explorative tympanoscopyand sealing of the round/oval window Compilation of parameters influencing the extent of the initial hearing loss and the hearing gain after surgical therapy Perilymphatic fistulas as an etilogical factor causing a sudden profound hearing loss Comparison of those cases which have been treated by obliteration of the round/oval window with and without corticoid-soaked connective tissue Comparison of patients (data sampled by literature and own cases) treated with intratympanal corticoid injections on the one side or explorative tympanscopy with sealing of the round/oval window on the other side.
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Window DEA"

1

"Window Analysis Using Two-stage DEA in Heart Hospitals." In ISECT-2017, BDAMTE-17, IDCE-2017, CCES-2017, ICHBES-2017, MBPS-2017, ACBES-17, LHHIS-17, LBETM-17, AFPIS-2017 & EFEAM-2017. Dignified Researchers Publication (DiRPUB), 2018. http://dx.doi.org/10.15242/dirpub.dir1017017.

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

Xiang-Juan, Li, and Ke Zun-You. "Evaluation of Testing Software Program Based on DEA with Fuzzy Window." In 2015 14th International Symposium on Distributed Computing and Applications for Business Engineering and Science (DCABES). IEEE, 2015. http://dx.doi.org/10.1109/dcabes.2015.117.

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

BABAEE, SEDDIGHEH, YONGJUN SHEN, ELKE HERMANS, TOM BRIJS, and GEERT WETS. "MEASURING DRIVER'S RELATIVE PERFORMANCE OVER TIME USING DEA AND WINDOW ANALYSIS." In Conference on Uncertainty Modelling in Knowledge Engineering and Decision Making (FLINS 2016). WORLD SCIENTIFIC, 2016. http://dx.doi.org/10.1142/9789813146976_0137.

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

"An Output Oriented Window Analysis Using Two-stage DEA in Heart Hospitals." In ISECT-2017, BDAMTE-17, IDCE-2017, CCES-2017, ICHBES-2017, MBPS-2017, ACBES-17, LHHIS-17, LBETM-17, AFPIS-2017 & EFEAM-2017. Dignified Researchers Publication (DiRPUB), 2018. http://dx.doi.org/10.15242/dirpub.dir1017018.

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

Yang, Zijiang, and Yurong Cao. "Assessing Canadian Schedule I banks using DEA window analysis and the Malmquist Index." In 2010 7th International Conference on Service Systems and Service Management (ICSSSM 2010). IEEE, 2010. http://dx.doi.org/10.1109/icsssm.2010.5530262.

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

Hong, C. F., and Y. H. Lin. "Efficiency of publicly-traded medical device companies in Taiwan - an analysis using window-DEA." In 2015 IEEE International Conference on Industrial Engineering and Engineering Management (IEEM). IEEE, 2015. http://dx.doi.org/10.1109/ieem.2015.7385956.

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

Gamassa, Pascal Kany Prud'ome, and Yan Chen. "Comparison of port efficiency between Eastern and Western African ports using DEA Window Analysis." In 2017 14th International Conference on Service Systems and Service Management (ICSSSM). IEEE, 2017. http://dx.doi.org/10.1109/icsssm.2017.7996148.

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

Fotova Čiković, Katerina. "Dynamic Efficiency Assessment of the European Banking Industry: A Literature Review." In 6th International Scientific Conference – EMAN 2022 – Economics and Management: How to Cope With Disrupted Times. Association of Economists and Managers of the Balkans, Belgrade, Serbia, 2022. http://dx.doi.org/10.31410/eman.s.p.2022.37.

Full text
Abstract:
This paper aims to survey, identify and present the relevant stud­ies and their findings regarding the efficiency of banking systems in Europe with the application of the Data Envelopment Analysis (DEA) window tech­nique approach. Notwithstanding, another goal is to provide a background on the DEA methodology and present the window technique approach and highlight its strengths and limitations. This article implements an extensive literature review of studies that employ the WDEA (window DEA) methodology in the efficiency evaluation of Eu­ropean banking. The conducted literature review has surveyed the Scopus, Web of Science (SSCI and SCI papers) and CROSBI (Croatian Scientific Bib­liography) databases with „Data Envelopment Analysis“, „Window“ and „Bank“ as keywords for the search, which resulted in a total of 89 hits (41 in Scopus, 47 on WoS and 1 on CROSBI). Thereafter, a manual survey of these studies has been conducted, which eventually resulted in 12 papers regard­ing the efficiency of European banking. This study identifies all the relevant previous work regarding the efficiency of European banking with the appli­cation of WDEA (DEA-window technique) as well as a presentation of their used models, the selected variables and their findings. This literature review indicates that the surveyed studies have been pub­lished in the period between 2007 and 2020 and have included the time frame from 1995 to 2017. The longest study includes 13 years, whereas the shortest includes 3 analysed years. The findings primarily show the applicability of WDEA in the literature.
APA, Harvard, Vancouver, ISO, and other styles
9

Yurong Cao and Zijiang Yang. "Using DEA window analysis and the Malmquist index to evaluate the operations of Canadian Schedule I banks." In 2009 IEEE/INFORMS International Conference on Service Operations, Logistics and Informatics (SOLI). IEEE, 2009. http://dx.doi.org/10.1109/soli.2009.5203958.

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

Castanhel, Gabriel Ruschel, Tiago Heinrich, Fabrício Ceschin, and Carlos A. Maziero. "Sliding Window: The Impact of Trace Size in Anomaly Detection System for Containers Through Machine Learning." In XVIII Escola Regional de Redes de Computadores. Sociedade Brasileira de Computação - SBC, 2020. http://dx.doi.org/10.5753/errc.2020.15203.

Full text
Abstract:
Anomaly intrusion detection in Host-based Intrusion Detection System (HIDS) is a process intended to monitor operations on a host to identify behaviors that differ from a “normal ” system behavior. System call based HIDS uses traces of calls to represent the behavior of a system. Due to the volume of data generated by applications and the operating system, sliding windows are applied in order to asses an online environment, allowing intrusions to be detected in real time while being still executed. The respective study explores the impact that the size of the observation window has on Machine Learning (ML) one-class algorithms.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Window DEA"

1

DeSpirito, James. Base Pressure Computations of the DERA Generic Missile Wind Tunnel Model. Fort Belvoir, VA: Defense Technical Information Center, September 2005. http://dx.doi.org/10.21236/ada444636.

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

Wang, Wei, Michael Brown, Matteo Ciantia, and Yaseen Sharif. DEM simulation of cyclic tests on an offshore screw pile for floating wind. University of Dundee, December 2021. http://dx.doi.org/10.20933/100001231.

Full text
Abstract:
Screw piles need to be upscaled for offshore use e.g. being an alternative foundation and anchor form for offshore floating wind turbines, although the high demand of vertical installation forces could prevent its application if conventional pitch-matched installation is used. Recent studies, using numerical and centrifuge physical tests, indicated that the vertical installation force can be reduced by adopting over-flighting which also improved axial uplift capacity of the screw pile. The current study extends the scope to axial cyclic performance with respect to the installation approach. Using quasi-static discrete element method (DEM) simulation it was found that the over-flighted screw pile showed a lower displacement accumulation rate, compared to a pitch-matched installed pile, in terms of load-controlled cyclic tests. Sensitivity analysis of the setup of the cyclic loading servo shows the maximum velocity during the tests should be limited to avoid significant exaggeration of the pile displacement accumulation but this may lead to very high run durations.
APA, Harvard, Vancouver, ISO, and other styles
3

Verhaagen, Nicolaas G. Wind Tunnel Wall Effects on the Flow around a 76/40-deg Double-Delta Wing. Fort Belvoir, VA: Defense Technical Information Center, March 1997. http://dx.doi.org/10.21236/ada327879.

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

Elliott, D., M. Schwartz, G. Scott, S. Haymes, D. Heimiller, and R. George. Atlas de Recursos Eólicos del Estado de Oaxaca (The Spanish version of Wind Energy Resource Atlas of Oaxaca). Office of Scientific and Technical Information (OSTI), April 2004. http://dx.doi.org/10.2172/15009682.

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

Bahar, Dany, Ana María Ibáñez, and Sandra Rozo. Give Me Your Tired and Your Poor: Impact of a Large-Scale Amnesty Program for Undocumented Refugees. Inter-American Development Bank, November 2020. http://dx.doi.org/10.18235/0002893.

Full text
Abstract:
Between 2014 and 2020 over 1.8 million refugees fled from Venezuela to Colombia as a result of a humanitarian crisis, many of them without a regular migratory status. We study the short- to medium-term labor market impacts in Colombia of the Permiso Temporal de Permanencia program, the largest migratory amnesty program offered to undocumented migrants in a developing country in modern history. The program granted regular migratory status and work permits to nearly half a million undocumented Venezuelan migrants in Colombia in August 2018. To identify the effects of the program, we match confidential administrative data on the location of undocumented migrants with department-monthly data from household surveys and compare labor outcomes in departments that were granted different average time windows to register for the amnesty online, before and after the program roll-out. We are only able to distinguish negative albeit negligible effects of the program on the formal employment of Colombian workers. These effects are predominantly concentrated in highly educated and in female workers.
APA, Harvard, Vancouver, ISO, and other styles
6

Hefetz, Abraham, and Gene Robinson. Hormonal and Pheromonal Regulation of Reproduction in the Bumble Bee Bombus terrestris. United States Department of Agriculture, July 1994. http://dx.doi.org/10.32747/1994.7568775.bard.

Full text
Abstract:
Bombus terrestris constitute important pollinators of greenhouse crops. In Israel the species utilized is, whose colonies are reared commercially. This is a primitively social species with a particular colony development. It encompasses two social phases: a eusocial phase in which the queen dominates reproduction, and a competition phase in which workers compete with the queen for the parentage of males. These workers are distinguished by accelerated ovarian development, high production of JH, and elevated levels of dopamine in the brain. Queen-worker conflict is also manifested in overt aggression among all members of the nest. High aggression is correlated with dominance status of the bees and is also correlated with octopamine levels in the brain. After verifying that JH III is the only JH produced by the bees and validating the assay for its measurements (RCA & RIA), we used JH as an indicator of worker reproduction. Queens taken from colonies both before and after the competition phase were equally effective in inhibiting worker reproduction. Moreover, there is only a narrow window, around the competition point, in which workers may have the opportunity to initiate reproduction. Before that point they are inhibited by the dominant queen, while after that point both the queen and those workers with accelerated ovarian development exert strong inhibition on worker nest mates. Thus, "queen dominance deterioration" is not the primary cause in eliciting the queen-worker conflict. Queens convey their presence by means of a chemical signal that is extractable in organic solvent and that is normally spread on the cuticle. Total body extract and body washes, applied on dead virgin queens, were able to inhibit the release of JHin vitro in queenless workers. However, none of the prominent exocrine gland investigated mimicked this function. It is possible that the source of the putative pheromone is an unknown gland, or that it emanates from an assembly of glands. Chemical analyses of the prominent glands revealed a plethora of compounds the function of which should be further investigated. Understanding the social behavior of B. terrestris paves the way to facilitate colony manipulation and to adjust the colonies for specific pollination requirements.
APA, Harvard, Vancouver, ISO, and other styles
7

Derbentsev, V., A. Ganchuk, and Володимир Миколайович Соловйов. Cross correlations and multifractal properties of Ukraine stock market. Politecnico di Torino, 2006. http://dx.doi.org/10.31812/0564/1117.

Full text
Abstract:
Recently the statistical characterizations of financial markets based on physics concepts and methods attract considerable attentions. The correlation matrix formalism and concept of multifractality are used to study temporal aspects of the Ukraine Stock Market evolution. Random matrix theory (RMT) is carried out using daily returns of 431 stocks extracted from database time series of prices the First Stock Trade System index (www.kinto.com) for the ten-year period 1997-2006. We find that a majority of the eigenvalues of C fall within the RMT bounds for the eigenvalues of random correlation matrices. We test the eigenvalues of C within the RMT bound for universal properties of random matrices and find good agreement with the results for the Gaussian orthogonal ensemble of random matrices—implying a large degree of randomness in the measured cross-correlation coefficients. Further, we find that the distribution of eigenvector components for the eigenvectors corresponding to the eigenvalues outside the RMT bound display systematic deviations from the RMT prediction. We analyze the components of the deviating eigenvectors and find that the largest eigenvalue corresponds to an influence common to all stocks. Our analysis of the remaining deviating eigenvectors shows distinct groups, whose identities correspond to conventionally identified business sectors. Comparison with the Mantegna minimum spanning trees method gives a satisfactory consent. The found out the pseudoeffects related to the artificial unchanging areas of price series come into question We used two possible procedures of analyzing multifractal properties of a time series. The first one uses the continuous wavelet transform and extracts scaling exponents from the wavelet transform amplitudes over all scales. The second method is the multifractal version of the detrended fluctuation analysis method (MF-DFA). The multifractality of a time series we analysed by means of the difference of values singularity stregth (or Holder exponent) ®max and ®min as a suitable way to characterise multifractality. Singularity spectrum calculated from daily returns using a sliding 250 day time window in discrete steps of 1. . . 10 days. We discovered that changes in the multifractal spectrum display distinctive pattern around significant “drawdowns”. Finally, we discuss applications to the construction of crushes precursors at the financial markets.
APA, Harvard, Vancouver, ISO, and other styles
8

Geochemical survey of the Devil's Den Roadless Area, Rutland and Windsor counties, Vermont. US Geological Survey, 1985. http://dx.doi.org/10.3133/mf1626c.

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

To the bibliography