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Littérature scientifique sur le sujet « Modello lisrel »

Auteur : Grafiati
Publié le 9 mars 2023
Mis à jour le 10 mars 2023

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Articles de revues sur le sujet "Modello lisrel"

1

Lorenzi, F. « Breve Storia del Metodo Gemellare 2 - Le Attuali Formulazioni del Metodo ». Acta geneticae medicae et gemellologiae : twin research 47, no 1 (janvier 1998) : 57–71. http://dx.doi.org/10.1017/s0001566000000386.

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Il termine LISREL e l'acronimo di LInear Structural RELationship ed è nato inizialmente come nome di un software messo a punto dallo svedese Karl Joreskog e dai suoi collaboratori nei primi anni '70 per stimare, col metodo della massima verosimiglianza, i coefficienti strutturali dei modelli basati su sistemi di equazioni strutturali.Tali modelli, nella elaborazione tramite il LISREL, rappresentano la sistemazione logica, prima ancora che statistica o computeristica, di tecniche di analisi multivariata le cui prime proposte risalgono all'ininzio del secolo; riconducendo ad un unico modello che ne costituisce una geniale sintesi, approcci ed itinerari scientifici fino ad allora distinti e non comunicanti, quali l'analisi fattoriale, i modelli causali e i modelli di misurazione. In particolare rappresentano in questo momento la più completa e sistematica risposta al problema di operazionalizzare in termini di ricerca e di verifica empirica, nel campo delle scienze sociali, la controversa, ma non per questo meno fondamentale, nozione di causalità. Essi sono quindi la reinterpretazione, sistemazione e soprattutto generalizzazione di quelli che negli anni '60 venivano chiamati i modelli causali e che nella prima metà degli anni '70 avevano conosciuto una notevole popolarità fra i sociologi soprattutto attraverso la tecnica della path analysis.
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Huss, M., A. Iseler et U. Lehmkuhl. « Interkultureller Vergleich der Conners-Skalen : Lässt sich die US-amerikanische Faktorenstruktur an einer deutschen Klinikstichprobe replizieren ? » Zeitschrift für Kinder- und Jugendpsychiatrie und Psychotherapie 29, no 1 (février 2001) : 16–24. http://dx.doi.org/10.1024//1422-4917.29.1.16.

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Zusammenfassung Fragestellung: Im Zuge der internationalen Vernetzung kinderpsychiatrischer Forschung kommt der Frage der interkulturellen Vergleichbarkeit von Faktorenstrukturen gängiger Fragebogenverfahren eine zentrale Bedeutung zu. Die vorliegende Studie prüft, ob die US-amerikanische Faktorenstruktur (US-Modell) der Conners Parent Rating Scale (CPRS) an einer deutschen kinderpsychiatrischen Inanspruchnahmepopulation replizierbar ist. Methodik: Die Stichprobe von 1394 Kindern und Jugendlichen wird randomisiert halbiert. An der einen Teilstichprobe wird mittels explorativer Faktorenanalyse ein deutsches Faktorenmodell (D-Modell) entwickelt. Dieses wird im Vergleich mit dem nach Conners (1989) erstellten US-Modell an der zweiten Teilstichprobe mittels konfirmatorischer Faktorenanalyse (LISREL 8) überprüft. Ergebnisse: Das D-Modell stimmt mit dem US-Modell in 87% der Pfadbeziehungen überein. Beide Modelle weisen Einschränkungen der Vorhersagegüte auf. Das D-Modell hat erwartungskonform etwas bessere Vorhersagewerte als das US-Modell (GFI = .81; AGFI = .75 versus GFI = .76; AGFI = .71). Schlussfolgerungen: Verglichen mit anderen Studien zur interkulturellen Generalisierbarkeit von Faktorenstrukturen dimensionaler Verfahren (z.B. De Groot et al., 1994 ) haben die “goodness of fit” Indices für die CPRS insgesamt schlechtere Werte. Dies ist jedoch größtenteils auf Restriktionen im Modell (keine Mehrfachladungen) zurückzuführen. Interkulturelle Abweichungen ergeben sich bei der Skala “Impulsivität/Hyperaktivität”. Die übrigen Skalen lassen sich gut replizieren.
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Müller, Günter F. « Organisationskultur, Organisationsklima und Befriedigungsquellen der Arbeit 1Für wertvolle Hinweise und Anregungen danke ich Dr. Gerhard Blickle und Dr. Hans Winterstein. Dr. Hans Winterstein half überdies bei der Datenerhebung in vier der sieben untersuchten Organisationen. » Zeitschrift für Arbeits- und Organisationspsychologie A&O 43, no 4 (octobre 1999) : 193–201. http://dx.doi.org/10.1026//0932-4089.43.4.193.

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Zusammenfassung. Es wurde eine Studie durchgeführt, um Einflüsse der Kommunikationskultur und des Vertrauensklimas von Organisationen auf den Befriedigungsgehalt der Arbeit zu analysieren. An der Studie nahmen 375 erwerbstätige Personen aus 2 Produktionsbetrieben, 3 Dienstleistungsunternehmen und 2 Bildungseinrichtungen teil. Indikatoren der Kommunikationskultur waren despektierliche “Sprüche”. Das Vertrauensklima und der Befriedigungsgehalt der Arbeit wurden mit selbstentwickelten Skalen gemessen. Eine LISREL-Auswertung zeigt sehr gute Anpassungsqualitäten für ein Modell, das direkte und durch das Vertrauensklima vermittelte Einflüsse der Kommunikationskultur annimmt. Die Verallgemeinerbarkeit des Modells über verschiedene Organisationstypen und Hierarchie-Ebenen hinweg kann nachgewiesen werden. Gleichwohl sind Kommunikationskultur, Vertrauensklima und Befriedigungsgehalt der Arbeit in produzierenden Organisationen insgesamt weniger positiv ausgeprägt als in Dienstleistungsunternehmen oder Bildungseinrichtungen. Ähnliche Unterschiede sind zwischen Mitarbeitern und Führungskräften nachweisbar. Implikationen dieser Ergebnisse werden diskutiert.
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Cevallos Ampuero, Juan Manuel. « Medición de la calidad del servicio de un comedor universitario utilizando SERVQUAL y desarrollo de un modelo de ecuaciones estructurales ». Industrial Data 18, no 1 (23 juin 2016) : 31. http://dx.doi.org/10.15381/idata.v18i1.12064.

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La investigación ha desarrollado una metodología para medir la calidad y elaborar un modelo de calidad del servicio mediante el uso de ecuaciones estructurales. La investigación se aplicó en el comedor de estudiantes de la UNMSM. La metodología consiste en elaborar una encuesta según la técnica SERVQUAL de 22 preguntas y aplicarlas a una muestra representativa. Seguidamente se elabora el Análisis Factorial Exploratorio (AFE) con el objeto de determinar las dimensiones de la calidad del servicio, luego se realiza en Análisis Factorial Confirmatorio (AFC) con el objeto de cuantificar las relaciones entre las variables y las dimensiones; y finalmente, se realiza la determinación del Modelo de Ecuaciones Estructurales (MEE) que permite conocer la relación entre las dimensiones, lo cual constituye el modelo de la calidad del servicio. Para elaborar el AFE se utilizaron los software SPSS y Lisrel; y para el AFC y el MEE se utilizó el software Lisrel.
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Maia, J. A. R., J. Lefreve, G. Beunen et A. Claessens. « A ESTABILIDADE DA APTIDÃO FÍSICA. O PROBLEMA, ESSÊNCIA ANALÍTICA, INSUFICIÊNCIAS E APRESENTAÇÃO DE UMA PROPOSTA METODOLÓGICA BASEADA EM ESTUDOS DE PAINEL COM VARIÁVEIS LATENTES ». Movimento (ESEFID/UFRGS) 5, no 9 (19 septembre 2007) : 58–79. http://dx.doi.org/10.22456/1982-8918.2387.

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O presente ensaio trata o tema da estabilidade é a aptidão física. Discute o conceito de tracking ligado às noções de estabilidade e da predição da performance. Apresenta resultados de varios estudos no dominio da aptidão física e sobre eles aponta problemas metodológicos. Sugere como alternativa o Modelo Simplex Auto-regressivo com variáveis latentes com múltiplos indicadores e erros de medida — modelo que é facilmente resolúvel em programas estatísticos como o LISREL. This essay covers the theme of physical fitness stability. It discusses the concept of tracking connected to the notions of stability and the performance prediction. It presents results from many studies in the field of physical fitness and points out methodological problems about them. It also suggests, as an alternative, the Simplex Self regressive Model with latent variables with multiple indicators and measure errors -model that is easily resolvable in statistical programs as the LISREL.
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Albuquerque, Virgilius de. « Estudo comparativo entre Mplus, AMOS e LISREL em um modelo com dados categóricos e amostra reduzida ». Revista Brasileira de Administração Científica 13, no 1 (18 mai 2022) : 1–15. http://dx.doi.org/10.6008/cbpc2179-684x.2022.001.0001.

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Modelos de equações estruturais podem ser resolvidos mediante o emprego de diversos softwares específicos. Os preceitos subjacentes à teoria assintótica – amostras grandes, variáveis contínuas ou numéricas, e indicadores refletidos – constituem a fundamentação estatística e matemática para a identificação dos parâmetros do modelo. Contudo, nem sempre os estudos empíricos podem ser desenvolvidos nesse cenário ideal. Amostras reduzidas e dados categóricos são comumente encontrados em trabalhos quantitativos nas ciências sociais. O aplicativo Mplus tem enorme aplicabilidade em pesquisas quantitativas que flexibilizam os pressupostos da teoria assintótica. A partir de um modelo de equações estruturais que analisa a efetividade de uma política pública, utilizaremos os softwares Mplus, AMOS, e LISREL, que são amplamente utilizados na resolução de modelos estruturais, e funções de discrepância apropriadas, para verificar a convergência dos parâmetros estruturais em uma pesquisa com amostra pequena e dados categóricos. Nessas situações, de acordo com a literatura especializada, o Mplus é o aplicativo mais apropriado. Verificamos que o processamento dos dados em AMOS com a técnica de bootstrapping apresenta resultados semelhantes ao do Mplus. Portanto, na ausência do Mplus, o uso do AMOS com bootstrapping pode resultar na estimação de parâmetros confiáveis para dados não-numéricos.
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López Ríos, Olga, et Guillaume Wunsch. « Modelo de estructura de covarianzas para el análisis de las diferencias espaciales de la mortalidad mexicana ». Estudios Demográficos y Urbanos 6, no 2 (1 mai 1991) : 379. http://dx.doi.org/10.24201/edu.v6i2.814.

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El análisis causal de los fenómenos demográficos necesita considerar diferentes problemas: el nivel de análisis, la anterioridad temporal de las causas sobre sus efectos, el paso de conceptos a indicadores y los métodos de análisis estadísticos. En este trabajo hemos examinado algunos posibles determinantes de los diferenciales espaciales de la mortalidad en México, utilizando un modelo analítico de caminos con variables latentes. El modelo se ajustó utilizando el programa LISREL, tomando en cuenta los problemas que mencionamos.
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Ravens-Sieberer, Ulrike, Nora Wille, Jennifer Nickel, Veronika Ottova et Michael Erhart. « Wohlbefinden und gesundheitsbezogene Lebensqualität aus einer bevölkerungsbezogenen Perspektive ». Zeitschrift für Gesundheitspsychologie 17, no 2 (avril 2009) : 56–68. http://dx.doi.org/10.1026/0943-8149.17.2.56.

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Zusammenfassung. Bevölkerungsbezogene Untersuchungen des Wohlbefindens von Kindern und Jugendlichen ermöglichen die Identifikation von Risikofaktoren und Risikogruppen für ein beeinträchtigtes Wohlbefinden und gesundheitliche Belastungen. In dieser Arbeit wird am Beispiel dreier internationaler bzw. nationaler bevölkerungsbezogener Studien aufgezeigt, wie sich die komplexen Beziehungen zwischen Wohlbefinden und für das Wohlbefinden relevanten Aspekten unter Verwendung komplexer statistischer Modellierungsansätze untersuchen lassen. Die im Modul „Seelisches Wohlbefinden und Verhalten” des Kinder- und Jugendgesundheitssurveys (BELLA-Studie; n = 1700), der Health Behaviour in School-aged Children (HBSC; n = 7000) und der KIDSCREEN Studie (n = 8000) an 11 bis 18jährigen Kindern und Jugendlichen erhobenen Daten zu ihrem Wohlbefinden, psychischen Problemen, personalen familiären und sozialen Ressourcen, schulischer Umgebung sowie Tabak- und Alkoholkonsum werden dazu ausgewertet. Über die Daten jeder der drei Studien wurde je eine lineare Strukturgleichungsmodellanalyse mit Lisrel durchgeführt. Die drei unterschiedlichen nach theoretischen Vorüberlegungen spezifizierten Lisrel Modelle weisen eine akzeptable Datenanpassung auf. Personale, familiäre und soziale Ressourcen, psychische Probleme und schulische Anpassung erweisen sich als bedeutende Prädiktoren des Wohlbefindens. Es finden sich Hinweise auf eine komplexe und reziproke Natur der Beziehung zwischen Wohlbefinden und Tabak- bzw. Alkoholkonsum. Die Überprüfung der spezifizierten komplexen Einflussfaktorenmodelle mit LISREL bestätigt die Ergebnisse bisheriger Untersuchungen detaillierter Aspekte der Korrelate des Wohlbefindens. Die Ergebnisse sind mit theoretischen Arbeiten zum Wohlbefinden vereinbar.
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Ribeiro, Roberto Name, et Mirta Noemi Sataka Bugarin. « Fatores determinantes e evolução da economia submersa no Brasil ». Estudos Econômicos (São Paulo) 33, no 3 (septembre 2003) : 435–66. http://dx.doi.org/10.1590/s0101-41612003000300002.

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O presente estudo visa determinar os principais fatores econômicos que estimulam a atividade econômica submersa do Brasil e analisar a sua evolução durante o período 1994-1999. A metodologia consiste na utilização do modelo MIMIC, ou de múltiplas causas e múltiplos indicadores, desenvolvido por Joreskog e Goldberger (1975) e estimado mediante o LISREL de Joreskog e Sorbon (1993). Depreende-se da análise, primeiro, que a carga tributária, o grau de regulamentação da economia e a taxa de desemprego atuam como fortes fatores determinantes da atividade subterrânea no País e, segundo, que a evolução do índice da economia submersa, estimado pelo modelo, apresenta um nítido crescimento durante o período de análise.
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Lanza, Andrea, Antonella Pellegrino et Giuseppina Simone. « La definizione del costrutto di eterogeneitŕ e il legame eterogeneitŕ-performance ». ECONOMIA E POLITICA INDUSTRIALE, no 2 (juin 2009) : 105–29. http://dx.doi.org/10.3280/poli2009-002006.

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Although heterogeneity has gained broad acknowledgement as a crucial phenomenon in the resource-based perspective, its relevance, whether as a source of inter-firm differences or of differences in firms' performance, has often been taken for granted rather been empirically assessed. Further, heterogeneity has been accepted as a self-explanatory concept instead of being studied and clarified as a construct for empirical research. Therefore, the goal of this paper is to define the heterogeneity construct and to eventually link the latter to firms' performances. A research on a 132 firms sample drawn from the Italian tool machine industry has been carried out to pursue this task. By means of a Structural Equation Model (LISREL) a 3-dimension construct has emerged; the heterogeneity construct dimensions are: contextuality, complexity and intertwinedness. The impact of heterogeneity on firms' performance has also been confirmed by means of LISREL. . Keywords: resource-heterogeneity, construct development, competitive advantage, Structural Equations Models Parole chiave: eterogeneitŕ delle risorse, sviluppo del costrutto, legame eterogeneitŕvantaggio competitivo, modelli di equazioni strutturali . Jel Classification: M100
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Thèses sur le sujet "Modello lisrel"

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VITTADINI, GIORGIO. « L'indeterminatezza del modello lisrel ». Doctoral thesis, Università degli Studi di Trento, 1987. http://hdl.handle.net/10281/46520.

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Nel dibattito inerente l'analisi fattoriale particolare attenzione ha avuto il tema della non unicità delle sue soluzioni. Alcuni autori hanno affrontato il tema dell'identificabilità del modello, ricercando condizioni necessarie e sufficienti perchè, data la distribuzione delle variabili osservate, i valori dei parametri del modello siano unici. Altri hanno messo in luce il problema dell'indeterminatezza dei valori dei fattori per cui, in generale, le soluzioni non sono uniche anche qualora i parametri del modello siano perfettamente identificabili. Un secondo argomento di ricerca inerente l'analisi fattoriale è stato quello della costruzione di modelli derivati dal modello fattoriale ma caratterizzati da maggior generalità. La tesi, oltre a descrivere le caratteristiche del modello lisrel in relazione agli altri modelli, mette in luce alcuni aspetti inediti del problema dell'identificabilità dei suoi parametri. La successiva individuazione delle condizioni necessarie e sufficienti per l'esistenza di una soluzione del modello permette di identificare che sotto il profilo analitico l'indeterminatezza delle variabili latenti è dovuta all'esistenza di una componente variabile nella soluzione stessa. Infine, la costruzione della matrice di covarianza tra soluzioni differenti porta ad individuare una misura dell'indeterminatezza e ad analizzare le relazioni con gli autovalori della matrice di covarianza delle soluzioni. La riflessione sui risultati raggiunti e una applicazione empirica permettono di rivelare l'esistenza di covarianze negative tra variabili latenti di soluzioni differenti
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Ruge, Marcus, et Hans Gerhard Strohe. « Analyse von Erwartungen in der Volkswirtschaft mit Partial-Least-Squares-Modellen ». Universität Potsdam, 2008. http://opus.kobv.de/ubp/volltexte/2008/2701/.

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Der statistische Diskussionbeitrag untersucht, ob und wie sich Erwartungen und Stimmungen in der Wirtschaft bilden bzw. von welchen volkswirtschaftlichen Größen sie abhängen. Als Methodik werden Partial Least Squares (PLS) Modelle genutzt, eine Modellklasse der Pfadanalyse mit latenten Variablen. Die verwendeten Daten wurden vom Ifo-Institut und aus der amtlichen Statistik entnommen.
This paper analyses the development of sentiments and expectations in the German economy. The issue is how these expectatons are influenced by major macroeconomic variables like investments or unemployment. Several Partial Least Squares models (PLS) are used to estimate the relations. The data is derived from the German Ifo Institut and the official statistic.
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Dalbianco, Leandro. « Simulação hidrossedimentológica com o modelo Lisem em uma pequena bacia hidrográfica rural ». Universidade Federal de Santa Maria, 2013. http://repositorio.ufsm.br/handle/1/3342.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Hydrossedimentological monitoring and modeling have been used as important tools to evaluate and simulate the hydrosedimentological processes in rural watersheds, in order to effectively propose conservation practices in environmentally sensitive locations. The objective of this research was to evaluate the performance of a physically based hydrological model (LISEM - Limburg Soil Erosion Model) in quantifying runoff and erosion in a rural catchment with high spatial variability (horizontally and vertically) physical and hydrological characteristics of the soil. The catchment has an area of 1.19 km2 and is situated in the northeastern region of the Rio Grande do Sul state, Brazil. Soils are characterized by reduction of water flow in the vertical soil profile either by the small thickness (Entisols and Inceptisols) or textural gradient between horizons (Ultisols) - and are associated with variations of relief, which is composed of soft hills in the top section and mountainous in the bottom section of the catchment. The predominant land use is tobacco farming (Nicotiana tabacum L.), where the surface layer of the soil is tilled to form ridges. In the first stage of the study, five slopes of the basin used for tobacco cultivation were sampled to characterize the physical and hydraulic properties at different points in the relief (top, middle slope and lowland) and four soil layers (0.00 to 0.04, from 0.20 to 0.24, from 0.40 to 0.44 and from 0.60 to 0,64 m). Field trials were also conducted to determine the infiltration rate on the slopes, and equations were also established to estimate the saturated hydraulic conductivity in each layer of soil sampled. In the second step, the LISEM model was calibrated to represent the hydrograph and sedimentograph of 20 rainfall events monitored in the river mouth from 2009 to 2012. The results of the first stage show that there is horizontal and vertical variability of physical and hydraulic properties on the slopes, being that the hillsides have a higher saturated hydraulic conductivity due to its coarser texture. Both the hydraulic conductivity and the infiltration rate were effective in identifying the horizontal variability of water flow on the slopes. The hydraulic conductivity can be estimated with good accuracy when variables from subsoil layers, for example, the total sand content, are used. The results of the second stage of the study revealed that the LISEM had a good performance in modeling the hydrograph. However, it was not possible to represent the sedimentograph, and there was an overestimate in sediment production. The model s equations related to erosion do not represent the dynamics that occur in this catchment.
O monitoramento e a modelagem hidrossedimentológica têm sido utilizados como ferramentas importantes para avaliar e simular os processos hidrossedimentológicos em bacias hidrográficas rurais, com o intuito de propor, de forma eficaz, práticas conservacionistas em locais ambientalmente frágeis. O objetivo desta pesquisa foi avaliar o desempenho de um modelo hidrológico de base física (LISEM Limburg Soil Erosion Model) em quantificar o escoamento superficial e o processo erosivo em uma bacia hidrográfica rural com grande variabilidade espacial (no sentido horizontal e vertical) das características físico-hídricas de solo. A bacia hidrográfica possui 1,19 km2 e está situada na região nordeste do estado do Rio Grande do Sul, Brasil. Os solos são caracterizados pela redução do fluxo de água na direção vertical do perfil de solo seja pela pequena espessura (Neossolos e Cambissolos) ou pelo gradiente textural entre horizontes (Argissolos) e estão associados às variações do relevo, que é ondulado na fração superior e montanhoso na fração inferior da bacia. O uso do solo predominante é o cultivo do tabaco (Nicotiana tabacum L.), em que a camada superficial do solo é revolvida para a construção de camalhões. Na primeira etapa do estudo, cinco encostas da bacia utilizadas para o cultivo do tabaco foram amostradas para caracterização das propriedades físico-hídricas em diferentes pontos do relevo (topo, meia encosta e várzea) e em quatro camadas de solo (0,00 a 0,04, 0,20 a 0,24, 0,40 a 0,44 e 0,60 a 0,64 m). Também foram realizados ensaios de campo para determinação da taxa de infiltração básica nas encostas e, ainda, foram construídas equações para estimativa da condutividade hidráulica saturada em cada camada de solo amostrada. Na segunda etapa, o modelo LISEM foi calibrado para representar o hidrograma e o sedimentograma de 20 eventos monitorados no exutório da bacia entre no período de 2009 a 2012. Os resultados da primeira etapa comprovam que há variabilidade horizontal e vertical das propriedades físico-hídricas nas encostas, sendo que a meia encosta apresenta maior condutividade hidráulica saturada devido à textura mais grosseira neste local. Tanto a condutividade hidráulica quanto a taxa de infiltração básica foram eficazes em identificar a variabilidade horizontal do fluxo de água nas encostas. A condutividade hidráulica saturada pode ser estimada com boa precisão quando são usadas variáveis das camadas subsuperficiais do solo como, por exemplo, o teor de areia total. Os resultados da segunda etapa do estudo revelaram que o LISEM apresentou bom desempenho na modelagem do hidrograma. No entanto, não foi possível a representação do sedimentograma, sendo que houve superestimativa da produção de sedimentos. As equações do modelo relacionadas com o processo erosivo não representam a dinâmica que ocorre nesta bacia hidrográfica.
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Huang, Yuqin, et 黃瑜琴. « Two essays on the exchange-listed volatility derivatives ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B43278711.

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Chen, Jie, et 陈洁. « Managerial incentive contracts in newly listed firms ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B47179065.

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Newly listed firms have a short history of stock value, and may initially not rely on stock price information in incentive contracting as much as seasoned firms. In this thesis, I examine managerial incentive contracts in newly listed firms by comparing CEO compensation between IPO firms and seasoned firms. For IPOs listed on NYSE from 1993 to 2001, a matching sample of seasoned firms was obtained according to criteria in industry, size and book-to-market ratio. By examining the multi-dimensions of CEO incentives, including cash compensation, option grants, stock ownership, and dismissal for the first six years after listing, I document significant differences between IPOs and seasoned firms. I find that while the sensitivity of short-term incentive pay to shareholder return is lower in IPOs than in seasoned firms, long-term incentives from CEO stock ownership are significantly more important in newly listed firms. Moreover, although CEO turnover in an IPO firm is lower, it depends on both stock-price return and accounting performance. These IPO-seasoned differences diminish over time and disappear in three to five years. My findings suggest that to motivate the manager of a newly listed firm, the board avoids short-term uncertainty associated with new stocks while emphasizing the role of shareholder value in the long run.
published_or_final_version
Economics and Finance
Master
Master of Philosophy
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Sugawara, Luciana Miura. « Avaliação de modelo agrometeorológico e imagens NOAA/AVHRR no acompanhamento e estimativa de produtividade de soja no Estado do Paraná ». Instituto Nacional de Pesquisas Espaciais, 2001. http://urlib.net/dpi.inpe.br/lise/2002/11.18.18.05.

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O presente trabalho tem por objetivo desenvolver um modelo para acompanhamento e estimativa da produtividade da cultura da soja (Glycine max L. Merril)em um sistema de informações geográficas (SIG), a partir de um modelo agrometeorológico pontual e imagens NOAA-AVHRR. A integração do modelo e da base de dados foi realizada através do aplicativo SPRING e os cálculos foram executados por meio do módulo de programação do SPRING, denominado LEGAL. A área de estudo foi o Estado do Paraná e as estimativas foram geradas, ao nível municipal, para os anos safra de 1996/97, 1997/98 e 1998/99. Mosaicos quinzenais de imagens NOAA-AVHRR, com resolução espacial de 8 x 8 km, transformados em imagens NDVI, foram utilizados como componente espectral no modelo agrometeorológico, visando estimar o índice de área foliar (IAF). O modelo desenvolvido utiliza parâmetros agronômicos e meteorológicos para cálculo da produtividade máxima ou potencial. Esta produtividade é então penalizada quando a demanda hídrica da cultura não é suprida adequadamente, gerando a produtividade real estimada. A análise da comparação desta estimativa com os valores de produtividade divulgados pela Secretaria de Agricultura e Abastecimento do Paraná (SEAB), ao nível municipal, foi feita através do teste "t" para pares de observação, e o resultado para cada ano safra foi: a)em 1996/97 o modelo subestimou a produtividade em relação à estimativa da SEAB em 59kg/ha (t=-2,91; alfa<0,05); b)em 1997/98 a estimativa do modelo e da SEAB não apresentaram diferença significativa (t=1,46; alfa>0,05); e em 1998/99 o modelo superestimou a produtividade em 192kg/ha (t=7,59; alfa<0,05). Isso demonstra que o modelo foi bastante satisfatório na estimativa da produtividade de soja e requer apenas pequenos ajustes. Através do índice de penalização, gerado quinzenalmente pelo modelo, foi possível fazer o acompanhamento das condições de crescimento e desenvolvimento da cultura da soja, detectando-se deficiências hídricas relevantes ao longo da estação de crescimento em cada ano safra. O aplicativo SPRING e seu módulo LEGAL foram satisfatórios na integração do modelo e na realização dos cálculos de produtividade da soja. As imagens NOAA-AVHRR não se mostraram satisfatórias para estimar o IAF, de tal forma que se utilizou dados da literatura para estimar este parâmetro dentro do cálculo da produtividade.
The objective of the present work was to develop a model to monitor and estimate soybean (Glycine max L. Merril)crop yield in a geographic information system (GIS)based on a punctual agrometeorological model and NOAA/AVHRR images. The integration of the model and the database was performed using the SPRING software and calculations were executed through the SPRING module denominated LEGAL. The study area is the Paraná State and estimates were generated at the municipality level, for the crop years of 1996/97, 1997/98 and 1998/99. Mosaics of 15 days NOAA/AVHRR images, with spatial resolution of 8 x 8km, transformed into NDVI images, were used as the spectral component of the agrometeorological model in order to estimate the leaf area index (LAI). The developed model uses agronomic and meteorological parameters to calculate maximum or potential yield. Whenever the crop water demand is not adequately supplied this yield is penalized and actual yield is estimated. Comparative analysis between the yield estimated by the model and the yield provided by the Secretaria de Agricultura e Abastecimento do Paraná (SEAB), at the municipality level, was performed using the paired comparison t test and the results for each crop year were as follow: a)in 1996/97 the model underestimated the yield in relation to the SEAB estimate by 59 kg.ha$^{-1}$ (t=-2.91; a<0.05); in 1997/98 yield estimate of both model and SEAB were not significantly different from each other (t=1.46; a>0.05); and, in 1998/99 the model overestimated yield by 192 kg.ha$^{-1}$ (t=7.59; a<0.05). This demonstrates that the model estimated quite satisfactory the soybean yield and requires only minor adjustments. Through the penalization index, generated every 15 days, it was possible to monitor soybean crop grow and development conditions detecting relevant water deficits over the crop growing season in each year. The SPRING software and its LEGAL module performed satisfactory in both model integration and soybean yield calculations. The NOAA/AVHRR images did not performed satisfactory in the LAI estimation and, therefore, data from the literature were alternatively used to estimate this parameter in yield calculation.
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Tierno, Mafalda Vinagre. « Corporate governance and portuguese listed companies' performance ». Master's thesis, Instituto Superior de Economia e Gestão, 2014. http://hdl.handle.net/10400.5/11398.

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Mestrado em Finanças
Através da avaliação do impacto das teorias de governo das sociedades nas empresas cotadas em Portugal e do seu desenvolvimento em Portugal, esta dissertação ajuda a compreender como a performance das empresas cotadas em Portugal se relaciona com as variáveis de governo das sociedades. Este estudo baseia-se numa amostra de 38 empresas Portuguesas entre os anos 2005 e 2012. As principais conclusões são que percentagens mais elevadas de independência nos conselhos de administração evidenciam maiores níveis de performance, e que a dualidade de funções de CEO e Chairman demonstra benefícios na performance das empresas. Também verificámos que o modelo Latino têm vindo a perder observações para o modelo Anglo-Saxónico, e adicionalmente, verificámos que a maioria das empresas cotadas em Portugal são controladas por famílias.
Through the evaluation of the impact of corporate governance theories on Portuguese Listed Companies and its development on Portugal, this dissertation helps to understand how does performance in Portuguese listed companies relates to Corporate Governance variables. This study, is based on a sample of 38 Portuguese firms, during the period of 2005 to 2012. The main conclusions are the higher levels of board independence that evidenced higher levels of performance, and the CEO and Chairman role duality showed benefits on companies' performance. Also, the Latin model systems have been losing observations to the Anglo-Saxon model, additionally, statistically the majority of Portuguese Listed companies are controlled by families.
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Hemesath, Peter Schuck. « Um modelo de an?lise de viabilidade para desenvolvimento de componentes ». Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2006. http://tede2.pucrs.br/tede2/handle/tede/5071.

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Made available in DSpace on 2015-04-14T14:49:14Z (GMT). No. of bitstreams: 1 418602.pdf: 874285 bytes, checksum: 2f440931163dba272efc1b7262dc5cf5 (MD5) Previous issue date: 2006-03-23
O acelerado crescimento e a competi??o pelo mercado t?m levado empresas a buscarem formas de continuamente aumentar a qualidade e produtividade nos seus processos de desenvolvimento de software. Uma forma para se otimizar o processo de desenvolvimento de software ? a ado??o de t?cnicas de reuso de software como Desenvolvimento Baseado em Componentes (DBC) que abrange preocupa??es como o aumento da produtividade e a redu??o dos custos com qualidade. Mas ser? o desenvolvimento baseado em componentes, por si s?, garantia de beneficio econ?mico, ou seja, os custos de compra/integra??o de componentes reutiliz?veis ser?o sempre menores do que o custo de desenvolvimento das mesmas funcionalidades para uma dada aplica??o? E o desenvolvimento de um componente reutiliz?vel ser? garantia de recupera??o do investimento realizado para cria??o do mesmo? Neste contexto, o presente trabalho apresenta uma proposta de modelo de an?lise de viabilidade para a cria??o de componentes, que com base em uma s?rie de entradas qualitativas e quantitativas, prov? proje??es de retorno sobre o investimento na cria??o de componentes. Tal modelo tem como prop?sito servir como ferramenta de aux?lio ? tomada de decis?o para os engenheiros de software envolvidos em programas de desenvolvimento de componentes reutiliz?veis.
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Shen, Gensheng University of Ballarat. « The determinants of capital structure in Chinese listed companies ». University of Ballarat, 2008. http://archimedes.ballarat.edu.au:8080/vital/access/HandleResolver/1959.17/12728.

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Traditional financial theories see capital structure as a result of mainly financial, tax and growth factors (Modigliani & Miller, 1958). But corporate governance theories (Jensen & Meckling, 1976) and business strategy theories (Barton & Gordon, 1988) suggest that ownership structure and ownership concentration, product diversification and asset specificity may also influence capital structure. Focusing on the examination of the determinants of capital structure in Chinese listed companies, this research goes beyond financial factors and considered business strategy and corporate governance approaches, and their impact on capital structure, in a transitioning Chinese context where institutions, expertise and regulatory processes are different to, but converging on, Western approaches. A panel data set of 1,098 Chinese listed companies for the period of 1991 to 2000 was collected from published sources, and conventional and innovative econometric methodologies were used to model a range of relationships between capital structure and its financial and non-financial determinants. The statistical approaches used in this study included Ordinary Least Squares Model and also Linear Mixed Model, which is a powerful tool to examine panel data where independence of explanatory variables is not assumed. The analysis also involved Hox’s model building procedures to measure model fit. The capital structure of listed companies in both the Shenzhen Stock Exchange and the Shanghai Securities Exchange is positively related to a firm’s tax rate, growth and capital intensity and negatively related to a firm’s profit and size. Other financial factors such as tangibility, risk and duration are non-significant. The capital structure of listed companies, particularly in the Shenzhen Stock Exchange, is positively related to product diversification and negatively related to asset specificity. The capital structure of listed companies in the Shanghai Securities Exchange is positively related to government ownership and ownership concentration of the largest shareholder and negatively related to legal person ownership and ownership concentration of the ten largest shareholders. The data and modelling support financial and non-financial determinants of capital structure. In particular, information asymmetry, business diversity and asset specificity have a significant impact on capital structure. In addition the empirical work in the study supports agency cost explanations of debt and equity. Finally the research demonstrates that the two main financial markets in China, Shenzhen and Shanghai, have operated differently but are converging towards a common norm. The research contributes to the general field of capital structure and provides valuable insights into the nature of the Chinese firm and the evolution of the Chinese financial system.
Doctor of Philosophy
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Shen, Gensheng. « The determinants of capital structure in Chinese listed companies ». Thesis, University of Ballarat, 2008. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/66203.

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Traditional financial theories see capital structure as a result of mainly financial, tax and growth factors (Modigliani & Miller, 1958). But corporate governance theories (Jensen & Meckling, 1976) and business strategy theories (Barton & Gordon, 1988) suggest that ownership structure and ownership concentration, product diversification and asset specificity may also influence capital structure. Focusing on the examination of the determinants of capital structure in Chinese listed companies, this research goes beyond financial factors and considered business strategy and corporate governance approaches, and their impact on capital structure, in a transitioning Chinese context where institutions, expertise and regulatory processes are different to, but converging on, Western approaches. A panel data set of 1,098 Chinese listed companies for the period of 1991 to 2000 was collected from published sources, and conventional and innovative econometric methodologies were used to model a range of relationships between capital structure and its financial and non-financial determinants. The statistical approaches used in this study included Ordinary Least Squares Model and also Linear Mixed Model, which is a powerful tool to examine panel data where independence of explanatory variables is not assumed. The analysis also involved Hox’s model building procedures to measure model fit. The capital structure of listed companies in both the Shenzhen Stock Exchange and the Shanghai Securities Exchange is positively related to a firm’s tax rate, growth and capital intensity and negatively related to a firm’s profit and size. Other financial factors such as tangibility, risk and duration are non-significant. The capital structure of listed companies, particularly in the Shenzhen Stock Exchange, is positively related to product diversification and negatively related to asset specificity. The capital structure of listed companies in the Shanghai Securities Exchange is positively related to government ownership and ownership concentration of the largest shareholder and negatively related to legal person ownership and ownership concentration of the ten largest shareholders. The data and modelling support financial and non-financial determinants of capital structure. In particular, information asymmetry, business diversity and asset specificity have a significant impact on capital structure. In addition the empirical work in the study supports agency cost explanations of debt and equity. Finally the research demonstrates that the two main financial markets in China, Shenzhen and Shanghai, have operated differently but are converging towards a common norm. The research contributes to the general field of capital structure and provides valuable insights into the nature of the Chinese firm and the evolution of the Chinese financial system.
Doctor of Philosophy
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Livres sur le sujet "Modello lisrel"

1

Lindén, Lena. Developmental change and linear structural equations : Applications of LISREL models. Stockholm : Almqvist & Wiksell International, 1986.

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Kleidon, Allan W. Round-the-clock trading : Evidence from UK cross-listed securities. London : London School of Economics, Centre for Economic Performance, 1994.

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Kleidon, Allan W. Round-the-clock trading : Evidence from U.K. cross-listed securities. Cambridge, MA : National Bureau of Economic Research, 1993.

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Chan, Ka-Keung Ceajer. Information, trading and stock returns : Lessons from dually-listed securities. Cambridge, MA : National Bureau of Economic Research, 1994.

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Zhongguo shang shi gong si fa zhan gui mo yan jiu : Development study on firm scale of listed companies in China. Wuhan : Hua zhong ke ji da xue chu ban she, 2006.

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Zhang, Changzheng. Manipulation effect of managerial discretion on managerial compensation : Evidence from listed firms in China. Hauppauge, N.Y : Nova Science Publishers, 2009.

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Zhang, Changzheng. Manipulation effect of managerial discretion on managerial compensation : Evidence from listed firms in China. Hauppauge, N.Y : Nova Science Publishers, 2009.

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E, Rumelhart David, dir. Explorations in parallel distributed processing : A handbook of models, programs, and exercises. Cambridge, Mass : MIT Press, 1988.

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E, Rumelhart David, dir. Explorations in parallel distributed processing : A handbook of models, programs, and exercises. Cambridge, Mass : MIT Press, 1990.

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McClelland, James L. Explorations in parallel distributed processing : A handbook of models, programs, and exercises. Cambridge, Mass : MIT Press, 1989.

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Chapitres de livres sur le sujet "Modello lisrel"

1

Wendler, Tilo. « Kausalanalyse mit LISREL-Modellen ». Dans Modellierung und Bewertung von IT-Kosten, 109–62. Wiesbaden : Deutscher Universitätsverlag, 2004. http://dx.doi.org/10.1007/978-3-322-90304-4_7.

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Westland, J. Christopher. « LISREL and Its Progeny ». Dans Structural Equation Models, 47–60. Cham : Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-16507-3_4.

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3

Schneeweiß, H. « Modelle mit Latenten Variablen : Lisrel Versus PLS ». Dans Wirtschaftswissenschaftliche Beiträge, 100–125. Heidelberg : Physica-Verlag HD, 1990. http://dx.doi.org/10.1007/978-3-662-12578-6_6.

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Bischoff, Alfred. « Möglichkeiten von PLS und LISREL zur Schätzung latenter 2-Block-Modelle ». Dans Die Strukturierung von Käufer-Produkt-Beziehungen mit Hilfe der allgemeinen Komponentenanalyse, 107–18. Heidelberg : Physica-Verlag HD, 1988. http://dx.doi.org/10.1007/978-3-642-51522-4_7.

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Kotha, Suresh, Bhatt Vadlamani et Anil Nair. « Generic Strategy Research : Application of LISREL and Smallest Space Analysis ». Dans Statistical Models for Strategic Management, 29–53. Boston, MA : Springer US, 1997. http://dx.doi.org/10.1007/978-1-4757-2614-5_2.

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Roos, Johan, George S. Yip et Johny K. Johansson. « Using Partial Least Squares and LISREL to Research International Strategies ». Dans Statistical Models for Strategic Management, 111–31. Boston, MA : Springer US, 1997. http://dx.doi.org/10.1007/978-1-4757-2614-5_5.

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Hagedoorn, John, Bert Sadowski et Jos Schakenraad. « The Effect of Strategic Technology Alliances on Company Performance : A LISREL Approach ». Dans Statistical Models for Strategic Management, 309–29. Boston, MA : Springer US, 1997. http://dx.doi.org/10.1007/978-1-4757-2614-5_14.

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Scott, Darrel. « Financial Reporting for Small Listed Companies ». Dans New Models of Financing and Financial Reporting for European SMEs, 107–15. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-02831-2_9.

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Slamet, Adityawan, Endang Ernawati et Werner Ria Murhadi. « Factors Affecting the Capital Structure of Non-financial Business Entities Listed in the IDX for the 2016–2020 Period ». Dans Proceedings of the 19th International Symposium on Management (INSYMA 2022), 118–25. Dordrecht : Atlantis Press International BV, 2022. http://dx.doi.org/10.2991/978-94-6463-008-4_16.

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AbstractThis research aims to analyze the determinants of a firm’s factors that influence capital structure. The variables used were profitability, growth, tangibility, non-debt tax shield, liquidity, and size. This research used a quantitative approach by using multiple linear regression. This research samples were from all non-financial sector companies listed on Indonesia Stock Exchange that issued financial statements in 2016–2020 and were not under the delisting process. The final samples utilized in this research were equal to 1,650 observations. This research used the fixed effect model, and the research findings indicate that the non-debt tax shield has no significant effect on capital structure, while profitability, growth, tangibility, liquidity, and size have a significant effect on debt in all non-financial sector companies listed on the Indonesia Stock Exchange for the period 2016–2020.
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Güney, İbrahim Ethem, Abdullah Kazdal, Doruk Küçüksaraç et Muhammed Hasan Yılmaz. « Exchange Rate Sensitivity of Firm Value : Evidence from Nonfinancial Firms Listed on Borsa Istanbul ». Dans Handbook of Research on Emerging Theories, Models, and Applications of Financial Econometrics, 141–65. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-54108-8_6.

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Actes de conférences sur le sujet "Modello lisrel"

1

Xu, Ling. « The Influence of Revenue Structure on Bank Performance of Listed Banks in China : An Empirical Study on 16 Listed Commercial Banks ». Dans 2019 International Conference on Economic Management and Model Engineering (ICEMME). IEEE, 2019. http://dx.doi.org/10.1109/icemme49371.2019.00021.

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Wu, Jiaxi. « Application of GARCH-CoVaR in Systematic Risk Measurement of Listed Insurance Companies in China ». Dans 2019 International Conference on Economic Management and Model Engineering (ICEMME). IEEE, 2019. http://dx.doi.org/10.1109/icemme49371.2019.00105.

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Mengqi, Zhao. « An Exploration to the Measurement and Influencing Factors of lnformation Disclosure Quality of Listed Companies ». Dans 2020 2nd International Conference on Economic Management and Model Engineering (ICEMME). IEEE, 2020. http://dx.doi.org/10.1109/icemme51517.2020.00047.

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Zelai, Liu, et Huang Hui. « Tunneling of Large Shareholders, Goodwill and Information Transparency, based on empirical models : Evidence from Listed Companies in China ». Dans 2020 2nd International Conference on Economic Management and Model Engineering (ICEMME). IEEE, 2020. http://dx.doi.org/10.1109/icemme51517.2020.00010.

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Tai, Yunshuai, et Qilun Li. « An Empirical Study on Economic Model of the Influence of Debt Financing Structure on the Financial Performance of Listed Companies ». Dans 2020 2nd International Conference on Economic Management and Model Engineering (ICEMME). IEEE, 2020. http://dx.doi.org/10.1109/icemme51517.2020.00127.

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Dong, Hao, Ki-Hyung Bae, Mengze Zhang et Na Li. « Empirical Research on the Factors Influencing Commercial Banks' Profitability : —Based on Panel Data of 16 Listed Banks from 2008 to 2017 ». Dans 2020 2nd International Conference on Economic Management and Model Engineering (ICEMME). IEEE, 2020. http://dx.doi.org/10.1109/icemme51517.2020.00182.

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Kewei, Xiong, et Liang Yuanyuan. « A-share Stock Reactions to the Approval of COVID-19 Vaccine Clinical Trial : An Event Study Model of Listed Pharmaceutical Firms’ Returns ». Dans 2020 2nd International Conference on Economic Management and Model Engineering (ICEMME). IEEE, 2020. http://dx.doi.org/10.1109/icemme51517.2020.00086.

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Zhou, Rong, et Lin Chen. « Research on Government subsidy and Enterprise Innovation based on Innovation output Model Analysis : evidence from listed companies in Minority areas of China ». Dans 2020 2nd International Conference on Economic Management and Model Engineering (ICEMME). IEEE, 2020. http://dx.doi.org/10.1109/icemme51517.2020.00063.

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Zhang, Xuefei. « Research on the Impact of the Actual Controller’s Obtaining Right of Abode on Audit Quality of Small and Medium Listed Companies through Regression Model ». Dans 2020 2nd International Conference on Economic Management and Model Engineering (ICEMME). IEEE, 2020. http://dx.doi.org/10.1109/icemme51517.2020.00094.

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CARLA BONATO MARCOLIN, MARCOLIN, BEHR ARIEL BEHR et SCHIAVI GIOVANA SORDI SCHIAVI. « O USO DA AN�LISE LATENTE SEM�NTICA PARA CONCEITUA��O E QUALIFICA��O DOS MODELOS DE NEG�CIOS DISRUPTIVOS ». Dans 15th CONTECSI International Conference on Information Systems and Technology Management. TECSI, 2018. http://dx.doi.org/10.5748/9788599693148-15contecsi/ps-5710.

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Rapports d'organisations sur le sujet "Modello lisrel"

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Ayallo, Irene. Thesis Review : Evaluating the Impact of Social Change Catalyst on Urban Community Development : A Case Study of LIN Centre for Community Development in Ho Chi Minh City, Vietnam by Chau Doan-Bao. Unitec ePress, juin 2018. http://dx.doi.org/10.34074/thes.revw22018.

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In this thesis, the author evaluates the impact of the Listen – Inspire – Nurture (LIN) Center’s model of participatory urban community development in Ho Chi Minh City (HCMC). It evidences how LIN has supported urban not-for-profit organisations (NPOs) to alter their self-perception from ‘charity organisations’ to being part of community development processes. Using a participatory communication approach, LIN has encouraged dialogue with and among stakeholders and provided robust information to the community. Consequently, NPOs have become more confident in their own capacities and have more stable financial support. In addition, the corporate sector has a better understanding of the not-for-profit sector and is making a stronger contribution to the development of NPOs in HCMC. These outcomes contribute to effective and sustainable community development in HCMC.
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Ayallo, Irene. Thesis Review : Evaluating the Impact of Social Change Catalyst on Urban Community Development : A Case Study of LIN Centre for Community Development in Ho Chi Minh City, Vietnam by Chau Doan-Bao. Unitec ePress, juin 2018. http://dx.doi.org/10.34074/thes.revw4300.

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In this thesis, the author evaluates the impact of the Listen – Inspire – Nurture (LIN) Center’s model of participatory urban community development in Ho Chi Minh City (HCMC). It evidences how LIN has supported urban not-for-profit organisations (NPOs) to alter their self-perception from ‘charity organisations’ to being part of community development processes. Using a participatory communication approach, LIN has encouraged dialogue with and among stakeholders and provided robust information to the community. Consequently, NPOs have become more confident in their own capacities and have more stable financial support. In addition, the corporate sector has a better understanding of the not-for-profit sector and is making a stronger contribution to the development of NPOs in HCMC. These outcomes contribute to effective and sustainable community development in HCMC.
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Rene, Schubert. Computing the Meridional Overturning Circulation from NEMO Output. GEOMAR, novembre 2021. http://dx.doi.org/10.3289/sw_3_2021.

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With this script, the Meridional Overturning Circulation (MOC) can be computed from NEMO ocean-model output for the whole globe or the Atlantic (AMOC), Indic (IMOC) and Pacific (PMOC) subbasins. The MOC is computable in z- and sigma coordinates. Moreover, for nested configurations, it is possible to combine data from both host and nest grids. Finally, it is possible to take into account of that the ORCA model grid is curvilinear north of 20°N: it is possible to compute the northward velocity component from the velocity field in x- and y- directions and to sum up the meridional flux over latitudional bands instead of in x-direction. When both steps are applied, the resulting MOC shows however strong variability in meridional direction. It needs to be clarified, whether this is realistic or not. The software is provided in the form of the jupyter notebook "MOC.ipynb" which includes more informations on the possibilites of the computations and an extensive appendix section with comparisons to computations with cdftools, as well as with details on the computation of the MOC including nest data and taking the curvilinearity of the grid into account. Necessary python modules are listed at the beginning of the document.
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Broto, Carmen, Luis Fernández Lafuerza et Mariya Melnychuk. Do buffer requirements for European systemically important banks make them less systemic ? Madrid : Banco de España, décembre 2022. http://dx.doi.org/10.53479/24876.

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Buffers for systemically important institutions (SIIs) were designed to mitigate the risks posed by these large and complex banks. With a panel data model for a sample of listed European banks, we demonstrate that capital requirements for SIIs effectively reduce the perceived systemic risk of these institutions, which we proxy with the SRISK indicator in Brownlees and Engle (2017). We also study the impact of the adjustment mechanisms that banks use to comply with SII buffer requirements and their contribution to systemic risk. The results show that banks mainly respond to higher SII buffers by increasing their equity, as intended by the regulators. Once we control for the options SIIs employ to fulfil these requirements and SII characteristics (e.g. total asset size), we find a residual effect of having SII status. This result suggests that being an SII provides a positive signal to markets by further decreasing its contribution to systemic risk.
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Woods, Mel, Saskia Coulson, Raquel Ajates, Angelos Amditis, Andy Cobley, Dahlia Domian, Gerid Hager et al. Citizen Science Projects : How to make a difference. WeObserve, 2020. http://dx.doi.org/10.20933/100001193.

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Citizen Science Projects: How to make a difference, is a massive open online course (MOOC). It was developed by the H2020 WeObserve project and ran on the FutureLearn platform from 2019. The course was designed to assist learners from all backgrounds and geographical locations to discover how to build their own citizen science project to address global challenges and create positive change. It also helped learners with interpreting the information they collected and using their findings to educate others about important local and global concerns. The main learning objectives for the course were: * Discover what citizen science and citizen observatories are * Engage with the general process of a citizen science project, the tools used and where they can be accessed * Collect and analyse data on relevant issues such as environmental challenges and disaster management, and discuss the results of their findings * Explore projects happening around the world, what the aims of these projects are and how learners could get involved * Model the steps to create their own citizen science project * Evaluate the potential of citizen science in bringing about change This course also provided five open-source, downloadable tools which have been tested in previous citizen science projects and created for the use of a wider range of projects. These tools are listed below and available in the research repository: * Empathy timeline tool * Community-level indicators tool * Data postcards tool * Future newspaper tool * Co-evaluation tool
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Shaver, Greg, et Miles Droege. Develop and Deploy a Safe Truck Platoon Testing Protocol for the Purdue ARPA-E Project in Indiana. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317314.

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Hilly terrain poses challenges to truck platoons using fixed set speed cruise control. Driving the front truck efficiently on hilly terrain improves both trucks fuel economies and improves gap maintenance between the trucks. An experimentally-validated simulation model was used to show fuel savings for the platoon of 12.3% when the front truck uses long horizon predictive cruise control (LH-PCC), 8.7% when the front truck uses flexible set speed cruise control, and only 1.2% when the front truck uses fixed set speed cruise control. Purdue, Peloton, and Cummins have jointly configured two Peterbilt 579 trucks for relevant combinations of: (1) coordinated shifting, (2) constant or variable platoon gap controls, (3) flexible or constant speed setpoint cruise control of the front trucks, and (4) long-horizon predictive cruise control (LHPCC) of the front truck. Confirmation of this functionality during platooning was demonstrated at the Continental Test track in Uvalde, Texas. In Indiana, on-road experiments were limited to single truck operation with long-horizon predictive cruise control, flexible set speed cruise control, and constant setpoint cruise control. Data from all of the above was used to improve the fidelity of simulations used to arrive at the fuel savings and gap control findings for hilly terrain per what is summarized in the findings section. Additionally, in early summer 2020, Purdue submitted to, and received improvement from, INDOT for a safe truck platoon testing protocol (located in this report’s appendix), which could not be implemented in Indiana before the end of the project because of COVID-19. Presentations of the subject matter at COMVEC, MAASTO, Purdue Road School, and the Work Truck Show are listed in the appendix.
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Ahnert, Markus, Mandy Arndt, Matthias Barth, Stephan Beil, Hilmar Börnick, Mareike Braeckevelt, Joachim Fauler et al. MikroModell Entwicklung eines Stoffflussmodells und Leitfadens zur Emissionsminderung von Mikroschadstoffen im Hinblick auf die Wasserqualität. Gunda Röstel, Prof. Dr. Peter Krebs, septembre 2021. http://dx.doi.org/10.25368/2021.68.

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Das Forschungsvorhaben “Entwicklung eines Stoffflussmodells und Leitfadens zur Emis-sionsminderung von Mikroschadstoffen im Hinblick auf die Wasserqualität“ (MikroModell) wurde im Zeitraum von Oktober 2015 bis Juni 2020 von der Deutschen Bundesstiftung Umwelt, dem Sächsischen Staatsministerium für Umwelt und Landwirtschaft (heute Sächsisches Staatsministerium für Energie, Klimaschutz, Umwelt und Landwirtschaft) sowie der Gelsenwasser AG gefördert. An dem interdisziplinären Projektkonsortium waren ne-ben den Betreibern der Abwassersysteme und -anlagen in Dresden, Chemnitz und Plauen Wissenschaftler:innen aus den Bereichen der Siedlungswasserwirtschaft, Hydrobiologie, Ökotoxikologie, Wasserchemie, Umweltökonomie, Pharmakologie an der Technischen Universität Dresden sowie des Wirtschafts- und Regulierungsrechts an der Technischen Univer-sität Bergakademie Freiberg beteiligt. In MikroModell wurde anhand unterschiedlich dicht besiedelter sächsischer Regionen untersucht, welche Verbesserungen der Gewässerqualität durch technologische Maßnahmen im Abwassersystem, durch Reduktionsmaßnahmen an der Quelle und in der Anwendung, durch rechtliche Steuerungsmaßnahmen auf EU-, Bundes- und Landesebene sowie durch Aktivitäten im Rahmen einer regional fokussierten Öffentlichkeitsarbeit erzielt werden können, um so eine effiziente und nachhaltige Entwicklung zu befördern. Dazu wurden sowohl Substanzen der Liste prioritärer Stoffe als auch weitere Spurenstoffe an Hand verfügbarer Umweltqualitätsnormen (UQN) bewertet. Der Bericht ist in zwei Teilen organisiert. Teil A beinhaltet den Handlungsleitfaden und richtet sich an Entscheidungsträger und Betreiberorganisationen, beschreibt also die praxisrelevanten Folgerungen aus den Untersuchungen. In Teil B werden die wissenschaftlichen Grundlagen und die Untersuchungsmethoden detailliert erläutert sowie ausgewählte Ergebnisse diskutiert. In Teil A wird eine systematische Vorgehensweise zur Bewertung der Relevanz von ab-wasserbürtigen Mikroschadstoffen und zur Entscheidungsfindung bzgl. Optionen zur Reduktion der Gewässerbelastung mit Mikroschadstoffen vorgestellt (Kapitel A-2). Die Durchführungsempfehlung ist in einem Prozessschema zusammengefasst, das die Maß-nahmenfindung als gemeinsamen Weg von Aufgabenträgern und Behörden beschreibt. Grundlage für die Bewertung der aktuellen Situation bildet die Auswertung der Gewäs-sergütedaten des LfULG (2009 – 2018) und zweier 21-Tage Monitoringkampagnen an den Kläranlagen-Standorten Dresden, Chemnitz und Plauen. IX Die Auswirkungen von Maßnahmen im technologischen Bereich und an der Quelle werden mittels Stoffflussmodellierung aufgezeigt. In Teil A werden dazu Simulationsergebnisse für Dresden, Chemnitz und Plauen herangezogen, die zeigen, dass sich für unter-schiedliche Einzugsgebiete und Stoffe unterschiedliche Maßnahmen als effektiv erweisen (Kapitel A-3). Darüber hinaus erweist sich auch die Definition der Zielgrößen als maßge-bend für die Priorisierung von Maßnahmen. Es gilt den Diskurs dazu anzustoßen. Neben konkreten technologischen Handlungsoptionen und Bewirtschaftungsansätzen an der Quelle werden auch rechtliche Handlungsoptionen in die Betrachtung miteinbezogen (Kapitel A-4). Um die Verwendungen und den Eintrag von Mikroschadstoffen aus Pflan-zenschutzmitteln, Arzneimitteln sowie Industrie- und Haushaltschemikalien mittel- und langfristig zu vermindern, wurden konkrete Empfehlungen zur Anwendung bzw. zu Anpassungen in den Bereichen des Wasser-, Arzneimittel- (Human- & Tierarzneimittelrecht), Chemikalien-, Düngemittel-, Pflanzenschutz- und Biozidrechts herausgearbeitet. Schließlich werden flankierende Aktivitäten zur Information ausgewählter Multiplikatoren und zur Aufklärung der Öffentlichkeit als unerlässlich erkannt und beschrieben (Kapitel A-5). Neben Maßnahmen zur Sensibilisierung der Bürger wurden insbesondere Kommunikationsveranstaltungen mit Ärzten und Apothekern durchgeführt. Dabei wurde zielgerichtet ein Verständnis für den nachhaltigen Einsatz und die gesicherte Entsorgung von Arzneimitteln vermittelt und allgemein das Bewusstsein geschärft, dass verschriebene Wirksubstanzen als solche oder metabolisiert/transformiert im Abwasser und ggf. im Gewässer wiederzufinden sind. Die Zusammenarbeit mit der Ärzteschaft erscheint nicht nur als zentraler Baustein zukunftsgerichteten Handelns wichtig, sondern wird auch als erfolgsversprechend angesehen. Der in Teil A vorgestellte Handlungsleitfaden vermittelt letztlich keine absolute Priorisierung von Handlungsoptionen, da sich für unterschiedliche Zielsetzungen und unter-schiedliche Bedingungen eine veränderte Priorisierung ergibt. Es wird aber der Weg hin zur Identifikation der unter den gegebenen Bedingungen besten Handlungsoption bzw. einer erfolgsversprechenden Kombination von Handlungsoptionen aufgezeigt. Dieses systematische Vorgehen wurde zwar am Beispiel von drei Pilotgebieten durchgespielt und für Sachsen flächendeckend aufbereitet, ist aber letztlich übertragbar auf andere Gebiete Deutschlands oder Europas. In Teil B werden die wissenschaftlichen Grundlagen sowie ausgewählte Ergebnisse des Projektes erläutert – sofern sie nicht schon in Teil A, den Handlungsleitfaden, eingeflossen sind (siehe den rechtlichen Handlungsrahmen sowie die Empfehlungen für die Öffentlich-keitsarbeit). Teil B ist in drei Kapitel unterteilt: Monitoring und Untersuchungen vor Ort (Kapitel B-1), Reduktionsmaßnahmen im Umgang mit Mikroschadstoffen (Kapitel B-2), Er-stellung und Kalibrierung des Stoffflussmodells sowie die Entwicklungsszenarien zur exemplarischen Anwendung des Modells (Kapitel B-3). X Kapitel B-1 umfasst das methodische Vorgehen zur Auswahl der Substanzen mit erhöhter Priorität an allen drei Standorten sowie eine Bewertung der Entwicklungstrends der Verschreibungsmengen für verschiedene Arzneistoffgruppen. Die Ergebnisse der vier Moni-toringkampagnen, die mit kombinierten chemischen und ökotoxikologischen Analysen verbunden waren, werden zusammengefasst und ergänzende Untersuchungen zur Bewertung der Mischwasserentlastungen erläutert. Die in Kapitel B-2 beschriebenen Untersuchungen zu Reduktionsmaßnahmen im Umgang mit Mikroschadstoffen beinhalten neben einer Übersicht zu den Kosten einer 4. Reinigungs-stufe die Bewertung verschiedener Verfahren zur Elimination von Spurenstoffen (Pulverak-tivkohle, Ozonierung und Sandfiltration) auf Grundlage von Laborversuchen. Zudem werden die Einträge industrieller und gewerblicher Einleiter in die Kanalnetze der Modellre-gionen und schließlich die Möglichkeiten von Reduktions- und Vermeidungsmaßnahmen auf Grundlage einer Literaturrecherche sowie von Experteninterviews mit verschiedenen Akteuren und Multiplikatoren bewertet. In Kapitel B-3 werden die Methoden zur Verschneidung der verschiedensten verfügbaren Informationen zur Stoffflussmodellierung beschrieben. Die verfügbaren, auf 186 vierstellige Postleitzahlbereiche bezogenen Daten zur Medikamentenverschreibung werden mit den 429 Gemeinden verschnitten, die Bevölkerung wird den Kläranlagen zugeordnet, die Kläranlagenabläufe müssen an den Fließgewässern verortet werden und sämtliche vom Land verfügbaren Informationen von Abfluss- und Qualitätsmessstellen müssen derart prozessiert werden, dass sie mit den modellierten Kläranlagenablaufwerten sinnvoll kombiniert werden können. Schließlich erfolgt die Kalibrierung und Validierung sowie die Anwendung des Stoffflussmodells zur Untersuchung von Entwicklungsszenarien und Handlungsoptionen. Die methodischen Grundlagen sind damit für eine erweiterte Anwendung und eine Übertragung auf andere Gebiete gegeben.
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