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Dissertations / Theses on the topic 'IPW'
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Gorugantula, Srikanth V. L. "A GPS-IPW Based Methodology for Forecasting Heavy Rain Events." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/10145.
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The mountainous western Virginia is the source of the headwater streams for the New, the Roanoke, and the James rivers. The region is prone to flash flooding, typically the result of localized precipitation. Fortunately, within the region, there is an efficient system of instruments for real-time data gathering with IFLOWS (Integrated Flood Observing and Warning System) gages, WSR-88D Doppler radar, and high precision GPS (Global Positioning System) receiver. The focus of this research is to combine the measurements from these various sensors in an algorithmic framework to determine the flash flood magnitude. It has been found that the trend in the GPS signals serves as a precursor for rain events with a lead-time of 30 minutes to 2 hours. The methodology proposed herein takes advantage of this lead-time as the trigger to initiate alert related calculations. It is shown here that the sum of the rates of change of total cloud water, water vapor contents and logarithmic profiles of partial pressure of dry air and temperature in an atmospheric column is equal to the rain rate. The total water content is measurable as the profiles of integrated precipitable water (IPW) from the GPS, the vertically integrated liquid (VIL) from the radar (representing different phases of the atmospheric water) and the pressure and temperature profiles are available. An example problem is presented illustrating the involving the calculations.<br>Master of Science
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KATO, Ryo, and Dan HU. "Auditor Size as a Measure for Audit Quality : A Japanese Study." 名古屋大学大学院経済学研究科附属国際経済政策研究センター, 2014. http://hdl.handle.net/2237/20455.
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Gripencrantz, Sarah. "Evaluating the Use of Ridge Regression and Principal Components in Propensity Score Estimators under Multicollinearity." Thesis, Uppsala universitet, Statistiska institutionen, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-226924.
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Multicollinearity can be present in the propensity score model when estimating average treatment effects (ATEs). In this thesis, logistic ridge regression (LRR) and principal components logistic regression (PCLR) are evaluated as an alternative to ML estimation of the propensity score model. ATE estimators based on weighting (IPW), matching and stratification are assessed in a Monte Carlo simulation study to evaluate LRR and PCLR. Further, an empirical example of using LRR and PCLR on real data under multicollinearity is provided. Results from the simulation study reveal that under multicollinearity and in small samples, the use of LRR reduces bias in the matching estimator, compared to ML. In large samples PCLR yields lowest bias, and typically was found to have the lowest MSE in all estimators. PCLR matched ML in bias under IPW estimation and in some cases had lower bias. The stratification estimator was heavily biased compared to matching and IPW but both bias and MSE improved as PCLR was applied, and for some cases under LRR. The specification with PCLR in the empirical example was usually most sensitive as a strongly correlated covariate was included in the propensity score model.
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Afonso, Lutcy Menezes. "Correcting for attrition in panel data using inverse probability weighting : an application to the european bank system." Master's thesis, Instituto Superior de Economia e Gestão, 2015. http://hdl.handle.net/10400.5/8155.
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Mestrado em Econometria Aplicada e Previsão<br>Esta dissertação analiza técnicas de correção do efeito do enviesamento que pode ocorrer no caso dos dados utilizados apresentarem valores em falta. Tais técnicas serão aplicadas a um modelo económico para caracterização da margem líquida de juros (MLJ) bancária, utilizando dados provinientes 15 países que pertencem ao sistema bancário da União Europeia (UE15).
As variáveis que caracterizam os bancos são observados entre de 2004 e 2010. E são escolhidas seguindo Valverde et al. (2007). Adicionalmente aos regressores são acrescentadas algumas variáveis macroeconómicas. A seleção proviniente da falta de alguns valores para os regressores é tratada através da ponderação probabilistica inversa. Os ponderadores são aplicados a estimadores GMM para um modelo de dados de painel dinámico.<br>This thesis discusses techniques to correct for the potentially biasing effects of missing data. We apply the techniques on an economic model that explains the Net Interest margin (NIM) of banks, using data from 15 countries that are part of the European Union (EU15) banking system. The variables that describe banks cover the period 2004 and 2010. We use the variables that were also used in Carbó-Valverde and Fernndez (2007). In addition, also macroeconomic variables are used as regressors. The selection that occurs as a consequence of missing values in these regressor variables is dealt with by means of Inverse Probability Weighting (IPW) techniques. The weights are applied to a GMM estimator for a dynamic panel data model that would have been consistent in the absence of missing data.
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Adams, Pieter. "The Strategic Migration of Telephony into an Internet Protocol World : a South African Perspective." Diss., University of Pretoria, 2005. http://hdl.handle.net/2263/24129.
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Internet Protocol Telephony (IPT), also known as Voice over Internet Protocol (VoIP), has evolved from a niche technology to one that is adopted fairly well in developed countries. The aim of this research report was to determine whether IPT will also be a success in the Republic of South Africa, which is one of many developing countries. The technology was analysed and it was found that cost reduction, increased productivity and enhanced applications were the most valuable benefits the technology could offer. Particular interesting impediments of the technology were discovered and it was found that there existed both hard issues like security and quality problems, as well as softer issues like internal politics, that could hinder the global success of the technology. The adoption rate of South Africa was compared to that of industrial countries and it was found that South African organisations overall posed a wait-and-see attitude towards IPT. Various implementation models were discussed and it was found that a hybrid approach would be the most viable option for local organisations. The South African environment were analysed and it was discovered that the biggest obstacle for success in South Africa was the regulatory environment. But it was also found that the environment would soon change and that competitors, including Black Economic Empowerment companies, should use the opportunities available. Social factors like HIV/AIDS and theft as well as economic factors like the exchange rate could hamper the competitiveness of local companies using IPT. IPT technology can only be a success in South Africa if it is intensely supported by Government, implemented in the correct manner and adopted aggressively by the local market.<br>Dissertation (MBA)--University of Pretoria, 2006.<br>Graduate School of Management<br>unrestricted
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Calhoun, McKenzie L., L. Brian Cross, D. Byrd, and L. Calhoun. "International Masterclass as a Catalyst to Expand Interprofessional Learning (IPL) and Interprofessional Practice (IPP) in Ireland." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/etsu-works/6895.
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Mendes, Margarida Ramos de Deus. "IPA." Master's thesis, Universidade de Lisboa, Faculdade de Arquitetura, 2018. http://hdl.handle.net/10400.5/16405.
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Dissertação de Mestrado em Design, com a especialização em Produto apresentada na Faculdade de Arquitetura da Universidade de Lisboa para obtenção do grau de Mestre.<br>Cerca de 80% da informação que o ser humano recebe é através da visão. Para pessoas cegas e com perda de visão severa a mais simples atividade do dia-a-dia pode tornar-se num desafio.
A identificação de produtos é um problema comum para estas pessoas, principalmente produtos alimentares, sempre que a pessoa necessita de ir às compras, na despensa em casa ou em cada refeição do dia em que é necessário cozinhar.
Para ajudar a população portadora de deficiência visual, a enfrentar este problema, esta dissertação tem como objeto de estudo o desenvolvimento de um equipamento/dispositivo que resolva este obstáculo de maneira a dar-lhe mais autonomia.
Durante o desenvolvimento deste estudo foi importante salientar temas como o “Design Inclusivo”, o “Interação Produto/ Utilizador”, “Deficiência Visual” e a “Identificação de produtos”. Em termos metodológicos foi realizada, nesta dissertação, uma investigação de natureza mista assente em métodos intervencionistas e não-intervencionistas. Elaborou-se uma revisão da literatura, com o objetivo de reunir as bases teóricas das áreas de estudo; recorreu- se a uma análise de casos de estudo; fez-se um levantamento dos dispositivos existentes no mercado recorrendo a um estudo de casos; foram realizadas conversas informais, mas essenciais ao desenvolvimento do projeto e ainda se concretizou uma entrevista exploratória com um grupo de amostragem. Aplicando ainda uma metodologia não-intervencionista, foram feitos inquéritos por entrevista ao grupo de amostragem, colaborador e especialista, com o intuito de perceber que alterações seriam necessárias para a evolução do projeto. Simultaneamente, e numa vertente mais prática de investigação ativa, foram criados diversos modelos-teste do dispositivo, em que o último modelo, mais próximo daquilo que seria o dispositivo na realidade, foi utilizado para a realização de uma avaliação e simulação da utilização do mesmo, com o grupo de amostragem.
Deste modo, espera-se que este processo de investigação permita mostrar a importância de uma melhor maneira de identificar produtos alimentares que facilite a rotina diária das pessoas portadoras de de ciência visual, melhorando consequentemente a sua qualidade de vida.<br>ABSTRACT: About 80% of the information that the human being receives is through vision. For blind people and with severe vision loss, the simplest day-today activity can become a challenge.
Product identification is a common problem for these people, especially food products, whenever they need to go shopping, in the pantry at home or at each meal of the day when it is necessary to cook.
To help the population with visual imparment dealing with this problem, this dissertation has as object of study, the development of an equipment/device that can solve this problem in order to give more autonomy.
During the development of this study it was important to highlight themes such as “Inclusive Design”, “Product-User Interaction”, “Visual Impairment” and “Product Identification”.
In methodological terms it was made, in this dissertation, a mixed nature investigation with interventionist and non-interventionist methods.
A review of the literature was made, aiming to gather the theoretical bases of the study areas; It was made an analysis of study cases; a survey of the existing devices on the market was done using case studies; informal conversations were carried out, but they were essential to the development of the Project, it was also done an exploratory interview with a sampling group. Applying a non- interventionist methodology, were elaborated surveys by interview to the sampling group, a collaborator and a specialist, in order to understand what changes would be necessary for the evolution of the project. Simultaneously, and in a more practical eld of active investigation, several test models of the device were created, in which the last one, closer to what the device would actually be, was used to carry out an evaluation and simulation of its use, with the sampling group.
Therefore, is expected that this process of investigation shows the importance of a better way to identify food products that facilitates the daily routine of blind or visually impaired people, giving them the desired autonomy.<br>N/A
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Gouge, Dawn H., and Kirk A. Smith. "School IPM." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2004. http://hdl.handle.net/10150/216529.
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Ondová, Michaela. "IPO ČSOB." Master's thesis, Vysoká škola ekonomická v Praze, 2009. http://www.nusl.cz/ntk/nusl-76257.
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The thesis aims to apply the theoretical approach of IPOs and financial services firm valuation on the Czech subsidiary of KBC: ČSOB. The theoretical part reviews the process of IPO with typical features of IPOs, and the pricing of IPO is discussed with the focus on theory of banks valuation. The empirical part of the thesis provides a financial analysis of the ČSOB, business plan and the valuation of the bank as of 30 September 2010 with the price of the actual IPO. This part aims at practical application of the theory of IPO and valuation. Al in all, the aim of the thesis is to apply theoretical knowledge of the IPOs on the practical case of ČSOB. Various analyses such as of KBC, ČSOB, Czech banking market, development of IPOs in CEE are used in order to apply and determine the reasons for the IPO, its timing, price and potential structure of investors.
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Roth, Matthias Alexander. "Strukturelles Nähen: ein Verfahren zur Armierung von Krafteinleitungen für Sandwich-Strukturen aus Faser-Kunststoff-Verbund." Kaiserslautern IVW, 2005. http://www.ivw.uni-kl.de/downloads/ivw-schriftenreihe/61Roth.
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Kaiser, Michael. "Zur Anwendung von kohlenstofffaserverstärktem Kunststoff im Hochleitungs-Rahmenbau von Sportfahrrädern." Kaiserslautern Inst. für Verbundwerkstoffe, 2007. http://www.ivw.uni-kl.de/downloads/ivw-schrifennreihe/79kaiser.pdf.
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Noll, Tim Joachim. "Beitrag zur Entwicklung punktueller Lasteinleitungen und Verbesserung der Versagensanalyse für Faser-Kunststoff-Verbund-Strukturen unter zyklischer Belastung /." Kaiserslautern : Inst. für Verbundwerkstoffe, 2008. http://www.ivw.uni-kl.de/downloads/ivw-schriftenreihe/81noll.pdf.
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Caetano, Mayra Cristina Teixeira [UNESP]. "Substratos orgânicos para a produção de mudas de Tabebuia heptaphylla irrigadas com água potável e residuária." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/139448.
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Previous issue date: 2016-05-24<br>É importante estudar compostos orgânicos na produção de mudas de T. heptaphylla, principalmente com resíduos considerados problemáticos como compostos a base de lixo urbano e restos vegetais oriundos de podas de árvores, bem como o tipo de água de irrigação utilizada. Com o trabalho o objetivo é analisar os substratos formados pela associação de doses de composto de lixo urbano e composto de poda de árvore, em condição de irrigação com água residuária e potável, nas características biométricas e na composição química foliar das mudas de Tabebuia heptaphylla. O delineamento experimental adotado foi em blocos casualizados em um esquema fatorial 8x2, sendo oito combinações de substratos (S): T1 (100% substrato comercial); T2 (100% C.P.A.); T3 (5% C.L. + 95% C.P.A.); T4 (10% C.L. + 90% C.P.A.); T5 (20% C.L. + 80% C.P.A.); T6 (40% C.L. + 60% C.P.A.); T7 (60% C.L. + 40% C.P.A.); e T8 (100% C.L.), associadas a irrigações com dois tipos de água (residuária e potável). As variáveis avaliadas foram: altura da parte aérea, diâmetro do coleto, massa de matéria seca da parte aérea e análise química foliar para determinação da concentração de macronutrientes. Os tratamentos que proporcionaram o melhor desenvolvimento das mudas de Tabebuia heptaphylla, foram os tratamentos 4 (10% CL + 90% CPA), 5 (20% CL + 80% CPA) e 6 (40% CL + 60% CPA). Sendo assim, os resultados permitem concluir que as combinações entre o composto de árvore e de lixo proporcionam resultados satisfatórios no desenvolvimento das mudas e que a utilização da água residuária influencia positivamente no desenvolvimento destas.<br>It is important to study organic compounds in the production of T. heptaphylla seedlings, especially with problematic considered as waste compounds to urban waste -based and plant remains derived from tree pruning, as well as the type of irrigation water used. The aim of this work was to analyze the biometric characteristics and the chemical composition of T. heptaphylla seedlings developed on different substrates formed by the association between different doses of urban waste compounds (CL) and compost of prunings trees (CPA) in irrigation condition with wastewater and drinking water. The experimental design was a randomized block in a 8x2 factorial design, with eight different combinations of substrates (S): S1 (100%) commercial substrate); S2 (C.P.A. 100%); S3 (5% + 95% C.L. C.P.A.); S4 (10% + 90% C.L. C.P.A.); S5 (20% + 80% C.L. C.P.A.); S6 (40% + 60% C.L. C.P.A.); S7 (60% + 40% C.L. C.P.A.); and S8 (100% C.L.) and with irrigation with two types of water (wastewater and potable). We evaluated the shoot height, stem diameter and leaf analysis to determine the concentration of macronutrients. Treatments that provided the best development of Tabebuia heptaphylla were treatments 4 (10% CL + 90 % CPA ), 5 (20 % CL + 80 % CPA) and 6 ( 40 % CL + 60 % CPA ) . The results obtained allow to conclude that the combination of the compound of tree and garbage provide satisfactory results development of the seedlings and the use of wastewater positively influences the development of these.
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Opasinov, Aleksandar, and Sina Eftekhari. "Improving the Cyber defence of an organisation based on IP Geolocation and security appliances." Thesis, Högskolan Väst, Avdelningen för Matematik, Data- och Lantmäteriteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-16149.
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As advancement and usage of data communication has increased exponentially on a global scale, with a devastating exposure to attacks and varying security threats to home offices as well as to large enterprises, there is always a need for enhanced network protection. The IT department of the company OneDefence, located in western Sweden, was chosen for the thesis and based on the stated information from the organisation, aims were set on how to improve their network defence capabilities. The aim of this thesis is to list ten countries posing the most serious IT threats, and to limit the attack surface of OneDefence’s IT network as much as possible while still providing the necessary services to users abroad. After researching the countries, a prototype was set up to mimic OneDefence’s topology of interest and test attacks were conducted as detailed in the Methodology chapter. The results of the investigations showed the countries posing most serious cyber threats included China, Russia and North Korea among others which were statistically calculated based on the total number of recognised cyberwarfare attacks. The results obtained from the different DoS attacks in the prototype showed that an IPS should be at the heart of an organisation's network defence for combating these intrusions, as well as potentially other types. With the help of a prototype built based on the organisation's topology, several attacks were somewhat successfully mitigated with the equipment used on hand, with only a low percentage of packets allowed to pass through the security unit. Lastly, to explore further enhancements of defence capabilities of OneDefence, a comparison between different products and devices were performed. This resulted in products from the Fortinet brand such as FortiGate NGFW and UTM capabilities as they are offering several advantages compared to competitors.<br>Då stora framsteg och användning av datakommunikation har ökat exponentiellt på en global skala, med en förödande exponering av attacker och säkerhetshot mot hemanvändare såväl som stora företag, finns detalltid ett behov av förbättrad nätverksskydd. IT-avdelningen hos företaget OneDefence, valdes för att utföra examensprojektet och baserade sig på organisationens angivna information för att förbättra deras nätverksförsvar. Syftet med denna rapport är att sammanställa en lista på tio länder som utgör de allvarligaste IT-hoten i världen, samt begränsa attackytan för organisationens nätverk så mycket som möjligt medan man behåller alla nödvändiga tjänster till användare utomlands. Efter att ha undersökt länderna, anordnades en prototyp för att efterlikna delar av OneDefences topologi av intresse och testattacker utfördes enligt metodologikapitlet. Resultaten av utredningarna visade att från de länder som utfört de allra allvarliga cyberhoten inkluderade bland annat Kina, Ryssland och Nordkorea, som har beräknats statistiskt baserat på antalet igenkända cyberwarfare attacker. Resultaten från de olika DoS-attackerna visade att en IPS bör vara kärnan i en organisations nätverksförsvar för att kunna bekämpa dessa intrång, samt potentiellt andra typer. Med hjälp av den prototyp som byggdes baserad på organisationens topologi, blockerades flera attacker rätt framgångsrikt, med en låg procentandel av paketen som gick genom säkerhetsenheten. Slutligen utforskades ytterligare förbättringar av försvarsförmågan hos organisationen genom att jämföra olika produkter och enheter. Detta resulterade i produkter från Fortinet-varumärket såsom FortiGate NGFW med UTM förmåga, då de erbjuder flera fördelar jämfört med konkurrenter.
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Löffler, Daniel. "Eigenschaften und Reaktivität von IPR und non-IPR Fullerenfilmen." [S.l. : s.n.], 2008. http://digbib.ubka.uni-karlsruhe.de/volltexte/1000009893.
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Bruce, Jeremy Charles. "Enzymatic studies on IPN amidohydrolase and IPN synthase in vitro." Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306693.
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Alkadi, Lubna T. "IPS e.max CAD and IPS e.max Press : fracture mechanics characterization." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/48598.
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Objective: To determine fracture toughness (KIC) and fatigue crack propagation (FCP) parameters for IPS e.max CAD and IPS e.max Press.
Materials and methods: For KIC determinations, 20 (6x6x6x12mm) notchless triangular prism (NTP) specimens of IPS e.max CAD and IPS e.max Press were prepared. IPS e.max CAD blocks were cut, ground and then crystallized, while IPS e.max Press ingots were pressed into molds obtained from wax prisms. Each specimen was mounted into a holder and custom grips were used to attach the holder to a computerized universal testing machine (Instron model 4301). The assembly was loaded in tension at a crosshead speed of 0.1mm/min and KIC was calculated based on the recorded maximum load at fracture. Fractured surfaces were characterized using scanning electron microscopy (SEM). The results were statistically analyzed using Weibull statistics and t-test (⍺=0.05).
For FCP characterization, a pilot test was done with three Plexiglas NTP samples. A pre-crack was initiated in one of the specimen edges. Several lines were scribed on the side of the specimen to monitor crack propagation. The specimens were mounted in the holder and then attached to custom grips on a servo hydraulic fatigue-testing machine (Instron model 8511). A strain gauge was attached to these grips to monitor crack opening displacement. Each specimen was cyclically loaded in tension (Mode I) in a load range between 1 and 20 N and crack length was monitored and filmed using a high definition video recorder (SONY HDR-XR550V) attached to a microscope (Edmund Scientific Co, Barrington, NJ). Video recording was terminated once catastrophic fracture of the specimen occurred. Cyberlink Power Director and Image J software were used in data analysis.
Results: KIC values were significantly higher for IPS e.max Press than IPS e.max CAD. The pilot FCP tests on Plexiglas revealed limitations with regards to the applicability of NTP specimen KIC test to FCP studies due to the presence of a trapezoidal crack front in the specimens.
Conclusion: IPS e.max Press is superior to IPS e.max CAD in KIC. Further research should be conducted to evaluate the feasibility of using a trapezoidal crack front in FCP studies.<br>Dentistry, Faculty of<br>Graduate
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Tillmann, Martin. "Innovative Prozesskettenoptimierung (IPO)." Aachen Apprimus-Verl, 2009. http://bvbr.bib-bvb.de:8991/F?func=service&docl̲ibrary=BVB01&docn̲umber=017109421&linen̲umber=0001&funcc̲ode=DBR̲ECORDS&servicet̲ype=MEDIA.
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Tillmann, Martin. "Innovative Prozesskettenoptimierung (IPO)." Aachen Apprimus-Verl, 2008. http://d-nb.info/992672562/04.
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Kemp, E., M. Floyd, E. McCord-Duncan, Beth Ann Bailey, Ivy A. Click, and J. Gorniewicz. "IPV Detection Strategies." Digital Commons @ East Tennessee State University, 2007. https://dc.etsu.edu/etsu-works/6406.
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Floyd, M., E. Kemp, E. McCord-Duncan, Beth Ann Bailey, Ivy A. Click, and J. Gorniewicz. "IPV Detection Strategies." Digital Commons @ East Tennessee State University, 2007. https://dc.etsu.edu/etsu-works/6416.
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Ferreira, Bernardo Weinstein de Maia. "IWP strategy: TechFrame." Master's thesis, NSBE - UNL, 2009. http://hdl.handle.net/10362/9471.
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A Work Project, presented as part of the requirements for the Award of a Masters Degree in Management from the NOVA – School of Business and Economics<br>TechFrame is an IT Portuguese company that provides a software package to Industrial
Property Agents to manage their clients’ portfolio. In Portugal this firm is a market leader,
having a share of 80%, and facing no competition, although some substitutes do exist. With this
scenario in the Portuguese market, TechFrame has low expectations of increasing business
volume, due to the specificity of this industry.
In order to increase sales volume and focusing on their core competences, TechFrame´s best
solution is to expand into new markets. Currently this firm is considering some
internationalization processes into the French, Italian and UK markets. This IWP will analyze the
internationalization into France. To do so, an analysis and explanation of the attractiveness of
this new market is included further along in this paper. It will be seen that despite the fierce
competition that TechFrame will face in France, it will still be an attractive market to enter due
to its’ large size and growing Industrial Property culture among organizations.
Based on that analysis it will be concluded that the best way to enter the French market is
through the creation of an office, and some recommendations will also be made such as
conquering first the SMEs then the larger firms and also the development of the Design
Module.
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Neupane, Suman. "Transparency in IPO mechanism : information production, IPO pricing and investors' participation." Thesis, Cranfield University, 2011. http://dspace.lib.cranfield.ac.uk/handle/1826/7170.
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In this doctoral thesis we bring together some empirical analysis on investors’ participation
in initial public offering (IPOs) from a market whose characteristics are unique and
significantly different from US and other important IPO markets. There are two important
features which distinguishes the Indian IPO market. First, the Indian IPO market is
characterised by a high level of transparency. Information on the participation of different
investor categories is publicly available during the offer period on a real time basis. Second,
Indian IPO firms are also required to reserve and allocate pre-determined fraction of total
shares on offer to different investor categories participating in the IPO.
Our first empirical study shows that the transparency in the mechanism creates highly
inelastic demand curves for a large number of IPOs. Analysis of demand over-time shows
that while institutional investors take the lead in subscribing to strong IPOs, noninstitutional
investors do so in weak IPOs, but perhaps not always with an honest intent.
Our analysis of IPO pricing shows that favourable demand by uninformed investors is
positively associated with a high IPO price. Further, while reputed underwriters appear to
exercise far more caution and restraint in setting prices, we find that in a large number of
IPOs, less reputed underwriters ignore information produced during the offer period and set
the price at the upper bound of the price range. Our findings suggest that the transparency
in allocation mechanism appears to be a double edged sword for the uninformed (retail)
investors. We recommend a change in the current regulation to protect investor’s welfare.
We also examine the influence of the participation of different investor categories on initial
returns. Unsurprisingly, we find that while the participation of both the informed investor
categories significantly influences initial returns, the participation of retail investor losses
its significance in explaining initial returns for bookbuilding and auction IPOs. We also
analyse the participation of informed institutional investors to examine whether the
presence of new bank loans at the time of the IPO reduces information asymmetry. Our
results show that presence of bank loans do not appear to reduce information asymmetry as
institutional investors participate significantly less in IPOs with new bank loans. While this
result is contrary to prior studies on bank loan announcements, it is consistent with a recent
study which shows that prior studies on bank loan announcements are plagued by sample
selection issues.
In our final empirical analysis we examine the participation of employees in IPOs and
analyse whether such participation can predict superior financial and operating performance
of the firm. We find that IPOs with high employee participation offer significantly higher
initial returns than IPOs with low employee participation. We also find that firms with high
employee participation in their IPOs exhibit superior post IPO operating performance.
Further, we find that the prior participation of other investor categories, in particular the
institutional investors, does not appear to influence the participation of employees in IPOs.
Our results suggest that employees have valuable private information about the quality of
the firm. The evidence presented in the study suggests that in the context of Indian IPOs,
where data on investors’ participation is available on a real time basis, uninformed
investors may use information on employee participation to select well performing IPOs.
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Larsen, Henrik Fred. "Assessment of chemical emissions in life cycle impact assessment : focus on low substances data availability and ecotoxicity effect indicators /." Department of Manufacturing, Engineering and Management, Technical University of Denmark, 2004. http://tempo.ipl.dtu.dk/ipl/upload/publ/PhD-thesis-rev.pdf.
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BERGGREN, DENNIS. "IPO Underpricing and techvaluation An empirical study of the Swedish IPO market." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-223891.
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Vogt, Patrick. "Erfolgsfaktoren des IPO-Managements /." Hamburg : Kovač, 2005. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=013177014&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Vogt, Patrick. "Erfolgsfaktoren des IPO-Managements." Hamburg Kovač, 2004. http://www.verlagdrkovac.de/3-8300-1844-4.htm.
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Dumrongwong, Konpanas. "Analysis of IPO advertising." Thesis, University of Exeter, 2013. http://hdl.handle.net/10871/15277.
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This research investigated the market conditions caused by IPO advertising by examining the impact of IPO advertising, based on the US stock market from 1986 to 2009. The relationship between advertising intensity in the IPO year and the degree of IPO underpricing was examined. It was found that IPO advertising is an inappropriate way to convey a firm's true value of IPO to market participants. An increase in advertising intensity around an IPO event increases the degree of initial returns. Simultaneously, however, advertising intensity around an IPO event also increases the post-IPO initial-return uncertainty, which raises the question as to whether advertising serves primarily as a mechanism to convey a firm's true value to investors. The theoretical valuation of IPO, the relation between IPO advertising and the degree of stock overvaluation and the relation between IPO advertising and long-run performance of IPO are discussed. Based on the Peasnell (1982)'s residual income valuation framework (henceforth RIV), IPO advertising was proved to cause stock price to be more overvalued in the secondary market: a positive relationship was found between advertising and the degree of stock overvaluation relative to its theoretical value. The stock price tends to revert back to its fundamental value in the long run a few years after IPO. The link between advertising intensity and long-run performance was investigated. The Fama French 3-factor model and Carhart 4-factor model were employed, with investment horizons of one, two, three and four years. While advertising is relevant to a firm’s value in the IPO year, the degree of advertising in the IPO year is unrelated to its value two and three years following the IPO event. The view that advertising serves primarily as a form of intangible asset that enhances future earnings (i.e., a 4 firm's value) is unable to account for the degree of underpricing. Accordingly, an alternative hypothesis, that advertising inflates the short-run stock price, was proposed. The results of this study are consistent with the view of Purnanandam and Swaminathan (2004), namely that the stock price of newly listed firms can be overvalued.
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Šenkyřík, Ivo. "Analýza IPO v ČR." Master's thesis, Vysoká škola ekonomická v Praze, 2009. http://www.nusl.cz/ntk/nusl-5223.
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The thesis "IPO analysis in Czech Republic" focuses on initial public offering (IPO) issue applied on the Czech capital market. The beginning of the thesis focuses on IPO characteristics and company's alternative financing. The work describes IPO process in detail in case of an issue on the Prague Stock Exchange and the long-term performance characteristics of the new issues further. The ending focuses on the current Czech capital market, the Prague Stock Exchange and the investors.
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Harris, Jessica M. "IPF : causes and consequences." Thesis, Imperial College London, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.501143.
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Kronqvist, Jessica, and Ingrid Markström. "IPS - en väg mot arbete : Vad som påverkar arbetsrehabiliteringen utifrån IPS-coachers perspektiv." Thesis, Umeå universitet, Arbetsterapi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-44384.
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ABSTRAKT Personer med psykiskt funktionshinder ärden persongrupp som statistiskt sett har minst chans att komma ut i arbete. Enarbetsrehabiliteringsmetod som enligt internationell forskning visat sig varaden mest effektiva för dessa personer är Individual Placement and Support(IPS), men kunskap om hur metoden fungerar i Sverige är ännu bristfällig.Syftet var att belysa IPS-coachers uppfattning om vad som påverkat arbetsrehabiliteringenför klienter med psykiskt funktionshinder inom två IPS-program i norraSverige. Metoden som användes var attanalysera åtta IPS-coachers dokumentation kring 65 klientersarbetsrehabilitering under totalt två år med hjälp av kvalitativinnehållsanalys. Ett övergripande tema kunde skapas ”Motivation och förmåga att se värdet av IPS möjliggör en fungerandearbetsrehabilitering”, som bestod av de fyra huvudkategorierna: ”Klientcentrerat arbetssätt för att skapa ochupprätthålla klientens motivation, ”Klientens hälsa, livssituation ochstrategier för konstruktiv anpassning”, ”Betingelser för lämplig arbetsplats” och ”Spelregler i samarbetet”. Upprätthållandetav motivation visade sig vara mycket komplext då det påverkas av så mångaaspekter och för personer med psykiskt funktionshinder kan det vara extrasvårt. En slutsats är att metoden IPS och arbetsterapi delar flera centralavärderingar. Framför allt att meningsfull aktivitet påverkar människans hälsaoch bidrar till utveckling, men också att ett klientcentrerat arbetssättmöjliggör skapandet av flexibla strategier som fungerar för den enskildeklienten i det sammanhang där han eller hon ska utföra sina aktiviteter.
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Hoque, Hafiz. "Information content of insider trades, IPO lockup expiration and long-run IPO performance." Thesis, City University London, 2010. http://openaccess.city.ac.uk/12096/.
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A number of previous studies have assessed whether insider trades convey information to the market. Whilst lots of research has been undertaken in the past three decades, the issue is still contentious and there is ongoing debate concerning the legality and profitability of insider trading. Regulators restrict insider trading before any material news announcements, so that insider cannot take advantage of private information. Motivated by the studies in individual and aggregate insider trading, the objective of this thesis is to understand the role of signals that insiders send to the financial market about their companies when they trade, in general and to assess the role of insider trading in the context of initial public offerings (IPOs), particularly under lockup restrictions and the high information asymmetries inherent in IPOs.
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Berggren, Dennis. "IPO Underpricing and tech valuation : An empirical study of the Swedish IPO market." Thesis, KTH, Nationalekonomi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209453.
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The closing price first day of trading has historically been found to exceed the offer price set in IPOs, implying that many issuing firms tend to leave money on the table in their IPO. This thesis examines the level of IPO underpricing in Sweden using unique data of IPO transactions on the largest Swedish stock exchanges during 2010-2016. It further discusses the valuation difficulties using the most common valuation methods for firms exhibiting characteristics commonly shared by technological firms. Univariate and multivariate tests confirm the existence of underpricing on Swedish stock exchanges during the period of study. Firms in the technological sector are found to experience both high average levels of underpricing and great variance in initial returns, suggesting potential difficulties valuing technological firms. Robust univariate tests do however not yield a significant result of greater variance in initial returns compared to rest of the sample. By using regression analysis, I find capital raised relative to market capitalization to have significant negative effect on initial returns.
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Myers, Rachel Kathryn. "Childhood Witnessing of Intimate Partner Violence (IPV) And Early Adulthood IPV Among Urban Women." Diss., Temple University Libraries, 2016. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/377989.
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Public Health<br>Ph.D.<br>Annually, more than 15 million U.S. children witness intimate partner violence (IPV) in their homes between caregivers. Witnessing IPV during childhood has been associated with increased risk of adulthood IPV victimization, although this relationship has most commonly been examined among older populations of white adults (McKinney, Caetano, Ramisetty-Mikler, & Nelson, 2009; Straus, 1989; Whitfield, Anda, Dube, & Felitti, 2003), not minority women who experience a disproportionately high burden of IPV victimization (Breiding, Chen, & Black, 2014). It also is unclear whether there are specific characteristics of childhood witnessing of IPV that may aid in understanding the increased probability of IPV victimization observed among young, minority women. This study examined associations between four characteristics of childhood witnessing of IPV (direction of violence witnessed, academic disruption, fearfulness, and frequency) and adulthood physical and sexual IPV victimization. Further, psychosocial moderators of these associations were examined. Existing data collected from 315 women residing in North Philadelphia were analyzed. Overall, 28% of women witnessed IPV during childhood and nearly one in four women reported IPV victimization. Among these women there was diversity with regards to the characteristics of witnessing reported. Unadjusted associations observed that women who witnessed bidirectional IPV, experienced academic disruption, or reported fearful witnessing were significantly more likely to experience adulthood IPV victimization than women who did not witness IPV during childhood. After adjusting for covariates, these witnessing characteristics were no longer significantly associated with adulthood IPV victimization; however, the risk of adulthood IPV victimization was consistently related to current depressive symptoms and substance use. Modest support for effect modification by low self-esteem was observed. A significant difference in the predicted probability of adulthood IPV victimization was observed among women reporting bidirectional childhood witnessing of IPV and high self-esteem in adulthood compared to women reporting bidirectional witnessing and low self-esteem (difference=0.51, 95% CI: 0.06, 0.95, p=0.027). Childhood abuse was associated with greater probability of adulthood IPV victimization regardless of the frequency of childhood witnessing of IPV (aOR=5.8, 95% CI: 2.2, 13.6). Given the high prevalence of childhood witnessing of IPV observed in this study, these findings highlight the importance of screening for childhood IPV witnessing. In addition, these results suggest particular groups of urban women who may be at highest risk for adulthood IPV victimization, including those experiencing depressive symptoms, substance use, and a history of childhood abuse. Identifying adolescents and young adults with these characteristics and providing early prevention services may reduce the probability of future IPV victimization among young, sexually active urban women. Additionally, examining the role of low self-esteem during child- and adulthood may inform efforts to prevent IPV victimization. These findings highlight the need for prospective, longitudinal studies of urban children and adolescents to examine the complex causal pathways between childhood witnessing of IPV, psychosocial characteristics, and adulthood IPV victimization.<br>Temple University--Theses
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Vieira, Lucas Donizetti. "Genômica populacional de Handroanthus serratifolius e Tabebuia aurea." Universidade Federal de Goiás, 2018. http://repositorio.bc.ufg.br/tede/handle/tede/8320.
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Previous issue date: 2018-03-09<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>Population genomics studies in Neotropical species are scarce, however, they are of great
importance for the understanding of the neutral and adaptive variations, in order to develop
strategies of management and conservation for the species. In this context our objective was
to verify the role of natural selection in the distribution of populations diversity in
Handroanthus serratifolius and Tabebuia aurea. Here, we study population genomics based in
sequence capture using 24,751 pre-developed probes. For H serratifolius were sampled c.
64,000 SNPs in 144 individuals from 16 populations. For T aurea were sampled c. 18,000 SNPs
in 48 individuals from 6 populations. Genetic differentiation was high (FST = 0.194, p <0.001)
in H. serratifolius and intermediate (FST = 0.144, p <0.001) in T. aurea. The inbreeding
coefficient was low in both species, however, in three populations of H. serratifolius it was
intermediate or high. The genetic structure of populations presented two genetic groups for
the populations sampled in the two species. H. serratifolius with high genetic differentiation
and T. aurea with admixture in all populations. We did not find SNPs outliers in the distribution
of FST values, due to the wide distribution of values found for the populations of the two
species. In the search for correlation between environmental variables and changes in allelic
frequency H. serratifolius presented only three SNPs, inside six genes and T. aurea presented
16 SNPs, inside 25 genes. The functional annotation of these genes showed relationship with
molecular processes, transposable elements and one in T. aurea related to resistance to
diseases. In conclusion, our data show a selection signal in H. serratifolius for only three loci
with local adaptation signal. In T. aurea our data show a greater number of locos (16 locos)
with local adaptation signal.<br>Estudos de genômica de populações em espécies Neotropicais são escassos, no entanto,
apresentam grande importância para o entendimento das variações neutras e adaptativas, a
fim de desenvolver estratégias de manejo e conservação das espécies. Nesse contexto nosso
objetivo foi verificar o papel da seleção natural na distribuição da diversidade de populações
de Handroanthus serratifolius e Tabebuia aurea. Aqui, nós estudamos a genômica de
populações baseado em sequence capture utilizando 24.751 sondas previamente
desenvolvidas. Para H serratifolius foram amostrados c. 64.000 SNPs em 144 indivíduos de
16 populações. Para T aurea foram amostrados c. 18.000 SNPs em 48 indivíduos de 6
populações. A diferenciação genética foi alta (FST = 0,194, p < 0,001) em H. serratifolius e
intermediária (FST = 0,144, p < 0,001) em T. aurea. O coeficiente de endogamia foi baixo nas
duas espécies, no entanto, em três populações de H. serratifolius foi intermediária ou alta. A
estrutura genética das populações apresentou dois grupos genéticos para as populações
amostradas nas duas espécies. H. serratifolius com alta diferenciação genética e T. aurea com
mistura em todas as populações. Nós não encontramos SNPs outliers na distribuição de valores
de FST, devido a ampla distribuição de valores encontrada para as populações das duas
espécies. Na busca por correlação entre variáveis ambientais e mudanças na frequência alélica
H. serratifolius apresentou apenas três SNPs, presentes em seis genes e T. aurea apresentou
16 SNPs, presentes em 25 genes. A anotação funcional desses genes mostrou relação com
processos moleculares, elementos transponíveis e um em T. aurea ligado a resistência a
doenças. Concluindo, nossos dados apresentam sinal de seleção em H. serratifolius para
apenas três locos com sinal de adaptação local. Em T. aurea nossos dados mostram maior
número de locos (16 locos) com sinal de adaptação local.
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Astutik, Wynda. "IPR Modeling for Coning Wells." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for petroleumsteknologi og anvendt geofysikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19518.
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In this study, based on the work of Vogel, we generated the Inflow Performance Relationship (IPR) curves and its dimensionless form at any stage of depletion using black-oil simulator results. The IPR was generated for horizontal well with gas and water coning problems, producing from thin oil reservoir sandwiched between gas cap and aquifer. Two empirical IPR equations adopted from SPE paper by Whitson was also presented here. The first empirical relationship was developed based on simulated data for each reservoir pressure (stage of depletion) while the second relationship was developed based on all generated data.A fully implicit black-oil Cartesian model with total grid number of 1480 and 150 ft total thickness was used as reservoir model. The horizontal well extends through the full length of reservoir in y-direction with only one grid number along the horizontal section which makes the model a 2D problem. Sensor reservoir simulator and Pipe-It software were utilized to generate the IPR data.This work also includes a sensitivity study to understand the effect of several parameters to gas and water coning behavior, well placement optimization, coning collapse study, and the effect of coning to maximum well production rate. In coning collapse study, a relationship between flowing bottom-hole pressure and reservoir pressure when the cone collapse is provided in graphical form. This could be useful in field application where chocking the well to lower flowing bottom-hole pressure has become one alternative to reduce coning problems.
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DeGomez, Tom. "The Piñon Ips Bark Beetle." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2006. http://hdl.handle.net/10150/146724.
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5 pp.<br>Pine Bark Beetles, Cypress Bark Beetles<br>Hosts, description and life cycle of the pinon ips and signs of infection. Management practices include maintaining tree health, sanitation and chemical sprays. Thinning is the long term solution to stressed stands. Many ecological factors are significant when managing for pinon ips.
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DeGomez, Tom, and Bob Celaya. "The Piñon Ips Bark Beetle." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2013. http://hdl.handle.net/10150/272834.
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Ding, Z. "Functional analysis of IP3 receptors." Thesis, University of Cambridge, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.598546.
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I developed a high-throughput fluorescence polarisation (FP) binding assay using fluorescein-IP<sub>3</sub> and purified N-terminal fragments of IP<sub>3</sub>R to examine the thermodynamics of ligand binding to IP<sub>3</sub>R. I demonstrate that at 4°C, equilibrium competition binding using <sup>3</sup>H-IP<sub>3</sub> and the FP assay provided similar estimates of the equilibrium dissociation constants (K<sub>D</sub>) for a variety of ligands. I showed that the IBC alone is sufficient for high-affinity binding of adenophostin A (AdA). Similar amounts of binding energy are diverted into rearranging the SD for IP<sub>3</sub> and AdA, but they are distinguished by their binding enthalpy and entropy changes. I revealed that the enthalpy and entropy changes of the binding of 2-O-modified IP<sub>3</sub> analogues are different, despite their similar free energy changes. These results prompted me to propose a new model to explain partial agonism of IP<sub>3</sub>R. Different cell-surface receptors have been reported to evoke Ca<sup>2+</sup> release from different IP<sub>3</sub>-sensitive Ca<sup>2+</sup> stores. I examined this phenomenon in fura 2-loaded HEK cells. Combined maximal concentrations of ATP and carbachol (CCh) evoked a Ca<sup>2+</sup><sub> </sub>response that was larger than the response to either alone, but smaller than the sum of the responses. In the absence of extracellular Ca<sup>2+</sup>, ATP evoked a Ca<sup>2+</sup> release that was significantly larger than CCh in cells pretreated with CCh, but smaller than the ATP response in naïve cells. In the absence of extracellular Ca<sup>2+</sup>, CCh evoked a Ca<sup>2+</sup> release that was significantly larger than ATP in cells pretreated with ATP, but smaller than the CCh response in naïve cells. These results suggest the existence of discrete agonist-specific Ca<sup>2+</sup>-stores that partially overlap.
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Helgesson, Dan, and Emelie Nilsson. "Comparison and implementation of IPS." Thesis, Linköpings universitet, Fysik och elektroteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-110895.
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Innomhuspositioneringssystem kan med fördel användas i många olika tillämpningar, allt från sjukhus till shoppingcenter. Denna rapport behandlar olika tekniker och lösningar för att designa ett positioneringssystem. Rapporten tar även upp i detalj hur ett system kan konstrueras av ZigBee kombinerat med dödräkning.
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Candráková, Simona. "Adhezní vlastnosti semi-IPN hydrogelů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2020. http://www.nusl.cz/ntk/nusl-433088.
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This Diploma thesis deals with optimization of the hydrogel preparation with various additions of substances affecting adhesion, studying the adhesion of prepared hydrogel systems and modifying their adhesion properties. Prepared hydrogels were agarose, alginate and gellan polymer systems with additions of acrylic acid, acrylamide, calcium chloride and Tween 20. The experimental part of the diploma thesis focuses first on optimizing the preparation of individual hydrogels, from which, according to certain criteria, suitable representatives were selected to study adhesion and its controlled modification. Agarose and gellan hydrogels were selected as suitable representatives, which were then used in rheological measurements. Based on these measurements, the effect of the adhesive force and the adhesive work of individual materials was evaluated. It was found that the best adhesion properties of the materials used are unadjusted hydrogels, in the case of hydrogels with the addition of another substance, a negative effect on adhesion was observed, when the adhesion force was reduced and also the adhesion work was reduced.
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Flandrin, Flavien. "Rate based IPS for DDoS." Thesis, Edinburgh Napier University, 2010. http://researchrepository.napier.ac.uk/Output/4007.
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Nowadays every organisation is connected to the Internet and more and more of the world population have access to the Internet. The development of Internet permits to simplify the communication between the people. Now it is easy to have a conversation with people from everywhere in the world. This popularity of Internet brings also new threats like viruses, worm, Trojan, or denial of services. Because of this, companies start to develop new security systems, which help in the protection of networks. The most common security tools used by companies or even by personal users at home are firewalls, antivirus and now even Intrusion Detection System (IDS). Nevertheless, this is not enough so a new security system has been created as Intrusion Prevention Systems, which are getting more popular with the time .This could be defining as the blend between a firewall and an IDS. The IPS is using the detection capability of the IDS and the response capability of a firewall. Two main types of IPS exist, Network-based Intrusion Prevention System (NIPS) and Host-based Intrusion Prevention System (HIPS). The thirst should be set-up in front of critical resources as a web server while the second is set-up inside the host and so protect only this host. Different methodologies are used to evaluate IPSs but all of them have been produced by constructors or by organisms specialised in the evaluation of security devices. This means that no standard methodology in the evaluation of IPS exists. The utilisation of such methodology permits to benchmark system in an objective way and so it will be possible to compare the results with other systems. This thesis reviews different evaluation methodologies for IPS. Because of the lack of documentation around them the analysis of IDS evaluation methodology will be also done. This will permit to help in the creation of an IPS evaluation methodology. The evaluation of such security system is vast; this is why this thesis will only focus on a particular type of threat: Distributed Denial of Service (DDoS). The evaluation methodology will be around the capacity of an IPS to handle such threat. The produced methodology is capable of generating realistic background traffic along with attacking traffic, which are DDoS attacks. Four different DDoS attacks will be used to carry out the evaluation of a chosen IPS. The evaluation metrics are the packet lost that will be evaluated on two different ways because of the selected IPS. The other metrics are the time to respond to the attack, the available bandwidth, the latency, the reliability, the CPU load, and memory load. All experiment have been done in a real environment to ensure that the results are the more realistic possible. The selected IPS to carry out the evaluation of the methodology is the most popular and open-source Snort, which has been set-up in a Linux machine. The results shows that system is effective to handle a DDoS attack but when the rate of 6 000 pps of malicious traffic is reach Snort start to dropped malicious and legitimate packets without any differences. It also shows that the IPS could only handle traffic lower than 1Mbps. The conclusion shows that the produces methodology permits to evaluate the mitigation capability of an IPS. The limitations of the methodology are also explained. One of the key limitations is the impossibility to aggregate the background traffic with the attacking traffic. Furthermore, the thesis shows interesting future work that could be done as the automation of the evaluation procedure to simply the evaluation of IPSs.
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Šišmiš, Lukáš. "Optimalizace IDS/IPS systému Suricata." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2021. http://www.nusl.cz/ntk/nusl-445503.
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V dnešnom svete zrýchľujúcej sa sieťovej prevádzky je potrebné držať krok v jej monitorovaní . Dostatočný prehľad o dianí v sieti dokáže zabrániť rozličným útokom na ciele nachádzajúce sa v nej . S tým nám pomáhajú systémy IDS, ktoré upozorňujú na udalosti nájdené v analyzovanej prevádzke . Pre túto prácu bol vybraný systém Suricata . Cieľom práce je vyladiť nastavenia systému Suricata s rozhraním AF_PACKET pre optimálnu výkonnosť a následne navrhnúť a implementovať optimalizáciu Suricaty . Výsledky z meraní AF_PACKET majú slúžiť ako základ pre porovnanie s navrhnutým vylepšením . Navrhovaná optimalizácia implementuje nové rozhranie založené na projekte Data Plane Development Kit ( DPDK ). DPDK je schopné akcelerovať príjem paketov a preto sa predpokladá , že zvýši výkon Suricaty . Zhodnotenie výsledkov a porovnanie rozhraní AF_PACKET a DPDK je možné nájsť na konci diplomovej práce .
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Bohdan, Roman. "Innovation, Ownership and IPO Underpricing." ScholarWorks@UNO, 2018. https://scholarworks.uno.edu/td/2550.
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This dissertation consists of two empirical essays. The first chapter titled: “Hedge Fund Activism and Dual Ownership of U.S. Multinationals”. Harford, Wang & Zhang (2017) conclude that holding high cash balances abroad to avoid US taxes causes internal capital markets and investments distortions. We posit that hedge funds target MNCs with more severe internal capital and agency problems. We demonstrate that upon acquiring dual ownership in these firms, hedge funds reduce internal capital problems and improve investment, especially innovation, efficiencies. To further reduce agency costs of foreign cash holdings, hedge funds engage dual firms in focused acquisitions. These improvements are reflected in superior performances of dual firms relative to non-dual firms. Chapter 2 titled as “Innovation Strategies & IPO Underpricing”. In this chapter, we investigate how a firms’ choice of pre-IPO innovation strategies affect IPO pricing. We differentiate the orientation of the issuing firm’s innovation portfolio in terms of exploitative orientation versus explorative orientation based on citations of patents across technology classes. We introduce a measure of innovation power to generate breakthrough innovations. We show that the issuing firms with greater innovation power, especially firms with exploratory orientation of a patent, significantly decrease underpricing and have the power to bargain a higher offer price. Our results suggest that a higher exploration strategy requires more time to negotiate a higher offer price while more valuable innovation requires less time to bargain at the higher offer price.
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Kukla, Michal. "Ray-tracing s knihovnou IPP." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2010. http://www.nusl.cz/ntk/nusl-237265.
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Master thesis is dealing with design and implementation of ray-tracing and path-tracing using IPP library. Theoretical part discusses current trends in acceleration of selected algorithms and also possibilities of parallelization. Design of ray-tracing and path-tracing algorithm and form of parallelization are described in proposal. This part also discusses implementation of adaptive sampling and importance sampling with Monte Carlo method to accelerate path-tracing algorithm. Next part is dealing with particular steps in implementation of selected rendering methods regarding IPP library. Implementation of network interface using Boost library is also discussed. At the end, implemented methods are subjected to performance and quality test. Final product of this thesis is server aplication capable of handling multiple connections which provides visualisation and client application which implements ray-tracing and path-tracing.
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Oliveira, Adaíl Domingues da Silva de. "Arquitetura de segurança do IPL." Master's thesis, Instituto Politécnico de Leiria, 2011. http://hdl.handle.net/10400.8/1319.
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Dissertação apresentado à Escola Superior de Tecnologia e Gestão do IPL para obtenção do grau de Mestre em Engenharia Informática - Computação Móvel, orientada pelo Professor Doutor Carlos Manuel da Silva Rabadão.<br>O massivo desenvolvimento tecnológico contemporâneo destituiu concepções tradicionais, valores e formas de vida, originando um novo paradigma caracterizado pela globalização da atividade humana suportada por uma sociedade em rede.
O homem através da enorme capacidade de adaptação, que é observável ao longo da história encara estas alterações de forma passiva, rendendo-se perante os benefícios da evolução tecnológica, tornando-se rapidamente dependente desta nova forma de vida. O que inicialmente poderá ser considerado como excentricidade, rapidamente deixa de o ser e introduz-se no quotidiano com naturalidade.
Esta sociedade contemporânea caracterizada de civilização tecnológica onde o homem persegue os avanços tecnológicos sempre com maior ousadia, encontra-se suportada fundamentalmente na Internet.
Nas últimas décadas, mercê do crescimento exponencial da Internet e da massificação do seu uso, surgiram diversas ameaças de segurança. Tais ameaças devem-se, na maioria dos casos, à ausência de mecanismos de segurança adequados, deficiência de políticas de segurança, massificação do uso de terminais móveis, mobilidade e ingenuidade dos utilizadores.
O uso de terminais móveis fez com que os sistemas deixassem de estar confinados aos limites físicos dos edifícios sendo responsável pela mudança do perímetro de segurança das organizações. O perímetro de segurança deixou de ser algo bem definido e identificado e passou a ser constituído por todos os tipos de dispositivos que pertençam à rede da organização.
Com o surgir das aplicações viradas para a Internet surgiu também uma nova geração de ameaças de segurança. Estas aplicações, denominadas de aplicações Web 2.0, possuem a particularidade de facilmente contornarem os mecanismos e políticas de segurança existentes. Atualmente, a maioria das aplicações deste tipo já estão ―infiltradas‖ dentro das organizações, sendo responsáveis pela perda de produtividade, consumo excessivo de largura de banda e risco de perda de dados.
Perante este cenário, é importante que na definição e desenho de arquiteturas de segurança duma organização sejam tidos em conta todos os desafios de segurança e ameaças que atualmente as organizações se encontram expostas, sejam diretamente ou indiretamente. Neste trabalho será proposta uma nova arquitetura e mecanismos de segurança que permitam acompanhar as necessidades resultantes da centralização ocorrida em 2007 do Instituto Politécnico de Leiria, tendo sempre como missão a salvaguarda do negócio do IPL e a sua proteção das ameaças atuais.
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Punsomreung, Treechada. "Intimate Partner Violence ( IPV ), Factors Influencing IPV, and Adverse Maternal Health among Pregnant Thai Women." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1337352289.
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Kallén, Gustav, and Henry Björkqvist. "Underpricing and underperformance of Swedish IPO’s : A comparative study of different sectors from 2007-2017." Thesis, Högskolan i Jönköping, Internationella Handelshögskolan, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-39760.
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Background: The post-IPO anomalous behaviour in the short and long-run are among the well-recognised anomalies in corporate finance, and exist on all equity markets. The researchers are not unanimous what causes these phenomena’s, and previous research has primarily focused on the US and European markets. Purpose: The study aims to investigate the market performance of Swedish IPO's in the short- and long-run in-between 2007-2017 for different sectors. Method: The market adjusted initial return method was used to calculate the short-run initial return. The Even-time approach with the Buy-and-hold methodology was used to calculate the long-run abnormal returns. A regression analysis was adopted to investigate the relationship between some existing theories for explaining underpricing. Conclusion: Overall the sample set for the study were on average underpriced with 9,25 %, furthermore, no evidence was found that Swedish IPO’s underperformed in a three-year period compared to the market. Of the theories tested, the signalling hypothesis was significant and can be one determinant for underpricing of Swedish IPO’s.
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Gouge, Dawn H., Tim Stock, Shaku Nair, et al. "Preparing Your School Integrated Pest Management (IPM) Plan." College of Agriculture, University of Arizona (Tucson, AZ), 2015. http://hdl.handle.net/10150/558489.
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12 pp.<br>This document is intended to help you develop an implementable IPM Plan for your school or school district. We have provided a modifiable template which can be downloaded at: http://cals.arizona.edu/apmc/westernschoolIPM.html#pubs.
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Paim, Aline Ferreira. "MICROPROPAGAÇÃO E ANALISE DA ANATOMIA FOLIAR DE Handroanthus chrysotrichus (Mart. ex DC.) J. Mattos." Universidade Federal de Santa Maria, 2014. http://repositorio.ufsm.br/handle/1/3777.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Handroanthus chrysotrichus is a Brazilian native forest species which presents several important aspects both under the economic and ecological points of view, because its ability to provide timber products as well as for being indicated for degraded and permanent preservation areas recovery. Its seeds present problems concerning loss of viability when subjected to storage. This way, micropropagation emerges as an alternative for the species propagation. However, some characteristics inherent in in vitro grown plants may promote physiological and anatomic changes in tissues under that condition. Thus, the aim of this study was to evaluate aspects related to micropropagation and leaf anatomy of H. chrysotrichus. Firstly, health and germination tests were applied to seeds from different lots of that species. As for in vitro multiplication of H. chrysotrichus explants, different sources and concentrations of cytokines combined or not with auxin were tested, as well as the influence of successive subculture execution on multiplication rates. Aspects concerning leaf senescence of sprouts maintained in vitro in Woody Plant Medium (WPM) were also assessed. Concerning rooting in vitro, different concentrations of 3-Indolebutyric acid (IBA) combined with the presence or absence of vermiculite in ½ WPM were tested and, later, the ex vitro acclimatization of plants micropropagated was assessed. Finally, the test was conducted in order to compare the leaf anatomy of H. chrysotrichus plants grown in vivo, in vitro and acclimatized. The seed lots of H. chrysotrichus showed differences in health quality and geminal capacity of the seeds. As for in vitro multiplication of H. chrysotrichus, the use of cytokinins was not considered necessary. High rates of in vitro multiplication were obtained, when considered in vitro formation of buds. As for leaf senescence, the species showed great potential, remaining long periods in the same nutrient medium. There was rooting in vitro in more than 50% of the shoots cultivated in the presence of vermiculite, regardless IBA concentration. It was not possible to satisfactorily promote the acclimatization of micropropagated plants, as only 7.12% of the seedlings survived. Differences in leaf anatomy of plants grown in vivo, in vitro or acclimatized were verified. The results can contribute with information about H. chrysotrichus, concerning aspects related to its in vitro culture and leaf anatomy of the tissues grown in different environments.<br>Handroanthus chrysotrichus é uma espécie florestal nativa do Brasil, que apresenta diversos aspectos importantes tanto sob o ponto de vista econômico, pela produção de produtos madeiráveis, como, também, ecologicamente, uma vez que é indicada para a recuperação de áreas degradadas e de preservação permanente. As sementes desta espécie apresentam problemas referentes à perda da viabilidade quando submetidas ao armazenamento. Sendo assim, a micropropagação emerge como uma alternativa de propagação para a espécie. No entanto, algumas características inerentes às plantas cultivadas in vitro podem promover alterações fisiológicas e anatômicas nos tecidos mantidos nessas condições. Desse modo, o objetivo deste estudo foi avaliar aspectos relacionados à micropropagação e à anatomia foliar de H. chrysotrichus. Primeiramente, foram realizados testes de sanidade e germinação nas sementes provenientes de diferentes lotes desta espécie. Já para a multiplicação in vitro de explantes de H. chrysotrichus foram testadas diferentes fontes e concentrações de citocininas combinadas ou não à auxina, bem como a influência da execução de sucessivos subcultivos nas taxas de multiplicação. Também foram avaliados aspectos relacionados à senescência foliar de brotações desta espécie conservadas in vitro em meio nutritivo WPM. Em relação ao enraizamento in vitro, testaram-se diferentes concentrações de Ácido 3-Indolbutírico - AIB combinadas à presença ou ausência de vermiculita no meio nutritivo ½WPM e, posteriormente, avaliou-se a aclimatização ex vitro das plantas micropropagadas. Por fim, foi realizado o ensaio visando comparar a anatomia foliar de plantas de H. chrysotrichus cultivadas in vivo, in vitro ou aclimatizadas. Os lotes de sementes de H. chrysotrichus apresentaram diferenças na qualidade sanitária e capacidade geminativa das sementes. Na multiplicação in vitro de H. chrysotrichus, o uso de citocininas foi considerado dispensável. Foram obtidas elevadas taxas de multiplicação in vitro em H. chrysotrichus, quando considerada a formação in vitro de gemas. Quanto à senescência foliar, a espécie demonstrou grande potencial, podendo permanecer longos períodos no mesmo meio nutritivo. Houve rizogênese in vitro em mais de 50% das brotações cultivadas na presença de vermiculita, independentemente das concentrações de AIB. Não foi possível promover a aclimatização das plantas micropropagadas de maneira satisfatória, sendo que apenas 7,12% das mudas sobreviveram. Foram verificadas diferenças na anatomia foliar de plantas desenvolvidas in vivo, in vitro ou aclimatizadas. Os resultados obtidos poderão contribuir com informações a respeito de H. chrysotrichus quanto a aspectos relacionados ao seu cultivo in vitro e anatomia foliar dos tecidos cultivados em diferentes ambientes.