Numerosos são os estudos sobre a eternidade na filosofia de Espinosa, contudo, poucas são as pesquisas sobre o tempo e a duração, afinal, por que perguntar-se sobre o tempo numa filosofia da eternidade? Diferentemente dos seus primeiros escritos, na sua obra máxima, a Ética, a singularidade da definição espinosana da eternidade e da duração encontra-se justamente em se restringir à relação entre essência e existência, sem qualquer relação com o tempo. Contudo, acompanhando a gênese dos conceitos de tempo, duração e eternidade, desde os seus primeiros escritos até a Ética, veremos como este deslocamento conceitual revela um duplo movimento: é por desvincular o tempo da duração e da eternidade que a existência ganhará uma profundidade ontológica, ética e política; por outro lado, o tempo ganhará preponderante papel na constituição da imaginação. Nesse duplo movimento, compreenderemos como os conceitos de duração e eternidade, que têm sua terra natal em âmbito ontológico, permitem iluminar outras paisagens, estas sim diretamente vinculadas ao problema da temporalidade: a vida passional e a vida política. / There are numerous studies about the eternity in Spinozas philosophy, however, there are few researches about the time and duration, after all, why to ask on the times quote in a philosophy of the eternity? Differently of his first writings, in Ethics, the singularity of Spinozas definition of eternity and duration is exactly going to restrict essence and existence relation, without any relation with time. However, following the time, duration and eternity concepts genesis, since his first writings until the Ethics, we will see how this conceptual displacement opens to a double movement: for separating duration and eternity from time, the human existence will gain a ontological, ethical and politics depth; on the other hand, time will gain prominent role in the imaginations constitution. In this double movement, we will understand how these concepts, duration and eternity, that has its native land in ontological scope, allows us to illuminate other landscapes directly tied with the problem of the temporality: the passional life and the political life.

The American Academy of Pediatrics recommends that babies be exclusively breastfed for the first six months of life, and continue to breastfeed throughout the first year of life and as long after as is mutually desired. Recent survey data suggests that initiation rates of breastfeeding are high; according to the CDC, 75.0 percent of children in the U.S. have been breastfed. Although initiation rates of breastfeeding are high, breastfeeding duration rates consistent are much lower; 33.0 percent of infants were exclusively breastfed at three months, and only 13.3 percent of infants were exclusively breastfed at six months. Additionally, only 22.4 percent of infants were still breastfeeding at twelve months. Social and behavioral research has identified social support received from the infant's father to be one of the most important predictors of breastfeeding initiation and duration. Although several prior studies have identified paternal attitudes and support to be important influences of breastfeeding duration, few studies have been conducted to understand the specific forms of paternal support that are most important to mothers, and the forms of paternal support that are most predictive of breastfeeding duration. Also, to the author's knowledge, this was the first study to investigate negative forms of paternal support that may discourage breastfeeding. This mixed-methods study sought to better understand the perceived forms of positive and negative paternal support for breastfeeding amongst a cohort of first-time parent couples. A longitudinal study design was utilized, in which each parent participated in an in-depth interview at four time points: prenatally, and at one, three, and six month post-partum. At each time point, mothers and fathers also completed a quantitative survey; breastfeeding intention was assessed at the prenatal period, and information about current breastfeeding status was collected at the post-natal time points. A final sample of fourteen parent couples was recruited from Champions for Children prenatal classes, and all interviews took place between June 2013 and February 2014. The quantitative portion of this study found that at one month post-partum, mothers with higher prenatal breastfeeding intention scores were more likely to still be breastfeeding (85.7%), with the largest percentage of mothers still exclusively breastfeeding (50.0%); additionally, mothers with lower prenatal breastfeeding intention scores were more likely to be exclusively formula feeding (14.3%) (p = 0.03). In general, mothers with higher prenatal breastfeeding intention scores also identified more types of positive paternal support for breastfeeding; however, the only association found to be statistically significant was appraisal support (p=0.03). For the qualitative portion of this study, expectant mothers and fathers identified forms of paternal support that they perceived to be either positively or negatively supportive of breastfeeding. More often than any other type of positive support, mothers and fathers mentioned a father providing instrumental support as helpful to sustain breastfeeding, and at the post-natal time points, almost every mother identified help with household chores as being the support they receive most often which helps them to sustain breastfeeding. Whereas mothers mentioned instrumental support most often when asked to identify forms of paternal support for breastfeeding, after delivery mothers indicated that emotional support was truly most valuable; almost every mother identified words of encouragement and motivation as being the support they receive from their partner that is most important, and which helps to sustain breastfeeding. At the post-natal time-points very few mothers or fathers identified any forms of negative support actually received from their partner; mothers and fathers instead elaborated on examples of support that they perceived as negative for a mother to receive from her partner including failure to provide positive support, indifference to infant feeding method, a negative attitude towards breastfeeding or preference for formula, and negative or discouraging comments. At the post-natal time points, the majority of mothers perceived a father being verbally negative about breastfeeding as the worst form of negative support for breastfeeding. This study primarily used qualitative methods to gather rich, in-depth personal accounts of first-time mothers' and first-time fathers' perceptions of paternal support for breastfeeding. This provided valuable insight and allowed for an emic perspective of the participants' personal experiences which led to a more in-depth understanding of the specific forms of paternal support most important to mothers. Unlike previous studies conducted to better understand paternal support for breastfeeding, this study utilized a longitudinal design which allowed for the collection of data at four time points, both pre- and post-natal. A longitudinal design strengthened this study as perceived forms of paternal support were compared at different time points, and shifts in perceptions over time amongst mothers and fathers were captured. This study contributes new knowledge to the field of breastfeeding promotion regarding the specific forms of paternal support that mothers and fathers perceive as positive or negative of breastfeeding. It is imperative to improve our understanding of the precise forms of paternal support which are most positively associated with breastfeeding exclusivity and duration, so that future efforts to increase positive paternal support and decrease negative paternal support are most effective. The findings of this study can be used to help engage fathers in the breastfeeding process, including educating them on the specific ways that they can offer meaningful support to their breastfeeding partner.

<p>Med utgångspunkt från att det finns en antydan till en berättelse i datorspelet Final Fantasy IX argumenterar denna uppsats för att spelet innehar en narrativ struktur. Diskussionen förs genom att undersöka om vi kan uppfatta spelet som en text; om det är möjligt att applicera Gérard Genettes teorier om berättelsers hastighet samt om det är möjligt att urskilja en dubbel kronologi i spelet. Som teoretisk bakgrund används datorspelsforskning, textteori, narratologi samt termer hämtade från ny medieforskning, vars ändamål är att undersöka om vi kan utläsa en berättelse i Final Fantasy IX.</p>

Pulse Width Modulation (PWM) has been used extensively for motor control, DC-AC converters, DC-DC converters and in audio applications. The conventional method of generating a pulse width modulated signal involves generating an accurate sawtooth or triangle wave using analog circuits. In CMOS, being analog circuit intensive puts extra constraints on the fabrication process used for manufacture, thus requiring a higher cost than digital CMOS. Delta-Sigma Modulation on the other hand is analog intensive, but requires only quality capacitor matching, which can be obtained with current digital CMOS processes. This thesis describes a method to generate a digital PWM with pulse dithering using a Delta-Sigma modulator. The Delta-Sigma modulator provides accuracy and allows the circuit to be implemented in a digital CMOS process, while the pulse dithering in the PWM spreads out harmonic noise generated from the PWM fundamental frequency. / Graduation date: 1998

E.R. Kretzmer. / "Reprinted from the Proceedings of the Institute of Radio Engineers ; v.35, no.11" / Includes bibliographical references. / Army Signal Corps Contract No. W-36-039 sc-32037.

Reading requires the orchestration of visual, attentional, language-related, and oculomotor processing constraints. This study replicates previous effects of frequency, predictability, and length of fixated words on fixation durations in natural reading and demonstrates new effects of these variables related to previous and next words. Results are based on fixation durations recorded from 222 persons, each reading 144 sentences. Such evidence for distributed processing of words across fixation durations challenges psycholinguistic immediacy-of-processing and eye-mind assumptions. Most of the time the mind processes several words in parallel at different perceptual and cognitive levels. Eye movements can help to unravel these processes.

Med utgångspunkt från att det finns en antydan till en berättelse i datorspelet Final Fantasy IX argumenterar denna uppsats för att spelet innehar en narrativ struktur. Diskussionen förs genom att undersöka om vi kan uppfatta spelet som en text; om det är möjligt att applicera Gérard Genettes teorier om berättelsers hastighet samt om det är möjligt att urskilja en dubbel kronologi i spelet. Som teoretisk bakgrund används datorspelsforskning, textteori, narratologi samt termer hämtade från ny medieforskning, vars ändamål är att undersöka om vi kan utläsa en berättelse i Final Fantasy IX.

The existing literature finds negative associations between mental illness and labor market outcomes. Using data from the 2007 to 2011 National Health Interview Survey, this study examines the consequences of emotional (depression, anxiety, or other emotional problems) and psychological (ADD, bipolar disorder, schizophrenia, or other mental problems) problems on four aspects of labor market decisions: the probability of participating in the labor force, the likelihood of working full time, the average number of hours worked per week and annual earnings. In addition to analyzing the effects of either having or not having a mental illness, I also test if there is a relationship between the duration of having a mental illness and labor market behaviors. I find evidence to show that having an emotional or psychological problem has an adverse impacts on all four aspects of labor market outcomes. Additionally, the results suggest that unconditional on having a mental illness, duration has statistically significant effects on labor market behaviors, while conditional on having a mental illness, statistical significance is not as prevalent.

Data from longitudinal surveys give rise to many statistical challenges. They often come from a vast, heterogeneous population and from a complex sampling design. Further, they are usually collected retrospectively at intermittent interviews spaced over a long period of time, which gives rise to missing information and loss to follow-up. As a result, duration data from this kind of surveys are subject to dependent censoring, which needs to be taken into account to prevent biased analysis. Methods for point and variance estimation are developed using Inverse Probability of Censoring (IPC) weights. These methods account for the random nature of the IPC weights and can be applied in the analysis of duration data in survey and non-survey settings. The IPC estimation techniques are based on parametric estimating function theory and involve the estimation of dropout models. Survival distributions without covariates are estimated via a weighted Kaplan-Meier method and regression modeling through the Cox Proportional Hazards model and other models is based on weighted estimating functions. The observational frameworks from Statistics Canada's Survey of Labour and Income Dynamics (SLID) and the UK Millenium Cohort Study are used as motivation, and durations of jobless spells from SLID are analyzed as an illustration of the methodology. Issues regarding missing information from longitudinal surveys are also discussed.

Existing microactuator limitations prevent control of small-scale, spin-stabilized vehicles. These applications require actuators insensitive to shock that have forces on the order of Newtons and millisecond control periods. This research presents batch-fabrication lamination approaches for the realization of large arrays of high-impulse, short-duration gas generator actuators (GGAs), and system implementation approaches to integrate these GGAs into a small-scale, spin-stabilized projectile for the purpose of generating steering forces on the projectile. Electronic packaging and MEMS processing are combined to batch-fabricate millimeter-scale GGAs insensitive to large shocks. Robust, prefabricated thermoplastic and metal films are patterned by laser machining or photolithography, and multilayer devices are assembled by adhesive lamination. The GGAs remained operational after 10,000 g shocks. Optimized design and propellant selection enables control of the force profile and actuation timing. Rapid force rise times are achieved using appropriately selected solid propellants and specially designed hot-wire igniters that create a larger combustion fronts. By reshaping the combustion profile of the solid propellant, tens of Newtons are generated within milliseconds. In addition to force control, the timing of the force application was controllable to within 1 ms for optimized GGAs. Performance results demonstrate that GGA actuator arrays actuate within appropriate timescales and with enough authority to control a 40 mm projectile with a spin rate of 60 Hz. After actuator characterization, GGAs, control electronics, and power supply are mounted into a 40 mm diameter projectile, and a full flight system was flown to demonstrate divert authority of the GGAs.