The hormone melatonin is known to play an important role in regulating many seasonal changes in physiology, morphology and behaviour. In birds, unlike in mammals, melatonin has thus far been thought to play little role in timing seasonal reproductive processes. This view is mainly derived from laboratory experiments on male birds. This study tests whether melatonin is capable of influencing the...

A dynamic model of a manipulative machine for automobile clutch is setup in ADAMS and further analysis is made to an automatic clutch for AMT. Since the engaging process of clutch is complex and related to riding performance and life span of friction plate, it has to be researched intensively using modern control theory. Adaptive control is effective to avoid engine flameout, which guarantees s...

A recent study proposed that incubation behaviour (i.e. type of parental care) in theropod dinosaurs can be inferred from an allometric analysis of clutch volume in extant birds. However, the study in question failed to account for factors known to affect egg and clutch size in living bird species. A new scaling analysis of avian clutch mass demonstrates that type of parental care cannot be dis...

The Powertrain Dynamics Library (PTDynamics) has been developed using a new approach to modelling the mechanics of rotating MultiBody systems. This paper will highlight the recent developments within the PTDynamics library with a focus on the dynamic torque converter and wet clutch models that enable the prediction of the launch feel of automatic and dual clutch transmission equipped vehicles. ...

A promising direction in developing up-to-date transport vehicles is the use of transmissions, an essential element which a dual-clutch. Improving functional performance, energy efficiency, and environmental friendliness are relevant require appropriate research. The object study dry dual-clutch working with manual transmission high efficiency. In proposed design scheme, rotary lever movable ca...

Climate change is expected to affect temperature and precipitation means and extremes, which can affect population vital rates. With the added complexity of accounting for both means and extremes, it is important to understand whether one aspect is sufficient to predict a particular vital rate or if both are necessary. To compare the predictive ability of climate means and extremes with geograp...

Increasing demands on comfort, performance, and fuel efficiency in vehicles lead to more complex transmission solutions. One such solution is the Automated Manual Transmission (AMT). It works just like an ordinary manual transmission but the clutch and the gear selection are computer controlled. In this way high efficiency can be accomplished with increased comfort and performance. To be able t...

The performance of an automatic transmission is dependent on the dynamics its components, such as clutch, planetary gear, and torque converter. In particular, clutch pressure gear output speed can affect overall transmission. this paper, It will present kinematic relations, structure, calculating impact braking brake to slip vehicle Toyota Camry used A140L. Since then, graph describing dependen...

Tolerancing is an important issue in product and manufacturing process designs. The allocation of design tolerances between the components of a mechanical assembly and manufacturing tolerances in the intermediate machining steps of component fabrication can significantly affect the quality, robustness and life-cycle of a product. Stimulated by the growing demand for improving the reliability an...

Theories of clutch size determination have focused on first broods or on seasonal trends in clutch size. Clutch size is controlled by combination of genetic, ontological and environmental factors (KENNEDY & WHITE, 1991). In recent years, an increasing number of studies have demonstrated the existence of significant repeatability in ecologically important traits in natural bird populations (e.g....