The kinematics of the Gould Belt is considered taking into account its orientation in space and the motions of its member stars parallel and perpendicular to the galactic plane. An analysis of Hipparcos data for these stars, complemented with published radial velocities, shows that there is a mild gradient along the galactic plane in the velocity component perpendicular to it. The maintenance o...

However, many existing diagnostics for the tropical belt edge latitudes are subjective, with trends in the width of the tropical belt sensitive to the value of the parameters chosen. Further, it is unknown if widely-used reanalysis products reliably capture the seasonal cycle and interannual variability of the width of the tropical belt. Unfortunately, the dearth of wind observations in the tro...

This article aims to design a kind of gripping-belt speed automatic tracking system of traditional Chinese herbal harvester by AT89C52 single-chip micro computer as a core combined with fuzzy PID control algorithm. The system can adjust the gripping-belt speed in accordance with the variation of the machine’s operation, so there is a perfect matching between the machine operation speed and the ...

We propose a system to measure the dimensions of carton boxes carried on a conveyer belt with an accuracy of 5mm, required in logistic applications. Our system estimates the dimensions through a series of depth images with relatively low resolution taken by unsynchronized multiple sensors. To achieve the accuracy, we first obtain the dimensions via the distance between parallel planes instead o...

Farmland values are often viewed as the bellwether for the U.S. farm sector. Historically, booming farm incomes have been quickly capitalized into farmland values. Over the past year, cropland values in the Corn Belt have jumped more than 25% above year ago levels according to various university and Federal Reserve surveys. Moreover, ranchland values are posting strong double-digit gains in som...

We present a new analysis of the currently available orbital elements for the known Kuiper belt objects. In the nonresonant, main Kuiper belt, we Ðnd a statistically signiÐcant relationship between an objectÏs absolute magnitude (H) and its inclination (i). Objects with H \ 6.5 (i.e., radii km for a Z170 4% albedo) have higher inclinations than those with H [ 6.5 (radii km). We have shown that ...

Data from lunar samples (Apollo, Luna, and lunar meteorites) indicate that the Moon was subjected to an intense period of bombardment around 3.85 billion year ago (Ga). Here a short review of this topic is given. Different interpretations exist, which either take this as the tail end of an intense but declining accretion period, or which consider a spike in the accretion rate at that time. The ...

Aims. Studies of the debris disk phenomenon have shown that most systems are analogous to the Edgeworth-Kuiper Belt (EKB). However a rare subset of sun-like stars possess dust which lies, in contrast, in the terrestrial planet region. In this study we aim to determine how many sources with apparent mid-infrared excess are truly hosts of warm dust, and investigate where the dust in these

Probability for a primordial black hole to invade the Kuiper belt was calculated. We showed that primordial black holes of certain masses can significantly change asteroids’ orbits. These events may result in disasters, local for our solar system and global for the Earth (like the Tunguska meteorite). We also estimated how often such events occur.

specific features of the structure of the ground litter invertebrate community in forest belt ecosystems in the ukrainian steppe zone have been considered. for 14 years invertebrate fauna of the litter of 176 forest belt sites with different composition has been studied with the aid of soil traps. the main characteristics of litter invertebrate communities (total population, a number of species...