Cooperation in prisoner’s dilemma games can usually be sustained only if the game has an infinite horizon. We analyze to what extent the theoretically crucial distinction of finite vs. infinite-horizon games is reflected in the outcomes of a prisoner’s dilemma experiment. We compare three different experimental termination rules in four treatments: a known finite end, an unknown end, and two va...

Accurate and rapid recognition of fruit is the guarantee intelligent persimmon picking. Given changes in light occlusion conditions a natural environment, this study developed detection method based on improved YOLOv5 model. This approach has several critical steps, including optimizing loss function traditional YOLOv5, combining centralized feature pyramid (CFP), integrating convolutional bloc...

Low operation efficiency and poor working performance are the main reasons that restrict application of pneumatic date pickers. In this study, it is proposed to use positive pressure air flow blowing negative suction pick jujube fruit inertia remove impurities design a collaborative type harvester (P-N JH). The second-order regression model test factors response indexes was established by using...

OBJECTIVE The use of smaller dishware as a way of reducing food consumption has intuitive appeal and is recommended to the general public. Recent experimental studies have failed to find an effect of plate size on food intake, although the methods used across studies have varied. The aim of the present study was to examine the effect that bowl size had on snack food consumption in a 'typical' s...

This paper investigates controllability of underactuated rolling systems consisting of a smooth object rolling on a moving smooth surface. Our system consists of a spherical ball which rolls on the inside of an ellipsoidal bowl. The bowl has a single translational degree of freedom not aligned with any of its principal axes. The single control input is the bowl's acceleration in this direction....

Super Bowl XLVIII drew the largest television audience in American history with 111.5 million US viewers.[1] This surpassed the previous record set by Super Bowl XLVI two years prior with 111.3 million viewers.[2] In fact, the last four Super Bowls have been the four most watched TV programs in U.S. history.[20] Despite the uneventful game between the Denver Broncos and the Seattle Seahawks, wh...

ness, nor founded on any profound scientific deduction. A bowl to be kept and pressed to the hips if the woman lies on her back, to the upper and posterior part of the thigh if she lies on her side, in order to catch discharge of any kind which may come from the vulva. Such a bowl I have used for many years in my ordinary management of labour, and I have so high an opinion of its utility that I...

This article provides a review and synthesis of scholarly knowledge of Depression-era droughts on the North American Great Plains, a time and place known colloquially as the Dust Bowl era or the Dirty Thirties. Recent events, including the 2008 financial crisis, severe droughts in the US corn belt, and the release of a popular documentary film, have spawned a resurgence in public interest in th...