A difference equation is presented to describe traffic flow on a highway. The difference equation model is derived from the optimal velocity models formulated in terms of the differential equations. It is compared with the differential equation models. We investigate phase transitions among the freely moving phase, the coexisting phase in which jams appear, and the uniform congested phase. The ...

The strawberry jam is rich in bioactive compounds. It is economically and commercially important and widely consumed. Different strawberries cultivars can be used for its preparation, however, a careful selection should be performed to guarantee the preservation of bioactive compounds during jam storage. Two strawberry cultivars (Camarosa and American 13) were analyzed by HPLC, three anthocyani...

In this paper, we establish and analyze a traffic flow model which describes the formation and dynamics of traffic jams. It consists of a Pressureless Gas Dynamics system under a maximal constraint on the density and is derived through a singular limit of the Aw-Rascle model. From this analysis, we deduce the particular dynamical behaviour of clusters (or traffic jams), defined as intervals whe...

The Nagel-Schreckenberg traffic flow model shows a transition from a free flow regime to a jammed regime for increasing car density. The measurement of the dynamical structure factor offers the chance to observe the evolution of jams without the necessity to define a car to be jammed or not. Above the jamming transition the dynamical structure factor S(k, ω) exhibits for a given k-value two max...

Brain metastasis is one of the most deadly types of metastasis, frequently seen as a result of cancer spread from lung cancer, breast cancer and malignant melanoma. A key cellular structure in controlling brain metastasis is the blood-brain barrier (BBB). The BBB is known to protect metastatic tumour cells from chemotherapy and antitumor immunity. On the other hand, the BBB is also a key cellul...

The optimizat ion of traffic flow on roads and highways of modern industrialized countries is key to their economic growth and success. Besides, the reduction of traffic congestions and jams is also desirable from an ecological point of view as it yields a contribution to climate protection. In this art icle, we stick to a microscopic traffic simulation model and interpret the task of traffic f...

It is shown that a variety of deterministic cellular automaton models of highway traffic flow obey a variational principle which states that, for a given car density, the average car flow is a non-decreasing function of time. This result is established for systems whose configurations exhibits local jams of a given structure. If local jams have a different structure, it is shown that either the...

We present a method to automatically collect data about distance and speed of vehicles ahead of a car participating in highway traffic. The method should support the registration of traffic in front of a driving car over long periods of time in order to be able to detect over-persistent congestion (OPC) situations. The method requires no specialized devices; it is based on a simple video stream...

In Study 1, college students' preferences for different brands of strawberry jams were compared with experts' ratings of the jams. Students who analyzed why they felt the way they did agreed less with the experts than students who did not. In Study 2, college students' preferences for college courses were compared with expert opinion. Some students were asked to analyze reasons; others were ask...

Ice jam, a unique hydrological phenomenon of rivers in cold regions, is major cause ice flooding. There are many different kinds damage that can result from jams: e.g., blockage the water flow, rising levels flood farmland and dwellings, to hydraulic structures, interruptions shipping. The formation an jam influenced by various factors associated with fields study. accumulation thus complex pro...