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Effects of anthropogenic noise on marine fish have drawn increasing attention. In order to explore the effects of underwater noise on false kelpfish (Sebasticus marmoratus), the acoustic stimulus experiments were carried in a tank with three types of noise sources and analyzed with behavioral method. The results showed that when peak and effective sound pressure levels (SPLpeak, SPLrms) were above...
Underwater acoustic (UWA) channel is a complex time-space- and frequency-variant channel, which is one of the most difficult wireless communication channels so far. Coherent communication has become a hotspot in high speed underwater acoustic communication. To achieve the low bit error rate and high data transmission rate, the channel equalization technique must be introduced for coherent underwater...
Underwater noise levels are increasing due to anthropogenic activities, especially in the densely populated coastal area and open ocean. Many studies have been evaluating the effect of anthropogenic noise on marine fish. However, the more information is needed to predict any negative effects. The startle behavior responses of the Blackhead seabream (Acanthopagrus schlegelii) were researched in this...
A large body of work can be found in literature on Design Space Exploration (DSE) methods for distributed embedded system architecting (DESA). However, almost none of these methods is successfully adopted in automotive industry. To clarify the reasons, this paper 1) analyzes the current state of the art (SOTA) on DSE methods for DESA through a systematic literature study, focusing on the assumed architecting...
In vehicular communication protocol stacks, received messages may not always be decoded successfully due to the complexity of the decoding functions, the uncertainty of the communication load and the limited computation resources. Even worse, an improper implementation of the protocol stack may cause an unfair data age distribution among all the communicating vehicles (the receiving bias problem)...
There are plentiful attempts for increasing the efficiency, generality and optimality of the Design Space Exploration (DSE) algorithms for resource allocation problems of distributed embedded systems. Most contemporary approaches formulate DSE as an optimization or SAT problem, based on a set of predefined constraints. In this way, the end users lose the flexibility to guide and customize the exploration...
With the rapid increase in the construction of offshore wind farms and other coastal engineering projects, people begin to realize that anthropogenic underwater noise such as pile driving and underwater explosions can have an adverse impact on marine life. The Japanese eel (Anguilla japonica) is an important economic fish species in China, Japan and South Korea due to its high-quality meat. As most...
A key decision for the synthesis of automotive embedded systems is the allocation of application software components to ECUs. Design Space Exploration (DSE) supports the decision by automatically characterizing and evaluating a large number of possible design alternatives, and thereby suggesting the optimal ones. A primary challenge for applying DSE methods to support this decision is to reduce the...
In the process of the digital base-band transmission, in order to eliminate the intersymbol interference and achieve the objective of the base-band shaping filter, in this paper based on Gaussian filter designed a digital realization method of the base-band shaping filter is introduced. First of all, it introduces commonly used the base-band shaping filter in digital system. Secondly, through the...
The importance and potential advantages with a comprehensive product architecture description are well described in the literature. However, developing such a description takes additional resources, and it is difficult to maintain consistency with evolving implementations. This paper presents an approach and industrial experience which is based on architecture recovery from source code at truck manufacturer...
Structurally reconfigurable metamaterials showing terahertz frequency tunability are presented, which employ deformable microelectromechanical curved cantilevers for tuning the resonance frequency of the electric split-ring resonators. The observed tunability can be applied in tunable metamaterial devices.
Saturable absorption of graphene was experimentally and theoretically investigated in femtosecond time regime with the z-scan technique. The initial ultrafast carrier relaxation time was determined to be ∼8(±3) fs. Such ultrafast dynamics is far beyond the time resolution of other ultrafast techniques with typical hundred fs laser pulses. Our results strongly suggest that graphene is an excellent...
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