Estimating Growth of Caribbean Spiny Lobster Using Mark–Recapture Data

To estimate the growth of the hard‐to‐age Caribbean spiny lobster Panulirus argus in the southeastern USA, a double‐maximum‐likelihood‐estimation method (referred to as the “likelihood model”) has been applied to the mark–recapture data collected in the Florida Keys from 1967 to 2003. Parameters related to the intermolt period and the growth increment have been assessed, and the uncertainty of the parameters has been estimated using the bootstrap resampling method. For better comparison with the previously published step‐wise growth models, an individual‐based model, in which the variance and covariance of model parameters were fully considered, has been developed to simulate growth transition matrices. The simulation results were compared directly by using the Frobenius Norm. The results indicated that the likelihood model produces a more conservative growth estimate with lower uncertainty. However, the likelihood weights should be set with caution. This study can improve our understanding of the growth of the Caribbean spiny lobster. The products can be directly used in the future for integrated size‐structured, stock assessment models for Caribbean spiny lobster; the methods can be easily adaptable to other crustacean species

Translation of Classics by JX Native Literati of Song Dynasty from the Perspective of Translation Aesthetics

With the significant growth of China's comprehensive national power, Chinese culture should not only "bring in" but also "go out". Chinese culture is extensive and profound, and classical literature has reached its peak in the Tang and Song dynasties. Jiangxi has been full of natural resources and outstanding people since ancient times, especially in the Song dynasty, when people of talent came forth in large numbers and created brilliant heritage of classic literary works for their offspring. Therefore, study on the translation of classics by JX native literati of Song Dynasty has very important academic value, application value and popularization meaning. Based on the modern translation aesthetics theory, this paper discusses how English translation of Chinese classics represents the beauty and the aesthetic value of the original from the perspective of rhetorical devices, form, images, and emotion respectively, in the hope to carry forward Chinese classics and Chinese culture

A Study on English Translation of Song Ci From the Perspective of Translation Aesthetics

Song Ci, one of the highest literary achievements in the history of Chinese literature, is of high aesthetic and artistic value, while the study on the translation of Song Ci still has much room for further efforts. Based on the translation aesthetic, a tentative study is made to analyze how the current translation represent the original beauty and what can be refined through example analysis respectively from the perspective of sound, lexis, emotion, and images. The representation of the rhythm, words and feelings is feasible, but due to cultural diversity, the aesthetic value of image is more difficult to reproduce

On Translation of Song Ci From the Perspective of Translation Aesthetics

Song Ci is one of the highest peaks of Chinese literature achievements and so the English translation and the study of the translation have very important academic value, application value and popularization meaning. This paper analyzes the beauty representation of Song lyrics from the perspective of modern translation aesthetics theory. The beauty of the original can be realized from four aspects: sound, lexis, style and emotion. The beauty of sound is mainly represented by the compensatory means of rhythm; lexical beauty by the accurate and beautiful selection of words; the stylistic beauty through the addition of words; the emotional beauty by changing sentence patterns and extending semantics

Hysteretic behaviour of uniaxially thermoformed auxetic foams under 3-point bending low-frequency vibration

The work describes experiments and models related to auxetic (negative Poisson’s ratio) foams subjected to low-frequency and variable amplitude 3-point bending loading. A custom 3-point bending vibration test rig is designed and used to perform the dynamic test of auxetic PU foam beams within low-frequency range (1–20 Hz) and 5 different displacement amplitudes. The auxetic foams tested in this work are manufactured using a simplified and relatively low-cost uniaxially thermoforming compression technique, which leads to the production of foams with transverse isotropic characteristics. Auxetic foam beam samples with two different cutting orientations and different thermoforming compression ratios rc (20–80%) are tested and compared, also with the use of theoretical Euler–Bernoulli-based and finite element models. The dynamic modulus of the foams increases with rc, ranging between 0.5 and 5 MPa, while the dynamic loss factor is marginally affected by the compression ratio, with overall values between 0.2 and 0.3. The auxetic PU foam has a noticeable amplitude-dependent stiffness and loss factors, while the dynamic modulus increases but slightly decreases with the frequency. The dynamic modulus is also 20–40% larger than the quasi-static one, while the dynamic and static loss factors are quite close. A modified Bouc–Wen model is also further developed to capture the amplitude and frequency-dependent properties of the conventional and auxetic foams with different volumetric compression ratios. The model shows a good agreement with the experimental results

Stress Resistance Screen in a Human Primary Cell Line Identifies Small Molecules That Affect Aging Pathways and Extend Caenorhabditis elegans' Lifespan.

Increased resistance to environmental stress at the cellular level is correlated with the longevity of long-lived mutants and wild-animal species. Moreover, in experimental organisms, screens for increased stress resistance have yielded mutants that are long-lived. To find entry points for small molecules that might extend healthy longevity in humans, we screened ∼100,000 small molecules in a human primary-fibroblast cell line and identified a set that increased oxidative-stress resistance. Some of the hits fell into structurally related chemical groups, suggesting that they may act on common targets. Two small molecules increased C. elegans' stress resistance, and at least 9 extended their lifespan by ∼10-50%. We further evaluated a chalcone that produced relatively large effects on lifespan and were able to implicate the activity of two, stress-response regulators, NRF2/skn-1 and SESN/sesn-1, in its mechanism of action. Our findings suggest that screening for increased stress resistance in human cells can enrich for compounds with promising pro-longevity effects. Further characterization of these compounds may reveal new ways to extend healthy human lifespan

Modeling of Contention-free and Contention MAC Protocols for Broadband over Power Line Networks

Although the power lines were designed to deliver electric power, not for communications, a large volume of research on Broadband over Power line communications (BPLC) had appeared over the decades. The successful transmission of data over the power lines will make the BPL technology a cost-effective solution for the so-called “last miles” in communication networks [1]. Recently, this effort received a significant boost by the approval of the IEEE P1901 standard [20]. This standard specifies the regulations for the operation of the Physical and MAC layers of the BPL network. It proposes two major MAC protocols – Time Division Multiplexing Access (TDMA) for the contention-free access and Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) for the contention access. In this thesis, we present the performance models of the contention-free access and the contention access mechanisms. For the contention-free transmission mode, we determine analytically the probability distribution of the number of beacon periods that it takes to transmit a MAC frame over multi-hop communications subject to transmission errors, then, we developed an analysis that determines the network capacity, the number of users that the system may support. Also, we determine the MAC efficiency of the network when it’s operating under both contention-free and contention mode. These results may be helpful in the design of BPL networks