330,276 research outputs found
Observing giant panda habitat and forage abundance from space
No full textGiant pandas are obligate bamboo grazers. The bamboos favoured by giant pandas are typical forest understorey plants. Therefore, the availability and abundance of understorey bamboo is a key factor in determining the quantity and quality of giant panda food resources. However, there is little or no information about the spatial distribution or abundance of bamboo underneath the forest canopy, due to the limitations of traditional ground survey and remote sensing classification techniques. In this regard, the development of methods that can predict the understorey bamboo spatial distribution and cover abundance is critical for an improved understanding of the habitat, foraging behaviour and distribution of giant pandas, as well as facilitating an optimal conservation strategy for this endangered species. The objectives of this study were to develop innovative methods in remote sensing and GIS for estimating the giant panda habitat and forage abundance, and to explain the altitudinal migration and the spatial distribution of giant pandas in the fragmented forest landscape. It was concluded that 1) the vegetation indices derived from winter (leaf-off) satellite images can be successfully used to predict the distribution of evergreen understorey bamboo in a deciduous-dominated forest, 2) winter is the optimal season for quantifying the coverage of evergreen understorey bamboo in a mixed temperate forest, regardless of the classification methods used, 3) a higher mapping accuracy for understorey bamboo in a coniferous-dominated forest can be achieved by using an integrated neural network and expert system algorithm, 4) the altitudinal migration patterns of sympatric giant pandas and golden takins are related to satellite-derived plant phenology (a surrogate of food quality) and bamboo abundance (a surrogate of food quantity), 5) the driving force behind the seasonal vertical migration of giant pandas is the occurrence of bamboo shoots and the temperature variation along an altitudinal gradient, 6) the satellite-derived forest patches occupied by giant pandas were significantly larger and more contiguous than patches where giant pandas were not recorded, indicating that giant pandas appear sensitive to patch size and isolation effects associated with forest fragmentation. Overall, the study has been shown the potential of satellite remote sensing to map giant panda habitat and forage (i.e., understorey bamboo) abundance. The results are important for understanding the foraging behaviour and the spatial distribution of giant pandas, as well as the evaluation and modelling of giant panda habitat in order to guide decision-making on giant panda conservation. <br/
Physics Performance Report for PANDA: Strong Interaction Studies with Antiprotons
No full textTo study fundamental questions of hadron and nuclear physics in interactions of antiprotons with nucleons and nuclei, the universal PANDA detector will be built. Gluonic excitations, the physics of strange and charm quarks and nucleon structure studies will be performed with unprecedented accuracy thereby allowing high-precision tests of the strong interaction. The proposed PANDA detector is a state-of-the art internal target detector at the HESR at FAIR allowing the detection and identification of neutral and charged particles generated within the relevant angular and energy range. This report presents a summary of the physics accessible at PANDA and what performance can be expected
The WTP for property rights for the Giant Panda: can a charismatic species be an instrument for conservation of natural habitat?
No full textThe paper presents the results from a stated preference study to address issues concerning the potential for using flag-ship species, such as the Giant Panda, to purchase the property rights for the conservation of natural habitat. The study finds, first, that there is clear WTP for acquiring the property rights for panda habitat. The nature of this demand is found both convincing and logically coherent in that it is an increasing function of land
(at a diminishing rate). Secondly, the study decomposed the elicited values into genetic stock, animal welfare and implicit biodiversity values. The results show that the latter type of value consist of almost half of total value implying that the Panda is in fact a potential instrument for greater biodiversity conservation. Thirdly, the study shows that these implicit biodiversity values are dependent on the preservation of the flagship species itself, implying that the panda is not only a potential instrument for habitat conservation, but a necessary one. Finally, the extent to which the flagship approach can be capable of contributing to wider biodiversity conservation is discussed
What is driving the increased demand for red panda pelts?
No full textRecent seizures of red panda pelts suggest an increasing illegal trade. Our study documents the socio-cultural perspectives affecting red panda conservation in Nepal in an attempt to determine what might be driving this increased trade. To do this, we interviewed local people; reviewed published and unpublished works, websites, and newspapers; and consulted experts. The majority of people living in red panda habitat seem familiar with this species, but it rarely has any medicinal, cultural, or religious significance. Currently, what is driving the demand for pelts is a mystery and cannot be explained by inherent negative perceptions about the animal’s value to society or positive perceptions about its economic value within Nepal. Nonetheless, we suggest that insufficient knowledge about red panda-related crime, miscommunication during awareness-building campaigns, investigators’ influence indicating a demand for pelts with a high price, and poverty-induced, easy money-making motives could be possible drivers for increasing the supply of pelts
A Forgery Attack against PANDA-s
No full textAbstract. PANDA is an authenticated encryption scheme designed by Ye et al., and submitted to the CAESAR competition. The designers claim that PANDA-s, which is one of the designs of the PANDA-family, provides 128-bit security in the nonce misuse model. In this note, we describe our forgery attack against PANDA-s. Our attack works in the nonce misuse model. It exploits the fact that the message processing function and the finalization function are identical, and thus a variant of the length-extension attack can be applied. We can find a tag for a pre-specified formatted message with 2 encryption oracle calls, 264 computational cost, and negligible memory
Economic development in Orissa: Growth without inclusion?
No full textThe economy of Orissa has been lagging behind the national economy by several decades. Its per capita net state domestic product, a measure of average income, stood at Rs.20200 for 2006-07 which falls behind the national average by about 35 per cent. Moreover, the gross domestic product of the state grew by a considerable lower rate than many other states for a long time despite its high growth potential. Drawing on the experience of several countries as well as that of India, various studies concluded that economic growth was the most critical factor for reduction of incidence of poverty in the state. It now seems that there has been a turning point in the last few years and the economy of Orissa has witnessed an acceleration in terms of the gross state domestic product (GSDP). The evidence presented here clearly shows that the economy is poised for a take-off to a high growth phase, almost similar to that at the national level. On the poverty dimension, however, the recent developments have been gloomy, to say the least. The consumption expenditure surveys carried out by the National Sample Survey Organisation (NSSO), the standard source of data for poverty analysis in India by official and non-official investigators, shows that the period 1993-2004 has witnessed a reversal of the achievements made on the poverty front during 1983-93. The prima facie evidence points towards a case of growth without inclusion and needs further probe.Gross State Domestic Product (GSDP), India, Poverty
Physics Performance Report for PANDA: Strong Interaction Studies with Antiprotons
No full text216 pagesTo study fundamental questions of hadron and nuclear physics in interactions of antiprotons with nucleons and nuclei, the universal PANDA detector will be built. Gluonic excitations, the physics of strange and charm quarks and nucleon structure studies will be performed with unprecedented accuracy thereby allowing high-precision tests of the strong interaction. The proposed PANDA detector is a state-of-the art internal target detector at the HESR at FAIR allowing the detection and identification of neutral and charged particles generated within the relevant angular and energy range. This report presents a summary of the physics accessible at PANDA and what performance can be expected
Physics Performance Report for PANDA: Strong Interaction Studies with Antiprotons
No full text216 pagesTo study fundamental questions of hadron and nuclear physics in interactions of antiprotons with nucleons and nuclei, the universal PANDA detector will be built. Gluonic excitations, the physics of strange and charm quarks and nucleon structure studies will be performed with unprecedented accuracy thereby allowing high-precision tests of the strong interaction. The proposed PANDA detector is a state-of-the art internal target detector at the HESR at FAIR allowing the detection and identification of neutral and charged particles generated within the relevant angular and energy range. This report presents a summary of the physics accessible at PANDA and what performance can be expected
A practical forgery and state recovery attack on the authenticated cipher PANDA-s
No full textPANDA is a family of authenticated ciphers submitted to CARSAR, which consists of two ciphers: PANDA-s and PANDA-b. In this work we present a
state recovery attack against PANDA-s with time complexity about under the known-plaintext-attack model, which needs 137 pairs of known plaintext/ciphertext and about 2GB memories. Our attack is practical in a small workstation. Based on the above attack, we further deduce a forgery attack against PANDA-s, which can forge a legal ciphertext of an arbitrary plaintext . The results show that PANDA-s is insecure
PANDA Phase One: PANDA collaboration
No full textThe Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany, provides unique possibilities for a new generation of hadron-, nuclear- and atomic physics experiments. The future antiProton ANnihilations at DArmstadt (PANDA or P ¯ ANDA) experiment at FAIR will offer a broad physics programme, covering different aspects of the strong interaction. Understanding the latter in the non-perturbative regime remains one of the greatest challenges in contemporary physics. The antiproton–nucleon interaction studied with PANDA provides crucial tests in this area. Furthermore, the high-intensity, low-energy domain of PANDA allows for searches for physics beyond the Standard Model, e.g. through high precision symmetry tests. This paper takes into account a staged approach for the detector setup and for the delivered luminosity from the accelerator. The available detector setup at the time of the delivery of the first antiproton beams in the HESR storage ring is referred to as the Phase One setup. The physics programme that is achievable during Phase One is outlined in this paper. © 2021, The Author(s)
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