643 research outputs found
Power Structure and Its Stability in North-East Asia
Its my pleasure to share viewpoints on the peace of North-East Asia with you here. But first, I would like to say thanks to the organizer for arranging the talk for me. The peace of northeast Asia, in my opinion, is decided and will be decided by the stability of Sino-America relationship, this is the center of this issue, while cross Taiwan straits relationship and North Korea nuclear issue are the two emphases, which are high relevant to the Sino-America relation and need both sides to treat strategically. As for the relationship between China and the United States, the most important aspect should be the rapid growth of Chinese economy since its opening-up and reform, which is labeled the rising of china. Its apparent that the high GDP growth rates have caused fear in Western world since middle of 1990s, and this should be the reason why china threat theory has been rampant since then before the real threat is coming. But what I will say here today, maybe contrary to most of you here, is that even though the rising of china is leading to some kind of power restructure in Northeast Asia, the regional order still has the high opportunity to keep stability and the peace in this region still can be hoped in the near and middle future.North-East Asia, Power Structure, Stability, China, The United States
Beyond Fermi pseudopotential: a modified GP equation
We present an effective potential and the corresponding modified
Gross-Pitaevskii equation that account for the energy dependence of the
two-body scattering amplitude through an effective-range expansion. For the
ground state energy of a trapped condensate, the theory leads to what we call a
shape-dependent confinement correction that improves agreements with diffusion
Monte Carlo calculations. The theory illustrates, for relatively strong
confinement and/or high density, how the shape dependence on atom-atom
interaction can come into play in a many-atom quantum system.Comment: 8 pages, 5 figure
Stability of Self-Assembling Drug Amphiphiles in Biological Environments
The search of understanding the interaction of self-assembling nanostructures with proteins in biological environments is leading to the rapid development of key applications, including improved drug delivery systems with long retention time, and the reduced of nonspecific protein adsorbance of nanoparticles with tuned surface charges. In this work, the self-assembly and the behavior of drug amphiphiles with different charges in the presence of proteins were studied. These prodrug molecules of different surface chemistries are able to assemble into tubular nanostructures in aqueous solution with a similar range of critical micelle concentration(CMC). Among all these drug amphiphiles, non-ionic peptide-drug conjugates exhibit the strongest stability in FBS and human serum while cationic molecules immediately precipitated out in biological environments and other charged nanostructures showed unobvious degradation after two weeks in the presence of protein. We believe these findings build foundation to further study rational design of supramolecular drug amphiphiles for therapeutic issues
FPC: A New Approach to Firewall Policies Compression
Firewalls are crucial elements that enhance network security by examining the field values of every packet and deciding whether to accept or discard a packet according to the firewall policies. With the development of networks, the number of rules in firewalls has rapidly increased, consequently degrading network performance. In addition, because most real-life firewalls have been plagued with policy conflicts, malicious traffics can be allowed or legitimate traffics can be blocked. Moreover, because of the complexity of the firewall policies, it is very important to reduce the number of rules in a firewall while keeping the rule semantics unchanged and the target firewall rules conflict-free. In this study, we make three major contributions. First, we present a new approach in which a geometric model, multidimensional rectilinear polygon, is constructed for the firewall rules compression problem. Second, we propose a new scheme, Firewall Policies Compression (FPC), to compress the multidimensional firewall rules based on this geometric model. Third, we conducted extensive experiments to evaluate the performance of the proposed method. The experimental results demonstrate that the FPC method outperforms the existing approaches, in terms of compression ratio and efficiency while maintaining conflict-free firewall rules
FPC: A New Approach to Firewall Policies Compression
Firewalls are crucial elements that enhance network security by examining the field values of every packet and deciding whether to accept or discard a packet according to the firewall policies. With the development of networks, the number of rules in firewalls has rapidly increased, consequently degrading network performance. In addition, because most real-life firewalls have been plagued with policy conflicts, malicious traffics can be allowed or legitimate traffics can be blocked. Moreover, because of the complexity of the firewall policies, it is very important to reduce the number of rules in a firewall while keeping the rule semantics unchanged and the target firewall rules conflict-free. In this study, we make three major contributions. First, we present a new approach in which a geometric model, multidimensional rectilinear polygon, is constructed for the firewall rules compression problem. Second, we propose a new scheme, Firewall Policies Compression (FPC), to compress the multidimensional firewall rules based on this geometric model. Third, we conducted extensive experiments to evaluate the performance of the proposed method. The experimental results demonstrate that the FPC method outperforms the existing approaches, in terms of compression ratio and efficiency while maintaining conflict-free firewall rules
Exact solutions of an SO(5)-invariant spin-3/2 Fermi gas model
An exactly solvable model describing the dilute spin-3/2 fermion gas in
one-dimensional optical trap is proposed. The diagonalization of the model
Hamiltonian is derived by means of the Bethe ansatz method. Exotic spin
excitations such as the heavy spinon with fractional spin 3/2, the neutral
spinon with spin zero and the dressed spinon with spin 1/2 are found based on
the exact solution.Comment: 4 pages, 3 figures, Added reference
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