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Recently Rothemund and Winfree [6] have considered the program size complexity of constructing squares by self-assembly. Here, we consider the time complexity of such constructions using a natural generalization of the Tile Assembly Model defined in [6]. In the generalized model, the Rothemund-Winfree construction of <italic>n \times n</italic> squares(More)
Self-assembly is the ubiquitous process by which simple objects autonomously assemble into intricate complexes. It has been suggested that intricate self-assembly processes will ultimately be used in circuit fabrication, nano-robotics, DNA computation, and amorphous computing. In this paper, we study two combinatorial optimization problems related to(More)
OBJECTIVES The purpose of this study was to assess trends in endothelial coverage and recovery among leading polymer-based drug-eluting stents (DES). BACKGROUND Autopsy studies of human U.S. Food and Drug Administration (FDA)-approved DES implanted coronary arteries suggest that complications of late stent thrombosis are associated with incomplete(More)
A distributed detection and decision fusion scheme is proposed for a wireless sensor network (WSN) consisting of a large number of sensors. At the fusion center, the total number of detections reported by local sensors are employed for hypothesis testing. Based on the assumption that the received signal power decays as the distance from the target(More)
For generalized Reed-Solomon codes, it has been proved [6] that the problem of determining if a received word is a deep hole is co-NP-complete. The reduction relies on the fact that the evaluation set of the code can be exponential in the length of the code – a property that practical codes do not usually possess. In this paper, we first presented a much(More)
To discuss the application value of Baicalin which is a new drug by comparing the protecting effects of Baicalin and Octreotide on multiple organs (pancreas, liver, kidney, and lung) in Severe acute pancreatitis (SAP). The improved Aho method was adopted to prepare SAP rat models via retrograde injection of 3.5% sodium taurocholate to the pancreatic duct.(More)
Group B streptococci (GBS) are the leading cause of neonatal meningitis and sepsis worldwide. Intrapartum antibiotic prophylaxis (IAP) is the current prevention strategy given to pregnant women with confirmed vaginal GBS colonization. Due to antibiotic resistance identified in GBS, we previously developed another strategy using a bacteriophage lytic enzyme,(More)
Aquaporin-4 (AQP4) is the major water channel in the CNS and is primarily expressed in astrocytes. Little is known about the potential for AQP4 to influence synaptic plasticity, although many studies have shown that it regulates the response of the CNS to injury. Therefore, we evaluated long-term potentiation (LTP) and long-term depression (LTD) in AQP4(More)
To evaluate the Chinese version of the Parkinson's disease sleep scale (PDSS) as an instrument for measuring sleep disorders in Chinese patients with Parkinson's disease (PD). The objective of the present study was to carry out a metric analysis of a Chinese version of PDSS using a cross-sectional study of 126 patients with PD who participated in the study.(More)
  • Qi Cheng
  • IEEE Transactions on Information Theory
  • 2008
The minimum distance is one of the most important combinatorial characterizations of a code. The maximum-likelihood decoding problem is one of the most important algorithmic problems of a code. While these problems are known to be hard for general linear codes, the techniques used to prove their hardness often rely on the construction of artificial codes.(More)