We present a study of planet-crossing asteroid (3200) Phaethon at three successive perihelia in 2009, 2010, and 2012, using the NASA STEREO spacecraft. Phaethon is clearly detected in 2009 and 2012, but not in 2010. In both former years, Phaethon brightened unexpectedly by ∼1 mag at large phase angles, inconsistent with the ∼1 mag of steady fading expected from a discrete, macroscopic body over...

A problem of considerable theoretical interest in digital watermarking is that of asymmetric, or zero-knowledge watermarking. In this problem, we wish to embed a watermark in a piece of multimedia and later prove that we have done so, but without revealing information that can be used by an adversary to remove the signal later. In this paper we develop a watermarking system based on the ambigui...

The multi-mycotoxin occurrence for internal and superficial fungi contamination were comprehensively assessed in medicinal seeds used as food or beverage. Based on a polyphasic approach using morphological characters, β-tubulin and ITS gene blast, a total of 27 species belonging to 12 genera were identified from surface-sterilized seeds. Chaetomium globosporum was most predominant (23%), follow...

Pengolahan kulit kelapa menjadi media tanam adalah usaha untuk meningkatkan nilai jual itu sendiri. Untuk membuat dibutuhkan mesin pencacah agar dapat menghancurkan tersebut lebih halus dan efektif dalam penggunaannya. Dalam proses pencacahan, jumlah mata pisau mempunyai peranan yang sangat penting. Mesin digunakan variasi sebanyak 12, 15, 18. Serta daya motor penggerak sebesar 5,5 Hp putaran 3...

background: visceral leishmaniasis (vl) or kala-azar is a parasitic disease caused by the species of leishmania donovani complex. mediterranean type of the disease is endemic in some parts of iran and more than 95% of cases were reported in children up to 12 years of age. this study was performed to determine the seroprevalence of vl in the rural areas of dashti district from bushehr province. ...

Received March 31, 1999; revised June 16 & July 27, 1999; accepted September 20, 1999. Communicated by Shang-Rong Tsai. *This work was supported in part by the NSC of the ROC under Grant No. NSC87-2213-E-009-023. A preliminary version of this paper, entitled “IPLS: An Intelligent Parallel Loop Scheduling for Multiprocessor Systems,” appeared in Proceedings of the 1998 International Conference o...