Earlier reports suggested that injecting normal optic nerve into organotypic cerebellar cultures from three of the central nervous system hypomyelinated mutant mice resulted in striking local increases in myelination of mutant axons. It has been questioned whether this myelin was produced by the introduced normal glia because there was no "marker" by which the genotype of an individual myelin s...

The current model of gibberellin (GA) signal transduction is based on a derepressible system and a number of candidate negative regulators have been identified in Arabidopsis. We previously have reported the identification of the Arabidopsis gene SHORT INTERNODES (SHI) that causes suppression of GA responses when constitutively activated. In this paper, we show by using reporter gene analysis t...

Manuscript received May 28, 1999. † The authors are with Communications Research Laboratory, Koganei-shi, 184-8795 Japan. †† The authors are with NTT Multimedia Networks Laboratories, Musashino-shi, 180-8585 Japan. ††† The author is with NTT Advanced Technology Corporation, Yokohama-shi, 244-0801 Japan. †††† The authors are with National Astronomical Observatory, Mitaka-shi, 181-8588 Japan. ‡‡†...

This paper is about two arrangements of hyperplanes. The first — the Shi arrangement — was introduced by Jian-Yi Shi to describe the Kazhdan-Lusztig cells in the affine Weyl group of type A. The second — the Ish arrangement — was recently defined by the first author who used the two arrangements together to give a new interpretation of the q, t-Catalan numbers of Garsia and Haiman. In the prese...

Purpose The objective of this paper is twofold. First, to study the safe-haven characteristic Islamic stock indexes and Ṣukūk during crises time. Second, evaluate property in last pandemic. This employs daily dataset from June 15, 2015, 2020, for most affected countries by earlier disease. Design/methodology/approach uses Markov-switching Capital Asset Pricing Model (CAPM) approach basic CAPM m...

The hierarchy of classical Chinese poetry has been broadly acknowledged by a number of studies in Chinese literature. However, quantitative investigations about the evolution of classical Chinese poetry are limited. The primary goal of this study is to provide quantitative evidence of the evolutionary linkages, with emphasis on word usage, among different period genres for classical Chinese poe...

As low-income countries are initiating health insurance schemes, Ethiopia is also planning to move away from out-of-pocket private payments to health insurance. The success of such a policy depends on understanding and predicting preferences of potential enrolees. This is because a scarce health care budget forces providers and consumers to make trade-offs between potential benefits within a he...

Richard Stanley suggested the problem of finding the characteristic polynomial of a certain hyperplane arrangement defined by xi + xj = 0, 1, which is called the Shi threshold arrangement. We present the answer of the problem, using the finite field method.