Results 111 to 120 of about 492,455 (357)

Monte Carlo experiments on the effect of serial correlation on the Mann-Kendall test of trend

open access: yesMeteorologische Zeitschrift, 1995
Die Wirkung von zeitlicher (serieller) Korrelation in einer Zeitserie auf das Resultat eines Trendtests nach Mann-Kendall wird im Rahmen eines Simulationsexperiments untersucht.
Ashwini Kulkarni, Hans von Storch
doaj   +1 more source

The Decision of When to Buy a Frequently Purchased Good: A Multi-Period Probit Model

open access: yesJournal of Agricultural and Resource Economics, 2000
Increased availability of scanner-based panel data has enabled researchers to better understand nondurable commodity purchase dynamics. In this study, we focus on one component of the purchase process--when to buy.
Brian W. Gould, Diansheng Dong
doaj   +1 more source

Optimal periodic binary codes of lengths 28 to 64 [PDF]

open access: yes
Results from computer searches performed to find repeated binary phase coded waveforms with optimal periodic autocorrelation functions are discussed. The best results for lengths 28 to 64 are given.
Keston, R., Tyler, S.
core   +1 more source

Imperfection in Semiconductors Leading to High Performance Devices

open access: yesAdvanced Science, EarlyView.
Crystalline perfection is typically pursued in semiconductors to enhance device performance. However, through modeling and experimental work, we show that defects can be strategically employed in a specific detection regime to increase sensitivity to extreme values. GaN diodes are demonstrated to effectively detect high‐energy proton beams at fluxes as
Jean‐Yves Duboz   +8 more
wiley   +1 more source

The Interplay of Magnetic Order with the Electronic Scattering and Crystal‐Field Effects in a Metallic Ferromagnet

open access: yesAdvanced Science, EarlyView.
The interplay between magnetic ordering and crystal electric field (CEF) excitations plays a pivotal role in defining the low‐energy electrodynamics of quantum materials. By probing the temperature‐dependent THz conductivity in a rare‐earth‐based metallic ferromagnet, we uncover a microscopic connection between localized and itinerant electrons ...
Payel Shee   +11 more
wiley   +1 more source

Balanced optimal almost binary sequence pairs of period N≡1(mod4)

open access: yesTongxin xuebao, 2021
Based on the combinatorial design theory, the constructions of balanced optimal almost binary sequence pairs of period N≡1(mod 4)were researched.The maximal cross-correlation values θc were obtained by different combinations of (almost) binary sequence ...
Xiuping PENG   +3 more
doaj  

Single‐Cell Mitochondrial Lineage Tracing Decodes Fate Decision and Spatial Clonal Architecture in Human Hematopoietic Organoids

open access: yesAdvanced Science, EarlyView.
This study repurposes mitochondrial DNA mutations as endogenous barcodes for lineage tracing in human pluripotent stem cell‐derived organoids. Integrated with transcriptomic and spatial data, it reveals NOTCH‐mediated stromal‐progenitor crosstalk orchestrates clonal dynamics and spatial zonation during early hematopoietic development, offering a non ...
Yan Xue   +17 more
wiley   +1 more source

HACking at Non-linearity: Evidence from Stocks and Bonds [PDF]

open access: yes
The implicit assumption of linearity is an important element in empirical finance. This study presents a hypothesis testing approach which examines the linear behaviour of the conditional mean between stock and bond returns.
Adam E Clements   +2 more
core  

Single‐Cell Profiling: Any Scale, Any Size, All at Once

open access: yesAdvanced Science, EarlyView.
Traditional single‐cell technologies are constrained by cellular dimension and throughput scale, in addition to its inability preserve spatial information. With recent innovations, these technologies now allow high throughput, large‐sized cell, and multi‐modal profiling of patient samples, overcoming these limitations.
Denise Goh   +4 more
wiley   +1 more source

Polycentrisme urbain : une réalité spatialement mesurable ?

open access: yesCybergeo, 2004
It has already widely been shown that the extension of the urban space takes a polycentric shape: suburban employment sub-centres emerge. The objective in this study is to measure employment concentrations inside and around urban agglomerations and to ...
Marc Servais   +3 more
doaj   +1 more source

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