Results 121 to 130 of about 7,945,193 (294)

Complex Parameter Rao and Wald Tests for Assessing the Bandedness of a Complex-Valued Covariance Matrix

open access: yesSignals
Banding the inverse of a covariance matrix has become a popular technique for estimating a covariance matrix from a limited number of samples. It is of interest to provide criteria to determine if a matrix is bandable, as well as to test the bandedness ...
Zhenghan Zhu
doaj   +1 more source

Generalised Wald Type Test of Nonlinear Restrictions

open access: yesOALib, 2005
Abstract This paper proposes a generalised Wald type tests to test the hypothesis of nonlinear restrictions. We circumvent the problem of singularity of the covariance matrix associated with the usual Wald test by proposing a generalised inverse procedure, and an alternative simple procedure which can be approximated by a suitable chi-square ...
openaire   +1 more source

Was tragen Wald und Holz zum Klimaschutz in Deutschland bei? [PDF]

open access: yes, 2016
Der Wald in Deutschland und seine nachhaltige Bewirtschaftung entlasten die Atmosphäre jährlich um 126 Mio. t CO2. Damit mindern der Wald, seine nachhaltige Bewirtschaftung und die Verwendung von Holzprodukten die deutschen Treibhausgas-Emission derzeit ...
Rüter, Sebastian   +3 more
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test

open access: yes, 2023
testtes
test, test
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Steps Toward Vitrification and Banking of Coral Larvae Using Field‐Friendly Cryomesh Technology

open access: yesAdvanced Science, EarlyView.
Cryomesh enables a low‐tech cryopreservation method, adding a valuable option to the coral reef conservation toolkit. The approach reveals how size, toxicity, and developmental stage govern larval survival, while modeling links cooling and rewarming rates to a theoretical upper volume limit.
E. Michael Henley   +15 more
wiley   +1 more source

A CT Lesion Foundation Model for Non‐Invasive Assessment of Hepatocellular Carcinoma Aggressiveness and Prediction of Recurrence Risk

open access: yesAdvanced Science, EarlyView.
A computed tomography lesion foundation model, built by sequential self‐supervised pretraining on generic and hepatocellular carcinoma‐specific lesion images, non‐invasively assesses microvascular invasion and pathological grade from contrast‐enhanced CT and stratifies postoperative recurrence risk.
Wei Xia   +9 more
wiley   +1 more source

Consumer Preferences for Craft Beer: The Interplay of Localness and Advertising Language

open access: yesAgribusiness, EarlyView.
ABSTRACT This study explores the influence of the language of the label, origin of production, and origin of brewing ingredients on Croatian consumers' preferences and willingness to pay for organic craft beer. Employing an online survey and a choice experiment among 223 Croatian alcohol consumers, we find that while there's a willingness to pay a ...
Marija Cerjak   +2 more
wiley   +1 more source

Does a Specialized Niche Market Vegetable Processor Enjoy Bargaining Power?

open access: yesAgribusiness, EarlyView.
ABSTRACT Agribusiness companies may achieve competitive advantage through specialization within niche markets. One such niche is the fresh‐cut fruit and vegetable market, which has been steadily growing in Germany. This study examines whether the specialization of a German fresh‐cut producer grants it with market power within this niche market.
Nikolas Bublik   +3 more
wiley   +1 more source

Adaptive Detection of Range-distributed Targets in Weighted Generalized Inverse Gaussian Clutter

open access: yesLeida xuebao
In this paper, we investigate the adaptive detection of range-distributed targets in compound-Gaussian clutter, where the texture component follows a Weighted Generalized Inverse Gaussian (WGIG) distribution.
Zhenyu XU   +6 more
doaj   +1 more source

Perhitungan Test Run Wald - Woldfowitz Menggunakan Java Mobile [PDF]

open access: yes, 2012
Saat ini, Perkembangan teknologi telah membuat semua informasi menjadi suatu hal yang sangat penting dalam berbagai bidang. Salah satunya adalah Teknik Ilmu Statistik yang selalu mencantum Nilai Tabel dalam proses perhitungannya.
ENGGAR, PRAMONO ARFIANTO
core  

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