نتایج جستجو برای: collection procedures

تعداد نتایج: 437583  

2007
Pedro Delicado P. Delicado

This paper deals with the k-sample problem for functional data when the observations are density functions. We introduce test procedures based on distances betweenpairs of density functions (L1 distance andHellinger distance, amongothers).A simulation study is carried out to compare the practical behaviour of the proposed tests. Theoretical derivations have been done in order to allow weighted ...

Journal: :Annual review of biomedical engineering 2010
Bradley J Nelson Ioannis K Kaliakatsos Jake J Abbott

Microrobots have the potential to revolutionize many aspects of medicine. These untethered, wirelessly controlled and powered devices will make existing therapeutic and diagnostic procedures less invasive and will enable new procedures never before possible. The aim of this review is threefold: first, to provide a comprehensive survey of the technological state of the art in medical microrobots...

2008
Christina Romer

This paper shows that the stabilization of the unemployment rate-between the pre-1930 and post-1948 eras is an artifact of improvements in data collection procedures. Prewar methods are used to construct postwar unemployment data that are consistent with the historical data. The constructed postwar series is nearly as volatile as the pre-1930 unemployment data. The constructed postwar data are ...

2001
KEIZO NAGASAKI

Despite the recent interest in viruses infecting eucaryotic marine microalgae, only 7 viruses infecting marine phytoplankton have been isolated so far. It is therefore worth reviewing isolation techniques and rationalizing the method for obtaining novel microalgal viruses. I consider 7 steps as critical in the isolation procedure: (1) selection of the target host alga, (2) preparation of target...

Journal: :Talanta 2005
Paul J Worsfold Laura J Gimbert Utra Mankasingh Omaka Ndukaku Omaka Grady Hanrahan Paulo C F C Gardolinski Philip M Haygarth Benjamin L Turner Miranda J Keith-Roach Ian D McKelvie

Phosphorus is an important macronutrient and the accurate determination of phosphorus species in environmental matrices such as natural waters and soils is essential for understanding the biogeochemical cycling of the element, studying its role in ecosystem health and monitoring compliance with legislation. This paper provides a critical review of sample collection, storage and treatment proced...

2014
Hal Kendig Julie E Byles Kate O'Loughlin James Y Nazroo Gita Mishra Jack Noone Vanessa Loh Peta M Forder

OBJECTIVE Ideally, life course data are collected prospectively through an ongoing longitudinal study. We report adaptive multimethod fieldwork procedures that gathered life history data by mail survey and telephone interview, comparable with the face-to-face methods employed in the English Longitudinal Study on Ageing (ELSA). DESIGN The Australian Life Histories and Health (LHH) Survey was a...

2000
Peter Kueng Andreas Meier Thomas Wettstein

Performance measurement has been recognised as a crucial element to improve business performance. The aim of this paper is to show that IT is an enabler to create a multidimensional performance measurement system that is based on automated data collection procedures. Several measurement approaches are discussed and evaluated against the needs of SMEs.

Journal: :Oper. Res. Lett. 2000
Susan M. Sanchez Prabhudev Konana

Frequency domain experiments are efficient screening procedures for identifying important factors in simulation models. An empirical investigation involving a simple autoregressive system and a complex queueing system shows that allocating data unequally among signal and noise runs may be more effective when the data collection effort is limited.

2017
Fionn Coughlan Alexander Lam Stephen Honeybul

Pneumocephalus is defined as a collection of air within the cranial cavity. It is a common finding following head injury with skull base fracture and neurosurgical procedures. Tension pneumocephalus is a rare complication. The diagnosis is clinical and radiological with the characteristic Mount Fuji sign seen on computed tomography (CT). It is a neurosurgical emergency, and early recognition an...

Journal: :Cell stem cell 2010
Yuin-Han Loh Odelya Hartung Hu Li Chunguang Guo Julie M Sahalie Philip D Manos Achia Urbach Garrett C Heffner Marica Grskovic Francois Vigneault M William Lensch In-Hyun Park Suneet Agarwal George M Church James J Collins Stefan Irion George Q Daley

Supplemental Experimental Procedures Production of virus. Cell culture and human iPS cell induction. Donor blood cells collection and isolation. Immunohistochemistry staining. qRT–PCR. Global gene expression. Bisulfite genomic sequencing. DNA fingerprinting and karyotyping. Embryoid body formation. Hematopoietic colony-forming assays. Assay for teratoma formation. Flow cytometry. Southern Blot ...

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