نتایج جستجو برای: collection procedures
تعداد نتایج: 437583 فیلتر نتایج به سال:
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 ...
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...
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 ...
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...
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...
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...
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.
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.
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...
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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