Negative Results and Impact Factor

Results from a Web Impact Factor crawler.PDF

Web Impact Factors, the proposed web equivalent of Impact Factors for journals, can be calculated by using search engines. It has been found that the results are problematic because of the variable coverage of search engines as well as their ability to give significantly different results over short periods of time. The fundamental problem is that although some search engines provide a function...

Comparison of the Initial Treatment Results of N-myc Positive and N-myc Negative Neuroblastoma Patients

Background: Neuroblastoma is the most common extra cranial malignant solid tumor of childhood. Various molecular and cytogenetic factors have been implicated in the pathogenesis of neuroblastoma, some of which have proven useful in predicting clinical behavior. Over expression of the oncogen N-myc, is an important indicator of prognosis. Materials and Methods: Our study was performed from 20...

The uncertain position, status and impact of negative results in marine ecology: philosophical and practical considerations

MEPS Theme Sections (previously referred to as Comment Sections) represent integrated expert analyses highlighting an important, cutting-edge topic. Theme Sections (TS) are organized by a Contributing Editor (e.g. Browman 1995, 1996). The present TS addresses a topic which has been discussed, condemned or defended by authors and editors for decades: negative results of research efforts. A rejec...

Negative Results on Learning

Efficiency and Impact of Positive and Negative Magnetic Separation on Monocyte Derived Dendritic Cell Generation

Background: The immunomagnetic separation technique is the basis of monocyte isolation and further generation of monocyte-derived dendritic cells. Objective: To compare the efficiency of monocyte positive and negative separation, concentration of beads, and their impact on generated dendritic cells. Methods: Monocytes were obtained using monoclonal antibody-coated magnetic beads followed the Fi...