985 research outputs found
History in today\u27s business school
Members of the American Assembly of Collegiate Schools of Business were surveyed to determine to what extent the history of various business school subjects (accounting, economics, management, etc.) was a part of today\u27s curricula. Findings indicated widespread teaching of history and the feeling that more should be done. However, the findings also indicate that much of the current teaching is not being done in separate courses by professional historians or even those interested in history. Implications for curricula development are discussed
Accounting history in today\u27s business schools
Slocum and Sriram\u27s [2001] study of teaching accounting history found a decline from 1985-1997 in the number of courses with historical content at the doctoral and undergraduate level. Is this development a singular event for accounting or an example of what is happening in other business disciplines? Our study presents the results of a longitudinal and cross-disciplinary survey of members of AACSB International to determine the current state of the teaching of history in business schools. We find a similar decline in other business disciplines and offer suggestions about the relevance of history and steps that might be taken to encourage its study
C. Bertrand Thompson and Management Consulting in Europe
This paper aims to highlight myriad accomplishments of C. Bertrand Thompson, who is perhaps most well known as a scientific-management bibliographer and a Taylor disciple, in the belief that his contributions as a pioneer management theorist and consultant in Europe deserve to be more widely known and more deeply appreciated
Quantitative effects of soil salinity on the symbiosis of wild lima bean (Phaseolus lunatus L.) and Bradyrhizobium in Costa Rica
Global climate change and local anthropogenic activities are increasing soil salinization with permanent negative effects on agricultural and ecosystem productivity. While salt stress is known to affect plant performance, its effects on the association with key microbial plant symbionts, such as legume-associated nitrogen-fixing rhizobia, are less understood. In this field study conducted in Costa Rica (Puntarenas), we used sympatrically-occurring wild lima bean (Phaseolus lunatus L.) and Bradyrhizobium to quantify biomass production of unfertilized rhizobial (R+) and fertilized rhizobia-free (R-) plants at different levels of experimentally manipulated salinity in native soil. In response to salt stress, nodulation was significantly reduced even at slightly increased salt levels. Plants growing at soil salinity levels of 2, 4, 6, and 8 mS/cm showed a mean reduction of nodules by 60.22, 76.52, 83.98, and 92.5% compared to the controls. Similarly, we also observed a significant decline in plant biomass at elevated salinity. However, biomass accumulation of R- plants was significantly less impacted compared to R+ plants, suggesting that the plant-microbe symbiosis is more salt-sensitive than the plant host itself. We suggest that the search for more salt-tolerant, crop plant-compatible rhizobial strains may provide a sustainable approach to maintain agricultural productivity on low to moderately saline soils
Elevated AKR1C3 expression promotes prostate cancer cell survival and prostate cell-mediated endothelial cell tube formation: implications for prostate cancer progressioan
<p>Abstract</p> <p>Background</p> <p>Aldo-keto reductase (AKR) 1C family member 3 (AKR1C3), one of four identified human AKR1C enzymes, catalyzes steroid, prostaglandin, and xenobiotic metabolism. In the prostate, AKR1C3 is up-regulated in localized and advanced prostate adenocarcinoma, and is associated with prostate cancer (PCa) aggressiveness. Here we propose a novel pathological function of AKR1C3 in tumor angiogenesis and its potential role in promoting PCa progression.</p> <p>Methods</p> <p>To recapitulate elevated AKR1C3 expression in cancerous prostate, the human PCa PC-3 cell line was stably transfected with an AKR1C3 expression construct to establish PC3-AKR1C3 transfectants. Microarray and bioinformatics analysis were performed to identify AKR1C3-mediated pathways of activation and their potential biological consequences in PC-3 cells. Western blot analysis, reverse transcription-polymerase chain reaction (RT-PCR), enzyme-linked immunosorbent assay (ELISA), and an <it>in vitro </it>Matrigel angiogenesis assays were applied to validate the pro-angiogenic activity of PC3-AKR1C3 transfectants identified by bioinformatics analysis.</p> <p>Results</p> <p>Microarray and bioinformatics analysis suggested that overexpression of AKR1C3 in PC-3 cells modulates estrogen and androgen metabolism, activates insulin-like growth factor (IGF)-1 and Akt signaling pathways, as well as promotes tumor angiogenesis and aggressiveness. Levels of IGF-1 receptor (IGF-1R) and Akt activation as well as vascular endothelial growth factor (VEGF) expression and secretion were significantly elevated in PC3-AKR1C3 transfectants in comparison to PC3-mock transfectants. PC3-AKR1C3 transfectants also promoted endothelial cell (EC) tube formation on Matrigel as compared to the AKR1C3-negative parental PC-3 cells and PC3-mock transfectants. Pre-treatment of PC3-AKR1C3 transfectants with a selective IGF-1R kinase inhibitor (AG1024) or a non-selective phosphoinositide 3-kinases (PI3K) inhibitor (LY294002) abolished ability of the cells to promote EC tube formation.</p> <p>Conclusions</p> <p>Bioinformatics analysis followed by functional genomics demonstrated that AKR1C3 overexpression promotes angiogenesis and aggressiveness of PC-3 cells. These results also suggest that AKR1C3-mediated tumor angiogenesis is regulated by estrogen and androgen metabolism with subsequent IGF-1R and Akt activation followed by VEGF expression in PCa cells.</p
The Theory/Applications Balance in Management Pedagogy: Where Do We Stand?
Business schools are expected to be "professional" in the sense that their mission is primarily to prepare people to practice their skills in the business world. Various critics, however, claim that management professors overemphasize theory and research and neglect the practice and applications students need to transfer classroom theory to the world of practice. This study compared an earlier sample with a more recent sample of Academy of Management members concerning the relative emphasis they believed should be placed on theory and applications in management pedagogy and the techniques they used to bring applications into the classroom. Current respondents believed that more emphasis should be placed on applications than the earlier respondents. An unexpected finding, however, was that the more recent respondents reported a lower mean usage of pedagogical techniques that are appropriate for developing students' ability to apply course concepts than the previous group. Possible reasons for these incongruent findings are discussed as well as the implications for management pedagogy.Yeshttps://us.sagepub.com/en-us/nam/manuscript-submission-guideline
SDSS J124602.54+011318.8: A Highly Luminous Optical Transient at z=0.385
We report the discovery of a highly luminous optical transient (OT), SDSS
J124602.54+011318.8, associated with a galaxy at a redshift of 0.385. In this
paper we consider the possibility that the OT may be a GRB afterglow. Three
sets of images and two sets of spectra were obtained as part of the normal
operations of the Sloan Digital Sky Survey (SDSS). In the first two image sets,
observed two nights apart, the object appears as a point source at
. The third image set, observed about 410 days later, shows an
extended source which is more than 2.5 magnitudes fainter. The spectra were
observed about 400 and 670 days after the first two image sets, and both show
an apparently normal galaxy at a redshift of 0.385. Associating the OT with the
galaxy, the absolute magnitude was , which is over 4 magnitudes
brighter than the most luminous supernova ever measured. The spectral energy
distributions of the galaxy-subtracted OT derived from the first two image sets
are well-fit by single power-laws with indices of and -1.29
respectively, similar to most GRB afterglows. Based upon the luminosity of the
OT, non-detections in contemporaneous ROTSE-I images, and the change in
spectral slope, the OT, if an afterglow, was likely discovered early during a
``plateau'' or slowly-fading phase. The discovery of a GRB afterglow at this
stage of the SDSS is consistent with expectations, but only if the optical
emission is much less strongly beamed than the gamma-rays. We emphasize that
other explanations for the OT cannot be ruled out; a recent follow-up study by
[galyam02] provides strong evidence that this source is in fact an unusual AGN.Comment: Updated version to appear in Ap
GRB Afterglows and Other Transients in the SDSS
The Sloan Digital Sky Survey (SDSS) will image one quarter of the sky centered on the northern galactic cap and produce a 3‐D map of galaxies and quasars found in the sample. An additional 225 deg2 southern survey will be imaged repeatedly on varying timescales. Here we discuss both archival searches in the SDSS catalog (such as SDSS J24602.54+011318.8) and active searches with the SDSS instruments (such as for GRB 010222) for GRB afterglows and other transient objects. © 2003 American Institute of PhysicsPeer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/87288/2/349_1.pd
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