1,944 research outputs found
The importance of ‘goodness of fit’ between organizational culture and climate in the management of change: a case study in the development of online learning
This paper explores the nexus between organizational culture and organizational climate in the management of change by presenting a case study wherein an Australian regional university is currently undertaking the development of online courses. Important consideration is given to the complementary roles of culture and climate in managing organizational change. The single most important determinant of success is strong, committed senior management whose task is to articulate the organization's new vision and the manner in which it reshapes the organization's culture. At another level the climate of the organization as reflected in the systems that facilitate people's work (including policies, procedures, rewards and communication) must mesh with the new culture if organizational change is to proceed smoothly. This paper discusses the interactive nature of these two powerful organizational variables. The case study draws on the experiences of a school of academics acting as developers and deliverers of online initiatives and a number of concerns are raised that threaten the goodness of fit between the culture and climate of the organization. Policy issues requisite to the successful delivery of online courses are identified and discussed. The most contentious issue revolves around the question of ownership. Many academics, accustomed to exercising autonomy with respect to determining appropriate learning strategies, openly resisted the role the Information Technology department of the university assumed in making decisions that are often seen as having pedagogical overtones. To the extent that transactional issues such as these detract from the climate of the organization, they prevent academics from performing to their full potential. It is concluded that the climate of the organization, if properly managed, contributes to an enduring organizational culture which in turn is better able to deal with the inevitability of change and face the challenges that initiatives such as online education bring
Armor
I never played sports. It never felt right or good. Sports created a space in which my body would be on display. A display which invited attention to a performance of masculinity. And under that scrutiny, I would fail. Fail to perform with the strength I was expected to exhibit.
Removed from the pressure of performance, I can consider the equipment, the gear, the spaces and re-materialize them. I shift what is on display. Displaying the altered objects rather than the body and its performance. Looking at the objects not as tools for the body to interact with but as pieces that perform on their own.
Game and combat. Play and fight.
In my own private game I wrestle with myself.
Playing internal defense and offense,
back and forth of doubt.
The mind plays tricks, the tricks play me
Mobile work platform for initial lunar base construction
Described is a system of equipment intended for site preparation and construction of a lunar base. The proximate era of lunar exploration and the initial phase of outpost habitation are addressed. Drilling, leveling, trenching, and cargo handling are within the scope of the system's capabilities. The centerpiece is a three-legged mobile work platform, named SKITTER. Using standard interfaces, the system is modular in nature and analogous to the farmer's tractor and implement set. Conceptually somewhat different from their Earthbound counterparts, the implements are designed to take advantage of the lunar environment as well as the capabilities of the work platform. The proposed system is mechanically simple and weight efficient
Making Accident Statistics More Meaningful
With the improvement in driver licensing and highway policing systems throughout the country there has arisen the need for better reporting and analysis of accidents and accident trends. Many states have inaugurated standard IBM equipment and follow a more or less uniform system of recording and punching accident data on cards for machine analysis. In most respects the trends in this development have been very desirable but standardization is sometimes a virtue which may occasionally boomerang. After a system is once established it takes a great deal of effort to make a change and changes are frequently desirable. Standardization may thus become a hindrance to progress. In other areas this may be readily illustrated by the English and American system of mensuration as well as by our clumsy 12-month calendar. However, the purpose of this paper is not to propose a new system, but to add some needed extensions and improvements which make any system now in common usage much more effective. An illustration using actual data will be set forth to illustrate one type of problem in the field of accident prevention
Report of the direct infrared sensors panel
The direct infrared sensors panel considered a wide range of options for technologies relevant to the science goals of the Astrotech 21 mission set. Among the technologies assessed are: large format arrays; photon counting detectors; higher temperature 1 to 10 micro-m arrays; impurity band conduction (IBC) or blocked impurity band (BIB) detectors; readout electronics; and adapting the Space Infrared Telescope Facility and Hubble Space Telescope. Detailed development plans were presented for each of these technology areas
Mitochondrial dysfunction leads to nuclear genome instability: A link through iron-sulfur clusters
Mutations and deletions in the mitochondrial genome (mtDNA), as well as
instability of the nuclear genome, are involved in multiple human diseases. Here we
report that in Saccharomyces cerevisiae, loss of mtDNA leads to nuclear genome
instability, through a process of cell cycle arrest and selection we define as a cellular
crisis. This crisis is not mediated by the absence of respiration, but instead correlates with
a reduction in the mitochondrial membrane potential. Analysis of cells undergoing this
crisis identified a defect in iron-sulfur cluster (ISC) biogenesis, which requires normal
mitochondrial function. We found that down-regulation of non-mitochondrial ISC protein
biogenesis was sufficient to cause increased genomic instability in cells with intact
mitochondrial function. These results suggest mitochondrial dysfunction stimulates
nuclear genome instability by inhibiting the production of ISC-containing protein(s),
which are required for maintenance of nuclear genome integrity
Methodology of a reevaluation of cardiovascular outcomes in the RECORD trial: study design and conduct
Background
In 2010, after regulatory review of rosiglitazone licensing, the US Food and Drug Administration (FDA) requested a reevaluation of cardiovascular end points in the RECORD trial.<p></p>
Methods
Automated screening of the original clinical trial database and manual case report form review were performed to identify all potential cardiovascular and noncardiovascular deaths, and nonfatal myocardial infarction (MI) and stroke events. Search techniques were used to find participants lost to follow-up, and sites were queried for additional source documents. Suspected events underwent blinded adjudication using both original RECORD end point definitions and new FDA end point definitions, before analysis by the Duke Clinical Research Institute.<p></p>
Results
The reevaluation effort included an additional 328 person-years of follow-up. Automated screening identified 396 suspected deaths, 2,052 suspected MIs, and 468 suspected strokes. Manual review of documents by Duke Clinical Research Institute clinical events classification (CEC) coordinators identified an additional 31 suspected deaths, 49 suspected MIs, and 28 suspected strokes. There were 127 CEC queries issued requesting additional information on suspected deaths; 43 were closed with no site response, 61 were closed with a response that no additional data were available, and additional data were received for 23. Seventy CEC queries were issued requesting additional information for suspected MI and stroke events; 31 were closed with no site response, 20 were closed with a response that no additional data were available, and 19 resulted in additional data.<p></p>
Conclusions
Comprehensive procedures were used for rigorous event reascertainment and readjudication in a previously completed open-label, global clinical trial. These procedures used in this unique situation were consistent with other common approaches in the field, were enhanced to address the FDA concerns about the original RECORD trial results, and could be considered by clinical trialists designing event readjudication protocols for drug development programs that have been completed.<p></p>
Results of a reevaluation of cardiovascular outcomes in the RECORD trial
Background
The US Food and Drug Administration (FDA) required a reevaluation of cardiovascular (CV) outcomes in the RECORD trial. This provided an opportunity to assess the implications of event adjudication by 2 groups and quantify the differences as well as to use new FDA end point definitions in development.<p></p>
Methods
Original data were used to systematically identify all potential deaths, myocardial infarctions (MIs), and strokes. Site investigators were approached for additional source documents and information about participants lost to follow-up. Suspected events were adjudicated using standard procedures, and the results were compared with the original trial outcomes.<p></p>
Results
Follow-up for mortality was 25,833 person-years, including an additional 328 person-years identified during the reevaluation effort. A total of 184 CV or unknown-cause deaths (88 rosiglitazone, 96 metformin/sulfonylurea), 128 participants with an MI (68 rosiglitazone, 60 metformin/sulfonylurea), and 113 participants with a stroke (50 rosiglitazone, 63 metformin/sulfonylurea) were included. The hazard ratio (HR) for rosiglitazone versus metformin/sulfonylurea for the end point of CV (or unknown cause) death, MI, or stroke was 0.95 (95% CI 0.78-1.17) compared with 0.93 (95% CI 0.74-1.15) for the original RECORD results. Treatment comparisons for MI (HR 1.13, 95% CI 0.80-1.59) and mortality (HR 0.86, 95% CI 0.68-1.08) were also the same compared with the original RECORD results. Sensitivity analyses were also consistent with the original RECORD results. Analyses using the FDA definitions showed similar results.<p></p>
Conclusions
Only a modest number of additional person-years of follow-up were ascertained from this reevaluation of CV end points in RECORD. Observed HRs and CIs from these analyses using the original RECORD or new FDA end point definitions showed similar treatment effects of rosiglitazone compared with the original RECORD results.<p></p>
Early postpartum pup preference is altered by gestational cocaine treatment: Associations with infant cues and oxytocin expression in the MPOA
Cross-fostering studies suggest cocaine-induced deficits in maternal behavior could be associated with altered behavior of offspring following prenatal cocaine-exposure. Neonatal vocalizations are an important offspring cue facilitating early interactions between dam and rodent pup offspring and have been shown to be altered following prenatal cocaine-exposure. It is unclear how variations in acoustic parameters of USVs impact maternal behavior and the mechanism(s) underlying these processes. The present study examined differences in cocaine-exposed and control rodent dam maternal preference of cocaine-exposed or untreated pups in a dual choice apparatus. Relationship of preference-like behavior with pup USVs and dam oxytocin expression was explored. Gestational cocaine-exposure interfered with preference-like behavior of dams on postpartum day 1 with cocaine-exposure associated with decreased time spent on the cocaine-exposed pup side compared to the control pup side, and decreases in preference-like behavior associated in part with decreased number of USVs being emitted by cocaine-exposed pups. On postpartum day 5, decreased oxytocin expression in the medial preoptic area was associated with altered preference-like behavior in cocaine-exposed dams, including frequency and latency to touch/sniff pups. Results indicate cocaine’s effects on the mother-infant relationship is likely synergistic, in that cocaine influences mother and offspring both independently and concertedly and that variations within pup vocalizations and the oxytocin system may be potential mechanism(s) underlying this synergistic relationship during the postpartum period
Use of high resolution 3D diffusion tensor imaging to study brain white matter development in live neonatal rats
High resolution diffusion tensor imaging (DTI) can provide important information on brain development, yet it is challenging in live neonatal rats due to the small size of neonatal brain and motion-sensitive nature of DTI. Imaging in live neonatal rats has clear advantages over fixed brain scans, as longitudinal and functional studies would be feasible to understand neuro-developmental abnormalities. In this study, we developed imaging strategies that can be used to obtain high resolution 3D DTI images in live neonatal rats at postnatal day 5 (PND5) and PND14, using only 3 h of imaging acquisition time. An optimized 3D DTI pulse sequence and appropriate animal setup to minimize physiological motion artifacts are the keys to successful high resolution 3D DTI imaging. Thus, a 3D rapid acquisition relaxation enhancement DTI sequence with twin navigator echoes was implemented to accelerate imaging acquisition time and minimize motion artifacts. It has been suggested that neonatal mammals possess a unique ability to tolerate mild-to-moderate hypothermia and hypoxia without long term impact. Thus, we additionally utilized this ability to minimize motion artifacts in magnetic resonance images by carefully suppressing the respiratory rate to around 15/min for PND5 and 30/min for PND14 using mild-to-moderate hypothermia. These imaging strategies have been successfully implemented to study how the effect of cocaine exposure in dams might affect brain development in their rat pups. Image quality resulting from this in vivo DTI study was comparable to ex vivo scans. fractional anisotropy values were also similar between the live and fixed brain scans. The capability of acquiring high quality in vivo DTI imaging offers a valuable opportunity to study many neurological disorders in brain development in an authentic living environment
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