1,493 research outputs found

    Is the project management field suffering from methodological inertia? Looking for evidence in publications in a recently established journal

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    Project management (PM) researchers have traditionally used quantitative methods in their research due to the origins of this practice-based discipline in defence and engineering. Although qualitative methods are starting to be used in PM research, most of the qualitative research reported tends to use case studies. Recently, there has been a call for PM researchers to use more novel methods to increase the variety of methods used by the researcher in the field contributing to its further development (Drouin, Muller and Sankaran 2013; Cameron, Sankaran and Scales 2015). A review of papers presented at the International Research Network on Organizing by Projects (IRNOP) conference in Berlin in 2009 showed a surprising trend that papers presented at these conferences used more qualitative methods in comparison with articles published in key PM journals. This paper analyses articles published over the past six years in a comparatively new PM journal, since its inception, to explore whether the new journal has motivated PM researchers to overcome their methodological inertia and broaden the variety of research methods they use. A mixed methods prevalence study was undertaken on articles published in the International Journal of Managing Projects in Business (IJMPiB) from 2008 to 2014 (n=265). The findings point to methodological inertia in the majority of research but also an unusually high proportion of the use of mixed methods. Future research is needed to add finer granularity to the analysis

    Modeling Organizational Project Management

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    © 2019 Project Management Institute, Inc. The contemporary discourse on organizational project management (OPM) complements project, program, and portfolio management with emerging elements, such as governance, projectification, the project management office (PMO), and organizational design. This creates the need for an integrated model that defines the content and roles in OPM. This article addresses this by conceptually developing a seven-layered model that organizes 22 OPM elements, ranging from the corporate level to the management of individual projects. A theory is developed to explain the interaction of the elements and the layers within the model

    The effect of cis- and trans-clomiphene citrate on sialic acid in the uterus, cervix and vagina of rats during delayed implantation

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    The comparative effects of cis- and trans-clomiphene and oestradiol-17β on the sialic acid concentration in the uterus, cervix and vagina were studied in rats during experimentally induced delayed implantation. The cis- or trans-isomer of clomiphene caused a progressive dose-dependent increase in sialic acid in the uterus and cervix whereas vaginal sialic acid decreased with increase in the dose of the respective compounds. Cis- and trans-clomiphene and oestradiol-17β all caused a sharp increase in the sialic acid content of the uterus, cervix and vagina 6 hr after the administration of the respective compounds. There was a decrease in sialic acid in all the three tissues at subsequent time intervals in cis-clomiphene or oestradiol-treated rats. The oestrogenic effects of trans-clomiphene lasted even up to 48 hr in all three reproductive tract tissues, indicating that trans-clomiphene is more oestrogenic than the cis-isomer. Differences in the response of the uterus, cervix and vagina to administration of the compounds are discussed in relation to their embryological origin

    Surface compositional variations of Mo-47Re alloy as a function of temperature

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    Molybdenum-rhenium alloys are candidate materials for the National Aero-Space Plane (NASP) as well as for other applications in generic hypersonics. These materials are expected to be subjected to high-temperature (above 1200 C) casual hydrogen (below 50 torr), which could potentially degrade the material strength. Since the uptake of hydrogen may be controlled by the contaminant surface barriers, a study of Mo-47Re was conducted to examine the variations in surface composition as a function of temperature from 25 C to 1000 C. Pure molybdenum and rhenium were also examined and the results compared with those for the alloy. The analytical techniques employed were Auger electron spectroscopy, electron energy loss spectroscopy, ion scattering spectroscopy, and x ray photoelectron spectroscopy. The native surface was rich in metallic oxides that disappeared at elevated temperatures. As the temperature increased, the carbon and oxygen disappeared by 800 C and the surface was subsequently populated by the segregation of silicon, presumably from the grain boundaries. The alloy readily chemisorbed oxygen, which disappeared with heating. The disappearance temperature progressively increased for successive dosings. When the alloy was exposed to 800 torr of hydrogen at 900 C for 1 hour, no hydrogen interaction was observed

    Changes in uterine sialic acid and glycogen during early pregnancy in the rat

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    Changes in uterine sialic acid and glycogen were studied in rats during days 1-6 of pregnancy. There was a sharp decline in uterine glycogen following mating, and thereafter increased gradually to reach a peak level on day 4 (4 PM). Coinciding with the entry of blastocysts into the uterus [between day 4 (10 PM) and day 5 (10 AM)] uterine glycogen decreased to a low level which was maintained up to 4 PM on day 6 of pregnancy. Uterine sialic acid was maximal on day 0 (proestrus, 10 PM) and was maintained at this level up to day 1 of pregnancy. Thereafter, uterine sialic acid concentration declined gradually to the lowest level by day 4 (9 AM). There was a sharp increase in uterine sialic acid between 4 and 10 PM On day 4, and was followed by a marked decline between day 4 (10 PM) and day 5 (9 AM); it increased again on the evening of day 5 and attained significantly higher levels by day 6 (4 PM). The fluctuations in uterine sialic acid and glycogen during early pregnancy appear to be a sequel to the fluctuating levels of estrogens during proestrus, estrus, and early pregnancy. A possible role for sialic acid in attachment of blastocysts to the uterus is postulated

    Comparison of leaf volatile aroma constituents and phenolic acid profiles of the seedling originated polyembryonic mango (Mangifera indica L.) genotypes

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    In mango, leaf and fruit volatile aroma profiles are variety specific which can be used as fingerprint of a variety. Such biochemical markers can also discriminate the nucellar and zygotic seedlings in polyembryonic mango varieties. In order to validate the applicability of volatile as well as phenolic acid profiles as biomarkers, the open pollinated seedlings of three polyembryonic varieties of mango were compared with their mother trees. Leaf volatile and phenol acid profiling were done using Gas Chromatography/Mass Spectrometry (GCMS) and Liquid Chromatography/Mass Spectrometry (LCMS) methods respectively. The sesquiterpene hydrocarbons were the most abundant in all the genotypes studied. Monoterpenoids were the major compounds in cultivars Vellaikolumban and Olour, while the sesquiterpenoids were the major compounds in cv. Turpentine. While terpinolene was the major monoterpenoid compound in Vellaikolumban and limonene in cv. Olour, the sesquiterpene á-gurjunene was the major compound in cv. Turpentine. Volatile profiling showed clear differences between the varieties but was similar within a variety. Among the 15 phenolic acids quantified in the leaves, P-coumaric acid, gallic acid, and ferulic acids were predominant whereas, vanillic acid, syringic acid, gentisic acid, benzoic acid, and sinapic acids were low in quantity. Phenolic acid profile did not show significant diversity among the varieties and therefore cannot be used for identification of varieties. The volatile profiling can be used for the identification and differentiation of polyembryonic mango genotypes

    Damping in Torsional Vibrations of Embedded Footings

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    The existing theoretical models to explain the dynamic behavior of embedded footings, overestimate the real response by neglecting damping forces which are inevitable as a result of slip at the interface of the embedded footing and soil. Many researchers in the field of Soil Dynamics have suggested that the inclusion of friction damping and internal damping in the mathematical model is necessary to improve the reliability of theoretical predictions. In this paper, results of the experimental investigations on full scale model embedded footings subjected to torsional mode of vibration have been presented. The results have been analyzed making use of three theoretical models, as developed by, Novak and Sachs (1973); Sankaran et al (1978) and Sankaran et al (1980). The importance of d-ping in predicting the dynamic response is brought out by a comparison of field vibratory test data with the corresponding values predicted by each of the above mentioned theoretical models

    Extraction Characteristics of Alumina from Gujrat Bauxites

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    ALUMINIUM has been termed the versatile metal of the 20th century since it finds applications right from the kitchen to the spaceship. The growing popularity of this metal has been attributed to its outstanding physical and chemical properties, viz. lightness, high strength of its alloys, high electrical and thermal conductivity, good workability and the most important of all-its resistance to corrosion. Aluminium and its alloys find extensive applications in road transport, railways and aviation due to their good strength for relatively low weight. Aluminium also finds applications in chemical & food processing plants. Owing to its good electrical conductivity it finds use in electrical industries . Its strength, brightness, durab-ility and capacity to take anodic coatings and colours are the most important properties for its use for archite-ctural purposes

    Cellular profile of bronchoalveolar lavage fluid in pulmonary tuberculosis

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    Bronchoalveolar lavage (BAL) has been used to study the immunopathogenesis of several respiratory diseases. The aim of our study was to determine the inflammatory changes occurring at the site of a tuberculous lesion in the lung in children
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