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31.
In this paper we apply multiattribute value theory as a framework for examining the use of pairwise comparisons in the analytic hierarchy process (AHP). On one hand our analysis indicates that pairwise comparisons should be understood in terms of preference differences between pairs of alternatives. On the other hand it points out undesirable effects caused by the upper bound and the discretization of any given ratio scale. Both these observations apply equally well to the SMART procedure which also uses estimates of weight ratios. Furthermore, we demonstrate that the AHP can be modified so as to produce results similar to those of multiattribute value measurement; we also propose new balanced scales to improve the sensitivity of the AHP ratio scales. Finally we show that the so-called supermatrix technique does not eliminate the rank reversal phenomenon which can be attributed to the normalizations in the AHP. © 1997 John Wiley & Sons, Ltd. 相似文献
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Simon French Lisa Simpson Elizabeth Atherton Valerie Belton Robyn Dawes Ward Edwards Raimo P. Hmlinen Oleg Larichev Freerk Lootsma Alan Pearman Charles Vlek 《Journal of Multi-Criteria Decision Analysis》1998,7(5):242-262
This paper reports on a workshop on Problem Formulation in Multi-Criteria Decision Analysis held at SPUDM97. The focus of the workshop was the problem formulation phase which occurs between the analyst meeting a person with a ‘mess’ and the time he or she begins to analyse a structured problem with several alternatives scored against several attributes or criteria. The objectives were: to share experience on procedures which might be transferable between the methodologies; to demonstrate different skills used by the analyst in structuring decision problems; and to catalyse a discussion on the problem formulation phase of an analysis. Three analysts, who generally approach problems using multiattribute methods, addressed the same problem. The problem used was constructed to be realistic to three decision makers, who had been trained in the issues of concern. There were two sessions. Each analyst was assigned a decision maker and formulated the problem independently in the first session, held in parallel. They were each observed by two observers and many of the audience at the workshop. The three formulations were presented along with the comments of the observers and discussed at a second plenary session. This paper reports the three formulations and observations, remarking on the ‘tricks of the trade’ employed by the analysts in formulating the problem. The analysts also describe their thinking and their aims in adopting their approach and style of interaction. More general remarks on the process of decision analysis are also offered. © 1998 John Wiley & Sons, Ltd. 相似文献
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We-intentions 总被引:3,自引:0,他引:3
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Raimo Tuomela 《Journal for General Philosophy of Science》1980,11(2):276-291
38.
Estrogen treatment alleviates NMDA-antagonist induced hippocampal LTP blockade and cognitive deficits in ovariectomized mice 总被引:5,自引:0,他引:5
Gureviciene I Puoliväli J Pussinen R Wang J Tanila H Ylinen A 《Neurobiology of learning and memory》2003,79(1):72-80
Estrogen is implicated in hippocampus-dependent spatial learning as well as structural organization and electrophysiological properties of the rat hippocampus but little is known about its mechanisms of action in mice. In this study, we investigated pharmacologically whether estrogen interacts with the hippocampal N-methyl-D-aspartate (NMDA) receptors in ovariectomized mice as postulated for rats. Female C57BL/6J mice were ovariectomized at 5 months, and 2 weeks before testing at 12 months, half of them received subcutaneous estrogen pellets containing 0.18 mg of 17 beta-estradiol. The competitive NMDA-antagonist, 3-((+/-)-2-carboxypiperazin-4-yl)-propyl-1-phosphonic acid (CPP), was administered at 5.0 and 10.0 microM to block induction of long-term potentiation (LTP) in the hippocampal slice and intraperitoneally at 0.5, 2.0, and 5.0 mg/kg to impair spatial learning in the water maze. Estrogen treatment shifted the dose-response curve to CPP in both experiments. First, 10 microM CPP blocked the initiation of LTP in all mice, but 5 microM only in ovariectomized non-estrogen-treated mice. Second, final level of acquisition and probe trial performance in the water maze were less affected by high doses of CPP in the estrogen-treated ovariectomized mice than in non-treated group. In control tests for motor side effects, estrogen treatment did not reduce the tendency of CPP to decrease locomotor activity in the open field and impair balance on a rotating rod, and estrogen by itself decreased swimming speed as did CPP, but these effects did not interact. Our findings support the notion that estrogen treatment increases the number of active NMDA-receptors in the mouse hippocampus. 相似文献
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Kati Juva Raimo Sulkava Auli Verkkoniemi Leena Niinistö 《Journal of Clinical Geropsychology》2001,7(1):39-45
We examined 553 persons aged 85 years or more, who comprised 92% of all 601 citizens of a Finnish city Vantaa. The Mini-Mental State Examination (MMSE), Index of Activities of Daily Living (ADL), and the Instrumental Activities of Daily Living (IADL) scale were completed. Diagnoses of dementia and depression were made according to the DSM-III-R criteria. Mean MMSE score for men was 20.1 and for women was 16.8 (difference = 3.3 points). When demented subjects (N = 210) were excluded, the difference reduced to 2.2 points. When depressed subjects were also excluded, the difference further reduced to 1.9 points. Education and institutionalization explained some of this difference, but sex also had an independent effect on the MMSE score. The home-dwelling women had lower functional capacity compared with respective men, as measured by the ADL scale. No differences were found in the IADL scale. It seems that men over 85 years of age represent a very select population. Men probably die earlier in the course of any deteriorating illness. It is also possible that our measurements of cognitive capacity favor men among very old people. 相似文献
40.
Jaana Kettunen James P. Sampson Jr. Raimo Vuorinen 《British Journal of Guidance & Counselling》2015,43(1):43-56
This article reports findings from a phenomenographic investigation into career practitioners' understanding of competency for social media in career services. Sixteen Danish and Finnish practitioners with experience using social media in career services were interviewed in focus groups. Competency for social media in career services was conceived as (i) an ability to use social media for delivering information, (ii) an ability to use social media for delivering career services, (iii) an ability to utilise social media for collaborative career exploration and (iv) an ability to utilise social media for co-careering. The findings can be used to develop pre-service and in-service training of career practitioners and support for the deepening of their competency, using the critical aspects that were identified. 相似文献