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  • 1
    Digitale Medien
    Digitale Medien
    The Stability of the Five-Factor Model of Personality in Personnel Selection and Assessment in Greece (2001)
    Oxford, UK and Boston, USA : Blackwell Publishers Ltd
    International journal of selection and assessment 9 (2001), S. 0 
    Details
    ISSN: 1468-2389
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Wirtschaftswissenschaften
    Notizen: The stability and replicability of the Five-Factor model of personality across samples and testing purposes remain a significant issue in personnel selection and assessment. The present study explores the stability of a new Greek Big Five personality measure (TPQue) across different samples in order to explore the suitability of the measure in personnel selection and assessment. The factor structure of the measure across three samples (students, employees, and job applicants) is examined. The results of exploratory and confirmatory factor analyses show that the five-factor structure remains intact for the students’, the applicants’ and the employees’ samples – contrary to previous studies – with all the sub-scales of the personality measure (TPQue) loading on the intended factors. Furthermore, congruence coefficients between the samples justify the stability of the model in the working settings.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/1468-2389.00181
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  • 2
    Digitale Medien
    Digitale Medien
    The Occupational Psychology Research Group, Manchester School of Management, UMIST, UK (1996)
    Oxford, UK : Blackwell Publishing Ltd
    International journal of selection and assessment 4 (1996), S. 0 
    Details
    ISSN: 1468-2389
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Wirtschaftswissenschaften
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1468-2389.1996.tb00048.x
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  • 3
    Digitale Medien
    Digitale Medien
    A new method of quantitative interpretation of SP anomalies produced by a polarized inclined sheet (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 43 (1995), S. 0 
    Details
    ISSN: 1365-2478
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Geologie und Paläontologie , Physik
    Notizen: A new method is proposed for the quantitative interpretation of SP field data produced by a polarized ore body and simulated by an inclined sheet. The theoretical concept is based on the study of the amplitude Spectrum. It is shown that the SP amplitude Spectrum is not continuous at zero frequency; this leads to the dip angle determination of the inclined sheet. It is also shown that the SP amplitude spectrum is practically nullified at a characteristic amortization frequency that depends on the depth of the polarized body. The maximum amplitude Spectrum value of the SP gradient is used to estimate the depth to the bottom of the polarized body. Thus, the geometrical parameters h and H, the depths to the top and bottom, respectively, as well as the dip angle of the inclined sheet, can be satisfactorily determined. Some problems may arise in the determination of these parameters, affecting their accuracy, whenever unwanted frequency noise is present.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2478.1995.tb00274.x
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  • 4
    Digitale Medien
    Digitale Medien
    Fitting the person to the organisation: examining the personality-job performance relationship from a new perspective (2003)
    Bradford : Emerald
    Journal of managerial psychology 18 (2003), S. 639-648 
    Details
    ISSN: 0268-3946
    Quelle: Emerald Fulltext Archive Database 1994-2005
    Thema: Psychologie , Wirtschaftswissenschaften
    Notizen: The current study represents an attempt to explore personality dispositions and personality process in a P-O fit context. A total of 227 employees completed self-report measures of personality and job satisfaction and their supervisors assessed their citizenship behaviours, generic work competencies and overall job performance. The theoretical approach of the cognitive-affective personality system was adopted in exploring the research questions and discussing the findings, which reinforced the significance of a confirmatory, theory-based approach in personality testing. The results supported the existence of relationships between personality and job satisfaction but not between personality and the performance-related variables, although agreeableness and openness to experience were related to performance for occupations involving interpersonal interaction.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1108/02683940310502368
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  • 5
    Digitale Medien
    Digitale Medien
    The role of emotional intelligence and personality variables on attitudes toward organisational change (2004)
    Bradford : Emerald
    Journal of managerial psychology 19 (2004), S. 88-110 
    Details
    ISSN: 0268-3946
    Quelle: Emerald Fulltext Archive Database 1994-2005
    Thema: Psychologie , Wirtschaftswissenschaften
    Notizen: Although the role of organisational characteristics in the change process has been extensively analysed and discussed in the literature, individual characteristics, which are equally crucial for the success of change, have been neglected. Therefore, the purpose of the present study is to add a different way of looking and working with organisational change by focusing on individuals' emotions and personality traits. This paper explores how emotional intelligence and the "big five" dimensions of personality can facilitate organisational change at an individual level by exploring the relationship between these attributes and attitudes toward organisational change. The sample consisted of 137 professionals who completed self-report inventories assessing emotional intelligence, personality traits and attitudes towards organisational change. The results confirmed that there is a relationship between personality traits and employees' attitudes toward change. Similarly, the contribution of emotional intelligence to the attitudes to change was found to be significant, indicating the added value of using an emotional intelligence measure above and beyond the effect of personality. The practical implications of these findings are discussed in relation to the phases of a change project.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1108/02683940410526082
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  • 6
    Digitale Medien
    Digitale Medien
    Somatic embryogenesis and in vitro rosmarinic acid accumulation in Salvia officinalis and S. fruticosa leaf callus cultures (1999)
    Springer
    Plant cell reports 18 (1999), S. 462-466 
    Details
    ISSN: 1432-203X
    Schlagwort(e): Key words Rosmarinic acid ; Salvia officinalis ; Salvia fruticosa ; Secondary metabolites ; Somatic embryogenesis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The effect of explant age, plant growth regulators and culture conditions on somatic embryogenesis and rosmarinic acid production from leaf explants of Salvia officinalis and S. fruticosa plants collected in Greece was investigated. Embryogenic callus with numerous spherical somatic embryos could be induced on explants derived from both species and cultured for 3 weeks on a Murashige and Skoog (MS) medium supplemented with 1.8–18 μm 2,4-dichlorophenoxyacetic acid (2,4-D) and kinetin (Kin) or 10.5–21 μm 1-naphthalenacetic acid and 6-benzyladenine. Only explants from young plants (with six to eight leaves) responded to the culture treatments and, in general, low light intensities (50 μmol m–2 s–1) favoured callus formation and induction of somatic embryos. Somatic embryos were further developed on the same medium. Heart- and torpedo-shaped embryos (1–2 mm long) were subcultured on a growth-regulator-free MS medium for maturation. Maximum rosmarinic acid accumulation in S. officinalis and S. fruticosa callus cultured on 4.5 μm 2,4-D and 4.5 μm Kin was 25.9 and 29.0 g/l, respectively.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002990050604
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  • 7
    Digitale Medien
    Digitale Medien
    Synthesis of a trinuclear ruthenium cluster containing pyridine and 4-acetylpyridine ligands and its immobilization on functionalized silica (1997)
    Springer
    Monatshefte für Chemie 128 (1997), S. 759-766 
    Details
    ISSN: 1434-4475
    Schlagwort(e): Ruthenium acetate cluster ; Spectroelectrochemistry ; Functionalized silica
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Der dreikernige Cluster [Ru3O(Ac)6(py)2(acpy)]PF6(py: Pyridin;acpy: 4-Acetylpyridin) wurde hergestellt und an funktionalisiertem Kieselgel verankert. Mit Hilfe cyclischer Voltammetrie und spektroelektrochemischer Messungen konnten fünf aufeinanderfolgende Redoxpaare beobachtet werden (E 0=−1.4, −0.98, 0.21, 1.23 und 2.2 V bezüglich SHE). Die elektrochemischen und spektroskopischen Eigenschaften bleiben in den fixierten Clustern erhalten und erlauben deren Verwendung in Optoden und bei Elektronenübertragungsprozessen.
    Notizen: Summary The trinuclear cluster [Ru3O(Ac)6(py)2(acpy)]PF6 (py: pyridine;acpy: 4-acetylpyridine) has been synthesized and anchored on functionalized silica. Five successive redox couples exhibitingE°=−1.4, −0.98, 0.21, 1.23, and 2.2 Vvs. SHE have been characterized in acetonitrile solutions based on cyclic voltammetry and spectroelectrochemical measurements. The redox and spectroscopic properties are maintained in the immobilized species, allowing its use in optodes and in electron transfer processes.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00807086
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  • 8
    Digitale Medien
    Digitale Medien
    New approach to constrained predictive control with simultaneous model identification (1996)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 42 (1996), S. 2857-2868 
    Details
    ISSN: 0001-1541
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: A new framework to closed-loop process identification is proposed. It relies on simultaneous constrained model predictive control (MPC) and identification (MPCI). MPCI obtains sufficient model information on a process under constrained MPC, while minimally disturbing that process. To select a process input at each time step, MPCI solves a constrained optimization problem on-line with respect to process input values over a finite moving horizon. These process inputs should satisfy all conventional MPC constraints, as well as additional constraints that assure persistent excitation of the process by these inputs. The persistent excitation constraints can be enabled or disabled, according to process identification needs of the closed loop. An iterative scheme is proposed for the numerical solution of the on-line optimization problem. At each iteration, that iterative scheme finds a suboptimal feasible solution of the on-line optimization problem by solving a semidefinite programming problem whose global convergence is guaranteed. The effectiveness of the proposed new methodology is illustrated through simulations on a linear time-varying process.
    Zusätzliches Material: 8 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/aic.690421015
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  • 9
    Digitale Medien
    Digitale Medien
    Design of robust nonsquare constrained model-predictive control (1996)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 42 (1996), S. 2582-2593 
    Details
    ISSN: 0001-1541
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: A model-predictive control (MPC) design methodology for processes with more manipulated inputs than outputs is developed. Essential features of the proposed approach are the following: the on-line optimization minimizes an objective function based on the l2 norm; an end-condition equation is utilized; model uncertainty is considered as upper and lower bounds on the pulse-response-model coefficients; hard constraints on the input and move-size variables and soft constraints on the output variables are posed. A major difference between square and nonsquare MPC is that in the former the end-condition can be used directly, while in the latter a nonlinear programming problem needs to be solved during the design phase to select values for the input move suppression coefficients. This technique is illustrated through a number of simulations and application to a real industrial process.
    Zusätzliches Material: 10 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/aic.690420919
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  • 10
    Digitale Medien
    Digitale Medien
    Performance bounds for robust quadratic dynamic matrix control with end condition (1995)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 41 (1995), S. 2083-2097 
    Details
    ISSN: 0001-1541
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Sufficient conditions for robust stability of multivariable quadratic dynamic matrix controllers with an end condition (EQDMC) are developed, and the effect of these conditions on closed-loop performance is examined. Hard and soft constraints on process inputs and outputs, and process modeling uncertainty are present Modeling uncertainty is quantified in the time domain as upper and lower bounds on the coefficients of a finite pulse response process model. The robust stability conditions that we develop involve the prediction and control horizon lengths, and a set of inequalities that the move-suppression coefficients in the on-line EQDMC objective function must satisfy. These conditions imply that for processes with modeling uncertainty, the move-suppression coefficients could be quite large and quite sensitive to the control horizon length and process modeling errors. This could make the EQDMC controller conservative, thus significantly deteriorating performance. To determine the optimal control horizon length corresponding to the best robust performance of the EQDMC controller for a class of disturbances, follow the proposed EQDMC controller design methodolo∼. To illustrate this methodology simulations on an SISO example and a 2 × 2 subsystem of the Shell Standard Control Problem are presented.
    Zusätzliches Material: 14 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/aic.690410908
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