2,277 research outputs found
Personal development in the workplace : the concept and its usage in selection and training
The use of the concept of Personal Development is widespread in the commercial world, particularly with respect to Selection and Training. Here the use of the term by Managers and (Personal Development) Trainers is investigated through questionnaires and semi-structured interviews. Although both groups use the concept freely, neither group is able to clearly articulate what they mean. Managers' emphasis external changes (acquisition of skills/attainment of goals) whereas Personal Development Trainers delineate a separate notion of Personal Growth, which relates to internal change (a way of being rather than of doing).In Selection Managers rely extensively on 'intuition', making decisions on the basis of tacit criteria relating to 'personal qualities' that are not part of the formal specification of the post.In relation to Training both groups identify 'Key Insights' as the product. Benefits relate to both 'being' (awareness) and 'doing' (improved performance).A distinction becomes apparent between Personal Development, which relates to directly to improvement in work performance, and Personal Growth, which is seen to increase personal 'skills', and enhance personal 'qualities'. The research establishes a list of Key Insights, the foremost of which is 'Self Awareness'.It is evident that Managers are looking beyond KSA's (Knowledge Skills and Abilities) to encompass BVP's (Beliefs, Values and Personality) in both the selection and training of employees. To facilitate this a greater understanding of the concepts of Personal Development and Personal Growth is needed. It is suggested that the identification of Key Insights provide a structure to enable clarification of thinking by both: Managers and Trainers
A Hybrid Achromatic Metalens
Metamaterials and metasurfaces are widely used to manipulate electromagnetic
waves over a broad range of wavelengths. Several recent efforts have focused on
metalenses, ultra-thin optical elements that focus light using subwavelength
structures. Compared to their refractive counterparts, metalenses offer reduced
size and weight, improved manufacturability, and new functionality such as
polarization control. However, metalenses that correct chromatic aberration
also suffer from markedly reduced focusing efficiency. Here we introduce a
Hybrid Achromatic Metalens (HAML), that overcomes this trade-off and offers
improved focusing efficiency over a broad wavelength range from 1000 - 1800 nm.
Fabricated HAMLs demonstrated diffraction limited performance for numerical
apertures (NA) of 0.27, 0.11, and 0.06 with average focusing efficiencies and maximum efficiencies ~ . HAMLs can be designed by combining
recursive ray-tracing and simulated phase libraries rather than computational
intensive global search algorithms. Moreover, HAMLs can be fabricated in
low-refractive index materials using multi-photon lithography for customization
or using molding for mass production.Comment: 20 pages, 7 figure
Experimental Study on Application of Marble Waste as Conventional Aggregate for Base Course Materials
Recently, highway and construction industries utilize a substantial quantity of conventional aggregates. The increasing demands for conventional aggregate cause an increase in the cost of construction, reduction of natural resources, and continuing deterioration of the earth's surface. On the other hand, the waste generated from the marble industries during the process of cutting and polishing was increasing day by day all over the world. In Ethiopia, the use of Marble Waste Aggregate materials in road construction as a base course material was not well-known, and it was simply wasted at every place where the marble production was continuing. Therefore, this paper focused on evaluating the possibility of using marble waste aggregate as conventional aggregate in the base course layer of flexible pavements by experimental method. To achieve the objectives of the research, mechanical stabilization and laboratory tests have been carried out at different percentage replacement of Conventional Aggregate by (0%, 20%, 40%, 50%, 60%, 80%, and 100%) of Marble Waste Aggregate weights. Marble wastes materials are collected from Burayyu city, Alisha marble processing industry. The laboratory test results for MWA indicated SG, ACV, AIV, LAA, Flakiness Index , Elongation Index, Plastic Index, Water Absorption, and CBR of 2.74%, 23.63%, 26.21%, 27.03%, 26.48%, 13.29%, Non Plastic, 0.50% and 73.3%, respectively. These test results fulfilled the ERA standard specification for some tests, and they showed marginal quality values to the standard specification for GB2 and GB3 base course materials. CBR and gradation test results shown failure to meet the standard specification. Thus, mechanical stabilization was done to improve the mechanical and physical properties of the Marble Waste Aggregate. Blending of 80%MWA with 20% CA results in SG, ACV, AIV, LAA, Flakiness Index, Elongation Index, Plastic Index, Water Absorption, and CBR of 2.83%, 18.2%, 21.52%, 22.58%, 23.79%, 16.29%, Non Plastic, 0.80%,and 82.5% respectively. At this proportion, the gradation also observed to fit with the required ERA standard specification of GB2 and GB3 materials. Therefore, the use of marble waste aggregate up to 80% by weight is recommended for the road base course layer, when it is found near to the construction site and in places where the materials are abundantly available
Towards a taxonomy of process quality characteristics for assessment
Previous assessment of process quality have focused on process capability (i.e. the ability of a process to meet its stated goals). This paper proposes a taxonomy of alternative process quality characteristics based on intrinsic and extrinsic quality attributes. The ultimate goal of this taxonomy is to provide a framework to conduct process assessments using different process quality aspects. Such a framework would considerably broaden process quality perspectives beyond the primary measure of process capability. It would also allow practitioners to identify and evaluate relevant quality characteristics for processes based on specific contexts and implications. For the process assessment model developers, it offers a list of process quality characteristics that could be used to develop relevant process measurement frameworks
Multiphoton radiative recombination of electron assisted by laser field
In the presence of an intensive laser field the radiative recombination of
the continuum electron into an atomic bound state generally is accompanied by
absorption or emission of several laser quanta. The spectrum of emitted photons
represents an equidistant pattern with the spacing equal to the laser
frequency. The distribution of intensities in this spectrum is studied
employing the Keldysh-type approximation, i.e. neglecting interaction of the
impact electron with the atomic core in the initial continuum state. Within the
adiabatic approximation the scale of emitted photon frequencies is subdivided
into classically allowed and classically forbidden domains. The highest
intensities correspond to emission frequencies close to the edges of
classically allowed domain. The total cross section of electron recombination
summed over all emitted photon channels exhibits negligible dependence on the
laser field intensity.Comment: 14 pages, 5 figures (Figs.2-5 have "a" and "b" parts), Phys.Rev.A
accepted for publication. Fig.2b is presented correctl
LHC Optics Measurement with Proton Tracks Detected by the Roman Pots of the TOTEM Experiment
Precise knowledge of the beam optics at the LHC is crucial to fulfil the
physics goals of the TOTEM experiment, where the kinematics of the scattered
protons is reconstructed with the near-beam telescopes -- so-called Roman Pots
(RP). Before being detected, the protons' trajectories are influenced by the
magnetic fields of the accelerator lattice. Thus precise understanding of the
proton transport is of key importance for the experiment. A novel method of
optics evaluation is proposed which exploits kinematical distributions of
elastically scattered protons observed in the RPs. Theoretical predictions, as
well as Monte Carlo studies, show that the residual uncertainty of this optics
estimation method is smaller than 0.25 percent.Comment: 20 pages, 11 figures, 5 figures, to be submitted to New J. Phy
Double diffractive cross-section measurement in the forward region at LHC
The first double diffractive cross-section measurement in the very forward
region has been carried out by the TOTEM experiment at the LHC with
center-of-mass energy of sqrt(s)=7 TeV. By utilizing the very forward TOTEM
tracking detectors T1 and T2, which extend up to |eta|=6.5, a clean sample of
double diffractive pp events was extracted. From these events, we measured the
cross-section sigma_DD =(116 +- 25) mub for events where both diffractive
systems have 4.7 <|eta|_min < 6.5 .Comment: 5 pages, 1 figure, submitted for publicatio
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