20,145 research outputs found

    Business process re-engineering using a customised mapping model: a case study in a SME

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    Increasing customer expectations in terms of cost, quality and services, together with competition in global markets has placed a premium on effective internal business processes. Companies are investing to streamline internal workflows, reduce costs and improve efficiency by re-engineering their business processes. Various mapping tools, such as Process Mapping and Value Stream Mapping, have been widely used as the vehicle for leveraging these improvements. However, in isolation any individual tool is often insufficient to achieve the desired results. This article uses a case study approach to investigate a real business process re-engineering (BPR) project in a medium sized manufacturing and service company. Process improvement is carried out using a set of mapping tools that have been selected, simplified and combined for practice. It has been shown that human factors are also crucial to the success of a BPR project. The case study illustrates the success of BPR with real practical examples of what works. Benefits include: increasing stock accuracy from 22% to above 95%; a reduction from about 40 reversed orders per month to zero, order fulfilment time reduced by 50%, and profitability improved 3 times at the end of the project. Non-quantifiable benefits include the elimination of a need for corrective actions, employees are more motivated, and the business stream is flowing smoothly allowing other business processes perform efficiently without disturbance

    Delineation of soil temperature regimes from HCMM data

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    The subsetting of HCMM data into ORSER format was completed for four dates using a modified SUBSET program. Large areas (approximately 2500 scan lines, 1680 elements) were selected to increase the occurrence of suitable control points for registration. Average daily temperatures (ADT) were calculated for each date. The MERGE program combined registered daytime temperature (DAY-IR) with nighttime temperature (NIGHT-IR) to form a separate two-channel data set. The SUBTRAN program averaged the DAY-IR and NIGHT-IR creating a third ADT channel. Registration equations for the four ADT data sets were generated. A one dimensional soil heat flow equation was modified to allow for mean annual soil temperature predictions using merged ADT data sets

    Delineation of soil temperature regimes from HCMM data

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    Evaluation of LANDSAT and Heat Capacity Mapping Mission (HCMM) data as input into National Cooperative Soil Survey is discussed. Signature classification techniques were applied to 13 May 76 LANDSAT data. LANDSAT data was overlaid with HCMM data, revealing registration problems caused by a shortage of control points in LANDSAT data, and the WARP program developed to improve registration accuracy. Initial images for control point selection were produced using digital terrain elevation data. Statistical procedures for evaluating data classification and to describe spatial distribution of surface temperature and its correlation with soil surface conditions were investigated

    Soil temperature investigations using satellite acquired thermal-infrared data in semi-arid regions

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    Thermal-infrared data from the Heat Capacity Mapping Mission satellite were used to map the spatial distribution of diurnal surface temperatures and to estimate mean annual soil temperatures (MAST) and annual surface temperature amplitudes (AMP) in semi-arid east central Utah. Diurnal data with minimal snow and cloud cover were selected for five dates throughout a yearly period and geometrically co-registered. Rubber-sheet stretching was aided by the WARP program which allowed preview of image transformations. Daytime maximum and nighttime minimum temperatures were averaged to generation average daily temperature (ADT) data set for each of the five dates. Five ADT values for each pixel were used to fit a sine curve describing the theoretical annual surface temperature response as defined by a solution of a one-dimensinal heat flow equation. Linearization of the equation produced estimates of MAST and AMP plus associated confidence statistics. MAST values were grouped into classes and displayed on a color video screen. Diurnal surface temperatures and MAST were primarily correlated with elevation

    Delineation of soil temperature regimes from HCMM data

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    Supplementary data including photographs as well as topographic, geologic, and soil maps were obtained and evaluated for ground truth purposes and control point selection. A study area (approximately 450 by 450 pixels) was subset from LANDSAT scene No. 2477-17142. Geometric corrections and scaling were performed. Initial enhancement techniques were initiated to aid control point selection and soils interpretation. The SUBSET program was modified to read HCMM tapes and HCMM data were reformated so that they are compatible with the ORSER system. Initial NMAP products of geometrically corrected and scaled raw data tapes (unregistered) of the study were produced

    Film thickness measurements on five fluid formulations by the mercury squeeze film capacitance technique

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    The thinning characteristics of five fluids were studied by measuring film thickness as a function of time. The mercury squeeze film capacitance technique was used. All tests were performed at room temperature. The synthetic hydrocarbon plus a nematic liquid crystal, N-(p-methoxybenzylidene)-p-butylaniline, thinned according to a Newtonian model and retained its bulk viscosity. The synthetic hydrocarbon plus a phosphonate antiwear additive and the synthetic hydrocarbon plus n-hexadecanol produced residual thick films. The synthetic hydrocarbon base fluids and the synthetic hydrocarbon plus a paraffinic resin displayed viscosity increases during thinning, but no residual films were formed

    Manufacturing checkout of orbital operational stages Midterm report, period ending 24 Feb. 1965

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    Manufacturing checkout of orbital operational Saturn S-IVB stage and instrument unit for parking orbit operation

    Measurement of the SOC State Specific Heat in ^4He

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    When a heat flux Q is applied downward through a sample of liquid 4He near the lambda transition, the helium self organizes such that the gradient in temperature matches the gravity induced gradient in Tlambda. All the helium in the sample is then at the same reduced temperature tSOC = ((T[sub SOC] - T[sub lambda])/T[sub lambda]) and the helium is said to be in the Self-Organized Critical (SOC) state. We have made preliminary measurements of the 4He SOC state specific heat, C[del]T(T(Q)). Despite having a cell height of 2.54 cm, our results show no difference between C[del]T and the zero-gravity 4He specific heat results of the Lambda Point Experiment (LPE) [J.A. Lipa et al., Phys. Rev. B, 68, 174518 (2003)] over the range 250 to 450 nK below the transition. There is no gravity rounding because the entire sample is at the same reduced temperature tSOC(Q). Closer to Tlambda the SOC specific heat falls slightly below LPE, reaching a maximum at approximately 50 nK below Tlambda, in agreement with theoretical predictions [R. Haussmann, Phys. Rev. B, 60, 12349 (1999)]

    Asymptotic Exit Location Distributions in the Stochastic Exit Problem

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    Consider a two-dimensional continuous-time dynamical system, with an attracting fixed point SS. If the deterministic dynamics are perturbed by white noise (random perturbations) of strength ϵ\epsilon, the system state will eventually leave the domain of attraction Ω\Omega of SS. We analyse the case when, as ϵ→0\epsilon\to0, the exit location on the boundary ∂Ω\partial\Omega is increasingly concentrated near a saddle point HH of the deterministic dynamics. We show that the asymptotic form of the exit location distribution on ∂Ω\partial\Omega is generically non-Gaussian and asymmetric, and classify the possible limiting distributions. A key role is played by a parameter μ\mu, equal to the ratio ∣λs(H)∣/λu(H)|\lambda_s(H)|/\lambda_u(H) of the stable and unstable eigenvalues of the linearized deterministic flow at HH. If μ<1\mu<1 then the exit location distribution is generically asymptotic as ϵ→0\epsilon\to0 to a Weibull distribution with shape parameter 2/μ2/\mu, on the O(ϵμ/2)O(\epsilon^{\mu/2}) length scale near HH. If μ>1\mu>1 it is generically asymptotic to a distribution on the O(ϵ1/2)O(\epsilon^{1/2}) length scale, whose moments we compute. The asymmetry of the asymptotic exit location distribution is attributable to the generic presence of a `classically forbidden' region: a wedge-shaped subset of Ω\Omega with HH as vertex, which is reached from SS, in the ϵ→0\epsilon\to0 limit, only via `bent' (non-smooth) fluctuational paths that first pass through the vicinity of HH. We deduce from the presence of this forbidden region that the classical Eyring formula for the small-ϵ\epsilon exponential asymptotics of the mean first exit time is generically inapplicable.Comment: This is a 72-page Postscript file, about 600K in length. Hardcopy requests to [email protected] or [email protected]

    The Politics of Katrina in New Orleans: A View From Ground Zero

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    What is New Orleans like today? What will it take to return the city to some semblance of normalcy? Stunned by the events and revelations of governmental incompetence since Katrina, we review Katrina\u27s aftermath and chime in on current policy debates about the city’s future. Our love for New Orleans may compromise our objectivity, but we find scholarly inspiration in three excellent articles in the last issue of The Forum
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