Organizational Linkages and Resource Mobilization: The Significance of Linkage Strength and Breadth*

This paper discusses the importance of identifying the environmental context in which organizations function. The relationship between an organization and those other groups and individuals constituting its environment is specified in terms of linkages. Two key dimensions of linkage are identified: strength and breadth. The former refers to how intimately the organization is connected with any other group while the latter refers to how extensive is the support. These linkages' dimensions are viewed from a “resource mobilization” perspective, i.e., as the means by which resources are brought into an organization. A study of linkages sustained by the NAACP during 1961–69 illustrates how the dimensions of linkage strength and breadth can be operationalized and applied. New avenues of research then are suggested.     

Packing <Emphasis Type="Bold">[1, Δ]</Emphasis>-factors in graphs of small degree

Given an undirected, connected graph G with maximum degree Δ, we introduce the concept of a [1, Δ]-factor k-packing in G, defined as a set of k edge-disjoint subgraphs of G such that every vertex of G has an incident edge in at least one subgraph. The problem of deciding whether a graph admits a [1,Δ]-factor k-packing is shown to be solvable in linear time for k = 2, but NP-complete for all k≥ 3. For k = 2, the optimisation problem of minimising the total number of edges of the subgraphs of the packing is NP-hard even when restricted to subcubic planar graphs, but can in general be approximated within a factor of by reduction to the Maximum 2-Edge-Colorable Subgraph problem. Finally, we discuss implications of the obtained results for the problem of fault-tolerant guarding of a grid, which provides the main motivation for research.     

Technology selection in the absence of standardised materials and processes: a survey in the UK composite materials supply chain

Composite materials is an industry where technology selection has major consequences as there is not a standard manufacturing process, nor are there standardised materials with defined or proscribed properties for companies to select as multiple solutions are technically viable. This research aims to identify key factors for manufacturing technology selection in the UK composite materials supply chain. Literature review and managers’ opinions were used to identify 18 factors affecting manufacturing technology selection. This was followed by a survey comprising the multi-tier supply chain of the composite materials industry. The results of the survey show ‘on time deliveries/service level to customers’, ‘improve quality’ and ‘reduce cycle time’ received the highest average ratings. In this study a correlation analysis was performed to identify the underlying dependencies between the factors investigated. The identification and use of underlying dependencies rather than highest average provided a more comprehensive picture of the factors that affect technology selection in the composite materials industry. For this study, experts in composite materials were asked to comment on the findings of the survey and their value to the industry. The results presented may assist companies in the composite materials industry with technology selection decision-making processes.     

On the measurement and analysis of asymmetry with applications to facial modelling

Summary.  Asymmetry is a feature of shape which is of particular interest in a variety of applications. With landmark data, the essential information on asymmetry is contained in the degree to which there is a mismatch between a landmark configuration and its relabelled and matched reflection. This idea is explored in the context of a study of facial shape in infants, where particular interest lies in identifying changes over time and in assessing residual deformity in children who have had corrective surgery for a cleft lip or cleft lip and palate. Interest lies not in whether the mean shape is asymmetric but in comparing the degrees of asymmetry in different populations. A decomposition of the asymmetry score into components that are attributable to particular features of the face is proposed. A further decomposition allows different sources of asymmetry due to position, orientation or intrinsic asymmetry to be identified for each feature. The methods are also extended to data representing anatomical curves across the face.     

Does poor weight gain identify children in need?

To determine the socioeconomic variables in children with slow growth (failure to thrive), a case–control study was carried out in two economically deprived areas of Newcastle upon Tyne. Three hundred and six children, aged 12–24 months, registered at two health authority clinics, were studied by reviewing their growth charts. Sixty-three had poor growth (weight deviating downwards across two major centiles from the maximum centile attained at 4–8 weeks of age). Five children were excluded because of known organic disease. A matched control group of normally growing children was selected from the same clinics. Study children and controls were examined and their parents interviewed on a range of socioeconomic, health and interactional factors. A health visitor assessment and a record of social work contact was obtained. The slowly growing children differed significantly from controls in being lighter and shorter, while their mothers spent less on food, needed more help with the child, had a poorer home environment and expressed greater concern over their child's health. Four different patterns of poor growth were identified by inspection of the charts: early onset (before 6 months but sustained), late onset (after 6 months), temporary and recurrent. The ‘recurrent’ group was associated with parenting difficulties and the ‘late onset’ group with adverse socioeconomic factors. Slow growth patterns in children under 2 years may be used as a screening tool to identify ‘children in need’ and should be sought on a population basis. Those identified can then be assessed further to ascertain the area where underlying difficulties lie, for intervention to follow as appropriate.     

Are Consumption and Government Expenditures Substitutes or Complements? Morishima Elasticity Estimates from the Fourier Flexible Form

This article provides estimates of Morishima elasticities of substitution between private consumption expenditures (nondurable goods, services, and the stock of durable goods) and government expenditures (federal defense expenditures, federal nondefense expenditures, and state and local expenditures), finding consistent evidence that private consumption and government expenditures are net Morishima substitutes. Elasticities of substitution vary over our sample period, estimated elasticities are generally asymmetric, and short-run elasticity estimates differ from unity. In the long run, substitution elasticities remain asymmetric and vary over time. Our estimates are free of arbitrary functional form assumptions that can bias statistical inferences arising from our optimization model.     

Inflation and the estimated sizes of notes

Thirty adults were asked in 1982 to estimate the size of various British notes (£1.00, £5.00, £10.00, £20.00) at a time when the inflation rate was approximately 15%. Although there were no differences in their estimation as function of their age, sex, income or use of credit cards they consistentlyunder-estimated the size of all notes. Furthermore they overestimated the size of the old pound note (withdrawn in 1979) and underestimated the size of the new pound note. These findings are attributable to the effects of inflation.