strategic sourcing for the short lifecycle products abstract motivated by the sourcing of integrated circuits in the electronics industry we study sourcing strategies for short lifecycle products with two substitutable parts the first part referred to as the fast part is highly responsive while having negligible fixed cost but high variable cost the second part referred to as the slow part is opposite in these properties we build models starting with the fast part to target the initial market then switching to the pre ordered slow part for volume production and eventually transitioning back to the fast part until the product s end of lifecycle assuming an optional second order for the slow part we model the sourcing process by a two stage stochastic program the thresholds for the fixed costs and the optimal ordering policies for the two orders are exactly derived assuming the demand throughout the product lifecycle as a multivariate normal distribution we approximately compute the policy parameters and expected profit for the two order problem in comparison to the fast part only strategy and one order slow part strategy the second order of the slow part could be of great value if the demand correlation across time is high and or the cost difference between the two parts is large we also study the joint impact of fixed cost and leadtime as well as demand variation on the sourcing strategies

research activities and budget allocations among federal reserve banks this paper applies the theory of bureaucracy to the internal operation of the federal reserve system according to the bureaucratic model the board of governors will use budget allocations to the individual reserve banks as a means of controlling their provision of information by examining the research publications of reserve banks we find two banks which began providing adverse publicity for the system in recent years the empirical analysis reveals that the budgets of these banks have decreased following the changes in research agendas

federal reserve independence abstract the federal reserve is always called an independent agency the term independent is rarely defined the only attempt in the literature and internal records is based on chairman martin s statement that the federal reserve is independent with the government not independent of the government martin explained several times that independence within government meant that the federal reserve helped to finance government budget because they were approved by congress and signed by the president financing budget deficits is the very opposite of the principle adopted when congress approved the federal reserve act in 1913 in fact the federal reserve has supported treasury operations many times i conclude that it is far more important to have an enforceable policy rule such as the taylor rule but any rule must have a provision that permits the rule to be set aside

inflationary bias of the federal reserve system a bureaucratic perspective abstract the federal reserve system does not receive a budget from congress but instead finances its operation from interest payments on its government security portfolio this peculiar financing arrangement provides the foundation for a bureaucratic model of federal reserve official behavior the empirical section tests the bureaucratic model by analysing the fed s expenditure record since 1947 and its policy actions during periods of constitutional revision

power in firm networks what it means for regional innovation systems christopherson s clark j 2007 power in firm networks what it means for regional innovation systems regional studies 41 1223 1236 the role of power within regional firm networks is noted in empirical studies but insufficiently theorized it is suggested that network functioning is conflictual and that more powerful network members particularly transnational corporations tncs leverage regional resources to advance their sustainable competitive advantage the agendas and power exercised by tncs within regionalized firm networks have significant implications for regional policy and the uneven allocation of resources and capacities within and among regions the findings indicate that transnational firm access to resources that are critical to innovation including university research and skilled labour negatively affects the potential for innovation by small and medium size firms christopherson s et clark j 2007 le pouvoir au sein des reseaux d entreprise son importance pour les systemes d

multi item quick response system with budget constraint quick response mechanisms based on effective use of up to date demand information help retailers to reduce their inventory management costs we formulate a single period inventory model for multiple products with dependent multivariate normal demand distributions and a given overall procurement budget after placing orders based on an initial demand forecast new market information is gathered and demand forecast is updated using this more accurate second forecast the retailer decides the total stocking level for the selling season the second order is based on an improved demand forecast but it also involves a higher unit supply cost to determine the optimal ordering policy we use a computational procedure that entails solving capacitated multi item newsboy problems embedded within a dynamic programming model various numerical examples illustrate the effects of demand variability and financial constraint on the optimal policy it is found that existence of a budget constraint may lead to an increase in the initial order size it is also observed that as the budget available decreases the products with more predictable demand make up a larger share of the procurement expenditure

interorganizational alliances and the performance of firms a study of growth and innovation rates in a high technology industry this paper investigates the relationship between intercorporate technology alliances and firm performance it argues that alliances are access relationships and therefore that the advantages which a focal firm derives from a portfolio of strategic coalitions depend upon the resource profiles of its alliance partners in particular large firms and those that possess leading edge technological resources are posited to be the most valuable associates the paper also argues that alliances are both pathways for the exchange of resources and signals that convey social status and recognition particularly when one of the firms in an alliance is a young or small organization or more generally an organization of equivocal quality alliances can act as endorsements they build public confidence in the value of an organization s products and services and thereby facilitate the firm s efforts to attract customers and other corporate partners the findings from models of sales growth and innovation rates in a large sample of semiconductor producers confirm that organizations with large and innovative alliance partners perform better than otherwise comparable firms that lack such partners consistent with the status transfer arguments the findings also demonstrate that young and small firms benefit more from large and innovative strategic alliance partners than do old and large organizations copyright 2000 john wiley sons ltd

deficits money and inflation abstract this paper examines the interrelationships between monetary and fiscal policy specifically it seeks to determine whether government budget deficits influence monetary growth using a money supply model originally developed by barro we find that deficits have had a significant impact on the growth of the u s money supply throughout most of the period since 1961 such a relationship need not always hold it depends on whether government deficits place upward pressure on interest rates and whether the central bank monetizes the debt in an effort to stabilize interest rates

reducing the cost of demand uncertainty through accurate response to early sales traditionally fashion products have incurred high losses due to stockouts and inventory obsolence because long lead times coupled with a concentrated selling season force all or at least most production to be committed before demand information is available under a quick response system lead times are shortened sufficiently to allow a greater portion of production to be scheduled in response to initial demand we model and analyze the decisions required under quick response and give a method for estimating the demand probability distributions needed in our model we applied these procedures with a major fashion skiwear firm and found that cost relative to the current informal response system was reduced by enough to increase profits by 60 relative to the cost that would have been incurred if no response were used optimized response reduces cost by enough to roughly quadruple profits

the demise of the public interest model of the federal reserve system the political economy of american monetary policy cambridge university press cambridge 19901 edited by thomas mayer is a collection of one previously published and eighteen unpublished works that seeks to review consolidate and extend the growing literature on a positive theory of the federal reserve system a major theme of the collection is that the traditional public interest view of the fed has little to offer as a guide to understanding the behavior of federal reserve officials at the same time the collection offers a word of caution to practitioners of the positive theory who use a naive public choice approach according to this subplot a narrow self interest approach to the fed is not much better than the traditional alternative a general theory of the federal reserve system requires the right blend of the best elements from the staid public interest view and the renegade public choice view as a review of the current state of the literature this collection of works has much to offer the book is at its best in posing questions that force not only the public interest proponent but also the naive public choice theorist to rethink their positions the book is less useful i think as a road map to future research in contrast to this book s premise the problem i see with the naive public choice approach is not that it has been too radical but that it has not been radical enough the renegade assumption that fed decisionmakers are self interested utility maximizers is misleading only when used within the context of a misspecified model of the macroeconomy i argue in this review essay that the next discrete step in the evolution of a positive theory of central banking is to supplement the self interest assumption with

congressional influence on u s monetary policy abstract congressional influence is generally discounted or ignored in political models of federal reserve behavior here i show that changes in the leadership of the senate banking committee are significantly correlated with monetary base growth more liberal committee leaders are associated with significantly higher base growth other factors held constant the result is shown to hold across several econometric specifications and different definitions of the congressional preference variable

social capital structural holes and the formation of an industry network the formation of a network is determined by the opposition of two forces the first is the reproduction of network structure as a general social resource for network members the second is the alteration of network structure by entrepreneurs for their own benefit the idea of reproduction is a conventional one in organizational sociology but has taken on increased importance due to the work of bourdieu and coleman in contrast burt stresses the entrepreneurship of individual agents in exploiting structural holes that lie between constrained positions though complementary the theories of social capital and structural holes have fundamentally different implications for network formation this paper investigates these theories by examining empirically the formation of the interorganizational network among biotechnology firms we propose that network structure determines the frequency with which a new biotechnology firm or startup establishes new relationships network structure indicates both where soci

choosing organizational modes of strategic technology partnering international and sectoral differences this paper focuses on international strategic technology partnerships and the choice that companies have in terms of the organizational mode either through complex inter organizational modes involving equity sharing or contractual non equity alliances the empirical results show that the choice of particular mode of cooperation varies with the technological characteristics of sectors of industry joint ventures are disproportionately represented in relatively mature industries contractual alliances dominate strategic technology partnering in so called high tech industries

a comparison of the constant order and dual index policy for dual sourcing abstract we analyze a single product periodic review stochastic demand inventory model with backorders and two supply options a regular and a more expensive expedited one with deterministic offsetting lead times since the optimal policy for such a problem is generally unknown several simpler policies have been proposed in the literature e g the single index sip dual index dip or constant order policy cop in previous research the dip has been found to perform closely to the optimal policy in specific numerical settings the cop on the other hand is very appealing from a practical point of view we explore the relative cost performance of these two policies in a numerical study to gain insights into appropriate policy choices we find that in settings where dual sourcing is most valuable the simpler cop delivers satisfactory results sometimes even better ones than the dip and therefore represents a legitimate policy alternative for practical situations

presidential politics budget deficits and monetary policy in the united states 1960 1976 this paper has focused on the extent to which the traditional tools of macroeconomic management in the united states monetary and fiscal policy have contributed to a political business cycle regardless of whether politicians can successfully influence real economic variables to their own ends the evidence presented here suggests that they tried and that they enjoyed some at least indirect aid from their independent monetary authorities in doing so several major conclusions emerge

optimal procurement strategies for online spot markets abstract spot markets have emerged for a broad range of commodities and companies have started to use them in addition to their traditional long term procurement contracts forward contracts in comparison to forward contracts spot markets offer products at essentially negligible lead time but typically command a higher expected price for this added flexibility while also exhibiting substantial price uncertainty in our research we analyze the resulting procurement challenge and quantify the benefits of using spot markets from a supply chain perspective we develop and solve mathematical models that determine the optimal order quantity to purchase via forward contracts and the optimal quantity to purchase via spot markets we analyze the most general situation where commodities can be both bought and sold via a spot market and derive closed form results for this case we compare the obtained results to the reference scenario of pure contract sourcing and we include results for situations where the use of spot markets is restricted to either buying or selling only our approaches can be used by decision makers to determine optimal procurement strategies based on key parameters such as demand and spot price volatilities correlation between demand and spot prices and risk aversion the results of our analysis demonstrate that significant profit improvements can be achieved if a moderate fraction of the commodity demand is procured via spot markets the results also show that companies who use spot markets can offer a higher expected service level but that they might experience a higher variability in profits than companies who do not use spot markets we illustrate our analytical results with numerical examples throughout the paper

the policy preferences of fomc members as revealed by dissenting votes comment the purposes of this comment are to present evidence that casts doubt on several of the conclusions of susan belden s recent paper in this journal 1989 and to suggest directions for future research in this area to begin there is skepticism that dissenting votes at least as belden measures them can be unbiased indicators of policy preferences in addition belden partially recognizes but does not fully specify three influences on federal open market gommittee fomc member voting that are prominently featured in the literature these influences are 1 fomc member training background and career experience 2 state of the economy measures and 3 partisanship measures each of these factors alone may help to explain one of belden s three major findings first the training backgrounds and career experiences of bank presidents may help to explain belden s affirmation of their penchant to dissent from fomc directives on the side of monetary tightness second the state of the economy may help to explain belden s finding of a decline in dissent voting when arthur burns was chairman of the federal reserve third differences between the party of the president and the partisan composition of the board of governors may help to explain belden s discovery of shifts in ease and tightness dissent voting behavior under different chairmen since this comment will indicate how these influences qualify belden s elndings it will at the same time suggest fruitful directions for the research agenda in this area

a brownian approximation of a production inventory system with a manufacturer that subcontracts this paper considers a production inventory problem where a manufacturer fulfills stochastic stationary demand for a single product from a finished goods inventory the inventory can be replenished by two production resources in house production and a subcontractor which both have finite capacity we construct a brownian approximation of the optimal control problem assuming that the manufacturer uses a dual base stock policy to control replenishment from the two sources and that her objective is to minimize average cost a closed form expression is obtained for one optimal base stock policy and an analytical expression is derived from which the other optimal base stock can be computed numerically we show conditions under which the objective is convex in capacity and the unique globally optimal capacity can be computed numerically we thus provide a tractable approximation to the two source problem which is generally intractable we demonstrate the accuracy of this approximation for an m m 1 model we also draw managerial insight from the brownian optimal base stock results into how the optimal base stock policies control the inventory distribution and under what conditions the contingent source is used to build inventory or to resolve backorders

inter firm collaboration and technology development partnerships within us manufacturing industries the paper examines the conditions under which firms enter into technology development partnerships with customers suppliers and other firms three conceptual approaches to inter firm collaboration are examined namely transactions costs theory resource strategy theories of the firm and network theory drawing upon data collected in a mailed questionnaire survey of us manufacturing establishments in the chemical electronics and instruments industries i assess empirically various determinants of inter firm collaboration in technology development the empirical work suggests that large firms and firms located in major urban centres are more likely to enter into technology development partnerships firms located in a specialized industrial agglomeration do not demonstrate a greater propensity toward entering into technology development partnerships with customers suppliers or other firms cet article cherche a examiner les conditions sous lesquelles les entreprises concluent des partenariats technolo

the american political economy macroeconomics and electoral politics here is the most comprehensive and authoritative work to date on relationships between the economy and politics in the years from eisenhower through reagan extending and deepening his earlier work which had major impact in both political science and economics hibbs traces the patterns in and sources of postwar growth unemployment and inflation he identifies which groups win and lose from inflations and recessions he also shows how voters perceptions and reactions to economic events affect the electoral fortunes of political parties and presidents hibbs s analyses demonstrate that political officials in a democratic society ignore the economic interests and demands of their constituents at their peril because episodes of prosperity and austerity frequently have critical influence on voters behavior at the polls the consequences of eisenhower s last recession of ford s unwillingness to stimulate the economy of carter s stalled recovery were electorally fatal whereas johnson s nixon s and reagan s successes in presiding over rising employment and real incomes helped win elections the book develops a major theory of macroeconomic policy action that explains why priority is given to growth unemployment inflation and income distribution shifts with changes in partisan control of the white house the analysis shows how such policy priorities conform to the underlying economic interests and preferences of the governing party s core political supporters throughout the study hibbs is careful to take account of domestic institutional arrangements and international economic events that constrain domestic policy effectiveness and influence domestic economic outcomes hibbs s interdisciplinary approach yields more rigorous and more persuasive characterizations of the american political economy than either purely economic apolitical analyses or purely partisan politicized accounts his book provides a useful benchmark for the advocacy of new policies for the 1990s a handy volume for politicians and their staffs as well as for students and teachers of politics and economics

presidential elections and federal reserve policy an empirical test traditional macro economic models of federal reserve fed behavior typically assume that the fed enjoys a well defined objective function based on social welfare and generally predict counter cyclical monetary policy the increasing observation of procyclical monetary policy has led many researchers to investigate new models of fed behavior several recent papers imply that procyclical fed behavior is due to a lack of political accountability friedman 7 toma 23 and shughart and tollison 21 all attribute considerable bureaucratic discretion to the fed and seek to explain monetary policy by examining typical bureaucratic objectives other papers such as pierce 19 20 weintraub 26 and kane 10 11 argue that the fed operates in an arena filled with political constraints that cause sub optimal monetary policy but these constraints are not modeled explicitly one possible political constraint on fed behavior is the incumbent president s desire for re election in the political business cycle pbc literature presidential re election opportunities are enhanced by the production of a precise set of inflation and unemployment outcomes leading up to the election thus to the extent that presidents desire cyclical macro economic outcomes there will be executive pressure on the fed to create or accommodate such outcomes the effect this pressure will have on fed policy is ultimately an empirical question but most models deal with it by assumption traditional macro modeling assumes a zero effect while the pbc models implicitly assume that a favorable election cycle is a primary goal of all economic policymakers this paper examines presidential influence on the federal reserve by testing for an election cycle in money growth the major result is the identification of a regular 16 quarter cycle in money growth corresponding with presidential elections this cyclical effect is found to be stable over time and significant under a wide range of model specifications further when the cyclical component of money growth is used to simulate a simple macro model it produces a classic political business cycle in inflation and real output growth

tighter bonds customer supplier linkages in semiconductors angel d p 1994 tighter bonds customer supplier linkages in semiconductors reg studies 28 187 200 this paper examines changing linkage relations between high technology firms and their semiconductor suppliers in an effort to improve manufacturing performance and accelerate the pace of technology development high technology firms are establishing closer ties with semiconductor suppliers to date the restructuring of supplier relations has focused primarily upon increasing the flow of information among firms stronger forms of collaboration such as the co development of manufacturing and technological capability are less common the locational effects of tight supplier linkages are weaker than anticipated differing markedly from the intensified regionalization of manufacturing associated with just in time production in the automobile industry angel d p 1994 s agit il des liens plus etroits les relations client fournisseur dans l industrie des semi conducteurs reg studies 28 187 200 c

deficits money and inflation comment abstract this paper re examines the fiscal policy money growth linkage analysed by hamburger zwick 1981 in this journal newly revised national income accounts data are employed unlike hamburger zwick we do not find any strong evidence of a positive federal budget deficit money growth relationship over the period 1961 1974 when the estimation period is extended to 1976 and then to 1978 the results suggest no relationship between deficits and money growth

innovation and cooperation in the small firm sector evidence from northern britain freel m s and harrison r t 2006 innovation and cooperation in the small firm sector evidence from northern britain regional studies 40 289 305 over the last 20 years network based models of innovation led economic development have grown increasingly popular to both the polity and the academy in contrast to earlier linear conceptions innovation is viewed as a systemic phenomenon in which interactive learning and cooperative entrepreneurship are fundamental the way that systems and in turn networks are usually defined is by the volume and characteristics of the linkages that bind them together accordingly drawing upon a recent survey of small firms in scotland and northern england 1347 responses the paper is concerned with mapping the extent of small firm innovation related networking and understanding the unique contribution such networks make to the successful introduction of new products and processes importantly it investigated the impact of networking on innovation in both manu