valuation of dynamic reactive power support services for transmission access competitive procurement of reactive power support services is rapidly becoming a reality for deregulated electricity markets it has resulted in a great need to quantify the value of reactive power support from var sources this article presents research results on the development of new concepts and schemes for equitable reactive power support valuation performance characteristics of the proposed method are determined and practical application issues are addressed the validity of the method is verified through sensitivity studies this work emphasizes that the valuation of reactive power support services should be based on their contributions to system security and stability the dynamic var is the primary concern for the reactive power valuation problem

theoretical approaches to monetary disinflation abstract during the 1980s many countries adopted tight monetary policies to reduce high inflation rates which were the legacy of the 1970s as inflation threatens to rise at the beginning of this decade this paper provides a survey of the 1980s literature which sought to provide theoretical understandings of how monetary disinflation is achieved four models are presented monetarist neo keynesian new classical and post keynesian each model s explanation of the recession which accompanies the monetary disinflation is outlined as well as possible policy measures to reduce the extent of the recession and to hasten the return to full employment

a survey of frequency and voltage control ancillary services part i technical features this two part paper surveys the frequency and voltage control ancillary services in power systems from various parts of the world in this second part essential economic features that must be taken into account when designing markets for ancillary services are first discussed the methods adopted in eight different systems australia france germany great britain new zealand pjm spain and sweden for trading frequency and voltage control ancillary services are then compared lastly new indicators for comparing volumes and costs of ancillary services across systems are proposed and calculated for the systems included in this survey the companion paper surveys the technical features of these ancillary services

coordinated fuzzy constrained optimal power dispatch for bilateral contract balancing electricity and ancillary services markets this paper proposes a coordinated fuzzy constrained optimal power dispatch cfcopd algorithm for bilateral contract balancing electricity and ancillary services markets the cfcopd problem is decomposed into social welfare fuzzy maximization subproblem which is solved by mixed integer fuzzy linear programming miflp and combined reactive power cost and cost of real power loss fuzzy minimization subproblem which is solved by fuzzy linear programming flp the proposed cfcopd algorithm is tested on the modified ieee 30 bus system and the thai power 424 bus system the dispatch results show that the social welfare of the fuzzy constrained competitive electricity and ancillary services price ceasp scheme with bilateral contract curtailment bids is higher than those of competitive electricity price cep scheme and ceasp scheme with and without bilateral contract curtailment bids leading to a lower average electricity price

management ownership and market valuation an empirical analysis we investigate the relationship between management ownership and market valuation of the firm as measured by tobin s q in a 1980 cross section of 371 fortune 500 firms we find evidence of a significant nonmonotonic relationship tobin s q first increases then declines and finally rises slightly as ownership by the board of directors rises for older firms there is evidence that q is lower when the firm is run by a member of the founding family than when it is run by an officer unrelated to the founder

credible threats in a wage bargaining model with on the job search abstract this note shows that in standard equilibrium search models with strategic wage bargaining and on the job search renegotiation does not require mutual consent if the worker needs a credible threat to trigger renegotiation wages are renegotiated less frequently than in the original model

cost benefit reflective distribution charging methodology this paper describes the principle and implementation of a new mw mvar miles charging methodology which was developed to reflect three key cost drivers in distribution network development the distance used to support nodal real and reactive power injection withdrawal the degree of support offered by the network assets and the operating condition of the supporting assets in terms of their power factors the inclusion of the latter driver allows the developed charging methodology to reward network users who are contributing to better power factors and better network utilization while penalizing customers who worsen power factors and network utilization as a consequence the charging model is able to provide forward looking incentives for network customers to behave in a manner to better the network condition which will in turn help to reduce the cost of future network development in addition the separation of real and reactive power pricing would give network users clear indications of the cost of their reactive power draw from the network which in turn could help them to evaluate the economics in investing in reactive power compensation devices the proposed charging methodology is demonstrated on a practical eight busbar distribution system with a mixed demand and embedded generation eg this paper results from work undertaken in a project on distribution charging methodologies for western power distribution the views in this paper expressed are not those of western power distribution

ownership dynamics and asset pricing with a large shareholder we analyze the optimal trading and ownership policy of a large shareholder who must trade off diversification and monitoring incentives without commitment the problem is similar to durable goods monopoly the share price today depends on expected future trades we show that the large shareholder ultimately trades to the competitive price taking allocation even though it entails inefficient monitoring with continuous trading the large shareholder trades immediately to this allocation if moral hazard is weak enough that her private valuation of a share is decreasing in her stake otherwise the large shareholder adjusts her stake gradually we consider implications for asset pricing ipo underpricing and lockup provisions

on managerial contracting with asymmetric information abstract this paper deals with asymmetric information in a two period principal agent model where the agent makes investment decisions after observing a private signal we study the case where the current employer has more information than other prospect employers and the case where the private information is not verifiable by the current employer we analyze the effect of these asymmetries on the wage contracts as well as their interplay

advanced pricing in electrical systems i theory this paper sets forth a comprehensive theory for the real time pricing of electricity that includes selected ancillary services and extends the theory to incorporate constraints on power quality and environment impact that often influence the operation of a power system this paper is part i of a two paper set it sets forth the mathematical development of the extended model for real time pricing the formulation is novel in that it combines the dynamic equations for load frequency control with the static equations of a constrained optimal power flow part ii derives optimal nodal specific real time prices for both real and reactive power the prices derived include additive premia or opportunity costs reflecting the effects of voltage regulation maintenance of generation and transmission reserves regulation of frequency and tie line flows removal and or control of power harmonics and others

an analysis of stock price reaction to management change in distressed firms abstract this study analyzes excess returns to shareholders at announcement of a change in senior management of distressed firms excess returns are significantly positive which is consistent with the internal corporate control hypothesis that management change following poor performance is associated with gains to shareholders cross sectional tests of the effects reveal a significant title effect and significant interactions between title and appointment of an outside successor and title and firm size these findings present new insights into the circumstances in which external vs internal markets for managers will affect shareholder wealth

why u s wage and employment behavior differs from that in britain and japan if a poll were to be conducted among american academic economists to select the most mystifying economic phenomenon of our time surely the sticky nominal wage rate would emerge at or near the top of the list the slow and partial response of the nominal wage rate to changes in aggregate nominal spending has been a central postulate of macroeconomic theory for the past 45 years from keynes general theory down to the standard postwar textbook keynesian paradigm to the more modern fixed wage price models of robert barro and herschel grossman i976 and edmond malinvaud i977 unwilling passively to accept nominal wage rigidity as an unexplained assumption many labour market theorists have followed the lead of costas azariadis i975 and martin baily i974 in building models to explain rigid wages and layoff unemployment as the rational outcome of a profit maximising calculus as i pointed out in an early critique of the azariadis baily model i976a their assumptions cannot explain cycles in employment but rather why workers would want fixed incomes i e a fixed wage rate and fixed employment soon thereafter barro i977 went one step further and argued that contract theory is a facade which cannot explain why workers would choose a rigid wage and variable employment in preference to the classical equilibrium quantity of employment that equates the marginal product of labour with the marginal value of time now an examination of the evidence has led me to the realisation that rigid wages cannot provide the underpinnings for a universally valid theory of the business cycle simply because wages are not universally rigid i document below with postwar quarterly data that the share of fluctuations in the manufacturing wage bill taking the form of nominal wage changes as compared to changes in hours worked is five to ten times greater in britain and japan than in

macroeconomic performance and collective bargaining an international perspective this paper critically reviews the research on how collective bargaining systems influence macroeconomic performance in industrialized countries the review considers effects of bargaining level coordination and corporatist institutional arrangements key empirical results turn out to be quite fragile and much of the paper explores issues of measurement and specification that account for the fragility the paper concludes that complementarities between key institutions and between institutions and the economic environment may be more important for macroeconomic performance than the effects of individual institutions and it suggests research strategies

towards a competitive market for reactive power this paper presents the design of a competitive market for reactive power ancillary services generator reactive power capability characteristics are used to analyze the reactive power costs and subsequently to construct a bidding framework the reactive power market is settled on uniform price auction using a compromise programming approach based on a modified optimal power flow model the paper examines market power issues in these markets and identifies locations where strategic market power advantages are present that need to be removed through investments in reactive power devices

wheeling rates of reactive power flow under marginal cost pricing wheeling is the transmission of electrical power and reactive power from a seller to a buyer through a transmission network owned by a third party the wheeling rate is an area of intense research in view of increased deregulation this paper uses a wheeling rate based on marginal cost pricing and implemented using a modification of the optimal power flow opf a case study based on the ieee 30 bus system illustrates the magnitudes and ranges that wheeling rates might have in different circumstances special attention is paid to reactive wheeling which cannot be analyzed with a dc model used by previous authors the ratio of wheeling rates between real and reactive flow shows the importance of the latter the paper also discusses the significance of this for the trade off between paying for reactive wheel or investing in compensating plant

information incentives and contract timing patterns a prominent feature of wage contracting in the united states is the bunched timing pattern that is often associated with the process of pattern bargaining the model describes the bunching of wage contracts as the equilibrium outcome of decentralized decisions in an economy composed of both competitive and monopolistically competitive product markets agents time their wage adjustment to take advantage of the information associated with the timing decisions of others this information based motive leads to staggered contracting a bunching equilibrium requires the presence of heterogeneous product markets and occurs because the information transmitted by contracting agents differs across the market structures copyright 1990 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

zombie board board tenure and firm performance we show that board tenure exhibits an inverted u shaped relation with firm value and accounting performance the quality of corporate decisions such as m a financial reporting quality and ceo compensation also has a quadratic relation with board tenure our results are consistent with the interpretation that directors on the job learning improves firm value up to a threshold at which point entrenchment dominates and firm performance suffers to address endogeneity concerns we use a sample of firms in which an outside director suffered a sudden death and find that sudden deaths that move board tenure away from toward the empirically observed optimum level in the cross section are associated with negative positive announcement returns the quality of corporate decisions also follows an inverted u shaped pattern in a sample of firms affected by the death of a director

a theory of wage dynamics a dynamic equilibrium model of long term implicit labour contracts under incomplete but symmetric information is developed workers are assumed to be risk averse and of unknown ability or productivity risk neutral firms learn as do workers about each worker s productivity by observing the worker s output over time it is shown that equilibrium contracts provide for wages which never decline with age and increase only when the worker s market value increases above his current wage in addition to characterizing the equilibrium wage contract we also derive some of its implications for the behaviour of aggregate wages across various groups of workers these implications explain some findings in the recent empirical literature on ageearnings profiles in particular our model can explain why earnings may be positively related to experience even after controlling for productivity as some empirical studies have indicated

founders heirs and corporate opacity in the united states abstract we argue that information about firm activities can vary substantially in the presence of founder or heir ownership thereby influencing the risks borne by minority investors we explore two hypotheses with regard to these controlling shareholders and corporate transparency focusing on their role as monitor in place and their potential to exploit firm opacity to accrue private benefits of control to test these notions we create an opacity index that ranks the relative transparency of the two thousand largest industrial us firms and find founder and heir ownership in 22 and 25 of these firms respectively our analysis indicates that in large publicly traded companies both founder and heir firms are significantly more opaque than diffuse shareholder firms we also find that founder and heir controlled firms exhibit a negative relation to performance in all but the most transparent firms surprisingly additional tests reveal that concerns about divergences in ownership versus control management type dual class shares and board influence appear to be substantially less important than corporate opacity in explaining the performance impacts of founder and heir control finally we decompose corporate opacity into disclosure and market scrutiny components finding that the disclosure quality component appears to be of greater importance to investors however irrespective of whether these controlling shareholders create or stay in the firm because of corporate opacity our analysis suggests that founders and heirs in large publicly traded firms exploit opacity to extract private benefits at the expense of minority investors

optimal active reactive power dispatch under competition via bilevel programming this paper proposes an active reactive power dispatch procedure that is expressed via a bilevel optimization problem whose upper and lower level criteria are respectively the minimum opportunity cost and minimum offered price of active power it analyzes the impact of minimizing such criteria on system operation and it investigates the behavior of marginal prices and opportunity costs and their use in mechanisms to compensate generators for power provision the bilevel problem is solved using a version of interior point methods derived for mathematical programs with complementarity constraints results obtained with three test systems are analyzed

do independent director departures predict future bad events following surprise independent director departures affected firms have worse stock and operating performance are more likely to restate earnings face shareholder litigation suffer from an extreme negative return event and make worse mergers and acquisitions the announcement returns to surprise director departures are negative suggesting that the market infers bad news from surprise departures we use exogenous variation in independent director departures triggered by director deaths to test whether surprise independent director departures cause these negative outcomes or whether an anticipation of negative outcomes is responsible for the surprise director departure our evidence is more consistent with the latter

reactive market power analysis using must run indices this paper investigates the issues of reactive power must run capacity in power system operations hence in electricity markets a must run index based method is proposed in the paper to measure the market power held by reactive power suppliers the nordic 32 bus system and the ieee 118 bus system are used to test the proposed method the market power holders of reactive power found using the proposed method are in accord with that found in the realistic nordic system operation and in the existing analysis of ieee 118 bus system the paper identifies through must run indices possible conditions that could lead to market power in the case of applying a bid structure within a market framework furthermore market structure drawbacks can cause the appearance of market power even in a topologically ideal system

a novel cost reducing reactive power market structure for modifying mandatory generation regions of producers abstract in this paper a new reactive power market structure is studied and presented active power flow by itself causes active and reactive losses considering such losses in the reactive power market is the main purpose of this paper therefore this study attempts to improve the reactive power market and create fair competition between producers to that end first a new allocation method for reactive power losses is presented and the contribution of each producer in reactive losses is calculated in the next step this share of losses is used to modify the mandatory generation region of units then a new structure is proposed for the reactive power market this novel structure leads to reduction of system costs in the deregulated power system which is one of the main policy implications of this paper finally simulations show that the total payment by independent system operator will be reduced via application of the proposed methods leading to reduction in system costs this cost reduction will be significant enough to encourage independent system operators to utilize such a structure in addition by implementing the new proposed methods assignment of costs related to reactive power loss will be more justifiable for each generator

turnover in top management and de escalation of commitment we explore how de escalation of commitment is linked to top management turnover and economic changes at the firm escalation of commitment occurs when managers continue investment in a project afte

counterinflationary policy in a unionised economy with nonsynchronised wage setting a model of the determination of wages and employment in a unionised economy with nonsynchronised wage setting is presented in this paper it is shown that a monetary deflation can lead to prolonged unemployment even though the unions act rationally and with full information about the change in policy the model generates a statistical phillips curve in which the rate of change of money wages depends on the anticipated growth rate of the money supply and on disequilibrium unemployment conventional incomes policies are shown to have desirable social effects but run counter to the perceived self interest of the trade unions and are therefore likely to be resisted taxes on wage increases have desirable long run effects but do not appear able to reduce the transitional unemployment costs of monetary deflation

aggregate pattern of time dependent adjustment rules i a game theoretic analysis of staggered versus synchronised wage setting this paper studies the benefits of staggered wage setting in reducing strategic conflicts it is shown that when wage setters interact strategically and dynamically they prefer moving alternatingly because by doing so they are able to commit temporarily not to offset the effects of each other s action it is also shown that synchronization represents a better arrangement when agents are able to coordinate these results are consistent with the presence of nonsynchronous and decentralized wage decisions in the united states and the united kingdom and the presence of synchronous bargaining in shunto and coordination in wage determination in japan copyright 1996 by royal economic society

trade unions wage formation and macroeconomic stability an introduction the process of wage formation is a crucial aspect of the current discussion about the causes of stagflation in fact differences between various policy prescriptions usually depend on differing assumptions about wage responses proposals to reduce unemployment through expansion of monetary demand are usually based on assumptions of rigid money wages in contrast recommendations of non intervention policies often rest on the opposite assumption of rigid real wages in which case monetary expansion will cause inflation but not affect employment

a reactive power capacity market using annual auctions this paper presents a new approach to design reactive power capacity markets under this approach annual auctions to procure reactive power capacity are conducted by the system operator two products are defined reactive power generation and absorption capacity which can be supplied by different independent var sources such as generators svcs capacitor banks and shunt reactors reactive power capacity is allocated using an optimization algorithm that matches capacity bids and system reactive power needs for peak and low demand hours the reactive power requirements are calculated taking into account system contingencies and the dynamic performance of the var sources under these situations another key proposal of the paper is the distribution of costs of the reactive power capacity market to the agents responsible for contingencies according to the use of the service by each market participant this remuneration approach provides fair and efficient economic signals to all market participants the applicability of the approach is illustrated with two case studies

the determination of wages employment and work hours in an economy with centralised wage setting sweden 1950 83 a key component of recent explanations for the growth in unemployme nt in western europe is a negative relation between wage rates and employment this paper examines the evidence for such a relationship for swedish manufacturing industry and also investigates the corresponding movements of hours of work the findings form the ingredients of a structural model of the labor market which is estimated using time series observations from 1951 t o 1983 the greater volatility of employment relative to earnings is measured by a specific parameter which in this model relates to the objectives of trade unions copyright 1988 by royal economic society

oligopolistic competition of gencos in reactive power ancillary service provisions the need for a market based approach for reactive power procurement has been recognized by ferc due to the localized characteristic of reactive power regulatory mechanisms are necessary to mitigate the possibility of holding market power by generators the regulator is responsible for devising the regulatory mechanisms that provide incentives to generators to supply reactive power while preventing the abuse of market power this paper proposes a mathematical model to simulate the strategic behavior of generators supplying reactive power while considering the system operator s schedule the proposed method can be used by the regulator to simulate the market behavior in the reactive power supply we further study how regulatory policies affect the strategic behavior an alternative price cap method has been proposed and tested in the numerical example to mitigate the effect of strategic behavior of generators in reactive power procurement by the system operator the numerical examples are tested on the nordic 32 bus system

staggered vs synchronised wage setting in oligopoly abstract this paper analyses the dynamic equilibrium which emerges when wages are bargained upon at different times in the various firms operating in an oligopolistic industry unions set wages the management of the firms the output level and the outcome of this interaction is captured by the game theoretic concept of markov perfect equilibrium the steady state equilibrium is compared with that which would emerge if all wage negotiations occurred simultaneously it is shown that staggered wage setting leads to higher steady state levels of wage and unemployment than synchronised wage setting it is also shown that a longer duration for wage contracts leads other things equal to lower wages and higher employment the final part of the paper shows that allowing for nash bargaining between union and management and for risk averse unions does not alter the conclusions of the paper

blocks liquidity and corporate control the paper develops a simple model of corporate ownership structure in which costs and benefits of ownership concentration are analyzed the model cornpares the liquidity benefits obtained through dispersed corporate ownership with the benefits from efficient management control achieved by some degree of ownership concentration the paper reexamines the free rider problem in corporate control in the presence of liquidity trading derives predictions for the trade and pricing of blocks and provides criteria for the optimal choice of ownership structure the recent incomplete contracting approach in corporate finance has considerably improved our understanding of how small firms determine their capital structure the basic setting considered in this line of research is one where a founder manager seeks funding from one or several financiers the main premise is that the founder manager in her dealings with the financiers is primarily concerned with maintaining her private benefits of control for small firms these are often quite large relative to the financial returns thus for a small firm the problem of determining the financial structure often reduces to the problem of how to obtain fundingr while giving away as little control as possible to the financiers of course most financiers insist on some form of protection so that the final compromise reached in most financial contracts for small firms is one resembling a debt contract or a venture capital contract which protects the founder manager s control as long as the firm is performing adequately this perspective for small firms does not extend naturally to large firms because the private benefits of control of the managers for large firms are likely to be small relative to the firm s monetary returns so that protection of these benefits is not an overriding consideration moreover large firms

ownership concentration corporate control activity and firm value evidence from the death of inside blockholders we analyze how ownership concentration affects firm value and control of public companies by examining effects of deaths of inside blockholders we find shareholder wealth increases ownership concentration falls and extensive corporate control activity ensues share price responses are related to the deceased s equity stake control group holdings fall for two thirds of the firms due to either the estate s dispersal or inheritors selling stock a majority of firms become targets of control bids three quarters of bids are successful one third are hostile our evidence is broadly consistent with stulz s 1988 model of the relationship between ownership concentration and firm value the objective of this paper is to assess how changes in insider ownership concentration affect firm value corporate governance and the control of public companies we obtain our evidence on these issues by examining the effects of the death of an inside blockholder that is a member of the firm s control group as defined by securities and exchange commission sec disclosure rules who holds 5 percent or more of a firm s equity overall we find that the death of an inside blockholder an exogenous event is value enhancing reduces ownership concentration and leads to extensive corporate control activity our analysis has three components one we use market based evidence to evaluate how changes in ownership concentration affect firm value by analyzing the share price response to the death of an inside blockholder financial market efficiency implies that share prices capitalize gains or losses from changes in ownership concentration and future control events expected to ensue from an inside blockholder s death thus such valuation effects provide a test of the continuing controversy as to whether ownership concentration promotes managerial entrenchment or aligns insider and noninsider interests we find that the share price response to the death of an inside blockholder is significantly positive when the level of ownership concentra

wheeling of power under deregulated environment of power system a bibilographical survey the power industry is moving rapidly from regulated conventional setup to a deregulated environment there is an urgent need to keep a track of international experiences and activities taking place in this emerging field this paper gives a bibliographical survey and general backgrounds of research and development in the field of power system wheeling under deregulated environment based on over 170 published articles wheeling in general and the establishment of wheeling rate in particular are subjects of extensive debate today this will be very much useful for all countries especially those developing countries which are moving toward the unbundling of electricity supply industry esi the collected literature have been divided into many section so that new researchers do not face any difficulty for obtaining literature particularly in the area of wheeling of power under deregulated environment

reactive power as an ancillary service this paper addresses the problem of reactive power procurement by an independent system operator iso in deregulated electricity markets a reactive bid structure is proposed in the context of a reactive power market based on the reactive power price offers and technical constraints involved in reactive power planning a two tier approach is developed to determine the most beneficial reactive power contracts for the iso the reactive capability of a generator and therefore the opportunity costs in providing reactive power is also included in the model uncertainty in reactive demand and in reactive bids of participating parties is incorporated through monte carlo simulations and the expected reactive power procurement plan for the iso is hence determined the cigre 32 bus network approximately representing the swedish system is used for the studies

the costs of wheeling and optimal wheeling rates wheeling is the transmission of electrical energy from a buyer to a seller through a transmission network owned by a third party this paper provides a theoretically sound yet practical to implement basis for setting wheeling rates these wheeling rates are based on marginal costs determined by losses and effects of line flow and voltage magnitude constraints adjusted up or down as necessary to account for embedded capital costs i e revenue reconciliation simple numerical examples are provided to illustrate interesting phenomena such as negative wheeling rates which yield positive net revenue comparisons with present day wheeling rates show that major differences exist the wheeling rates of this paper yield a no lose situation for the buying selling and wheeling utilities

a method for simulation and analysis of reactive power market this paper presents a method for the simulation and analysis of alternative reactive power market arrangements based on combined reactive power capacity and energy payments the value of reactive power support in terms of both capability and utilisation of each particular generator is quantified using a developed security constrained reactive optimal power flow the relative competitiveness of participating generators is also assessed for a spectrum of arrangements between a reactive capacity and a reactive utilisation based market also the conflicting objectives of the system operator as a purchaser of reactive power service and generators as suppliers of the services are analysed

an investigation on the reactive power support service needs of power producers reactive power is an important system support service in the current power market power producers or generators have the opportunity to offer this service to make a profit given the fact that a generator needs reactive power to transmit its own active power however it is possible that certain generators cannot support a system even if they are generating reactive power this paper investigates such a phenomenon and proposes a method to determine the minimum amount of reactive power q sub min required for a given generator if a generator cannot supply this minimum amount it actually draws reactive power support from the system to facilitate its own active power selling activity compensation to a generator s reactive power output should be made only to the amount that is above the q sub min amount the proposed ideas are illustrated with simple systems in this paper and tested on a real life power system the test results verified the validity of the proposed concept and method

an analysis of the stock price reaction to sudden executive deaths implications for the managerial labor market abstract certain characteristics of managerial employment arrangements and of the managerial labor market make shareholder wealth dependent on an executive s continued employment these wealth effects are investigated by examining the common stock price reaction to unexpected deaths of senior corporate executives abnormal stock price changes are documented for a sample of fifty three events these abnormal stock price changes are associated with the executive s status as a corporate founder and with measures of the executive s talents and decision making responsibility and of the transaction costs associated with renegotiating or terminating the employment agreement

managers with and without style evidence using exogenous variation in a large panel of compustat firms we find that firm policy changes after exogenous ceo departures do not display abnormally high levels of variability casting doubt on the presence of idiosyncratic style effects in policy choices after endogenous ceo departures we do detect abnormally large policy changes these changes are larger when the firm is likely to draw from a deeper pool of replacement ceo candidates suggesting the presence of causal style effects that are anticipated by the board our evidence suggests that managerial styles are not transferred across employers and that standard f tests are inappropriate for identifying style effects the author 2013 published by oxford university press on behalf of the society for financial studies all rights reserved for permissions please e mail journals permissions oup com oxford university press

wage interdependence through decentralized bargaining abstract the idea that sector specific unions are influenced by the wages obtained by other unions has mainly been used to support the empirical observation that wages are highly correlated among industries the sources of wage interdependence can mainly be found in unions preferences in the nature of technology and in price and demand determination the presence of externalities and of strategic complementarity among unions leads to suboptimal equilibria which generates non desired inflation unemployment and possibly also trade balance deficit this enforces the idea that part of current unemployment can be eliminated by improving the cooperation between social actors

entrenchment governance and the stock price reaction to sudden executive deaths abstract to study managerial entrenchment i use the stock price reaction to unexpected senior executive deaths if a highly effective manager dies unexpectedly the stock price reaction should be negative if however death removes an entrenched manager when the board would or could not the stock price reaction should be positive while individually age and tenure only weakly correlate with the stock price reaction to a sudden death the reaction is strongly positive 6 8 if 1 the executive s tenure exceeds 10 years and 2 abnormal stock returns over the last three years are negative

enterprise performance and management turnover in the czech republic abstract we study the effect of management turnover on changes in enterprise performance using a cross section of 706 czech firms over the 1993 1997 period controlling for initial conditions equity holdings by managers and firm and sector specific effects we find that the appointment of new managers is associated with improvements in profit margins and labor productivity particularly if those managers were selected by private owners the results highlight the importance of human capital in transition economies in bringing about improvements in corporate performance

inside the family firm the role of families in succession decisions and performance this paper uses a unique dataset from denmark to investigate the impact of family characteristics in corporate decision making and the consequences of these decisions on firm performance we focus on the decision to appoint either a family or an external chief executive officer ceo the paper uses variation in ceo succession decisions that result from the gender of a departing ceo s first born child this is a plausible instrumental variable iv as male firstchild firms are more likely to pass on control to a family ceo relative to female first child firms but the gender of a first child is unlikely to affect firms outcomes we find that family successions have a large negative causal impact on firm performance operating profitability on assets falls by at least four percentage points around ceo transitions our iv estimates are significantly larger than those obtained using ordinary least squares furthermore we show that family ceo underperformance is particularly large for firms in high growth industries and for relatively large firms overall the empirical results demonstrate that professional non family ceos provide extremely valuable services to the organizations they head

union wages temporary lay offs and seniority it is widely believed that the seniority system in conjunction with the collective bargaining process contributes significantly to the determination of the unemployment level in unionized sectors causa i empiricism suggests that real wage demands often remain buoyant in these sectors in the face of seemingly high rates of unemployment among union members james medoff 1979 p 380 convincingly documents the evidence that adjustment through lay offs is substantially greater in unionized firms than in comparable non unionized firms the usual but somewhat informal explanation is that the outcome of union voting is greatly influenced by senior workers who are fairly certain that they will not be laid off when normal shifts in the industry s demand for labour occur 2 these inframarginal workers are believed to vote for higher wage settlements than they would if their own jobs were not so secure

stochastic multiobjective market clearing of joint energy and reserves auctions ensuring power system security in this paper a stochastic multiobjective framework is proposed for day ahead joint market clearing the proposed multiobjective framework can concurrently optimize competing objective functions including augmented generation offer cost and security indices overload index voltage drop index and voltage stability margin besides system uncertainties including generating units and branches contingencies and load uncertainty are explicitly considered in the stochastic market clearing scheme the solution methodology consists of two stages which firstly employs roulette wheel mechanism and monte carlo simulation mcs for random adaptive 24 h scenario generation wherein the stochastic multiobjective market clearing procedure is converted into its respective deterministic equivalents scenarios in the second stage for each deterministic scenario a multiobjective mathematical programming mmp formulation based on the epsiv constrained approach is implemented for provision of spinning reserve sr and nonspinning reserve nsr as well as energy the mmp formulation of the market clearing process is optimized while meeting ac power flow constraints and expected interruption cost eic the ieee 24 bus reliability test system rts 24 bus is used to demonstrate the performance of the proposed method

three theorems on inflation taxes and marginal employment subsidies most western nations are now experiencing high levels of unemployment traditional economic policies have apparently either helped to produce this or have not been able to eliminate the problem thus some economists have tried to suggest new ways in which governments might intervene in the labour market to raise the equilibrium level of employment two of the most widely known schemes are i taxes on inflation and ii marginal employment subsidies this paper examines the microeconomic effects of these policies one of the most fundamental points in the paper is that of the formal similarity between an inflation tax and a subsidy on marginal employment both work to raise the long run level of employment by changing the cost of adjusting from one short run equilibrium to another an inflation tax imposes a fine on firms or workers when wage rates rise too fast its aim is to reduce wages and so raise employment a marginal employment subsidy is designed to reward firms or workers when employment rises quickly its purpose too is to increase the level at which employment will be in equilibrium technically then these are both examples of the same sort of analytical problem each one requires that the relevant decision maker bear in mind that his life time utility depends on how quickly he alters his present behaviour each in other words is a problem in the calculus of variations not one in simple calculus there is now quite a large literature on the case for an inflation tax although it dates back at least twenty years the idea has become topical because of the work of richard jackman and richard layard most notably in layard

the price of government ownership a study of the domtar takeover abstract this paper presents an analysis of how government ownership of an enterprise may affect its profitability in august 1981 two quebec crown corporations announced that they had gained control of domtar a private canadian corporation upon receipt of this information the stock s market value dropped significantly over six trading days domtar s shareholders suffered cumulative abnormal returns of minus 25 percent which is equivalent to a reduction in market value of approximately 150 million much of this loss can be attributed to government control and the anticipated pursuit of non profit objectives

equilibrium long term labor contracts the paper presents a labor market equilibrium analysis of implicit contract theory a two period single good model is used to propose consistent notions of labor market equilibrium for long term employment contracts both when labor is specialized and cannot move in the second period and when there is free mobility without costs the result that long term contracts emerge in equilibrium even without mobility costs is novel and contrary to common beliefs the main features of equilibrium are that risk neutral firms will insure risk averse workers against downside risk yielding downward rigid wages wages are not fully rigid as in earlier work on contract theory because workers may quit and wages have to be bid up to retain them the firm gets its return of the insurance deal by paying less than marginal product in the first period the resulting equilibrium is second best and lies between productive efficiency and full insurance workers gain from long term contracts in comparison to spot markets whereas owners may not in the model with specialized skills there exist transfer payments such that both parties are better off within an equilibrium with long term contracts

localized reactive power markets using the concept of voltage control areas in this paper we present the design of a localized competitive market for reactive power ancillary services at the level of individual voltage control areas the concept of electrical distance has been used to identify the different voltage control areas within a power system the proposed reactive power market is settled on uniform price auction using a modified optimal power flow model uniform prices for various components of reactive power service are obtained for each voltage control area in the study cases described in the paper we examine whether such a localized reactive power market is more desirable than a common system wide reactive power market

political economy of mechanisms we study the optimal mirrlees taxation problem in a dynamic economy in contrast to the standard approach where the taxation mechanism is operated by a benevolent planner with full commitment power we focus on economies in which policy decisions are made by self interested politicians who cannot commit to policies the society controls politicians using elections we show that the provision of incentives to politicians can be partly separated from redistribution across agents and that political economy constraints can be modeled as introducing additional aggregate distortions in the dynamic mirrlees problem we provide conditions under which the political economy distortions persist or disappear in the long run if the politicians are as patient as the agents the best sustainable mechanism leads to an asymptotic allocation where the aggregate distortions arising from political economy disappear in contrast when politicians are less patient than the citizens positive aggregate labor and capital taxes remain even asymptotically we conclude by providing a brief comparison of centralized

persistence of politicians and firms innovation we empirically investigate whether the persistence of politicians in political institutions affects the innovation activity of firms we use 12 000 firm level observations from three waves of the italian observatory over small and medium enterprises and introduce a measure of political persistence defined as the average length of individual political careers in political institutions of italian municipalities standard ols shows no raw correlation between political persistence and firms innovation activity however once the causal effect is isolated by means of instrumental variables using death of politicians as an exogenous source of variation of political persistence we find a robust negative relation between political persistence and the probability of process innovation this finding is consistent with the view that political stability may hinder firms incentive to innovate to maintain their competitiveness as long as they can extract rents from long term connections with politicians

opf for reactive pricing studies on the ngc system retail transmission services like those being provided by the national grid company ngc in england and wales pose new challenges for the pricing of reactive power supply a reactive power market approach has been proposed by ngc and continues to be evaluated such an approach includes a novel requirement for transmission constrained economic dispatch of var a problem in the security constrained optimal power flow opf class the problem formulations handled by the opf package in use could not accommodate ngc s requirements this paper describes the reactive pricing problem being addressed the modeling requirements and the resulting extensions made to the opf formulation and package it discusses the test results obtained to date on the ngc system

credibility of policy announcements the output and inflation costs of disinflationary policies abstract the paper analyses the credibility problem related to policy announcements specifically the incentives related to announcements of disinflationary policies are considered and conditions are given for credible and non credible announcements moreover the implications for output and inflation of a non credible disinflationary policy are analysed

from a bundled energy capacity pricing model to an energy capacity ancillary services pricing model in this paper we extend the chilean power generation pricing mechanism with capacity and energy payments to one where ancillary services as as frequency regulation and voltage control are explicitly recognized adequacy and security attributes of the electric system and the public good characteristics of as are set within the payment structure to distribute the financing of as among those who benefit from their provision the contribution to finance the provision of as is determined assessing the value assigned to the system security by each agent following what s an efficient pricing mechanism in the presence of public goods