NATO Science Series B: – serie

In the treatment of marital problems, behaviorally oriented and com­ munication oriented approaches have been in conflict and seen as con­ trasting and unlikely bed partners. Many therapists, focusing on com­ munication skills, have felt that behaviorists were too structured and uncaring; on the other hand, behaviorists have considered humanistic therapists as being "touchy-feely," vague, and unfocused. However, in the Handbook of Marital Therapy, Liberman, Wheeler, de Visser, and the Kuehnels have wedded these two potent approaches into an inte­ grated framework that makes them loving bed partners. With over a decade of experience in applying behaviorally ori­ ented treatment to couples, Liberman and his co-authors have devel­ oped an educational model that focuses on teaching specific commu­ nication skills to couples. The communication skills they describe have been used extensively in all types of marital therapy, regardless of the therapist's theoretical orientation. The unique contribution of this book is that the authors provide a step-by-step approach to teaching these communication skills within a behavioral framework. Each chapter guides the therapist through the many issues and problems confronting him or her as a change agent. This highly readable book is enhanced by a liberal use of case exam­ ples. Emphasis is given to homework and structured sessions that focus on increasing specific communication skills in a sequential manner. The advantages of working with couples in a group setting are dis­ cussed, and concrete suggestions on how to manage these groups are clearly presented.

The Advanced Study Institute on "Theoretical Aspects and New Developments in Magneto-Optics" was held at the University of Antwerpen (R.U.C.A.), from July 16 to July 28, 1979. The Institute was sponsored by NATO. Co-sponsors were: Agfa-Gevaert (Belgium), A.S.L.K. (Belgium), Bell Telephone Mfg. CO. (Belgium), Esso Belgium, Generale Bankmaatschappij (Belgium), General Motors (Belgium), I.B.M. (Belgium), Kredietbank (Belgium), Metallurgie Hoboken-Over­ pelt (Belgium), National Science Foundation (U.S.A). A total of 60 lecturers and participants attended the Institute. Scope of the Institute The magneto-optic phenomena are due to the change of the polarizability of a substance as a result of the splitting of the quantized energy bands. Most of these phenomena were discovered during the second half of this century. The understanding of the magneto-optical effects of all kinds, however, was brought by the advent of quantum mechanics, and since then important progress has been made in many fields of experimental methods and techniques.

Until recently, the field of atomic and molecular collisions was left to a handful of practitioners who essentially explored it as a branch of atomic physics and gathered their experimental re­ sults mainly from spectroscopy measurements in bulk. But in the past ten years or so, all of this has dramatically changed, and we are now witnessing the rapid growth of a large body of research that encompasses the simplest atoms as well as the largest mole­ cules, that looks at a wide variety of phenomena well outside purely spectroscopic observation, and that finds applications in an unexpectedly broad range of physico-chemical and physical pro­ cesses. The latter are in turn surprisingly close to very important sectors of applied research, such as the modeling of molecular lasers, the study of isotope separation techniques, and the energy losses in confined plasmas, to mention just a few of them. As a consequence of this healthy state of affairs, greatly diversified research pathways have developed; however, their specialized problems are increasingly at risk of being viewed in isolation, although they are part of a major and extended branch of physics or chemistry. This is particularly true when it comes to the theory of this work -- where well-established methods and models of one subfield are practically unknown to researchers in other subfields -- and, consequently, the danger of wasteful duplication arising is quite real.

The NATO Advanced Study Institute on Quantum Electrodynamics of Strong Fields was held at Lahnstein on the Rhine from 15-26 June, 1981. The school was devoted to the advances, theoretical and exper­ imental, in the physics of strong fields made during the past decade. The topic of the first week was almost exclusively quantum electrodynamics, with discussions of symmetry breaking in the ground state, of the physics of heavy ion collisions and of precision tests of perturbative quantum electrodynamics. This was followed in the second week by the presentation of a broad range of other areas where strong fields occur, reaching from nuclear physics over quantum chromodynamics to gravitation theory and astrophysics. We were fortunate to be able to call on a body of lecturers who not only have made considerable personal contributions to these advances but who are also noted for their lecturing skills. Their dedication for their subject was readily transmitted to the stu­ dents resulting in a very successful school. This enthusiasm is also reflected in their contributions to these Proceedings which, as I believe, will in time become a standard source of reference for future work on the physics of strong fields and will help to spread the benefits of the school to a larger audience than those who were able to attend. I regret that the Soviet colleagues Ya. B. Zeldovich and V. S. Popov were unable to participate.

The 1981Cargese Summer Institute on Fundamental Interactions was organized by the Universite Pierre et Marie Curie, Paris (M. LEVY and J.-L. BASDEVANT), CERN (M. JACOB), the Universite Catholique de Louvain (D. SPEISER and J. WEYERS), and the Katholieke Universiteit te Leuven (R. GASTMANS), which, like in 1975, 1977 and 1979, had joined their efforts and worked in common. It was the 22nd Summer Institute held at Cargese and the 6th one organized by the two institutes of theoretical physics at Leuven and Louvain-la-Neuve. This time, while the last school was dominated by the impres- sive advances which were made in the field of perturbative quantum chromodynamics and its applications to high energy phenomena invol- ving strongly interacting particles, the 1981 school clearly reflected a period of transition, where the new insights gained by experiment and theory are digested and put in order. Place of pride among the experiments belonged this time to DESY. On the theore- tical side the reader will find a more thorough interpretation and understanding of the experiments as well as approaches to new theories. Finally several talks were devoted to experiments of the future.We owe many thanks to all those who have made this Summer Institute possible! Thanks are due to the Scientific Committee of NATO and its President for a generous grant and especially to the head of the Advanced Study Institute Program, Dr. R. Chabbal and his collabora- tors for their constant help and encouragements.

The purpose of this book is to provide readers with sufficient knowledge regard­ ing social skills assessment and training with children so that they can imple­ ment and evaluate social skills programs on their own. Increased interest in promoting children's social skills has stemmed in part from advances in research that have shown the importance of childhood social competency for adjustment in both childhood and adulthood. There is a growing need for assessment and training methods that can be utilized by diverse groups of professionals and paraprofessionals. This book is intended for mental health workers, teachers, educators, clinicians, and child-care personnel. The book thoroughly reviews the literature to acquaint readers with relevant findings on social skills and to pro­ vide discussion regarding contemporary issues and assessment techniques. Sub­ sequently, comprehensive procedures in the training of children's social skills are presented. Readers are also provided with 16 detailed training modules, each of which comprises a rationale, instructions, Scripts, and homework assign­ ments. These modules are designed to permit effective implementation of social skills training programs. Moreover, they provide a structured and program­ matically designed format that builds in clinical flexibility for their use with individual children or groups of children. These modules are followed by a clinical-issues section designed to address potential obstacles to effective training. Following these major sections, two appendixes have been included in the book. The first appendix is a step-by-step description of how to conduct an assessment.

Recent estimates (Hallahan & Kauffman, 1978) indicate that over 4. 7 million children, 7.3% of the child population under the age of 19, are labeled emotionally disturbed, mentally retarded, or learning-disabled. Moreover, many of these children remain unserved or are inadequately served. The past decade has produced an increasing concern with the mental health needs of these children and their families. This trend had as much impact in behavior therapy as it did in any other branch of the helping professions. Behavioral work with children, with its emphasis on skill development and environmental modification, helped to build into child psychotherapy a true preventive mental health orientation. The ease of delivery and application of behavioral procedures allowed parents and other caregivers to become meaningfully involved in the clinical process, and so facilitated therapy gains and the maintenance and generalization of those gains. Perhaps the most significant change in behavior therapy in the 1970s was the move beyond interventions derived strictly from learning theories to applications based on knowledge from a variety of psycho­ logical research areas. The cognitive mediational activities of the client have received special attention, and this book presents the conceptual, methodological, and clinical issues in contemporary cognitive behavior therapy with children.

This book developed out of the editors' longstanding interest in the retraining of traumatically brain-damaged adults and the management of their behavior by family members. A search for relevant experimental evidence to support the clinical use of behavioral principles for retrain­ ing, which began in 1977, turned up little empirical support. Moreover, the literature on retraining was dispersed among a variety of journals published in various countries. Nowhere was there a compendium of literature that addressed issues of assessment and retraining. There was no place to turn if one wanted to move from a standard neuropsy­ chological evaluation to the retraining of skill deficits revealed in the evaluation. We have attempted to edit a book that represents what we had hoped to find in the literature and could be used by professionals in clinical psychology, clinical neuropsychology, rehabilitation medicine, physical therapy, speech therapy, and other disciplines that address rehabilitation of brain-damaged adults-a book that addresses assess­ ment and rehabilitation issues and is sufficiently detailed to offer the reader a starting point in developing behavioral assessment and re­ habilitation programs. The book contains conceptual foundations, re­ views of research, descriptions of successful rehabilitation programs, and relatively detailed approaches to the retraining of specific skills. A shift from an assessment-based practice to one encompassing both prescriptive assessment and treatment has become a recognized transition in the neuropsychological literature and was best articulated in an article by Gerald Goldstein in March of 1979.

This volume contains the Proceedings of the NATO Advanced Study Institute "Quantum Optics and Experimental General Relativity" which was held in Bad Windsheim, Federal Republic of Germany, from August 16 to 29, 1981. At first glance, one might wonder why a meeting should cover these two topics, and a good bit of quantum measurement theory as well, all of which seem to be completely unrelated. The key to what one may call this grand unification lies in the effort, underway in a number of laboratories around the world, to detect gravitational radiation. Present research is pursuing the development of two types of detectors: laser interferometers and resonant bar detectors. Be­ cause the signals that one is trying to measure are so weak the quan­ tum mechanical nature of the detectors comes into play. The analy­ sis of the effects which result from this is facilitated by the use of techniques which have been developed in quantum optics over the years. This analysis also forces one to confront certain issues in the quantum theory of measurement. The laser interferometer detectors, using as they do light, are clearly within the realm of subjects usually considered by quantum optics. For example, the analysis of the noise present in such a de­ tector can make use of the many techniques which have been developed in quantum optics.

Atomic transport in solids is a field of growing importance in solid state physics and chemistry, and one which, moreover, has important implications in several areas of materials science. This growth is due first to an increase in the understanding of the fund­ amentals of transport processes in solids. Of equal importance, however, have been the improvements in the last decade in the experi­ mental techniques available for the investigation of transport phenomena. The advances in technique have stimulated studies of a wider range of materials; and expansion of the field has been strong­ ly encouraged by the increasing range of applied areas where transport processes play an essential role. For example, mass transport phenomena play a critical role in the technology of fabrication of components in the electronics industry. Transport processes are involved both during the fabrication and operation of devices and with the growing trend to miniaturisation there are increasing demands on accurate control of diffusion processes. The present book (which is based on a NATO sponsored Advanced Study Institute held in 1981 at Lannion, France) aims to present a general survey of the subject, highlighting those areas where work has been especially active in recent years.

The object of this NATO Advanced Study Institute was to pre­ sent a tutorial 'introduction both to the basic physics of recent spectacular advances achieved in the field of metrology and to the determination of fundamental physical constants. When humans began to qualify their description of natural phenomena, metrology, the science of measurement, developed along­ side geometry and mathematics. However, flam antiquity to modern times, the role of metrology was mostly restricted to the need of commercial, social or scientific transactions of local or at most national scope. Beginning with the Renaissance, and particularly in western Europe during the last century, metrology rapidly developed an international character as a result of growing needs for more accurate measurements and common standards in the emerging indus­ trial society. Although the concerns of metrology are deeply rooted to fundamental sciences, it was, until recently, perceived by much of the scientific community as mostly custodial in character.

Psychotherapy research is undoubtedly one of the most puzzling, diverse, com­ plex, controversial, and multidimensional areas tackled by clinical psycholo­ gists, psychiatrists, and psychiatric social workers. The numerous theoretical, methodological, and clinical-research issues dealt with by workers in the field have increased exponentially in the past three decades. To do full justice to the area, monographs in each of the specific subareas would be warranted. In this volume, we, as editors, have endeavored to present the student and interested professional and practitioner with an understanding of the most salient issues and trends confronted by the psychotherapy researcher. In order to accomplish this task, we asked our colleagues, who are experts in their respective areas, to share their current thinking with us and with you, the read­ ers. Thus, many theoretical viewpoints are represented, with none having a monopoly over the others. This is as it should be, given the data collected by clinical researchers at this time. We have also attempted to capture the excite­ ment that has permeated the field in the past 30 years or so.

During the past ten years, the problem of child abuse has been the subject of increased attention both in the professional community and among the general public. The reasons for this widespread recogni­ tion are clear. First, professionals of many disciplines deal with child­ abusive families and do so in a variety of ways: Physicians, hospital staff, and teachers are often the first to assess a child as the victim of abuse; social workers and child-protective personnel investigate cases of suspected abuse; court and legal authorities make determinations concerning the needs of an abused child; and mental health profes­ sionals, including psychologists, social workers, and family coun­ selors, often have responsibility for treating abusive families. Few clinical problems have received this kind of widespread interdisci­ plinary recognition and, given the nature and seriousness of child­ abusive behavior, few problems receive such intensive attention within each profession's literature. A second factor responsible for increased study of child abuse is the fact that violence directed toward children is probably the most extreme form of family dysfunction seen by counselors, therapists, and other practitioners. While other types of child-management and anger-control problems occur far more frequently, the consequences of child-abusive behavior are much more serious than the conse­ quences of other problems seen in child or family clinics. It has been v vi PREFACE estimated that as many as 550,000 children are the targets of parental abuse in the country each year (Helfer & Kemper, 1976).

The Advanced Research Workshop (ARW) on Condensed Matter Re­ search Using Neutrons, Today and Tomorrow was held in Abingdon, Oxfordshire for four days beginning 26 March 1984. The Workshop was sponsored by NATO and the Rutherford Appleton Laboratory. A total of 32 lecturers and participants attended. An objective of the Workshop was to review some dynamic proper­ ties of condensed matter that can be studied using neutron spectros­ copy. A second objective, no less important, was to identify new topics that might be investigated with advanced spallation neutron sources. The twelve lectures reproduced in this volume bear wit­ ness, largely by themselves, to the success of the Workshop in meet­ ing these objectives. The many discussions generated by lecturers and participants meant that, in the event, the objectives were in­ deed amply satisfied. I should like to thank all those who attended the Horkshop for their part in making it so beneficial and rewarding. I am most grateful to Reinhard Scherm, who acted as my advisor in the organisation of the Workshop. The efforts of Mrs. M. Sherwen and Miss J. Harren made light my burden of administrative duties. The preparation of the manuscript for publication was simplified by the assistance of Miss C. Monypenny.

The ASI Quarks, Leptons and Beyond, held in Munich from the 5th to the 16th of September 1983 was dedicated to the study of what we now believe are the fundamental building blocks of nature: quarks and leptons. The subject was approached on two levels. On the one hand, a thorough discussion was given of the status of our knowledge of quarks and leptons and their interactions, both from an experi­ mental and a theoretical standpoint. On the other hand, open problems presented by the so called standard model of quark and lepton interact­ ions were explored along various ways that lead one beyond this frame­ work. One of the principal predictions of the standard model is that weak interactions are mediated by heavy Wand Z vector bosons. These particles were discovered in 1983 at CERN and their relevant proper­ ties were discussed at the ASI by C. Rubbia. Further theoretical predictions concerning these Z and W bosons, yet to be checked by future experimentation, were discussed by G. Altarelli with a view of seeing where the standard model might fail and new physics ensue. The strong interactions of quarks, based on Quantum Chromodynamics (QeD), are presumed to cause the quarks to bind into hadrons. Pro­ gress in attempts to calculate the observed hadronic spectrum, ab initio, starting from QCD and employing lattice methods were reviewed at the ASI by P. Hasenfratz.

It is well known that behavior problems are a salient characteristic of children and adults with mental retardation. That is not to say that all persons with mental retardation experience behavior disorders; how­ ever, most studies indicate that the incidence of emotional disturbance in this population is four to six times greater than that observed in similar intellectually nonhandicapped children and adults. It is equally well known that the principal form of treatment accorded clients with mental retardation and behavior disorders is pharmacotherapy or the prescrip­ tion of behavior modifying drugs. Recent studies show that 6 out of every 10 individuals with mental retardation have been prescribed drugs as treatment for disorders of emotion or behavior. Unfortunately, further studies indicate that only one or 2 out of every 10 clients receiving medication are determined to be "responders," such that some thera­ peutic benefit is derived from their drug treatment. As noted by the title, the single major thrust of this volume is to review approaches to the treatment of behavior disorders in persons with mental retardation from a nondrug perspective. This requires the presentation of a wide range of material on treatment: basic behavior modification programming, cognitive-behavioral strategies, habilitative approaches, counseling and psychotherapy, designing therapeutic living environments, managing medical factors bearing relevance to emotional illness, intervening with families, training special education teachers and direct care staff, and supplying information on the client's rights to obtain treatment in the least restrictive and least intrusive manner.

In the case of metallic systems, there were early indications that metallic glasses and disordered alloys may be more corrosion resistant, less susceptible to embrittlement by hydrogen and have a higher hydrogen mobility than ordered metals or intermetallics.

Throughout the past 30 years, there have been significant developments in theory and research relating family variables to various psychopathologies. The potential importance of such efforts is obviously great, given the implications that reliable and valid findings would hold for treatment and preventive inter­ ventions across a variety of settings and populations. The purpose of this volume is to present a critical evaluation of this field of inquiry through a detailed assessment of the theoretical perspectives, the methodological issues, and the substantive findings that have characterized family studies of psychopathology during the past several decades. The book is divided into four parts, each con­ taining contributions from leading researchers and theorists in the field. The first part, "Background," presents a review of the major streams of influence that have shaped the development and the present character of the field. The second part, "Conceptual Foundations," contains presentations of gen­ eral models and orientations relevant to family studies of psychopathology. In most cases, a particular theoretical perspective provides the primary underpin­ ning of the approach, the exception to this format being the family model of David Reiss based on the concept of the family paradigm. The major objective of this part is to present a broad yet detailed set of chapters that address the conceptual status of the field. It is hoped that this material will provide a rich background against which subsequent discussions of specific theories, methods, and findings can be more fully appreciated.

Atomic Physics is certainly the oldest field in which Quantum Mechanics has been used and has provided the most significant proofs of this new theory. Most of the basic concepts, except those more recently developed in field quantization, have been understood for quite a time. Atomic Physics began to serve as a basis for other fields such as molecu­ lar, solid state or nuclear physics. A renewal of interest in Atomic Physics began in the sixties, after the discovery of Quantum Electro­ dynamics, and later when it provided some basic tests of fundamental questions like parity violation, time reversal or Dirac theory. More recently the development of new technologies led to the ex­ ploration of very extreme cases in which the most secrete aspects of atoms have been observed. - Rydberg states where the atoms are so big that they can be described by classical theories; - Heavy or super-heavy ions or exotic atoms where unknown QED or relativistic effects can be observed (very heavy hydrogenlike or helium­ like ions, positron production in very violent collisions ••. ); - Huge external perturbations as those appearing in super-dense plasmas or ultra-high fields. The aim of this school was to gather atomic physicists from all over the world working in all these areas of Atomic Physics.

One of the most important practical problems in child psychology and psychia­ try is the differential diagnosis of emotional disorders. Until recently, the gener­ al mode of assessment had been to apply to children the characteristics of psychopathology that were evident in adults. In addition, there had been few assessment tools available for use with children aside from modified versions of adult instruments. Understandably, this approach was controversial, and dissat­ isfaction with it led to the more recent knowledge that adult and child problems may be manifested quite differently. The third edition of the Diagnostic and Statistical Manual of Mental Disorders takes these factors into account much more extensively than previous editions. Furthermore, a great deal of research on methodology in child assessment procedures has emerged recently. Yet, in spite of these advances, practicing clinicians are still frequently at a loss in moving from the characteristics of the disturbed child before them to the final assign­ ment of a psychiatric diagnosis. The focus of this book is to outline the various methods of viewing and categorizing the wide range childhood psycho­ pathology, with special emphasis on the end product of making a differential diagnosis. Our goal was to make this book unique in several ways. First, we attempted to cover a wider range of disorders than is typical in currently available hand­ books.

Often, a new area of science grows at the confines between recognised subject divisions, drawing upon techniques and intellectual perspectives from a diversity of fields. Such growth can remain unnoticed at first, until a characteristic fami ly of effects, described by appropriate key words, has developed, at which point a distinct subject is born. Such is very much the case with atomic 'giant resonances'. For a start, their name itself was borrowed from the field of nuclear collective resonances. The energy range in which they occur, at the juncture of the extreme UV and the soft X-rays, remains to this day a meeting point of two different experimental techniques: the grating and the crystal spectrometer. The impetus of synchrotron spectroscopy also played a large part in developing novel methods, described by many acronyms, which are used to study 'giant resonances' today. Finally, although we have described them as 'atomic' to differentiate them from their counterparts in Nuclear Physics, their occurrence on atomic sites does not inhibit their existence in molecules and solids. In fact, 'giant resonances' provide a new unifying theme, cutting accross some of the traditional scientific boundaries. After much separate development, the spectroscopies of the atom in various environments can meet afresh around this theme of common interest. Centrifugal barrier effects and 'giant resonances' proper emerged almost simultaneously in the late 1960's from two widely separated areas of physics, namely the study of free atoms and of condensed matter.

Channeling, by its nature, involves a wide and disparate range of disciplines. Crystal preparation, material science, accelerator physics, sophisticated theoretical analysis and, of course, channeling itself all must work in concert in a research program. In spite of the gulfs separating some of these activities, researchers have drawn together over the last decade to carry out remarkable experiments in relativistic channeling and channeling radiation. Several informal workshops on high-energy channeling have been held over ~he years at Aarhus and Fermilab. However, with the vigorous progress in the field in the last several years it became clear that a more formal, comprehensive workshop was needed along with a book that covered the whole spectrum of the new developments, probed the future, and also laid out some of the foundations of the subject. This volume is the outcome of that process. The organization and preparation of both the volume and the workshop owe much to several outstanding scientific committees. The membership of these included J. Andersen (Aarhus), S. Baker (Fermilab), B. Berman (G. Washington), G. Bologna (Torino), E. Bonderup (Aarhus), S. Datz (Oak Ridge), J. Forster (Chalk River), F. Fujimoto (Tokyo), W. Gibson (Albany), I. Mitchell (Chalk River), Y. Ohtsuki (Waseda), R. Pantell (Stanford), S. Picraux (Sandia), J. Remillieux (Lyon), A. Saenz (NRL), V. Schegelsky (Gatchina), C. Sun (Albany), H. tiberall (Catholic U. ), E. Uggerh¢j (CERN), and R. Wedell (Humboldt). Others from across the spectrum of scientific disciplines agreed to serve as session chairmen.

The purpose of this book is to review existing and developing family assessment methods relevant to the study of psycho­ pathology. It is our intention not only to inform clinical re­ searchers of the many valuable family assessment methods that are available, but also to encourage the incorporation of such procedures into future research efforts. In so doing, we believe that our understanding of the etiology, course, treatment, and prevention of adult and childhood disorders will be greatly enriched. The book begins with an overview of the larger social and intellectual forces which have led to the current interest in study­ ing family influences on psychopathology in children and adoles­ cence. For each "stream of influence," we attempt to highlight theoretical and methodological contributions relevant to the fami­ ly's role in the etiology, exacerbation, and treatment of childhood disorders. Next, a framework for classifying family measurement procedures is introduced in which three major dimensions are emphasized: unit of analysis, source of data, and construct as­ sessed. The third and most important chapter provides detailed reviews of a selected number of methods within each of the major groupings that have been delimited, references and brief descrip­ tions of other measures that cannot be reviewed in detail, and a discussion of the promising and developing techniques that are known to the authors.

The research of unitary concepts in solid state and molecular chemistry is of current interest for both chemist and physicist communities. It is clear that due to their relative simplicity, low­ dimensional materials have attracted most of the attention. Thus, many non-trivial problems were solved in chain systems, giving some insight into the behavior of real systems which would otherwise be untractable. The NATO Advanced Research Workshop on "Organic and Inorganic Low-Dimensional Crystalline Materials" was organized to review the most striking electronic properties exhibited by organic and inorganic sytems whose space dimensionality ranges from zero (Od) to one (1d), and to discuss related scientific and technological potentials. The initial objectives of this Workshop were, respectively: i) To research unitary concepts in solid state physics, in particular for one dimensional compounds, ii) To reinforce, through a close coupling between theory and experiment, the interplay between organic and inorganic chemistry, on the one hand, and solid state physics on the other, iii) To get a salient understanding of new low-dimensional materials showing "exotic" physical properties, in conjunction with structural features.

Conjugated polymers suoh as polyaoetylene (CH)x polyphenylene (C6H4)x' poly thiophene (C4H2S)x' etc. , which are insulators in their pristine state, can be brought to the metallic state after "doping" with ohemioal speoies whioh oan be either eleotron donors or I aoceptors. . This doping prooess involves a oharge transfer between the dopant moleoule and the polymer ohain whioh are then supposed to be spatially olose to each other. It follows that the meohanism of doping must be oonsidered as an aotual interoalation process, which will greatly affeot the struotural oharacteristios of the starting material, as well as its morphology, as has been observed during the 2 intercalation of graphite and layered compounds . In parallel with these modifioations, the band struoture of the system changes yielding a new set of eleotronio properties. It is evident therefore that the struotural and eleotronio properties are intimately related, and must be studied simultaneously in the same system to give reliable information. A great number of studies have been devoted to the structural and electronic properties of conjugated polymers after a chemical or 2 electrochemical doping process .Most of these concern the properties of the system for a given dopant concentration. With this approach a universal pioture of the polymer/dopant system is very diffioult to obtain, as a comparison between different experiments is very hazardous. On the other hand, only a small number of measurements have been performed during the continuous electroohemioal doping of various polymers.

This volume contains tutorial papers from the lectures and seminars presented at the NATO Advanced Study Institute on "Instabilities and Chaos in Quantum Optics", held at the "Il Ciocco" Conference Center, Castelvecchio Pascoli, Lucca, Italy, June 28-July 7, 1987. The title of the volume is designated Instabilities and Chaos in Quantum Optics II, because of the nearly coincident publication of a collection of articles on research in this field edited by F.T. Arecchi and R.G. Harrison [Instabilities and Chaos in Quantum Optics, (Springer, Berlin, 1987) 1. That volume provides more detailed information about some of these topics. Together they will serve as a comprehensive and tutorial pair of companion volumes. This school was directed by Prof. Massimo Inguscio, of the Department of Physics, University of Naples, Naples, Italy to whom we express our gratitude on behalf of all lecturers and students. The Scientific Advisory Committee consisted of N.B. Abraham of Bryn Mawr College; F.T. Arecchi of the National Institute of Optics in Florence and the University of Florence, and L.A. Lugiato of the Politechnic Institute of Torino. The school continues the long tradition of Europhysics Summer Schools in Quantum Electronics which have provided instruction and training for young researchers and advanced students working in this field for almost twenty years.

The papers contained in the volume represent lectures delivered as a 1983 NATO ASI, held at Urbino, Italy. The lecture series was designed to identify the key submicron and ultrasubmicron device physics, transport, materials and contact issues. Nonequilibrium transport, quantum transport, interfacial and size constraints issues were also highlighted. The ASI was supported by NATO and the European Research Office. H. L. Grubin D. K. Ferry C. Jacoboni v CONTENTS MODELLING OF SUB-MICRON DEVICES.................. .......... 1 E. Constant BOLTZMANN TRANSPORT EQUATION... ... ...... .................... 33 K. Hess TRANSPORT AND MATERIAL CONSIDERATIONS FOR SUBMICRON DEVICES. . .. . . . . .. . . . .. . .. . .... ... .. . . . .. . . . .. . . . . . . . . . . 45 H. L. Grubin EPITAXIAL GROWTH FOR SUB MICRON STRUCTURES.................. 179 C. E. C. Wood INSULATOR/SEMICONDUCTOR INTERFACES.......................... 195 C. W. Wilms en THEORY OF THE ELECTRONIC STRUCTURE OF SEMICONDUCTOR SURFACES AND INTERFACES......................................... 223 C. Calandra DEEP LEVELS AT COMPOUND-SEMICONDUCTOR INTERFACES........... 253 W. Monch ENSEMBLE MONTE CARLO TECHNIqUES............................. 289 C. Jacoboni NOISE AND DIFFUSION IN SUBMICRON STRUCTURES................. 323 L. Reggiani SUPERLATTICES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361 . . . . . . . . . . . . K. Hess SUBMICRON LITHOGRAPHY 373 C. D. W. Wilkinson and S. P. Beaumont QUANTUM EFFECTS IN DEVICE STRUCTURES DUE TO SUBMICRON CONFINEMENT IN ONE DIMENSION.... ....................... 401 B. D. McCombe vii viii CONTENTS PHYSICS OF HETEROSTRUCTURES AND HETEROSTRUCTURE DEVICES..... 445 P. J. Price CORRELATION EFFECTS IN SHORT TIME, NONS TAT I ONARY TRANSPORT. . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 477 . . . . . . . . . . . . J. J. Niez DEVICE-DEVICE INTERACTIONS............ ...................... 503 D. K. Ferry QUANTUM TRANSPORT AND THE WIGNER FUNCTION................... 521 G. J. Iafrate FAR INFRARED MEASUREMENTS OF VELOCITY OVERSHOOT AND HOT ELECTRON DYNAMICS IN SEMICONDUCTOR DEVICES............. 577 S. J. Allen, Jr.

A NATO Advanced Research Workshop on the "Mechanisms of Reactions of Organometallic Compounds with Surfaces" was held in St. Andrews, Scotland in June 1988. Many of the leading international researchers in this area were present at the workshop and all made oral presentations of their results. In addition, significant amounts of time were set aside for Round Table discussions, in which smaller groups considered the current status of mechanistic knowledge, identified areas of dispute or disagreement, and proposed experiments that need to be carried out to resolve such disputes so as to advance our understanding of this important research area. All the papers presented at the workshop are collected in this volume, together with summaries of the conclusions reached at the Round Table discussions. The workshop could not have taken place without financial support from NATO, and donations were also received from Associated Octel, Ltd., STC Ltd., and Epichem Ltd., for which the organisers are very grateful. The organisation of the meeting was greatly assisted by Mrs G. MacArthur and Mr L.R. Dunley of the Chemistry Department, St. Andrews University.

The last two decades have seen unprecedented increases in health care costs and, at the same time, encouraging progress in psychotherapy research. On the one hand, accountability, cost-effectiveness, and efficiency have now become commonplace terms for providers of mental health services whereas, on the other hand, an increasingly voluminous literature has emerged supporting the effectiveness of a number of types of psychotherapies. There now exists the possibility for the design and delivery of mental health services that-drawing upon this literature-more closely approximate empirically established data concerning the appropriateness and effectiveness of psychotherapy. The Handbook of the Brief Psychotherapies is intended to capture one major thrust of this movement: the development of a group of empirically grounded, time-limited therapies all sharing a common interest in the clinical utilization of a structured focus and an emphasis on time and action. For many years, professional self-interest, competing theoretical para­ digms, and the vagaries of practice, wisdom, and clinical myth have influenced the practice of psychotherapy. A critical questioning of the resulting, predomi­ nantly nondirective, open-ended, and global therapies has led to a growing emphasis on action-oriented, problem-focused, time-limited therapies. Yet, ironically, this interest in the brief psychotherapies has not so much involved a radical departure from traditional therapeutic modalities as it has emphasized a new pragmatism about how time, action, and structure operate in life as well as in therapy.