Controlled electrostatic methodology for imaging indentations in documents

The electrostatic process for imaging indentations on documents using the ESDA device is investigated under controlled experimental settings. An in-house modified commercial xerographic developer housing is used to control the uniformity and volume of toner deposition, allowing for reproducible image development. Along with this novel development tool, an electrostatic voltmeter and fixed environmental conditions facilitate an optimization process. Sample documents are preconditioned in a humidity cabinet with microprocessor control, and the significant benefit of humidification above 70% RH on image quality is verified. Improving on the subjective methods of previous studies, image quality analysis is carried out in an objective and reproducible manner using the PIAS-II. For the seven commercial paper types tested, the optimum ESDA operating point is found to be at an electric potential near -400V at the Mylar surface; however, for most paper types, the optimum operating regime is found to be quite broad, spanning relatively small electric potentials between -200 and -550V. At -400V, the film right above an indented area generally carries a voltage which is 30-50V less negative than the non-indented background. In contrast with Seward's findings [G.H. Seward, Model for electrostatic imaging of forensic evidence via discharge through Mylar-paper path, J. Appl. Phys. 83 (3) (1998) 1450-1456; G.H. Seward, Practical implications of the charge transport model for electrostatic detection apparatus (ESDA), J. Forensic Sci. 44 (4) (1999) 832-836], a period of charge decay before image development is not required when operating in this optimal regime. A brief investigation of the role played by paper-to-paper friction during the indentation process is conducted using our optimized development method.     

Book reviews

John P. Willerton, Patronage and Politics in the USSR. Cambridge: Cambridge University Press, 1992, xv+305 pp., $59.95, £40.00.

Michael Ellman & Vladimir Kontorovich, eds, The Disintegration of the Soviet Economic System. London and New York: Routledge, 1992, xv+281 pp., h/b £45.00., p/b £14.99.

Paul R. Josephson, Physics and Politics in Revolutionary Russia. Berkeley, CA: University of California Press, 1991, xix+423 pp., $39.95.

Hélène Carrère D'Encausse, The Great Challenge: Nationalities and the Bolshevik State 1917–1930. Nancy Festinger, Trans., Richard Pipes, Foreword. New York: Holmes & Meier Publishers, 1991, xviii+262 pp., $39.95.

Niels Erik Rosenfeldt, Stalin's Secret Chancellery and the Comintern. University of Copenhagen, Institute of Slavonic and East European Studies, 1991. 116 pp.

Christoph Bluth, Soviet Strategic Arms Policy Before SALT. Cambridge: Cambridge University Press, 1992, 317 pp., £40.00.

Roger E. Kanet, Deborah Nutter Miner & Tamara J. Resler, Soviet Foreign Policy in Transition. Cambridge University Press, 1992, xvi+308 pp., £40.00, $59.95.

M. A. Babkina, ed., New Political Parties and Movements in the Soviet Union. Commack, NY: Nova Science Publishers, Inc., 1991, 156 pp., $35.00.

S. Berglund & J. A. Dellenbrandt, eds., The New Democracies in Eastern Europe: Party Systems and Political Cleavages. Aldershot: Edward Elgar, 1991, xii + 237 pp., £39.95.

Gyorgy Csepeli & Antal Örkény, Ideology and Political Beliefs in Hungary: The Twilight of State Socialism. Trans., Brian McLean & Julianna Parti, London: Pinter, 1992, viii+148 pp., £35.00.     

Religious Innovation and Competition in Contemporary African Christianity

ABSTRACT

This introductory essay lays out the main themes of a special issue of Journal of Contemporary African Studies which brings together six empirically grounded papers by African social scientists of different disciplinary backgrounds. These works touch on various aspects of the social impact of religious innovation and competition in present day African Christianity. They represent the first fruits on the social science side of an interdisciplinary initiative that made 23 research grants for theologians and social scientists to study Christianity and social change in contemporary Africa. These articles focus on a variety of dynamics in contemporary African religion (mostly Christianity), including gender, health and healing, social media, entrepreneurship, and inter-religious borrowing and accommodation. The editors conclude that the research and learning reflected in this volume will enhance understanding of religion’s vital entanglement in contemporary African society. The articles reveal problematic ethical and psychological dynamics in some of these new movements, particularly among some of the neo-Pentecostal groups. Yet the authors are determined to go beyond perspectives that are overly fixated with African problems and victimisation. They are keen to explore opportunities for understanding African agency and African wellsprings of hope. The editors conclude that scholars of religion and religiosity in Africa need to invest new conceptual and methodological energy in researching what it means to be actively religious in Africa today.     

Environmental management and street-level regulators: A cultural trap?

It has been argued that environmental management is in an administrative trap. Numerous factors leading to this trapped situation have already been identified in the literature: institutional rigidity, lack of co-ordination, formalization, non-accountability and political interference. This study focusses on the organizational, cultural dimension of the administrative trap and argues that in order to reform administrative structures, the organizational culture must also be reformed. On the basis of several face-to-face interviews with street-level environmental regulators in Hong Kong, the study claims that a role-oriented, hierarchical culture exists. While such an organizational culture is in perfect agreement with existing administrative arrangements, it may, in the end, hamper the effectiveness of environmental management.     

An ego-strength scale for the Child Abuse Potential Inventory

A series of investigations were conducted to develop an ego-strength scale from items in the Child Abuse Potential Inventory. Using a two-dimensional model of ego-strength, face valid items were selected. After an initial screening of face valid items using Barron's ego-strength scale, a multiple criterion item validation process was conducted using factors from the 16PF questionnaire. This procedure produced a 40-item ego-strength scale where all items had significant item-total correlations. Internal consistency and temporal stability of the ego-strength scale were found to be adequate. Factor analyses suggested the ego-strength scale is unitary, measuring emotional stability in relationships. Moderator variable effects were found to be modest. Most important, ego-strength scale data collected from nurturing parents, general population parents, at-risk parents, and groups engaging in various forms of family violence yielded scores that discriminate between groups in a predictable manner.     

Childhood history of abuse and adult child abuse potential

The experience of aversive interactions within the family of origin is believed to increase the probability of parental physical child abuse. To test this hypothesis, 375 subjects were given a Childhood History Questionnaire (CHQ) and the Child Abuse Potential (CAP) Inventory. The CHQ contained a series of questions about the presence and frequency of various abusive behaviors and associated sequelae that were received and/or observed before and/or after puberty. The CAP Inventory was used to measure adult physical child abuse potential. As expected, a childhood history of physical abuse was significantly related to adult physical child abuse potential; and, as chronicity increased, so did abuse potential. The experience of physical abuse prior to puberty produced higher abuse scores than the experience of physical abuse after puberty. The study provides preliminary data indicating the childhood experience of a caring adult and / or caring friend moderates adult child abuse potential.