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Tijdschrift Tijdschrift voor Veiligheid x Jaar 2009 x
Artikel

Telefoontaps als netwerkdata?

Mogelijkheden en beperkingen om telefoontaps te gebruiken voor SNA van georganiseerde criminaliteit

Tijdschrift Tijdschrift voor Veiligheid, Aflevering 2 2009
Trefwoorden sociale netwerkanalyse, telefoontaps, georganiseerde criminaliteit
Auteurs Willem-Jan Verhoeven
SamenvattingAuteursinformatie

    The literature on using Social Network Analysis (SNA) in criminological research is expanding. The SNA perspective already changed the way we look at organized crime. More often organized crime is referred to as changeable social networks instead of hierarchical structured organizations like the Italian or American mafia. In this respect, SNA seems to lack behind in empirical research on organized crime. Mainly, this is due to the lack of suitable network data on organized crime. For obvious reasons, commonly used methods of gathering network data – such as questionnaires – are less suitable for research on organized crime. Suspects of organized crime have not much to gain from talking about their ‘comrades in crime’. Alternative data need to be explored. Wiretaps from criminal investigations are one such source. In this contribution the SNA perspective is used to present an overview of the possibilities and limitations of using wiretaps for SNA. It follows that wiretaps from criminal investigations should be regarded as ego-centered network data. Therefore, research questions and objective for both criminal investigations as well as scientific research should be directed to the personal networks of suspects instead of the network as a whole.


Willem-Jan Verhoeven
Willem-Jan Verhoeven is universitair docent Criminologie aan de Erasmus Universiteit Rotterdam. Contactadres: Criminologie/OMV, Erasmus Universiteit Rotterdam, Postbus 1738, 3000 DR Rotterdam. E-mail: verhoeven@frg.eur.nl.
Redactioneel

Toepassingen van sociale netwerkanalyse (SNA)

Tijdschrift Tijdschrift voor Veiligheid, Aflevering 2 2009
Trefwoorden sociale netwerkanalyse
Auteurs Dr. Renée C. van der Hulst en Leontien M. van der Knaap
SamenvattingAuteursinformatie

    In een redactioneel artikel geeft de redactie een toelichting op het tijdschriftnummer in kwestie.


Dr. Renée C. van der Hulst
Dr. Renée C. van der Hulst was tot voor kort als onderzoeker verbonden aan het Wetenschappelijk Onderzoek- en Documentatiecentrum (WODC) van het ministerie van Justitie. Zij is thans werkzaam voor Bureau Netwerkanalyse dat onderzoek-, advies- en onderwijswerkzaamheden verzorgt (onder andere op het gebied van sociale netwerkanalyse) binnen het domein van nationale veiligheid en criminaliteitsbestrijding. Contactadres: Bureau Netwerkanalyse, Postbus 938, 1200 AX Hilversum. E-mail: vanderhulst@online.nl.

Leontien M. van der Knaap
Leontien M. van der Knaap is universitair hoofddocent bij het International Victimology Institute Tilburg (INTERVICT) van de Universiteit van Tilburg. E-mail: l.m.vdrknaap@uvt.nl.
Artikel

Terroristische netwerken en intelligence: een sociale netwerkanalyse van de Hofstadgroep

Tijdschrift Tijdschrift voor Veiligheid, Aflevering 2 2009
Trefwoorden sociale netwerkanalyse, terrorisme, Hofstadgroep
Auteurs Dr. Renée C. van der Hulst
SamenvattingAuteursinformatie

    Radicalization and terrorism remain areas of special interest in terms of security policies. It’s common knowledge that most of the activities related to radicalization and terrorism heavily rely on the involvement of multiple actors. Therefore, an increased understanding of the underlying social structures is considered to offer important leads for the development of effective countermeasures (in particular when related to demographic, cultural, psychological and other social factors). Yet, the number of empirical network studies in this domain (at least those openly available) that incorporate arithmetic tools known as Social Network Analysis (SNA) remain extremely scarce. In this paper the author presents an exploratory Social Network Analysis of the Hofstad network based on publicly available data. Members of the Hofstad network, a radical Islamist network in the Netherlands, were active recruiters for the violent jihad, spreaded radical propaganda, some attended training camps in Pakistan, and the network was suspected of planning several terrorist attacks on strategic objects and prominent people in the Netherlands. One of the members, Mohammed B., was sentenced to life in prison for murdering the Dutch filmmaker Theo van Gogh in November 2004. Although the Hofstad network was considered by trial as a terrorist organization in the first instance in 2006, the judgment was reversed on appeal in 2008 when most members were acquitted. As is characteristic of home-grown networks, our analysis indicated that the Hofstad network (N=67) was relatively sparse and decentralized and evolved around a more cohesive core of key players (N=13). The key players were identified based on their central network position and a hierarchical clique analysis. Mohammed B., who had been considered a marginal player by the secret service, turns out to be the most central actor of the network. Although the analysis clearly suggests that quantifying network structures provides actionable intelligence, more research is needed to validate the results.


Dr. Renée C. van der Hulst
Dr. Renée C. van der Hulst was tot voor kort als onderzoeker verbonden aan het Wetenschappelijk Onderzoek- en Documentatiecentrum (WODC) van het ministerie van Justitie. Zij is thans werkzaam voor Bureau Netwerkanalyse dat onderzoek-, advies- en onderwijswerkzaamheden verzorgt (onder andere op het gebied van sociale netwerkanalyse) binnen het domein van nationale veiligheid en criminaliteitsbestrijding. Contactadres: Bureau Netwerkanalyse, Postbus 938, 1200 AX Hilversum. E-mail: vanderhulst@online.nl.
Artikel

Mediaberichtgeving over calamiteiten: de magie meester?

Tijdschrift Tijdschrift voor Veiligheid, Aflevering 1 2009
Trefwoorden mediaberichtgeving, calamiteiten, voorspelbaarheid, magiefactor
Auteurs Prof. dr. ir. Bastiaan Zoeteman en Drs. ir. Wouter Kersten
SamenvattingAuteursinformatie

    Authorities are increasingly challenged by the globalised media to improve their way of communication to the public. This applies particularly for the management of calamities. In the past government was acting at the top of the information pyramid, but this is no longer the case. Professionals and citizens have become more self reliant and active in collecting information. The hierarchical communication structure has been replaced by a network structure. In case the government is not handling this changed situation adequately it is likely to result in loss of authority and of communication efficiency.In this paper results are presented of two studies carried out in the period 2005-2007 involving in total 110 calamities. The general purpose of the study was to analyze the changing communication landscape of risks and calamities in order to provide government authorities with recommendations to improve communication effectiveness e.g. by applying communication instruments adapted to the new situation. In this context the predictability of the size of the media attention for a calamity has been assessed. If media attention can be predicted in an early phase of the calamity this will provide extra reaction time to authorities and may help to e.g. nominate a spokesperson at the right level from the beginning.The results show that media attention can be reasonably well predicted on the basis of a limited number of criteria. Powerful predictive criteria are e.g. economic damage, number of evacuated people, and a general criterion called the magic factor. This is a container criterion including aspects such as newness, hugeness and related aspects which have as common denominator that they stimulate imagination and have a highly emotional content.Although the study focused on external safety calamities the predictive methodology is also applicable for other types of calamities which have similar time-space characteristics, such as terrorist attacks. Media will however never be completely predictable. Therefore intuition, local expertise, and repeated assessment of the likely media attention are needed to come to a reliable overall judgement.


Prof. dr. ir. Bastiaan Zoeteman
Bastiaan C.J. Zoeteman is bijzonder hoogleraar Duurzaamheidsbeleid in Internationaal Perspectief bij Telos, Universiteit van Tilburg. E-mail: zoeteman@uvt.nl.

Drs. ir. Wouter Kersten
Wouter C. Kersten is onderzoeker bij Telos, Universiteit van Tilburg.
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