Relating variation in species composition to environmental variables: a multi-taxon study in an Indonesian coral reef complex     

Daniel F. R. Cleary  Lyndon De Vantier  Giyanto  Lyle Vail  Philip Manto  Nicole J. de Voogd  Paola G. Rachello-Dolmen  Yosephine Tuti  Agus Budiyanto  Jackie Wolstenholme  Bert W. Hoeksema  Suharsono 《Aquatic Sciences - Research Across Boundaries》2008,70(4):419-431

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Decline of the Jakarta Bay molluscan fauna linked to human impact     

Sancia E.T. van der Meij  Robert G. Moolenbeek  Bert W. Hoeksema 《Marine pollution bulletin》2009,59(4-7):101

In 1937/38 representative mollusc collections were made in Jakarta Bay (West Java, Indonesia). New data from here and the adjacent offshore Thousand Islands archipelago (Kepulauan Seribu) became available in 2005. Although collecting efforts and sampling methods differed, a comparison of the molluscan fauna of Jakarta Bay between 1937/38 and 2005 reveals a distinct deterioration. From 1937 to 2005, Jakarta Bay received increasing amounts of sewage from the greater Jakarta area, as well as increased sediment input from the deforested West Java hinterland. Predatory gastropods and numerous mollusc species associated with carbonate (reef) substrate have vanished from Jakarta Bay, among which many edible species.  相似文献   

Transient response of a thick beam of bimodular material     

C. W. Bert  A. D. Tran 《地震工程与结构动力学》1982,10(4):551-560

Certain materials have different elastic behaviour when they are loaded in tension as compared to compression. As an engineering approximation, they are usually modelled as a bimodular material, i.e. a bilinear material having different Young's moduli in tension and in compression. All of the previous analyses of bimodular beams known to the present investigators have been concerned with either static loading or harmonic vibration. Thus, the present work is believed to be the first to consider transient response of such beams. The transfer-matrix method is used to discretize spatially, while the timewise discretization is accomplished by use of the Newmark beta method.  相似文献   

Using GIS to develop a mobile communications network for disaster-damaged areas     

Youhei Kawamura  Ashraf M. Dewan  Bert Veenendaal  Masahiro Hayashi  Takeshi Shibuya  Itaru Kitahara 《International Journal of Digital Earth》2014,7(4):279-293

Communications network damage resulting from a large disaster causes difficulties in the ability to rapidly understand the current situation and thus make appropriate decisions towards mitigating problems, such as where to send and dispense emergency supplies. The research outlined in this paper focuses on the rapid construction of a network after a disaster occurs. This study suggests ZigBee and geographic information systems (GIS) technologies to resolve these problems and provide an effective communication system. The experimental results of the ZigBee network system are presented, examples are provided of the mapping and analysis undertaken using GIS for the disaster-stricken area of Tsukuba City, Japan, and the communications node arrangements are determined for this region. These results demonstrate the effectiveness of establishing such a communications system for supporting efforts to relieve disaster-damaged areas.  相似文献   

PROMAS: Building GIS Capacity through Research and Extension Projects     

Jonathan Deckmyn  J. Feyen  F. Cisneros  & Bert De Bièvre 《Transactions in GIS》1999,3(4):376-376

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