A global-scale exploration risk analysis technique to determine the best mineral belts for exploration

2004 ◽  
Vol 113 (3) ◽  
pp. 183-196 ◽  
Author(s):  
S.R. Penney ◽  
R.M. Allen ◽  
S. Harrisson ◽  
T.C. Lees ◽  
F.C. Murphy ◽  
...  
2020 ◽  
Vol 55 (3) ◽  
Author(s):  
M. Di Nardo ◽  
M. Madonna ◽  
Mosè Gallo ◽  
Teresa Murino

The issues about legislation of safety management, as well as main techniques of "risk analysis and evaluation", are widely integrated in complex production environment. From an organizational and technological point of view, it’s not easy to implement these techniques in Small and Medium Enterprises. In fact, each technique does not permit a complete and exhaustive analysis and quantification of risks. Application of aforementioned methods does allow for achievement of a wide number of benefits. The aim of this paper is to critically analyse both analysis and risk assessment processes. In this paper, integration between System Dynamics and Layers of Protection Analysis technique is provided in order to enhance results of risk management. System Dynamics shows to be very effective in evaluating interaction effect of different incidental scenarios properly identified through risk analysis technique used. System Dynamics modelling permits simulation through changes in time and feedback mechanism. This approach has been validated via testing in a plastic molding plant with a scenario of risk of a massive fire.


2014 ◽  
Vol 1 (1) ◽  
pp. 70-93
Author(s):  
M. L. Ojigi ◽  
J. D. Dodo ◽  
Y. D. Opaluwa

The establishment of Earth Observation Satellite (EOS) ground receiving stations in parts of Nigeria and other parts of the globe, similar to the Indian Remote Sensing (IRS) model will enhance global telecommand, precise EOS tracking, data transmission, and distribution of NigeriaSat data, which will enhance global-scale data awareness, usage and higher financial returns for Nigeria. This study, therefore, attempts the application of Global Navigation Satellite System (GNSS) sky visibility planning and dilution of precision analysis technique to select the optimal location for EOS ground station(s) in Nigeria. The Nigerian Geodetic Network (NigNet) GNSS Continuously Operating Reference Stations (CORS) RINEX data of February 2012 and Trimble Total Control (TTC) software were used for the determinations of the baselines and positions of the 11 available CORS. The technique of GNSS sky visibility planning and dilution of precision (DOP) was adopted because signals from satellites behave in a similar pattern in the atmosphere, so poor visibility in GNSS signals in a particular observation window translates relatively to poor orbit definition signal for an EOS. Based on Jon's rating of DOP values [1= ideal; 2-3 = excellent; 4-6 =good; 7-8= moderate; 9-20=fair; 21-50= poor)], the DOP values for the stations across Nigeria can be adjudged to range between excellent and good for ground receiving stations. However, the overall results showed that GEMB on ellipsoidal heights of 1795.7857m has the most suitable DOPs and sky visibility plan for ground receiving sites followed by CGG Toro (916.7853m) and RAMPOLY Maiduguri (702m). The sky visibility analysis showed the availability of an average of 9 GPS and 2 GLONASS constellation satellites to receivers at elevation angles of 10°-15° between 6:00hrs and 24:00hrs daily across Nigeria. The approach of OS ground receiving station suitability analysts demonstrated in this study is recommended for the Nigerian. La mise en place de stations de réception au sol par satellite d'observation de la Terre (EOS) dans certaines parties du Nigeria et d'autres parties du globe, similaires au modèle indien de télédétection (IRS) améliorera la télécommande mondiale, le suivi EOS précis, la transmission de données et la distribution des données NigeriaSat. , ce qui améliorera la connaissance et l'utilisation des données à l'échelle mondiale et des rendements financiers plus élevés pour le Nigéria. Cette étude tente donc d'appliquer la planification de la visibilité du ciel du système mondial de navigation par satellite (GNSS) et la dilution de la technique d'analyse de précision pour sélectionner l'emplacement optimal pour la ou les stations au sol EOS au Nigéria. Les données RINEX des stations de référence en fonctionnement continu (CORS) du réseau géodésique nigérian (NigNet) GNSS de février 2012 et le logiciel Trimble Total Control (TTC) ont été utilisés pour déterminer les lignes de base et les positions des 11 CORS disponibles. La technique de planification de la visibilité du ciel GNSS et de dilution de la précision (DOP) a été adoptée car les signaux des satellites se comportent de manière similaire dans l'atmosphère, de sorte qu'une mauvaise visibilité des signaux GNSS dans une fenêtre d'observation particulière se traduit par un signal de définition d'orbite médiocre pour un EOS. . Basé sur l'évaluation des valeurs DOP de Jon [1 = idéal ; 2-3 = excellent ; 4-6 = bon ; 7-8= modéré ; 9-20=juste ; 21-50 = pauvre)], les valeurs DOP pour les stations à travers le Nigeria peuvent être estimées entre excellentes et bonnes pour les stations de réception au sol. Cependant, les résultats globaux ont montré que GEMB sur des hauteurs ellipsoïdales de 1795,7857m a les DOP et le plan de visibilité du ciel les plus appropriés pour les sites de réception au sol, suivis de CGG Toro (916,7853m) et RAMPOLY Maiduguri (702m). L'analyse de la visibilité du ciel a montré la disponibilité d'une moyenne de 9 satellites GPS et 2 satellites de la constellation GLONASS aux récepteurs à des angles d'élévation de 10° à 15° entre 6h00 et 24h00 tous les jours à travers le Nigeria. L'approche des analystes de l'adéquation des stations de réception au sol OS démontrée dans cette étude est recommandée pour le Nigérian.


2019 ◽  
Vol 32 (3) ◽  
pp. 123 ◽  
Author(s):  
Carmen Universidad de La Laguna Rodríguez-Wangüemert ◽  
Vanessa Universidad de La Laguna Rodríguez-Breijo ◽  
José-Manuel Universidad de La Laguna Pestano-Rodríguez

The media participates in the creation and reinforcement of mental models, through which people interpret social realities, especially those that are distant and unknown. News making involves the use of certain frames that highlight some aspects of the information and downplay or silence other elements. In this context, the objective of this article is to analyse how China is portrayed on the Spanish news, and identify the organising ideas and value judgments that are used in the frames used in this process. Based on the application of the content analysis technique, the results show that the portrayal of China, its institutions and citizens, on television is carried out through four main frames: “Capacity, potential, development;” “Gloom, shadow and darkness;” “Dangerous environment” and “Exotic organisation.” From the Western perspective, Chinese economic growth is accepted, but at the same time China is presented as a problematic country in which natural disasters, accidents, and criminal acts abound, highlighting its systemic political deficiencies and systemic deficiencies. This mostly negative image of China does not correspond with its current and historical relationship with Spain, nor with the relevant position that this emerging power has reached on a global scale.


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