By simulating a multi-terminal high voltage DC grid using a detailed electro-magnetic transient simulation model, challenges in fault detection and discrimination are demonstrated. To select the most appropriate signal for fast and reliable detection of faults, behavior of the DC grid during the faults is observed by means of various terminal measurements. By simulating different scenarios, cha...

We examined the spatial relationship between seismicity and upper crustal structure in the Wakayama region, northwestern Kii Peninsula, Japan, by investigating microearthquake focal mechanisms and the local stress field. The focal mechanisms of most events studied fall into three categories: (1) normal faulting with N–S-oriented T-axes mainly occurring at shallow depths, (2) reverse faulting wi...

This contribution is concerned with the question whether an adversary can automatically manipulate an unknown FPGA bitstream realizing a cryptographic primitive such that the underlying secret key is revealed. In general, if an attacker has full knowledge about the bitstream structure and can make changes to the target FPGA design, she can alter the bitstream leading to key recovery. However, t...

Abstract The tectonic stress field was investigated in and around the aftershock area of Hokkaido Eastern Iburi earthquake ( M JMA = 6.7) occurred on 6 September 2018. We deployed 26 temporary seismic stations for approximately 2 months located 1785 aftershocks precisely. Among these aftershocks, 894 focal mechanism solutions were determined using first-motion polarity P wave from observation p...

The ore mineralogy of a new promising target the Aldan–Stanovoy gold province—the Spokoininsky cluster—is considered. Gold mineralization is represented by volumetric, nonlinear type, unconventional for region; it related to elements fold structures and reverse fault in enclosing metamorphic basement rocks. Vein-disseminated sulfide–(pyrite)–quartz ores build up deposit-like bodies beresites fr...

the doruneh fault is one of the longest and most prominent faults in iran. however, only two recorded historical earthquakes with magnitudes more than 7 might be related to this fault. for getting more information on this fault more investigation in different fields are required. fault displacement is one of the most important parameters needed to explore the fault activity. in this study, with...

(paper pages 133-156) zagros active fold-thrust belt lies on the northern margin of the arabian continental crust it is a young fold-thrust mountain belt currently shortening, thickening and uplifting as a result of the collision of the arabian and iranian plates. rethickening of crust during collisional orogenies could have been carried out by reversal of fault motion along the mesozoic normal...

This study focuses on determining the orientation and constraining magnitude of present-day stresses in Dezful Embayment Iran’s Zagros Fold Thrust Belt. Two datasets are used: first includes petrophysical data from 25 wells (3 to 4 km deep), second contains 108 earthquake focal mechanisms, mostly occurring blind active basement faults (5 20 deep). Formal stress inversion analysis mechanisms dem...

with development of technology and science and continuous increase in productivity, product life cycles are shortened and customer demands are more personalized and diversified, which makes companies face with ever changing and unpredictable competitive environment. therefore, rapid response to market competition has become one of the main focuses and the competitive advantages. today, one of t...