CIRAS News, Fall 2000, Vol. 35, no. 1

CIRAS is to enhance the performance of Iowa industry, and associated entities, through education and technology-based services. This newsletter holds information regarding these services.

CIRAS News, Winter 2000, Vol. 35, no. 2

CIRAS is to enhance the performance of Iowa industry, and associated entities, through education and technology-based services. This newsletter holds information regarding these services.

CIRAS News, Summer 2000, Vol. 35, no. 4

CIRAS is to enhance the performance of Iowa industry, and associated entities, through education and technology-based services. This newsletter holds information regarding these services.

CIRAS News, Spring 2001, Vol. 35, no. 3

CIRAS is to enhance the performance of Iowa industry, and associated entities, through education and technology-based services. This newsletter holds information regarding these services.

CIRAS News, October 2001, Vol. 35, no. 4

CIRAS is to enhance the performance of Iowa industry, and associated entities, through education and technology-based services. This newsletter holds information regarding these services.

CIRAS News, Winter 2001, Vol. 35, no. 2

CIRAS is to enhance the performance of Iowa industry, and associated entities, through education and technology-based services. This newsletter holds information regarding these services.

Anàlisi del risc del preu dels índex IBEX-35 i DAX-30

En aquest treball es porta a terme l’anàlisi del comportament dels índexs IBEX-35 i DAX-30 en el període comprès entre els anys 2008 – 2012. L’objectiu del treball és analitzar com han evolucionat determinades mesures del risc, com són, la Volatilitat, el VaR i el CVaR en els dos índexs. Aquest anàlisi té la finalitat d’aconseguir evidències del diferent comportament d’aquests índexs en el període analitzat, i així veure el diferent impacte que ha tingut la crisis econòmica actual en l’economia espanyola i alemanya.

L'evolució del risc del preu de l'IBEX 35 i de l'or de 24 quirats durant el període 2008-2012

En aquest treball es porta a terme l’anàlisi del comportament i l’anàlisi del risc del preu de l’índex borsari IBEX-35 i de la matèria primera Or de 24 quirats, durant el període comprès entre els anys 2008-2012. Concretament s’analitza com han evolucionat determinades mesures del risc, com la Volatilitat, el VaR i el CVaR, en IBEX-35 i en l’Or de 24 quirats. La finalitat d’aquests càlculs, és aconseguir evidencies del diferent comportament del preu de l’IBEX-35 i de l’Or de 24 quirats entre els anys 2008 i 2012, i poder tenir arguments a favor de la idea de que l’Or és un valor refugi, sobretot en temps de crisi.

Field Instrumentation, Testing, and Long-Term Monitoring of High-Mast Lighting Tower No. 1 at the I-35/US 18 Interchange Near Clear Lake in the State of Iowa Phase 3, TR-562, 2009

The current study was initiated to quantify the stresses induced in critical details on the reinforcing jacket and the tower itself through the use of field instrumentation, load testing, and long-term monitoring. Strain gages were installed on the both the tower and the reinforcing jacket. Additional strain gages were installed on two anchor rods. Tests were conducted with and without the reinforcing jacket installed. Data were collected from all strain gages during static load testing and were used to study the stress distribution of the tower caused by known loads, both with and without the reinforcing jacket. The tower was tested dynamically by first applying a static load, and then quickly releasing the load causing the tower to vibrate freely. Furthermore, the tower was monitored over a period of over 1 year to obtain stress range histograms at the critical details to be used for a fatigue evaluation. Also during the long-term monitoring, triggered time-history data were recorded to study the wind loading phenomena that excite the tower.