Thesis (Master)--İzmir Institute of Technology, İzmir, 2005. / Keywords: Earthquake risk, damage estimation, risk assessment, earthquake resistance, urban renewal. Includes bibliographical references (leaves. 138-143).

<p>The user growth in Internet services for the past years has caused a need to re-think methods for user authentication, authorization and accounting for network providers. To deal with this growing demand for Internet services, the underlying user authentication systems have to be able to, among other things, handle load spikes. This can be achieved by using loadbalancing, and there are both adaptive and non-adaptive methods of loadbalancing.</p><p>This case study compares adaptive and non-adaptive loadbalancing for user authentication in terms of average throughput. To do this we set up a lab where we test two different load-balancing methods; a non-adaptive and a adaptive.</p><p>The non-adaptive load balancing method is simple, only using a pool of servers to direct the load to in a round-robin way, whereas the adaptive load balancing method tries to direct the load using a calculation of the previous requests.</p>

This thesis describes the draft and implementation of a new security with 802.1x in the corporate environment. The work is divided into two parts. The first part outlines the topic theoretically and the second part solves specific draft using 802.1x and its implementation in the corporate environment. The implementation is outlined with configuration of end clients, switches including RADIUS server and settings in AD. During the implementation, there is also described the authentication of devices by Mac Authentication Bypass.

This diploma thesis deals with the determination of the radius of rotation in selected articulated tractors. Describes the use and construction of tractors and their parts. The first part deals with the problems of tractors and the second is aimed at comparing the turning radius of three types of articulated tractors in the operation of agricultural primary production.

The user growth in Internet services for the past years has caused a need to re-think methods for user authentication, authorization and accounting for network providers. To deal with this growing demand for Internet services, the underlying user authentication systems have to be able to, among other things, handle load spikes. This can be achieved by using loadbalancing, and there are both adaptive and non-adaptive methods of loadbalancing. This case study compares adaptive and non-adaptive loadbalancing for user authentication in terms of average throughput. To do this we set up a lab where we test two different load-balancing methods; a non-adaptive and a adaptive. The non-adaptive load balancing method is simple, only using a pool of servers to direct the load to in a round-robin way, whereas the adaptive load balancing method tries to direct the load using a calculation of the previous requests.

AAA-protokoll är ett protokoll som hanterar uppkopplingsförfrågningar och bokför använda resurser hos användare för att senare kunna ta betalt. Det kan användas för mer än detta så som att erbjuda uppkoppling till trådlösa nätverk. AAA-protokoll erbjuder en centraliserad punkt för administration av uppkopplingshantering och nätverksåtkomst.RADIUS-protokollet är det mest använda AAA-protokollet i världen på grund av sin flexibilitet och öppna standarder. Protokollet innehåller dock en del brister mot funktionalitet och säkerhet, så som att protokollet är svagt mot man-i-mitten-attacker. Diameter är uppföljaren till RADIUS och är det bättre av dem båda. Arbetet går igenom, med fokus på säkerhet och funktionalitet, ifall Diameter rättar till de brister som finns i RADIUS och samtidigt om Diameter är ett protokoll för framtiden.Resultatet som presenteras är att Diameter förbättrar nästan alla de brister som uppdagats mot säkerhet och funktionalitet i RADIUS. De mest kritiska bristerna med RADIUS är dess skalbarhet och dess brist på trafikstockningskontroll i större organisationers nätverk. RADIUS-protokollet lämpar sig inte för större organisationer.Framtiden för Diameter är att anses som ljus. Diameter har rätt uppbackning från organisationer och marknaden i helhet för att bli det nästa stora AAA-protokollet. Diameter har även fått protokollet IMS anpassat efter sig och på så sett visar marknaden stort förtroende för Diameter-protokollet.

During the economic crisis in the years 2008 - 2009, the management of the company TRW Dačice laid the requirement to increase efficiency and profitability of the production of radius rods. Master thesis deals with the analysis and a proposal of costs-saving actions.

An optical study of Mn and Mo isotopes has been performed in two contrasting regions of the nuclear chart. Collinear laser spectroscopic methods were employed using the Ion Guide Separator On-Line (IGISOL) at the University of Jyväskylä, Finland. Optical pumping in an ion-trap with the use of frequency quadrupled titanium sapphire lasers, greatly improved the efficiency of the spectroscopy performed.For the first time, the change in mean-square charge radius was determined for ground and isomeric states in 50-56Mn with a sharp shell closure seen across N = 28. Nuclear quadrupole moments in 50m,53,54,56Mn were also extracted, displaying trends similar to those of the charge radii. Newly extracted hyperfine structures and isotope shifts of 90-92,94-98,100,102-106,108Mo span the N = 50 shell closure and well-known N = 60 shape change. Unlike the Z = 38 - 41 isotopic chains, Mo exhibits a smooth increase in mean-square charge radius, with no sudden onset of deformation at N = 60. These measurements signify the end point of this strongly deformed A ~ 100 region in both Z and N. In the Z ~ 40 region, the charge radii follow the trends in the mass measurements near perfectly. However, in the Mn measurements a clear disparity between the mass and charge radii measurements is seen across the N = 28 magic shell closure. The absence of any shell effects in the Mn mass measurements show the importance of charge radii measurements, with pertinent implications for future investigations in the N = 40 region. Additionally, a portable data acquisition system for laser spectroscopy has been successfully tested. It is based on the LabJack system which will directly interface to a USB connection. It is able to register individual photons from amplified and converted photomultiplier tube signals (with bunched or continuous ion beams). The device drives a Cooknell voltage supply, which steps the voltage across the laser-ion interaction region. The introduction of an accurate 100 ms time window into the LabJack system has enabled a precise photon detection system for future off-line testing and on-line use. Further to this, a new method of locating hyperfine resonances has been introduced into our spectroscopy.

Introduction: Metaphyseal inwaisting is a process that occurs during long bone growth and remodelling of epiphyses and results in a proportional increase in growth plate width (GPW) and a decrease in metaphyseal width (MW). The Metaphyseal Index (MI) compares GPW to MW, usually in the distal femur. However, due to bone-age assessments, the most commonly performed radiograph in children is that of the hand/forearm. Previous work showed that gymnasts have a more widened growth plate at the distal radius than normal children, but these studies did not quantify the morphological changes using the MI and pQCT measures. Previous studies have shown that the use of DXA hand/forearm images for the purposes of bone-age assessment were unreliable for children aged 11 and under. Aims: Examine distal radius morphology of 378 Normal subjects (155 male), 36 Gymnast subjects (15 male), 17 NF1 subjects (7 male) and 108 CDGP subjects (83male) to calculate the precision of MI, MW and GPW measurements, to determine a normal reference range for the MI in Normal subjects and use this to compare to the other 3 groups, and to compare longitudinal measurements. Also, to investigate whether DXA software upgrades have improved the ability to make TW3 bone-age assessments, to investigate how closely DXA compares with standard radiographs using 98 (38 male) DXA hand images and radiographs, and calculate the precision (CV%) of the GP and TW3 bone-age assessment methods. Methods: Anthropometric data, Tanner stage, posterior-anterior hand radiographs and pQCT scans of the non-dominant hand/forearm were obtained. MI was measured using a semi-automated computer-assisted method. Statistical analyses were used to compare males and females, and compare the Normal group to other groups. Also, DXA images and radiographs were assessed by the same assessor and the TW3 and GP bone-ageing methods were compared. A CV% was calculated for both comparisons. Results: The CV% of MI, MW and GPW = 1.05%, 0.92% and 1.28% respectively. MI of males and females was not statistically different in any group. The MI of Gymnasts was significantly lower than the Normal group (p = 0.008). The NF1 and CDGP groups were not significantly different from the Normal group. Longitudinal measurements indicated those with a low/high MI at the first visit were likely to have a low/high MI at the second visit, though occasionally the MI would decrease between visits. DXA bone age assessments proved to be reliable in subjects of all ages assessed in this study and showed a CV% only slightly higher than standard radiographs (CV = 2.95% DXA vs2.68% radiograph). The CV% of GP and TW3 methods = 2.68% & 1.61% respectively. Discussion: The CV% of MI, MW and GPW shows these methods to be very precise. The mean MI of gymnasts is significantly lower than in normal children due to a widening of the growth plate and not due to a reduction in metaphyseal width. Insufficient subject numbers and smaller age ranges, particularly in the Gymnast and NF1 groups may play a part in the non-significant differences between them and the Normal group. DXA CV% shows that DXA is almost interchangeable with standard radiographs. The TW3 and GP CVs% show that TW3 bone-age assessment is more precise than the GP method. This confirms the tight control that the MW and GPW have in proportion to each other. This is the first study to quantify changes in distal radius morphology in normal, athlete and disease groups, and create a range of normal reference values, which could be useful for future work in this area.

The Master’s thesis ”The Implementation of the Advanced Filtering Based on the Packets’ Classification using Linux” is intended to the realization of an internet gateway. The gateway serves to make the connection between local network and the internet. The thesis contains a short theoretic description of parameters and types of QoS services. The classful and classless queues are mentioned in detail. The last theoretic part refers to the introducing of LDAP protocol and its usage. The practical part of this thesis captures the configuration of firewall, dns and radius server connected with LDAP databases. The thesis also contains detailed description of the production QoS by HTB with L7-filter including the compilation of system’s core. The end of the thesis contains the series of tests of created scripts.