5324 research outputs found
Sort by
IPv6 stateless address autoconfiguration : balancing between security, privacy and usability
No full textIncluded in the IPv6 suite is a method for devices to automatically
configure their own addresses in a secure manner. This technique
is called Cryptographically Generated Addresses (CGAs). CGA
provides the ownership proof necessary for an IPv6 address without relying
on any trust authority. However, the CGAs computation is very
high, especially for a high security level defined by the security parameter
(Sec). Therefore, the high cost of address generation may keep
hosts that use a high Sec values from changing their addresses on a
frequent basis. This results in hosts still being susceptible to privacy related
attacks. This paper proposes modifications to the standard CGA
to make it more applicable security approach while protecting user privacy.
We make CGA more privacy-conscious by changing addresses over
time which protects users from being tracked. We propose to reduce the
CGA granularity of the security level from 16 to 8. We believe that an
8 granularity is more feasible for use in most applications and scenarios.
These extensions to the standard CGA are implemented and evaluated
A Microcosm of Palestine: Witnessing the 1967 Fall of Jerusalem
No full textThis relative dearth of
material is due to a number of obvious
and some less obvious factors. 1948 is the
marker of transformation in Palestine and the
historic moment whose shadow hangs over
everything, including scholarship, though
the Nakba is an on-going colonial process
of which the war in 1967 is a major aspect.
For historians, working on the Nakba within
the (narrow) lens of 1948 has been a duty
of national importance. After all, the mere
scope and size of Zionist mythology on the
matter has taken decades to counter. If the
victor tells the tale, Palestinians have been
trying desperately for three generations, and
at the very least, to proclaim: we did and do
exist here. Within this colonial context it is
even more troubling to reflect on Jerusalem
in 1967 and think about how the important
work of “recording” has taken a back seat
relative to our other individual and collective
concerns.Israel-Arab War, 1967 - Jerusale
The diagnostic accuracy of multi-frequency bioelectrical impedance analysis in diagnosing dehydration after stroke
No full textBackground: Non-invasive methods for detecting water-loss dehydration following acute stroke would be clinically useful.
We evaluated the diagnostic accuracy of multi-frequency bioelectrical impedance analysis (MF-BIA) against reference
standards serum osmolality and osmolarity.
Material/Methods: Patients admitted to an acute stroke unit were recruited. Blood samples for electrolytes and osmolality were taken
within 20 minutes of MF-BIA. Total body water (TBW%), intracellular (ICW%) and extracellular water (ECW%),
as percentages of total body weight, were calculated by MF-BIA equipment and from impedance measures using
published equations for older people. These were compared to hydration status (based on serum osmolality
and calculated osmolarity). The most promising Receiver Operating Characteristics curves were plotted.
Results: 27 stroke patients were recruited (mean age 71.3, SD10.7). Only a TBW% cut-off at 46% was consistent with
current dehydration (serum osmolality >300 mOsm/kg) and TBW% at 47% impending dehydration (calculated
osmolarity ≥295–300 mOsm/L) with sensitivity and specificity both >60%. Even here diagnostic accuracy of
MF-BIA was poor, a third of those with dehydration were wrongly classified as hydrated and a third classified
as dehydrated were well hydrated. Secondary analyses assessing diagnostic accuracy of TBW% for men and
women separately, and using TBW as a percentage of lean body mass showed some promise, but did not provide
diagnostically accurate measures across the population.
Conclusions: MF-BIA appears ineffective at diagnosing water-loss dehydration after stroke and cannot be recommended as
a test for dehydration, but separating assessment by sex, and using TBW as a percentage of lean body weight
may warrant further investigatio
Monthly Recharge Estimation for the Auja - Tamseeh Catchment of the Western Basin Aquifers – System, Palestine.
No full textAsbah,Sawsan
إدارة النفايات الصلبة الصناعية في محافظتي نابلس ورام الله والبيرة
No full textGeosciences and Earth Science
