The purpose of this study is to offer help to patients through the employment of
databases applications of existing and available telecommunication systems in medical
services ,particularly treatment. So that it can be possible to avoided what can
be avoided
of health disasters that a human being encounter without warning. This study examines
how modern technologies can be employed in controlling and processing some vital signs
of human beings,particulary those who suffer some health problems affiliated with some
diseases ,and keeping these problems under control in order to maintain the stability of the
patients health statues.
The vital signs that the study is applied to are blood pressure, pulse and blood
glucose, since any of change in the value of any of these signs, positive or negative, may
cause the patient to have a sudden health problems.
شبكات الحساسات اللاسلكية
العلامات الحياتية
شبكات الحساسات اللاسلكية الحيوية
بروتوكول التوجيه بالزمن الحقيقي
استدعاء الطرق عن بعد
Vital signs
(WSN (wireless sensor networks
(WBSN (wireless body sensor networks
RTLD (Real-time with load distributed routing) Protocol
(RMI (Remote method invocation
المزيد..
This paper presents a method integrating database with Jgroup
based on Hibernate, which is one of Object Relational Mapping
tools. We compare between the performance of Jgroup integrated
with Hibernate and the performance of RMI integrated with
Hibernate. The results show that Jgroup/Hibernate outperforms
RMI/Hibernate when the number of clients increases.
The increasing reliance on network systems in day-to-day activities requires that they
provide available and reliable services. Jgroup provides available service through creating
multiple replicas of the same service on multiple devices. Jgroup ach
ieves reliable service
by maintaining the shared state between the replicas and coordinating their activities
through Remote Method Invocation. Unlike Jgroup, JavaGroups uses message passing to
implement coordination between the replicas.
In this paper, we compare Jgroup and JavaGroups for different Group Method
Invocation modes. These modes are Anycast and Multicast in Jgroup, GET_FIRST and
GET_ALL in JavaGroups.
This paper also improves the performance of ARM (Autonomous Replication
Management) which is embedded with Jgroup (Jgroup/ARM) for supporting fault
tolerance, through finding a new solution to handle group failure where all remaining
replicas fail in rapid succession. In this new solution, only one replica (the group leader)
issues renew events (IamAlive) periodically, instead of sending it by every replica in the
group, with taking the same period to discover group failure by Replication Manager.
Results of Comparison show that JavaGroups is faster than Jgroup when a single
replica is used, whereas Jgroup outperforms JavaGroups with increasing number of
replicas. The invocation delay in JavaGroups increases noticeably with increasing the size
of array passed into the invoked method which make JavaGroups unsuitable for
applications which require exchanging big sizes of data and use large number of servers,
whereas Jgroup is suitable for that.
Results show that the new proposal reduces the number of renew events to 37.5% at
most, and Jgroup/ARM takes approximately the same period of time to discover group
failure as in Meling solution.