scholarly journals Performance Analysis of Cache Based on Popularity and Class in Named Data Network

2020 ◽  
Vol 12 (12) ◽  
pp. 227
Author(s):  
Leanna Vidya Yovita ◽  
Nana Rachmana Syambas ◽  
Ian Joseph Matheus Edward ◽  
Noriaki Kamiyama
Keyword(s):  
Limited Resource ◽  
Data Network ◽  
Priority Class ◽  
Crucial Component ◽  
Ip Network ◽  
Cache Hit Ratio ◽  
Cache Mechanism ◽  
Network Cache ◽  
Different Content ◽  
Total Network

The communication network is growing with some unique characteristics, such as consumers repeatedly request the same content to the server, similarity in local demand trend, and dynamic changes to requests within a specific period. Therefore, a different network paradigm is needed to replace the IP network, namely Named Data Network (NDN). The content store, which acts as a crucial component in the NDN nodes is a limited resource. In addition, a cache mechanism is needed to optimize the router’s content store by exploiting the different content services characters in the network. This paper proposes a new caching algorithm called Cache Based on Popularity and Class (CAPIC) with dynamic mechanism, and the detail explanation about the static method also presented. The goal of Static-CAPIC was to enhance the total cache hit ratio on the network by pre-determining the cache proportion for each content class. However, this technique is not appropriate to control the cache hit ratio for priority class. Therefore, the Dynamic-CAPIC is used to provide flexibility to change the cache proportion based on the frequency of requests in real-time. The formula involves considering the consumers’ request all the time. It gives a higher cache hit ratio for the priority content class. This method outperforms Static-CAPIC, and the LCD+sharing scheme in the total network cache hit ratio parameter and channels it to the priority class.

scholarly journals Size-specific Advantage in Shelter Competition between the Mountain Madtom and Crayfishes

2020 ◽  
pp. 0000-0000
Author(s):  
Meredith H Harris ◽  
Kristin I Womble ◽  
J Brian Alford
Keyword(s):  
Population Decline ◽  
Relative Size ◽  
Limited Resource ◽  
Fish Population ◽  
Health Condition ◽  
Population Declines ◽  
Negative Effects ◽  
Growth And Survival ◽  
Crucial Component ◽  
Behavioral Trials

Shelter is a crucial component to many species' survival, and when shelter becomes limited, resulting competition can have negative effects on growth and survival. In Little Chucky Creek, a tributary to the Nolichucky River in Tennessee, the severe population decline of the Chucky Madtom Noturus crypticus has been partially attributed to an increase in the abundance of cavity-dwelling crayfish following the establishment of two nonnative species. While it has been suggested that the crayfish exclude the cavity-dwelling fish from shelter, we are not aware of studies that have been conducted to demonstrate that crayfish directly outcompete madtoms in this regard. Our objective was to experimentally test the hypothesis that shelter competition between crayfish and the Mountain Madtom N. eleutherus, a surrogate species for the Chucky Madtom, is a function of relative size. Behavioral trials were conducted in which shelter was the limited resource for the two potential competitors. The madtoms' success at occupying the provided cover object was recorded for 5 days as well as health condition at the end of the competition phase. Both madtom occupancy and health condition were positively correlated with increasing relative size. As the size differential increased between madtoms and crayfish, madtoms were more successful at occupying the cover object, and overall condition was greater at the end of the trial. Conversely, when madtoms were smaller than crayfish, individuals were more commonly excluded from the cover object or even killed. Juvenile madtoms experienced 100% mortality. We concluded that crayfish exhibit a size-specific competitive advantage over Mountain Madtoms when shelter is limited, and that crayfishes may catalyze fish population declines at least partially through shelter exclusion and predation on juveniles.

Implementasi Voip Server Berbasis IPV6 Dengan Raspberry PI

2019 ◽  
Vol 9 (01) ◽  
pp. 47-54
Author(s):  
Rabbai San Arif ◽  
Yuli Fitrisia ◽  
Agus Urip Ari Wibowo
Keyword(s):  
Internet Protocol ◽  
Wireless Transmission ◽  
Raspberry Pi ◽  
Test Results ◽  
Average Delay ◽  
Ipv6 Network ◽  
Ip Network ◽  
Selection Of ◽  
Better Than

Voice over Internet Protocol (VoIP) is a telecommunications technology that is able to pass the communication service in Internet Protocol networks so as to allow communicating between users in an IP network. However VoIP technology still has weakness in the Quality of Service (QoS). VOPI weaknesses is affected by the selection of the physical servers used. In this research, VoIP is configured on Linux operating system with Asterisk as VoIP application server and integrated on a Raspberry Pi by using wired and wireless network as the transmission medium. Because of depletion of IPv4 capacity that can be used on the network, it needs to be applied to VoIP system using the IPv6 network protocol with supports devices. The test results by using a wired transmission medium that has obtained are the average delay is 117.851 ms, jitter is 5.796 ms, packet loss is 0.38%, throughput is 962.861 kbps, 8.33% of CPU usage and 59.33% of memory usage. The analysis shows that the wired transmission media is better than the wireless transmission media and wireless-wired.

Modeling a Data Network Operation

2007 ◽  
Vol 66 (14) ◽  
pp. 1283-1290
Author(s):  
V. A. Ivanov ◽  
E. V. Grechishnikov ◽  
V. A. Lyubimov ◽  
A. S. Belov
Keyword(s):  
Data Network ◽  
Network Operation

AMBIGUITIES OF FORGIVENESS IN LEFT TO TELL: DISCOVERING GOD AMIDST THE RWANDAN HOLOCAUST (2006)

Imbizo ◽  
2017 ◽  
Vol 7 (1) ◽  
pp. 55-63
Author(s):  
Shingirirai Gabi
Keyword(s):  
Restorative Justice ◽  
Healing Process ◽  
Positive Thinking ◽  
Rwandan Genocide ◽  
Individual Level ◽  
Crucial Component ◽  
National Reconciliation

To interrogate the ambiguities of forgiveness it is important to understand the historicity of the Rwandan genocide and the complexities of the interchanging roles of victim/perpetrator and ‘the enemy other’. Ilibagiza is credited for including the historicity of the ethnic animosity in her memoir, as she acknowledges that the 1994 genocide did not just suddenly erupt, but the work will be critiqued for its persistent portrayal of the Tutsi as victims and the Hutu as perpetrators, and for not acknowledging that the Tutsi were a ‘historically privileged’ (Mamdani 2001) group before the 1959 revolution. This article interrogates Ilibagiza’s comprehension of forgiveness and its importance during the genocide and in post-genocide Rwanda. Left to tell centres on the power of religion, positive thinking and compassion as major steps towards forgiveness on an individual level, but shows limitations concerning justice after the commission of ‘crimes of state’, as Orentlicher (1991, 44) notes. Forgiveness is necessary in the healing process, but justice is a crucial component of national reconciliation. Forgiveness is only the first step towards restoring the humanity of the victim/ perpetrator, and should be followed by restorative justice.

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