Investigation of Mobile IPv6 and SIP integrated architectures for IMS and VoIP applications

Mobile IPv6 and SIP are protocols designed to support different types of mobility. Mobile IPv6 has been used to support mobility in IP networks and SIP has been used for voice over IP applications. It is the signalling protocol of the IP multimedia subsystem (IMS). In this paper both protocols have been simulated and compared in order to observe their performance for voice over IP (VoIP) applications. In this paper the architectures proposed by researchers in order to combine mobile IPv6 and SIP have also been investigated and compared to analyse their advantages and disadvantages. A network scenario, running mobile IPv6 and SIP for IMS, has also been simulated in order to evaluate the performance offered by the two protocols and to compare them with the results from the simulation of the pure mobile IPv6 and SIP architectures. The comparison shows that the combined scenario offers better performance similar to the one obtained using only mobile IPv6 with route optimization. The scenario simulated was also compared with the integrated architectures for mobile IPv6 and SIP that were investigated

Dakwah dan Perubahan Sosial: Studi terhadap Peran Manusia sebagai Khalifah di Muka Bumi

Da'wa is a process of increasing the quality of faith within human soul according to the Islamic sharia. This process is continuous, systematic and it should be carried out step by step. This process aims at activating the act of continuous improvement within oneself. Enhancing faith towards god is manifested in the form of enhancing knowledge, awareness, and good deeds. Therefore, it is a moral obligation for Muslims to keep the course of social change on track through introducing and implementating Islamic values in every aspect of life. Thus, it is not an exaggeration to say that achieving the goal of divine social change according to Islam can onle be carried out by da'wa activity

Pemikiran Filsafat Al-kindi

Al-Kindi is the first Muslim philosopher to construct Islamic philosophical thoughts in a systematic and clear way. Philosophical thoughts of Al-Kindi are reflection of doctrines that he received from classic Greece sources and the legacy of Neo-Platonic thoughts combined with Islamic faith. Al-Kindi opens the room of dialogue to combine philosophical doctrines and religion. Knowledge about God, according to Al-Kindi, is early philosophy or the first philosophy; philosophy that states al-Haqq as telos that will end the overall works of philosophy. Al-Kindi divides intelligence based on several stages as follows: active intelligence (intelligence that guarantees the ability of human beings to understand rational matters that needs external stimuli), actual intelligence (potential intelligence that escaped potential boundary when soul started to understand rational and abstract matters), and physical intelligence (intelligence that seriously comprehend rational matters and seeks to transform potential matter into actual thing)

IMPLEMENTASI GAME ONLINE TERHADAP MOTIVASI BELAJAR PESERTA DIDIK DI SEKOLAH DASAR

ONLINE GAME IMPLEMENTATION TOWARDS STUDENTS 'LEARNING MOTIVATION IN PRIMARY SCHOOLSThis study aims to determine the use of online games in students, and to determine the use of online games in motivating students' learning, as well as to determine the positive and negative impacts of using online games on students. This research uses descriptive qualitative. Data was collected through interviews, observation and documentation. This study uses data analysis techniques, which consist of the stages of data collection, data reduction, data presentation, and drawing conclusions. The results showed that the use of online games in students had disciplinary rules at school, online games were used as a learning resource and means or media, the positive impact of using online games for students could support a fun learning process to facilitate the learning process, while the negative impact of using online games, causing students to become addicted or addicted. So that the decrease in the learning motivation of students. The conclusion of this study is the use of online games is expected to be a source of learning and learning media in the learning process so that students are motivated to learn

The Water Footprint of Data Centers

The internet and associated Information and Communications Technologies (ICT) are diffusing at an astounding pace. As data centers (DCs) proliferate to accommodate this rising demand, their environmental impacts grow too. While the energy efficiency of DCs has been researched extensively, their water footprint (WF) has so far received little to no attention. This article conducts a preliminary WF accounting for cooling and energy consumption in DCs. The WF of DCs is estimated to be between 1047 and 151,061 m3/TJ. Outbound DC data traffic generates a WF of 1–205 liters per gigabyte (roughly equal to the WF of 1 kg of tomatos at the higher end). It is found that, typically, energy consumption constitues by far the greatest share of DC WF, but the level of uncertainty associated with the WF of different energy sources used by DCs makes a comprehensive assessment of DCs’ water use efficiency very challenging. Much better understanding of DC WF is urgently needed if a meaningful evaluation of this rapidly spreading service technology is to be gleaned and response measures are to be put into effect

Peran Pemerintah Desa dalam Pelaksanaan Program Tanam Bawang Merah di Desa Sungai Geringing Kecamatan Kampar Kiri Kabupaten Kampar Tahun 2014

The purpose of this study was to determine the role of Village government in implementing the program of planting onions in Village Sungai Geringging and to determine the factors inhibiting and supporting the role of Village government in the implementation of the program of planting onions in Village Sungai Geringging.This research was conducted in the of Village Sungai Geringin Kecamatan Kampar Kiri, Kabupaten Kampar district in Riau province. In determining informant in this study determined people who know and get involved in the program of planting onions in Village Sungai Geringin Kecamatan Kampar Kiri, Kabupaten Kampar, then the necessary data, including primary data and secondary data. For data collection techniques done by interview, observation and literature study. Data analysis method used in this research is qualitative descriptive analysis method.The village governments role in the implementation of the program of planting onions in Village Sungai Geringging include: 1) improving the quality of human resources of farmers through extension activities and training for farmers onion. 2) provide capital assistance through a revolving fund for farmers onion, this event seeks to help the onion farmers in order to increase agricultural output onion. Assistance provided in the form of compost, seedlings of onion and some farm implements. 3) improve the marketing network of onion because farmers prefer to sell their harvest in place / in the fields. 4) the provision of infrastructure /agricultural infrastructure onion. The inhibiting factor onion planting program in Village Sungai Geringging are 1) lack of human resources involved in implementing the program of planting onions in Village Sungai Geringging, both in terms of village government and farmers groups onion. 2) the limited budget given to the farmer groups onion in Village Sungai Geringging. 3) the environmental conditions in Village Sungai Geringging erratic which has an impact on the growth of onion in Village Sungai Geringging.Keywords: Role, the Village Government, Planting Program Shallot

Epuration des effluents industriels par électroflottation

L’utilisation de l’électricité comme mode direct de traitement des effluents est un domaine en pleine expansion. En effet, la diminution du prix de l’électricité couplée aux facilités d’automatisation de tels procédés rendent ces techniques plus attractives, particulièrement lors de la mise en place de petites unités de traitement. Dans ce travail, un modèle réduit d'électroflottation conçu et réalisé au laboratoire, traite des solutions artificielles (eau et gel de silice Ø50 < 25 mm) à différentes tensions (10, 15, 20 et 25 V volts) tout en modulant la distance entre les électrodes (1, 2 et 3 cm), pour optimiser les paramètres de traitement (temps de traitement, écart entre les électrodes, tension d'alimentation). L'application des paramètres optimisés sur les eaux de rejets du complexe industriel ALCOVEL d'Akbou a montré, une réduction de la demande biologique en oxygène (DBO5), la demande chimique en oxygène DCO, la turbidité, les MES et de la couleur de 93.5 %, 90.3 %, 78.7 %, 93.3 % et plus de 93%, respectivement. Dans la deuxième partie, nous avons étudié la séparation de quelques métaux lourds tels que le fer, le nickel, le cuivre le zinc, le plomb et le cadmium. Cela nous a permet de montrer que le taux d'épuration atteint les 99 % et la cinétique d'électroflottation ne dépasse pas les 15 minutes.Mots clés: électroflottation; électrodes en aluminium; turbidité; effluents industriels; métaux lourds, spectrométrie. The present work purpose is to study experimentally the clarification of wastewater using the electroflotation technique. In a first part, we have realized the bench scale. After that, we have studied the principal parameters (alimentation tension, distance between electrodes, period of treatment) affecting the process using a simulated model of wastewater. The application of the optimized parameters on wastewater of the treatment station of ALCOVEL, showed a high removal of BOD5, COD, turbidity, SS and colour. In a second part, we have studied the separation of some heavy metals such as iron, nickel, copper, zinc, lead and cadmium. This, permeated us to show that the kinetic of electroflotation is very quick (<15 min), and the removal rate reach 99%.Keywords: electroflotation; aluminum electrodes; turbidity; industrial wastewater; heavy metals; spectrometry

An Investigation into the Effects of Teacher Involvement and Influence on the Creativity of Children in the Classroom

Children have potential for demonstrating increased creativity where certain negative influences are removed during the creative process. These negative influences include the involvement of the teacher in the art and design class at school. This study establishes through primary and secondary research the different ways that teachers engage with children as potential influences that are tested through experimentation. The study was concerned with revealing levels of creativity in designs as well as signs of adult influence. The results revealed that different types of involvement do have a negative impact on creativity, especially giving children instructions

Self-affine surface morphology of plastically deformed metals

We analyze the surface morphology of metals after plastic deformation over a range of scales from 10 nm to 2 mm, using a combination of atomic force microscopy and scanning white-light interferometry. We demonstrate that an initially smooth surface during deformation develops self-affine roughness over almost four orders of magnitude in scale. The Hurst exponent $H$ of one-dimensional surface profiles is initially found to decrease with increasing strain and then stabilizes at $H \approx 0.75$. By analyzing their statistical properties we show that the one-dimensional surface profiles can be mathematically modelled as graphs of a fractional Brownian motion. Our findings can be understood in terms of a fractal distribution of plastic strain within the deformed samples