Search from the Journals, Articles, and Headings
Advanced Search (Beta)
Loading...
Loading...
Loading...
Loading...
Loading...
Loading...

باب دوم: ماحولیاتی تحفظ کا مطالعہ

ماحولیات کا تعارف

ماحول کو عربی زبان میں "بیئۃ" کہا جاتا ہے۔ ا س کا مادہ "بوأ " ہے۔

صاحب "معجم الوسیط" رقمطراز ہیں:

" (البيئة) الْمنزل وَالْحَال وَيُقَال بيئة طبيعية وبيئة اجتماعية وبيئة سياسية"[1]

 احمد بن خلیل اپنی تالیف "کتاب العین" میں کرتے ہیں:

"بوأ:الباءةُ والمَباءة: منزل القوم حين يَتَبَوَّءُونَ في قِبَلِ وادٍ، أو سَنَد جَبَلٍ، ويقال: [بل هو] كلّ منزلِ يَنْزِلُه القَوْم، يقال: تَبَوَّءُوا منزلا.. وقال تعالى: وَلَقَدْ بَوَّأْنا بَنِي إِسْرائِيلَ مُبَوَّأَ صِدْقٍ "[2]

 ابو نصر فارابی ؒ لکھتے ہیں:

"[بوأ]المباءة: منزل القوم في كل موضع، ويسمى كِناس الثور الوحشي: مباءةً "[3]

احمد بن فارس الرازی رقمطراز ہیں:

" (بَوَأَ) الْبَاءُ وَالْوَاوُ وَالْهَمْزَةُ أَصْلَانِ: أَحَدُهُمَا الرُّجُوعُ إِلَى الشَّيْءِ، وَالْآخَرُ تَسَاوِي الشَّيْئَيْنِ.فَالْأَوَّلُ الْبَاءَةُ وَالْمَبَاءَةُ، وَهِيَ مَنْزِلَةُ الْقَوْمِ"[4]

ابن الاثیرؒ (م606ھ) ماحول کی لغوی تشریح فرماتے ہیں:

"مَنْ كَذب عَلَيَّ مُتَعَمِّداً فَلْيَتَبَوَّأْ مَقعده مِنَ النَّارِ قَدْ تَكَرَّرَتْ هَذِهِ اللَّفْظَةُ فِي الْحَدِيثِ، وَمَعْنَاهَا لِيَنْزِلْ مَنْزِلَه مِنَ النَّارِ، يُقَالُ بَوَّأَهُ اللَّهُ مَنْزِلا، أَيْ أسْكنَه إيَّاه، وتَبَوَّأْتُ منزِلا، أَيِ اتَّخَذْته، والمَبَاءَة: الْمَنْزِلُ"[5]

مذکورہ بالا مباحث سے معلوم ہوتا ہے کہ ٹھکانہ، مسکن، ارد گرد کے مقامات، رہائش کا مقام وغیرہ ماحول کے مفہوم میں شامل ہیں۔ "بَوَّأَ" کا معنی ٹھکانہ، قیام کی جگہ، منزل، مسکن، رہنے سہنے کامقام یعنی ماحول ہے۔ماحول اتنا اہمیت کا حامل ہے کہ کتاب اللہ میں بھی ماحول کو مختلف زاویوں سے ذکر کیا گیاہے۔ کلام ِ ربانی میں ماحول کے تذکرہ سے اس کی افادیت کا اندازہ کیا جاسکتا ہے۔

 ارشاد باری تعالیٰ ہے:

" وَالَّذِيْنَ هَاجَرُوْا فِي اللّٰهِ مِنْۢ بَعْدِ مَا ظُلِمُوْا لَنُبَوِّئَنَّهُمْ...

Evaluation of Objectives of Population Education Integrated in School Curriculum on the Basis of Islamic Philosophy

Pakistan emerged on the map of world in 1947 as an Islamic state on the basis of two nation theory. Islam was the main binding force behind that unprecedented successful struggle. The inherent education system of Pakistan was greatly influenced by British and Indian education system. Since independence, various education policies and plans were formulated to align our education system with our philosophical foundation. During period 1983-1998, population education was integrated in school curriculum in three phases. The main objective of study was to evaluate the objectives of curricula on basis of Islamic philosophy. This study was delimited secondary school curriculum for class 1-10. The researcher used document analysis and expert review. The data obtained were tabulated, analyzed and interpreted statistically. The findings of study revealed that Population education remained a controversial area among curriculum developers.

Prediction Based Greedy Routing Strategies for Wireless Networks of Moving Objects

Calculation and prediction of link duration between two nodes connected, as to create networks for communication system has always been a main area of high degree of importance. With the introduction of Ad Hoc networking concept along with its emerging subsets like MANETs, VANETs and FLYNETs. The issue regarding the calculation and prediction of the node''s link with reference to time is becoming more challenging because of the requirements of different strategies in different scenarios. As well as the changing topology and high speed of node had a great impact of link duration analysis. Geographic routing algorithms have the potency to work with a large network without maintaining the routing table of a node with complete route information, thus decreased the routing overhead. These routing strategies are incredibly suitable for the networks created by the VANETs with their high speeds and changing topology characterization. A number of researchers are involved with the development of routing strategies for Vehicular Ad Hoc Networks (VANETs), which can cope up with the uncertainties of the scenarios associated with the variable speed and high dynamics change of network topologies. With the advent of IPv6 and cheap availability of GPS, system''s geographic routing is becoming a solution for the problem associated with the possibility of the successful routing in VANETs. Disadvantage associated with the geographic routing is its reliability associated with the precise requirement of position information of the node. These networks are quite hard to handle in terms of the presence of such hindrances or may prove to be much more cost effective. Furthermore, time lagging factor’s presence in the routing table of the neighboring node because of the movement of the node position information is a reality which cannot be denied. Hence, the pattern of movement of a node is another issue which should be taken into account before the selection of routing nodes. Opportunely, according to our analysis vehicle movement is not complicated in highway scenarios. By using this, the significant observation, we had designed a movement pattern which can simulate the nodes moving in the highway scenario. Data set of a project group had been used. Project group had gathered data on a high way for bi directional traffic. Roads are divided into 1000 meter segments as to observe the movement pattern and then analysis had been performed. Our highway scenarios are able to capture different events and also connect the vehicles on the road from each other. We have suggested a fresh approach for geographic routing, which exploits the predicted locations of vehicles. We have proposed a stable link duration technique based on the prediction method by using the heading direction and present speed of a vehicle. This can effectively reduce the requested frequency of position update. Special tool in MATLAB has been designed for the testing different scenarios of VANETs by using different entity based mobility models.
Asian Research Index Whatsapp Chanel
Asian Research Index Whatsapp Chanel

Join our Whatsapp Channel to get regular updates.