1,721,031 research outputs found

    KONSEP PELESTARIAN TUMBUHAN DALAM AL-QUR’AN

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    ABSTRAK Skripsi yang berjudul “Konsep Pelestarian Tumbuhan dalam Al-Qur’an”, ini ditulis oleh Fakhri Muhammad, Jurusan Ilmu Al-Qur’an Dan Tafsir, fakultas ushuluddin, adab dan dakwah dibimbing oleh Dr.H. abad Badruzzaman, Lc., M.Ag. Kata Kunci: Al-Qur’an , pelestarian, tumbuhan Penelitian ini dilatar belakangi oleh keprihatinan penulis tentang maraknya pengerusakan alam yang dilakukan oleh tangan jahil manusia dalam memanfaatkan umbuhan. Tumbuhan dalam peranannya mempunyai manfaat yang sangat penting erhadap keberlangsungan makhluk hidup, baik manusia maupun binatang. Tanpa umbuhan, manusia dan hewan tidak akan hidup karena hanya tumbuhan yang mampu membuat makanannya sendiri tanpa memerlukan keterikatan dengan makhluk lain. Sehingga saking pentingnya tumbuhan, Al-Qur’an menawarkan beberapa cara dalam menjaga kelestarian tumbuhan agar manusia dan hewan agar etap hidup. Skripsi ini membahas pelestarian tumbuhan dalam perspektif al-Qur’an, dengan pokok permasalahannya yaitu: (1) Bagaimana wawasan umum tentang pelestarian tumbuhan dalam Al-Qur’an, (2) Bagaimana fungsi tumbuhan terhadap keberlangsungan makhluk hidup, (3) Bagaimana upaya pelestarian tumbuhan dalam perspektif Al-Qur’an. Penelitian ini merupakan penelitian kepustakaan (library research) atau penelitian pustaka. Metode pengumpulan data yang digunakan adalah metode dokumentasi, sedangkan metode analisis yang digunakan adalah metode maud}ui. Hasil dari penelitian ini menunjukkan: (1) Manusia sebagai khalifah di bumi mempunyai tanggungjawab dan peran dalam melestrikan tumbuhan. Pelestarian umbuhan adalah proses, cara, perbuatan melestarikan; perlindungan dari kemusnahan dan kerusakan, pengawetan, konservasi, pengelolaan sumber daya alam yang menjamin kemanfaatannya secara bijaksana dan menjamin kesinambungan persediaannya dengan tetap memelihara dan meningkatkan kualitas nilai dan keanekaragaman. (2) Menurut Al-Qu’an fungsi tumbuhan terhadap keberlangsungan makhluk ada beberapa diantaranya yaitu: sebagai sumber makanan bagi mahkluk hidup, bahan pengobatan, penyuplai oksigen bagi mahkluk hidup, peresap air di dalam tanah, dan hiburan bagi manusia dan binatang. (3) Dalam upaya untuk melestarikan tumbuhan, Al-Qur’an menawarkan beberapa cara antara lain: pemanfaatan tanah tandus, tidak berlebihan dalam mengeksploitasi tumbuhan, menghargai keberlangsungan tumbuhan, melakukan konservasi, melakukan penghijauan di sekitar pusat kota

    Emanfaatan Serbuk Kaca Sebagai Substitusi Sebagian Pasir Pada Campuran Beton Dan Bondcrete Ditinjau Dari Kuat Tarik Belah Beton (Studi Penelitian)

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    Perkembangan teknologi dalam kehidupan manusia setiap tahun selalu meningkat. dan memberikan dampak positif dan negatif terhadap kehidupan sehari-hari. Dampak negatif yang paling utama adalah limbah kaca yang banyak dihasilkan dari kehidupan masyarakat terutama dikota besar. Tujuan penelitian ini untuk meihat sejauh mana pengaruh penggunaan kaca sebagai pengganti agregat dalam beton dan dengan penambahan bondcrete pada campuran beton dapat menaikkan atau menurunkan kuat tarik belah pada beton,hasil pengujian kuat tarik belah beton normal dan beton menggunakan serbuk kaca sebagai substitusi sebagian agregat halus dengan persentase 0%, 6%, 8%, 10% dan bahan tambah bondcrete 2%. Pengujian yang dilakukan adalah kuat tarik belah yang dilakukan saat benda uji berumur 28 hari. Dari hasil pengujian diperoleh kuat tarik belah beton dengan bondcrete meningkat 5,06% pada variasi serbuk kaca 10% yaitu 3,73 Mpa dibanding kuat tarik belah normal yaitu 3,54 Mpa

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed

    Variations on the Author

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    “Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship

    Appropriate Similarity Measures for Author Cocitation Analysis

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    We provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis

    Dispelling the Myths Behind First-author Citation Counts

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    We conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more sophisticated methods

    Optimal Battery Energy Storage System Sizing and Placement in Low Voltage Distribution Network: Emerging robust electric vehicle charging using photovoltaics

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    Electric Vehicles (EVs) provide a promising sustainable clean mode of transportation with much fewer emissions compared to the traditional Internal Combustion Engine (ICE) vehicles. However, this can only be considered true if the energy sources used for charging EVs are also from clean energy form. Various Renewable Energy Sources (RES) are available to provide the EVs charging demand. Nevertheless, due to intermittency power generation characteristic of RES, there is a high risk of supply and demand power mismatch. A grid-connected topology system is commonly used as a backup for lack or over power supply from RES generation. Even though, this configuration may lead to new problems of under/over voltage issues and maximum transformer/lines loading capacity due to RES fluctuation power production. The storage system is considered necessary to be installed in the system as a buffer of the power mismatch and also reducing the grid stress. Excellent approximation of storage sizing and placement is mandatory to provide satisfactory influence to the overall system technically and economically.This study proposes optimization strategy for optimal battery sizing and placement with optimal power management system in the EVs charging station using photovoltaics (PV) power in a low voltage distribution network using Mixed Integer Linear Programming (MINLP) algorithm. The lithium-ion battery is considered in this project because of its relatively high power and energy density characteristic along with low self-discharging. The radial low voltage CIGRE benchmark is adopted as a model topology to evaluate the performance of the proposed optimization strategy. Dynamic daily electricity price, residential load, and PV power profile of the Netherlands are taken into account in this project. Furthermore, the research project implements several case studies using DICOPT (Discrete and Continuous OPTimizer) solver in GAMS (General Algebraic Modelling System) software with MATLAB interfacing. As the main result, proper EVs charging strategy with optimal battery sizing and placement with the appropriate power management system is successfully maintaining the system away from the grid violation while at the same time reducing the total cost of the system.Keywords: EV-PV charging, optimal battery sizing and placement, MINLPElectrical Engineering | Sustainable Energy Technolog

    Author Index

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    koamabayili/VECTRON-author-checklist: VECTRON author checklist

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    We have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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