777 research outputs found

    Interconnected autonomous microgrids in smart grids with self-healing capability

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    In order to minimize the number of load shedding in a Microgrid during autonomous operation, islanded neighbour microgrids can be interconnected if they are on a self-healing network and an extra generation capacity is available in Distributed Energy Resources (DER) in one of the microgrids. In this way, the total load in the system of interconnected microgrids can be shared by all the DERs within these microgrids. However, for this purpose, carefully designed self-healing and supply restoration control algorithm, protection systems and communication infrastructure are required at the network and microgrid levels. In this chapter, first a hierarchical control structure is discussed for interconnecting the neighbour autonomous microgrids where the introduced primary control level is the main focus. Through the developed primary control level, it demonstrates how the parallel DERs in the system of multiple interconnected autonomous microgrids can properly share the load in the system. This controller is designed such that the converter-interfaced DERs operate in a voltage-controlled mode following a decentralized power sharing algorithm based on droop control. The switching in the converters is controlled using a linear quadratic regulator based state feedback which is more stable than conventional proportional integrator controllers and this prevents instability among parallel DERs when two microgrids are interconnected. The efficacy of the primary control level of DERs in the system of multiple interconnected autonomous microgrids is validated through simulations considering detailed dynamic models of DERs and converters

    TA : Rancang Bangun Sistem Pendeteksi Kematangan Buah Apel Manalagi Menggunakan Raspberry Berdasarkan Warna Kulit

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    Buah apel adalah buah yang sangat difavoritkan pada pecinta apalagi didaerah pegunungan sudah menjadi produksi buah apel manalagi. Buah apel manalagi mempunyai warna hijau dan hampir sama antara warna yang satu dengan yang lainnya. Buah apel yang diliat secara langsung dalam segi tingkat kematangan tidak ada bedanya. Karena alasan itulah penulis membuat alat untuk mendeteksi tingkat kematangan buah apel dimana proses pendeteksian menggunakan Raspberry dan kamera. Untuk meningkatkan warna penulis memberikan lampu pijar dan indikator kematangan menggunakan lampu led yang sudah dimodifikasi. Hasil pada uji coba, alat ini memiliki tingkat keakuratan yang tinggi dikarenakan memakai metode First Order Texture. Uji coba dilakukan sebanyak 20 kali dan hasilnya sesuai pada kondisi kenyataan. Dari data yang didapat dalam 20 percobaan mendapatkan tingkat keberhasilan 95% sedangkan untuk tingkat error adalah 5%

    Analisis Pengendalian Kualitas Keripik Apel Pada Proses Produksi Menggunakan Metode Six Sigma (Studi Kasus Di Ukm Arjuna 999 Kota Batu, Jawa Timur)

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    Keripik adalah makanan ringan yang tergolong jenis makanan crackers, yaitu yang bersifat kering dan renyah (crispy). Pada UKM Arjuna 999 yang memproduksi keripik apel masih ditemukan cacat pada produksinya, yaitu bentuk keripik apel tidak bulat penuh/remuk, keripik apel berwarna coklat kehitaman/gosong, dan kemasan yang tidak tertutup rapat. Tujuan penilitian ini untuk menganalisis kapabilitas dan mengevaluasi faktor-faktor yang menyebabkan terjadinya penyimpangan produk keripik apel pada tahapan proses perajangan, penggorengan, dan pengemasan. Metode Six Sigma dapat digunakan untuk mengukur kapabilitas, menghitung nilai sigma dan menganalisis faktor-faktor yang menyebabkan cacat pada proses perajangan, penggorengan, dan pengemasan, serta membuat usulan untuk perbaikan kualitas. Sampel yang diambil pada proses perajangan dan penggorengan sebanyak 150 sampel dengan 10 kali pengambilan dan pada proses pengemasan sebanyak 35 sampel dengan 10 kali pengambilan. UKM Arjuna 999 memiliki indeks kapabilitas sigma untuk proses yang telah distabilkan sebesar 2,20 untuk proses perajangan dengan nilai Final Yield untuk proses yang telah distabilkan sebesar 76,067 %, nilai sigma 2,52 untuk proses penggorengan dengan nilai Final Yield untuk proses yang telah distabilkan sebesar 84,74 %, dan nilai sigma 2,65 untuk proses pengemasan dengan nilai Final Yield untuk proses yang telah distabilkan sebesar 87,428 %. Semua nilai Final Yield berada di atas rata-rata industri Indonesia dengan nilai ≥ 69,15%. Faktor-faktor yang menjadi penyebab cacat pada penggorengan keripik apel yaitu manusia, metode dan lingkungan. Saran yang dapat diberikan berdasarkan hasil penelitian adalah perlu dilakukan perbaikan pada fasilitas kerja serta rekomendasi pemasangan CCTV untuk memantau kinerja karyawan

    EPISTEMOLOGI TAFSĪR QUR`ᾹN KARĪM KARYA MAHMUD YUNUS

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    This article explains the thoughts of Mahmud Yunus in studying the epistemology of Tafsīr Qur`ān Karīm which is in Indonesian, complete in 30 chapters, to test its truth or to what extent the interpretation can be justified. According to the author, what is interesting to discuss: first, what are the sources used as references Mahmud Yunus in Tafsīr Qur`ān Karīm, secondly, what is the method of Mahmud Yunus in writing his book and thirdly, what is the validity of Mahmud Yunus's interpretation in Tafsīr Qur`ān Karīm. In order to achieve this purpose, this study uses analysis-based library research methods. The results of this study show: that the sources of interpretation referred to by Mahmud Yunus in Tafsīr Qur`ān Karīm include an-naql and al-aql sources, namely the Qur’an, hadith, qaul companions, qaul tabiin, holy books and opinions of scholars, reasoning, Arabic, scientific discoveries or scientific theories, and reality. However, the use of the al-'aql source is more dominant in its interpretation so that it is classified into the interpretation of bi al-ra'yi. Regarding the validity of his interpretation, Mahmud Yunus adheres to the correspondence theory of truth in which his interpretation of the kauniyah verses can be said to be in accordance with reality and scientific facts. Besides that, he also adheres to a pragmatic theory in which he tries so that the product of his interpretation can be an alternative solution for solving socio-religious problems faced by society

    Mahmud Bin Abdülaziz’in “Makasidü’l-Edvar” adlı eseri

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    Mahmud b. Abdülaziz, 15. yüzyılın sonu ve 16. yüzyılın başında yaşamış, hayatını sarayda ser-mutribân olarak geçirmiş, kuvvetli bir mûsikîşinas ve yazardır. Dedesi ve babası da çok ünlü mûsikî bilginlerinden olan Mahmud b. Abdülaziz, dedesi ve babası gibi Safiyyüddin Urmevî’den itibaren ortaya konulan 17’li ses sistemine dair eserini yazmıştır. Makāsidü’l-Edvâr adlı eserinde ses sistemine dair kendi dönemine kadar tespit edilmiş bütün bilgilere kısaca değinmiş ve o bilgilere bir takım ilâvelerde bulunmuştur. İcat edilmiş devirlerden bahsetmiş ve onlara kendi icat ettiği devirleri de ilâve etmiştir. Mahmud b. Abdülaziz eserinde kendisine ait olan bestelerden de bahsetmiştir fakat nota kaydı vermemiştir. Ayrıca yine kendisinin icat ettiği enstrumandan bahsetmiştir. Mahmud b. Abdülaziz’in Makāsidü’l-Edvâr adlı eseri 15. yüzyılda mûsikîye dair son kitap olması itibariyle önemlidir. İçerdiği bilgilerin o dönemin gelmiş olduğu noktayı net olarak ortaya koyması sebebiyle bu önem daha da artmaktadır. Günümüzde de kullanılan bir sistem olan 17’li ses sistemi hakkındaki bu eser makamların, perdelerin, aralıkların, dizilerin, usûllerin ve bazı enstrumanların hakkında bilgiler ihtiva ettiği için o dönemin müziğini anlamak açısından önemli bir çalışmadır.Mahmut b. Abdulaziz was a great musician and a great author who lived at the end of the 15th century and at the beginning of 16th century; he spent his life at the Ottoman palace as a head musician. Mahmud b Abdulaziz whose grandfather and father also were very famous scholar of music, like his grandfather and his father, wrote a book about the 17 sound system set out by Safiyyüddin Urmevi and by those who came after him. In his book Makāsidü’l-Edvar Mahmud b. Abdulaziz examined the works written before him until his period about the sound system and made a number of additions. He mentioned the makams invented before him and added his own makams he had invented. Mahmud b. Abdulaziz mentioned in his work his own compositions, but did not record the note. He mentioned also the instrument he had invented. The Makāsidü’l-Edvâr of Mahmud b. Abdulaziz is a very important book from the point of view that it is the last book written about the music in15th century. It contains much information about that period; this increases clearly its importance even more. This book gives in formations about the 17 sound system, which is used also nowadays notes, intervals, sequences, procedures and it contains information about some of the instruments; therefore it is an important study in order to understand the music of that era

    PATRIOTISME DALAM SYAIR BITAQAH HAWIYYAH KARYA MAHMUD DARWISY

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    Poetry is a literary media that is very dense of meaning. Poetry is also a medium for conveying ideas of a poet to be conveyed to the reader. In this paper the author will convey the explanation of the meaning poem “Bit}a>qah Hawiyyah†by Mahmud Darwisy using the study of semiotics. In this paper the presentation uses qualitative methods by library research and uses Riffaterre\u27s semiotic theory. The formulation of the problem in this paper is how the form of the unity of meaning structure in the poem “Bit}a>qah Hawiyyah†by Mahmud Darwisy using Riffaterre\u27s semiotic study. The purpose of this study was to determine the form of the unity of meaning structure in the poem “Bit}a>qah Hawiyyah†by Mahmud Darwisy using Riffaterre\u27s semiotic study. The result of this research is the form of the unity of meaning structure in the poem “Bit}a>qah Hawiyyah†by Mahmud Darwisy is Nationalism and Patriotism which manifests in pride, love and maintenance of identity, homeland and ownership.Puisi merupakan media sastra yang sangat padat akan sebuah makna. Puisi juga sebagai media penyampai ide atau gagasan seorang penyair yang ingin disampaikan pada pembaca. Pada tulisan ini penulis akan menyampaikan paparan pemaknaan puisi “Bitaqah Hawiyyah†karya Mahmud Darwisy dengan menggunakan kajian semiotika. Pada tulisan ini pemaparan menggunakan metode kualitatif dengan cara penelitian pustaka dan memakai teori semiotika Riffaterre. Rumusan masalah pada tulisan ini yaitu bagaimana bentuk kesatuan struktur makna pada puisi “Bitaqah Hawiyyah†karya Mahmud Darwisy dengan menggunakan kajian semiotika Riffaterre. Tujuan penelitian ini adalah mengetahui bentuk kesatuan struktur makna pada puisi “Bitaqah Hawiyyah†karya Mahmud Darwisy dengan menggunakan kajian semiotika Riffaterre. Hasil dari penelitian ini adalah bentuk kesatuan struktur makna pada puisi puisi “Bitaqah Hawiyyah†karya Mahmud Darwisy yaitu Nasionalisme dan Patriotisme yang terwujud pada kebanggaan, kecintaan dan pemertahanan pada identitas, tanah air dan kepemilikan

    Komunitas Adat Kampung Mahmud di Tengah Arus Perubahan

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    AbstrakKampung Mahmud adalah sebuah kampung adat yang masyarakatnyateguh memegang dan melaksanakan tradisi yang diwarisi dari leluhurnya. Namunarus modernisasi ternyata membawa dampak terhadap kehidupan sosial budayamasyarakat setempat yang sudah mulai menampakkan perubahan. Beberapatradisi yang semula dipegang teguh oleh warga komunitas Kampung Mahmud, kinimulai melonggar. Komunitas adat ini berdomisili di wilayah Kabupaten Bandung.Penelitian ini mencoba mengkaji perubahan-perubahan pada aspek-aspek sosialdan budaya yang terjadi di kalangan komunitas adat Kampung Mahmud. Metodepenelitian yang digunakan adalah metode penelitian kualitatif dengan pendekatandeskriptif analisis. Pengumpulan data dilakukan melalui wawancara terbuka denganbeberapa tokoh masyarakat dan warga komunitas terpilih, serta pengamatan langsungdi lapangan (observasi). AbstractKampung (village) Mahmud is an adat kampung that strictly preserves theircustoms inherited from their ancestors. But, modernization has given strong impactsto the community in terms of socio-cultural life which has gradually changed. Someof their traditions have become loosened. This adat commuity lives in KabupatenBandung. The research tries to study socio-cultural changes that has occurredamongst adat community of Kampung Mahmud. The author has conducted aqualitative method with descriptive approach. Data were collected through openedinterview with several key persons and selected community member as well asobservation.</jats:p

    Corrigendum: Anemia detection through non-invasive analysis of lip mucosa images

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    In the published article, there was an error in the author list. The new requested author order is: Shekhar Mahmud1, Turker Berk Donmez2, Mohammed Mansour3*, Mustafa Kutlu3 and Chris Freeman41 Department of Systems Engineering, Military Technological College, Muscat, Oman 2 Department of Biomedical Engineering, Sakarya University of Applied Sciences, Serdivan, Sakarya, Türkiye 3 Department of Mechatronics Engineering, Sakarya University of Applied Sciences, Serdivan, Sakarya, Türkiye 4 Electronics and Computer Sciences, University of Southampton, Southampton, United Kingdom The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated. Copyright © 2023 Mahmud, Donmez, Mansour, Kutlu and Freeman

    Personal reflection

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    Contribution to the 30th Anniversary of the Torture Journal by Dr. Mahmud Sehwail. The author brings an account of his life trajectory as a psychiatrist born and working in Palestine. The author dives in his early memories, including those of his brother's death, that shaped his character and the way he lives his rejection of occupation and violence. Besides the early institutional beginnings of the TRC Center in Ramallah, the author describes the subtle forms of the daily abuse that a doctor working in Palestine must endure

    Doctrine of Love in Writings of 14th-Century Persian Mystic Mahmud Kashani

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    The article is devoted to the work of Mahmud Kashani (d. 735/1334-35), who was a sheikh of the Suhravardiya Sufi order and the author of several significant works. The object of analysis was one of the parts of his most famous work — the prose treatise “The lamp that indicates the true path, and the key to a sufficient amount [of mystical knowledge]”. The article deals with the religious views and scientific heritage of Mahmud Kashani. A commented translation of part of the first section “On Love” from the tenth chapter “Explanation of mystical states” of the specified work is proposed. Since Mahmud Kashani is also credited with the poem “Treasures of Secrets and Symbols of the Righteous”, dedicated to the psychological aspects of mystical love, we have also translated one of its chapters. Comparison of fragments of these works shows significant discrepancies in the explanation of love, which may be due to the fact that the author expounds the concept of love of ascetic Sufism in the first essay, and Sufism “based on love” in the second. The second direction goes back to the composition of the “Revelation of Love” by the Persian mystical philosopher Ahmad Ghazali. It is also possible that ‘Izz ad-Din Mahmud is not the author of the poem “Treasures of Secrets…”
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