248 research outputs found
MANAJEMEN DAYA PADA PENEL SURYA BATERAI STAND-ALONE MENGGUNKAN MAXIMUM POWER POINT TRACKING ALORITMA BERBASIS P&O
Energy plays a very important role in human life today, particularly electrical energy. Petroleum has so far been the main source of energy used in Indonesia. One of the most potential renewable energy sources to be applied in Indonesia is the use of solar energy. Sunlight that reaches the earth's surface can be converted into electrical energy using solar cells or photovoltaic arrays. Solar energy is converted into electrical energy with an efficiency of 18%. This figure decreases further when the energy is used for electrical appliances due to voltage regulators, batteries, cables, and inverters, reducing it to around 10-15%. One way to keep solar cells working at their optimal point is to apply the Maximum Power Point Tracking (MPPT) algorithm. Therefore, in this research, a battery charging strategy on a standalone solar panel system based on Multi-Loop PI control is used, employing two DC-DC converters divided towards the load and the battery to maintain voltage on the DC bus and current during battery charging, with an inverter used to convert DC to AC current for the load using PI control
Endoscopic Resection and Post-Operative Brachytherapy in the Treatment of Sinonasal Melanoma
Background: Sino-Nasal Melanomas (SNM) are rare, aggressive tumours often associated with a poor prognosis due to advanced stage disease at presentation. Mean 5-year survival is 0-46%. Various treatment modalities are used in the management of SNM. Surgery is regarded as the primary treatment modality, but therapy remains controversial. Complete resection is a surgical challenge and it is often impossible to achieve adequate margins due to the fact that tumour often abuts vital anatomical structures. Incomplete resection has been shown to be a predictor of poor survival. Harris et al. (2014) were the first to report on the use of post-operative brachytherapy in an attempt to prevent local recurrence after endoscopic resection of SNM. Methods: A retrospective analysis of all patients undergoing endoscopic resection of SNMs and receiving adjuvant brachytherapy in a single surgeon’s practice between August 2004 and May 2014 was carried out. Outcome measures included local control rate and 5-year overall survival estimated by Kaplan-Meier analysis. The incidence of regional and distal recurrence (metastases) was calculated Results: Five cases of sinonasal melanoma (3 males 2, females) were managed with endoscopic resection and adjuvant brachytherapy. Patients were followed up for a median duration of 61 months (32-154 months) following adjuvant Brachytherapy. Local control was achieved in four out of five patients (80%). Three out of five patients developed distant metastasis. Median time to metastasis was 54 months. One patient received immunotherapy after diagnosis of distant metastasis (BRAF positive). Three out of five patients (60%) died from the complications of distant metastases of sinonasal melanoma. Median survival time following adjuvant Brachytherapy was 61 months (32-154 months). Five-year survival rate was 40% (95% CI 5.2% - 75.3%). Conclusion: This is the only case series describing the use of brachytherapy following endoscopic resection of sinonasal melanoma. Our case series, albeit small, describes a local control rate and 5-year survival comparable with the best reported in the literature. Adjuvant brachytherapy represents a novel approach and potentially a useful addition to the adjuvant therapy armamentarium. The advantages of brachytherapy include a favourable side-effect profile and a shorter duration of treatment, while delivering a dose of radiation similar to that of Conventional Radiotherapy. Further studies are necessary to define the role of brachytherapy in sinonasal melanoma
EXPLORING THE BENEFITS OF ENGLISH ENTERTAINMENT EXPOSURE AS LANGUAGE ACQUISITION
Abstract: English proficiency has become significant factor in global communication and development and the widespread of technology increases the exposure of English language. Therefore, it is important to conduct study on how English media and entertainment exposure can promote English language skills. This study conducted using descriptive qualitative method with semi structured interview through WhatsApp voice note on 5 students of English department to identify the benefit of English entertainment such as video, music and English based text on English skills. The results show that all the students give positive responses. It is also confirmed that watching English movies facilitates students with authentic material that develops pronunciation, speaking fluency and listening skills with the help of English subtitles. Regarding to English songs the students mainly benefited through flexibility of using music, repeated words and lyric that promotes listening skills and vocabulary knowledge and retention while English text provides learner with wide array of vocabulary that will help students to develop their vocabulary knowledge and well written language structures and patterns that promotes writing skills and grammar. It is suggested to directs the students to be exposed in English through entertainment outside the class to promote their language skills.Key Words: English Entertainment, Benefits, Language Acquisitio
Geotechnical Properties for Soil Alghlabia Area in Diyala Governorate /North Baghdad/ Iraq
يهدف البحث الى ايجاد الخواص الجيوتكنيكية لتربة منطقة الغالبية المجاورة لهبهب التابعة لقضاء الخالص في محافظة ديالى - شمال شرق العراق، 17كم عن المنطقة، 46 كم عن مركز بغداد ، جمعت (5) نماذج ولخمسة مواقع في المنطقة . تبين الخواص الفيزيائية ان انواع الترب هي CL-ML,CL، طبقا لتصنيف المواصفات الامريكية ، وقيم الفعالية اعتيادية ، واعتمادا على L.L.وP.I. ومرتسم اللدونة انواعها ML،ML, CL-ML، ML، CL-MLعلى التوالي , بينما قيم الوزن النوعي متقاربة كون الترسبات مصادرها متشابهة, وتختلف قيم المسامية ونسبة الفراغات لثلاث مواقع ، تتقارب قيم الكثافة الجافة مع القيم القياسية . نتائج الخواص الميكانيكية ، قيم القص المباشر C و Ø ضمن الحدود الطبيعية للأطيان ، بينما قيم الانضمام اعتيادية ،وكذلك Pc، Cc، Sc ، ثم O.C.R. اكبر من 1 والتي تؤشر الانضمام المفرط ، وقيم التحاليل الكيميائية ، تجاوزت 0.5% T.D.S.، واقل من0.5% للجبسم والمواد العضوية، بينت نتائج pH ان التربة قاعدية ، طبقا للمواصفات، فهي ملائمة لمختلف المنشآت الهندسية . The research aims, to find out the geotechnical properties for soil Alghlabia area, locate within the near (HibHib) in Khalis/Diyala, northeast of Iraq. Just (17) km from the district center, (46) km from the center of Baghdad, five samples were taken from five sites in the area. Physical properties show that the types of soils, (CL-ML, CL) according to the classification. Activity of soil values normal, Liquid limit (L.L.) and plasticity index(P.I)and depending on plasticity chart the soils type respectively (ML, ML, CL-ML, ML, CL-ML), while the specific gravity (Gs) values converge, because resources of same sediments, porosity (n%) & voids ratio (e0) values for three site are different , dry density (ρd) values approximate for values set by Mechanical properties, direct shear test show that the values cohesion C & angle of internal frication (Ø) are with the natural range of known values of clay soils, while the consolidation test for sites shows that the normal values, Pre consolidation pressure (pc), compression index (cc) & swelling index (cr), then the values of Over Consolidation ratio (OCR) greater than 1, which indicate over consolidation soils. Chemical analysis .Total dissolve salts (T.D.S) for sites is higher exceeded 0.5%, Gypsum content less than 0.5%.Organic Matter content (O.M.C) less than (0.5%)& (pH) the result show that the soil is basic. According to standard, it was suitable, for different Engineering construction
Pengaruh Kualitas Produk, Harga, Pemulihan Layanan Terhadap Kepuasan Pelanggan (Studi pada Konsumen Online di Bukittinggi)
Trust Evaluation of a System for an Activity
International audienceWhen users need to perform a digital activity, they evaluate available systems according to their functionality, ease of use, QoS, and/or economical as- pects. Recently, trust has become another key factor for such evaluation. Two main issues arise in the trust management research community. First, how to de- fine the trust in an entity, knowing that this can be a person, a digital or a physical resource. Second, how to evaluate such value of trust in a system as a whole for a particular activity. Defining and evaluating trust in systems is an open problem because there is no consensus on the used approach. In this work we propose an approach applicable to any kind of system. The distinctive feature of our pro- posal is that, besides taking into account the trust in the different entities the user depends on to perform an activity, it takes into consideration the architecture of the system to determine its trust level. Our goal is to enable users to have a per- sonal comparison between different systems for the same application needs and to choose the one satisfying their expectations. This paper introduces our approach, which is based on probability theory, and presents ongoing results
System Modeling and Trust Evaluation of Distributed Systems
International audienceNowadays, digital systems are connected through complex architectures. These systems involve persons, physical and digital resources such that we can consider that a system consists of elements from two worlds, the social world and the digital world, and their relations. Users perform activities like chatting, buying, sharing data, etc. Evaluating and choosing appropriate systems involve aspects like functionality, performance, QoS, ease of use, or price. Recently, trust appeared as another key factor for such an evaluation. In this context, we raise two issues, (i) how to formalize the entities that compose a system and their relations for a particular activity? and (ii) how to evaluate trust in a system for this activity? This work proposes answers to both questions. On the one hand, we propose SOCIOPATH, a metamodel based on first order logic, that allows to model a system considering entities of the social and digital worlds and their relations. On the other hand, we propose two approaches to evaluate trust in systems, namely, SOCIOTRUST and SUBJECTIVETRUST. The former is based on probability the- ory to evaluate users’ trust in systems for a given activity. The latter is based on subjective logic to take into account uncertainty in trust values
Problematika Pendidikan Agama Islam di Universitas Khairun Ternate
The aim of the research is to look at the problems of Islamic religious education in Public Higher Education and solutions to these problems in this paper focusing more on State Universities in North Maluku Province, namely Khairun University, PAI hopes that colleges and universities can understand and realize religious education courses as a compulsory subject that is the spirit of fostering student personality and the spiritual foundation for the development of their respective fields of knowledge. In this study the method used is the method that researchers use in this study is phenomenology. The phenomenological approach is an approach based on the idea and assumption that human experience is obtained through the interpretation of objects, people, situations and events, but their interpretation. The results of the research are that the development of PAI is an implication of the learning process on campus, requiring the development of faith values in students' attitudes and behavior that can be applied in life. The development of PAI at PTU needs to be updated starting from the cognitive learning process to instilling Islamic values in students so that they can have a positive impact on student self-development
Pengaruh kompensasi finansial dan kompensasi non finansial terhadap kinerja guru honorer di Yayasan Al-Ittihad Cianjur
Persaingan dunia kerja saat ini semakin kompetitif, karena itu setiap perusahaan, yayasan harus mampu ,mengolah sumber daya yang di milikinya dengan efektif dan efisien agar bertahan dan berkembang. Tujuan penelitian ini untuk mengetahui pengaruh positif Kompensasi Finansial terhadap kinerja, pengaruh positif kompensasi non finansial terhadap kinerja dan pengaruh positif Kompensasi finansial dan kompensasi non finansial secara simultan terhadap Kinerja.
Metode yang dipakai dalam penelitian ini adalah Deskriptif Asosiatif. Dengan instrumen penelitian berupa kuesioner. Penelitian ini adalah penelitian sample dengan jumlah respunden sebanyak 54 responden. Uji validitas instrumen menggunakan Korelasi Person sedangkan uji reliabilitasnya menggunakan kaidah reliabilitas Triton. Teknik analisis yang digunakan adalah uji regresi linier berganda. Hasil penelitian menemukan bahwa kompensasi finansial berpengaruh positif terhadap kinerja, kompensasi non finansial berpengaruh positif terhadap kinerja, kompensasi finansial dan kompensasi non finansial secara simultan berpengaruh positif terhadap kinerja.
Hasil dari analisis regresi linear berganda diketahui bahwa Kompensasi Finansial dan kompensasi non finansial berpengaruh positif dan signifikan terhadap kinerja. Hasil hipotesis dengan uji t dapat diketahui dengan nilai signifikan 0,000 lebih kecil dari 0,05 dan dari nilai thitung sebesar 9,464 lebih besar dari ttabel 2,007. Hal ini menunjukan bahwa H1 diterima artinya kompensasi finansial (X1) berpengaruh positif terhadap kinerja.Dan nilai signifikan 0,000 lebih kecil dari 0,05 dan dari nilai thitung sebesar 5,355 lebih besar dari ttabel 2,007. Hal ini menunjukan bahwa H2 diterima artinya kompensasi non finansial (X1) berpengaruh positif terhadap kinerja. Hasil analisi uji F diketahui dari nilai signifikansinya 0,000 lebih kecil dari 0,05 dan nilai fhutung 544,756 dan nilai ftabel 3,18 hal ini menunjukan H3 diterima. Artinya komopensasi finansial dan kompensasi non finansial secara simultan berpebgaruh positif terhadap kinerja. Dan hasil perhitungan koefisien determinasi menghasilkan R2 sebesar 95,5. Hal ini menunjukan bahwa variabel kompensasi finansial dan kompensasi non finansial berpengaruh sebesar 95,5% sedangkan sisanya dipengaruhi oleh variabel lain yang tidak diteliti oleh peneliti
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