User-specific Skin Temperature-aware DVFS for Smartphones

Conference on Design Automation Test in Europe (DATE) (2015 : Grenoble, FRANCE)Skin temperature of mobile devices intimately affects the user experience. Power management schemes built into smartphones can lead to quickly crossing a user's threshold of tolerable skin temperature. Furthermore, there is a significant variation among users in terms of their sensitivity. Hence, controlling the skin temperature as part of the device's power management scheme is paramount. To achieve this, we first present a method for estimating skin and screen temperature at run-time using a combination of available on-device thermal sensors and performance indicators. In an Android-based smartphone, we achieve 99.05% and 99.14% accuracy in estimations of back cover and screen temperatures, respectively. Leveraging this run-time predictor, we develop User-specific Skin Temperature-Aware (USTA) DVFS mechanism to control the skin temperature. Performance of USTA is tested both with benchmarks and user tests comparing USTA to the standard Android governor. The results show that more users prefer to use USTA as opposed to the default DVFS mechanism

Sekolah Islam Diponegoro Surakarta Tahun 1966-2005

Penelitian ini membahas tentang Sekolah Islam Diponegoro Surakarta Tahun 1966-2005. Rumusan masalah penelitian ini adalah apa yang melatarbelakangi berdirinya Sekolah Islam Diponegoro Surakarta, bagaimana perkembangan Sekolah Islam Diponegoro Surakarta tahun 1966-2005, bagaimana kurikulum yang dikembangkan di Sekolah Islam Diponegoro Surakarta pada tahun 1966-2005, apa peranan Sekolah Islam Diponegoro Surakarta terhadap masyarakat Surakarta. Tujuan penelitian ini adalah untuk mengetahui latar belakang berdirinya Sekolah Islam Diponegoro Surakarta, mengetahui perkembangan Sekolah Islam Diponegoro Surakarta tahun 1966-2005, mengetahui kurikulum yang dikembangkan di Sekolah Islam Diponegoro Surakarta pada tahun 1966-2005 dan mengetahui peranan Sekolah Islam Diponegoro Surakarta terhadap masyarakat Surakarta. Penelitian ini memakai metode penelitian sejarah dengan teknik pengumpulan data menggunakan heuristik. Data yang diperoleh selanjutnya dikritik secara intern dan ekstern dengan dipadukan studi pustaka sehingga menghasilkan fakta-fakta historis. Fakta ini lalu dianalisis dan disusun dalam sebuah historiografi. Hasil penelitian dapat disimpulkan Yayasan Arrabitah Al-Alawiyah yang berideologikan Ahlus Sunnah Wal Jamaah ini didirikan pada tahun 1928, sebagai upaya memelihara dan meningkatkan harkat dan martabat umat Islam di Indonesia. Pada tahun 1966, Yayasan Arrabitah Al-Alawiyah Surakarta berganti nama menjadi Yayasan Pendidikan Islam Diponegoro Surakarta sebagai bentuk kecintaan terhadap Tanah Air Indonesia. Perkembangan sekolah pada kurun waktu 1966-2005 tidak mengalami perbedaan yang signifikan. Pada tahun 2005, diadakan Deklarasi YPID yang menghasilkan kesepakatan mengenai visi, misi, strategi, tujuan, nilai-nilai, struktur organisasi dan diskripsi jabatan, dan sistem Manajemen YPID. Yayasan Pendidikan Islam Diponegoro Surakarta ini didirikan oleh masyarakat keturunan Arab golongan Alawi sehingga walaupun sekolah di bawah yayasan ini dibuka untuk umum namun mayoritas peserta didiknya adalah anak-anak keturunan Arab. Kurikulum umum yang diterapkan di Sekolah-sekolah Islam Diponegoro Surakarta mengikuti kurikulum dari pemerintah, sementara kurikulum agama ditentukan oleh yayasan yang disesuikan dengan kurikulum dari Departemen Agama. Proses belajar-mengajar di Sekolah Islam Diponegoro disesuaikan dengan tujuan dan nilai-nilai Yayasan Pendidikan Islam Diponegoro Surakarta. Selain mempunyai peranan dalam bidang pendidikan, Sekolah-sekolah Islam Diponegoro Surakarta juga mempunyai peran sosial terhadap masyarakat Surakarta

Utilization of Cotton Spinning Mill Wastes in Yarn Production

Efficient use of natural resources and utilization of recoverable wastes are getting more and more important day by day since recovering wastes have both economic and environmental benefits. As the source material costs constitute the majority of the yarn production costs, decreasing raw material costs provide considerable advantages for spinners. From the point of textile manufacturing, various production wastes can be reused in textile industry. In each step, from ginning (for cotton fibers) to end product formation, recyclable/recoverable waste materials are generated. However, mainly polyester products are recycled (r-PET) and used again in textile industry by 100% or in blends with other man-made or natural fibers. Compared to research on r-PET, recovered cotton fibers inspired interest recently. The main objective of this study is to fill the gap in the literature via investigating the properties of the yarns produced with recovered cotton wastes, generated in different sources. For this purpose, spinning mill waste types were selected. In this experimental study, different waste types (card waste, blowroom waste, and fabric waste) and blending ratios were used. As a conclusion, the effect of waste type and blend ratio on the physical and mechanical properties of the yarns and the fabrics, produced with virgin and waste cotton fibers, were analyzed

An fpga implementation of decision tree classification

Data mining techniques are a rapidly emerging class of applications that have widespread use in several fields. One important problem in data mining is Classification, which is the task of assigning objects to one of several predefined categories. Among the several solutions developed, Decision Tree Classification (DTC) is a popular method that yields high accuracy while handling large datasets. However, DTC is a computationally intensive algorithm, and as data sizes increase, its running time can stretch to several hours. In this paper, we propose a hardware implementation of Decision Tree Classification. We identify the computeintensive kernel (Gini Score computation) in the algorithm, and develop a highly efficient architecture, which is further optimized by reordering the computations and by using a bitmapped data structure. Our implementation on a Xilinx Virtex-II Pro FPGA platform (with 16 Gini units) provides up to 5.58 × performance improvement over an equivalent software implementation.

The Virtual reality electrical substation field trip: Exploring student perceptions and cognitive learning

COVID19 has disrupted many higher education's learning experiences, including those related to work integrated learning. This included the cancelling of the annual electrical engineering field trip to a local electrical substation. Field trips provides students an opportunity to connect their classroom learning with industry relevant engaging experiences. While virtual reality (VR) alternatives to electrical substations have been implemented and researched, the focus has been on the innovation and not on the educational benefits. The impact on learning is not well documented and understood. To address this gap an experimental study is conducted on fifty electrical engineering students at the University of Wollongong to determine if a VR replica of an electrical substation can provide an equal or better learning and student experience compared to traditional methods. A successful finding would provide confidence to implement such alternatives for situations that include: addressing COVID disruptions; for students that miss the field trip; and for providers that don't have the funds or resources to visit a substation. It was found that the VR substation simulation provided a comparable student experience and stronger cognitive learning benefits than traditional methods. Further research is needed to explore learning impact beyond the cognitive domain

Does Previous Open Nephrolithotomy or Failed Extracorporeal Shock Wave Lithotripsy Therapy Affect Percutaneous Nephrolithotomy Performance and Outcome?

Objective:This study aimed to summarize our experience with patients undergoing percutaneous nephrolithotomy (PNL) with a previous history of extracorporeal shock wave lithotripsy (ESWL) treatment or open nephrolithotomy and compare them with patients who underwent PNL alone.Materials and Methods:A total of 565 patients were treated with PNL from 2012 to 2022 at our center. These patients who underwent PNL were divided into three groups: Group 1 consisted of patients who had no medical history of previous ESWL or open kidney stone surgery, Group 2 consisted of those who had a history of previous ESWL, and Group 3 included patients with a history of previous open kidney stone surgery.Results:Regarding age, there were no notable differences between the three groups, body mass index, gender, laterality, and stone density in Hounsfield Units. Group 3 had a significantly higher total operation fluoroscopy time than the other two groups, and Group 2 had a significantly lower total operation time than the other two groups. Regarding the postoperative parameters of all three groups, including hospital stay, time to nephrostomy removal, urinary leakage, hemoglobin decrease, blood transfusion, and stone-free rates, no statistically significant differences were found.Conclusion:Our study demonstrates that PNL can be safely performed with a similar success rate and without a higher risk of problems in patients who have undergone open nephrolithomy or ESWL, as well as in primary PNL patients who have not undergone any previous interventions

Aplikasi Metode Nonkonvensional Pada Ekstraksi Bawang Dayak

Ekstraksi konvensional pada umumnya membutuhkan waktu yang lama,kurang ramah lingkungan, danberpotensi memicu kerusakan senyawa, sehingga perlu metode alternatifsepertiUltrasound Assisted Extraction (UAE) dan Ultrasound-Microwave Assisted Extraction (UMAE). Tujuan dari penelitian ini adalah untuk mempelajari aplikasi metode UAE dan UMAE pada ekstraksi bawang dayak. Bawang dayak secara tradisional dikenal sebagai salah satu tanaman obat di Kalimantan. Optimasi ekstraksi dengan UAE dilakukan terhadap variabel waktu ekstraksi  dan kuantitas pelarut.Sedangkan pada metode UMAE, optimasi dilakukan terhadap variabel waktu.Hasil penelitian menunjukkan hasil terbaik dengan variable waktu 30 menit dan kuantitas pelarut 240 mL menggunakan UAE.Rendemen ekstraksi dengan metode UAE lebih tinggi daripada UMAE, dimana trend fluktuatif ditunjukkan oleh hasil ekstraksi dengan metode UMA

The diagnostic efficacy of low-dose cervical and thoracic CT in multiple trauma patients

Objective: The aim of this study was to evaluate the initial diagnostic efficacy of low-dose computed tomography (CT) in multi-trauma patients. Methods: 74 patients (44 male, 30 female; average age: 36.9 years) accepted to the emergency unit with the reason of multiple trauma which is included in this study. Cervical and thoracic injury sites were initially evaluated with portable X-Ray and low-dose CT. The Patients’ progress, surgical findings and additional radiologic examination results were recorded until the patients were discharged.Results: The sensitivity and specificity of X-Ray graphies were 50% and 95% for thoracic traumatic pathologies; 0-40% and 95-100% for cervical injuries respectively. CT examination sensitivity and specificity values were 95-100% and 80-100% for thoracic injuries; 95-100% and 96-100% for cervical injuries respectively. Conclusion: Low-dose CT examination is more sensitive than X-Ray graphs for the evaluation of cervicothoracic traumatic injuries. We recommend to prefer low-dose CT as an initial radiologic examination for managing cervicothoracic trauma cases because of its higher diagnostic capability than X-Ray graphy. Key words: Low-dose CT, X-Ray, multiple trauma

Water Stability Characteristic of Nile Tilapia (Oreochromis niloticus) Feed Coated with Tapioca Flour-beeswax-based Edible Coating

One of the reasons in increasing water turbidity in nile tilapia aquaculture is the presence of spoilage in fish feed that is easily disintegrate and decompose as organic matters in the water. Therefore, a thin layer or edible coating is needed to coat the tilapia feed to slow down the decomposition of the feed due to water absorption. The main ingredients for tilapia feed are tapioca flour added with beeswax solution and glycerol as a plasticizer. In this study, the glycerol concentrations used were 3%, 5%, and 7%, and the beeswax concentrations used were 0.25% w/v, 0.50 % w/v, and 0.75 % w/v. The purpose of this study was analysed the effect of plasticizers and beeswax on the characteristics of the edible coating. The method used to coat tilapia feed is the dipping method, where the product is dipped in a coating solution. The results of the research can be demonstrated by performing a and functional group test using FTIR spectra, contact angle test, and water resistance test of coated fish feed