1,717 research outputs found

    Development of a user-adaptable human fall detection based on fall risk levels using depth sensor

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    Unintentional falls are a major public health concern for many communities, especially with aging populations. There are various approaches used to classify human activities for fall detection. Related studies have employed wearable, non-invasive sensors, video cameras and depth sensor-based approaches to develop such monitoring systems. The proposed approach in this study uses a depth sensor and employs a unique procedure which identifies the fall risk levels to adapt the algorithm for different people with their physical strength to withstand falls. The inclusion of the fall risk level identification, further enhanced and improved the accuracy of the fall detection. The experimental results showed promising performance in adapting the algorithm for people with different fall risk levels for fall detection

    Support Vector Regression Based S-transform for Prediction of Single and Multiple Power Quality Disturbances

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    This paper presents a novel approach using Support Vector Regression (SVR) based S-transform to predict the classes of single and multiple power quality disturbances in a three-phase industrial power system. Most of the power quality disturbances recorded in an industrial power system are non-stationary and comprise of multiple power quality disturbances that coexist together for only a short duration in time due to the contribution of the network impedances and types of customers’ connected loads. The ability to detect and predict all the types of power quality disturbances encrypted in a voltage signal is vital in the analyses on the causes of the power quality disturbances and in the identification of incipient fault in the networks. In this paper, the performances of two types of SVR based S-transform, the non-linear radial basis function (RBF) SVR based S-transform and the multilayer perceptron (MLP) SVR based S-transform, were compared for their abilities in making prediction for the classes of single and multiple power quality disturbances. The results for the analyses of 651 numbers of single and multiple voltage disturbances gave prediction accuracies of 86.1% (MLP SVR) and 93.9% (RBF SVR) respectively. Keywords: Power Quality, Power Quality Prediction, S-transform, SVM, SV

    On the accuracy of the numerical integrals of the newmark’s method for computing inelastic seismic response

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    The paper proposes an algorithm of the numerical integration with the modal analysis for computing inelastic seismic responses, and furthermore, the accuracy of the numerical integration with the Newmark’s =1/4 method that is most popular in the earthquake engineering is discussed by comparing with the response computed by the proposed method

    Analisis Unjuk Kerja Jaringan 3g (Umts) Menggunakan Metode Drive Test “Voice Mode”

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    Teknologi 3G UMTS (3rd Generation Universal Mobile Telecomunication System) atau yang lebih dikenal dengan WCDMA (Wideband Code-Division Multiple Access), perkembangan teknologi WCDMA diharapkan mampu mengakomodasi berbagai macam layanan paket data berkecepatan tinggi pada jaringan dan alokasi frekuensi yang telah ada. Untuk itu pada penerapan jaringan WCDMA diperlukan perancangan yang sangat matang dan optimasi jaringan sehingga dapat menghasilkan jaringan yang optimal dan menguntungkan. Pada tugas akhir ini dilakukan pengukuran unjuk kerja jaringan 3G UMTS berdasarkan KPI (Key Performance Indicators). Proses pengerjaan difokuskan pada area yang rute clusternya sudah ditentukan di daerah Kota Pontianak. Untuk mengetahui masalah yang ada, diperlukan data cluster berupa Packet Data Statistic dan Audio/Video Call statistic. Kedua data tersebut merupakan parameter tingkat ketahanan hubungan yang terjadi antara layanan data dan layanan suara/gambar. Diperlukan drive test untuk mengetahui nilai RSCP dan Ec/No. Penulis menggunakan data-data yang diperoleh dari hasil lapangan dan dibantu oleh engginer drive test dari Vendor Drive Test Kubik Pontianak. Voice Mode adalah metode dimana handphone yang digunakan melakukan aktifitas menelpon berupa panggilan suara (audio) dan gambar (video call) ke pengguna yang lain, dari hasil analisis didapatkan unjuk kerja jaringan 3G yang diteliti berdasarkan parameter KPI yaitu RSCP, Ec/No yang diperoleh menggunakan software Nemo Analyze, sedangkan CSSR, DCR, CCR dan HOSR diperoleh dengan menggunakan rumus untuk keseluruhan cluster yang yang sudah ditentukan sebelumnya. RSCP sebesar 85,67% dalam kondisi sangat baik, nilai Ec/No sebesar 80,61% dalam kondisi sangat baik, CSSR sebesar 100,00% dalam kondisi sangat baik , DCR sebesar 12,00% dalam kondisi buruk, CCR 6,00% dalam kondisi kurang baik, HOSR sebesar 100% dalam kondisi sangat baik. Khusus item CCR dan DCR menunjukkan kondisi tidak sama dengan standarisasi dari KPI diperlukan Sharing Traffic yang menjalankan prosedur handover atau dengan penambahan Traffic Channel untuk CCR dan untuk DCR diperlukan beberapa metode salah satunya dengan metode Full Rate yaitu menggunakan semua CI untuk mencapai kualitas panggilan yang sangat baik atau bisa juga dengan cara Perubahan parameter handover untuk mempercepat handover agar tidak terjadi drop call

    Moderating effect of growth need strength on self-esteem and job satisfaction link

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    The psychological well-being for State Registered Nurses [SRN] is resolute to a large extent by that person’s satisfaction with the individual experience of job satisfaction. Therefore, the purpose of this study is to determine the moderating effect of Growth Need Strength [GNS] on self-esteem and job satisfaction link among State Registered Nurses [SRN]. Data were gathered through survey using questionnaire. This study employed stratified random sampling involving a total of 390 nurses at selected general hospitals. The finding of the study contributes in the specific area of literature, theory and also in research design.The results of this study consist of linear and hierarchical regression analysis suggest that the GNS as moderator have played significant important role for the relationship between self-esteem and job satisfaction. It is also provide a much better conducive working environment and by incorporating policies that can improve job satisfactio

    Column extraction and separation of some metal ions by diethylenetriamine polysiloxane immobilized ligand system

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    An extraction chromatographic solid porous polysiloxane functionalized by chelating diethylenetriamine ligand of the general formula P-(CH2)3-NH(CH2)2NH(CH2)2NH2, (Where P represents [Si-O]n siloxane network) has been evaluated for the separation of Co(II), Ni(II) and Cu(II) from aqueous solutions. The chromatographic parameters of the separation method have been optimized. The ligand system retained Co(II), Cu(II) and Zn(II) effectively when used as a metal ion extractant by controlling the pH value. The ligand system also shows a good separation of a mixture of metal ions Co(II), Ni(II) and Cu(II) when used as chromatographic stationary phase. The optimum separation pH values were 4.5, 4 for Co(II) and Ni(II) respectively, while a solution of 0.1 M HNO3 was used to elute Cu(II). Metal ions were also preconcentrated at pH 5.5. The chemisorbed metal ions were regenerated from the solid extractant using 0.5 M HCl

    METODE PELAKSANAAN PEKERJAAN JALAN (STUDI KASUS : JALAN PAMBANG – TELUK LANCAR STA 1+600 – STA 3+100)

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    Jalan merupakan prasarana utama yang sangat berpengaruh dalam bidang perekonomian di suatu daerah. Ruas jalan Pambang – Teluk Lancar, Kecamatan Bantan, Provinsi Riau, merupakan jalan penghubung utama ke beberapa desa diujung pulau Bengkalis.Kondisi jalan saat ini dalam keadaan rusak dan kurang memadai untuk lalu lintas masyarakat. Oleh karena itu pemerintah daerah melalui dinas Pekerjaan Umum telah melakukan perencanaan jalan pada lokasi tersebut, yang rencananya akan di lanjutkan dengan pelaksanaan pekerjaan konstruksi pada tahun 2020.Dalam perancangan metode ini didapat tata cara pelaksanaan pekerjaan secara umum dari awal hingga akhir pekerjaan berdasarkan spesifikasi yang telah disyaratkan. Kemudian lokasi quarry yang digunakan adalah quarry yang sudah ada permanen di dekat lokasi pekerjaan dengan jarak ± 5 km dari lokasi pekerjaan. Untuk penempatan barak pekerja dan kantor lapangan juga memakai yang sudah ada atau permanen di sekitaran lokasi quarry

    Preparation of Immobilized-Polysiloxane Salicylaldehyde Propylimine and Its Application

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    A porous solid polysiloxane ligand system of the general formula P-(CH2) 3-C7H6NO,(where P represents [Si-O] n siloxane network) has been prepared by modification of the immobilized 3-aminopropylpolysiloxane, P-(CH2) 3NH2 with an exsess of salicylaldehyde. The new modified polysiloxane system exhibits good potential for uptake of Co 2+ and Cu 2+ metal ions. This ligand system gives more stable complexes with the divalent metal ions than its parent 3-aminopropylpolysiloxane precursor. Characterization was achieved using elemental analysis and FTIR spectroscopy

    Anticoagulation with Warfarin: Roles of Adherence, Social Support and Illness Perception

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    Objectives: This study was aimed to determine (1) the associations between adherence to warfarin, social support, perception of illness, and demographic factors on the quality of international normalized ratios (INRs); as well as (2) the relationship between the patients’ scores in the Malaysian medication adherence scale (MALMAS) and their current INRs. Method: This cross-sectional survey was conducted from November 2017 to January 2018 at the warfarin clinic of Jerantut Hospital, Malaysia. Results: Some 58 participants were recruited, of whom 70.7% were diagnosed with atrial fibrillation (AF). Overall, 87.9% of the participants claimed adherence to their warfarin regimens. Patients with good-quality INR therapy were significantly older, had a higher median income and longer appointment durations. In terms of illness perception (IP), participants with good-quality INR therapy had significantly lower scores in the identity, personal control, and consequence domains. Overall, the total scores for IP were significantly lower in the good-quality INR therapy. Meanwhile, the MALMAS scores were significantly lower in patients with sub-therapeutic current INR. However, there were no associations between warfarin adherence and perceived social support with current TTR. Conclusion: Monitoring of demographic factors and IP’s domains is vital since they were associated with quality of INR therapy. Meanwhile, the occurrence of sub-therapeutic current INR should raise suspicion of poor adherence in these patients. Overall, IP and MALMAS are useful tools that should be integrated into the patient care protocols.   Article Type: Original Researc

    Strategi United Sabah Islamic Association (Usia) Dalam Mengembangkan Dakwah Di Kota Kinabalu Malaysia

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    Dalam realitas kehidupannya, masyarakat Islam selalu dihadapkan denganberbagai persoalan baik internal maupun eksternal. Untuk itu diperlukan aktivitas dakwah sebagai media penguatan pemahaman umat. Tujuan aktivitas dakwah adalah menyampaikan risalah Islam agar panji-panji kebenaran terus mewarnai kehidupan masyarakat di Kota Kinabalu Malaysia. Untuk tegaknya dakwah maka diperlukan strategi tertentu sehingga memudahkan pelaksanaan dakwah itu sendiri. Sebagai salah satu organisasi dakwah terkemuka di Sabah, USIA telah mempraktikkan beberapa strategi untuk mengembangkan dakwah yang terangkum dalam grand strategy dengan cara membentuk jaringan dakwah. Strategi ini erat hubungannya dengan teori jaringan yang dikembangkan oleh Wellman. Kajian ini lebih bersifat induktif kualitatif dengan mengutamakan data hasil wawancara, studi dokumentasi, dan observasi terbatas yang dilakukan selama proses pengumpulan data berlangsung
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