Drive control and real-time simulation for switched reluctance motor in a fuel cell power system.

Switched Reluctance Motor (SRM) drive is considered as a possible alternative to other conventional variable-speed drives because of several advantages [1], [2]. However, in order for the performance of a switched reluctance motor drive to suit several applications, it has to be tailored through appropriate control. Rotor position sensing is an integral part of SRM control because of the nature of torque production. Sensorless control reduces overall cost and dimension of the drive in addition to improving reliability. In this thesis, an Inductance Model Based Sensorless [8] Switched Reluctance Motor is used to design the drive controller for SRM. A hysteresis current controller and a speed controller were implemented to produce smooth torque and a stable speed for SRM. In addition, the do power supply for the SRM was derived from Fuel Cell Stack rather than from batteries or from utility lines through a front-end diode rectifier. In this research, first, the current controller and the speed controller are developed and connected to the Inductance Based Sensorless SRM model with the Fuel Cell Stack model and an offline simulation using Matlab/Simulink is obtained. A detailed computer model of the SRM control drive connected to the Fuel Cell stack model is developed in which the design of the proposed controller scheme is verified. As a next major step, a Real-Time simulation was obtained for the model using Opal-RT platform, and a comparison between the offline simulation results and real time simulation results is developed. As a final step, the characteristics of the SRM Inductance model, Controller model, and the Fuel Cell stack model are studied in detail, which is required in order to use them in future applications.Dept. of Electrical and Computer Engineering. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis2004 .S246. Source: Masters Abstracts International, Volume: 43-05, page: 1783. Adviser: X. Chen. Thesis (M.A.Sc.)--University of Windsor (Canada), 2004

Discerning Consistent Evidence-Based Communication Strategies for Supporting Deaf Writers in the First Year Composition Classroom: A Study

Indiana University-Purdue University Indianapolis (IUPUI)The presented study contributes to growing and necessary research compilations that include the field of Deaf Education and First Year Composition. The central goal of this study is to better understand what d/Deaf students, American Sign Language interpreters, and writing instructors currently experience when working together in a mainstream writing classroom to conduct clear communication among all participants. To address the support of d/Deaf students in such environments, a review of current literature that intersects the fields of Deaf Education, Disability Studies, and Writing and Rhetoric was conducted. Then, an IRB approved general interview study was conducted with culturally Deaf students, mainstream writing educators, and a nationally certified interpreter of the Deaf. Although this research touches just the very edges of an entire situation of inquiry and discourse, it offers a starting point from which educators and researchers alike can continue to develop further analysis of communication techniques to support d/Deaf writers in the writing classroom at the college level

Control and Power Supply for Resistance Spot Welding (RSW)

In the automobile industry, Resistance Spot Welding (RSW) is widely used for its low cost, high speed, simple mechanism and applicability for automation. RSW has become the predominant means of auto body assembly, resulting in two to six thousands spot welds performed on each manufactured car. In the North American automobile industry there are approximately 100 billion spot welds, which are done every year. RSW is the joining of two or more metal parts together in a localized area by resistive heating and pressure. Small Scale RSW (SSRSW) is commonly used for medical devices and electronic components, because the welded parts are thinner and smaller compared to common RSW applications, such as automotive applications. According to a study of Edison Welding Institute, 20% of the welding quality issues are the weld schedule or power supply related. Therefore, to contribute to weld quality improvement, the study of different weld schedules or power supplies and control schemes needs to be improved by doing further studies in this area. Thus a novel power supply, which can provide a testing bench for these studies, was designed and developed in 2005 by L. J. Brown and J. Lin. This research study will focus on studying and improving weld power supplies, weld schedules and control modes. One of the goals for this research is to improve the consistency of weld nugget size and strength by using different control parameters, which will be weighted geometric averages of voltage and current. These control parameters are fed back to a Proportional Integral Derivative (PID) controller that is designed to control the Direct Current (DC) power supply for the RSW to come up with the best control parameters that will improve the consistency of the RSW spot welds. Another goal for this research is it to further develop the existing DC power supply that was designed for SSRSW by L. J. Brown, to include tip voltage measurements, and Large Scale Resistance Spot Welding (LSRSW). This goal will lead to build additional weld modules to construct a 6000A welder in the future

HUBUNGAN KARAKTERISTIK IBU DENGAN PERDARAHAN POST PARTUM DI RUMAH SAKIT UMUM DAERAH dr. ZAINOEL ABIDIN DAN RUMAH SAKITIBU DAN ANAK BANDA ACEH TAHUN 2012

KEMENTRIAN PENDIDIKAN DAN KEBUDAYAANUNIVERSITAS SYIAH KUALAFAKULTAS KEDOKTERANPROGRAM STUDI ILMU KEPERAWATANSKRIPSI01 Oktober 2012xiv halaman + VI Bab + 74 halaman + 9 tabel + 1 skema +15 lampiranNURLINA MERANDA1007101190015HUBUNGAN KARAKTERISTIK IBU DENGAN PERDARAHAN POST PARTUM DI RUMAH SAKIT UMUM DAERAH dr. ZAINOEL ABIDIN DAN RUMAH SAKIT IBU DAN ANAK BANDA ACEH TAHUN 2012ABSTRAKBerdasarkan profil Dinas Kesehatan Provinsi Nanggroe Aceh Darussalam penyebab kematian ibu di Aceh pada tahun 2011 adalah perdarahan 35%, hipertensi dalam kehamilan 21%, infeksi 4%, abortus 0%, partus lama 1% dan lain-lain 39%. Tujuan penelitian dilakukan untuk mengetahui Hubungan Karakteristik Ibu Dengan Perdarahan Post Partum Di RSUD dr. Zainoel Abidin dan Rumah Sakit Ibu dan anak Banda Aceh Tahun 2012. Desain penelitian bersifat deskriptif korelatif dan menggunakan teknik pengambilan sampel accidental sampling, dengan populasi adalah ibu yang mengalami perdarahan post partum dan sampel adalah 30 orang. Waktu penelitian 09 Juli -19 September 2012, alat pengumpulan data yang digunakan yaitu tabel isian dengan teknik wawancara terpimpin. Berdasarkan hasil analisis bivariat dengan Chi-Square dengan tingkat signifikan 5% (0,05) menunjukkan bahwa tidak ada hubungan umur (p=1,000), paritas (p=1,000), riwayat persalinan (p=1,000), dan Antenatal care (p=0,467) dengan perdarahan post partum. Setelah dilakukan penelitian tidak ada hubungan yang signifikan antara karakteristik ibu dengan perdarahan post partum. Diharapkan kepada ibu-ibu untuk melakukan Antenatal care minimal 4 kali dan mencari informasi penyulit kehamilan/persalinan.Kata Kunci: Perdarahan Post Partum, Karateristik Ibu. Daftar Bacaan: 21 Buku Bacaan, 13 Artikel Internet (1998- 2011)

Factors that Impact Successful Student Achievement in Post-Secondary Online Courses

The purpose of this study was to determine if there was a significant differences in students based of education demographics and what factors contributed to the successful completion of online courses for postsecondary education students. Specifically, this study sought to determine if there was a significant difference between certain educational demographics (gender, race, classification, course, and professor) and grade; a significant relationship between specific online course features (availability of chat, videos, discussion boards, and video conferences) and grade; a significant relationship between certain student behaviors (location of access, time to complete assignments, interaction with content, frequency of access, interaction with instructor, and interaction with students) and grade; and students’ perception and grades. A Kruskal-Wallis analysis was conducted to analyze differences within and between groups by educational demographics. Spearman Rho’s Correlations were computed to examine if a significant relationship existed between the aforementioned independent variables and the dependent variable of students’ grades. After the data were collected and analyzed, the findings showed that there were no statistically significant differences among students who completed online courses. There was no statistically significant relationships between the independent variables and students’ grades

Do Support Groups Mitigate the Effects of Imposter Syndrome?

Imposter syndrome is defined as the persistent inability to believe that one\u27s success is deserved or has been legitimately achieved as a result of one\u27s own efforts or skills. Small support groups utilized in an academic environment could prove to be effective in mitigating the effects of imposter syndrome. A total of 4 articles were individually reviewed and included for meta-analysis. Each study was conducted on students studying medicine and utilized support groups at the core of their intervention for combating imposter syndrome and improving overall psychological wellness. Results were based on surveys and yielded an overall positive response from participants. While these results were subjective in nature, the diagnosis of imposter syndrome is subjective as well, leading to the conclusion that support groups do have an impact on the effects of imposter syndrome. However, further studies should be conducted in order to reach more definitive conclusions on the details necessary for optimal support group implementation

ANALISIS DETEKSI SUARA PARU¬-PARU BERBASIS DSP TMS320C6416T DAN MODULE WIRELESS

Paru-parumerupakan organ tubuh pada manusiadalammenjalankansistemrespirasi (pernapasan), dan berfungsisebagaibertukarnyaoksigen dan karbondioksida. Untukmendeteksisuaraparu-parudiperlukanstetoskopsebagaialatuntukmendengarkansuara pada paru-paru. Teknik inidisebutsebagaiauskultasi, dimana pada teknikinibanyakbatasan dan kekurangan. Untukmengatasipermasalahantersebutmaka pada penelitianinidiusulkansebuahteknikauskultasi yang dimodifikasidengan electret condenser microphone untukmenangkapsuara pada paru-paru. Tipe yang digunakan electret condenser microphone yaitu unidirectional (cardioid). Sinyallistrik yang dihasilkan oleh electret condenser microphone dikuatkanlagimenggunakan pre-amplifier karnasinyallistrik yang dihasilkan electrets condenser microphone sangatkecil. Pre-amplifier yang digunakanyaitu tube ultragain mic100. Sinyal yang dikuatkandengan pre-amplifier masihberbentuksinyallistrik, sinyallistrikiniakandiproses di DSP untukmengubahsinyalmenjadi data diskrituntukmengubahsinyalsuarakesinyallistrik analog. Sinyal analog akandiubahmelalui unit ADC agar dapatberubahmenjadisinyal digital kemudian DSP akanmenerimasinyal digital dan memproses data digital tersebut yang kemudiansinyaldisimpandalambentuk file .wav. File .wav yang disimpankemudiandipindahkanke android melaluiRobotDyn UNO+WIFI sebagai media komunikasi. RobotDyn UNO+WIFI yang digunakanyaitutipe ATmega328p+ESP8266 CH340G, file .Wav diproses dan diputaruntukdapatdivisualisasikan pada android sehinggamempermudahdokterdalammenganalisasuaraparu-parupasien

EFEKTIVITAS APLIKASI RAPORT SD DALAM PENILAIAN KURIKULUM 2013:Studi Deskriptif Terhadap Persepsi Guru SD di Gugus 3 Kecamatan Sungaiselan, Kabupaten Bangka Tengah, Provinsi Kepulauan Bangka Belitung

Tujuan dari penelitian ini adalah untuk mengetahui efektivitas aplikasi raport SD dalam penilaian Kurikulum 2013 di gugus 3 Kecamatan Sungaiselan, Kabupaten Bangka Tengah, Provinsi Kepulauan Bangka Belitung. Penilaian kurikulum 2013 terdiri dari penilaian sikap, penilaian pengetahuan dan penilaian keterampilan. Penelitian ini dilatarbelakangi dari kegelisahan para guru dimana dalam proses penilaian pada kurikulum 2013 terbilang cukup rumit dan kompleks dibandingkan kurikulum sebelumnya, sehingga muncullah aplikasi penilaian untuk rapor kurikulum 2013. Penelitian ini menggunakan metode deskriptif dengan pendekatan kuantitatif. Sebagaimana dikatakan (Nazir: 2003) metode deskriptif adalah suatu metode yang meneliti status sekelompok manusia, suatu objek, suatu set kondisi, suatu sistem pemikiran, ataupun suatu kelas peristiwa pada masa sekarang. Pengumpulan data dilakukan melalui angket. Hasil penelitian menujukkan bahwa, penggunaan aplikasi raport SD dalam penilaian Kurikulum 2013 dinyatakan masuk dalam ketegori baik dengan tingkat efektivitas sebesar 78,42%. Dengan hasil lebih rinci, efektivitas aplikasi raport SD dalam penilaian sikap 77,15% (kategori baik), penilaian pengetahuan 80,57% (kategori sangat baik), dan penilaian keterampilan 77,01% (kategori baik).----------The purpose of this study was to determine the effectiveness of application report books SD in the assessment of Curriculum 2013 in group 3 sub-district of Sungaiselan, district of Bangka Tengah, Bangka Belitung province. The Assessment of curriculum 2013 consist of attitude assessment, knowledge assessment and skills assessment. The research was motivated from the anxiety of the teacher where in the assessment process on the curriculum 2013 is quite complicated and complex than the previous curriculum, and so comes the application of curriculum 2013 assessment for the report book. This research uses descriptive method with quantitative approach. As it is said (Nazir: 2003), descriptive method is a method that examines the status of a group human, an object, a set of conditions, a system of thought, or a class of events in the present. Data collected through questionnaires. The results show that the use of application report books SD in the assessment of curriculum 2013 show good category with the level of effectiveness 78.42%. With more detailed results, the effectiveness of application report books SD in attitude assessment is 77.15% (both categories), assessment of knowledge 80.57% (excellent category), and skills assessment 77.01% (both categories)