712 research outputs found
Catalysts and Impediments to Tax Increment Finance in Tulsa’s Historical African American Neighborhood
This thesis assesses how Tulsa, Oklahoma grew to utilize tax increment financing (TIF) to produce economic activity in Tulsa’s historic downtown area. Specifically, how the creation, history, and maintenance of ONEOK Field, a $60 million, 6,000-seat sports venue in Tulsa’s historically African American neighborhood became the catalyst for Tulsa’s current TIF policy. In examining the fiscal outcomes of ONEOK Field, this thesis finds implications for inequitable investment in and around Tulsa’s Greenwood TIF distric
A SIMPLE WAY TO MEASURE THE DYNAMIC VISCOSITY OF A FLUID
In this paper, we measured the viscosity of different fluids, including edible oils and soaps, at a constant temperature, using two experimental methods. Namely, the falling ball and the oscillation of the mass-spring system inside a fluid. Three different masses were used to evaluate the viscosity obtained by the falling ball method. The results were very similar. More precision of the viscosity value is done using a calibration curve. The results are compared with those measured by the mass-spring system and they show good agreement. This simple way of viscosity measurement using mechanical physics concepts can be used for educational purposes such as the practical work of a bachelor
RTL fast convolution using the mersenne number transform
VHDL is a versatile high level language for the specification and simulation of hardware components. Here a functional VHDL model is presented for performing fast convolution based on Mersenne's number theoretic transform.
For filtering a rather long input sequence xn() we can decomposed it into a number of short segments, each of which can be processed individually. The output yn()then becomes a combination of partial convolutions. The superposition principle for linear operators is used here.
Each partial convolution can be solved using the Discrete Fourier Transform (DFT) implementing a fast FFT (Fast Fourier Transform) algorithm. This DFT approach is the most popular.
In this paper we use the Mersenne Number Transform (MNT) as an alternative for the DFT in the framework of a register transfer level (RTL) implementation of the filter operation. Even when the MNT does not have a fast algorithm it can be see that RTL in the natural level of abstraction for the implementation of the MNT.
This work is conceived as part of an academic exercise in the use of VHDL for modeling a DSP algorithm all the way from the mathematical specification to the circuit implementation.Eje: Procesamiento distribuido y paralelo. Tratamiento de señalesRed de Universidades con Carreras en Informática (RedUNCI
APSEK PENANGANAN SAMPAH DALAM PENERAPAN PRINSIP GREEN BUILDING (STUDI KASUS PADA BANGUNAN RUKO DI KUPANG)
Bangunan Rumah Toko atau sering disingkat Ruko, tumbuh pesat di perkotaan sebagai imbas dari meningkatnya perekonomian suatu wilayah. Bahkan tidak hanya di kota, telah pula merambah hingga pedesaan, mengubah fungsi lahan pertanian menjadi bangunan Ruko. Hal ini jika tidak ditangani secara baik akan menimbulkan dampak yang negative jika dilakukan dalam skala besar dan bersifat massif. Untuk itu penelitian ini menggambarkan bagaimana pembangunan gedung merespon adanya prinsip green building yang tertuang dalam green building council khusus dalam hal penanganan sampah/limbah konstruksi. Hasil penelitian menunjukkan bahwa hanya 21 % dari prinsip green building council dalam hal penanganan sampah yang diterapkan oleh pemilik maupun pelaksana pembangunan Rumah Toko. Sedangkan dai kriteria Prinsip Green Building Council dari aspek penanganan sampah, menurut responden memiliki tingkat kepentingan yang kuat sampai sangat kuat terhadap kriteria yang ada
Band gap engineering in simultaneous phononic and photonic crystal slabs
We discuss the simultaneous existence of phononic and photonic band gaps in two types of phononic crystals
slabs, namely periodic arrays of nanoholes in a Si membrane
and of Si nanodots on a SiO2 membrane. In the former
geometry, we investigate in detail both the boron nitride
lattice and the square lattice with two atoms per unit cell
(these include the square, triangular and honeycomb lattices
as particular cases). In the latter geometry, some preliminary
results are reported for a square lattice
Pengaruh Lama Penyimpanan Semen Segar pada Media Simpan Coldbox terhadap Motilitas, Viabilitas Spermatozoa dan pH Semen Ayam Buras
The purpose of this study was to determine the effect of storage time for fresh semen on media ColdBox on the motility, viability of spermatozoa and semen pH of native chickens. This research was conducted in October 2020 at the Laboratory of the Faculty of Agriculture, University of Timor Kefamenanu, North Central Timor Regency (TTU). Chicken semen used in this study came from 10 male native chickens with an age range of 2-3 years or with a spur length of 2-3 cm. This is the basis for selecting male livestock to produce quality cement which will be used as research material. This research used an experimental laboratory with a completely randomized design (CRD), which consists of 4 treatments and three replications so that there are 12 experimental units, namely: R1:Storage fresh cement over time (0 hours), R2:Storage fresh cement during the period ( 2 hours), R3: Storage of fresh cement for time (4 hours), R4: Storage of fresh cement for time (6 hours). The variables used in this study were: spermatozoa motility, spermatozoa viability, semen pH. The data obtained were analyzed using the Duncan Test of Variety Analysis. By using statistical software packages for the social sciences (SPSS. 20). The results showed that the mean spermatozoa motility in treatments R1, R2, R3 and R4, respectively, were mass motility of 4 ± 0, 4 ± 0, 4 ± 0 and 3 ± 0.6. Individual motility is 80 ± 00, 80 ± 00, 80 ± 00, and 80 ± 00. Viability 96 ± 02, 94 ± 04, 95 ± 73, and 91 ± 75. Semen pH 8 ± 05, 8 ± 00, 8 ± 05 and 8 ± 00. Statistical analysis showed that the treatment had a significant effect on the viability of native chicken spermatozoa. It was concluded that domestic chicken spermatozoa could survive for 6 hours in a storage media ColdBox containing ice cubes.Tujuan dari penelitian ini adalah untuk mengetahui pengaruh lama penyimpanan semen segar pada media coldbox terhadap motilitas, viabilitas spermatozoa dan pH semen ayam buras. Penelitian ini dilaksanakan pada Bulan Oktober 2020 di Laboratorium Fakultas Pertanian Universitas Timor Kefamenanu Kabupaten Timor Tengah Utara (TTU). Semen ayam yang digunakan dalam penelitian ini berasal dari 10 ekor ayam buras jantan dengan kisaran umur 2-3 tahun atau dengan panjang taji 2-3 cm. Hal ini sebagai dasar seleksi ternak jantan untuk menghasilkan semen yang berkualitas yang akan dijadikan sebagai bahan penelitian. Penelitian ini menggunakan metode experimen laboratorium dengan rancangan acak lengkap (RAL) yang terdiri dari 4 perlakuan dan 3 ulangan sehingga terdapat 12 unit percobaan yaitu: R1: Penyimpanan semen segar selama waktu (0 jam), R2: Penyimpanan semen segar selama waktu (2 jam), R3: Penyimpanan semen segar selama waktu (4 jam), R4: Penyimpanan semen segar selama waktu (6 jam). Variabel yang digunakan dalam penelitian ini adalah: Motilitas spermatozoa, Viabilitas spermatozoa, pH semen. Data yang diperoleh dianalisis menggunakan Analisis Sidik Ragam uji Duncan. Dengan menggunakan software statistical packge for the social ssciences (SPSS. 20). Hasil penelitian menunjukkan bahwa rata-rata motilitas spermatozoa pada perlakuan R1, R2, R3 dan R4, masing-masing adalah motilitas massa 4±0, 4±0, 4±0 dan 3±0,6. Motilitas individu 80±00, 80±00, 80±00, dan 80±00. Viabilitas 96±02, 94±04, 95±73, dan 91±75. pH semen 8±05, 8±00, 8±05 dan 8±00. Analisis statistik menunjukan bahwa perlakuan berpengaruh nyata pada viabilitas spermatozoa ayam buras. Disimpulkan bahwa spermatozoa ayam buras dapat bertahan hidup selama 6 jam di dalam media simpan coldbox yang berisi es batu
Interleaving Scheduling Algorithm for SLM Transactions in Mode S Surveillance Radar
Mode S Secondary Surveillance Radar establishes selective and univocally addressed transactions with aircraft within its coverage while using efficiently the available budgets of time and energy. This benefits are key to supporting high-traffic density. A preliminary interleaving algorithm for the scheduling of Short Length Message transactions is presented and tested under a heavy load simulated scenario.IX Workshop Procesamiento de Señales y Sistemas de Tiempo Real (WPSTR)Red de Universidades con Carreras en Informática (RedUNCI
A fast CORDIC co-processor architecture for digital signal processing applications
The coordinate rotational digital computer (CORDIC) is an arithmetic algorithm, which has been used for arithmetic units in the fast computing of elementary functions and for special purpose hardware in programmable logic devices. This paper describes a classification method that can be used for the possible applications of the algorithm and the architecture that is required for fast hardware computing of the algorithm.Área: Redes - Sistemas Operativos - Sistemas de Tiempo Real - Arquitectura de ProcesadoresRed de Universidades con Carreras en Informática (RedUNCI
Interleaving Scheduling Algorithm for SLM Transactions in Mode S Surveillance Radar
Mode S Secondary Surveillance Radar establishes selective and univocally addressed transactions with aircraft within its coverage while using efficiently the available budgets of time and energy. This benefits are key to supporting high-traffic density. A preliminary interleaving algorithm for the scheduling of Short Length Message transactions is presented and tested under a heavy load simulated scenario.IX Workshop Procesamiento de Señales y Sistemas de Tiempo Real (WPSTR)Red de Universidades con Carreras en Informática (RedUNCI
First-line erlotinib and fixed dose-rate gemcitabine for advanced pancreatic cancer
AIM: To investigate activity, toxicity, and prognostic factors for survival of erlotinib and fixed dose-rate gemcitabine (FDR-Gem) in advanced pancreatic cancer. METHODS: We designed a single-arm prospective, multicentre, open-label phase II study to evaluate the combination of erlotinib (100 mg/d, orally) and weekly FDR-Gem (1000 mg/m2, infused at 10 mg/m2per minute) in a population of previously untreated patients with locally advanced, inoperable, or metastatic pancreatic cancer. Primary endpoint was the rate of progression-free survival at 6 mo (PFS-6); secondary endpoints were overall response rate (ORR), response duration, tolerability, overall survival (OS), and clinical benefit. Treatment was not considered to be of further interest if the PFS-6 was < 20% (p0 = 20%), while a PFS-6 > 40% would be of considerable interest (p1 = 40%); with a 5% rejection error (α = 5%) and a power of 80%, 35 fully evaluable patients with metastatic disease were required to be enrolled in order to complete the study. Analysis of prognostic factors for survival was also carried out. RESULTS: From May 2007 to September 2009, 46 patients were enrolled (male/female: 25/21; median age: 64 years; median baseline carbohydrate antigen 19-9 (CA 19-9): 897 U/mL; locally advanced/metastatic disease: 5/41). PFS-6 and median PFS were 30.4% and 14 wk (95%CI: 10-19), respectively; 1-year and median OS were 20.2% and 26 wk (95%CI: 8-43). Five patients achieved an objective response (ORR: 10.9%, 95%CI: 1.9-19.9); disease control rate was 56.5% (95%CI: 42.2-70.8); clinical benefit rate was 43.5% (95%CI: 29.1-57.8). CA 19-9 serum levels were decreased by > 25% as compared to baseline in 14/23 evaluable patients (63.6%). Treatment was well-tolerated, with skin rash being the most powerful predictor of both longer PFS (P < 0.0001) and OS (P = 0.01) at multivariate analysis (median OS for patients with or without rash: 42 wk vs 15 wk, respectively, Log-rank P = 0.03). Additional predictors of better outcome were: CA 19-9 reduction, female sex (for PFS), and good performance status (for OS). CONCLUSION: Primary study endpoint was not met. However, skin rash strongly predicted erlotinib efficacy, suggesting that a pharmacodynamic-based strategy for patient selection deserves further investigation
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