1,129 research outputs found
Representation of non-markovian optimal stopping problems by constrained BSDEs with a single jump
No full textWe consider a non-Markovian optimal stopping problem on finite horizon. We prove that the value process can be represented by means of a backward stochastic differential equation (BSDE), defined on an enlarged probability space, containing a stochastic integral having a one-jump point process as integrator and an (unknown) process with a sign constraint as integrand. This provides an alternative representation with respect to the classical one given by a reflected BSDE. The connection between the two BSDEs is also clarified. Finally, we prove that the value of the optimal stopping problem is the same as the value of an auxiliary optimization problem where the intensity of the point process is controlled
Exploiting Plasmonic Phenomena in Polymer Optical Fibers to Realize a Force Sensor
No full textIn this work, a novel sensing approach to realize a force optical fiber sensor is designed, developed, and experimentally tested. The proposed sensing methodology exploits the effects of deformation due to an applied force on a patch of plastic optical fiber (POF) connected at the input of a surface plasmon resonance (SPR) sensor realized in a D-shaped POF. Therefore, the proposed force sensor system consists of an SPR D-shaped POF sensor, connected to a spectrometer, within input of a POF patch, connected to a light source used for interacting with the applied force. When the applied force on the patch changes, the mode profile of the light in the multimode POF patch and the SPR-POF sensor change too, so the SPR spectra shift. The obtained experimental results demonstrate that the proposed sensor has a resolution of the force sensor equal to about 22 mN and an excellent linear response in the range from 0 N to 0.5 N
ANALISIS ASPEK KEMASYARAKATAN MELALUI PEMIKIRAN A. SAMAD SAID DALAM NOVEL DAERAH ZENI DAN HUJAN PAGI
No full textAbstrak
Kajian ini dijalankan untuk menganalisis aspek kemasyarakatan melalui pemikiran oleh A. Samad Said dalam novel popular beliau yang bertajuk Daerah Zeni dan Hujan Pagi. Hal ini kerana aspek kemasyarakatan yang dibincangkan dalam novel oleh A. Samad Said dapat menggambarkan kekuatan pemikiran pengarang melalui kreativiti beliau yang dapat memberi sumber maklumat terkini kepada khalayak atau pembaca. Oleh itu, kajian ini juga dijalankan bertujuan mengenal pasti dan menganalisis aspek kemasyarakatan melalui pemikiran A. Samad Said dalam novel Daerah Zeni (1985) dan Hujan Pagi (1992). Di samping itu, reka bentuk kajian ini bersifat kualitatif melalui kaedah kepustakaan dan analisis kandungan teks. Selain itu, teori sosiologi dijadikan sebagai deduktif untuk memantapkan analisis perbincangan. Sebagai kesimpulannya, hasil dapatan kajian ini membuktikan bahawa A. Samad Said bijak mengutarakan cetusan idea dan kreativiti dalam usaha membincangkan isu semasa yang dapat diterima secara terbuka oleh masyarakat di dalam novel popular beliau.
Abstract
This study was conducted to analyze the aspects of society through the thinking by A. Samad Said in his popular novel titled Daerah Zeni and Hujan Pagi. This is because the societal aspects discussed in the novel by A. Samad Said can illustrate the strength of the author\u27s thinking through his creativity which can provide the latest sources of information to the audience or readers. Therefore, this study was also conducted by aiming at identifying and analyzing the aspects of society through the thinking by A. Samad Said in the novels Daerah Zeni (1985) and Hujan Pagi (1992). This study is qualitative in nature by using the library methods and text content analysis. In addition, sociological theory is used deductively to strengthen the analysis of the discussion. This study has proven that A. Samad Said has wisely expressed the spark of ideas and creativity in an effort to discuss current issues that can be openly accepted by the community in his popular novel.
 
A novel intensity-based sensor platform for refractive index sensing
No full textIn the present investigation a new intensity-based sensor platform for refractive index sensing is presented. It is based on a special holder, a slab waveguide and two Plastic optical fibers (POFs). In particular, we present a comparison between two different configurations: the slab waveguide with and without a buffer layer. Advantages of this new approach are the possibility of sensing with a removable chip, the easy production of an engineered platform and the use of a special holder, which is also suitable for thermo-stabilized flow cells implementation
Bilateral vocal fold immobility in a patient with overlap syndrome rheumatoid arthritis/systemic sclerosis
No full textBilateral vocal fold immobility (BVFI) can be the result of a primary disorder or as an iatrogenic complication of surgery or intubation. Laryngeal involvement can be a rare complication of connective tissue disorders and it usually occurs in association with other symptoms and signs that indicate active disease. We present a case of BVFI in a patient with an overlap syndrome rheumatoid arthritis/systemic sclerosis, referred to our division because of dysphonia and dyspnea. The videolaryngostroboscopy showed the presence of BVFI. Physical examination, blood tests, lung and neck high resolution computed tomography scans did not demonstrate significant abnormalities. She was treated with pulses of intravenous methylprednisolone with slow improvement
Hand impairement in systemic sclerosis : a comparative analysis of different functional indices in a cross-sectional study
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