نتایج جستجو برای: نگاشت انتخابی slm
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The selected mapping (SLM) is a major scheme for peak-to-average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) systems. It has been shown that the complexity of the traditional SLM scheme can be substantially reduced by adopting the conversion vectors to replace the inverse fast Fourier transform (IFFT) operations [4]. Each conversion vector is obtained by ta...
In order to investigate the spatiotemporal organization of neuronal activity in local microcircuits, techniques allowing the simultaneous recording from multiple single neurons are required. To this end, we implemented an advanced spatial-light modulator two-photon microscope (SLM-2PM). A critical issue for cerebellar theory is the organization of granular layer activity in the cerebellum, whic...
Glioblastoma is the most frequent malignant brain tumor. Even with aggressive treatment, prognosis for patients is poor. One characteristic of glioblastoma cells is its intrinsic resistance to apoptosis. Therefore, drugs that induce alternative cell deaths could be interesting to evaluate as alternative therapeutic candidates for glioblastoma. Salinomycin (SLM) was identified through a chemical...
Surgical resection is the only potential cure for colorectal cancer with synchronous liver metastases (SLM). Simultaneous resection of colorectal cancer and SLM using robotic-assistance has been rarely reported. We demonstrate that robotic-assisted simultaneous resection of colorectal cancer and SLMs is feasible, safe, and has potential to demonstrate good oncologic outcomes.
the objectives of the study were to evaluate the effects of sabara leaf meal on growth performance, nutrient digestibility and haematological parameters of red sokoto goats. bucks were managed in a complete randomized design with 4 treatments and 3 replicates. the sabara leaf meal (slm) was fed at concentration of 0, 10, 20 and 30% in treatment 1, 2, 3 and 4 respectively. the experimental diets...
Selective laser melting (SLM) is an additive manufacturing (AM) process which is used for producing metallic components. Currently, the integrity of components produced by SLM is in need of improvement due to residual stresses and unknown fracture behavior. Titanium alloys produced by AM are capable candidates for applications in aerospace and industrial fields due to their fracture resistance,...
We present a novel fiber-optic confocal microscope in which the scanning operation is achieved by use of a spatial light modulator (SLM) to sequentially illuminate individual fibers or patterns of multiple fibers. Experimental images are presented, and the optical-sectioning capability of the device is demonstrated. The novel SLM-based system is more optically efficient, achieves higher contras...
We demonstrate a 1×2 wavelength-division multiplexing switch for few-mode fiber based on a spatial light modulator. We measure its crosstalk, frequency roll-off, mode dependence and other transmission characteristics. Introduction In response to saturating capacity achievable in single-mode fiber, space-division multiplexing (SDM) has become an established research area. Parallelization and com...
Selective laser melting (SLM) is widely used in making three-dimensional functional parts layer by layer. Temperature magnitude and history during SLM directly determine the molten pool dimensions and surface integrity. However, due to the transient nature and small size of the molten pool, the temperature gradient and the molten pool size are very challenging to measure and control. A 3-dimens...
The high peak-to-average power ratio of the transmit signal is a serious drawback of multicarrier transmission. To cope with this problem, peak power reduction schemes have been developed. One popular method is selected mapping (SLM), where several alternative representations are generated from the information carrying signal and that one which exhibits the lowest peak power is selected for tra...
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