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It is one of the poorest countries in the world with few natural resources. “Burkina” means “men of integrity” in the Moré language and “Faso” means “father's house” in the Dioula language. The name was chosen to reflect the 2 major languages spoken in the country. Burkina Faso means “Land of the Upright People”. Formerly known as the Republic of Upper Volta, it was renamed “Burkina Faso” on August 4, 1984, by President Thomas Sankara. Burkina Faso is a landlocked country in West Africa bordered by Mali, Niger, Benin, Togo, Ghana, and Côte d'Ivoire. Slime moulds are not just found in the woods they can also be spotted on decomposing vegetation or wood.Don’t let cold weather put you off, it often produces unique images.The final image is the result of 55 focus-bracketed images combined in Zerene Stacker. The tallest one was only 3mm high, including the ice. I was attracted to the way the ice had encased the slime mould, creating strange, windswept, leaf-like shapes. In January last year, following two days of freezing fog and sub-zero temperatures, I found some mature Comatricha growing on an old fence post lying on a pile of discarded, rotting timber. Minor stacking artefacts were tidied up in Photoshop. Post processing: Lightroom, Zerene Stacker and Topaz Denoise AI. Accessories: Tripod, cable release, three extension tubes. ![]() Taken with an Olympus OM-D E-M1 Mark II, Olympus M.Zuiko Digital ED 60mm f/2.8 Macro, 1/15sec at f/4, ISO 200. ‘Fungi’ Category Winner CUPOTY 04 Ice Encrusted Comatricha by Barry Webb Nationality: British Occupation: Gardener/photographer The more you practise your technique, the better prepared you’ll be to capture an image in the field. Macro photography can be tricky, and photogenic moments are often fleeting.Try photographing your subject from every angle.Be creative with the tools you have – this image was lit with headlamps!.The next day, both salamanders had sunk to the bottom of the pitcher. When I saw a pitcher that had two salamanders, both at the same stage of decay floating at the surface of the pitcher’s fluid, I knew it was a special and fleeting moment. Pitchers typically contain just one salamander prey at a time, although occasionally they catch multiple salamanders simultaneously. On the day I made this image, I was following researchers on their daily surveys of the plants. For a plant that’s used to capturing tiny invertebrates, a juvenile spotted salamander is a hefty feast! This population of northern pitcher plants in Algonquin Provincial Park is the first to be found regularly consuming a vertebrate prey. Typically, these plants feast on invertebrates – such as moths and flies – but recently, researchers at the Algonquin Wildlife Research Station discovered a surprising new item on the plant’s menu: juvenile spotted salamanders (Ambystoma maculatum). Instead of drawing nutrients up through their roots, this plant relies on trapping prey in its specialised bell-shaped leaves, called pitchers. Here there is no rich soil, but rather a floating mat of sphagnum moss. Northern pitcher plants (Sarracenia purpurea) are carnivorous, allowing them to survive in nutrient-poor bog environments. Post processing: Basic adjustments in Lightroom. Taken with a Canon EOS 5D Mark III, Laowa 15mm f/4 macro lens,1/100sec, ISO 1250. ![]() Photo credit: Samantha Stephenson/CUPOTY. Overall and ‘Animals’ Category Winner CUPOTY 04 Nature’s Pitfall by Samantha Stephens Nationality: Canadian Occupation: Photographer ![]() To see the winners and Top 100 pictures from CUPOTY 04, visit the website at To stay up to date with all things CUPOTY (and receive fresh creative content) sign up to my fortnightly newsletter via the CUPOTY website.Ĭlose-up Photographer of the Year 04 winners share the stories and techniques behind their pictures with co-founder Tracy Calder. Samantha Stephens took the overall title with her incredible picture of northern pitcher plants digesting juvenile spotted salamanders, while Nathan Benstead was named Young Close-up Photographer of the Year 04 for his magical picture of slime mould fruiting bodies. This year there were 11 categories: Animals, Insects, Butterflies & Dragonflies, Invertebrate Portrait, Underwater, Plants, Fungi, Intimate Landscape, Manmade and Micro, as well as Young CUPOTY. It’s a fabulous gift, and one that I’m so grateful to benefit from. Many of these moments would have gone unnoticed if they had not been witnessed by people who have a natural sense of curiosity about the world. Often I have sat there in astonishment, marvelling at the magic of it all. I’ve been awestruck by a jellyfish that walks on its hands, a marble that resembles a cosmic wormhole and an egg that seems to contain the crucible of life within its watery walls. Among the 9,000 entries submitted to this year’s CUPOTY 04, I’ve seen salamanders being eaten by plants, slime moulds celebrated as works of art and spiders mimicking bird poo. ![]() Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. You can disable the automatic renewal function at any time by adjusting your account settings.Īny unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. It is not possible to cancel an existing in-app subscription. ![]() Your account will be charged for the next subscription period up to 24 hours prior to the current subscription expiring. Erase data quickly with one-time overwriting, which can save you time for plenty of data files. Clean unwanted data from iPhone, iPad or iPod touch. Payment will be charged to iTunes Account at confirmation of purchase.Īll subscriptions automatically renew if it is not cancelled within 24 hours before the end of the current subscription period. FoneEraser for iOS is the best iOS data cleaner which can easily erase all contents and settings on iPhone, iPad or iPod completely and permanently. 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One of the most human and perversely admirable characters in fiction. ![]() The full-bearded alcoholic, rageaholic, commitment-phobic British sea captain lucked into a fortune ( Red Rackham's Treasure) and wound up drinking himself insensible in Marlinspike Hall, occasionally giving vent to amazingly picturesque salty language (often through a megaphone) when assailed by bashi-bazouks, troglodytes, prize purple jellyfish, Incan mummies and Signorina Bianca Castafiore, 'the Milanese nightingale'. Tintin's most enduring sidekick turned up in the ninth of the young reporter's adventures, and became more and more prominent thereafter – eventually becoming practically the main character. The energy fuelling it, however, is not and if Spawn ever exhausts his reserves it's a one-way ticket back to hell.īuy Spawn Origins Volume 1 now on Amazon 49. 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![]() Resample x along the given axis using polyphase filtering. Resample x to num samples using Fourier method along the given axis. Remove linear trend along axis from data. Sosfiltfilt(sos, x)Ī forward-backward digital filter using cascaded second-order sections.Ĭompute the analytic signal, using the Hilbert transform.ĭecimate(x, q)ĭownsample the signal after applying an anti-aliasing filter.ĭetrend(data) Savgol_filter(x, window_length, polyorder)Īpply a Savitzky-Golay filter to an array.ĭeconvolves divisor out of signal using inverse filtering.įilter data along one dimension using cascaded second-order sections.Ĭonstruct initial conditions for sosfilt for step response steady-state. This implements the following transfer function.įilter data along one-dimension with an IIR or FIR filter.Ĭonstruct initial conditions for lfilter given input and output vectors.Ĭonstruct initial conditions for lfilter for step response steady-state.įiltfilt(b, a, x)Īpply a digital filter forward and backward to a signal. The second section uses a reversed sequence. Implement a smoothing IIR filter with mirror-symmetric boundary conditions using a cascade of second-order sections. This implements a system with the following transfer function and mirror-symmetric boundary conditions. Implement a smoothing IIR filter with mirror-symmetric boundary conditions using a cascade of first-order sections. Perform a Wiener filter on an N-dimensional array. Perform a median filter on an N-dimensional array. Smoothing spline (cubic) filtering of a rank-2 array. Gaussian approximation to B-spline basis function of order n.Ĭompute cubic spline coefficients for rank-1 array.Ĭompute quadratic spline coefficients for rank-1 array.Ĭoefficients for 2-D cubic (3rd order) B-spline.Ĭoefficients for 2-D quadratic (2nd order) B-spline:Įvaluate a cubic spline at the new set of points.Įvaluate a quadratic spline at the new set of points. ![]() Signal processing ( scipy.signal) # Convolution #Ĭross-correlate two N-dimensional arrays.Ĭonvolve two N-dimensional arrays using FFT.Ĭonvolve two N-dimensional arrays using the overlap-add method.Ĭonvolve2d(in1, in2)Ĭorrelate2d(in1, in2)Ĭross-correlate two 2-dimensional arrays.Ĭonvolve with a 2-D separable FIR filter.Ĭhoose_conv_method(in1, in2)įind the fastest convolution/correlation method.Ĭorrelation_lags(in1_len, in2_len)Ĭalculates the lag / displacement indices array for 1D cross-correlation. Statistical functions for masked arrays ( To view the filter coefficients, click the Table or Plot buttons.K-means clustering and vector quantization ( Then, click the Make Filter button to create the filter, using the specified parameters, and to plot the frequency response of the filter. Select the number of filter elements, the cut-off frequencies, and the filter type. This section allows you to design different types of filters. The sampling frequency is extracted from the file, and once the file is loaded, the time and frequency responses are plotted. To load a WAV file as the input signal, click the Load File button, which will open a file dialog box. After the impulse response has been truncated, shifted, and sampled, the FIR filter coefficients are shown in red. The diagram indicates the impulse response in blue. An ideal filter has the impulse response defined by the sinc function: sin x x For example, consider the low pass filter. ![]() If the impulse response is nonzero for negative time (the filter is anti-causal) the response must also be shifted to the right until all of the impulse response coefficients are located in the positive time region. ![]() The infinitely long impulse response must be truncated to be implemented. The effect of the filter is displayed in a frequency domain.įinite Impulse Response (FIR) Filter DesignĪ FIR filter is derived from the impulse response of the desired filter and then sampled to convert it to a discrete time filter. Four different types of filters are illustrated: low pass, high pass, band pass, and band stop. A Finite Impulse Response (FIR) filter is designed and applied to an input signal stored in a file. |