![]() ![]() Posted in Birds, Game Reserves | Tagged Addo Elephant National Park, bokmakierie, Cape turtle dove, Cattle Egret, Eastern Cape, Egyptian Goose, Rednecked Spurfowl | 36 Comments Post navigation This one is looking for seeds in the veld in the Addo Elephant National Park. Strangely enough, I seldom see them in my front garden as they seem to prefer the area behind our home. The sound of Cape turtle doves – called R ing-necked dove ( Streptopelia capicola) – filter through our suburb daily. I occasionally see these birds on the edge of town too. This lone Egyptian goose was actually on its way to join a few others grazing nearby. It is refreshing to see a flock of them gathered at the edge of a waterhole. ![]() Given the various groups of donkeys and the Urban Herd of cattle that roam around our town, cattle egrets are a common sight as they keep these animals company. Jack’s Picnic Site in the Addo Elephant National Park provides wonderful opportunities to see them really close up. Red-necked spurfowl have been visiting my garden regularly over the past few weeks to peck at the seed spilled on the ground below the feeders. I often hear them, yet rarely see them in my garden so am always pleased to find them here. This Bokmakierie was perched close to the road. The Addo Elephant National Park is a delightful place for watching birds. Posted in Birds, Game Reserves, Travel, trees | Tagged Egyptian Goose, Garden Route National Park, Helmeted Guineafowl, Knysna turaco, White-necked Raven, Wilderness | 27 Comments They were engaged in this messy activity for a while until one of the Egyptian Geese bore down on them and chased them away!Īnother bird we were privileged to see and hear a lot of was the very beautiful Knysna Turaco. How wrong we were! A pair of White-necked Ravens could be seen pecking and pulling at the plastic bags – one even using its foot for extra leverage – in order to tear them open and inspect the contents. We wondered about the litter lying around – very unusual for a national park – and assumed monkeys had been responsible for tearing open the garbage bags that had been put out for collection. They are obviously used to having human visitors around and were not at all perturbed by our presence. Later in the afternoon, a small flock of Helmeted Guineafowl picked their way across the grass. While we had been entertained by a flock of goslings during our earlier visit, this time we were kept company by a pair of Egyptian Geese that were quite at home on the lush lawns. Our rondavel was situated in tranquil surroundings next to the Touws River among many beautifully shady trees. We so enjoyed our rather serene stopover after Easter at the Ebb-and-Flow Rest Camp which forms a part of the Wilderness Section of the Garden Route National Park that we broke our journey here again. I think the Three-banded Plover is a particularly attractive bird: ![]() Lastly, I want to show off a common resident seen all over South Africa, especially around freshwater wetlands. This flock of Greater Flamingos is flying over a dam in Gauteng:Īlthough I do not see them very often, the African Black Duck is fairly commonly observed along streams and rivers in this country: Some time ago I proudly showed you photographs of the flamingos we were able to observe in the West Coast National Park. The rest of the birds on show today are indigenous and the first of these is a large local resident at some lakes, dams and rivers – the Goliath Heron :Ī bird that is ubiquitous all over South Africa – and which is making increasing inroads in the UK – is the Egyptian Goose: First up though is a native of Australia that turns up in odd places – the Black Swan: You see enough of the regular visitors to our garden, so I thought of spreading my wings a little to show you a sampling of some of the many other birds we see in this country. ![]()
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![]() Like many famous people and celebrities, Julia McKenzie keeps her personal life private. Here we are updating just estimated networth of Julia Kathleen Nancy McKenzie salary, income and assets. Throughout the early mid 2000s she played Ariadne Oliver in radio adaptations of Agatha Christie novels starring John Moffatt as Hercule Poirot one such novel was Elephants Can Remember. Was nominated for Broadway's 1977 Tony Award as Best Actress (Featured Role - Musical) for "Side by Side by Sondheim" (under the name "Julie N. She was awarded the Laurence Olivier Theatre Award in 1994 (1993 season) for Best Actress in a Musical for her performance in Sweeney Todd at the Royal National Theatre. ![]() Maureen was married to her husband and award-winning writer Jack until his death from bone marrow cancer in 2004. It helps to already be famous to become a social media influencer, but she demonstrates that you need to have a raw or personal touch and engage with your followers if you want to do well on Instagram Facebook, Twiter, Youtube, etc. There is not much info available about his wife and his daughters. We obtain this information from publically accessible sources and endeavor to make sure it's correct. Darryl Hinton She is known for her work on Notes on a Scandal (2006), Bright Young Things (2003) and Agatha Christie's Marple (2004). Julia McKenzie is a member of famous Stage Actress list. She appeared with Dame Judi Dench in the British television series Cranford. Do you want to know with whom she is dating, when did she break up, or what is going on in her love life? For Sale: 649900 - Single Family, 3 bed, 2 bath, sqft at 73 JULIA Crescent in Orillia. her net worth has been growing significantly in 2021-2022. Once more details are available on who she is dating, we will update this section. She has brown hair and a pair of blue eyes. Wikifamouspeople has ranked Julia McKenzie as of the popular celebs list. Geraldine McEwan (born Geraldine McKeown - 30 January 2015) was an English actress with a diverse history in theatre, film and television. We also cover here her sister, brother, and relatives information. Film credits include Hotel du Lac (1986), Shirley Valentine (1989), Bright Young Things (2003), These Foolish Things (2006) and Notes on a Scandal (2006). Just about everybody in the world knows about Miss Marple and has an opinion of what she should be like, so I'm under no illusions about the size of the task ahead. ![]() ![]() Talking about Lee McKenzie's age, she is 41 years old as of 2019. During 2012, she also played the role of Betty Nicholas in the ITV television series The Town. Below you can check her net worth, salary and much more from previous years. McKenzie was appointed a Commander of the Order of the British Empire (CBE) in the 2018 New Year Honours for services to drama. ![]() ![]() The installer refuses earlier OS X releases. The Software Bundle can be installed only on OS X v10.7.3 (Lion) or newer. Note: If you choose to install this bundle into a system-wide location such as /usr/local, you must first login as root to gain the necessary permissions. When the installation is complete, you can view the log file, which resides in the following directory: ~/.nbi/log.
![]() ![]() But one quick tip is to match the camera color to the color of your door trim. Holding the 1080p Indoor/Outdoor cameras in-hand, you’ll notice the devices look and feel like high-quality modern security cameras - almost like what you’d find in a government building. My Experience With Night Owl Security Cameras First Impressions One thing has remained true, though: No matter which Night Owl camera you buy, you won’t have to pay a monthly cloud fee to store videos as they come with a local video recording device.īefore jumping into my experience with the cameras, here are a few key stats to know about Night Owl: Night Owl Camera Features In 2009, they only had a few wired security camera options, but today, they also offer wireless (plugged in to power but uses Wi-Fi) and wire-free (battery-powered Wi-Fi) camera options. I found that Night Owl did, in fact, grow since its cameras first hit the shelves. So I’ll give Night Owl the benefit of the doubt here. But then again, Night Owl doesn’t have the same name recognition as the Ring, for example, or Google Nest’s super-high-tech cams. Unfortunately, there’s not a lot of info on the company to be found. The Night Owl brand has been in business since 2009, 1 and they bill themselves as the fastest- growing manufacturer of security DVRs and cameras. You may appreciate this, but it’s pretty standard for the industry. Of course, their hardware is manufactured abroad (you know, to cut costs), but their engineers, software designers, and servers are all located stateside. Unlike many security companies that have their roots in China, Night Owl was founded in Naples, Florida. ![]() ![]() ![]() ![]() It has been shown that neglect of polarization led to a 15% difference between theory and experiment in the case of FeS 2, whereas including it reduced the error to 2%. As an example, one may consider the case of iron-pyrite FeS 2. In these cases the polarization energy E pol associated with ions on polar lattice sites may be included in the Born–Haber cycle. Effect of polarization įor certain ionic compounds, the calculation of the lattice energy requires the explicit inclusion of polarization effects. The bond radii are similar but the charge numbers are not, with BaO having charge numbers of (+2,−2) and NaCl having (+1,−1) the Born–Landé equation predicts that the difference in charge numbers is the principal reason for the large difference in lattice energies.Ĭlosely related to this widely used formula is the Kapustinskii equation, which can be used as a simpler way of estimating lattice energies where high precision is not required. when ions are closer together the lattice energy increases (becomes more negative)īarium oxide (BaO), for instance, which has the NaCl structure and therefore the same Madelung constant, has a bond radius of 275 picometers and a lattice energy of −3054 kJ/mol, while sodium chloride (NaCl) has a bond radius of 283 picometers and a lattice energy of −786 kJ/mol.as the charges on the ions increase, the lattice energy increases (becomes more negative),.The Born–Landé equation above shows that the lattice energy of a compound depends principally on two factors: N A is the Avogadro constant M is the Madelung constant, relating to the geometry of the crystal z + is the charge number of the cation z − is the charge number of the anion e is the elementary charge, equal to 1.6022 ×10 −19 C ε 0 is the permittivity of free space, equal to 8.854 ×10 −12 C 2 J −1 m −1 r 0 is the nearest-neighbor distance between ions and n is the Born exponent (a number between 5 and 12, determined experimentally by measuring the compressibility of the solid, or derived theoretically). The relationship between the lattice energy and the lattice enthalpy at pressure P Following this convention, the lattice energy of NaCl would be +786 kJ/mol. as the energy required to convert the crystal into infinitely separated gaseous ions in vacuum, an endothermic process. Some chemistry textbooks as well as the widely used CRC Handbook of Chemistry and Physics define lattice energy with the opposite sign, i.e. ![]() In the case of NaCl, lattice energy is the energy change of the reaction The concept of lattice energy was originally applied to the formation of compounds with structures like rocksalt ( NaCl) and sphalerite ( ZnS) where the ions occupy high-symmetry crystal lattice sites. Lattice energy and lattice enthalpy Sodium chloride crystal lattice Since it generally cannot be measured directly, the lattice energy is usually deduced from experimental data via the Born–Haber cycle. The size of the lattice energy is connected to many other physical properties including solubility, hardness, and volatility. ![]() It is a measure of the cohesive forces that bind ionic solids. In chemistry, the lattice energy is the energy change upon formation of one mole of a crystalline ionic compound from its constituent ions, which are assumed to initially be in the gaseous state. In both cases, a larger magnitude for lattice energy indicates a more stable ionic compound.Energy change upon the formation of one mole of ionic solid Thus, if you are looking up lattice energies in another reference, be certain to check which definition is being used. Some texts use the equivalent but opposite convention, defining lattice energy as the energy released when separate ions combine to form a lattice and giving negative (exothermic) values. Note that we are using the convention where the ionic solid is separated into ions, so our lattice energies will be endothermic (positive values). The bond energy for a diatomic molecule, D X–Y, is defined as the standard enthalpy change for the endothermic reaction: The energy required to break a specific covalent bond in one mole of gaseous molecules is called the bond energy or the bond dissociation energy. The bond length is the internuclear distance at which the lowest potential energy is achieved. The potential energy of two separate hydrogen atoms (right) decreases as they approach each other, and the single electrons on each atom are shared to form a covalent bond. ![]() ![]() Following the beetle's impact in Hawaii, there are now concerns about the potential consequences to Australia should the beetle be detected there. ![]() It is believed to have been brought there in air cargo. The beetle is an invasive species in Hawaii, where it was found on December 23, 2013. However, a new haplotype – CRB-G – has been invading the Pacific at a rate of about one new island every two years, unaffected by OrNV control programs already in place because CRB-G is immune. A nudivirus – the Oryctes rhinoceros nudivirus ( OrNV) – has been very successful in the Pacific islands and for 30 years the invasion was halted. Ĭontrol measures include the use of cultural methods, such as crop sanitation and the use of cover crops, pheromones, together with biological controls such as the manipulation of Metarhizium majus and M. Contributors to the fund were Australia, France, New Zealand, the United Kingdom, the United States of America, and Western Samoa. In 1964, accidental introduction in some countries, and the perceived threat led to a special United Nations fund being established through the South Pacific Forum, with the goal of "eradication of the rhinoceros beetle and related insects in the South Pacific". There are horn-shaped protuberances on the anterior surface. Pupa is yellowish-brown with about 50 mm in length. Thoracic spiracles are larger than abdominal spiracles. Respiratory plate consists with small, round to oval holes. Thoracic spiracles are about 1.85 to 2.23 mm long. Cranium is dark brown, with many round pits. Grubs are yellowish-white where the third instar grow to 60 to 100 mm in length. ![]() Grub stage undergo three instars before becoming a pupa. After one week, they swell and later hatch within 11 to 13 days. Eggs are typically laid inside rotting vegetative matter. Eggs Īdult female lay yellowish-white oval eggs which are about 3 mm in diameter. There are two tubercles on the thoracic ridge. Male is characterized by a rounded, shiny terminal abdominal segment whereas female has a relatively hairier 'tail'. Adults are dark brown to black in color with shiny dorsum. This large species has an average length of about 33 to 40 mm. The beetle kills the palms (particularly newly planted ones) when the growing point is destroyed during feeding. Damaged fronds show typical triangular cuts. rhinoceros attacks the developing fronds of raffia, coconut, oil, and other palms in tropical Asia and a number of Pacific islands. The Asiatic rhinoceros beetle, coconut rhinoceros beetle or coconut palm rhinoceros beetle, ( Oryctes rhinoceros) is a species of rhinoceros beetle of the family Scarabaeidae. ![]() ![]()
![]() ![]() GIMP for Polish-speaking users: news, forum, tutorials, gallery.įorum, tutorials, galleries and resources.įorum, tutorials, galleries and resources. News, blog and forum in Magyar (Hungarian). News, tutorials, forum, galleries for Spanish-speaking users. Lithuanian site about GIMP, featuring news, tutorials, forum and galleries. German GIMP platform offering tips & information about GIMP and a growing tutorials database.Īn international community site offering tips, news and a growing tutorials database. News, tutorials, user-to-user help and galleries. Resources (brushes, scripts, plug-ins) for GIMP and other applications Clubs & Communities ¶Įnglish-spoken community to discuss usage of GIMP This OpenDirectoryProject-category holds links to GIMP-sites (like this page).Ī video podcast about the free graphics program GIMP Just one page, but contains the most up-to-date collection of links to GIMP-sites.Įssentially the same as the one above, but this time in English. Has lots of GIMP tutorials most of the texts are in German and English. ![]() This site lets you find and comment on GIMP tutorials hosted on other sites (note: with advertisements). This site lets you find and rate GIMP tutorials hosted on other sites (note: with advertisements). GNOME GIT GNOME GIT source code repository Tutorials ¶Ī collection of tutorials aimed at photography and retouching. GIMP bugtracker - / GNOME/gimp/Īn image processing library based on GObjects.If you want to link to us instead, please have a look at this other page. This page contains the best links to interesting GIMP-related sites. ![]() ![]() Because each person is different, each person’s object would have different data attributes. The class description might also include functions like “SayMyName,” which prints that person’s name to the screen.Ī family could be created by creating individual person objects from the class for each family member. The person class would have characteristics that represented data like the person’s age, name, height, and so on. Data Structures are also one of the important topics in OOPs languages like C.Ī class that represents a person is a simple example. Multiple independent objects can be instantiated-or represented-from the same class, and they can interact in a variety of ways. Java, Python, and C++ are examples of popular class-based OOP languages. In object-oriented programming, a group of data properties is combined with functions or methods to form an “object.” OOP languages are often class-based, which implies that a class defines the data characteristics and functions that are used to create objects, which are instances of the class. The basic goal of OOPs concepts with real time examples is to connect data and the functions that operate on it so that no other part of the code may access it except that function. Inheritance, hiding, polymorphism, and other real-world concepts are all part of object-oriented programming. Object-Oriented Computers, or OOPs concepts with real time examples, refer to programming languages that make use of objects. OOPs and its concepts with real-time examples can help you to discover and learn all the aspects of object-oriented programming easily. In this tutorial, we’ll go through the fundamentals of OOP and illustrate them with simple examples. When it comes to designing and managing software programs, understanding object-oriented programming (OOP) can be extremely useful. In today’s technology-driven environment, computer programming skills are in high demand. ![]() OOPs is very useful in nearly every programming language like in Java , C++ The OOPs concepts with real-time examples are widely utilized in Java because it allows for code reusability while still preserving security. To begin, OOP is a programming style that needs programmers to construct objects and use them throughout the program in functions that demand the use of such objects. ![]() We’ll go over the fundamentals of Object-Oriented Programming and define terminology like abstraction, encapsulation, inheritance, and polymorphism in this post. ![]() ![]() ![]() ![]() ![]() Its similarities to the original transform, S(f), and its relative computational ease are often the motivation for computing a DFT sequence. The respective formulas are (a) the Fourier series integral and (b) the DFT summation. THE definitive, authoritative text on DSP - ideal for those with an introductory-level knowledge of signals and systems. While discrete-time signal processing is a dynamic, steadily growing field, its fundamentals are well formulated, and it is extremely valuable to learn them welL Our goal in this book is to uncover the fundamentals of the field by providing a coherent treatment of the theory of discrete-time linear systems, filtering, sampling, discrete-time. The spectral sequences at (a) upper right and (b) lower right are respectively computed from (a) one cycle of the periodic summation of s(t) and (b) one cycle of the periodic summation of the s(nT) sequence. For senior/graduate-level courses in Discrete-Time Signal Processing. If you are not an Illinois student or faculty member, you should. Written by prominent DSP pioneers, it provides thorough treatment of the fundamental theorems and properties of discrete-time linear systems, filtering. For a given value in the input sequence, the output sequence value depends on that present value. Fig 2: Depiction of a Fourier transform (upper left) and its periodic summation (DTFT) in the lower left corner. Oppenheim and Schafer, with Buck, Discrete-Time Signal Processing, Prentice Hall, 2nd Ed. Check for the causality of the function as follows: The output sequence, is the result of the multiplication of two sequences and, which is the input sequence itself. Time Signal Processing, 2nd edition, Prentice Hall, Englewood Cliffs, NJ. The FFT algorithm computes one cycle of the DFT and its inverse is one cycle of the DFT inverse. Johnson, Discrete representation of signals, Proc. The inverse DFT (top) is a periodic summation of the original samples. Right column: The DFT (bottom) computes discrete samples of the continuous DTFT. Its Fourier transform (bottom) is a periodic summation ( DTFT) of the original transform. Center-right column: Original function is discretized (multiplied by a Dirac comb) (top). The inverse transform is a sum of sinusoids called Fourier series. Fourier transform (bottom) is zero except at discrete points. Center-left column: Periodic summation of the original function (top). Left column: A continuous function (top) and its Fourier transform (bottom). In digital signal processing, the function is any quantity or signal that varies over time, such as the pressure of a sound wave, a radio signal, or daily. Fig 1: Relationship between the (continuous) Fourier transform and the discrete Fourier transform. Oppenheim, Pearson, 2010 - Computers - 1108 pages Discrete-Time Signal Processing, Third Edition is the definitive, authoritative text on DSP - ideal for those with introductory-level. ![]() |
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