As the world continues to urbanize, sustainable development depends increasingly on the successful management of urban growth, especially in low-income and lower-middle-income countries where the pace of urbanization is projected to be the fastest. Many countries will face challenges in meeting the needs of their growing urban populations, including for housing, transportation, energy systems and other infrastructure, as well as for employment and basic services such as education and health care. Integrated policies to improve the lives of both urban and rural dwellers are needed, while strengthening the linkages between urban and rural areas, building on their existing economic, social and environmental ties.
Anki's source is available on GitHub. There are instructions for building in the docs/ folder. If you encounter problems with the build system please let us know, but please note the expectation is that you are able to dig into basic issues by yourself. If you have no programming experience, please use the packaged version instead.
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Floating-point arithmetic is considered an esoteric subject by many people. This is rather surprising because floating-point is ubiquitous in computer systems. Almost every language has a floating-point datatype; computers from PCs to supercomputers have floating-point accelerators; most compilers will be called upon to compile floating-point algorithms from time to time; and virtually every operating system must respond to floating-point exceptions such as overflow. This paper presents a tutorial on those aspects of floating-point that have a direct impact on designers of computer systems. It begins with background on floating-point representation and rounding error, continues with a discussion of the IEEE floating-point standard, and concludes with numerous examples of how computer builders can better support floating-point.
Builders of computer systems often need information about floating-point arithmetic. There are, however, remarkably few sources of detailed information about it. One of the few books on the subject, Floating-Point Computation by Pat Sterbenz, is long out of print. This paper is a tutorial on those aspects of floating-point arithmetic (floating-point hereafter) that have a direct connection to systems building. It consists of three loosely connected parts. The first section, Rounding Error, discusses the implications of using different rounding strategies for the basic operations of addition, subtraction, multiplication and division. It also contains background information on the two methods of measuring rounding error, ulps and relative error. The second part discusses the IEEE floating-point standard, which is becoming rapidly accepted by commercial hardware manufacturers. Included in the IEEE standard is the rounding method for basic operations. The discussion of the standard draws on the material in the section Rounding Error. The third part discusses the connections between floating-point and the design of various aspects of computer systems. Topics include instruction set design, optimizing compilers and exception handling.
The IEEE standard assumes that operations are conceptually serial and that when an interrupt occurs, it is possible to identify the operation and its operands. On machines which have pipelining or multiple arithmetic units, when an exception occurs, it may not be enough to simply have the trap handler examine the program counter. Hardware support for identifying exactly which operation trapped may be necessary.
Niklas Stattin is the Head of Digital Marketing at SuperOffice. He is passionate about bringing together data science and technology with brand building and design, to create digital strategies and grow businesses. You can connect with Niklas on LinkedIn.
The new rules require that all devices and systems used to secure cargo to or within a vehicle must be capable of meeting the performance criteria. All vehicle structures, systems, parts and components used to secure cargo must be in proper working order when used to perform that function with no damaged or weakened components that could adversely affect their performance. The cargo securement rules incorporate by reference manufacturing standards for certain types of tiedowns including steel strapping, chain, synthetic webbing, wire rope, and cordage. FMCSA has updated the rules to reference the November 15, 1999, version of the National Association of Chain Manufacturers (NACM) Welded Steel Chain Specifications. The agency notes that some of the working load limit values in the 1999 version differ slightly from the previous edition of this publication. Also, the 1999 version includes working load limits for a new grade of alloy chain, grade 100. The agency also changed its reference for synthetic webbing from the 1991 edition to the 1998 edition of the Web Sling and Tiedown Association's publication. Generally, the working load limits are the same as those in the 1991 publication. Changes in the references do not necessarily mean the older securement devices need to be replaced. Motor carriers are not required to replace tiedown devices purchased prior to January 1, 2004. If the tiedowns satisfied the old rules, the devices should also satisfy the new rules.
393.118 - Dressed Lumber and Similar Building Products The rules in this section apply to the transportation of bundles of dressed lumber, packaged lumber, building products such as plywood, gypsum board or other materials of similar shape. Lumber or building products that are not bundled or packaged must be treated as loose items and transported in accordance with the general cargo securement rules. For the purpose of this section, the term " bundle " refers to packages of lumber, building materials or similar products which are unitized for securement as a single article of cargo.
From information gathered in household surveys to pixels captured by satellite images, data can inform policies and spur economic activity, serving as a powerful weapon in the fight against poverty. More data is available today than ever before, yet its value is largely untapped. Data is also a double-edged sword, requiring a social contract that builds trust by protecting people against misuse and harm, and works toward equal access and representation.
Some products can support AES New Instructions with a Processor Configuration update, in particular, i7-2630QM/i7-2635QM, i7-2670QM/i7-2675QM, i5-2430M/i5-2435M, i5-2410M/i5-2415M. Please contact OEM for the BIOS that includes the latest Processor configuration update.
Through Blue Transformation, FAO is ready to provide existing and emerging knowledge and tools to Members and partners and build capacity to maximize the contribution of aquatic food systems to food security, nutrition and affordable healthy diets, ensuring the achievement of the Sustainable Development Goals.
This would include action to build global capacity to regularly collect and evaluate data to support decision-making, particularly in regions with limited data and poor capacity. This would also strengthen social outcomes, promote equitable livelihoods and secure access of small producers to resources and services.
The content on this page provides general consumer information. It is not legal advice or regulatory guidance. The CFPB updates this information periodically. This information may include links or references to third-party resources or content. We do not endorse the third-party or guarantee the accuracy of this third-party information. There may be other resources that also serve your needs.
IPBES is to perform regular and timely assessments of knowledge on biodiversity and ecosystem services and their interlinkages at the global level. Also addressing an invitation by the Conference of the Parties of the Convention on Biological Diversity (CBD) to prepare a global assessment of biodiversity and ecosystem services building, inter alia, on its own and other relevant regional, subregional and thematic assessments, as well as on national reports.
The next development was the paper pad system. Diplomats had long used codes and ciphers for confidentiality and to minimize telegraph costs. For the codes, words and phrases were converted to groups of numbers (typically 4 or 5 digits) using a dictionary-like codebook. For added security, secret numbers could be combined with (usually modular addition) each code group before transmission, with the secret numbers being changed periodically (this was called superencryption). In the early 1920s, three German cryptographers (Werner Kunze, Rudolf Schauffler, and Erich Langlotz), who were involved in breaking such systems, realized that they could never be broken if a separate randomly chosen additive number was used for every code group. They had duplicate paper pads printed with lines of random number groups. Each page had a serial number and eight lines. Each line had six 5-digit numbers. A page would be used as a work sheet to encode a message and then destroyed. The serial number of the page would be sent with the encoded message. The recipient would reverse the procedure and then destroy his copy of the page. The German foreign office put this system into operation by 1923.[11]
Starting in 1988, the African National Congress (ANC) used disk-based one-time pads as part of a secure communication system between ANC leaders outside South Africa and in-country operatives as part of Operation Vula,[35] a successful effort to build a resistance network inside South Africa. Random numbers on the disk were erased after use. A Belgian airline stewardess acted as courier to bring in the pad disks. A regular resupply of new disks was needed as they were used up fairly quickly. One problem with the system was that it could not be used for secure data storage. Later Vula added a stream cipher keyed by book codes to solve this problem.[36] 2ff7e9595c
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