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Bluetooth wireless technology (BT) operates in the unlicensed Industrial, Scientific, Medical (ISM) band in the 2.4GHz frequency range. It randomly uses 79 1Mhz wide channels ranging from 2.402MHz to 2.480MHz. Each channel is occupied for a maximum time slot of 625us. During this time the radio must change the operating frequency, receive or transmit data, and provide enough off time before switching to the next hop frequency. In reality, the time the radio is actually transmitting on a given channel is much less and is dependent on the amount of data being transmitted. WIFI WiFi or 802.11 b/g, also operates in the same ISM band as BT. Due to complicated modulation techniques, 802.11g channels are 20MHz wide while 802.11b channels are 22MHz wide. This means a common WiFi channel can occupy from 20 to 22 BT channels. COURTESY: HTTP://EN.WIKIPEDIA.ORG/ WIKI/IEEE_802.11B-1999 INTERFERENCE For an RF signal to be received by the radios receiver, the RF signal must contain enough energy to be detected by the receiver circuit. The minimum receive level is known as the receivers sensitivity. This is similar to the lowest whisper that a human ear can detect. What if there happens to be two signals present at the same time and both are greater than the receiver’s sensitivity? Which signal will the radio detect? One would think that it would not be able to correctly detect either signal. That would be true if both signals are close to the same power level. If one signal had a higher power level than the other signal by a specific amount, the radio would be able to detect the more powerful signal. This is similar to a human ear being able to clearly understand members at a dinner table while there are many others talking at tables that are further away. The minimum ratio of power level for two signals when a radio can correctly detect the desired signal is known as the carrier/interferer ratio, or C/I. This means that two RF signals can exist on the same frequency at the same time without causing interference if the ratio of their power levels meet the radios C/I specification.
Okay, so what is a robot? Per definition of en.wikipedia.org, the Holder of All Human Knowledge, a robot is: a mechanical device that can perform physical tasks. A robot may act under the direct control of a human (eg. the robotic arm of the space shuttle) or autonomously under the control of a pre-programmed computer. In the context of Science Olympiad and other small engineering competitions, we are looking at the first type, human control. There are plenty of opportunities to put autonomous features into a Science Olympiad robot, but if you are reading this for content, it is likely beyond your scope and unnecessary. Therefore, for the purposes of this text only, a robot will be defined as: A mechanical device, operated under the direct control of a human, that is engineered to perform a specific task or accomplish a goal. In this case, the goal is to compete in Science Olympiad's Robot Ramble event. And win. More on that later. I'm not smart enough to build a robot! Yes you are. Modern technology has developed to the point at which it permeates our lives. One side effect of this is that it is much easier to learn and try out than in years past. The hobby robotics market is only increasing, and there are a number of companies that specifically make products catered to robots and their builders. Full directions and kits are available to build or program small robots. In some cases, they're even premade, and all you have to do is mess with them. This is often the best way to go about learning.
In recent years, tourism has been increasingly recognised for its economic potential to contribute to the reduction of poverty in developing countries. Its geographical expansion and labour intensive nature support a spread of employment and can be particularly relevant in remote and rural areas, where live three quarters of the two billion people under extreme poverty conditions. Statistics show that tourism in LDCs is still limited: 2.6% of the world market share in terms of international tourist arrivals (ITAs) and of international tourism receipts (ITRs). However, the growth in ITAs has been faster in LDCs than in the developing countries as a whole: 42.5% in the former and 30.8% in the latter between 2001 and 2005 (15.8% for the world). Also in terms of ITRs: 50.3% growth in LDCs and 40.6% in the developing world between 2001 and 2004 (33.2% for the world). There are several reasons that make tourism an especially suitable economic development sector for LDCs1: 1. Tourism is consumed at the point of production; the tourist has to go to the destination and spend his/her money there, opening an opportunity for local businesses of all sorts, and allowing local communities to benefit through the informal economy, by selling goods and services directly to visitors; 2. Most LDCs have a comparative advantage in tourism over developed countries. They have assets of enormous value to the tourism industry - culture, art, music, natural landscapes, wildlife and climate, including World Heritage Sites. Visits by tourists to such sites can generate employment and income for communities as well as helping in the conservation of cultural and natural assets; 3. Tourism is a more diverse industry than many others. It has the potential to support other economic activities, both through providing flexible, part time jobs that can complement other livelihood options, and through creating income throughout a complex supply chain of goods and services;
For Spouse Deployed o Write separate letters to your children periodically o Share as much information as you can about your daily life and work For Spouse at Home For Spouse at Home o Ignore rumors and try to wait patiently for official date, time, and location information for your partner’s return o Participate in any preparation for reunion activities that might be available o Maintain the healthy self-care practices you established before the departure; try to eat and sleep sensibly o Participate in a support group, whether formal or informal; do not become isolated o Help your children express their feelings and stay in touch with their absent parent
Business people use informal methods to represent business processes (BP), having the main objective to support an enterprise organization. On the other hand, application software is increasingly based on Service Oriented Architectures, where the application logic is represented by executable BP (e.g., by using BPEL.) Despite both are aiming at BP modelling, the methods used by business people and IT specialists are quite different. The former use informal, descriptive methods, with an intuitive semantics difficult to be translated to the formal representation needed in the IT world. This paper presents the main lines of an ontological framework for the representation of BP semantics: BPAL (Business Process Abstract Language.) It is primarily conceived to provide a formal semantics to BPMN, an informal BP modelling method that is emerging in the business world. The modelling categories of BPAL are based on well accepted business notions, such as activity, decision, role. We believe that it may be useful beyond BPMN, in more general business contexts. BPAL is an abstract language (no drawing symbols are provided) having a procedural semantics (allowing a translation to an executable form, BPEL), and a declarative semantics, to be processed by an inference engine.
Quality aspects become increasingly important when business process modeling is used in a large-scale enterprise setting. In order to facilitate a storage without redundancy and an efﬁcient retrieval of relevant process models in model databases it is required to develop a theoretical understanding of how a degree of behavioral similarity can be deﬁned. In this paper we address this challenge in a novel way. We use causal footprints as an abstract representation of the behavior captured by a process model, since they allow us to compare models deﬁned in both formal modeling languages like Petri nets and informal ones like EPCs. Based on the causal footprint derived from two models we calculate their similarity based on the established vector space model from information retrieval. We validate this concept with an experiment using the SAP Reference Model and an implementation in the ProM framework. Keywords: Business Process Modeling, Event-driven Process Chains, Similarity, Equivalence.
Asked by SixfootJames on 2012-10-24T11:49:33-04:00 I've been given an old bag of Ricoh camera and lenses and I find that it would be such a waste not to be able to use in some way all this again for something. Can you give me some suggestions as to how to use this kind of equipment with a newer camera like a Canon 600D? Archives Arts Questions and Answers Photography Questions and Answers Oct 24th, 2012 Archives Week 43, 2012 Archives October, 2012 Archives Tags Lens Dslr Old Lenses Best Answer Answered by John Cavan on 2012-10-24T23:11:20-04:00 Ricoh, historically, used the Pentax K-mount for their film SLR cameras, but with a slight and important modification: they added a pin that's used to indicate the aperture is in auto mode for shutter priority use. With some careful work, you can http://forums.dpreview.com/forums/post/25959708 for use on K-mount bodies made by Pentax or Samsung or with a http://rads.stackoverflow.com/amzn/click/B003Y3EJMU for Canon EOS digital and film variants. Nevertheless, if you have Ricoh K-mount lenses, that pin has to go. You can confirm if you have these based on this helpful bit of info from Wikipedia: The R-K mount is used on Rikenon P lenses, Ricoh bodies that include the letter 'P' in their model number, and some non-Ricoh lenses. Now, it's also possible that the Ricoh lenses are M42 screw-mount lenses also known, funny enough, as the Pentax mount when most film cameras had it and Pentax was the SLR king. If that is the case, and it's easy to tell by just looking for threads on the lens mount, then you can easily get...
CHANGING STYLES How Styles are Identified … Some furniture styles are identified by the person who originated the design Some furniture styles are identified by the general design movement of the time Some furniture styles are identified by the era in which they were first made. – Called “Period Pieces” – Often named for the king or queen who was in power during that time Classic and Fads Classics – Stand the test of time; now in museums or collector’s homes; replicas created Fads – Come in and out; some fads never return WHY DESIGNS CHANGE Several reasons … available materials, methods of manufacturing, changes in lifestyle, tastes Materials and Manufacturing Modern synthetic materials have different properties than traditional wood, thereby creating potential for new designs. – Example – Wood chairs are carved while some plastic chairs may be molded from liquid plastic. As new materials are developed, furniture makers experiment with different processes to develop new furniture. WHY DESIGNS CHANGE Lifestyle Changes Designs often reflect the time during which the pieces were made and the lifestyles of the people who used the furniture. • Example – 18th century in France and England … much of the furniture was formal and elegant, reflecting the lifestyle of the royal courts. • Example – Early colonialist of the New World … much plainer and informal.
Messenger luggage are often the top rated in all around usefulness and adaptability and flexibilitysuppleness and adaptability. From leather to material, a superb top notch messenger handbag will maintain you well prepared and prepared. Undoubtedly the messenger tote of preference would be created of leather. A content backpack with leather material highlights would even be a beautiful replacement. Leather material, significantly more than just about any other material, bridges the gap concerning small business and informal situations. Its transitional popular features of magnificence and toughness cause it to really suitable and flexible and versatile in nearly any atmosphere.
Meeting with an Ameriprise financial advisor is an important first step. It's an opportunity to get to know an advisor and share your goals and dreams. You're under no obligation; your initial meeting with an Ameriprise financial advisor will be relaxed and informal.