Software provides support for requirements modeling

Friday, June 8th, 2007

ARTiSAN Studio v6.1 supports SysML standard as well as range of safety-related process standards. Included SysML Requirements Profile brings textual requirements to UML by making use of Ergonomic Profiling capabilities to provide menus, diagrams, and browser for exploring systems requirements and traceability relationships. Software also supports OMG’s Model Driven Architecture with single-step process for transforming state machines into code.CHELTENHAM, England, July 20 — ARTiSAN Software Tools, a global leader for UML 2.0 and SysML-based real-time systems and software modeling tools, has announced that it has started shipping ARTiSAN Studio 6.1 which includes features and functionality in support of the new SysML standard. The shipping of ARTiSAN Studio 6.1 follows the announcement by The Object Management Group (OMG) that the SysML specification was formally adopted on July 6th, 2006.

SysML represents a subset of UML 2.0 with extensions to satisfy the needs of systems engineers. ARTiSAN Studio 6.1 provides support for requirements modeling, one of the principal extensions introduced by SysML, in an easy-to-use, out-of-the-box solution that supports a range of safety-related process standards such as DO178B for avionics software, IEC/DIN/EN 61508 for automotive and other safety-critical applications, CENELEC DIN/EN 50126, 50128, 50129 for railway transportation and DO254 for hardware. The new SysML Requirements Profile (RP) brings textual requirements to the UML world by making use of ARTiSAN Studio’s advanced Ergonomic Profiling capabilities to provide new menus, diagrams and a browser for exploring systems requirements and traceability relationships. It also supports a wide external tool chain allowing textual requirements to be displayed and traced inside the UML/SysML model and synchronization with requirements held in external tools such as DOORS, RequisitePro, Word, Excel and Access. ARTiSAN Studio 6.1 also supports the OMG’s concept of Model Driven Architecture (MDA) with a practical and usable solution that provides a fast, single-step process for transforming state machines into code. ARTiSAN’s Template Development Kit (TDK) provides ground breaking technology for configuring the model-to-code transformations to support in-house standards, key hardware/software constraints, target-ready code and reusable design patterns.

As further support for model simulation and animation, ARTiSAN Studio 6.1 also sees the roll-out of the integration of iSYSTEM’s emulation and debug technology to provide a contiguous solution for the on-target simulation of embedded applications modeled in UML.

Additionally, ARTiSAN Studio 6.1 introduces a new repository-based configuration management capability in support of model-driven, team-based software development. Aligned with the built-in change tracking facility, the internal versioning provides a significantly enhanced ability to efficiently baseline large models to support key review and audit processes. Also included is the ability to create private views of the repository.

As part of ARTiSAN’s UML 2 compliance strategy, ARTiSAN Studio 6.1 also delivers leading support for XML Metadata Interchange (XMI) 2.1 functionality. XMI enables the exchange of data between UML modeling tools and metadata repositories and is especially important for supporting third party add-ins built in Eclipse.

ARTiSAN Studio 6.1 incorporates a range of user-requested usability improvements to increase developer productivity. These include a powerful web-style navigation toolbar for navigating through the user interface and additional support for fine tuning diagrams to improve presentation and display. Also included are infrastructure enhancements to support tool roll-out on large-scale, mission-critical systems development including further support for Active Directory, Chinese Windows and emulation under Linux. Support for ARTiSAN Studio’s Rational Rose migration tool has also been improved, reinforcing its position as the tool of choice for Rose migration.

About ARTiSAN Software Tools

ARTiSAN Software Tools is the leading supplier of collaborative modeling tools for requirements analysis, specification, design and development of complex applications. The company provides standards-based, multi-user tool support from architectural frameworks through systems design to software implementation. ARTiSAN offers products, services and a process for systems and software modeling to accelerate the development of next-generation real- time systems while ensuring that they always meet requirements. ARTiSAN enables engineering teams to visualize, design and validate systems before building them, and simplifies implementation with code generation and software reuse. Winner of the 2005 SD Times 100 award in the Modeling category for bringing UML and SysML to real-time embedded systems, ARTiSAN offers the most advanced tools for complex applications development. Founded in March 1997, ARTiSAN is privately held with headquarters in Cheltenham, United Kingdom. The company has regional sales offices and distributors throughout the world.

Geometric modeling component program updated

Friday, June 8th, 2007

UGS Corp. has released Parasolid v18.0, the newest version of its geometric modeling component software. According to the company, the new release strengthens versatility and ease-of-use. It features improvements in application support functions and enhanced levels of user control over 3D model construction, editing and interrogation.

Upgrades include extensions to thickening, tapering and embossing operators designed for finer user control in local editing. The software also features automated reordering and repair to enhance blending and filleting in tightly curved regions, as well as improvements in data tracking, rollback efficiency and partition management.

Creation of a Computer Modeling Course for Undergraduate Earth Science Students

Friday, June 8th, 2007

Entire fields within the Earth sciences now exist in which computer modeling has become the primary work of the discipline. Undergraduate geology/Earth science programs have been slow to adapt to this change, and computer science offerings frequently do not meet geology students’ needs. To address these problems, a course in Computer Modeling in the Earth Sciences has been developed at Vassar College. The course uses the STELLA (Structural Thinking Experimental Learning Laboratory with Animation) iconographical box modeling software to teach the fundamentals of dynamical systems modeling and then builds on the knowledge students have gained with STELLA to teach introductory programming. Modeling topics include U-Pb concordia/ctiscordia dating techniques, the impact of climate change on a chain of lakes in eastern California, heat flow in permafrost, and flow of ice in glaciers by plastic deformation. The course has been received enthusiastically by students, who reported not only that they enjoyed learning the process of modeling, but also that they had a newfound appreciation for the role of mathematics in geology. Fully documented and debugged STELLA and Fortran models along with reading lists, answer keys, and course notes are available to anyone interested in teaching a course such as this.

Software delivers 3D modeling, animation, and rendering

Friday, June 8th, 2007

Maya 8 offers combination of 64-bit support, multi-threading, and algorithmic optimizations that enable artists to load massive datasets and efficiently interact with them. Key areas of software, including skinning, draw tessellation, and subdivided polygon proxy meshes, have been multi-threaded to scale with number of processors or cores available. Software supports HDR and floating-point images and offers interactive viewing of native and custom mental ray shaders.SAN RAFAEL, Calif., July 31 / — Autodesk, Inc. (NASDAQ:ADSK) today launched Autodesk Maya 8 software, the newest version of its Academy Award-winning 3D modeling, animation and rendering solution. Maya has been used by a variety of clients, including BMW, CNN, Disney, Epic Games, Industrial Light & Magic, Midway Games and Weta Digital, to create breathtaking 3D imagery for feature films, interactive games, broadcast graphics and industrial design. Autodesk Maya 8 meets the demands of next- generation productions by addressing the real-world production challenges 3D artists are currently facing. Maya 8 will be showcased at the Autodesk booth #1706 at SIGGRAPH 2006, August 1-3 at the Boston Convention Center.Marc Petit, Autodesk’s Media & Entertainment vice president, said, “3D artists are tackling some overwhelming challenges right now, such as dealing with huge, increasingly complex data sets while moving to next-generation game development platforms and having to deliver even more photo-realistic imagery. Teams are getting bigger and require sophisticated collaboration and data management tools. Autodesk Maya 8 addresses these production hurdles by combining a flexible platform with a highly optimized software core, boosting productivity and improving pipeline efficiency.”

Maya 8 offers a combination of 64-bit support, multithreading and algorithmic optimizations that enable artists to load massive datasets and interact with them more efficiently than ever before. Key areas of the software, including skinning, draw tessellation, and subdivided polygon proxy meshes, have been multi-threaded to scale with the number of processors or cores available, thereby accelerating formerly time-consuming tasks on today’s workstations and those of the future.

“Autodesk Maya 8 software’s 64-bit support has opened up a world of possibilities by allowing our artists to manage very large scenes,” said Jack Brooks, VP Technology, Walt Disney. “Maya 8 is an integral element of our 64- bit pipeline. We used the beta in pre-production for an upcoming film. Being able to extend Maya’s functionality through the API allowed us to customize it to meet our demanding requirements.”

Maya 8 offers a host of productivity advancements, particularly for modeling and texturing. The Transfer Polygon Attributes feature enables modelers to transfer UVs, color per vertex (CPV), and vertex position information between surface meshes of differing topologies. This is particularly useful when working with two different versions of an object or character, e.g. one that is high-resolution and one that is low-resolution. In addition, new and improved workflows and tools such as Polygon Bridge, multiple edge loop insertion and enhanced UV layout help maximize productivity for the most common tasks.

Maya 8 enables artists to better manage data when using multiple 2D and 3D packages within the production pipeline. This is achieved through application programming interface (API) extensions, enhancements to Autodesk FBX file exchange technology, the addition of interchangeable geometry caching between Maya and Autodesk 3ds Max animation software, and new interoperability with Autodesk Toxik collaborative compositing software.

Emmanuel Valdez, chief creative officer at High Moon Studios in California, said, “At High Moon Studios, we have artists from all types of disciplines — from animation to character modeling. They have to work together and share 3D data, regardless of the software they’re using. That’s why we’ve chosen to use Autodesk Maya, along with Autodesk 3ds Max and MotionBuilder. These products are open and offer the industry’s best creative tools.”

Autodesk helps 3D artists in game development, design visualization, film, television, broadcast and graphic design focus on realizing their ideas without being limited by production complexities. Autodesk’s media and entertainment 3D product portfolio is comprised of Autodesk Maya 8, 3ds Max 9 (announced separately) and VIZ 2007 animation, modeling and rendering software, as well as Autodesk MotionBuilder 7.5 character animation software. Interoperability is achieved between these products via Autodesk FBX, a free 3D file exchange format.

HYDROLOGIC MODELING OF A BIOINFILTRATION BEST MANAGEMENT PRACTICE

Friday, June 8th, 2007

The goal of this research was to develop a methodology for modeling a bioinfiltration best management practice (BMP) built in a dormitory area on the campus of Villanova University in Pennsylvania. The objectives were to quantify the behavior of the BMP through the different seasons and rainfall events; better understand the physical processes governing the system’s behavior; and develop design criteria. The BMP was constructed in 2001 by excavating within an existing traffic island, backfilling with a sand/soil mixture, and planting with salt tolerant grasses and shrubs native to the Atlantic shore. It receives runoff from the asphalt (0.26 hectare) and turf (0.27 hectare) surfaces of the watershed. Monitoring supported by the hydrologic model shows that the facility infiltrates a significant fraction of the annual precipitation, substantially reducing the delivery of nonpoint source pollution and erosive surges downstream. A hydrologic model was developed using HECHMS to represent the site and the BMP using Green-Ampt and kinematic wave methods. Instruments allow comparison of the modeled and measured water budget parameters. The model, incorporating seasonally variable parameters, predicts the volumes infiltrated and bypassed by the BMP, confirming the applicability of the selected methods for the analysis of bioinfiltration BMPs.The urbanization of a watershed, with the associated increase in impervious surface and intensity of use, changes the local hydrology and that of the downstream river system. Paved areas and roofs, as well as compacted turf areas, speed increased runoff volumes to the receiving channels with diminished opportunity for filtration of pollutants. Increased flows downstream cause more frequent flooding as well as accelerated stream channel erosion. Meanwhile, these pulses of excess runoff are not contributing to ground water recharge, leading to lower stream base flows and urban water supply problems during dry periods. Additionally, the pavement, buildings, and turf areas significantly reduce the opportunity for evapotranspiration and the environmental benefits it confers (Schueler, 1995; USEPA, 2002).

To compensate, many BMPs have been developed since the link between increasing impervious areas and watershed scale problems has been recognized. In the past, stormwater management techniques (especially detention basins) emphasized flood control without considering the corollary impacts of development on increasing pollution and decreasing ground water recharge. The long term effects of some of these attempts have now been studied and quantified (Emerson, 2000; Roesner and Nehrke, 2004). The accumulated experience has given rise to new solutions and new governmental regulations. For example, the Pennsylvania Comprehensive Stormwater Policy, announced in 2003, states that

“planners and applicants should evaluate and utilize infiltration BMPs to manage the net change in stormwater generated or otherwise replicate to the maximum extent possible preconstruction stormwater infiltration and runoff conditions so that post construction stormwater discharges do not degrade the physical, chemical, or biological characteristics of the receiving waters” (PaDEP, 2002).

As the above described movement in the state-ofthe-art of stormwater management becomes a part of planning requirements, of engineering practice, and of regulatory review, it becomes necessary to quantify the effects of infiltration BMPs. The designer must be able to demonstrate with confidence that a proposed BMP will behave in a predictable and beneficial way one that suits the needs of the developers, the architects and planners, the reviewing officials, the future residents, and those downstream. Current regulations and design guidelines are still being developed, and some resemble “rules of thumb” rather than specific and objective criteria.

The objectives of this modeling study are to contribute to the acceptance and successful application of bioinfiltration BMPs. By basing a modeling approach on the topography of the site, the geometry of the BMP, and the physical characteristics of the cover and soils, the capability for analyzing the BMP’s performance is established. By explicitly considering the physical properties of the site, the modeling approach provides a way to cross-check initial site observations or design assumptions with measurable performance and to make adjustments without resorting to the use of “correction factors” that may have no directly observable reference. And by explicitly considering the different temporal patterns of storms and the variability of the response of the watershed and the BMP over the course of the seasons, the modeling approach provides a more realistic way to develop descriptive statistics. A successful physically based model provides a logical way to move from general performance measures and site observations to the specifics for the design of a BMP.

Interleaving Modeling and Writing Activities in Systems Analysis and Design

Friday, June 8th, 2007

A Systems Analysis and Design course should develop both the technical as well as interpersonal skills of each student. Each student must be able to develop and use the various lifecycle models and be able to communicate with end users through these models. By creating interleaved modeling and writing assignments within the Systems Analysis and Design course both objectives can be met. This paper presents a series of integrated modeling and writing assignments-used in a Systems Analysis and Design course-that have been developed to enhance both the technical and interpersonal skills of an IS student.The Systems Analysis and Design course within Information Systems curriculum provides the student with the skills necessary to analyze and design information systems (Gorgone, Davis et al. 2003). One of the major objectives of this course is to have the student develop and use each of the models-either structured or OO-in the Systems Development Life Cycle (SDLC) (Hasan 2002). A second objective is to make each student aware of the interpersonal skills necessary for successful systems development (Guinan and Bostrom 1986; Gorgone, Davis et al. 2003). In particular, the Systems Analysis and Design course should emphasize “the factors for effective communication and integration with users” (Gorgone, Davis et al. 2003, pg. 29). In fact, the models developed in the SDLC are rendered useless unless “effective communication patterns are used by developers and users” (Guinan and Bostrom 1986, pg. 3).

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These two objectives-model development and interpersonal/communication skills-are met simultaneously through series of assignments developed for a Systems Analysis and Design course. In the course, the student is required-individually and then as part of a group-to develop a series of SDLC models and write a corresponding memo that explains the purpose, use, and their understanding of each model. This article describes how these assignments are used to meet these two learning objectives simultaneously.

2. SYSTEMS ANALYSIS AND DESIGN COURSE AND ASSIGNMENTS

In a typical Systems Analysis and Design course, topics range from planning to design and development activities, including the implementation of a database or other information system. However, this course is taught over a seven week period so only the activities within the planning, analysis, and design stages are addressed. The focus of the course is on the first objective-the development and use of the models in the structured approach-however, the course is regarded as a writing intensive course by the University; therefore a significant writing component must be incorporated into the course (Pomykalski 2005). Since this course, like nearly 75% of other Systems Analysis and Design courses, focuses on the structured approach, it should be useful to many instructors (Mahapatra, et al., 2005).

Each student is given a series of four models to develop throughout the course. The models are for economic feasibility (return on investment, breakeven analysis, and net present value), data modeling (an entity-relationship diagram), process modeling (a dataflow diagram), and database design (a database schema). As part of each modeling assignment, the student creates a two page memo that explains the purpose, use, and specifics of the corresponding model in their own words. These individual modeling and memo-writing assignments are done using a straightforward case adapted from a textbook (Satzinger, Jackson et al. 2004). Each assignment is then graded and returned to the student.

In order to assess the learning from the initial assignment, the same assignment, using a more complex case study (similar to ABC Church (Cappel 2001)), is completed by student groups; typically 2-3 students per group. Each student group develops the model, and writes a corresponding memo, for economic feasibility, data modeling, process modeling, and database design. In this way, concept learning is assessed.

2.1 Assignment 1: Economic Feasibility

The initial assignment on economic feasibility involvesgiven a set of annual costs and benefits for a seven year project-the calculation of the return on investment (ROI), net present value (NPV), and breakeven analysis (BEA). After performing the calculations, by mimicking a textbook spreadsheet model (Valacich, George et al. 2004), a memo, addressed to a “CEO-level” client about their findings for the economic feasibility analysis is created. Each student is given the following directions concerning the memo’s content.

Structural Modeling of Snow Flea Antifreeze Protein

Friday, June 8th, 2007

The glycine-rich antifreeze protein recently discovered in snow fleas exhibits strong freezing point depression activity without significantly changing the melting point of its solution (thermal hysteresis). BLAST searches did not detect any protein with significant similarity in current databases. Based on its circular dichroism spectrum, discontinuities in its tripeptide repeat pattern, and intramolecular disulfide bonding, a detailed theoretical model is proposed for the 6.5-kDa isoform. In the model, the 81-residue protein is organized into a bundle of six short polyproline type II helices connected (with one exception) by proline-containing turns. This structure forms two sheets of three parallel helices, oriented antiparallel to each other. The central helices are particularly rich in glycines that facilitate backbone carbonyl-amide hydrogen bonding to four neighboring helices. The modeled structure has similarities to polyglycine II proposed by Crick and Rich in 1955 and is a close match to the polyproline type II antiparallel sheet structure determined by Traub in 1969 for (Pro-Gly-Gly)^sub n^. Whereas the latter two structures are formed by intermolecular interactions, the snow flea antifreeze is stabilized by intramolecular interactions between the helices facilitated by the regularly spaced turns and disulfide bonds. Like several other antifreeze proteins, this modeled protein is amphipathic with a putative hydrophobia ice-binding face.

INTRODUCTION
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A newly discovered antifreeze protein (AFP) from the snow flea, Hypogastrura harveyi Folsom, is thought to help these primitive arthropods to survive freezing temperatures by inhibiting the growth of ice (1). At subzero temperatures, uncontrolled ice growth can lead to the dehydration or rupture of cells, loss of tissue functions, and, ultimately, the organism’s death. AFPs, also known as thermal hysteresis proteins (2), bind to a growing ice crystal surface (3) by an adsorption-inhibition mechanism (4) creating microcurvature of the ice front that makes it less favorable for water molecules to add to the crystal due to the Kelvin effect (5). In this way, AFP increases the energy requirement for ice growth and the resulting inhibition of growth prevents freezing damage. Although surface adsorption of AFPs to ice is generally accepted, the details of the antifreeze mechanism are uncertain. see the recent review by Prabhu and Sharp (6) for a discussion of some of the outstanding issues.

Two antifreeze isoforms were isolated from the snow flea, which differ in mass (15.7 kDa and 6.5 kDa) (1). Both of these proteins had potent thermal hysteresis activities of >2 C° at micromolar concentrations. They have very similar amino acid compositions. The short isoform (6.5 kDa) of snow flea AFP (sfAFP) contains 81 residues organized into a prominent repeat of Gly-x^sub 1^-x^sub 2^ where x^sub 1^ is often a glycine, and x^sub 2^ varies between a charged/hydrophilic residue and a small, hydrophobic residue (alanine/valine). This protein contains 37 glycines (45.7%) and the second most abundant residue is alanine (13.6%). The protein also contains four cysteines, which were found to form two disulfide bonds based on the mass difference after reduction and alkylation, although the bonding pattern is not known. Interestingly, the larger isoform has only two cysteines, and these are also disulfide bonded.

The amount of sfAFP that can be readily purified from natural sources is insufficient for conventional structure determination. It has proven difficult to collect even gram amounts of this organism (5-10,000 individuals/g) from which microgram quantities of AFP can be purified. Moreover, it is not easy to produce the AFP as a well-folded recombinant protein because of its unusual properties and thermal instability (data not shown). In the interim, we set out to model the protein structure ab initio.

METHODS

Model building

Progress toward the model was an intuitive, iterative process. It began with recognition of a tripeptide-repeating pattern throughout the protein that was highly suggestive of a threefold helical repeat. It continued with the identification of regularly spaced discontinuities in the repeat pattern that might correspond to bends or turns in the chains, splitting it into six roughly equal segments. Since the AFP is monomeric, a major constraint to be satisfied was the introduction of two intramolecular disulfide bonds. Lastly, an additional aspect of the tripeptide repeal, the irregular distribution of Gly-Gly, was taken into consideration.

A physical model was constructed using the HGS Biochemistry Molecular Model from Hinomoto Plastics (Tokyo, Japan).

Molecular dynamics

A virtual model was built using PyMOL 0.98 (7). The model was solvated in a 5.1 nm × 3.6 nm × 3.4 nm box of water containing 1776 waters and had a net single positive charge. To neutralize the charge of the system and to provide an effective concentration of 0.1M NaCl, nine molecules of water were replaced by 4 Na+ and 5 Cl- ions. The system was subjected to energy minimization by steepest descents, position restrained molecular dynamics to relax the solvent, followed by full molecular dynamics. All molecular mechanics calculations were done with GROMACS 3.3 (8). GROMACS uses a triclinic unit cell for its periodic boundary conditions. For calculating short-range nonbonded interactions, only the nearest image is considered (8). Long-range electrostatics is treated with the particle mesh Ewald method. The simulations were done under isothermal conditions using Berendsen temperature coupling. The GROMOS96 43al force field was chosen. The simulations were done independently at 4°C and 25°C using a timestep of 2 fs for a total duration of 10 ns at each temperature.

The Rise, Fall, And Rise Of The Gucci Handbag

Friday, April 6th, 2007

Not much garners more admiration and respect in the fashion world than designer handbags. What were once thought of as solely functional, have now been elevated to sophisticated and stylish fashion; those pieces that women with means will track down at all costs in order to have the latest and greatest in handbags in their collection. The Gucci line, especially, has long been respected for their Gucci handbag – among other luxury items – and continues to hold court in the fashion world as one of the most reputable companies of all times.

The Gucci handbag had its beginnings in Florence Italy in 1921, when Guccio Gucci opened his first store that specialized in leather products including handbags and saddles. By the late 1930s Gucci had opened a store in Rome and had become known for high quality and luxury items. The family business continued to blossom even after Guccio Gucci’s death in 1953; his sons continued the work their father had begun and before long there were Gucci stores in every major city including New York, London, Paris, and Hong Kong.

However, success was not enough to prevent the Gucci boys from fighting each other on design and business decisions and in the late 1970s the company hit hard times, almost resulting in the bankruptcy and the closing of doors. The company would not regain firm financial footing into well into the 1990s when it was bought out by a holding company.

With the purchase of the Gucci brand came a new designer, and the brand was well into a full-blown revitalization by the mid-nineties. The Gucci handbag had a comeback as well, becoming a favorite among celebrities.

The Gucci handbag is synonymous with luxury and continues to be on the wish list of many women far and wide. With a reputation for quality, style, creativity, and sophistication, Gucci will undoubtedly continue to be a name significant in the fashion world for many generations to come.

Vision After 40 - Sneaky Ways to Hide Those Reading Glasses

Friday, April 6th, 2007

So you have decided against wearing reading glasses. You have noticed your near vision declining for years, but you are dead set against perching granny glasses on the end of your nose. As far as you are concerned, aging is hard enough; you certainly do not want to make yourself look older before your time. Luckily, there are many alternatives to conventional reading glasses.

A magnifying lens is a convenient answer to reading up close. This little gem is the size and shape of a credit card, so you can tuck it in a pocket or wallet for easy access. At a moment’s notice, you will be reading away, without glasses.

Another great choice for making reading easier is the pendant magnifier. Wear it around your neck and make a statement. With a wide variety of styles and materials available (some trimmed with sparkly stones!), this is a beautiful, yet practical addition to your jewelry collection.

Lorgnettes are not just for the opera anymore. This choice affords you the ease and comfort of effortless reading, with the style and look of a trendy accessory. You can find frame in shiny metallics or bright plastics, mounted on handles or hung on chains.

As modern technology gets more advanced, some gadgets have gotten smaller. Cell phones, for instance, now weigh just a few ounces. With the benefit of a compact size comes the detriment of a harder-to-read display. Numbers and symbols are difficult to see on the tiny screens. Reading texts is next to impossible if you are presbyopic. But with a phone monocle, these problems are a thing of the past. This device fits over a phone display to magnify the data underneath. It fits both cell phones and cordless home phones, so if you are relaxing at home, you won’t need to guess who is on the other end of the phone. You can just glance through the phone monocle and know for sure.

With all the stylish, yet functional choices in magnifying eyewear, maybe you will think being presbyopic is not so bad after all.

Looking Great With Leather Motorcycle Jackets

Friday, April 6th, 2007

If you want a sporty look, you may want to look into purchasing leather motorcycle jackets. When it comes to style and a great look, nothing quite fits the bill like leather motorcycle jackets. When all is said and done, leather motorcycle jackets are a truly wonderful and completely versatile addition to any wardrobe. These are perfect additions for any man or women — even for younger people as well.

One of the best venues through which you can find the latest and greatest in leather motorcycle jackets are motorcycle shops. Many of the larger motorcycle shops in operation today include a clothing section in their showrooms. In short, these outlets have become one stop shops for all of your motorcycle needs, including leather motorcycle jackets. In most instances, these stores will stock the most recent designs when it comes to leather motorcycle jackets as well as vintage styles that have been popular for years and years.

As with so many things in this day and age, the Internet and World Wide Web is also a good resource for leather motorcycle jackets. There are some websites that cater specifically to the selling of leather motorcycle jackets. These sites offer a nice selection of leather motorcycle jackets. Of course you will want to make certain that you deal only with a reputable and reliable website that has an established reputation for good selling practices.

There are also leather motorcycle jackets that are available at auction sites and at overstock sites that are in operation on the Net today. At some times you can actually glom onto some good deals on leather motorcycle jackets at these websites with some degree of regularity. You will want to visit these sites from time to time as their inventories change with a great deal of regularity. By checking back from time to time you likely will find exactly what you are seeking when it comes to leather motorcycle jackets.

In this day and age, there are catalogue companies from which you can order the latest in leather motorcycle jackets. From the convenience of your home you can order the exact leather motorcycle jackets that you are looking for, that you want to add to your wardrobe.

One of the great things associated with leather motorcycle jackets is found in the fact that these jackets really are durable. They truly can be worn for nearly any occasion. In other word, leather motorcycle jackets aren’t just for motorcycle riding any longer.

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