Inventory Planning and Control

Inventory Planning and Control A Brief Overview of Inventory Planning and Control In any business, inventory is a key area of concern as inventoryis what is sold. Though, on the surface this may seem to be merely aphysical construct, inventory and inventory management principle easilyextend to service or other intangible product offerings. Perhaps the firstprinciple of inventory is that, inventory is money, or rather arepresentation of invested capital that is listed on the balance as aliability. While inventory is properly represented as a liability, a moreaccurate way to think of it is that is an asset in the waiting. Atypical retail store may have millions of dollars in inventory on the floor.If it is the right product, priced right, in the right place at the right time,it will likely sell. Though the 3-Ps just mentioned are the crux of themarketeers problem, they are also the problem of the inventory orreplenishment analyst on the store side and the problem of the manufacturingand shipping division of the supplier. Boththe vendor and the supplier seek inventory optimization, that is,managing from their perspective the same issues with which the marketeerwrestles. The daily issues of this perspective are focused on the same fourvariables with typical examples listed below: Product Is a certain SKU present in the regular modular only or checkout lane modular also? Are there multiple SKUs for a certain product (i.e., single or multi-packs)? A new SKU is being phased in to the modular set, is the are corresponding reduction in another product? Is replenishment on the old item turned off? If I have a certain product, is there a complimentary product that should also be sold, ideally with modular adjacencies? Placement Is a particular product in all stores (i.e., riding lawnmowers in NY City, snow shovels, even in January, in Mexico)? Does this product go into all stores simultaneously or should it be staged (i.e., lawn care product in southern stores first)? Are there any new stores that should be added to the shipped to list? Is a particular product a regular item or does it go on a special display/store location (i.e., holiday)? Price Are all the prices indicated on the shelf or on the product? Are the prices correct? Are prices updated annually or monthly? Is the item on deal (i.e., advertised special for which we might anticipate the standard 20% lift in velocity)? From theperspective of the vendor, a store or even a whole chain of store only has a[short-term] fixed floor area, backroom area and so many storage areas andtrucks that can be in transit to manage not simply one product at one locationbut the full range of products at all locations. This, in essence, is theproblem of inventory: managing and ideally optimizing the coming and going of allproducts at all locations. For the manufacturers, the problem is essentiallythe same, only with a different perspective: all of their products atall of the locations at which they are sold. The daily issues of this simply detail.Consider the perspectives of WalMart and 3M: one US retail operation and theone US division of one multinational manufacturer: WalMart has approximately 3,000 US stores, if there is one case of one product from 3M going to each store in the chain, this alone represents shipping 36,000 items (12 per case) just one time. Consider the number of products shipped, received and sold for all products at each store. 3M Stationary Products Division, Tape Adhesives section, has over 50 SKUs. Each peg on the display holds from 6 to 15 units of product. Each product comes in varying numbers per box, from 4 to 24, with from 1 to 6 boxes per case (the minimum order quantity). WalMart has the largest trucking fleet of any US corporation and has number distribution centers and warehouses. 3M has 1-2 factories per product and 3-4 key distribution points. Some items are warehouse items and therefore have a lead time of 3-4 days while other items have lead times of up to 21 days. The myriad issues that result from this collaborative efforts issignificantly enhanced but the good management of the inventory problem.From the number of units to build and subsequently ship (and to where) untilthe items are sold, the units exist as inventory. A Brief Discussionof EOQ and other Methods for Inventory Control To manage the issues discussed just prior is but one matter, tomanage them optimally is another and that is really the goal of anyinventory planning and control system. Realizing that any businessdecision is one in which the principle of the trade-off is employed, one canthen begin to methodically examine the variables. For example, in the simplestexample in which the costs of placing an order and the costs of carryinginventory are minimized. This optimal point is deemed the Economic OrderQuantity. While, in theory, the method works perfectly, its simplicity is alsowhat limits it in the real world in which additional variables and varyingassumptions run rampant. For example, EOQ does not, or, has trouble takinginto account the following variables/assumptions: Product cost assumptions such as fixed batch costs Product prices which may be variable and thus would change velocity and subsequent sales/demand forecasts Failure to adequately consider or cost out of stocks or backorders Failure to adequately consider lead times, special deals or seasonal items (Eason, 2003). Regardless, EOQ isthe starting place for the consideration or both additional variables as wellas the consideration of other models such as JIT, or the just-in-time methodin which the goal is -0- inventory. This is more applicable to a manufactureside though its principles do have applicability in retail. In this method,the basic assumption that has generally been borne out through research is thatinventory carrying costs are generally far higher than one might initiallythink (Schniederjans Cao, 2001). JIT is achieved by precisely the rightquantity of material/product to its destination just-in-time. Anothersomewhat similar method is ERP or enterprise resource programs. ERPleverages technology to provide firm-wide view of the materials at variousstages in the work process. This data is merged with other firm informationsuch as sales/demand forecast to create a optimized forecast for all rawmaterials, parts and finished products at any point in time. Insummary, whether using EOQ, JIT, ERP or any other combination of letters forinventory optimization, the key is to understand and purposefully manipulatethe variables of business to prioritize and manage the inherent trade-offs ofany business function. Works Consulted Bean, J. (2005), former 3M BusinessAnalyst, Interview on May 21, 2005. [Mr. Bean had significant work inmaintaining in stock levels to between 98.5-99.5% on Stationary and Tapeproducts] Eason, J. (2003, May). Setting TargetInventory Levels for New Products [Masters Degree Thesis, University ofArkansas, Fayetteville, Arkansas, US]. Piasecki, D. (2001, January). OptimizingEconomic Order Quantity. IIE Solutions. pp. 30-39. Schniederjans, M. Q. Cao. (2001). Analternative analysis of inventory costs of JIT and EOQ purchasing. InternationalJournal of Physical Distribution Logistics, (31), 2, pp. 190-117.

Types Of Food And Water Contamination Environmental Sciences Essay

About every individual twenty-four hours our universe additions a vegetarian. Most people become a vegetarian out of regard for our animate beings, some because merely dont like meat. First of all, biological meat is better for the environment. The animate beings at biological farms have a better life ; they can travel about freely, acquire outside and eat proper nutrient. Furthermore, biological farms do non utilize fertilisers, chemical supplies or cistron engineering, so the meat you are purchasing is really better for your ain wellness. You can acquire biological meat at whole nutrient and wellness nutrient shops, some farm stores, and biological meatmans and even the better supermarkets. The environment section of the Dutch authorities is back uping supermarkets to acquire biological nutrient and to put up a good run, because biological nutrient is still more expensive in the universe. The taint of nutrient by chemical jeopardies is a world-wide public wellness concern and is a taking cause of trade jobs internationally. Contamination may happen through environmental pollution of the air, H2O and dirt, such as the instance with toxic metals, PCBs and dioxins, or through the knowing usage of assorted chemicals, such as pesticides, carnal drugs and other agrochemicals. Physically taint occurs when objects that get into the nutrient point and this can class taint. 1.1.1 TYPE OF CONTAMINATED BY BIOLOGICAL Food can be contaminated by biological because there are two types of biological agents are pathogens and toxins. Sanitation in fixing and functioning nutrient will cut down taint by pathogens. Toxins are toxicant substances produced by pathogens and other organisation to protect nutrient from toxins, stored it in sealed, air-tight containers so to avoid the taint we must decontaminate the containers before opening them. In handling the job of biological it is assumed that there could be contaminated by personal of all open surfaces, and of go arounding air. The illness could be caused by taint that had occurred several yearss, or hebdomad earlier. In instance of biological onslaught there are certain direction that should for carried out for protection and decontamination of feeding, imbibing, nutrient service equipment and messing countries. The best manner to forestall biological taint is to make good sanitary and hygienic pattern. 1.1.2 TYPE OF CONTAMINATED BY CHEMICALLY Chemical nutrient taint refers to the presence in nutrient harmful chemicals and micro-organism which can do consumer unwellness. The chemical taint of nutrient as microbiological taint is under the nutrient borne unwellness. Largely the chemical taint is modified nutrient, or the nutrient ingredients from genetically modified being besides can organize the nutrient taint. The nutrient borne unwellness can caused by certain cleansing compounds, and sometimes by usage the improper containers ( pots ) for cooking or hive awaying nutrient. Sometimes drug besides are used in agribusiness chemicals to command the infestation of fruit and veggie. When a big sum of chemicals are used it can caused a serious nutrient borne unwellness. The full toxicant chemical and cleaning compound must be carefully stored and labeled and shop in country that separate from the nutrient point. The best manner to forestall chemical nutrient borne unwellness are all the fruit and vegetable must be rinse decent ly so that the chemical will destruct in the H2O. We can even utilize warm H2O or even a hot H2O to rinse it. Examples of toxic metal that can do chemical taint are: Lead: found in pewter, illustration is pitcher and tableware Copper: found in cooking utensil, illustrations are pots and Pons Zinc: found galvanized points, illustrations are pail and bath 1.1.3 TYPE OF CONTAMINATED BY PHYSICALLY There is few type of physical taint that occurs. The first is from human existences. Sometimes the point that can do physical taint are, hair, soil, hurting french friess, buttons, coins, jewelry makers, plaster, and finger nail, go mix with the nutrient. The 2nd is from equipment in the hotel. The equipment that can contamination because from the, glass, metal, wood, plastic, prison guard, nuts, and bolts. The 3rd are largely from nutrient point are delivered in some sort of packaging or containers. If the packaging is damaged, or non to the full removed it may go a beginning of physical taint. Example the point are, polythene, paper, composition board, plastic or even glass. The 4th type of taint are from the unwanted parts of natural ingredients that remain in nutrient after readying including illustration, egg shell, castanetss, pips, chaffs, dirt or grit. The last physical taint are from the spread disease, they besides can do physical taint because the contaminated from the, de ad insect organic structures, larvae or eggs, dungs of pelt or a bird plume. To avoid the taint we must manage the nutrient point with carefully. 1.2 DEFINATION OF PORTABLE WATER ( The above beginnings from www.portable water.com ) Portable H2O is a safe H2O to be drink by all human existences or besides animate beings. Water may be of course drinkable, as is the instance with pristine springs, or it may necessitate to be treated in order to be safe. In either case, the safety of H2O is assessed with trials which look for potentially harmful contaminations. Largely portable H2O is packaged in plastic, or glass. It is a merely H2O that s safe to be drink by all. Water which is contaminated can treated to turn into portable H2O. Once of the easiest W P treat the H2O is boiling. Boiling H2O may non take heavy taints, but it can neutralize most bacteriums and viruses which may show H2O can besides treated with chemicals such as bleach, which sometimes it signifier of tablets for field and encampment usage. In extra, H2O can be pumped through a filter to take particulate. 1.3 PORTABLE WATER USED FOR: 1.3.1 PORTABLE WATER STORAGE TANKS ( The above beginnings from www.portable H2O tanks.com ) Portable H2O storage armored combat vehicles can be used in a figure of applications. If there is a break in the lasting H2O supply a portable armored combat vehicle can be used as a impermanent solution. They can be used as firefighting equipment, typically in distant locations or for forest fires. They can besides be used in distant locations where a work cantonment needs to be set up for a period of clip. There are many different utilizations for them and they can be an effectual piece of equipment 1.3.2 WATER PURIFIER ( The above beginnings from www.water purifier.com ) Most H2O we would believe of as clean contains a assortment of different contaminations, including chemical and biological contaminations. Chemical contaminations are chemicals that have entered the H2O. We can kill biological contaminations in the H2O by boiling it, but unluckily, boiling H2O has no consequence on chemicals already in the H2O. However, utilizing a H2O purifier can take both biological and chemical contaminations at the same clip, ensuing in H2O that is clean and safe to be drink by household. 1.3.3 PORTABLE WATER BOTTLE ( The above beginnings from www.portable H2O bottle.com ) The portable H2O bottles are a new sort of filtered H2O bottle. If you one to make at out of place we can merely used the portable H2O bottle. With this filtered H2O bottle you can merely even travel anyplace without any job. The portable H2O bottle, it can cut down 99.99 % of contaminations such as cryptosporidium, Giardia, E-coli, and many more. The bottle is design for going, exerting, athleticss events, and catastrophes or even can be used at place. The H2O bottle is really save and the H2O besides is safe to be drink. 1.3.4 PORTABLE WATER HEATER: ( The above beginnings from www.portable H2O heater.com ) Water warming is a thermodynamic temperature procedure utilizing a warming beginning to heat H2O above its initial temperature. Portable H2O is normally heated by device known as a H2O warmer or hot H2O system. Water warmer for non portable usage, both industrial and domestic are besides called hot H2O boilers. When a shell and tubing heat money changer is used for portable H2O or non portable H2O warming, it is normally called a hot H2O generator.

How Was Spinosaurus Discovered

If you were to direct a movie about the fossil history of the giant dinosaur  Spinosaurus, the first scene would be set in the flaming Egyptian desert, during the golden age of European colonialism, In 1912--two years before the outbreak of World War I--industrialized nations like Germany thought nothing of sending their diplomats and scientists to far-flung places, from whence they obtained (some would say stole) cultural and historical treasures. On an expedition to the Bahariya Formation of western Egypt, a fossil-hunter named Richard Markgraf discovered the partial remains of an enormous meat-eating theropod, including bizarre-looking structures called neural spines that jutted out from this dinosaurs vertebrae. Markgraf shipped the bones back to Germany, where the venerable paleontologist Ernst Stromer von Reichenbach assigned them the new genus and species Spinosaurus aegypticus (aka the Egyptian Spine Lizard.) Enter the Moroccan Spine Lizard Its not true, as many people believe, that Spinosaurus was reconstructed solely on the basis of Markgrafs discovery. Over the next couple of decades, von Reichenbach found himself in receipt of additional Spinosaurus-like fossils from elsewhere in northern Africa, though none of them were as impressive as the Bahariya type fossil. They did, however, impel von Reichenbach to erect a new species, Spinosaurus maroccanus (Moroccan Spine Lizard), which differed in slight respects from its Egyptian counterpart. Even given the fate of the Spinosaurus aegypticus specimen, the validity of S. maroccanus is on shaky footing. Today, most paleontologists believe that these fossils should properly be assigned to the closely related spinosaur genus Carcharodontosaurus (Great White Shark Lizard) or the much more obscure, and even harder to pronounce, Sigilmassasaurus. Dale Russell--famous for his speculations about what might have become of Troodon if not for the K/T extinction--continues to believe in the validity of S. maroccanus, though hes in the distinct minority among his peers. Spinosaurus aegypticus, Casualty of War The original fossils on which von Reichenbach constructed Spinosaurus aegypticus were deposited after World War I in the Bavarian State Collection of Paleontology, in Munich--and were destroyed in a British bombing raid on that city on April 24 and 25, 1944. (This was rather late in the war, after Germany had, to all intents and purposes, already been defeated.) Fortunately, like any good paleontologist, von Reichenbach left detailed drawings of the specimens and at least two photographs, so in a sense the type fossil remains available for analysis. What actual fossils of Spinosaurus are still extant? Heres a brief list of the best-attested fragments: The Canadian Museum of Nature has a seven-inch-long vertebra, complete with neural arch, that was indispensable in the naming of S. Maroccanus. The Museum National dHistoire Naturelle, in Paris, is in possession of a five-inch-long Spinosaurus snout fragment discovered in Algeria. The Museo di Storia Naturale di Milano, in Italy, has an unusually large (almost 40 inch) snout fragment, eight times as long as the Paris specimen above. The Office National des Mines, in Tunisia, is where youll find an even smaller dental and jaw fragment discovered in that country. Closer to home, the paleontological collection of the University of Chicago contains two Spinosaurus nasal bones joined by a fluted crest, measuring about seven inches long. Why Did Spinosaurus Have a Sail? Given all this talk of type fossils, fragments of snouts and fluted crests, its easy to lose sight of Spinosaurus most notable feature: the long neural spines jutting out from the top of its  vertebrae. Initially, Ernst Stromer von Reichenbach interpreted these as having supported a big lump of fat, much like the hump of a modern camel. (At least one dinosaur, Ouranosaurus, is believed to have sported this feature, which presumably would have enabled it to survive in arid climates). In recent years, though, the weight of opinion is that the neural spines of Spinosaurus supported a thin sail along this dinosaurs back, rather than a thick hump. That said, the purpose of this sail remains a mystery; it may have been a sexually selected characteristic (that is, males of the genus with bigger, more prominent sails had more success mating with females), or they may have been evolved to help Spinosaurus regulate its temperature. Want to know more? See this in-depth article, Why Did Spinosaurus Have a Sail?

Validez en EE.UU. de matrimonio celebrado en otro país

Estados Unidos reconoce como và ¡lidos los matrimonios celebrados en otros paà ­ses siempre y cuando cumplan todos los requisitos exigidos por la ley que aplica en el lugar de la boda. Esto aplica tanto a matrimonios entre una mujer y un varà ³n como a la unià ³n entre dos personas del mismo sexo. Como consecuencia de este reconocimiento de la validez del matrimonio celebrado fuera de EE.UU. se derivan dos efectos. En primer lugar, si una persona que se casà ³ en otro paà ­s desea contraer un nuevo matrimonio deberà ¡ ser viuda, anular su divorcio o proceder a divorciarse, lo cual puede hacer aà ºn cuando no tenga nacionalidad estadounidense y matrimonio se hubiera celebrado en otro paà ­s. En segundo lugar, por matrimonio como ciudadano estadounidense o residente permanente legal es posible emigrar a los Estados Unidos sacando una tarjeta de residencia conocida como green card si cumple con todos los requisitos que exige la ley migratoria. Puntos clave: validez en EE.UU. de matrimonio celebrado en otro paà ­s Si el matrimonio es và ¡lido segà ºn la ley del paà ­s en el que se celebra, es và ¡lido en EE.UU.Los oficiales consulares de EE.UU. no celebran matrimonios.El matrimonio con ciudadano o residente, por sà ­ mismo, no da derecho a emigrar a EE.UU.Para emigrar a EE.UU. por matrimonio, el ciudadano o residente debe pedir a su cà ³nyuge Respeto por las leyes locales que regulan el matrimonio Para que Inmigracià ³n de Estados Unidos reconozca como và ¡lido a un matrimonio celebrado en el extranjero, à ©ste debe ajustarse a la ley local del lugar en el que la pareja se casà ³. Hay que tener en cuenta que en algunos paà ­ses se exige a los dos novios tener la residencia allà ­ para poder casarse. Ademà ¡s, si uno de los contrayentes es menor de edad se va a pedir algà ºn tipo de autorizacià ³n de los padres o tutores. Incluso en algunos paà ­ses se exigen determinados anà ¡lisis de sangre, requisito que hay que cumplir si es que asà ­ se pide legalmente. Ya que para que EE.UU. reconozca como matrimonio và ¡lido que cumpla con las leyes locales, en el caso de parejas gays es imprescindible celebrar la boda en un estado o en un paà ­s donde es legal. Si no se hace asà ­, no tendrà ¡ efectos migratorios. En otras palabras, el ciudadano o residente no podrà ¡ pedir los papeles para su cà ³nyuge, porque EE.UU. considera que no està ¡n casados legalmente. Problemas del matrimonio por poderes para Inmigracià ³n Si la intencià ³n es pedir la tarjeta de residencia permanente para el cà ³nyuge extranjero, se recomienda no casarse por poderes. Las leyes migratorias de EE.UU. exigen que el matrimonio se consume antes de aprobar cualquier peticià ³n por esta causa. Los matrimonios por poderes pueden crear la sospecha de que matrimonio no se ha consumado o que se trata de un matrimonio de conveniencia para sacar los papeles. Documentos  para casarse fuera de EE.UU. El ciudadano estadounidense que se casa en el extranjero deberà ¡ probar quià ©n es mediante  una identificacià ³n con foto, generalmente el pasaporte americano vigente. Ademà ¡s es normal que se pida documentacià ³n adicional, como copia de la partida o certificado de nacimiento. Si el contrayente ha estado casado previamente  deberà ¡ presentar la sentencia del divorcio o la nulidad o el certificado de viudedad. Hay que tener en cuenta que posiblemente se pida que estos documentos sean traducidos al idioma del paà ­s en el que tendrà ¡ lugar la ceremonia. Por otra parte una vez celebrado el matrimonio fuera de los Estados Unidos serà ¡ necesario traducir al inglà ©s el certificado de matrimonio para su uso migratorio. La  traduccià ³n puede hacerla cualquier persona con un conocimiento fluido del inglà ©s y del otro idioma y se necesita certificar la traduccià ³n, lo cual puede hacerse siguiendo un modelo de carta. Autentificacià ³n de documentos de matrimonios celebrados en el extranjero Dependiendo del uso que se quiera dar dentro de Estados Unidos al certificado de matrimonio de celebrado en otro paà ­s es posible que se necesite una autentificacià ³n, que puede ser de dos tipos. En primer lugar, un sello que se conoce como  apostilla de la Haya. La mayorà ­a de los paà ­ses de habla hispana forman parte del Convenio de la Haya y ese sello es el que se necesita para legalizar el certificado de matrimonio que se desea utilizar en Estados Unidos. En segundo lugar, para los paà ­ses que no forman parte de este convenio serà ¡ necesario obtener una certificacià ³n de legalidad. Cabe destacar que, para trà ¡mites con el Servicio de Inmigracià ³n y Ciudadanà ­a (USCIS, por sus siglas en inglà ©s), por regla general es suficiente una traduccià ³n certificada y no se exige la apostilla de la Haya.  ¿Bodas en embajadas y consulados  de EE.UU.? Ni los cà ³nsules ni ningà ºn oficial de las oficinas diplomà ¡ticas de los Estados Unidos està ¡ autorizado para celebrar bodas en el extranjero. Por ello, sà ³lo en casos muy excepcionales es posible que un matrimonio tenga lugar en el edificio de una embajada o un consulado. Sin embargo, en algunos casos los consulados sà ­ que prestan un servicio necesario cuando algunos paà ­ses se exige por parte del contrayente extranjero una declaracià ³n jurada de que tiene la capacidad legal para contraer matrimonio. Este tipo de declaraciones se pueden prestar ante un oficial consular americano que tienen poder para actuar como notarios pà ºblicos en el extranjero. Traer al cà ³nyuge extranjero a vivir a Estados Unidos El matrimonio con un ciudadano americano o residente, por sà ­ solo, no da derecho a viajar a Estados Unidos ni a permanecer en el paà ­s para a vivir y trabajar. Si la intencià ³n del nuevo matrimonio es vivir en EE.UU, el cà ³nyuge estadounidense o el residente permanente debe pedir una tarjeta de residencia por matrimonio para su esposo o mujer y tambià ©n para los hijastros, si se cumplen condiciones estrictas de edad. Ademà ¡s, los ciudadanos estadounidenses –pero no los residentes– tienen la opcià ³n de solicitar una visa K-3  para su cà ³nyuge y una K-4 hijos o hijastros en vez de seguir el proceso ordinario de peticià ³n de cà ³nyuge. En realidad estas son unas visas muy poco utilizadas y solo son convenientes cuando los plazos de tramitacià ³n de la peticià ³n ordinaria de la green card para cà ³nyuge de ciudadano son muy largos. En estos casos siempre es mejor estar aconsejado por un abogado migratorio. En los casos de cà ³nyuge extranjero fuera de EE.UU. y ciudadano o residente en los EE.UU. existe la tentacià ³n de que en vez de iniciar un proceso de peticià ³n de la green card el cà ³nyuge extranjero ingrese como turista a los Estados Unidos y luego solicitar un ajuste de estatus para obtener la green card. Esa opcià ³n no es la correcta desde el punto de vista migratorio y puede dar lugar a que no se le permita el ingreso al paà ­s y se le expulse en el puesto de control migratorio o, si consigue ingresar, no se le apruebe la peticià ³n de green card. Esto es asà ­ porque se puede considerar que ingresà ³ al paà ­s en fraude de ley al utilizar un estatus de turista cuando su intencià ³n era ingresar a EE.UU. para quedarse. En estos casos la intencià ³n es fundamental y es recomendable aconsejarse con un abogado para evitar problemas con el USCIS cuando se presente la solicitud de la green card. Finalmente, cabe destacar que en los casos en los que el  ciudadano  que desea traer a vivir a Estados Unidos a su esposo extranjero puede tener problemas muy particulares si el estadounidense siempre o en los à ºltimos aà ±os ha residido fuera de los Estados Unidos. El problema es que podrà ­a ser difà ­cil probar medios econà ³micos suficientes para patrocinar, tal y como lo pide la ley. Ademà ¡s, para pedir los papeles se exige que el patrocinador resida o tenga como residencia principal los EE.UU. Condicionalidad de la green card En muchos casos, la green card que se obtiene por matrimonio con un ciudadano es condicional por dos aà ±os. Es lo que se conoce como CR-1. En estos casos se exige activamente levantar la condicionalidad.  Esto ocurre cuando la residencia se otorga antes de que la pareja lleve dos aà ±os de casados. Por el contrario, si el cà ³nyuge extranjero de un ciudadano obtiene su tarjeta de residencia despuà ©s de haber cumplido el segundo aniversario de casado su visa de inmigrante es una IR-1 y es definitiva, es decir, no necesita levantar ninguna condicionalidad. Matrimonios de conveniencia Las autoridades migratorias son conscientes de que a veces los matrimonios son una farsa y su à ºnico objetivo es obtener la green card. Cuando se llega a esa conclusià ³n puede haber consecuencias serias. Ademà ¡s, durante la tramitacià ³n de los papeles puede suceder que se lleven a cabo investigaciones para intentar determinar si el matrimonio es real y siempre existe el riesgo de una denuncia anà ³nima sobre la finalidad del matrimonio. Test de respuestas mà ºltiples Para entender la green card, cà ³mo obtenerla, obligaciones, derechos, cà ³mo conservarla y cà ³mo es posible perderla por cancelacià ³n es importante tener los conocimientos bà ¡sicos.   Este test de respuestas mà ºltiples es muy aconsejable ya que el conocimiento evita meterse en problemas de los que luego es difà ­cil salir. Este es un artà ­culo informativo. No es asesorà ­a legal.