Inventory (library)

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Inventory is one of the methods that libraries use to determine whether some items in their collection require conservation or conservation activities. Modern inventory may involve item-by-item checks with barcode scanners and laptops, with the aim of customizing bibliographies and item records in their OCC and WorldCat databases.

The library has thousands of books; large academic libraries may have millions of books; Performing an annual physical inventory (or less often) with the laying on of hands on each item may not be practical for several reasons. It may not be financially feasible, the required employee may not have the extra time to devote to such inventory, and there is no financial reward for the Library to complete the inventory. Found issues (books that require repurchase, rebinding, repair, or digitization) may require costly and labor-intensive solutions. Because of these barriers, inventories may not occur for decades, if ever, in large academic institutions. In contrast, full inventory is often a regular part of the work of school library media specialists at K-12 institutions, where inventory may be a legal requirement that indicates that libraries are responsible for the money they spend throughout the year. Checking out missing books and materials can also be compared with audits.

Video Inventory (library)

Peran inventaris

While collecting new material is seen as the library's primary mission, maintaining the condition of library collections, which include unsatisfactory activities such as weeding, repairing books, shifting and counting what libraries they think are on their shelves, is also a very important part. library mission to provide access to current customers, as well as those who will be using the library at some point in the future.

Inventory helps ensure that collections as listed in the Online public access catalog and Search for help are not lacking in integrity. The school library also uses inventory to assess collections (numbers, ages and ratios: students) on benchmarks of accrediting agencies, as well as to examine each resource and determine its future in collections based on age, relevance, currency and conditions - which may include improvements , replacement, disposal or cleaning to ensure that current and exciting resources are available to customers. Inventory can also identify anomalies in the catalog and provide an opportunity to improve catalog records and labeling of goods. This is also the time when racks can be rearranged to minimize overcrowding to prevent damage.

Maps Inventory (library)

Sampling

Sampling is a compromise measure, which can be an important management tool. Random sampling of library collections can provide a quick and clear measure of the collection's assessment - whether the book exists, and whether the books are in good physical condition. In 1982, the library of California State University, suggested inventory procedures to ensure that 19 campus collections are safe and intact. They acknowledged that the complete routine supplies were too expensive, and decided that the best method to assess book losses was to use sampling. Every three years, samples must be taken from the number of items identified in each classification letter of the Library Congress. If the loss rate is more than 1% for two consecutive years, this will indicate that a full inventory is required.

"Random sampling from a collection serves as an indicator for the rest of the collection If all items are recorded in random sampling, it can be assumed that the remainder of the collection record is equally reliable, but a full inventory provides the institution with the knowledge that the entire collection is accountable; check the consistency of collection notes. "

Specify sample size and item

First, it must be determined if the entire collection, including stacks, references and special collections will be sampled together or if only certain areas will be analyzed. At the University of Illinois, their bookstacks include government publications and Asian libraries, but this particular ownership is not included in their studies. Unrelated items can also be excluded.

Furthermore, the Library needs to decide on the sample size. More datapoints, of course, yield more accurate data about collections. There are two possible types of error in sampling: tolerance and confidence. Tolerance is an inexact percentage, the maximum deviation of the nominal error value, for example, the survey question may be accurate to 85-95% of the population, it can also be stated 90% Â± 5; in this case, the tolerance is five. Confidence is the second error, measuring the certainty of the correct answer within the limits stated in tolerance. If there is a 90 percent confidence, it is estimated that if the sample research was repeated ten times using different samples, but with the same tolerance, then the results would be accurate for nine of those studies out of ten.

In the table below, for a tolerance of Â± 5%, the sample size for the collection of over 50,000 books would be 381 items for 95% confidence, and 648 items for 99% confidence. To achieve a lower tolerance of Â± 1% people should sample thousands of books, which may span available resources even for sample inventory. Surveys of 270 to 655 volumes make much more sense for an average-sized library staff.

An alternative to counting hundreds of books in a particular random sample is counting until you know you are doing or not having a problem. The Prescott Memorial Library at Louisiana Tech used sequential analysis in the late 1980s while working on collection automation.

The random selection of books can occur in several different ways. If in addition to the physical condition of the goods, the library also wants to know whether the items are missing from the rack, random samples must be generated from the library of integrated library system (ILS). If librarians only access the collection for preservation purposes, they can easily calculate ranges, columns, shelves and books and use Microsoft Excel or other spreadsheet software to create random samples. It should be noted, however, that book placement errors on the shelves have associated costs - in protective satisfaction with library services and in staff time trying to locate missing books. It might be worth the extra time to figure out how to extract random items from your ILS library to complete your sample.

Management of the sampling survey

After the librarians put their hands on individual books in their samples, what are they looking for? They should check the book cover for discoloration, flaking, damage. Then they should open the book and look at the pages of the text - are they yellowed, fragile? Marking tags can be used to determine whether a book is acidic. How is it binding? Is the page intact? This data can be recorded in a spreadsheet for later analysis of all samples. Include call number, place of publication, place of production, date of publication, measurement (spine height, width of cover, depth of back to front cover, number of shelf space surrounding items, horizontally and vertically); describes case styles, leaf attachments and binding conditions, text attachments, acidity, paper strength, and text contrast; list of broken pages and explain the types and conditions of enclosures; record any additional notes that will be useful for future reference and analysis.

The cost for sampling 384 random items at the University of Illinois at Urbana-Champaign in 1987 was less than $ 5000. UIUC Library employs eleven graduate students from library and information science schools, who receive training and supervision. Each surveyor collected 40 samples, 90% of the survey completed on the first day in 5.5 hours survey.

Analysis of results

The information from the sample can be easily recorded in Excel or some other spreadsheet program, where a simple analysis can be performed. For conservation purposes, librarians want to know the condition of the collection: what percentage of the book is acidic? What percentage of the collections are broken? Does more damage occur on narrow shelves? Does the library need to pay attention to books printed in Eastern Europe? Etc. After identifying the issues of major concern in the collection, conservation actions should be considered. What needs to happen as soon as possible to preserve the collection? What options can be delayed for some time? Does the library have a conservation plan in its collection management policy? Is there a budget to maintain the collection? What can be extrapolated from the data about what might happen to the collection in ten to twenty years?

Using the results of the library collection assessment, the budget request can be proven by the data. Libraries need a budget increase for aging collection treatments, or libraries needing increased funding to add new materials to our students to meet our shortcomings and weaknesses. This strategy was employed by the Joyner Library at East Carolina University after the inventory and shelf-analysis project in 2005.

Other uses of sampling in library collection management

Sampling can also be used to calculate the optimal interval for rack readings. The average placement of books on the shelves at the university library is 5.6%. 65 percent of books are on the right shelf, but not in the right order. Cooper and Wolthausen developed an equation that shows that the optimal rack reading interval is a function of a number of books in a section, it is likely that a book in one section will migrate to another, check and cost users, and the reader rack error rate.

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References

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Inventory (library)

Selasa, 19 Juni 2018