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Search Tips

ETDE's Energy Database information can be found in a number of products. Each product has its own help feature for searching, and each product has certain features which may be beneficial to users. The purpose of this section is to provide potential users with an idea about some specific topic searches that are possible in several of the products which serve to illustrate some of these features. The three products included in the various examples are: ETDEWEB, File 103 on Dialog, and Energy on STN. Current users of the products may also benefit by learning from the specific tips mentioned. Searching tips are updated periodically to provide users with beneficial information in choosing the most appropriate query structures and products.

For specific help on searching ETDEWEB, Dialog, and STN using Boolean operators, wildcards, sorting, and other advanced search features, please see their individual Help sections. For ETDEWEB information, please see its Help section. The Bluesheet on File 103: Energy Science and Technology provides specific help regarding Dialog. For more information regarding STN, go to STN's information about the Energy file. The Energy file is also available through STN Easy and STN on the web.

The samples below address the following questions:

  1. How to find specific descriptors for special questions: the example of fermentation of agricultural wastes in biogas plants
  2. How to filter search results in order to focus on specific aspects: the example of socio-economic and political aspects in documents on the hydrogen society.
  3. How to find the main activity of a specific laboratory
  4. “Find a needle in the haystack” - How to take advantage of searching in the full text documents:
    1. The example of information about a specific project being found within a full text document.
    2. The example of information about a specific project when the project name has been changed and stated only within the full text document.

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1. How to find specific descriptors for special questions: the example of fermentation of agricultural wastes in biogas plants

ETDEWEB:

“Biogas plants” is not a descriptor in the ETDE/Energy database. We recommend starting with a search in the title field for “biogas plants.” Then, on ETDEWEB, review the first five or so bibliographic records returned to view the terms found in the subject field for each. In this example, a variety of terms are found in the subject lines that might be useful, including “biomass conversion plants,” “biomass fuels,” “biofuels,” and “biogas process.” These terms will aid the user in identifying appropriate terms or phrases to successfully search for the desired topic in the subject field and other fields.

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STN:

“Biogas plants” is not a descriptor in the ETDE/Energy database. Searching with descriptors helps in many cases to find quite accurate results but, more than this, compared to a search only in the title fields, it completes your results. If you don't know the correct terminology but want to search with controlled terms and not only in the title field, we recommend to start with a search in the title for “biogas plants” (to have an accurate search result), then you can select the controlled terms field (CT) and display the most frequently assigned descriptors. You can then see very quickly which terms are the most important controlled terms for your search question and afterwards search again, but this time in the title field and in the controlled terms. You can easily see that your search result contains lots of more relevant answers than before.

=> fil energy
=> s biogas plant#/ti
L1 536 BIOGAS PLANT#/TI
  ((BIOGAS(W)PLANT#)/TI)
=> s l1 and agricultural waste#
L2 235 L1 AND AGRICULTURAL WASTE#
=> sel l2 1- ct
E1 THROUGH E594 ASSIGNED
=> d sel e1-e20

 

E1 172 BIOMASS CONVERSION PLANTS/CT
E2 166 MANURES/CT
E3 121 METHANE/CT
E4 90 *METHANE/CT
E5 78 ANAEROBIC DIGESTION/CT
E6 58 *ANAEROBIC DIGESTION/CT
E7 55 *MANURES/CT
E8 51 BIOREACTORS/CT
E9 50 *PRODUCTION/CT
E10 41 BIOGAS PROCESS/CT
E11 41 GAS YIELDS/CT
E12 39 BIOMASS CONVERSION PLANTS/CT
E13 37 FARMS/CT
E14 36 *DESIGN/CT
E15 36 AGRICULTURAL WASTES/CT
E16 36 FERMENTATION/CT
E17 35 *BIOGAS PROCESS/CT
E18 30 BIOMASS/CT
E19 30 DESIGN/CT
E20 30 FERTILIZERS/CT


=> s (agricultural wastes or manures)/ct 
  5242 AGRICULTURAL WASTES/CT
  4046 MANURES/CT
L3 8538 (AGRICULTURAL WASTES OR MANURES)/CT
=> s biogas plant#/ti or biomass conversion plants/ct
  2794 BIOGAS/TI
  13 BIOGASES/TI
  2806 BIOGAS/TI
  ((BIOGAS OR BIOGASES)/TI)
  122877 PLANT#/TI
  536 BIOGAS PLANT#/TI
  ((BIOGAS(W)PLANT#)/TI)
  3263 BIOMASS CONVERSION PLANTS/CT
L4 3502 BIOGAS PLANT#/TI OR BIOMASS CONVERSION PLANTS/CT
=> s l3 and l4
L5 1003 L3 AND L4
=> s l5 and py>2002
  175548 PY>2002
L6 28 L5 AND PY>2002
=> d all


L6   ANSWER 1 OF 28 ENERGY COPYRIGHT 2005 USDOE/IEA-ETDE on STN
AN   2005(8):43592 ENERGY Full-text
T1   Evaluation of an agricultural biogas plant at Hagavik. Utvaerdering av gaardsbaserad biogasanlaeggning paa Hagavik.
AU   Edstroem, Mats; Nordberg, Aake; Ringmar, Anders
CS   Swedish Inst. of Agricultural and Environmental Engineering, Uppsala (Sweden)
NR   JTI-KA--31
SO   2005. 39 p. 23 refs., 21 figs., 12 tabs. Available from: http://www.jti.slu.se/publikat/rapporter/ka/RKA-31MEd.pdf; OSTI; Commercial reproduction prohibited; OSTI as DE20581973; PURL: https://www.osti.gov/servlets/purl/20581973-SMhqaT/webviewable/. ISSN: 1401-4955
DT   Report
CY   Sweden
LA   Swedish
FA   AB
AB   Hagavik is an organic farm (municipality of Malmoe in Sweden) and the grown crops at the farm are sugar-beet, wheat, tritricale and ley crop (for green manure). The farmer has erected a new farm scale biogas plant with a digester volume of 500 m3. The motives for building the plant were to produce biogas for cogeneration and digestate for supplying the farm with nutrients. Biogas substrates, harvested at the farm, are ley crop and sugar-beet tops and external substrates are solid manure from horses and organic waste from industrial bakery. Digestion of fibre-rich substrates as ley crop and straw-rich solid manure at farm scale plants is fairly untested in Sweden. The fibre has a rather big impact on the rheological properties of the substrate mixture and digester slurry and can cause problems with pumping and ineffective stirring. To achieve satisfactory function on the pumps and stirrers the fibre-rich substrates the rheological properties has to be improved. This can be done by 1) mixing the fibre-rich substrates with rather large quantities of liquids which can result in low dry mater content both in substrates an digester slurry 2) reduce the fibre size by mechanical disintegration. The Swedish Inst. of Agricultural and Environmental Engineering (JTI) has been in charge of the evaluation of the biogas plant. Evaluation of the start-up phase of the plant, regarding the technical and biological function, was accomplished in July-November 2003. During year 2004 focus has been on practical experience running the plant. The plant electricity demand has been measured. Based on those measurements the calculated electricity demand running the plant with a biogas production at 600 m3/d (3,54 MWh/d) corresponds to ca 2-3% of the energy content of the biogas. The calculated heat demand corresponds to 15 % of the biogas. At cogeneration (with assumed electrical efficiency of 34% and thermal efficiency of 55%) the net-energy production is 919 MWh/year where 44% will be electricity and the rest heat. Total investment for the plant is about 2,6 MSEK. The farmer has got a government investment subsidy of 0,6 MSEK. The price of the net-energy production has to be at least 0.40 SEK/kWh in order to balance the costs. This calculation includes the investment subsidy
CC   *S09 Biomass fuels
CT   METHANE; AGRICULTURAL WASTES; SUGAR BEETS; CROPS; COGENERATION; PERFORMANCE; ECONOMIC ANALYSIS; INVESTMENT; ANAEROBIC DIGESTION BT ALKANES; BEETS; BIOCONVERSION; DIGESTION; ECONOMICS; FOOD; HYDROCARBONS; MAGNOLIOPHYTA; MAGNOLIOPSIDA; ORGANIC COMPOUNDS; ORGANIC WASTES; PLANTS; POWER GENERATION; STEAM GENERATION; VEGETABLES; WASTES


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2. How to filter search results in order to focus on specific aspects: the example of socio-economic and political aspects in documents on the hydrogen society.

Dialog:

For broader searches, where only the main publications in a field are requested rather than all records, it can be useful to filter the results by use of the section categories, which represent the main topic of a publication. In the following example the descriptor “HYDROGEN-BASED ECONOMY” is chosen to express the concept of a “hydrogen society”. Some additional documents are retrieved by combining “hydrogen” expressed by the section code for the use of hydrogen as a fuel and to represent the socio-economic and political aspect, the section code used is SC 29 - ENERGY PLANNING, POLICY AND ECONOMY. The list of subject categories is available at http://www.etde.org/edb/cat&scope.pdf. It is advisable to use truncation for the section codes.

File 103:Energy SciTec 1974-2004/Dec B1
    c) 2004 Contains copyrighted material
*File 103: For access restrictions see Help Restrict.
--- ----- -----------
Set Items Description
S1 1041 HYDROGEN-BASED ECONOMY/DE (AUG 1976)
S2 331 (SC=08? OR HYDROGEN(W)PRODUCTION) AND ENERGY(W)POLIC?
S3 1294 S1 OR S2
S4 524 S3 AND SC=29?
S5 44 S4/2002-2004


STN:For broader searches, where only the main publications in a field are requested rather than all records, it can be useful to filter the results by use of the section categories, which represent the main topic of a publication. In the following example the descriptor “HYDROGEN-BASED ECONOMY” is chosen to express the concept of a “hydrogen society”. It is shown how the thesaurus can be browsed to see the hierarchy of a thesaurus term. Some additional documents are retrieved by combining “hydrogen” expressed by the section code for the use of hydrogen as a fuel and to represent the socio-economic and political aspect, the section code used is S29 - ENERGY PLANNING, POLICY AND ECONOMY. It has to be noted, that the subject classification scheme of the Energy database has been modified in the year 2000. If you search for the new classification code, STN will search automatically for the old codes too. The list of subject categories is available at http://www.etde.org/edb/cat&scope.pdf

=> fil energy 
=> e hydrogen-based/ct 


E# FREQUENCY AT TERM
-- --------------- -- -------
E1 2969 6 HYDROGEN TRANSFER/CT
E2 225 5 HYDROGEN TRITIDE/CT
E3 0 1 --> HYDROGEN-BASED/CT
E4 975 4 HYDROGEN-BASED ECONOMY/CT
E5 57 2 HYDROGENASE/CT
E6 381 6 HYDROGENASES/CT
E7 20036 10 HYDROGENATION/CT
E8 454 55 HYDROLASES/CT
E9 0 1 HYDROLIEUEFACTION/CT
E10 17499 15 HYDROLOGY/CT
E11 6282 12 HYDROLYSIS/CT
E12 0 1 HYDROMAGNETIC/CT

 

=> e e4+all

 

E1 975 --> HYDROGEN-BASED ECONOMY/CT
E2 71105 RT HYDROGEN/CT
E3 5422 RT HYDROGEN STORAGE/CT
E4 23544 RT INDUSTRY/CT
********** END **********

 

=> s e1
L1 975    “HYDROGEN-BASED ECONOMY”/CT
=> s (s08/cc or hydrogen(w)production) and energy(w)polic?
L2 348 (S08/CC OR HYDROGEN(W)PRODUCTION) AND ENERGY(W)POLIC?
=> s l1 or l2
L3 1244 L1 OR L2
=> s l3 and s29/cc
  23820 S29/CC
  214194 (29?)/CC
  238014 S29/CC
  (S29/CC OR (29?)/CC)
L4 530 L4 AND S29/CC
=> s l4 and py>2001
  277777 PY>2001
L5 53 L5 AND PY>2001

 

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3. How to find the main activity of a specific laboratory

DIALOG:

In order to get some idea about the main activity of a specific laboratory, you can start with the search of the laboratory name in the corporate source (CS)field. On DIALOG, this field is indexed word by word. This means significant components of a corporate name have to be linked with proximity operators when searching. Another result of this indexing mode is that this field is not available for ranking on Dialog.

The following example shows a search for the National Renewable Energy Laboratory of DOE in the United States. It is advisable to use only significant search terms. General ones, like “laboratory”, add little to the precision and bear the risk of non-retrieval because of possible abbreviations, like “lab.” for instance.

To get a quick overview of the main activities, one can proceed to a statistical analysis of the subject heading (SH) field. This field is easier to evaluate than the subject category code field. When using this field for searches, it has to be noted, that it is indexed in word mode as well as phrase mode. This means, it can be searched by elements linked with proximity operators (s sh=(energy(s)consumption)) or by the complete expression (s sh=advanced propulsion systems). It should be noted that the subject classification scheme of the Energy database was modified in the year 2000. It is recommended that users verify the new scheme located at http://www.etde.org/edb/reference.html. The main headings and main codes are valid for the whole database.

Another possibility is to look at the keywords and make a statistical analysis of the descriptor field (DE). Both procedures are shown in the following example, and both give about the same picture.

File 103:Energy SciTec 1974-2004/Dec B1
   (c) 2004 Contains copyrighted material
*File 103: For access restrictions see Help Restrict.

Set Items Description
---- ------- ----------------
S1 9632 CS=NREL OR CS=(NATIONAL(W)RENEWABLE(W)ENERGY)
S2 3476 S1/2000-2004
? rank sh s2/all cont
DIALOG RANK Results
--------------------
RANK: S2/1-3476 Field: SH= File(s): 103
(Rank fields found in 2984 records -- 126 unique terms)

RANK No. Items Term
------- ----- ----------
1 1403 ENERGY CONSERVATION, CONSUMPTION, & UTILIZATIO
2 970 SOLAR ENERGY
3 512 WIND ENERGY
4 415 MATERIALS SCIENCE
5 375 ENERGY PLANNING, POLICY & ECONOMY
6 329 BIOMASS FUELS
7 301 ENGINEERING
8 223 ENVIRONMENTAL SCIENCES
9 190 ADVANCED PROPULSION SYSTEMS
10 172 POWER TRANSMISSION & DISTRIBUTION
11 156 NATURAL GAS
12 129 SYNTHETIC FUELS
13 119 HYDROGEN
14 103 PETROLEUM
15 80 GEOTHERMAL ENERGY
16 66 ENERGY PLANNING & POLICY
17 52 PHOTOVOLTAIC CONVERSION
18 52 SOLAR ENERGY CONVERSION
19 44 ENERGY STORAGE
20 44 WIND ENERGY ENGINEERING

DIALOG RANK Results
--------------------
RANK: S2/1-3476 Field: /DE File(s): 103
(Rank fields found in 3458 records -- 6155 unique terms)

RANK No. Items Term
------- ----- ----------
1 573 ENERGY EFFICIENCY
2 559 SOLAR ENERGY - PHOTOVOLTAICS
3 532 PV
4 442 WIND ENERGY
5 433 BUILDINGS
6 324 INDUSTRY
7 301 NATIONAL RENEWABLE ENERGY LABORATORY
8 287 SOLAR ENERGY
9 273 PERFORMANCE
10 271 SOLAR CELLS
11 267 EFFICIENCY
12 261 RENEWABLE ENERGY SOURCES
13 252 WIND TURBINES
14 237 TRANSPORTATION
15 237 WIND POWER
16 236 PHOTOVOLTAICS
17 214 RENEWABLE ENERGY
18 203 DESIGN
19 196 INDUSTRIAL ENERGY EFFICIENCY
20 193 ELECTRICITY
21 169 ALTERNATIVE FUELS
22 153 MANUFACTURING
23 151 ENERGY SOURCES
24 148 EQUIPMENT
25 147 BIOMASS
26 142 WIND TURBINE
27 140 ENERGY CONSERVATION
28 139 THIN FILMS
29 133 BESTPRACTICES
30 132 NREL
31 132 TURBINES
32 126 TESTING
33 122 PRODUCTION
34 119 DISTRIBUTION ENERGY RESOURCES
35 119 PHOTOVOLTAIC CELLS
36 118 NATURAL GAS
37 118 SILICON
38 111 DISTRIBUTED GENERATION
39 110 ECONOMICS
40 104 HYDROGEN
41 103 COST
42 103 DISTRIBUTED POWER
43 103 SOLAR EQUIPMENT
44 101 US DOE
45 101 VEHICLES
46 97 OFFICE OF INDUSTRIAL TECHNOLOGIES
47 93 ENERGY ACCOUNTING
48 92 DOE
49 91 U.S. DEPARTMENT OF ENERGY
50 89 ENERGY EFFICIENCY AND RENEWABLE ENERGY
---end of results---


STN:

In order to get some idea about the main activity of a specific laboratory, you can start with the search of the laboratory name in the corporate source (CS) field. On STN, this field is string-indexed, that means that in many cases it would be a good idea to have a look at the index to see the way the institution is written. Often you will see that there are manifold ways to write the name and Institutes or laboratories of a company, so that truncation of the company name will help during searching. Be also aware of abbreviations of an institution name and search for both, the abbreviated form and the long version.

The following example shows a search for the National Renewable Energy Laboratory of DOE in the United States.

To get a quick overview of the main activities one can proceed to a statistical analysis of the classification code (CC) field. This field is easier to evaluate than the subject category code field. When using this field for searches, it has to be noted, that it is indexed in word mode as well as phrase mode. This means, it can be searched by elements linked with proximity operators (s energy(w)consumption/cc) or by the complete expression (s advanced propulsion systems/cc). It should be noted, that the subject classification scheme of the Energy database was modified in the year 2000. If you search for the new classification code, STN will search automatically for the old codes too. The classification scheme can be downloaded at http://www.etde.org/edb/reference.html.

Another possibility is to look at the keywords and make a statistical analysis of the descriptor field (DE). Both procedures are shown in the following example, and both give about the same picture.

=> e national renewable energy/cs
E1 1 NATIONAL RENEWABLE ENERGY LAB., GOLDEN, CO (UNITED STATES). NATIONAL WIND TECHNOLOGY CENTER/CS
E2 11 NATIONAL RENEWABLE ENERGY LABORATORY, GOLDEN, CO (UNITED STATES)/CS
E3 0 --> NATIONAL RENEWABLE ENERGY/CS
E4 1 NATIONAL RENEWABLE ENERGY LAB GOLDEN, CO (UNITED STATES)/CS
E5 1 NATIONAL RENEWABLE ENERGY LAB, 1617 COLE BOULEVAR, GOLDEN, COLORADO 80401 (UNITED STATES)/CS
E6 42 NATIONAL RENEWABLE ENERGY LAB, GOLDEN, CO (UNITED STATES)/CS
E7 1 NATIONAL RENEWABLE ENERGY LAB, GOLDEN, CO (UNITED STATES). WIND TECHNOLOGY DIVISION/CS
E8 3 NATIONAL RENEWABLE ENERGY LAB, GOLDEN, CO (US)/CS
E9 5 NATIONAL RENEWABLE ENERGY LAB. (NREL), GOLDEN, CO (UNITED STATES)/CS
E10 6 NATIONAL RENEWABLE ENERGY LAB. (UNITED STATES)/CS
E11 1 NATIONAL RENEWABLE ENERGY LAB. CENTER FOR BASIC SCIENCES, GOLDEN, CO (UNITED STATES)/CS
E12 1 NATIONAL RENEWABLE ENERGY LAB. GOLDEN, CO (UNITED STATES)/CS

 

=> s national renewable energy lab?/cs
L10 7893 NATIONAL RENEWABLE ENERGY LAB?/CS 
=> e nrel/cs


E1 1 NRED/TCD, UNITED NATIONS, NEW YORK, NY/CS
E2 1 NREK/CS
E3 293 --> NREL/CS
E4 1 NREL MURA INTERN FROM SOUTHERN UNIV., BATON ROUSE, LA (UNITED STATES)/CS
E5 1 NREL NATIONAL WIND TECHNOLOGY CENTER, GOLDEN, CO (UNITED STATES). APPLIED RESEARCH DIV./CS
E6 42 NREL PROJECT MANAGER/CS
E7 1 NREL PV PROGRAM, GOLDEN, CO (UNITED STATES)/CS
E8 1 NREL'S PV MARKETS AND APPLICATION TEAM, GOLDEN, CO (UNITED STATES)/CS
E9 1 NREL, (UNITED STATES)/CS
E10 1 NREL, 1617 COLE BLVD., GOLDEN (UNITED STATES)/CS
E11 1 NREL, 1617 COLE BLVD., GOLDEN, COLORADO (UNITED STATES)/CS
E12 2 NREL, 1617 COLE BLVD., GOLDEN, COLORADO 80401 (UNITED STATES)/CS

 

=> s nrel/cs
L11 293 NREL/CS
=> s l10 or l11
L12 7949 L10 OR L11
=> s l12 and py>1999
  500824 PY>1999
L13 2265 L12 AND PY>1999
=> sel l13 1- cc
  E1 THROUGH E29 ASSIGNED
=> d sel e1- 

 

E1 993 S32 ENERGY CONSERVATION, CONSUMPTION AND UTILIZATION/CC
E2 805 S14 SOLAR ENERGY/CC
E3 382 S17 WIND ENERGY/CC
E4 371 S29 ENERGY PLANNING, POLICY AND ECONOMY/CC
E5 342 S36 MATERIALS SCIENCE/CC
E6 220 S09 BIOMASS FUELS/CC
E7 200 S42 ENGINEERING/CC
E8 189 S33 ADVANCED PROPULSION SYSTEMS/CC
E9 153 S54 ENVIRONMENTAL SCIENCES/CC
E10 121 S03 NATURAL GAS/CC
E11 118 S24 POWER TRANSMISSION AND DISTRIBUTION/CC
E12 102 S08 HYDROGEN/CC
E13 94 S10 SYNTHETIC FUELS/CC
E14 68 S02 PETROLEUM/CC
E15 59 S15 GEOTHERMAL ENERGY/CC
E16 45 S25 ENERGY STORAGE/CC
E17 43 S30 DIRECT ENERGY CONVERSION/CC
E18 33 S99 GENERAL AND MISCELLANEOUS/CC
E19 29 S75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY/CC
E20 20 S37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY/CC
E21 16 S13 HYDRO ENERGY/CC
E22 16 S47 OTHER INSTRUMENTATION/CC
E23 9 S01 COAL, LIGNITE, AND PEAT/CC
E24 5 S20 FOSSIL-FUELED POWER PLANTS/CC
E25 5 S43 PARTICLE ACCELERATORS/CC
E26 4 S12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES/CC
E27 2 S11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS/CC
E28 2 S71 CLASSICAL AND QUANTUM MECHANICS, GENERAL, PHYSICS/CC
E29 1 S16 TIDAL AND WAVE POWER/CC

 

=> del sel
  DELETE ALL E# DEFINITIONS? (Y)/N:y
=> sel l13 1- ct
  E# OR SYSTEM LIMIT REACHED WHILE PROCESSING ANSWER 618
  E1 THROUGH E999 ASSIGNED
=> d sel e1-e25


E1 140 ENERGY EFFICIENCY/CT
E2 119 WIND POWER/CT
E3 111 PERFORMANCE/CT
E4 88 WIND TURBINES/CT
E5 76 SOLAR ENERGY/CT
E6 75 DESIGN/CT
E7 56 ELECTRICITY/CT
E8 53 NATIONAL RENEWABLE ENERGY LABORATORY/CT
E9 52 ECONOMICS/CT
E10 52 INDUSTRY/CT
E11 50 RENEWABLE ENERGY SOURCES/CT
E12 46 EFFICIENCY/CT
E13 44 PRODUCTION/CT
E14 43 SOLAR CELLS/CT
E15 42 EVALUATION/CT
E16 38 SYNTHETIC FUELS/CT
E17 38 TURBINES/CT
E18 37 BUILDINGS/CT
E19 34 MANUFACTURING/CT
E20 32 SILICON/CT
E21 31 BUSINESS/CT
E22 29 TESTING/CT
E23 27 BIOMASS/CT
E24 27 HYDROGEN/CT
E25 26 SILICON SOLAR CELLS/CT


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4. “Find a needle in the haystack”

4a. How to take advantage of searching in the full text documents: the example of information about a specific project being found within a full text document.

ETDEWEB

Suppose a user has limited information about a particular project, called the “PRUDENCE Project” that took place at the Swedish Meteorological and Hydrological Institute (SMHI). Perhaps the user wishes to find out more information about their study of simulations of climatic change.

The user may start searching for “climate change” and “simulation” in the bibliographic info field which returns over 700 results - too many results to wade through. A more refined search phrase of “PRUDENCE Project” in the bibliographic info returns no matches. If the user tries to just search for “prudence,” he gets 146 matches, all of which are not relevant. If the user searches for “PRUDENCE Project” in the full text, one record is returned that provides a full text document containing details found from the PRUDENCE Project. The user can open the full text PDF document and search it to find the occurrence of “PRUDENCE” within the report.

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4b. How to take advantage of searching in the full text documents: the example of information about a specific project when the project name has been changed and stated only within the full text document.

ETDEWEB

Suppose a user has limited information about a particular carbon sequestration project, once called the “Northern Rockies and Great Plains Partnership.” Perhaps the user wishes to find out more information about the project but is unaware that the project name has been changed to the “Big Sky Partnership.”

The user may start searching for the general subject of “carbon sequestration” in the bibliographic info which returns over 600 matches. A search for “Northern Rockies” and “sequestration” in the bibliographic info field reveals no results. The same search of the full text returns 4 results with the “Big Sky Partnership” appearing in the title. The user can open the full text PDF document of the first record and search it to find the occurrence of “Great Plains” within the report which retrieves a sentence in the introduction about the project name change.

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