Consistency, consistency allows user to transfer existing knowledge to
new tasks, learn new things more quickly, and focus more attention on tasks. This is because they do not have to spend time to trying to
remember the differences in interaction. By providing a sense of stability, consistency makes the interface familiar and predictable.
Forgiveness, users like to explore an interface and often learn by trial
and error. An effective interface allows for interactive discovery. It provides only sets of choices and warns users about potential situations
where they could damage the system or data, or better, makes actions reversible or recoverable.
Aesthetics, visual design is important part of an applications interface.
Visual attributes provide valuable impressions and communicate important cues to the interactive behavior of particular objects. At the
same time, it is important to remember that every visual element that appears on the screen potentially competes for the user’s attention.
Simplicity, an interface should be simple not simplistic, easy to
learn, and easy to use. It most also provide access to all functionality of an application. Maximizing functionality and maintaining simplicity
work against each other in the interface.
4.2. System Implementation
4.2.1. DSS Tool Application
DSS Tool Application of Rehabilitation Bond System consists of two major applications, which are database implementation as the engine of mining
rehabilitation database and Information System application as DSS Tools analysis. The result of system implementation will be described through step of system
development and depend on the user need. Briefly, front-end visualization of this system is ‘user login’ form, which
can distinguish specific users who has accessibility for storing and maintaining
data as shown on Figure 4.4. Rehabilitation Bond application has two main users
which are administrator who has full accessibility and applicant who can only store data and each of user is equipped with personal password for security
reason. 43
Figure 4.4 Rehabilitation Bond ‘user login’ application
Figure 4.5 Rehabilitation Bond ‘main form’ application ‘Main form’ of the application Figure 4.5 consists of several buttons for
non-spatial data processing and map layer orientation for spatial data occurrence. Map layer orientation in ‘flash on’ automatically loads several spatial data or
thematic map, which are administrative province and sub district map, mine 44
company site map, road map, and river map with geographic navigation toolbar. ‘Main form’ also has several buttons to perform mine reclamation activity data
such as calculate reclamation cost button, total reclamation cost recapitulation button, reclamation bond comparison button, reclamation cost recapitulation
button, financial compulsory button, material handling recapitulation button, equipment cost module button, and labor cost module button.
As shown in Figure 4.6, reclamation data of mined area will be inputted
by using ‘calculate reclamation cost’ form which consists of as mine facilities removal cost data, material handling cost data, other direct reclamation cost data,
revegetation cost data, indirect cost data, and input actual reclamation cost data. .
Calculate Reclamation Cost
Form tampilan
Figure 4.6 Rehabilitation Bond ‘main form’ application
‘Mine facilities removal cost’ form is used to input structure demolition data, which consist of several information such item such as: office, warehouse,
workshop, fuel tank, primary processing, secondary processing, stacker, loading facility, foundations, belt conveyor, railway, bridge, electricity transmission, pole,
fence, and none, material type such as: bricks, concrete, metal, iron pipe, belt conveyor, wood, wires, and shaped concrete, cost and volume as shown on
Figure 4.7.
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Figure 4.7 Mine facilities removal cost form
Figure 4.8 Material Handling Plan form Figure 4.8 maps material handling item of reclamation data such as
earthmoving activity consist of: back filling, surface ordering, final ordering, spreading, and other activity, volume, source and destination of location, haul
distance of the equipment, grade of slope level, and type of equipment consist of: back hoe loader, bulldozer, dump truck, hyd breaker, hyd excavator, motor grade,
track loader, and wheel loader. An additional activity of equipment with specific activity also can be inputted using ‘additional activity’ form represented by add
activity button Figure 4.9. It comprises productivity and operational hour
calculation item and productivity calculation items such as cycle time and net bucket capacity. The estimation of haul distance and grade are determined
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manually, which means that the track of equipment draw and calculated by reclamation map.
Figure 4.9 Additional Equipment Activity form
Revegetation activity data of mined area can be stored in ‘revegetation
cost’ form Figure 4.10 that consist of component such as: seeding, planting,
maintaining and monitoring, sub component such as: main vegetation seed, seeding placed making, polybag provisioning, lime, medicines, labor, fertilizer,
soil analysis, specify data, unit, needs, cost and revegetated area wide.
Figure 4.10 Revegetation Cost form Indirect cost form as shown in Figure 4.11 is a form used to enter direct
cost data such as equipment mobilization and demobilization, reclamation
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planning cost percentage, administration cost and contractor profit percentage, administration cost and contractor profit percentage, and management cost
percentage. The range of equipment mobilization and demobilization is fixed around 2.5 to 10 based on the government regulation.
Figure 4.11 Indirect Cost form
All of reclamation input data form based on mine company report submitted for each period in a year in order to fulfill government regulation for
reclamation cost per year. Meanwhile, reclamation bond planning for every 5 five year is also entered into this system throughout ‘actual reclamation cost’
form. The total amount of reclamation cost can be seen in ‘reclamation cost recapitulation’ form represented by reclamation cost recapitulation button in main
form.
Figure 4.12 maps the annual total reclamation cost which consists of total
direct cost per year, total indirect cost per year, and total reclamation cost for 5 five years. Specific form to perform annual reclamation cost available in
‘reclamation cost recapitulation’ button on main form. The list of material handling for each year’s mine activities captured on ‘material handling
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recapitulation’ form followed as Figure 4.13. Material handling describes several
reclamation activity such digging and back filling using heavy equipment.
Figure 4.12 Total Reclamation Cost form
Figure 4.13 Material Handling Recapitulation form
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The DSS Tool analysis of this application placed on ‘reclamation bond comparison’ form due to compare the amount of reclamation bond which
calculated automatically by the application and the amount of reclamation bond from mining company report. The signal of comparison appears when these
values meet the variance of particular constrain given before Figure 4.14.
Specific user such administrator is allowed to change the remark of comparison category for achieving mark of mine reclamation performance.
Figure 4.14 Reclamation Bond Calculation form
‘Financial compulsory’ form consists of a description of mine reclamation items such as surety bond, security deposit, minimum expenditure, fixed levy,
government part of production result, taxes, regional government tax and
retribution Figure 4.15.
Figure 4.15 Financial Compulsory form
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Administrator and other user are also allowed to add and edit cost of equipment and labor by using ‘equipment cost module’ form and ‘labor cost
module’ form. Figure 4.16 shows the cost list of heavy equipment and labor,
which is used to calculate total cost expenditure for material handling and earth moving activity.
Figure 4.16 Equipment and Labour Cost form
Cost Component form consists of direct reclamation and indirect reclamation data in detail. It describes all activities concerning direct reclamation
data Figure 4.17.
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Figure 4.17 Cost component form
4.2.2. DSS Tool Analysis
