scholarly journals Business Process Scheduling with Resource Availability Constraints

Author(s):  
Jiajie Xu ◽  
Chengfei Liu ◽  
Xiaohui Zhao ◽  
Sira Yongchareon
2016 ◽  
Vol 7 (3) ◽  
pp. 1-26 ◽  
Author(s):  
Jiajie Xu ◽  
Chengfei Liu ◽  
Xiaohui Zhao ◽  
Sira Yongchareon ◽  
Zhiming Ding

2018 ◽  
Vol 35 (05) ◽  
pp. 1850032
Author(s):  
Wan-An Cui

In order to identify critical activities and critical sequences under resource availability constraints, resource dependencies need to be established. By doing this, project managers and practitioners can focus their limited energy on specific activities and paths during the execution of a project schedule, thus guaranteeing that the project gets finished on time and with the available resources. This study proposes various rules to judge the superiority or inferiority of the methods of dependencies’ creation. The total number of critical sequences which is one of these rules, directly influences the degree of difficulty in controlling the whole project — a major concern for project managers. This study classifies activities in a resource-constrained project schedule on the basis of the relationships between activities and develops the basic idea behind the optimization of resource dependencies. Specifically, two mathematical models to minimize the total number of critical sequences and that of resource links through the table translation method are proposed. A computation example shows great improvement in the number of critical sequences, critical activities and resource links and gives effective results while solving the problems in the previous research. Moreover, simulations using J30, J60, and J120 instances by Kolisch highlight the high computing speed when searching for the actual minimum number of critical sequences and resource links thanks to the table translation method.


2019 ◽  
Vol 65 (4) ◽  
pp. 295-307
Author(s):  
S. Biruk ◽  
P. Jaskowski ◽  
M. Krzemiński

AbstractMost construction projects involve subcontracting some work packages. A subcontractor is employed on the basis of their bid as well as according to their availability. A viable schedule must account for resource availability constraints. These resources (e.g. crews, subcontractors) engage in many projects, so they become at the disposal for a new project only in certain periods. One of the key tasks of a planner is thus synchronizing the work of resources between concurrent projects. The paper presents a mathematical model of the problem of selecting subcontractors or general contractor’s crews for a time-constrained project that accounts for the availability of contractors, as well as for the cost of subcontracting works. The proposed mixed integer-binary linear programming model enables the user to perform the time/cost trade-off analysis.


2017 ◽  
Vol 3 (2) ◽  
pp. 91
Author(s):  
Dody Haryadi ◽  
Ade Jamal

<p><em>Abstrak</em> - <strong>Proses penjadwalan kuliah di suatu Universitas merupakan suatu proses yang memiliki peran penting. Dengan adanya sistem yang dapat melakukan penjadwalan dengan mempersingkat proses dan tidak adanya jadwal yang bentrok, kegiatan perkuliahan akan berjalan secara tertib. Penelitian ini akan membahas mengenai proses penjadwalan kuliah di Universitas Al Azhar Indonesia (UAI) dengan menggunakan algoritma genetika. Analisa kebutuhan sistem dilakukan sesuai dengan proses bisnis penjadwalan kuliah di UAI. Pada algoritma genetika ini terdapat <em>hard constrain</em> dan <em>soft constrain</em> yang bisa ditentukan sesuai dengan kebutuhan, seperti satu jadwal kuliah tidak boleh ada yang beririsan dengan jadwal kuliah yang lainnya. Sistem dapat merekam jadwal yang dapat dipenuhi dan juga tidak dapat dipenuhi dosen, sehingga ketika dalam proses penjadwalan, sistem dapat mencari waktu pengganti lainnya. Terdapat perubahan proses bisnis penjadwalan kuliah di UAI, dan juga berdampak pada pengembangan sistem informasi penjadwalan kuliah. Terdapat input dan output file json yang digunakan untuk komunikasi antara sistem informasi penjadwalan kuliah yang ada dengan sistem penjadwalan algoritma genetik. </strong></p><p><strong> </strong></p><p><strong><em>Kata Kunci</em></strong><strong> – </strong><em>Penjadwalan Kuliah, Algoritma Evolusi, Presensi Waktu Dosen</em></p><p> </p><p><strong>Abstract - The process of scheduling a lecture at a university is a process that has an important role. With a system that can perform scheduling by shortening the process and the absence of conflicting schedules, lecture activities will run in an orderly manner. This research will discuss about the process of scheduling lecture at Al Azhar University of Indonesia (UAI) by using genetic algorithm. Analysis of system requirements is done in accordance with business process scheduling lectures at UAI. In this genetic algorithm there is a hard constrain and soft constrain that can be determined according to need, such as a lecture schedule should not be any that incline with other lecture schedules. The system can record schedules that can be met and also can’t be met lecturers, so that when in the process of scheduling, the system can find another replacement time. There is a change in the business process of lecture scheduling in UAI, and also has an impact on the development of lecture scheduling information system. There is an input and output json file that is used for communication between existing lecture scheduling information systems with genetic algorithm scheduling system.</strong></p><p><strong> </strong></p><strong><em>Keywords</em> - </strong><em>Scheduling Lectures, Evolution Algorithm, Lecturer Time Presentation</em>


GeroPsych ◽  
2014 ◽  
Vol 27 (4) ◽  
pp. 171-179 ◽  
Author(s):  
Laurence M. Solberg ◽  
Lauren B. Solberg ◽  
Emily N. Peterson

Stress in caregivers may affect the healthcare recipients receive. We examined the impact of stress experienced by 45 adult caregivers of their elderly demented parents. The participants completed a 32-item questionnaire about the impact of experienced stress. The questionnaire also asked about interventions that might help to reduce the impact of stress. After exploratory factor analysis, we reduced the 32-item questionnaire to 13 items. Results indicated that caregivers experienced stress, anxiety, and sadness. Also, emotional, but not financial or professional, well-being was significantly impacted. There was no significant difference between the impact of caregiver stress on members from the sandwich generation and those from the nonsandwich generation. Meeting with a social worker for resource availability was identified most frequently as a potentially helpful intervention for coping with the impact of stress.


Author(s):  
Dina Fitrianingrum ◽  
Sulastiningsih Sulastiningsih

The objective of the research is to evaluate performance of Madubaru firm. This research use the methode of Balanced Scorecard which balancing measurement of non finance performance and finance performance. In the perspective learning and growth emphasize on the education and employees training, and also employees satisfaction. In the perspective of internal business process, it emphasize at the the level of success and organizational development. In perspective of customer emphasize at the customer satisfaction. In perspective of finance can see from finance ratio. The research have result learning and growth perspective with good performance, internal business process perspective with very good performance, customer perspective with enough performance, financial perspective estimation with good performance. At general we can assesd performanced of Madubaru firm is good and expected to be improved again. Keyword : Balanced Scorecard, Learning and Growth Perspective, Internal Business Process Perspective, Customer Perspective, Financial Perspective.


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