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Performance Engineering Case Study: Heap Construction [chapter]

Jesper Bojesen, Jyrki Katajainen, Maz Spork
1999 Lecture Notes in Computer Science  
The behaviour of three methods for constructing a binary heap is studied.  ...  Let N denote the size of the heap to be constructed, B the number of elements that t into a cache line, and let c and d be some positive constants.  ...  CONCLUDING REMARKS The problem of constructing a heap is well studied and well understood.  ... 
doi:10.1007/3-540-48318-7_24 fatcat:sny4cs4u45cmrpup7lg7llpdmu

Debug-Localize-Repair: A Symbiotic Construction for Heap Manipulations [article]

Sahil Verma, Subhajit Roy
2022 arXiv   pre-print
We present Wolverine2, an integrated Debug-Localize-Repair environment for heap manipulating programs.  ...  circular linked lists, AVL trees, Red-Black trees, Splay Trees and Binary Search Trees; Wolverine2 could repair all the buggy instances within realistic programmer wait-time (less than 5 sec in most cases  ...  To compare our algorithm against the existing algorithms, we developed a test generation engine for heap manipulating programs.  ... 
arXiv:2011.13396v2 fatcat:4oi2oulbdfbk7lvka7563o5qd4

HEAP - The autonomous walking excavator

Dominic Jud, Simon Kerscher, Martin Wermelinger, Edo Jelavic, Pascal Egli, Philipp Leemann, Gabriel Hottiger, Marco Hutter
2021 Automation in Construction  
Beside kinematic measurements, it includes GNSS-RTK, to absolutely reference the machine on a construction site.  ...  This article describes the process of converting an off-the-shelf construction machine into an autonomous robotic system.  ...  [40] Autonomous forestry work In a case study on autonomous forestry, HEAP was deployed to harvest trees.  ... 
doi:10.1016/j.autcon.2021.103783 fatcat:ys7dbon25jeebis5lspavyq53y

In-place Heap Construction with Optimized Comparisons, Moves, and Cache Misses [chapter]

Jingsen Chen, Stefan Edelkamp, Amr Elmasry, Jyrki Katajainen
2012 Lecture Notes in Computer Science  
On another frontier, we compare different heap-construction alternatives in practice.  ...  To construct a binary heap in-place, we use this algorithm to build bottom heaps of size Θ(lg n) and adjust the heap order at the upper levels using Floyd's sift-down procedure.  ...  In the worst case, Floyd's algorithm performs at most 2n element comparisons and 2n element moves.  ... 
doi:10.1007/978-3-642-32589-2_25 fatcat:laqctkvlzvbkjl7p6cjpxbvon4

Collaborative information integration for construction safety monitoring

Qingwen Xu, Heap-Yih Chong, Pin-Chao Liao
2019 Automation in Construction  
To 20 evaluate the proposed framework, a prototype system was developed and tested as a 21 case study for building projects in Qingdao, China.  ...  However, asymmetric 13 safety information and inefficient communication between various stakeholders 14 currently limit the effectiveness of safety monitoring in the construction industry.  ...  The automatic monitoring of structures under construction is well-189 suited to foundation pit engineering, tunnel engineering, and bridge engineering. the previous studies were either manual inspection  ... 
doi:10.1016/j.autcon.2019.02.004 fatcat:rl2t3bspn5gj5dq7uuqrdgekze

The Influence of Social Capitalism on Construction Safety Behaviors: An Exploratory Megaproject Case Study

Xiuyu Wu, Heap-Yih Chong, Ge Wang, Shuquan Li
2018 Sustainability  
An exploratory case study was adopted from a mega construction project in Tianjin, China.  ...  To address this research gap, the current study aims to determine the influence of social capitalism on safety behaviors from a two-fold perspective between project managers and construction workers.  ...  An explanatory case study was adopted from a mega construction project in Tianjin, China.  ... 
doi:10.3390/su10093098 fatcat:7bulixyesrgotjjsso3b2i4qzy

Study of Mechanical Performance Affecting Factors in Split Casing Pump

2020 International Journal of Engineering and Advanced Technology  
Rotating power usually comes from an electric car, which is turned by the engine and the engine. There is a great demand for centrifugal pumps on the market.  ...  The construction is relatively inexpensive, durable and easy, and its high speed makes it possible to connect the pump directly to an unmatched car.  ...  Study of Mechanical Performance Affecting Factors in Split Casing Pump It is a challenge for the entire pump industry to reduce leaks. Seal performance greatly influences pump performance.  ... 
doi:10.35940/ijeat.b1992.1210220 fatcat:vandr533pzc5vdmx7f5otegite

Designing gold extraction processes: Performance study of a case-based reasoning system

Lotta Rintala, Maria Leikola, Christian Sauer, Jari Aromaa, Thomas Roth-Berghofer, Olof Forsén, Mari Lundström
2017 Minerals Engineering  
the system is of practical relevance to the process engineer designing an industrial gold processing plant.  ...  It was found that the suggestions of the CBR system provided useful information and direction for further process design and performed well compared to the interviewed human experts, thus confirming that  ...  Compiled case base The constructed case base is presented in Appendix A.  ... 
doi:10.1016/j.mineng.2017.02.013 fatcat:rw7wekau6rabvj5bp7dyqupzpy

Mapping BIM Uses for Risk Mitigation in International Construction Projects

Tsenguun Ganbat, Heap-Yih Chong, Pin-Chao Liao
2020 Advances in Civil Engineering  
The BIM can also effectively mitigate risks caused by particular and temporal differences during the construction process.  ...  This study complements prior risk-management research, which typically focused on the BIM as an advanced tool by which to manage project risk, such as design errors, quality, and budget.  ...  Acknowledgments e authors thank the Natural Science Foundation of China (no. 51878382) for their support of this study. e authors are also grateful for input received from the industry professionals who  ... 
doi:10.1155/2020/5143879 doaj:9a4a4e0fb3ea4cccbee742add690b30b fatcat:t7qk3zon4rgqldxxwvr7ehibqq

Testing with Fewer Resources: An Adaptive Approach to Performance-Aware Test Case Generation

Giovanni Grano, Christoph Laaber, Annibale Panichella, Sebastiano Panichella
2019 IEEE Transactions on Software Engineering  
This study shows that performance-aware test case generation requires solving two main challenges: providing a good approximation of resource usage with minimal overhead and avoiding detrimental effects  ...  Our empirical study -- involving 110 non-trivial Java classes -- reveals that our adaptive approach generates test suite with statistically significant improvements in runtime (-25%) and heap memory consumption  ...  THREATS TO VALIDITY Threats to construct validity regard the way the performance of a testing technique is defined.  ... 
doi:10.1109/tse.2019.2946773 fatcat:cqpronwkpjggpcpwdyunczsflm

Building information modeling in construction conflict management

Aref Charehzehi, ChangSaar Chai, Aminah Md Yusof, Heap-Yih Chong, Siaw Chuing Loo
2017 International Journal of Engineering Business Management  
Dispute is recognized as critical cause of deficiency and low performance in construction projects.  ...  Plenty of studies have been done in construction dispute management recently; however, there are no studies on construction dispute elimination.  ...  within the industry to improve the accuracy and speed of building engineering and construction management at all stages.  ... 
doi:10.1177/1847979017746257 fatcat:lazx6vuq2regfkxrqcyhmkyqfy

Incorporation of database approach into contractual issues: Methodology and practical guide for organizations

Heap-Yih Chong, Tick-Hwa Phuah
2013 Automation in Construction  
Microsoft Office Access tool was selected due to its widespread availability and user-friendliness to construction related organizations.  ...  Therefore, the objectives of the present study are: (a) to propose and develop a practical database system that can be employed by organizations to manage the past experiences, particularly for contractual  ...  Rosli, A Case Study into the Language Structure of Construction Standard Form in Malaysia, International Journal Project Management 28(6) (2010) 601-608.  ... 
doi:10.1016/j.autcon.2012.10.007 fatcat:lssujglwdvabrleslgztds7o7a

Circular Economy and Virtual Reality in Advanced BIM-Based Prefabricated Construction

Timothy M. O'Grady, Nicholas Brajkovich, Roberto Minunno, Heap-Yih Chong, Gregory M. Morrison
2021 Energies  
Finally, the proposed VR environment defines CE techniques implemented within the case study to be disseminated across the vast construction industry.  ...  A case study methodology was applied to a purposely designed CE building, namely the Legacy Living Lab (L3).  ...  This work was supported by the ReNEW Nexus project and CAMPH; however, neither were involved in the study design, the collection and analysis of data, the report writing or the decision to submit the article  ... 
doi:10.3390/en14134065 fatcat:36nvlzkwvzggxn5h65chu2uwba

Robust Optimization for Integrated Construction Scheduling and Multiscale Resource Allocation

Qian Li, Sha Tao, Heap-Yih Chong, Zhijie Sasha Dong
2018 Complexity  
Finally, a construction case is used to validate the proposed method.  ...  This research investigates an integrated problem of construction scheduling and resource allocation.  ...  Science Foundation of China (71571098, 71390520, 71390521, 61473326, 71501102, 71732003, and 71701090), the Fundamental Research Funds for the Central Universities (14380023), and the Lab for Public Engineering  ... 
doi:10.1155/2018/2697985 fatcat:kwww3a7u5rgxzda7wifsdqwb6a

Technical Review: Analysis and Appraisal of Four-Dimensional Building Information Modeling Usability in Construction and Engineering Projects

Robert Lopez, Heap-Yih Chong, Xiangyu Wang, Jeff Graham
2016 Journal of construction engineering and management  
Numerous studies were conducted to clarify the philosophy of BIM and promote its adoption in construction and engineering projects.  ...  The primary contributions this research presents to the construction engineering and management body of knowledge would be the technical review, analysis and appraisal of various issues concerned with  ...  This should translate into improvements in the overall performance of a construction / engineering project. 4D Usability Issues Important to users of any BIM software package would be its relative ease  ... 
doi:10.1061/(asce)co.1943-7862.0001094 fatcat:h7w65kqyqrbdrbovunidjdq74m
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