Assessment of Global Geopotential Models for Modelling Malaysia Marine Geoid

The evaluation towards global geopotential models represents a significant part in modelling the localised Marine Geoid. The marine geoid provides the vertical reference information in Marine Spatial Data Infrastructures (MSDI) development response to United Nations Sustainable Development Goals 14 for the sustainable development in marine environment. The main purpose of this study is to select the best model from both combined missions and satellite-only missions for the Malaysian region. The gravity anomaly field from 30 global models were exclusively calculated over the selected study area within 11 years period-time. Afterwards, each dataset was extracted from the ICGEM server to evaluate with the airborne-derived gravity anomaly from the Department of Surveying and Mapping, Malaysia. The internal accuracy, root mean square error (RMSE) and differences between every model and airborne data were computed. The result indicates GGM-derived gravity anomaly for the best combined mission is GECO with RMSE of 8.44 mGal and the standard deviation value of 28.034 mGal. While, the model from Gravity field and steady state Ocean Circulation Explorer (GOCE) namely, the GO_CONS_GCF_2_DIR_R5 is the best for the satellite-only mission with RMSE of 17.43 mGal and the standard deviation value of 22.828 mGal. As a conclusion, GECO model is preferred as the best fit for determining the marine geoid as it has the lowest RMSE value between both mission and the maximum degree of 2109o coverage. The finding can assist in development of marine geoid for modelling precise surface elevation

Assessment of Global Geopotential Models for Modelling Malaysia Marine Geoid

The evaluation towards global geopotential models represents a significant part in modelling the localised Marine Geoid. The marine geoid provides the vertical reference information in Marine Spatial Data Infrastructures (MSDI) development response to United Nations Sustainable Development Goals 14 for the sustainable development in marine environment. The main purpose of this study is to select the best model from both combined missions and satellite-only missions for the Malaysian region. The gravity anomaly field from 30 global models were exclusively calculated over the selected study area within 11 years period-time. Afterwards, each dataset was extracted from the ICGEM server to evaluate with the airborne-derived gravity anomaly from the Department of Surveying and Mapping, Malaysia. The internal accuracy, root mean square error (RMSE) and differences between every model and airborne data were computed. The result indicates GGM-derived gravity anomaly for the best combined mission is GECO with RMSE of 8.44 mGal and the standard deviation value of 28.034 mGal. While, the model from Gravity field and steady state Ocean Circulation Explorer (GOCE) namely, the GO_CONS_GCF_2_DIR_R5 is the best for the satellite-only mission with RMSE of 17.43 mGal and the standard deviation value of 22.828 mGal. As a conclusion, GECO model is preferred as the best fit for determining the marine geoid as it has the lowest RMSE value between both mission and the maximum degree of 2109o coverage. The finding can assist in development of marine geoid for modelling precise surface elevation

Press machine process improvement by using DOE method

The purpose of this study is to improve the efficiency of press machine for producing finish good product thru design of experiments application. Press process is significant to improve since the output of the palm oil product will be divided into two which are palm oil and palm nuts. The objective of this study is to identify the best parameter setting for reduce broken nuts during press process thru adoption of the design of experiments method. A full factorial design with single replication has been used to study the effects of important parameters which are temperature, cone angle, cone pressure and percentage of water. The measurement of output response is identified as percentage of broken nut. Referring to the company specification, the percentage of broken nuts must not exceed than 7 %. Randomize experiments was conducted based on table generated thru Minitab software. Normal probability test was carried out using Anderson Darling Test and show that the P-value is 0.325. Thus, the data is normal since there is no significance different between the actual data with the ideal data. Referring to effect estimate value for each parameter, factor B (Cone Angle) was not significant. Thus the experiments were converted from 24 to 23 with two replications. Referring to the ANOVA, all of the factors are significant except the AC interaction since the P -value for each of parameters less than 0.05. From the main plot and interaction plot, the recommended setting for each of parameters were suggested as low level for temperature, low level for cone pressure and high percentage of water. The prediction model was developed thru regression in order to measure effect of output response for any changes on parameters setting. In the future, the experiments can be enhanced using two replications of experiment and Taguchi methods in order to do verification of result

A method for marine cadastral information dissemination

As one of the maritime nations, development in Malaysia not only takes place on the land but also extends to the marine area. In addition, technology advancement has influenced and changed the surveying industry and global mapping. Through preliminary research regarding marine cadastre, the framework for Marine Cadastre Processing System has been produced with ability to process data from the fieldwork, to compute and to adjust the information regarding marine areas. The purpose of this study is to facilitate the sharing and dissemination of Marine Cadastral information as well as an initiative to develop an online web-based GIS application. In this study, the architecture of the framework for Marine Cadastre Processing System was implemented as a means to process the data from Marine Cadastre demarcation. Moreover, this system has the capability to access the Marine Cadastre data via internet and its efficiency has been given emphasis using ArcGIS Server version 9.3. The development of Marine Cadastre geospatial database has been executed to support the system. Testing carried out using the same workstation as the server indicates that the system is fully functional to process the data and be accessed by the users via internet. The potential to disseminate and share the Marine Cadastral information has been successfully proved and the study can act as one of the initiatives for our country especially in the field of Marine Cadastre

Development of automated cadastral database selection and visualization system to support the realization of modern cadastrate in malaysia

The process of extracting land records information especially cadastral data for a large number of land title was tedious and time consuming. The development of State Digital Cadastral Database (SDCDB) by Department of Survey and Mapping Malaysia (DSMM) is one of the initiatives to shift to modern cadastral system. Cadastral data need to be adjusted in order to verify the network closure. In order to move to a new adjustment approach, a so-called Least Squares, an Intelligence Based Automated Cadastral Database Conversion System must be developed. The automated functions of the said system are;i) generate of zones and overlapping areas, ii)extracting cadastral information from existing SDCDB,iii) automatically conduct an intelligence cadastral survey concept self- checking procedure, iv) re-compute or rebuild the cadastral records based on mathematical cadastral survey rules, v) automatically prepare corrected data input files ( SDCDB and GPS) for a particular zone and vi) reformatting of data for input into least squares adjustment software. The advantages of automation can be exploited in order to solve or to minimize the needs of manual approach. In order to support the development of survey accurate cadastral system, an automatic programming approach will be adopted. Database selection system will conduct several outliers integrity checking, rebuild cadastral spatial topology (cadastral lot) and make selfcorrection procedures based on cadastral survey concepts and mathematical model respective to the cadastral lots selected. This is to ensure that all cadastral lots are kept in a closed polygon and provide accurate and "clean" cadastral information.. This system was developed in windows environment. Analyses show that the system is functional efficiently. This system is essential and important towards the implementation of computerized Coordinated Cadastral System in Malaysia and it is highly depends on the automated system.. Therefore an Intelligence Based Automated Cadastral Database Selection System is highly potential as a main system application for DSMM or private sector

Sustainable marine space managements - Malaysia perspective

The management of good governance of marine space administration has been debated since at least the 2000s. An extensive literature and research report it is hardly surprising then that this marine space is under serious threat from a myriad of overlapping and conflicting interests. The evidence of change is compelling and manifest. It is therefore imperative to manage, administer and govern the coastal zone in a considered, sustainable and structured manner as well as to protect and nurture the environment we live in. Failure to do so may have disastrous consequences for future generations (FIG, 2006). This includes polishing the management system, particularly the governance of marine space administrative to support marine rights. Sutherland and Nichols (2006) said that the oceans provide an opportunity to not make the same mistakes we have made in land resource management and land information systems. Marine space administration and management can help to improve our governance and information systems on coastal and marine areas. This unresolved problem has led to the lack of a concerted effort in the existing management in the marine space and the quality of sustainable marine space administration is indirectly being affected. From the perspective of management, Malaysia has many institutions that manage and administering the marine environment. However, the developing of institutional framework is still uncertain with ambiguities, conflicts and overlapping on administration and management models due to the bill of act. This paper explores the contributing elements of the Malaysia marine space administration issues towards sustainable marine space administration