Wan Dalila Wan Ismail - Academia.edu (original) (raw)

Papers by Wan Dalila Wan Ismail

Kajian tentang prestasi industri perkhidmatan air telah dijalankan secara meluas dan kebanyakan k... more Kajian tentang prestasi industri perkhidmatan air telah dijalankan secara meluas dan kebanyakan kajian telah menggunakan model Analisis Penyampulan Data (APD) yang hanya mengukur skor kecekapan. Namun begitu, kajian untuk mengukur keberkesanan dalam industri perkhidmatan air amat jarang dilakukan. Kajian tentang kecekapan dan keberkesanan adalah penting untuk mengukur prestasi keseluruhan bagi sesebuah organisasi. Oleh sebab proses pengeluaran perkhidmatan air boleh dinyatakan sebagai proses dua peringkat, maka, dalam kajian ini, model APD dua peringkat untuk mengukur prestasi perkhidmatan air digunakan. Model ini membolehkan integrasi kecekapan dan keberkesanan perkhidmatan air serta memberikan penilaian prestasi keseluruhan perkhidmatan air Malaysia. Hasil yang diperoleh menunjukkan bahawa servis di kebanyakan daripada 14 buah negeri yang terlibat adalah cekap tetapi hanya empat buah negeri sahaja yang berkesan. Bagaimanapun, terdapat tiga buah negeri yang menunjukkan prestasi keseluruhannya dengan kecekapan penuh (cekap dan berkesan) dalam menghasilkan dan membekalkan air bersih kepada pengguna.

World applied sciences journal, 2012

Employees' turnover intention has always been a key concern faced by organizations regardless... more Employees' turnover intention has always been a key concern faced by organizations regardless of their location, size or nature of business. Base on a review of the literature, majority of the studies had identified a negative relationship between leadership style and employees' turnover intention in various fields of industries. This study was conducted on the academic staff in a community college in Malaysia. The results of this study did not support the outcome of previous research. Although, transformational and transformational leadership styles are found to have negative relationship to employee turnover intention but the correlation of these two variables are not significant.

Journal of Modern Applied Statistical Methods, 2013

Principal component analysis reduces dimensionality; however, uncorrelated components imply the e... more Principal component analysis reduces dimensionality; however, uncorrelated components imply the existence of variables with weights of opposite signs. This complicates the application in data envelopment analysis. To overcome problems due to signs, a modification to the component axes is proposed and was verified using Monte Carlo simulations.

The way in which telecommunication companies interact with their customers has changed dramatical... more The way in which telecommunication companies interact with their customers has changed dramatically over the past few years. A customer's loyalty to a certain telecommunication company is no longer guaranteed. The telecommunication companies must deal with a large amount of competitors. To succeed, telecommunication companies must be proactive and anticipate what customer desires. It was found that telecommunication companies need to understand their customers well and to quickly feedback to them wants and needs in order to success. The objectives of this research are to discover the patterns of prepaid mobile phone user using SPSS as one of the method in data mining and to predict the customer behavior for marketing strategy. In this research, primary and secondary resources are used in order to fulfill the research objectives. Primary data are collected through the distribution of questionnaire. The questionnaire consists of 29 questions and was distributed to the prepaid mobile phone users in Shah Alam. The total of 100 questionnaires was collected within two-week period. While secondary data is taken from journals and Internet resources. All data gathered from this research were analyzed using SPSS version 12.0 software. Data were presented in the form of frequency distribution tables for selected variables and via graphical presentation like bar and pie charts. From the research conducted, majority of the prepaid user are student. Most of them subscribed to Maxis the their family also subscribe to Maxis. Most of the users choose to subscribe to the same operator as their families subscribe to. Majority of the user prefer to use SMS rather than make a phone call. Majority of the user spend above RM50 a month to reload the credit. Most of the user likes to travel as their leisure activities. They also like to go shopping and watching movies. Most of the users choose which mobile operators to subscribe to because of the call and SMS rate charge by the operator, network coverage of the mobile operator, promotions and innovative services provided by the mobile operator.

Procedia - Social and Behavioral Sciences, 2015

This paper concerns the survival of the buildings along a heritage street known as Tan Hiok Nee S... more This paper concerns the survival of the buildings along a heritage street known as Tan Hiok Nee Street in Johor Bahru, Malaysia. The research was conducted to examine the current situation of the street especially in the use of the buildings. The data was collected from site observation, literature review and interview of the tenants, owners and visitors. The finding suggests that some of the buildings do not meet the current demands of the users. Some strategies need to be devised in order to retain the heritage street for the benefit of the future generations.

Evidence-Based Complementary and Alternative Medicine, 2015

The antidiabetic properties ofTinospora crispa, a local herb that has been used in traditional Ma... more The antidiabetic properties ofTinospora crispa, a local herb that has been used in traditional Malay medicine and rich in antioxidant, were explored based on obesity-linked insulin resistance condition. Male Wistar rats were randomly divided into four groups, namely, the normal control (NC) which received standard rodent diet, the high fat diet (HFD) which received high fat diet only, the high fat diet treated withT. crispa(HFDTC), and the high fat diet treated with orlistat (HFDO). After sixteen weeks of treatment, blood and organs were harvested for analyses. Results showed thatT. crispasignificantly (p< 0.05) reduced the body weight (41.14 ± 1.40%), adiposity index serum levels (4.910 ± 0.80%), aspartate aminotransferase (AST: 161 ± 4.71 U/L), alanine aminotransferase (ALT: 100.95 ± 3.10 U/L), total cholesterol (TC: 18.55 ± 0.26 mmol/L), triglycerides (TG: 3.70 ± 0.11 mmol/L), blood glucose (8.50 ± 0.30 mmo/L), resistin (0.74 ± 0.20 ng/mL), and leptin (17.428 ± 1.50 ng/mL) hor...

ABSTRACT In this paper we solve a special Quadratic Assignment Problem (QAP) which consists of de... more ABSTRACT In this paper we solve a special Quadratic Assignment Problem (QAP) which consists of deciding the assignment of customers to loading positions as well as fulfilling their demands, i.e. a double-assignment problem. Brief introductions about QAP and its applications are also given. In this work, the main questions are (i) where a customer should be assigned in a list of possible loading positions, (ii) from which storage areas should the customer be served, and (iii) how many lifting truck should be assigned to each loading position in order to minimize cost and residence time. We have applied the Greedy Algorithm to get a good initial solution, and then a modified Genetic Algorithm to find the best solution to the problem. We explored the nearest neighbour using recombination procedure and maintaining the elements with the lower cost. The best solution found is always saved. Comparison with previous work and suggestions for further work has also been included.

2012 International Conference on Statistics in Science, Business and Engineering (ICSSBE), 2012

ABSTRACT This paper presents the operator allocation decisions in labor-intensive manufacturing s... more ABSTRACT This paper presents the operator allocation decisions in labor-intensive manufacturing system. An integrated computer simulation and Data Envelopment Analysis (DEA) are used in determining the best operator allocation alternative. A computer simulation is used to generate inputs and outputs for proposed alternatives. The input variables used in this study are average cycle time and average waiting time, while total parts produced, and average operator utilization are the output variables. DEA is used to analyze the proposed alternatives. The result of the study at the production line of a disk drive components manufacturing plant shows that the optimal operator allocation alternative proposed two operators for each operation.

2009 2nd Conference on Data Mining and Optimization, 2009

... Ahmed Oughalime1, Wan Rosmanira Ismail2, Choong-Yeun Liong3, Masri Ayob4 1,2,3School of Mathe... more ... Ahmed Oughalime1, Wan Rosmanira Ismail2, Choong-Yeun Liong3, Masri Ayob4 1,2,3School of Mathematical Sciences, Faculty of Science and Technology, 4Data Mining and Optimisation Research Group, Department of Computer Science, Faculty of ... Haghani et al. ...

BMC Complementary and Alternative Medicine, 2014

Background Since ancient times, honey has been used for medicinal purposes in many cultures; it i... more Background Since ancient times, honey has been used for medicinal purposes in many cultures; it is one of the oldest and most enduring substances used in wound management. Scientific evidence for its efficacy is widely studied, but systemic safety studies are still lacking. It is essential to study the impact of consumption of honey on the health and proper development of the consumer. Therefore, the present study was designed to observe the effects of acute administration (14 days) of Gelam honey (GH), a wild harvesting honey and Acacia honey (AH), a beekeeping honey, on male and female Sprague Dawley (SD) rats. Methods An acute oral study was performed following OECD test guideline 423, with minor modifications. In the study, GH, AH and sucrose (S) were administered at 2000 mg/kg body weight. Animals were obse rved for the next 14 days. Gross pathology was performed at the end of the study. Animals were observed for mortality, morbidity, body weight changes, feed and water intake....

ITB journal of Sciences, 2011

Scheduling is a very tedious task in organizations where duty is around the clock. Constructing t... more Scheduling is a very tedious task in organizations where duty is around the clock. Constructing timetable for nurses in hospital is one of the challenging jobs for the head nurse or nurse manager. It requires a lot of time to spend for generating a good and fair timetable. Thus, in this study, we propose a cyclical nurse scheduling model using a 0-1 goal programming that would help the head nurse or nurse manager to have less effort on building new schedules periodically. The proposed model satisfies the stated hospital's policies and the nurses' preferences. The result obtained from this model gives an optimal solution where all goals are achieved. The model also provides an unbiased way of scheduling the nurses and thus leads to an overall higher satisfaction and fairness to the nurses and the hospital management.

2008 International Symposium on Information Technology, 2008

Nurse scheduling is the process of allocating shifts for nurses by specifying the sequence of shi... more Nurse scheduling is the process of allocating shifts for nurses by specifying the sequence of shifts for each nurse in the scheduling period. Generating good schedules for nurses is a very difficult and tedious problem due to the operational of hospital that runs 24 hours a day and 7 days a week. Schedule that has work shifts is a big

ABSTRACT The scheduling of nurses is particularly challenging because of the nature of the work w... more ABSTRACT The scheduling of nurses is particularly challenging because of the nature of the work which is around the clock. In addition, inefficient duty roster can have an effect on the nurses well being as well as their job satisfaction. In nurse scheduling problem (NSP), nurses are generally allocated to periods of work over a specified time horizon. A typical length of the schedule varies from a few weeks to a month. The schedule will be consistently rebuilt after the specified time period and will result in a time-consuming task for the administrative staff involved. Moreover, the task becomes overwhelming when the staff needs to consider the previous duty rosters in order to maintain the quality of schedules. Therefore, this study suggests the development of a master plan for a nurse duty roster for approximately one year. The master plan starts with the development of a blue print for the nurse duty roster using a 0-1 goal programming technique. The appropriate working period for this blue print is formulated based on the number of night shifts and the number of required nurses for night shift per schedule. Subsequently, the blue print is repeated to complete the annual nurse duty roster. These newly developed procedures were then tested on several data sets. The test results found that the master plan has successfully distributed the annual workload evenly among nurses. In addition, the master plan allows nurses to arrange their career and social activities in advance.

This paper presents the operator allocation decision in labor-intensive manufacturing system usin... more This paper presents the operator allocation decision in labor-intensive manufacturing system using a threephase methodology. A two-phase methodology from literatures has been extended to a three-phase methodology which in a three-phase methodology, operators' performance is evaluated before the allocation is made. The evaluation of operators' performance in Phase 1 is realized as a requirement in operator allocation decision because it will affect the production system's performance. In Phase 2, the used of computer simulation offered flexibility in determining inputs and outputs of each operator allocation alternative. Finally, in Phase 3 the optimal operator allocation is concluded. The combination of these three phases is essential because it includes all important factors. Hence, it will assist the management of the manufacturing companies, especially SMEs in providing ideas to determine an optimal operator allocation. Based on these findings a three-phase methodology improves the current operator allocation.

Asian Pacific Journal of Tropical Disease, 2014

Introduction: Biosynthesized gold nanoparticles is one of the novel benchmark for using medical c... more Introduction: Biosynthesized gold nanoparticles is one of the novel benchmark for using medical commercial industry. Recently gold nanoparticles were used for the detection of tumor, hormones, glucose and other biomolecules in health care sectors. Due to the different functional properties AuNPs was used for hormone detection was carried out in this study. Objectives: Biosynthesized gold nanoparticles were used to qualitatively determine the hCG hormone in pregnancy women urine sample. Methods: The biosynthesis of gold nanoparticles using C.nudiflora plant extract. Synthesized gold nanoparticles were characterized by different analytical techniques such as FESEM, XRD and FTIR. The synthesized gold nanoparticles was used to perform hCG hormone detection on both pregnancy positive and negative urine sample.500 μL of the prepared gold solution and an equal volume of the test sample were mixed and used for assays. After that, the solution was tested using a pregnancy test strip. Results & Discussion: The mixture of gold nanoparticles in the urine sample changed color into pink that confirmed pregnancy. Otherwise it turned into gray color that showed the absence of pregnancy. Conclusion: The method was supported 100 % accurate in diagnosis of pregnancy and it may be a good alternative method for urine pregnancy test.

This study deals with bus scheduling problem in a local public university. Given existing bus dai... more This study deals with bus scheduling problem in a local public university. Given existing bus daily trips, set of buses used and set of policy, the aims of this study are to optimize the use of buses for in-campus trips and to cover the trip demands. This study is conducted at Universiti Teknologi Mara (UiTM) Shah Alam that involves six-zone trips and a single depot. The bus scheduling problem in UiTM is formulated using the integer programming model and the LINGO 12.0 software is used for solving this bus scheduling model. The results of this model showed that the number of buses can be reduced during off-peak hours. Furthermore, optimal trips can also be identified from the results.

This paper was conducted to determine the optimal travel routes for self-drive tourism based on t... more This paper was conducted to determine the optimal travel routes for self-drive tourism based on the allocation of time and expense by maximizing the amount of attraction scores assigned to each city involved. Self-drive tourism represents a type of tourism where tourists hire or travel by their own vehicle. It only involves a tourist destination which can be linked with a network of roads. Normally, the traveling salesman problem (TSP) and multiple traveling salesman problems (MTSP) method were used in the minimization problem such as determination the shortest time or distance traveled. This paper involved an alternative approach for maximization method which is maximize the attraction scores and tested on tourism data for ten cities in Kedah. A set of priority scores are used to set the attraction score at each cit y. The classical approach of the orienteering problem was used to determine the optimal travel route. This approach is extended to the team orienteering problem and the two methods were compared. These two models have been solved by using LINGO12.0 software. The results indicate that the model involving the team orienteering problem provides a more appropriate solution compared to the orienteering problem model.

Total Quality Management & Business Excellence, 2012

This article presents a conceptual framework for the development of a value-based total performan... more This article presents a conceptual framework for the development of a value-based total performance excellence model (VBTPEM) in organisations. This model signifies core values as a strategic component for an organisation to achieve total performance excellence. The VBTPEM is an extension of the earlier version of the TPEM proposed by Husain et al. [