Showing papers by "Petra Christian University published in 2012"

Pengaruh shopping life style dan fashion involvement terhadap impulse buying behavior masyarakat high income surabaya

Abstract: Dynamics of the retailing business economy in Indonesia develop rapidly, so that it triggers the customers’ shopping lifestyle and their fashion involvement as well. They have higher expectation, demand more and desire better quality product consistently. But in the other side there are some problems. For instance the prosperity consumers spend their money fluctuatively and oftenly out their financial plan. The purpose of this research is proving, whether shopping lifestyle and fashion involvement will influence the impulse buying behavior of Surabaya’s high income community. As sampling, this study used the population of Surabaya that usually spend their money more or equal to Rp.1.250.000 per month, and ever go shopping at Galaxy mall, Lendmarc and Grand City. The technical analysis to examining the role of shopping lifestyle and fashion involvement toward the impulse buying behavior is Multi linear Regression. The examination result showed that Hedonic Shopping Value and Fashion Involvement influenced the Impulse Buying Behavior of Surabaya’s High Income Society.

Embedded Kalman Filter for Inertial Measurement Unit (IMU) on the ATMega8535

Abstract: The Kalman Filter is very useful in prediction and estimation. In this paper, the Kalman Filter is implemented for Inertial Measurement Unit (IMU) on the ATMega8535. The sensors used in this system are accelerometer MMA7260QT and gyroscope GS-12. The system chooses the arbitrary sampling time and then it is evaluated for possible using smaller value. As the Kalman Filter operation needs matrix calculation, the formula is converted into several ordinary equations. The parameter being investigated in this paper is measurement covariance matrix. This parameter influences the way the Kalman Filter responses to noise. Bigger value makes the Kalman Filter less sensitive to noise and the estimation is too smooth, thus it does not give real angle estimation. Using smaller value makes the Kalman Filter more sensitive to noise. This makes the estimated angle still suffers from noise and it is likely that the Kalman Filter is useless. This paper recommends 0.0001 to 0.001 for the measurement covariance noise parameter. This paper also recommended a pipeline configuration if the control algorithm needs more space in a sampling time.

An economic production quantity model for deteriorating items with preventive maintenance policy and random machine breakdown

Abstract: In recent years, many researches on economic production quantity EPQ models with machine breakdown and preventive maintenance have been developed, but few of them have developed integrated models for deteriorating items. In this study, we develop EPQ models for deteriorating items with preventive maintenance, random machine breakdown and immediate corrective action. Corrective and preventive maintenance times are assumed to be stochastic and the unfulfilled demands are lost sales. Two EPQ models of uniform distribution and exponential distribution of corrective and maintenance times are developed. An example and sensitivity analysis is given to illustrate the models. For the exponential distribution model, it is shown that the corrective time parameter is one of the most sensitive parameters to the optimal total cost.

Pozzolanic Activity Assessment of LUSI (LUmpur SIdoarjo) Mud in Semi High Volume Pozzolanic Mortar

Abstract: LUSI mud obtained from the mud volcano in Sidoarjo, Indonesia, is a viable aluminosilicate material to be utilized as pozzolanic material. LUSI is an abbreviation of the local name of the mud, i.e., Lumpur Sidoarjo, meaning Sidoarjo mud. This paper reports the results of an investigation to assess the pozzolanic activity of LUSI mud, especially in semi high volume pozzolanic mortar. In this case, the amount of mud incorporated is between 30% to 40% of total cementitious material, by mass. The content of SiO2 in the mud is about 30%, whilst the total content of SiO2, Fe2O3 and Al2O3 is more than 70%. Particle size and degree of partial cement replacement by treated LUSI mud affect the compressive strength, the strength activity index (SAI), the rate of pozzolanic activity development, and the workability of mortar incorporating LUSI mud. Manufacturing semi high volume LUSI mud mortar, up to at least 40% cement replacement, is a possibility, especially with a smaller particle size of LUSI mud, less than 63 μm. The use of a larger percentage of cement replacement by LUSI mud does not show any adverse effect on the water demand, as the flow of the fresh mortar increased with the increase of percentage of LUSI mud usage.

Effects of Calcination Temperature of LUSI Mud on the Compressive Strength of Geopolymer Mortar

Abstract: The abundant availability of LUSI (a short form of LUmpur SIdoarjo or Sidoarjo mud) mud of a mud volcano located in Sidoarjo, East Java, Indonesia, attracts interest of researchers to seek the possibility of utilizing it; among them is as construction material. This study focuses on the effect of calcinations temperatures of LUSI mud on the compressive strength of geopolymer mortar. Three different calcinations temperatures were investigated, i.e. 700, 800 and 900°C for five hours duration. Characterization of the mud, both the original and the calcined ones, was performed by using X-ray Diffraction (XRD) and X-ray Fluoresence (XRF) analyses. The calcined LUSI mud was then employed as precursor for making geopolymer mortar, and tested for its 7-day compressive strength. It is found that calcinations at 800°C is the optimum calcinations temperature producing the highest compressive strength.

Pengaruh perceived service quality, perceived value, satisfaction dan image terhadap customer loyalty (studi kasus garuda indonesia)

Abstract: PT. Garuda Indonesia constitutes an owned airline that was one of the major players in the premium class airline industry in Indonesia. The subject that the writer observes is Consumer behavior, to the influence of perceived service quality and perceived value on customer loyalty with customer satisfaction and airline image of Garuda Indonesia with 200 customer Surabaya-Jakarta route, and vice versa. Analysis SEM Certainly explain the influence of perceived service quality, convenience, and catering will form the corporate image (Airline Image) and perceived value, which in turn affects customer satisfaction and loyalty Garuda Indonesia in the future. The purpose of recommendation writer is for PT. Garuda Indonesia flight airlines to evaluate and maintain the loyalty of its customers with quality service.

Characterization of LUSI Mud Volcano as Geopolymer Raw Material

Abstract: The mud of mud volcano samples were collected from an eruption site named ‘LUSI’ (Lumpur “mud” –Sidoarjo), East Java, Indonesia for characterization. Analysis showed that, the major constituents of mud are SiO2 and Al2O3 which are higher than those in fly ash. The particle of mud has a flake-shaped particle and the overall particle size is dominated by particles between 2.5µm – 25.0µm. The results of XRD shows that mud of mud volcano have a characteristic of structurally disordered compounds, and a set of peaks corresponding to minor crystalline phases such as quartz, feldspars, and kaolinite. FTIR adsorption bands of the raw material of mud have the chemical bonding between bands 1-5.

Factors influencing users satisfaction on e-learning systems

Abstract: User satisfaction has held a central role in an organization as one of the measurements for the success of service delivery. The objectives of this study are to evaluate user satisfaction and examine the association between user satisfaction and the qualities in the e-learning systems of Multionational Company. A theoretical framework is developed, through the integration of e-learning satisfaction (ELS) theory and global satisfaction theory. The analysis was organized from a set of data which involve 190 responses from end-users. The main finding confirms some degree of a positive association between user satisfaction and the qualities in the e-learning system.

Analisa pengaruh kualitas layanan terhadap loyalitas pelanggan di laundry 5Asec Surabaya

Abstract: In hospitality industry, customer loyalty is the measurement of the success of service industry. Customer will be more satisfy when we can fulfill their need more than what he expected. It’s depended to staff’s sincerity when they give the service. Also happened at Laundry 5Asec Surabaya that point the measurement of success of services to guests from guest comment. Customer loyalty that want to be got by laundry 5Asec Surabaya can be measured by distributing quesionaires which are filled by the customer. All the questions are connected with service quality of laundry 5Asec Surabaya from customer loyalty perception. The answers will be counted to find the number of customer loyalty. By knowing the connection of service quality and customer loyalty, laundry 5Asec Surabaya can understand the customer perception to sevice quality better and make the precise strategies for improving the workmanship in the future to get customer loyalty.

Analisis persepsi employee empowerment terhadap employee turnover intention di hotel x, kupang, nusa tenggara

Abstract: This research is going to analyze the influence of employee’s perception to the empowerment that has been done by the company towards employee turnover intention. Hotel X is one of the three stars hotels in Kupang, Nusa Tenggara Timur that is having the employee turnover problem. Based on the analysis, employee empowerment perception simultaneously gives influence on the employee turnover intention. However, out of the seven variables of employee empowerment, there are only five variables which significantly influence the turnover intention; while the other two variables do not give a significant influence on the turnover intention. Moreover, meaningfulness is the most dominant variable in giving influence on the employee turnover intention.

Pengaruh atribut supermarket terhadap motif belanja hedonik motif belanja utilitarian dan loyalitas konsumen

Abstract: Attributes Supermarket stimulate the motive shopper to buying product, the motive Consuming and buying motives are classified into Hedonic and utilitarian. The fulfilness of hedonic and utilitarian motives lead to shoppers’ loyalty to the supermarket. The purpose of the study is to review the theory of Stimulus Organism Response addressed by MehrabianRussel, the concept of shopping motive developed by Baker and Donovan, and the concept of motive shopping Hedonic by Arnold Reynold. It was Empirical study on Big Supermarket in Surabaya.The Human behavior response and perceptionalanswers as well as concerned with inter variable effects through hypothesis tests by means of SEM analysis. The maximum likelihood estimation was derived from 200 respondents. The result s of the study showed that atribute supermarket significanly affected motive Hedonic and motive Utilitarian and loyalty. The empirical findings from the study showed to motive Hedonic morestrongth impact than motive utilitarian.

Technical Efficiency of Indonesian Commercial Banks: An Application of Two-Stage DEA

Abstract: This paper uses data envelopment analysis (DEA) to investigate the technical efficiency of the Indonesian commercial banks over the period 2004-2009 using intermediation approach. The analysis is conducted based on common frontier of duration of study and ownership of the banks, namely state-owned banks and private banks. Then Tobit regression model is used to examine the influence of internal factors as bank characteristics to efficiency scores. The results of DEA show that Indonesian commercial banks could improve their technical efficiency by 10.5% on average and the scale inefficiency is dominating over pure technical inefficiency. The commercial state-owned banks are showing perfect efficiency during the period of study, and proven to be more efficient compared to the commercial private banks. Finally Tobit regression is revealing that higher asset scale and liquidity risk increase the efficiency of the bank, while the profitability is on the contrary.

Improving Surface Durability of High Volume Fly Ash Concrete with Application of Alkali Solution

Abstract: This study aims to determine whether the surface durability of high volume fly ash (HVFA) concrete can be improved by applying alkali solution on its hardened surface. Concentrations of alkali solution and methods of application were studied on several w/cm ratios and replacement percentage of fly ash in concrete mixture proportion to investigate the durability performance. Durability tests conducted were accelerated sulfuric acid attack and ion chloride penetration to investigate the improved durability of HVFA concrete. From the results, it was shown that applying alkali solution on the surface of HVFA concrete can increase its durability performance. The different w/cm ratio and the percentage of fly ash used affect the increase in durability performance. The optimum alkali solution concentration and method of application need further research to determine their effectivity.

Persepsi konsumen terhadap makanan organik di surabaya

Abstract: The aim of this paper is to examine consumers’ perception in Surabaya toward organic food. This paper used quantitative descriptive method with 400 respondents using judgemental sampling techinique. Consumers’ perception toward organic food is reffered to the perception toward health, quality, price, friendly environment, and also food safety. The findings show that consumers in Surabaya have the highest perception that organic food is good for health because it can keep and increase body immune and also have higher nutrition.

Reviews on the Properties of Aggregates made with or without Geopolymerisation Method

Abstract: Aggregates are popular for use in concrete and lightweight concrete applications. Recent research shows that the by-product materials such as fly ash can be used as raw material in producing aggregates and lightweight aggregates. The usage of this material can improve the quality of the aggregates produced compared to conventional in term of structurally strong, physically stable, durable, and environmentally inert. This paper summarized the process and mechanical testing on the fly ash aggregates and lightweight aggregates to be used in concrete.

The morphological framework of the chinese and the european districts in surabaya, 1787-2005

Abstract: Recently, the phenomena of economic boom during the 1990s have led to the physical restructuring within the old centre of Surabaya. The changes is inevitable, thus the real issue is how to find the elements of persistent, constraining development to some degree that could be applied to influence future development. The objective of the research is to understand the impact of intervention, and to find the typo-morphological framework in the European and the Chinese quarters, from 1787 to 2005 for future development. A synchronic and a diachronic method is applied to understand the old town centre historical development, and the relationship between building type and urban fabric. The result shows three different degrees of persistent. The town plan of the Chinese and the European districts show a notable persistence. However the land utilization is less persistent especially in the European district such as the first and the second city wall were replaced by roads, and the first and the second fort were replaced by open space and residential uses. Finally, the buildings fabric shows a drastic change such as most of the nineteenth century Indische buildings have been replaced by the 1920s modern buildings.

Influence of Heat Treatment Temperature, Particle Fineness and Replacement Ratio of Sidoarjo Mud as Pozzolanic Materia

Abstract: The potential of treated Sidoarjo Mud as pozzolanic material has been investigated previously with positive results by applying heat treatment by burning it at high temperature. This study focusses on the influence of heating temperature, particle fineness or nominal size and cement replacement ratio of treated Sidoarjo mud in mortar. The treated Sidoarjo mud was characterized by a series of test of Thermal gravimetric Analysis (TGA), X-Ray Diffraction (XRD) and X-Ray Fluorescence (XRF). The heating temperature variation applied were at 500, 600, 700, and 800°C for two hours, and oven dried but untreated sample for comparison. The particle sizes were varied by sieving passing size 600-150, 150-75, and <75I¼m, while the percentage of cement replacement ratio was of 10, 20, and 30 by mass. The results show that the burned mud at 600°C, fineness <75µm, and replacement ratio 10 produce highest compressive strength. Heating the mud at 500-800°C would make it become pozzolanic whereas the unburned mud is not eligible to be used as pozzolanic material

Media dan politik citra dalam politik indonesia kontemporer

Abstract: The role of media in dinamics of Contemporary Indonesia Politic is slightly changing. Media control toward public opinion lets media become a tool for image creation and contestation in politic. The esence of politic have been reduced, on the other side the image of candidate become strategic isue beyond party program, vision and mision of the candidate. In political image, media change the candidate to be a package product adjusted to market taste instead of placing him as a political figure. Moreover, media represent constituent as political target market that can be influenced through public relations, marketing and ads strategies. Political image is also played by media within news, especially those which related to authorized power and capitalists. The win of candidate is determined by his soft skill in playing political image through the media.

Komparasi Destination Branding dalam Official Website Negara Singapura-Malaysia-Indonesia

Abstract: High profit income has attracted South Asian countries to compete in the fields of tourism marketing. Destination branding as a differentiating factor is an alternative approach in marketing communication. The purpose of this research is to make a comparison study of destination branding application in Singapore's, Malaysia's and Indonesia's tourism official websites. Destination branding in websites as part of promotion campaigns is a strategy used by each country to promote tourism to consumers worldwide. This research uses qualitative method, and involves experts in the fields of Information Technology (IT) and Visual Communication Design. Each website's elements contributes in the success of a country's destination branding and influences its brand image.

Pengaruh Sistem Manajemen Mutu Iso Terhadap Kinerja Karyawan Melalui Budaya Kualitas Perusahaan (Studi Kasus PT. Otsuka Indonesia Malang)

Abstract: Research about the effect of the Quality Management System ISO upon employee's performance through quality corporate culture can be seen from three dimensions. The three dimensions are ISO 9001 certification planning, corporate commitment and procedure implementation. With PT. Otsuka Indonesia Malang as the object and 110 randomly chosen employees as the respondent in collecting the data, this research found the result. According to the employees, ISO 9001 certification planning, corporate commitment, and procedure implementation have been running well. It also gives the significant positive effects upon quality corporate culture. Furthermore, the quality culture also gives the significant positive effects toward employee's performance. However, employees still have perception that quality culture is not too strong because of the empowerment and involvement as well as quality improvement team work which have not run optimally.

Haruki Murakami’s Deconstructive Reading of the Myth of Johnnie Walker and Colonel Sanders in Kafka on the Shore

Abstract: This study aims to analyze how Haruki Murakami reads the real icons of Johnnie Walker and Colonel Sanders in Kafka on the Shore deconstructively. First, we will focus on the signification process of the icon, which are to a great extent molded by advertisements, and then on the deconstruction of their signifieds. For the purpose, we will apply Barthes’ idea of myth. We are also interested in revealing how Murakami constructs Johnnie Walker and Colonel Sanders to be characters in the novel. The analysis shows that the construction of the icons through advertisements leads to the creation of their mtyhs, and then Murakami reads them deconstructively to be opposite signifieds.

Pendekatan Analisis Data Menggunakan NVivo-software untuk Penelitian Desain Logo Museum Nasional Jakarta

Abstract: Qualitative data analysis can be an exhausting, tough, and time-consuming work because the data obtained is so numerous, varied, and unstructured. However, this problem has been resolved by using computer-assisted qualitative data analysis software (CAQDAS). CAQDAS can help researchers to save, organize, explore data easily, and reduce the risk of damaging the raw data. In this article, the writer will explain about how to apply a quite popular CAQDAS application, NVivo, in the research of logo design of Museum Nasional Jakarta.

Ductility of a 60-Story Shearwall Frame-Belt Truss (Virtual Outrigger) Building

Abstract: Researches have been conducted to study Shearwall-frame combined with belt truss as structural system (SFBT), in which the post-elastic behavior and ductility of this structural system are explored A 60-story SFBT building, with a ductility set equal to 375 (value for fully ductile cantilever wall) is considered The Elastic Response Spectrum used for design is taken from Zone 2 of Indonesian Seismic Map Capacity design method according to Indonesian Concrete Code is employed The seismic performance is analyzed using static non-linear push-over analysis and dynamic non-linear time-history analysis Spectrum consistent ground motions of the May 18, 1940 El-Centro earthquake N-S components scaled to maximum accelerations of various return periods (50, 200, and 500 years) are used for analysis The results of this study show that plastic hinges mainly developed in beams above the truss, columns below the truss, and bottom levels of the wall The building shows no indication of structural instability

Experimental Study on the Propagation of a Pulsed Jet

Abstract: A preceding striking finding in an unsteady jet indicated that the jet departed from its linear trajectory after propagating some downstream locations from its nozzle exit region. In this paper, the propagation of an unsteady jet was experimentally studied. A hot-wire anemometer was used to sample the intermittent- turbulent flow. During the preliminary measurements, the jet was generated from a round nozzle with a varied pulsing frequency and constant mass flow rate. The present results show that the pulsed jet is axisymmetric. Unlike the earlier finding the jet follows a straight line trajectory to propagate further downstream. The flow field of the jet demonstrates the existence of two distinct regions, as found earlier, but it heavily relies on the level of pulsing frequency imposed on the jet. The steady jet part of the jet departs from a self-preserving steady jet having a greater value of aggregate turbulence intensity of around 35% of the mean centerline-axial velocity than that of a self-preserving steady jet. Along 50 diameters downstream, the pulsed jet spreading rate is found to be higher than that of a steady counterpart.

Application of Prefabricated Vertical Drain in Soil Improvement

Abstract: Although the use of Prefabricated Vertical Drain (PVD) in soil improvement is not new, this paper is interesting since it gives the full spectrum from preliminary design stage; trial embankment and pilot test to final soil improvement. The final installation of the PVD was based on the soil investigation report and the results of instrumentation monitoring. Finally, using back analysis, vertical and horizontal coefficients of consolidation and compression index can be determined, which can be applied to predict a more accurate prediction of settlement.

Analisa kualitas layanan bisnis makanan dan minuman di surabaya ditinjau dari derajat pemenuhan kepuasan konsumen

Abstract: Food and beverages industries in Surabaya have grown in the last few years. Businessmen have tried hard to deliver the best service they have to their customers in order to satisfy them. This research is done to find out the service quality of food and beverages industries in Surabaya using a quantitative descriptive approach. Service quality is measured by comparing the actual service with the expected service to find Customer Satisfaction Index (CSI). CSI shows that food and beverages industries in Surabaya have already been able to deliver their best service quality to their customers. Hopefully this research is beneficial for the related industries because it can also serve as their feedback to understand their customers better and improve their service quality when needed.