Master Tezleri

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An analysis of gamers' satisfaction levels: The dualities of digital and non-digital games
(Izmir Institute of Technology, 2015-12) Danış, Semih; Talu, Nilüfer
Along the history of human being, play activities and playing games have always been necessary practices as integral parts of daily life. In theoretical writings, the functions and meanings of play/game have been examined with the basic terms as pleasure, social interaction, self-proving, self-expression, education, simulation, etc. The rapid development of technology changed the daily life practices of ordinary people including play activities. The more computers became the most interacted objects in daily life, the more digital games are preferred according to non-digital games. The individuals survive in their daily lives/works/routines using technological products so they have the tendency to play computer games in their spare times. So their behaviors and identities are determined by this digital culture. The study criticizes that digital games/tools are designed as consumption products rather than focusing on basic satisfaction criteria concerning to play activities. For this reason, the study aims to understand the players’ basic needs in relevance of their daily life practices along with the dualities of digital and non-digital gaming. Semi-structured interviews are realized with a group of working young adults who are named as play lovers. The texts of interviews are interpreted as content analysis in this context.
Analysis of graphical user interface design in the context of human-computer interaction (with a case study on oven control panel)
(Izmir Institute of Technology, 2005) İlhan, Özlem; Erkarslan, Önder
In this era that the popularity of digital products has risen, computer and its tools affect every part of our lives. New technologies provide extraordinary powers to those people who master them. Digital products and their graphical user interfaces are still new technologies that are being rapidly disseminated. Human performance in the use of digital product will remain a rapidly expanding research and development topic in the coming decades. For this reason, theimportance of interaction between digital product and user should be considered.The term .Graphical user interface. is the layer where the digital productcommunicated with human and human communicated with digital product. A well-designed product can fail with an unsuccessful interface. Conversely, a product has not good design values can become successful with its well-designed interface. To get best interaction between digital product and user, the graphical interface design itself has some rudimentary design values like user-friendliness, usability, easy to learn, etc.At an individual level, user interfaces change many people.s lives. For instance, At an individual level, user interfaces change many people.s lives. For instance, and technicians can manipulate their job more safely. Some changes, however, are disruptive; too often, users must cope with frustration, fear, and failure when they encounter excessive complexity, incomprehensible terminology, or chaotic layouts.Designers are exploring how best to organize information graphically. They are developing query languages and visually attractive facilities. Techniques such as direct manipulation, telepresence, and virtual realities may change the ways that we interact with and think about digital products. Consequently, the goal of making the user's quality of life better is important to keep in mind.In this research, from the point of an industrial designer.s view, the subject matter .Graphical user interface design., and its all interaction rules with user are evaluated. In terms of design language, which has the ability of understand the user behavior, it puts the subject matter on the agenda to explore recipe of a successful product.
An analytical surver on customization at modular systems in the context of industrial design
(Izmir Institute of Technology, 2006) Tezcanlı, Eda; Seçkin, Yavuz
Enterprises in all branches of industry are being required to become more user focused, yet, at the same time, increasing competitive pressure dictates that costs must also continue to decrease. Mass customization and modularity are strategies developed to address this challenge by producing goods and services meeting individual customer's needs with near mass production efficiency. However, while mass customization and modular systems have already been discussed in the literature, reports on practical implementation of the principles of mass customization in businesses can be found only within the last years. It is a challenge of manufacturing to produce variety of products with limited resources. As corporations strive to rationalize their manufacturing facilities and to produce a large variety of products at lower cost, modularity is becoming a focus of attention. Modular products and reconfigurable processes are crucial to agile manufacturing and provide a way to produce a variety of products that satisfy various customer requirements in time. This modular approach promises the benefits of high volume production (that arises from producing standard modules) and at the same time, the ability to produce a wide variety of products that are customized for individual customers. Such modular product design has been stated as being a goal of good design. Mass Customization target is the transformation of knowledge into "new" products or services, thus customizing and adapting first knowledge then the product itself. Customizing knowledge happens through instantiation and adaptation of design prototypes of the products or the component to fit the individual needs of the customer. This thesis. emphasis is placed on mass customization and modularity which can be seen as key strategies for making firms more customer centric. Furthermore, provide an introduction into principles, concepts, and demarcations, for mass customization and modularity. As the case study Aye Birsel.s resolve model for Herman Miller is a very good example for the relationship between mass customization and modularity.
An analytical survey on the role of packaging in ındustrial design
(Izmir Institute of Technology, 2000) Göktepe, Yankı; Seçkin, Yavuz
In this,packaging design is studicd from the industrial designer's point of view.One of the main purpose of this thesis is to show importance that packaging has various aspects.and analytical researchis used to indicate this aspects.Chapter 1, will include; analyzing the packaging from point of consumer society and graphic aplications.Packaging will be shown as a communication tool and understanding for consumers and also their attitudes, beliefs, expectations and identity through their patterns.In chapter 2, material and production techniques are considered as a unavoidabled part of the total packaging. Four main group of materials are mentioned in this study namely, (1) paper and board, (2) flexible material, (3) plastic, (4) glass, (5) metal and they are supported with projects and images.In chapter 3, environmental impact which is one of the role of packaging is analayzed.Environmental impact has to be considered to cope with reuse, reduce, recycle, disposal and waste in packaging process.Packaging designers should try to avoid or minimise the use of any materials that are damaging to health or to the environment during protection, use and disposal.Finally, the thesis include a case study stress ball which is designed by taking into consideration of packaging design context.Keyword: Packaging, consumption, graphic applications, material, production tecniques, environment, recycling.
Application of grounded theory for concept analysis in new product development processes
(Izmir Institute of Technology, 2006) Şen, Alper; Özcan, A. Can
There is always a gap between analyzing the data and drawing the charts in relati with these data. During the development of new products, there comments on data are having vital importance. The more data collected to be specified, the more success gained to lead to a breakthrough. By stating the correct data, the project of developing new products under appropriate concepts are accomplished. In order to apply the data correctly, these data are driven by some techniques. In this study, one of these techniques, Grounded Theory is chosen to be examined according to basic examples. By the assistance of these examples, the theory is clarified. In order to be more precise, a case study is established and detailed with the data of developing a new product with a novel concept.
Applying product design methods to medical device design with a case study on home care devices
(Izmir Institute of Technology, 2004) Çetin, Aslı; Seçkin, Yavuz
Medical device design is one of the most important and most promising fields of industrial design. Medical devices, which were once designed by doctors, technicians and other people, who usually use such devices, have become insufficient in meeting the needs of today.s. In this respect, design of such devices and methods, which are used in the design process, comes away as main topics, which have to be carefully undertaken.Product design methods have the capacity of solving the problems of medical device design field, as they have in many other fields. In this study, the ways of applying these methods into the medical device design process, especially in home care medical device design, are going to be examined.
Assessment of lighting performance of PVC and PMMA materials in office spaces in terms of visual comfort
(Izmir Institute of Technology, 2006) Öztürk, Müge; Ergül, Emre
This research tests the plastic materials which can provide properly diffused illumination level and have smooth transmittance performance. Among these materials, two of them, PVC (polyvinylchloride) and PMMA (polymethylmethacrylate) sheets are evaluated, compared with each other and application possibilities. Besides, one of most important evaluation criteria for efficient lighting in office spaces; transmission property of these materials is empirically tested in laboratory in the scope of this study. One of these, PMMA is produced on commercial purpose in Turkey and used with its well known name; Plexiglas and the other one; Barrisol is an officially registered trademark of PVC translucent strech sample used in test. This study is gathered by means of searching lighting literature, rather restricting the data about two specific plastic based materials used in offices and experimenting the transmission characteristics of plexiglas and Barrisol. Scientifically; transmitting and diffusing of a material are unattached properties and rather concerned with chemistry. But there is a measured certainity that Plexiglas has %92 and Barrisol %73 percentage of transmission value. The results of test also supports that; transmission percentage of plexiglas sample is higher than Barrisol. It is reached to the conclusion that; when light directly comes down on a workplane whithout being regularly dispersed, it will tire viewer.s eyes and deteriorate visual comfort, negatively affecting productivity in offices.
Augmented reality-based model-mediated teleoperation: A mobile telerobot case study
(Izmir Institute of Technology, 2019-07) Kirişci, Nihat Çağhan; Dede, Mehmet İsmet Can
Teleoperation is defined as operating a robot in a remote environment. Teleoperation utilizes the strength and dexterity of robots and the interpretation and problem solving skills of humans. In a teleoperation system, the robot to be controlled is referred as the slave. The master is a device that the human operator interacts with to send commands to the slave or receive feedback from the slave environment such as haptic or audio. However, teleoperation of a robot in an unknown environment solely based on haptic and visual feedback is a demanding task. The effects of time delay in communication channels makes completing this task even more challenging. Model-Mediated Teleoperation (MMT) aims to solve this problem by creating a virtual model of the slave robot and the environment. This virtual model receives commands from the master and returns haptic feedback just as the real slave robot is interacting with the environment, effectively with no delay. However, without actually knowing where the position of the virtual robot corresponds in the real environment, it is still challenging to carry out the task. In this project, a novel augmented reality based method is proposed to render the virtual robot into the real life live video feed. Integration of the non-delayed robot into the real environment intends to solve this problem by enhancing the perception of the user.
Boundary value problems for the laplace equation using integral equation approach
(Izmir Institute of Technology, 2016-07) Özdemir, Gazi; Ivanyshyn Yaman, Olha
The main goal of this thesis is to solve numerically the exterior and interior Robin boundary value problems via a boundary integral equation method, which has an advantage of decreasing the computational dimension of the problem. Representing the solution by a layer potential, we reduce the dierential problem in a bounded and an unbounded domain to the Fredholm integral equation of the second kind over the boundary. In the case of exterior problem in two dimension, the fundamental solution to the Laplace equation is logarithmic, and hence additional condition or modification has to be applied that keeps the solution bounded in the unbounded domain. Instead of using a classical singlelayer potential and enforcing a condition on the unknown density we propose a modified single layer potential approach. After investigating uniqueness and existence of solution to the obtained integral equations of second kind, we solve the equations numerically by the Nyström method. For the numerical integration of integral operators with continuous kernels the trigonometric quadratures on an equidistant mesh is used. For the numerical integration of weakly singular kernels we first splitt o the logarithmic singularity and apply a special quadrature rule for the improper integrals. The feasibility of the proposed methods, covergence order (super-algebraic for smooth data) is illustrated by numerical examples.
Call center as an epitome of communicative capitalism: Participatory Design as an empowering tool
(Izmir Institute of Technology, 2019-07) Kaya, Rabia Gülbike; Tunç Fox, Ayça
With the purpose of involving users in the design process, Participatory Design offers participants a democratic process in which participants can express themselves by using their experiences, and notice their problems and capabilities thanks to the methods applied in the process. This study investigates the potential of a Participatory Design process whereby employees of a call center in Manisa participate. Inbound call agents, who work in call centers which are shaped by Communicative Capitalism, do not have an impact on anything except for the customers they communicate with. Moreover, the fact that they do not have a say in their working environment, they are under constant surveillance and decision concerning them are made by others, shows that inbound call agents are in need of empowerment. This study explores the potential of Participatory Design as a tool for empowering participants rather than providing a design proposal. To this end, a Participatory Design process was conducted with the inbound call agents who need to be empowered. According to the findings obtained at the end of the study; the participants identified the problems they had at work and realized that they could find solutions to these problems by exchanging ideas with each other. At the end of the process, Participatory Design enabled participants to become aware of their capabilities and empowerments in the field they are experienced in.
Comparative analysis of materials in recreational boat design: fiber reinforced plastic boat in serial production
(Izmir Institute of Technology, 2005) Gölpınar, Serden; Erkarslan, Önder
This study aims to reveal the suitable boat construction material for serial production and the innovative design opportunities for the competition in the boat market in which the manufacturers and designers have to differentiate themselves by innovative designs, attractive products and new production techniques.Although the building material, from which the vessel is to be built, has the most important affect on design and production, the material choice and construction methods are first determined in design stage. Thus as the second chapter after introduction, the design stage is presented, which affect product sale more than the others. This chapter is formed by introducing the vessel characteristic, design requirements, design process and design methods, which form the boat. In addition, the computer.s role, which brings a lot of easiness, cost and time advantage to area of boat design, is mentioned.The materials used for boat construction are important for design process. So during the third chapter the materials such as steel, ferrocement, aluminium, wood and composite materials are discussed. By the help of this discussion, a designer can get an idea for the suitable material for his her design and by the help of the comparison graphics of materials he she can get a quick idea about the differences of the materials.Materials used in boat construction have taken up within the framework of a comparison consisting of material.s mechanical characteristics, resistance to different affects, design opportunities and cost. As the result of material comparison, FRP (fiber reinforced plastic) recreational boat construction methods, which are conventional method such as hand lamination and spray lamination and more industrialized techniques such as vacuum bag and SMC etc., are presented in chapter four. In addition, future trends of FRP boat building and computer application (CNC milling), which give the advantages such as time labor and cost save, are presented in chapter four. Finally with this research someone as a designer or manufacturer can create more effective products, which cover the consumer demand, in considering design process, material characteristic and production techniques mentioned in the thesis.
The comparative performance analysis of lattice based NTRU cryptosystem with other asymmetrical cryptosystems
(Izmir Institute of Technology, 2007) Mersin, Ali; Koltuksuz, Ahmet Hasan
Current popular asymmetrical cryptosystems are based on hardness of number theoretic problems. In the future, these problems may become practically solvable with the improvements of processing power, the development of quantum computation and distributed computation. So the need for new cryptosystems which are not based on these problems has risen. Researches on hardness of lattice problems have brought a new candidate for asymmetrical cryptography: Lattice Based Cryptography. NTRU is one of these cryptosystems. For practical use, the actual performance results of NTRU with respect to current asymmetrical cryptosystems should be known. This thesis is developed based on this purpose.
A comparative study on design of Turkish coffee brewing machines for self-service: "Telve", "Kahwe" And "Gondol"
(Izmir Institute of Technology, 2002) Başarır, Selen; Erkarslan, Önder
In the last decades, for the traditional Turkish coffee brewing method, which has a history of five hundred years, new gadgets are being designed. These machines, which are the rivals of the ibrik, are designed to meet the .need of speed., which is the requirement of the era. Like the other industrial products, they are going to be developed according to the customer requirements. They are going to be successful according to the level of the customer satisfaction they provide. In this study which comprises five chapters, in the second chapter, the coffee plant, coffee processing, the history of coffee and the coffee brewing methods are mentioned. In the third chapter, the development of western and oriental coffee brewing machines in the history are mentioned. In the fourth chapter, three of the different types of Turkish coffee brewing machines are chosen from the market, and these machines are examined according to the level of their customer requirement satisfaction by means of Quality Function Deployment method. In the fifth chapter, by means of the data obtained from this examination, suggestions are made about which specifications of the products should be developed in the next generation designs of the products.
A comparison of centrality measures for evaluating the project coordination performance
(Izmir Institute of Technology, 2014-09) Timurcan, Pelin İpek; Doğan, Sevgi Zeynep
Evaluation of coordination performance in a project network requires reliable measures and monitoring methods for effective management. Recent literature includes studies addressing the relationship between coordinative activity and the configuration of communication networks. In these works, the role of network centrality is investigated through the basic standard centrality measures of degree, betweenness and closeness. Current social network analysis research emphasizes new formulations of centrality measures for robust structural analysis of project networks. This study presents a novel approach for measuring network centrality using the concept of information centrality. It is based on the idea that all paths carry information. The significance of information centrality values for the actors in two major projects of Enron Corporation is investigated. There are three major findings from these analyses. First finding suggests that highly centralized actors show more coordination. Second finding suggests that information centrality is the most potent predictor for coordination in undirected networks. Third finding is that out-centrality measures are better predictors for coordination performance in directed networks. The implications of these findings have potentials for assessing the coordination performance in construction management research, and it is promising for the structural analysis of project communication networks.
Comparison of powder synthesis methods for the production of potassium sodium niobate (KNN)
(Izmir Institute of Technology, 2021-07) Pişkin, Cerem; Ahmetoğlu, Çekdar Vakıf; Adem, Umut; 01. Izmir Institute of Technology
Alkali niobate-based, i.e., potassium sodium niobate, KxNax-1NbO3 at x=0.5 (the composition at the morphotropic phase boundary (MPB)), based materials have been reported as promising lead-free piezoelectrics to be substituted with the most extensive lead-based, i.e., lead zirconate titanate (PZT) ones. In this thesis, KNN particles were obtained using three discrete powder synthesis routes: conventional solid-state reaction, hydrothermal synthesis, and sol-gel processing. The as-synthesized powders were characterized via several techniques to provide a comparative study and underline the difficulties upon KNN synthesis. In the conventional method, the phase pure K0.5Na0.5NbO3 powders were obtained at 850°C with 382 ∓ 68 nm particle size. Unfortunately, the process cannot be considered sustainable due to the high risk of non-perovskite impurity phase formations. Also, the results demonstrated that single phase KNN powder having the MPB composition could not be accomplished via a one-step hydrothermal reaction process because of the inevitable formation of the second NaNbO3 phase. Instead, post-heat treatment of biphasic (K-rich (x>0.5) KNN and NaNbO3) samples lead to induction of sodium incorporation into the crystal lattice, and eventually, phase-pure KNN particles with high proximity (x=0.58) to MPB were achieved. The KNN powder with the smallest particle size (145 nm) was obtained using the sol-gel method at 500°C. However, the samples showed carbonate impurities resulting from the reaction of unreacted alkali cations (K+ and/or Na+) with the ambient CO2. Hence, the KNN samples needed to be stored under inert atmosphere to ensure purity.
Computer aided design program "Çizen" and designers interaction and efficiency analysis; development of intelligent interface suggestions
(Izmir Institute of Technology, 2020-01) Zengin Bintaş, Gül Çiçek; Erkarslan, Önder
Software is not only a rapidly developing and indispensable tool today but also the most prominent driving force of digital transformation. Thanks to the innovation studies carried out in the software of these programs, the productivity growth is achieved in the design processes, and the errors arising from the design could be reduced to a minimum. In Turkey, since 2010, working on CAD development have been initiated; the domestic and national program called “ÇİZEN,” has been developed for sheet metal forming design. In this study, new techniques and innovative methods were performed in the ÇİZEN program, which was developed and personalized specifically to a particular sector and then, User Experience Survey was conducted. The study aimed to design a simple and intelligent interface by clearly determining the needs and expectations of sheet metal designers and the user's program experience. Within the scope of this objective, user experience surveys were conducted with the participation of 14 users. In this context, the users were asked pre-configured and open-ended questions, and by giving the users specific tasks, the focus points in the program were revealed with heat maps through the Eye Tracker device. As a result of the finalization of pre-test studies and obtaining eye-tracking data, the final-test phase was initiated; and after the general opinions about the program were received, System Usability and Nonverbal Pictorial Scale research was conducted. The data obtained from the research results were interpreted, evaluated, and suggestions were developed under three main headings: productivity, simplicity/functionality, and interface.
Craft in contemporary design culture in Turkey: Silversmithing in Grand Bazaar
(Izmir Institute of Technology, 2017-07) Tarcan, Berilsu; Tunç Cox, Ayça
Many researchers have investigated and analysed specific craft traditions and their practice in Turkey. Traditional production techniques, craft and design of cultural objects and different handicrafts from Turkey have been important research subjects. However, definition of tradition, culture and craft have changed over time, and keeps changing. The influence of these elements on product design and how they shifted within time should be studied more extensively. This thesis explores one of the craft neighborhoods in Turkey and suggests new ways craft can be implemented into product design today. For this purpose, craft’s history and relation to design and technology is investigated. A part of the field study was conducted with students of industrial design at İstanbul Bilgi University, as a part of their 2nd year studio course; in which the students were paired with craftsmen in Kapalıçarşı area, one of the historic craft neighborhoods in İstanbul. A traditional craft from Turkey, silversmithing, is taken as an example and implemented into product design. Moreover, in-depth interviews were conducted with the silversmiths in the area, to question the situation of craft today, and outcomes were discussed in terms of how it can be related with product design.
A critical approach on "synergetic geometry" of Buckminster Fuller
(Izmir Institute of Technology, 2005) Dündar, Ali; Erkarslan, Önder
Synergetic Geometry is a new geometry apprehension that R. Buckminster Fuller constituted its theoretical and practical underpinnings. In fact, Synergetic Geometry was a consequence of an experienced process that was developed by Fuller in his four design products and finally, materialized in Geodesic Dome. This study will focus on Synergetic Geometry of Fuller, and its reflections and its development levels on his products.Fuller criticizes industrial design as being non-industrialized practice, and criticizes industrial designers as being pure interior and exterior decorators. On the contrary, Fuller describes industrial design as interdisciplinary profession. Thus, industrial design cannot be undertaken as decoration and ornament. It is a whole system that includes different constituents and sciences, and it has to be handled as a design science and industrialized practice, rather than non-industrialized practice. Seen from this vantage point, Fuller innovated to the profession of industrial design by his products and his design conceptions.The aims of this study are the analysis of the four experiences which were the milestones of the .Synergetic Geometry. that is the destination of the thought derived from a geometrical analogy; and, the process of materialisation of the Synergetic Geometry that is elaborated in the context of the conceptual tools of Fuller (complementarity, system and synergy, and tensegrity) which constituted the Synergetic Geometry thought. Despite the fact that the four experiences of Fuller (Dymaxion Bathroom, Dymaxion Car, Dymaxion Deployment Unit, Wichita House) were marketable.easily convertible to cash.and proper to mass-production; they remained avant-garde in terms of becoming threshold products for further developments. For that reason, this study will also concentrate on his four experiences from the point of view that their crucial roles in design history have to be emphasized.
Design activism in industrial design: A critical analysis of the main scolary discourse
(Izmir Institute of Technology, 2015-12) Çetin, Özgür Deniz; Tunç Cox, Ayça
Industrial design profession has developed continuingly throughout the twentieth century, cultivated, and became prevalent. Over the course of time, industrial design has also had some negative ramifications for people and the environment, caused by socio-economic and political developments such as industrialization and globalization. Nevertheless, industrial designers have not disregarded these developments, and their consequences, instead they have been searching to find some solutions to the negative outcomes within their own profession. This endeavour has created a concentrated thread of action, which can be defined as “design activism” as an aggregate term. The renowned examples of design activism discourse first appeared in the early 1970s. Passing through various phases, it has eventually become a major subject that attracts considerable attention from design profession. Design activism is commonly addressed as an approach or a viewpoint. However, this study postulates design activism as a movement; it has been influenced by social events and movements in conjunction with socio-economic and political developments and consequently, it has evolved into a movement within the industrial design profession. This study critically analyses design activism discourse over a group of publications which constitutes the core of the discourse, both in its historical context and cumulatively. The critical analysis of the discourse discloses the ideology of design activism, its relationship with other domains and subjects, its content and context, the objectives of design activism, and the course of action that is supposed to achieve the objectives. This analysis also allows me to identify the deficiencies of design activism movement. The study is concluded with a plausible roadmap which can be followed in the near future to achieve the objectives of design activism movement.
Design modification of a front window mechanism for the cabin of an earth moving machine
(Izmir Institute of Technology, 2017-07) Jovichikj, Radomir; Kiper, Gökhan
This thesis study investigates the front window mechanism used in an earth moving machinery. Since the mechanism is actuated by the operator, the required actuation force for the mechanism needs to be as minimum as possible. The problem of this thesis is defined by Turkey branch of Mecalac Company and the final test of this study are performed in their facility. First, the problem definition and aim of the study is presented. Furthermore, the literature review is also presented. Then, the current mechanism attached on the earth moving machinery is investigated. Firstly, kinematic analysis is performed in order to be able to perform the force analysis. Following that, using three different approaches (Newton-Euler approach, virtual work method and graphical approach), the static force analysis is done. The aim of this analysis to obtain the required actuation force, both for opening and closing the mechanism. By using three different approaches, the result obtained after each method are compared and confirmed. Furthermore, a simulation of the mechanism is prepared in MATLAB/Simulink® environment. This step provided a numerical simulation verification for the resulting actuation forces. Then the work carried out for the minimization of the actuation force is presented. By changing the parameters of the springs attached on the current mechanism, changing the link lengths of the mechanism and changing the application point of the actuation force, the change in the magnitude of the required actuation force is observed and minimized. Among all trials, only changing the spring position led to useful results. Finally, the test setup to measure the performance and experimentally verify the proposed solution is explained and the results are given. The results show that with the modified location of the spring, both of the maximum force requirements and the work requirements are lowered.

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