Дисертації з теми "Content upload"
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1
Aytekin, Tevfik. "A New Theory Of Content." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1138320/index.pdf.
Повний текст джерелаАнотація:
Naturalistic philosophers of meaning try to define the recalcitrant concept of reference in terms respected by the empirical science, such as causality or teleology. In this thesis, after a brief introduction to these trials is given, Fodors theory of content in terms of asymmetric dependence is examined in some depth. I claim that although this theory involves an important insight, it is an unsatisfactory attempt at reduction of the notion of reference. I develop a new theory of content, which does not have the defects of the analyses in terms of asymmetric dependence, and more successfully deals with notorious cases, such as pansemanticism and the possibility of misrepresentation.
2
Kirmemis, Oznur. "Openmore: A Content-based Movie Recommendation System." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609479/index.pdf.
Повний текст джерелаАнотація:
The tremendous growth of Web has made information overload problem increasingly serious. Users are often confused by huge amount of information available on the internet and they are faced with the problem of finding the most relevant information
that meets their needs. Recommender systems have proven to be an important solution approach to this problem. This thesis will present OPENMORE, a movie recommendation system, which is primarily based on content-based filtering technique. The distinctive point of this study lies in the methodology used to
construct and update user and item profiles and the optimizations used to fine-tune the constructed user models. The proposed system arranges movie content data as features of a set of dimension slots, where each feature is assigned a stable feature weight regardless of individual movies. These feature weights and the explicit feedbacks provided by the user are then used to construct the user profile, which is fine-tuned through a set of optimization mechanisms. Users are enabled to view their profile, update them and create multiple contexts where they can provide negative and positive feedback for the movies on the feature level.
3
Tekkaya, Gokhan. "Improving Interactive Classification Of Satellite Image Content." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608326/index.pdf.
Повний текст джерелаАнотація:
Interactive classifi
cation is an attractive alternative and complementary for automatic classi&
#64257
cation of satellite image content, since the subject is visual and there are not yet powerful computational features corresponding to the sought visual features. In this study, we improve our previous attempt by building a more stable software system with better capabilities for interactive classi&
#64257
cation of the content of satellite images. The system allows user to indicate a few number of image regions that contain a speci&
#64257
c geographical object, for example, a bridge, and to retrieve similar objects on the same satellite images. Retrieval process is iterative in the sense that user guides the classi&
#64257
cation procedure by interaction and visual observation of the results. The classi&
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cation procedure is based on one-class classi&
#64257
cation.
4
Gonul, Suat. "Enhancing Content Management Systems With Semantic Capabilities." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614567/index.pdf.
Повний текст джерелаАнотація:
Content Management Systems (CMS) generally store data in a way that the content is distributed among several relational database tables or stored in files as a whole without any distinctive characteristics. These storage mechanisms cannot provide the management of semantic information about the data. They lack semantic retrieval, search and browsing of the stored content. To enhance non-semantic CMSes with advanced semantic features, the semantics within the CMS itself and additional semantic information related with the actual managed content should also be taken into account. However, extracting implicit knowledge from the legacy CMSes, lifting to a semantic content management system environment and providing semantic operations on the content is a challenging task which includes adoption of several latest advancements in information extraction (IE), information retrieval (IR) and Semantic Web areas. In this study, we propose an integrative approach including automatic lifting of content from legacy systems, automatic annotation of data with the information retrieved from the Linked Open Data (LOD) cloud and several semantic operations on the content in terms of storage and search. We use a simple RDF path language to create custom, semantic indexes and filter annotations obtained from LOD cloud in a way that is eligible for specific use cases. Filtered annotations are materialized along with the actual content of document in dedicated indexes. This semantix indexing infrastructure allows semantically meaningful search facilities on top of it. We realize our approach in the scope of Apache Stanbol project, which is a subproject developed in the scope of IKS project, by focusing on document storage and retrival parts of it. We evaluate our approach in healthcare domain with different domain ontologies (SNOMED/CT, ART, RXNORM) in addition to DBpedia as parts of LOD cloud which are used annotate documents and content obtained from different health portals.
5
Taner, Serdar. "Image Classification For Content Based Indexing." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/2/1093269/index.pdf.
Повний текст джерелаАнотація:
As the size of image databases increases in time, the need for content based image indexing and retrieval become important. Image classification is a key to content based image indexing. In this thesis supervised learning with feed forward back propagation artificial neural networks is used for image classification. Low level features derived from the images are used to classify the images to interpret the high level features that yield semantics. Features are derived using detail histogram correlations obtained by Wavelet Transform, directional edge information obtained by Fourier Transform and color histogram correlations. An image database consisting of 357 color images of various sizes is used for training and testing the structure. The database is indexed into seven classes that represent scenery contents which are not mutually exclusive. The ground truth data is formed in a supervised fashion to be used in training the neural network and testing the performance. The performance of the structure is tested using leave one out method and comparing the simulation outputs with the ground truth data. Success, mean square error and the class recall rates are used as the performance measures. The performances of the derived features are compared with the color and texture descriptors of MPEG-7 using the structure designed. The results show that the performance of the method is comparable and better. This method of classification for content based image
indexing is a reliable and valid method for content based image indexing and retrieval, especially in scenery image indexing.
6
Erdal, Feride. "Web Market Analysis: Static, Dynamic And Content Evaluation." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614694/index.pdf.
Повний текст джерелаАнотація:
Importance of web services increases as the technology improves and the need for the challenging e-commerce strategies increases. This thesis focuses on web market analysis of web sites by evaluating from the perspectives of static, dynamic and content. Firstly, web site evaluation methods and web analytic tools are introduced. Then evaluation methodology is described from three perspectives. Finally, results obtained from the evaluation of 113 web sites are presented as well as their correlations.
7
Carkacioglu, Abdurrahman. "Texture Descriptors For Content-based Image Retrieval." Phd thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/4/1035534/index.pdf.
Повний текст джерелаАнотація:
Content Based Image Retrieval (CBIR) systems represent images in the database
by color, texture, and shape information. In this thesis, we concentrate on tex-
ture features and introduce a new generic texture descriptor, namely, Statistical
Analysis of Structural Information (SASI). Moreover, in order to increase the re-
trieval rates of a CBIR system, we propose a new method that can also adapt an
image retrieval system into a con¯gurable one without changing the underlying feature extraction mechanism and the similarity function. SASI is based on statistics of clique autocorrelation coe±
cients, calculated over structuring windows. SASI de¯
nes a set of clique windows to extract and measure various structural properties of texture by using a spatial multi- resolution method. Experimental results, performed on various image databases, indicate that SASI is more successful then the Gabor Filter descriptors in cap- turing small granularities and discontinuities such as sharp corners and abrupt changes. Due to the °
exibility in designing the clique windows, SASI reaches higher average retrieval rates compared to Gabor Filter descriptors. However, the price of this performance is increased computational complexity. Since, retrieving of similar images of a given query image is a subjective task, it is desirable that retrieval mechanism should be con¯
gurable by the user. In the proposed method, basically, original feature space of a content-based retrieval system is nonlinearly transformed into a new space, where the distance between the feature vectors is adjusted by learning. The transformation is realized by Arti¯
cial Neural Network architecture. A cost function is de¯
ned for learning and optimized by simulated annealing method. Experiments are done on the texture image retrieval system, which use SASI and Gabor Filter features. The results indicate that con¯
gured image retrieval system is signi¯
cantly better than the original system.
8
Kavakli, Hamdi. "A Course-content Management System Development And Its Usability Test." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605405/index.pdf.
Повний текст джерелаАнотація:
Effectiveness and usefullness among the important factors that affect success of online learning environments. During this study, a course-content management system developed regarding effectivity and usability related concerns. One major aim of this study is to develop effective and usable system.
In this study, a course-content management system designed and developed under the light of previous researches. In the design phase, effective design strategies and characteristics of effective and usable learning systems were explored, and system was designed considering these strategies. Then, development phase applied. After system developed, usability techniques was explored, and heuristic evaluation method was choosed as a usability method to measure usability of the system.
During the study, modified version of a checklist that was prepared considering usability heuristics. Applied checklist contains total 108 questions under 13 heuristics (major usability problem). Heuristic evaluation is an expert review method. Therefore, this study should have been evaluated by experts. 8 experts enrolled in this study. All experts are either Phd or graduate students at instructional technology departments and they have enrolled in web-based studies. They investigated the usability of the course-content management system according to the usability related criterias on the checklist.
When test results were considered, a course-contentmanagement system developed during this study was found usable. Results of this study may enlighten the way of future studies.
9
Dogan, Ebru. "Content-based Audio Management And Retrieval System For News Broadcasts." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12611018/index.pdf.
Повний текст джерелаАнотація:
The audio signals can provide rich semantic cues for analyzing multimedia content, so audio information has been recently used for content-based multimedia indexing and retrieval. Due to growing amount of audio data, demand for efficient retrieval techniques is increasing. In this thesis work, we propose a complete, scalable and extensible audio based content management and retrieval system for news broadcasts. The proposed system considers classification, segmentation, analysis and retrieval of an audio stream. In the sound classification and segmentation stage, a sound stream is segmented by classifying each sub segment into silence, pure speech, music, environmental sound, speech over music, and speech over environmental sound in multiple steps. Support Vector Machines and Hidden Markov Models are employed for classification and these models are trained by using different sets of MPEG-7 features. In the analysis and retrieval stage, two alternatives exist for users to query audio data. The first of these isolates user from main acoustic classes by providing semantic domain based fuzzy classes. The latter offers users to query audio by giving an audio sample in order to find out the similar segments or by requesting expressive summary of the content directly. Additionally, a series of tests was conducted on audio tracks of TRECVID news broadcasts to evaluate the performance of the proposed solution.
10
Sarihan, Isik. "Mental Content And Mentalistic Causal Explanation: A Case Against Externalism." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12612726/index.pdf.
Повний текст джерелаАнотація:
This thesis presents a defense of the view that externalism cannot be a theoretical basis of a mentalistic causal-explanatory science, even though such a theoretical basis is implicitly or explicitly adopted by many cognitive scientists. Externalism is a theory in philosophy of mind which states that mental properties are relations between the core realizers of an individual&rsquos mental states (such as brain states) and certain things that exist outside those realizers (such as what the content of a mental state corresponds to in the actual world.) After clarifications regarding the term &ldquo
externalism&rdquo
and reviewing the history and the various forms of the externalist theory, it is argued that the properties offered by externalist theories as mental properties have no causal influence on behavior, and therefore cannot causally explain it. The argument is largely based on a method of comparing the causal powers of entities which are identical in all respects except their mental properties (as construed by externalism), and the conclusions are supported by metaphysical reflections on causation, dispositions, relational properties and historical properties. Objections to the defended view are considered and refuted. The thesis is written in the style of modern analytic philosophy.
11
Bilal, Tahir. "Content Based Packet Filtering In Linux Kernel Using Deterministic Finite Automata." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613710/index.pdf.
Повний текст джерелаАнотація:
In this thesis, we present a content based packet filtering Architecture in Linux using Deterministic Finite Automata and iptables framework. New generation firewalls and intrusion detection systems not only filter or inspect network packets according to their header fields but also take into account the content of payload. These systems use a set of signatures in the form of regular expressions or plain strings to scan network packets. This scanning phase is a CPU intensive task which may degrade network performance. Currently, the Linux kernel firewall scans network packets separately for each signature in the signature set provided by the user. This approach constitutes a considerable bottleneck to network performance. We implement a content based packet filtering architecture and a multiple string matching extension for the Linux kernel firewall that matches all signatures at once, and show that we are able to filter network traffic by consuming constant bandwidth regardless of the number of signatures. Furthermore, we show that we can do packet filtering in multi-gigabit rates.
12
Soysal, Deniz. "Conceptual Background Of Truth Content Of Art In Gadamer." Phd thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609689/index.pdf.
Повний текст джерелаАнотація:
The following dissertation is an endeavor to put forward the conceptual background of Gadamer&rsquos assertion in Truth and Method that art has a truth value. This conceptual background includes many important concepts which are indispensable in understanding the assertion that art has a truth value. Second chapter is mainly concerned with Bildung and sensus communis. Bildung describes the nature of knowledge which flourishes in the character of the person and which changes that person by penetrating the personality of him. Sensus communis describes the relationship of truth with the power of persuasion and the power of making right choices in social life. Taste, on the other hand, not only accompanies us when we are fulfilling our most basic needs in life and also shows itself in all of our moral decisions. In that sense, a developed taste is very effective in directing us to the truth. The third chapter offers an analysis of Gadamer&rsquo
s critique of Kant&rsquo
s aesthetics revolving around the concepts of judgment, taste, genius and Erlebnis. For Gadamer, Kant has subjectivized aesthetics. This subjectivization has two sides. Firstly, Kant argues that the experience of beauty does not give us any knowledge about the beautiful object. That is to say, Kant insists that aesthetic experience does not contain any cognitive element, because he believes that the only source of truth and knowledge is science. Secondly subjectivization means that Kant reduced art and beauty only to the experience of it
he talks only about experience of beauty, not about work of art itself at all. The forth chapter introduces the ontology of the work of art which is elaborated mainly on concepts of play, representation, mimesis, total mediation, contemporaneity. When inquiring into the mode of being of play, Gadamer defends that the subject of the play is play itself and in the same way in the experience of art the subject is not the subjectivity of the person who experiences it but the work of art. In the last chapter history of hermeneutics is elaborated in order to find the proper place of Gadamer&rsquo
s constituting concepts in the general frame of hermeneutics.
13
Ozcan, Alper. "The Effect Of Sn Content And Isothermal Transformation Temperature On The Mechanical Properties Of Austempered Ductile Cast Iron." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1055359/index.pdf.
Повний текст джерелаАнотація:
In this study the effects of Sn content and isothermal transformation temperature on the ultimate tensile strength (UTS), elongation and hardness of austempered ductile cast iron (ADI) was investigated. To determine the possible effect of Sn on these properties the Sn content of standard GGG30, GGG40 and GGG50 materials were taken as reference, whose chemical compositions vary from 0,016 to 0,050% in terms of Sn. However the Sn content was increased to a maximum of 0,26% for investigating the effect of Sn on mechanical properties. The test specimens were obtained from standard 1-in Y-blocks and austenitized at 925oC for 1 hour and austempered at 350oC,375oC, 400oC and 420oC for 60 minutes in a salt bath.
Microstructural examination of the specimens were also done. To determine the amount of retained austenite of the specimens X-Ray analyses were used. As a result of the study The UTS increases up to 0,1% Sn and then levels off. A similar behavior is observed in the variation of hardness. Percent elongation decreases and falls to a minimum around 0,1% Sn, from this point on, a slight increase is observed. Strength and hardness increase while percent elongation decreases with decreasing temperatures.
14
Aluc, Gunes. "Design And Implementation Of An Ontology Extraction Framework And A Semantic Search Engine Over Jsr-170 Compliant Content Repositories." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610665/index.pdf.
Повний текст джерелаАнотація:
A Content Management System (CMS) is a software application for creating, publishing, editing and managing content. The future step in content management system development is building intelligence over existing content resources that are heterogeneous in nature. Intelligence collected at the knowledge base can later on be used for executing semantic queries. Expressing the relations among content resources with ontological formalisms is therefore the key to implementing such semantic features.
In this work, a methodology for the semantic lifting of JSR-170 compliant content repositories to ontologies is devised. The fact that in the worst case JSR-170 enforces no particular structural restrictions on the content model poses a technical challenge both for the initial build-up and further synchronization of the knowledge base. To address this problem, some recurring structural patterns in JSR-170 compliant content repositories are exploited. The value of the ontology extraction framework is assessed through a semantic search mechanism that is built on top of the extracted ontologies. The work in this thesis is complementary to the &ldquoInteractive Knowledge Stack for small to medium CMS/KMS providers (IKS)&rdquo
project funded by the EC (FP7-ICT-2007-3).
15
Arslan, Serdar. "An Xml Based Content-based Image Retrieval System With Mpeg-7 Descriptors." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605750/index.pdf.
Повний текст джерелаАнотація:
Recently, very large collections of images and videos have grown rapidly. In parallel with this growth, content-based retrieval and querying the indexed collections are required to access visual information. Three main components of the visual information are color, texture and shape. In this thesis, an XML based content-based image retrieval system is presented that combines three visual descriptors of MPEG-7 and measures similarity of images by applying a distance function. An XML database is used for storing these three descriptors. The system is also extended to support high dimensional indexing for efficient search and retrieval from its XML database. To do this, an index structure, called M-Tree, is implemented which uses weighted Euclidean distance function for similarity measure. Ordered Weighted Aggregation (OWA) operators are used to define the weights of the distance function and to combine three features&rsquodistance functions into one. The system supports nearest neighbor queries and three types of fuzzy queries
feature-based, image-based and color-based queries. Also it is shown through experimental results and analysis of retrieval effectiveness of querying that the content-based retrieval system is effective in terms of retrieval and scalability.
16
Celik, Cigdem. "An Mpeg-7 Video Database System For Content-based Management And Retrieval." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606679/index.pdf.
Повний текст джерелаАнотація:
A video data model that allows efficient and effective representation and querying of spatio-temporal properties of objects has been previously developed. The data model is focused on the semantic content of video streams. Objects, events, activities performed by objects are the main interests of the model. The model supports fuzzy spatial queries including querying spatial relationships between objects and querying the trajectories of objects. In this thesis, this work is used as a basis for the development of an XML-based video database system. This system is aimed to be compliant with the MPEG-7 Multimedia Description Schemes in order to obey a universal standard. The system is implemented using a native XML database management system. Query entrance facilities are enhanced via integrating an NLP interface.
17
Ozturk, Nesrin. "An Examination Of The Relationship Between Content Familiar Texts, Derived From Readers." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612215/index.pdf.
Повний текст джерелаАнотація:
This study aimed to examine the relationship of background knowledge in relation to topic interest and reading performance of English language learners at TOBB University of Economics and Technology. For that, a reading interest questionnaire and three reading comprehension tests, which were accompanied with a 2-item background &interest questionnaire, were developed by the researcher. These instruments were implemented on 75 English language learners studying at TOBB ETU Preparatory School. The results obtained from the instruments were analyzed through SPSS 15.0. In analyzing the data, descriptive statistics as average and standard deviation besides inferential statistics as one-way ANOVA and Spearman&rsquo
s correlation test were used. The results of the study revealed that there is a significant difference among the three reading performance scores of the language learners. Besides, the correlation of topic background knowledge and interest is highlighted for each of three reading comprehension tests, so are the significant relationships of (a) background knowledge and reading performance as well (b) topic interest and reading performance also among the results for the moderate-interest &
background knowledge and high- interest &
background knowledge tests.
18
Gul, Waqar Ahmed Waqar. "Effect Of Recycled Cement Concrete Content On Rutting Behavior Of Asphalt Concrete." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609765/index.pdf.
Повний текст джерелаАнотація:
Disposed waste materials remained from demolished buildings have been an
environmental problem especially for developing countries. Recycled Cement
Concrete (RCC) is one of the abundant components of waste materials that
include quality aggregates. Use of RCC in asphalt concrete pavements is
economically a feasible option as it not only helps in recycling waste materials but
also preserves natural resources by fulfilling the demand for quality aggregate in
pavement constructions. However, due to variability in RCC characteristics, a
detailed evaluation of its effect on asphalt concrete performance is required.
In this study, effect of RCC content on rutting potential of asphalt concrete is
investigated using laboratory prepared specimens. Rutting susceptibility of the
specimens is determined using repeated creep tests performed in the uniaxial
stress mode. Because of the aspect ratio requirements for the repeated creep test,
the standard Marshall mix design procedures were modified based on the energy
concept by changing the compactor device and the applied design number of
blows. The modified specimens were tested to determine a number of parameters
that can describe the rutting behavior of the tested mixes. The findings indicate
that slope constant and flow number give relatively stronger relationships with
rutting behavior as compared to the other rutting parameters. While increasing the RCC content yields improved rutting performance for coarse graded specimens, it
dramatically reduces the performance for fine graded specimens.
19
Karaman, Hilal. "A Content Based Movie Recommendation System Empowered By Collaborative Missing Data Prediction." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612037/index.pdf.
Повний текст джерелаАнотація:
The evolution of the Internet has brought us into a world that represents a huge amount of information items such as music, movies, books, web pages, etc. with varying quality. As a result of this huge universe of items, people get confused and the question &ldquoWhich one should I choose?&rdquo
arises in their minds. Recommendation Systems address the problem of getting confused about items to choose, and filter a specific type of information with a specific information filtering technique that attempts to present information items that are likely of interest to the user. A variety of information filtering techniques have been proposed for performing recommendations, including content-based and collaborative techniques which are the most commonly used approaches in recommendation systems. This thesis work introduces ReMovender, a content-based movie recommendation system which is empowered by collaborative missing data prediction. The distinctive point of this study lies in the methodology used to correlate the users in the system with one another and the usage of the content information of movies. ReMovender makes it possible for the users to rate movies in a scale from one to five. By using these ratings, it finds similarities among the users in a collaborative manner to predict the missing ratings data. As for the content-based part, a set of movie features are used in order to correlate the movies and produce recommendations for the users.
20
Ugur, Erdogmus Feray. "Research Trends In Ceit Ms And Phd. Theses In Turkey: A Content Analysis." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610394/index.pdf.
Повний текст джерелаАнотація:
The main aim of this study is to look for trends in the instructional technology field in Turkey and to visualize general tendencies in the field in research topics, research types, and methodologies. Content analysis research design was used in this study. In this study, the unit of analysis was MS theses and PhD. theses published in instructional technology departments in Turkey, and the researcher aimed to analyze all of the population. Hence, 215 MS theses and 32 PhD. theses were analyzed in this study.
The data were categorized according to characteristics of the MS theses and PhD. theses (author, university, advisor, and publication year), research topics, research methods, sample type, sample size, data collection methods and research settings. These categories were statistically analyzed. In these statistical analyses both frequencies of these categories and fluctuations of these categories in time were analyzed.
The findings of the study indicated that most of the MS theses were published in the Middle East Technical University and most of the dissertations were published in Ankara University. In addition to this, most of the MS theses and PhD. theses used quantitative research methods, and experimental studies were the most popular type. Not surprisingly, the study results revealed that convenient sampling was the most preferred sampling method and most of the studies used 31 &ndash100 subjects in their samples. Moreover, questionnaires, aptitude tests and interview schedules were the most common data gathering instruments used, and higher education was the most preferred research environment for the studies analyzed. Finally, most of the MS theses and PhD. theses focused on delivery system media formats, comparison studies and learner variables.
21
Gevenkiris, Ali. "Determination Of Morphine And Total Phenolic Content In Poppy Seed Of Turkish Origin." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613052/index.pdf.
Повний текст джерелаАнотація:
Turkey is important major licid opium poppy (Papaver Somniferum) producer for medicinal and scientific purposes in the world and one of the two traditional producer country. The poppy seeds which are unique part of the opium poppy are used for food purpose. About 25.000 ton/year poppy seeds
were produced for food purpose. Recent years morphine content of commercially available poppy seeds were speculated. Some studies have been reported that poppy seeds from different origins contain a wide variation
of morphine (2 &ndash294) &mu
g/g content. They have been used also different sample preparation method (extraction and derivatization) and different instruments (GC-MS) during analyses. In this study morphine content was determined in Turkish origin which were white, yellow and blue poppy seeds colors by using high pressure liquid chromatography (HPLC). Different sample preparation method (without derivatization) was used. Morphine was eluted from poppy seeds by acidic water through stationary phase activated aluminum oxide. Poppy seed samples were collected from 13 provinces and 35 different sowing fields of Turkey. The determined morphine contents in poppy seeds were ranged between (9.73 to 37.46) &mu
g/g. Any study was not found in the literatures on determination of total phenolic in poppy seed. In this study, the optimum condition for extraction of polyphenols in poppy seeds was determined and then, total phenolic values were obtained in three different colours seeds by spectrophotometric method. At the end of experiments the total phenolic contents in white, yellow and blue colours poppy seed were found to be 4.44, 3.05 and 3.67 mg/g respectively.
22
Demiralay, Burak. "Investigation Of Human Promoter Cpg Content And Methylation Profiles At Different Conservation Levels." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614840/index.pdf.
Повний текст джерелаАнотація:
Methylation of CpG islands located at the promoter regions is a mechanism which controls gene silencing and expression. Hyper or hypo methylation of these sites on promoter sequences have been associated with many diseases, like cancer. Even though promoter CpG islands and their methylation profiles are important regulators of gene expression, the exact mechanism of gene silencing through methylation is not known. Here, we have investigated the status of promoter CpG methylation under various evolutionary pressures by calculating the differences in promoter CpG content and methylation profiles at different pass points. In order to determine the list of genes under each category we have analyzed and compared the orthologs among 58 genomes available through ENSEMBL. The total number of CpG dinucleotides at the promoter regions of all groups of genes have been calculated and compared. Additionally, we have compared the experimentally determined
methylation profiles of these CpG's between human blood cells and fibroblast cells. While the promoter CpG content changed through common to newer genes, the number of the CpG units methylated found to be consistent. Here, we present the functional level analysis of common gene lists at different pass points and report the differences of the promoter CpG content and the methylation profiles among these groups with distinct evolutionary conservation status. We have also observed the conservation status of individual methylated CpG units on the low and high methylated genes. Our analysis revealed that the surrounding methylation content had a positive effect on the conservation of individual CpG&rsquo
s.
23
Aghakarimi, Armin. "Local Modeling Of The Ionospheric Vertical Total Electron Content (vtec) Using Particle Filter." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614867/index.pdf.
Повний текст джерелаАнотація:
ABSTRACT
LOCAL MODELING OF THE IONOSPHERIC VERTICAL TOTAL ELECTRON CONTENT (VTEC) USING
PARTICLE FILTER
Aghakarimi, Armin
M.Sc., Department of Geodetic and Geographic Information Technologies
Supervisor: Prof. Dr. Mahmut Onur Karslioglu
September 2012, 98 pages
Ionosphere modeling is an important field of current studies because of its influences on the propagation of the electromagnetic signals. Among the various methods of obtaining ionospheric information, Global Positioning System (GPS) is the most prominent one because of extensive stations distributed all over the world. There are several studies in the literature related to the modeling of the ionosphere in terms of Total Electron Content (TEC). However, most of these studies investigate the ionosphere in the global and regional scales. On the other hand, complex dynamic of the ionosphere requires further studies in the local structure of the TEC distribution. In this work, Particle filter has been used for the investigation of local character of the ionosphere VTEC. Besides, standard Kalman filter as an effective method for optimal state estimation is applied to the same data sets to compare the corresponding results with results of Particle filter. The comparison shows that Particle filter indicates better performance than the standard Kalman filter especially during the geomagnetic storm. MATLAB©R2011 software has been used for programing all processes and algorithms of the study.
24
Yildirim, Yakup. "Automatic Semantic Content Extraction In Videos Using A Spatio-temporal Ontology Model." Phd thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12610496/index.pdf.
Повний текст джерелаАнотація:
Recent increase in the use of video in many applications has revealed the need for extracting the content in videos. Raw data and low-level features alone are not sufficient to fulfill the user's need
that is, a deeper understanding of the content at the semantic level is required. Currently, manual techniques are being used to bridge the gap between low-level representative features and high-level semantic content, which are inefficient, subjective and costly in time and have limitations on querying capabilities. Therefore, there is an urgent need for automatic semantic content extraction from videos. As a result of this requirement, we propose an automatic semantic content extraction system for videos in terms of object, event and concept extraction. We introduce a general purpose ontology-based video semantic content model that uses object definitions, spatial relations and temporal relations in event and concept definitions. Various relation types are defined to describe fuzzy spatio-temporal relations between ontology classes. Thus, the video semantic content model is utilized to construct domain ontologies. In addition, domain ontologies are enriched with rule definitions to lower spatial relation computation cost and to be able to define some complex situations more effectively. As a case study, we have performed a number experiments for event and concept extraction in videos for basketball and surveillance domains. We have obtained satisfactory precision and recall rates for object, event and concept extraction. A domain independent application for the proposed framework has been fully implemented and tested.
25
Dalay, Oral. "Interactive Classification Of Satellite Image Content Based On Query By Example." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/2/12607039/index.pdf.
Повний текст джерелаАнотація:
In our attempt to construct a semantic filter for satellite image content, we have built a software that allows user to indicate a few number of image regions that contains a specific geographical object, such as, a bridge, and to retrieve similar objects on the same satellite image. We are particularly interested in performing a data analysis approach based on user interaction. User can guide the classification procedure by interaction and visual observation of the results. We have applied a two step procedure for this and preliminary results show that we eliminate many true negatives while keeping most of the true positives.
26
Aydin, Sevgi. "Examination Of Chemistry Teachers." Phd thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614327/index.pdf.
Повний текст джерелаАнотація:
The purpose of this study was to examine topic-specific nature of pedagogical content knowledge (PCK). Two experienced chemistry teachers&rsquoPCK was examined in electrochemistry and radioactivity. To capture participants&rsquo
PCK, all PCK components were studied. To get deep and rich answers to research questions asked, qualitative methodology was used. Participants were selected through purposeful sampling. Data were gathered through card-sorting activity, Content Representation (CoRe), semi-structured interviews, classroom observations, and field notes. Results revealed that participants had two types of PCK, namely, PCK A for teaching electrochemistry and PCK B for teaching radioactivity. PCK A included content-based and teacher-centered instruction, many links to other topics in chemistry and in physics. The assessment was coherent which included different types of assessment strategies used at the beginning, during, and at the end of teaching. In PCK B, it was less teacher-centered. The link to other topics was limited. Additionally, teachers used fragmented assessment and were less knowledgeable about learners&rsquo
difficulties and misconceptions in radioactivity than they were in electrochemistry. Differences between PCK A and B may be related to nature of the topics. Learners need to have much pre-requisite knowledge both from chemistry and physics to learn electrochemistry. Also, there are more concepts in electrochemistry than there are in radioactivity. It seems that when teachers have to focus on more concepts to teach, they may have a tendency to teach more-teacher centered to save time. Teacher education programs should focus on topic-specific nature of PCK and provide topic-specific training to teachers.
27
Ozbal, Gozde. "A Content Boosted Collaborative Filtering Approach For Movie Recommendation Based On Local &." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610984/index.pdf.
Повний текст джерелаАнотація:
Recently, it has become more and more difficult for the existing web based systems
to locate or retrieve any kind of relevant information, due to the rapid growth of the
World Wide Web (WWW) in terms of the information space and the amount of the
users in that space. However, in today's world, many systems and approaches make it possible for the users to be guided by the recommendations that they provide about new items such as articles, news, books, music, and movies. However, a lot of traditional recommender systems result in failure when the data to be used throughout the recommendation process is sparse. In another sense, when there exists an inadequate number of items or users in the system, unsuccessful recommendations are produced. Within this thesis work, ReMovender, a web based movie recommendation system, which uses a content boosted collaborative filtering approach, will be presented. ReMovender combines the local/global similarity and missing data prediction v techniques in order to handle the previously mentioned sparseness problem effectively. Besides, by putting the content information of the movies into consideration during the item similarity calculations, the goal of making more successful and realistic predictions is achieved.
28
Onur, Ozgur Deniz. "A Complexity-utility Framework For Optimizing Quality Ofexperience For Visual Content In Mobile Devices." Phd thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614088/index.pdf.
Повний текст джерелаАнотація:
Subjective video quality and video decoding complexity are jointly optimized in order to determine the video encoding parameters that will result in the best Quality of Experience (QoE) for an end user watching a video clip on a mobile device. Subjective video quality is estimated by an objective criteria, video quality metric (VQM), and a method for predicting the video quality of a test sequence from the available training sequences with similar content characteristics is presented. Standardized spatial index and temporal index metrics are utilized in order to measure content similarity. A statistical approach for modeling decoding complexity on a hardware platform using content features extracted from video clips is presented. The overall decoding complexity is modeled as the sum of component complexities that are associated with the computation intensive code blocks present in state-of-the-art hybrid video decoders. The content features and decoding complexities are modeled as random parameters and their joint probability density function is predicted as Gaussian Mixture Models (GMM). These GMMs are obtained off-line using a large training set comprised of video clips. Subsequently, decoding complexity of a new video clip is estimated by using the available GMM and the content features extracted in real time. A novel method to determine the video decoding capacity of mobile terminals by using a set of subjective decodability experiments that are performed once for each device is also proposed. Finally, the estimated video quality of a content and the decoding capacity of a device are combined in a utility-complexity framework that optimizes complexity-quality trade-off to determine video coding parameters that result in highest video quality without exceeding the hardware capabilities of a client device. The simulation results indicate that this approach is capable of predicting the user viewing satisfaction on a mobile device.
29
Aksoy, Fatma. "The Information Content Of Earnings And Systematic Risk In Changing Economic Conjecture: The Turkish Case." Thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12610119/index.pdf.
Повний текст джерелаАнотація:
This thesis analyses the information content of inflation adjusted financial statements for investors and the informational value of accounting earnings and systematic risk in explaining stock returns in Turkey. Information content of inflation accounting is tested by using event study methodology. Results show that, contrary to 2002, there exist abnormal returns/(losses) in the period surrounding the announcement of 2004 financial statements. However, due to non-company specific political and economic conditions around the announcement days, we cannot precisely state that either the inflation adjustment or the political forces cause the abnormal price activity at the time of research.
Second part of the thesis is based on the regression study methodology which shows the significance of accounting earnings and firms&rsquosystematic risk in explaining stock returns, in different economic conjectures. Results show that earnings have informational value for 2003 and 2004 fiscal years while systematic risk is significant in the period before 2003. This may imply that earnings become significant in good periods of the economy while the systematic risk becomes significant when the economy is in recession or recovery periods.
30
Bulut, Aykut. "Investigating Perceptions Of Preservice Mathematics Teachers On Their Technological Pedagogical Content Knowledge (tpack) Regarding Geometry." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614704/index.pdf.
Повний текст джерелаАнотація:
The aim of this study is to investigate perceptions of preservice mathematics teachers&rsquotechnological pedagogical content knowledge (TPACK) regarding geometry. In addition, the purpose is to examine the relationships among the components of TPACK. Moreover, possible gender and year of enrollment differences related to preservice mathematics teachers&rsquo
technological pedagogical content knowledge dimensions are examined. This research study has been conducted with 780 preservice mathematics teachers who are enrolled in elementary mathematics education department of Education Faculties of seven public universities located in Central Anatolia. Perceived TPACK regarding geometry instrument has been developed to collect data. In order to determine the levels of preservice mathematics teachers&rsquo
perceptions related to TPACK in geometry, descriptive information have been used. The results indicate that preservice mathematics teachers&rsquo
perceptions of TPACK related to geometry is higher than moderate. Furthermore, correlational analysis was conducted to identify the relationship among dimensions of TPACK. Positive significant correlations among the components of the TPACK framework were found in correlational analysis. Besides, two-way MANOVA has been conducted to investigate a possible relationship between demographic information of preservice elementary mathematics teachers and their perceptions of TPACK. According to the MANOVA results, there are statistically significant differences between male and female preservice mathematics teachers in favor of male participants in three components of TPACK, namely technological knowledge, technological pedagogical knowledge and technological pedagogical content knowledge in favour of males.
31
Yasaroglu, Yagiz. "Multi-modal Video Ummarization Using Hidden Markov Models For Content-based Multimedia Indexing." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/3/1124734/index.pdf.
Повний текст джерелаАнотація:
This thesis deals with scene level summarization of story-based videos. Two different approaches for story-based video summarization are investigated. The first approach probabilistically models the input video and identifies scene boundaries using the same model. The second approach models scenes and classifies scene types
by evaluating likelihood values of these models. In both approaches, hidden Markov models are used as the probabilistic modeling tools. The first approach also exploits the relationship between video summarization and video production, which is briefly explained, by means of content types. Two content types are defined, dialog driven and action driven content, and the need to define such content types is emonstrated
by simulations. Different content types use different hidden Markov models and
features. The selected model segments input video as a whole. The second approach models scene types. Two types, dialog scene and action scene, are defined with different features and models. The system classifies fixed sized partitions of the video as either of the two scene types, and segments partitions separately according to their scene types. Performance of these two systems are compared against a iv
deterministic video summarization method employing clustering based on visual properties and video structure related rules. Hidden Markov model based video summarization using content types enjoys the highest performance.
32
Tarakci, Hilal. "An Ontology-based Multimedia Information Management System." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609865/index.pdf.
Повний текст джерелаАнотація:
In order to manage the content of multimedia data, the content must be annotated. Although any user-defined annotation is acceptable, it is preferable if systems agree on the same annotation format. MPEG-7 is a widely accepted standard for multimedia content annotation. However, in MPEG-7, semantically identical metadata can be represented in multiple ways due to lack of precise semantics in its XML-based syntax. Unfortunately this prevents metadata interoperability. To overcome this problem, MPEG-7 standard is translated into an ontology. In this thesis, MPEG-7 ontology is used on top and the given user-defined ontologies are attached to the MPEG-7 ontology via a user friendly interface, thus building MPEG-7 based ontologies automatically. Our proposed system is an ontology-based multimedia information management framework due to its modular
architecture, ease of integrating with domain specific ontologies naturally and automatic harmonization of MPEG-7 ontology and domain-specific ontologies. Integration with domain specific ontologies is carried out by enabling import of
domain ontologies via a user-friendly interface which makes the system independent of application domains.
33
Arikan, Sandikcioglu Pakize. "Perception With And Without Concepts: Searching For A Nonconceptualist Account Of Perception." Phd thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615614/index.pdf.
Повний текст джерелаАнотація:
It is agreed upon by many philosophers that perception represents the world to be in a certain way. However, there is disagreement among those philosophers about whether perceptual content is conceptual or not. The aim of this thesis is to provide a clear presentation of the debate and to propose an account of nonconceptual perceptual content that can tackle many philosophical problems related to the issue.
Conceptualism about perceptual content is the view that perceptual content is wholly conceptual. Proponents of this view claim that a subject cannot be in a contentful perceptual state without possessing concepts that fully characterize the content of his experience. The main motivation behind conceptualism is the justificatory role perception is supposed to play in forming perceptual beliefs. It is claimed that if perceptual content provides rational ground or reason for forming perceptual beliefs, it has to be conceptual just like the belief it is a reason for.
However, there are several philosophical problems that arise from such an understanding of perceptual content. Most of them mainly derive from the implausibility of the claim that a subject needs to possess every concept that figures in the characterization of the content of his perceptual state. So, nonconceptualism is based on the assumption that a contentful perceptual state can occur albeit the absence of all or some concepts that characterize the content. Therefore, in this thesis I aim to provide a notion of nonconceptual perceptual content that is epistemically relevant, i.e. that can ground perceptual beliefs in spite of its nonconceptual character.
34
Soysal, Medeni. "Combining Image Features For Semantic Descriptions." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/4/1124353/index.pdf.
Повний текст джерелаАнотація:
Digital multimedia content production and the amount of content present all
over the world have exploded in the recent years. The consequences of this fact
can be observed everywhere in many different forms, to exemplify, huge digital
video archives of broadcasting companies, commercial image archives, virtual
museums, etc. In order for these sources to be useful and accessible, this
technological advance must be accompanied by the effective techniques of
indexing and retrieval. The most effective way of indexing is the one providing a
basis for retrieval in terms of semantic concepts, upon which ordinary users of
multimedia databases base their queries. On the other hand, semantic
classification of images using low-level features is a challenging problem.
Combining experts with different classifier structures, trained by MPEG-7low-level color and texture descriptors, is examined as a solution alternative. For
combining different classifiers and features, advanced decision mechanisms are
proposed, which utilize basic expert combination strategies in different settings.
Each of these decision mechanisms, namely Single Feature Combination (SFC),
Multiple Feature Direct Combination (MFDC), and Multiple Feature Cascaded
Combination (MFCC) enjoy significant classification performance improvements
over single experts. Simulations are conducted on eight different visual semantic
classes, resulting in accuracy improvements between 3.5-6.5%, when they are
compared with the best performance of single expert systems.
35
Sahinkaya, Ferhat. "A Content Boosted Collaborative Filtering Approach For Recommender Systems Based On Multi Level And Bidirectional Trust Data." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612013/index.pdf.
Повний текст джерелаАнотація:
As the Internet became widespread all over the world, people started to share great amount of data on the web and almost every people joined different data networks in order to have a quick access to data shared among people and survive against the information overload on the web. Recommender systems are created to provide users more personalized information services and to make data available for people without an extra effort. Most of these systems aim to get or learn user preferences, explicitly or implicitly depending to the system, and guess &ldquopreferable data&rdquo
that has not already been consumed by the user. Traditional approaches use user/item similarity or item content information to filter items for the active user
however most of the recent approaches also consider the trustworthiness of users. By using trustworthiness, only reliable users according to the target user opinion will be considered during information retrieval. Within this thesis work, a content boosted method of using trust data in recommender systems is proposed. It is aimed to be shown that people who trust the active user and the people, whom the active user trusts, also have correlated opinions with the active user. This results the fact that the rated items by these people can also be used while offering new items to users. For this research, www.epinions.com site is crawled, in order to access user trust relationships, product content information and review ratings which are ratings given by users to product reviews that are written by other users.
36
Aktan, Timucin. "Compensatory Nature Of Mixed Stereotypes: An Investigation Of Underlying Mechanisms In The Framework Of Stereotype Content Model." Phd thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614349/index.pdf.
Повний текст джерелаАнотація:
The present dissertation aims to investigate cognitive and motivational underpinnings of stereotype contents in differing contexts. This dissertation consisted of two related sections. In the first section, comparison was suggested as the cognitive process underlying the implicit competence and warmth attributions toward businesswomen and homemakers. Four studies using Go/No Go Association Task were conducted to investigate the comparison process. Findings of the studies indicated that comparison has a significant impact on implicit mixed stereotypes. Implicit mixed stereotypes were not observed when target groups and attributes were presented in non-comparative context (Study 1). However, implicit stereotype contents were obvious in comparative context (Study 2). Finally, implicit stereotype contents of homemakers and businesswomen were shaped in accordance to the part of the context that was comparative (i.e. group comparison in Study 3 and attribute comparison in Study4). In the second section of the dissertation, comparison process was related to individuals&rsquocompensation tendency. Two studies were conducted to examine the compensation tendency in the framework of System Justification Theory. In the first study (Study 5), presentation order of the target groups was manipulated. By this way, participants were not aware of the second group. Findings indicated that participants tended to compensate their first ratings toward homemakers and businesswomen. Furthermore, ambivalent sexism moderated the compensation tendency. In the second study (Study 6), both groups were presented together. Neither order of presentation nor its interactions were significant. Findings of the studies were discussed in the light of relevant literature.
37
Yildirim, Baris. "Marx On Form And Ccontent: It'." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613286/index.pdf.
Повний текст джерела
38
Gullu, Hasan Huseyin. "Investigation Of Structural, Electrical And Optical Properties Of Cu1-xagxinse2 Thin Films As A Function Of X Content." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612364/index.pdf.
Повний текст джерелаАнотація:
In this work, we will focus on the quaternary system Cu1-xAgxInSe2 (CAIS) to investigate the effects of silver (Ag) contribution and exchange with copper (Cu) in CuInSe2. This system is located between the ternary semiconducting chalcopyrite compounds CuInSe2 and AgInSe2. These are two most popular materials applied in photovoltaic cells because of their high optical absorption coefficient, which is an important factor for the manufacture of devices, direct energy gap with values Eg ~1.05 and 1.24 eV, respectively, and excellent thermal stabilities in air. As being a quaternary alloy, we expect that Cu1-xAgxInSe2 will show the advantage of a large degree of variation of their properties as a function of the composition, which allows adjusting of the band gap and other properties. We will analyze the behavior of Ag in the structure depending on the annealing and the effects of the Ag exchange to the Cu vacancies in this crystal structure by changing x (Ag content).
The crystals will be characterized structurally by X-ray diffraction (XRD). It will be used to prove crystallinity, determine perfection and lattice parameters depending on composition. Surface morphology and stoichiometry will be examined using scanning electron microscope (SEM) equipped with EDXA. Moreover, electrical properties including the temperature dependent electrical conductivity, and carrier concentrations and mobility extracted from Hall effect measurements, and, optical properties including absorption coefficient, photoconductivity, spectral transmission, and optical band gap have been determined to characterize Cu1-xAgxInSe2 thin films deposited using e-beam evaporation technique.
39
Sayin, Ayse. "A Content Analysis Of The Security Dimension Of The Turkish Accession To The European Union." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/2/12609697/index.pdf.
Повний текст джерелаАнотація:
This thesis aims to analyze the security relations between Turkey and the European Union within the context of enlargement. In this framework, firstly, the historical background of the changing dynamics of their bilateral security relations is studied by focusing both on the Cold War and the Post Cold War periods. In this historical study, more emphasis is put on the Post Cold War period where the changing security understandings of both Turkey and the EU, major developments leading to adoption of new mechanisms by both actors and their impact on their security relations are analyzed. Secondly, after evaluating the importance of security in the European integration and enlargement processes, the security dimension of the Turkish accession, appearing in the official enlargement discourse of the EU actors and in the articles of the leading European think tanks&rsquoscholars is examined via the use of content analysis method. Following this study, a critical analysis of the given speeches and articles is made. In the last part, the different security roles ascribed to Turkey by the EU actors and scholars in the related speeches and articles are discussed within the framework of Turkey&rsquo
s accession process. Accordingly, it is argued in this thesis that although Turkey&rsquo
s significance for European and regional security is accepted by the EU actors and scholars, this is not properly reflected on its accession process.
40
Uygun, Nazli. "Validity Of Science Items In The Student Selection Test In Turkey." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609716/index.pdf.
Повний текст джерелаАнотація:
This thesis presents content-related and construct-related validity evidence for science sub-tests within Student Selection Test (SST) in Turkey via underlying the content, cognitive processes, item characteristics, factorial structure, and group differences based on high school type. A total number of 126,245 students were present in the research from six type of school in the data of SST 2006. Reliability Analysis, Item Analysis, Principle Component Analysis (PCA) and one-way ANOVA have been carried out to evaluate the content-related and construct-related evidence of validity of SST. SPSS and ITEMAN programs were used to conduct the above-mentioned analyses. According to the results of content analysis, science items in the SST 2006 found to be measuring various cognitive processes under knowledge, understanding and problem solving cognitive domains. Those items loaded under three factors according to PCA findings which were measuring very close dimensions. Moreover, a threat to validity was detected via one-way ANOVA due to significant mean difference across high school types.
41
Koyuncu, Fulya. "Validity Of Biology Items In 2006, 2007, And 2008 Student Selection Test In Turkey." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12612946/index.pdf.
Повний текст джерелаАнотація:
Student selection test in Turkey compose of two parts. The purpose of the first part is to assess students&rsquohigher order thinking skills like analytical thinking, interpretation and reasoning about elementary school curriculum and 9th grade curricula objectives. On the other hand, second part of the test aims to assess students&rsquo
higher order thinking skills given in the high school curriculum. The main aim of this thesis is to analyze to what extend 2006, 2007 and 2008 student selection tests biology items assess higher order cognitive skills. In accordance with this purpose, elementary and high school curriculum and the appropriateness of the questions in the student selection test with the educational objectives of the curriculum are examined. In addition, dimensions of 2006, 2007, and 2008 SST biology items are examined by Exploratory Component Analysis and Confirmatory Component Analysis techniques. The result of those analysis revealed that SST biology items mostly focus on remembering skill and fail to assess higher order thinking skills. Additionally, there is not any consistency among 2006, 2007, and 2008 SSTs biology items in terms of dimensions which means there is not any construct in biology subtests of SSTs. The other aim of the present study is to identify how much academic and non-academic factors explain the biology achievement. While for academic factors reading comprehension, mathematics, physics, and chemistry achievements of students are used, age, gender, and school type are used for non-academic factors. Findings of the research revealed that academic factors, especially chemistry achievement, have significant affect on biology achievement. In terms of non-academic factors, graduating from selecting high school has important role for biology achievement. Additionally, older students and girls tend to have higher grades in biology.
42
Gultekin, Inci. "The Analysis Of The Perceptions Of English Language Instructors At Tobb University Of Economics And Technology Regarding Inset Content." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608814/index.pdf.
Повний текст джерелаАнотація:
The purpose of this study was to analyze the extent of instructors at TOBB University of Economics and Technology, Department of Foreign Languages regard in-service training programs crucial for their professional development. Another aspect of the study was to identify the professional needs of the instructors teaching preparatory classes as well as to determine the preferred instructional methods of an INSET program. The final aim of the study was to determine whether there are statistically significant differences between novice and experienced instructors regarding their needs and expectation of an in-service training program.The study was conducted among thirty-nine instructors who are teaching preparatory classes at TOBB ETU, DFL. The chairperson of the DFL also took part in the study.
Data from the 39 instructors were collected through questionnaires which were developed to uncover the opinions of instructors in terms of the characteristics of effective in-service training programs, to identify the needs of the instructors and determine the instructional methods preferred in-service training program. The questionnaires included both Likert scale and open-ended items. Moreover, 50-minute lessons of 10 instructors were video recorded. Video recordings aimed to identify the needs of the instructors that should be addressed through an in-service training program. Finally, interviews were conducted with 10 instructors whose classes were video recorded. The aim of the interviews was to enable the instructors to reflect on the findings of the questionnaires and the video recordings. Another interview was conducted with the chairperson of the DFL to uncover to what extent his perceptions about in-service training activities correlate with those of the instructors.
Data collected through the instruments were analyzed both quantitatively and qualitatively. Close-ended items were analyzed via the SPSS program and mean scores for each item were calculated besides an independent sample t-test. The qualitative data were analyzed through content analysis.
The results of the study revealed that the instructors believe INSET is crucial for their professional development, they would like to keep on track with new developments in the field of ELT and participate in seminars and conferences as part of INSET programs. In terms of the professional needs, it was found that instrcutors need to be trained on teaching speaking skills and pronunciation, written and oral correction, promoting student autonomy, dealing with classroom management problems, teaching mixed-ability groups, raising language awareness of students and reflecting on their own experience. The t-test results demonstrated that there was a statistical significance between the answers of novice and experienced instructors concerning being trained in &lsquoteaching vocabulary,&rsquo
&lsquo
teaching grammar&rsquo
and &lsquo
improving in written and oral correction strategies.&rsquo
It was found that experienced teachers are particularly interested in training sessions on teaching grammar, teaching vocabulary, and improving written and oral correction strategies. As a result of the findings, an ongoing INSET program model was proposed for the Department of Foreign Languages at TOBB ETU.
43
Munzur, Alaz Safak. "Trends In Female Labor Force Participation In Turkey In The Period 1988 - 2008: Structural Decomposition And Factor Content Analyses." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613436/index.pdf.
Повний текст джерелаАнотація:
Female labor force participation rate in Turkey has been consistently lower than the participation rate in many of the similar developing countries. In addition to country specific factors that prevent increased participation of women, the Turkish economy has been passing through a liberalization program since 1980s which also affects the structure of female labor force in many aspects. The main objective of this thesis is to investigate the patterns in the position of women in the labor force during 1988 -2008 in Turkey. The period under concern can be identified as one under which the country has largely completed its transformation within the structural reform programs. A major question that is investigated in this thesis is whether the female labor force has been affected differently than men during the period under concern. Employing structural decomposition and the factor content analyses, impacts of changing production patterns and foreign trade on female labor force are examined. Hence, the present study constitutes a basis for studies that aim to develop policy implications for increased female labor force participation in Turkey.
44
Gozetlik, Servet. "Husserl." Phd thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/2/1070978/index.pdf.
Повний текст джерелаАнотація:
Husserl&rsquos phenomenology can be analyzed simply by relying on the conception of intentionality. What I want to do is to put forward the logical grounds on which I can construct an acceptable account of Husserl&rsquo
s theory of intentionality. For this aim, firstly, I need to put some light on the nature of intentional acts or experiences.This suggests us that there is a close connection between the acts and what they are directed towards. Actually many have specified the relation between the act and the object, but what they have ignored was to give an exclusive explication of how such a relation can be connected with the content component. The penomenological content mediates between the intentional act and the intended object. There are some disagreements as regards whether the act is also directed towards the content or not. One of the significant aims of this research is to shed some light on the adequate arguments by which I will try to clarify that one can speak of such a directedness of intentional acts. In other words I believe that one can not only describe an intentional relation between the act and the intended object but also similar relations between the act and the content. There seem to be three parts to be examined interconnectedly: these, namely, are act, content and the object. For, the act is directed towards the object with the intermediation of the content. So his theory is not the same as the object theory of intentionality of which there are some defenders. Husserl&rsquo
s content theory is firstly examined in Logical investigations and Ideas respectively.
45
Sel, Kivanc. "The Effects Of Carbon Content On The Properties Of Plasma Deposited Amorphous Silicon Carbide Thin Films." Phd thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/2/12608292/index.pdf.
Повний текст джерелаАнотація:
The structure and the energy band gap of hydrogenated amorphous silicon carbide are theoretically revised. In the light of defect pool model, density of states distribution is investigated for various regions of mobility gap. The films are deposited by plasma enhanced chemical vapor deposition system with various gas concentrations at two different, lower (30 mW/cm2) and higher (90 mW/cm2), radio frequency power densities. The elemental composition of hydrogenated amorphous silicon carbide films and relative composition of existing bond types are analyzed by x-ray photoelectron spectroscopy measurements. The thicknesses, deposition rates, refractive indices and optical band gaps of the films are determined by ultraviolet visible transmittance measurements. Uniformity of the deposited films is analyzed along the radial direction of the bottom electrode of the plasma enhanced chemical vapor deposition reactor. The molecular vibration characteristics of the films are reviewed and analyzed by Fourier transform infrared spectroscopy measurements. Electrical characteristics of the films are analyzed by dc conductivity measurements. Conduction mechanisms, such as extended state, nearest neighbor and variable range hopping in tail states are revised. The hopping conductivities are analyzed by considering the density of states distribution in various regions of mobility gap. The experimentally measured activation energies for the films of high carbon content are too low to be interpreted as the difference between Fermi level and relevant band edge. This anomaly has been successfully removed by introducing hopping conduction across localized tail states of the relevant band. In other words, the second contribution lowers the mobility edge towards the Fermi level.
46
Akpinar, Neslihan Seref. "An Analysis Of The Weekend Supplements Of Turkish Daily Newspapers:from Women'." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12608089/index.pdf.
Повний текст джерелаАнотація:
This study is an attempt to analyse the newspaper supplements published by the Turkish printed press. An analysis of the qualitative and quantitative characteristics of the contents of the newspaper supplements selected due to the circulation numbers follows a brief history of the newspaper supplements. The study ends with the interviews made with the editor-in-chiefs of the weekend supplements. What results from these two analyses on different levels is that even though the basic aim of the daily newspaper supplements, mainly the weekend supplements is to increase the advertising revenues of the publishing companies, the content presented to the readers through these supplements also plays an important role in the social-ideological reproduction as the symbol of a specific life style. Therefore, this study also shows that critical political-economic approaches have to be completed with cultural analyses in the media studies.
47
Tilgen, Huseyin Pars. "Relationship Between Suction And Shear Strength Parameters Of Compacted Metu Campus Clay." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1300425/index.pdf.
Повний текст джерелаАнотація:
In this study, the relationship between soil suction and shear strength parameters of
compacted METU campus clay were investigated at different moisture contents. Soil
samples were tested at optimum moisture content (i.e. w=20.8%), at dry side of
optimum moisture content (i.e. w=14.8%, 16.8%, 18.8%) and at wet side of optimum
moisture content (i.e. w=22.8%, 24.8%, 26.8%). Direct shear tests were performed to
measure shear strength parameters (c', &
#934
'
) and soil suctions were measured by filter paper method after direct shear tests. These relationships were also investigated on soaked samples. The trends for suction, angle of internal friction and cohesion, which change on the dry side and wet side of optimum moisture content, were analyzed. The compacted METU campus clay gains granular soil fabric at the dry side of optimum moisture content. As moisture content increases, cohesion increases up to optimum moisture content and then decreases. But angle of internal friction decreases as moisture content increases. Soaking affects the samples more which are on the dry side of optimum moisture content. The soil suction (total suction and matric suction) affects the shear strength, and an increase in soil suction increases the shear strength.
48
Serim, Begum. "Nature, Severity And Origins Of Fears Among Children And Adolescents With Respect To Age, Gender And Socioeconomic Status." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612612/index.pdf.
Повний текст джерелаАнотація:
The present study aimed to investigate the fears of female and male children and adolescents between the ages of 8 and 18 from different socioeconomic levels. Additionally, the origins of children&rsquos and adolescents&rsquo
fears were examined. To reach the aims, the study was divided into two stages. In the first stage adaptation study of Fear Survey Schedule for Children-AM (Burnham, 1995) into Turkish was conducted. Two different samples were utilized in stage one. First sample was comprised of 355 participants (173 females and 182 males) with a mean age of 12.66 (SD=3.05). Second sample was comprised of 1315 participants (642 females and 673 males) with a mean age of 13.15 (SD=3.18). Second stage of the study was the main study. Second sample of the first stage including 1315 participants was utilized in stage two. Beside Fear Survey Schedule for Children, assessing the origins of children&rsquo
s and adolescents&rsquo
fears were utilized in the present study. Results of the study pointed that female children from low socioeconomic status at age 8 were the most fearful group among all children and adolescents. Also, for all fear factors female children and especially from low socioeconomic status reported higher level of fear than male preadolescents and adolescents. In general, it can be said that being female, from low socioeconomic status and young especially at age 8 is related to more intense fears. Among all children and adolescents, fears of children at age 8, 9 and 10 were significantly different than fears of preadolescents and adolescents at various ages, but they were not significantly different than each other. Fears of preadolescents at age 11, 12 and 13 were significantly different than preadolescents at least 2 years older than themselves. Overall most commonly endorsed fears were &ldquo
someone in my family dying&rdquo
, &ldquo
going to Hell&rdquo
, &ldquo
death of a closed person (grandparent, best friend etc.)&rdquo
, &ldquo
abuse&rdquo
, &ldquo
God&rdquo
, &ldquo
AIDS&rdquo
, &ldquo
someone in my family having an accident&rdquo
, &ldquo
my parents separating or getting divorced&rdquo
and &ldquo
terrorist attacks&rdquo
. Findings related to the origins of children&rsquo
s and adolescents&rsquo
fears indicated that 64.8% of all children learnt fear by modeling, 51.8% of all children learnt fear by negative information transmission and 35.8% all of children fear by experiences (conditioning). Negative information transmission intensified 45.7% of all children and adolescents, modeling intensified 49% of all children and adolescents and experience (conditioning) intensified 44.8% of all children and adolescents.
49
Topcu, Tansu. "An Investigation Of The Effectiveness Of The Theme-based Curriculum In The 2003-2004 Academic Year At The Department Of Basic English At Metu." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/2/12606856/index.pdf.
Повний текст джерелаАнотація:
This study examines the implementation of the theme-based curriculum in the 2003-2004 academic year to meet the goals and objectives of DBE students at METU. The research design of the study includes questionnaires and focus group interviews with former DBE students and DBE teachers. At the first stage, 231 students and 60 teachers took the questionnaire. Then, 19 students (in groups) and teachers (individually) were interviewed. The results indicated that there was a big difference between the perceptions of teachers and students and teachers were more negative about the program. Especially, pre-intermediate group teachers were quite dissatisfied with the program. Implementation and quality of the materials and lack of communication between teachers and administrators were considered as probable reasons. In terms of materials, reading was the skill most successfully developed. Moreover, students found handouts much more useful than the books. Writing seemed to be the most problematic area in the program. Finally, as a result of time limitation, teachers were perceived to be more active in class and pair/group work were considered as ineffective.
50
Guner, Kani Kerim. "Mpeg-7 Compliant Ordbms Based Image Storage And Retrieval System." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/1260247/index.pdf.
Повний текст джерелаАнотація:
There is an accelerating demand to access and work over the visual content of documents. Because of the insufficiency of text-based techniques for storing this data, content-based image retrieval (CBIR) systems have become a promising field.
Due this fact, in this study a CBIR system is implemented that is Mpeg-7 compliant and ORDBMS based. The database contains images and their content summaries that are parsed from XML files. The summaries describe their dominant colors, color histograms, color spaces and labels, in order to be compliant with Mpeg-7. The query process requires only the summary not the image itself.
Software implementation of the system is based on JSP and servlet technologies using Oracle database and Tomcat web server. It is shown that the usage of these tools in the proposed architecture brings security, portability, and speed.