Digital Commons Network^™

A Novel Multirobot Map Fusion Strategy For Occupancy Grid Maps, Sebahatti̇n Topal, İsmet Erkmen, Aydan Müşerref Erkmen

Turkish Journal of Electrical Engineering and Computer Sciences

In this paper, we consider the problem of merging partial occupancy grid environment maps, which are extracted independently by individual robot units during search and rescue (SAR) operations in icomplex disaster environments. Moreover, these maps are combined using intensity-based and area-based features without knowing the initial position and orientation of the robots. Our proposed approach handles the limitation of existing studies in the literature; for example, the limited overlapped area between partial maps of robots is enough for good merging performance and unstructured and complex partial environment maps can be merged efficiently. These abilities allow multirobot teams to efficiently generate …

A Bacterial Foraging Optimization Approach For Tuning Type-2 Fuzzy Logic Controller, Mohammad Kiani, Seyed Mohammad Ali Mohammadi, Ali Akbar Gharaveisi

Turkish Journal of Electrical Engineering and Computer Sciences

The type-1 fuzzy sets theory was proposed to handle uncertainty in control systems, but some cases showed some liabilities of type-1 fuzzy sets when faced with unpredictable disturbance and uncertainties. Therefore, type-2 fuzzy sets were introduced and extended while providing more degrees of freedom in designing criteria. The most important specification of type-2 fuzzy sets is the interval between a superior membership function and an inferior membership function, which is called the footprint of uncertainty. This paper presents a bacterial foraging optimization approach for optimizing the parameterized membership function. The above criterion is applied to an automatic voltage regulator system …

Performance Analysis Of Bid Calculation Methods In Multirobot Market-Based Task Allocation, Burak Kaleci̇, Osman Parlaktuna

Turkish Journal of Electrical Engineering and Computer Sciences

In this study, the empirical results of a market-based task allocation method for heterogeneous and homogeneous robot teams and different types of tasks in 2 different environments are presented. The proposed method allocates robots to tasks through a parallel multiitem auction-based process. The main contribution of the proposed method is energy-based bid calculations, which take into account both the heterogeneity of the robot team and features of the tasks. The multirobot task allocation problem is considered as the optimal assignment problem and the Hungarian algorithm is used to clear the auctions. Simulations are carried out using energy-based, distance-based, and time-based …

Cancer Risk Analysis By Fuzzy Logic Approach And Performance Status Of The Model, Atinç Yilmaz, Kürşat Ayan

Turkish Journal of Electrical Engineering and Computer Sciences

Cancer is the leading life-threatening disease for people in today's world. Although cancer formation is different for each type of cancer, it has been determined by studies and research that stress also triggers cancer types. Early precaution is very important for people who have not fallen ill yet with a disease like cancer that has a high mortality rate and expensive treatment. With this study, we expound that the possibility of developing such disease may be decreased and people could take measures against it. For the 3 cancer types selected as pilot work by introducing a fuzzy logic model, the …

A Framework For Medical Image Retrieval Using Merging-Based Classification With Dependency Probability-Based Relevance Feedback, Hossein Pourghassem, Sabalan Daneshvar

Turkish Journal of Electrical Engineering and Computer Sciences

Content-based image retrieval (CBIR) systems are used to retrieve relevant images from large-scale databases. In this paper, a framework for the image retrieval of a large-scale database of medical X-ray images is presented. This framework is designed based on query image classification into several prespecified homogeneous classes. Using a merging scheme and an iterative classification, the homogeneous classes are formed from overlapping classes in the database. For this purpose, the shape and texture features, selected using the forward selection algorithm, are optimized by a novel genetic algorithm-based feature reduction and optimization algorithm in the feature space. In this algorithm, using …

Biogeography-Based Optimization For Voltage Stability Improvement And Reactive Reserve Management, Subramanian Annamalai, Ravi Govinthabamy

Turkish Journal of Electrical Engineering and Computer Sciences

This paper proposes a biogeography-based optimization algorithm to enhance the voltage stability of a power system. It computes the optimal quantity of reactive power support with a view to place the static VAR compensator at the most appropriate nodes. The scheme inflicts an effective management of VAR resources in the process of improving the voltage profile and reducing the network losses. It includes the results of IEEE 30-node system to illustrate the feasibility of the approach.

Complexity Reduction Of Rbf Multiuser Detector For Ds-Cdma Using A Genetic Algorithm, Mustafa Uğur Torun, Damla Gürkan Kuntalp

Turkish Journal of Electrical Engineering and Computer Sciences

The optimal receiver for detecting direct sequence code division multiple access (DS-CDMA) signals suffers from computational complexity that increases exponentially with the number of users. Several suboptimal multiuser detectors (MUDs) have been proposed to overcome this problem. Due to the nonlinear nature of the decision boundary of the optimal receiver, it is known that nonlinear receivers outperform linear receivers. Radial basis function (RBF) MUD is a nonlinear suboptimal receiver that can perfectly approximate this decision boundary and it needs no training since it is fully determined when the spreading codes of all users and the channel impulse response (CIR) are …

Capability-Based Task Allocation In Emergency-Response Environments: A Coalition-Formation Approach, Afsaneh Fatemi, Kamran Zamanifar, Naser Nematbakhsh

Turkish Journal of Electrical Engineering and Computer Sciences

This paper addresses coalition formation, based on agent capabilities, centered on task allocation in emergency-response environments (EREs). EREs are environments that need fast task completion as their main requirement. We propose a team-based organization model, based on an existing organization model for adaptive complex systems. The model has some key characteristics that are beneficial for EREs: agents act in dynamic, open domains; agents collaborate in completing group tasks; agents may have similar types of capabilities, but at different levels; tasks need different agent capabilities, at collective different levels; and agents are supervised in a partially decentralized manner. We formulate task …

Cada: Channel And Delay Aware Scheduler For Real-Time Applications In Wimax Networks, Melek Oktay, Haci Ali̇ Mantar

Turkish Journal of Electrical Engineering and Computer Sciences

Scheduling is the core of the worldwide interoperability for microwave access (WiMAX) technology that directly affects the performance of the network. In this study, we focus on scheduling and present a novel algorithm called the channel and delay aware scheduler (CADA) for real-time applications, such as voice over Internet protocol, video-on-demand, and video streaming. CADA has 2 important modules: wireless and network delay monitoring tools. The wireless module, including the compensation and channel state monitoring modules, increases the network throughput and provides fairness among all of the flows in the network. The network delay monitoring tool calculates the estimated network …

Using The Csm And Vsm Techniques To Speed Up The Ica Algorithm Without A Loss Of Quality, Mahdi Mahdikhani, Mohammad Hosein Kahaei

Turkish Journal of Electrical Engineering and Computer Sciences

In blind source separation problems that are implemented based on the independent component analysis (ICA) algorithm, the separation speed and quality are related inversely. In this paper, the proposed algorithms eliminate this tradeoff by generating a faster separation while maintaining the quality. In the proposed algorithms, in each frequency bin and in all of the learning steps, the separation quality of the separating matrix is compared with another one that we define as a situated matrix, and the best matrix is considered as an initial separating matrix in the next learning step. In this paper, we propose 2 algorithms based …

Data Hiding In Digital Images Using A Partial Optimization Technique Based On The Classical Lsb Method, Feyzi̇ Akar, Yildiray Yalman, Hüseyi̇n Selçuk Varol

Turkish Journal of Electrical Engineering and Computer Sciences

This paper presents a new partial optimization approach for the least significant bit (LSB) data hiding technique that can be used for protecting any secret information or data. A deterioration effect of as little as possible in an image is intended using the LSB data hiding technique and this is well realized utilizing the proposed partial optimization approach achieving the same data embedding bit rates. In the proposed approach, all of the image pixels are classified into 8 regions and then the 8 distinct ordering codings are applied to each region by the developed partial optimization encoder. Thus, the most …

Power Efficient Linear Transmitters Using Sigma-Delta Modulation With Switching Amplifiers, Tayfun Nesimoglu

Turkish Journal of Electrical Engineering and Computer Sciences

In conventional envelope elimination and restoration transmitters, the envelope information of the carrier is reconstructed by modulating the supply voltage of the switching amplifier. In this paper, it is shown that the supply voltage modulation introduces nonlinearity and reduces the average power efficiency of the transmitter. Here, novel transmitter architectures using sigma-delta--modulated carrier signals are proposed to overcome these shortcomings. The proposed architecture's and conventional envelope elimination and restoration transmitter's linearity and efficiency performances are compared at various oversampling rates and signal bandwidths. It is demonstrated that the proposed architectures may provide better linearity and efficiency than conventional envelope elimination …

Control Of Diesel Engines Mounted On Vehicles In Mobile Cranes Via Can Bus, Muci̇z Özcan, Hi̇dayet Günay

Turkish Journal of Electrical Engineering and Computer Sciences

In this study, the aim was to lift loads that required more force using the infrastructure of existing vehicles. To this end, a truck-mounted diesel engine was selected to be used in mobile crane applications. A control system was designed and implemented to obtain the appropriate hydraulic force by accessing the diesel engine with a controller area network bus via an electronic control unit (ECU). For this purpose, hydraulic pumps to be used to operate the crane were mounted on the selected mobile diesel engine with an ECU. Firms that manufacture cranes in the world produce cranes with infrastructure. This …

Stopping Spam With Sending Session Verification, Ahmet Baran

Turkish Journal of Electrical Engineering and Computer Sciences

Spam has become one of the most significant problems for Internet communication and users today. The traditional filtering methods and signature-based spam blocking systems that have come into prominence recently fall short, as statistics demonstrate that spam further mounts up day after day. In this study, a new method is recommended to block spam mails. In this recommended method, a mail sending session is verified during mail envelope communication by adding small attachments to the simple mail transfer protocol, so spam mails can be blocked before leaving the sender domain or relay machine. Additionally, hijacked user accounts are able to …

Demetriades V. Yelp, California Superior Court

Historical and Topical Legal Documents

No abstract provided.

Facebook V. Profile Technologies, United States District Court For The Northern District Of California

Historical and Topical Legal Documents

No abstract provided.

Clarifying The Role Of Precedent And The Doctrine Of Stare Decisis In Trial And Intermediate Appellate Level Charter Analysis, Adryan J.W. Toth

Dalhousie Journal of Legal Studies

What happens when valid constitutional precedent, including precedent from our country’s highest court, is called into question in both fact and law? Such has been an increasingly familiar phenomenon in Canadian Charter jurisprudence. This is not necessarily surprising considering that the Charter is now over 30 years old and previous Charter issues once thought to be settled are starting to be relitigated in light of new social and legislative facts. It is amongst this backdrop that this paper considers, and makes attempts to disentangle, some of the thorny doctrinal issues associated with stare decisis and precedent in such situations. The …

Cost Of Admission: One Rubber Stamp - Evaluating The Significance Of Investigative Necessity In Wiretap Authorizations After R V Araujo, Jim Cruess

Dalhousie Journal of Legal Studies

The current application (or lack thereof in some cases) and review of investigative necessity in wiretap case law suggests that the Supreme Court of Canada's decision in R. v. Araujo is not being applied in spirit or in substance. Wiretaps represent a serious risk to the privacy of targets and their associates; they are indiscriminate in their acquisition of information. Recognizing the risk wiretaps pose to privacy, the Supreme Court of Canada directed in R. v. Araujo that the wiretap authorizing judge "should not view himself or herself as a mere rubber stamp"; rather he or she should closely examine …

Perfect 10 V. Yandex, United States District Court For The Northern District Of California

Historical and Topical Legal Documents

No abstract provided.

Masck V. Sports Illustrated, United States District Court For The Eastern District Of Michigan

Historical and Topical Legal Documents

No abstract provided.

Ipos And The Slow Death Of Section 5, Donald C. Langevoort, Robert B. Thompson

Georgetown Law Faculty Publications and Other Works

Since its enactment, Section 5 of the Securities Act of 1933 has restricted sales-based communications with investors, but that effort is nearly dead even with respect to the most sensitive of offerings, the IPO. Our paper traces that devolution, which began almost as soon as the ’33 Act came into existence, though the SEC’s 2005 deregulatory reforms and Congress’ intervention in the JOBS Act of 2012. We show how much of this related to an embrace of “book-building” as the industry’s preferred method of price discovery, which requires private two-way communications between underwriters and potential sophisticated investors. But book-building (and …

The Electronic Silk Road: How The Web Binds The World In Commerce, Anupam Chander

Georgetown Law Faculty Publications and Other Works

On the ancient Silk Road, treasure-laden caravans made their arduous way through deserts and mountain passes, establishing trade between Asia and the civilizations of Europe and the Mediterranean. Today’s electronic Silk Roads ferry information across continents, enabling individuals and corporations anywhere to provide or receive services without obtaining a visa. But the legal infrastructure for such trade is yet rudimentary and uncertain. If an event in cyberspace occurs at once everywhere and nowhere, what law applies? How can consumers be protected when engaging with companies across the world?

In this accessible book, cyber-law expert Anupam Chander provides the first thorough …

Discussion Boards: Boring No More!, Deborah S. Adelman, Debbie Conner

All Faculty and Staff Scholarship

Creating discussion boards (DBs) that capture student imaginations and contain meaningful interactions can be a difficult process. Traditional DBs use a question-and-answer format that often is boring for both the student and instructor. The authors present creative approaches to DBs that result in lively debates and student-to-student and student-to-faculty interactions, including role playing, blogging, wikis, and the use of voice.

Euro Zone Crisis Management And The New Social Europe, Philomila Tsoukala

Georgetown Law Faculty Publications and Other Works

This article analyzes the changes in European governance since the beginning of the euro crisis in relation to the project of constructing Social Europe. The article tracks the incorporation of a structural reform agenda originally designed as bailout conditionality for countries on the verge of default into EU economic governance as a strategy for growth. Beyond the contestable grounds of this reform agenda, its adoption by the EU in the mode of crisis management poses serious questions of legitimacy. The new enhanced economic coordination process includes obligatory guidelines in domains under the legislative competence of Member States, such as labor …

Mirabile Dictu: The Bryn Mawr College Library Newsletter 16 (2013), Bryn Mawr College Library

Mirabile Dictu: Newsletter of the Bryn Mawr College Libraries

No abstract provided.

The Duty To Think Strategically, Nadelle Grossman

Faculty Publications

Under Delaware corporate law, directors and officers have a duty to oversee their firm’s management of risk to limit losses. Corporate law does not, however, require directors or officers to oversee their firm’s management of strategy to create gains. Yet, managing both risk and strategy is essential to a firm in creating value. In fact, as I argue in the Article, the current focus by courts and commentators only on risk management to prevent losses could actually undermine a firm’s management of its strategy for gains. I therefore propose a model for how Delaware corporate law can drive firms to …

Viacom V. Youtube, United States Court Of Appeals For The Second Circuit

Historical and Topical Legal Documents

Opening Brief for Plaintiffs-Appellants

Vesely V. Armslist, United States District Court For The Northern District Of Illinois

Historical and Topical Legal Documents

Motion to dismiss

The Several Faces Of Late-Gothic Eve: Gender And Marriage In The Mystery Creation And Fall Plays, Thomas Flanigan

Quidditas

The critical drive to make fundamental, substantive distinctions between Catholic and Protestant dogma and culture has always been central to early modern English studies, but over the past fifty years a prominent contingent of literary and historical scholars has endeavored more specifically to identify and articulate significant differences between Catholic and Protestant perceptions of women and marriage. According to one familiar, now widely accepted theory advanced primarily by Miltonists, a relatively feminist and pro-marriage Protestant ethic emerged in response to the extreme, aggressively misogynistic attitudes attributed to late-medieval Catholic thought. This paper will seek to demonstrate, through a close comparative …

Holy Places & Imagined Hellscapes: Qualifying Comments On Loca Sancta Sermon Studies—Christian Conversion In Northern Europe & Scandinavia, C. 500-1300, Todd P. Upton

Quidditas

The paper uses methods from medieval sermon studies to argue that an insularity in “monastic consciousness” can be traced to earlier centuries than the more generally discussed (and better documented) scholastic environments of 13th century monastic and cathedral schools. It assesses how a monastic discourse reliant on Biblical typologies informed the Christian conversion of northern Germanic and Scandinavian peoples (c. 500-1300, including the British Isles and Iceland). Moments of encounter between Christian missionaries and pagan cultures helped delineate this discourse, most apparent in extant records that reveal Christian and Norse perceptions of geography, holy places, deity worship, and eschatological expectations. …