Detecting social cliques for automated privacy control in online social networks

As a result of the increasing popularity of online social networking sites, millions of people spend a considerable portion of their social life on the Internet. The information exchanged in this context has obvious privacy risks. Interestingly, concerns of social network users about these risks are related not only to adversarial activities but also to users they are directly connected to (friends). In particular, many users want to occasionally hide portions of their information from certain groups of their friends. To satisfy their users' needs, social networking sites have introduced privacy mechanisms (such as Facebook's friend lists) that enable users to expose a particular piece of their information only to a subset of their friends. Unfortunately, friend lists need to be specified manually. As a result, users frequently do not use these mechanisms, either due to a lack of concern about privacy, but more often due to the large amount of time required for the necessary setup and management. In this paper, we propose a privacy control approach that addresses this problem by automatically detecting social cliques among the friends of a user. In our context, a social clique is a group of people whose members share a significant level of social connections, possibly due to common interests (hobbies) or a common location. To find cliques, we present an algorithm that, given a small number of friends (seed), uses the structure of the social graph to generate an approximate clique that contains this seed. The cliques found by the algorithm can be transformed directly into friend lists, making sure that a piece of sensitive data is exposed only to the members of a particular clique. Our evaluation on the Facebook platform shows that our method delivers good results, and the cliques that our algorithm identifies typically cover a large fraction of the actual social cliques. © 2012 IEEE

Utilization of near ir absorbing gold nanocolloids by green synthesis

10th Japanese-Mediterranean Workshop on Applied Electromagnetic Engineering for Magnetic, Superconducting, Multifunctional and Nano Materials, JAPMED’10 2017; Izmir; Turkey; 4 July 2017 through 8 July 2017The rapid developments in nanoscience, and its applications on biomedical areas have a large impact on drug delivery, tissue engineering, sensing, and diagnosis. Gold is widely investigated nanomaterial for the last couple of decades, since it has unique surface properties and very low toxicity to biological environment. In this work, we present a novel synthesis of gold nanoparticles (GNPs) exhibiting both visible and near-IR absorbance without agglomeration. The surface of GNPs were analyzed by routine methods and the binding kinetics were investigated by Surface Plasmon Resonance (SPR) Spectroscopy. The unique optical properties of near-IR asorbing GNP colloids hold promise for biological applications.Izmir Institute of Technology Scientific Research Project (BAP) 2016İYTE7

Proteomic analysis of flowers at two developmental stages in Thermopsis turcica (Fabaceae)

Flower development is a complex physiological phenomenon that is affected by environmental stimuli and endogenous signals. Several molecular approaches have provided a comprehensive view of the physiological processes associated with flower development, but little is known about proteomic changes. Therefore, we investigated the proteomic alterations during flower development in endemic Thermopsis turcica (Vuralia turcica), an unusual legume species with 3–4 free carpels in a single flower. A comparative proteomic analysis to identify proteins involved in flower development was carried out in T. turcica. Alterations in proteomes of the flower buds and fully opened flowers were studied by two-dimensional gel electrophoresis. A total of 66 proteins were differentially expressed during flower development. Among them, 32 protein spots were identified by mass spectrometry. Functional annotation of these flower proteins revealed their involvement in transcription and protein metabolism, energy and carbohydrate metabolisms, plant defense, cell walls, photosynthesis, secondary metabolism, and amino acid metabolism. Moreover, most of these proteins were downregulated at the later stage of flower development. Proteins involved in protein metabolism, sugar metabolism, and stress defense are regulated during flower development, suggesting that they have possible roles in developmental regulation. These results have given new insights into the proteome alterations during flower development

High swing CMOS realization for third generation current conveyor (CCIII)

In this paper a new CMOS realization for third generation current conveyor (CCIII) is proposed. The proposed circuit provides high swing range at terminals X and Y. The circuit has low input impedances at terminals X and Y and high output impedance at terminals Z+ and Z-. The circuit has 180MHz -3dB cutoff frequency in voltage follower mode. SPICE simulation results using MIETEC 1.2 CMOS process model are given

The Union of Probabilistic Boxes: Maintaining the Volume

Suppose we have a set of n axis-aligned rectangular boxes in d-space, {B-1, B-2,..., B-n}, where each box B-i is active (or present) with an independent probability pi. We wish to compute the expected volume occupied by the union of all the active boxes. Our main result is a data structure for maintaining the expected volume over a dynamic family of such probabilistic boxes at an amortized cost of O(n((d-1)/2) log n) time per insert or delete. The core problem turns out to be one-dimensional: we present a new data structure called an anonymous segment tree, which allows us to compute the expected length covered by a set of probabilistic segments in logarithmic time per update. Building on this foundation, we then generalize the problem to d dimensions by combining it with the ideas of Overmars and Yap [13]. Surprisingly, while the expected value of the volume can be efficiently maintained, we show that the tail bounds, or the probability distribution, of the volume are intractable-specifically, it is NP-hard to compute the probability that the volume of the union exceeds a given value V even when the dimension is d = 1

Research on Drawing Attention to Overlooked Viruses in Plant Viruses Causing Yellowing-Type Symptoms in Cucurbitaceae

A single-stranded, positive-sense plant RNA virus called the Cucurbit chlorotic yellows virus (CCYV, Crinivirus, Closteroviridae) is comprised of RNA1 and RNA2. It is semipersistently transmitted by the whitefly Bemisia tabaci biotypes MEAM1 and MED. In 2004, CCYV was discovered on melon plants in Japan. Several other cucurbit species, as well as a range of non-species, were subsequently reported from countries such as Saudi Arabia, California, Israel, Taiwan, Sudan, Lebanon, Iran, Greece, Türkiye, Egypt, Spain, and China. Whitefly populations are frequently encountered in cucurbit cultivating areas. Virus plant diseases attributed to whiteflies are common in squash cultivation in the open field and greenhouses in Türkiye, especially in cucumbers and squash. Cucumber vein yellowing virus (CVYV), Cucurbit yellow stunting disorder virus (CYSDV), Tomato leaf curl New Delhi virus (ToLCNDV), Squash vein-yellowing virus (SqVYV) are the leading virus diseases transmitted by Bemisia tabaci. Symptoms caused specifically by these viral diseases are of the yellowing type, although they differ as intervascular yellowing, yellowing of old or young leaves, and upward curling. Besides these viruses, CCYV, a problem in cucurbits, is carried by whitefly like others, causes yellowing type symptoms, and its first record in cucumber was reported in 2017 in Türkiye. However, this virus is ignored in the production of cucurbits, it is a problem in production areas. There are major viruses cause similar symptoms with the presence of the Cucumber chlorotic yellows virus is overlooked in the symptomatological observation. In this study, we tried to reveal the difference of CCYV, which is encountered in cucurbit growing areas in Antalya and whose presence was detected by RT-PCR, from other viruses and emphasized its importance as a virus that should be considered in classical breeding studies

Effects of exogenous cysteine application on maize exposed to chromium stress

Sistein (Cys), kükürt metabolizmasının ilk organik kükürtlü bileşiğidir. Cys dahil kükürt metabolizmasının ürünleri, bitkilerin ağır metal ve oksidatif strese karşı cevaplarında biyolojik fonksiyonlara sahiptir. Bu nedenle bu araştırmada, mısır (Zea mays L. cv. Bora) fidelerinin yapraklarında Cys'in krom (Cr) stresinin etkilerini hafifletme üzerindeki etkileri araştırılmıştır. Hidroponik olarak yetiştirilen fidelerin köklerine 7 gün süreyle Cr stresi (100 μM) ve Cr ile kombine şekilde Cys (500 μM) uygulanmıştır. Cr stresi büyümede azalma, kloroz ve yapraklarda kıvrılma gibi toksisite semptomlarına neden olmuştur. Cr stresi, bağıl su içeriğini (BSİ), -aminolevulinik asit dehidrataz (ALAD) aktivitesini, klorofil ve protein içeriklerini azaltmıştır. Diğer taraftan, Cr yapraklarda süperoksit dismutaz (SOD) ve katalaz (CAT) aktivitelerini azaltırken, peroksidaz (POD) aktivitesini artırmıştır. İlaveten, Cr malondialdehit (MDA) birikimi ve sistein içeriğini arttırmıştır. Kök ortamına dışsal Cys uygulaması, büyümedeki Cr teşvikli inhibisyonu azaltmıştır. Dışsal Cys uygulaması Cr stresi koşullarında klorofil birikimini ve sistein içeriğini artırmıştır. Ayrıca Cys uygulaması, SOD ve CAT aktivitelerini arttırmış ve Cr teşvikli MDA birikimini önemli düzeyde azaltmıştır. Bu sonuçlar, dışsal Cys uygulamasının Cr stresinin neden olduğu oksidatif stresin olumsuz sonuçlarını azalttığını göstermektedir.Cysteine (Cys) is the first organosulfur compound of sulfur metabolism. The products of sulfur metabolism including Cys have biological functions in responses to heavy metal stress and oxidative stress. In this study, therefore, the effects of Cys on alleviating chromium (Cr) toxicity in the leaves of maize (Zea mays L. cv. Bora) seedlings were investigated. Hydroponically grown seedlings were subjected to Cr stress (100 μM) and in combination with Cys (500 μM) for 7 days. Cr stress resulted in toxicity symptoms such as reduced growth, chlorosis, and rolling in leaves. Cr stress decreased the relative water content (RWC), -aminolevulinic acid dehydratase (ALAD) activity, and chlorophyll and protein contents. On the other hand, Cr decreased activities of superoxide dismutase (SOD) and catalase (CAT) in leaves, while increased the activity of peroxidase (POD). In addition, Cr increased the accumulation of malondialdehyde (MDA) and cysteine contents. Exogenous application of Cys to rooting media alleviated Cr-induced growth suppression. Exogenous Cys promoted the chlorophyll accumulation and cysteine content under Cr stress. Moreover, application of Cys increased the activities of SOD and CAT, and markedly diminished Cr-induced MDA accumulation. These results suggest that the exogenous application of Cys reduced the negative consequences of oxidative stress caused by Cr stress

A Case Report: Fournier’S Gangrene in a Patient With Type-1 Diabetes Mellitus

DergiPark: 379024tmsjAims: Fournier’s gangrene is a necrotizing fasciitis of the perinea and genital areas. Scrotal Fournier’s gangrene,while being rare, is an urological emergency and requires urgent surgery. In this case report, we aimed to investigate a patient with Fournier’s Gangrene (FG), caused by a cut to scrotu

Fabrication of polymer nanofiber-conducting polymer fabric and noncontact motion sensing platform

10th Japanese-Mediterranean Workshop on Applied Electromagnetic Engineering for Magnetic, Superconducting, Multifunctional and Nano Materials, JAPMED’10 2017; Izmir; Turkey; 4 July 2017 through 8 July 2017Conductive polymer-electrospun polymer nanofiber network was combined to host iron oxide nanoparticles providing micrometer thick sensing interface. The sensor has fabricated as freestanding fabric exhibiting 10 to 100 KOhm base resistivity upon bias applied. The moving object has been sensed through the electrostatic interactions between fibers and object. The sensing range has been found to be 1-5 cm above the surface of fabric. By the controlled combination of conductive polymers electrospun polymer nanofibers effective device miniaturization has been provided without loss of performance. The noncontact motion sensor platform has unique flexibility and light weight holding a potential for wearable sensor technology

Effects of ethylenediaminetetraacetic acid and sodium hypochlorite on the bond strength of bonding agents to pulp chamber lateral walls

AbstractBackground/purposeThe purposes of this in vitro study were to determine the microtensile bond strengths of four different dentin adhesive materials placed in pulp chamber walls, and to test the effects of 5% sodium hypochlorite (NaOCl) and 17% ethylenediaminetetraacetic acid (EDTA) pretreatments on resin dentin bond strengths.Materials and methodsRecently extracted human third molars were selected. The teeth were divided into four groups. Specimens in each group were treated as follows: irrigated with distilled water; irrigated with EDTA for 5 minutes; irrigated with sodium hypochlorite for 5 minutes; and irrigated with EDTA for 5 minutes followed by NaOCl for 5 minutes. Treated specimens were dried, bonded with a total-etching adhesive, two self-etching adhesives, or a one-bottle self-etching adhesive system. After the bonding procedure and composite restoration, teeth were sectioned, and 15 dentin sticks were obtained. Microtensile testing was performed, and scanning electron micrographs were taken of each irrigated group.ResultsIn the control group, the one-bottle self-etching adhesive system showed statistically higher bond strength values. EDTA irrigation did not affect the bond strength except for the total-etching adhesive. NaOCl significantly reduced the bond strengths of all adhesives. The EDTA and NaOCl combination did not show a statistically significant reduction in bond strengths of the adhesives to pulpal dentin.ConclusionThere was a reduction in bond strengths of all adhesive systems used to test pulp chamber lateral walls after endodontic irrigation solutions were used