Human activity recognition with analysis of angles between skeletal joints using a RGB-depth sensor

Ince, Omer Faruk,Ince, Ibrahim Furkan,Yildirim, Mustafa Eren,Park, Jang Sik,Song, Jong Kwan,Yoon, Byung Woo Electronics and Telecommunications Research Instit 2020 ETRI Journal Vol.42 No.1

Human activity recognition (HAR) has become effective as a computer vision tool for video surveillance systems. In this paper, a novel biometric system that can detect human activities in 3D space is proposed. In order to implement HAR, joint angles obtained using an RGB-depth sensor are used as features. Because HAR is operated in the time domain, angle information is stored using the sliding kernel method. Haar-wavelet transform (HWT) is applied to preserve the information of the features before reducing the data dimension. Dimension reduction using an averaging algorithm is also applied to decrease the computational cost, which provides faster performance while maintaining high accuracy. Before the classification, a proposed thresholding method with inverse HWT is conducted to extract the final feature set. Finally, the K-nearest neighbor (k-NN) algorithm is used to recognize the activity with respect to the given data. The method compares favorably with the results using other machine learning algorithms.

A new constitutive equation on ice materials

Ince, Serdar Turgut,Kumar, Ankush,Paik, Jeom Kee Taylor Francis 2017 SHIPS AND OFFSHORE STRUCTURES Vol.12 No.5

An advanced technology for structural crashworthiness analysis of a ship colliding with an ice-ridge: Numerical modelling and experiments

Ince, Serdar Turgut,Kumar, Ankush,Park, Dae Kyeom,Paik, Jeom Kee Elsevier 2017 International journal of impact engineering Vol.110 No.-

<P><B>Abstract</B></P> <P>The structural engineering problem associated with a ship colliding with an ice-ridge involves highly nonlinear mechanisms including buckling, collapse, crushing, plasticity and fracture together with environmental and operational factors, such as the loading speed (strain rate), temperature and salinity. The objective of this paper is to develop an advanced technology for numerical computations of structural crashworthiness in the event of a ship colliding with an ice-ridge. The nonlinear finite element method is used for modelling the problem, in which the ship structures are modelled by plate-shell finite elements and the ice-ridge structures are modelled by solid elements together with the KOSORI ice material models. Two sets of experiments are performed to validate the numerical computations. In the first set of experiments, ice is dropped on a steel plate from a height of 2m, and in the second, a steel solid (rigid) body is dropped on a steel plate under the same conditions. The results of the two experiments are compared to determine the differences between the ice responses and solid (rigid) body responses on the steel plate. It is concluded that the developed technology is very useful for computing the structural crashworthiness of a ship when colliding with an ice-ridge. Details of the test results are documented.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Nonlinear structural problems associated with a ship colliding with an ice-ridge are studied. </LI> <LI> Effects of buckling, collapse, crushing, plasticity and fracture together with environmental and operational factors, such as the loading speed (strain rate), temperature and salinity are taken into account. </LI> <LI> An advanced technology for numerical computations of structural crashworthiness in the event of a ship colliding with an ice-ridge is developed. </LI> <LI> The nonlinear finite element method is used for modelling the problem, in which the ship structures are modelled by plate-shell finite elements and the ice-ridge structures are modelled by solid elements together with the KOSORI ice material models. </LI> <LI> Two sets of experiments are performed to validate the numerical computations. </LI> <LI> It is concluded that the developed technology is very useful for computing the structural crashworthiness of a ship when colliding with an ice-ridge. </LI> </UL> </P>

Preliminary results from the soft x-ray crystal spectrometer on Alcator C-Mod

Ince-Cushman, A.,Rice, J. E.,Lee, S. G.,Bitter, M.,Reinke, M.,Podpaly, Y. American Institute of Physics 2006 Review of scientific instruments Vol.77 No.10

Use of a Temporary Shunt as a Salvage Technique for Distal Extremity Amputations Requiring Repair by Vessel Grafting during Critical Ischemia

Ince, Bilsev,Dadaci, Mehmet,Altuntas, Zeynep Korean Society of Plastic and Reconstructive Surge 2016 Archives of Plastic Surgery Vol.43 No.6

Background Although the use of temporary shunts in proximal extremity amputations has been reported, no study has described the use of temporary shunts in distal extremity amputations that require vein grafting. Moreover, the total volume of blood loss when temporary shunts are used has not been reported. The aim of this study was to investigate the applicability of a temporary shunt for distal extremity amputations requiring repair by vessel grafting with an ischemia time of >6 hours. This study also aimed to determine the total volume of blood loss when temporary shunts were used. Methods Patients who underwent distal major extremity replantation and/or revascularization with a vessel graft and who experienced ischemia for 6-8 hours between 2013 and 2014 were included in the study. A 6-Fr suction catheter was cut to 5 cm in length after the infusion of heparin, and secured with a 5-0 silk suture between the distal and the proximal ends of the artery. While bleeding continued, the bones were shortened and fixed. After the complete restoration of circulation, the arterial shunt created using the catheter was also repaired with a vein graft. Results Six patients were included in this study. The mean duration of ischemia was 7.25 hours. The mean duration of suction catheter use during limb revascularization was 7 minutes. The mean transfusion volume was 7.5 units. No losses of the extremity were observed. Conclusions This procedure should be considered in distal extremity amputations requiring repair by vessel grafting during critical ischemia.

Fast Video Fire Detection Using Luminous Smoke and Textured Flame Features

Ince, Ibrahim Furkan,Yildirim, Mustafa Eren,Salman, Yucel Batu,Ince, Omer Faruk,Lee, Geun-Hoo,Park, Jang-Sik Korean Society for Internet Information 2016 KSII Transactions on Internet and Information Syst Vol.10 No.12

In this article, a video based fire detection framework for CCTV surveillancesystems is presented. Two novel features and a novel image type with their corresponding algorithmsareproposed for this purpose. One is for the slow-smoke detection and another one is for fast-smoke/flame detection. The basic idea is slow-smoke has a highly varying chrominance/luminance texture in long periods and fast-smoke/flame has a highly varying texture waiting at the same location for long consecutive periods. Experiments with a large number of smoke/flame and non-smoke/flame video sequences outputs promising results in terms of algorithmic accuracy and speed.

Neuronal Elav-like (Hu) Proteins Regulate RNA Splicing and Abundance to Control Glutamate Levels and Neuronal Excitability

Ince-Dunn, G.,Okano, Hirotaka J.,Jensen, K.B.,Park, W.Y.,Zhong, R.,Ule, J.,Mele, A.,Fak, John J.,Yang, C.,Zhang, C.,Yoo, J.,Herre, M.,Okano, H.,Noebels, Jeffrey L.,Darnell, Robert B. Cell Press 2012 Neuron Vol.75 No.6

The paraneoplastic neurologic disorders target several families of neuron-specific RNA binding proteins (RNABPs), revealing that there are unique aspects of gene expression regulation in the mammalian brain. Here, we used HITS-CLIP to determine robust binding sites targeted by the neuronal Elav-like (nElavl) RNABPs. Surprisingly, nElav protein binds preferentially to GU-rich sequences in vivo and in vitro, with secondary binding to AU-rich sequences. nElavl null mice were used to validate the consequence of these binding events in the brain, demonstrating that they bind intronic sequences in a position dependent manner to regulate alternative splicing and to 3'UTR sequences to regulate mRNA levels. These controls converge on the glutamate synthesis pathway in neurons; nElavl proteins are required to maintain neurotransmitter glutamate levels, and the lack of nElavl leads to spontaneous epileptic seizure activity. The genome-wide analysis of nElavl targets reveals that one function of neuron-specific RNABPs is to control excitation-inhibition balance in the brain. Video Abstract:

A Salvage Operation for Total Penis Amputation Due to Circumcision

Ince, Bilsev,Gundeslioglu, Ayse Ozlem Korean Society of Plastic and Reconstructive Surge 2013 Archives of Plastic Surgery Vol.40 No.3

Circumcision is one of the most common rituals in Jewish and Islamic cultures. It may also be performed for phimosis correction or the treatment of recurrent balanitis. Although circumcision is considered to be a technically easy and safe surgical procedure with no significant risk, it may lead to severe complications such as necrotizing fasciitis or total penis amputation. In this report, we present a case of penis amputation at two levels occurring with third-degree burns due to electrocautery during circumcision. Although penile replantation was attempted, it was unsuccessful due to burn damage to the veins. After restoration of the functional structures, the penis was buried in the inguinal area by reepithelization to maintain blood circulation. The recovery of the penis was successful. This case is presented as a novel example of groin flap surgery to achieve a functionally and aesthetically acceptable outcome in a salvage operation for a penis with significant traumatic injury, which has not been previously reported in the literature.

A generalized entropy optimization modelling in the theory of stochastic differential equations

Ince Nihal 한국통계학회 2022 Journal of the Korean Statistical Society Vol.51 No.2

In this study, we have developed one new approximate method to obtain a probability density function of a solution of a given stochastic diferential equation (SDE) at a fxed time. The mentioned method is based on the estimation SDE ftting to given statistical data and approximate methods solving SDE. For this purpose, by approximate methods solving SDE trajectories of this equation are constructed. For example, it is possible to use the Euler–Maruyama (EM) method. By using trajectories at a fxed time are obtained reasonable random variables of the solution of SDE. The probability density function of the mentioned random variables is obtained. It is possible to use diferent statistical methods. These results are acquired by using the theorem. In our investigation, it is used Generalized Entropy Optimization Methods (GEOM). The reason using GEOM’s is explained oneself by the fact that these methods represent distributions that are more fexible distributions. We illustrated the use of this new method to apply the SDE model ftting on S&P 500 stock data.

Experimental design approach for ultra-fast nickel removal by novel bio-nanocomposite material

Ince, Olcay K.,Aydogdu, Burcu,Alp, Hevidar,Ince, Muharrem Techno-Press 2021 Advances in nano research Vol.10 No.1

In the present study, novel chitosan coated magnetic magnetite (Fe3O4) nanoparticles were successfully biosynthesized from mushroom, Agaricus campestris, extract. The obtained bio-nanocomposite material was used to investigate ultra-fast and highly efficient for removal of Ni2+ ions in a fixed-bed column. Chitosan was treated as polyelectrolyte complex with Fe3O4 nanoparticles and a Fungal Bio-Nanocomposite Material (FBNM) was derived. The FBNM was characterized by using X-Ray Diffractometer (XRD), Scanning Electron Microscopy-Energy Dispersive X-Ray Spectroscopy (SEM-EDS), Fourier Transform Infrared spectra (FTIR) and Thermogravimetric Analysis (TGA) techniques and under varied experimental conditions. The influence of some important operating conditions including pH, flow rate and initial Ni2+ concentration on the uptake of Ni2+ solution was also optimized using a synthetic water sample. A Central Composite Design (CCD) combined with Response Surface Modeling (RSM) was carried out to maximize Ni2+ removal using FBNM for adsorption process. A regression model was derived using CCD to predict the responses and analysis of variance (ANOVA) and lack of fit test was used to check model adequacy. It was observed that the quadratic model, which was controlled and proposed, was originated from experimental design data. The FBNM maximum adsorption capacity was determined as 59.8 mg g-1. Finally, developed method was applied to soft drinks to determine Ni2+ levels. Reusability of FBNM was tested, and the adsorption and desorption capacities were not affected after eight cycles. The paper suggests that the FBNM is a promising recyclable nanoadsorbent for the removal of Ni2+ from various soft drinks.