Malware detection: program run length against detection rate

Okane, Philip,Sezer, Sakir,McLaughlin, Kieran,Eul Gyu Im IET 2014 IET software Vol.8 No.1

<P>N-gram analysis is an approach that investigates the structure of a program using bytes, characters or text strings. This research uses dynamic analysis to investigate malware detection using a classification approach based on N-gram analysis. A key issue with dynamic analysis is the length of time a program has to be run to ensure a correct classification. The motivation for this research is to find the optimum subset of operational codes (opcodes) that make the best indicators of malware and to determine how long a program has to be monitored to ensure an accurate support vector machine (SVM) classification of benign and malicious software. The experiments within this study represent programs as opcode density histograms gained through dynamic analysis for different program run periods. A SVM is used as the program classifier to determine the ability of different program run lengths to correctly determine the presence of malicious software. The findings show that malware can be detected with different program run lengths using a small number of opcodes.</P>

백서에서 Resiniferatoxin이 열대사에 미치는 영향

이태희,김명수,Okane, Naoko,Kobayashi, Akiko,Osaka, Toshimasa,Inoue, Shuji 全南大醫大 2000 전남의대학술지 Vol.36 No.1

변역기술자료 : 동 및 동합금의 용탕특성 및 응고특성

토시미쯔오카네 ( Toshimitsu Okane ),조훈,최경환,김기영 한국주조공학회 2014 한국주조공학회지 Vol.34 No.1

응고 조직 제어에 있어서의 발전 동향

김기영 ( K . Y . Kim ),( T . Okane ),조상현 ( S . H . Cho ),신건 ( G . Shin ),( T . Umeda ) 대한금속재료학회 1999 大韓金屬學會會報 Vol.12 No.2

Capsaicin 유사물질인 Resiniferatoxin의 열생산 작용기전에 관한 연구

이태희,김명수,이재우,(NaokoOkane),(AkikoKobayashi),(ToshimasaOsaka),(ShujiInoue) 대한비만학회 2000 The Korean journal of obesity Vol.9 No.2

The effects of adrenodemedullation and propranolol, ruthenium red on thermoregulation by capsaicin analogue resiniferatoxin were studied in male Wistar rats. Thermoregulation was observed by the measurements of oxygen consumption and temperature of colon and skin, simultaneously every 5 minutes for 300 minutes after subcutaneous injection of resiniferatoxin (50 ㎍/kg). The rats were studied at one to four weeks after adrenodemodullation. Propranolol treatments were 2 times of intraperitoneal injections (5 mg/kg) before 30 minutes and at the same time of resiniferatoxin injection. Ruthenium red (10 ㎍/kg) was injected subcutaneously before 15 minutes and after 45 minutes of resiniferatoxin injection. The results were as follows. 1. After resiniferatoxin (50 ㎍/kg s.c.) administration, oxygen consumption showed double-peak response. It reached to the peak level (12.8±0.5 mL/min/kg 0.75) at 50 minutes, then began to decrease. At 100 minutes, it began to increase and maintained elevated level till 300 minutes. After resiniferatoxin injection, colon temperature showed biphasic pattern; it decreased by 0.2 ℃ at 30 minutes, ant then increased. Skin temperature began to increase immediately after resiniferatoxin injection, reached to 30.38±0.45℃ at 50 minutes. Then it decreased slowly, but maintained elevated level till 300 minutes. 2. After resiniferatoxin (50 ㎍/kg) administration in adrenodemedullated rats, oxygen consumption was reduced in early-increasing response of double-peak response but was not changed in late-increasing response. The temperature of colon and skin was not changed after adrenodemedullation, too. 3. Increments of oxygen consumption by resiniferatoxin administration was abolished by the treatment of propranolol till 300 minutes. Changes of skin temperature by resiniferatoxin administration were not affected by propranolol (The peak level of skin temperature was 30.4±0.8℃ at 40 minutes. The temperature of colon was slightly decreased to 36.0±0.2℃ at 50 minutes). 4. Ruthenium red enhanced the increments of oxygen consumption to 14.7±0.8 and 14.9±0.5 mL/min/kg 0.75 at 50 and 100 minutes after resiniferatoxin administration respectively while the decrement of oxygen consumption after the first peak was attenuated by ruthenium red treatment to 14.3±0.6 mL/min /kg 0.75 at 70 minutes. There were no significant changes of skin temperature and colon temperature. Elevation of colon temperature was enhanced to the peak of 37.5±0.2℃ from 140 to 160 minutes. These results suggest that thermogeneses of resiniferatoxin may be caused by catecholamine secreted from the adrenal medulla and β adrenergic receptor binding in peripheral region, and inhibition system of thermogenesis such as VN2 receptor system also may be involved by resiniferatoxin.

A new species of Cavernocypris (Ostracoda) from Texas (U.S.A.) with a taxonomic key

Okan Külköylüoğlu 국립생물자원관 2020 Journal of species research Vol.9 No.2

Cavernocypris reddelli n. sp. is a new species of the genus Cavernocypris collected from spring waters of Texas, U.S.A.. This is the sixth species of the genus described so far. It can be distinguished from the other species of the genus by the shape and length of carapace, presence of robust marginal pore canals on right valve, number and length of setae on second antenna, shape of hemipenis, numbers of whorls on the Zenker organ, and differences in other parts of chaetotaxy. The new species was compared with other species and a new taxonomic key for the genus is presented for future studies.

Irrationality in Politics and Governance of Maritime Affairs: The Collapse of Sovereign Maritime Governance

Okan DURU 국제이네비해양경제학회 2014 International Journal of e-Navigation and Maritime Vol.1 No.1

This paper investigates maritime policies from the perspective of behavioural law and economics by questioning the role of political instruments, levels of development, groupthink bias, moral hazards and practical examples. Through the emergence of deregulation and procedural simplification, the reasons behind overregulation need to be revisited. The future of maritime governance is expected to hollow out several functions for alternative institutions and keep the governance simple for performing other roles such as advisory services, mainstreaming, amongst others. Therefore, the concept of maritime governance without a government can be thought as a driving force for the future. Based on the deregulation and the hollow-out framework, maritime governance (particularly in developing and developed countries) should focus on the softpower of maritime administration and the role of expert power; as well as referent power to mainstream the maritime industry.

Bivariate Long Term Fuzzy Time Series Forecasting of Dry Cargo Freight Rates

Okan DURU,에므라 블룻,요시다 시게루 한국해운물류학회 2010 The Asian journal of shipping and Logistics Vol.26 No.2

This paper proposes a bivariate long term fuzzy inference system for time series forecasting task in the eld of freight market. Fuzzy time series methods are applied by many scholars and it is broadly accepted pattern recognition and forecasting tool. Previous studies mainly establish algorithms for high requency time series data such as daily and monthly intervals. The proposed model performs similar techniques for long term annual base data and also extends the conventional method with multi-variate heuristic algorithm. Empirical work is accomplished on shipping freight rate data and life expectancy is used as a leading indicator in the bivariate fuzzy time series model.

Long Term Freight Market Index and Inferences

Okan DURU,Shigeru Yoshida 한국해운물류학회 2011 The Asian journal of shipping and Logistics Vol.27 No.3

This paper proposes to establish a long term shipping freight index for dry cargo transportation and investigates its particulars among the cyclic fluctuations. Many scholars investigated dry cargo shipping markets and some of them attempted to construct a composite index of freight rates. Although, several critiques are indicated about the method of composition, these indices depicted long term movements in general. This paper also presents models for long term freight rates and seaborne trade with the recent data. A novel contribution is derived from using life expectancy as a long-run leading indicator.

Stiffness modeling of RC columns reinforced with plain rebars

Okan Özcan 국제구조공학회 2014 Structural Engineering and Mechanics, An Int'l Jou Vol.50 No.2

Inaccurate predictions of effective stiffness for reinforced concrete (RC) columns having plain (undeformed) longitudinal rebars may lead to unsafe performance assessment and strengthening of existing deficient frames. Currently utilized effective stiffness models cover RC columns reinforced with deformed longitudinal rebars. A database of 47 RC columns (33 columns had continuous rebars and the remaining had spliced reinforcement) that were longitudinally reinforced with plain rebars was compiled from literature. The existing effective stiffness equations were found to overestimate the effective stiffness of columns with plain rebars for all levels of axial loads. A new approach that considers the contributions of flexure, shear and bond slip to column deflections prior to yielding was proposed. The new effective stiffness formulations were simplified without loss of generality for columns with and without lap-spliced plain rebars. In addition, the existing stiffness models for the columns with deformed rebars were improved while taking poor bond characteristics of plain rebars into account.