Novel Survey on Email Spam Filtering Methods

Spam emails are causing major resource wastage by unnecessarily flooding the network links.The cost of spam is borne mostly by the recipient, so it is a form of postage due advertising. This paper describes how different methods can be used for spam filtering.To protect against unsolicited e-mails there are number of techniques presented with goal of efficient, accurate spam filtering. Few previous spam filters can meet the requirements of being user-friendly, attack-resilient, and personalized. This paper presents a literature survey into the state of research on spam filtering methods and how it is useful for user’s lives

Multi-messenger observations of a binary neutron star merger

On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors. The Fermi Gamma-ray Burst Monitor independently detected a gamma-ray burst (GRB 170817A) with a time delay of ~1.7 s with respect to the merger time. From the gravitational-wave signal, the source was initially localized to a sky region of 31 deg2 at a luminosity distance of 40+8-8 Mpc and with component masses consistent with neutron stars. The component masses were later measured to be in the range 0.86 to 2.26 Mo. An extensive observing campaign was launched across the electromagnetic spectrum leading to the discovery of a bright optical transient (SSS17a, now with the IAU identification of AT 2017gfo) in NGC 4993 (at ~40 Mpc) less than 11 hours after the merger by the One- Meter, Two Hemisphere (1M2H) team using the 1 m Swope Telescope. The optical transient was independently detected by multiple teams within an hour. Subsequent observations targeted the object and its environment. Early ultraviolet observations revealed a blue transient that faded within 48 hours. Optical and infrared observations showed a redward evolution over ~10 days. Following early non-detections, X-ray and radio emission were discovered at the transient’s position ~9 and ~16 days, respectively, after the merger. Both the X-ray and radio emission likely arise from a physical process that is distinct from the one that generates the UV/optical/near-infrared emission. No ultra-high-energy gamma-rays and no neutrino candidates consistent with the source were found in follow-up searches. These observations support the hypothesis that GW170817 was produced by the merger of two neutron stars in NGC4993 followed by a short gamma-ray burst (GRB 170817A) and a kilonova/macronova powered by the radioactive decay of r-process nuclei synthesized in the ejecta

Localization and broadband follow-up of the gravitational-wave transient GW150914

A gravitational-wave (GW) transient was identified in data recorded by the Advanced Laser Interferometer Gravitational-wave Observatory (LIGO) detectors on 2015 September 14. The event, initially designated G184098 and later given the name GW150914, is described in detail elsewhere. By prior arrangement, preliminary estimates of the time, significance, and sky location of the event were shared with 63 teams of observers covering radio, optical, near-infrared, X-ray, and gamma-ray wavelengths with ground- and space-based facilities. In this Letter we describe the low-latency analysis of the GW data and present the sky localization of the first observed compact binary merger. We summarize the follow-up observations reported by 25 teams via private Gamma-ray Coordinates Network circulars, giving an overview of the participating facilities, the GW sky localization coverage, the timeline, and depth of the observations. As this event turned out to be a binary black hole merger, there is little expectation of a detectable electromagnetic (EM) signature. Nevertheless, this first broadband campaign to search for a counterpart of an Advanced LIGO source represents a milestone and highlights the broad capabilities of the transient astronomy community and the observing strategies that have been developed to pursue neutron star binary merger events. Detailed investigations of the EM data and results of the EM follow-up campaign are being disseminated in papers by the individual teams

Localization and broadband follow-up of the gravitational-wave transient GW150914

A gravitational-wave transient was identified in data recorded by the Advanced LIGO detectors on 2015 September 14. The event candidate, initially designated G184098 and later given the name GW150914, is described in detail elsewhere. By prior arrangement, preliminary estimates of the time, significance, and sky location of the event were shared with 63 teams of observers covering radio, optical, near-infrared, X-ray, and gamma-ray wavelengths with ground- and space-based facilities. In this Letter we describe the low-latency analysis of the gravitational wave data and present the sky localization of the first observed compact binary merger. We summarize the follow-up observations reported by 25 teams via private Gamma-ray Coordinates Network Circulars, giving an overview of the participating facilities, the gravitational wave sky localization coverage, the timeline and depth of the observations. As this event turned out to be a binary black hole merger, there is little expectation of a detectable electromagnetic signature. Nevertheless, this first broadband campaign to search for a counterpart of an Advanced LIGO source represents a milestone and highlights the broad capabilities of the transient astronomy community and the observing strategies that have been developed to pursue neutron star binary merger events. Detailed investigations of the electromagnetic data and results of the electromagnetic follow-up campaign will be disseminated in the papers of the individual teams

A COMPARATIVE STUDY OF CARDIOVASCULAR ENDURANCE OF KORFBALL, SWIMMER AND THROWERS

he study was carried of Korfball, Swimmer and Thrower. It was hypothesis that there might be significant difference in the cardio-vascular endurance of Korfballer, Swimmer and Thrower. It was also hypothesis that the cardio vascular endurance of Korfballer and Swimmer will be more that thrower. For the purpose of this study total 30 subjects were selected. There were 10 players from each game. These were the players who took part in the inter-collegiate competition, S.G.B. Amravati University, Amravati. The subjects were in the age group of 18 to 25 years, only male players were taken for the study

A Comparative Study of Cardiovascular Endurance of Korfball, Swimmer and Throwers

He study was carried of Korfball, Swimmer and Thrower. It was hypothesis that there might be significant difference in the cardio-vascular endurance of Korfballer, Swimmer and Thrower. It was also hypothesis that the cardio vascular endurance of Korfballer and Swimmer will be more that thrower. For the purpose of this study total 30 subjects were selected. There were 10 players from each game. These were the players who took part in the inter-collegiate competition, S.G.B. Amravati University, Amravati. The subjects were in the age group of 18 to 25 years, only male players were taken for the study

A Kinetic Study On Malenisation Of Soybean Oil

Malenisation of soybean oil with maleic anhydride was investigated.The effect of variations in weight percent ratio of reactants on rate of reaction has been studied. Sodium bisulphate and sodium bisulphite are used as catalyst for the malenisation of soybean oil. The reaction kinetics is estimated for soybean oil – maleic anhydride ranging from 75:25 to 90:10. The optimum conditions are found to be 85:15 soybean oil:maleic anhydride weight percent ratio and 2 % catalyst at 2300C for 330 minutes with conversion of 82.48% and yield of 95%

A COMPARATIVE STUDY OF SINGLE POINT DIAMOND DRESSER AND MULTI POINT DIAMOND DRESSER FOR GRINDING WHEEL A REVIEW

Grinding is used mainly for finishing metal component. Grinding is applied in last stage. The main objective is to generate quality surface on the component. Grinding wheel is consisting of the many abrasive particles. Dressing is a process which remove loaded surface of grinding wheel and makes it sharp. There is a single point and multi-point dressers are there. Multipoint diamond dresser has certain advantages the single point diamond dresser. The multi-point diamond dresser produce good quality surface finish on the work piece, produces more cutting surfaces on grinding wheel