Detection and Erasing Scribble Blackboard System Based on Hough-Transform Method Using Camera

Abstract Teachers of a secondary school in Semarang city are often exposed to blackboard chalk dust. This will give a significant impact if it occurs at a fairly frequent intensity and a long period of time. An automatic scratch detector and designing a device that can erase the blackboard is a preventive step that can reduce the long-term impact of chalk dust. The scratch detector uses a circle shape parameter as a mark of dirty position that needs to be erased. Light can affect the system performance. The system works properly at light intensities ranging from ± 160 to ± 200 lux. Testing the threshold value proves that the system can detect circles in the range of 40 - 55. The pixel size which is detected by the camera was 640x480 will allow the system to divide the blackboard into 9 mapping areas. The mapping area is differentiated into 9 sections so that the x and y coordinate positions of the blackboard dirty spot can be determined. A mechanical execution will erase the top and bottom areas according to the position of the detected mapping area. The success of scratch detector reaches 81.8%..

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The long-term impact of a whole school approach of restorative practice: the views of secondary school teachers

Pastoral Care in Education ◽

10.1080/02643944.2018.1528625 ◽

2018 ◽

Vol 36 (4) ◽

pp. 313-324

Author(s):

Rose Short ◽

Gill Case ◽

Karen McKenzie

Keyword(s):

Secondary School ◽

Secondary School Teachers ◽

School Teachers ◽

Whole School ◽

Whole School Approach ◽

Long Term Impact

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The Long Term Impact of Staying Put

Ageing and Society ◽

10.1017/s0144686x00000854 ◽

1993 ◽

Vol 13 (2) ◽

pp. 193-211 ◽

Cited By ~ 5

Author(s):

Philip Leather ◽

Sheila Mackintosh

Keyword(s):

Older People ◽

Housing Conditions ◽

Care Needs ◽

Long Period ◽

Factors Influencing ◽

Health Authorities ◽

The Future ◽

Long Term Impact ◽

The Impact

ABSTRACTStaying Put projects provide practical help to older home owners with the repair and improvement of their homes. A number of studies have examined the immediate impact of this help on the housing conditions experienced by older people and on their ability to remain living independently in the community, but the extent to which these benefits could last for a long period of time was not known. This paper describes the findings of a study which attempted to examine the longer-term impact of the Staying Put service. A sample of clients helped by Staying Put in the early 1980s were traced and interviewed in order to assess the impact of the assistance received and to examine their current and future housing and care needs. Although the study could not conclusively disentangle the impact of the Staying Put service from other factors influencing the ability of clients to live independently, it concluded that the help received was significant in improving housing conditions over a long period. The study made recommendations which aim to increase the effectiveness of Staying Put projects in the future, including the establishment of a target standard for the housing conditions of clients, the development of mechanisms for continuing contact with clients, and the provision of advice on moving on options where appropriate. More generally, however, the study concluded that more resources to fund services like Staying Put were required from government and from local and health authorities if they were to be more effective in helping clients to live independently.

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Crisis Phones - Suicide Prevention Versus Suggestion/Contagion Effects

Crisis ◽

10.1027/0227-5910/a000313 ◽

2015 ◽

Vol 36 (3) ◽

pp. 220-224 ◽

Cited By ~ 3

Author(s):

Steven Stack

Keyword(s):

Suicide Prevention ◽

Contagion Effects ◽

Long Term Impact

Abstract. Background: There has been no systematic work on the short- or long-term impact of the installation of crisis phones on suicides from bridges. The present study addresses this issue. Method: Data refer to 219 suicides from 1954 through 2013 on the Skyway Bridge in St. Petersburg, Florida. Six crisis phones with signs were installed in July 1999. Results: In the first decade after installation, the phones were used by 27 suicidal persons and credited with preventing 26 or 2.6 suicides a year. However, the net suicide count increased from 48 in the 13 years before installation of phones to 106 the following 13 years or by 4.5 additional suicides/year (t =3.512, p < .001). Conclusion: Although the phones prevented some suicides, there was a net increase after installation. The findings are interpreted with reference to suggestion/contagion effects including the emergence of a controversial bridge suicide blog.

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