A sequential approach to sampling design for time studies of cable yarding operations

1989 ◽  
Vol 19 (8) ◽  
pp. 973-980 ◽  
Author(s):  
Andrew F. Howard

Comprehensive sampling design including determination of the distribution, number of observations and specification of desired levels of precision is typically ignored in time studies of yarding operations. A computer-based data collection, processing, and analysis system was developed for time studies that permits improved sampling design. Data collection programs were written for continuous timing of yarding operations and downloaded on to hand-held computers equipped with real-time clocks. After each shift of observation, the time study data are uploaded to a portable microcomputer. The data are then processed through a series of programs that provide error checking, cataloging, and formatting in preparation for analysis. Data from three cable yarding operations were used in a study to assess the potential for sequential design and to determine precision levels obtainable from short-duration time studies. Confidence intervals were computed cumulatively and used to assess whether additional observation of a specific machine on a particular site was justified. The data collection, processing, and real-time analysis system shows promise as a technique for improving sampling design of time studies for timber harvesting operations through sequential analysis of the data.

2020 ◽  
Vol 42 (1) ◽  
pp. 149-164
Author(s):  
Bruce Talbot ◽  
Rasmus Astrup

Proximal sensing technologies are becoming widely used across a range of applications in environmental sciences. One of these applications is in the measurement of the ground surface in describing soil displacement impacts from wheeled and tracked machinery in the forest. Within a period of 2–3 years, the use photogrammetry, LiDAR, ultrasound and time-of-flight imaging based methods have been demonstrated in both experimental and operational settings. This review provides insight into the aims, sampling design, data capture and processing, and outcomes of papers dealing specifically with proximal sensing of soil displacement resulting from timber harvesting. The work reviewed includes examples of sensors mounted on tripods and rigs, on personal platforms including handheld and backpack mounted, on mobile platforms constituted by forwarders and skidders, as well as on unmanned aerial vehicles (UAVs). The review further highlights and discusses the benefits, challenges, and some of the shortcomings of the various technologies and their application as interpreted by the authors.The majority of the work reviewed reflects pioneering approaches and innovative applications of the technologies. The studies have been carried out almost simultaneously, building on little or no common experience, and the evolution of standardized methods is not yet fully apparent. Some of the issues that will likely need to be addressed in developing this field are (i) the tendency toward generating apparently excessively high resolution micro-topography models without demonstrating the need for or contribution of such resolutions on accuracy, (ii) the inadequacy of conventional manual measurements in verifying the accuracy of these methods at such high resolutions, and (iii) the lack of a common protocol for planning, carrying out, and reporting this type of study.


2020 ◽  
Vol 6 (2) ◽  
pp. 94
Author(s):  
Iin Nurbudiyani ◽  
Arna Purtina ◽  
Rita Rahmaniati

Penelitian ini bertujuan untuk mengetahui: 1) Langkah-langkah menanamkan nilai pendidikan karakter terhadap peserta didik; 2) Pelaksanaan pendidikan karakter dalam etika wirausaha (praktik kewirausahaan).  Penelitian ini dilakukan dengan metode kualitatif. Subjek Penelitian ini adalahkepala sekolah, Guru dan Peserta didik.Adapun prosedur penelitian ini yaitu: (1) Melakukan studi pendahuluan ke lokasi penelitian yaitu SMA Muhammadiyah Palangkaraya; (2) Menyusun instrumen penelitian; (3) Merancang prosedur pengambilan data;  (4) Pelaksanaan; dan 5) Analisis data. Teknik pengumpulan data melalui  wawancara tidak terstuktur, angket dan dokumentasi. Data yang diperoleh dianalisis menggunakan deskriptif kualitatif melalui reduksi data, penyajian data (display data), verifikasi dan  simpulan. Hasil penelitian menunjukkan bahwa: 1)  Langkah-langkah menanamkan nilai pendidikan karakter pada peserta didik terdiri dari beberapa tahapan; mulai dari perencanaan guru menyusun Rencana pembelajaran, pelaksanaan pembelajaran yang menarik dengan meintegrasikan nilai-nilai karakterdan evaluasi pembelajaran untuk mengukur dan melihat sejauhmana pendidikan karakter tersebut diterapkan dalam etika wirausaha; 2) Pelaksanaan pendidikan karakter dalam etika wirausaha di SMA Muhammadiyah 1 Palangkarayadengan menanamkan karakter disiplin, jujur, kreativitas, ulet, dan komunikatif secara umum dengan kategori baik, yang ditunjukkan: (a) Kegiatan praktikpenjualan langsung dengan kategori cukup baik; (b) Kegiatan praktik kewirausaan kelompok dengan kategori baik; (c) Penggunaan poster untuk meningkatkan gairah berwirausaha dengan kategori baik; (d) Pemberian reward bagi peserta didik maupun guru mendapatkan respon positif.___________________________________________________________________ This study aims to determine the: 1) Steps to instill the value of character education in students and to find out how to; 2) Implement character education in entrepreneurial ethics (entrepreneurial practice). This research was conducted using qualitative methods. The subjects of this study were teachers and students. The procedures for this research are: (1) Conducting a preliminary study to the research location, namely SMA Muhammadiyah Palangkaraya; (2) Develop research instruments; (3) Design data collection procedures; 4) Implementation; and (5) Analysis data collection techniques through unstructured interviews, observation, questionnaires and documentation. The data obtained were analyzed using qualitative descriptive through data reduction, data presentation (data display), verification and conclusions. The results showed that: 1) The steps to instill the value of character education in students consisted of several stages; starting from teacher planning in compiling entrepreneurial learning plans, implementing interesting learning by integrating character values, as well as conducting and evaluating to measure and see to what extent character education is well implemented by students; 2) Implementation of character education in entrepreneurial ethics at SMA Muhammadiyah 1 Palangkaraya by instilling disciplined, honest, creative, tenacious, and communicative characters. The results of the implementation of character education: (a) Direct selling practice activities in a fairly good category; (b) Entrepreneurship practice activities with good categories; (c) The use of posters to increase entrepreneurial enthusiasm with good categories; (d) Giving rewards to students and teachers getting a positive response.


2019 ◽  
Vol 4 (2) ◽  
pp. 356-362
Author(s):  
Jennifer W. Means ◽  
Casey McCaffrey

Purpose The use of real-time recording technology for clinical instruction allows student clinicians to more easily collect data, self-reflect, and move toward independence as supervisors continue to provide continuation of supportive methods. This article discusses how the use of high-definition real-time recording, Bluetooth technology, and embedded annotation may enhance the supervisory process. It also reports results of graduate students' perception of the benefits and satisfaction with the types of technology used. Method Survey data were collected from graduate students about their use and perceived benefits of advanced technology to support supervision during their 1st clinical experience. Results Survey results indicate that students found the use of their video recordings useful for self-evaluation, data collection, and therapy preparation. The students also perceived an increase in self-confidence through the use of the Bluetooth headsets as their supervisors could provide guidance and encouragement without interrupting the flow of their therapy sessions by entering the room to redirect them. Conclusions The use of video recording technology can provide opportunities for students to review: videos of prospective clients they will be treating, their treatment videos for self-assessment purposes, and for additional data collection. Bluetooth technology provides immediate communication between the clinical educator and the student. Students reported that the result of that communication can improve their self-confidence, perceived performance, and subsequent shift toward independence.


2018 ◽  
Vol 6 (2) ◽  
pp. 147 ◽  
Author(s):  
Ahmad Syahid ◽  
H. Husni

This study aims to analyze the character values ​​in Sirah Nabawiyah Ar-Rahiq Al-Makhtum by Syafiyyurrahman al-Mubarakfuri, so that it is revealed how the character education of the Prophet Muhammad. and analyze its relevance to current educational goals. The research method used is library research, the type of research approach is deductive and the analysis method is content analysis. Data collection techniques used were library techniques. This research succeeded in proving that prophetic values ​​based on the history of the Prophet Muhammad have a strong relevance to the concept of contemporary character education. Prophetic values ​​loaded with character education in this era, especially related to religiosity, honesty, tolerance, discipline, hard work, creative, independent, democracy, curiosity, national spirit, love of the motherland, respect for achievement, friendship, love for peace , likes to read, care about the environment, care about social, and responsibility.


Author(s):  
Mary Kay Gugerty ◽  
Dean Karlan

Monitoring data at the Ugandan Salama SHIELD Foundation revealed perfect repayment rates in its microfinance program. But rather than take these data at face value, a diligent program officer set out to determine if the data might be concealing other stories. In his efforts to investigate the truth behind the data, he made a number of decisions about what data to collect—and, importantly, what not to. But, as this case demonstrates, actionable data is only half the story; right-fit resources and systems are necessary to turn data into action. Readers will think critically about what data are necessary to answer key operational questions and will design data collection instruments to deliver these data. They will also consider ways of applying the CART principles to strengthen the data collection system and determine where the organization should focus its monitoring efforts.


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