scholarly journals Layout Method of Multiseismic Detectors for Shallow Underground Excavation Applications

2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Dong-ze Qin ◽  
Jin-Shi Zhang

In this study, we propose effective monitoring equipment intended for monitoring the underground tunnel of illegal excavation (such as theft, jailbreak, and smuggling). It mainly detects the microseismic information produced by underground excavation in a short distance to detect the status of underground excavation. Based on the arrival time difference principle, the positioning mathematical models of the 5-1-1 layout method, 4-3 layout method, and 7-0-0 layout method are established, respectively. In the research process, the measurement and the placement error caused by the installation of a seismic detector are joined into the detectors. Simulation results show that the relative error and its average value are obtained when mining outside the monitoring area. The experiment results demonstrate that, first, the depth positioning error is positively affected by the number of seismic detectors. Then, the relative error of plane positioning can be reduced when the installation distance among detectors is increased. Finally, the main causes of location error include time measurement error, propagation velocity difference caused by terrain, and the performance of detector hardware. The array of a ground motion detector has a weak influence on it. These emerging trends will have profound impacts on application of an underground excavation system.

2019 ◽  
Vol 4 (3) ◽  
pp. 381-396
Author(s):  
Suo Gefei ◽  
Steve Kulich

Aiming at pooling the opinions of internationally and nationally known intercultural experts on the status and conceptualization of intercultural communication studies in China, this research project adopted a Delphi process. Exploratory questionnaires were sent to an identified set of experts (N = 45) via email for the first stage, responses (N = 34) compiled, evaluated, and questions edited; a more focused questionnaire redistributed to experts for the second stage (N = 20); and a summary of findings was checked and confirmed for the third stage (N = 15). Themes and theoretical issues were formulated through each stage, compiled, and where possible integrated. This research process has generated the following findings: (1) leading topics related to intercultural communication are identified; (2) major research methodologies adopted in each related field are examined; (3) highly cited authors and theories most applied in intercultural communication studies are ranked; (4) emerging trends in the field are listed; and (5) assessments and recommendations for the ongoing development, significance, and relevance of intercultural communication studies in the Chinese context are highlighted. Strengths and weaknesses of the results and this study are then noted toward future development of the field.


2020 ◽  
Author(s):  
Quang Ngoc Nguyen

Without a guideline or structure, conducting a literature review on a psychological construct might become a chaotic process . This canvas was built based on the author's experience in order to help psychological researchers classify, organize, and summarize the information relating to the psychological construct of interest into several essential aspects including definition, classification, measurement, sample, predictors and outcomes, mediators and moderators, interventions, and theories. For each aspect, there are some guiding questions which are expected to help researcher decice which information should be focused while examining scientific documents. The completely filled canvas should depict the status quo of the research on the psychological construct of interest, facilitating the research process.


2014 ◽  
Vol 4 (2) ◽  
pp. 157
Author(s):  
Maulana Firdaus ◽  
Radityo Pramoda ◽  
Maharani Yulisti

Penelitian ini bertujuan untuk mengkaji dampak letusan Gunung Kelud terhadap pelaku usaha perikanan khususnya di Kabupaten Kediri. Penelitian dilaksanakan pada bulan April-Mei 2014 denganfokus lokasi penelitian di Kecamatan Pare, Kabupaten Kediri yang merupakan sentra penghasil benih ikan lele. Data primer dan sekunder digunakan dalam penelitian ini. Informan ditentukan dengan menggunakan teknik purposive sampling. Data yang diperoleh kemudian dianalisis secara kualitatif. Hasil penelitian menunjukkan bahwa letusan Gunung Kelud sangat berdampak pada masyarakat perikanan di Kabupaten Kediri baik secara sosial maupun ekonomi. Dampak secara sosial berupa perubahan status pembudidaya, perubahan sosial dan perubahan mata pencaharian. Secara ekonomi, dampak letusan Gunung Kelud menyebabkan 274 pembudidaya di 16 kecamatan mengalami kerugian dengan total kerugian sebesar 3,9 milyar rupiah. Rata-rata nilai kerugian yang dialami oleh setiap pembudidaya adalah 14,4 juta rupiah per orang yang meliputi kematian ikan, kematian benih ikan, kematian induk ikan, rusaknya kolam ikan, serta rusaknya peralatan budidaya.Title: The Impact of Mount Kelud Eruption To Fisheries Bussinessin Kediri District, East Java ProvinceThis study aims to assess the impact of the Kelud eruption on fisheries sector in Kediri. The study was conducted in April-May 2014 with a focus on research location in Pare Subdistrict, KediriDistrict which is the catfish seed production centers. Primary and secondary data used in this study. Informants were selected using purposive sampling technique. Data were analyzed qualitatively. The results showed that the Mount Kelud eruption greatly affected to the fisheries sector in Kediri, both socially and economically. Social impact in the form of changes in the status of farmers, changes in social status and changes in livelihood. Economically, the impact of the Kelud eruption caused 274 farmers in 16 districts experienced a loss with a total loss of 3.9 billion dollars. The average value of the losses suffered by each cultivator is 14.4 million dollars per person death of seeds, death of fish, damage to fishponds, and the destruction of farming equipment.


2010 ◽  
pp. 144-162
Author(s):  
Victor M. Hernández-Gantes

Online education is becoming an important component ofcareer and technical education (CTE) in teacher preparationand at the graduate level. In the midst of such growth, andin response to questions about quality compared with traditional learning, there is a consensus that onlinecourses and programs should be designed based on the needs of adult learners. However, much of the literature inonline CTE lacks implicit connections to emerging notions ofadult development and learning. This article provides an overview of the status of online education in CTE at the postsecondary level, discusses related issues and current research focus, and highlights adult learning developmentsand the implications for curriculum design, instruction, anduse of technology. The article concludes with an outline of emerging trends bridging adult learning and onlineeducation relevant to career and technical education.


2019 ◽  
Vol 5 (1) ◽  
pp. 39-44
Author(s):  
Akhmad Sobarna ◽  
Aditya Prasetyo ◽  
Dicky Gunawan

The purpose of this study was to find out how much influence the use of snake ladder media in improving students' dribbling skills in basketball games at the IT Tourism Vocational School Nurul Imam. With a sample of XI class of 30 people consisting of 18 female students and 12 students, the research method used experiments with the design of The Randomize Pretest-Posttest Control Group Design. Treatment given is in the form of snake ladder playing media in the learning process. The research process lasted for 5 weeks with the results of the analyst showing the average value obtained by students at the IT Tourism Vocational School Nurul Imam when the pre-test was conducted at 22.33 and the post-test was 26.56. there is an increase even though it is not too large with an average increase of 4.2.


2020 ◽  
Vol 15 (2) ◽  
pp. 1-30 ◽  
Author(s):  
Wei Zhou ◽  
Zeshui Xu ◽  
Edmundas Kazimieras Zavadskas ◽  
Alfredas Laurinavičius

The Baltic Journal of Road and Bridge Engineering is a multidisciplinary journal, which provides a forum for a broad range of road and bridge engineering research. The topics such as the road and bridge research and design, the construction materials and technologies of roads and bridges, the construction financing and environmental issues, and the assessment management are included in the scope of the Baltic Journal of Road and Bridge Engineering investigation. Due to the reason that various road and bridge engineering related research directions are involved in this journal, it has become the first one that deals with the issues as mentioned above in Baltic countries. Therefore, it is believed that investigating the publications in the Baltic Journal of Road and Bridge Engineering assists researchers in great learning the development of road and bridge engineering research in Baltic countries. By analysing the annual publication distribution, the citation structure, the co-citation and cooperation networks, and the significant contributors in terms of countries and regions, institutions, cited journals and authors, the status of Baltic Journal of Road and Bridge Engineering is comprehensively presented. In addition, the emerging trends are revealed through the analyses of timeline view and burst detection. This study makes the contribution to the aspect of visualizing the complex and significant results based on objective and quantitative data. It provides readers with access to understand the development of Baltic Journal of Road and Bridge Engineering and helps researchers learn the hot issues in this journal clearly and directly.


2020 ◽  
Vol 13 (2) ◽  
pp. 262-266
Author(s):  
N. H. Tayade ◽  
S. V. Jogdand

Investigation on farm mechanization status of Kanker district Chhattisgarh was carried out for sustainable crop production. District falls in Chhattisgarh plains and Bastar plateau of agro climatic zones of Chhattisgarh having average rainfall varies from 1400 mm to 1500 mm where 90 % rainfall during the June to October. The total net sown area of the district is 2.37 lakh ha with cropping intensity around 122 %. To known the status of farm mechanization, level of mechanization was found out by considering available farm power sources namely human, animal and mechanical. A stratified multistage sampling design was applied considering block as a first stage, village as a second stage and cultivators are the final stage of the sampling. From Kanker district of Chhattisgarh. The 30 villages were selected from each seven block of Kanker district using Probability Proportional to Size (of Village). Then from each village, 10 cultivators were selected using random sampling. Primary data were collected from 300 cultivators from 30 villages. After selection of variables, a standard questionnaire was prepared to collect primary data. Average value of power availability, farm power consumption and present mechanization level is significantly highest in high productive blocks namely Charama, Kanker, Koilibeda in comparison to other four low productive blocks i.e. Antagarh, Bhanupratappur, Durgkondal and Narharpur block, respectively. Draft animal power available in study area was 0.41 bullock-pair per ha. The command area available per unit of power source for the marginal, small, medium and large farmers was 0.70, 2.01, 3.50 and 11.33 ha/bullock pair with over all availability of 2.42 ha per bullock-pair. However, tractor and power tiller manage the overall command area of 40.43 ha per tractor and 165.38 ha per power tiller. The mechanization level of Kanker district was found 1.37 kW ha-1.


2017 ◽  
Vol 7 (2) ◽  
pp. 162-170
Author(s):  
Dewa Gede Agung Gana Kumara

The purpose of this study was to determine the level of students’ competence of SMP Tangeb majoring in sculpture through the lesson study Habit-based formation Learning System involving teachers, lecturers and prospective teachers. This research method used classroom action approach through lesson study. The research process spanned two cycles. Instruments used in data collection included assessment of teaching practice, chararacter check list, questionnaire and participant observation sheet. The effectiveness of the approach could be analyzed to what extent was the average score of 38 students collected randomly in each cycle increased from the initial test score after the lesson was applied. The indicator of research success or research outcome target was where 80% of students achieved the average value above the minimal mark that was 75. From the PAP range of students’ achievement, students that reached the high criteria were 21 people while the moderate criteria were 17 people. From students’ learning attitude could be seen that 30 students (86%) were active, 33 (87%) were cooperative and students that were responsible were 36 students (94%). From this result, it could be said that the ability of VII grade students of SMP Seni Ukir Tangeb in attitudes of learning, knowledge and writing skills of English was in high category and above entrepreneurial attitude that was 50%. Thus the lesson study based on the formation of this habit could improve the English language skills of VII students of SMP Seni Ukir and their attitude in learning was more characteristic.


2019 ◽  
Vol 10 (02) ◽  
pp. 100-108
Author(s):  
Wahyu Rokhati

The background of this research was carried out because of the low activeness and learning outcomes of students in class III about the measurement of long units motivating the activeness and student learning outcomes of mathematics in Basic Competencies Using Measuring Tools in Problem Solving. This research is a Classroom Action Research with the subjects of third grade students of SD Negeri 1 Karanganyar with a total of 19 students. Data sources come from documents, students, and peers. Data collection techniques with test and non-test. The research process was carried out in two cycles, each cycle consisting of 2 meetings each meeting 2 lesson hours. To measure the ability of students in mastering the material that has been given, each end of the cycle carried out an evaluation. The results obtained from the data there is an increase in learning outcomes seen from the initial study before the action and after the action. The data about the learning outcomes obtained are as follows: the average grade of the class in the initial study was 53 with 21% mastery learning; the average value of cycle 1 is 61 with a 42% mastery learning; the average value of the second cycle is 72.5 with 95% mastery learning. It can be concluded that the use of the ladder playing method can increase the activeness and learning outcomes of students, especially the Long Unit Measurement material.


Author(s):  
Stephanie F. Hughes

Today, the complexity of so many emerging technologies requires anunderstanding of adjacent technologies often originating from multiple industries. Technology sequence analysis has been used by organizations, governments and industries to help make sense of the many variables impacting the evolution of technologies. This technique relies heavily on the input of experts who can offer perspectives on the status of current technologieswhile also highlighting the potential opportunities in the future. However, the volume and speed at which scientific research is accelerating is making it nearly impossible for even the most knowledgeable expert to stay current with research in their own industries. Today however, the use of big data search tools can help identify emerging trends around disruptive technologieswell before many of the experts have fully grasped the impact of these technologies. Despite the fear of many in the intelligence community that these tools will make their jobs obsolete, we expect that the value of the intelligence expert will increase given their unique knowledge of relevant data sources and how to connect the data in meaningful ways to derive value for the firm. We propose a new forecasting model that incorporates a combination of technologysequencing analysis and big data tools within the organization while also leveraging experts from across the open innovation spectrum. This new model, informed by current client engagements, has the potential to create significant competitive advantages for organizations as they benefit from expanded search breadth, search depth and search speed all while leveraging a range of internal and external experts to make sense of the rapidly changingtechnological landscape confronting their environment.


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