56 research outputs found
Green trees preservation: A sustainable source of valuable mushrooms for Ethiopian local communities
No full text21 Pág.In Ethiopia, Pinus radiata and Pinus patula are extensively cultivated. Both plantations frequently serve as habitats for edible fungi, providing economic and ecological importance. Our study aims were: (i) to investigate how plantation age and tree species influence the variety of edible fungi and sporocarps production; (ii) to determine edaphic factors contributing to variations in sporocarps composition; and (iii) to establish a relationship between the most influencing edaphic factors and the production of valuable edible mushrooms for both plantation types. Sporocarps were collected weekly from permanent plots (100 m2) established in 5-, 14-, and 28-year-old stands of both species in 2020. From each plot, composite soil samples were also collected to determine explanatory edaphic variables for sporocarps production and composition. A total of 24 edible species, comprising 21 saprophytic and three ectomycorrhizal ones were identified. Agaricus campestroides, Morchella sp., Suillus luteus, Lepista sordida, and Tylopilus niger were found in both plantations. Sporocarp yields showed significant variation, with the highest mean production in 28-year-old stands of both Pinus stands. Differences in sporocarps variety were also observed between the two plantations, influenced by factors such as pH, nitrogen, phosphorus, potassium, and cation exchange capacity. Bovista dermoxantha, Coprinellus domesticus, and A. campestroides made contributions to the variety. The linear regression models indicated that the abundance of specific fungi was significantly predicted by organic matter. This insight into the nutrient requirements of various fungal species can inform for a better plantation management to produce both wood and non-wood forest products. Additionally, higher sporocarps production in older stands suggests that retaining patches of mature trees after the final cut can enhance fungal habitat, promoting diversity and yield. Thus, implementing this approach could provide supplementary income opportunities from mushroom sales and enhance the economic outputs of plantations, while mature trees could serve as a source of fungal inoculum for new plantations.Peer reviewe
Rurun Merga Silima in the Batak Karo Ethnic Group: A Social Semiotic Study
No full textThis thesis is entitled “Rurun Merga Silima in the Batak Karo Ethnic Group: A Social Semiotic Study”. This study aims to (1). Describe rurun merga silima in the Batak Karo ethnic group. (2). Describe the function of rurun merga silima in the Batak Karo ethnic group. (3). Describe the meaning of rurun merga silima in the Batak Karo ethnic group. The theory used in this study is the social semiotic theory by Pateda. The method used in this study is the qualitative method. The results obtained by the author from this study are the five clans in the Batak Karo ethnic group, including the following: Karo-karo has 17 sub-clans, each of which has a clan, namely Sekali Riong, Kemit Logos, Samura Tabong, Sitepu Ganding, Sinulingga Mangkok, Sinuraya Tabong, Sinuhaji Logos, Sinukaban Cinor, Surbakti Gajah, Kacaribu Mitut, Barus Cinor, Bukit Logos, Kaban Cinor, Ujung Logos, Purba Lagat, Ketaren Kolam and Gurusinga Pabelo. Ginting has 16 sub-merga, each of which has a rurun merga, namely babo Gajut, sugihen Nangkul, suka Mburak, rice Mbayak, anjartambun Kapor, garamata Mburak, jandibata Canggah, pase Gudam, munte Mburak, manik Mangat, sinusinga Mburak, seragih Mburak, jawak Lajor, tumangger Lajor, capah Ciak and gurupatih Gurah. Tarigan has 14 sub-merga, each of which has a rurun merga, namely kong Batu, jampang Lumbung, arid Mondan, gana-gana Gombong, Pekan Kawas, Tambak Turah, Purba Batu, Siberian Batu, Lintasit Segar, Tegur Batu, Tambun Mondan, Tua Mondan, Gerneng Kawas, and Kick Kawas. For Sembiring there are 19 sub merga, each of which has a rurun merga, namely twin merga, keloko Daram, sinulaki Rontang, sinupayung Ropo, brahmana Kawar, pandia Gobang, colia Kuliki, gurukinayan Pagoh, keling Gawah, pelawi Talah, depari Togong, putri Jambe, bunuaji Baji, meliala Jemput, maha Pasir, muham Bugan, pandebayar Jemput, sin Bugan ukapur and Jambe pressing. And warin-angin has 18 sub-merga, each of which has a rurun merga, namely mano Mundong, seshadow Rabun, pencawan Jambor, sinurat Tangko, perbesi Rabun, ulunjandi Ramban, penggarun Guni, pinem Jaren, uwir Sago, laksa Batonggan, singarimbun Kerangen, keliat Teger, kacinambun Njorang, wake up Teger, tanjung Tuluk, manjerang Batok, namohaji Gudong and sukatendel Gantang. The function of the rurun merga silima in the Karo Batak ethnic group is to make it easier to call someone and identify the origins of a person's merga. The meaning of rurun merga silima in the Karo Batak ethnicity is in the form of recognizing the character of a person's merga.110 PagesSkripsi Sarjan
Beginning teachers’ mathematical knowledge: What is needed?
No full textOver the past decade there has been growing interest in describing and measuring the kinds of mathematical knowledge needed by teachers. Such efforts are in parallel with the development of national standards for teachers, indicating levels of expectation across the years of teachers’ careers. This presentation provides an opportunity for teacher educators and teachers to consider the nature of mathematical knowledge needed by beginning teachers at all levels of schooling. Discussion will be informed by data from an ALTC funded national project that aims to improve the quality of pre-service teachers’ outcomes in mathematics and by the AAMT Standards framework
Shaping the future of mathematics education: Proceedings of the 33rd annual conference of the Mathematics Education Research Group of Australasia
No full textThese collected papers are a record of the proceedings of the 33rd Annual Conference of the Mathematics Education Research Group of Australasia entitled, Shaping the Future of Mathematics Education. The conference is held in Fremantle, as was the previous conference a decade earlier.
Keynote speakers are discussing issues that are emerging more sharply at the present time as the mathematics education community focus on the education of Indigenous children, the scope of the mathematics curriculum and ways in which the content might be taught effectively, and the significant role of technologies in teaching and learning in the twenty-first century.
Research papers are featured from mathematics educators from all states and territories of Australia, from colleagues in New Zealand, and from overseas — United Kingdom, Singapore, United States of America, India, Thailand, South Africa, and Indonesia. Some participants are not only new researchers but also new to the conference. Many have been aided by experienced colleagues via the supervision process within their university and also by the Early Bird system coordinated by MERGA and the Organising Committee. I wish to acknowledge the advice, comments, and suggestions given as part of the Early Bird system by experienced MERGA researchers. Their generosity in many ways repays the help and advice they received from the MERGA community earlier in their own careers.
All papers submitted for publication have been ‗double blind‘ reviewed by at least two experienced researchers and writers organised into review groups for the purpose. In some cases a third person also reviewed the paper. Only papers that have been accepted by two reviewers are published in these proceedings. In the ‗double blind‘ review process, neither the reviewer nor the author was named. Reviewers worked with a set of review guidelines produced by MERGA to work for consistency of outcome. My thanks are offered to the group coordinators, the reviewers, Emeritus Professor John Malone for his coordination of the process, and to the local Organising Committee.
This set of proceedings includes abstracts and full papers for refereed research presentations, short communications of developing research, roundtable discussions, and symposia. Thanks are due to the co-editors, Barry Kissane and Chris Hurst, for their diligence and support in editing and compiling these proceedings.
The conference has been organised by a group of mathematics educators from each of the five universities in Perth, the main education systems, and the Curriculum Council of Western Australia. There has been a wonderful sense of collaboration typical of mathematics educators in Western Australia. All has been achieved under the experienced and watchful eye of conference organiser, Dr. Jack Bana. My thanks and appreciation is offered to all.
Len Sparrow
Chair, Conference Organising Committe
Integrated weed management in chickpea (Cicer arietinum L.)
No full textThe poor competition ability of chickpea opens the door for weed to cause a serious yield loss. The experimental field is conducted to evaluate the integrated effects of pre-emergence herbicides and hand-weeding on weed control, yield components, yield, and their economic feasibility for cost effective weed control in chickpea. The experiment consisted of 12 treatments viz. pre-emergence s-metolachlor (1.0, 1.5 and 2.0 kg ha−1) and pendimethalin (1.0, 1.25 and 1.5 kg ha−1), each at three rates metolachlor, s-metolachlor + one-hand-weeding, pendimethalin + one-hand-weeding, two-hand-weeding, complete weed free and weedy checks arranged. The weed flora consisted of broadleaved and sedge with the relative densities of 95.24 and 4.76% at Haramaya district, and 93.72 and 6.28%, at Hirna district, respectively. Application of s-metolachlor and pendimethalin 1.0 kg ha−1 each supplemented with hand weeding 5 WAE significantly (p ≤ 0.01) affected the broadleaved weeds, sedges and weed dry weight at both sites. S-metolachlor 1.0 kg ha−1 supplemented with hand weeding 5 WAE gave the lowest total number of weeds (21.78 m−2) following the weed free check. Higher average grain yield (2344.41 kg ha−1 or 234.441 g m−2) was produced with s-metolachlor 1.0 kg ha−1 supplemented with one-hand-weeding 5 WAE following complete weed-free. The benefit gained from s-metolachlor and pendimethalin at 1.0 kg ha−1 each supplemented with one hand weeding 5 WAE were greater than the value recorded from the weedy check by 216% and 198 %, respectively. S-metolachlor 1.0 kg ha−1 supplemented with hand weeding 5 WAE treatments resulted in the highest grain yield and economic benefit. However, in case labour is constraint and s-metolachlor herbicide is timely available, pre emergence application of s-metolachlor at 2.0 kg ha−1 should be the alternative to preclude the yield loss and to ensure maximum benefit. Herbicides application is an integral part of farmer’s crop management in modern agricultural systems
Economic importance of chickpea: Production, value, and world trade
No full textChickpea is a valued crop and provides nutritious food for an expanding world population and will become increasingly important with climate change. The nutritional value of chickpea in terms of nutrition and body health has been recently emphasized frequently by nutritionist in health and food area in many countries around the world. Production ranks third after beans with a mean annual production of over 11.5 million tons with most of the production centered in India. Land area devoted to chickpea has increased in recent years and now stands at an estimated 14.56 million hectares. Production per unit area has slowly but steadily increased since 1961 at about 6 kg/ha per annum. Over 2.3 million tons of chickpea enter world markets annually to supplement the needs of countries unable to meet demand through domestic production. Australia, Canada, and Argentina are leading exporters. Chickpea is comprised of Desi and Kabuli types. The Desi type is characterized by relatively small angular seeds with various coloring and sometimes spotted. The Kabuli type is characterized by larger seed sizes that are smoother and generally light colored. Dal is a major use for chickpea in South Asia while hummus is widely popular in many parts of the world. Research efforts at ICRISAT, ICARDA, and national programs have slowly but steadily increased yield potential of chickpea germplasm
A Review on Agricultural Problems and Their Management in Ethiopia
No full textEthiopia’s agricultural production has been challenged by waterlogging, salinity, acidity, parasitic weed, and irrigation scheduling problems which has resulted in lower yields than the potential. Waterlogging is the main drainage problem in the small scale irrigation schemes in the Vertisols dominated highland areas while salinity and salinization is a common phenomenon in the large and medium scale irrigation schemes located in the lowlands of the country’s major river basins with predominantly salt affected soils. Soil acidity and associated low nutrient availability is one of the constraints to crop production on acid soils. Lime requirement for crops grown on acid soils is determined by the quality of liming material, status of soil fertility, crop species and varieties, crop management practices, and economic considerations. A considerable loss in growth and yield of many food and fodder crops is caused by root-parasitic flowering plants. Globally, Striga and Orobanche have a greater impact on human welfare than any other parasitic angiosperms because their hosts are subsistence crops in areas marginal for agriculture. In irrigated agriculture, efficient water management is an important element. Such practices can help bust sustainable production and maintain farm profitability in which there is limited water resource
Property tax in Riga
No full textBakalaura darba autors Gunita Merga izstrādāja darbu, kura tēma ir “Nekustamā īpašuma nodoklis Rīgā”. Bakalaura darba mērķis ir noteikt nekustamā īpašuma nodokļa administrēšanas problēmas Rīgas pilsētā, analizējot Rīgas domes Pašvaldības ieņēmumu pārvaldes darbību un tās rezultātus, uz kā pamata izvirzīt priekšlikumus administrēšanas pilnveidošanai. Mērķa sasniegšanai autors izvirza šādus uzdevumus: Izpētīt nodokļu administrēšanas funkcijas un principus nodokļu sistēmas veidošanā, analizēt nekustamā īpašuma nodokļa regulēšanu un tā izmaiņas Rīgā, izpētīt nekustamā īpašuma nodokļa ieņēmumus Rīgā un analizēt to dinamiku saistībā ar nodokļa izmaiņām, kā arī izdarīt secinājumus un izvirzīt priekšlikumus nekustamā īpašuma nodokļa administrēšanas pilnveidošanai. Pirmajā nodaļā tiek apskatīta nodokļu ietekme uz Latvijas tautsaimniecībā, kā arī vispārēja Latvijas nodokļu sistēmas principi un funkcijas. Otrajā nodaļā uzmanība tiek vērsta uz nekustamā īpašuma nodokļa būtību, analizējot Latvijas Republikas likuma normas tiek definēti un raksturoti jēdzienu: īpašums, nekustams īpašums un nekustamā īpašuma nodoklis, tiesiskais regulējums. Tā pat uzmanība tiek vērsta uz nekustamā īpašuma administrēšanas procesa teorētisko pusi, kadastrālās vērtības noteikšanu un maksāšanas kartību. Trešajā nodaļā ir aplūkotas nekustamā īpašuma pilnveidošanas iespējas, analizētas izmaiņas sakarā ar kadastrālā likuma grozījumiem, tā pat veikta aptauja, lai noskaidrotu respondentu viedokli par nekustamā īpašuma nodokli. Bakalaura darbs sastāv no 3 nodaļām, tā apjoms ir 66 lappuses. Tajā ir iekļauti 20 attēli, 5 tabulas un 2 pielikumi. Darbā izmantotas 37 bibliogrāfiskā saraksta vienības. Atslēgas vārdi: nodokļi, nekustamā īpašuma nodoklis, pašvaldības budžets.Bachelor's thesis is written by Gunita Merga. The topic of bachelor thesis ir “Property Tax in Riga”. The aim of the bachelor's thesis is to determine the real estate tax administration problems in Riga city by analyzing the activities of Riga City Council Municipal Revenue Department and its results, on the basis of which to make proposals for improvement of administration. In order to achieve the goal, the author proposes the following tasks: To study the functions and principles of tax administration in the formation of the tax system, to analyze the regulation of real estate tax in Riga and its changes, to investigate the real estate tax revenues in Riga and to analyze their dynamics in relation to tax changes, as well as draw conclusions and make suggestions for improving real estate tax administration. The first chapter discusses the impact of taxes on the Latvian economy, as well as the general principles and functions of the Latvian tax system. The second chapter focuses on the essence of the property tax, analyzing the norms of the Republic of Latvia Law defining and describing the concept: property, real estate and real estate tax, legal regulation. The same attention is drawn to the theoretical side of the real estate administration process, the determination of the cadastral value and the payment procedure. The third chapter discusses real estate development opportunities, changes in cadastral law changes, and even a survey to find out the respondents' opinion on cadastral changes. Bachelor’s thesis consist from three charpters, it is written on 66 pages. It includes 20 pictures, 5 tables and 2 attachments. Work uses 37 bibliographic list items. Keywords: taxes, real estate tax, Municipal budget
Green trees preservation: A sustainable source of valuable mushrooms for Ethiopian local communities
No full textThesis by publication in education: An autoethnographic perspective for educational researchers
No full textDespite its growing popularity, the thesis by publication is a less conventional format for doctoral dissertations in the field of education. The author successfully undertook a thesis by publication in education from 2012, to submission in 2014. This paper draws on both the literature in the field and the experiences of the author through an autoethnographic approach to explore some of the strengths and limitations of thesis by publication. Key reasons for adopting the thesis by publication mode are outlined, as well as consideration of which types of educational research are most suited to this mode. Institutional support mechanisms and personal attributes that can improve the likelihood of success in this mode are also explored, in addition to the challenges and issues that are particularly significant when producing a thesis by publication. A possible structure and organisation of a thesis by publication in education is also proposed, though this will be determined primarily by institutional policy. This paper will be of interest to prospective doctoral students and higher degree by research supervisors in education seeking to extend their knowledge and experience in this area
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