bluuebunny/crossref_metadata_2025 huggingface dataset:
Composition and classification of chromites in the Fiskenæsset anorthosite complex
Authors: Ghisler M
Published: June 2021

Chromite compositions from about 30 different localities throughout the whole of the Fiskenæsset region were studied in detail with the microprobe. The samples were selected on the basis of Cr-Fe X-ray fluorescence analyses on chromite concentrates of 183 samples (Ghisler, in press) and after examination of a large number of polished sections. They are considered as presenting the complete composition range within the area. For a detailed presentation of methods and results the reader is referred to Ghisler (in press). Here only the main results are given of the composition of chromite in terms of the elements Cr, Al, Fe and Mg, which are necessary for their classification. Ten grains were assayed within each polished section, based upon measurements at several points in each grain. The results presented below are thus based upon the composition of about 300 grains, with a total of about 1000 point analyses.
Field relationships and petrology of leucocratic schists from the Ravns Storø group near Fiskenæsset
Authors: Friend C.R.L
Published: June 2021

During field work in 1971-72 whilst mapping the Ravns Storø amphibolite belt (Andersen & Friend, 1973) a series of leucocratic schists were found. These occur along the southceast side of the belt on the islands Íkátup nunâ, Sarqarigsup nunâ, Qagssikasaup nunâ and lkerasatsiaup nunâ. These rocks are initially striking because of their colour, paIe cream or yellowish, with the frequent development of spectacular garbenschiefer textures (Spry, 1969) in paIe brown, honey or colourless amphiboles (fig. 41).
Investigations of satellite images
Authors: Henriksen N
Published: June 2021

The National Aeronautics and Space Administration (NASA) of the United States on 23rd July 1972 launched a satellite with the purpose of investigating the Earth's natural resources and their potential use. The satellite, named ERT8-1 (Earth Resources Technology Satellite), circles the globe 14 times a day in a near-polar, sunsynchronous orbit at a height of 912 km and produces images in 4 spectral bands. Each image covers an area of 185 X 185 km. The image data is stored at the Eros Data Center in the U.S.A. and from there made available for scientific investigation in all countries.
Reconnaissance of the Thule group and underlying basement rocks between Inglefield Bredning and Melville Bugt, western North Greenland
Authors: Dawes P.R
Published: June 2021

Field work was undertaken in August and September using boat transport locally bired from Avatak Henson of Moriussaq and Innuterssuak Uvdloriak of Siorapaluk. Travel from Thule Air Base to headquarters at Thule at the end of July was by D.S. Coastguard icebreaker Westwind. The work was a southerly continuation of the coastal programme started in 1971 (Dawes, 1972). About 1000 km of coastline was traversed including Herbert ø, Northumberland ø, Haklyut ø, Saunders ø and Wolstenholme ø. Heavy ice conditions in mid-September prevented penetration into the fjords between Kap York and Savigsivik.
Investigations on the Quaternary deposits in the Godthåbsfjord area, southern West Greenland
Authors: Weidick A
Published: June 2021

A reconnaissance of the Quaternary deposits around Godthåbsfjord was carried out during the summer with the assistance of Flemming Damslund. The field work represented a northerly continuation of the reconnaissance of 1973 in the Fiskenæsset area (Weidick, 1974) and was made with the purpose of collecting information for tbe Quaternary Map Sheet 1:500 000 Frederikshåbs Isblink - Søndre Strømfjord. The area surveyed extended from Nordlandet and the islands west of the town of Godthåb to the inner branches of Godtbåbsfjord at Kangersuneq (fig. 11).
New evidence concerning the original relationships of early Precambrian volcanics and anorthosites in the Fiskenæsset region, southern West Greenland
Authors: Escher J.C , Myers J.S
Published: June 2021

With detailed mapping of the Fiskenæsset region nearing completion, the authors started coordination and synthesis of the geology of the region as a whole, in the fieId, during the summer. The main lithologies of the region are quartzo-feldspathic gneisses, gneissose granites, amphibolites and anorthosite, with minor amounts of ultramafic rocks and metasediments. Their relationships, composition and structure have been summarised by Kalsbeek & Myers (1973). Most of the quartzo-feldspathic gneisses appear to be derived from acid and intermediate intrusions into the older amphibolite and anorthosite units (Myers, in press). These gneisses were themselves deformed and then cut by thick sheets of porphyritic granite, Ilivertalik granite, in the north of the region.
Age relations of the Precambrian Mârmorilik Marble Formation, central West Greenland
Authors: Garde A.A , Pulvertaft T.C.R
Published: June 2021

The Mârmorilik Formation is one of the most important metasedimentary formations in the Precambriah of Greenland. lt is the host rock of the Sorte Engel (Black Angel) zinc-lead ore body, it is the largest potential source of calcitelimestone in West Greenland, and it is a striking marker horizon which greatly facilitates the recognition of major structures in tile Precambtian basement. The formation is composed almostentirely or carbonate rock (dolomite arid calcite marbles); and the original depositional thickness of these rocks has been estimated to be more than 1 km (Henderson & Pulvertaft, 1967) an order of thickness that one of us (A.A.G.) has confirmed during recent detailed mapping south-east of Mârmorilik.
Investigations on the Lower Eleonore Bay Group in the Alpefjord region, central East Greenland
Authors: Caby R
Published: June 2021

The Lower Eleonore Bay Group outcropping on the eastern flank of the 'central metamorphic complex' and in the Alpefjord region comprises a sedimentary sequence more than 8000 m thick. It is overlain concordantly by the Upper Eleonore Bay Group, Tillite Group (Eocambrian) and Cambro-Ordovician sediments.
Geochemical prospecting at Mesters Vig, central East Greenland and at Mârmorilik, central West Greenland
Authors: Cooke H.R
Published: June 2021

A prospecting method used in 1975 in Greenland and reported briefly on here measures the total cold extractable amount of seven heavy metals, Zn, Pb, Cu, Co, Ni, Sn and Ag. The primary aim of the method is to discover and outline metal anomalies but not to determine their metal content accurateIy. Once an anomaly is targeted this can be done by more detailed foIlow-up surveys. The two areas chosen to test the suitability of the method to Greenland conditions, were the lead-zinc mining district of Mesters Vig on the east coast and the Sorte Engel (Black Angel) mine at MârmoriIik on the west coast. The traverses run show strong anomalies over kriown veins (figs 37 & 38, AA' & CC'; fig. 39, GG' & HH'), as well as indicatingpreviously unknown mineralisation (fig. 38, BB'; the western anomaly in fig. 39, HH').
Progress in calibrating an X-ray spectrometer
Authors: Sørensen I
Published: June 2021

Information on the X-ray fluorescence spectrometry carried out at the Survey has been briefly presented elsewhere (Sørensen, 1975). This note describes the progress made in developing a calibration and matrix correction procedure.
Precambrian and Tertiary geology between Kangerdlugssuaq and Angmagssalik, East Greenland
Authors: Bridgewater D , Davis F.B , Gill R.C.O , Gorman B.E , Myers J.S , Pedersen S , Taylor P
Published: June 2021

The preliminary results of a reconnaissance survey of the coast between Kangerdlugssuaq and Angmagssalik are summarized. The Archaean gneiss complex between Kangerdlugssuaq and Kap Japetus Steenstrup is fairly uniform and comprises granitoid gneisses with inclusions of supracrustal rocks, layered basic igneous complexes and older gneisses. Inland areas generally show low deformation states, large scale recumbent folds, and rocks are in granulite facies, whereas a belt of stronger deformation, steep foliation and amphibolite facies matamorphism extends alng the outer coast. To the south of Kap Japetus Steenstrup, Archaean rocks are strongly deformed in the Nagssugtoqidian mobile belt and granulite facies rocks are retrograded to amphibolite facies, except in pods of low deformation, between 2800--2600 m.y. ago. Large bodies of diorite and granodiorite (the Blokken gneisses) were emplaced and metamorphosed in amphibolite facies 2400 m.y. ago, and around Angmagssalik a complex of Ieuco-norite and charnockite was emplaced in granulite facies and caused coarse recrystallization of the adjacent gneisses. Post-tectonic igneous intrusions ranging from ultramafic to granite were intruded 1600 m.y. ago. Numerous Tertiary dykes and plutonic complexes ranging from gabbro to granite were emplaced along the coast between Tasilaq and Kangerdlugssuaq 60-35 m.y. ago.
The Tertiary geology of Hold with Hope, northern East Greenland
Authors: Upton B.G.J , Emeleus C.H
Published: June 2021

The Hold with Hope peninsula, between 73° 25'N and 74°05'N, is one of the major outcrop areas of Tertiary volcanic rocks in the East Greenland coastal area from 70°-76°N. The peninsula measures approximately 75 km (N-S) by 45 km (E-W) and rises to 1509 m in the ice-covered Spaths Plateau. The area is more or less bisected by the major eastward-draining valley of Tobias Dal (fig. 32). The authors spent sixty days in the area from late June to late August, 1976, mapping on the 1:250000 scale. The aims were to establish (a) the lava stratigraphy, (b) the historical evolution ofthe Tertiary volcanic rocks, (c) to extend the reconnaissance mapping of the Lauge Koch expeditions (Koch & Haller, 1971) and (d) to sample as widely as possibie the Tertiary rock formations. In addition, a brief reconnaissance was made to Wollaston Forland (74° 20'N).
Notes on the palaeogeographical setting of the Eocambrian tillite-bearing sequence of southern Peary Land, North Greenland
Authors: Clemmensen L.B
Published: June 2021

The Morænesø Formation is a tillite-bearing unit (Jepsen, 1971a) occurring in southern Peary Land (fig. 3). It follows stratigraphically the Precambrian Inuiteq Sø Formation (Jepsen, 1971a) and is in tuen overlain by the Eocambrian or early Cambrian Portfjeld Formation (Jepsen, 1971a). On J. C. Christensen Land and Valdemar Gliickstadt Land (fig. 3) the Campanuladal Formation (~ Campanuladal Sandstones and Limestones of Adams & Cowie, 1953) overlies Precambrian basalts (fig. 4) and is capped by either the Fyns Sø Formation (Fyn Sø Dolomite of Adams & Cowie, 1953) or the Portfjeld Formation.
An occurrence of ironstone enclaves east of Sukkertoppen, southern West Greenland
Authors: Hall R.P
Published: June 2021

Helicopter reconnaissance mapping began in 1976 in the Godthåbsfjord region (Allaart et al., 1977) progressed northwards as far as Evighedsfjord, north of Sukkertoppen during the summer of 1977 (Allaart et al., this report). Amitsoq and Nfik type gneisses were widely recognised in the inner Godthåbsfjord region and the stratigraphy determined from coastal work by McGregor (1973) was corroborated. Friend & Hall (1977) have described the discordant relationship of Nfik gneiss sheets to the older Amitsoq banded gneisses in the Ivisartoq area. North of the Ataneq fauit, which runs from Isua south-west into Godthåbsfjord, amphibolite horizons occur as complex interference fold structures within the predominant homogeneous, poorly foliated granitic (sensu lato) bodies such as the Taserssuaq granodiorite (Allaart et al., 1977) which are believed by the field geologists to be of Nfik age. These rocks grade into gneisses and pegmatites rich in amphibolite agmatite and/or enclaves which continue to Evighedsfjord in amphibolite to granulite facies.
Precambrian studies in the Buksefjorden region, southern West Greenland Report on the last field season in the programme 1972–1979
Authors: Chadwick B , Coe K , Nutman A
Published: June 2021

The 1977 field season was the last in the series of six planned by GGU and the University of Exeter for the mapping of the Buksefjorden region (fig. 23). As in some of the earlier years, operations were mounted from a base at Nordafar. Support was provided by the GGU motor cutter N. V. Ussing throughout the season and on four days by helicopter from Greenlandair Charter A/S. We wish to acknowledge the assistance provided by officials at Nordafar, by Mr. Dave Pedersen of Greenlandair Charter A/S and especiaIly by skipper Flemming Nielsen. We also wish to record the valuable contribution made during the season by M. Ramakrishnan of the Geological Survey of India who worked with the group, nominally as an assistant. The weather was exceptionally good and tbis contributed to the smooth running of the programme.
Preliminary geochemical work on the Ilímaussaq alkaline intrusion, South Greenland
Authors: Bailey J.C , Gwozdz R , Rose-Hansen J , Sørensen H
Published: June 2021

As part of the geological investigation of the Ilimaussaq intrusion (Sørensen, 1970; Ferguson, 1964; Andersen, et al., 1973; Sørensen et al., 1974), trace-element analyses have been performed on carefully chosen rock samples. Material was selected on the basis of detailed field mapping and with particular attention paid to its fresh and representative nature; in every case more than 15 kg was obtained by blasting. The samples have aiready been used for the separation of accessory ore minerals and for analysis of fluid inclusions. To date, the rocks have been analysed for trace elements by neutron activation (R.G.) and X-ray fluorescence (J.B.) analysis. Comparisons with earlier analyticai results indicate closest agreement with the work of Gerasimovsky (1969), except for the element Ga where his results are consistently higher. Experiments by Ib Sørensen (GGU Chemical Laboratory) indicate that fused samples yield low totals for many Ilimaussaq rocks; the absorption effects of heavy minor elements (Zr, Nb, REE) on the light major elements will be quantitatively corrected for. Analyses by isotope fluorescence, delayed neutron analysis, X-ray spectrometry and other techniques are in progress.
Field work in uranium geology and prospecting, northern East Greenland
Authors: Steenfelt A , Nielsen B.L
Published: June 2021

The field activity in 1977 completed a 5-year programme of exploration for uranium in northem East Greenland from 72° to 76°N (Nielsen & Larsen, 1974; Nielsen & Steenfelt, 1975; Steenfelt, 1976). The following account refers to the field activities of 1976 and 1977. As in previous years the group undertaking uranium geology and exploration was joined by small field teams working with various other geological subjects (see e.g. Hald, Thyrsted, this report), giving a total number of about 25 participants. All field teams were supported from the base camp in Stordal, Hudson Land (fig. 31).
Structural and metamorphic studies in the East Greenland Caledonides between 72° and 74°N
Authors: Thyrsted T
Published: June 2021

In 1975 and 1976 investigations were carried out in the East Greenland Caledonides in the region between 72° and 74°N with special reference to basement--cover relationships and regional metamorphic studies and backed up by isotopic studies (Friderichsen & Higgins, 1976; Higgins et al., 1977). In 1977 the work comprised mainly metamorphic investigations. Short descriptions of the localities visited are given below.
Systematic 1:500 000 mapping in the Peary Land region, North Greenland
Authors: Henriksen N
Published: June 2021

A three year systematic field mapping programme in the Peary Land region, north of c. lat. 81° N and east of c. long 40° W, was initiated in the summer of 1978 with the aim of producing a 1:500000 map sheet of eastern North Greenland and investigating the geological framework of the region. The expedition was carried out in cooperation with a seven man group from the Geodetic Institute, Copenhagen, who undertook a general surveying programme establishing ground control points for a new topographic map of North Greenland.
Compilation of 1:500 000 reconnaissance mapping in the Precambrian of the Evighedsfjord – Søndre Strømfjord – Itivdleq region, southern West Greenland
Authors: Allaart J.H , Jensen S.B
Published: June 2021

The three years reconnaissance mapping programme for the 1:500 000 map sheet Frederikshåb Isblink - Søndre Strømfjord (Allaart et al., 1977,1978) was completed during the 1978 summer season. This summer's activity was concentrated in the area between Evighedsfjord and the northem boundary of the map sheet at latitude 66°45'N, and west of longitude 51°30'W (fig. 26). The area north-east of the Sukkertoppen Iskappe was reconnoitred during the summer of 1969 (Eseher et al., 1970). The area around Itivdleq and further north has been mapped more recently by geologists from the University of Liverpool under the direction of J. Watterson (1974). The mapping team in 1978 comprised two geologists based on the GGU cutter J. F. Johnstrup; periodic reconnaissance with Jet Ranger and Bell 204 helicopters was undertaken. The guidance of J. Watterson in the area around Itivdleq and Kangerdluarssuk fjords was greatly appreciated.
Observations on the Upper Permian of Wegener Halvø, East Greenland
Authors: Stemmerik L
Published: June 2021

The Upper Permian sediments of East Greenland are exposed from Scoresby Land in the south to Clavering Ø in the north (fig. 30). The deposits on Wegener Halvø appear to be situated on the eastern side of the southern end of an elongated, approximately 80 km wide, sedimentary basin (Birkelund & Perch-Nielsen, 1976). Whether this basin extended northwards to include the Upper Permian deposits of North Greenland, has yet to be established.
The Zig-Zag Dal Basalt Formation, North Greenland
Authors: Jepsen H.F , Kalsbeek F , Suthren R.J
Published: June 2021

The Zig-Zag Dal Basalt Formation is a new formation named after a valley in the central part of Mylius-Erichsen Land (fig. 11). The occurrence of volcanic rocks in this region was first reported by the Greenarctic Consortium in 1969 (personal communication to GGU), and the first description of the basaltic sequence was published by Jepsen & Kalsbeek (1979).
Carbonate debris flows in the Cambrian of south-west Peary Land, eastern North Greenland
Authors: Ineson J.R
Published: June 2021

In south-western Peary Land a thick carbonate dominated sequence of Early to Late Cambrian Age conformably overlies the Early Cambrian Buen Formation, and is overlain, unconformably, by the Wandel Valley Formation of Early-Middle Ordovician age (Peel, 1979; Palmer & Peel, 1979). This sequence is subdivided into the Brønlund Fjord Group and the overlying Tavsens Iskappe Group (Peel, 1979; Ineson & Peel, this report). The Brønlund Fjord Group characteristically forms resistant bluffs along the north side of Wansel Dal from J. P. Koch Fjord in the west to Independence Fjord (fig. 20) in the east. The Tavsens Iskappe Group is confined to western areas by the south-easterly overstep of the Wandel Valley Formation.
AN IoT-BASED POWER CONTROL AND MONITORING SYSTEM FOR LOW-VOLTAGE DISTRIBUTION NETWORKS
Authors: Khoa Ngô Minh , Đại Lê Văn , Tùng Đoàn Đức , Toàn Nguyễn An
Published: June 2021

Trong những năm gần đây, Internet of Things (IoT) đã trở thành một chủ đề về xã hội, kỹ thuật và kinh tế đang được quan tâm đặc biệt. Bài báo này nhằm mục đích nghiên cứu, thiết kế, kiểm tra và triển khai một hệ thống điều khiển và giám sát điện năng dựa trên công nghệ IoT. Hệ thống này có thể được điều khiển và giám sát từ xa bằng cách sử dụng các thiết bị IoT thông qua máy tính cá nhân (PC) hoặc điện thoại thông minh mà nó được kết nối với mạng Internet. Để đạt được mục tiêu này, một hệ thống hoàn chỉnh bao gồm thiết bị thông minh, cơ sở dữ liệu đám mây, tương tác lập trình và hệ phần cứng được đề xuất để nghiên cứu. Các đại lượng điện bao gồm điện áp, dòng điện, công suất tác dụng và điện năng tiêu thụ được đo lường, hiển thị và giám sát trong suốt thời gian thực. Bên cạnh đó, một kỹ thuật quản lý nhu cầu phụ tải (DSM) cũng được tích hợp vào trong hệ thống này để quản lý hiệu quả sự tiêu thụ năng lượng ở phía phụ tải với mục đích nhằm cắt giảm chi phí phát sinh đối với phía nguồn cấp. Cuối cùng, hệ thống này cho phép toàn bộ dữ liệu giám sát tích trữ trong cơ sở dữ liệu đám mây có thể được phân tích và báo cáo cho các mục đích xa hơn.
VỀ SỰ TỒN TẠI VÔ HẠN NGHIỆM YẾU CỦA BÀI TOÁN KIRCHHOFF THỨ
Authors: Thủy Phạm Thị , Hương Đỗ Thị Mai
Published: June 2021

Trong bài báo bày, chúng tôi nghiên cứu sự tồn tại vô hạn nghiệm yếu của bài toán Kirchhoff chứa toán tử vi tích phân:trong đó λ là tham số thực và Ω là một miền mở bị chặn trong R3 với biên ∂Ω Lipschitz, s ∈ (3/4, 1), f là hàm liên tục thỏa mãn một số điều kiện thích hợp. Sử dụng Định lý Fountain và phương pháp biến phân trong không gian Sobolev thứ, chúng tôi chứng minh sự tồn tại vô hạn nghiệm yếu với năng lượng không bị chặn của bài toán trên.
THE METHOD PROVING INEQUALITY BY USING TANGENTIAL CURVE
Authors: Tuấn Lê Anh
Published: June 2021

Bất đẳng thức và các vấn đề liên quan là một vấn đề đang ngày càng phát triển và thu hút được sự quan tâm của nhiều người nghiên cứu toán sơ cấp trong và ngoài nước. Các vấn đề về bất đẳng thức chiếm một vị trí khá quan trọng đối với toán sơ cấp và được sử dụng tương đối nhiều trong đề thi các kỳ thi học sinh giỏi quốc gia và quốc tế. Chúng ta biết có rất nhiều kỹ thuật, phương pháp chứng minh bất đẳng thức. Với mục tiêu phát triển các phương pháp và kỹ thuật chứng minh bất đẳng thức, trong bài báo này, bằng việc sử dụng bất đẳng thức Jensen mở rộng, chúng tôi phát triển phương pháp tiếp tuyến thành phương pháp đường cong tiếp xúc để chứng minh một số bài toán bất đẳng thức với điều kiện không tuyến tính.
CHẾ TẠO THAN HOẠT TÍNH TỪ VỎ CÂY CHÙM NGÂY VÀ ỨNG DỤNG HẤP PHỤ Cu(II) TRONG MÔI TRƯỜNG NƯỚC
Authors: Tú Anh Dương Thị , Cường Đoàn Mạnh
Published: June 2021

Than hoạt tính (M1) được chế tạo từ vỏ cây chùm ngây bằng cách biến tính bởi H3PO4 và Na2CO3, được sử dụng để loại bỏ ion Cu(II)  khỏi dung dịch nước. Một số đặc điểm hóa lý của M1 đã được nghiên cứu bằng kỹ thuật kính hiển vi điện tử quét (SEM) và quang phổ tán xạ năng lượng (EDS). Ảnh hưởng của pH (2,0 - 6,0), thời gian hấp phụ (30 - 180 phút) và lượng chất hấp phụ (0,025 - 0,20 gam) đến hiệu quả hấp phụ Cu(II) của M1 cũng được nghiên cứu. Kết quả cho thấy, thời gian đạt cân bằng hấp phụ, giá trị pH và lượng chất hấp phụ tối ưu cho quá trình hấp phụ Cu(II) lần lượt là 120 phút, pH bằng 5 và 0,10 gam. Dung lượng hấp phụ cực đại của M1 là 95,24 mg/g, có nghĩa là M1 có thể hoạt động như một chất hấp phụ để loại bỏ khá dễ dàng Cu (II) khỏi dung dịch nước.
ĐỀ XUẤT CÁCH KHAI THÁC MỐI QUAN HỆ LIÊN MÔN TOÁN - TIN TRONG DẠY HỌC GIẢI MỘT SỐ BÀI TẬP VỀ BIỂU THỨC ĐẠI SỐ CHO HỌC SINH LỚP 7
Authors: Quyên Ngô Thị Tú , Trang Nguyễn Như
Published: June 2021

Trên cơ sở xem xét các nội dung môn Toán và môn Tin cùng được dạy trong chương trình lớp 7, bài báo này nghiên cứu, đề xuất cách khai thác mối quan hệ liên môn Toán - Tin để dạy học giải một số bài tập về biểu thức đại số với sự hỗ trợ của chương trình bảng tính Excel. Các kết quả thu được nhờ phân tích, tổng hợp lý thuyết và nghiên cứu thực tiễn dạy học môn Toán, Tin học tại trường phổ thông. Kết quả nghiên cứu đã xác định được một số điểm tương đồng về nội dung trong chương trình lớp 7 của môn Toán và môn Tin học, đồng thời đề xuất và minh họa được cách khai thác mối quan hệ liên môn Toán - Tin để giải một số bài tập về biểu thức đại số. Thông qua việc giải bài tập, giúp học sinh ôn tập, củng cố kiến thức và thấy rõ hơn ứng dụng của tin học trong học tập cũng như trong cuộc sống.
LỰA CHỌN CÁC CHỈ SỐ QUAN TRỌNG CHO MÔ HÌNH HỌC MÁY ỨNG DỤNG TRONG GIAO DỊCH NGOẠI HỐI
Authors: Hoàn Mai Văn , Chung Đào Trần , Diện Vũ Văn
Published: June 2021

Lựa chọn các thuộc tính tốt cho các mô hình học máy cũng tương tự như việc lựa chọn các chỉ số tối ưu sẽ giúp ích cho việc nâng cao kết quả dự đoán xu hướng của thị trường ngoại hối, chứng khoán dựa trên các mô hình học máy luôn được các nhà đầu tư quan tâm. Trong bài báo này tập trung nghiên cứu giải quyết bài toán bằng cách nào có thể chọn lựa ra được những thuộc tính tốt nhất trong rất nhiều các thuộc tính ban đầu để phục vụ việc giảm chiều dữ liệu nâng cao tốc độ huấn luyện cho mô hình học máy. Phương pháp nhóm tác giả thực hiện gồm 3 bước chính: đầu tiên thu thập dữ liệu liên quan bao gồm các chỉ số được sử dụng phổ biến trong lĩnh vực ngoại hối; tiếp theo, dữ liệu được chuẩn hóa và gán nhãn; sau cùng, sử dụng thuật toán Random Uniform Forests với các thông tin về độ quan trọng của các thuộc tính để lựa chọn ra những chỉ số có lợi cho việc dự đoán. Kết quả nghiên cứu đã chỉ ra, trong 17 chỉ số thông dụng trong lĩnh vực nhóm đang quan tâm thì 05 chỉ số (vol, cci, adx, ar và chv) có ảnh hưởng nhất đến kết quả phân lớp dữ liệu có lợi cho mô hình học máy, cải thiện hiệu năng và tốc độ tính toán của các mô hình do số chiều dữ liệu được giảm xuống.
IMPLEMENTATION OF THE RAD MODEL OF SOFTWARE APPLICATION FOR POPULATION DATA MANAGEMENT VILLAGE OF SUKAWENING BOGOR
Authors: Sismadi Sismadi
Published: June 2021

Public administration services for the population are very important for management, safe data, good storage, easy search when needed. This condition has not been fulfilled if data management is done manually with large amounts of data. Sukawening village, located in the southern part of Bogor, experiences this condition, the management of population data is done manually with the help of Microsoft Excel, which is an obstacle in realizing resident administrative services, including SKU, births, deaths, moving and arrival files. Solutions are needed to realize fast, efficient, and safe services for residents from lost and damaged conditions. The solution to the problem used in this research is to build an application system that is intended to manage population data. The system is built based on the web with the RAD model, a Codeigniter framework tool. With the realization of the application system, the management of population data in the Sukawening village is as expected.
ПОШИРЕНІСТЬ ЗУБОЩЕЛЕПНИХ АНОМАЛІЙ СЕРЕД ДІТЕЙ ШКІЛЬНОГО ВІКУ
Authors: Лесіцький М.Ю. , Фур М.Б. , Машкаринець О.О.
Published: June 2021

Зубощелепні аномалії (ЗЩА) відносяться до основних стоматологічних захворювань та займають друге місце після карієсу зубів у світі. За даними вітчизняних науковців згідно показників епідеміологічних дос-ліджень поширеність зубощелепних аномалій у дітей різних регіонів України коливається в межах 24,43 –83,33%, що свідчить про значну варіабельність отриманих даних. Вивчення поширеності зубощелеп-них аномалій, в тому числі окремих нозологічних форм, має вагоме значення для організації ортодон-тичної допомоги дитячому населенню та створення бази даних щодо захворюваності по країні. Тому ме-тою дослідження є оцінка поширеності та структу-ри зубощелепних аномалій у дітей шкільного віку. Для вивчення поширеності зубощелепних аномалій було обстежено 1167 дітей віком 6-16 років. Виявлено, що поширеність зубощелепних аномалій у обстежених дітей, в середньому, складає 63,67±1,41 %. У дітей 6-9 років поширеність ЗЩА становить 57,11±2,43 %, до 10-12 років – зростає до 66,23±2,71 %. Серед групи 13-16-річних дітей у 68,01±2,21 % виявлена ортодон-тична патологія. Встановлено два піки зростання поширеності зубощелепних аномалій – 8 років (70,43±4,26 %) та 12 років (71,50±4,47 %). Результа-ти проведеного дослідження показують, що, в серед-ньому, фізіологічний прикус встановлено в 36,33±1,41% випадків. Аномалії І класу за Енглем діа-гностували у 44,30±1,45%, аномалії ІІ класу – у 16,03±1,07%, тоді як аномалії ІІІ класу – лише у 3,34±0,53 % дітей. Серед дітей із ЗЩА аномалії І класу за Енглем зустрічалися у 69,58±1,69 % випадків, аномалії ІІ та ІІІ класів – у 25,17±1,59 % та 5,25±0,82 % обстежених осіб. Таким чином, при оцінці пошире-ності зубощелепних аномалій у дітей різного віку та у залежності від періоду прикусу нами визначено, що з 6 до 8 років значення поширеності зубощелепних аномалій достовірно зростає. У період 9-11 років спостерігається тенденція до зниження відсотка осіб із ЗЩА, що може свідчити про наявність проце-сів саморегуляції під час прорізування премолярів та ікол. До 12-16 років поширеність зубощелепних ано-малій незначно зростає і утримується на рівні 66,67 %-71,50 %. Встановлено достовірне зростання пока-зника поширеності зубощелепних аномалій з віком лише серед дітей з аномаліями І класу за Енглем.
СТАН АНТИОКСИДАНТНОЇ СИСТЕМИ ЗАХИСТУ РОТОВОЇ РІДИНИ ДІТЕЙ ЗА УМОВ РОЗВИТКУ ОДОНТОГЕННОГО ЗАПАЛЬНОГО ПРОЦЕСУ
Authors: Годованець О.І. , Кузняк Л.В. , Вітковський О.І. , Муринюк Т.І.
Published: June 2021

Вступ. Сталість природної антиоксидантної сис-теми захисту є одним з ключових показників стану гомеостазу організму людини, а також забезпечує функціювання захисних механізмів за умов розвитку типових патологічних процесів.Мета дослідження. Проаналізувати антиоксидант-ну систему захисту ротової рідини дітей за умов ро-звитку одонтогенного запального процесу в тканинах щелепно-лицевої ділянки.Матеріали та методи дослідження. Проведено об-стеження 98 дітей віком 7-15 років соматично здо-рових та із супутньою патологією щитоподібної за-лози, які мали гострий одонтогенний запальний про-цес. У ротовій рідині дітей визначали рівень дієнових кон’югатів, малонового альдегіду, активність ката-лази, супероксиддисмутази та вміст НS-груп. Ста-тистична обробка отриманих даних проведена стан-дартними методами варіаційної статистики.Результати дослідження. Показники пероксидації у ротовій рідині дітей вказували на інтенсифікацію перекисного окиснення ліпідів, зокрема, рівень мало-нового альдегіду збільшувався на 78 ,57 % (р<0,05), дієнових конюгатів – на 27,27 %. Встановлено зни-ження активності супероксиддисмутази та різка ін-активація каталази, що й призводило до лавиноподіб-ного зростання кількості вільних радикалів у ткани-нах щелепно-лицевої ділянки з посиленням вільноради-кального окиснення.Висновок. Встановлено розвиток складних дезадап-туючих механізмів у середині системи антиоксидан-тного захисту з недостатністю як антипероксидної так і антирадикальної складових.
The religious panorama of the Roman Empire
Authors: Dzielska Maria
Published: June 2021

While traditional Roman religion was more about orthopraxy than orthodoxy, the emergence of Christianity challenged non-Christian intellectuals of the later empire to respond to issues of personal devotion to the gods and the role of theurgy as well as divine unity. This is exemplified in this paper through an examination of Aelius Aristides, Marcus Aurelius, Apollonius of Tyana, Saturninius Secundus Sallustius, Iamblichus, and Proclus. Not only was their thought a reaction to Christianity but also influenced its development.
Vigilancia epidemiológica en tiempos de pandemia del COVID-19
Authors: Merino-Conforme Monserrate Cristina , Espinoza-Lucas Milton René , Acuña-Acebo Mercedes-del-Rosario , Carvajal-Barahona Víctor Fernando
Published: June 2021

Objetivo: caracterización de la vigilancia epidemiológica en tiempos de pandemia del covid-19. Metodología: De tipo documental y bajo un paradigma hermenéutico, el corpus de la investigación lo constituyeron 27 documentos científicos, trabajos e información de revistas nacionales e internacionales de las bases de datos OMS, OPS y del Centro Nacional de Información de Ciencias Médicas y artículos de Pubmed/Medline, SciELO, Scopus. Conclusión: se exigen sistemas de vigilancia epidemiológica en términos de eficacia que incluyan mejoras de las capacidades de detección de casos y de análisis de información relacionados con la pandemia del COVID-19 que apoyen acciones de respuesta a la planificación de la salud pública, que garantice minimizar los  daños para la salud y la economía global.
La autopreparación académica basada en los estilos de aprendizaje de los universitarios
Authors: Espericueta-Medina Marta Nieves , Sánchez-Rivera Lilia , Villarreal-Soto Blanca Margarita , Ortíz-Torres Vivian
Published: June 2021

The present investigation, Learning Styles in different dimensions will be addressed according to The Inventory Learning Processes (ILP), (Schmeck et al., 1977; Schmeck and Ribich, 1978). The objective is to know the factors that make up the axes: academic performance and learning styles of the university students of the Mexican Republic, in addition to the attributes that make them up. We worked with a sample of 253 subjects. The information was processed by means of the descriptive analysis from frequencies and percentages, comparative with Student's t-test for independent groups and with integrative, exploratory factor analysis.It is an exploratory and descriptive quantitative, synchronous and transversal investigation t is indicated that the characteristics that identify young people such as: gender, age, city, state, institution, career, average, among others, influence the academic performance of students. In this way, the factors that affect student learning are presented. A summarized panorama of the research is presented: One of the conclusions is that, in trend, university students have a good academic performance, according to the study method, being the population of women with the most significant opinion.
Likewise, it is observed that the variables that have greater objectivity which will give an educational innovation through factors. Finally, the innovative strategies that have emerged through the study phenomenon will be presented.
Loan Loss Provisions and Earnings Management in Malaysian Banking Industry
Authors: Abdullah Hasni , Bujang Imbarine , Ahmad Ismail
Published: June 2021

Objective The main purpose of the study is to investigate the presence of earnings management incentive in affecting the LLP decision of commercial banks in Malaysia, focusing on the relation between loan loss provisions and earnings before tax and provisions.

Methodology/Technique This study applies the pooled Ordinary Least Square model in assessing the determinants of the LLP.

Findings The empirical findings clearly indicate that the LLP in Malaysian commercial banks is affected by earnings management for that particular period

Type of Paper: Empirical paper

Novelty : The expansion of the existing research in Malaysia in order to examine the extent to which the Malaysian banks engage in earnings and capital management, extends the period of investigation by considering the recent global financial crisis 2007-2009.

Keywords: Loan Loss Provisions; Earnings Management; Capital Management; Macroeconomic Factors; Commercial Banks.
Supply Chain Performance Measurement: The Case Of A State Owned Pharmaceuticals Company (BFM)
Authors: D. Andarini , A. Adhiutama
Published: June 2021

Objective - The Purpose of this study is to identify Supply Chain Management and performance measurement in BFM, benchmarked with other Pharmaceutical companies, and to create solutions in improving and developing Supply Chain Management using the Supply Chain Operations Reference model (SCOR). The Supply Chain Operations Reference Framework for supply chain collaboration (SCOR) model developed a set of performance metrics for collaboration, including reliability, flexibility and responsiveness, expenses, and assets/utilization.

Methodology/Technique - The methodology of supply chain research in BFM was surveyed by field observation, interviews and research. Interviews were conducted to examine the main issues and a hypothesis was tested by applying SCOR model, which also includes green SCOR model as consideration of environmental management.

Findings - This study found that problems arose in the Supply Chain Management of BFM are lead time issues and low performance compared to the score of Pharmaceuticals industry. Environmental management could not be measured using SCOR metrics at Plan Source stage due to limited supplier of BFM.

Novelty : SCOR model was developed performance measurement integrated the supply chain scorecard for process control and result control.

Type of Paper: Empirical Paper

Keywords: Supply Chain Management; Performance Measurement; Indonesia Pharmaceutical Industry; SCOR
The Influence of Individual Internal Factors on Impulse Buying Behaviour through Online Shopping
Authors: Chuah Siew Lin , Gan Chin Chuan
Published: June 2021

Objective The aim of this research is to identify whether personality, emotions, and hedonic motivation influence impulse buying behaviour when shopping online.

Methodology/Technique A total of 270 samples were collected through online. Factor analysis and multiple linear regression were conducted in this research.

Findings The result shows that personality and hedonic motivations are positively related to online impulse buying, whereas emotions are not positively related to online impulse buying.

Type of Paper: Empirical paper

Novelty : Previous research had focused more on the external factors that influence online impulse buying. There is a lack of research focus on internal factors that influence online impulse buying. In this research, the individual internal factors such as personality, emotions, and hedonic motivations are used to clarify the relationships between online impulse buying and the individual internal factors.

Keywords: Emotions, Hedonic Motivation, Impulse Buying Behaviour, Online Shopping, Personality.
Continuance Intention towards e-Government Web-Based Applications Adoption in Southern Malaysia
Authors: Bahruni Siti Mahzurah , Yusof Marlita Mat , Rahim Ramita Abdul
Published: June 2021

Objective To identify the relationship between the e-Government web-based applications adoption and citizens' continuance intention in Southern Malaysia and to determine which element in the predictor variable that has more influence towards the outcome variable based on a theoretical framework.

Methodology/Technique It is a correlational study that uses survey to gather data. This study is conducted in the selected private organizations in the Southern Malaysia; namely the states of Johor, Melaka and Negeri Sembilan. Convenience sampling was chosen to select 216 respondents.

Findings The results found that website design, complexity and perceived usefulness significantly associated with citizens' continuance intention. In addition, perceived usefulness is the main predictor in influencing citizens' continuance intention.

Novelty : This study focuses on the continuance intention to use the intended web-based applications rather than the initial intention to use the applications.

Type of Paper: Review

Keywords: E-Government adoption; continuance intention
The relationships between Human Resource Practices on Employee Retention in Malaysian Industrial Settings
Authors: Lee Kim Lian , Singram Sarvanan , Felix Christopher Luke
Published: June 2021

Objective - The study explores the relationships between human r esource management practices on employee retention in Malaysian industrial setting s . The human resource management practices such as selection, training and development, performance appraisal and reward were considered in this study as the main factors that impact the employee retention in an organization Methodology/Technique - All d ata used in th is study consist s of respondents of executives and managers in manufacturing companies located in Klang Valley, Malaysia. Data processing and statistical analyses were mainly carried out using SPSS. Reliability test was used to check the con sistency and dimensionality of the scale items. P e a rson Intercorrelation was used to measure the associations among the human resource practices and employee retention and Multiple Regression Analysis to check the criterion - related validity of the scale i tems and to complement the correlation results. Findings - Data from 151 respondents from various industries show ed that the reward was most correlated with employee retention. This is followed by performance appraisal, in which fair and inclusive appraisa l leads to better retention. On the contrary, selection was found to have least significance relationship with employee retention. Novelty - The contribution of the study is in asserting some findings for human resource manager to understand the importanc e of an effective HRM practices on employee retention in the manufacturing industry. Apart from that, this research provides an understanding of some important elements in human resource management practices that are more effective in employee retention. Type of Paper - Empirical Type of Paper - HRM Practices; Employee Retention; Relationship; Significance .
The Cognizant of Allergy Diseases and Climate Change
Authors: Din Norrina , Ramli Kamal Izzuwan , Rashid Basri
Published: June 2021

Objective- This paper discover about factors influencing food allergy knowledge and understanding. It also includes experience, training and information of food allergy as well as points out to the inadequate attentions is given to the allergy diseases that focus on food allergy risk outlets such as nurseries, schools and university food service establishments

Methodology/Technique - This paper review of the existing literature about allergy disease and climate change.

Findings - This paper contributes to the understanding about the importance of food allergy awareness among public.
Novelty - This paper discover about allergy disease and climate change to enhance public knowledge and awareness.

Type of Paper- Empirical paper

Keywords: , Allergy diseases; climate change; Allergy sufferer; allergen
Deconstructed CSR and Social Audit Model: Postmodernist Paradigm Observations in Luwu Mining Areas, Indonesia
Authors: Rahmawati Rahmawati , Kumar Dileep
Published: June 2021

Objective - The research aims to decode the model of Social Audit on Corporate Social Responsibility (CSR) and develop a new model for CSR. Methodology/Technique - The study uses qualitative research using Derrida's deconstructive postmodernism paradigm. This study scrutinises all models of CSR, distinguishing between capitalism and socialism in audit practices, and creates a new CSR model that integrates the local wisdom of indigenous peoples. Findings - The study observes several unfair practices without ensuring social and distributive justice to the indigenous community where mining activities are conducted. Several concepts linked to sustainable development were evolved during the data collection phase. By deconstructing the two major concepts of CSR and Social Audit, the research develops a new model of sustainable corporate responsibility which enables stakeholders to empower the Luwu community by ensuring cultural integration and social development. Novelty – By exploring CSR activities in the Luwu area, this study verifies all existing CSR practices and Social Audit models to generate a sustainable corporate social responsibility model for corporations, government and allied stakeholders. This research may be used to support policy agreements between governments, industry players and the corporations, towards effective SCSR implementation. Type of Paper - Empirical. Keywords: Corporate Social Responsibility; Social Audit; Sustainable Development; Capitalism; Local wisdom. JEL Classification: M40, M42, M49
Internet Financial Reporting Of Public Institutions and E-Government as a Medium of Good Governance in Indonesia
Authors: Pontoh Grace T. , Rura Yohanis , Rahman Abdul , Ibrahim Muhammad Achyar
Published: June 2021

Objective - Transparency of financial reporting can be achieved through various media including the internet and is an important factor of good governance. The use of internet in government has been regulated to encourage the government to build and develop websites to present information to the public. This research analyzes the factors that influence the government's internet financial reporting (IFR) through e-government.

Methodology/Technique - The factors tested in this research are: size, leverage, capital expenditure, and audit opinion of the Republic Indonesia Audit Board (BPK). The population of this research is 25 ministries registered on the e-government ranking index (PeGI) between 2013 and 2015. Path analysis using the SPSS 21 application program is used.

Findings - The results show that size, capital expenditure and audit opinion of BPK affected the use of IFR through e-government, whereas leverage did not affect the use of IFR through e-government.

Novelty – These findings indicate that e-government is an important mediating factor in disclosing financial reports on the internet as a medium of good governance for public institutions in Indonesia.

Type of Paper - Empirical

Keywords: Internet Financial Reporting; Size; Leverage; Capital Expenditure; Audit opinion; E-government.

JEL Classification: M40, M41, M49.
Bankruptcy Prediction Model of Banks in Indonesia Based on Capital Adequacy Ratio
Authors: Sintha Lis
Published: June 2021

Objective - The purpose of this study is to examine the influence of capital on bankruptcy banks. The hypothesis of this research is that capital has an effect on the bankruptcy of a bank.

Methodology/Technique - This research examines financial reports between 2005-2014. An econometric model with a logistical regression analysis technique is used. In this study, capital is measured by CAR, taking into account credit risk; CAR by taking into account market risk; Ratio of Obligation to Provide Minimum Capital for Credit Risk and Operational Risk; Ratio of Minimum Capital Adequacy Ratio for Credit Risk, Operational Risk and Market Risk; Capital Adequacy Requirements (CAR).

Findings - The results show that the capital adequacy ratio for market ratio and capital adequacy ratio for credit ratio and operational ratio support the research hypothesis and can form a logit model. The test results of CAR by taking into account credit risk, Minimum Capital Requirement Ratio for Credit Risk, Operational Risk and Market Risk and Minimum Capital Provision Obligations do not support the research hypothesis.

Novelty – This paper contribute to bank bankruptcy prediction models based on time dimension and bank groups using financial ratios which are expected can influence bank in bankrupt condition.

Type of Paper - Empirical.

Keywords: Banking crisis, Cost of bankruptcy, Adequacy Ratio, Financial ratios, Prediction models

JEL Classification: G32, G33, G39.

DOI: https://doi.org/10.35609/jfbr.2019.4.1(2)
Islam as an Ideology of Resistance among the Oromo of Ethiopia
Authors: Hassen Mohammed
Published: June 2021

Before I embark on the main subject, three caveats are in order. First, this article deals with two themes that are indirectly related, but necessary, to understanding why the Oromo, who have had contact with Islam since at least the fourteenth century, embraced it mainly during the nineteenth century. Notwithstanding their recent conversion, today the Oromo are the single largest Muslim community in Ethiopia. The article will explore their rapid conversion during the second half of the nineteenth century in conjunction with Emperor Menilek II’s conquest and occupation of their land and its impact upon every aspect of their existence. Second, in this paper I have heavily drawn on a paper I presented at a conference held at the University of Edinburgh in 1999 and another one published in 1992. Third, the paper is divided into seven unequal parts, preceded by a short introduction.