it is added to the frame at the physical layer and is not formally part of the frame sfd is a one byte field that serves as a flag
bài giải bài tập truyền số liệu
... communicating at a same layer Headers and trailers are control data added at the beginning and the end of each data unit at each layer of the sender and removed at the corresponding layers of the ... minimum frame size for a data rate of 10 Mbps is 512 bits We calculate the minimum frame size based on the above proportionality relationship Data rate = Data rate = Data rate = Data rate = 10 ... Questions and Exercises Review Questions The preamble is a 56-bit field that provides an alert and timing pulse It is added to the frame at the physical layer and is not formally part of the frame SFD...
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Báo cáo khoa hoc:" Perfluorodecaline residue in the anterior chamber of a patient with an intact crystalline lens: a case report" ppt
... Perfluorodecaline may also have a role in the etiology of some changes, such as corneal oedema and deep corneal vascularization in the area of perfluorodecaline-endothelial contact It is known that corneal ... is aspirated from the anterior chamber [3] It is assumed that mechanical or the barrier effects of perfluorodecaline may cause the loss of cell density and morphological changes For these reasons, ... operation (a and b) Giant retinal tear with shallow detached retina involving the macula in the right eye (c) Reattachment of retina after vitrectomy sis, but could not obtain these results as the...
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báo cáo hóa học:" Research Article Resource Allocation for the Multiband Relay Channel: A Building Block for Hybrid Wireless Networks" ppt
... i not have a total power constraint between the source and the relay and assume that each has its own battery We assume that the system has total bandwidth W We define the received SNRs at the ... increases, we observe that the achievable rate for k = is larger than that of k = This is because it is optimal resource allocation that we allocate more bandwidth and power to the new link with the ... where Ps and Pr are the total available power at the source and relay node αi and ζi are the nonnegative power allocation parameters for each orthogonal band at the source and relay node, and m...
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Tài liệu Báo cáo Y học: Thermostability of manganese- and iron-superoxide dismutases from Escherichia coli is determined by the characteristic position of a glutamine residue pdf
... were added to sodium azide at the appropriate concentration to yield the required concentration of azide in the complete assay solution, and assayed immediately At least three independent measurements ... inactivates FeSODs via a Fenton reaction with the iron metal at the active site The presence of iron is therefore a prerequisite for its effect and suggests that the absence of reactivity with ... FeSODs and mM for MnSODs) at 22 °C At the indicated times, aliquots were removed for analysis These were calculated to give unit of SOD activity in the standard SOD assay conditions used and all values...
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Báo cáo Y học: Incorporation of 3-nitrotyrosine into the C-terminus of a-tubulin is reversible and not detrimental to dividing cells potx
... in a 1-h period These results indicate that tyrosinated and nitrotyrosinated Table Capability of nitrotyrosinated tubulin to assemble into and disassemble from microtubules Assembly and disassembly ... no radioactivity was incorporated (data not shown) This mutual exclusion indicates that 3-nitrotyrosine and tyrosine are incorporated at the same site of the acceptor protein To determine whether ... that the two compounds are incorporated into tubulin at the same site Another biochemical characteristic of tubulin is its ability to act as substrate of the detyrosinating enzyme, tubulin carboxypeptidase...
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Báo cáo hóa học: " Research Article On the Throughput Capacity of Large Wireless Ad Hoc Networks Confined to a Region of Fixed Area" pptx
... throughput can exhibit an up-anddown behavior reaching a a maximum at a critical spatial node density that is proportional to a power of the ratio of the total noise power to the transmitted power ... in the system, the probability that a cell does not contain that node is the ratio of area outside the cell over the total area For n nodes, this ratio is raised to the n power Since the area of ... uniformly distributed over a square area of area A So the density of the nodes has the value ρ = n /A More precisely, in the following we assume that the node density is fixed, that is, the area A is filled...
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EFFECTIVE THERMAL INSULATION – THE OPERATIVE FACTOR OF A PASSIVE BUILDING MODEL ppt
... adjust a greater and greater area of land and include an equivalent amplify in average temperature Partially as a result of the urban heat island effect, monthly rainfall is about 28% greater between ... Amjad Almusaed Archcrea Institute, Aarhus Denmark Part Passive Building Model and Thermal Insulation Improvement of Thermal Insulation by Environmental Means Amjad Almusaed1 and Asaad Almssad2 ... conflicts of one kind or another, and on the particular subject of trees it is the pressure on land and the rise of consumer power that is placing the professional adviser and his love of green areas...
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Báo cáo toán học: "The Quantum Double of a Dual Andruskiewitsch-Schneider Algebra Is a Tame Algebra" pdf
... [11], we know that the most typical examples of basic Hopf algebras of finite representation type are Taft algebras and the dual of A( n, d, μ, q), which as an associative algebra is generated by two ... relations and AR-quivers of the quantum doubles of the duals of the generalized Taft algebras explicitly and show that these quantum doubles are tame The structures of basic Hopf algebras of finite ... Therefore, it is natural to ask the following question: whether is the quantum double of dual AndruskiewitschSchneider algebra a tame algebra? In this paper, we give an a rmative answer As a consequence,...
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Báo cáo toán học: "The characteristic polynomial of a graph is reconstructible from the characteristic polynomials of its vertex-deleted subgraphs and their complements" doc
... subgraph and its complement This is crucial to the proof of Theorem 3.1 Finally, the referee noted that the result from the title can be reformulated as follows: The eigenvalues and main angles of ... (G)} and since a graph has at least one main eigenvalue, so is aG,0 Discussion The original problem of whether P(G) uniquely determines aG,0 is still open It is part of a general class of reconstruction ... addition to aG,k , k = 1, , n, a single eigenvalue of G is reconstructible [6] An eigenvalue λ of a graph is called main if it has an associated eigenvector x such that et x = Let M(G) denote...
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Báo cáo toán học: "The crossing number of a projective graph is quadratic in the face–width" doc
... basic idea behind our approximation algorithm is that the crossing number of bounded degree projective graphs is bounded by above and by below by quantities that are within a constant factor of ... ∆ and orientable surface Σg , there is a polynomial time approximation algorithm that computes the crossing number crg of a projective graph with maximum degree ∆ within a constant factor This ... + i in the symmetric case), we see that Qj sharing one end with Pi has to pass through Ri−1,i by planarity, and so we are back in (a) with i, j Hence, particularly by (a) ,(b), Pi ∩ Qj is connected...
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Báo cáo toán học: "The maximum size of a partial spread in H(4n + 1, q 2) is q 2n+1 + 1" docx
... purposes these calculations are considerably shorter as the oppositeness relation can be directly associated with the dual polar graph The dual polar graph is distance-regular and hence we readily have ... for the eigenspace Vi , is the matrix of eigenvalues of the association scheme If ∆m is the diagonal matrix with (∆m )ii the dimension of the eigenspace Vi , and if ∆n is the diagonal matrix with ... R A Bailey Association schemes, volume 84 of Cambridge Studies in Advanced Mathematics Cambridge University Press, Cambridge, 2004 [3] R C Bose and T Shimamoto Classification and analysis of partially...
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Báo cáo toán học: "The toric ideal of a matroid of rank 3 is generated by quadrics" pps
... partition of bases, that contains both a blue base and a red base Therefore this partition is adjacent to both the initial blue and red partitions in the 3-base graph Therefore, we know that aef cannot ... red bases (aef and ihg), (efi and afg), or (efh and aig) Because aef is not a base, either (efi and afg) or (efh and aig) are bases Without loss of generality, we may assume that efh and aig are ... to a partition consisting of bases We call one partition of bases the initial blue partition and the other the initial red partition In the figures shown below, a base in the initial blue partition...
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Báo cáo y học: " Induction of the HIV-1 Tat co-factor cyclin T1 during monocyte differentiation is required for the regulated expression of a large portion of cellular mRNAs" pptx
... for the pattern observed in the dendrogram, a two-way ANOVA was fit to each probeset using activation and knockdown state as explanatory variables A linear contrast analysis was then performed to ... Validation of the microarray data Validation of the microarray data Cell cultures were infected with indicated shRNA lentiviral vectors for five days, treated with PMA for 24 hours, and total ... PMA-treated cells was calculated A histogram was generated as described above based on the distribution of the fold-changes of those probe sets (C) Genes that were either upregulated or downregulated...
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KẾT CẤU MỚI THE ENVIRONMENTAL CONSEQUENCES OF A BUILDING WITH A WIDE SPAN
... saturation, the field of view is not being "seen" very well The eye needs to adapt so that the bright part of the field of view just fails to saturate any cells Of course the dimmest part of the ... Formation of a layer of hot gases Fig The thermal equilibrium of any part of the world is affected by ventilation We not particularly think of the hottest parts of the world as being places with inadequate ... 'A' at a certain moisture content and temperature If the air is cooled down until it is saturated - at the limit line - moisture will deposit as condensation or dew The temperature is then a...
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The Marketing Strategy of a multinational join stock company.doc
... product and brand name, packaging, pricing, advertising strategy and execution, promotion, and distribution – may be a candidate for standardization, standardization is just one part of a global marketing ... the contracts Organizing the sales of products is another main task of the department • Financial and Accounting department: this department deals with all financial and accounting matters Another ... Initially, a multinational join stock company only sold famous brands that are Toshiba (Japanese), Mitsubishi (Japanese) Then recently it has expanded and started to sell other brands: Trane (American)...
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Tài liệu Issues Involved When Updating the Primary Key of a Parent Row pptx
... made in the child DataTable This is the default None Indicates that no action takes place SetDefault Indicates that the DataColumn values in the child DataTable are to be set to the value in the ... stored in a DataTable named ordersDT The customersDT and ordersDT DataTable objects are related to each other using the following DataRelation: DataRelation customersOrdersDataRel = new DataRelation( ... push the change to the database, then the change is made successfully in the customersDT and ordersDT DataTable objects and also in the Customers and Orders database tables This works as long as...
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Tài liệu Exporting the Results of a Query to an Array pdf
... from the table dt The DataTable to convert to the array rowCount The number of rows to export to the array startRow The row number of the first row to export fields A string array containing the ... = Math.Min(nRows, rowCount); // Create an object array to hold the data in the table Array a = Array.CreateInstance(typeof(object), nRows, nCols); // Iterate over the collection of rows in the ... Object[][] tableArray = GetRows(DataTable dt, Integer rowCount, Integer startRow, String[] colName); Parameters tableArray Returns an array of field values corresponding to the values in the columns and...
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Tài liệu Báo cáo khoa học: Involvement of two positively charged residues of Chlamydomonas reinhardtii glyceraldehyde-3-phosphate dehydrogenase in the assembly process of a bi-enzyme complex involved in CO2 assimilation doc
... PsativumA SoleraceaA 197 Chlamy 200 Synechocystis 198 Synechococcus 199 R R R R R R R R R R R R R R R R R R R R A A A A A A A A A A R R R R R R R R R R A A A A A A A A A A A A A A A A A A A A A ... resonance with GAPDH as analyte and CP12 as ligand (immobilized protein) The free energies of the association of GAPDH and CP12 were calculated according to equations and in the main text Analyte ... suggesting that the active site and the cofactor-binding site of the mutant R19 7A are not modied by the mutation We thus assume that the conformation of the R19 7A mutant is close to that of the wild-type...
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Tài liệu Báo cáo khoa học: "Learning the Latent Semantics of a Concept from its Definition" pptx
... Proceedings of Fifth Annual Meeting of the North American Chapter of the Association for Computational Linguistics Ravi Sinha and Rada Mihalcea 2007 Unsupervised graph-based word sense disambiguation ... sense pair similarity scores We choose the Indegree algorithm used in (Sinha and Mihalcea, 2007; Guo and Diab, 2010) as our disambiguation algorithm It is a graphbased algorithm, where nodes are ... sj In WMF, the original matrix X is factorized into two matrices such that X ≈ P Q, where P is a 141 K × M matrix, and Q is a K × N matrix In this scenario, the latent semantics of each word wi...
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Báo cáo khóa học: Mutational and computational analysis of the role of conserved residues in the active site of a family 18 chitinase docx
... pKa calculations indicate that Glu144 has a slightly elevated pKa in the free enzyme that, at least in part, results from the vicinity of Asp215 (Table 3, rows and 4) The calculations indicate ... The pKa of Asp140 is much lower than that of Asp142 and Glu144 in all situations where all three residues are present and the one proton shared by Asp140 and Asp142 appears to remain on Asp142 ... the pH-kcat and pHkcat/Km profile as D142N Together, these observations indicate that the functionality of Asp142 during catalysis depends on the presence of Ser93 and Tyr10 Asp140 The D140N and...
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Tìm thêm: xác định các mục tiêu của chương trình xác định các nguyên tắc biên soạn khảo sát chương trình đào tạo gắn với các giáo trình cụ thể xác định thời lượng học về mặt lí thuyết và thực tế điều tra đối với đối tượng giảng viên và đối tượng quản lí điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1 nội dung cụ thể cho từng kĩ năng ở từng cấp độ mở máy động cơ lồng sóc mở máy động cơ rôto dây quấn các đặc tính của động cơ điện không đồng bộ đặc tuyến hiệu suất h fi p2 đặc tuyến mômen quay m fi p2 đặc tuyến dòng điện stato i1 fi p2 động cơ điện không đồng bộ một pha sự cần thiết phải đầu tư xây dựng nhà máy thông tin liên lạc và các dịch vụ phần 3 giới thiệu nguyên liệu từ bảng 3 1 ta thấy ngoài hai thành phần chủ yếu và chiếm tỷ lệ cao nhất là tinh bột và cacbonhydrat trong hạt gạo tẻ còn chứa đường cellulose hemicellulose chỉ tiêu chất lượng theo chất lượng phẩm chất sản phẩm khô từ gạo của bộ y tế năm 2008 chỉ tiêu chất lượng 9 tr 25