storage and file structure in rdbms

... chuyển mẩu tin 6 đến không gian chị chiếm bởi mẩu tin 5, rồi di chuyển mẩu tin 7 đến chỗ bị chiếm bởi mẩu tin 6. 2. Di chuyển mẩu tin 7 đến chỗ bị chiếm bởi mẩu tin 5 3. Đánh dấu xoá mẩu tin 5. ... 1. Định vị mẩu tin trong file mà nó đi trước mẩu tin được xen theo thứ tự khoá tìm kiếm. 2. Nếu có mẩu tin tự do (không gian của mẩu tin bị xoá) trong cùng khối, xen mẩu tin vào khối này. ... kế CSDL về tần xuất vấn tin và sửa đổi. FILE CHỈ MỤC B + -CÂY (B + -Tree Index file) Tổ chức file chỉ mục tuần tự có một nhược điếm chính là làm giảm hiệu năng khi file lớn lên. Để khắc phục...

Ngày tải lên: 15/09/2012, 09:38

Ngày tải lên: 05/09/2013, 10:17

Ngày tải lên: 26/12/2013, 15:19

... agent in this setting. An optimal contract involves a credit line, debt and equity. Debt, outside equity, and possibly the credit line provide the funds for start-up capital and the agent’s initial ... optimal capital structure is determined by the specific features of the project. Also, termination is needed, and thus the credit line expands and debt shrinks). Though not visible in the figure, ... capital structure would be unchanged, but the firm would always start with a draw on the credit line. Indeed, the initial leverage of the firm increases with investors’ bargaining power. Comparing...

Ngày tải lên: 12/01/2014, 22:16

... studies conducted in Caucasian populations and speaks to the generalizability of processes involved in age-related decline in cognition and brain volume. Decline in cognition with age and effects of ... Asian individual could benchmark against. Finally, we correlated measures of cognitive performance and brain structure. In view of the increasing automation in brain structure measurement, we made ... obtained a number of measures of brain structure and evaluated the effect of age and health variables of interest on these measures. Mindful that pre-existing chronic illness can in uence imaging...

Ngày tải lên: 14/02/2014, 06:20

... with GST-CD2 (MAP2 v-KIND binding core). Input (cerebellum) GST v-KIND KIND1 v-KIND KIND2 Spir-2 KIND PTPN13 KIND Input (MAP2) GST v-KIND KIND1 v-KIND KIND2 Spir-2 KIND PTPN13 KIND PD from cerebellar ... stain) EGFP EGFP-KIND2-1 EGFP-KIND2-2 EGFP-KIND2-3 EGFP-KIND2-4 EGFP-KIND2-5 EGFP-KIND2 EGFP-KIND1 KIND2-1 487 KIND2-2 521 KIND2-3 555 KIND2-5 589 KIND2-4 488 456 620 KIND2 v-KIND + + + – – Interaction EGFP EGFP- KIND2-1 Input IB: ... tar- geting via KIND2 domain. (A) Structures of the v-KIND. KIND1, KIND2, coiled-coil (CC), RasN and RasGEF domains. Flag-tagged v-KIND derivatives: v-KIND, full-length v-KIND; DKIND1, deletion of KIND1; DKIND2,...

Ngày tải lên: 14/02/2014, 19:20

... labour฀ market฀based฀on฀race฀as฀they฀primarily฀address฀the฀demand-side฀sources฀of฀inequities.฀ The฀continuing฀disparities฀point฀to฀a฀need฀to฀look฀into฀the฀role฀of฀supply฀factors in the฀phenomenon.฀Differences in human฀capital฀acquired฀are฀gaining฀prominence in accounting฀for฀the฀racial฀disparities in the฀labour฀market. Field฀ ... improvement฀ in enrolments฀ in science,฀ engineering฀ and technology-related฀ fields, and in business and commerce.฀These฀figures฀also฀show฀a฀shift฀with฀regard฀to฀ race.฀There฀is฀an฀increase in Africans฀enrolling in the฀fields฀of฀science and business and commerce฀relative฀to฀those฀who฀enrol in the฀humanities and arts.฀However,฀it฀remains฀ to฀be฀seen฀if฀these฀enrolment฀rates฀will฀translate฀into฀similar฀proportions in graduation฀ rates in the฀coming฀years.฀ Table฀2:฀Enrolment฀distribution in three฀Departments฀of฀Education’s฀fields฀of฀study,฀by฀ population฀group,฀2002 Field฀of฀study ... www.hsrcpress.ac.za Employment and Economic฀Policy฀Research฀Programme,฀Occasional฀Paper฀1 Series฀Editor:฀Dr฀Miriam฀Altman,฀Executive฀Director:฀Employment and Economic฀Policy฀Research฀Programme฀ of฀the฀Human฀Sciences฀Research฀Council Published฀by฀HSRC฀Press Private฀Bag฀X9182,฀Cape฀Town,฀8000,฀South฀Africa www.hsrcpress.ac.za ©฀2005฀Human฀Sciences฀Research฀Council฀ First฀published฀2005 All฀rights฀reserved.฀No฀part฀of฀this฀book฀may฀be฀reprinted฀or฀reproduced฀or฀utilised in any฀form฀or฀by฀any฀electronic,฀ mechanical,฀or฀other฀means,฀including฀photocopying and recording,฀or in any฀information storage or฀retrieval฀system,฀without฀ permission in writing฀from฀the฀publishers. ISSN:฀1814-375X฀ ISBN:฀0-7969-2102-4฀ Cover฀by฀Jenny฀Young Typesetting and print฀management฀by฀Compress Distributed in Africa฀by฀Blue฀Weaver฀Marketing and Distribution,฀ PO฀Box฀30370,฀Tokai,฀Cape฀Town,฀7966,฀South฀Africa. Tel:฀+27฀+21-701-4477 Fax:฀+27฀+21-701-7302 Email:฀booksales@hsrc.ac.za Distributed฀worldwide,฀except฀Africa,฀by฀Independent฀Publishers฀Group, 814฀North฀Franklin฀Street,฀Chicago,฀IL฀60610,฀USA. www.ipgbook.com฀ To฀order,฀call฀toll-free:฀1-800-888-4741 All฀other฀inquiries,฀Tel:฀+1฀+312-337-0747฀ Fax:฀+1฀+312-337-5985 Email:฀Frontdesk@ipgbook.com Free...

Ngày tải lên: 15/02/2014, 17:20

... debt b y plotting the increase in consum ption that would be possible b y margin ally increasing short-term debt, relativ e to the in crease in consum ption that i s possible b y issuin g more long-term ... consider the follow ing incom e process. Income in period 0 is equal to 0. Income in period 1 is equal to y. In co m e in period 2 can take 2 values, y H or y L with y H >y L =0, and the proba bility ... defaulting and sta yin g in the contra ct and v d (y) is the value associated with default. Since we assume that default costs are incurred w henever the borro wer fails to repa y its obligation s in...

Ngày tải lên: 16/02/2014, 02:20

... voting power between unifying and non-unifying firms in year -2 4.9% 4.7% Mean difference in the controlling shareholders’ voting power between unifying and non-unifying firms in ... voting power between unifying and non-unifying firms in year -2 5.1% 4.2% Mean difference in the controlling shareholders’ voting power between unifying and non-unifying firms in ... matching between unifying and control (non-unifying) firms is as explained in Table 2. 1.9% Mean difference in the controlling shareholders’ voting power between unifying and non-unifying...

Ngày tải lên: 07/03/2014, 01:20

... provide a rationale for the discriminating behaviour of Mt-GluRS in E. coli. Studies on Tt-GluRS indicated that discriminating and nondiscriminating GluRS can be distinguished on the basis of the ... in the 20 lL aliquot (in nmol). Steady-state kinetic analyses and inhibition studies The apparent k cat and K M values of Mt-GluRS for tRNA Glu , ATP and l-Glu were determined in the tRNA aminoacyla- tion ... analogs tested, to A. Mattevi and M. Nardini for carrying out crystallization trials, to G. Tedeschi and A. Negri for performing MALDI-TOF analyses and N-terminal sequencing, and to G. Deho ` for helpful...

Ngày tải lên: 07/03/2014, 03:20

... reducing internal restraining stress through finite analysis. As a result, a thermal crack index is over 1.0 and a curing time of mass-section foundation decreases within 18 days through minimizing ... minimizing binders in concrete and adjusting hydration heat and delay setting time between the former and the latter placed concrete. Keywords: mass concrete, hydration heat, thermal crack, finite ... is, difference between inside and surface of structure causes a thermal crack from occurring a restraining condition .1) Adding, more high strength concrete with much binder becomes a serious...

Ngày tải lên: 07/03/2014, 03:20

... Ca 2 –CPP aggregates in the cor- rect conformation and concentration, and a suitable ratio between Ca 2+ and CPP, this latter condition being in agreement with data determined in intestinal model studies ... result, obtained in an experimental model consisting of in vitro cells, is in agreement with results obtained using animals or everted intestinal tissue [21–24]. It is 0 246 150 300 Scattered Intensity (relative ... Holt C (1992) Structure and stability of bovine casein micelles. Adv Protein Chem 43, 63–151. 7 Holt C, de Kruiff CG, Tuinier R & Timmins PA (2003) Substructure of bovine casein micelles by...

Ngày tải lên: 16/03/2014, 05:20

... market structure and interest rate spreads and margins (Claessens, Demirguc-Kunt and Huizinga, 2001; Barajas, Steiner and Salazar, 2000; Demirguc-Kunt, Laeven and Levine, 2004) and find a positive ... variables are included into the models. 3 screening and monitoring borrowers and processing savings and payment services drive a wedge between the interest rate paid to depositors and the interest ... 1 1. Introduction Like in many developing countries, interest rate spreads and margins have been high in Uganda over the past ten years. In 2004, net interest margins, banks’ net interest...

Ngày tải lên: 22/03/2014, 23:20

... pattern and degree of extension from each Hep residue varies between and within strains. The presence of nonglycose residues, including phosphate- containing substituents and ester linked acetyl ... again perhaps indicating that steric interference of the two chains precludes coincident expres- sion of both. It is noteworthy that the majority of Sial- lNnT-containing glycoforms contain two ... Sial-lNnT- containing glycoforms were also characterized in LPS from RM118 mutant strains with sequential truncations in the globoside unit (lgtC, lic2A,andlpsA). Sial-lNnT-containing glycoforms...

Ngày tải lên: 23/03/2014, 21:21

... role in protein stability [8], and their involvement in interactions with cations offers new perspective in the analysis of the contribution of ions as cofactors in protein folding [38] and in ... potential binding sites for metals and two pairs of negatively charged amino acid residues have been assumed to be involved in calcium binding: Glu53 and Asp287, and Glu239 and Glu246 [2]. In the ... contamination were followed during the preparation and storage of protein and buffer solutions [32]. Calcium-loaded protein refers to the protein in the presence of 40 mm CaCl 2 . Chemicals and...

Ngày tải lên: 30/03/2014, 04:20

... constructed using standard bond lengths and angles in the Insight II program (MSI, San Diego). Molecular dynamics simulations were per- formed for the fragments containing from eight to ten residues in ... fragment ions corresponding to losses of reducing end or nonre- ducing end Rha in the PSD spectra shown in Fig. 8A and B, probably reflects structural features of the studied ions and not inherent low abundance ... are ori- ginated from the ions at m/z 853.4 (A) and 999.4 (B). The dotted lines are showing the lacking of fragment ions corresponding to the presence of a reducing end Rha or a nonreducing end...

Ngày tải lên: 31/03/2014, 09:20

Ngày tải lên: 11/06/2014, 08:58

Ngày tải lên: 11/06/2014, 13:26