統計缺口 的英文怎麼說

中文拼音 [tǒngquēkǒu]
統計缺口 英文
statistical gaps
  • : Ⅰ名詞1 (事物間連續的關系) interconnected system 2 (衣服等的筒狀部分) any tube shaped part of ...
  • : Ⅰ動詞1 (計算) count; compute; calculate; number 2 (設想; 打算) plan; plot Ⅱ名詞1 (測量或計算...
  • : Ⅰ動詞1 (缺乏; 短少) be short of; lack 2 (殘缺) be missing; be incomplete 3 (該到而未到) be ...
  • : Ⅰ名詞1 (人或動物進飲食的器官; 嘴) mouth 2 (容器通外面的地方) mouth; rim 3 (出入通過的地方) ...
  • 統計 : 1 (對有關數據的搜集、整理、計算和分析) statistics; census; numerical statement; vital statistic...
  • 缺口 : 1. (物體邊緣缺掉一塊) breach; gap; loophole 2. (不足;缺額)insufficiency3. [機械工程]notch
  1. The article points out the importance and necessity of the information - security from its actuality in our country. the resources in the information system, for instance, hardware, software, data, document, operator, meterial and so on, are evaluated and gived safety grade firstly. and then, it analyses the menace including the nonauthorized access, the information leak, the refused sevice, the internal objection which the system will take. the following are the corresponding control police : confirm the users " rights and duties, including the mode of using account, the limit of accessing resource, the application of password, the building of backup ; confirm the administrators " right and duties, including physical safety, system configuration, account configuration and usufruct, password management, audit and control, backup and individual intimity ; run - of - mill measure of security defence, including access control, symbol and identification, integrality control, password technique, firewall system, audit and resumption, safety of operating system, safety of database system, defence of computers " virus and resisting - deny protocol. in the end, the article offers the strategies of disposing the safety - accident and analyse after ithow. to report it, how to solve it in phase, and how to avoid it happening again. in a word, the article presents a holistic resolvent about keeping away the information system ' s security, and supplies a essential frame for its configuration, management and application

    然後,對系可能受到的威脅,包括非授權訪問、信息泄漏、拒絕服務和內部陷等進行分析,並提出了相應的控制策略:確定用戶的權力和責任,包括帳戶使用方式、資源訪問權限、令應用以及建立備份等;確定系管理員的權力和責任,包括物理安全、系配置、帳戶設置及使用權限、令管理、審和監控、備份以及個人隱私等方面;一般性的安全防護措施:存取控制、標識和認證、完整性控制、密碼技術、防火墻系、審和恢復、操作系安全、數據庫系安全、算機病毒防護和抗抵賴協議等。最後,對事故處理和事後分析提供策略,如何報告安全事故,如何協調解決安全事故,如何避免安全事故再次發生。總之,本文對信息系安全防範工作給出一個整體的解決方案,為其在配置、管理和應用方面提供了基本的框架。
  2. Based on consider hereinbefore, this dissertation discusses several aspects on the problem of the sustainable and optimum exploitation of groundwater resources as follows : ( 1 ) reviewed entirely the origin and evolvement of the concept " sustainable development ", stated and commented the study status in queue on " sustainable development " around national and international range, thorough discussed the science connotation about the concept " sustainable development " ; ( 2 ) looked back and commented across - the aboard some furthest basic concept and proposition related to groundwater resources, put forward self opinions on a few existent mistake points of view and chaos understandings ; ( 3 ) expatiated entirely on the content and meaning of the theory of changeable groundwater resources system, contrast with the traditional methods of groundwater resources calculation and evaluation, combined example to show the application of this theory ; ( 4 ) thorough analyzed the difficult and complexity to forecast the groundwater resources, fully stated the traditional methods of groundwater resources forecasting, pointed out the characteristic and applying condition of these forecasting method, introduced the main ideas and methods of wavelet analysis developed recently, and the matlab software be known as the fifths era computer language, and its accessory wavelet analysis toolbox, applied these methods and tools to analyze the groundwater dynamic curve, adopted the b - j method and morte - carlo method, combined with the theory of changeable groundwater resources system, discussed the new view on the forecast of groundwater resources ; ( 5 ) synthetically analyzed the characteristics and limitations of the present all kind of groundwater manage model, combined mathematical programming mathematical statistics random process and the theory of variation system of groundwater resources on the unite optimum attempter of surface water and groundwater, emphasized how to make the model more nicety, more simple, more practicality ; ( 6 ) analyzed the inside condition and outside condition to assure the sustainable and optimum exploi tation of groundwater resources, the inside conditions are the follows : correct resources idea, scientific methods of resources calculation and evaluation, credible forecast methods of resources, exercisable measures of resources management, the outside conditions are the follows : the development idea of high layer, the transform of manage system, the matched policy and rule of law, the adjusted of economy lever, the improve of cultural diathesis, the boosting up of water - saving consciousness and detail measures, the control of population rising, the prevention and cure of water pollute, the renew and rebuild of ecology ; ( 7 ) scan the sustainable and optimum exploitation of groundwater resources from the high level of metagalaxy, earth system science, and philosophy ; lint out the more directions on groundwater resources

    基於以上考慮,論文主要從以下幾方面對地下水資源可持續開發問題進行了比較深入的探討:全面回顧了「可持續發展」概念的由來與演變,對國內外「可持續發展」的研究現狀進行了述評,並對「可持續發展」概念的科學內涵進行了深入探討;對涉及地下水資源的一些最基本的概念和命題進行了全面的回顧和評述,對目前仍然存在的一些錯誤觀點和混亂認識提出了自己的見解;全面闡述了地下水資源變值系理論的內容和意義,並與傳的地下水資源算評價方法進行了對比分析,結合實例具體說明了方法的應用;深入分析了地下水資源預測預報工作的極端重要性和復雜性,對傳的地下水資源動態預測方法進行了全面的評述,指出了各類預測預報方法的特點及適用條件,對最近二十多年剛發展起來的小波分析技術的主要思想和方法及其應用范圍,以及號稱第五代算機語言的matlab軟體和附帶的小波分析工具箱進行了介紹,並應用於地下水動態過程線的分析,採用時間序列中的b ? j法,蒙特卡羅方法,與地下水資源變值系理論相結合,探討了地下水動態資料分析和地下水資源預測預報的新思路;綜合分析了現今各類地下水管理模型的特點及陷,將數學規劃、數理、隨機過程等與地下水變值系理論相結合進行地表水地下水或多水源的聯合優化調度,使模型更準確、更實用;對保證地下水資源可持續開發的內部條件和外部條件進行了分析,內部河海人學博卜學位論文前言、摘要、目錄條件主要是正確的資源觀,科學的資源算與評價方法,可靠的資源預測預報技術,可操作的資源管理措施,外部條件主要是高層發展思路、管理體制的變革、配套的政策法規、經濟杠桿的調節、人文素質的提高、節水意識的增強及具體節水措施、人增長的控制、水體污染的防治、生態的恢復和重建等;從宇宙科學、地球系科學及哲學的高度審視地下水資源的可持續開發;指出了地下水資源可持續開發的進一步研究方向。
  3. 2 ) a new one time password authentication scheme. the original password authentication is vulnerable to guess attack and server personating attack. to overcome the vulnerability of this scheme, this paper designs a simple and efficient password authentication schema. the enhanced schema can improve the system ' s ability to defend all kinds of the attacks without using any cryptosystems

    2 )新的一次性令認證機制。針對postgresql原有認證機制具有易遭受令猜測攻擊和服務器端假冒攻擊的陷,本文設了一種簡單而有效的令認證機制。該認證機制不需要使用任何加密系,就能有效加強對各種攻擊手段的防範能力。
  4. Using the opened thermosiphon of 38x3 as experimental element and water as working fluid, the characteristics of dynamic low load boiling, stable severe boiling heat transfer coefficient and critical heat flux are gotten for the opened thermosiphon at the pressure of 0. 02 - 0. 1mpa and 0. 1 - 0. 8mpa respectively, which makes up the drawback that the opened thermisiphon has not yet accurate boiling heat transfer relationship formulas. by means of experimental results, an opened thermisiphon waste heat recovery boiler is designed for the high temperature gases that the positi e electrode copper refining furnace exhaust, which overcomes effectively the drawback of short life, little capacity and unable to inspect that the closed steel - water thermosion has

    本文以工程上常用的38 3的開封底為實驗元件,以水為工質,對開啟式熱管內的動態低負荷沸騰、穩態旺盛沸騰及臨界沸騰特性進行系的可視化實驗研究,實驗壓力為0 . 02 0 . 8mpa ,實驗得出了38 3的開封底管在工作壓力為0 . 02 0 . 8mpa和0 . 1 0 . 8mpa下的管內沸騰傳熱系數及臨界熱負荷算關聯式,彌補了開封底管? ?這一新型傳熱元件尚無準確的沸騰換熱關聯式的陷。
  5. And ad - link acl - 8112hg data acquisition card is used in gas road exchanging controlling to make this exchange reposefully in the system experiments, tests are given by system control programme

    在預對準實驗方面,編制控製程序,利用光學顯微鏡測量對心和對偏差,算系對準重復精度,結果達到了技術要求。
  6. Based on the experimental data of rotor steel 1crmov in the loading of low - cycle fatigue at high temperature, the strength behavior and the fatigue life curve of this material at 550 have been achieved. meanwhile, with respect to three kinds of notched bar, their material damage assessment method under multiaxial stress condition is discussed

    本文在1crmov材料的高溫低周疲勞實驗數據進行了整理和的基礎上,得到了材料的疲勞強度特性曲線和疲勞壽命曲線,同時對三種不同形式的圓柱形試件進行了多軸應力狀態下的材料損傷的研究,並通過數值算方法進行了疲勞壽命評估。
  7. After researching the part thermal equipments and systems include heaters, steam leakage and receiving systems, low pressure drain system etc, and computing the efficiency of the systems, find out the better choice of the imported assemblies than the domestic assemblies in parameter and the disfigurements in design and making. based on the above, point out the measure to progress them. according to the analysis, we can get some measures to increase the economical level of the systems and save more energy

    對局部熱力設備及熱力系進行分析研究,包括:加熱器設備、漏汽及回收系、低加疏水系、主、再熱蒸汽系以及凝汽器等部位;並算汽輪機本體高、中、低壓缸效率,藉此著重對汽輪機通流部分進行了剖析,找出國外進機組動、靜葉柵、葉型的選擇比國產機組先進性以及國產機組在通流部分設和製造中的諸多陷,並且指出了改進的方向,為機組提高熱經濟性、節能降耗奠定了理論基礎。
  8. On the basis of the study of the theory and appraise method on land use in the small towns from home and abroad, this paper at first conducts a deep study on the development and role of the small towns, indicating that its development has sawn an uneven development phrase and becomes a carrier of the enterprises, a pool of surplus laborers, a hub of material exchanges between the rural and urban areas, a base of spiritual civilization, an important way to achieve urbanization. second, it conducts a study on the situation and features and the problems the land use, indicating that the efficiency of the land use is low, which has a direct influence on the development of agriculture and the role of the small towns. and the study of the demand of the land indicates the shortage of land is serious, and the small town must rationally use the land and increases its intensive role and the economical efficiency to meet the demand

    在分析國內外已有關于小城鎮土地利用的理論與評價方法的基礎上,首先對小城鎮在我國的發展、地位和作用進行了深入的分析,判明我國小城鎮發展經歷了一個曲折向上的發展階段,已成為鄉鎮企業的載體,農村剩餘勞動力的蓄水池,城鄉物資交流的樞紐,農村精神文明的基地,是我國城市化的重要途徑;其次,對小城鎮土地資源利用現狀和特徵進行了探討,並對發展小城鎮建設導致的土地利用問題進行了剖析,表明目前我國大多數小城鎮土地效益和規模效益低下,佔用耕地過多,直接影響農業的發展,影響小城鎮的地位和作用;通過小城鎮土地供需分析研究表明,我國土地短十分嚴峻,小城鎮土地需求較大,小城鎮必須合理利用現有土地,增強集約功能和土地經濟效益,從而緩解需求壓力;最後,論文通過運用特爾菲法,描述分析法、多元分析(主成分分析)法和系分析法中的層次分析法( ahp )等一系列方法,結合定性和定量兩方面,從土地質量、土地資源數量與結構、土地經濟效益、環境效益、社會效益等五個方面進行分析,篩選、建立了土地資源利用評價指標體系,在因子評價的基礎上,建立了土地利用綜合評價模型,並給出了評價過程和方法。
  9. Although economic and population specialists and scholars both in abroad and at home have made extreme progress on research the question of rural labor since they studied it very long ago, as far as china is concerned, based on the following three aspects, firstly, the national condition of our country determined that the foreign theory such as lewis theory might instruct us but we ca n ' t use these theories without rectification ; secondly, in china, our research about this question prefer the qualitative analysis to the quantitative analysis ; thirdly, the research on the labor utilization and shift in this specific area, that is, in the mountainous rural area which covers 69 % of our mainland and occupies 56 % of population is absolutely scarce in present ? to make up for the three deficiencies, this paper selects the econometrics analysis, uses investigation data and by virtue of tsp software, establishes a model where shift labor is the dependent variable and the citilization ratio, industrial structure, the income gap between city and country, the rural infrastructure construction, the labor ' s aptitude and the population ' s natural growth ratio are the variableso through economic, statistical and econometrical test, the conclusion is attained : the income gap between city and country and the citilization ratio are the two most important fectors which affect the labor ' s utilization and shift in mountainous rural area -, the rural infrastructure construction and the labor ' s aptitude are the two relative important factors which affect the labor ' s utilization and shift in mountainous rural area while the rural industrial structure and the population ' s natural growth ratio are the two least important factors according to this, this paper puts forward several suggestions that the income gap between city and country, citilization ratio, rural education, rural industrial structure and agricultural mechanization should be carefully treated with on studying the question of labor utilization and shift in mountainous rural area. finally, this paper points to several suspending problems about this research in order to get the concern of specialist and scholars

    盡管國內外經濟和人學方面的專家與學者很早就開始了對農村勞動力問題的研究並取得了極大的進展,但是,我國在研究農村勞動力問題時,基於三點:其一,我國國情決定了國外的理論例如劉易斯理論,雖然對研究我國的農村勞動力問題具有指導意義,但卻不能照搬這些理論;其二,從國內看,我國對該問題的研究重視定性分析而定量分析明顯不足;其三,乏對我國占國土面積69 、人56的山區農村這一特殊區域內的勞動力開發利用及轉移的專門性研究。為了彌補這三個憾,論文採用經濟量學的數量分析方法,利用實際調查資料,藉助tsp軟體,建立了以外出勞動力數量為被解釋變量,城市化率、農村產業結構、城鄉收入差距、農村社會基礎設施建設、農村勞動力素質以及人自然增長率六個變量為解釋變量的模型,通過對該模型進行經濟學、學、經濟量學三個方面的檢驗,得出如下結果:城鄉收入差距和城市化率是影響山區農村勞動力開發利用及轉移的最重要的兩個因素;農村社會基礎設施建設和農村勞動力素質是較為重要的兩個影響因素;而農村產業結構和人自然增長率相對來說是較不顯著的影響因素。據此,本文提出了在研究山區農村勞動力開發利用及轉移問題時,應慎重對待城鄉收入差距、城市化水平、農村勞動力素質、農村產業結構、農業機械化五個問題。
  10. Analysis results of histogram statistics and section electron microscopic scan technique, are that fracture feature of the cracks of the hbbb is similar and the crack is multi - source strain fatigue one. internal defects of the cast, such as impurities, gas holes, etc, are the main causes for early cracks. the contrast analysis of static strength, model and transient respond on three structures with fem proves that geometrical stress concentration in partial area has influence on early crack, also

    利用直方圖等方法和電鏡掃描技術對該抱軸箱體裂紋分析的結果是:抱軸箱體的裂紋斷特徵相近,裂紋性質屬于多源性低周疲勞裂紋,鑄件中的夾雜、氣孔等內部陷是導致過早裂損的主要原因;利用有限元法對該抱軸箱體三種結構的靜強度、模態和動態響應對比分析,證實了局部幾何性應力集中對過早裂損也有一定影響。
  11. In this thesis, abundant statistical data are contained, two methods are employed to give a positive analysis on the elasticity of demand ( eod ) of i & e in china during the period from 1990 to 2001 from the following three aspects : firstly, regression analysis is applied to calculate the average eod of the general i & e. generally speaking, the export is rich in price eod while the import has a poor one. in addition, the absolute value of the sum of these two kinds of elasticity is higher than 1, which accords with marshall - lener condition and proves that devaluation of rmb should be helpful to improve the trade balance. suggestion is further provided such as cutting off producing cost of export, improving technology and implementing strategy of import substitution to improve trade balance

    本文運用豐富的數據資料、兩種方法、從三個層次實證分析了1990 - 2001年我國進出商品的需求彈性:首先,運用回歸分析法算總體進出商品的平均彈性,得出我國出商品總體富有價格彈性,而進商品總體乏價格彈性,進出需求價格彈性之和的絕對值大於1 ,符合馬歇爾?勒納條件,人民幣貶值有助於改善貿易收支的結論,並提出降低出商品生產成本、提高生產技術水平、實施進替代戰略來改善貿易收支;其次,運用彈性定義法逐年算約100種主要出商品和約50種主要進商品的總體需求價格彈性,對其結果進行分析,進一步驗證了前述結論;再次,運用彈性定義法逐年算農產品、鋼鐵、汽車、醫藥等五大類八種商品的進出需求價格彈性,根據其不同的分佈狀況,聯系實際經濟情況,提出相應的匯率、價格及產業政策以改善貿易收支。
  12. In the paper, the following main factors are studied, such as developing the expert knowledge - base based on the special knowledge of the explosive demolition of frame building, designing the object - oriented expert system of the explosive demolition of frame building, developing the neural network training example base based on projects, developing the forecasting mode of blast effects with matlab 6. 1, developing the expert system of explosive demolition of frame building with visual b 6. 0, carrying out the connection of the expert system and forecast mode. the system consisted of eleven functional modules, such as the input of initial parameters module, the choice of the blasting method module, the choice of blast mode module, the design of blasting parameters module, the design of charge module, the verifying blasting safety module, the calculating safety of tumble module, the design of detonating net module, the blast effects forecasting module and the calculating volume module

    本文的研究內容有:以框架結構樓房拆除爆破領域的專業知識為基礎製作專家系知識庫;設一般面向對象的框架結構樓房爆破拆除設的專家系;搜集相關爆破工程實例製作用於爆堆效果預測神經網路訓練的樣本數據庫;選取適當的輸入輸出因素,用matlav6 . 1構建爆破效果預測神經網路模型;用vb6 . 0編程開發出框架結構樓房拆除爆破專家系,並實現爆破效果預測神經網路模型和專家系的鏈接。該系由初始參數輸入、倒塌方法選取、倒塌方案確定、孔網參數設形狀及參數、爆破安全校核、傾倒安全校核、爆破網路、爆破效果預測、工程量算、算設說明書等十一大功能模塊組成。
  13. Issuing to village the policy subsidying the small sum in interest an agricultural loan a valid path for always is academic circles with poor population in generally accepted the village of solution in government in all levels, promoting village developping, from current see theoretically, the small sum of the certain scope inside subsidying the interest lends money of issue, will promote the agriculture and the development of the village, increase poor and homely income in village level, but the small sum subsidying the loan of interest is can increase the income level of the peasant household, lend money a problem for increasing accepting together native average in circumstance increasing accepting sum comparing, result how, this is this text wanting resolving, this text pass to the inquisition of the loan peasant household, in collecting large quantity one hand material of foundation, is all each county downtown to is investigated the data proceeded to gather, statisticsing the contrast circumstance that loan an income change the circumstance and increase with native average the sum, the loan sum that will be investigated the peasant household, invest the realm proceeded the contrast, and borrow funds with the region not door of that year income increment the sum proceeded the comparison. use the different from lengthways the method research that compare investment in fixed amount realm, different loan sum, not the environmental loan in area in county door increases to accept sum and its correlations. come to explain the public finance subsidy the small sum in interest an agricultural loan an influence for to peasant household income, analyzing the small sum in policy an agricultural loan an influence for to increasing accepting the factor, discussing the policy stick the small sum in interest an agricultural loan a shortage for of policy blemish and managing top, combining domestic and international policy of now of combination an agricultural loan a policy for of policy with managing way, to small sum in policy in our country an agricultural loan style establishment and manage the mode put forward a little bit personal views, the writer thinks that develop the policy an agricultural loan a root for of a farming using is a financial environment of village to push forward financial system in village reform to reform with political setup, improve village finance serve, create a competition, norm, subsidying the interest the loan the solution limitedly not farmer of letter funds need problem

    向農村發放政策性貼息小額支農貸款一直是學術界和各級政府比較公認的解決農村貧困人,促進農村發展的有效途徑,從現有的理論上看,一定范圍內的小額貼息貸款的發放,會促進農業和農村的發展,提高農村貧困家庭的收入水平,而小額貼息貸款是不是能夠提高農戶的收入水平,貸款戶的增收情況同當地的平均增收額比較,效果怎樣,這是本文所要解決的問題,本文通過對貸款農戶的調查,在收集大量第一手材料的基礎上,將各縣市區所有被調查數據進行了匯總,出貸款戶收入變化情況以及與當地的平均增長額的對比情況,將被調查農戶的貸款額,投資領域進行了對比,並與當地非借款戶的當年收入增加額進行了比較。用定量比較和縱向比較的方法研究不同投資領域、不同貸款額、不縣域環境的貸款戶增收額及其相互關系。來說明財政貼息小額支農貸款對農戶收入的影響,分析政策性小額支農貸款對增收的影響因素,論述政策性貼息小額支農貸款的政策性陷及管理上的不足,並結合當今國內外政策性支農貸款的政策和管理方式,對我國政策性小額支農貸款的政策制定及管理模式提出了個人的一些見解,筆者認為發揮政策支農貸款的支農作用的根本是推進農村金融體制改革和政治體制改革,改善農村金融服務,創造一個競爭、規范的農村金融環境,有限的貼息貸款解決不了農民的信貸資金需求問題。
  14. But while such measures may have helped to ease pressure on scarce resources and reduce once widespread poverty, they are also aggravating demographic imbalances that could undermine these gains

    然而就在這些措施可能協助減輕了稀資源帶來的壓力並減輕了一度蔓延的貧困問題的同時,也同樣加重了人學上的不平衡,這有可能破壞已有的成就。
  15. And, withal, brew can make manufacturer provide their products to the market more quickly, they can self - defining his equipment conveniently and flexibly. the operator can write user interface in brew upper layer, thus upgrade its interface by wireless. in allusion to the fault of complex code construction, bad transplantable capability, bad extendable capability in traditional software of cmda handset module, this paper give the software design scheme by using brew platform. because of bad reusable capability, maintenance difficultly by using traditional dialog control in brew platform, this paper propose the design idea of windows control, solve upwards problem efficiently, reduce the cost of development greatly, enhance technology

    本文針對傳cdma手機模塊的上層應用軟體設中存在的代碼結構復雜,可移植性差,可擴展性差等點,給出了以brew平臺為上層應用設平臺的軟體設方案,由於在brew平臺上使用對話框控制項設軟體存在代碼復用性低,維護不易等困難,本文在此基礎上又提出了使用窗機制的設方法,有效的解決了上述問題,降低了研發成本,提高了終端設備製造的技術水平,使得採用該方案設的產品與國內外同類產品相比更具有競爭力。
  16. At present, several kinds of stomatological his have been developed, but most of them are facing community clinics, with the thought of design goes after small - sized and overall state. they are lacking in expert features, and different functional modules are not in common use ; furthermore, modules specialized in prosthodontical work cannot be found

    目前,國內已經研製了幾種腔his系,但這些系多是面向社區診所開發的,設思路上追求小而全,乏專科專病的特色,各功能模塊無法做到一通用,更無專門適用於腔修復科第四軍醫大學碩士學位論文一醫療工作需要的模塊。
  17. In this paper, aimed at the problems existed in theoretical analysis and application of ftm, the discrete fourier transform method is applied to analyze the traditional ftm ( tftm ). and computer simulation is applied. the main propose is to solve the problem, such as frequency shifting, selection of carrier frequency big or small and selection of filter window size. considering the feature of double - exposure holographic interferometry, we propose a modified ftm ( mftm )

    針對二次曝光數字全息干涉術中ftm存在的理論陷和具體應用到二次曝光全息干涉量中存在的問題,本文從離散傅立葉變換的角度對傳的傅立葉變換法( tftm )進行了理論分析和算機模擬算,並重點致力於解決ftm中的移頻問題、載頻大小的選擇以及濾波窗大小的選擇等關鍵問題,結合二次曝光全息干涉的特點提出了改進的傅立葉變換法( mftm ) 。
  18. The research contents of this paper includes as follows : firstly, design a new type reader based on ti s6700 reader ic and try to enhance the reading distance through adding power amplifier ; secondly, adopt the idea of gpio simulation to produce spi timings to drive s6700. secondly, overcome the shortcoming of general mcu spi port ; thirdly, design the rs232 / rs485 full duplex conversion module, mmi interface in the system ; fourthly, analyze the rfid system communication protocol iso15693 and find out the working processes and realization of the instruction ; lastly, discuss the communication safety and accidental factors including the checkout and collision design, illustrate the realization of crc and anti - collision arithmetic theory

    本論文的主要研究內容包括: (一)設基於s6700閱讀器晶元的新型閱讀器,通過使用對中高頻閱讀器外加功率放大模塊的方法,實現較遠距離通信。 (二)採用單片機通用三線模擬的方法模擬通用spi時序,克服其不可位操作的點,實現對s6700的驅動。 (三)在rfid系中集成設了rs232 / rs485通訊模塊、液晶顯示模塊等,著重說明了其軟硬體實現方法。
  19. Method national system sampling survey of kinds and number of the equipment in institution of disease prevention and controlment, compute equipment assets, and gaps compare with standard

    方法全國系抽樣調查省市縣各級疾病預防控制機構的各類設備配置種類和數量,算設備資產,和標準比較得到
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