logistic model 中文意思是什麼
logistic model
解釋
邏輯斯諦模型-
The growth dynamics of tree basal area of form. taxus chinensis var. mairei population in different altitude were discussed using the liu - logistic model, and the results showed that the altutide of 790 meters is more suitable to the survive of form. toms chinensis var. mairei population than 990 meters. plot sampling was selected and dynamic analysis was used to study the height structure of taxus chinensis var. mairei population, and the quadrate picture of height structure and the curve of survival rate were drew
運用改進模型對南方紅豆杉種群在不同海拔梯度的種群優勢度增長進行了探討，表明海拔790m處的南方紅豆杉具有較大的環境容納量，但增長速度不快，海拔990m處的南方紅豆杉種群環境容納量不高，但具有較大的增長速度，這可能與群落的發育階段不同有關，兩地海拔均為南方紅豆杉適宜的生長海拔高度，相比而言，海拔790m的珍稀瀕危植物南方紅豆杉種群數量特徵的研究高度更宜於南方紅豆杉種群的生長。 -
Taxus chinensis vsr. mairei population is very oblivious from seeding stage to mature tree stage. the patterns were consistant with the ecological and biological characteristics of form. taxus chinensis var. mairei which were valuable and rare and in severe danger. in this paper, logistic model and liu - logistic model were proposed to approach the growth dynamics of tree basal area of form. taxus chinensis var. mairei population
南方紅豆杉幼苗表現為較強的聚集分佈，除與種子的散布有關外，生境條件的差異是重要原因之? ，其它發育階段表現為明顯的隨機分佈，表明它在自然群落中分佈的概率很小，反映了南方紅豆杉珍稀瀕危的生態生物學特性和特徵。 -
The method of modified simplex was applied to optimize the models, and the fitting results show that liu - logistic model was more suitable than logistic model to the actual growth trend of form. taxus chinensis var. mairei population, and the highest growth rate of basal area was the tenth age class, namely the phase when breast diameter was 68 ~ 76 cm
以胸高斷面積代替種群生物量，分別採用logistic常規模型及劉金福提出的logistic改進模型對南方紅豆杉種群的增長動態進行研究，運用改進單純形法對模型進行優化，擬合結果表明改進模型比logistic常規模型更符合南方紅豆杉種群的增長趨勢，南方紅豆杉種群的最大增長速度出現在第10齡級，即胸徑為68 76cm時期。 -
Our results include almost all nonautonomous single - specie harvesting models with periodic coefficients ; for example : logistic model, gompertz model. gilpin model. aynala model
其所得結果包括了許多常見的具周期系數的非自治收獲模型，如： logistic型， gompertz型， gilpin型， aynala型等。 -
Varying - coefficient logistic model estimation and its application
模型估計及其應用 -
Literatures indicate that logit model, logistic model, probit model, mlr, cluster model, option model, proportion risk model, and discriminant analysis are the main effective methods and models when researching the determinants of residential mortgage default risk
通過梳理文獻發現， logit模型、 logistic模型、 probit模型、多元線性回歸、聚類模型、期權模型和比例風險模型、判別分析是研究個人住房抵押貸款違約風險影響因素時採用的主要方法和模型。 -
Application of logistic model in roc curve analysis
分析中的應用 -
Because of these insufficiency, this paper described the mechanism and discipline of technology diffusion and empirical analysis about it based on the study of the basic conception, model and mechanism and three perfect mathematic models such as bass model, logistic model and steffens - murthy model. this paper set up four economic mathematic models as follows
本文在充分分析技術創新擴散的基本概念、基本模式、基本機制以及借鑒技術創新擴散研究中相當成熟的三個模型： bass模型、 logistic模型和steffens - murthy模型的基礎上，進一步從定量分析的角度對技術創新擴散的機理和規律進行了探討，並進行了相關的實證分析。 -
Logistic model is one of core theory in population ecology. it almost the only model to describle population growth for about one hundred
Logistic模型是種群生態學的核心理論之一。 100多年來，它幾乎是描述種群s型增長的唯一數學模型。 -
Then the author choose samples from the listed companies which are customers of banks, and adopted an empirical approach by using the kmv model and logistic model
在銀行與企業的借貸交易中，銀行處于信息劣勢，企業比銀行更了解自身的經營能力、管理水平以及借款項目的風險特徵。 -
Indicators reacting to crisis phenomena are designed with the result of risk classification and reason analysis. with the help of indicators, empiristic analysis establishes the types of risks in government obligation of all counties and constitutes discriminant model and logistic model using six factors, which is derived by cluster analysis and factor analysis
利用警情指標和警兆指標進行實證分析，確定了各區縣政府債務風險類別，通過聚類分析和因子分析得出六個主因子，建立了判別模型和logistic模型，給出警限。 -
In this thesis, based on item response theory, a number of ways to estimate the latent trait and item parameters were introduced and their advantages and disadvantages were analyzed ; what is more, empirical logistic regression and two parameters logistic model ( 2plm ) are combined to set up a linear model by logit - mapping and a new parameter - estimation method is proposed
新方法將經驗logistic回歸用於兩參數logistic模型的參數估計，使用logit變換建立線性模型，利用線性模型的最小二乘估計得到第j個項目的項目參數向量_ j = （ _ j ， _ j ）的兩步估計由於x _ j含有未知的討厭參數，的理論值也和有關，我們結合上式的結果對進行再估計。 -
This article based on the height of strategy, combine the mind of quick logistic and precise logistic, design the logistic model of small and medium - sized enterprise, with the view of system and guided by this model, this article analysis the component of enterprise ’ s logistic system, meanwhile, considered the characters of those component and the realistic of enterprise, reference certain method, optimized the enterprise ’ s logistic system. because there is phenomenon “ benefit is carried inside out ” exist in logistic system, so, when we optimizing the logistic system, we must consider the influence between both sides in benefit is carried inside out. treat wholly improved as standard, among them, the most important relation is stock and transportation
本文從企業的戰略發展的角度，結合敏捷物流和精益物流思想的優點，設計出了中小企業物流模型，並以此為指導，以系統的觀點和整體優化為宗旨，通過規劃中小企業物流系統的組成部分，結合企業自身的實際和各組成部分的特點，對企業物流系統進行了優化設計;由於企業物流系統中存在著效益背反的現象，因此，本文以占企業物流成本比重較大的庫存和運輸兩大重要組成部分為重點，在綜合考慮背反雙方的相互影響下，通過庫存計劃管理的優化，設計出合適庫存水平和運輸量的優化模型，並採用逆向思維綜合設計了運輸方式和運輸路線模型;同時提出了企業要想切實地達到物流系統優化預期目標的三大對策。 -
Utilizing individual data from nation - wide town household survey in 2000 by national bureau of statistics of china ( nbsc ), the researchers adopt correspondence analysis method and construct a logistic model to analyze the effect of familial economical and cultural capital on higher and middle educational attainment in china
摘要根據國家統計局2000年的城鎮住戶調查數據，運用對應分析方法，建立相關計量模型，分析經濟資本和文化資本對子女高等教育和中等教育機會獲得的影響程度；並在此基礎上，比較不同職業階層子女教育機會獲得的差別。 -
We surveyed the object " s parents conditions including their general state, exposed environmental factors, healthy conditions, drugs taking etc. the risk factors were evaluated by uni - and multi - unconditional logistic model used spss10. 0. we collected 66 patients and 55 healthy children in last 3 years
用統一調查表，對每個研究對象的親屬進行面對面詢問，調查內容包括患者一般情況，患者母親一般情況、生育史特別是生育年齡，孕期檢查情況、毒物接觸史、輻射接觸史、患病史、用藥史等；患者父親的一般情況、毒物接觸史、輻射接觸史、患病史、用藥史等。 -
Next we study the logistic model with both state - dependent delays and continuous delays and feedback control. with the help of coincidence degree theory, some new results for the existence of the postive periodic solution of the system are obtained. also, by constructing suitable lyapunov functional, some sufficient criteria for the uniqueness and globally asymptotic stability of positive periodic solution are established
第二部分研究同時具有狀態依賴時滯和連續時滯的反饋控制logistic增長模型，利用重合度理論研究其正周期解的存在性問題，得到了該系統周期正解存在的充分性條件；通過構造適當的lyapunov泛函得到保證該系統存在全局穩定周期解的充分性條件。 -
In this paper, an optimization model for tourism information transfer was described to answer how tourism information can been transferred in a much shorter period of time in a much larger scale of region. logistic model was used to explore the sustainable development of regional tourism
本文通過對旅遊信息系統的研究，運用最優控制方法研究旅遊信息傳遞，研究了旅遊信息傳遞最優化模型，分析了利用此模型為旅遊經銷商以及信息傳遞媒體在有限資金或較短時間傳遞最大信息量的可能性，提供了理論依據。 -
The results of statistics showed that maternal age of ds had a tendency to decrease. the results of maternal exposed factors multi - unconditional logistic model showed that long time and low dose radiation and smoked were significantly related with ds
最後將結果用spss10 . 0進行統計分析，對ds父母親的環境因子暴露情況進行了單因素的基本分析和多因素非條件logistic回歸分析。 -
Intake of msg ( monosodium glutamate ) contraceptive tablet, anti - infection drug leaded to a higher incidence of ds. the results of paternal exposed factors multi - unconditional logistic model showed that smoke, intake of msg and hepatitis were significantly related with ds. other factors, such as drinking leaded to a higher incidence of ds
對父親單因素統計分析結果顯示：在生育ds的父親中，有吸煙史、飲酒史、肝炎患病史、味精用量較多者較對照組顯著增高，具統計意義：多因素logistic回歸分析結果表明吸煙、味精和肝炎與ds發生呈正相關。 -
It was known to all that p. f. verhulst and a. l. j. quetelet who proposed the classical logistic model in 1838, and then t. g. hallam and c. e. clark mended the classical logistic model in 1993
Clark修改了經典的logistic方程近些年來，許多專家和學者對logistic方程中的兩個參數：內稟增長率r和環境的最大容納量k從不同方面進行完善
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