population-based studies 中文意思是什麼

population-based studies 解釋
基於人群的研究
  • population : n. 1. 人口；人口總數；全體居民；人口的聚居。2. 物的全體[總數]；【生物學】蟲口；種群（量）；群體；族，組，個數；【統計學】對象總體，全域。3. 【物理學】布居；密度。4. 〈罕用語〉殖民。
  • based : 基準
  • studies : 哥倫比亞大學
  1. Cancer registries are a primary source for unbiased population - based case control studies, the end points for cohort studies and clinical trials - - and perhaps most importantly, the beginning point for survival analysis

    癌癥登記處是一個無偏倚基於人群病例對照研究的原點，群組研究和臨床試驗的終點也可能是最重要的生存分析的起點。
  2. Recent studies have indicated that psa - based screening of older population for organ - confined early stage prostate cancer is an acceptable, practical and reliable modality

    近期研究顯示以前列腺特定抗原為基礎作為老人早期局限性前列腺癌篩選是一可被接受、可行且可靠之方法。
  3. Most of the studies are either population - based ? for example, research shows that prostate cancer is less common in countries where people drink a lot of green tea ? or in lab dishes or animals, none of which provide conclusive evidence for humans

    大多數研究是以人數的多少為判斷依據的-例如，研究表明前列腺癌在一些好飲茶國家裡是不常見的?或在實驗室載片上或動物中，所有這些都未能為人類提供結論性的證據。
  4. Based on the analysis of the influence of ga operators on population diversity, this paper studies parameter control of ga and proposes a self - adaptive mutation probability. it can automatically regulate the mutation probabilities according to the population diversity at primitive stage and adopt different mutation probabilities at different stages. the results show that it is better than the fix and adaptive mutation probabilities

    在分析遺傳運算元對種群多樣性影響的基礎上，研究了ga的參數控制問題，提出了一種自適應性變異概率，它可在ga進化初期隨著種群多樣性的變化而自適應調整變異概率，並在ga進化的不同階段採用不同的變異概率。
  5. It studies the determination of population distribution, information fusion of multiple sources based on evidence theory, the consistency of prior information relative to field test information and the robustness of prior distribution

    就其中的總體分佈的確定、多源驗前信息融合問題、驗前信息與現場信息的一致性問題以及驗前分佈的穩健性進行了研究。
  6. In the second charper, two reformed metheds has presented, which are competition adaptation - ga based on elitist and dual mutation adaptive - ga which can increase the population diversity and can decrease the dependence of genetic algorithms " result to the control parameter of operators and the status of initial population. to testify their abilities of algorithms, some studies have excuted which included the study to optimize parameter for pid and the study to multivariable intelligent decoupling control for mimo system. the outcomes have showed us that this amendment has a better effective than conventional means and the genetic algorithms which have no change

    第二章中，在已有文獻的基礎上，創新性的提出兩種改進演算法：基於最優保留的聯賽競爭機制遺傳演算法（ competitionadaptation - gabasedonelitist ）和雙變異自適應遺傳演算法（ dualmutationadaptive - ga ） ；通過對演算法中選擇運算元和變異運算元的有效改進，提高了演算法的尋優能力和尋優效率，增加了群體中個體模式的多樣性，對于演算法中存在的欺騙問題、早熟問題以及成熟前收斂問題有明顯的改進作用。
  7. Comment : the results of this population - based study confirm those of previous studies that found an association between multiple doses of antibiotics and development of childhood asthma and provide yet another reason to avoid unnecessary use of antibiotics, particularly broad - spectrum agents

    評論：這個人群研究的結果證實了之前研究的結果：發現了多倍劑量的抗生素治療和哮喘發病之間的關系，為避免使用不需要用的抗生素提供了又一個理由，特別是廣譜抗生素。
  8. Finally, large population - based studies suggest that obesity is a risk factor for chronic migraine after adjusting for comorbidities

    最後，大樣本人群調查顯示，經校正後共病者，肥胖是慢性偏頭痛的危險因素。
  9. To monitor the trend of the exposure and produce more accurate estimates, we will explore the possibility of conducing a population - based food consumption survey so that population - wide dietary exposure studies can be conducted in the future

    為監察及更準確評估市民從食物攝取到這些物質的趨勢，我們會考慮進行全港食物消費量調查的可行性，以便日後研究全港市民從食物攝取到上述物質的情況。
  10. Confirmation and estimation of risk in population - based studies has been inconsistent and more problematic

    基於人群的研究，對于風險的認證和預測還存在矛盾和很多的疑問。
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