Showing posts with label quantitative research. Show all posts
Showing posts with label quantitative research. Show all posts

3/14/2009

瑋佳-Alberti等人(2007)*的研究

拜讀了Alberti等人(2007)*的研究後, 覺得可以把它視為一個用了量化方法的case study, 包括從質性資料中萃取出量化數據(例如常用的空間資料量化, 以及選定都市化程度指標),和一般量化研究有個小小的不同, 就是文獻回顧的部分不多, 並非作為各個變項的"依據", 而是分析架構的建立, 所用的資料分析方法為pattern matching.

1.研究問題
景觀型態(landscape patterns)由都市到鄉村的漸變如何影響生態性(ecological condition)? 由此衍生出3個子題: 用以描述景觀型態的變項如何依發展強度而漸變? 景觀結構指數對生態性變化的預測力有多重要? 都市型態與生態性的關係如何隨空間尺度改變?
2.pattern建立
研究中回顧了相關文獻, 連結出都市型態與溪流生態的關係, 並據以提出假設
3.研究基地
選定美國西北岸的普吉特灣區(Puget Sound)內42條支流流域為研究基地.
4.資料收集與呈現
研究中調查了4種變項, 用以描述都市型態及其由都市到鄉村的漸變: 土地使用強度(land use intensity), 土地使用型態(landcover composition), 景觀結構(landscape configuration), 以及不透水面積連結性(connectivity of the impervious area), 分別有若干個測量項目, 例如土地使用強度包含道路密度, 人口密度, 商業區面積比等.
5.研究結果
結果當然是很多也很好, 不過在此我只想摘錄最值得我專討時效法的1張圖. 橫軸部分是都市到鄉村漸變的梯度(grandient), 在此以不透水面積的比例代表, 縱軸則是各LCTs所佔的比例. 其他結果恕刪, haha~

*Alberti, M. et al. (2007). The impact of urban patterns on aquatic ecosystems: An empirical analysisin Puget lowland sub-basins. Landscape and Urban Planning, 80(4), 345–361.

3/07/2009

瑋佳-有關時間與物種

因為前一篇po文, 想到毛毛的研究, 如果照這個大綱來看, 可能如下述:
  1. 提出研究問題(例如在配置方式受限的情況下, 都市中的植栽應如何選種、管理, 以提升鳥類多樣性? 常用的誘鳥樹種是否有用? 如何提升其成效?)並訂定研究目標(例如本研究將探討常見誘鳥樹種生理週期與鳥類多樣性的相關性barabara)
  2. 選定某個地區的指標物種, 例如台北市的綠繡眼(為常見都市鳥種, 具觀賞價值及環境教育意義, 其存在代表此一環境條件下的生態性達可接受程度)
  3. 依據其習性訂定研究的時間尺度, 例如成鳥愛吃構樹的果實, 而幼鳥係以紋白蝶的幼蟲為食, 所以本研究的時間尺度有二: (1)構樹的結果期和非結果期及(2)繁殖期與非繁殖期; 此時可以畫出研究架構, 並標示出變項的測量指標
  4. 劃定有構樹或有菜園的樣區後, 進行以下調查: (1)構樹結果期6-7月及非結果期8-9月分別做鳥調; (2)繁殖期2-3月和非繁殖期4-5月分別做鳥調或數鳥巢
  5. 分別做(1)和(2)兩個差異性分析
  6. 然後就知道構樹和菜園是否真的能夠達到提供綠繡眼食物來源的功能
因為是一氣呵成寫下來的, 很多重點沒有顧到(比如研究結果跟研究目的不太呼應, 分析方法也不能隨便喊喊^^"), 先不管(把brainnote當作論文筆記本在用:p), 這只是我對時間尺度研究的一種想像, 也是我一開始聽到以季節和植物生理週期和生物多樣性為題時, 第一個想到的方向, 在此稍微整理一下.
不過這個綠繡眼虛擬研究不能做, 原因有二:
  1. 不適合當作研究對象: 綠繡眼的食性太複雜, 包括構樹, 七里香, 龍葵等多種植栽的果實牠都吃, 也會吃木棉, 山櫻花等樹的花蜜, 所以很可能一年到頭牠們都在台北市亂飛一通, 根本不是受樣區裡那幾棵構樹的影響
  2. 不適合這個時候做: 綠繡眼的繁殖期是每年2月左右, 親鳥餵食期約2-3週, 已經過了!
   

2/01/2009

Purpose of the Study 2/12

Overall Principles:
Describe in brief sentances, connecting your research problem, based on your literature review, following with research methods.

Purpose of the Study
1. Use a word such as purpose, intent, or objective to begin the passage
2. identify the theory, model, or conceptual framework to be tested in the study (do not need to describe it in detail)
3. mention the specific type of method of inquiry being used in the study (survey, experiment)
4. state whether the independent and dependent variables will be related or whether two or more groups(as an independent variable) will be compared in terms of the dependent variable(s)
5. as a general principle, order the variables in the relationship or comparison sentence from independent to dependent
6. refer to the unit of analysis in the study (mention the subjects, population, or sample being studied, as well as the number of the individuals studied
7. provide a general definition for each key variable in the study and use established definition

Examples:

The purpose of this____(experimental? Survey?) study is (was? Will be?) to test the theory of ____that____(compares? Relates?) the____(independent variable) to____(dependent variable) for____(subjects? Sample?) at____(the research site). The independent variable(s) ____will be defined generally as____(provide a general definition). The dependent variable(s) will be defined generally as____(provide a general definition), and the intervening variable(s), ____(identify the intervening variables) will be statistically controlled in the study.
(Research Design, Creswell, 2006?)

The purpose of the present research was to develop rating scale measures of the four components postulated by Kaplan and Kaplan (1989). To develop such measures has at least two important motivations. First, by empirically showing that the hypothesized restorative components are separate constructs, an evaluation of Kaplan and Kaplan's (1989) theory is achieved. Second, it is necessary to be able to measure the restorative components to find out how they are related to different outcome measures. There is hardly any other way of doing this than requesting human observers to report how they experience different environments in these respects (Craik & Feimer, 1987).
......
The objective of the present research is to develop another set of rating scale measures of the four components of restorative environments, being away, extent, fascination, and compatibility. In doing this, an attempt is made to remedy some of the noted shortcomings of the PRS.
(Journal of Environmental Pshcyology (2001) 21, 31-44)

This article focuses on exploring the affective components of the wilderness place setting as they relate to spiritually beneficial outdoor recreation experiences; more specifically, what types of setting characteristics or attributes (i.e. biophysical and social) give rise to outdoor experiences that are considered spiritually inspirational. Historically, most research on recreation has focused primarily on specific activities rather than the recreational setting in and of itself. However, over the past two decades researchers have begun to recognize that the setting itself is largely influential in determining how satisfied the recreationist is with the activity. In effect, the parameters of recreation research have now broadened to include the environment as a primary point of inquiry. The thrust of this article is to more fully investigate a number of setting attributes that were ‘key’ in determining the spiritually inspirational qualities of two different outdoor recreation experiences for two separate groups of women.
(Journal of Environmental Psychology(1999)19, 21-39 )

The purpose of this study was to determine whether there was a relationship between the degree of naturalness in the view from university dormitory residents’ windows and their capacity to direct attention.
......
The specific objective of this study was to determine whether the degree of naturalness in the view from college dormitory windows was associated with residents’ levels of capacity to direct attention. It was hypothesized that students who had more natural views from their dormitory windows would show higher levels of performance on measures of directed attention than those who had less natural window views.
(Journal ofEnvimnmento1 Psychology (1995) 15,77-85 )

The aim of this study was to search for a link between the map-based land cover data typical for monitoring programs, and perceived aesthetic quality as quantified through a photography-based preference study. To achieve this we used the results from a landscape preference study for Norwegian agricultural landscapes (Tveit, 2000), linked to a number of 1 km2 squares included in the 3Q-monitoring programme. Based on the land­scape represented in the images, we calculated a number of map-based landscape indicators, aiming to see whether any of these indicators were correlated to preference rankings.
(Landscape and Urban Planning 78 (2006) 465-474 )

The central aim of the present research was to gain more insight into people’s visual preferences for nature development landscapes. In the following paragraphs, we first discuss differ­ent strategies for nature development and their relation to the concept of wilderness. We then review prior research on indi­vidual differences in visual preferences for wild versus managed natural landscapes along with the potential relevance of place of residence, socio-economic variables, and recreational motives to explain these differences. Finally, we present the results of a survey among 500 residents from six nature development areas in The Netherlands.
(Landscape and Urban Planning 78 (2006) 362-372)

The emphasis of prior research on restoration has been on experiences in outdoor natural settings that range considerably in duration but are distinctly longer than the very brief interludes that characterize looking out the window (e.g., Hartig, Böök, Garvill, Olsson, & Gärling, 1996; Hartig, Mang, & Evans, 1991). The emphasis of the present article, by contrast, is on people’s window views from home. More specifically, the focus is on the content of these views, the degree to which residents’ views are of preferred settings, and the association of view contents with well-being and residential satisfaction. Examination of the role of the view from home is hardly a trivial issue. For many individuals, extended restorative experiences may be few and far between. Micro-restorative experiences afforded by the view from home, however, may be far more attainable.
(Environmant and behavior, Vol. 33 No.4, July 2001 507-542)

Research Problem 1/12

Overall Principle:
0-1. Provide a narrative hook
0-2. lower the barrel

1. Describe a problem
1-1. write an opening sentence that stimulates interests as well as conveys an issue to which a broad readership can relate
1-2 specify the problem (dilemma, issue) leading to the study
1-3 indicate why the problem is important
1-4 focus the problem statement on the key concept being tested (the dependent variable)
1-5 as a general rule, refrain from using quotes in the leading sentence
1-6 stay away from idiomatic expressions or trite phrase
1-7 consider numeric information for impact
1-8 consider short sentence for impact

2. Describe the literature about the problem
2-1 discuss the literature that addresses the problem and set the problem within the ongoing dialogue in the literature
2-2 refer to the literature by summarizing groups of studies, not individual studies
Mention deficiencies in the literature
2-3 write about areas overlooked by past studies, including topics, special statistical treatments, and significant implications
2-4 discuss how the present study addresses these deficiencies and provides a unique contribution to the literature (what remains to be explored) (little empirical research) (very few studies)

3. Target an audience
3-1end the introduction by discussing the significance of the problem for a specific audience
3-2 to phrase a question that the audience likely would want to answer

Examples:

Will people drive less or recycle more only when they feel that they must do so to ward off the threat of ecological collapse? We see in environment-behavior research an emphasis on risks, damages, and moral obligations as the driving forces of ecological behavior (i.e., behaviors that contribute to environmental preservation and conservation) (Axelrod & Lehman, 1993). Although research on negative determinants such as personal threat (e.g., Baldassare & Katz, 1992), harm (e.g., Manzo &Weinstein, 1987), and guilt feelings (e.g., Kaiser & Shimoda, 1999) may help to ameliorate environmental problems, it represents a limited perspective on the motivational basis of ecological behavior. In this article, we apply a complementary perspective that encompasses positive motivations for ecological behavior.
(ENVIRONMENT AND BEHAVIOR, Vol. 33 No. 4, July 2001 590-607)

In 1996, more than 13 million children in the United States were living below the poverty line. Among White children, 16% live in poverty, where­as nearly 40% of African American children live in poverty (U.S. Bureau of the Census, 1998). Along with poverty often come substandard housing conditions-commonly characterized by overcrowding, infestation by rodents or insects, and lack of adequate heat or plumbing. According to a recent study by the U.S. Department of Housing and Urban Development, a record 5.3 million low-income households are paying more than 50% of their income for rent or are living in severely substandard housing (“In Our Opin­ion,” 1998). Children living in poverty commonly face a host of environmental chal­lenges such as poor housing, deteriorated neighborhoods, and overcrowded schools, not to mention the prevalence of social ills such as crime, violence, and racism. Within this context, it is likely that housing conditions can have a strong effect on young occupants. Yet the nature of this effect is unclear. The extant empirical literature provides little evidence regarding the housing characteristics that matter. Of particular interest in this article, the extent of the naturalness of children’s home environment has received virtually no research attention. Does the view from a child’s home affect his or her well-being? Do nearby trees make a difference in cognitive functioning? There is a growing body of evidence suggesting that these factors are gener­ally important to human well-being, but there is little clarity regarding their significance to children within the home environment. Before considering the question of nature in the home, I will first review the literature regarding the effects of housing on children.
(ENVIRONMENT AND BEHAVIOR, Vol. 32 No. 6, November 2000 775-795)

People tend to prefer natural over built environments ability to provide restoration from stress or attentional (see reviews by Ulrich, 1983; Knopf, 1987; Kaplan & fatigue (Kaplan & Kaplan, 1989; Hartig & Evans, 1993; Kaplan, 1989; Hartig, 1993). For example, in samples of Staats, Kieviet, & Hartig, 2003). In particular, pre-European and North American adults, photographs of natural scenes consistently receive higher ratings of liking, scenic beauty, or pleasantness than photographs of urban scenes (e.g. Purcell, Lamb, Mainardi Peron, & Falchero, 1994; Stamps, 1996). Typically, levels of self-reported preference for natural scenes are so much higher than preference levels for urban scenes that the distributions of ratings for the two domains hardly overlap (e.g. Kaplan, Kaplan, & Wendt, 1972; see also Ulrich, 1983). People’s preference for natural over built environments can also be inferred from behavioral indicators, such as the higher prices paid for real estate in natural surroundings (e.g. Anderson & Cordell, 1988; Luttik, 2000).
Given that the empirical evidence for the preference for natural over built environments is strong and robust, it becomes important to ask why people have such a ubiquitous fondness for nature. According to several authors, at least part of the answer relates to nature’s ability to provide restoration from stress or attentional fatique (Kaplan & Kaplan, 1989; Hartig & Evans, 1993; Staats, Kieviet, & Hartig, 2003). In particular, preference for natural over built environments may be mediated by an implicit assessment of these environments’ potential for restoring or improving wellbeing (Appleton, 1975; Ulrich, 1983; Kaplan, 1987). Although this explanation is theoretically plausible, relatively little evidence has directly supported the mediating role of restoration in environmental preferences. The present research was designed to fill this void.
(Journal of Environmental Psychology 23 (2003) 135-146)

Where rural arterial roads approach cities, they become magnets for urban commercial expansion. When approaching a city from the countryside, these roads too often present visually chaotic settings consisting of commercial development that represents the worst of urban sprawl-settings that are open, barren, monotonous, and overwhelmingly ugly. Designed for maximum visibility and convenience, commercial strips along the roads of the rural-urban fringe include enormous parking lots in front of superstores that are set a great distance from the road, with a striking openness and lack of spatial definition or trees that might block views to a store, its merchandise, or its advertisements. The result is a landscape that people dislike, but somehow tolerate. Should we relegate commercial strip development at the rural-urban fringe to the visual category of landscape that includes industrial sites and junkyards? Or are there inexpensive ways to improve the visual quality, and ultimately, the experience of the users of such settings? In this paper, we explore the extent to which typical commercial development in a Midwestern US agricultural landscape impacts the visual quality of the countryside. We also explore the reactions of nearby residents to alternative patterns of commercial development at the rural-urban fringe.We begin by examining commercial development at the rural-urban fringe and the resulting landscape that it too often creates. Next, we review recent research regarding preferences for various landscape settings, focusing on roadsides, scenic corridors, and central business districts. Finally, reporting the results of a new study, we examine the extent to which local citizens prefer various development patterns for a roadway corridor at the fringe of a medium-sized community and discuss the implications of the findings for planning commissions, designers, and businesses.
(Landscape and Urban Planning 77 (2006) 152-166)