chapter 5 example in research

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Writing dissertation chapter 5: the biggest mistake students make, published by steve tippins on june 4, 2020 june 4, 2020.

Last Updated on: 2nd February 2024, 04:50 am

Chapter 5 of your dissertation is different from all of the previous four chapters.

If you’re beginning to write Chapter 5 of your dissertation, you know that most of the writing you’ve done up until now was fairly formulaic. You’ve probably been following templates with strict requirements about what needs to be included in each section and subsection. Even in Chapter 5, many schools will give you a template. But don’t let that fool you.

Regardless of whether you receive a rubric for it, Chapter 5 of your dissertation is unique. 

Your dissertation’s Chapter 5 is where you get to be more individualistic than in any other chapter and really “sing your song.” Why? It’s where you tell the reader what your results mean. Not just what they are, but what they mean. You tell them what they should take away from your study. You describe how your results can help others in the world or in the field. 

The Most Common Mistake Students Make When Writing Chapter 5 of Their Dissertation

The biggest mistake students make when writing their dissertation’s Chapter 5 is not writing enough. In fact, students often submit an “implications” section that’s only a few paragraphs.

As a committee member , it’s hard to see someone who has spent a year on a research topic and written 100+ pages about it and then get to the implications in Chapter 5 and see two paragraphs. This begs the question, “You mean this is all you have to say?”

Don’t cheat yourself in Chapter 5. Really explain and tell the story of what your results mean.

This is where you get to bring out your intellectual curiosity and help others really understand what you did and why you did it, what it means, and why it’s important. Of course, you’ll need to do this all within the guidelines of what your university will allow you to do. 

Normally Chapter 5 of a dissertation is about 15-20 pages. If it’s under ten pages, you’re really underselling your research. When you get to around 30-40 pages, your committee is going to wonder, “did all this come from your study?” or “couldn’t this have been said more succinctly?” 

Tips for Writing Dissertation Chapter 5

Reference the Literature. If you’re stumped for things to write, look at what you said in Chapter 2 and tell the reader what your results mean in relation to what the researchers you quoted in Chapter 2 were talking about.l How you have added knowledge to the field?

Consider Your Defense. When you do the defense of your final document, Chapter 5 is where you end up at the end of your presentation. This is the last thing you talk about before you get to questions, and it’s where you may be able to answer questions before they come up. 

Address Your Problem and Purpose. Don’t forget to remind the reader what your problem statement and research questions were at the beginning of Chapter 5. Explain how your results apply to the problem and purpose.

Back Everything Up. Also remember that even though it’s your chance to interpret and even express yourself, you still have to back everything up. Use quotes or data points from your results section and relate it to other research.

Use a Bird’s Eye View. This is where you can use graphics, charts, graphs, or other data that are much broader in scope than you might use elsewhere. In Chapter 4, for example, you’re going to use a graph that specifically relates to a statistical test you did. In Chapter 5, you might use one that’s broader in scope if it fits the flow of what you’re writing.

Tell a story. While other chapters might have been written in more of a compartmentalized style because of their formulaic nature, in Chapter 5 you’re really telling the story of your research. In line with that, the writing will need more of a flow. 

Dissertation Chapter 5 Sample Template With Explanations

Introduction 

In the introduction, tell the reader what they’re going to learn in Chapter 5. Reiterate the problem and purpose statements and your research questions and, if appropriate, reference the results from Chapter 4.

Implications

This is where you tell people here’s what the results of your study mean and why they are important. It also acts as a summary or “summing up” of the data. “These people said this,” or “this statistic was significant.” Make sure to support what you say with the research findings and avoid drawing conclusions that are beyond the scope of the study results.

Then discuss the real-world application of your findings. For example, “This is an approach that could be used by schools to help autistic children have better learning outcomes,” or “this is a technique that investors can use to predict valuable stock market returns.” Again, make sure to stay within the scope of your study.

Place your study in context. Describe how the results respond to the study problem, align with the purpose, demonstrate significance, and contribute to the existing literature described in Chapter 2. 

Recommendations

The recommendations section is where you get to say, “and if you want to take this further, here are some suggestions for ways that this could be broadened or enhanced.” Here are some examples of what these suggestions could look like:

• Different samples and populations
• Ways to get at any limitations you reported in your study
• Different approaches: qualitative if your study was quantitative, or quantitative if yours was qualitative, for example. Describe approaches that would be complementary to your study.
• Related research that you’re already working on. Sometimes researchers work on multiple complementary projects simultaneously. Occasionally, they’ll include another related study that they’re working on in their recommendations section. This establishes a clear path of knowledge.
• Practical, real-world suggestions. “Here are some recommendations for how this research could be used in the real world.”

The conclusion of Chapter 5 is where you get to wrap up your story. “And so, boys and girls, this is what all this came down to.” Okay, you might not want to phrase it like that. But that’s essentially what you’re doing.

Don’t try to add new information in the conclusion. Remember, it’s like a speech: tell them what you’re going to tell them, tell them, then tell them what you told them. 

Finishing Your Dissertation

Writing Chapter 5 and defending your dissertation is a big step towards getting your degree. Many students benefit from the support of a coach who is an experienced Dissertation Committee Chair at this point. A coach can conduct a mock defense with you in order to prepare you for the types of questions your committee will ask. Having answers to these questions can determine whether or not you pass your defense.

Check out my dissertation coaching services or contact me to book a free 30-minute consultation.

Steve Tippins

Steve Tippins, PhD, has thrived in academia for over thirty years. He continues to love teaching in addition to coaching recent PhD graduates as well as students writing their dissertations. Learn more about his dissertation coaching and career coaching services. Book a Free Consultation with Steve Tippins

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Chapter 5: Conclusion, Interpretation and Discussion

Introduction.

The following chapter concludes this report. A summary of the research is presented, and findings of the study are discussed and interpreted. The significance of this research in the immediate context of El Gallo and in the field of low-income housing is examined. Recommendations for further research end the chapter.

The scope of the following conclusions is limited to the context and historical characteristics of El Gallo. Thus, applied to other situations, these conclusions may yield incorrect assumptions. Still, these conclusions are relevant to the process of dwelling evolution in progressive development projects.

5.1 Summary of Research

This study observed the process of dwelling evolution in progressive development projects. The literature review was concentrated on the process of progressive development occurring in planned sponsored projects. It was found that, based on observations of the informal settlement process, progressive development under different contextual conditions was not questioned, and its benefits were taken for granted. Studies in the area were reduced to the period of improvement up to the time when the dwelling was physically consolidated. Longer term evaluation of progressive development projects were not found.

Research was undertaken on a 27-year-old progressive development project in Venezuela. The intention was to observe the process of dwelling evolution and the kind of housing that was being produced under progressive urban development projects on a long-term basis. The case study showed dwellings built with different initial levels of user-participation. Dwelling evolution was observed in a survey sample using parameters relevant to the case study (i.e., area increase, dwelling spatial growth and plot occupation, and changes in the functional structure).

Survey dwellings followed identifiable patterns of evolution in size, spatial structure and use-layout. Patterns were affected by aspects of the surrounding context and by aspects inherent to characteristics of the initial dwelling. Consequently, different dwelling groups showed different processes of progressive development.

5.2 Discussion and Interpretation of Findings.

As progressive developments, dwellings at El Gallo were able to adopt new and diverse roles along their whole process of evolution. In this section, relevant issues of the process of dwelling evolution observed at El Gallo are discussed. The first concerns the role of the non-permanent structure in the context of El Gallo as a sponsored progressive development project. The second comments on the process of dwelling evolution that followed the construction of the permanent structure.

In principle, non-permanent structures at El Gallo were similar to ranchos built in informal settlements. Ranchos at El Gallo served as primary shelters while more basic household priorities were met (i.e., services and infrastructure were provided, sources of income were found and generated, and even a favourable social environment was developed among neighbours). However, the majority of tin shacks were neither considerably increased nor upgraded with better materials even when they were used for long periods of time. This fact, together with the sudden change in the pace of development caused by the construction of a very complete permanent dwelling and subsequent removal of the rancho, had no connection with the gradual process of shack replacement observed in invasion settlements of Ciudad Guayana during this study (Portela, M. 1992). Neither did this process have a relationship with the system of "piecemeal construction" described by several housing researchers as characteristic of low-income dwellers.

The shanties were... housing in process of improvement. In particular the piecemeal system of building afforded great advantages to those who, like most of the poor in developing societies, have great variations in income from month to month (Peattie L. 1982:132).

Under El Gallo conditions of land security, ranchos did not show consolidation, and revealed their transient character because they were eventually substituted by permanent structures. The non-permanent structure revealed the primary household's aspiration for a minimum satisfactory habitable area. However, besides basic shelter during the initial stage, ranchos served to the purposes of capital accumulation that eventually allowed households to buy a basic unit according to official standards, or building a bigger, more complete first permanent structure. The size of ranchos reflected households' aspirations for the permanent dwelling, that is,smaller ranchos were substituted by basic units of the housing programs. Instead larger ranchos were substituted by large self-produced dwellings.

It is difficult to ascertain why ranchos were removed when they could have been kept as part of the dwelling, as in fact did a minority of households (2 cases). Is a fact that the temporary materials of ranchos contributed to their deterioration that ended with the total removal of the rancho. However, an idea that may have contributed to the demolition of the rancho was the household's adoption of the planner's belief that ranchos were a bad but necessary step on the way to obtaining permanent housing. Thus, once the permanent dwelling was built, the price households paid to gain credibility (i.e., that this stage was reached) was the demolition of the rancho itself. This interpretation can be specially true for Ciudad Guayana, where dwellings of certain quality such as those of El Gallo were seen as "casas" or houses. Instead, structures of similar quality in the hills of cities such as Caracas were still considered ranchos. In the long run, informal settlements obtained the largest benefits from this process because they gained far more official tolerance and social credibility (i.e., that shacks were actually temporary means of residence towards good-quality housing).

Those who lived in smaller ranchos improved their spatial conditions by moving to the small basic dwellings. Those who occupied bigger ranchos built bigger dwellings by themselves. Still, some households built their dwellings without going through the rancho stage. Self-produced dwellings followed the formal models either to gain the government's credibility of user commitment to build "good" government-like housing, or because households believed so. Imitation of the formal models, however, varied according to the builder's interpretation. For instance, the pattern of the detached dwelling was adopted, but often one of the side yards was reduced to a physical separation between the dwelling and the plot separation wall. More effective interpretations involved enlarging the front porch or using the central circulation axis to allow easy extension in the future.

The building approach of the permanent structure influenced the process of evolution that followed. Basic units built by the housing agencies had a compact, complete layout with higher standards of construction; however, aspects of the design, such as internal dimensions, were inadequate for household criteria, and the layout was not well adapted. Dwellings built according to provided plans and specificationshad similar problems, but households enlarged spaces and modified layouts when they were building the units. The level of construction standards was also reduced since the lateral façades of some dwellings were unfinished. Dwellings built totally by self-help means were the largest permanent structures. Aspects of the design of the first permanent structure allowed easy extension of the dwelling towards open areas of the plot. More user participation was reflected in straight-forward processes of evolution without internal modifications, and fewer stages to reach the current houseform.

5.3 Significance of the Study

While this study acknowledges again the effectiveness of progressive development in the housing system, it shows how dwelling evolution in progressive development projects can have different characteristics produced by internal and external interventions. Usually, projects are designed and launched to reproduce certain desirable outcomes and meet specific expectations. However, conditions prevailing in these projects and sometimes strategies that are introduced to "improve," "speed up" or make more "efficient" the process of evolution can affect the outcome in many different ways. This study showed how contextual characteristics of El Gallo, as well as the design and level of user participation in the initial permanent dwelling, affected successive stages of progressive development. However, it is important to recognize that are other issues beyond the spatial aspects that are intrinsically related with the evolution of the dwellings and that were not included within the scope of these particular research (i.e., household's changes in income, size, and age or gender structure).

The findings at El Gallo add modestly to the body of knowledge of literature on progressive development. Progressive Urban Development Units, UMUPs , have been the main housing strategy in Ciudad Guayana these last years, and they are likely to keep being used. Simple facts such as knowing the characteristics of the additions and modifications that households make to their dwellings over time can be the basis for more assertive actions supporting or enforcing progressive development activities. Understanding the process of dwelling evolution in low-income developments would be an effective way to help the process that, in the case of Ciudad Guayana, zonings and bylaws have been unable to regulate.

5.4 Recommendations for Further Research

Long term assessments are particularly constrained by the availability and reliability of recorded data. The frequency, and often the methodology, in which censuses and surveys are made do not always suit the purposes of this kind of research. Household interviews are very important, but they may become troubled by informant's limited memories and the continuity of the household in the dwelling. Aerial documentation, if available, represents one of the most reliable sources to observe physical change. Nevertheless, a careful and detailed process of observation of aerial data becomes very time consuming. For similar studies, a first phase in which the housing diversity is identified in the aerial data according to the selected criteria, would allow to reduce the number of detailed survey samples needed, thus considerably reducing the time of data collection.

In the context of Ciudad Guayana, further studies of the non-permanent dwelling in recent UMUPs would reveal new insights into the function of these structures in progressive development projects. This would be essential especially if any kind of initial aid is to be provided. On the other hand, following the growth of progressive developments is necessary if services and infrastructure are, as they are now, the responsibility of the local government. Identifying the producers of physical evolution -- i.e., the drivers and catalysts of change -- would be an important step for further research. An interesting step within this trend could be to ascertain the extent in which other household processes -- family growth, income increase and economic stability, household aging, changes in the household composition (single- to multi- family), etc., affect the process of dwelling evolution.

In the context of low-income housing, the process of progressive development needs further understanding. As in Ciudad Guayana, progressive development is likely to be the main housing strategy for other developing countries in the near future. Local authorities would do well to follow the evolution of settlements and to identify real household needs, and the consequences of public and/or private interventions in low-income settlements. Perhaps the most important learning of this study is that the experience of El Gallo acknowledges again the dynamic participation of the low-income households under different conditions, and still leaves wide room for a positive participation for the many other actors in the evolving urban entity.

. Notes for Chapter V

1 Dodge reports that some settlers of Ciudad Guayana kept the rancho and rented it to poorer families (Dodge,C. 1968:220). This attitude has been more common in other progressive development projects. The Dandora site and services also encouraged the construction of temporary shacks while the permanent dwelling was built. However, non-permanent structures remained to be rented or used as storage areas even after the permanent dwelling was built (McCarney, P.L. 1987:90).

Department and University Information

Minimum cost housing group.

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• How to Write Recommendations in Research | Examples & Tips

How to Write Recommendations in Research | Examples & Tips

Published on September 15, 2022 by Tegan George . Revised on July 18, 2023.

Recommendations in research are a crucial component of your discussion section and the conclusion of your thesis , dissertation , or research paper .

As you conduct your research and analyze the data you collected , perhaps there are ideas or results that don’t quite fit the scope of your research topic. Or, maybe your results suggest that there are further implications of your results or the causal relationships between previously-studied variables than covered in extant research.

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Table of contents

What should recommendations look like, building your research recommendation, how should your recommendations be written, recommendation in research example, other interesting articles, frequently asked questions about recommendations.

Recommendations for future research should be:

• Concrete and specific
• Supported with a clear rationale
• Directly connected to your research

Overall, strive to highlight ways other researchers can reproduce or replicate your results to draw further conclusions, and suggest different directions that future research can take, if applicable.

Relatedly, when making these recommendations, avoid:

• Undermining your own work, but rather offer suggestions on how future studies can build upon it
• Suggesting recommendations actually needed to complete your argument, but rather ensure that your research stands alone on its own merits
• Using recommendations as a place for self-criticism, but rather as a natural extension point for your work

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There are many different ways to frame recommendations, but the easiest is perhaps to follow the formula of research question   conclusion  recommendation. Here’s an example.

Conclusion An important condition for controlling many social skills is mastering language. If children have a better command of language, they can express themselves better and are better able to understand their peers. Opportunities to practice social skills are thus dependent on the development of language skills.

As a rule of thumb, try to limit yourself to only the most relevant future recommendations: ones that stem directly from your work. While you can have multiple recommendations for each research conclusion, it is also acceptable to have one recommendation that is connected to more than one conclusion.

These recommendations should be targeted at your audience, specifically toward peers or colleagues in your field that work on similar subjects to your paper or dissertation topic . They can flow directly from any limitations you found while conducting your work, offering concrete and actionable possibilities for how future research can build on anything that your own work was unable to address at the time of your writing.

See below for a full research recommendation example that you can use as a template to write your own.

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While it may be tempting to present new arguments or evidence in your thesis or disseration conclusion , especially if you have a particularly striking argument you’d like to finish your analysis with, you shouldn’t. Theses and dissertations follow a more formal structure than this.

All your findings and arguments should be presented in the body of the text (more specifically in the discussion section and results section .) The conclusion is meant to summarize and reflect on the evidence and arguments you have already presented, not introduce new ones.

The conclusion of your thesis or dissertation should include the following:

• A restatement of your research question
• A summary of your key arguments and/or results
• A short discussion of the implications of your research

For a stronger dissertation conclusion , avoid including:

• Important evidence or analysis that wasn’t mentioned in the discussion section and results section
• Generic concluding phrases (e.g. “In conclusion …”)
• Weak statements that undermine your argument (e.g., “There are good points on both sides of this issue.”)

Your conclusion should leave the reader with a strong, decisive impression of your work.

In a thesis or dissertation, the discussion is an in-depth exploration of the results, going into detail about the meaning of your findings and citing relevant sources to put them in context.

The conclusion is more shorter and more general: it concisely answers your main research question and makes recommendations based on your overall findings.

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Improved Surface Drainage of Pavements: Final Report (1998)

Chapter: chapter 5 summary, findings, and recommendations.

Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book. Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.

CHAPIER 5 SI~MARY, FINDINGS, AND RECOMMENDATIONS SUGARY The primary objective of this research was to identify unproved methods for draining rainwater from the surface of multi-lane pavements and to develop guidelines for their use. The guidelines, along with details on the rationale for their development, are presented in a separate document' "Proposed Design Guidelines for Improving Pavement Surface Drainage" (2J. The guidelines support an interactive computer program, PAVDRN, that can be used by practicing engineers In the process of designing new pavements or rehabilitating old pavements' is outlined In figure 39. The intended audience for the guidelines is practicing highway design engineers that work for transportation agencies or consulting firms. Improved pavement surface drainage is needed for two reasons: (~) to minimize splash and spray and (2) to control the tendency for hydroplaning. Both issues are primary safety concerns. At the request of the advisory panel for the project, the main focus of this study was on ~mprov~g surface drainage to mammae the tendency for hydroplaning. In terms of reducing the tendency for hydroplaTuT g, the needed level of drainage is defined in terms of the thickness of the film of water on the pavement. Therefore, the guidelines were developed within the context of reducing the thickness of the water film on pavement surfaces to the extent that hydroplaning is unlikely at highway design speeds. Since hydroplaning is ~7

DESIGN CRITERIA Pavement Geometry Number of lanes Section type - Tangent - Horizontal curve - Transition - Vertical crest curve - Vertical sag curve Enviromnental oramaters Rainfall intensity ~ Temperature Pavement Tvpe Dense-graded asphalt Porous asphalt Portland cement concrete ~ Grooved Portland cement concrete Desion Soeed Allowable speed for onset of hydroplaning Recommend Desion Changes Alter geometry Alter pavement surface Add appurtenances Groove (Portland cement concrete) CALCULATIONS Lenoth of flow path Calculate on basis of pavement geometry IT Hydraulic Analvses .  No? Water film thickness Equation No. 10 Equation No.'s. 16-19 1 Hvdroolanino Analvsis Hydroplaning speed Equation No.'s 21-24 Rainfall Intensity Equation No. 25 -A I / Meet Design ~ \ Cntena? / \<es? Accent Desinn | Figure 39. Flow diagram representing PAVI)RN design process In "Proposed Guidelines for Improving Pavement Surface DrmT~age" (2). 118

controlled primarily by the thickness of the water film on the pavement surface, the design guidelines focus on the prediction and control of ache depth of water flowing across the pavement surface as a result of rainfall, often referred to as sheet flow. Water film thickness on highway pavements can be controlled In three fundamental ways, by: I. Minimizing the length of the longest flow path of the water over We pavement and thereby the distance over which the flow can develop; 2. Increasing the texture of the pavement surface; and 3. Removing water from the pavement's surface. In the process of using PAVDRN to implement the design guidelines, the designer is guided to (~) minimize the longest drainage path length of the section under design by altering the pavement geometry and (2) reduce the resultant water film thickness that will develop along that drainage path length by increasing the mean texture depth, choosing a surface that maximizes texture, or using permeable pavements, grooving, and appurtenances to remove water from the surface. Through the course of a typical design project, four key areas need to be considered in order to analyze and eventually reduce the potential for hydroplaning. These areas are: ~9

I. Environmental conditions: 2. Geometry of the roadway surface; 3. Pavement surface (texture) properties; and 4. Appurtenances. Each of these areas and their influence on the resulting hydroplaning speed of the designed section are discussed In detail In the guidelines (21. The environmental conditions considered are rainfall ~ntensibr and water temperature, which determines the kinematic viscosity of the water. The designer has no real control over these environmental factors but needs to select appropriate values when analyzing the effect of flow over the pavement surface and hydroplaning potential. Five section types, one for each of the basic geometric configurations used In highway design, are examined. These section are: 1. TaIlgent; 2. Superelevated curve; 3. Transition; 4. Vertical crest curve; and 5. Vertical sag curve. 120

Pavement properties that affect the water fihn thickness mclude surface characteristics, such as mean texture depth and grooving of Portland cement concrete surfaces, are considered In the process of applying PAVDRN. Porous asphalt pavement surfaces can also reduce He water film thickness and thereby contribute to the reduction of hydroplaning tendency and their presence can also be accounted for when using PAVDRN. Finally, PAVDRN also allows the design engineer to consider the effect of drainage appurtenances, such as slotted drain inlets. A complete description of the various elements that are considered In the PAVDRN program is illustrated In figure 40. A more complete description of the design process, the parameters used in the design process, and typical values for the parameters is presented In the "Proposed Design Guidelines for Improving Pavement Surface Drainage" (2) alla in Appendix A. fIN1)INGS The following findings are based on the research accomplished during the project, a survey of the literature, and a state-of-the-art survey of current practice. I. Model. The one~unensional mode} is adequate as a design tool. The simplicity and stability of the one~imensional mode} offsets any increased accuracy afforded by a two-d~mensional model. The one~mensional model as a predictor of water fiDn thickness and How path length was verified by using data from a previous study (11). 121

No. of Planes Length of Plane Grade Step Increment Wdth of Plane Cross Slope Section T,rne 1) Tangent 2) Honzontal Curare 3) Transition 4) Vertical Crest 5) Vertical Sag U=tS 1)U.S. 2) S. I. Rainfall Intenstity ~ , \ |Kinematic Viscosity |Design Speed Note: PC = Point of Curvature PI. = Point of Tangency PCC = Portland cement concrete WAC = Dense graded asphalt concrete 0GAC = 0pcn~raded asphalt concrete where OGAC includes all types of intentally draining asphalt surfaces GPCC = Grooved Ponland cement concrete Taneent Pavement Type Mean Texture Depth 1) PCC 2) DGAC 3) OGAC 4) GPCC Horizontal Cun~c  Grade Cross Slope Radius of Cunran~re Wdth Pavement Type _ 2) DGAC 3) OGAC 4) GPCC Mean Texture Depth Step Increment _ Transition Length of Plane Super Elevation Tangent Cross Slope Tangent Grade width of Curve Transition Width Pavement Type_ 1) PCC 3) OGAC 4) GPCC Mean Texture Depth Step Increment Horizontal Length Cross slope width PC Grade PI' Grade Elevation: Pr-PC Vertical Crest Flow Direction Step Increment Pavement Type 1) PC Side I 2) PI. Side | 1)PCC 2) DGAC 3) OGAC 4) GPCC Mean Tex~rc Depth _ _ ~ Figure 40. Factors considered in PAVDRN program. 122 ~1 r - . , Vertical Sad | Horizontal Length | Cross slope Wldth PC Grade PI Grade Elevation: PIE Flow Direction  Step Increment / Stored :_ ~ cats ~ 1) PC Side | 2) PI Side | . Pavement Typed 1) PCC 3) OGAC 14) GPCC Mean Texture Depth I I

~ Stored data V ~ 3 L IN1T For use with a second nut using data from the first run.) , 1 EPRINT (Echos input to output ) 1 CONVERT (Converts units to and from SI and English.) ~ , ADVP  (Advances Page of output.) KINW (Calculates Minning's n, Water Film Thickness (WEIR), and Hydroplaning Speed UPS).) , EDGE (Determines if flow has reached the edge of the pavement.) out roar Figure 40. Factors considered in PAVDRN program (continued). 123

2. Occurrence of Hydropl~r g. In general, based on the PAVDRN mode! and the assumptions inherent in its development, hydroplaning can be expected at speeds below roadway design speeds if the length of the flow path exceeds two lane widths. 3. Water Film Thickness. Hydroplaning is initiated primarily by the depth of the water film thickness. Therefore, the primary design objective when controlling hydroplaning must be to limit the depth of the water film. 4. Reducing Water Film Thickness. There are no simple means for controlling water John thickness, but a number of methods can effectively reduce water film thickness and consequently hydroplaning potential. These include: Optimizing pavement geometry, especially cross-slope. Providing some means of additional drainage, such as use of grooved surfaces (PCC) or porous mixtures (HMA). Including slotted drains within the roadway. 5. Tests Needed for Design. The design guidelines require an estimate of the surface texture (MTD) and the coefficient of permeability Porous asphalt only). The sand patch is an acceptable test method for measuring surface texture, except for the more open (20-percent air voids) porous asphalt mixes. In these cases, an estimate of the surface texture, based on tabulated data, is sufficient. As an alternative, 124

sand patch measurements can be made on cast replicas of the surface. For the open mixes, the glass beads flow into the voids within the mixture, giving an inaccurate measure of surface texture. Based on the measurements obtained In the laboratory, the coefficient of permeability for the open-graded asphalt concrete does not exhibit a wide range of values, and values of k may be selected for design purposes from tabulated design data (k versus air voids). Given the uncertainty of this property resulting from compaction under traffic and clogging from contaminants and anti-skid material, a direct measurement (e.g., drainage lag permeameter) of k is not warranted. Based on the previous discussion, no new test procedures are needed to adopt the design guidelines developed during this project. 6. Grooving. Grooving of PCC pavements provides a reservoir for surface water and can facilitate the removal of water if the grooves are placed parallel to the flow oath. Parallel orientation is generally not practical because the flow on highway pavements is typically not transverse to the pavement. Thus, the primary contribution offered by grooving is to provide a surface reservoir unless the grooves comlect with drainage at the edge of the pavement. Once the grooves are filled with water, the tops of the grooves are the datum for the Why and do not contribute to the reduction in the hydroplaning potential. 125

7. Porous Pavements. These mixtures can enhance the water removal and Hereby reduce water film tHch~ess. They merit more consideration by highway agencies In the United States, but they are not a panacea for eliminating hydroplaning. As with grooved PCC pavements, the internal voids do not contribute to the reduction of hydroplaning; based on the field tests done In this study. hv~ronImiina can be if, , , ~ expected on these mixtures given sufficient water fiLn thickness. Other than their ability to conduct water through internal flow, the large MTD offered by porous asphalt is the main contribution offered by the mixtures to the reduction of hydroplaning potential. The high-void ~ > 20 percent), modified binder mixes used In Europe merit further evaluation in the United States. They should be used In areas where damage from freezing water and the problems of black ice are not likely. 8. Slotted Drains. These fixtures, when installed between travel lanes, offer perhaps the most effective means of controlling water film thickness from a hydraulics standpoint. They have not been used extensively In the traveled lanes and questions remain unanswered with respect to their installation (especially in rehabilitation situations) and maintenance. The ability to support traffic loads and still maintain surface smoothness has not been demonstrated and they may be susceptible to clogging from roadway debris, ice, or snow. 126

RECOMMENDATIONS AND CONCLUSIONS The following recommendations are offered based on the work accomplished during this project and on the conclusions given previously: I. Implementation. The PAVDRN program and associated guidelines need to be field tested and revised as needed. The program and the guidelines are sufficiently complete so that they can be used in a design office. Some of the parameters and algorithms will I~ely need to be modified as experience is gained with the program. 2. Database of Material Properties. A database of material properties should be gathered to supplement the information contained in PAVDRN. This information should Include typical values for the permeability of porous asphalt and topical values for the surface texture (MTD) for different pavement surfaces to include toned Portland cement concrete surfaces. A series of photographs of typical pavement sections and their associated texture depths should be considered as an addition to the design guide (21. 3. Pavement Geometry. The AASHTO design guidelines (~) should be re-evaluated In terms of current design criteria to determine if they can be modified to enhance drainage without adversely affecting vehicle handling or safety. ~27

4. Use of appurtenances. Slotted drams should be evaluated In the field to determine if they are practical when Installed In the traveled way. Manufacturers should reconsider the design of slotted drains and their Installation recommendations currently In force to maximize them for use In multi-lane pavements and to determine if slotted drains are suitable for installations In the traveled right of way. 5. Porous Asphalt Mixtures. More use should be made of these mixtures, especially the modified high a~r-void mixtures as used In France. Field trials should be conducted to monitor HPS and the long-term effectiveness of these mixtures and to validate the MPS and WDT predicted by PAVDRN. 6. Two-D~mensional Model. Further work should be done with two~mensional models to determine if they improve accuracy of PAVDRN and to determine if they are practical from a computational standpoint. ADDITIONAL STUDIES On the basis of the work done during this study, a number of additional items warrant furler study. These Include: 1. Full-scale skid resistance studies to validate PAVDRN in general and the relationship between water film thickness and hydroplaning potential in particular are needed in light of the unexpectedly low hvdronlanin~ speeds predicted during 128 , . ~. , ~

this study. The effect of water infiltration into pavement cracks and loss of water by splash and spray need to be accounted for In the prediction of water fihn Sickness. Surface Irregularities, especially rutting, need to be considered in the prediction models. 2. Field trials are needed to confirm the effectiveness of alternative asphalt and Portland cement concrete surfaces. These include porous Portland cement concrete surfaces, porous asphalt concrete, and various asphalt m~cro-surfaces. 3. The permeability of porous surface mixtures needs to be confirmed with samples removed from the field, and the practicality of a simplified method for measuring in-situ permeability must be investigated and compared to alternative measurements, such as the outflow meter. 4. For measuring pavement texture, alternatives to the sand patch method should be investigated, especially for use with porous asphalt mixtures. 129

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Chapter 5: Experimental Research

In the late 1960s social psychologists John Darley and Bibb Latané proposed a counter-intuitive hypothesis. The more witnesses there are to an accident or a crime, the less likely any of them is to help the person who is experiencing the crime (Darley & Latané, 1968) [1] .

They also suggested the theory that this phenomenon occurs because each witness feels less responsible for helping—a process referred to as the “diffusion of responsibility.” Darley and Latané noted that their ideas were consistent with many real-world cases. For example, a New York woman named Catherine “Kitty” Genovese was assaulted and murdered while several witnesses evidently failed to help. But Darley and Latané also understood that such isolated cases did not provide convincing evidence for their hypothesized “bystander effect.” There was no way to know, for example, whether any of the witnesses to Kitty Genovese’s murder would have helped had there been fewer of them.

So to test their hypothesis, Darley and Latané created a simulated emergency situation in a laboratory. Each of their university student participants was isolated in a small room and told that they would be having a discussion about university life with other students via an intercom system. Early in the discussion, however, one of the students began having what seemed to be an epileptic seizure. Over the intercom came the following: “I could really-er-use some help so if somebody would-er-give me a little h-help-uh-er-er-er-er-er c-could somebody-er-er-help-er-uh-uh-uh (choking sounds)…I’m gonna die-er-er-I’m…gonna die-er-help-er-er-seizure-er- [chokes, then quiet]” (Darley & Latané, 1968, p. 379) .

In actuality, there were no other students. These comments had been prerecorded and were played back to create the appearance of a real emergency. The key to the study was that some participants were told that the discussion involved only one other student (the person experiencing this event), others were told that it involved two other students, and still others were told that it included five other students. Because this was the only difference between these three groups of participants, any difference in their tendency to help the person experiencing the event would have to have been caused by it. And sure enough, the likelihood that the participant left the room to seek help for the “person impacted by this event” decreased from 85% to 62% to 31% as the number of “witnesses” increased.

The Parable of the 38 Witnesses

The story of Kitty Genovese has been told and retold in numerous psychology textbooks. The standard version is that there were 38 witnesses to the crime, that all of them watched (or listened) for an extended period of time, and that none of them did anything to help. However, recent scholarship suggests that the standard story is inaccurate in many ways (Manning, Levine, & Collins, 2007) [2] . For example, only six eyewitnesses testified at the trial, none of them was aware that they were witnessing a lethal assault, and there have been several reports of witnesses calling the police or even coming to the aid of Kitty Genovese. Although the standard story inspired a long line of research on the bystander effect and the diffusion of responsibility, it may also have directed researchers’ and students’ attention away from other equally interesting and important issues in the psychology of helping—including the conditions in which people do in fact respond collectively to emergency situations.

The research that Darley and Latané conducted was a particular kind of study called an experiment. Experiments are used to determine not only whether there is a meaningful relationship between two variables but also whether the relationship is a causal one that is supported by statistical analysis. For this reason, experiments are one of the most common and useful tools in the psychological researcher’s toolbox. In this chapter, we look at experiments in detail. We will first consider what sets experiments apart from other kinds of studies and why they support causal conclusions while other kinds of studies do not. We then look at two basic ways of designing an experiment—between-subjects designs and within-subjects designs—and discuss their pros and cons. Finally, we consider several important practical issues that arise when conducting experiments.

• Darley, J. M., & Latané, B. (1968). Bystander intervention in emergencies: Diffusion of responsibility. Journal of Personality and Social Psychology, 4 , 377–383. ↵
• Manning, R., Levine, M., & Collins, A. (2007). The Kitty Genovese murder and the social psychology of helping: The parable of the 38 witnesses. American Psychologist, 62 , 555–562. ↵

Psychology Research Methods Copyright © 2022 by Jesslin Hancock is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License , except where otherwise noted.

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A New Chapter for Irish Historians’ ‘Saddest Book’

A globe-spanning research project has turned the catalog of a public archive destroyed in Ireland’s civil war into a model for reconstruction.

By Ed O’Loughlin

Reporting from Dublin

In the first pitched battle of the civil war that shaped a newly independent Ireland, seven centuries of history burned.

On June 30, 1922, forces for and against an accommodation with Britain, Ireland’s former colonial ruler, had been fighting for three days around Dublin’s main court complex. The national Public Record Office was part of the complex, and that day it was caught in a colossal explosion . The blast and the resulting fire destroyed state secrets, church records, property deeds, tax receipts, legal documents, financial data, census returns and much more, dating back to the Middle Ages.

“It was a catastrophe,” said Peter Crooks, a medieval historian at Trinity College Dublin. “This happened just after the First World War, when all over Europe new states like Ireland were emerging from old empires. They were all trying to recover and celebrate their own histories and cultures, and now Ireland had just lost the heart of its own.”

But perhaps it was not lost forever. Over the past seven years, a team of historians, librarians and computer experts based at Trinity has located duplicates for a quarter of a million pages of these lost records in forgotten volumes housed at far-flung libraries and archives, including several in the United States. The team then creates digital copies of any documents that it finds for inclusion in the Virtual Record Treasury of Ireland , an online reconstruction of the archive. Still a work in progress, the project says its website has had more than two million visits in less than two years.

Funded by the Irish government as part of its commemorations of a century of independence, the Virtual Treasury relies in part on modern technologies — virtual imaging, online networks, artificial intelligence language models and the growing digital indexes of archives around the world — but also on dusty printed catalogs and old-school human contacts. Key to the enterprise has been a book, “A Guide to the Records Deposited in the Public Record Office of Ireland,” published three years before the fire by the office’s head archivist, Herbert Wood.

“For a long time, Wood’s catalog was known to Irish historians as the saddest book in the world, because it only showed what was lost in the fire,” Dr. Crooks said. “But now it has become the basis for our model to recreate the national archive. There were 4,500 series of records listed in Wood’s book, and we went out to look for as many of them as we could find.”

A major partner in this hunt was the National Archives in Britain, to which centuries of Irish government records — notably tax receipts — had been sent in duplicate. The Public Record Office of Northern Ireland, which remains part of the United Kingdom, has also been a major partner, contributing records from the centuries before Ireland was partitioned in 1921.

A considerable haul of documents has also been uncovered in the United States. The Library of Congress, for example, dug up dozens of volumes of lost debates from Ireland’s 18th-century Parliament. According to David Brown, who leads the Virtual Treasury’s trawl through domestic and overseas archives, before this trove of political history came into Congress’s possession, one previous owner had tried to sell it as fuel. Serendipity has often played a role in such U.S. discoveries, he said.

“You would have old family records stored away in some gentleman’s library, and he’d move to the colonies, and take the books with him,” Dr. Brown said. “Or else heirs would eventually sell the old library off to collectors, and eventually an American university or library might buy the collection, maybe because they wanted something important in it, and they took everything else that came with it. Archivists may not always know what they have, but they never throw anything out.”

The Huntington Library in California, and libraries of the universities of Kansas, Chicago, Notre Dame, Yale and Harvard are among around a dozen U.S. organizations to respond positively to the hopeful request from the Irish: “Do you have anything there that might be of interest to us?” And in the process of hunting down material that is already on its radar, the Virtual Treasury team is also uncovering, and incorporating, unexpected treasures.

One is a previously unnoticed 1595 letter shown to Dr. Brown late last year while he was visiting Yale’s Lewis Walpole Library to view some other material. In it, Sir Ralph Lane — a founder and survivor of the infamous lost colony of Roanoke, off North Carolina, which had vanished in the decade before this letter was written — petitions Queen Elizabeth I to order the conquest of Ulster, then a Gaelic stronghold in the north of English-ruled Ireland.

Dr. Brown, a specialist in early modern Atlantic history, said the letter — long overlooked because it was bound in a volume with much later documents — showed the close connection between England’s colonial conquests in North America and Ireland, both in the personalities involved and their motivation. The letter suggests conquering Ulster primarily so that the English could seize the inhabitants’ land, and it proposes paying for the war by looting the Ulster chiefs’ cattle. The area was ultimately conquered and colonized in 1609, six years after Lane’s death.

“For the Elizabethan adventurers, colonialism was a branch of piracy. All they wanted was land,” Dr. Brown said. “Roanoke hadn’t worked out for Lane, and Elizabeth had just granted Sir Walter Raleigh 10,000 acres of land in Munster,” in the south of Ireland. “So Lane thought, if Raleigh got 10,000 acres in Munster, why can’t I have 10,000 acres in Ulster?”

Another contribution to the project could be seen in contemporary Northern Ireland, at the Public Record Office in Belfast. The head of conservation, Sarah Graham, was restoring and preserving a collection of records and letters kept by Archbishop John Swayne, who led the church in Ireland in the 15th century. Watching her at work was Lynn Kilgallon, research fellow in medieval history for the Virtual Treasury. Once preserved, its pages will be digitized and added to Dublin’s online archive.

“If you don’t understand the words in a book, it becomes just an object,” Ms. Graham said. “You need someone to read it — medievalists like Lynn here, to bring it to life.”

You do not necessarily need to be a specialist to read the documents in the Virtual Treasury, however. New artificial intelligence models developed for the project allow archivists to turn ancient handwriting into searchable digital text, with modern translations.

The site went online in June 2022, the 100th anniversary of the records office fire, and is aiming for 100 million searchable words by 2025, a target it says it is three-quarters of the way to reaching. Eventually, it hopes to recover 50 to 90 percent of records from some priority areas, such as censuses from before and after Ireland’s Great Famine in the mid-19th century, which are of particular value to historians, and to people of Irish descent tracing their roots. More than half of the details of the first nationwide census of Ireland, a religious head count in 1766, have been retrieved and published.

“Cultural loss is sadly a very prominent theme in the world right now, and I don’t think there is an example like this, where there’s been so much international cooperation in the reconstruction of a lost archive,” Dr. Crooks said. “It shows that the collective culture of many countries can be brought together to achieve a goal. Borders are fluid.”

Fortnite: Best Chapter 5 Season 2 Landing Spots

• Charon's Crossing offers beginner players plenty of loot and easy access to rotating to other POIs for quick engagements.
• Summit Temple on the edge of the map provides high rarity loot and natural resources while linking to nearby POIs for rotation.
• Research Rock in the corner of the map is underrated but a goldmine for loot with 22 chests and farming opportunities.

Fortnite ’s Chapter 5 Season 2 is in full swing, and players are excited to explore the Greek mythology-inspired map. The map is filled with secret corners, cabins, and spots awaiting a player’s discovery. While all these locations have valuable items players can loot, some have more potential than others. This makes picking the best landing spot crucial to surviving the match and claiming a Victory Royale. Players who want to excel should pick locations on the map that suit individual playstyles while providing solid loot.

Fortnite: All Chapter 5 Season 2 Battle Pass Skins

The best landing spots in Fortnite have sufficient loot spawn, are out of the way, and are close to POIs (points of interest). Since there’s no shortage of fantastic landing spots, picking the ideal locations boils down to the player’s preferences. Here’s a list of the best landing spots in Chapter 5 Season 2.

Charon’s Crossing

Optimal location with multiple loot routes.

Charon’s Crossing is located in the Underworld biome, and it's a lowkey landing spot with a good amount of loot. Players can find up to five chests in this location with reliable weapons and shields. The beauty of Charon’s Crossing is that it’s close to other high POIs like Grim’s Gate. So, players can drop, loot chests, and rotate to these POIs quickly and easily .

Charon’s Crossing is ideal for beginner Fortnite players who want a chill landing spot where they can grab sufficient loot. It’s not too contested and is right next to the water, which players can use to get more loot, activate the Underworld Dash, and rotate.

Summit Temple

A good amount of valuable loot and natural resources.

Summit Temple is located near the Mount Olympus POI at the edge of the map. The landing spot has up to eight chests for players to loot and plenty of natural resources for farming. Summit’s Temple is one of the few Fortnite locations with Olympus chests , which contain blue or higher rarity weapons alongside the Wings of Icarus item.

Fortnite: Chapter 5 Season 2 Kickstart Quests

Although Summit Temple is at the edge of the map, it’s close to other POIs, where players can rotate. Players should consider landing at the base camp to obtain loot before branching out towards the building on the slope with 11 slurp barrels and more chests. There are also more chests at the top of the hill in a tent camp, plus a Launch Pad for rotation.

Cliffside Lodge

A deadside region with valuable loot.

Cliffside Lodge is located in Brawler’s Battleground at the south corner of the map. It’s a deadside location, meaning players land here after missing other POI spots near Mount Olympus. So, there’s a chance players may run into a few opponents, but for the most part, it's uncontested.

Cliffside Lodge has plenty of weapon chests for players to loot and several slurp barrels and kegs for shields. Players should know that Cliffside Lodge isn’t close to water, so rotation may be a challenge if they can't find the Wings of Icarus , but it’s close to POIs like Brawler’s Battleground and Mount Olympus. When dropping into this location, land at the top of the house since most chests are on top floors, then work your way down.

Research Rock

Riddled with loot.

Research Rock is located east of Brawler's Battleground, and it’s one of the greatest Fortnite POIs with tons of loot. The region has up to 22 chests with weapons of blue and higher rarities . Many players often underrate Research Rock since it's at the corner of the map, and it's relatively small compared to other POIs in this biome.

Fortnite: Chapter 5 Season 2 Milestone Quests

However, it has large amounts of chests and tons of metal for farming. Players who want locations with sufficient loot should consider landing at Research Rock. Here, they can find enough to loot, eliminating the need to visit other POIs for better weapons and more shields.

Central Location with a Large Amount of Loot

Grim Gate is located in the Underworld biome, and it's a central location with a lot of loot . Players can loot up to 36 chests in this area and farm plenty of materials, including brick. The central location of Grim Gate offers players access to various POIs for rotation, but this means it may be contested, so players should be ready for enemy encounters.

Grim Gate is one of the few Fortnite locations containing Underworld Chests, so players should consider landing here to acquire the Wings of Icarus or Cerberus's Aspect of Agility medallion . Players can also find several slurp barrels and kegs for shields. Even though Grim Gate is a smaller and more concentrated version of Underworld, it’s one of the best landing spots in Fortnite .

Platform(s) Xbox Series S, Xbox Series X, Switch, PS5, PC, iOS, Android, Mobile, Xbox One

Released July 25, 2017

Developer(s) Epic Games

Genre(s) Survival, Battle Royale

Multiplayer Online Multiplayer