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74-565: The Alster is Hamburg's second most important river. While the Elbe river is a tidal navigation of international significance and prone to flooding, the Alster is a non-tidal, slow-flowing and in some places, seemingly untouched idyll of nature, in other places tamed and landscaped urban space . In the city center, the river forms two lakes, both prominent features in Hamburg's cityscape . In total,

148-405: A corporate , although this term can also apply to cooperating companies and their subsidiaries with varying degrees of shared ownership. A parent company does not have to be the larger or "more powerful" entity; it is possible for the parent company to be smaller than a subsidiary, such as DanJaq , a closely held family company, which controls Eon Productions , the large corporation which manages

222-487: A definition that provides that "control" is "the capacity of an entity to dominate decision-making, directly or indirectly, in relation to the financial and operating policies of another entity so as to enable that other entity to operate with it in pursuing the objectives of the controlling entity". This definition was adapted in the Australian Corporations Act 2001 : s 50AA. Furthermore, it can be

296-529: A few decades, a culture of public political gatherings and outdoor cafes emerged. Non-sustainable gardening , including mowing , use of chemical fertilisers , herbicides and pesticides harm green spaces. Contrariwise, one of the conditions for good urban open space is sustainable gardening . At the beginning of the 21st century, studies began to show that living in areas near water (known as " blue spaces ") considerably improved physical and mental health, increasing life longevity. Green space access

370-755: A four-fold pattern called chahar bagh or chahār bāgh . often appearing as fountains, flowing channels, or reflective pools. Modern interpretations of Islamic gardens can be found in various locations, such as the Islamic Gardens at King's Cross in London, which showcase contemporary landscaped spaces representing the diversity of Muslim culture. The concept of Islamic gardens spread widely from Persia to Spain, North Africa, and India, influencing garden design across various Islamic empires. While maintaining core principles, these gardens often incorporated local elements and adapted to regional climate. London has

444-507: A good social network feel socially included, promoting more confidence and well-being in their everyday lives. Overall, the bonding experiences that result from urban green spaces tie in with a child's cognitive and social development. A 2021 study found that higher exposure to woodland urban green spaces or urban forest but not grassland is associated with improved cognitive development and reduced risks of mental problems for urban adolescents . The term "rus in urbe" meaning "country in

518-597: A government-owned or state-owned enterprise . They are a common feature of modern business life, and most multinational corporations organize their operations in this way. Examples of holding companies are Berkshire Hathaway , Jefferies Financial Group , The Walt Disney Company , Warner Bros. Discovery , or Citigroup ; as well as more focused companies such as IBM , Xerox , and Microsoft . These, and others, organize their businesses into national and functional subsidiaries, often with multiple levels of subsidiaries. Subsidiaries are separate, distinct legal entities for

592-441: A high risk of prevalence rhinitis, allergic sensitization, wheezing, and asthma among children 7 years-old. More studies are needed to explain the effect of urban green spaces on children relating to air quality. These studies should take into consideration the interconnectedness of tree species, geographic areas, temperature, and other pollutant-like traffic. The adolescent years are extremely important for children due to it being

666-404: A joint arrangement (joint operation or joint venture) over which two or more parties have joint control (IFRS 11 para 4). Joint control is the contractually agreed sharing of control of an arrangement, which exists only when decisions about the relevant activities require the unanimous consent of the parties sharing control. The Companies Act 2006 contains two definitions: one of "subsidiary" and

740-432: A judgment against the parent if they can pierce the corporate veil and prove that the parent and subsidiary are mere alter egos of one another. Thus any copyrights, trademarks, and patents remain with the subsidiary until the parent shuts down the subsidiary. Ownership of a subsidiary is usually achieved by owning a majority of its shares . This gives the parent the necessary votes to elect their nominees as directors of

814-488: A long history of urban open space, which has significantly influenced development of modern parks, and is still among the greenest capital cities in the world. The basis for many urban open spaces seen today across Europe and the West began its process of development in London in the 17th and 18th centuries. What would eventually become urban open green space began as paved public plazas . Though they were intended to be open to

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888-461: A lower income, explained by the pattern that wealthier individuals reside in areas more concentrated with green space. Urban open spaces in higher socioeconomic neighborhoods were also more likely to have trees that provided shade, a water feature (e.g. pond, lake and creek), walking and cycling paths, lighting, signage regarding dog access and signage restricting other activities as well. This difference in access has been proven, however, further study

962-530: A neighborhood. Even when physical activity rates are not shown to increase with greater access to green space, greater access to green space has been shown to decrease stress and improve social cohesion. Adequate urban green space access can be associated with better respiratory health outcomes, as long as green space areas meet certain requirements.  A new study showed that mortality due to pneumonia and chronic lower respiratory diseases could be reduced by minimizing fragmentation of green spaces and increasing

1036-529: A protective factor against respiratory disease. Exposure to nature improves the immune system . Contact of the human body with soil , turf , or forest floor , exposes it to many microorganisms which boost the immune system. Improved access to green space is associated with reductions in cardiovascular disease symptoms, improved rates of physical activity , lower incidence of obesity , and improved respiratory health. Lower rates of cardiovascular biomarkers are associated with access to green space, showing

1110-539: A reduction in cardiovascular disease risk in populations living within 1 km of green space. Not only does access to urban green space reduce risk of cardiovascular disease, but increased access has been shown to improve recovery from major adverse cardiovascular events and lower all-cause mortality. Relationships have been found between increased access to green space, improved rates of physical activity, and reduced BMI. The percentage of sedentary and moderately active persons making use of an urban park increased when access to

1184-418: A reprieve from the urban environment and a break from over-stimulation . Studies done on physically active adults middle-aged and older show that there are amplified benefits when physical activities are coupled with green space environments. Such coupling leads to decreased levels of stress , lowers the risk for depression , and increases the frequency of participation in exercise. Green spaces may improve

1258-462: A subsidiary undertaking, if: The broader definition of "subsidiary undertaking" is applied to the accounting provisions of the Companies Act 2006, while the definition of "subsidiary" is used for general purposes. In Oceania , the accounting standards defined the circumstances in which one entity controls another. In doing so, they largely abandoned the legal control concepts in favour of

1332-999: A subsidiary/child company of the ultimate parent company, while a second-tier subsidiary is a subsidiary of a first-tier subsidiary: a "grandchild" of the main parent company. Consequently, a third-tier subsidiary is a subsidiary of a second-tier subsidiary—a "great-grandchild" of the main parent company. The ownership structure of the small British specialist company Ford Component Sales, which sells Ford components to specialist car manufacturers and OEM manufacturers, such as Morgan Motor Company and Caterham Cars , illustrates how multiple levels of subsidiaries are used in large corporations: The word "control" and its derivatives (subsidiary and parent) may have different meanings in different contexts. These concepts may have different meanings in various areas of law (e.g. corporate law , competition law , capital markets law ) or in accounting . For example, if Company A purchases shares in Company B, it

1406-528: A time of growth, development, and instillation of habits. When children are given the opportunity to be active, they typically take advantage of it. Children with a greater access to parks and recreational facilities through urban green space have been found to be more active than children who lack access. The access to green spaces has shown an association with recreational walking, increased physical activity, and reduced sedentary time in all ages. In coordination, it has been seen that higher residential green space

1480-1013: Is associated with lower BMI scores. If children are given the opportunity to be active and maintain a healthy BMI in their adolescent years, they are less likely to be obese as adults. Children exposed to urban green spaces have the opportunity to expend energy by interacting with their environment and other people through exercise. One study has shown that without access to urban green spaces, some children have problems with hyperactivity, peer interactions, and good conduct. The important interactions with nature, animals, and peers have been positively influential in child development and reduction in behavioral issues such as Attention Deficit Hyperactivity Disorder (ADHD). Urban green spaces allow children to expel their extra energy and improve their ability to focus when needed both at school and home. In addition to behavioral problems, and likely connected, access to urban green space has been proven to be helpful for cognitive development. With urban green space giving children

1554-528: Is higher in populations with a higher percentage of green space in their environments. Urban open space access has also been directly related to reductions in the prevalence and severity of chronic diseases resulting from sedentary lifestyles, to improvements in mental well-being, and to reductions in population-wide health impacts from climate change . Access to urban open space encourages physical activity and reduces ambient air pollution, heat, traffic noise and emissions . All are factors which contribute to

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1628-470: Is needed to evaluate the exact health impacts. A study conducted in Australia provided insight into how there is a correlation between community development/community safety and natural open space within the community. Open areas allow community members to engage in highly social activities and facilitate the expansion of social networks and friendship development. As people become more social they decrease

1702-492: Is not sufficient; the quality of the urban green space is important as well. Urban open space is often appreciated for the recreational opportunities it provides. Examples of recreation in urban open spaces include active recreation (such as organized sports and individual exercise) and passive recreation. Research shows that when open spaces are attractive and accessible, people are more likely to engage in physical activity. Time spent in an urban open space for recreation offers

1776-497: Is possible that the transaction is not subject to merger control (because Company A had been deemed to already control Company B before the share purchase, under competition law rules), but at the same time Company A may be required to start consolidating Company B into its financial statements under the relevant accounting rules (because it had been treated as a joint venture before the purchase for accounting purposes). Control can be direct (e.g., an ultimate parent company controls

1850-414: Is related to health inequality for minority populations.  Neighborhoods with higher percentages of minority residents often have lower access to open space and parks as the result of past red-lining policies and current inequities in funding priorities. Urban open space is under strong pressure. Due to increasing urbanization , combined with a spatial planning policy of densification , more people face

1924-1342: Is the name for a type of shandy , a concoction of equal parts of beer and lemonade. The river inspired the Hamburg-born composer Oscar Fetrás to compose the popular waltz "Mondnacht auf der Alster" (in English: "Moonlit Night on the Alster"). Hamburg's largest aquatic center, the Alster-Schwimmhalle , is named after the river. Franklin Koplitzsch and Daniel Tilgner, ed. (2005). "Hamburg-Lexikon". Hamburg Lexikon (in German) (3 ed.). Ellert&Richter. ISBN   3-8319-0179-1 . Urban open space In land-use planning , urban green spaces are open-space areas reserved for parks and other "green spaces", including plant life , water features – also referred to as blue spaces – and other kinds of natural environment. Most urban open spaces are green spaces, but occasionally include other kinds of open areas. The landscape of urban open spaces can range from playing fields , to highly maintained environments, to relatively natural landscapes . Generally considered open to

1998-470: The James Bond franchise. Conversely, the parent may be larger than some or all of its subsidiaries (if it has more than one), as the relationship is defined by control of ownership shares, not the number of employees. The parent and the subsidiary do not necessarily have to operate in the same locations or operate the same businesses. Not only is it possible that they could conceivably be competitors in

2072-606: The urban heat island effect. Historically, access to urban green space has favored wealthier and more privileged communities; thus, recent urban greening has increasingly focused on environmental justice concerns, and community engagement in the greening process. In particular, in cities with economic decline, such as the Rust Belt in the United States, urban greening has broad community revitalization impacts. Urban areas have greatly expanded, resulting in over half of

2146-462: The Alster is 56 km (35 mi) long and has an incline from 31 m to 4 m above sea level. Its drainage basin is about 587 km (227 sq mi). Left tributaries to the Alster are: Rönne, Alte Alster, Sielbek, Ammersbek, Drosselbek, Bredenbek , Rodenbek, Lohbek, Saselbek , Osterbek , and Wandse (Eilbek); right tributaries to the Alster are: Mühlenau (or Mühlenbach), Diekbek, Mellingbek, Susebek, Tarpenbek , and Isebek . The source of

2220-512: The Alster is a small bog pool in the Timhagen Brook near Henstedt-Ulzburg , approximately 25 km (16 mi) north of Hamburg . The small brook makes a couple of curves before entering Hamburg territory at Duvenstedt and Wohldorf-Ohlstedt . At that point, the Alster has passed a couple of smaller locks and has been passed by 15 bridges. From here on, Hamburgers use the river for water sports, especially for canoe and kayak trips on

2294-535: The Earth's atmosphere and trees play an essential role in removing human-made pollutants from the air, aka particulate matter (PM). Trees produce oxygen and absorb CO 2 . In urban green spaces, trees filter out man-made pollutants. Air quality data collected on cities with and without urban green space has shown that areas with an abundance of trees have considerably less air pollutants, i.e. O 3 , PM 10 , NO 2 , SO 2 , and CO. As air pollutants accumulate in

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2368-422: The air quality of urban areas and provide habitat for wildlife, improving the overall ecological health of urban environments. They may also reduce the risk of flooding by providing rainwater drainage . The aesthetic value of urban open spaces is self-evident. People enjoy viewing nature, especially when it is otherwise extensively deprived, as is the case in urban environments. Therefore, open space offers

2442-468: The atmosphere, vulnerable populations, such as children, may suffer from increased incidences of respiratory disease. Particulate matter or particle pollution with a diameter of 10 microns (PM10) or 2.5 microns (PM2.5) is associated with heart diseases and respiratory diseases including lung cancer. Globally, particulate matter has increased over 28% in indoor air and 35% in outdoor air. Children spend most of their time at school, around 10 hours daily, and

2516-399: The cities designed to try to solve the problem. The distance an individual lives from a green space or park and the proportion of land designated as open space/parks has been shown to be inversely related to anxiety/ mood disorder treatment counts in the community. Improved mental health may therefore be related to both measures - to distance from open space and proportion of open space within

2590-553: The city of Hamburg. Along the entire course within Hamburg, rowing or paddle boats are available for rent. In general, the Alster is assessed to be clean. Hamburg's Alster and its lakes and canals are famous for its white swans , cared for out of public funds since the 16th century. The Alster basin was an important model for the design of the Charles River basin, constructed in the early 20th century. Throughout much of Germany, an Alsterwasser (literally: "Alster's water")

2664-651: The city" was used in Rome around the first century C.E. Urban planning in Rome valued the natural landscape and took account for environmental factors. It was thought that by building a city with regard to the local countryside, the people living there would be healthier and happier. English landscapes would later take inspiration from Roman urban planning concepts in their own open spaces. Islamic gardens are distinctive green spaces that blend cultural, religious, and practical elements, serving as earthly representations of paradise. Typically featuring symmetrical designs, often in

2738-423: The company. Two or more subsidiaries that either belong to the same parent company or having a same management being substantially controlled by same entity/group are called sister companies . The subsidiary will be required to follow the laws where it is headquartered and incorporated. It will also maintain its own executive leadership. The subsidiary can be a company (usually with limited liability ) and may be

2812-422: The counterpart of development, urban open space is a natural and cultural resource, synonymous with neither 'unused land' nor 'park and recreation areas'." Another defines urban open space as "land and/or water area with its surface open to the sky, consciously acquired or publicly regulated to serve conservation and urban shaping function in addition to providing recreational opportunities." In almost all instances,

2886-431: The density of vegetation. Green spaces contribute to the reduction of local heat, decreasing the overall effect of UHIs. The larger the distribution of green spaces, the bigger the area of heat reduction. Green spaces that are clustered together will have an additive heat reduction resulting in a greater decrease in temperature in the local area compared to surrounding areas. Human activity has increased air pollution in

2960-443: The effect of surface urban heat islands. Open spaces that include any type of vegetation help offset the high temperatures through the natural process of evapotranspiration. Evapotranspiration releases water into the air therefore dissipating heat. There are many elements of an urban open space that can contribute to the mitigation of urban heat islands including the type of open space (park or nature reserve), type of plant species, and

3034-453: The first-tier subsidiary directly) or indirect (e.g., an ultimate parent company controls second and lower tiers of subsidiaries indirectly, through first-tier subsidiaries). Recital 31 of Directive 2013/34/EU stipulates that control should be based on holding a majority of voting rights, but control may also exist where there are agreements with fellow shareholders or members. In certain circumstances, control may be effectively exercised where

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3108-538: The health of individuals and communities near the green space. Urban greening policies are important for revitalizing communities , reducing financial burdens of healthcare and increasing quality of life. By promoting the development of parks, green roofs, and community gardens, these policies contribute to cleaner air, mitigate urban heat effects, and create spaces for recreation and social interaction. Most policies focus on community benefits, and reducing negative effects of urban development, such as surface runoff and

3182-421: The heart of the city. Binnenalster and the subsequent Kleine Alster form important urban spaces . The Alster's final section between Kleine Alster and its mouth at Binnenhafen, is called Alsterfleet , as part of a network of inner-city canals, including Bleichenfleet, Herrengrabenfleet, Mönkedammfleet, Neuerwallfleet and Nikolaifleet . Alsterfleet is regulated by two locks at Rathaus / Rathausmarkt and Baumwall,

3256-444: The increased temperatures. The average temperature during the day in cities can be 18-27 degrees Fahrenheit higher than in the surrounding rural regions. This is an example of one type of UHI, surface heat islands. Surface heat islands encompass the area from the ground to the top of the tree-line. It is usually higher during the day when direct sunlight reaches urban structures (often with darker materials than natural areas) including

3330-464: The indoor and outdoor air has a large impact on their health. Schools located in urban areas have higher particulate matter than schools in rural areas. Compared with children in schools located in rural areas, children who attend schools located in industrial areas and urban cities have higher levels of urinary PAHs ( polycyclic aromatic hydrocarbons ) metabolites, which is linked to air pollution. There are two different ways that green spaces can reduce

3404-522: The inner city's first lake − the Außenalster − the river is crossed by 42 bridges . For Hamburg's inner city, the river is a major geographical feature and greatly defines its cityscape . Through ponding of the river in the 13th century, two artificial lakes, the Außenalster (Outer Alster) and the smaller Binnenalster (Inner Alster) were created in central Hamburg. These two lakes and the surrounding parks serve as important recreational areas in

3478-669: The largest patch percentage of green space. Vegetation type (trees, shrubs and herbaceous layers) and lack of management (pruning, irrigation and fertilization) has been shown to affect a higher capacity to provide the ecosystem services of air purification and climate regulation within green urban spaces. The types of plants and shrubs are important because areas with large tree canopies can actually contribute to asthma and allergic sensitization. Urban areas tend to have higher temperatures than their surrounding undeveloped areas because of Urban Heat Islands , UHIs. Urban heat islands are areas with man-made infrastructure that contribute to

3552-433: The latter protecting it from the Elbe tide. Hamburg was founded at the mouth of the Alster river in the 9th century and used it as a port. The water was used to flood the moats of the fortifications. The Alster has been dammed since 1190, originally to power a watermill. In 1235 a further dam was built for a second mill, which changed the shape of the river to be like a lake. In the 15th and 16th century, an Alster canal

3626-461: The main contributor, pavement. The other type of UHI, atmospheric heat islands, are from above the tree-line to the level in the atmosphere where the urban area no longer has an effect. This type of heat island has increased heat at night due to the release of heat from infrastructure that built up throughout the day. Green spaces within urban areas can help reduce these increased temperatures through shading and evapotranspiration. Shading comes from

3700-584: The marketplace, but such arrangements happen frequently at the end of a hostile takeover or voluntary merger. Also, because a parent company and a subsidiary are separate entities, it is entirely possible for one of them to be involved in legal proceedings, bankruptcy, tax delinquency, indictment or under investigation while the other is not. In descriptions of larger corporate structures, the terms "first-tier subsidiary", "second-tier subsidiary", "third-tier subsidiary", etc. most are often used to describe multiple levels of subsidiaries. A first-tier subsidiary means

3774-575: The natural environment, too. For example, people who were shown pictures of scenic, natural environments had increased brain activity in the region associated with recalling happy memories, compared to people that were shown pictures of urban landscapes. The World Health Organization considers urban green spaces as important to human health. These areas have a positive impact on mental and physical health. Urban open spaces often include trees or other shrubbery that contribute to moderating temperatures and decreasing air pollution . Perceived general health

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3848-433: The opportunity to get outside and expend energy, children are more focused in school and have a better working memory and reduced inattentiveness. Another facet of urban green space improving mental health is giving children access to a community. Recreational activities and playing at the park gives children opportunities to interact with other children and develop a social circle and social skills in general. Children with

3922-482: The other "subsidiary undertaking". According to s.1159 of the Act, a company is a "subsidiary" of another company, its "holding company", if that other company: The second definition is broader. According to s.1162 of the Companies Act 2006, an undertaking is a parent undertaking in relation to another undertaking, a subsidiary undertaking, if: An undertaking is also a parent undertaking in relation to another undertaking,

3996-471: The parent holds a minority or none of the shares in the subsidiary. According to Article 22 of the directive 2013/34/EU an undertaking is a parent if it: Additionally, control may arise when: Under the international accounting standards adopted by the EU a company is deemed to control another company only if it has all the following: A subsidiary can have only one parent; otherwise, the subsidiary is, in fact,

4070-559: The park was improved. Mental illness has been a major taboo and concern in the current fast-paced world in which time to relax is undervalued.  Globally, mental illness is linked to eight million deaths each year. In urban areas , limited access to green space and poor quality of green spaces available may contribute to poor mental health outcomes; according to some studies, people living in cities and towns may have weaker mental health in comparison to people living in less crowded areas. Urban green spaces are pieces of nature in

4144-470: The perceptions of fear and mistrust allowing a sense of community bondage. Distant or lack of adequate green space, therefore, may contribute to higher rates of inactivity and greater health effects among minority populations. Subsidiary A subsidiary , subsidiary company or daughter company is a company owned or controlled by another company, which is called the parent company or holding company , which has legal and financial control over

4218-413: The pollution of particulate matter including preventing distribution of particulate from pollutants or by reducing the particulate matter from traveling to other places. There is a disagreement about the association of living near green spaces or having high exposure to greenness and illness such as allergies, rhinitis, and eye and nose symptoms. Higher exposure to tree canopy and pollen was associated with

4292-557: The prospect of living in less green residential environments, especially people from low economic strata. This may cause environmental inequality with regard to the distribution of (access) to public green space. The parks that do exist in minority neighborhoods are often small (with lower acreage per person than parks in majority ethnicity neighborhoods), not well maintained, unsafe, or are otherwise ill-suited for community needs. A large epidemiological study. concluded that wealthier individuals were generally healthier than individuals with

4366-407: The public, these spaces began to be re-designated as private parks around the late eighteenth century. It was during this period that the areas became pockets of green in the urban environment, commonly modelled after the natural wild of the countryside. The first parks to reverse the trend of privatization and again be opened to the public were England's royal parks in the nineteenth century. This

4440-495: The public, urban green spaces are sometimes privately owned, such as higher education campuses , neighborhood/community parks/gardens , and institutional or corporate grounds. Areas outside city boundaries, such as state and national parks as well as open space in the countryside, are not considered urban open space. Streets, piazzas , plazas and urban squares are not always defined as urban open space in land use planning. Urban green spaces have wide-reaching positive impacts on

4514-430: The purposes of taxation , regulation and liability . For this reason, they differ from divisions which are businesses fully integrated within the main company, and not legally or otherwise distinct from it. In other words, a subsidiary can sue and be sued separately from its parent and its obligations will not normally be the obligations of its parent. However, creditors of an insolvent subsidiary may be able to obtain

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4588-605: The risks of chronic disease and mental illness. Individuals and families who lived closer to ‘formal’ parks or open space were more likely to achieve the recommended amounts of physical activity. Better respiratory health is associated with cleaner air quality. Cleaner air quality affects rates of chronic disease in populations exposed. “High concentrations of ambient particles can trigger the onset of acute myocardial infarction and increase hospitalization for cardiovascular disease”. Besides an association with lower BMI/obesity rates, this physical activity can increase lung function and be

4662-489: The river navigable. Until the 19th century water transport with barges were used up to the town of Kayhude . The barges—transporting building material, fuel, and foods—were staked or hauled. The Alster is navigatable some 9 km upstream from the mouth. Alster Touristik GmbH (ATG), a subsidiary of the Hamburger Hochbahn , provides public and touristic transport on a fleet of Alster ferries in

4736-458: The river, or hikes along its shores. At Wellingsbüttel , the Alster runs past Wellingsbüttel Manor . At Ohlsdorf the Alster reaches a weir, approximately at the height of the former Fuhlsbüttel Lock, the last water level regulation before reaching the inner city. From Fuhlsbüttel downstream, the Alster's course, has been straightened on several locations, with old and new river beds occasionally forming parallel canal beds. Between city limits and

4810-515: The segmentation of the spaces, displays a situation similar to the privatization of London parks in the eighteenth century, which displayed a desire to make classes more distinct. In the 20th century, places like Scandinavia saw a proliferation of urban open spaces and began adopting a lifestyle supported by the extra urban breathing room. An example of this can be seen in Copenhagen where an area closed to car traffic in 1962 developed, in just

4884-775: The space referred to by the term is green space, focused on natural areas. The spaces that are part of "public space" are broadly construed, including meeting or gathering places that exist outside the home and workplace. These foster resident interaction and opportunities for contact and proximity. This definition implies a higher level of community interaction and places a focus on public involvement rather than public ownership or stewardship. The benefits that urban open space provides to citizens can be broken into four basic forms: recreation , ecology, aesthetic value, and positive health impacts. Psychological research shows that benefits gained by visitors to urban green spaces increased with their biodiversity, indicating that "green" alone

4958-460: The subsidiary, and so exercise control. This gives rise to the common presumption that 50% plus one share is enough to create a subsidiary. There are, however, other ways that control can come about, and the exact rules both as to what control is needed, and how it is achieved, can be complex (see below). A subsidiary may itself have subsidiaries, and these, in turn, may have subsidiaries of their own. A parent and all its subsidiaries together are called

5032-410: The taller plants, such as trees, planted in green spaces that can contribute to lowering the surface heat island effect. The shade provides protection from the sun for vulnerable populations, such as children, during periods of increased temperature, during the summer months or during a heat wave. Tree cover prevents some solar radiation from reaching the ground with its leaves and branches. This reduces

5106-462: The use of urban green rings. Segmentation of urban open spaces was particularly prominent in America during the twentieth century. Since the late 1800s romantic park systems, open space designers have been concerned with guiding, containing or separating urban growth, distributing recreation, and/or producing scenic amenity, mostly within the framework of geometric abstractions." Such segmentation

5180-513: The value of "substituting gray infrastructure." One researcher states how attractive neighborhoods contribute to positive attitudes and social norms that encourage walking and community values. Properties near urban open space tend to have a higher value. One study was able to demonstrate that, "a pleasant view can lead to a considerable increase in house price, particularly if the house overlooks water (8–10%) or open space (6–12%)." Certain benefits may be derived from exposure to virtual versions of

5254-434: The world's population being located in urban locations. As the population continues to grow, this number is predicted to be at two-thirds of people living in urban areas by 2050. The World Health Organization (WHO) defined urban green spaces as "all urban land covered by vegetation of any kind". When doing research, some experts use "urban open space" to describe a broader range of open areas. One definition holds that "As

5328-554: Was built to connect Hamburg with Lübeck . The canal was about 8 km (5.0 mi) long and built from the Alster to the Beste , a tributary of the Trave river, at Sülfeld . Because of the difficulties in holding water, especially near marsh areas, the 91 km (57 mi) long waterway from Hamburg to Lübeck was navigable from 1529 to 1550 only. Hamburg expanded along the shores of the Alster, and several locks were constructed to make

5402-511: Was done in response to the extensive and unexpected population movement from the country into cities. As a result, "the need for open space was socially and politically pressing… The problems, to which the provision of parks was expected to offer some relief, were easy to describe: overcrowding, poverty, squalor, ill-health, lack of morals and morale, and so on". China's Fourteenth Five-Year Plan's plan 's Climate Change Special Plan emphasizes ecologically-oriented urban planning , including through

5476-455: Was especially prominent in the 1990s, when urban open spaces took a path similar to that of parks, following the modernization trend of segmentation and specialization of areas. As modernity stressed "increased efficiency, quantifiability, predictability, and control… In concert with the additional social divisions", open spaces grew more specific in purpose. Perhaps this increase in division of social classes ' use of open space, demonstrated by

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