scholarly journals WAVE ATTENUATION AND SEDIMENT TRANSPORT MONITORING OF LIVING SHORELINES IN THE DELAWARE BAY, U.S.

2018 ◽  
pp. 53
Author(s):  
Katlin Walling ◽  
Douglas Gaffney ◽  
Moses Katkowski
Keyword(s):  
Wave Attenuation ◽  
Wave Climate ◽  
Tidal Range ◽  
Monitoring Equipment ◽  
Technical Data ◽  
Shoreline Stabilization ◽  
Living Shorelines ◽  
Analysis Techniques ◽  
Natural Approach ◽  
The Core

Living shorelines are considered a more natural approach to shoreline stabilization for low-energy coastlines in contrast to traditional “hard” shoreline armoring methods (i.e. bulkheads). Living shorelines often vary by design and materials, which are optimized for site-specific coastal and environmental conditions, such as wave climate, tidal range, sunlight exposure, etc.; however, the core benefits of all engineered living shorelines are typically the same: reduce shoreline erosion; enhance marine, intertidal, or backshore habitat; and increase resiliency to storm surge and/or sea level rise. While the general benefits of living shorelines are well known, project-specific technical data (i.e. percent of wave energy attenuation, shoreline advancement rates) documenting the effectiveness of living shorelines is more sparse. Moreover, monitoring equipment and analysis techniques required to capture the fine-detailed technical data can prove to be cost and/or labor intensive.

scholarly journals Sediment Exchange Between the Created Saltmarshes of Living Shorelines and Adjacent Submersed Aquatic Vegetation in the Chesapeake Bay

2021 ◽  
Vol 8 ◽  
Author(s):  
Iacopo Vona ◽  
Cindy M. Palinkas ◽  
William Nardin
Keyword(s):  
Chesapeake Bay ◽  
Extreme Events ◽  
Aquatic Vegetation ◽  
Natural Habitat ◽  
Wave Climate ◽  
Coastal Protection ◽  
Submersed Aquatic Vegetation ◽  
Shoreline Stabilization ◽  
Living Shorelines ◽  
Sediment Balance

Rising sea levels and the increased frequency of extreme events put coastal communities at serious risk. In response, shoreline armoring for stabilization has been widespread. However, this solution does not take the ecological aspects of the coasts into account. The “living shoreline” technique includes coastal ecology by incorporating natural habitat features, such as saltmarshes, into shoreline stabilization. However, the impacts of living shorelines on adjacent benthic communities, such as submersed aquatic vegetation (SAV), are not yet clear. In particular, while both marshes and SAV trap the sediment necessary for their resilience to environmental change, the synergies between the communities are not well-understood. To help quantify the ecological and protective (shoreline stabilization) aspects of living shorelines, we presented modeling results using the Delft3D-SWAN system on sediment transport between the created saltmarshes of the living shorelines and adjacent SAV in a subestuary of Chesapeake Bay. We used a double numerical approach to primarily validate deposition measurements made in the field and to further quantify the sediment balance between the two vegetation communities using an idealized model. This model used the same numerical domain with different wave heights, periods, and basin slopes and includes the presence of rip-rap, which is often used together with marsh plantings in living shorelines, to look at the influences of artificial structures on the sediment exchange between the plant communities. The results of this study indicated lower shear stress, lower erosion rates, and higher deposition rates within the SAV bed compared with the scenario with the marsh only, which helped stabilize bottom sediments by making the sediment balance positive in case of moderate wave climate (deposition within the two vegetations higher than the sediment loss). The presence of rip-rap resulted in a positive sediment balance, especially in the case of extreme events, where sediment balance was magnified. Overall, this study concluded that SAV helps stabilize bed level and shoreline, and rip-rap works better with extreme conditions, demonstrating how the right combination of natural and built solutions can work well in terms of ecology and coastal protection.

Considerations for Whole-Slide Analysis of Murine Xenografts Experiments

2021 ◽  
Vol 69 (10) ◽  
pp. 627-631
Author(s):  
Abigail R. Bland ◽  
John C. Ashton
Keyword(s):  
Cell Death ◽  
Image Analysis ◽  
Cell Counting ◽  
Analysis Techniques ◽  
The Core ◽  
Necrotic Region ◽  
Areas Of Interest ◽  
Image Analysis Techniques ◽  
Immunohistochemical Analyses ◽  
Animal Models Of Cancer

Histochemistry of tumor sections is a widely employed technique utilized to examine cell death in preclinical xenograft animal models of cancer. However, this is under the assumption that tumors are homogeneous, leading to practices such as automatic cell counting across the entire section. We have noted that in our experiments the core of the tumor is largely or partially necrotic, and lacks evidence of vascularization (in contrast to the outer areas of the tumor). We note that this can bias and confound immunohistochemical analyses that do not take care to sample areas of interest in a way to take this into account. Design-based stereology with image analysis techniques is an alternative process that could be used to measure the volume of the necrotic region compared to the volume of the whole tumor.

Wave Propagation and Power Flow Analysis of Sandwich Structures With Internal Absorbers

2014 ◽  
Vol 136 (4) ◽  
Author(s):  
J. S. Chen ◽  
R. T. Wang
Keyword(s):  
Wave Propagation ◽  
Power Flow ◽  
Wave Attenuation ◽  
Sandwich Structures ◽  
Flow Analysis ◽  
Flow Characteristics ◽  
Continuum Models ◽  
Sandwich Beams ◽  
The Core ◽  
In Series

This study examines wave attenuation and power flow characteristics of sandwich beams with internal absorbers. Two types of absorbing systems embedded in the core are considered, namely, a conventional spring-mass-dashpot system having a mass with a spring and a dashpot in parallel, and a relaxation system containing an additional relaxation spring added in series with the dashpot. Analytical continuum models used for interpreting the attenuation behavior of sandwich structures are presented. Through the analysis of the power flowing into the structure, the correlation of wave attenuation and energy blockage is revealed. The reduction in the power flow indicates that some amount of energy produced by the external force can be effectively obstructed by internal absorbers. The effects of parameters on peak attenuation, bandwidth, and power flow are also studied.

Instrumentation-Driven Model Detection and Actor Partitioning for Dataflow Graphs

2013 ◽  
Vol 4 (1) ◽  
pp. 1-21 ◽  
Author(s):  
Ilya Chukhman ◽  
Shuoxin Lin ◽  
William Plishker ◽  
Chung-Ching Shen ◽  
Shuvra S. Bhattacharyya
Keyword(s):  
Signal Processing ◽  
Legacy Systems ◽  
Dataflow Graphs ◽  
Analysis Techniques ◽  
Legacy Code ◽  
The Core ◽  
Systems On Chip ◽  
Dataflow Model ◽  
On Chip ◽  
Dataflow Models

Dataflow modeling offers a myriad of tools to improve optimization and analysis of signal processing applications, and is often used by designers to help design, implement, and maintain systems on chip for signal processing. However, maintaining and upgrading legacy systems that were not originally designed using dataflow methods can be challenging. Designers often convert legacy code to dataflow graphs by hand, a process that can be difficult and time consuming. In this paper, the authors developed a method to facilitate this conversion process by automatically detecting the dataflow models of the core functions from bodies of legacy code. They focus first on detecting static dataflow models, such as homogeneous and synchronous dataflow, and then present an extension that can also detect dynamic dataflow models. Building on the authors’ algorithms for dataflow model detection, they present an iterative actor partitioning process that can be used to partition complex actors into simpler sub-functions that are more prone to analysis techniques.

Wave attenuation experiments over living shorelines over time: a wave tank study to assess recreational boating pressures

2014 ◽  
Vol 19 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Jennifer E. Manis ◽  
Stephanie K. Garvis ◽  
Steven M. Jachec ◽  
Linda J. Walters
Keyword(s):  
Wave Attenuation ◽  
Recreational Boating ◽  
Wave Tank ◽  
Living Shorelines ◽  
Over Time

scholarly journals SASTRA CYBER ABAD KE-20: SEBUAH TINJAUAN TENTANG NILAI PENGUATAN KARAKTER ETIS LINGKUNGAN

2021 ◽  
Vol 1 (01) ◽  
pp. 1-10
Author(s):  
Onok Yayang Pamungkas
Keyword(s):  
Environmental Ethics ◽  
Standard Of Living ◽  
Literary Texts ◽  
The Novel ◽  
Technical Data ◽  
Balance Of Nature ◽  
Analysis Techniques ◽  
Research Findings ◽  
The Universe ◽  
Human Awareness

This research is an attempt to explain the form of environmental ethics and values ??of strengthening the Quadriology character of the Novel by Ki Padmasusastra (hereinafter referred to as QNKKP). This study uses a qualitative research paradigm. The object of this research is called cyber literature because the data is taken from online sites. The main data of the study include four novels by Ki Padmasusastra. Technical data analysis uses content analysis techniques that are based on cultural hermeneutics. The results showed that, QNKKP is a reflection of the universality of Javanese literature wrapped in the symbolism of literary texts. The picture of people's life is the goal of an ideal standard of living that is in accordance with the values ??that develop in Javanese culture. The main goal of environmental wisdom in the perspective of Javanese culture is to help hayuning bawana 'maintain the balance of nature', in order to create a harmonious life between creatures in the universe. An important implication of the research findings is that human awareness to respect each other's existing entities is the basis of strength that can guide human character to seek fellowship with nature.

scholarly journals The Impact of Reclamation on Tidal Flat Morphological Equilibrium

2021 ◽  
Vol 8 ◽  
Author(s):  
Zehua Zhong ◽  
Zhan Hu
Keyword(s):  
Tidal Flat ◽  
Dynamic Equilibrium ◽  
Anthropogenic Activities ◽  
Wave Climate ◽  
Tidal Flats ◽  
Sediment Supply ◽  
Tidal Range ◽  
The Mean ◽  
Comprehensive Framework ◽  
The Impact

Reclamation is one of the most prominent anthropogenic activities affecting tidal flat morphology and the related ecosystem service. Two representative types of reclamation are upper-flat enclosure and lower-flat enrockment. From a historical perspective, different type of reclamation was adapted in different areas in ancient China. As previous studies on reclamation are often site-specific, the reason that leads to such a difference is unclear. The intertidal dynamic equilibrium theory (DET) provides a comprehensive framework for this quest. Here, we extend the DET with additional effects of reclamation. A model based on DET (DET-ESTMORF) was applied to investigate the impact of reclamation on tidal flats. The model was validated by comparing our results against previous records and observations. Results show that both types of reclamation induce morphological adjustment by enhancing local accretion, which upset the previous equilibrium. Specifically, upper-flat enclosure drives tidal flats into evolution toward wave dominance, whereas lower-flat enrockment causes adjustment toward tidal dominance. Next, the impact of reclamation on tidal flats in different states (prograding or retreating) was investigated. We show that both enclosure and enrockment can induce accretion despite the varying wave climate and sediment supply, with the mean accretion rate raised by 1.8 cm/year and 1.2 cm/year, respectively. However, the resulting profiles are different in shape, especially on retreating flats. Finally, we point out that tidal range and sediment supply are the potential reasons affecting the choice of reclamation types in practices.

scholarly journals Shoreline Stabilization with Experimental Groin Field(s): Modular Adjustable Permeable Groins

2018 ◽  
Author(s):  
Nicholas De Gennaro ◽  
Frank Gable
Keyword(s):  
South Carolina ◽  
Retention Rate ◽  
Coastal Zone Management ◽  
Cost Benefit ◽  
Cost Effective ◽  
The United States ◽  
Wave Climate ◽  
Shoreline Stabilization ◽  
Zone Management ◽  
Engineered Structures

This manuscript introduces prospective hard engineering solutions to continuous episodic erosional events on beaches utilized for recreation and tourism. The basis of this paper is information from a modeling study completed in 2011 on a two mile stretch of beach in South Carolina. The study utilized three alternative groin systems and a no groin option. The optimum spacing of the groin applications and the retention rate of a replenished beach at the location was determined based on running a computer model (Genesis) for the environmental conditions (wave climate, littoral transport, etc.) at the demonstration site. It was also determined that the innovative groin alternative presented in this paper would likely develop as the most effective cost/benefit relationship among the more conventional alternatives utilized in the United States. The experimental groin system (modular adjustable permeable groin(s) MAPG) was calculated to save initial construction costs by 25% to 30%as compared to the other alternatives. This was significant when considering that adjacent beach impacts are minimized and the beach berm is better protected over the typical beach re-nourishment cycle. This paper attempts to facilitate further discussion of regional sediment budget and (coastal zone) management by bridging the divide between choosing only sand nourishment vs. engineered structures. We demonstrate that reintroducing engineered structures in combination with beach nourishment can be a cost effective solution to episodic erosional events over time while allowing longshore sediment transport.

scholarly journals Peniadaan Salat Jumat dalam Surat Edaran Gubernur Sulsel Nomor: 451.11/2057/2020 Selama Pandemi Covid-19 Perspektif Maqāṣid al-Syarīah

2020 ◽  
Vol 6 (2) ◽  
pp. 289-309
Author(s):  
Sirajuddin Sirajuddin ◽  
Kasjim Salenda ◽  
Abdul Wahid Haddade
Keyword(s):  
Content Analysis ◽  
Islamic Law ◽  
Qualitative Approach ◽  
Analysis Techniques ◽  
The Core ◽  
South Sulawesi ◽  
Library Research ◽  
The World ◽  
Circular Letter

This research aimed to analyze the relevance of dismissal of friday prayers in circular letter of south sulawesi governor number: 451.11 / 2057/2020 during covid-19 pandemic from the perspective of maqāṣid al-syarī’ah. This research is library research using a qualitative approach and content analysis techniques. The results of the research conclude that the substance of the circular letter is relevant to the principle of maqāṣid al-syarī’ah which is the core philosophy of the formation of Islamic law in presenting the benefit of mankind in the world and the hereafter, both from the aspect of maqāṣid al-kulliyyah (universal) and maqāṣid al-juz'iyyah (partial) especially maqāṣid in obeying a leader. Therefore, the emergence of the phenomenon of counter attitudes from some people and even preachers towards the policy should not occur.

scholarly journals NILAI-NILAI PENDIDIKAN ISLAM DALAM BUDAYA SADRANAN DI DESA NGIJO KECAMATAN GUNUNGPATI KOTA SEMARANG

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Nur Cholid ◽  
Rois Fauzi
Keyword(s):  
Human Life ◽  
Observation Data ◽  
Daily Lives ◽  
Analysis Techniques ◽  
The Core ◽  
Qualitative Descriptive ◽  
Meat Goat ◽  
Modern Era ◽  
Islamic Values ◽  
Wednesday Evening

Abstract Despite the development of increasingly modern era, traditional ceremonies which are a noble culture still play an important role in the society live. One of them is Nyadran culture, it has meaning for society since it contains Islamic moral values. This culture is an acculturation of Javanese-Hindu culture with Islam. Islamic education plays an important role in human life. We as Muslims should apply the Islamic values in our daily lives as a guide to reach happiness living in the world and the hereafter. Many teenagers in high school age are reluctant to carry out congregational prayers in mosques, they prefer hanging out and riding out their motorbikes, parents' advice is no longer ignored. This is a moral decline in society that appears today. This research is a qualitative-descriptive. The techniques of data collection were interviews, documentation and observation. Data analysis techniques were data reduction, data presentation, conclusion and verification. Meanwhile, to test the validity of the data, we used data triangulation and member checking techniques. The results of this study showed that the Nyadran culture is a process of sending prayers to ancestors who have passed away. This culture has been conducted by the society from generation to generation from their ancestors. The ceremony is held in Rajab, Thursday wage night Friday Kliwon. The first process that society do in this tradition is cleaning the grave, then praying together on Wednesday evening which starts at 24.00, followed by slaughtering goats on Thursday morning, after that the core of Nyadran process is praying together, recitation and distribution of food and meat goat Keywords: The Islamic Values of Sadranan Culture Abstrak Meskipun perkembangan zaman semakin modern, upacara tradisional yang merupakan budaya luhur masih memegang peranan penting bagi sebagian masyarakat dalam kehidupannya. Upacara tradisional yang memiliki makna serta nilai-nilai pendidikan Islam didalamnya salah satunya adalah budaya Nyadran. Budaya nyadran merupakan akulturasi budaya Jawa-Hindu dengan Islam. Pendidikan Islam sangat berperan penting dalam kehidupan manusia. Nilai-nilai ajaran Islam seharusnya kita terapkan dalam kehidupan sehari-hari sebagai pedoman untuk menuju kebahagiaan dunia dan akherat. Semakin merebaknya sistem perjudian di wilayah Ngijo, anak seusia SMP sampai SMA enggan untuk melaksanakan melaksanakan sholat berjamaah di masjid, mereka lebih suka untuk nongkrong dan motor-motoran, nasehat orang tua sudah tidak dihiraukan lagi. Inilah salah satu bentuk kemerosotan akhlak di masyarakat yang muncul saat ini. Penelitian ini merupakan penelitian kualitatif-deskritif. Teknik pengumpulan data yang digunakan adalah wawancara, dokumentasi dan observasi. Teknik analisis data yang digunakan reduksi data, penyajian data, kesimpulan dan verifikasi. Untuk menguji keabsahan data menggunakan teknik triangulasi data dan member check. Hasil penelitian menunjukan bahwa budaya nyadran adalah suatu proses mengirimkan doa kepada para leluhur yang sudah meninggal dunia yang sudah berlangsung secara turun temurun dari nenek moyang. Waktu pelaksanaannya pada bulan Rajab, hari kamis wage malam Jum’at kliwon. Proses tradisi nyadran yang diawali dengan besik kubur atau membersihkan pemakaman, kemudian berdoa bersama pada hari rabu malam yang dimulai pukul 24. 00, dilanjutkan dengan pemotongan kambing pada hari kamis pagi, setelah itu inti dari nyadran yaitu doa bersama, pengajian dan pembagian makanan dan daging kambing. Kata Kunci : Nilai-Nilai Pendidikan Islam, Budaya Sadranan

Sign in / Sign up

Export Citation Format

Share Document