bluuebunny/crossref_metadata_2025 huggingface dataset:
Geochemical characterization of groundwater and saltwater intrusion processes along the Luy River, Binh Thuan, Vietnam
Authors: PHAM Dieu Linh , Cong Thi Diep , Thibaut Robin , Paepen Marieke , Segers Tom , Dang Thi Huyen , Ho Huu Hieu , Nguyen Frederic , Hermans Thomas
Published: March 2021

KEYWORDS: Saltwater intrusion, Geochemistry, Groundwater extraction  

ABSTRACT: With an average annual rainfall of 800-1150 mm/year, the Binh Thuan province is one of the driest places in Vietnam. The quantity and quality of groundwater play a significant role in the agriculture, aquaculture development and daily life of the local communities. In 2012, the national center for water resources (Nawapi, 2012) delineated the seawater intrusion extent in Binh Thuan based on the total dissolved solids (TDS) content of water samples taken from shallow boreholes. The threshold of 3g/L and 1.5g/L were exceeded in the estuaries of the Luy, Long Song and Ca Ty rivers. In recent years, the prolonged droughts combined with the sea level rise and the over-extraction of groundwater during the dry season increased dramatically the seawater intrusion process especially in the estuaries of the province.

The geochemistry of groundwater in the Luy River catchment was studied to investigate the contamination of the aquifers and identify the processes taking place. From 1991 to 2015, 98 water samples had been taken from the wells in the area in both dry and rainy seasons. 71% of the water samples were fresh while 21% and 5% were lightly saline and moderately saline respectively. In summer 2020, 110 new water samples from both shallow and deep wells were collected in the Luy river catchment in wells from 3m to 40m. The TDS values are ranging from 105 to 23080 mg/L and can be classified into 4 groups: freshwater (48%), slightly saline (40%), moderately saline (8%) and very saline (4%). The samples show that the seawater intrusion expands not only horizontally at shallow depth along the river but also deeper down the aquifer in most of the study area, what is also confirmed by geophysical data. Freshwater samples were mostly collected at a depth lower than 10m. The chemical composition of water samples were analyzed showing evidence of seawater intrusion, but also the occurrence of freshening processes within the study area. Together with the presence of saltwater at larger depths, this points towards a situation more complex than previously thought. Saltwater intrusions are likely not only related to interaction with the river estuary, but also to the presence of fossil saltwater in the aquifer, and to groundwater pumping and irrigation practices.

REFERENCES

NAWAPI. 2012. Hydrogeological mapping at scale 1:50000 in Ninh Thuan and Binh Thuan provinces. In Vietnamese. 

 

*Corresponding Author. Email: Linh.PhamDieu@UGent.be
A Neural Network-Based Observation Operator for Coupled Ocean-Acoustic Variational Data Assimilation
Authors: Storto Andrea , De Magistris Giovanni , Falchetti Silvia , Oddo Paolo
Published: March 2021

Variational data assimilation requires implementing the tangent-linear and adjoint (TA/AD) version of any operator. This intrinsically hampers the use of complicated observations. Here, we assess a new data-driven approach to assimilate acoustic underwater propagation measurements (Transmission Loss, TL) into a regional ocean forecasting system. TL measurements depend on the underlying sound speed fields, mostly temperature, and their inversion would require heavy coding of the TA/AD of an acoustic underwater propagation model. In this study, the non-linear version of the acoustic model is applied to an ensemble of perturbed oceanic conditions. TL outputs are used to formulate both a statistical linear operator based on Canonical Correlation Analysis (CCA), and a neural network-based (NN) operator. For the latter, two linearization strategies are compared, the best performing one relying on reverse-mode automatic differentiation. The new observation operator is applied in data assimilation experiments over the Ligurian Sea (Mediterranean Sea), using the Observing System Simulation Experiments (OSSE) methodology to assess the impact of TL observations onto oceanic fields. TL observations are extracted from a nature run with perturbed surface boundary conditions and stochastic ocean physics. Sensitivity analysis and forecast experiments show not only the highest accuracy of the NN reconstruction of TL when compared to CCA, but also that its use in the assimilation of TL observations is able to significantly improve the upper ocean forecast skills. The use of the NN observation operator is computationally affordable, and its general formulation appears promising for the adjoint-free assimilation of any remote sensing observing network.
Vertical tectonic motions in the Lesser Antilles: linking short- and long-term observations
Authors: van Rijsingen Elenora , Calais Eric , Jolivet Romain , de Chabalier Jean-Bernard , Robertson Richard , Ryan Graham , Symithe Steeve
Published: March 2021

Horizontal GPS velocities show that the Lesser Antilles subduction zone is currently experiencing low interseismic coupling, meaning that little to no elastic strain is building up as the North- and South American plates subduct beneath the Caribbean plate. However, geological data on Quaternary coral terraces and active micro-atolls in the central part of the arc reveal slow subsidence over the past 125,000 to 100 years, likely tectonic in origin. It has been proposed that coupling along the subduction interface could be responsible for this geological subsidence. We use forward elastic models with a realistic slab geometry to show that a locked subduction interface would actually produce uplift of the island arc, which contradicts these geological observations. We also show that vertical GPS data in the Lesser Antilles indicates a subsidence of 1-2 mm/yr of the entire arc. This short-term subsidence is in agreement with the ~100-year trend of 1.1 mm/yr subsidence derived from coral micro-atolls in eastern Martinique. Since locking of the subduction interface is inconsistent with this observed subsidence of the arc, we explore other mechanisms that could this observation, such as postseismic effects of historical earthquakes, slab retreat, tectonic erosion, accretionary wedge collapse or extension in the overriding plate. 
A GIS Database of Submarine Glacial Landforms and Sediments on High-Arctic Continental Shelves
Authors: Streuff Katharina , Ó Cofaigh Colm
Published: March 2021

A new digital database compiling glacial landforms and sediments in the High Arctic was created in order to facilitate and underpin new research on palaeo-ice sheets and tidewater glacier dynamics. The database is in a geographic information system (GIS) format and will be available for web download when published. It documents evidence of previous glacial activity as visible on the contemporary seafloor of fjords and continental shelves around all of Svalbard, Greenland, and Alaska, and north of 66°30’ N in Russia, Norway, and Canada. Extensive literature research was conducted to create the database, compiling a large number of glacial landforms at a range of scales, sediment cores, and radiocarbon dates. Glacial landforms included in the database are cross-shelf troughs, trough-mouth fans, grounding-zone wedges, overridden moraines, glacial lineations, drumlins, crag-and-tails, medial moraines, terminal moraines, debris-flow lobes (including glacier-contact fans), recessional moraines, De Geer moraines, crevasse-fill ridges, eskers and submarine channels. Sediment core locations are attributed with a description of the sampled lithofacies and sediment accumulation rates where available. Radiocarbon dates were included when thought to be relevant for constraining the timing of large-scale palaeo-ice dynamics. Outlines of bathymetric datasets published before December 2020 were also mapped to give an overview of previously investigated research areas. The database will aid researchers in the reconstruction of ice dynamics during and since the Last Glacial Maximum and in the interpretation of High-Arctic glacial landform-sediment assemblages. Moreover, apart from providing a comprehensive bibliography on Arctic glacial geomorphological and sedimentological research, it is intended to serve as a basis for future ice sheet modelling of High-Arctic glacier dynamics.
Critical infrastructures in a multi-hazard environment: identifying globally consistent heuristics to model interdependencies
Authors: Mühlhofer Evelyn , Bresch David N. , Koks Elco
Published: March 2021

Critical infrastructures (CIs) such as powerlines, road & rail transport, and telecommunications are networked systems, through which disruptions, for instance from natural hazards, may propagate far beyond their initial incidence.

There is, however, a gap when it comes to identifying how CIs interdepend on each other (such as water for cooling power generators, and electricity for powering water pumps), and how their joint system-of-systems (SOS) character can amplify possible consequences. Anecdotal evidence on such behaviour is frequently derived from artificially generated or locally constrained cases with few CIs under consideration. A full picture of CISOS risks throughout greater geographies is absent.

This research project aims to contribute to a more consistent view on natural hazard risks from CI interdependencies by

systematically identifying and deriving interdependency heuristics between a range of CIs,

transferring those interdependency heuristics to a network model based on real-world, spatially explicit open-source CI data,

combining this CISOS network layer with an open-source global risk modelling platform, CLIMADA (Aznar-Siguan, G. & Bresch, D. N. 2019), to allow for globally consistent impact calculations from a range of natural hazard scenarios.

I will give first insights on the trade-offs between identified CI interdependencies, real-world data constraints and generalisability of a CISOS modelling approach across national scales. I will also present opportunities from combining the networked layer with the risk modelling platform CLIMADA for studying CISOS disruptions in a multi-hazard space, and possible extensions to social impacts and basic service disruptions.
Seismic inversions of large, rapid landslides: what they can and cannot tell us about event dynamics
Authors: Allstadt Kate , Mitchell Andrew , Toney Liam , George David , McDougall Scott
Published: March 2021

Researchers are increasingly incorporating force histories derived from long-period seismic waves into multidisciplinary studies of large, rapid landslides. The force history can provide important information about what happened during failure — information that complements data available from field investigations and remote sensing analyses. It can also provide additional constraints on the dynamics of landslide motion than can be used to validate and/or calibrate numerical landslide models. However, the inversions need to be of high quality and must be interpreted properly. Because this technique is relatively new, we are still discovering how to best conduct inversions to obtain robust results and how to appropriately interpret these results. In this study, we run numerical models of landslides with idealized source and path geometries using two different modeling packages, DAN3D and D-Claw, and we use the model outputs to generate synthetic long-period seismic data. Both models use depth-averaged flow equations over 3D topography, with DAN3D using semi-empirical material rheologies and D-Claw using a two-phase granular and fluid flow approach. To examine the influence of station azimuthal coverage and distance, we synthesize seismic data for a wide range of possible station configurations. We then use these synthetic seismic data to conduct seismic inversions using the recently released open-source Python-based software package, lsforce (https://code.usgs.gov/ghsc/lhp/lsforce). In doing these inversions, we add differing levels and types of noise, vary the inversion options (e.g., frequency range, regularization techniques) and then compare the results to the “known” dynamics of the modeled idealized landslides. We aim to understand common artefacts, limitations, and other potential pitfalls in interpretation, to guide the inversion process in future studies. We repeat this process for idealized landslides of increasing complexity, including multi-part failures, sinuous paths, and gradual versus sudden initiations, to simulate how these characteristics are reflected in the force history and to better understand what level of detail can be constrained from the seismic inversion. This work will help guide researchers to obtain more reliable information about landslide dynamics from seismic inversions in future landslide studies.
What led to episodic subduction during the Archean?
Authors: Gunawardana Prasanna , Morra Gabriele , Chowdhury Priyadarshi , Cawood Peter
Published: March 2021

The tectonic regime of the early Earth is crucial to understand how interior and exterior elements of the Earth interacted to make our planet habitable (Cawood et al., 2018). Our understanding of the processes involved is far from complete, particularly about how the switch between non-plate tectonic and plate tectonic regimes may have happened during the Archean. In this study, we investigate how Archean subduction events (albeit isolated and intermittent) may have evolved within/from a stagnant-lid regime. We perform 2D numerical modelling of mantle convection (using Underworld2) under a range of conditions appropriate for the early-to-mid Archean Earth including hotter mantle potential temperature and internal heat production. Using the models, we evaluate how the mantle temperature and viscosity, buoyancy force, surface heat flow and surface velocity may have evolved over a duration of ~800-1000 million years.

Our models indicate that lithospheric drips are an efficient way of releasing a large amount of heat from the Earth’s surface over a short period of time. Repeated occurrences of dripping events result in average mantle temperature gradually decreasing. Concomitant with this thermal evolution, the drip dimensions grew to form large, symmetrical drips as well as occasional, asymmetric subduction type events. The subduction events lead to large-scale resurfacing of the lithosphere. We surmise that the decreasing of average mantle temperature: (1) increases the temperature dependent viscosity of the mantle, and 2) decreases the buoyancy forces of mantle convection. Both these factors lower the convective vigour and increases the lithospheric (the upper thermal boundary layer) thickness via decreasing the effective Rayleigh number. These changes in the lithosphere-asthenosphere system facilitate the transition from a dripping dominated regime to a mix of large-dripping and intermittent subduction regime over a period of ~1 billon years. This change in tectonic setting is predicted to alter surface velocity patterns, surface heat flux and production rate of felsic magmas, which allows the modelling results can be tested against the rock record.

Reference

Cawood, P. A., Hawkesworth, C. J., Pisarevsky, S. A., Dhuime, B., Capitanio, F. A., and Nebel, O., 2018, Geological archive of the onset of plate tectonics: Philosophical transactions. Series A, Mathematical, physical, and engineering sciences, v. 376, no. 2132.
The tipping times in an Arctic sea ice system under influence of extreme events
Authors: Yang Fang , Zheng Yayun , Duan Jinqiao , Fu Ling , Wiggins Stephen
Published: March 2021

In light of the rapid recent retreat of Arctic sea ice, the extreme weather events triggering the variability in Arctic ice cover has drawn increasing attention. A non-Gaussian α-stable Lévy process is thought to be an appropriate model to describe such extreme events. The maximal likely trajectory, based on the nonlocal Fokker–Planck equation, is applied to a nonautonomous Arctic sea ice system under α-stable Lévy noise. Two types of tipping times, the early-warning tipping time and the disaster-happening tipping time, are used to predict the critical time for the maximal likely transition from a perennially ice-covered state to a seasonally ice-free one and from a seasonally ice-free state to a perennially ice-free one, respectively. We find that the increased intensity of extreme events results in shorter warning time for sea ice melting and that an enhanced greenhouse effect will intensify this influence, making the arrival of warning time significantly earlier. Meanwhile, for the enhanced greenhouse effect, we discover that increased intensity and frequency of extreme events will advance the disaster-happening tipping time, in which an ice-free state is maintained throughout the year in the Arctic Ocean. Finally, we identify values of the Lévy index α and the noise intensity ε in the αε-space that can trigger a transition between the Arctic sea ice state. These results provide an effective theoretical framework for studying Arctic sea ice variations under the influence of extreme events.
Regional analysis of multivariate compound flooding potential:
sensitivity analysis and spatial patterns
Authors: Camus Paula , Haigh Ivan D. , Nasr Ahmed , Wahl Thomas , Darby Stephen E. , Nicholls Robert J.
Published: March 2021

Abstract. In coastal regions, floods can arise through a combination of multiple drivers, including direct surface run- off, river discharge, storm surge and waves. In this study, we analyse compound flood potential in Europe caused by these four main flooding sources using state-of-the-art databases with homogenous forcing (i.e., ERA5). First, we perform an analysis to assess the sensitivity of the compound flooding potential to several factors: 1) sampling method; 2) time window to select the concurrent event of the conditioned driver; 3) dependence metrics; 4) wave-driven sea level definition. We observe higher correlation coefficients using annual maxima than peaks over threshold. Regarding the other factors, our results show similar spatial distributions of the compound flooding potential. Second, the dependence between the pairs of drivers using the Kendall's rank correlation coefficient and the joint occurrence are synthesized for coherent patterns of compound flooding potential using a clustering technique. This quantitative multi-driver assessment not only distinguishes where overall compound flooding potential is the highest, but also discriminates which driver combinations are more likely to contribute to compound flooding. We identify hotspots of compound flooding potential located along the southern coast of the North Atlantic Ocean and the northern coast of the Mediterranean Sea.
Analisis Usahatani Sayuran Hidroponik di PT. Kusuma Agrowisata
Authors: Ekaria Ekaria
Published: March 2021

Penelitian ini bertujuan untuk mengetahui metode hidroponik yang dikembangkan di PT. Kusuma Agrowisata dan  menganalisis usahatani sayuran hidroponik di PT. Kusuma Agrowisata. Metode  analisis yang digunakan adalah analisis usahatani. Penelitian ini merupakan penelitian survei dengan pendekatan kualitatif deskriptif. Hasil penelitian menunjukkan bahwa usahatani sayuran hidroponik di PT. Kusuma Agrowisata menggunakan metode rakit apung (Floating Hydroponic Method) yang meliputi penggunaan media tanam, instalasi penanaman, nutrisi dan oksigen. Rata-rata produksi sayuran hidroponik di PT Kusuma Agrowisata yaitu 244,1 kg/musim tanam. Usahatani sayuran hidroponik di PT. Kusuma Agrowisata sangat menguntukan dan efisien. Teknologi yang digunakan cocok dengan budidaya sayuran untuk daerah perkotaan yang memiliki keterbatasan lahan.
Analisis Kinerja Keuangan Perusahaan Kelapa Sawit yang Go Public di Bursa Efek Indonesia (BEI) Tahun 2013-2017
Authors: Riyanto Muhammad , Kamisi Haryati La , Muhammad Munawir , Ekaria Ekaria
Published: March 2021

Penelitian ini bertujuan untuk menganalisis kinerja keuangan perusahaan perkebunan kelapa sawit yang go public di Bursa Efek Indonesia, selama 2013-2017 dan menganalisis kinerja keuangan pada harga saham. Penelitian ini dilaksanakan di Galeri Investasi Syariah Universitas Muhammadiyah Maluku Utara. Metode Analisis menggunakan rasio likuiditas, rasio leverage, rasio profitabilitas, rasio aktivitas, Q Tobin’s dan Regresi Berganda. Hasil penelitian menunjukkan: (1) Likuiditas (AALI, BWPT, DNSG, GOZCO, JAWA, SIMP & SMAR) memiliki rasio cepat <1, kecuali LSIP. (2) Leverage (BWPT, DNSG, GOZCO, JAWA memiliki LTDtER > 1 dan AALI, LSIP, SIMP, SMAR memiliki LTDtER <1. 3) Aktivitas (AALI, BWPT, DNSG, GOZCO, JAWA, LSIP, SIMP) memiliki TATO < 1.1 dan SMAR memiliki TATO> 1.1). (4) Profitabilitas (AALI, BWPT, DNSG, GOZCO, JAWA, LSIP, SIMP & SMAR memiliki ROI <0,3. (5) Nilai Perusahaan (SIMP, SMAR, GOZCO, JAWA memiliki Q <1 dan AALI, BWPT, DNSG, LSIP memiliki Q> 1. Kinerja keuangan dari harga saham yang diprediksi oleh quick ratio, LTDtER, TATO, ROI, dan Tobins'Q menunjukkan bahwa ia memiliki pengaruh signifikan terhadap harga saham dengan tingkat signifikansi 0,000 <0,05 .
Pengaruh Konsentrasi Larutan Garam Terhadap Karakteristik Sensori Produk Ikan Layang Asin Asap
Authors: Bahmid Jaitun , Lekahena Vanessa Natalie Jane , Titaheluw Syahnul Sardi
Published: March 2021

Pengasapan ikan merupakan metode pengawetan ikan melalui penambahan senyawa kimia asap dan panas, sedangkan penggaraman ikan adalah pengawetan ikan dengan menambahkan garam pada jumlah tertentu dan dikeringkan. Kedua metode pengolahan ini bertujuan untuk mengurangi kadar air pada ikan sehingga menghambat pertumbuhan mikroba. Kombinasi perlakuan pengaraman dan pengasapan akan menghasilkan produk ikan dengan daya awet yang lama, rasa dan aroma yang khas serta dapat langsung di konsumsi, perlakuan kombinasi ini jika diaplikasikan pada ikan layang akan menghasilkan produk ikan layang asin asap. Tujuan penelitian ini adalah untuk mengetahui pengaruh konsentrasi larutan garam terhadap nilai evaluasi sensori ikan layang asin asap. Manfaat penelitian ini diharapkan sebagai bahan masukan bagi pengembangan industri rumah tangga dan petani pengolahan hasil perikanan di Maluku Utara, khususnya pengolahan ikan layang asin asap. Hasil penelitian ini menunjukkan bahwa konsentrasi larutan garam yang berbeda berpengaruh terhadap karakteristik sensori ikan layang asin asap pada nilai kenampakan, rasa dan konsistensi, tetapi tidak pada nilai aroma, jamur dan lendir. Berdasarkan karakteristik sensori terhadap ikan layang asin asap menunjukkan bahwa produk dengan perlakuan perendaman pada larutan garam 20% (LA4) adalah yang paling disukai dibandingkan produk lainnya baik dari nilai kenampakan, rasa dan konsistensi.
Faktor-Faktor yang Berhubungan dengan Kekurangan Energi Kronis (KEK) pada Ibu Hamil di Wilayah Kerja Puskesmas Tosa Kota Tidore Kepulauan Tahun 2018
Authors: Latif Umar , Rahayu Agustin , Mansyur Suryani
Published: March 2021

Kekurangan energi kronis (KEK) merupakan kondisi yang disebabkan karena adanya ketidakseimbangan asupan gizi antara energi  dan protein, sehingga zat gizi yang dibutuhkan tubuh tidak tercukupi. Ibu hamil yang menderita Kekurangan Energi Kronis (KEK) mempunyai resiko kematian ibu mendadak pada masa perinatal atau resiko melahirkan bayi dengan berat bayi lahir rendah. Dari data yang diperoleh dari Dinas Kesehatan Kota Tidore Kepulauan Prevalensi KEK tertinggi berada di Puskesmas Tosa  dari tahun 2015-2017 yaitu sebanyak 68 Kasus (44%) sedangkan yang terendah prevalensi KEK berada di Puskesmas Soasio yaitu sebanyak 22 kasus dari tahun 2015-2017.  Penelitian ini bertujuan untuk mengetahui faktor-faktor yang berhubungan dengan kekurangan energi kronis (KEK) pada ibu hamil di Wilayah Kerja Puskesmas Tosa Kota Tidore Kepulauan Tahun 2018. Jenis penelitian yang digunakan adalah kuantitaf melalui pendekatan observasional  dengan rancangan Cross Sectional Study dan menggunakanTotal sampling dengan jumlah 54 sampel. Pengumpulan data dilakukan dengan cara pengisian kuesioner secara langsung, pengukuran lingkar lengan (LILA) dan recall 2x24  jam kepada responden, sedangkan penyajian data dalam bentuk tabel distribusi frekuensi, selanjutnya untuk mengetahui faktor-faktor yang berhubungan dengan kekurangan energi kronis (KEK) dilakukan dengan uji Chi Square. Hasil penelitian menunjukkan bahwa asupan energi dan pendapatan keluarga berpengaruh signifikan dengan KEK pada ibu hamil dengan nilai P yaitu p=0,01 dan p=0,00 kurang dari 0,05  sedangkan asupan protein (p=0,29), lemak (p=0,05), pengetahuan (p=0,32), usia ibu hamil (p=1,00), dan jarak kelahiran (p=0,63)  tidak berhubungan dengan KEK pada ibu hamil.
Pengaruh Dosis Pupuk Kandang dan Pupuk Urea Terhadap Pertumbuhan Dan Produksi Tanaman Buncis (Phaseolus vulgaris L) di Desa Batuboy Kecamatan Namlea Kabupaten Buru
Authors: Assagaf Said AR.
Published: March 2021

Penelitian ini bertujuan untuk mengetahui Dosis mana yang terbaik dari pemberian Pupuk Kandang dan Urea terhadap hasil Tumbuh Tanaman Buncis (Phaseolus Vulgaris L). Rancangan yang digunakan dalam penelitian ini adalah Rancangan Acak Kelompok (RAK) dengan pola faktorial  yang terdiri dari dua faktor, yaitu Pupuk Kandang (K) terdiri dari : K0 = Kontrol (tanpa perlakuan), K1 = 10 ton/Ha setara dengan 3 kg/bedeng, K2 = 20 ton/Ha setara dengan 6 kg/bedeng dan Pupuk Urea (U) terdiri dari : U0 = Kontrol (tanpan perlakuan), U1 = 200 kg/Ha setara dengan 0,06 g/bedeng , U2 = 400 kg/Ha setara dengan 0,12 g/bedeng dengan ulangi sebanyak 3 kali, sehingga terdapat 27 unit percobaan. Setiap percobaan ditentukan 10 tanaman sampel yang diambil secara acak. Hasil penelitian di dapat bahwa pemberian pupuk kandang sapi (organik) 10 ton/Ha setara dengan 3 kg/bedeng dan 20 ton/Ha setara dengan 6 kg/bedeng memberikan pengaruh nyata terhadap pertumbuhan dan hasil tanaman buncis, pupuk Urea (anorganik) 200 kg/Ha setara dengan 0,06 kg/bedeng dan 400 kg/Ha setara dengan 0,12 kg/bedeng memberikan pengaruh nyata terhadap pertumbuhan dan hasil tanaman buncis dan interaksi antara  pemberian pupuk kandang sapi (organik) 10 ton/Ha setara dengan 3 kg/bedeng dan pupuk Urea (anorganik) 200 kg/Ha setara dengan 0,06 kg/bedeng memberikan pengaruh yang sangat nyata terhadap pertumbuhan dan hasil tanaman buncis.
Analisis Representasi Graf Berarah dalam Matriks
Authors: Laisouw Ruslan , Burhanudin Hasanaidi
Published: March 2021

Pada paper ini direpresentasikan graf berarah dalam matriks serta lintasan terpendek pada jaringan lalu lintas Jembatan VI Kalumata–Tanah Tinggi Kota Ternate Selatan, dengan menggunakan algoritma lintasan terpendek dijkstra. Hasil yang diperoleh berupa matriks ketetanggaan M dengan elemen baris (v1, v2, v3 ...v11) dan elemen kolom( v1, v2, v3 ...v13) dimana elemen  pertama (v1, v2) = 0,5 dan elemen akhir (v11, v13) = 0. Graf berarahnya adalah graf G dengan 13 titik/verteks (v1, v2, v3,  ..., v13) dan memuat min 12 sisi /edge yang menghubungkan 13 verteks, lintasan terpendek direpresentasikan pada vertex (v1, v2, v3,  v4,  v7, v8, v11, v12) dengan panjang lintasan adalah 3,61.
Analisis Persepsi Kegunaan, Kemudahan dan Kerumitan Terhadap Data Pemicu di Approweb Pada Kantor Pelayanan Pajak Pratama
Authors: Lawata Recky Suhartanto , Nasaruddin Fadliah , Sari Ratna
Published: March 2021

Penelitian bertujuan untuk menganalisis pengaruh persepsi kegunaan, kemudahan dan kerumitan Technology Acceptance Model (TAM) terhadap data pemicu di approweb, pada Kantor Pelayanan Pajak Pratama Makassar Barat. Penelitian ini menggunakan data primer melalui survei kepada 36 orang responden dari account representative di Kantor Pelayanan Pajak Pratama Makassar Barat. Teknik pengumpulan data melalui kuesioner data dianalisis dengan menggunakan aplikasi SPSS. Pengujian hipotesis menggunakan analisis regresi berganda. Hasil penelitian ini menunjukkan bahwa kebermanfaatan berpengaruh positif dan signifikan sedangkan kemudahan berpengaruh positif tidak signifikan dan kerumitan berpengaruh negatif signifikan terhadap data pemicu di aplikasi approweb. Hasil penelitian ini membuktikan teori TAM dari persepsi kebermanfaatan data pemicu di aplikasi approweb bermanfaat bagi account representative.

The study aims to analyze the effect of perceived usefulness, ease and complexity of the Technology Acceptance Model (TAM) on trigger data in the Approweb, at the West Makassar Pratama Tax Office. This study uses primary data through a survey of 36 respondents from account representatives at the West Makassar Pratama Tax Office. Data collection techniques through data questionnaires were analyzed using the SPSS application. Hypothesis testing uses multiple regression analysis. The results of this study indicate that usefulness has a positive and significant effect while ease of positive effect is not significant and complexity has a significant negative effect on trigger data in approweb applications. The results of this study prove the TAM theory from the perceived usefulness of trigger data in the approweb application is beneficial for account representatives.
Pengaruh Hypnobirthing Terhadap Penanggulangan Nyeri Pada Masa Persalinan Di UPT Puskesmas Sukamaju Kab. Luwu Utara Tahun 2020
Authors: Akhiri saleh Muji rahayu , Gobel Fatmah Afrianty , Kurnaesih Een
Published: March 2021

ABSTRAK
Pembahasan: Nyeri yang timbul pada saat persalinan normal ibu primigravida mendorong menggunakan obat penawar nyeri seperti analgetik dan sedative. Salah satu metode nonfarmakologi untuk mengurangi intensitas nyeri pada masa persalinan adalah metode Hypnobirthing. Penelitian ini dilakukan dengan tujuan untuk menganalisis pengaruh Hypnobirthing terhadap penanggulangan Nyeri pada masa persalinan ibu Primigravida di UPT Puskesmas Sukamaju. Metode: Jenis penelitian ini adalah penelitian kuantitatif eksprimental dengan metode Quasi Eksperimen, yaitu rancangan eksperimen dengan metode observasi (Pengukuran intensitas nyeri) sebelum dan setelah perlakukan hypnobirthing dan kelompok kontrol. Pengambilan sampel dilakukan dengan metode accidental sampling jumlah sampel kelompok intervensi (hypnobirthing) sebanyak 12 responden dan kelompok kontrol sebanyak 9 responden. Metode analisis data menggunakan analsis Univariat dan Bivariat dengan Uji T-Test.  Hasil: Hasil penelitian didapatkan rata-rata intesitas nyeri pada ibu bersalin setelah diberikan hypnobirthing mengalami penurunan sedangkan kelas kontrol mengalami peningkatan. Diskusi: Hasil uji statistik diperoleh ρ value sebesar 0,000 pada tingkat kesalahan  sebesar (α) 5% atau 0,05 (kepercayaan 95%) sehingga nilai ρ < α. Data tersebut menunjukkan bahwa ada pengaruh yang signifikan perlakuan hypnobirthing terhadap penanggulangan rasa nyeri pada masa persalinan. Kesimpulan: ada pengaruh Hypnobirthing terhadap penanggulangan nyeri pada persalinan di UPT Puskesmas Sukamaju Kab. Luwu  Utara.
Prostitusi Pada Mahasiswi Melalui Layanan Media Online Di Kota Makassar Tahun 2020
Authors: Wahab Zettil Akmi , Kurnaesih Een , Multazam Andi
Published: March 2021

Latar belakang: Masalah prostitusi adalah masalah yang rumit, banyak hal yang berhubungan disana oleh karena itu masalah ini sangat perlu perhatian khusus oleh masyarakat. Beriringan dengan kemajuan teknologi saat ini, muncullah pergeseran fenomena prostitusi yang umumnya terjadi di masyarakat. Prosristusi yang bermula dari sebuah tempat lokalisasi saja, kini berubah menjadi prostitusi online yang dianggap mudah di jangkau oleh berbagai kalangan masyarakat melaui akses internet berupa sosial media. Prostitusi online   dalam   praktik   pada umumnya, menggunakan modus yang sama dengan   kejahatan   prostitusi lainnya, yakni dengan memanfaatkan media sosial di internet baik dengan menggunakan website maupun jejaring sosial seperti Facebook, Twitter, mechat, dan lain sebagainya. Mahasiswi sendiri menjadi salah satu pengguna media sosial untuk menawarkan jasa prostitusi dan mahasisiwi dalam hal ini menjadi pilihan favorit oleh kebanyakan pelanggan   karena   dinilai   masih muda dan cantik dengan tarif kencan yang beragam pula.  Tujuan penelitian ini dilakukan untuk menganalisa kejadian prostitusi online pada kalangan mahasiswi di Kota Makassar. Metode: Jenis penelitian adalah penelitian kualitatif dengan pendekatan fenomologi, untuk mengeksplorasi mengenai fenomena prostitusi pada kelompok mahasiswi dengan menggunakan layanan media online di Kota Makassar melalui observasi indepeth dan interview selama penelitian berlangsung. Hasil: Hasil penelitian ini bahwa banyak faktor yang mempengaruhi seseorang menjadi pekerja seks komersial tetapi faktor yang paling memicu dan berpengaruh adalah faktor desakan perekonomian dan dampak dari prostitusi yakni mahasiswi mengalami kurang konsentrasi dalam belajar sehingga nilai akademik menurun. Kesimpulan: Faktor pemicu seorang mahasiswi menjadi pekerja seks komersial online di Kota Makassar adalah faktor ekonomi yang sangat berpengaruh, karena himpitan ekonomi keluarga dan desakan kebutuhan hidup yang tinggi.
Pengaruh Kepemimpinan, Organisasi, Tim Peningkatan Mutu Dan Efikasi Diri Terhadap Penilaian Status Akreditasi Puskesmas Di Kota Makassar Tahun 2016-2019
Authors: Andri Anwar  , Nurmiati Muchlis  , Ahri Reza Aril
Published: March 2021

Latar Belakang: Akreditasi Puskesmas merupakan salah satu penilaian atau evaluasi mutu yang dilakukan oleh badan akreditasi untuk pembinaan peningkatan mutu dan kinerja melalui perbaikan yang berkesinambungan terhadap sistem manajemen mutu dan sistem penyelenggaraan kesehatan masyarakat dan pelayanan klinis, serta penerapan manajemen risiko. Ada beberapa faktor yang terlibat dalam pelayanan kesehatan di Puskesmas diantaranya faktor kepemimpinan, organisasi, tim peningkatan mutu, serta self-efficacy. Penelitian ini bertujuan untuk untuk mengetahui pengaruh kepemimpinan, organisasi, dan tim peningkatan mutu dengan self efficacy antara Puskesmas yang terakreditasi Dasar-Madya dengan Puskesmas  yang terakreditasi Utama – Paripurna tahun 2016-2019. Metode: Penelitian ini menggunakan pendekatan kuantitatif dengan rancangan observasional dengan desain cross-sectional study dengan teknik pengambilan sampel berdasarkan kuesioner dan wawancara. Teknik pengambilan sampel menggunakan Exhaustive sampling dengan mengambil semua anggota populasi sebagai sampel. Sampel dalam penelitian ini adalah 46 Puskesmas dengan total responden masing-masing 7 orang per puskesmas sehingga total sampel adalah 322 responden. Analisis yang digunakan dalam penelitian ini adalah Analisis Regresi Berganda menggunakan program SPSS . Hasil penelitian dari 322 responden menunjukkan nilai signifikansi dibawah 0.05 artinya variabel Kepemimpinan, Organisasi, Tim Peningkatan Mutu dan Self-Efficacy berpengaruh signifikan terhadap terhadap status penilaian Puskesmas yang terakreditasi Dasar-Madya dengan Puskesmas yang terakreditasi Utama – Paripurna tahun 2016-2019. Dan variable organisasi merupakan variable yang paling bermakna berdasarkan hasil Uji Statistik.
Analisis Pengaruh Berbagai Variabel Terhadap Permohonan Dispensasi Pernikahan
Authors: Nawi Syahruddin , Salle Salle
Published: March 2021

Penelitian ini memfokuskan perhatian pada analisis frekuensi pernikahan dini dan pengaruh berbagai variabel terhadap meningkatnya frekuensi permohonan dispensasi Pernikahan di Pegadilan Agama Kota Makassar. Tujuan yakni, untuk mengetahui dan menganalisi frekuensi permohonan dispensasi nikah dan pengaruh berbagai faktor (variable bebas) terhadap meningkatnya permohonan dispensasi pernikahan di Pengadilan Agama Kota Makassar. Tipe penelitian yang digunakan adalah perpaduan penelitian hukum normatif (doctrinal) dan penelitian hukum empiris (non doktrinal). Adapun sumber dan jenis data pada penelitian ini yakni, data primer yang merupakan data mentah yang diperoleh langsung dari responden, sedang data sekunder yakni data berupa dokumen yang sudah diolah dari instansi terkait. Teknik analisis yakni kualitatif dan kuantitatif terhadap hasil penelitian yang dipaparkan dalam bentuk tabel. Hasil penelitian yakni, bahwa frekuensi permohonan dispensasi pernikahan, terus mengalami peningkatan, sedang faktor yang mempengaruhi yakni, 1) kematangan fisik, 2) budaya, 3) pendidikan, 4) kehamilan diluar nikah, 5) lingkungan, 6) media sosial, 7) ekonomi, 8) kebiasaan, 9) kemudahan proses, 10) biaya rendah dan 11) kesadaran hukum.

This study focuses attention on the analysis of the frequency of early marriages and variable variations on the comparison of the frequency of marriage dispensations in the Religious Courts of Makassar. The purpose is to study and analyze the frequency of marriage dispensation requests and factor variations (independent variables) to requests for marriage assistance in the Makassar City Religious Court. The type of research used is a combination of normative (doctrinal) legal research and empirical (non-doctrinal) legal research. From the sources and types of data in this study, primary data is raw data obtained directly from respondents, while secondary data is data that consists of documents that have been processed from relevant agencies. Qualitative and quantitative analysis techniques of research results are presented in tabular form. The results of the study are, research, renewal, continuous improvement, improvement of factors, namely, 1) physical maturity, 2) culture, 3) education, 4) increase in pregnancy, 5) environment, 6) social media, 7) economy, 8) habits , 9) process convenience, 10) low cost and 11) legal awareness.
Efektivitas Penyidikan Terhadap Pelaku Balap Liar Di Wilayah Hukum Polrestabes Makassar
Authors: Zulkifli Zulkifli , Pawennei Muliaty , Mappaseleng Nur Fadhillah
Published: March 2021

Tujuan penelitian mengetahui dan menganalisis efektivitas penyidikan terhadap pelaku balap liar di wilayah Polrestabes Makassar faktor yang mempengaruhinya. Metode penelitian ini menggunakan tipe penelitian hukum normatif dan hukum empiris. Hasil penelitian ini menunjukkan bahwa penyidikan terhadap pelaku balap liar di wilayah hukum Polrestabes Makassar kurang efektif, karena masih tampak diberbagai tempat terjadi balap liar dan anak di bawah usia tujuh belas tahun menjadi pelau balap liar yang pada dasarnya telah melanggar Undang-Undang Nomor 22 Tahun 2009 tentang Lalu Lintas dan Angkutan Jalan. Faktor-faktor yang mempengaruhi efektivitas penyidikan terhadap pelaku balap liar di wilayah hukum Polrestabes Makassar adalah faktor substansi hukum faktor sumber daya manusia aparat, faktor sarana dan prasarana, faktor kesadaran hukum masyarakat, dan faktor budaya hukum masyarakat.

The research objective was to identify and analyze the effectiveness of investigations on illegal racing actors in the Makassar Police Station. This research method uses a type of normative legal research and empirical law. The results of this study indicate that the investigation of illegal racing actors in the jurisdiction of the Makassar Police is ineffective, because there are still several places where illegal racing occurs and children under the age of seventeen become illegal racing drivers who basically have violated Law Number 22 Year 2009. regarding Traffic and Road Transportation. The factors that influence the effectiveness of investigations against perpetrators of illegal racing in the jurisdiction of the Makassar Police are the legal substance factors, human resources, facilities and infrastructure, community legal awareness, and community legal culture factors.
Efektivitas Penegakan Hukum Tindak Pidana Kekerasan Terhadap Anak Di Kota Makassar
Authors: Hambali Azwad Rachmat
Published: March 2021

Tujuan penelitian menganalisis efektivitas penegakan hukum tindak pidana kekerasan terhadap anak di Kota Makassar dan faktor-faktor yang mempengaruhinya. Penelitian ini adalah penelitian hukum normatif dan hukum empiris. Sifat penelitian ini adalah deskriptif analitis. Populasi dalam penelitian ini Penyidik Kepolisian di Polres Makassar, Advokat, Aktivis Lembaga Perlindungan Anak Sulawesi Selatan, dan Korban/Keluarganya. Sampel peneltian adalah Penyidik Kepolisian 10 orang, Advokat 10 orang, Masyarakat 15 orang, dan Korban/Keluarganya 5 orang. Hasil penelitian ini menunjukkan bahwa kasus kekerasan terhadap anak yang dilaporkan ke Polresta Makassar setiap tahun mengalami penurunan akan tetapi penyelesaiannya juga mengalami kecenderungan penurunan. Oleh karena itu, penegakan hukum tindak pidana kekerasan terhadap anak di Kepolisian Resor Kota Makassar kurang efektif. Faktor-faktor yang mempengaruhi efektivitas penegakan hukum tindak pidana kekerasan terhadap anak di Kepolisian Resor Kota Makassar adalah faktor substansi hukum, faktor aparat penegak hukum, faktor sarana dan prasarana, serta faktor kesadaran hukum masyarakat.

The research objective is to analyze the effectiveness of law enforcement on violence against children in Makassar City and the factors that influence it. This research is a normative legal research and empirical law. The nature of this research is descriptive analytical. The population in this study were Police Investigators at the Makassar Police, Advocates, South Sulawesi Child Protection Institution activists, and victims / their families. The sample of the study was 10 Police Investigators, 10 Advocates, 15 People, and 5 Victims / Their Families. The results of this study indicate that cases of violence against children reported to the Makassar Police have decreased every year, but the resolution has also decreased. Therefore, the law enforcement of violence against children in the Makassar City Police is less effective. Factors that affect the effectiveness of law enforcement on crimes against children at the Makassar City Police are legal substance factors, law enforcement officers, facilities and infrastructure factors, and community legal awareness factors.
Hak Mantan Narapidana Menjadi Calon Kepala Daerah Terhadap Putusan Mahkamah Kontitusi Nomor: 56/PUU-XVII/2019
Authors: Mastura Mastura , Sampara Said , Qamar Nurul
Published: March 2021

Penelitian bertujuan untuk menganalisis dari putusan Mahkamah Konstitusi Nomor 56/PUU-XVII/2019 terhadap hak mantan narapidana menjadi calon kepala daerah. Penelitian ini adalah meggunakan tipe penelitian Hukum Normatif. Hasil penelitian ini menyimpulkan bahwa: 1) pertimbangan hukum majelis hakim dalam Putusan mahkamah Konstitusi Nomor: 56/PUU-XVII2019 untuk menjadi calon kepala daerah dengan syarat setelah mejalani masa tunggu selama 5 tahun sejak di bebaskan serta terbuka dan jujur mengemukakan kepada publik bahwa yang bersangkutan mantan narapidana. Atas dasar itu Mahkamah Konstitusi memberikan hak kepada mantan narapidana untuk mencalonkan diri menjadi kepala daerah. 2) hak mantan narapiana untuk mencalonkan diri dalam pemilihan kepala daerah dalam putusan MK telah mengembalikkan hak-hak mantan narapidana yakni hak untuk ikut berpartipasi dalam politik dan hak yang sama dihadapan hukum.

The research aims to analyze the decision of the Constitutional Court Number 56 / PUU-XVII / 2019 on the rights of ex-convicts to become candidates for regional head. This research is to use the Normative Law research type. The results of this study conclude that: 1) the legal considerations of the panel of judges in the Constitutional Court Decision Number: 56 / PUU-XVII2019 to become a candidate for regional head with the conditions after undergoing a waiting period of 5 years since being released and openly and honestly telling the public that the person concerned ex-convict. On that basis, the Constitutional Court gives the right to ex-convicts to run for regional head. 2) The right of former prisoners to run for regional head elections in the Constitutional Court decision has restored the rights of former prisoners, namely the right to participate in politics and equal rights before the law.
Efektivitas Fungsi Pengawasan DPRD Dalam Penyelenggaraan Pemerintahan Daerah: Studi Kota Makassar
Authors: Herman Herman , Thalib Hambali , Baharuddin Hamza
Published: March 2021

Paradigma baru dalam undang-undang nomor 23 tahun 23 tahun 2014 tetang pemerintahan daerah menghendaki hubungan yang sejajar antara DPRD dengan pemerintah daerah. Hubungan sejajar tersebut menandakan bahwa posisi DPRD dan pemerintah daerah adalah menempati posisi yang sama kuat. Hal itu di perlakukan guna mewujudkan pemerintahan yang baik (Good Government) yang di imbangi system pengawasan yang efektif dan efesien melalui mekanisme Check and Balance. Pemerintahan baik Good Government adalah pemerintahan yang di jalankan berdasarkan pada norma atau peraturan perundang-undangan yang mengaturnya secara konsisten dan bertanggung jawab dalam rangka mencapai tujuan negara yang di landasi prinsip transparan, angkutabel, bersih, jujur dan amanah. Untuk mewujudkan pemerintahan daerah yang baik, maka fungsi Dewan Perwakilan Rakyar Daerah di dalam melakukan pengawasan atas pelaksanaan urusan pemerintahan daerah adalah sangat penting. Pengawasan DPRD ini termasuk keputusan yang sanagt umum di luar peraturan perundang-undangan seperti kebijkan kepala daerah.

The new paradigm in law number 23 of 23 of 2014 regarding regional governance requires an equal relationship between the DPRD and local governments. This parallel relationship indicates that the position of DPRD and local government is in the same strong position. This is done in order to create a good government (Good Government) which is balanced by an effective and efficient monitoring system through the Check and Balance mechanism. Good governance Good Government is a government that is run based on the norms or laws and regulations that regulate it consistently and responsibly in order to achieve the country's goals which are based on the principles of transparency, transportation, cleanliness, honesty and trustworthiness. To realize good regional governance, the function of the Regional People's Representative Council in supervising the implementation of regional government affairs is very important. This DPRD oversight includes decisions that are very general outside the statutory regulations, such as the policies of the regional head.
Pengaruh Pendidikan, Pelatihan, Disiplin dan Kompensasi Terhadap Prestasi Kerja Karyawan Rumah Sakit Umum Salewangang Di Kabupaten Maros
Authors: Tangdiesak Kadir
Published: March 2021

The aims of this research are : (1) to analyse the influence of education variable to make-up of labour capacity of officer at home public pain ofsalewangang of regency Maros. (2) to analyse the influence of training variable to make-up of labour capacity at home common public pain ofsalewangang of regency Maros. (3) to analyse the influence of discipline variable to make-up of labour capacity at home commo public pain ofsalewangang of regency Maros. (4) to analyse the influence of compensation variable to make-up of labour capacity at home common public pain of salewangang of regency Maros. Research conducted with the observation method, kuesioner, interview and survey of through passing 66 responder selected by as sampel. Analyzer used by is descriptive analysis and statistical analysis by mengunakan is doubled regresi liner. Result of this research indicate that pursuant to result of processing of regresi liner of above showing fourth of variable that is education, training of discipline and compensation, having an effect on positive to labour capacity common public hospital officer of Salewangang of Regency Maros. And most dominant have an effect on to labour capacity of officer is discipline.Suggested that by a the variable above is ever paid attention to by simultan and kontinyu of so that be discipline mount which in the end, having an effect on by signifikan to make-up of labour capacity officer.