Latent Self-Exciting Point Process Model for Spatial-Temporal Networks

We propose a latent self-exciting point process model that describes geographically distributed interactions between pairs of entities. In contrast to most existing approaches that assume fully observable interactions, here we consider a scenario where certain interaction events lack information about participants. Instead, this information needs to be inferred from the available observations. We develop an efficient approximate algorithm based on variational expectation-maximization to infer unknown participants in an event given the location and the time of the event. We validate the model on synthetic as well as real-world data, and obtain very promising results on the identity-inference task. We also use our model to predict the timing and participants of future events, and demonstrate that it compares favorably with baseline approaches.Comment: 20 pages, 6 figures (v3); 11 pages, 6 figures (v2); previous version appeared in the 9th Bayesian Modeling Applications Workshop, UAI'1

Pengaruh Motivasi dan Kemampuan Survey terhadap Kinerja Karyawan Studi Kasus pada PT. Telkom Akses Unit Survey Drawing & Data Inventory Semarang

Every company want to have an optimal employee performance for accomplishing company\u27s goal. Performance of employees affected by several factors, such as motivation and capability. Therefore, PT Telkom Access committed to improve the performance of employees or company in order to achieve customer satisfaction. In fact, there are still many of the employees could not reach the survey target and high amount of absences. It can be indicated the low of motivation, survey capability, and employee\u27s performance.The aim of the study is showing the influence of motivation and survey capability to employees\u27 performance of PT Telkom Akses Unit Survey Drawing & Data Inventory Witel Semarang. The research type was using explanatory research, the research instrument is questionnaire. The population was not very big which 50 persons, so the method of the research was using saturated sample.The findings shows that motivation has influence to employees\u27 performance with 0,398 correlated coefficient and 15,9% determinate coefficient, survey capability has influence to employees\u27 performance with Y= 1,124+0,121 X1+0,576X2 equation. It meant that the higher motivation and survey capability of the employees, the higher performance. The conclusion of the research is both variables: motivation and survey capability have significant and positive influence to the employees\u27 performance. The findings suggested the firm to apply reward and punishment system, fix the work facility, review the payroll, and also increase the coordination of each related unit in order the survey can be done effectively

Hubungan Kepemimpinan Kepala Ruangan dengan Kinerja Perawat dalam Melaksanakan Asuhan Keperawatan di RS X Kabupaten Ciamis Tahun 2023

Kepala ruangan di RS x belum menunjukan peran yang optimal dalam upaya peningkatan kinerja perawat terutama dalam melakukan asuhan keperawatan. Penelitian ini bertujuan uintuik meingeitahuii hubungan kepemimpinan kepala ruangan dengan kinerja perawat dalam melaksanakan asuhan keperawatan di RS X Ciamis. cross-sectional merupakan pendekatan yang digunakan pada penelitian.. Populasi dalam penelitian ini adalah seluruh perawat yang ada di lingkungan RS X Kabupaten Ciamis dengan jumlah sebanyak 376 orang. Tenik pengambilan sample menggunakan puirpoisivei sampling sebanyak 79 orang. Hasil didapatkan data bahwa : 1) Kepemimpinan Kepala Ruangan di RS X Ciamis Tahun 2023 sudah baik (55,70%). 2) Kinerja perawat dalam melaksanakan asuhan keperawatan di RS X Ciamis dapat dikategorikan cukup (49,37%). 3) Terdapat Hubunganyang signifikan antara kepemimpinan Kepala Ruangan dengan kinerja perawat dalam melaksanakan asuhan keperawatan p value = 0,000. Pemimpin perawat yang mengelola sumber daya keperawatan adalah personel kunci yang bertanggung jawab untuk mengawasi kualitas perawatan dan keselamatan pasien, dan oleh karena itu mereka perlu mendorong perawat untuk lebih memahami kebutuhan paien dan meningkatkan kinerjanya

Faktor-Faktor yang Berhubungan dengan Kejadian Wound Dehiscence pada Pasien Post Laparatomi

Wound dehiscence sering terjadi setelah pembedahan mayor abdomen menimbulkan tingkat morbiditas dan mortalitas yang tinggi. Wound dehiscence dapat menimbulkan stress, eviserasi, reoperasi, gangguan citra tubuh, meningkatnya lama rawat dan biaya rawat, menurunkan kualitas hidup pasien serta kematian sehingga perlu menangani faktor yang mempengaruhi kejadian wound dehiscence. Tujuan dari penelitian ini adalah untuk menganalisis faktor-faktor yang berhubungan dengan kejadian wound dehiscence pada pasien dewasa post laparatomi di RSUP Dr Hasan Sadikin Bandung. Metode penelitian menggunakan analitik korelasi dengan pendekatan cross sectional. Sampel yang digunakan berjumlah 40 orang yang diambil dengan menggunakan consecutive sampling. Pengumpulan data dengan cara wawancara, observasi dan studi dokumentasi. Analisis univariat menggunakan distribusi frekuensi dan analisis bivariat menggunakan uji Chi Square. Hasil penelitian menunjukkan kejadian wound dehiscence terjadi ketika perawatan di rumah (35%). Hasil analisis bivariat menunjukkan adanya hubungan yang signifikan antara infeksi luka (p=0,0001), operasi emergensi (p = 0,020), hipoalbumin (p=0,037), anemia (p = 0,028), status nutrisi (0,010), dan adanya penyakit penyerta (p = 0,008) dengan kejadian wound dehiscence, serta tidak ada hubungan yang signifikan antara faktor usia (p = 0,581) dan jenis kelamin (p= 0,604) dengan kejadian wound dehiscence. Penting bagi perawat untuk mengidentifikasi potensial faktor risiko wound dehiscence pada pasien yang dilakukan operasi laparatomi dan segera melakukan intervensi yang diperlukan untuk mencegah terjadinya komplikasi wound dehiscence, diantaranya dengan melakukan discharge planning terkait perawatan luka dan pentingnya asupan protein yang adekuat supaya bisa dikenali ditahab mana terjadinya wound dehiscence.Kata kunci: Pasien, post laparatomi, wound dehiscence. Factors correlating of Wound Dehiscence in Patients after Laparatomi at Dr Hasan Sadikin General Hospital BandungAbsractWound dehiscence is often occurred after major abdominal surgery which impacts on morbidity and mortality rates and significantly contributes to prolonged hospital stays, implicit and explicit costs, associate with psychosocial stressor on patients, evisceration re-surgical operation, and may affect to quality of life patients. It is therefore necessary to identify factors affecting wound dehiscence. The aims of the study was to analyze factors correlating of post-operative wound dehiscence in adult patients at Dr Hasan Sadikin general hospital. Correlational analytic with cross sectional approach was used in this study. 40 patients were selected to be participated in this study by using consecutive sampling. Observations, interviews and study documents were conducted in data collection process. Univariate and Bivariate analysis with Chi Square were performed to analyze the data. Results of the study identified than wound dehiscence were occurred during patients at home (35%). Result of analysis bivariate showed that there was a significance correlation between wound infection (p=0, 0001), surgical emergency (p = 0,020), hypo albumin (p=0,037), anemia (p = 0,028), nutrition status (0,010), and other illness (p = 0,008) with wound dehiscence. Whereas, there was no correlation significantly between age factor (p = 0,581) and gender (p= 0,604) with wound dehiscence. It is important for nurses to identify potential risk factors of wound dehiscence in patients after post-operative laparotomy and prevent complication of wound dehiscence by doing discharge planning especially in term of wound care and the need of taking protein consumption adequately to avoid wound dehiscence

Aktivitas Antimikroba Minyak Esensial Jahe Merah (Zingiber Officinale Var. Rubrum) dan Lengkuas Merah (Alpinia Purpurata K. Schum) terhadap Bakteri Patogen dan Perusak Pangan

Penelitian ini bertujuan untuk mengetahui karakteristik, komposisi dan aktivitas antimikroba minyak esensial jahe merah dan lengkuas merah lokal Indonesia terhadap empat spesies bakteri patogen dan Perusak pangan, yaitu B.cereus ATCC 10876, E.coli ATCC 25922, S. typhimurium ATCC 14028, dan P. aeruginosa ATCC 27853. Analisis karakteristik fisika-kimia dilakukan sesuai standar ISO 7355:1985. Komposisi kimia dianalisis menggunakan alat GC-MS. Pengujian aktivitas antimikroba dilakukan dengan metode difusi cakram untuk menentukan zona hambat, sertabroth microdillution untuk menentukan nilai Minimum Inhibitory Concentration (MIC) dan Minimum Bactericidal Concentration (MBC). Karakteristik minyak esensial jahe merah yang dihasilkan yaitu kuning kecoklatan, berat jenis 0,883, indeks bias 1,480, putaran optik -8.45, larut jernih (1:1) dalam alkohol 90%, bilangan asam 2,06, dan bilangan ester 42,45. Minyak esensial lengkuas merah memiliki karakteristik warna kuning terang, berat jenis 0,895, indeks bias 1,496, putaran optik -9.15, larut jernih (1:1) dalam alkohol 90%, bilangan asam 1,95 dan bilangan ester 140,15. Komponen mayor minyak esensial jahe merah terdiri dari trimethyl-heptadien-ol, ar-curcumene, camphene, carbaldehyde, -sesquiphellandrene, dan nerol; sedangkan komponen mayor minyak esensial lengkuas merah terdiri dari 1.8-cineole, chavicol,9-desoxo9-xi-hydroxy-3,5,7,8,9,12-pentaacetat-ingol, -caryophyllenedan -selinene. Minyak esensial jahe merah dan lengkuas merah memiliki aktivitas antibakteri yang bersifat moderat terhadap bakteri patogen dan Perusak pangan, dengan kisaran zona hambat rata-rata 7,17-10,33 mm dan 7,25-11,17 mm. Minyak esensial jahe merah dapat menghambat pertumbuhan bakteri uji pada nilai MIC 2,65-3,97 mg/mL dan nilai MBC 3,10-5,29 mg/mL, sedangkan minyak esensial lengkuas merah dapat menghambat bakteri uji dengan nilai MIC 1,79-4,03 mg/mL dan nilai MBC 1,79-4,92 mg/mL. Berdasarkan nilai MIC dan MBC, sensitivitas bakteri uji terhadap minyak esensial jahe merah dan lengkuas merah menurun berturut-turut dari B. cereus > E. coli > S. typhimurium > P. aeruginosa. Sensitivitas bakteri Gram positif dan Gram negatif terhadap kedua minyak esensial ini menunjukkan potensi minyak esensial jahe merah dan lengkuas merah untuk digunakan sebagai pengawet alami di industri pangan

Gang-related crime in Los Angeles remained stable following COVID-19 social distancing orders

Research Summary The onset of extreme social distancing measures is expected to have a dramatic impact on crime. Here, we examine the impact of mandated, city‐wide social distancing orders aimed at limiting the spread of COVID‐19 on gang‐related crime in Los Angeles. We hypothesize that the unique subcultural processes surrounding gangs may supersede calls to shelter in place and allow gang‐related crime to persist. If the normal guardianship of people and property is also disrupted by social distancing, then we expect gang violence to increase. Using autoregressive time series models, we show that gang‐related crime remained stable and crime hot spots largely stationary following the onset of shelter in place. Policy Implications In responding to disruptions to social and economic life on the scale of the present pandemic, both police and civilian organizations need to anticipate continued demand, all while managing potential reductions to workforce. Police are faced with this challenge across a wide array of crime types. Civilian interventionists tasked with responding to gang‐related crime need to be prepared for continued peacekeeping and violence interruption activities, but also an expansion of responsibilities to deal with “frontline” or “street‐level” management of public health needs

Impact of social distancing during COVID-19 pandemic on crime in Los Angeles and Indianapolis

Governments have implemented social distancing measures to address the ongoing COVID-19 pandemic. The measures include instructions that individuals maintain social distance when in public, school closures, limitations on gatherings and business operations, and instructions to remain at home. Social distancing may have an impact on the volume and distribution of crime. Crimes such as residential burglary may decrease as a byproduct of increased guardianship over personal space and property. Crimes such as domestic violence may increase because of extended periods of contact between potential offenders and victims. Understanding the impact of social distancing on crime is critical for ensuring the safety of police and government capacity to deal with the evolving crisis. Understanding how social distancing policies impact crime may also provide insights into whether people are complying with public health measures. Examination of the most recently available data from both Los Angeles, CA, and Indianapolis, IN, shows that social distancing has had a statistically significant impact on a few specific crime types. However, the overall effect is notably less than might be expected given the scale of the disruption to social and economic life

AKTIVITAS HEMOSTATIK EKSTRAK ETANOL DAUN ANDONG (Cordyline fruticosa [L.] A.Cheval) TERHADAP MENCIT JANTAN GALUR SWISS-WEBSTER

Pengujian aktivitas hemostatik dari ekstrak etanol daun andong (Cordyline fruticosa [L.] A.Cheval) dilakukan untuk menggali potensi daun andong dalam penggunaannya sebagai hemostatik yang berasal dari bahan alam. Pengujian aktivitas hemostatik ini menggunakan tiga dosis uji ekstrak etanol daun andong yaitu 0,0027456 g/20 g BB mencit (dosis I), 0,0054912 g/20 g BB mencit (dosis II), 0,0109 g/20 g BB mencit (dosis III). Selain ketiga dosis uji digunakan pula tiga pembanding yaitu kontrol normal, kontrol negatif, dan kontrol positif. Hasil yang didapat bahwa ekstrak etanol daun andong yaitu 0,0027456 g/20 g BB mencit (dosis I), 0,0054912 g/20 g BB mencit (dosis II), 0,0109 g/20 g BB mencit (dosis III). Mempunyai aktivitas hemostatik dengan menurunkan waktu pendarahan, memperlama waktu koagulasi, serta mempercepat waktu protombin

Human group formation in online guilds and offline gangs driven by common team dynamic

Quantifying human group dynamics represents a unique challenge. Unlike animals and other biological systems, humans form groups in both real (offline) and virtual (online) spaces -- from potentially dangerous street gangs populated mostly by disaffected male youths, through to the massive global guilds in online role-playing games for which membership currently exceeds tens of millions of people from all possible backgrounds, age-groups and genders. We have compiled and analyzed data for these two seemingly unrelated offline and online human activities, and have uncovered an unexpected quantitative link between them. Although their overall dynamics differ visibly, we find that a common team-based model can accurately reproduce the quantitative features of each simply by adjusting the average tolerance level and attribute range for each population. By contrast, we find no evidence to support a version of the model based on like-seeking-like (i.e. kinship or `homophily')